drivers/scsi/lpfc/lpfc_init.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2025 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/idr.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/module.h>
  30 #include <linux/kthread.h>
  31 #include <linux/pci.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/sched/clock.h>
  34 #include <linux/ctype.h>
  35 #include <linux/slab.h>
  36 #include <linux/firmware.h>
  37 #include <linux/miscdevice.h>
  38 #include <linux/percpu.h>
  39 #include <linux/irq.h>
  40 #include <linux/bitops.h>
  41 #include <linux/crash_dump.h>
  42 #include <linux/cpu.h>
  43 #include <linux/cpuhotplug.h>
  44
  45 #include <scsi/scsi.h>
  46 #include <scsi/scsi_device.h>
  47 #include <scsi/scsi_host.h>
  48 #include <scsi/scsi_transport_fc.h>
  49 #include <scsi/scsi_tcq.h>
  50 #include <scsi/fc/fc_fs.h>
  51
  52 #include "lpfc_hw4.h"
  53 #include "lpfc_hw.h"
  54 #include "lpfc_sli.h"
  55 #include "lpfc_sli4.h"
  56 #include "lpfc_nl.h"
  57 #include "lpfc_disc.h"
  58 #include "lpfc.h"
  59 #include "lpfc_scsi.h"
  60 #include "lpfc_nvme.h"
  61 #include "lpfc_logmsg.h"
  62 #include "lpfc_crtn.h"
  63 #include "lpfc_vport.h"
  64 #include "lpfc_version.h"
  65 #include "lpfc_ids.h"
  66
  67 static enum cpuhp_state lpfc_cpuhp_state;
  68 /* Used when mapping IRQ vectors in a driver centric manner */
  69 static uint32_t lpfc_present_cpu;
  70 static bool lpfc_pldv_detect;
  71
  72 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);
  73 static void lpfc_cpuhp_remove(struct lpfc_hba *phba);
  74 static void lpfc_cpuhp_add(struct lpfc_hba *phba);
  75 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  76 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  77 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
  78 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  79 static int lpfc_setup_endian_order(struct lpfc_hba *);
  80 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  81 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
  82 static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);
  83 static void lpfc_init_sgl_list(struct lpfc_hba *);
  84 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  85 static void lpfc_free_active_sgl(struct lpfc_hba *);
  86 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  87 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  88 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  89 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  90 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  91 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
  92 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
  93 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
  94 static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);
  95 static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);
  96 static int lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *);
  97 static void lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba);
  98 static void lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba);
  99
 100 static struct scsi_transport_template *lpfc_transport_template = NULL;
 101 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
 102 static DEFINE_IDR(lpfc_hba_index);
 103 #define LPFC_NVMET_BUF_POST 254
 104 static int lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport);
 105 static void lpfc_cgn_update_tstamp(struct lpfc_hba *phba, struct lpfc_cgn_ts *ts);
 106
 107 /**
 108  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
 109  * @phba: pointer to lpfc hba data structure.
 110  *
 111  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
 112  * mailbox command. It retrieves the revision information from the HBA and
 113  * collects the Vital Product Data (VPD) about the HBA for preparing the
 114  * configuration of the HBA.
 115  *
 116  * Return codes:
 117  *   0 - success.
 118  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
 119  *   Any other value - indicates an error.
 120  **/
 121 int
 122 lpfc_config_port_prep(struct lpfc_hba *phba)
 123 {
 124         lpfc_vpd_t *vp = &phba->vpd;
 125         int i = 0, rc;
 126         LPFC_MBOXQ_t *pmb;
 127         MAILBOX_t *mb;
 128         char *lpfc_vpd_data = NULL;
 129         uint16_t offset = 0;
 130         static char licensed[56] =
 131                     "key unlock for use with gnu public licensed code only\0";
 132         static int init_key = 1;
 133
 134         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 135         if (!pmb) {
 136                 phba->link_state = LPFC_HBA_ERROR;
 137                 return -ENOMEM;
 138         }
 139
 140         mb = &pmb->u.mb;
 141         phba->link_state = LPFC_INIT_MBX_CMDS;
 142
 143         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 144                 if (init_key) {
 145                         uint32_t *ptext = (uint32_t *) licensed;
 146
 147                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 148                                 *ptext = cpu_to_be32(*ptext);
 149                         init_key = 0;
 150                 }
 151
 152                 lpfc_read_nv(phba, pmb);
 153                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 154                         sizeof (mb->un.varRDnvp.rsvd3));
 155                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 156                          sizeof (licensed));
 157
 158                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 159
 160                 if (rc != MBX_SUCCESS) {
 161                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 162                                         "0324 Config Port initialization "
 163                                         "error, mbxCmd x%x READ_NVPARM, "
 164                                         "mbxStatus x%x\n",
 165                                         mb->mbxCommand, mb->mbxStatus);
 166                         mempool_free(pmb, phba->mbox_mem_pool);
 167                         return -ERESTART;
 168                 }
 169                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 170                        sizeof(phba->wwnn));
 171                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 172                        sizeof(phba->wwpn));
 173         }
 174
 175         /*
 176          * Clear all option bits except LPFC_SLI3_BG_ENABLED,
 177          * which was already set in lpfc_get_cfgparam()
 178          */
 179         phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
 180
 181         /* Setup and issue mailbox READ REV command */
 182         lpfc_read_rev(phba, pmb);
 183         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 184         if (rc != MBX_SUCCESS) {
 185                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 186                                 "0439 Adapter failed to init, mbxCmd x%x "
 187                                 "READ_REV, mbxStatus x%x\n",
 188                                 mb->mbxCommand, mb->mbxStatus);
 189                 mempool_free( pmb, phba->mbox_mem_pool);
 190                 return -ERESTART;
 191         }
 192
 193
 194         /*
 195          * The value of rr must be 1 since the driver set the cv field to 1.
 196          * This setting requires the FW to set all revision fields.
 197          */
 198         if (mb->un.varRdRev.rr == 0) {
 199                 vp->rev.rBit = 0;
 200                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 201                                 "0440 Adapter failed to init, READ_REV has "
 202                                 "missing revision information.\n");
 203                 mempool_free(pmb, phba->mbox_mem_pool);
 204                 return -ERESTART;
 205         }
 206
 207         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 208                 mempool_free(pmb, phba->mbox_mem_pool);
 209                 return -EINVAL;
 210         }
 211
 212         /* Save information as VPD data */
 213         vp->rev.rBit = 1;
 214         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 215         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 216         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 217         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 218         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 219         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 220         vp->rev.smRev = mb->un.varRdRev.smRev;
 221         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 222         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 223         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 224         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 225         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 226         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 227         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 228         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 229
 230         /* If the sli feature level is less then 9, we must
 231          * tear down all RPIs and VPIs on link down if NPIV
 232          * is enabled.
 233          */
 234         if (vp->rev.feaLevelHigh < 9)
 235                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 236
 237         if (lpfc_is_LC_HBA(phba->pcidev->device))
 238                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 239                                                 sizeof (phba->RandomData));
 240
 241         /* Get adapter VPD information */
 242         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 243         if (!lpfc_vpd_data)
 244                 goto out_free_mbox;
 245         do {
 246                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 247                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 248
 249                 if (rc != MBX_SUCCESS) {
 250                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 251                                         "0441 VPD not present on adapter, "
 252                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 253                                         mb->mbxCommand, mb->mbxStatus);
 254                         mb->un.varDmp.word_cnt = 0;
 255                 }
 256                 /* dump mem may return a zero when finished or we got a
 257                  * mailbox error, either way we are done.
 258                  */
 259                 if (mb->un.varDmp.word_cnt == 0)
 260                         break;
 261
 262                 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
 263                         mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
 264                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 265                                       lpfc_vpd_data + offset,
 266                                       mb->un.varDmp.word_cnt);
 267                 offset += mb->un.varDmp.word_cnt;
 268         } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
 269
 270         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 271
 272         kfree(lpfc_vpd_data);
 273 out_free_mbox:
 274         mempool_free(pmb, phba->mbox_mem_pool);
 275         return 0;
 276 }
 277
 278 /**
 279  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 280  * @phba: pointer to lpfc hba data structure.
 281  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 282  *
 283  * This is the completion handler for driver's configuring asynchronous event
 284  * mailbox command to the device. If the mailbox command returns successfully,
 285  * it will set internal async event support flag to 1; otherwise, it will
 286  * set internal async event support flag to 0.
 287  **/
 288 static void
 289 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 290 {
 291         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 292                 phba->temp_sensor_support = 1;
 293         else
 294                 phba->temp_sensor_support = 0;
 295         mempool_free(pmboxq, phba->mbox_mem_pool);
 296         return;
 297 }
 298
 299 /**
 300  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 301  * @phba: pointer to lpfc hba data structure.
 302  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 303  *
 304  * This is the completion handler for dump mailbox command for getting
 305  * wake up parameters. When this command complete, the response contain
 306  * Option rom version of the HBA. This function translate the version number
 307  * into a human readable string and store it in OptionROMVersion.
 308  **/
 309 static void
 310 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 311 {
 312         struct prog_id *prg;
 313         uint32_t prog_id_word;
 314         char dist = ' ';
 315         /* character array used for decoding dist type. */
 316         char dist_char[] = "nabx";
 317
 318         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 319                 mempool_free(pmboxq, phba->mbox_mem_pool);
 320                 return;
 321         }
 322
 323         prg = (struct prog_id *) &prog_id_word;
 324
 325         /* word 7 contain option rom version */
 326         prog_id_word = pmboxq->u.mb.un.varWords[7];
 327
 328         /* Decode the Option rom version word to a readable string */
 329         dist = dist_char[prg->dist];
 330
 331         if ((prg->dist == 3) && (prg->num == 0))
 332                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
 333                         prg->ver, prg->rev, prg->lev);
 334         else
 335                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
 336                         prg->ver, prg->rev, prg->lev,
 337                         dist, prg->num);
 338         mempool_free(pmboxq, phba->mbox_mem_pool);
 339         return;
 340 }
 341
 342 /**
 343  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
 344  * @vport: pointer to lpfc vport data structure.
 345  *
 346  *
 347  * Return codes
 348  *   None.
 349  **/
 350 void
 351 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 352 {
 353         struct lpfc_hba *phba = vport->phba;
 354
 355         /*
 356          * If the name is empty or there exists a soft name
 357          * then copy the service params name, otherwise use the fc name
 358          */
 359         if (vport->fc_nodename.u.wwn[0] == 0)
 360                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 361                         sizeof(struct lpfc_name));
 362         else
 363                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
 364                         sizeof(struct lpfc_name));
 365
 366         /*
 367          * If the port name has changed, then set the Param changes flag
 368          * to unreg the login
 369          */
 370         if (vport->fc_portname.u.wwn[0] != 0 &&
 371                 memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
 372                        sizeof(struct lpfc_name))) {
 373                 vport->vport_flag |= FAWWPN_PARAM_CHG;
 374
 375                 if (phba->sli_rev == LPFC_SLI_REV4 &&
 376                     vport->port_type == LPFC_PHYSICAL_PORT &&
 377                     phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_FABRIC) {
 378                         if (!(phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG))
 379                                 phba->sli4_hba.fawwpn_flag &=
 380                                                 ~LPFC_FAWWPN_FABRIC;
 381                         lpfc_printf_log(phba, KERN_INFO,
 382                                         LOG_SLI | LOG_DISCOVERY | LOG_ELS,
 383                                         "2701 FA-PWWN change WWPN from %llx to "
 384                                         "%llx: vflag x%x fawwpn_flag x%x\n",
 385                                         wwn_to_u64(vport->fc_portname.u.wwn),
 386                                         wwn_to_u64
 387                                            (vport->fc_sparam.portName.u.wwn),
 388                                         vport->vport_flag,
 389                                         phba->sli4_hba.fawwpn_flag);
 390                         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 391                                sizeof(struct lpfc_name));
 392                 }
 393         }
 394
 395         if (vport->fc_portname.u.wwn[0] == 0)
 396                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 397                        sizeof(struct lpfc_name));
 398         else
 399                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
 400                        sizeof(struct lpfc_name));
 401 }
 402
 403 /**
 404  * lpfc_config_port_post - Perform lpfc initialization after config port
 405  * @phba: pointer to lpfc hba data structure.
 406  *
 407  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 408  * command call. It performs all internal resource and state setups on the
 409  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 410  * ELS ring timers, etc.
 411  *
 412  * Return codes
 413  *   0 - success.
 414  *   Any other value - error.
 415  **/
 416 int
 417 lpfc_config_port_post(struct lpfc_hba *phba)
 418 {
 419         struct lpfc_vport *vport = phba->pport;
 420         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 421         LPFC_MBOXQ_t *pmb;
 422         MAILBOX_t *mb;
 423         struct lpfc_dmabuf *mp;
 424         struct lpfc_sli *psli = &phba->sli;
 425         uint32_t status, timeout;
 426         int i, j;
 427         int rc;
 428
 429         spin_lock_irq(&phba->hbalock);
 430         /*
 431          * If the Config port completed correctly the HBA is not
 432          * over heated any more.
 433          */
 434         if (phba->over_temp_state == HBA_OVER_TEMP)
 435                 phba->over_temp_state = HBA_NORMAL_TEMP;
 436         spin_unlock_irq(&phba->hbalock);
 437
 438         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 439         if (!pmb) {
 440                 phba->link_state = LPFC_HBA_ERROR;
 441                 return -ENOMEM;
 442         }
 443         mb = &pmb->u.mb;
 444
 445         /* Get login parameters for NID.  */
 446         rc = lpfc_read_sparam(phba, pmb, 0);
 447         if (rc) {
 448                 mempool_free(pmb, phba->mbox_mem_pool);
 449                 return -ENOMEM;
 450         }
 451
 452         pmb->vport = vport;
 453         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 454                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 455                                 "0448 Adapter failed init, mbxCmd x%x "
 456                                 "READ_SPARM mbxStatus x%x\n",
 457                                 mb->mbxCommand, mb->mbxStatus);
 458                 phba->link_state = LPFC_HBA_ERROR;
 459                 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 460                 return -EIO;
 461         }
 462
 463         mp = pmb->ctx_buf;
 464
 465         /* This dmabuf was allocated by lpfc_read_sparam. The dmabuf is no
 466          * longer needed.  Prevent unintended ctx_buf access as the mbox is
 467          * reused.
 468          */
 469         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 470         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 471         kfree(mp);
 472         pmb->ctx_buf = NULL;
 473         lpfc_update_vport_wwn(vport);
 474
 475         /* Update the fc_host data structures with new wwn. */
 476         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 477         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 478         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 479
 480         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 481         /* This should be consolidated into parse_vpd ? - mr */
 482         if (phba->SerialNumber[0] == 0) {
 483                 uint8_t *outptr;
 484
 485                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 486                 for (i = 0; i < 12; i++) {
 487                         status = *outptr++;
 488                         j = ((status & 0xf0) >> 4);
 489                         if (j <= 9)
 490                                 phba->SerialNumber[i] =
 491                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 492                         else
 493                                 phba->SerialNumber[i] =
 494                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 495                         i++;
 496                         j = (status & 0xf);
 497                         if (j <= 9)
 498                                 phba->SerialNumber[i] =
 499                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 500                         else
 501                                 phba->SerialNumber[i] =
 502                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 503                 }
 504         }
 505
 506         lpfc_read_config(phba, pmb);
 507         pmb->vport = vport;
 508         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 509                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 510                                 "0453 Adapter failed to init, mbxCmd x%x "
 511                                 "READ_CONFIG, mbxStatus x%x\n",
 512                                 mb->mbxCommand, mb->mbxStatus);
 513                 phba->link_state = LPFC_HBA_ERROR;
 514                 mempool_free( pmb, phba->mbox_mem_pool);
 515                 return -EIO;
 516         }
 517
 518         /* Check if the port is disabled */
 519         lpfc_sli_read_link_ste(phba);
 520
 521         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 522         if (phba->cfg_hba_queue_depth > mb->un.varRdConfig.max_xri) {
 523                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
 524                                 "3359 HBA queue depth changed from %d to %d\n",
 525                                 phba->cfg_hba_queue_depth,
 526                                 mb->un.varRdConfig.max_xri);
 527                 phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;
 528         }
 529
 530         phba->lmt = mb->un.varRdConfig.lmt;
 531
 532         /* Get the default values for Model Name and Description */
 533         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 534
 535         phba->link_state = LPFC_LINK_DOWN;
 536
 537         /* Only process IOCBs on ELS ring till hba_state is READY */
 538         if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
 539                 psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;
 540         if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
 541                 psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
 542
 543         /* Post receive buffers for desired rings */
 544         if (phba->sli_rev != 3)
 545                 lpfc_post_rcv_buf(phba);
 546
 547         /*
 548          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 549          */
 550         if (phba->intr_type == MSIX) {
 551                 rc = lpfc_config_msi(phba, pmb);
 552                 if (rc) {
 553                         mempool_free(pmb, phba->mbox_mem_pool);
 554                         return -EIO;
 555                 }
 556                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 557                 if (rc != MBX_SUCCESS) {
 558                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 559                                         "0352 Config MSI mailbox command "
 560                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 561                                         pmb->u.mb.mbxCommand,
 562                                         pmb->u.mb.mbxStatus);
 563                         mempool_free(pmb, phba->mbox_mem_pool);
 564                         return -EIO;
 565                 }
 566         }
 567
 568         spin_lock_irq(&phba->hbalock);
 569         /* Initialize ERATT handling flag */
 570         clear_bit(HBA_ERATT_HANDLED, &phba->hba_flag);
 571
 572         /* Enable appropriate host interrupts */
 573         if (lpfc_readl(phba->HCregaddr, &status)) {
 574                 spin_unlock_irq(&phba->hbalock);
 575                 return -EIO;
 576         }
 577         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 578         if (psli->num_rings > 0)
 579                 status |= HC_R0INT_ENA;
 580         if (psli->num_rings > 1)
 581                 status |= HC_R1INT_ENA;
 582         if (psli->num_rings > 2)
 583                 status |= HC_R2INT_ENA;
 584         if (psli->num_rings > 3)
 585                 status |= HC_R3INT_ENA;
 586
 587         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 588             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 589                 status &= ~(HC_R0INT_ENA);
 590
 591         writel(status, phba->HCregaddr);
 592         readl(phba->HCregaddr); /* flush */
 593         spin_unlock_irq(&phba->hbalock);
 594
 595         /* Set up ring-0 (ELS) timer */
 596         timeout = phba->fc_ratov * 2;
 597         mod_timer(&vport->els_tmofunc,
 598                   jiffies + secs_to_jiffies(timeout));
 599         /* Set up heart beat (HB) timer */
 600         mod_timer(&phba->hb_tmofunc,
 601                   jiffies + secs_to_jiffies(LPFC_HB_MBOX_INTERVAL));
 602         clear_bit(HBA_HBEAT_INP, &phba->hba_flag);
 603         clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);
 604         phba->last_completion_time = jiffies;
 605         /* Set up error attention (ERATT) polling timer */
 606         mod_timer(&phba->eratt_poll,
 607                   jiffies + secs_to_jiffies(phba->eratt_poll_interval));
 608
 609         if (test_bit(LINK_DISABLED, &phba->hba_flag)) {
 610                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 611                                 "2598 Adapter Link is disabled.\n");
 612                 lpfc_down_link(phba, pmb);
 613                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 614                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 615                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 616                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 617                                         "2599 Adapter failed to issue DOWN_LINK"
 618                                         " mbox command rc 0x%x\n", rc);
 619
 620                         mempool_free(pmb, phba->mbox_mem_pool);
 621                         return -EIO;
 622                 }
 623         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 624                 mempool_free(pmb, phba->mbox_mem_pool);
 625                 rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
 626                 if (rc)
 627                         return rc;
 628         }
 629         /* MBOX buffer will be freed in mbox compl */
 630         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 631         if (!pmb) {
 632                 phba->link_state = LPFC_HBA_ERROR;
 633                 return -ENOMEM;
 634         }
 635
 636         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 637         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 638         pmb->vport = phba->pport;
 639         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 640
 641         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 642                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 643                                 "0456 Adapter failed to issue "
 644                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 645                                 rc);
 646                 mempool_free(pmb, phba->mbox_mem_pool);
 647         }
 648
 649         /* Get Option rom version */
 650         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 651         if (!pmb) {
 652                 phba->link_state = LPFC_HBA_ERROR;
 653                 return -ENOMEM;
 654         }
 655
 656         lpfc_dump_wakeup_param(phba, pmb);
 657         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 658         pmb->vport = phba->pport;
 659         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 660
 661         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 662                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 663                                 "0435 Adapter failed "
 664                                 "to get Option ROM version status x%x\n", rc);
 665                 mempool_free(pmb, phba->mbox_mem_pool);
 666         }
 667
 668         return 0;
 669 }
 670
 671 /**
 672  * lpfc_sli4_refresh_params - update driver copy of params.
 673  * @phba: Pointer to HBA context object.
 674  *
 675  * This is called to refresh driver copy of dynamic fields from the
 676  * common_get_sli4_parameters descriptor.
 677  **/
 678 int
 679 lpfc_sli4_refresh_params(struct lpfc_hba *phba)
 680 {
 681         LPFC_MBOXQ_t *mboxq;
 682         struct lpfc_mqe *mqe;
 683         struct lpfc_sli4_parameters *mbx_sli4_parameters;
 684         int length, rc;
 685
 686         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 687         if (!mboxq)
 688                 return -ENOMEM;
 689
 690         mqe = &mboxq->u.mqe;
 691         /* Read the port's SLI4 Config Parameters */
 692         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
 693                   sizeof(struct lpfc_sli4_cfg_mhdr));
 694         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
 695                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
 696                          length, LPFC_SLI4_MBX_EMBED);
 697
 698         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
 699         if (unlikely(rc)) {
 700                 mempool_free(mboxq, phba->mbox_mem_pool);
 701                 return rc;
 702         }
 703         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
 704         phba->sli4_hba.pc_sli4_params.mi_cap =
 705                 bf_get(cfg_mi_ver, mbx_sli4_parameters);
 706
 707         /* Are we forcing MI off via module parameter? */
 708         if (phba->cfg_enable_mi)
 709                 phba->sli4_hba.pc_sli4_params.mi_ver =
 710                         bf_get(cfg_mi_ver, mbx_sli4_parameters);
 711         else
 712                 phba->sli4_hba.pc_sli4_params.mi_ver = 0;
 713
 714         phba->sli4_hba.pc_sli4_params.cmf =
 715                         bf_get(cfg_cmf, mbx_sli4_parameters);
 716         phba->sli4_hba.pc_sli4_params.pls =
 717                         bf_get(cfg_pvl, mbx_sli4_parameters);
 718
 719         mempool_free(mboxq, phba->mbox_mem_pool);
 720         return rc;
 721 }
 722
 723 /**
 724  * lpfc_hba_init_link - Initialize the FC link
 725  * @phba: pointer to lpfc hba data structure.
 726  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 727  *
 728  * This routine will issue the INIT_LINK mailbox command call.
 729  * It is available to other drivers through the lpfc_hba data
 730  * structure for use as a delayed link up mechanism with the
 731  * module parameter lpfc_suppress_link_up.
 732  *
 733  * Return code
 734  *              0 - success
 735  *              Any other value - error
 736  **/
 737 static int
 738 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 739 {
 740         return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
 741 }
 742
 743 /**
 744  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
 745  * @phba: pointer to lpfc hba data structure.
 746  * @fc_topology: desired fc topology.
 747  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 748  *
 749  * This routine will issue the INIT_LINK mailbox command call.
 750  * It is available to other drivers through the lpfc_hba data
 751  * structure for use as a delayed link up mechanism with the
 752  * module parameter lpfc_suppress_link_up.
 753  *
 754  * Return code
 755  *              0 - success
 756  *              Any other value - error
 757  **/
 758 int
 759 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
 760                                uint32_t flag)
 761 {
 762         struct lpfc_vport *vport = phba->pport;
 763         LPFC_MBOXQ_t *pmb;
 764         MAILBOX_t *mb;
 765         int rc;
 766
 767         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 768         if (!pmb) {
 769                 phba->link_state = LPFC_HBA_ERROR;
 770                 return -ENOMEM;
 771         }
 772         mb = &pmb->u.mb;
 773         pmb->vport = vport;
 774
 775         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
 776             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
 777              !(phba->lmt & LMT_1Gb)) ||
 778             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
 779              !(phba->lmt & LMT_2Gb)) ||
 780             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
 781              !(phba->lmt & LMT_4Gb)) ||
 782             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
 783              !(phba->lmt & LMT_8Gb)) ||
 784             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
 785              !(phba->lmt & LMT_10Gb)) ||
 786             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
 787              !(phba->lmt & LMT_16Gb)) ||
 788             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
 789              !(phba->lmt & LMT_32Gb)) ||
 790             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&
 791              !(phba->lmt & LMT_64Gb))) {
 792                 /* Reset link speed to auto */
 793                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 794                                 "1302 Invalid speed for this board:%d "
 795                                 "Reset link speed to auto.\n",
 796                                 phba->cfg_link_speed);
 797                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
 798         }
 799         lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
 800         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 801         if (phba->sli_rev < LPFC_SLI_REV4)
 802                 lpfc_set_loopback_flag(phba);
 803         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 804         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 805                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 806                                 "0498 Adapter failed to init, mbxCmd x%x "
 807                                 "INIT_LINK, mbxStatus x%x\n",
 808                                 mb->mbxCommand, mb->mbxStatus);
 809                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 810                         /* Clear all interrupt enable conditions */
 811                         writel(0, phba->HCregaddr);
 812                         readl(phba->HCregaddr); /* flush */
 813                         /* Clear all pending interrupts */
 814                         writel(0xffffffff, phba->HAregaddr);
 815                         readl(phba->HAregaddr); /* flush */
 816                 }
 817                 phba->link_state = LPFC_HBA_ERROR;
 818                 if (rc != MBX_BUSY || flag == MBX_POLL)
 819                         mempool_free(pmb, phba->mbox_mem_pool);
 820                 return -EIO;
 821         }
 822         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 823         if (flag == MBX_POLL)
 824                 mempool_free(pmb, phba->mbox_mem_pool);
 825
 826         return 0;
 827 }
 828
 829 /**
 830  * lpfc_hba_down_link - this routine downs the FC link
 831  * @phba: pointer to lpfc hba data structure.
 832  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 833  *
 834  * This routine will issue the DOWN_LINK mailbox command call.
 835  * It is available to other drivers through the lpfc_hba data
 836  * structure for use to stop the link.
 837  *
 838  * Return code
 839  *              0 - success
 840  *              Any other value - error
 841  **/
 842 static int
 843 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 844 {
 845         LPFC_MBOXQ_t *pmb;
 846         int rc;
 847
 848         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 849         if (!pmb) {
 850                 phba->link_state = LPFC_HBA_ERROR;
 851                 return -ENOMEM;
 852         }
 853
 854         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 855                         "0491 Adapter Link is disabled.\n");
 856         lpfc_down_link(phba, pmb);
 857         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 858         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 859         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 860                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 861                                 "2522 Adapter failed to issue DOWN_LINK"
 862                                 " mbox command rc 0x%x\n", rc);
 863
 864                 mempool_free(pmb, phba->mbox_mem_pool);
 865                 return -EIO;
 866         }
 867         if (flag == MBX_POLL)
 868                 mempool_free(pmb, phba->mbox_mem_pool);
 869
 870         return 0;
 871 }
 872
 873 /**
 874  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 875  * @phba: pointer to lpfc HBA data structure.
 876  *
 877  * This routine will do LPFC uninitialization before the HBA is reset when
 878  * bringing down the SLI Layer.
 879  *
 880  * Return codes
 881  *   0 - success.
 882  *   Any other value - error.
 883  **/
 884 int
 885 lpfc_hba_down_prep(struct lpfc_hba *phba)
 886 {
 887         struct lpfc_vport **vports;
 888         int i;
 889
 890         if (phba->sli_rev <= LPFC_SLI_REV3) {
 891                 /* Disable interrupts */
 892                 writel(0, phba->HCregaddr);
 893                 readl(phba->HCregaddr); /* flush */
 894         }
 895
 896         if (test_bit(FC_UNLOADING, &phba->pport->load_flag))
 897                 lpfc_cleanup_discovery_resources(phba->pport);
 898         else {
 899                 vports = lpfc_create_vport_work_array(phba);
 900                 if (vports != NULL)
 901                         for (i = 0; i <= phba->max_vports &&
 902                                 vports[i] != NULL; i++)
 903                                 lpfc_cleanup_discovery_resources(vports[i]);
 904                 lpfc_destroy_vport_work_array(phba, vports);
 905         }
 906         return 0;
 907 }
 908
 909 /**
 910  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
 911  * rspiocb which got deferred
 912  *
 913  * @phba: pointer to lpfc HBA data structure.
 914  *
 915  * This routine will cleanup completed slow path events after HBA is reset
 916  * when bringing down the SLI Layer.
 917  *
 918  *
 919  * Return codes
 920  *   void.
 921  **/
 922 static void
 923 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
 924 {
 925         struct lpfc_iocbq *rspiocbq;
 926         struct hbq_dmabuf *dmabuf;
 927         struct lpfc_cq_event *cq_event;
 928
 929         clear_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag);
 930
 931         while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
 932                 /* Get the response iocb from the head of work queue */
 933                 spin_lock_irq(&phba->hbalock);
 934                 list_remove_head(&phba->sli4_hba.sp_queue_event,
 935                                  cq_event, struct lpfc_cq_event, list);
 936                 spin_unlock_irq(&phba->hbalock);
 937
 938                 switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
 939                 case CQE_CODE_COMPL_WQE:
 940                         rspiocbq = container_of(cq_event, struct lpfc_iocbq,
 941                                                  cq_event);
 942                         lpfc_sli_release_iocbq(phba, rspiocbq);
 943                         break;
 944                 case CQE_CODE_RECEIVE:
 945                 case CQE_CODE_RECEIVE_V1:
 946                         dmabuf = container_of(cq_event, struct hbq_dmabuf,
 947                                               cq_event);
 948                         lpfc_in_buf_free(phba, &dmabuf->dbuf);
 949                 }
 950         }
 951 }
 952
 953 /**
 954  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
 955  * @phba: pointer to lpfc HBA data structure.
 956  *
 957  * This routine will cleanup posted ELS buffers after the HBA is reset
 958  * when bringing down the SLI Layer.
 959  *
 960  *
 961  * Return codes
 962  *   void.
 963  **/
 964 static void
 965 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
 966 {
 967         struct lpfc_sli *psli = &phba->sli;
 968         struct lpfc_sli_ring *pring;
 969         struct lpfc_dmabuf *mp, *next_mp;
 970         LIST_HEAD(buflist);
 971         int count;
 972
 973         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 974                 lpfc_sli_hbqbuf_free_all(phba);
 975         else {
 976                 /* Cleanup preposted buffers on the ELS ring */
 977                 pring = &psli->sli3_ring[LPFC_ELS_RING];
 978                 spin_lock_irq(&phba->hbalock);
 979                 list_splice_init(&pring->postbufq, &buflist);
 980                 spin_unlock_irq(&phba->hbalock);
 981
 982                 count = 0;
 983                 list_for_each_entry_safe(mp, next_mp, &buflist, list) {
 984                         list_del(&mp->list);
 985                         count++;
 986                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 987                         kfree(mp);
 988                 }
 989
 990                 spin_lock_irq(&phba->hbalock);
 991                 pring->postbufq_cnt -= count;
 992                 spin_unlock_irq(&phba->hbalock);
 993         }
 994 }
 995
 996 /**
 997  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
 998  * @phba: pointer to lpfc HBA data structure.
 999  *
1000  * This routine will cleanup the txcmplq after the HBA is reset when bringing
1001  * down the SLI Layer.
1002  *
1003  * Return codes
1004  *   void
1005  **/
1006 static void
1007 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
1008 {
1009         struct lpfc_sli *psli = &phba->sli;
1010         struct lpfc_queue *qp = NULL;
1011         struct lpfc_sli_ring *pring;
1012         LIST_HEAD(completions);
1013         int i;
1014         struct lpfc_iocbq *piocb, *next_iocb;
1015
1016         if (phba->sli_rev != LPFC_SLI_REV4) {
1017                 for (i = 0; i < psli->num_rings; i++) {
1018                         pring = &psli->sli3_ring[i];
1019                         spin_lock_irq(&phba->hbalock);
1020                         /* At this point in time the HBA is either reset or DOA
1021                          * Nothing should be on txcmplq as it will
1022                          * NEVER complete.
1023                          */
1024                         list_splice_init(&pring->txcmplq, &completions);
1025                         pring->txcmplq_cnt = 0;
1026                         spin_unlock_irq(&phba->hbalock);
1027
1028                         lpfc_sli_abort_iocb_ring(phba, pring);
1029                 }
1030                 /* Cancel all the IOCBs from the completions list */
1031                 lpfc_sli_cancel_iocbs(phba, &completions,
1032                                       IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
1033                 return;
1034         }
1035         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
1036                 pring = qp->pring;
1037                 if (!pring)
1038                         continue;
1039                 spin_lock_irq(&pring->ring_lock);
1040                 list_for_each_entry_safe(piocb, next_iocb,
1041                                          &pring->txcmplq, list)
1042                         piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
1043                 list_splice_init(&pring->txcmplq, &completions);
1044                 pring->txcmplq_cnt = 0;
1045                 spin_unlock_irq(&pring->ring_lock);
1046                 lpfc_sli_abort_iocb_ring(phba, pring);
1047         }
1048         /* Cancel all the IOCBs from the completions list */
1049         lpfc_sli_cancel_iocbs(phba, &completions,
1050                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
1051 }
1052
1053 /**
1054  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
1055  * @phba: pointer to lpfc HBA data structure.
1056  *
1057  * This routine will do uninitialization after the HBA is reset when bring
1058  * down the SLI Layer.
1059  *
1060  * Return codes
1061  *   0 - success.
1062  *   Any other value - error.
1063  **/
1064 static int
1065 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
1066 {
1067         lpfc_hba_free_post_buf(phba);
1068         lpfc_hba_clean_txcmplq(phba);
1069         return 0;
1070 }
1071
1072 /**
1073  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
1074  * @phba: pointer to lpfc HBA data structure.
1075  *
1076  * This routine will do uninitialization after the HBA is reset when bring
1077  * down the SLI Layer.
1078  *
1079  * Return codes
1080  *   0 - success.
1081  *   Any other value - error.
1082  **/
1083 static int
1084 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
1085 {
1086         struct lpfc_io_buf *psb, *psb_next;
1087         struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
1088         struct lpfc_sli4_hdw_queue *qp;
1089         LIST_HEAD(aborts);
1090         LIST_HEAD(nvme_aborts);
1091         LIST_HEAD(nvmet_aborts);
1092         struct lpfc_sglq *sglq_entry = NULL;
1093         int cnt, idx;
1094
1095
1096         lpfc_sli_hbqbuf_free_all(phba);
1097         lpfc_hba_clean_txcmplq(phba);
1098
1099         /* At this point in time the HBA is either reset or DOA. Either
1100          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
1101          * on the lpfc_els_sgl_list so that it can either be freed if the
1102          * driver is unloading or reposted if the driver is restarting
1103          * the port.
1104          */
1105
1106         /* sgl_list_lock required because worker thread uses this
1107          * list.
1108          */
1109         spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
1110         list_for_each_entry(sglq_entry,
1111                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
1112                 sglq_entry->state = SGL_FREED;
1113
1114         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
1115                         &phba->sli4_hba.lpfc_els_sgl_list);
1116
1117
1118         spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
1119
1120         /* abts_xxxx_buf_list_lock required because worker thread uses this
1121          * list.
1122          */
1123         spin_lock_irq(&phba->hbalock);
1124         cnt = 0;
1125         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
1126                 qp = &phba->sli4_hba.hdwq[idx];
1127
1128                 spin_lock(&qp->abts_io_buf_list_lock);
1129                 list_splice_init(&qp->lpfc_abts_io_buf_list,
1130                                  &aborts);
1131
1132                 list_for_each_entry_safe(psb, psb_next, &aborts, list) {
1133                         psb->pCmd = NULL;
1134                         psb->status = IOSTAT_SUCCESS;
1135                         cnt++;
1136                 }
1137                 spin_lock(&qp->io_buf_list_put_lock);
1138                 list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);
1139                 qp->put_io_bufs += qp->abts_scsi_io_bufs;
1140                 qp->put_io_bufs += qp->abts_nvme_io_bufs;
1141                 qp->abts_scsi_io_bufs = 0;
1142                 qp->abts_nvme_io_bufs = 0;
1143                 spin_unlock(&qp->io_buf_list_put_lock);
1144                 spin_unlock(&qp->abts_io_buf_list_lock);
1145         }
1146         spin_unlock_irq(&phba->hbalock);
1147
1148         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
1149                 spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1150                 list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1151                                  &nvmet_aborts);
1152                 spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1153                 list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
1154                         ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);
1155                         lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1156                 }
1157         }
1158
1159         lpfc_sli4_free_sp_events(phba);
1160         return cnt;
1161 }
1162
1163 /**
1164  * lpfc_hba_down_post - Wrapper func for hba down post routine
1165  * @phba: pointer to lpfc HBA data structure.
1166  *
1167  * This routine wraps the actual SLI3 or SLI4 routine for performing
1168  * uninitialization after the HBA is reset when bring down the SLI Layer.
1169  *
1170  * Return codes
1171  *   0 - success.
1172  *   Any other value - error.
1173  **/
1174 int
1175 lpfc_hba_down_post(struct lpfc_hba *phba)
1176 {
1177         return (*phba->lpfc_hba_down_post)(phba);
1178 }
1179
1180 /**
1181  * lpfc_hb_timeout - The HBA-timer timeout handler
1182  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1183  *
1184  * This is the HBA-timer timeout handler registered to the lpfc driver. When
1185  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
1186  * work-port-events bitmap and the worker thread is notified. This timeout
1187  * event will be used by the worker thread to invoke the actual timeout
1188  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
1189  * be performed in the timeout handler and the HBA timeout event bit shall
1190  * be cleared by the worker thread after it has taken the event bitmap out.
1191  **/
1192 static void
1193 lpfc_hb_timeout(struct timer_list *t)
1194 {
1195         struct lpfc_hba *phba;
1196         uint32_t tmo_posted;
1197         unsigned long iflag;
1198
1199         phba = timer_container_of(phba, t, hb_tmofunc);
1200
1201         /* Check for heart beat timeout conditions */
1202         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1203         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
1204         if (!tmo_posted)
1205                 phba->pport->work_port_events |= WORKER_HB_TMO;
1206         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1207
1208         /* Tell the worker thread there is work to do */
1209         if (!tmo_posted)
1210                 lpfc_worker_wake_up(phba);
1211         return;
1212 }
1213
1214 /**
1215  * lpfc_rrq_timeout - The RRQ-timer timeout handler
1216  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1217  *
1218  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
1219  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
1220  * work-port-events bitmap and the worker thread is notified. This timeout
1221  * event will be used by the worker thread to invoke the actual timeout
1222  * handler routine, lpfc_rrq_handler. Any periodical operations will
1223  * be performed in the timeout handler and the RRQ timeout event bit shall
1224  * be cleared by the worker thread after it has taken the event bitmap out.
1225  **/
1226 static void
1227 lpfc_rrq_timeout(struct timer_list *t)
1228 {
1229         struct lpfc_hba *phba;
1230
1231         phba = timer_container_of(phba, t, rrq_tmr);
1232         if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
1233                 clear_bit(HBA_RRQ_ACTIVE, &phba->hba_flag);
1234                 return;
1235         }
1236
1237         set_bit(HBA_RRQ_ACTIVE, &phba->hba_flag);
1238         lpfc_worker_wake_up(phba);
1239 }
1240
1241 /**
1242  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
1243  * @phba: pointer to lpfc hba data structure.
1244  * @pmboxq: pointer to the driver internal queue element for mailbox command.
1245  *
1246  * This is the callback function to the lpfc heart-beat mailbox command.
1247  * If configured, the lpfc driver issues the heart-beat mailbox command to
1248  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1249  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1250  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1251  * heart-beat outstanding state. Once the mailbox command comes back and
1252  * no error conditions detected, the heart-beat mailbox command timer is
1253  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1254  * state is cleared for the next heart-beat. If the timer expired with the
1255  * heart-beat outstanding state set, the driver will put the HBA offline.
1256  **/
1257 static void
1258 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1259 {
1260         clear_bit(HBA_HBEAT_INP, &phba->hba_flag);
1261         clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);
1262
1263         /* Check and reset heart-beat timer if necessary */
1264         mempool_free(pmboxq, phba->mbox_mem_pool);
1265         if (!test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag) &&
1266             !(phba->link_state == LPFC_HBA_ERROR) &&
1267             !test_bit(FC_UNLOADING, &phba->pport->load_flag))
1268                 mod_timer(&phba->hb_tmofunc,
1269                           jiffies +
1270                           secs_to_jiffies(LPFC_HB_MBOX_INTERVAL));
1271         return;
1272 }
1273
1274 /*
1275  * lpfc_idle_stat_delay_work - idle_stat tracking
1276  *
1277  * This routine tracks per-eq idle_stat and determines polling decisions.
1278  *
1279  * Return codes:
1280  *   None
1281  **/
1282 static void
1283 lpfc_idle_stat_delay_work(struct work_struct *work)
1284 {
1285         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1286                                              struct lpfc_hba,
1287                                              idle_stat_delay_work);
1288         struct lpfc_queue *eq;
1289         struct lpfc_sli4_hdw_queue *hdwq;
1290         struct lpfc_idle_stat *idle_stat;
1291         u32 i, idle_percent;
1292         u64 wall, wall_idle, diff_wall, diff_idle, busy_time;
1293
1294         if (test_bit(FC_UNLOADING, &phba->pport->load_flag))
1295                 return;
1296
1297         if (phba->link_state == LPFC_HBA_ERROR ||
1298             test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag) ||
1299             phba->cmf_active_mode != LPFC_CFG_OFF)
1300                 goto requeue;
1301
1302         for_each_present_cpu(i) {
1303                 hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];
1304                 eq = hdwq->hba_eq;
1305
1306                 /* Skip if we've already handled this eq's primary CPU */
1307                 if (eq->chann != i)
1308                         continue;
1309
1310                 idle_stat = &phba->sli4_hba.idle_stat[i];
1311
1312                 /* get_cpu_idle_time returns values as running counters. Thus,
1313                  * to know the amount for this period, the prior counter values
1314                  * need to be subtracted from the current counter values.
1315                  * From there, the idle time stat can be calculated as a
1316                  * percentage of 100 - the sum of the other consumption times.
1317                  */
1318                 wall_idle = get_cpu_idle_time(i, &wall, 1);
1319                 diff_idle = wall_idle - idle_stat->prev_idle;
1320                 diff_wall = wall - idle_stat->prev_wall;
1321
1322                 if (diff_wall <= diff_idle)
1323                         busy_time = 0;
1324                 else
1325                         busy_time = diff_wall - diff_idle;
1326
1327                 idle_percent = div64_u64(100 * busy_time, diff_wall);
1328                 idle_percent = 100 - idle_percent;
1329
1330                 if (idle_percent < 15)
1331                         eq->poll_mode = LPFC_QUEUE_WORK;
1332                 else
1333                         eq->poll_mode = LPFC_THREADED_IRQ;
1334
1335                 idle_stat->prev_idle = wall_idle;
1336                 idle_stat->prev_wall = wall;
1337         }
1338
1339 requeue:
1340         schedule_delayed_work(&phba->idle_stat_delay_work,
1341                               msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
1342 }
1343
1344 static void
1345 lpfc_hb_eq_delay_work(struct work_struct *work)
1346 {
1347         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1348                                              struct lpfc_hba, eq_delay_work);
1349         struct lpfc_eq_intr_info *eqi, *eqi_new;
1350         struct lpfc_queue *eq, *eq_next;
1351         unsigned char *ena_delay = NULL;
1352         uint32_t usdelay;
1353         int i;
1354
1355         if (!phba->cfg_auto_imax ||
1356             test_bit(FC_UNLOADING, &phba->pport->load_flag))
1357                 return;
1358
1359         if (phba->link_state == LPFC_HBA_ERROR ||
1360             test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))
1361                 goto requeue;
1362
1363         ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),
1364                             GFP_KERNEL);
1365         if (!ena_delay)
1366                 goto requeue;
1367
1368         for (i = 0; i < phba->cfg_irq_chann; i++) {
1369                 /* Get the EQ corresponding to the IRQ vector */
1370                 eq = phba->sli4_hba.hba_eq_hdl[i].eq;
1371                 if (!eq)
1372                         continue;
1373                 if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {
1374                         eq->q_flag &= ~HBA_EQ_DELAY_CHK;
1375                         ena_delay[eq->last_cpu] = 1;
1376                 }
1377         }
1378
1379         for_each_present_cpu(i) {
1380                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
1381                 if (ena_delay[i]) {
1382                         usdelay = (eqi->icnt >> 10) * LPFC_EQ_DELAY_STEP;
1383                         if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)
1384                                 usdelay = LPFC_MAX_AUTO_EQ_DELAY;
1385                 } else {
1386                         usdelay = 0;
1387                 }
1388
1389                 eqi->icnt = 0;
1390
1391                 list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {
1392                         if (unlikely(eq->last_cpu != i)) {
1393                                 eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,
1394                                                       eq->last_cpu);
1395                                 list_move_tail(&eq->cpu_list, &eqi_new->list);
1396                                 continue;
1397                         }
1398                         if (usdelay != eq->q_mode)
1399                                 lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,
1400                                                          usdelay);
1401                 }
1402         }
1403
1404         kfree(ena_delay);
1405
1406 requeue:
1407         queue_delayed_work(phba->wq, &phba->eq_delay_work,
1408                            msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
1409 }
1410
1411 /**
1412  * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution
1413  * @phba: pointer to lpfc hba data structure.
1414  *
1415  * For each heartbeat, this routine does some heuristic methods to adjust
1416  * XRI distribution. The goal is to fully utilize free XRIs.
1417  **/
1418 static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)
1419 {
1420         u32 i;
1421         u32 hwq_count;
1422
1423         hwq_count = phba->cfg_hdw_queue;
1424         for (i = 0; i < hwq_count; i++) {
1425                 /* Adjust XRIs in private pool */
1426                 lpfc_adjust_pvt_pool_count(phba, i);
1427
1428                 /* Adjust high watermark */
1429                 lpfc_adjust_high_watermark(phba, i);
1430
1431 #ifdef LPFC_MXP_STAT
1432                 /* Snapshot pbl, pvt and busy count */
1433                 lpfc_snapshot_mxp(phba, i);
1434 #endif
1435         }
1436 }
1437
1438 /**
1439  * lpfc_issue_hb_mbox - Issues heart-beat mailbox command
1440  * @phba: pointer to lpfc hba data structure.
1441  *
1442  * If a HB mbox is not already in progrees, this routine will allocate
1443  * a LPFC_MBOXQ_t, populate it with a MBX_HEARTBEAT (0x31) command,
1444  * and issue it. The HBA_HBEAT_INP flag means the command is in progress.
1445  **/
1446 int
1447 lpfc_issue_hb_mbox(struct lpfc_hba *phba)
1448 {
1449         LPFC_MBOXQ_t *pmboxq;
1450         int retval;
1451
1452         /* Is a Heartbeat mbox already in progress */
1453         if (test_bit(HBA_HBEAT_INP, &phba->hba_flag))
1454                 return 0;
1455
1456         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1457         if (!pmboxq)
1458                 return -ENOMEM;
1459
1460         lpfc_heart_beat(phba, pmboxq);
1461         pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1462         pmboxq->vport = phba->pport;
1463         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
1464
1465         if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
1466                 mempool_free(pmboxq, phba->mbox_mem_pool);
1467                 return -ENXIO;
1468         }
1469         set_bit(HBA_HBEAT_INP, &phba->hba_flag);
1470
1471         return 0;
1472 }
1473
1474 /**
1475  * lpfc_issue_hb_tmo - Signals heartbeat timer to issue mbox command
1476  * @phba: pointer to lpfc hba data structure.
1477  *
1478  * The heartbeat timer (every 5 sec) will fire. If the HBA_HBEAT_TMO
1479  * flag is set, it will force a MBX_HEARTBEAT mbox command, regardless
1480  * of the value of lpfc_enable_hba_heartbeat.
1481  * If lpfc_enable_hba_heartbeat is set, the timeout routine will always
1482  * try to issue a MBX_HEARTBEAT mbox command.
1483  **/
1484 void
1485 lpfc_issue_hb_tmo(struct lpfc_hba *phba)
1486 {
1487         if (phba->cfg_enable_hba_heartbeat)
1488                 return;
1489         set_bit(HBA_HBEAT_TMO, &phba->hba_flag);
1490 }
1491
1492 /**
1493  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1494  * @phba: pointer to lpfc hba data structure.
1495  *
1496  * This is the actual HBA-timer timeout handler to be invoked by the worker
1497  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1498  * handler performs any periodic operations needed for the device. If such
1499  * periodic event has already been attended to either in the interrupt handler
1500  * or by processing slow-ring or fast-ring events within the HBA-timer
1501  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1502  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1503  * is configured and there is no heart-beat mailbox command outstanding, a
1504  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1505  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1506  * to offline.
1507  **/
1508 void
1509 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1510 {
1511         struct lpfc_vport **vports;
1512         struct lpfc_dmabuf *buf_ptr;
1513         int retval = 0;
1514         int i, tmo;
1515         struct lpfc_sli *psli = &phba->sli;
1516         LIST_HEAD(completions);
1517
1518         if (phba->cfg_xri_rebalancing) {
1519                 /* Multi-XRI pools handler */
1520                 lpfc_hb_mxp_handler(phba);
1521         }
1522
1523         vports = lpfc_create_vport_work_array(phba);
1524         if (vports != NULL)
1525                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1526                         lpfc_rcv_seq_check_edtov(vports[i]);
1527                         lpfc_fdmi_change_check(vports[i]);
1528                 }
1529         lpfc_destroy_vport_work_array(phba, vports);
1530
1531         if (phba->link_state == LPFC_HBA_ERROR ||
1532             test_bit(FC_UNLOADING, &phba->pport->load_flag) ||
1533             test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))
1534                 return;
1535
1536         if (phba->elsbuf_cnt &&
1537                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1538                 spin_lock_irq(&phba->hbalock);
1539                 list_splice_init(&phba->elsbuf, &completions);
1540                 phba->elsbuf_cnt = 0;
1541                 phba->elsbuf_prev_cnt = 0;
1542                 spin_unlock_irq(&phba->hbalock);
1543
1544                 while (!list_empty(&completions)) {
1545                         list_remove_head(&completions, buf_ptr,
1546                                 struct lpfc_dmabuf, list);
1547                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1548                         kfree(buf_ptr);
1549                 }
1550         }
1551         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1552
1553         /* If there is no heart beat outstanding, issue a heartbeat command */
1554         if (phba->cfg_enable_hba_heartbeat) {
1555                 /* If IOs are completing, no need to issue a MBX_HEARTBEAT */
1556                 spin_lock_irq(&phba->pport->work_port_lock);
1557                 if (time_after(phba->last_completion_time +
1558                                 secs_to_jiffies(LPFC_HB_MBOX_INTERVAL),
1559                                 jiffies)) {
1560                         spin_unlock_irq(&phba->pport->work_port_lock);
1561                         if (test_bit(HBA_HBEAT_INP, &phba->hba_flag))
1562                                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1563                         else
1564                                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1565                         goto out;
1566                 }
1567                 spin_unlock_irq(&phba->pport->work_port_lock);
1568
1569                 /* Check if a MBX_HEARTBEAT is already in progress */
1570                 if (test_bit(HBA_HBEAT_INP, &phba->hba_flag)) {
1571                         /*
1572                          * If heart beat timeout called with HBA_HBEAT_INP set
1573                          * we need to give the hb mailbox cmd a chance to
1574                          * complete or TMO.
1575                          */
1576                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1577                                 "0459 Adapter heartbeat still outstanding: "
1578                                 "last compl time was %d ms.\n",
1579                                 jiffies_to_msecs(jiffies
1580                                          - phba->last_completion_time));
1581                         tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1582                 } else {
1583                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1584                                 (list_empty(&psli->mboxq))) {
1585
1586                                 retval = lpfc_issue_hb_mbox(phba);
1587                                 if (retval) {
1588                                         tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1589                                         goto out;
1590                                 }
1591                                 phba->skipped_hb = 0;
1592                         } else if (time_before_eq(phba->last_completion_time,
1593                                         phba->skipped_hb)) {
1594                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1595                                         "2857 Last completion time not "
1596                                         " updated in %d ms\n",
1597                                         jiffies_to_msecs(jiffies
1598                                                  - phba->last_completion_time));
1599                         } else
1600                                 phba->skipped_hb = jiffies;
1601
1602                         tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1603                         goto out;
1604                 }
1605         } else {
1606                 /* Check to see if we want to force a MBX_HEARTBEAT */
1607                 if (test_bit(HBA_HBEAT_TMO, &phba->hba_flag)) {
1608                         retval = lpfc_issue_hb_mbox(phba);
1609                         if (retval)
1610                                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1611                         else
1612                                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1613                         goto out;
1614                 }
1615                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1616         }
1617 out:
1618         mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(tmo));
1619 }
1620
1621 /**
1622  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1623  * @phba: pointer to lpfc hba data structure.
1624  *
1625  * This routine is called to bring the HBA offline when HBA hardware error
1626  * other than Port Error 6 has been detected.
1627  **/
1628 static void
1629 lpfc_offline_eratt(struct lpfc_hba *phba)
1630 {
1631         struct lpfc_sli   *psli = &phba->sli;
1632
1633         spin_lock_irq(&phba->hbalock);
1634         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1635         spin_unlock_irq(&phba->hbalock);
1636         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1637
1638         lpfc_offline(phba);
1639         lpfc_reset_barrier(phba);
1640         spin_lock_irq(&phba->hbalock);
1641         lpfc_sli_brdreset(phba);
1642         spin_unlock_irq(&phba->hbalock);
1643         lpfc_hba_down_post(phba);
1644         lpfc_sli_brdready(phba, HS_MBRDY);
1645         lpfc_unblock_mgmt_io(phba);
1646         phba->link_state = LPFC_HBA_ERROR;
1647         return;
1648 }
1649
1650 /**
1651  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1652  * @phba: pointer to lpfc hba data structure.
1653  *
1654  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1655  * other than Port Error 6 has been detected.
1656  **/
1657 void
1658 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1659 {
1660         spin_lock_irq(&phba->hbalock);
1661         if (phba->link_state == LPFC_HBA_ERROR &&
1662                 test_bit(HBA_PCI_ERR, &phba->bit_flags)) {
1663                 spin_unlock_irq(&phba->hbalock);
1664                 return;
1665         }
1666         phba->link_state = LPFC_HBA_ERROR;
1667         spin_unlock_irq(&phba->hbalock);
1668
1669         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1670         lpfc_sli_flush_io_rings(phba);
1671         lpfc_offline(phba);
1672         lpfc_hba_down_post(phba);
1673         lpfc_unblock_mgmt_io(phba);
1674 }
1675
1676 /**
1677  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1678  * @phba: pointer to lpfc hba data structure.
1679  *
1680  * This routine is invoked to handle the deferred HBA hardware error
1681  * conditions. This type of error is indicated by HBA by setting ER1
1682  * and another ER bit in the host status register. The driver will
1683  * wait until the ER1 bit clears before handling the error condition.
1684  **/
1685 static void
1686 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1687 {
1688         uint32_t old_host_status = phba->work_hs;
1689         struct lpfc_sli *psli = &phba->sli;
1690
1691         /* If the pci channel is offline, ignore possible errors,
1692          * since we cannot communicate with the pci card anyway.
1693          */
1694         if (pci_channel_offline(phba->pcidev)) {
1695                 clear_bit(DEFER_ERATT, &phba->hba_flag);
1696                 return;
1697         }
1698
1699         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1700                         "0479 Deferred Adapter Hardware Error "
1701                         "Data: x%x x%x x%x\n",
1702                         phba->work_hs, phba->work_status[0],
1703                         phba->work_status[1]);
1704
1705         spin_lock_irq(&phba->hbalock);
1706         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1707         spin_unlock_irq(&phba->hbalock);
1708
1709
1710         /*
1711          * Firmware stops when it triggred erratt. That could cause the I/Os
1712          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1713          * SCSI layer retry it after re-establishing link.
1714          */
1715         lpfc_sli_abort_fcp_rings(phba);
1716
1717         /*
1718          * There was a firmware error. Take the hba offline and then
1719          * attempt to restart it.
1720          */
1721         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1722         lpfc_offline(phba);
1723
1724         /* Wait for the ER1 bit to clear.*/
1725         while (phba->work_hs & HS_FFER1) {
1726                 msleep(100);
1727                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1728                         phba->work_hs = UNPLUG_ERR ;
1729                         break;
1730                 }
1731                 /* If driver is unloading let the worker thread continue */
1732                 if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
1733                         phba->work_hs = 0;
1734                         break;
1735                 }
1736         }
1737
1738         /*
1739          * This is to ptrotect against a race condition in which
1740          * first write to the host attention register clear the
1741          * host status register.
1742          */
1743         if (!phba->work_hs && !test_bit(FC_UNLOADING, &phba->pport->load_flag))
1744                 phba->work_hs = old_host_status & ~HS_FFER1;
1745
1746         clear_bit(DEFER_ERATT, &phba->hba_flag);
1747         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1748         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1749 }
1750
1751 static void
1752 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1753 {
1754         struct lpfc_board_event_header board_event;
1755         struct Scsi_Host *shost;
1756
1757         board_event.event_type = FC_REG_BOARD_EVENT;
1758         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1759         shost = lpfc_shost_from_vport(phba->pport);
1760         fc_host_post_vendor_event(shost, fc_get_event_number(),
1761                                   sizeof(board_event),
1762                                   (char *) &board_event,
1763                                   LPFC_NL_VENDOR_ID);
1764 }
1765
1766 /**
1767  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1768  * @phba: pointer to lpfc hba data structure.
1769  *
1770  * This routine is invoked to handle the following HBA hardware error
1771  * conditions:
1772  * 1 - HBA error attention interrupt
1773  * 2 - DMA ring index out of range
1774  * 3 - Mailbox command came back as unknown
1775  **/
1776 static void
1777 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1778 {
1779         struct lpfc_vport *vport = phba->pport;
1780         struct lpfc_sli   *psli = &phba->sli;
1781         uint32_t event_data;
1782         unsigned long temperature;
1783         struct temp_event temp_event_data;
1784         struct Scsi_Host  *shost;
1785
1786         /* If the pci channel is offline, ignore possible errors,
1787          * since we cannot communicate with the pci card anyway.
1788          */
1789         if (pci_channel_offline(phba->pcidev)) {
1790                 clear_bit(DEFER_ERATT, &phba->hba_flag);
1791                 return;
1792         }
1793
1794         /* If resets are disabled then leave the HBA alone and return */
1795         if (!phba->cfg_enable_hba_reset)
1796                 return;
1797
1798         /* Send an internal error event to mgmt application */
1799         lpfc_board_errevt_to_mgmt(phba);
1800
1801         if (test_bit(DEFER_ERATT, &phba->hba_flag))
1802                 lpfc_handle_deferred_eratt(phba);
1803
1804         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1805                 if (phba->work_hs & HS_FFER6)
1806                         /* Re-establishing Link */
1807                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1808                                         "1301 Re-establishing Link "
1809                                         "Data: x%x x%x x%x\n",
1810                                         phba->work_hs, phba->work_status[0],
1811                                         phba->work_status[1]);
1812                 if (phba->work_hs & HS_FFER8)
1813                         /* Device Zeroization */
1814                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1815                                         "2861 Host Authentication device "
1816                                         "zeroization Data:x%x x%x x%x\n",
1817                                         phba->work_hs, phba->work_status[0],
1818                                         phba->work_status[1]);
1819
1820                 spin_lock_irq(&phba->hbalock);
1821                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1822                 spin_unlock_irq(&phba->hbalock);
1823
1824                 /*
1825                 * Firmware stops when it triggled erratt with HS_FFER6.
1826                 * That could cause the I/Os dropped by the firmware.
1827                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1828                 * retry it after re-establishing link.
1829                 */
1830                 lpfc_sli_abort_fcp_rings(phba);
1831
1832                 /*
1833                  * There was a firmware error.  Take the hba offline and then
1834                  * attempt to restart it.
1835                  */
1836                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1837                 lpfc_offline(phba);
1838                 lpfc_sli_brdrestart(phba);
1839                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1840                         lpfc_unblock_mgmt_io(phba);
1841                         return;
1842                 }
1843                 lpfc_unblock_mgmt_io(phba);
1844         } else if (phba->work_hs & HS_CRIT_TEMP) {
1845                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1846                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1847                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1848                 temp_event_data.data = (uint32_t)temperature;
1849
1850                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1851                                 "0406 Adapter maximum temperature exceeded "
1852                                 "(%ld), taking this port offline "
1853                                 "Data: x%x x%x x%x\n",
1854                                 temperature, phba->work_hs,
1855                                 phba->work_status[0], phba->work_status[1]);
1856
1857                 shost = lpfc_shost_from_vport(phba->pport);
1858                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1859                                           sizeof(temp_event_data),
1860                                           (char *) &temp_event_data,
1861                                           SCSI_NL_VID_TYPE_PCI
1862                                           | PCI_VENDOR_ID_EMULEX);
1863
1864                 spin_lock_irq(&phba->hbalock);
1865                 phba->over_temp_state = HBA_OVER_TEMP;
1866                 spin_unlock_irq(&phba->hbalock);
1867                 lpfc_offline_eratt(phba);
1868
1869         } else {
1870                 /* The if clause above forces this code path when the status
1871                  * failure is a value other than FFER6. Do not call the offline
1872                  * twice. This is the adapter hardware error path.
1873                  */
1874                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1875                                 "0457 Adapter Hardware Error "
1876                                 "Data: x%x x%x x%x\n",
1877                                 phba->work_hs,
1878                                 phba->work_status[0], phba->work_status[1]);
1879
1880                 event_data = FC_REG_DUMP_EVENT;
1881                 shost = lpfc_shost_from_vport(vport);
1882                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1883                                 sizeof(event_data), (char *) &event_data,
1884                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1885
1886                 lpfc_offline_eratt(phba);
1887         }
1888         return;
1889 }
1890
1891 /**
1892  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1893  * @phba: pointer to lpfc hba data structure.
1894  * @mbx_action: flag for mailbox shutdown action.
1895  * @en_rn_msg: send reset/port recovery message.
1896  * This routine is invoked to perform an SLI4 port PCI function reset in
1897  * response to port status register polling attention. It waits for port
1898  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1899  * During this process, interrupt vectors are freed and later requested
1900  * for handling possible port resource change.
1901  **/
1902 static int
1903 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
1904                             bool en_rn_msg)
1905 {
1906         int rc;
1907         uint32_t intr_mode;
1908         LPFC_MBOXQ_t *mboxq;
1909
1910         /* Notifying the transport that the targets are going offline. */
1911         lpfc_scsi_dev_block(phba);
1912
1913         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
1914             LPFC_SLI_INTF_IF_TYPE_2) {
1915                 /*
1916                  * On error status condition, driver need to wait for port
1917                  * ready before performing reset.
1918                  */
1919                 rc = lpfc_sli4_pdev_status_reg_wait(phba);
1920                 if (rc)
1921                         return rc;
1922         }
1923
1924         /* need reset: attempt for port recovery */
1925         if (en_rn_msg)
1926                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1927                                 "2887 Reset Needed: Attempting Port "
1928                                 "Recovery...\n");
1929
1930         /* If we are no wait, the HBA has been reset and is not
1931          * functional, thus we should clear
1932          * (LPFC_SLI_ACTIVE | LPFC_SLI_MBOX_ACTIVE) flags.
1933          */
1934         if (mbx_action == LPFC_MBX_NO_WAIT) {
1935                 spin_lock_irq(&phba->hbalock);
1936                 phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
1937                 if (phba->sli.mbox_active) {
1938                         mboxq = phba->sli.mbox_active;
1939                         mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
1940                         __lpfc_mbox_cmpl_put(phba, mboxq);
1941                         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1942                         phba->sli.mbox_active = NULL;
1943                 }
1944                 spin_unlock_irq(&phba->hbalock);
1945         }
1946
1947         lpfc_offline_prep(phba, mbx_action);
1948         lpfc_sli_flush_io_rings(phba);
1949         lpfc_nvmels_flush_cmd(phba);
1950         lpfc_offline(phba);
1951         /* release interrupt for possible resource change */
1952         lpfc_sli4_disable_intr(phba);
1953         rc = lpfc_sli_brdrestart(phba);
1954         if (rc) {
1955                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1956                                 "6309 Failed to restart board\n");
1957                 return rc;
1958         }
1959         /* request and enable interrupt */
1960         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1961         if (intr_mode == LPFC_INTR_ERROR) {
1962                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1963                                 "3175 Failed to enable interrupt\n");
1964                 return -EIO;
1965         }
1966         phba->intr_mode = intr_mode;
1967         rc = lpfc_online(phba);
1968         if (rc == 0)
1969                 lpfc_unblock_mgmt_io(phba);
1970
1971         return rc;
1972 }
1973
1974 /**
1975  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1976  * @phba: pointer to lpfc hba data structure.
1977  *
1978  * This routine is invoked to handle the SLI4 HBA hardware error attention
1979  * conditions.
1980  **/
1981 static void
1982 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1983 {
1984         struct lpfc_vport *vport = phba->pport;
1985         uint32_t event_data;
1986         struct Scsi_Host *shost;
1987         uint32_t if_type;
1988         struct lpfc_register portstat_reg = {0};
1989         uint32_t reg_err1, reg_err2;
1990         uint32_t uerrlo_reg, uemasklo_reg;
1991         uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
1992         bool en_rn_msg = true;
1993         struct temp_event temp_event_data;
1994         struct lpfc_register portsmphr_reg;
1995         int rc, i;
1996
1997         /* If the pci channel is offline, ignore possible errors, since
1998          * we cannot communicate with the pci card anyway.
1999          */
2000         if (pci_channel_offline(phba->pcidev)) {
2001                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2002                                 "3166 pci channel is offline\n");
2003                 lpfc_sli_flush_io_rings(phba);
2004                 return;
2005         }
2006
2007         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
2008         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2009         switch (if_type) {
2010         case LPFC_SLI_INTF_IF_TYPE_0:
2011                 pci_rd_rc1 = lpfc_readl(
2012                                 phba->sli4_hba.u.if_type0.UERRLOregaddr,
2013                                 &uerrlo_reg);
2014                 pci_rd_rc2 = lpfc_readl(
2015                                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
2016                                 &uemasklo_reg);
2017                 /* consider PCI bus read error as pci_channel_offline */
2018                 if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
2019                         return;
2020                 if (!test_bit(HBA_RECOVERABLE_UE, &phba->hba_flag)) {
2021                         lpfc_sli4_offline_eratt(phba);
2022                         return;
2023                 }
2024                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2025                                 "7623 Checking UE recoverable");
2026
2027                 for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
2028                         if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
2029                                        &portsmphr_reg.word0))
2030                                 continue;
2031
2032                         smphr_port_status = bf_get(lpfc_port_smphr_port_status,
2033                                                    &portsmphr_reg);
2034                         if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
2035                             LPFC_PORT_SEM_UE_RECOVERABLE)
2036                                 break;
2037                         /*Sleep for 1Sec, before checking SEMAPHORE */
2038                         msleep(1000);
2039                 }
2040
2041                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2042                                 "4827 smphr_port_status x%x : Waited %dSec",
2043                                 smphr_port_status, i);
2044
2045                 /* Recoverable UE, reset the HBA device */
2046                 if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
2047                     LPFC_PORT_SEM_UE_RECOVERABLE) {
2048                         for (i = 0; i < 20; i++) {
2049                                 msleep(1000);
2050                                 if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
2051                                     &portsmphr_reg.word0) &&
2052                                     (LPFC_POST_STAGE_PORT_READY ==
2053                                      bf_get(lpfc_port_smphr_port_status,
2054                                      &portsmphr_reg))) {
2055                                         rc = lpfc_sli4_port_sta_fn_reset(phba,
2056                                                 LPFC_MBX_NO_WAIT, en_rn_msg);
2057                                         if (rc == 0)
2058                                                 return;
2059                                         lpfc_printf_log(phba, KERN_ERR,
2060                                                 LOG_TRACE_EVENT,
2061                                                 "4215 Failed to recover UE");
2062                                         break;
2063                                 }
2064                         }
2065                 }
2066                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2067                                 "7624 Firmware not ready: Failing UE recovery,"
2068                                 " waited %dSec", i);
2069                 phba->link_state = LPFC_HBA_ERROR;
2070                 break;
2071
2072         case LPFC_SLI_INTF_IF_TYPE_2:
2073         case LPFC_SLI_INTF_IF_TYPE_6:
2074                 pci_rd_rc1 = lpfc_readl(
2075                                 phba->sli4_hba.u.if_type2.STATUSregaddr,
2076                                 &portstat_reg.word0);
2077                 /* consider PCI bus read error as pci_channel_offline */
2078                 if (pci_rd_rc1 == -EIO) {
2079                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2080                                 "3151 PCI bus read access failure: x%x\n",
2081                                 readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
2082                         lpfc_sli4_offline_eratt(phba);
2083                         return;
2084                 }
2085                 reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
2086                 reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
2087                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
2088                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2089                                         "2889 Port Overtemperature event, "
2090                                         "taking port offline Data: x%x x%x\n",
2091                                         reg_err1, reg_err2);
2092
2093                         phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
2094                         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
2095                         temp_event_data.event_code = LPFC_CRIT_TEMP;
2096                         temp_event_data.data = 0xFFFFFFFF;
2097
2098                         shost = lpfc_shost_from_vport(phba->pport);
2099                         fc_host_post_vendor_event(shost, fc_get_event_number(),
2100                                                   sizeof(temp_event_data),
2101                                                   (char *)&temp_event_data,
2102                                                   SCSI_NL_VID_TYPE_PCI
2103                                                   | PCI_VENDOR_ID_EMULEX);
2104
2105                         spin_lock_irq(&phba->hbalock);
2106                         phba->over_temp_state = HBA_OVER_TEMP;
2107                         spin_unlock_irq(&phba->hbalock);
2108                         lpfc_sli4_offline_eratt(phba);
2109                         return;
2110                 }
2111                 if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2112                     reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
2113                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2114                                         "3143 Port Down: Firmware Update "
2115                                         "Detected\n");
2116                         en_rn_msg = false;
2117                 } else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2118                          reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2119                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2120                                         "3144 Port Down: Debug Dump\n");
2121                 else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2122                          reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
2123                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2124                                         "3145 Port Down: Provisioning\n");
2125
2126                 /* If resets are disabled then leave the HBA alone and return */
2127                 if (!phba->cfg_enable_hba_reset)
2128                         return;
2129
2130                 /* Check port status register for function reset */
2131                 rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
2132                                 en_rn_msg);
2133                 if (rc == 0) {
2134                         /* don't report event on forced debug dump */
2135                         if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2136                             reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2137                                 return;
2138                         else
2139                                 break;
2140                 }
2141                 /* fall through for not able to recover */
2142                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2143                                 "3152 Unrecoverable error\n");
2144                 lpfc_sli4_offline_eratt(phba);
2145                 break;
2146         case LPFC_SLI_INTF_IF_TYPE_1:
2147         default:
2148                 break;
2149         }
2150         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2151                         "3123 Report dump event to upper layer\n");
2152         /* Send an internal error event to mgmt application */
2153         lpfc_board_errevt_to_mgmt(phba);
2154
2155         event_data = FC_REG_DUMP_EVENT;
2156         shost = lpfc_shost_from_vport(vport);
2157         fc_host_post_vendor_event(shost, fc_get_event_number(),
2158                                   sizeof(event_data), (char *) &event_data,
2159                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
2160 }
2161
2162 /**
2163  * lpfc_handle_eratt - Wrapper func for handling hba error attention
2164  * @phba: pointer to lpfc HBA data structure.
2165  *
2166  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
2167  * routine from the API jump table function pointer from the lpfc_hba struct.
2168  *
2169  * Return codes
2170  *   0 - success.
2171  *   Any other value - error.
2172  **/
2173 void
2174 lpfc_handle_eratt(struct lpfc_hba *phba)
2175 {
2176         (*phba->lpfc_handle_eratt)(phba);
2177 }
2178
2179 /**
2180  * lpfc_handle_latt - The HBA link event handler
2181  * @phba: pointer to lpfc hba data structure.
2182  *
2183  * This routine is invoked from the worker thread to handle a HBA host
2184  * attention link event. SLI3 only.
2185  **/
2186 void
2187 lpfc_handle_latt(struct lpfc_hba *phba)
2188 {
2189         struct lpfc_vport *vport = phba->pport;
2190         struct lpfc_sli   *psli = &phba->sli;
2191         LPFC_MBOXQ_t *pmb;
2192         volatile uint32_t control;
2193         int rc = 0;
2194
2195         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2196         if (!pmb) {
2197                 rc = 1;
2198                 goto lpfc_handle_latt_err_exit;
2199         }
2200
2201         rc = lpfc_mbox_rsrc_prep(phba, pmb);
2202         if (rc) {
2203                 rc = 2;
2204                 mempool_free(pmb, phba->mbox_mem_pool);
2205                 goto lpfc_handle_latt_err_exit;
2206         }
2207
2208         /* Cleanup any outstanding ELS commands */
2209         lpfc_els_flush_all_cmd(phba);
2210         psli->slistat.link_event++;
2211         lpfc_read_topology(phba, pmb, pmb->ctx_buf);
2212         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
2213         pmb->vport = vport;
2214         /* Block ELS IOCBs until we have processed this mbox command */
2215         phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
2216         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
2217         if (rc == MBX_NOT_FINISHED) {
2218                 rc = 4;
2219                 goto lpfc_handle_latt_free_mbuf;
2220         }
2221
2222         /* Clear Link Attention in HA REG */
2223         spin_lock_irq(&phba->hbalock);
2224         writel(HA_LATT, phba->HAregaddr);
2225         readl(phba->HAregaddr); /* flush */
2226         spin_unlock_irq(&phba->hbalock);
2227
2228         return;
2229
2230 lpfc_handle_latt_free_mbuf:
2231         phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2232         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
2233 lpfc_handle_latt_err_exit:
2234         /* Enable Link attention interrupts */
2235         spin_lock_irq(&phba->hbalock);
2236         psli->sli_flag |= LPFC_PROCESS_LA;
2237         control = readl(phba->HCregaddr);
2238         control |= HC_LAINT_ENA;
2239         writel(control, phba->HCregaddr);
2240         readl(phba->HCregaddr); /* flush */
2241
2242         /* Clear Link Attention in HA REG */
2243         writel(HA_LATT, phba->HAregaddr);
2244         readl(phba->HAregaddr); /* flush */
2245         spin_unlock_irq(&phba->hbalock);
2246         lpfc_linkdown(phba);
2247         phba->link_state = LPFC_HBA_ERROR;
2248
2249         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2250                         "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
2251
2252         return;
2253 }
2254
2255 static void
2256 lpfc_fill_vpd(struct lpfc_hba *phba, uint8_t *vpd, int length, int *pindex)
2257 {
2258         int i, j;
2259
2260         while (length > 0) {
2261                 /* Look for Serial Number */
2262                 if ((vpd[*pindex] == 'S') && (vpd[*pindex + 1] == 'N')) {
2263                         *pindex += 2;
2264                         i = vpd[*pindex];
2265                         *pindex += 1;
2266                         j = 0;
2267                         length -= (3+i);
2268                         while (i--) {
2269                                 phba->SerialNumber[j++] = vpd[(*pindex)++];
2270                                 if (j == 31)
2271                                         break;
2272                         }
2273                         phba->SerialNumber[j] = 0;
2274                         continue;
2275                 } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '1')) {
2276                         phba->vpd_flag |= VPD_MODEL_DESC;
2277                         *pindex += 2;
2278                         i = vpd[*pindex];
2279                         *pindex += 1;
2280                         j = 0;
2281                         length -= (3+i);
2282                         while (i--) {
2283                                 phba->ModelDesc[j++] = vpd[(*pindex)++];
2284                                 if (j == 255)
2285                                         break;
2286                         }
2287                         phba->ModelDesc[j] = 0;
2288                         continue;
2289                 } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '2')) {
2290                         phba->vpd_flag |= VPD_MODEL_NAME;
2291                         *pindex += 2;
2292                         i = vpd[*pindex];
2293                         *pindex += 1;
2294                         j = 0;
2295                         length -= (3+i);
2296                         while (i--) {
2297                                 phba->ModelName[j++] = vpd[(*pindex)++];
2298                                 if (j == 79)
2299                                         break;
2300                         }
2301                         phba->ModelName[j] = 0;
2302                         continue;
2303                 } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '3')) {
2304                         phba->vpd_flag |= VPD_PROGRAM_TYPE;
2305                         *pindex += 2;
2306                         i = vpd[*pindex];
2307                         *pindex += 1;
2308                         j = 0;
2309                         length -= (3+i);
2310                         while (i--) {
2311                                 phba->ProgramType[j++] = vpd[(*pindex)++];
2312                                 if (j == 255)
2313                                         break;
2314                         }
2315                         phba->ProgramType[j] = 0;
2316                         continue;
2317                 } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '4')) {
2318                         phba->vpd_flag |= VPD_PORT;
2319                         *pindex += 2;
2320                         i = vpd[*pindex];
2321                         *pindex += 1;
2322                         j = 0;
2323                         length -= (3 + i);
2324                         while (i--) {
2325                                 if ((phba->sli_rev == LPFC_SLI_REV4) &&
2326                                     (phba->sli4_hba.pport_name_sta ==
2327                                      LPFC_SLI4_PPNAME_GET)) {
2328                                         j++;
2329                                         (*pindex)++;
2330                                 } else
2331                                         phba->Port[j++] = vpd[(*pindex)++];
2332                                 if (j == 19)
2333                                         break;
2334                         }
2335                         if ((phba->sli_rev != LPFC_SLI_REV4) ||
2336                             (phba->sli4_hba.pport_name_sta ==
2337                              LPFC_SLI4_PPNAME_NON))
2338                                 phba->Port[j] = 0;
2339                         continue;
2340                 } else {
2341                         *pindex += 2;
2342                         i = vpd[*pindex];
2343                         *pindex += 1;
2344                         *pindex += i;
2345                         length -= (3 + i);
2346                 }
2347         }
2348 }
2349
2350 /**
2351  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
2352  * @phba: pointer to lpfc hba data structure.
2353  * @vpd: pointer to the vital product data.
2354  * @len: length of the vital product data in bytes.
2355  *
2356  * This routine parses the Vital Product Data (VPD). The VPD is treated as
2357  * an array of characters. In this routine, the ModelName, ProgramType, and
2358  * ModelDesc, etc. fields of the phba data structure will be populated.
2359  *
2360  * Return codes
2361  *   0 - pointer to the VPD passed in is NULL
2362  *   1 - success
2363  **/
2364 int
2365 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
2366 {
2367         uint8_t lenlo, lenhi;
2368         int Length;
2369         int i;
2370         int finished = 0;
2371         int index = 0;
2372
2373         if (!vpd)
2374                 return 0;
2375
2376         /* Vital Product */
2377         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2378                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
2379                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
2380                         (uint32_t) vpd[3]);
2381         while (!finished && (index < (len - 4))) {
2382                 switch (vpd[index]) {
2383                 case 0x82:
2384                 case 0x91:
2385                         index += 1;
2386                         lenlo = vpd[index];
2387                         index += 1;
2388                         lenhi = vpd[index];
2389                         index += 1;
2390                         i = ((((unsigned short)lenhi) << 8) + lenlo);
2391                         index += i;
2392                         break;
2393                 case 0x90:
2394                         index += 1;
2395                         lenlo = vpd[index];
2396                         index += 1;
2397                         lenhi = vpd[index];
2398                         index += 1;
2399                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
2400                         if (Length > len - index)
2401                                 Length = len - index;
2402
2403                         lpfc_fill_vpd(phba, vpd, Length, &index);
2404                         finished = 0;
2405                         break;
2406                 case 0x78:
2407                         finished = 1;
2408                         break;
2409                 default:
2410                         index ++;
2411                         break;
2412                 }
2413         }
2414
2415         return(1);
2416 }
2417
2418 /**
2419  * lpfc_get_atto_model_desc - Retrieve ATTO HBA device model name and description
2420  * @phba: pointer to lpfc hba data structure.
2421  * @mdp: pointer to the data structure to hold the derived model name.
2422  * @descp: pointer to the data structure to hold the derived description.
2423  *
2424  * This routine retrieves HBA's description based on its registered PCI device
2425  * ID. The @descp passed into this function points to an array of 256 chars. It
2426  * shall be returned with the model name, maximum speed, and the host bus type.
2427  * The @mdp passed into this function points to an array of 80 chars. When the
2428  * function returns, the @mdp will be filled with the model name.
2429  **/
2430 static void
2431 lpfc_get_atto_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2432 {
2433         uint16_t sub_dev_id = phba->pcidev->subsystem_device;
2434         char *model = "<Unknown>";
2435         int tbolt = 0;
2436
2437         switch (sub_dev_id) {
2438         case PCI_DEVICE_ID_CLRY_161E:
2439                 model = "161E";
2440                 break;
2441         case PCI_DEVICE_ID_CLRY_162E:
2442                 model = "162E";
2443                 break;
2444         case PCI_DEVICE_ID_CLRY_164E:
2445                 model = "164E";
2446                 break;
2447         case PCI_DEVICE_ID_CLRY_161P:
2448                 model = "161P";
2449                 break;
2450         case PCI_DEVICE_ID_CLRY_162P:
2451                 model = "162P";
2452                 break;
2453         case PCI_DEVICE_ID_CLRY_164P:
2454                 model = "164P";
2455                 break;
2456         case PCI_DEVICE_ID_CLRY_321E:
2457                 model = "321E";
2458                 break;
2459         case PCI_DEVICE_ID_CLRY_322E:
2460                 model = "322E";
2461                 break;
2462         case PCI_DEVICE_ID_CLRY_324E:
2463                 model = "324E";
2464                 break;
2465         case PCI_DEVICE_ID_CLRY_321P:
2466                 model = "321P";
2467                 break;
2468         case PCI_DEVICE_ID_CLRY_322P:
2469                 model = "322P";
2470                 break;
2471         case PCI_DEVICE_ID_CLRY_324P:
2472                 model = "324P";
2473                 break;
2474         case PCI_DEVICE_ID_TLFC_2XX2:
2475                 model = "2XX2";
2476                 tbolt = 1;
2477                 break;
2478         case PCI_DEVICE_ID_TLFC_3162:
2479                 model = "3162";
2480                 tbolt = 1;
2481                 break;
2482         case PCI_DEVICE_ID_TLFC_3322:
2483                 model = "3322";
2484                 tbolt = 1;
2485                 break;
2486         default:
2487                 model = "Unknown";
2488                 break;
2489         }
2490
2491         if (mdp && mdp[0] == '\0')
2492                 snprintf(mdp, 79, "%s", model);
2493
2494         if (descp && descp[0] == '\0')
2495                 snprintf(descp, 255,
2496                          "ATTO %s%s, Fibre Channel Adapter Initiator, Port %s",
2497                          (tbolt) ? "ThunderLink FC " : "Celerity FC-",
2498                          model,
2499                          phba->Port);
2500 }
2501
2502 /**
2503  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
2504  * @phba: pointer to lpfc hba data structure.
2505  * @mdp: pointer to the data structure to hold the derived model name.
2506  * @descp: pointer to the data structure to hold the derived description.
2507  *
2508  * This routine retrieves HBA's description based on its registered PCI device
2509  * ID. The @descp passed into this function points to an array of 256 chars. It
2510  * shall be returned with the model name, maximum speed, and the host bus type.
2511  * The @mdp passed into this function points to an array of 80 chars. When the
2512  * function returns, the @mdp will be filled with the model name.
2513  **/
2514 static void
2515 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2516 {
2517         lpfc_vpd_t *vp;
2518         uint16_t dev_id = phba->pcidev->device;
2519         int max_speed;
2520         int GE = 0;
2521         int oneConnect = 0; /* default is not a oneConnect */
2522         struct {
2523                 char *name;
2524                 char *bus;
2525                 char *function;
2526         } m = {"<Unknown>", "", ""};
2527
2528         if (mdp && mdp[0] != '\0'
2529                 && descp && descp[0] != '\0')
2530                 return;
2531
2532         if (phba->pcidev->vendor == PCI_VENDOR_ID_ATTO) {
2533                 lpfc_get_atto_model_desc(phba, mdp, descp);
2534                 return;
2535         }
2536
2537         if (phba->lmt & LMT_64Gb)
2538                 max_speed = 64;
2539         else if (phba->lmt & LMT_32Gb)
2540                 max_speed = 32;
2541         else if (phba->lmt & LMT_16Gb)
2542                 max_speed = 16;
2543         else if (phba->lmt & LMT_10Gb)
2544                 max_speed = 10;
2545         else if (phba->lmt & LMT_8Gb)
2546                 max_speed = 8;
2547         else if (phba->lmt & LMT_4Gb)
2548                 max_speed = 4;
2549         else if (phba->lmt & LMT_2Gb)
2550                 max_speed = 2;
2551         else if (phba->lmt & LMT_1Gb)
2552                 max_speed = 1;
2553         else
2554                 max_speed = 0;
2555
2556         vp = &phba->vpd;
2557
2558         switch (dev_id) {
2559         case PCI_DEVICE_ID_FIREFLY:
2560                 m = (typeof(m)){"LP6000", "PCI",
2561                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2562                 break;
2563         case PCI_DEVICE_ID_SUPERFLY:
2564                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
2565                         m = (typeof(m)){"LP7000", "PCI", ""};
2566                 else
2567                         m = (typeof(m)){"LP7000E", "PCI", ""};
2568                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2569                 break;
2570         case PCI_DEVICE_ID_DRAGONFLY:
2571                 m = (typeof(m)){"LP8000", "PCI",
2572                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2573                 break;
2574         case PCI_DEVICE_ID_CENTAUR:
2575                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
2576                         m = (typeof(m)){"LP9002", "PCI", ""};
2577                 else
2578                         m = (typeof(m)){"LP9000", "PCI", ""};
2579                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2580                 break;
2581         case PCI_DEVICE_ID_RFLY:
2582                 m = (typeof(m)){"LP952", "PCI",
2583                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2584                 break;
2585         case PCI_DEVICE_ID_PEGASUS:
2586                 m = (typeof(m)){"LP9802", "PCI-X",
2587                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2588                 break;
2589         case PCI_DEVICE_ID_THOR:
2590                 m = (typeof(m)){"LP10000", "PCI-X",
2591                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2592                 break;
2593         case PCI_DEVICE_ID_VIPER:
2594                 m = (typeof(m)){"LPX1000",  "PCI-X",
2595                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2596                 break;
2597         case PCI_DEVICE_ID_PFLY:
2598                 m = (typeof(m)){"LP982", "PCI-X",
2599                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2600                 break;
2601         case PCI_DEVICE_ID_TFLY:
2602                 m = (typeof(m)){"LP1050", "PCI-X",
2603                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2604                 break;
2605         case PCI_DEVICE_ID_HELIOS:
2606                 m = (typeof(m)){"LP11000", "PCI-X2",
2607                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2608                 break;
2609         case PCI_DEVICE_ID_HELIOS_SCSP:
2610                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
2611                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2612                 break;
2613         case PCI_DEVICE_ID_HELIOS_DCSP:
2614                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
2615                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2616                 break;
2617         case PCI_DEVICE_ID_NEPTUNE:
2618                 m = (typeof(m)){"LPe1000", "PCIe",
2619                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2620                 break;
2621         case PCI_DEVICE_ID_NEPTUNE_SCSP:
2622                 m = (typeof(m)){"LPe1000-SP", "PCIe",
2623                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2624                 break;
2625         case PCI_DEVICE_ID_NEPTUNE_DCSP:
2626                 m = (typeof(m)){"LPe1002-SP", "PCIe",
2627                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2628                 break;
2629         case PCI_DEVICE_ID_BMID:
2630                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
2631                 break;
2632         case PCI_DEVICE_ID_BSMB:
2633                 m = (typeof(m)){"LP111", "PCI-X2",
2634                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2635                 break;
2636         case PCI_DEVICE_ID_ZEPHYR:
2637                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2638                 break;
2639         case PCI_DEVICE_ID_ZEPHYR_SCSP:
2640                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2641                 break;
2642         case PCI_DEVICE_ID_ZEPHYR_DCSP:
2643                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
2644                 GE = 1;
2645                 break;
2646         case PCI_DEVICE_ID_ZMID:
2647                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
2648                 break;
2649         case PCI_DEVICE_ID_ZSMB:
2650                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
2651                 break;
2652         case PCI_DEVICE_ID_LP101:
2653                 m = (typeof(m)){"LP101", "PCI-X",
2654                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2655                 break;
2656         case PCI_DEVICE_ID_LP10000S:
2657                 m = (typeof(m)){"LP10000-S", "PCI",
2658                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2659                 break;
2660         case PCI_DEVICE_ID_LP11000S:
2661                 m = (typeof(m)){"LP11000-S", "PCI-X2",
2662                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2663                 break;
2664         case PCI_DEVICE_ID_LPE11000S:
2665                 m = (typeof(m)){"LPe11000-S", "PCIe",
2666                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2667                 break;
2668         case PCI_DEVICE_ID_SAT:
2669                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2670                 break;
2671         case PCI_DEVICE_ID_SAT_MID:
2672                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2673                 break;
2674         case PCI_DEVICE_ID_SAT_SMB:
2675                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2676                 break;
2677         case PCI_DEVICE_ID_SAT_DCSP:
2678                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2679                 break;
2680         case PCI_DEVICE_ID_SAT_SCSP:
2681                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2682                 break;
2683         case PCI_DEVICE_ID_SAT_S:
2684                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2685                 break;
2686         case PCI_DEVICE_ID_PROTEUS_VF:
2687                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2688                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2689                 break;
2690         case PCI_DEVICE_ID_PROTEUS_PF:
2691                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2692                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2693                 break;
2694         case PCI_DEVICE_ID_PROTEUS_S:
2695                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2696                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2697                 break;
2698         case PCI_DEVICE_ID_TIGERSHARK:
2699                 oneConnect = 1;
2700                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2701                 break;
2702         case PCI_DEVICE_ID_TOMCAT:
2703                 oneConnect = 1;
2704                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2705                 break;
2706         case PCI_DEVICE_ID_FALCON:
2707                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2708                                 "EmulexSecure Fibre"};
2709                 break;
2710         case PCI_DEVICE_ID_BALIUS:
2711                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2712                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2713                 break;
2714         case PCI_DEVICE_ID_LANCER_FC:
2715                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2716                 break;
2717         case PCI_DEVICE_ID_LANCER_FC_VF:
2718                 m = (typeof(m)){"LPe16000", "PCIe",
2719                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2720                 break;
2721         case PCI_DEVICE_ID_LANCER_FCOE:
2722                 oneConnect = 1;
2723                 m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2724                 break;
2725         case PCI_DEVICE_ID_LANCER_FCOE_VF:
2726                 oneConnect = 1;
2727                 m = (typeof(m)){"OCe15100", "PCIe",
2728                                 "Obsolete, Unsupported FCoE"};
2729                 break;
2730         case PCI_DEVICE_ID_LANCER_G6_FC:
2731                 m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
2732                 break;
2733         case PCI_DEVICE_ID_LANCER_G7_FC:
2734                 m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};
2735                 break;
2736         case PCI_DEVICE_ID_LANCER_G7P_FC:
2737                 m = (typeof(m)){"LPe38000", "PCIe", "Fibre Channel Adapter"};
2738                 break;
2739         case PCI_DEVICE_ID_SKYHAWK:
2740         case PCI_DEVICE_ID_SKYHAWK_VF:
2741                 oneConnect = 1;
2742                 m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2743                 break;
2744         default:
2745                 m = (typeof(m)){"Unknown", "", ""};
2746                 break;
2747         }
2748
2749         if (mdp && mdp[0] == '\0')
2750                 snprintf(mdp, 79,"%s", m.name);
2751         /*
2752          * oneConnect hba requires special processing, they are all initiators
2753          * and we put the port number on the end
2754          */
2755         if (descp && descp[0] == '\0') {
2756                 if (oneConnect)
2757                         snprintf(descp, 255,
2758                                 "Emulex OneConnect %s, %s Initiator %s",
2759                                 m.name, m.function,
2760                                 phba->Port);
2761                 else if (max_speed == 0)
2762                         snprintf(descp, 255,
2763                                 "Emulex %s %s %s",
2764                                 m.name, m.bus, m.function);
2765                 else
2766                         snprintf(descp, 255,
2767                                 "Emulex %s %d%s %s %s",
2768                                 m.name, max_speed, (GE) ? "GE" : "Gb",
2769                                 m.bus, m.function);
2770         }
2771 }
2772
2773 /**
2774  * lpfc_sli3_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2775  * @phba: pointer to lpfc hba data structure.
2776  * @pring: pointer to a IOCB ring.
2777  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2778  *
2779  * This routine posts a given number of IOCBs with the associated DMA buffer
2780  * descriptors specified by the cnt argument to the given IOCB ring.
2781  *
2782  * Return codes
2783  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2784  **/
2785 int
2786 lpfc_sli3_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2787 {
2788         IOCB_t *icmd;
2789         struct lpfc_iocbq *iocb;
2790         struct lpfc_dmabuf *mp1, *mp2;
2791
2792         cnt += pring->missbufcnt;
2793
2794         /* While there are buffers to post */
2795         while (cnt > 0) {
2796                 /* Allocate buffer for  command iocb */
2797                 iocb = lpfc_sli_get_iocbq(phba);
2798                 if (iocb == NULL) {
2799                         pring->missbufcnt = cnt;
2800                         return cnt;
2801                 }
2802                 icmd = &iocb->iocb;
2803
2804                 /* 2 buffers can be posted per command */
2805                 /* Allocate buffer to post */
2806                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2807                 if (mp1)
2808                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2809                 if (!mp1 || !mp1->virt) {
2810                         kfree(mp1);
2811                         lpfc_sli_release_iocbq(phba, iocb);
2812                         pring->missbufcnt = cnt;
2813                         return cnt;
2814                 }
2815
2816                 INIT_LIST_HEAD(&mp1->list);
2817                 /* Allocate buffer to post */
2818                 if (cnt > 1) {
2819                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2820                         if (mp2)
2821                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2822                                                             &mp2->phys);
2823                         if (!mp2 || !mp2->virt) {
2824                                 kfree(mp2);
2825                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2826                                 kfree(mp1);
2827                                 lpfc_sli_release_iocbq(phba, iocb);
2828                                 pring->missbufcnt = cnt;
2829                                 return cnt;
2830                         }
2831
2832                         INIT_LIST_HEAD(&mp2->list);
2833                 } else {
2834                         mp2 = NULL;
2835                 }
2836
2837                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2838                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2839                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2840                 icmd->ulpBdeCount = 1;
2841                 cnt--;
2842                 if (mp2) {
2843                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2844                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2845                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2846                         cnt--;
2847                         icmd->ulpBdeCount = 2;
2848                 }
2849
2850                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2851                 icmd->ulpLe = 1;
2852
2853                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2854                     IOCB_ERROR) {
2855                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2856                         kfree(mp1);
2857                         cnt++;
2858                         if (mp2) {
2859                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2860                                 kfree(mp2);
2861                                 cnt++;
2862                         }
2863                         lpfc_sli_release_iocbq(phba, iocb);
2864                         pring->missbufcnt = cnt;
2865                         return cnt;
2866                 }
2867                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2868                 if (mp2)
2869                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2870         }
2871         pring->missbufcnt = 0;
2872         return 0;
2873 }
2874
2875 /**
2876  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2877  * @phba: pointer to lpfc hba data structure.
2878  *
2879  * This routine posts initial receive IOCB buffers to the ELS ring. The
2880  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2881  * set to 64 IOCBs. SLI3 only.
2882  *
2883  * Return codes
2884  *   0 - success (currently always success)
2885  **/
2886 static int
2887 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2888 {
2889         struct lpfc_sli *psli = &phba->sli;
2890
2891         /* Ring 0, ELS / CT buffers */
2892         lpfc_sli3_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2893         /* Ring 2 - FCP no buffers needed */
2894
2895         return 0;
2896 }
2897
2898 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2899
2900 /**
2901  * lpfc_sha_init - Set up initial array of hash table entries
2902  * @HashResultPointer: pointer to an array as hash table.
2903  *
2904  * This routine sets up the initial values to the array of hash table entries
2905  * for the LC HBAs.
2906  **/
2907 static void
2908 lpfc_sha_init(uint32_t * HashResultPointer)
2909 {
2910         HashResultPointer[0] = 0x67452301;
2911         HashResultPointer[1] = 0xEFCDAB89;
2912         HashResultPointer[2] = 0x98BADCFE;
2913         HashResultPointer[3] = 0x10325476;
2914         HashResultPointer[4] = 0xC3D2E1F0;
2915 }
2916
2917 /**
2918  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2919  * @HashResultPointer: pointer to an initial/result hash table.
2920  * @HashWorkingPointer: pointer to an working hash table.
2921  *
2922  * This routine iterates an initial hash table pointed by @HashResultPointer
2923  * with the values from the working hash table pointeed by @HashWorkingPointer.
2924  * The results are putting back to the initial hash table, returned through
2925  * the @HashResultPointer as the result hash table.
2926  **/
2927 static void
2928 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2929 {
2930         int t;
2931         uint32_t TEMP;
2932         uint32_t A, B, C, D, E;
2933         t = 16;
2934         do {
2935                 HashWorkingPointer[t] =
2936                     S(1,
2937                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2938                                                                      8] ^
2939                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2940         } while (++t <= 79);
2941         t = 0;
2942         A = HashResultPointer[0];
2943         B = HashResultPointer[1];
2944         C = HashResultPointer[2];
2945         D = HashResultPointer[3];
2946         E = HashResultPointer[4];
2947
2948         do {
2949                 if (t < 20) {
2950                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2951                 } else if (t < 40) {
2952                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2953                 } else if (t < 60) {
2954                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2955                 } else {
2956                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2957                 }
2958                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2959                 E = D;
2960                 D = C;
2961                 C = S(30, B);
2962                 B = A;
2963                 A = TEMP;
2964         } while (++t <= 79);
2965
2966         HashResultPointer[0] += A;
2967         HashResultPointer[1] += B;
2968         HashResultPointer[2] += C;
2969         HashResultPointer[3] += D;
2970         HashResultPointer[4] += E;
2971
2972 }
2973
2974 /**
2975  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2976  * @RandomChallenge: pointer to the entry of host challenge random number array.
2977  * @HashWorking: pointer to the entry of the working hash array.
2978  *
2979  * This routine calculates the working hash array referred by @HashWorking
2980  * from the challenge random numbers associated with the host, referred by
2981  * @RandomChallenge. The result is put into the entry of the working hash
2982  * array and returned by reference through @HashWorking.
2983  **/
2984 static void
2985 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2986 {
2987         *HashWorking = (*RandomChallenge ^ *HashWorking);
2988 }
2989
2990 /**
2991  * lpfc_hba_init - Perform special handling for LC HBA initialization
2992  * @phba: pointer to lpfc hba data structure.
2993  * @hbainit: pointer to an array of unsigned 32-bit integers.
2994  *
2995  * This routine performs the special handling for LC HBA initialization.
2996  **/
2997 void
2998 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2999 {
3000         int t;
3001         uint32_t *HashWorking;
3002         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
3003
3004         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
3005         if (!HashWorking)
3006                 return;
3007
3008         HashWorking[0] = HashWorking[78] = *pwwnn++;
3009         HashWorking[1] = HashWorking[79] = *pwwnn;
3010
3011         for (t = 0; t < 7; t++)
3012                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
3013
3014         lpfc_sha_init(hbainit);
3015         lpfc_sha_iterate(hbainit, HashWorking);
3016         kfree(HashWorking);
3017 }
3018
3019 /**
3020  * lpfc_cleanup - Performs vport cleanups before deleting a vport
3021  * @vport: pointer to a virtual N_Port data structure.
3022  *
3023  * This routine performs the necessary cleanups before deleting the @vport.
3024  * It invokes the discovery state machine to perform necessary state
3025  * transitions and to release the ndlps associated with the @vport. Note,
3026  * the physical port is treated as @vport 0.
3027  **/
3028 void
3029 lpfc_cleanup(struct lpfc_vport *vport)
3030 {
3031         struct lpfc_hba   *phba = vport->phba;
3032         struct lpfc_nodelist *ndlp, *next_ndlp;
3033         int i = 0;
3034
3035         if (phba->link_state > LPFC_LINK_DOWN)
3036                 lpfc_port_link_failure(vport);
3037
3038         /* Clean up VMID resources */
3039         if (lpfc_is_vmid_enabled(phba))
3040                 lpfc_vmid_vport_cleanup(vport);
3041
3042         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3043                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
3044                     ndlp->nlp_DID == Fabric_DID) {
3045                         /* Just free up ndlp with Fabric_DID for vports */
3046                         lpfc_nlp_put(ndlp);
3047                         continue;
3048                 }
3049
3050                 if (ndlp->nlp_DID == Fabric_Cntl_DID &&
3051                     ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
3052                         lpfc_nlp_put(ndlp);
3053                         continue;
3054                 }
3055
3056                 /* Fabric Ports not in UNMAPPED state are cleaned up in the
3057                  * DEVICE_RM event.
3058                  */
3059                 if (ndlp->nlp_type & NLP_FABRIC &&
3060                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
3061                         lpfc_disc_state_machine(vport, ndlp, NULL,
3062                                         NLP_EVT_DEVICE_RECOVERY);
3063
3064                 if (!(ndlp->fc4_xpt_flags & (NVME_XPT_REGD|SCSI_XPT_REGD)))
3065                         lpfc_disc_state_machine(vport, ndlp, NULL,
3066                                         NLP_EVT_DEVICE_RM);
3067         }
3068
3069         /* This is a special case flush to return all
3070          * IOs before entering this loop. There are
3071          * two points in the code where a flush is
3072          * avoided if the FC_UNLOADING flag is set.
3073          * one is in the multipool destroy,
3074          * (this prevents a crash) and the other is
3075          * in the nvme abort handler, ( also prevents
3076          * a crash). Both of these exceptions are
3077          * cases where the slot is still accessible.
3078          * The flush here is only when the pci slot
3079          * is offline.
3080          */
3081         if (test_bit(FC_UNLOADING, &vport->load_flag) &&
3082             pci_channel_offline(phba->pcidev))
3083                 lpfc_sli_flush_io_rings(vport->phba);
3084
3085         /* At this point, ALL ndlp's should be gone
3086          * because of the previous NLP_EVT_DEVICE_RM.
3087          * Lets wait for this to happen, if needed.
3088          */
3089         while (!list_empty(&vport->fc_nodes)) {
3090                 if (i++ > 3000) {
3091                         lpfc_printf_vlog(vport, KERN_ERR,
3092                                          LOG_TRACE_EVENT,
3093                                 "0233 Nodelist not empty\n");
3094                         list_for_each_entry_safe(ndlp, next_ndlp,
3095                                                 &vport->fc_nodes, nlp_listp) {
3096                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
3097                                                  LOG_DISCOVERY,
3098                                                  "0282 did:x%x ndlp:x%px "
3099                                                  "refcnt:%d xflags x%x "
3100                                                  "nflag x%lx\n",
3101                                                  ndlp->nlp_DID, (void *)ndlp,
3102                                                  kref_read(&ndlp->kref),
3103                                                  ndlp->fc4_xpt_flags,
3104                                                  ndlp->nlp_flag);
3105                         }
3106                         break;
3107                 }
3108
3109                 /* Wait for any activity on ndlps to settle */
3110                 msleep(10);
3111         }
3112         lpfc_cleanup_vports_rrqs(vport, NULL);
3113 }
3114
3115 /**
3116  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
3117  * @vport: pointer to a virtual N_Port data structure.
3118  *
3119  * This routine stops all the timers associated with a @vport. This function
3120  * is invoked before disabling or deleting a @vport. Note that the physical
3121  * port is treated as @vport 0.
3122  **/
3123 void
3124 lpfc_stop_vport_timers(struct lpfc_vport *vport)
3125 {
3126         timer_delete_sync(&vport->els_tmofunc);
3127         timer_delete_sync(&vport->delayed_disc_tmo);
3128         lpfc_can_disctmo(vport);
3129         return;
3130 }
3131
3132 /**
3133  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
3134  * @phba: pointer to lpfc hba data structure.
3135  *
3136  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
3137  * caller of this routine should already hold the host lock.
3138  **/
3139 void
3140 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
3141 {
3142         /* Clear pending FCF rediscovery wait flag */
3143         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
3144
3145         /* Now, try to stop the timer */
3146         timer_delete(&phba->fcf.redisc_wait);
3147 }
3148
3149 /**
3150  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
3151  * @phba: pointer to lpfc hba data structure.
3152  *
3153  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
3154  * checks whether the FCF rediscovery wait timer is pending with the host
3155  * lock held before proceeding with disabling the timer and clearing the
3156  * wait timer pendig flag.
3157  **/
3158 void
3159 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
3160 {
3161         spin_lock_irq(&phba->hbalock);
3162         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3163                 /* FCF rediscovery timer already fired or stopped */
3164                 spin_unlock_irq(&phba->hbalock);
3165                 return;
3166         }
3167         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3168         /* Clear failover in progress flags */
3169         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
3170         spin_unlock_irq(&phba->hbalock);
3171 }
3172
3173 /**
3174  * lpfc_cmf_stop - Stop CMF processing
3175  * @phba: pointer to lpfc hba data structure.
3176  *
3177  * This is called when the link goes down or if CMF mode is turned OFF.
3178  * It is also called when going offline or unloaded just before the
3179  * congestion info buffer is unregistered.
3180  **/
3181 void
3182 lpfc_cmf_stop(struct lpfc_hba *phba)
3183 {
3184         int cpu;
3185         struct lpfc_cgn_stat *cgs;
3186
3187         /* We only do something if CMF is enabled */
3188         if (!phba->sli4_hba.pc_sli4_params.cmf)
3189                 return;
3190
3191         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
3192                         "6221 Stop CMF / Cancel Timer\n");
3193
3194         /* Cancel the CMF timer */
3195         hrtimer_cancel(&phba->cmf_stats_timer);
3196         hrtimer_cancel(&phba->cmf_timer);
3197
3198         /* Zero CMF counters */
3199         atomic_set(&phba->cmf_busy, 0);
3200         for_each_present_cpu(cpu) {
3201                 cgs = per_cpu_ptr(phba->cmf_stat, cpu);
3202                 atomic64_set(&cgs->total_bytes, 0);
3203                 atomic64_set(&cgs->rcv_bytes, 0);
3204                 atomic_set(&cgs->rx_io_cnt, 0);
3205                 atomic64_set(&cgs->rx_latency, 0);
3206         }
3207         atomic_set(&phba->cmf_bw_wait, 0);
3208
3209         /* Resume any blocked IO - Queue unblock on workqueue */
3210         queue_work(phba->wq, &phba->unblock_request_work);
3211 }
3212
3213 static inline uint64_t
3214 lpfc_get_max_line_rate(struct lpfc_hba *phba)
3215 {
3216         uint64_t rate = lpfc_sli_port_speed_get(phba);
3217
3218         return ((((unsigned long)rate) * 1024 * 1024) / 10);
3219 }
3220
3221 void
3222 lpfc_cmf_signal_init(struct lpfc_hba *phba)
3223 {
3224         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
3225                         "6223 Signal CMF init\n");
3226
3227         /* Use the new fc_linkspeed to recalculate */
3228         phba->cmf_interval_rate = LPFC_CMF_INTERVAL;
3229         phba->cmf_max_line_rate = lpfc_get_max_line_rate(phba);
3230         phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate *
3231                                             phba->cmf_interval_rate, 1000);
3232         phba->cmf_max_bytes_per_interval = phba->cmf_link_byte_count;
3233
3234         /* This is a signal to firmware to sync up CMF BW with link speed */
3235         lpfc_issue_cmf_sync_wqe(phba, 0, 0);
3236 }
3237
3238 /**
3239  * lpfc_cmf_start - Start CMF processing
3240  * @phba: pointer to lpfc hba data structure.
3241  *
3242  * This is called when the link comes up or if CMF mode is turned OFF
3243  * to Monitor or Managed.
3244  **/
3245 void
3246 lpfc_cmf_start(struct lpfc_hba *phba)
3247 {
3248         struct lpfc_cgn_stat *cgs;
3249         int cpu;
3250
3251         /* We only do something if CMF is enabled */
3252         if (!phba->sli4_hba.pc_sli4_params.cmf ||
3253             phba->cmf_active_mode == LPFC_CFG_OFF)
3254                 return;
3255
3256         /* Reinitialize congestion buffer info */
3257         lpfc_init_congestion_buf(phba);
3258
3259         atomic_set(&phba->cgn_fabric_warn_cnt, 0);
3260         atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
3261         atomic_set(&phba->cgn_sync_alarm_cnt, 0);
3262         atomic_set(&phba->cgn_sync_warn_cnt, 0);
3263
3264         atomic_set(&phba->cmf_busy, 0);
3265         for_each_present_cpu(cpu) {
3266                 cgs = per_cpu_ptr(phba->cmf_stat, cpu);
3267                 atomic64_set(&cgs->total_bytes, 0);
3268                 atomic64_set(&cgs->rcv_bytes, 0);
3269                 atomic_set(&cgs->rx_io_cnt, 0);
3270                 atomic64_set(&cgs->rx_latency, 0);
3271         }
3272         phba->cmf_latency.tv_sec = 0;
3273         phba->cmf_latency.tv_nsec = 0;
3274
3275         lpfc_cmf_signal_init(phba);
3276
3277         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
3278                         "6222 Start CMF / Timer\n");
3279
3280         phba->cmf_timer_cnt = 0;
3281         hrtimer_start(&phba->cmf_timer,
3282                       ktime_set(0, LPFC_CMF_INTERVAL * NSEC_PER_MSEC),
3283                       HRTIMER_MODE_REL);
3284         hrtimer_start(&phba->cmf_stats_timer,
3285                       ktime_set(0, LPFC_SEC_MIN * NSEC_PER_SEC),
3286                       HRTIMER_MODE_REL);
3287         /* Setup for latency check in IO cmpl routines */
3288         ktime_get_real_ts64(&phba->cmf_latency);
3289
3290         atomic_set(&phba->cmf_bw_wait, 0);
3291         atomic_set(&phba->cmf_stop_io, 0);
3292 }
3293
3294 /**
3295  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
3296  * @phba: pointer to lpfc hba data structure.
3297  *
3298  * This routine stops all the timers associated with a HBA. This function is
3299  * invoked before either putting a HBA offline or unloading the driver.
3300  **/
3301 void
3302 lpfc_stop_hba_timers(struct lpfc_hba *phba)
3303 {
3304         if (phba->pport)
3305                 lpfc_stop_vport_timers(phba->pport);
3306         cancel_delayed_work_sync(&phba->eq_delay_work);
3307         cancel_delayed_work_sync(&phba->idle_stat_delay_work);
3308         timer_delete_sync(&phba->sli.mbox_tmo);
3309         timer_delete_sync(&phba->fabric_block_timer);
3310         timer_delete_sync(&phba->eratt_poll);
3311         timer_delete_sync(&phba->hb_tmofunc);
3312         if (phba->sli_rev == LPFC_SLI_REV4) {
3313                 timer_delete_sync(&phba->rrq_tmr);
3314                 clear_bit(HBA_RRQ_ACTIVE, &phba->hba_flag);
3315         }
3316         clear_bit(HBA_HBEAT_INP, &phba->hba_flag);
3317         clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);
3318
3319         switch (phba->pci_dev_grp) {
3320         case LPFC_PCI_DEV_LP:
3321                 /* Stop any LightPulse device specific driver timers */
3322                 timer_delete_sync(&phba->fcp_poll_timer);
3323                 break;
3324         case LPFC_PCI_DEV_OC:
3325                 /* Stop any OneConnect device specific driver timers */
3326                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3327                 break;
3328         default:
3329                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3330                                 "0297 Invalid device group (x%x)\n",
3331                                 phba->pci_dev_grp);
3332                 break;
3333         }
3334         return;
3335 }
3336
3337 /**
3338  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
3339  * @phba: pointer to lpfc hba data structure.
3340  * @mbx_action: flag for mailbox no wait action.
3341  *
3342  * This routine marks a HBA's management interface as blocked. Once the HBA's
3343  * management interface is marked as blocked, all the user space access to
3344  * the HBA, whether they are from sysfs interface or libdfc interface will
3345  * all be blocked. The HBA is set to block the management interface when the
3346  * driver prepares the HBA interface for online or offline.
3347  **/
3348 static void
3349 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
3350 {
3351         unsigned long iflag;
3352         uint8_t actcmd = MBX_HEARTBEAT;
3353         unsigned long timeout;
3354
3355         spin_lock_irqsave(&phba->hbalock, iflag);
3356         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
3357         spin_unlock_irqrestore(&phba->hbalock, iflag);
3358         if (mbx_action == LPFC_MBX_NO_WAIT)
3359                 return;
3360         timeout = secs_to_jiffies(LPFC_MBOX_TMO) + jiffies;
3361         spin_lock_irqsave(&phba->hbalock, iflag);
3362         if (phba->sli.mbox_active) {
3363                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
3364                 /* Determine how long we might wait for the active mailbox
3365                  * command to be gracefully completed by firmware.
3366                  */
3367                 timeout = secs_to_jiffies(lpfc_mbox_tmo_val(phba,
3368                                 phba->sli.mbox_active)) + jiffies;
3369         }
3370         spin_unlock_irqrestore(&phba->hbalock, iflag);
3371
3372         /* Wait for the outstnading mailbox command to complete */
3373         while (phba->sli.mbox_active) {
3374                 /* Check active mailbox complete status every 2ms */
3375                 msleep(2);
3376                 if (time_after(jiffies, timeout)) {
3377                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3378                                         "2813 Mgmt IO is Blocked %x "
3379                                         "- mbox cmd %x still active\n",
3380                                         phba->sli.sli_flag, actcmd);
3381                         break;
3382                 }
3383         }
3384 }
3385
3386 /**
3387  * lpfc_sli4_node_rpi_restore - Recover assigned RPIs for active nodes.
3388  * @phba: pointer to lpfc hba data structure.
3389  *
3390  * Allocate RPIs for all active remote nodes. This is needed whenever
3391  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
3392  * is to fixup the temporary rpi assignments.
3393  **/
3394 void
3395 lpfc_sli4_node_rpi_restore(struct lpfc_hba *phba)
3396 {
3397         struct lpfc_nodelist  *ndlp, *next_ndlp;
3398         struct lpfc_vport **vports;
3399         int i, rpi;
3400
3401         if (phba->sli_rev != LPFC_SLI_REV4)
3402                 return;
3403
3404         vports = lpfc_create_vport_work_array(phba);
3405         if (!vports)
3406                 return;
3407
3408         for (i = 0; i <= phba->max_vports && vports[i]; i++) {
3409                 if (test_bit(FC_UNLOADING, &vports[i]->load_flag))
3410                         continue;
3411
3412                 list_for_each_entry_safe(ndlp, next_ndlp,
3413                                          &vports[i]->fc_nodes,
3414                                          nlp_listp) {
3415                         rpi = lpfc_sli4_alloc_rpi(phba);
3416                         if (rpi == LPFC_RPI_ALLOC_ERROR) {
3417                                 lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3418                                                  LOG_NODE | LOG_DISCOVERY,
3419                                                  "0099 RPI alloc error for "
3420                                                  "ndlp x%px DID:x%06x "
3421                                                  "flg:x%lx\n",
3422                                                  ndlp, ndlp->nlp_DID,
3423                                                  ndlp->nlp_flag);
3424                                 continue;
3425                         }
3426                         ndlp->nlp_rpi = rpi;
3427                         lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3428                                          LOG_NODE | LOG_DISCOVERY,
3429                                          "0009 Assign RPI x%x to ndlp x%px "
3430                                          "DID:x%06x flg:x%lx\n",
3431                                          ndlp->nlp_rpi, ndlp, ndlp->nlp_DID,
3432                                          ndlp->nlp_flag);
3433                 }
3434         }
3435         lpfc_destroy_vport_work_array(phba, vports);
3436 }
3437
3438 /**
3439  * lpfc_create_expedite_pool - create expedite pool
3440  * @phba: pointer to lpfc hba data structure.
3441  *
3442  * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0
3443  * to expedite pool. Mark them as expedite.
3444  **/
3445 static void lpfc_create_expedite_pool(struct lpfc_hba *phba)
3446 {
3447         struct lpfc_sli4_hdw_queue *qp;
3448         struct lpfc_io_buf *lpfc_ncmd;
3449         struct lpfc_io_buf *lpfc_ncmd_next;
3450         struct lpfc_epd_pool *epd_pool;
3451         unsigned long iflag;
3452
3453         epd_pool = &phba->epd_pool;
3454         qp = &phba->sli4_hba.hdwq[0];
3455
3456         spin_lock_init(&epd_pool->lock);
3457         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3458         spin_lock(&epd_pool->lock);
3459         INIT_LIST_HEAD(&epd_pool->list);
3460         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3461                                  &qp->lpfc_io_buf_list_put, list) {
3462                 list_move_tail(&lpfc_ncmd->list, &epd_pool->list);
3463                 lpfc_ncmd->expedite = true;
3464                 qp->put_io_bufs--;
3465                 epd_pool->count++;
3466                 if (epd_pool->count >= XRI_BATCH)
3467                         break;
3468         }
3469         spin_unlock(&epd_pool->lock);
3470         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3471 }
3472
3473 /**
3474  * lpfc_destroy_expedite_pool - destroy expedite pool
3475  * @phba: pointer to lpfc hba data structure.
3476  *
3477  * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put
3478  * of HWQ 0. Clear the mark.
3479  **/
3480 static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)
3481 {
3482         struct lpfc_sli4_hdw_queue *qp;
3483         struct lpfc_io_buf *lpfc_ncmd;
3484         struct lpfc_io_buf *lpfc_ncmd_next;
3485         struct lpfc_epd_pool *epd_pool;
3486         unsigned long iflag;
3487
3488         epd_pool = &phba->epd_pool;
3489         qp = &phba->sli4_hba.hdwq[0];
3490
3491         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3492         spin_lock(&epd_pool->lock);
3493         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3494                                  &epd_pool->list, list) {
3495                 list_move_tail(&lpfc_ncmd->list,
3496                                &qp->lpfc_io_buf_list_put);
3497                 lpfc_ncmd->flags = false;
3498                 qp->put_io_bufs++;
3499                 epd_pool->count--;
3500         }
3501         spin_unlock(&epd_pool->lock);
3502         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3503 }
3504
3505 /**
3506  * lpfc_create_multixri_pools - create multi-XRI pools
3507  * @phba: pointer to lpfc hba data structure.
3508  *
3509  * This routine initialize public, private per HWQ. Then, move XRIs from
3510  * lpfc_io_buf_list_put to public pool. High and low watermark are also
3511  * Initialized.
3512  **/
3513 void lpfc_create_multixri_pools(struct lpfc_hba *phba)
3514 {
3515         u32 i, j;
3516         u32 hwq_count;
3517         u32 count_per_hwq;
3518         struct lpfc_io_buf *lpfc_ncmd;
3519         struct lpfc_io_buf *lpfc_ncmd_next;
3520         unsigned long iflag;
3521         struct lpfc_sli4_hdw_queue *qp;
3522         struct lpfc_multixri_pool *multixri_pool;
3523         struct lpfc_pbl_pool *pbl_pool;
3524         struct lpfc_pvt_pool *pvt_pool;
3525
3526         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3527                         "1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",
3528                         phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,
3529                         phba->sli4_hba.io_xri_cnt);
3530
3531         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3532                 lpfc_create_expedite_pool(phba);
3533
3534         hwq_count = phba->cfg_hdw_queue;
3535         count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;
3536
3537         for (i = 0; i < hwq_count; i++) {
3538                 multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);
3539
3540                 if (!multixri_pool) {
3541                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3542                                         "1238 Failed to allocate memory for "
3543                                         "multixri_pool\n");
3544
3545                         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3546                                 lpfc_destroy_expedite_pool(phba);
3547
3548                         j = 0;
3549                         while (j < i) {
3550                                 qp = &phba->sli4_hba.hdwq[j];
3551                                 kfree(qp->p_multixri_pool);
3552                                 j++;
3553                         }
3554                         phba->cfg_xri_rebalancing = 0;
3555                         return;
3556                 }
3557
3558                 qp = &phba->sli4_hba.hdwq[i];
3559                 qp->p_multixri_pool = multixri_pool;
3560
3561                 multixri_pool->xri_limit = count_per_hwq;
3562                 multixri_pool->rrb_next_hwqid = i;
3563
3564                 /* Deal with public free xri pool */
3565                 pbl_pool = &multixri_pool->pbl_pool;
3566                 spin_lock_init(&pbl_pool->lock);
3567                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3568                 spin_lock(&pbl_pool->lock);
3569                 INIT_LIST_HEAD(&pbl_pool->list);
3570                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3571                                          &qp->lpfc_io_buf_list_put, list) {
3572                         list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
3573                         qp->put_io_bufs--;
3574                         pbl_pool->count++;
3575                 }
3576                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3577                                 "1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
3578                                 pbl_pool->count, i);
3579                 spin_unlock(&pbl_pool->lock);
3580                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3581
3582                 /* Deal with private free xri pool */
3583                 pvt_pool = &multixri_pool->pvt_pool;
3584                 pvt_pool->high_watermark = multixri_pool->xri_limit / 2;
3585                 pvt_pool->low_watermark = XRI_BATCH;
3586                 spin_lock_init(&pvt_pool->lock);
3587                 spin_lock_irqsave(&pvt_pool->lock, iflag);
3588                 INIT_LIST_HEAD(&pvt_pool->list);
3589                 pvt_pool->count = 0;
3590                 spin_unlock_irqrestore(&pvt_pool->lock, iflag);
3591         }
3592 }
3593
3594 /**
3595  * lpfc_destroy_multixri_pools - destroy multi-XRI pools
3596  * @phba: pointer to lpfc hba data structure.
3597  *
3598  * This routine returns XRIs from public/private to lpfc_io_buf_list_put.
3599  **/
3600 static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
3601 {
3602         u32 i;
3603         u32 hwq_count;
3604         struct lpfc_io_buf *lpfc_ncmd;
3605         struct lpfc_io_buf *lpfc_ncmd_next;
3606         unsigned long iflag;
3607         struct lpfc_sli4_hdw_queue *qp;
3608         struct lpfc_multixri_pool *multixri_pool;
3609         struct lpfc_pbl_pool *pbl_pool;
3610         struct lpfc_pvt_pool *pvt_pool;
3611
3612         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3613                 lpfc_destroy_expedite_pool(phba);
3614
3615         if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
3616                 lpfc_sli_flush_io_rings(phba);
3617
3618         hwq_count = phba->cfg_hdw_queue;
3619
3620         for (i = 0; i < hwq_count; i++) {
3621                 qp = &phba->sli4_hba.hdwq[i];
3622                 multixri_pool = qp->p_multixri_pool;
3623                 if (!multixri_pool)
3624                         continue;
3625
3626                 qp->p_multixri_pool = NULL;
3627
3628                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3629
3630                 /* Deal with public free xri pool */
3631                 pbl_pool = &multixri_pool->pbl_pool;
3632                 spin_lock(&pbl_pool->lock);
3633
3634                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3635                                 "1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",
3636                                 pbl_pool->count, i);
3637
3638                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3639                                          &pbl_pool->list, list) {
3640                         list_move_tail(&lpfc_ncmd->list,
3641                                        &qp->lpfc_io_buf_list_put);
3642                         qp->put_io_bufs++;
3643                         pbl_pool->count--;
3644                 }
3645
3646                 INIT_LIST_HEAD(&pbl_pool->list);
3647                 pbl_pool->count = 0;
3648
3649                 spin_unlock(&pbl_pool->lock);
3650
3651                 /* Deal with private free xri pool */
3652                 pvt_pool = &multixri_pool->pvt_pool;
3653                 spin_lock(&pvt_pool->lock);
3654
3655                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3656                                 "1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",
3657                                 pvt_pool->count, i);
3658
3659                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3660                                          &pvt_pool->list, list) {
3661                         list_move_tail(&lpfc_ncmd->list,
3662                                        &qp->lpfc_io_buf_list_put);
3663                         qp->put_io_bufs++;
3664                         pvt_pool->count--;
3665                 }
3666
3667                 INIT_LIST_HEAD(&pvt_pool->list);
3668                 pvt_pool->count = 0;
3669
3670                 spin_unlock(&pvt_pool->lock);
3671                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3672
3673                 kfree(multixri_pool);
3674         }
3675 }
3676
3677 /**
3678  * lpfc_online - Initialize and bring a HBA online
3679  * @phba: pointer to lpfc hba data structure.
3680  *
3681  * This routine initializes the HBA and brings a HBA online. During this
3682  * process, the management interface is blocked to prevent user space access
3683  * to the HBA interfering with the driver initialization.
3684  *
3685  * Return codes
3686  *   0 - successful
3687  *   1 - failed
3688  **/
3689 int
3690 lpfc_online(struct lpfc_hba *phba)
3691 {
3692         struct lpfc_vport *vport;
3693         struct lpfc_vport **vports;
3694         int i, error = 0;
3695         bool vpis_cleared = false;
3696
3697         if (!phba)
3698                 return 0;
3699         vport = phba->pport;
3700
3701         if (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag))
3702                 return 0;
3703
3704         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3705                         "0458 Bring Adapter online\n");
3706
3707         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
3708
3709         if (phba->sli_rev == LPFC_SLI_REV4) {
3710                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
3711                         lpfc_unblock_mgmt_io(phba);
3712                         return 1;
3713                 }
3714                 spin_lock_irq(&phba->hbalock);
3715                 if (!phba->sli4_hba.max_cfg_param.vpi_used)
3716                         vpis_cleared = true;
3717                 spin_unlock_irq(&phba->hbalock);
3718
3719                 /* Reestablish the local initiator port.
3720                  * The offline process destroyed the previous lport.
3721                  */
3722                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
3723                                 !phba->nvmet_support) {
3724                         error = lpfc_nvme_create_localport(phba->pport);
3725                         if (error)
3726                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3727                                         "6132 NVME restore reg failed "
3728                                         "on nvmei error x%x\n", error);
3729                 }
3730         } else {
3731                 lpfc_sli_queue_init(phba);
3732                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
3733                         lpfc_unblock_mgmt_io(phba);
3734                         return 1;
3735                 }
3736         }
3737
3738         vports = lpfc_create_vport_work_array(phba);
3739         if (vports != NULL) {
3740                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3741                         clear_bit(FC_OFFLINE_MODE, &vports[i]->fc_flag);
3742                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3743                                 set_bit(FC_VPORT_NEEDS_REG_VPI,
3744                                         &vports[i]->fc_flag);
3745                         if (phba->sli_rev == LPFC_SLI_REV4) {
3746                                 set_bit(FC_VPORT_NEEDS_INIT_VPI,
3747                                         &vports[i]->fc_flag);
3748                                 if ((vpis_cleared) &&
3749                                     (vports[i]->port_type !=
3750                                         LPFC_PHYSICAL_PORT))
3751                                         vports[i]->vpi = 0;
3752                         }
3753                 }
3754         }
3755         lpfc_destroy_vport_work_array(phba, vports);
3756
3757         if (phba->cfg_xri_rebalancing)
3758                 lpfc_create_multixri_pools(phba);
3759
3760         lpfc_cpuhp_add(phba);
3761
3762         lpfc_unblock_mgmt_io(phba);
3763         return 0;
3764 }
3765
3766 /**
3767  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
3768  * @phba: pointer to lpfc hba data structure.
3769  *
3770  * This routine marks a HBA's management interface as not blocked. Once the
3771  * HBA's management interface is marked as not blocked, all the user space
3772  * access to the HBA, whether they are from sysfs interface or libdfc
3773  * interface will be allowed. The HBA is set to block the management interface
3774  * when the driver prepares the HBA interface for online or offline and then
3775  * set to unblock the management interface afterwards.
3776  **/
3777 void
3778 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
3779 {
3780         unsigned long iflag;
3781
3782         spin_lock_irqsave(&phba->hbalock, iflag);
3783         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
3784         spin_unlock_irqrestore(&phba->hbalock, iflag);
3785 }
3786
3787 /**
3788  * lpfc_offline_prep - Prepare a HBA to be brought offline
3789  * @phba: pointer to lpfc hba data structure.
3790  * @mbx_action: flag for mailbox shutdown action.
3791  *
3792  * This routine is invoked to prepare a HBA to be brought offline. It performs
3793  * unregistration login to all the nodes on all vports and flushes the mailbox
3794  * queue to make it ready to be brought offline.
3795  **/
3796 void
3797 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
3798 {
3799         struct lpfc_vport *vport = phba->pport;
3800         struct lpfc_nodelist  *ndlp, *next_ndlp;
3801         struct lpfc_vport **vports;
3802         struct Scsi_Host *shost;
3803         int i;
3804         int offline;
3805         bool hba_pci_err;
3806
3807         if (test_bit(FC_OFFLINE_MODE, &vport->fc_flag))
3808                 return;
3809
3810         lpfc_block_mgmt_io(phba, mbx_action);
3811
3812         lpfc_linkdown(phba);
3813
3814         offline =  pci_channel_offline(phba->pcidev);
3815         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
3816
3817         /* Issue an unreg_login to all nodes on all vports */
3818         vports = lpfc_create_vport_work_array(phba);
3819         if (vports != NULL) {
3820                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3821                         if (test_bit(FC_UNLOADING, &vports[i]->load_flag))
3822                                 continue;
3823                         shost = lpfc_shost_from_vport(vports[i]);
3824                         spin_lock_irq(shost->host_lock);
3825                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
3826                         spin_unlock_irq(shost->host_lock);
3827                         set_bit(FC_VPORT_NEEDS_REG_VPI, &vports[i]->fc_flag);
3828                         clear_bit(FC_VFI_REGISTERED, &vports[i]->fc_flag);
3829
3830                         list_for_each_entry_safe(ndlp, next_ndlp,
3831                                                  &vports[i]->fc_nodes,
3832                                                  nlp_listp) {
3833
3834                                 clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
3835                                 if (offline || hba_pci_err) {
3836                                         clear_bit(NLP_UNREG_INP,
3837                                                   &ndlp->nlp_flag);
3838                                         clear_bit(NLP_RPI_REGISTERED,
3839                                                   &ndlp->nlp_flag);
3840                                 }
3841
3842                                 if (ndlp->nlp_type & NLP_FABRIC) {
3843                                         lpfc_disc_state_machine(vports[i], ndlp,
3844                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
3845
3846                                         /* Don't remove the node unless the node
3847                                          * has been unregistered with the
3848                                          * transport, and we're not in recovery
3849                                          * before dev_loss_tmo triggered.
3850                                          * Otherwise, let dev_loss take care of
3851                                          * the node.
3852                                          */
3853                                         if (!test_bit(NLP_IN_RECOV_POST_DEV_LOSS,
3854                                                       &ndlp->save_flags) &&
3855                                             !(ndlp->fc4_xpt_flags &
3856                                               (NVME_XPT_REGD | SCSI_XPT_REGD)))
3857                                                 lpfc_disc_state_machine
3858                                                         (vports[i], ndlp,
3859                                                          NULL,
3860                                                          NLP_EVT_DEVICE_RM);
3861                                 }
3862                         }
3863                 }
3864         }
3865         lpfc_destroy_vport_work_array(phba, vports);
3866
3867         lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
3868
3869         if (phba->wq)
3870                 flush_workqueue(phba->wq);
3871 }
3872
3873 /**
3874  * lpfc_offline - Bring a HBA offline
3875  * @phba: pointer to lpfc hba data structure.
3876  *
3877  * This routine actually brings a HBA offline. It stops all the timers
3878  * associated with the HBA, brings down the SLI layer, and eventually
3879  * marks the HBA as in offline state for the upper layer protocol.
3880  **/
3881 void
3882 lpfc_offline(struct lpfc_hba *phba)
3883 {
3884         struct Scsi_Host  *shost;
3885         struct lpfc_vport **vports;
3886         int i;
3887
3888         if (test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))
3889                 return;
3890
3891         /* stop port and all timers associated with this hba */
3892         lpfc_stop_port(phba);
3893
3894         /* Tear down the local and target port registrations.  The
3895          * nvme transports need to cleanup.
3896          */
3897         lpfc_nvmet_destroy_targetport(phba);
3898         lpfc_nvme_destroy_localport(phba->pport);
3899
3900         vports = lpfc_create_vport_work_array(phba);
3901         if (vports != NULL)
3902                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3903                         lpfc_stop_vport_timers(vports[i]);
3904         lpfc_destroy_vport_work_array(phba, vports);
3905         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3906                         "0460 Bring Adapter offline\n");
3907         /* Bring down the SLI Layer and cleanup.  The HBA is offline
3908            now.  */
3909         lpfc_sli_hba_down(phba);
3910         spin_lock_irq(&phba->hbalock);
3911         phba->work_ha = 0;
3912         spin_unlock_irq(&phba->hbalock);
3913         vports = lpfc_create_vport_work_array(phba);
3914         if (vports != NULL)
3915                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3916                         shost = lpfc_shost_from_vport(vports[i]);
3917                         spin_lock_irq(shost->host_lock);
3918                         vports[i]->work_port_events = 0;
3919                         spin_unlock_irq(shost->host_lock);
3920                         set_bit(FC_OFFLINE_MODE, &vports[i]->fc_flag);
3921                 }
3922         lpfc_destroy_vport_work_array(phba, vports);
3923         /* If OFFLINE flag is clear (i.e. unloading), cpuhp removal is handled
3924          * in hba_unset
3925          */
3926         if (test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))
3927                 __lpfc_cpuhp_remove(phba);
3928
3929         if (phba->cfg_xri_rebalancing)
3930                 lpfc_destroy_multixri_pools(phba);
3931 }
3932
3933 /**
3934  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
3935  * @phba: pointer to lpfc hba data structure.
3936  *
3937  * This routine is to free all the SCSI buffers and IOCBs from the driver
3938  * list back to kernel. It is called from lpfc_pci_remove_one to free
3939  * the internal resources before the device is removed from the system.
3940  **/
3941 static void
3942 lpfc_scsi_free(struct lpfc_hba *phba)
3943 {
3944         struct lpfc_io_buf *sb, *sb_next;
3945
3946         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
3947                 return;
3948
3949         spin_lock_irq(&phba->hbalock);
3950
3951         /* Release all the lpfc_scsi_bufs maintained by this host. */
3952
3953         spin_lock(&phba->scsi_buf_list_put_lock);
3954         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
3955                                  list) {
3956                 list_del(&sb->list);
3957                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3958                               sb->dma_handle);
3959                 kfree(sb);
3960                 phba->total_scsi_bufs--;
3961         }
3962         spin_unlock(&phba->scsi_buf_list_put_lock);
3963
3964         spin_lock(&phba->scsi_buf_list_get_lock);
3965         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
3966                                  list) {
3967                 list_del(&sb->list);
3968                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3969                               sb->dma_handle);
3970                 kfree(sb);
3971                 phba->total_scsi_bufs--;
3972         }
3973         spin_unlock(&phba->scsi_buf_list_get_lock);
3974         spin_unlock_irq(&phba->hbalock);
3975 }
3976
3977 /**
3978  * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists
3979  * @phba: pointer to lpfc hba data structure.
3980  *
3981  * This routine is to free all the IO buffers and IOCBs from the driver
3982  * list back to kernel. It is called from lpfc_pci_remove_one to free
3983  * the internal resources before the device is removed from the system.
3984  **/
3985 void
3986 lpfc_io_free(struct lpfc_hba *phba)
3987 {
3988         struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
3989         struct lpfc_sli4_hdw_queue *qp;
3990         int idx;
3991
3992         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3993                 qp = &phba->sli4_hba.hdwq[idx];
3994                 /* Release all the lpfc_nvme_bufs maintained by this host. */
3995                 spin_lock(&qp->io_buf_list_put_lock);
3996                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3997                                          &qp->lpfc_io_buf_list_put,
3998                                          list) {
3999                         list_del(&lpfc_ncmd->list);
4000                         qp->put_io_bufs--;
4001                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4002                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4003                         if (phba->cfg_xpsgl && !phba->nvmet_support)
4004                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
4005                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
4006                         kfree(lpfc_ncmd);
4007                         qp->total_io_bufs--;
4008                 }
4009                 spin_unlock(&qp->io_buf_list_put_lock);
4010
4011                 spin_lock(&qp->io_buf_list_get_lock);
4012                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
4013                                          &qp->lpfc_io_buf_list_get,
4014                                          list) {
4015                         list_del(&lpfc_ncmd->list);
4016                         qp->get_io_bufs--;
4017                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4018                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4019                         if (phba->cfg_xpsgl && !phba->nvmet_support)
4020                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
4021                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
4022                         kfree(lpfc_ncmd);
4023                         qp->total_io_bufs--;
4024                 }
4025                 spin_unlock(&qp->io_buf_list_get_lock);
4026         }
4027 }
4028
4029 /**
4030  * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping
4031  * @phba: pointer to lpfc hba data structure.
4032  *
4033  * This routine first calculates the sizes of the current els and allocated
4034  * scsi sgl lists, and then goes through all sgls to updates the physical
4035  * XRIs assigned due to port function reset. During port initialization, the
4036  * current els and allocated scsi sgl lists are 0s.
4037  *
4038  * Return codes
4039  *   0 - successful (for now, it always returns 0)
4040  **/
4041 int
4042 lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)
4043 {
4044         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
4045         uint16_t i, lxri, xri_cnt, els_xri_cnt;
4046         LIST_HEAD(els_sgl_list);
4047         int rc;
4048
4049         /*
4050          * update on pci function's els xri-sgl list
4051          */
4052         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4053
4054         if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
4055                 /* els xri-sgl expanded */
4056                 xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
4057                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4058                                 "3157 ELS xri-sgl count increased from "
4059                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
4060                                 els_xri_cnt);
4061                 /* allocate the additional els sgls */
4062                 for (i = 0; i < xri_cnt; i++) {
4063                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
4064                                              GFP_KERNEL);
4065                         if (sglq_entry == NULL) {
4066                                 lpfc_printf_log(phba, KERN_ERR,
4067                                                 LOG_TRACE_EVENT,
4068                                                 "2562 Failure to allocate an "
4069                                                 "ELS sgl entry:%d\n", i);
4070                                 rc = -ENOMEM;
4071                                 goto out_free_mem;
4072                         }
4073                         sglq_entry->buff_type = GEN_BUFF_TYPE;
4074                         sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
4075                                                            &sglq_entry->phys);
4076                         if (sglq_entry->virt == NULL) {
4077                                 kfree(sglq_entry);
4078                                 lpfc_printf_log(phba, KERN_ERR,
4079                                                 LOG_TRACE_EVENT,
4080                                                 "2563 Failure to allocate an "
4081                                                 "ELS mbuf:%d\n", i);
4082                                 rc = -ENOMEM;
4083                                 goto out_free_mem;
4084                         }
4085                         sglq_entry->sgl = sglq_entry->virt;
4086                         memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
4087                         sglq_entry->state = SGL_FREED;
4088                         list_add_tail(&sglq_entry->list, &els_sgl_list);
4089                 }
4090                 spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
4091                 list_splice_init(&els_sgl_list,
4092                                  &phba->sli4_hba.lpfc_els_sgl_list);
4093                 spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
4094         } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
4095                 /* els xri-sgl shrinked */
4096                 xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
4097                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4098                                 "3158 ELS xri-sgl count decreased from "
4099                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
4100                                 els_xri_cnt);
4101                 spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
4102                 list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
4103                                  &els_sgl_list);
4104                 /* release extra els sgls from list */
4105                 for (i = 0; i < xri_cnt; i++) {
4106                         list_remove_head(&els_sgl_list,
4107                                          sglq_entry, struct lpfc_sglq, list);
4108                         if (sglq_entry) {
4109                                 __lpfc_mbuf_free(phba, sglq_entry->virt,
4110                                                  sglq_entry->phys);
4111                                 kfree(sglq_entry);
4112                         }
4113                 }
4114                 list_splice_init(&els_sgl_list,
4115                                  &phba->sli4_hba.lpfc_els_sgl_list);
4116                 spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
4117         } else
4118                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4119                                 "3163 ELS xri-sgl count unchanged: %d\n",
4120                                 els_xri_cnt);
4121         phba->sli4_hba.els_xri_cnt = els_xri_cnt;
4122
4123         /* update xris to els sgls on the list */
4124         sglq_entry = NULL;
4125         sglq_entry_next = NULL;
4126         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
4127                                  &phba->sli4_hba.lpfc_els_sgl_list, list) {
4128                 lxri = lpfc_sli4_next_xritag(phba);
4129                 if (lxri == NO_XRI) {
4130                         lpfc_printf_log(phba, KERN_ERR,
4131                                         LOG_TRACE_EVENT,
4132                                         "2400 Failed to allocate xri for "
4133                                         "ELS sgl\n");
4134                         rc = -ENOMEM;
4135                         goto out_free_mem;
4136                 }
4137                 sglq_entry->sli4_lxritag = lxri;
4138                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4139         }
4140         return 0;
4141
4142 out_free_mem:
4143         lpfc_free_els_sgl_list(phba);
4144         return rc;
4145 }
4146
4147 /**
4148  * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping
4149  * @phba: pointer to lpfc hba data structure.
4150  *
4151  * This routine first calculates the sizes of the current els and allocated
4152  * scsi sgl lists, and then goes through all sgls to updates the physical
4153  * XRIs assigned due to port function reset. During port initialization, the
4154  * current els and allocated scsi sgl lists are 0s.
4155  *
4156  * Return codes
4157  *   0 - successful (for now, it always returns 0)
4158  **/
4159 int
4160 lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)
4161 {
4162         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
4163         uint16_t i, lxri, xri_cnt, els_xri_cnt;
4164         uint16_t nvmet_xri_cnt;
4165         LIST_HEAD(nvmet_sgl_list);
4166         int rc;
4167
4168         /*
4169          * update on pci function's nvmet xri-sgl list
4170          */
4171         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4172
4173         /* For NVMET, ALL remaining XRIs are dedicated for IO processing */
4174         nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4175         if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {
4176                 /* els xri-sgl expanded */
4177                 xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
4178                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4179                                 "6302 NVMET xri-sgl cnt grew from %d to %d\n",
4180                                 phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);
4181                 /* allocate the additional nvmet sgls */
4182                 for (i = 0; i < xri_cnt; i++) {
4183                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
4184                                              GFP_KERNEL);
4185                         if (sglq_entry == NULL) {
4186                                 lpfc_printf_log(phba, KERN_ERR,
4187                                                 LOG_TRACE_EVENT,
4188                                                 "6303 Failure to allocate an "
4189                                                 "NVMET sgl entry:%d\n", i);
4190                                 rc = -ENOMEM;
4191                                 goto out_free_mem;
4192                         }
4193                         sglq_entry->buff_type = NVMET_BUFF_TYPE;
4194                         sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
4195                                                            &sglq_entry->phys);
4196                         if (sglq_entry->virt == NULL) {
4197                                 kfree(sglq_entry);
4198                                 lpfc_printf_log(phba, KERN_ERR,
4199                                                 LOG_TRACE_EVENT,
4200                                                 "6304 Failure to allocate an "
4201                                                 "NVMET buf:%d\n", i);
4202                                 rc = -ENOMEM;
4203                                 goto out_free_mem;
4204                         }
4205                         sglq_entry->sgl = sglq_entry->virt;
4206                         memset(sglq_entry->sgl, 0,
4207                                phba->cfg_sg_dma_buf_size);
4208                         sglq_entry->state = SGL_FREED;
4209                         list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
4210                 }
4211                 spin_lock_irq(&phba->hbalock);
4212                 spin_lock(&phba->sli4_hba.sgl_list_lock);
4213                 list_splice_init(&nvmet_sgl_list,
4214                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
4215                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
4216                 spin_unlock_irq(&phba->hbalock);
4217         } else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {
4218                 /* nvmet xri-sgl shrunk */
4219                 xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
4220                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4221                                 "6305 NVMET xri-sgl count decreased from "
4222                                 "%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
4223                                 nvmet_xri_cnt);
4224                 spin_lock_irq(&phba->hbalock);
4225                 spin_lock(&phba->sli4_hba.sgl_list_lock);
4226                 list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
4227                                  &nvmet_sgl_list);
4228                 /* release extra nvmet sgls from list */
4229                 for (i = 0; i < xri_cnt; i++) {
4230                         list_remove_head(&nvmet_sgl_list,
4231                                          sglq_entry, struct lpfc_sglq, list);
4232                         if (sglq_entry) {
4233                                 lpfc_nvmet_buf_free(phba, sglq_entry->virt,
4234                                                     sglq_entry->phys);
4235                                 kfree(sglq_entry);
4236                         }
4237                 }
4238                 list_splice_init(&nvmet_sgl_list,
4239                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
4240                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
4241                 spin_unlock_irq(&phba->hbalock);
4242         } else
4243                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4244                                 "6306 NVMET xri-sgl count unchanged: %d\n",
4245                                 nvmet_xri_cnt);
4246         phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
4247
4248         /* update xris to nvmet sgls on the list */
4249         sglq_entry = NULL;
4250         sglq_entry_next = NULL;
4251         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
4252                                  &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {
4253                 lxri = lpfc_sli4_next_xritag(phba);
4254                 if (lxri == NO_XRI) {
4255                         lpfc_printf_log(phba, KERN_ERR,
4256                                         LOG_TRACE_EVENT,
4257                                         "6307 Failed to allocate xri for "
4258                                         "NVMET sgl\n");
4259                         rc = -ENOMEM;
4260                         goto out_free_mem;
4261                 }
4262                 sglq_entry->sli4_lxritag = lxri;
4263                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4264         }
4265         return 0;
4266
4267 out_free_mem:
4268         lpfc_free_nvmet_sgl_list(phba);
4269         return rc;
4270 }
4271
4272 int
4273 lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)
4274 {
4275         LIST_HEAD(blist);
4276         struct lpfc_sli4_hdw_queue *qp;
4277         struct lpfc_io_buf *lpfc_cmd;
4278         struct lpfc_io_buf *iobufp, *prev_iobufp;
4279         int idx, cnt, xri, inserted;
4280
4281         cnt = 0;
4282         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4283                 qp = &phba->sli4_hba.hdwq[idx];
4284                 spin_lock_irq(&qp->io_buf_list_get_lock);
4285                 spin_lock(&qp->io_buf_list_put_lock);
4286
4287                 /* Take everything off the get and put lists */
4288                 list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
4289                 list_splice(&qp->lpfc_io_buf_list_put, &blist);
4290                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
4291                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
4292                 cnt += qp->get_io_bufs + qp->put_io_bufs;
4293                 qp->get_io_bufs = 0;
4294                 qp->put_io_bufs = 0;
4295                 qp->total_io_bufs = 0;
4296                 spin_unlock(&qp->io_buf_list_put_lock);
4297                 spin_unlock_irq(&qp->io_buf_list_get_lock);
4298         }
4299
4300         /*
4301          * Take IO buffers off blist and put on cbuf sorted by XRI.
4302          * This is because POST_SGL takes a sequential range of XRIs
4303          * to post to the firmware.
4304          */
4305         for (idx = 0; idx < cnt; idx++) {
4306                 list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);
4307                 if (!lpfc_cmd)
4308                         return cnt;
4309                 if (idx == 0) {
4310                         list_add_tail(&lpfc_cmd->list, cbuf);
4311                         continue;
4312                 }
4313                 xri = lpfc_cmd->cur_iocbq.sli4_xritag;
4314                 inserted = 0;
4315                 prev_iobufp = NULL;
4316                 list_for_each_entry(iobufp, cbuf, list) {
4317                         if (xri < iobufp->cur_iocbq.sli4_xritag) {
4318                                 if (prev_iobufp)
4319                                         list_add(&lpfc_cmd->list,
4320                                                  &prev_iobufp->list);
4321                                 else
4322                                         list_add(&lpfc_cmd->list, cbuf);
4323                                 inserted = 1;
4324                                 break;
4325                         }
4326                         prev_iobufp = iobufp;
4327                 }
4328                 if (!inserted)
4329                         list_add_tail(&lpfc_cmd->list, cbuf);
4330         }
4331         return cnt;
4332 }
4333
4334 int
4335 lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
4336 {
4337         struct lpfc_sli4_hdw_queue *qp;
4338         struct lpfc_io_buf *lpfc_cmd;
4339         int idx, cnt;
4340         unsigned long iflags;
4341
4342         qp = phba->sli4_hba.hdwq;
4343         cnt = 0;
4344         while (!list_empty(cbuf)) {
4345                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4346                         list_remove_head(cbuf, lpfc_cmd,
4347                                          struct lpfc_io_buf, list);
4348                         if (!lpfc_cmd)
4349                                 return cnt;
4350                         cnt++;
4351                         qp = &phba->sli4_hba.hdwq[idx];
4352                         lpfc_cmd->hdwq_no = idx;
4353                         lpfc_cmd->hdwq = qp;
4354                         lpfc_cmd->cur_iocbq.cmd_cmpl = NULL;
4355                         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflags);
4356                         list_add_tail(&lpfc_cmd->list,
4357                                       &qp->lpfc_io_buf_list_put);
4358                         qp->put_io_bufs++;
4359                         qp->total_io_bufs++;
4360                         spin_unlock_irqrestore(&qp->io_buf_list_put_lock,
4361                                                iflags);
4362                 }
4363         }
4364         return cnt;
4365 }
4366
4367 /**
4368  * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping
4369  * @phba: pointer to lpfc hba data structure.
4370  *
4371  * This routine first calculates the sizes of the current els and allocated
4372  * scsi sgl lists, and then goes through all sgls to updates the physical
4373  * XRIs assigned due to port function reset. During port initialization, the
4374  * current els and allocated scsi sgl lists are 0s.
4375  *
4376  * Return codes
4377  *   0 - successful (for now, it always returns 0)
4378  **/
4379 int
4380 lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)
4381 {
4382         struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
4383         uint16_t i, lxri, els_xri_cnt;
4384         uint16_t io_xri_cnt, io_xri_max;
4385         LIST_HEAD(io_sgl_list);
4386         int rc, cnt;
4387
4388         /*
4389          * update on pci function's allocated nvme xri-sgl list
4390          */
4391
4392         /* maximum number of xris available for nvme buffers */
4393         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4394         io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4395         phba->sli4_hba.io_xri_max = io_xri_max;
4396
4397         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4398                         "6074 Current allocated XRI sgl count:%d, "
4399                         "maximum XRI count:%d els_xri_cnt:%d\n\n",
4400                         phba->sli4_hba.io_xri_cnt,
4401                         phba->sli4_hba.io_xri_max,
4402                         els_xri_cnt);
4403
4404         cnt = lpfc_io_buf_flush(phba, &io_sgl_list);
4405
4406         if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {
4407                 /* max nvme xri shrunk below the allocated nvme buffers */
4408                 io_xri_cnt = phba->sli4_hba.io_xri_cnt -
4409                                         phba->sli4_hba.io_xri_max;
4410                 /* release the extra allocated nvme buffers */
4411                 for (i = 0; i < io_xri_cnt; i++) {
4412                         list_remove_head(&io_sgl_list, lpfc_ncmd,
4413                                          struct lpfc_io_buf, list);
4414                         if (lpfc_ncmd) {
4415                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4416                                               lpfc_ncmd->data,
4417                                               lpfc_ncmd->dma_handle);
4418                                 kfree(lpfc_ncmd);
4419                         }
4420                 }
4421                 phba->sli4_hba.io_xri_cnt -= io_xri_cnt;
4422         }
4423
4424         /* update xris associated to remaining allocated nvme buffers */
4425         lpfc_ncmd = NULL;
4426         lpfc_ncmd_next = NULL;
4427         phba->sli4_hba.io_xri_cnt = cnt;
4428         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
4429                                  &io_sgl_list, list) {
4430                 lxri = lpfc_sli4_next_xritag(phba);
4431                 if (lxri == NO_XRI) {
4432                         lpfc_printf_log(phba, KERN_ERR,
4433                                         LOG_TRACE_EVENT,
4434                                         "6075 Failed to allocate xri for "
4435                                         "nvme buffer\n");
4436                         rc = -ENOMEM;
4437                         goto out_free_mem;
4438                 }
4439                 lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;
4440                 lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4441         }
4442         cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);
4443         return 0;
4444
4445 out_free_mem:
4446         lpfc_io_free(phba);
4447         return rc;
4448 }
4449
4450 /**
4451  * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec
4452  * @phba: Pointer to lpfc hba data structure.
4453  * @num_to_alloc: The requested number of buffers to allocate.
4454  *
4455  * This routine allocates nvme buffers for device with SLI-4 interface spec,
4456  * the nvme buffer contains all the necessary information needed to initiate
4457  * an I/O. After allocating up to @num_to_allocate IO buffers and put
4458  * them on a list, it post them to the port by using SGL block post.
4459  *
4460  * Return codes:
4461  *   int - number of IO buffers that were allocated and posted.
4462  *   0 = failure, less than num_to_alloc is a partial failure.
4463  **/
4464 int
4465 lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
4466 {
4467         struct lpfc_io_buf *lpfc_ncmd;
4468         struct lpfc_iocbq *pwqeq;
4469         uint16_t iotag, lxri = 0;
4470         int bcnt, num_posted;
4471         LIST_HEAD(prep_nblist);
4472         LIST_HEAD(post_nblist);
4473         LIST_HEAD(nvme_nblist);
4474
4475         phba->sli4_hba.io_xri_cnt = 0;
4476         for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
4477                 lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);
4478                 if (!lpfc_ncmd)
4479                         break;
4480                 /*
4481                  * Get memory from the pci pool to map the virt space to
4482                  * pci bus space for an I/O. The DMA buffer includes the
4483                  * number of SGE's necessary to support the sg_tablesize.
4484                  */
4485                 lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
4486                                                   GFP_KERNEL,
4487                                                   &lpfc_ncmd->dma_handle);
4488                 if (!lpfc_ncmd->data) {
4489                         kfree(lpfc_ncmd);
4490                         break;
4491                 }
4492
4493                 if (phba->cfg_xpsgl && !phba->nvmet_support) {
4494                         INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
4495                 } else {
4496                         /*
4497                          * 4K Page alignment is CRITICAL to BlockGuard, double
4498                          * check to be sure.
4499                          */
4500                         if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
4501                             (((unsigned long)(lpfc_ncmd->data) &
4502                             (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
4503                                 lpfc_printf_log(phba, KERN_ERR,
4504                                                 LOG_TRACE_EVENT,
4505                                                 "3369 Memory alignment err: "
4506                                                 "addr=%lx\n",
4507                                                 (unsigned long)lpfc_ncmd->data);
4508                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4509                                               lpfc_ncmd->data,
4510                                               lpfc_ncmd->dma_handle);
4511                                 kfree(lpfc_ncmd);
4512                                 break;
4513                         }
4514                 }
4515
4516                 INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);
4517
4518                 lxri = lpfc_sli4_next_xritag(phba);
4519                 if (lxri == NO_XRI) {
4520                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4521                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4522                         kfree(lpfc_ncmd);
4523                         break;
4524                 }
4525                 pwqeq = &lpfc_ncmd->cur_iocbq;
4526
4527                 /* Allocate iotag for lpfc_ncmd->cur_iocbq. */
4528                 iotag = lpfc_sli_next_iotag(phba, pwqeq);
4529                 if (iotag == 0) {
4530                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4531                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4532                         kfree(lpfc_ncmd);
4533                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4534                                         "6121 Failed to allocate IOTAG for"
4535                                         " XRI:0x%x\n", lxri);
4536                         lpfc_sli4_free_xri(phba, lxri);
4537                         break;
4538                 }
4539                 pwqeq->sli4_lxritag = lxri;
4540                 pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4541
4542                 /* Initialize local short-hand pointers. */
4543                 lpfc_ncmd->dma_sgl = lpfc_ncmd->data;
4544                 lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;
4545                 lpfc_ncmd->cur_iocbq.io_buf = lpfc_ncmd;
4546                 spin_lock_init(&lpfc_ncmd->buf_lock);
4547
4548                 /* add the nvme buffer to a post list */
4549                 list_add_tail(&lpfc_ncmd->list, &post_nblist);
4550                 phba->sli4_hba.io_xri_cnt++;
4551         }
4552         lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
4553                         "6114 Allocate %d out of %d requested new NVME "
4554                         "buffers of size x%zu bytes\n", bcnt, num_to_alloc,
4555                         sizeof(*lpfc_ncmd));
4556
4557
4558         /* post the list of nvme buffer sgls to port if available */
4559         if (!list_empty(&post_nblist))
4560                 num_posted = lpfc_sli4_post_io_sgl_list(
4561                                 phba, &post_nblist, bcnt);
4562         else
4563                 num_posted = 0;
4564
4565         return num_posted;
4566 }
4567
4568 static uint64_t
4569 lpfc_get_wwpn(struct lpfc_hba *phba)
4570 {
4571         uint64_t wwn;
4572         int rc;
4573         LPFC_MBOXQ_t *mboxq;
4574         MAILBOX_t *mb;
4575
4576         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4577                                                 GFP_KERNEL);
4578         if (!mboxq)
4579                 return (uint64_t)-1;
4580
4581         /* First get WWN of HBA instance */
4582         lpfc_read_nv(phba, mboxq);
4583         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4584         if (rc != MBX_SUCCESS) {
4585                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4586                                 "6019 Mailbox failed , mbxCmd x%x "
4587                                 "READ_NV, mbxStatus x%x\n",
4588                                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
4589                                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
4590                 mempool_free(mboxq, phba->mbox_mem_pool);
4591                 return (uint64_t) -1;
4592         }
4593         mb = &mboxq->u.mb;
4594         memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));
4595         /* wwn is WWPN of HBA instance */
4596         mempool_free(mboxq, phba->mbox_mem_pool);
4597         if (phba->sli_rev == LPFC_SLI_REV4)
4598                 return be64_to_cpu(wwn);
4599         else
4600                 return rol64(wwn, 32);
4601 }
4602
4603 static unsigned short lpfc_get_sg_tablesize(struct lpfc_hba *phba)
4604 {
4605         if (phba->sli_rev == LPFC_SLI_REV4)
4606                 if (phba->cfg_xpsgl && !phba->nvmet_support)
4607                         return LPFC_MAX_SG_TABLESIZE;
4608                 else
4609                         return phba->cfg_scsi_seg_cnt;
4610         else
4611                 return phba->cfg_sg_seg_cnt;
4612 }
4613
4614 /**
4615  * lpfc_vmid_res_alloc - Allocates resources for VMID
4616  * @phba: pointer to lpfc hba data structure.
4617  * @vport: pointer to vport data structure
4618  *
4619  * This routine allocated the resources needed for the VMID.
4620  *
4621  * Return codes
4622  *      0 on Success
4623  *      Non-0 on Failure
4624  */
4625 static int
4626 lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport)
4627 {
4628         /* VMID feature is supported only on SLI4 */
4629         if (phba->sli_rev == LPFC_SLI_REV3) {
4630                 phba->cfg_vmid_app_header = 0;
4631                 phba->cfg_vmid_priority_tagging = 0;
4632         }
4633
4634         if (lpfc_is_vmid_enabled(phba)) {
4635                 vport->vmid =
4636                     kcalloc(phba->cfg_max_vmid, sizeof(struct lpfc_vmid),
4637                             GFP_KERNEL);
4638                 if (!vport->vmid)
4639                         return -ENOMEM;
4640
4641                 rwlock_init(&vport->vmid_lock);
4642
4643                 /* Set the VMID parameters for the vport */
4644                 vport->vmid_priority_tagging = phba->cfg_vmid_priority_tagging;
4645                 vport->vmid_inactivity_timeout =
4646                     phba->cfg_vmid_inactivity_timeout;
4647                 vport->max_vmid = phba->cfg_max_vmid;
4648                 vport->cur_vmid_cnt = 0;
4649
4650                 vport->vmid_priority_range = bitmap_zalloc
4651                         (LPFC_VMID_MAX_PRIORITY_RANGE, GFP_KERNEL);
4652
4653                 if (!vport->vmid_priority_range) {
4654                         kfree(vport->vmid);
4655                         return -ENOMEM;
4656                 }
4657
4658                 hash_init(vport->hash_table);
4659         }
4660         return 0;
4661 }
4662
4663 /**
4664  * lpfc_create_port - Create an FC port
4665  * @phba: pointer to lpfc hba data structure.
4666  * @instance: a unique integer ID to this FC port.
4667  * @dev: pointer to the device data structure.
4668  *
4669  * This routine creates a FC port for the upper layer protocol. The FC port
4670  * can be created on top of either a physical port or a virtual port provided
4671  * by the HBA. This routine also allocates a SCSI host data structure (shost)
4672  * and associates the FC port created before adding the shost into the SCSI
4673  * layer.
4674  *
4675  * Return codes
4676  *   @vport - pointer to the virtual N_Port data structure.
4677  *   NULL - port create failed.
4678  **/
4679 struct lpfc_vport *
4680 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
4681 {
4682         struct lpfc_vport *vport;
4683         struct Scsi_Host  *shost = NULL;
4684         struct scsi_host_template *template;
4685         int error = 0;
4686         int i;
4687         uint64_t wwn;
4688         bool use_no_reset_hba = false;
4689         int rc;
4690         u8 if_type;
4691
4692         if (lpfc_no_hba_reset_cnt) {
4693                 if (phba->sli_rev < LPFC_SLI_REV4 &&
4694                     dev == &phba->pcidev->dev) {
4695                         /* Reset the port first */
4696                         lpfc_sli_brdrestart(phba);
4697                         rc = lpfc_sli_chipset_init(phba);
4698                         if (rc)
4699                                 return NULL;
4700                 }
4701                 wwn = lpfc_get_wwpn(phba);
4702         }
4703
4704         for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {
4705                 if (wwn == lpfc_no_hba_reset[i]) {
4706                         lpfc_printf_log(phba, KERN_ERR,
4707                                         LOG_TRACE_EVENT,
4708                                         "6020 Setting use_no_reset port=%llx\n",
4709                                         wwn);
4710                         use_no_reset_hba = true;
4711                         break;
4712                 }
4713         }
4714
4715         /* Seed template for SCSI host registration */
4716         if (dev == &phba->pcidev->dev) {
4717                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
4718                         /* Seed physical port template */
4719                         template = &lpfc_template;
4720
4721                         if (use_no_reset_hba)
4722                                 /* template is for a no reset SCSI Host */
4723                                 template->eh_host_reset_handler = NULL;
4724
4725                         /* Seed updated value of sg_tablesize */
4726                         template->sg_tablesize = lpfc_get_sg_tablesize(phba);
4727                 } else {
4728                         /* NVMET is for physical port only */
4729                         template = &lpfc_template_nvme;
4730                 }
4731         } else {
4732                 /* Seed vport template */
4733                 template = &lpfc_vport_template;
4734
4735                 /* Seed updated value of sg_tablesize */
4736                 template->sg_tablesize = lpfc_get_sg_tablesize(phba);
4737         }
4738
4739         shost = scsi_host_alloc(template, sizeof(struct lpfc_vport));
4740         if (!shost)
4741                 goto out;
4742
4743         vport = (struct lpfc_vport *) shost->hostdata;
4744         vport->phba = phba;
4745         set_bit(FC_LOADING, &vport->load_flag);
4746         set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
4747         vport->fc_rscn_flush = 0;
4748         atomic_set(&vport->fc_plogi_cnt, 0);
4749         atomic_set(&vport->fc_adisc_cnt, 0);
4750         atomic_set(&vport->fc_reglogin_cnt, 0);
4751         atomic_set(&vport->fc_prli_cnt, 0);
4752         atomic_set(&vport->fc_unmap_cnt, 0);
4753         atomic_set(&vport->fc_map_cnt, 0);
4754         atomic_set(&vport->fc_npr_cnt, 0);
4755         atomic_set(&vport->fc_unused_cnt, 0);
4756         lpfc_get_vport_cfgparam(vport);
4757
4758         /* Adjust value in vport */
4759         vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;
4760
4761         shost->unique_id = instance;
4762         shost->max_id = LPFC_MAX_TARGET;
4763         shost->max_lun = vport->cfg_max_luns;
4764         shost->this_id = -1;
4765
4766         /* Set max_cmd_len applicable to ASIC support */
4767         if (phba->sli_rev == LPFC_SLI_REV4) {
4768                 if_type = bf_get(lpfc_sli_intf_if_type,
4769                                  &phba->sli4_hba.sli_intf);
4770                 switch (if_type) {
4771                 case LPFC_SLI_INTF_IF_TYPE_2:
4772                         fallthrough;
4773                 case LPFC_SLI_INTF_IF_TYPE_6:
4774                         shost->max_cmd_len = LPFC_FCP_CDB_LEN_32;
4775                         break;
4776                 default:
4777                         shost->max_cmd_len = LPFC_FCP_CDB_LEN;
4778                         break;
4779                 }
4780         } else {
4781                 shost->max_cmd_len = LPFC_FCP_CDB_LEN;
4782         }
4783
4784         if (phba->sli_rev == LPFC_SLI_REV4) {
4785                 if (!phba->cfg_fcp_mq_threshold ||
4786                     phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)
4787                         phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;
4788
4789                 shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),
4790                                             phba->cfg_fcp_mq_threshold);
4791
4792                 shost->dma_boundary =
4793                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
4794         } else
4795                 /* SLI-3 has a limited number of hardware queues (3),
4796                  * thus there is only one for FCP processing.
4797                  */
4798                 shost->nr_hw_queues = 1;
4799
4800         /*
4801          * Set initial can_queue value since 0 is no longer supported and
4802          * scsi_add_host will fail. This will be adjusted later based on the
4803          * max xri value determined in hba setup.
4804          */
4805         shost->can_queue = phba->cfg_hba_queue_depth - 10;
4806         if (dev != &phba->pcidev->dev) {
4807                 shost->transportt = lpfc_vport_transport_template;
4808                 vport->port_type = LPFC_NPIV_PORT;
4809         } else {
4810                 shost->transportt = lpfc_transport_template;
4811                 vport->port_type = LPFC_PHYSICAL_PORT;
4812         }
4813
4814         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
4815                         "9081 CreatePort TMPLATE type %x TBLsize %d "
4816                         "SEGcnt %d/%d\n",
4817                         vport->port_type, shost->sg_tablesize,
4818                         phba->cfg_scsi_seg_cnt, phba->cfg_sg_seg_cnt);
4819
4820         /* Allocate the resources for VMID */
4821         rc = lpfc_vmid_res_alloc(phba, vport);
4822
4823         if (rc)
4824                 goto out_put_shost;
4825
4826         /* Initialize all internally managed lists. */
4827         INIT_LIST_HEAD(&vport->fc_nodes);
4828         spin_lock_init(&vport->fc_nodes_list_lock);
4829         INIT_LIST_HEAD(&vport->rcv_buffer_list);
4830         spin_lock_init(&vport->work_port_lock);
4831
4832         timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);
4833
4834         timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);
4835
4836         timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);
4837
4838         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
4839                 lpfc_setup_bg(phba, shost);
4840
4841         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
4842         if (error)
4843                 goto out_free_vmid;
4844
4845         spin_lock_irq(&phba->port_list_lock);
4846         list_add_tail(&vport->listentry, &phba->port_list);
4847         spin_unlock_irq(&phba->port_list_lock);
4848         return vport;
4849
4850 out_free_vmid:
4851         kfree(vport->vmid);
4852         bitmap_free(vport->vmid_priority_range);
4853 out_put_shost:
4854         scsi_host_put(shost);
4855 out:
4856         return NULL;
4857 }
4858
4859 /**
4860  * destroy_port -  destroy an FC port
4861  * @vport: pointer to an lpfc virtual N_Port data structure.
4862  *
4863  * This routine destroys a FC port from the upper layer protocol. All the
4864  * resources associated with the port are released.
4865  **/
4866 void
4867 destroy_port(struct lpfc_vport *vport)
4868 {
4869         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4870         struct lpfc_hba  *phba = vport->phba;
4871
4872         lpfc_debugfs_terminate(vport);
4873         fc_remove_host(shost);
4874         scsi_remove_host(shost);
4875
4876         spin_lock_irq(&phba->port_list_lock);
4877         list_del_init(&vport->listentry);
4878         spin_unlock_irq(&phba->port_list_lock);
4879
4880         lpfc_cleanup(vport);
4881         return;
4882 }
4883
4884 /**
4885  * lpfc_get_instance - Get a unique integer ID
4886  *
4887  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
4888  * uses the kernel idr facility to perform the task.
4889  *
4890  * Return codes:
4891  *   instance - a unique integer ID allocated as the new instance.
4892  *   -1 - lpfc get instance failed.
4893  **/
4894 int
4895 lpfc_get_instance(void)
4896 {
4897         int ret;
4898
4899         ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
4900         return ret < 0 ? -1 : ret;
4901 }
4902
4903 /**
4904  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
4905  * @shost: pointer to SCSI host data structure.
4906  * @time: elapsed time of the scan in jiffies.
4907  *
4908  * This routine is called by the SCSI layer with a SCSI host to determine
4909  * whether the scan host is finished.
4910  *
4911  * Note: there is no scan_start function as adapter initialization will have
4912  * asynchronously kicked off the link initialization.
4913  *
4914  * Return codes
4915  *   0 - SCSI host scan is not over yet.
4916  *   1 - SCSI host scan is over.
4917  **/
4918 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
4919 {
4920         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4921         struct lpfc_hba   *phba = vport->phba;
4922         int stat = 0;
4923
4924         spin_lock_irq(shost->host_lock);
4925
4926         if (test_bit(FC_UNLOADING, &vport->load_flag)) {
4927                 stat = 1;
4928                 goto finished;
4929         }
4930         if (time >= secs_to_jiffies(30)) {
4931                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4932                                 "0461 Scanning longer than 30 "
4933                                 "seconds.  Continuing initialization\n");
4934                 stat = 1;
4935                 goto finished;
4936         }
4937         if (time >= secs_to_jiffies(15) &&
4938             phba->link_state <= LPFC_LINK_DOWN) {
4939                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4940                                 "0465 Link down longer than 15 "
4941                                 "seconds.  Continuing initialization\n");
4942                 stat = 1;
4943                 goto finished;
4944         }
4945
4946         if (vport->port_state != LPFC_VPORT_READY)
4947                 goto finished;
4948         if (vport->num_disc_nodes || vport->fc_prli_sent)
4949                 goto finished;
4950         if (!atomic_read(&vport->fc_map_cnt) &&
4951             time < secs_to_jiffies(2))
4952                 goto finished;
4953         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
4954                 goto finished;
4955
4956         stat = 1;
4957
4958 finished:
4959         spin_unlock_irq(shost->host_lock);
4960         return stat;
4961 }
4962
4963 static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)
4964 {
4965         struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4966         struct lpfc_hba   *phba = vport->phba;
4967
4968         fc_host_supported_speeds(shost) = 0;
4969         /*
4970          * Avoid reporting supported link speed for FCoE as it can't be
4971          * controlled via FCoE.
4972          */
4973         if (test_bit(HBA_FCOE_MODE, &phba->hba_flag))
4974                 return;
4975
4976         if (phba->lmt & LMT_256Gb)
4977                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_256GBIT;
4978         if (phba->lmt & LMT_128Gb)
4979                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;
4980         if (phba->lmt & LMT_64Gb)
4981                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;
4982         if (phba->lmt & LMT_32Gb)
4983                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
4984         if (phba->lmt & LMT_16Gb)
4985                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
4986         if (phba->lmt & LMT_10Gb)
4987                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
4988         if (phba->lmt & LMT_8Gb)
4989                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
4990         if (phba->lmt & LMT_4Gb)
4991                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
4992         if (phba->lmt & LMT_2Gb)
4993                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
4994         if (phba->lmt & LMT_1Gb)
4995                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
4996 }
4997
4998 /**
4999  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
5000  * @shost: pointer to SCSI host data structure.
5001  *
5002  * This routine initializes a given SCSI host attributes on a FC port. The
5003  * SCSI host can be either on top of a physical port or a virtual port.
5004  **/
5005 void lpfc_host_attrib_init(struct Scsi_Host *shost)
5006 {
5007         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5008         struct lpfc_hba   *phba = vport->phba;
5009         /*
5010          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
5011          */
5012
5013         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
5014         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
5015         fc_host_supported_classes(shost) = FC_COS_CLASS3;
5016
5017         memset(fc_host_supported_fc4s(shost), 0,
5018                sizeof(fc_host_supported_fc4s(shost)));
5019         fc_host_supported_fc4s(shost)[2] = 1;
5020         fc_host_supported_fc4s(shost)[7] = 1;
5021
5022         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
5023                                  sizeof fc_host_symbolic_name(shost));
5024
5025         lpfc_host_supported_speeds_set(shost);
5026
5027         fc_host_maxframe_size(shost) =
5028                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
5029                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
5030
5031         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
5032
5033         /* This value is also unchanging */
5034         memset(fc_host_active_fc4s(shost), 0,
5035                sizeof(fc_host_active_fc4s(shost)));
5036         fc_host_active_fc4s(shost)[2] = 1;
5037         fc_host_active_fc4s(shost)[7] = 1;
5038
5039         fc_host_max_npiv_vports(shost) = phba->max_vpi;
5040         clear_bit(FC_LOADING, &vport->load_flag);
5041 }
5042
5043 /**
5044  * lpfc_stop_port_s3 - Stop SLI3 device port
5045  * @phba: pointer to lpfc hba data structure.
5046  *
5047  * This routine is invoked to stop an SLI3 device port, it stops the device
5048  * from generating interrupts and stops the device driver's timers for the
5049  * device.
5050  **/
5051 static void
5052 lpfc_stop_port_s3(struct lpfc_hba *phba)
5053 {
5054         /* Clear all interrupt enable conditions */
5055         writel(0, phba->HCregaddr);
5056         readl(phba->HCregaddr); /* flush */
5057         /* Clear all pending interrupts */
5058         writel(0xffffffff, phba->HAregaddr);
5059         readl(phba->HAregaddr); /* flush */
5060
5061         /* Reset some HBA SLI setup states */
5062         lpfc_stop_hba_timers(phba);
5063         phba->pport->work_port_events = 0;
5064 }
5065
5066 /**
5067  * lpfc_stop_port_s4 - Stop SLI4 device port
5068  * @phba: pointer to lpfc hba data structure.
5069  *
5070  * This routine is invoked to stop an SLI4 device port, it stops the device
5071  * from generating interrupts and stops the device driver's timers for the
5072  * device.
5073  **/
5074 static void
5075 lpfc_stop_port_s4(struct lpfc_hba *phba)
5076 {
5077         /* Reset some HBA SLI4 setup states */
5078         lpfc_stop_hba_timers(phba);
5079         if (phba->pport)
5080                 phba->pport->work_port_events = 0;
5081         phba->sli4_hba.intr_enable = 0;
5082 }
5083
5084 /**
5085  * lpfc_stop_port - Wrapper function for stopping hba port
5086  * @phba: Pointer to HBA context object.
5087  *
5088  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
5089  * the API jump table function pointer from the lpfc_hba struct.
5090  **/
5091 void
5092 lpfc_stop_port(struct lpfc_hba *phba)
5093 {
5094         phba->lpfc_stop_port(phba);
5095
5096         if (phba->wq)
5097                 flush_workqueue(phba->wq);
5098 }
5099
5100 /**
5101  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
5102  * @phba: Pointer to hba for which this call is being executed.
5103  *
5104  * This routine starts the timer waiting for the FCF rediscovery to complete.
5105  **/
5106 void
5107 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
5108 {
5109         unsigned long fcf_redisc_wait_tmo =
5110                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
5111         /* Start fcf rediscovery wait period timer */
5112         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
5113         spin_lock_irq(&phba->hbalock);
5114         /* Allow action to new fcf asynchronous event */
5115         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
5116         /* Mark the FCF rediscovery pending state */
5117         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
5118         spin_unlock_irq(&phba->hbalock);
5119 }
5120
5121 /**
5122  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
5123  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
5124  *
5125  * This routine is invoked when waiting for FCF table rediscover has been
5126  * timed out. If new FCF record(s) has (have) been discovered during the
5127  * wait period, a new FCF event shall be added to the FCOE async event
5128  * list, and then worker thread shall be waked up for processing from the
5129  * worker thread context.
5130  **/
5131 static void
5132 lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
5133 {
5134         struct lpfc_hba *phba = timer_container_of(phba, t, fcf.redisc_wait);
5135
5136         /* Don't send FCF rediscovery event if timer cancelled */
5137         spin_lock_irq(&phba->hbalock);
5138         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
5139                 spin_unlock_irq(&phba->hbalock);
5140                 return;
5141         }
5142         /* Clear FCF rediscovery timer pending flag */
5143         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
5144         /* FCF rediscovery event to worker thread */
5145         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
5146         spin_unlock_irq(&phba->hbalock);
5147         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
5148                         "2776 FCF rediscover quiescent timer expired\n");
5149         /* wake up worker thread */
5150         lpfc_worker_wake_up(phba);
5151 }
5152
5153 /**
5154  * lpfc_vmid_poll - VMID timeout detection
5155  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
5156  *
5157  * This routine is invoked when there is no I/O on by a VM for the specified
5158  * amount of time. When this situation is detected, the VMID has to be
5159  * deregistered from the switch and all the local resources freed. The VMID
5160  * will be reassigned to the VM once the I/O begins.
5161  **/
5162 static void
5163 lpfc_vmid_poll(struct timer_list *t)
5164 {
5165         struct lpfc_hba *phba = timer_container_of(phba, t,
5166                                                    inactive_vmid_poll);
5167         u32 wake_up = 0;
5168
5169         /* check if there is a need to issue QFPA */
5170         if (phba->pport->vmid_priority_tagging) {
5171                 wake_up = 1;
5172                 phba->pport->work_port_events |= WORKER_CHECK_VMID_ISSUE_QFPA;
5173         }
5174
5175         /* Is the vmid inactivity timer enabled */
5176         if (phba->pport->vmid_inactivity_timeout ||
5177             test_bit(FC_DEREGISTER_ALL_APP_ID, &phba->pport->load_flag)) {
5178                 wake_up = 1;
5179                 phba->pport->work_port_events |= WORKER_CHECK_INACTIVE_VMID;
5180         }
5181
5182         if (wake_up)
5183                 lpfc_worker_wake_up(phba);
5184
5185         /* restart the timer for the next iteration */
5186         mod_timer(&phba->inactive_vmid_poll,
5187                   jiffies + secs_to_jiffies(LPFC_VMID_TIMER));
5188 }
5189
5190 /**
5191  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
5192  * @phba: pointer to lpfc hba data structure.
5193  * @acqe_link: pointer to the async link completion queue entry.
5194  *
5195  * This routine is to parse the SLI4 link-attention link fault code.
5196  **/
5197 static void
5198 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
5199                            struct lpfc_acqe_link *acqe_link)
5200 {
5201         switch (bf_get(lpfc_acqe_fc_la_att_type, acqe_link)) {
5202         case LPFC_FC_LA_TYPE_LINK_DOWN:
5203         case LPFC_FC_LA_TYPE_TRUNKING_EVENT:
5204         case LPFC_FC_LA_TYPE_ACTIVATE_FAIL:
5205         case LPFC_FC_LA_TYPE_LINK_RESET_PRTCL_EVT:
5206                 break;
5207         default:
5208                 switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
5209                 case LPFC_ASYNC_LINK_FAULT_NONE:
5210                 case LPFC_ASYNC_LINK_FAULT_LOCAL:
5211                 case LPFC_ASYNC_LINK_FAULT_REMOTE:
5212                 case LPFC_ASYNC_LINK_FAULT_LR_LRR:
5213                         break;
5214                 default:
5215                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5216                                         "0398 Unknown link fault code: x%x\n",
5217                                         bf_get(lpfc_acqe_link_fault, acqe_link));
5218                         break;
5219                 }
5220                 break;
5221         }
5222 }
5223
5224 /**
5225  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
5226  * @phba: pointer to lpfc hba data structure.
5227  * @acqe_link: pointer to the async link completion queue entry.
5228  *
5229  * This routine is to parse the SLI4 link attention type and translate it
5230  * into the base driver's link attention type coding.
5231  *
5232  * Return: Link attention type in terms of base driver's coding.
5233  **/
5234 static uint8_t
5235 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
5236                           struct lpfc_acqe_link *acqe_link)
5237 {
5238         uint8_t att_type;
5239
5240         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
5241         case LPFC_ASYNC_LINK_STATUS_DOWN:
5242         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
5243                 att_type = LPFC_ATT_LINK_DOWN;
5244                 break;
5245         case LPFC_ASYNC_LINK_STATUS_UP:
5246                 /* Ignore physical link up events - wait for logical link up */
5247                 att_type = LPFC_ATT_RESERVED;
5248                 break;
5249         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
5250                 att_type = LPFC_ATT_LINK_UP;
5251                 break;
5252         default:
5253                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5254                                 "0399 Invalid link attention type: x%x\n",
5255                                 bf_get(lpfc_acqe_link_status, acqe_link));
5256                 att_type = LPFC_ATT_RESERVED;
5257                 break;
5258         }
5259         return att_type;
5260 }
5261
5262 /**
5263  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
5264  * @phba: pointer to lpfc hba data structure.
5265  *
5266  * This routine is to get an SLI3 FC port's link speed in Mbps.
5267  *
5268  * Return: link speed in terms of Mbps.
5269  **/
5270 uint32_t
5271 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
5272 {
5273         uint32_t link_speed;
5274
5275         if (!lpfc_is_link_up(phba))
5276                 return 0;
5277
5278         if (phba->sli_rev <= LPFC_SLI_REV3) {
5279                 switch (phba->fc_linkspeed) {
5280                 case LPFC_LINK_SPEED_1GHZ:
5281                         link_speed = 1000;
5282                         break;
5283                 case LPFC_LINK_SPEED_2GHZ:
5284                         link_speed = 2000;
5285                         break;
5286                 case LPFC_LINK_SPEED_4GHZ:
5287                         link_speed = 4000;
5288                         break;
5289                 case LPFC_LINK_SPEED_8GHZ:
5290                         link_speed = 8000;
5291                         break;
5292                 case LPFC_LINK_SPEED_10GHZ:
5293                         link_speed = 10000;
5294                         break;
5295                 case LPFC_LINK_SPEED_16GHZ:
5296                         link_speed = 16000;
5297                         break;
5298                 default:
5299                         link_speed = 0;
5300                 }
5301         } else {
5302                 if (phba->sli4_hba.link_state.logical_speed)
5303                         link_speed =
5304                               phba->sli4_hba.link_state.logical_speed;
5305                 else
5306                         link_speed = phba->sli4_hba.link_state.speed;
5307         }
5308         return link_speed;
5309 }
5310
5311 /**
5312  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
5313  * @phba: pointer to lpfc hba data structure.
5314  * @evt_code: asynchronous event code.
5315  * @speed_code: asynchronous event link speed code.
5316  *
5317  * This routine is to parse the giving SLI4 async event link speed code into
5318  * value of Mbps for the link speed.
5319  *
5320  * Return: link speed in terms of Mbps.
5321  **/
5322 static uint32_t
5323 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
5324                            uint8_t speed_code)
5325 {
5326         uint32_t port_speed;
5327
5328         switch (evt_code) {
5329         case LPFC_TRAILER_CODE_LINK:
5330                 switch (speed_code) {
5331                 case LPFC_ASYNC_LINK_SPEED_ZERO:
5332                         port_speed = 0;
5333                         break;
5334                 case LPFC_ASYNC_LINK_SPEED_10MBPS:
5335                         port_speed = 10;
5336                         break;
5337                 case LPFC_ASYNC_LINK_SPEED_100MBPS:
5338                         port_speed = 100;
5339                         break;
5340                 case LPFC_ASYNC_LINK_SPEED_1GBPS:
5341                         port_speed = 1000;
5342                         break;
5343                 case LPFC_ASYNC_LINK_SPEED_10GBPS:
5344                         port_speed = 10000;
5345                         break;
5346                 case LPFC_ASYNC_LINK_SPEED_20GBPS:
5347                         port_speed = 20000;
5348                         break;
5349                 case LPFC_ASYNC_LINK_SPEED_25GBPS:
5350                         port_speed = 25000;
5351                         break;
5352                 case LPFC_ASYNC_LINK_SPEED_40GBPS:
5353                         port_speed = 40000;
5354                         break;
5355                 case LPFC_ASYNC_LINK_SPEED_100GBPS:
5356                         port_speed = 100000;
5357                         break;
5358                 default:
5359                         port_speed = 0;
5360                 }
5361                 break;
5362         case LPFC_TRAILER_CODE_FC:
5363                 switch (speed_code) {
5364                 case LPFC_FC_LA_SPEED_UNKNOWN:
5365                         port_speed = 0;
5366                         break;
5367                 case LPFC_FC_LA_SPEED_1G:
5368                         port_speed = 1000;
5369                         break;
5370                 case LPFC_FC_LA_SPEED_2G:
5371                         port_speed = 2000;
5372                         break;
5373                 case LPFC_FC_LA_SPEED_4G:
5374                         port_speed = 4000;
5375                         break;
5376                 case LPFC_FC_LA_SPEED_8G:
5377                         port_speed = 8000;
5378                         break;
5379                 case LPFC_FC_LA_SPEED_10G:
5380                         port_speed = 10000;
5381                         break;
5382                 case LPFC_FC_LA_SPEED_16G:
5383                         port_speed = 16000;
5384                         break;
5385                 case LPFC_FC_LA_SPEED_32G:
5386                         port_speed = 32000;
5387                         break;
5388                 case LPFC_FC_LA_SPEED_64G:
5389                         port_speed = 64000;
5390                         break;
5391                 case LPFC_FC_LA_SPEED_128G:
5392                         port_speed = 128000;
5393                         break;
5394                 case LPFC_FC_LA_SPEED_256G:
5395                         port_speed = 256000;
5396                         break;
5397                 default:
5398                         port_speed = 0;
5399                 }
5400                 break;
5401         default:
5402                 port_speed = 0;
5403         }
5404         return port_speed;
5405 }
5406
5407 /**
5408  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
5409  * @phba: pointer to lpfc hba data structure.
5410  * @acqe_link: pointer to the async link completion queue entry.
5411  *
5412  * This routine is to handle the SLI4 asynchronous FCoE link event.
5413  **/
5414 static void
5415 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
5416                          struct lpfc_acqe_link *acqe_link)
5417 {
5418         LPFC_MBOXQ_t *pmb;
5419         MAILBOX_t *mb;
5420         struct lpfc_mbx_read_top *la;
5421         uint8_t att_type;
5422         int rc;
5423
5424         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
5425         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
5426                 return;
5427         phba->fcoe_eventtag = acqe_link->event_tag;
5428         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5429         if (!pmb) {
5430                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5431                                 "0395 The mboxq allocation failed\n");
5432                 return;
5433         }
5434
5435         rc = lpfc_mbox_rsrc_prep(phba, pmb);
5436         if (rc) {
5437                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5438                                 "0396 mailbox allocation failed\n");
5439                 goto out_free_pmb;
5440         }
5441
5442         /* Cleanup any outstanding ELS commands */
5443         lpfc_els_flush_all_cmd(phba);
5444
5445         /* Block ELS IOCBs until we have done process link event */
5446         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5447
5448         /* Update link event statistics */
5449         phba->sli.slistat.link_event++;
5450
5451         /* Create lpfc_handle_latt mailbox command from link ACQE */
5452         lpfc_read_topology(phba, pmb, pmb->ctx_buf);
5453         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5454         pmb->vport = phba->pport;
5455
5456         /* Keep the link status for extra SLI4 state machine reference */
5457         phba->sli4_hba.link_state.speed =
5458                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
5459                                 bf_get(lpfc_acqe_link_speed, acqe_link));
5460         phba->sli4_hba.link_state.duplex =
5461                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
5462         phba->sli4_hba.link_state.status =
5463                                 bf_get(lpfc_acqe_link_status, acqe_link);
5464         phba->sli4_hba.link_state.type =
5465                                 bf_get(lpfc_acqe_link_type, acqe_link);
5466         phba->sli4_hba.link_state.number =
5467                                 bf_get(lpfc_acqe_link_number, acqe_link);
5468         phba->sli4_hba.link_state.fault =
5469                                 bf_get(lpfc_acqe_link_fault, acqe_link);
5470         phba->sli4_hba.link_state.logical_speed =
5471                         bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
5472
5473         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5474                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
5475                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
5476                         "Logical speed:%dMbps Fault:%d\n",
5477                         phba->sli4_hba.link_state.speed,
5478                         phba->sli4_hba.link_state.topology,
5479                         phba->sli4_hba.link_state.status,
5480                         phba->sli4_hba.link_state.type,
5481                         phba->sli4_hba.link_state.number,
5482                         phba->sli4_hba.link_state.logical_speed,
5483                         phba->sli4_hba.link_state.fault);
5484         /*
5485          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
5486          * topology info. Note: Optional for non FC-AL ports.
5487          */
5488         if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
5489                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5490                 if (rc == MBX_NOT_FINISHED)
5491                         goto out_free_pmb;
5492                 return;
5493         }
5494         /*
5495          * For FCoE Mode: fill in all the topology information we need and call
5496          * the READ_TOPOLOGY completion routine to continue without actually
5497          * sending the READ_TOPOLOGY mailbox command to the port.
5498          */
5499         /* Initialize completion status */
5500         mb = &pmb->u.mb;
5501         mb->mbxStatus = MBX_SUCCESS;
5502
5503         /* Parse port fault information field */
5504         lpfc_sli4_parse_latt_fault(phba, acqe_link);
5505
5506         /* Parse and translate link attention fields */
5507         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
5508         la->eventTag = acqe_link->event_tag;
5509         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
5510         bf_set(lpfc_mbx_read_top_link_spd, la,
5511                (bf_get(lpfc_acqe_link_speed, acqe_link)));
5512
5513         /* Fake the following irrelevant fields */
5514         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
5515         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
5516         bf_set(lpfc_mbx_read_top_il, la, 0);
5517         bf_set(lpfc_mbx_read_top_pb, la, 0);
5518         bf_set(lpfc_mbx_read_top_fa, la, 0);
5519         bf_set(lpfc_mbx_read_top_mm, la, 0);
5520
5521         /* Invoke the lpfc_handle_latt mailbox command callback function */
5522         lpfc_mbx_cmpl_read_topology(phba, pmb);
5523
5524         return;
5525
5526 out_free_pmb:
5527         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
5528 }
5529
5530 /**
5531  * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read
5532  * topology.
5533  * @phba: pointer to lpfc hba data structure.
5534  * @speed_code: asynchronous event link speed code.
5535  *
5536  * This routine is to parse the giving SLI4 async event link speed code into
5537  * value of Read topology link speed.
5538  *
5539  * Return: link speed in terms of Read topology.
5540  **/
5541 static uint8_t
5542 lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
5543 {
5544         uint8_t port_speed;
5545
5546         switch (speed_code) {
5547         case LPFC_FC_LA_SPEED_1G:
5548                 port_speed = LPFC_LINK_SPEED_1GHZ;
5549                 break;
5550         case LPFC_FC_LA_SPEED_2G:
5551                 port_speed = LPFC_LINK_SPEED_2GHZ;
5552                 break;
5553         case LPFC_FC_LA_SPEED_4G:
5554                 port_speed = LPFC_LINK_SPEED_4GHZ;
5555                 break;
5556         case LPFC_FC_LA_SPEED_8G:
5557                 port_speed = LPFC_LINK_SPEED_8GHZ;
5558                 break;
5559         case LPFC_FC_LA_SPEED_16G:
5560                 port_speed = LPFC_LINK_SPEED_16GHZ;
5561                 break;
5562         case LPFC_FC_LA_SPEED_32G:
5563                 port_speed = LPFC_LINK_SPEED_32GHZ;
5564                 break;
5565         case LPFC_FC_LA_SPEED_64G:
5566                 port_speed = LPFC_LINK_SPEED_64GHZ;
5567                 break;
5568         case LPFC_FC_LA_SPEED_128G:
5569                 port_speed = LPFC_LINK_SPEED_128GHZ;
5570                 break;
5571         case LPFC_FC_LA_SPEED_256G:
5572                 port_speed = LPFC_LINK_SPEED_256GHZ;
5573                 break;
5574         default:
5575                 port_speed = 0;
5576                 break;
5577         }
5578
5579         return port_speed;
5580 }
5581
5582 void
5583 lpfc_cgn_dump_rxmonitor(struct lpfc_hba *phba)
5584 {
5585         if (!phba->rx_monitor) {
5586                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5587                                 "4411 Rx Monitor Info is empty.\n");
5588         } else {
5589                 lpfc_rx_monitor_report(phba, phba->rx_monitor, NULL, 0,
5590                                        LPFC_MAX_RXMONITOR_DUMP);
5591         }
5592 }
5593
5594 /**
5595  * lpfc_cgn_update_stat - Save data into congestion stats buffer
5596  * @phba: pointer to lpfc hba data structure.
5597  * @dtag: FPIN descriptor received
5598  *
5599  * Increment the FPIN received counter/time when it happens.
5600  */
5601 void
5602 lpfc_cgn_update_stat(struct lpfc_hba *phba, uint32_t dtag)
5603 {
5604         struct lpfc_cgn_info *cp;
5605         u32 value;
5606
5607         /* Make sure we have a congestion info buffer */
5608         if (!phba->cgn_i)
5609                 return;
5610         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
5611
5612         /* Update congestion statistics */
5613         switch (dtag) {
5614         case ELS_DTAG_LNK_INTEGRITY:
5615                 le32_add_cpu(&cp->link_integ_notification, 1);
5616                 lpfc_cgn_update_tstamp(phba, &cp->stat_lnk);
5617                 break;
5618         case ELS_DTAG_DELIVERY:
5619                 le32_add_cpu(&cp->delivery_notification, 1);
5620                 lpfc_cgn_update_tstamp(phba, &cp->stat_delivery);
5621                 break;
5622         case ELS_DTAG_PEER_CONGEST:
5623                 le32_add_cpu(&cp->cgn_peer_notification, 1);
5624                 lpfc_cgn_update_tstamp(phba, &cp->stat_peer);
5625                 break;
5626         case ELS_DTAG_CONGESTION:
5627                 le32_add_cpu(&cp->cgn_notification, 1);
5628                 lpfc_cgn_update_tstamp(phba, &cp->stat_fpin);
5629         }
5630         if (phba->cgn_fpin_frequency &&
5631             phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
5632                 value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
5633                 cp->cgn_stat_npm = value;
5634         }
5635
5636         value = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
5637                                     LPFC_CGN_CRC32_SEED);
5638         cp->cgn_info_crc = cpu_to_le32(value);
5639 }
5640
5641 /**
5642  * lpfc_cgn_update_tstamp - Update cmf timestamp
5643  * @phba: pointer to lpfc hba data structure.
5644  * @ts: structure to write the timestamp to.
5645  */
5646 void
5647 lpfc_cgn_update_tstamp(struct lpfc_hba *phba, struct lpfc_cgn_ts *ts)
5648 {
5649         struct timespec64 cur_time;
5650         struct tm tm_val;
5651
5652         ktime_get_real_ts64(&cur_time);
5653         time64_to_tm(cur_time.tv_sec, 0, &tm_val);
5654
5655         ts->month = tm_val.tm_mon + 1;
5656         ts->day = tm_val.tm_mday;
5657         ts->year = tm_val.tm_year - 100;
5658         ts->hour = tm_val.tm_hour;
5659         ts->minute = tm_val.tm_min;
5660         ts->second = tm_val.tm_sec;
5661
5662         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5663                         "2646 Updated CMF timestamp : "
5664                         "%u/%u/%u %u:%u:%u\n",
5665                         ts->day, ts->month,
5666                         ts->year, ts->hour,
5667                         ts->minute, ts->second);
5668 }
5669
5670 /**
5671  * lpfc_cmf_stats_timer - Save data into registered congestion buffer
5672  * @timer: Timer cookie to access lpfc private data
5673  *
5674  * Save the congestion event data every minute.
5675  * On the hour collapse all the minute data into hour data. Every day
5676  * collapse all the hour data into daily data. Separate driver
5677  * and fabrc congestion event counters that will be saved out
5678  * to the registered congestion buffer every minute.
5679  */
5680 static enum hrtimer_restart
5681 lpfc_cmf_stats_timer(struct hrtimer *timer)
5682 {
5683         struct lpfc_hba *phba;
5684         struct lpfc_cgn_info *cp;
5685         uint32_t i, index;
5686         uint16_t value, mvalue;
5687         uint64_t bps;
5688         uint32_t mbps;
5689         uint32_t dvalue, wvalue, lvalue, avalue;
5690         uint64_t latsum;
5691         __le16 *ptr;
5692         __le32 *lptr;
5693         __le16 *mptr;
5694
5695         phba = container_of(timer, struct lpfc_hba, cmf_stats_timer);
5696         /* Make sure we have a congestion info buffer */
5697         if (!phba->cgn_i)
5698                 return HRTIMER_NORESTART;
5699         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
5700
5701         phba->cgn_evt_timestamp = jiffies +
5702                         msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);
5703         phba->cgn_evt_minute++;
5704
5705         /* We should get to this point in the routine on 1 minute intervals */
5706         lpfc_cgn_update_tstamp(phba, &cp->base_time);
5707
5708         if (phba->cgn_fpin_frequency &&
5709             phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
5710                 value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
5711                 cp->cgn_stat_npm = value;
5712         }
5713
5714         /* Read and clear the latency counters for this minute */
5715         lvalue = atomic_read(&phba->cgn_latency_evt_cnt);
5716         latsum = atomic64_read(&phba->cgn_latency_evt);
5717         atomic_set(&phba->cgn_latency_evt_cnt, 0);
5718         atomic64_set(&phba->cgn_latency_evt, 0);
5719
5720         /* We need to store MB/sec bandwidth in the congestion information.
5721          * block_cnt is count of 512 byte blocks for the entire minute,
5722          * bps will get bytes per sec before finally converting to MB/sec.
5723          */
5724         bps = div_u64(phba->rx_block_cnt, LPFC_SEC_MIN) * 512;
5725         phba->rx_block_cnt = 0;
5726         mvalue = bps / (1024 * 1024); /* convert to MB/sec */
5727
5728         /* Every minute */
5729         /* cgn parameters */
5730         cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
5731         cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
5732         cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
5733         cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
5734
5735         /* Fill in default LUN qdepth */
5736         value = (uint16_t)(phba->pport->cfg_lun_queue_depth);
5737         cp->cgn_lunq = cpu_to_le16(value);
5738
5739         /* Record congestion buffer info - every minute
5740          * cgn_driver_evt_cnt (Driver events)
5741          * cgn_fabric_warn_cnt (Congestion Warnings)
5742          * cgn_latency_evt_cnt / cgn_latency_evt (IO Latency)
5743          * cgn_fabric_alarm_cnt (Congestion Alarms)
5744          */
5745         index = ++cp->cgn_index_minute;
5746         if (cp->cgn_index_minute == LPFC_MIN_HOUR) {
5747                 cp->cgn_index_minute = 0;
5748                 index = 0;
5749         }
5750
5751         /* Get the number of driver events in this sample and reset counter */
5752         dvalue = atomic_read(&phba->cgn_driver_evt_cnt);
5753         atomic_set(&phba->cgn_driver_evt_cnt, 0);
5754
5755         /* Get the number of warning events - FPIN and Signal for this minute */
5756         wvalue = 0;
5757         if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) ||
5758             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
5759             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
5760                 wvalue = atomic_read(&phba->cgn_fabric_warn_cnt);
5761         atomic_set(&phba->cgn_fabric_warn_cnt, 0);
5762
5763         /* Get the number of alarm events - FPIN and Signal for this minute */
5764         avalue = 0;
5765         if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) ||
5766             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
5767                 avalue = atomic_read(&phba->cgn_fabric_alarm_cnt);
5768         atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
5769
5770         /* Collect the driver, warning, alarm and latency counts for this
5771          * minute into the driver congestion buffer.
5772          */
5773         ptr = &cp->cgn_drvr_min[index];
5774         value = (uint16_t)dvalue;
5775         *ptr = cpu_to_le16(value);
5776
5777         ptr = &cp->cgn_warn_min[index];
5778         value = (uint16_t)wvalue;
5779         *ptr = cpu_to_le16(value);
5780
5781         ptr = &cp->cgn_alarm_min[index];
5782         value = (uint16_t)avalue;
5783         *ptr = cpu_to_le16(value);
5784
5785         lptr = &cp->cgn_latency_min[index];
5786         if (lvalue) {
5787                 lvalue = (uint32_t)div_u64(latsum, lvalue);
5788                 *lptr = cpu_to_le32(lvalue);
5789         } else {
5790                 *lptr = 0;
5791         }
5792
5793         /* Collect the bandwidth value into the driver's congesion buffer. */
5794         mptr = &cp->cgn_bw_min[index];
5795         *mptr = cpu_to_le16(mvalue);
5796
5797         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5798                         "2418 Congestion Info - minute (%d): %d %d %d %d %d\n",
5799                         index, dvalue, wvalue, *lptr, mvalue, avalue);
5800
5801         /* Every hour */
5802         if ((phba->cgn_evt_minute % LPFC_MIN_HOUR) == 0) {
5803                 /* Record congestion buffer info - every hour
5804                  * Collapse all minutes into an hour
5805                  */
5806                 index = ++cp->cgn_index_hour;
5807                 if (cp->cgn_index_hour == LPFC_HOUR_DAY) {
5808                         cp->cgn_index_hour = 0;
5809                         index = 0;
5810                 }
5811
5812                 dvalue = 0;
5813                 wvalue = 0;
5814                 lvalue = 0;
5815                 avalue = 0;
5816                 mvalue = 0;
5817                 mbps = 0;
5818                 for (i = 0; i < LPFC_MIN_HOUR; i++) {
5819                         dvalue += le16_to_cpu(cp->cgn_drvr_min[i]);
5820                         wvalue += le16_to_cpu(cp->cgn_warn_min[i]);
5821                         lvalue += le32_to_cpu(cp->cgn_latency_min[i]);
5822                         mbps += le16_to_cpu(cp->cgn_bw_min[i]);
5823                         avalue += le16_to_cpu(cp->cgn_alarm_min[i]);
5824                 }
5825                 if (lvalue)             /* Avg of latency averages */
5826                         lvalue /= LPFC_MIN_HOUR;
5827                 if (mbps)               /* Avg of Bandwidth averages */
5828                         mvalue = mbps / LPFC_MIN_HOUR;
5829
5830                 lptr = &cp->cgn_drvr_hr[index];
5831                 *lptr = cpu_to_le32(dvalue);
5832                 lptr = &cp->cgn_warn_hr[index];
5833                 *lptr = cpu_to_le32(wvalue);
5834                 lptr = &cp->cgn_latency_hr[index];
5835                 *lptr = cpu_to_le32(lvalue);
5836                 mptr = &cp->cgn_bw_hr[index];
5837                 *mptr = cpu_to_le16(mvalue);
5838                 lptr = &cp->cgn_alarm_hr[index];
5839                 *lptr = cpu_to_le32(avalue);
5840
5841                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5842                                 "2419 Congestion Info - hour "
5843                                 "(%d): %d %d %d %d %d\n",
5844                                 index, dvalue, wvalue, lvalue, mvalue, avalue);
5845         }
5846
5847         /* Every day */
5848         if ((phba->cgn_evt_minute % LPFC_MIN_DAY) == 0) {
5849                 /* Record congestion buffer info - every hour
5850                  * Collapse all hours into a day. Rotate days
5851                  * after LPFC_MAX_CGN_DAYS.
5852                  */
5853                 index = ++cp->cgn_index_day;
5854                 if (cp->cgn_index_day == LPFC_MAX_CGN_DAYS) {
5855                         cp->cgn_index_day = 0;
5856                         index = 0;
5857                 }
5858
5859                 dvalue = 0;
5860                 wvalue = 0;
5861                 lvalue = 0;
5862                 mvalue = 0;
5863                 mbps = 0;
5864                 avalue = 0;
5865                 for (i = 0; i < LPFC_HOUR_DAY; i++) {
5866                         dvalue += le32_to_cpu(cp->cgn_drvr_hr[i]);
5867                         wvalue += le32_to_cpu(cp->cgn_warn_hr[i]);
5868                         lvalue += le32_to_cpu(cp->cgn_latency_hr[i]);
5869                         mbps += le16_to_cpu(cp->cgn_bw_hr[i]);
5870                         avalue += le32_to_cpu(cp->cgn_alarm_hr[i]);
5871                 }
5872                 if (lvalue)             /* Avg of latency averages */
5873                         lvalue /= LPFC_HOUR_DAY;
5874                 if (mbps)               /* Avg of Bandwidth averages */
5875                         mvalue = mbps / LPFC_HOUR_DAY;
5876
5877                 lptr = &cp->cgn_drvr_day[index];
5878                 *lptr = cpu_to_le32(dvalue);
5879                 lptr = &cp->cgn_warn_day[index];
5880                 *lptr = cpu_to_le32(wvalue);
5881                 lptr = &cp->cgn_latency_day[index];
5882                 *lptr = cpu_to_le32(lvalue);
5883                 mptr = &cp->cgn_bw_day[index];
5884                 *mptr = cpu_to_le16(mvalue);
5885                 lptr = &cp->cgn_alarm_day[index];
5886                 *lptr = cpu_to_le32(avalue);
5887
5888                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5889                                 "2420 Congestion Info - daily (%d): "
5890                                 "%d %d %d %d %d\n",
5891                                 index, dvalue, wvalue, lvalue, mvalue, avalue);
5892         }
5893
5894         /* Use the frequency found in the last rcv'ed FPIN */
5895         value = phba->cgn_fpin_frequency;
5896         cp->cgn_warn_freq = cpu_to_le16(value);
5897         cp->cgn_alarm_freq = cpu_to_le16(value);
5898
5899         lvalue = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
5900                                      LPFC_CGN_CRC32_SEED);
5901         cp->cgn_info_crc = cpu_to_le32(lvalue);
5902
5903         hrtimer_forward_now(timer, ktime_set(0, LPFC_SEC_MIN * NSEC_PER_SEC));
5904
5905         return HRTIMER_RESTART;
5906 }
5907
5908 /**
5909  * lpfc_calc_cmf_latency - latency from start of rxate timer interval
5910  * @phba: The Hba for which this call is being executed.
5911  *
5912  * The routine calculates the latency from the beginning of the CMF timer
5913  * interval to the current point in time. It is called from IO completion
5914  * when we exceed our Bandwidth limitation for the time interval.
5915  */
5916 uint32_t
5917 lpfc_calc_cmf_latency(struct lpfc_hba *phba)
5918 {
5919         struct timespec64 cmpl_time;
5920         uint32_t msec = 0;
5921
5922         ktime_get_real_ts64(&cmpl_time);
5923
5924         /* This routine works on a ms granularity so sec and usec are
5925          * converted accordingly.
5926          */
5927         if (cmpl_time.tv_sec == phba->cmf_latency.tv_sec) {
5928                 msec = (cmpl_time.tv_nsec - phba->cmf_latency.tv_nsec) /
5929                         NSEC_PER_MSEC;
5930         } else {
5931                 if (cmpl_time.tv_nsec >= phba->cmf_latency.tv_nsec) {
5932                         msec = (cmpl_time.tv_sec -
5933                                 phba->cmf_latency.tv_sec) * MSEC_PER_SEC;
5934                         msec += ((cmpl_time.tv_nsec -
5935                                   phba->cmf_latency.tv_nsec) / NSEC_PER_MSEC);
5936                 } else {
5937                         msec = (cmpl_time.tv_sec - phba->cmf_latency.tv_sec -
5938                                 1) * MSEC_PER_SEC;
5939                         msec += (((NSEC_PER_SEC - phba->cmf_latency.tv_nsec) +
5940                                  cmpl_time.tv_nsec) / NSEC_PER_MSEC);
5941                 }
5942         }
5943         return msec;
5944 }
5945
5946 /**
5947  * lpfc_cmf_timer -  This is the timer function for one congestion
5948  * rate interval.
5949  * @timer: Pointer to the high resolution timer that expired
5950  */
5951 static enum hrtimer_restart
5952 lpfc_cmf_timer(struct hrtimer *timer)
5953 {
5954         struct lpfc_hba *phba = container_of(timer, struct lpfc_hba,
5955                                              cmf_timer);
5956         struct rx_info_entry entry;
5957         uint32_t io_cnt;
5958         uint32_t busy, max_read;
5959         uint64_t total, rcv, lat, mbpi, extra, cnt;
5960         int timer_interval = LPFC_CMF_INTERVAL;
5961         uint32_t ms;
5962         struct lpfc_cgn_stat *cgs;
5963         int cpu;
5964
5965         /* Only restart the timer if congestion mgmt is on */
5966         if (phba->cmf_active_mode == LPFC_CFG_OFF ||
5967             !phba->cmf_latency.tv_sec) {
5968                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5969                                 "6224 CMF timer exit: %d %lld\n",
5970                                 phba->cmf_active_mode,
5971                                 (uint64_t)phba->cmf_latency.tv_sec);
5972                 return HRTIMER_NORESTART;
5973         }
5974
5975         /* If pport is not ready yet, just exit and wait for
5976          * the next timer cycle to hit.
5977          */
5978         if (!phba->pport)
5979                 goto skip;
5980
5981         /* Do not block SCSI IO while in the timer routine since
5982          * total_bytes will be cleared
5983          */
5984         atomic_set(&phba->cmf_stop_io, 1);
5985
5986         /* First we need to calculate the actual ms between
5987          * the last timer interrupt and this one. We ask for
5988          * LPFC_CMF_INTERVAL, however the actual time may
5989          * vary depending on system overhead.
5990          */
5991         ms = lpfc_calc_cmf_latency(phba);
5992
5993
5994         /* Immediately after we calculate the time since the last
5995          * timer interrupt, set the start time for the next
5996          * interrupt
5997          */
5998         ktime_get_real_ts64(&phba->cmf_latency);
5999
6000         phba->cmf_link_byte_count =
6001                 div_u64(phba->cmf_max_line_rate * LPFC_CMF_INTERVAL, 1000);
6002
6003         /* Collect all the stats from the prior timer interval */
6004         total = 0;
6005         io_cnt = 0;
6006         lat = 0;
6007         rcv = 0;
6008         for_each_present_cpu(cpu) {
6009                 cgs = per_cpu_ptr(phba->cmf_stat, cpu);
6010                 total += atomic64_xchg(&cgs->total_bytes, 0);
6011                 io_cnt += atomic_xchg(&cgs->rx_io_cnt, 0);
6012                 lat += atomic64_xchg(&cgs->rx_latency, 0);
6013                 rcv += atomic64_xchg(&cgs->rcv_bytes, 0);
6014         }
6015
6016         /* Before we issue another CMF_SYNC_WQE, retrieve the BW
6017          * returned from the last CMF_SYNC_WQE issued, from
6018          * cmf_last_sync_bw. This will be the target BW for
6019          * this next timer interval.
6020          */
6021         if (phba->cmf_active_mode == LPFC_CFG_MANAGED &&
6022             phba->link_state != LPFC_LINK_DOWN &&
6023             test_bit(HBA_SETUP, &phba->hba_flag)) {
6024                 mbpi = phba->cmf_last_sync_bw;
6025                 phba->cmf_last_sync_bw = 0;
6026                 extra = 0;
6027
6028                 /* Calculate any extra bytes needed to account for the
6029                  * timer accuracy. If we are less than LPFC_CMF_INTERVAL
6030                  * calculate the adjustment needed for total to reflect
6031                  * a full LPFC_CMF_INTERVAL.
6032                  */
6033                 if (ms && ms < LPFC_CMF_INTERVAL) {
6034                         cnt = div_u64(total, ms); /* bytes per ms */
6035                         cnt *= LPFC_CMF_INTERVAL; /* what total should be */
6036                         extra = cnt - total;
6037                 }
6038                 lpfc_issue_cmf_sync_wqe(phba, LPFC_CMF_INTERVAL, total + extra);
6039         } else {
6040                 /* For Monitor mode or link down we want mbpi
6041                  * to be the full link speed
6042                  */
6043                 mbpi = phba->cmf_link_byte_count;
6044                 extra = 0;
6045         }
6046         phba->cmf_timer_cnt++;
6047
6048         if (io_cnt) {
6049                 /* Update congestion info buffer latency in us */
6050                 atomic_add(io_cnt, &phba->cgn_latency_evt_cnt);
6051                 atomic64_add(lat, &phba->cgn_latency_evt);
6052         }
6053         busy = atomic_xchg(&phba->cmf_busy, 0);
6054         max_read = atomic_xchg(&phba->rx_max_read_cnt, 0);
6055
6056         /* Calculate MBPI for the next timer interval */
6057         if (mbpi) {
6058                 if (mbpi > phba->cmf_link_byte_count ||
6059                     phba->cmf_active_mode == LPFC_CFG_MONITOR)
6060                         mbpi = phba->cmf_link_byte_count;
6061
6062                 /* Change max_bytes_per_interval to what the prior
6063                  * CMF_SYNC_WQE cmpl indicated.
6064                  */
6065                 if (mbpi != phba->cmf_max_bytes_per_interval)
6066                         phba->cmf_max_bytes_per_interval = mbpi;
6067         }
6068
6069         /* Save rxmonitor information for debug */
6070         if (phba->rx_monitor) {
6071                 entry.total_bytes = total;
6072                 entry.cmf_bytes = total + extra;
6073                 entry.rcv_bytes = rcv;
6074                 entry.cmf_busy = busy;
6075                 entry.cmf_info = phba->cmf_active_info;
6076                 if (io_cnt) {
6077                         entry.avg_io_latency = div_u64(lat, io_cnt);
6078                         entry.avg_io_size = div_u64(rcv, io_cnt);
6079                 } else {
6080                         entry.avg_io_latency = 0;
6081                         entry.avg_io_size = 0;
6082                 }
6083                 entry.max_read_cnt = max_read;
6084                 entry.io_cnt = io_cnt;
6085                 entry.max_bytes_per_interval = mbpi;
6086                 if (phba->cmf_active_mode == LPFC_CFG_MANAGED)
6087                         entry.timer_utilization = phba->cmf_last_ts;
6088                 else
6089                         entry.timer_utilization = ms;
6090                 entry.timer_interval = ms;
6091                 phba->cmf_last_ts = 0;
6092
6093                 lpfc_rx_monitor_record(phba->rx_monitor, &entry);
6094         }
6095
6096         if (phba->cmf_active_mode == LPFC_CFG_MONITOR) {
6097                 /* If Monitor mode, check if we are oversubscribed
6098                  * against the full line rate.
6099                  */
6100                 if (mbpi && total > mbpi)
6101                         atomic_inc(&phba->cgn_driver_evt_cnt);
6102         }
6103         phba->rx_block_cnt += div_u64(rcv, 512);  /* save 512 byte block cnt */
6104
6105         /* Since total_bytes has already been zero'ed, its okay to unblock
6106          * after max_bytes_per_interval is setup.
6107          */
6108         if (atomic_xchg(&phba->cmf_bw_wait, 0))
6109                 queue_work(phba->wq, &phba->unblock_request_work);
6110
6111         /* SCSI IO is now unblocked */
6112         atomic_set(&phba->cmf_stop_io, 0);
6113
6114 skip:
6115         hrtimer_forward_now(timer,
6116                             ktime_set(0, timer_interval * NSEC_PER_MSEC));
6117         return HRTIMER_RESTART;
6118 }
6119
6120 #define trunk_link_status(__idx)\
6121         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
6122                ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\
6123                 "Link up" : "Link down") : "NA"
6124 /* Did port __idx reported an error */
6125 #define trunk_port_fault(__idx)\
6126         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
6127                (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"
6128
6129 static void
6130 lpfc_update_trunk_link_status(struct lpfc_hba *phba,
6131                               struct lpfc_acqe_fc_la *acqe_fc)
6132 {
6133         uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);
6134         uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);
6135         u8 cnt = 0;
6136
6137         phba->sli4_hba.link_state.speed =
6138                 lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
6139                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
6140
6141         phba->sli4_hba.link_state.logical_speed =
6142                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
6143         /* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */
6144         phba->fc_linkspeed =
6145                  lpfc_async_link_speed_to_read_top(
6146                                 phba,
6147                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
6148
6149         if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {
6150                 phba->trunk_link.link0.state =
6151                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)
6152                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6153                 phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;
6154                 cnt++;
6155         }
6156         if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {
6157                 phba->trunk_link.link1.state =
6158                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)
6159                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6160                 phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;
6161                 cnt++;
6162         }
6163         if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {
6164                 phba->trunk_link.link2.state =
6165                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)
6166                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6167                 phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;
6168                 cnt++;
6169         }
6170         if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {
6171                 phba->trunk_link.link3.state =
6172                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)
6173                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6174                 phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;
6175                 cnt++;
6176         }
6177
6178         if (cnt)
6179                 phba->trunk_link.phy_lnk_speed =
6180                         phba->sli4_hba.link_state.logical_speed / (cnt * 1000);
6181         else
6182                 phba->trunk_link.phy_lnk_speed = LPFC_LINK_SPEED_UNKNOWN;
6183
6184         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6185                         "2910 Async FC Trunking Event - Speed:%d\n"
6186                         "\tLogical speed:%d "
6187                         "port0: %s port1: %s port2: %s port3: %s\n",
6188                         phba->sli4_hba.link_state.speed,
6189                         phba->sli4_hba.link_state.logical_speed,
6190                         trunk_link_status(0), trunk_link_status(1),
6191                         trunk_link_status(2), trunk_link_status(3));
6192
6193         if (phba->cmf_active_mode != LPFC_CFG_OFF)
6194                 lpfc_cmf_signal_init(phba);
6195
6196         if (port_fault)
6197                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6198                                 "3202 trunk error:0x%x (%s) seen on port0:%s "
6199                                 /*
6200                                  * SLI-4: We have only 0xA error codes
6201                                  * defined as of now. print an appropriate
6202                                  * message in case driver needs to be updated.
6203                                  */
6204                                 "port1:%s port2:%s port3:%s\n", err, err > 0xA ?
6205                                 "UNDEFINED. update driver." : trunk_errmsg[err],
6206                                 trunk_port_fault(0), trunk_port_fault(1),
6207                                 trunk_port_fault(2), trunk_port_fault(3));
6208 }
6209
6210
6211 /**
6212  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
6213  * @phba: pointer to lpfc hba data structure.
6214  * @acqe_fc: pointer to the async fc completion queue entry.
6215  *
6216  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
6217  * that the event was received and then issue a read_topology mailbox command so
6218  * that the rest of the driver will treat it the same as SLI3.
6219  **/
6220 static void
6221 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
6222 {
6223         LPFC_MBOXQ_t *pmb;
6224         MAILBOX_t *mb;
6225         struct lpfc_mbx_read_top *la;
6226         char *log_level;
6227         int rc;
6228
6229         if (bf_get(lpfc_trailer_type, acqe_fc) !=
6230             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
6231                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6232                                 "2895 Non FC link Event detected.(%d)\n",
6233                                 bf_get(lpfc_trailer_type, acqe_fc));
6234                 return;
6235         }
6236
6237         if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
6238             LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
6239                 lpfc_update_trunk_link_status(phba, acqe_fc);
6240                 return;
6241         }
6242
6243         /* Keep the link status for extra SLI4 state machine reference */
6244         phba->sli4_hba.link_state.speed =
6245                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
6246                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
6247         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
6248         phba->sli4_hba.link_state.topology =
6249                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
6250         phba->sli4_hba.link_state.status =
6251                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
6252         phba->sli4_hba.link_state.type =
6253                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
6254         phba->sli4_hba.link_state.number =
6255                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
6256         phba->sli4_hba.link_state.fault =
6257                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
6258         phba->sli4_hba.link_state.link_status =
6259                                 bf_get(lpfc_acqe_fc_la_link_status, acqe_fc);
6260
6261         /*
6262          * Only select attention types need logical speed modification to what
6263          * was previously set.
6264          */
6265         if (phba->sli4_hba.link_state.status >= LPFC_FC_LA_TYPE_LINK_UP &&
6266             phba->sli4_hba.link_state.status < LPFC_FC_LA_TYPE_ACTIVATE_FAIL) {
6267                 if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
6268                     LPFC_FC_LA_TYPE_LINK_DOWN)
6269                         phba->sli4_hba.link_state.logical_speed = 0;
6270                 else if (!phba->sli4_hba.conf_trunk)
6271                         phba->sli4_hba.link_state.logical_speed =
6272                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
6273         }
6274
6275         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6276                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
6277                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
6278                         "%dMbps Fault:x%x Link Status:x%x\n",
6279                         phba->sli4_hba.link_state.speed,
6280                         phba->sli4_hba.link_state.topology,
6281                         phba->sli4_hba.link_state.status,
6282                         phba->sli4_hba.link_state.type,
6283                         phba->sli4_hba.link_state.number,
6284                         phba->sli4_hba.link_state.logical_speed,
6285                         phba->sli4_hba.link_state.fault,
6286                         phba->sli4_hba.link_state.link_status);
6287
6288         /*
6289          * The following attention types are informational only, providing
6290          * further details about link status.  Overwrite the value of
6291          * link_state.status appropriately.  No further action is required.
6292          */
6293         if (phba->sli4_hba.link_state.status >= LPFC_FC_LA_TYPE_ACTIVATE_FAIL) {
6294                 switch (phba->sli4_hba.link_state.status) {
6295                 case LPFC_FC_LA_TYPE_ACTIVATE_FAIL:
6296                         log_level = KERN_WARNING;
6297                         phba->sli4_hba.link_state.status =
6298                                         LPFC_FC_LA_TYPE_LINK_DOWN;
6299                         break;
6300                 case LPFC_FC_LA_TYPE_LINK_RESET_PRTCL_EVT:
6301                         /*
6302                          * During bb credit recovery establishment, receiving
6303                          * this attention type is normal.  Link Up attention
6304                          * type is expected to occur before this informational
6305                          * attention type so keep the Link Up status.
6306                          */
6307                         log_level = KERN_INFO;
6308                         phba->sli4_hba.link_state.status =
6309                                         LPFC_FC_LA_TYPE_LINK_UP;
6310                         break;
6311                 default:
6312                         log_level = KERN_INFO;
6313                         break;
6314                 }
6315                 lpfc_log_msg(phba, log_level, LOG_SLI,
6316                              "2992 Async FC event - Informational Link "
6317                              "Attention Type x%x\n",
6318                              bf_get(lpfc_acqe_fc_la_att_type, acqe_fc));
6319                 return;
6320         }
6321
6322         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6323         if (!pmb) {
6324                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6325                                 "2897 The mboxq allocation failed\n");
6326                 return;
6327         }
6328         rc = lpfc_mbox_rsrc_prep(phba, pmb);
6329         if (rc) {
6330                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6331                                 "2898 The mboxq prep failed\n");
6332                 goto out_free_pmb;
6333         }
6334
6335         /* Cleanup any outstanding ELS commands */
6336         lpfc_els_flush_all_cmd(phba);
6337
6338         /* Block ELS IOCBs until we have done process link event */
6339         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
6340
6341         /* Update link event statistics */
6342         phba->sli.slistat.link_event++;
6343
6344         /* Create lpfc_handle_latt mailbox command from link ACQE */
6345         lpfc_read_topology(phba, pmb, pmb->ctx_buf);
6346         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
6347         pmb->vport = phba->pport;
6348
6349         if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
6350                 phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
6351
6352                 switch (phba->sli4_hba.link_state.status) {
6353                 case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
6354                         phba->link_flag |= LS_MDS_LINK_DOWN;
6355                         break;
6356                 case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
6357                         phba->link_flag |= LS_MDS_LOOPBACK;
6358                         break;
6359                 default:
6360                         break;
6361                 }
6362
6363                 /* Initialize completion status */
6364                 mb = &pmb->u.mb;
6365                 mb->mbxStatus = MBX_SUCCESS;
6366
6367                 /* Parse port fault information field */
6368                 lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);
6369
6370                 /* Parse and translate link attention fields */
6371                 la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
6372                 la->eventTag = acqe_fc->event_tag;
6373
6374                 if (phba->sli4_hba.link_state.status ==
6375                     LPFC_FC_LA_TYPE_UNEXP_WWPN) {
6376                         bf_set(lpfc_mbx_read_top_att_type, la,
6377                                LPFC_FC_LA_TYPE_UNEXP_WWPN);
6378                 } else {
6379                         bf_set(lpfc_mbx_read_top_att_type, la,
6380                                LPFC_FC_LA_TYPE_LINK_DOWN);
6381                 }
6382                 /* Invoke the mailbox command callback function */
6383                 lpfc_mbx_cmpl_read_topology(phba, pmb);
6384
6385                 return;
6386         }
6387
6388         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
6389         if (rc == MBX_NOT_FINISHED)
6390                 goto out_free_pmb;
6391         return;
6392
6393 out_free_pmb:
6394         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
6395 }
6396
6397 /**
6398  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
6399  * @phba: pointer to lpfc hba data structure.
6400  * @acqe_sli: pointer to the async SLI completion queue entry.
6401  *
6402  * This routine is to handle the SLI4 asynchronous SLI events.
6403  **/
6404 static void
6405 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
6406 {
6407         char port_name;
6408         char message[128];
6409         uint8_t status;
6410         uint8_t evt_type;
6411         uint8_t operational = 0;
6412         struct temp_event temp_event_data;
6413         struct lpfc_acqe_misconfigured_event *misconfigured;
6414         struct lpfc_acqe_cgn_signal *cgn_signal;
6415         struct Scsi_Host  *shost;
6416         struct lpfc_vport **vports;
6417         int rc, i, cnt;
6418
6419         evt_type = bf_get(lpfc_trailer_type, acqe_sli);
6420
6421         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6422                         "2901 Async SLI event - Type:%d, Event Data: x%08x "
6423                         "x%08x x%08x x%08x\n", evt_type,
6424                         acqe_sli->event_data1, acqe_sli->event_data2,
6425                         acqe_sli->event_data3, acqe_sli->trailer);
6426
6427         port_name = phba->Port[0];
6428         if (port_name == 0x00)
6429                 port_name = '?'; /* get port name is empty */
6430
6431         switch (evt_type) {
6432         case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
6433                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
6434                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
6435                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
6436
6437                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
6438                                 "3190 Over Temperature:%d Celsius- Port Name %c\n",
6439                                 acqe_sli->event_data1, port_name);
6440
6441                 phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
6442                 shost = lpfc_shost_from_vport(phba->pport);
6443                 fc_host_post_vendor_event(shost, fc_get_event_number(),
6444                                           sizeof(temp_event_data),
6445                                           (char *)&temp_event_data,
6446                                           SCSI_NL_VID_TYPE_PCI
6447                                           | PCI_VENDOR_ID_EMULEX);
6448                 break;
6449         case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
6450                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
6451                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
6452                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
6453
6454                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI | LOG_LDS_EVENT,
6455                                 "3191 Normal Temperature:%d Celsius - Port Name %c\n",
6456                                 acqe_sli->event_data1, port_name);
6457
6458                 shost = lpfc_shost_from_vport(phba->pport);
6459                 fc_host_post_vendor_event(shost, fc_get_event_number(),
6460                                           sizeof(temp_event_data),
6461                                           (char *)&temp_event_data,
6462                                           SCSI_NL_VID_TYPE_PCI
6463                                           | PCI_VENDOR_ID_EMULEX);
6464                 break;
6465         case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
6466                 misconfigured = (struct lpfc_acqe_misconfigured_event *)
6467                                         &acqe_sli->event_data1;
6468
6469                 /* fetch the status for this port */
6470                 switch (phba->sli4_hba.lnk_info.lnk_no) {
6471                 case LPFC_LINK_NUMBER_0:
6472                         status = bf_get(lpfc_sli_misconfigured_port0_state,
6473                                         &misconfigured->theEvent);
6474                         operational = bf_get(lpfc_sli_misconfigured_port0_op,
6475                                         &misconfigured->theEvent);
6476                         break;
6477                 case LPFC_LINK_NUMBER_1:
6478                         status = bf_get(lpfc_sli_misconfigured_port1_state,
6479                                         &misconfigured->theEvent);
6480                         operational = bf_get(lpfc_sli_misconfigured_port1_op,
6481                                         &misconfigured->theEvent);
6482                         break;
6483                 case LPFC_LINK_NUMBER_2:
6484                         status = bf_get(lpfc_sli_misconfigured_port2_state,
6485                                         &misconfigured->theEvent);
6486                         operational = bf_get(lpfc_sli_misconfigured_port2_op,
6487                                         &misconfigured->theEvent);
6488                         break;
6489                 case LPFC_LINK_NUMBER_3:
6490                         status = bf_get(lpfc_sli_misconfigured_port3_state,
6491                                         &misconfigured->theEvent);
6492                         operational = bf_get(lpfc_sli_misconfigured_port3_op,
6493                                         &misconfigured->theEvent);
6494                         break;
6495                 default:
6496                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6497                                         "3296 "
6498                                         "LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
6499                                         "event: Invalid link %d",
6500                                         phba->sli4_hba.lnk_info.lnk_no);
6501                         return;
6502                 }
6503
6504                 /* Skip if optic state unchanged */
6505                 if (phba->sli4_hba.lnk_info.optic_state == status)
6506                         return;
6507
6508                 switch (status) {
6509                 case LPFC_SLI_EVENT_STATUS_VALID:
6510                         sprintf(message, "Physical Link is functional");
6511                         break;
6512                 case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
6513                         sprintf(message, "Optics faulted/incorrectly "
6514                                 "installed/not installed - Reseat optics, "
6515                                 "if issue not resolved, replace.");
6516                         break;
6517                 case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
6518                         sprintf(message,
6519                                 "Optics of two types installed - Remove one "
6520                                 "optic or install matching pair of optics.");
6521                         break;
6522                 case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
6523                         sprintf(message, "Incompatible optics - Replace with "
6524                                 "compatible optics for card to function.");
6525                         break;
6526                 case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
6527                         sprintf(message, "Unqualified optics - Replace with "
6528                                 "Avago optics for Warranty and Technical "
6529                                 "Support - Link is%s operational",
6530                                 (operational) ? " not" : "");
6531                         break;
6532                 case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
6533                         sprintf(message, "Uncertified optics - Replace with "
6534                                 "Avago-certified optics to enable link "
6535                                 "operation - Link is%s operational",
6536                                 (operational) ? " not" : "");
6537                         break;
6538                 default:
6539                         /* firmware is reporting a status we don't know about */
6540                         sprintf(message, "Unknown event status x%02x", status);
6541                         break;
6542                 }
6543
6544                 /* Issue READ_CONFIG mbox command to refresh supported speeds */
6545                 rc = lpfc_sli4_read_config(phba);
6546                 if (rc) {
6547                         phba->lmt = 0;
6548                         lpfc_printf_log(phba, KERN_ERR,
6549                                         LOG_TRACE_EVENT,
6550                                         "3194 Unable to retrieve supported "
6551                                         "speeds, rc = 0x%x\n", rc);
6552                 }
6553                 rc = lpfc_sli4_refresh_params(phba);
6554                 if (rc) {
6555                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6556                                         "3174 Unable to update pls support, "
6557                                         "rc x%x\n", rc);
6558                 }
6559                 vports = lpfc_create_vport_work_array(phba);
6560                 if (vports != NULL) {
6561                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
6562                                         i++) {
6563                                 shost = lpfc_shost_from_vport(vports[i]);
6564                                 lpfc_host_supported_speeds_set(shost);
6565                         }
6566                 }
6567                 lpfc_destroy_vport_work_array(phba, vports);
6568
6569                 phba->sli4_hba.lnk_info.optic_state = status;
6570                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6571                                 "3176 Port Name %c %s\n", port_name, message);
6572                 break;
6573         case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
6574                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6575                                 "3192 Remote DPort Test Initiated - "
6576                                 "Event Data1:x%08x Event Data2: x%08x\n",
6577                                 acqe_sli->event_data1, acqe_sli->event_data2);
6578                 break;
6579         case LPFC_SLI_EVENT_TYPE_PORT_PARAMS_CHG:
6580                 /* Call FW to obtain active parms */
6581                 lpfc_sli4_cgn_parm_chg_evt(phba);
6582                 break;
6583         case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN:
6584                 /* Misconfigured WWN. Reports that the SLI Port is configured
6585                  * to use FA-WWN, but the attached device doesn’t support it.
6586                  * Event Data1 - N.A, Event Data2 - N.A
6587                  * This event only happens on the physical port.
6588                  */
6589                 lpfc_log_msg(phba, KERN_WARNING, LOG_SLI | LOG_DISCOVERY,
6590                              "2699 Misconfigured FA-PWWN - Attached device "
6591                              "does not support FA-PWWN\n");
6592                 phba->sli4_hba.fawwpn_flag &= ~LPFC_FAWWPN_FABRIC;
6593                 memset(phba->pport->fc_portname.u.wwn, 0,
6594                        sizeof(struct lpfc_name));
6595                 break;
6596         case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE:
6597                 /* EEPROM failure. No driver action is required */
6598                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
6599                              "2518 EEPROM failure - "
6600                              "Event Data1: x%08x Event Data2: x%08x\n",
6601                              acqe_sli->event_data1, acqe_sli->event_data2);
6602                 break;
6603         case LPFC_SLI_EVENT_TYPE_CGN_SIGNAL:
6604                 if (phba->cmf_active_mode == LPFC_CFG_OFF)
6605                         break;
6606                 cgn_signal = (struct lpfc_acqe_cgn_signal *)
6607                                         &acqe_sli->event_data1;
6608                 phba->cgn_acqe_cnt++;
6609
6610                 cnt = bf_get(lpfc_warn_acqe, cgn_signal);
6611                 atomic64_add(cnt, &phba->cgn_acqe_stat.warn);
6612                 atomic64_add(cgn_signal->alarm_cnt, &phba->cgn_acqe_stat.alarm);
6613
6614                 /* no threshold for CMF, even 1 signal will trigger an event */
6615
6616                 /* Alarm overrides warning, so check that first */
6617                 if (cgn_signal->alarm_cnt) {
6618                         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
6619                                 /* Keep track of alarm cnt for CMF_SYNC_WQE */
6620                                 atomic_add(cgn_signal->alarm_cnt,
6621                                            &phba->cgn_sync_alarm_cnt);
6622                         }
6623                 } else if (cnt) {
6624                         /* signal action needs to be taken */
6625                         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
6626                             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
6627                                 /* Keep track of warning cnt for CMF_SYNC_WQE */
6628                                 atomic_add(cnt, &phba->cgn_sync_warn_cnt);
6629                         }
6630                 }
6631                 break;
6632         case LPFC_SLI_EVENT_TYPE_RD_SIGNAL:
6633                 /* May be accompanied by a temperature event */
6634                 lpfc_printf_log(phba, KERN_INFO,
6635                                 LOG_SLI | LOG_LINK_EVENT | LOG_LDS_EVENT,
6636                                 "2902 Remote Degrade Signaling: x%08x x%08x "
6637                                 "x%08x\n",
6638                                 acqe_sli->event_data1, acqe_sli->event_data2,
6639                                 acqe_sli->event_data3);
6640                 break;
6641         case LPFC_SLI_EVENT_TYPE_RESET_CM_STATS:
6642                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
6643                                 "2905 Reset CM statistics\n");
6644                 lpfc_sli4_async_cmstat_evt(phba);
6645                 break;
6646         default:
6647                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6648                                 "3193 Unrecognized SLI event, type: 0x%x",
6649                                 evt_type);
6650                 break;
6651         }
6652 }
6653
6654 /**
6655  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
6656  * @vport: pointer to vport data structure.
6657  *
6658  * This routine is to perform Clear Virtual Link (CVL) on a vport in
6659  * response to a CVL event.
6660  *
6661  * Return the pointer to the ndlp with the vport if successful, otherwise
6662  * return NULL.
6663  **/
6664 static struct lpfc_nodelist *
6665 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
6666 {
6667         struct lpfc_nodelist *ndlp;
6668         struct Scsi_Host *shost;
6669         struct lpfc_hba *phba;
6670
6671         if (!vport)
6672                 return NULL;
6673         phba = vport->phba;
6674         if (!phba)
6675                 return NULL;
6676         ndlp = lpfc_findnode_did(vport, Fabric_DID);
6677         if (!ndlp) {
6678                 /* Cannot find existing Fabric ndlp, so allocate a new one */
6679                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
6680                 if (!ndlp)
6681                         return NULL;
6682                 /* Set the node type */
6683                 ndlp->nlp_type |= NLP_FABRIC;
6684                 /* Put ndlp onto node list */
6685                 lpfc_enqueue_node(vport, ndlp);
6686         }
6687         if ((phba->pport->port_state < LPFC_FLOGI) &&
6688                 (phba->pport->port_state != LPFC_VPORT_FAILED))
6689                 return NULL;
6690         /* If virtual link is not yet instantiated ignore CVL */
6691         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
6692                 && (vport->port_state != LPFC_VPORT_FAILED))
6693                 return NULL;
6694         shost = lpfc_shost_from_vport(vport);
6695         if (!shost)
6696                 return NULL;
6697         lpfc_linkdown_port(vport);
6698         lpfc_cleanup_pending_mbox(vport);
6699         set_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
6700
6701         return ndlp;
6702 }
6703
6704 /**
6705  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
6706  * @phba: pointer to lpfc hba data structure.
6707  *
6708  * This routine is to perform Clear Virtual Link (CVL) on all vports in
6709  * response to a FCF dead event.
6710  **/
6711 static void
6712 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
6713 {
6714         struct lpfc_vport **vports;
6715         int i;
6716
6717         vports = lpfc_create_vport_work_array(phba);
6718         if (vports)
6719                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
6720                         lpfc_sli4_perform_vport_cvl(vports[i]);
6721         lpfc_destroy_vport_work_array(phba, vports);
6722 }
6723
6724 /**
6725  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
6726  * @phba: pointer to lpfc hba data structure.
6727  * @acqe_fip: pointer to the async fcoe completion queue entry.
6728  *
6729  * This routine is to handle the SLI4 asynchronous fcoe event.
6730  **/
6731 static void
6732 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
6733                         struct lpfc_acqe_fip *acqe_fip)
6734 {
6735         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
6736         int rc;
6737         struct lpfc_vport *vport;
6738         struct lpfc_nodelist *ndlp;
6739         int active_vlink_present;
6740         struct lpfc_vport **vports;
6741         int i;
6742
6743         phba->fc_eventTag = acqe_fip->event_tag;
6744         phba->fcoe_eventtag = acqe_fip->event_tag;
6745         switch (event_type) {
6746         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
6747         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
6748                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
6749                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6750                                         "2546 New FCF event, evt_tag:x%x, "
6751                                         "index:x%x\n",
6752                                         acqe_fip->event_tag,
6753                                         acqe_fip->index);
6754                 else
6755                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
6756                                         LOG_DISCOVERY,
6757                                         "2788 FCF param modified event, "
6758                                         "evt_tag:x%x, index:x%x\n",
6759                                         acqe_fip->event_tag,
6760                                         acqe_fip->index);
6761                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
6762                         /*
6763                          * During period of FCF discovery, read the FCF
6764                          * table record indexed by the event to update
6765                          * FCF roundrobin failover eligible FCF bmask.
6766                          */
6767                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
6768                                         LOG_DISCOVERY,
6769                                         "2779 Read FCF (x%x) for updating "
6770                                         "roundrobin FCF failover bmask\n",
6771                                         acqe_fip->index);
6772                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
6773                 }
6774
6775                 /* If the FCF discovery is in progress, do nothing. */
6776                 if (test_bit(FCF_TS_INPROG, &phba->hba_flag))
6777                         break;
6778                 spin_lock_irq(&phba->hbalock);
6779                 /* If fast FCF failover rescan event is pending, do nothing */
6780                 if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
6781                         spin_unlock_irq(&phba->hbalock);
6782                         break;
6783                 }
6784
6785                 /* If the FCF has been in discovered state, do nothing. */
6786                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
6787                         spin_unlock_irq(&phba->hbalock);
6788                         break;
6789                 }
6790                 spin_unlock_irq(&phba->hbalock);
6791
6792                 /* Otherwise, scan the entire FCF table and re-discover SAN */
6793                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
6794                                 "2770 Start FCF table scan per async FCF "
6795                                 "event, evt_tag:x%x, index:x%x\n",
6796                                 acqe_fip->event_tag, acqe_fip->index);
6797                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
6798                                                      LPFC_FCOE_FCF_GET_FIRST);
6799                 if (rc)
6800                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6801                                         "2547 Issue FCF scan read FCF mailbox "
6802                                         "command failed (x%x)\n", rc);
6803                 break;
6804
6805         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
6806                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6807                                 "2548 FCF Table full count 0x%x tag 0x%x\n",
6808                                 bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
6809                                 acqe_fip->event_tag);
6810                 break;
6811
6812         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
6813                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
6814                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6815                                 "2549 FCF (x%x) disconnected from network, "
6816                                  "tag:x%x\n", acqe_fip->index,
6817                                  acqe_fip->event_tag);
6818                 /*
6819                  * If we are in the middle of FCF failover process, clear
6820                  * the corresponding FCF bit in the roundrobin bitmap.
6821                  */
6822                 spin_lock_irq(&phba->hbalock);
6823                 if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
6824                     (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
6825                         spin_unlock_irq(&phba->hbalock);
6826                         /* Update FLOGI FCF failover eligible FCF bmask */
6827                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
6828                         break;
6829                 }
6830                 spin_unlock_irq(&phba->hbalock);
6831
6832                 /* If the event is not for currently used fcf do nothing */
6833                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
6834                         break;
6835
6836                 /*
6837                  * Otherwise, request the port to rediscover the entire FCF
6838                  * table for a fast recovery from case that the current FCF
6839                  * is no longer valid as we are not in the middle of FCF
6840                  * failover process already.
6841                  */
6842                 spin_lock_irq(&phba->hbalock);
6843                 /* Mark the fast failover process in progress */
6844                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
6845                 spin_unlock_irq(&phba->hbalock);
6846
6847                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
6848                                 "2771 Start FCF fast failover process due to "
6849                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
6850                                 "\n", acqe_fip->event_tag, acqe_fip->index);
6851                 rc = lpfc_sli4_redisc_fcf_table(phba);
6852                 if (rc) {
6853                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
6854                                         LOG_TRACE_EVENT,
6855                                         "2772 Issue FCF rediscover mailbox "
6856                                         "command failed, fail through to FCF "
6857                                         "dead event\n");
6858                         spin_lock_irq(&phba->hbalock);
6859                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
6860                         spin_unlock_irq(&phba->hbalock);
6861                         /*
6862                          * Last resort will fail over by treating this
6863                          * as a link down to FCF registration.
6864                          */
6865                         lpfc_sli4_fcf_dead_failthrough(phba);
6866                 } else {
6867                         /* Reset FCF roundrobin bmask for new discovery */
6868                         lpfc_sli4_clear_fcf_rr_bmask(phba);
6869                         /*
6870                          * Handling fast FCF failover to a DEAD FCF event is
6871                          * considered equalivant to receiving CVL to all vports.
6872                          */
6873                         lpfc_sli4_perform_all_vport_cvl(phba);
6874                 }
6875                 break;
6876         case LPFC_FIP_EVENT_TYPE_CVL:
6877                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
6878                 lpfc_printf_log(phba, KERN_ERR,
6879                                 LOG_TRACE_EVENT,
6880                         "2718 Clear Virtual Link Received for VPI 0x%x"
6881                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
6882
6883                 vport = lpfc_find_vport_by_vpid(phba,
6884                                                 acqe_fip->index);
6885                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
6886                 if (!ndlp)
6887                         break;
6888                 active_vlink_present = 0;
6889
6890                 vports = lpfc_create_vport_work_array(phba);
6891                 if (vports) {
6892                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
6893                                         i++) {
6894                                 if (!test_bit(FC_VPORT_CVL_RCVD,
6895                                               &vports[i]->fc_flag) &&
6896                                     vports[i]->port_state > LPFC_FDISC) {
6897                                         active_vlink_present = 1;
6898                                         break;
6899                                 }
6900                         }
6901                         lpfc_destroy_vport_work_array(phba, vports);
6902                 }
6903
6904                 /*
6905                  * Don't re-instantiate if vport is marked for deletion.
6906                  * If we are here first then vport_delete is going to wait
6907                  * for discovery to complete.
6908                  */
6909                 if (!test_bit(FC_UNLOADING, &vport->load_flag) &&
6910                     active_vlink_present) {
6911                         /*
6912                          * If there are other active VLinks present,
6913                          * re-instantiate the Vlink using FDISC.
6914                          */
6915                         mod_timer(&ndlp->nlp_delayfunc,
6916                                   jiffies + secs_to_jiffies(1));
6917                         set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
6918                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
6919                         vport->port_state = LPFC_FDISC;
6920                 } else {
6921                         /*
6922                          * Otherwise, we request port to rediscover
6923                          * the entire FCF table for a fast recovery
6924                          * from possible case that the current FCF
6925                          * is no longer valid if we are not already
6926                          * in the FCF failover process.
6927                          */
6928                         spin_lock_irq(&phba->hbalock);
6929                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
6930                                 spin_unlock_irq(&phba->hbalock);
6931                                 break;
6932                         }
6933                         /* Mark the fast failover process in progress */
6934                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
6935                         spin_unlock_irq(&phba->hbalock);
6936                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
6937                                         LOG_DISCOVERY,
6938                                         "2773 Start FCF failover per CVL, "
6939                                         "evt_tag:x%x\n", acqe_fip->event_tag);
6940                         rc = lpfc_sli4_redisc_fcf_table(phba);
6941                         if (rc) {
6942                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
6943                                                 LOG_TRACE_EVENT,
6944                                                 "2774 Issue FCF rediscover "
6945                                                 "mailbox command failed, "
6946                                                 "through to CVL event\n");
6947                                 spin_lock_irq(&phba->hbalock);
6948                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
6949                                 spin_unlock_irq(&phba->hbalock);
6950                                 /*
6951                                  * Last resort will be re-try on the
6952                                  * the current registered FCF entry.
6953                                  */
6954                                 lpfc_retry_pport_discovery(phba);
6955                         } else
6956                                 /*
6957                                  * Reset FCF roundrobin bmask for new
6958                                  * discovery.
6959                                  */
6960                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
6961                 }
6962                 break;
6963         default:
6964                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6965                                 "0288 Unknown FCoE event type 0x%x event tag "
6966                                 "0x%x\n", event_type, acqe_fip->event_tag);
6967                 break;
6968         }
6969 }
6970
6971 /**
6972  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
6973  * @phba: pointer to lpfc hba data structure.
6974  * @acqe_dcbx: pointer to the async dcbx completion queue entry.
6975  *
6976  * This routine is to handle the SLI4 asynchronous dcbx event.
6977  **/
6978 static void
6979 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
6980                          struct lpfc_acqe_dcbx *acqe_dcbx)
6981 {
6982         phba->fc_eventTag = acqe_dcbx->event_tag;
6983         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6984                         "0290 The SLI4 DCBX asynchronous event is not "
6985                         "handled yet\n");
6986 }
6987
6988 /**
6989  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
6990  * @phba: pointer to lpfc hba data structure.
6991  * @acqe_grp5: pointer to the async grp5 completion queue entry.
6992  *
6993  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
6994  * is an asynchronous notified of a logical link speed change.  The Port
6995  * reports the logical link speed in units of 10Mbps.
6996  **/
6997 static void
6998 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
6999                          struct lpfc_acqe_grp5 *acqe_grp5)
7000 {
7001         uint16_t prev_ll_spd;
7002
7003         phba->fc_eventTag = acqe_grp5->event_tag;
7004         phba->fcoe_eventtag = acqe_grp5->event_tag;
7005         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
7006         phba->sli4_hba.link_state.logical_speed =
7007                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
7008         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
7009                         "2789 GRP5 Async Event: Updating logical link speed "
7010                         "from %dMbps to %dMbps\n", prev_ll_spd,
7011                         phba->sli4_hba.link_state.logical_speed);
7012 }
7013
7014 /**
7015  * lpfc_sli4_async_cmstat_evt - Process the asynchronous cmstat event
7016  * @phba: pointer to lpfc hba data structure.
7017  *
7018  * This routine is to handle the SLI4 asynchronous cmstat event. A cmstat event
7019  * is an asynchronous notification of a request to reset CM stats.
7020  **/
7021 static void
7022 lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba)
7023 {
7024         if (!phba->cgn_i)
7025                 return;
7026         lpfc_init_congestion_stat(phba);
7027 }
7028
7029 /**
7030  * lpfc_cgn_params_val - Validate FW congestion parameters.
7031  * @phba: pointer to lpfc hba data structure.
7032  * @p_cfg_param: pointer to FW provided congestion parameters.
7033  *
7034  * This routine validates the congestion parameters passed
7035  * by the FW to the driver via an ACQE event.
7036  **/
7037 static void
7038 lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param)
7039 {
7040         spin_lock_irq(&phba->hbalock);
7041
7042         if (!lpfc_rangecheck(p_cfg_param->cgn_param_mode, LPFC_CFG_OFF,
7043                              LPFC_CFG_MONITOR)) {
7044                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
7045                                 "6225 CMF mode param out of range: %d\n",
7046                                  p_cfg_param->cgn_param_mode);
7047                 p_cfg_param->cgn_param_mode = LPFC_CFG_OFF;
7048         }
7049
7050         spin_unlock_irq(&phba->hbalock);
7051 }
7052
7053 static const char * const lpfc_cmf_mode_to_str[] = {
7054         "OFF",
7055         "MANAGED",
7056         "MONITOR",
7057 };
7058
7059 /**
7060  * lpfc_cgn_params_parse - Process a FW cong parm change event
7061  * @phba: pointer to lpfc hba data structure.
7062  * @p_cgn_param: pointer to a data buffer with the FW cong params.
7063  * @len: the size of pdata in bytes.
7064  *
7065  * This routine validates the congestion management buffer signature
7066  * from the FW, validates the contents and makes corrections for
7067  * valid, in-range values.  If the signature magic is correct and
7068  * after parameter validation, the contents are copied to the driver's
7069  * @phba structure. If the magic is incorrect, an error message is
7070  * logged.
7071  **/
7072 static void
7073 lpfc_cgn_params_parse(struct lpfc_hba *phba,
7074                       struct lpfc_cgn_param *p_cgn_param, uint32_t len)
7075 {
7076         struct lpfc_cgn_info *cp;
7077         uint32_t crc, oldmode;
7078         char acr_string[4] = {0};
7079
7080         /* Make sure the FW has encoded the correct magic number to
7081          * validate the congestion parameter in FW memory.
7082          */
7083         if (p_cgn_param->cgn_param_magic == LPFC_CFG_PARAM_MAGIC_NUM) {
7084                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
7085                                 "4668 FW cgn parm buffer data: "
7086                                 "magic 0x%x version %d mode %d "
7087                                 "level0 %d level1 %d "
7088                                 "level2 %d byte13 %d "
7089                                 "byte14 %d byte15 %d "
7090                                 "byte11 %d byte12 %d activeMode %d\n",
7091                                 p_cgn_param->cgn_param_magic,
7092                                 p_cgn_param->cgn_param_version,
7093                                 p_cgn_param->cgn_param_mode,
7094                                 p_cgn_param->cgn_param_level0,
7095                                 p_cgn_param->cgn_param_level1,
7096                                 p_cgn_param->cgn_param_level2,
7097                                 p_cgn_param->byte13,
7098                                 p_cgn_param->byte14,
7099                                 p_cgn_param->byte15,
7100                                 p_cgn_param->byte11,
7101                                 p_cgn_param->byte12,
7102                                 phba->cmf_active_mode);
7103
7104                 oldmode = phba->cmf_active_mode;
7105
7106                 /* Any parameters out of range are corrected to defaults
7107                  * by this routine.  No need to fail.
7108                  */
7109                 lpfc_cgn_params_val(phba, p_cgn_param);
7110
7111                 /* Parameters are verified, move them into driver storage */
7112                 spin_lock_irq(&phba->hbalock);
7113                 memcpy(&phba->cgn_p, p_cgn_param,
7114                        sizeof(struct lpfc_cgn_param));
7115
7116                 /* Update parameters in congestion info buffer now */
7117                 if (phba->cgn_i) {
7118                         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
7119                         cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
7120                         cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
7121                         cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
7122                         cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
7123                         crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
7124                                                   LPFC_CGN_CRC32_SEED);
7125                         cp->cgn_info_crc = cpu_to_le32(crc);
7126                 }
7127                 spin_unlock_irq(&phba->hbalock);
7128
7129                 phba->cmf_active_mode = phba->cgn_p.cgn_param_mode;
7130
7131                 switch (oldmode) {
7132                 case LPFC_CFG_OFF:
7133                         if (phba->cgn_p.cgn_param_mode != LPFC_CFG_OFF) {
7134                                 /* Turning CMF on */
7135                                 lpfc_cmf_start(phba);
7136
7137                                 if (phba->link_state >= LPFC_LINK_UP) {
7138                                         phba->cgn_reg_fpin =
7139                                                 phba->cgn_init_reg_fpin;
7140                                         phba->cgn_reg_signal =
7141                                                 phba->cgn_init_reg_signal;
7142                                         lpfc_issue_els_edc(phba->pport, 0);
7143                                 }
7144                         }
7145                         break;
7146                 case LPFC_CFG_MANAGED:
7147                         switch (phba->cgn_p.cgn_param_mode) {
7148                         case LPFC_CFG_OFF:
7149                                 /* Turning CMF off */
7150                                 lpfc_cmf_stop(phba);
7151                                 if (phba->link_state >= LPFC_LINK_UP)
7152                                         lpfc_issue_els_edc(phba->pport, 0);
7153                                 break;
7154                         case LPFC_CFG_MONITOR:
7155                                 phba->cmf_max_bytes_per_interval =
7156                                         phba->cmf_link_byte_count;
7157
7158                                 /* Resume blocked IO - unblock on workqueue */
7159                                 queue_work(phba->wq,
7160                                            &phba->unblock_request_work);
7161                                 break;
7162                         }
7163                         break;
7164                 case LPFC_CFG_MONITOR:
7165                         switch (phba->cgn_p.cgn_param_mode) {
7166                         case LPFC_CFG_OFF:
7167                                 /* Turning CMF off */
7168                                 lpfc_cmf_stop(phba);
7169                                 if (phba->link_state >= LPFC_LINK_UP)
7170                                         lpfc_issue_els_edc(phba->pport, 0);
7171                                 break;
7172                         case LPFC_CFG_MANAGED:
7173                                 lpfc_cmf_signal_init(phba);
7174                                 break;
7175                         }
7176                         break;
7177                 }
7178                 if (oldmode != LPFC_CFG_OFF ||
7179                     oldmode != phba->cgn_p.cgn_param_mode) {
7180                         if (phba->cgn_p.cgn_param_mode == LPFC_CFG_MANAGED)
7181                                 scnprintf(acr_string, sizeof(acr_string), "%u",
7182                                           phba->cgn_p.cgn_param_level0);
7183                         else
7184                                 scnprintf(acr_string, sizeof(acr_string), "NA");
7185
7186                         dev_info(&phba->pcidev->dev, "%d: "
7187                                  "4663 CMF: Mode %s acr %s\n",
7188                                  phba->brd_no,
7189                                  lpfc_cmf_mode_to_str
7190                                  [phba->cgn_p.cgn_param_mode],
7191                                  acr_string);
7192                 }
7193         } else {
7194                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7195                                 "4669 FW cgn parm buf wrong magic 0x%x "
7196                                 "version %d\n", p_cgn_param->cgn_param_magic,
7197                                 p_cgn_param->cgn_param_version);
7198         }
7199 }
7200
7201 /**
7202  * lpfc_sli4_cgn_params_read - Read and Validate FW congestion parameters.
7203  * @phba: pointer to lpfc hba data structure.
7204  *
7205  * This routine issues a read_object mailbox command to
7206  * get the congestion management parameters from the FW
7207  * parses it and updates the driver maintained values.
7208  *
7209  * Returns
7210  *  0     if the object was empty
7211  *  -Eval if an error was encountered
7212  *  Count if bytes were read from object
7213  **/
7214 int
7215 lpfc_sli4_cgn_params_read(struct lpfc_hba *phba)
7216 {
7217         int ret = 0;
7218         struct lpfc_cgn_param *p_cgn_param = NULL;
7219         u32 *pdata = NULL;
7220         u32 len = 0;
7221
7222         /* Find out if the FW has a new set of congestion parameters. */
7223         len = sizeof(struct lpfc_cgn_param);
7224         pdata = kzalloc(len, GFP_KERNEL);
7225         if (!pdata)
7226                 return -ENOMEM;
7227         ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME,
7228                                pdata, len);
7229
7230         /* 0 means no data.  A negative means error.  A positive means
7231          * bytes were copied.
7232          */
7233         if (!ret) {
7234                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7235                                 "4670 CGN RD OBJ returns no data\n");
7236                 goto rd_obj_err;
7237         } else if (ret < 0) {
7238                 /* Some error.  Just exit and return it to the caller.*/
7239                 goto rd_obj_err;
7240         }
7241
7242         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
7243                         "6234 READ CGN PARAMS Successful %d\n", len);
7244
7245         /* Parse data pointer over len and update the phba congestion
7246          * parameters with values passed back.  The receive rate values
7247          * may have been altered in FW, but take no action here.
7248          */
7249         p_cgn_param = (struct lpfc_cgn_param *)pdata;
7250         lpfc_cgn_params_parse(phba, p_cgn_param, len);
7251
7252  rd_obj_err:
7253         kfree(pdata);
7254         return ret;
7255 }
7256
7257 /**
7258  * lpfc_sli4_cgn_parm_chg_evt - Process a FW congestion param change event
7259  * @phba: pointer to lpfc hba data structure.
7260  *
7261  * The FW generated Async ACQE SLI event calls this routine when
7262  * the event type is an SLI Internal Port Event and the Event Code
7263  * indicates a change to the FW maintained congestion parameters.
7264  *
7265  * This routine executes a Read_Object mailbox call to obtain the
7266  * current congestion parameters maintained in FW and corrects
7267  * the driver's active congestion parameters.
7268  *
7269  * The acqe event is not passed because there is no further data
7270  * required.
7271  *
7272  * Returns nonzero error if event processing encountered an error.
7273  * Zero otherwise for success.
7274  **/
7275 static int
7276 lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *phba)
7277 {
7278         int ret = 0;
7279
7280         if (!phba->sli4_hba.pc_sli4_params.cmf) {
7281                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7282                                 "4664 Cgn Evt when E2E off. Drop event\n");
7283                 return -EACCES;
7284         }
7285
7286         /* If the event is claiming an empty object, it's ok.  A write
7287          * could have cleared it.  Only error is a negative return
7288          * status.
7289          */
7290         ret = lpfc_sli4_cgn_params_read(phba);
7291         if (ret < 0) {
7292                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7293                                 "4667 Error reading Cgn Params (%d)\n",
7294                                 ret);
7295         } else if (!ret) {
7296                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7297                                 "4673 CGN Event empty object.\n");
7298         }
7299         return ret;
7300 }
7301
7302 /**
7303  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
7304  * @phba: pointer to lpfc hba data structure.
7305  *
7306  * This routine is invoked by the worker thread to process all the pending
7307  * SLI4 asynchronous events.
7308  **/
7309 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
7310 {
7311         struct lpfc_cq_event *cq_event;
7312         unsigned long iflags;
7313
7314         /* First, declare the async event has been handled */
7315         clear_bit(ASYNC_EVENT, &phba->hba_flag);
7316
7317         /* Now, handle all the async events */
7318         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
7319         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
7320                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
7321                                  cq_event, struct lpfc_cq_event, list);
7322                 spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock,
7323                                        iflags);
7324
7325                 /* Process the asynchronous event */
7326                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
7327                 case LPFC_TRAILER_CODE_LINK:
7328                         lpfc_sli4_async_link_evt(phba,
7329                                                  &cq_event->cqe.acqe_link);
7330                         break;
7331                 case LPFC_TRAILER_CODE_FCOE:
7332                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
7333                         break;
7334                 case LPFC_TRAILER_CODE_DCBX:
7335                         lpfc_sli4_async_dcbx_evt(phba,
7336                                                  &cq_event->cqe.acqe_dcbx);
7337                         break;
7338                 case LPFC_TRAILER_CODE_GRP5:
7339                         lpfc_sli4_async_grp5_evt(phba,
7340                                                  &cq_event->cqe.acqe_grp5);
7341                         break;
7342                 case LPFC_TRAILER_CODE_FC:
7343                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
7344                         break;
7345                 case LPFC_TRAILER_CODE_SLI:
7346                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
7347                         break;
7348                 default:
7349                         lpfc_printf_log(phba, KERN_ERR,
7350                                         LOG_TRACE_EVENT,
7351                                         "1804 Invalid asynchronous event code: "
7352                                         "x%x\n", bf_get(lpfc_trailer_code,
7353                                         &cq_event->cqe.mcqe_cmpl));
7354                         break;
7355                 }
7356
7357                 /* Free the completion event processed to the free pool */
7358                 lpfc_sli4_cq_event_release(phba, cq_event);
7359                 spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
7360         }
7361         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
7362 }
7363
7364 /**
7365  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
7366  * @phba: pointer to lpfc hba data structure.
7367  *
7368  * This routine is invoked by the worker thread to process FCF table
7369  * rediscovery pending completion event.
7370  **/
7371 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
7372 {
7373         int rc;
7374
7375         spin_lock_irq(&phba->hbalock);
7376         /* Clear FCF rediscovery timeout event */
7377         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
7378         /* Clear driver fast failover FCF record flag */
7379         phba->fcf.failover_rec.flag = 0;
7380         /* Set state for FCF fast failover */
7381         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
7382         spin_unlock_irq(&phba->hbalock);
7383
7384         /* Scan FCF table from the first entry to re-discover SAN */
7385         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
7386                         "2777 Start post-quiescent FCF table scan\n");
7387         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
7388         if (rc)
7389                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7390                                 "2747 Issue FCF scan read FCF mailbox "
7391                                 "command failed 0x%x\n", rc);
7392 }
7393
7394 /**
7395  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
7396  * @phba: pointer to lpfc hba data structure.
7397  * @dev_grp: The HBA PCI-Device group number.
7398  *
7399  * This routine is invoked to set up the per HBA PCI-Device group function
7400  * API jump table entries.
7401  *
7402  * Return: 0 if success, otherwise -ENODEV
7403  **/
7404 int
7405 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
7406 {
7407         int rc;
7408
7409         /* Set up lpfc PCI-device group */
7410         phba->pci_dev_grp = dev_grp;
7411
7412         /* The LPFC_PCI_DEV_OC uses SLI4 */
7413         if (dev_grp == LPFC_PCI_DEV_OC)
7414                 phba->sli_rev = LPFC_SLI_REV4;
7415
7416         /* Set up device INIT API function jump table */
7417         rc = lpfc_init_api_table_setup(phba, dev_grp);
7418         if (rc)
7419                 return -ENODEV;
7420         /* Set up SCSI API function jump table */
7421         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
7422         if (rc)
7423                 return -ENODEV;
7424         /* Set up SLI API function jump table */
7425         rc = lpfc_sli_api_table_setup(phba, dev_grp);
7426         if (rc)
7427                 return -ENODEV;
7428         /* Set up MBOX API function jump table */
7429         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
7430         if (rc)
7431                 return -ENODEV;
7432
7433         return 0;
7434 }
7435
7436 /**
7437  * lpfc_log_intr_mode - Log the active interrupt mode
7438  * @phba: pointer to lpfc hba data structure.
7439  * @intr_mode: active interrupt mode adopted.
7440  *
7441  * This routine it invoked to log the currently used active interrupt mode
7442  * to the device.
7443  **/
7444 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
7445 {
7446         switch (intr_mode) {
7447         case 0:
7448                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7449                                 "0470 Enable INTx interrupt mode.\n");
7450                 break;
7451         case 1:
7452                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7453                                 "0481 Enabled MSI interrupt mode.\n");
7454                 break;
7455         case 2:
7456                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7457                                 "0480 Enabled MSI-X interrupt mode.\n");
7458                 break;
7459         default:
7460                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7461                                 "0482 Illegal interrupt mode.\n");
7462                 break;
7463         }
7464         return;
7465 }
7466
7467 /**
7468  * lpfc_enable_pci_dev - Enable a generic PCI device.
7469  * @phba: pointer to lpfc hba data structure.
7470  *
7471  * This routine is invoked to enable the PCI device that is common to all
7472  * PCI devices.
7473  *
7474  * Return codes
7475  *      0 - successful
7476  *      other values - error
7477  **/
7478 static int
7479 lpfc_enable_pci_dev(struct lpfc_hba *phba)
7480 {
7481         struct pci_dev *pdev;
7482
7483         /* Obtain PCI device reference */
7484         if (!phba->pcidev)
7485                 goto out_error;
7486         else
7487                 pdev = phba->pcidev;
7488         /* Enable PCI device */
7489         if (pci_enable_device_mem(pdev))
7490                 goto out_error;
7491         /* Request PCI resource for the device */
7492         if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
7493                 goto out_disable_device;
7494         /* Set up device as PCI master and save state for EEH */
7495         pci_set_master(pdev);
7496         pci_try_set_mwi(pdev);
7497         pci_save_state(pdev);
7498
7499         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
7500         if (pci_is_pcie(pdev))
7501                 pdev->needs_freset = 1;
7502
7503         return 0;
7504
7505 out_disable_device:
7506         pci_disable_device(pdev);
7507 out_error:
7508         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7509                         "1401 Failed to enable pci device\n");
7510         return -ENODEV;
7511 }
7512
7513 /**
7514  * lpfc_disable_pci_dev - Disable a generic PCI device.
7515  * @phba: pointer to lpfc hba data structure.
7516  *
7517  * This routine is invoked to disable the PCI device that is common to all
7518  * PCI devices.
7519  **/
7520 static void
7521 lpfc_disable_pci_dev(struct lpfc_hba *phba)
7522 {
7523         struct pci_dev *pdev;
7524
7525         /* Obtain PCI device reference */
7526         if (!phba->pcidev)
7527                 return;
7528         else
7529                 pdev = phba->pcidev;
7530         /* Release PCI resource and disable PCI device */
7531         pci_release_mem_regions(pdev);
7532         pci_disable_device(pdev);
7533
7534         return;
7535 }
7536
7537 /**
7538  * lpfc_reset_hba - Reset a hba
7539  * @phba: pointer to lpfc hba data structure.
7540  *
7541  * This routine is invoked to reset a hba device. It brings the HBA
7542  * offline, performs a board restart, and then brings the board back
7543  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
7544  * on outstanding mailbox commands.
7545  **/
7546 void
7547 lpfc_reset_hba(struct lpfc_hba *phba)
7548 {
7549         int rc = 0;
7550
7551         /* If resets are disabled then set error state and return. */
7552         if (!phba->cfg_enable_hba_reset) {
7553                 phba->link_state = LPFC_HBA_ERROR;
7554                 return;
7555         }
7556
7557         /* If not LPFC_SLI_ACTIVE, force all IO to be flushed */
7558         if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) {
7559                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
7560         } else {
7561                 if (test_bit(MBX_TMO_ERR, &phba->bit_flags)) {
7562                         /* Perform a PCI function reset to start from clean */
7563                         rc = lpfc_pci_function_reset(phba);
7564                         lpfc_els_flush_all_cmd(phba);
7565                 }
7566                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
7567                 lpfc_sli_flush_io_rings(phba);
7568         }
7569         lpfc_offline(phba);
7570         clear_bit(MBX_TMO_ERR, &phba->bit_flags);
7571         if (unlikely(rc)) {
7572                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
7573                                 "8888 PCI function reset failed rc %x\n",
7574                                 rc);
7575         } else {
7576                 lpfc_sli_brdrestart(phba);
7577                 lpfc_online(phba);
7578                 lpfc_unblock_mgmt_io(phba);
7579         }
7580 }
7581
7582 /**
7583  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
7584  * @phba: pointer to lpfc hba data structure.
7585  *
7586  * This function enables the PCI SR-IOV virtual functions to a physical
7587  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
7588  * enable the number of virtual functions to the physical function. As
7589  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
7590  * API call does not considered as an error condition for most of the device.
7591  **/
7592 uint16_t
7593 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
7594 {
7595         struct pci_dev *pdev = phba->pcidev;
7596         uint16_t nr_virtfn;
7597         int pos;
7598
7599         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
7600         if (pos == 0)
7601                 return 0;
7602
7603         pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
7604         return nr_virtfn;
7605 }
7606
7607 /**
7608  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
7609  * @phba: pointer to lpfc hba data structure.
7610  * @nr_vfn: number of virtual functions to be enabled.
7611  *
7612  * This function enables the PCI SR-IOV virtual functions to a physical
7613  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
7614  * enable the number of virtual functions to the physical function. As
7615  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
7616  * API call does not considered as an error condition for most of the device.
7617  **/
7618 int
7619 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
7620 {
7621         struct pci_dev *pdev = phba->pcidev;
7622         uint16_t max_nr_vfn;
7623         int rc;
7624
7625         max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
7626         if (nr_vfn > max_nr_vfn) {
7627                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7628                                 "3057 Requested vfs (%d) greater than "
7629                                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
7630                 return -EINVAL;
7631         }
7632
7633         rc = pci_enable_sriov(pdev, nr_vfn);
7634         if (rc) {
7635                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7636                                 "2806 Failed to enable sriov on this device "
7637                                 "with vfn number nr_vf:%d, rc:%d\n",
7638                                 nr_vfn, rc);
7639         } else
7640                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7641                                 "2807 Successful enable sriov on this device "
7642                                 "with vfn number nr_vf:%d\n", nr_vfn);
7643         return rc;
7644 }
7645
7646 static void
7647 lpfc_unblock_requests_work(struct work_struct *work)
7648 {
7649         struct lpfc_hba *phba = container_of(work, struct lpfc_hba,
7650                                              unblock_request_work);
7651
7652         lpfc_unblock_requests(phba);
7653 }
7654
7655 /**
7656  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
7657  * @phba: pointer to lpfc hba data structure.
7658  *
7659  * This routine is invoked to set up the driver internal resources before the
7660  * device specific resource setup to support the HBA device it attached to.
7661  *
7662  * Return codes
7663  *      0 - successful
7664  *      other values - error
7665  **/
7666 static int
7667 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
7668 {
7669         struct lpfc_sli *psli = &phba->sli;
7670
7671         /*
7672          * Driver resources common to all SLI revisions
7673          */
7674         atomic_set(&phba->fast_event_count, 0);
7675         atomic_set(&phba->dbg_log_idx, 0);
7676         atomic_set(&phba->dbg_log_cnt, 0);
7677         atomic_set(&phba->dbg_log_dmping, 0);
7678         spin_lock_init(&phba->hbalock);
7679
7680         /* Initialize port_list spinlock */
7681         spin_lock_init(&phba->port_list_lock);
7682         INIT_LIST_HEAD(&phba->port_list);
7683
7684         INIT_LIST_HEAD(&phba->work_list);
7685
7686         /* Initialize the wait queue head for the kernel thread */
7687         init_waitqueue_head(&phba->work_waitq);
7688
7689         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7690                         "1403 Protocols supported %s %s %s\n",
7691                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?
7692                                 "SCSI" : " "),
7693                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?
7694                                 "NVME" : " "),
7695                         (phba->nvmet_support ? "NVMET" : " "));
7696
7697         /* ras_fwlog state */
7698         spin_lock_init(&phba->ras_fwlog_lock);
7699
7700         /* Initialize the IO buffer list used by driver for SLI3 SCSI */
7701         spin_lock_init(&phba->scsi_buf_list_get_lock);
7702         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
7703         spin_lock_init(&phba->scsi_buf_list_put_lock);
7704         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
7705
7706         /* Initialize the fabric iocb list */
7707         INIT_LIST_HEAD(&phba->fabric_iocb_list);
7708
7709         /* Initialize list to save ELS buffers */
7710         INIT_LIST_HEAD(&phba->elsbuf);
7711
7712         /* Initialize FCF connection rec list */
7713         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
7714
7715         /* Initialize OAS configuration list */
7716         spin_lock_init(&phba->devicelock);
7717         INIT_LIST_HEAD(&phba->luns);
7718
7719         /* MBOX heartbeat timer */
7720         timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);
7721         /* Fabric block timer */
7722         timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);
7723         /* EA polling mode timer */
7724         timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);
7725         /* Heartbeat timer */
7726         timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);
7727
7728         INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);
7729
7730         INIT_DELAYED_WORK(&phba->idle_stat_delay_work,
7731                           lpfc_idle_stat_delay_work);
7732         INIT_WORK(&phba->unblock_request_work, lpfc_unblock_requests_work);
7733         return 0;
7734 }
7735
7736 /**
7737  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev
7738  * @phba: pointer to lpfc hba data structure.
7739  *
7740  * This routine is invoked to set up the driver internal resources specific to
7741  * support the SLI-3 HBA device it attached to.
7742  *
7743  * Return codes
7744  * 0 - successful
7745  * other values - error
7746  **/
7747 static int
7748 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
7749 {
7750         int rc, entry_sz;
7751
7752         /*
7753          * Initialize timers used by driver
7754          */
7755
7756         /* FCP polling mode timer */
7757         timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);
7758
7759         /* Host attention work mask setup */
7760         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
7761         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
7762
7763         /* Get all the module params for configuring this host */
7764         lpfc_get_cfgparam(phba);
7765         /* Set up phase-1 common device driver resources */
7766
7767         rc = lpfc_setup_driver_resource_phase1(phba);
7768         if (rc)
7769                 return -ENODEV;
7770
7771         if (!phba->sli.sli3_ring)
7772                 phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,
7773                                               sizeof(struct lpfc_sli_ring),
7774                                               GFP_KERNEL);
7775         if (!phba->sli.sli3_ring)
7776                 return -ENOMEM;
7777
7778         /*
7779          * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
7780          * used to create the sg_dma_buf_pool must be dynamically calculated.
7781          */
7782
7783         if (phba->sli_rev == LPFC_SLI_REV4)
7784                 entry_sz = sizeof(struct sli4_sge);
7785         else
7786                 entry_sz = sizeof(struct ulp_bde64);
7787
7788         /* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
7789         if (phba->cfg_enable_bg) {
7790                 /*
7791                  * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
7792                  * the FCP rsp, and a BDE for each. Sice we have no control
7793                  * over how many protection data segments the SCSI Layer
7794                  * will hand us (ie: there could be one for every block
7795                  * in the IO), we just allocate enough BDEs to accomidate
7796                  * our max amount and we need to limit lpfc_sg_seg_cnt to
7797                  * minimize the risk of running out.
7798                  */
7799                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
7800                         sizeof(struct fcp_rsp) +
7801                         (LPFC_MAX_SG_SEG_CNT * entry_sz);
7802
7803                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
7804                         phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
7805
7806                 /* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
7807                 phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
7808         } else {
7809                 /*
7810                  * The scsi_buf for a regular I/O will hold the FCP cmnd,
7811                  * the FCP rsp, a BDE for each, and a BDE for up to
7812                  * cfg_sg_seg_cnt data segments.
7813                  */
7814                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
7815                         sizeof(struct fcp_rsp) +
7816                         ((phba->cfg_sg_seg_cnt + 2) * entry_sz);
7817
7818                 /* Total BDEs in BPL for scsi_sg_list */
7819                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
7820         }
7821
7822         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
7823                         "9088 INIT sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
7824                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
7825                         phba->cfg_total_seg_cnt);
7826
7827         phba->max_vpi = LPFC_MAX_VPI;
7828         /* This will be set to correct value after config_port mbox */
7829         phba->max_vports = 0;
7830
7831         /*
7832          * Initialize the SLI Layer to run with lpfc HBAs.
7833          */
7834         lpfc_sli_setup(phba);
7835         lpfc_sli_queue_init(phba);
7836
7837         /* Allocate device driver memory */
7838         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
7839                 return -ENOMEM;
7840
7841         phba->lpfc_sg_dma_buf_pool =
7842                 dma_pool_create("lpfc_sg_dma_buf_pool",
7843                                 &phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
7844                                 BPL_ALIGN_SZ, 0);
7845
7846         if (!phba->lpfc_sg_dma_buf_pool)
7847                 goto fail_free_mem;
7848
7849         phba->lpfc_cmd_rsp_buf_pool =
7850                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
7851                                         &phba->pcidev->dev,
7852                                         sizeof(struct fcp_cmnd) +
7853                                         sizeof(struct fcp_rsp),
7854                                         BPL_ALIGN_SZ, 0);
7855
7856         if (!phba->lpfc_cmd_rsp_buf_pool)
7857                 goto fail_free_dma_buf_pool;
7858
7859         /*
7860          * Enable sr-iov virtual functions if supported and configured
7861          * through the module parameter.
7862          */
7863         if (phba->cfg_sriov_nr_virtfn > 0) {
7864                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
7865                                                  phba->cfg_sriov_nr_virtfn);
7866                 if (rc) {
7867                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7868                                         "2808 Requested number of SR-IOV "
7869                                         "virtual functions (%d) is not "
7870                                         "supported\n",
7871                                         phba->cfg_sriov_nr_virtfn);
7872                         phba->cfg_sriov_nr_virtfn = 0;
7873                 }
7874         }
7875
7876         return 0;
7877
7878 fail_free_dma_buf_pool:
7879         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
7880         phba->lpfc_sg_dma_buf_pool = NULL;
7881 fail_free_mem:
7882         lpfc_mem_free(phba);
7883         return -ENOMEM;
7884 }
7885
7886 /**
7887  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
7888  * @phba: pointer to lpfc hba data structure.
7889  *
7890  * This routine is invoked to unset the driver internal resources set up
7891  * specific for supporting the SLI-3 HBA device it attached to.
7892  **/
7893 static void
7894 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
7895 {
7896         /* Free device driver memory allocated */
7897         lpfc_mem_free_all(phba);
7898
7899         return;
7900 }
7901
7902 /**
7903  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
7904  * @phba: pointer to lpfc hba data structure.
7905  *
7906  * This routine is invoked to set up the driver internal resources specific to
7907  * support the SLI-4 HBA device it attached to.
7908  *
7909  * Return codes
7910  *      0 - successful
7911  *      other values - error
7912  **/
7913 static int
7914 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
7915 {
7916         LPFC_MBOXQ_t *mboxq;
7917         MAILBOX_t *mb;
7918         int rc, i, max_buf_size;
7919         int longs;
7920         int extra;
7921         uint64_t wwn;
7922         u32 if_type;
7923         u32 if_fam;
7924
7925         phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
7926         phba->sli4_hba.num_possible_cpu = cpumask_last(cpu_possible_mask) + 1;
7927         phba->sli4_hba.curr_disp_cpu = 0;
7928
7929         /* Get all the module params for configuring this host */
7930         lpfc_get_cfgparam(phba);
7931
7932         /* Set up phase-1 common device driver resources */
7933         rc = lpfc_setup_driver_resource_phase1(phba);
7934         if (rc)
7935                 return -ENODEV;
7936
7937         /* Before proceed, wait for POST done and device ready */
7938         rc = lpfc_sli4_post_status_check(phba);
7939         if (rc)
7940                 return -ENODEV;
7941
7942         /* Allocate all driver workqueues here */
7943
7944         /* The lpfc_wq workqueue for deferred irq use */
7945         phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
7946         if (!phba->wq)
7947                 return -ENOMEM;
7948
7949         /*
7950          * Initialize timers used by driver
7951          */
7952
7953         timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);
7954
7955         /* FCF rediscover timer */
7956         timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);
7957
7958         /* CMF congestion timer */
7959         hrtimer_setup(&phba->cmf_timer, lpfc_cmf_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
7960         /* CMF 1 minute stats collection timer */
7961         hrtimer_setup(&phba->cmf_stats_timer, lpfc_cmf_stats_timer, CLOCK_MONOTONIC,
7962                       HRTIMER_MODE_REL);
7963
7964         /*
7965          * Control structure for handling external multi-buffer mailbox
7966          * command pass-through.
7967          */
7968         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
7969                 sizeof(struct lpfc_mbox_ext_buf_ctx));
7970         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
7971
7972         phba->max_vpi = LPFC_MAX_VPI;
7973
7974         /* This will be set to correct value after the read_config mbox */
7975         phba->max_vports = 0;
7976
7977         /* Program the default value of vlan_id and fc_map */
7978         phba->valid_vlan = 0;
7979         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
7980         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
7981         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
7982
7983         /*
7984          * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
7985          * we will associate a new ring, for each EQ/CQ/WQ tuple.
7986          * The WQ create will allocate the ring.
7987          */
7988
7989         /* Initialize buffer queue management fields */
7990         INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);
7991         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
7992         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
7993
7994         /* for VMID idle timeout if VMID is enabled */
7995         if (lpfc_is_vmid_enabled(phba))
7996                 timer_setup(&phba->inactive_vmid_poll, lpfc_vmid_poll, 0);
7997
7998         /*
7999          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
8000          */
8001         /* Initialize the Abort buffer list used by driver */
8002         spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
8003         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
8004
8005         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
8006                 /* Initialize the Abort nvme buffer list used by driver */
8007                 spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
8008                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
8009                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
8010                 spin_lock_init(&phba->sli4_hba.t_active_list_lock);
8011                 INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
8012         }
8013
8014         /* This abort list used by worker thread */
8015         spin_lock_init(&phba->sli4_hba.sgl_list_lock);
8016         spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
8017         spin_lock_init(&phba->sli4_hba.asynce_list_lock);
8018         spin_lock_init(&phba->sli4_hba.els_xri_abrt_list_lock);
8019
8020         /*
8021          * Initialize driver internal slow-path work queues
8022          */
8023
8024         /* Driver internel slow-path CQ Event pool */
8025         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
8026         /* Response IOCB work queue list */
8027         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
8028         /* Asynchronous event CQ Event work queue list */
8029         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
8030         /* Slow-path XRI aborted CQ Event work queue list */
8031         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
8032         /* Receive queue CQ Event work queue list */
8033         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
8034
8035         /* Initialize extent block lists. */
8036         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
8037         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
8038         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
8039         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
8040
8041         /* Initialize mboxq lists. If the early init routines fail
8042          * these lists need to be correctly initialized.
8043          */
8044         INIT_LIST_HEAD(&phba->sli.mboxq);
8045         INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
8046
8047         /* initialize optic_state to 0xFF */
8048         phba->sli4_hba.lnk_info.optic_state = 0xff;
8049
8050         /* Allocate device driver memory */
8051         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
8052         if (rc)
8053                 goto out_destroy_workqueue;
8054
8055         /* IF Type 2 ports get initialized now. */
8056         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
8057             LPFC_SLI_INTF_IF_TYPE_2) {
8058                 rc = lpfc_pci_function_reset(phba);
8059                 if (unlikely(rc)) {
8060                         rc = -ENODEV;
8061                         goto out_free_mem;
8062                 }
8063                 phba->temp_sensor_support = 1;
8064         }
8065
8066         /* Create the bootstrap mailbox command */
8067         rc = lpfc_create_bootstrap_mbox(phba);
8068         if (unlikely(rc))
8069                 goto out_free_mem;
8070
8071         /* Set up the host's endian order with the device. */
8072         rc = lpfc_setup_endian_order(phba);
8073         if (unlikely(rc))
8074                 goto out_free_bsmbx;
8075
8076         /* Set up the hba's configuration parameters. */
8077         rc = lpfc_sli4_read_config(phba);
8078         if (unlikely(rc))
8079                 goto out_free_bsmbx;
8080
8081         if (phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
8082                 /* Right now the link is down, if FA-PWWN is configured the
8083                  * firmware will try FLOGI before the driver gets a link up.
8084                  * If it fails, the driver should get a MISCONFIGURED async
8085                  * event which will clear this flag. The only notification
8086                  * the driver gets is if it fails, if it succeeds there is no
8087                  * notification given. Assume success.
8088                  */
8089                 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
8090         }
8091
8092         rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
8093         if (unlikely(rc))
8094                 goto out_free_bsmbx;
8095
8096         /* IF Type 0 ports get initialized now. */
8097         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
8098             LPFC_SLI_INTF_IF_TYPE_0) {
8099                 rc = lpfc_pci_function_reset(phba);
8100                 if (unlikely(rc))
8101                         goto out_free_bsmbx;
8102         }
8103
8104         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
8105                                                        GFP_KERNEL);
8106         if (!mboxq) {
8107                 rc = -ENOMEM;
8108                 goto out_free_bsmbx;
8109         }
8110
8111         /* Check for NVMET being configured */
8112         phba->nvmet_support = 0;
8113         if (lpfc_enable_nvmet_cnt) {
8114
8115                 /* First get WWN of HBA instance */
8116                 lpfc_read_nv(phba, mboxq);
8117                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8118                 if (rc != MBX_SUCCESS) {
8119                         lpfc_printf_log(phba, KERN_ERR,
8120                                         LOG_TRACE_EVENT,
8121                                         "6016 Mailbox failed , mbxCmd x%x "
8122                                         "READ_NV, mbxStatus x%x\n",
8123                                         bf_get(lpfc_mqe_command, &mboxq->u.mqe),
8124                                         bf_get(lpfc_mqe_status, &mboxq->u.mqe));
8125                         mempool_free(mboxq, phba->mbox_mem_pool);
8126                         rc = -EIO;
8127                         goto out_free_bsmbx;
8128                 }
8129                 mb = &mboxq->u.mb;
8130                 memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,
8131                        sizeof(uint64_t));
8132                 wwn = cpu_to_be64(wwn);
8133                 phba->sli4_hba.wwnn.u.name = wwn;
8134                 memcpy(&wwn, (char *)mb->un.varRDnvp.portname,
8135                        sizeof(uint64_t));
8136                 /* wwn is WWPN of HBA instance */
8137                 wwn = cpu_to_be64(wwn);
8138                 phba->sli4_hba.wwpn.u.name = wwn;
8139
8140                 /* Check to see if it matches any module parameter */
8141                 for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {
8142                         if (wwn == lpfc_enable_nvmet[i]) {
8143 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
8144                                 if (lpfc_nvmet_mem_alloc(phba))
8145                                         break;
8146
8147                                 phba->nvmet_support = 1; /* a match */
8148
8149                                 lpfc_printf_log(phba, KERN_ERR,
8150                                                 LOG_TRACE_EVENT,
8151                                                 "6017 NVME Target %016llx\n",
8152                                                 wwn);
8153 #else
8154                                 lpfc_printf_log(phba, KERN_ERR,
8155                                                 LOG_TRACE_EVENT,
8156                                                 "6021 Can't enable NVME Target."
8157                                                 " NVME_TARGET_FC infrastructure"
8158                                                 " is not in kernel\n");
8159 #endif
8160                                 /* Not supported for NVMET */
8161                                 phba->cfg_xri_rebalancing = 0;
8162                                 if (phba->irq_chann_mode == NHT_MODE) {
8163                                         phba->cfg_irq_chann =
8164                                                 phba->sli4_hba.num_present_cpu;
8165                                         phba->cfg_hdw_queue =
8166                                                 phba->sli4_hba.num_present_cpu;
8167                                         phba->irq_chann_mode = NORMAL_MODE;
8168                                 }
8169                                 break;
8170                         }
8171                 }
8172         }
8173
8174         lpfc_nvme_mod_param_dep(phba);
8175
8176         /*
8177          * Get sli4 parameters that override parameters from Port capabilities.
8178          * If this call fails, it isn't critical unless the SLI4 parameters come
8179          * back in conflict.
8180          */
8181         rc = lpfc_get_sli4_parameters(phba, mboxq);
8182         if (rc) {
8183                 if_type = bf_get(lpfc_sli_intf_if_type,
8184                                  &phba->sli4_hba.sli_intf);
8185                 if_fam = bf_get(lpfc_sli_intf_sli_family,
8186                                 &phba->sli4_hba.sli_intf);
8187                 if (phba->sli4_hba.extents_in_use &&
8188                     phba->sli4_hba.rpi_hdrs_in_use) {
8189                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8190                                         "2999 Unsupported SLI4 Parameters "
8191                                         "Extents and RPI headers enabled.\n");
8192                         if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
8193                             if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {
8194                                 mempool_free(mboxq, phba->mbox_mem_pool);
8195                                 rc = -EIO;
8196                                 goto out_free_bsmbx;
8197                         }
8198                 }
8199                 if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
8200                       if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {
8201                         mempool_free(mboxq, phba->mbox_mem_pool);
8202                         rc = -EIO;
8203                         goto out_free_bsmbx;
8204                 }
8205         }
8206
8207         /*
8208          * 1 for cmd, 1 for rsp, NVME adds an extra one
8209          * for boundary conditions in its max_sgl_segment template.
8210          */
8211         extra = 2;
8212         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
8213                 extra++;
8214
8215         /*
8216          * It doesn't matter what family our adapter is in, we are
8217          * limited to 2 Pages, 512 SGEs, for our SGL.
8218          * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
8219          */
8220         max_buf_size = (2 * SLI4_PAGE_SIZE);
8221
8222         /*
8223          * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
8224          * used to create the sg_dma_buf_pool must be calculated.
8225          */
8226         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
8227                 /* Both cfg_enable_bg and cfg_external_dif code paths */
8228
8229                 /*
8230                  * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
8231                  * the FCP rsp, and a SGE. Sice we have no control
8232                  * over how many protection segments the SCSI Layer
8233                  * will hand us (ie: there could be one for every block
8234                  * in the IO), just allocate enough SGEs to accomidate
8235                  * our max amount and we need to limit lpfc_sg_seg_cnt
8236                  * to minimize the risk of running out.
8237                  */
8238                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd32) +
8239                                 sizeof(struct fcp_rsp) + max_buf_size;
8240
8241                 /* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
8242                 phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
8243
8244                 /*
8245                  * If supporting DIF, reduce the seg count for scsi to
8246                  * allow room for the DIF sges.
8247                  */
8248                 if (phba->cfg_enable_bg &&
8249                     phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
8250                         phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;
8251                 else
8252                         phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
8253
8254         } else {
8255                 /*
8256                  * The scsi_buf for a regular I/O holds the FCP cmnd,
8257                  * the FCP rsp, a SGE for each, and a SGE for up to
8258                  * cfg_sg_seg_cnt data segments.
8259                  */
8260                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd32) +
8261                                 sizeof(struct fcp_rsp) +
8262                                 ((phba->cfg_sg_seg_cnt + extra) *
8263                                 sizeof(struct sli4_sge));
8264
8265                 /* Total SGEs for scsi_sg_list */
8266                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
8267                 phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
8268
8269                 /*
8270                  * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only
8271                  * need to post 1 page for the SGL.
8272                  */
8273         }
8274
8275         if (phba->cfg_xpsgl && !phba->nvmet_support)
8276                 phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;
8277         else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
8278                 phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
8279         else
8280                 phba->cfg_sg_dma_buf_size =
8281                                 SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
8282
8283         phba->border_sge_num = phba->cfg_sg_dma_buf_size /
8284                                sizeof(struct sli4_sge);
8285
8286         /* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */
8287         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
8288                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
8289                         lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
8290                                         "6300 Reducing NVME sg segment "
8291                                         "cnt to %d\n",
8292                                         LPFC_MAX_NVME_SEG_CNT);
8293                         phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
8294                 } else
8295                         phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
8296         }
8297
8298         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
8299                         "9087 sg_seg_cnt:%d dmabuf_size:%d "
8300                         "total:%d scsi:%d nvme:%d\n",
8301                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
8302                         phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,
8303                         phba->cfg_nvme_seg_cnt);
8304
8305         if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
8306                 i = phba->cfg_sg_dma_buf_size;
8307         else
8308                 i = SLI4_PAGE_SIZE;
8309
8310         phba->lpfc_sg_dma_buf_pool =
8311                         dma_pool_create("lpfc_sg_dma_buf_pool",
8312                                         &phba->pcidev->dev,
8313                                         phba->cfg_sg_dma_buf_size,
8314                                         i, 0);
8315         if (!phba->lpfc_sg_dma_buf_pool) {
8316                 rc = -ENOMEM;
8317                 goto out_free_bsmbx;
8318         }
8319
8320         phba->lpfc_cmd_rsp_buf_pool =
8321                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
8322                                         &phba->pcidev->dev,
8323                                         sizeof(struct fcp_cmnd32) +
8324                                         sizeof(struct fcp_rsp),
8325                                         i, 0);
8326         if (!phba->lpfc_cmd_rsp_buf_pool) {
8327                 rc = -ENOMEM;
8328                 goto out_free_sg_dma_buf;
8329         }
8330
8331         mempool_free(mboxq, phba->mbox_mem_pool);
8332
8333         /* Verify OAS is supported */
8334         lpfc_sli4_oas_verify(phba);
8335
8336         /* Verify RAS support on adapter */
8337         lpfc_sli4_ras_init(phba);
8338
8339         /* Verify all the SLI4 queues */
8340         rc = lpfc_sli4_queue_verify(phba);
8341         if (rc)
8342                 goto out_free_cmd_rsp_buf;
8343
8344         /* Create driver internal CQE event pool */
8345         rc = lpfc_sli4_cq_event_pool_create(phba);
8346         if (rc)
8347                 goto out_free_cmd_rsp_buf;
8348
8349         /* Initialize sgl lists per host */
8350         lpfc_init_sgl_list(phba);
8351
8352         /* Allocate and initialize active sgl array */
8353         rc = lpfc_init_active_sgl_array(phba);
8354         if (rc) {
8355                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8356                                 "1430 Failed to initialize sgl list.\n");
8357                 goto out_destroy_cq_event_pool;
8358         }
8359         rc = lpfc_sli4_init_rpi_hdrs(phba);
8360         if (rc) {
8361                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8362                                 "1432 Failed to initialize rpi headers.\n");
8363                 goto out_free_active_sgl;
8364         }
8365
8366         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
8367         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
8368         phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),
8369                                          GFP_KERNEL);
8370         if (!phba->fcf.fcf_rr_bmask) {
8371                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8372                                 "2759 Failed allocate memory for FCF round "
8373                                 "robin failover bmask\n");
8374                 rc = -ENOMEM;
8375                 goto out_remove_rpi_hdrs;
8376         }
8377
8378         phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,
8379                                             sizeof(struct lpfc_hba_eq_hdl),
8380                                             GFP_KERNEL);
8381         if (!phba->sli4_hba.hba_eq_hdl) {
8382                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8383                                 "2572 Failed allocate memory for "
8384                                 "fast-path per-EQ handle array\n");
8385                 rc = -ENOMEM;
8386                 goto out_free_fcf_rr_bmask;
8387         }
8388
8389         phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,
8390                                         sizeof(struct lpfc_vector_map_info),
8391                                         GFP_KERNEL);
8392         if (!phba->sli4_hba.cpu_map) {
8393                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8394                                 "3327 Failed allocate memory for msi-x "
8395                                 "interrupt vector mapping\n");
8396                 rc = -ENOMEM;
8397                 goto out_free_hba_eq_hdl;
8398         }
8399
8400         phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);
8401         if (!phba->sli4_hba.eq_info) {
8402                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8403                                 "3321 Failed allocation for per_cpu stats\n");
8404                 rc = -ENOMEM;
8405                 goto out_free_hba_cpu_map;
8406         }
8407
8408         phba->sli4_hba.idle_stat = kcalloc(phba->sli4_hba.num_possible_cpu,
8409                                            sizeof(*phba->sli4_hba.idle_stat),
8410                                            GFP_KERNEL);
8411         if (!phba->sli4_hba.idle_stat) {
8412                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8413                                 "3390 Failed allocation for idle_stat\n");
8414                 rc = -ENOMEM;
8415                 goto out_free_hba_eq_info;
8416         }
8417
8418 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
8419         phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);
8420         if (!phba->sli4_hba.c_stat) {
8421                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8422                                 "3332 Failed allocating per cpu hdwq stats\n");
8423                 rc = -ENOMEM;
8424                 goto out_free_hba_idle_stat;
8425         }
8426 #endif
8427
8428         phba->cmf_stat = alloc_percpu(struct lpfc_cgn_stat);
8429         if (!phba->cmf_stat) {
8430                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8431                                 "3331 Failed allocating per cpu cgn stats\n");
8432                 rc = -ENOMEM;
8433                 goto out_free_hba_hdwq_info;
8434         }
8435
8436         /*
8437          * Enable sr-iov virtual functions if supported and configured
8438          * through the module parameter.
8439          */
8440         if (phba->cfg_sriov_nr_virtfn > 0) {
8441                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
8442                                                  phba->cfg_sriov_nr_virtfn);
8443                 if (rc) {
8444                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8445                                         "3020 Requested number of SR-IOV "
8446                                         "virtual functions (%d) is not "
8447                                         "supported\n",
8448                                         phba->cfg_sriov_nr_virtfn);
8449                         phba->cfg_sriov_nr_virtfn = 0;
8450                 }
8451         }
8452
8453         return 0;
8454
8455 out_free_hba_hdwq_info:
8456 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
8457         free_percpu(phba->sli4_hba.c_stat);
8458 out_free_hba_idle_stat:
8459 #endif
8460         kfree(phba->sli4_hba.idle_stat);
8461 out_free_hba_eq_info:
8462         free_percpu(phba->sli4_hba.eq_info);
8463 out_free_hba_cpu_map:
8464         kfree(phba->sli4_hba.cpu_map);
8465 out_free_hba_eq_hdl:
8466         kfree(phba->sli4_hba.hba_eq_hdl);
8467 out_free_fcf_rr_bmask:
8468         kfree(phba->fcf.fcf_rr_bmask);
8469 out_remove_rpi_hdrs:
8470         lpfc_sli4_remove_rpi_hdrs(phba);
8471 out_free_active_sgl:
8472         lpfc_free_active_sgl(phba);
8473 out_destroy_cq_event_pool:
8474         lpfc_sli4_cq_event_pool_destroy(phba);
8475 out_free_cmd_rsp_buf:
8476         dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
8477         phba->lpfc_cmd_rsp_buf_pool = NULL;
8478 out_free_sg_dma_buf:
8479         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
8480         phba->lpfc_sg_dma_buf_pool = NULL;
8481 out_free_bsmbx:
8482         lpfc_destroy_bootstrap_mbox(phba);
8483 out_free_mem:
8484         lpfc_mem_free(phba);
8485 out_destroy_workqueue:
8486         destroy_workqueue(phba->wq);
8487         phba->wq = NULL;
8488         return rc;
8489 }
8490
8491 /**
8492  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
8493  * @phba: pointer to lpfc hba data structure.
8494  *
8495  * This routine is invoked to unset the driver internal resources set up
8496  * specific for supporting the SLI-4 HBA device it attached to.
8497  **/
8498 static void
8499 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
8500 {
8501         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
8502
8503         free_percpu(phba->sli4_hba.eq_info);
8504 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
8505         free_percpu(phba->sli4_hba.c_stat);
8506 #endif
8507         free_percpu(phba->cmf_stat);
8508         kfree(phba->sli4_hba.idle_stat);
8509
8510         /* Free memory allocated for msi-x interrupt vector to CPU mapping */
8511         kfree(phba->sli4_hba.cpu_map);
8512         phba->sli4_hba.num_possible_cpu = 0;
8513         phba->sli4_hba.num_present_cpu = 0;
8514         phba->sli4_hba.curr_disp_cpu = 0;
8515         cpumask_clear(&phba->sli4_hba.irq_aff_mask);
8516
8517         /* Free memory allocated for fast-path work queue handles */
8518         kfree(phba->sli4_hba.hba_eq_hdl);
8519
8520         /* Free the allocated rpi headers. */
8521         lpfc_sli4_remove_rpi_hdrs(phba);
8522         lpfc_sli4_remove_rpis(phba);
8523
8524         /* Free eligible FCF index bmask */
8525         kfree(phba->fcf.fcf_rr_bmask);
8526
8527         /* Free the ELS sgl list */
8528         lpfc_free_active_sgl(phba);
8529         lpfc_free_els_sgl_list(phba);
8530         lpfc_free_nvmet_sgl_list(phba);
8531
8532         /* Free the completion queue EQ event pool */
8533         lpfc_sli4_cq_event_release_all(phba);
8534         lpfc_sli4_cq_event_pool_destroy(phba);
8535
8536         /* Release resource identifiers. */
8537         lpfc_sli4_dealloc_resource_identifiers(phba);
8538
8539         /* Free the bsmbx region. */
8540         lpfc_destroy_bootstrap_mbox(phba);
8541
8542         /* Free the SLI Layer memory with SLI4 HBAs */
8543         lpfc_mem_free_all(phba);
8544
8545         /* Free the current connect table */
8546         list_for_each_entry_safe(conn_entry, next_conn_entry,
8547                 &phba->fcf_conn_rec_list, list) {
8548                 list_del_init(&conn_entry->list);
8549                 kfree(conn_entry);
8550         }
8551
8552         return;
8553 }
8554
8555 /**
8556  * lpfc_init_api_table_setup - Set up init api function jump table
8557  * @phba: The hba struct for which this call is being executed.
8558  * @dev_grp: The HBA PCI-Device group number.
8559  *
8560  * This routine sets up the device INIT interface API function jump table
8561  * in @phba struct.
8562  *
8563  * Returns: 0 - success, -ENODEV - failure.
8564  **/
8565 int
8566 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
8567 {
8568         phba->lpfc_hba_init_link = lpfc_hba_init_link;
8569         phba->lpfc_hba_down_link = lpfc_hba_down_link;
8570         phba->lpfc_selective_reset = lpfc_selective_reset;
8571         switch (dev_grp) {
8572         case LPFC_PCI_DEV_LP:
8573                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
8574                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
8575                 phba->lpfc_stop_port = lpfc_stop_port_s3;
8576                 break;
8577         case LPFC_PCI_DEV_OC:
8578                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
8579                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
8580                 phba->lpfc_stop_port = lpfc_stop_port_s4;
8581                 break;
8582         default:
8583                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8584                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
8585                                 dev_grp);
8586                 return -ENODEV;
8587         }
8588         return 0;
8589 }
8590
8591 /**
8592  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
8593  * @phba: pointer to lpfc hba data structure.
8594  *
8595  * This routine is invoked to set up the driver internal resources after the
8596  * device specific resource setup to support the HBA device it attached to.
8597  *
8598  * Return codes
8599  *      0 - successful
8600  *      other values - error
8601  **/
8602 static int
8603 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
8604 {
8605         int error;
8606
8607         /* Startup the kernel thread for this host adapter. */
8608         phba->worker_thread = kthread_run(lpfc_do_work, phba,
8609                                           "lpfc_worker_%d", phba->brd_no);
8610         if (IS_ERR(phba->worker_thread)) {
8611                 error = PTR_ERR(phba->worker_thread);
8612                 return error;
8613         }
8614
8615         return 0;
8616 }
8617
8618 /**
8619  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
8620  * @phba: pointer to lpfc hba data structure.
8621  *
8622  * This routine is invoked to unset the driver internal resources set up after
8623  * the device specific resource setup for supporting the HBA device it
8624  * attached to.
8625  **/
8626 static void
8627 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
8628 {
8629         if (phba->wq) {
8630                 destroy_workqueue(phba->wq);
8631                 phba->wq = NULL;
8632         }
8633
8634         /* Stop kernel worker thread */
8635         if (phba->worker_thread)
8636                 kthread_stop(phba->worker_thread);
8637 }
8638
8639 /**
8640  * lpfc_free_iocb_list - Free iocb list.
8641  * @phba: pointer to lpfc hba data structure.
8642  *
8643  * This routine is invoked to free the driver's IOCB list and memory.
8644  **/
8645 void
8646 lpfc_free_iocb_list(struct lpfc_hba *phba)
8647 {
8648         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
8649
8650         spin_lock_irq(&phba->hbalock);
8651         list_for_each_entry_safe(iocbq_entry, iocbq_next,
8652                                  &phba->lpfc_iocb_list, list) {
8653                 list_del(&iocbq_entry->list);
8654                 kfree(iocbq_entry);
8655                 phba->total_iocbq_bufs--;
8656         }
8657         spin_unlock_irq(&phba->hbalock);
8658
8659         return;
8660 }
8661
8662 /**
8663  * lpfc_init_iocb_list - Allocate and initialize iocb list.
8664  * @phba: pointer to lpfc hba data structure.
8665  * @iocb_count: number of requested iocbs
8666  *
8667  * This routine is invoked to allocate and initizlize the driver's IOCB
8668  * list and set up the IOCB tag array accordingly.
8669  *
8670  * Return codes
8671  *      0 - successful
8672  *      other values - error
8673  **/
8674 int
8675 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
8676 {
8677         struct lpfc_iocbq *iocbq_entry = NULL;
8678         uint16_t iotag;
8679         int i;
8680
8681         /* Initialize and populate the iocb list per host.  */
8682         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
8683         for (i = 0; i < iocb_count; i++) {
8684                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
8685                 if (iocbq_entry == NULL) {
8686                         printk(KERN_ERR "%s: only allocated %d iocbs of "
8687                                 "expected %d count. Unloading driver.\n",
8688                                 __func__, i, iocb_count);
8689                         goto out_free_iocbq;
8690                 }
8691
8692                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
8693                 if (iotag == 0) {
8694                         kfree(iocbq_entry);
8695                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
8696                                 "Unloading driver.\n", __func__);
8697                         goto out_free_iocbq;
8698                 }
8699                 iocbq_entry->sli4_lxritag = NO_XRI;
8700                 iocbq_entry->sli4_xritag = NO_XRI;
8701
8702                 spin_lock_irq(&phba->hbalock);
8703                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
8704                 phba->total_iocbq_bufs++;
8705                 spin_unlock_irq(&phba->hbalock);
8706         }
8707
8708         return 0;
8709
8710 out_free_iocbq:
8711         lpfc_free_iocb_list(phba);
8712
8713         return -ENOMEM;
8714 }
8715
8716 /**
8717  * lpfc_free_sgl_list - Free a given sgl list.
8718  * @phba: pointer to lpfc hba data structure.
8719  * @sglq_list: pointer to the head of sgl list.
8720  *
8721  * This routine is invoked to free a give sgl list and memory.
8722  **/
8723 void
8724 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
8725 {
8726         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
8727
8728         list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
8729                 list_del(&sglq_entry->list);
8730                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
8731                 kfree(sglq_entry);
8732         }
8733 }
8734
8735 /**
8736  * lpfc_free_els_sgl_list - Free els sgl list.
8737  * @phba: pointer to lpfc hba data structure.
8738  *
8739  * This routine is invoked to free the driver's els sgl list and memory.
8740  **/
8741 static void
8742 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
8743 {
8744         LIST_HEAD(sglq_list);
8745
8746         /* Retrieve all els sgls from driver list */
8747         spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
8748         list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
8749         spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
8750
8751         /* Now free the sgl list */
8752         lpfc_free_sgl_list(phba, &sglq_list);
8753 }
8754
8755 /**
8756  * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.
8757  * @phba: pointer to lpfc hba data structure.
8758  *
8759  * This routine is invoked to free the driver's nvmet sgl list and memory.
8760  **/
8761 static void
8762 lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
8763 {
8764         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
8765         LIST_HEAD(sglq_list);
8766
8767         /* Retrieve all nvmet sgls from driver list */
8768         spin_lock_irq(&phba->hbalock);
8769         spin_lock(&phba->sli4_hba.sgl_list_lock);
8770         list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
8771         spin_unlock(&phba->sli4_hba.sgl_list_lock);
8772         spin_unlock_irq(&phba->hbalock);
8773
8774         /* Now free the sgl list */
8775         list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
8776                 list_del(&sglq_entry->list);
8777                 lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
8778                 kfree(sglq_entry);
8779         }
8780
8781         /* Update the nvmet_xri_cnt to reflect no current sgls.
8782          * The next initialization cycle sets the count and allocates
8783          * the sgls over again.
8784          */
8785         phba->sli4_hba.nvmet_xri_cnt = 0;
8786 }
8787
8788 /**
8789  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
8790  * @phba: pointer to lpfc hba data structure.
8791  *
8792  * This routine is invoked to allocate the driver's active sgl memory.
8793  * This array will hold the sglq_entry's for active IOs.
8794  **/
8795 static int
8796 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
8797 {
8798         int size;
8799         size = sizeof(struct lpfc_sglq *);
8800         size *= phba->sli4_hba.max_cfg_param.max_xri;
8801
8802         phba->sli4_hba.lpfc_sglq_active_list =
8803                 kzalloc(size, GFP_KERNEL);
8804         if (!phba->sli4_hba.lpfc_sglq_active_list)
8805                 return -ENOMEM;
8806         return 0;
8807 }
8808
8809 /**
8810  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
8811  * @phba: pointer to lpfc hba data structure.
8812  *
8813  * This routine is invoked to walk through the array of active sglq entries
8814  * and free all of the resources.
8815  * This is just a place holder for now.
8816  **/
8817 static void
8818 lpfc_free_active_sgl(struct lpfc_hba *phba)
8819 {
8820         kfree(phba->sli4_hba.lpfc_sglq_active_list);
8821 }
8822
8823 /**
8824  * lpfc_init_sgl_list - Allocate and initialize sgl list.
8825  * @phba: pointer to lpfc hba data structure.
8826  *
8827  * This routine is invoked to allocate and initizlize the driver's sgl
8828  * list and set up the sgl xritag tag array accordingly.
8829  *
8830  **/
8831 static void
8832 lpfc_init_sgl_list(struct lpfc_hba *phba)
8833 {
8834         /* Initialize and populate the sglq list per host/VF. */
8835         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
8836         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8837         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
8838         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
8839
8840         /* els xri-sgl book keeping */
8841         phba->sli4_hba.els_xri_cnt = 0;
8842
8843         /* nvme xri-buffer book keeping */
8844         phba->sli4_hba.io_xri_cnt = 0;
8845 }
8846
8847 /**
8848  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
8849  * @phba: pointer to lpfc hba data structure.
8850  *
8851  * This routine is invoked to post rpi header templates to the
8852  * port for those SLI4 ports that do not support extents.  This routine
8853  * posts a PAGE_SIZE memory region to the port to hold up to
8854  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
8855  * and should be called only when interrupts are disabled.
8856  *
8857  * Return codes
8858  *      0 - successful
8859  *      -ERROR - otherwise.
8860  **/
8861 int
8862 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
8863 {
8864         int rc = 0;
8865         struct lpfc_rpi_hdr *rpi_hdr;
8866
8867         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
8868         if (!phba->sli4_hba.rpi_hdrs_in_use)
8869                 return rc;
8870         if (phba->sli4_hba.extents_in_use)
8871                 return -EIO;
8872
8873         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
8874         if (!rpi_hdr) {
8875                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8876                                 "0391 Error during rpi post operation\n");
8877                 lpfc_sli4_remove_rpis(phba);
8878                 rc = -ENODEV;
8879         }
8880
8881         return rc;
8882 }
8883
8884 /**
8885  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
8886  * @phba: pointer to lpfc hba data structure.
8887  *
8888  * This routine is invoked to allocate a single 4KB memory region to
8889  * support rpis and stores them in the phba.  This single region
8890  * provides support for up to 64 rpis.  The region is used globally
8891  * by the device.
8892  *
8893  * Returns:
8894  *   A valid rpi hdr on success.
8895  *   A NULL pointer on any failure.
8896  **/
8897 struct lpfc_rpi_hdr *
8898 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
8899 {
8900         uint16_t rpi_limit, curr_rpi_range;
8901         struct lpfc_dmabuf *dmabuf;
8902         struct lpfc_rpi_hdr *rpi_hdr;
8903
8904         /*
8905          * If the SLI4 port supports extents, posting the rpi header isn't
8906          * required.  Set the expected maximum count and let the actual value
8907          * get set when extents are fully allocated.
8908          */
8909         if (!phba->sli4_hba.rpi_hdrs_in_use)
8910                 return NULL;
8911         if (phba->sli4_hba.extents_in_use)
8912                 return NULL;
8913
8914         /* The limit on the logical index is just the max_rpi count. */
8915         rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;
8916
8917         spin_lock_irq(&phba->hbalock);
8918         /*
8919          * Establish the starting RPI in this header block.  The starting
8920          * rpi is normalized to a zero base because the physical rpi is
8921          * port based.
8922          */
8923         curr_rpi_range = phba->sli4_hba.next_rpi;
8924         spin_unlock_irq(&phba->hbalock);
8925
8926         /* Reached full RPI range */
8927         if (curr_rpi_range == rpi_limit)
8928                 return NULL;
8929
8930         /*
8931          * First allocate the protocol header region for the port.  The
8932          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
8933          */
8934         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
8935         if (!dmabuf)
8936                 return NULL;
8937
8938         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
8939                                           LPFC_HDR_TEMPLATE_SIZE,
8940                                           &dmabuf->phys, GFP_KERNEL);
8941         if (!dmabuf->virt) {
8942                 rpi_hdr = NULL;
8943                 goto err_free_dmabuf;
8944         }
8945
8946         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
8947                 rpi_hdr = NULL;
8948                 goto err_free_coherent;
8949         }
8950
8951         /* Save the rpi header data for cleanup later. */
8952         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
8953         if (!rpi_hdr)
8954                 goto err_free_coherent;
8955
8956         rpi_hdr->dmabuf = dmabuf;
8957         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
8958         rpi_hdr->page_count = 1;
8959         spin_lock_irq(&phba->hbalock);
8960
8961         /* The rpi_hdr stores the logical index only. */
8962         rpi_hdr->start_rpi = curr_rpi_range;
8963         rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;
8964         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
8965
8966         spin_unlock_irq(&phba->hbalock);
8967         return rpi_hdr;
8968
8969  err_free_coherent:
8970         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
8971                           dmabuf->virt, dmabuf->phys);
8972  err_free_dmabuf:
8973         kfree(dmabuf);
8974         return NULL;
8975 }
8976
8977 /**
8978  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
8979  * @phba: pointer to lpfc hba data structure.
8980  *
8981  * This routine is invoked to remove all memory resources allocated
8982  * to support rpis for SLI4 ports not supporting extents. This routine
8983  * presumes the caller has released all rpis consumed by fabric or port
8984  * logins and is prepared to have the header pages removed.
8985  **/
8986 void
8987 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
8988 {
8989         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
8990
8991         if (!phba->sli4_hba.rpi_hdrs_in_use)
8992                 goto exit;
8993
8994         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
8995                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
8996                 list_del(&rpi_hdr->list);
8997                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
8998                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
8999                 kfree(rpi_hdr->dmabuf);
9000                 kfree(rpi_hdr);
9001         }
9002  exit:
9003         /* There are no rpis available to the port now. */
9004         phba->sli4_hba.next_rpi = 0;
9005 }
9006
9007 /**
9008  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
9009  * @pdev: pointer to pci device data structure.
9010  *
9011  * This routine is invoked to allocate the driver hba data structure for an
9012  * HBA device. If the allocation is successful, the phba reference to the
9013  * PCI device data structure is set.
9014  *
9015  * Return codes
9016  *      pointer to @phba - successful
9017  *      NULL - error
9018  **/
9019 static struct lpfc_hba *
9020 lpfc_hba_alloc(struct pci_dev *pdev)
9021 {
9022         struct lpfc_hba *phba;
9023
9024         /* Allocate memory for HBA structure */
9025         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
9026         if (!phba) {
9027                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
9028                 return NULL;
9029         }
9030
9031         /* Set reference to PCI device in HBA structure */
9032         phba->pcidev = pdev;
9033
9034         /* Assign an unused board number */
9035         phba->brd_no = lpfc_get_instance();
9036         if (phba->brd_no < 0) {
9037                 kfree(phba);
9038                 return NULL;
9039         }
9040         phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
9041
9042         spin_lock_init(&phba->ct_ev_lock);
9043         INIT_LIST_HEAD(&phba->ct_ev_waiters);
9044
9045         return phba;
9046 }
9047
9048 /**
9049  * lpfc_hba_free - Free driver hba data structure with a device.
9050  * @phba: pointer to lpfc hba data structure.
9051  *
9052  * This routine is invoked to free the driver hba data structure with an
9053  * HBA device.
9054  **/
9055 static void
9056 lpfc_hba_free(struct lpfc_hba *phba)
9057 {
9058         if (phba->sli_rev == LPFC_SLI_REV4)
9059                 kfree(phba->sli4_hba.hdwq);
9060
9061         /* Release the driver assigned board number */
9062         idr_remove(&lpfc_hba_index, phba->brd_no);
9063
9064         /* Free memory allocated with sli3 rings */
9065         kfree(phba->sli.sli3_ring);
9066         phba->sli.sli3_ring = NULL;
9067
9068         kfree(phba);
9069         return;
9070 }
9071
9072 /**
9073  * lpfc_setup_fdmi_mask - Setup initial FDMI mask for HBA and Port attributes
9074  * @vport: pointer to lpfc vport data structure.
9075  *
9076  * This routine is will setup initial FDMI attribute masks for
9077  * FDMI2 or SmartSAN depending on module parameters. The driver will attempt
9078  * to get these attributes first before falling back, the attribute
9079  * fallback hierarchy is SmartSAN -> FDMI2 -> FMDI1
9080  **/
9081 void
9082 lpfc_setup_fdmi_mask(struct lpfc_vport *vport)
9083 {
9084         struct lpfc_hba *phba = vport->phba;
9085
9086         set_bit(FC_ALLOW_FDMI, &vport->load_flag);
9087         if (phba->cfg_enable_SmartSAN ||
9088             phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT) {
9089                 /* Setup appropriate attribute masks */
9090                 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
9091                 if (phba->cfg_enable_SmartSAN)
9092                         vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
9093                 else
9094                         vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
9095         }
9096
9097         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
9098                         "6077 Setup FDMI mask: hba x%x port x%x\n",
9099                         vport->fdmi_hba_mask, vport->fdmi_port_mask);
9100 }
9101
9102 /**
9103  * lpfc_create_shost - Create hba physical port with associated scsi host.
9104  * @phba: pointer to lpfc hba data structure.
9105  *
9106  * This routine is invoked to create HBA physical port and associate a SCSI
9107  * host with it.
9108  *
9109  * Return codes
9110  *      0 - successful
9111  *      other values - error
9112  **/
9113 static int
9114 lpfc_create_shost(struct lpfc_hba *phba)
9115 {
9116         struct lpfc_vport *vport;
9117         struct Scsi_Host  *shost;
9118
9119         /* Initialize HBA FC structure */
9120         phba->fc_edtov = FF_DEF_EDTOV;
9121         phba->fc_ratov = FF_DEF_RATOV;
9122         phba->fc_altov = FF_DEF_ALTOV;
9123         phba->fc_arbtov = FF_DEF_ARBTOV;
9124
9125         atomic_set(&phba->sdev_cnt, 0);
9126         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
9127         if (!vport)
9128                 return -ENODEV;
9129
9130         shost = lpfc_shost_from_vport(vport);
9131         phba->pport = vport;
9132
9133         if (phba->nvmet_support) {
9134                 /* Only 1 vport (pport) will support NVME target */
9135                 phba->targetport = NULL;
9136                 phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
9137                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC,
9138                                 "6076 NVME Target Found\n");
9139         }
9140
9141         lpfc_debugfs_initialize(vport);
9142         /* Put reference to SCSI host to driver's device private data */
9143         pci_set_drvdata(phba->pcidev, shost);
9144
9145         lpfc_setup_fdmi_mask(vport);
9146
9147         /*
9148          * At this point we are fully registered with PSA. In addition,
9149          * any initial discovery should be completed.
9150          */
9151         return 0;
9152 }
9153
9154 /**
9155  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
9156  * @phba: pointer to lpfc hba data structure.
9157  *
9158  * This routine is invoked to destroy HBA physical port and the associated
9159  * SCSI host.
9160  **/
9161 static void
9162 lpfc_destroy_shost(struct lpfc_hba *phba)
9163 {
9164         struct lpfc_vport *vport = phba->pport;
9165
9166         /* Destroy physical port that associated with the SCSI host */
9167         destroy_port(vport);
9168
9169         return;
9170 }
9171
9172 /**
9173  * lpfc_setup_bg - Setup Block guard structures and debug areas.
9174  * @phba: pointer to lpfc hba data structure.
9175  * @shost: the shost to be used to detect Block guard settings.
9176  *
9177  * This routine sets up the local Block guard protocol settings for @shost.
9178  * This routine also allocates memory for debugging bg buffers.
9179  **/
9180 static void
9181 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
9182 {
9183         uint32_t old_mask;
9184         uint32_t old_guard;
9185
9186         if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
9187                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9188                                 "1478 Registering BlockGuard with the "
9189                                 "SCSI layer\n");
9190
9191                 old_mask = phba->cfg_prot_mask;
9192                 old_guard = phba->cfg_prot_guard;
9193
9194                 /* Only allow supported values */
9195                 phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
9196                         SHOST_DIX_TYPE0_PROTECTION |
9197                         SHOST_DIX_TYPE1_PROTECTION);
9198                 phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |
9199                                          SHOST_DIX_GUARD_CRC);
9200
9201                 /* DIF Type 1 protection for profiles AST1/C1 is end to end */
9202                 if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
9203                         phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
9204
9205                 if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
9206                         if ((old_mask != phba->cfg_prot_mask) ||
9207                                 (old_guard != phba->cfg_prot_guard))
9208                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9209                                         "1475 Registering BlockGuard with the "
9210                                         "SCSI layer: mask %d  guard %d\n",
9211                                         phba->cfg_prot_mask,
9212                                         phba->cfg_prot_guard);
9213
9214                         scsi_host_set_prot(shost, phba->cfg_prot_mask);
9215                         scsi_host_set_guard(shost, phba->cfg_prot_guard);
9216                 } else
9217                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9218                                 "1479 Not Registering BlockGuard with the SCSI "
9219                                 "layer, Bad protection parameters: %d %d\n",
9220                                 old_mask, old_guard);
9221         }
9222 }
9223
9224 /**
9225  * lpfc_post_init_setup - Perform necessary device post initialization setup.
9226  * @phba: pointer to lpfc hba data structure.
9227  *
9228  * This routine is invoked to perform all the necessary post initialization
9229  * setup for the device.
9230  **/
9231 static void
9232 lpfc_post_init_setup(struct lpfc_hba *phba)
9233 {
9234         struct Scsi_Host  *shost;
9235         struct lpfc_adapter_event_header adapter_event;
9236
9237         /* Get the default values for Model Name and Description */
9238         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
9239
9240         /*
9241          * hba setup may have changed the hba_queue_depth so we need to
9242          * adjust the value of can_queue.
9243          */
9244         shost = pci_get_drvdata(phba->pcidev);
9245         shost->can_queue = phba->cfg_hba_queue_depth - 10;
9246
9247         lpfc_host_attrib_init(shost);
9248
9249         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
9250                 spin_lock_irq(shost->host_lock);
9251                 lpfc_poll_start_timer(phba);
9252                 spin_unlock_irq(shost->host_lock);
9253         }
9254
9255         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9256                         "0428 Perform SCSI scan\n");
9257         /* Send board arrival event to upper layer */
9258         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
9259         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
9260         fc_host_post_vendor_event(shost, fc_get_event_number(),
9261                                   sizeof(adapter_event),
9262                                   (char *) &adapter_event,
9263                                   LPFC_NL_VENDOR_ID);
9264         return;
9265 }
9266
9267 /**
9268  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
9269  * @phba: pointer to lpfc hba data structure.
9270  *
9271  * This routine is invoked to set up the PCI device memory space for device
9272  * with SLI-3 interface spec.
9273  *
9274  * Return codes
9275  *      0 - successful
9276  *      other values - error
9277  **/
9278 static int
9279 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
9280 {
9281         struct pci_dev *pdev = phba->pcidev;
9282         unsigned long bar0map_len, bar2map_len;
9283         int i, hbq_count;
9284         void *ptr;
9285         int error;
9286
9287         if (!pdev)
9288                 return -ENODEV;
9289
9290         /* Set the device DMA mask size */
9291         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9292         if (error)
9293                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9294         if (error)
9295                 return error;
9296         error = -ENODEV;
9297
9298         /* Get the bus address of Bar0 and Bar2 and the number of bytes
9299          * required by each mapping.
9300          */
9301         phba->pci_bar0_map = pci_resource_start(pdev, 0);
9302         bar0map_len = pci_resource_len(pdev, 0);
9303
9304         phba->pci_bar2_map = pci_resource_start(pdev, 2);
9305         bar2map_len = pci_resource_len(pdev, 2);
9306
9307         /* Map HBA SLIM to a kernel virtual address. */
9308         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
9309         if (!phba->slim_memmap_p) {
9310                 dev_printk(KERN_ERR, &pdev->dev,
9311                            "ioremap failed for SLIM memory.\n");
9312                 goto out;
9313         }
9314
9315         /* Map HBA Control Registers to a kernel virtual address. */
9316         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
9317         if (!phba->ctrl_regs_memmap_p) {
9318                 dev_printk(KERN_ERR, &pdev->dev,
9319                            "ioremap failed for HBA control registers.\n");
9320                 goto out_iounmap_slim;
9321         }
9322
9323         /* Allocate memory for SLI-2 structures */
9324         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
9325                                                &phba->slim2p.phys, GFP_KERNEL);
9326         if (!phba->slim2p.virt)
9327                 goto out_iounmap;
9328
9329         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
9330         phba->mbox_ext = (phba->slim2p.virt +
9331                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
9332         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
9333         phba->IOCBs = (phba->slim2p.virt +
9334                        offsetof(struct lpfc_sli2_slim, IOCBs));
9335
9336         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
9337                                                  lpfc_sli_hbq_size(),
9338                                                  &phba->hbqslimp.phys,
9339                                                  GFP_KERNEL);
9340         if (!phba->hbqslimp.virt)
9341                 goto out_free_slim;
9342
9343         hbq_count = lpfc_sli_hbq_count();
9344         ptr = phba->hbqslimp.virt;
9345         for (i = 0; i < hbq_count; ++i) {
9346                 phba->hbqs[i].hbq_virt = ptr;
9347                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
9348                 ptr += (lpfc_hbq_defs[i]->entry_count *
9349                         sizeof(struct lpfc_hbq_entry));
9350         }
9351         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
9352         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
9353
9354         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
9355
9356         phba->MBslimaddr = phba->slim_memmap_p;
9357         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
9358         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
9359         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
9360         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
9361
9362         return 0;
9363
9364 out_free_slim:
9365         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
9366                           phba->slim2p.virt, phba->slim2p.phys);
9367 out_iounmap:
9368         iounmap(phba->ctrl_regs_memmap_p);
9369 out_iounmap_slim:
9370         iounmap(phba->slim_memmap_p);
9371 out:
9372         return error;
9373 }
9374
9375 /**
9376  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
9377  * @phba: pointer to lpfc hba data structure.
9378  *
9379  * This routine is invoked to unset the PCI device memory space for device
9380  * with SLI-3 interface spec.
9381  **/
9382 static void
9383 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
9384 {
9385         struct pci_dev *pdev;
9386
9387         /* Obtain PCI device reference */
9388         if (!phba->pcidev)
9389                 return;
9390         else
9391                 pdev = phba->pcidev;
9392
9393         /* Free coherent DMA memory allocated */
9394         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
9395                           phba->hbqslimp.virt, phba->hbqslimp.phys);
9396         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
9397                           phba->slim2p.virt, phba->slim2p.phys);
9398
9399         /* I/O memory unmap */
9400         iounmap(phba->ctrl_regs_memmap_p);
9401         iounmap(phba->slim_memmap_p);
9402
9403         return;
9404 }
9405
9406 /**
9407  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
9408  * @phba: pointer to lpfc hba data structure.
9409  *
9410  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
9411  * done and check status.
9412  *
9413  * Return 0 if successful, otherwise -ENODEV.
9414  **/
9415 int
9416 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
9417 {
9418         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
9419         struct lpfc_register reg_data;
9420         int i, port_error = 0;
9421         uint32_t if_type;
9422
9423         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
9424         memset(&reg_data, 0, sizeof(reg_data));
9425         if (!phba->sli4_hba.PSMPHRregaddr)
9426                 return -ENODEV;
9427
9428         /* Wait up to 30 seconds for the SLI Port POST done and ready */
9429         for (i = 0; i < 3000; i++) {
9430                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
9431                         &portsmphr_reg.word0) ||
9432                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
9433                         /* Port has a fatal POST error, break out */
9434                         port_error = -ENODEV;
9435                         break;
9436                 }
9437                 if (LPFC_POST_STAGE_PORT_READY ==
9438                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
9439                         break;
9440                 msleep(10);
9441         }
9442
9443         /*
9444          * If there was a port error during POST, then don't proceed with
9445          * other register reads as the data may not be valid.  Just exit.
9446          */
9447         if (port_error) {
9448                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9449                         "1408 Port Failed POST - portsmphr=0x%x, "
9450                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
9451                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
9452                         portsmphr_reg.word0,
9453                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
9454                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
9455                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
9456                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
9457                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
9458                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
9459                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
9460                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
9461         } else {
9462                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9463                                 "2534 Device Info: SLIFamily=0x%x, "
9464                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
9465                                 "SLIHint_2=0x%x, FT=0x%x\n",
9466                                 bf_get(lpfc_sli_intf_sli_family,
9467                                        &phba->sli4_hba.sli_intf),
9468                                 bf_get(lpfc_sli_intf_slirev,
9469                                        &phba->sli4_hba.sli_intf),
9470                                 bf_get(lpfc_sli_intf_if_type,
9471                                        &phba->sli4_hba.sli_intf),
9472                                 bf_get(lpfc_sli_intf_sli_hint1,
9473                                        &phba->sli4_hba.sli_intf),
9474                                 bf_get(lpfc_sli_intf_sli_hint2,
9475                                        &phba->sli4_hba.sli_intf),
9476                                 bf_get(lpfc_sli_intf_func_type,
9477                                        &phba->sli4_hba.sli_intf));
9478                 /*
9479                  * Check for other Port errors during the initialization
9480                  * process.  Fail the load if the port did not come up
9481                  * correctly.
9482                  */
9483                 if_type = bf_get(lpfc_sli_intf_if_type,
9484                                  &phba->sli4_hba.sli_intf);
9485                 switch (if_type) {
9486                 case LPFC_SLI_INTF_IF_TYPE_0:
9487                         phba->sli4_hba.ue_mask_lo =
9488                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
9489                         phba->sli4_hba.ue_mask_hi =
9490                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
9491                         uerrlo_reg.word0 =
9492                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
9493                         uerrhi_reg.word0 =
9494                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
9495                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
9496                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
9497                                 lpfc_printf_log(phba, KERN_ERR,
9498                                                 LOG_TRACE_EVENT,
9499                                                 "1422 Unrecoverable Error "
9500                                                 "Detected during POST "
9501                                                 "uerr_lo_reg=0x%x, "
9502                                                 "uerr_hi_reg=0x%x, "
9503                                                 "ue_mask_lo_reg=0x%x, "
9504                                                 "ue_mask_hi_reg=0x%x\n",
9505                                                 uerrlo_reg.word0,
9506                                                 uerrhi_reg.word0,
9507                                                 phba->sli4_hba.ue_mask_lo,
9508                                                 phba->sli4_hba.ue_mask_hi);
9509                                 port_error = -ENODEV;
9510                         }
9511                         break;
9512                 case LPFC_SLI_INTF_IF_TYPE_2:
9513                 case LPFC_SLI_INTF_IF_TYPE_6:
9514                         /* Final checks.  The port status should be clean. */
9515                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
9516                                 &reg_data.word0) ||
9517                                 lpfc_sli4_unrecoverable_port(&reg_data)) {
9518                                 phba->work_status[0] =
9519                                         readl(phba->sli4_hba.u.if_type2.
9520                                               ERR1regaddr);
9521                                 phba->work_status[1] =
9522                                         readl(phba->sli4_hba.u.if_type2.
9523                                               ERR2regaddr);
9524                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9525                                         "2888 Unrecoverable port error "
9526                                         "following POST: port status reg "
9527                                         "0x%x, port_smphr reg 0x%x, "
9528                                         "error 1=0x%x, error 2=0x%x\n",
9529                                         reg_data.word0,
9530                                         portsmphr_reg.word0,
9531                                         phba->work_status[0],
9532                                         phba->work_status[1]);
9533                                 port_error = -ENODEV;
9534                                 break;
9535                         }
9536
9537                         if (lpfc_pldv_detect &&
9538                             bf_get(lpfc_sli_intf_sli_family,
9539                                    &phba->sli4_hba.sli_intf) ==
9540                                         LPFC_SLI_INTF_FAMILY_G6)
9541                                 pci_write_config_byte(phba->pcidev,
9542                                                       LPFC_SLI_INTF, CFG_PLD);
9543                         break;
9544                 case LPFC_SLI_INTF_IF_TYPE_1:
9545                 default:
9546                         break;
9547                 }
9548         }
9549         return port_error;
9550 }
9551
9552 /**
9553  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
9554  * @phba: pointer to lpfc hba data structure.
9555  * @if_type:  The SLI4 interface type getting configured.
9556  *
9557  * This routine is invoked to set up SLI4 BAR0 PCI config space register
9558  * memory map.
9559  **/
9560 static void
9561 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
9562 {
9563         switch (if_type) {
9564         case LPFC_SLI_INTF_IF_TYPE_0:
9565                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
9566                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
9567                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
9568                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
9569                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
9570                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
9571                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
9572                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
9573                 phba->sli4_hba.SLIINTFregaddr =
9574                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
9575                 break;
9576         case LPFC_SLI_INTF_IF_TYPE_2:
9577                 phba->sli4_hba.u.if_type2.EQDregaddr =
9578                         phba->sli4_hba.conf_regs_memmap_p +
9579                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
9580                 phba->sli4_hba.u.if_type2.ERR1regaddr =
9581                         phba->sli4_hba.conf_regs_memmap_p +
9582                                                 LPFC_CTL_PORT_ER1_OFFSET;
9583                 phba->sli4_hba.u.if_type2.ERR2regaddr =
9584                         phba->sli4_hba.conf_regs_memmap_p +
9585                                                 LPFC_CTL_PORT_ER2_OFFSET;
9586                 phba->sli4_hba.u.if_type2.CTRLregaddr =
9587                         phba->sli4_hba.conf_regs_memmap_p +
9588                                                 LPFC_CTL_PORT_CTL_OFFSET;
9589                 phba->sli4_hba.u.if_type2.STATUSregaddr =
9590                         phba->sli4_hba.conf_regs_memmap_p +
9591                                                 LPFC_CTL_PORT_STA_OFFSET;
9592                 phba->sli4_hba.SLIINTFregaddr =
9593                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
9594                 phba->sli4_hba.PSMPHRregaddr =
9595                         phba->sli4_hba.conf_regs_memmap_p +
9596                                                 LPFC_CTL_PORT_SEM_OFFSET;
9597                 phba->sli4_hba.RQDBregaddr =
9598                         phba->sli4_hba.conf_regs_memmap_p +
9599                                                 LPFC_ULP0_RQ_DOORBELL;
9600                 phba->sli4_hba.WQDBregaddr =
9601                         phba->sli4_hba.conf_regs_memmap_p +
9602                                                 LPFC_ULP0_WQ_DOORBELL;
9603                 phba->sli4_hba.CQDBregaddr =
9604                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
9605                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
9606                 phba->sli4_hba.MQDBregaddr =
9607                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
9608                 phba->sli4_hba.BMBXregaddr =
9609                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
9610                 break;
9611         case LPFC_SLI_INTF_IF_TYPE_6:
9612                 phba->sli4_hba.u.if_type2.EQDregaddr =
9613                         phba->sli4_hba.conf_regs_memmap_p +
9614                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
9615                 phba->sli4_hba.u.if_type2.ERR1regaddr =
9616                         phba->sli4_hba.conf_regs_memmap_p +
9617                                                 LPFC_CTL_PORT_ER1_OFFSET;
9618                 phba->sli4_hba.u.if_type2.ERR2regaddr =
9619                         phba->sli4_hba.conf_regs_memmap_p +
9620                                                 LPFC_CTL_PORT_ER2_OFFSET;
9621                 phba->sli4_hba.u.if_type2.CTRLregaddr =
9622                         phba->sli4_hba.conf_regs_memmap_p +
9623                                                 LPFC_CTL_PORT_CTL_OFFSET;
9624                 phba->sli4_hba.u.if_type2.STATUSregaddr =
9625                         phba->sli4_hba.conf_regs_memmap_p +
9626                                                 LPFC_CTL_PORT_STA_OFFSET;
9627                 phba->sli4_hba.PSMPHRregaddr =
9628                         phba->sli4_hba.conf_regs_memmap_p +
9629                                                 LPFC_CTL_PORT_SEM_OFFSET;
9630                 phba->sli4_hba.BMBXregaddr =
9631                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
9632                 break;
9633         case LPFC_SLI_INTF_IF_TYPE_1:
9634         default:
9635                 dev_printk(KERN_ERR, &phba->pcidev->dev,
9636                            "FATAL - unsupported SLI4 interface type - %d\n",
9637                            if_type);
9638                 break;
9639         }
9640 }
9641
9642 /**
9643  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
9644  * @phba: pointer to lpfc hba data structure.
9645  * @if_type: sli if type to operate on.
9646  *
9647  * This routine is invoked to set up SLI4 BAR1 register memory map.
9648  **/
9649 static void
9650 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
9651 {
9652         switch (if_type) {
9653         case LPFC_SLI_INTF_IF_TYPE_0:
9654                 phba->sli4_hba.PSMPHRregaddr =
9655                         phba->sli4_hba.ctrl_regs_memmap_p +
9656                         LPFC_SLIPORT_IF0_SMPHR;
9657                 phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
9658                         LPFC_HST_ISR0;
9659                 phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
9660                         LPFC_HST_IMR0;
9661                 phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
9662                         LPFC_HST_ISCR0;
9663                 break;
9664         case LPFC_SLI_INTF_IF_TYPE_6:
9665                 phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9666                         LPFC_IF6_RQ_DOORBELL;
9667                 phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9668                         LPFC_IF6_WQ_DOORBELL;
9669                 phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9670                         LPFC_IF6_CQ_DOORBELL;
9671                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9672                         LPFC_IF6_EQ_DOORBELL;
9673                 phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9674                         LPFC_IF6_MQ_DOORBELL;
9675                 break;
9676         case LPFC_SLI_INTF_IF_TYPE_2:
9677         case LPFC_SLI_INTF_IF_TYPE_1:
9678         default:
9679                 dev_err(&phba->pcidev->dev,
9680                            "FATAL - unsupported SLI4 interface type - %d\n",
9681                            if_type);
9682                 break;
9683         }
9684 }
9685
9686 /**
9687  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
9688  * @phba: pointer to lpfc hba data structure.
9689  * @vf: virtual function number
9690  *
9691  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
9692  * based on the given viftual function number, @vf.
9693  *
9694  * Return 0 if successful, otherwise -ENODEV.
9695  **/
9696 static int
9697 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
9698 {
9699         if (vf > LPFC_VIR_FUNC_MAX)
9700                 return -ENODEV;
9701
9702         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9703                                 vf * LPFC_VFR_PAGE_SIZE +
9704                                         LPFC_ULP0_RQ_DOORBELL);
9705         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9706                                 vf * LPFC_VFR_PAGE_SIZE +
9707                                         LPFC_ULP0_WQ_DOORBELL);
9708         phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9709                                 vf * LPFC_VFR_PAGE_SIZE +
9710                                         LPFC_EQCQ_DOORBELL);
9711         phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
9712         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9713                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
9714         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9715                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
9716         return 0;
9717 }
9718
9719 /**
9720  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
9721  * @phba: pointer to lpfc hba data structure.
9722  *
9723  * This routine is invoked to create the bootstrap mailbox
9724  * region consistent with the SLI-4 interface spec.  This
9725  * routine allocates all memory necessary to communicate
9726  * mailbox commands to the port and sets up all alignment
9727  * needs.  No locks are expected to be held when calling
9728  * this routine.
9729  *
9730  * Return codes
9731  *      0 - successful
9732  *      -ENOMEM - could not allocated memory.
9733  **/
9734 static int
9735 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
9736 {
9737         uint32_t bmbx_size;
9738         struct lpfc_dmabuf *dmabuf;
9739         struct dma_address *dma_address;
9740         uint32_t pa_addr;
9741         uint64_t phys_addr;
9742
9743         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
9744         if (!dmabuf)
9745                 return -ENOMEM;
9746
9747         /*
9748          * The bootstrap mailbox region is comprised of 2 parts
9749          * plus an alignment restriction of 16 bytes.
9750          */
9751         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
9752         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,
9753                                           &dmabuf->phys, GFP_KERNEL);
9754         if (!dmabuf->virt) {
9755                 kfree(dmabuf);
9756                 return -ENOMEM;
9757         }
9758
9759         /*
9760          * Initialize the bootstrap mailbox pointers now so that the register
9761          * operations are simple later.  The mailbox dma address is required
9762          * to be 16-byte aligned.  Also align the virtual memory as each
9763          * maibox is copied into the bmbx mailbox region before issuing the
9764          * command to the port.
9765          */
9766         phba->sli4_hba.bmbx.dmabuf = dmabuf;
9767         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
9768
9769         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
9770                                               LPFC_ALIGN_16_BYTE);
9771         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
9772                                               LPFC_ALIGN_16_BYTE);
9773
9774         /*
9775          * Set the high and low physical addresses now.  The SLI4 alignment
9776          * requirement is 16 bytes and the mailbox is posted to the port
9777          * as two 30-bit addresses.  The other data is a bit marking whether
9778          * the 30-bit address is the high or low address.
9779          * Upcast bmbx aphys to 64bits so shift instruction compiles
9780          * clean on 32 bit machines.
9781          */
9782         dma_address = &phba->sli4_hba.bmbx.dma_address;
9783         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
9784         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
9785         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
9786                                            LPFC_BMBX_BIT1_ADDR_HI);
9787
9788         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
9789         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
9790                                            LPFC_BMBX_BIT1_ADDR_LO);
9791         return 0;
9792 }
9793
9794 /**
9795  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
9796  * @phba: pointer to lpfc hba data structure.
9797  *
9798  * This routine is invoked to teardown the bootstrap mailbox
9799  * region and release all host resources. This routine requires
9800  * the caller to ensure all mailbox commands recovered, no
9801  * additional mailbox comands are sent, and interrupts are disabled
9802  * before calling this routine.
9803  *
9804  **/
9805 static void
9806 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
9807 {
9808         dma_free_coherent(&phba->pcidev->dev,
9809                           phba->sli4_hba.bmbx.bmbx_size,
9810                           phba->sli4_hba.bmbx.dmabuf->virt,
9811                           phba->sli4_hba.bmbx.dmabuf->phys);
9812
9813         kfree(phba->sli4_hba.bmbx.dmabuf);
9814         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
9815 }
9816
9817 static const char * const lpfc_topo_to_str[] = {
9818         "Loop then P2P",
9819         "Loopback",
9820         "P2P Only",
9821         "Unsupported",
9822         "Loop Only",
9823         "Unsupported",
9824         "P2P then Loop",
9825 };
9826
9827 #define LINK_FLAGS_DEF  0x0
9828 #define LINK_FLAGS_P2P  0x1
9829 #define LINK_FLAGS_LOOP 0x2
9830 /**
9831  * lpfc_map_topology - Map the topology read from READ_CONFIG
9832  * @phba: pointer to lpfc hba data structure.
9833  * @rd_config: pointer to read config data
9834  *
9835  * This routine is invoked to map the topology values as read
9836  * from the read config mailbox command. If the persistent
9837  * topology feature is supported, the firmware will provide the
9838  * saved topology information to be used in INIT_LINK
9839  **/
9840 static void
9841 lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)
9842 {
9843         u8 ptv, tf, pt;
9844
9845         ptv = bf_get(lpfc_mbx_rd_conf_ptv, rd_config);
9846         tf = bf_get(lpfc_mbx_rd_conf_tf, rd_config);
9847         pt = bf_get(lpfc_mbx_rd_conf_pt, rd_config);
9848
9849         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
9850                         "2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",
9851                          ptv, tf, pt);
9852         if (!ptv) {
9853                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9854                                 "2019 FW does not support persistent topology "
9855                                 "Using driver parameter defined value [%s]",
9856                                 lpfc_topo_to_str[phba->cfg_topology]);
9857                 return;
9858         }
9859         /* FW supports persistent topology - override module parameter value */
9860         set_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag);
9861
9862         /* if ASIC_GEN_NUM >= 0xC) */
9863         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
9864                     LPFC_SLI_INTF_IF_TYPE_6) ||
9865             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
9866                     LPFC_SLI_INTF_FAMILY_G6)) {
9867                 if (!tf)
9868                         phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)
9869                                         ? FLAGS_TOPOLOGY_MODE_LOOP
9870                                         : FLAGS_TOPOLOGY_MODE_PT_PT);
9871                 else
9872                         clear_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag);
9873         } else { /* G5 */
9874                 if (tf)
9875                         /* If topology failover set - pt is '0' or '1' */
9876                         phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :
9877                                               FLAGS_TOPOLOGY_MODE_LOOP_PT);
9878                 else
9879                         phba->cfg_topology = ((pt == LINK_FLAGS_P2P)
9880                                         ? FLAGS_TOPOLOGY_MODE_PT_PT
9881                                         : FLAGS_TOPOLOGY_MODE_LOOP);
9882         }
9883         if (test_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag))
9884                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
9885                                 "2020 Using persistent topology value [%s]",
9886                                 lpfc_topo_to_str[phba->cfg_topology]);
9887         else
9888                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9889                                 "2021 Invalid topology values from FW "
9890                                 "Using driver parameter defined value [%s]",
9891                                 lpfc_topo_to_str[phba->cfg_topology]);
9892 }
9893
9894 /**
9895  * lpfc_sli4_read_config - Get the config parameters.
9896  * @phba: pointer to lpfc hba data structure.
9897  *
9898  * This routine is invoked to read the configuration parameters from the HBA.
9899  * The configuration parameters are used to set the base and maximum values
9900  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
9901  * allocation for the port.
9902  *
9903  * Return codes
9904  *      0 - successful
9905  *      -ENOMEM - No available memory
9906  *      -EIO - The mailbox failed to complete successfully.
9907  **/
9908 int
9909 lpfc_sli4_read_config(struct lpfc_hba *phba)
9910 {
9911         LPFC_MBOXQ_t *pmb;
9912         struct lpfc_mbx_read_config *rd_config;
9913         union  lpfc_sli4_cfg_shdr *shdr;
9914         uint32_t shdr_status, shdr_add_status;
9915         struct lpfc_mbx_get_func_cfg *get_func_cfg;
9916         struct lpfc_rsrc_desc_fcfcoe *desc;
9917         char *pdesc_0;
9918         uint16_t forced_link_speed;
9919         uint32_t if_type, qmin, fawwpn;
9920         int length, i, rc = 0, rc2;
9921
9922         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9923         if (!pmb) {
9924                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9925                                 "2011 Unable to allocate memory for issuing "
9926                                 "SLI_CONFIG_SPECIAL mailbox command\n");
9927                 return -ENOMEM;
9928         }
9929
9930         lpfc_read_config(phba, pmb);
9931
9932         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
9933         if (rc != MBX_SUCCESS) {
9934                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9935                                 "2012 Mailbox failed , mbxCmd x%x "
9936                                 "READ_CONFIG, mbxStatus x%x\n",
9937                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
9938                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
9939                 rc = -EIO;
9940         } else {
9941                 rd_config = &pmb->u.mqe.un.rd_config;
9942                 if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
9943                         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
9944                         phba->sli4_hba.lnk_info.lnk_tp =
9945                                 bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
9946                         phba->sli4_hba.lnk_info.lnk_no =
9947                                 bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
9948                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
9949                                         "3081 lnk_type:%d, lnk_numb:%d\n",
9950                                         phba->sli4_hba.lnk_info.lnk_tp,
9951                                         phba->sli4_hba.lnk_info.lnk_no);
9952                 } else
9953                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9954                                         "3082 Mailbox (x%x) returned ldv:x0\n",
9955                                         bf_get(lpfc_mqe_command, &pmb->u.mqe));
9956                 if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {
9957                         phba->bbcredit_support = 1;
9958                         phba->sli4_hba.bbscn_params.word0 = rd_config->word8;
9959                 }
9960
9961                 fawwpn = bf_get(lpfc_mbx_rd_conf_fawwpn, rd_config);
9962
9963                 if (fawwpn) {
9964                         lpfc_printf_log(phba, KERN_INFO,
9965                                         LOG_INIT | LOG_DISCOVERY,
9966                                         "2702 READ_CONFIG: FA-PWWN is "
9967                                         "configured on\n");
9968                         phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_CONFIG;
9969                 } else {
9970                         /* Clear FW configured flag, preserve driver flag */
9971                         phba->sli4_hba.fawwpn_flag &= ~LPFC_FAWWPN_CONFIG;
9972                 }
9973
9974                 phba->sli4_hba.conf_trunk =
9975                         bf_get(lpfc_mbx_rd_conf_trunk, rd_config);
9976                 phba->sli4_hba.extents_in_use =
9977                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
9978
9979                 phba->sli4_hba.max_cfg_param.max_xri =
9980                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
9981                 /* Reduce resource usage in kdump environment */
9982                 if (is_kdump_kernel() &&
9983                     phba->sli4_hba.max_cfg_param.max_xri > 512)
9984                         phba->sli4_hba.max_cfg_param.max_xri = 512;
9985                 phba->sli4_hba.max_cfg_param.xri_base =
9986                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
9987                 phba->sli4_hba.max_cfg_param.max_vpi =
9988                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
9989                 /* Limit the max we support */
9990                 if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)
9991                         phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;
9992                 phba->sli4_hba.max_cfg_param.vpi_base =
9993                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
9994                 phba->sli4_hba.max_cfg_param.max_rpi =
9995                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
9996                 phba->sli4_hba.max_cfg_param.rpi_base =
9997                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
9998                 phba->sli4_hba.max_cfg_param.max_vfi =
9999                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
10000                 phba->sli4_hba.max_cfg_param.vfi_base =
10001                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
10002                 phba->sli4_hba.max_cfg_param.max_fcfi =
10003                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
10004                 phba->sli4_hba.max_cfg_param.max_eq =
10005                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
10006                 phba->sli4_hba.max_cfg_param.max_rq =
10007                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
10008                 phba->sli4_hba.max_cfg_param.max_wq =
10009                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
10010                 phba->sli4_hba.max_cfg_param.max_cq =
10011                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
10012                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
10013                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
10014                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
10015                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
10016                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
10017                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
10018                 phba->max_vports = phba->max_vpi;
10019
10020                 /* Next decide on FPIN or Signal E2E CGN support
10021                  * For congestion alarms and warnings valid combination are:
10022                  * 1. FPIN alarms / FPIN warnings
10023                  * 2. Signal alarms / Signal warnings
10024                  * 3. FPIN alarms / Signal warnings
10025                  * 4. Signal alarms / FPIN warnings
10026                  *
10027                  * Initialize the adapter frequency to 100 mSecs
10028                  */
10029                 phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
10030                 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
10031                 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
10032
10033                 if (lpfc_use_cgn_signal) {
10034                         if (bf_get(lpfc_mbx_rd_conf_wcs, rd_config)) {
10035                                 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
10036                                 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
10037                         }
10038                         if (bf_get(lpfc_mbx_rd_conf_acs, rd_config)) {
10039                                 /* MUST support both alarm and warning
10040                                  * because EDC does not support alarm alone.
10041                                  */
10042                                 if (phba->cgn_reg_signal !=
10043                                     EDC_CG_SIG_WARN_ONLY) {
10044                                         /* Must support both or none */
10045                                         phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
10046                                         phba->cgn_reg_signal =
10047                                                 EDC_CG_SIG_NOTSUPPORTED;
10048                                 } else {
10049                                         phba->cgn_reg_signal =
10050                                                 EDC_CG_SIG_WARN_ALARM;
10051                                         phba->cgn_reg_fpin =
10052                                                 LPFC_CGN_FPIN_NONE;
10053                                 }
10054                         }
10055                 }
10056
10057                 /* Set the congestion initial signal and fpin values. */
10058                 phba->cgn_init_reg_fpin = phba->cgn_reg_fpin;
10059                 phba->cgn_init_reg_signal = phba->cgn_reg_signal;
10060
10061                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
10062                                 "6446 READ_CONFIG reg_sig x%x reg_fpin:x%x\n",
10063                                 phba->cgn_reg_signal, phba->cgn_reg_fpin);
10064
10065                 lpfc_map_topology(phba, rd_config);
10066                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
10067                                 "2003 cfg params Extents? %d "
10068                                 "XRI(B:%d M:%d), "
10069                                 "VPI(B:%d M:%d) "
10070                                 "VFI(B:%d M:%d) "
10071                                 "RPI(B:%d M:%d) "
10072                                 "FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d lmt:x%x\n",
10073                                 phba->sli4_hba.extents_in_use,
10074                                 phba->sli4_hba.max_cfg_param.xri_base,
10075                                 phba->sli4_hba.max_cfg_param.max_xri,
10076                                 phba->sli4_hba.max_cfg_param.vpi_base,
10077                                 phba->sli4_hba.max_cfg_param.max_vpi,
10078                                 phba->sli4_hba.max_cfg_param.vfi_base,
10079                                 phba->sli4_hba.max_cfg_param.max_vfi,
10080                                 phba->sli4_hba.max_cfg_param.rpi_base,
10081                                 phba->sli4_hba.max_cfg_param.max_rpi,
10082                                 phba->sli4_hba.max_cfg_param.max_fcfi,
10083                                 phba->sli4_hba.max_cfg_param.max_eq,
10084                                 phba->sli4_hba.max_cfg_param.max_cq,
10085                                 phba->sli4_hba.max_cfg_param.max_wq,
10086                                 phba->sli4_hba.max_cfg_param.max_rq,
10087                                 phba->lmt);
10088
10089                 /*
10090                  * Calculate queue resources based on how
10091                  * many WQ/CQ/EQs are available.
10092                  */
10093                 qmin = phba->sli4_hba.max_cfg_param.max_wq;
10094                 if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
10095                         qmin = phba->sli4_hba.max_cfg_param.max_cq;
10096                 /*
10097                  * Reserve 4 (ELS, NVME LS, MBOX, plus one extra) and
10098                  * the remainder can be used for NVME / FCP.
10099                  */
10100                 qmin -= 4;
10101                 if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
10102                         qmin = phba->sli4_hba.max_cfg_param.max_eq;
10103
10104                 /* Check to see if there is enough for default cfg */
10105                 if ((phba->cfg_irq_chann > qmin) ||
10106                     (phba->cfg_hdw_queue > qmin)) {
10107                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10108                                         "2005 Reducing Queues - "
10109                                         "FW resource limitation: "
10110                                         "WQ %d CQ %d EQ %d: min %d: "
10111                                         "IRQ %d HDWQ %d\n",
10112                                         phba->sli4_hba.max_cfg_param.max_wq,
10113                                         phba->sli4_hba.max_cfg_param.max_cq,
10114                                         phba->sli4_hba.max_cfg_param.max_eq,
10115                                         qmin, phba->cfg_irq_chann,
10116                                         phba->cfg_hdw_queue);
10117
10118                         if (phba->cfg_irq_chann > qmin)
10119                                 phba->cfg_irq_chann = qmin;
10120                         if (phba->cfg_hdw_queue > qmin)
10121                                 phba->cfg_hdw_queue = qmin;
10122                 }
10123         }
10124
10125         if (rc)
10126                 goto read_cfg_out;
10127
10128         /* Update link speed if forced link speed is supported */
10129         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10130         if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
10131                 forced_link_speed =
10132                         bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
10133                 if (forced_link_speed) {
10134                         set_bit(HBA_FORCED_LINK_SPEED, &phba->hba_flag);
10135
10136                         switch (forced_link_speed) {
10137                         case LINK_SPEED_1G:
10138                                 phba->cfg_link_speed =
10139                                         LPFC_USER_LINK_SPEED_1G;
10140                                 break;
10141                         case LINK_SPEED_2G:
10142                                 phba->cfg_link_speed =
10143                                         LPFC_USER_LINK_SPEED_2G;
10144                                 break;
10145                         case LINK_SPEED_4G:
10146                                 phba->cfg_link_speed =
10147                                         LPFC_USER_LINK_SPEED_4G;
10148                                 break;
10149                         case LINK_SPEED_8G:
10150                                 phba->cfg_link_speed =
10151                                         LPFC_USER_LINK_SPEED_8G;
10152                                 break;
10153                         case LINK_SPEED_10G:
10154                                 phba->cfg_link_speed =
10155                                         LPFC_USER_LINK_SPEED_10G;
10156                                 break;
10157                         case LINK_SPEED_16G:
10158                                 phba->cfg_link_speed =
10159                                         LPFC_USER_LINK_SPEED_16G;
10160                                 break;
10161                         case LINK_SPEED_32G:
10162                                 phba->cfg_link_speed =
10163                                         LPFC_USER_LINK_SPEED_32G;
10164                                 break;
10165                         case LINK_SPEED_64G:
10166                                 phba->cfg_link_speed =
10167                                         LPFC_USER_LINK_SPEED_64G;
10168                                 break;
10169                         case 0xffff:
10170                                 phba->cfg_link_speed =
10171                                         LPFC_USER_LINK_SPEED_AUTO;
10172                                 break;
10173                         default:
10174                                 lpfc_printf_log(phba, KERN_ERR,
10175                                                 LOG_TRACE_EVENT,
10176                                                 "0047 Unrecognized link "
10177                                                 "speed : %d\n",
10178                                                 forced_link_speed);
10179                                 phba->cfg_link_speed =
10180                                         LPFC_USER_LINK_SPEED_AUTO;
10181                         }
10182                 }
10183         }
10184
10185         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
10186         length = phba->sli4_hba.max_cfg_param.max_xri -
10187                         lpfc_sli4_get_els_iocb_cnt(phba);
10188         if (phba->cfg_hba_queue_depth > length) {
10189                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10190                                 "3361 HBA queue depth changed from %d to %d\n",
10191                                 phba->cfg_hba_queue_depth, length);
10192                 phba->cfg_hba_queue_depth = length;
10193         }
10194
10195         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
10196             LPFC_SLI_INTF_IF_TYPE_2)
10197                 goto read_cfg_out;
10198
10199         /* get the pf# and vf# for SLI4 if_type 2 port */
10200         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
10201                   sizeof(struct lpfc_sli4_cfg_mhdr));
10202         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
10203                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
10204                          length, LPFC_SLI4_MBX_EMBED);
10205
10206         rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
10207         shdr = (union lpfc_sli4_cfg_shdr *)
10208                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
10209         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10210         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10211         if (rc2 || shdr_status || shdr_add_status) {
10212                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10213                                 "3026 Mailbox failed , mbxCmd x%x "
10214                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
10215                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
10216                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
10217                 goto read_cfg_out;
10218         }
10219
10220         /* search for fc_fcoe resrouce descriptor */
10221         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
10222
10223         pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
10224         desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
10225         length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
10226         if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
10227                 length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
10228         else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
10229                 goto read_cfg_out;
10230
10231         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
10232                 desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
10233                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
10234                     bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
10235                         phba->sli4_hba.iov.pf_number =
10236                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
10237                         phba->sli4_hba.iov.vf_number =
10238                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
10239                         break;
10240                 }
10241         }
10242
10243         if (i < LPFC_RSRC_DESC_MAX_NUM)
10244                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
10245                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
10246                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
10247                                 phba->sli4_hba.iov.vf_number);
10248         else
10249                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10250                                 "3028 GET_FUNCTION_CONFIG: failed to find "
10251                                 "Resource Descriptor:x%x\n",
10252                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
10253
10254 read_cfg_out:
10255         mempool_free(pmb, phba->mbox_mem_pool);
10256         return rc;
10257 }
10258
10259 /**
10260  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
10261  * @phba: pointer to lpfc hba data structure.
10262  *
10263  * This routine is invoked to setup the port-side endian order when
10264  * the port if_type is 0.  This routine has no function for other
10265  * if_types.
10266  *
10267  * Return codes
10268  *      0 - successful
10269  *      -ENOMEM - No available memory
10270  *      -EIO - The mailbox failed to complete successfully.
10271  **/
10272 static int
10273 lpfc_setup_endian_order(struct lpfc_hba *phba)
10274 {
10275         LPFC_MBOXQ_t *mboxq;
10276         uint32_t if_type, rc = 0;
10277         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
10278                                       HOST_ENDIAN_HIGH_WORD1};
10279
10280         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10281         switch (if_type) {
10282         case LPFC_SLI_INTF_IF_TYPE_0:
10283                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
10284                                                        GFP_KERNEL);
10285                 if (!mboxq) {
10286                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10287                                         "0492 Unable to allocate memory for "
10288                                         "issuing SLI_CONFIG_SPECIAL mailbox "
10289                                         "command\n");
10290                         return -ENOMEM;
10291                 }
10292
10293                 /*
10294                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
10295                  * two words to contain special data values and no other data.
10296                  */
10297                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
10298                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
10299                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
10300                 if (rc != MBX_SUCCESS) {
10301                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10302                                         "0493 SLI_CONFIG_SPECIAL mailbox "
10303                                         "failed with status x%x\n",
10304                                         rc);
10305                         rc = -EIO;
10306                 }
10307                 mempool_free(mboxq, phba->mbox_mem_pool);
10308                 break;
10309         case LPFC_SLI_INTF_IF_TYPE_6:
10310         case LPFC_SLI_INTF_IF_TYPE_2:
10311         case LPFC_SLI_INTF_IF_TYPE_1:
10312         default:
10313                 break;
10314         }
10315         return rc;
10316 }
10317
10318 /**
10319  * lpfc_sli4_queue_verify - Verify and update EQ counts
10320  * @phba: pointer to lpfc hba data structure.
10321  *
10322  * This routine is invoked to check the user settable queue counts for EQs.
10323  * After this routine is called the counts will be set to valid values that
10324  * adhere to the constraints of the system's interrupt vectors and the port's
10325  * queue resources.
10326  *
10327  * Return codes
10328  *      0 - successful
10329  *      -ENOMEM - No available memory
10330  **/
10331 static int
10332 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
10333 {
10334         /*
10335          * Sanity check for configured queue parameters against the run-time
10336          * device parameters
10337          */
10338
10339         if (phba->nvmet_support) {
10340                 if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)
10341                         phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
10342                 if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
10343                         phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
10344         }
10345
10346         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10347                         "2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
10348                         phba->cfg_hdw_queue, phba->cfg_irq_chann,
10349                         phba->cfg_nvmet_mrq);
10350
10351         /* Get EQ depth from module parameter, fake the default for now */
10352         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
10353         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
10354
10355         /* Get CQ depth from module parameter, fake the default for now */
10356         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
10357         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
10358         return 0;
10359 }
10360
10361 static int
10362 lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
10363 {
10364         struct lpfc_queue *qdesc;
10365         u32 wqesize;
10366         int cpu;
10367
10368         cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);
10369         /* Create Fast Path IO CQs */
10370         if (phba->enab_exp_wqcq_pages)
10371                 /* Increase the CQ size when WQEs contain an embedded cdb */
10372                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
10373                                               phba->sli4_hba.cq_esize,
10374                                               LPFC_CQE_EXP_COUNT, cpu);
10375
10376         else
10377                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10378                                               phba->sli4_hba.cq_esize,
10379                                               phba->sli4_hba.cq_ecount, cpu);
10380         if (!qdesc) {
10381                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10382                                 "0499 Failed allocate fast-path IO CQ (%d)\n",
10383                                 idx);
10384                 return 1;
10385         }
10386         qdesc->qe_valid = 1;
10387         qdesc->hdwq = idx;
10388         qdesc->chann = cpu;
10389         phba->sli4_hba.hdwq[idx].io_cq = qdesc;
10390
10391         /* Create Fast Path IO WQs */
10392         if (phba->enab_exp_wqcq_pages) {
10393                 /* Increase the WQ size when WQEs contain an embedded cdb */
10394                 wqesize = (phba->fcp_embed_io) ?
10395                         LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
10396                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
10397                                               wqesize,
10398                                               LPFC_WQE_EXP_COUNT, cpu);
10399         } else
10400                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10401                                               phba->sli4_hba.wq_esize,
10402                                               phba->sli4_hba.wq_ecount, cpu);
10403
10404         if (!qdesc) {
10405                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10406                                 "0503 Failed allocate fast-path IO WQ (%d)\n",
10407                                 idx);
10408                 return 1;
10409         }
10410         qdesc->hdwq = idx;
10411         qdesc->chann = cpu;
10412         phba->sli4_hba.hdwq[idx].io_wq = qdesc;
10413         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
10414         return 0;
10415 }
10416
10417 /**
10418  * lpfc_sli4_queue_create - Create all the SLI4 queues
10419  * @phba: pointer to lpfc hba data structure.
10420  *
10421  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
10422  * operation. For each SLI4 queue type, the parameters such as queue entry
10423  * count (queue depth) shall be taken from the module parameter. For now,
10424  * we just use some constant number as place holder.
10425  *
10426  * Return codes
10427  *      0 - successful
10428  *      -ENOMEM - No availble memory
10429  *      -EIO - The mailbox failed to complete successfully.
10430  **/
10431 int
10432 lpfc_sli4_queue_create(struct lpfc_hba *phba)
10433 {
10434         struct lpfc_queue *qdesc;
10435         int idx, cpu, eqcpu;
10436         struct lpfc_sli4_hdw_queue *qp;
10437         struct lpfc_vector_map_info *cpup;
10438         struct lpfc_vector_map_info *eqcpup;
10439         struct lpfc_eq_intr_info *eqi;
10440         u32 wqesize;
10441
10442         /*
10443          * Create HBA Record arrays.
10444          * Both NVME and FCP will share that same vectors / EQs
10445          */
10446         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
10447         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
10448         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
10449         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
10450         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
10451         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
10452         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
10453         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
10454         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
10455         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
10456
10457         if (!phba->sli4_hba.hdwq) {
10458                 phba->sli4_hba.hdwq = kcalloc(
10459                         phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),
10460                         GFP_KERNEL);
10461                 if (!phba->sli4_hba.hdwq) {
10462                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10463                                         "6427 Failed allocate memory for "
10464                                         "fast-path Hardware Queue array\n");
10465                         goto out_error;
10466                 }
10467                 /* Prepare hardware queues to take IO buffers */
10468                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10469                         qp = &phba->sli4_hba.hdwq[idx];
10470                         spin_lock_init(&qp->io_buf_list_get_lock);
10471                         spin_lock_init(&qp->io_buf_list_put_lock);
10472                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
10473                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
10474                         qp->get_io_bufs = 0;
10475                         qp->put_io_bufs = 0;
10476                         qp->total_io_bufs = 0;
10477                         spin_lock_init(&qp->abts_io_buf_list_lock);
10478                         INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);
10479                         qp->abts_scsi_io_bufs = 0;
10480                         qp->abts_nvme_io_bufs = 0;
10481                         INIT_LIST_HEAD(&qp->sgl_list);
10482                         INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);
10483                         spin_lock_init(&qp->hdwq_lock);
10484                 }
10485         }
10486
10487         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
10488                 if (phba->nvmet_support) {
10489                         phba->sli4_hba.nvmet_cqset = kcalloc(
10490                                         phba->cfg_nvmet_mrq,
10491                                         sizeof(struct lpfc_queue *),
10492                                         GFP_KERNEL);
10493                         if (!phba->sli4_hba.nvmet_cqset) {
10494                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10495                                         "3121 Fail allocate memory for "
10496                                         "fast-path CQ set array\n");
10497                                 goto out_error;
10498                         }
10499                         phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
10500                                         phba->cfg_nvmet_mrq,
10501                                         sizeof(struct lpfc_queue *),
10502                                         GFP_KERNEL);
10503                         if (!phba->sli4_hba.nvmet_mrq_hdr) {
10504                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10505                                         "3122 Fail allocate memory for "
10506                                         "fast-path RQ set hdr array\n");
10507                                 goto out_error;
10508                         }
10509                         phba->sli4_hba.nvmet_mrq_data = kcalloc(
10510                                         phba->cfg_nvmet_mrq,
10511                                         sizeof(struct lpfc_queue *),
10512                                         GFP_KERNEL);
10513                         if (!phba->sli4_hba.nvmet_mrq_data) {
10514                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10515                                         "3124 Fail allocate memory for "
10516                                         "fast-path RQ set data array\n");
10517                                 goto out_error;
10518                         }
10519                 }
10520         }
10521
10522         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
10523
10524         /* Create HBA Event Queues (EQs) */
10525         for_each_present_cpu(cpu) {
10526                 /* We only want to create 1 EQ per vector, even though
10527                  * multiple CPUs might be using that vector. so only
10528                  * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
10529                  */
10530                 cpup = &phba->sli4_hba.cpu_map[cpu];
10531                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
10532                         continue;
10533
10534                 /* Get a ptr to the Hardware Queue associated with this CPU */
10535                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
10536
10537                 /* Allocate an EQ */
10538                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10539                                               phba->sli4_hba.eq_esize,
10540                                               phba->sli4_hba.eq_ecount, cpu);
10541                 if (!qdesc) {
10542                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10543                                         "0497 Failed allocate EQ (%d)\n",
10544                                         cpup->hdwq);
10545                         goto out_error;
10546                 }
10547                 qdesc->qe_valid = 1;
10548                 qdesc->hdwq = cpup->hdwq;
10549                 qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
10550                 qdesc->last_cpu = qdesc->chann;
10551
10552                 /* Save the allocated EQ in the Hardware Queue */
10553                 qp->hba_eq = qdesc;
10554
10555                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);
10556                 list_add(&qdesc->cpu_list, &eqi->list);
10557         }
10558
10559         /* Now we need to populate the other Hardware Queues, that share
10560          * an IRQ vector, with the associated EQ ptr.
10561          */
10562         for_each_present_cpu(cpu) {
10563                 cpup = &phba->sli4_hba.cpu_map[cpu];
10564
10565                 /* Check for EQ already allocated in previous loop */
10566                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
10567                         continue;
10568
10569                 /* Check for multiple CPUs per hdwq */
10570                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
10571                 if (qp->hba_eq)
10572                         continue;
10573
10574                 /* We need to share an EQ for this hdwq */
10575                 eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
10576                 eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
10577                 qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
10578         }
10579
10580         /* Allocate IO Path SLI4 CQ/WQs */
10581         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10582                 if (lpfc_alloc_io_wq_cq(phba, idx))
10583                         goto out_error;
10584         }
10585
10586         if (phba->nvmet_support) {
10587                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
10588                         cpu = lpfc_find_cpu_handle(phba, idx,
10589                                                    LPFC_FIND_BY_HDWQ);
10590                         qdesc = lpfc_sli4_queue_alloc(phba,
10591                                                       LPFC_DEFAULT_PAGE_SIZE,
10592                                                       phba->sli4_hba.cq_esize,
10593                                                       phba->sli4_hba.cq_ecount,
10594                                                       cpu);
10595                         if (!qdesc) {
10596                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10597                                                 "3142 Failed allocate NVME "
10598                                                 "CQ Set (%d)\n", idx);
10599                                 goto out_error;
10600                         }
10601                         qdesc->qe_valid = 1;
10602                         qdesc->hdwq = idx;
10603                         qdesc->chann = cpu;
10604                         phba->sli4_hba.nvmet_cqset[idx] = qdesc;
10605                 }
10606         }
10607
10608         /*
10609          * Create Slow Path Completion Queues (CQs)
10610          */
10611
10612         cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);
10613         /* Create slow-path Mailbox Command Complete Queue */
10614         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10615                                       phba->sli4_hba.cq_esize,
10616                                       phba->sli4_hba.cq_ecount, cpu);
10617         if (!qdesc) {
10618                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10619                                 "0500 Failed allocate slow-path mailbox CQ\n");
10620                 goto out_error;
10621         }
10622         qdesc->qe_valid = 1;
10623         phba->sli4_hba.mbx_cq = qdesc;
10624
10625         /* Create slow-path ELS Complete Queue */
10626         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10627                                       phba->sli4_hba.cq_esize,
10628                                       phba->sli4_hba.cq_ecount, cpu);
10629         if (!qdesc) {
10630                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10631                                 "0501 Failed allocate slow-path ELS CQ\n");
10632                 goto out_error;
10633         }
10634         qdesc->qe_valid = 1;
10635         qdesc->chann = cpu;
10636         phba->sli4_hba.els_cq = qdesc;
10637
10638
10639         /*
10640          * Create Slow Path Work Queues (WQs)
10641          */
10642
10643         /* Create Mailbox Command Queue */
10644
10645         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10646                                       phba->sli4_hba.mq_esize,
10647                                       phba->sli4_hba.mq_ecount, cpu);
10648         if (!qdesc) {
10649                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10650                                 "0505 Failed allocate slow-path MQ\n");
10651                 goto out_error;
10652         }
10653         qdesc->chann = cpu;
10654         phba->sli4_hba.mbx_wq = qdesc;
10655
10656         /*
10657          * Create ELS Work Queues
10658          */
10659
10660         /*
10661          * Create slow-path ELS Work Queue.
10662          * Increase the ELS WQ size when WQEs contain an embedded cdb
10663          */
10664         wqesize = (phba->fcp_embed_io) ?
10665                         LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
10666
10667         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10668                                       wqesize,
10669                                       phba->sli4_hba.wq_ecount, cpu);
10670         if (!qdesc) {
10671                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10672                                 "0504 Failed allocate slow-path ELS WQ\n");
10673                 goto out_error;
10674         }
10675         qdesc->chann = cpu;
10676         phba->sli4_hba.els_wq = qdesc;
10677         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
10678
10679         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
10680                 /* Create NVME LS Complete Queue */
10681                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10682                                               phba->sli4_hba.cq_esize,
10683                                               phba->sli4_hba.cq_ecount, cpu);
10684                 if (!qdesc) {
10685                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10686                                         "6079 Failed allocate NVME LS CQ\n");
10687                         goto out_error;
10688                 }
10689                 qdesc->chann = cpu;
10690                 qdesc->qe_valid = 1;
10691                 phba->sli4_hba.nvmels_cq = qdesc;
10692
10693                 /* Create NVME LS Work Queue */
10694                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10695                                               phba->sli4_hba.wq_esize,
10696                                               phba->sli4_hba.wq_ecount, cpu);
10697                 if (!qdesc) {
10698                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10699                                         "6080 Failed allocate NVME LS WQ\n");
10700                         goto out_error;
10701                 }
10702                 qdesc->chann = cpu;
10703                 phba->sli4_hba.nvmels_wq = qdesc;
10704                 list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
10705         }
10706
10707         /*
10708          * Create Receive Queue (RQ)
10709          */
10710
10711         /* Create Receive Queue for header */
10712         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10713                                       phba->sli4_hba.rq_esize,
10714                                       phba->sli4_hba.rq_ecount, cpu);
10715         if (!qdesc) {
10716                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10717                                 "0506 Failed allocate receive HRQ\n");
10718                 goto out_error;
10719         }
10720         phba->sli4_hba.hdr_rq = qdesc;
10721
10722         /* Create Receive Queue for data */
10723         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10724                                       phba->sli4_hba.rq_esize,
10725                                       phba->sli4_hba.rq_ecount, cpu);
10726         if (!qdesc) {
10727                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10728                                 "0507 Failed allocate receive DRQ\n");
10729                 goto out_error;
10730         }
10731         phba->sli4_hba.dat_rq = qdesc;
10732
10733         if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&
10734             phba->nvmet_support) {
10735                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
10736                         cpu = lpfc_find_cpu_handle(phba, idx,
10737                                                    LPFC_FIND_BY_HDWQ);
10738                         /* Create NVMET Receive Queue for header */
10739                         qdesc = lpfc_sli4_queue_alloc(phba,
10740                                                       LPFC_DEFAULT_PAGE_SIZE,
10741                                                       phba->sli4_hba.rq_esize,
10742                                                       LPFC_NVMET_RQE_DEF_COUNT,
10743                                                       cpu);
10744                         if (!qdesc) {
10745                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10746                                                 "3146 Failed allocate "
10747                                                 "receive HRQ\n");
10748                                 goto out_error;
10749                         }
10750                         qdesc->hdwq = idx;
10751                         phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;
10752
10753                         /* Only needed for header of RQ pair */
10754                         qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),
10755                                                    GFP_KERNEL,
10756                                                    cpu_to_node(cpu));
10757                         if (qdesc->rqbp == NULL) {
10758                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10759                                                 "6131 Failed allocate "
10760                                                 "Header RQBP\n");
10761                                 goto out_error;
10762                         }
10763
10764                         /* Put list in known state in case driver load fails. */
10765                         INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);
10766
10767                         /* Create NVMET Receive Queue for data */
10768                         qdesc = lpfc_sli4_queue_alloc(phba,
10769                                                       LPFC_DEFAULT_PAGE_SIZE,
10770                                                       phba->sli4_hba.rq_esize,
10771                                                       LPFC_NVMET_RQE_DEF_COUNT,
10772                                                       cpu);
10773                         if (!qdesc) {
10774                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10775                                                 "3156 Failed allocate "
10776                                                 "receive DRQ\n");
10777                                 goto out_error;
10778                         }
10779                         qdesc->hdwq = idx;
10780                         phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;
10781                 }
10782         }
10783
10784         /* Clear NVME stats */
10785         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
10786                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10787                         memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,
10788                                sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));
10789                 }
10790         }
10791
10792         /* Clear SCSI stats */
10793         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
10794                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10795                         memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,
10796                                sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));
10797                 }
10798         }
10799
10800         return 0;
10801
10802 out_error:
10803         lpfc_sli4_queue_destroy(phba);
10804         return -ENOMEM;
10805 }
10806
10807 static inline void
10808 __lpfc_sli4_release_queue(struct lpfc_queue **qp)
10809 {
10810         if (*qp != NULL) {
10811                 lpfc_sli4_queue_free(*qp);
10812                 *qp = NULL;
10813         }
10814 }
10815
10816 static inline void
10817 lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)
10818 {
10819         int idx;
10820
10821         if (*qs == NULL)
10822                 return;
10823
10824         for (idx = 0; idx < max; idx++)
10825                 __lpfc_sli4_release_queue(&(*qs)[idx]);
10826
10827         kfree(*qs);
10828         *qs = NULL;
10829 }
10830
10831 static inline void
10832 lpfc_sli4_release_hdwq(struct lpfc_hba *phba)
10833 {
10834         struct lpfc_sli4_hdw_queue *hdwq;
10835         struct lpfc_queue *eq;
10836         uint32_t idx;
10837
10838         hdwq = phba->sli4_hba.hdwq;
10839
10840         /* Loop thru all Hardware Queues */
10841         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10842                 /* Free the CQ/WQ corresponding to the Hardware Queue */
10843                 lpfc_sli4_queue_free(hdwq[idx].io_cq);
10844                 lpfc_sli4_queue_free(hdwq[idx].io_wq);
10845                 hdwq[idx].hba_eq = NULL;
10846                 hdwq[idx].io_cq = NULL;
10847                 hdwq[idx].io_wq = NULL;
10848                 if (phba->cfg_xpsgl && !phba->nvmet_support)
10849                         lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
10850                 lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
10851         }
10852         /* Loop thru all IRQ vectors */
10853         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
10854                 /* Free the EQ corresponding to the IRQ vector */
10855                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
10856                 lpfc_sli4_queue_free(eq);
10857                 phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
10858         }
10859 }
10860
10861 /**
10862  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
10863  * @phba: pointer to lpfc hba data structure.
10864  *
10865  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
10866  * operation.
10867  *
10868  * Return codes
10869  *      0 - successful
10870  *      -ENOMEM - No available memory
10871  *      -EIO - The mailbox failed to complete successfully.
10872  **/
10873 void
10874 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
10875 {
10876         /*
10877          * Set FREE_INIT before beginning to free the queues.
10878          * Wait until the users of queues to acknowledge to
10879          * release queues by clearing FREE_WAIT.
10880          */
10881         spin_lock_irq(&phba->hbalock);
10882         phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;
10883         while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
10884                 spin_unlock_irq(&phba->hbalock);
10885                 msleep(20);
10886                 spin_lock_irq(&phba->hbalock);
10887         }
10888         spin_unlock_irq(&phba->hbalock);
10889
10890         lpfc_sli4_cleanup_poll_list(phba);
10891
10892         /* Release HBA eqs */
10893         if (phba->sli4_hba.hdwq)
10894                 lpfc_sli4_release_hdwq(phba);
10895
10896         if (phba->nvmet_support) {
10897                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
10898                                          phba->cfg_nvmet_mrq);
10899
10900                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,
10901                                          phba->cfg_nvmet_mrq);
10902                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,
10903                                          phba->cfg_nvmet_mrq);
10904         }
10905
10906         /* Release mailbox command work queue */
10907         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);
10908
10909         /* Release ELS work queue */
10910         __lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);
10911
10912         /* Release ELS work queue */
10913         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);
10914
10915         /* Release unsolicited receive queue */
10916         __lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);
10917         __lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);
10918
10919         /* Release ELS complete queue */
10920         __lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);
10921
10922         /* Release NVME LS complete queue */
10923         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);
10924
10925         /* Release mailbox command complete queue */
10926         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);
10927
10928         /* Everything on this list has been freed */
10929         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
10930
10931         /* Done with freeing the queues */
10932         spin_lock_irq(&phba->hbalock);
10933         phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;
10934         spin_unlock_irq(&phba->hbalock);
10935 }
10936
10937 int
10938 lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)
10939 {
10940         struct lpfc_rqb *rqbp;
10941         struct lpfc_dmabuf *h_buf;
10942         struct rqb_dmabuf *rqb_buffer;
10943
10944         rqbp = rq->rqbp;
10945         while (!list_empty(&rqbp->rqb_buffer_list)) {
10946                 list_remove_head(&rqbp->rqb_buffer_list, h_buf,
10947                                  struct lpfc_dmabuf, list);
10948
10949                 rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);
10950                 (rqbp->rqb_free_buffer)(phba, rqb_buffer);
10951                 rqbp->buffer_count--;
10952         }
10953         return 1;
10954 }
10955
10956 static int
10957 lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,
10958         struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,
10959         int qidx, uint32_t qtype)
10960 {
10961         struct lpfc_sli_ring *pring;
10962         int rc;
10963
10964         if (!eq || !cq || !wq) {
10965                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10966                         "6085 Fast-path %s (%d) not allocated\n",
10967                         ((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);
10968                 return -ENOMEM;
10969         }
10970
10971         /* create the Cq first */
10972         rc = lpfc_cq_create(phba, cq, eq,
10973                         (qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);
10974         if (rc) {
10975                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10976                                 "6086 Failed setup of CQ (%d), rc = 0x%x\n",
10977                                 qidx, (uint32_t)rc);
10978                 return rc;
10979         }
10980
10981         if (qtype != LPFC_MBOX) {
10982                 /* Setup cq_map for fast lookup */
10983                 if (cq_map)
10984                         *cq_map = cq->queue_id;
10985
10986                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10987                         "6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",
10988                         qidx, cq->queue_id, qidx, eq->queue_id);
10989
10990                 /* create the wq */
10991                 rc = lpfc_wq_create(phba, wq, cq, qtype);
10992                 if (rc) {
10993                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10994                                 "4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
10995                                 qidx, (uint32_t)rc);
10996                         /* no need to tear down cq - caller will do so */
10997                         return rc;
10998                 }
10999
11000                 /* Bind this CQ/WQ to the NVME ring */
11001                 pring = wq->pring;
11002                 pring->sli.sli4.wqp = (void *)wq;
11003                 cq->pring = pring;
11004
11005                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11006                         "2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
11007                         qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
11008         } else {
11009                 rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);
11010                 if (rc) {
11011                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11012                                         "0539 Failed setup of slow-path MQ: "
11013                                         "rc = 0x%x\n", rc);
11014                         /* no need to tear down cq - caller will do so */
11015                         return rc;
11016                 }
11017
11018                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11019                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
11020                         phba->sli4_hba.mbx_wq->queue_id,
11021                         phba->sli4_hba.mbx_cq->queue_id);
11022         }
11023
11024         return 0;
11025 }
11026
11027 /**
11028  * lpfc_setup_cq_lookup - Setup the CQ lookup table
11029  * @phba: pointer to lpfc hba data structure.
11030  *
11031  * This routine will populate the cq_lookup table by all
11032  * available CQ queue_id's.
11033  **/
11034 static void
11035 lpfc_setup_cq_lookup(struct lpfc_hba *phba)
11036 {
11037         struct lpfc_queue *eq, *childq;
11038         int qidx;
11039
11040         memset(phba->sli4_hba.cq_lookup, 0,
11041                (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));
11042         /* Loop thru all IRQ vectors */
11043         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
11044                 /* Get the EQ corresponding to the IRQ vector */
11045                 eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
11046                 if (!eq)
11047                         continue;
11048                 /* Loop through all CQs associated with that EQ */
11049                 list_for_each_entry(childq, &eq->child_list, list) {
11050                         if (childq->queue_id > phba->sli4_hba.cq_max)
11051                                 continue;
11052                         if (childq->subtype == LPFC_IO)
11053                                 phba->sli4_hba.cq_lookup[childq->queue_id] =
11054                                         childq;
11055                 }
11056         }
11057 }
11058
11059 /**
11060  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
11061  * @phba: pointer to lpfc hba data structure.
11062  *
11063  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
11064  * operation.
11065  *
11066  * Return codes
11067  *      0 - successful
11068  *      -ENOMEM - No available memory
11069  *      -EIO - The mailbox failed to complete successfully.
11070  **/
11071 int
11072 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
11073 {
11074         uint32_t shdr_status, shdr_add_status;
11075         union lpfc_sli4_cfg_shdr *shdr;
11076         struct lpfc_vector_map_info *cpup;
11077         struct lpfc_sli4_hdw_queue *qp;
11078         LPFC_MBOXQ_t *mboxq;
11079         int qidx, cpu;
11080         uint32_t length, usdelay;
11081         int rc = -ENOMEM;
11082
11083         /* Check for dual-ULP support */
11084         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
11085         if (!mboxq) {
11086                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11087                                 "3249 Unable to allocate memory for "
11088                                 "QUERY_FW_CFG mailbox command\n");
11089                 return -ENOMEM;
11090         }
11091         length = (sizeof(struct lpfc_mbx_query_fw_config) -
11092                   sizeof(struct lpfc_sli4_cfg_mhdr));
11093         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
11094                          LPFC_MBOX_OPCODE_QUERY_FW_CFG,
11095                          length, LPFC_SLI4_MBX_EMBED);
11096
11097         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
11098
11099         shdr = (union lpfc_sli4_cfg_shdr *)
11100                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
11101         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
11102         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
11103         if (shdr_status || shdr_add_status || rc) {
11104                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11105                                 "3250 QUERY_FW_CFG mailbox failed with status "
11106                                 "x%x add_status x%x, mbx status x%x\n",
11107                                 shdr_status, shdr_add_status, rc);
11108                 mempool_free(mboxq, phba->mbox_mem_pool);
11109                 rc = -ENXIO;
11110                 goto out_error;
11111         }
11112
11113         phba->sli4_hba.fw_func_mode =
11114                         mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
11115         phba->sli4_hba.physical_port =
11116                         mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;
11117         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11118                         "3251 QUERY_FW_CFG: func_mode:x%x\n",
11119                         phba->sli4_hba.fw_func_mode);
11120
11121         mempool_free(mboxq, phba->mbox_mem_pool);
11122
11123         /*
11124          * Set up HBA Event Queues (EQs)
11125          */
11126         qp = phba->sli4_hba.hdwq;
11127
11128         /* Set up HBA event queue */
11129         if (!qp) {
11130                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11131                                 "3147 Fast-path EQs not allocated\n");
11132                 rc = -ENOMEM;
11133                 goto out_error;
11134         }
11135
11136         /* Loop thru all IRQ vectors */
11137         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
11138                 /* Create HBA Event Queues (EQs) in order */
11139                 for_each_present_cpu(cpu) {
11140                         cpup = &phba->sli4_hba.cpu_map[cpu];
11141
11142                         /* Look for the CPU thats using that vector with
11143                          * LPFC_CPU_FIRST_IRQ set.
11144                          */
11145                         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
11146                                 continue;
11147                         if (qidx != cpup->eq)
11148                                 continue;
11149
11150                         /* Create an EQ for that vector */
11151                         rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
11152                                             phba->cfg_fcp_imax);
11153                         if (rc) {
11154                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11155                                                 "0523 Failed setup of fast-path"
11156                                                 " EQ (%d), rc = 0x%x\n",
11157                                                 cpup->eq, (uint32_t)rc);
11158                                 goto out_destroy;
11159                         }
11160
11161                         /* Save the EQ for that vector in the hba_eq_hdl */
11162                         phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
11163                                 qp[cpup->hdwq].hba_eq;
11164
11165                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11166                                         "2584 HBA EQ setup: queue[%d]-id=%d\n",
11167                                         cpup->eq,
11168                                         qp[cpup->hdwq].hba_eq->queue_id);
11169                 }
11170         }
11171
11172         /* Loop thru all Hardware Queues */
11173         for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
11174                 cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);
11175                 cpup = &phba->sli4_hba.cpu_map[cpu];
11176
11177                 /* Create the CQ/WQ corresponding to the Hardware Queue */
11178                 rc = lpfc_create_wq_cq(phba,
11179                                        phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,
11180                                        qp[qidx].io_cq,
11181                                        qp[qidx].io_wq,
11182                                        &phba->sli4_hba.hdwq[qidx].io_cq_map,
11183                                        qidx,
11184                                        LPFC_IO);
11185                 if (rc) {
11186                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11187                                         "0535 Failed to setup fastpath "
11188                                         "IO WQ/CQ (%d), rc = 0x%x\n",
11189                                         qidx, (uint32_t)rc);
11190                         goto out_destroy;
11191                 }
11192         }
11193
11194         /*
11195          * Set up Slow Path Complete Queues (CQs)
11196          */
11197
11198         /* Set up slow-path MBOX CQ/MQ */
11199
11200         if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {
11201                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11202                                 "0528 %s not allocated\n",
11203                                 phba->sli4_hba.mbx_cq ?
11204                                 "Mailbox WQ" : "Mailbox CQ");
11205                 rc = -ENOMEM;
11206                 goto out_destroy;
11207         }
11208
11209         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
11210                                phba->sli4_hba.mbx_cq,
11211                                phba->sli4_hba.mbx_wq,
11212                                NULL, 0, LPFC_MBOX);
11213         if (rc) {
11214                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11215                         "0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",
11216                         (uint32_t)rc);
11217                 goto out_destroy;
11218         }
11219         if (phba->nvmet_support) {
11220                 if (!phba->sli4_hba.nvmet_cqset) {
11221                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11222                                         "3165 Fast-path NVME CQ Set "
11223                                         "array not allocated\n");
11224                         rc = -ENOMEM;
11225                         goto out_destroy;
11226                 }
11227                 if (phba->cfg_nvmet_mrq > 1) {
11228                         rc = lpfc_cq_create_set(phba,
11229                                         phba->sli4_hba.nvmet_cqset,
11230                                         qp,
11231                                         LPFC_WCQ, LPFC_NVMET);
11232                         if (rc) {
11233                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11234                                                 "3164 Failed setup of NVME CQ "
11235                                                 "Set, rc = 0x%x\n",
11236                                                 (uint32_t)rc);
11237                                 goto out_destroy;
11238                         }
11239                 } else {
11240                         /* Set up NVMET Receive Complete Queue */
11241                         rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],
11242                                             qp[0].hba_eq,
11243                                             LPFC_WCQ, LPFC_NVMET);
11244                         if (rc) {
11245                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11246                                                 "6089 Failed setup NVMET CQ: "
11247                                                 "rc = 0x%x\n", (uint32_t)rc);
11248                                 goto out_destroy;
11249                         }
11250                         phba->sli4_hba.nvmet_cqset[0]->chann = 0;
11251
11252                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11253                                         "6090 NVMET CQ setup: cq-id=%d, "
11254                                         "parent eq-id=%d\n",
11255                                         phba->sli4_hba.nvmet_cqset[0]->queue_id,
11256                                         qp[0].hba_eq->queue_id);
11257                 }
11258         }
11259
11260         /* Set up slow-path ELS WQ/CQ */
11261         if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {
11262                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11263                                 "0530 ELS %s not allocated\n",
11264                                 phba->sli4_hba.els_cq ? "WQ" : "CQ");
11265                 rc = -ENOMEM;
11266                 goto out_destroy;
11267         }
11268         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
11269                                phba->sli4_hba.els_cq,
11270                                phba->sli4_hba.els_wq,
11271                                NULL, 0, LPFC_ELS);
11272         if (rc) {
11273                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11274                                 "0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",
11275                                 (uint32_t)rc);
11276                 goto out_destroy;
11277         }
11278         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11279                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
11280                         phba->sli4_hba.els_wq->queue_id,
11281                         phba->sli4_hba.els_cq->queue_id);
11282
11283         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11284                 /* Set up NVME LS Complete Queue */
11285                 if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {
11286                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11287                                         "6091 LS %s not allocated\n",
11288                                         phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");
11289                         rc = -ENOMEM;
11290                         goto out_destroy;
11291                 }
11292                 rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
11293                                        phba->sli4_hba.nvmels_cq,
11294                                        phba->sli4_hba.nvmels_wq,
11295                                        NULL, 0, LPFC_NVME_LS);
11296                 if (rc) {
11297                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11298                                         "0526 Failed setup of NVVME LS WQ/CQ: "
11299                                         "rc = 0x%x\n", (uint32_t)rc);
11300                         goto out_destroy;
11301                 }
11302
11303                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11304                                 "6096 ELS WQ setup: wq-id=%d, "
11305                                 "parent cq-id=%d\n",
11306                                 phba->sli4_hba.nvmels_wq->queue_id,
11307                                 phba->sli4_hba.nvmels_cq->queue_id);
11308         }
11309
11310         /*
11311          * Create NVMET Receive Queue (RQ)
11312          */
11313         if (phba->nvmet_support) {
11314                 if ((!phba->sli4_hba.nvmet_cqset) ||
11315                     (!phba->sli4_hba.nvmet_mrq_hdr) ||
11316                     (!phba->sli4_hba.nvmet_mrq_data)) {
11317                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11318                                         "6130 MRQ CQ Queues not "
11319                                         "allocated\n");
11320                         rc = -ENOMEM;
11321                         goto out_destroy;
11322                 }
11323                 if (phba->cfg_nvmet_mrq > 1) {
11324                         rc = lpfc_mrq_create(phba,
11325                                              phba->sli4_hba.nvmet_mrq_hdr,
11326                                              phba->sli4_hba.nvmet_mrq_data,
11327                                              phba->sli4_hba.nvmet_cqset,
11328                                              LPFC_NVMET);
11329                         if (rc) {
11330                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11331                                                 "6098 Failed setup of NVMET "
11332                                                 "MRQ: rc = 0x%x\n",
11333                                                 (uint32_t)rc);
11334                                 goto out_destroy;
11335                         }
11336
11337                 } else {
11338                         rc = lpfc_rq_create(phba,
11339                                             phba->sli4_hba.nvmet_mrq_hdr[0],
11340                                             phba->sli4_hba.nvmet_mrq_data[0],
11341                                             phba->sli4_hba.nvmet_cqset[0],
11342                                             LPFC_NVMET);
11343                         if (rc) {
11344                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11345                                                 "6057 Failed setup of NVMET "
11346                                                 "Receive Queue: rc = 0x%x\n",
11347                                                 (uint32_t)rc);
11348                                 goto out_destroy;
11349                         }
11350
11351                         lpfc_printf_log(
11352                                 phba, KERN_INFO, LOG_INIT,
11353                                 "6099 NVMET RQ setup: hdr-rq-id=%d, "
11354                                 "dat-rq-id=%d parent cq-id=%d\n",
11355                                 phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,
11356                                 phba->sli4_hba.nvmet_mrq_data[0]->queue_id,
11357                                 phba->sli4_hba.nvmet_cqset[0]->queue_id);
11358
11359                 }
11360         }
11361
11362         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
11363                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11364                                 "0540 Receive Queue not allocated\n");
11365                 rc = -ENOMEM;
11366                 goto out_destroy;
11367         }
11368
11369         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
11370                             phba->sli4_hba.els_cq, LPFC_USOL);
11371         if (rc) {
11372                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11373                                 "0541 Failed setup of Receive Queue: "
11374                                 "rc = 0x%x\n", (uint32_t)rc);
11375                 goto out_destroy;
11376         }
11377
11378         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11379                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
11380                         "parent cq-id=%d\n",
11381                         phba->sli4_hba.hdr_rq->queue_id,
11382                         phba->sli4_hba.dat_rq->queue_id,
11383                         phba->sli4_hba.els_cq->queue_id);
11384
11385         if (phba->cfg_fcp_imax)
11386                 usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
11387         else
11388                 usdelay = 0;
11389
11390         for (qidx = 0; qidx < phba->cfg_irq_chann;
11391              qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)
11392                 lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,
11393                                          usdelay);
11394
11395         if (phba->sli4_hba.cq_max) {
11396                 kfree(phba->sli4_hba.cq_lookup);
11397                 phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),
11398                         sizeof(struct lpfc_queue *), GFP_KERNEL);
11399                 if (!phba->sli4_hba.cq_lookup) {
11400                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11401                                         "0549 Failed setup of CQ Lookup table: "
11402                                         "size 0x%x\n", phba->sli4_hba.cq_max);
11403                         rc = -ENOMEM;
11404                         goto out_destroy;
11405                 }
11406                 lpfc_setup_cq_lookup(phba);
11407         }
11408         return 0;
11409
11410 out_destroy:
11411         lpfc_sli4_queue_unset(phba);
11412 out_error:
11413         return rc;
11414 }
11415
11416 /**
11417  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
11418  * @phba: pointer to lpfc hba data structure.
11419  *
11420  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
11421  * operation.
11422  *
11423  * Return codes
11424  *      0 - successful
11425  *      -ENOMEM - No available memory
11426  *      -EIO - The mailbox failed to complete successfully.
11427  **/
11428 void
11429 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
11430 {
11431         struct lpfc_sli4_hdw_queue *qp;
11432         struct lpfc_queue *eq;
11433         int qidx;
11434
11435         /* Unset mailbox command work queue */
11436         if (phba->sli4_hba.mbx_wq)
11437                 lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
11438
11439         /* Unset NVME LS work queue */
11440         if (phba->sli4_hba.nvmels_wq)
11441                 lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
11442
11443         /* Unset ELS work queue */
11444         if (phba->sli4_hba.els_wq)
11445                 lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
11446
11447         /* Unset unsolicited receive queue */
11448         if (phba->sli4_hba.hdr_rq)
11449                 lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,
11450                                 phba->sli4_hba.dat_rq);
11451
11452         /* Unset mailbox command complete queue */
11453         if (phba->sli4_hba.mbx_cq)
11454                 lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
11455
11456         /* Unset ELS complete queue */
11457         if (phba->sli4_hba.els_cq)
11458                 lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
11459
11460         /* Unset NVME LS complete queue */
11461         if (phba->sli4_hba.nvmels_cq)
11462                 lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);
11463
11464         if (phba->nvmet_support) {
11465                 /* Unset NVMET MRQ queue */
11466                 if (phba->sli4_hba.nvmet_mrq_hdr) {
11467                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
11468                                 lpfc_rq_destroy(
11469                                         phba,
11470                                         phba->sli4_hba.nvmet_mrq_hdr[qidx],
11471                                         phba->sli4_hba.nvmet_mrq_data[qidx]);
11472                 }
11473
11474                 /* Unset NVMET CQ Set complete queue */
11475                 if (phba->sli4_hba.nvmet_cqset) {
11476                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
11477                                 lpfc_cq_destroy(
11478                                         phba, phba->sli4_hba.nvmet_cqset[qidx]);
11479                 }
11480         }
11481
11482         /* Unset fast-path SLI4 queues */
11483         if (phba->sli4_hba.hdwq) {
11484                 /* Loop thru all Hardware Queues */
11485                 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
11486                         /* Destroy the CQ/WQ corresponding to Hardware Queue */
11487                         qp = &phba->sli4_hba.hdwq[qidx];
11488                         lpfc_wq_destroy(phba, qp->io_wq);
11489                         lpfc_cq_destroy(phba, qp->io_cq);
11490                 }
11491                 /* Loop thru all IRQ vectors */
11492                 for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
11493                         /* Destroy the EQ corresponding to the IRQ vector */
11494                         eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
11495                         lpfc_eq_destroy(phba, eq);
11496                 }
11497         }
11498
11499         kfree(phba->sli4_hba.cq_lookup);
11500         phba->sli4_hba.cq_lookup = NULL;
11501         phba->sli4_hba.cq_max = 0;
11502 }
11503
11504 /**
11505  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
11506  * @phba: pointer to lpfc hba data structure.
11507  *
11508  * This routine is invoked to allocate and set up a pool of completion queue
11509  * events. The body of the completion queue event is a completion queue entry
11510  * CQE. For now, this pool is used for the interrupt service routine to queue
11511  * the following HBA completion queue events for the worker thread to process:
11512  *   - Mailbox asynchronous events
11513  *   - Receive queue completion unsolicited events
11514  * Later, this can be used for all the slow-path events.
11515  *
11516  * Return codes
11517  *      0 - successful
11518  *      -ENOMEM - No available memory
11519  **/
11520 static int
11521 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
11522 {
11523         struct lpfc_cq_event *cq_event;
11524         int i;
11525
11526         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
11527                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
11528                 if (!cq_event)
11529                         goto out_pool_create_fail;
11530                 list_add_tail(&cq_event->list,
11531                               &phba->sli4_hba.sp_cqe_event_pool);
11532         }
11533         return 0;
11534
11535 out_pool_create_fail:
11536         lpfc_sli4_cq_event_pool_destroy(phba);
11537         return -ENOMEM;
11538 }
11539
11540 /**
11541  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
11542  * @phba: pointer to lpfc hba data structure.
11543  *
11544  * This routine is invoked to free the pool of completion queue events at
11545  * driver unload time. Note that, it is the responsibility of the driver
11546  * cleanup routine to free all the outstanding completion-queue events
11547  * allocated from this pool back into the pool before invoking this routine
11548  * to destroy the pool.
11549  **/
11550 static void
11551 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
11552 {
11553         struct lpfc_cq_event *cq_event, *next_cq_event;
11554
11555         list_for_each_entry_safe(cq_event, next_cq_event,
11556                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
11557                 list_del(&cq_event->list);
11558                 kfree(cq_event);
11559         }
11560 }
11561
11562 /**
11563  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
11564  * @phba: pointer to lpfc hba data structure.
11565  *
11566  * This routine is the lock free version of the API invoked to allocate a
11567  * completion-queue event from the free pool.
11568  *
11569  * Return: Pointer to the newly allocated completion-queue event if successful
11570  *         NULL otherwise.
11571  **/
11572 struct lpfc_cq_event *
11573 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
11574 {
11575         struct lpfc_cq_event *cq_event = NULL;
11576
11577         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
11578                          struct lpfc_cq_event, list);
11579         return cq_event;
11580 }
11581
11582 /**
11583  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
11584  * @phba: pointer to lpfc hba data structure.
11585  *
11586  * This routine is the lock version of the API invoked to allocate a
11587  * completion-queue event from the free pool.
11588  *
11589  * Return: Pointer to the newly allocated completion-queue event if successful
11590  *         NULL otherwise.
11591  **/
11592 struct lpfc_cq_event *
11593 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
11594 {
11595         struct lpfc_cq_event *cq_event;
11596         unsigned long iflags;
11597
11598         spin_lock_irqsave(&phba->hbalock, iflags);
11599         cq_event = __lpfc_sli4_cq_event_alloc(phba);
11600         spin_unlock_irqrestore(&phba->hbalock, iflags);
11601         return cq_event;
11602 }
11603
11604 /**
11605  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
11606  * @phba: pointer to lpfc hba data structure.
11607  * @cq_event: pointer to the completion queue event to be freed.
11608  *
11609  * This routine is the lock free version of the API invoked to release a
11610  * completion-queue event back into the free pool.
11611  **/
11612 void
11613 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
11614                              struct lpfc_cq_event *cq_event)
11615 {
11616         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
11617 }
11618
11619 /**
11620  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
11621  * @phba: pointer to lpfc hba data structure.
11622  * @cq_event: pointer to the completion queue event to be freed.
11623  *
11624  * This routine is the lock version of the API invoked to release a
11625  * completion-queue event back into the free pool.
11626  **/
11627 void
11628 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
11629                            struct lpfc_cq_event *cq_event)
11630 {
11631         unsigned long iflags;
11632         spin_lock_irqsave(&phba->hbalock, iflags);
11633         __lpfc_sli4_cq_event_release(phba, cq_event);
11634         spin_unlock_irqrestore(&phba->hbalock, iflags);
11635 }
11636
11637 /**
11638  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
11639  * @phba: pointer to lpfc hba data structure.
11640  *
11641  * This routine is to free all the pending completion-queue events to the
11642  * back into the free pool for device reset.
11643  **/
11644 static void
11645 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
11646 {
11647         LIST_HEAD(cq_event_list);
11648         struct lpfc_cq_event *cq_event;
11649         unsigned long iflags;
11650
11651         /* Retrieve all the pending WCQEs from pending WCQE lists */
11652
11653         /* Pending ELS XRI abort events */
11654         spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
11655         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
11656                          &cq_event_list);
11657         spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
11658
11659         /* Pending asynnc events */
11660         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
11661         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
11662                          &cq_event_list);
11663         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
11664
11665         while (!list_empty(&cq_event_list)) {
11666                 list_remove_head(&cq_event_list, cq_event,
11667                                  struct lpfc_cq_event, list);
11668                 lpfc_sli4_cq_event_release(phba, cq_event);
11669         }
11670 }
11671
11672 /**
11673  * lpfc_pci_function_reset - Reset pci function.
11674  * @phba: pointer to lpfc hba data structure.
11675  *
11676  * This routine is invoked to request a PCI function reset. It will destroys
11677  * all resources assigned to the PCI function which originates this request.
11678  *
11679  * Return codes
11680  *      0 - successful
11681  *      -ENOMEM - No available memory
11682  *      -EIO - The mailbox failed to complete successfully.
11683  **/
11684 int
11685 lpfc_pci_function_reset(struct lpfc_hba *phba)
11686 {
11687         LPFC_MBOXQ_t *mboxq;
11688         uint32_t rc = 0, if_type;
11689         uint32_t shdr_status, shdr_add_status;
11690         uint32_t rdy_chk;
11691         uint32_t port_reset = 0;
11692         union lpfc_sli4_cfg_shdr *shdr;
11693         struct lpfc_register reg_data;
11694         uint16_t devid;
11695
11696         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
11697         switch (if_type) {
11698         case LPFC_SLI_INTF_IF_TYPE_0:
11699                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
11700                                                        GFP_KERNEL);
11701                 if (!mboxq) {
11702                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11703                                         "0494 Unable to allocate memory for "
11704                                         "issuing SLI_FUNCTION_RESET mailbox "
11705                                         "command\n");
11706                         return -ENOMEM;
11707                 }
11708
11709                 /* Setup PCI function reset mailbox-ioctl command */
11710                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
11711                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
11712                                  LPFC_SLI4_MBX_EMBED);
11713                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
11714                 shdr = (union lpfc_sli4_cfg_shdr *)
11715                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
11716                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
11717                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
11718                                          &shdr->response);
11719                 mempool_free(mboxq, phba->mbox_mem_pool);
11720                 if (shdr_status || shdr_add_status || rc) {
11721                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11722                                         "0495 SLI_FUNCTION_RESET mailbox "
11723                                         "failed with status x%x add_status x%x,"
11724                                         " mbx status x%x\n",
11725                                         shdr_status, shdr_add_status, rc);
11726                         rc = -ENXIO;
11727                 }
11728                 break;
11729         case LPFC_SLI_INTF_IF_TYPE_2:
11730         case LPFC_SLI_INTF_IF_TYPE_6:
11731 wait:
11732                 /*
11733                  * Poll the Port Status Register and wait for RDY for
11734                  * up to 30 seconds. If the port doesn't respond, treat
11735                  * it as an error.
11736                  */
11737                 for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {
11738                         if (lpfc_readl(phba->sli4_hba.u.if_type2.
11739                                 STATUSregaddr, &reg_data.word0)) {
11740                                 rc = -ENODEV;
11741                                 goto out;
11742                         }
11743                         if (bf_get(lpfc_sliport_status_rdy, &reg_data))
11744                                 break;
11745                         msleep(20);
11746                 }
11747
11748                 if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
11749                         phba->work_status[0] = readl(
11750                                 phba->sli4_hba.u.if_type2.ERR1regaddr);
11751                         phba->work_status[1] = readl(
11752                                 phba->sli4_hba.u.if_type2.ERR2regaddr);
11753                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11754                                         "2890 Port not ready, port status reg "
11755                                         "0x%x error 1=0x%x, error 2=0x%x\n",
11756                                         reg_data.word0,
11757                                         phba->work_status[0],
11758                                         phba->work_status[1]);
11759                         rc = -ENODEV;
11760                         goto out;
11761                 }
11762
11763                 if (bf_get(lpfc_sliport_status_pldv, &reg_data))
11764                         lpfc_pldv_detect = true;
11765
11766                 if (!port_reset) {
11767                         /*
11768                          * Reset the port now
11769                          */
11770                         reg_data.word0 = 0;
11771                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
11772                                LPFC_SLIPORT_LITTLE_ENDIAN);
11773                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
11774                                LPFC_SLIPORT_INIT_PORT);
11775                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
11776                                CTRLregaddr);
11777                         /* flush */
11778                         pci_read_config_word(phba->pcidev,
11779                                              PCI_DEVICE_ID, &devid);
11780
11781                         port_reset = 1;
11782                         msleep(20);
11783                         goto wait;
11784                 } else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
11785                         rc = -ENODEV;
11786                         goto out;
11787                 }
11788                 break;
11789
11790         case LPFC_SLI_INTF_IF_TYPE_1:
11791         default:
11792                 break;
11793         }
11794
11795 out:
11796         /* Catch the not-ready port failure after a port reset. */
11797         if (rc) {
11798                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11799                                 "3317 HBA not functional: IP Reset Failed "
11800                                 "try: echo fw_reset > board_mode\n");
11801                 rc = -ENODEV;
11802         }
11803
11804         return rc;
11805 }
11806
11807 /**
11808  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
11809  * @phba: pointer to lpfc hba data structure.
11810  *
11811  * This routine is invoked to set up the PCI device memory space for device
11812  * with SLI-4 interface spec.
11813  *
11814  * Return codes
11815  *      0 - successful
11816  *      other values - error
11817  **/
11818 static int
11819 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
11820 {
11821         struct pci_dev *pdev = phba->pcidev;
11822         unsigned long bar0map_len, bar1map_len, bar2map_len;
11823         int error;
11824         uint32_t if_type;
11825
11826         if (!pdev)
11827                 return -ENODEV;
11828
11829         /* Set the device DMA mask size */
11830         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
11831         if (error)
11832                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
11833         if (error)
11834                 return error;
11835
11836         /*
11837          * The BARs and register set definitions and offset locations are
11838          * dependent on the if_type.
11839          */
11840         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
11841                                   &phba->sli4_hba.sli_intf.word0)) {
11842                 return -ENODEV;
11843         }
11844
11845         /* There is no SLI3 failback for SLI4 devices. */
11846         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
11847             LPFC_SLI_INTF_VALID) {
11848                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11849                                 "2894 SLI_INTF reg contents invalid "
11850                                 "sli_intf reg 0x%x\n",
11851                                 phba->sli4_hba.sli_intf.word0);
11852                 return -ENODEV;
11853         }
11854
11855         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
11856         /*
11857          * Get the bus address of SLI4 device Bar regions and the
11858          * number of bytes required by each mapping. The mapping of the
11859          * particular PCI BARs regions is dependent on the type of
11860          * SLI4 device.
11861          */
11862         if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {
11863                 phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
11864                 bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
11865
11866                 /*
11867                  * Map SLI4 PCI Config Space Register base to a kernel virtual
11868                  * addr
11869                  */
11870                 phba->sli4_hba.conf_regs_memmap_p =
11871                         ioremap(phba->pci_bar0_map, bar0map_len);
11872                 if (!phba->sli4_hba.conf_regs_memmap_p) {
11873                         dev_printk(KERN_ERR, &pdev->dev,
11874                                    "ioremap failed for SLI4 PCI config "
11875                                    "registers.\n");
11876                         return -ENODEV;
11877                 }
11878                 phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;
11879                 /* Set up BAR0 PCI config space register memory map */
11880                 lpfc_sli4_bar0_register_memmap(phba, if_type);
11881         } else {
11882                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
11883                 bar0map_len = pci_resource_len(pdev, 1);
11884                 if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
11885                         dev_printk(KERN_ERR, &pdev->dev,
11886                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
11887                         return -ENODEV;
11888                 }
11889                 phba->sli4_hba.conf_regs_memmap_p =
11890                                 ioremap(phba->pci_bar0_map, bar0map_len);
11891                 if (!phba->sli4_hba.conf_regs_memmap_p) {
11892                         dev_printk(KERN_ERR, &pdev->dev,
11893                                 "ioremap failed for SLI4 PCI config "
11894                                 "registers.\n");
11895                         return -ENODEV;
11896                 }
11897                 lpfc_sli4_bar0_register_memmap(phba, if_type);
11898         }
11899
11900         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
11901                 if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {
11902                         /*
11903                          * Map SLI4 if type 0 HBA Control Register base to a
11904                          * kernel virtual address and setup the registers.
11905                          */
11906                         phba->pci_bar1_map = pci_resource_start(pdev,
11907                                                                 PCI_64BIT_BAR2);
11908                         bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
11909                         phba->sli4_hba.ctrl_regs_memmap_p =
11910                                         ioremap(phba->pci_bar1_map,
11911                                                 bar1map_len);
11912                         if (!phba->sli4_hba.ctrl_regs_memmap_p) {
11913                                 dev_err(&pdev->dev,
11914                                            "ioremap failed for SLI4 HBA "
11915                                             "control registers.\n");
11916                                 error = -ENOMEM;
11917                                 goto out_iounmap_conf;
11918                         }
11919                         phba->pci_bar2_memmap_p =
11920                                          phba->sli4_hba.ctrl_regs_memmap_p;
11921                         lpfc_sli4_bar1_register_memmap(phba, if_type);
11922                 } else {
11923                         error = -ENOMEM;
11924                         goto out_iounmap_conf;
11925                 }
11926         }
11927
11928         if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
11929             (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
11930                 /*
11931                  * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
11932                  * virtual address and setup the registers.
11933                  */
11934                 phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
11935                 bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
11936                 phba->sli4_hba.drbl_regs_memmap_p =
11937                                 ioremap(phba->pci_bar1_map, bar1map_len);
11938                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
11939                         dev_err(&pdev->dev,
11940                            "ioremap failed for SLI4 HBA doorbell registers.\n");
11941                         error = -ENOMEM;
11942                         goto out_iounmap_conf;
11943                 }
11944                 phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
11945                 lpfc_sli4_bar1_register_memmap(phba, if_type);
11946         }
11947
11948         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
11949                 if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
11950                         /*
11951                          * Map SLI4 if type 0 HBA Doorbell Register base to
11952                          * a kernel virtual address and setup the registers.
11953                          */
11954                         phba->pci_bar2_map = pci_resource_start(pdev,
11955                                                                 PCI_64BIT_BAR4);
11956                         bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
11957                         phba->sli4_hba.drbl_regs_memmap_p =
11958                                         ioremap(phba->pci_bar2_map,
11959                                                 bar2map_len);
11960                         if (!phba->sli4_hba.drbl_regs_memmap_p) {
11961                                 dev_err(&pdev->dev,
11962                                            "ioremap failed for SLI4 HBA"
11963                                            " doorbell registers.\n");
11964                                 error = -ENOMEM;
11965                                 goto out_iounmap_ctrl;
11966                         }
11967                         phba->pci_bar4_memmap_p =
11968                                         phba->sli4_hba.drbl_regs_memmap_p;
11969                         error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
11970                         if (error)
11971                                 goto out_iounmap_all;
11972                 } else {
11973                         error = -ENOMEM;
11974                         goto out_iounmap_ctrl;
11975                 }
11976         }
11977
11978         if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
11979             pci_resource_start(pdev, PCI_64BIT_BAR4)) {
11980                 /*
11981                  * Map SLI4 if type 6 HBA DPP Register base to a kernel
11982                  * virtual address and setup the registers.
11983                  */
11984                 phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
11985                 bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
11986                 phba->sli4_hba.dpp_regs_memmap_p =
11987                                 ioremap(phba->pci_bar2_map, bar2map_len);
11988                 if (!phba->sli4_hba.dpp_regs_memmap_p) {
11989                         dev_err(&pdev->dev,
11990                            "ioremap failed for SLI4 HBA dpp registers.\n");
11991                         error = -ENOMEM;
11992                         goto out_iounmap_all;
11993                 }
11994                 phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
11995         }
11996
11997         /* Set up the EQ/CQ register handeling functions now */
11998         switch (if_type) {
11999         case LPFC_SLI_INTF_IF_TYPE_0:
12000         case LPFC_SLI_INTF_IF_TYPE_2:
12001                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
12002                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
12003                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;
12004                 break;
12005         case LPFC_SLI_INTF_IF_TYPE_6:
12006                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
12007                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
12008                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;
12009                 break;
12010         default:
12011                 break;
12012         }
12013
12014         return 0;
12015
12016 out_iounmap_all:
12017         if (phba->sli4_hba.drbl_regs_memmap_p)
12018                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
12019 out_iounmap_ctrl:
12020         if (phba->sli4_hba.ctrl_regs_memmap_p)
12021                 iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
12022 out_iounmap_conf:
12023         iounmap(phba->sli4_hba.conf_regs_memmap_p);
12024
12025         return error;
12026 }
12027
12028 /**
12029  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
12030  * @phba: pointer to lpfc hba data structure.
12031  *
12032  * This routine is invoked to unset the PCI device memory space for device
12033  * with SLI-4 interface spec.
12034  **/
12035 static void
12036 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
12037 {
12038         uint32_t if_type;
12039         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
12040
12041         switch (if_type) {
12042         case LPFC_SLI_INTF_IF_TYPE_0:
12043                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
12044                 iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
12045                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
12046                 break;
12047         case LPFC_SLI_INTF_IF_TYPE_2:
12048                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
12049                 break;
12050         case LPFC_SLI_INTF_IF_TYPE_6:
12051                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
12052                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
12053                 if (phba->sli4_hba.dpp_regs_memmap_p)
12054                         iounmap(phba->sli4_hba.dpp_regs_memmap_p);
12055                 break;
12056         case LPFC_SLI_INTF_IF_TYPE_1:
12057                 break;
12058         default:
12059                 dev_printk(KERN_ERR, &phba->pcidev->dev,
12060                            "FATAL - unsupported SLI4 interface type - %d\n",
12061                            if_type);
12062                 break;
12063         }
12064 }
12065
12066 /**
12067  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
12068  * @phba: pointer to lpfc hba data structure.
12069  *
12070  * This routine is invoked to enable the MSI-X interrupt vectors to device
12071  * with SLI-3 interface specs.
12072  *
12073  * Return codes
12074  *   0 - successful
12075  *   other values - error
12076  **/
12077 static int
12078 lpfc_sli_enable_msix(struct lpfc_hba *phba)
12079 {
12080         int rc;
12081         LPFC_MBOXQ_t *pmb;
12082
12083         /* Set up MSI-X multi-message vectors */
12084         rc = pci_alloc_irq_vectors(phba->pcidev,
12085                         LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);
12086         if (rc < 0) {
12087                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12088                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
12089                 goto vec_fail_out;
12090         }
12091
12092         /*
12093          * Assign MSI-X vectors to interrupt handlers
12094          */
12095
12096         /* vector-0 is associated to slow-path handler */
12097         rc = request_irq(pci_irq_vector(phba->pcidev, 0),
12098                          &lpfc_sli_sp_intr_handler, 0,
12099                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
12100         if (rc) {
12101                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
12102                                 "0421 MSI-X slow-path request_irq failed "
12103                                 "(%d)\n", rc);
12104                 goto msi_fail_out;
12105         }
12106
12107         /* vector-1 is associated to fast-path handler */
12108         rc = request_irq(pci_irq_vector(phba->pcidev, 1),
12109                          &lpfc_sli_fp_intr_handler, 0,
12110                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
12111
12112         if (rc) {
12113                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
12114                                 "0429 MSI-X fast-path request_irq failed "
12115                                 "(%d)\n", rc);
12116                 goto irq_fail_out;
12117         }
12118
12119         /*
12120          * Configure HBA MSI-X attention conditions to messages
12121          */
12122         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
12123
12124         if (!pmb) {
12125                 rc = -ENOMEM;
12126                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12127                                 "0474 Unable to allocate memory for issuing "
12128                                 "MBOX_CONFIG_MSI command\n");
12129                 goto mem_fail_out;
12130         }
12131         rc = lpfc_config_msi(phba, pmb);
12132         if (rc)
12133                 goto mbx_fail_out;
12134         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
12135         if (rc != MBX_SUCCESS) {
12136                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
12137                                 "0351 Config MSI mailbox command failed, "
12138                                 "mbxCmd x%x, mbxStatus x%x\n",
12139                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
12140                 goto mbx_fail_out;
12141         }
12142
12143         /* Free memory allocated for mailbox command */
12144         mempool_free(pmb, phba->mbox_mem_pool);
12145         return rc;
12146
12147 mbx_fail_out:
12148         /* Free memory allocated for mailbox command */
12149         mempool_free(pmb, phba->mbox_mem_pool);
12150
12151 mem_fail_out:
12152         /* free the irq already requested */
12153         free_irq(pci_irq_vector(phba->pcidev, 1), phba);
12154
12155 irq_fail_out:
12156         /* free the irq already requested */
12157         free_irq(pci_irq_vector(phba->pcidev, 0), phba);
12158
12159 msi_fail_out:
12160         /* Unconfigure MSI-X capability structure */
12161         pci_free_irq_vectors(phba->pcidev);
12162
12163 vec_fail_out:
12164         return rc;
12165 }
12166
12167 /**
12168  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
12169  * @phba: pointer to lpfc hba data structure.
12170  *
12171  * This routine is invoked to enable the MSI interrupt mode to device with
12172  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
12173  * enable the MSI vector. The device driver is responsible for calling the
12174  * request_irq() to register MSI vector with a interrupt the handler, which
12175  * is done in this function.
12176  *
12177  * Return codes
12178  *      0 - successful
12179  *      other values - error
12180  */
12181 static int
12182 lpfc_sli_enable_msi(struct lpfc_hba *phba)
12183 {
12184         int rc;
12185
12186         rc = pci_enable_msi(phba->pcidev);
12187         if (!rc)
12188                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12189                                 "0012 PCI enable MSI mode success.\n");
12190         else {
12191                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12192                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
12193                 return rc;
12194         }
12195
12196         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
12197                          0, LPFC_DRIVER_NAME, phba);
12198         if (rc) {
12199                 pci_disable_msi(phba->pcidev);
12200                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
12201                                 "0478 MSI request_irq failed (%d)\n", rc);
12202         }
12203         return rc;
12204 }
12205
12206 /**
12207  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
12208  * @phba: pointer to lpfc hba data structure.
12209  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
12210  *
12211  * This routine is invoked to enable device interrupt and associate driver's
12212  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
12213  * spec. Depends on the interrupt mode configured to the driver, the driver
12214  * will try to fallback from the configured interrupt mode to an interrupt
12215  * mode which is supported by the platform, kernel, and device in the order
12216  * of:
12217  * MSI-X -> MSI -> IRQ.
12218  *
12219  * Return codes
12220  *   0 - successful
12221  *   other values - error
12222  **/
12223 static uint32_t
12224 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
12225 {
12226         uint32_t intr_mode = LPFC_INTR_ERROR;
12227         int retval;
12228
12229         /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
12230         retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
12231         if (retval)
12232                 return intr_mode;
12233         clear_bit(HBA_NEEDS_CFG_PORT, &phba->hba_flag);
12234
12235         if (cfg_mode == 2) {
12236                 /* Now, try to enable MSI-X interrupt mode */
12237                 retval = lpfc_sli_enable_msix(phba);
12238                 if (!retval) {
12239                         /* Indicate initialization to MSI-X mode */
12240                         phba->intr_type = MSIX;
12241                         intr_mode = 2;
12242                 }
12243         }
12244
12245         /* Fallback to MSI if MSI-X initialization failed */
12246         if (cfg_mode >= 1 && phba->intr_type == NONE) {
12247                 retval = lpfc_sli_enable_msi(phba);
12248                 if (!retval) {
12249                         /* Indicate initialization to MSI mode */
12250                         phba->intr_type = MSI;
12251                         intr_mode = 1;
12252                 }
12253         }
12254
12255         /* Fallback to INTx if both MSI-X/MSI initalization failed */
12256         if (phba->intr_type == NONE) {
12257                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
12258                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
12259                 if (!retval) {
12260                         /* Indicate initialization to INTx mode */
12261                         phba->intr_type = INTx;
12262                         intr_mode = 0;
12263                 }
12264         }
12265         return intr_mode;
12266 }
12267
12268 /**
12269  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
12270  * @phba: pointer to lpfc hba data structure.
12271  *
12272  * This routine is invoked to disable device interrupt and disassociate the
12273  * driver's interrupt handler(s) from interrupt vector(s) to device with
12274  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
12275  * release the interrupt vector(s) for the message signaled interrupt.
12276  **/
12277 static void
12278 lpfc_sli_disable_intr(struct lpfc_hba *phba)
12279 {
12280         int nr_irqs, i;
12281
12282         if (phba->intr_type == MSIX)
12283                 nr_irqs = LPFC_MSIX_VECTORS;
12284         else
12285                 nr_irqs = 1;
12286
12287         for (i = 0; i < nr_irqs; i++)
12288                 free_irq(pci_irq_vector(phba->pcidev, i), phba);
12289         pci_free_irq_vectors(phba->pcidev);
12290
12291         /* Reset interrupt management states */
12292         phba->intr_type = NONE;
12293         phba->sli.slistat.sli_intr = 0;
12294 }
12295
12296 /**
12297  * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue
12298  * @phba: pointer to lpfc hba data structure.
12299  * @id: EQ vector index or Hardware Queue index
12300  * @match: LPFC_FIND_BY_EQ = match by EQ
12301  *         LPFC_FIND_BY_HDWQ = match by Hardware Queue
12302  * Return the CPU that matches the selection criteria
12303  */
12304 static uint16_t
12305 lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
12306 {
12307         struct lpfc_vector_map_info *cpup;
12308         int cpu;
12309
12310         /* Loop through all CPUs */
12311         for_each_present_cpu(cpu) {
12312                 cpup = &phba->sli4_hba.cpu_map[cpu];
12313
12314                 /* If we are matching by EQ, there may be multiple CPUs using
12315                  * using the same vector, so select the one with
12316                  * LPFC_CPU_FIRST_IRQ set.
12317                  */
12318                 if ((match == LPFC_FIND_BY_EQ) &&
12319                     (cpup->flag & LPFC_CPU_FIRST_IRQ) &&
12320                     (cpup->eq == id))
12321                         return cpu;
12322
12323                 /* If matching by HDWQ, select the first CPU that matches */
12324                 if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))
12325                         return cpu;
12326         }
12327         return 0;
12328 }
12329
12330 #ifdef CONFIG_X86
12331 /**
12332  * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded
12333  * @phba: pointer to lpfc hba data structure.
12334  * @cpu: CPU map index
12335  * @phys_id: CPU package physical id
12336  * @core_id: CPU core id
12337  */
12338 static int
12339 lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
12340                 uint16_t phys_id, uint16_t core_id)
12341 {
12342         struct lpfc_vector_map_info *cpup;
12343         int idx;
12344
12345         for_each_present_cpu(idx) {
12346                 cpup = &phba->sli4_hba.cpu_map[idx];
12347                 /* Does the cpup match the one we are looking for */
12348                 if ((cpup->phys_id == phys_id) &&
12349                     (cpup->core_id == core_id) &&
12350                     (cpu != idx))
12351                         return 1;
12352         }
12353         return 0;
12354 }
12355 #endif
12356
12357 /*
12358  * lpfc_assign_eq_map_info - Assigns eq for vector_map structure
12359  * @phba: pointer to lpfc hba data structure.
12360  * @eqidx: index for eq and irq vector
12361  * @flag: flags to set for vector_map structure
12362  * @cpu: cpu used to index vector_map structure
12363  *
12364  * The routine assigns eq info into vector_map structure
12365  */
12366 static inline void
12367 lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag,
12368                         unsigned int cpu)
12369 {
12370         struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu];
12371         struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);
12372
12373         cpup->eq = eqidx;
12374         cpup->flag |= flag;
12375
12376         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12377                         "3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",
12378                         cpu, eqhdl->irq, cpup->eq, cpup->flag);
12379 }
12380
12381 /**
12382  * lpfc_cpu_map_array_init - Initialize cpu_map structure
12383  * @phba: pointer to lpfc hba data structure.
12384  *
12385  * The routine initializes the cpu_map array structure
12386  */
12387 static void
12388 lpfc_cpu_map_array_init(struct lpfc_hba *phba)
12389 {
12390         struct lpfc_vector_map_info *cpup;
12391         struct lpfc_eq_intr_info *eqi;
12392         int cpu;
12393
12394         for_each_possible_cpu(cpu) {
12395                 cpup = &phba->sli4_hba.cpu_map[cpu];
12396                 cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;
12397                 cpup->core_id = LPFC_VECTOR_MAP_EMPTY;
12398                 cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;
12399                 cpup->eq = LPFC_VECTOR_MAP_EMPTY;
12400                 cpup->flag = 0;
12401                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, cpu);
12402                 INIT_LIST_HEAD(&eqi->list);
12403                 eqi->icnt = 0;
12404         }
12405 }
12406
12407 /**
12408  * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure
12409  * @phba: pointer to lpfc hba data structure.
12410  *
12411  * The routine initializes the hba_eq_hdl array structure
12412  */
12413 static void
12414 lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)
12415 {
12416         struct lpfc_hba_eq_hdl *eqhdl;
12417         int i;
12418
12419         for (i = 0; i < phba->cfg_irq_chann; i++) {
12420                 eqhdl = lpfc_get_eq_hdl(i);
12421                 eqhdl->irq = LPFC_IRQ_EMPTY;
12422                 eqhdl->phba = phba;
12423         }
12424 }
12425
12426 /**
12427  * lpfc_cpu_affinity_check - Check vector CPU affinity mappings
12428  * @phba: pointer to lpfc hba data structure.
12429  * @vectors: number of msix vectors allocated.
12430  *
12431  * The routine will figure out the CPU affinity assignment for every
12432  * MSI-X vector allocated for the HBA.
12433  * In addition, the CPU to IO channel mapping will be calculated
12434  * and the phba->sli4_hba.cpu_map array will reflect this.
12435  */
12436 static void
12437 lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
12438 {
12439         int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;
12440         int max_phys_id, min_phys_id;
12441         int max_core_id, min_core_id;
12442         struct lpfc_vector_map_info *cpup;
12443         struct lpfc_vector_map_info *new_cpup;
12444 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
12445         struct lpfc_hdwq_stat *c_stat;
12446 #endif
12447
12448         max_phys_id = 0;
12449         min_phys_id = LPFC_VECTOR_MAP_EMPTY;
12450         max_core_id = 0;
12451         min_core_id = LPFC_VECTOR_MAP_EMPTY;
12452
12453         /* Update CPU map with physical id and core id of each CPU */
12454         for_each_present_cpu(cpu) {
12455                 cpup = &phba->sli4_hba.cpu_map[cpu];
12456 #ifdef CONFIG_X86
12457                 cpup->phys_id = topology_physical_package_id(cpu);
12458                 cpup->core_id = topology_core_id(cpu);
12459                 if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
12460                         cpup->flag |= LPFC_CPU_MAP_HYPER;
12461 #else
12462                 /* No distinction between CPUs for other platforms */
12463                 cpup->phys_id = 0;
12464                 cpup->core_id = cpu;
12465 #endif
12466
12467                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12468                                 "3328 CPU %d physid %d coreid %d flag x%x\n",
12469                                 cpu, cpup->phys_id, cpup->core_id, cpup->flag);
12470
12471                 if (cpup->phys_id > max_phys_id)
12472                         max_phys_id = cpup->phys_id;
12473                 if (cpup->phys_id < min_phys_id)
12474                         min_phys_id = cpup->phys_id;
12475
12476                 if (cpup->core_id > max_core_id)
12477                         max_core_id = cpup->core_id;
12478                 if (cpup->core_id < min_core_id)
12479                         min_core_id = cpup->core_id;
12480         }
12481
12482         /* After looking at each irq vector assigned to this pcidev, its
12483          * possible to see that not ALL CPUs have been accounted for.
12484          * Next we will set any unassigned (unaffinitized) cpu map
12485          * entries to a IRQ on the same phys_id.
12486          */
12487         first_cpu = cpumask_first(cpu_present_mask);
12488         start_cpu = first_cpu;
12489
12490         for_each_present_cpu(cpu) {
12491                 cpup = &phba->sli4_hba.cpu_map[cpu];
12492
12493                 /* Is this CPU entry unassigned */
12494                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
12495                         /* Mark CPU as IRQ not assigned by the kernel */
12496                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
12497
12498                         /* If so, find a new_cpup that is on the SAME
12499                          * phys_id as cpup. start_cpu will start where we
12500                          * left off so all unassigned entries don't get assgined
12501                          * the IRQ of the first entry.
12502                          */
12503                         new_cpu = start_cpu;
12504                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12505                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12506                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
12507                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&
12508                                     (new_cpup->phys_id == cpup->phys_id))
12509                                         goto found_same;
12510                                 new_cpu = lpfc_next_present_cpu(new_cpu);
12511                         }
12512                         /* At this point, we leave the CPU as unassigned */
12513                         continue;
12514 found_same:
12515                         /* We found a matching phys_id, so copy the IRQ info */
12516                         cpup->eq = new_cpup->eq;
12517
12518                         /* Bump start_cpu to the next slot to minmize the
12519                          * chance of having multiple unassigned CPU entries
12520                          * selecting the same IRQ.
12521                          */
12522                         start_cpu = lpfc_next_present_cpu(new_cpu);
12523
12524                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12525                                         "3337 Set Affinity: CPU %d "
12526                                         "eq %d from peer cpu %d same "
12527                                         "phys_id (%d)\n",
12528                                         cpu, cpup->eq, new_cpu,
12529                                         cpup->phys_id);
12530                 }
12531         }
12532
12533         /* Set any unassigned cpu map entries to a IRQ on any phys_id */
12534         start_cpu = first_cpu;
12535
12536         for_each_present_cpu(cpu) {
12537                 cpup = &phba->sli4_hba.cpu_map[cpu];
12538
12539                 /* Is this entry unassigned */
12540                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
12541                         /* Mark it as IRQ not assigned by the kernel */
12542                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
12543
12544                         /* If so, find a new_cpup thats on ANY phys_id
12545                          * as the cpup. start_cpu will start where we
12546                          * left off so all unassigned entries don't get
12547                          * assigned the IRQ of the first entry.
12548                          */
12549                         new_cpu = start_cpu;
12550                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12551                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12552                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
12553                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY))
12554                                         goto found_any;
12555                                 new_cpu = lpfc_next_present_cpu(new_cpu);
12556                         }
12557                         /* We should never leave an entry unassigned */
12558                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12559                                         "3339 Set Affinity: CPU %d "
12560                                         "eq %d UNASSIGNED\n",
12561                                         cpup->hdwq, cpup->eq);
12562                         continue;
12563 found_any:
12564                         /* We found an available entry, copy the IRQ info */
12565                         cpup->eq = new_cpup->eq;
12566
12567                         /* Bump start_cpu to the next slot to minmize the
12568                          * chance of having multiple unassigned CPU entries
12569                          * selecting the same IRQ.
12570                          */
12571                         start_cpu = lpfc_next_present_cpu(new_cpu);
12572
12573                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12574                                         "3338 Set Affinity: CPU %d "
12575                                         "eq %d from peer cpu %d (%d/%d)\n",
12576                                         cpu, cpup->eq, new_cpu,
12577                                         new_cpup->phys_id, new_cpup->core_id);
12578                 }
12579         }
12580
12581         /* Assign hdwq indices that are unique across all cpus in the map
12582          * that are also FIRST_CPUs.
12583          */
12584         idx = 0;
12585         for_each_present_cpu(cpu) {
12586                 cpup = &phba->sli4_hba.cpu_map[cpu];
12587
12588                 /* Only FIRST IRQs get a hdwq index assignment. */
12589                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
12590                         continue;
12591
12592                 /* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
12593                 cpup->hdwq = idx;
12594                 idx++;
12595                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12596                                 "3333 Set Affinity: CPU %d (phys %d core %d): "
12597                                 "hdwq %d eq %d flg x%x\n",
12598                                 cpu, cpup->phys_id, cpup->core_id,
12599                                 cpup->hdwq, cpup->eq, cpup->flag);
12600         }
12601         /* Associate a hdwq with each cpu_map entry
12602          * This will be 1 to 1 - hdwq to cpu, unless there are less
12603          * hardware queues then CPUs. For that case we will just round-robin
12604          * the available hardware queues as they get assigned to CPUs.
12605          * The next_idx is the idx from the FIRST_CPU loop above to account
12606          * for irq_chann < hdwq.  The idx is used for round-robin assignments
12607          * and needs to start at 0.
12608          */
12609         next_idx = idx;
12610         start_cpu = 0;
12611         idx = 0;
12612         for_each_present_cpu(cpu) {
12613                 cpup = &phba->sli4_hba.cpu_map[cpu];
12614
12615                 /* FIRST cpus are already mapped. */
12616                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
12617                         continue;
12618
12619                 /* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq
12620                  * of the unassigned cpus to the next idx so that all
12621                  * hdw queues are fully utilized.
12622                  */
12623                 if (next_idx < phba->cfg_hdw_queue) {
12624                         cpup->hdwq = next_idx;
12625                         next_idx++;
12626                         continue;
12627                 }
12628
12629                 /* Not a First CPU and all hdw_queues are used.  Reuse a
12630                  * Hardware Queue for another CPU, so be smart about it
12631                  * and pick one that has its IRQ/EQ mapped to the same phys_id
12632                  * (CPU package) and core_id.
12633                  */
12634                 new_cpu = start_cpu;
12635                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12636                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12637                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
12638                             new_cpup->phys_id == cpup->phys_id &&
12639                             new_cpup->core_id == cpup->core_id) {
12640                                 goto found_hdwq;
12641                         }
12642                         new_cpu = lpfc_next_present_cpu(new_cpu);
12643                 }
12644
12645                 /* If we can't match both phys_id and core_id,
12646                  * settle for just a phys_id match.
12647                  */
12648                 new_cpu = start_cpu;
12649                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12650                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12651                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
12652                             new_cpup->phys_id == cpup->phys_id)
12653                                 goto found_hdwq;
12654                         new_cpu = lpfc_next_present_cpu(new_cpu);
12655                 }
12656
12657                 /* Otherwise just round robin on cfg_hdw_queue */
12658                 cpup->hdwq = idx % phba->cfg_hdw_queue;
12659                 idx++;
12660                 goto logit;
12661  found_hdwq:
12662                 /* We found an available entry, copy the IRQ info */
12663                 start_cpu = lpfc_next_present_cpu(new_cpu);
12664                 cpup->hdwq = new_cpup->hdwq;
12665  logit:
12666                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12667                                 "3335 Set Affinity: CPU %d (phys %d core %d): "
12668                                 "hdwq %d eq %d flg x%x\n",
12669                                 cpu, cpup->phys_id, cpup->core_id,
12670                                 cpup->hdwq, cpup->eq, cpup->flag);
12671         }
12672
12673         /*
12674          * Initialize the cpu_map slots for not-present cpus in case
12675          * a cpu is hot-added. Perform a simple hdwq round robin assignment.
12676          */
12677         idx = 0;
12678         for_each_possible_cpu(cpu) {
12679                 cpup = &phba->sli4_hba.cpu_map[cpu];
12680 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
12681                 c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
12682                 c_stat->hdwq_no = cpup->hdwq;
12683 #endif
12684                 if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)
12685                         continue;
12686
12687                 cpup->hdwq = idx++ % phba->cfg_hdw_queue;
12688 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
12689                 c_stat->hdwq_no = cpup->hdwq;
12690 #endif
12691                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12692                                 "3340 Set Affinity: not present "
12693                                 "CPU %d hdwq %d\n",
12694                                 cpu, cpup->hdwq);
12695         }
12696
12697         /* The cpu_map array will be used later during initialization
12698          * when EQ / CQ / WQs are allocated and configured.
12699          */
12700         return;
12701 }
12702
12703 /**
12704  * lpfc_cpuhp_get_eq
12705  *
12706  * @phba:   pointer to lpfc hba data structure.
12707  * @cpu:    cpu going offline
12708  * @eqlist: eq list to append to
12709  */
12710 static int
12711 lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsigned int cpu,
12712                   struct list_head *eqlist)
12713 {
12714         const struct cpumask *maskp;
12715         struct lpfc_queue *eq;
12716         struct cpumask *tmp;
12717         u16 idx;
12718
12719         tmp = kzalloc(cpumask_size(), GFP_KERNEL);
12720         if (!tmp)
12721                 return -ENOMEM;
12722
12723         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
12724                 maskp = pci_irq_get_affinity(phba->pcidev, idx);
12725                 if (!maskp)
12726                         continue;
12727                 /*
12728                  * if irq is not affinitized to the cpu going
12729                  * then we don't need to poll the eq attached
12730                  * to it.
12731                  */
12732                 if (!cpumask_and(tmp, maskp, cpumask_of(cpu)))
12733                         continue;
12734                 /* get the cpus that are online and are affini-
12735                  * tized to this irq vector.  If the count is
12736                  * more than 1 then cpuhp is not going to shut-
12737                  * down this vector.  Since this cpu has not
12738                  * gone offline yet, we need >1.
12739                  */
12740                 cpumask_and(tmp, maskp, cpu_online_mask);
12741                 if (cpumask_weight(tmp) > 1)
12742                         continue;
12743
12744                 /* Now that we have an irq to shutdown, get the eq
12745                  * mapped to this irq.  Note: multiple hdwq's in
12746                  * the software can share an eq, but eventually
12747                  * only eq will be mapped to this vector
12748                  */
12749                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
12750                 list_add(&eq->_poll_list, eqlist);
12751         }
12752         kfree(tmp);
12753         return 0;
12754 }
12755
12756 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba)
12757 {
12758         if (phba->sli_rev != LPFC_SLI_REV4)
12759                 return;
12760
12761         cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,
12762                                             &phba->cpuhp);
12763         /*
12764          * unregistering the instance doesn't stop the polling
12765          * timer. Wait for the poll timer to retire.
12766          */
12767         synchronize_rcu();
12768         timer_delete_sync(&phba->cpuhp_poll_timer);
12769 }
12770
12771 static void lpfc_cpuhp_remove(struct lpfc_hba *phba)
12772 {
12773         if (phba->pport &&
12774             test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))
12775                 return;
12776
12777         __lpfc_cpuhp_remove(phba);
12778 }
12779
12780 static void lpfc_cpuhp_add(struct lpfc_hba *phba)
12781 {
12782         if (phba->sli_rev != LPFC_SLI_REV4)
12783                 return;
12784
12785         rcu_read_lock();
12786
12787         if (!list_empty(&phba->poll_list))
12788                 mod_timer(&phba->cpuhp_poll_timer,
12789                           jiffies + msecs_to_jiffies(LPFC_POLL_HB));
12790
12791         rcu_read_unlock();
12792
12793         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state,
12794                                          &phba->cpuhp);
12795 }
12796
12797 static int __lpfc_cpuhp_checks(struct lpfc_hba *phba, int *retval)
12798 {
12799         if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) {
12800                 *retval = -EAGAIN;
12801                 return true;
12802         }
12803
12804         if (phba->sli_rev != LPFC_SLI_REV4) {
12805                 *retval = 0;
12806                 return true;
12807         }
12808
12809         /* proceed with the hotplug */
12810         return false;
12811 }
12812
12813 /**
12814  * lpfc_irq_set_aff - set IRQ affinity
12815  * @eqhdl: EQ handle
12816  * @cpu: cpu to set affinity
12817  *
12818  **/
12819 static inline void
12820 lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu)
12821 {
12822         cpumask_clear(&eqhdl->aff_mask);
12823         cpumask_set_cpu(cpu, &eqhdl->aff_mask);
12824         irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
12825         irq_set_affinity(eqhdl->irq, &eqhdl->aff_mask);
12826 }
12827
12828 /**
12829  * lpfc_irq_clear_aff - clear IRQ affinity
12830  * @eqhdl: EQ handle
12831  *
12832  **/
12833 static inline void
12834 lpfc_irq_clear_aff(struct lpfc_hba_eq_hdl *eqhdl)
12835 {
12836         cpumask_clear(&eqhdl->aff_mask);
12837         irq_clear_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
12838 }
12839
12840 /**
12841  * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event
12842  * @phba: pointer to HBA context object.
12843  * @cpu: cpu going offline/online
12844  * @offline: true, cpu is going offline. false, cpu is coming online.
12845  *
12846  * If cpu is going offline, we'll try our best effort to find the next
12847  * online cpu on the phba's original_mask and migrate all offlining IRQ
12848  * affinities.
12849  *
12850  * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu.
12851  *
12852  * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on
12853  *       PCI_IRQ_AFFINITY to auto-manage IRQ affinity.
12854  *
12855  **/
12856 static void
12857 lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline)
12858 {
12859         struct lpfc_vector_map_info *cpup;
12860         struct cpumask *aff_mask;
12861         unsigned int cpu_select, cpu_next, idx;
12862         const struct cpumask *orig_mask;
12863
12864         if (phba->irq_chann_mode == NORMAL_MODE)
12865                 return;
12866
12867         orig_mask = &phba->sli4_hba.irq_aff_mask;
12868
12869         if (!cpumask_test_cpu(cpu, orig_mask))
12870                 return;
12871
12872         cpup = &phba->sli4_hba.cpu_map[cpu];
12873
12874         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
12875                 return;
12876
12877         if (offline) {
12878                 /* Find next online CPU on original mask */
12879                 cpu_next = cpumask_next_wrap(cpu, orig_mask);
12880                 cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);
12881
12882                 /* Found a valid CPU */
12883                 if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) {
12884                         /* Go through each eqhdl and ensure offlining
12885                          * cpu aff_mask is migrated
12886                          */
12887                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
12888                                 aff_mask = lpfc_get_aff_mask(idx);
12889
12890                                 /* Migrate affinity */
12891                                 if (cpumask_test_cpu(cpu, aff_mask))
12892                                         lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),
12893                                                          cpu_select);
12894                         }
12895                 } else {
12896                         /* Rely on irqbalance if no online CPUs left on NUMA */
12897                         for (idx = 0; idx < phba->cfg_irq_chann; idx++)
12898                                 lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));
12899                 }
12900         } else {
12901                 /* Migrate affinity back to this CPU */
12902                 lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);
12903         }
12904 }
12905
12906 static int lpfc_cpu_offline(unsigned int cpu, struct hlist_node *node)
12907 {
12908         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
12909         struct lpfc_queue *eq, *next;
12910         LIST_HEAD(eqlist);
12911         int retval;
12912
12913         if (!phba) {
12914                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
12915                 return 0;
12916         }
12917
12918         if (__lpfc_cpuhp_checks(phba, &retval))
12919                 return retval;
12920
12921         lpfc_irq_rebalance(phba, cpu, true);
12922
12923         retval = lpfc_cpuhp_get_eq(phba, cpu, &eqlist);
12924         if (retval)
12925                 return retval;
12926
12927         /* start polling on these eq's */
12928         list_for_each_entry_safe(eq, next, &eqlist, _poll_list) {
12929                 list_del_init(&eq->_poll_list);
12930                 lpfc_sli4_start_polling(eq);
12931         }
12932
12933         return 0;
12934 }
12935
12936 static int lpfc_cpu_online(unsigned int cpu, struct hlist_node *node)
12937 {
12938         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
12939         struct lpfc_queue *eq, *next;
12940         unsigned int n;
12941         int retval;
12942
12943         if (!phba) {
12944                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
12945                 return 0;
12946         }
12947
12948         if (__lpfc_cpuhp_checks(phba, &retval))
12949                 return retval;
12950
12951         lpfc_irq_rebalance(phba, cpu, false);
12952
12953         list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {
12954                 n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ);
12955                 if (n == cpu)
12956                         lpfc_sli4_stop_polling(eq);
12957         }
12958
12959         return 0;
12960 }
12961
12962 /**
12963  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
12964  * @phba: pointer to lpfc hba data structure.
12965  *
12966  * This routine is invoked to enable the MSI-X interrupt vectors to device
12967  * with SLI-4 interface spec.  It also allocates MSI-X vectors and maps them
12968  * to cpus on the system.
12969  *
12970  * When cfg_irq_numa is enabled, the adapter will only allocate vectors for
12971  * the number of cpus on the same numa node as this adapter.  The vectors are
12972  * allocated without requesting OS affinity mapping.  A vector will be
12973  * allocated and assigned to each online and offline cpu.  If the cpu is
12974  * online, then affinity will be set to that cpu.  If the cpu is offline, then
12975  * affinity will be set to the nearest peer cpu within the numa node that is
12976  * online.  If there are no online cpus within the numa node, affinity is not
12977  * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping
12978  * is consistent with the way cpu online/offline is handled when cfg_irq_numa is
12979  * configured.
12980  *
12981  * If numa mode is not enabled and there is more than 1 vector allocated, then
12982  * the driver relies on the managed irq interface where the OS assigns vector to
12983  * cpu affinity.  The driver will then use that affinity mapping to setup its
12984  * cpu mapping table.
12985  *
12986  * Return codes
12987  * 0 - successful
12988  * other values - error
12989  **/
12990 static int
12991 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
12992 {
12993         int vectors, rc, index;
12994         char *name;
12995         const struct cpumask *aff_mask = NULL;
12996         unsigned int cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids;
12997         struct lpfc_vector_map_info *cpup;
12998         struct lpfc_hba_eq_hdl *eqhdl;
12999         const struct cpumask *maskp;
13000         unsigned int flags = PCI_IRQ_MSIX;
13001
13002         /* Set up MSI-X multi-message vectors */
13003         vectors = phba->cfg_irq_chann;
13004
13005         if (phba->irq_chann_mode != NORMAL_MODE)
13006                 aff_mask = &phba->sli4_hba.irq_aff_mask;
13007
13008         if (aff_mask) {
13009                 cpu_cnt = cpumask_weight(aff_mask);
13010                 vectors = min(phba->cfg_irq_chann, cpu_cnt);
13011
13012                 /* cpu: iterates over aff_mask including offline or online
13013                  * cpu_select: iterates over online aff_mask to set affinity
13014                  */
13015                 cpu = cpumask_first(aff_mask);
13016                 cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
13017         } else {
13018                 flags |= PCI_IRQ_AFFINITY;
13019         }
13020
13021         rc = pci_alloc_irq_vectors(phba->pcidev, 1, vectors, flags);
13022         if (rc < 0) {
13023                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13024                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
13025                 goto vec_fail_out;
13026         }
13027         vectors = rc;
13028
13029         /* Assign MSI-X vectors to interrupt handlers */
13030         for (index = 0; index < vectors; index++) {
13031                 eqhdl = lpfc_get_eq_hdl(index);
13032                 name = eqhdl->handler_name;
13033                 memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);
13034                 snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,
13035                          LPFC_DRIVER_HANDLER_NAME"%d", index);
13036
13037                 eqhdl->idx = index;
13038                 rc = pci_irq_vector(phba->pcidev, index);
13039                 if (rc < 0) {
13040                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
13041                                         "0489 MSI-X fast-path (%d) "
13042                                         "pci_irq_vec failed (%d)\n", index, rc);
13043                         goto cfg_fail_out;
13044                 }
13045                 eqhdl->irq = rc;
13046
13047                 rc = request_threaded_irq(eqhdl->irq,
13048                                           &lpfc_sli4_hba_intr_handler,
13049                                           &lpfc_sli4_hba_intr_handler_th,
13050                                           0, name, eqhdl);
13051                 if (rc) {
13052                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
13053                                         "0486 MSI-X fast-path (%d) "
13054                                         "request_irq failed (%d)\n", index, rc);
13055                         goto cfg_fail_out;
13056                 }
13057
13058                 if (aff_mask) {
13059                         /* If found a neighboring online cpu, set affinity */
13060                         if (cpu_select < nr_cpu_ids)
13061                                 lpfc_irq_set_aff(eqhdl, cpu_select);
13062
13063                         /* Assign EQ to cpu_map */
13064                         lpfc_assign_eq_map_info(phba, index,
13065                                                 LPFC_CPU_FIRST_IRQ,
13066                                                 cpu);
13067
13068                         /* Iterate to next offline or online cpu in aff_mask */
13069                         cpu = cpumask_next(cpu, aff_mask);
13070
13071                         /* Find next online cpu in aff_mask to set affinity */
13072                         cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
13073                 } else if (vectors == 1) {
13074                         cpu = cpumask_first(cpu_present_mask);
13075                         lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,
13076                                                 cpu);
13077                 } else {
13078                         maskp = pci_irq_get_affinity(phba->pcidev, index);
13079
13080                         /* Loop through all CPUs associated with vector index */
13081                         for_each_cpu_and(cpu, maskp, cpu_present_mask) {
13082                                 cpup = &phba->sli4_hba.cpu_map[cpu];
13083
13084                                 /* If this is the first CPU thats assigned to
13085                                  * this vector, set LPFC_CPU_FIRST_IRQ.
13086                                  *
13087                                  * With certain platforms its possible that irq
13088                                  * vectors are affinitized to all the cpu's.
13089                                  * This can result in each cpu_map.eq to be set
13090                                  * to the last vector, resulting in overwrite
13091                                  * of all the previous cpu_map.eq.  Ensure that
13092                                  * each vector receives a place in cpu_map.
13093                                  * Later call to lpfc_cpu_affinity_check will
13094                                  * ensure we are nicely balanced out.
13095                                  */
13096                                 if (cpup->eq != LPFC_VECTOR_MAP_EMPTY)
13097                                         continue;
13098                                 lpfc_assign_eq_map_info(phba, index,
13099                                                         LPFC_CPU_FIRST_IRQ,
13100                                                         cpu);
13101                                 break;
13102                         }
13103                 }
13104         }
13105
13106         if (vectors != phba->cfg_irq_chann) {
13107                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13108                                 "3238 Reducing IO channels to match number of "
13109                                 "MSI-X vectors, requested %d got %d\n",
13110                                 phba->cfg_irq_chann, vectors);
13111                 if (phba->cfg_irq_chann > vectors)
13112                         phba->cfg_irq_chann = vectors;
13113         }
13114
13115         return rc;
13116
13117 cfg_fail_out:
13118         /* free the irq already requested */
13119         for (--index; index >= 0; index--) {
13120                 eqhdl = lpfc_get_eq_hdl(index);
13121                 lpfc_irq_clear_aff(eqhdl);
13122                 free_irq(eqhdl->irq, eqhdl);
13123         }
13124
13125         /* Unconfigure MSI-X capability structure */
13126         pci_free_irq_vectors(phba->pcidev);
13127
13128 vec_fail_out:
13129         return rc;
13130 }
13131
13132 /**
13133  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
13134  * @phba: pointer to lpfc hba data structure.
13135  *
13136  * This routine is invoked to enable the MSI interrupt mode to device with
13137  * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
13138  * called to enable the MSI vector. The device driver is responsible for
13139  * calling the request_irq() to register MSI vector with a interrupt the
13140  * handler, which is done in this function.
13141  *
13142  * Return codes
13143  *      0 - successful
13144  *      other values - error
13145  **/
13146 static int
13147 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
13148 {
13149         int rc, index;
13150         unsigned int cpu;
13151         struct lpfc_hba_eq_hdl *eqhdl;
13152
13153         rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
13154                                    PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
13155         if (rc > 0)
13156                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13157                                 "0487 PCI enable MSI mode success.\n");
13158         else {
13159                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13160                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
13161                 return rc ? rc : -1;
13162         }
13163
13164         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
13165                          0, LPFC_DRIVER_NAME, phba);
13166         if (rc) {
13167                 pci_free_irq_vectors(phba->pcidev);
13168                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
13169                                 "0490 MSI request_irq failed (%d)\n", rc);
13170                 return rc;
13171         }
13172
13173         eqhdl = lpfc_get_eq_hdl(0);
13174         rc = pci_irq_vector(phba->pcidev, 0);
13175         if (rc < 0) {
13176                 free_irq(phba->pcidev->irq, phba);
13177                 pci_free_irq_vectors(phba->pcidev);
13178                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
13179                                 "0496 MSI pci_irq_vec failed (%d)\n", rc);
13180                 return rc;
13181         }
13182         eqhdl->irq = rc;
13183
13184         cpu = cpumask_first(cpu_present_mask);
13185         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);
13186
13187         for (index = 0; index < phba->cfg_irq_chann; index++) {
13188                 eqhdl = lpfc_get_eq_hdl(index);
13189                 eqhdl->idx = index;
13190         }
13191
13192         return 0;
13193 }
13194
13195 /**
13196  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
13197  * @phba: pointer to lpfc hba data structure.
13198  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
13199  *
13200  * This routine is invoked to enable device interrupt and associate driver's
13201  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
13202  * interface spec. Depends on the interrupt mode configured to the driver,
13203  * the driver will try to fallback from the configured interrupt mode to an
13204  * interrupt mode which is supported by the platform, kernel, and device in
13205  * the order of:
13206  * MSI-X -> MSI -> IRQ.
13207  *
13208  * Return codes
13209  *      Interrupt mode (2, 1, 0) - successful
13210  *      LPFC_INTR_ERROR - error
13211  **/
13212 static uint32_t
13213 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
13214 {
13215         uint32_t intr_mode = LPFC_INTR_ERROR;
13216         int retval, idx;
13217
13218         if (cfg_mode == 2) {
13219                 /* Preparation before conf_msi mbox cmd */
13220                 retval = 0;
13221                 if (!retval) {
13222                         /* Now, try to enable MSI-X interrupt mode */
13223                         retval = lpfc_sli4_enable_msix(phba);
13224                         if (!retval) {
13225                                 /* Indicate initialization to MSI-X mode */
13226                                 phba->intr_type = MSIX;
13227                                 intr_mode = 2;
13228                         }
13229                 }
13230         }
13231
13232         /* Fallback to MSI if MSI-X initialization failed */
13233         if (cfg_mode >= 1 && phba->intr_type == NONE) {
13234                 retval = lpfc_sli4_enable_msi(phba);
13235                 if (!retval) {
13236                         /* Indicate initialization to MSI mode */
13237                         phba->intr_type = MSI;
13238                         intr_mode = 1;
13239                 }
13240         }
13241
13242         /* Fallback to INTx if both MSI-X/MSI initalization failed */
13243         if (phba->intr_type == NONE) {
13244                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
13245                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
13246                 if (!retval) {
13247                         struct lpfc_hba_eq_hdl *eqhdl;
13248                         unsigned int cpu;
13249
13250                         /* Indicate initialization to INTx mode */
13251                         phba->intr_type = INTx;
13252                         intr_mode = 0;
13253
13254                         eqhdl = lpfc_get_eq_hdl(0);
13255                         retval = pci_irq_vector(phba->pcidev, 0);
13256                         if (retval < 0) {
13257                                 free_irq(phba->pcidev->irq, phba);
13258                                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
13259                                         "0502 INTR pci_irq_vec failed (%d)\n",
13260                                          retval);
13261                                 return LPFC_INTR_ERROR;
13262                         }
13263                         eqhdl->irq = retval;
13264
13265                         cpu = cpumask_first(cpu_present_mask);
13266                         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ,
13267                                                 cpu);
13268                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
13269                                 eqhdl = lpfc_get_eq_hdl(idx);
13270                                 eqhdl->idx = idx;
13271                         }
13272                 }
13273         }
13274         return intr_mode;
13275 }
13276
13277 /**
13278  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
13279  * @phba: pointer to lpfc hba data structure.
13280  *
13281  * This routine is invoked to disable device interrupt and disassociate
13282  * the driver's interrupt handler(s) from interrupt vector(s) to device
13283  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
13284  * will release the interrupt vector(s) for the message signaled interrupt.
13285  **/
13286 static void
13287 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
13288 {
13289         /* Disable the currently initialized interrupt mode */
13290         if (phba->intr_type == MSIX) {
13291                 int index;
13292                 struct lpfc_hba_eq_hdl *eqhdl;
13293
13294                 /* Free up MSI-X multi-message vectors */
13295                 for (index = 0; index < phba->cfg_irq_chann; index++) {
13296                         eqhdl = lpfc_get_eq_hdl(index);
13297                         lpfc_irq_clear_aff(eqhdl);
13298                         free_irq(eqhdl->irq, eqhdl);
13299                 }
13300         } else {
13301                 free_irq(phba->pcidev->irq, phba);
13302         }
13303
13304         pci_free_irq_vectors(phba->pcidev);
13305
13306         /* Reset interrupt management states */
13307         phba->intr_type = NONE;
13308         phba->sli.slistat.sli_intr = 0;
13309 }
13310
13311 /**
13312  * lpfc_unset_hba - Unset SLI3 hba device initialization
13313  * @phba: pointer to lpfc hba data structure.
13314  *
13315  * This routine is invoked to unset the HBA device initialization steps to
13316  * a device with SLI-3 interface spec.
13317  **/
13318 static void
13319 lpfc_unset_hba(struct lpfc_hba *phba)
13320 {
13321         set_bit(FC_UNLOADING, &phba->pport->load_flag);
13322
13323         kfree(phba->vpi_bmask);
13324         kfree(phba->vpi_ids);
13325
13326         lpfc_stop_hba_timers(phba);
13327
13328         phba->pport->work_port_events = 0;
13329
13330         lpfc_sli_hba_down(phba);
13331
13332         lpfc_sli_brdrestart(phba);
13333
13334         lpfc_sli_disable_intr(phba);
13335
13336         return;
13337 }
13338
13339 /**
13340  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
13341  * @phba: Pointer to HBA context object.
13342  *
13343  * This function is called in the SLI4 code path to wait for completion
13344  * of device's XRIs exchange busy. It will check the XRI exchange busy
13345  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
13346  * that, it will check the XRI exchange busy on outstanding FCP and ELS
13347  * I/Os every 30 seconds, log error message, and wait forever. Only when
13348  * all XRI exchange busy complete, the driver unload shall proceed with
13349  * invoking the function reset ioctl mailbox command to the CNA and the
13350  * the rest of the driver unload resource release.
13351  **/
13352 static void
13353 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
13354 {
13355         struct lpfc_sli4_hdw_queue *qp;
13356         int idx, ccnt;
13357         int wait_time = 0;
13358         int io_xri_cmpl = 1;
13359         int nvmet_xri_cmpl = 1;
13360         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
13361
13362         /* Driver just aborted IOs during the hba_unset process.  Pause
13363          * here to give the HBA time to complete the IO and get entries
13364          * into the abts lists.
13365          */
13366         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
13367
13368         /* Wait for NVME pending IO to flush back to transport. */
13369         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
13370                 lpfc_nvme_wait_for_io_drain(phba);
13371
13372         ccnt = 0;
13373         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
13374                 qp = &phba->sli4_hba.hdwq[idx];
13375                 io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);
13376                 if (!io_xri_cmpl) /* if list is NOT empty */
13377                         ccnt++;
13378         }
13379         if (ccnt)
13380                 io_xri_cmpl = 0;
13381
13382         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13383                 nvmet_xri_cmpl =
13384                         list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
13385         }
13386
13387         while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {
13388                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
13389                         if (!nvmet_xri_cmpl)
13390                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13391                                                 "6424 NVMET XRI exchange busy "
13392                                                 "wait time: %d seconds.\n",
13393                                                 wait_time/1000);
13394                         if (!io_xri_cmpl)
13395                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13396                                                 "6100 IO XRI exchange busy "
13397                                                 "wait time: %d seconds.\n",
13398                                                 wait_time/1000);
13399                         if (!els_xri_cmpl)
13400                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13401                                                 "2878 ELS XRI exchange busy "
13402                                                 "wait time: %d seconds.\n",
13403                                                 wait_time/1000);
13404                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
13405                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
13406                 } else {
13407                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
13408                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
13409                 }
13410
13411                 ccnt = 0;
13412                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
13413                         qp = &phba->sli4_hba.hdwq[idx];
13414                         io_xri_cmpl = list_empty(
13415                             &qp->lpfc_abts_io_buf_list);
13416                         if (!io_xri_cmpl) /* if list is NOT empty */
13417                                 ccnt++;
13418                 }
13419                 if (ccnt)
13420                         io_xri_cmpl = 0;
13421
13422                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13423                         nvmet_xri_cmpl = list_empty(
13424                                 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
13425                 }
13426                 els_xri_cmpl =
13427                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
13428
13429         }
13430 }
13431
13432 /**
13433  * lpfc_sli4_hba_unset - Unset the fcoe hba
13434  * @phba: Pointer to HBA context object.
13435  *
13436  * This function is called in the SLI4 code path to reset the HBA's FCoE
13437  * function. The caller is not required to hold any lock. This routine
13438  * issues PCI function reset mailbox command to reset the FCoE function.
13439  * At the end of the function, it calls lpfc_hba_down_post function to
13440  * free any pending commands.
13441  **/
13442 static void
13443 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
13444 {
13445         int wait_cnt = 0;
13446         LPFC_MBOXQ_t *mboxq;
13447         struct pci_dev *pdev = phba->pcidev;
13448
13449         lpfc_stop_hba_timers(phba);
13450         hrtimer_cancel(&phba->cmf_stats_timer);
13451         hrtimer_cancel(&phba->cmf_timer);
13452
13453         if (phba->pport)
13454                 phba->sli4_hba.intr_enable = 0;
13455
13456         /*
13457          * Gracefully wait out the potential current outstanding asynchronous
13458          * mailbox command.
13459          */
13460
13461         /* First, block any pending async mailbox command from posted */
13462         spin_lock_irq(&phba->hbalock);
13463         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
13464         spin_unlock_irq(&phba->hbalock);
13465         /* Now, trying to wait it out if we can */
13466         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
13467                 msleep(10);
13468                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
13469                         break;
13470         }
13471         /* Forcefully release the outstanding mailbox command if timed out */
13472         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
13473                 spin_lock_irq(&phba->hbalock);
13474                 mboxq = phba->sli.mbox_active;
13475                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
13476                 __lpfc_mbox_cmpl_put(phba, mboxq);
13477                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
13478                 phba->sli.mbox_active = NULL;
13479                 spin_unlock_irq(&phba->hbalock);
13480         }
13481
13482         /* Abort all iocbs associated with the hba */
13483         lpfc_sli_hba_iocb_abort(phba);
13484
13485         if (!pci_channel_offline(phba->pcidev))
13486                 /* Wait for completion of device XRI exchange busy */
13487                 lpfc_sli4_xri_exchange_busy_wait(phba);
13488
13489         /* per-phba callback de-registration for hotplug event */
13490         if (phba->pport)
13491                 lpfc_cpuhp_remove(phba);
13492
13493         /* Disable PCI subsystem interrupt */
13494         lpfc_sli4_disable_intr(phba);
13495
13496         /* Disable SR-IOV if enabled */
13497         if (phba->cfg_sriov_nr_virtfn)
13498                 pci_disable_sriov(pdev);
13499
13500         /* Stop kthread signal shall trigger work_done one more time */
13501         kthread_stop(phba->worker_thread);
13502
13503         /* Disable FW logging to host memory */
13504         lpfc_ras_stop_fwlog(phba);
13505
13506         lpfc_sli4_queue_unset(phba);
13507
13508         /* Reset SLI4 HBA FCoE function */
13509         lpfc_pci_function_reset(phba);
13510
13511         /* release all queue allocated resources. */
13512         lpfc_sli4_queue_destroy(phba);
13513
13514         /* Free RAS DMA memory */
13515         if (phba->ras_fwlog.ras_enabled)
13516                 lpfc_sli4_ras_dma_free(phba);
13517
13518         /* Stop the SLI4 device port */
13519         if (phba->pport)
13520                 phba->pport->work_port_events = 0;
13521 }
13522
13523 static uint32_t
13524 lpfc_cgn_crc32(uint32_t crc, u8 byte)
13525 {
13526         uint32_t msb = 0;
13527         uint32_t bit;
13528
13529         for (bit = 0; bit < 8; bit++) {
13530                 msb = (crc >> 31) & 1;
13531                 crc <<= 1;
13532
13533                 if (msb ^ (byte & 1)) {
13534                         crc ^= LPFC_CGN_CRC32_MAGIC_NUMBER;
13535                         crc |= 1;
13536                 }
13537                 byte >>= 1;
13538         }
13539         return crc;
13540 }
13541
13542 static uint32_t
13543 lpfc_cgn_reverse_bits(uint32_t wd)
13544 {
13545         uint32_t result = 0;
13546         uint32_t i;
13547
13548         for (i = 0; i < 32; i++) {
13549                 result <<= 1;
13550                 result |= (1 & (wd >> i));
13551         }
13552         return result;
13553 }
13554
13555 /*
13556  * The routine corresponds with the algorithm the HBA firmware
13557  * uses to validate the data integrity.
13558  */
13559 uint32_t
13560 lpfc_cgn_calc_crc32(void *ptr, uint32_t byteLen, uint32_t crc)
13561 {
13562         uint32_t  i;
13563         uint32_t result;
13564         uint8_t  *data = (uint8_t *)ptr;
13565
13566         for (i = 0; i < byteLen; ++i)
13567                 crc = lpfc_cgn_crc32(crc, data[i]);
13568
13569         result = ~lpfc_cgn_reverse_bits(crc);
13570         return result;
13571 }
13572
13573 void
13574 lpfc_init_congestion_buf(struct lpfc_hba *phba)
13575 {
13576         struct lpfc_cgn_info *cp;
13577         uint16_t size;
13578         uint32_t crc;
13579
13580         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
13581                         "6235 INIT Congestion Buffer %p\n", phba->cgn_i);
13582
13583         if (!phba->cgn_i)
13584                 return;
13585         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
13586
13587         atomic_set(&phba->cgn_fabric_warn_cnt, 0);
13588         atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
13589         atomic_set(&phba->cgn_sync_alarm_cnt, 0);
13590         atomic_set(&phba->cgn_sync_warn_cnt, 0);
13591
13592         atomic_set(&phba->cgn_driver_evt_cnt, 0);
13593         atomic_set(&phba->cgn_latency_evt_cnt, 0);
13594         atomic64_set(&phba->cgn_latency_evt, 0);
13595         phba->cgn_evt_minute = 0;
13596
13597         memset(cp, 0xff, offsetof(struct lpfc_cgn_info, cgn_stat));
13598         cp->cgn_info_size = cpu_to_le16(LPFC_CGN_INFO_SZ);
13599         cp->cgn_info_version = LPFC_CGN_INFO_V4;
13600
13601         /* cgn parameters */
13602         cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
13603         cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
13604         cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
13605         cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
13606
13607         lpfc_cgn_update_tstamp(phba, &cp->base_time);
13608
13609         /* Fill in default LUN qdepth */
13610         if (phba->pport) {
13611                 size = (uint16_t)(phba->pport->cfg_lun_queue_depth);
13612                 cp->cgn_lunq = cpu_to_le16(size);
13613         }
13614
13615         /* last used Index initialized to 0xff already */
13616
13617         cp->cgn_warn_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);
13618         cp->cgn_alarm_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);
13619         crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);
13620         cp->cgn_info_crc = cpu_to_le32(crc);
13621
13622         phba->cgn_evt_timestamp = jiffies +
13623                 msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);
13624 }
13625
13626 void
13627 lpfc_init_congestion_stat(struct lpfc_hba *phba)
13628 {
13629         struct lpfc_cgn_info *cp;
13630         uint32_t crc;
13631
13632         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
13633                         "6236 INIT Congestion Stat %p\n", phba->cgn_i);
13634
13635         if (!phba->cgn_i)
13636                 return;
13637
13638         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
13639         memset(&cp->cgn_stat, 0, sizeof(cp->cgn_stat));
13640
13641         lpfc_cgn_update_tstamp(phba, &cp->stat_start);
13642         crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);
13643         cp->cgn_info_crc = cpu_to_le32(crc);
13644 }
13645
13646 /**
13647  * __lpfc_reg_congestion_buf - register congestion info buffer with HBA
13648  * @phba: Pointer to hba context object.
13649  * @reg: flag to determine register or unregister.
13650  */
13651 static int
13652 __lpfc_reg_congestion_buf(struct lpfc_hba *phba, int reg)
13653 {
13654         struct lpfc_mbx_reg_congestion_buf *reg_congestion_buf;
13655         union  lpfc_sli4_cfg_shdr *shdr;
13656         uint32_t shdr_status, shdr_add_status;
13657         LPFC_MBOXQ_t *mboxq;
13658         int length, rc;
13659
13660         if (!phba->cgn_i)
13661                 return -ENXIO;
13662
13663         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
13664         if (!mboxq) {
13665                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
13666                                 "2641 REG_CONGESTION_BUF mbox allocation fail: "
13667                                 "HBA state x%x reg %d\n",
13668                                 phba->pport->port_state, reg);
13669                 return -ENOMEM;
13670         }
13671
13672         length = (sizeof(struct lpfc_mbx_reg_congestion_buf) -
13673                 sizeof(struct lpfc_sli4_cfg_mhdr));
13674         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
13675                          LPFC_MBOX_OPCODE_REG_CONGESTION_BUF, length,
13676                          LPFC_SLI4_MBX_EMBED);
13677         reg_congestion_buf = &mboxq->u.mqe.un.reg_congestion_buf;
13678         bf_set(lpfc_mbx_reg_cgn_buf_type, reg_congestion_buf, 1);
13679         if (reg > 0)
13680                 bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 1);
13681         else
13682                 bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 0);
13683         reg_congestion_buf->length = sizeof(struct lpfc_cgn_info);
13684         reg_congestion_buf->addr_lo =
13685                 putPaddrLow(phba->cgn_i->phys);
13686         reg_congestion_buf->addr_hi =
13687                 putPaddrHigh(phba->cgn_i->phys);
13688
13689         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
13690         shdr = (union lpfc_sli4_cfg_shdr *)
13691                 &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
13692         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
13693         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
13694                                  &shdr->response);
13695         mempool_free(mboxq, phba->mbox_mem_pool);
13696         if (shdr_status || shdr_add_status || rc) {
13697                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13698                                 "2642 REG_CONGESTION_BUF mailbox "
13699                                 "failed with status x%x add_status x%x,"
13700                                 " mbx status x%x reg %d\n",
13701                                 shdr_status, shdr_add_status, rc, reg);
13702                 return -ENXIO;
13703         }
13704         return 0;
13705 }
13706
13707 int
13708 lpfc_unreg_congestion_buf(struct lpfc_hba *phba)
13709 {
13710         lpfc_cmf_stop(phba);
13711         return __lpfc_reg_congestion_buf(phba, 0);
13712 }
13713
13714 int
13715 lpfc_reg_congestion_buf(struct lpfc_hba *phba)
13716 {
13717         return __lpfc_reg_congestion_buf(phba, 1);
13718 }
13719
13720 /**
13721  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
13722  * @phba: Pointer to HBA context object.
13723  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
13724  *
13725  * This function is called in the SLI4 code path to read the port's
13726  * sli4 capabilities.
13727  *
13728  * This function may be be called from any context that can block-wait
13729  * for the completion.  The expectation is that this routine is called
13730  * typically from probe_one or from the online routine.
13731  **/
13732 int
13733 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
13734 {
13735         int rc;
13736         struct lpfc_mqe *mqe = &mboxq->u.mqe;
13737         struct lpfc_pc_sli4_params *sli4_params;
13738         uint32_t mbox_tmo;
13739         int length;
13740         bool exp_wqcq_pages = true;
13741         struct lpfc_sli4_parameters *mbx_sli4_parameters;
13742
13743         /*
13744          * By default, the driver assumes the SLI4 port requires RPI
13745          * header postings.  The SLI4_PARAM response will correct this
13746          * assumption.
13747          */
13748         phba->sli4_hba.rpi_hdrs_in_use = 1;
13749
13750         /* Read the port's SLI4 Config Parameters */
13751         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
13752                   sizeof(struct lpfc_sli4_cfg_mhdr));
13753         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
13754                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
13755                          length, LPFC_SLI4_MBX_EMBED);
13756         if (!phba->sli4_hba.intr_enable)
13757                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
13758         else {
13759                 mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
13760                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
13761         }
13762         if (unlikely(rc))
13763                 return rc;
13764         sli4_params = &phba->sli4_hba.pc_sli4_params;
13765         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
13766         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
13767         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
13768         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
13769         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
13770                                              mbx_sli4_parameters);
13771         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
13772                                              mbx_sli4_parameters);
13773         if (bf_get(cfg_phwq, mbx_sli4_parameters))
13774                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
13775         else
13776                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
13777         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
13778         sli4_params->loopbk_scope = bf_get(cfg_loopbk_scope,
13779                                            mbx_sli4_parameters);
13780         sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);
13781         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
13782         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
13783         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
13784         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
13785         sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);
13786         sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);
13787         sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);
13788         sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);
13789         sli4_params->pls = bf_get(cfg_pvl, mbx_sli4_parameters);
13790         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
13791                                             mbx_sli4_parameters);
13792         sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);
13793         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
13794                                            mbx_sli4_parameters);
13795         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
13796         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
13797         sli4_params->mi_cap = bf_get(cfg_mi_ver, mbx_sli4_parameters);
13798
13799         /* Check for Extended Pre-Registered SGL support */
13800         phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
13801
13802         /* Check for firmware nvme support */
13803         rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
13804                      bf_get(cfg_xib, mbx_sli4_parameters));
13805
13806         if (rc) {
13807                 /* Save this to indicate the Firmware supports NVME */
13808                 sli4_params->nvme = 1;
13809
13810                 /* Firmware NVME support, check driver FC4 NVME support */
13811                 if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
13812                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
13813                                         "6133 Disabling NVME support: "
13814                                         "FC4 type not supported: x%x\n",
13815                                         phba->cfg_enable_fc4_type);
13816                         goto fcponly;
13817                 }
13818         } else {
13819                 /* No firmware NVME support, check driver FC4 NVME support */
13820                 sli4_params->nvme = 0;
13821                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13822                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
13823                                         "6101 Disabling NVME support: Not "
13824                                         "supported by firmware (%d %d) x%x\n",
13825                                         bf_get(cfg_nvme, mbx_sli4_parameters),
13826                                         bf_get(cfg_xib, mbx_sli4_parameters),
13827                                         phba->cfg_enable_fc4_type);
13828 fcponly:
13829                         phba->nvmet_support = 0;
13830                         phba->cfg_nvmet_mrq = 0;
13831                         phba->cfg_nvme_seg_cnt = 0;
13832
13833                         /* If no FC4 type support, move to just SCSI support */
13834                         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
13835                                 return -ENODEV;
13836                         phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
13837                 }
13838         }
13839
13840         /* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
13841          * accommodate 512K and 1M IOs in a single nvme buf.
13842          */
13843         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
13844                 phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
13845
13846         /* Enable embedded Payload BDE if support is indicated */
13847         if (bf_get(cfg_pbde, mbx_sli4_parameters))
13848                 phba->cfg_enable_pbde = 1;
13849         else
13850                 phba->cfg_enable_pbde = 0;
13851
13852         /*
13853          * To support Suppress Response feature we must satisfy 3 conditions.
13854          * lpfc_suppress_rsp module parameter must be set (default).
13855          * In SLI4-Parameters Descriptor:
13856          * Extended Inline Buffers (XIB) must be supported.
13857          * Suppress Response IU Not Supported (SRIUNS) must NOT be supported
13858          * (double negative).
13859          */
13860         if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
13861             !(bf_get(cfg_nosr, mbx_sli4_parameters)))
13862                 phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
13863         else
13864                 phba->cfg_suppress_rsp = 0;
13865
13866         if (bf_get(cfg_eqdr, mbx_sli4_parameters))
13867                 phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
13868
13869         /* Make sure that sge_supp_len can be handled by the driver */
13870         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
13871                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
13872
13873         dma_set_max_seg_size(&phba->pcidev->dev, sli4_params->sge_supp_len);
13874
13875         /*
13876          * Check whether the adapter supports an embedded copy of the
13877          * FCP CMD IU within the WQE for FCP_Ixxx commands. In order
13878          * to use this option, 128-byte WQEs must be used.
13879          */
13880         if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
13881                 phba->fcp_embed_io = 1;
13882         else
13883                 phba->fcp_embed_io = 0;
13884
13885         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
13886                         "6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",
13887                         bf_get(cfg_xib, mbx_sli4_parameters),
13888                         phba->cfg_enable_pbde,
13889                         phba->fcp_embed_io, sli4_params->nvme,
13890                         phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);
13891
13892         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
13893             LPFC_SLI_INTF_IF_TYPE_2) &&
13894             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
13895                  LPFC_SLI_INTF_FAMILY_LNCR_A0))
13896                 exp_wqcq_pages = false;
13897
13898         if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
13899             (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
13900             exp_wqcq_pages &&
13901             (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
13902                 phba->enab_exp_wqcq_pages = 1;
13903         else
13904                 phba->enab_exp_wqcq_pages = 0;
13905         /*
13906          * Check if the SLI port supports MDS Diagnostics
13907          */
13908         if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
13909                 phba->mds_diags_support = 1;
13910         else
13911                 phba->mds_diags_support = 0;
13912
13913         /*
13914          * Check if the SLI port supports NSLER
13915          */
13916         if (bf_get(cfg_nsler, mbx_sli4_parameters))
13917                 phba->nsler = 1;
13918         else
13919                 phba->nsler = 0;
13920
13921         return 0;
13922 }
13923
13924 /**
13925  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
13926  * @pdev: pointer to PCI device
13927  * @pid: pointer to PCI device identifier
13928  *
13929  * This routine is to be called to attach a device with SLI-3 interface spec
13930  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
13931  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
13932  * information of the device and driver to see if the driver state that it can
13933  * support this kind of device. If the match is successful, the driver core
13934  * invokes this routine. If this routine determines it can claim the HBA, it
13935  * does all the initialization that it needs to do to handle the HBA properly.
13936  *
13937  * Return code
13938  *      0 - driver can claim the device
13939  *      negative value - driver can not claim the device
13940  **/
13941 static int
13942 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
13943 {
13944         struct lpfc_hba   *phba;
13945         struct lpfc_vport *vport = NULL;
13946         struct Scsi_Host  *shost = NULL;
13947         int error;
13948         uint32_t cfg_mode, intr_mode;
13949
13950         /* Allocate memory for HBA structure */
13951         phba = lpfc_hba_alloc(pdev);
13952         if (!phba)
13953                 return -ENOMEM;
13954
13955         /* Perform generic PCI device enabling operation */
13956         error = lpfc_enable_pci_dev(phba);
13957         if (error)
13958                 goto out_free_phba;
13959
13960         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
13961         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
13962         if (error)
13963                 goto out_disable_pci_dev;
13964
13965         /* Set up SLI-3 specific device PCI memory space */
13966         error = lpfc_sli_pci_mem_setup(phba);
13967         if (error) {
13968                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13969                                 "1402 Failed to set up pci memory space.\n");
13970                 goto out_disable_pci_dev;
13971         }
13972
13973         /* Set up SLI-3 specific device driver resources */
13974         error = lpfc_sli_driver_resource_setup(phba);
13975         if (error) {
13976                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13977                                 "1404 Failed to set up driver resource.\n");
13978                 goto out_unset_pci_mem_s3;
13979         }
13980
13981         /* Initialize and populate the iocb list per host */
13982
13983         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
13984         if (error) {
13985                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13986                                 "1405 Failed to initialize iocb list.\n");
13987                 goto out_unset_driver_resource_s3;
13988         }
13989
13990         /* Set up common device driver resources */
13991         error = lpfc_setup_driver_resource_phase2(phba);
13992         if (error) {
13993                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13994                                 "1406 Failed to set up driver resource.\n");
13995                 goto out_free_iocb_list;
13996         }
13997
13998         /* Get the default values for Model Name and Description */
13999         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
14000
14001         /* Create SCSI host to the physical port */
14002         error = lpfc_create_shost(phba);
14003         if (error) {
14004                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14005                                 "1407 Failed to create scsi host.\n");
14006                 goto out_unset_driver_resource;
14007         }
14008
14009         /* Configure sysfs attributes */
14010         vport = phba->pport;
14011         error = lpfc_alloc_sysfs_attr(vport);
14012         if (error) {
14013                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14014                                 "1476 Failed to allocate sysfs attr\n");
14015                 goto out_destroy_shost;
14016         }
14017
14018         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
14019         /* Now, trying to enable interrupt and bring up the device */
14020         cfg_mode = phba->cfg_use_msi;
14021         while (true) {
14022                 /* Put device to a known state before enabling interrupt */
14023                 lpfc_stop_port(phba);
14024                 /* Configure and enable interrupt */
14025                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
14026                 if (intr_mode == LPFC_INTR_ERROR) {
14027                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14028                                         "0431 Failed to enable interrupt.\n");
14029                         error = -ENODEV;
14030                         goto out_free_sysfs_attr;
14031                 }
14032                 /* SLI-3 HBA setup */
14033                 if (lpfc_sli_hba_setup(phba)) {
14034                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14035                                         "1477 Failed to set up hba\n");
14036                         error = -ENODEV;
14037                         goto out_remove_device;
14038                 }
14039
14040                 /* Wait 50ms for the interrupts of previous mailbox commands */
14041                 msleep(50);
14042                 /* Check active interrupts on message signaled interrupts */
14043                 if (intr_mode == 0 ||
14044                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
14045                         /* Log the current active interrupt mode */
14046                         phba->intr_mode = intr_mode;
14047                         lpfc_log_intr_mode(phba, intr_mode);
14048                         break;
14049                 } else {
14050                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
14051                                         "0447 Configure interrupt mode (%d) "
14052                                         "failed active interrupt test.\n",
14053                                         intr_mode);
14054                         /* Disable the current interrupt mode */
14055                         lpfc_sli_disable_intr(phba);
14056                         /* Try next level of interrupt mode */
14057                         cfg_mode = --intr_mode;
14058                 }
14059         }
14060
14061         /* Perform post initialization setup */
14062         lpfc_post_init_setup(phba);
14063
14064         /* Check if there are static vports to be created. */
14065         lpfc_create_static_vport(phba);
14066
14067         return 0;
14068
14069 out_remove_device:
14070         lpfc_unset_hba(phba);
14071 out_free_sysfs_attr:
14072         lpfc_free_sysfs_attr(vport);
14073 out_destroy_shost:
14074         lpfc_destroy_shost(phba);
14075 out_unset_driver_resource:
14076         lpfc_unset_driver_resource_phase2(phba);
14077 out_free_iocb_list:
14078         lpfc_free_iocb_list(phba);
14079 out_unset_driver_resource_s3:
14080         lpfc_sli_driver_resource_unset(phba);
14081 out_unset_pci_mem_s3:
14082         lpfc_sli_pci_mem_unset(phba);
14083 out_disable_pci_dev:
14084         lpfc_disable_pci_dev(phba);
14085         if (shost)
14086                 scsi_host_put(shost);
14087 out_free_phba:
14088         lpfc_hba_free(phba);
14089         return error;
14090 }
14091
14092 /**
14093  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
14094  * @pdev: pointer to PCI device
14095  *
14096  * This routine is to be called to disattach a device with SLI-3 interface
14097  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
14098  * removed from PCI bus, it performs all the necessary cleanup for the HBA
14099  * device to be removed from the PCI subsystem properly.
14100  **/
14101 static void
14102 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
14103 {
14104         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
14105         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
14106         struct lpfc_vport **vports;
14107         struct lpfc_hba   *phba = vport->phba;
14108         int i;
14109
14110         set_bit(FC_UNLOADING, &vport->load_flag);
14111
14112         lpfc_free_sysfs_attr(vport);
14113
14114         /* Release all the vports against this physical port */
14115         vports = lpfc_create_vport_work_array(phba);
14116         if (vports != NULL)
14117                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
14118                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
14119                                 continue;
14120                         fc_vport_terminate(vports[i]->fc_vport);
14121                 }
14122         lpfc_destroy_vport_work_array(phba, vports);
14123
14124         /* Remove FC host with the physical port */
14125         fc_remove_host(shost);
14126         scsi_remove_host(shost);
14127
14128         /* Clean up all nodes, mailboxes and IOs. */
14129         lpfc_cleanup(vport);
14130
14131         /*
14132          * Bring down the SLI Layer. This step disable all interrupts,
14133          * clears the rings, discards all mailbox commands, and resets
14134          * the HBA.
14135          */
14136
14137         /* HBA interrupt will be disabled after this call */
14138         lpfc_sli_hba_down(phba);
14139         /* Stop kthread signal shall trigger work_done one more time */
14140         kthread_stop(phba->worker_thread);
14141         /* Final cleanup of txcmplq and reset the HBA */
14142         lpfc_sli_brdrestart(phba);
14143
14144         kfree(phba->vpi_bmask);
14145         kfree(phba->vpi_ids);
14146
14147         lpfc_stop_hba_timers(phba);
14148         spin_lock_irq(&phba->port_list_lock);
14149         list_del_init(&vport->listentry);
14150         spin_unlock_irq(&phba->port_list_lock);
14151
14152         lpfc_debugfs_terminate(vport);
14153
14154         /* Disable SR-IOV if enabled */
14155         if (phba->cfg_sriov_nr_virtfn)
14156                 pci_disable_sriov(pdev);
14157
14158         /* Disable interrupt */
14159         lpfc_sli_disable_intr(phba);
14160
14161         scsi_host_put(shost);
14162
14163         /*
14164          * Call scsi_free before mem_free since scsi bufs are released to their
14165          * corresponding pools here.
14166          */
14167         lpfc_scsi_free(phba);
14168         lpfc_free_iocb_list(phba);
14169
14170         lpfc_mem_free_all(phba);
14171
14172         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
14173                           phba->hbqslimp.virt, phba->hbqslimp.phys);
14174
14175         /* Free resources associated with SLI2 interface */
14176         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
14177                           phba->slim2p.virt, phba->slim2p.phys);
14178
14179         /* unmap adapter SLIM and Control Registers */
14180         iounmap(phba->ctrl_regs_memmap_p);
14181         iounmap(phba->slim_memmap_p);
14182
14183         lpfc_hba_free(phba);
14184
14185         pci_release_mem_regions(pdev);
14186         pci_disable_device(pdev);
14187 }
14188
14189 /**
14190  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
14191  * @dev_d: pointer to device
14192  *
14193  * This routine is to be called from the kernel's PCI subsystem to support
14194  * system Power Management (PM) to device with SLI-3 interface spec. When
14195  * PM invokes this method, it quiesces the device by stopping the driver's
14196  * worker thread for the device, turning off device's interrupt and DMA,
14197  * and bring the device offline. Note that as the driver implements the
14198  * minimum PM requirements to a power-aware driver's PM support for the
14199  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
14200  * to the suspend() method call will be treated as SUSPEND and the driver will
14201  * fully reinitialize its device during resume() method call, the driver will
14202  * set device to PCI_D3hot state in PCI config space instead of setting it
14203  * according to the @msg provided by the PM.
14204  *
14205  * Return code
14206  *      0 - driver suspended the device
14207  *      Error otherwise
14208  **/
14209 static int __maybe_unused
14210 lpfc_pci_suspend_one_s3(struct device *dev_d)
14211 {
14212         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
14213         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14214
14215         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
14216                         "0473 PCI device Power Management suspend.\n");
14217
14218         /* Bring down the device */
14219         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
14220         lpfc_offline(phba);
14221         kthread_stop(phba->worker_thread);
14222
14223         /* Disable interrupt from device */
14224         lpfc_sli_disable_intr(phba);
14225
14226         return 0;
14227 }
14228
14229 /**
14230  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
14231  * @dev_d: pointer to device
14232  *
14233  * This routine is to be called from the kernel's PCI subsystem to support
14234  * system Power Management (PM) to device with SLI-3 interface spec. When PM
14235  * invokes this method, it restores the device's PCI config space state and
14236  * fully reinitializes the device and brings it online. Note that as the
14237  * driver implements the minimum PM requirements to a power-aware driver's
14238  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
14239  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
14240  * driver will fully reinitialize its device during resume() method call,
14241  * the device will be set to PCI_D0 directly in PCI config space before
14242  * restoring the state.
14243  *
14244  * Return code
14245  *      0 - driver suspended the device
14246  *      Error otherwise
14247  **/
14248 static int __maybe_unused
14249 lpfc_pci_resume_one_s3(struct device *dev_d)
14250 {
14251         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
14252         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14253         uint32_t intr_mode;
14254         int error;
14255
14256         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
14257                         "0452 PCI device Power Management resume.\n");
14258
14259         /* Startup the kernel thread for this host adapter. */
14260         phba->worker_thread = kthread_run(lpfc_do_work, phba,
14261                                         "lpfc_worker_%d", phba->brd_no);
14262         if (IS_ERR(phba->worker_thread)) {
14263                 error = PTR_ERR(phba->worker_thread);
14264                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14265                                 "0434 PM resume failed to start worker "
14266                                 "thread: error=x%x.\n", error);
14267                 return error;
14268         }
14269
14270         /* Init cpu_map array */
14271         lpfc_cpu_map_array_init(phba);
14272         /* Init hba_eq_hdl array */
14273         lpfc_hba_eq_hdl_array_init(phba);
14274         /* Configure and enable interrupt */
14275         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
14276         if (intr_mode == LPFC_INTR_ERROR) {
14277                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14278                                 "0430 PM resume Failed to enable interrupt\n");
14279                 return -EIO;
14280         } else
14281                 phba->intr_mode = intr_mode;
14282
14283         /* Restart HBA and bring it online */
14284         lpfc_sli_brdrestart(phba);
14285         lpfc_online(phba);
14286
14287         /* Log the current active interrupt mode */
14288         lpfc_log_intr_mode(phba, phba->intr_mode);
14289
14290         return 0;
14291 }
14292
14293 /**
14294  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
14295  * @phba: pointer to lpfc hba data structure.
14296  *
14297  * This routine is called to prepare the SLI3 device for PCI slot recover. It
14298  * aborts all the outstanding SCSI I/Os to the pci device.
14299  **/
14300 static void
14301 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
14302 {
14303         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14304                         "2723 PCI channel I/O abort preparing for recovery\n");
14305
14306         /*
14307          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
14308          * and let the SCSI mid-layer to retry them to recover.
14309          */
14310         lpfc_sli_abort_fcp_rings(phba);
14311 }
14312
14313 /**
14314  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
14315  * @phba: pointer to lpfc hba data structure.
14316  *
14317  * This routine is called to prepare the SLI3 device for PCI slot reset. It
14318  * disables the device interrupt and pci device, and aborts the internal FCP
14319  * pending I/Os.
14320  **/
14321 static void
14322 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
14323 {
14324         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14325                         "2710 PCI channel disable preparing for reset\n");
14326
14327         /* Block any management I/Os to the device */
14328         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
14329
14330         /* Block all SCSI devices' I/Os on the host */
14331         lpfc_scsi_dev_block(phba);
14332
14333         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
14334         lpfc_sli_flush_io_rings(phba);
14335
14336         /* stop all timers */
14337         lpfc_stop_hba_timers(phba);
14338
14339         /* Disable interrupt and pci device */
14340         lpfc_sli_disable_intr(phba);
14341         pci_disable_device(phba->pcidev);
14342 }
14343
14344 /**
14345  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
14346  * @phba: pointer to lpfc hba data structure.
14347  *
14348  * This routine is called to prepare the SLI3 device for PCI slot permanently
14349  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
14350  * pending I/Os.
14351  **/
14352 static void
14353 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
14354 {
14355         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14356                         "2711 PCI channel permanent disable for failure\n");
14357         /* Block all SCSI devices' I/Os on the host */
14358         lpfc_scsi_dev_block(phba);
14359         lpfc_sli4_prep_dev_for_reset(phba);
14360
14361         /* stop all timers */
14362         lpfc_stop_hba_timers(phba);
14363
14364         /* Clean up all driver's outstanding SCSI I/Os */
14365         lpfc_sli_flush_io_rings(phba);
14366 }
14367
14368 /**
14369  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
14370  * @pdev: pointer to PCI device.
14371  * @state: the current PCI connection state.
14372  *
14373  * This routine is called from the PCI subsystem for I/O error handling to
14374  * device with SLI-3 interface spec. This function is called by the PCI
14375  * subsystem after a PCI bus error affecting this device has been detected.
14376  * When this function is invoked, it will need to stop all the I/Os and
14377  * interrupt(s) to the device. Once that is done, it will return
14378  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
14379  * as desired.
14380  *
14381  * Return codes
14382  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
14383  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
14384  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
14385  **/
14386 static pci_ers_result_t
14387 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
14388 {
14389         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14390         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14391
14392         switch (state) {
14393         case pci_channel_io_normal:
14394                 /* Non-fatal error, prepare for recovery */
14395                 lpfc_sli_prep_dev_for_recover(phba);
14396                 return PCI_ERS_RESULT_CAN_RECOVER;
14397         case pci_channel_io_frozen:
14398                 /* Fatal error, prepare for slot reset */
14399                 lpfc_sli_prep_dev_for_reset(phba);
14400                 return PCI_ERS_RESULT_NEED_RESET;
14401         case pci_channel_io_perm_failure:
14402                 /* Permanent failure, prepare for device down */
14403                 lpfc_sli_prep_dev_for_perm_failure(phba);
14404                 return PCI_ERS_RESULT_DISCONNECT;
14405         default:
14406                 /* Unknown state, prepare and request slot reset */
14407                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14408                                 "0472 Unknown PCI error state: x%x\n", state);
14409                 lpfc_sli_prep_dev_for_reset(phba);
14410                 return PCI_ERS_RESULT_NEED_RESET;
14411         }
14412 }
14413
14414 /**
14415  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
14416  * @pdev: pointer to PCI device.
14417  *
14418  * This routine is called from the PCI subsystem for error handling to
14419  * device with SLI-3 interface spec. This is called after PCI bus has been
14420  * reset to restart the PCI card from scratch, as if from a cold-boot.
14421  * During the PCI subsystem error recovery, after driver returns
14422  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
14423  * recovery and then call this routine before calling the .resume method
14424  * to recover the device. This function will initialize the HBA device,
14425  * enable the interrupt, but it will just put the HBA to offline state
14426  * without passing any I/O traffic.
14427  *
14428  * Return codes
14429  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
14430  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
14431  */
14432 static pci_ers_result_t
14433 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
14434 {
14435         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14436         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14437         struct lpfc_sli *psli = &phba->sli;
14438         uint32_t intr_mode;
14439
14440         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
14441         if (pci_enable_device_mem(pdev)) {
14442                 printk(KERN_ERR "lpfc: Cannot re-enable "
14443                         "PCI device after reset.\n");
14444                 return PCI_ERS_RESULT_DISCONNECT;
14445         }
14446
14447         pci_restore_state(pdev);
14448
14449         /*
14450          * As the new kernel behavior of pci_restore_state() API call clears
14451          * device saved_state flag, need to save the restored state again.
14452          */
14453         pci_save_state(pdev);
14454
14455         if (pdev->is_busmaster)
14456                 pci_set_master(pdev);
14457
14458         spin_lock_irq(&phba->hbalock);
14459         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
14460         spin_unlock_irq(&phba->hbalock);
14461
14462         /* Configure and enable interrupt */
14463         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
14464         if (intr_mode == LPFC_INTR_ERROR) {
14465                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14466                                 "0427 Cannot re-enable interrupt after "
14467                                 "slot reset.\n");
14468                 return PCI_ERS_RESULT_DISCONNECT;
14469         } else
14470                 phba->intr_mode = intr_mode;
14471
14472         /* Take device offline, it will perform cleanup */
14473         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
14474         lpfc_offline(phba);
14475         lpfc_sli_brdrestart(phba);
14476
14477         /* Log the current active interrupt mode */
14478         lpfc_log_intr_mode(phba, phba->intr_mode);
14479
14480         return PCI_ERS_RESULT_RECOVERED;
14481 }
14482
14483 /**
14484  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
14485  * @pdev: pointer to PCI device
14486  *
14487  * This routine is called from the PCI subsystem for error handling to device
14488  * with SLI-3 interface spec. It is called when kernel error recovery tells
14489  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
14490  * error recovery. After this call, traffic can start to flow from this device
14491  * again.
14492  */
14493 static void
14494 lpfc_io_resume_s3(struct pci_dev *pdev)
14495 {
14496         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14497         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14498
14499         /* Bring device online, it will be no-op for non-fatal error resume */
14500         lpfc_online(phba);
14501 }
14502
14503 /**
14504  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
14505  * @phba: pointer to lpfc hba data structure.
14506  *
14507  * returns the number of ELS/CT IOCBs to reserve
14508  **/
14509 int
14510 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
14511 {
14512         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
14513
14514         if (phba->sli_rev == LPFC_SLI_REV4) {
14515                 if (max_xri <= 100)
14516                         return 10;
14517                 else if (max_xri <= 256)
14518                         return 25;
14519                 else if (max_xri <= 512)
14520                         return 50;
14521                 else if (max_xri <= 1024)
14522                         return 100;
14523                 else if (max_xri <= 1536)
14524                         return 150;
14525                 else if (max_xri <= 2048)
14526                         return 200;
14527                 else
14528                         return 250;
14529         } else
14530                 return 0;
14531 }
14532
14533 /**
14534  * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve
14535  * @phba: pointer to lpfc hba data structure.
14536  *
14537  * returns the number of ELS/CT + NVMET IOCBs to reserve
14538  **/
14539 int
14540 lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
14541 {
14542         int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
14543
14544         if (phba->nvmet_support)
14545                 max_xri += LPFC_NVMET_BUF_POST;
14546         return max_xri;
14547 }
14548
14549
14550 static int
14551 lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,
14552         uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,
14553         const struct firmware *fw)
14554 {
14555         int rc;
14556         u8 sli_family;
14557
14558         sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
14559         /* Three cases:  (1) FW was not supported on the detected adapter.
14560          * (2) FW update has been locked out administratively.
14561          * (3) Some other error during FW update.
14562          * In each case, an unmaskable message is written to the console
14563          * for admin diagnosis.
14564          */
14565         if (offset == ADD_STATUS_FW_NOT_SUPPORTED ||
14566             (sli_family == LPFC_SLI_INTF_FAMILY_G6 &&
14567              magic_number != MAGIC_NUMBER_G6) ||
14568             (sli_family == LPFC_SLI_INTF_FAMILY_G7 &&
14569              magic_number != MAGIC_NUMBER_G7) ||
14570             (sli_family == LPFC_SLI_INTF_FAMILY_G7P &&
14571              magic_number != MAGIC_NUMBER_G7P)) {
14572                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14573                                 "3030 This firmware version is not supported on"
14574                                 " this HBA model. Device:%x Magic:%x Type:%x "
14575                                 "ID:%x Size %d %zd\n",
14576                                 phba->pcidev->device, magic_number, ftype, fid,
14577                                 fsize, fw->size);
14578                 rc = -EINVAL;
14579         } else if (offset == ADD_STATUS_FW_DOWNLOAD_HW_DISABLED) {
14580                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14581                                 "3021 Firmware downloads have been prohibited "
14582                                 "by a system configuration setting on "
14583                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
14584                                 "%zd\n",
14585                                 phba->pcidev->device, magic_number, ftype, fid,
14586                                 fsize, fw->size);
14587                 rc = -EACCES;
14588         } else {
14589                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14590                                 "3022 FW Download failed. Add Status x%x "
14591                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
14592                                 "%zd\n",
14593                                 offset, phba->pcidev->device, magic_number,
14594                                 ftype, fid, fsize, fw->size);
14595                 rc = -EIO;
14596         }
14597         return rc;
14598 }
14599
14600 /**
14601  * lpfc_write_firmware - attempt to write a firmware image to the port
14602  * @fw: pointer to firmware image returned from request_firmware.
14603  * @context: pointer to firmware image returned from request_firmware.
14604  *
14605  **/
14606 static void
14607 lpfc_write_firmware(const struct firmware *fw, void *context)
14608 {
14609         struct lpfc_hba *phba = (struct lpfc_hba *)context;
14610         char fwrev[FW_REV_STR_SIZE];
14611         struct lpfc_grp_hdr *image;
14612         struct list_head dma_buffer_list;
14613         int i, rc = 0;
14614         struct lpfc_dmabuf *dmabuf, *next;
14615         uint32_t offset = 0, temp_offset = 0;
14616         uint32_t magic_number, ftype, fid, fsize;
14617
14618         /* It can be null in no-wait mode, sanity check */
14619         if (!fw) {
14620                 rc = -ENXIO;
14621                 goto out;
14622         }
14623         image = (struct lpfc_grp_hdr *)fw->data;
14624
14625         magic_number = be32_to_cpu(image->magic_number);
14626         ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);
14627         fid = bf_get_be32(lpfc_grp_hdr_id, image);
14628         fsize = be32_to_cpu(image->size);
14629
14630         INIT_LIST_HEAD(&dma_buffer_list);
14631         lpfc_decode_firmware_rev(phba, fwrev, 1);
14632         if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
14633                 lpfc_log_msg(phba, KERN_NOTICE, LOG_INIT | LOG_SLI,
14634                              "3023 Updating Firmware, Current Version:%s "
14635                              "New Version:%s\n",
14636                              fwrev, image->revision);
14637                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
14638                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
14639                                          GFP_KERNEL);
14640                         if (!dmabuf) {
14641                                 rc = -ENOMEM;
14642                                 goto release_out;
14643                         }
14644                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
14645                                                           SLI4_PAGE_SIZE,
14646                                                           &dmabuf->phys,
14647                                                           GFP_KERNEL);
14648                         if (!dmabuf->virt) {
14649                                 kfree(dmabuf);
14650                                 rc = -ENOMEM;
14651                                 goto release_out;
14652                         }
14653                         list_add_tail(&dmabuf->list, &dma_buffer_list);
14654                 }
14655                 while (offset < fw->size) {
14656                         temp_offset = offset;
14657                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
14658                                 if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
14659                                         memcpy(dmabuf->virt,
14660                                                fw->data + temp_offset,
14661                                                fw->size - temp_offset);
14662                                         temp_offset = fw->size;
14663                                         break;
14664                                 }
14665                                 memcpy(dmabuf->virt, fw->data + temp_offset,
14666                                        SLI4_PAGE_SIZE);
14667                                 temp_offset += SLI4_PAGE_SIZE;
14668                         }
14669                         rc = lpfc_wr_object(phba, &dma_buffer_list,
14670                                     (fw->size - offset), &offset);
14671                         if (rc) {
14672                                 rc = lpfc_log_write_firmware_error(phba, offset,
14673                                                                    magic_number,
14674                                                                    ftype,
14675                                                                    fid,
14676                                                                    fsize,
14677                                                                    fw);
14678                                 goto release_out;
14679                         }
14680                 }
14681                 rc = offset;
14682         } else
14683                 lpfc_log_msg(phba, KERN_NOTICE, LOG_INIT | LOG_SLI,
14684                              "3029 Skipped Firmware update, Current "
14685                              "Version:%s New Version:%s\n",
14686                              fwrev, image->revision);
14687
14688 release_out:
14689         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
14690                 list_del(&dmabuf->list);
14691                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
14692                                   dmabuf->virt, dmabuf->phys);
14693                 kfree(dmabuf);
14694         }
14695         release_firmware(fw);
14696 out:
14697         if (rc < 0)
14698                 lpfc_log_msg(phba, KERN_ERR, LOG_INIT | LOG_SLI,
14699                              "3062 Firmware update error, status %d.\n", rc);
14700         else
14701                 lpfc_log_msg(phba, KERN_NOTICE, LOG_INIT | LOG_SLI,
14702                              "3024 Firmware update success: size %d.\n", rc);
14703 }
14704
14705 /**
14706  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
14707  * @phba: pointer to lpfc hba data structure.
14708  * @fw_upgrade: which firmware to update.
14709  *
14710  * This routine is called to perform Linux generic firmware upgrade on device
14711  * that supports such feature.
14712  **/
14713 int
14714 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
14715 {
14716         char file_name[ELX_FW_NAME_SIZE] = {0};
14717         int ret;
14718         const struct firmware *fw;
14719
14720         /* Only supported on SLI4 interface type 2 for now */
14721         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
14722             LPFC_SLI_INTF_IF_TYPE_2)
14723                 return -EPERM;
14724
14725         scnprintf(file_name, sizeof(file_name), "%s.grp", phba->ModelName);
14726
14727         if (fw_upgrade == INT_FW_UPGRADE) {
14728                 ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT,
14729                                         file_name, &phba->pcidev->dev,
14730                                         GFP_KERNEL, (void *)phba,
14731                                         lpfc_write_firmware);
14732         } else if (fw_upgrade == RUN_FW_UPGRADE) {
14733                 ret = request_firmware(&fw, file_name, &phba->pcidev->dev);
14734                 if (!ret)
14735                         lpfc_write_firmware(fw, (void *)phba);
14736         } else {
14737                 ret = -EINVAL;
14738         }
14739
14740         return ret;
14741 }
14742
14743 /**
14744  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
14745  * @pdev: pointer to PCI device
14746  * @pid: pointer to PCI device identifier
14747  *
14748  * This routine is called from the kernel's PCI subsystem to device with
14749  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
14750  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
14751  * information of the device and driver to see if the driver state that it
14752  * can support this kind of device. If the match is successful, the driver
14753  * core invokes this routine. If this routine determines it can claim the HBA,
14754  * it does all the initialization that it needs to do to handle the HBA
14755  * properly.
14756  *
14757  * Return code
14758  *      0 - driver can claim the device
14759  *      negative value - driver can not claim the device
14760  **/
14761 static int
14762 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
14763 {
14764         struct lpfc_hba   *phba;
14765         struct lpfc_vport *vport = NULL;
14766         struct Scsi_Host  *shost = NULL;
14767         int error;
14768         uint32_t cfg_mode, intr_mode;
14769
14770         /* Allocate memory for HBA structure */
14771         phba = lpfc_hba_alloc(pdev);
14772         if (!phba)
14773                 return -ENOMEM;
14774
14775         INIT_LIST_HEAD(&phba->poll_list);
14776
14777         /* Perform generic PCI device enabling operation */
14778         error = lpfc_enable_pci_dev(phba);
14779         if (error)
14780                 goto out_free_phba;
14781
14782         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
14783         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
14784         if (error)
14785                 goto out_disable_pci_dev;
14786
14787         /* Set up SLI-4 specific device PCI memory space */
14788         error = lpfc_sli4_pci_mem_setup(phba);
14789         if (error) {
14790                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14791                                 "1410 Failed to set up pci memory space.\n");
14792                 goto out_disable_pci_dev;
14793         }
14794
14795         /* Set up SLI-4 Specific device driver resources */
14796         error = lpfc_sli4_driver_resource_setup(phba);
14797         if (error) {
14798                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14799                                 "1412 Failed to set up driver resource.\n");
14800                 goto out_unset_pci_mem_s4;
14801         }
14802
14803         spin_lock_init(&phba->rrq_list_lock);
14804         INIT_LIST_HEAD(&phba->active_rrq_list);
14805         INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
14806
14807         /* Set up common device driver resources */
14808         error = lpfc_setup_driver_resource_phase2(phba);
14809         if (error) {
14810                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14811                                 "1414 Failed to set up driver resource.\n");
14812                 goto out_unset_driver_resource_s4;
14813         }
14814
14815         /* Get the default values for Model Name and Description */
14816         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
14817
14818         /* Now, trying to enable interrupt and bring up the device */
14819         cfg_mode = phba->cfg_use_msi;
14820
14821         /* Put device to a known state before enabling interrupt */
14822         phba->pport = NULL;
14823         lpfc_stop_port(phba);
14824
14825         /* Init cpu_map array */
14826         lpfc_cpu_map_array_init(phba);
14827
14828         /* Init hba_eq_hdl array */
14829         lpfc_hba_eq_hdl_array_init(phba);
14830
14831         /* Configure and enable interrupt */
14832         intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
14833         if (intr_mode == LPFC_INTR_ERROR) {
14834                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14835                                 "0426 Failed to enable interrupt.\n");
14836                 error = -ENODEV;
14837                 goto out_unset_driver_resource;
14838         }
14839         /* Default to single EQ for non-MSI-X */
14840         if (phba->intr_type != MSIX) {
14841                 phba->cfg_irq_chann = 1;
14842                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
14843                         if (phba->nvmet_support)
14844                                 phba->cfg_nvmet_mrq = 1;
14845                 }
14846         }
14847         lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
14848
14849         /* Create SCSI host to the physical port */
14850         error = lpfc_create_shost(phba);
14851         if (error) {
14852                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14853                                 "1415 Failed to create scsi host.\n");
14854                 goto out_disable_intr;
14855         }
14856         vport = phba->pport;
14857         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
14858
14859         /* Configure sysfs attributes */
14860         error = lpfc_alloc_sysfs_attr(vport);
14861         if (error) {
14862                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14863                                 "1416 Failed to allocate sysfs attr\n");
14864                 goto out_destroy_shost;
14865         }
14866
14867         /* Set up SLI-4 HBA */
14868         if (lpfc_sli4_hba_setup(phba)) {
14869                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14870                                 "1421 Failed to set up hba\n");
14871                 error = -ENODEV;
14872                 goto out_free_sysfs_attr;
14873         }
14874
14875         /* Log the current active interrupt mode */
14876         phba->intr_mode = intr_mode;
14877         lpfc_log_intr_mode(phba, intr_mode);
14878
14879         /* Perform post initialization setup */
14880         lpfc_post_init_setup(phba);
14881
14882         /* NVME support in FW earlier in the driver load corrects the
14883          * FC4 type making a check for nvme_support unnecessary.
14884          */
14885         if (phba->nvmet_support == 0) {
14886                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
14887                         /* Create NVME binding with nvme_fc_transport. This
14888                          * ensures the vport is initialized.  If the localport
14889                          * create fails, it should not unload the driver to
14890                          * support field issues.
14891                          */
14892                         error = lpfc_nvme_create_localport(vport);
14893                         if (error) {
14894                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14895                                                 "6004 NVME registration "
14896                                                 "failed, error x%x\n",
14897                                                 error);
14898                         }
14899                 }
14900         }
14901
14902         /* check for firmware upgrade or downgrade */
14903         if (phba->cfg_request_firmware_upgrade)
14904                 lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
14905
14906         /* Check if there are static vports to be created. */
14907         lpfc_create_static_vport(phba);
14908
14909         timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);
14910         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state, &phba->cpuhp);
14911
14912         return 0;
14913
14914 out_free_sysfs_attr:
14915         lpfc_free_sysfs_attr(vport);
14916 out_destroy_shost:
14917         lpfc_destroy_shost(phba);
14918 out_disable_intr:
14919         lpfc_sli4_disable_intr(phba);
14920 out_unset_driver_resource:
14921         lpfc_unset_driver_resource_phase2(phba);
14922 out_unset_driver_resource_s4:
14923         lpfc_sli4_driver_resource_unset(phba);
14924 out_unset_pci_mem_s4:
14925         lpfc_sli4_pci_mem_unset(phba);
14926 out_disable_pci_dev:
14927         lpfc_disable_pci_dev(phba);
14928         if (shost)
14929                 scsi_host_put(shost);
14930 out_free_phba:
14931         lpfc_hba_free(phba);
14932         return error;
14933 }
14934
14935 /**
14936  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
14937  * @pdev: pointer to PCI device
14938  *
14939  * This routine is called from the kernel's PCI subsystem to device with
14940  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
14941  * removed from PCI bus, it performs all the necessary cleanup for the HBA
14942  * device to be removed from the PCI subsystem properly.
14943  **/
14944 static void
14945 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
14946 {
14947         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14948         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
14949         struct lpfc_vport **vports;
14950         struct lpfc_hba *phba = vport->phba;
14951         int i;
14952
14953         /* Mark the device unloading flag */
14954         set_bit(FC_UNLOADING, &vport->load_flag);
14955         if (phba->cgn_i)
14956                 lpfc_unreg_congestion_buf(phba);
14957
14958         lpfc_free_sysfs_attr(vport);
14959
14960         /* Release all the vports against this physical port */
14961         vports = lpfc_create_vport_work_array(phba);
14962         if (vports != NULL)
14963                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
14964                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
14965                                 continue;
14966                         fc_vport_terminate(vports[i]->fc_vport);
14967                 }
14968         lpfc_destroy_vport_work_array(phba, vports);
14969
14970         /* Remove FC host with the physical port */
14971         fc_remove_host(shost);
14972         scsi_remove_host(shost);
14973
14974         /* Perform ndlp cleanup on the physical port.  The nvme and nvmet
14975          * localports are destroyed after to cleanup all transport memory.
14976          */
14977         lpfc_cleanup(vport);
14978         lpfc_nvmet_destroy_targetport(phba);
14979         lpfc_nvme_destroy_localport(vport);
14980
14981         /* De-allocate multi-XRI pools */
14982         if (phba->cfg_xri_rebalancing)
14983                 lpfc_destroy_multixri_pools(phba);
14984
14985         /*
14986          * Bring down the SLI Layer. This step disables all interrupts,
14987          * clears the rings, discards all mailbox commands, and resets
14988          * the HBA FCoE function.
14989          */
14990         lpfc_debugfs_terminate(vport);
14991
14992         lpfc_stop_hba_timers(phba);
14993         spin_lock_irq(&phba->port_list_lock);
14994         list_del_init(&vport->listentry);
14995         spin_unlock_irq(&phba->port_list_lock);
14996
14997         /* Perform scsi free before driver resource_unset since scsi
14998          * buffers are released to their corresponding pools here.
14999          */
15000         lpfc_io_free(phba);
15001         lpfc_free_iocb_list(phba);
15002         lpfc_sli4_hba_unset(phba);
15003
15004         lpfc_unset_driver_resource_phase2(phba);
15005         lpfc_sli4_driver_resource_unset(phba);
15006
15007         /* Unmap adapter Control and Doorbell registers */
15008         lpfc_sli4_pci_mem_unset(phba);
15009
15010         /* Release PCI resources and disable device's PCI function */
15011         scsi_host_put(shost);
15012         lpfc_disable_pci_dev(phba);
15013
15014         /* Finally, free the driver's device data structure */
15015         lpfc_hba_free(phba);
15016
15017         return;
15018 }
15019
15020 /**
15021  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
15022  * @dev_d: pointer to device
15023  *
15024  * This routine is called from the kernel's PCI subsystem to support system
15025  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
15026  * this method, it quiesces the device by stopping the driver's worker
15027  * thread for the device, turning off device's interrupt and DMA, and bring
15028  * the device offline. Note that as the driver implements the minimum PM
15029  * requirements to a power-aware driver's PM support for suspend/resume -- all
15030  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
15031  * method call will be treated as SUSPEND and the driver will fully
15032  * reinitialize its device during resume() method call, the driver will set
15033  * device to PCI_D3hot state in PCI config space instead of setting it
15034  * according to the @msg provided by the PM.
15035  *
15036  * Return code
15037  *      0 - driver suspended the device
15038  *      Error otherwise
15039  **/
15040 static int __maybe_unused
15041 lpfc_pci_suspend_one_s4(struct device *dev_d)
15042 {
15043         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
15044         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15045
15046         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
15047                         "2843 PCI device Power Management suspend.\n");
15048
15049         /* Bring down the device */
15050         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
15051         lpfc_offline(phba);
15052         kthread_stop(phba->worker_thread);
15053
15054         /* Disable interrupt from device */
15055         lpfc_sli4_disable_intr(phba);
15056         lpfc_sli4_queue_destroy(phba);
15057
15058         return 0;
15059 }
15060
15061 /**
15062  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
15063  * @dev_d: pointer to device
15064  *
15065  * This routine is called from the kernel's PCI subsystem to support system
15066  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
15067  * this method, it restores the device's PCI config space state and fully
15068  * reinitializes the device and brings it online. Note that as the driver
15069  * implements the minimum PM requirements to a power-aware driver's PM for
15070  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
15071  * to the suspend() method call will be treated as SUSPEND and the driver
15072  * will fully reinitialize its device during resume() method call, the device
15073  * will be set to PCI_D0 directly in PCI config space before restoring the
15074  * state.
15075  *
15076  * Return code
15077  *      0 - driver suspended the device
15078  *      Error otherwise
15079  **/
15080 static int __maybe_unused
15081 lpfc_pci_resume_one_s4(struct device *dev_d)
15082 {
15083         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
15084         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15085         uint32_t intr_mode;
15086         int error;
15087
15088         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
15089                         "0292 PCI device Power Management resume.\n");
15090
15091          /* Startup the kernel thread for this host adapter. */
15092         phba->worker_thread = kthread_run(lpfc_do_work, phba,
15093                                         "lpfc_worker_%d", phba->brd_no);
15094         if (IS_ERR(phba->worker_thread)) {
15095                 error = PTR_ERR(phba->worker_thread);
15096                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15097                                 "0293 PM resume failed to start worker "
15098                                 "thread: error=x%x.\n", error);
15099                 return error;
15100         }
15101
15102         /* Configure and enable interrupt */
15103         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
15104         if (intr_mode == LPFC_INTR_ERROR) {
15105                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15106                                 "0294 PM resume Failed to enable interrupt\n");
15107                 return -EIO;
15108         } else
15109                 phba->intr_mode = intr_mode;
15110
15111         /* Restart HBA and bring it online */
15112         lpfc_sli_brdrestart(phba);
15113         lpfc_online(phba);
15114
15115         /* Log the current active interrupt mode */
15116         lpfc_log_intr_mode(phba, phba->intr_mode);
15117
15118         return 0;
15119 }
15120
15121 /**
15122  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
15123  * @phba: pointer to lpfc hba data structure.
15124  *
15125  * This routine is called to prepare the SLI4 device for PCI slot recover. It
15126  * aborts all the outstanding SCSI I/Os to the pci device.
15127  **/
15128 static void
15129 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
15130 {
15131         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15132                         "2828 PCI channel I/O abort preparing for recovery\n");
15133         /*
15134          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
15135          * and let the SCSI mid-layer to retry them to recover.
15136          */
15137         lpfc_sli_abort_fcp_rings(phba);
15138 }
15139
15140 /**
15141  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
15142  * @phba: pointer to lpfc hba data structure.
15143  *
15144  * This routine is called to prepare the SLI4 device for PCI slot reset. It
15145  * disables the device interrupt and pci device, and aborts the internal FCP
15146  * pending I/Os.
15147  **/
15148 static void
15149 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
15150 {
15151         int offline =  pci_channel_offline(phba->pcidev);
15152
15153         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15154                         "2826 PCI channel disable preparing for reset offline"
15155                         " %d\n", offline);
15156
15157         /* Block any management I/Os to the device */
15158         lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
15159
15160
15161         /* HBA_PCI_ERR was set in io_error_detect */
15162         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
15163         /* Flush all driver's outstanding I/Os as we are to reset */
15164         lpfc_sli_flush_io_rings(phba);
15165         lpfc_offline(phba);
15166
15167         /* stop all timers */
15168         lpfc_stop_hba_timers(phba);
15169
15170         lpfc_sli4_queue_destroy(phba);
15171         /* Disable interrupt and pci device */
15172         lpfc_sli4_disable_intr(phba);
15173         pci_disable_device(phba->pcidev);
15174 }
15175
15176 /**
15177  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
15178  * @phba: pointer to lpfc hba data structure.
15179  *
15180  * This routine is called to prepare the SLI4 device for PCI slot permanently
15181  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
15182  * pending I/Os.
15183  **/
15184 static void
15185 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
15186 {
15187         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15188                         "2827 PCI channel permanent disable for failure\n");
15189
15190         /* Block all SCSI devices' I/Os on the host */
15191         lpfc_scsi_dev_block(phba);
15192
15193         /* stop all timers */
15194         lpfc_stop_hba_timers(phba);
15195
15196         /* Clean up all driver's outstanding I/Os */
15197         lpfc_sli_flush_io_rings(phba);
15198 }
15199
15200 /**
15201  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
15202  * @pdev: pointer to PCI device.
15203  * @state: the current PCI connection state.
15204  *
15205  * This routine is called from the PCI subsystem for error handling to device
15206  * with SLI-4 interface spec. This function is called by the PCI subsystem
15207  * after a PCI bus error affecting this device has been detected. When this
15208  * function is invoked, it will need to stop all the I/Os and interrupt(s)
15209  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
15210  * for the PCI subsystem to perform proper recovery as desired.
15211  *
15212  * Return codes
15213  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
15214  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15215  **/
15216 static pci_ers_result_t
15217 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
15218 {
15219         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15220         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15221         bool hba_pci_err;
15222
15223         switch (state) {
15224         case pci_channel_io_normal:
15225                 /* Non-fatal error, prepare for recovery */
15226                 lpfc_sli4_prep_dev_for_recover(phba);
15227                 return PCI_ERS_RESULT_CAN_RECOVER;
15228         case pci_channel_io_frozen:
15229                 hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags);
15230                 /* Fatal error, prepare for slot reset */
15231                 if (!hba_pci_err)
15232                         lpfc_sli4_prep_dev_for_reset(phba);
15233                 else
15234                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15235                                         "2832  Already handling PCI error "
15236                                         "state: x%x\n", state);
15237                 return PCI_ERS_RESULT_NEED_RESET;
15238         case pci_channel_io_perm_failure:
15239                 set_bit(HBA_PCI_ERR, &phba->bit_flags);
15240                 /* Permanent failure, prepare for device down */
15241                 lpfc_sli4_prep_dev_for_perm_failure(phba);
15242                 return PCI_ERS_RESULT_DISCONNECT;
15243         default:
15244                 hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags);
15245                 if (!hba_pci_err)
15246                         lpfc_sli4_prep_dev_for_reset(phba);
15247                 /* Unknown state, prepare and request slot reset */
15248                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15249                                 "2825 Unknown PCI error state: x%x\n", state);
15250                 lpfc_sli4_prep_dev_for_reset(phba);
15251                 return PCI_ERS_RESULT_NEED_RESET;
15252         }
15253 }
15254
15255 /**
15256  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
15257  * @pdev: pointer to PCI device.
15258  *
15259  * This routine is called from the PCI subsystem for error handling to device
15260  * with SLI-4 interface spec. It is called after PCI bus has been reset to
15261  * restart the PCI card from scratch, as if from a cold-boot. During the
15262  * PCI subsystem error recovery, after the driver returns
15263  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
15264  * recovery and then call this routine before calling the .resume method to
15265  * recover the device. This function will initialize the HBA device, enable
15266  * the interrupt, but it will just put the HBA to offline state without
15267  * passing any I/O traffic.
15268  *
15269  * Return codes
15270  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
15271  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15272  */
15273 static pci_ers_result_t
15274 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
15275 {
15276         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15277         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15278         struct lpfc_sli *psli = &phba->sli;
15279         uint32_t intr_mode;
15280         bool hba_pci_err;
15281
15282         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
15283         if (pci_enable_device_mem(pdev)) {
15284                 printk(KERN_ERR "lpfc: Cannot re-enable "
15285                        "PCI device after reset.\n");
15286                 return PCI_ERS_RESULT_DISCONNECT;
15287         }
15288
15289         pci_restore_state(pdev);
15290
15291         hba_pci_err = test_and_clear_bit(HBA_PCI_ERR, &phba->bit_flags);
15292         if (!hba_pci_err)
15293                 dev_info(&pdev->dev,
15294                          "hba_pci_err was not set, recovering slot reset.\n");
15295         /*
15296          * As the new kernel behavior of pci_restore_state() API call clears
15297          * device saved_state flag, need to save the restored state again.
15298          */
15299         pci_save_state(pdev);
15300
15301         if (pdev->is_busmaster)
15302                 pci_set_master(pdev);
15303
15304         spin_lock_irq(&phba->hbalock);
15305         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
15306         spin_unlock_irq(&phba->hbalock);
15307
15308         /* Init cpu_map array */
15309         lpfc_cpu_map_array_init(phba);
15310         /* Configure and enable interrupt */
15311         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
15312         if (intr_mode == LPFC_INTR_ERROR) {
15313                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15314                                 "2824 Cannot re-enable interrupt after "
15315                                 "slot reset.\n");
15316                 return PCI_ERS_RESULT_DISCONNECT;
15317         } else
15318                 phba->intr_mode = intr_mode;
15319         lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
15320
15321         /* Log the current active interrupt mode */
15322         lpfc_log_intr_mode(phba, phba->intr_mode);
15323
15324         return PCI_ERS_RESULT_RECOVERED;
15325 }
15326
15327 /**
15328  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
15329  * @pdev: pointer to PCI device
15330  *
15331  * This routine is called from the PCI subsystem for error handling to device
15332  * with SLI-4 interface spec. It is called when kernel error recovery tells
15333  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
15334  * error recovery. After this call, traffic can start to flow from this device
15335  * again.
15336  **/
15337 static void
15338 lpfc_io_resume_s4(struct pci_dev *pdev)
15339 {
15340         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15341         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15342
15343         /*
15344          * In case of slot reset, as function reset is performed through
15345          * mailbox command which needs DMA to be enabled, this operation
15346          * has to be moved to the io resume phase. Taking device offline
15347          * will perform the necessary cleanup.
15348          */
15349         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
15350                 /* Perform device reset */
15351                 lpfc_sli_brdrestart(phba);
15352                 /* Bring the device back online */
15353                 lpfc_online(phba);
15354         }
15355 }
15356
15357 /**
15358  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
15359  * @pdev: pointer to PCI device
15360  * @pid: pointer to PCI device identifier
15361  *
15362  * This routine is to be registered to the kernel's PCI subsystem. When an
15363  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
15364  * at PCI device-specific information of the device and driver to see if the
15365  * driver state that it can support this kind of device. If the match is
15366  * successful, the driver core invokes this routine. This routine dispatches
15367  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
15368  * do all the initialization that it needs to do to handle the HBA device
15369  * properly.
15370  *
15371  * Return code
15372  *      0 - driver can claim the device
15373  *      negative value - driver can not claim the device
15374  **/
15375 static int
15376 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
15377 {
15378         int rc;
15379         struct lpfc_sli_intf intf;
15380
15381         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
15382                 return -ENODEV;
15383
15384         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
15385             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
15386                 rc = lpfc_pci_probe_one_s4(pdev, pid);
15387         else
15388                 rc = lpfc_pci_probe_one_s3(pdev, pid);
15389
15390         return rc;
15391 }
15392
15393 /**
15394  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
15395  * @pdev: pointer to PCI device
15396  *
15397  * This routine is to be registered to the kernel's PCI subsystem. When an
15398  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
15399  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
15400  * remove routine, which will perform all the necessary cleanup for the
15401  * device to be removed from the PCI subsystem properly.
15402  **/
15403 static void
15404 lpfc_pci_remove_one(struct pci_dev *pdev)
15405 {
15406         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15407         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15408
15409         switch (phba->pci_dev_grp) {
15410         case LPFC_PCI_DEV_LP:
15411                 lpfc_pci_remove_one_s3(pdev);
15412                 break;
15413         case LPFC_PCI_DEV_OC:
15414                 lpfc_pci_remove_one_s4(pdev);
15415                 break;
15416         default:
15417                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15418                                 "1424 Invalid PCI device group: 0x%x\n",
15419                                 phba->pci_dev_grp);
15420                 break;
15421         }
15422         return;
15423 }
15424
15425 /**
15426  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
15427  * @dev: pointer to device
15428  *
15429  * This routine is to be registered to the kernel's PCI subsystem to support
15430  * system Power Management (PM). When PM invokes this method, it dispatches
15431  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
15432  * suspend the device.
15433  *
15434  * Return code
15435  *      0 - driver suspended the device
15436  *      Error otherwise
15437  **/
15438 static int __maybe_unused
15439 lpfc_pci_suspend_one(struct device *dev)
15440 {
15441         struct Scsi_Host *shost = dev_get_drvdata(dev);
15442         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15443         int rc = -ENODEV;
15444
15445         switch (phba->pci_dev_grp) {
15446         case LPFC_PCI_DEV_LP:
15447                 rc = lpfc_pci_suspend_one_s3(dev);
15448                 break;
15449         case LPFC_PCI_DEV_OC:
15450                 rc = lpfc_pci_suspend_one_s4(dev);
15451                 break;
15452         default:
15453                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15454                                 "1425 Invalid PCI device group: 0x%x\n",
15455                                 phba->pci_dev_grp);
15456                 break;
15457         }
15458         return rc;
15459 }
15460
15461 /**
15462  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
15463  * @dev: pointer to device
15464  *
15465  * This routine is to be registered to the kernel's PCI subsystem to support
15466  * system Power Management (PM). When PM invokes this method, it dispatches
15467  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
15468  * resume the device.
15469  *
15470  * Return code
15471  *      0 - driver suspended the device
15472  *      Error otherwise
15473  **/
15474 static int __maybe_unused
15475 lpfc_pci_resume_one(struct device *dev)
15476 {
15477         struct Scsi_Host *shost = dev_get_drvdata(dev);
15478         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15479         int rc = -ENODEV;
15480
15481         switch (phba->pci_dev_grp) {
15482         case LPFC_PCI_DEV_LP:
15483                 rc = lpfc_pci_resume_one_s3(dev);
15484                 break;
15485         case LPFC_PCI_DEV_OC:
15486                 rc = lpfc_pci_resume_one_s4(dev);
15487                 break;
15488         default:
15489                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15490                                 "1426 Invalid PCI device group: 0x%x\n",
15491                                 phba->pci_dev_grp);
15492                 break;
15493         }
15494         return rc;
15495 }
15496
15497 /**
15498  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
15499  * @pdev: pointer to PCI device.
15500  * @state: the current PCI connection state.
15501  *
15502  * This routine is registered to the PCI subsystem for error handling. This
15503  * function is called by the PCI subsystem after a PCI bus error affecting
15504  * this device has been detected. When this routine is invoked, it dispatches
15505  * the action to the proper SLI-3 or SLI-4 device error detected handling
15506  * routine, which will perform the proper error detected operation.
15507  *
15508  * Return codes
15509  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
15510  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15511  **/
15512 static pci_ers_result_t
15513 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
15514 {
15515         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15516         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15517         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
15518
15519         if (phba->link_state == LPFC_HBA_ERROR &&
15520             test_bit(HBA_IOQ_FLUSH, &phba->hba_flag))
15521                 return PCI_ERS_RESULT_NEED_RESET;
15522
15523         switch (phba->pci_dev_grp) {
15524         case LPFC_PCI_DEV_LP:
15525                 rc = lpfc_io_error_detected_s3(pdev, state);
15526                 break;
15527         case LPFC_PCI_DEV_OC:
15528                 rc = lpfc_io_error_detected_s4(pdev, state);
15529                 break;
15530         default:
15531                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15532                                 "1427 Invalid PCI device group: 0x%x\n",
15533                                 phba->pci_dev_grp);
15534                 break;
15535         }
15536         return rc;
15537 }
15538
15539 /**
15540  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
15541  * @pdev: pointer to PCI device.
15542  *
15543  * This routine is registered to the PCI subsystem for error handling. This
15544  * function is called after PCI bus has been reset to restart the PCI card
15545  * from scratch, as if from a cold-boot. When this routine is invoked, it
15546  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
15547  * routine, which will perform the proper device reset.
15548  *
15549  * Return codes
15550  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
15551  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15552  **/
15553 static pci_ers_result_t
15554 lpfc_io_slot_reset(struct pci_dev *pdev)
15555 {
15556         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15557         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15558         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
15559
15560         switch (phba->pci_dev_grp) {
15561         case LPFC_PCI_DEV_LP:
15562                 rc = lpfc_io_slot_reset_s3(pdev);
15563                 break;
15564         case LPFC_PCI_DEV_OC:
15565                 rc = lpfc_io_slot_reset_s4(pdev);
15566                 break;
15567         default:
15568                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15569                                 "1428 Invalid PCI device group: 0x%x\n",
15570                                 phba->pci_dev_grp);
15571                 break;
15572         }
15573         return rc;
15574 }
15575
15576 /**
15577  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
15578  * @pdev: pointer to PCI device
15579  *
15580  * This routine is registered to the PCI subsystem for error handling. It
15581  * is called when kernel error recovery tells the lpfc driver that it is
15582  * OK to resume normal PCI operation after PCI bus error recovery. When
15583  * this routine is invoked, it dispatches the action to the proper SLI-3
15584  * or SLI-4 device io_resume routine, which will resume the device operation.
15585  **/
15586 static void
15587 lpfc_io_resume(struct pci_dev *pdev)
15588 {
15589         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15590         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15591
15592         switch (phba->pci_dev_grp) {
15593         case LPFC_PCI_DEV_LP:
15594                 lpfc_io_resume_s3(pdev);
15595                 break;
15596         case LPFC_PCI_DEV_OC:
15597                 lpfc_io_resume_s4(pdev);
15598                 break;
15599         default:
15600                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15601                                 "1429 Invalid PCI device group: 0x%x\n",
15602                                 phba->pci_dev_grp);
15603                 break;
15604         }
15605         return;
15606 }
15607
15608 /**
15609  * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter
15610  * @phba: pointer to lpfc hba data structure.
15611  *
15612  * This routine checks to see if OAS is supported for this adapter. If
15613  * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,
15614  * the enable oas flag is cleared and the pool created for OAS device data
15615  * is destroyed.
15616  *
15617  **/
15618 static void
15619 lpfc_sli4_oas_verify(struct lpfc_hba *phba)
15620 {
15621
15622         if (!phba->cfg_EnableXLane)
15623                 return;
15624
15625         if (phba->sli4_hba.pc_sli4_params.oas_supported) {
15626                 phba->cfg_fof = 1;
15627         } else {
15628                 phba->cfg_fof = 0;
15629                 mempool_destroy(phba->device_data_mem_pool);
15630                 phba->device_data_mem_pool = NULL;
15631         }
15632
15633         return;
15634 }
15635
15636 /**
15637  * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter
15638  * @phba: pointer to lpfc hba data structure.
15639  *
15640  * This routine checks to see if RAS is supported by the adapter. Check the
15641  * function through which RAS support enablement is to be done.
15642  **/
15643 void
15644 lpfc_sli4_ras_init(struct lpfc_hba *phba)
15645 {
15646         /* if ASIC_GEN_NUM >= 0xC) */
15647         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
15648                     LPFC_SLI_INTF_IF_TYPE_6) ||
15649             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
15650                     LPFC_SLI_INTF_FAMILY_G6)) {
15651                 phba->ras_fwlog.ras_hwsupport = true;
15652                 if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
15653                     phba->cfg_ras_fwlog_buffsize)
15654                         phba->ras_fwlog.ras_enabled = true;
15655                 else
15656                         phba->ras_fwlog.ras_enabled = false;
15657         } else {
15658                 phba->ras_fwlog.ras_hwsupport = false;
15659         }
15660 }
15661
15662
15663 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
15664
15665 static const struct pci_error_handlers lpfc_err_handler = {
15666         .error_detected = lpfc_io_error_detected,
15667         .slot_reset = lpfc_io_slot_reset,
15668         .resume = lpfc_io_resume,
15669 };
15670
15671 static SIMPLE_DEV_PM_OPS(lpfc_pci_pm_ops_one,
15672                          lpfc_pci_suspend_one,
15673                          lpfc_pci_resume_one);
15674
15675 static struct pci_driver lpfc_driver = {
15676         .name           = LPFC_DRIVER_NAME,
15677         .id_table       = lpfc_id_table,
15678         .probe          = lpfc_pci_probe_one,
15679         .remove         = lpfc_pci_remove_one,
15680         .shutdown       = lpfc_pci_remove_one,
15681         .driver.pm      = &lpfc_pci_pm_ops_one,
15682         .err_handler    = &lpfc_err_handler,
15683 };
15684
15685 static const struct file_operations lpfc_mgmt_fop = {
15686         .owner = THIS_MODULE,
15687 };
15688
15689 static struct miscdevice lpfc_mgmt_dev = {
15690         .minor = MISC_DYNAMIC_MINOR,
15691         .name = "lpfcmgmt",
15692         .fops = &lpfc_mgmt_fop,
15693 };
15694
15695 /**
15696  * lpfc_init - lpfc module initialization routine
15697  *
15698  * This routine is to be invoked when the lpfc module is loaded into the
15699  * kernel. The special kernel macro module_init() is used to indicate the
15700  * role of this routine to the kernel as lpfc module entry point.
15701  *
15702  * Return codes
15703  *   0 - successful
15704  *   -ENOMEM - FC attach transport failed
15705  *   all others - failed
15706  */
15707 static int __init
15708 lpfc_init(void)
15709 {
15710         int error = 0;
15711
15712         pr_info(LPFC_MODULE_DESC "\n");
15713         pr_info(LPFC_COPYRIGHT "\n");
15714
15715         error = misc_register(&lpfc_mgmt_dev);
15716         if (error)
15717                 printk(KERN_ERR "Could not register lpfcmgmt device, "
15718                         "misc_register returned with status %d", error);
15719
15720         error = -ENOMEM;
15721         lpfc_transport_functions.vport_create = lpfc_vport_create;
15722         lpfc_transport_functions.vport_delete = lpfc_vport_delete;
15723         lpfc_transport_template =
15724                                 fc_attach_transport(&lpfc_transport_functions);
15725         if (lpfc_transport_template == NULL)
15726                 goto unregister;
15727         lpfc_vport_transport_template =
15728                 fc_attach_transport(&lpfc_vport_transport_functions);
15729         if (lpfc_vport_transport_template == NULL) {
15730                 fc_release_transport(lpfc_transport_template);
15731                 goto unregister;
15732         }
15733         lpfc_wqe_cmd_template();
15734         lpfc_nvmet_cmd_template();
15735
15736         /* Initialize in case vector mapping is needed */
15737         lpfc_present_cpu = num_present_cpus();
15738
15739         lpfc_pldv_detect = false;
15740
15741         error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
15742                                         "lpfc/sli4:online",
15743                                         lpfc_cpu_online, lpfc_cpu_offline);
15744         if (error < 0)
15745                 goto cpuhp_failure;
15746         lpfc_cpuhp_state = error;
15747
15748         error = pci_register_driver(&lpfc_driver);
15749         if (error)
15750                 goto unwind;
15751
15752         return error;
15753
15754 unwind:
15755         cpuhp_remove_multi_state(lpfc_cpuhp_state);
15756 cpuhp_failure:
15757         fc_release_transport(lpfc_transport_template);
15758         fc_release_transport(lpfc_vport_transport_template);
15759 unregister:
15760         misc_deregister(&lpfc_mgmt_dev);
15761
15762         return error;
15763 }
15764
15765 void lpfc_dmp_dbg(struct lpfc_hba *phba)
15766 {
15767         unsigned int start_idx;
15768         unsigned int dbg_cnt;
15769         unsigned int temp_idx;
15770         int i;
15771         int j = 0;
15772         unsigned long rem_nsec;
15773
15774         if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0)
15775                 return;
15776
15777         start_idx = (unsigned int)atomic_read(&phba->dbg_log_idx) % DBG_LOG_SZ;
15778         dbg_cnt = (unsigned int)atomic_read(&phba->dbg_log_cnt);
15779         if (!dbg_cnt)
15780                 goto out;
15781         temp_idx = start_idx;
15782         if (dbg_cnt >= DBG_LOG_SZ) {
15783                 dbg_cnt = DBG_LOG_SZ;
15784                 temp_idx -= 1;
15785         } else {
15786                 if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {
15787                         temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;
15788                 } else {
15789                         if (start_idx < dbg_cnt)
15790                                 start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);
15791                         else
15792                                 start_idx -= dbg_cnt;
15793                 }
15794         }
15795         dev_info(&phba->pcidev->dev, "start %d end %d cnt %d\n",
15796                  start_idx, temp_idx, dbg_cnt);
15797
15798         for (i = 0; i < dbg_cnt; i++) {
15799                 if ((start_idx + i) < DBG_LOG_SZ)
15800                         temp_idx = (start_idx + i) % DBG_LOG_SZ;
15801                 else
15802                         temp_idx = j++;
15803                 rem_nsec = do_div(phba->dbg_log[temp_idx].t_ns, NSEC_PER_SEC);
15804                 dev_info(&phba->pcidev->dev, "%d: [%5lu.%06lu] %s",
15805                          temp_idx,
15806                          (unsigned long)phba->dbg_log[temp_idx].t_ns,
15807                          rem_nsec / 1000,
15808                          phba->dbg_log[temp_idx].log);
15809         }
15810 out:
15811         atomic_set(&phba->dbg_log_cnt, 0);
15812         atomic_set(&phba->dbg_log_dmping, 0);
15813 }
15814
15815 __printf(2, 3)
15816 void lpfc_dbg_print(struct lpfc_hba *phba, const char *fmt, ...)
15817 {
15818         unsigned int idx;
15819         va_list args;
15820         int dbg_dmping = atomic_read(&phba->dbg_log_dmping);
15821         struct va_format vaf;
15822
15823
15824         va_start(args, fmt);
15825         if (unlikely(dbg_dmping)) {
15826                 vaf.fmt = fmt;
15827                 vaf.va = &args;
15828                 dev_info(&phba->pcidev->dev, "%pV", &vaf);
15829                 va_end(args);
15830                 return;
15831         }
15832         idx = (unsigned int)atomic_fetch_add(1, &phba->dbg_log_idx) %
15833                 DBG_LOG_SZ;
15834
15835         atomic_inc(&phba->dbg_log_cnt);
15836
15837         vscnprintf(phba->dbg_log[idx].log,
15838                    sizeof(phba->dbg_log[idx].log), fmt, args);
15839         va_end(args);
15840
15841         phba->dbg_log[idx].t_ns = local_clock();
15842 }
15843
15844 /**
15845  * lpfc_exit - lpfc module removal routine
15846  *
15847  * This routine is invoked when the lpfc module is removed from the kernel.
15848  * The special kernel macro module_exit() is used to indicate the role of
15849  * this routine to the kernel as lpfc module exit point.
15850  */
15851 static void __exit
15852 lpfc_exit(void)
15853 {
15854         misc_deregister(&lpfc_mgmt_dev);
15855         pci_unregister_driver(&lpfc_driver);
15856         cpuhp_remove_multi_state(lpfc_cpuhp_state);
15857         fc_release_transport(lpfc_transport_template);
15858         fc_release_transport(lpfc_vport_transport_template);
15859         idr_destroy(&lpfc_hba_index);
15860 }
15861
15862 module_init(lpfc_init);
15863 module_exit(lpfc_exit);
15864 MODULE_LICENSE("GPL");
15865 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
15866 MODULE_AUTHOR("Broadcom");
15867 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);