drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_target.h"
   9
  10 #include <linux/delay.h>
  11 #include <linux/slab.h>
  12 #include <linux/cpu.h>
  13 #include <linux/t10-pi.h>
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsi_bsg_fc.h>
  16 #include <scsi/scsi_eh.h>
  17 #include <scsi/fc/fc_fs.h>
  18 #include <linux/nvme-fc-driver.h>
  19
  20 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  21 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  22 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  23 static int qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  24         sts_entry_t *);
  25
  26 const char *const port_state_str[] = {
  27         "Unknown",
  28         "UNCONFIGURED",
  29         "DEAD",
  30         "LOST",
  31         "ONLINE"
  32 };
  33
  34 /**
  35  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  36  * @irq: interrupt number
  37  * @dev_id: SCSI driver HA context
  38  *
  39  * Called by system whenever the host adapter generates an interrupt.
  40  *
  41  * Returns handled flag.
  42  */
  43 irqreturn_t
  44 qla2100_intr_handler(int irq, void *dev_id)
  45 {
  46         scsi_qla_host_t *vha;
  47         struct qla_hw_data *ha;
  48         struct device_reg_2xxx __iomem *reg;
  49         int             status;
  50         unsigned long   iter;
  51         uint16_t        hccr;
  52         uint16_t        mb[8];
  53         struct rsp_que *rsp;
  54         unsigned long   flags;
  55
  56         rsp = (struct rsp_que *) dev_id;
  57         if (!rsp) {
  58                 ql_log(ql_log_info, NULL, 0x505d,
  59                     "%s: NULL response queue pointer.\n", __func__);
  60                 return (IRQ_NONE);
  61         }
  62
  63         ha = rsp->hw;
  64         reg = &ha->iobase->isp;
  65         status = 0;
  66
  67         spin_lock_irqsave(&ha->hardware_lock, flags);
  68         vha = pci_get_drvdata(ha->pdev);
  69         for (iter = 50; iter--; ) {
  70                 hccr = RD_REG_WORD(&reg->hccr);
  71                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  72                         break;
  73                 if (hccr & HCCR_RISC_PAUSE) {
  74                         if (pci_channel_offline(ha->pdev))
  75                                 break;
  76
  77                         /*
  78                          * Issue a "HARD" reset in order for the RISC interrupt
  79                          * bit to be cleared.  Schedule a big hammer to get
  80                          * out of the RISC PAUSED state.
  81                          */
  82                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  83                         RD_REG_WORD(&reg->hccr);
  84
  85                         ha->isp_ops->fw_dump(vha, 1);
  86                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  87                         break;
  88                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  89                         break;
  90
  91                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  92                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  93                         RD_REG_WORD(&reg->hccr);
  94
  95                         /* Get mailbox data. */
  96                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  97                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  98                                 qla2x00_mbx_completion(vha, mb[0]);
  99                                 status |= MBX_INTERRUPT;
 100                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
 101                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 102                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 103                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 104                                 qla2x00_async_event(vha, rsp, mb);
 105                         } else {
 106                                 /*EMPTY*/
 107                                 ql_dbg(ql_dbg_async, vha, 0x5025,
 108                                     "Unrecognized interrupt type (%d).\n",
 109                                     mb[0]);
 110                         }
 111                         /* Release mailbox registers. */
 112                         WRT_REG_WORD(&reg->semaphore, 0);
 113                         RD_REG_WORD(&reg->semaphore);
 114                 } else {
 115                         qla2x00_process_response_queue(rsp);
 116
 117                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 118                         RD_REG_WORD(&reg->hccr);
 119                 }
 120         }
 121         qla2x00_handle_mbx_completion(ha, status);
 122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 123
 124         return (IRQ_HANDLED);
 125 }
 126
 127 bool
 128 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 129 {
 130         /* Check for PCI disconnection */
 131         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 132                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 133                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 134                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 135                         /*
 136                          * Schedule this (only once) on the default system
 137                          * workqueue so that all the adapter workqueues and the
 138                          * DPC thread can be shutdown cleanly.
 139                          */
 140                         schedule_work(&vha->hw->board_disable);
 141                 }
 142                 return true;
 143         } else
 144                 return false;
 145 }
 146
 147 bool
 148 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 149 {
 150         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 151 }
 152
 153 /**
 154  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 155  * @irq: interrupt number
 156  * @dev_id: SCSI driver HA context
 157  *
 158  * Called by system whenever the host adapter generates an interrupt.
 159  *
 160  * Returns handled flag.
 161  */
 162 irqreturn_t
 163 qla2300_intr_handler(int irq, void *dev_id)
 164 {
 165         scsi_qla_host_t *vha;
 166         struct device_reg_2xxx __iomem *reg;
 167         int             status;
 168         unsigned long   iter;
 169         uint32_t        stat;
 170         uint16_t        hccr;
 171         uint16_t        mb[8];
 172         struct rsp_que *rsp;
 173         struct qla_hw_data *ha;
 174         unsigned long   flags;
 175
 176         rsp = (struct rsp_que *) dev_id;
 177         if (!rsp) {
 178                 ql_log(ql_log_info, NULL, 0x5058,
 179                     "%s: NULL response queue pointer.\n", __func__);
 180                 return (IRQ_NONE);
 181         }
 182
 183         ha = rsp->hw;
 184         reg = &ha->iobase->isp;
 185         status = 0;
 186
 187         spin_lock_irqsave(&ha->hardware_lock, flags);
 188         vha = pci_get_drvdata(ha->pdev);
 189         for (iter = 50; iter--; ) {
 190                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 191                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 192                         break;
 193                 if (stat & HSR_RISC_PAUSED) {
 194                         if (unlikely(pci_channel_offline(ha->pdev)))
 195                                 break;
 196
 197                         hccr = RD_REG_WORD(&reg->hccr);
 198
 199                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 200                                 ql_log(ql_log_warn, vha, 0x5026,
 201                                     "Parity error -- HCCR=%x, Dumping "
 202                                     "firmware.\n", hccr);
 203                         else
 204                                 ql_log(ql_log_warn, vha, 0x5027,
 205                                     "RISC paused -- HCCR=%x, Dumping "
 206                                     "firmware.\n", hccr);
 207
 208                         /*
 209                          * Issue a "HARD" reset in order for the RISC
 210                          * interrupt bit to be cleared.  Schedule a big
 211                          * hammer to get out of the RISC PAUSED state.
 212                          */
 213                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 214                         RD_REG_WORD(&reg->hccr);
 215
 216                         ha->isp_ops->fw_dump(vha, 1);
 217                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 218                         break;
 219                 } else if ((stat & HSR_RISC_INT) == 0)
 220                         break;
 221
 222                 switch (stat & 0xff) {
 223                 case 0x1:
 224                 case 0x2:
 225                 case 0x10:
 226                 case 0x11:
 227                         qla2x00_mbx_completion(vha, MSW(stat));
 228                         status |= MBX_INTERRUPT;
 229
 230                         /* Release mailbox registers. */
 231                         WRT_REG_WORD(&reg->semaphore, 0);
 232                         break;
 233                 case 0x12:
 234                         mb[0] = MSW(stat);
 235                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 236                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 237                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 238                         qla2x00_async_event(vha, rsp, mb);
 239                         break;
 240                 case 0x13:
 241                         qla2x00_process_response_queue(rsp);
 242                         break;
 243                 case 0x15:
 244                         mb[0] = MBA_CMPLT_1_16BIT;
 245                         mb[1] = MSW(stat);
 246                         qla2x00_async_event(vha, rsp, mb);
 247                         break;
 248                 case 0x16:
 249                         mb[0] = MBA_SCSI_COMPLETION;
 250                         mb[1] = MSW(stat);
 251                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 252                         qla2x00_async_event(vha, rsp, mb);
 253                         break;
 254                 default:
 255                         ql_dbg(ql_dbg_async, vha, 0x5028,
 256                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 257                         break;
 258                 }
 259                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 260                 RD_REG_WORD_RELAXED(&reg->hccr);
 261         }
 262         qla2x00_handle_mbx_completion(ha, status);
 263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 264
 265         return (IRQ_HANDLED);
 266 }
 267
 268 /**
 269  * qla2x00_mbx_completion() - Process mailbox command completions.
 270  * @vha: SCSI driver HA context
 271  * @mb0: Mailbox0 register
 272  */
 273 static void
 274 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 275 {
 276         uint16_t        cnt;
 277         uint32_t        mboxes;
 278         uint16_t __iomem *wptr;
 279         struct qla_hw_data *ha = vha->hw;
 280         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 281
 282         /* Read all mbox registers? */
 283         WARN_ON_ONCE(ha->mbx_count > 32);
 284         mboxes = (1ULL << ha->mbx_count) - 1;
 285         if (!ha->mcp)
 286                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 287         else
 288                 mboxes = ha->mcp->in_mb;
 289
 290         /* Load return mailbox registers. */
 291         ha->flags.mbox_int = 1;
 292         ha->mailbox_out[0] = mb0;
 293         mboxes >>= 1;
 294         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 295
 296         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 297                 if (IS_QLA2200(ha) && cnt == 8)
 298                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 299                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 300                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 301                 else if (mboxes & BIT_0)
 302                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 303
 304                 wptr++;
 305                 mboxes >>= 1;
 306         }
 307 }
 308
 309 static void
 310 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 311 {
 312         static char *event[] =
 313                 { "Complete", "Request Notification", "Time Extension" };
 314         int rval;
 315         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 316         struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
 317         uint16_t __iomem *wptr;
 318         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 319
 320         /* Seed data -- mailbox1 -> mailbox7. */
 321         if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
 322                 wptr = (uint16_t __iomem *)&reg24->mailbox1;
 323         else if (IS_QLA8044(vha->hw))
 324                 wptr = (uint16_t __iomem *)&reg82->mailbox_out[1];
 325         else
 326                 return;
 327
 328         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 329                 mb[cnt] = RD_REG_WORD(wptr);
 330
 331         ql_dbg(ql_dbg_async, vha, 0x5021,
 332             "Inter-Driver Communication %s -- "
 333             "%04x %04x %04x %04x %04x %04x %04x.\n",
 334             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 335             mb[4], mb[5], mb[6]);
 336         switch (aen) {
 337         /* Handle IDC Error completion case. */
 338         case MBA_IDC_COMPLETE:
 339                 if (mb[1] >> 15) {
 340                         vha->hw->flags.idc_compl_status = 1;
 341                         if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
 342                                 complete(&vha->hw->dcbx_comp);
 343                 }
 344                 break;
 345
 346         case MBA_IDC_NOTIFY:
 347                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 348                 timeout = (descr >> 8) & 0xf;
 349                 ql_dbg(ql_dbg_async, vha, 0x5022,
 350                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 351                     vha->host_no, event[aen & 0xff], timeout);
 352
 353                 if (!timeout)
 354                         return;
 355                 rval = qla2x00_post_idc_ack_work(vha, mb);
 356                 if (rval != QLA_SUCCESS)
 357                         ql_log(ql_log_warn, vha, 0x5023,
 358                             "IDC failed to post ACK.\n");
 359                 break;
 360         case MBA_IDC_TIME_EXT:
 361                 vha->hw->idc_extend_tmo = descr;
 362                 ql_dbg(ql_dbg_async, vha, 0x5087,
 363                     "%lu Inter-Driver Communication %s -- "
 364                     "Extend timeout by=%d.\n",
 365                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 366                 break;
 367         }
 368 }
 369
 370 #define LS_UNKNOWN      2
 371 const char *
 372 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 373 {
 374         static const char *const link_speeds[] = {
 375                 "1", "2", "?", "4", "8", "16", "32", "10"
 376         };
 377 #define QLA_LAST_SPEED (ARRAY_SIZE(link_speeds) - 1)
 378
 379         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 380                 return link_speeds[0];
 381         else if (speed == 0x13)
 382                 return link_speeds[QLA_LAST_SPEED];
 383         else if (speed < QLA_LAST_SPEED)
 384                 return link_speeds[speed];
 385         else
 386                 return link_speeds[LS_UNKNOWN];
 387 }
 388
 389 static void
 390 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 391 {
 392         struct qla_hw_data *ha = vha->hw;
 393
 394         /*
 395          * 8200 AEN Interpretation:
 396          * mb[0] = AEN code
 397          * mb[1] = AEN Reason code
 398          * mb[2] = LSW of Peg-Halt Status-1 Register
 399          * mb[6] = MSW of Peg-Halt Status-1 Register
 400          * mb[3] = LSW of Peg-Halt Status-2 register
 401          * mb[7] = MSW of Peg-Halt Status-2 register
 402          * mb[4] = IDC Device-State Register value
 403          * mb[5] = IDC Driver-Presence Register value
 404          */
 405         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 406             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 407             mb[0], mb[1], mb[2], mb[6]);
 408         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 409             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 410             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 411
 412         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 413                                 IDC_HEARTBEAT_FAILURE)) {
 414                 ha->flags.nic_core_hung = 1;
 415                 ql_log(ql_log_warn, vha, 0x5060,
 416                     "83XX: F/W Error Reported: Check if reset required.\n");
 417
 418                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 419                         uint32_t protocol_engine_id, fw_err_code, err_level;
 420
 421                         /*
 422                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 423                          *  - PEG-Halt Status-1 Register:
 424                          *      (LSW = mb[2], MSW = mb[6])
 425                          *      Bits 0-7   = protocol-engine ID
 426                          *      Bits 8-28  = f/w error code
 427                          *      Bits 29-31 = Error-level
 428                          *          Error-level 0x1 = Non-Fatal error
 429                          *          Error-level 0x2 = Recoverable Fatal error
 430                          *          Error-level 0x4 = UnRecoverable Fatal error
 431                          *  - PEG-Halt Status-2 Register:
 432                          *      (LSW = mb[3], MSW = mb[7])
 433                          */
 434                         protocol_engine_id = (mb[2] & 0xff);
 435                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 436                             ((mb[6] & 0x1fff) << 8));
 437                         err_level = ((mb[6] & 0xe000) >> 13);
 438                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 439                             "Register: protocol_engine_id=0x%x "
 440                             "fw_err_code=0x%x err_level=0x%x.\n",
 441                             protocol_engine_id, fw_err_code, err_level);
 442                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 443                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 444                         if (err_level == ERR_LEVEL_NON_FATAL) {
 445                                 ql_log(ql_log_warn, vha, 0x5063,
 446                                     "Not a fatal error, f/w has recovered itself.\n");
 447                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 448                                 ql_log(ql_log_fatal, vha, 0x5064,
 449                                     "Recoverable Fatal error: Chip reset "
 450                                     "required.\n");
 451                                 qla83xx_schedule_work(vha,
 452                                     QLA83XX_NIC_CORE_RESET);
 453                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 454                                 ql_log(ql_log_fatal, vha, 0x5065,
 455                                     "Unrecoverable Fatal error: Set FAILED "
 456                                     "state, reboot required.\n");
 457                                 qla83xx_schedule_work(vha,
 458                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 459                         }
 460                 }
 461
 462                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 463                         uint16_t peg_fw_state, nw_interface_link_up;
 464                         uint16_t nw_interface_signal_detect, sfp_status;
 465                         uint16_t htbt_counter, htbt_monitor_enable;
 466                         uint16_t sfp_additional_info, sfp_multirate;
 467                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 468
 469                         /*
 470                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 471                          *  - PEG-to-FC Status Register:
 472                          *      (LSW = mb[2], MSW = mb[6])
 473                          *      Bits 0-7   = Peg-Firmware state
 474                          *      Bit 8      = N/W Interface Link-up
 475                          *      Bit 9      = N/W Interface signal detected
 476                          *      Bits 10-11 = SFP Status
 477                          *        SFP Status 0x0 = SFP+ transceiver not expected
 478                          *        SFP Status 0x1 = SFP+ transceiver not present
 479                          *        SFP Status 0x2 = SFP+ transceiver invalid
 480                          *        SFP Status 0x3 = SFP+ transceiver present and
 481                          *        valid
 482                          *      Bits 12-14 = Heartbeat Counter
 483                          *      Bit 15     = Heartbeat Monitor Enable
 484                          *      Bits 16-17 = SFP Additional Info
 485                          *        SFP info 0x0 = Unregocnized transceiver for
 486                          *        Ethernet
 487                          *        SFP info 0x1 = SFP+ brand validation failed
 488                          *        SFP info 0x2 = SFP+ speed validation failed
 489                          *        SFP info 0x3 = SFP+ access error
 490                          *      Bit 18     = SFP Multirate
 491                          *      Bit 19     = SFP Tx Fault
 492                          *      Bits 20-22 = Link Speed
 493                          *      Bits 23-27 = Reserved
 494                          *      Bits 28-30 = DCBX Status
 495                          *        DCBX Status 0x0 = DCBX Disabled
 496                          *        DCBX Status 0x1 = DCBX Enabled
 497                          *        DCBX Status 0x2 = DCBX Exchange error
 498                          *      Bit 31     = Reserved
 499                          */
 500                         peg_fw_state = (mb[2] & 0x00ff);
 501                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 502                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 503                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 504                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 505                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 506                         sfp_additional_info = (mb[6] & 0x0003);
 507                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 508                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 509                         link_speed = ((mb[6] & 0x0070) >> 4);
 510                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 511
 512                         ql_log(ql_log_warn, vha, 0x5066,
 513                             "Peg-to-Fc Status Register:\n"
 514                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 515                             "nw_interface_signal_detect=0x%x"
 516                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 517                             nw_interface_link_up, nw_interface_signal_detect,
 518                             sfp_status);
 519                         ql_log(ql_log_warn, vha, 0x5067,
 520                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 521                             "sfp_additional_info=0x%x, sfp_multirate=0x%x.\n ",
 522                             htbt_counter, htbt_monitor_enable,
 523                             sfp_additional_info, sfp_multirate);
 524                         ql_log(ql_log_warn, vha, 0x5068,
 525                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 526                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 527                             dcbx_status);
 528
 529                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 530                 }
 531
 532                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 533                         ql_log(ql_log_warn, vha, 0x5069,
 534                             "Heartbeat Failure encountered, chip reset "
 535                             "required.\n");
 536
 537                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 538                 }
 539         }
 540
 541         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 542                 ql_log(ql_log_info, vha, 0x506a,
 543                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 544                 if (ha->flags.nic_core_reset_owner)
 545                         return;
 546                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 547         }
 548 }
 549
 550 int
 551 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 552 {
 553         struct qla_hw_data *ha = vha->hw;
 554         scsi_qla_host_t *vp;
 555         uint32_t vp_did;
 556         unsigned long flags;
 557         int ret = 0;
 558
 559         if (!ha->num_vhosts)
 560                 return ret;
 561
 562         spin_lock_irqsave(&ha->vport_slock, flags);
 563         list_for_each_entry(vp, &ha->vp_list, list) {
 564                 vp_did = vp->d_id.b24;
 565                 if (vp_did == rscn_entry) {
 566                         ret = 1;
 567                         break;
 568                 }
 569         }
 570         spin_unlock_irqrestore(&ha->vport_slock, flags);
 571
 572         return ret;
 573 }
 574
 575 fc_port_t *
 576 qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
 577 {
 578         fc_port_t *f, *tf;
 579
 580         f = tf = NULL;
 581         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list)
 582                 if (f->loop_id == loop_id)
 583                         return f;
 584         return NULL;
 585 }
 586
 587 fc_port_t *
 588 qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *vha, u8 *wwpn, u8 incl_deleted)
 589 {
 590         fc_port_t *f, *tf;
 591
 592         f = tf = NULL;
 593         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 594                 if (memcmp(f->port_name, wwpn, WWN_SIZE) == 0) {
 595                         if (incl_deleted)
 596                                 return f;
 597                         else if (f->deleted == 0)
 598                                 return f;
 599                 }
 600         }
 601         return NULL;
 602 }
 603
 604 fc_port_t *
 605 qla2x00_find_fcport_by_nportid(scsi_qla_host_t *vha, port_id_t *id,
 606         u8 incl_deleted)
 607 {
 608         fc_port_t *f, *tf;
 609
 610         f = tf = NULL;
 611         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 612                 if (f->d_id.b24 == id->b24) {
 613                         if (incl_deleted)
 614                                 return f;
 615                         else if (f->deleted == 0)
 616                                 return f;
 617                 }
 618         }
 619         return NULL;
 620 }
 621
 622 /**
 623  * qla2x00_async_event() - Process aynchronous events.
 624  * @vha: SCSI driver HA context
 625  * @rsp: response queue
 626  * @mb: Mailbox registers (0 - 3)
 627  */
 628 void
 629 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 630 {
 631         uint16_t        handle_cnt;
 632         uint16_t        cnt, mbx;
 633         uint32_t        handles[5];
 634         struct qla_hw_data *ha = vha->hw;
 635         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 636         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 637         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 638         uint32_t        rscn_entry, host_pid;
 639         unsigned long   flags;
 640         fc_port_t       *fcport = NULL;
 641
 642         if (!vha->hw->flags.fw_started)
 643                 return;
 644
 645         /* Setup to process RIO completion. */
 646         handle_cnt = 0;
 647         if (IS_CNA_CAPABLE(ha))
 648                 goto skip_rio;
 649         switch (mb[0]) {
 650         case MBA_SCSI_COMPLETION:
 651                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 652                 handle_cnt = 1;
 653                 break;
 654         case MBA_CMPLT_1_16BIT:
 655                 handles[0] = mb[1];
 656                 handle_cnt = 1;
 657                 mb[0] = MBA_SCSI_COMPLETION;
 658                 break;
 659         case MBA_CMPLT_2_16BIT:
 660                 handles[0] = mb[1];
 661                 handles[1] = mb[2];
 662                 handle_cnt = 2;
 663                 mb[0] = MBA_SCSI_COMPLETION;
 664                 break;
 665         case MBA_CMPLT_3_16BIT:
 666                 handles[0] = mb[1];
 667                 handles[1] = mb[2];
 668                 handles[2] = mb[3];
 669                 handle_cnt = 3;
 670                 mb[0] = MBA_SCSI_COMPLETION;
 671                 break;
 672         case MBA_CMPLT_4_16BIT:
 673                 handles[0] = mb[1];
 674                 handles[1] = mb[2];
 675                 handles[2] = mb[3];
 676                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 677                 handle_cnt = 4;
 678                 mb[0] = MBA_SCSI_COMPLETION;
 679                 break;
 680         case MBA_CMPLT_5_16BIT:
 681                 handles[0] = mb[1];
 682                 handles[1] = mb[2];
 683                 handles[2] = mb[3];
 684                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 685                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 686                 handle_cnt = 5;
 687                 mb[0] = MBA_SCSI_COMPLETION;
 688                 break;
 689         case MBA_CMPLT_2_32BIT:
 690                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 691                 handles[1] = le32_to_cpu(
 692                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 693                     RD_MAILBOX_REG(ha, reg, 6));
 694                 handle_cnt = 2;
 695                 mb[0] = MBA_SCSI_COMPLETION;
 696                 break;
 697         default:
 698                 break;
 699         }
 700 skip_rio:
 701         switch (mb[0]) {
 702         case MBA_SCSI_COMPLETION:       /* Fast Post */
 703                 if (!vha->flags.online)
 704                         break;
 705
 706                 for (cnt = 0; cnt < handle_cnt; cnt++)
 707                         qla2x00_process_completed_request(vha, rsp->req,
 708                                 handles[cnt]);
 709                 break;
 710
 711         case MBA_RESET:                 /* Reset */
 712                 ql_dbg(ql_dbg_async, vha, 0x5002,
 713                     "Asynchronous RESET.\n");
 714
 715                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 716                 break;
 717
 718         case MBA_SYSTEM_ERR:            /* System Error */
 719                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
 720                     IS_QLA28XX(ha)) ?
 721                         RD_REG_WORD(&reg24->mailbox7) : 0;
 722                 ql_log(ql_log_warn, vha, 0x5003,
 723                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 724                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 725                 ha->fw_dump_mpi =
 726                     (IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
 727                     RD_REG_WORD(&reg24->mailbox7) & BIT_8;
 728                 ha->isp_ops->fw_dump(vha, 1);
 729                 ha->flags.fw_init_done = 0;
 730                 QLA_FW_STOPPED(ha);
 731
 732                 if (IS_FWI2_CAPABLE(ha)) {
 733                         if (mb[1] == 0 && mb[2] == 0) {
 734                                 ql_log(ql_log_fatal, vha, 0x5004,
 735                                     "Unrecoverable Hardware Error: adapter "
 736                                     "marked OFFLINE!\n");
 737                                 vha->flags.online = 0;
 738                                 vha->device_flags |= DFLG_DEV_FAILED;
 739                         } else {
 740                                 /* Check to see if MPI timeout occurred */
 741                                 if ((mbx & MBX_3) && (ha->port_no == 0))
 742                                         set_bit(MPI_RESET_NEEDED,
 743                                             &vha->dpc_flags);
 744
 745                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 746                         }
 747                 } else if (mb[1] == 0) {
 748                         ql_log(ql_log_fatal, vha, 0x5005,
 749                             "Unrecoverable Hardware Error: adapter marked "
 750                             "OFFLINE!\n");
 751                         vha->flags.online = 0;
 752                         vha->device_flags |= DFLG_DEV_FAILED;
 753                 } else
 754                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 755                 break;
 756
 757         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 758                 ql_log(ql_log_warn, vha, 0x5006,
 759                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 760
 761                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 762                 break;
 763
 764         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 765                 ql_log(ql_log_warn, vha, 0x5007,
 766                     "ISP Response Transfer Error (%x).\n", mb[1]);
 767
 768                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 769                 break;
 770
 771         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 772                 ql_dbg(ql_dbg_async, vha, 0x5008,
 773                     "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
 774                 break;
 775
 776         case MBA_LOOP_INIT_ERR:
 777                 ql_log(ql_log_warn, vha, 0x5090,
 778                     "LOOP INIT ERROR (%x).\n", mb[1]);
 779                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 780                 break;
 781
 782         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 783                 ha->flags.lip_ae = 1;
 784
 785                 ql_dbg(ql_dbg_async, vha, 0x5009,
 786                     "LIP occurred (%x).\n", mb[1]);
 787
 788                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 789                         atomic_set(&vha->loop_state, LOOP_DOWN);
 790                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 791                         qla2x00_mark_all_devices_lost(vha, 1);
 792                 }
 793
 794                 if (vha->vp_idx) {
 795                         atomic_set(&vha->vp_state, VP_FAILED);
 796                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 797                 }
 798
 799                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 800                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 801
 802                 vha->flags.management_server_logged_in = 0;
 803                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 804                 break;
 805
 806         case MBA_LOOP_UP:               /* Loop Up Event */
 807                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 808                         ha->link_data_rate = PORT_SPEED_1GB;
 809                 else
 810                         ha->link_data_rate = mb[1];
 811
 812                 ql_log(ql_log_info, vha, 0x500a,
 813                     "LOOP UP detected (%s Gbps).\n",
 814                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 815
 816                 vha->flags.management_server_logged_in = 0;
 817                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 818
 819                 if (AUTO_DETECT_SFP_SUPPORT(vha)) {
 820                         set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
 821                         qla2xxx_wake_dpc(vha);
 822                 }
 823                 break;
 824
 825         case MBA_LOOP_DOWN:             /* Loop Down Event */
 826                 SAVE_TOPO(ha);
 827                 ha->flags.lip_ae = 0;
 828                 ha->current_topology = 0;
 829
 830                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 831                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 832                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 833                         : mbx;
 834                 ql_log(ql_log_info, vha, 0x500b,
 835                     "LOOP DOWN detected (%x %x %x %x).\n",
 836                     mb[1], mb[2], mb[3], mbx);
 837
 838                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 839                         atomic_set(&vha->loop_state, LOOP_DOWN);
 840                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 841                         /*
 842                          * In case of loop down, restore WWPN from
 843                          * NVRAM in case of FA-WWPN capable ISP
 844                          * Restore for Physical Port only
 845                          */
 846                         if (!vha->vp_idx) {
 847                                 if (ha->flags.fawwpn_enabled &&
 848                                     (ha->current_topology == ISP_CFG_F)) {
 849                                         void *wwpn = ha->init_cb->port_name;
 850
 851                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 852                                         fc_host_port_name(vha->host) =
 853                                             wwn_to_u64(vha->port_name);
 854                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 855                                             vha, 0x00d8, "LOOP DOWN detected,"
 856                                             "restore WWPN %016llx\n",
 857                                             wwn_to_u64(vha->port_name));
 858                                 }
 859
 860                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 861                         }
 862
 863                         vha->device_flags |= DFLG_NO_CABLE;
 864                         qla2x00_mark_all_devices_lost(vha, 1);
 865                 }
 866
 867                 if (vha->vp_idx) {
 868                         atomic_set(&vha->vp_state, VP_FAILED);
 869                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 870                 }
 871
 872                 vha->flags.management_server_logged_in = 0;
 873                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 874                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 875                 break;
 876
 877         case MBA_LIP_RESET:             /* LIP reset occurred */
 878                 ql_dbg(ql_dbg_async, vha, 0x500c,
 879                     "LIP reset occurred (%x).\n", mb[1]);
 880
 881                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 882                         atomic_set(&vha->loop_state, LOOP_DOWN);
 883                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 884                         qla2x00_mark_all_devices_lost(vha, 1);
 885                 }
 886
 887                 if (vha->vp_idx) {
 888                         atomic_set(&vha->vp_state, VP_FAILED);
 889                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 890                 }
 891
 892                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 893
 894                 ha->operating_mode = LOOP;
 895                 vha->flags.management_server_logged_in = 0;
 896                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 897                 break;
 898
 899         /* case MBA_DCBX_COMPLETE: */
 900         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 901                 ha->flags.lip_ae = 0;
 902
 903                 if (IS_QLA2100(ha))
 904                         break;
 905
 906                 if (IS_CNA_CAPABLE(ha)) {
 907                         ql_dbg(ql_dbg_async, vha, 0x500d,
 908                             "DCBX Completed -- %04x %04x %04x.\n",
 909                             mb[1], mb[2], mb[3]);
 910                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 911                                 complete(&ha->dcbx_comp);
 912
 913                 } else
 914                         ql_dbg(ql_dbg_async, vha, 0x500e,
 915                             "Asynchronous P2P MODE received.\n");
 916
 917                 /*
 918                  * Until there's a transition from loop down to loop up, treat
 919                  * this as loop down only.
 920                  */
 921                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 922                         atomic_set(&vha->loop_state, LOOP_DOWN);
 923                         if (!atomic_read(&vha->loop_down_timer))
 924                                 atomic_set(&vha->loop_down_timer,
 925                                     LOOP_DOWN_TIME);
 926                         if (!N2N_TOPO(ha))
 927                                 qla2x00_mark_all_devices_lost(vha, 1);
 928                 }
 929
 930                 if (vha->vp_idx) {
 931                         atomic_set(&vha->vp_state, VP_FAILED);
 932                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 933                 }
 934
 935                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 936                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 937
 938                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 939                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 940
 941                 vha->flags.management_server_logged_in = 0;
 942                 break;
 943
 944         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 945                 if (IS_QLA2100(ha))
 946                         break;
 947
 948                 ql_dbg(ql_dbg_async, vha, 0x500f,
 949                     "Configuration change detected: value=%x.\n", mb[1]);
 950
 951                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 952                         atomic_set(&vha->loop_state, LOOP_DOWN);
 953                         if (!atomic_read(&vha->loop_down_timer))
 954                                 atomic_set(&vha->loop_down_timer,
 955                                     LOOP_DOWN_TIME);
 956                         qla2x00_mark_all_devices_lost(vha, 1);
 957                 }
 958
 959                 if (vha->vp_idx) {
 960                         atomic_set(&vha->vp_state, VP_FAILED);
 961                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 962                 }
 963
 964                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 965                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 966                 break;
 967
 968         case MBA_PORT_UPDATE:           /* Port database update */
 969                 /*
 970                  * Handle only global and vn-port update events
 971                  *
 972                  * Relevant inputs:
 973                  * mb[1] = N_Port handle of changed port
 974                  * OR 0xffff for global event
 975                  * mb[2] = New login state
 976                  * 7 = Port logged out
 977                  * mb[3] = LSB is vp_idx, 0xff = all vps
 978                  *
 979                  * Skip processing if:
 980                  *       Event is global, vp_idx is NOT all vps,
 981                  *           vp_idx does not match
 982                  *       Event is not global, vp_idx does not match
 983                  */
 984                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 985                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 986                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 987                         break;
 988
 989                 if (mb[2] == 0x7) {
 990                         ql_dbg(ql_dbg_async, vha, 0x5010,
 991                             "Port %s %04x %04x %04x.\n",
 992                             mb[1] == 0xffff ? "unavailable" : "logout",
 993                             mb[1], mb[2], mb[3]);
 994
 995                         if (mb[1] == 0xffff)
 996                                 goto global_port_update;
 997
 998                         if (mb[1] == NPH_SNS_LID(ha)) {
 999                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1000                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1001                                 break;
1002                         }
1003
1004                         /* use handle_cnt for loop id/nport handle */
1005                         if (IS_FWI2_CAPABLE(ha))
1006                                 handle_cnt = NPH_SNS;
1007                         else
1008                                 handle_cnt = SIMPLE_NAME_SERVER;
1009                         if (mb[1] == handle_cnt) {
1010                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1011                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1012                                 break;
1013                         }
1014
1015                         /* Port logout */
1016                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1017                         if (!fcport)
1018                                 break;
1019                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1020                                 break;
1021                         ql_dbg(ql_dbg_async, vha, 0x508a,
1022                             "Marking port lost loopid=%04x portid=%06x.\n",
1023                             fcport->loop_id, fcport->d_id.b24);
1024                         if (qla_ini_mode_enabled(vha)) {
1025                                 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1026                                 fcport->logout_on_delete = 0;
1027                                 qlt_schedule_sess_for_deletion(fcport);
1028                         }
1029                         break;
1030
1031 global_port_update:
1032                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1033                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1034                                 atomic_set(&vha->loop_down_timer,
1035                                     LOOP_DOWN_TIME);
1036                                 vha->device_flags |= DFLG_NO_CABLE;
1037                                 qla2x00_mark_all_devices_lost(vha, 1);
1038                         }
1039
1040                         if (vha->vp_idx) {
1041                                 atomic_set(&vha->vp_state, VP_FAILED);
1042                                 fc_vport_set_state(vha->fc_vport,
1043                                     FC_VPORT_FAILED);
1044                                 qla2x00_mark_all_devices_lost(vha, 1);
1045                         }
1046
1047                         vha->flags.management_server_logged_in = 0;
1048                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1049                         break;
1050                 }
1051
1052                 /*
1053                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1054                  * event etc. earlier indicating loop is down) then process
1055                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1056                  */
1057                 atomic_set(&vha->loop_down_timer, 0);
1058                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1059                         !ha->flags.n2n_ae  &&
1060                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1061                         ql_dbg(ql_dbg_async, vha, 0x5011,
1062                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1063                             mb[1], mb[2], mb[3]);
1064
1065                         qlt_async_event(mb[0], vha, mb);
1066                         break;
1067                 }
1068
1069                 ql_dbg(ql_dbg_async, vha, 0x5012,
1070                     "Port database changed %04x %04x %04x.\n",
1071                     mb[1], mb[2], mb[3]);
1072
1073                 /*
1074                  * Mark all devices as missing so we will login again.
1075                  */
1076                 atomic_set(&vha->loop_state, LOOP_UP);
1077                 vha->scan.scan_retry = 0;
1078
1079                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1080                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1081                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1082
1083                 qlt_async_event(mb[0], vha, mb);
1084                 break;
1085
1086         case MBA_RSCN_UPDATE:           /* State Change Registration */
1087                 /* Check if the Vport has issued a SCR */
1088                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1089                         break;
1090                 /* Only handle SCNs for our Vport index. */
1091                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1092                         break;
1093
1094                 ql_dbg(ql_dbg_async, vha, 0x5013,
1095                     "RSCN database changed -- %04x %04x %04x.\n",
1096                     mb[1], mb[2], mb[3]);
1097
1098                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1099                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1100                                 | vha->d_id.b.al_pa;
1101                 if (rscn_entry == host_pid) {
1102                         ql_dbg(ql_dbg_async, vha, 0x5014,
1103                             "Ignoring RSCN update to local host "
1104                             "port ID (%06x).\n", host_pid);
1105                         break;
1106                 }
1107
1108                 /* Ignore reserved bits from RSCN-payload. */
1109                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1110
1111                 /* Skip RSCNs for virtual ports on the same physical port */
1112                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1113                         break;
1114
1115                 atomic_set(&vha->loop_down_timer, 0);
1116                 vha->flags.management_server_logged_in = 0;
1117                 {
1118                         struct event_arg ea;
1119
1120                         memset(&ea, 0, sizeof(ea));
1121                         ea.event = FCME_RSCN;
1122                         ea.id.b24 = rscn_entry;
1123                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1124                         qla2x00_fcport_event_handler(vha, &ea);
1125                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1126                 }
1127                 break;
1128         /* case MBA_RIO_RESPONSE: */
1129         case MBA_ZIO_RESPONSE:
1130                 ql_dbg(ql_dbg_async, vha, 0x5015,
1131                     "[R|Z]IO update completion.\n");
1132
1133                 if (IS_FWI2_CAPABLE(ha))
1134                         qla24xx_process_response_queue(vha, rsp);
1135                 else
1136                         qla2x00_process_response_queue(rsp);
1137                 break;
1138
1139         case MBA_DISCARD_RND_FRAME:
1140                 ql_dbg(ql_dbg_async, vha, 0x5016,
1141                     "Discard RND Frame -- %04x %04x %04x.\n",
1142                     mb[1], mb[2], mb[3]);
1143                 break;
1144
1145         case MBA_TRACE_NOTIFICATION:
1146                 ql_dbg(ql_dbg_async, vha, 0x5017,
1147                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1148                 break;
1149
1150         case MBA_ISP84XX_ALERT:
1151                 ql_dbg(ql_dbg_async, vha, 0x5018,
1152                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1153                     mb[1], mb[2], mb[3]);
1154
1155                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1156                 switch (mb[1]) {
1157                 case A84_PANIC_RECOVERY:
1158                         ql_log(ql_log_info, vha, 0x5019,
1159                             "Alert 84XX: panic recovery %04x %04x.\n",
1160                             mb[2], mb[3]);
1161                         break;
1162                 case A84_OP_LOGIN_COMPLETE:
1163                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1164                         ql_log(ql_log_info, vha, 0x501a,
1165                             "Alert 84XX: firmware version %x.\n",
1166                             ha->cs84xx->op_fw_version);
1167                         break;
1168                 case A84_DIAG_LOGIN_COMPLETE:
1169                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1170                         ql_log(ql_log_info, vha, 0x501b,
1171                             "Alert 84XX: diagnostic firmware version %x.\n",
1172                             ha->cs84xx->diag_fw_version);
1173                         break;
1174                 case A84_GOLD_LOGIN_COMPLETE:
1175                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1176                         ha->cs84xx->fw_update = 1;
1177                         ql_log(ql_log_info, vha, 0x501c,
1178                             "Alert 84XX: gold firmware version %x.\n",
1179                             ha->cs84xx->gold_fw_version);
1180                         break;
1181                 default:
1182                         ql_log(ql_log_warn, vha, 0x501d,
1183                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1184                             mb[1], mb[2], mb[3]);
1185                 }
1186                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1187                 break;
1188         case MBA_DCBX_START:
1189                 ql_dbg(ql_dbg_async, vha, 0x501e,
1190                     "DCBX Started -- %04x %04x %04x.\n",
1191                     mb[1], mb[2], mb[3]);
1192                 break;
1193         case MBA_DCBX_PARAM_UPDATE:
1194                 ql_dbg(ql_dbg_async, vha, 0x501f,
1195                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1196                     mb[1], mb[2], mb[3]);
1197                 break;
1198         case MBA_FCF_CONF_ERR:
1199                 ql_dbg(ql_dbg_async, vha, 0x5020,
1200                     "FCF Configuration Error -- %04x %04x %04x.\n",
1201                     mb[1], mb[2], mb[3]);
1202                 break;
1203         case MBA_IDC_NOTIFY:
1204                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1205                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1206                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1207                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1208                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1209                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1210                                 /*
1211                                  * Extend loop down timer since port is active.
1212                                  */
1213                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1214                                         atomic_set(&vha->loop_down_timer,
1215                                             LOOP_DOWN_TIME);
1216                                 qla2xxx_wake_dpc(vha);
1217                         }
1218                 }
1219                 /* fall through */
1220         case MBA_IDC_COMPLETE:
1221                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1222                         complete(&ha->lb_portup_comp);
1223                 /* Fallthru */
1224         case MBA_IDC_TIME_EXT:
1225                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1226                     IS_QLA8044(ha))
1227                         qla81xx_idc_event(vha, mb[0], mb[1]);
1228                 break;
1229
1230         case MBA_IDC_AEN:
1231                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1232                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1233                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1234                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1235                 qla83xx_handle_8200_aen(vha, mb);
1236                 break;
1237
1238         case MBA_DPORT_DIAGNOSTICS:
1239                 ql_dbg(ql_dbg_async, vha, 0x5052,
1240                     "D-Port Diagnostics: %04x result=%s\n",
1241                     mb[0],
1242                     mb[1] == 0 ? "start" :
1243                     mb[1] == 1 ? "done (pass)" :
1244                     mb[1] == 2 ? "done (error)" : "other");
1245                 break;
1246
1247         case MBA_TEMPERATURE_ALERT:
1248                 ql_dbg(ql_dbg_async, vha, 0x505e,
1249                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1250                 if (mb[1] == 0x12)
1251                         schedule_work(&ha->board_disable);
1252                 break;
1253
1254         case MBA_TRANS_INSERT:
1255                 ql_dbg(ql_dbg_async, vha, 0x5091,
1256                     "Transceiver Insertion: %04x\n", mb[1]);
1257                 break;
1258
1259         default:
1260                 ql_dbg(ql_dbg_async, vha, 0x5057,
1261                     "Unknown AEN:%04x %04x %04x %04x\n",
1262                     mb[0], mb[1], mb[2], mb[3]);
1263         }
1264
1265         qlt_async_event(mb[0], vha, mb);
1266
1267         if (!vha->vp_idx && ha->num_vhosts)
1268                 qla2x00_alert_all_vps(rsp, mb);
1269 }
1270
1271 /**
1272  * qla2x00_process_completed_request() - Process a Fast Post response.
1273  * @vha: SCSI driver HA context
1274  * @req: request queue
1275  * @index: SRB index
1276  */
1277 void
1278 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1279                                   struct req_que *req, uint32_t index)
1280 {
1281         srb_t *sp;
1282         struct qla_hw_data *ha = vha->hw;
1283
1284         /* Validate handle. */
1285         if (index >= req->num_outstanding_cmds) {
1286                 ql_log(ql_log_warn, vha, 0x3014,
1287                     "Invalid SCSI command index (%x).\n", index);
1288
1289                 if (IS_P3P_TYPE(ha))
1290                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1291                 else
1292                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1293                 return;
1294         }
1295
1296         sp = req->outstanding_cmds[index];
1297         if (sp) {
1298                 /* Free outstanding command slot. */
1299                 req->outstanding_cmds[index] = NULL;
1300
1301                 /* Save ISP completion status */
1302                 sp->done(sp, DID_OK << 16);
1303         } else {
1304                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1305
1306                 if (IS_P3P_TYPE(ha))
1307                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1308                 else
1309                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1310         }
1311 }
1312
1313 srb_t *
1314 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1315     struct req_que *req, void *iocb)
1316 {
1317         struct qla_hw_data *ha = vha->hw;
1318         sts_entry_t *pkt = iocb;
1319         srb_t *sp = NULL;
1320         uint16_t index;
1321
1322         index = LSW(pkt->handle);
1323         if (index >= req->num_outstanding_cmds) {
1324                 ql_log(ql_log_warn, vha, 0x5031,
1325                            "Invalid command index (%x) type %8ph.\n",
1326                            index, iocb);
1327                 if (IS_P3P_TYPE(ha))
1328                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1329                 else
1330                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1331                 goto done;
1332         }
1333         sp = req->outstanding_cmds[index];
1334         if (!sp) {
1335                 ql_log(ql_log_warn, vha, 0x5032,
1336                     "Invalid completion handle (%x) -- timed-out.\n", index);
1337                 return sp;
1338         }
1339         if (sp->handle != index) {
1340                 ql_log(ql_log_warn, vha, 0x5033,
1341                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1342                 return NULL;
1343         }
1344
1345         req->outstanding_cmds[index] = NULL;
1346
1347 done:
1348         return sp;
1349 }
1350
1351 static void
1352 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1353     struct mbx_entry *mbx)
1354 {
1355         const char func[] = "MBX-IOCB";
1356         const char *type;
1357         fc_port_t *fcport;
1358         srb_t *sp;
1359         struct srb_iocb *lio;
1360         uint16_t *data;
1361         uint16_t status;
1362
1363         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1364         if (!sp)
1365                 return;
1366
1367         lio = &sp->u.iocb_cmd;
1368         type = sp->name;
1369         fcport = sp->fcport;
1370         data = lio->u.logio.data;
1371
1372         data[0] = MBS_COMMAND_ERROR;
1373         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1374             QLA_LOGIO_LOGIN_RETRIED : 0;
1375         if (mbx->entry_status) {
1376                 ql_dbg(ql_dbg_async, vha, 0x5043,
1377                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1378                     "entry-status=%x status=%x state-flag=%x "
1379                     "status-flags=%x.\n", type, sp->handle,
1380                     fcport->d_id.b.domain, fcport->d_id.b.area,
1381                     fcport->d_id.b.al_pa, mbx->entry_status,
1382                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1383                     le16_to_cpu(mbx->status_flags));
1384
1385                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1386                     mbx, sizeof(*mbx));
1387
1388                 goto logio_done;
1389         }
1390
1391         status = le16_to_cpu(mbx->status);
1392         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1393             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1394                 status = 0;
1395         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1396                 ql_dbg(ql_dbg_async, vha, 0x5045,
1397                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1398                     type, sp->handle, fcport->d_id.b.domain,
1399                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1400                     le16_to_cpu(mbx->mb1));
1401
1402                 data[0] = MBS_COMMAND_COMPLETE;
1403                 if (sp->type == SRB_LOGIN_CMD) {
1404                         fcport->port_type = FCT_TARGET;
1405                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1406                                 fcport->port_type = FCT_INITIATOR;
1407                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1408                                 fcport->flags |= FCF_FCP2_DEVICE;
1409                 }
1410                 goto logio_done;
1411         }
1412
1413         data[0] = le16_to_cpu(mbx->mb0);
1414         switch (data[0]) {
1415         case MBS_PORT_ID_USED:
1416                 data[1] = le16_to_cpu(mbx->mb1);
1417                 break;
1418         case MBS_LOOP_ID_USED:
1419                 break;
1420         default:
1421                 data[0] = MBS_COMMAND_ERROR;
1422                 break;
1423         }
1424
1425         ql_log(ql_log_warn, vha, 0x5046,
1426             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1427             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1428             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1429             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1430             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1431             le16_to_cpu(mbx->mb7));
1432
1433 logio_done:
1434         sp->done(sp, 0);
1435 }
1436
1437 static void
1438 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1439     struct mbx_24xx_entry *pkt)
1440 {
1441         const char func[] = "MBX-IOCB2";
1442         srb_t *sp;
1443         struct srb_iocb *si;
1444         u16 sz, i;
1445         int res;
1446
1447         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1448         if (!sp)
1449                 return;
1450
1451         si = &sp->u.iocb_cmd;
1452         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1453
1454         for (i = 0; i < sz; i++)
1455                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1456
1457         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1458
1459         sp->done(sp, res);
1460 }
1461
1462 static void
1463 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1464     struct nack_to_isp *pkt)
1465 {
1466         const char func[] = "nack";
1467         srb_t *sp;
1468         int res = 0;
1469
1470         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1471         if (!sp)
1472                 return;
1473
1474         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1475                 res = QLA_FUNCTION_FAILED;
1476
1477         sp->done(sp, res);
1478 }
1479
1480 static void
1481 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1482     sts_entry_t *pkt, int iocb_type)
1483 {
1484         const char func[] = "CT_IOCB";
1485         const char *type;
1486         srb_t *sp;
1487         struct bsg_job *bsg_job;
1488         struct fc_bsg_reply *bsg_reply;
1489         uint16_t comp_status;
1490         int res = 0;
1491
1492         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1493         if (!sp)
1494                 return;
1495
1496         switch (sp->type) {
1497         case SRB_CT_CMD:
1498             bsg_job = sp->u.bsg_job;
1499             bsg_reply = bsg_job->reply;
1500
1501             type = "ct pass-through";
1502
1503             comp_status = le16_to_cpu(pkt->comp_status);
1504
1505             /*
1506              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1507              * fc payload  to the caller
1508              */
1509             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1510             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1511
1512             if (comp_status != CS_COMPLETE) {
1513                     if (comp_status == CS_DATA_UNDERRUN) {
1514                             res = DID_OK << 16;
1515                             bsg_reply->reply_payload_rcv_len =
1516                                 le16_to_cpu(pkt->rsp_info_len);
1517
1518                             ql_log(ql_log_warn, vha, 0x5048,
1519                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1520                                 type, comp_status,
1521                                 bsg_reply->reply_payload_rcv_len);
1522                     } else {
1523                             ql_log(ql_log_warn, vha, 0x5049,
1524                                 "CT pass-through-%s error comp_status=0x%x.\n",
1525                                 type, comp_status);
1526                             res = DID_ERROR << 16;
1527                             bsg_reply->reply_payload_rcv_len = 0;
1528                     }
1529                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1530                         pkt, sizeof(*pkt));
1531             } else {
1532                     res = DID_OK << 16;
1533                     bsg_reply->reply_payload_rcv_len =
1534                         bsg_job->reply_payload.payload_len;
1535                     bsg_job->reply_len = 0;
1536             }
1537             break;
1538         case SRB_CT_PTHRU_CMD:
1539             /*
1540              * borrowing sts_entry_24xx.comp_status.
1541              * same location as ct_entry_24xx.comp_status
1542              */
1543              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1544                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1545                  sp->name);
1546              break;
1547         }
1548
1549         sp->done(sp, res);
1550 }
1551
1552 static void
1553 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1554     struct sts_entry_24xx *pkt, int iocb_type)
1555 {
1556         const char func[] = "ELS_CT_IOCB";
1557         const char *type;
1558         srb_t *sp;
1559         struct bsg_job *bsg_job;
1560         struct fc_bsg_reply *bsg_reply;
1561         uint16_t comp_status;
1562         uint32_t fw_status[3];
1563         int res;
1564         struct srb_iocb *els;
1565
1566         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1567         if (!sp)
1568                 return;
1569
1570         type = NULL;
1571         switch (sp->type) {
1572         case SRB_ELS_CMD_RPT:
1573         case SRB_ELS_CMD_HST:
1574                 type = "els";
1575                 break;
1576         case SRB_CT_CMD:
1577                 type = "ct pass-through";
1578                 break;
1579         case SRB_ELS_DCMD:
1580                 type = "Driver ELS logo";
1581                 if (iocb_type != ELS_IOCB_TYPE) {
1582                         ql_dbg(ql_dbg_user, vha, 0x5047,
1583                             "Completing %s: (%p) type=%d.\n",
1584                             type, sp, sp->type);
1585                         sp->done(sp, 0);
1586                         return;
1587                 }
1588                 break;
1589         case SRB_CT_PTHRU_CMD:
1590                 /* borrowing sts_entry_24xx.comp_status.
1591                    same location as ct_entry_24xx.comp_status
1592                  */
1593                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1594                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1595                         sp->name);
1596                 sp->done(sp, res);
1597                 return;
1598         default:
1599                 ql_dbg(ql_dbg_user, vha, 0x503e,
1600                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1601                 return;
1602         }
1603
1604         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1605         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_1);
1606         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_2);
1607
1608         if (iocb_type == ELS_IOCB_TYPE) {
1609                 els = &sp->u.iocb_cmd;
1610                 els->u.els_plogi.fw_status[0] = fw_status[0];
1611                 els->u.els_plogi.fw_status[1] = fw_status[1];
1612                 els->u.els_plogi.fw_status[2] = fw_status[2];
1613                 els->u.els_plogi.comp_status = fw_status[0];
1614                 if (comp_status == CS_COMPLETE) {
1615                         res =  DID_OK << 16;
1616                 } else {
1617                         if (comp_status == CS_DATA_UNDERRUN) {
1618                                 res =  DID_OK << 16;
1619                                 els->u.els_plogi.len =
1620                                 le16_to_cpu(((struct els_sts_entry_24xx *)
1621                                         pkt)->total_byte_count);
1622                         } else {
1623                                 els->u.els_plogi.len = 0;
1624                                 res = DID_ERROR << 16;
1625                         }
1626                 }
1627                 ql_dbg(ql_dbg_user, vha, 0x503f,
1628                     "ELS IOCB Done -%s error hdl=%x comp_status=0x%x error subcode 1=0x%x error subcode 2=0x%x total_byte=0x%x\n",
1629                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
1630                     le16_to_cpu(((struct els_sts_entry_24xx *)
1631                         pkt)->total_byte_count));
1632                 goto els_ct_done;
1633         }
1634
1635         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1636          * fc payload  to the caller
1637          */
1638         bsg_job = sp->u.bsg_job;
1639         bsg_reply = bsg_job->reply;
1640         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1641         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1642
1643         if (comp_status != CS_COMPLETE) {
1644                 if (comp_status == CS_DATA_UNDERRUN) {
1645                         res = DID_OK << 16;
1646                         bsg_reply->reply_payload_rcv_len =
1647                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1648
1649                         ql_dbg(ql_dbg_user, vha, 0x503f,
1650                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1651                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1652                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1653                             le16_to_cpu(((struct els_sts_entry_24xx *)
1654                                 pkt)->total_byte_count));
1655                 } else {
1656                         ql_dbg(ql_dbg_user, vha, 0x5040,
1657                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1658                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1659                             type, sp->handle, comp_status,
1660                             le16_to_cpu(((struct els_sts_entry_24xx *)
1661                                 pkt)->error_subcode_1),
1662                             le16_to_cpu(((struct els_sts_entry_24xx *)
1663                                     pkt)->error_subcode_2));
1664                         res = DID_ERROR << 16;
1665                         bsg_reply->reply_payload_rcv_len = 0;
1666                 }
1667                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
1668                        fw_status, sizeof(fw_status));
1669                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1670                     pkt, sizeof(*pkt));
1671         }
1672         else {
1673                 res =  DID_OK << 16;
1674                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1675                 bsg_job->reply_len = 0;
1676         }
1677 els_ct_done:
1678
1679         sp->done(sp, res);
1680 }
1681
1682 static void
1683 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1684     struct logio_entry_24xx *logio)
1685 {
1686         const char func[] = "LOGIO-IOCB";
1687         const char *type;
1688         fc_port_t *fcport;
1689         srb_t *sp;
1690         struct srb_iocb *lio;
1691         uint16_t *data;
1692         uint32_t iop[2];
1693
1694         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1695         if (!sp)
1696                 return;
1697
1698         lio = &sp->u.iocb_cmd;
1699         type = sp->name;
1700         fcport = sp->fcport;
1701         data = lio->u.logio.data;
1702
1703         data[0] = MBS_COMMAND_ERROR;
1704         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1705                 QLA_LOGIO_LOGIN_RETRIED : 0;
1706         if (logio->entry_status) {
1707                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1708                     "Async-%s error entry - %8phC hdl=%x"
1709                     "portid=%02x%02x%02x entry-status=%x.\n",
1710                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1711                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1712                     logio->entry_status);
1713                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1714                     logio, sizeof(*logio));
1715
1716                 goto logio_done;
1717         }
1718
1719         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1720                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1721                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1722                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1723                     fcport->d_id.b.domain,
1724                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1725                     le32_to_cpu(logio->io_parameter[0]));
1726
1727                 vha->hw->exch_starvation = 0;
1728                 data[0] = MBS_COMMAND_COMPLETE;
1729
1730                 if (sp->type == SRB_PRLI_CMD) {
1731                         lio->u.logio.iop[0] =
1732                             le32_to_cpu(logio->io_parameter[0]);
1733                         lio->u.logio.iop[1] =
1734                             le32_to_cpu(logio->io_parameter[1]);
1735                         goto logio_done;
1736                 }
1737
1738                 if (sp->type != SRB_LOGIN_CMD)
1739                         goto logio_done;
1740
1741                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1742                 if (iop[0] & BIT_4) {
1743                         fcport->port_type = FCT_TARGET;
1744                         if (iop[0] & BIT_8)
1745                                 fcport->flags |= FCF_FCP2_DEVICE;
1746                 } else if (iop[0] & BIT_5)
1747                         fcport->port_type = FCT_INITIATOR;
1748
1749                 if (iop[0] & BIT_7)
1750                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1751
1752                 if (logio->io_parameter[7] || logio->io_parameter[8])
1753                         fcport->supported_classes |= FC_COS_CLASS2;
1754                 if (logio->io_parameter[9] || logio->io_parameter[10])
1755                         fcport->supported_classes |= FC_COS_CLASS3;
1756
1757                 goto logio_done;
1758         }
1759
1760         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1761         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1762         lio->u.logio.iop[0] = iop[0];
1763         lio->u.logio.iop[1] = iop[1];
1764         switch (iop[0]) {
1765         case LSC_SCODE_PORTID_USED:
1766                 data[0] = MBS_PORT_ID_USED;
1767                 data[1] = LSW(iop[1]);
1768                 break;
1769         case LSC_SCODE_NPORT_USED:
1770                 data[0] = MBS_LOOP_ID_USED;
1771                 break;
1772         case LSC_SCODE_CMD_FAILED:
1773                 if (iop[1] == 0x0606) {
1774                         /*
1775                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1776                          * Target side acked.
1777                          */
1778                         data[0] = MBS_COMMAND_COMPLETE;
1779                         goto logio_done;
1780                 }
1781                 data[0] = MBS_COMMAND_ERROR;
1782                 break;
1783         case LSC_SCODE_NOXCB:
1784                 vha->hw->exch_starvation++;
1785                 if (vha->hw->exch_starvation > 5) {
1786                         ql_log(ql_log_warn, vha, 0xd046,
1787                             "Exchange starvation. Resetting RISC\n");
1788
1789                         vha->hw->exch_starvation = 0;
1790
1791                         if (IS_P3P_TYPE(vha->hw))
1792                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1793                         else
1794                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1795                         qla2xxx_wake_dpc(vha);
1796                 }
1797                 /* fall through */
1798         default:
1799                 data[0] = MBS_COMMAND_ERROR;
1800                 break;
1801         }
1802
1803         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1804             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1805             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1806                 sp->handle, fcport->d_id.b.domain,
1807             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1808             le16_to_cpu(logio->comp_status),
1809             le32_to_cpu(logio->io_parameter[0]),
1810             le32_to_cpu(logio->io_parameter[1]));
1811
1812 logio_done:
1813         sp->done(sp, 0);
1814 }
1815
1816 static void
1817 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1818 {
1819         const char func[] = "TMF-IOCB";
1820         const char *type;
1821         fc_port_t *fcport;
1822         srb_t *sp;
1823         struct srb_iocb *iocb;
1824         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1825
1826         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1827         if (!sp)
1828                 return;
1829
1830         iocb = &sp->u.iocb_cmd;
1831         type = sp->name;
1832         fcport = sp->fcport;
1833         iocb->u.tmf.data = QLA_SUCCESS;
1834
1835         if (sts->entry_status) {
1836                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1837                     "Async-%s error - hdl=%x entry-status(%x).\n",
1838                     type, sp->handle, sts->entry_status);
1839                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1840         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1841                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1842                     "Async-%s error - hdl=%x completion status(%x).\n",
1843                     type, sp->handle, sts->comp_status);
1844                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1845         } else if ((le16_to_cpu(sts->scsi_status) &
1846             SS_RESPONSE_INFO_LEN_VALID)) {
1847                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1848                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1849                             "Async-%s error - hdl=%x not enough response(%d).\n",
1850                             type, sp->handle, sts->rsp_data_len);
1851                 } else if (sts->data[3]) {
1852                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1853                             "Async-%s error - hdl=%x response(%x).\n",
1854                             type, sp->handle, sts->data[3]);
1855                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1856                 }
1857         }
1858
1859         if (iocb->u.tmf.data != QLA_SUCCESS)
1860                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
1861                     sts, sizeof(*sts));
1862
1863         sp->done(sp, 0);
1864 }
1865
1866 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1867     void *tsk, srb_t *sp)
1868 {
1869         fc_port_t *fcport;
1870         struct srb_iocb *iocb;
1871         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1872         uint16_t        state_flags;
1873         struct nvmefc_fcp_req *fd;
1874         uint16_t        ret = QLA_SUCCESS;
1875         uint16_t        comp_status = le16_to_cpu(sts->comp_status);
1876
1877         iocb = &sp->u.iocb_cmd;
1878         fcport = sp->fcport;
1879         iocb->u.nvme.comp_status = comp_status;
1880         state_flags  = le16_to_cpu(sts->state_flags);
1881         fd = iocb->u.nvme.desc;
1882
1883         if (unlikely(iocb->u.nvme.aen_op))
1884                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1885
1886         /*
1887          * State flags: Bit 6 and 0.
1888          * If 0 is set, we don't care about 6.
1889          * both cases resp was dma'd to host buffer
1890          * if both are 0, that is good path case.
1891          * if six is set and 0 is clear, we need to
1892          * copy resp data from status iocb to resp buffer.
1893          */
1894         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1895                 iocb->u.nvme.rsp_pyld_len = 0;
1896         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1897                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1898         } else if (state_flags & SF_NVME_ERSP) {
1899                 uint32_t *inbuf, *outbuf;
1900                 uint16_t iter;
1901
1902                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1903                 outbuf = (uint32_t *)fd->rspaddr;
1904                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1905                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1906                 for (; iter; iter--)
1907                         *outbuf++ = swab32(*inbuf++);
1908         } else { /* unhandled case */
1909             ql_log(ql_log_warn, fcport->vha, 0x503a,
1910                 "NVME-%s error. Unhandled state_flags of %x\n",
1911                 sp->name, state_flags);
1912         }
1913
1914         fd->transferred_length = fd->payload_length -
1915             le32_to_cpu(sts->residual_len);
1916
1917         if (unlikely(comp_status != CS_COMPLETE))
1918                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1919                    "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
1920                    sp->name, sp->handle, comp_status,
1921                    fd->transferred_length, le32_to_cpu(sts->residual_len),
1922                    sts->ox_id);
1923
1924         /*
1925          * If transport error then Failure (HBA rejects request)
1926          * otherwise transport will handle.
1927          */
1928         switch (comp_status) {
1929         case CS_COMPLETE:
1930                 break;
1931
1932         case CS_RESET:
1933         case CS_PORT_UNAVAILABLE:
1934         case CS_PORT_LOGGED_OUT:
1935                 fcport->nvme_flag |= NVME_FLAG_RESETTING;
1936                 /* fall through */
1937         case CS_ABORTED:
1938         case CS_PORT_BUSY:
1939                 fd->transferred_length = 0;
1940                 iocb->u.nvme.rsp_pyld_len = 0;
1941                 ret = QLA_ABORTED;
1942                 break;
1943         case CS_DATA_UNDERRUN:
1944                 break;
1945         default:
1946                 ret = QLA_FUNCTION_FAILED;
1947                 break;
1948         }
1949         sp->done(sp, ret);
1950 }
1951
1952 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
1953     struct vp_ctrl_entry_24xx *vce)
1954 {
1955         const char func[] = "CTRLVP-IOCB";
1956         srb_t *sp;
1957         int rval = QLA_SUCCESS;
1958
1959         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
1960         if (!sp)
1961                 return;
1962
1963         if (vce->entry_status != 0) {
1964                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
1965                     "%s: Failed to complete IOCB -- error status (%x)\n",
1966                     sp->name, vce->entry_status);
1967                 rval = QLA_FUNCTION_FAILED;
1968         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
1969                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
1970                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
1971                     sp->name, le16_to_cpu(vce->comp_status),
1972                     le16_to_cpu(vce->vp_idx_failed));
1973                 rval = QLA_FUNCTION_FAILED;
1974         } else {
1975                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
1976                     "Done %s.\n", __func__);
1977         }
1978
1979         sp->rc = rval;
1980         sp->done(sp, rval);
1981 }
1982
1983 /* Process a single response queue entry. */
1984 static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
1985                                            struct rsp_que *rsp,
1986                                            sts_entry_t *pkt)
1987 {
1988         sts21_entry_t *sts21_entry;
1989         sts22_entry_t *sts22_entry;
1990         uint16_t handle_cnt;
1991         uint16_t cnt;
1992
1993         switch (pkt->entry_type) {
1994         case STATUS_TYPE:
1995                 qla2x00_status_entry(vha, rsp, pkt);
1996                 break;
1997         case STATUS_TYPE_21:
1998                 sts21_entry = (sts21_entry_t *)pkt;
1999                 handle_cnt = sts21_entry->handle_count;
2000                 for (cnt = 0; cnt < handle_cnt; cnt++)
2001                         qla2x00_process_completed_request(vha, rsp->req,
2002                                                 sts21_entry->handle[cnt]);
2003                 break;
2004         case STATUS_TYPE_22:
2005                 sts22_entry = (sts22_entry_t *)pkt;
2006                 handle_cnt = sts22_entry->handle_count;
2007                 for (cnt = 0; cnt < handle_cnt; cnt++)
2008                         qla2x00_process_completed_request(vha, rsp->req,
2009                                                 sts22_entry->handle[cnt]);
2010                 break;
2011         case STATUS_CONT_TYPE:
2012                 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2013                 break;
2014         case MBX_IOCB_TYPE:
2015                 qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
2016                 break;
2017         case CT_IOCB_TYPE:
2018                 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2019                 break;
2020         default:
2021                 /* Type Not Supported. */
2022                 ql_log(ql_log_warn, vha, 0x504a,
2023                        "Received unknown response pkt type %x entry status=%x.\n",
2024                        pkt->entry_type, pkt->entry_status);
2025                 break;
2026         }
2027 }
2028
2029 /**
2030  * qla2x00_process_response_queue() - Process response queue entries.
2031  * @rsp: response queue
2032  */
2033 void
2034 qla2x00_process_response_queue(struct rsp_que *rsp)
2035 {
2036         struct scsi_qla_host *vha;
2037         struct qla_hw_data *ha = rsp->hw;
2038         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2039         sts_entry_t     *pkt;
2040
2041         vha = pci_get_drvdata(ha->pdev);
2042
2043         if (!vha->flags.online)
2044                 return;
2045
2046         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2047                 pkt = (sts_entry_t *)rsp->ring_ptr;
2048
2049                 rsp->ring_index++;
2050                 if (rsp->ring_index == rsp->length) {
2051                         rsp->ring_index = 0;
2052                         rsp->ring_ptr = rsp->ring;
2053                 } else {
2054                         rsp->ring_ptr++;
2055                 }
2056
2057                 if (pkt->entry_status != 0) {
2058                         qla2x00_error_entry(vha, rsp, pkt);
2059                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2060                         wmb();
2061                         continue;
2062                 }
2063
2064                 qla2x00_process_response_entry(vha, rsp, pkt);
2065                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2066                 wmb();
2067         }
2068
2069         /* Adjust ring index */
2070         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2071 }
2072
2073 static inline void
2074 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2075                      uint32_t sense_len, struct rsp_que *rsp, int res)
2076 {
2077         struct scsi_qla_host *vha = sp->vha;
2078         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2079         uint32_t track_sense_len;
2080
2081         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2082                 sense_len = SCSI_SENSE_BUFFERSIZE;
2083
2084         SET_CMD_SENSE_LEN(sp, sense_len);
2085         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2086         track_sense_len = sense_len;
2087
2088         if (sense_len > par_sense_len)
2089                 sense_len = par_sense_len;
2090
2091         memcpy(cp->sense_buffer, sense_data, sense_len);
2092
2093         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2094         track_sense_len -= sense_len;
2095         SET_CMD_SENSE_LEN(sp, track_sense_len);
2096
2097         if (track_sense_len != 0) {
2098                 rsp->status_srb = sp;
2099                 cp->result = res;
2100         }
2101
2102         if (sense_len) {
2103                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2104                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2105                     sp->vha->host_no, cp->device->id, cp->device->lun,
2106                     cp);
2107                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2108                     cp->sense_buffer, sense_len);
2109         }
2110 }
2111
2112 struct scsi_dif_tuple {
2113         __be16 guard;       /* Checksum */
2114         __be16 app_tag;         /* APPL identifier */
2115         __be32 ref_tag;         /* Target LBA or indirect LBA */
2116 };
2117
2118 /*
2119  * Checks the guard or meta-data for the type of error
2120  * detected by the HBA. In case of errors, we set the
2121  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2122  * to indicate to the kernel that the HBA detected error.
2123  */
2124 static inline int
2125 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2126 {
2127         struct scsi_qla_host *vha = sp->vha;
2128         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2129         uint8_t         *ap = &sts24->data[12];
2130         uint8_t         *ep = &sts24->data[20];
2131         uint32_t        e_ref_tag, a_ref_tag;
2132         uint16_t        e_app_tag, a_app_tag;
2133         uint16_t        e_guard, a_guard;
2134
2135         /*
2136          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2137          * would make guard field appear at offset 2
2138          */
2139         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
2140         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
2141         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
2142         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
2143         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
2144         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
2145
2146         ql_dbg(ql_dbg_io, vha, 0x3023,
2147             "iocb(s) %p Returned STATUS.\n", sts24);
2148
2149         ql_dbg(ql_dbg_io, vha, 0x3024,
2150             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2151             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2152             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2153             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2154             a_app_tag, e_app_tag, a_guard, e_guard);
2155
2156         /*
2157          * Ignore sector if:
2158          * For type     3: ref & app tag is all 'f's
2159          * For type 0,1,2: app tag is all 'f's
2160          */
2161         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2162             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2163              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2164                 uint32_t blocks_done, resid;
2165                 sector_t lba_s = scsi_get_lba(cmd);
2166
2167                 /* 2TB boundary case covered automatically with this */
2168                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2169
2170                 resid = scsi_bufflen(cmd) - (blocks_done *
2171                     cmd->device->sector_size);
2172
2173                 scsi_set_resid(cmd, resid);
2174                 cmd->result = DID_OK << 16;
2175
2176                 /* Update protection tag */
2177                 if (scsi_prot_sg_count(cmd)) {
2178                         uint32_t i, j = 0, k = 0, num_ent;
2179                         struct scatterlist *sg;
2180                         struct t10_pi_tuple *spt;
2181
2182                         /* Patch the corresponding protection tags */
2183                         scsi_for_each_prot_sg(cmd, sg,
2184                             scsi_prot_sg_count(cmd), i) {
2185                                 num_ent = sg_dma_len(sg) / 8;
2186                                 if (k + num_ent < blocks_done) {
2187                                         k += num_ent;
2188                                         continue;
2189                                 }
2190                                 j = blocks_done - k - 1;
2191                                 k = blocks_done;
2192                                 break;
2193                         }
2194
2195                         if (k != blocks_done) {
2196                                 ql_log(ql_log_warn, vha, 0x302f,
2197                                     "unexpected tag values tag:lba=%x:%llx)\n",
2198                                     e_ref_tag, (unsigned long long)lba_s);
2199                                 return 1;
2200                         }
2201
2202                         spt = page_address(sg_page(sg)) + sg->offset;
2203                         spt += j;
2204
2205                         spt->app_tag = T10_PI_APP_ESCAPE;
2206                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2207                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2208                 }
2209
2210                 return 0;
2211         }
2212
2213         /* check guard */
2214         if (e_guard != a_guard) {
2215                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2216                     0x10, 0x1);
2217                 set_driver_byte(cmd, DRIVER_SENSE);
2218                 set_host_byte(cmd, DID_ABORT);
2219                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2220                 return 1;
2221         }
2222
2223         /* check ref tag */
2224         if (e_ref_tag != a_ref_tag) {
2225                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2226                     0x10, 0x3);
2227                 set_driver_byte(cmd, DRIVER_SENSE);
2228                 set_host_byte(cmd, DID_ABORT);
2229                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2230                 return 1;
2231         }
2232
2233         /* check appl tag */
2234         if (e_app_tag != a_app_tag) {
2235                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2236                     0x10, 0x2);
2237                 set_driver_byte(cmd, DRIVER_SENSE);
2238                 set_host_byte(cmd, DID_ABORT);
2239                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2240                 return 1;
2241         }
2242
2243         return 1;
2244 }
2245
2246 static void
2247 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2248                                   struct req_que *req, uint32_t index)
2249 {
2250         struct qla_hw_data *ha = vha->hw;
2251         srb_t *sp;
2252         uint16_t        comp_status;
2253         uint16_t        scsi_status;
2254         uint16_t thread_id;
2255         uint32_t rval = EXT_STATUS_OK;
2256         struct bsg_job *bsg_job = NULL;
2257         struct fc_bsg_request *bsg_request;
2258         struct fc_bsg_reply *bsg_reply;
2259         sts_entry_t *sts = pkt;
2260         struct sts_entry_24xx *sts24 = pkt;
2261
2262         /* Validate handle. */
2263         if (index >= req->num_outstanding_cmds) {
2264                 ql_log(ql_log_warn, vha, 0x70af,
2265                     "Invalid SCSI completion handle 0x%x.\n", index);
2266                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2267                 return;
2268         }
2269
2270         sp = req->outstanding_cmds[index];
2271         if (!sp) {
2272                 ql_log(ql_log_warn, vha, 0x70b0,
2273                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2274                     req->id, index);
2275
2276                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2277                 return;
2278         }
2279
2280         /* Free outstanding command slot. */
2281         req->outstanding_cmds[index] = NULL;
2282         bsg_job = sp->u.bsg_job;
2283         bsg_request = bsg_job->request;
2284         bsg_reply = bsg_job->reply;
2285
2286         if (IS_FWI2_CAPABLE(ha)) {
2287                 comp_status = le16_to_cpu(sts24->comp_status);
2288                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2289         } else {
2290                 comp_status = le16_to_cpu(sts->comp_status);
2291                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2292         }
2293
2294         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2295         switch (comp_status) {
2296         case CS_COMPLETE:
2297                 if (scsi_status == 0) {
2298                         bsg_reply->reply_payload_rcv_len =
2299                                         bsg_job->reply_payload.payload_len;
2300                         vha->qla_stats.input_bytes +=
2301                                 bsg_reply->reply_payload_rcv_len;
2302                         vha->qla_stats.input_requests++;
2303                         rval = EXT_STATUS_OK;
2304                 }
2305                 goto done;
2306
2307         case CS_DATA_OVERRUN:
2308                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2309                     "Command completed with data overrun thread_id=%d\n",
2310                     thread_id);
2311                 rval = EXT_STATUS_DATA_OVERRUN;
2312                 break;
2313
2314         case CS_DATA_UNDERRUN:
2315                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2316                     "Command completed with data underrun thread_id=%d\n",
2317                     thread_id);
2318                 rval = EXT_STATUS_DATA_UNDERRUN;
2319                 break;
2320         case CS_BIDIR_RD_OVERRUN:
2321                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2322                     "Command completed with read data overrun thread_id=%d\n",
2323                     thread_id);
2324                 rval = EXT_STATUS_DATA_OVERRUN;
2325                 break;
2326
2327         case CS_BIDIR_RD_WR_OVERRUN:
2328                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2329                     "Command completed with read and write data overrun "
2330                     "thread_id=%d\n", thread_id);
2331                 rval = EXT_STATUS_DATA_OVERRUN;
2332                 break;
2333
2334         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2335                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2336                     "Command completed with read data over and write data "
2337                     "underrun thread_id=%d\n", thread_id);
2338                 rval = EXT_STATUS_DATA_OVERRUN;
2339                 break;
2340
2341         case CS_BIDIR_RD_UNDERRUN:
2342                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2343                     "Command completed with read data underrun "
2344                     "thread_id=%d\n", thread_id);
2345                 rval = EXT_STATUS_DATA_UNDERRUN;
2346                 break;
2347
2348         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2349                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2350                     "Command completed with read data under and write data "
2351                     "overrun thread_id=%d\n", thread_id);
2352                 rval = EXT_STATUS_DATA_UNDERRUN;
2353                 break;
2354
2355         case CS_BIDIR_RD_WR_UNDERRUN:
2356                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2357                     "Command completed with read and write data underrun "
2358                     "thread_id=%d\n", thread_id);
2359                 rval = EXT_STATUS_DATA_UNDERRUN;
2360                 break;
2361
2362         case CS_BIDIR_DMA:
2363                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2364                     "Command completed with data DMA error thread_id=%d\n",
2365                     thread_id);
2366                 rval = EXT_STATUS_DMA_ERR;
2367                 break;
2368
2369         case CS_TIMEOUT:
2370                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2371                     "Command completed with timeout thread_id=%d\n",
2372                     thread_id);
2373                 rval = EXT_STATUS_TIMEOUT;
2374                 break;
2375         default:
2376                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2377                     "Command completed with completion status=0x%x "
2378                     "thread_id=%d\n", comp_status, thread_id);
2379                 rval = EXT_STATUS_ERR;
2380                 break;
2381         }
2382         bsg_reply->reply_payload_rcv_len = 0;
2383
2384 done:
2385         /* Return the vendor specific reply to API */
2386         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2387         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2388         /* Always return DID_OK, bsg will send the vendor specific response
2389          * in this case only */
2390         sp->done(sp, DID_OK << 16);
2391
2392 }
2393
2394 /**
2395  * qla2x00_status_entry() - Process a Status IOCB entry.
2396  * @vha: SCSI driver HA context
2397  * @rsp: response queue
2398  * @pkt: Entry pointer
2399  */
2400 static void
2401 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2402 {
2403         srb_t           *sp;
2404         fc_port_t       *fcport;
2405         struct scsi_cmnd *cp;
2406         sts_entry_t *sts = pkt;
2407         struct sts_entry_24xx *sts24 = pkt;
2408         uint16_t        comp_status;
2409         uint16_t        scsi_status;
2410         uint16_t        ox_id;
2411         uint8_t         lscsi_status;
2412         int32_t         resid;
2413         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2414             fw_resid_len;
2415         uint8_t         *rsp_info, *sense_data;
2416         struct qla_hw_data *ha = vha->hw;
2417         uint32_t handle;
2418         uint16_t que;
2419         struct req_que *req;
2420         int logit = 1;
2421         int res = 0;
2422         uint16_t state_flags = 0;
2423         uint16_t retry_delay = 0;
2424
2425         if (IS_FWI2_CAPABLE(ha)) {
2426                 comp_status = le16_to_cpu(sts24->comp_status);
2427                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2428                 state_flags = le16_to_cpu(sts24->state_flags);
2429         } else {
2430                 comp_status = le16_to_cpu(sts->comp_status);
2431                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2432         }
2433         handle = (uint32_t) LSW(sts->handle);
2434         que = MSW(sts->handle);
2435         req = ha->req_q_map[que];
2436
2437         /* Check for invalid queue pointer */
2438         if (req == NULL ||
2439             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2440                 ql_dbg(ql_dbg_io, vha, 0x3059,
2441                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2442                     "que=%u.\n", sts->handle, req, que);
2443                 return;
2444         }
2445
2446         /* Validate handle. */
2447         if (handle < req->num_outstanding_cmds) {
2448                 sp = req->outstanding_cmds[handle];
2449                 if (!sp) {
2450                         ql_dbg(ql_dbg_io, vha, 0x3075,
2451                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2452                             __func__, vha->host_no, sts->handle);
2453                         return;
2454                 }
2455         } else {
2456                 ql_dbg(ql_dbg_io, vha, 0x3017,
2457                     "Invalid status handle, out of range (0x%x).\n",
2458                     sts->handle);
2459
2460                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2461                         if (IS_P3P_TYPE(ha))
2462                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2463                         else
2464                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2465                         qla2xxx_wake_dpc(vha);
2466                 }
2467                 return;
2468         }
2469
2470         if (sp->cmd_type != TYPE_SRB) {
2471                 req->outstanding_cmds[handle] = NULL;
2472                 ql_dbg(ql_dbg_io, vha, 0x3015,
2473                     "Unknown sp->cmd_type %x %p).\n",
2474                     sp->cmd_type, sp);
2475                 return;
2476         }
2477
2478         /* NVME completion. */
2479         if (sp->type == SRB_NVME_CMD) {
2480                 req->outstanding_cmds[handle] = NULL;
2481                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2482                 return;
2483         }
2484
2485         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2486                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2487                 return;
2488         }
2489
2490         /* Task Management completion. */
2491         if (sp->type == SRB_TM_CMD) {
2492                 qla24xx_tm_iocb_entry(vha, req, pkt);
2493                 return;
2494         }
2495
2496         /* Fast path completion. */
2497         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2498                 qla2x00_process_completed_request(vha, req, handle);
2499
2500                 return;
2501         }
2502
2503         req->outstanding_cmds[handle] = NULL;
2504         cp = GET_CMD_SP(sp);
2505         if (cp == NULL) {
2506                 ql_dbg(ql_dbg_io, vha, 0x3018,
2507                     "Command already returned (0x%x/%p).\n",
2508                     sts->handle, sp);
2509
2510                 return;
2511         }
2512
2513         lscsi_status = scsi_status & STATUS_MASK;
2514
2515         fcport = sp->fcport;
2516
2517         ox_id = 0;
2518         sense_len = par_sense_len = rsp_info_len = resid_len =
2519             fw_resid_len = 0;
2520         if (IS_FWI2_CAPABLE(ha)) {
2521                 if (scsi_status & SS_SENSE_LEN_VALID)
2522                         sense_len = le32_to_cpu(sts24->sense_len);
2523                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2524                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2525                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2526                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2527                 if (comp_status == CS_DATA_UNDERRUN)
2528                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2529                 rsp_info = sts24->data;
2530                 sense_data = sts24->data;
2531                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2532                 ox_id = le16_to_cpu(sts24->ox_id);
2533                 par_sense_len = sizeof(sts24->data);
2534                 /* Valid values of the retry delay timer are 0x1-0xffef */
2535                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
2536                         retry_delay = sts24->retry_delay & 0x3fff;
2537                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2538                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2539                             sts24->retry_delay >> 14, retry_delay);
2540                 }
2541         } else {
2542                 if (scsi_status & SS_SENSE_LEN_VALID)
2543                         sense_len = le16_to_cpu(sts->req_sense_length);
2544                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2545                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2546                 resid_len = le32_to_cpu(sts->residual_length);
2547                 rsp_info = sts->rsp_info;
2548                 sense_data = sts->req_sense_data;
2549                 par_sense_len = sizeof(sts->req_sense_data);
2550         }
2551
2552         /* Check for any FCP transport errors. */
2553         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2554                 /* Sense data lies beyond any FCP RESPONSE data. */
2555                 if (IS_FWI2_CAPABLE(ha)) {
2556                         sense_data += rsp_info_len;
2557                         par_sense_len -= rsp_info_len;
2558                 }
2559                 if (rsp_info_len > 3 && rsp_info[3]) {
2560                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2561                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2562                             rsp_info_len, rsp_info[3]);
2563
2564                         res = DID_BUS_BUSY << 16;
2565                         goto out;
2566                 }
2567         }
2568
2569         /* Check for overrun. */
2570         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2571             scsi_status & SS_RESIDUAL_OVER)
2572                 comp_status = CS_DATA_OVERRUN;
2573
2574         /*
2575          * Check retry_delay_timer value if we receive a busy or
2576          * queue full.
2577          */
2578         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2579             lscsi_status == SAM_STAT_BUSY)
2580                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2581
2582         /*
2583          * Based on Host and scsi status generate status code for Linux
2584          */
2585         switch (comp_status) {
2586         case CS_COMPLETE:
2587         case CS_QUEUE_FULL:
2588                 if (scsi_status == 0) {
2589                         res = DID_OK << 16;
2590                         break;
2591                 }
2592                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2593                         resid = resid_len;
2594                         scsi_set_resid(cp, resid);
2595
2596                         if (!lscsi_status &&
2597                             ((unsigned)(scsi_bufflen(cp) - resid) <
2598                              cp->underflow)) {
2599                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2600                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2601                                     resid, scsi_bufflen(cp));
2602
2603                                 res = DID_ERROR << 16;
2604                                 break;
2605                         }
2606                 }
2607                 res = DID_OK << 16 | lscsi_status;
2608
2609                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2610                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2611                             "QUEUE FULL detected.\n");
2612                         break;
2613                 }
2614                 logit = 0;
2615                 if (lscsi_status != SS_CHECK_CONDITION)
2616                         break;
2617
2618                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2619                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2620                         break;
2621
2622                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2623                     rsp, res);
2624                 break;
2625
2626         case CS_DATA_UNDERRUN:
2627                 /* Use F/W calculated residual length. */
2628                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2629                 scsi_set_resid(cp, resid);
2630                 if (scsi_status & SS_RESIDUAL_UNDER) {
2631                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2632                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2633                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2634                                     resid, scsi_bufflen(cp));
2635
2636                                 res = DID_ERROR << 16 | lscsi_status;
2637                                 goto check_scsi_status;
2638                         }
2639
2640                         if (!lscsi_status &&
2641                             ((unsigned)(scsi_bufflen(cp) - resid) <
2642                             cp->underflow)) {
2643                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2644                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2645                                     resid, scsi_bufflen(cp));
2646
2647                                 res = DID_ERROR << 16;
2648                                 break;
2649                         }
2650                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2651                             lscsi_status != SAM_STAT_BUSY) {
2652                         /*
2653                          * scsi status of task set and busy are considered to be
2654                          * task not completed.
2655                          */
2656
2657                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2658                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2659                             resid, scsi_bufflen(cp));
2660
2661                         res = DID_ERROR << 16 | lscsi_status;
2662                         goto check_scsi_status;
2663                 } else {
2664                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2665                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2666                             scsi_status, lscsi_status);
2667                 }
2668
2669                 res = DID_OK << 16 | lscsi_status;
2670                 logit = 0;
2671
2672 check_scsi_status:
2673                 /*
2674                  * Check to see if SCSI Status is non zero. If so report SCSI
2675                  * Status.
2676                  */
2677                 if (lscsi_status != 0) {
2678                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2679                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2680                                     "QUEUE FULL detected.\n");
2681                                 logit = 1;
2682                                 break;
2683                         }
2684                         if (lscsi_status != SS_CHECK_CONDITION)
2685                                 break;
2686
2687                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2688                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2689                                 break;
2690
2691                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2692                             sense_len, rsp, res);
2693                 }
2694                 break;
2695
2696         case CS_PORT_LOGGED_OUT:
2697         case CS_PORT_CONFIG_CHG:
2698         case CS_PORT_BUSY:
2699         case CS_INCOMPLETE:
2700         case CS_PORT_UNAVAILABLE:
2701         case CS_TIMEOUT:
2702         case CS_RESET:
2703
2704                 /*
2705                  * We are going to have the fc class block the rport
2706                  * while we try to recover so instruct the mid layer
2707                  * to requeue until the class decides how to handle this.
2708                  */
2709                 res = DID_TRANSPORT_DISRUPTED << 16;
2710
2711                 if (comp_status == CS_TIMEOUT) {
2712                         if (IS_FWI2_CAPABLE(ha))
2713                                 break;
2714                         else if ((le16_to_cpu(sts->status_flags) &
2715                             SF_LOGOUT_SENT) == 0)
2716                                 break;
2717                 }
2718
2719                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2720                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2721                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2722                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2723                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2724                                 port_state_str[FCS_ONLINE],
2725                                 comp_status);
2726
2727                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2728                         qlt_schedule_sess_for_deletion(fcport);
2729                 }
2730
2731                 break;
2732
2733         case CS_ABORTED:
2734                 res = DID_RESET << 16;
2735                 break;
2736
2737         case CS_DIF_ERROR:
2738                 logit = qla2x00_handle_dif_error(sp, sts24);
2739                 res = cp->result;
2740                 break;
2741
2742         case CS_TRANSPORT:
2743                 res = DID_ERROR << 16;
2744
2745                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2746                         break;
2747
2748                 if (state_flags & BIT_4)
2749                         scmd_printk(KERN_WARNING, cp,
2750                             "Unsupported device '%s' found.\n",
2751                             cp->device->vendor);
2752                 break;
2753
2754         case CS_DMA:
2755                 ql_log(ql_log_info, fcport->vha, 0x3022,
2756                     "CS_DMA error: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu portid=%06x oxid=0x%x cdb=%10phN len=0x%x rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2757                     comp_status, scsi_status, res, vha->host_no,
2758                     cp->device->id, cp->device->lun, fcport->d_id.b24,
2759                     ox_id, cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2760                     resid_len, fw_resid_len, sp, cp);
2761                 ql_dump_buffer(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe0ee,
2762                     pkt, sizeof(*sts24));
2763                 res = DID_ERROR << 16;
2764                 break;
2765         default:
2766                 res = DID_ERROR << 16;
2767                 break;
2768         }
2769
2770 out:
2771         if (logit)
2772                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2773                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2774                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2775                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2776                     comp_status, scsi_status, res, vha->host_no,
2777                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2778                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2779                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2780                     resid_len, fw_resid_len, sp, cp);
2781
2782         if (rsp->status_srb == NULL)
2783                 sp->done(sp, res);
2784         else
2785                 WARN_ON_ONCE(true);
2786 }
2787
2788 /**
2789  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2790  * @rsp: response queue
2791  * @pkt: Entry pointer
2792  *
2793  * Extended sense data.
2794  */
2795 static void
2796 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2797 {
2798         uint8_t sense_sz = 0;
2799         struct qla_hw_data *ha = rsp->hw;
2800         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2801         srb_t *sp = rsp->status_srb;
2802         struct scsi_cmnd *cp;
2803         uint32_t sense_len;
2804         uint8_t *sense_ptr;
2805
2806         if (!sp || !GET_CMD_SENSE_LEN(sp))
2807                 return;
2808
2809         sense_len = GET_CMD_SENSE_LEN(sp);
2810         sense_ptr = GET_CMD_SENSE_PTR(sp);
2811
2812         cp = GET_CMD_SP(sp);
2813         if (cp == NULL) {
2814                 ql_log(ql_log_warn, vha, 0x3025,
2815                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2816
2817                 rsp->status_srb = NULL;
2818                 return;
2819         }
2820
2821         if (sense_len > sizeof(pkt->data))
2822                 sense_sz = sizeof(pkt->data);
2823         else
2824                 sense_sz = sense_len;
2825
2826         /* Move sense data. */
2827         if (IS_FWI2_CAPABLE(ha))
2828                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2829         memcpy(sense_ptr, pkt->data, sense_sz);
2830         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2831                 sense_ptr, sense_sz);
2832
2833         sense_len -= sense_sz;
2834         sense_ptr += sense_sz;
2835
2836         SET_CMD_SENSE_PTR(sp, sense_ptr);
2837         SET_CMD_SENSE_LEN(sp, sense_len);
2838
2839         /* Place command on done queue. */
2840         if (sense_len == 0) {
2841                 rsp->status_srb = NULL;
2842                 sp->done(sp, cp->result);
2843         } else {
2844                 WARN_ON_ONCE(true);
2845         }
2846 }
2847
2848 /**
2849  * qla2x00_error_entry() - Process an error entry.
2850  * @vha: SCSI driver HA context
2851  * @rsp: response queue
2852  * @pkt: Entry pointer
2853  * return : 1=allow further error analysis. 0=no additional error analysis.
2854  */
2855 static int
2856 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2857 {
2858         srb_t *sp;
2859         struct qla_hw_data *ha = vha->hw;
2860         const char func[] = "ERROR-IOCB";
2861         uint16_t que = MSW(pkt->handle);
2862         struct req_que *req = NULL;
2863         int res = DID_ERROR << 16;
2864
2865         ql_dbg(ql_dbg_async, vha, 0x502a,
2866             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2867             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2868
2869         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2870                 goto fatal;
2871
2872         req = ha->req_q_map[que];
2873
2874         if (pkt->entry_status & RF_BUSY)
2875                 res = DID_BUS_BUSY << 16;
2876
2877         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2878                 return 0;
2879
2880         switch (pkt->entry_type) {
2881         case NOTIFY_ACK_TYPE:
2882         case STATUS_TYPE:
2883         case STATUS_CONT_TYPE:
2884         case LOGINOUT_PORT_IOCB_TYPE:
2885         case CT_IOCB_TYPE:
2886         case ELS_IOCB_TYPE:
2887         case ABORT_IOCB_TYPE:
2888         case MBX_IOCB_TYPE:
2889         default:
2890                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2891                 if (sp) {
2892                         sp->done(sp, res);
2893                         return 0;
2894                 }
2895                 break;
2896
2897         case ABTS_RESP_24XX:
2898         case CTIO_TYPE7:
2899         case CTIO_CRC2:
2900                 return 1;
2901         }
2902 fatal:
2903         ql_log(ql_log_warn, vha, 0x5030,
2904             "Error entry - invalid handle/queue (%04x).\n", que);
2905         return 0;
2906 }
2907
2908 /**
2909  * qla24xx_mbx_completion() - Process mailbox command completions.
2910  * @vha: SCSI driver HA context
2911  * @mb0: Mailbox0 register
2912  */
2913 static void
2914 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2915 {
2916         uint16_t        cnt;
2917         uint32_t        mboxes;
2918         uint16_t __iomem *wptr;
2919         struct qla_hw_data *ha = vha->hw;
2920         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2921
2922         /* Read all mbox registers? */
2923         WARN_ON_ONCE(ha->mbx_count > 32);
2924         mboxes = (1ULL << ha->mbx_count) - 1;
2925         if (!ha->mcp)
2926                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2927         else
2928                 mboxes = ha->mcp->in_mb;
2929
2930         /* Load return mailbox registers. */
2931         ha->flags.mbox_int = 1;
2932         ha->mailbox_out[0] = mb0;
2933         mboxes >>= 1;
2934         wptr = (uint16_t __iomem *)&reg->mailbox1;
2935
2936         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2937                 if (mboxes & BIT_0)
2938                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2939
2940                 mboxes >>= 1;
2941                 wptr++;
2942         }
2943 }
2944
2945 static void
2946 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2947         struct abort_entry_24xx *pkt)
2948 {
2949         const char func[] = "ABT_IOCB";
2950         srb_t *sp;
2951         struct srb_iocb *abt;
2952
2953         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2954         if (!sp)
2955                 return;
2956
2957         abt = &sp->u.iocb_cmd;
2958         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
2959         sp->done(sp, 0);
2960 }
2961
2962 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
2963     struct pt_ls4_request *pkt, struct req_que *req)
2964 {
2965         srb_t *sp;
2966         const char func[] = "LS4_IOCB";
2967         uint16_t comp_status;
2968
2969         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2970         if (!sp)
2971                 return;
2972
2973         comp_status = le16_to_cpu(pkt->status);
2974         sp->done(sp, comp_status);
2975 }
2976
2977 /**
2978  * qla24xx_process_response_queue() - Process response queue entries.
2979  * @vha: SCSI driver HA context
2980  * @rsp: response queue
2981  */
2982 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2983         struct rsp_que *rsp)
2984 {
2985         struct sts_entry_24xx *pkt;
2986         struct qla_hw_data *ha = vha->hw;
2987
2988         if (!ha->flags.fw_started)
2989                 return;
2990
2991         if (rsp->qpair->cpuid != smp_processor_id())
2992                 qla_cpu_update(rsp->qpair, smp_processor_id());
2993
2994         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2995                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2996
2997                 rsp->ring_index++;
2998                 if (rsp->ring_index == rsp->length) {
2999                         rsp->ring_index = 0;
3000                         rsp->ring_ptr = rsp->ring;
3001                 } else {
3002                         rsp->ring_ptr++;
3003                 }
3004
3005                 if (pkt->entry_status != 0) {
3006                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
3007                                 goto process_err;
3008
3009                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3010                         wmb();
3011                         continue;
3012                 }
3013 process_err:
3014
3015                 switch (pkt->entry_type) {
3016                 case STATUS_TYPE:
3017                         qla2x00_status_entry(vha, rsp, pkt);
3018                         break;
3019                 case STATUS_CONT_TYPE:
3020                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
3021                         break;
3022                 case VP_RPT_ID_IOCB_TYPE:
3023                         qla24xx_report_id_acquisition(vha,
3024                             (struct vp_rpt_id_entry_24xx *)pkt);
3025                         break;
3026                 case LOGINOUT_PORT_IOCB_TYPE:
3027                         qla24xx_logio_entry(vha, rsp->req,
3028                             (struct logio_entry_24xx *)pkt);
3029                         break;
3030                 case CT_IOCB_TYPE:
3031                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
3032                         break;
3033                 case ELS_IOCB_TYPE:
3034                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
3035                         break;
3036                 case ABTS_RECV_24XX:
3037                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
3038                             IS_QLA28XX(ha)) {
3039                                 /* ensure that the ATIO queue is empty */
3040                                 qlt_handle_abts_recv(vha, rsp,
3041                                     (response_t *)pkt);
3042                                 break;
3043                         } else {
3044                                 qlt_24xx_process_atio_queue(vha, 1);
3045                         }
3046                         /* fall through */
3047                 case ABTS_RESP_24XX:
3048                 case CTIO_TYPE7:
3049                 case CTIO_CRC2:
3050                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3051                         break;
3052                 case PT_LS4_REQUEST:
3053                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3054                             rsp->req);
3055                         break;
3056                 case NOTIFY_ACK_TYPE:
3057                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3058                                 qlt_response_pkt_all_vps(vha, rsp,
3059                                     (response_t *)pkt);
3060                         else
3061                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3062                                         (struct nack_to_isp *)pkt);
3063                         break;
3064                 case MARKER_TYPE:
3065                         /* Do nothing in this case, this check is to prevent it
3066                          * from falling into default case
3067                          */
3068                         break;
3069                 case ABORT_IOCB_TYPE:
3070                         qla24xx_abort_iocb_entry(vha, rsp->req,
3071                             (struct abort_entry_24xx *)pkt);
3072                         break;
3073                 case MBX_IOCB_TYPE:
3074                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3075                             (struct mbx_24xx_entry *)pkt);
3076                         break;
3077                 case VP_CTRL_IOCB_TYPE:
3078                         qla_ctrlvp_completed(vha, rsp->req,
3079                             (struct vp_ctrl_entry_24xx *)pkt);
3080                         break;
3081                 default:
3082                         /* Type Not Supported. */
3083                         ql_dbg(ql_dbg_async, vha, 0x5042,
3084                             "Received unknown response pkt type %x "
3085                             "entry status=%x.\n",
3086                             pkt->entry_type, pkt->entry_status);
3087                         break;
3088                 }
3089                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3090                 wmb();
3091         }
3092
3093         /* Adjust ring index */
3094         if (IS_P3P_TYPE(ha)) {
3095                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3096
3097                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
3098         } else {
3099                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
3100         }
3101 }
3102
3103 static void
3104 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3105 {
3106         int rval;
3107         uint32_t cnt;
3108         struct qla_hw_data *ha = vha->hw;
3109         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3110
3111         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3112             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3113                 return;
3114
3115         rval = QLA_SUCCESS;
3116         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3117         RD_REG_DWORD(&reg->iobase_addr);
3118         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3119         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3120             rval == QLA_SUCCESS; cnt--) {
3121                 if (cnt) {
3122                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3123                         udelay(10);
3124                 } else
3125                         rval = QLA_FUNCTION_TIMEOUT;
3126         }
3127         if (rval == QLA_SUCCESS)
3128                 goto next_test;
3129
3130         rval = QLA_SUCCESS;
3131         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3132         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3133             rval == QLA_SUCCESS; cnt--) {
3134                 if (cnt) {
3135                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3136                         udelay(10);
3137                 } else
3138                         rval = QLA_FUNCTION_TIMEOUT;
3139         }
3140         if (rval != QLA_SUCCESS)
3141                 goto done;
3142
3143 next_test:
3144         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3145                 ql_log(ql_log_info, vha, 0x504c,
3146                     "Additional code -- 0x55AA.\n");
3147
3148 done:
3149         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3150         RD_REG_DWORD(&reg->iobase_window);
3151 }
3152
3153 /**
3154  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3155  * @irq: interrupt number
3156  * @dev_id: SCSI driver HA context
3157  *
3158  * Called by system whenever the host adapter generates an interrupt.
3159  *
3160  * Returns handled flag.
3161  */
3162 irqreturn_t
3163 qla24xx_intr_handler(int irq, void *dev_id)
3164 {
3165         scsi_qla_host_t *vha;
3166         struct qla_hw_data *ha;
3167         struct device_reg_24xx __iomem *reg;
3168         int             status;
3169         unsigned long   iter;
3170         uint32_t        stat;
3171         uint32_t        hccr;
3172         uint16_t        mb[8];
3173         struct rsp_que *rsp;
3174         unsigned long   flags;
3175         bool process_atio = false;
3176
3177         rsp = (struct rsp_que *) dev_id;
3178         if (!rsp) {
3179                 ql_log(ql_log_info, NULL, 0x5059,
3180                     "%s: NULL response queue pointer.\n", __func__);
3181                 return IRQ_NONE;
3182         }
3183
3184         ha = rsp->hw;
3185         reg = &ha->iobase->isp24;
3186         status = 0;
3187
3188         if (unlikely(pci_channel_offline(ha->pdev)))
3189                 return IRQ_HANDLED;
3190
3191         spin_lock_irqsave(&ha->hardware_lock, flags);
3192         vha = pci_get_drvdata(ha->pdev);
3193         for (iter = 50; iter--; ) {
3194                 stat = RD_REG_DWORD(&reg->host_status);
3195                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3196                         break;
3197                 if (stat & HSRX_RISC_PAUSED) {
3198                         if (unlikely(pci_channel_offline(ha->pdev)))
3199                                 break;
3200
3201                         hccr = RD_REG_DWORD(&reg->hccr);
3202
3203                         ql_log(ql_log_warn, vha, 0x504b,
3204                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3205                             hccr);
3206
3207                         qla2xxx_check_risc_status(vha);
3208
3209                         ha->isp_ops->fw_dump(vha, 1);
3210                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3211                         break;
3212                 } else if ((stat & HSRX_RISC_INT) == 0)
3213                         break;
3214
3215                 switch (stat & 0xff) {
3216                 case INTR_ROM_MB_SUCCESS:
3217                 case INTR_ROM_MB_FAILED:
3218                 case INTR_MB_SUCCESS:
3219                 case INTR_MB_FAILED:
3220                         qla24xx_mbx_completion(vha, MSW(stat));
3221                         status |= MBX_INTERRUPT;
3222
3223                         break;
3224                 case INTR_ASYNC_EVENT:
3225                         mb[0] = MSW(stat);
3226                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3227                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3228                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3229                         qla2x00_async_event(vha, rsp, mb);
3230                         break;
3231                 case INTR_RSP_QUE_UPDATE:
3232                 case INTR_RSP_QUE_UPDATE_83XX:
3233                         qla24xx_process_response_queue(vha, rsp);
3234                         break;
3235                 case INTR_ATIO_QUE_UPDATE_27XX:
3236                 case INTR_ATIO_QUE_UPDATE:
3237                         process_atio = true;
3238                         break;
3239                 case INTR_ATIO_RSP_QUE_UPDATE:
3240                         process_atio = true;
3241                         qla24xx_process_response_queue(vha, rsp);
3242                         break;
3243                 default:
3244                         ql_dbg(ql_dbg_async, vha, 0x504f,
3245                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3246                         break;
3247                 }
3248                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3249                 RD_REG_DWORD_RELAXED(&reg->hccr);
3250                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3251                         ndelay(3500);
3252         }
3253         qla2x00_handle_mbx_completion(ha, status);
3254         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3255
3256         if (process_atio) {
3257                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3258                 qlt_24xx_process_atio_queue(vha, 0);
3259                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3260         }
3261
3262         return IRQ_HANDLED;
3263 }
3264
3265 static irqreturn_t
3266 qla24xx_msix_rsp_q(int irq, void *dev_id)
3267 {
3268         struct qla_hw_data *ha;
3269         struct rsp_que *rsp;
3270         struct device_reg_24xx __iomem *reg;
3271         struct scsi_qla_host *vha;
3272         unsigned long flags;
3273
3274         rsp = (struct rsp_que *) dev_id;
3275         if (!rsp) {
3276                 ql_log(ql_log_info, NULL, 0x505a,
3277                     "%s: NULL response queue pointer.\n", __func__);
3278                 return IRQ_NONE;
3279         }
3280         ha = rsp->hw;
3281         reg = &ha->iobase->isp24;
3282
3283         spin_lock_irqsave(&ha->hardware_lock, flags);
3284
3285         vha = pci_get_drvdata(ha->pdev);
3286         qla24xx_process_response_queue(vha, rsp);
3287         if (!ha->flags.disable_msix_handshake) {
3288                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3289                 RD_REG_DWORD_RELAXED(&reg->hccr);
3290         }
3291         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3292
3293         return IRQ_HANDLED;
3294 }
3295
3296 static irqreturn_t
3297 qla24xx_msix_default(int irq, void *dev_id)
3298 {
3299         scsi_qla_host_t *vha;
3300         struct qla_hw_data *ha;
3301         struct rsp_que *rsp;
3302         struct device_reg_24xx __iomem *reg;
3303         int             status;
3304         uint32_t        stat;
3305         uint32_t        hccr;
3306         uint16_t        mb[8];
3307         unsigned long flags;
3308         bool process_atio = false;
3309
3310         rsp = (struct rsp_que *) dev_id;
3311         if (!rsp) {
3312                 ql_log(ql_log_info, NULL, 0x505c,
3313                     "%s: NULL response queue pointer.\n", __func__);
3314                 return IRQ_NONE;
3315         }
3316         ha = rsp->hw;
3317         reg = &ha->iobase->isp24;
3318         status = 0;
3319
3320         spin_lock_irqsave(&ha->hardware_lock, flags);
3321         vha = pci_get_drvdata(ha->pdev);
3322         do {
3323                 stat = RD_REG_DWORD(&reg->host_status);
3324                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3325                         break;
3326                 if (stat & HSRX_RISC_PAUSED) {
3327                         if (unlikely(pci_channel_offline(ha->pdev)))
3328                                 break;
3329
3330                         hccr = RD_REG_DWORD(&reg->hccr);
3331
3332                         ql_log(ql_log_info, vha, 0x5050,
3333                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3334                             hccr);
3335
3336                         qla2xxx_check_risc_status(vha);
3337
3338                         ha->isp_ops->fw_dump(vha, 1);
3339                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3340                         break;
3341                 } else if ((stat & HSRX_RISC_INT) == 0)
3342                         break;
3343
3344                 switch (stat & 0xff) {
3345                 case INTR_ROM_MB_SUCCESS:
3346                 case INTR_ROM_MB_FAILED:
3347                 case INTR_MB_SUCCESS:
3348                 case INTR_MB_FAILED:
3349                         qla24xx_mbx_completion(vha, MSW(stat));
3350                         status |= MBX_INTERRUPT;
3351
3352                         break;
3353                 case INTR_ASYNC_EVENT:
3354                         mb[0] = MSW(stat);
3355                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3356                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3357                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3358                         qla2x00_async_event(vha, rsp, mb);
3359                         break;
3360                 case INTR_RSP_QUE_UPDATE:
3361                 case INTR_RSP_QUE_UPDATE_83XX:
3362                         qla24xx_process_response_queue(vha, rsp);
3363                         break;
3364                 case INTR_ATIO_QUE_UPDATE_27XX:
3365                 case INTR_ATIO_QUE_UPDATE:
3366                         process_atio = true;
3367                         break;
3368                 case INTR_ATIO_RSP_QUE_UPDATE:
3369                         process_atio = true;
3370                         qla24xx_process_response_queue(vha, rsp);
3371                         break;
3372                 default:
3373                         ql_dbg(ql_dbg_async, vha, 0x5051,
3374                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3375                         break;
3376                 }
3377                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3378         } while (0);
3379         qla2x00_handle_mbx_completion(ha, status);
3380         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3381
3382         if (process_atio) {
3383                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3384                 qlt_24xx_process_atio_queue(vha, 0);
3385                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3386         }
3387
3388         return IRQ_HANDLED;
3389 }
3390
3391 irqreturn_t
3392 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3393 {
3394         struct qla_hw_data *ha;
3395         struct qla_qpair *qpair;
3396         struct device_reg_24xx __iomem *reg;
3397         unsigned long flags;
3398
3399         qpair = dev_id;
3400         if (!qpair) {
3401                 ql_log(ql_log_info, NULL, 0x505b,
3402                     "%s: NULL response queue pointer.\n", __func__);
3403                 return IRQ_NONE;
3404         }
3405         ha = qpair->hw;
3406
3407         /* Clear the interrupt, if enabled, for this response queue */
3408         if (unlikely(!ha->flags.disable_msix_handshake)) {
3409                 reg = &ha->iobase->isp24;
3410                 spin_lock_irqsave(&ha->hardware_lock, flags);
3411                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3412                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3413         }
3414
3415         queue_work(ha->wq, &qpair->q_work);
3416
3417         return IRQ_HANDLED;
3418 }
3419
3420 /* Interrupt handling helpers. */
3421
3422 struct qla_init_msix_entry {
3423         const char *name;
3424         irq_handler_t handler;
3425 };
3426
3427 static const struct qla_init_msix_entry msix_entries[] = {
3428         { "default", qla24xx_msix_default },
3429         { "rsp_q", qla24xx_msix_rsp_q },
3430         { "atio_q", qla83xx_msix_atio_q },
3431         { "qpair_multiq", qla2xxx_msix_rsp_q },
3432 };
3433
3434 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3435         { "qla2xxx (default)", qla82xx_msix_default },
3436         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3437 };
3438
3439 static int
3440 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3441 {
3442         int i, ret;
3443         struct qla_msix_entry *qentry;
3444         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3445         int min_vecs = QLA_BASE_VECTORS;
3446         struct irq_affinity desc = {
3447                 .pre_vectors = QLA_BASE_VECTORS,
3448         };
3449
3450         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3451             IS_ATIO_MSIX_CAPABLE(ha)) {
3452                 desc.pre_vectors++;
3453                 min_vecs++;
3454         }
3455
3456         if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
3457                 /* user wants to control IRQ setting for target mode */
3458                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3459                     ha->msix_count, PCI_IRQ_MSIX);
3460         } else
3461                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3462                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3463                     &desc);
3464
3465         if (ret < 0) {
3466                 ql_log(ql_log_fatal, vha, 0x00c7,
3467                     "MSI-X: Failed to enable support, "
3468                     "giving   up -- %d/%d.\n",
3469                     ha->msix_count, ret);
3470                 goto msix_out;
3471         } else if (ret < ha->msix_count) {
3472                 ql_log(ql_log_warn, vha, 0x00c6,
3473                     "MSI-X: Failed to enable support "
3474                      "with %d vectors, using %d vectors.\n",
3475                     ha->msix_count, ret);
3476                 ha->msix_count = ret;
3477                 /* Recalculate queue values */
3478                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3479                         ha->max_req_queues = ha->msix_count - 1;
3480
3481                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3482                         if (QLA_TGT_MODE_ENABLED())
3483                                 ha->max_req_queues--;
3484
3485                         ha->max_rsp_queues = ha->max_req_queues;
3486
3487                         ha->max_qpairs = ha->max_req_queues - 1;
3488                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3489                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3490                 }
3491         }
3492         vha->irq_offset = desc.pre_vectors;
3493         ha->msix_entries = kcalloc(ha->msix_count,
3494                                    sizeof(struct qla_msix_entry),
3495                                    GFP_KERNEL);
3496         if (!ha->msix_entries) {
3497                 ql_log(ql_log_fatal, vha, 0x00c8,
3498                     "Failed to allocate memory for ha->msix_entries.\n");
3499                 ret = -ENOMEM;
3500                 goto free_irqs;
3501         }
3502         ha->flags.msix_enabled = 1;
3503
3504         for (i = 0; i < ha->msix_count; i++) {
3505                 qentry = &ha->msix_entries[i];
3506                 qentry->vector = pci_irq_vector(ha->pdev, i);
3507                 qentry->entry = i;
3508                 qentry->have_irq = 0;
3509                 qentry->in_use = 0;
3510                 qentry->handle = NULL;
3511         }
3512
3513         /* Enable MSI-X vectors for the base queue */
3514         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3515                 qentry = &ha->msix_entries[i];
3516                 qentry->handle = rsp;
3517                 rsp->msix = qentry;
3518                 scnprintf(qentry->name, sizeof(qentry->name),
3519                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3520                 if (IS_P3P_TYPE(ha))
3521                         ret = request_irq(qentry->vector,
3522                                 qla82xx_msix_entries[i].handler,
3523                                 0, qla82xx_msix_entries[i].name, rsp);
3524                 else
3525                         ret = request_irq(qentry->vector,
3526                                 msix_entries[i].handler,
3527                                 0, qentry->name, rsp);
3528                 if (ret)
3529                         goto msix_register_fail;
3530                 qentry->have_irq = 1;
3531                 qentry->in_use = 1;
3532         }
3533
3534         /*
3535          * If target mode is enable, also request the vector for the ATIO
3536          * queue.
3537          */
3538         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3539             IS_ATIO_MSIX_CAPABLE(ha)) {
3540                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3541                 rsp->msix = qentry;
3542                 qentry->handle = rsp;
3543                 scnprintf(qentry->name, sizeof(qentry->name),
3544                     "qla2xxx%lu_%s", vha->host_no,
3545                     msix_entries[QLA_ATIO_VECTOR].name);
3546                 qentry->in_use = 1;
3547                 ret = request_irq(qentry->vector,
3548                         msix_entries[QLA_ATIO_VECTOR].handler,
3549                         0, qentry->name, rsp);
3550                 qentry->have_irq = 1;
3551         }
3552
3553 msix_register_fail:
3554         if (ret) {
3555                 ql_log(ql_log_fatal, vha, 0x00cb,
3556                     "MSI-X: unable to register handler -- %x/%d.\n",
3557                     qentry->vector, ret);
3558                 qla2x00_free_irqs(vha);
3559                 ha->mqenable = 0;
3560                 goto msix_out;
3561         }
3562
3563         /* Enable MSI-X vector for response queue update for queue 0 */
3564         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
3565                 if (ha->msixbase && ha->mqiobase &&
3566                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3567                      ql2xmqsupport))
3568                         ha->mqenable = 1;
3569         } else
3570                 if (ha->mqiobase &&
3571                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3572                      ql2xmqsupport))
3573                         ha->mqenable = 1;
3574         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3575             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3576             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3577         ql_dbg(ql_dbg_init, vha, 0x0055,
3578             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3579             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3580
3581 msix_out:
3582         return ret;
3583
3584 free_irqs:
3585         pci_free_irq_vectors(ha->pdev);
3586         goto msix_out;
3587 }
3588
3589 int
3590 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3591 {
3592         int ret = QLA_FUNCTION_FAILED;
3593         device_reg_t *reg = ha->iobase;
3594         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3595
3596         /* If possible, enable MSI-X. */
3597         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
3598             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
3599             !IS_QLAFX00(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)))
3600                 goto skip_msi;
3601
3602         if (ql2xenablemsix == 2)
3603                 goto skip_msix;
3604
3605         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3606                 (ha->pdev->subsystem_device == 0x7040 ||
3607                 ha->pdev->subsystem_device == 0x7041 ||
3608                 ha->pdev->subsystem_device == 0x1705)) {
3609                 ql_log(ql_log_warn, vha, 0x0034,
3610                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3611                         ha->pdev->subsystem_vendor,
3612                         ha->pdev->subsystem_device);
3613                 goto skip_msi;
3614         }
3615
3616         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3617                 ql_log(ql_log_warn, vha, 0x0035,
3618                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3619                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3620                 goto skip_msix;
3621         }
3622
3623         ret = qla24xx_enable_msix(ha, rsp);
3624         if (!ret) {
3625                 ql_dbg(ql_dbg_init, vha, 0x0036,
3626                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3627                     ha->chip_revision, ha->fw_attributes);
3628                 goto clear_risc_ints;
3629         }
3630
3631 skip_msix:
3632
3633         ql_log(ql_log_info, vha, 0x0037,
3634             "Falling back-to MSI mode -%d.\n", ret);
3635
3636         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3637             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3638             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3639                 goto skip_msi;
3640
3641         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3642         if (!ret) {
3643                 ql_dbg(ql_dbg_init, vha, 0x0038,
3644                     "MSI: Enabled.\n");
3645                 ha->flags.msi_enabled = 1;
3646         } else
3647                 ql_log(ql_log_warn, vha, 0x0039,
3648                     "Falling back-to INTa mode -- %d.\n", ret);
3649 skip_msi:
3650
3651         /* Skip INTx on ISP82xx. */
3652         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3653                 return QLA_FUNCTION_FAILED;
3654
3655         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3656             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3657             QLA2XXX_DRIVER_NAME, rsp);
3658         if (ret) {
3659                 ql_log(ql_log_warn, vha, 0x003a,
3660                     "Failed to reserve interrupt %d already in use.\n",
3661                     ha->pdev->irq);
3662                 goto fail;
3663         } else if (!ha->flags.msi_enabled) {
3664                 ql_dbg(ql_dbg_init, vha, 0x0125,
3665                     "INTa mode: Enabled.\n");
3666                 ha->flags.mr_intr_valid = 1;
3667         }
3668
3669 clear_risc_ints:
3670         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3671                 goto fail;
3672
3673         spin_lock_irq(&ha->hardware_lock);
3674         WRT_REG_WORD(&reg->isp.semaphore, 0);
3675         spin_unlock_irq(&ha->hardware_lock);
3676
3677 fail:
3678         return ret;
3679 }
3680
3681 void
3682 qla2x00_free_irqs(scsi_qla_host_t *vha)
3683 {
3684         struct qla_hw_data *ha = vha->hw;
3685         struct rsp_que *rsp;
3686         struct qla_msix_entry *qentry;
3687         int i;
3688
3689         /*
3690          * We need to check that ha->rsp_q_map is valid in case we are called
3691          * from a probe failure context.
3692          */
3693         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3694                 goto free_irqs;
3695         rsp = ha->rsp_q_map[0];
3696
3697         if (ha->flags.msix_enabled) {
3698                 for (i = 0; i < ha->msix_count; i++) {
3699                         qentry = &ha->msix_entries[i];
3700                         if (qentry->have_irq) {
3701                                 irq_set_affinity_notifier(qentry->vector, NULL);
3702                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3703                         }
3704                 }
3705                 kfree(ha->msix_entries);
3706                 ha->msix_entries = NULL;
3707                 ha->flags.msix_enabled = 0;
3708                 ql_dbg(ql_dbg_init, vha, 0x0042,
3709                         "Disabled MSI-X.\n");
3710         } else {
3711                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3712         }
3713
3714 free_irqs:
3715         pci_free_irq_vectors(ha->pdev);
3716 }
3717
3718 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3719         struct qla_msix_entry *msix, int vector_type)
3720 {
3721         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3722         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3723         int ret;
3724
3725         scnprintf(msix->name, sizeof(msix->name),
3726             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3727         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3728         if (ret) {
3729                 ql_log(ql_log_fatal, vha, 0x00e6,
3730                     "MSI-X: Unable to register handler -- %x/%d.\n",
3731                     msix->vector, ret);
3732                 return ret;
3733         }
3734         msix->have_irq = 1;
3735         msix->handle = qpair;
3736         return ret;
3737 }