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 /**
  27  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  28  * @irq:
  29  * @dev_id: SCSI driver HA context
  30  *
  31  * Called by system whenever the host adapter generates an interrupt.
  32  *
  33  * Returns handled flag.
  34  */
  35 irqreturn_t
  36 qla2100_intr_handler(int irq, void *dev_id)
  37 {
  38         scsi_qla_host_t *vha;
  39         struct qla_hw_data *ha;
  40         struct device_reg_2xxx __iomem *reg;
  41         int             status;
  42         unsigned long   iter;
  43         uint16_t        hccr;
  44         uint16_t        mb[4];
  45         struct rsp_que *rsp;
  46         unsigned long   flags;
  47
  48         rsp = (struct rsp_que *) dev_id;
  49         if (!rsp) {
  50                 ql_log(ql_log_info, NULL, 0x505d,
  51                     "%s: NULL response queue pointer.\n", __func__);
  52                 return (IRQ_NONE);
  53         }
  54
  55         ha = rsp->hw;
  56         reg = &ha->iobase->isp;
  57         status = 0;
  58
  59         spin_lock_irqsave(&ha->hardware_lock, flags);
  60         vha = pci_get_drvdata(ha->pdev);
  61         for (iter = 50; iter--; ) {
  62                 hccr = RD_REG_WORD(&reg->hccr);
  63                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  64                         break;
  65                 if (hccr & HCCR_RISC_PAUSE) {
  66                         if (pci_channel_offline(ha->pdev))
  67                                 break;
  68
  69                         /*
  70                          * Issue a "HARD" reset in order for the RISC interrupt
  71                          * bit to be cleared.  Schedule a big hammer to get
  72                          * out of the RISC PAUSED state.
  73                          */
  74                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  75                         RD_REG_WORD(&reg->hccr);
  76
  77                         ha->isp_ops->fw_dump(vha, 1);
  78                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  79                         break;
  80                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  81                         break;
  82
  83                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  84                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  85                         RD_REG_WORD(&reg->hccr);
  86
  87                         /* Get mailbox data. */
  88                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  89                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  90                                 qla2x00_mbx_completion(vha, mb[0]);
  91                                 status |= MBX_INTERRUPT;
  92                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  93                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  94                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  95                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  96                                 qla2x00_async_event(vha, rsp, mb);
  97                         } else {
  98                                 /*EMPTY*/
  99                                 ql_dbg(ql_dbg_async, vha, 0x5025,
 100                                     "Unrecognized interrupt type (%d).\n",
 101                                     mb[0]);
 102                         }
 103                         /* Release mailbox registers. */
 104                         WRT_REG_WORD(&reg->semaphore, 0);
 105                         RD_REG_WORD(&reg->semaphore);
 106                 } else {
 107                         qla2x00_process_response_queue(rsp);
 108
 109                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 110                         RD_REG_WORD(&reg->hccr);
 111                 }
 112         }
 113         qla2x00_handle_mbx_completion(ha, status);
 114         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 115
 116         return (IRQ_HANDLED);
 117 }
 118
 119 bool
 120 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 121 {
 122         /* Check for PCI disconnection */
 123         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 124                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 125                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 126                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 127                         /*
 128                          * Schedule this (only once) on the default system
 129                          * workqueue so that all the adapter workqueues and the
 130                          * DPC thread can be shutdown cleanly.
 131                          */
 132                         schedule_work(&vha->hw->board_disable);
 133                 }
 134                 return true;
 135         } else
 136                 return false;
 137 }
 138
 139 bool
 140 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 141 {
 142         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 143 }
 144
 145 /**
 146  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 147  * @irq:
 148  * @dev_id: SCSI driver HA context
 149  *
 150  * Called by system whenever the host adapter generates an interrupt.
 151  *
 152  * Returns handled flag.
 153  */
 154 irqreturn_t
 155 qla2300_intr_handler(int irq, void *dev_id)
 156 {
 157         scsi_qla_host_t *vha;
 158         struct device_reg_2xxx __iomem *reg;
 159         int             status;
 160         unsigned long   iter;
 161         uint32_t        stat;
 162         uint16_t        hccr;
 163         uint16_t        mb[4];
 164         struct rsp_que *rsp;
 165         struct qla_hw_data *ha;
 166         unsigned long   flags;
 167
 168         rsp = (struct rsp_que *) dev_id;
 169         if (!rsp) {
 170                 ql_log(ql_log_info, NULL, 0x5058,
 171                     "%s: NULL response queue pointer.\n", __func__);
 172                 return (IRQ_NONE);
 173         }
 174
 175         ha = rsp->hw;
 176         reg = &ha->iobase->isp;
 177         status = 0;
 178
 179         spin_lock_irqsave(&ha->hardware_lock, flags);
 180         vha = pci_get_drvdata(ha->pdev);
 181         for (iter = 50; iter--; ) {
 182                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 183                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 184                         break;
 185                 if (stat & HSR_RISC_PAUSED) {
 186                         if (unlikely(pci_channel_offline(ha->pdev)))
 187                                 break;
 188
 189                         hccr = RD_REG_WORD(&reg->hccr);
 190
 191                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 192                                 ql_log(ql_log_warn, vha, 0x5026,
 193                                     "Parity error -- HCCR=%x, Dumping "
 194                                     "firmware.\n", hccr);
 195                         else
 196                                 ql_log(ql_log_warn, vha, 0x5027,
 197                                     "RISC paused -- HCCR=%x, Dumping "
 198                                     "firmware.\n", hccr);
 199
 200                         /*
 201                          * Issue a "HARD" reset in order for the RISC
 202                          * interrupt bit to be cleared.  Schedule a big
 203                          * hammer to get out of the RISC PAUSED state.
 204                          */
 205                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 206                         RD_REG_WORD(&reg->hccr);
 207
 208                         ha->isp_ops->fw_dump(vha, 1);
 209                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 210                         break;
 211                 } else if ((stat & HSR_RISC_INT) == 0)
 212                         break;
 213
 214                 switch (stat & 0xff) {
 215                 case 0x1:
 216                 case 0x2:
 217                 case 0x10:
 218                 case 0x11:
 219                         qla2x00_mbx_completion(vha, MSW(stat));
 220                         status |= MBX_INTERRUPT;
 221
 222                         /* Release mailbox registers. */
 223                         WRT_REG_WORD(&reg->semaphore, 0);
 224                         break;
 225                 case 0x12:
 226                         mb[0] = MSW(stat);
 227                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 228                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 229                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 230                         qla2x00_async_event(vha, rsp, mb);
 231                         break;
 232                 case 0x13:
 233                         qla2x00_process_response_queue(rsp);
 234                         break;
 235                 case 0x15:
 236                         mb[0] = MBA_CMPLT_1_16BIT;
 237                         mb[1] = MSW(stat);
 238                         qla2x00_async_event(vha, rsp, mb);
 239                         break;
 240                 case 0x16:
 241                         mb[0] = MBA_SCSI_COMPLETION;
 242                         mb[1] = MSW(stat);
 243                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 244                         qla2x00_async_event(vha, rsp, mb);
 245                         break;
 246                 default:
 247                         ql_dbg(ql_dbg_async, vha, 0x5028,
 248                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 249                         break;
 250                 }
 251                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 252                 RD_REG_WORD_RELAXED(&reg->hccr);
 253         }
 254         qla2x00_handle_mbx_completion(ha, status);
 255         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 256
 257         return (IRQ_HANDLED);
 258 }
 259
 260 /**
 261  * qla2x00_mbx_completion() - Process mailbox command completions.
 262  * @ha: SCSI driver HA context
 263  * @mb0: Mailbox0 register
 264  */
 265 static void
 266 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 267 {
 268         uint16_t        cnt;
 269         uint32_t        mboxes;
 270         uint16_t __iomem *wptr;
 271         struct qla_hw_data *ha = vha->hw;
 272         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 273
 274         /* Read all mbox registers? */
 275         mboxes = (1 << ha->mbx_count) - 1;
 276         if (!ha->mcp)
 277                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 278         else
 279                 mboxes = ha->mcp->in_mb;
 280
 281         /* Load return mailbox registers. */
 282         ha->flags.mbox_int = 1;
 283         ha->mailbox_out[0] = mb0;
 284         mboxes >>= 1;
 285         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 286
 287         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 288                 if (IS_QLA2200(ha) && cnt == 8)
 289                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 290                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 291                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 292                 else if (mboxes & BIT_0)
 293                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 294
 295                 wptr++;
 296                 mboxes >>= 1;
 297         }
 298 }
 299
 300 static void
 301 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 302 {
 303         static char *event[] =
 304                 { "Complete", "Request Notification", "Time Extension" };
 305         int rval;
 306         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 307         struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
 308         uint16_t __iomem *wptr;
 309         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 310
 311         /* Seed data -- mailbox1 -> mailbox7. */
 312         if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
 313                 wptr = (uint16_t __iomem *)&reg24->mailbox1;
 314         else if (IS_QLA8044(vha->hw))
 315                 wptr = (uint16_t __iomem *)&reg82->mailbox_out[1];
 316         else
 317                 return;
 318
 319         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 320                 mb[cnt] = RD_REG_WORD(wptr);
 321
 322         ql_dbg(ql_dbg_async, vha, 0x5021,
 323             "Inter-Driver Communication %s -- "
 324             "%04x %04x %04x %04x %04x %04x %04x.\n",
 325             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 326             mb[4], mb[5], mb[6]);
 327         switch (aen) {
 328         /* Handle IDC Error completion case. */
 329         case MBA_IDC_COMPLETE:
 330                 if (mb[1] >> 15) {
 331                         vha->hw->flags.idc_compl_status = 1;
 332                         if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
 333                                 complete(&vha->hw->dcbx_comp);
 334                 }
 335                 break;
 336
 337         case MBA_IDC_NOTIFY:
 338                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 339                 timeout = (descr >> 8) & 0xf;
 340                 ql_dbg(ql_dbg_async, vha, 0x5022,
 341                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 342                     vha->host_no, event[aen & 0xff], timeout);
 343
 344                 if (!timeout)
 345                         return;
 346                 rval = qla2x00_post_idc_ack_work(vha, mb);
 347                 if (rval != QLA_SUCCESS)
 348                         ql_log(ql_log_warn, vha, 0x5023,
 349                             "IDC failed to post ACK.\n");
 350                 break;
 351         case MBA_IDC_TIME_EXT:
 352                 vha->hw->idc_extend_tmo = descr;
 353                 ql_dbg(ql_dbg_async, vha, 0x5087,
 354                     "%lu Inter-Driver Communication %s -- "
 355                     "Extend timeout by=%d.\n",
 356                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 357                 break;
 358         }
 359 }
 360
 361 #define LS_UNKNOWN      2
 362 const char *
 363 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 364 {
 365         static const char *const link_speeds[] = {
 366                 "1", "2", "?", "4", "8", "16", "32", "10"
 367         };
 368 #define QLA_LAST_SPEED  7
 369
 370         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 371                 return link_speeds[0];
 372         else if (speed == 0x13)
 373                 return link_speeds[QLA_LAST_SPEED];
 374         else if (speed < QLA_LAST_SPEED)
 375                 return link_speeds[speed];
 376         else
 377                 return link_speeds[LS_UNKNOWN];
 378 }
 379
 380 static void
 381 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 382 {
 383         struct qla_hw_data *ha = vha->hw;
 384
 385         /*
 386          * 8200 AEN Interpretation:
 387          * mb[0] = AEN code
 388          * mb[1] = AEN Reason code
 389          * mb[2] = LSW of Peg-Halt Status-1 Register
 390          * mb[6] = MSW of Peg-Halt Status-1 Register
 391          * mb[3] = LSW of Peg-Halt Status-2 register
 392          * mb[7] = MSW of Peg-Halt Status-2 register
 393          * mb[4] = IDC Device-State Register value
 394          * mb[5] = IDC Driver-Presence Register value
 395          */
 396         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 397             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 398             mb[0], mb[1], mb[2], mb[6]);
 399         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 400             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 401             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 402
 403         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 404                                 IDC_HEARTBEAT_FAILURE)) {
 405                 ha->flags.nic_core_hung = 1;
 406                 ql_log(ql_log_warn, vha, 0x5060,
 407                     "83XX: F/W Error Reported: Check if reset required.\n");
 408
 409                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 410                         uint32_t protocol_engine_id, fw_err_code, err_level;
 411
 412                         /*
 413                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 414                          *  - PEG-Halt Status-1 Register:
 415                          *      (LSW = mb[2], MSW = mb[6])
 416                          *      Bits 0-7   = protocol-engine ID
 417                          *      Bits 8-28  = f/w error code
 418                          *      Bits 29-31 = Error-level
 419                          *          Error-level 0x1 = Non-Fatal error
 420                          *          Error-level 0x2 = Recoverable Fatal error
 421                          *          Error-level 0x4 = UnRecoverable Fatal error
 422                          *  - PEG-Halt Status-2 Register:
 423                          *      (LSW = mb[3], MSW = mb[7])
 424                          */
 425                         protocol_engine_id = (mb[2] & 0xff);
 426                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 427                             ((mb[6] & 0x1fff) << 8));
 428                         err_level = ((mb[6] & 0xe000) >> 13);
 429                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 430                             "Register: protocol_engine_id=0x%x "
 431                             "fw_err_code=0x%x err_level=0x%x.\n",
 432                             protocol_engine_id, fw_err_code, err_level);
 433                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 434                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 435                         if (err_level == ERR_LEVEL_NON_FATAL) {
 436                                 ql_log(ql_log_warn, vha, 0x5063,
 437                                     "Not a fatal error, f/w has recovered itself.\n");
 438                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 439                                 ql_log(ql_log_fatal, vha, 0x5064,
 440                                     "Recoverable Fatal error: Chip reset "
 441                                     "required.\n");
 442                                 qla83xx_schedule_work(vha,
 443                                     QLA83XX_NIC_CORE_RESET);
 444                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 445                                 ql_log(ql_log_fatal, vha, 0x5065,
 446                                     "Unrecoverable Fatal error: Set FAILED "
 447                                     "state, reboot required.\n");
 448                                 qla83xx_schedule_work(vha,
 449                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 450                         }
 451                 }
 452
 453                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 454                         uint16_t peg_fw_state, nw_interface_link_up;
 455                         uint16_t nw_interface_signal_detect, sfp_status;
 456                         uint16_t htbt_counter, htbt_monitor_enable;
 457                         uint16_t sfp_additional_info, sfp_multirate;
 458                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 459
 460                         /*
 461                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 462                          *  - PEG-to-FC Status Register:
 463                          *      (LSW = mb[2], MSW = mb[6])
 464                          *      Bits 0-7   = Peg-Firmware state
 465                          *      Bit 8      = N/W Interface Link-up
 466                          *      Bit 9      = N/W Interface signal detected
 467                          *      Bits 10-11 = SFP Status
 468                          *        SFP Status 0x0 = SFP+ transceiver not expected
 469                          *        SFP Status 0x1 = SFP+ transceiver not present
 470                          *        SFP Status 0x2 = SFP+ transceiver invalid
 471                          *        SFP Status 0x3 = SFP+ transceiver present and
 472                          *        valid
 473                          *      Bits 12-14 = Heartbeat Counter
 474                          *      Bit 15     = Heartbeat Monitor Enable
 475                          *      Bits 16-17 = SFP Additional Info
 476                          *        SFP info 0x0 = Unregocnized transceiver for
 477                          *        Ethernet
 478                          *        SFP info 0x1 = SFP+ brand validation failed
 479                          *        SFP info 0x2 = SFP+ speed validation failed
 480                          *        SFP info 0x3 = SFP+ access error
 481                          *      Bit 18     = SFP Multirate
 482                          *      Bit 19     = SFP Tx Fault
 483                          *      Bits 20-22 = Link Speed
 484                          *      Bits 23-27 = Reserved
 485                          *      Bits 28-30 = DCBX Status
 486                          *        DCBX Status 0x0 = DCBX Disabled
 487                          *        DCBX Status 0x1 = DCBX Enabled
 488                          *        DCBX Status 0x2 = DCBX Exchange error
 489                          *      Bit 31     = Reserved
 490                          */
 491                         peg_fw_state = (mb[2] & 0x00ff);
 492                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 493                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 494                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 495                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 496                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 497                         sfp_additional_info = (mb[6] & 0x0003);
 498                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 499                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 500                         link_speed = ((mb[6] & 0x0070) >> 4);
 501                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 502
 503                         ql_log(ql_log_warn, vha, 0x5066,
 504                             "Peg-to-Fc Status Register:\n"
 505                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 506                             "nw_interface_signal_detect=0x%x"
 507                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 508                             nw_interface_link_up, nw_interface_signal_detect,
 509                             sfp_status);
 510                         ql_log(ql_log_warn, vha, 0x5067,
 511                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 512                             "sfp_additional_info=0x%x, sfp_multirate=0x%x.\n ",
 513                             htbt_counter, htbt_monitor_enable,
 514                             sfp_additional_info, sfp_multirate);
 515                         ql_log(ql_log_warn, vha, 0x5068,
 516                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 517                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 518                             dcbx_status);
 519
 520                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 521                 }
 522
 523                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 524                         ql_log(ql_log_warn, vha, 0x5069,
 525                             "Heartbeat Failure encountered, chip reset "
 526                             "required.\n");
 527
 528                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 529                 }
 530         }
 531
 532         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 533                 ql_log(ql_log_info, vha, 0x506a,
 534                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 535                 if (ha->flags.nic_core_reset_owner)
 536                         return;
 537                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 538         }
 539 }
 540
 541 int
 542 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 543 {
 544         struct qla_hw_data *ha = vha->hw;
 545         scsi_qla_host_t *vp;
 546         uint32_t vp_did;
 547         unsigned long flags;
 548         int ret = 0;
 549
 550         if (!ha->num_vhosts)
 551                 return ret;
 552
 553         spin_lock_irqsave(&ha->vport_slock, flags);
 554         list_for_each_entry(vp, &ha->vp_list, list) {
 555                 vp_did = vp->d_id.b24;
 556                 if (vp_did == rscn_entry) {
 557                         ret = 1;
 558                         break;
 559                 }
 560         }
 561         spin_unlock_irqrestore(&ha->vport_slock, flags);
 562
 563         return ret;
 564 }
 565
 566 fc_port_t *
 567 qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
 568 {
 569         fc_port_t *f, *tf;
 570
 571         f = tf = NULL;
 572         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list)
 573                 if (f->loop_id == loop_id)
 574                         return f;
 575         return NULL;
 576 }
 577
 578 fc_port_t *
 579 qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *vha, u8 *wwpn, u8 incl_deleted)
 580 {
 581         fc_port_t *f, *tf;
 582
 583         f = tf = NULL;
 584         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 585                 if (memcmp(f->port_name, wwpn, WWN_SIZE) == 0) {
 586                         if (incl_deleted)
 587                                 return f;
 588                         else if (f->deleted == 0)
 589                                 return f;
 590                 }
 591         }
 592         return NULL;
 593 }
 594
 595 fc_port_t *
 596 qla2x00_find_fcport_by_nportid(scsi_qla_host_t *vha, port_id_t *id,
 597         u8 incl_deleted)
 598 {
 599         fc_port_t *f, *tf;
 600
 601         f = tf = NULL;
 602         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 603                 if (f->d_id.b24 == id->b24) {
 604                         if (incl_deleted)
 605                                 return f;
 606                         else if (f->deleted == 0)
 607                                 return f;
 608                 }
 609         }
 610         return NULL;
 611 }
 612
 613 /**
 614  * qla2x00_async_event() - Process aynchronous events.
 615  * @ha: SCSI driver HA context
 616  * @mb: Mailbox registers (0 - 3)
 617  */
 618 void
 619 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 620 {
 621         uint16_t        handle_cnt;
 622         uint16_t        cnt, mbx;
 623         uint32_t        handles[5];
 624         struct qla_hw_data *ha = vha->hw;
 625         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 626         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 627         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 628         uint32_t        rscn_entry, host_pid;
 629         unsigned long   flags;
 630         fc_port_t       *fcport = NULL;
 631
 632         /* Setup to process RIO completion. */
 633         handle_cnt = 0;
 634         if (IS_CNA_CAPABLE(ha))
 635                 goto skip_rio;
 636         switch (mb[0]) {
 637         case MBA_SCSI_COMPLETION:
 638                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 639                 handle_cnt = 1;
 640                 break;
 641         case MBA_CMPLT_1_16BIT:
 642                 handles[0] = mb[1];
 643                 handle_cnt = 1;
 644                 mb[0] = MBA_SCSI_COMPLETION;
 645                 break;
 646         case MBA_CMPLT_2_16BIT:
 647                 handles[0] = mb[1];
 648                 handles[1] = mb[2];
 649                 handle_cnt = 2;
 650                 mb[0] = MBA_SCSI_COMPLETION;
 651                 break;
 652         case MBA_CMPLT_3_16BIT:
 653                 handles[0] = mb[1];
 654                 handles[1] = mb[2];
 655                 handles[2] = mb[3];
 656                 handle_cnt = 3;
 657                 mb[0] = MBA_SCSI_COMPLETION;
 658                 break;
 659         case MBA_CMPLT_4_16BIT:
 660                 handles[0] = mb[1];
 661                 handles[1] = mb[2];
 662                 handles[2] = mb[3];
 663                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 664                 handle_cnt = 4;
 665                 mb[0] = MBA_SCSI_COMPLETION;
 666                 break;
 667         case MBA_CMPLT_5_16BIT:
 668                 handles[0] = mb[1];
 669                 handles[1] = mb[2];
 670                 handles[2] = mb[3];
 671                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 672                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 673                 handle_cnt = 5;
 674                 mb[0] = MBA_SCSI_COMPLETION;
 675                 break;
 676         case MBA_CMPLT_2_32BIT:
 677                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 678                 handles[1] = le32_to_cpu(
 679                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 680                     RD_MAILBOX_REG(ha, reg, 6));
 681                 handle_cnt = 2;
 682                 mb[0] = MBA_SCSI_COMPLETION;
 683                 break;
 684         default:
 685                 break;
 686         }
 687 skip_rio:
 688         switch (mb[0]) {
 689         case MBA_SCSI_COMPLETION:       /* Fast Post */
 690                 if (!vha->flags.online)
 691                         break;
 692
 693                 for (cnt = 0; cnt < handle_cnt; cnt++)
 694                         qla2x00_process_completed_request(vha, rsp->req,
 695                                 handles[cnt]);
 696                 break;
 697
 698         case MBA_RESET:                 /* Reset */
 699                 ql_dbg(ql_dbg_async, vha, 0x5002,
 700                     "Asynchronous RESET.\n");
 701
 702                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 703                 break;
 704
 705         case MBA_SYSTEM_ERR:            /* System Error */
 706                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) ?
 707                         RD_REG_WORD(&reg24->mailbox7) : 0;
 708                 ql_log(ql_log_warn, vha, 0x5003,
 709                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 710                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 711
 712                 ha->isp_ops->fw_dump(vha, 1);
 713                 ha->flags.fw_init_done = 0;
 714                 QLA_FW_STOPPED(ha);
 715
 716                 if (IS_FWI2_CAPABLE(ha)) {
 717                         if (mb[1] == 0 && mb[2] == 0) {
 718                                 ql_log(ql_log_fatal, vha, 0x5004,
 719                                     "Unrecoverable Hardware Error: adapter "
 720                                     "marked OFFLINE!\n");
 721                                 vha->flags.online = 0;
 722                                 vha->device_flags |= DFLG_DEV_FAILED;
 723                         } else {
 724                                 /* Check to see if MPI timeout occurred */
 725                                 if ((mbx & MBX_3) && (ha->port_no == 0))
 726                                         set_bit(MPI_RESET_NEEDED,
 727                                             &vha->dpc_flags);
 728
 729                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 730                         }
 731                 } else if (mb[1] == 0) {
 732                         ql_log(ql_log_fatal, vha, 0x5005,
 733                             "Unrecoverable Hardware Error: adapter marked "
 734                             "OFFLINE!\n");
 735                         vha->flags.online = 0;
 736                         vha->device_flags |= DFLG_DEV_FAILED;
 737                 } else
 738                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 739                 break;
 740
 741         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 742                 ql_log(ql_log_warn, vha, 0x5006,
 743                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 744
 745                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 746                 break;
 747
 748         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 749                 ql_log(ql_log_warn, vha, 0x5007,
 750                     "ISP Response Transfer Error (%x).\n", mb[1]);
 751
 752                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 753                 break;
 754
 755         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 756                 ql_dbg(ql_dbg_async, vha, 0x5008,
 757                     "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
 758                 break;
 759
 760         case MBA_LOOP_INIT_ERR:
 761                 ql_log(ql_log_warn, vha, 0x5090,
 762                     "LOOP INIT ERROR (%x).\n", mb[1]);
 763                 ha->isp_ops->fw_dump(vha, 1);
 764                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 765                 break;
 766
 767         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 768                 ha->flags.lip_ae = 1;
 769                 ha->flags.n2n_ae = 0;
 770
 771                 ql_dbg(ql_dbg_async, vha, 0x5009,
 772                     "LIP occurred (%x).\n", mb[1]);
 773
 774                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 775                         atomic_set(&vha->loop_state, LOOP_DOWN);
 776                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 777                         qla2x00_mark_all_devices_lost(vha, 1);
 778                 }
 779
 780                 if (vha->vp_idx) {
 781                         atomic_set(&vha->vp_state, VP_FAILED);
 782                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 783                 }
 784
 785                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 786                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 787
 788                 vha->flags.management_server_logged_in = 0;
 789                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 790                 break;
 791
 792         case MBA_LOOP_UP:               /* Loop Up Event */
 793                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 794                         ha->link_data_rate = PORT_SPEED_1GB;
 795                 else
 796                         ha->link_data_rate = mb[1];
 797
 798                 ql_log(ql_log_info, vha, 0x500a,
 799                     "LOOP UP detected (%s Gbps).\n",
 800                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 801
 802                 vha->flags.management_server_logged_in = 0;
 803                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 804
 805                 if (AUTO_DETECT_SFP_SUPPORT(vha)) {
 806                         set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
 807                         qla2xxx_wake_dpc(vha);
 808                 }
 809                 break;
 810
 811         case MBA_LOOP_DOWN:             /* Loop Down Event */
 812                 ha->flags.n2n_ae = 0;
 813                 ha->flags.lip_ae = 0;
 814                 ha->current_topology = 0;
 815
 816                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 817                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 818                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 819                         : mbx;
 820                 ql_log(ql_log_info, vha, 0x500b,
 821                     "LOOP DOWN detected (%x %x %x %x).\n",
 822                     mb[1], mb[2], mb[3], mbx);
 823
 824                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 825                         atomic_set(&vha->loop_state, LOOP_DOWN);
 826                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 827                         /*
 828                          * In case of loop down, restore WWPN from
 829                          * NVRAM in case of FA-WWPN capable ISP
 830                          * Restore for Physical Port only
 831                          */
 832                         if (!vha->vp_idx) {
 833                                 if (ha->flags.fawwpn_enabled) {
 834                                         void *wwpn = ha->init_cb->port_name;
 835                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 836                                         fc_host_port_name(vha->host) =
 837                                             wwn_to_u64(vha->port_name);
 838                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 839                                             vha, 0x00d8, "LOOP DOWN detected,"
 840                                             "restore WWPN %016llx\n",
 841                                             wwn_to_u64(vha->port_name));
 842                                 }
 843
 844                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 845                         }
 846
 847                         vha->device_flags |= DFLG_NO_CABLE;
 848                         qla2x00_mark_all_devices_lost(vha, 1);
 849                 }
 850
 851                 if (vha->vp_idx) {
 852                         atomic_set(&vha->vp_state, VP_FAILED);
 853                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 854                 }
 855
 856                 vha->flags.management_server_logged_in = 0;
 857                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 858                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 859                 break;
 860
 861         case MBA_LIP_RESET:             /* LIP reset occurred */
 862                 ql_dbg(ql_dbg_async, vha, 0x500c,
 863                     "LIP reset occurred (%x).\n", mb[1]);
 864
 865                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 866                         atomic_set(&vha->loop_state, LOOP_DOWN);
 867                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 868                         qla2x00_mark_all_devices_lost(vha, 1);
 869                 }
 870
 871                 if (vha->vp_idx) {
 872                         atomic_set(&vha->vp_state, VP_FAILED);
 873                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 874                 }
 875
 876                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 877
 878                 ha->operating_mode = LOOP;
 879                 vha->flags.management_server_logged_in = 0;
 880                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 881                 break;
 882
 883         /* case MBA_DCBX_COMPLETE: */
 884         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 885                 ha->flags.lip_ae = 0;
 886                 ha->flags.n2n_ae = 1;
 887
 888                 if (IS_QLA2100(ha))
 889                         break;
 890
 891                 if (IS_CNA_CAPABLE(ha)) {
 892                         ql_dbg(ql_dbg_async, vha, 0x500d,
 893                             "DCBX Completed -- %04x %04x %04x.\n",
 894                             mb[1], mb[2], mb[3]);
 895                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 896                                 complete(&ha->dcbx_comp);
 897
 898                 } else
 899                         ql_dbg(ql_dbg_async, vha, 0x500e,
 900                             "Asynchronous P2P MODE received.\n");
 901
 902                 /*
 903                  * Until there's a transition from loop down to loop up, treat
 904                  * this as loop down only.
 905                  */
 906                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 907                         atomic_set(&vha->loop_state, LOOP_DOWN);
 908                         if (!atomic_read(&vha->loop_down_timer))
 909                                 atomic_set(&vha->loop_down_timer,
 910                                     LOOP_DOWN_TIME);
 911                         qla2x00_mark_all_devices_lost(vha, 1);
 912                 }
 913
 914                 if (vha->vp_idx) {
 915                         atomic_set(&vha->vp_state, VP_FAILED);
 916                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 917                 }
 918
 919                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 920                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 921
 922                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 923                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 924
 925                 ha->flags.gpsc_supported = 1;
 926                 vha->flags.management_server_logged_in = 0;
 927                 break;
 928
 929         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 930                 if (IS_QLA2100(ha))
 931                         break;
 932
 933                 ql_dbg(ql_dbg_async, vha, 0x500f,
 934                     "Configuration change detected: value=%x.\n", mb[1]);
 935
 936                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 937                         atomic_set(&vha->loop_state, LOOP_DOWN);
 938                         if (!atomic_read(&vha->loop_down_timer))
 939                                 atomic_set(&vha->loop_down_timer,
 940                                     LOOP_DOWN_TIME);
 941                         qla2x00_mark_all_devices_lost(vha, 1);
 942                 }
 943
 944                 if (vha->vp_idx) {
 945                         atomic_set(&vha->vp_state, VP_FAILED);
 946                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 947                 }
 948
 949                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 950                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 951                 break;
 952
 953         case MBA_PORT_UPDATE:           /* Port database update */
 954                 /*
 955                  * Handle only global and vn-port update events
 956                  *
 957                  * Relevant inputs:
 958                  * mb[1] = N_Port handle of changed port
 959                  * OR 0xffff for global event
 960                  * mb[2] = New login state
 961                  * 7 = Port logged out
 962                  * mb[3] = LSB is vp_idx, 0xff = all vps
 963                  *
 964                  * Skip processing if:
 965                  *       Event is global, vp_idx is NOT all vps,
 966                  *           vp_idx does not match
 967                  *       Event is not global, vp_idx does not match
 968                  */
 969                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 970                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 971                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 972                         break;
 973
 974                 if (mb[2] == 0x7) {
 975                         ql_dbg(ql_dbg_async, vha, 0x5010,
 976                             "Port %s %04x %04x %04x.\n",
 977                             mb[1] == 0xffff ? "unavailable" : "logout",
 978                             mb[1], mb[2], mb[3]);
 979
 980                         if (mb[1] == 0xffff)
 981                                 goto global_port_update;
 982
 983                         if (mb[1] == NPH_SNS_LID(ha)) {
 984                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 985                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 986                                 break;
 987                         }
 988
 989                         /* use handle_cnt for loop id/nport handle */
 990                         if (IS_FWI2_CAPABLE(ha))
 991                                 handle_cnt = NPH_SNS;
 992                         else
 993                                 handle_cnt = SIMPLE_NAME_SERVER;
 994                         if (mb[1] == handle_cnt) {
 995                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 996                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 997                                 break;
 998                         }
 999
1000                         /* Port logout */
1001                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1002                         if (!fcport)
1003                                 break;
1004                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1005                                 break;
1006                         ql_dbg(ql_dbg_async, vha, 0x508a,
1007                             "Marking port lost loopid=%04x portid=%06x.\n",
1008                             fcport->loop_id, fcport->d_id.b24);
1009                         if (qla_ini_mode_enabled(vha)) {
1010                                 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1011                                 fcport->logout_on_delete = 0;
1012                                 qlt_schedule_sess_for_deletion_lock(fcport);
1013                         }
1014                         break;
1015
1016 global_port_update:
1017                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1018                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1019                                 atomic_set(&vha->loop_down_timer,
1020                                     LOOP_DOWN_TIME);
1021                                 vha->device_flags |= DFLG_NO_CABLE;
1022                                 qla2x00_mark_all_devices_lost(vha, 1);
1023                         }
1024
1025                         if (vha->vp_idx) {
1026                                 atomic_set(&vha->vp_state, VP_FAILED);
1027                                 fc_vport_set_state(vha->fc_vport,
1028                                     FC_VPORT_FAILED);
1029                                 qla2x00_mark_all_devices_lost(vha, 1);
1030                         }
1031
1032                         vha->flags.management_server_logged_in = 0;
1033                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1034                         break;
1035                 }
1036
1037                 /*
1038                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1039                  * event etc. earlier indicating loop is down) then process
1040                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1041                  */
1042                 atomic_set(&vha->loop_down_timer, 0);
1043                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1044                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1045                         ql_dbg(ql_dbg_async, vha, 0x5011,
1046                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1047                             mb[1], mb[2], mb[3]);
1048
1049                         qlt_async_event(mb[0], vha, mb);
1050                         break;
1051                 }
1052
1053                 ql_dbg(ql_dbg_async, vha, 0x5012,
1054                     "Port database changed %04x %04x %04x.\n",
1055                     mb[1], mb[2], mb[3]);
1056
1057                 /*
1058                  * Mark all devices as missing so we will login again.
1059                  */
1060                 atomic_set(&vha->loop_state, LOOP_UP);
1061
1062                 qla2x00_mark_all_devices_lost(vha, 1);
1063
1064                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1065                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1066                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1067
1068                 qlt_async_event(mb[0], vha, mb);
1069                 break;
1070
1071         case MBA_RSCN_UPDATE:           /* State Change Registration */
1072                 /* Check if the Vport has issued a SCR */
1073                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1074                         break;
1075                 /* Only handle SCNs for our Vport index. */
1076                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1077                         break;
1078
1079                 ql_dbg(ql_dbg_async, vha, 0x5013,
1080                     "RSCN database changed -- %04x %04x %04x.\n",
1081                     mb[1], mb[2], mb[3]);
1082
1083                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1084                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1085                                 | vha->d_id.b.al_pa;
1086                 if (rscn_entry == host_pid) {
1087                         ql_dbg(ql_dbg_async, vha, 0x5014,
1088                             "Ignoring RSCN update to local host "
1089                             "port ID (%06x).\n", host_pid);
1090                         break;
1091                 }
1092
1093                 /* Ignore reserved bits from RSCN-payload. */
1094                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1095
1096                 /* Skip RSCNs for virtual ports on the same physical port */
1097                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1098                         break;
1099
1100                 atomic_set(&vha->loop_down_timer, 0);
1101                 vha->flags.management_server_logged_in = 0;
1102                 {
1103                         struct event_arg ea;
1104
1105                         memset(&ea, 0, sizeof(ea));
1106                         ea.event = FCME_RSCN;
1107                         ea.id.b24 = rscn_entry;
1108                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1109                         qla2x00_fcport_event_handler(vha, &ea);
1110                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1111                 }
1112                 break;
1113         /* case MBA_RIO_RESPONSE: */
1114         case MBA_ZIO_RESPONSE:
1115                 ql_dbg(ql_dbg_async, vha, 0x5015,
1116                     "[R|Z]IO update completion.\n");
1117
1118                 if (IS_FWI2_CAPABLE(ha))
1119                         qla24xx_process_response_queue(vha, rsp);
1120                 else
1121                         qla2x00_process_response_queue(rsp);
1122                 break;
1123
1124         case MBA_DISCARD_RND_FRAME:
1125                 ql_dbg(ql_dbg_async, vha, 0x5016,
1126                     "Discard RND Frame -- %04x %04x %04x.\n",
1127                     mb[1], mb[2], mb[3]);
1128                 break;
1129
1130         case MBA_TRACE_NOTIFICATION:
1131                 ql_dbg(ql_dbg_async, vha, 0x5017,
1132                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1133                 break;
1134
1135         case MBA_ISP84XX_ALERT:
1136                 ql_dbg(ql_dbg_async, vha, 0x5018,
1137                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1138                     mb[1], mb[2], mb[3]);
1139
1140                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1141                 switch (mb[1]) {
1142                 case A84_PANIC_RECOVERY:
1143                         ql_log(ql_log_info, vha, 0x5019,
1144                             "Alert 84XX: panic recovery %04x %04x.\n",
1145                             mb[2], mb[3]);
1146                         break;
1147                 case A84_OP_LOGIN_COMPLETE:
1148                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1149                         ql_log(ql_log_info, vha, 0x501a,
1150                             "Alert 84XX: firmware version %x.\n",
1151                             ha->cs84xx->op_fw_version);
1152                         break;
1153                 case A84_DIAG_LOGIN_COMPLETE:
1154                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1155                         ql_log(ql_log_info, vha, 0x501b,
1156                             "Alert 84XX: diagnostic firmware version %x.\n",
1157                             ha->cs84xx->diag_fw_version);
1158                         break;
1159                 case A84_GOLD_LOGIN_COMPLETE:
1160                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1161                         ha->cs84xx->fw_update = 1;
1162                         ql_log(ql_log_info, vha, 0x501c,
1163                             "Alert 84XX: gold firmware version %x.\n",
1164                             ha->cs84xx->gold_fw_version);
1165                         break;
1166                 default:
1167                         ql_log(ql_log_warn, vha, 0x501d,
1168                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1169                             mb[1], mb[2], mb[3]);
1170                 }
1171                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1172                 break;
1173         case MBA_DCBX_START:
1174                 ql_dbg(ql_dbg_async, vha, 0x501e,
1175                     "DCBX Started -- %04x %04x %04x.\n",
1176                     mb[1], mb[2], mb[3]);
1177                 break;
1178         case MBA_DCBX_PARAM_UPDATE:
1179                 ql_dbg(ql_dbg_async, vha, 0x501f,
1180                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1181                     mb[1], mb[2], mb[3]);
1182                 break;
1183         case MBA_FCF_CONF_ERR:
1184                 ql_dbg(ql_dbg_async, vha, 0x5020,
1185                     "FCF Configuration Error -- %04x %04x %04x.\n",
1186                     mb[1], mb[2], mb[3]);
1187                 break;
1188         case MBA_IDC_NOTIFY:
1189                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1190                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1191                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1192                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1193                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1194                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1195                                 /*
1196                                  * Extend loop down timer since port is active.
1197                                  */
1198                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1199                                         atomic_set(&vha->loop_down_timer,
1200                                             LOOP_DOWN_TIME);
1201                                 qla2xxx_wake_dpc(vha);
1202                         }
1203                 }
1204         case MBA_IDC_COMPLETE:
1205                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1206                         complete(&ha->lb_portup_comp);
1207                 /* Fallthru */
1208         case MBA_IDC_TIME_EXT:
1209                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1210                     IS_QLA8044(ha))
1211                         qla81xx_idc_event(vha, mb[0], mb[1]);
1212                 break;
1213
1214         case MBA_IDC_AEN:
1215                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1216                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1217                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1218                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1219                 qla83xx_handle_8200_aen(vha, mb);
1220                 break;
1221
1222         case MBA_DPORT_DIAGNOSTICS:
1223                 ql_dbg(ql_dbg_async, vha, 0x5052,
1224                     "D-Port Diagnostics: %04x result=%s\n",
1225                     mb[0],
1226                     mb[1] == 0 ? "start" :
1227                     mb[1] == 1 ? "done (pass)" :
1228                     mb[1] == 2 ? "done (error)" : "other");
1229                 break;
1230
1231         case MBA_TEMPERATURE_ALERT:
1232                 ql_dbg(ql_dbg_async, vha, 0x505e,
1233                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1234                 if (mb[1] == 0x12)
1235                         schedule_work(&ha->board_disable);
1236                 break;
1237
1238         case MBA_TRANS_INSERT:
1239                 ql_dbg(ql_dbg_async, vha, 0x5091,
1240                     "Transceiver Insertion: %04x\n", mb[1]);
1241                 break;
1242
1243         default:
1244                 ql_dbg(ql_dbg_async, vha, 0x5057,
1245                     "Unknown AEN:%04x %04x %04x %04x\n",
1246                     mb[0], mb[1], mb[2], mb[3]);
1247         }
1248
1249         qlt_async_event(mb[0], vha, mb);
1250
1251         if (!vha->vp_idx && ha->num_vhosts)
1252                 qla2x00_alert_all_vps(rsp, mb);
1253 }
1254
1255 /**
1256  * qla2x00_process_completed_request() - Process a Fast Post response.
1257  * @ha: SCSI driver HA context
1258  * @index: SRB index
1259  */
1260 void
1261 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1262                                   struct req_que *req, uint32_t index)
1263 {
1264         srb_t *sp;
1265         struct qla_hw_data *ha = vha->hw;
1266
1267         /* Validate handle. */
1268         if (index >= req->num_outstanding_cmds) {
1269                 ql_log(ql_log_warn, vha, 0x3014,
1270                     "Invalid SCSI command index (%x).\n", index);
1271
1272                 if (IS_P3P_TYPE(ha))
1273                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1274                 else
1275                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1276                 return;
1277         }
1278
1279         sp = req->outstanding_cmds[index];
1280         if (sp) {
1281                 /* Free outstanding command slot. */
1282                 req->outstanding_cmds[index] = NULL;
1283
1284                 /* Save ISP completion status */
1285                 sp->done(sp, DID_OK << 16);
1286         } else {
1287                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
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         }
1294 }
1295
1296 srb_t *
1297 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1298     struct req_que *req, void *iocb)
1299 {
1300         struct qla_hw_data *ha = vha->hw;
1301         sts_entry_t *pkt = iocb;
1302         srb_t *sp = NULL;
1303         uint16_t index;
1304
1305         index = LSW(pkt->handle);
1306         if (index >= req->num_outstanding_cmds) {
1307                 ql_log(ql_log_warn, vha, 0x5031,
1308                            "Invalid command index (%x) type %8ph.\n",
1309                            index, iocb);
1310                 if (IS_P3P_TYPE(ha))
1311                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1312                 else
1313                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1314                 goto done;
1315         }
1316         sp = req->outstanding_cmds[index];
1317         if (!sp) {
1318                 ql_log(ql_log_warn, vha, 0x5032,
1319                     "Invalid completion handle (%x) -- timed-out.\n", index);
1320                 return sp;
1321         }
1322         if (sp->handle != index) {
1323                 ql_log(ql_log_warn, vha, 0x5033,
1324                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1325                 return NULL;
1326         }
1327
1328         req->outstanding_cmds[index] = NULL;
1329
1330 done:
1331         return sp;
1332 }
1333
1334 static void
1335 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1336     struct mbx_entry *mbx)
1337 {
1338         const char func[] = "MBX-IOCB";
1339         const char *type;
1340         fc_port_t *fcport;
1341         srb_t *sp;
1342         struct srb_iocb *lio;
1343         uint16_t *data;
1344         uint16_t status;
1345
1346         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1347         if (!sp)
1348                 return;
1349
1350         lio = &sp->u.iocb_cmd;
1351         type = sp->name;
1352         fcport = sp->fcport;
1353         data = lio->u.logio.data;
1354
1355         data[0] = MBS_COMMAND_ERROR;
1356         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1357             QLA_LOGIO_LOGIN_RETRIED : 0;
1358         if (mbx->entry_status) {
1359                 ql_dbg(ql_dbg_async, vha, 0x5043,
1360                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1361                     "entry-status=%x status=%x state-flag=%x "
1362                     "status-flags=%x.\n", type, sp->handle,
1363                     fcport->d_id.b.domain, fcport->d_id.b.area,
1364                     fcport->d_id.b.al_pa, mbx->entry_status,
1365                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1366                     le16_to_cpu(mbx->status_flags));
1367
1368                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1369                     (uint8_t *)mbx, sizeof(*mbx));
1370
1371                 goto logio_done;
1372         }
1373
1374         status = le16_to_cpu(mbx->status);
1375         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1376             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1377                 status = 0;
1378         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1379                 ql_dbg(ql_dbg_async, vha, 0x5045,
1380                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1381                     type, sp->handle, fcport->d_id.b.domain,
1382                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1383                     le16_to_cpu(mbx->mb1));
1384
1385                 data[0] = MBS_COMMAND_COMPLETE;
1386                 if (sp->type == SRB_LOGIN_CMD) {
1387                         fcport->port_type = FCT_TARGET;
1388                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1389                                 fcport->port_type = FCT_INITIATOR;
1390                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1391                                 fcport->flags |= FCF_FCP2_DEVICE;
1392                 }
1393                 goto logio_done;
1394         }
1395
1396         data[0] = le16_to_cpu(mbx->mb0);
1397         switch (data[0]) {
1398         case MBS_PORT_ID_USED:
1399                 data[1] = le16_to_cpu(mbx->mb1);
1400                 break;
1401         case MBS_LOOP_ID_USED:
1402                 break;
1403         default:
1404                 data[0] = MBS_COMMAND_ERROR;
1405                 break;
1406         }
1407
1408         ql_log(ql_log_warn, vha, 0x5046,
1409             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1410             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1411             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1412             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1413             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1414             le16_to_cpu(mbx->mb7));
1415
1416 logio_done:
1417         sp->done(sp, 0);
1418 }
1419
1420 static void
1421 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1422     struct mbx_24xx_entry *pkt)
1423 {
1424         const char func[] = "MBX-IOCB2";
1425         srb_t *sp;
1426         struct srb_iocb *si;
1427         u16 sz, i;
1428         int res;
1429
1430         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1431         if (!sp)
1432                 return;
1433
1434         si = &sp->u.iocb_cmd;
1435         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1436
1437         for (i = 0; i < sz; i++)
1438                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1439
1440         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1441
1442         sp->done(sp, res);
1443 }
1444
1445 static void
1446 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1447     struct nack_to_isp *pkt)
1448 {
1449         const char func[] = "nack";
1450         srb_t *sp;
1451         int res = 0;
1452
1453         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1454         if (!sp)
1455                 return;
1456
1457         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1458                 res = QLA_FUNCTION_FAILED;
1459
1460         sp->done(sp, res);
1461 }
1462
1463 static void
1464 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1465     sts_entry_t *pkt, int iocb_type)
1466 {
1467         const char func[] = "CT_IOCB";
1468         const char *type;
1469         srb_t *sp;
1470         struct bsg_job *bsg_job;
1471         struct fc_bsg_reply *bsg_reply;
1472         uint16_t comp_status;
1473         int res = 0;
1474
1475         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1476         if (!sp)
1477                 return;
1478
1479         switch (sp->type) {
1480         case SRB_CT_CMD:
1481             bsg_job = sp->u.bsg_job;
1482             bsg_reply = bsg_job->reply;
1483
1484             type = "ct pass-through";
1485
1486             comp_status = le16_to_cpu(pkt->comp_status);
1487
1488             /*
1489              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1490              * fc payload  to the caller
1491              */
1492             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1493             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1494
1495             if (comp_status != CS_COMPLETE) {
1496                     if (comp_status == CS_DATA_UNDERRUN) {
1497                             res = DID_OK << 16;
1498                             bsg_reply->reply_payload_rcv_len =
1499                                 le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1500
1501                             ql_log(ql_log_warn, vha, 0x5048,
1502                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1503                                 type, comp_status,
1504                                 bsg_reply->reply_payload_rcv_len);
1505                     } else {
1506                             ql_log(ql_log_warn, vha, 0x5049,
1507                                 "CT pass-through-%s error comp_status=0x%x.\n",
1508                                 type, comp_status);
1509                             res = DID_ERROR << 16;
1510                             bsg_reply->reply_payload_rcv_len = 0;
1511                     }
1512                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1513                         (uint8_t *)pkt, sizeof(*pkt));
1514             } else {
1515                     res = DID_OK << 16;
1516                     bsg_reply->reply_payload_rcv_len =
1517                         bsg_job->reply_payload.payload_len;
1518                     bsg_job->reply_len = 0;
1519             }
1520             break;
1521         case SRB_CT_PTHRU_CMD:
1522             /*
1523              * borrowing sts_entry_24xx.comp_status.
1524              * same location as ct_entry_24xx.comp_status
1525              */
1526              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1527                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1528                  sp->name);
1529              break;
1530         }
1531
1532         sp->done(sp, res);
1533 }
1534
1535 static void
1536 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1537     struct sts_entry_24xx *pkt, int iocb_type)
1538 {
1539         const char func[] = "ELS_CT_IOCB";
1540         const char *type;
1541         srb_t *sp;
1542         struct bsg_job *bsg_job;
1543         struct fc_bsg_reply *bsg_reply;
1544         uint16_t comp_status;
1545         uint32_t fw_status[3];
1546         uint8_t* fw_sts_ptr;
1547         int res;
1548
1549         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1550         if (!sp)
1551                 return;
1552
1553         type = NULL;
1554         switch (sp->type) {
1555         case SRB_ELS_CMD_RPT:
1556         case SRB_ELS_CMD_HST:
1557                 type = "els";
1558                 break;
1559         case SRB_CT_CMD:
1560                 type = "ct pass-through";
1561                 break;
1562         case SRB_ELS_DCMD:
1563                 type = "Driver ELS logo";
1564                 ql_dbg(ql_dbg_user, vha, 0x5047,
1565                     "Completing %s: (%p) type=%d.\n", type, sp, sp->type);
1566                 sp->done(sp, 0);
1567                 return;
1568         case SRB_CT_PTHRU_CMD:
1569                 /* borrowing sts_entry_24xx.comp_status.
1570                    same location as ct_entry_24xx.comp_status
1571                  */
1572                 res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1573                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1574                         sp->name);
1575                 sp->done(sp, res);
1576                 return;
1577         default:
1578                 ql_dbg(ql_dbg_user, vha, 0x503e,
1579                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1580                 return;
1581         }
1582
1583         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1584         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1585         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1586
1587         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1588          * fc payload  to the caller
1589          */
1590         bsg_job = sp->u.bsg_job;
1591         bsg_reply = bsg_job->reply;
1592         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1593         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1594
1595         if (comp_status != CS_COMPLETE) {
1596                 if (comp_status == CS_DATA_UNDERRUN) {
1597                         res = DID_OK << 16;
1598                         bsg_reply->reply_payload_rcv_len =
1599                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1600
1601                         ql_dbg(ql_dbg_user, vha, 0x503f,
1602                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1603                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1604                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1605                             le16_to_cpu(((struct els_sts_entry_24xx *)
1606                                 pkt)->total_byte_count));
1607                         fw_sts_ptr = ((uint8_t*)scsi_req(bsg_job->req)->sense) +
1608                                 sizeof(struct fc_bsg_reply);
1609                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1610                 }
1611                 else {
1612                         ql_dbg(ql_dbg_user, vha, 0x5040,
1613                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1614                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1615                             type, sp->handle, comp_status,
1616                             le16_to_cpu(((struct els_sts_entry_24xx *)
1617                                 pkt)->error_subcode_1),
1618                             le16_to_cpu(((struct els_sts_entry_24xx *)
1619                                     pkt)->error_subcode_2));
1620                         res = DID_ERROR << 16;
1621                         bsg_reply->reply_payload_rcv_len = 0;
1622                         fw_sts_ptr = ((uint8_t*)scsi_req(bsg_job->req)->sense) +
1623                                         sizeof(struct fc_bsg_reply);
1624                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1625                 }
1626                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1627                                 (uint8_t *)pkt, sizeof(*pkt));
1628         }
1629         else {
1630                 res =  DID_OK << 16;
1631                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1632                 bsg_job->reply_len = 0;
1633         }
1634
1635         sp->done(sp, res);
1636 }
1637
1638 static void
1639 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1640     struct logio_entry_24xx *logio)
1641 {
1642         const char func[] = "LOGIO-IOCB";
1643         const char *type;
1644         fc_port_t *fcport;
1645         srb_t *sp;
1646         struct srb_iocb *lio;
1647         uint16_t *data;
1648         uint32_t iop[2];
1649
1650         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1651         if (!sp)
1652                 return;
1653
1654         lio = &sp->u.iocb_cmd;
1655         type = sp->name;
1656         fcport = sp->fcport;
1657         data = lio->u.logio.data;
1658
1659         data[0] = MBS_COMMAND_ERROR;
1660         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1661                 QLA_LOGIO_LOGIN_RETRIED : 0;
1662         if (logio->entry_status) {
1663                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1664                     "Async-%s error entry - %8phC hdl=%x"
1665                     "portid=%02x%02x%02x entry-status=%x.\n",
1666                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1667                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1668                     logio->entry_status);
1669                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1670                     (uint8_t *)logio, sizeof(*logio));
1671
1672                 goto logio_done;
1673         }
1674
1675         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1676                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1677                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1678                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1679                     fcport->d_id.b.domain,
1680                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1681                     le32_to_cpu(logio->io_parameter[0]));
1682
1683                 vha->hw->exch_starvation = 0;
1684                 data[0] = MBS_COMMAND_COMPLETE;
1685                 if (sp->type != SRB_LOGIN_CMD)
1686                         goto logio_done;
1687
1688                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1689                 if (iop[0] & BIT_4) {
1690                         fcport->port_type = FCT_TARGET;
1691                         if (iop[0] & BIT_8)
1692                                 fcport->flags |= FCF_FCP2_DEVICE;
1693                 } else if (iop[0] & BIT_5)
1694                         fcport->port_type = FCT_INITIATOR;
1695
1696                 if (iop[0] & BIT_7)
1697                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1698
1699                 if (logio->io_parameter[7] || logio->io_parameter[8])
1700                         fcport->supported_classes |= FC_COS_CLASS2;
1701                 if (logio->io_parameter[9] || logio->io_parameter[10])
1702                         fcport->supported_classes |= FC_COS_CLASS3;
1703
1704                 goto logio_done;
1705         }
1706
1707         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1708         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1709         lio->u.logio.iop[0] = iop[0];
1710         lio->u.logio.iop[1] = iop[1];
1711         switch (iop[0]) {
1712         case LSC_SCODE_PORTID_USED:
1713                 data[0] = MBS_PORT_ID_USED;
1714                 data[1] = LSW(iop[1]);
1715                 break;
1716         case LSC_SCODE_NPORT_USED:
1717                 data[0] = MBS_LOOP_ID_USED;
1718                 break;
1719         case LSC_SCODE_CMD_FAILED:
1720                 if (iop[1] == 0x0606) {
1721                         /*
1722                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1723                          * Target side acked.
1724                          */
1725                         data[0] = MBS_COMMAND_COMPLETE;
1726                         goto logio_done;
1727                 }
1728                 data[0] = MBS_COMMAND_ERROR;
1729                 break;
1730         case LSC_SCODE_NOXCB:
1731                 vha->hw->exch_starvation++;
1732                 if (vha->hw->exch_starvation > 5) {
1733                         ql_log(ql_log_warn, vha, 0xd046,
1734                             "Exchange starvation. Resetting RISC\n");
1735
1736                         vha->hw->exch_starvation = 0;
1737
1738                         if (IS_P3P_TYPE(vha->hw))
1739                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1740                         else
1741                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1742                         qla2xxx_wake_dpc(vha);
1743                 }
1744                 /* drop through */
1745         default:
1746                 data[0] = MBS_COMMAND_ERROR;
1747                 break;
1748         }
1749
1750         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1751             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1752             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1753                 sp->handle, fcport->d_id.b.domain,
1754             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1755             le16_to_cpu(logio->comp_status),
1756             le32_to_cpu(logio->io_parameter[0]),
1757             le32_to_cpu(logio->io_parameter[1]));
1758
1759 logio_done:
1760         sp->done(sp, 0);
1761 }
1762
1763 static void
1764 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1765 {
1766         const char func[] = "TMF-IOCB";
1767         const char *type;
1768         fc_port_t *fcport;
1769         srb_t *sp;
1770         struct srb_iocb *iocb;
1771         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1772
1773         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1774         if (!sp)
1775                 return;
1776
1777         iocb = &sp->u.iocb_cmd;
1778         type = sp->name;
1779         fcport = sp->fcport;
1780         iocb->u.tmf.data = QLA_SUCCESS;
1781
1782         if (sts->entry_status) {
1783                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1784                     "Async-%s error - hdl=%x entry-status(%x).\n",
1785                     type, sp->handle, sts->entry_status);
1786                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1787         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1788                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1789                     "Async-%s error - hdl=%x completion status(%x).\n",
1790                     type, sp->handle, sts->comp_status);
1791                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1792         } else if ((le16_to_cpu(sts->scsi_status) &
1793             SS_RESPONSE_INFO_LEN_VALID)) {
1794                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1795                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1796                             "Async-%s error - hdl=%x not enough response(%d).\n",
1797                             type, sp->handle, sts->rsp_data_len);
1798                 } else if (sts->data[3]) {
1799                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1800                             "Async-%s error - hdl=%x response(%x).\n",
1801                             type, sp->handle, sts->data[3]);
1802                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1803                 }
1804         }
1805
1806         if (iocb->u.tmf.data != QLA_SUCCESS)
1807                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1808                     (uint8_t *)sts, sizeof(*sts));
1809
1810         sp->done(sp, 0);
1811 }
1812
1813 static void
1814 qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1815 {
1816         const char func[] = "NVME-IOCB";
1817         fc_port_t *fcport;
1818         srb_t *sp;
1819         struct srb_iocb *iocb;
1820         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1821         uint16_t        state_flags;
1822         struct nvmefc_fcp_req *fd;
1823         uint16_t        ret = 0;
1824         struct srb_iocb *nvme;
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         fcport = sp->fcport;
1832         iocb->u.nvme.comp_status = le16_to_cpu(sts->comp_status);
1833         state_flags  = le16_to_cpu(sts->state_flags);
1834         fd = iocb->u.nvme.desc;
1835         nvme = &sp->u.iocb_cmd;
1836
1837         if (unlikely(nvme->u.nvme.aen_op))
1838                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1839
1840         /*
1841          * State flags: Bit 6 and 0.
1842          * If 0 is set, we don't care about 6.
1843          * both cases resp was dma'd to host buffer
1844          * if both are 0, that is good path case.
1845          * if six is set and 0 is clear, we need to
1846          * copy resp data from status iocb to resp buffer.
1847          */
1848         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1849                 iocb->u.nvme.rsp_pyld_len = 0;
1850         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1851                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1852         } else if (state_flags & SF_NVME_ERSP) {
1853                 uint32_t *inbuf, *outbuf;
1854                 uint16_t iter;
1855
1856                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1857                 outbuf = (uint32_t *)fd->rspaddr;
1858                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1859                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1860                 for (; iter; iter--)
1861                         *outbuf++ = swab32(*inbuf++);
1862         } else { /* unhandled case */
1863             ql_log(ql_log_warn, fcport->vha, 0x503a,
1864                 "NVME-%s error. Unhandled state_flags of %x\n",
1865                 sp->name, state_flags);
1866         }
1867
1868         fd->transferred_length = fd->payload_length -
1869             le32_to_cpu(sts->residual_len);
1870
1871         /*
1872          * If transport error then Failure (HBA rejects request)
1873          * otherwise transport will handle.
1874          */
1875         if (sts->entry_status) {
1876                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1877                     "NVME-%s error - hdl=%x entry-status(%x).\n",
1878                     sp->name, sp->handle, sts->entry_status);
1879                 ret = QLA_FUNCTION_FAILED;
1880         } else  {
1881                 switch (le16_to_cpu(sts->comp_status)) {
1882                         case CS_COMPLETE:
1883                                 ret = 0;
1884                         break;
1885
1886                         case CS_ABORTED:
1887                         case CS_RESET:
1888                         case CS_PORT_UNAVAILABLE:
1889                         case CS_PORT_LOGGED_OUT:
1890                         case CS_PORT_BUSY:
1891                                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1892                                 "NVME-%s ERR Handling - hdl=%x completion status(%x) resid=%x  ox_id=%x\n",
1893                                 sp->name, sp->handle, sts->comp_status,
1894                                 le32_to_cpu(sts->residual_len), sts->ox_id);
1895                                 fd->transferred_length = fd->payload_length;
1896                                 ret = QLA_ABORTED;
1897                         break;
1898
1899                         default:
1900                                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1901                                 "NVME-%s error - hdl=%x completion status(%x) resid=%x  ox_id=%x\n",
1902                                 sp->name, sp->handle, sts->comp_status,
1903                                 le32_to_cpu(sts->residual_len), sts->ox_id);
1904                                 ret = QLA_FUNCTION_FAILED;
1905                                 break;
1906                 }
1907         }
1908         sp->done(sp, ret);
1909 }
1910
1911 /**
1912  * qla2x00_process_response_queue() - Process response queue entries.
1913  * @ha: SCSI driver HA context
1914  */
1915 void
1916 qla2x00_process_response_queue(struct rsp_que *rsp)
1917 {
1918         struct scsi_qla_host *vha;
1919         struct qla_hw_data *ha = rsp->hw;
1920         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1921         sts_entry_t     *pkt;
1922         uint16_t        handle_cnt;
1923         uint16_t        cnt;
1924
1925         vha = pci_get_drvdata(ha->pdev);
1926
1927         if (!vha->flags.online)
1928                 return;
1929
1930         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1931                 pkt = (sts_entry_t *)rsp->ring_ptr;
1932
1933                 rsp->ring_index++;
1934                 if (rsp->ring_index == rsp->length) {
1935                         rsp->ring_index = 0;
1936                         rsp->ring_ptr = rsp->ring;
1937                 } else {
1938                         rsp->ring_ptr++;
1939                 }
1940
1941                 if (pkt->entry_status != 0) {
1942                         qla2x00_error_entry(vha, rsp, pkt);
1943                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1944                         wmb();
1945                         continue;
1946                 }
1947
1948                 switch (pkt->entry_type) {
1949                 case STATUS_TYPE:
1950                         qla2x00_status_entry(vha, rsp, pkt);
1951                         break;
1952                 case STATUS_TYPE_21:
1953                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1954                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1955                                 qla2x00_process_completed_request(vha, rsp->req,
1956                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1957                         }
1958                         break;
1959                 case STATUS_TYPE_22:
1960                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1961                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1962                                 qla2x00_process_completed_request(vha, rsp->req,
1963                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1964                         }
1965                         break;
1966                 case STATUS_CONT_TYPE:
1967                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1968                         break;
1969                 case MBX_IOCB_TYPE:
1970                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1971                             (struct mbx_entry *)pkt);
1972                         break;
1973                 case CT_IOCB_TYPE:
1974                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1975                         break;
1976                 default:
1977                         /* Type Not Supported. */
1978                         ql_log(ql_log_warn, vha, 0x504a,
1979                             "Received unknown response pkt type %x "
1980                             "entry status=%x.\n",
1981                             pkt->entry_type, pkt->entry_status);
1982                         break;
1983                 }
1984                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1985                 wmb();
1986         }
1987
1988         /* Adjust ring index */
1989         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1990 }
1991
1992 static inline void
1993 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1994                      uint32_t sense_len, struct rsp_que *rsp, int res)
1995 {
1996         struct scsi_qla_host *vha = sp->vha;
1997         struct scsi_cmnd *cp = GET_CMD_SP(sp);
1998         uint32_t track_sense_len;
1999
2000         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2001                 sense_len = SCSI_SENSE_BUFFERSIZE;
2002
2003         SET_CMD_SENSE_LEN(sp, sense_len);
2004         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2005         track_sense_len = sense_len;
2006
2007         if (sense_len > par_sense_len)
2008                 sense_len = par_sense_len;
2009
2010         memcpy(cp->sense_buffer, sense_data, sense_len);
2011
2012         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2013         track_sense_len -= sense_len;
2014         SET_CMD_SENSE_LEN(sp, track_sense_len);
2015
2016         if (track_sense_len != 0) {
2017                 rsp->status_srb = sp;
2018                 cp->result = res;
2019         }
2020
2021         if (sense_len) {
2022                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2023                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2024                     sp->vha->host_no, cp->device->id, cp->device->lun,
2025                     cp);
2026                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2027                     cp->sense_buffer, sense_len);
2028         }
2029 }
2030
2031 struct scsi_dif_tuple {
2032         __be16 guard;       /* Checksum */
2033         __be16 app_tag;         /* APPL identifier */
2034         __be32 ref_tag;         /* Target LBA or indirect LBA */
2035 };
2036
2037 /*
2038  * Checks the guard or meta-data for the type of error
2039  * detected by the HBA. In case of errors, we set the
2040  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2041  * to indicate to the kernel that the HBA detected error.
2042  */
2043 static inline int
2044 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2045 {
2046         struct scsi_qla_host *vha = sp->vha;
2047         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2048         uint8_t         *ap = &sts24->data[12];
2049         uint8_t         *ep = &sts24->data[20];
2050         uint32_t        e_ref_tag, a_ref_tag;
2051         uint16_t        e_app_tag, a_app_tag;
2052         uint16_t        e_guard, a_guard;
2053
2054         /*
2055          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2056          * would make guard field appear at offset 2
2057          */
2058         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
2059         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
2060         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
2061         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
2062         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
2063         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
2064
2065         ql_dbg(ql_dbg_io, vha, 0x3023,
2066             "iocb(s) %p Returned STATUS.\n", sts24);
2067
2068         ql_dbg(ql_dbg_io, vha, 0x3024,
2069             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2070             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2071             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2072             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2073             a_app_tag, e_app_tag, a_guard, e_guard);
2074
2075         /*
2076          * Ignore sector if:
2077          * For type     3: ref & app tag is all 'f's
2078          * For type 0,1,2: app tag is all 'f's
2079          */
2080         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2081             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2082              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2083                 uint32_t blocks_done, resid;
2084                 sector_t lba_s = scsi_get_lba(cmd);
2085
2086                 /* 2TB boundary case covered automatically with this */
2087                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2088
2089                 resid = scsi_bufflen(cmd) - (blocks_done *
2090                     cmd->device->sector_size);
2091
2092                 scsi_set_resid(cmd, resid);
2093                 cmd->result = DID_OK << 16;
2094
2095                 /* Update protection tag */
2096                 if (scsi_prot_sg_count(cmd)) {
2097                         uint32_t i, j = 0, k = 0, num_ent;
2098                         struct scatterlist *sg;
2099                         struct t10_pi_tuple *spt;
2100
2101                         /* Patch the corresponding protection tags */
2102                         scsi_for_each_prot_sg(cmd, sg,
2103                             scsi_prot_sg_count(cmd), i) {
2104                                 num_ent = sg_dma_len(sg) / 8;
2105                                 if (k + num_ent < blocks_done) {
2106                                         k += num_ent;
2107                                         continue;
2108                                 }
2109                                 j = blocks_done - k - 1;
2110                                 k = blocks_done;
2111                                 break;
2112                         }
2113
2114                         if (k != blocks_done) {
2115                                 ql_log(ql_log_warn, vha, 0x302f,
2116                                     "unexpected tag values tag:lba=%x:%llx)\n",
2117                                     e_ref_tag, (unsigned long long)lba_s);
2118                                 return 1;
2119                         }
2120
2121                         spt = page_address(sg_page(sg)) + sg->offset;
2122                         spt += j;
2123
2124                         spt->app_tag = T10_PI_APP_ESCAPE;
2125                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2126                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2127                 }
2128
2129                 return 0;
2130         }
2131
2132         /* check guard */
2133         if (e_guard != a_guard) {
2134                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2135                     0x10, 0x1);
2136                 set_driver_byte(cmd, DRIVER_SENSE);
2137                 set_host_byte(cmd, DID_ABORT);
2138                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
2139                 return 1;
2140         }
2141
2142         /* check ref tag */
2143         if (e_ref_tag != a_ref_tag) {
2144                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2145                     0x10, 0x3);
2146                 set_driver_byte(cmd, DRIVER_SENSE);
2147                 set_host_byte(cmd, DID_ABORT);
2148                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
2149                 return 1;
2150         }
2151
2152         /* check appl tag */
2153         if (e_app_tag != a_app_tag) {
2154                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2155                     0x10, 0x2);
2156                 set_driver_byte(cmd, DRIVER_SENSE);
2157                 set_host_byte(cmd, DID_ABORT);
2158                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
2159                 return 1;
2160         }
2161
2162         return 1;
2163 }
2164
2165 static void
2166 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2167                                   struct req_que *req, uint32_t index)
2168 {
2169         struct qla_hw_data *ha = vha->hw;
2170         srb_t *sp;
2171         uint16_t        comp_status;
2172         uint16_t        scsi_status;
2173         uint16_t thread_id;
2174         uint32_t rval = EXT_STATUS_OK;
2175         struct bsg_job *bsg_job = NULL;
2176         struct fc_bsg_request *bsg_request;
2177         struct fc_bsg_reply *bsg_reply;
2178         sts_entry_t *sts;
2179         struct sts_entry_24xx *sts24;
2180         sts = (sts_entry_t *) pkt;
2181         sts24 = (struct sts_entry_24xx *) pkt;
2182
2183         /* Validate handle. */
2184         if (index >= req->num_outstanding_cmds) {
2185                 ql_log(ql_log_warn, vha, 0x70af,
2186                     "Invalid SCSI completion handle 0x%x.\n", index);
2187                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2188                 return;
2189         }
2190
2191         sp = req->outstanding_cmds[index];
2192         if (!sp) {
2193                 ql_log(ql_log_warn, vha, 0x70b0,
2194                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2195                     req->id, index);
2196
2197                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2198                 return;
2199         }
2200
2201         /* Free outstanding command slot. */
2202         req->outstanding_cmds[index] = NULL;
2203         bsg_job = sp->u.bsg_job;
2204         bsg_request = bsg_job->request;
2205         bsg_reply = bsg_job->reply;
2206
2207         if (IS_FWI2_CAPABLE(ha)) {
2208                 comp_status = le16_to_cpu(sts24->comp_status);
2209                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2210         } else {
2211                 comp_status = le16_to_cpu(sts->comp_status);
2212                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2213         }
2214
2215         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2216         switch (comp_status) {
2217         case CS_COMPLETE:
2218                 if (scsi_status == 0) {
2219                         bsg_reply->reply_payload_rcv_len =
2220                                         bsg_job->reply_payload.payload_len;
2221                         vha->qla_stats.input_bytes +=
2222                                 bsg_reply->reply_payload_rcv_len;
2223                         vha->qla_stats.input_requests++;
2224                         rval = EXT_STATUS_OK;
2225                 }
2226                 goto done;
2227
2228         case CS_DATA_OVERRUN:
2229                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2230                     "Command completed with data overrun thread_id=%d\n",
2231                     thread_id);
2232                 rval = EXT_STATUS_DATA_OVERRUN;
2233                 break;
2234
2235         case CS_DATA_UNDERRUN:
2236                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2237                     "Command completed with data underrun thread_id=%d\n",
2238                     thread_id);
2239                 rval = EXT_STATUS_DATA_UNDERRUN;
2240                 break;
2241         case CS_BIDIR_RD_OVERRUN:
2242                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2243                     "Command completed with read data overrun thread_id=%d\n",
2244                     thread_id);
2245                 rval = EXT_STATUS_DATA_OVERRUN;
2246                 break;
2247
2248         case CS_BIDIR_RD_WR_OVERRUN:
2249                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2250                     "Command completed with read and write data overrun "
2251                     "thread_id=%d\n", thread_id);
2252                 rval = EXT_STATUS_DATA_OVERRUN;
2253                 break;
2254
2255         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2256                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2257                     "Command completed with read data over and write data "
2258                     "underrun thread_id=%d\n", thread_id);
2259                 rval = EXT_STATUS_DATA_OVERRUN;
2260                 break;
2261
2262         case CS_BIDIR_RD_UNDERRUN:
2263                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2264                     "Command completed with read data underrun "
2265                     "thread_id=%d\n", thread_id);
2266                 rval = EXT_STATUS_DATA_UNDERRUN;
2267                 break;
2268
2269         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2270                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2271                     "Command completed with read data under and write data "
2272                     "overrun thread_id=%d\n", thread_id);
2273                 rval = EXT_STATUS_DATA_UNDERRUN;
2274                 break;
2275
2276         case CS_BIDIR_RD_WR_UNDERRUN:
2277                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2278                     "Command completed with read and write data underrun "
2279                     "thread_id=%d\n", thread_id);
2280                 rval = EXT_STATUS_DATA_UNDERRUN;
2281                 break;
2282
2283         case CS_BIDIR_DMA:
2284                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2285                     "Command completed with data DMA error thread_id=%d\n",
2286                     thread_id);
2287                 rval = EXT_STATUS_DMA_ERR;
2288                 break;
2289
2290         case CS_TIMEOUT:
2291                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2292                     "Command completed with timeout thread_id=%d\n",
2293                     thread_id);
2294                 rval = EXT_STATUS_TIMEOUT;
2295                 break;
2296         default:
2297                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2298                     "Command completed with completion status=0x%x "
2299                     "thread_id=%d\n", comp_status, thread_id);
2300                 rval = EXT_STATUS_ERR;
2301                 break;
2302         }
2303         bsg_reply->reply_payload_rcv_len = 0;
2304
2305 done:
2306         /* Return the vendor specific reply to API */
2307         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2308         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2309         /* Always return DID_OK, bsg will send the vendor specific response
2310          * in this case only */
2311         sp->done(sp, DID_OK << 6);
2312
2313 }
2314
2315 /**
2316  * qla2x00_status_entry() - Process a Status IOCB entry.
2317  * @ha: SCSI driver HA context
2318  * @pkt: Entry pointer
2319  */
2320 static void
2321 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2322 {
2323         srb_t           *sp;
2324         fc_port_t       *fcport;
2325         struct scsi_cmnd *cp;
2326         sts_entry_t *sts;
2327         struct sts_entry_24xx *sts24;
2328         uint16_t        comp_status;
2329         uint16_t        scsi_status;
2330         uint16_t        ox_id;
2331         uint8_t         lscsi_status;
2332         int32_t         resid;
2333         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2334             fw_resid_len;
2335         uint8_t         *rsp_info, *sense_data;
2336         struct qla_hw_data *ha = vha->hw;
2337         uint32_t handle;
2338         uint16_t que;
2339         struct req_que *req;
2340         int logit = 1;
2341         int res = 0;
2342         uint16_t state_flags = 0;
2343         uint16_t retry_delay = 0;
2344         uint8_t no_logout = 0;
2345
2346         sts = (sts_entry_t *) pkt;
2347         sts24 = (struct sts_entry_24xx *) pkt;
2348         if (IS_FWI2_CAPABLE(ha)) {
2349                 comp_status = le16_to_cpu(sts24->comp_status);
2350                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2351                 state_flags = le16_to_cpu(sts24->state_flags);
2352         } else {
2353                 comp_status = le16_to_cpu(sts->comp_status);
2354                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2355         }
2356         handle = (uint32_t) LSW(sts->handle);
2357         que = MSW(sts->handle);
2358         req = ha->req_q_map[que];
2359
2360         /* Check for invalid queue pointer */
2361         if (req == NULL ||
2362             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2363                 ql_dbg(ql_dbg_io, vha, 0x3059,
2364                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2365                     "que=%u.\n", sts->handle, req, que);
2366                 return;
2367         }
2368
2369         /* Validate handle. */
2370         if (handle < req->num_outstanding_cmds) {
2371                 sp = req->outstanding_cmds[handle];
2372                 if (!sp) {
2373                         ql_dbg(ql_dbg_io, vha, 0x3075,
2374                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2375                             __func__, vha->host_no, sts->handle);
2376                         return;
2377                 }
2378         } else {
2379                 ql_dbg(ql_dbg_io, vha, 0x3017,
2380                     "Invalid status handle, out of range (0x%x).\n",
2381                     sts->handle);
2382
2383                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2384                         if (IS_P3P_TYPE(ha))
2385                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2386                         else
2387                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2388                         qla2xxx_wake_dpc(vha);
2389                 }
2390                 return;
2391         }
2392
2393         if (sp->cmd_type != TYPE_SRB) {
2394                 req->outstanding_cmds[handle] = NULL;
2395                 ql_dbg(ql_dbg_io, vha, 0x3015,
2396                     "Unknown sp->cmd_type %x %p).\n",
2397                     sp->cmd_type, sp);
2398                 return;
2399         }
2400
2401         /* NVME completion. */
2402         if (sp->type == SRB_NVME_CMD) {
2403                 qla24xx_nvme_iocb_entry(vha, req, pkt);
2404                 return;
2405         }
2406
2407         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2408                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2409                 return;
2410         }
2411
2412         /* Task Management completion. */
2413         if (sp->type == SRB_TM_CMD) {
2414                 qla24xx_tm_iocb_entry(vha, req, pkt);
2415                 return;
2416         }
2417
2418         /* Fast path completion. */
2419         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2420                 qla2x00_process_completed_request(vha, req, handle);
2421
2422                 return;
2423         }
2424
2425         req->outstanding_cmds[handle] = NULL;
2426         cp = GET_CMD_SP(sp);
2427         if (cp == NULL) {
2428                 ql_dbg(ql_dbg_io, vha, 0x3018,
2429                     "Command already returned (0x%x/%p).\n",
2430                     sts->handle, sp);
2431
2432                 return;
2433         }
2434
2435         lscsi_status = scsi_status & STATUS_MASK;
2436
2437         fcport = sp->fcport;
2438
2439         ox_id = 0;
2440         sense_len = par_sense_len = rsp_info_len = resid_len =
2441             fw_resid_len = 0;
2442         if (IS_FWI2_CAPABLE(ha)) {
2443                 if (scsi_status & SS_SENSE_LEN_VALID)
2444                         sense_len = le32_to_cpu(sts24->sense_len);
2445                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2446                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2447                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2448                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2449                 if (comp_status == CS_DATA_UNDERRUN)
2450                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2451                 rsp_info = sts24->data;
2452                 sense_data = sts24->data;
2453                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2454                 ox_id = le16_to_cpu(sts24->ox_id);
2455                 par_sense_len = sizeof(sts24->data);
2456                 /* Valid values of the retry delay timer are 0x1-0xffef */
2457                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1)
2458                         retry_delay = sts24->retry_delay;
2459         } else {
2460                 if (scsi_status & SS_SENSE_LEN_VALID)
2461                         sense_len = le16_to_cpu(sts->req_sense_length);
2462                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2463                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2464                 resid_len = le32_to_cpu(sts->residual_length);
2465                 rsp_info = sts->rsp_info;
2466                 sense_data = sts->req_sense_data;
2467                 par_sense_len = sizeof(sts->req_sense_data);
2468         }
2469
2470         /* Check for any FCP transport errors. */
2471         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2472                 /* Sense data lies beyond any FCP RESPONSE data. */
2473                 if (IS_FWI2_CAPABLE(ha)) {
2474                         sense_data += rsp_info_len;
2475                         par_sense_len -= rsp_info_len;
2476                 }
2477                 if (rsp_info_len > 3 && rsp_info[3]) {
2478                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2479                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2480                             rsp_info_len, rsp_info[3]);
2481
2482                         res = DID_BUS_BUSY << 16;
2483                         goto out;
2484                 }
2485         }
2486
2487         /* Check for overrun. */
2488         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2489             scsi_status & SS_RESIDUAL_OVER)
2490                 comp_status = CS_DATA_OVERRUN;
2491
2492         /*
2493          * Check retry_delay_timer value if we receive a busy or
2494          * queue full.
2495          */
2496         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2497             lscsi_status == SAM_STAT_BUSY)
2498                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2499
2500         /*
2501          * Based on Host and scsi status generate status code for Linux
2502          */
2503         switch (comp_status) {
2504         case CS_COMPLETE:
2505         case CS_QUEUE_FULL:
2506                 if (scsi_status == 0) {
2507                         res = DID_OK << 16;
2508                         break;
2509                 }
2510                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2511                         resid = resid_len;
2512                         scsi_set_resid(cp, resid);
2513
2514                         if (!lscsi_status &&
2515                             ((unsigned)(scsi_bufflen(cp) - resid) <
2516                              cp->underflow)) {
2517                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2518                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2519                                     resid, scsi_bufflen(cp));
2520
2521                                 res = DID_ERROR << 16;
2522                                 break;
2523                         }
2524                 }
2525                 res = DID_OK << 16 | lscsi_status;
2526
2527                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2528                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2529                             "QUEUE FULL detected.\n");
2530                         break;
2531                 }
2532                 logit = 0;
2533                 if (lscsi_status != SS_CHECK_CONDITION)
2534                         break;
2535
2536                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2537                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2538                         break;
2539
2540                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2541                     rsp, res);
2542                 break;
2543
2544         case CS_DATA_UNDERRUN:
2545                 /* Use F/W calculated residual length. */
2546                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2547                 scsi_set_resid(cp, resid);
2548                 if (scsi_status & SS_RESIDUAL_UNDER) {
2549                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2550                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2551                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2552                                     resid, scsi_bufflen(cp));
2553
2554                                 res = DID_ERROR << 16 | lscsi_status;
2555                                 goto check_scsi_status;
2556                         }
2557
2558                         if (!lscsi_status &&
2559                             ((unsigned)(scsi_bufflen(cp) - resid) <
2560                             cp->underflow)) {
2561                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2562                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2563                                     resid, scsi_bufflen(cp));
2564
2565                                 res = DID_ERROR << 16;
2566                                 break;
2567                         }
2568                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2569                             lscsi_status != SAM_STAT_BUSY) {
2570                         /*
2571                          * scsi status of task set and busy are considered to be
2572                          * task not completed.
2573                          */
2574
2575                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2576                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2577                             resid, scsi_bufflen(cp));
2578
2579                         res = DID_ERROR << 16 | lscsi_status;
2580                         goto check_scsi_status;
2581                 } else {
2582                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2583                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2584                             scsi_status, lscsi_status);
2585                 }
2586
2587                 res = DID_OK << 16 | lscsi_status;
2588                 logit = 0;
2589
2590 check_scsi_status:
2591                 /*
2592                  * Check to see if SCSI Status is non zero. If so report SCSI
2593                  * Status.
2594                  */
2595                 if (lscsi_status != 0) {
2596                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2597                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2598                                     "QUEUE FULL detected.\n");
2599                                 logit = 1;
2600                                 break;
2601                         }
2602                         if (lscsi_status != SS_CHECK_CONDITION)
2603                                 break;
2604
2605                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2606                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2607                                 break;
2608
2609                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2610                             sense_len, rsp, res);
2611                 }
2612                 break;
2613
2614         case CS_PORT_LOGGED_OUT:
2615                 no_logout = 1;
2616         case CS_PORT_CONFIG_CHG:
2617         case CS_PORT_BUSY:
2618         case CS_INCOMPLETE:
2619         case CS_PORT_UNAVAILABLE:
2620         case CS_TIMEOUT:
2621         case CS_RESET:
2622
2623                 /*
2624                  * We are going to have the fc class block the rport
2625                  * while we try to recover so instruct the mid layer
2626                  * to requeue until the class decides how to handle this.
2627                  */
2628                 res = DID_TRANSPORT_DISRUPTED << 16;
2629
2630                 if (comp_status == CS_TIMEOUT) {
2631                         if (IS_FWI2_CAPABLE(ha))
2632                                 break;
2633                         else if ((le16_to_cpu(sts->status_flags) &
2634                             SF_LOGOUT_SENT) == 0)
2635                                 break;
2636                 }
2637
2638                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2639                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2640                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2641                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2642                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2643                                 port_state_str[atomic_read(&fcport->state)],
2644                                 comp_status);
2645
2646                         if (no_logout)
2647                                 fcport->logout_on_delete = 0;
2648
2649                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2650                         qlt_schedule_sess_for_deletion_lock(fcport);
2651                 }
2652
2653                 break;
2654
2655         case CS_ABORTED:
2656                 res = DID_RESET << 16;
2657                 break;
2658
2659         case CS_DIF_ERROR:
2660                 logit = qla2x00_handle_dif_error(sp, sts24);
2661                 res = cp->result;
2662                 break;
2663
2664         case CS_TRANSPORT:
2665                 res = DID_ERROR << 16;
2666
2667                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2668                         break;
2669
2670                 if (state_flags & BIT_4)
2671                         scmd_printk(KERN_WARNING, cp,
2672                             "Unsupported device '%s' found.\n",
2673                             cp->device->vendor);
2674                 break;
2675
2676         default:
2677                 res = DID_ERROR << 16;
2678                 break;
2679         }
2680
2681 out:
2682         if (logit)
2683                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2684                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2685                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2686                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2687                     comp_status, scsi_status, res, vha->host_no,
2688                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2689                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2690                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2691                     resid_len, fw_resid_len, sp, cp);
2692
2693         if (rsp->status_srb == NULL)
2694                 sp->done(sp, res);
2695 }
2696
2697 /**
2698  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2699  * @ha: SCSI driver HA context
2700  * @pkt: Entry pointer
2701  *
2702  * Extended sense data.
2703  */
2704 static void
2705 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2706 {
2707         uint8_t sense_sz = 0;
2708         struct qla_hw_data *ha = rsp->hw;
2709         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2710         srb_t *sp = rsp->status_srb;
2711         struct scsi_cmnd *cp;
2712         uint32_t sense_len;
2713         uint8_t *sense_ptr;
2714
2715         if (!sp || !GET_CMD_SENSE_LEN(sp))
2716                 return;
2717
2718         sense_len = GET_CMD_SENSE_LEN(sp);
2719         sense_ptr = GET_CMD_SENSE_PTR(sp);
2720
2721         cp = GET_CMD_SP(sp);
2722         if (cp == NULL) {
2723                 ql_log(ql_log_warn, vha, 0x3025,
2724                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2725
2726                 rsp->status_srb = NULL;
2727                 return;
2728         }
2729
2730         if (sense_len > sizeof(pkt->data))
2731                 sense_sz = sizeof(pkt->data);
2732         else
2733                 sense_sz = sense_len;
2734
2735         /* Move sense data. */
2736         if (IS_FWI2_CAPABLE(ha))
2737                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2738         memcpy(sense_ptr, pkt->data, sense_sz);
2739         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2740                 sense_ptr, sense_sz);
2741
2742         sense_len -= sense_sz;
2743         sense_ptr += sense_sz;
2744
2745         SET_CMD_SENSE_PTR(sp, sense_ptr);
2746         SET_CMD_SENSE_LEN(sp, sense_len);
2747
2748         /* Place command on done queue. */
2749         if (sense_len == 0) {
2750                 rsp->status_srb = NULL;
2751                 sp->done(sp, cp->result);
2752         }
2753 }
2754
2755 /**
2756  * qla2x00_error_entry() - Process an error entry.
2757  * @ha: SCSI driver HA context
2758  * @pkt: Entry pointer
2759  * return : 1=allow further error analysis. 0=no additional error analysis.
2760  */
2761 static int
2762 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2763 {
2764         srb_t *sp;
2765         struct qla_hw_data *ha = vha->hw;
2766         const char func[] = "ERROR-IOCB";
2767         uint16_t que = MSW(pkt->handle);
2768         struct req_que *req = NULL;
2769         int res = DID_ERROR << 16;
2770
2771         ql_dbg(ql_dbg_async, vha, 0x502a,
2772             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2773             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2774
2775         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2776                 goto fatal;
2777
2778         req = ha->req_q_map[que];
2779
2780         if (pkt->entry_status & RF_BUSY)
2781                 res = DID_BUS_BUSY << 16;
2782
2783         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2784                 return 0;
2785
2786         switch (pkt->entry_type) {
2787         case NOTIFY_ACK_TYPE:
2788         case STATUS_TYPE:
2789         case STATUS_CONT_TYPE:
2790         case LOGINOUT_PORT_IOCB_TYPE:
2791         case CT_IOCB_TYPE:
2792         case ELS_IOCB_TYPE:
2793         case ABORT_IOCB_TYPE:
2794         case MBX_IOCB_TYPE:
2795                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2796                 if (sp) {
2797                         sp->done(sp, res);
2798                         return 0;
2799                 }
2800                 break;
2801
2802         case ABTS_RESP_24XX:
2803         case CTIO_TYPE7:
2804         case CTIO_CRC2:
2805         default:
2806                 return 1;
2807         }
2808 fatal:
2809         ql_log(ql_log_warn, vha, 0x5030,
2810             "Error entry - invalid handle/queue (%04x).\n", que);
2811         return 0;
2812 }
2813
2814 /**
2815  * qla24xx_mbx_completion() - Process mailbox command completions.
2816  * @ha: SCSI driver HA context
2817  * @mb0: Mailbox0 register
2818  */
2819 static void
2820 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2821 {
2822         uint16_t        cnt;
2823         uint32_t        mboxes;
2824         uint16_t __iomem *wptr;
2825         struct qla_hw_data *ha = vha->hw;
2826         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2827
2828         /* Read all mbox registers? */
2829         mboxes = (1 << ha->mbx_count) - 1;
2830         if (!ha->mcp)
2831                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2832         else
2833                 mboxes = ha->mcp->in_mb;
2834
2835         /* Load return mailbox registers. */
2836         ha->flags.mbox_int = 1;
2837         ha->mailbox_out[0] = mb0;
2838         mboxes >>= 1;
2839         wptr = (uint16_t __iomem *)&reg->mailbox1;
2840
2841         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2842                 if (mboxes & BIT_0)
2843                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2844
2845                 mboxes >>= 1;
2846                 wptr++;
2847         }
2848 }
2849
2850 static void
2851 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2852         struct abort_entry_24xx *pkt)
2853 {
2854         const char func[] = "ABT_IOCB";
2855         srb_t *sp;
2856         struct srb_iocb *abt;
2857
2858         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2859         if (!sp)
2860                 return;
2861
2862         abt = &sp->u.iocb_cmd;
2863         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
2864         sp->done(sp, 0);
2865 }
2866
2867 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
2868     struct pt_ls4_request *pkt, struct req_que *req)
2869 {
2870         srb_t *sp;
2871         const char func[] = "LS4_IOCB";
2872         uint16_t comp_status;
2873
2874         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2875         if (!sp)
2876                 return;
2877
2878         comp_status = le16_to_cpu(pkt->status);
2879         sp->done(sp, comp_status);
2880 }
2881
2882 /**
2883  * qla24xx_process_response_queue() - Process response queue entries.
2884  * @ha: SCSI driver HA context
2885  */
2886 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2887         struct rsp_que *rsp)
2888 {
2889         struct sts_entry_24xx *pkt;
2890         struct qla_hw_data *ha = vha->hw;
2891
2892         if (!ha->flags.fw_started)
2893                 return;
2894
2895         if (rsp->qpair->cpuid != smp_processor_id())
2896                 qla_cpu_update(rsp->qpair, smp_processor_id());
2897
2898         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2899                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2900
2901                 rsp->ring_index++;
2902                 if (rsp->ring_index == rsp->length) {
2903                         rsp->ring_index = 0;
2904                         rsp->ring_ptr = rsp->ring;
2905                 } else {
2906                         rsp->ring_ptr++;
2907                 }
2908
2909                 if (pkt->entry_status != 0) {
2910                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
2911                                 goto process_err;
2912
2913                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2914                         wmb();
2915                         continue;
2916                 }
2917 process_err:
2918
2919                 switch (pkt->entry_type) {
2920                 case STATUS_TYPE:
2921                         qla2x00_status_entry(vha, rsp, pkt);
2922                         break;
2923                 case STATUS_CONT_TYPE:
2924                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2925                         break;
2926                 case VP_RPT_ID_IOCB_TYPE:
2927                         qla24xx_report_id_acquisition(vha,
2928                             (struct vp_rpt_id_entry_24xx *)pkt);
2929                         break;
2930                 case LOGINOUT_PORT_IOCB_TYPE:
2931                         qla24xx_logio_entry(vha, rsp->req,
2932                             (struct logio_entry_24xx *)pkt);
2933                         break;
2934                 case CT_IOCB_TYPE:
2935                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2936                         break;
2937                 case ELS_IOCB_TYPE:
2938                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2939                         break;
2940                 case ABTS_RECV_24XX:
2941                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
2942                                 /* ensure that the ATIO queue is empty */
2943                                 qlt_handle_abts_recv(vha, rsp,
2944                                     (response_t *)pkt);
2945                                 break;
2946                         } else {
2947                                 /* drop through */
2948                                 qlt_24xx_process_atio_queue(vha, 1);
2949                         }
2950                 case ABTS_RESP_24XX:
2951                 case CTIO_TYPE7:
2952                 case CTIO_CRC2:
2953                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
2954                         break;
2955                 case PT_LS4_REQUEST:
2956                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
2957                             rsp->req);
2958                         break;
2959                 case NOTIFY_ACK_TYPE:
2960                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
2961                                 qlt_response_pkt_all_vps(vha, rsp,
2962                                     (response_t *)pkt);
2963                         else
2964                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
2965                                         (struct nack_to_isp *)pkt);
2966                         break;
2967                 case MARKER_TYPE:
2968                         /* Do nothing in this case, this check is to prevent it
2969                          * from falling into default case
2970                          */
2971                         break;
2972                 case ABORT_IOCB_TYPE:
2973                         qla24xx_abort_iocb_entry(vha, rsp->req,
2974                             (struct abort_entry_24xx *)pkt);
2975                         break;
2976                 case MBX_IOCB_TYPE:
2977                         qla24xx_mbx_iocb_entry(vha, rsp->req,
2978                             (struct mbx_24xx_entry *)pkt);
2979                         break;
2980                 default:
2981                         /* Type Not Supported. */
2982                         ql_dbg(ql_dbg_async, vha, 0x5042,
2983                             "Received unknown response pkt type %x "
2984                             "entry status=%x.\n",
2985                             pkt->entry_type, pkt->entry_status);
2986                         break;
2987                 }
2988                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2989                 wmb();
2990         }
2991
2992         /* Adjust ring index */
2993         if (IS_P3P_TYPE(ha)) {
2994                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2995                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2996         } else {
2997                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2998         }
2999 }
3000
3001 static void
3002 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3003 {
3004         int rval;
3005         uint32_t cnt;
3006         struct qla_hw_data *ha = vha->hw;
3007         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3008
3009         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3010             !IS_QLA27XX(ha))
3011                 return;
3012
3013         rval = QLA_SUCCESS;
3014         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3015         RD_REG_DWORD(&reg->iobase_addr);
3016         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3017         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3018             rval == QLA_SUCCESS; cnt--) {
3019                 if (cnt) {
3020                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3021                         udelay(10);
3022                 } else
3023                         rval = QLA_FUNCTION_TIMEOUT;
3024         }
3025         if (rval == QLA_SUCCESS)
3026                 goto next_test;
3027
3028         rval = QLA_SUCCESS;
3029         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3030         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3031             rval == QLA_SUCCESS; cnt--) {
3032                 if (cnt) {
3033                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3034                         udelay(10);
3035                 } else
3036                         rval = QLA_FUNCTION_TIMEOUT;
3037         }
3038         if (rval != QLA_SUCCESS)
3039                 goto done;
3040
3041 next_test:
3042         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3043                 ql_log(ql_log_info, vha, 0x504c,
3044                     "Additional code -- 0x55AA.\n");
3045
3046 done:
3047         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3048         RD_REG_DWORD(&reg->iobase_window);
3049 }
3050
3051 /**
3052  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3053  * @irq:
3054  * @dev_id: SCSI driver HA context
3055  *
3056  * Called by system whenever the host adapter generates an interrupt.
3057  *
3058  * Returns handled flag.
3059  */
3060 irqreturn_t
3061 qla24xx_intr_handler(int irq, void *dev_id)
3062 {
3063         scsi_qla_host_t *vha;
3064         struct qla_hw_data *ha;
3065         struct device_reg_24xx __iomem *reg;
3066         int             status;
3067         unsigned long   iter;
3068         uint32_t        stat;
3069         uint32_t        hccr;
3070         uint16_t        mb[8];
3071         struct rsp_que *rsp;
3072         unsigned long   flags;
3073
3074         rsp = (struct rsp_que *) dev_id;
3075         if (!rsp) {
3076                 ql_log(ql_log_info, NULL, 0x5059,
3077                     "%s: NULL response queue pointer.\n", __func__);
3078                 return IRQ_NONE;
3079         }
3080
3081         ha = rsp->hw;
3082         reg = &ha->iobase->isp24;
3083         status = 0;
3084
3085         if (unlikely(pci_channel_offline(ha->pdev)))
3086                 return IRQ_HANDLED;
3087
3088         spin_lock_irqsave(&ha->hardware_lock, flags);
3089         vha = pci_get_drvdata(ha->pdev);
3090         for (iter = 50; iter--; ) {
3091                 stat = RD_REG_DWORD(&reg->host_status);
3092                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3093                         break;
3094                 if (stat & HSRX_RISC_PAUSED) {
3095                         if (unlikely(pci_channel_offline(ha->pdev)))
3096                                 break;
3097
3098                         hccr = RD_REG_DWORD(&reg->hccr);
3099
3100                         ql_log(ql_log_warn, vha, 0x504b,
3101                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3102                             hccr);
3103
3104                         qla2xxx_check_risc_status(vha);
3105
3106                         ha->isp_ops->fw_dump(vha, 1);
3107                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3108                         break;
3109                 } else if ((stat & HSRX_RISC_INT) == 0)
3110                         break;
3111
3112                 switch (stat & 0xff) {
3113                 case INTR_ROM_MB_SUCCESS:
3114                 case INTR_ROM_MB_FAILED:
3115                 case INTR_MB_SUCCESS:
3116                 case INTR_MB_FAILED:
3117                         qla24xx_mbx_completion(vha, MSW(stat));
3118                         status |= MBX_INTERRUPT;
3119
3120                         break;
3121                 case INTR_ASYNC_EVENT:
3122                         mb[0] = MSW(stat);
3123                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3124                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3125                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3126                         qla2x00_async_event(vha, rsp, mb);
3127                         break;
3128                 case INTR_RSP_QUE_UPDATE:
3129                 case INTR_RSP_QUE_UPDATE_83XX:
3130                         qla24xx_process_response_queue(vha, rsp);
3131                         break;
3132                 case INTR_ATIO_QUE_UPDATE:{
3133                         unsigned long flags2;
3134                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3135                         qlt_24xx_process_atio_queue(vha, 1);
3136                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3137                         break;
3138                 }
3139                 case INTR_ATIO_RSP_QUE_UPDATE: {
3140                         unsigned long flags2;
3141                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3142                         qlt_24xx_process_atio_queue(vha, 1);
3143                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3144
3145                         qla24xx_process_response_queue(vha, rsp);
3146                         break;
3147                 }
3148                 default:
3149                         ql_dbg(ql_dbg_async, vha, 0x504f,
3150                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3151                         break;
3152                 }
3153                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3154                 RD_REG_DWORD_RELAXED(&reg->hccr);
3155                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3156                         ndelay(3500);
3157         }
3158         qla2x00_handle_mbx_completion(ha, status);
3159         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3160
3161         return IRQ_HANDLED;
3162 }
3163
3164 static irqreturn_t
3165 qla24xx_msix_rsp_q(int irq, void *dev_id)
3166 {
3167         struct qla_hw_data *ha;
3168         struct rsp_que *rsp;
3169         struct device_reg_24xx __iomem *reg;
3170         struct scsi_qla_host *vha;
3171         unsigned long flags;
3172
3173         rsp = (struct rsp_que *) dev_id;
3174         if (!rsp) {
3175                 ql_log(ql_log_info, NULL, 0x505a,
3176                     "%s: NULL response queue pointer.\n", __func__);
3177                 return IRQ_NONE;
3178         }
3179         ha = rsp->hw;
3180         reg = &ha->iobase->isp24;
3181
3182         spin_lock_irqsave(&ha->hardware_lock, flags);
3183
3184         vha = pci_get_drvdata(ha->pdev);
3185         qla24xx_process_response_queue(vha, rsp);
3186         if (!ha->flags.disable_msix_handshake) {
3187                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3188                 RD_REG_DWORD_RELAXED(&reg->hccr);
3189         }
3190         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3191
3192         return IRQ_HANDLED;
3193 }
3194
3195 static irqreturn_t
3196 qla24xx_msix_default(int irq, void *dev_id)
3197 {
3198         scsi_qla_host_t *vha;
3199         struct qla_hw_data *ha;
3200         struct rsp_que *rsp;
3201         struct device_reg_24xx __iomem *reg;
3202         int             status;
3203         uint32_t        stat;
3204         uint32_t        hccr;
3205         uint16_t        mb[8];
3206         unsigned long flags;
3207
3208         rsp = (struct rsp_que *) dev_id;
3209         if (!rsp) {
3210                 ql_log(ql_log_info, NULL, 0x505c,
3211                     "%s: NULL response queue pointer.\n", __func__);
3212                 return IRQ_NONE;
3213         }
3214         ha = rsp->hw;
3215         reg = &ha->iobase->isp24;
3216         status = 0;
3217
3218         spin_lock_irqsave(&ha->hardware_lock, flags);
3219         vha = pci_get_drvdata(ha->pdev);
3220         do {
3221                 stat = RD_REG_DWORD(&reg->host_status);
3222                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3223                         break;
3224                 if (stat & HSRX_RISC_PAUSED) {
3225                         if (unlikely(pci_channel_offline(ha->pdev)))
3226                                 break;
3227
3228                         hccr = RD_REG_DWORD(&reg->hccr);
3229
3230                         ql_log(ql_log_info, vha, 0x5050,
3231                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3232                             hccr);
3233
3234                         qla2xxx_check_risc_status(vha);
3235
3236                         ha->isp_ops->fw_dump(vha, 1);
3237                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3238                         break;
3239                 } else if ((stat & HSRX_RISC_INT) == 0)
3240                         break;
3241
3242                 switch (stat & 0xff) {
3243                 case INTR_ROM_MB_SUCCESS:
3244                 case INTR_ROM_MB_FAILED:
3245                 case INTR_MB_SUCCESS:
3246                 case INTR_MB_FAILED:
3247                         qla24xx_mbx_completion(vha, MSW(stat));
3248                         status |= MBX_INTERRUPT;
3249
3250                         break;
3251                 case INTR_ASYNC_EVENT:
3252                         mb[0] = MSW(stat);
3253                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3254                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3255                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3256                         qla2x00_async_event(vha, rsp, mb);
3257                         break;
3258                 case INTR_RSP_QUE_UPDATE:
3259                 case INTR_RSP_QUE_UPDATE_83XX:
3260                         qla24xx_process_response_queue(vha, rsp);
3261                         break;
3262                 case INTR_ATIO_QUE_UPDATE:{
3263                         unsigned long flags2;
3264                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3265                         qlt_24xx_process_atio_queue(vha, 1);
3266                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3267                         break;
3268                 }
3269                 case INTR_ATIO_RSP_QUE_UPDATE: {
3270                         unsigned long flags2;
3271                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3272                         qlt_24xx_process_atio_queue(vha, 1);
3273                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3274
3275                         qla24xx_process_response_queue(vha, rsp);
3276                         break;
3277                 }
3278                 default:
3279                         ql_dbg(ql_dbg_async, vha, 0x5051,
3280                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3281                         break;
3282                 }
3283                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3284         } while (0);
3285         qla2x00_handle_mbx_completion(ha, status);
3286         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3287
3288         return IRQ_HANDLED;
3289 }
3290
3291 irqreturn_t
3292 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3293 {
3294         struct qla_hw_data *ha;
3295         struct qla_qpair *qpair;
3296         struct device_reg_24xx __iomem *reg;
3297         unsigned long flags;
3298
3299         qpair = dev_id;
3300         if (!qpair) {
3301                 ql_log(ql_log_info, NULL, 0x505b,
3302                     "%s: NULL response queue pointer.\n", __func__);
3303                 return IRQ_NONE;
3304         }
3305         ha = qpair->hw;
3306
3307         /* Clear the interrupt, if enabled, for this response queue */
3308         if (unlikely(!ha->flags.disable_msix_handshake)) {
3309                 reg = &ha->iobase->isp24;
3310                 spin_lock_irqsave(&ha->hardware_lock, flags);
3311                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3312                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3313         }
3314
3315         queue_work(ha->wq, &qpair->q_work);
3316
3317         return IRQ_HANDLED;
3318 }
3319
3320 /* Interrupt handling helpers. */
3321
3322 struct qla_init_msix_entry {
3323         const char *name;
3324         irq_handler_t handler;
3325 };
3326
3327 static const struct qla_init_msix_entry msix_entries[] = {
3328         { "default", qla24xx_msix_default },
3329         { "rsp_q", qla24xx_msix_rsp_q },
3330         { "atio_q", qla83xx_msix_atio_q },
3331         { "qpair_multiq", qla2xxx_msix_rsp_q },
3332 };
3333
3334 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3335         { "qla2xxx (default)", qla82xx_msix_default },
3336         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3337 };
3338
3339 static int
3340 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3341 {
3342         int i, ret;
3343         struct qla_msix_entry *qentry;
3344         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3345         int min_vecs = QLA_BASE_VECTORS;
3346         struct irq_affinity desc = {
3347                 .pre_vectors = QLA_BASE_VECTORS,
3348         };
3349
3350         if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
3351                 desc.pre_vectors++;
3352                 min_vecs++;
3353         }
3354
3355         if (USER_CTRL_IRQ(ha)) {
3356                 /* user wants to control IRQ setting for target mode */
3357                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3358                     ha->msix_count, PCI_IRQ_MSIX);
3359         } else
3360                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3361                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3362                     &desc);
3363
3364         if (ret < 0) {
3365                 ql_log(ql_log_fatal, vha, 0x00c7,
3366                     "MSI-X: Failed to enable support, "
3367                     "giving   up -- %d/%d.\n",
3368                     ha->msix_count, ret);
3369                 goto msix_out;
3370         } else if (ret < ha->msix_count) {
3371                 ql_log(ql_log_warn, vha, 0x00c6,
3372                     "MSI-X: Failed to enable support "
3373                      "with %d vectors, using %d vectors.\n",
3374                     ha->msix_count, ret);
3375                 ha->msix_count = ret;
3376                 /* Recalculate queue values */
3377                 if (ha->mqiobase && ql2xmqsupport) {
3378                         ha->max_req_queues = ha->msix_count - 1;
3379
3380                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3381                         if (QLA_TGT_MODE_ENABLED())
3382                                 ha->max_req_queues--;
3383
3384                         ha->max_rsp_queues = ha->max_req_queues;
3385
3386                         ha->max_qpairs = ha->max_req_queues - 1;
3387                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3388                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3389                 }
3390         }
3391         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
3392                                 ha->msix_count, GFP_KERNEL);
3393         if (!ha->msix_entries) {
3394                 ql_log(ql_log_fatal, vha, 0x00c8,
3395                     "Failed to allocate memory for ha->msix_entries.\n");
3396                 ret = -ENOMEM;
3397                 goto msix_out;
3398         }
3399         ha->flags.msix_enabled = 1;
3400
3401         for (i = 0; i < ha->msix_count; i++) {
3402                 qentry = &ha->msix_entries[i];
3403                 qentry->vector = pci_irq_vector(ha->pdev, i);
3404                 qentry->entry = i;
3405                 qentry->have_irq = 0;
3406                 qentry->in_use = 0;
3407                 qentry->handle = NULL;
3408         }
3409
3410         /* Enable MSI-X vectors for the base queue */
3411         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3412                 qentry = &ha->msix_entries[i];
3413                 qentry->handle = rsp;
3414                 rsp->msix = qentry;
3415                 scnprintf(qentry->name, sizeof(qentry->name),
3416                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3417                 if (IS_P3P_TYPE(ha))
3418                         ret = request_irq(qentry->vector,
3419                                 qla82xx_msix_entries[i].handler,
3420                                 0, qla82xx_msix_entries[i].name, rsp);
3421                 else
3422                         ret = request_irq(qentry->vector,
3423                                 msix_entries[i].handler,
3424                                 0, qentry->name, rsp);
3425                 if (ret)
3426                         goto msix_register_fail;
3427                 qentry->have_irq = 1;
3428                 qentry->in_use = 1;
3429         }
3430
3431         /*
3432          * If target mode is enable, also request the vector for the ATIO
3433          * queue.
3434          */
3435         if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
3436                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3437                 rsp->msix = qentry;
3438                 qentry->handle = rsp;
3439                 scnprintf(qentry->name, sizeof(qentry->name),
3440                     "qla2xxx%lu_%s", vha->host_no,
3441                     msix_entries[QLA_ATIO_VECTOR].name);
3442                 qentry->in_use = 1;
3443                 ret = request_irq(qentry->vector,
3444                         msix_entries[QLA_ATIO_VECTOR].handler,
3445                         0, qentry->name, rsp);
3446                 qentry->have_irq = 1;
3447         }
3448
3449 msix_register_fail:
3450         if (ret) {
3451                 ql_log(ql_log_fatal, vha, 0x00cb,
3452                     "MSI-X: unable to register handler -- %x/%d.\n",
3453                     qentry->vector, ret);
3454                 qla2x00_free_irqs(vha);
3455                 ha->mqenable = 0;
3456                 goto msix_out;
3457         }
3458
3459         /* Enable MSI-X vector for response queue update for queue 0 */
3460         if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
3461                 if (ha->msixbase && ha->mqiobase &&
3462                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3463                      ql2xmqsupport))
3464                         ha->mqenable = 1;
3465         } else
3466                 if (ha->mqiobase &&
3467                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3468                      ql2xmqsupport))
3469                         ha->mqenable = 1;
3470         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3471             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3472             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3473         ql_dbg(ql_dbg_init, vha, 0x0055,
3474             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3475             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3476
3477 msix_out:
3478         return ret;
3479 }
3480
3481 int
3482 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3483 {
3484         int ret = QLA_FUNCTION_FAILED;
3485         device_reg_t *reg = ha->iobase;
3486         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3487
3488         /* If possible, enable MSI-X. */
3489         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3490             !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) && !IS_QLAFX00(ha) &&
3491             !IS_QLA27XX(ha))
3492                 goto skip_msi;
3493
3494         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3495                 (ha->pdev->subsystem_device == 0x7040 ||
3496                 ha->pdev->subsystem_device == 0x7041 ||
3497                 ha->pdev->subsystem_device == 0x1705)) {
3498                 ql_log(ql_log_warn, vha, 0x0034,
3499                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3500                         ha->pdev->subsystem_vendor,
3501                         ha->pdev->subsystem_device);
3502                 goto skip_msi;
3503         }
3504
3505         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3506                 ql_log(ql_log_warn, vha, 0x0035,
3507                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3508                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3509                 goto skip_msix;
3510         }
3511
3512         ret = qla24xx_enable_msix(ha, rsp);
3513         if (!ret) {
3514                 ql_dbg(ql_dbg_init, vha, 0x0036,
3515                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3516                     ha->chip_revision, ha->fw_attributes);
3517                 goto clear_risc_ints;
3518         }
3519
3520 skip_msix:
3521
3522         ql_log(ql_log_info, vha, 0x0037,
3523             "Falling back-to MSI mode -%d.\n", ret);
3524
3525         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3526             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3527             !IS_QLA27XX(ha))
3528                 goto skip_msi;
3529
3530         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3531         if (!ret) {
3532                 ql_dbg(ql_dbg_init, vha, 0x0038,
3533                     "MSI: Enabled.\n");
3534                 ha->flags.msi_enabled = 1;
3535         } else
3536                 ql_log(ql_log_warn, vha, 0x0039,
3537                     "Falling back-to INTa mode -- %d.\n", ret);
3538 skip_msi:
3539
3540         /* Skip INTx on ISP82xx. */
3541         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3542                 return QLA_FUNCTION_FAILED;
3543
3544         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3545             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3546             QLA2XXX_DRIVER_NAME, rsp);
3547         if (ret) {
3548                 ql_log(ql_log_warn, vha, 0x003a,
3549                     "Failed to reserve interrupt %d already in use.\n",
3550                     ha->pdev->irq);
3551                 goto fail;
3552         } else if (!ha->flags.msi_enabled) {
3553                 ql_dbg(ql_dbg_init, vha, 0x0125,
3554                     "INTa mode: Enabled.\n");
3555                 ha->flags.mr_intr_valid = 1;
3556         }
3557
3558 clear_risc_ints:
3559         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3560                 goto fail;
3561
3562         spin_lock_irq(&ha->hardware_lock);
3563         WRT_REG_WORD(&reg->isp.semaphore, 0);
3564         spin_unlock_irq(&ha->hardware_lock);
3565
3566 fail:
3567         return ret;
3568 }
3569
3570 void
3571 qla2x00_free_irqs(scsi_qla_host_t *vha)
3572 {
3573         struct qla_hw_data *ha = vha->hw;
3574         struct rsp_que *rsp;
3575         struct qla_msix_entry *qentry;
3576         int i;
3577
3578         /*
3579          * We need to check that ha->rsp_q_map is valid in case we are called
3580          * from a probe failure context.
3581          */
3582         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3583                 goto free_irqs;
3584         rsp = ha->rsp_q_map[0];
3585
3586         if (ha->flags.msix_enabled) {
3587                 for (i = 0; i < ha->msix_count; i++) {
3588                         qentry = &ha->msix_entries[i];
3589                         if (qentry->have_irq) {
3590                                 irq_set_affinity_notifier(qentry->vector, NULL);
3591                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3592                         }
3593                 }
3594                 kfree(ha->msix_entries);
3595                 ha->msix_entries = NULL;
3596                 ha->flags.msix_enabled = 0;
3597                 ql_dbg(ql_dbg_init, vha, 0x0042,
3598                         "Disabled MSI-X.\n");
3599         } else {
3600                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3601         }
3602
3603 free_irqs:
3604         pci_free_irq_vectors(ha->pdev);
3605 }
3606
3607 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3608         struct qla_msix_entry *msix, int vector_type)
3609 {
3610         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3611         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3612         int ret;
3613
3614         scnprintf(msix->name, sizeof(msix->name),
3615             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3616         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3617         if (ret) {
3618                 ql_log(ql_log_fatal, vha, 0x00e6,
3619                     "MSI-X: Unable to register handler -- %x/%d.\n",
3620                     msix->vector, ret);
3621                 return ret;
3622         }
3623         msix->have_irq = 1;
3624         msix->handle = qpair;
3625         return ret;
3626 }