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