drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_target.h"
   9
  10 #include <linux/delay.h>
  11 #include <linux/slab.h>
  12 #include <linux/cpu.h>
  13 #include <linux/t10-pi.h>
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsi_bsg_fc.h>
  16 #include <scsi/scsi_eh.h>
  17 #include <scsi/fc/fc_fs.h>
  18 #include <linux/nvme-fc-driver.h>
  19
  20 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  21 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  22 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  23 static int qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  24         sts_entry_t *);
  25
  26 /**
  27  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  28  * @irq:
  29  * @dev_id: SCSI driver HA context
  30  *
  31  * Called by system whenever the host adapter generates an interrupt.
  32  *
  33  * Returns handled flag.
  34  */
  35 irqreturn_t
  36 qla2100_intr_handler(int irq, void *dev_id)
  37 {
  38         scsi_qla_host_t *vha;
  39         struct qla_hw_data *ha;
  40         struct device_reg_2xxx __iomem *reg;
  41         int             status;
  42         unsigned long   iter;
  43         uint16_t        hccr;
  44         uint16_t        mb[4];
  45         struct rsp_que *rsp;
  46         unsigned long   flags;
  47
  48         rsp = (struct rsp_que *) dev_id;
  49         if (!rsp) {
  50                 ql_log(ql_log_info, NULL, 0x505d,
  51                     "%s: NULL response queue pointer.\n", __func__);
  52                 return (IRQ_NONE);
  53         }
  54
  55         ha = rsp->hw;
  56         reg = &ha->iobase->isp;
  57         status = 0;
  58
  59         spin_lock_irqsave(&ha->hardware_lock, flags);
  60         vha = pci_get_drvdata(ha->pdev);
  61         for (iter = 50; iter--; ) {
  62                 hccr = RD_REG_WORD(&reg->hccr);
  63                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  64                         break;
  65                 if (hccr & HCCR_RISC_PAUSE) {
  66                         if (pci_channel_offline(ha->pdev))
  67                                 break;
  68
  69                         /*
  70                          * Issue a "HARD" reset in order for the RISC interrupt
  71                          * bit to be cleared.  Schedule a big hammer to get
  72                          * out of the RISC PAUSED state.
  73                          */
  74                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  75                         RD_REG_WORD(&reg->hccr);
  76
  77                         ha->isp_ops->fw_dump(vha, 1);
  78                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  79                         break;
  80                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  81                         break;
  82
  83                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  84                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  85                         RD_REG_WORD(&reg->hccr);
  86
  87                         /* Get mailbox data. */
  88                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  89                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  90                                 qla2x00_mbx_completion(vha, mb[0]);
  91                                 status |= MBX_INTERRUPT;
  92                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  93                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  94                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  95                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  96                                 qla2x00_async_event(vha, rsp, mb);
  97                         } else {
  98                                 /*EMPTY*/
  99                                 ql_dbg(ql_dbg_async, vha, 0x5025,
 100                                     "Unrecognized interrupt type (%d).\n",
 101                                     mb[0]);
 102                         }
 103                         /* Release mailbox registers. */
 104                         WRT_REG_WORD(&reg->semaphore, 0);
 105                         RD_REG_WORD(&reg->semaphore);
 106                 } else {
 107                         qla2x00_process_response_queue(rsp);
 108
 109                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 110                         RD_REG_WORD(&reg->hccr);
 111                 }
 112         }
 113         qla2x00_handle_mbx_completion(ha, status);
 114         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 115
 116         return (IRQ_HANDLED);
 117 }
 118
 119 bool
 120 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 121 {
 122         /* Check for PCI disconnection */
 123         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 124                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 125                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 126                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 127                         /*
 128                          * Schedule this (only once) on the default system
 129                          * workqueue so that all the adapter workqueues and the
 130                          * DPC thread can be shutdown cleanly.
 131                          */
 132                         schedule_work(&vha->hw->board_disable);
 133                 }
 134                 return true;
 135         } else
 136                 return false;
 137 }
 138
 139 bool
 140 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 141 {
 142         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 143 }
 144
 145 /**
 146  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 147  * @irq:
 148  * @dev_id: SCSI driver HA context
 149  *
 150  * Called by system whenever the host adapter generates an interrupt.
 151  *
 152  * Returns handled flag.
 153  */
 154 irqreturn_t
 155 qla2300_intr_handler(int irq, void *dev_id)
 156 {
 157         scsi_qla_host_t *vha;
 158         struct device_reg_2xxx __iomem *reg;
 159         int             status;
 160         unsigned long   iter;
 161         uint32_t        stat;
 162         uint16_t        hccr;
 163         uint16_t        mb[4];
 164         struct rsp_que *rsp;
 165         struct qla_hw_data *ha;
 166         unsigned long   flags;
 167
 168         rsp = (struct rsp_que *) dev_id;
 169         if (!rsp) {
 170                 ql_log(ql_log_info, NULL, 0x5058,
 171                     "%s: NULL response queue pointer.\n", __func__);
 172                 return (IRQ_NONE);
 173         }
 174
 175         ha = rsp->hw;
 176         reg = &ha->iobase->isp;
 177         status = 0;
 178
 179         spin_lock_irqsave(&ha->hardware_lock, flags);
 180         vha = pci_get_drvdata(ha->pdev);
 181         for (iter = 50; iter--; ) {
 182                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 183                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 184                         break;
 185                 if (stat & HSR_RISC_PAUSED) {
 186                         if (unlikely(pci_channel_offline(ha->pdev)))
 187                                 break;
 188
 189                         hccr = RD_REG_WORD(&reg->hccr);
 190
 191                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 192                                 ql_log(ql_log_warn, vha, 0x5026,
 193                                     "Parity error -- HCCR=%x, Dumping "
 194                                     "firmware.\n", hccr);
 195                         else
 196                                 ql_log(ql_log_warn, vha, 0x5027,
 197                                     "RISC paused -- HCCR=%x, Dumping "
 198                                     "firmware.\n", hccr);
 199
 200                         /*
 201                          * Issue a "HARD" reset in order for the RISC
 202                          * interrupt bit to be cleared.  Schedule a big
 203                          * hammer to get out of the RISC PAUSED state.
 204                          */
 205                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 206                         RD_REG_WORD(&reg->hccr);
 207
 208                         ha->isp_ops->fw_dump(vha, 1);
 209                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 210                         break;
 211                 } else if ((stat & HSR_RISC_INT) == 0)
 212                         break;
 213
 214                 switch (stat & 0xff) {
 215                 case 0x1:
 216                 case 0x2:
 217                 case 0x10:
 218                 case 0x11:
 219                         qla2x00_mbx_completion(vha, MSW(stat));
 220                         status |= MBX_INTERRUPT;
 221
 222                         /* Release mailbox registers. */
 223                         WRT_REG_WORD(&reg->semaphore, 0);
 224                         break;
 225                 case 0x12:
 226                         mb[0] = MSW(stat);
 227                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 228                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 229                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 230                         qla2x00_async_event(vha, rsp, mb);
 231                         break;
 232                 case 0x13:
 233                         qla2x00_process_response_queue(rsp);
 234                         break;
 235                 case 0x15:
 236                         mb[0] = MBA_CMPLT_1_16BIT;
 237                         mb[1] = MSW(stat);
 238                         qla2x00_async_event(vha, rsp, mb);
 239                         break;
 240                 case 0x16:
 241                         mb[0] = MBA_SCSI_COMPLETION;
 242                         mb[1] = MSW(stat);
 243                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 244                         qla2x00_async_event(vha, rsp, mb);
 245                         break;
 246                 default:
 247                         ql_dbg(ql_dbg_async, vha, 0x5028,
 248                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 249                         break;
 250                 }
 251                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 252                 RD_REG_WORD_RELAXED(&reg->hccr);
 253         }
 254         qla2x00_handle_mbx_completion(ha, status);
 255         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 256
 257         return (IRQ_HANDLED);
 258 }
 259
 260 /**
 261  * qla2x00_mbx_completion() - Process mailbox command completions.
 262  * @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                         qla2x00_mark_all_devices_lost(vha, 1);
 915                 }
 916
 917                 if (vha->vp_idx) {
 918                         atomic_set(&vha->vp_state, VP_FAILED);
 919                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 920                 }
 921
 922                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 923                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 924
 925                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 926                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 927
 928                 vha->flags.management_server_logged_in = 0;
 929                 break;
 930
 931         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 932                 if (IS_QLA2100(ha))
 933                         break;
 934
 935                 ql_dbg(ql_dbg_async, vha, 0x500f,
 936                     "Configuration change detected: value=%x.\n", mb[1]);
 937
 938                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 939                         atomic_set(&vha->loop_state, LOOP_DOWN);
 940                         if (!atomic_read(&vha->loop_down_timer))
 941                                 atomic_set(&vha->loop_down_timer,
 942                                     LOOP_DOWN_TIME);
 943                         qla2x00_mark_all_devices_lost(vha, 1);
 944                 }
 945
 946                 if (vha->vp_idx) {
 947                         atomic_set(&vha->vp_state, VP_FAILED);
 948                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 949                 }
 950
 951                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 952                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 953                 break;
 954
 955         case MBA_PORT_UPDATE:           /* Port database update */
 956                 /*
 957                  * Handle only global and vn-port update events
 958                  *
 959                  * Relevant inputs:
 960                  * mb[1] = N_Port handle of changed port
 961                  * OR 0xffff for global event
 962                  * mb[2] = New login state
 963                  * 7 = Port logged out
 964                  * mb[3] = LSB is vp_idx, 0xff = all vps
 965                  *
 966                  * Skip processing if:
 967                  *       Event is global, vp_idx is NOT all vps,
 968                  *           vp_idx does not match
 969                  *       Event is not global, vp_idx does not match
 970                  */
 971                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 972                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 973                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 974                         break;
 975
 976                 if (mb[2] == 0x7) {
 977                         ql_dbg(ql_dbg_async, vha, 0x5010,
 978                             "Port %s %04x %04x %04x.\n",
 979                             mb[1] == 0xffff ? "unavailable" : "logout",
 980                             mb[1], mb[2], mb[3]);
 981
 982                         if (mb[1] == 0xffff)
 983                                 goto global_port_update;
 984
 985                         if (mb[1] == NPH_SNS_LID(ha)) {
 986                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 987                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 988                                 break;
 989                         }
 990
 991                         /* use handle_cnt for loop id/nport handle */
 992                         if (IS_FWI2_CAPABLE(ha))
 993                                 handle_cnt = NPH_SNS;
 994                         else
 995                                 handle_cnt = SIMPLE_NAME_SERVER;
 996                         if (mb[1] == handle_cnt) {
 997                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 998                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 999                                 break;
1000                         }
1001
1002                         /* Port logout */
1003                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1004                         if (!fcport)
1005                                 break;
1006                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1007                                 break;
1008                         ql_dbg(ql_dbg_async, vha, 0x508a,
1009                             "Marking port lost loopid=%04x portid=%06x.\n",
1010                             fcport->loop_id, fcport->d_id.b24);
1011                         if (qla_ini_mode_enabled(vha)) {
1012                                 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1013                                 fcport->logout_on_delete = 0;
1014                                 qlt_schedule_sess_for_deletion(fcport);
1015                         }
1016                         break;
1017
1018 global_port_update:
1019                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1020                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1021                                 atomic_set(&vha->loop_down_timer,
1022                                     LOOP_DOWN_TIME);
1023                                 vha->device_flags |= DFLG_NO_CABLE;
1024                                 qla2x00_mark_all_devices_lost(vha, 1);
1025                         }
1026
1027                         if (vha->vp_idx) {
1028                                 atomic_set(&vha->vp_state, VP_FAILED);
1029                                 fc_vport_set_state(vha->fc_vport,
1030                                     FC_VPORT_FAILED);
1031                                 qla2x00_mark_all_devices_lost(vha, 1);
1032                         }
1033
1034                         vha->flags.management_server_logged_in = 0;
1035                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1036                         break;
1037                 }
1038
1039                 /*
1040                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1041                  * event etc. earlier indicating loop is down) then process
1042                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1043                  */
1044                 atomic_set(&vha->loop_down_timer, 0);
1045                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1046                         !ha->flags.n2n_ae  &&
1047                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1048                         ql_dbg(ql_dbg_async, vha, 0x5011,
1049                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1050                             mb[1], mb[2], mb[3]);
1051
1052                         qlt_async_event(mb[0], vha, mb);
1053                         break;
1054                 }
1055
1056                 ql_dbg(ql_dbg_async, vha, 0x5012,
1057                     "Port database changed %04x %04x %04x.\n",
1058                     mb[1], mb[2], mb[3]);
1059
1060                 /*
1061                  * Mark all devices as missing so we will login again.
1062                  */
1063                 atomic_set(&vha->loop_state, LOOP_UP);
1064                 vha->scan.scan_retry = 0;
1065
1066                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1067                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1068                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1069
1070                 qlt_async_event(mb[0], vha, mb);
1071                 break;
1072
1073         case MBA_RSCN_UPDATE:           /* State Change Registration */
1074                 /* Check if the Vport has issued a SCR */
1075                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1076                         break;
1077                 /* Only handle SCNs for our Vport index. */
1078                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1079                         break;
1080
1081                 ql_dbg(ql_dbg_async, vha, 0x5013,
1082                     "RSCN database changed -- %04x %04x %04x.\n",
1083                     mb[1], mb[2], mb[3]);
1084
1085                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1086                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1087                                 | vha->d_id.b.al_pa;
1088                 if (rscn_entry == host_pid) {
1089                         ql_dbg(ql_dbg_async, vha, 0x5014,
1090                             "Ignoring RSCN update to local host "
1091                             "port ID (%06x).\n", host_pid);
1092                         break;
1093                 }
1094
1095                 /* Ignore reserved bits from RSCN-payload. */
1096                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1097
1098                 /* Skip RSCNs for virtual ports on the same physical port */
1099                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1100                         break;
1101
1102                 atomic_set(&vha->loop_down_timer, 0);
1103                 vha->flags.management_server_logged_in = 0;
1104                 {
1105                         struct event_arg ea;
1106
1107                         memset(&ea, 0, sizeof(ea));
1108                         ea.event = FCME_RSCN;
1109                         ea.id.b24 = rscn_entry;
1110                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1111                         qla2x00_fcport_event_handler(vha, &ea);
1112                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1113                 }
1114                 break;
1115         /* case MBA_RIO_RESPONSE: */
1116         case MBA_ZIO_RESPONSE:
1117                 ql_dbg(ql_dbg_async, vha, 0x5015,
1118                     "[R|Z]IO update completion.\n");
1119
1120                 if (IS_FWI2_CAPABLE(ha))
1121                         qla24xx_process_response_queue(vha, rsp);
1122                 else
1123                         qla2x00_process_response_queue(rsp);
1124                 break;
1125
1126         case MBA_DISCARD_RND_FRAME:
1127                 ql_dbg(ql_dbg_async, vha, 0x5016,
1128                     "Discard RND Frame -- %04x %04x %04x.\n",
1129                     mb[1], mb[2], mb[3]);
1130                 break;
1131
1132         case MBA_TRACE_NOTIFICATION:
1133                 ql_dbg(ql_dbg_async, vha, 0x5017,
1134                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1135                 break;
1136
1137         case MBA_ISP84XX_ALERT:
1138                 ql_dbg(ql_dbg_async, vha, 0x5018,
1139                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1140                     mb[1], mb[2], mb[3]);
1141
1142                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1143                 switch (mb[1]) {
1144                 case A84_PANIC_RECOVERY:
1145                         ql_log(ql_log_info, vha, 0x5019,
1146                             "Alert 84XX: panic recovery %04x %04x.\n",
1147                             mb[2], mb[3]);
1148                         break;
1149                 case A84_OP_LOGIN_COMPLETE:
1150                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1151                         ql_log(ql_log_info, vha, 0x501a,
1152                             "Alert 84XX: firmware version %x.\n",
1153                             ha->cs84xx->op_fw_version);
1154                         break;
1155                 case A84_DIAG_LOGIN_COMPLETE:
1156                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1157                         ql_log(ql_log_info, vha, 0x501b,
1158                             "Alert 84XX: diagnostic firmware version %x.\n",
1159                             ha->cs84xx->diag_fw_version);
1160                         break;
1161                 case A84_GOLD_LOGIN_COMPLETE:
1162                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1163                         ha->cs84xx->fw_update = 1;
1164                         ql_log(ql_log_info, vha, 0x501c,
1165                             "Alert 84XX: gold firmware version %x.\n",
1166                             ha->cs84xx->gold_fw_version);
1167                         break;
1168                 default:
1169                         ql_log(ql_log_warn, vha, 0x501d,
1170                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1171                             mb[1], mb[2], mb[3]);
1172                 }
1173                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1174                 break;
1175         case MBA_DCBX_START:
1176                 ql_dbg(ql_dbg_async, vha, 0x501e,
1177                     "DCBX Started -- %04x %04x %04x.\n",
1178                     mb[1], mb[2], mb[3]);
1179                 break;
1180         case MBA_DCBX_PARAM_UPDATE:
1181                 ql_dbg(ql_dbg_async, vha, 0x501f,
1182                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1183                     mb[1], mb[2], mb[3]);
1184                 break;
1185         case MBA_FCF_CONF_ERR:
1186                 ql_dbg(ql_dbg_async, vha, 0x5020,
1187                     "FCF Configuration Error -- %04x %04x %04x.\n",
1188                     mb[1], mb[2], mb[3]);
1189                 break;
1190         case MBA_IDC_NOTIFY:
1191                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1192                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1193                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1194                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1195                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1196                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1197                                 /*
1198                                  * Extend loop down timer since port is active.
1199                                  */
1200                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1201                                         atomic_set(&vha->loop_down_timer,
1202                                             LOOP_DOWN_TIME);
1203                                 qla2xxx_wake_dpc(vha);
1204                         }
1205                 }
1206                 /* fall through */
1207         case MBA_IDC_COMPLETE:
1208                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1209                         complete(&ha->lb_portup_comp);
1210                 /* Fallthru */
1211         case MBA_IDC_TIME_EXT:
1212                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1213                     IS_QLA8044(ha))
1214                         qla81xx_idc_event(vha, mb[0], mb[1]);
1215                 break;
1216
1217         case MBA_IDC_AEN:
1218                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1219                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1220                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1221                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1222                 qla83xx_handle_8200_aen(vha, mb);
1223                 break;
1224
1225         case MBA_DPORT_DIAGNOSTICS:
1226                 ql_dbg(ql_dbg_async, vha, 0x5052,
1227                     "D-Port Diagnostics: %04x result=%s\n",
1228                     mb[0],
1229                     mb[1] == 0 ? "start" :
1230                     mb[1] == 1 ? "done (pass)" :
1231                     mb[1] == 2 ? "done (error)" : "other");
1232                 break;
1233
1234         case MBA_TEMPERATURE_ALERT:
1235                 ql_dbg(ql_dbg_async, vha, 0x505e,
1236                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1237                 if (mb[1] == 0x12)
1238                         schedule_work(&ha->board_disable);
1239                 break;
1240
1241         case MBA_TRANS_INSERT:
1242                 ql_dbg(ql_dbg_async, vha, 0x5091,
1243                     "Transceiver Insertion: %04x\n", mb[1]);
1244                 break;
1245
1246         default:
1247                 ql_dbg(ql_dbg_async, vha, 0x5057,
1248                     "Unknown AEN:%04x %04x %04x %04x\n",
1249                     mb[0], mb[1], mb[2], mb[3]);
1250         }
1251
1252         qlt_async_event(mb[0], vha, mb);
1253
1254         if (!vha->vp_idx && ha->num_vhosts)
1255                 qla2x00_alert_all_vps(rsp, mb);
1256 }
1257
1258 /**
1259  * qla2x00_process_completed_request() - Process a Fast Post response.
1260  * @vha: SCSI driver HA context
1261  * @req: request queue
1262  * @index: SRB index
1263  */
1264 void
1265 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1266                                   struct req_que *req, uint32_t index)
1267 {
1268         srb_t *sp;
1269         struct qla_hw_data *ha = vha->hw;
1270
1271         /* Validate handle. */
1272         if (index >= req->num_outstanding_cmds) {
1273                 ql_log(ql_log_warn, vha, 0x3014,
1274                     "Invalid SCSI command index (%x).\n", index);
1275
1276                 if (IS_P3P_TYPE(ha))
1277                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1278                 else
1279                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1280                 return;
1281         }
1282
1283         sp = req->outstanding_cmds[index];
1284         if (sp) {
1285                 /* Free outstanding command slot. */
1286                 req->outstanding_cmds[index] = NULL;
1287
1288                 /* Save ISP completion status */
1289                 sp->done(sp, DID_OK << 16);
1290         } else {
1291                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1292
1293                 if (IS_P3P_TYPE(ha))
1294                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1295                 else
1296                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1297         }
1298 }
1299
1300 srb_t *
1301 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1302     struct req_que *req, void *iocb)
1303 {
1304         struct qla_hw_data *ha = vha->hw;
1305         sts_entry_t *pkt = iocb;
1306         srb_t *sp = NULL;
1307         uint16_t index;
1308
1309         index = LSW(pkt->handle);
1310         if (index >= req->num_outstanding_cmds) {
1311                 ql_log(ql_log_warn, vha, 0x5031,
1312                            "Invalid command index (%x) type %8ph.\n",
1313                            index, iocb);
1314                 if (IS_P3P_TYPE(ha))
1315                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1316                 else
1317                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1318                 goto done;
1319         }
1320         sp = req->outstanding_cmds[index];
1321         if (!sp) {
1322                 ql_log(ql_log_warn, vha, 0x5032,
1323                     "Invalid completion handle (%x) -- timed-out.\n", index);
1324                 return sp;
1325         }
1326         if (sp->handle != index) {
1327                 ql_log(ql_log_warn, vha, 0x5033,
1328                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1329                 return NULL;
1330         }
1331
1332         req->outstanding_cmds[index] = NULL;
1333
1334 done:
1335         return sp;
1336 }
1337
1338 static void
1339 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1340     struct mbx_entry *mbx)
1341 {
1342         const char func[] = "MBX-IOCB";
1343         const char *type;
1344         fc_port_t *fcport;
1345         srb_t *sp;
1346         struct srb_iocb *lio;
1347         uint16_t *data;
1348         uint16_t status;
1349
1350         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1351         if (!sp)
1352                 return;
1353
1354         lio = &sp->u.iocb_cmd;
1355         type = sp->name;
1356         fcport = sp->fcport;
1357         data = lio->u.logio.data;
1358
1359         data[0] = MBS_COMMAND_ERROR;
1360         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1361             QLA_LOGIO_LOGIN_RETRIED : 0;
1362         if (mbx->entry_status) {
1363                 ql_dbg(ql_dbg_async, vha, 0x5043,
1364                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1365                     "entry-status=%x status=%x state-flag=%x "
1366                     "status-flags=%x.\n", type, sp->handle,
1367                     fcport->d_id.b.domain, fcport->d_id.b.area,
1368                     fcport->d_id.b.al_pa, mbx->entry_status,
1369                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1370                     le16_to_cpu(mbx->status_flags));
1371
1372                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1373                     (uint8_t *)mbx, sizeof(*mbx));
1374
1375                 goto logio_done;
1376         }
1377
1378         status = le16_to_cpu(mbx->status);
1379         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1380             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1381                 status = 0;
1382         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1383                 ql_dbg(ql_dbg_async, vha, 0x5045,
1384                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1385                     type, sp->handle, fcport->d_id.b.domain,
1386                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1387                     le16_to_cpu(mbx->mb1));
1388
1389                 data[0] = MBS_COMMAND_COMPLETE;
1390                 if (sp->type == SRB_LOGIN_CMD) {
1391                         fcport->port_type = FCT_TARGET;
1392                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1393                                 fcport->port_type = FCT_INITIATOR;
1394                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1395                                 fcport->flags |= FCF_FCP2_DEVICE;
1396                 }
1397                 goto logio_done;
1398         }
1399
1400         data[0] = le16_to_cpu(mbx->mb0);
1401         switch (data[0]) {
1402         case MBS_PORT_ID_USED:
1403                 data[1] = le16_to_cpu(mbx->mb1);
1404                 break;
1405         case MBS_LOOP_ID_USED:
1406                 break;
1407         default:
1408                 data[0] = MBS_COMMAND_ERROR;
1409                 break;
1410         }
1411
1412         ql_log(ql_log_warn, vha, 0x5046,
1413             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1414             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1415             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1416             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1417             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1418             le16_to_cpu(mbx->mb7));
1419
1420 logio_done:
1421         sp->done(sp, 0);
1422 }
1423
1424 static void
1425 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1426     struct mbx_24xx_entry *pkt)
1427 {
1428         const char func[] = "MBX-IOCB2";
1429         srb_t *sp;
1430         struct srb_iocb *si;
1431         u16 sz, i;
1432         int res;
1433
1434         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1435         if (!sp)
1436                 return;
1437
1438         si = &sp->u.iocb_cmd;
1439         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1440
1441         for (i = 0; i < sz; i++)
1442                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1443
1444         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1445
1446         sp->done(sp, res);
1447 }
1448
1449 static void
1450 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1451     struct nack_to_isp *pkt)
1452 {
1453         const char func[] = "nack";
1454         srb_t *sp;
1455         int res = 0;
1456
1457         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1458         if (!sp)
1459                 return;
1460
1461         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1462                 res = QLA_FUNCTION_FAILED;
1463
1464         sp->done(sp, res);
1465 }
1466
1467 static void
1468 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1469     sts_entry_t *pkt, int iocb_type)
1470 {
1471         const char func[] = "CT_IOCB";
1472         const char *type;
1473         srb_t *sp;
1474         struct bsg_job *bsg_job;
1475         struct fc_bsg_reply *bsg_reply;
1476         uint16_t comp_status;
1477         int res = 0;
1478
1479         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1480         if (!sp)
1481                 return;
1482
1483         switch (sp->type) {
1484         case SRB_CT_CMD:
1485             bsg_job = sp->u.bsg_job;
1486             bsg_reply = bsg_job->reply;
1487
1488             type = "ct pass-through";
1489
1490             comp_status = le16_to_cpu(pkt->comp_status);
1491
1492             /*
1493              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1494              * fc payload  to the caller
1495              */
1496             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1497             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1498
1499             if (comp_status != CS_COMPLETE) {
1500                     if (comp_status == CS_DATA_UNDERRUN) {
1501                             res = DID_OK << 16;
1502                             bsg_reply->reply_payload_rcv_len =
1503                                 le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1504
1505                             ql_log(ql_log_warn, vha, 0x5048,
1506                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1507                                 type, comp_status,
1508                                 bsg_reply->reply_payload_rcv_len);
1509                     } else {
1510                             ql_log(ql_log_warn, vha, 0x5049,
1511                                 "CT pass-through-%s error comp_status=0x%x.\n",
1512                                 type, comp_status);
1513                             res = DID_ERROR << 16;
1514                             bsg_reply->reply_payload_rcv_len = 0;
1515                     }
1516                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1517                         (uint8_t *)pkt, sizeof(*pkt));
1518             } else {
1519                     res = DID_OK << 16;
1520                     bsg_reply->reply_payload_rcv_len =
1521                         bsg_job->reply_payload.payload_len;
1522                     bsg_job->reply_len = 0;
1523             }
1524             break;
1525         case SRB_CT_PTHRU_CMD:
1526             /*
1527              * borrowing sts_entry_24xx.comp_status.
1528              * same location as ct_entry_24xx.comp_status
1529              */
1530              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1531                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1532                  sp->name);
1533              break;
1534         }
1535
1536         sp->done(sp, res);
1537 }
1538
1539 static void
1540 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1541     struct sts_entry_24xx *pkt, int iocb_type)
1542 {
1543         const char func[] = "ELS_CT_IOCB";
1544         const char *type;
1545         srb_t *sp;
1546         struct bsg_job *bsg_job;
1547         struct fc_bsg_reply *bsg_reply;
1548         uint16_t comp_status;
1549         uint32_t fw_status[3];
1550         int res;
1551         struct srb_iocb *els;
1552
1553         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1554         if (!sp)
1555                 return;
1556
1557         type = NULL;
1558         switch (sp->type) {
1559         case SRB_ELS_CMD_RPT:
1560         case SRB_ELS_CMD_HST:
1561                 type = "els";
1562                 break;
1563         case SRB_CT_CMD:
1564                 type = "ct pass-through";
1565                 break;
1566         case SRB_ELS_DCMD:
1567                 type = "Driver ELS logo";
1568                 if (iocb_type != ELS_IOCB_TYPE) {
1569                         ql_dbg(ql_dbg_user, vha, 0x5047,
1570                             "Completing %s: (%p) type=%d.\n",
1571                             type, sp, sp->type);
1572                         sp->done(sp, 0);
1573                         return;
1574                 }
1575                 break;
1576         case SRB_CT_PTHRU_CMD:
1577                 /* borrowing sts_entry_24xx.comp_status.
1578                    same location as ct_entry_24xx.comp_status
1579                  */
1580                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1581                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1582                         sp->name);
1583                 sp->done(sp, res);
1584                 return;
1585         default:
1586                 ql_dbg(ql_dbg_user, vha, 0x503e,
1587                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1588                 return;
1589         }
1590
1591         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1592         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1593         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1594
1595         if (iocb_type == ELS_IOCB_TYPE) {
1596                 els = &sp->u.iocb_cmd;
1597                 els->u.els_plogi.fw_status[0] = fw_status[0];
1598                 els->u.els_plogi.fw_status[1] = fw_status[1];
1599                 els->u.els_plogi.fw_status[2] = fw_status[2];
1600                 els->u.els_plogi.comp_status = fw_status[0];
1601                 if (comp_status == CS_COMPLETE) {
1602                         res =  DID_OK << 16;
1603                 } else {
1604                         if (comp_status == CS_DATA_UNDERRUN) {
1605                                 res =  DID_OK << 16;
1606                                 els->u.els_plogi.len =
1607                                 le16_to_cpu(((struct els_sts_entry_24xx *)
1608                                         pkt)->total_byte_count);
1609                         } else {
1610                                 els->u.els_plogi.len = 0;
1611                                 res = DID_ERROR << 16;
1612                         }
1613                 }
1614                 ql_log(ql_log_info, vha, 0x503f,
1615                     "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",
1616                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
1617                     le16_to_cpu(((struct els_sts_entry_24xx *)
1618                         pkt)->total_byte_count));
1619                 goto els_ct_done;
1620         }
1621
1622         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1623          * fc payload  to the caller
1624          */
1625         bsg_job = sp->u.bsg_job;
1626         bsg_reply = bsg_job->reply;
1627         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1628         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1629
1630         if (comp_status != CS_COMPLETE) {
1631                 if (comp_status == CS_DATA_UNDERRUN) {
1632                         res = DID_OK << 16;
1633                         bsg_reply->reply_payload_rcv_len =
1634                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1635
1636                         ql_dbg(ql_dbg_user, vha, 0x503f,
1637                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1638                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1639                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1640                             le16_to_cpu(((struct els_sts_entry_24xx *)
1641                                 pkt)->total_byte_count));
1642                 } else {
1643                         ql_dbg(ql_dbg_user, vha, 0x5040,
1644                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1645                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1646                             type, sp->handle, comp_status,
1647                             le16_to_cpu(((struct els_sts_entry_24xx *)
1648                                 pkt)->error_subcode_1),
1649                             le16_to_cpu(((struct els_sts_entry_24xx *)
1650                                     pkt)->error_subcode_2));
1651                         res = DID_ERROR << 16;
1652                         bsg_reply->reply_payload_rcv_len = 0;
1653                 }
1654                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
1655                        fw_status, sizeof(fw_status));
1656                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1657                                 (uint8_t *)pkt, sizeof(*pkt));
1658         }
1659         else {
1660                 res =  DID_OK << 16;
1661                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1662                 bsg_job->reply_len = 0;
1663         }
1664 els_ct_done:
1665
1666         sp->done(sp, res);
1667 }
1668
1669 static void
1670 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1671     struct logio_entry_24xx *logio)
1672 {
1673         const char func[] = "LOGIO-IOCB";
1674         const char *type;
1675         fc_port_t *fcport;
1676         srb_t *sp;
1677         struct srb_iocb *lio;
1678         uint16_t *data;
1679         uint32_t iop[2];
1680
1681         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1682         if (!sp)
1683                 return;
1684
1685         lio = &sp->u.iocb_cmd;
1686         type = sp->name;
1687         fcport = sp->fcport;
1688         data = lio->u.logio.data;
1689
1690         data[0] = MBS_COMMAND_ERROR;
1691         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1692                 QLA_LOGIO_LOGIN_RETRIED : 0;
1693         if (logio->entry_status) {
1694                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1695                     "Async-%s error entry - %8phC hdl=%x"
1696                     "portid=%02x%02x%02x entry-status=%x.\n",
1697                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1698                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1699                     logio->entry_status);
1700                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1701                     (uint8_t *)logio, sizeof(*logio));
1702
1703                 goto logio_done;
1704         }
1705
1706         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1707                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1708                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1709                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1710                     fcport->d_id.b.domain,
1711                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1712                     le32_to_cpu(logio->io_parameter[0]));
1713
1714                 vha->hw->exch_starvation = 0;
1715                 data[0] = MBS_COMMAND_COMPLETE;
1716                 if (sp->type != SRB_LOGIN_CMD)
1717                         goto logio_done;
1718
1719                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1720                 if (iop[0] & BIT_4) {
1721                         fcport->port_type = FCT_TARGET;
1722                         if (iop[0] & BIT_8)
1723                                 fcport->flags |= FCF_FCP2_DEVICE;
1724                 } else if (iop[0] & BIT_5)
1725                         fcport->port_type = FCT_INITIATOR;
1726
1727                 if (iop[0] & BIT_7)
1728                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1729
1730                 if (logio->io_parameter[7] || logio->io_parameter[8])
1731                         fcport->supported_classes |= FC_COS_CLASS2;
1732                 if (logio->io_parameter[9] || logio->io_parameter[10])
1733                         fcport->supported_classes |= FC_COS_CLASS3;
1734
1735                 goto logio_done;
1736         }
1737
1738         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1739         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1740         lio->u.logio.iop[0] = iop[0];
1741         lio->u.logio.iop[1] = iop[1];
1742         switch (iop[0]) {
1743         case LSC_SCODE_PORTID_USED:
1744                 data[0] = MBS_PORT_ID_USED;
1745                 data[1] = LSW(iop[1]);
1746                 break;
1747         case LSC_SCODE_NPORT_USED:
1748                 data[0] = MBS_LOOP_ID_USED;
1749                 break;
1750         case LSC_SCODE_CMD_FAILED:
1751                 if (iop[1] == 0x0606) {
1752                         /*
1753                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1754                          * Target side acked.
1755                          */
1756                         data[0] = MBS_COMMAND_COMPLETE;
1757                         goto logio_done;
1758                 }
1759                 data[0] = MBS_COMMAND_ERROR;
1760                 break;
1761         case LSC_SCODE_NOXCB:
1762                 vha->hw->exch_starvation++;
1763                 if (vha->hw->exch_starvation > 5) {
1764                         ql_log(ql_log_warn, vha, 0xd046,
1765                             "Exchange starvation. Resetting RISC\n");
1766
1767                         vha->hw->exch_starvation = 0;
1768
1769                         if (IS_P3P_TYPE(vha->hw))
1770                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1771                         else
1772                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1773                         qla2xxx_wake_dpc(vha);
1774                 }
1775                 /* fall through */
1776         default:
1777                 data[0] = MBS_COMMAND_ERROR;
1778                 break;
1779         }
1780
1781         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1782             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1783             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1784                 sp->handle, fcport->d_id.b.domain,
1785             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1786             le16_to_cpu(logio->comp_status),
1787             le32_to_cpu(logio->io_parameter[0]),
1788             le32_to_cpu(logio->io_parameter[1]));
1789
1790 logio_done:
1791         sp->done(sp, 0);
1792 }
1793
1794 static void
1795 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1796 {
1797         const char func[] = "TMF-IOCB";
1798         const char *type;
1799         fc_port_t *fcport;
1800         srb_t *sp;
1801         struct srb_iocb *iocb;
1802         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1803
1804         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1805         if (!sp)
1806                 return;
1807
1808         iocb = &sp->u.iocb_cmd;
1809         type = sp->name;
1810         fcport = sp->fcport;
1811         iocb->u.tmf.data = QLA_SUCCESS;
1812
1813         if (sts->entry_status) {
1814                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1815                     "Async-%s error - hdl=%x entry-status(%x).\n",
1816                     type, sp->handle, sts->entry_status);
1817                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1818         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1819                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1820                     "Async-%s error - hdl=%x completion status(%x).\n",
1821                     type, sp->handle, sts->comp_status);
1822                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1823         } else if ((le16_to_cpu(sts->scsi_status) &
1824             SS_RESPONSE_INFO_LEN_VALID)) {
1825                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1826                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1827                             "Async-%s error - hdl=%x not enough response(%d).\n",
1828                             type, sp->handle, sts->rsp_data_len);
1829                 } else if (sts->data[3]) {
1830                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1831                             "Async-%s error - hdl=%x response(%x).\n",
1832                             type, sp->handle, sts->data[3]);
1833                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1834                 }
1835         }
1836
1837         if (iocb->u.tmf.data != QLA_SUCCESS)
1838                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1839                     (uint8_t *)sts, sizeof(*sts));
1840
1841         sp->done(sp, 0);
1842 }
1843
1844 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1845     void *tsk, srb_t *sp)
1846 {
1847         fc_port_t *fcport;
1848         struct srb_iocb *iocb;
1849         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1850         uint16_t        state_flags;
1851         struct nvmefc_fcp_req *fd;
1852         uint16_t        ret = 0;
1853
1854         iocb = &sp->u.iocb_cmd;
1855         fcport = sp->fcport;
1856         iocb->u.nvme.comp_status = le16_to_cpu(sts->comp_status);
1857         state_flags  = le16_to_cpu(sts->state_flags);
1858         fd = iocb->u.nvme.desc;
1859
1860         if (unlikely(iocb->u.nvme.aen_op))
1861                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1862
1863         /*
1864          * State flags: Bit 6 and 0.
1865          * If 0 is set, we don't care about 6.
1866          * both cases resp was dma'd to host buffer
1867          * if both are 0, that is good path case.
1868          * if six is set and 0 is clear, we need to
1869          * copy resp data from status iocb to resp buffer.
1870          */
1871         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1872                 iocb->u.nvme.rsp_pyld_len = 0;
1873         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1874                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1875         } else if (state_flags & SF_NVME_ERSP) {
1876                 uint32_t *inbuf, *outbuf;
1877                 uint16_t iter;
1878
1879                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1880                 outbuf = (uint32_t *)fd->rspaddr;
1881                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1882                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1883                 for (; iter; iter--)
1884                         *outbuf++ = swab32(*inbuf++);
1885         } else { /* unhandled case */
1886             ql_log(ql_log_warn, fcport->vha, 0x503a,
1887                 "NVME-%s error. Unhandled state_flags of %x\n",
1888                 sp->name, state_flags);
1889         }
1890
1891         fd->transferred_length = fd->payload_length -
1892             le32_to_cpu(sts->residual_len);
1893
1894         switch (le16_to_cpu(sts->comp_status)) {
1895         case CS_COMPLETE:
1896                 ret = QLA_SUCCESS;
1897                 break;
1898         case CS_ABORTED:
1899         case CS_RESET:
1900         case CS_PORT_UNAVAILABLE:
1901         case CS_PORT_LOGGED_OUT:
1902         case CS_PORT_BUSY:
1903                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1904                     "NVME-%s ERR Handling - hdl=%x completion status(%x) resid=%x  ox_id=%x\n",
1905                     sp->name, sp->handle, sts->comp_status,
1906                     le32_to_cpu(sts->residual_len), sts->ox_id);
1907                 fd->transferred_length = 0;
1908                 iocb->u.nvme.rsp_pyld_len = 0;
1909                 ret = QLA_ABORTED;
1910                 break;
1911         default:
1912                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1913                     "NVME-%s error - hdl=%x completion status(%x) resid=%x  ox_id=%x\n",
1914                     sp->name, sp->handle, sts->comp_status,
1915                     le32_to_cpu(sts->residual_len), sts->ox_id);
1916                 ret = QLA_FUNCTION_FAILED;
1917                 break;
1918         }
1919         sp->done(sp, ret);
1920 }
1921
1922 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
1923     struct vp_ctrl_entry_24xx *vce)
1924 {
1925         const char func[] = "CTRLVP-IOCB";
1926         srb_t *sp;
1927         int rval = QLA_SUCCESS;
1928
1929         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
1930         if (!sp)
1931                 return;
1932
1933         if (vce->entry_status != 0) {
1934                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
1935                     "%s: Failed to complete IOCB -- error status (%x)\n",
1936                     sp->name, vce->entry_status);
1937                 rval = QLA_FUNCTION_FAILED;
1938         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
1939                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
1940                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
1941                     sp->name, le16_to_cpu(vce->comp_status),
1942                     le16_to_cpu(vce->vp_idx_failed));
1943                 rval = QLA_FUNCTION_FAILED;
1944         } else {
1945                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
1946                     "Done %s.\n", __func__);
1947         }
1948
1949         sp->rc = rval;
1950         sp->done(sp, rval);
1951 }
1952
1953 /**
1954  * qla2x00_process_response_queue() - Process response queue entries.
1955  * @rsp: response queue
1956  */
1957 void
1958 qla2x00_process_response_queue(struct rsp_que *rsp)
1959 {
1960         struct scsi_qla_host *vha;
1961         struct qla_hw_data *ha = rsp->hw;
1962         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1963         sts_entry_t     *pkt;
1964         uint16_t        handle_cnt;
1965         uint16_t        cnt;
1966
1967         vha = pci_get_drvdata(ha->pdev);
1968
1969         if (!vha->flags.online)
1970                 return;
1971
1972         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1973                 pkt = (sts_entry_t *)rsp->ring_ptr;
1974
1975                 rsp->ring_index++;
1976                 if (rsp->ring_index == rsp->length) {
1977                         rsp->ring_index = 0;
1978                         rsp->ring_ptr = rsp->ring;
1979                 } else {
1980                         rsp->ring_ptr++;
1981                 }
1982
1983                 if (pkt->entry_status != 0) {
1984                         qla2x00_error_entry(vha, rsp, pkt);
1985                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1986                         wmb();
1987                         continue;
1988                 }
1989
1990                 switch (pkt->entry_type) {
1991                 case STATUS_TYPE:
1992                         qla2x00_status_entry(vha, rsp, pkt);
1993                         break;
1994                 case STATUS_TYPE_21:
1995                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1996                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1997                                 qla2x00_process_completed_request(vha, rsp->req,
1998                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1999                         }
2000                         break;
2001                 case STATUS_TYPE_22:
2002                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
2003                         for (cnt = 0; cnt < handle_cnt; cnt++) {
2004                                 qla2x00_process_completed_request(vha, rsp->req,
2005                                     ((sts22_entry_t *)pkt)->handle[cnt]);
2006                         }
2007                         break;
2008                 case STATUS_CONT_TYPE:
2009                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2010                         break;
2011                 case MBX_IOCB_TYPE:
2012                         qla2x00_mbx_iocb_entry(vha, rsp->req,
2013                             (struct mbx_entry *)pkt);
2014                         break;
2015                 case CT_IOCB_TYPE:
2016                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2017                         break;
2018                 default:
2019                         /* Type Not Supported. */
2020                         ql_log(ql_log_warn, vha, 0x504a,
2021                             "Received unknown response pkt type %x "
2022                             "entry status=%x.\n",
2023                             pkt->entry_type, pkt->entry_status);
2024                         break;
2025                 }
2026                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2027                 wmb();
2028         }
2029
2030         /* Adjust ring index */
2031         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2032 }
2033
2034 static inline void
2035 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2036                      uint32_t sense_len, struct rsp_que *rsp, int res)
2037 {
2038         struct scsi_qla_host *vha = sp->vha;
2039         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2040         uint32_t track_sense_len;
2041
2042         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2043                 sense_len = SCSI_SENSE_BUFFERSIZE;
2044
2045         SET_CMD_SENSE_LEN(sp, sense_len);
2046         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2047         track_sense_len = sense_len;
2048
2049         if (sense_len > par_sense_len)
2050                 sense_len = par_sense_len;
2051
2052         memcpy(cp->sense_buffer, sense_data, sense_len);
2053
2054         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2055         track_sense_len -= sense_len;
2056         SET_CMD_SENSE_LEN(sp, track_sense_len);
2057
2058         if (track_sense_len != 0) {
2059                 rsp->status_srb = sp;
2060                 cp->result = res;
2061         }
2062
2063         if (sense_len) {
2064                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2065                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2066                     sp->vha->host_no, cp->device->id, cp->device->lun,
2067                     cp);
2068                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2069                     cp->sense_buffer, sense_len);
2070         }
2071 }
2072
2073 struct scsi_dif_tuple {
2074         __be16 guard;       /* Checksum */
2075         __be16 app_tag;         /* APPL identifier */
2076         __be32 ref_tag;         /* Target LBA or indirect LBA */
2077 };
2078
2079 /*
2080  * Checks the guard or meta-data for the type of error
2081  * detected by the HBA. In case of errors, we set the
2082  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2083  * to indicate to the kernel that the HBA detected error.
2084  */
2085 static inline int
2086 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2087 {
2088         struct scsi_qla_host *vha = sp->vha;
2089         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2090         uint8_t         *ap = &sts24->data[12];
2091         uint8_t         *ep = &sts24->data[20];
2092         uint32_t        e_ref_tag, a_ref_tag;
2093         uint16_t        e_app_tag, a_app_tag;
2094         uint16_t        e_guard, a_guard;
2095
2096         /*
2097          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2098          * would make guard field appear at offset 2
2099          */
2100         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
2101         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
2102         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
2103         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
2104         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
2105         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
2106
2107         ql_dbg(ql_dbg_io, vha, 0x3023,
2108             "iocb(s) %p Returned STATUS.\n", sts24);
2109
2110         ql_dbg(ql_dbg_io, vha, 0x3024,
2111             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2112             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2113             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2114             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2115             a_app_tag, e_app_tag, a_guard, e_guard);
2116
2117         /*
2118          * Ignore sector if:
2119          * For type     3: ref & app tag is all 'f's
2120          * For type 0,1,2: app tag is all 'f's
2121          */
2122         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2123             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2124              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2125                 uint32_t blocks_done, resid;
2126                 sector_t lba_s = scsi_get_lba(cmd);
2127
2128                 /* 2TB boundary case covered automatically with this */
2129                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2130
2131                 resid = scsi_bufflen(cmd) - (blocks_done *
2132                     cmd->device->sector_size);
2133
2134                 scsi_set_resid(cmd, resid);
2135                 cmd->result = DID_OK << 16;
2136
2137                 /* Update protection tag */
2138                 if (scsi_prot_sg_count(cmd)) {
2139                         uint32_t i, j = 0, k = 0, num_ent;
2140                         struct scatterlist *sg;
2141                         struct t10_pi_tuple *spt;
2142
2143                         /* Patch the corresponding protection tags */
2144                         scsi_for_each_prot_sg(cmd, sg,
2145                             scsi_prot_sg_count(cmd), i) {
2146                                 num_ent = sg_dma_len(sg) / 8;
2147                                 if (k + num_ent < blocks_done) {
2148                                         k += num_ent;
2149                                         continue;
2150                                 }
2151                                 j = blocks_done - k - 1;
2152                                 k = blocks_done;
2153                                 break;
2154                         }
2155
2156                         if (k != blocks_done) {
2157                                 ql_log(ql_log_warn, vha, 0x302f,
2158                                     "unexpected tag values tag:lba=%x:%llx)\n",
2159                                     e_ref_tag, (unsigned long long)lba_s);
2160                                 return 1;
2161                         }
2162
2163                         spt = page_address(sg_page(sg)) + sg->offset;
2164                         spt += j;
2165
2166                         spt->app_tag = T10_PI_APP_ESCAPE;
2167                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2168                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2169                 }
2170
2171                 return 0;
2172         }
2173
2174         /* check guard */
2175         if (e_guard != a_guard) {
2176                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2177                     0x10, 0x1);
2178                 set_driver_byte(cmd, DRIVER_SENSE);
2179                 set_host_byte(cmd, DID_ABORT);
2180                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2181                 return 1;
2182         }
2183
2184         /* check ref tag */
2185         if (e_ref_tag != a_ref_tag) {
2186                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2187                     0x10, 0x3);
2188                 set_driver_byte(cmd, DRIVER_SENSE);
2189                 set_host_byte(cmd, DID_ABORT);
2190                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2191                 return 1;
2192         }
2193
2194         /* check appl tag */
2195         if (e_app_tag != a_app_tag) {
2196                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2197                     0x10, 0x2);
2198                 set_driver_byte(cmd, DRIVER_SENSE);
2199                 set_host_byte(cmd, DID_ABORT);
2200                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2201                 return 1;
2202         }
2203
2204         return 1;
2205 }
2206
2207 static void
2208 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2209                                   struct req_que *req, uint32_t index)
2210 {
2211         struct qla_hw_data *ha = vha->hw;
2212         srb_t *sp;
2213         uint16_t        comp_status;
2214         uint16_t        scsi_status;
2215         uint16_t thread_id;
2216         uint32_t rval = EXT_STATUS_OK;
2217         struct bsg_job *bsg_job = NULL;
2218         struct fc_bsg_request *bsg_request;
2219         struct fc_bsg_reply *bsg_reply;
2220         sts_entry_t *sts;
2221         struct sts_entry_24xx *sts24;
2222         sts = (sts_entry_t *) pkt;
2223         sts24 = (struct sts_entry_24xx *) pkt;
2224
2225         /* Validate handle. */
2226         if (index >= req->num_outstanding_cmds) {
2227                 ql_log(ql_log_warn, vha, 0x70af,
2228                     "Invalid SCSI completion handle 0x%x.\n", index);
2229                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2230                 return;
2231         }
2232
2233         sp = req->outstanding_cmds[index];
2234         if (!sp) {
2235                 ql_log(ql_log_warn, vha, 0x70b0,
2236                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2237                     req->id, index);
2238
2239                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2240                 return;
2241         }
2242
2243         /* Free outstanding command slot. */
2244         req->outstanding_cmds[index] = NULL;
2245         bsg_job = sp->u.bsg_job;
2246         bsg_request = bsg_job->request;
2247         bsg_reply = bsg_job->reply;
2248
2249         if (IS_FWI2_CAPABLE(ha)) {
2250                 comp_status = le16_to_cpu(sts24->comp_status);
2251                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2252         } else {
2253                 comp_status = le16_to_cpu(sts->comp_status);
2254                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2255         }
2256
2257         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2258         switch (comp_status) {
2259         case CS_COMPLETE:
2260                 if (scsi_status == 0) {
2261                         bsg_reply->reply_payload_rcv_len =
2262                                         bsg_job->reply_payload.payload_len;
2263                         vha->qla_stats.input_bytes +=
2264                                 bsg_reply->reply_payload_rcv_len;
2265                         vha->qla_stats.input_requests++;
2266                         rval = EXT_STATUS_OK;
2267                 }
2268                 goto done;
2269
2270         case CS_DATA_OVERRUN:
2271                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2272                     "Command completed with data overrun thread_id=%d\n",
2273                     thread_id);
2274                 rval = EXT_STATUS_DATA_OVERRUN;
2275                 break;
2276
2277         case CS_DATA_UNDERRUN:
2278                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2279                     "Command completed with data underrun thread_id=%d\n",
2280                     thread_id);
2281                 rval = EXT_STATUS_DATA_UNDERRUN;
2282                 break;
2283         case CS_BIDIR_RD_OVERRUN:
2284                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2285                     "Command completed with read data overrun thread_id=%d\n",
2286                     thread_id);
2287                 rval = EXT_STATUS_DATA_OVERRUN;
2288                 break;
2289
2290         case CS_BIDIR_RD_WR_OVERRUN:
2291                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2292                     "Command completed with read and write data overrun "
2293                     "thread_id=%d\n", thread_id);
2294                 rval = EXT_STATUS_DATA_OVERRUN;
2295                 break;
2296
2297         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2298                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2299                     "Command completed with read data over and write data "
2300                     "underrun thread_id=%d\n", thread_id);
2301                 rval = EXT_STATUS_DATA_OVERRUN;
2302                 break;
2303
2304         case CS_BIDIR_RD_UNDERRUN:
2305                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2306                     "Command completed with read data underrun "
2307                     "thread_id=%d\n", thread_id);
2308                 rval = EXT_STATUS_DATA_UNDERRUN;
2309                 break;
2310
2311         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2312                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2313                     "Command completed with read data under and write data "
2314                     "overrun thread_id=%d\n", thread_id);
2315                 rval = EXT_STATUS_DATA_UNDERRUN;
2316                 break;
2317
2318         case CS_BIDIR_RD_WR_UNDERRUN:
2319                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2320                     "Command completed with read and write data underrun "
2321                     "thread_id=%d\n", thread_id);
2322                 rval = EXT_STATUS_DATA_UNDERRUN;
2323                 break;
2324
2325         case CS_BIDIR_DMA:
2326                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2327                     "Command completed with data DMA error thread_id=%d\n",
2328                     thread_id);
2329                 rval = EXT_STATUS_DMA_ERR;
2330                 break;
2331
2332         case CS_TIMEOUT:
2333                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2334                     "Command completed with timeout thread_id=%d\n",
2335                     thread_id);
2336                 rval = EXT_STATUS_TIMEOUT;
2337                 break;
2338         default:
2339                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2340                     "Command completed with completion status=0x%x "
2341                     "thread_id=%d\n", comp_status, thread_id);
2342                 rval = EXT_STATUS_ERR;
2343                 break;
2344         }
2345         bsg_reply->reply_payload_rcv_len = 0;
2346
2347 done:
2348         /* Return the vendor specific reply to API */
2349         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2350         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2351         /* Always return DID_OK, bsg will send the vendor specific response
2352          * in this case only */
2353         sp->done(sp, DID_OK << 16);
2354
2355 }
2356
2357 /**
2358  * qla2x00_status_entry() - Process a Status IOCB entry.
2359  * @vha: SCSI driver HA context
2360  * @rsp: response queue
2361  * @pkt: Entry pointer
2362  */
2363 static void
2364 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2365 {
2366         srb_t           *sp;
2367         fc_port_t       *fcport;
2368         struct scsi_cmnd *cp;
2369         sts_entry_t *sts;
2370         struct sts_entry_24xx *sts24;
2371         uint16_t        comp_status;
2372         uint16_t        scsi_status;
2373         uint16_t        ox_id;
2374         uint8_t         lscsi_status;
2375         int32_t         resid;
2376         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2377             fw_resid_len;
2378         uint8_t         *rsp_info, *sense_data;
2379         struct qla_hw_data *ha = vha->hw;
2380         uint32_t handle;
2381         uint16_t que;
2382         struct req_que *req;
2383         int logit = 1;
2384         int res = 0;
2385         uint16_t state_flags = 0;
2386         uint16_t retry_delay = 0;
2387
2388         sts = (sts_entry_t *) pkt;
2389         sts24 = (struct sts_entry_24xx *) pkt;
2390         if (IS_FWI2_CAPABLE(ha)) {
2391                 comp_status = le16_to_cpu(sts24->comp_status);
2392                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2393                 state_flags = le16_to_cpu(sts24->state_flags);
2394         } else {
2395                 comp_status = le16_to_cpu(sts->comp_status);
2396                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2397         }
2398         handle = (uint32_t) LSW(sts->handle);
2399         que = MSW(sts->handle);
2400         req = ha->req_q_map[que];
2401
2402         /* Check for invalid queue pointer */
2403         if (req == NULL ||
2404             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2405                 ql_dbg(ql_dbg_io, vha, 0x3059,
2406                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2407                     "que=%u.\n", sts->handle, req, que);
2408                 return;
2409         }
2410
2411         /* Validate handle. */
2412         if (handle < req->num_outstanding_cmds) {
2413                 sp = req->outstanding_cmds[handle];
2414                 if (!sp) {
2415                         ql_dbg(ql_dbg_io, vha, 0x3075,
2416                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2417                             __func__, vha->host_no, sts->handle);
2418                         return;
2419                 }
2420         } else {
2421                 ql_dbg(ql_dbg_io, vha, 0x3017,
2422                     "Invalid status handle, out of range (0x%x).\n",
2423                     sts->handle);
2424
2425                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2426                         if (IS_P3P_TYPE(ha))
2427                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2428                         else
2429                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2430                         qla2xxx_wake_dpc(vha);
2431                 }
2432                 return;
2433         }
2434
2435         if (sp->cmd_type != TYPE_SRB) {
2436                 req->outstanding_cmds[handle] = NULL;
2437                 ql_dbg(ql_dbg_io, vha, 0x3015,
2438                     "Unknown sp->cmd_type %x %p).\n",
2439                     sp->cmd_type, sp);
2440                 return;
2441         }
2442
2443         /* NVME completion. */
2444         if (sp->type == SRB_NVME_CMD) {
2445                 req->outstanding_cmds[handle] = NULL;
2446                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2447                 return;
2448         }
2449
2450         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2451                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2452                 return;
2453         }
2454
2455         /* Task Management completion. */
2456         if (sp->type == SRB_TM_CMD) {
2457                 qla24xx_tm_iocb_entry(vha, req, pkt);
2458                 return;
2459         }
2460
2461         /* Fast path completion. */
2462         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2463                 qla2x00_process_completed_request(vha, req, handle);
2464
2465                 return;
2466         }
2467
2468         req->outstanding_cmds[handle] = NULL;
2469         cp = GET_CMD_SP(sp);
2470         if (cp == NULL) {
2471                 ql_dbg(ql_dbg_io, vha, 0x3018,
2472                     "Command already returned (0x%x/%p).\n",
2473                     sts->handle, sp);
2474
2475                 return;
2476         }
2477
2478         lscsi_status = scsi_status & STATUS_MASK;
2479
2480         fcport = sp->fcport;
2481
2482         ox_id = 0;
2483         sense_len = par_sense_len = rsp_info_len = resid_len =
2484             fw_resid_len = 0;
2485         if (IS_FWI2_CAPABLE(ha)) {
2486                 if (scsi_status & SS_SENSE_LEN_VALID)
2487                         sense_len = le32_to_cpu(sts24->sense_len);
2488                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2489                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2490                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2491                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2492                 if (comp_status == CS_DATA_UNDERRUN)
2493                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2494                 rsp_info = sts24->data;
2495                 sense_data = sts24->data;
2496                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2497                 ox_id = le16_to_cpu(sts24->ox_id);
2498                 par_sense_len = sizeof(sts24->data);
2499                 /* Valid values of the retry delay timer are 0x1-0xffef */
2500                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
2501                         retry_delay = sts24->retry_delay & 0x3fff;
2502                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2503                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2504                             sts24->retry_delay >> 14, retry_delay);
2505                 }
2506         } else {
2507                 if (scsi_status & SS_SENSE_LEN_VALID)
2508                         sense_len = le16_to_cpu(sts->req_sense_length);
2509                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2510                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2511                 resid_len = le32_to_cpu(sts->residual_length);
2512                 rsp_info = sts->rsp_info;
2513                 sense_data = sts->req_sense_data;
2514                 par_sense_len = sizeof(sts->req_sense_data);
2515         }
2516
2517         /* Check for any FCP transport errors. */
2518         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2519                 /* Sense data lies beyond any FCP RESPONSE data. */
2520                 if (IS_FWI2_CAPABLE(ha)) {
2521                         sense_data += rsp_info_len;
2522                         par_sense_len -= rsp_info_len;
2523                 }
2524                 if (rsp_info_len > 3 && rsp_info[3]) {
2525                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2526                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2527                             rsp_info_len, rsp_info[3]);
2528
2529                         res = DID_BUS_BUSY << 16;
2530                         goto out;
2531                 }
2532         }
2533
2534         /* Check for overrun. */
2535         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2536             scsi_status & SS_RESIDUAL_OVER)
2537                 comp_status = CS_DATA_OVERRUN;
2538
2539         /*
2540          * Check retry_delay_timer value if we receive a busy or
2541          * queue full.
2542          */
2543         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2544             lscsi_status == SAM_STAT_BUSY)
2545                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2546
2547         /*
2548          * Based on Host and scsi status generate status code for Linux
2549          */
2550         switch (comp_status) {
2551         case CS_COMPLETE:
2552         case CS_QUEUE_FULL:
2553                 if (scsi_status == 0) {
2554                         res = DID_OK << 16;
2555                         break;
2556                 }
2557                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2558                         resid = resid_len;
2559                         scsi_set_resid(cp, resid);
2560
2561                         if (!lscsi_status &&
2562                             ((unsigned)(scsi_bufflen(cp) - resid) <
2563                              cp->underflow)) {
2564                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2565                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2566                                     resid, scsi_bufflen(cp));
2567
2568                                 res = DID_ERROR << 16;
2569                                 break;
2570                         }
2571                 }
2572                 res = DID_OK << 16 | lscsi_status;
2573
2574                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2575                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2576                             "QUEUE FULL detected.\n");
2577                         break;
2578                 }
2579                 logit = 0;
2580                 if (lscsi_status != SS_CHECK_CONDITION)
2581                         break;
2582
2583                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2584                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2585                         break;
2586
2587                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2588                     rsp, res);
2589                 break;
2590
2591         case CS_DATA_UNDERRUN:
2592                 /* Use F/W calculated residual length. */
2593                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2594                 scsi_set_resid(cp, resid);
2595                 if (scsi_status & SS_RESIDUAL_UNDER) {
2596                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2597                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2598                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2599                                     resid, scsi_bufflen(cp));
2600
2601                                 res = DID_ERROR << 16 | lscsi_status;
2602                                 goto check_scsi_status;
2603                         }
2604
2605                         if (!lscsi_status &&
2606                             ((unsigned)(scsi_bufflen(cp) - resid) <
2607                             cp->underflow)) {
2608                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2609                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2610                                     resid, scsi_bufflen(cp));
2611
2612                                 res = DID_ERROR << 16;
2613                                 break;
2614                         }
2615                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2616                             lscsi_status != SAM_STAT_BUSY) {
2617                         /*
2618                          * scsi status of task set and busy are considered to be
2619                          * task not completed.
2620                          */
2621
2622                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2623                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2624                             resid, scsi_bufflen(cp));
2625
2626                         res = DID_ERROR << 16 | lscsi_status;
2627                         goto check_scsi_status;
2628                 } else {
2629                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2630                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2631                             scsi_status, lscsi_status);
2632                 }
2633
2634                 res = DID_OK << 16 | lscsi_status;
2635                 logit = 0;
2636
2637 check_scsi_status:
2638                 /*
2639                  * Check to see if SCSI Status is non zero. If so report SCSI
2640                  * Status.
2641                  */
2642                 if (lscsi_status != 0) {
2643                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2644                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2645                                     "QUEUE FULL detected.\n");
2646                                 logit = 1;
2647                                 break;
2648                         }
2649                         if (lscsi_status != SS_CHECK_CONDITION)
2650                                 break;
2651
2652                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2653                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2654                                 break;
2655
2656                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2657                             sense_len, rsp, res);
2658                 }
2659                 break;
2660
2661         case CS_PORT_LOGGED_OUT:
2662         case CS_PORT_CONFIG_CHG:
2663         case CS_PORT_BUSY:
2664         case CS_INCOMPLETE:
2665         case CS_PORT_UNAVAILABLE:
2666         case CS_TIMEOUT:
2667         case CS_RESET:
2668
2669                 /*
2670                  * We are going to have the fc class block the rport
2671                  * while we try to recover so instruct the mid layer
2672                  * to requeue until the class decides how to handle this.
2673                  */
2674                 res = DID_TRANSPORT_DISRUPTED << 16;
2675
2676                 if (comp_status == CS_TIMEOUT) {
2677                         if (IS_FWI2_CAPABLE(ha))
2678                                 break;
2679                         else if ((le16_to_cpu(sts->status_flags) &
2680                             SF_LOGOUT_SENT) == 0)
2681                                 break;
2682                 }
2683
2684                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2685                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2686                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2687                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2688                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2689                                 port_state_str[atomic_read(&fcport->state)],
2690                                 comp_status);
2691
2692                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2693                         qlt_schedule_sess_for_deletion(fcport);
2694                 }
2695
2696                 break;
2697
2698         case CS_ABORTED:
2699                 res = DID_RESET << 16;
2700                 break;
2701
2702         case CS_DIF_ERROR:
2703                 logit = qla2x00_handle_dif_error(sp, sts24);
2704                 res = cp->result;
2705                 break;
2706
2707         case CS_TRANSPORT:
2708                 res = DID_ERROR << 16;
2709
2710                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2711                         break;
2712
2713                 if (state_flags & BIT_4)
2714                         scmd_printk(KERN_WARNING, cp,
2715                             "Unsupported device '%s' found.\n",
2716                             cp->device->vendor);
2717                 break;
2718
2719         default:
2720                 res = DID_ERROR << 16;
2721                 break;
2722         }
2723
2724 out:
2725         if (logit)
2726                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2727                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2728                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2729                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2730                     comp_status, scsi_status, res, vha->host_no,
2731                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2732                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2733                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2734                     resid_len, fw_resid_len, sp, cp);
2735
2736         if (rsp->status_srb == NULL)
2737                 sp->done(sp, res);
2738 }
2739
2740 /**
2741  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2742  * @rsp: response queue
2743  * @pkt: Entry pointer
2744  *
2745  * Extended sense data.
2746  */
2747 static void
2748 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2749 {
2750         uint8_t sense_sz = 0;
2751         struct qla_hw_data *ha = rsp->hw;
2752         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2753         srb_t *sp = rsp->status_srb;
2754         struct scsi_cmnd *cp;
2755         uint32_t sense_len;
2756         uint8_t *sense_ptr;
2757
2758         if (!sp || !GET_CMD_SENSE_LEN(sp))
2759                 return;
2760
2761         sense_len = GET_CMD_SENSE_LEN(sp);
2762         sense_ptr = GET_CMD_SENSE_PTR(sp);
2763
2764         cp = GET_CMD_SP(sp);
2765         if (cp == NULL) {
2766                 ql_log(ql_log_warn, vha, 0x3025,
2767                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2768
2769                 rsp->status_srb = NULL;
2770                 return;
2771         }
2772
2773         if (sense_len > sizeof(pkt->data))
2774                 sense_sz = sizeof(pkt->data);
2775         else
2776                 sense_sz = sense_len;
2777
2778         /* Move sense data. */
2779         if (IS_FWI2_CAPABLE(ha))
2780                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2781         memcpy(sense_ptr, pkt->data, sense_sz);
2782         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2783                 sense_ptr, sense_sz);
2784
2785         sense_len -= sense_sz;
2786         sense_ptr += sense_sz;
2787
2788         SET_CMD_SENSE_PTR(sp, sense_ptr);
2789         SET_CMD_SENSE_LEN(sp, sense_len);
2790
2791         /* Place command on done queue. */
2792         if (sense_len == 0) {
2793                 rsp->status_srb = NULL;
2794                 sp->done(sp, cp->result);
2795         }
2796 }
2797
2798 /**
2799  * qla2x00_error_entry() - Process an error entry.
2800  * @vha: SCSI driver HA context
2801  * @rsp: response queue
2802  * @pkt: Entry pointer
2803  * return : 1=allow further error analysis. 0=no additional error analysis.
2804  */
2805 static int
2806 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2807 {
2808         srb_t *sp;
2809         struct qla_hw_data *ha = vha->hw;
2810         const char func[] = "ERROR-IOCB";
2811         uint16_t que = MSW(pkt->handle);
2812         struct req_que *req = NULL;
2813         int res = DID_ERROR << 16;
2814
2815         ql_dbg(ql_dbg_async, vha, 0x502a,
2816             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2817             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2818
2819         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2820                 goto fatal;
2821
2822         req = ha->req_q_map[que];
2823
2824         if (pkt->entry_status & RF_BUSY)
2825                 res = DID_BUS_BUSY << 16;
2826
2827         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2828                 return 0;
2829
2830         switch (pkt->entry_type) {
2831         case NOTIFY_ACK_TYPE:
2832         case STATUS_TYPE:
2833         case STATUS_CONT_TYPE:
2834         case LOGINOUT_PORT_IOCB_TYPE:
2835         case CT_IOCB_TYPE:
2836         case ELS_IOCB_TYPE:
2837         case ABORT_IOCB_TYPE:
2838         case MBX_IOCB_TYPE:
2839                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2840                 if (sp) {
2841                         sp->done(sp, res);
2842                         return 0;
2843                 }
2844                 break;
2845
2846         case ABTS_RESP_24XX:
2847         case CTIO_TYPE7:
2848         case CTIO_CRC2:
2849         default:
2850                 return 1;
2851         }
2852 fatal:
2853         ql_log(ql_log_warn, vha, 0x5030,
2854             "Error entry - invalid handle/queue (%04x).\n", que);
2855         return 0;
2856 }
2857
2858 /**
2859  * qla24xx_mbx_completion() - Process mailbox command completions.
2860  * @vha: SCSI driver HA context
2861  * @mb0: Mailbox0 register
2862  */
2863 static void
2864 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2865 {
2866         uint16_t        cnt;
2867         uint32_t        mboxes;
2868         uint16_t __iomem *wptr;
2869         struct qla_hw_data *ha = vha->hw;
2870         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2871
2872         /* Read all mbox registers? */
2873         WARN_ON_ONCE(ha->mbx_count > 32);
2874         mboxes = (1ULL << ha->mbx_count) - 1;
2875         if (!ha->mcp)
2876                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2877         else
2878                 mboxes = ha->mcp->in_mb;
2879
2880         /* Load return mailbox registers. */
2881         ha->flags.mbox_int = 1;
2882         ha->mailbox_out[0] = mb0;
2883         mboxes >>= 1;
2884         wptr = (uint16_t __iomem *)&reg->mailbox1;
2885
2886         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2887                 if (mboxes & BIT_0)
2888                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2889
2890                 mboxes >>= 1;
2891                 wptr++;
2892         }
2893 }
2894
2895 static void
2896 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2897         struct abort_entry_24xx *pkt)
2898 {
2899         const char func[] = "ABT_IOCB";
2900         srb_t *sp;
2901         struct srb_iocb *abt;
2902
2903         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2904         if (!sp)
2905                 return;
2906
2907         abt = &sp->u.iocb_cmd;
2908         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
2909         sp->done(sp, 0);
2910 }
2911
2912 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
2913     struct pt_ls4_request *pkt, struct req_que *req)
2914 {
2915         srb_t *sp;
2916         const char func[] = "LS4_IOCB";
2917         uint16_t comp_status;
2918
2919         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2920         if (!sp)
2921                 return;
2922
2923         comp_status = le16_to_cpu(pkt->status);
2924         sp->done(sp, comp_status);
2925 }
2926
2927 /**
2928  * qla24xx_process_response_queue() - Process response queue entries.
2929  * @vha: SCSI driver HA context
2930  * @rsp: response queue
2931  */
2932 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2933         struct rsp_que *rsp)
2934 {
2935         struct sts_entry_24xx *pkt;
2936         struct qla_hw_data *ha = vha->hw;
2937
2938         if (!ha->flags.fw_started)
2939                 return;
2940
2941         if (rsp->qpair->cpuid != smp_processor_id())
2942                 qla_cpu_update(rsp->qpair, smp_processor_id());
2943
2944         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2945                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2946
2947                 rsp->ring_index++;
2948                 if (rsp->ring_index == rsp->length) {
2949                         rsp->ring_index = 0;
2950                         rsp->ring_ptr = rsp->ring;
2951                 } else {
2952                         rsp->ring_ptr++;
2953                 }
2954
2955                 if (pkt->entry_status != 0) {
2956                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
2957                                 goto process_err;
2958
2959                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2960                         wmb();
2961                         continue;
2962                 }
2963 process_err:
2964
2965                 switch (pkt->entry_type) {
2966                 case STATUS_TYPE:
2967                         qla2x00_status_entry(vha, rsp, pkt);
2968                         break;
2969                 case STATUS_CONT_TYPE:
2970                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2971                         break;
2972                 case VP_RPT_ID_IOCB_TYPE:
2973                         qla24xx_report_id_acquisition(vha,
2974                             (struct vp_rpt_id_entry_24xx *)pkt);
2975                         break;
2976                 case LOGINOUT_PORT_IOCB_TYPE:
2977                         qla24xx_logio_entry(vha, rsp->req,
2978                             (struct logio_entry_24xx *)pkt);
2979                         break;
2980                 case CT_IOCB_TYPE:
2981                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2982                         break;
2983                 case ELS_IOCB_TYPE:
2984                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2985                         break;
2986                 case ABTS_RECV_24XX:
2987                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
2988                                 /* ensure that the ATIO queue is empty */
2989                                 qlt_handle_abts_recv(vha, rsp,
2990                                     (response_t *)pkt);
2991                                 break;
2992                         } else {
2993                                 qlt_24xx_process_atio_queue(vha, 1);
2994                         }
2995                         /* fall through */
2996                 case ABTS_RESP_24XX:
2997                 case CTIO_TYPE7:
2998                 case CTIO_CRC2:
2999                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3000                         break;
3001                 case PT_LS4_REQUEST:
3002                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3003                             rsp->req);
3004                         break;
3005                 case NOTIFY_ACK_TYPE:
3006                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3007                                 qlt_response_pkt_all_vps(vha, rsp,
3008                                     (response_t *)pkt);
3009                         else
3010                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3011                                         (struct nack_to_isp *)pkt);
3012                         break;
3013                 case MARKER_TYPE:
3014                         /* Do nothing in this case, this check is to prevent it
3015                          * from falling into default case
3016                          */
3017                         break;
3018                 case ABORT_IOCB_TYPE:
3019                         qla24xx_abort_iocb_entry(vha, rsp->req,
3020                             (struct abort_entry_24xx *)pkt);
3021                         break;
3022                 case MBX_IOCB_TYPE:
3023                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3024                             (struct mbx_24xx_entry *)pkt);
3025                         break;
3026                 case VP_CTRL_IOCB_TYPE:
3027                         qla_ctrlvp_completed(vha, rsp->req,
3028                             (struct vp_ctrl_entry_24xx *)pkt);
3029                         break;
3030                 default:
3031                         /* Type Not Supported. */
3032                         ql_dbg(ql_dbg_async, vha, 0x5042,
3033                             "Received unknown response pkt type %x "
3034                             "entry status=%x.\n",
3035                             pkt->entry_type, pkt->entry_status);
3036                         break;
3037                 }
3038                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3039                 wmb();
3040         }
3041
3042         /* Adjust ring index */
3043         if (IS_P3P_TYPE(ha)) {
3044                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3045                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
3046         } else {
3047                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
3048         }
3049 }
3050
3051 static void
3052 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3053 {
3054         int rval;
3055         uint32_t cnt;
3056         struct qla_hw_data *ha = vha->hw;
3057         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3058
3059         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3060             !IS_QLA27XX(ha))
3061                 return;
3062
3063         rval = QLA_SUCCESS;
3064         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3065         RD_REG_DWORD(&reg->iobase_addr);
3066         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3067         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3068             rval == QLA_SUCCESS; cnt--) {
3069                 if (cnt) {
3070                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3071                         udelay(10);
3072                 } else
3073                         rval = QLA_FUNCTION_TIMEOUT;
3074         }
3075         if (rval == QLA_SUCCESS)
3076                 goto next_test;
3077
3078         rval = QLA_SUCCESS;
3079         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3080         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3081             rval == QLA_SUCCESS; cnt--) {
3082                 if (cnt) {
3083                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3084                         udelay(10);
3085                 } else
3086                         rval = QLA_FUNCTION_TIMEOUT;
3087         }
3088         if (rval != QLA_SUCCESS)
3089                 goto done;
3090
3091 next_test:
3092         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3093                 ql_log(ql_log_info, vha, 0x504c,
3094                     "Additional code -- 0x55AA.\n");
3095
3096 done:
3097         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3098         RD_REG_DWORD(&reg->iobase_window);
3099 }
3100
3101 /**
3102  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3103  * @irq:
3104  * @dev_id: SCSI driver HA context
3105  *
3106  * Called by system whenever the host adapter generates an interrupt.
3107  *
3108  * Returns handled flag.
3109  */
3110 irqreturn_t
3111 qla24xx_intr_handler(int irq, void *dev_id)
3112 {
3113         scsi_qla_host_t *vha;
3114         struct qla_hw_data *ha;
3115         struct device_reg_24xx __iomem *reg;
3116         int             status;
3117         unsigned long   iter;
3118         uint32_t        stat;
3119         uint32_t        hccr;
3120         uint16_t        mb[8];
3121         struct rsp_que *rsp;
3122         unsigned long   flags;
3123
3124         rsp = (struct rsp_que *) dev_id;
3125         if (!rsp) {
3126                 ql_log(ql_log_info, NULL, 0x5059,
3127                     "%s: NULL response queue pointer.\n", __func__);
3128                 return IRQ_NONE;
3129         }
3130
3131         ha = rsp->hw;
3132         reg = &ha->iobase->isp24;
3133         status = 0;
3134
3135         if (unlikely(pci_channel_offline(ha->pdev)))
3136                 return IRQ_HANDLED;
3137
3138         spin_lock_irqsave(&ha->hardware_lock, flags);
3139         vha = pci_get_drvdata(ha->pdev);
3140         for (iter = 50; iter--; ) {
3141                 stat = RD_REG_DWORD(&reg->host_status);
3142                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3143                         break;
3144                 if (stat & HSRX_RISC_PAUSED) {
3145                         if (unlikely(pci_channel_offline(ha->pdev)))
3146                                 break;
3147
3148                         hccr = RD_REG_DWORD(&reg->hccr);
3149
3150                         ql_log(ql_log_warn, vha, 0x504b,
3151                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3152                             hccr);
3153
3154                         qla2xxx_check_risc_status(vha);
3155
3156                         ha->isp_ops->fw_dump(vha, 1);
3157                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3158                         break;
3159                 } else if ((stat & HSRX_RISC_INT) == 0)
3160                         break;
3161
3162                 switch (stat & 0xff) {
3163                 case INTR_ROM_MB_SUCCESS:
3164                 case INTR_ROM_MB_FAILED:
3165                 case INTR_MB_SUCCESS:
3166                 case INTR_MB_FAILED:
3167                         qla24xx_mbx_completion(vha, MSW(stat));
3168                         status |= MBX_INTERRUPT;
3169
3170                         break;
3171                 case INTR_ASYNC_EVENT:
3172                         mb[0] = MSW(stat);
3173                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3174                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3175                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3176                         qla2x00_async_event(vha, rsp, mb);
3177                         break;
3178                 case INTR_RSP_QUE_UPDATE:
3179                 case INTR_RSP_QUE_UPDATE_83XX:
3180                         qla24xx_process_response_queue(vha, rsp);
3181                         break;
3182                 case INTR_ATIO_QUE_UPDATE_27XX:
3183                 case INTR_ATIO_QUE_UPDATE:{
3184                         unsigned long flags2;
3185                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3186                         qlt_24xx_process_atio_queue(vha, 1);
3187                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3188                         break;
3189                 }
3190                 case INTR_ATIO_RSP_QUE_UPDATE: {
3191                         unsigned long flags2;
3192                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3193                         qlt_24xx_process_atio_queue(vha, 1);
3194                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3195
3196                         qla24xx_process_response_queue(vha, rsp);
3197                         break;
3198                 }
3199                 default:
3200                         ql_dbg(ql_dbg_async, vha, 0x504f,
3201                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3202                         break;
3203                 }
3204                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3205                 RD_REG_DWORD_RELAXED(&reg->hccr);
3206                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3207                         ndelay(3500);
3208         }
3209         qla2x00_handle_mbx_completion(ha, status);
3210         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3211
3212         return IRQ_HANDLED;
3213 }
3214
3215 static irqreturn_t
3216 qla24xx_msix_rsp_q(int irq, void *dev_id)
3217 {
3218         struct qla_hw_data *ha;
3219         struct rsp_que *rsp;
3220         struct device_reg_24xx __iomem *reg;
3221         struct scsi_qla_host *vha;
3222         unsigned long flags;
3223
3224         rsp = (struct rsp_que *) dev_id;
3225         if (!rsp) {
3226                 ql_log(ql_log_info, NULL, 0x505a,
3227                     "%s: NULL response queue pointer.\n", __func__);
3228                 return IRQ_NONE;
3229         }
3230         ha = rsp->hw;
3231         reg = &ha->iobase->isp24;
3232
3233         spin_lock_irqsave(&ha->hardware_lock, flags);
3234
3235         vha = pci_get_drvdata(ha->pdev);
3236         qla24xx_process_response_queue(vha, rsp);
3237         if (!ha->flags.disable_msix_handshake) {
3238                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3239                 RD_REG_DWORD_RELAXED(&reg->hccr);
3240         }
3241         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3242
3243         return IRQ_HANDLED;
3244 }
3245
3246 static irqreturn_t
3247 qla24xx_msix_default(int irq, void *dev_id)
3248 {
3249         scsi_qla_host_t *vha;
3250         struct qla_hw_data *ha;
3251         struct rsp_que *rsp;
3252         struct device_reg_24xx __iomem *reg;
3253         int             status;
3254         uint32_t        stat;
3255         uint32_t        hccr;
3256         uint16_t        mb[8];
3257         unsigned long flags;
3258
3259         rsp = (struct rsp_que *) dev_id;
3260         if (!rsp) {
3261                 ql_log(ql_log_info, NULL, 0x505c,
3262                     "%s: NULL response queue pointer.\n", __func__);
3263                 return IRQ_NONE;
3264         }
3265         ha = rsp->hw;
3266         reg = &ha->iobase->isp24;
3267         status = 0;
3268
3269         spin_lock_irqsave(&ha->hardware_lock, flags);
3270         vha = pci_get_drvdata(ha->pdev);
3271         do {
3272                 stat = RD_REG_DWORD(&reg->host_status);
3273                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3274                         break;
3275                 if (stat & HSRX_RISC_PAUSED) {
3276                         if (unlikely(pci_channel_offline(ha->pdev)))
3277                                 break;
3278
3279                         hccr = RD_REG_DWORD(&reg->hccr);
3280
3281                         ql_log(ql_log_info, vha, 0x5050,
3282                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3283                             hccr);
3284
3285                         qla2xxx_check_risc_status(vha);
3286
3287                         ha->isp_ops->fw_dump(vha, 1);
3288                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3289                         break;
3290                 } else if ((stat & HSRX_RISC_INT) == 0)
3291                         break;
3292
3293                 switch (stat & 0xff) {
3294                 case INTR_ROM_MB_SUCCESS:
3295                 case INTR_ROM_MB_FAILED:
3296                 case INTR_MB_SUCCESS:
3297                 case INTR_MB_FAILED:
3298                         qla24xx_mbx_completion(vha, MSW(stat));
3299                         status |= MBX_INTERRUPT;
3300
3301                         break;
3302                 case INTR_ASYNC_EVENT:
3303                         mb[0] = MSW(stat);
3304                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3305                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3306                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3307                         qla2x00_async_event(vha, rsp, mb);
3308                         break;
3309                 case INTR_RSP_QUE_UPDATE:
3310                 case INTR_RSP_QUE_UPDATE_83XX:
3311                         qla24xx_process_response_queue(vha, rsp);
3312                         break;
3313                 case INTR_ATIO_QUE_UPDATE_27XX:
3314                 case INTR_ATIO_QUE_UPDATE:{
3315                         unsigned long flags2;
3316                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3317                         qlt_24xx_process_atio_queue(vha, 1);
3318                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3319                         break;
3320                 }
3321                 case INTR_ATIO_RSP_QUE_UPDATE: {
3322                         unsigned long flags2;
3323                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
3324                         qlt_24xx_process_atio_queue(vha, 1);
3325                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
3326
3327                         qla24xx_process_response_queue(vha, rsp);
3328                         break;
3329                 }
3330                 default:
3331                         ql_dbg(ql_dbg_async, vha, 0x5051,
3332                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3333                         break;
3334                 }
3335                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3336         } while (0);
3337         qla2x00_handle_mbx_completion(ha, status);
3338         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3339
3340         return IRQ_HANDLED;
3341 }
3342
3343 irqreturn_t
3344 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3345 {
3346         struct qla_hw_data *ha;
3347         struct qla_qpair *qpair;
3348         struct device_reg_24xx __iomem *reg;
3349         unsigned long flags;
3350
3351         qpair = dev_id;
3352         if (!qpair) {
3353                 ql_log(ql_log_info, NULL, 0x505b,
3354                     "%s: NULL response queue pointer.\n", __func__);
3355                 return IRQ_NONE;
3356         }
3357         ha = qpair->hw;
3358
3359         /* Clear the interrupt, if enabled, for this response queue */
3360         if (unlikely(!ha->flags.disable_msix_handshake)) {
3361                 reg = &ha->iobase->isp24;
3362                 spin_lock_irqsave(&ha->hardware_lock, flags);
3363                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3364                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3365         }
3366
3367         queue_work(ha->wq, &qpair->q_work);
3368
3369         return IRQ_HANDLED;
3370 }
3371
3372 /* Interrupt handling helpers. */
3373
3374 struct qla_init_msix_entry {
3375         const char *name;
3376         irq_handler_t handler;
3377 };
3378
3379 static const struct qla_init_msix_entry msix_entries[] = {
3380         { "default", qla24xx_msix_default },
3381         { "rsp_q", qla24xx_msix_rsp_q },
3382         { "atio_q", qla83xx_msix_atio_q },
3383         { "qpair_multiq", qla2xxx_msix_rsp_q },
3384 };
3385
3386 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3387         { "qla2xxx (default)", qla82xx_msix_default },
3388         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3389 };
3390
3391 static int
3392 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3393 {
3394         int i, ret;
3395         struct qla_msix_entry *qentry;
3396         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3397         int min_vecs = QLA_BASE_VECTORS;
3398         struct irq_affinity desc = {
3399                 .pre_vectors = QLA_BASE_VECTORS,
3400         };
3401
3402         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3403             IS_ATIO_MSIX_CAPABLE(ha)) {
3404                 desc.pre_vectors++;
3405                 min_vecs++;
3406         }
3407
3408         if (USER_CTRL_IRQ(ha)) {
3409                 /* user wants to control IRQ setting for target mode */
3410                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3411                     ha->msix_count, PCI_IRQ_MSIX);
3412         } else
3413                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3414                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3415                     &desc);
3416
3417         if (ret < 0) {
3418                 ql_log(ql_log_fatal, vha, 0x00c7,
3419                     "MSI-X: Failed to enable support, "
3420                     "giving   up -- %d/%d.\n",
3421                     ha->msix_count, ret);
3422                 goto msix_out;
3423         } else if (ret < ha->msix_count) {
3424                 ql_log(ql_log_warn, vha, 0x00c6,
3425                     "MSI-X: Failed to enable support "
3426                      "with %d vectors, using %d vectors.\n",
3427                     ha->msix_count, ret);
3428                 ha->msix_count = ret;
3429                 /* Recalculate queue values */
3430                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3431                         ha->max_req_queues = ha->msix_count - 1;
3432
3433                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3434                         if (QLA_TGT_MODE_ENABLED())
3435                                 ha->max_req_queues--;
3436
3437                         ha->max_rsp_queues = ha->max_req_queues;
3438
3439                         ha->max_qpairs = ha->max_req_queues - 1;
3440                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3441                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3442                 }
3443         }
3444         ha->msix_entries = kcalloc(ha->msix_count,
3445                                    sizeof(struct qla_msix_entry),
3446                                    GFP_KERNEL);
3447         if (!ha->msix_entries) {
3448                 ql_log(ql_log_fatal, vha, 0x00c8,
3449                     "Failed to allocate memory for ha->msix_entries.\n");
3450                 ret = -ENOMEM;
3451                 goto msix_out;
3452         }
3453         ha->flags.msix_enabled = 1;
3454
3455         for (i = 0; i < ha->msix_count; i++) {
3456                 qentry = &ha->msix_entries[i];
3457                 qentry->vector = pci_irq_vector(ha->pdev, i);
3458                 qentry->entry = i;
3459                 qentry->have_irq = 0;
3460                 qentry->in_use = 0;
3461                 qentry->handle = NULL;
3462         }
3463
3464         /* Enable MSI-X vectors for the base queue */
3465         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3466                 qentry = &ha->msix_entries[i];
3467                 qentry->handle = rsp;
3468                 rsp->msix = qentry;
3469                 scnprintf(qentry->name, sizeof(qentry->name),
3470                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3471                 if (IS_P3P_TYPE(ha))
3472                         ret = request_irq(qentry->vector,
3473                                 qla82xx_msix_entries[i].handler,
3474                                 0, qla82xx_msix_entries[i].name, rsp);
3475                 else
3476                         ret = request_irq(qentry->vector,
3477                                 msix_entries[i].handler,
3478                                 0, qentry->name, rsp);
3479                 if (ret)
3480                         goto msix_register_fail;
3481                 qentry->have_irq = 1;
3482                 qentry->in_use = 1;
3483         }
3484
3485         /*
3486          * If target mode is enable, also request the vector for the ATIO
3487          * queue.
3488          */
3489         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3490             IS_ATIO_MSIX_CAPABLE(ha)) {
3491                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3492                 rsp->msix = qentry;
3493                 qentry->handle = rsp;
3494                 scnprintf(qentry->name, sizeof(qentry->name),
3495                     "qla2xxx%lu_%s", vha->host_no,
3496                     msix_entries[QLA_ATIO_VECTOR].name);
3497                 qentry->in_use = 1;
3498                 ret = request_irq(qentry->vector,
3499                         msix_entries[QLA_ATIO_VECTOR].handler,
3500                         0, qentry->name, rsp);
3501                 qentry->have_irq = 1;
3502         }
3503
3504 msix_register_fail:
3505         if (ret) {
3506                 ql_log(ql_log_fatal, vha, 0x00cb,
3507                     "MSI-X: unable to register handler -- %x/%d.\n",
3508                     qentry->vector, ret);
3509                 qla2x00_free_irqs(vha);
3510                 ha->mqenable = 0;
3511                 goto msix_out;
3512         }
3513
3514         /* Enable MSI-X vector for response queue update for queue 0 */
3515         if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
3516                 if (ha->msixbase && ha->mqiobase &&
3517                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3518                      ql2xmqsupport))
3519                         ha->mqenable = 1;
3520         } else
3521                 if (ha->mqiobase &&
3522                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3523                      ql2xmqsupport))
3524                         ha->mqenable = 1;
3525         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3526             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3527             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3528         ql_dbg(ql_dbg_init, vha, 0x0055,
3529             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3530             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3531
3532 msix_out:
3533         return ret;
3534 }
3535
3536 int
3537 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3538 {
3539         int ret = QLA_FUNCTION_FAILED;
3540         device_reg_t *reg = ha->iobase;
3541         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3542
3543         /* If possible, enable MSI-X. */
3544         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
3545             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
3546             !IS_QLAFX00(ha) && !IS_QLA27XX(ha)))
3547                 goto skip_msi;
3548
3549         if (ql2xenablemsix == 2)
3550                 goto skip_msix;
3551
3552         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3553                 (ha->pdev->subsystem_device == 0x7040 ||
3554                 ha->pdev->subsystem_device == 0x7041 ||
3555                 ha->pdev->subsystem_device == 0x1705)) {
3556                 ql_log(ql_log_warn, vha, 0x0034,
3557                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3558                         ha->pdev->subsystem_vendor,
3559                         ha->pdev->subsystem_device);
3560                 goto skip_msi;
3561         }
3562
3563         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3564                 ql_log(ql_log_warn, vha, 0x0035,
3565                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3566                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3567                 goto skip_msix;
3568         }
3569
3570         ret = qla24xx_enable_msix(ha, rsp);
3571         if (!ret) {
3572                 ql_dbg(ql_dbg_init, vha, 0x0036,
3573                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3574                     ha->chip_revision, ha->fw_attributes);
3575                 goto clear_risc_ints;
3576         }
3577
3578 skip_msix:
3579
3580         ql_log(ql_log_info, vha, 0x0037,
3581             "Falling back-to MSI mode -%d.\n", ret);
3582
3583         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3584             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3585             !IS_QLA27XX(ha))
3586                 goto skip_msi;
3587
3588         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3589         if (!ret) {
3590                 ql_dbg(ql_dbg_init, vha, 0x0038,
3591                     "MSI: Enabled.\n");
3592                 ha->flags.msi_enabled = 1;
3593         } else
3594                 ql_log(ql_log_warn, vha, 0x0039,
3595                     "Falling back-to INTa mode -- %d.\n", ret);
3596 skip_msi:
3597
3598         /* Skip INTx on ISP82xx. */
3599         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3600                 return QLA_FUNCTION_FAILED;
3601
3602         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3603             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3604             QLA2XXX_DRIVER_NAME, rsp);
3605         if (ret) {
3606                 ql_log(ql_log_warn, vha, 0x003a,
3607                     "Failed to reserve interrupt %d already in use.\n",
3608                     ha->pdev->irq);
3609                 goto fail;
3610         } else if (!ha->flags.msi_enabled) {
3611                 ql_dbg(ql_dbg_init, vha, 0x0125,
3612                     "INTa mode: Enabled.\n");
3613                 ha->flags.mr_intr_valid = 1;
3614         }
3615
3616 clear_risc_ints:
3617         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3618                 goto fail;
3619
3620         spin_lock_irq(&ha->hardware_lock);
3621         WRT_REG_WORD(&reg->isp.semaphore, 0);
3622         spin_unlock_irq(&ha->hardware_lock);
3623
3624 fail:
3625         return ret;
3626 }
3627
3628 void
3629 qla2x00_free_irqs(scsi_qla_host_t *vha)
3630 {
3631         struct qla_hw_data *ha = vha->hw;
3632         struct rsp_que *rsp;
3633         struct qla_msix_entry *qentry;
3634         int i;
3635
3636         /*
3637          * We need to check that ha->rsp_q_map is valid in case we are called
3638          * from a probe failure context.
3639          */
3640         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3641                 goto free_irqs;
3642         rsp = ha->rsp_q_map[0];
3643
3644         if (ha->flags.msix_enabled) {
3645                 for (i = 0; i < ha->msix_count; i++) {
3646                         qentry = &ha->msix_entries[i];
3647                         if (qentry->have_irq) {
3648                                 irq_set_affinity_notifier(qentry->vector, NULL);
3649                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3650                         }
3651                 }
3652                 kfree(ha->msix_entries);
3653                 ha->msix_entries = NULL;
3654                 ha->flags.msix_enabled = 0;
3655                 ql_dbg(ql_dbg_init, vha, 0x0042,
3656                         "Disabled MSI-X.\n");
3657         } else {
3658                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3659         }
3660
3661 free_irqs:
3662         pci_free_irq_vectors(ha->pdev);
3663 }
3664
3665 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3666         struct qla_msix_entry *msix, int vector_type)
3667 {
3668         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3669         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3670         int ret;
3671
3672         scnprintf(msix->name, sizeof(msix->name),
3673             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3674         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3675         if (ret) {
3676                 ql_log(ql_log_fatal, vha, 0x00e6,
3677                     "MSI-X: Unable to register handler -- %x/%d.\n",
3678                     msix->vector, ret);
3679                 return ret;
3680         }
3681         msix->have_irq = 1;
3682         msix->handle = qpair;
3683         return ret;
3684 }