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 static void qla27xx_process_purex_fpin(struct scsi_qla_host *vha,
  26         struct purex_item *item);
  27 static struct purex_item *qla24xx_alloc_purex_item(scsi_qla_host_t *vha,
  28         uint16_t size);
  29 static struct purex_item *qla24xx_copy_std_pkt(struct scsi_qla_host *vha,
  30         void *pkt);
  31 static struct purex_item *qla27xx_copy_fpin_pkt(struct scsi_qla_host *vha,
  32         void **pkt, struct rsp_que **rsp);
  33
  34 static void
  35 qla27xx_process_purex_fpin(struct scsi_qla_host *vha, struct purex_item *item)
  36 {
  37         void *pkt = &item->iocb;
  38         uint16_t pkt_size = item->size;
  39
  40         ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x508d,
  41                "%s: Enter\n", __func__);
  42
  43         ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x508e,
  44                "-------- ELS REQ -------\n");
  45         ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x508f,
  46                        pkt, pkt_size);
  47
  48         fc_host_fpin_rcv(vha->host, pkt_size, (char *)pkt);
  49 }
  50
  51 const char *const port_state_str[] = {
  52         "Unknown",
  53         "UNCONFIGURED",
  54         "DEAD",
  55         "LOST",
  56         "ONLINE"
  57 };
  58
  59 static void
  60 qla24xx_process_abts(struct scsi_qla_host *vha, struct purex_item *pkt)
  61 {
  62         struct abts_entry_24xx *abts =
  63             (struct abts_entry_24xx *)&pkt->iocb;
  64         struct qla_hw_data *ha = vha->hw;
  65         struct els_entry_24xx *rsp_els;
  66         struct abts_entry_24xx *abts_rsp;
  67         dma_addr_t dma;
  68         uint32_t fctl;
  69         int rval;
  70
  71         ql_dbg(ql_dbg_init, vha, 0x0286, "%s: entered.\n", __func__);
  72
  73         ql_log(ql_log_warn, vha, 0x0287,
  74             "Processing ABTS xchg=%#x oxid=%#x rxid=%#x seqid=%#x seqcnt=%#x\n",
  75             abts->rx_xch_addr_to_abort, abts->ox_id, abts->rx_id,
  76             abts->seq_id, abts->seq_cnt);
  77         ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x0287,
  78             "-------- ABTS RCV -------\n");
  79         ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x0287,
  80             (uint8_t *)abts, sizeof(*abts));
  81
  82         rsp_els = dma_alloc_coherent(&ha->pdev->dev, sizeof(*rsp_els), &dma,
  83             GFP_KERNEL);
  84         if (!rsp_els) {
  85                 ql_log(ql_log_warn, vha, 0x0287,
  86                     "Failed allocate dma buffer ABTS/ELS RSP.\n");
  87                 return;
  88         }
  89
  90         /* terminate exchange */
  91         rsp_els->entry_type = ELS_IOCB_TYPE;
  92         rsp_els->entry_count = 1;
  93         rsp_els->nport_handle = cpu_to_le16(~0);
  94         rsp_els->rx_xchg_address = abts->rx_xch_addr_to_abort;
  95         rsp_els->control_flags = cpu_to_le16(EPD_RX_XCHG);
  96         ql_dbg(ql_dbg_init, vha, 0x0283,
  97             "Sending ELS Response to terminate exchange %#x...\n",
  98             abts->rx_xch_addr_to_abort);
  99         ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x0283,
 100             "-------- ELS RSP -------\n");
 101         ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x0283,
 102             (uint8_t *)rsp_els, sizeof(*rsp_els));
 103         rval = qla2x00_issue_iocb(vha, rsp_els, dma, 0);
 104         if (rval) {
 105                 ql_log(ql_log_warn, vha, 0x0288,
 106                     "%s: iocb failed to execute -> %x\n", __func__, rval);
 107         } else if (rsp_els->comp_status) {
 108                 ql_log(ql_log_warn, vha, 0x0289,
 109                     "%s: iocb failed to complete -> completion=%#x subcode=(%#x,%#x)\n",
 110                     __func__, rsp_els->comp_status,
 111                     rsp_els->error_subcode_1, rsp_els->error_subcode_2);
 112         } else {
 113                 ql_dbg(ql_dbg_init, vha, 0x028a,
 114                     "%s: abort exchange done.\n", __func__);
 115         }
 116
 117         /* send ABTS response */
 118         abts_rsp = (void *)rsp_els;
 119         memset(abts_rsp, 0, sizeof(*abts_rsp));
 120         abts_rsp->entry_type = ABTS_RSP_TYPE;
 121         abts_rsp->entry_count = 1;
 122         abts_rsp->nport_handle = abts->nport_handle;
 123         abts_rsp->vp_idx = abts->vp_idx;
 124         abts_rsp->sof_type = abts->sof_type & 0xf0;
 125         abts_rsp->rx_xch_addr = abts->rx_xch_addr;
 126         abts_rsp->d_id[0] = abts->s_id[0];
 127         abts_rsp->d_id[1] = abts->s_id[1];
 128         abts_rsp->d_id[2] = abts->s_id[2];
 129         abts_rsp->r_ctl = FC_ROUTING_BLD | FC_R_CTL_BLD_BA_ACC;
 130         abts_rsp->s_id[0] = abts->d_id[0];
 131         abts_rsp->s_id[1] = abts->d_id[1];
 132         abts_rsp->s_id[2] = abts->d_id[2];
 133         abts_rsp->cs_ctl = abts->cs_ctl;
 134         /* include flipping bit23 in fctl */
 135         fctl = ~(abts->f_ctl[2] | 0x7F) << 16 |
 136             FC_F_CTL_LAST_SEQ | FC_F_CTL_END_SEQ | FC_F_CTL_SEQ_INIT;
 137         abts_rsp->f_ctl[0] = fctl >> 0 & 0xff;
 138         abts_rsp->f_ctl[1] = fctl >> 8 & 0xff;
 139         abts_rsp->f_ctl[2] = fctl >> 16 & 0xff;
 140         abts_rsp->type = FC_TYPE_BLD;
 141         abts_rsp->rx_id = abts->rx_id;
 142         abts_rsp->ox_id = abts->ox_id;
 143         abts_rsp->payload.ba_acc.aborted_rx_id = abts->rx_id;
 144         abts_rsp->payload.ba_acc.aborted_ox_id = abts->ox_id;
 145         abts_rsp->payload.ba_acc.high_seq_cnt = cpu_to_le16(~0);
 146         abts_rsp->rx_xch_addr_to_abort = abts->rx_xch_addr_to_abort;
 147         ql_dbg(ql_dbg_init, vha, 0x028b,
 148             "Sending BA ACC response to ABTS %#x...\n",
 149             abts->rx_xch_addr_to_abort);
 150         ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x028b,
 151             "-------- ELS RSP -------\n");
 152         ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x028b,
 153             (uint8_t *)abts_rsp, sizeof(*abts_rsp));
 154         rval = qla2x00_issue_iocb(vha, abts_rsp, dma, 0);
 155         if (rval) {
 156                 ql_log(ql_log_warn, vha, 0x028c,
 157                     "%s: iocb failed to execute -> %x\n", __func__, rval);
 158         } else if (abts_rsp->comp_status) {
 159                 ql_log(ql_log_warn, vha, 0x028d,
 160                     "%s: iocb failed to complete -> completion=%#x subcode=(%#x,%#x)\n",
 161                     __func__, abts_rsp->comp_status,
 162                     abts_rsp->payload.error.subcode1,
 163                     abts_rsp->payload.error.subcode2);
 164         } else {
 165                 ql_dbg(ql_dbg_init, vha, 0x028ea,
 166                     "%s: done.\n", __func__);
 167         }
 168
 169         dma_free_coherent(&ha->pdev->dev, sizeof(*rsp_els), rsp_els, dma);
 170 }
 171
 172 /**
 173  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
 174  * @irq: interrupt number
 175  * @dev_id: SCSI driver HA context
 176  *
 177  * Called by system whenever the host adapter generates an interrupt.
 178  *
 179  * Returns handled flag.
 180  */
 181 irqreturn_t
 182 qla2100_intr_handler(int irq, void *dev_id)
 183 {
 184         scsi_qla_host_t *vha;
 185         struct qla_hw_data *ha;
 186         struct device_reg_2xxx __iomem *reg;
 187         int             status;
 188         unsigned long   iter;
 189         uint16_t        hccr;
 190         uint16_t        mb[8];
 191         struct rsp_que *rsp;
 192         unsigned long   flags;
 193
 194         rsp = (struct rsp_que *) dev_id;
 195         if (!rsp) {
 196                 ql_log(ql_log_info, NULL, 0x505d,
 197                     "%s: NULL response queue pointer.\n", __func__);
 198                 return (IRQ_NONE);
 199         }
 200
 201         ha = rsp->hw;
 202         reg = &ha->iobase->isp;
 203         status = 0;
 204
 205         spin_lock_irqsave(&ha->hardware_lock, flags);
 206         vha = pci_get_drvdata(ha->pdev);
 207         for (iter = 50; iter--; ) {
 208                 hccr = rd_reg_word(&reg->hccr);
 209                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
 210                         break;
 211                 if (hccr & HCCR_RISC_PAUSE) {
 212                         if (pci_channel_offline(ha->pdev))
 213                                 break;
 214
 215                         /*
 216                          * Issue a "HARD" reset in order for the RISC interrupt
 217                          * bit to be cleared.  Schedule a big hammer to get
 218                          * out of the RISC PAUSED state.
 219                          */
 220                         wrt_reg_word(&reg->hccr, HCCR_RESET_RISC);
 221                         rd_reg_word(&reg->hccr);
 222
 223                         ha->isp_ops->fw_dump(vha);
 224                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 225                         break;
 226                 } else if ((rd_reg_word(&reg->istatus) & ISR_RISC_INT) == 0)
 227                         break;
 228
 229                 if (rd_reg_word(&reg->semaphore) & BIT_0) {
 230                         wrt_reg_word(&reg->hccr, HCCR_CLR_RISC_INT);
 231                         rd_reg_word(&reg->hccr);
 232
 233                         /* Get mailbox data. */
 234                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
 235                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
 236                                 qla2x00_mbx_completion(vha, mb[0]);
 237                                 status |= MBX_INTERRUPT;
 238                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
 239                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 240                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 241                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 242                                 qla2x00_async_event(vha, rsp, mb);
 243                         } else {
 244                                 /*EMPTY*/
 245                                 ql_dbg(ql_dbg_async, vha, 0x5025,
 246                                     "Unrecognized interrupt type (%d).\n",
 247                                     mb[0]);
 248                         }
 249                         /* Release mailbox registers. */
 250                         wrt_reg_word(&reg->semaphore, 0);
 251                         rd_reg_word(&reg->semaphore);
 252                 } else {
 253                         qla2x00_process_response_queue(rsp);
 254
 255                         wrt_reg_word(&reg->hccr, HCCR_CLR_RISC_INT);
 256                         rd_reg_word(&reg->hccr);
 257                 }
 258         }
 259         qla2x00_handle_mbx_completion(ha, status);
 260         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 261
 262         return (IRQ_HANDLED);
 263 }
 264
 265 bool
 266 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 267 {
 268         /* Check for PCI disconnection */
 269         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 270                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 271                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 272                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 273                         /*
 274                          * Schedule this (only once) on the default system
 275                          * workqueue so that all the adapter workqueues and the
 276                          * DPC thread can be shutdown cleanly.
 277                          */
 278                         schedule_work(&vha->hw->board_disable);
 279                 }
 280                 return true;
 281         } else
 282                 return false;
 283 }
 284
 285 bool
 286 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 287 {
 288         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 289 }
 290
 291 /**
 292  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 293  * @irq: interrupt number
 294  * @dev_id: SCSI driver HA context
 295  *
 296  * Called by system whenever the host adapter generates an interrupt.
 297  *
 298  * Returns handled flag.
 299  */
 300 irqreturn_t
 301 qla2300_intr_handler(int irq, void *dev_id)
 302 {
 303         scsi_qla_host_t *vha;
 304         struct device_reg_2xxx __iomem *reg;
 305         int             status;
 306         unsigned long   iter;
 307         uint32_t        stat;
 308         uint16_t        hccr;
 309         uint16_t        mb[8];
 310         struct rsp_que *rsp;
 311         struct qla_hw_data *ha;
 312         unsigned long   flags;
 313
 314         rsp = (struct rsp_que *) dev_id;
 315         if (!rsp) {
 316                 ql_log(ql_log_info, NULL, 0x5058,
 317                     "%s: NULL response queue pointer.\n", __func__);
 318                 return (IRQ_NONE);
 319         }
 320
 321         ha = rsp->hw;
 322         reg = &ha->iobase->isp;
 323         status = 0;
 324
 325         spin_lock_irqsave(&ha->hardware_lock, flags);
 326         vha = pci_get_drvdata(ha->pdev);
 327         for (iter = 50; iter--; ) {
 328                 stat = rd_reg_dword(&reg->u.isp2300.host_status);
 329                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 330                         break;
 331                 if (stat & HSR_RISC_PAUSED) {
 332                         if (unlikely(pci_channel_offline(ha->pdev)))
 333                                 break;
 334
 335                         hccr = rd_reg_word(&reg->hccr);
 336
 337                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 338                                 ql_log(ql_log_warn, vha, 0x5026,
 339                                     "Parity error -- HCCR=%x, Dumping "
 340                                     "firmware.\n", hccr);
 341                         else
 342                                 ql_log(ql_log_warn, vha, 0x5027,
 343                                     "RISC paused -- HCCR=%x, Dumping "
 344                                     "firmware.\n", hccr);
 345
 346                         /*
 347                          * Issue a "HARD" reset in order for the RISC
 348                          * interrupt bit to be cleared.  Schedule a big
 349                          * hammer to get out of the RISC PAUSED state.
 350                          */
 351                         wrt_reg_word(&reg->hccr, HCCR_RESET_RISC);
 352                         rd_reg_word(&reg->hccr);
 353
 354                         ha->isp_ops->fw_dump(vha);
 355                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 356                         break;
 357                 } else if ((stat & HSR_RISC_INT) == 0)
 358                         break;
 359
 360                 switch (stat & 0xff) {
 361                 case 0x1:
 362                 case 0x2:
 363                 case 0x10:
 364                 case 0x11:
 365                         qla2x00_mbx_completion(vha, MSW(stat));
 366                         status |= MBX_INTERRUPT;
 367
 368                         /* Release mailbox registers. */
 369                         wrt_reg_word(&reg->semaphore, 0);
 370                         break;
 371                 case 0x12:
 372                         mb[0] = MSW(stat);
 373                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 374                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 375                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 376                         qla2x00_async_event(vha, rsp, mb);
 377                         break;
 378                 case 0x13:
 379                         qla2x00_process_response_queue(rsp);
 380                         break;
 381                 case 0x15:
 382                         mb[0] = MBA_CMPLT_1_16BIT;
 383                         mb[1] = MSW(stat);
 384                         qla2x00_async_event(vha, rsp, mb);
 385                         break;
 386                 case 0x16:
 387                         mb[0] = MBA_SCSI_COMPLETION;
 388                         mb[1] = MSW(stat);
 389                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 390                         qla2x00_async_event(vha, rsp, mb);
 391                         break;
 392                 default:
 393                         ql_dbg(ql_dbg_async, vha, 0x5028,
 394                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 395                         break;
 396                 }
 397                 wrt_reg_word(&reg->hccr, HCCR_CLR_RISC_INT);
 398                 rd_reg_word_relaxed(&reg->hccr);
 399         }
 400         qla2x00_handle_mbx_completion(ha, status);
 401         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 402
 403         return (IRQ_HANDLED);
 404 }
 405
 406 /**
 407  * qla2x00_mbx_completion() - Process mailbox command completions.
 408  * @vha: SCSI driver HA context
 409  * @mb0: Mailbox0 register
 410  */
 411 static void
 412 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 413 {
 414         uint16_t        cnt;
 415         uint32_t        mboxes;
 416         __le16 __iomem *wptr;
 417         struct qla_hw_data *ha = vha->hw;
 418         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 419
 420         /* Read all mbox registers? */
 421         WARN_ON_ONCE(ha->mbx_count > 32);
 422         mboxes = (1ULL << ha->mbx_count) - 1;
 423         if (!ha->mcp)
 424                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 425         else
 426                 mboxes = ha->mcp->in_mb;
 427
 428         /* Load return mailbox registers. */
 429         ha->flags.mbox_int = 1;
 430         ha->mailbox_out[0] = mb0;
 431         mboxes >>= 1;
 432         wptr = MAILBOX_REG(ha, reg, 1);
 433
 434         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 435                 if (IS_QLA2200(ha) && cnt == 8)
 436                         wptr = MAILBOX_REG(ha, reg, 8);
 437                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 438                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 439                 else if (mboxes & BIT_0)
 440                         ha->mailbox_out[cnt] = rd_reg_word(wptr);
 441
 442                 wptr++;
 443                 mboxes >>= 1;
 444         }
 445 }
 446
 447 static void
 448 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 449 {
 450         static char *event[] =
 451                 { "Complete", "Request Notification", "Time Extension" };
 452         int rval;
 453         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 454         struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
 455         __le16 __iomem *wptr;
 456         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 457
 458         /* Seed data -- mailbox1 -> mailbox7. */
 459         if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
 460                 wptr = &reg24->mailbox1;
 461         else if (IS_QLA8044(vha->hw))
 462                 wptr = &reg82->mailbox_out[1];
 463         else
 464                 return;
 465
 466         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 467                 mb[cnt] = rd_reg_word(wptr);
 468
 469         ql_dbg(ql_dbg_async, vha, 0x5021,
 470             "Inter-Driver Communication %s -- "
 471             "%04x %04x %04x %04x %04x %04x %04x.\n",
 472             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 473             mb[4], mb[5], mb[6]);
 474         switch (aen) {
 475         /* Handle IDC Error completion case. */
 476         case MBA_IDC_COMPLETE:
 477                 if (mb[1] >> 15) {
 478                         vha->hw->flags.idc_compl_status = 1;
 479                         if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
 480                                 complete(&vha->hw->dcbx_comp);
 481                 }
 482                 break;
 483
 484         case MBA_IDC_NOTIFY:
 485                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 486                 timeout = (descr >> 8) & 0xf;
 487                 ql_dbg(ql_dbg_async, vha, 0x5022,
 488                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 489                     vha->host_no, event[aen & 0xff], timeout);
 490
 491                 if (!timeout)
 492                         return;
 493                 rval = qla2x00_post_idc_ack_work(vha, mb);
 494                 if (rval != QLA_SUCCESS)
 495                         ql_log(ql_log_warn, vha, 0x5023,
 496                             "IDC failed to post ACK.\n");
 497                 break;
 498         case MBA_IDC_TIME_EXT:
 499                 vha->hw->idc_extend_tmo = descr;
 500                 ql_dbg(ql_dbg_async, vha, 0x5087,
 501                     "%lu Inter-Driver Communication %s -- "
 502                     "Extend timeout by=%d.\n",
 503                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 504                 break;
 505         }
 506 }
 507
 508 #define LS_UNKNOWN      2
 509 const char *
 510 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 511 {
 512         static const char *const link_speeds[] = {
 513                 "1", "2", "?", "4", "8", "16", "32", "10"
 514         };
 515 #define QLA_LAST_SPEED (ARRAY_SIZE(link_speeds) - 1)
 516
 517         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 518                 return link_speeds[0];
 519         else if (speed == 0x13)
 520                 return link_speeds[QLA_LAST_SPEED];
 521         else if (speed < QLA_LAST_SPEED)
 522                 return link_speeds[speed];
 523         else
 524                 return link_speeds[LS_UNKNOWN];
 525 }
 526
 527 static void
 528 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 529 {
 530         struct qla_hw_data *ha = vha->hw;
 531
 532         /*
 533          * 8200 AEN Interpretation:
 534          * mb[0] = AEN code
 535          * mb[1] = AEN Reason code
 536          * mb[2] = LSW of Peg-Halt Status-1 Register
 537          * mb[6] = MSW of Peg-Halt Status-1 Register
 538          * mb[3] = LSW of Peg-Halt Status-2 register
 539          * mb[7] = MSW of Peg-Halt Status-2 register
 540          * mb[4] = IDC Device-State Register value
 541          * mb[5] = IDC Driver-Presence Register value
 542          */
 543         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 544             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 545             mb[0], mb[1], mb[2], mb[6]);
 546         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 547             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 548             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 549
 550         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 551                                 IDC_HEARTBEAT_FAILURE)) {
 552                 ha->flags.nic_core_hung = 1;
 553                 ql_log(ql_log_warn, vha, 0x5060,
 554                     "83XX: F/W Error Reported: Check if reset required.\n");
 555
 556                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 557                         uint32_t protocol_engine_id, fw_err_code, err_level;
 558
 559                         /*
 560                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 561                          *  - PEG-Halt Status-1 Register:
 562                          *      (LSW = mb[2], MSW = mb[6])
 563                          *      Bits 0-7   = protocol-engine ID
 564                          *      Bits 8-28  = f/w error code
 565                          *      Bits 29-31 = Error-level
 566                          *          Error-level 0x1 = Non-Fatal error
 567                          *          Error-level 0x2 = Recoverable Fatal error
 568                          *          Error-level 0x4 = UnRecoverable Fatal error
 569                          *  - PEG-Halt Status-2 Register:
 570                          *      (LSW = mb[3], MSW = mb[7])
 571                          */
 572                         protocol_engine_id = (mb[2] & 0xff);
 573                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 574                             ((mb[6] & 0x1fff) << 8));
 575                         err_level = ((mb[6] & 0xe000) >> 13);
 576                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 577                             "Register: protocol_engine_id=0x%x "
 578                             "fw_err_code=0x%x err_level=0x%x.\n",
 579                             protocol_engine_id, fw_err_code, err_level);
 580                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 581                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 582                         if (err_level == ERR_LEVEL_NON_FATAL) {
 583                                 ql_log(ql_log_warn, vha, 0x5063,
 584                                     "Not a fatal error, f/w has recovered itself.\n");
 585                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 586                                 ql_log(ql_log_fatal, vha, 0x5064,
 587                                     "Recoverable Fatal error: Chip reset "
 588                                     "required.\n");
 589                                 qla83xx_schedule_work(vha,
 590                                     QLA83XX_NIC_CORE_RESET);
 591                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 592                                 ql_log(ql_log_fatal, vha, 0x5065,
 593                                     "Unrecoverable Fatal error: Set FAILED "
 594                                     "state, reboot required.\n");
 595                                 qla83xx_schedule_work(vha,
 596                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 597                         }
 598                 }
 599
 600                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 601                         uint16_t peg_fw_state, nw_interface_link_up;
 602                         uint16_t nw_interface_signal_detect, sfp_status;
 603                         uint16_t htbt_counter, htbt_monitor_enable;
 604                         uint16_t sfp_additional_info, sfp_multirate;
 605                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 606
 607                         /*
 608                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 609                          *  - PEG-to-FC Status Register:
 610                          *      (LSW = mb[2], MSW = mb[6])
 611                          *      Bits 0-7   = Peg-Firmware state
 612                          *      Bit 8      = N/W Interface Link-up
 613                          *      Bit 9      = N/W Interface signal detected
 614                          *      Bits 10-11 = SFP Status
 615                          *        SFP Status 0x0 = SFP+ transceiver not expected
 616                          *        SFP Status 0x1 = SFP+ transceiver not present
 617                          *        SFP Status 0x2 = SFP+ transceiver invalid
 618                          *        SFP Status 0x3 = SFP+ transceiver present and
 619                          *        valid
 620                          *      Bits 12-14 = Heartbeat Counter
 621                          *      Bit 15     = Heartbeat Monitor Enable
 622                          *      Bits 16-17 = SFP Additional Info
 623                          *        SFP info 0x0 = Unregocnized transceiver for
 624                          *        Ethernet
 625                          *        SFP info 0x1 = SFP+ brand validation failed
 626                          *        SFP info 0x2 = SFP+ speed validation failed
 627                          *        SFP info 0x3 = SFP+ access error
 628                          *      Bit 18     = SFP Multirate
 629                          *      Bit 19     = SFP Tx Fault
 630                          *      Bits 20-22 = Link Speed
 631                          *      Bits 23-27 = Reserved
 632                          *      Bits 28-30 = DCBX Status
 633                          *        DCBX Status 0x0 = DCBX Disabled
 634                          *        DCBX Status 0x1 = DCBX Enabled
 635                          *        DCBX Status 0x2 = DCBX Exchange error
 636                          *      Bit 31     = Reserved
 637                          */
 638                         peg_fw_state = (mb[2] & 0x00ff);
 639                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 640                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 641                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 642                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 643                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 644                         sfp_additional_info = (mb[6] & 0x0003);
 645                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 646                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 647                         link_speed = ((mb[6] & 0x0070) >> 4);
 648                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 649
 650                         ql_log(ql_log_warn, vha, 0x5066,
 651                             "Peg-to-Fc Status Register:\n"
 652                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 653                             "nw_interface_signal_detect=0x%x"
 654                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 655                             nw_interface_link_up, nw_interface_signal_detect,
 656                             sfp_status);
 657                         ql_log(ql_log_warn, vha, 0x5067,
 658                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 659                             "sfp_additional_info=0x%x, sfp_multirate=0x%x.\n ",
 660                             htbt_counter, htbt_monitor_enable,
 661                             sfp_additional_info, sfp_multirate);
 662                         ql_log(ql_log_warn, vha, 0x5068,
 663                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 664                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 665                             dcbx_status);
 666
 667                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 668                 }
 669
 670                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 671                         ql_log(ql_log_warn, vha, 0x5069,
 672                             "Heartbeat Failure encountered, chip reset "
 673                             "required.\n");
 674
 675                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 676                 }
 677         }
 678
 679         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 680                 ql_log(ql_log_info, vha, 0x506a,
 681                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 682                 if (ha->flags.nic_core_reset_owner)
 683                         return;
 684                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 685         }
 686 }
 687
 688 int
 689 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 690 {
 691         struct qla_hw_data *ha = vha->hw;
 692         scsi_qla_host_t *vp;
 693         uint32_t vp_did;
 694         unsigned long flags;
 695         int ret = 0;
 696
 697         if (!ha->num_vhosts)
 698                 return ret;
 699
 700         spin_lock_irqsave(&ha->vport_slock, flags);
 701         list_for_each_entry(vp, &ha->vp_list, list) {
 702                 vp_did = vp->d_id.b24;
 703                 if (vp_did == rscn_entry) {
 704                         ret = 1;
 705                         break;
 706                 }
 707         }
 708         spin_unlock_irqrestore(&ha->vport_slock, flags);
 709
 710         return ret;
 711 }
 712
 713 fc_port_t *
 714 qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
 715 {
 716         fc_port_t *f, *tf;
 717
 718         f = tf = NULL;
 719         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list)
 720                 if (f->loop_id == loop_id)
 721                         return f;
 722         return NULL;
 723 }
 724
 725 fc_port_t *
 726 qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *vha, u8 *wwpn, u8 incl_deleted)
 727 {
 728         fc_port_t *f, *tf;
 729
 730         f = tf = NULL;
 731         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 732                 if (memcmp(f->port_name, wwpn, WWN_SIZE) == 0) {
 733                         if (incl_deleted)
 734                                 return f;
 735                         else if (f->deleted == 0)
 736                                 return f;
 737                 }
 738         }
 739         return NULL;
 740 }
 741
 742 fc_port_t *
 743 qla2x00_find_fcport_by_nportid(scsi_qla_host_t *vha, port_id_t *id,
 744         u8 incl_deleted)
 745 {
 746         fc_port_t *f, *tf;
 747
 748         f = tf = NULL;
 749         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 750                 if (f->d_id.b24 == id->b24) {
 751                         if (incl_deleted)
 752                                 return f;
 753                         else if (f->deleted == 0)
 754                                 return f;
 755                 }
 756         }
 757         return NULL;
 758 }
 759
 760 /* Shall be called only on supported adapters. */
 761 static void
 762 qla27xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 763 {
 764         struct qla_hw_data *ha = vha->hw;
 765         bool reset_isp_needed = 0;
 766
 767         ql_log(ql_log_warn, vha, 0x02f0,
 768                "MPI Heartbeat stop. MPI reset is%s needed. "
 769                "MB0[%xh] MB1[%xh] MB2[%xh] MB3[%xh]\n",
 770                mb[0] & BIT_8 ? "" : " not",
 771                mb[0], mb[1], mb[2], mb[3]);
 772
 773         if ((mb[1] & BIT_8) == 0)
 774                 return;
 775
 776         ql_log(ql_log_warn, vha, 0x02f1,
 777                "MPI Heartbeat stop. FW dump needed\n");
 778
 779         if (ql2xfulldump_on_mpifail) {
 780                 ha->isp_ops->fw_dump(vha);
 781                 reset_isp_needed = 1;
 782         }
 783
 784         ha->isp_ops->mpi_fw_dump(vha, 1);
 785
 786         if (reset_isp_needed) {
 787                 vha->hw->flags.fw_init_done = 0;
 788                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 789                 qla2xxx_wake_dpc(vha);
 790         }
 791 }
 792
 793 static struct purex_item *
 794 qla24xx_alloc_purex_item(scsi_qla_host_t *vha, uint16_t size)
 795 {
 796         struct purex_item *item = NULL;
 797         uint8_t item_hdr_size = sizeof(*item);
 798
 799         if (size > QLA_DEFAULT_PAYLOAD_SIZE) {
 800                 item = kzalloc(item_hdr_size +
 801                     (size - QLA_DEFAULT_PAYLOAD_SIZE), GFP_ATOMIC);
 802         } else {
 803                 if (atomic_inc_return(&vha->default_item.in_use) == 1) {
 804                         item = &vha->default_item;
 805                         goto initialize_purex_header;
 806                 } else {
 807                         item = kzalloc(item_hdr_size, GFP_ATOMIC);
 808                 }
 809         }
 810         if (!item) {
 811                 ql_log(ql_log_warn, vha, 0x5092,
 812                        ">> Failed allocate purex list item.\n");
 813
 814                 return NULL;
 815         }
 816
 817 initialize_purex_header:
 818         item->vha = vha;
 819         item->size = size;
 820         return item;
 821 }
 822
 823 static void
 824 qla24xx_queue_purex_item(scsi_qla_host_t *vha, struct purex_item *pkt,
 825                          void (*process_item)(struct scsi_qla_host *vha,
 826                                               struct purex_item *pkt))
 827 {
 828         struct purex_list *list = &vha->purex_list;
 829         ulong flags;
 830
 831         pkt->process_item = process_item;
 832
 833         spin_lock_irqsave(&list->lock, flags);
 834         list_add_tail(&pkt->list, &list->head);
 835         spin_unlock_irqrestore(&list->lock, flags);
 836
 837         set_bit(PROCESS_PUREX_IOCB, &vha->dpc_flags);
 838 }
 839
 840 /**
 841  * qla24xx_copy_std_pkt() - Copy over purex ELS which is
 842  * contained in a single IOCB.
 843  * purex packet.
 844  * @vha: SCSI driver HA context
 845  * @pkt: ELS packet
 846  */
 847 static struct purex_item
 848 *qla24xx_copy_std_pkt(struct scsi_qla_host *vha, void *pkt)
 849 {
 850         struct purex_item *item;
 851
 852         item = qla24xx_alloc_purex_item(vha,
 853                                         QLA_DEFAULT_PAYLOAD_SIZE);
 854         if (!item)
 855                 return item;
 856
 857         memcpy(&item->iocb, pkt, sizeof(item->iocb));
 858         return item;
 859 }
 860
 861 /**
 862  * qla27xx_copy_fpin_pkt() - Copy over fpin packets that can
 863  * span over multiple IOCBs.
 864  * @vha: SCSI driver HA context
 865  * @pkt: ELS packet
 866  * @rsp: Response queue
 867  */
 868 static struct purex_item *
 869 qla27xx_copy_fpin_pkt(struct scsi_qla_host *vha, void **pkt,
 870                       struct rsp_que **rsp)
 871 {
 872         struct purex_entry_24xx *purex = *pkt;
 873         struct rsp_que *rsp_q = *rsp;
 874         sts_cont_entry_t *new_pkt;
 875         uint16_t no_bytes = 0, total_bytes = 0, pending_bytes = 0;
 876         uint16_t buffer_copy_offset = 0;
 877         uint16_t entry_count, entry_count_remaining;
 878         struct purex_item *item;
 879         void *fpin_pkt = NULL;
 880
 881         total_bytes = (le16_to_cpu(purex->frame_size) & 0x0FFF)
 882             - PURX_ELS_HEADER_SIZE;
 883         pending_bytes = total_bytes;
 884         entry_count = entry_count_remaining = purex->entry_count;
 885         no_bytes = (pending_bytes > sizeof(purex->els_frame_payload))  ?
 886                    sizeof(purex->els_frame_payload) : pending_bytes;
 887         ql_log(ql_log_info, vha, 0x509a,
 888                "FPIN ELS, frame_size 0x%x, entry count %d\n",
 889                total_bytes, entry_count);
 890
 891         item = qla24xx_alloc_purex_item(vha, total_bytes);
 892         if (!item)
 893                 return item;
 894
 895         fpin_pkt = &item->iocb;
 896
 897         memcpy(fpin_pkt, &purex->els_frame_payload[0], no_bytes);
 898         buffer_copy_offset += no_bytes;
 899         pending_bytes -= no_bytes;
 900         --entry_count_remaining;
 901
 902         ((response_t *)purex)->signature = RESPONSE_PROCESSED;
 903         wmb();
 904
 905         do {
 906                 while ((total_bytes > 0) && (entry_count_remaining > 0)) {
 907                         if (rsp_q->ring_ptr->signature == RESPONSE_PROCESSED) {
 908                                 ql_dbg(ql_dbg_async, vha, 0x5084,
 909                                        "Ran out of IOCBs, partial data 0x%x\n",
 910                                        buffer_copy_offset);
 911                                 cpu_relax();
 912                                 continue;
 913                         }
 914
 915                         new_pkt = (sts_cont_entry_t *)rsp_q->ring_ptr;
 916                         *pkt = new_pkt;
 917
 918                         if (new_pkt->entry_type != STATUS_CONT_TYPE) {
 919                                 ql_log(ql_log_warn, vha, 0x507a,
 920                                        "Unexpected IOCB type, partial data 0x%x\n",
 921                                        buffer_copy_offset);
 922                                 break;
 923                         }
 924
 925                         rsp_q->ring_index++;
 926                         if (rsp_q->ring_index == rsp_q->length) {
 927                                 rsp_q->ring_index = 0;
 928                                 rsp_q->ring_ptr = rsp_q->ring;
 929                         } else {
 930                                 rsp_q->ring_ptr++;
 931                         }
 932                         no_bytes = (pending_bytes > sizeof(new_pkt->data)) ?
 933                             sizeof(new_pkt->data) : pending_bytes;
 934                         if ((buffer_copy_offset + no_bytes) <= total_bytes) {
 935                                 memcpy(((uint8_t *)fpin_pkt +
 936                                     buffer_copy_offset), new_pkt->data,
 937                                     no_bytes);
 938                                 buffer_copy_offset += no_bytes;
 939                                 pending_bytes -= no_bytes;
 940                                 --entry_count_remaining;
 941                         } else {
 942                                 ql_log(ql_log_warn, vha, 0x5044,
 943                                        "Attempt to copy more that we got, optimizing..%x\n",
 944                                        buffer_copy_offset);
 945                                 memcpy(((uint8_t *)fpin_pkt +
 946                                     buffer_copy_offset), new_pkt->data,
 947                                     total_bytes - buffer_copy_offset);
 948                         }
 949
 950                         ((response_t *)new_pkt)->signature = RESPONSE_PROCESSED;
 951                         wmb();
 952                 }
 953
 954                 if (pending_bytes != 0 || entry_count_remaining != 0) {
 955                         ql_log(ql_log_fatal, vha, 0x508b,
 956                                "Dropping partial FPIN, underrun bytes = 0x%x, entry cnts 0x%x\n",
 957                                total_bytes, entry_count_remaining);
 958                         qla24xx_free_purex_item(item);
 959                         return NULL;
 960                 }
 961         } while (entry_count_remaining > 0);
 962         host_to_fcp_swap((uint8_t *)&item->iocb, total_bytes);
 963         return item;
 964 }
 965
 966 /**
 967  * qla2x00_async_event() - Process aynchronous events.
 968  * @vha: SCSI driver HA context
 969  * @rsp: response queue
 970  * @mb: Mailbox registers (0 - 3)
 971  */
 972 void
 973 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 974 {
 975         uint16_t        handle_cnt;
 976         uint16_t        cnt, mbx;
 977         uint32_t        handles[5];
 978         struct qla_hw_data *ha = vha->hw;
 979         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 980         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 981         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 982         uint32_t        rscn_entry, host_pid;
 983         unsigned long   flags;
 984         fc_port_t       *fcport = NULL;
 985
 986         if (!vha->hw->flags.fw_started)
 987                 return;
 988
 989         /* Setup to process RIO completion. */
 990         handle_cnt = 0;
 991         if (IS_CNA_CAPABLE(ha))
 992                 goto skip_rio;
 993         switch (mb[0]) {
 994         case MBA_SCSI_COMPLETION:
 995                 handles[0] = make_handle(mb[2], mb[1]);
 996                 handle_cnt = 1;
 997                 break;
 998         case MBA_CMPLT_1_16BIT:
 999                 handles[0] = mb[1];
1000                 handle_cnt = 1;
1001                 mb[0] = MBA_SCSI_COMPLETION;
1002                 break;
1003         case MBA_CMPLT_2_16BIT:
1004                 handles[0] = mb[1];
1005                 handles[1] = mb[2];
1006                 handle_cnt = 2;
1007                 mb[0] = MBA_SCSI_COMPLETION;
1008                 break;
1009         case MBA_CMPLT_3_16BIT:
1010                 handles[0] = mb[1];
1011                 handles[1] = mb[2];
1012                 handles[2] = mb[3];
1013                 handle_cnt = 3;
1014                 mb[0] = MBA_SCSI_COMPLETION;
1015                 break;
1016         case MBA_CMPLT_4_16BIT:
1017                 handles[0] = mb[1];
1018                 handles[1] = mb[2];
1019                 handles[2] = mb[3];
1020                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
1021                 handle_cnt = 4;
1022                 mb[0] = MBA_SCSI_COMPLETION;
1023                 break;
1024         case MBA_CMPLT_5_16BIT:
1025                 handles[0] = mb[1];
1026                 handles[1] = mb[2];
1027                 handles[2] = mb[3];
1028                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
1029                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
1030                 handle_cnt = 5;
1031                 mb[0] = MBA_SCSI_COMPLETION;
1032                 break;
1033         case MBA_CMPLT_2_32BIT:
1034                 handles[0] = make_handle(mb[2], mb[1]);
1035                 handles[1] = make_handle(RD_MAILBOX_REG(ha, reg, 7),
1036                                          RD_MAILBOX_REG(ha, reg, 6));
1037                 handle_cnt = 2;
1038                 mb[0] = MBA_SCSI_COMPLETION;
1039                 break;
1040         default:
1041                 break;
1042         }
1043 skip_rio:
1044         switch (mb[0]) {
1045         case MBA_SCSI_COMPLETION:       /* Fast Post */
1046                 if (!vha->flags.online)
1047                         break;
1048
1049                 for (cnt = 0; cnt < handle_cnt; cnt++)
1050                         qla2x00_process_completed_request(vha, rsp->req,
1051                                 handles[cnt]);
1052                 break;
1053
1054         case MBA_RESET:                 /* Reset */
1055                 ql_dbg(ql_dbg_async, vha, 0x5002,
1056                     "Asynchronous RESET.\n");
1057
1058                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
1059                 break;
1060
1061         case MBA_SYSTEM_ERR:            /* System Error */
1062                 mbx = 0;
1063                 if (IS_QLA81XX(ha) || IS_QLA83XX(ha) ||
1064                     IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
1065                         u16 m[4];
1066
1067                         m[0] = rd_reg_word(&reg24->mailbox4);
1068                         m[1] = rd_reg_word(&reg24->mailbox5);
1069                         m[2] = rd_reg_word(&reg24->mailbox6);
1070                         mbx = m[3] = rd_reg_word(&reg24->mailbox7);
1071
1072                         ql_log(ql_log_warn, vha, 0x5003,
1073                             "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh mbx4=%xh mbx5=%xh mbx6=%xh mbx7=%xh.\n",
1074                             mb[1], mb[2], mb[3], m[0], m[1], m[2], m[3]);
1075                 } else
1076                         ql_log(ql_log_warn, vha, 0x5003,
1077                             "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n ",
1078                             mb[1], mb[2], mb[3]);
1079
1080                 if ((IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
1081                     rd_reg_word(&reg24->mailbox7) & BIT_8)
1082                         ha->isp_ops->mpi_fw_dump(vha, 1);
1083                 ha->isp_ops->fw_dump(vha);
1084                 ha->flags.fw_init_done = 0;
1085                 QLA_FW_STOPPED(ha);
1086
1087                 if (IS_FWI2_CAPABLE(ha)) {
1088                         if (mb[1] == 0 && mb[2] == 0) {
1089                                 ql_log(ql_log_fatal, vha, 0x5004,
1090                                     "Unrecoverable Hardware Error: adapter "
1091                                     "marked OFFLINE!\n");
1092                                 vha->flags.online = 0;
1093                                 vha->device_flags |= DFLG_DEV_FAILED;
1094                         } else {
1095                                 /* Check to see if MPI timeout occurred */
1096                                 if ((mbx & MBX_3) && (ha->port_no == 0))
1097                                         set_bit(MPI_RESET_NEEDED,
1098                                             &vha->dpc_flags);
1099
1100                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1101                         }
1102                 } else if (mb[1] == 0) {
1103                         ql_log(ql_log_fatal, vha, 0x5005,
1104                             "Unrecoverable Hardware Error: adapter marked "
1105                             "OFFLINE!\n");
1106                         vha->flags.online = 0;
1107                         vha->device_flags |= DFLG_DEV_FAILED;
1108                 } else
1109                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1110                 break;
1111
1112         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
1113                 ql_log(ql_log_warn, vha, 0x5006,
1114                     "ISP Request Transfer Error (%x).\n",  mb[1]);
1115
1116                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1117                 break;
1118
1119         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
1120                 ql_log(ql_log_warn, vha, 0x5007,
1121                     "ISP Response Transfer Error (%x).\n", mb[1]);
1122
1123                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1124                 break;
1125
1126         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
1127                 ql_dbg(ql_dbg_async, vha, 0x5008,
1128                     "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
1129                 break;
1130
1131         case MBA_LOOP_INIT_ERR:
1132                 ql_log(ql_log_warn, vha, 0x5090,
1133                     "LOOP INIT ERROR (%x).\n", mb[1]);
1134                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1135                 break;
1136
1137         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
1138                 ha->flags.lip_ae = 1;
1139
1140                 ql_dbg(ql_dbg_async, vha, 0x5009,
1141                     "LIP occurred (%x).\n", mb[1]);
1142
1143                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1144                         atomic_set(&vha->loop_state, LOOP_DOWN);
1145                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
1146                         qla2x00_mark_all_devices_lost(vha);
1147                 }
1148
1149                 if (vha->vp_idx) {
1150                         atomic_set(&vha->vp_state, VP_FAILED);
1151                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
1152                 }
1153
1154                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
1155                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
1156
1157                 vha->flags.management_server_logged_in = 0;
1158                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
1159                 break;
1160
1161         case MBA_LOOP_UP:               /* Loop Up Event */
1162                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
1163                         ha->link_data_rate = PORT_SPEED_1GB;
1164                 else
1165                         ha->link_data_rate = mb[1];
1166
1167                 ql_log(ql_log_info, vha, 0x500a,
1168                     "LOOP UP detected (%s Gbps).\n",
1169                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
1170
1171                 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
1172                         if (mb[2] & BIT_0)
1173                                 ql_log(ql_log_info, vha, 0x11a0,
1174                                     "FEC=enabled (link up).\n");
1175                 }
1176
1177                 vha->flags.management_server_logged_in = 0;
1178                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
1179
1180                 break;
1181
1182         case MBA_LOOP_DOWN:             /* Loop Down Event */
1183                 SAVE_TOPO(ha);
1184                 ha->flags.lip_ae = 0;
1185                 ha->current_topology = 0;
1186
1187                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
1188                         ? rd_reg_word(&reg24->mailbox4) : 0;
1189                 mbx = (IS_P3P_TYPE(ha)) ? rd_reg_word(&reg82->mailbox_out[4])
1190                         : mbx;
1191                 ql_log(ql_log_info, vha, 0x500b,
1192                     "LOOP DOWN detected (%x %x %x %x).\n",
1193                     mb[1], mb[2], mb[3], mbx);
1194
1195                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1196                         atomic_set(&vha->loop_state, LOOP_DOWN);
1197                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
1198                         /*
1199                          * In case of loop down, restore WWPN from
1200                          * NVRAM in case of FA-WWPN capable ISP
1201                          * Restore for Physical Port only
1202                          */
1203                         if (!vha->vp_idx) {
1204                                 if (ha->flags.fawwpn_enabled &&
1205                                     (ha->current_topology == ISP_CFG_F)) {
1206                                         void *wwpn = ha->init_cb->port_name;
1207
1208                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
1209                                         fc_host_port_name(vha->host) =
1210                                             wwn_to_u64(vha->port_name);
1211                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
1212                                             vha, 0x00d8, "LOOP DOWN detected,"
1213                                             "restore WWPN %016llx\n",
1214                                             wwn_to_u64(vha->port_name));
1215                                 }
1216
1217                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
1218                         }
1219
1220                         vha->device_flags |= DFLG_NO_CABLE;
1221                         qla2x00_mark_all_devices_lost(vha);
1222                 }
1223
1224                 if (vha->vp_idx) {
1225                         atomic_set(&vha->vp_state, VP_FAILED);
1226                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
1227                 }
1228
1229                 vha->flags.management_server_logged_in = 0;
1230                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
1231                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
1232                 break;
1233
1234         case MBA_LIP_RESET:             /* LIP reset occurred */
1235                 ql_dbg(ql_dbg_async, vha, 0x500c,
1236                     "LIP reset occurred (%x).\n", mb[1]);
1237
1238                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1239                         atomic_set(&vha->loop_state, LOOP_DOWN);
1240                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
1241                         qla2x00_mark_all_devices_lost(vha);
1242                 }
1243
1244                 if (vha->vp_idx) {
1245                         atomic_set(&vha->vp_state, VP_FAILED);
1246                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
1247                 }
1248
1249                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
1250
1251                 ha->operating_mode = LOOP;
1252                 vha->flags.management_server_logged_in = 0;
1253                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
1254                 break;
1255
1256         /* case MBA_DCBX_COMPLETE: */
1257         case MBA_POINT_TO_POINT:        /* Point-to-Point */
1258                 ha->flags.lip_ae = 0;
1259
1260                 if (IS_QLA2100(ha))
1261                         break;
1262
1263                 if (IS_CNA_CAPABLE(ha)) {
1264                         ql_dbg(ql_dbg_async, vha, 0x500d,
1265                             "DCBX Completed -- %04x %04x %04x.\n",
1266                             mb[1], mb[2], mb[3]);
1267                         if (ha->notify_dcbx_comp && !vha->vp_idx)
1268                                 complete(&ha->dcbx_comp);
1269
1270                 } else
1271                         ql_dbg(ql_dbg_async, vha, 0x500e,
1272                             "Asynchronous P2P MODE received.\n");
1273
1274                 /*
1275                  * Until there's a transition from loop down to loop up, treat
1276                  * this as loop down only.
1277                  */
1278                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1279                         atomic_set(&vha->loop_state, LOOP_DOWN);
1280                         if (!atomic_read(&vha->loop_down_timer))
1281                                 atomic_set(&vha->loop_down_timer,
1282                                     LOOP_DOWN_TIME);
1283                         if (!N2N_TOPO(ha))
1284                                 qla2x00_mark_all_devices_lost(vha);
1285                 }
1286
1287                 if (vha->vp_idx) {
1288                         atomic_set(&vha->vp_state, VP_FAILED);
1289                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
1290                 }
1291
1292                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
1293                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
1294
1295                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
1296                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
1297
1298                 vha->flags.management_server_logged_in = 0;
1299                 break;
1300
1301         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
1302                 if (IS_QLA2100(ha))
1303                         break;
1304
1305                 ql_dbg(ql_dbg_async, vha, 0x500f,
1306                     "Configuration change detected: value=%x.\n", mb[1]);
1307
1308                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1309                         atomic_set(&vha->loop_state, LOOP_DOWN);
1310                         if (!atomic_read(&vha->loop_down_timer))
1311                                 atomic_set(&vha->loop_down_timer,
1312                                     LOOP_DOWN_TIME);
1313                         qla2x00_mark_all_devices_lost(vha);
1314                 }
1315
1316                 if (vha->vp_idx) {
1317                         atomic_set(&vha->vp_state, VP_FAILED);
1318                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
1319                 }
1320
1321                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1322                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1323                 break;
1324
1325         case MBA_PORT_UPDATE:           /* Port database update */
1326                 /*
1327                  * Handle only global and vn-port update events
1328                  *
1329                  * Relevant inputs:
1330                  * mb[1] = N_Port handle of changed port
1331                  * OR 0xffff for global event
1332                  * mb[2] = New login state
1333                  * 7 = Port logged out
1334                  * mb[3] = LSB is vp_idx, 0xff = all vps
1335                  *
1336                  * Skip processing if:
1337                  *       Event is global, vp_idx is NOT all vps,
1338                  *           vp_idx does not match
1339                  *       Event is not global, vp_idx does not match
1340                  */
1341                 if (IS_QLA2XXX_MIDTYPE(ha) &&
1342                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
1343                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
1344                         break;
1345
1346                 if (mb[2] == 0x7) {
1347                         ql_dbg(ql_dbg_async, vha, 0x5010,
1348                             "Port %s %04x %04x %04x.\n",
1349                             mb[1] == 0xffff ? "unavailable" : "logout",
1350                             mb[1], mb[2], mb[3]);
1351
1352                         if (mb[1] == 0xffff)
1353                                 goto global_port_update;
1354
1355                         if (mb[1] == NPH_SNS_LID(ha)) {
1356                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1357                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1358                                 break;
1359                         }
1360
1361                         /* use handle_cnt for loop id/nport handle */
1362                         if (IS_FWI2_CAPABLE(ha))
1363                                 handle_cnt = NPH_SNS;
1364                         else
1365                                 handle_cnt = SIMPLE_NAME_SERVER;
1366                         if (mb[1] == handle_cnt) {
1367                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1368                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1369                                 break;
1370                         }
1371
1372                         /* Port logout */
1373                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1374                         if (!fcport)
1375                                 break;
1376                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1377                                 break;
1378                         ql_dbg(ql_dbg_async, vha, 0x508a,
1379                             "Marking port lost loopid=%04x portid=%06x.\n",
1380                             fcport->loop_id, fcport->d_id.b24);
1381                         if (qla_ini_mode_enabled(vha)) {
1382                                 fcport->logout_on_delete = 0;
1383                                 qlt_schedule_sess_for_deletion(fcport);
1384                         }
1385                         break;
1386
1387 global_port_update:
1388                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1389                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1390                                 atomic_set(&vha->loop_down_timer,
1391                                     LOOP_DOWN_TIME);
1392                                 vha->device_flags |= DFLG_NO_CABLE;
1393                                 qla2x00_mark_all_devices_lost(vha);
1394                         }
1395
1396                         if (vha->vp_idx) {
1397                                 atomic_set(&vha->vp_state, VP_FAILED);
1398                                 fc_vport_set_state(vha->fc_vport,
1399                                     FC_VPORT_FAILED);
1400                                 qla2x00_mark_all_devices_lost(vha);
1401                         }
1402
1403                         vha->flags.management_server_logged_in = 0;
1404                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1405                         break;
1406                 }
1407
1408                 /*
1409                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1410                  * event etc. earlier indicating loop is down) then process
1411                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1412                  */
1413                 atomic_set(&vha->loop_down_timer, 0);
1414                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1415                         !ha->flags.n2n_ae  &&
1416                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1417                         ql_dbg(ql_dbg_async, vha, 0x5011,
1418                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1419                             mb[1], mb[2], mb[3]);
1420                         break;
1421                 }
1422
1423                 ql_dbg(ql_dbg_async, vha, 0x5012,
1424                     "Port database changed %04x %04x %04x.\n",
1425                     mb[1], mb[2], mb[3]);
1426
1427                 /*
1428                  * Mark all devices as missing so we will login again.
1429                  */
1430                 atomic_set(&vha->loop_state, LOOP_UP);
1431                 vha->scan.scan_retry = 0;
1432
1433                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1434                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1435                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1436                 break;
1437
1438         case MBA_RSCN_UPDATE:           /* State Change Registration */
1439                 /* Check if the Vport has issued a SCR */
1440                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1441                         break;
1442                 /* Only handle SCNs for our Vport index. */
1443                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1444                         break;
1445
1446                 ql_dbg(ql_dbg_async, vha, 0x5013,
1447                     "RSCN database changed -- %04x %04x %04x.\n",
1448                     mb[1], mb[2], mb[3]);
1449
1450                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1451                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1452                                 | vha->d_id.b.al_pa;
1453                 if (rscn_entry == host_pid) {
1454                         ql_dbg(ql_dbg_async, vha, 0x5014,
1455                             "Ignoring RSCN update to local host "
1456                             "port ID (%06x).\n", host_pid);
1457                         break;
1458                 }
1459
1460                 /* Ignore reserved bits from RSCN-payload. */
1461                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1462
1463                 /* Skip RSCNs for virtual ports on the same physical port */
1464                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1465                         break;
1466
1467                 atomic_set(&vha->loop_down_timer, 0);
1468                 vha->flags.management_server_logged_in = 0;
1469                 {
1470                         struct event_arg ea;
1471
1472                         memset(&ea, 0, sizeof(ea));
1473                         ea.id.b24 = rscn_entry;
1474                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1475                         qla2x00_handle_rscn(vha, &ea);
1476                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1477                 }
1478                 break;
1479         case MBA_CONGN_NOTI_RECV:
1480                 if (!ha->flags.scm_enabled ||
1481                     mb[1] != QLA_CON_PRIMITIVE_RECEIVED)
1482                         break;
1483
1484                 if (mb[2] == QLA_CONGESTION_ARB_WARNING) {
1485                         ql_dbg(ql_dbg_async, vha, 0x509b,
1486                                "Congestion Warning %04x %04x.\n", mb[1], mb[2]);
1487                 } else if (mb[2] == QLA_CONGESTION_ARB_ALARM) {
1488                         ql_log(ql_log_warn, vha, 0x509b,
1489                                "Congestion Alarm %04x %04x.\n", mb[1], mb[2]);
1490                 }
1491                 break;
1492         /* case MBA_RIO_RESPONSE: */
1493         case MBA_ZIO_RESPONSE:
1494                 ql_dbg(ql_dbg_async, vha, 0x5015,
1495                     "[R|Z]IO update completion.\n");
1496
1497                 if (IS_FWI2_CAPABLE(ha))
1498                         qla24xx_process_response_queue(vha, rsp);
1499                 else
1500                         qla2x00_process_response_queue(rsp);
1501                 break;
1502
1503         case MBA_DISCARD_RND_FRAME:
1504                 ql_dbg(ql_dbg_async, vha, 0x5016,
1505                     "Discard RND Frame -- %04x %04x %04x.\n",
1506                     mb[1], mb[2], mb[3]);
1507                 break;
1508
1509         case MBA_TRACE_NOTIFICATION:
1510                 ql_dbg(ql_dbg_async, vha, 0x5017,
1511                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1512                 break;
1513
1514         case MBA_ISP84XX_ALERT:
1515                 ql_dbg(ql_dbg_async, vha, 0x5018,
1516                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1517                     mb[1], mb[2], mb[3]);
1518
1519                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1520                 switch (mb[1]) {
1521                 case A84_PANIC_RECOVERY:
1522                         ql_log(ql_log_info, vha, 0x5019,
1523                             "Alert 84XX: panic recovery %04x %04x.\n",
1524                             mb[2], mb[3]);
1525                         break;
1526                 case A84_OP_LOGIN_COMPLETE:
1527                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1528                         ql_log(ql_log_info, vha, 0x501a,
1529                             "Alert 84XX: firmware version %x.\n",
1530                             ha->cs84xx->op_fw_version);
1531                         break;
1532                 case A84_DIAG_LOGIN_COMPLETE:
1533                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1534                         ql_log(ql_log_info, vha, 0x501b,
1535                             "Alert 84XX: diagnostic firmware version %x.\n",
1536                             ha->cs84xx->diag_fw_version);
1537                         break;
1538                 case A84_GOLD_LOGIN_COMPLETE:
1539                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1540                         ha->cs84xx->fw_update = 1;
1541                         ql_log(ql_log_info, vha, 0x501c,
1542                             "Alert 84XX: gold firmware version %x.\n",
1543                             ha->cs84xx->gold_fw_version);
1544                         break;
1545                 default:
1546                         ql_log(ql_log_warn, vha, 0x501d,
1547                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1548                             mb[1], mb[2], mb[3]);
1549                 }
1550                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1551                 break;
1552         case MBA_DCBX_START:
1553                 ql_dbg(ql_dbg_async, vha, 0x501e,
1554                     "DCBX Started -- %04x %04x %04x.\n",
1555                     mb[1], mb[2], mb[3]);
1556                 break;
1557         case MBA_DCBX_PARAM_UPDATE:
1558                 ql_dbg(ql_dbg_async, vha, 0x501f,
1559                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1560                     mb[1], mb[2], mb[3]);
1561                 break;
1562         case MBA_FCF_CONF_ERR:
1563                 ql_dbg(ql_dbg_async, vha, 0x5020,
1564                     "FCF Configuration Error -- %04x %04x %04x.\n",
1565                     mb[1], mb[2], mb[3]);
1566                 break;
1567         case MBA_IDC_NOTIFY:
1568                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1569                         mb[4] = rd_reg_word(&reg24->mailbox4);
1570                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1571                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1572                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1573                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1574                                 /*
1575                                  * Extend loop down timer since port is active.
1576                                  */
1577                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1578                                         atomic_set(&vha->loop_down_timer,
1579                                             LOOP_DOWN_TIME);
1580                                 qla2xxx_wake_dpc(vha);
1581                         }
1582                 }
1583                 fallthrough;
1584         case MBA_IDC_COMPLETE:
1585                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1586                         complete(&ha->lb_portup_comp);
1587                 fallthrough;
1588         case MBA_IDC_TIME_EXT:
1589                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1590                     IS_QLA8044(ha))
1591                         qla81xx_idc_event(vha, mb[0], mb[1]);
1592                 break;
1593
1594         case MBA_IDC_AEN:
1595                 if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
1596                         qla27xx_handle_8200_aen(vha, mb);
1597                 } else if (IS_QLA83XX(ha)) {
1598                         mb[4] = rd_reg_word(&reg24->mailbox4);
1599                         mb[5] = rd_reg_word(&reg24->mailbox5);
1600                         mb[6] = rd_reg_word(&reg24->mailbox6);
1601                         mb[7] = rd_reg_word(&reg24->mailbox7);
1602                         qla83xx_handle_8200_aen(vha, mb);
1603                 } else {
1604                         ql_dbg(ql_dbg_async, vha, 0x5052,
1605                             "skip Heartbeat processing mb0-3=[0x%04x] [0x%04x] [0x%04x] [0x%04x]\n",
1606                             mb[0], mb[1], mb[2], mb[3]);
1607                 }
1608                 break;
1609
1610         case MBA_DPORT_DIAGNOSTICS:
1611                 ql_dbg(ql_dbg_async, vha, 0x5052,
1612                     "D-Port Diagnostics: %04x %04x %04x %04x\n",
1613                     mb[0], mb[1], mb[2], mb[3]);
1614                 memcpy(vha->dport_data, mb, sizeof(vha->dport_data));
1615                 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
1616                         static char *results[] = {
1617                             "start", "done(pass)", "done(error)", "undefined" };
1618                         static char *types[] = {
1619                             "none", "dynamic", "static", "other" };
1620                         uint result = mb[1] >> 0 & 0x3;
1621                         uint type = mb[1] >> 6 & 0x3;
1622                         uint sw = mb[1] >> 15 & 0x1;
1623                         ql_dbg(ql_dbg_async, vha, 0x5052,
1624                             "D-Port Diagnostics: result=%s type=%s [sw=%u]\n",
1625                             results[result], types[type], sw);
1626                         if (result == 2) {
1627                                 static char *reasons[] = {
1628                                     "reserved", "unexpected reject",
1629                                     "unexpected phase", "retry exceeded",
1630                                     "timed out", "not supported",
1631                                     "user stopped" };
1632                                 uint reason = mb[2] >> 0 & 0xf;
1633                                 uint phase = mb[2] >> 12 & 0xf;
1634                                 ql_dbg(ql_dbg_async, vha, 0x5052,
1635                                     "D-Port Diagnostics: reason=%s phase=%u \n",
1636                                     reason < 7 ? reasons[reason] : "other",
1637                                     phase >> 1);
1638                         }
1639                 }
1640                 break;
1641
1642         case MBA_TEMPERATURE_ALERT:
1643                 ql_dbg(ql_dbg_async, vha, 0x505e,
1644                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1645                 if (mb[1] == 0x12)
1646                         schedule_work(&ha->board_disable);
1647                 break;
1648
1649         case MBA_TRANS_INSERT:
1650                 ql_dbg(ql_dbg_async, vha, 0x5091,
1651                     "Transceiver Insertion: %04x\n", mb[1]);
1652                 set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
1653                 break;
1654
1655         case MBA_TRANS_REMOVE:
1656                 ql_dbg(ql_dbg_async, vha, 0x5091, "Transceiver Removal\n");
1657                 break;
1658
1659         default:
1660                 ql_dbg(ql_dbg_async, vha, 0x5057,
1661                     "Unknown AEN:%04x %04x %04x %04x\n",
1662                     mb[0], mb[1], mb[2], mb[3]);
1663         }
1664
1665         qlt_async_event(mb[0], vha, mb);
1666
1667         if (!vha->vp_idx && ha->num_vhosts)
1668                 qla2x00_alert_all_vps(rsp, mb);
1669 }
1670
1671 /**
1672  * qla2x00_process_completed_request() - Process a Fast Post response.
1673  * @vha: SCSI driver HA context
1674  * @req: request queue
1675  * @index: SRB index
1676  */
1677 void
1678 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1679                                   struct req_que *req, uint32_t index)
1680 {
1681         srb_t *sp;
1682         struct qla_hw_data *ha = vha->hw;
1683
1684         /* Validate handle. */
1685         if (index >= req->num_outstanding_cmds) {
1686                 ql_log(ql_log_warn, vha, 0x3014,
1687                     "Invalid SCSI command index (%x).\n", index);
1688
1689                 if (IS_P3P_TYPE(ha))
1690                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1691                 else
1692                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1693                 return;
1694         }
1695
1696         sp = req->outstanding_cmds[index];
1697         if (sp) {
1698                 /* Free outstanding command slot. */
1699                 req->outstanding_cmds[index] = NULL;
1700
1701                 /* Save ISP completion status */
1702                 sp->done(sp, DID_OK << 16);
1703         } else {
1704                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1705
1706                 if (IS_P3P_TYPE(ha))
1707                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1708                 else
1709                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1710         }
1711 }
1712
1713 srb_t *
1714 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1715     struct req_que *req, void *iocb)
1716 {
1717         struct qla_hw_data *ha = vha->hw;
1718         sts_entry_t *pkt = iocb;
1719         srb_t *sp = NULL;
1720         uint16_t index;
1721
1722         index = LSW(pkt->handle);
1723         if (index >= req->num_outstanding_cmds) {
1724                 ql_log(ql_log_warn, vha, 0x5031,
1725                            "Invalid command index (%x) type %8ph.\n",
1726                            index, iocb);
1727                 if (IS_P3P_TYPE(ha))
1728                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1729                 else
1730                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1731                 goto done;
1732         }
1733         sp = req->outstanding_cmds[index];
1734         if (!sp) {
1735                 ql_log(ql_log_warn, vha, 0x5032,
1736                     "Invalid completion handle (%x) -- timed-out.\n", index);
1737                 return sp;
1738         }
1739         if (sp->handle != index) {
1740                 ql_log(ql_log_warn, vha, 0x5033,
1741                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1742                 return NULL;
1743         }
1744
1745         req->outstanding_cmds[index] = NULL;
1746
1747 done:
1748         return sp;
1749 }
1750
1751 static void
1752 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1753     struct mbx_entry *mbx)
1754 {
1755         const char func[] = "MBX-IOCB";
1756         const char *type;
1757         fc_port_t *fcport;
1758         srb_t *sp;
1759         struct srb_iocb *lio;
1760         uint16_t *data;
1761         uint16_t status;
1762
1763         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1764         if (!sp)
1765                 return;
1766
1767         lio = &sp->u.iocb_cmd;
1768         type = sp->name;
1769         fcport = sp->fcport;
1770         data = lio->u.logio.data;
1771
1772         data[0] = MBS_COMMAND_ERROR;
1773         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1774             QLA_LOGIO_LOGIN_RETRIED : 0;
1775         if (mbx->entry_status) {
1776                 ql_dbg(ql_dbg_async, vha, 0x5043,
1777                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1778                     "entry-status=%x status=%x state-flag=%x "
1779                     "status-flags=%x.\n", type, sp->handle,
1780                     fcport->d_id.b.domain, fcport->d_id.b.area,
1781                     fcport->d_id.b.al_pa, mbx->entry_status,
1782                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1783                     le16_to_cpu(mbx->status_flags));
1784
1785                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1786                     mbx, sizeof(*mbx));
1787
1788                 goto logio_done;
1789         }
1790
1791         status = le16_to_cpu(mbx->status);
1792         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1793             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1794                 status = 0;
1795         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1796                 ql_dbg(ql_dbg_async, vha, 0x5045,
1797                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1798                     type, sp->handle, fcport->d_id.b.domain,
1799                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1800                     le16_to_cpu(mbx->mb1));
1801
1802                 data[0] = MBS_COMMAND_COMPLETE;
1803                 if (sp->type == SRB_LOGIN_CMD) {
1804                         fcport->port_type = FCT_TARGET;
1805                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1806                                 fcport->port_type = FCT_INITIATOR;
1807                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1808                                 fcport->flags |= FCF_FCP2_DEVICE;
1809                 }
1810                 goto logio_done;
1811         }
1812
1813         data[0] = le16_to_cpu(mbx->mb0);
1814         switch (data[0]) {
1815         case MBS_PORT_ID_USED:
1816                 data[1] = le16_to_cpu(mbx->mb1);
1817                 break;
1818         case MBS_LOOP_ID_USED:
1819                 break;
1820         default:
1821                 data[0] = MBS_COMMAND_ERROR;
1822                 break;
1823         }
1824
1825         ql_log(ql_log_warn, vha, 0x5046,
1826             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1827             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1828             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1829             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1830             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1831             le16_to_cpu(mbx->mb7));
1832
1833 logio_done:
1834         sp->done(sp, 0);
1835 }
1836
1837 static void
1838 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1839     struct mbx_24xx_entry *pkt)
1840 {
1841         const char func[] = "MBX-IOCB2";
1842         srb_t *sp;
1843         struct srb_iocb *si;
1844         u16 sz, i;
1845         int res;
1846
1847         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1848         if (!sp)
1849                 return;
1850
1851         si = &sp->u.iocb_cmd;
1852         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1853
1854         for (i = 0; i < sz; i++)
1855                 si->u.mbx.in_mb[i] = pkt->mb[i];
1856
1857         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1858
1859         sp->done(sp, res);
1860 }
1861
1862 static void
1863 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1864     struct nack_to_isp *pkt)
1865 {
1866         const char func[] = "nack";
1867         srb_t *sp;
1868         int res = 0;
1869
1870         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1871         if (!sp)
1872                 return;
1873
1874         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1875                 res = QLA_FUNCTION_FAILED;
1876
1877         sp->done(sp, res);
1878 }
1879
1880 static void
1881 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1882     sts_entry_t *pkt, int iocb_type)
1883 {
1884         const char func[] = "CT_IOCB";
1885         const char *type;
1886         srb_t *sp;
1887         struct bsg_job *bsg_job;
1888         struct fc_bsg_reply *bsg_reply;
1889         uint16_t comp_status;
1890         int res = 0;
1891
1892         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1893         if (!sp)
1894                 return;
1895
1896         switch (sp->type) {
1897         case SRB_CT_CMD:
1898             bsg_job = sp->u.bsg_job;
1899             bsg_reply = bsg_job->reply;
1900
1901             type = "ct pass-through";
1902
1903             comp_status = le16_to_cpu(pkt->comp_status);
1904
1905             /*
1906              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1907              * fc payload  to the caller
1908              */
1909             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1910             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1911
1912             if (comp_status != CS_COMPLETE) {
1913                     if (comp_status == CS_DATA_UNDERRUN) {
1914                             res = DID_OK << 16;
1915                             bsg_reply->reply_payload_rcv_len =
1916                                 le16_to_cpu(pkt->rsp_info_len);
1917
1918                             ql_log(ql_log_warn, vha, 0x5048,
1919                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1920                                 type, comp_status,
1921                                 bsg_reply->reply_payload_rcv_len);
1922                     } else {
1923                             ql_log(ql_log_warn, vha, 0x5049,
1924                                 "CT pass-through-%s error comp_status=0x%x.\n",
1925                                 type, comp_status);
1926                             res = DID_ERROR << 16;
1927                             bsg_reply->reply_payload_rcv_len = 0;
1928                     }
1929                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1930                         pkt, sizeof(*pkt));
1931             } else {
1932                     res = DID_OK << 16;
1933                     bsg_reply->reply_payload_rcv_len =
1934                         bsg_job->reply_payload.payload_len;
1935                     bsg_job->reply_len = 0;
1936             }
1937             break;
1938         case SRB_CT_PTHRU_CMD:
1939             /*
1940              * borrowing sts_entry_24xx.comp_status.
1941              * same location as ct_entry_24xx.comp_status
1942              */
1943              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1944                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1945                  sp->name);
1946              break;
1947         }
1948
1949         sp->done(sp, res);
1950 }
1951
1952 static void
1953 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1954     struct sts_entry_24xx *pkt, int iocb_type)
1955 {
1956         struct els_sts_entry_24xx *ese = (struct els_sts_entry_24xx *)pkt;
1957         const char func[] = "ELS_CT_IOCB";
1958         const char *type;
1959         srb_t *sp;
1960         struct bsg_job *bsg_job;
1961         struct fc_bsg_reply *bsg_reply;
1962         uint16_t comp_status;
1963         uint32_t fw_status[3];
1964         int res;
1965         struct srb_iocb *els;
1966
1967         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1968         if (!sp)
1969                 return;
1970
1971         type = NULL;
1972         switch (sp->type) {
1973         case SRB_ELS_CMD_RPT:
1974         case SRB_ELS_CMD_HST:
1975                 type = "els";
1976                 break;
1977         case SRB_CT_CMD:
1978                 type = "ct pass-through";
1979                 break;
1980         case SRB_ELS_DCMD:
1981                 type = "Driver ELS logo";
1982                 if (iocb_type != ELS_IOCB_TYPE) {
1983                         ql_dbg(ql_dbg_user, vha, 0x5047,
1984                             "Completing %s: (%p) type=%d.\n",
1985                             type, sp, sp->type);
1986                         sp->done(sp, 0);
1987                         return;
1988                 }
1989                 break;
1990         case SRB_CT_PTHRU_CMD:
1991                 /* borrowing sts_entry_24xx.comp_status.
1992                    same location as ct_entry_24xx.comp_status
1993                  */
1994                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1995                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1996                         sp->name);
1997                 sp->done(sp, res);
1998                 return;
1999         default:
2000                 ql_dbg(ql_dbg_user, vha, 0x503e,
2001                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
2002                 return;
2003         }
2004
2005         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
2006         fw_status[1] = le32_to_cpu(ese->error_subcode_1);
2007         fw_status[2] = le32_to_cpu(ese->error_subcode_2);
2008
2009         if (iocb_type == ELS_IOCB_TYPE) {
2010                 els = &sp->u.iocb_cmd;
2011                 els->u.els_plogi.fw_status[0] = cpu_to_le32(fw_status[0]);
2012                 els->u.els_plogi.fw_status[1] = cpu_to_le32(fw_status[1]);
2013                 els->u.els_plogi.fw_status[2] = cpu_to_le32(fw_status[2]);
2014                 els->u.els_plogi.comp_status = cpu_to_le16(fw_status[0]);
2015                 if (comp_status == CS_COMPLETE) {
2016                         res =  DID_OK << 16;
2017                 } else {
2018                         if (comp_status == CS_DATA_UNDERRUN) {
2019                                 res =  DID_OK << 16;
2020                                 els->u.els_plogi.len = cpu_to_le16(le32_to_cpu(
2021                                         ese->total_byte_count));
2022                         } else {
2023                                 els->u.els_plogi.len = 0;
2024                                 res = DID_ERROR << 16;
2025                         }
2026                 }
2027                 ql_dbg(ql_dbg_disc, vha, 0x503f,
2028                     "ELS IOCB Done -%s hdl=%x comp_status=0x%x error subcode 1=0x%x error subcode 2=0x%x total_byte=0x%x\n",
2029                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
2030                     le32_to_cpu(ese->total_byte_count));
2031                 goto els_ct_done;
2032         }
2033
2034         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
2035          * fc payload  to the caller
2036          */
2037         bsg_job = sp->u.bsg_job;
2038         bsg_reply = bsg_job->reply;
2039         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
2040         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
2041
2042         if (comp_status != CS_COMPLETE) {
2043                 if (comp_status == CS_DATA_UNDERRUN) {
2044                         res = DID_OK << 16;
2045                         bsg_reply->reply_payload_rcv_len =
2046                                 le32_to_cpu(ese->total_byte_count);
2047
2048                         ql_dbg(ql_dbg_user, vha, 0x503f,
2049                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
2050                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
2051                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
2052                             le32_to_cpu(ese->total_byte_count));
2053                 } else {
2054                         ql_dbg(ql_dbg_user, vha, 0x5040,
2055                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
2056                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
2057                             type, sp->handle, comp_status,
2058                             le32_to_cpu(ese->error_subcode_1),
2059                             le32_to_cpu(ese->error_subcode_2));
2060                         res = DID_ERROR << 16;
2061                         bsg_reply->reply_payload_rcv_len = 0;
2062                 }
2063                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
2064                        fw_status, sizeof(fw_status));
2065                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
2066                     pkt, sizeof(*pkt));
2067         }
2068         else {
2069                 res =  DID_OK << 16;
2070                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
2071                 bsg_job->reply_len = 0;
2072         }
2073 els_ct_done:
2074
2075         sp->done(sp, res);
2076 }
2077
2078 static void
2079 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
2080     struct logio_entry_24xx *logio)
2081 {
2082         const char func[] = "LOGIO-IOCB";
2083         const char *type;
2084         fc_port_t *fcport;
2085         srb_t *sp;
2086         struct srb_iocb *lio;
2087         uint16_t *data;
2088         uint32_t iop[2];
2089
2090         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
2091         if (!sp)
2092                 return;
2093
2094         lio = &sp->u.iocb_cmd;
2095         type = sp->name;
2096         fcport = sp->fcport;
2097         data = lio->u.logio.data;
2098
2099         data[0] = MBS_COMMAND_ERROR;
2100         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
2101                 QLA_LOGIO_LOGIN_RETRIED : 0;
2102         if (logio->entry_status) {
2103                 ql_log(ql_log_warn, fcport->vha, 0x5034,
2104                     "Async-%s error entry - %8phC hdl=%x"
2105                     "portid=%02x%02x%02x entry-status=%x.\n",
2106                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
2107                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
2108                     logio->entry_status);
2109                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
2110                     logio, sizeof(*logio));
2111
2112                 goto logio_done;
2113         }
2114
2115         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
2116                 ql_dbg(ql_dbg_async, sp->vha, 0x5036,
2117                     "Async-%s complete: handle=%x pid=%06x wwpn=%8phC iop0=%x\n",
2118                     type, sp->handle, fcport->d_id.b24, fcport->port_name,
2119                     le32_to_cpu(logio->io_parameter[0]));
2120
2121                 vha->hw->exch_starvation = 0;
2122                 data[0] = MBS_COMMAND_COMPLETE;
2123
2124                 if (sp->type == SRB_PRLI_CMD) {
2125                         lio->u.logio.iop[0] =
2126                             le32_to_cpu(logio->io_parameter[0]);
2127                         lio->u.logio.iop[1] =
2128                             le32_to_cpu(logio->io_parameter[1]);
2129                         goto logio_done;
2130                 }
2131
2132                 if (sp->type != SRB_LOGIN_CMD)
2133                         goto logio_done;
2134
2135                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
2136                 if (iop[0] & BIT_4) {
2137                         fcport->port_type = FCT_TARGET;
2138                         if (iop[0] & BIT_8)
2139                                 fcport->flags |= FCF_FCP2_DEVICE;
2140                 } else if (iop[0] & BIT_5)
2141                         fcport->port_type = FCT_INITIATOR;
2142
2143                 if (iop[0] & BIT_7)
2144                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
2145
2146                 if (logio->io_parameter[7] || logio->io_parameter[8])
2147                         fcport->supported_classes |= FC_COS_CLASS2;
2148                 if (logio->io_parameter[9] || logio->io_parameter[10])
2149                         fcport->supported_classes |= FC_COS_CLASS3;
2150
2151                 goto logio_done;
2152         }
2153
2154         iop[0] = le32_to_cpu(logio->io_parameter[0]);
2155         iop[1] = le32_to_cpu(logio->io_parameter[1]);
2156         lio->u.logio.iop[0] = iop[0];
2157         lio->u.logio.iop[1] = iop[1];
2158         switch (iop[0]) {
2159         case LSC_SCODE_PORTID_USED:
2160                 data[0] = MBS_PORT_ID_USED;
2161                 data[1] = LSW(iop[1]);
2162                 break;
2163         case LSC_SCODE_NPORT_USED:
2164                 data[0] = MBS_LOOP_ID_USED;
2165                 break;
2166         case LSC_SCODE_CMD_FAILED:
2167                 if (iop[1] == 0x0606) {
2168                         /*
2169                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
2170                          * Target side acked.
2171                          */
2172                         data[0] = MBS_COMMAND_COMPLETE;
2173                         goto logio_done;
2174                 }
2175                 data[0] = MBS_COMMAND_ERROR;
2176                 break;
2177         case LSC_SCODE_NOXCB:
2178                 vha->hw->exch_starvation++;
2179                 if (vha->hw->exch_starvation > 5) {
2180                         ql_log(ql_log_warn, vha, 0xd046,
2181                             "Exchange starvation. Resetting RISC\n");
2182
2183                         vha->hw->exch_starvation = 0;
2184
2185                         if (IS_P3P_TYPE(vha->hw))
2186                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2187                         else
2188                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2189                         qla2xxx_wake_dpc(vha);
2190                 }
2191                 fallthrough;
2192         default:
2193                 data[0] = MBS_COMMAND_ERROR;
2194                 break;
2195         }
2196
2197         ql_dbg(ql_dbg_async, sp->vha, 0x5037,
2198             "Async-%s failed: handle=%x pid=%06x wwpn=%8phC comp_status=%x iop0=%x iop1=%x\n",
2199             type, sp->handle, fcport->d_id.b24, fcport->port_name,
2200             le16_to_cpu(logio->comp_status),
2201             le32_to_cpu(logio->io_parameter[0]),
2202             le32_to_cpu(logio->io_parameter[1]));
2203
2204 logio_done:
2205         sp->done(sp, 0);
2206 }
2207
2208 static void
2209 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
2210 {
2211         const char func[] = "TMF-IOCB";
2212         const char *type;
2213         fc_port_t *fcport;
2214         srb_t *sp;
2215         struct srb_iocb *iocb;
2216         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
2217
2218         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
2219         if (!sp)
2220                 return;
2221
2222         iocb = &sp->u.iocb_cmd;
2223         type = sp->name;
2224         fcport = sp->fcport;
2225         iocb->u.tmf.data = QLA_SUCCESS;
2226
2227         if (sts->entry_status) {
2228                 ql_log(ql_log_warn, fcport->vha, 0x5038,
2229                     "Async-%s error - hdl=%x entry-status(%x).\n",
2230                     type, sp->handle, sts->entry_status);
2231                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
2232         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
2233                 ql_log(ql_log_warn, fcport->vha, 0x5039,
2234                     "Async-%s error - hdl=%x completion status(%x).\n",
2235                     type, sp->handle, sts->comp_status);
2236                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
2237         } else if ((le16_to_cpu(sts->scsi_status) &
2238             SS_RESPONSE_INFO_LEN_VALID)) {
2239                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
2240                         ql_log(ql_log_warn, fcport->vha, 0x503b,
2241                             "Async-%s error - hdl=%x not enough response(%d).\n",
2242                             type, sp->handle, sts->rsp_data_len);
2243                 } else if (sts->data[3]) {
2244                         ql_log(ql_log_warn, fcport->vha, 0x503c,
2245                             "Async-%s error - hdl=%x response(%x).\n",
2246                             type, sp->handle, sts->data[3]);
2247                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
2248                 }
2249         }
2250
2251         if (iocb->u.tmf.data != QLA_SUCCESS)
2252                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
2253                     sts, sizeof(*sts));
2254
2255         sp->done(sp, 0);
2256 }
2257
2258 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2259     void *tsk, srb_t *sp)
2260 {
2261         fc_port_t *fcport;
2262         struct srb_iocb *iocb;
2263         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
2264         uint16_t        state_flags;
2265         struct nvmefc_fcp_req *fd;
2266         uint16_t        ret = QLA_SUCCESS;
2267         __le16          comp_status = sts->comp_status;
2268         int             logit = 0;
2269
2270         iocb = &sp->u.iocb_cmd;
2271         fcport = sp->fcport;
2272         iocb->u.nvme.comp_status = comp_status;
2273         state_flags  = le16_to_cpu(sts->state_flags);
2274         fd = iocb->u.nvme.desc;
2275
2276         if (unlikely(iocb->u.nvme.aen_op))
2277                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
2278
2279         if (unlikely(comp_status != CS_COMPLETE))
2280                 logit = 1;
2281
2282         fd->transferred_length = fd->payload_length -
2283             le32_to_cpu(sts->residual_len);
2284
2285         /*
2286          * State flags: Bit 6 and 0.
2287          * If 0 is set, we don't care about 6.
2288          * both cases resp was dma'd to host buffer
2289          * if both are 0, that is good path case.
2290          * if six is set and 0 is clear, we need to
2291          * copy resp data from status iocb to resp buffer.
2292          */
2293         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
2294                 iocb->u.nvme.rsp_pyld_len = 0;
2295         } else if ((state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP)) ==
2296                         (SF_FCP_RSP_DMA | SF_NVME_ERSP)) {
2297                 /* Response already DMA'd to fd->rspaddr. */
2298                 iocb->u.nvme.rsp_pyld_len = sts->nvme_rsp_pyld_len;
2299         } else if ((state_flags & SF_FCP_RSP_DMA)) {
2300                 /*
2301                  * Non-zero value in first 12 bytes of NVMe_RSP IU, treat this
2302                  * as an error.
2303                  */
2304                 iocb->u.nvme.rsp_pyld_len = 0;
2305                 fd->transferred_length = 0;
2306                 ql_dbg(ql_dbg_io, fcport->vha, 0x307a,
2307                         "Unexpected values in NVMe_RSP IU.\n");
2308                 logit = 1;
2309         } else if (state_flags & SF_NVME_ERSP) {
2310                 uint32_t *inbuf, *outbuf;
2311                 uint16_t iter;
2312
2313                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
2314                 outbuf = (uint32_t *)fd->rspaddr;
2315                 iocb->u.nvme.rsp_pyld_len = sts->nvme_rsp_pyld_len;
2316                 if (unlikely(le16_to_cpu(iocb->u.nvme.rsp_pyld_len) >
2317                     sizeof(struct nvme_fc_ersp_iu))) {
2318                         if (ql_mask_match(ql_dbg_io)) {
2319                                 WARN_ONCE(1, "Unexpected response payload length %u.\n",
2320                                     iocb->u.nvme.rsp_pyld_len);
2321                                 ql_log(ql_log_warn, fcport->vha, 0x5100,
2322                                     "Unexpected response payload length %u.\n",
2323                                     iocb->u.nvme.rsp_pyld_len);
2324                         }
2325                         iocb->u.nvme.rsp_pyld_len =
2326                                 cpu_to_le16(sizeof(struct nvme_fc_ersp_iu));
2327                 }
2328                 iter = le16_to_cpu(iocb->u.nvme.rsp_pyld_len) >> 2;
2329                 for (; iter; iter--)
2330                         *outbuf++ = swab32(*inbuf++);
2331         }
2332
2333         if (state_flags & SF_NVME_ERSP) {
2334                 struct nvme_fc_ersp_iu *rsp_iu = fd->rspaddr;
2335                 u32 tgt_xfer_len;
2336
2337                 tgt_xfer_len = be32_to_cpu(rsp_iu->xfrd_len);
2338                 if (fd->transferred_length != tgt_xfer_len) {
2339                         ql_dbg(ql_dbg_io, fcport->vha, 0x3079,
2340                                 "Dropped frame(s) detected (sent/rcvd=%u/%u).\n",
2341                                 tgt_xfer_len, fd->transferred_length);
2342                         logit = 1;
2343                 } else if (le16_to_cpu(comp_status) == CS_DATA_UNDERRUN) {
2344                         /*
2345                          * Do not log if this is just an underflow and there
2346                          * is no data loss.
2347                          */
2348                         logit = 0;
2349                 }
2350         }
2351
2352         if (unlikely(logit))
2353                 ql_log(ql_log_warn, fcport->vha, 0x5060,
2354                    "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
2355                    sp->name, sp->handle, comp_status,
2356                    fd->transferred_length, le32_to_cpu(sts->residual_len),
2357                    sts->ox_id);
2358
2359         /*
2360          * If transport error then Failure (HBA rejects request)
2361          * otherwise transport will handle.
2362          */
2363         switch (le16_to_cpu(comp_status)) {
2364         case CS_COMPLETE:
2365                 break;
2366
2367         case CS_RESET:
2368         case CS_PORT_UNAVAILABLE:
2369         case CS_PORT_LOGGED_OUT:
2370                 fcport->nvme_flag |= NVME_FLAG_RESETTING;
2371                 fallthrough;
2372         case CS_ABORTED:
2373         case CS_PORT_BUSY:
2374                 fd->transferred_length = 0;
2375                 iocb->u.nvme.rsp_pyld_len = 0;
2376                 ret = QLA_ABORTED;
2377                 break;
2378         case CS_DATA_UNDERRUN:
2379                 break;
2380         default:
2381                 ret = QLA_FUNCTION_FAILED;
2382                 break;
2383         }
2384         sp->done(sp, ret);
2385 }
2386
2387 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
2388     struct vp_ctrl_entry_24xx *vce)
2389 {
2390         const char func[] = "CTRLVP-IOCB";
2391         srb_t *sp;
2392         int rval = QLA_SUCCESS;
2393
2394         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
2395         if (!sp)
2396                 return;
2397
2398         if (vce->entry_status != 0) {
2399                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
2400                     "%s: Failed to complete IOCB -- error status (%x)\n",
2401                     sp->name, vce->entry_status);
2402                 rval = QLA_FUNCTION_FAILED;
2403         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
2404                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
2405                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
2406                     sp->name, le16_to_cpu(vce->comp_status),
2407                     le16_to_cpu(vce->vp_idx_failed));
2408                 rval = QLA_FUNCTION_FAILED;
2409         } else {
2410                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
2411                     "Done %s.\n", __func__);
2412         }
2413
2414         sp->rc = rval;
2415         sp->done(sp, rval);
2416 }
2417
2418 /* Process a single response queue entry. */
2419 static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
2420                                            struct rsp_que *rsp,
2421                                            sts_entry_t *pkt)
2422 {
2423         sts21_entry_t *sts21_entry;
2424         sts22_entry_t *sts22_entry;
2425         uint16_t handle_cnt;
2426         uint16_t cnt;
2427
2428         switch (pkt->entry_type) {
2429         case STATUS_TYPE:
2430                 qla2x00_status_entry(vha, rsp, pkt);
2431                 break;
2432         case STATUS_TYPE_21:
2433                 sts21_entry = (sts21_entry_t *)pkt;
2434                 handle_cnt = sts21_entry->handle_count;
2435                 for (cnt = 0; cnt < handle_cnt; cnt++)
2436                         qla2x00_process_completed_request(vha, rsp->req,
2437                                                 sts21_entry->handle[cnt]);
2438                 break;
2439         case STATUS_TYPE_22:
2440                 sts22_entry = (sts22_entry_t *)pkt;
2441                 handle_cnt = sts22_entry->handle_count;
2442                 for (cnt = 0; cnt < handle_cnt; cnt++)
2443                         qla2x00_process_completed_request(vha, rsp->req,
2444                                                 sts22_entry->handle[cnt]);
2445                 break;
2446         case STATUS_CONT_TYPE:
2447                 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2448                 break;
2449         case MBX_IOCB_TYPE:
2450                 qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
2451                 break;
2452         case CT_IOCB_TYPE:
2453                 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2454                 break;
2455         default:
2456                 /* Type Not Supported. */
2457                 ql_log(ql_log_warn, vha, 0x504a,
2458                        "Received unknown response pkt type %x entry status=%x.\n",
2459                        pkt->entry_type, pkt->entry_status);
2460                 break;
2461         }
2462 }
2463
2464 /**
2465  * qla2x00_process_response_queue() - Process response queue entries.
2466  * @rsp: response queue
2467  */
2468 void
2469 qla2x00_process_response_queue(struct rsp_que *rsp)
2470 {
2471         struct scsi_qla_host *vha;
2472         struct qla_hw_data *ha = rsp->hw;
2473         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2474         sts_entry_t     *pkt;
2475
2476         vha = pci_get_drvdata(ha->pdev);
2477
2478         if (!vha->flags.online)
2479                 return;
2480
2481         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2482                 pkt = (sts_entry_t *)rsp->ring_ptr;
2483
2484                 rsp->ring_index++;
2485                 if (rsp->ring_index == rsp->length) {
2486                         rsp->ring_index = 0;
2487                         rsp->ring_ptr = rsp->ring;
2488                 } else {
2489                         rsp->ring_ptr++;
2490                 }
2491
2492                 if (pkt->entry_status != 0) {
2493                         qla2x00_error_entry(vha, rsp, pkt);
2494                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2495                         wmb();
2496                         continue;
2497                 }
2498
2499                 qla2x00_process_response_entry(vha, rsp, pkt);
2500                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2501                 wmb();
2502         }
2503
2504         /* Adjust ring index */
2505         wrt_reg_word(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2506 }
2507
2508 static inline void
2509 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2510                      uint32_t sense_len, struct rsp_que *rsp, int res)
2511 {
2512         struct scsi_qla_host *vha = sp->vha;
2513         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2514         uint32_t track_sense_len;
2515
2516         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2517                 sense_len = SCSI_SENSE_BUFFERSIZE;
2518
2519         SET_CMD_SENSE_LEN(sp, sense_len);
2520         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2521         track_sense_len = sense_len;
2522
2523         if (sense_len > par_sense_len)
2524                 sense_len = par_sense_len;
2525
2526         memcpy(cp->sense_buffer, sense_data, sense_len);
2527
2528         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2529         track_sense_len -= sense_len;
2530         SET_CMD_SENSE_LEN(sp, track_sense_len);
2531
2532         if (track_sense_len != 0) {
2533                 rsp->status_srb = sp;
2534                 cp->result = res;
2535         }
2536
2537         if (sense_len) {
2538                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2539                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2540                     sp->vha->host_no, cp->device->id, cp->device->lun,
2541                     cp);
2542                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2543                     cp->sense_buffer, sense_len);
2544         }
2545 }
2546
2547 struct scsi_dif_tuple {
2548         __be16 guard;       /* Checksum */
2549         __be16 app_tag;         /* APPL identifier */
2550         __be32 ref_tag;         /* Target LBA or indirect LBA */
2551 };
2552
2553 /*
2554  * Checks the guard or meta-data for the type of error
2555  * detected by the HBA. In case of errors, we set the
2556  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2557  * to indicate to the kernel that the HBA detected error.
2558  */
2559 static inline int
2560 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2561 {
2562         struct scsi_qla_host *vha = sp->vha;
2563         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2564         uint8_t         *ap = &sts24->data[12];
2565         uint8_t         *ep = &sts24->data[20];
2566         uint32_t        e_ref_tag, a_ref_tag;
2567         uint16_t        e_app_tag, a_app_tag;
2568         uint16_t        e_guard, a_guard;
2569
2570         /*
2571          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2572          * would make guard field appear at offset 2
2573          */
2574         a_guard   = get_unaligned_le16(ap + 2);
2575         a_app_tag = get_unaligned_le16(ap + 0);
2576         a_ref_tag = get_unaligned_le32(ap + 4);
2577         e_guard   = get_unaligned_le16(ep + 2);
2578         e_app_tag = get_unaligned_le16(ep + 0);
2579         e_ref_tag = get_unaligned_le32(ep + 4);
2580
2581         ql_dbg(ql_dbg_io, vha, 0x3023,
2582             "iocb(s) %p Returned STATUS.\n", sts24);
2583
2584         ql_dbg(ql_dbg_io, vha, 0x3024,
2585             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2586             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2587             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2588             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2589             a_app_tag, e_app_tag, a_guard, e_guard);
2590
2591         /*
2592          * Ignore sector if:
2593          * For type     3: ref & app tag is all 'f's
2594          * For type 0,1,2: app tag is all 'f's
2595          */
2596         if (a_app_tag == be16_to_cpu(T10_PI_APP_ESCAPE) &&
2597             (scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3 ||
2598              a_ref_tag == be32_to_cpu(T10_PI_REF_ESCAPE))) {
2599                 uint32_t blocks_done, resid;
2600                 sector_t lba_s = scsi_get_lba(cmd);
2601
2602                 /* 2TB boundary case covered automatically with this */
2603                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2604
2605                 resid = scsi_bufflen(cmd) - (blocks_done *
2606                     cmd->device->sector_size);
2607
2608                 scsi_set_resid(cmd, resid);
2609                 cmd->result = DID_OK << 16;
2610
2611                 /* Update protection tag */
2612                 if (scsi_prot_sg_count(cmd)) {
2613                         uint32_t i, j = 0, k = 0, num_ent;
2614                         struct scatterlist *sg;
2615                         struct t10_pi_tuple *spt;
2616
2617                         /* Patch the corresponding protection tags */
2618                         scsi_for_each_prot_sg(cmd, sg,
2619                             scsi_prot_sg_count(cmd), i) {
2620                                 num_ent = sg_dma_len(sg) / 8;
2621                                 if (k + num_ent < blocks_done) {
2622                                         k += num_ent;
2623                                         continue;
2624                                 }
2625                                 j = blocks_done - k - 1;
2626                                 k = blocks_done;
2627                                 break;
2628                         }
2629
2630                         if (k != blocks_done) {
2631                                 ql_log(ql_log_warn, vha, 0x302f,
2632                                     "unexpected tag values tag:lba=%x:%llx)\n",
2633                                     e_ref_tag, (unsigned long long)lba_s);
2634                                 return 1;
2635                         }
2636
2637                         spt = page_address(sg_page(sg)) + sg->offset;
2638                         spt += j;
2639
2640                         spt->app_tag = T10_PI_APP_ESCAPE;
2641                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2642                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2643                 }
2644
2645                 return 0;
2646         }
2647
2648         /* check guard */
2649         if (e_guard != a_guard) {
2650                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2651                     0x10, 0x1);
2652                 set_driver_byte(cmd, DRIVER_SENSE);
2653                 set_host_byte(cmd, DID_ABORT);
2654                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2655                 return 1;
2656         }
2657
2658         /* check ref tag */
2659         if (e_ref_tag != a_ref_tag) {
2660                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2661                     0x10, 0x3);
2662                 set_driver_byte(cmd, DRIVER_SENSE);
2663                 set_host_byte(cmd, DID_ABORT);
2664                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2665                 return 1;
2666         }
2667
2668         /* check appl tag */
2669         if (e_app_tag != a_app_tag) {
2670                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2671                     0x10, 0x2);
2672                 set_driver_byte(cmd, DRIVER_SENSE);
2673                 set_host_byte(cmd, DID_ABORT);
2674                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2675                 return 1;
2676         }
2677
2678         return 1;
2679 }
2680
2681 static void
2682 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2683                                   struct req_que *req, uint32_t index)
2684 {
2685         struct qla_hw_data *ha = vha->hw;
2686         srb_t *sp;
2687         uint16_t        comp_status;
2688         uint16_t        scsi_status;
2689         uint16_t thread_id;
2690         uint32_t rval = EXT_STATUS_OK;
2691         struct bsg_job *bsg_job = NULL;
2692         struct fc_bsg_request *bsg_request;
2693         struct fc_bsg_reply *bsg_reply;
2694         sts_entry_t *sts = pkt;
2695         struct sts_entry_24xx *sts24 = pkt;
2696
2697         /* Validate handle. */
2698         if (index >= req->num_outstanding_cmds) {
2699                 ql_log(ql_log_warn, vha, 0x70af,
2700                     "Invalid SCSI completion handle 0x%x.\n", index);
2701                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2702                 return;
2703         }
2704
2705         sp = req->outstanding_cmds[index];
2706         if (!sp) {
2707                 ql_log(ql_log_warn, vha, 0x70b0,
2708                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2709                     req->id, index);
2710
2711                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2712                 return;
2713         }
2714
2715         /* Free outstanding command slot. */
2716         req->outstanding_cmds[index] = NULL;
2717         bsg_job = sp->u.bsg_job;
2718         bsg_request = bsg_job->request;
2719         bsg_reply = bsg_job->reply;
2720
2721         if (IS_FWI2_CAPABLE(ha)) {
2722                 comp_status = le16_to_cpu(sts24->comp_status);
2723                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2724         } else {
2725                 comp_status = le16_to_cpu(sts->comp_status);
2726                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2727         }
2728
2729         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2730         switch (comp_status) {
2731         case CS_COMPLETE:
2732                 if (scsi_status == 0) {
2733                         bsg_reply->reply_payload_rcv_len =
2734                                         bsg_job->reply_payload.payload_len;
2735                         vha->qla_stats.input_bytes +=
2736                                 bsg_reply->reply_payload_rcv_len;
2737                         vha->qla_stats.input_requests++;
2738                         rval = EXT_STATUS_OK;
2739                 }
2740                 goto done;
2741
2742         case CS_DATA_OVERRUN:
2743                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2744                     "Command completed with data overrun thread_id=%d\n",
2745                     thread_id);
2746                 rval = EXT_STATUS_DATA_OVERRUN;
2747                 break;
2748
2749         case CS_DATA_UNDERRUN:
2750                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2751                     "Command completed with data underrun thread_id=%d\n",
2752                     thread_id);
2753                 rval = EXT_STATUS_DATA_UNDERRUN;
2754                 break;
2755         case CS_BIDIR_RD_OVERRUN:
2756                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2757                     "Command completed with read data overrun thread_id=%d\n",
2758                     thread_id);
2759                 rval = EXT_STATUS_DATA_OVERRUN;
2760                 break;
2761
2762         case CS_BIDIR_RD_WR_OVERRUN:
2763                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2764                     "Command completed with read and write data overrun "
2765                     "thread_id=%d\n", thread_id);
2766                 rval = EXT_STATUS_DATA_OVERRUN;
2767                 break;
2768
2769         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2770                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2771                     "Command completed with read data over and write data "
2772                     "underrun thread_id=%d\n", thread_id);
2773                 rval = EXT_STATUS_DATA_OVERRUN;
2774                 break;
2775
2776         case CS_BIDIR_RD_UNDERRUN:
2777                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2778                     "Command completed with read data underrun "
2779                     "thread_id=%d\n", thread_id);
2780                 rval = EXT_STATUS_DATA_UNDERRUN;
2781                 break;
2782
2783         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2784                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2785                     "Command completed with read data under and write data "
2786                     "overrun thread_id=%d\n", thread_id);
2787                 rval = EXT_STATUS_DATA_UNDERRUN;
2788                 break;
2789
2790         case CS_BIDIR_RD_WR_UNDERRUN:
2791                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2792                     "Command completed with read and write data underrun "
2793                     "thread_id=%d\n", thread_id);
2794                 rval = EXT_STATUS_DATA_UNDERRUN;
2795                 break;
2796
2797         case CS_BIDIR_DMA:
2798                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2799                     "Command completed with data DMA error thread_id=%d\n",
2800                     thread_id);
2801                 rval = EXT_STATUS_DMA_ERR;
2802                 break;
2803
2804         case CS_TIMEOUT:
2805                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2806                     "Command completed with timeout thread_id=%d\n",
2807                     thread_id);
2808                 rval = EXT_STATUS_TIMEOUT;
2809                 break;
2810         default:
2811                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2812                     "Command completed with completion status=0x%x "
2813                     "thread_id=%d\n", comp_status, thread_id);
2814                 rval = EXT_STATUS_ERR;
2815                 break;
2816         }
2817         bsg_reply->reply_payload_rcv_len = 0;
2818
2819 done:
2820         /* Return the vendor specific reply to API */
2821         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2822         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2823         /* Always return DID_OK, bsg will send the vendor specific response
2824          * in this case only */
2825         sp->done(sp, DID_OK << 16);
2826
2827 }
2828
2829 /**
2830  * qla2x00_status_entry() - Process a Status IOCB entry.
2831  * @vha: SCSI driver HA context
2832  * @rsp: response queue
2833  * @pkt: Entry pointer
2834  */
2835 static void
2836 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2837 {
2838         srb_t           *sp;
2839         fc_port_t       *fcport;
2840         struct scsi_cmnd *cp;
2841         sts_entry_t *sts = pkt;
2842         struct sts_entry_24xx *sts24 = pkt;
2843         uint16_t        comp_status;
2844         uint16_t        scsi_status;
2845         uint16_t        ox_id;
2846         uint8_t         lscsi_status;
2847         int32_t         resid;
2848         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2849             fw_resid_len;
2850         uint8_t         *rsp_info, *sense_data;
2851         struct qla_hw_data *ha = vha->hw;
2852         uint32_t handle;
2853         uint16_t que;
2854         struct req_que *req;
2855         int logit = 1;
2856         int res = 0;
2857         uint16_t state_flags = 0;
2858         uint16_t retry_delay = 0;
2859
2860         if (IS_FWI2_CAPABLE(ha)) {
2861                 comp_status = le16_to_cpu(sts24->comp_status);
2862                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2863                 state_flags = le16_to_cpu(sts24->state_flags);
2864         } else {
2865                 comp_status = le16_to_cpu(sts->comp_status);
2866                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2867         }
2868         handle = (uint32_t) LSW(sts->handle);
2869         que = MSW(sts->handle);
2870         req = ha->req_q_map[que];
2871
2872         /* Check for invalid queue pointer */
2873         if (req == NULL ||
2874             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2875                 ql_dbg(ql_dbg_io, vha, 0x3059,
2876                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2877                     "que=%u.\n", sts->handle, req, que);
2878                 return;
2879         }
2880
2881         /* Validate handle. */
2882         if (handle < req->num_outstanding_cmds) {
2883                 sp = req->outstanding_cmds[handle];
2884                 if (!sp) {
2885                         ql_dbg(ql_dbg_io, vha, 0x3075,
2886                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2887                             __func__, vha->host_no, sts->handle);
2888                         return;
2889                 }
2890         } else {
2891                 ql_dbg(ql_dbg_io, vha, 0x3017,
2892                     "Invalid status handle, out of range (0x%x).\n",
2893                     sts->handle);
2894
2895                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2896                         if (IS_P3P_TYPE(ha))
2897                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2898                         else
2899                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2900                         qla2xxx_wake_dpc(vha);
2901                 }
2902                 return;
2903         }
2904
2905         if (sp->cmd_type != TYPE_SRB) {
2906                 req->outstanding_cmds[handle] = NULL;
2907                 ql_dbg(ql_dbg_io, vha, 0x3015,
2908                     "Unknown sp->cmd_type %x %p).\n",
2909                     sp->cmd_type, sp);
2910                 return;
2911         }
2912
2913         /* NVME completion. */
2914         if (sp->type == SRB_NVME_CMD) {
2915                 req->outstanding_cmds[handle] = NULL;
2916                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2917                 return;
2918         }
2919
2920         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2921                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2922                 return;
2923         }
2924
2925         /* Task Management completion. */
2926         if (sp->type == SRB_TM_CMD) {
2927                 qla24xx_tm_iocb_entry(vha, req, pkt);
2928                 return;
2929         }
2930
2931         /* Fast path completion. */
2932         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2933                 qla2x00_process_completed_request(vha, req, handle);
2934
2935                 return;
2936         }
2937
2938         req->outstanding_cmds[handle] = NULL;
2939         cp = GET_CMD_SP(sp);
2940         if (cp == NULL) {
2941                 ql_dbg(ql_dbg_io, vha, 0x3018,
2942                     "Command already returned (0x%x/%p).\n",
2943                     sts->handle, sp);
2944
2945                 return;
2946         }
2947
2948         lscsi_status = scsi_status & STATUS_MASK;
2949
2950         fcport = sp->fcport;
2951
2952         ox_id = 0;
2953         sense_len = par_sense_len = rsp_info_len = resid_len =
2954             fw_resid_len = 0;
2955         if (IS_FWI2_CAPABLE(ha)) {
2956                 u16 sts24_retry_delay = le16_to_cpu(sts24->retry_delay);
2957
2958                 if (scsi_status & SS_SENSE_LEN_VALID)
2959                         sense_len = le32_to_cpu(sts24->sense_len);
2960                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2961                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2962                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2963                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2964                 if (comp_status == CS_DATA_UNDERRUN)
2965                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2966                 rsp_info = sts24->data;
2967                 sense_data = sts24->data;
2968                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2969                 ox_id = le16_to_cpu(sts24->ox_id);
2970                 par_sense_len = sizeof(sts24->data);
2971                 /* Valid values of the retry delay timer are 0x1-0xffef */
2972                 if (sts24_retry_delay > 0 && sts24_retry_delay < 0xfff1) {
2973                         retry_delay = sts24_retry_delay & 0x3fff;
2974                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2975                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2976                             sts24_retry_delay >> 14, retry_delay);
2977                 }
2978         } else {
2979                 if (scsi_status & SS_SENSE_LEN_VALID)
2980                         sense_len = le16_to_cpu(sts->req_sense_length);
2981                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2982                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2983                 resid_len = le32_to_cpu(sts->residual_length);
2984                 rsp_info = sts->rsp_info;
2985                 sense_data = sts->req_sense_data;
2986                 par_sense_len = sizeof(sts->req_sense_data);
2987         }
2988
2989         /* Check for any FCP transport errors. */
2990         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2991                 /* Sense data lies beyond any FCP RESPONSE data. */
2992                 if (IS_FWI2_CAPABLE(ha)) {
2993                         sense_data += rsp_info_len;
2994                         par_sense_len -= rsp_info_len;
2995                 }
2996                 if (rsp_info_len > 3 && rsp_info[3]) {
2997                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2998                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2999                             rsp_info_len, rsp_info[3]);
3000
3001                         res = DID_BUS_BUSY << 16;
3002                         goto out;
3003                 }
3004         }
3005
3006         /* Check for overrun. */
3007         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
3008             scsi_status & SS_RESIDUAL_OVER)
3009                 comp_status = CS_DATA_OVERRUN;
3010
3011         /*
3012          * Check retry_delay_timer value if we receive a busy or
3013          * queue full.
3014          */
3015         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
3016             lscsi_status == SAM_STAT_BUSY)
3017                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
3018
3019         /*
3020          * Based on Host and scsi status generate status code for Linux
3021          */
3022         switch (comp_status) {
3023         case CS_COMPLETE:
3024         case CS_QUEUE_FULL:
3025                 if (scsi_status == 0) {
3026                         res = DID_OK << 16;
3027                         break;
3028                 }
3029                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
3030                         resid = resid_len;
3031                         scsi_set_resid(cp, resid);
3032
3033                         if (!lscsi_status &&
3034                             ((unsigned)(scsi_bufflen(cp) - resid) <
3035                              cp->underflow)) {
3036                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
3037                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
3038                                     resid, scsi_bufflen(cp));
3039
3040                                 res = DID_ERROR << 16;
3041                                 break;
3042                         }
3043                 }
3044                 res = DID_OK << 16 | lscsi_status;
3045
3046                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
3047                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
3048                             "QUEUE FULL detected.\n");
3049                         break;
3050                 }
3051                 logit = 0;
3052                 if (lscsi_status != SS_CHECK_CONDITION)
3053                         break;
3054
3055                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3056                 if (!(scsi_status & SS_SENSE_LEN_VALID))
3057                         break;
3058
3059                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
3060                     rsp, res);
3061                 break;
3062
3063         case CS_DATA_UNDERRUN:
3064                 /* Use F/W calculated residual length. */
3065                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
3066                 scsi_set_resid(cp, resid);
3067                 if (scsi_status & SS_RESIDUAL_UNDER) {
3068                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
3069                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
3070                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
3071                                     resid, scsi_bufflen(cp));
3072
3073                                 res = DID_ERROR << 16 | lscsi_status;
3074                                 goto check_scsi_status;
3075                         }
3076
3077                         if (!lscsi_status &&
3078                             ((unsigned)(scsi_bufflen(cp) - resid) <
3079                             cp->underflow)) {
3080                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
3081                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
3082                                     resid, scsi_bufflen(cp));
3083
3084                                 res = DID_ERROR << 16;
3085                                 break;
3086                         }
3087                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
3088                             lscsi_status != SAM_STAT_BUSY) {
3089                         /*
3090                          * scsi status of task set and busy are considered to be
3091                          * task not completed.
3092                          */
3093
3094                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
3095                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
3096                             resid, scsi_bufflen(cp));
3097
3098                         res = DID_ERROR << 16 | lscsi_status;
3099                         goto check_scsi_status;
3100                 } else {
3101                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
3102                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
3103                             scsi_status, lscsi_status);
3104                 }
3105
3106                 res = DID_OK << 16 | lscsi_status;
3107                 logit = 0;
3108
3109 check_scsi_status:
3110                 /*
3111                  * Check to see if SCSI Status is non zero. If so report SCSI
3112                  * Status.
3113                  */
3114                 if (lscsi_status != 0) {
3115                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
3116                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
3117                                     "QUEUE FULL detected.\n");
3118                                 logit = 1;
3119                                 break;
3120                         }
3121                         if (lscsi_status != SS_CHECK_CONDITION)
3122                                 break;
3123
3124                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3125                         if (!(scsi_status & SS_SENSE_LEN_VALID))
3126                                 break;
3127
3128                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
3129                             sense_len, rsp, res);
3130                 }
3131                 break;
3132
3133         case CS_PORT_LOGGED_OUT:
3134         case CS_PORT_CONFIG_CHG:
3135         case CS_PORT_BUSY:
3136         case CS_INCOMPLETE:
3137         case CS_PORT_UNAVAILABLE:
3138         case CS_TIMEOUT:
3139         case CS_RESET:
3140
3141                 /*
3142                  * We are going to have the fc class block the rport
3143                  * while we try to recover so instruct the mid layer
3144                  * to requeue until the class decides how to handle this.
3145                  */
3146                 res = DID_TRANSPORT_DISRUPTED << 16;
3147
3148                 if (comp_status == CS_TIMEOUT) {
3149                         if (IS_FWI2_CAPABLE(ha))
3150                                 break;
3151                         else if ((le16_to_cpu(sts->status_flags) &
3152                             SF_LOGOUT_SENT) == 0)
3153                                 break;
3154                 }
3155
3156                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
3157                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
3158                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
3159                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
3160                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
3161                                 port_state_str[FCS_ONLINE],
3162                                 comp_status);
3163
3164                         qlt_schedule_sess_for_deletion(fcport);
3165                 }
3166
3167                 break;
3168
3169         case CS_ABORTED:
3170                 res = DID_RESET << 16;
3171                 break;
3172
3173         case CS_DIF_ERROR:
3174                 logit = qla2x00_handle_dif_error(sp, sts24);
3175                 res = cp->result;
3176                 break;
3177
3178         case CS_TRANSPORT:
3179                 res = DID_ERROR << 16;
3180
3181                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
3182                         break;
3183
3184                 if (state_flags & BIT_4)
3185                         scmd_printk(KERN_WARNING, cp,
3186                             "Unsupported device '%s' found.\n",
3187                             cp->device->vendor);
3188                 break;
3189
3190         case CS_DMA:
3191                 ql_log(ql_log_info, fcport->vha, 0x3022,
3192                     "CS_DMA error: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu portid=%06x oxid=0x%x cdb=%10phN len=0x%x rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
3193                     comp_status, scsi_status, res, vha->host_no,
3194                     cp->device->id, cp->device->lun, fcport->d_id.b24,
3195                     ox_id, cp->cmnd, scsi_bufflen(cp), rsp_info_len,
3196                     resid_len, fw_resid_len, sp, cp);
3197                 ql_dump_buffer(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe0ee,
3198                     pkt, sizeof(*sts24));
3199                 res = DID_ERROR << 16;
3200                 break;
3201         default:
3202                 res = DID_ERROR << 16;
3203                 break;
3204         }
3205
3206 out:
3207         if (logit)
3208                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
3209                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
3210                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
3211                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
3212                     comp_status, scsi_status, res, vha->host_no,
3213                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
3214                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
3215                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
3216                     resid_len, fw_resid_len, sp, cp);
3217
3218         if (rsp->status_srb == NULL)
3219                 sp->done(sp, res);
3220 }
3221
3222 /**
3223  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
3224  * @rsp: response queue
3225  * @pkt: Entry pointer
3226  *
3227  * Extended sense data.
3228  */
3229 static void
3230 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
3231 {
3232         uint8_t sense_sz = 0;
3233         struct qla_hw_data *ha = rsp->hw;
3234         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
3235         srb_t *sp = rsp->status_srb;
3236         struct scsi_cmnd *cp;
3237         uint32_t sense_len;
3238         uint8_t *sense_ptr;
3239
3240         if (!sp || !GET_CMD_SENSE_LEN(sp))
3241                 return;
3242
3243         sense_len = GET_CMD_SENSE_LEN(sp);
3244         sense_ptr = GET_CMD_SENSE_PTR(sp);
3245
3246         cp = GET_CMD_SP(sp);
3247         if (cp == NULL) {
3248                 ql_log(ql_log_warn, vha, 0x3025,
3249                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
3250
3251                 rsp->status_srb = NULL;
3252                 return;
3253         }
3254
3255         if (sense_len > sizeof(pkt->data))
3256                 sense_sz = sizeof(pkt->data);
3257         else
3258                 sense_sz = sense_len;
3259
3260         /* Move sense data. */
3261         if (IS_FWI2_CAPABLE(ha))
3262                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
3263         memcpy(sense_ptr, pkt->data, sense_sz);
3264         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
3265                 sense_ptr, sense_sz);
3266
3267         sense_len -= sense_sz;
3268         sense_ptr += sense_sz;
3269
3270         SET_CMD_SENSE_PTR(sp, sense_ptr);
3271         SET_CMD_SENSE_LEN(sp, sense_len);
3272
3273         /* Place command on done queue. */
3274         if (sense_len == 0) {
3275                 rsp->status_srb = NULL;
3276                 sp->done(sp, cp->result);
3277         }
3278 }
3279
3280 /**
3281  * qla2x00_error_entry() - Process an error entry.
3282  * @vha: SCSI driver HA context
3283  * @rsp: response queue
3284  * @pkt: Entry pointer
3285  * return : 1=allow further error analysis. 0=no additional error analysis.
3286  */
3287 static int
3288 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
3289 {
3290         srb_t *sp;
3291         struct qla_hw_data *ha = vha->hw;
3292         const char func[] = "ERROR-IOCB";
3293         uint16_t que = MSW(pkt->handle);
3294         struct req_que *req = NULL;
3295         int res = DID_ERROR << 16;
3296
3297         ql_dbg(ql_dbg_async, vha, 0x502a,
3298             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
3299             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
3300
3301         if (que >= ha->max_req_queues || !ha->req_q_map[que])
3302                 goto fatal;
3303
3304         req = ha->req_q_map[que];
3305
3306         if (pkt->entry_status & RF_BUSY)
3307                 res = DID_BUS_BUSY << 16;
3308
3309         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
3310                 return 0;
3311
3312         switch (pkt->entry_type) {
3313         case NOTIFY_ACK_TYPE:
3314         case STATUS_TYPE:
3315         case STATUS_CONT_TYPE:
3316         case LOGINOUT_PORT_IOCB_TYPE:
3317         case CT_IOCB_TYPE:
3318         case ELS_IOCB_TYPE:
3319         case ABORT_IOCB_TYPE:
3320         case MBX_IOCB_TYPE:
3321         default:
3322                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
3323                 if (sp) {
3324                         sp->done(sp, res);
3325                         return 0;
3326                 }
3327                 break;
3328
3329         case ABTS_RESP_24XX:
3330         case CTIO_TYPE7:
3331         case CTIO_CRC2:
3332                 return 1;
3333         }
3334 fatal:
3335         ql_log(ql_log_warn, vha, 0x5030,
3336             "Error entry - invalid handle/queue (%04x).\n", que);
3337         return 0;
3338 }
3339
3340 /**
3341  * qla24xx_mbx_completion() - Process mailbox command completions.
3342  * @vha: SCSI driver HA context
3343  * @mb0: Mailbox0 register
3344  */
3345 static void
3346 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
3347 {
3348         uint16_t        cnt;
3349         uint32_t        mboxes;
3350         __le16 __iomem *wptr;
3351         struct qla_hw_data *ha = vha->hw;
3352         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3353
3354         /* Read all mbox registers? */
3355         WARN_ON_ONCE(ha->mbx_count > 32);
3356         mboxes = (1ULL << ha->mbx_count) - 1;
3357         if (!ha->mcp)
3358                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
3359         else
3360                 mboxes = ha->mcp->in_mb;
3361
3362         /* Load return mailbox registers. */
3363         ha->flags.mbox_int = 1;
3364         ha->mailbox_out[0] = mb0;
3365         mboxes >>= 1;
3366         wptr = &reg->mailbox1;
3367
3368         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
3369                 if (mboxes & BIT_0)
3370                         ha->mailbox_out[cnt] = rd_reg_word(wptr);
3371
3372                 mboxes >>= 1;
3373                 wptr++;
3374         }
3375 }
3376
3377 static void
3378 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
3379         struct abort_entry_24xx *pkt)
3380 {
3381         const char func[] = "ABT_IOCB";
3382         srb_t *sp;
3383         struct srb_iocb *abt;
3384
3385         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
3386         if (!sp)
3387                 return;
3388
3389         abt = &sp->u.iocb_cmd;
3390         abt->u.abt.comp_status = pkt->nport_handle;
3391         sp->done(sp, 0);
3392 }
3393
3394 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
3395     struct pt_ls4_request *pkt, struct req_que *req)
3396 {
3397         srb_t *sp;
3398         const char func[] = "LS4_IOCB";
3399         uint16_t comp_status;
3400
3401         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
3402         if (!sp)
3403                 return;
3404
3405         comp_status = le16_to_cpu(pkt->status);
3406         sp->done(sp, comp_status);
3407 }
3408
3409 /**
3410  * qla24xx_process_response_queue() - Process response queue entries.
3411  * @vha: SCSI driver HA context
3412  * @rsp: response queue
3413  */
3414 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
3415         struct rsp_que *rsp)
3416 {
3417         struct sts_entry_24xx *pkt;
3418         struct qla_hw_data *ha = vha->hw;
3419         struct purex_entry_24xx *purex_entry;
3420         struct purex_item *pure_item;
3421
3422         if (!ha->flags.fw_started)
3423                 return;
3424
3425         if (rsp->qpair->cpuid != smp_processor_id())
3426                 qla_cpu_update(rsp->qpair, smp_processor_id());
3427
3428         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
3429                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
3430
3431                 rsp->ring_index++;
3432                 if (rsp->ring_index == rsp->length) {
3433                         rsp->ring_index = 0;
3434                         rsp->ring_ptr = rsp->ring;
3435                 } else {
3436                         rsp->ring_ptr++;
3437                 }
3438
3439                 if (pkt->entry_status != 0) {
3440                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
3441                                 goto process_err;
3442
3443                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3444                         wmb();
3445                         continue;
3446                 }
3447 process_err:
3448
3449                 switch (pkt->entry_type) {
3450                 case STATUS_TYPE:
3451                         qla2x00_status_entry(vha, rsp, pkt);
3452                         break;
3453                 case STATUS_CONT_TYPE:
3454                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
3455                         break;
3456                 case VP_RPT_ID_IOCB_TYPE:
3457                         qla24xx_report_id_acquisition(vha,
3458                             (struct vp_rpt_id_entry_24xx *)pkt);
3459                         break;
3460                 case LOGINOUT_PORT_IOCB_TYPE:
3461                         qla24xx_logio_entry(vha, rsp->req,
3462                             (struct logio_entry_24xx *)pkt);
3463                         break;
3464                 case CT_IOCB_TYPE:
3465                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
3466                         break;
3467                 case ELS_IOCB_TYPE:
3468                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
3469                         break;
3470                 case ABTS_RECV_24XX:
3471                         if (qla_ini_mode_enabled(vha)) {
3472                                 pure_item = qla24xx_copy_std_pkt(vha, pkt);
3473                                 if (!pure_item)
3474                                         break;
3475                                 qla24xx_queue_purex_item(vha, pure_item,
3476                                                          qla24xx_process_abts);
3477                                 break;
3478                         }
3479                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
3480                             IS_QLA28XX(ha)) {
3481                                 /* ensure that the ATIO queue is empty */
3482                                 qlt_handle_abts_recv(vha, rsp,
3483                                     (response_t *)pkt);
3484                                 break;
3485                         } else {
3486                                 qlt_24xx_process_atio_queue(vha, 1);
3487                         }
3488                         fallthrough;
3489                 case ABTS_RESP_24XX:
3490                 case CTIO_TYPE7:
3491                 case CTIO_CRC2:
3492                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3493                         break;
3494                 case PT_LS4_REQUEST:
3495                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3496                             rsp->req);
3497                         break;
3498                 case NOTIFY_ACK_TYPE:
3499                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3500                                 qlt_response_pkt_all_vps(vha, rsp,
3501                                     (response_t *)pkt);
3502                         else
3503                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3504                                         (struct nack_to_isp *)pkt);
3505                         break;
3506                 case MARKER_TYPE:
3507                         /* Do nothing in this case, this check is to prevent it
3508                          * from falling into default case
3509                          */
3510                         break;
3511                 case ABORT_IOCB_TYPE:
3512                         qla24xx_abort_iocb_entry(vha, rsp->req,
3513                             (struct abort_entry_24xx *)pkt);
3514                         break;
3515                 case MBX_IOCB_TYPE:
3516                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3517                             (struct mbx_24xx_entry *)pkt);
3518                         break;
3519                 case VP_CTRL_IOCB_TYPE:
3520                         qla_ctrlvp_completed(vha, rsp->req,
3521                             (struct vp_ctrl_entry_24xx *)pkt);
3522                         break;
3523                 case PUREX_IOCB_TYPE:
3524                         purex_entry = (void *)pkt;
3525                         switch (purex_entry->els_frame_payload[3]) {
3526                         case ELS_RDP:
3527                                 pure_item = qla24xx_copy_std_pkt(vha, pkt);
3528                                 if (!pure_item)
3529                                         break;
3530                                 qla24xx_queue_purex_item(vha, pure_item,
3531                                                  qla24xx_process_purex_rdp);
3532                                 break;
3533                         case ELS_FPIN:
3534                                 if (!vha->hw->flags.scm_enabled) {
3535                                         ql_log(ql_log_warn, vha, 0x5094,
3536                                                "SCM not active for this port\n");
3537                                         break;
3538                                 }
3539                                 pure_item = qla27xx_copy_fpin_pkt(vha,
3540                                                           (void **)&pkt, &rsp);
3541                                 if (!pure_item)
3542                                         break;
3543                                 qla24xx_queue_purex_item(vha, pure_item,
3544                                                  qla27xx_process_purex_fpin);
3545                                 break;
3546
3547                         default:
3548                                 ql_log(ql_log_warn, vha, 0x509c,
3549                                        "Discarding ELS Request opcode 0x%x\n",
3550                                        purex_entry->els_frame_payload[3]);
3551                         }
3552                         break;
3553                 default:
3554                         /* Type Not Supported. */
3555                         ql_dbg(ql_dbg_async, vha, 0x5042,
3556                                "Received unknown response pkt type 0x%x entry status=%x.\n",
3557                                pkt->entry_type, pkt->entry_status);
3558                         break;
3559                 }
3560                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3561                 wmb();
3562         }
3563
3564         /* Adjust ring index */
3565         if (IS_P3P_TYPE(ha)) {
3566                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3567
3568                 wrt_reg_dword(&reg->rsp_q_out[0], rsp->ring_index);
3569         } else {
3570                 wrt_reg_dword(rsp->rsp_q_out, rsp->ring_index);
3571         }
3572 }
3573
3574 static void
3575 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3576 {
3577         int rval;
3578         uint32_t cnt;
3579         struct qla_hw_data *ha = vha->hw;
3580         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3581
3582         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3583             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3584                 return;
3585
3586         rval = QLA_SUCCESS;
3587         wrt_reg_dword(&reg->iobase_addr, 0x7C00);
3588         rd_reg_dword(&reg->iobase_addr);
3589         wrt_reg_dword(&reg->iobase_window, 0x0001);
3590         for (cnt = 10000; (rd_reg_dword(&reg->iobase_window) & BIT_0) == 0 &&
3591             rval == QLA_SUCCESS; cnt--) {
3592                 if (cnt) {
3593                         wrt_reg_dword(&reg->iobase_window, 0x0001);
3594                         udelay(10);
3595                 } else
3596                         rval = QLA_FUNCTION_TIMEOUT;
3597         }
3598         if (rval == QLA_SUCCESS)
3599                 goto next_test;
3600
3601         rval = QLA_SUCCESS;
3602         wrt_reg_dword(&reg->iobase_window, 0x0003);
3603         for (cnt = 100; (rd_reg_dword(&reg->iobase_window) & BIT_0) == 0 &&
3604             rval == QLA_SUCCESS; cnt--) {
3605                 if (cnt) {
3606                         wrt_reg_dword(&reg->iobase_window, 0x0003);
3607                         udelay(10);
3608                 } else
3609                         rval = QLA_FUNCTION_TIMEOUT;
3610         }
3611         if (rval != QLA_SUCCESS)
3612                 goto done;
3613
3614 next_test:
3615         if (rd_reg_dword(&reg->iobase_c8) & BIT_3)
3616                 ql_log(ql_log_info, vha, 0x504c,
3617                     "Additional code -- 0x55AA.\n");
3618
3619 done:
3620         wrt_reg_dword(&reg->iobase_window, 0x0000);
3621         rd_reg_dword(&reg->iobase_window);
3622 }
3623
3624 /**
3625  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3626  * @irq: interrupt number
3627  * @dev_id: SCSI driver HA context
3628  *
3629  * Called by system whenever the host adapter generates an interrupt.
3630  *
3631  * Returns handled flag.
3632  */
3633 irqreturn_t
3634 qla24xx_intr_handler(int irq, void *dev_id)
3635 {
3636         scsi_qla_host_t *vha;
3637         struct qla_hw_data *ha;
3638         struct device_reg_24xx __iomem *reg;
3639         int             status;
3640         unsigned long   iter;
3641         uint32_t        stat;
3642         uint32_t        hccr;
3643         uint16_t        mb[8];
3644         struct rsp_que *rsp;
3645         unsigned long   flags;
3646         bool process_atio = false;
3647
3648         rsp = (struct rsp_que *) dev_id;
3649         if (!rsp) {
3650                 ql_log(ql_log_info, NULL, 0x5059,
3651                     "%s: NULL response queue pointer.\n", __func__);
3652                 return IRQ_NONE;
3653         }
3654
3655         ha = rsp->hw;
3656         reg = &ha->iobase->isp24;
3657         status = 0;
3658
3659         if (unlikely(pci_channel_offline(ha->pdev)))
3660                 return IRQ_HANDLED;
3661
3662         spin_lock_irqsave(&ha->hardware_lock, flags);
3663         vha = pci_get_drvdata(ha->pdev);
3664         for (iter = 50; iter--; ) {
3665                 stat = rd_reg_dword(&reg->host_status);
3666                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3667                         break;
3668                 if (stat & HSRX_RISC_PAUSED) {
3669                         if (unlikely(pci_channel_offline(ha->pdev)))
3670                                 break;
3671
3672                         hccr = rd_reg_dword(&reg->hccr);
3673
3674                         ql_log(ql_log_warn, vha, 0x504b,
3675                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3676                             hccr);
3677
3678                         qla2xxx_check_risc_status(vha);
3679
3680                         ha->isp_ops->fw_dump(vha);
3681                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3682                         break;
3683                 } else if ((stat & HSRX_RISC_INT) == 0)
3684                         break;
3685
3686                 switch (stat & 0xff) {
3687                 case INTR_ROM_MB_SUCCESS:
3688                 case INTR_ROM_MB_FAILED:
3689                 case INTR_MB_SUCCESS:
3690                 case INTR_MB_FAILED:
3691                         qla24xx_mbx_completion(vha, MSW(stat));
3692                         status |= MBX_INTERRUPT;
3693
3694                         break;
3695                 case INTR_ASYNC_EVENT:
3696                         mb[0] = MSW(stat);
3697                         mb[1] = rd_reg_word(&reg->mailbox1);
3698                         mb[2] = rd_reg_word(&reg->mailbox2);
3699                         mb[3] = rd_reg_word(&reg->mailbox3);
3700                         qla2x00_async_event(vha, rsp, mb);
3701                         break;
3702                 case INTR_RSP_QUE_UPDATE:
3703                 case INTR_RSP_QUE_UPDATE_83XX:
3704                         qla24xx_process_response_queue(vha, rsp);
3705                         break;
3706                 case INTR_ATIO_QUE_UPDATE_27XX:
3707                 case INTR_ATIO_QUE_UPDATE:
3708                         process_atio = true;
3709                         break;
3710                 case INTR_ATIO_RSP_QUE_UPDATE:
3711                         process_atio = true;
3712                         qla24xx_process_response_queue(vha, rsp);
3713                         break;
3714                 default:
3715                         ql_dbg(ql_dbg_async, vha, 0x504f,
3716                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3717                         break;
3718                 }
3719                 wrt_reg_dword(&reg->hccr, HCCRX_CLR_RISC_INT);
3720                 rd_reg_dword_relaxed(&reg->hccr);
3721                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3722                         ndelay(3500);
3723         }
3724         qla2x00_handle_mbx_completion(ha, status);
3725         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3726
3727         if (process_atio) {
3728                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3729                 qlt_24xx_process_atio_queue(vha, 0);
3730                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3731         }
3732
3733         return IRQ_HANDLED;
3734 }
3735
3736 static irqreturn_t
3737 qla24xx_msix_rsp_q(int irq, void *dev_id)
3738 {
3739         struct qla_hw_data *ha;
3740         struct rsp_que *rsp;
3741         struct device_reg_24xx __iomem *reg;
3742         struct scsi_qla_host *vha;
3743         unsigned long flags;
3744
3745         rsp = (struct rsp_que *) dev_id;
3746         if (!rsp) {
3747                 ql_log(ql_log_info, NULL, 0x505a,
3748                     "%s: NULL response queue pointer.\n", __func__);
3749                 return IRQ_NONE;
3750         }
3751         ha = rsp->hw;
3752         reg = &ha->iobase->isp24;
3753
3754         spin_lock_irqsave(&ha->hardware_lock, flags);
3755
3756         vha = pci_get_drvdata(ha->pdev);
3757         qla24xx_process_response_queue(vha, rsp);
3758         if (!ha->flags.disable_msix_handshake) {
3759                 wrt_reg_dword(&reg->hccr, HCCRX_CLR_RISC_INT);
3760                 rd_reg_dword_relaxed(&reg->hccr);
3761         }
3762         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3763
3764         return IRQ_HANDLED;
3765 }
3766
3767 static irqreturn_t
3768 qla24xx_msix_default(int irq, void *dev_id)
3769 {
3770         scsi_qla_host_t *vha;
3771         struct qla_hw_data *ha;
3772         struct rsp_que *rsp;
3773         struct device_reg_24xx __iomem *reg;
3774         int             status;
3775         uint32_t        stat;
3776         uint32_t        hccr;
3777         uint16_t        mb[8];
3778         unsigned long flags;
3779         bool process_atio = false;
3780
3781         rsp = (struct rsp_que *) dev_id;
3782         if (!rsp) {
3783                 ql_log(ql_log_info, NULL, 0x505c,
3784                     "%s: NULL response queue pointer.\n", __func__);
3785                 return IRQ_NONE;
3786         }
3787         ha = rsp->hw;
3788         reg = &ha->iobase->isp24;
3789         status = 0;
3790
3791         spin_lock_irqsave(&ha->hardware_lock, flags);
3792         vha = pci_get_drvdata(ha->pdev);
3793         do {
3794                 stat = rd_reg_dword(&reg->host_status);
3795                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3796                         break;
3797                 if (stat & HSRX_RISC_PAUSED) {
3798                         if (unlikely(pci_channel_offline(ha->pdev)))
3799                                 break;
3800
3801                         hccr = rd_reg_dword(&reg->hccr);
3802
3803                         ql_log(ql_log_info, vha, 0x5050,
3804                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3805                             hccr);
3806
3807                         qla2xxx_check_risc_status(vha);
3808
3809                         ha->isp_ops->fw_dump(vha);
3810                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3811                         break;
3812                 } else if ((stat & HSRX_RISC_INT) == 0)
3813                         break;
3814
3815                 switch (stat & 0xff) {
3816                 case INTR_ROM_MB_SUCCESS:
3817                 case INTR_ROM_MB_FAILED:
3818                 case INTR_MB_SUCCESS:
3819                 case INTR_MB_FAILED:
3820                         qla24xx_mbx_completion(vha, MSW(stat));
3821                         status |= MBX_INTERRUPT;
3822
3823                         break;
3824                 case INTR_ASYNC_EVENT:
3825                         mb[0] = MSW(stat);
3826                         mb[1] = rd_reg_word(&reg->mailbox1);
3827                         mb[2] = rd_reg_word(&reg->mailbox2);
3828                         mb[3] = rd_reg_word(&reg->mailbox3);
3829                         qla2x00_async_event(vha, rsp, mb);
3830                         break;
3831                 case INTR_RSP_QUE_UPDATE:
3832                 case INTR_RSP_QUE_UPDATE_83XX:
3833                         qla24xx_process_response_queue(vha, rsp);
3834                         break;
3835                 case INTR_ATIO_QUE_UPDATE_27XX:
3836                 case INTR_ATIO_QUE_UPDATE:
3837                         process_atio = true;
3838                         break;
3839                 case INTR_ATIO_RSP_QUE_UPDATE:
3840                         process_atio = true;
3841                         qla24xx_process_response_queue(vha, rsp);
3842                         break;
3843                 default:
3844                         ql_dbg(ql_dbg_async, vha, 0x5051,
3845                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3846                         break;
3847                 }
3848                 wrt_reg_dword(&reg->hccr, HCCRX_CLR_RISC_INT);
3849         } while (0);
3850         qla2x00_handle_mbx_completion(ha, status);
3851         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3852
3853         if (process_atio) {
3854                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3855                 qlt_24xx_process_atio_queue(vha, 0);
3856                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3857         }
3858
3859         return IRQ_HANDLED;
3860 }
3861
3862 irqreturn_t
3863 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3864 {
3865         struct qla_hw_data *ha;
3866         struct qla_qpair *qpair;
3867
3868         qpair = dev_id;
3869         if (!qpair) {
3870                 ql_log(ql_log_info, NULL, 0x505b,
3871                     "%s: NULL response queue pointer.\n", __func__);
3872                 return IRQ_NONE;
3873         }
3874         ha = qpair->hw;
3875
3876         queue_work(ha->wq, &qpair->q_work);
3877
3878         return IRQ_HANDLED;
3879 }
3880
3881 irqreturn_t
3882 qla2xxx_msix_rsp_q_hs(int irq, void *dev_id)
3883 {
3884         struct qla_hw_data *ha;
3885         struct qla_qpair *qpair;
3886         struct device_reg_24xx __iomem *reg;
3887         unsigned long flags;
3888
3889         qpair = dev_id;
3890         if (!qpair) {
3891                 ql_log(ql_log_info, NULL, 0x505b,
3892                     "%s: NULL response queue pointer.\n", __func__);
3893                 return IRQ_NONE;
3894         }
3895         ha = qpair->hw;
3896
3897         reg = &ha->iobase->isp24;
3898         spin_lock_irqsave(&ha->hardware_lock, flags);
3899         wrt_reg_dword(&reg->hccr, HCCRX_CLR_RISC_INT);
3900         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3901
3902         queue_work(ha->wq, &qpair->q_work);
3903
3904         return IRQ_HANDLED;
3905 }
3906
3907 /* Interrupt handling helpers. */
3908
3909 struct qla_init_msix_entry {
3910         const char *name;
3911         irq_handler_t handler;
3912 };
3913
3914 static const struct qla_init_msix_entry msix_entries[] = {
3915         { "default", qla24xx_msix_default },
3916         { "rsp_q", qla24xx_msix_rsp_q },
3917         { "atio_q", qla83xx_msix_atio_q },
3918         { "qpair_multiq", qla2xxx_msix_rsp_q },
3919         { "qpair_multiq_hs", qla2xxx_msix_rsp_q_hs },
3920 };
3921
3922 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3923         { "qla2xxx (default)", qla82xx_msix_default },
3924         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3925 };
3926
3927 static int
3928 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3929 {
3930         int i, ret;
3931         struct qla_msix_entry *qentry;
3932         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3933         int min_vecs = QLA_BASE_VECTORS;
3934         struct irq_affinity desc = {
3935                 .pre_vectors = QLA_BASE_VECTORS,
3936         };
3937
3938         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3939             IS_ATIO_MSIX_CAPABLE(ha)) {
3940                 desc.pre_vectors++;
3941                 min_vecs++;
3942         }
3943
3944         if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
3945                 /* user wants to control IRQ setting for target mode */
3946                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3947                     ha->msix_count, PCI_IRQ_MSIX);
3948         } else
3949                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3950                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3951                     &desc);
3952
3953         if (ret < 0) {
3954                 ql_log(ql_log_fatal, vha, 0x00c7,
3955                     "MSI-X: Failed to enable support, "
3956                     "giving   up -- %d/%d.\n",
3957                     ha->msix_count, ret);
3958                 goto msix_out;
3959         } else if (ret < ha->msix_count) {
3960                 ql_log(ql_log_info, vha, 0x00c6,
3961                     "MSI-X: Using %d vectors\n", ret);
3962                 ha->msix_count = ret;
3963                 /* Recalculate queue values */
3964                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3965                         ha->max_req_queues = ha->msix_count - 1;
3966
3967                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3968                         if (QLA_TGT_MODE_ENABLED())
3969                                 ha->max_req_queues--;
3970
3971                         ha->max_rsp_queues = ha->max_req_queues;
3972
3973                         ha->max_qpairs = ha->max_req_queues - 1;
3974                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3975                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3976                 }
3977         }
3978         vha->irq_offset = desc.pre_vectors;
3979         ha->msix_entries = kcalloc(ha->msix_count,
3980                                    sizeof(struct qla_msix_entry),
3981                                    GFP_KERNEL);
3982         if (!ha->msix_entries) {
3983                 ql_log(ql_log_fatal, vha, 0x00c8,
3984                     "Failed to allocate memory for ha->msix_entries.\n");
3985                 ret = -ENOMEM;
3986                 goto free_irqs;
3987         }
3988         ha->flags.msix_enabled = 1;
3989
3990         for (i = 0; i < ha->msix_count; i++) {
3991                 qentry = &ha->msix_entries[i];
3992                 qentry->vector = pci_irq_vector(ha->pdev, i);
3993                 qentry->entry = i;
3994                 qentry->have_irq = 0;
3995                 qentry->in_use = 0;
3996                 qentry->handle = NULL;
3997         }
3998
3999         /* Enable MSI-X vectors for the base queue */
4000         for (i = 0; i < QLA_BASE_VECTORS; i++) {
4001                 qentry = &ha->msix_entries[i];
4002                 qentry->handle = rsp;
4003                 rsp->msix = qentry;
4004                 scnprintf(qentry->name, sizeof(qentry->name),
4005                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
4006                 if (IS_P3P_TYPE(ha))
4007                         ret = request_irq(qentry->vector,
4008                                 qla82xx_msix_entries[i].handler,
4009                                 0, qla82xx_msix_entries[i].name, rsp);
4010                 else
4011                         ret = request_irq(qentry->vector,
4012                                 msix_entries[i].handler,
4013                                 0, qentry->name, rsp);
4014                 if (ret)
4015                         goto msix_register_fail;
4016                 qentry->have_irq = 1;
4017                 qentry->in_use = 1;
4018         }
4019
4020         /*
4021          * If target mode is enable, also request the vector for the ATIO
4022          * queue.
4023          */
4024         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
4025             IS_ATIO_MSIX_CAPABLE(ha)) {
4026                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
4027                 rsp->msix = qentry;
4028                 qentry->handle = rsp;
4029                 scnprintf(qentry->name, sizeof(qentry->name),
4030                     "qla2xxx%lu_%s", vha->host_no,
4031                     msix_entries[QLA_ATIO_VECTOR].name);
4032                 qentry->in_use = 1;
4033                 ret = request_irq(qentry->vector,
4034                         msix_entries[QLA_ATIO_VECTOR].handler,
4035                         0, qentry->name, rsp);
4036                 qentry->have_irq = 1;
4037         }
4038
4039 msix_register_fail:
4040         if (ret) {
4041                 ql_log(ql_log_fatal, vha, 0x00cb,
4042                     "MSI-X: unable to register handler -- %x/%d.\n",
4043                     qentry->vector, ret);
4044                 qla2x00_free_irqs(vha);
4045                 ha->mqenable = 0;
4046                 goto msix_out;
4047         }
4048
4049         /* Enable MSI-X vector for response queue update for queue 0 */
4050         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
4051                 if (ha->msixbase && ha->mqiobase &&
4052                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
4053                      ql2xmqsupport))
4054                         ha->mqenable = 1;
4055         } else
4056                 if (ha->mqiobase &&
4057                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
4058                      ql2xmqsupport))
4059                         ha->mqenable = 1;
4060         ql_dbg(ql_dbg_multiq, vha, 0xc005,
4061             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
4062             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
4063         ql_dbg(ql_dbg_init, vha, 0x0055,
4064             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
4065             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
4066
4067 msix_out:
4068         return ret;
4069
4070 free_irqs:
4071         pci_free_irq_vectors(ha->pdev);
4072         goto msix_out;
4073 }
4074
4075 int
4076 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
4077 {
4078         int ret = QLA_FUNCTION_FAILED;
4079         device_reg_t *reg = ha->iobase;
4080         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
4081
4082         /* If possible, enable MSI-X. */
4083         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
4084             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
4085             !IS_QLAFX00(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)))
4086                 goto skip_msi;
4087
4088         if (ql2xenablemsix == 2)
4089                 goto skip_msix;
4090
4091         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
4092                 (ha->pdev->subsystem_device == 0x7040 ||
4093                 ha->pdev->subsystem_device == 0x7041 ||
4094                 ha->pdev->subsystem_device == 0x1705)) {
4095                 ql_log(ql_log_warn, vha, 0x0034,
4096                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
4097                         ha->pdev->subsystem_vendor,
4098                         ha->pdev->subsystem_device);
4099                 goto skip_msi;
4100         }
4101
4102         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
4103                 ql_log(ql_log_warn, vha, 0x0035,
4104                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
4105                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
4106                 goto skip_msix;
4107         }
4108
4109         ret = qla24xx_enable_msix(ha, rsp);
4110         if (!ret) {
4111                 ql_dbg(ql_dbg_init, vha, 0x0036,
4112                     "MSI-X: Enabled (0x%X, 0x%X).\n",
4113                     ha->chip_revision, ha->fw_attributes);
4114                 goto clear_risc_ints;
4115         }
4116
4117 skip_msix:
4118
4119         ql_log(ql_log_info, vha, 0x0037,
4120             "Falling back-to MSI mode -- ret=%d.\n", ret);
4121
4122         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
4123             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
4124             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
4125                 goto skip_msi;
4126
4127         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
4128         if (ret > 0) {
4129                 ql_dbg(ql_dbg_init, vha, 0x0038,
4130                     "MSI: Enabled.\n");
4131                 ha->flags.msi_enabled = 1;
4132         } else
4133                 ql_log(ql_log_warn, vha, 0x0039,
4134                     "Falling back-to INTa mode -- ret=%d.\n", ret);
4135 skip_msi:
4136
4137         /* Skip INTx on ISP82xx. */
4138         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
4139                 return QLA_FUNCTION_FAILED;
4140
4141         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
4142             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
4143             QLA2XXX_DRIVER_NAME, rsp);
4144         if (ret) {
4145                 ql_log(ql_log_warn, vha, 0x003a,
4146                     "Failed to reserve interrupt %d already in use.\n",
4147                     ha->pdev->irq);
4148                 goto fail;
4149         } else if (!ha->flags.msi_enabled) {
4150                 ql_dbg(ql_dbg_init, vha, 0x0125,
4151                     "INTa mode: Enabled.\n");
4152                 ha->flags.mr_intr_valid = 1;
4153         }
4154
4155 clear_risc_ints:
4156         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
4157                 goto fail;
4158
4159         spin_lock_irq(&ha->hardware_lock);
4160         wrt_reg_word(&reg->isp.semaphore, 0);
4161         spin_unlock_irq(&ha->hardware_lock);
4162
4163 fail:
4164         return ret;
4165 }
4166
4167 void
4168 qla2x00_free_irqs(scsi_qla_host_t *vha)
4169 {
4170         struct qla_hw_data *ha = vha->hw;
4171         struct rsp_que *rsp;
4172         struct qla_msix_entry *qentry;
4173         int i;
4174
4175         /*
4176          * We need to check that ha->rsp_q_map is valid in case we are called
4177          * from a probe failure context.
4178          */
4179         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
4180                 goto free_irqs;
4181         rsp = ha->rsp_q_map[0];
4182
4183         if (ha->flags.msix_enabled) {
4184                 for (i = 0; i < ha->msix_count; i++) {
4185                         qentry = &ha->msix_entries[i];
4186                         if (qentry->have_irq) {
4187                                 irq_set_affinity_notifier(qentry->vector, NULL);
4188                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
4189                         }
4190                 }
4191                 kfree(ha->msix_entries);
4192                 ha->msix_entries = NULL;
4193                 ha->flags.msix_enabled = 0;
4194                 ql_dbg(ql_dbg_init, vha, 0x0042,
4195                         "Disabled MSI-X.\n");
4196         } else {
4197                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
4198         }
4199
4200 free_irqs:
4201         pci_free_irq_vectors(ha->pdev);
4202 }
4203
4204 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
4205         struct qla_msix_entry *msix, int vector_type)
4206 {
4207         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
4208         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
4209         int ret;
4210
4211         scnprintf(msix->name, sizeof(msix->name),
4212             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
4213         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
4214         if (ret) {
4215                 ql_log(ql_log_fatal, vha, 0x00e6,
4216                     "MSI-X: Unable to register handler -- %x/%d.\n",
4217                     msix->vector, ret);
4218                 return ret;
4219         }
4220         msix->have_irq = 1;
4221         msix->handle = qpair;
4222         return ret;
4223 }