drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2011 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/delay.h>
  10 #include <linux/slab.h>
  11 #include <scsi/scsi_tcq.h>
  12 #include <scsi/scsi_bsg_fc.h>
  13 #include <scsi/scsi_eh.h>
  14
  15 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  16 static void qla2x00_process_completed_request(struct scsi_qla_host *,
  17         struct req_que *, uint32_t);
  18 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  19 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  20 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  21         sts_entry_t *);
  22
  23 /**
  24  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  25  * @irq:
  26  * @dev_id: SCSI driver HA context
  27  *
  28  * Called by system whenever the host adapter generates an interrupt.
  29  *
  30  * Returns handled flag.
  31  */
  32 irqreturn_t
  33 qla2100_intr_handler(int irq, void *dev_id)
  34 {
  35         scsi_qla_host_t *vha;
  36         struct qla_hw_data *ha;
  37         struct device_reg_2xxx __iomem *reg;
  38         int             status;
  39         unsigned long   iter;
  40         uint16_t        hccr;
  41         uint16_t        mb[4];
  42         struct rsp_que *rsp;
  43         unsigned long   flags;
  44
  45         rsp = (struct rsp_que *) dev_id;
  46         if (!rsp) {
  47                 ql_log(ql_log_info, NULL, 0x505d,
  48                     "%s: NULL response queue pointer.\n", __func__);
  49                 return (IRQ_NONE);
  50         }
  51
  52         ha = rsp->hw;
  53         reg = &ha->iobase->isp;
  54         status = 0;
  55
  56         spin_lock_irqsave(&ha->hardware_lock, flags);
  57         vha = pci_get_drvdata(ha->pdev);
  58         for (iter = 50; iter--; ) {
  59                 hccr = RD_REG_WORD(&reg->hccr);
  60                 if (hccr & HCCR_RISC_PAUSE) {
  61                         if (pci_channel_offline(ha->pdev))
  62                                 break;
  63
  64                         /*
  65                          * Issue a "HARD" reset in order for the RISC interrupt
  66                          * bit to be cleared.  Schedule a big hammer to get
  67                          * out of the RISC PAUSED state.
  68                          */
  69                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  70                         RD_REG_WORD(&reg->hccr);
  71
  72                         ha->isp_ops->fw_dump(vha, 1);
  73                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  74                         break;
  75                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  76                         break;
  77
  78                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  79                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  80                         RD_REG_WORD(&reg->hccr);
  81
  82                         /* Get mailbox data. */
  83                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  84                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  85                                 qla2x00_mbx_completion(vha, mb[0]);
  86                                 status |= MBX_INTERRUPT;
  87                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  88                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  89                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  90                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  91                                 qla2x00_async_event(vha, rsp, mb);
  92                         } else {
  93                                 /*EMPTY*/
  94                                 ql_dbg(ql_dbg_async, vha, 0x5025,
  95                                     "Unrecognized interrupt type (%d).\n",
  96                                     mb[0]);
  97                         }
  98                         /* Release mailbox registers. */
  99                         WRT_REG_WORD(&reg->semaphore, 0);
 100                         RD_REG_WORD(&reg->semaphore);
 101                 } else {
 102                         qla2x00_process_response_queue(rsp);
 103
 104                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 105                         RD_REG_WORD(&reg->hccr);
 106                 }
 107         }
 108         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 109
 110         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 111             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 112                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 113                 complete(&ha->mbx_intr_comp);
 114         }
 115
 116         return (IRQ_HANDLED);
 117 }
 118
 119 /**
 120  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 121  * @irq:
 122  * @dev_id: SCSI driver HA context
 123  *
 124  * Called by system whenever the host adapter generates an interrupt.
 125  *
 126  * Returns handled flag.
 127  */
 128 irqreturn_t
 129 qla2300_intr_handler(int irq, void *dev_id)
 130 {
 131         scsi_qla_host_t *vha;
 132         struct device_reg_2xxx __iomem *reg;
 133         int             status;
 134         unsigned long   iter;
 135         uint32_t        stat;
 136         uint16_t        hccr;
 137         uint16_t        mb[4];
 138         struct rsp_que *rsp;
 139         struct qla_hw_data *ha;
 140         unsigned long   flags;
 141
 142         rsp = (struct rsp_que *) dev_id;
 143         if (!rsp) {
 144                 ql_log(ql_log_info, NULL, 0x5058,
 145                     "%s: NULL response queue pointer.\n", __func__);
 146                 return (IRQ_NONE);
 147         }
 148
 149         ha = rsp->hw;
 150         reg = &ha->iobase->isp;
 151         status = 0;
 152
 153         spin_lock_irqsave(&ha->hardware_lock, flags);
 154         vha = pci_get_drvdata(ha->pdev);
 155         for (iter = 50; iter--; ) {
 156                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 157                 if (stat & HSR_RISC_PAUSED) {
 158                         if (unlikely(pci_channel_offline(ha->pdev)))
 159                                 break;
 160
 161                         hccr = RD_REG_WORD(&reg->hccr);
 162                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 163                                 ql_log(ql_log_warn, vha, 0x5026,
 164                                     "Parity error -- HCCR=%x, Dumping "
 165                                     "firmware.\n", hccr);
 166                         else
 167                                 ql_log(ql_log_warn, vha, 0x5027,
 168                                     "RISC paused -- HCCR=%x, Dumping "
 169                                     "firmware.\n", hccr);
 170
 171                         /*
 172                          * Issue a "HARD" reset in order for the RISC
 173                          * interrupt bit to be cleared.  Schedule a big
 174                          * hammer to get out of the RISC PAUSED state.
 175                          */
 176                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 177                         RD_REG_WORD(&reg->hccr);
 178
 179                         ha->isp_ops->fw_dump(vha, 1);
 180                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 181                         break;
 182                 } else if ((stat & HSR_RISC_INT) == 0)
 183                         break;
 184
 185                 switch (stat & 0xff) {
 186                 case 0x1:
 187                 case 0x2:
 188                 case 0x10:
 189                 case 0x11:
 190                         qla2x00_mbx_completion(vha, MSW(stat));
 191                         status |= MBX_INTERRUPT;
 192
 193                         /* Release mailbox registers. */
 194                         WRT_REG_WORD(&reg->semaphore, 0);
 195                         break;
 196                 case 0x12:
 197                         mb[0] = MSW(stat);
 198                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 199                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 200                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 201                         qla2x00_async_event(vha, rsp, mb);
 202                         break;
 203                 case 0x13:
 204                         qla2x00_process_response_queue(rsp);
 205                         break;
 206                 case 0x15:
 207                         mb[0] = MBA_CMPLT_1_16BIT;
 208                         mb[1] = MSW(stat);
 209                         qla2x00_async_event(vha, rsp, mb);
 210                         break;
 211                 case 0x16:
 212                         mb[0] = MBA_SCSI_COMPLETION;
 213                         mb[1] = MSW(stat);
 214                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 215                         qla2x00_async_event(vha, rsp, mb);
 216                         break;
 217                 default:
 218                         ql_dbg(ql_dbg_async, vha, 0x5028,
 219                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 220                         break;
 221                 }
 222                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 223                 RD_REG_WORD_RELAXED(&reg->hccr);
 224         }
 225         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 226
 227         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 228             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 229                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 230                 complete(&ha->mbx_intr_comp);
 231         }
 232
 233         return (IRQ_HANDLED);
 234 }
 235
 236 /**
 237  * qla2x00_mbx_completion() - Process mailbox command completions.
 238  * @ha: SCSI driver HA context
 239  * @mb0: Mailbox0 register
 240  */
 241 static void
 242 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 243 {
 244         uint16_t        cnt;
 245         uint32_t        mboxes;
 246         uint16_t __iomem *wptr;
 247         struct qla_hw_data *ha = vha->hw;
 248         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 249
 250         /* Read all mbox registers? */
 251         mboxes = (1 << ha->mbx_count) - 1;
 252         if (!ha->mcp)
 253                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERRROR.\n");
 254         else
 255                 mboxes = ha->mcp->in_mb;
 256
 257         /* Load return mailbox registers. */
 258         ha->flags.mbox_int = 1;
 259         ha->mailbox_out[0] = mb0;
 260         mboxes >>= 1;
 261         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 262
 263         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 264                 if (IS_QLA2200(ha) && cnt == 8)
 265                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 266                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 267                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 268                 else if (mboxes & BIT_0)
 269                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 270
 271                 wptr++;
 272                 mboxes >>= 1;
 273         }
 274 }
 275
 276 static void
 277 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 278 {
 279         static char *event[] =
 280                 { "Complete", "Request Notification", "Time Extension" };
 281         int rval;
 282         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 283         uint16_t __iomem *wptr;
 284         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 285
 286         /* Seed data -- mailbox1 -> mailbox7. */
 287         wptr = (uint16_t __iomem *)&reg24->mailbox1;
 288         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 289                 mb[cnt] = RD_REG_WORD(wptr);
 290
 291         ql_dbg(ql_dbg_async, vha, 0x5021,
 292             "Inter-Driver Communication %s -- "
 293             "%04x %04x %04x %04x %04x %04x %04x.\n",
 294             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 295             mb[4], mb[5], mb[6]);
 296
 297         /* Acknowledgement needed? [Notify && non-zero timeout]. */
 298         timeout = (descr >> 8) & 0xf;
 299         if (aen != MBA_IDC_NOTIFY || !timeout)
 300                 return;
 301
 302         ql_dbg(ql_dbg_async, vha, 0x5022,
 303             "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 304             vha->host_no, event[aen & 0xff], timeout);
 305
 306         rval = qla2x00_post_idc_ack_work(vha, mb);
 307         if (rval != QLA_SUCCESS)
 308                 ql_log(ql_log_warn, vha, 0x5023,
 309                     "IDC failed to post ACK.\n");
 310 }
 311
 312 /**
 313  * qla2x00_async_event() - Process aynchronous events.
 314  * @ha: SCSI driver HA context
 315  * @mb: Mailbox registers (0 - 3)
 316  */
 317 void
 318 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 319 {
 320 #define LS_UNKNOWN      2
 321         static char *link_speeds[] = { "1", "2", "?", "4", "8", "16", "10" };
 322         char            *link_speed;
 323         uint16_t        handle_cnt;
 324         uint16_t        cnt, mbx;
 325         uint32_t        handles[5];
 326         struct qla_hw_data *ha = vha->hw;
 327         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 328         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 329         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 330         uint32_t        rscn_entry, host_pid;
 331         unsigned long   flags;
 332
 333         /* Setup to process RIO completion. */
 334         handle_cnt = 0;
 335         if (IS_CNA_CAPABLE(ha))
 336                 goto skip_rio;
 337         switch (mb[0]) {
 338         case MBA_SCSI_COMPLETION:
 339                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 340                 handle_cnt = 1;
 341                 break;
 342         case MBA_CMPLT_1_16BIT:
 343                 handles[0] = mb[1];
 344                 handle_cnt = 1;
 345                 mb[0] = MBA_SCSI_COMPLETION;
 346                 break;
 347         case MBA_CMPLT_2_16BIT:
 348                 handles[0] = mb[1];
 349                 handles[1] = mb[2];
 350                 handle_cnt = 2;
 351                 mb[0] = MBA_SCSI_COMPLETION;
 352                 break;
 353         case MBA_CMPLT_3_16BIT:
 354                 handles[0] = mb[1];
 355                 handles[1] = mb[2];
 356                 handles[2] = mb[3];
 357                 handle_cnt = 3;
 358                 mb[0] = MBA_SCSI_COMPLETION;
 359                 break;
 360         case MBA_CMPLT_4_16BIT:
 361                 handles[0] = mb[1];
 362                 handles[1] = mb[2];
 363                 handles[2] = mb[3];
 364                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 365                 handle_cnt = 4;
 366                 mb[0] = MBA_SCSI_COMPLETION;
 367                 break;
 368         case MBA_CMPLT_5_16BIT:
 369                 handles[0] = mb[1];
 370                 handles[1] = mb[2];
 371                 handles[2] = mb[3];
 372                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 373                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 374                 handle_cnt = 5;
 375                 mb[0] = MBA_SCSI_COMPLETION;
 376                 break;
 377         case MBA_CMPLT_2_32BIT:
 378                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 379                 handles[1] = le32_to_cpu(
 380                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 381                     RD_MAILBOX_REG(ha, reg, 6));
 382                 handle_cnt = 2;
 383                 mb[0] = MBA_SCSI_COMPLETION;
 384                 break;
 385         default:
 386                 break;
 387         }
 388 skip_rio:
 389         switch (mb[0]) {
 390         case MBA_SCSI_COMPLETION:       /* Fast Post */
 391                 if (!vha->flags.online)
 392                         break;
 393
 394                 for (cnt = 0; cnt < handle_cnt; cnt++)
 395                         qla2x00_process_completed_request(vha, rsp->req,
 396                                 handles[cnt]);
 397                 break;
 398
 399         case MBA_RESET:                 /* Reset */
 400                 ql_dbg(ql_dbg_async, vha, 0x5002,
 401                     "Asynchronous RESET.\n");
 402
 403                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 404                 break;
 405
 406         case MBA_SYSTEM_ERR:            /* System Error */
 407                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha)) ?
 408                         RD_REG_WORD(&reg24->mailbox7) : 0;
 409                 ql_log(ql_log_warn, vha, 0x5003,
 410                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 411                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 412
 413                 ha->isp_ops->fw_dump(vha, 1);
 414
 415                 if (IS_FWI2_CAPABLE(ha)) {
 416                         if (mb[1] == 0 && mb[2] == 0) {
 417                                 ql_log(ql_log_fatal, vha, 0x5004,
 418                                     "Unrecoverable Hardware Error: adapter "
 419                                     "marked OFFLINE!\n");
 420                                 vha->flags.online = 0;
 421                                 vha->device_flags |= DFLG_DEV_FAILED;
 422                         } else {
 423                                 /* Check to see if MPI timeout occurred */
 424                                 if ((mbx & MBX_3) && (ha->flags.port0))
 425                                         set_bit(MPI_RESET_NEEDED,
 426                                             &vha->dpc_flags);
 427
 428                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 429                         }
 430                 } else if (mb[1] == 0) {
 431                         ql_log(ql_log_fatal, vha, 0x5005,
 432                             "Unrecoverable Hardware Error: adapter marked "
 433                             "OFFLINE!\n");
 434                         vha->flags.online = 0;
 435                         vha->device_flags |= DFLG_DEV_FAILED;
 436                 } else
 437                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 438                 break;
 439
 440         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 441                 ql_log(ql_log_warn, vha, 0x5006,
 442                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 443
 444                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 445                 break;
 446
 447         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 448                 ql_log(ql_log_warn, vha, 0x5007,
 449                     "ISP Response Transfer Error.\n");
 450
 451                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 452                 break;
 453
 454         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 455                 ql_dbg(ql_dbg_async, vha, 0x5008,
 456                     "Asynchronous WAKEUP_THRES.\n");
 457                 break;
 458
 459         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 460                 ql_dbg(ql_dbg_async, vha, 0x5009,
 461                     "LIP occurred (%x).\n", mb[1]);
 462
 463                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 464                         atomic_set(&vha->loop_state, LOOP_DOWN);
 465                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 466                         qla2x00_mark_all_devices_lost(vha, 1);
 467                 }
 468
 469                 if (vha->vp_idx) {
 470                         atomic_set(&vha->vp_state, VP_FAILED);
 471                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 472                 }
 473
 474                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 475                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 476
 477                 vha->flags.management_server_logged_in = 0;
 478                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 479                 break;
 480
 481         case MBA_LOOP_UP:               /* Loop Up Event */
 482                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 483                         link_speed = link_speeds[0];
 484                         ha->link_data_rate = PORT_SPEED_1GB;
 485                 } else {
 486                         link_speed = link_speeds[LS_UNKNOWN];
 487                         if (mb[1] < 6)
 488                                 link_speed = link_speeds[mb[1]];
 489                         else if (mb[1] == 0x13)
 490                                 link_speed = link_speeds[6];
 491                         ha->link_data_rate = mb[1];
 492                 }
 493
 494                 ql_dbg(ql_dbg_async, vha, 0x500a,
 495                     "LOOP UP detected (%s Gbps).\n", link_speed);
 496
 497                 vha->flags.management_server_logged_in = 0;
 498                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 499                 break;
 500
 501         case MBA_LOOP_DOWN:             /* Loop Down Event */
 502                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 503                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 504                 mbx = IS_QLA82XX(ha) ? RD_REG_WORD(&reg82->mailbox_out[4]) : mbx;
 505                 ql_dbg(ql_dbg_async, vha, 0x500b,
 506                     "LOOP DOWN detected (%x %x %x %x).\n",
 507                     mb[1], mb[2], mb[3], mbx);
 508
 509                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 510                         atomic_set(&vha->loop_state, LOOP_DOWN);
 511                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 512                         vha->device_flags |= DFLG_NO_CABLE;
 513                         qla2x00_mark_all_devices_lost(vha, 1);
 514                 }
 515
 516                 if (vha->vp_idx) {
 517                         atomic_set(&vha->vp_state, VP_FAILED);
 518                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 519                 }
 520
 521                 vha->flags.management_server_logged_in = 0;
 522                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 523                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 524                 break;
 525
 526         case MBA_LIP_RESET:             /* LIP reset occurred */
 527                 ql_dbg(ql_dbg_async, vha, 0x500c,
 528                     "LIP reset occurred (%x).\n", mb[1]);
 529
 530                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 531                         atomic_set(&vha->loop_state, LOOP_DOWN);
 532                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 533                         qla2x00_mark_all_devices_lost(vha, 1);
 534                 }
 535
 536                 if (vha->vp_idx) {
 537                         atomic_set(&vha->vp_state, VP_FAILED);
 538                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 539                 }
 540
 541                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 542
 543                 ha->operating_mode = LOOP;
 544                 vha->flags.management_server_logged_in = 0;
 545                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 546                 break;
 547
 548         /* case MBA_DCBX_COMPLETE: */
 549         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 550                 if (IS_QLA2100(ha))
 551                         break;
 552
 553                 if (IS_QLA81XX(ha) || IS_QLA82XX(ha) || IS_QLA8031(ha)) {
 554                         ql_dbg(ql_dbg_async, vha, 0x500d,
 555                             "DCBX Completed -- %04x %04x %04x.\n",
 556                             mb[1], mb[2], mb[3]);
 557                         if (ha->notify_dcbx_comp)
 558                                 complete(&ha->dcbx_comp);
 559
 560                 } else
 561                         ql_dbg(ql_dbg_async, vha, 0x500e,
 562                             "Asynchronous P2P MODE received.\n");
 563
 564                 /*
 565                  * Until there's a transition from loop down to loop up, treat
 566                  * this as loop down only.
 567                  */
 568                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 569                         atomic_set(&vha->loop_state, LOOP_DOWN);
 570                         if (!atomic_read(&vha->loop_down_timer))
 571                                 atomic_set(&vha->loop_down_timer,
 572                                     LOOP_DOWN_TIME);
 573                         qla2x00_mark_all_devices_lost(vha, 1);
 574                 }
 575
 576                 if (vha->vp_idx) {
 577                         atomic_set(&vha->vp_state, VP_FAILED);
 578                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 579                 }
 580
 581                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 582                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 583
 584                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 585                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 586
 587                 ha->flags.gpsc_supported = 1;
 588                 vha->flags.management_server_logged_in = 0;
 589                 break;
 590
 591         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 592                 if (IS_QLA2100(ha))
 593                         break;
 594
 595                 ql_dbg(ql_dbg_async, vha, 0x500f,
 596                     "Configuration change detected: value=%x.\n", mb[1]);
 597
 598                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 599                         atomic_set(&vha->loop_state, LOOP_DOWN);
 600                         if (!atomic_read(&vha->loop_down_timer))
 601                                 atomic_set(&vha->loop_down_timer,
 602                                     LOOP_DOWN_TIME);
 603                         qla2x00_mark_all_devices_lost(vha, 1);
 604                 }
 605
 606                 if (vha->vp_idx) {
 607                         atomic_set(&vha->vp_state, VP_FAILED);
 608                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 609                 }
 610
 611                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 612                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 613                 break;
 614
 615         case MBA_PORT_UPDATE:           /* Port database update */
 616                 /*
 617                  * Handle only global and vn-port update events
 618                  *
 619                  * Relevant inputs:
 620                  * mb[1] = N_Port handle of changed port
 621                  * OR 0xffff for global event
 622                  * mb[2] = New login state
 623                  * 7 = Port logged out
 624                  * mb[3] = LSB is vp_idx, 0xff = all vps
 625                  *
 626                  * Skip processing if:
 627                  *       Event is global, vp_idx is NOT all vps,
 628                  *           vp_idx does not match
 629                  *       Event is not global, vp_idx does not match
 630                  */
 631                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 632                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 633                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 634                         break;
 635
 636                 /* Global event -- port logout or port unavailable. */
 637                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 638                         ql_dbg(ql_dbg_async, vha, 0x5010,
 639                             "Port unavailable %04x %04x %04x.\n",
 640                             mb[1], mb[2], mb[3]);
 641
 642                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 643                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 644                                 atomic_set(&vha->loop_down_timer,
 645                                     LOOP_DOWN_TIME);
 646                                 vha->device_flags |= DFLG_NO_CABLE;
 647                                 qla2x00_mark_all_devices_lost(vha, 1);
 648                         }
 649
 650                         if (vha->vp_idx) {
 651                                 atomic_set(&vha->vp_state, VP_FAILED);
 652                                 fc_vport_set_state(vha->fc_vport,
 653                                     FC_VPORT_FAILED);
 654                                 qla2x00_mark_all_devices_lost(vha, 1);
 655                         }
 656
 657                         vha->flags.management_server_logged_in = 0;
 658                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 659                         break;
 660                 }
 661
 662                 /*
 663                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 664                  * event etc. earlier indicating loop is down) then process
 665                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 666                  */
 667                 atomic_set(&vha->loop_down_timer, 0);
 668                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 669                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 670                         ql_dbg(ql_dbg_async, vha, 0x5011,
 671                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
 672                             mb[1], mb[2], mb[3]);
 673                         break;
 674                 }
 675
 676                 ql_dbg(ql_dbg_async, vha, 0x5012,
 677                     "Port database changed %04x %04x %04x.\n",
 678                     mb[1], mb[2], mb[3]);
 679
 680                 /*
 681                  * Mark all devices as missing so we will login again.
 682                  */
 683                 atomic_set(&vha->loop_state, LOOP_UP);
 684
 685                 qla2x00_mark_all_devices_lost(vha, 1);
 686
 687                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 688                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 689                 break;
 690
 691         case MBA_RSCN_UPDATE:           /* State Change Registration */
 692                 /* Check if the Vport has issued a SCR */
 693                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 694                         break;
 695                 /* Only handle SCNs for our Vport index. */
 696                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 697                         break;
 698
 699                 ql_dbg(ql_dbg_async, vha, 0x5013,
 700                     "RSCN database changed -- %04x %04x %04x.\n",
 701                     mb[1], mb[2], mb[3]);
 702
 703                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 704                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 705                                 | vha->d_id.b.al_pa;
 706                 if (rscn_entry == host_pid) {
 707                         ql_dbg(ql_dbg_async, vha, 0x5014,
 708                             "Ignoring RSCN update to local host "
 709                             "port ID (%06x).\n", host_pid);
 710                         break;
 711                 }
 712
 713                 /* Ignore reserved bits from RSCN-payload. */
 714                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 715
 716                 atomic_set(&vha->loop_down_timer, 0);
 717                 vha->flags.management_server_logged_in = 0;
 718
 719                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 720                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 721                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 722                 break;
 723
 724         /* case MBA_RIO_RESPONSE: */
 725         case MBA_ZIO_RESPONSE:
 726                 ql_dbg(ql_dbg_async, vha, 0x5015,
 727                     "[R|Z]IO update completion.\n");
 728
 729                 if (IS_FWI2_CAPABLE(ha))
 730                         qla24xx_process_response_queue(vha, rsp);
 731                 else
 732                         qla2x00_process_response_queue(rsp);
 733                 break;
 734
 735         case MBA_DISCARD_RND_FRAME:
 736                 ql_dbg(ql_dbg_async, vha, 0x5016,
 737                     "Discard RND Frame -- %04x %04x %04x.\n",
 738                     mb[1], mb[2], mb[3]);
 739                 break;
 740
 741         case MBA_TRACE_NOTIFICATION:
 742                 ql_dbg(ql_dbg_async, vha, 0x5017,
 743                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
 744                 break;
 745
 746         case MBA_ISP84XX_ALERT:
 747                 ql_dbg(ql_dbg_async, vha, 0x5018,
 748                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
 749                     mb[1], mb[2], mb[3]);
 750
 751                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 752                 switch (mb[1]) {
 753                 case A84_PANIC_RECOVERY:
 754                         ql_log(ql_log_info, vha, 0x5019,
 755                             "Alert 84XX: panic recovery %04x %04x.\n",
 756                             mb[2], mb[3]);
 757                         break;
 758                 case A84_OP_LOGIN_COMPLETE:
 759                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 760                         ql_log(ql_log_info, vha, 0x501a,
 761                             "Alert 84XX: firmware version %x.\n",
 762                             ha->cs84xx->op_fw_version);
 763                         break;
 764                 case A84_DIAG_LOGIN_COMPLETE:
 765                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 766                         ql_log(ql_log_info, vha, 0x501b,
 767                             "Alert 84XX: diagnostic firmware version %x.\n",
 768                             ha->cs84xx->diag_fw_version);
 769                         break;
 770                 case A84_GOLD_LOGIN_COMPLETE:
 771                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 772                         ha->cs84xx->fw_update = 1;
 773                         ql_log(ql_log_info, vha, 0x501c,
 774                             "Alert 84XX: gold firmware version %x.\n",
 775                             ha->cs84xx->gold_fw_version);
 776                         break;
 777                 default:
 778                         ql_log(ql_log_warn, vha, 0x501d,
 779                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
 780                             mb[1], mb[2], mb[3]);
 781                 }
 782                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
 783                 break;
 784         case MBA_DCBX_START:
 785                 ql_dbg(ql_dbg_async, vha, 0x501e,
 786                     "DCBX Started -- %04x %04x %04x.\n",
 787                     mb[1], mb[2], mb[3]);
 788                 break;
 789         case MBA_DCBX_PARAM_UPDATE:
 790                 ql_dbg(ql_dbg_async, vha, 0x501f,
 791                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
 792                     mb[1], mb[2], mb[3]);
 793                 break;
 794         case MBA_FCF_CONF_ERR:
 795                 ql_dbg(ql_dbg_async, vha, 0x5020,
 796                     "FCF Configuration Error -- %04x %04x %04x.\n",
 797                     mb[1], mb[2], mb[3]);
 798                 break;
 799         case MBA_IDC_COMPLETE:
 800         case MBA_IDC_NOTIFY:
 801         case MBA_IDC_TIME_EXT:
 802                 qla81xx_idc_event(vha, mb[0], mb[1]);
 803                 break;
 804         default:
 805                 ql_dbg(ql_dbg_async, vha, 0x5057,
 806                     "Unknown AEN:%04x %04x %04x %04x\n",
 807                     mb[0], mb[1], mb[2], mb[3]);
 808         }
 809
 810         if (!vha->vp_idx && ha->num_vhosts)
 811                 qla2x00_alert_all_vps(rsp, mb);
 812 }
 813
 814 /**
 815  * qla2x00_process_completed_request() - Process a Fast Post response.
 816  * @ha: SCSI driver HA context
 817  * @index: SRB index
 818  */
 819 static void
 820 qla2x00_process_completed_request(struct scsi_qla_host *vha,
 821                                 struct req_que *req, uint32_t index)
 822 {
 823         srb_t *sp;
 824         struct qla_hw_data *ha = vha->hw;
 825
 826         /* Validate handle. */
 827         if (index >= MAX_OUTSTANDING_COMMANDS) {
 828                 ql_log(ql_log_warn, vha, 0x3014,
 829                     "Invalid SCSI command index (%x).\n", index);
 830
 831                 if (IS_QLA82XX(ha))
 832                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 833                 else
 834                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 835                 return;
 836         }
 837
 838         sp = req->outstanding_cmds[index];
 839         if (sp) {
 840                 /* Free outstanding command slot. */
 841                 req->outstanding_cmds[index] = NULL;
 842
 843                 /* Save ISP completion status */
 844                 sp->done(ha, sp, DID_OK << 16);
 845         } else {
 846                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
 847
 848                 if (IS_QLA82XX(ha))
 849                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 850                 else
 851                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 852         }
 853 }
 854
 855 static srb_t *
 856 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 857     struct req_que *req, void *iocb)
 858 {
 859         struct qla_hw_data *ha = vha->hw;
 860         sts_entry_t *pkt = iocb;
 861         srb_t *sp = NULL;
 862         uint16_t index;
 863
 864         index = LSW(pkt->handle);
 865         if (index >= MAX_OUTSTANDING_COMMANDS) {
 866                 ql_log(ql_log_warn, vha, 0x5031,
 867                     "Invalid command index (%x).\n", index);
 868                 if (IS_QLA82XX(ha))
 869                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 870                 else
 871                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 872                 goto done;
 873         }
 874         sp = req->outstanding_cmds[index];
 875         if (!sp) {
 876                 ql_log(ql_log_warn, vha, 0x5032,
 877                     "Invalid completion handle (%x) -- timed-out.\n", index);
 878                 return sp;
 879         }
 880         if (sp->handle != index) {
 881                 ql_log(ql_log_warn, vha, 0x5033,
 882                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
 883                 return NULL;
 884         }
 885
 886         req->outstanding_cmds[index] = NULL;
 887
 888 done:
 889         return sp;
 890 }
 891
 892 static void
 893 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
 894     struct mbx_entry *mbx)
 895 {
 896         const char func[] = "MBX-IOCB";
 897         const char *type;
 898         fc_port_t *fcport;
 899         srb_t *sp;
 900         struct srb_iocb *lio;
 901         uint16_t *data;
 902         uint16_t status;
 903
 904         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
 905         if (!sp)
 906                 return;
 907
 908         lio = &sp->u.iocb_cmd;
 909         type = sp->name;
 910         fcport = sp->fcport;
 911         data = lio->u.logio.data;
 912
 913         data[0] = MBS_COMMAND_ERROR;
 914         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
 915             QLA_LOGIO_LOGIN_RETRIED : 0;
 916         if (mbx->entry_status) {
 917                 ql_dbg(ql_dbg_async, vha, 0x5043,
 918                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
 919                     "entry-status=%x status=%x state-flag=%x "
 920                     "status-flags=%x.\n", type, sp->handle,
 921                     fcport->d_id.b.domain, fcport->d_id.b.area,
 922                     fcport->d_id.b.al_pa, mbx->entry_status,
 923                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
 924                     le16_to_cpu(mbx->status_flags));
 925
 926                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
 927                     (uint8_t *)mbx, sizeof(*mbx));
 928
 929                 goto logio_done;
 930         }
 931
 932         status = le16_to_cpu(mbx->status);
 933         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
 934             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
 935                 status = 0;
 936         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
 937                 ql_dbg(ql_dbg_async, vha, 0x5045,
 938                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
 939                     type, sp->handle, fcport->d_id.b.domain,
 940                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
 941                     le16_to_cpu(mbx->mb1));
 942
 943                 data[0] = MBS_COMMAND_COMPLETE;
 944                 if (sp->type == SRB_LOGIN_CMD) {
 945                         fcport->port_type = FCT_TARGET;
 946                         if (le16_to_cpu(mbx->mb1) & BIT_0)
 947                                 fcport->port_type = FCT_INITIATOR;
 948                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
 949                                 fcport->flags |= FCF_FCP2_DEVICE;
 950                 }
 951                 goto logio_done;
 952         }
 953
 954         data[0] = le16_to_cpu(mbx->mb0);
 955         switch (data[0]) {
 956         case MBS_PORT_ID_USED:
 957                 data[1] = le16_to_cpu(mbx->mb1);
 958                 break;
 959         case MBS_LOOP_ID_USED:
 960                 break;
 961         default:
 962                 data[0] = MBS_COMMAND_ERROR;
 963                 break;
 964         }
 965
 966         ql_log(ql_log_warn, vha, 0x5046,
 967             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
 968             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
 969             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
 970             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
 971             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
 972             le16_to_cpu(mbx->mb7));
 973
 974 logio_done:
 975         sp->done(vha, sp, 0);
 976 }
 977
 978 static void
 979 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
 980     sts_entry_t *pkt, int iocb_type)
 981 {
 982         const char func[] = "CT_IOCB";
 983         const char *type;
 984         srb_t *sp;
 985         struct fc_bsg_job *bsg_job;
 986         uint16_t comp_status;
 987         int res;
 988
 989         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
 990         if (!sp)
 991                 return;
 992
 993         bsg_job = sp->u.bsg_job;
 994
 995         type = "ct pass-through";
 996
 997         comp_status = le16_to_cpu(pkt->comp_status);
 998
 999         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1000          * fc payload  to the caller
1001          */
1002         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1003         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1004
1005         if (comp_status != CS_COMPLETE) {
1006                 if (comp_status == CS_DATA_UNDERRUN) {
1007                         res = DID_OK << 16;
1008                         bsg_job->reply->reply_payload_rcv_len =
1009                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1010
1011                         ql_log(ql_log_warn, vha, 0x5048,
1012                             "CT pass-through-%s error "
1013                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1014                             type, comp_status,
1015                             bsg_job->reply->reply_payload_rcv_len);
1016                 } else {
1017                         ql_log(ql_log_warn, vha, 0x5049,
1018                             "CT pass-through-%s error "
1019                             "comp_status-status=0x%x.\n", type, comp_status);
1020                         res = DID_ERROR << 16;
1021                         bsg_job->reply->reply_payload_rcv_len = 0;
1022                 }
1023                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1024                     (uint8_t *)pkt, sizeof(*pkt));
1025         } else {
1026                 res = DID_OK << 16;
1027                 bsg_job->reply->reply_payload_rcv_len =
1028                     bsg_job->reply_payload.payload_len;
1029                 bsg_job->reply_len = 0;
1030         }
1031
1032         sp->done(vha, sp, res);
1033 }
1034
1035 static void
1036 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1037     struct sts_entry_24xx *pkt, int iocb_type)
1038 {
1039         const char func[] = "ELS_CT_IOCB";
1040         const char *type;
1041         srb_t *sp;
1042         struct fc_bsg_job *bsg_job;
1043         uint16_t comp_status;
1044         uint32_t fw_status[3];
1045         uint8_t* fw_sts_ptr;
1046         int res;
1047
1048         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1049         if (!sp)
1050                 return;
1051         bsg_job = sp->u.bsg_job;
1052
1053         type = NULL;
1054         switch (sp->type) {
1055         case SRB_ELS_CMD_RPT:
1056         case SRB_ELS_CMD_HST:
1057                 type = "els";
1058                 break;
1059         case SRB_CT_CMD:
1060                 type = "ct pass-through";
1061                 break;
1062         default:
1063                 ql_dbg(ql_dbg_user, vha, 0x503e,
1064                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1065                 return;
1066         }
1067
1068         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1069         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1070         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1071
1072         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1073          * fc payload  to the caller
1074          */
1075         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1076         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1077
1078         if (comp_status != CS_COMPLETE) {
1079                 if (comp_status == CS_DATA_UNDERRUN) {
1080                         res = DID_OK << 16;
1081                         bsg_job->reply->reply_payload_rcv_len =
1082                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1083
1084                         ql_dbg(ql_dbg_user, vha, 0x503f,
1085                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1086                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1087                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1088                             le16_to_cpu(((struct els_sts_entry_24xx *)
1089                                 pkt)->total_byte_count));
1090                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1091                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1092                 }
1093                 else {
1094                         ql_dbg(ql_dbg_user, vha, 0x5040,
1095                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1096                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1097                             type, sp->handle, comp_status,
1098                             le16_to_cpu(((struct els_sts_entry_24xx *)
1099                                 pkt)->error_subcode_1),
1100                             le16_to_cpu(((struct els_sts_entry_24xx *)
1101                                     pkt)->error_subcode_2));
1102                         res = DID_ERROR << 16;
1103                         bsg_job->reply->reply_payload_rcv_len = 0;
1104                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1105                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1106                 }
1107                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1108                                 (uint8_t *)pkt, sizeof(*pkt));
1109         }
1110         else {
1111                 res =  DID_OK << 16;
1112                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1113                 bsg_job->reply_len = 0;
1114         }
1115
1116         sp->done(vha, sp, res);
1117 }
1118
1119 static void
1120 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1121     struct logio_entry_24xx *logio)
1122 {
1123         const char func[] = "LOGIO-IOCB";
1124         const char *type;
1125         fc_port_t *fcport;
1126         srb_t *sp;
1127         struct srb_iocb *lio;
1128         uint16_t *data;
1129         uint32_t iop[2];
1130
1131         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1132         if (!sp)
1133                 return;
1134
1135         lio = &sp->u.iocb_cmd;
1136         type = sp->name;
1137         fcport = sp->fcport;
1138         data = lio->u.logio.data;
1139
1140         data[0] = MBS_COMMAND_ERROR;
1141         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1142                 QLA_LOGIO_LOGIN_RETRIED : 0;
1143         if (logio->entry_status) {
1144                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1145                     "Async-%s error entry - hdl=%x"
1146                     "portid=%02x%02x%02x entry-status=%x.\n",
1147                     type, sp->handle, fcport->d_id.b.domain,
1148                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1149                     logio->entry_status);
1150                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1151                     (uint8_t *)logio, sizeof(*logio));
1152
1153                 goto logio_done;
1154         }
1155
1156         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1157                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1158                     "Async-%s complete - hdl=%x portid=%02x%02x%02x "
1159                     "iop0=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1160                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1161                     le32_to_cpu(logio->io_parameter[0]));
1162
1163                 data[0] = MBS_COMMAND_COMPLETE;
1164                 if (sp->type != SRB_LOGIN_CMD)
1165                         goto logio_done;
1166
1167                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1168                 if (iop[0] & BIT_4) {
1169                         fcport->port_type = FCT_TARGET;
1170                         if (iop[0] & BIT_8)
1171                                 fcport->flags |= FCF_FCP2_DEVICE;
1172                 } else if (iop[0] & BIT_5)
1173                         fcport->port_type = FCT_INITIATOR;
1174
1175                 if (logio->io_parameter[7] || logio->io_parameter[8])
1176                         fcport->supported_classes |= FC_COS_CLASS2;
1177                 if (logio->io_parameter[9] || logio->io_parameter[10])
1178                         fcport->supported_classes |= FC_COS_CLASS3;
1179
1180                 goto logio_done;
1181         }
1182
1183         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1184         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1185         switch (iop[0]) {
1186         case LSC_SCODE_PORTID_USED:
1187                 data[0] = MBS_PORT_ID_USED;
1188                 data[1] = LSW(iop[1]);
1189                 break;
1190         case LSC_SCODE_NPORT_USED:
1191                 data[0] = MBS_LOOP_ID_USED;
1192                 break;
1193         default:
1194                 data[0] = MBS_COMMAND_ERROR;
1195                 break;
1196         }
1197
1198         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1199             "Async-%s failed - hdl=%x portid=%02x%02x%02x comp=%x "
1200             "iop0=%x iop1=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1201             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1202             le16_to_cpu(logio->comp_status),
1203             le32_to_cpu(logio->io_parameter[0]),
1204             le32_to_cpu(logio->io_parameter[1]));
1205
1206 logio_done:
1207         sp->done(vha, sp, 0);
1208 }
1209
1210 static void
1211 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1212     struct tsk_mgmt_entry *tsk)
1213 {
1214         const char func[] = "TMF-IOCB";
1215         const char *type;
1216         fc_port_t *fcport;
1217         srb_t *sp;
1218         struct srb_iocb *iocb;
1219         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1220         int error = 1;
1221
1222         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1223         if (!sp)
1224                 return;
1225
1226         iocb = &sp->u.iocb_cmd;
1227         type = sp->name;
1228         fcport = sp->fcport;
1229
1230         if (sts->entry_status) {
1231                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1232                     "Async-%s error - hdl=%x entry-status(%x).\n",
1233                     type, sp->handle, sts->entry_status);
1234         } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1235                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1236                     "Async-%s error - hdl=%x completion status(%x).\n",
1237                     type, sp->handle, sts->comp_status);
1238         } else if (!(le16_to_cpu(sts->scsi_status) &
1239             SS_RESPONSE_INFO_LEN_VALID)) {
1240                 ql_log(ql_log_warn, fcport->vha, 0x503a,
1241                     "Async-%s error - hdl=%x no response info(%x).\n",
1242                     type, sp->handle, sts->scsi_status);
1243         } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1244                 ql_log(ql_log_warn, fcport->vha, 0x503b,
1245                     "Async-%s error - hdl=%x not enough response(%d).\n",
1246                     type, sp->handle, sts->rsp_data_len);
1247         } else if (sts->data[3]) {
1248                 ql_log(ql_log_warn, fcport->vha, 0x503c,
1249                     "Async-%s error - hdl=%x response(%x).\n",
1250                     type, sp->handle, sts->data[3]);
1251         } else {
1252                 error = 0;
1253         }
1254
1255         if (error) {
1256                 iocb->u.tmf.data = error;
1257                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1258                     (uint8_t *)sts, sizeof(*sts));
1259         }
1260
1261         sp->done(vha, sp, 0);
1262 }
1263
1264 /**
1265  * qla2x00_process_response_queue() - Process response queue entries.
1266  * @ha: SCSI driver HA context
1267  */
1268 void
1269 qla2x00_process_response_queue(struct rsp_que *rsp)
1270 {
1271         struct scsi_qla_host *vha;
1272         struct qla_hw_data *ha = rsp->hw;
1273         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1274         sts_entry_t     *pkt;
1275         uint16_t        handle_cnt;
1276         uint16_t        cnt;
1277
1278         vha = pci_get_drvdata(ha->pdev);
1279
1280         if (!vha->flags.online)
1281                 return;
1282
1283         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1284                 pkt = (sts_entry_t *)rsp->ring_ptr;
1285
1286                 rsp->ring_index++;
1287                 if (rsp->ring_index == rsp->length) {
1288                         rsp->ring_index = 0;
1289                         rsp->ring_ptr = rsp->ring;
1290                 } else {
1291                         rsp->ring_ptr++;
1292                 }
1293
1294                 if (pkt->entry_status != 0) {
1295                         qla2x00_error_entry(vha, rsp, pkt);
1296                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1297                         wmb();
1298                         continue;
1299                 }
1300
1301                 switch (pkt->entry_type) {
1302                 case STATUS_TYPE:
1303                         qla2x00_status_entry(vha, rsp, pkt);
1304                         break;
1305                 case STATUS_TYPE_21:
1306                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1307                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1308                                 qla2x00_process_completed_request(vha, rsp->req,
1309                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1310                         }
1311                         break;
1312                 case STATUS_TYPE_22:
1313                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1314                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1315                                 qla2x00_process_completed_request(vha, rsp->req,
1316                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1317                         }
1318                         break;
1319                 case STATUS_CONT_TYPE:
1320                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1321                         break;
1322                 case MBX_IOCB_TYPE:
1323                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1324                             (struct mbx_entry *)pkt);
1325                         break;
1326                 case CT_IOCB_TYPE:
1327                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1328                         break;
1329                 default:
1330                         /* Type Not Supported. */
1331                         ql_log(ql_log_warn, vha, 0x504a,
1332                             "Received unknown response pkt type %x "
1333                             "entry status=%x.\n",
1334                             pkt->entry_type, pkt->entry_status);
1335                         break;
1336                 }
1337                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1338                 wmb();
1339         }
1340
1341         /* Adjust ring index */
1342         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1343 }
1344
1345 static inline void
1346 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1347                      uint32_t sense_len, struct rsp_que *rsp, int res)
1348 {
1349         struct scsi_qla_host *vha = sp->fcport->vha;
1350         struct scsi_cmnd *cp = GET_CMD_SP(sp);
1351         uint32_t track_sense_len;
1352
1353         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1354                 sense_len = SCSI_SENSE_BUFFERSIZE;
1355
1356         SET_CMD_SENSE_LEN(sp, sense_len);
1357         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
1358         track_sense_len = sense_len;
1359
1360         if (sense_len > par_sense_len)
1361                 sense_len = par_sense_len;
1362
1363         memcpy(cp->sense_buffer, sense_data, sense_len);
1364
1365         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
1366         track_sense_len -= sense_len;
1367         SET_CMD_SENSE_LEN(sp, track_sense_len);
1368
1369         if (track_sense_len != 0) {
1370                 rsp->status_srb = sp;
1371                 cp->result = res;
1372         }
1373
1374         if (sense_len) {
1375                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
1376                     "Check condition Sense data, nexus%ld:%d:%d cmd=%p.\n",
1377                     sp->fcport->vha->host_no, cp->device->id, cp->device->lun,
1378                     cp);
1379                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
1380                     cp->sense_buffer, sense_len);
1381         }
1382 }
1383
1384 struct scsi_dif_tuple {
1385         __be16 guard;       /* Checksum */
1386         __be16 app_tag;         /* APPL identifer */
1387         __be32 ref_tag;         /* Target LBA or indirect LBA */
1388 };
1389
1390 /*
1391  * Checks the guard or meta-data for the type of error
1392  * detected by the HBA. In case of errors, we set the
1393  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1394  * to indicate to the kernel that the HBA detected error.
1395  */
1396 static inline int
1397 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1398 {
1399         struct scsi_qla_host *vha = sp->fcport->vha;
1400         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1401         uint8_t         *ap = &sts24->data[12];
1402         uint8_t         *ep = &sts24->data[20];
1403         uint32_t        e_ref_tag, a_ref_tag;
1404         uint16_t        e_app_tag, a_app_tag;
1405         uint16_t        e_guard, a_guard;
1406
1407         /*
1408          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
1409          * would make guard field appear at offset 2
1410          */
1411         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
1412         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
1413         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
1414         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
1415         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
1416         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
1417
1418         ql_dbg(ql_dbg_io, vha, 0x3023,
1419             "iocb(s) %p Returned STATUS.\n", sts24);
1420
1421         ql_dbg(ql_dbg_io, vha, 0x3024,
1422             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1423             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1424             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
1425             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1426             a_app_tag, e_app_tag, a_guard, e_guard);
1427
1428         /*
1429          * Ignore sector if:
1430          * For type     3: ref & app tag is all 'f's
1431          * For type 0,1,2: app tag is all 'f's
1432          */
1433         if ((a_app_tag == 0xffff) &&
1434             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
1435              (a_ref_tag == 0xffffffff))) {
1436                 uint32_t blocks_done, resid;
1437                 sector_t lba_s = scsi_get_lba(cmd);
1438
1439                 /* 2TB boundary case covered automatically with this */
1440                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
1441
1442                 resid = scsi_bufflen(cmd) - (blocks_done *
1443                     cmd->device->sector_size);
1444
1445                 scsi_set_resid(cmd, resid);
1446                 cmd->result = DID_OK << 16;
1447
1448                 /* Update protection tag */
1449                 if (scsi_prot_sg_count(cmd)) {
1450                         uint32_t i, j = 0, k = 0, num_ent;
1451                         struct scatterlist *sg;
1452                         struct sd_dif_tuple *spt;
1453
1454                         /* Patch the corresponding protection tags */
1455                         scsi_for_each_prot_sg(cmd, sg,
1456                             scsi_prot_sg_count(cmd), i) {
1457                                 num_ent = sg_dma_len(sg) / 8;
1458                                 if (k + num_ent < blocks_done) {
1459                                         k += num_ent;
1460                                         continue;
1461                                 }
1462                                 j = blocks_done - k - 1;
1463                                 k = blocks_done;
1464                                 break;
1465                         }
1466
1467                         if (k != blocks_done) {
1468                                 ql_log(ql_log_warn, vha, 0x302f,
1469                                     "unexpected tag values tag:lba=%x:%llx)\n",
1470                                     e_ref_tag, (unsigned long long)lba_s);
1471                                 return 1;
1472                         }
1473
1474                         spt = page_address(sg_page(sg)) + sg->offset;
1475                         spt += j;
1476
1477                         spt->app_tag = 0xffff;
1478                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
1479                                 spt->ref_tag = 0xffffffff;
1480                 }
1481
1482                 return 0;
1483         }
1484
1485         /* check guard */
1486         if (e_guard != a_guard) {
1487                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1488                     0x10, 0x1);
1489                 set_driver_byte(cmd, DRIVER_SENSE);
1490                 set_host_byte(cmd, DID_ABORT);
1491                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1492                 return 1;
1493         }
1494
1495         /* check ref tag */
1496         if (e_ref_tag != a_ref_tag) {
1497                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1498                     0x10, 0x3);
1499                 set_driver_byte(cmd, DRIVER_SENSE);
1500                 set_host_byte(cmd, DID_ABORT);
1501                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1502                 return 1;
1503         }
1504
1505         /* check appl tag */
1506         if (e_app_tag != a_app_tag) {
1507                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1508                     0x10, 0x2);
1509                 set_driver_byte(cmd, DRIVER_SENSE);
1510                 set_host_byte(cmd, DID_ABORT);
1511                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1512                 return 1;
1513         }
1514
1515         return 1;
1516 }
1517
1518 /**
1519  * qla2x00_status_entry() - Process a Status IOCB entry.
1520  * @ha: SCSI driver HA context
1521  * @pkt: Entry pointer
1522  */
1523 static void
1524 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1525 {
1526         srb_t           *sp;
1527         fc_port_t       *fcport;
1528         struct scsi_cmnd *cp;
1529         sts_entry_t *sts;
1530         struct sts_entry_24xx *sts24;
1531         uint16_t        comp_status;
1532         uint16_t        scsi_status;
1533         uint16_t        ox_id;
1534         uint8_t         lscsi_status;
1535         int32_t         resid;
1536         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1537             fw_resid_len;
1538         uint8_t         *rsp_info, *sense_data;
1539         struct qla_hw_data *ha = vha->hw;
1540         uint32_t handle;
1541         uint16_t que;
1542         struct req_que *req;
1543         int logit = 1;
1544         int res = 0;
1545
1546         sts = (sts_entry_t *) pkt;
1547         sts24 = (struct sts_entry_24xx *) pkt;
1548         if (IS_FWI2_CAPABLE(ha)) {
1549                 comp_status = le16_to_cpu(sts24->comp_status);
1550                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1551         } else {
1552                 comp_status = le16_to_cpu(sts->comp_status);
1553                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1554         }
1555         handle = (uint32_t) LSW(sts->handle);
1556         que = MSW(sts->handle);
1557         req = ha->req_q_map[que];
1558
1559         /* Fast path completion. */
1560         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1561                 qla2x00_process_completed_request(vha, req, handle);
1562
1563                 return;
1564         }
1565
1566         /* Validate handle. */
1567         if (handle < MAX_OUTSTANDING_COMMANDS) {
1568                 sp = req->outstanding_cmds[handle];
1569                 req->outstanding_cmds[handle] = NULL;
1570         } else
1571                 sp = NULL;
1572
1573         if (sp == NULL) {
1574                 ql_dbg(ql_dbg_io, vha, 0x3017,
1575                     "Invalid status handle (0x%x).\n", sts->handle);
1576
1577                 if (IS_QLA82XX(ha))
1578                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1579                 else
1580                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1581                 qla2xxx_wake_dpc(vha);
1582                 return;
1583         }
1584         cp = GET_CMD_SP(sp);
1585         if (cp == NULL) {
1586                 ql_dbg(ql_dbg_io, vha, 0x3018,
1587                     "Command already returned (0x%x/%p).\n",
1588                     sts->handle, sp);
1589
1590                 return;
1591         }
1592
1593         lscsi_status = scsi_status & STATUS_MASK;
1594
1595         fcport = sp->fcport;
1596
1597         ox_id = 0;
1598         sense_len = par_sense_len = rsp_info_len = resid_len =
1599             fw_resid_len = 0;
1600         if (IS_FWI2_CAPABLE(ha)) {
1601                 if (scsi_status & SS_SENSE_LEN_VALID)
1602                         sense_len = le32_to_cpu(sts24->sense_len);
1603                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1604                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1605                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1606                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1607                 if (comp_status == CS_DATA_UNDERRUN)
1608                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1609                 rsp_info = sts24->data;
1610                 sense_data = sts24->data;
1611                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1612                 ox_id = le16_to_cpu(sts24->ox_id);
1613                 par_sense_len = sizeof(sts24->data);
1614         } else {
1615                 if (scsi_status & SS_SENSE_LEN_VALID)
1616                         sense_len = le16_to_cpu(sts->req_sense_length);
1617                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1618                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1619                 resid_len = le32_to_cpu(sts->residual_length);
1620                 rsp_info = sts->rsp_info;
1621                 sense_data = sts->req_sense_data;
1622                 par_sense_len = sizeof(sts->req_sense_data);
1623         }
1624
1625         /* Check for any FCP transport errors. */
1626         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1627                 /* Sense data lies beyond any FCP RESPONSE data. */
1628                 if (IS_FWI2_CAPABLE(ha)) {
1629                         sense_data += rsp_info_len;
1630                         par_sense_len -= rsp_info_len;
1631                 }
1632                 if (rsp_info_len > 3 && rsp_info[3]) {
1633                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
1634                             "FCP I/O protocol failure (0x%x/0x%x).\n",
1635                             rsp_info_len, rsp_info[3]);
1636
1637                         res = DID_BUS_BUSY << 16;
1638                         goto out;
1639                 }
1640         }
1641
1642         /* Check for overrun. */
1643         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1644             scsi_status & SS_RESIDUAL_OVER)
1645                 comp_status = CS_DATA_OVERRUN;
1646
1647         /*
1648          * Based on Host and scsi status generate status code for Linux
1649          */
1650         switch (comp_status) {
1651         case CS_COMPLETE:
1652         case CS_QUEUE_FULL:
1653                 if (scsi_status == 0) {
1654                         res = DID_OK << 16;
1655                         break;
1656                 }
1657                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1658                         resid = resid_len;
1659                         scsi_set_resid(cp, resid);
1660
1661                         if (!lscsi_status &&
1662                             ((unsigned)(scsi_bufflen(cp) - resid) <
1663                              cp->underflow)) {
1664                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
1665                                     "Mid-layer underflow "
1666                                     "detected (0x%x of 0x%x bytes).\n",
1667                                     resid, scsi_bufflen(cp));
1668
1669                                 res = DID_ERROR << 16;
1670                                 break;
1671                         }
1672                 }
1673                 res = DID_OK << 16 | lscsi_status;
1674
1675                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1676                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
1677                             "QUEUE FULL detected.\n");
1678                         break;
1679                 }
1680                 logit = 0;
1681                 if (lscsi_status != SS_CHECK_CONDITION)
1682                         break;
1683
1684                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1685                 if (!(scsi_status & SS_SENSE_LEN_VALID))
1686                         break;
1687
1688                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
1689                     rsp, res);
1690                 break;
1691
1692         case CS_DATA_UNDERRUN:
1693                 /* Use F/W calculated residual length. */
1694                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1695                 scsi_set_resid(cp, resid);
1696                 if (scsi_status & SS_RESIDUAL_UNDER) {
1697                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1698                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
1699                                     "Dropped frame(s) detected "
1700                                     "(0x%x of 0x%x bytes).\n",
1701                                     resid, scsi_bufflen(cp));
1702
1703                                 res = DID_ERROR << 16 | lscsi_status;
1704                                 goto check_scsi_status;
1705                         }
1706
1707                         if (!lscsi_status &&
1708                             ((unsigned)(scsi_bufflen(cp) - resid) <
1709                             cp->underflow)) {
1710                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
1711                                     "Mid-layer underflow "
1712                                     "detected (0x%x of 0x%x bytes).\n",
1713                                     resid, scsi_bufflen(cp));
1714
1715                                 res = DID_ERROR << 16;
1716                                 break;
1717                         }
1718                 } else {
1719                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
1720                             "Dropped frame(s) detected (0x%x "
1721                             "of 0x%x bytes).\n", resid, scsi_bufflen(cp));
1722
1723                         res = DID_ERROR << 16 | lscsi_status;
1724                         goto check_scsi_status;
1725                 }
1726
1727                 res = DID_OK << 16 | lscsi_status;
1728                 logit = 0;
1729
1730 check_scsi_status:
1731                 /*
1732                  * Check to see if SCSI Status is non zero. If so report SCSI
1733                  * Status.
1734                  */
1735                 if (lscsi_status != 0) {
1736                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1737                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
1738                                     "QUEUE FULL detected.\n");
1739                                 logit = 1;
1740                                 break;
1741                         }
1742                         if (lscsi_status != SS_CHECK_CONDITION)
1743                                 break;
1744
1745                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1746                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1747                                 break;
1748
1749                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
1750                             sense_len, rsp, res);
1751                 }
1752                 break;
1753
1754         case CS_PORT_LOGGED_OUT:
1755         case CS_PORT_CONFIG_CHG:
1756         case CS_PORT_BUSY:
1757         case CS_INCOMPLETE:
1758         case CS_PORT_UNAVAILABLE:
1759         case CS_TIMEOUT:
1760         case CS_RESET:
1761
1762                 /*
1763                  * We are going to have the fc class block the rport
1764                  * while we try to recover so instruct the mid layer
1765                  * to requeue until the class decides how to handle this.
1766                  */
1767                 res = DID_TRANSPORT_DISRUPTED << 16;
1768
1769                 if (comp_status == CS_TIMEOUT) {
1770                         if (IS_FWI2_CAPABLE(ha))
1771                                 break;
1772                         else if ((le16_to_cpu(sts->status_flags) &
1773                             SF_LOGOUT_SENT) == 0)
1774                                 break;
1775                 }
1776
1777                 ql_dbg(ql_dbg_io, fcport->vha, 0x3021,
1778                     "Port down status: port-state=0x%x.\n",
1779                     atomic_read(&fcport->state));
1780
1781                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1782                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1783                 break;
1784
1785         case CS_ABORTED:
1786                 res = DID_RESET << 16;
1787                 break;
1788
1789         case CS_DIF_ERROR:
1790                 logit = qla2x00_handle_dif_error(sp, sts24);
1791                 break;
1792         default:
1793                 res = DID_ERROR << 16;
1794                 break;
1795         }
1796
1797 out:
1798         if (logit)
1799                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
1800                     "FCP command status: 0x%x-0x%x (0x%x) "
1801                     "nexus=%ld:%d:%d portid=%02x%02x%02x oxid=0x%x "
1802                     "cdb=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x len=0x%x "
1803                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x.\n",
1804                     comp_status, scsi_status, res, vha->host_no,
1805                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
1806                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
1807                     cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1808                     cp->cmnd[4], cp->cmnd[5], cp->cmnd[6], cp->cmnd[7],
1809                     cp->cmnd[8], cp->cmnd[9], scsi_bufflen(cp), rsp_info_len,
1810                     resid_len, fw_resid_len);
1811
1812         if (rsp->status_srb == NULL)
1813                 sp->done(ha, sp, res);
1814 }
1815
1816 /**
1817  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1818  * @ha: SCSI driver HA context
1819  * @pkt: Entry pointer
1820  *
1821  * Extended sense data.
1822  */
1823 static void
1824 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1825 {
1826         uint8_t sense_sz = 0;
1827         struct qla_hw_data *ha = rsp->hw;
1828         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
1829         srb_t *sp = rsp->status_srb;
1830         struct scsi_cmnd *cp;
1831         uint32_t sense_len;
1832         uint8_t *sense_ptr;
1833
1834         if (!sp || !GET_CMD_SENSE_LEN(sp))
1835                 return;
1836
1837         sense_len = GET_CMD_SENSE_LEN(sp);
1838         sense_ptr = GET_CMD_SENSE_PTR(sp);
1839
1840         cp = GET_CMD_SP(sp);
1841         if (cp == NULL) {
1842                 ql_log(ql_log_warn, vha, 0x3025,
1843                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
1844
1845                 rsp->status_srb = NULL;
1846                 return;
1847         }
1848
1849         if (sense_len > sizeof(pkt->data))
1850                 sense_sz = sizeof(pkt->data);
1851         else
1852                 sense_sz = sense_len;
1853
1854         /* Move sense data. */
1855         if (IS_FWI2_CAPABLE(ha))
1856                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1857         memcpy(sense_ptr, pkt->data, sense_sz);
1858         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
1859                 sense_ptr, sense_sz);
1860
1861         sense_len -= sense_sz;
1862         sense_ptr += sense_sz;
1863
1864         SET_CMD_SENSE_PTR(sp, sense_ptr);
1865         SET_CMD_SENSE_LEN(sp, sense_len);
1866
1867         /* Place command on done queue. */
1868         if (sense_len == 0) {
1869                 rsp->status_srb = NULL;
1870                 sp->done(ha, sp, cp->result);
1871         }
1872 }
1873
1874 /**
1875  * qla2x00_error_entry() - Process an error entry.
1876  * @ha: SCSI driver HA context
1877  * @pkt: Entry pointer
1878  */
1879 static void
1880 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1881 {
1882         srb_t *sp;
1883         struct qla_hw_data *ha = vha->hw;
1884         const char func[] = "ERROR-IOCB";
1885         uint16_t que = MSW(pkt->handle);
1886         struct req_que *req = NULL;
1887         int res = DID_ERROR << 16;
1888
1889         ql_dbg(ql_dbg_async, vha, 0x502a,
1890             "type of error status in response: 0x%x\n", pkt->entry_status);
1891
1892         if (que >= ha->max_req_queues || !ha->req_q_map[que])
1893                 goto fatal;
1894
1895         req = ha->req_q_map[que];
1896
1897         if (pkt->entry_status & RF_BUSY)
1898                 res = DID_BUS_BUSY << 16;
1899
1900         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1901         if (sp) {
1902                 sp->done(ha, sp, res);
1903                 return;
1904         }
1905 fatal:
1906         ql_log(ql_log_warn, vha, 0x5030,
1907             "Error entry - invalid handle/queue.\n");
1908
1909         if (IS_QLA82XX(ha))
1910                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1911         else
1912                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1913         qla2xxx_wake_dpc(vha);
1914 }
1915
1916 /**
1917  * qla24xx_mbx_completion() - Process mailbox command completions.
1918  * @ha: SCSI driver HA context
1919  * @mb0: Mailbox0 register
1920  */
1921 static void
1922 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1923 {
1924         uint16_t        cnt;
1925         uint32_t        mboxes;
1926         uint16_t __iomem *wptr;
1927         struct qla_hw_data *ha = vha->hw;
1928         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1929
1930         /* Read all mbox registers? */
1931         mboxes = (1 << ha->mbx_count) - 1;
1932         if (!ha->mcp)
1933                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERRROR.\n");
1934         else
1935                 mboxes = ha->mcp->in_mb;
1936
1937         /* Load return mailbox registers. */
1938         ha->flags.mbox_int = 1;
1939         ha->mailbox_out[0] = mb0;
1940         mboxes >>= 1;
1941         wptr = (uint16_t __iomem *)&reg->mailbox1;
1942
1943         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1944                 if (mboxes & BIT_0)
1945                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1946
1947                 mboxes >>= 1;
1948                 wptr++;
1949         }
1950 }
1951
1952 /**
1953  * qla24xx_process_response_queue() - Process response queue entries.
1954  * @ha: SCSI driver HA context
1955  */
1956 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1957         struct rsp_que *rsp)
1958 {
1959         struct sts_entry_24xx *pkt;
1960         struct qla_hw_data *ha = vha->hw;
1961
1962         if (!vha->flags.online)
1963                 return;
1964
1965         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1966                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1967
1968                 rsp->ring_index++;
1969                 if (rsp->ring_index == rsp->length) {
1970                         rsp->ring_index = 0;
1971                         rsp->ring_ptr = rsp->ring;
1972                 } else {
1973                         rsp->ring_ptr++;
1974                 }
1975
1976                 if (pkt->entry_status != 0) {
1977                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1978                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1979                         wmb();
1980                         continue;
1981                 }
1982
1983                 switch (pkt->entry_type) {
1984                 case STATUS_TYPE:
1985                         qla2x00_status_entry(vha, rsp, pkt);
1986                         break;
1987                 case STATUS_CONT_TYPE:
1988                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1989                         break;
1990                 case VP_RPT_ID_IOCB_TYPE:
1991                         qla24xx_report_id_acquisition(vha,
1992                             (struct vp_rpt_id_entry_24xx *)pkt);
1993                         break;
1994                 case LOGINOUT_PORT_IOCB_TYPE:
1995                         qla24xx_logio_entry(vha, rsp->req,
1996                             (struct logio_entry_24xx *)pkt);
1997                         break;
1998                 case TSK_MGMT_IOCB_TYPE:
1999                         qla24xx_tm_iocb_entry(vha, rsp->req,
2000                             (struct tsk_mgmt_entry *)pkt);
2001                         break;
2002                 case CT_IOCB_TYPE:
2003                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2004                         break;
2005                 case ELS_IOCB_TYPE:
2006                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2007                         break;
2008                 case MARKER_TYPE:
2009                         /* Do nothing in this case, this check is to prevent it
2010                          * from falling into default case
2011                          */
2012                         break;
2013                 default:
2014                         /* Type Not Supported. */
2015                         ql_dbg(ql_dbg_async, vha, 0x5042,
2016                             "Received unknown response pkt type %x "
2017                             "entry status=%x.\n",
2018                             pkt->entry_type, pkt->entry_status);
2019                         break;
2020                 }
2021                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2022                 wmb();
2023         }
2024
2025         /* Adjust ring index */
2026         if (IS_QLA82XX(ha)) {
2027                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2028                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2029         } else
2030                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2031 }
2032
2033 static void
2034 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2035 {
2036         int rval;
2037         uint32_t cnt;
2038         struct qla_hw_data *ha = vha->hw;
2039         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2040
2041         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha))
2042                 return;
2043
2044         rval = QLA_SUCCESS;
2045         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2046         RD_REG_DWORD(&reg->iobase_addr);
2047         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2048         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2049             rval == QLA_SUCCESS; cnt--) {
2050                 if (cnt) {
2051                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2052                         udelay(10);
2053                 } else
2054                         rval = QLA_FUNCTION_TIMEOUT;
2055         }
2056         if (rval == QLA_SUCCESS)
2057                 goto next_test;
2058
2059         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2060         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2061             rval == QLA_SUCCESS; cnt--) {
2062                 if (cnt) {
2063                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2064                         udelay(10);
2065                 } else
2066                         rval = QLA_FUNCTION_TIMEOUT;
2067         }
2068         if (rval != QLA_SUCCESS)
2069                 goto done;
2070
2071 next_test:
2072         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2073                 ql_log(ql_log_info, vha, 0x504c,
2074                     "Additional code -- 0x55AA.\n");
2075
2076 done:
2077         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2078         RD_REG_DWORD(&reg->iobase_window);
2079 }
2080
2081 /**
2082  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
2083  * @irq:
2084  * @dev_id: SCSI driver HA context
2085  *
2086  * Called by system whenever the host adapter generates an interrupt.
2087  *
2088  * Returns handled flag.
2089  */
2090 irqreturn_t
2091 qla24xx_intr_handler(int irq, void *dev_id)
2092 {
2093         scsi_qla_host_t *vha;
2094         struct qla_hw_data *ha;
2095         struct device_reg_24xx __iomem *reg;
2096         int             status;
2097         unsigned long   iter;
2098         uint32_t        stat;
2099         uint32_t        hccr;
2100         uint16_t        mb[4];
2101         struct rsp_que *rsp;
2102         unsigned long   flags;
2103
2104         rsp = (struct rsp_que *) dev_id;
2105         if (!rsp) {
2106                 ql_log(ql_log_info, NULL, 0x5059,
2107                     "%s: NULL response queue pointer.\n", __func__);
2108                 return IRQ_NONE;
2109         }
2110
2111         ha = rsp->hw;
2112         reg = &ha->iobase->isp24;
2113         status = 0;
2114
2115         if (unlikely(pci_channel_offline(ha->pdev)))
2116                 return IRQ_HANDLED;
2117
2118         spin_lock_irqsave(&ha->hardware_lock, flags);
2119         vha = pci_get_drvdata(ha->pdev);
2120         for (iter = 50; iter--; ) {
2121                 stat = RD_REG_DWORD(&reg->host_status);
2122                 if (stat & HSRX_RISC_PAUSED) {
2123                         if (unlikely(pci_channel_offline(ha->pdev)))
2124                                 break;
2125
2126                         hccr = RD_REG_DWORD(&reg->hccr);
2127
2128                         ql_log(ql_log_warn, vha, 0x504b,
2129                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2130                             hccr);
2131
2132                         qla2xxx_check_risc_status(vha);
2133
2134                         ha->isp_ops->fw_dump(vha, 1);
2135                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2136                         break;
2137                 } else if ((stat & HSRX_RISC_INT) == 0)
2138                         break;
2139
2140                 switch (stat & 0xff) {
2141                 case 0x1:
2142                 case 0x2:
2143                 case 0x10:
2144                 case 0x11:
2145                         qla24xx_mbx_completion(vha, MSW(stat));
2146                         status |= MBX_INTERRUPT;
2147
2148                         break;
2149                 case 0x12:
2150                         mb[0] = MSW(stat);
2151                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2152                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2153                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2154                         qla2x00_async_event(vha, rsp, mb);
2155                         break;
2156                 case 0x13:
2157                 case 0x14:
2158                         qla24xx_process_response_queue(vha, rsp);
2159                         break;
2160                 default:
2161                         ql_dbg(ql_dbg_async, vha, 0x504f,
2162                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
2163                         break;
2164                 }
2165                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2166                 RD_REG_DWORD_RELAXED(&reg->hccr);
2167         }
2168         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2169
2170         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2171             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2172                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2173                 complete(&ha->mbx_intr_comp);
2174         }
2175
2176         return IRQ_HANDLED;
2177 }
2178
2179 static irqreturn_t
2180 qla24xx_msix_rsp_q(int irq, void *dev_id)
2181 {
2182         struct qla_hw_data *ha;
2183         struct rsp_que *rsp;
2184         struct device_reg_24xx __iomem *reg;
2185         struct scsi_qla_host *vha;
2186         unsigned long flags;
2187
2188         rsp = (struct rsp_que *) dev_id;
2189         if (!rsp) {
2190                 ql_log(ql_log_info, NULL, 0x505a,
2191                     "%s: NULL response queue pointer.\n", __func__);
2192                 return IRQ_NONE;
2193         }
2194         ha = rsp->hw;
2195         reg = &ha->iobase->isp24;
2196
2197         spin_lock_irqsave(&ha->hardware_lock, flags);
2198
2199         vha = pci_get_drvdata(ha->pdev);
2200         qla24xx_process_response_queue(vha, rsp);
2201         if (!ha->flags.disable_msix_handshake) {
2202                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2203                 RD_REG_DWORD_RELAXED(&reg->hccr);
2204         }
2205         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2206
2207         return IRQ_HANDLED;
2208 }
2209
2210 static irqreturn_t
2211 qla25xx_msix_rsp_q(int irq, void *dev_id)
2212 {
2213         struct qla_hw_data *ha;
2214         struct rsp_que *rsp;
2215         struct device_reg_24xx __iomem *reg;
2216         unsigned long flags;
2217
2218         rsp = (struct rsp_que *) dev_id;
2219         if (!rsp) {
2220                 ql_log(ql_log_info, NULL, 0x505b,
2221                     "%s: NULL response queue pointer.\n", __func__);
2222                 return IRQ_NONE;
2223         }
2224         ha = rsp->hw;
2225
2226         /* Clear the interrupt, if enabled, for this response queue */
2227         if (!ha->flags.disable_msix_handshake) {
2228                 reg = &ha->iobase->isp24;
2229                 spin_lock_irqsave(&ha->hardware_lock, flags);
2230                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2231                 RD_REG_DWORD_RELAXED(&reg->hccr);
2232                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2233         }
2234         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2235
2236         return IRQ_HANDLED;
2237 }
2238
2239 static irqreturn_t
2240 qla24xx_msix_default(int irq, void *dev_id)
2241 {
2242         scsi_qla_host_t *vha;
2243         struct qla_hw_data *ha;
2244         struct rsp_que *rsp;
2245         struct device_reg_24xx __iomem *reg;
2246         int             status;
2247         uint32_t        stat;
2248         uint32_t        hccr;
2249         uint16_t        mb[4];
2250         unsigned long flags;
2251
2252         rsp = (struct rsp_que *) dev_id;
2253         if (!rsp) {
2254                 ql_log(ql_log_info, NULL, 0x505c,
2255                     "%s: NULL response queue pointer.\n", __func__);
2256                 return IRQ_NONE;
2257         }
2258         ha = rsp->hw;
2259         reg = &ha->iobase->isp24;
2260         status = 0;
2261
2262         spin_lock_irqsave(&ha->hardware_lock, flags);
2263         vha = pci_get_drvdata(ha->pdev);
2264         do {
2265                 stat = RD_REG_DWORD(&reg->host_status);
2266                 if (stat & HSRX_RISC_PAUSED) {
2267                         if (unlikely(pci_channel_offline(ha->pdev)))
2268                                 break;
2269
2270                         hccr = RD_REG_DWORD(&reg->hccr);
2271
2272                         ql_log(ql_log_info, vha, 0x5050,
2273                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2274                             hccr);
2275
2276                         qla2xxx_check_risc_status(vha);
2277
2278                         ha->isp_ops->fw_dump(vha, 1);
2279                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2280                         break;
2281                 } else if ((stat & HSRX_RISC_INT) == 0)
2282                         break;
2283
2284                 switch (stat & 0xff) {
2285                 case 0x1:
2286                 case 0x2:
2287                 case 0x10:
2288                 case 0x11:
2289                         qla24xx_mbx_completion(vha, MSW(stat));
2290                         status |= MBX_INTERRUPT;
2291
2292                         break;
2293                 case 0x12:
2294                         mb[0] = MSW(stat);
2295                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2296                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2297                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2298                         qla2x00_async_event(vha, rsp, mb);
2299                         break;
2300                 case 0x13:
2301                 case 0x14:
2302                         qla24xx_process_response_queue(vha, rsp);
2303                         break;
2304                 default:
2305                         ql_dbg(ql_dbg_async, vha, 0x5051,
2306                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
2307                         break;
2308                 }
2309                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2310         } while (0);
2311         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2312
2313         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2314             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2315                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2316                 complete(&ha->mbx_intr_comp);
2317         }
2318         return IRQ_HANDLED;
2319 }
2320
2321 /* Interrupt handling helpers. */
2322
2323 struct qla_init_msix_entry {
2324         const char *name;
2325         irq_handler_t handler;
2326 };
2327
2328 static struct qla_init_msix_entry msix_entries[3] = {
2329         { "qla2xxx (default)", qla24xx_msix_default },
2330         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2331         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2332 };
2333
2334 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2335         { "qla2xxx (default)", qla82xx_msix_default },
2336         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2337 };
2338
2339 static void
2340 qla24xx_disable_msix(struct qla_hw_data *ha)
2341 {
2342         int i;
2343         struct qla_msix_entry *qentry;
2344         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2345
2346         for (i = 0; i < ha->msix_count; i++) {
2347                 qentry = &ha->msix_entries[i];
2348                 if (qentry->have_irq)
2349                         free_irq(qentry->vector, qentry->rsp);
2350         }
2351         pci_disable_msix(ha->pdev);
2352         kfree(ha->msix_entries);
2353         ha->msix_entries = NULL;
2354         ha->flags.msix_enabled = 0;
2355         ql_dbg(ql_dbg_init, vha, 0x0042,
2356             "Disabled the MSI.\n");
2357 }
2358
2359 static int
2360 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2361 {
2362 #define MIN_MSIX_COUNT  2
2363         int i, ret;
2364         struct msix_entry *entries;
2365         struct qla_msix_entry *qentry;
2366         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2367
2368         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2369                         GFP_KERNEL);
2370         if (!entries) {
2371                 ql_log(ql_log_warn, vha, 0x00bc,
2372                     "Failed to allocate memory for msix_entry.\n");
2373                 return -ENOMEM;
2374         }
2375
2376         for (i = 0; i < ha->msix_count; i++)
2377                 entries[i].entry = i;
2378
2379         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2380         if (ret) {
2381                 if (ret < MIN_MSIX_COUNT)
2382                         goto msix_failed;
2383
2384                 ql_log(ql_log_warn, vha, 0x00c6,
2385                     "MSI-X: Failed to enable support "
2386                     "-- %d/%d\n Retry with %d vectors.\n",
2387                     ha->msix_count, ret, ret);
2388                 ha->msix_count = ret;
2389                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2390                 if (ret) {
2391 msix_failed:
2392                         ql_log(ql_log_fatal, vha, 0x00c7,
2393                             "MSI-X: Failed to enable support, "
2394                             "giving   up -- %d/%d.\n",
2395                             ha->msix_count, ret);
2396                         goto msix_out;
2397                 }
2398                 ha->max_rsp_queues = ha->msix_count - 1;
2399         }
2400         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2401                                 ha->msix_count, GFP_KERNEL);
2402         if (!ha->msix_entries) {
2403                 ql_log(ql_log_fatal, vha, 0x00c8,
2404                     "Failed to allocate memory for ha->msix_entries.\n");
2405                 ret = -ENOMEM;
2406                 goto msix_out;
2407         }
2408         ha->flags.msix_enabled = 1;
2409
2410         for (i = 0; i < ha->msix_count; i++) {
2411                 qentry = &ha->msix_entries[i];
2412                 qentry->vector = entries[i].vector;
2413                 qentry->entry = entries[i].entry;
2414                 qentry->have_irq = 0;
2415                 qentry->rsp = NULL;
2416         }
2417
2418         /* Enable MSI-X vectors for the base queue */
2419         for (i = 0; i < 2; i++) {
2420                 qentry = &ha->msix_entries[i];
2421                 if (IS_QLA82XX(ha)) {
2422                         ret = request_irq(qentry->vector,
2423                                 qla82xx_msix_entries[i].handler,
2424                                 0, qla82xx_msix_entries[i].name, rsp);
2425                 } else {
2426                         ret = request_irq(qentry->vector,
2427                                 msix_entries[i].handler,
2428                                 0, msix_entries[i].name, rsp);
2429                 }
2430                 if (ret) {
2431                         ql_log(ql_log_fatal, vha, 0x00cb,
2432                             "MSI-X: unable to register handler -- %x/%d.\n",
2433                             qentry->vector, ret);
2434                         qla24xx_disable_msix(ha);
2435                         ha->mqenable = 0;
2436                         goto msix_out;
2437                 }
2438                 qentry->have_irq = 1;
2439                 qentry->rsp = rsp;
2440                 rsp->msix = qentry;
2441         }
2442
2443         /* Enable MSI-X vector for response queue update for queue 0 */
2444         if (IS_QLA83XX(ha)) {
2445                 if (ha->msixbase && ha->mqiobase &&
2446                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2447                         ha->mqenable = 1;
2448         } else
2449                 if (ha->mqiobase
2450                     && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2451                         ha->mqenable = 1;
2452         ql_dbg(ql_dbg_multiq, vha, 0xc005,
2453             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2454             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2455         ql_dbg(ql_dbg_init, vha, 0x0055,
2456             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2457             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2458
2459 msix_out:
2460         kfree(entries);
2461         return ret;
2462 }
2463
2464 int
2465 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2466 {
2467         int ret;
2468         device_reg_t __iomem *reg = ha->iobase;
2469         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2470
2471         /* If possible, enable MSI-X. */
2472         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2473                 !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha))
2474                 goto skip_msi;
2475
2476         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2477                 (ha->pdev->subsystem_device == 0x7040 ||
2478                 ha->pdev->subsystem_device == 0x7041 ||
2479                 ha->pdev->subsystem_device == 0x1705)) {
2480                 ql_log(ql_log_warn, vha, 0x0034,
2481                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
2482                         ha->pdev->subsystem_vendor,
2483                         ha->pdev->subsystem_device);
2484                 goto skip_msi;
2485         }
2486
2487         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
2488                 ql_log(ql_log_warn, vha, 0x0035,
2489                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
2490                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
2491                 goto skip_msix;
2492         }
2493
2494         ret = qla24xx_enable_msix(ha, rsp);
2495         if (!ret) {
2496                 ql_dbg(ql_dbg_init, vha, 0x0036,
2497                     "MSI-X: Enabled (0x%X, 0x%X).\n",
2498                     ha->chip_revision, ha->fw_attributes);
2499                 goto clear_risc_ints;
2500         }
2501         ql_log(ql_log_info, vha, 0x0037,
2502             "MSI-X Falling back-to MSI mode -%d.\n", ret);
2503 skip_msix:
2504
2505         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2506             !IS_QLA8001(ha))
2507                 goto skip_msi;
2508
2509         ret = pci_enable_msi(ha->pdev);
2510         if (!ret) {
2511                 ql_dbg(ql_dbg_init, vha, 0x0038,
2512                     "MSI: Enabled.\n");
2513                 ha->flags.msi_enabled = 1;
2514         } else
2515                 ql_log(ql_log_warn, vha, 0x0039,
2516                     "MSI-X; Falling back-to INTa mode -- %d.\n", ret);
2517 skip_msi:
2518
2519         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2520             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2521             QLA2XXX_DRIVER_NAME, rsp);
2522         if (ret) {
2523                 ql_log(ql_log_warn, vha, 0x003a,
2524                     "Failed to reserve interrupt %d already in use.\n",
2525                     ha->pdev->irq);
2526                 goto fail;
2527         }
2528
2529 clear_risc_ints:
2530
2531         /*
2532          * FIXME: Noted that 8014s were being dropped during NK testing.
2533          * Timing deltas during MSI-X/INTa transitions?
2534          */
2535         if (IS_QLA81XX(ha) || IS_QLA82XX(ha) || IS_QLA83XX(ha))
2536                 goto fail;
2537         spin_lock_irq(&ha->hardware_lock);
2538         if (IS_FWI2_CAPABLE(ha)) {
2539                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2540                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2541         } else {
2542                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2543                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2544                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2545         }
2546         spin_unlock_irq(&ha->hardware_lock);
2547
2548 fail:
2549         return ret;
2550 }
2551
2552 void
2553 qla2x00_free_irqs(scsi_qla_host_t *vha)
2554 {
2555         struct qla_hw_data *ha = vha->hw;
2556         struct rsp_que *rsp = ha->rsp_q_map[0];
2557
2558         if (ha->flags.msix_enabled)
2559                 qla24xx_disable_msix(ha);
2560         else if (ha->flags.msi_enabled) {
2561                 free_irq(ha->pdev->irq, rsp);
2562                 pci_disable_msi(ha->pdev);
2563         } else
2564                 free_irq(ha->pdev->irq, rsp);
2565 }
2566
2567
2568 int qla25xx_request_irq(struct rsp_que *rsp)
2569 {
2570         struct qla_hw_data *ha = rsp->hw;
2571         struct qla_init_msix_entry *intr = &msix_entries[2];
2572         struct qla_msix_entry *msix = rsp->msix;
2573         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2574         int ret;
2575
2576         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2577         if (ret) {
2578                 ql_log(ql_log_fatal, vha, 0x00e6,
2579                     "MSI-X: Unable to register handler -- %x/%d.\n",
2580                     msix->vector, ret);
2581                 return ret;
2582         }
2583         msix->have_irq = 1;
2584         msix->rsp = rsp;
2585         return ret;
2586 }