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                 printk(KERN_INFO
  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                 printk(KERN_INFO
 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 Commucation %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", "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         uint8_t         rscn_queue_index;
 332         unsigned long   flags;
 333
 334         /* Setup to process RIO completion. */
 335         handle_cnt = 0;
 336         if (IS_QLA8XXX_TYPE(ha))
 337                 goto skip_rio;
 338         switch (mb[0]) {
 339         case MBA_SCSI_COMPLETION:
 340                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 341                 handle_cnt = 1;
 342                 break;
 343         case MBA_CMPLT_1_16BIT:
 344                 handles[0] = mb[1];
 345                 handle_cnt = 1;
 346                 mb[0] = MBA_SCSI_COMPLETION;
 347                 break;
 348         case MBA_CMPLT_2_16BIT:
 349                 handles[0] = mb[1];
 350                 handles[1] = mb[2];
 351                 handle_cnt = 2;
 352                 mb[0] = MBA_SCSI_COMPLETION;
 353                 break;
 354         case MBA_CMPLT_3_16BIT:
 355                 handles[0] = mb[1];
 356                 handles[1] = mb[2];
 357                 handles[2] = mb[3];
 358                 handle_cnt = 3;
 359                 mb[0] = MBA_SCSI_COMPLETION;
 360                 break;
 361         case MBA_CMPLT_4_16BIT:
 362                 handles[0] = mb[1];
 363                 handles[1] = mb[2];
 364                 handles[2] = mb[3];
 365                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 366                 handle_cnt = 4;
 367                 mb[0] = MBA_SCSI_COMPLETION;
 368                 break;
 369         case MBA_CMPLT_5_16BIT:
 370                 handles[0] = mb[1];
 371                 handles[1] = mb[2];
 372                 handles[2] = mb[3];
 373                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 374                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 375                 handle_cnt = 5;
 376                 mb[0] = MBA_SCSI_COMPLETION;
 377                 break;
 378         case MBA_CMPLT_2_32BIT:
 379                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 380                 handles[1] = le32_to_cpu(
 381                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 382                     RD_MAILBOX_REG(ha, reg, 6));
 383                 handle_cnt = 2;
 384                 mb[0] = MBA_SCSI_COMPLETION;
 385                 break;
 386         default:
 387                 break;
 388         }
 389 skip_rio:
 390         switch (mb[0]) {
 391         case MBA_SCSI_COMPLETION:       /* Fast Post */
 392                 if (!vha->flags.online)
 393                         break;
 394
 395                 for (cnt = 0; cnt < handle_cnt; cnt++)
 396                         qla2x00_process_completed_request(vha, rsp->req,
 397                                 handles[cnt]);
 398                 break;
 399
 400         case MBA_RESET:                 /* Reset */
 401                 ql_dbg(ql_dbg_async, vha, 0x5002,
 402                     "Asynchronous RESET.\n");
 403
 404                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 405                 break;
 406
 407         case MBA_SYSTEM_ERR:            /* System Error */
 408                 mbx = IS_QLA81XX(ha) ? 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                         } else {
 422                                 /* Check to see if MPI timeout occurred */
 423                                 if ((mbx & MBX_3) && (ha->flags.port0))
 424                                         set_bit(MPI_RESET_NEEDED,
 425                                             &vha->dpc_flags);
 426
 427                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 428                         }
 429                 } else if (mb[1] == 0) {
 430                         ql_log(ql_log_fatal, vha, 0x5005,
 431                             "Unrecoverable Hardware Error: adapter marked "
 432                             "OFFLINE!\n");
 433                         vha->flags.online = 0;
 434                 } else
 435                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 436                 break;
 437
 438         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 439                 ql_log(ql_log_warn, vha, 0x5006,
 440                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 441
 442                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 443                 break;
 444
 445         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 446                 ql_log(ql_log_warn, vha, 0x5007,
 447                     "ISP Response Transfer Error.\n");
 448
 449                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 450                 break;
 451
 452         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 453                 ql_dbg(ql_dbg_async, vha, 0x5008,
 454                     "Asynchronous WAKEUP_THRES.\n");
 455                 break;
 456
 457         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 458                 ql_dbg(ql_dbg_async, vha, 0x5009,
 459                     "LIP occurred (%x).\n", mb[1]);
 460
 461                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 462                         atomic_set(&vha->loop_state, LOOP_DOWN);
 463                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 464                         qla2x00_mark_all_devices_lost(vha, 1);
 465                 }
 466
 467                 if (vha->vp_idx) {
 468                         atomic_set(&vha->vp_state, VP_FAILED);
 469                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 470                 }
 471
 472                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 473                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 474
 475                 vha->flags.management_server_logged_in = 0;
 476                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 477                 break;
 478
 479         case MBA_LOOP_UP:               /* Loop Up Event */
 480                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 481                         link_speed = link_speeds[0];
 482                         ha->link_data_rate = PORT_SPEED_1GB;
 483                 } else {
 484                         link_speed = link_speeds[LS_UNKNOWN];
 485                         if (mb[1] < 5)
 486                                 link_speed = link_speeds[mb[1]];
 487                         else if (mb[1] == 0x13)
 488                                 link_speed = link_speeds[5];
 489                         ha->link_data_rate = mb[1];
 490                 }
 491
 492                 ql_dbg(ql_dbg_async, vha, 0x500a,
 493                     "LOOP UP detected (%s Gbps).\n", link_speed);
 494
 495                 vha->flags.management_server_logged_in = 0;
 496                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 497                 break;
 498
 499         case MBA_LOOP_DOWN:             /* Loop Down Event */
 500                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
 501                 mbx = IS_QLA82XX(ha) ? RD_REG_WORD(&reg82->mailbox_out[4]) : mbx;
 502                 ql_dbg(ql_dbg_async, vha, 0x500b,
 503                     "LOOP DOWN detected (%x %x %x %x).\n",
 504                     mb[1], mb[2], mb[3], mbx);
 505
 506                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 507                         atomic_set(&vha->loop_state, LOOP_DOWN);
 508                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 509                         vha->device_flags |= DFLG_NO_CABLE;
 510                         qla2x00_mark_all_devices_lost(vha, 1);
 511                 }
 512
 513                 if (vha->vp_idx) {
 514                         atomic_set(&vha->vp_state, VP_FAILED);
 515                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 516                 }
 517
 518                 vha->flags.management_server_logged_in = 0;
 519                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 520                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 521                 break;
 522
 523         case MBA_LIP_RESET:             /* LIP reset occurred */
 524                 ql_dbg(ql_dbg_async, vha, 0x500c,
 525                     "LIP reset occurred (%x).\n", mb[1]);
 526
 527                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 528                         atomic_set(&vha->loop_state, LOOP_DOWN);
 529                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 530                         qla2x00_mark_all_devices_lost(vha, 1);
 531                 }
 532
 533                 if (vha->vp_idx) {
 534                         atomic_set(&vha->vp_state, VP_FAILED);
 535                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 536                 }
 537
 538                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 539
 540                 ha->operating_mode = LOOP;
 541                 vha->flags.management_server_logged_in = 0;
 542                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 543                 break;
 544
 545         /* case MBA_DCBX_COMPLETE: */
 546         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 547                 if (IS_QLA2100(ha))
 548                         break;
 549
 550                 if (IS_QLA8XXX_TYPE(ha)) {
 551                         ql_dbg(ql_dbg_async, vha, 0x500d,
 552                             "DCBX Completed -- %04x %04x %04x.\n",
 553                             mb[1], mb[2], mb[3]);
 554                         if (ha->notify_dcbx_comp)
 555                                 complete(&ha->dcbx_comp);
 556
 557                 } else
 558                         ql_dbg(ql_dbg_async, vha, 0x500e,
 559                             "Asynchronous P2P MODE received.\n");
 560
 561                 /*
 562                  * Until there's a transition from loop down to loop up, treat
 563                  * this as loop down only.
 564                  */
 565                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 566                         atomic_set(&vha->loop_state, LOOP_DOWN);
 567                         if (!atomic_read(&vha->loop_down_timer))
 568                                 atomic_set(&vha->loop_down_timer,
 569                                     LOOP_DOWN_TIME);
 570                         qla2x00_mark_all_devices_lost(vha, 1);
 571                 }
 572
 573                 if (vha->vp_idx) {
 574                         atomic_set(&vha->vp_state, VP_FAILED);
 575                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 576                 }
 577
 578                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 579                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 580
 581                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 582                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 583
 584                 ha->flags.gpsc_supported = 1;
 585                 vha->flags.management_server_logged_in = 0;
 586                 break;
 587
 588         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 589                 if (IS_QLA2100(ha))
 590                         break;
 591
 592                 ql_dbg(ql_dbg_async, vha, 0x500f,
 593                     "Configuration change detected: value=%x.\n", mb[1]);
 594
 595                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 596                         atomic_set(&vha->loop_state, LOOP_DOWN);
 597                         if (!atomic_read(&vha->loop_down_timer))
 598                                 atomic_set(&vha->loop_down_timer,
 599                                     LOOP_DOWN_TIME);
 600                         qla2x00_mark_all_devices_lost(vha, 1);
 601                 }
 602
 603                 if (vha->vp_idx) {
 604                         atomic_set(&vha->vp_state, VP_FAILED);
 605                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 606                 }
 607
 608                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 609                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 610                 break;
 611
 612         case MBA_PORT_UPDATE:           /* Port database update */
 613                 /*
 614                  * Handle only global and vn-port update events
 615                  *
 616                  * Relevant inputs:
 617                  * mb[1] = N_Port handle of changed port
 618                  * OR 0xffff for global event
 619                  * mb[2] = New login state
 620                  * 7 = Port logged out
 621                  * mb[3] = LSB is vp_idx, 0xff = all vps
 622                  *
 623                  * Skip processing if:
 624                  *       Event is global, vp_idx is NOT all vps,
 625                  *           vp_idx does not match
 626                  *       Event is not global, vp_idx does not match
 627                  */
 628                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 629                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 630                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 631                         break;
 632
 633                 /* Global event -- port logout or port unavailable. */
 634                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 635                         ql_dbg(ql_dbg_async, vha, 0x5010,
 636                             "Port unavailable %04x %04x %04x.\n",
 637                             mb[1], mb[2], mb[3]);
 638
 639                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 640                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 641                                 atomic_set(&vha->loop_down_timer,
 642                                     LOOP_DOWN_TIME);
 643                                 vha->device_flags |= DFLG_NO_CABLE;
 644                                 qla2x00_mark_all_devices_lost(vha, 1);
 645                         }
 646
 647                         if (vha->vp_idx) {
 648                                 atomic_set(&vha->vp_state, VP_FAILED);
 649                                 fc_vport_set_state(vha->fc_vport,
 650                                     FC_VPORT_FAILED);
 651                                 qla2x00_mark_all_devices_lost(vha, 1);
 652                         }
 653
 654                         vha->flags.management_server_logged_in = 0;
 655                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 656                         break;
 657                 }
 658
 659                 /*
 660                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 661                  * event etc. earlier indicating loop is down) then process
 662                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 663                  */
 664                 atomic_set(&vha->loop_down_timer, 0);
 665                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 666                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 667                         ql_dbg(ql_dbg_async, vha, 0x5011,
 668                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
 669                             mb[1], mb[2], mb[3]);
 670                         break;
 671                 }
 672
 673                 ql_dbg(ql_dbg_async, vha, 0x5012,
 674                     "Port database changed %04x %04x %04x.\n",
 675                     mb[1], mb[2], mb[3]);
 676
 677                 /*
 678                  * Mark all devices as missing so we will login again.
 679                  */
 680                 atomic_set(&vha->loop_state, LOOP_UP);
 681
 682                 qla2x00_mark_all_devices_lost(vha, 1);
 683
 684                 vha->flags.rscn_queue_overflow = 1;
 685
 686                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 687                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 688                 break;
 689
 690         case MBA_RSCN_UPDATE:           /* State Change Registration */
 691                 /* Check if the Vport has issued a SCR */
 692                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 693                         break;
 694                 /* Only handle SCNs for our Vport index. */
 695                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 696                         break;
 697
 698                 ql_dbg(ql_dbg_async, vha, 0x5013,
 699                     "RSCN database changed -- %04x %04x %04x.\n",
 700                     mb[1], mb[2], mb[3]);
 701
 702                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 703                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 704                                 | vha->d_id.b.al_pa;
 705                 if (rscn_entry == host_pid) {
 706                         ql_dbg(ql_dbg_async, vha, 0x5014,
 707                             "Ignoring RSCN update to local host "
 708                             "port ID (%06x).\n", host_pid);
 709                         break;
 710                 }
 711
 712                 /* Ignore reserved bits from RSCN-payload. */
 713                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 714                 rscn_queue_index = vha->rscn_in_ptr + 1;
 715                 if (rscn_queue_index == MAX_RSCN_COUNT)
 716                         rscn_queue_index = 0;
 717                 if (rscn_queue_index != vha->rscn_out_ptr) {
 718                         vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
 719                         vha->rscn_in_ptr = rscn_queue_index;
 720                 } else {
 721                         vha->flags.rscn_queue_overflow = 1;
 722                 }
 723
 724                 atomic_set(&vha->loop_down_timer, 0);
 725                 vha->flags.management_server_logged_in = 0;
 726
 727                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 728                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 729                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 730                 break;
 731
 732         /* case MBA_RIO_RESPONSE: */
 733         case MBA_ZIO_RESPONSE:
 734                 ql_dbg(ql_dbg_async, vha, 0x5015,
 735                     "[R|Z]IO update completion.\n");
 736
 737                 if (IS_FWI2_CAPABLE(ha))
 738                         qla24xx_process_response_queue(vha, rsp);
 739                 else
 740                         qla2x00_process_response_queue(rsp);
 741                 break;
 742
 743         case MBA_DISCARD_RND_FRAME:
 744                 ql_dbg(ql_dbg_async, vha, 0x5016,
 745                     "Discard RND Frame -- %04x %04x %04x.\n",
 746                     mb[1], mb[2], mb[3]);
 747                 break;
 748
 749         case MBA_TRACE_NOTIFICATION:
 750                 ql_dbg(ql_dbg_async, vha, 0x5017,
 751                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
 752                 break;
 753
 754         case MBA_ISP84XX_ALERT:
 755                 ql_dbg(ql_dbg_async, vha, 0x5018,
 756                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
 757                     mb[1], mb[2], mb[3]);
 758
 759                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 760                 switch (mb[1]) {
 761                 case A84_PANIC_RECOVERY:
 762                         ql_log(ql_log_info, vha, 0x5019,
 763                             "Alert 84XX: panic recovery %04x %04x.\n",
 764                             mb[2], mb[3]);
 765                         break;
 766                 case A84_OP_LOGIN_COMPLETE:
 767                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 768                         ql_log(ql_log_info, vha, 0x501a,
 769                             "Alert 84XX: firmware version %x.\n",
 770                             ha->cs84xx->op_fw_version);
 771                         break;
 772                 case A84_DIAG_LOGIN_COMPLETE:
 773                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 774                         ql_log(ql_log_info, vha, 0x501b,
 775                             "Alert 84XX: diagnostic firmware version %x.\n",
 776                             ha->cs84xx->diag_fw_version);
 777                         break;
 778                 case A84_GOLD_LOGIN_COMPLETE:
 779                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 780                         ha->cs84xx->fw_update = 1;
 781                         ql_log(ql_log_info, vha, 0x501c,
 782                             "Alert 84XX: gold firmware version %x.\n",
 783                             ha->cs84xx->gold_fw_version);
 784                         break;
 785                 default:
 786                         ql_log(ql_log_warn, vha, 0x501d,
 787                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
 788                             mb[1], mb[2], mb[3]);
 789                 }
 790                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
 791                 break;
 792         case MBA_DCBX_START:
 793                 ql_dbg(ql_dbg_async, vha, 0x501e,
 794                     "DCBX Started -- %04x %04x %04x.\n",
 795                     mb[1], mb[2], mb[3]);
 796                 break;
 797         case MBA_DCBX_PARAM_UPDATE:
 798                 ql_dbg(ql_dbg_async, vha, 0x501f,
 799                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
 800                     mb[1], mb[2], mb[3]);
 801                 break;
 802         case MBA_FCF_CONF_ERR:
 803                 ql_dbg(ql_dbg_async, vha, 0x5020,
 804                     "FCF Configuration Error -- %04x %04x %04x.\n",
 805                     mb[1], mb[2], mb[3]);
 806                 break;
 807         case MBA_IDC_COMPLETE:
 808         case MBA_IDC_NOTIFY:
 809         case MBA_IDC_TIME_EXT:
 810                 qla81xx_idc_event(vha, mb[0], mb[1]);
 811                 break;
 812         }
 813
 814         if (!vha->vp_idx && ha->num_vhosts)
 815                 qla2x00_alert_all_vps(rsp, mb);
 816 }
 817
 818 /**
 819  * qla2x00_process_completed_request() - Process a Fast Post response.
 820  * @ha: SCSI driver HA context
 821  * @index: SRB index
 822  */
 823 static void
 824 qla2x00_process_completed_request(struct scsi_qla_host *vha,
 825                                 struct req_que *req, uint32_t index)
 826 {
 827         srb_t *sp;
 828         struct qla_hw_data *ha = vha->hw;
 829
 830         /* Validate handle. */
 831         if (index >= MAX_OUTSTANDING_COMMANDS) {
 832                 ql_log(ql_log_warn, vha, 0x3014,
 833                     "Invalid SCSI command index (%x).\n", index);
 834
 835                 if (IS_QLA82XX(ha))
 836                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 837                 else
 838                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 839                 return;
 840         }
 841
 842         sp = req->outstanding_cmds[index];
 843         if (sp) {
 844                 /* Free outstanding command slot. */
 845                 req->outstanding_cmds[index] = NULL;
 846
 847                 /* Save ISP completion status */
 848                 sp->cmd->result = DID_OK << 16;
 849                 qla2x00_sp_compl(ha, sp);
 850         } else {
 851                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
 852
 853                 if (IS_QLA82XX(ha))
 854                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 855                 else
 856                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 857         }
 858 }
 859
 860 static srb_t *
 861 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 862     struct req_que *req, void *iocb)
 863 {
 864         struct qla_hw_data *ha = vha->hw;
 865         sts_entry_t *pkt = iocb;
 866         srb_t *sp = NULL;
 867         uint16_t index;
 868
 869         index = LSW(pkt->handle);
 870         if (index >= MAX_OUTSTANDING_COMMANDS) {
 871                 ql_log(ql_log_warn, vha, 0x5031,
 872                     "Invalid command index (%x).\n", index);
 873                 if (IS_QLA82XX(ha))
 874                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 875                 else
 876                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 877                 goto done;
 878         }
 879         sp = req->outstanding_cmds[index];
 880         if (!sp) {
 881                 ql_log(ql_log_warn, vha, 0x5032,
 882                     "Invalid completion handle (%x) -- timed-out.\n", index);
 883                 return sp;
 884         }
 885         if (sp->handle != index) {
 886                 ql_log(ql_log_warn, vha, 0x5033,
 887                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
 888                 return NULL;
 889         }
 890
 891         req->outstanding_cmds[index] = NULL;
 892
 893 done:
 894         return sp;
 895 }
 896
 897 static void
 898 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
 899     struct mbx_entry *mbx)
 900 {
 901         const char func[] = "MBX-IOCB";
 902         const char *type;
 903         fc_port_t *fcport;
 904         srb_t *sp;
 905         struct srb_iocb *lio;
 906         struct srb_ctx *ctx;
 907         uint16_t *data;
 908         uint16_t status;
 909
 910         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
 911         if (!sp)
 912                 return;
 913
 914         ctx = sp->ctx;
 915         lio = ctx->u.iocb_cmd;
 916         type = ctx->name;
 917         fcport = sp->fcport;
 918         data = lio->u.logio.data;
 919
 920         data[0] = MBS_COMMAND_ERROR;
 921         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
 922             QLA_LOGIO_LOGIN_RETRIED : 0;
 923         if (mbx->entry_status) {
 924                 ql_dbg(ql_dbg_async, vha, 0x5043,
 925                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
 926                     "entry-status=%x status=%x state-flag=%x "
 927                     "status-flags=%x.\n", type, sp->handle,
 928                     fcport->d_id.b.domain, fcport->d_id.b.area,
 929                     fcport->d_id.b.al_pa, mbx->entry_status,
 930                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
 931                     le16_to_cpu(mbx->status_flags));
 932
 933                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
 934                     (uint8_t *)mbx, sizeof(*mbx));
 935
 936                 goto logio_done;
 937         }
 938
 939         status = le16_to_cpu(mbx->status);
 940         if (status == 0x30 && ctx->type == SRB_LOGIN_CMD &&
 941             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
 942                 status = 0;
 943         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
 944                 ql_dbg(ql_dbg_async, vha, 0x5045,
 945                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
 946                     type, sp->handle, fcport->d_id.b.domain,
 947                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
 948                     le16_to_cpu(mbx->mb1));
 949
 950                 data[0] = MBS_COMMAND_COMPLETE;
 951                 if (ctx->type == SRB_LOGIN_CMD) {
 952                         fcport->port_type = FCT_TARGET;
 953                         if (le16_to_cpu(mbx->mb1) & BIT_0)
 954                                 fcport->port_type = FCT_INITIATOR;
 955                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
 956                                 fcport->flags |= FCF_FCP2_DEVICE;
 957                 }
 958                 goto logio_done;
 959         }
 960
 961         data[0] = le16_to_cpu(mbx->mb0);
 962         switch (data[0]) {
 963         case MBS_PORT_ID_USED:
 964                 data[1] = le16_to_cpu(mbx->mb1);
 965                 break;
 966         case MBS_LOOP_ID_USED:
 967                 break;
 968         default:
 969                 data[0] = MBS_COMMAND_ERROR;
 970                 break;
 971         }
 972
 973         ql_log(ql_log_warn, vha, 0x5046,
 974             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
 975             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
 976             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
 977             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
 978             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
 979             le16_to_cpu(mbx->mb7));
 980
 981 logio_done:
 982         lio->done(sp);
 983 }
 984
 985 static void
 986 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
 987     sts_entry_t *pkt, int iocb_type)
 988 {
 989         const char func[] = "CT_IOCB";
 990         const char *type;
 991         struct qla_hw_data *ha = vha->hw;
 992         srb_t *sp;
 993         struct srb_ctx *sp_bsg;
 994         struct fc_bsg_job *bsg_job;
 995         uint16_t comp_status;
 996
 997         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
 998         if (!sp)
 999                 return;
1000
1001         sp_bsg = sp->ctx;
1002         bsg_job = sp_bsg->u.bsg_job;
1003
1004         type = NULL;
1005         switch (sp_bsg->type) {
1006         case SRB_CT_CMD:
1007                 type = "ct pass-through";
1008                 break;
1009         default:
1010                 ql_log(ql_log_warn, vha, 0x5047,
1011                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp_bsg->type);
1012                 return;
1013         }
1014
1015         comp_status = le16_to_cpu(pkt->comp_status);
1016
1017         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1018          * fc payload  to the caller
1019          */
1020         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1021         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1022
1023         if (comp_status != CS_COMPLETE) {
1024                 if (comp_status == CS_DATA_UNDERRUN) {
1025                         bsg_job->reply->result = DID_OK << 16;
1026                         bsg_job->reply->reply_payload_rcv_len =
1027                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1028
1029                         ql_log(ql_log_warn, vha, 0x5048,
1030                             "CT pass-through-%s error "
1031                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1032                             type, comp_status,
1033                             bsg_job->reply->reply_payload_rcv_len);
1034                 } else {
1035                         ql_log(ql_log_warn, vha, 0x5049,
1036                             "CT pass-through-%s error "
1037                             "comp_status-status=0x%x.\n", type, comp_status);
1038                         bsg_job->reply->result = DID_ERROR << 16;
1039                         bsg_job->reply->reply_payload_rcv_len = 0;
1040                 }
1041                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1042                     (uint8_t *)pkt, sizeof(*pkt));
1043         } else {
1044                 bsg_job->reply->result =  DID_OK << 16;
1045                 bsg_job->reply->reply_payload_rcv_len =
1046                     bsg_job->reply_payload.payload_len;
1047                 bsg_job->reply_len = 0;
1048         }
1049
1050         dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
1051             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1052
1053         dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
1054             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1055
1056         if (sp_bsg->type == SRB_ELS_CMD_HST || sp_bsg->type == SRB_CT_CMD)
1057                 kfree(sp->fcport);
1058
1059         kfree(sp->ctx);
1060         mempool_free(sp, ha->srb_mempool);
1061         bsg_job->job_done(bsg_job);
1062 }
1063
1064 static void
1065 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1066     struct sts_entry_24xx *pkt, int iocb_type)
1067 {
1068         const char func[] = "ELS_CT_IOCB";
1069         const char *type;
1070         struct qla_hw_data *ha = vha->hw;
1071         srb_t *sp;
1072         struct srb_ctx *sp_bsg;
1073         struct fc_bsg_job *bsg_job;
1074         uint16_t comp_status;
1075         uint32_t fw_status[3];
1076         uint8_t* fw_sts_ptr;
1077
1078         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1079         if (!sp)
1080                 return;
1081         sp_bsg = sp->ctx;
1082         bsg_job = sp_bsg->u.bsg_job;
1083
1084         type = NULL;
1085         switch (sp_bsg->type) {
1086         case SRB_ELS_CMD_RPT:
1087         case SRB_ELS_CMD_HST:
1088                 type = "els";
1089                 break;
1090         case SRB_CT_CMD:
1091                 type = "ct pass-through";
1092                 break;
1093         default:
1094                 ql_log(ql_log_warn, vha, 0x503e,
1095                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp_bsg->type);
1096                 return;
1097         }
1098
1099         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1100         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1101         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1102
1103         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1104          * fc payload  to the caller
1105          */
1106         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1107         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1108
1109         if (comp_status != CS_COMPLETE) {
1110                 if (comp_status == CS_DATA_UNDERRUN) {
1111                         bsg_job->reply->result = DID_OK << 16;
1112                         bsg_job->reply->reply_payload_rcv_len =
1113                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
1114
1115                         ql_log(ql_log_info, vha, 0x503f,
1116                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1117                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1118                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1119                             le16_to_cpu(((struct els_sts_entry_24xx *)
1120                                 pkt)->total_byte_count));
1121                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1122                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1123                 }
1124                 else {
1125                         ql_log(ql_log_info, vha, 0x5040,
1126                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1127                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1128                             type, sp->handle, comp_status,
1129                             le16_to_cpu(((struct els_sts_entry_24xx *)
1130                                 pkt)->error_subcode_1),
1131                             le16_to_cpu(((struct els_sts_entry_24xx *)
1132                                     pkt)->error_subcode_2));
1133                         bsg_job->reply->result = DID_ERROR << 16;
1134                         bsg_job->reply->reply_payload_rcv_len = 0;
1135                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1136                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1137                 }
1138                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5056,
1139                                 (uint8_t *)pkt, sizeof(*pkt));
1140         }
1141         else {
1142                 bsg_job->reply->result =  DID_OK << 16;
1143                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1144                 bsg_job->reply_len = 0;
1145         }
1146
1147         dma_unmap_sg(&ha->pdev->dev,
1148             bsg_job->request_payload.sg_list,
1149             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1150         dma_unmap_sg(&ha->pdev->dev,
1151             bsg_job->reply_payload.sg_list,
1152             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1153         if ((sp_bsg->type == SRB_ELS_CMD_HST) ||
1154             (sp_bsg->type == SRB_CT_CMD))
1155                 kfree(sp->fcport);
1156         kfree(sp->ctx);
1157         mempool_free(sp, ha->srb_mempool);
1158         bsg_job->job_done(bsg_job);
1159 }
1160
1161 static void
1162 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1163     struct logio_entry_24xx *logio)
1164 {
1165         const char func[] = "LOGIO-IOCB";
1166         const char *type;
1167         fc_port_t *fcport;
1168         srb_t *sp;
1169         struct srb_iocb *lio;
1170         struct srb_ctx *ctx;
1171         uint16_t *data;
1172         uint32_t iop[2];
1173
1174         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1175         if (!sp)
1176                 return;
1177
1178         ctx = sp->ctx;
1179         lio = ctx->u.iocb_cmd;
1180         type = ctx->name;
1181         fcport = sp->fcport;
1182         data = lio->u.logio.data;
1183
1184         data[0] = MBS_COMMAND_ERROR;
1185         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1186                 QLA_LOGIO_LOGIN_RETRIED : 0;
1187         if (logio->entry_status) {
1188                 ql_log(ql_log_warn, vha, 0x5034,
1189                     "Async-%s error entry - hdl=%x"
1190                     "portid=%02x%02x%02x entry-status=%x.\n",
1191                     type, sp->handle, fcport->d_id.b.domain,
1192                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1193                     logio->entry_status);
1194                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1195                     (uint8_t *)logio, sizeof(*logio));
1196
1197                 goto logio_done;
1198         }
1199
1200         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1201                 ql_dbg(ql_dbg_async, vha, 0x5036,
1202                     "Async-%s complete - hdl=%x portid=%02x%02x%02x "
1203                     "iop0=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1204                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1205                     le32_to_cpu(logio->io_parameter[0]));
1206
1207                 data[0] = MBS_COMMAND_COMPLETE;
1208                 if (ctx->type != SRB_LOGIN_CMD)
1209                         goto logio_done;
1210
1211                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1212                 if (iop[0] & BIT_4) {
1213                         fcport->port_type = FCT_TARGET;
1214                         if (iop[0] & BIT_8)
1215                                 fcport->flags |= FCF_FCP2_DEVICE;
1216                 } else if (iop[0] & BIT_5)
1217                         fcport->port_type = FCT_INITIATOR;
1218
1219                 if (logio->io_parameter[7] || logio->io_parameter[8])
1220                         fcport->supported_classes |= FC_COS_CLASS2;
1221                 if (logio->io_parameter[9] || logio->io_parameter[10])
1222                         fcport->supported_classes |= FC_COS_CLASS3;
1223
1224                 goto logio_done;
1225         }
1226
1227         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1228         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1229         switch (iop[0]) {
1230         case LSC_SCODE_PORTID_USED:
1231                 data[0] = MBS_PORT_ID_USED;
1232                 data[1] = LSW(iop[1]);
1233                 break;
1234         case LSC_SCODE_NPORT_USED:
1235                 data[0] = MBS_LOOP_ID_USED;
1236                 break;
1237         default:
1238                 data[0] = MBS_COMMAND_ERROR;
1239                 break;
1240         }
1241
1242         ql_dbg(ql_dbg_async, vha, 0x5037,
1243             "Async-%s failed - hdl=%x portid=%02x%02x%02x comp=%x "
1244             "iop0=%x iop1=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1245             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1246             le16_to_cpu(logio->comp_status),
1247             le32_to_cpu(logio->io_parameter[0]),
1248             le32_to_cpu(logio->io_parameter[1]));
1249
1250 logio_done:
1251         lio->done(sp);
1252 }
1253
1254 static void
1255 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1256     struct tsk_mgmt_entry *tsk)
1257 {
1258         const char func[] = "TMF-IOCB";
1259         const char *type;
1260         fc_port_t *fcport;
1261         srb_t *sp;
1262         struct srb_iocb *iocb;
1263         struct srb_ctx *ctx;
1264         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1265         int error = 1;
1266
1267         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1268         if (!sp)
1269                 return;
1270
1271         ctx = sp->ctx;
1272         iocb = ctx->u.iocb_cmd;
1273         type = ctx->name;
1274         fcport = sp->fcport;
1275
1276         if (sts->entry_status) {
1277                 ql_log(ql_log_warn, vha, 0x5038,
1278                     "Async-%s error - hdl=%x entry-status(%x).\n",
1279                     type, sp->handle, sts->entry_status);
1280         } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1281                 ql_log(ql_log_warn, vha, 0x5039,
1282                     "Async-%s error - hdl=%x completion status(%x).\n",
1283                     type, sp->handle, sts->comp_status);
1284         } else if (!(le16_to_cpu(sts->scsi_status) &
1285             SS_RESPONSE_INFO_LEN_VALID)) {
1286                 ql_log(ql_log_warn, vha, 0x503a,
1287                     "Async-%s error - hdl=%x no response info(%x).\n",
1288                     type, sp->handle, sts->scsi_status);
1289         } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1290                 ql_log(ql_log_warn, vha, 0x503b,
1291                     "Async-%s error - hdl=%x not enough response(%d).\n",
1292                     type, sp->handle, sts->rsp_data_len);
1293         } else if (sts->data[3]) {
1294                 ql_log(ql_log_warn, vha, 0x503c,
1295                     "Async-%s error - hdl=%x response(%x).\n",
1296                     type, sp->handle, sts->data[3]);
1297         } else {
1298                 error = 0;
1299         }
1300
1301         if (error) {
1302                 iocb->u.tmf.data = error;
1303                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1304                     (uint8_t *)sts, sizeof(*sts));
1305         }
1306
1307         iocb->done(sp);
1308 }
1309
1310 /**
1311  * qla2x00_process_response_queue() - Process response queue entries.
1312  * @ha: SCSI driver HA context
1313  */
1314 void
1315 qla2x00_process_response_queue(struct rsp_que *rsp)
1316 {
1317         struct scsi_qla_host *vha;
1318         struct qla_hw_data *ha = rsp->hw;
1319         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1320         sts_entry_t     *pkt;
1321         uint16_t        handle_cnt;
1322         uint16_t        cnt;
1323
1324         vha = pci_get_drvdata(ha->pdev);
1325
1326         if (!vha->flags.online)
1327                 return;
1328
1329         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1330                 pkt = (sts_entry_t *)rsp->ring_ptr;
1331
1332                 rsp->ring_index++;
1333                 if (rsp->ring_index == rsp->length) {
1334                         rsp->ring_index = 0;
1335                         rsp->ring_ptr = rsp->ring;
1336                 } else {
1337                         rsp->ring_ptr++;
1338                 }
1339
1340                 if (pkt->entry_status != 0) {
1341                         qla2x00_error_entry(vha, rsp, pkt);
1342                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1343                         wmb();
1344                         continue;
1345                 }
1346
1347                 switch (pkt->entry_type) {
1348                 case STATUS_TYPE:
1349                         qla2x00_status_entry(vha, rsp, pkt);
1350                         break;
1351                 case STATUS_TYPE_21:
1352                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1353                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1354                                 qla2x00_process_completed_request(vha, rsp->req,
1355                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1356                         }
1357                         break;
1358                 case STATUS_TYPE_22:
1359                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1360                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1361                                 qla2x00_process_completed_request(vha, rsp->req,
1362                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1363                         }
1364                         break;
1365                 case STATUS_CONT_TYPE:
1366                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1367                         break;
1368                 case MBX_IOCB_TYPE:
1369                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1370                             (struct mbx_entry *)pkt);
1371                         break;
1372                 case CT_IOCB_TYPE:
1373                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1374                         break;
1375                 default:
1376                         /* Type Not Supported. */
1377                         ql_log(ql_log_warn, vha, 0x504a,
1378                             "Received unknown response pkt type %x "
1379                             "entry status=%x.\n",
1380                             pkt->entry_type, pkt->entry_status);
1381                         break;
1382                 }
1383                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1384                 wmb();
1385         }
1386
1387         /* Adjust ring index */
1388         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1389 }
1390
1391 static inline void
1392 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1393     uint32_t sense_len, struct rsp_que *rsp)
1394 {
1395         struct scsi_qla_host *vha = sp->fcport->vha;
1396         struct scsi_cmnd *cp = sp->cmd;
1397
1398         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1399                 sense_len = SCSI_SENSE_BUFFERSIZE;
1400
1401         sp->request_sense_length = sense_len;
1402         sp->request_sense_ptr = cp->sense_buffer;
1403         if (sp->request_sense_length > par_sense_len)
1404                 sense_len = par_sense_len;
1405
1406         memcpy(cp->sense_buffer, sense_data, sense_len);
1407
1408         sp->request_sense_ptr += sense_len;
1409         sp->request_sense_length -= sense_len;
1410         if (sp->request_sense_length != 0)
1411                 rsp->status_srb = sp;
1412
1413         if (sense_len) {
1414                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
1415                     "Check condition Sense data, nexus%ld:%d:%d cmd=%p.\n",
1416                     sp->fcport->vha->host_no, cp->device->id, cp->device->lun,
1417                     cp);
1418                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
1419                     cp->sense_buffer, sense_len);
1420         }
1421 }
1422
1423 struct scsi_dif_tuple {
1424         __be16 guard;       /* Checksum */
1425         __be16 app_tag;         /* APPL identifer */
1426         __be32 ref_tag;         /* Target LBA or indirect LBA */
1427 };
1428
1429 /*
1430  * Checks the guard or meta-data for the type of error
1431  * detected by the HBA. In case of errors, we set the
1432  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1433  * to indicate to the kernel that the HBA detected error.
1434  */
1435 static inline int
1436 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1437 {
1438         struct scsi_qla_host *vha = sp->fcport->vha;
1439         struct scsi_cmnd *cmd = sp->cmd;
1440         uint8_t         *ap = &sts24->data[12];
1441         uint8_t         *ep = &sts24->data[20];
1442         uint32_t        e_ref_tag, a_ref_tag;
1443         uint16_t        e_app_tag, a_app_tag;
1444         uint16_t        e_guard, a_guard;
1445
1446         /*
1447          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
1448          * would make guard field appear at offset 2
1449          */
1450         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
1451         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
1452         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
1453         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
1454         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
1455         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
1456
1457         ql_dbg(ql_dbg_io, vha, 0x3023,
1458             "iocb(s) %p Returned STATUS.\n", sts24);
1459
1460         ql_dbg(ql_dbg_io, vha, 0x3024,
1461             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1462             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1463             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
1464             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1465             a_app_tag, e_app_tag, a_guard, e_guard);
1466
1467         /*
1468          * Ignore sector if:
1469          * For type     3: ref & app tag is all 'f's
1470          * For type 0,1,2: app tag is all 'f's
1471          */
1472         if ((a_app_tag == 0xffff) &&
1473             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
1474              (a_ref_tag == 0xffffffff))) {
1475                 uint32_t blocks_done, resid;
1476                 sector_t lba_s = scsi_get_lba(cmd);
1477
1478                 /* 2TB boundary case covered automatically with this */
1479                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
1480
1481                 resid = scsi_bufflen(cmd) - (blocks_done *
1482                     cmd->device->sector_size);
1483
1484                 scsi_set_resid(cmd, resid);
1485                 cmd->result = DID_OK << 16;
1486
1487                 /* Update protection tag */
1488                 if (scsi_prot_sg_count(cmd)) {
1489                         uint32_t i, j = 0, k = 0, num_ent;
1490                         struct scatterlist *sg;
1491                         struct sd_dif_tuple *spt;
1492
1493                         /* Patch the corresponding protection tags */
1494                         scsi_for_each_prot_sg(cmd, sg,
1495                             scsi_prot_sg_count(cmd), i) {
1496                                 num_ent = sg_dma_len(sg) / 8;
1497                                 if (k + num_ent < blocks_done) {
1498                                         k += num_ent;
1499                                         continue;
1500                                 }
1501                                 j = blocks_done - k - 1;
1502                                 k = blocks_done;
1503                                 break;
1504                         }
1505
1506                         if (k != blocks_done) {
1507                                 ql_log(ql_log_warn, vha, 0x302f,
1508                                     "unexpected tag values tag:lba=%x:%llx)\n",
1509                                     e_ref_tag, (unsigned long long)lba_s);
1510                                 return 1;
1511                         }
1512
1513                         spt = page_address(sg_page(sg)) + sg->offset;
1514                         spt += j;
1515
1516                         spt->app_tag = 0xffff;
1517                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
1518                                 spt->ref_tag = 0xffffffff;
1519                 }
1520
1521                 return 0;
1522         }
1523
1524         /* check guard */
1525         if (e_guard != a_guard) {
1526                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1527                     0x10, 0x1);
1528                 set_driver_byte(cmd, DRIVER_SENSE);
1529                 set_host_byte(cmd, DID_ABORT);
1530                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1531                 return 1;
1532         }
1533
1534         /* check ref tag */
1535         if (e_ref_tag != a_ref_tag) {
1536                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1537                     0x10, 0x3);
1538                 set_driver_byte(cmd, DRIVER_SENSE);
1539                 set_host_byte(cmd, DID_ABORT);
1540                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1541                 return 1;
1542         }
1543
1544         /* check appl tag */
1545         if (e_app_tag != a_app_tag) {
1546                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1547                     0x10, 0x2);
1548                 set_driver_byte(cmd, DRIVER_SENSE);
1549                 set_host_byte(cmd, DID_ABORT);
1550                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1551                 return 1;
1552         }
1553
1554         return 1;
1555 }
1556
1557 /**
1558  * qla2x00_status_entry() - Process a Status IOCB entry.
1559  * @ha: SCSI driver HA context
1560  * @pkt: Entry pointer
1561  */
1562 static void
1563 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1564 {
1565         srb_t           *sp;
1566         fc_port_t       *fcport;
1567         struct scsi_cmnd *cp;
1568         sts_entry_t *sts;
1569         struct sts_entry_24xx *sts24;
1570         uint16_t        comp_status;
1571         uint16_t        scsi_status;
1572         uint16_t        ox_id;
1573         uint8_t         lscsi_status;
1574         int32_t         resid;
1575         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1576             fw_resid_len;
1577         uint8_t         *rsp_info, *sense_data;
1578         struct qla_hw_data *ha = vha->hw;
1579         uint32_t handle;
1580         uint16_t que;
1581         struct req_que *req;
1582         int logit = 1;
1583
1584         sts = (sts_entry_t *) pkt;
1585         sts24 = (struct sts_entry_24xx *) pkt;
1586         if (IS_FWI2_CAPABLE(ha)) {
1587                 comp_status = le16_to_cpu(sts24->comp_status);
1588                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1589         } else {
1590                 comp_status = le16_to_cpu(sts->comp_status);
1591                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1592         }
1593         handle = (uint32_t) LSW(sts->handle);
1594         que = MSW(sts->handle);
1595         req = ha->req_q_map[que];
1596
1597         /* Fast path completion. */
1598         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1599                 qla2x00_process_completed_request(vha, req, handle);
1600
1601                 return;
1602         }
1603
1604         /* Validate handle. */
1605         if (handle < MAX_OUTSTANDING_COMMANDS) {
1606                 sp = req->outstanding_cmds[handle];
1607                 req->outstanding_cmds[handle] = NULL;
1608         } else
1609                 sp = NULL;
1610
1611         if (sp == NULL) {
1612                 ql_dbg(ql_dbg_io, vha, 0x3017,
1613                     "Invalid status handle (0x%x).\n", sts->handle);
1614
1615                 if (IS_QLA82XX(ha))
1616                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1617                 else
1618                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1619                 qla2xxx_wake_dpc(vha);
1620                 return;
1621         }
1622         cp = sp->cmd;
1623         if (cp == NULL) {
1624                 ql_dbg(ql_dbg_io, vha, 0x3018,
1625                     "Command already returned (0x%x/%p).\n",
1626                     sts->handle, sp);
1627
1628                 return;
1629         }
1630
1631         lscsi_status = scsi_status & STATUS_MASK;
1632
1633         fcport = sp->fcport;
1634
1635         ox_id = 0;
1636         sense_len = par_sense_len = rsp_info_len = resid_len =
1637             fw_resid_len = 0;
1638         if (IS_FWI2_CAPABLE(ha)) {
1639                 if (scsi_status & SS_SENSE_LEN_VALID)
1640                         sense_len = le32_to_cpu(sts24->sense_len);
1641                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1642                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1643                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1644                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1645                 if (comp_status == CS_DATA_UNDERRUN)
1646                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1647                 rsp_info = sts24->data;
1648                 sense_data = sts24->data;
1649                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1650                 ox_id = le16_to_cpu(sts24->ox_id);
1651                 par_sense_len = sizeof(sts24->data);
1652         } else {
1653                 if (scsi_status & SS_SENSE_LEN_VALID)
1654                         sense_len = le16_to_cpu(sts->req_sense_length);
1655                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1656                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1657                 resid_len = le32_to_cpu(sts->residual_length);
1658                 rsp_info = sts->rsp_info;
1659                 sense_data = sts->req_sense_data;
1660                 par_sense_len = sizeof(sts->req_sense_data);
1661         }
1662
1663         /* Check for any FCP transport errors. */
1664         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1665                 /* Sense data lies beyond any FCP RESPONSE data. */
1666                 if (IS_FWI2_CAPABLE(ha)) {
1667                         sense_data += rsp_info_len;
1668                         par_sense_len -= rsp_info_len;
1669                 }
1670                 if (rsp_info_len > 3 && rsp_info[3]) {
1671                         ql_dbg(ql_dbg_io, vha, 0x3019,
1672                             "FCP I/O protocol failure (0x%x/0x%x).\n",
1673                             rsp_info_len, rsp_info[3]);
1674
1675                         cp->result = DID_BUS_BUSY << 16;
1676                         goto out;
1677                 }
1678         }
1679
1680         /* Check for overrun. */
1681         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1682             scsi_status & SS_RESIDUAL_OVER)
1683                 comp_status = CS_DATA_OVERRUN;
1684
1685         /*
1686          * Based on Host and scsi status generate status code for Linux
1687          */
1688         switch (comp_status) {
1689         case CS_COMPLETE:
1690         case CS_QUEUE_FULL:
1691                 if (scsi_status == 0) {
1692                         cp->result = DID_OK << 16;
1693                         break;
1694                 }
1695                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1696                         resid = resid_len;
1697                         scsi_set_resid(cp, resid);
1698
1699                         if (!lscsi_status &&
1700                             ((unsigned)(scsi_bufflen(cp) - resid) <
1701                              cp->underflow)) {
1702                                 ql_dbg(ql_dbg_io, vha, 0x301a,
1703                                     "Mid-layer underflow "
1704                                     "detected (0x%x of 0x%x bytes).\n",
1705                                     resid, scsi_bufflen(cp));
1706
1707                                 cp->result = DID_ERROR << 16;
1708                                 break;
1709                         }
1710                 }
1711                 cp->result = DID_OK << 16 | lscsi_status;
1712
1713                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1714                         ql_dbg(ql_dbg_io, vha, 0x301b,
1715                             "QUEUE FULL detected.\n");
1716                         break;
1717                 }
1718                 logit = 0;
1719                 if (lscsi_status != SS_CHECK_CONDITION)
1720                         break;
1721
1722                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1723                 if (!(scsi_status & SS_SENSE_LEN_VALID))
1724                         break;
1725
1726                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
1727                     rsp);
1728                 break;
1729
1730         case CS_DATA_UNDERRUN:
1731                 /* Use F/W calculated residual length. */
1732                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1733                 scsi_set_resid(cp, resid);
1734                 if (scsi_status & SS_RESIDUAL_UNDER) {
1735                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1736                                 ql_dbg(ql_dbg_io, vha, 0x301d,
1737                                     "Dropped frame(s) detected "
1738                                     "(0x%x of 0x%x bytes).\n",
1739                                     resid, scsi_bufflen(cp));
1740
1741                                 cp->result = DID_ERROR << 16 | lscsi_status;
1742                                 goto check_scsi_status;
1743                         }
1744
1745                         if (!lscsi_status &&
1746                             ((unsigned)(scsi_bufflen(cp) - resid) <
1747                             cp->underflow)) {
1748                                 ql_dbg(ql_dbg_io, vha, 0x301e,
1749                                     "Mid-layer underflow "
1750                                     "detected (0x%x of 0x%x bytes).\n",
1751                                     resid, scsi_bufflen(cp));
1752
1753                                 cp->result = DID_ERROR << 16;
1754                                 break;
1755                         }
1756                 } else {
1757                         ql_dbg(ql_dbg_io, vha, 0x301f,
1758                             "Dropped frame(s) detected (0x%x "
1759                             "of 0x%x bytes).\n", resid, scsi_bufflen(cp));
1760
1761                         cp->result = DID_ERROR << 16 | lscsi_status;
1762                         goto check_scsi_status;
1763                 }
1764
1765                 cp->result = DID_OK << 16 | lscsi_status;
1766                 logit = 0;
1767
1768 check_scsi_status:
1769                 /*
1770                  * Check to see if SCSI Status is non zero. If so report SCSI
1771                  * Status.
1772                  */
1773                 if (lscsi_status != 0) {
1774                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1775                                 ql_dbg(ql_dbg_io, vha, 0x3020,
1776                                     "QUEUE FULL detected.\n");
1777                                 logit = 1;
1778                                 break;
1779                         }
1780                         if (lscsi_status != SS_CHECK_CONDITION)
1781                                 break;
1782
1783                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1784                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1785                                 break;
1786
1787                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
1788                             sense_len, rsp);
1789                 }
1790                 break;
1791
1792         case CS_PORT_LOGGED_OUT:
1793         case CS_PORT_CONFIG_CHG:
1794         case CS_PORT_BUSY:
1795         case CS_INCOMPLETE:
1796         case CS_PORT_UNAVAILABLE:
1797         case CS_TIMEOUT:
1798         case CS_RESET:
1799
1800                 /*
1801                  * We are going to have the fc class block the rport
1802                  * while we try to recover so instruct the mid layer
1803                  * to requeue until the class decides how to handle this.
1804                  */
1805                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1806
1807                 if (comp_status == CS_TIMEOUT) {
1808                         if (IS_FWI2_CAPABLE(ha))
1809                                 break;
1810                         else if ((le16_to_cpu(sts->status_flags) &
1811                             SF_LOGOUT_SENT) == 0)
1812                                 break;
1813                 }
1814
1815                 ql_dbg(ql_dbg_io, vha, 0x3021,
1816                     "Port down status: port-state=0x%x.\n",
1817                     atomic_read(&fcport->state));
1818
1819                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1820                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1821                 break;
1822
1823         case CS_ABORTED:
1824                 cp->result = DID_RESET << 16;
1825                 break;
1826
1827         case CS_DIF_ERROR:
1828                 logit = qla2x00_handle_dif_error(sp, sts24);
1829                 break;
1830         default:
1831                 cp->result = DID_ERROR << 16;
1832                 break;
1833         }
1834
1835 out:
1836         if (logit)
1837                 ql_dbg(ql_dbg_io, vha, 0x3022,
1838                     "FCP command status: 0x%x-0x%x (0x%x) "
1839                     "nexus=%ld:%d:%d portid=%02x%02x%02x oxid=0x%x "
1840                     "cdb=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x len=0x%x "
1841                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x.\n",
1842                     comp_status, scsi_status, cp->result, vha->host_no,
1843                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
1844                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
1845                     cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1846                     cp->cmnd[4], cp->cmnd[5], cp->cmnd[6], cp->cmnd[7],
1847                     cp->cmnd[8], cp->cmnd[9], scsi_bufflen(cp), rsp_info_len,
1848                     resid_len, fw_resid_len);
1849
1850         if (rsp->status_srb == NULL)
1851                 qla2x00_sp_compl(ha, sp);
1852 }
1853
1854 /**
1855  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1856  * @ha: SCSI driver HA context
1857  * @pkt: Entry pointer
1858  *
1859  * Extended sense data.
1860  */
1861 static void
1862 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1863 {
1864         uint8_t         sense_sz = 0;
1865         struct qla_hw_data *ha = rsp->hw;
1866         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
1867         srb_t           *sp = rsp->status_srb;
1868         struct scsi_cmnd *cp;
1869
1870         if (sp != NULL && sp->request_sense_length != 0) {
1871                 cp = sp->cmd;
1872                 if (cp == NULL) {
1873                         ql_log(ql_log_warn, vha, 0x3025,
1874                             "cmd is NULL: already returned to OS (sp=%p).\n",
1875                             sp);
1876
1877                         rsp->status_srb = NULL;
1878                         return;
1879                 }
1880
1881                 if (sp->request_sense_length > sizeof(pkt->data)) {
1882                         sense_sz = sizeof(pkt->data);
1883                 } else {
1884                         sense_sz = sp->request_sense_length;
1885                 }
1886
1887                 /* Move sense data. */
1888                 if (IS_FWI2_CAPABLE(ha))
1889                         host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1890                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1891                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
1892                         sp->request_sense_ptr, sense_sz);
1893
1894                 sp->request_sense_ptr += sense_sz;
1895                 sp->request_sense_length -= sense_sz;
1896
1897                 /* Place command on done queue. */
1898                 if (sp->request_sense_length == 0) {
1899                         rsp->status_srb = NULL;
1900                         qla2x00_sp_compl(ha, sp);
1901                 }
1902         }
1903 }
1904
1905 static int
1906 qla2x00_free_sp_ctx(scsi_qla_host_t *vha, srb_t *sp)
1907 {
1908         struct qla_hw_data *ha = vha->hw;
1909         struct srb_ctx *ctx;
1910
1911         if (!sp->ctx)
1912                 return 1;
1913
1914         ctx = sp->ctx;
1915
1916         if (ctx->type == SRB_LOGIN_CMD ||
1917             ctx->type == SRB_LOGOUT_CMD ||
1918             ctx->type == SRB_TM_CMD) {
1919                 ctx->u.iocb_cmd->done(sp);
1920                 return 0;
1921         } else if (ctx->type == SRB_ADISC_CMD) {
1922                 ctx->u.iocb_cmd->free(sp);
1923                 return 0;
1924         } else {
1925                 struct fc_bsg_job *bsg_job;
1926
1927                 bsg_job = ctx->u.bsg_job;
1928                 if (ctx->type == SRB_ELS_CMD_HST ||
1929                     ctx->type == SRB_CT_CMD)
1930                         kfree(sp->fcport);
1931
1932                 bsg_job->reply->reply_data.ctels_reply.status =
1933                     FC_CTELS_STATUS_OK;
1934                 bsg_job->reply->result = DID_ERROR << 16;
1935                 bsg_job->reply->reply_payload_rcv_len = 0;
1936                 kfree(sp->ctx);
1937                 mempool_free(sp, ha->srb_mempool);
1938                 bsg_job->job_done(bsg_job);
1939                 return 0;
1940         }
1941         return 1;
1942 }
1943
1944 /**
1945  * qla2x00_error_entry() - Process an error entry.
1946  * @ha: SCSI driver HA context
1947  * @pkt: Entry pointer
1948  */
1949 static void
1950 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1951 {
1952         srb_t *sp;
1953         struct qla_hw_data *ha = vha->hw;
1954         const char func[] = "ERROR-IOCB";
1955         uint16_t que = MSW(pkt->handle);
1956         struct req_que *req = ha->req_q_map[que];
1957
1958         if (pkt->entry_status & RF_INV_E_ORDER)
1959                 ql_dbg(ql_dbg_async, vha, 0x502a,
1960                     "Invalid Entry Order.\n");
1961         else if (pkt->entry_status & RF_INV_E_COUNT)
1962                 ql_dbg(ql_dbg_async, vha, 0x502b,
1963                     "Invalid Entry Count.\n");
1964         else if (pkt->entry_status & RF_INV_E_PARAM)
1965                 ql_dbg(ql_dbg_async, vha, 0x502c,
1966                     "Invalid Entry Parameter.\n");
1967         else if (pkt->entry_status & RF_INV_E_TYPE)
1968                 ql_dbg(ql_dbg_async, vha, 0x502d,
1969                     "Invalid Entry Type.\n");
1970         else if (pkt->entry_status & RF_BUSY)
1971                 ql_dbg(ql_dbg_async, vha, 0x502e,
1972                     "Busy.\n");
1973         else
1974                 ql_dbg(ql_dbg_async, vha, 0x502f,
1975                     "UNKNOWN flag error.\n");
1976
1977         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1978         if (sp) {
1979                 if (qla2x00_free_sp_ctx(vha, sp)) {
1980                         if (pkt->entry_status &
1981                             (RF_INV_E_ORDER | RF_INV_E_COUNT |
1982                              RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1983                                 sp->cmd->result = DID_ERROR << 16;
1984                         } else if (pkt->entry_status & RF_BUSY) {
1985                                 sp->cmd->result = DID_BUS_BUSY << 16;
1986                         } else {
1987                                 sp->cmd->result = DID_ERROR << 16;
1988                         }
1989                         qla2x00_sp_compl(ha, sp);
1990                 }
1991         } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1992                 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7
1993                 || pkt->entry_type == COMMAND_TYPE_6) {
1994                 ql_log(ql_log_warn, vha, 0x5030,
1995                     "Error entry - invalid handle.\n");
1996
1997                 if (IS_QLA82XX(ha))
1998                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1999                 else
2000                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2001                 qla2xxx_wake_dpc(vha);
2002         }
2003 }
2004
2005 /**
2006  * qla24xx_mbx_completion() - Process mailbox command completions.
2007  * @ha: SCSI driver HA context
2008  * @mb0: Mailbox0 register
2009  */
2010 static void
2011 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2012 {
2013         uint16_t        cnt;
2014         uint32_t        mboxes;
2015         uint16_t __iomem *wptr;
2016         struct qla_hw_data *ha = vha->hw;
2017         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2018
2019         /* Read all mbox registers? */
2020         mboxes = (1 << ha->mbx_count) - 1;
2021         if (!ha->mcp)
2022                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERRROR.\n");
2023         else
2024                 mboxes = ha->mcp->in_mb;
2025
2026         /* Load return mailbox registers. */
2027         ha->flags.mbox_int = 1;
2028         ha->mailbox_out[0] = mb0;
2029         mboxes >>= 1;
2030         wptr = (uint16_t __iomem *)&reg->mailbox1;
2031
2032         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2033                 if (mboxes & BIT_0)
2034                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2035
2036                 mboxes >>= 1;
2037                 wptr++;
2038         }
2039 }
2040
2041 /**
2042  * qla24xx_process_response_queue() - Process response queue entries.
2043  * @ha: SCSI driver HA context
2044  */
2045 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2046         struct rsp_que *rsp)
2047 {
2048         struct sts_entry_24xx *pkt;
2049         struct qla_hw_data *ha = vha->hw;
2050
2051         if (!vha->flags.online)
2052                 return;
2053
2054         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2055                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2056
2057                 rsp->ring_index++;
2058                 if (rsp->ring_index == rsp->length) {
2059                         rsp->ring_index = 0;
2060                         rsp->ring_ptr = rsp->ring;
2061                 } else {
2062                         rsp->ring_ptr++;
2063                 }
2064
2065                 if (pkt->entry_status != 0) {
2066                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
2067                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2068                         wmb();
2069                         continue;
2070                 }
2071
2072                 switch (pkt->entry_type) {
2073                 case STATUS_TYPE:
2074                         qla2x00_status_entry(vha, rsp, pkt);
2075                         break;
2076                 case STATUS_CONT_TYPE:
2077                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2078                         break;
2079                 case VP_RPT_ID_IOCB_TYPE:
2080                         qla24xx_report_id_acquisition(vha,
2081                             (struct vp_rpt_id_entry_24xx *)pkt);
2082                         break;
2083                 case LOGINOUT_PORT_IOCB_TYPE:
2084                         qla24xx_logio_entry(vha, rsp->req,
2085                             (struct logio_entry_24xx *)pkt);
2086                         break;
2087                 case TSK_MGMT_IOCB_TYPE:
2088                         qla24xx_tm_iocb_entry(vha, rsp->req,
2089                             (struct tsk_mgmt_entry *)pkt);
2090                         break;
2091                 case CT_IOCB_TYPE:
2092                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2093                         break;
2094                 case ELS_IOCB_TYPE:
2095                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2096                         break;
2097                 case MARKER_TYPE:
2098                         /* Do nothing in this case, this check is to prevent it
2099                          * from falling into default case
2100                          */
2101                         break;
2102                 default:
2103                         /* Type Not Supported. */
2104                         ql_dbg(ql_dbg_async, vha, 0x5042,
2105                             "Received unknown response pkt type %x "
2106                             "entry status=%x.\n",
2107                             pkt->entry_type, pkt->entry_status);
2108                         break;
2109                 }
2110                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2111                 wmb();
2112         }
2113
2114         /* Adjust ring index */
2115         if (IS_QLA82XX(ha)) {
2116                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2117                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2118         } else
2119                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2120 }
2121
2122 static void
2123 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2124 {
2125         int rval;
2126         uint32_t cnt;
2127         struct qla_hw_data *ha = vha->hw;
2128         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2129
2130         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
2131                 return;
2132
2133         rval = QLA_SUCCESS;
2134         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2135         RD_REG_DWORD(&reg->iobase_addr);
2136         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2137         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2138             rval == QLA_SUCCESS; cnt--) {
2139                 if (cnt) {
2140                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2141                         udelay(10);
2142                 } else
2143                         rval = QLA_FUNCTION_TIMEOUT;
2144         }
2145         if (rval == QLA_SUCCESS)
2146                 goto next_test;
2147
2148         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2149         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2150             rval == QLA_SUCCESS; cnt--) {
2151                 if (cnt) {
2152                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2153                         udelay(10);
2154                 } else
2155                         rval = QLA_FUNCTION_TIMEOUT;
2156         }
2157         if (rval != QLA_SUCCESS)
2158                 goto done;
2159
2160 next_test:
2161         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2162                 ql_log(ql_log_info, vha, 0x504c,
2163                     "Additional code -- 0x55AA.\n");
2164
2165 done:
2166         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2167         RD_REG_DWORD(&reg->iobase_window);
2168 }
2169
2170 /**
2171  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
2172  * @irq:
2173  * @dev_id: SCSI driver HA context
2174  *
2175  * Called by system whenever the host adapter generates an interrupt.
2176  *
2177  * Returns handled flag.
2178  */
2179 irqreturn_t
2180 qla24xx_intr_handler(int irq, void *dev_id)
2181 {
2182         scsi_qla_host_t *vha;
2183         struct qla_hw_data *ha;
2184         struct device_reg_24xx __iomem *reg;
2185         int             status;
2186         unsigned long   iter;
2187         uint32_t        stat;
2188         uint32_t        hccr;
2189         uint16_t        mb[4];
2190         struct rsp_que *rsp;
2191         unsigned long   flags;
2192
2193         rsp = (struct rsp_que *) dev_id;
2194         if (!rsp) {
2195                 printk(KERN_INFO
2196                     "%s(): NULL response queue pointer.\n", __func__);
2197                 return IRQ_NONE;
2198         }
2199
2200         ha = rsp->hw;
2201         reg = &ha->iobase->isp24;
2202         status = 0;
2203
2204         if (unlikely(pci_channel_offline(ha->pdev)))
2205                 return IRQ_HANDLED;
2206
2207         spin_lock_irqsave(&ha->hardware_lock, flags);
2208         vha = pci_get_drvdata(ha->pdev);
2209         for (iter = 50; iter--; ) {
2210                 stat = RD_REG_DWORD(&reg->host_status);
2211                 if (stat & HSRX_RISC_PAUSED) {
2212                         if (unlikely(pci_channel_offline(ha->pdev)))
2213                                 break;
2214
2215                         hccr = RD_REG_DWORD(&reg->hccr);
2216
2217                         ql_log(ql_log_warn, vha, 0x504b,
2218                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2219                             hccr);
2220
2221                         qla2xxx_check_risc_status(vha);
2222
2223                         ha->isp_ops->fw_dump(vha, 1);
2224                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2225                         break;
2226                 } else if ((stat & HSRX_RISC_INT) == 0)
2227                         break;
2228
2229                 switch (stat & 0xff) {
2230                 case 0x1:
2231                 case 0x2:
2232                 case 0x10:
2233                 case 0x11:
2234                         qla24xx_mbx_completion(vha, MSW(stat));
2235                         status |= MBX_INTERRUPT;
2236
2237                         break;
2238                 case 0x12:
2239                         mb[0] = MSW(stat);
2240                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2241                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2242                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2243                         qla2x00_async_event(vha, rsp, mb);
2244                         break;
2245                 case 0x13:
2246                 case 0x14:
2247                         qla24xx_process_response_queue(vha, rsp);
2248                         break;
2249                 default:
2250                         ql_dbg(ql_dbg_async, vha, 0x504f,
2251                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
2252                         break;
2253                 }
2254                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2255                 RD_REG_DWORD_RELAXED(&reg->hccr);
2256         }
2257         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2258
2259         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2260             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2261                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2262                 complete(&ha->mbx_intr_comp);
2263         }
2264
2265         return IRQ_HANDLED;
2266 }
2267
2268 static irqreturn_t
2269 qla24xx_msix_rsp_q(int irq, void *dev_id)
2270 {
2271         struct qla_hw_data *ha;
2272         struct rsp_que *rsp;
2273         struct device_reg_24xx __iomem *reg;
2274         struct scsi_qla_host *vha;
2275         unsigned long flags;
2276
2277         rsp = (struct rsp_que *) dev_id;
2278         if (!rsp) {
2279                 printk(KERN_INFO
2280                 "%s(): NULL response queue pointer.\n", __func__);
2281                 return IRQ_NONE;
2282         }
2283         ha = rsp->hw;
2284         reg = &ha->iobase->isp24;
2285
2286         spin_lock_irqsave(&ha->hardware_lock, flags);
2287
2288         vha = pci_get_drvdata(ha->pdev);
2289         qla24xx_process_response_queue(vha, rsp);
2290         if (!ha->flags.disable_msix_handshake) {
2291                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2292                 RD_REG_DWORD_RELAXED(&reg->hccr);
2293         }
2294         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2295
2296         return IRQ_HANDLED;
2297 }
2298
2299 static irqreturn_t
2300 qla25xx_msix_rsp_q(int irq, void *dev_id)
2301 {
2302         struct qla_hw_data *ha;
2303         struct rsp_que *rsp;
2304         struct device_reg_24xx __iomem *reg;
2305         unsigned long flags;
2306
2307         rsp = (struct rsp_que *) dev_id;
2308         if (!rsp) {
2309                 printk(KERN_INFO
2310                         "%s(): NULL response queue pointer.\n", __func__);
2311                 return IRQ_NONE;
2312         }
2313         ha = rsp->hw;
2314
2315         /* Clear the interrupt, if enabled, for this response queue */
2316         if (!ha->flags.disable_msix_handshake) {
2317                 reg = &ha->iobase->isp24;
2318                 spin_lock_irqsave(&ha->hardware_lock, flags);
2319                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2320                 RD_REG_DWORD_RELAXED(&reg->hccr);
2321                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2322         }
2323         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2324
2325         return IRQ_HANDLED;
2326 }
2327
2328 static irqreturn_t
2329 qla24xx_msix_default(int irq, void *dev_id)
2330 {
2331         scsi_qla_host_t *vha;
2332         struct qla_hw_data *ha;
2333         struct rsp_que *rsp;
2334         struct device_reg_24xx __iomem *reg;
2335         int             status;
2336         uint32_t        stat;
2337         uint32_t        hccr;
2338         uint16_t        mb[4];
2339         unsigned long flags;
2340
2341         rsp = (struct rsp_que *) dev_id;
2342         if (!rsp) {
2343                 printk(KERN_INFO
2344                         "%s(): NULL response queue pointer.\n", __func__);
2345                 return IRQ_NONE;
2346         }
2347         ha = rsp->hw;
2348         reg = &ha->iobase->isp24;
2349         status = 0;
2350
2351         spin_lock_irqsave(&ha->hardware_lock, flags);
2352         vha = pci_get_drvdata(ha->pdev);
2353         do {
2354                 stat = RD_REG_DWORD(&reg->host_status);
2355                 if (stat & HSRX_RISC_PAUSED) {
2356                         if (unlikely(pci_channel_offline(ha->pdev)))
2357                                 break;
2358
2359                         hccr = RD_REG_DWORD(&reg->hccr);
2360
2361                         ql_log(ql_log_info, vha, 0x5050,
2362                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2363                             hccr);
2364
2365                         qla2xxx_check_risc_status(vha);
2366
2367                         ha->isp_ops->fw_dump(vha, 1);
2368                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2369                         break;
2370                 } else if ((stat & HSRX_RISC_INT) == 0)
2371                         break;
2372
2373                 switch (stat & 0xff) {
2374                 case 0x1:
2375                 case 0x2:
2376                 case 0x10:
2377                 case 0x11:
2378                         qla24xx_mbx_completion(vha, MSW(stat));
2379                         status |= MBX_INTERRUPT;
2380
2381                         break;
2382                 case 0x12:
2383                         mb[0] = MSW(stat);
2384                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2385                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2386                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2387                         qla2x00_async_event(vha, rsp, mb);
2388                         break;
2389                 case 0x13:
2390                 case 0x14:
2391                         qla24xx_process_response_queue(vha, rsp);
2392                         break;
2393                 default:
2394                         ql_dbg(ql_dbg_async, vha, 0x5051,
2395                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
2396                         break;
2397                 }
2398                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2399         } while (0);
2400         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2401
2402         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2403             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2404                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2405                 complete(&ha->mbx_intr_comp);
2406         }
2407         return IRQ_HANDLED;
2408 }
2409
2410 /* Interrupt handling helpers. */
2411
2412 struct qla_init_msix_entry {
2413         const char *name;
2414         irq_handler_t handler;
2415 };
2416
2417 static struct qla_init_msix_entry msix_entries[3] = {
2418         { "qla2xxx (default)", qla24xx_msix_default },
2419         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2420         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2421 };
2422
2423 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2424         { "qla2xxx (default)", qla82xx_msix_default },
2425         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2426 };
2427
2428 static void
2429 qla24xx_disable_msix(struct qla_hw_data *ha)
2430 {
2431         int i;
2432         struct qla_msix_entry *qentry;
2433         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2434
2435         for (i = 0; i < ha->msix_count; i++) {
2436                 qentry = &ha->msix_entries[i];
2437                 if (qentry->have_irq)
2438                         free_irq(qentry->vector, qentry->rsp);
2439         }
2440         pci_disable_msix(ha->pdev);
2441         kfree(ha->msix_entries);
2442         ha->msix_entries = NULL;
2443         ha->flags.msix_enabled = 0;
2444         ql_dbg(ql_dbg_init, vha, 0x0042,
2445             "Disabled the MSI.\n");
2446 }
2447
2448 static int
2449 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2450 {
2451 #define MIN_MSIX_COUNT  2
2452         int i, ret;
2453         struct msix_entry *entries;
2454         struct qla_msix_entry *qentry;
2455         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2456
2457         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2458                         GFP_KERNEL);
2459         if (!entries) {
2460                 ql_log(ql_log_warn, vha, 0x00bc,
2461                     "Failed to allocate memory for msix_entry.\n");
2462                 return -ENOMEM;
2463         }
2464
2465         for (i = 0; i < ha->msix_count; i++)
2466                 entries[i].entry = i;
2467
2468         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2469         if (ret) {
2470                 if (ret < MIN_MSIX_COUNT)
2471                         goto msix_failed;
2472
2473                 ql_log(ql_log_warn, vha, 0x00c6,
2474                     "MSI-X: Failed to enable support "
2475                     "-- %d/%d\n Retry with %d vectors.\n",
2476                     ha->msix_count, ret, ret);
2477                 ha->msix_count = ret;
2478                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2479                 if (ret) {
2480 msix_failed:
2481                         ql_log(ql_log_fatal, vha, 0x00c7,
2482                             "MSI-X: Failed to enable support, "
2483                             "giving   up -- %d/%d.\n",
2484                             ha->msix_count, ret);
2485                         goto msix_out;
2486                 }
2487                 ha->max_rsp_queues = ha->msix_count - 1;
2488         }
2489         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2490                                 ha->msix_count, GFP_KERNEL);
2491         if (!ha->msix_entries) {
2492                 ql_log(ql_log_fatal, vha, 0x00c8,
2493                     "Failed to allocate memory for ha->msix_entries.\n");
2494                 ret = -ENOMEM;
2495                 goto msix_out;
2496         }
2497         ha->flags.msix_enabled = 1;
2498
2499         for (i = 0; i < ha->msix_count; i++) {
2500                 qentry = &ha->msix_entries[i];
2501                 qentry->vector = entries[i].vector;
2502                 qentry->entry = entries[i].entry;
2503                 qentry->have_irq = 0;
2504                 qentry->rsp = NULL;
2505         }
2506
2507         /* Enable MSI-X vectors for the base queue */
2508         for (i = 0; i < 2; i++) {
2509                 qentry = &ha->msix_entries[i];
2510                 if (IS_QLA82XX(ha)) {
2511                         ret = request_irq(qentry->vector,
2512                                 qla82xx_msix_entries[i].handler,
2513                                 0, qla82xx_msix_entries[i].name, rsp);
2514                 } else {
2515                         ret = request_irq(qentry->vector,
2516                                 msix_entries[i].handler,
2517                                 0, msix_entries[i].name, rsp);
2518                 }
2519                 if (ret) {
2520                         ql_log(ql_log_fatal, vha, 0x00cb,
2521                             "MSI-X: unable to register handler -- %x/%d.\n",
2522                             qentry->vector, ret);
2523                         qla24xx_disable_msix(ha);
2524                         ha->mqenable = 0;
2525                         goto msix_out;
2526                 }
2527                 qentry->have_irq = 1;
2528                 qentry->rsp = rsp;
2529                 rsp->msix = qentry;
2530         }
2531
2532         /* Enable MSI-X vector for response queue update for queue 0 */
2533         if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2534                 ha->mqenable = 1;
2535         ql_dbg(ql_dbg_multiq, vha, 0xc005,
2536             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2537             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2538         ql_dbg(ql_dbg_init, vha, 0x0055,
2539             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2540             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2541
2542 msix_out:
2543         kfree(entries);
2544         return ret;
2545 }
2546
2547 int
2548 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2549 {
2550         int ret;
2551         device_reg_t __iomem *reg = ha->iobase;
2552         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2553
2554         /* If possible, enable MSI-X. */
2555         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2556                 !IS_QLA8432(ha) && !IS_QLA8XXX_TYPE(ha))
2557                 goto skip_msi;
2558
2559         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2560                 (ha->pdev->subsystem_device == 0x7040 ||
2561                 ha->pdev->subsystem_device == 0x7041 ||
2562                 ha->pdev->subsystem_device == 0x1705)) {
2563                 ql_log(ql_log_warn, vha, 0x0034,
2564                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
2565                         ha->pdev->subsystem_vendor,
2566                         ha->pdev->subsystem_device);
2567                 goto skip_msi;
2568         }
2569
2570         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
2571                 ql_log(ql_log_warn, vha, 0x0035,
2572                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
2573                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
2574                 goto skip_msix;
2575         }
2576
2577         ret = qla24xx_enable_msix(ha, rsp);
2578         if (!ret) {
2579                 ql_dbg(ql_dbg_init, vha, 0x0036,
2580                     "MSI-X: Enabled (0x%X, 0x%X).\n",
2581                     ha->chip_revision, ha->fw_attributes);
2582                 goto clear_risc_ints;
2583         }
2584         ql_log(ql_log_info, vha, 0x0037,
2585             "MSI-X Falling back-to MSI mode -%d.\n", ret);
2586 skip_msix:
2587
2588         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2589             !IS_QLA8001(ha))
2590                 goto skip_msi;
2591
2592         ret = pci_enable_msi(ha->pdev);
2593         if (!ret) {
2594                 ql_dbg(ql_dbg_init, vha, 0x0038,
2595                     "MSI: Enabled.\n");
2596                 ha->flags.msi_enabled = 1;
2597         } else
2598                 ql_log(ql_log_warn, vha, 0x0039,
2599                     "MSI-X; Falling back-to INTa mode -- %d.\n", ret);
2600 skip_msi:
2601
2602         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2603             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2604             QLA2XXX_DRIVER_NAME, rsp);
2605         if (ret) {
2606                 ql_log(ql_log_warn, vha, 0x003a,
2607                     "Failed to reserve interrupt %d already in use.\n",
2608                     ha->pdev->irq);
2609                 goto fail;
2610         }
2611
2612 clear_risc_ints:
2613
2614         /*
2615          * FIXME: Noted that 8014s were being dropped during NK testing.
2616          * Timing deltas during MSI-X/INTa transitions?
2617          */
2618         if (IS_QLA81XX(ha) || IS_QLA82XX(ha))
2619                 goto fail;
2620         spin_lock_irq(&ha->hardware_lock);
2621         if (IS_FWI2_CAPABLE(ha)) {
2622                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2623                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2624         } else {
2625                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2626                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2627                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2628         }
2629         spin_unlock_irq(&ha->hardware_lock);
2630
2631 fail:
2632         return ret;
2633 }
2634
2635 void
2636 qla2x00_free_irqs(scsi_qla_host_t *vha)
2637 {
2638         struct qla_hw_data *ha = vha->hw;
2639         struct rsp_que *rsp = ha->rsp_q_map[0];
2640
2641         if (ha->flags.msix_enabled)
2642                 qla24xx_disable_msix(ha);
2643         else if (ha->flags.msi_enabled) {
2644                 free_irq(ha->pdev->irq, rsp);
2645                 pci_disable_msi(ha->pdev);
2646         } else
2647                 free_irq(ha->pdev->irq, rsp);
2648 }
2649
2650
2651 int qla25xx_request_irq(struct rsp_que *rsp)
2652 {
2653         struct qla_hw_data *ha = rsp->hw;
2654         struct qla_init_msix_entry *intr = &msix_entries[2];
2655         struct qla_msix_entry *msix = rsp->msix;
2656         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2657         int ret;
2658
2659         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2660         if (ret) {
2661                 ql_log(ql_log_fatal, vha, 0x00e6,
2662                     "MSI-X: Unable to register handler -- %x/%d.\n",
2663                     msix->vector, ret);
2664                 return ret;
2665         }
2666         msix->have_irq = 1;
2667         msix->rsp = rsp;
2668         return ret;
2669 }