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 hammmer 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                                 DEBUG2(printk("scsi(%ld): Unrecognized "
  95                                     "interrupt type (%d).\n",
  96                                     vha->host_no, 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                                 qla_printk(KERN_INFO, ha, "Parity error -- "
 164                                     "HCCR=%x, Dumping firmware!\n", hccr);
 165                         else
 166                                 qla_printk(KERN_INFO, ha, "RISC paused -- "
 167                                     "HCCR=%x, Dumping firmware!\n", hccr);
 168
 169                         /*
 170                          * Issue a "HARD" reset in order for the RISC
 171                          * interrupt bit to be cleared.  Schedule a big
 172                          * hammmer to get out of the RISC PAUSED state.
 173                          */
 174                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 175                         RD_REG_WORD(&reg->hccr);
 176
 177                         ha->isp_ops->fw_dump(vha, 1);
 178                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 179                         break;
 180                 } else if ((stat & HSR_RISC_INT) == 0)
 181                         break;
 182
 183                 switch (stat & 0xff) {
 184                 case 0x1:
 185                 case 0x2:
 186                 case 0x10:
 187                 case 0x11:
 188                         qla2x00_mbx_completion(vha, MSW(stat));
 189                         status |= MBX_INTERRUPT;
 190
 191                         /* Release mailbox registers. */
 192                         WRT_REG_WORD(&reg->semaphore, 0);
 193                         break;
 194                 case 0x12:
 195                         mb[0] = MSW(stat);
 196                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 197                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 198                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 199                         qla2x00_async_event(vha, rsp, mb);
 200                         break;
 201                 case 0x13:
 202                         qla2x00_process_response_queue(rsp);
 203                         break;
 204                 case 0x15:
 205                         mb[0] = MBA_CMPLT_1_16BIT;
 206                         mb[1] = MSW(stat);
 207                         qla2x00_async_event(vha, rsp, mb);
 208                         break;
 209                 case 0x16:
 210                         mb[0] = MBA_SCSI_COMPLETION;
 211                         mb[1] = MSW(stat);
 212                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 213                         qla2x00_async_event(vha, rsp, mb);
 214                         break;
 215                 default:
 216                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
 217                             "(%d).\n",
 218                             vha->host_no, stat & 0xff));
 219                         break;
 220                 }
 221                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 222                 RD_REG_WORD_RELAXED(&reg->hccr);
 223         }
 224         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 225
 226         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 227             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 228                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 229                 complete(&ha->mbx_intr_comp);
 230         }
 231
 232         return (IRQ_HANDLED);
 233 }
 234
 235 /**
 236  * qla2x00_mbx_completion() - Process mailbox command completions.
 237  * @ha: SCSI driver HA context
 238  * @mb0: Mailbox0 register
 239  */
 240 static void
 241 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 242 {
 243         uint16_t        cnt;
 244         uint16_t __iomem *wptr;
 245         struct qla_hw_data *ha = vha->hw;
 246         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 247
 248         /* Load return mailbox registers. */
 249         ha->flags.mbox_int = 1;
 250         ha->mailbox_out[0] = mb0;
 251         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 252
 253         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 254                 if (IS_QLA2200(ha) && cnt == 8)
 255                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 256                 if (cnt == 4 || cnt == 5)
 257                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 258                 else
 259                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 260
 261                 wptr++;
 262         }
 263
 264         if (ha->mcp) {
 265                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
 266                     __func__, vha->host_no, ha->mcp->mb[0]));
 267         } else {
 268                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
 269                     __func__, vha->host_no));
 270         }
 271 }
 272
 273 static void
 274 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 275 {
 276         static char *event[] =
 277                 { "Complete", "Request Notification", "Time Extension" };
 278         int rval;
 279         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 280         uint16_t __iomem *wptr;
 281         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 282
 283         /* Seed data -- mailbox1 -> mailbox7. */
 284         wptr = (uint16_t __iomem *)&reg24->mailbox1;
 285         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 286                 mb[cnt] = RD_REG_WORD(wptr);
 287
 288         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 289             "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
 290             event[aen & 0xff],
 291             mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
 292
 293         /* Acknowledgement needed? [Notify && non-zero timeout]. */
 294         timeout = (descr >> 8) & 0xf;
 295         if (aen != MBA_IDC_NOTIFY || !timeout)
 296                 return;
 297
 298         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 299             "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
 300
 301         rval = qla2x00_post_idc_ack_work(vha, mb);
 302         if (rval != QLA_SUCCESS)
 303                 qla_printk(KERN_WARNING, vha->hw,
 304                     "IDC failed to post ACK.\n");
 305 }
 306
 307 /**
 308  * qla2x00_async_event() - Process aynchronous events.
 309  * @ha: SCSI driver HA context
 310  * @mb: Mailbox registers (0 - 3)
 311  */
 312 void
 313 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 314 {
 315 #define LS_UNKNOWN      2
 316         static char     *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
 317         char            *link_speed;
 318         uint16_t        handle_cnt;
 319         uint16_t        cnt, mbx;
 320         uint32_t        handles[5];
 321         struct qla_hw_data *ha = vha->hw;
 322         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 323         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 324         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 325         uint32_t        rscn_entry, host_pid;
 326         uint8_t         rscn_queue_index;
 327         unsigned long   flags;
 328
 329         /* Setup to process RIO completion. */
 330         handle_cnt = 0;
 331         if (IS_QLA8XXX_TYPE(ha))
 332                 goto skip_rio;
 333         switch (mb[0]) {
 334         case MBA_SCSI_COMPLETION:
 335                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 336                 handle_cnt = 1;
 337                 break;
 338         case MBA_CMPLT_1_16BIT:
 339                 handles[0] = mb[1];
 340                 handle_cnt = 1;
 341                 mb[0] = MBA_SCSI_COMPLETION;
 342                 break;
 343         case MBA_CMPLT_2_16BIT:
 344                 handles[0] = mb[1];
 345                 handles[1] = mb[2];
 346                 handle_cnt = 2;
 347                 mb[0] = MBA_SCSI_COMPLETION;
 348                 break;
 349         case MBA_CMPLT_3_16BIT:
 350                 handles[0] = mb[1];
 351                 handles[1] = mb[2];
 352                 handles[2] = mb[3];
 353                 handle_cnt = 3;
 354                 mb[0] = MBA_SCSI_COMPLETION;
 355                 break;
 356         case MBA_CMPLT_4_16BIT:
 357                 handles[0] = mb[1];
 358                 handles[1] = mb[2];
 359                 handles[2] = mb[3];
 360                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 361                 handle_cnt = 4;
 362                 mb[0] = MBA_SCSI_COMPLETION;
 363                 break;
 364         case MBA_CMPLT_5_16BIT:
 365                 handles[0] = mb[1];
 366                 handles[1] = mb[2];
 367                 handles[2] = mb[3];
 368                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 369                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 370                 handle_cnt = 5;
 371                 mb[0] = MBA_SCSI_COMPLETION;
 372                 break;
 373         case MBA_CMPLT_2_32BIT:
 374                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 375                 handles[1] = le32_to_cpu(
 376                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 377                     RD_MAILBOX_REG(ha, reg, 6));
 378                 handle_cnt = 2;
 379                 mb[0] = MBA_SCSI_COMPLETION;
 380                 break;
 381         default:
 382                 break;
 383         }
 384 skip_rio:
 385         switch (mb[0]) {
 386         case MBA_SCSI_COMPLETION:       /* Fast Post */
 387                 if (!vha->flags.online)
 388                         break;
 389
 390                 for (cnt = 0; cnt < handle_cnt; cnt++)
 391                         qla2x00_process_completed_request(vha, rsp->req,
 392                                 handles[cnt]);
 393                 break;
 394
 395         case MBA_RESET:                 /* Reset */
 396                 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
 397                         vha->host_no));
 398
 399                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 400                 break;
 401
 402         case MBA_SYSTEM_ERR:            /* System Error */
 403                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
 404                 qla_printk(KERN_INFO, ha,
 405                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 406                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 407
 408                 ha->isp_ops->fw_dump(vha, 1);
 409
 410                 if (IS_FWI2_CAPABLE(ha)) {
 411                         if (mb[1] == 0 && mb[2] == 0) {
 412                                 qla_printk(KERN_ERR, ha,
 413                                     "Unrecoverable Hardware Error: adapter "
 414                                     "marked OFFLINE!\n");
 415                                 vha->flags.online = 0;
 416                         } else {
 417                                 /* Check to see if MPI timeout occurred */
 418                                 if ((mbx & MBX_3) && (ha->flags.port0))
 419                                         set_bit(MPI_RESET_NEEDED,
 420                                             &vha->dpc_flags);
 421
 422                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 423                         }
 424                 } else if (mb[1] == 0) {
 425                         qla_printk(KERN_INFO, ha,
 426                             "Unrecoverable Hardware Error: adapter marked "
 427                             "OFFLINE!\n");
 428                         vha->flags.online = 0;
 429                 } else
 430                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 431                 break;
 432
 433         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 434                 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
 435                     vha->host_no, mb[1]));
 436                 qla_printk(KERN_WARNING, ha,
 437                     "ISP Request Transfer Error (%x).\n", mb[1]);
 438
 439                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 440                 break;
 441
 442         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 443                 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
 444                     vha->host_no));
 445                 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
 446
 447                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 448                 break;
 449
 450         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 451                 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
 452                     vha->host_no));
 453                 break;
 454
 455         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 456                 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
 457                     mb[1]));
 458                 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
 459
 460                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 461                         atomic_set(&vha->loop_state, LOOP_DOWN);
 462                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 463                         qla2x00_mark_all_devices_lost(vha, 1);
 464                 }
 465
 466                 if (vha->vp_idx) {
 467                         atomic_set(&vha->vp_state, VP_FAILED);
 468                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 469                 }
 470
 471                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 472                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 473
 474                 vha->flags.management_server_logged_in = 0;
 475                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 476                 break;
 477
 478         case MBA_LOOP_UP:               /* Loop Up Event */
 479                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 480                         link_speed = link_speeds[0];
 481                         ha->link_data_rate = PORT_SPEED_1GB;
 482                 } else {
 483                         link_speed = link_speeds[LS_UNKNOWN];
 484                         if (mb[1] < 5)
 485                                 link_speed = link_speeds[mb[1]];
 486                         else if (mb[1] == 0x13)
 487                                 link_speed = link_speeds[5];
 488                         ha->link_data_rate = mb[1];
 489                 }
 490
 491                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
 492                     vha->host_no, link_speed));
 493                 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
 494                     link_speed);
 495
 496                 vha->flags.management_server_logged_in = 0;
 497                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 498                 break;
 499
 500         case MBA_LOOP_DOWN:             /* Loop Down Event */
 501                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
 502                 mbx = IS_QLA82XX(ha) ? RD_REG_WORD(&reg82->mailbox_out[4]) : mbx;
 503                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
 504                     "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
 505                     mbx));
 506                 qla_printk(KERN_INFO, ha,
 507                     "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
 508                     mbx);
 509
 510                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 511                         atomic_set(&vha->loop_state, LOOP_DOWN);
 512                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 513                         vha->device_flags |= DFLG_NO_CABLE;
 514                         qla2x00_mark_all_devices_lost(vha, 1);
 515                 }
 516
 517                 if (vha->vp_idx) {
 518                         atomic_set(&vha->vp_state, VP_FAILED);
 519                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 520                 }
 521
 522                 vha->flags.management_server_logged_in = 0;
 523                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 524                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 525                 break;
 526
 527         case MBA_LIP_RESET:             /* LIP reset occurred */
 528                 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
 529                     vha->host_no, mb[1]));
 530                 qla_printk(KERN_INFO, ha,
 531                     "LIP reset occurred (%x).\n", mb[1]);
 532
 533                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 534                         atomic_set(&vha->loop_state, LOOP_DOWN);
 535                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 536                         qla2x00_mark_all_devices_lost(vha, 1);
 537                 }
 538
 539                 if (vha->vp_idx) {
 540                         atomic_set(&vha->vp_state, VP_FAILED);
 541                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 542                 }
 543
 544                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 545
 546                 ha->operating_mode = LOOP;
 547                 vha->flags.management_server_logged_in = 0;
 548                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 549                 break;
 550
 551         /* case MBA_DCBX_COMPLETE: */
 552         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 553                 if (IS_QLA2100(ha))
 554                         break;
 555
 556                 if (IS_QLA8XXX_TYPE(ha)) {
 557                         DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
 558                             "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 559                         if (ha->notify_dcbx_comp)
 560                                 complete(&ha->dcbx_comp);
 561
 562                 } else
 563                         DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
 564                             "received.\n", vha->host_no));
 565
 566                 /*
 567                  * Until there's a transition from loop down to loop up, treat
 568                  * this as loop down only.
 569                  */
 570                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 571                         atomic_set(&vha->loop_state, LOOP_DOWN);
 572                         if (!atomic_read(&vha->loop_down_timer))
 573                                 atomic_set(&vha->loop_down_timer,
 574                                     LOOP_DOWN_TIME);
 575                         qla2x00_mark_all_devices_lost(vha, 1);
 576                 }
 577
 578                 if (vha->vp_idx) {
 579                         atomic_set(&vha->vp_state, VP_FAILED);
 580                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 581                 }
 582
 583                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 584                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 585
 586                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 587                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 588
 589                 ha->flags.gpsc_supported = 1;
 590                 vha->flags.management_server_logged_in = 0;
 591                 break;
 592
 593         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 594                 if (IS_QLA2100(ha))
 595                         break;
 596
 597                 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
 598                     "received.\n",
 599                     vha->host_no));
 600                 qla_printk(KERN_INFO, ha,
 601                     "Configuration change detected: value=%x.\n", mb[1]);
 602
 603                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 604                         atomic_set(&vha->loop_state, LOOP_DOWN);
 605                         if (!atomic_read(&vha->loop_down_timer))
 606                                 atomic_set(&vha->loop_down_timer,
 607                                     LOOP_DOWN_TIME);
 608                         qla2x00_mark_all_devices_lost(vha, 1);
 609                 }
 610
 611                 if (vha->vp_idx) {
 612                         atomic_set(&vha->vp_state, VP_FAILED);
 613                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 614                 }
 615
 616                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 617                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 618                 break;
 619
 620         case MBA_PORT_UPDATE:           /* Port database update */
 621                 /*
 622                  * Handle only global and vn-port update events
 623                  *
 624                  * Relevant inputs:
 625                  * mb[1] = N_Port handle of changed port
 626                  * OR 0xffff for global event
 627                  * mb[2] = New login state
 628                  * 7 = Port logged out
 629                  * mb[3] = LSB is vp_idx, 0xff = all vps
 630                  *
 631                  * Skip processing if:
 632                  *       Event is global, vp_idx is NOT all vps,
 633                  *           vp_idx does not match
 634                  *       Event is not global, vp_idx does not match
 635                  */
 636                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 637                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 638                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 639                         break;
 640
 641                 /* Global event -- port logout or port unavailable. */
 642                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 643                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 644                             vha->host_no));
 645                         DEBUG(printk(KERN_INFO
 646                             "scsi(%ld): Port unavailable %04x %04x %04x.\n",
 647                             vha->host_no, mb[1], mb[2], mb[3]));
 648
 649                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 650                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 651                                 atomic_set(&vha->loop_down_timer,
 652                                     LOOP_DOWN_TIME);
 653                                 vha->device_flags |= DFLG_NO_CABLE;
 654                                 qla2x00_mark_all_devices_lost(vha, 1);
 655                         }
 656
 657                         if (vha->vp_idx) {
 658                                 atomic_set(&vha->vp_state, VP_FAILED);
 659                                 fc_vport_set_state(vha->fc_vport,
 660                                     FC_VPORT_FAILED);
 661                                 qla2x00_mark_all_devices_lost(vha, 1);
 662                         }
 663
 664                         vha->flags.management_server_logged_in = 0;
 665                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 666                         break;
 667                 }
 668
 669                 /*
 670                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 671                  * event etc. earlier indicating loop is down) then process
 672                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 673                  */
 674                 atomic_set(&vha->loop_down_timer, 0);
 675                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 676                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 677                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
 678                             "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
 679                             mb[2], mb[3]));
 680                         break;
 681                 }
 682
 683                 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 684                     vha->host_no));
 685                 DEBUG(printk(KERN_INFO
 686                     "scsi(%ld): Port database changed %04x %04x %04x.\n",
 687                     vha->host_no, mb[1], mb[2], mb[3]));
 688
 689                 /*
 690                  * Mark all devices as missing so we will login again.
 691                  */
 692                 atomic_set(&vha->loop_state, LOOP_UP);
 693
 694                 qla2x00_mark_all_devices_lost(vha, 1);
 695
 696                 vha->flags.rscn_queue_overflow = 1;
 697
 698                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 699                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 700                 break;
 701
 702         case MBA_RSCN_UPDATE:           /* State Change Registration */
 703                 /* Check if the Vport has issued a SCR */
 704                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 705                         break;
 706                 /* Only handle SCNs for our Vport index. */
 707                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 708                         break;
 709
 710                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
 711                     vha->host_no));
 712                 DEBUG(printk(KERN_INFO
 713                     "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
 714                     vha->host_no, mb[1], mb[2], mb[3]));
 715
 716                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 717                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 718                                 | vha->d_id.b.al_pa;
 719                 if (rscn_entry == host_pid) {
 720                         DEBUG(printk(KERN_INFO
 721                             "scsi(%ld): Ignoring RSCN update to local host "
 722                             "port ID (%06x)\n",
 723                             vha->host_no, host_pid));
 724                         break;
 725                 }
 726
 727                 /* Ignore reserved bits from RSCN-payload. */
 728                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 729                 rscn_queue_index = vha->rscn_in_ptr + 1;
 730                 if (rscn_queue_index == MAX_RSCN_COUNT)
 731                         rscn_queue_index = 0;
 732                 if (rscn_queue_index != vha->rscn_out_ptr) {
 733                         vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
 734                         vha->rscn_in_ptr = rscn_queue_index;
 735                 } else {
 736                         vha->flags.rscn_queue_overflow = 1;
 737                 }
 738
 739                 atomic_set(&vha->loop_down_timer, 0);
 740                 vha->flags.management_server_logged_in = 0;
 741
 742                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 743                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 744                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 745                 break;
 746
 747         /* case MBA_RIO_RESPONSE: */
 748         case MBA_ZIO_RESPONSE:
 749                 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
 750                     vha->host_no));
 751
 752                 if (IS_FWI2_CAPABLE(ha))
 753                         qla24xx_process_response_queue(vha, rsp);
 754                 else
 755                         qla2x00_process_response_queue(rsp);
 756                 break;
 757
 758         case MBA_DISCARD_RND_FRAME:
 759                 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
 760                     "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
 761                 break;
 762
 763         case MBA_TRACE_NOTIFICATION:
 764                 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
 765                 vha->host_no, mb[1], mb[2]));
 766                 break;
 767
 768         case MBA_ISP84XX_ALERT:
 769                 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
 770                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 771
 772                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 773                 switch (mb[1]) {
 774                 case A84_PANIC_RECOVERY:
 775                         qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
 776                             "%04x %04x\n", mb[2], mb[3]);
 777                         break;
 778                 case A84_OP_LOGIN_COMPLETE:
 779                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 780                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 781                             "firmware version %x\n", ha->cs84xx->op_fw_version));
 782                         break;
 783                 case A84_DIAG_LOGIN_COMPLETE:
 784                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 785                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 786                             "diagnostic firmware version %x\n",
 787                             ha->cs84xx->diag_fw_version));
 788                         break;
 789                 case A84_GOLD_LOGIN_COMPLETE:
 790                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 791                         ha->cs84xx->fw_update = 1;
 792                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
 793                             "firmware version %x\n",
 794                             ha->cs84xx->gold_fw_version));
 795                         break;
 796                 default:
 797                         qla_printk(KERN_ERR, ha,
 798                             "Alert 84xx: Invalid Alert %04x %04x %04x\n",
 799                             mb[1], mb[2], mb[3]);
 800                 }
 801                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
 802                 break;
 803         case MBA_DCBX_START:
 804                 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
 805                     vha->host_no, mb[1], mb[2], mb[3]));
 806                 break;
 807         case MBA_DCBX_PARAM_UPDATE:
 808                 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
 809                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 810                 break;
 811         case MBA_FCF_CONF_ERR:
 812                 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
 813                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 814                 break;
 815         case MBA_IDC_COMPLETE:
 816         case MBA_IDC_NOTIFY:
 817         case MBA_IDC_TIME_EXT:
 818                 qla81xx_idc_event(vha, mb[0], mb[1]);
 819                 break;
 820         }
 821
 822         if (!vha->vp_idx && ha->num_vhosts)
 823                 qla2x00_alert_all_vps(rsp, mb);
 824 }
 825
 826 /**
 827  * qla2x00_process_completed_request() - Process a Fast Post response.
 828  * @ha: SCSI driver HA context
 829  * @index: SRB index
 830  */
 831 static void
 832 qla2x00_process_completed_request(struct scsi_qla_host *vha,
 833                                 struct req_que *req, uint32_t index)
 834 {
 835         srb_t *sp;
 836         struct qla_hw_data *ha = vha->hw;
 837
 838         /* Validate handle. */
 839         if (index >= MAX_OUTSTANDING_COMMANDS) {
 840                 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
 841                     vha->host_no, index));
 842                 qla_printk(KERN_WARNING, ha,
 843                     "Invalid SCSI completion handle %d.\n", index);
 844
 845                 if (IS_QLA82XX(ha))
 846                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 847                 else
 848                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 849                 return;
 850         }
 851
 852         sp = req->outstanding_cmds[index];
 853         if (sp) {
 854                 /* Free outstanding command slot. */
 855                 req->outstanding_cmds[index] = NULL;
 856
 857                 /* Save ISP completion status */
 858                 sp->cmd->result = DID_OK << 16;
 859                 qla2x00_sp_compl(ha, sp);
 860         } else {
 861                 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
 862                         " handle(0x%x)\n", vha->host_no, req->id, index));
 863                 qla_printk(KERN_WARNING, ha,
 864                     "Invalid ISP SCSI completion handle\n");
 865
 866                 if (IS_QLA82XX(ha))
 867                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 868                 else
 869                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 870         }
 871 }
 872
 873 static srb_t *
 874 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 875     struct req_que *req, void *iocb)
 876 {
 877         struct qla_hw_data *ha = vha->hw;
 878         sts_entry_t *pkt = iocb;
 879         srb_t *sp = NULL;
 880         uint16_t index;
 881
 882         index = LSW(pkt->handle);
 883         if (index >= MAX_OUTSTANDING_COMMANDS) {
 884                 qla_printk(KERN_WARNING, ha,
 885                     "%s: Invalid completion handle (%x).\n", func, index);
 886                 if (IS_QLA82XX(ha))
 887                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
 888                 else
 889                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 890                 goto done;
 891         }
 892         sp = req->outstanding_cmds[index];
 893         if (!sp) {
 894                 qla_printk(KERN_WARNING, ha,
 895                     "%s: Invalid completion handle (%x) -- timed-out.\n", func,
 896                     index);
 897                 return sp;
 898         }
 899         if (sp->handle != index) {
 900                 qla_printk(KERN_WARNING, ha,
 901                     "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
 902                     index);
 903                 return NULL;
 904         }
 905
 906         req->outstanding_cmds[index] = NULL;
 907
 908 done:
 909         return sp;
 910 }
 911
 912 static void
 913 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
 914     struct mbx_entry *mbx)
 915 {
 916         const char func[] = "MBX-IOCB";
 917         const char *type;
 918         fc_port_t *fcport;
 919         srb_t *sp;
 920         struct srb_iocb *lio;
 921         struct srb_ctx *ctx;
 922         uint16_t *data;
 923         uint16_t status;
 924
 925         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
 926         if (!sp)
 927                 return;
 928
 929         ctx = sp->ctx;
 930         lio = ctx->u.iocb_cmd;
 931         type = ctx->name;
 932         fcport = sp->fcport;
 933         data = lio->u.logio.data;
 934
 935         data[0] = MBS_COMMAND_ERROR;
 936         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
 937             QLA_LOGIO_LOGIN_RETRIED : 0;
 938         if (mbx->entry_status) {
 939                 DEBUG2(printk(KERN_WARNING
 940                     "scsi(%ld:%x): Async-%s error entry - portid=%02x%02x%02x "
 941                     "entry-status=%x status=%x state-flag=%x "
 942                     "status-flags=%x.\n",
 943                     fcport->vha->host_no, sp->handle, type,
 944                     fcport->d_id.b.domain, fcport->d_id.b.area,
 945                     fcport->d_id.b.al_pa, mbx->entry_status,
 946                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
 947                     le16_to_cpu(mbx->status_flags)));
 948
 949                 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
 950
 951                 goto logio_done;
 952         }
 953
 954         status = le16_to_cpu(mbx->status);
 955         if (status == 0x30 && ctx->type == SRB_LOGIN_CMD &&
 956             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
 957                 status = 0;
 958         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
 959                 DEBUG2(printk(KERN_DEBUG
 960                     "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
 961                     "mbx1=%x.\n",
 962                     fcport->vha->host_no, sp->handle, type,
 963                     fcport->d_id.b.domain, fcport->d_id.b.area,
 964                     fcport->d_id.b.al_pa, le16_to_cpu(mbx->mb1)));
 965
 966                 data[0] = MBS_COMMAND_COMPLETE;
 967                 if (ctx->type == SRB_LOGIN_CMD) {
 968                         fcport->port_type = FCT_TARGET;
 969                         if (le16_to_cpu(mbx->mb1) & BIT_0)
 970                                 fcport->port_type = FCT_INITIATOR;
 971                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
 972                                 fcport->flags |= FCF_FCP2_DEVICE;
 973                 }
 974                 goto logio_done;
 975         }
 976
 977         data[0] = le16_to_cpu(mbx->mb0);
 978         switch (data[0]) {
 979         case MBS_PORT_ID_USED:
 980                 data[1] = le16_to_cpu(mbx->mb1);
 981                 break;
 982         case MBS_LOOP_ID_USED:
 983                 break;
 984         default:
 985                 data[0] = MBS_COMMAND_ERROR;
 986                 break;
 987         }
 988
 989         DEBUG2(printk(KERN_WARNING
 990             "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x status=%x "
 991             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n",
 992             fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
 993             fcport->d_id.b.area, fcport->d_id.b.al_pa, status,
 994             le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
 995             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
 996             le16_to_cpu(mbx->mb7)));
 997
 998 logio_done:
 999         lio->done(sp);
1000 }
1001
1002 static void
1003 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1004     sts_entry_t *pkt, int iocb_type)
1005 {
1006         const char func[] = "CT_IOCB";
1007         const char *type;
1008         struct qla_hw_data *ha = vha->hw;
1009         srb_t *sp;
1010         struct srb_ctx *sp_bsg;
1011         struct fc_bsg_job *bsg_job;
1012         uint16_t comp_status;
1013
1014         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1015         if (!sp)
1016                 return;
1017
1018         sp_bsg = sp->ctx;
1019         bsg_job = sp_bsg->u.bsg_job;
1020
1021         type = NULL;
1022         switch (sp_bsg->type) {
1023         case SRB_CT_CMD:
1024                 type = "ct pass-through";
1025                 break;
1026         default:
1027                 qla_printk(KERN_WARNING, ha,
1028                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1029                     sp_bsg->type);
1030                 return;
1031         }
1032
1033         comp_status = le16_to_cpu(pkt->comp_status);
1034
1035         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1036          * fc payload  to the caller
1037          */
1038         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1039         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1040
1041         if (comp_status != CS_COMPLETE) {
1042                 if (comp_status == CS_DATA_UNDERRUN) {
1043                         bsg_job->reply->result = DID_OK << 16;
1044                         bsg_job->reply->reply_payload_rcv_len =
1045                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1046
1047                         DEBUG2(qla_printk(KERN_WARNING, ha,
1048                             "scsi(%ld): CT pass-through-%s error "
1049                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1050                             vha->host_no, type, comp_status,
1051                             bsg_job->reply->reply_payload_rcv_len));
1052                 } else {
1053                         DEBUG2(qla_printk(KERN_WARNING, ha,
1054                             "scsi(%ld): CT pass-through-%s error "
1055                             "comp_status-status=0x%x.\n",
1056                             vha->host_no, type, comp_status));
1057                         bsg_job->reply->result = DID_ERROR << 16;
1058                         bsg_job->reply->reply_payload_rcv_len = 0;
1059                 }
1060                 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1061         } else {
1062                 bsg_job->reply->result =  DID_OK << 16;
1063                 bsg_job->reply->reply_payload_rcv_len =
1064                     bsg_job->reply_payload.payload_len;
1065                 bsg_job->reply_len = 0;
1066         }
1067
1068         dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
1069             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1070
1071         dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
1072             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1073
1074         if (sp_bsg->type == SRB_ELS_CMD_HST || sp_bsg->type == SRB_CT_CMD)
1075                 kfree(sp->fcport);
1076
1077         kfree(sp->ctx);
1078         mempool_free(sp, ha->srb_mempool);
1079         bsg_job->job_done(bsg_job);
1080 }
1081
1082 static void
1083 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1084     struct sts_entry_24xx *pkt, int iocb_type)
1085 {
1086         const char func[] = "ELS_CT_IOCB";
1087         const char *type;
1088         struct qla_hw_data *ha = vha->hw;
1089         srb_t *sp;
1090         struct srb_ctx *sp_bsg;
1091         struct fc_bsg_job *bsg_job;
1092         uint16_t comp_status;
1093         uint32_t fw_status[3];
1094         uint8_t* fw_sts_ptr;
1095
1096         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1097         if (!sp)
1098                 return;
1099         sp_bsg = sp->ctx;
1100         bsg_job = sp_bsg->u.bsg_job;
1101
1102         type = NULL;
1103         switch (sp_bsg->type) {
1104         case SRB_ELS_CMD_RPT:
1105         case SRB_ELS_CMD_HST:
1106                 type = "els";
1107                 break;
1108         case SRB_CT_CMD:
1109                 type = "ct pass-through";
1110                 break;
1111         default:
1112                 qla_printk(KERN_WARNING, ha,
1113                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1114                     sp_bsg->type);
1115                 return;
1116         }
1117
1118         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1119         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1120         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1121
1122         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1123          * fc payload  to the caller
1124          */
1125         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1126         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1127
1128         if (comp_status != CS_COMPLETE) {
1129                 if (comp_status == CS_DATA_UNDERRUN) {
1130                         bsg_job->reply->result = DID_OK << 16;
1131                         bsg_job->reply->reply_payload_rcv_len =
1132                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
1133
1134                         DEBUG2(qla_printk(KERN_WARNING, ha,
1135                             "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1136                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1137                                 vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
1138                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
1139                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1140                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1141                 }
1142                 else {
1143                         DEBUG2(qla_printk(KERN_WARNING, ha,
1144                             "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1145                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1146                                 vha->host_no, sp->handle, type, comp_status,
1147                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
1148                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
1149                         bsg_job->reply->result = DID_ERROR << 16;
1150                         bsg_job->reply->reply_payload_rcv_len = 0;
1151                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1152                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1153                 }
1154                 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1155         }
1156         else {
1157                 bsg_job->reply->result =  DID_OK << 16;
1158                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1159                 bsg_job->reply_len = 0;
1160         }
1161
1162         dma_unmap_sg(&ha->pdev->dev,
1163             bsg_job->request_payload.sg_list,
1164             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1165         dma_unmap_sg(&ha->pdev->dev,
1166             bsg_job->reply_payload.sg_list,
1167             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1168         if ((sp_bsg->type == SRB_ELS_CMD_HST) ||
1169             (sp_bsg->type == SRB_CT_CMD))
1170                 kfree(sp->fcport);
1171         kfree(sp->ctx);
1172         mempool_free(sp, ha->srb_mempool);
1173         bsg_job->job_done(bsg_job);
1174 }
1175
1176 static void
1177 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1178     struct logio_entry_24xx *logio)
1179 {
1180         const char func[] = "LOGIO-IOCB";
1181         const char *type;
1182         fc_port_t *fcport;
1183         srb_t *sp;
1184         struct srb_iocb *lio;
1185         struct srb_ctx *ctx;
1186         uint16_t *data;
1187         uint32_t iop[2];
1188
1189         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1190         if (!sp)
1191                 return;
1192
1193         ctx = sp->ctx;
1194         lio = ctx->u.iocb_cmd;
1195         type = ctx->name;
1196         fcport = sp->fcport;
1197         data = lio->u.logio.data;
1198
1199         data[0] = MBS_COMMAND_ERROR;
1200         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1201                 QLA_LOGIO_LOGIN_RETRIED : 0;
1202         if (logio->entry_status) {
1203                 DEBUG2(printk(KERN_WARNING
1204                     "scsi(%ld:%x): Async-%s error entry - "
1205                     "portid=%02x%02x%02x entry-status=%x.\n",
1206                     fcport->vha->host_no, sp->handle, type,
1207                     fcport->d_id.b.domain, fcport->d_id.b.area,
1208                     fcport->d_id.b.al_pa, logio->entry_status));
1209                 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1210
1211                 goto logio_done;
1212         }
1213
1214         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1215                 DEBUG2(printk(KERN_DEBUG
1216                     "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
1217                     "iop0=%x.\n",
1218                     fcport->vha->host_no, sp->handle, type,
1219                     fcport->d_id.b.domain, fcport->d_id.b.area,
1220                     fcport->d_id.b.al_pa,
1221                     le32_to_cpu(logio->io_parameter[0])));
1222
1223                 data[0] = MBS_COMMAND_COMPLETE;
1224                 if (ctx->type != SRB_LOGIN_CMD)
1225                         goto logio_done;
1226
1227                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1228                 if (iop[0] & BIT_4) {
1229                         fcport->port_type = FCT_TARGET;
1230                         if (iop[0] & BIT_8)
1231                                 fcport->flags |= FCF_FCP2_DEVICE;
1232                 } else if (iop[0] & BIT_5)
1233                         fcport->port_type = FCT_INITIATOR;
1234
1235                 if (logio->io_parameter[7] || logio->io_parameter[8])
1236                         fcport->supported_classes |= FC_COS_CLASS2;
1237                 if (logio->io_parameter[9] || logio->io_parameter[10])
1238                         fcport->supported_classes |= FC_COS_CLASS3;
1239
1240                 goto logio_done;
1241         }
1242
1243         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1244         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1245         switch (iop[0]) {
1246         case LSC_SCODE_PORTID_USED:
1247                 data[0] = MBS_PORT_ID_USED;
1248                 data[1] = LSW(iop[1]);
1249                 break;
1250         case LSC_SCODE_NPORT_USED:
1251                 data[0] = MBS_LOOP_ID_USED;
1252                 break;
1253         default:
1254                 data[0] = MBS_COMMAND_ERROR;
1255                 break;
1256         }
1257
1258         DEBUG2(printk(KERN_WARNING
1259             "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x comp=%x "
1260             "iop0=%x iop1=%x.\n",
1261             fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
1262             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1263             le16_to_cpu(logio->comp_status),
1264             le32_to_cpu(logio->io_parameter[0]),
1265             le32_to_cpu(logio->io_parameter[1])));
1266
1267 logio_done:
1268         lio->done(sp);
1269 }
1270
1271 static void
1272 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1273     struct tsk_mgmt_entry *tsk)
1274 {
1275         const char func[] = "TMF-IOCB";
1276         const char *type;
1277         fc_port_t *fcport;
1278         srb_t *sp;
1279         struct srb_iocb *iocb;
1280         struct srb_ctx *ctx;
1281         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1282         int error = 1;
1283
1284         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1285         if (!sp)
1286                 return;
1287
1288         ctx = sp->ctx;
1289         iocb = ctx->u.iocb_cmd;
1290         type = ctx->name;
1291         fcport = sp->fcport;
1292
1293         if (sts->entry_status) {
1294                 DEBUG2(printk(KERN_WARNING
1295                     "scsi(%ld:%x): Async-%s error - entry-status(%x).\n",
1296                     fcport->vha->host_no, sp->handle, type,
1297                     sts->entry_status));
1298         } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1299                 DEBUG2(printk(KERN_WARNING
1300                     "scsi(%ld:%x): Async-%s error - completion status(%x).\n",
1301                     fcport->vha->host_no, sp->handle, type,
1302                     sts->comp_status));
1303         } else if (!(le16_to_cpu(sts->scsi_status) &
1304             SS_RESPONSE_INFO_LEN_VALID)) {
1305                 DEBUG2(printk(KERN_WARNING
1306                     "scsi(%ld:%x): Async-%s error - no response info(%x).\n",
1307                     fcport->vha->host_no, sp->handle, type,
1308                     sts->scsi_status));
1309         } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1310                 DEBUG2(printk(KERN_WARNING
1311                     "scsi(%ld:%x): Async-%s error - not enough response(%d).\n",
1312                     fcport->vha->host_no, sp->handle, type,
1313                     sts->rsp_data_len));
1314         } else if (sts->data[3]) {
1315                 DEBUG2(printk(KERN_WARNING
1316                     "scsi(%ld:%x): Async-%s error - response(%x).\n",
1317                     fcport->vha->host_no, sp->handle, type,
1318                     sts->data[3]));
1319         } else {
1320                 error = 0;
1321         }
1322
1323         if (error) {
1324                 iocb->u.tmf.data = error;
1325                 DEBUG2(qla2x00_dump_buffer((uint8_t *)sts, sizeof(*sts)));
1326         }
1327
1328         iocb->done(sp);
1329 }
1330
1331 /**
1332  * qla2x00_process_response_queue() - Process response queue entries.
1333  * @ha: SCSI driver HA context
1334  */
1335 void
1336 qla2x00_process_response_queue(struct rsp_que *rsp)
1337 {
1338         struct scsi_qla_host *vha;
1339         struct qla_hw_data *ha = rsp->hw;
1340         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1341         sts_entry_t     *pkt;
1342         uint16_t        handle_cnt;
1343         uint16_t        cnt;
1344
1345         vha = pci_get_drvdata(ha->pdev);
1346
1347         if (!vha->flags.online)
1348                 return;
1349
1350         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1351                 pkt = (sts_entry_t *)rsp->ring_ptr;
1352
1353                 rsp->ring_index++;
1354                 if (rsp->ring_index == rsp->length) {
1355                         rsp->ring_index = 0;
1356                         rsp->ring_ptr = rsp->ring;
1357                 } else {
1358                         rsp->ring_ptr++;
1359                 }
1360
1361                 if (pkt->entry_status != 0) {
1362                         DEBUG3(printk(KERN_INFO
1363                             "scsi(%ld): Process error entry.\n", vha->host_no));
1364
1365                         qla2x00_error_entry(vha, rsp, pkt);
1366                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1367                         wmb();
1368                         continue;
1369                 }
1370
1371                 switch (pkt->entry_type) {
1372                 case STATUS_TYPE:
1373                         qla2x00_status_entry(vha, rsp, pkt);
1374                         break;
1375                 case STATUS_TYPE_21:
1376                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1377                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1378                                 qla2x00_process_completed_request(vha, rsp->req,
1379                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1380                         }
1381                         break;
1382                 case STATUS_TYPE_22:
1383                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1384                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1385                                 qla2x00_process_completed_request(vha, rsp->req,
1386                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1387                         }
1388                         break;
1389                 case STATUS_CONT_TYPE:
1390                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1391                         break;
1392                 case MBX_IOCB_TYPE:
1393                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1394                             (struct mbx_entry *)pkt);
1395                         break;
1396                 case CT_IOCB_TYPE:
1397                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1398                         break;
1399                 default:
1400                         /* Type Not Supported. */
1401                         DEBUG4(printk(KERN_WARNING
1402                             "scsi(%ld): Received unknown response pkt type %x "
1403                             "entry status=%x.\n",
1404                             vha->host_no, pkt->entry_type, pkt->entry_status));
1405                         break;
1406                 }
1407                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1408                 wmb();
1409         }
1410
1411         /* Adjust ring index */
1412         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1413 }
1414
1415 static inline void
1416
1417 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1418     uint32_t sense_len, struct rsp_que *rsp)
1419 {
1420         struct scsi_cmnd *cp = sp->cmd;
1421
1422         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1423                 sense_len = SCSI_SENSE_BUFFERSIZE;
1424
1425         sp->request_sense_length = sense_len;
1426         sp->request_sense_ptr = cp->sense_buffer;
1427         if (sp->request_sense_length > par_sense_len)
1428                 sense_len = par_sense_len;
1429
1430         memcpy(cp->sense_buffer, sense_data, sense_len);
1431
1432         sp->request_sense_ptr += sense_len;
1433         sp->request_sense_length -= sense_len;
1434         if (sp->request_sense_length != 0)
1435                 rsp->status_srb = sp;
1436
1437         DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1438             "cmd=%p\n", __func__, sp->fcport->vha->host_no,
1439             cp->device->channel, cp->device->id, cp->device->lun, cp));
1440         if (sense_len)
1441                 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1442 }
1443
1444 struct scsi_dif_tuple {
1445         __be16 guard;       /* Checksum */
1446         __be16 app_tag;         /* APPL identifer */
1447         __be32 ref_tag;         /* Target LBA or indirect LBA */
1448 };
1449
1450 /*
1451  * Checks the guard or meta-data for the type of error
1452  * detected by the HBA. In case of errors, we set the
1453  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1454  * to indicate to the kernel that the HBA detected error.
1455  */
1456 static inline void
1457 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1458 {
1459         struct scsi_cmnd *cmd = sp->cmd;
1460         struct scsi_dif_tuple   *ep =
1461                         (struct scsi_dif_tuple *)&sts24->data[20];
1462         struct scsi_dif_tuple   *ap =
1463                         (struct scsi_dif_tuple *)&sts24->data[12];
1464         uint32_t        e_ref_tag, a_ref_tag;
1465         uint16_t        e_app_tag, a_app_tag;
1466         uint16_t        e_guard, a_guard;
1467
1468         e_ref_tag = be32_to_cpu(ep->ref_tag);
1469         a_ref_tag = be32_to_cpu(ap->ref_tag);
1470         e_app_tag = be16_to_cpu(ep->app_tag);
1471         a_app_tag = be16_to_cpu(ap->app_tag);
1472         e_guard = be16_to_cpu(ep->guard);
1473         a_guard = be16_to_cpu(ap->guard);
1474
1475         DEBUG18(printk(KERN_DEBUG
1476             "%s(): iocb(s) %p Returned STATUS\n", __func__, sts24));
1477
1478         DEBUG18(printk(KERN_ERR "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1479             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1480             " tag=0x%x, act guard=0x%x, exp guard=0x%x\n",
1481             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1482             a_app_tag, e_app_tag, a_guard, e_guard));
1483
1484
1485         /* check guard */
1486         if (e_guard != a_guard) {
1487                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1488                     0x10, 0x1);
1489                 set_driver_byte(cmd, DRIVER_SENSE);
1490                 set_host_byte(cmd, DID_ABORT);
1491                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1492                 return;
1493         }
1494
1495         /* check appl tag */
1496         if (e_app_tag != a_app_tag) {
1497                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1498                     0x10, 0x2);
1499                 set_driver_byte(cmd, DRIVER_SENSE);
1500                 set_host_byte(cmd, DID_ABORT);
1501                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1502                 return;
1503         }
1504
1505         /* check ref tag */
1506         if (e_ref_tag != a_ref_tag) {
1507                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1508                     0x10, 0x3);
1509                 set_driver_byte(cmd, DRIVER_SENSE);
1510                 set_host_byte(cmd, DID_ABORT);
1511                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1512                 return;
1513         }
1514 }
1515
1516 /**
1517  * qla2x00_status_entry() - Process a Status IOCB entry.
1518  * @ha: SCSI driver HA context
1519  * @pkt: Entry pointer
1520  */
1521 static void
1522 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1523 {
1524         srb_t           *sp;
1525         fc_port_t       *fcport;
1526         struct scsi_cmnd *cp;
1527         sts_entry_t *sts;
1528         struct sts_entry_24xx *sts24;
1529         uint16_t        comp_status;
1530         uint16_t        scsi_status;
1531         uint16_t        ox_id;
1532         uint8_t         lscsi_status;
1533         int32_t         resid;
1534         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1535             fw_resid_len;
1536         uint8_t         *rsp_info, *sense_data;
1537         struct qla_hw_data *ha = vha->hw;
1538         uint32_t handle;
1539         uint16_t que;
1540         struct req_que *req;
1541         int logit = 1;
1542
1543         sts = (sts_entry_t *) pkt;
1544         sts24 = (struct sts_entry_24xx *) pkt;
1545         if (IS_FWI2_CAPABLE(ha)) {
1546                 comp_status = le16_to_cpu(sts24->comp_status);
1547                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1548         } else {
1549                 comp_status = le16_to_cpu(sts->comp_status);
1550                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1551         }
1552         handle = (uint32_t) LSW(sts->handle);
1553         que = MSW(sts->handle);
1554         req = ha->req_q_map[que];
1555
1556         /* Fast path completion. */
1557         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1558                 qla2x00_process_completed_request(vha, req, handle);
1559
1560                 return;
1561         }
1562
1563         /* Validate handle. */
1564         if (handle < MAX_OUTSTANDING_COMMANDS) {
1565                 sp = req->outstanding_cmds[handle];
1566                 req->outstanding_cmds[handle] = NULL;
1567         } else
1568                 sp = NULL;
1569
1570         if (sp == NULL) {
1571                 qla_printk(KERN_WARNING, ha,
1572                     "scsi(%ld): Invalid status handle (0x%x).\n", vha->host_no,
1573                     sts->handle);
1574
1575                 if (IS_QLA82XX(ha))
1576                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1577                 else
1578                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1579                 qla2xxx_wake_dpc(vha);
1580                 return;
1581         }
1582         cp = sp->cmd;
1583         if (cp == NULL) {
1584                 qla_printk(KERN_WARNING, ha,
1585                     "scsi(%ld): Command already returned (0x%x/%p).\n",
1586                     vha->host_no, sts->handle, sp);
1587
1588                 return;
1589         }
1590
1591         lscsi_status = scsi_status & STATUS_MASK;
1592
1593         fcport = sp->fcport;
1594
1595         ox_id = 0;
1596         sense_len = par_sense_len = rsp_info_len = resid_len =
1597             fw_resid_len = 0;
1598         if (IS_FWI2_CAPABLE(ha)) {
1599                 if (scsi_status & SS_SENSE_LEN_VALID)
1600                         sense_len = le32_to_cpu(sts24->sense_len);
1601                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1602                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1603                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1604                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1605                 if (comp_status == CS_DATA_UNDERRUN)
1606                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1607                 rsp_info = sts24->data;
1608                 sense_data = sts24->data;
1609                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1610                 ox_id = le16_to_cpu(sts24->ox_id);
1611                 par_sense_len = sizeof(sts24->data);
1612         } else {
1613                 if (scsi_status & SS_SENSE_LEN_VALID)
1614                         sense_len = le16_to_cpu(sts->req_sense_length);
1615                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1616                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1617                 resid_len = le32_to_cpu(sts->residual_length);
1618                 rsp_info = sts->rsp_info;
1619                 sense_data = sts->req_sense_data;
1620                 par_sense_len = sizeof(sts->req_sense_data);
1621         }
1622
1623         /* Check for any FCP transport errors. */
1624         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1625                 /* Sense data lies beyond any FCP RESPONSE data. */
1626                 if (IS_FWI2_CAPABLE(ha)) {
1627                         sense_data += rsp_info_len;
1628                         par_sense_len -= rsp_info_len;
1629                 }
1630                 if (rsp_info_len > 3 && rsp_info[3]) {
1631                         DEBUG2(qla_printk(KERN_INFO, ha,
1632                             "scsi(%ld:%d:%d): FCP I/O protocol failure "
1633                             "(0x%x/0x%x).\n", vha->host_no, cp->device->id,
1634                             cp->device->lun, rsp_info_len, rsp_info[3]));
1635
1636                         cp->result = DID_BUS_BUSY << 16;
1637                         goto out;
1638                 }
1639         }
1640
1641         /* Check for overrun. */
1642         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1643             scsi_status & SS_RESIDUAL_OVER)
1644                 comp_status = CS_DATA_OVERRUN;
1645
1646         /*
1647          * Based on Host and scsi status generate status code for Linux
1648          */
1649         switch (comp_status) {
1650         case CS_COMPLETE:
1651         case CS_QUEUE_FULL:
1652                 if (scsi_status == 0) {
1653                         cp->result = DID_OK << 16;
1654                         break;
1655                 }
1656                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1657                         resid = resid_len;
1658                         scsi_set_resid(cp, resid);
1659
1660                         if (!lscsi_status &&
1661                             ((unsigned)(scsi_bufflen(cp) - resid) <
1662                              cp->underflow)) {
1663                                 qla_printk(KERN_INFO, ha,
1664                                     "scsi(%ld:%d:%d): Mid-layer underflow "
1665                                     "detected (0x%x of 0x%x bytes).\n",
1666                                     vha->host_no, cp->device->id,
1667                                     cp->device->lun, resid, scsi_bufflen(cp));
1668
1669                                 cp->result = DID_ERROR << 16;
1670                                 break;
1671                         }
1672                 }
1673                 cp->result = DID_OK << 16 | lscsi_status;
1674
1675                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1676                         DEBUG2(qla_printk(KERN_INFO, ha,
1677                             "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1678                             vha->host_no, cp->device->id, cp->device->lun));
1679                         break;
1680                 }
1681                 logit = 0;
1682                 if (lscsi_status != SS_CHECK_CONDITION)
1683                         break;
1684
1685                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1686                 if (!(scsi_status & SS_SENSE_LEN_VALID))
1687                         break;
1688
1689                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
1690                     rsp);
1691                 break;
1692
1693         case CS_DATA_UNDERRUN:
1694                 /* Use F/W calculated residual length. */
1695                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1696                 scsi_set_resid(cp, resid);
1697                 if (scsi_status & SS_RESIDUAL_UNDER) {
1698                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1699                                 DEBUG2(qla_printk(KERN_INFO, ha,
1700                                     "scsi(%ld:%d:%d) Dropped frame(s) detected "
1701                                     "(0x%x of 0x%x bytes).\n", vha->host_no,
1702                                     cp->device->id, cp->device->lun, resid,
1703                                     scsi_bufflen(cp)));
1704
1705                                 cp->result = DID_ERROR << 16 | lscsi_status;
1706                                 break;
1707                         }
1708
1709                         if (!lscsi_status &&
1710                             ((unsigned)(scsi_bufflen(cp) - resid) <
1711                             cp->underflow)) {
1712                                 qla_printk(KERN_INFO, ha,
1713                                     "scsi(%ld:%d:%d): Mid-layer underflow "
1714                                     "detected (0x%x of 0x%x bytes).\n",
1715                                     vha->host_no, cp->device->id,
1716                                     cp->device->lun, resid, scsi_bufflen(cp));
1717
1718                                 cp->result = DID_ERROR << 16;
1719                                 break;
1720                         }
1721                 } else {
1722                         DEBUG2(qla_printk(KERN_INFO, ha,
1723                             "scsi(%ld:%d:%d) Dropped frame(s) detected (0x%x "
1724                             "of 0x%x bytes).\n", vha->host_no, cp->device->id,
1725                             cp->device->lun, resid, scsi_bufflen(cp)));
1726
1727                         cp->result = DID_ERROR << 16 | lscsi_status;
1728                         goto check_scsi_status;
1729                 }
1730
1731                 cp->result = DID_OK << 16 | lscsi_status;
1732                 logit = 0;
1733
1734 check_scsi_status:
1735                 /*
1736                  * Check to see if SCSI Status is non zero. If so report SCSI
1737                  * Status.
1738                  */
1739                 if (lscsi_status != 0) {
1740                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1741                                 DEBUG2(qla_printk(KERN_INFO, ha,
1742                                     "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1743                                     vha->host_no, cp->device->id,
1744                                     cp->device->lun));
1745                                 logit = 1;
1746                                 break;
1747                         }
1748                         if (lscsi_status != SS_CHECK_CONDITION)
1749                                 break;
1750
1751                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1752                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1753                                 break;
1754
1755                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
1756                             sense_len, rsp);
1757                 }
1758                 break;
1759
1760         case CS_PORT_LOGGED_OUT:
1761         case CS_PORT_CONFIG_CHG:
1762         case CS_PORT_BUSY:
1763         case CS_INCOMPLETE:
1764         case CS_PORT_UNAVAILABLE:
1765         case CS_TIMEOUT:
1766         case CS_RESET:
1767
1768                 /*
1769                  * We are going to have the fc class block the rport
1770                  * while we try to recover so instruct the mid layer
1771                  * to requeue until the class decides how to handle this.
1772                  */
1773                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1774
1775                 if (comp_status == CS_TIMEOUT) {
1776                         if (IS_FWI2_CAPABLE(ha))
1777                                 break;
1778                         else if ((le16_to_cpu(sts->status_flags) &
1779                             SF_LOGOUT_SENT) == 0)
1780                                 break;
1781                 }
1782
1783                 DEBUG2(qla_printk(KERN_INFO, ha,
1784                         "scsi(%ld:%d:%d) Port down status: port-state=0x%x\n",
1785                         vha->host_no, cp->device->id, cp->device->lun,
1786                         atomic_read(&fcport->state)));
1787
1788                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1789                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1790                 break;
1791
1792         case CS_ABORTED:
1793                 cp->result = DID_RESET << 16;
1794                 break;
1795
1796         case CS_DIF_ERROR:
1797                 qla2x00_handle_dif_error(sp, sts24);
1798                 break;
1799         default:
1800                 cp->result = DID_ERROR << 16;
1801                 break;
1802         }
1803
1804 out:
1805         if (logit)
1806                 DEBUG2(qla_printk(KERN_INFO, ha,
1807                     "scsi(%ld:%d:%d) FCP command status: 0x%x-0x%x (0x%x) "
1808                     "portid=%02x%02x%02x oxid=0x%x cdb=%02x%02x%02x len=0x%x "
1809                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x\n", vha->host_no,
1810                     cp->device->id, cp->device->lun, comp_status, scsi_status,
1811                     cp->result, fcport->d_id.b.domain, fcport->d_id.b.area,
1812                     fcport->d_id.b.al_pa, ox_id, cp->cmnd[0], cp->cmnd[1],
1813                     cp->cmnd[2], scsi_bufflen(cp), rsp_info_len, resid_len,
1814                     fw_resid_len));
1815
1816         if (rsp->status_srb == NULL)
1817                 qla2x00_sp_compl(ha, sp);
1818 }
1819
1820 /**
1821  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1822  * @ha: SCSI driver HA context
1823  * @pkt: Entry pointer
1824  *
1825  * Extended sense data.
1826  */
1827 static void
1828 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1829 {
1830         uint8_t         sense_sz = 0;
1831         struct qla_hw_data *ha = rsp->hw;
1832         srb_t           *sp = rsp->status_srb;
1833         struct scsi_cmnd *cp;
1834
1835         if (sp != NULL && sp->request_sense_length != 0) {
1836                 cp = sp->cmd;
1837                 if (cp == NULL) {
1838                         DEBUG2(printk("%s(): Cmd already returned back to OS "
1839                             "sp=%p.\n", __func__, sp));
1840                         qla_printk(KERN_INFO, ha,
1841                             "cmd is NULL: already returned to OS (sp=%p)\n",
1842                             sp);
1843
1844                         rsp->status_srb = NULL;
1845                         return;
1846                 }
1847
1848                 if (sp->request_sense_length > sizeof(pkt->data)) {
1849                         sense_sz = sizeof(pkt->data);
1850                 } else {
1851                         sense_sz = sp->request_sense_length;
1852                 }
1853
1854                 /* Move sense data. */
1855                 if (IS_FWI2_CAPABLE(ha))
1856                         host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1857                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1858                 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1859
1860                 sp->request_sense_ptr += sense_sz;
1861                 sp->request_sense_length -= sense_sz;
1862
1863                 /* Place command on done queue. */
1864                 if (sp->request_sense_length == 0) {
1865                         rsp->status_srb = NULL;
1866                         qla2x00_sp_compl(ha, sp);
1867                 }
1868         }
1869 }
1870
1871 /**
1872  * qla2x00_error_entry() - Process an error entry.
1873  * @ha: SCSI driver HA context
1874  * @pkt: Entry pointer
1875  */
1876 static void
1877 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1878 {
1879         srb_t *sp;
1880         struct qla_hw_data *ha = vha->hw;
1881         uint32_t handle = LSW(pkt->handle);
1882         uint16_t que = MSW(pkt->handle);
1883         struct req_que *req = ha->req_q_map[que];
1884 #if defined(QL_DEBUG_LEVEL_2)
1885         if (pkt->entry_status & RF_INV_E_ORDER)
1886                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1887         else if (pkt->entry_status & RF_INV_E_COUNT)
1888                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1889         else if (pkt->entry_status & RF_INV_E_PARAM)
1890                 qla_printk(KERN_ERR, ha,
1891                     "%s: Invalid Entry Parameter\n", __func__);
1892         else if (pkt->entry_status & RF_INV_E_TYPE)
1893                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1894         else if (pkt->entry_status & RF_BUSY)
1895                 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1896         else
1897                 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1898 #endif
1899
1900         /* Validate handle. */
1901         if (handle < MAX_OUTSTANDING_COMMANDS)
1902                 sp = req->outstanding_cmds[handle];
1903         else
1904                 sp = NULL;
1905
1906         if (sp) {
1907                 /* Free outstanding command slot. */
1908                 req->outstanding_cmds[handle] = NULL;
1909
1910                 /* Bad payload or header */
1911                 if (pkt->entry_status &
1912                     (RF_INV_E_ORDER | RF_INV_E_COUNT |
1913                      RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1914                         sp->cmd->result = DID_ERROR << 16;
1915                 } else if (pkt->entry_status & RF_BUSY) {
1916                         sp->cmd->result = DID_BUS_BUSY << 16;
1917                 } else {
1918                         sp->cmd->result = DID_ERROR << 16;
1919                 }
1920                 qla2x00_sp_compl(ha, sp);
1921
1922         } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1923                 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7
1924                 || pkt->entry_type == COMMAND_TYPE_6) {
1925                 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1926                         vha->host_no));
1927                 qla_printk(KERN_WARNING, ha,
1928                         "Error entry - invalid handle\n");
1929
1930                 if (IS_QLA82XX(ha))
1931                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1932                 else
1933                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1934                 qla2xxx_wake_dpc(vha);
1935         }
1936 }
1937
1938 /**
1939  * qla24xx_mbx_completion() - Process mailbox command completions.
1940  * @ha: SCSI driver HA context
1941  * @mb0: Mailbox0 register
1942  */
1943 static void
1944 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1945 {
1946         uint16_t        cnt;
1947         uint16_t __iomem *wptr;
1948         struct qla_hw_data *ha = vha->hw;
1949         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1950
1951         /* Load return mailbox registers. */
1952         ha->flags.mbox_int = 1;
1953         ha->mailbox_out[0] = mb0;
1954         wptr = (uint16_t __iomem *)&reg->mailbox1;
1955
1956         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1957                 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1958                 wptr++;
1959         }
1960
1961         if (ha->mcp) {
1962                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1963                     __func__, vha->host_no, ha->mcp->mb[0]));
1964         } else {
1965                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1966                     __func__, vha->host_no));
1967         }
1968 }
1969
1970 /**
1971  * qla24xx_process_response_queue() - Process response queue entries.
1972  * @ha: SCSI driver HA context
1973  */
1974 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1975         struct rsp_que *rsp)
1976 {
1977         struct sts_entry_24xx *pkt;
1978         struct qla_hw_data *ha = vha->hw;
1979
1980         if (!vha->flags.online)
1981                 return;
1982
1983         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1984                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1985
1986                 rsp->ring_index++;
1987                 if (rsp->ring_index == rsp->length) {
1988                         rsp->ring_index = 0;
1989                         rsp->ring_ptr = rsp->ring;
1990                 } else {
1991                         rsp->ring_ptr++;
1992                 }
1993
1994                 if (pkt->entry_status != 0) {
1995                         DEBUG3(printk(KERN_INFO
1996                             "scsi(%ld): Process error entry.\n", vha->host_no));
1997
1998                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1999                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2000                         wmb();
2001                         continue;
2002                 }
2003
2004                 switch (pkt->entry_type) {
2005                 case STATUS_TYPE:
2006                         qla2x00_status_entry(vha, rsp, pkt);
2007                         break;
2008                 case STATUS_CONT_TYPE:
2009                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2010                         break;
2011                 case VP_RPT_ID_IOCB_TYPE:
2012                         qla24xx_report_id_acquisition(vha,
2013                             (struct vp_rpt_id_entry_24xx *)pkt);
2014                         break;
2015                 case LOGINOUT_PORT_IOCB_TYPE:
2016                         qla24xx_logio_entry(vha, rsp->req,
2017                             (struct logio_entry_24xx *)pkt);
2018                         break;
2019                 case TSK_MGMT_IOCB_TYPE:
2020                         qla24xx_tm_iocb_entry(vha, rsp->req,
2021                             (struct tsk_mgmt_entry *)pkt);
2022                         break;
2023                 case CT_IOCB_TYPE:
2024                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2025                         clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
2026                         break;
2027                 case ELS_IOCB_TYPE:
2028                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2029                         break;
2030                 default:
2031                         /* Type Not Supported. */
2032                         DEBUG4(printk(KERN_WARNING
2033                             "scsi(%ld): Received unknown response pkt type %x "
2034                             "entry status=%x.\n",
2035                             vha->host_no, pkt->entry_type, pkt->entry_status));
2036                         break;
2037                 }
2038                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2039                 wmb();
2040         }
2041
2042         /* Adjust ring index */
2043         if (IS_QLA82XX(ha)) {
2044                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2045                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2046         } else
2047                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2048 }
2049
2050 static void
2051 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2052 {
2053         int rval;
2054         uint32_t cnt;
2055         struct qla_hw_data *ha = vha->hw;
2056         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2057
2058         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
2059                 return;
2060
2061         rval = QLA_SUCCESS;
2062         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2063         RD_REG_DWORD(&reg->iobase_addr);
2064         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2065         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2066             rval == QLA_SUCCESS; cnt--) {
2067                 if (cnt) {
2068                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2069                         udelay(10);
2070                 } else
2071                         rval = QLA_FUNCTION_TIMEOUT;
2072         }
2073         if (rval == QLA_SUCCESS)
2074                 goto next_test;
2075
2076         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2077         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2078             rval == QLA_SUCCESS; cnt--) {
2079                 if (cnt) {
2080                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2081                         udelay(10);
2082                 } else
2083                         rval = QLA_FUNCTION_TIMEOUT;
2084         }
2085         if (rval != QLA_SUCCESS)
2086                 goto done;
2087
2088 next_test:
2089         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2090                 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
2091
2092 done:
2093         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2094         RD_REG_DWORD(&reg->iobase_window);
2095 }
2096
2097 /**
2098  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
2099  * @irq:
2100  * @dev_id: SCSI driver HA context
2101  *
2102  * Called by system whenever the host adapter generates an interrupt.
2103  *
2104  * Returns handled flag.
2105  */
2106 irqreturn_t
2107 qla24xx_intr_handler(int irq, void *dev_id)
2108 {
2109         scsi_qla_host_t *vha;
2110         struct qla_hw_data *ha;
2111         struct device_reg_24xx __iomem *reg;
2112         int             status;
2113         unsigned long   iter;
2114         uint32_t        stat;
2115         uint32_t        hccr;
2116         uint16_t        mb[4];
2117         struct rsp_que *rsp;
2118         unsigned long   flags;
2119
2120         rsp = (struct rsp_que *) dev_id;
2121         if (!rsp) {
2122                 printk(KERN_INFO
2123                     "%s(): NULL response queue pointer\n", __func__);
2124                 return IRQ_NONE;
2125         }
2126
2127         ha = rsp->hw;
2128         reg = &ha->iobase->isp24;
2129         status = 0;
2130
2131         if (unlikely(pci_channel_offline(ha->pdev)))
2132                 return IRQ_HANDLED;
2133
2134         spin_lock_irqsave(&ha->hardware_lock, flags);
2135         vha = pci_get_drvdata(ha->pdev);
2136         for (iter = 50; iter--; ) {
2137                 stat = RD_REG_DWORD(&reg->host_status);
2138                 if (stat & HSRX_RISC_PAUSED) {
2139                         if (unlikely(pci_channel_offline(ha->pdev)))
2140                                 break;
2141
2142                         hccr = RD_REG_DWORD(&reg->hccr);
2143
2144                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2145                             "Dumping firmware!\n", hccr);
2146
2147                         qla2xxx_check_risc_status(vha);
2148
2149                         ha->isp_ops->fw_dump(vha, 1);
2150                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2151                         break;
2152                 } else if ((stat & HSRX_RISC_INT) == 0)
2153                         break;
2154
2155                 switch (stat & 0xff) {
2156                 case 0x1:
2157                 case 0x2:
2158                 case 0x10:
2159                 case 0x11:
2160                         qla24xx_mbx_completion(vha, MSW(stat));
2161                         status |= MBX_INTERRUPT;
2162
2163                         break;
2164                 case 0x12:
2165                         mb[0] = MSW(stat);
2166                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2167                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2168                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2169                         qla2x00_async_event(vha, rsp, mb);
2170                         break;
2171                 case 0x13:
2172                 case 0x14:
2173                         qla24xx_process_response_queue(vha, rsp);
2174                         break;
2175                 default:
2176                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2177                             "(%d).\n",
2178                             vha->host_no, stat & 0xff));
2179                         break;
2180                 }
2181                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2182                 RD_REG_DWORD_RELAXED(&reg->hccr);
2183         }
2184         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2185
2186         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2187             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2188                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2189                 complete(&ha->mbx_intr_comp);
2190         }
2191
2192         return IRQ_HANDLED;
2193 }
2194
2195 static irqreturn_t
2196 qla24xx_msix_rsp_q(int irq, void *dev_id)
2197 {
2198         struct qla_hw_data *ha;
2199         struct rsp_que *rsp;
2200         struct device_reg_24xx __iomem *reg;
2201         struct scsi_qla_host *vha;
2202         unsigned long flags;
2203
2204         rsp = (struct rsp_que *) dev_id;
2205         if (!rsp) {
2206                 printk(KERN_INFO
2207                 "%s(): NULL response queue pointer\n", __func__);
2208                 return IRQ_NONE;
2209         }
2210         ha = rsp->hw;
2211         reg = &ha->iobase->isp24;
2212
2213         spin_lock_irqsave(&ha->hardware_lock, flags);
2214
2215         vha = pci_get_drvdata(ha->pdev);
2216         qla24xx_process_response_queue(vha, rsp);
2217         if (!ha->flags.disable_msix_handshake) {
2218                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2219                 RD_REG_DWORD_RELAXED(&reg->hccr);
2220         }
2221         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2222
2223         return IRQ_HANDLED;
2224 }
2225
2226 static irqreturn_t
2227 qla25xx_msix_rsp_q(int irq, void *dev_id)
2228 {
2229         struct qla_hw_data *ha;
2230         struct rsp_que *rsp;
2231         struct device_reg_24xx __iomem *reg;
2232         unsigned long flags;
2233
2234         rsp = (struct rsp_que *) dev_id;
2235         if (!rsp) {
2236                 printk(KERN_INFO
2237                         "%s(): NULL response queue pointer\n", __func__);
2238                 return IRQ_NONE;
2239         }
2240         ha = rsp->hw;
2241
2242         /* Clear the interrupt, if enabled, for this response queue */
2243         if (rsp->options & ~BIT_6) {
2244                 reg = &ha->iobase->isp24;
2245                 spin_lock_irqsave(&ha->hardware_lock, flags);
2246                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2247                 RD_REG_DWORD_RELAXED(&reg->hccr);
2248                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2249         }
2250         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2251
2252         return IRQ_HANDLED;
2253 }
2254
2255 static irqreturn_t
2256 qla24xx_msix_default(int irq, void *dev_id)
2257 {
2258         scsi_qla_host_t *vha;
2259         struct qla_hw_data *ha;
2260         struct rsp_que *rsp;
2261         struct device_reg_24xx __iomem *reg;
2262         int             status;
2263         uint32_t        stat;
2264         uint32_t        hccr;
2265         uint16_t        mb[4];
2266         unsigned long flags;
2267
2268         rsp = (struct rsp_que *) dev_id;
2269         if (!rsp) {
2270                 DEBUG(printk(
2271                 "%s(): NULL response queue pointer\n", __func__));
2272                 return IRQ_NONE;
2273         }
2274         ha = rsp->hw;
2275         reg = &ha->iobase->isp24;
2276         status = 0;
2277
2278         spin_lock_irqsave(&ha->hardware_lock, flags);
2279         vha = pci_get_drvdata(ha->pdev);
2280         do {
2281                 stat = RD_REG_DWORD(&reg->host_status);
2282                 if (stat & HSRX_RISC_PAUSED) {
2283                         if (unlikely(pci_channel_offline(ha->pdev)))
2284                                 break;
2285
2286                         hccr = RD_REG_DWORD(&reg->hccr);
2287
2288                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2289                             "Dumping firmware!\n", hccr);
2290
2291                         qla2xxx_check_risc_status(vha);
2292
2293                         ha->isp_ops->fw_dump(vha, 1);
2294                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2295                         break;
2296                 } else if ((stat & HSRX_RISC_INT) == 0)
2297                         break;
2298
2299                 switch (stat & 0xff) {
2300                 case 0x1:
2301                 case 0x2:
2302                 case 0x10:
2303                 case 0x11:
2304                         qla24xx_mbx_completion(vha, MSW(stat));
2305                         status |= MBX_INTERRUPT;
2306
2307                         break;
2308                 case 0x12:
2309                         mb[0] = MSW(stat);
2310                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2311                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2312                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2313                         qla2x00_async_event(vha, rsp, mb);
2314                         break;
2315                 case 0x13:
2316                 case 0x14:
2317                         qla24xx_process_response_queue(vha, rsp);
2318                         break;
2319                 default:
2320                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2321                             "(%d).\n",
2322                             vha->host_no, stat & 0xff));
2323                         break;
2324                 }
2325                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2326         } while (0);
2327         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2328
2329         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2330             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2331                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2332                 complete(&ha->mbx_intr_comp);
2333         }
2334         return IRQ_HANDLED;
2335 }
2336
2337 /* Interrupt handling helpers. */
2338
2339 struct qla_init_msix_entry {
2340         const char *name;
2341         irq_handler_t handler;
2342 };
2343
2344 static struct qla_init_msix_entry msix_entries[3] = {
2345         { "qla2xxx (default)", qla24xx_msix_default },
2346         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2347         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2348 };
2349
2350 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2351         { "qla2xxx (default)", qla82xx_msix_default },
2352         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2353 };
2354
2355 static void
2356 qla24xx_disable_msix(struct qla_hw_data *ha)
2357 {
2358         int i;
2359         struct qla_msix_entry *qentry;
2360
2361         for (i = 0; i < ha->msix_count; i++) {
2362                 qentry = &ha->msix_entries[i];
2363                 if (qentry->have_irq)
2364                         free_irq(qentry->vector, qentry->rsp);
2365         }
2366         pci_disable_msix(ha->pdev);
2367         kfree(ha->msix_entries);
2368         ha->msix_entries = NULL;
2369         ha->flags.msix_enabled = 0;
2370 }
2371
2372 static int
2373 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2374 {
2375 #define MIN_MSIX_COUNT  2
2376         int i, ret;
2377         struct msix_entry *entries;
2378         struct qla_msix_entry *qentry;
2379
2380         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2381                         GFP_KERNEL);
2382         if (!entries)
2383                 return -ENOMEM;
2384
2385         for (i = 0; i < ha->msix_count; i++)
2386                 entries[i].entry = i;
2387
2388         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2389         if (ret) {
2390                 if (ret < MIN_MSIX_COUNT)
2391                         goto msix_failed;
2392
2393                 qla_printk(KERN_WARNING, ha,
2394                         "MSI-X: Failed to enable support -- %d/%d\n"
2395                         " Retry with %d vectors\n", ha->msix_count, ret, ret);
2396                 ha->msix_count = ret;
2397                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2398                 if (ret) {
2399 msix_failed:
2400                         qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2401                                 " support, giving up -- %d/%d\n",
2402                                 ha->msix_count, ret);
2403                         goto msix_out;
2404                 }
2405                 ha->max_rsp_queues = ha->msix_count - 1;
2406         }
2407         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2408                                 ha->msix_count, GFP_KERNEL);
2409         if (!ha->msix_entries) {
2410                 ret = -ENOMEM;
2411                 goto msix_out;
2412         }
2413         ha->flags.msix_enabled = 1;
2414
2415         for (i = 0; i < ha->msix_count; i++) {
2416                 qentry = &ha->msix_entries[i];
2417                 qentry->vector = entries[i].vector;
2418                 qentry->entry = entries[i].entry;
2419                 qentry->have_irq = 0;
2420                 qentry->rsp = NULL;
2421         }
2422
2423         /* Enable MSI-X vectors for the base queue */
2424         for (i = 0; i < 2; i++) {
2425                 qentry = &ha->msix_entries[i];
2426                 if (IS_QLA82XX(ha)) {
2427                         ret = request_irq(qentry->vector,
2428                                 qla82xx_msix_entries[i].handler,
2429                                 0, qla82xx_msix_entries[i].name, rsp);
2430                 } else {
2431                         ret = request_irq(qentry->vector,
2432                                 msix_entries[i].handler,
2433                                 0, msix_entries[i].name, rsp);
2434                 }
2435                 if (ret) {
2436                         qla_printk(KERN_WARNING, ha,
2437                         "MSI-X: Unable to register handler -- %x/%d.\n",
2438                         qentry->vector, ret);
2439                         qla24xx_disable_msix(ha);
2440                         ha->mqenable = 0;
2441                         goto msix_out;
2442                 }
2443                 qentry->have_irq = 1;
2444                 qentry->rsp = rsp;
2445                 rsp->msix = qentry;
2446         }
2447
2448         /* Enable MSI-X vector for response queue update for queue 0 */
2449         if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2450                 ha->mqenable = 1;
2451
2452 msix_out:
2453         kfree(entries);
2454         return ret;
2455 }
2456
2457 int
2458 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2459 {
2460         int ret;
2461         device_reg_t __iomem *reg = ha->iobase;
2462
2463         /* If possible, enable MSI-X. */
2464         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2465                 !IS_QLA8432(ha) && !IS_QLA8XXX_TYPE(ha))
2466                 goto skip_msi;
2467
2468         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2469                 (ha->pdev->subsystem_device == 0x7040 ||
2470                 ha->pdev->subsystem_device == 0x7041 ||
2471                 ha->pdev->subsystem_device == 0x1705)) {
2472                 DEBUG2(qla_printk(KERN_WARNING, ha,
2473                         "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X,0x%X).\n",
2474                         ha->pdev->subsystem_vendor,
2475                         ha->pdev->subsystem_device));
2476                 goto skip_msi;
2477         }
2478
2479         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2480                 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2481                 DEBUG2(qla_printk(KERN_WARNING, ha,
2482                 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2483                         ha->pdev->revision, ha->fw_attributes));
2484                 goto skip_msix;
2485         }
2486
2487         ret = qla24xx_enable_msix(ha, rsp);
2488         if (!ret) {
2489                 DEBUG2(qla_printk(KERN_INFO, ha,
2490                     "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2491                     ha->fw_attributes));
2492                 goto clear_risc_ints;
2493         }
2494         qla_printk(KERN_WARNING, ha,
2495             "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
2496 skip_msix:
2497
2498         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2499             !IS_QLA8001(ha))
2500                 goto skip_msi;
2501
2502         ret = pci_enable_msi(ha->pdev);
2503         if (!ret) {
2504                 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2505                 ha->flags.msi_enabled = 1;
2506         } else
2507                 qla_printk(KERN_WARNING, ha,
2508                     "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2509 skip_msi:
2510
2511         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2512             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2513             QLA2XXX_DRIVER_NAME, rsp);
2514         if (ret) {
2515                 qla_printk(KERN_WARNING, ha,
2516                     "Failed to reserve interrupt %d already in use.\n",
2517                     ha->pdev->irq);
2518                 goto fail;
2519         }
2520
2521 clear_risc_ints:
2522
2523         /*
2524          * FIXME: Noted that 8014s were being dropped during NK testing.
2525          * Timing deltas during MSI-X/INTa transitions?
2526          */
2527         if (IS_QLA81XX(ha) || IS_QLA82XX(ha))
2528                 goto fail;
2529         spin_lock_irq(&ha->hardware_lock);
2530         if (IS_FWI2_CAPABLE(ha)) {
2531                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2532                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2533         } else {
2534                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2535                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2536                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2537         }
2538         spin_unlock_irq(&ha->hardware_lock);
2539
2540 fail:
2541         return ret;
2542 }
2543
2544 void
2545 qla2x00_free_irqs(scsi_qla_host_t *vha)
2546 {
2547         struct qla_hw_data *ha = vha->hw;
2548         struct rsp_que *rsp = ha->rsp_q_map[0];
2549
2550         if (ha->flags.msix_enabled)
2551                 qla24xx_disable_msix(ha);
2552         else if (ha->flags.msi_enabled) {
2553                 free_irq(ha->pdev->irq, rsp);
2554                 pci_disable_msi(ha->pdev);
2555         } else
2556                 free_irq(ha->pdev->irq, rsp);
2557 }
2558
2559
2560 int qla25xx_request_irq(struct rsp_que *rsp)
2561 {
2562         struct qla_hw_data *ha = rsp->hw;
2563         struct qla_init_msix_entry *intr = &msix_entries[2];
2564         struct qla_msix_entry *msix = rsp->msix;
2565         int ret;
2566
2567         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2568         if (ret) {
2569                 qla_printk(KERN_WARNING, ha,
2570                         "MSI-X: Unable to register handler -- %x/%d.\n",
2571                         msix->vector, ret);
2572                 return ret;
2573         }
2574         msix->have_irq = 1;
2575         msix->rsp = rsp;
2576         return ret;
2577 }