drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2008 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 <scsi/scsi_tcq.h>
  11
  12 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  13 static void qla2x00_process_completed_request(struct scsi_qla_host *,
  14         struct req_que *, uint32_t);
  15 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  16 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  17 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  18         sts_entry_t *);
  19
  20 /**
  21  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  22  * @irq:
  23  * @dev_id: SCSI driver HA context
  24  *
  25  * Called by system whenever the host adapter generates an interrupt.
  26  *
  27  * Returns handled flag.
  28  */
  29 irqreturn_t
  30 qla2100_intr_handler(int irq, void *dev_id)
  31 {
  32         scsi_qla_host_t *vha;
  33         struct qla_hw_data *ha;
  34         struct device_reg_2xxx __iomem *reg;
  35         int             status;
  36         unsigned long   iter;
  37         uint16_t        hccr;
  38         uint16_t        mb[4];
  39         struct rsp_que *rsp;
  40         unsigned long   flags;
  41
  42         rsp = (struct rsp_que *) dev_id;
  43         if (!rsp) {
  44                 printk(KERN_INFO
  45                     "%s(): NULL response queue pointer\n", __func__);
  46                 return (IRQ_NONE);
  47         }
  48
  49         ha = rsp->hw;
  50         reg = &ha->iobase->isp;
  51         status = 0;
  52
  53         spin_lock_irqsave(&ha->hardware_lock, flags);
  54         vha = pci_get_drvdata(ha->pdev);
  55         for (iter = 50; iter--; ) {
  56                 hccr = RD_REG_WORD(&reg->hccr);
  57                 if (hccr & HCCR_RISC_PAUSE) {
  58                         if (pci_channel_offline(ha->pdev))
  59                                 break;
  60
  61                         /*
  62                          * Issue a "HARD" reset in order for the RISC interrupt
  63                          * bit to be cleared.  Schedule a big hammmer to get
  64                          * out of the RISC PAUSED state.
  65                          */
  66                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  67                         RD_REG_WORD(&reg->hccr);
  68
  69                         ha->isp_ops->fw_dump(vha, 1);
  70                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  71                         break;
  72                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  73                         break;
  74
  75                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  76                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  77                         RD_REG_WORD(&reg->hccr);
  78
  79                         /* Get mailbox data. */
  80                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  81                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  82                                 qla2x00_mbx_completion(vha, mb[0]);
  83                                 status |= MBX_INTERRUPT;
  84                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  85                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  86                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  87                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  88                                 qla2x00_async_event(vha, rsp, mb);
  89                         } else {
  90                                 /*EMPTY*/
  91                                 DEBUG2(printk("scsi(%ld): Unrecognized "
  92                                     "interrupt type (%d).\n",
  93                                     vha->host_no, mb[0]));
  94                         }
  95                         /* Release mailbox registers. */
  96                         WRT_REG_WORD(&reg->semaphore, 0);
  97                         RD_REG_WORD(&reg->semaphore);
  98                 } else {
  99                         qla2x00_process_response_queue(rsp);
 100
 101                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 102                         RD_REG_WORD(&reg->hccr);
 103                 }
 104         }
 105         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 106
 107         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 108             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 109                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 110                 complete(&ha->mbx_intr_comp);
 111         }
 112
 113         return (IRQ_HANDLED);
 114 }
 115
 116 /**
 117  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 118  * @irq:
 119  * @dev_id: SCSI driver HA context
 120  *
 121  * Called by system whenever the host adapter generates an interrupt.
 122  *
 123  * Returns handled flag.
 124  */
 125 irqreturn_t
 126 qla2300_intr_handler(int irq, void *dev_id)
 127 {
 128         scsi_qla_host_t *vha;
 129         struct device_reg_2xxx __iomem *reg;
 130         int             status;
 131         unsigned long   iter;
 132         uint32_t        stat;
 133         uint16_t        hccr;
 134         uint16_t        mb[4];
 135         struct rsp_que *rsp;
 136         struct qla_hw_data *ha;
 137         unsigned long   flags;
 138
 139         rsp = (struct rsp_que *) dev_id;
 140         if (!rsp) {
 141                 printk(KERN_INFO
 142                     "%s(): NULL response queue pointer\n", __func__);
 143                 return (IRQ_NONE);
 144         }
 145
 146         ha = rsp->hw;
 147         reg = &ha->iobase->isp;
 148         status = 0;
 149
 150         spin_lock_irqsave(&ha->hardware_lock, flags);
 151         vha = pci_get_drvdata(ha->pdev);
 152         for (iter = 50; iter--; ) {
 153                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 154                 if (stat & HSR_RISC_PAUSED) {
 155                         if (pci_channel_offline(ha->pdev))
 156                                 break;
 157
 158                         hccr = RD_REG_WORD(&reg->hccr);
 159                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 160                                 qla_printk(KERN_INFO, ha, "Parity error -- "
 161                                     "HCCR=%x, Dumping firmware!\n", hccr);
 162                         else
 163                                 qla_printk(KERN_INFO, ha, "RISC paused -- "
 164                                     "HCCR=%x, Dumping firmware!\n", hccr);
 165
 166                         /*
 167                          * Issue a "HARD" reset in order for the RISC
 168                          * interrupt bit to be cleared.  Schedule a big
 169                          * hammmer to get out of the RISC PAUSED state.
 170                          */
 171                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 172                         RD_REG_WORD(&reg->hccr);
 173
 174                         ha->isp_ops->fw_dump(vha, 1);
 175                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 176                         break;
 177                 } else if ((stat & HSR_RISC_INT) == 0)
 178                         break;
 179
 180                 switch (stat & 0xff) {
 181                 case 0x1:
 182                 case 0x2:
 183                 case 0x10:
 184                 case 0x11:
 185                         qla2x00_mbx_completion(vha, MSW(stat));
 186                         status |= MBX_INTERRUPT;
 187
 188                         /* Release mailbox registers. */
 189                         WRT_REG_WORD(&reg->semaphore, 0);
 190                         break;
 191                 case 0x12:
 192                         mb[0] = MSW(stat);
 193                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 194                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 195                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 196                         qla2x00_async_event(vha, rsp, mb);
 197                         break;
 198                 case 0x13:
 199                         qla2x00_process_response_queue(rsp);
 200                         break;
 201                 case 0x15:
 202                         mb[0] = MBA_CMPLT_1_16BIT;
 203                         mb[1] = MSW(stat);
 204                         qla2x00_async_event(vha, rsp, mb);
 205                         break;
 206                 case 0x16:
 207                         mb[0] = MBA_SCSI_COMPLETION;
 208                         mb[1] = MSW(stat);
 209                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 210                         qla2x00_async_event(vha, rsp, mb);
 211                         break;
 212                 default:
 213                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
 214                             "(%d).\n",
 215                             vha->host_no, stat & 0xff));
 216                         break;
 217                 }
 218                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 219                 RD_REG_WORD_RELAXED(&reg->hccr);
 220         }
 221         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 222
 223         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 224             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 225                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 226                 complete(&ha->mbx_intr_comp);
 227         }
 228
 229         return (IRQ_HANDLED);
 230 }
 231
 232 /**
 233  * qla2x00_mbx_completion() - Process mailbox command completions.
 234  * @ha: SCSI driver HA context
 235  * @mb0: Mailbox0 register
 236  */
 237 static void
 238 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 239 {
 240         uint16_t        cnt;
 241         uint16_t __iomem *wptr;
 242         struct qla_hw_data *ha = vha->hw;
 243         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 244
 245         /* Load return mailbox registers. */
 246         ha->flags.mbox_int = 1;
 247         ha->mailbox_out[0] = mb0;
 248         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 249
 250         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 251                 if (IS_QLA2200(ha) && cnt == 8)
 252                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 253                 if (cnt == 4 || cnt == 5)
 254                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 255                 else
 256                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 257
 258                 wptr++;
 259         }
 260
 261         if (ha->mcp) {
 262                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
 263                     __func__, vha->host_no, ha->mcp->mb[0]));
 264         } else {
 265                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
 266                     __func__, vha->host_no));
 267         }
 268 }
 269
 270 static void
 271 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 272 {
 273         static char *event[] =
 274                 { "Complete", "Request Notification", "Time Extension" };
 275         int rval;
 276         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 277         uint16_t __iomem *wptr;
 278         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 279
 280         /* Seed data -- mailbox1 -> mailbox7. */
 281         wptr = (uint16_t __iomem *)&reg24->mailbox1;
 282         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 283                 mb[cnt] = RD_REG_WORD(wptr);
 284
 285         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 286             "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
 287             event[aen & 0xff],
 288             mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
 289
 290         /* Acknowledgement needed? [Notify && non-zero timeout]. */
 291         timeout = (descr >> 8) & 0xf;
 292         if (aen != MBA_IDC_NOTIFY || !timeout)
 293                 return;
 294
 295         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 296             "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
 297
 298         rval = qla2x00_post_idc_ack_work(vha, mb);
 299         if (rval != QLA_SUCCESS)
 300                 qla_printk(KERN_WARNING, vha->hw,
 301                     "IDC failed to post ACK.\n");
 302 }
 303
 304 /**
 305  * qla2x00_async_event() - Process aynchronous events.
 306  * @ha: SCSI driver HA context
 307  * @mb: Mailbox registers (0 - 3)
 308  */
 309 void
 310 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 311 {
 312 #define LS_UNKNOWN      2
 313         static char     *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
 314         char            *link_speed;
 315         uint16_t        handle_cnt;
 316         uint16_t        cnt, mbx;
 317         uint32_t        handles[5];
 318         struct qla_hw_data *ha = vha->hw;
 319         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 320         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 321         uint32_t        rscn_entry, host_pid;
 322         uint8_t         rscn_queue_index;
 323         unsigned long   flags;
 324
 325         /* Setup to process RIO completion. */
 326         handle_cnt = 0;
 327         if (IS_QLA81XX(ha))
 328                 goto skip_rio;
 329         switch (mb[0]) {
 330         case MBA_SCSI_COMPLETION:
 331                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 332                 handle_cnt = 1;
 333                 break;
 334         case MBA_CMPLT_1_16BIT:
 335                 handles[0] = mb[1];
 336                 handle_cnt = 1;
 337                 mb[0] = MBA_SCSI_COMPLETION;
 338                 break;
 339         case MBA_CMPLT_2_16BIT:
 340                 handles[0] = mb[1];
 341                 handles[1] = mb[2];
 342                 handle_cnt = 2;
 343                 mb[0] = MBA_SCSI_COMPLETION;
 344                 break;
 345         case MBA_CMPLT_3_16BIT:
 346                 handles[0] = mb[1];
 347                 handles[1] = mb[2];
 348                 handles[2] = mb[3];
 349                 handle_cnt = 3;
 350                 mb[0] = MBA_SCSI_COMPLETION;
 351                 break;
 352         case MBA_CMPLT_4_16BIT:
 353                 handles[0] = mb[1];
 354                 handles[1] = mb[2];
 355                 handles[2] = mb[3];
 356                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 357                 handle_cnt = 4;
 358                 mb[0] = MBA_SCSI_COMPLETION;
 359                 break;
 360         case MBA_CMPLT_5_16BIT:
 361                 handles[0] = mb[1];
 362                 handles[1] = mb[2];
 363                 handles[2] = mb[3];
 364                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 365                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 366                 handle_cnt = 5;
 367                 mb[0] = MBA_SCSI_COMPLETION;
 368                 break;
 369         case MBA_CMPLT_2_32BIT:
 370                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 371                 handles[1] = le32_to_cpu(
 372                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 373                     RD_MAILBOX_REG(ha, reg, 6));
 374                 handle_cnt = 2;
 375                 mb[0] = MBA_SCSI_COMPLETION;
 376                 break;
 377         default:
 378                 break;
 379         }
 380 skip_rio:
 381         switch (mb[0]) {
 382         case MBA_SCSI_COMPLETION:       /* Fast Post */
 383                 if (!vha->flags.online)
 384                         break;
 385
 386                 for (cnt = 0; cnt < handle_cnt; cnt++)
 387                         qla2x00_process_completed_request(vha, rsp->req,
 388                                 handles[cnt]);
 389                 break;
 390
 391         case MBA_RESET:                 /* Reset */
 392                 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
 393                         vha->host_no));
 394
 395                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 396                 break;
 397
 398         case MBA_SYSTEM_ERR:            /* System Error */
 399                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
 400                 qla_printk(KERN_INFO, ha,
 401                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 402                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 403
 404                 ha->isp_ops->fw_dump(vha, 1);
 405
 406                 if (IS_FWI2_CAPABLE(ha)) {
 407                         if (mb[1] == 0 && mb[2] == 0) {
 408                                 qla_printk(KERN_ERR, ha,
 409                                     "Unrecoverable Hardware Error: adapter "
 410                                     "marked OFFLINE!\n");
 411                                 vha->flags.online = 0;
 412                         } else
 413                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 414                 } else if (mb[1] == 0) {
 415                         qla_printk(KERN_INFO, ha,
 416                             "Unrecoverable Hardware Error: adapter marked "
 417                             "OFFLINE!\n");
 418                         vha->flags.online = 0;
 419                 } else
 420                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 421                 break;
 422
 423         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 424                 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
 425                     vha->host_no, mb[1]));
 426                 qla_printk(KERN_WARNING, ha,
 427                     "ISP Request Transfer Error (%x).\n", mb[1]);
 428
 429                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 430                 break;
 431
 432         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 433                 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
 434                     vha->host_no));
 435                 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
 436
 437                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 438                 break;
 439
 440         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 441                 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
 442                     vha->host_no));
 443                 break;
 444
 445         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 446                 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
 447                     mb[1]));
 448                 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
 449
 450                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 451                         atomic_set(&vha->loop_state, LOOP_DOWN);
 452                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 453                         qla2x00_mark_all_devices_lost(vha, 1);
 454                 }
 455
 456                 if (vha->vp_idx) {
 457                         atomic_set(&vha->vp_state, VP_FAILED);
 458                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 459                 }
 460
 461                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 462                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 463
 464                 vha->flags.management_server_logged_in = 0;
 465                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 466                 break;
 467
 468         case MBA_LOOP_UP:               /* Loop Up Event */
 469                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 470                         link_speed = link_speeds[0];
 471                         ha->link_data_rate = PORT_SPEED_1GB;
 472                 } else {
 473                         link_speed = link_speeds[LS_UNKNOWN];
 474                         if (mb[1] < 5)
 475                                 link_speed = link_speeds[mb[1]];
 476                         else if (mb[1] == 0x13)
 477                                 link_speed = link_speeds[5];
 478                         ha->link_data_rate = mb[1];
 479                 }
 480
 481                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
 482                     vha->host_no, link_speed));
 483                 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
 484                     link_speed);
 485
 486                 vha->flags.management_server_logged_in = 0;
 487                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 488                 break;
 489
 490         case MBA_LOOP_DOWN:             /* Loop Down Event */
 491                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
 492                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
 493                     "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
 494                     mbx));
 495                 qla_printk(KERN_INFO, ha,
 496                     "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
 497                     mbx);
 498
 499                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 500                         atomic_set(&vha->loop_state, LOOP_DOWN);
 501                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 502                         vha->device_flags |= DFLG_NO_CABLE;
 503                         qla2x00_mark_all_devices_lost(vha, 1);
 504                 }
 505
 506                 if (vha->vp_idx) {
 507                         atomic_set(&vha->vp_state, VP_FAILED);
 508                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 509                 }
 510
 511                 vha->flags.management_server_logged_in = 0;
 512                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 513                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 514                 break;
 515
 516         case MBA_LIP_RESET:             /* LIP reset occurred */
 517                 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
 518                     vha->host_no, mb[1]));
 519                 qla_printk(KERN_INFO, ha,
 520                     "LIP reset occurred (%x).\n", mb[1]);
 521
 522                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 523                         atomic_set(&vha->loop_state, LOOP_DOWN);
 524                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 525                         qla2x00_mark_all_devices_lost(vha, 1);
 526                 }
 527
 528                 if (vha->vp_idx) {
 529                         atomic_set(&vha->vp_state, VP_FAILED);
 530                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 531                 }
 532
 533                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 534
 535                 ha->operating_mode = LOOP;
 536                 vha->flags.management_server_logged_in = 0;
 537                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 538                 break;
 539
 540         /* case MBA_DCBX_COMPLETE: */
 541         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 542                 if (IS_QLA2100(ha))
 543                         break;
 544
 545                 if (IS_QLA81XX(ha))
 546                         DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
 547                             "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 548                 else
 549                         DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
 550                             "received.\n", vha->host_no));
 551
 552                 /*
 553                  * Until there's a transition from loop down to loop up, treat
 554                  * this as loop down only.
 555                  */
 556                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 557                         atomic_set(&vha->loop_state, LOOP_DOWN);
 558                         if (!atomic_read(&vha->loop_down_timer))
 559                                 atomic_set(&vha->loop_down_timer,
 560                                     LOOP_DOWN_TIME);
 561                         qla2x00_mark_all_devices_lost(vha, 1);
 562                 }
 563
 564                 if (vha->vp_idx) {
 565                         atomic_set(&vha->vp_state, VP_FAILED);
 566                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 567                 }
 568
 569                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 570                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 571
 572                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 573                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 574
 575                 ha->flags.gpsc_supported = 1;
 576                 vha->flags.management_server_logged_in = 0;
 577                 break;
 578
 579         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 580                 if (IS_QLA2100(ha))
 581                         break;
 582
 583                 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
 584                     "received.\n",
 585                     vha->host_no));
 586                 qla_printk(KERN_INFO, ha,
 587                     "Configuration change detected: value=%x.\n", mb[1]);
 588
 589                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 590                         atomic_set(&vha->loop_state, LOOP_DOWN);
 591                         if (!atomic_read(&vha->loop_down_timer))
 592                                 atomic_set(&vha->loop_down_timer,
 593                                     LOOP_DOWN_TIME);
 594                         qla2x00_mark_all_devices_lost(vha, 1);
 595                 }
 596
 597                 if (vha->vp_idx) {
 598                         atomic_set(&vha->vp_state, VP_FAILED);
 599                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 600                 }
 601
 602                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 603                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 604                 break;
 605
 606         case MBA_PORT_UPDATE:           /* Port database update */
 607                 /*
 608                  * Handle only global and vn-port update events
 609                  *
 610                  * Relevant inputs:
 611                  * mb[1] = N_Port handle of changed port
 612                  * OR 0xffff for global event
 613                  * mb[2] = New login state
 614                  * 7 = Port logged out
 615                  * mb[3] = LSB is vp_idx, 0xff = all vps
 616                  *
 617                  * Skip processing if:
 618                  *       Event is global, vp_idx is NOT all vps,
 619                  *           vp_idx does not match
 620                  *       Event is not global, vp_idx does not match
 621                  */
 622                 if ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff)
 623                         || (mb[1] != 0xffff)) {
 624                         if (vha->vp_idx != (mb[3] & 0xff))
 625                                 break;
 626                 }
 627
 628                 /* Global event -- port logout or port unavailable. */
 629                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 630                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 631                             vha->host_no));
 632                         DEBUG(printk(KERN_INFO
 633                             "scsi(%ld): Port unavailable %04x %04x %04x.\n",
 634                             vha->host_no, mb[1], mb[2], mb[3]));
 635
 636                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 637                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 638                                 atomic_set(&vha->loop_down_timer,
 639                                     LOOP_DOWN_TIME);
 640                                 vha->device_flags |= DFLG_NO_CABLE;
 641                                 qla2x00_mark_all_devices_lost(vha, 1);
 642                         }
 643
 644                         if (vha->vp_idx) {
 645                                 atomic_set(&vha->vp_state, VP_FAILED);
 646                                 fc_vport_set_state(vha->fc_vport,
 647                                     FC_VPORT_FAILED);
 648                                 qla2x00_mark_all_devices_lost(vha, 1);
 649                         }
 650
 651                         vha->flags.management_server_logged_in = 0;
 652                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 653                         break;
 654                 }
 655
 656                 /*
 657                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 658                  * event etc. earlier indicating loop is down) then process
 659                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 660                  */
 661                 atomic_set(&vha->loop_down_timer, 0);
 662                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 663                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 664                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
 665                             "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
 666                             mb[2], mb[3]));
 667                         break;
 668                 }
 669
 670                 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 671                     vha->host_no));
 672                 DEBUG(printk(KERN_INFO
 673                     "scsi(%ld): Port database changed %04x %04x %04x.\n",
 674                     vha->host_no, mb[1], mb[2], mb[3]));
 675
 676                 /*
 677                  * Mark all devices as missing so we will login again.
 678                  */
 679                 atomic_set(&vha->loop_state, LOOP_UP);
 680
 681                 qla2x00_mark_all_devices_lost(vha, 1);
 682
 683                 vha->flags.rscn_queue_overflow = 1;
 684
 685                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 686                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 687                 break;
 688
 689         case MBA_RSCN_UPDATE:           /* State Change Registration */
 690                 /* Check if the Vport has issued a SCR */
 691                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 692                         break;
 693                 /* Only handle SCNs for our Vport index. */
 694                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 695                         break;
 696
 697                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
 698                     vha->host_no));
 699                 DEBUG(printk(KERN_INFO
 700                     "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
 701                     vha->host_no, mb[1], mb[2], mb[3]));
 702
 703                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 704                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 705                                 | vha->d_id.b.al_pa;
 706                 if (rscn_entry == host_pid) {
 707                         DEBUG(printk(KERN_INFO
 708                             "scsi(%ld): Ignoring RSCN update to local host "
 709                             "port ID (%06x)\n",
 710                             vha->host_no, host_pid));
 711                         break;
 712                 }
 713
 714                 /* Ignore reserved bits from RSCN-payload. */
 715                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 716                 rscn_queue_index = vha->rscn_in_ptr + 1;
 717                 if (rscn_queue_index == MAX_RSCN_COUNT)
 718                         rscn_queue_index = 0;
 719                 if (rscn_queue_index != vha->rscn_out_ptr) {
 720                         vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
 721                         vha->rscn_in_ptr = rscn_queue_index;
 722                 } else {
 723                         vha->flags.rscn_queue_overflow = 1;
 724                 }
 725
 726                 atomic_set(&vha->loop_state, LOOP_UPDATE);
 727                 atomic_set(&vha->loop_down_timer, 0);
 728                 vha->flags.management_server_logged_in = 0;
 729
 730                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 731                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 732                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 733                 break;
 734
 735         /* case MBA_RIO_RESPONSE: */
 736         case MBA_ZIO_RESPONSE:
 737                 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
 738                     vha->host_no));
 739
 740                 if (IS_FWI2_CAPABLE(ha))
 741                         qla24xx_process_response_queue(vha, rsp);
 742                 else
 743                         qla2x00_process_response_queue(rsp);
 744                 break;
 745
 746         case MBA_DISCARD_RND_FRAME:
 747                 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
 748                     "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
 749                 break;
 750
 751         case MBA_TRACE_NOTIFICATION:
 752                 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
 753                 vha->host_no, mb[1], mb[2]));
 754                 break;
 755
 756         case MBA_ISP84XX_ALERT:
 757                 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
 758                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 759
 760                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 761                 switch (mb[1]) {
 762                 case A84_PANIC_RECOVERY:
 763                         qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
 764                             "%04x %04x\n", mb[2], mb[3]);
 765                         break;
 766                 case A84_OP_LOGIN_COMPLETE:
 767                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 768                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 769                             "firmware version %x\n", ha->cs84xx->op_fw_version));
 770                         break;
 771                 case A84_DIAG_LOGIN_COMPLETE:
 772                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 773                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 774                             "diagnostic firmware version %x\n",
 775                             ha->cs84xx->diag_fw_version));
 776                         break;
 777                 case A84_GOLD_LOGIN_COMPLETE:
 778                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 779                         ha->cs84xx->fw_update = 1;
 780                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
 781                             "firmware version %x\n",
 782                             ha->cs84xx->gold_fw_version));
 783                         break;
 784                 default:
 785                         qla_printk(KERN_ERR, ha,
 786                             "Alert 84xx: Invalid Alert %04x %04x %04x\n",
 787                             mb[1], mb[2], mb[3]);
 788                 }
 789                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
 790                 break;
 791         case MBA_DCBX_START:
 792                 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
 793                     vha->host_no, mb[1], mb[2], mb[3]));
 794                 break;
 795         case MBA_DCBX_PARAM_UPDATE:
 796                 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
 797                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 798                 break;
 799         case MBA_FCF_CONF_ERR:
 800                 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
 801                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 802                 break;
 803         case MBA_IDC_COMPLETE:
 804         case MBA_IDC_NOTIFY:
 805         case MBA_IDC_TIME_EXT:
 806                 qla81xx_idc_event(vha, mb[0], mb[1]);
 807                 break;
 808         }
 809
 810         if (!vha->vp_idx && ha->num_vhosts)
 811                 qla2x00_alert_all_vps(rsp, mb);
 812 }
 813
 814 /**
 815  * qla2x00_process_completed_request() - Process a Fast Post response.
 816  * @ha: SCSI driver HA context
 817  * @index: SRB index
 818  */
 819 static void
 820 qla2x00_process_completed_request(struct scsi_qla_host *vha,
 821                                 struct req_que *req, uint32_t index)
 822 {
 823         srb_t *sp;
 824         struct qla_hw_data *ha = vha->hw;
 825
 826         /* Validate handle. */
 827         if (index >= MAX_OUTSTANDING_COMMANDS) {
 828                 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
 829                     vha->host_no, index));
 830                 qla_printk(KERN_WARNING, ha,
 831                     "Invalid SCSI completion handle %d.\n", index);
 832
 833                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 834                 return;
 835         }
 836
 837         sp = req->outstanding_cmds[index];
 838         if (sp) {
 839                 /* Free outstanding command slot. */
 840                 req->outstanding_cmds[index] = NULL;
 841
 842                 /* Save ISP completion status */
 843                 sp->cmd->result = DID_OK << 16;
 844                 qla2x00_sp_compl(ha, sp);
 845         } else {
 846                 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
 847                         " handle(%d)\n", vha->host_no, req->id, index));
 848                 qla_printk(KERN_WARNING, ha,
 849                     "Invalid ISP SCSI completion handle\n");
 850
 851                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 852         }
 853 }
 854
 855 static srb_t *
 856 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 857     struct req_que *req, void *iocb)
 858 {
 859         struct qla_hw_data *ha = vha->hw;
 860         sts_entry_t *pkt = iocb;
 861         srb_t *sp = NULL;
 862         uint16_t index;
 863
 864         index = LSW(pkt->handle);
 865         if (index >= MAX_OUTSTANDING_COMMANDS) {
 866                 qla_printk(KERN_WARNING, ha,
 867                     "%s: Invalid completion handle (%x).\n", func, index);
 868                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 869                 goto done;
 870         }
 871         sp = req->outstanding_cmds[index];
 872         if (!sp) {
 873                 qla_printk(KERN_WARNING, ha,
 874                     "%s: Invalid completion handle (%x) -- timed-out.\n", func,
 875                     index);
 876                 return sp;
 877         }
 878         if (sp->handle != index) {
 879                 qla_printk(KERN_WARNING, ha,
 880                     "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
 881                     index);
 882                 return NULL;
 883         }
 884         req->outstanding_cmds[index] = NULL;
 885 done:
 886         return sp;
 887 }
 888
 889 static void
 890 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
 891     struct mbx_entry *mbx)
 892 {
 893         const char func[] = "MBX-IOCB";
 894         const char *type;
 895         struct qla_hw_data *ha = vha->hw;
 896         fc_port_t *fcport;
 897         srb_t *sp;
 898         struct srb_logio *lio;
 899         uint16_t data[2];
 900
 901         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
 902         if (!sp)
 903                 return;
 904
 905         type = NULL;
 906         lio = sp->ctx;
 907         switch (lio->ctx.type) {
 908         case SRB_LOGIN_CMD:
 909                 type = "login";
 910                 break;
 911         case SRB_LOGOUT_CMD:
 912                 type = "logout";
 913                 break;
 914         default:
 915                 qla_printk(KERN_WARNING, ha,
 916                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
 917                     lio->ctx.type);
 918                 return;
 919         }
 920
 921         del_timer(&lio->ctx.timer);
 922         fcport = sp->fcport;
 923
 924         data[0] = data[1] = 0;
 925         if (mbx->entry_status) {
 926                 DEBUG2(printk(KERN_WARNING
 927                     "scsi(%ld:%x): Async-%s error entry - entry-status=%x "
 928                     "status=%x state-flag=%x status-flags=%x.\n",
 929                     fcport->vha->host_no, sp->handle, type,
 930                     mbx->entry_status, le16_to_cpu(mbx->status),
 931                     le16_to_cpu(mbx->state_flags),
 932                     le16_to_cpu(mbx->status_flags)));
 933                 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
 934
 935                 data[0] = MBS_COMMAND_ERROR;
 936                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
 937                     QLA_LOGIO_LOGIN_RETRIED: 0;
 938                 goto done_post_logio_done_work;
 939         }
 940
 941         if (!mbx->status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
 942                 DEBUG2(printk(KERN_DEBUG
 943                     "scsi(%ld:%x): Async-%s complete - mbx1=%x.\n",
 944                     fcport->vha->host_no, sp->handle, type,
 945                     le16_to_cpu(mbx->mb1)));
 946
 947                 data[0] = MBS_COMMAND_COMPLETE;
 948                 if (lio->ctx.type == SRB_LOGIN_CMD && le16_to_cpu(mbx->mb1) & BIT_1)
 949                         fcport->flags |= FCF_FCP2_DEVICE;
 950
 951                 goto done_post_logio_done_work;
 952         }
 953
 954         data[0] = le16_to_cpu(mbx->mb0);
 955         switch (data[0]) {
 956         case MBS_PORT_ID_USED:
 957                 data[1] = le16_to_cpu(mbx->mb1);
 958                 break;
 959         case MBS_LOOP_ID_USED:
 960                 break;
 961         default:
 962                 data[0] = MBS_COMMAND_ERROR;
 963                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
 964                     QLA_LOGIO_LOGIN_RETRIED: 0;
 965                 break;
 966         }
 967
 968         DEBUG2(printk(KERN_WARNING
 969             "scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x "
 970             "mb6=%x mb7=%x.\n",
 971             fcport->vha->host_no, sp->handle, type, le16_to_cpu(mbx->status),
 972             le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
 973             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
 974             le16_to_cpu(mbx->mb7)));
 975
 976 done_post_logio_done_work:
 977         lio->ctx.type == SRB_LOGIN_CMD ?
 978             qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
 979             qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
 980
 981         lio->ctx.free(sp);
 982 }
 983
 984 static void
 985 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
 986     struct logio_entry_24xx *logio)
 987 {
 988         const char func[] = "LOGIO-IOCB";
 989         const char *type;
 990         struct qla_hw_data *ha = vha->hw;
 991         fc_port_t *fcport;
 992         srb_t *sp;
 993         struct srb_logio *lio;
 994         uint16_t data[2];
 995         uint32_t iop[2];
 996
 997         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
 998         if (!sp)
 999                 return;
1000
1001         type = NULL;
1002         lio = sp->ctx;
1003         switch (lio->ctx.type) {
1004         case SRB_LOGIN_CMD:
1005                 type = "login";
1006                 break;
1007         case SRB_LOGOUT_CMD:
1008                 type = "logout";
1009                 break;
1010         default:
1011                 qla_printk(KERN_WARNING, ha,
1012                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1013                     lio->ctx.type);
1014                 return;
1015         }
1016
1017         del_timer(&lio->ctx.timer);
1018         fcport = sp->fcport;
1019
1020         data[0] = data[1] = 0;
1021         if (logio->entry_status) {
1022                 DEBUG2(printk(KERN_WARNING
1023                     "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
1024                     fcport->vha->host_no, sp->handle, type,
1025                     logio->entry_status));
1026                 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1027
1028                 data[0] = MBS_COMMAND_ERROR;
1029                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1030                     QLA_LOGIO_LOGIN_RETRIED: 0;
1031                 goto done_post_logio_done_work;
1032         }
1033
1034         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1035                 DEBUG2(printk(KERN_DEBUG
1036                     "scsi(%ld:%x): Async-%s complete - iop0=%x.\n",
1037                     fcport->vha->host_no, sp->handle, type,
1038                     le32_to_cpu(logio->io_parameter[0])));
1039
1040                 data[0] = MBS_COMMAND_COMPLETE;
1041                 if (lio->ctx.type == SRB_LOGOUT_CMD)
1042                         goto done_post_logio_done_work;
1043
1044                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1045                 if (iop[0] & BIT_4) {
1046                         fcport->port_type = FCT_TARGET;
1047                         if (iop[0] & BIT_8)
1048                                 fcport->flags |= FCF_FCP2_DEVICE;
1049                 }
1050                 if (iop[0] & BIT_5)
1051                         fcport->port_type = FCT_INITIATOR;
1052                 if (logio->io_parameter[7] || logio->io_parameter[8])
1053                         fcport->supported_classes |= FC_COS_CLASS2;
1054                 if (logio->io_parameter[9] || logio->io_parameter[10])
1055                         fcport->supported_classes |= FC_COS_CLASS3;
1056
1057                 goto done_post_logio_done_work;
1058         }
1059
1060         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1061         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1062         switch (iop[0]) {
1063         case LSC_SCODE_PORTID_USED:
1064                 data[0] = MBS_PORT_ID_USED;
1065                 data[1] = LSW(iop[1]);
1066                 break;
1067         case LSC_SCODE_NPORT_USED:
1068                 data[0] = MBS_LOOP_ID_USED;
1069                 break;
1070         case LSC_SCODE_CMD_FAILED:
1071                 if ((iop[1] & 0xff) == 0x05) {
1072                         data[0] = MBS_NOT_LOGGED_IN;
1073                         break;
1074                 }
1075                 /* Fall through. */
1076         default:
1077                 data[0] = MBS_COMMAND_ERROR;
1078                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1079                     QLA_LOGIO_LOGIN_RETRIED: 0;
1080                 break;
1081         }
1082
1083         DEBUG2(printk(KERN_WARNING
1084             "scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n",
1085             fcport->vha->host_no, sp->handle, type,
1086             le16_to_cpu(logio->comp_status),
1087             le32_to_cpu(logio->io_parameter[0]),
1088             le32_to_cpu(logio->io_parameter[1])));
1089
1090 done_post_logio_done_work:
1091         lio->ctx.type == SRB_LOGIN_CMD ?
1092             qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1093             qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1094
1095         lio->ctx.free(sp);
1096 }
1097
1098 /**
1099  * qla2x00_process_response_queue() - Process response queue entries.
1100  * @ha: SCSI driver HA context
1101  */
1102 void
1103 qla2x00_process_response_queue(struct rsp_que *rsp)
1104 {
1105         struct scsi_qla_host *vha;
1106         struct qla_hw_data *ha = rsp->hw;
1107         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1108         sts_entry_t     *pkt;
1109         uint16_t        handle_cnt;
1110         uint16_t        cnt;
1111
1112         vha = pci_get_drvdata(ha->pdev);
1113
1114         if (!vha->flags.online)
1115                 return;
1116
1117         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1118                 pkt = (sts_entry_t *)rsp->ring_ptr;
1119
1120                 rsp->ring_index++;
1121                 if (rsp->ring_index == rsp->length) {
1122                         rsp->ring_index = 0;
1123                         rsp->ring_ptr = rsp->ring;
1124                 } else {
1125                         rsp->ring_ptr++;
1126                 }
1127
1128                 if (pkt->entry_status != 0) {
1129                         DEBUG3(printk(KERN_INFO
1130                             "scsi(%ld): Process error entry.\n", vha->host_no));
1131
1132                         qla2x00_error_entry(vha, rsp, pkt);
1133                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1134                         wmb();
1135                         continue;
1136                 }
1137
1138                 switch (pkt->entry_type) {
1139                 case STATUS_TYPE:
1140                         qla2x00_status_entry(vha, rsp, pkt);
1141                         break;
1142                 case STATUS_TYPE_21:
1143                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1144                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1145                                 qla2x00_process_completed_request(vha, rsp->req,
1146                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1147                         }
1148                         break;
1149                 case STATUS_TYPE_22:
1150                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1151                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1152                                 qla2x00_process_completed_request(vha, rsp->req,
1153                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1154                         }
1155                         break;
1156                 case STATUS_CONT_TYPE:
1157                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1158                         break;
1159                 case MBX_IOCB_TYPE:
1160                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1161                             (struct mbx_entry *)pkt);
1162                 default:
1163                         /* Type Not Supported. */
1164                         DEBUG4(printk(KERN_WARNING
1165                             "scsi(%ld): Received unknown response pkt type %x "
1166                             "entry status=%x.\n",
1167                             vha->host_no, pkt->entry_type, pkt->entry_status));
1168                         break;
1169                 }
1170                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1171                 wmb();
1172         }
1173
1174         /* Adjust ring index */
1175         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1176 }
1177
1178 static inline void
1179 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
1180         struct rsp_que *rsp)
1181 {
1182         struct scsi_cmnd *cp = sp->cmd;
1183
1184         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1185                 sense_len = SCSI_SENSE_BUFFERSIZE;
1186
1187         sp->request_sense_length = sense_len;
1188         sp->request_sense_ptr = cp->sense_buffer;
1189         if (sp->request_sense_length > 32)
1190                 sense_len = 32;
1191
1192         memcpy(cp->sense_buffer, sense_data, sense_len);
1193
1194         sp->request_sense_ptr += sense_len;
1195         sp->request_sense_length -= sense_len;
1196         if (sp->request_sense_length != 0)
1197                 rsp->status_srb = sp;
1198
1199         DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1200             "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
1201             cp->device->channel, cp->device->id, cp->device->lun, cp,
1202             cp->serial_number));
1203         if (sense_len)
1204                 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1205 }
1206
1207 /**
1208  * qla2x00_status_entry() - Process a Status IOCB entry.
1209  * @ha: SCSI driver HA context
1210  * @pkt: Entry pointer
1211  */
1212 static void
1213 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1214 {
1215         srb_t           *sp;
1216         fc_port_t       *fcport;
1217         struct scsi_cmnd *cp;
1218         sts_entry_t *sts;
1219         struct sts_entry_24xx *sts24;
1220         uint16_t        comp_status;
1221         uint16_t        scsi_status;
1222         uint8_t         lscsi_status;
1223         int32_t         resid;
1224         uint32_t        sense_len, rsp_info_len, resid_len, fw_resid_len;
1225         uint8_t         *rsp_info, *sense_data;
1226         struct qla_hw_data *ha = vha->hw;
1227         uint32_t handle;
1228         uint16_t que;
1229         struct req_que *req;
1230
1231         sts = (sts_entry_t *) pkt;
1232         sts24 = (struct sts_entry_24xx *) pkt;
1233         if (IS_FWI2_CAPABLE(ha)) {
1234                 comp_status = le16_to_cpu(sts24->comp_status);
1235                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1236         } else {
1237                 comp_status = le16_to_cpu(sts->comp_status);
1238                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1239         }
1240         handle = (uint32_t) LSW(sts->handle);
1241         que = MSW(sts->handle);
1242         req = ha->req_q_map[que];
1243         /* Fast path completion. */
1244         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1245                 qla2x00_process_completed_request(vha, req, handle);
1246
1247                 return;
1248         }
1249
1250         /* Validate handle. */
1251         if (handle < MAX_OUTSTANDING_COMMANDS) {
1252                 sp = req->outstanding_cmds[handle];
1253                 req->outstanding_cmds[handle] = NULL;
1254         } else
1255                 sp = NULL;
1256
1257         if (sp == NULL) {
1258                 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1259                     vha->host_no));
1260                 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1261
1262                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1263                 qla2xxx_wake_dpc(vha);
1264                 return;
1265         }
1266         cp = sp->cmd;
1267         if (cp == NULL) {
1268                 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1269                     "pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
1270                 qla_printk(KERN_WARNING, ha,
1271                     "Command is NULL: already returned to OS (sp=%p)\n", sp);
1272
1273                 return;
1274         }
1275
1276         lscsi_status = scsi_status & STATUS_MASK;
1277
1278         fcport = sp->fcport;
1279
1280         sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1281         if (IS_FWI2_CAPABLE(ha)) {
1282                 if (scsi_status & SS_SENSE_LEN_VALID)
1283                         sense_len = le32_to_cpu(sts24->sense_len);
1284                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1285                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1286                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1287                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1288                 if (comp_status == CS_DATA_UNDERRUN)
1289                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1290                 rsp_info = sts24->data;
1291                 sense_data = sts24->data;
1292                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1293         } else {
1294                 if (scsi_status & SS_SENSE_LEN_VALID)
1295                         sense_len = le16_to_cpu(sts->req_sense_length);
1296                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1297                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1298                 resid_len = le32_to_cpu(sts->residual_length);
1299                 rsp_info = sts->rsp_info;
1300                 sense_data = sts->req_sense_data;
1301         }
1302
1303         /* Check for any FCP transport errors. */
1304         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1305                 /* Sense data lies beyond any FCP RESPONSE data. */
1306                 if (IS_FWI2_CAPABLE(ha))
1307                         sense_data += rsp_info_len;
1308                 if (rsp_info_len > 3 && rsp_info[3]) {
1309                         DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1310                             "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1311                             "retrying command\n", vha->host_no,
1312                             cp->device->channel, cp->device->id,
1313                             cp->device->lun, rsp_info_len, rsp_info[0],
1314                             rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1315                             rsp_info[5], rsp_info[6], rsp_info[7]));
1316
1317                         cp->result = DID_BUS_BUSY << 16;
1318                         qla2x00_sp_compl(ha, sp);
1319                         return;
1320                 }
1321         }
1322
1323         /* Check for overrun. */
1324         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1325             scsi_status & SS_RESIDUAL_OVER)
1326                 comp_status = CS_DATA_OVERRUN;
1327
1328         /*
1329          * Based on Host and scsi status generate status code for Linux
1330          */
1331         switch (comp_status) {
1332         case CS_COMPLETE:
1333         case CS_QUEUE_FULL:
1334                 if (scsi_status == 0) {
1335                         cp->result = DID_OK << 16;
1336                         break;
1337                 }
1338                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1339                         resid = resid_len;
1340                         scsi_set_resid(cp, resid);
1341
1342                         if (!lscsi_status &&
1343                             ((unsigned)(scsi_bufflen(cp) - resid) <
1344                              cp->underflow)) {
1345                                 qla_printk(KERN_INFO, ha,
1346                                            "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1347                                            "detected (%x of %x bytes)...returning "
1348                                            "error status.\n", vha->host_no,
1349                                            cp->device->channel, cp->device->id,
1350                                            cp->device->lun, resid,
1351                                            scsi_bufflen(cp));
1352
1353                                 cp->result = DID_ERROR << 16;
1354                                 break;
1355                         }
1356                 }
1357                 cp->result = DID_OK << 16 | lscsi_status;
1358
1359                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1360                         DEBUG2(printk(KERN_INFO
1361                             "scsi(%ld): QUEUE FULL status detected "
1362                             "0x%x-0x%x.\n", vha->host_no, comp_status,
1363                             scsi_status));
1364                         break;
1365                 }
1366                 if (lscsi_status != SS_CHECK_CONDITION)
1367                         break;
1368
1369                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1370                 if (!(scsi_status & SS_SENSE_LEN_VALID))
1371                         break;
1372
1373                 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1374                 break;
1375
1376         case CS_DATA_UNDERRUN:
1377                 DEBUG2(printk(KERN_INFO
1378                     "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x. "
1379                     "resid=0x%x fw_resid=0x%x cdb=0x%x os_underflow=0x%x\n",
1380                     vha->host_no, cp->device->id, cp->device->lun, comp_status,
1381                     scsi_status, resid_len, fw_resid_len, cp->cmnd[0],
1382                     cp->underflow));
1383
1384                 /* Use F/W calculated residual length. */
1385                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1386                 scsi_set_resid(cp, resid);
1387                 if (scsi_status & SS_RESIDUAL_UNDER) {
1388                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1389                                 DEBUG2(printk(
1390                                     "scsi(%ld:%d:%d:%d) Dropped frame(s) "
1391                                     "detected (%x of %x bytes)...residual "
1392                                     "length mismatch...retrying command.\n",
1393                                     vha->host_no, cp->device->channel,
1394                                     cp->device->id, cp->device->lun, resid,
1395                                     scsi_bufflen(cp)));
1396
1397                                 cp->result = DID_ERROR << 16 | lscsi_status;
1398                                 break;
1399                         }
1400
1401                         if (!lscsi_status &&
1402                             ((unsigned)(scsi_bufflen(cp) - resid) <
1403                             cp->underflow)) {
1404                                 qla_printk(KERN_INFO, ha,
1405                                     "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1406                                     "detected (%x of %x bytes)...returning "
1407                                     "error status.\n", vha->host_no,
1408                                     cp->device->channel, cp->device->id,
1409                                     cp->device->lun, resid, scsi_bufflen(cp));
1410
1411                                 cp->result = DID_ERROR << 16;
1412                                 break;
1413                         }
1414                 } else if (!lscsi_status) {
1415                         DEBUG2(printk(
1416                             "scsi(%ld:%d:%d:%d) Dropped frame(s) detected "
1417                             "(%x of %x bytes)...firmware reported underrun..."
1418                             "retrying command.\n", vha->host_no,
1419                             cp->device->channel, cp->device->id,
1420                             cp->device->lun, resid, scsi_bufflen(cp)));
1421
1422                         cp->result = DID_ERROR << 16;
1423                         break;
1424                 }
1425
1426                 cp->result = DID_OK << 16 | lscsi_status;
1427
1428                 /*
1429                  * Check to see if SCSI Status is non zero. If so report SCSI
1430                  * Status.
1431                  */
1432                 if (lscsi_status != 0) {
1433                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1434                                 DEBUG2(printk(KERN_INFO
1435                                     "scsi(%ld): QUEUE FULL status detected "
1436                                     "0x%x-0x%x.\n", vha->host_no, comp_status,
1437                                     scsi_status));
1438                                 break;
1439                         }
1440                         if (lscsi_status != SS_CHECK_CONDITION)
1441                                 break;
1442
1443                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1444                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1445                                 break;
1446
1447                         qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1448                 }
1449                 break;
1450
1451         case CS_DATA_OVERRUN:
1452                 DEBUG2(printk(KERN_INFO
1453                     "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1454                     vha->host_no, cp->device->id, cp->device->lun, comp_status,
1455                     scsi_status));
1456                 DEBUG2(printk(KERN_INFO
1457                     "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1458                     cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1459                     cp->cmnd[4], cp->cmnd[5]));
1460                 DEBUG2(printk(KERN_INFO
1461                     "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1462                     "status!\n",
1463                     cp->serial_number, scsi_bufflen(cp), resid_len));
1464
1465                 cp->result = DID_ERROR << 16;
1466                 break;
1467
1468         case CS_PORT_LOGGED_OUT:
1469         case CS_PORT_CONFIG_CHG:
1470         case CS_PORT_BUSY:
1471         case CS_INCOMPLETE:
1472         case CS_PORT_UNAVAILABLE:
1473                 /*
1474                  * If the port is in Target Down state, return all IOs for this
1475                  * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1476                  * retry_queue.
1477                  */
1478                 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1479                     "pid=%ld, compl status=0x%x, port state=0x%x\n",
1480                     vha->host_no, cp->device->id, cp->device->lun,
1481                     cp->serial_number, comp_status,
1482                     atomic_read(&fcport->state)));
1483
1484                 /*
1485                  * We are going to have the fc class block the rport
1486                  * while we try to recover so instruct the mid layer
1487                  * to requeue until the class decides how to handle this.
1488                  */
1489                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1490                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1491                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1492                 break;
1493
1494         case CS_RESET:
1495                 DEBUG2(printk(KERN_INFO
1496                     "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1497                     vha->host_no, comp_status, scsi_status));
1498
1499                 cp->result = DID_RESET << 16;
1500                 break;
1501
1502         case CS_ABORTED:
1503                 /*
1504                  * hv2.19.12 - DID_ABORT does not retry the request if we
1505                  * aborted this request then abort otherwise it must be a
1506                  * reset.
1507                  */
1508                 DEBUG2(printk(KERN_INFO
1509                     "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1510                     vha->host_no, comp_status, scsi_status));
1511
1512                 cp->result = DID_RESET << 16;
1513                 break;
1514
1515         case CS_TIMEOUT:
1516                 /*
1517                  * We are going to have the fc class block the rport
1518                  * while we try to recover so instruct the mid layer
1519                  * to requeue until the class decides how to handle this.
1520                  */
1521                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1522
1523                 if (IS_FWI2_CAPABLE(ha)) {
1524                         DEBUG2(printk(KERN_INFO
1525                             "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1526                             "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1527                             cp->device->id, cp->device->lun, comp_status,
1528                             scsi_status));
1529                         break;
1530                 }
1531                 DEBUG2(printk(KERN_INFO
1532                     "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1533                     "sflags=%x.\n", vha->host_no, cp->device->channel,
1534                     cp->device->id, cp->device->lun, comp_status, scsi_status,
1535                     le16_to_cpu(sts->status_flags)));
1536
1537                 /* Check to see if logout occurred. */
1538                 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1539                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1540                 break;
1541
1542         default:
1543                 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1544                     "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1545                 qla_printk(KERN_INFO, ha,
1546                     "Unknown status detected 0x%x-0x%x.\n",
1547                     comp_status, scsi_status);
1548
1549                 cp->result = DID_ERROR << 16;
1550                 break;
1551         }
1552
1553         /* Place command on done queue. */
1554         if (rsp->status_srb == NULL)
1555                 qla2x00_sp_compl(ha, sp);
1556 }
1557
1558 /**
1559  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1560  * @ha: SCSI driver HA context
1561  * @pkt: Entry pointer
1562  *
1563  * Extended sense data.
1564  */
1565 static void
1566 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1567 {
1568         uint8_t         sense_sz = 0;
1569         struct qla_hw_data *ha = rsp->hw;
1570         srb_t           *sp = rsp->status_srb;
1571         struct scsi_cmnd *cp;
1572
1573         if (sp != NULL && sp->request_sense_length != 0) {
1574                 cp = sp->cmd;
1575                 if (cp == NULL) {
1576                         DEBUG2(printk("%s(): Cmd already returned back to OS "
1577                             "sp=%p.\n", __func__, sp));
1578                         qla_printk(KERN_INFO, ha,
1579                             "cmd is NULL: already returned to OS (sp=%p)\n",
1580                             sp);
1581
1582                         rsp->status_srb = NULL;
1583                         return;
1584                 }
1585
1586                 if (sp->request_sense_length > sizeof(pkt->data)) {
1587                         sense_sz = sizeof(pkt->data);
1588                 } else {
1589                         sense_sz = sp->request_sense_length;
1590                 }
1591
1592                 /* Move sense data. */
1593                 if (IS_FWI2_CAPABLE(ha))
1594                         host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1595                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1596                 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1597
1598                 sp->request_sense_ptr += sense_sz;
1599                 sp->request_sense_length -= sense_sz;
1600
1601                 /* Place command on done queue. */
1602                 if (sp->request_sense_length == 0) {
1603                         rsp->status_srb = NULL;
1604                         qla2x00_sp_compl(ha, sp);
1605                 }
1606         }
1607 }
1608
1609 /**
1610  * qla2x00_error_entry() - Process an error entry.
1611  * @ha: SCSI driver HA context
1612  * @pkt: Entry pointer
1613  */
1614 static void
1615 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1616 {
1617         srb_t *sp;
1618         struct qla_hw_data *ha = vha->hw;
1619         uint32_t handle = LSW(pkt->handle);
1620         uint16_t que = MSW(pkt->handle);
1621         struct req_que *req = ha->req_q_map[que];
1622 #if defined(QL_DEBUG_LEVEL_2)
1623         if (pkt->entry_status & RF_INV_E_ORDER)
1624                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1625         else if (pkt->entry_status & RF_INV_E_COUNT)
1626                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1627         else if (pkt->entry_status & RF_INV_E_PARAM)
1628                 qla_printk(KERN_ERR, ha,
1629                     "%s: Invalid Entry Parameter\n", __func__);
1630         else if (pkt->entry_status & RF_INV_E_TYPE)
1631                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1632         else if (pkt->entry_status & RF_BUSY)
1633                 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1634         else
1635                 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1636 #endif
1637
1638         /* Validate handle. */
1639         if (handle < MAX_OUTSTANDING_COMMANDS)
1640                 sp = req->outstanding_cmds[handle];
1641         else
1642                 sp = NULL;
1643
1644         if (sp) {
1645                 /* Free outstanding command slot. */
1646                 req->outstanding_cmds[handle] = NULL;
1647
1648                 /* Bad payload or header */
1649                 if (pkt->entry_status &
1650                     (RF_INV_E_ORDER | RF_INV_E_COUNT |
1651                      RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1652                         sp->cmd->result = DID_ERROR << 16;
1653                 } else if (pkt->entry_status & RF_BUSY) {
1654                         sp->cmd->result = DID_BUS_BUSY << 16;
1655                 } else {
1656                         sp->cmd->result = DID_ERROR << 16;
1657                 }
1658                 qla2x00_sp_compl(ha, sp);
1659
1660         } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1661             COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1662                 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1663                     vha->host_no));
1664                 qla_printk(KERN_WARNING, ha,
1665                     "Error entry - invalid handle\n");
1666
1667                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1668                 qla2xxx_wake_dpc(vha);
1669         }
1670 }
1671
1672 /**
1673  * qla24xx_mbx_completion() - Process mailbox command completions.
1674  * @ha: SCSI driver HA context
1675  * @mb0: Mailbox0 register
1676  */
1677 static void
1678 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1679 {
1680         uint16_t        cnt;
1681         uint16_t __iomem *wptr;
1682         struct qla_hw_data *ha = vha->hw;
1683         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1684
1685         /* Load return mailbox registers. */
1686         ha->flags.mbox_int = 1;
1687         ha->mailbox_out[0] = mb0;
1688         wptr = (uint16_t __iomem *)&reg->mailbox1;
1689
1690         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1691                 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1692                 wptr++;
1693         }
1694
1695         if (ha->mcp) {
1696                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1697                     __func__, vha->host_no, ha->mcp->mb[0]));
1698         } else {
1699                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1700                     __func__, vha->host_no));
1701         }
1702 }
1703
1704 /**
1705  * qla24xx_process_response_queue() - Process response queue entries.
1706  * @ha: SCSI driver HA context
1707  */
1708 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1709         struct rsp_que *rsp)
1710 {
1711         struct sts_entry_24xx *pkt;
1712
1713         if (!vha->flags.online)
1714                 return;
1715
1716         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1717                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1718
1719                 rsp->ring_index++;
1720                 if (rsp->ring_index == rsp->length) {
1721                         rsp->ring_index = 0;
1722                         rsp->ring_ptr = rsp->ring;
1723                 } else {
1724                         rsp->ring_ptr++;
1725                 }
1726
1727                 if (pkt->entry_status != 0) {
1728                         DEBUG3(printk(KERN_INFO
1729                             "scsi(%ld): Process error entry.\n", vha->host_no));
1730
1731                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1732                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1733                         wmb();
1734                         continue;
1735                 }
1736
1737                 switch (pkt->entry_type) {
1738                 case STATUS_TYPE:
1739                         qla2x00_status_entry(vha, rsp, pkt);
1740                         break;
1741                 case STATUS_CONT_TYPE:
1742                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1743                         break;
1744                 case VP_RPT_ID_IOCB_TYPE:
1745                         qla24xx_report_id_acquisition(vha,
1746                             (struct vp_rpt_id_entry_24xx *)pkt);
1747                         break;
1748                 case LOGINOUT_PORT_IOCB_TYPE:
1749                         qla24xx_logio_entry(vha, rsp->req,
1750                             (struct logio_entry_24xx *)pkt);
1751                         break;
1752                 default:
1753                         /* Type Not Supported. */
1754                         DEBUG4(printk(KERN_WARNING
1755                             "scsi(%ld): Received unknown response pkt type %x "
1756                             "entry status=%x.\n",
1757                             vha->host_no, pkt->entry_type, pkt->entry_status));
1758                         break;
1759                 }
1760                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1761                 wmb();
1762         }
1763
1764         /* Adjust ring index */
1765         WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1766 }
1767
1768 static void
1769 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1770 {
1771         int rval;
1772         uint32_t cnt;
1773         struct qla_hw_data *ha = vha->hw;
1774         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1775
1776         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1777                 return;
1778
1779         rval = QLA_SUCCESS;
1780         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1781         RD_REG_DWORD(&reg->iobase_addr);
1782         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1783         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1784             rval == QLA_SUCCESS; cnt--) {
1785                 if (cnt) {
1786                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1787                         udelay(10);
1788                 } else
1789                         rval = QLA_FUNCTION_TIMEOUT;
1790         }
1791         if (rval == QLA_SUCCESS)
1792                 goto next_test;
1793
1794         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1795         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1796             rval == QLA_SUCCESS; cnt--) {
1797                 if (cnt) {
1798                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1799                         udelay(10);
1800                 } else
1801                         rval = QLA_FUNCTION_TIMEOUT;
1802         }
1803         if (rval != QLA_SUCCESS)
1804                 goto done;
1805
1806 next_test:
1807         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1808                 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1809
1810 done:
1811         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1812         RD_REG_DWORD(&reg->iobase_window);
1813 }
1814
1815 /**
1816  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1817  * @irq:
1818  * @dev_id: SCSI driver HA context
1819  *
1820  * Called by system whenever the host adapter generates an interrupt.
1821  *
1822  * Returns handled flag.
1823  */
1824 irqreturn_t
1825 qla24xx_intr_handler(int irq, void *dev_id)
1826 {
1827         scsi_qla_host_t *vha;
1828         struct qla_hw_data *ha;
1829         struct device_reg_24xx __iomem *reg;
1830         int             status;
1831         unsigned long   iter;
1832         uint32_t        stat;
1833         uint32_t        hccr;
1834         uint16_t        mb[4];
1835         struct rsp_que *rsp;
1836         unsigned long   flags;
1837
1838         rsp = (struct rsp_que *) dev_id;
1839         if (!rsp) {
1840                 printk(KERN_INFO
1841                     "%s(): NULL response queue pointer\n", __func__);
1842                 return IRQ_NONE;
1843         }
1844
1845         ha = rsp->hw;
1846         reg = &ha->iobase->isp24;
1847         status = 0;
1848
1849         spin_lock_irqsave(&ha->hardware_lock, flags);
1850         vha = pci_get_drvdata(ha->pdev);
1851         for (iter = 50; iter--; ) {
1852                 stat = RD_REG_DWORD(&reg->host_status);
1853                 if (stat & HSRX_RISC_PAUSED) {
1854                         if (pci_channel_offline(ha->pdev))
1855                                 break;
1856
1857                         hccr = RD_REG_DWORD(&reg->hccr);
1858
1859                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1860                             "Dumping firmware!\n", hccr);
1861
1862                         qla2xxx_check_risc_status(vha);
1863
1864                         ha->isp_ops->fw_dump(vha, 1);
1865                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1866                         break;
1867                 } else if ((stat & HSRX_RISC_INT) == 0)
1868                         break;
1869
1870                 switch (stat & 0xff) {
1871                 case 0x1:
1872                 case 0x2:
1873                 case 0x10:
1874                 case 0x11:
1875                         qla24xx_mbx_completion(vha, MSW(stat));
1876                         status |= MBX_INTERRUPT;
1877
1878                         break;
1879                 case 0x12:
1880                         mb[0] = MSW(stat);
1881                         mb[1] = RD_REG_WORD(&reg->mailbox1);
1882                         mb[2] = RD_REG_WORD(&reg->mailbox2);
1883                         mb[3] = RD_REG_WORD(&reg->mailbox3);
1884                         qla2x00_async_event(vha, rsp, mb);
1885                         break;
1886                 case 0x13:
1887                 case 0x14:
1888                         qla24xx_process_response_queue(vha, rsp);
1889                         break;
1890                 default:
1891                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1892                             "(%d).\n",
1893                             vha->host_no, stat & 0xff));
1894                         break;
1895                 }
1896                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1897                 RD_REG_DWORD_RELAXED(&reg->hccr);
1898         }
1899         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1900
1901         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1902             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1903                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1904                 complete(&ha->mbx_intr_comp);
1905         }
1906
1907         return IRQ_HANDLED;
1908 }
1909
1910 static irqreturn_t
1911 qla24xx_msix_rsp_q(int irq, void *dev_id)
1912 {
1913         struct qla_hw_data *ha;
1914         struct rsp_que *rsp;
1915         struct device_reg_24xx __iomem *reg;
1916         struct scsi_qla_host *vha;
1917
1918         rsp = (struct rsp_que *) dev_id;
1919         if (!rsp) {
1920                 printk(KERN_INFO
1921                 "%s(): NULL response queue pointer\n", __func__);
1922                 return IRQ_NONE;
1923         }
1924         ha = rsp->hw;
1925         reg = &ha->iobase->isp24;
1926
1927         spin_lock_irq(&ha->hardware_lock);
1928
1929         vha = qla25xx_get_host(rsp);
1930         qla24xx_process_response_queue(vha, rsp);
1931         if (!ha->flags.disable_msix_handshake) {
1932                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1933                 RD_REG_DWORD_RELAXED(&reg->hccr);
1934         }
1935         spin_unlock_irq(&ha->hardware_lock);
1936
1937         return IRQ_HANDLED;
1938 }
1939
1940 static irqreturn_t
1941 qla25xx_msix_rsp_q(int irq, void *dev_id)
1942 {
1943         struct qla_hw_data *ha;
1944         struct rsp_que *rsp;
1945         struct device_reg_24xx __iomem *reg;
1946
1947         rsp = (struct rsp_que *) dev_id;
1948         if (!rsp) {
1949                 printk(KERN_INFO
1950                         "%s(): NULL response queue pointer\n", __func__);
1951                 return IRQ_NONE;
1952         }
1953         ha = rsp->hw;
1954
1955         /* Clear the interrupt, if enabled, for this response queue */
1956         if (rsp->options & ~BIT_6) {
1957                 reg = &ha->iobase->isp24;
1958                 spin_lock_irq(&ha->hardware_lock);
1959                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1960                 RD_REG_DWORD_RELAXED(&reg->hccr);
1961                 spin_unlock_irq(&ha->hardware_lock);
1962         }
1963         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
1964
1965         return IRQ_HANDLED;
1966 }
1967
1968 static irqreturn_t
1969 qla24xx_msix_default(int irq, void *dev_id)
1970 {
1971         scsi_qla_host_t *vha;
1972         struct qla_hw_data *ha;
1973         struct rsp_que *rsp;
1974         struct device_reg_24xx __iomem *reg;
1975         int             status;
1976         uint32_t        stat;
1977         uint32_t        hccr;
1978         uint16_t        mb[4];
1979
1980         rsp = (struct rsp_que *) dev_id;
1981         if (!rsp) {
1982                 DEBUG(printk(
1983                 "%s(): NULL response queue pointer\n", __func__));
1984                 return IRQ_NONE;
1985         }
1986         ha = rsp->hw;
1987         reg = &ha->iobase->isp24;
1988         status = 0;
1989
1990         spin_lock_irq(&ha->hardware_lock);
1991         vha = pci_get_drvdata(ha->pdev);
1992         do {
1993                 stat = RD_REG_DWORD(&reg->host_status);
1994                 if (stat & HSRX_RISC_PAUSED) {
1995                         if (pci_channel_offline(ha->pdev))
1996                                 break;
1997
1998                         hccr = RD_REG_DWORD(&reg->hccr);
1999
2000                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2001                             "Dumping firmware!\n", hccr);
2002
2003                         qla2xxx_check_risc_status(vha);
2004
2005                         ha->isp_ops->fw_dump(vha, 1);
2006                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2007                         break;
2008                 } else if ((stat & HSRX_RISC_INT) == 0)
2009                         break;
2010
2011                 switch (stat & 0xff) {
2012                 case 0x1:
2013                 case 0x2:
2014                 case 0x10:
2015                 case 0x11:
2016                         qla24xx_mbx_completion(vha, MSW(stat));
2017                         status |= MBX_INTERRUPT;
2018
2019                         break;
2020                 case 0x12:
2021                         mb[0] = MSW(stat);
2022                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2023                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2024                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2025                         qla2x00_async_event(vha, rsp, mb);
2026                         break;
2027                 case 0x13:
2028                 case 0x14:
2029                         qla24xx_process_response_queue(vha, rsp);
2030                         break;
2031                 default:
2032                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2033                             "(%d).\n",
2034                             vha->host_no, stat & 0xff));
2035                         break;
2036                 }
2037                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2038         } while (0);
2039         spin_unlock_irq(&ha->hardware_lock);
2040
2041         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2042             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2043                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2044                 complete(&ha->mbx_intr_comp);
2045         }
2046
2047         return IRQ_HANDLED;
2048 }
2049
2050 /* Interrupt handling helpers. */
2051
2052 struct qla_init_msix_entry {
2053         const char *name;
2054         irq_handler_t handler;
2055 };
2056
2057 static struct qla_init_msix_entry msix_entries[3] = {
2058         { "qla2xxx (default)", qla24xx_msix_default },
2059         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2060         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2061 };
2062
2063 static void
2064 qla24xx_disable_msix(struct qla_hw_data *ha)
2065 {
2066         int i;
2067         struct qla_msix_entry *qentry;
2068
2069         for (i = 0; i < ha->msix_count; i++) {
2070                 qentry = &ha->msix_entries[i];
2071                 if (qentry->have_irq)
2072                         free_irq(qentry->vector, qentry->rsp);
2073         }
2074         pci_disable_msix(ha->pdev);
2075         kfree(ha->msix_entries);
2076         ha->msix_entries = NULL;
2077         ha->flags.msix_enabled = 0;
2078 }
2079
2080 static int
2081 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2082 {
2083 #define MIN_MSIX_COUNT  2
2084         int i, ret;
2085         struct msix_entry *entries;
2086         struct qla_msix_entry *qentry;
2087
2088         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2089                                         GFP_KERNEL);
2090         if (!entries)
2091                 return -ENOMEM;
2092
2093         for (i = 0; i < ha->msix_count; i++)
2094                 entries[i].entry = i;
2095
2096         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2097         if (ret) {
2098                 if (ret < MIN_MSIX_COUNT)
2099                         goto msix_failed;
2100
2101                 qla_printk(KERN_WARNING, ha,
2102                         "MSI-X: Failed to enable support -- %d/%d\n"
2103                         " Retry with %d vectors\n", ha->msix_count, ret, ret);
2104                 ha->msix_count = ret;
2105                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2106                 if (ret) {
2107 msix_failed:
2108                         qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2109                                 " support, giving up -- %d/%d\n",
2110                                 ha->msix_count, ret);
2111                         goto msix_out;
2112                 }
2113                 ha->max_rsp_queues = ha->msix_count - 1;
2114         }
2115         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2116                                 ha->msix_count, GFP_KERNEL);
2117         if (!ha->msix_entries) {
2118                 ret = -ENOMEM;
2119                 goto msix_out;
2120         }
2121         ha->flags.msix_enabled = 1;
2122
2123         for (i = 0; i < ha->msix_count; i++) {
2124                 qentry = &ha->msix_entries[i];
2125                 qentry->vector = entries[i].vector;
2126                 qentry->entry = entries[i].entry;
2127                 qentry->have_irq = 0;
2128                 qentry->rsp = NULL;
2129         }
2130
2131         /* Enable MSI-X vectors for the base queue */
2132         for (i = 0; i < 2; i++) {
2133                 qentry = &ha->msix_entries[i];
2134                 ret = request_irq(qentry->vector, msix_entries[i].handler,
2135                                         0, msix_entries[i].name, rsp);
2136                 if (ret) {
2137                         qla_printk(KERN_WARNING, ha,
2138                         "MSI-X: Unable to register handler -- %x/%d.\n",
2139                         qentry->vector, ret);
2140                         qla24xx_disable_msix(ha);
2141                         ha->mqenable = 0;
2142                         goto msix_out;
2143                 }
2144                 qentry->have_irq = 1;
2145                 qentry->rsp = rsp;
2146                 rsp->msix = qentry;
2147         }
2148
2149         /* Enable MSI-X vector for response queue update for queue 0 */
2150         if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2151                 ha->mqenable = 1;
2152
2153 msix_out:
2154         kfree(entries);
2155         return ret;
2156 }
2157
2158 int
2159 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2160 {
2161         int ret;
2162         device_reg_t __iomem *reg = ha->iobase;
2163
2164         /* If possible, enable MSI-X. */
2165         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2166             !IS_QLA8432(ha) && !IS_QLA8001(ha))
2167                 goto skip_msix;
2168
2169         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2170                 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2171                 DEBUG2(qla_printk(KERN_WARNING, ha,
2172                 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2173                         ha->pdev->revision, ha->fw_attributes));
2174
2175                 goto skip_msix;
2176         }
2177
2178         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2179             (ha->pdev->subsystem_device == 0x7040 ||
2180                 ha->pdev->subsystem_device == 0x7041 ||
2181                 ha->pdev->subsystem_device == 0x1705)) {
2182                 DEBUG2(qla_printk(KERN_WARNING, ha,
2183                     "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
2184                     ha->pdev->subsystem_vendor,
2185                     ha->pdev->subsystem_device));
2186
2187                 goto skip_msi;
2188         }
2189
2190         ret = qla24xx_enable_msix(ha, rsp);
2191         if (!ret) {
2192                 DEBUG2(qla_printk(KERN_INFO, ha,
2193                     "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2194                     ha->fw_attributes));
2195                 goto clear_risc_ints;
2196         }
2197         qla_printk(KERN_WARNING, ha,
2198             "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2199 skip_msix:
2200
2201         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2202             !IS_QLA8001(ha))
2203                 goto skip_msi;
2204
2205         ret = pci_enable_msi(ha->pdev);
2206         if (!ret) {
2207                 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2208                 ha->flags.msi_enabled = 1;
2209         }
2210 skip_msi:
2211
2212         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2213             IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2214         if (ret) {
2215                 qla_printk(KERN_WARNING, ha,
2216                     "Failed to reserve interrupt %d already in use.\n",
2217                     ha->pdev->irq);
2218                 goto fail;
2219         }
2220         ha->flags.inta_enabled = 1;
2221 clear_risc_ints:
2222
2223         /*
2224          * FIXME: Noted that 8014s were being dropped during NK testing.
2225          * Timing deltas during MSI-X/INTa transitions?
2226          */
2227         if (IS_QLA81XX(ha))
2228                 goto fail;
2229         spin_lock_irq(&ha->hardware_lock);
2230         if (IS_FWI2_CAPABLE(ha)) {
2231                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2232                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2233         } else {
2234                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2235                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2236                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2237         }
2238         spin_unlock_irq(&ha->hardware_lock);
2239
2240 fail:
2241         return ret;
2242 }
2243
2244 void
2245 qla2x00_free_irqs(scsi_qla_host_t *vha)
2246 {
2247         struct qla_hw_data *ha = vha->hw;
2248         struct rsp_que *rsp = ha->rsp_q_map[0];
2249
2250         if (ha->flags.msix_enabled)
2251                 qla24xx_disable_msix(ha);
2252         else if (ha->flags.inta_enabled) {
2253                 free_irq(ha->pdev->irq, rsp);
2254                 pci_disable_msi(ha->pdev);
2255         }
2256 }
2257
2258
2259 int qla25xx_request_irq(struct rsp_que *rsp)
2260 {
2261         struct qla_hw_data *ha = rsp->hw;
2262         struct qla_init_msix_entry *intr = &msix_entries[2];
2263         struct qla_msix_entry *msix = rsp->msix;
2264         int ret;
2265
2266         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2267         if (ret) {
2268                 qla_printk(KERN_WARNING, ha,
2269                         "MSI-X: Unable to register handler -- %x/%d.\n",
2270                         msix->vector, ret);
2271                 return ret;
2272         }
2273         msix->have_irq = 1;
2274         msix->rsp = rsp;
2275         return ret;
2276 }
2277
2278 struct scsi_qla_host *
2279 qla25xx_get_host(struct rsp_que *rsp)
2280 {
2281         srb_t *sp;
2282         struct qla_hw_data *ha = rsp->hw;
2283         struct scsi_qla_host *vha = NULL;
2284         struct sts_entry_24xx *pkt;
2285         struct req_que *req;
2286         uint16_t que;
2287         uint32_t handle;
2288
2289         pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2290         que = MSW(pkt->handle);
2291         handle = (uint32_t) LSW(pkt->handle);
2292         req = ha->req_q_map[que];
2293         if (handle < MAX_OUTSTANDING_COMMANDS) {
2294                 sp = req->outstanding_cmds[handle];
2295                 if (sp)
2296                         return  sp->fcport->vha;
2297                 else
2298                         goto base_que;
2299         }
2300 base_que:
2301         vha = pci_get_drvdata(ha->pdev);
2302         return vha;
2303 }