SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 static void
 815 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
 816 {
 817         fc_port_t *fcport = data;
 818         struct scsi_qla_host *vha = fcport->vha;
 819         struct qla_hw_data *ha = vha->hw;
 820         struct req_que *req = NULL;
 821
 822         if (!ql2xqfulltracking)
 823                 return;
 824
 825         req = vha->req;
 826         if (!req)
 827                 return;
 828         if (req->max_q_depth <= sdev->queue_depth)
 829                 return;
 830
 831         if (sdev->ordered_tags)
 832                 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
 833                     sdev->queue_depth + 1);
 834         else
 835                 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
 836                     sdev->queue_depth + 1);
 837
 838         fcport->last_ramp_up = jiffies;
 839
 840         DEBUG2(qla_printk(KERN_INFO, ha,
 841             "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
 842             fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
 843             sdev->queue_depth));
 844 }
 845
 846 static void
 847 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
 848 {
 849         fc_port_t *fcport = data;
 850
 851         if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
 852                 return;
 853
 854         DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
 855             "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
 856             fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
 857             sdev->queue_depth));
 858 }
 859
 860 static inline void
 861 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *vha, struct req_que *req,
 862                                                                 srb_t *sp)
 863 {
 864         fc_port_t *fcport;
 865         struct scsi_device *sdev;
 866
 867         if (!ql2xqfulltracking)
 868                 return;
 869
 870         sdev = sp->cmd->device;
 871         if (sdev->queue_depth >= req->max_q_depth)
 872                 return;
 873
 874         fcport = sp->fcport;
 875         if (time_before(jiffies,
 876             fcport->last_ramp_up + ql2xqfullrampup * HZ))
 877                 return;
 878         if (time_before(jiffies,
 879             fcport->last_queue_full + ql2xqfullrampup * HZ))
 880                 return;
 881
 882         starget_for_each_device(sdev->sdev_target, fcport,
 883             qla2x00_adjust_sdev_qdepth_up);
 884 }
 885
 886 /**
 887  * qla2x00_process_completed_request() - Process a Fast Post response.
 888  * @ha: SCSI driver HA context
 889  * @index: SRB index
 890  */
 891 static void
 892 qla2x00_process_completed_request(struct scsi_qla_host *vha,
 893                                 struct req_que *req, uint32_t index)
 894 {
 895         srb_t *sp;
 896         struct qla_hw_data *ha = vha->hw;
 897
 898         /* Validate handle. */
 899         if (index >= MAX_OUTSTANDING_COMMANDS) {
 900                 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
 901                     vha->host_no, index));
 902                 qla_printk(KERN_WARNING, ha,
 903                     "Invalid SCSI completion handle %d.\n", index);
 904
 905                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 906                 return;
 907         }
 908
 909         sp = req->outstanding_cmds[index];
 910         if (sp) {
 911                 /* Free outstanding command slot. */
 912                 req->outstanding_cmds[index] = NULL;
 913
 914                 /* Save ISP completion status */
 915                 sp->cmd->result = DID_OK << 16;
 916
 917                 qla2x00_ramp_up_queue_depth(vha, req, sp);
 918                 qla2x00_sp_compl(ha, sp);
 919         } else {
 920                 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
 921                         " handle(%d)\n", vha->host_no, req->id, index));
 922                 qla_printk(KERN_WARNING, ha,
 923                     "Invalid ISP SCSI completion handle\n");
 924
 925                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 926         }
 927 }
 928
 929 static srb_t *
 930 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 931     struct req_que *req, void *iocb)
 932 {
 933         struct qla_hw_data *ha = vha->hw;
 934         sts_entry_t *pkt = iocb;
 935         srb_t *sp = NULL;
 936         uint16_t index;
 937
 938         index = LSW(pkt->handle);
 939         if (index >= MAX_OUTSTANDING_COMMANDS) {
 940                 qla_printk(KERN_WARNING, ha,
 941                     "%s: Invalid completion handle (%x).\n", func, index);
 942                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 943                 goto done;
 944         }
 945         sp = req->outstanding_cmds[index];
 946         if (!sp) {
 947                 qla_printk(KERN_WARNING, ha,
 948                     "%s: Invalid completion handle (%x) -- timed-out.\n", func,
 949                     index);
 950                 return sp;
 951         }
 952         if (sp->handle != index) {
 953                 qla_printk(KERN_WARNING, ha,
 954                     "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
 955                     index);
 956                 return NULL;
 957         }
 958         req->outstanding_cmds[index] = NULL;
 959 done:
 960         return sp;
 961 }
 962
 963 static void
 964 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
 965     struct mbx_entry *mbx)
 966 {
 967         const char func[] = "MBX-IOCB";
 968         const char *type;
 969         struct qla_hw_data *ha = vha->hw;
 970         fc_port_t *fcport;
 971         srb_t *sp;
 972         struct srb_logio *lio;
 973         uint16_t data[2];
 974
 975         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
 976         if (!sp)
 977                 return;
 978
 979         type = NULL;
 980         lio = sp->ctx;
 981         switch (lio->ctx.type) {
 982         case SRB_LOGIN_CMD:
 983                 type = "login";
 984                 break;
 985         case SRB_LOGOUT_CMD:
 986                 type = "logout";
 987                 break;
 988         default:
 989                 qla_printk(KERN_WARNING, ha,
 990                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
 991                     lio->ctx.type);
 992                 return;
 993         }
 994
 995         del_timer(&lio->ctx.timer);
 996         fcport = sp->fcport;
 997
 998         data[0] = data[1] = 0;
 999         if (mbx->entry_status) {
1000                 DEBUG2(printk(KERN_WARNING
1001                     "scsi(%ld:%x): Async-%s error entry - entry-status=%x "
1002                     "status=%x state-flag=%x status-flags=%x.\n",
1003                     fcport->vha->host_no, sp->handle, type,
1004                     mbx->entry_status, le16_to_cpu(mbx->status),
1005                     le16_to_cpu(mbx->state_flags),
1006                     le16_to_cpu(mbx->status_flags)));
1007                 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
1008
1009                 data[0] = MBS_COMMAND_ERROR;
1010                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1011                     QLA_LOGIO_LOGIN_RETRIED: 0;
1012                 goto done_post_logio_done_work;
1013         }
1014
1015         if (!mbx->status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1016                 DEBUG2(printk(KERN_DEBUG
1017                     "scsi(%ld:%x): Async-%s complete - mbx1=%x.\n",
1018                     fcport->vha->host_no, sp->handle, type,
1019                     le16_to_cpu(mbx->mb1)));
1020
1021                 data[0] = MBS_COMMAND_COMPLETE;
1022                 if (lio->ctx.type == SRB_LOGIN_CMD && le16_to_cpu(mbx->mb1) & BIT_1)
1023                         fcport->flags |= FCF_FCP2_DEVICE;
1024
1025                 goto done_post_logio_done_work;
1026         }
1027
1028         data[0] = le16_to_cpu(mbx->mb0);
1029         switch (data[0]) {
1030         case MBS_PORT_ID_USED:
1031                 data[1] = le16_to_cpu(mbx->mb1);
1032                 break;
1033         case MBS_LOOP_ID_USED:
1034                 break;
1035         default:
1036                 data[0] = MBS_COMMAND_ERROR;
1037                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1038                     QLA_LOGIO_LOGIN_RETRIED: 0;
1039                 break;
1040         }
1041
1042         DEBUG2(printk(KERN_WARNING
1043             "scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x "
1044             "mb6=%x mb7=%x.\n",
1045             fcport->vha->host_no, sp->handle, type, le16_to_cpu(mbx->status),
1046             le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1047             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1048             le16_to_cpu(mbx->mb7)));
1049
1050 done_post_logio_done_work:
1051         lio->ctx.type == SRB_LOGIN_CMD ?
1052             qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1053             qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1054
1055         lio->ctx.free(sp);
1056 }
1057
1058 static void
1059 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1060     struct logio_entry_24xx *logio)
1061 {
1062         const char func[] = "LOGIO-IOCB";
1063         const char *type;
1064         struct qla_hw_data *ha = vha->hw;
1065         fc_port_t *fcport;
1066         srb_t *sp;
1067         struct srb_logio *lio;
1068         uint16_t data[2];
1069         uint32_t iop[2];
1070
1071         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1072         if (!sp)
1073                 return;
1074
1075         type = NULL;
1076         lio = sp->ctx;
1077         switch (lio->ctx.type) {
1078         case SRB_LOGIN_CMD:
1079                 type = "login";
1080                 break;
1081         case SRB_LOGOUT_CMD:
1082                 type = "logout";
1083                 break;
1084         default:
1085                 qla_printk(KERN_WARNING, ha,
1086                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1087                     lio->ctx.type);
1088                 return;
1089         }
1090
1091         del_timer(&lio->ctx.timer);
1092         fcport = sp->fcport;
1093
1094         data[0] = data[1] = 0;
1095         if (logio->entry_status) {
1096                 DEBUG2(printk(KERN_WARNING
1097                     "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
1098                     fcport->vha->host_no, sp->handle, type,
1099                     logio->entry_status));
1100                 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1101
1102                 data[0] = MBS_COMMAND_ERROR;
1103                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1104                     QLA_LOGIO_LOGIN_RETRIED: 0;
1105                 goto done_post_logio_done_work;
1106         }
1107
1108         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1109                 DEBUG2(printk(KERN_DEBUG
1110                     "scsi(%ld:%x): Async-%s complete - iop0=%x.\n",
1111                     fcport->vha->host_no, sp->handle, type,
1112                     le32_to_cpu(logio->io_parameter[0])));
1113
1114                 data[0] = MBS_COMMAND_COMPLETE;
1115                 if (lio->ctx.type == SRB_LOGOUT_CMD)
1116                         goto done_post_logio_done_work;
1117
1118                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1119                 if (iop[0] & BIT_4) {
1120                         fcport->port_type = FCT_TARGET;
1121                         if (iop[0] & BIT_8)
1122                                 fcport->flags |= FCF_FCP2_DEVICE;
1123                 }
1124                 if (iop[0] & BIT_5)
1125                         fcport->port_type = FCT_INITIATOR;
1126                 if (logio->io_parameter[7] || logio->io_parameter[8])
1127                         fcport->supported_classes |= FC_COS_CLASS2;
1128                 if (logio->io_parameter[9] || logio->io_parameter[10])
1129                         fcport->supported_classes |= FC_COS_CLASS3;
1130
1131                 goto done_post_logio_done_work;
1132         }
1133
1134         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1135         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1136         switch (iop[0]) {
1137         case LSC_SCODE_PORTID_USED:
1138                 data[0] = MBS_PORT_ID_USED;
1139                 data[1] = LSW(iop[1]);
1140                 break;
1141         case LSC_SCODE_NPORT_USED:
1142                 data[0] = MBS_LOOP_ID_USED;
1143                 break;
1144         case LSC_SCODE_CMD_FAILED:
1145                 if ((iop[1] & 0xff) == 0x05) {
1146                         data[0] = MBS_NOT_LOGGED_IN;
1147                         break;
1148                 }
1149                 /* Fall through. */
1150         default:
1151                 data[0] = MBS_COMMAND_ERROR;
1152                 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1153                     QLA_LOGIO_LOGIN_RETRIED: 0;
1154                 break;
1155         }
1156
1157         DEBUG2(printk(KERN_WARNING
1158             "scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n",
1159             fcport->vha->host_no, sp->handle, type,
1160             le16_to_cpu(logio->comp_status),
1161             le32_to_cpu(logio->io_parameter[0]),
1162             le32_to_cpu(logio->io_parameter[1])));
1163
1164 done_post_logio_done_work:
1165         lio->ctx.type == SRB_LOGIN_CMD ?
1166             qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1167             qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1168
1169         lio->ctx.free(sp);
1170 }
1171
1172 /**
1173  * qla2x00_process_response_queue() - Process response queue entries.
1174  * @ha: SCSI driver HA context
1175  */
1176 void
1177 qla2x00_process_response_queue(struct rsp_que *rsp)
1178 {
1179         struct scsi_qla_host *vha;
1180         struct qla_hw_data *ha = rsp->hw;
1181         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1182         sts_entry_t     *pkt;
1183         uint16_t        handle_cnt;
1184         uint16_t        cnt;
1185
1186         vha = pci_get_drvdata(ha->pdev);
1187
1188         if (!vha->flags.online)
1189                 return;
1190
1191         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1192                 pkt = (sts_entry_t *)rsp->ring_ptr;
1193
1194                 rsp->ring_index++;
1195                 if (rsp->ring_index == rsp->length) {
1196                         rsp->ring_index = 0;
1197                         rsp->ring_ptr = rsp->ring;
1198                 } else {
1199                         rsp->ring_ptr++;
1200                 }
1201
1202                 if (pkt->entry_status != 0) {
1203                         DEBUG3(printk(KERN_INFO
1204                             "scsi(%ld): Process error entry.\n", vha->host_no));
1205
1206                         qla2x00_error_entry(vha, rsp, pkt);
1207                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1208                         wmb();
1209                         continue;
1210                 }
1211
1212                 switch (pkt->entry_type) {
1213                 case STATUS_TYPE:
1214                         qla2x00_status_entry(vha, rsp, pkt);
1215                         break;
1216                 case STATUS_TYPE_21:
1217                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1218                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1219                                 qla2x00_process_completed_request(vha, rsp->req,
1220                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1221                         }
1222                         break;
1223                 case STATUS_TYPE_22:
1224                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1225                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1226                                 qla2x00_process_completed_request(vha, rsp->req,
1227                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1228                         }
1229                         break;
1230                 case STATUS_CONT_TYPE:
1231                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1232                         break;
1233                 case MBX_IOCB_TYPE:
1234                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1235                             (struct mbx_entry *)pkt);
1236                 default:
1237                         /* Type Not Supported. */
1238                         DEBUG4(printk(KERN_WARNING
1239                             "scsi(%ld): Received unknown response pkt type %x "
1240                             "entry status=%x.\n",
1241                             vha->host_no, pkt->entry_type, pkt->entry_status));
1242                         break;
1243                 }
1244                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1245                 wmb();
1246         }
1247
1248         /* Adjust ring index */
1249         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1250 }
1251
1252 static inline void
1253 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
1254         struct rsp_que *rsp)
1255 {
1256         struct scsi_cmnd *cp = sp->cmd;
1257
1258         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1259                 sense_len = SCSI_SENSE_BUFFERSIZE;
1260
1261         sp->request_sense_length = sense_len;
1262         sp->request_sense_ptr = cp->sense_buffer;
1263         if (sp->request_sense_length > 32)
1264                 sense_len = 32;
1265
1266         memcpy(cp->sense_buffer, sense_data, sense_len);
1267
1268         sp->request_sense_ptr += sense_len;
1269         sp->request_sense_length -= sense_len;
1270         if (sp->request_sense_length != 0)
1271                 rsp->status_srb = sp;
1272
1273         DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1274             "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
1275             cp->device->channel, cp->device->id, cp->device->lun, cp,
1276             cp->serial_number));
1277         if (sense_len)
1278                 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1279 }
1280
1281 /**
1282  * qla2x00_status_entry() - Process a Status IOCB entry.
1283  * @ha: SCSI driver HA context
1284  * @pkt: Entry pointer
1285  */
1286 static void
1287 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1288 {
1289         srb_t           *sp;
1290         fc_port_t       *fcport;
1291         struct scsi_cmnd *cp;
1292         sts_entry_t *sts;
1293         struct sts_entry_24xx *sts24;
1294         uint16_t        comp_status;
1295         uint16_t        scsi_status;
1296         uint8_t         lscsi_status;
1297         int32_t         resid;
1298         uint32_t        sense_len, rsp_info_len, resid_len, fw_resid_len;
1299         uint8_t         *rsp_info, *sense_data;
1300         struct qla_hw_data *ha = vha->hw;
1301         uint32_t handle;
1302         uint16_t que;
1303         struct req_que *req;
1304
1305         sts = (sts_entry_t *) pkt;
1306         sts24 = (struct sts_entry_24xx *) pkt;
1307         if (IS_FWI2_CAPABLE(ha)) {
1308                 comp_status = le16_to_cpu(sts24->comp_status);
1309                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1310         } else {
1311                 comp_status = le16_to_cpu(sts->comp_status);
1312                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1313         }
1314         handle = (uint32_t) LSW(sts->handle);
1315         que = MSW(sts->handle);
1316         req = ha->req_q_map[que];
1317         /* Fast path completion. */
1318         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1319                 qla2x00_process_completed_request(vha, req, handle);
1320
1321                 return;
1322         }
1323
1324         /* Validate handle. */
1325         if (handle < MAX_OUTSTANDING_COMMANDS) {
1326                 sp = req->outstanding_cmds[handle];
1327                 req->outstanding_cmds[handle] = NULL;
1328         } else
1329                 sp = NULL;
1330
1331         if (sp == NULL) {
1332                 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1333                     vha->host_no));
1334                 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1335
1336                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1337                 qla2xxx_wake_dpc(vha);
1338                 return;
1339         }
1340         cp = sp->cmd;
1341         if (cp == NULL) {
1342                 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1343                     "pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
1344                 qla_printk(KERN_WARNING, ha,
1345                     "Command is NULL: already returned to OS (sp=%p)\n", sp);
1346
1347                 return;
1348         }
1349
1350         lscsi_status = scsi_status & STATUS_MASK;
1351
1352         fcport = sp->fcport;
1353
1354         sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1355         if (IS_FWI2_CAPABLE(ha)) {
1356                 if (scsi_status & SS_SENSE_LEN_VALID)
1357                         sense_len = le32_to_cpu(sts24->sense_len);
1358                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1359                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1360                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1361                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1362                 if (comp_status == CS_DATA_UNDERRUN)
1363                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1364                 rsp_info = sts24->data;
1365                 sense_data = sts24->data;
1366                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1367         } else {
1368                 if (scsi_status & SS_SENSE_LEN_VALID)
1369                         sense_len = le16_to_cpu(sts->req_sense_length);
1370                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1371                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1372                 resid_len = le32_to_cpu(sts->residual_length);
1373                 rsp_info = sts->rsp_info;
1374                 sense_data = sts->req_sense_data;
1375         }
1376
1377         /* Check for any FCP transport errors. */
1378         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1379                 /* Sense data lies beyond any FCP RESPONSE data. */
1380                 if (IS_FWI2_CAPABLE(ha))
1381                         sense_data += rsp_info_len;
1382                 if (rsp_info_len > 3 && rsp_info[3]) {
1383                         DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1384                             "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1385                             "retrying command\n", vha->host_no,
1386                             cp->device->channel, cp->device->id,
1387                             cp->device->lun, rsp_info_len, rsp_info[0],
1388                             rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1389                             rsp_info[5], rsp_info[6], rsp_info[7]));
1390
1391                         cp->result = DID_BUS_BUSY << 16;
1392                         qla2x00_sp_compl(ha, sp);
1393                         return;
1394                 }
1395         }
1396
1397         /* Check for overrun. */
1398         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1399             scsi_status & SS_RESIDUAL_OVER)
1400                 comp_status = CS_DATA_OVERRUN;
1401
1402         /*
1403          * Based on Host and scsi status generate status code for Linux
1404          */
1405         switch (comp_status) {
1406         case CS_COMPLETE:
1407         case CS_QUEUE_FULL:
1408                 if (scsi_status == 0) {
1409                         cp->result = DID_OK << 16;
1410                         break;
1411                 }
1412                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1413                         resid = resid_len;
1414                         scsi_set_resid(cp, resid);
1415
1416                         if (!lscsi_status &&
1417                             ((unsigned)(scsi_bufflen(cp) - resid) <
1418                              cp->underflow)) {
1419                                 qla_printk(KERN_INFO, ha,
1420                                            "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1421                                            "detected (%x of %x bytes)...returning "
1422                                            "error status.\n", vha->host_no,
1423                                            cp->device->channel, cp->device->id,
1424                                            cp->device->lun, resid,
1425                                            scsi_bufflen(cp));
1426
1427                                 cp->result = DID_ERROR << 16;
1428                                 break;
1429                         }
1430                 }
1431                 cp->result = DID_OK << 16 | lscsi_status;
1432
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
1439                         /* Adjust queue depth for all luns on the port. */
1440                         if (!ql2xqfulltracking)
1441                                 break;
1442                         fcport->last_queue_full = jiffies;
1443                         starget_for_each_device(cp->device->sdev_target,
1444                             fcport, qla2x00_adjust_sdev_qdepth_down);
1445                         break;
1446                 }
1447                 if (lscsi_status != SS_CHECK_CONDITION)
1448                         break;
1449
1450                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1451                 if (!(scsi_status & SS_SENSE_LEN_VALID))
1452                         break;
1453
1454                 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1455                 break;
1456
1457         case CS_DATA_UNDERRUN:
1458                 DEBUG2(printk(KERN_INFO
1459                     "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x. "
1460                     "resid=0x%x fw_resid=0x%x cdb=0x%x os_underflow=0x%x\n",
1461                     vha->host_no, cp->device->id, cp->device->lun, comp_status,
1462                     scsi_status, resid_len, fw_resid_len, cp->cmnd[0],
1463                     cp->underflow));
1464
1465                 /* Use F/W calculated residual length. */
1466                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1467                 scsi_set_resid(cp, resid);
1468                 if (scsi_status & SS_RESIDUAL_UNDER) {
1469                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1470                                 DEBUG2(printk(
1471                                     "scsi(%ld:%d:%d:%d) Dropped frame(s) "
1472                                     "detected (%x of %x bytes)...residual "
1473                                     "length mismatch...retrying command.\n",
1474                                     vha->host_no, cp->device->channel,
1475                                     cp->device->id, cp->device->lun, resid,
1476                                     scsi_bufflen(cp)));
1477
1478                                 cp->result = DID_ERROR << 16 | lscsi_status;
1479                                 break;
1480                         }
1481
1482                         if (!lscsi_status &&
1483                             ((unsigned)(scsi_bufflen(cp) - resid) <
1484                             cp->underflow)) {
1485                                 qla_printk(KERN_INFO, ha,
1486                                     "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1487                                     "detected (%x of %x bytes)...returning "
1488                                     "error status.\n", vha->host_no,
1489                                     cp->device->channel, cp->device->id,
1490                                     cp->device->lun, resid, scsi_bufflen(cp));
1491
1492                                 cp->result = DID_ERROR << 16;
1493                                 break;
1494                         }
1495                 } else if (!lscsi_status) {
1496                         DEBUG2(printk(
1497                             "scsi(%ld:%d:%d:%d) Dropped frame(s) detected "
1498                             "(%x of %x bytes)...firmware reported underrun..."
1499                             "retrying command.\n", vha->host_no,
1500                             cp->device->channel, cp->device->id,
1501                             cp->device->lun, resid, scsi_bufflen(cp)));
1502
1503                         cp->result = DID_ERROR << 16;
1504                         break;
1505                 }
1506
1507                 cp->result = DID_OK << 16 | lscsi_status;
1508
1509                 /*
1510                  * Check to see if SCSI Status is non zero. If so report SCSI
1511                  * Status.
1512                  */
1513                 if (lscsi_status != 0) {
1514                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1515                                 DEBUG2(printk(KERN_INFO
1516                                     "scsi(%ld): QUEUE FULL status detected "
1517                                     "0x%x-0x%x.\n", vha->host_no, comp_status,
1518                                     scsi_status));
1519
1520                                 /*
1521                                  * Adjust queue depth for all luns on the
1522                                  * port.
1523                                  */
1524                                 if (!ql2xqfulltracking)
1525                                         break;
1526                                 fcport->last_queue_full = jiffies;
1527                                 starget_for_each_device(
1528                                     cp->device->sdev_target, fcport,
1529                                     qla2x00_adjust_sdev_qdepth_down);
1530                                 break;
1531                         }
1532                         if (lscsi_status != SS_CHECK_CONDITION)
1533                                 break;
1534
1535                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1536                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1537                                 break;
1538
1539                         qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1540                 }
1541                 break;
1542
1543         case CS_DATA_OVERRUN:
1544                 DEBUG2(printk(KERN_INFO
1545                     "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1546                     vha->host_no, cp->device->id, cp->device->lun, comp_status,
1547                     scsi_status));
1548                 DEBUG2(printk(KERN_INFO
1549                     "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1550                     cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1551                     cp->cmnd[4], cp->cmnd[5]));
1552                 DEBUG2(printk(KERN_INFO
1553                     "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1554                     "status!\n",
1555                     cp->serial_number, scsi_bufflen(cp), resid_len));
1556
1557                 cp->result = DID_ERROR << 16;
1558                 break;
1559
1560         case CS_PORT_LOGGED_OUT:
1561         case CS_PORT_CONFIG_CHG:
1562         case CS_PORT_BUSY:
1563         case CS_INCOMPLETE:
1564         case CS_PORT_UNAVAILABLE:
1565                 /*
1566                  * If the port is in Target Down state, return all IOs for this
1567                  * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1568                  * retry_queue.
1569                  */
1570                 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1571                     "pid=%ld, compl status=0x%x, port state=0x%x\n",
1572                     vha->host_no, cp->device->id, cp->device->lun,
1573                     cp->serial_number, comp_status,
1574                     atomic_read(&fcport->state)));
1575
1576                 /*
1577                  * We are going to have the fc class block the rport
1578                  * while we try to recover so instruct the mid layer
1579                  * to requeue until the class decides how to handle this.
1580                  */
1581                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1582                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1583                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1584                 break;
1585
1586         case CS_RESET:
1587                 DEBUG2(printk(KERN_INFO
1588                     "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1589                     vha->host_no, comp_status, scsi_status));
1590
1591                 cp->result = DID_RESET << 16;
1592                 break;
1593
1594         case CS_ABORTED:
1595                 /*
1596                  * hv2.19.12 - DID_ABORT does not retry the request if we
1597                  * aborted this request then abort otherwise it must be a
1598                  * reset.
1599                  */
1600                 DEBUG2(printk(KERN_INFO
1601                     "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1602                     vha->host_no, comp_status, scsi_status));
1603
1604                 cp->result = DID_RESET << 16;
1605                 break;
1606
1607         case CS_TIMEOUT:
1608                 /*
1609                  * We are going to have the fc class block the rport
1610                  * while we try to recover so instruct the mid layer
1611                  * to requeue until the class decides how to handle this.
1612                  */
1613                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1614
1615                 if (IS_FWI2_CAPABLE(ha)) {
1616                         DEBUG2(printk(KERN_INFO
1617                             "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1618                             "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1619                             cp->device->id, cp->device->lun, comp_status,
1620                             scsi_status));
1621                         break;
1622                 }
1623                 DEBUG2(printk(KERN_INFO
1624                     "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1625                     "sflags=%x.\n", vha->host_no, cp->device->channel,
1626                     cp->device->id, cp->device->lun, comp_status, scsi_status,
1627                     le16_to_cpu(sts->status_flags)));
1628
1629                 /* Check to see if logout occurred. */
1630                 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1631                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1632                 break;
1633
1634         default:
1635                 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1636                     "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1637                 qla_printk(KERN_INFO, ha,
1638                     "Unknown status detected 0x%x-0x%x.\n",
1639                     comp_status, scsi_status);
1640
1641                 cp->result = DID_ERROR << 16;
1642                 break;
1643         }
1644
1645         /* Place command on done queue. */
1646         if (rsp->status_srb == NULL)
1647                 qla2x00_sp_compl(ha, sp);
1648 }
1649
1650 /**
1651  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1652  * @ha: SCSI driver HA context
1653  * @pkt: Entry pointer
1654  *
1655  * Extended sense data.
1656  */
1657 static void
1658 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1659 {
1660         uint8_t         sense_sz = 0;
1661         struct qla_hw_data *ha = rsp->hw;
1662         srb_t           *sp = rsp->status_srb;
1663         struct scsi_cmnd *cp;
1664
1665         if (sp != NULL && sp->request_sense_length != 0) {
1666                 cp = sp->cmd;
1667                 if (cp == NULL) {
1668                         DEBUG2(printk("%s(): Cmd already returned back to OS "
1669                             "sp=%p.\n", __func__, sp));
1670                         qla_printk(KERN_INFO, ha,
1671                             "cmd is NULL: already returned to OS (sp=%p)\n",
1672                             sp);
1673
1674                         rsp->status_srb = NULL;
1675                         return;
1676                 }
1677
1678                 if (sp->request_sense_length > sizeof(pkt->data)) {
1679                         sense_sz = sizeof(pkt->data);
1680                 } else {
1681                         sense_sz = sp->request_sense_length;
1682                 }
1683
1684                 /* Move sense data. */
1685                 if (IS_FWI2_CAPABLE(ha))
1686                         host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1687                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1688                 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1689
1690                 sp->request_sense_ptr += sense_sz;
1691                 sp->request_sense_length -= sense_sz;
1692
1693                 /* Place command on done queue. */
1694                 if (sp->request_sense_length == 0) {
1695                         rsp->status_srb = NULL;
1696                         qla2x00_sp_compl(ha, sp);
1697                 }
1698         }
1699 }
1700
1701 /**
1702  * qla2x00_error_entry() - Process an error entry.
1703  * @ha: SCSI driver HA context
1704  * @pkt: Entry pointer
1705  */
1706 static void
1707 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1708 {
1709         srb_t *sp;
1710         struct qla_hw_data *ha = vha->hw;
1711         uint32_t handle = LSW(pkt->handle);
1712         uint16_t que = MSW(pkt->handle);
1713         struct req_que *req = ha->req_q_map[que];
1714 #if defined(QL_DEBUG_LEVEL_2)
1715         if (pkt->entry_status & RF_INV_E_ORDER)
1716                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1717         else if (pkt->entry_status & RF_INV_E_COUNT)
1718                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1719         else if (pkt->entry_status & RF_INV_E_PARAM)
1720                 qla_printk(KERN_ERR, ha,
1721                     "%s: Invalid Entry Parameter\n", __func__);
1722         else if (pkt->entry_status & RF_INV_E_TYPE)
1723                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1724         else if (pkt->entry_status & RF_BUSY)
1725                 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1726         else
1727                 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1728 #endif
1729
1730         /* Validate handle. */
1731         if (handle < MAX_OUTSTANDING_COMMANDS)
1732                 sp = req->outstanding_cmds[handle];
1733         else
1734                 sp = NULL;
1735
1736         if (sp) {
1737                 /* Free outstanding command slot. */
1738                 req->outstanding_cmds[handle] = NULL;
1739
1740                 /* Bad payload or header */
1741                 if (pkt->entry_status &
1742                     (RF_INV_E_ORDER | RF_INV_E_COUNT |
1743                      RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1744                         sp->cmd->result = DID_ERROR << 16;
1745                 } else if (pkt->entry_status & RF_BUSY) {
1746                         sp->cmd->result = DID_BUS_BUSY << 16;
1747                 } else {
1748                         sp->cmd->result = DID_ERROR << 16;
1749                 }
1750                 qla2x00_sp_compl(ha, sp);
1751
1752         } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1753             COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1754                 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1755                     vha->host_no));
1756                 qla_printk(KERN_WARNING, ha,
1757                     "Error entry - invalid handle\n");
1758
1759                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1760                 qla2xxx_wake_dpc(vha);
1761         }
1762 }
1763
1764 /**
1765  * qla24xx_mbx_completion() - Process mailbox command completions.
1766  * @ha: SCSI driver HA context
1767  * @mb0: Mailbox0 register
1768  */
1769 static void
1770 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1771 {
1772         uint16_t        cnt;
1773         uint16_t __iomem *wptr;
1774         struct qla_hw_data *ha = vha->hw;
1775         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1776
1777         /* Load return mailbox registers. */
1778         ha->flags.mbox_int = 1;
1779         ha->mailbox_out[0] = mb0;
1780         wptr = (uint16_t __iomem *)&reg->mailbox1;
1781
1782         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1783                 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1784                 wptr++;
1785         }
1786
1787         if (ha->mcp) {
1788                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1789                     __func__, vha->host_no, ha->mcp->mb[0]));
1790         } else {
1791                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1792                     __func__, vha->host_no));
1793         }
1794 }
1795
1796 /**
1797  * qla24xx_process_response_queue() - Process response queue entries.
1798  * @ha: SCSI driver HA context
1799  */
1800 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1801         struct rsp_que *rsp)
1802 {
1803         struct sts_entry_24xx *pkt;
1804
1805         if (!vha->flags.online)
1806                 return;
1807
1808         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1809                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1810
1811                 rsp->ring_index++;
1812                 if (rsp->ring_index == rsp->length) {
1813                         rsp->ring_index = 0;
1814                         rsp->ring_ptr = rsp->ring;
1815                 } else {
1816                         rsp->ring_ptr++;
1817                 }
1818
1819                 if (pkt->entry_status != 0) {
1820                         DEBUG3(printk(KERN_INFO
1821                             "scsi(%ld): Process error entry.\n", vha->host_no));
1822
1823                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1824                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1825                         wmb();
1826                         continue;
1827                 }
1828
1829                 switch (pkt->entry_type) {
1830                 case STATUS_TYPE:
1831                         qla2x00_status_entry(vha, rsp, pkt);
1832                         break;
1833                 case STATUS_CONT_TYPE:
1834                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1835                         break;
1836                 case VP_RPT_ID_IOCB_TYPE:
1837                         qla24xx_report_id_acquisition(vha,
1838                             (struct vp_rpt_id_entry_24xx *)pkt);
1839                         break;
1840                 case LOGINOUT_PORT_IOCB_TYPE:
1841                         qla24xx_logio_entry(vha, rsp->req,
1842                             (struct logio_entry_24xx *)pkt);
1843                         break;
1844                 default:
1845                         /* Type Not Supported. */
1846                         DEBUG4(printk(KERN_WARNING
1847                             "scsi(%ld): Received unknown response pkt type %x "
1848                             "entry status=%x.\n",
1849                             vha->host_no, pkt->entry_type, pkt->entry_status));
1850                         break;
1851                 }
1852                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1853                 wmb();
1854         }
1855
1856         /* Adjust ring index */
1857         WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1858 }
1859
1860 static void
1861 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1862 {
1863         int rval;
1864         uint32_t cnt;
1865         struct qla_hw_data *ha = vha->hw;
1866         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1867
1868         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1869                 return;
1870
1871         rval = QLA_SUCCESS;
1872         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1873         RD_REG_DWORD(&reg->iobase_addr);
1874         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1875         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1876             rval == QLA_SUCCESS; cnt--) {
1877                 if (cnt) {
1878                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1879                         udelay(10);
1880                 } else
1881                         rval = QLA_FUNCTION_TIMEOUT;
1882         }
1883         if (rval == QLA_SUCCESS)
1884                 goto next_test;
1885
1886         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1887         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1888             rval == QLA_SUCCESS; cnt--) {
1889                 if (cnt) {
1890                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1891                         udelay(10);
1892                 } else
1893                         rval = QLA_FUNCTION_TIMEOUT;
1894         }
1895         if (rval != QLA_SUCCESS)
1896                 goto done;
1897
1898 next_test:
1899         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1900                 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1901
1902 done:
1903         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1904         RD_REG_DWORD(&reg->iobase_window);
1905 }
1906
1907 /**
1908  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1909  * @irq:
1910  * @dev_id: SCSI driver HA context
1911  *
1912  * Called by system whenever the host adapter generates an interrupt.
1913  *
1914  * Returns handled flag.
1915  */
1916 irqreturn_t
1917 qla24xx_intr_handler(int irq, void *dev_id)
1918 {
1919         scsi_qla_host_t *vha;
1920         struct qla_hw_data *ha;
1921         struct device_reg_24xx __iomem *reg;
1922         int             status;
1923         unsigned long   iter;
1924         uint32_t        stat;
1925         uint32_t        hccr;
1926         uint16_t        mb[4];
1927         struct rsp_que *rsp;
1928         unsigned long   flags;
1929
1930         rsp = (struct rsp_que *) dev_id;
1931         if (!rsp) {
1932                 printk(KERN_INFO
1933                     "%s(): NULL response queue pointer\n", __func__);
1934                 return IRQ_NONE;
1935         }
1936
1937         ha = rsp->hw;
1938         reg = &ha->iobase->isp24;
1939         status = 0;
1940
1941         spin_lock_irqsave(&ha->hardware_lock, flags);
1942         vha = pci_get_drvdata(ha->pdev);
1943         for (iter = 50; iter--; ) {
1944                 stat = RD_REG_DWORD(&reg->host_status);
1945                 if (stat & HSRX_RISC_PAUSED) {
1946                         if (pci_channel_offline(ha->pdev))
1947                                 break;
1948
1949                         hccr = RD_REG_DWORD(&reg->hccr);
1950
1951                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1952                             "Dumping firmware!\n", hccr);
1953
1954                         qla2xxx_check_risc_status(vha);
1955
1956                         ha->isp_ops->fw_dump(vha, 1);
1957                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1958                         break;
1959                 } else if ((stat & HSRX_RISC_INT) == 0)
1960                         break;
1961
1962                 switch (stat & 0xff) {
1963                 case 0x1:
1964                 case 0x2:
1965                 case 0x10:
1966                 case 0x11:
1967                         qla24xx_mbx_completion(vha, MSW(stat));
1968                         status |= MBX_INTERRUPT;
1969
1970                         break;
1971                 case 0x12:
1972                         mb[0] = MSW(stat);
1973                         mb[1] = RD_REG_WORD(&reg->mailbox1);
1974                         mb[2] = RD_REG_WORD(&reg->mailbox2);
1975                         mb[3] = RD_REG_WORD(&reg->mailbox3);
1976                         qla2x00_async_event(vha, rsp, mb);
1977                         break;
1978                 case 0x13:
1979                 case 0x14:
1980                         qla24xx_process_response_queue(vha, rsp);
1981                         break;
1982                 default:
1983                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1984                             "(%d).\n",
1985                             vha->host_no, stat & 0xff));
1986                         break;
1987                 }
1988                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1989                 RD_REG_DWORD_RELAXED(&reg->hccr);
1990         }
1991         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1992
1993         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1994             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1995                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1996                 complete(&ha->mbx_intr_comp);
1997         }
1998
1999         return IRQ_HANDLED;
2000 }
2001
2002 static irqreturn_t
2003 qla24xx_msix_rsp_q(int irq, void *dev_id)
2004 {
2005         struct qla_hw_data *ha;
2006         struct rsp_que *rsp;
2007         struct device_reg_24xx __iomem *reg;
2008         struct scsi_qla_host *vha;
2009
2010         rsp = (struct rsp_que *) dev_id;
2011         if (!rsp) {
2012                 printk(KERN_INFO
2013                 "%s(): NULL response queue pointer\n", __func__);
2014                 return IRQ_NONE;
2015         }
2016         ha = rsp->hw;
2017         reg = &ha->iobase->isp24;
2018
2019         spin_lock_irq(&ha->hardware_lock);
2020
2021         vha = qla25xx_get_host(rsp);
2022         qla24xx_process_response_queue(vha, rsp);
2023         if (!ha->mqenable) {
2024                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2025                 RD_REG_DWORD_RELAXED(&reg->hccr);
2026         }
2027         spin_unlock_irq(&ha->hardware_lock);
2028
2029         return IRQ_HANDLED;
2030 }
2031
2032 static irqreturn_t
2033 qla25xx_msix_rsp_q(int irq, void *dev_id)
2034 {
2035         struct qla_hw_data *ha;
2036         struct rsp_que *rsp;
2037
2038         rsp = (struct rsp_que *) dev_id;
2039         if (!rsp) {
2040                 printk(KERN_INFO
2041                         "%s(): NULL response queue pointer\n", __func__);
2042                 return IRQ_NONE;
2043         }
2044         ha = rsp->hw;
2045
2046         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2047
2048         return IRQ_HANDLED;
2049 }
2050
2051 static irqreturn_t
2052 qla24xx_msix_default(int irq, void *dev_id)
2053 {
2054         scsi_qla_host_t *vha;
2055         struct qla_hw_data *ha;
2056         struct rsp_que *rsp;
2057         struct device_reg_24xx __iomem *reg;
2058         int             status;
2059         uint32_t        stat;
2060         uint32_t        hccr;
2061         uint16_t        mb[4];
2062
2063         rsp = (struct rsp_que *) dev_id;
2064         if (!rsp) {
2065                 DEBUG(printk(
2066                 "%s(): NULL response queue pointer\n", __func__));
2067                 return IRQ_NONE;
2068         }
2069         ha = rsp->hw;
2070         reg = &ha->iobase->isp24;
2071         status = 0;
2072
2073         spin_lock_irq(&ha->hardware_lock);
2074         vha = pci_get_drvdata(ha->pdev);
2075         do {
2076                 stat = RD_REG_DWORD(&reg->host_status);
2077                 if (stat & HSRX_RISC_PAUSED) {
2078                         if (pci_channel_offline(ha->pdev))
2079                                 break;
2080
2081                         hccr = RD_REG_DWORD(&reg->hccr);
2082
2083                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2084                             "Dumping firmware!\n", hccr);
2085
2086                         qla2xxx_check_risc_status(vha);
2087
2088                         ha->isp_ops->fw_dump(vha, 1);
2089                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2090                         break;
2091                 } else if ((stat & HSRX_RISC_INT) == 0)
2092                         break;
2093
2094                 switch (stat & 0xff) {
2095                 case 0x1:
2096                 case 0x2:
2097                 case 0x10:
2098                 case 0x11:
2099                         qla24xx_mbx_completion(vha, MSW(stat));
2100                         status |= MBX_INTERRUPT;
2101
2102                         break;
2103                 case 0x12:
2104                         mb[0] = MSW(stat);
2105                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2106                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2107                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2108                         qla2x00_async_event(vha, rsp, mb);
2109                         break;
2110                 case 0x13:
2111                 case 0x14:
2112                         qla24xx_process_response_queue(vha, rsp);
2113                         break;
2114                 default:
2115                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2116                             "(%d).\n",
2117                             vha->host_no, stat & 0xff));
2118                         break;
2119                 }
2120                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2121         } while (0);
2122         spin_unlock_irq(&ha->hardware_lock);
2123
2124         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2125             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2126                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2127                 complete(&ha->mbx_intr_comp);
2128         }
2129
2130         return IRQ_HANDLED;
2131 }
2132
2133 /* Interrupt handling helpers. */
2134
2135 struct qla_init_msix_entry {
2136         const char *name;
2137         irq_handler_t handler;
2138 };
2139
2140 static struct qla_init_msix_entry msix_entries[3] = {
2141         { "qla2xxx (default)", qla24xx_msix_default },
2142         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2143         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2144 };
2145
2146 static void
2147 qla24xx_disable_msix(struct qla_hw_data *ha)
2148 {
2149         int i;
2150         struct qla_msix_entry *qentry;
2151
2152         for (i = 0; i < ha->msix_count; i++) {
2153                 qentry = &ha->msix_entries[i];
2154                 if (qentry->have_irq)
2155                         free_irq(qentry->vector, qentry->rsp);
2156         }
2157         pci_disable_msix(ha->pdev);
2158         kfree(ha->msix_entries);
2159         ha->msix_entries = NULL;
2160         ha->flags.msix_enabled = 0;
2161 }
2162
2163 static int
2164 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2165 {
2166 #define MIN_MSIX_COUNT  2
2167         int i, ret;
2168         struct msix_entry *entries;
2169         struct qla_msix_entry *qentry;
2170
2171         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2172                                         GFP_KERNEL);
2173         if (!entries)
2174                 return -ENOMEM;
2175
2176         for (i = 0; i < ha->msix_count; i++)
2177                 entries[i].entry = i;
2178
2179         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2180         if (ret) {
2181                 if (ret < MIN_MSIX_COUNT)
2182                         goto msix_failed;
2183
2184                 qla_printk(KERN_WARNING, ha,
2185                         "MSI-X: Failed to enable support -- %d/%d\n"
2186                         " Retry with %d vectors\n", ha->msix_count, ret, ret);
2187                 ha->msix_count = ret;
2188                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2189                 if (ret) {
2190 msix_failed:
2191                         qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2192                                 " support, giving up -- %d/%d\n",
2193                                 ha->msix_count, ret);
2194                         goto msix_out;
2195                 }
2196                 ha->max_rsp_queues = ha->msix_count - 1;
2197         }
2198         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2199                                 ha->msix_count, GFP_KERNEL);
2200         if (!ha->msix_entries) {
2201                 ret = -ENOMEM;
2202                 goto msix_out;
2203         }
2204         ha->flags.msix_enabled = 1;
2205
2206         for (i = 0; i < ha->msix_count; i++) {
2207                 qentry = &ha->msix_entries[i];
2208                 qentry->vector = entries[i].vector;
2209                 qentry->entry = entries[i].entry;
2210                 qentry->have_irq = 0;
2211                 qentry->rsp = NULL;
2212         }
2213
2214         /* Enable MSI-X vectors for the base queue */
2215         for (i = 0; i < 2; i++) {
2216                 qentry = &ha->msix_entries[i];
2217                 ret = request_irq(qentry->vector, msix_entries[i].handler,
2218                                         0, msix_entries[i].name, rsp);
2219                 if (ret) {
2220                         qla_printk(KERN_WARNING, ha,
2221                         "MSI-X: Unable to register handler -- %x/%d.\n",
2222                         qentry->vector, ret);
2223                         qla24xx_disable_msix(ha);
2224                         ha->mqenable = 0;
2225                         goto msix_out;
2226                 }
2227                 qentry->have_irq = 1;
2228                 qentry->rsp = rsp;
2229                 rsp->msix = qentry;
2230         }
2231
2232         /* Enable MSI-X vector for response queue update for queue 0 */
2233         if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2234                 ha->mqenable = 1;
2235
2236 msix_out:
2237         kfree(entries);
2238         return ret;
2239 }
2240
2241 int
2242 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2243 {
2244         int ret;
2245         device_reg_t __iomem *reg = ha->iobase;
2246
2247         /* If possible, enable MSI-X. */
2248         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2249             !IS_QLA8432(ha) && !IS_QLA8001(ha))
2250                 goto skip_msix;
2251
2252         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2253                 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2254                 DEBUG2(qla_printk(KERN_WARNING, ha,
2255                 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2256                         ha->pdev->revision, ha->fw_attributes));
2257
2258                 goto skip_msix;
2259         }
2260
2261         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2262             (ha->pdev->subsystem_device == 0x7040 ||
2263                 ha->pdev->subsystem_device == 0x7041 ||
2264                 ha->pdev->subsystem_device == 0x1705)) {
2265                 DEBUG2(qla_printk(KERN_WARNING, ha,
2266                     "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
2267                     ha->pdev->subsystem_vendor,
2268                     ha->pdev->subsystem_device));
2269
2270                 goto skip_msi;
2271         }
2272
2273         ret = qla24xx_enable_msix(ha, rsp);
2274         if (!ret) {
2275                 DEBUG2(qla_printk(KERN_INFO, ha,
2276                     "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2277                     ha->fw_attributes));
2278                 goto clear_risc_ints;
2279         }
2280         qla_printk(KERN_WARNING, ha,
2281             "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2282 skip_msix:
2283
2284         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2285             !IS_QLA8001(ha))
2286                 goto skip_msi;
2287
2288         ret = pci_enable_msi(ha->pdev);
2289         if (!ret) {
2290                 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2291                 ha->flags.msi_enabled = 1;
2292         }
2293 skip_msi:
2294
2295         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2296             IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2297         if (ret) {
2298                 qla_printk(KERN_WARNING, ha,
2299                     "Failed to reserve interrupt %d already in use.\n",
2300                     ha->pdev->irq);
2301                 goto fail;
2302         }
2303         ha->flags.inta_enabled = 1;
2304 clear_risc_ints:
2305
2306         /*
2307          * FIXME: Noted that 8014s were being dropped during NK testing.
2308          * Timing deltas during MSI-X/INTa transitions?
2309          */
2310         if (IS_QLA81XX(ha))
2311                 goto fail;
2312         spin_lock_irq(&ha->hardware_lock);
2313         if (IS_FWI2_CAPABLE(ha)) {
2314                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2315                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2316         } else {
2317                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2318                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2319                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2320         }
2321         spin_unlock_irq(&ha->hardware_lock);
2322
2323 fail:
2324         return ret;
2325 }
2326
2327 void
2328 qla2x00_free_irqs(scsi_qla_host_t *vha)
2329 {
2330         struct qla_hw_data *ha = vha->hw;
2331         struct rsp_que *rsp = ha->rsp_q_map[0];
2332
2333         if (ha->flags.msix_enabled)
2334                 qla24xx_disable_msix(ha);
2335         else if (ha->flags.inta_enabled) {
2336                 free_irq(ha->pdev->irq, rsp);
2337                 pci_disable_msi(ha->pdev);
2338         }
2339 }
2340
2341
2342 int qla25xx_request_irq(struct rsp_que *rsp)
2343 {
2344         struct qla_hw_data *ha = rsp->hw;
2345         struct qla_init_msix_entry *intr = &msix_entries[2];
2346         struct qla_msix_entry *msix = rsp->msix;
2347         int ret;
2348
2349         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2350         if (ret) {
2351                 qla_printk(KERN_WARNING, ha,
2352                         "MSI-X: Unable to register handler -- %x/%d.\n",
2353                         msix->vector, ret);
2354                 return ret;
2355         }
2356         msix->have_irq = 1;
2357         msix->rsp = rsp;
2358         return ret;
2359 }
2360
2361 struct scsi_qla_host *
2362 qla25xx_get_host(struct rsp_que *rsp)
2363 {
2364         srb_t *sp;
2365         struct qla_hw_data *ha = rsp->hw;
2366         struct scsi_qla_host *vha = NULL;
2367         struct sts_entry_24xx *pkt;
2368         struct req_que *req;
2369         uint16_t que;
2370         uint32_t handle;
2371
2372         pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2373         que = MSW(pkt->handle);
2374         handle = (uint32_t) LSW(pkt->handle);
2375         req = ha->req_q_map[que];
2376         if (handle < MAX_OUTSTANDING_COMMANDS) {
2377                 sp = req->outstanding_cmds[handle];
2378                 if (sp)
2379                         return  sp->fcport->vha;
2380                 else
2381                         goto base_que;
2382         }
2383 base_que:
2384         vha = pci_get_drvdata(ha->pdev);
2385         return vha;
2386 }