drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2010 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/delay.h>
  10 #include <linux/slab.h>
  11 #include <scsi/scsi_tcq.h>
  12 #include <scsi/scsi_bsg_fc.h>
  13 #include <scsi/scsi_eh.h>
  14
  15 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  16 static void qla2x00_process_completed_request(struct scsi_qla_host *,
  17         struct req_que *, uint32_t);
  18 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  19 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  20 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  21         sts_entry_t *);
  22
  23 /**
  24  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  25  * @irq:
  26  * @dev_id: SCSI driver HA context
  27  *
  28  * Called by system whenever the host adapter generates an interrupt.
  29  *
  30  * Returns handled flag.
  31  */
  32 irqreturn_t
  33 qla2100_intr_handler(int irq, void *dev_id)
  34 {
  35         scsi_qla_host_t *vha;
  36         struct qla_hw_data *ha;
  37         struct device_reg_2xxx __iomem *reg;
  38         int             status;
  39         unsigned long   iter;
  40         uint16_t        hccr;
  41         uint16_t        mb[4];
  42         struct rsp_que *rsp;
  43         unsigned long   flags;
  44
  45         rsp = (struct rsp_que *) dev_id;
  46         if (!rsp) {
  47                 printk(KERN_INFO
  48                     "%s(): NULL response queue pointer\n", __func__);
  49                 return (IRQ_NONE);
  50         }
  51
  52         ha = rsp->hw;
  53         reg = &ha->iobase->isp;
  54         status = 0;
  55
  56         spin_lock_irqsave(&ha->hardware_lock, flags);
  57         vha = pci_get_drvdata(ha->pdev);
  58         for (iter = 50; iter--; ) {
  59                 hccr = RD_REG_WORD(&reg->hccr);
  60                 if (hccr & HCCR_RISC_PAUSE) {
  61                         if (pci_channel_offline(ha->pdev))
  62                                 break;
  63
  64                         /*
  65                          * Issue a "HARD" reset in order for the RISC interrupt
  66                          * bit to be cleared.  Schedule a big hammmer to get
  67                          * out of the RISC PAUSED state.
  68                          */
  69                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  70                         RD_REG_WORD(&reg->hccr);
  71
  72                         ha->isp_ops->fw_dump(vha, 1);
  73                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  74                         break;
  75                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  76                         break;
  77
  78                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  79                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  80                         RD_REG_WORD(&reg->hccr);
  81
  82                         /* Get mailbox data. */
  83                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  84                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  85                                 qla2x00_mbx_completion(vha, mb[0]);
  86                                 status |= MBX_INTERRUPT;
  87                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  88                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  89                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  90                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  91                                 qla2x00_async_event(vha, rsp, mb);
  92                         } else {
  93                                 /*EMPTY*/
  94                                 DEBUG2(printk("scsi(%ld): Unrecognized "
  95                                     "interrupt type (%d).\n",
  96                                     vha->host_no, mb[0]));
  97                         }
  98                         /* Release mailbox registers. */
  99                         WRT_REG_WORD(&reg->semaphore, 0);
 100                         RD_REG_WORD(&reg->semaphore);
 101                 } else {
 102                         qla2x00_process_response_queue(rsp);
 103
 104                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 105                         RD_REG_WORD(&reg->hccr);
 106                 }
 107         }
 108         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 109
 110         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 111             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 112                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 113                 complete(&ha->mbx_intr_comp);
 114         }
 115
 116         return (IRQ_HANDLED);
 117 }
 118
 119 /**
 120  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 121  * @irq:
 122  * @dev_id: SCSI driver HA context
 123  *
 124  * Called by system whenever the host adapter generates an interrupt.
 125  *
 126  * Returns handled flag.
 127  */
 128 irqreturn_t
 129 qla2300_intr_handler(int irq, void *dev_id)
 130 {
 131         scsi_qla_host_t *vha;
 132         struct device_reg_2xxx __iomem *reg;
 133         int             status;
 134         unsigned long   iter;
 135         uint32_t        stat;
 136         uint16_t        hccr;
 137         uint16_t        mb[4];
 138         struct rsp_que *rsp;
 139         struct qla_hw_data *ha;
 140         unsigned long   flags;
 141
 142         rsp = (struct rsp_que *) dev_id;
 143         if (!rsp) {
 144                 printk(KERN_INFO
 145                     "%s(): NULL response queue pointer\n", __func__);
 146                 return (IRQ_NONE);
 147         }
 148
 149         ha = rsp->hw;
 150         reg = &ha->iobase->isp;
 151         status = 0;
 152
 153         spin_lock_irqsave(&ha->hardware_lock, flags);
 154         vha = pci_get_drvdata(ha->pdev);
 155         for (iter = 50; iter--; ) {
 156                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 157                 if (stat & HSR_RISC_PAUSED) {
 158                         if (unlikely(pci_channel_offline(ha->pdev)))
 159                                 break;
 160
 161                         hccr = RD_REG_WORD(&reg->hccr);
 162                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 163                                 qla_printk(KERN_INFO, ha, "Parity error -- "
 164                                     "HCCR=%x, Dumping firmware!\n", hccr);
 165                         else
 166                                 qla_printk(KERN_INFO, ha, "RISC paused -- "
 167                                     "HCCR=%x, Dumping firmware!\n", hccr);
 168
 169                         /*
 170                          * Issue a "HARD" reset in order for the RISC
 171                          * interrupt bit to be cleared.  Schedule a big
 172                          * hammmer to get out of the RISC PAUSED state.
 173                          */
 174                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 175                         RD_REG_WORD(&reg->hccr);
 176
 177                         ha->isp_ops->fw_dump(vha, 1);
 178                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 179                         break;
 180                 } else if ((stat & HSR_RISC_INT) == 0)
 181                         break;
 182
 183                 switch (stat & 0xff) {
 184                 case 0x1:
 185                 case 0x2:
 186                 case 0x10:
 187                 case 0x11:
 188                         qla2x00_mbx_completion(vha, MSW(stat));
 189                         status |= MBX_INTERRUPT;
 190
 191                         /* Release mailbox registers. */
 192                         WRT_REG_WORD(&reg->semaphore, 0);
 193                         break;
 194                 case 0x12:
 195                         mb[0] = MSW(stat);
 196                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 197                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 198                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 199                         qla2x00_async_event(vha, rsp, mb);
 200                         break;
 201                 case 0x13:
 202                         qla2x00_process_response_queue(rsp);
 203                         break;
 204                 case 0x15:
 205                         mb[0] = MBA_CMPLT_1_16BIT;
 206                         mb[1] = MSW(stat);
 207                         qla2x00_async_event(vha, rsp, mb);
 208                         break;
 209                 case 0x16:
 210                         mb[0] = MBA_SCSI_COMPLETION;
 211                         mb[1] = MSW(stat);
 212                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 213                         qla2x00_async_event(vha, rsp, mb);
 214                         break;
 215                 default:
 216                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
 217                             "(%d).\n",
 218                             vha->host_no, stat & 0xff));
 219                         break;
 220                 }
 221                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 222                 RD_REG_WORD_RELAXED(&reg->hccr);
 223         }
 224         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 225
 226         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 227             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 228                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 229                 complete(&ha->mbx_intr_comp);
 230         }
 231
 232         return (IRQ_HANDLED);
 233 }
 234
 235 /**
 236  * qla2x00_mbx_completion() - Process mailbox command completions.
 237  * @ha: SCSI driver HA context
 238  * @mb0: Mailbox0 register
 239  */
 240 static void
 241 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 242 {
 243         uint16_t        cnt;
 244         uint16_t __iomem *wptr;
 245         struct qla_hw_data *ha = vha->hw;
 246         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 247
 248         /* Load return mailbox registers. */
 249         ha->flags.mbox_int = 1;
 250         ha->mailbox_out[0] = mb0;
 251         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 252
 253         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 254                 if (IS_QLA2200(ha) && cnt == 8)
 255                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 256                 if (cnt == 4 || cnt == 5)
 257                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 258                 else
 259                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 260
 261                 wptr++;
 262         }
 263
 264         if (ha->mcp) {
 265                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
 266                     __func__, vha->host_no, ha->mcp->mb[0]));
 267         } else {
 268                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
 269                     __func__, vha->host_no));
 270         }
 271 }
 272
 273 static void
 274 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 275 {
 276         static char *event[] =
 277                 { "Complete", "Request Notification", "Time Extension" };
 278         int rval;
 279         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 280         uint16_t __iomem *wptr;
 281         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 282
 283         /* Seed data -- mailbox1 -> mailbox7. */
 284         wptr = (uint16_t __iomem *)&reg24->mailbox1;
 285         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 286                 mb[cnt] = RD_REG_WORD(wptr);
 287
 288         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 289             "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
 290             event[aen & 0xff],
 291             mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
 292
 293         /* Acknowledgement needed? [Notify && non-zero timeout]. */
 294         timeout = (descr >> 8) & 0xf;
 295         if (aen != MBA_IDC_NOTIFY || !timeout)
 296                 return;
 297
 298         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 299             "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
 300
 301         rval = qla2x00_post_idc_ack_work(vha, mb);
 302         if (rval != QLA_SUCCESS)
 303                 qla_printk(KERN_WARNING, vha->hw,
 304                     "IDC failed to post ACK.\n");
 305 }
 306
 307 /**
 308  * qla2x00_async_event() - Process aynchronous events.
 309  * @ha: SCSI driver HA context
 310  * @mb: Mailbox registers (0 - 3)
 311  */
 312 void
 313 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 314 {
 315 #define LS_UNKNOWN      2
 316         static char     *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
 317         char            *link_speed;
 318         uint16_t        handle_cnt;
 319         uint16_t        cnt, mbx;
 320         uint32_t        handles[5];
 321         struct qla_hw_data *ha = vha->hw;
 322         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 323         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 324         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 325         uint32_t        rscn_entry, host_pid;
 326         uint8_t         rscn_queue_index;
 327         unsigned long   flags;
 328
 329         /* Setup to process RIO completion. */
 330         handle_cnt = 0;
 331         if (IS_QLA8XXX_TYPE(ha))
 332                 goto skip_rio;
 333         switch (mb[0]) {
 334         case MBA_SCSI_COMPLETION:
 335                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 336                 handle_cnt = 1;
 337                 break;
 338         case MBA_CMPLT_1_16BIT:
 339                 handles[0] = mb[1];
 340                 handle_cnt = 1;
 341                 mb[0] = MBA_SCSI_COMPLETION;
 342                 break;
 343         case MBA_CMPLT_2_16BIT:
 344                 handles[0] = mb[1];
 345                 handles[1] = mb[2];
 346                 handle_cnt = 2;
 347                 mb[0] = MBA_SCSI_COMPLETION;
 348                 break;
 349         case MBA_CMPLT_3_16BIT:
 350                 handles[0] = mb[1];
 351                 handles[1] = mb[2];
 352                 handles[2] = mb[3];
 353                 handle_cnt = 3;
 354                 mb[0] = MBA_SCSI_COMPLETION;
 355                 break;
 356         case MBA_CMPLT_4_16BIT:
 357                 handles[0] = mb[1];
 358                 handles[1] = mb[2];
 359                 handles[2] = mb[3];
 360                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 361                 handle_cnt = 4;
 362                 mb[0] = MBA_SCSI_COMPLETION;
 363                 break;
 364         case MBA_CMPLT_5_16BIT:
 365                 handles[0] = mb[1];
 366                 handles[1] = mb[2];
 367                 handles[2] = mb[3];
 368                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 369                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 370                 handle_cnt = 5;
 371                 mb[0] = MBA_SCSI_COMPLETION;
 372                 break;
 373         case MBA_CMPLT_2_32BIT:
 374                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 375                 handles[1] = le32_to_cpu(
 376                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 377                     RD_MAILBOX_REG(ha, reg, 6));
 378                 handle_cnt = 2;
 379                 mb[0] = MBA_SCSI_COMPLETION;
 380                 break;
 381         default:
 382                 break;
 383         }
 384 skip_rio:
 385         switch (mb[0]) {
 386         case MBA_SCSI_COMPLETION:       /* Fast Post */
 387                 if (!vha->flags.online)
 388                         break;
 389
 390                 for (cnt = 0; cnt < handle_cnt; cnt++)
 391                         qla2x00_process_completed_request(vha, rsp->req,
 392                                 handles[cnt]);
 393                 break;
 394
 395         case MBA_RESET:                 /* Reset */
 396                 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
 397                         vha->host_no));
 398
 399                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 400                 break;
 401
 402         case MBA_SYSTEM_ERR:            /* System Error */
 403                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
 404                 qla_printk(KERN_INFO, ha,
 405                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 406                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 407
 408                 ha->isp_ops->fw_dump(vha, 1);
 409
 410                 if (IS_FWI2_CAPABLE(ha)) {
 411                         if (mb[1] == 0 && mb[2] == 0) {
 412                                 qla_printk(KERN_ERR, ha,
 413                                     "Unrecoverable Hardware Error: adapter "
 414                                     "marked OFFLINE!\n");
 415                                 vha->flags.online = 0;
 416                         } else {
 417                                 /* Check to see if MPI timeout occured */
 418                                 if ((mbx & MBX_3) && (ha->flags.port0))
 419                                         set_bit(MPI_RESET_NEEDED,
 420                                             &vha->dpc_flags);
 421
 422                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 423                         }
 424                 } else if (mb[1] == 0) {
 425                         qla_printk(KERN_INFO, ha,
 426                             "Unrecoverable Hardware Error: adapter marked "
 427                             "OFFLINE!\n");
 428                         vha->flags.online = 0;
 429                 } else
 430                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 431                 break;
 432
 433         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 434                 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
 435                     vha->host_no, mb[1]));
 436                 qla_printk(KERN_WARNING, ha,
 437                     "ISP Request Transfer Error (%x).\n", mb[1]);
 438
 439                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 440                 break;
 441
 442         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 443                 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
 444                     vha->host_no));
 445                 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
 446
 447                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 448                 break;
 449
 450         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 451                 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
 452                     vha->host_no));
 453                 break;
 454
 455         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 456                 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
 457                     mb[1]));
 458                 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
 459
 460                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 461                         atomic_set(&vha->loop_state, LOOP_DOWN);
 462                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 463                         qla2x00_mark_all_devices_lost(vha, 1);
 464                 }
 465
 466                 if (vha->vp_idx) {
 467                         atomic_set(&vha->vp_state, VP_FAILED);
 468                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 469                 }
 470
 471                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 472                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 473
 474                 vha->flags.management_server_logged_in = 0;
 475                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 476                 break;
 477
 478         case MBA_LOOP_UP:               /* Loop Up Event */
 479                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 480                         link_speed = link_speeds[0];
 481                         ha->link_data_rate = PORT_SPEED_1GB;
 482                 } else {
 483                         link_speed = link_speeds[LS_UNKNOWN];
 484                         if (mb[1] < 5)
 485                                 link_speed = link_speeds[mb[1]];
 486                         else if (mb[1] == 0x13)
 487                                 link_speed = link_speeds[5];
 488                         ha->link_data_rate = mb[1];
 489                 }
 490
 491                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
 492                     vha->host_no, link_speed));
 493                 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
 494                     link_speed);
 495
 496                 vha->flags.management_server_logged_in = 0;
 497                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 498                 break;
 499
 500         case MBA_LOOP_DOWN:             /* Loop Down Event */
 501                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
 502                 mbx = IS_QLA82XX(ha) ? RD_REG_WORD(&reg82->mailbox_out[4]) : mbx;
 503                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
 504                     "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
 505                     mbx));
 506                 qla_printk(KERN_INFO, ha,
 507                     "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
 508                     mbx);
 509
 510                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 511                         atomic_set(&vha->loop_state, LOOP_DOWN);
 512                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 513                         vha->device_flags |= DFLG_NO_CABLE;
 514                         qla2x00_mark_all_devices_lost(vha, 1);
 515                 }
 516
 517                 if (vha->vp_idx) {
 518                         atomic_set(&vha->vp_state, VP_FAILED);
 519                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 520                 }
 521
 522                 vha->flags.management_server_logged_in = 0;
 523                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 524                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 525                 break;
 526
 527         case MBA_LIP_RESET:             /* LIP reset occurred */
 528                 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
 529                     vha->host_no, mb[1]));
 530                 qla_printk(KERN_INFO, ha,
 531                     "LIP reset occurred (%x).\n", mb[1]);
 532
 533                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 534                         atomic_set(&vha->loop_state, LOOP_DOWN);
 535                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 536                         qla2x00_mark_all_devices_lost(vha, 1);
 537                 }
 538
 539                 if (vha->vp_idx) {
 540                         atomic_set(&vha->vp_state, VP_FAILED);
 541                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 542                 }
 543
 544                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 545
 546                 ha->operating_mode = LOOP;
 547                 vha->flags.management_server_logged_in = 0;
 548                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 549                 break;
 550
 551         /* case MBA_DCBX_COMPLETE: */
 552         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 553                 if (IS_QLA2100(ha))
 554                         break;
 555
 556                 if (IS_QLA8XXX_TYPE(ha)) {
 557                         DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
 558                             "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 559                         if (ha->notify_dcbx_comp)
 560                                 complete(&ha->dcbx_comp);
 561
 562                 } else
 563                         DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
 564                             "received.\n", vha->host_no));
 565
 566                 /*
 567                  * Until there's a transition from loop down to loop up, treat
 568                  * this as loop down only.
 569                  */
 570                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 571                         atomic_set(&vha->loop_state, LOOP_DOWN);
 572                         if (!atomic_read(&vha->loop_down_timer))
 573                                 atomic_set(&vha->loop_down_timer,
 574                                     LOOP_DOWN_TIME);
 575                         qla2x00_mark_all_devices_lost(vha, 1);
 576                 }
 577
 578                 if (vha->vp_idx) {
 579                         atomic_set(&vha->vp_state, VP_FAILED);
 580                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 581                 }
 582
 583                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 584                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 585
 586                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 587                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 588
 589                 ha->flags.gpsc_supported = 1;
 590                 vha->flags.management_server_logged_in = 0;
 591                 break;
 592
 593         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 594                 if (IS_QLA2100(ha))
 595                         break;
 596
 597                 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
 598                     "received.\n",
 599                     vha->host_no));
 600                 qla_printk(KERN_INFO, ha,
 601                     "Configuration change detected: value=%x.\n", mb[1]);
 602
 603                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 604                         atomic_set(&vha->loop_state, LOOP_DOWN);
 605                         if (!atomic_read(&vha->loop_down_timer))
 606                                 atomic_set(&vha->loop_down_timer,
 607                                     LOOP_DOWN_TIME);
 608                         qla2x00_mark_all_devices_lost(vha, 1);
 609                 }
 610
 611                 if (vha->vp_idx) {
 612                         atomic_set(&vha->vp_state, VP_FAILED);
 613                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 614                 }
 615
 616                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 617                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 618                 break;
 619
 620         case MBA_PORT_UPDATE:           /* Port database update */
 621                 /*
 622                  * Handle only global and vn-port update events
 623                  *
 624                  * Relevant inputs:
 625                  * mb[1] = N_Port handle of changed port
 626                  * OR 0xffff for global event
 627                  * mb[2] = New login state
 628                  * 7 = Port logged out
 629                  * mb[3] = LSB is vp_idx, 0xff = all vps
 630                  *
 631                  * Skip processing if:
 632                  *       Event is global, vp_idx is NOT all vps,
 633                  *           vp_idx does not match
 634                  *       Event is not global, vp_idx does not match
 635                  */
 636                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 637                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 638                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 639                         break;
 640
 641                 /* Global event -- port logout or port unavailable. */
 642                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 643                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 644                             vha->host_no));
 645                         DEBUG(printk(KERN_INFO
 646                             "scsi(%ld): Port unavailable %04x %04x %04x.\n",
 647                             vha->host_no, mb[1], mb[2], mb[3]));
 648
 649                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 650                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 651                                 atomic_set(&vha->loop_down_timer,
 652                                     LOOP_DOWN_TIME);
 653                                 vha->device_flags |= DFLG_NO_CABLE;
 654                                 qla2x00_mark_all_devices_lost(vha, 1);
 655                         }
 656
 657                         if (vha->vp_idx) {
 658                                 atomic_set(&vha->vp_state, VP_FAILED);
 659                                 fc_vport_set_state(vha->fc_vport,
 660                                     FC_VPORT_FAILED);
 661                                 qla2x00_mark_all_devices_lost(vha, 1);
 662                         }
 663
 664                         vha->flags.management_server_logged_in = 0;
 665                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 666                         break;
 667                 }
 668
 669                 /*
 670                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 671                  * event etc. earlier indicating loop is down) then process
 672                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 673                  */
 674                 atomic_set(&vha->loop_down_timer, 0);
 675                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 676                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 677                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
 678                             "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
 679                             mb[2], mb[3]));
 680                         break;
 681                 }
 682
 683                 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 684                     vha->host_no));
 685                 DEBUG(printk(KERN_INFO
 686                     "scsi(%ld): Port database changed %04x %04x %04x.\n",
 687                     vha->host_no, mb[1], mb[2], mb[3]));
 688
 689                 /*
 690                  * Mark all devices as missing so we will login again.
 691                  */
 692                 atomic_set(&vha->loop_state, LOOP_UP);
 693
 694                 qla2x00_mark_all_devices_lost(vha, 1);
 695
 696                 vha->flags.rscn_queue_overflow = 1;
 697
 698                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 699                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 700                 break;
 701
 702         case MBA_RSCN_UPDATE:           /* State Change Registration */
 703                 /* Check if the Vport has issued a SCR */
 704                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 705                         break;
 706                 /* Only handle SCNs for our Vport index. */
 707                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 708                         break;
 709
 710                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
 711                     vha->host_no));
 712                 DEBUG(printk(KERN_INFO
 713                     "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
 714                     vha->host_no, mb[1], mb[2], mb[3]));
 715
 716                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 717                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 718                                 | vha->d_id.b.al_pa;
 719                 if (rscn_entry == host_pid) {
 720                         DEBUG(printk(KERN_INFO
 721                             "scsi(%ld): Ignoring RSCN update to local host "
 722                             "port ID (%06x)\n",
 723                             vha->host_no, host_pid));
 724                         break;
 725                 }
 726
 727                 /* Ignore reserved bits from RSCN-payload. */
 728                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 729                 rscn_queue_index = vha->rscn_in_ptr + 1;
 730                 if (rscn_queue_index == MAX_RSCN_COUNT)
 731                         rscn_queue_index = 0;
 732                 if (rscn_queue_index != vha->rscn_out_ptr) {
 733                         vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
 734                         vha->rscn_in_ptr = rscn_queue_index;
 735                 } else {
 736                         vha->flags.rscn_queue_overflow = 1;
 737                 }
 738
 739                 atomic_set(&vha->loop_state, LOOP_UPDATE);
 740                 atomic_set(&vha->loop_down_timer, 0);
 741                 vha->flags.management_server_logged_in = 0;
 742
 743                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 744                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 745                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 746                 break;
 747
 748         /* case MBA_RIO_RESPONSE: */
 749         case MBA_ZIO_RESPONSE:
 750                 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
 751                     vha->host_no));
 752
 753                 if (IS_FWI2_CAPABLE(ha))
 754                         qla24xx_process_response_queue(vha, rsp);
 755                 else
 756                         qla2x00_process_response_queue(rsp);
 757                 break;
 758
 759         case MBA_DISCARD_RND_FRAME:
 760                 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
 761                     "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
 762                 break;
 763
 764         case MBA_TRACE_NOTIFICATION:
 765                 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
 766                 vha->host_no, mb[1], mb[2]));
 767                 break;
 768
 769         case MBA_ISP84XX_ALERT:
 770                 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
 771                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 772
 773                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 774                 switch (mb[1]) {
 775                 case A84_PANIC_RECOVERY:
 776                         qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
 777                             "%04x %04x\n", mb[2], mb[3]);
 778                         break;
 779                 case A84_OP_LOGIN_COMPLETE:
 780                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 781                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 782                             "firmware version %x\n", ha->cs84xx->op_fw_version));
 783                         break;
 784                 case A84_DIAG_LOGIN_COMPLETE:
 785                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 786                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 787                             "diagnostic firmware version %x\n",
 788                             ha->cs84xx->diag_fw_version));
 789                         break;
 790                 case A84_GOLD_LOGIN_COMPLETE:
 791                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 792                         ha->cs84xx->fw_update = 1;
 793                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
 794                             "firmware version %x\n",
 795                             ha->cs84xx->gold_fw_version));
 796                         break;
 797                 default:
 798                         qla_printk(KERN_ERR, ha,
 799                             "Alert 84xx: Invalid Alert %04x %04x %04x\n",
 800                             mb[1], mb[2], mb[3]);
 801                 }
 802                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
 803                 break;
 804         case MBA_DCBX_START:
 805                 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
 806                     vha->host_no, mb[1], mb[2], mb[3]));
 807                 break;
 808         case MBA_DCBX_PARAM_UPDATE:
 809                 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
 810                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 811                 break;
 812         case MBA_FCF_CONF_ERR:
 813                 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
 814                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 815                 break;
 816         case MBA_IDC_COMPLETE:
 817         case MBA_IDC_NOTIFY:
 818         case MBA_IDC_TIME_EXT:
 819                 qla81xx_idc_event(vha, mb[0], mb[1]);
 820                 break;
 821         }
 822
 823         if (!vha->vp_idx && ha->num_vhosts)
 824                 qla2x00_alert_all_vps(rsp, mb);
 825 }
 826
 827 /**
 828  * qla2x00_process_completed_request() - Process a Fast Post response.
 829  * @ha: SCSI driver HA context
 830  * @index: SRB index
 831  */
 832 static void
 833 qla2x00_process_completed_request(struct scsi_qla_host *vha,
 834                                 struct req_que *req, uint32_t index)
 835 {
 836         srb_t *sp;
 837         struct qla_hw_data *ha = vha->hw;
 838
 839         /* Validate handle. */
 840         if (index >= MAX_OUTSTANDING_COMMANDS) {
 841                 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
 842                     vha->host_no, index));
 843                 qla_printk(KERN_WARNING, ha,
 844                     "Invalid SCSI completion handle %d.\n", index);
 845
 846                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 847                 return;
 848         }
 849
 850         sp = req->outstanding_cmds[index];
 851         if (sp) {
 852                 /* Free outstanding command slot. */
 853                 req->outstanding_cmds[index] = NULL;
 854
 855                 /* Save ISP completion status */
 856                 sp->cmd->result = DID_OK << 16;
 857                 qla2x00_sp_compl(ha, sp);
 858         } else {
 859                 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
 860                         " handle(0x%x)\n", vha->host_no, req->id, index));
 861                 qla_printk(KERN_WARNING, ha,
 862                     "Invalid ISP SCSI completion handle\n");
 863
 864                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 865         }
 866 }
 867
 868 static srb_t *
 869 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 870     struct req_que *req, void *iocb)
 871 {
 872         struct qla_hw_data *ha = vha->hw;
 873         sts_entry_t *pkt = iocb;
 874         srb_t *sp = NULL;
 875         uint16_t index;
 876
 877         index = LSW(pkt->handle);
 878         if (index >= MAX_OUTSTANDING_COMMANDS) {
 879                 qla_printk(KERN_WARNING, ha,
 880                     "%s: Invalid completion handle (%x).\n", func, index);
 881                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 882                 goto done;
 883         }
 884         sp = req->outstanding_cmds[index];
 885         if (!sp) {
 886                 qla_printk(KERN_WARNING, ha,
 887                     "%s: Invalid completion handle (%x) -- timed-out.\n", func,
 888                     index);
 889                 return sp;
 890         }
 891         if (sp->handle != index) {
 892                 qla_printk(KERN_WARNING, ha,
 893                     "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
 894                     index);
 895                 return NULL;
 896         }
 897
 898         req->outstanding_cmds[index] = NULL;
 899
 900 done:
 901         return sp;
 902 }
 903
 904 static void
 905 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
 906     struct mbx_entry *mbx)
 907 {
 908         const char func[] = "MBX-IOCB";
 909         const char *type;
 910         fc_port_t *fcport;
 911         srb_t *sp;
 912         struct srb_iocb *lio;
 913         struct srb_ctx *ctx;
 914         uint16_t *data;
 915         uint16_t status;
 916
 917         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
 918         if (!sp)
 919                 return;
 920
 921         ctx = sp->ctx;
 922         lio = ctx->u.iocb_cmd;
 923         type = ctx->name;
 924         fcport = sp->fcport;
 925         data = lio->u.logio.data;
 926
 927         data[0] = MBS_COMMAND_ERROR;
 928         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
 929             QLA_LOGIO_LOGIN_RETRIED : 0;
 930         if (mbx->entry_status) {
 931                 DEBUG2(printk(KERN_WARNING
 932                     "scsi(%ld:%x): Async-%s error entry - portid=%02x%02x%02x "
 933                     "entry-status=%x status=%x state-flag=%x "
 934                     "status-flags=%x.\n",
 935                     fcport->vha->host_no, sp->handle, type,
 936                     fcport->d_id.b.domain, fcport->d_id.b.area,
 937                     fcport->d_id.b.al_pa, mbx->entry_status,
 938                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
 939                     le16_to_cpu(mbx->status_flags)));
 940
 941                 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
 942
 943                 goto logio_done;
 944         }
 945
 946         status = le16_to_cpu(mbx->status);
 947         if (status == 0x30 && ctx->type == SRB_LOGIN_CMD &&
 948             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
 949                 status = 0;
 950         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
 951                 DEBUG2(printk(KERN_DEBUG
 952                     "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
 953                     "mbx1=%x.\n",
 954                     fcport->vha->host_no, sp->handle, type,
 955                     fcport->d_id.b.domain, fcport->d_id.b.area,
 956                     fcport->d_id.b.al_pa, le16_to_cpu(mbx->mb1)));
 957
 958                 data[0] = MBS_COMMAND_COMPLETE;
 959                 if (ctx->type == SRB_LOGIN_CMD) {
 960                         fcport->port_type = FCT_TARGET;
 961                         if (le16_to_cpu(mbx->mb1) & BIT_0)
 962                                 fcport->port_type = FCT_INITIATOR;
 963                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
 964                                 fcport->flags |= FCF_FCP2_DEVICE;
 965                 }
 966                 goto logio_done;
 967         }
 968
 969         data[0] = le16_to_cpu(mbx->mb0);
 970         switch (data[0]) {
 971         case MBS_PORT_ID_USED:
 972                 data[1] = le16_to_cpu(mbx->mb1);
 973                 break;
 974         case MBS_LOOP_ID_USED:
 975                 break;
 976         default:
 977                 data[0] = MBS_COMMAND_ERROR;
 978                 break;
 979         }
 980
 981         DEBUG2(printk(KERN_WARNING
 982             "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x status=%x "
 983             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n",
 984             fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
 985             fcport->d_id.b.area, fcport->d_id.b.al_pa, status,
 986             le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
 987             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
 988             le16_to_cpu(mbx->mb7)));
 989
 990 logio_done:
 991         lio->done(sp);
 992 }
 993
 994 static void
 995 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
 996     sts_entry_t *pkt, int iocb_type)
 997 {
 998         const char func[] = "CT_IOCB";
 999         const char *type;
1000         struct qla_hw_data *ha = vha->hw;
1001         srb_t *sp;
1002         struct srb_ctx *sp_bsg;
1003         struct fc_bsg_job *bsg_job;
1004         uint16_t comp_status;
1005
1006         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1007         if (!sp)
1008                 return;
1009
1010         sp_bsg = sp->ctx;
1011         bsg_job = sp_bsg->u.bsg_job;
1012
1013         type = NULL;
1014         switch (sp_bsg->type) {
1015         case SRB_CT_CMD:
1016                 type = "ct pass-through";
1017                 break;
1018         default:
1019                 qla_printk(KERN_WARNING, ha,
1020                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1021                     sp_bsg->type);
1022                 return;
1023         }
1024
1025         comp_status = le16_to_cpu(pkt->comp_status);
1026
1027         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1028          * fc payload  to the caller
1029          */
1030         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1031         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1032
1033         if (comp_status != CS_COMPLETE) {
1034                 if (comp_status == CS_DATA_UNDERRUN) {
1035                         bsg_job->reply->result = DID_OK << 16;
1036                         bsg_job->reply->reply_payload_rcv_len =
1037                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1038
1039                         DEBUG2(qla_printk(KERN_WARNING, ha,
1040                             "scsi(%ld): CT pass-through-%s error "
1041                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1042                             vha->host_no, type, comp_status,
1043                             bsg_job->reply->reply_payload_rcv_len));
1044                 } else {
1045                         DEBUG2(qla_printk(KERN_WARNING, ha,
1046                             "scsi(%ld): CT pass-through-%s error "
1047                             "comp_status-status=0x%x.\n",
1048                             vha->host_no, type, comp_status));
1049                         bsg_job->reply->result = DID_ERROR << 16;
1050                         bsg_job->reply->reply_payload_rcv_len = 0;
1051                 }
1052                 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1053         } else {
1054                 bsg_job->reply->result =  DID_OK << 16;;
1055                 bsg_job->reply->reply_payload_rcv_len =
1056                     bsg_job->reply_payload.payload_len;
1057                 bsg_job->reply_len = 0;
1058         }
1059
1060         dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
1061             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1062
1063         dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
1064             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1065
1066         if (sp_bsg->type == SRB_ELS_CMD_HST || sp_bsg->type == SRB_CT_CMD)
1067                 kfree(sp->fcport);
1068
1069         kfree(sp->ctx);
1070         mempool_free(sp, ha->srb_mempool);
1071         bsg_job->job_done(bsg_job);
1072 }
1073
1074 static void
1075 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1076     struct sts_entry_24xx *pkt, int iocb_type)
1077 {
1078         const char func[] = "ELS_CT_IOCB";
1079         const char *type;
1080         struct qla_hw_data *ha = vha->hw;
1081         srb_t *sp;
1082         struct srb_ctx *sp_bsg;
1083         struct fc_bsg_job *bsg_job;
1084         uint16_t comp_status;
1085         uint32_t fw_status[3];
1086         uint8_t* fw_sts_ptr;
1087
1088         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1089         if (!sp)
1090                 return;
1091         sp_bsg = sp->ctx;
1092         bsg_job = sp_bsg->u.bsg_job;
1093
1094         type = NULL;
1095         switch (sp_bsg->type) {
1096         case SRB_ELS_CMD_RPT:
1097         case SRB_ELS_CMD_HST:
1098                 type = "els";
1099                 break;
1100         case SRB_CT_CMD:
1101                 type = "ct pass-through";
1102                 break;
1103         default:
1104                 qla_printk(KERN_WARNING, ha,
1105                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1106                     sp_bsg->type);
1107                 return;
1108         }
1109
1110         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1111         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1112         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1113
1114         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1115          * fc payload  to the caller
1116          */
1117         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1118         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1119
1120         if (comp_status != CS_COMPLETE) {
1121                 if (comp_status == CS_DATA_UNDERRUN) {
1122                         bsg_job->reply->result = DID_OK << 16;
1123                         bsg_job->reply->reply_payload_rcv_len =
1124                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
1125
1126                         DEBUG2(qla_printk(KERN_WARNING, ha,
1127                             "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1128                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1129                                 vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
1130                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
1131                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1132                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1133                 }
1134                 else {
1135                         DEBUG2(qla_printk(KERN_WARNING, ha,
1136                             "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1137                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1138                                 vha->host_no, sp->handle, type, comp_status,
1139                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
1140                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
1141                         bsg_job->reply->result = DID_ERROR << 16;
1142                         bsg_job->reply->reply_payload_rcv_len = 0;
1143                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1144                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1145                 }
1146                 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1147         }
1148         else {
1149                 bsg_job->reply->result =  DID_OK << 16;;
1150                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1151                 bsg_job->reply_len = 0;
1152         }
1153
1154         dma_unmap_sg(&ha->pdev->dev,
1155             bsg_job->request_payload.sg_list,
1156             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1157         dma_unmap_sg(&ha->pdev->dev,
1158             bsg_job->reply_payload.sg_list,
1159             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1160         if ((sp_bsg->type == SRB_ELS_CMD_HST) ||
1161             (sp_bsg->type == SRB_CT_CMD))
1162                 kfree(sp->fcport);
1163         kfree(sp->ctx);
1164         mempool_free(sp, ha->srb_mempool);
1165         bsg_job->job_done(bsg_job);
1166 }
1167
1168 static void
1169 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1170     struct logio_entry_24xx *logio)
1171 {
1172         const char func[] = "LOGIO-IOCB";
1173         const char *type;
1174         fc_port_t *fcport;
1175         srb_t *sp;
1176         struct srb_iocb *lio;
1177         struct srb_ctx *ctx;
1178         uint16_t *data;
1179         uint32_t iop[2];
1180
1181         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1182         if (!sp)
1183                 return;
1184
1185         ctx = sp->ctx;
1186         lio = ctx->u.iocb_cmd;
1187         type = ctx->name;
1188         fcport = sp->fcport;
1189         data = lio->u.logio.data;
1190
1191         data[0] = MBS_COMMAND_ERROR;
1192         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1193                 QLA_LOGIO_LOGIN_RETRIED : 0;
1194         if (logio->entry_status) {
1195                 DEBUG2(printk(KERN_WARNING
1196                     "scsi(%ld:%x): Async-%s error entry - "
1197                     "portid=%02x%02x%02x entry-status=%x.\n",
1198                     fcport->vha->host_no, sp->handle, type,
1199                     fcport->d_id.b.domain, fcport->d_id.b.area,
1200                     fcport->d_id.b.al_pa, logio->entry_status));
1201                 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1202
1203                 goto logio_done;
1204         }
1205
1206         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1207                 DEBUG2(printk(KERN_DEBUG
1208                     "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
1209                     "iop0=%x.\n",
1210                     fcport->vha->host_no, sp->handle, type,
1211                     fcport->d_id.b.domain, fcport->d_id.b.area,
1212                     fcport->d_id.b.al_pa,
1213                     le32_to_cpu(logio->io_parameter[0])));
1214
1215                 data[0] = MBS_COMMAND_COMPLETE;
1216                 if (ctx->type != SRB_LOGIN_CMD)
1217                         goto logio_done;
1218
1219                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1220                 if (iop[0] & BIT_4) {
1221                         fcport->port_type = FCT_TARGET;
1222                         if (iop[0] & BIT_8)
1223                                 fcport->flags |= FCF_FCP2_DEVICE;
1224                 } else if (iop[0] & BIT_5)
1225                         fcport->port_type = FCT_INITIATOR;
1226
1227                 if (logio->io_parameter[7] || logio->io_parameter[8])
1228                         fcport->supported_classes |= FC_COS_CLASS2;
1229                 if (logio->io_parameter[9] || logio->io_parameter[10])
1230                         fcport->supported_classes |= FC_COS_CLASS3;
1231
1232                 goto logio_done;
1233         }
1234
1235         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1236         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1237         switch (iop[0]) {
1238         case LSC_SCODE_PORTID_USED:
1239                 data[0] = MBS_PORT_ID_USED;
1240                 data[1] = LSW(iop[1]);
1241                 break;
1242         case LSC_SCODE_NPORT_USED:
1243                 data[0] = MBS_LOOP_ID_USED;
1244                 break;
1245         default:
1246                 data[0] = MBS_COMMAND_ERROR;
1247                 break;
1248         }
1249
1250         DEBUG2(printk(KERN_WARNING
1251             "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x comp=%x "
1252             "iop0=%x iop1=%x.\n",
1253             fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
1254             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1255             le16_to_cpu(logio->comp_status),
1256             le32_to_cpu(logio->io_parameter[0]),
1257             le32_to_cpu(logio->io_parameter[1])));
1258
1259 logio_done:
1260         lio->done(sp);
1261 }
1262
1263 static void
1264 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1265     struct tsk_mgmt_entry *tsk)
1266 {
1267         const char func[] = "TMF-IOCB";
1268         const char *type;
1269         fc_port_t *fcport;
1270         srb_t *sp;
1271         struct srb_iocb *iocb;
1272         struct srb_ctx *ctx;
1273         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1274         int error = 1;
1275
1276         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1277         if (!sp)
1278                 return;
1279
1280         ctx = sp->ctx;
1281         iocb = ctx->u.iocb_cmd;
1282         type = ctx->name;
1283         fcport = sp->fcport;
1284
1285         if (sts->entry_status) {
1286                 DEBUG2(printk(KERN_WARNING
1287                     "scsi(%ld:%x): Async-%s error - entry-status(%x).\n",
1288                     fcport->vha->host_no, sp->handle, type,
1289                     sts->entry_status));
1290         } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1291                 DEBUG2(printk(KERN_WARNING
1292                     "scsi(%ld:%x): Async-%s error - completion status(%x).\n",
1293                     fcport->vha->host_no, sp->handle, type,
1294                     sts->comp_status));
1295         } else if (!(le16_to_cpu(sts->scsi_status) &
1296             SS_RESPONSE_INFO_LEN_VALID)) {
1297                 DEBUG2(printk(KERN_WARNING
1298                     "scsi(%ld:%x): Async-%s error - no response info(%x).\n",
1299                     fcport->vha->host_no, sp->handle, type,
1300                     sts->scsi_status));
1301         } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1302                 DEBUG2(printk(KERN_WARNING
1303                     "scsi(%ld:%x): Async-%s error - not enough response(%d).\n",
1304                     fcport->vha->host_no, sp->handle, type,
1305                     sts->rsp_data_len));
1306         } else if (sts->data[3]) {
1307                 DEBUG2(printk(KERN_WARNING
1308                     "scsi(%ld:%x): Async-%s error - response(%x).\n",
1309                     fcport->vha->host_no, sp->handle, type,
1310                     sts->data[3]));
1311         } else {
1312                 error = 0;
1313         }
1314
1315         if (error) {
1316                 iocb->u.tmf.data = error;
1317                 DEBUG2(qla2x00_dump_buffer((uint8_t *)sts, sizeof(*sts)));
1318         }
1319
1320         iocb->done(sp);
1321 }
1322
1323 /**
1324  * qla2x00_process_response_queue() - Process response queue entries.
1325  * @ha: SCSI driver HA context
1326  */
1327 void
1328 qla2x00_process_response_queue(struct rsp_que *rsp)
1329 {
1330         struct scsi_qla_host *vha;
1331         struct qla_hw_data *ha = rsp->hw;
1332         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1333         sts_entry_t     *pkt;
1334         uint16_t        handle_cnt;
1335         uint16_t        cnt;
1336
1337         vha = pci_get_drvdata(ha->pdev);
1338
1339         if (!vha->flags.online)
1340                 return;
1341
1342         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1343                 pkt = (sts_entry_t *)rsp->ring_ptr;
1344
1345                 rsp->ring_index++;
1346                 if (rsp->ring_index == rsp->length) {
1347                         rsp->ring_index = 0;
1348                         rsp->ring_ptr = rsp->ring;
1349                 } else {
1350                         rsp->ring_ptr++;
1351                 }
1352
1353                 if (pkt->entry_status != 0) {
1354                         DEBUG3(printk(KERN_INFO
1355                             "scsi(%ld): Process error entry.\n", vha->host_no));
1356
1357                         qla2x00_error_entry(vha, rsp, pkt);
1358                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1359                         wmb();
1360                         continue;
1361                 }
1362
1363                 switch (pkt->entry_type) {
1364                 case STATUS_TYPE:
1365                         qla2x00_status_entry(vha, rsp, pkt);
1366                         break;
1367                 case STATUS_TYPE_21:
1368                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1369                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1370                                 qla2x00_process_completed_request(vha, rsp->req,
1371                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1372                         }
1373                         break;
1374                 case STATUS_TYPE_22:
1375                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1376                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1377                                 qla2x00_process_completed_request(vha, rsp->req,
1378                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1379                         }
1380                         break;
1381                 case STATUS_CONT_TYPE:
1382                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1383                         break;
1384                 case MBX_IOCB_TYPE:
1385                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1386                             (struct mbx_entry *)pkt);
1387                         break;
1388                 case CT_IOCB_TYPE:
1389                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1390                         break;
1391                 default:
1392                         /* Type Not Supported. */
1393                         DEBUG4(printk(KERN_WARNING
1394                             "scsi(%ld): Received unknown response pkt type %x "
1395                             "entry status=%x.\n",
1396                             vha->host_no, pkt->entry_type, pkt->entry_status));
1397                         break;
1398                 }
1399                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1400                 wmb();
1401         }
1402
1403         /* Adjust ring index */
1404         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1405 }
1406
1407 static inline void
1408
1409 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1410     uint32_t sense_len, struct rsp_que *rsp)
1411 {
1412         struct scsi_cmnd *cp = sp->cmd;
1413
1414         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1415                 sense_len = SCSI_SENSE_BUFFERSIZE;
1416
1417         sp->request_sense_length = sense_len;
1418         sp->request_sense_ptr = cp->sense_buffer;
1419         if (sp->request_sense_length > par_sense_len)
1420                 sense_len = par_sense_len;
1421
1422         memcpy(cp->sense_buffer, sense_data, sense_len);
1423
1424         sp->request_sense_ptr += sense_len;
1425         sp->request_sense_length -= sense_len;
1426         if (sp->request_sense_length != 0)
1427                 rsp->status_srb = sp;
1428
1429         DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1430             "cmd=%p\n", __func__, sp->fcport->vha->host_no,
1431             cp->device->channel, cp->device->id, cp->device->lun, cp));
1432         if (sense_len)
1433                 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1434 }
1435
1436 struct scsi_dif_tuple {
1437         __be16 guard;       /* Checksum */
1438         __be16 app_tag;         /* APPL identifer */
1439         __be32 ref_tag;         /* Target LBA or indirect LBA */
1440 };
1441
1442 /*
1443  * Checks the guard or meta-data for the type of error
1444  * detected by the HBA. In case of errors, we set the
1445  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1446  * to indicate to the kernel that the HBA detected error.
1447  */
1448 static inline void
1449 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1450 {
1451         struct scsi_cmnd *cmd = sp->cmd;
1452         struct scsi_dif_tuple   *ep =
1453                         (struct scsi_dif_tuple *)&sts24->data[20];
1454         struct scsi_dif_tuple   *ap =
1455                         (struct scsi_dif_tuple *)&sts24->data[12];
1456         uint32_t        e_ref_tag, a_ref_tag;
1457         uint16_t        e_app_tag, a_app_tag;
1458         uint16_t        e_guard, a_guard;
1459
1460         e_ref_tag = be32_to_cpu(ep->ref_tag);
1461         a_ref_tag = be32_to_cpu(ap->ref_tag);
1462         e_app_tag = be16_to_cpu(ep->app_tag);
1463         a_app_tag = be16_to_cpu(ap->app_tag);
1464         e_guard = be16_to_cpu(ep->guard);
1465         a_guard = be16_to_cpu(ap->guard);
1466
1467         DEBUG18(printk(KERN_DEBUG
1468             "%s(): iocb(s) %p Returned STATUS\n", __func__, sts24));
1469
1470         DEBUG18(printk(KERN_ERR "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1471             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1472             " tag=0x%x, act guard=0x%x, exp guard=0x%x\n",
1473             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1474             a_app_tag, e_app_tag, a_guard, e_guard));
1475
1476
1477         /* check guard */
1478         if (e_guard != a_guard) {
1479                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1480                     0x10, 0x1);
1481                 set_driver_byte(cmd, DRIVER_SENSE);
1482                 set_host_byte(cmd, DID_ABORT);
1483                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1484                 return;
1485         }
1486
1487         /* check appl tag */
1488         if (e_app_tag != a_app_tag) {
1489                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1490                     0x10, 0x2);
1491                 set_driver_byte(cmd, DRIVER_SENSE);
1492                 set_host_byte(cmd, DID_ABORT);
1493                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1494                 return;
1495         }
1496
1497         /* check ref tag */
1498         if (e_ref_tag != a_ref_tag) {
1499                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1500                     0x10, 0x3);
1501                 set_driver_byte(cmd, DRIVER_SENSE);
1502                 set_host_byte(cmd, DID_ABORT);
1503                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1504                 return;
1505         }
1506 }
1507
1508 /**
1509  * qla2x00_status_entry() - Process a Status IOCB entry.
1510  * @ha: SCSI driver HA context
1511  * @pkt: Entry pointer
1512  */
1513 static void
1514 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1515 {
1516         srb_t           *sp;
1517         fc_port_t       *fcport;
1518         struct scsi_cmnd *cp;
1519         sts_entry_t *sts;
1520         struct sts_entry_24xx *sts24;
1521         uint16_t        comp_status;
1522         uint16_t        scsi_status;
1523         uint16_t        ox_id;
1524         uint8_t         lscsi_status;
1525         int32_t         resid;
1526         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1527             fw_resid_len;
1528         uint8_t         *rsp_info, *sense_data;
1529         struct qla_hw_data *ha = vha->hw;
1530         uint32_t handle;
1531         uint16_t que;
1532         struct req_que *req;
1533         int logit = 1;
1534
1535         sts = (sts_entry_t *) pkt;
1536         sts24 = (struct sts_entry_24xx *) pkt;
1537         if (IS_FWI2_CAPABLE(ha)) {
1538                 comp_status = le16_to_cpu(sts24->comp_status);
1539                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1540         } else {
1541                 comp_status = le16_to_cpu(sts->comp_status);
1542                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1543         }
1544         handle = (uint32_t) LSW(sts->handle);
1545         que = MSW(sts->handle);
1546         req = ha->req_q_map[que];
1547
1548         /* Fast path completion. */
1549         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1550                 qla2x00_process_completed_request(vha, req, handle);
1551
1552                 return;
1553         }
1554
1555         /* Validate handle. */
1556         if (handle < MAX_OUTSTANDING_COMMANDS) {
1557                 sp = req->outstanding_cmds[handle];
1558                 req->outstanding_cmds[handle] = NULL;
1559         } else
1560                 sp = NULL;
1561
1562         if (sp == NULL) {
1563                 qla_printk(KERN_WARNING, ha,
1564                     "scsi(%ld): Invalid status handle (0x%x).\n", vha->host_no,
1565                     sts->handle);
1566
1567                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1568                 qla2xxx_wake_dpc(vha);
1569                 return;
1570         }
1571         cp = sp->cmd;
1572         if (cp == NULL) {
1573                 qla_printk(KERN_WARNING, ha,
1574                     "scsi(%ld): Command already returned (0x%x/%p).\n",
1575                     vha->host_no, sts->handle, sp);
1576
1577                 return;
1578         }
1579
1580         lscsi_status = scsi_status & STATUS_MASK;
1581
1582         fcport = sp->fcport;
1583
1584         ox_id = 0;
1585         sense_len = par_sense_len = rsp_info_len = resid_len =
1586             fw_resid_len = 0;
1587         if (IS_FWI2_CAPABLE(ha)) {
1588                 if (scsi_status & SS_SENSE_LEN_VALID)
1589                         sense_len = le32_to_cpu(sts24->sense_len);
1590                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1591                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1592                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1593                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1594                 if (comp_status == CS_DATA_UNDERRUN)
1595                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1596                 rsp_info = sts24->data;
1597                 sense_data = sts24->data;
1598                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1599                 ox_id = le16_to_cpu(sts24->ox_id);
1600                 par_sense_len = sizeof(sts24->data);
1601         } else {
1602                 if (scsi_status & SS_SENSE_LEN_VALID)
1603                         sense_len = le16_to_cpu(sts->req_sense_length);
1604                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1605                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1606                 resid_len = le32_to_cpu(sts->residual_length);
1607                 rsp_info = sts->rsp_info;
1608                 sense_data = sts->req_sense_data;
1609                 par_sense_len = sizeof(sts->req_sense_data);
1610         }
1611
1612         /* Check for any FCP transport errors. */
1613         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1614                 /* Sense data lies beyond any FCP RESPONSE data. */
1615                 if (IS_FWI2_CAPABLE(ha)) {
1616                         sense_data += rsp_info_len;
1617                         par_sense_len -= rsp_info_len;
1618                 }
1619                 if (rsp_info_len > 3 && rsp_info[3]) {
1620                         DEBUG2(qla_printk(KERN_INFO, ha,
1621                             "scsi(%ld:%d:%d): FCP I/O protocol failure "
1622                             "(0x%x/0x%x).\n", vha->host_no, cp->device->id,
1623                             cp->device->lun, rsp_info_len, rsp_info[3]));
1624
1625                         cp->result = DID_BUS_BUSY << 16;
1626                         goto out;
1627                 }
1628         }
1629
1630         /* Check for overrun. */
1631         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1632             scsi_status & SS_RESIDUAL_OVER)
1633                 comp_status = CS_DATA_OVERRUN;
1634
1635         /*
1636          * Based on Host and scsi status generate status code for Linux
1637          */
1638         switch (comp_status) {
1639         case CS_COMPLETE:
1640         case CS_QUEUE_FULL:
1641                 if (scsi_status == 0) {
1642                         cp->result = DID_OK << 16;
1643                         break;
1644                 }
1645                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1646                         resid = resid_len;
1647                         scsi_set_resid(cp, resid);
1648
1649                         if (!lscsi_status &&
1650                             ((unsigned)(scsi_bufflen(cp) - resid) <
1651                              cp->underflow)) {
1652                                 qla_printk(KERN_INFO, ha,
1653                                     "scsi(%ld:%d:%d): Mid-layer underflow "
1654                                     "detected (0x%x of 0x%x bytes).\n",
1655                                     vha->host_no, cp->device->id,
1656                                     cp->device->lun, resid, scsi_bufflen(cp));
1657
1658                                 cp->result = DID_ERROR << 16;
1659                                 break;
1660                         }
1661                 }
1662                 cp->result = DID_OK << 16 | lscsi_status;
1663
1664                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1665                         DEBUG2(qla_printk(KERN_INFO, ha,
1666                             "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1667                             vha->host_no, cp->device->id, cp->device->lun));
1668                         break;
1669                 }
1670                 logit = 0;
1671                 if (lscsi_status != SS_CHECK_CONDITION)
1672                         break;
1673
1674                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1675                 if (!(scsi_status & SS_SENSE_LEN_VALID))
1676                         break;
1677
1678                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
1679                     rsp);
1680                 break;
1681
1682         case CS_DATA_UNDERRUN:
1683                 /* Use F/W calculated residual length. */
1684                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1685                 scsi_set_resid(cp, resid);
1686                 if (scsi_status & SS_RESIDUAL_UNDER) {
1687                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1688                                 DEBUG2(qla_printk(KERN_INFO, ha,
1689                                     "scsi(%ld:%d:%d) Dropped frame(s) detected "
1690                                     "(0x%x of 0x%x bytes).\n", vha->host_no,
1691                                     cp->device->id, cp->device->lun, resid,
1692                                     scsi_bufflen(cp)));
1693
1694                                 cp->result = DID_ERROR << 16 | lscsi_status;
1695                                 break;
1696                         }
1697
1698                         if (!lscsi_status &&
1699                             ((unsigned)(scsi_bufflen(cp) - resid) <
1700                             cp->underflow)) {
1701                                 qla_printk(KERN_INFO, ha,
1702                                     "scsi(%ld:%d:%d): Mid-layer underflow "
1703                                     "detected (0x%x of 0x%x bytes).\n",
1704                                     vha->host_no, cp->device->id,
1705                                     cp->device->lun, resid, scsi_bufflen(cp));
1706
1707                                 cp->result = DID_ERROR << 16;
1708                                 break;
1709                         }
1710                 } else {
1711                         DEBUG2(qla_printk(KERN_INFO, ha,
1712                             "scsi(%ld:%d:%d) Dropped frame(s) detected (0x%x "
1713                             "of 0x%x bytes).\n", vha->host_no, cp->device->id,
1714                             cp->device->lun, resid, scsi_bufflen(cp)));
1715
1716                         cp->result = DID_ERROR << 16 | lscsi_status;
1717                         goto check_scsi_status;
1718                 }
1719
1720                 cp->result = DID_OK << 16 | lscsi_status;
1721                 logit = 0;
1722
1723 check_scsi_status:
1724                 /*
1725                  * Check to see if SCSI Status is non zero. If so report SCSI
1726                  * Status.
1727                  */
1728                 if (lscsi_status != 0) {
1729                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1730                                 DEBUG2(qla_printk(KERN_INFO, ha,
1731                                     "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1732                                     vha->host_no, cp->device->id,
1733                                     cp->device->lun));
1734                                 logit = 1;
1735                                 break;
1736                         }
1737                         if (lscsi_status != SS_CHECK_CONDITION)
1738                                 break;
1739
1740                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1741                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1742                                 break;
1743
1744                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
1745                             sense_len, rsp);
1746                 }
1747                 break;
1748
1749         case CS_PORT_LOGGED_OUT:
1750         case CS_PORT_CONFIG_CHG:
1751         case CS_PORT_BUSY:
1752         case CS_INCOMPLETE:
1753         case CS_PORT_UNAVAILABLE:
1754         case CS_TIMEOUT:
1755         case CS_RESET:
1756
1757                 /*
1758                  * We are going to have the fc class block the rport
1759                  * while we try to recover so instruct the mid layer
1760                  * to requeue until the class decides how to handle this.
1761                  */
1762                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1763
1764                 if (comp_status == CS_TIMEOUT) {
1765                         if (IS_FWI2_CAPABLE(ha))
1766                                 break;
1767                         else if ((le16_to_cpu(sts->status_flags) &
1768                             SF_LOGOUT_SENT) == 0)
1769                                 break;
1770                 }
1771
1772                 DEBUG2(qla_printk(KERN_INFO, ha,
1773                         "scsi(%ld:%d:%d) Port down status: port-state=0x%x\n",
1774                         vha->host_no, cp->device->id, cp->device->lun,
1775                         atomic_read(&fcport->state)));
1776
1777                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1778                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1779                 break;
1780
1781         case CS_ABORTED:
1782                 cp->result = DID_RESET << 16;
1783                 break;
1784
1785         case CS_DIF_ERROR:
1786                 qla2x00_handle_dif_error(sp, sts24);
1787                 break;
1788         default:
1789                 cp->result = DID_ERROR << 16;
1790                 break;
1791         }
1792
1793 out:
1794         if (logit)
1795                 DEBUG2(qla_printk(KERN_INFO, ha,
1796                     "scsi(%ld:%d:%d) FCP command status: 0x%x-0x%x (0x%x) "
1797                     "oxid=0x%x cdb=%02x%02x%02x len=0x%x "
1798                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x\n", vha->host_no,
1799                     cp->device->id, cp->device->lun, comp_status, scsi_status,
1800                     cp->result, ox_id, cp->cmnd[0],
1801                     cp->cmnd[1], cp->cmnd[2], scsi_bufflen(cp), rsp_info_len,
1802                     resid_len, fw_resid_len));
1803
1804         if (rsp->status_srb == NULL)
1805                 qla2x00_sp_compl(ha, sp);
1806 }
1807
1808 /**
1809  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1810  * @ha: SCSI driver HA context
1811  * @pkt: Entry pointer
1812  *
1813  * Extended sense data.
1814  */
1815 static void
1816 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1817 {
1818         uint8_t         sense_sz = 0;
1819         struct qla_hw_data *ha = rsp->hw;
1820         srb_t           *sp = rsp->status_srb;
1821         struct scsi_cmnd *cp;
1822
1823         if (sp != NULL && sp->request_sense_length != 0) {
1824                 cp = sp->cmd;
1825                 if (cp == NULL) {
1826                         DEBUG2(printk("%s(): Cmd already returned back to OS "
1827                             "sp=%p.\n", __func__, sp));
1828                         qla_printk(KERN_INFO, ha,
1829                             "cmd is NULL: already returned to OS (sp=%p)\n",
1830                             sp);
1831
1832                         rsp->status_srb = NULL;
1833                         return;
1834                 }
1835
1836                 if (sp->request_sense_length > sizeof(pkt->data)) {
1837                         sense_sz = sizeof(pkt->data);
1838                 } else {
1839                         sense_sz = sp->request_sense_length;
1840                 }
1841
1842                 /* Move sense data. */
1843                 if (IS_FWI2_CAPABLE(ha))
1844                         host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1845                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1846                 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1847
1848                 sp->request_sense_ptr += sense_sz;
1849                 sp->request_sense_length -= sense_sz;
1850
1851                 /* Place command on done queue. */
1852                 if (sp->request_sense_length == 0) {
1853                         rsp->status_srb = NULL;
1854                         qla2x00_sp_compl(ha, sp);
1855                 }
1856         }
1857 }
1858
1859 /**
1860  * qla2x00_error_entry() - Process an error entry.
1861  * @ha: SCSI driver HA context
1862  * @pkt: Entry pointer
1863  */
1864 static void
1865 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1866 {
1867         srb_t *sp;
1868         struct qla_hw_data *ha = vha->hw;
1869         uint32_t handle = LSW(pkt->handle);
1870         uint16_t que = MSW(pkt->handle);
1871         struct req_que *req = ha->req_q_map[que];
1872 #if defined(QL_DEBUG_LEVEL_2)
1873         if (pkt->entry_status & RF_INV_E_ORDER)
1874                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1875         else if (pkt->entry_status & RF_INV_E_COUNT)
1876                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1877         else if (pkt->entry_status & RF_INV_E_PARAM)
1878                 qla_printk(KERN_ERR, ha,
1879                     "%s: Invalid Entry Parameter\n", __func__);
1880         else if (pkt->entry_status & RF_INV_E_TYPE)
1881                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1882         else if (pkt->entry_status & RF_BUSY)
1883                 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1884         else
1885                 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1886 #endif
1887
1888         /* Validate handle. */
1889         if (handle < MAX_OUTSTANDING_COMMANDS)
1890                 sp = req->outstanding_cmds[handle];
1891         else
1892                 sp = NULL;
1893
1894         if (sp) {
1895                 /* Free outstanding command slot. */
1896                 req->outstanding_cmds[handle] = NULL;
1897
1898                 /* Bad payload or header */
1899                 if (pkt->entry_status &
1900                     (RF_INV_E_ORDER | RF_INV_E_COUNT |
1901                      RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1902                         sp->cmd->result = DID_ERROR << 16;
1903                 } else if (pkt->entry_status & RF_BUSY) {
1904                         sp->cmd->result = DID_BUS_BUSY << 16;
1905                 } else {
1906                         sp->cmd->result = DID_ERROR << 16;
1907                 }
1908                 qla2x00_sp_compl(ha, sp);
1909
1910         } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1911             COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1912                 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1913                     vha->host_no));
1914                 qla_printk(KERN_WARNING, ha,
1915                     "Error entry - invalid handle\n");
1916
1917                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1918                 qla2xxx_wake_dpc(vha);
1919         }
1920 }
1921
1922 /**
1923  * qla24xx_mbx_completion() - Process mailbox command completions.
1924  * @ha: SCSI driver HA context
1925  * @mb0: Mailbox0 register
1926  */
1927 static void
1928 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1929 {
1930         uint16_t        cnt;
1931         uint16_t __iomem *wptr;
1932         struct qla_hw_data *ha = vha->hw;
1933         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1934
1935         /* Load return mailbox registers. */
1936         ha->flags.mbox_int = 1;
1937         ha->mailbox_out[0] = mb0;
1938         wptr = (uint16_t __iomem *)&reg->mailbox1;
1939
1940         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1941                 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1942                 wptr++;
1943         }
1944
1945         if (ha->mcp) {
1946                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1947                     __func__, vha->host_no, ha->mcp->mb[0]));
1948         } else {
1949                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1950                     __func__, vha->host_no));
1951         }
1952 }
1953
1954 /**
1955  * qla24xx_process_response_queue() - Process response queue entries.
1956  * @ha: SCSI driver HA context
1957  */
1958 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1959         struct rsp_que *rsp)
1960 {
1961         struct sts_entry_24xx *pkt;
1962         struct qla_hw_data *ha = vha->hw;
1963
1964         if (!vha->flags.online)
1965                 return;
1966
1967         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1968                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1969
1970                 rsp->ring_index++;
1971                 if (rsp->ring_index == rsp->length) {
1972                         rsp->ring_index = 0;
1973                         rsp->ring_ptr = rsp->ring;
1974                 } else {
1975                         rsp->ring_ptr++;
1976                 }
1977
1978                 if (pkt->entry_status != 0) {
1979                         DEBUG3(printk(KERN_INFO
1980                             "scsi(%ld): Process error entry.\n", vha->host_no));
1981
1982                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1983                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1984                         wmb();
1985                         continue;
1986                 }
1987
1988                 switch (pkt->entry_type) {
1989                 case STATUS_TYPE:
1990                         qla2x00_status_entry(vha, rsp, pkt);
1991                         break;
1992                 case STATUS_CONT_TYPE:
1993                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1994                         break;
1995                 case VP_RPT_ID_IOCB_TYPE:
1996                         qla24xx_report_id_acquisition(vha,
1997                             (struct vp_rpt_id_entry_24xx *)pkt);
1998                         break;
1999                 case LOGINOUT_PORT_IOCB_TYPE:
2000                         qla24xx_logio_entry(vha, rsp->req,
2001                             (struct logio_entry_24xx *)pkt);
2002                         break;
2003                 case TSK_MGMT_IOCB_TYPE:
2004                         qla24xx_tm_iocb_entry(vha, rsp->req,
2005                             (struct tsk_mgmt_entry *)pkt);
2006                         break;
2007                 case CT_IOCB_TYPE:
2008                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2009                         clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
2010                         break;
2011                 case ELS_IOCB_TYPE:
2012                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2013                         break;
2014                 default:
2015                         /* Type Not Supported. */
2016                         DEBUG4(printk(KERN_WARNING
2017                             "scsi(%ld): Received unknown response pkt type %x "
2018                             "entry status=%x.\n",
2019                             vha->host_no, pkt->entry_type, pkt->entry_status));
2020                         break;
2021                 }
2022                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2023                 wmb();
2024         }
2025
2026         /* Adjust ring index */
2027         if (IS_QLA82XX(ha)) {
2028                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2029                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2030         } else
2031                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2032 }
2033
2034 static void
2035 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2036 {
2037         int rval;
2038         uint32_t cnt;
2039         struct qla_hw_data *ha = vha->hw;
2040         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2041
2042         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
2043                 return;
2044
2045         rval = QLA_SUCCESS;
2046         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2047         RD_REG_DWORD(&reg->iobase_addr);
2048         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2049         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2050             rval == QLA_SUCCESS; cnt--) {
2051                 if (cnt) {
2052                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2053                         udelay(10);
2054                 } else
2055                         rval = QLA_FUNCTION_TIMEOUT;
2056         }
2057         if (rval == QLA_SUCCESS)
2058                 goto next_test;
2059
2060         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2061         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2062             rval == QLA_SUCCESS; cnt--) {
2063                 if (cnt) {
2064                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2065                         udelay(10);
2066                 } else
2067                         rval = QLA_FUNCTION_TIMEOUT;
2068         }
2069         if (rval != QLA_SUCCESS)
2070                 goto done;
2071
2072 next_test:
2073         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2074                 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
2075
2076 done:
2077         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2078         RD_REG_DWORD(&reg->iobase_window);
2079 }
2080
2081 /**
2082  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
2083  * @irq:
2084  * @dev_id: SCSI driver HA context
2085  *
2086  * Called by system whenever the host adapter generates an interrupt.
2087  *
2088  * Returns handled flag.
2089  */
2090 irqreturn_t
2091 qla24xx_intr_handler(int irq, void *dev_id)
2092 {
2093         scsi_qla_host_t *vha;
2094         struct qla_hw_data *ha;
2095         struct device_reg_24xx __iomem *reg;
2096         int             status;
2097         unsigned long   iter;
2098         uint32_t        stat;
2099         uint32_t        hccr;
2100         uint16_t        mb[4];
2101         struct rsp_que *rsp;
2102         unsigned long   flags;
2103
2104         rsp = (struct rsp_que *) dev_id;
2105         if (!rsp) {
2106                 printk(KERN_INFO
2107                     "%s(): NULL response queue pointer\n", __func__);
2108                 return IRQ_NONE;
2109         }
2110
2111         ha = rsp->hw;
2112         reg = &ha->iobase->isp24;
2113         status = 0;
2114
2115         if (unlikely(pci_channel_offline(ha->pdev)))
2116                 return IRQ_HANDLED;
2117
2118         spin_lock_irqsave(&ha->hardware_lock, flags);
2119         vha = pci_get_drvdata(ha->pdev);
2120         for (iter = 50; iter--; ) {
2121                 stat = RD_REG_DWORD(&reg->host_status);
2122                 if (stat & HSRX_RISC_PAUSED) {
2123                         if (unlikely(pci_channel_offline(ha->pdev)))
2124                                 break;
2125
2126                         hccr = RD_REG_DWORD(&reg->hccr);
2127
2128                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2129                             "Dumping firmware!\n", hccr);
2130
2131                         qla2xxx_check_risc_status(vha);
2132
2133                         ha->isp_ops->fw_dump(vha, 1);
2134                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2135                         break;
2136                 } else if ((stat & HSRX_RISC_INT) == 0)
2137                         break;
2138
2139                 switch (stat & 0xff) {
2140                 case 0x1:
2141                 case 0x2:
2142                 case 0x10:
2143                 case 0x11:
2144                         qla24xx_mbx_completion(vha, MSW(stat));
2145                         status |= MBX_INTERRUPT;
2146
2147                         break;
2148                 case 0x12:
2149                         mb[0] = MSW(stat);
2150                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2151                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2152                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2153                         qla2x00_async_event(vha, rsp, mb);
2154                         break;
2155                 case 0x13:
2156                 case 0x14:
2157                         qla24xx_process_response_queue(vha, rsp);
2158                         break;
2159                 default:
2160                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2161                             "(%d).\n",
2162                             vha->host_no, stat & 0xff));
2163                         break;
2164                 }
2165                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2166                 RD_REG_DWORD_RELAXED(&reg->hccr);
2167         }
2168         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2169
2170         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2171             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2172                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2173                 complete(&ha->mbx_intr_comp);
2174         }
2175
2176         return IRQ_HANDLED;
2177 }
2178
2179 static irqreturn_t
2180 qla24xx_msix_rsp_q(int irq, void *dev_id)
2181 {
2182         struct qla_hw_data *ha;
2183         struct rsp_que *rsp;
2184         struct device_reg_24xx __iomem *reg;
2185         struct scsi_qla_host *vha;
2186         unsigned long flags;
2187
2188         rsp = (struct rsp_que *) dev_id;
2189         if (!rsp) {
2190                 printk(KERN_INFO
2191                 "%s(): NULL response queue pointer\n", __func__);
2192                 return IRQ_NONE;
2193         }
2194         ha = rsp->hw;
2195         reg = &ha->iobase->isp24;
2196
2197         spin_lock_irqsave(&ha->hardware_lock, flags);
2198
2199         vha = pci_get_drvdata(ha->pdev);
2200         qla24xx_process_response_queue(vha, rsp);
2201         if (!ha->flags.disable_msix_handshake) {
2202                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2203                 RD_REG_DWORD_RELAXED(&reg->hccr);
2204         }
2205         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2206
2207         return IRQ_HANDLED;
2208 }
2209
2210 static irqreturn_t
2211 qla25xx_msix_rsp_q(int irq, void *dev_id)
2212 {
2213         struct qla_hw_data *ha;
2214         struct rsp_que *rsp;
2215         struct device_reg_24xx __iomem *reg;
2216         unsigned long flags;
2217
2218         rsp = (struct rsp_que *) dev_id;
2219         if (!rsp) {
2220                 printk(KERN_INFO
2221                         "%s(): NULL response queue pointer\n", __func__);
2222                 return IRQ_NONE;
2223         }
2224         ha = rsp->hw;
2225
2226         /* Clear the interrupt, if enabled, for this response queue */
2227         if (rsp->options & ~BIT_6) {
2228                 reg = &ha->iobase->isp24;
2229                 spin_lock_irqsave(&ha->hardware_lock, flags);
2230                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2231                 RD_REG_DWORD_RELAXED(&reg->hccr);
2232                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2233         }
2234         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2235
2236         return IRQ_HANDLED;
2237 }
2238
2239 static irqreturn_t
2240 qla24xx_msix_default(int irq, void *dev_id)
2241 {
2242         scsi_qla_host_t *vha;
2243         struct qla_hw_data *ha;
2244         struct rsp_que *rsp;
2245         struct device_reg_24xx __iomem *reg;
2246         int             status;
2247         uint32_t        stat;
2248         uint32_t        hccr;
2249         uint16_t        mb[4];
2250         unsigned long flags;
2251
2252         rsp = (struct rsp_que *) dev_id;
2253         if (!rsp) {
2254                 DEBUG(printk(
2255                 "%s(): NULL response queue pointer\n", __func__));
2256                 return IRQ_NONE;
2257         }
2258         ha = rsp->hw;
2259         reg = &ha->iobase->isp24;
2260         status = 0;
2261
2262         spin_lock_irqsave(&ha->hardware_lock, flags);
2263         vha = pci_get_drvdata(ha->pdev);
2264         do {
2265                 stat = RD_REG_DWORD(&reg->host_status);
2266                 if (stat & HSRX_RISC_PAUSED) {
2267                         if (unlikely(pci_channel_offline(ha->pdev)))
2268                                 break;
2269
2270                         hccr = RD_REG_DWORD(&reg->hccr);
2271
2272                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2273                             "Dumping firmware!\n", hccr);
2274
2275                         qla2xxx_check_risc_status(vha);
2276
2277                         ha->isp_ops->fw_dump(vha, 1);
2278                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2279                         break;
2280                 } else if ((stat & HSRX_RISC_INT) == 0)
2281                         break;
2282
2283                 switch (stat & 0xff) {
2284                 case 0x1:
2285                 case 0x2:
2286                 case 0x10:
2287                 case 0x11:
2288                         qla24xx_mbx_completion(vha, MSW(stat));
2289                         status |= MBX_INTERRUPT;
2290
2291                         break;
2292                 case 0x12:
2293                         mb[0] = MSW(stat);
2294                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2295                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2296                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2297                         qla2x00_async_event(vha, rsp, mb);
2298                         break;
2299                 case 0x13:
2300                 case 0x14:
2301                         qla24xx_process_response_queue(vha, rsp);
2302                         break;
2303                 default:
2304                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2305                             "(%d).\n",
2306                             vha->host_no, stat & 0xff));
2307                         break;
2308                 }
2309                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2310         } while (0);
2311         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2312
2313         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2314             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2315                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2316                 complete(&ha->mbx_intr_comp);
2317         }
2318         return IRQ_HANDLED;
2319 }
2320
2321 /* Interrupt handling helpers. */
2322
2323 struct qla_init_msix_entry {
2324         const char *name;
2325         irq_handler_t handler;
2326 };
2327
2328 static struct qla_init_msix_entry msix_entries[3] = {
2329         { "qla2xxx (default)", qla24xx_msix_default },
2330         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2331         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2332 };
2333
2334 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2335         { "qla2xxx (default)", qla82xx_msix_default },
2336         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2337 };
2338
2339 static void
2340 qla24xx_disable_msix(struct qla_hw_data *ha)
2341 {
2342         int i;
2343         struct qla_msix_entry *qentry;
2344
2345         for (i = 0; i < ha->msix_count; i++) {
2346                 qentry = &ha->msix_entries[i];
2347                 if (qentry->have_irq)
2348                         free_irq(qentry->vector, qentry->rsp);
2349         }
2350         pci_disable_msix(ha->pdev);
2351         kfree(ha->msix_entries);
2352         ha->msix_entries = NULL;
2353         ha->flags.msix_enabled = 0;
2354 }
2355
2356 static int
2357 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2358 {
2359 #define MIN_MSIX_COUNT  2
2360         int i, ret;
2361         struct msix_entry *entries;
2362         struct qla_msix_entry *qentry;
2363
2364         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2365                         GFP_KERNEL);
2366         if (!entries)
2367                 return -ENOMEM;
2368
2369         for (i = 0; i < ha->msix_count; i++)
2370                 entries[i].entry = i;
2371
2372         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2373         if (ret) {
2374                 if (ret < MIN_MSIX_COUNT)
2375                         goto msix_failed;
2376
2377                 qla_printk(KERN_WARNING, ha,
2378                         "MSI-X: Failed to enable support -- %d/%d\n"
2379                         " Retry with %d vectors\n", ha->msix_count, ret, ret);
2380                 ha->msix_count = ret;
2381                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2382                 if (ret) {
2383 msix_failed:
2384                         qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2385                                 " support, giving up -- %d/%d\n",
2386                                 ha->msix_count, ret);
2387                         goto msix_out;
2388                 }
2389                 ha->max_rsp_queues = ha->msix_count - 1;
2390         }
2391         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2392                                 ha->msix_count, GFP_KERNEL);
2393         if (!ha->msix_entries) {
2394                 ret = -ENOMEM;
2395                 goto msix_out;
2396         }
2397         ha->flags.msix_enabled = 1;
2398
2399         for (i = 0; i < ha->msix_count; i++) {
2400                 qentry = &ha->msix_entries[i];
2401                 qentry->vector = entries[i].vector;
2402                 qentry->entry = entries[i].entry;
2403                 qentry->have_irq = 0;
2404                 qentry->rsp = NULL;
2405         }
2406
2407         /* Enable MSI-X vectors for the base queue */
2408         for (i = 0; i < 2; i++) {
2409                 qentry = &ha->msix_entries[i];
2410                 if (IS_QLA82XX(ha)) {
2411                         ret = request_irq(qentry->vector,
2412                                 qla82xx_msix_entries[i].handler,
2413                                 0, qla82xx_msix_entries[i].name, rsp);
2414                 } else {
2415                         ret = request_irq(qentry->vector,
2416                                 msix_entries[i].handler,
2417                                 0, msix_entries[i].name, rsp);
2418                 }
2419                 if (ret) {
2420                         qla_printk(KERN_WARNING, ha,
2421                         "MSI-X: Unable to register handler -- %x/%d.\n",
2422                         qentry->vector, ret);
2423                         qla24xx_disable_msix(ha);
2424                         ha->mqenable = 0;
2425                         goto msix_out;
2426                 }
2427                 qentry->have_irq = 1;
2428                 qentry->rsp = rsp;
2429                 rsp->msix = qentry;
2430         }
2431
2432         /* Enable MSI-X vector for response queue update for queue 0 */
2433         if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2434                 ha->mqenable = 1;
2435
2436 msix_out:
2437         kfree(entries);
2438         return ret;
2439 }
2440
2441 int
2442 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2443 {
2444         int ret;
2445         device_reg_t __iomem *reg = ha->iobase;
2446
2447         /* If possible, enable MSI-X. */
2448         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2449                 !IS_QLA8432(ha) && !IS_QLA8XXX_TYPE(ha))
2450                 goto skip_msi;
2451
2452         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2453                 (ha->pdev->subsystem_device == 0x7040 ||
2454                 ha->pdev->subsystem_device == 0x7041 ||
2455                 ha->pdev->subsystem_device == 0x1705)) {
2456                 DEBUG2(qla_printk(KERN_WARNING, ha,
2457                         "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X,0x%X).\n",
2458                         ha->pdev->subsystem_vendor,
2459                         ha->pdev->subsystem_device));
2460                 goto skip_msi;
2461         }
2462
2463         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2464                 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2465                 DEBUG2(qla_printk(KERN_WARNING, ha,
2466                 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2467                         ha->pdev->revision, ha->fw_attributes));
2468                 goto skip_msix;
2469         }
2470
2471         ret = qla24xx_enable_msix(ha, rsp);
2472         if (!ret) {
2473                 DEBUG2(qla_printk(KERN_INFO, ha,
2474                     "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2475                     ha->fw_attributes));
2476                 goto clear_risc_ints;
2477         }
2478         qla_printk(KERN_WARNING, ha,
2479             "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
2480 skip_msix:
2481
2482         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2483             !IS_QLA8001(ha))
2484                 goto skip_msi;
2485
2486         ret = pci_enable_msi(ha->pdev);
2487         if (!ret) {
2488                 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2489                 ha->flags.msi_enabled = 1;
2490         } else
2491                 qla_printk(KERN_WARNING, ha,
2492                     "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2493 skip_msi:
2494
2495         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2496             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2497             QLA2XXX_DRIVER_NAME, rsp);
2498         if (ret) {
2499                 qla_printk(KERN_WARNING, ha,
2500                     "Failed to reserve interrupt %d already in use.\n",
2501                     ha->pdev->irq);
2502                 goto fail;
2503         }
2504
2505 clear_risc_ints:
2506
2507         /*
2508          * FIXME: Noted that 8014s were being dropped during NK testing.
2509          * Timing deltas during MSI-X/INTa transitions?
2510          */
2511         if (IS_QLA81XX(ha) || IS_QLA82XX(ha))
2512                 goto fail;
2513         spin_lock_irq(&ha->hardware_lock);
2514         if (IS_FWI2_CAPABLE(ha)) {
2515                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2516                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2517         } else {
2518                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2519                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2520                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2521         }
2522         spin_unlock_irq(&ha->hardware_lock);
2523
2524 fail:
2525         return ret;
2526 }
2527
2528 void
2529 qla2x00_free_irqs(scsi_qla_host_t *vha)
2530 {
2531         struct qla_hw_data *ha = vha->hw;
2532         struct rsp_que *rsp = ha->rsp_q_map[0];
2533
2534         if (ha->flags.msix_enabled)
2535                 qla24xx_disable_msix(ha);
2536         else if (ha->flags.msi_enabled) {
2537                 free_irq(ha->pdev->irq, rsp);
2538                 pci_disable_msi(ha->pdev);
2539         } else
2540                 free_irq(ha->pdev->irq, rsp);
2541 }
2542
2543
2544 int qla25xx_request_irq(struct rsp_que *rsp)
2545 {
2546         struct qla_hw_data *ha = rsp->hw;
2547         struct qla_init_msix_entry *intr = &msix_entries[2];
2548         struct qla_msix_entry *msix = rsp->msix;
2549         int ret;
2550
2551         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2552         if (ret) {
2553                 qla_printk(KERN_WARNING, ha,
2554                         "MSI-X: Unable to register handler -- %x/%d.\n",
2555                         msix->vector, ret);
2556                 return ret;
2557         }
2558         msix->have_irq = 1;
2559         msix->rsp = rsp;
2560         return ret;
2561 }