drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  *                  QLOGIC LINUX SOFTWARE
   3  *
   4  * QLogic ISP2x00 device driver for Linux 2.6.x
   5  * Copyright (C) 2003-2004 QLogic Corporation
   6  * (www.qlogic.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  */
  19 #include "qla_def.h"
  20
  21 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  22 static void qla2x00_async_event(scsi_qla_host_t *, uint32_t);
  23 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
  24 void qla2x00_process_response_queue(struct scsi_qla_host *);
  25 static void qla2x00_status_entry(scsi_qla_host_t *, sts_entry_t *);
  26 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
  27 static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
  28 static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
  29
  30 /**
  31  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  32  * @irq:
  33  * @dev_id: SCSI driver HA context
  34  * @regs:
  35  *
  36  * Called by system whenever the host adapter generates an interrupt.
  37  *
  38  * Returns handled flag.
  39  */
  40 irqreturn_t
  41 qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
  42 {
  43         scsi_qla_host_t *ha;
  44         device_reg_t __iomem *reg;
  45         int             status;
  46         unsigned long   flags;
  47         unsigned long   iter;
  48         uint32_t        mbx;
  49
  50         ha = (scsi_qla_host_t *) dev_id;
  51         if (!ha) {
  52                 printk(KERN_INFO
  53                     "%s(): NULL host pointer\n", __func__);
  54                 return (IRQ_NONE);
  55         }
  56
  57         reg = ha->iobase;
  58         status = 0;
  59
  60         spin_lock_irqsave(&ha->hardware_lock, flags);
  61         for (iter = 50; iter--; ) {
  62                 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  63                         break;
  64
  65                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  66                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  67                         RD_REG_WORD(&reg->hccr);
  68
  69                         /* Get mailbox data. */
  70                         mbx = RD_MAILBOX_REG(ha, reg, 0);
  71                         if (mbx > 0x3fff && mbx < 0x8000) {
  72                                 qla2x00_mbx_completion(ha, (uint16_t)mbx);
  73                                 status |= MBX_INTERRUPT;
  74                         } else if (mbx > 0x7fff && mbx < 0xc000) {
  75                                 qla2x00_async_event(ha, mbx);
  76                         } else {
  77                                 /*EMPTY*/
  78                                 DEBUG2(printk("scsi(%ld): Unrecognized "
  79                                     "interrupt type (%d)\n",
  80                                     ha->host_no, mbx));
  81                         }
  82                         /* Release mailbox registers. */
  83                         WRT_REG_WORD(&reg->semaphore, 0);
  84                         RD_REG_WORD(&reg->semaphore);
  85                 } else {
  86                         qla2x00_process_response_queue(ha);
  87
  88                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  89                         RD_REG_WORD(&reg->hccr);
  90                 }
  91         }
  92         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  93
  94         ha->last_irq_cpu = _smp_processor_id();
  95         ha->total_isr_cnt++;
  96
  97         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
  98             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
  99                 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
 100
 101                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 102                 up(&ha->mbx_intr_sem);
 103
 104                 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
 105         }
 106
 107         return (IRQ_HANDLED);
 108 }
 109
 110 /**
 111  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 112  * @irq:
 113  * @dev_id: SCSI driver HA context
 114  * @regs:
 115  *
 116  * Called by system whenever the host adapter generates an interrupt.
 117  *
 118  * Returns handled flag.
 119  */
 120 irqreturn_t
 121 qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
 122 {
 123         scsi_qla_host_t *ha;
 124         device_reg_t __iomem *reg;
 125         int             status;
 126         unsigned long   flags;
 127         unsigned long   iter;
 128         uint32_t        stat;
 129         uint32_t        mbx;
 130         uint16_t        hccr;
 131
 132         ha = (scsi_qla_host_t *) dev_id;
 133         if (!ha) {
 134                 printk(KERN_INFO
 135                     "%s(): NULL host pointer\n", __func__);
 136                 return (IRQ_NONE);
 137         }
 138
 139         reg = ha->iobase;
 140         status = 0;
 141
 142         spin_lock_irqsave(&ha->hardware_lock, flags);
 143         for (iter = 50; iter--; ) {
 144                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 145                 if (stat & HSR_RISC_PAUSED) {
 146                         hccr = RD_REG_WORD(&reg->hccr);
 147                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 148                                 qla_printk(KERN_INFO, ha,
 149                                     "Parity error -- HCCR=%x.\n", hccr);
 150                         else
 151                                 qla_printk(KERN_INFO, ha,
 152                                     "RISC paused -- HCCR=%x\n", hccr);
 153
 154                         /*
 155                          * Issue a "HARD" reset in order for the RISC
 156                          * interrupt bit to be cleared.  Schedule a big
 157                          * hammmer to get out of the RISC PAUSED state.
 158                          */
 159                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 160                         RD_REG_WORD(&reg->hccr);
 161                         set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 162                         break;
 163                 } else if ((stat & HSR_RISC_INT) == 0)
 164                         break;
 165
 166                 mbx = MSW(stat);
 167                 switch (stat & 0xff) {
 168                 case 0x13:
 169                         qla2x00_process_response_queue(ha);
 170                         break;
 171                 case 0x1:
 172                 case 0x2:
 173                 case 0x10:
 174                 case 0x11:
 175                         qla2x00_mbx_completion(ha, (uint16_t)mbx);
 176                         status |= MBX_INTERRUPT;
 177
 178                         /* Release mailbox registers. */
 179                         WRT_REG_WORD(&reg->semaphore, 0);
 180                         break;
 181                 case 0x12:
 182                         qla2x00_async_event(ha, mbx);
 183                         break;
 184                 case 0x15:
 185                         mbx = mbx << 16 | MBA_CMPLT_1_16BIT;
 186                         qla2x00_async_event(ha, mbx);
 187                         break;
 188                 case 0x16:
 189                         mbx = mbx << 16 | MBA_SCSI_COMPLETION;
 190                         qla2x00_async_event(ha, mbx);
 191                         break;
 192                 default:
 193                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
 194                             "(%d)\n",
 195                             ha->host_no, stat & 0xff));
 196                         break;
 197                 }
 198                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 199                 RD_REG_WORD_RELAXED(&reg->hccr);
 200         }
 201         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 202
 203         ha->last_irq_cpu = _smp_processor_id();
 204         ha->total_isr_cnt++;
 205
 206         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 207             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 208                 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
 209
 210                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 211                 up(&ha->mbx_intr_sem);
 212
 213                 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
 214         }
 215
 216         return (IRQ_HANDLED);
 217 }
 218
 219 /**
 220  * qla2x00_mbx_completion() - Process mailbox command completions.
 221  * @ha: SCSI driver HA context
 222  * @mb0: Mailbox0 register
 223  */
 224 static void
 225 qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
 226 {
 227         uint16_t        cnt;
 228         uint16_t __iomem *wptr;
 229         device_reg_t __iomem *reg = ha->iobase;
 230
 231         /* Load return mailbox registers. */
 232         ha->flags.mbox_int = 1;
 233         ha->mailbox_out[0] = mb0;
 234         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 235
 236         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 237                 if (IS_QLA2200(ha) && cnt == 8)
 238                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 239                 if (cnt == 4 || cnt == 5)
 240                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 241                 else
 242                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 243
 244                 wptr++;
 245         }
 246
 247         if (ha->mcp) {
 248                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
 249                     __func__, ha->host_no, ha->mcp->mb[0]));
 250         } else {
 251                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
 252                     __func__, ha->host_no));
 253         }
 254 }
 255
 256 /**
 257  * qla2x00_async_event() - Process aynchronous events.
 258  * @ha: SCSI driver HA context
 259  * @mb0: Mailbox0 register
 260  */
 261 static void
 262 qla2x00_async_event(scsi_qla_host_t *ha, uint32_t mbx)
 263 {
 264         static char     *link_speeds[5] = { "1", "2", "4", "?", "10" };
 265         char            *link_speed;
 266         uint16_t        mb[4];
 267         uint16_t        handle_cnt;
 268         uint16_t        cnt;
 269         uint32_t        handles[5];
 270         device_reg_t __iomem *reg = ha->iobase;
 271         uint32_t        rscn_entry, host_pid;
 272         uint8_t         rscn_queue_index;
 273
 274         /* Setup to process RIO completion. */
 275         handle_cnt = 0;
 276         mb[0] = LSW(mbx);
 277         switch (mb[0]) {
 278         case MBA_SCSI_COMPLETION:
 279                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 280                         handles[0] = le32_to_cpu(
 281                             ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
 282                             RD_MAILBOX_REG(ha, reg, 1));
 283                 else
 284                         handles[0] = le32_to_cpu(
 285                             ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
 286                             MSW(mbx));
 287                 handle_cnt = 1;
 288                 break;
 289         case MBA_CMPLT_1_16BIT:
 290                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 291                         handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 292                 else
 293                         handles[0] = MSW(mbx);
 294                 handle_cnt = 1;
 295                 mb[0] = MBA_SCSI_COMPLETION;
 296                 break;
 297         case MBA_CMPLT_2_16BIT:
 298                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 299                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 300                 handle_cnt = 2;
 301                 mb[0] = MBA_SCSI_COMPLETION;
 302                 break;
 303         case MBA_CMPLT_3_16BIT:
 304                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 305                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 306                 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
 307                 handle_cnt = 3;
 308                 mb[0] = MBA_SCSI_COMPLETION;
 309                 break;
 310         case MBA_CMPLT_4_16BIT:
 311                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 312                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 313                 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
 314                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 315                 handle_cnt = 4;
 316                 mb[0] = MBA_SCSI_COMPLETION;
 317                 break;
 318         case MBA_CMPLT_5_16BIT:
 319                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 320                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 321                 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
 322                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 323                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 324                 handle_cnt = 5;
 325                 mb[0] = MBA_SCSI_COMPLETION;
 326                 break;
 327         case MBA_CMPLT_2_32BIT:
 328                 handles[0] = le32_to_cpu(
 329                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
 330                     RD_MAILBOX_REG(ha, reg, 1));
 331                 handles[1] = le32_to_cpu(
 332                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 333                     RD_MAILBOX_REG(ha, reg, 6));
 334                 handle_cnt = 2;
 335                 mb[0] = MBA_SCSI_COMPLETION;
 336                 break;
 337         default:
 338                 break;
 339         }
 340
 341         switch (mb[0]) {
 342         case MBA_SCSI_COMPLETION:       /* Fast Post */
 343                 if (!ha->flags.online)
 344                         break;
 345
 346                 for (cnt = 0; cnt < handle_cnt; cnt++)
 347                         qla2x00_process_completed_request(ha, handles[cnt]);
 348                 break;
 349
 350         case MBA_RESET:                 /* Reset */
 351                 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
 352
 353                 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 354                 break;
 355
 356         case MBA_SYSTEM_ERR:            /* System Error */
 357                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 358                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 359                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 360
 361                 qla_printk(KERN_INFO, ha,
 362                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
 363                     mb[1], mb[2], mb[3]);
 364
 365                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 366                         qla2100_fw_dump(ha, 1);
 367                 else
 368                         qla2300_fw_dump(ha, 1);
 369
 370                 if (mb[1] == 0) {
 371                         qla_printk(KERN_INFO, ha,
 372                             "Unrecoverable Hardware Error: adapter marked "
 373                             "OFFLINE!\n");
 374                         ha->flags.online = 0;
 375                 } else
 376                         set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 377                 break;
 378
 379         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 380                 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
 381                     ha->host_no));
 382                 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
 383
 384                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 385                 break;
 386
 387         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 388                 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
 389                     ha->host_no));
 390                 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
 391
 392                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 393                 break;
 394
 395         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 396                 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
 397                     ha->host_no));
 398                 break;
 399
 400         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 401                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 402
 403                 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
 404                     mb[1]));
 405                 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
 406
 407                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 408                         atomic_set(&ha->loop_state, LOOP_DOWN);
 409                         atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
 410                         qla2x00_mark_all_devices_lost(ha);
 411                 }
 412
 413                 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
 414
 415                 ha->flags.management_server_logged_in = 0;
 416
 417                 /* Update AEN queue. */
 418                 qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
 419
 420                 ha->total_lip_cnt++;
 421                 break;
 422
 423         case MBA_LOOP_UP:               /* Loop Up Event */
 424                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 425
 426                 ha->link_data_rate = 0;
 427                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 428                         link_speed = link_speeds[0];
 429                 } else {
 430                         link_speed = link_speeds[3];
 431                         if (mb[1] < 5)
 432                                 link_speed = link_speeds[mb[1]];
 433                         ha->link_data_rate = mb[1];
 434                 }
 435
 436                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
 437                     ha->host_no, link_speed));
 438                 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
 439                     link_speed);
 440
 441                 ha->flags.management_server_logged_in = 0;
 442
 443                 /* Update AEN queue. */
 444                 qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
 445                 break;
 446
 447         case MBA_LOOP_DOWN:             /* Loop Down Event */
 448                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN.\n",
 449                     ha->host_no));
 450                 qla_printk(KERN_INFO, ha, "LOOP DOWN detected.\n");
 451
 452                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 453                         atomic_set(&ha->loop_state, LOOP_DOWN);
 454                         atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
 455                         ha->device_flags |= DFLG_NO_CABLE;
 456                         qla2x00_mark_all_devices_lost(ha);
 457                 }
 458
 459                 ha->flags.management_server_logged_in = 0;
 460                 ha->link_data_rate = 0;
 461
 462                 /* Update AEN queue. */
 463                 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
 464                 break;
 465
 466         case MBA_LIP_RESET:             /* LIP reset occurred */
 467                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 468
 469                 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
 470                     ha->host_no, mb[1]));
 471                 qla_printk(KERN_INFO, ha,
 472                     "LIP reset occured (%x).\n", mb[1]);
 473
 474                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 475                         atomic_set(&ha->loop_state, LOOP_DOWN);
 476                         atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
 477                         qla2x00_mark_all_devices_lost(ha);
 478                 }
 479
 480                 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 481
 482                 ha->operating_mode = LOOP;
 483                 ha->flags.management_server_logged_in = 0;
 484
 485                 /* Update AEN queue. */
 486                 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
 487
 488                 ha->total_lip_cnt++;
 489                 break;
 490
 491         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 492                 if (IS_QLA2100(ha))
 493                         break;
 494
 495                 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
 496                     ha->host_no));
 497
 498                 /*
 499                  * Until there's a transition from loop down to loop up, treat
 500                  * this as loop down only.
 501                  */
 502                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 503                         atomic_set(&ha->loop_state, LOOP_DOWN);
 504                         if (!atomic_read(&ha->loop_down_timer))
 505                                 atomic_set(&ha->loop_down_timer,
 506                                     LOOP_DOWN_TIME);
 507                         qla2x00_mark_all_devices_lost(ha);
 508                 }
 509
 510                 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
 511                         set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 512                 }
 513                 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
 514                 break;
 515
 516         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 517                 if (IS_QLA2100(ha))
 518                         break;
 519
 520                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 521
 522                 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
 523                     "received.\n",
 524                     ha->host_no));
 525                 qla_printk(KERN_INFO, ha,
 526                     "Configuration change detected: value=%x.\n", mb[1]);
 527
 528                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 529                         atomic_set(&ha->loop_state, LOOP_DOWN);
 530                         if (!atomic_read(&ha->loop_down_timer))
 531                                 atomic_set(&ha->loop_down_timer,
 532                                     LOOP_DOWN_TIME);
 533                         qla2x00_mark_all_devices_lost(ha);
 534                 }
 535
 536                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
 537                 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
 538                 break;
 539
 540         case MBA_PORT_UPDATE:           /* Port database update */
 541                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 542                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 543
 544                 /*
 545                  * If a single remote port just logged into (or logged out of)
 546                  * us, create a new entry in our rscn fcports list and handle
 547                  * the event like an RSCN.
 548                  */
 549                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
 550                     !IS_QLA6322(ha) && ha->flags.init_done && mb[1] != 0xffff &&
 551                     ((ha->operating_mode == P2P && mb[1] != 0) ||
 552                     (ha->operating_mode != P2P && mb[1] !=
 553                         SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
 554                         int rval;
 555                         fc_port_t *rscn_fcport;
 556
 557                         /* Create new fcport for login. */
 558                         rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
 559                         if (rscn_fcport) {
 560                                 DEBUG14(printk("scsi(%ld): Port Update -- "
 561                                     "creating RSCN fcport %p for %x/%x.\n",
 562                                     ha->host_no, rscn_fcport, mb[1], mb[2]));
 563
 564                                 rscn_fcport->loop_id = mb[1];
 565                                 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
 566                                 atomic_set(&rscn_fcport->state,
 567                                     FCS_DEVICE_LOST);
 568                                 list_add_tail(&rscn_fcport->list,
 569                                     &ha->rscn_fcports);
 570
 571                                 rval = qla2x00_handle_port_rscn(ha, 0,
 572                                     rscn_fcport, 1);
 573                                 if (rval == QLA_SUCCESS)
 574                                         break;
 575                         } else {
 576                                 DEBUG14(printk("scsi(%ld): Port Update -- "
 577                                     "-- unable to allocate RSCN fcport "
 578                                     "login.\n", ha->host_no));
 579                         }
 580                 }
 581
 582                 /*
 583                  * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
 584                  * event etc. earlier indicating loop is down) then process
 585                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 586                  */
 587                 atomic_set(&ha->loop_down_timer, 0);
 588                 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
 589                     atomic_read(&ha->loop_state) != LOOP_DEAD) {
 590                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
 591                             "ignored.\n", ha->host_no));
 592                         break;
 593                 }
 594
 595                 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 596                     ha->host_no));
 597                 DEBUG(printk(KERN_INFO
 598                     "scsi(%ld): Port database changed %04x %04x.\n",
 599                     ha->host_no, mb[1], mb[2]));
 600
 601                 /*
 602                  * Mark all devices as missing so we will login again.
 603                  */
 604                 atomic_set(&ha->loop_state, LOOP_UP);
 605
 606                 qla2x00_mark_all_devices_lost(ha);
 607
 608                 ha->flags.rscn_queue_overflow = 1;
 609
 610                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
 611                 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
 612
 613                 /* Update AEN queue. */
 614                 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
 615                 break;
 616
 617         case MBA_RSCN_UPDATE:           /* State Change Registration */
 618                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 619                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 620
 621                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
 622                     ha->host_no));
 623                 DEBUG(printk(KERN_INFO
 624                     "scsi(%ld): RSCN database changed -- %04x %04x.\n",
 625                     ha->host_no, mb[1], mb[2]));
 626
 627                 rscn_entry = (mb[1] << 16) | mb[2];
 628                 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
 629                     ha->d_id.b.al_pa;
 630                 if (rscn_entry == host_pid) {
 631                         DEBUG(printk(KERN_INFO
 632                             "scsi(%ld): Ignoring RSCN update to local host "
 633                             "port ID (%06x)\n",
 634                             ha->host_no, host_pid));
 635                         break;
 636                 }
 637
 638                 rscn_queue_index = ha->rscn_in_ptr + 1;
 639                 if (rscn_queue_index == MAX_RSCN_COUNT)
 640                         rscn_queue_index = 0;
 641                 if (rscn_queue_index != ha->rscn_out_ptr) {
 642                         ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
 643                         ha->rscn_in_ptr = rscn_queue_index;
 644                 } else {
 645                         ha->flags.rscn_queue_overflow = 1;
 646                 }
 647
 648                 atomic_set(&ha->loop_state, LOOP_UPDATE);
 649                 atomic_set(&ha->loop_down_timer, 0);
 650                 ha->flags.management_server_logged_in = 0;
 651
 652                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
 653                 set_bit(RSCN_UPDATE, &ha->dpc_flags);
 654
 655                 /* Update AEN queue. */
 656                 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
 657                 break;
 658
 659         /* case MBA_RIO_RESPONSE: */
 660         case MBA_ZIO_RESPONSE:
 661                 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
 662                     ha->host_no));
 663                 DEBUG(printk(KERN_INFO
 664                     "scsi(%ld): [R|Z]IO update completion.\n",
 665                     ha->host_no));
 666
 667                 qla2x00_process_response_queue(ha);
 668                 break;
 669         }
 670 }
 671
 672 /**
 673  * qla2x00_process_completed_request() - Process a Fast Post response.
 674  * @ha: SCSI driver HA context
 675  * @index: SRB index
 676  */
 677 static void
 678 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
 679 {
 680         srb_t *sp;
 681
 682         /* Validate handle. */
 683         if (index >= MAX_OUTSTANDING_COMMANDS) {
 684                 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
 685                     ha->host_no, index));
 686                 qla_printk(KERN_WARNING, ha,
 687                     "Invalid SCSI completion handle %d.\n", index);
 688
 689                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 690                 return;
 691         }
 692
 693         sp = ha->outstanding_cmds[index];
 694         if (sp) {
 695                 /* Free outstanding command slot. */
 696                 ha->outstanding_cmds[index] = NULL;
 697
 698                 if (ha->actthreads)
 699                         ha->actthreads--;
 700                 CMD_COMPL_STATUS(sp->cmd) = 0L;
 701                 CMD_SCSI_STATUS(sp->cmd) = 0L;
 702
 703                 /* Save ISP completion status */
 704                 sp->cmd->result = DID_OK << 16;
 705                 sp->fo_retry_cnt = 0;
 706                 qla2x00_sp_compl(ha, sp);
 707         } else {
 708                 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
 709                     ha->host_no));
 710                 qla_printk(KERN_WARNING, ha,
 711                     "Invalid ISP SCSI completion handle\n");
 712
 713                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 714         }
 715 }
 716
 717 /**
 718  * qla2x00_process_response_queue() - Process response queue entries.
 719  * @ha: SCSI driver HA context
 720  */
 721 void
 722 qla2x00_process_response_queue(struct scsi_qla_host *ha)
 723 {
 724         device_reg_t __iomem *reg = ha->iobase;
 725         sts_entry_t     *pkt;
 726         uint16_t        handle_cnt;
 727         uint16_t        cnt;
 728
 729         if (!ha->flags.online)
 730                 return;
 731
 732         while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
 733                 pkt = (sts_entry_t *)ha->response_ring_ptr;
 734
 735                 ha->rsp_ring_index++;
 736                 if (ha->rsp_ring_index == ha->response_q_length) {
 737                         ha->rsp_ring_index = 0;
 738                         ha->response_ring_ptr = ha->response_ring;
 739                 } else {
 740                         ha->response_ring_ptr++;
 741                 }
 742
 743                 if (pkt->entry_status != 0) {
 744                         DEBUG3(printk(KERN_INFO
 745                             "scsi(%ld): Process error entry.\n", ha->host_no));
 746
 747                         qla2x00_error_entry(ha, pkt);
 748                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
 749                         wmb();
 750                         continue;
 751                 }
 752
 753                 switch (pkt->entry_type) {
 754                 case STATUS_TYPE:
 755                         qla2x00_status_entry(ha, pkt);
 756                         break;
 757                 case STATUS_TYPE_21:
 758                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
 759                         for (cnt = 0; cnt < handle_cnt; cnt++) {
 760                                 qla2x00_process_completed_request(ha,
 761                                     ((sts21_entry_t *)pkt)->handle[cnt]);
 762                         }
 763                         break;
 764                 case STATUS_TYPE_22:
 765                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
 766                         for (cnt = 0; cnt < handle_cnt; cnt++) {
 767                                 qla2x00_process_completed_request(ha,
 768                                     ((sts22_entry_t *)pkt)->handle[cnt]);
 769                         }
 770                         break;
 771                 case STATUS_CONT_TYPE:
 772                         qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
 773                         break;
 774                 case MS_IOCB_TYPE:
 775                         qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
 776                         break;
 777                 case MBX_IOCB_TYPE:
 778                         if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
 779                             !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
 780                                 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
 781                                         qla2x00_process_iodesc(ha,
 782                                             (struct mbx_entry *)pkt);
 783                                 } else {
 784                                         /* MBX IOCB Type Not Supported. */
 785                                         DEBUG4(printk(KERN_WARNING
 786                                             "scsi(%ld): Received unknown MBX "
 787                                             "IOCB response pkt type=%x "
 788                                             "source=%x entry status=%x.\n",
 789                                             ha->host_no, pkt->entry_type,
 790                                             pkt->sys_define,
 791                                             pkt->entry_status));
 792                                 }
 793                                 break;
 794                         }
 795                         /* Fallthrough. */
 796                 default:
 797                         /* Type Not Supported. */
 798                         DEBUG4(printk(KERN_WARNING
 799                             "scsi(%ld): Received unknown response pkt type %x "
 800                             "entry status=%x.\n",
 801                             ha->host_no, pkt->entry_type, pkt->entry_status));
 802                         break;
 803                 }
 804                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
 805                 wmb();
 806         }
 807
 808         /* Adjust ring index */
 809         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
 810 }
 811
 812 /**
 813  * qla2x00_status_entry() - Process a Status IOCB entry.
 814  * @ha: SCSI driver HA context
 815  * @pkt: Entry pointer
 816  */
 817 static void
 818 qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
 819 {
 820         unsigned        b, t, l;
 821         srb_t           *sp;
 822         fc_port_t       *fcport;
 823         struct scsi_cmnd *cp;
 824         uint16_t        comp_status;
 825         uint16_t        scsi_status;
 826         uint8_t         lscsi_status;
 827         int32_t         resid;
 828         uint8_t         sense_sz = 0;
 829         uint16_t        rsp_info_len;
 830
 831         /* Fast path completion. */
 832         if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE &&
 833             (le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) {
 834                 qla2x00_process_completed_request(ha, pkt->handle);
 835
 836                 return;
 837         }
 838
 839         /* Validate handle. */
 840         if (pkt->handle < MAX_OUTSTANDING_COMMANDS) {
 841                 sp = ha->outstanding_cmds[pkt->handle];
 842                 ha->outstanding_cmds[pkt->handle] = NULL;
 843         } else
 844                 sp = NULL;
 845
 846         if (sp == NULL) {
 847                 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
 848                     ha->host_no));
 849                 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
 850
 851                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 852                 if (ha->dpc_wait && !ha->dpc_active)
 853                         up(ha->dpc_wait);
 854
 855                 return;
 856         }
 857         cp = sp->cmd;
 858         if (cp == NULL) {
 859                 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
 860                     "pkt->handle=%d sp=%p sp->state:%d\n",
 861                     ha->host_no, pkt->handle, sp, sp->state));
 862                 qla_printk(KERN_WARNING, ha,
 863                     "Command is NULL: already returned to OS (sp=%p)\n", sp);
 864
 865                 return;
 866         }
 867
 868         if (ha->actthreads)
 869                 ha->actthreads--;
 870
 871         comp_status = le16_to_cpu(pkt->comp_status);
 872         /* Mask of reserved bits 12-15, before we examine the scsi status */
 873         scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK;
 874         lscsi_status = scsi_status & STATUS_MASK;
 875
 876         CMD_ENTRY_STATUS(cp) = pkt->entry_status;
 877         CMD_COMPL_STATUS(cp) = comp_status;
 878         CMD_SCSI_STATUS(cp) = scsi_status;
 879
 880         /* Generate LU queue on cntrl, target, LUN */
 881         b = cp->device->channel;
 882         t = cp->device->id;
 883         l = cp->device->lun,
 884
 885         fcport = sp->fcport;
 886
 887         /* Check for any FCP transport errors. */
 888         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
 889                 rsp_info_len = le16_to_cpu(pkt->rsp_info_len);
 890                 if (rsp_info_len > 3 && pkt->rsp_info[3]) {
 891                         DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
 892                             "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
 893                             "retrying command\n", ha->host_no, b, t, l,
 894                             rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1],
 895                             pkt->rsp_info[2], pkt->rsp_info[3],
 896                             pkt->rsp_info[4], pkt->rsp_info[5],
 897                             pkt->rsp_info[6], pkt->rsp_info[7]));
 898
 899                         cp->result = DID_BUS_BUSY << 16;
 900                         qla2x00_sp_compl(ha, sp);
 901                         return;
 902                 }
 903         }
 904
 905         /*
 906          * Based on Host and scsi status generate status code for Linux
 907          */
 908         switch (comp_status) {
 909         case CS_COMPLETE:
 910                 if (scsi_status == 0) {
 911                         cp->result = DID_OK << 16;
 912                         break;
 913                 }
 914                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
 915                         resid = le32_to_cpu(pkt->residual_length);
 916                         cp->resid = resid;
 917                         CMD_RESID_LEN(cp) = resid;
 918                 }
 919                 cp->result = DID_OK << 16 | lscsi_status;
 920
 921                 if (lscsi_status != SS_CHECK_CONDITION)
 922                         break;
 923
 924                 /*
 925                  * Copy Sense Data into sense buffer
 926                  */
 927                 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
 928
 929                 if (!(scsi_status & SS_SENSE_LEN_VALID))
 930                         break;
 931
 932                 if (le16_to_cpu(pkt->req_sense_length) <
 933                     sizeof(cp->sense_buffer))
 934                         sense_sz = le16_to_cpu(pkt->req_sense_length);
 935                 else
 936                         sense_sz = sizeof(cp->sense_buffer);
 937
 938                 CMD_ACTUAL_SNSLEN(cp) = sense_sz;
 939                 sp->request_sense_length = sense_sz;
 940                 sp->request_sense_ptr = cp->sense_buffer;
 941
 942                 if (sp->request_sense_length > 32)
 943                         sense_sz = 32;
 944
 945                 memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
 946
 947                 sp->request_sense_ptr += sense_sz;
 948                 sp->request_sense_length -= sense_sz;
 949                 if (sp->request_sense_length != 0)
 950                         ha->status_srb = sp;
 951
 952                 DEBUG5(printk("%s(): Check condition Sense data, "
 953                     "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
 954                     __func__, ha->host_no, b, t, l, cp,
 955                     cp->serial_number));
 956                 if (sense_sz)
 957                         DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
 958                             CMD_ACTUAL_SNSLEN(cp)));
 959                 break;
 960
 961         case CS_DATA_UNDERRUN:
 962                 DEBUG2(printk(KERN_INFO
 963                     "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
 964                     ha->host_no, t, l, comp_status, scsi_status));
 965
 966                 resid = le32_to_cpu(pkt->residual_length);
 967                 if (scsi_status & SS_RESIDUAL_UNDER) {
 968                         cp->resid = resid;
 969                         CMD_RESID_LEN(cp) = resid;
 970                 }
 971
 972                 /*
 973                  * Check to see if SCSI Status is non zero. If so report SCSI
 974                  * Status.
 975                  */
 976                 if (lscsi_status != 0) {
 977                         cp->result = DID_OK << 16 | lscsi_status;
 978
 979                         if (lscsi_status != SS_CHECK_CONDITION)
 980                                 break;
 981
 982                         /* Copy Sense Data into sense buffer */
 983                         memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
 984
 985                         if (!(scsi_status & SS_SENSE_LEN_VALID))
 986                                 break;
 987
 988                         if (le16_to_cpu(pkt->req_sense_length) <
 989                             sizeof(cp->sense_buffer))
 990                                 sense_sz = le16_to_cpu(pkt->req_sense_length);
 991                         else
 992                                 sense_sz = sizeof(cp->sense_buffer);
 993
 994                         CMD_ACTUAL_SNSLEN(cp) = sense_sz;
 995                         sp->request_sense_length = sense_sz;
 996                         sp->request_sense_ptr = cp->sense_buffer;
 997
 998                         if (sp->request_sense_length > 32)
 999                                 sense_sz = 32;
1000
1001                         memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
1002
1003                         sp->request_sense_ptr += sense_sz;
1004                         sp->request_sense_length -= sense_sz;
1005                         if (sp->request_sense_length != 0)
1006                                 ha->status_srb = sp;
1007
1008                         DEBUG5(printk("%s(): Check condition Sense data, "
1009                             "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1010                             __func__, ha->host_no, b, t, l, cp,
1011                             cp->serial_number));
1012                         if (sense_sz)
1013                                 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1014                                     CMD_ACTUAL_SNSLEN(cp)));
1015                 } else {
1016                         /*
1017                          * If RISC reports underrun and target does not report
1018                          * it then we must have a lost frame, so tell upper
1019                          * layer to retry it by reporting a bus busy.
1020                          */
1021                         if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1022                                 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1023                                     "frame(s) detected (%x of %x bytes)..."
1024                                     "retrying command.\n",
1025                                     ha->host_no, b, t, l, resid,
1026                                     cp->request_bufflen));
1027
1028                                 cp->result = DID_BUS_BUSY << 16;
1029                                 ha->dropped_frame_error_cnt++;
1030                                 break;
1031                         }
1032
1033                         /* Handle mid-layer underflow */
1034                         if ((unsigned)(cp->request_bufflen - resid) <
1035                             cp->underflow) {
1036                                 qla_printk(KERN_INFO, ha,
1037                                     "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1038                                     "detected (%x of %x bytes)...returning "
1039                                     "error status.\n",
1040                                     ha->host_no, b, t, l, resid,
1041                                     cp->request_bufflen);
1042
1043                                 cp->result = DID_ERROR << 16;
1044                                 break;
1045                         }
1046
1047                         /* Everybody online, looking good... */
1048                         cp->result = DID_OK << 16;
1049                 }
1050                 break;
1051
1052         case CS_DATA_OVERRUN:
1053                 DEBUG2(printk(KERN_INFO
1054                     "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1055                     ha->host_no, t, l, comp_status, scsi_status));
1056                 DEBUG2(printk(KERN_INFO
1057                     "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1058                     cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1059                     cp->cmnd[4], cp->cmnd[5]));
1060                 DEBUG2(printk(KERN_INFO
1061                     "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1062                     "status!\n",
1063                     cp->serial_number, cp->request_bufflen,
1064                     le32_to_cpu(pkt->residual_length)));
1065
1066                 cp->result = DID_ERROR << 16;
1067                 break;
1068
1069         case CS_PORT_LOGGED_OUT:
1070         case CS_PORT_CONFIG_CHG:
1071         case CS_PORT_BUSY:
1072         case CS_INCOMPLETE:
1073         case CS_PORT_UNAVAILABLE:
1074                 /*
1075                  * If the port is in Target Down state, return all IOs for this
1076                  * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1077                  * retry_queue.
1078                  */
1079                 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1080                     "pid=%ld, compl status=0x%x, port state=0x%x\n",
1081                     ha->host_no, t, l, cp->serial_number, comp_status,
1082                     atomic_read(&fcport->state)));
1083
1084                 cp->result = DID_BUS_BUSY << 16;
1085                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1086                         qla2x00_mark_device_lost(ha, fcport, 1);
1087                 }
1088                 break;
1089
1090         case CS_RESET:
1091                 DEBUG2(printk(KERN_INFO
1092                     "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1093                     ha->host_no, comp_status, scsi_status));
1094
1095                 cp->result = DID_RESET << 16;
1096                 break;
1097
1098         case CS_ABORTED:
1099                 /*
1100                  * hv2.19.12 - DID_ABORT does not retry the request if we
1101                  * aborted this request then abort otherwise it must be a
1102                  * reset.
1103                  */
1104                 DEBUG2(printk(KERN_INFO
1105                     "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1106                     ha->host_no, comp_status, scsi_status));
1107
1108                 cp->result = DID_RESET << 16;
1109                 break;
1110
1111         case CS_TIMEOUT:
1112                 DEBUG2(printk(KERN_INFO
1113                     "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1114                     "sflags=%x.\n", ha->host_no, b, t, l, comp_status,
1115                     scsi_status, le16_to_cpu(pkt->status_flags)));
1116
1117                 cp->result = DID_BUS_BUSY << 16;
1118
1119                 /* Check to see if logout occurred */
1120                 if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) {
1121                         qla2x00_mark_device_lost(ha, fcport, 1);
1122                 }
1123                 break;
1124
1125         case CS_QUEUE_FULL:
1126                 DEBUG2(printk(KERN_INFO
1127                     "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1128                     ha->host_no, comp_status, scsi_status));
1129
1130                 /* SCSI Mid-Layer handles device queue full */
1131
1132                 cp->result = DID_OK << 16 | lscsi_status;
1133
1134                 break;
1135
1136         default:
1137                 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1138                     "0x%x-0x%x.\n",
1139                     ha->host_no, comp_status, scsi_status));
1140                 qla_printk(KERN_INFO, ha,
1141                     "Unknown status detected 0x%x-0x%x.\n",
1142                     comp_status, scsi_status);
1143
1144                 cp->result = DID_ERROR << 16;
1145                 break;
1146         }
1147
1148         /* Place command on done queue. */
1149         if (ha->status_srb == NULL)
1150                 qla2x00_sp_compl(ha, sp);
1151 }
1152
1153 /**
1154  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1155  * @ha: SCSI driver HA context
1156  * @pkt: Entry pointer
1157  *
1158  * Extended sense data.
1159  */
1160 static void
1161 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1162 {
1163         uint8_t         sense_sz = 0;
1164         srb_t           *sp = ha->status_srb;
1165         struct scsi_cmnd *cp;
1166
1167         if (sp != NULL && sp->request_sense_length != 0) {
1168                 cp = sp->cmd;
1169                 if (cp == NULL) {
1170                         DEBUG2(printk("%s(): Cmd already returned back to OS "
1171                             "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1172                         qla_printk(KERN_INFO, ha,
1173                             "cmd is NULL: already returned to OS (sp=%p)\n",
1174                             sp);
1175
1176                         ha->status_srb = NULL;
1177                         return;
1178                 }
1179
1180                 if (sp->request_sense_length > sizeof(pkt->data)) {
1181                         sense_sz = sizeof(pkt->data);
1182                 } else {
1183                         sense_sz = sp->request_sense_length;
1184                 }
1185
1186                 /* Move sense data. */
1187                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1188                 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1189
1190                 sp->request_sense_ptr += sense_sz;
1191                 sp->request_sense_length -= sense_sz;
1192
1193                 /* Place command on done queue. */
1194                 if (sp->request_sense_length == 0) {
1195                         ha->status_srb = NULL;
1196                         qla2x00_sp_compl(ha, sp);
1197                 }
1198         }
1199 }
1200
1201 /**
1202  * qla2x00_error_entry() - Process an error entry.
1203  * @ha: SCSI driver HA context
1204  * @pkt: Entry pointer
1205  */
1206 static void
1207 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1208 {
1209         srb_t *sp;
1210
1211 #if defined(QL_DEBUG_LEVEL_2)
1212         if (pkt->entry_status & RF_INV_E_ORDER)
1213                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1214         else if (pkt->entry_status & RF_INV_E_COUNT)
1215                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1216         else if (pkt->entry_status & RF_INV_E_PARAM)
1217                 qla_printk(KERN_ERR, ha,
1218                     "%s: Invalid Entry Parameter\n", __func__);
1219         else if (pkt->entry_status & RF_INV_E_TYPE)
1220                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1221         else if (pkt->entry_status & RF_BUSY)
1222                 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1223         else
1224                 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1225 #endif
1226
1227         /* Validate handle. */
1228         if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1229                 sp = ha->outstanding_cmds[pkt->handle];
1230         else
1231                 sp = NULL;
1232
1233         if (sp) {
1234                 /* Free outstanding command slot. */
1235                 ha->outstanding_cmds[pkt->handle] = NULL;
1236                 if (ha->actthreads)
1237                         ha->actthreads--;
1238                 /* Bad payload or header */
1239                 if (pkt->entry_status &
1240                     (RF_INV_E_ORDER | RF_INV_E_COUNT |
1241                      RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1242                         sp->cmd->result = DID_ERROR << 16;
1243                 } else if (pkt->entry_status & RF_BUSY) {
1244                         sp->cmd->result = DID_BUS_BUSY << 16;
1245                 } else {
1246                         sp->cmd->result = DID_ERROR << 16;
1247                 }
1248                 qla2x00_sp_compl(ha, sp);
1249
1250         } else if (pkt->entry_type == COMMAND_A64_TYPE ||
1251             pkt->entry_type == COMMAND_TYPE) {
1252                 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1253                     ha->host_no));
1254                 qla_printk(KERN_WARNING, ha,
1255                     "Error entry - invalid handle\n");
1256
1257                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1258                 if (ha->dpc_wait && !ha->dpc_active)
1259                         up(ha->dpc_wait);
1260         }
1261 }
1262
1263 /**
1264  * qla2x00_ms_entry() - Process a Management Server entry.
1265  * @ha: SCSI driver HA context
1266  * @index: Response queue out pointer
1267  */
1268 static void
1269 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1270 {
1271         srb_t          *sp;
1272
1273         DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1274             __func__, ha->host_no, pkt, pkt->handle1));
1275
1276         /* Validate handle. */
1277         if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1278                 sp = ha->outstanding_cmds[pkt->handle1];
1279         else
1280                 sp = NULL;
1281
1282         if (sp == NULL) {
1283                 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1284                     ha->host_no));
1285                 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1286
1287                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1288                 return;
1289         }
1290
1291         CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1292         CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1293
1294         /* Free outstanding command slot. */
1295         ha->outstanding_cmds[pkt->handle1] = NULL;
1296
1297         qla2x00_sp_compl(ha, sp);
1298 }