2 * QLOGIC LINUX SOFTWARE
4 * QLogic ISP2x00 device driver for Linux 2.6.x
5 * Copyright (C) 2003-2004 QLogic Corporation
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
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.
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 *);
30 static int qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *);
33 * qla2x00_intr_handler() - Process interrupts for the ISP.
35 * @dev_id: SCSI driver HA context
38 * Called by system whenever the host adapter generates an interrupt.
40 * Returns handled flag.
43 qla2x00_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
49 unsigned long flags = 0;
50 unsigned long mbx_flags = 0;
51 unsigned long intr_iter;
55 /* Don't loop forever, interrupt are OFF */
58 ha = (scsi_qla_host_t *) dev_id;
61 "%s(): NULL host pointer\n", __func__);
67 spin_lock_irqsave(&ha->hardware_lock, flags);
74 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
75 if ((RD_REG_WORD(®->istatus) & ISR_RISC_INT) == 0)
78 if (RD_REG_WORD(®->semaphore) & BIT_0) {
79 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
80 RD_REG_WORD(®->hccr);
82 /* Get mailbox data. */
83 mbx = RD_MAILBOX_REG(ha, reg, 0);
84 if (mbx > 0x3fff && mbx < 0x8000) {
85 qla2x00_mbx_completion(ha,
87 status |= MBX_INTERRUPT;
88 } else if (mbx > 0x7fff && mbx < 0xc000) {
89 qla2x00_async_event(ha, mbx);
92 DEBUG2(printk("scsi(%ld): Unrecognized "
93 "interrupt type (%d)\n",
96 /* Release mailbox registers. */
97 WRT_REG_WORD(®->semaphore, 0);
98 /* Workaround for ISP2100 chip. */
100 RD_REG_WORD(®->semaphore);
102 qla2x00_process_response_queue(ha);
104 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
105 RD_REG_WORD(®->hccr);
107 } else /* IS_QLA23XX(ha) */ {
108 stat = RD_REG_DWORD(®->u.isp2300.host_status);
109 if (stat & HSR_RISC_PAUSED) {
110 hccr = RD_REG_WORD(®->hccr);
111 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
112 qla_printk(KERN_INFO, ha,
113 "Parity error -- HCCR=%x.\n", hccr);
115 qla_printk(KERN_INFO, ha,
116 "RISC paused -- HCCR=%x\n", hccr);
119 * Issue a "HARD" reset in order for the RISC
120 * interrupt bit to be cleared. Schedule a big
121 * hammmer to get out of the RISC PAUSED state.
123 WRT_REG_WORD(®->hccr, HCCR_RESET_RISC);
124 RD_REG_WORD(®->hccr);
125 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
127 } else if ((stat & HSR_RISC_INT) == 0)
131 switch (stat & 0xff) {
133 qla2x00_process_response_queue(ha);
139 qla2x00_mbx_completion(ha, (uint16_t)mbx);
140 status |= MBX_INTERRUPT;
142 /* Release mailbox registers. */
143 WRT_REG_WORD(®->semaphore, 0);
146 qla2x00_async_event(ha, mbx);
149 mbx = mbx << 16 | MBA_CMPLT_1_16BIT;
150 qla2x00_async_event(ha, mbx);
153 mbx = mbx << 16 | MBA_SCSI_COMPLETION;
154 qla2x00_async_event(ha, mbx);
157 DEBUG2(printk("scsi(%ld): Unrecognized "
158 "interrupt type (%d)\n",
159 ha->host_no, stat & 0xff));
162 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
163 RD_REG_WORD_RELAXED(®->hccr);
167 spin_unlock_irqrestore(&ha->hardware_lock, flags);
170 ha->last_irq_cpu = smp_processor_id();
173 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
174 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
176 /* There was a mailbox completion */
177 DEBUG3(printk("%s(%ld): Going to get mbx reg lock.\n",
178 __func__, ha->host_no));
180 spin_lock_irqsave(&ha->mbx_reg_lock, mbx_flags);
182 if (ha->mcp == NULL) {
183 DEBUG3(printk("%s(%ld): Error mbx pointer.\n",
184 __func__, ha->host_no));
186 DEBUG3(printk("%s(%ld): Going to set mbx intr flags. "
188 __func__, ha->host_no, ha->mcp->mb[0]));
190 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
192 DEBUG3(printk("%s(%ld): Going to wake up mbx function for "
194 __func__, ha->host_no));
196 up(&ha->mbx_intr_sem);
198 DEBUG3(printk("%s(%ld): Going to release mbx reg lock.\n",
199 __func__, ha->host_no));
201 spin_unlock_irqrestore(&ha->mbx_reg_lock, mbx_flags);
204 if (!list_empty(&ha->done_queue))
207 /* Wakeup the DPC routine */
208 if ((!ha->flags.mbox_busy &&
209 (test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
210 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
211 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))) &&
212 ha->dpc_wait && !ha->dpc_active) {
217 return (IRQ_HANDLED);
221 * qla2x00_mbx_completion() - Process mailbox command completions.
222 * @ha: SCSI driver HA context
223 * @mb0: Mailbox0 register
226 qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
230 device_reg_t *reg = ha->iobase;
232 /* Load return mailbox registers. */
233 ha->flags.mbox_int = 1;
234 ha->mailbox_out[0] = mb0;
235 wptr = (uint16_t *)MAILBOX_REG(ha, reg, 1);
237 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
238 if (IS_QLA2200(ha) && cnt == 8)
239 wptr = (uint16_t *)MAILBOX_REG(ha, reg, 8);
240 if (cnt == 4 || cnt == 5)
241 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
243 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
249 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
250 __func__, ha->host_no, ha->mcp->mb[0]));
252 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
253 __func__, ha->host_no));
258 * qla2x00_async_event() - Process aynchronous events.
259 * @ha: SCSI driver HA context
260 * @mb0: Mailbox0 register
263 qla2x00_async_event(scsi_qla_host_t *ha, uint32_t mbx)
265 static char *link_speeds[5] = { "1", "2", "4", "?", "10" };
271 device_reg_t *reg = ha->iobase;
272 uint32_t rscn_entry, host_pid;
273 uint8_t rscn_queue_index;
275 /* Setup to process RIO completion. */
279 case MBA_SCSI_COMPLETION:
280 if (IS_QLA2100(ha) || IS_QLA2200(ha))
281 handles[0] = le32_to_cpu(
282 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
283 RD_MAILBOX_REG(ha, reg, 1));
285 handles[0] = le32_to_cpu(
286 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
290 case MBA_CMPLT_1_16BIT:
291 if (IS_QLA2100(ha) || IS_QLA2200(ha))
292 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
294 handles[0] = MSW(mbx);
296 mb[0] = MBA_SCSI_COMPLETION;
298 case MBA_CMPLT_2_16BIT:
299 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
300 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
302 mb[0] = MBA_SCSI_COMPLETION;
304 case MBA_CMPLT_3_16BIT:
305 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
306 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
307 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
309 mb[0] = MBA_SCSI_COMPLETION;
311 case MBA_CMPLT_4_16BIT:
312 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
313 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
314 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
315 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
317 mb[0] = MBA_SCSI_COMPLETION;
319 case MBA_CMPLT_5_16BIT:
320 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
321 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
322 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
323 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
324 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
326 mb[0] = MBA_SCSI_COMPLETION;
328 case MBA_CMPLT_2_32BIT:
329 handles[0] = le32_to_cpu(
330 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
331 RD_MAILBOX_REG(ha, reg, 1));
332 handles[1] = le32_to_cpu(
333 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
334 RD_MAILBOX_REG(ha, reg, 6));
336 mb[0] = MBA_SCSI_COMPLETION;
343 case MBA_SCSI_COMPLETION: /* Fast Post */
344 if (!ha->flags.online)
347 for (cnt = 0; cnt < handle_cnt; cnt++)
348 qla2x00_process_completed_request(ha, handles[cnt]);
351 case MBA_RESET: /* Reset */
352 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
354 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
357 case MBA_SYSTEM_ERR: /* System Error */
358 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
359 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
360 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
362 qla_printk(KERN_INFO, ha,
363 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
364 mb[1], mb[2], mb[3]);
366 if (IS_QLA2100(ha) || IS_QLA2200(ha))
367 qla2100_fw_dump(ha, 1);
369 qla2300_fw_dump(ha, 1);
370 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
373 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
374 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
376 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
378 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
381 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
382 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
384 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
386 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
389 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
390 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
394 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
395 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
397 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
399 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
401 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
402 atomic_set(&ha->loop_state, LOOP_DOWN);
403 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
404 qla2x00_mark_all_devices_lost(ha);
407 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
409 ha->flags.management_server_logged_in = 0;
411 /* Update AEN queue. */
412 qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
417 case MBA_LOOP_UP: /* Loop Up Event */
418 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
420 ha->link_data_rate = 0;
421 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
422 link_speed = link_speeds[0];
424 link_speed = link_speeds[3];
426 link_speed = link_speeds[mb[1]];
427 ha->link_data_rate = mb[1];
430 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
431 ha->host_no, link_speed));
432 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
435 ha->flags.management_server_logged_in = 0;
437 /* Update AEN queue. */
438 qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
441 case MBA_LOOP_DOWN: /* Loop Down Event */
442 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN.\n",
444 qla_printk(KERN_INFO, ha, "LOOP DOWN detected.\n");
446 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
447 atomic_set(&ha->loop_state, LOOP_DOWN);
448 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
449 ha->device_flags |= DFLG_NO_CABLE;
450 qla2x00_mark_all_devices_lost(ha);
453 ha->flags.management_server_logged_in = 0;
454 ha->link_data_rate = 0;
456 /* Update AEN queue. */
457 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
460 case MBA_LIP_RESET: /* LIP reset occurred */
461 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
463 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
464 ha->host_no, mb[1]));
465 qla_printk(KERN_INFO, ha,
466 "LIP reset occured (%x).\n", mb[1]);
468 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
469 atomic_set(&ha->loop_state, LOOP_DOWN);
470 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
471 qla2x00_mark_all_devices_lost(ha);
474 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
476 ha->operating_mode = LOOP;
477 ha->flags.management_server_logged_in = 0;
479 /* Update AEN queue. */
480 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
485 case MBA_POINT_TO_POINT: /* Point-to-Point */
489 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
493 * Until there's a transition from loop down to loop up, treat
494 * this as loop down only.
496 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
497 atomic_set(&ha->loop_state, LOOP_DOWN);
498 if (!atomic_read(&ha->loop_down_timer))
499 atomic_set(&ha->loop_down_timer,
501 qla2x00_mark_all_devices_lost(ha);
504 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
505 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
507 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
510 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
514 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
516 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
519 qla_printk(KERN_INFO, ha,
520 "Configuration change detected: value=%x.\n", mb[1]);
522 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
523 atomic_set(&ha->loop_state, LOOP_DOWN);
524 if (!atomic_read(&ha->loop_down_timer))
525 atomic_set(&ha->loop_down_timer,
527 qla2x00_mark_all_devices_lost(ha);
530 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
531 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
534 case MBA_PORT_UPDATE: /* Port database update */
535 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
536 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
539 * If a single remote port just logged into (or logged out of)
540 * us, create a new entry in our rscn fcports list and handle
541 * the event like an RSCN.
543 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
544 !IS_QLA6322(ha) && ha->flags.init_done && mb[1] != 0xffff &&
545 ((ha->operating_mode == P2P && mb[1] != 0) ||
546 (ha->operating_mode != P2P && mb[1] !=
547 SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
549 fc_port_t *rscn_fcport;
551 /* Create new fcport for login. */
552 rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
554 DEBUG14(printk("scsi(%ld): Port Update -- "
555 "creating RSCN fcport %p for login.\n",
556 ha->host_no, rscn_fcport));
558 rscn_fcport->loop_id = mb[1];
559 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
560 atomic_set(&rscn_fcport->state,
562 list_add_tail(&rscn_fcport->list,
565 rval = qla2x00_handle_port_rscn(ha, 0,
567 if (rval == QLA_SUCCESS)
570 DEBUG14(printk("scsi(%ld): Port Update -- "
571 "-- unable to allocate RSCN fcport "
572 "login.\n", ha->host_no));
577 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
578 * event etc. earlier indicating loop is down) then process
579 * it. Otherwise ignore it and Wait for RSCN to come in.
581 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
582 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
583 "ignored.\n", ha->host_no));
587 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
589 DEBUG(printk(KERN_INFO
590 "scsi(%ld): Port database changed %04x %04x.\n",
591 ha->host_no, mb[1], mb[2]));
594 * Mark all devices as missing so we will login again.
596 atomic_set(&ha->loop_state, LOOP_UP);
598 atomic_set(&ha->loop_down_timer, 0);
599 qla2x00_mark_all_devices_lost(ha);
601 ha->flags.rscn_queue_overflow = 1;
603 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
604 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
606 /* Update AEN queue. */
607 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
610 case MBA_RSCN_UPDATE: /* State Change Registration */
611 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
612 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
614 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
616 DEBUG(printk(KERN_INFO
617 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
618 ha->host_no, mb[1], mb[2]));
620 rscn_entry = (mb[1] << 16) | mb[2];
621 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
623 if (rscn_entry == host_pid) {
624 DEBUG(printk(KERN_INFO
625 "scsi(%ld): Ignoring RSCN update to local host "
627 ha->host_no, host_pid));
631 rscn_queue_index = ha->rscn_in_ptr + 1;
632 if (rscn_queue_index == MAX_RSCN_COUNT)
633 rscn_queue_index = 0;
634 if (rscn_queue_index != ha->rscn_out_ptr) {
635 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
636 ha->rscn_in_ptr = rscn_queue_index;
638 ha->flags.rscn_queue_overflow = 1;
641 atomic_set(&ha->loop_state, LOOP_UPDATE);
642 atomic_set(&ha->loop_down_timer, 0);
643 ha->flags.management_server_logged_in = 0;
645 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
646 set_bit(RSCN_UPDATE, &ha->dpc_flags);
648 /* Update AEN queue. */
649 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
652 /* case MBA_RIO_RESPONSE: */
653 case MBA_ZIO_RESPONSE:
654 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
656 DEBUG(printk(KERN_INFO
657 "scsi(%ld): [R|Z]IO update completion.\n",
660 qla2x00_process_response_queue(ha);
666 * qla2x00_process_completed_request() - Process a Fast Post response.
667 * @ha: SCSI driver HA context
671 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
675 /* Validate handle. */
676 if (index >= MAX_OUTSTANDING_COMMANDS) {
677 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
678 ha->host_no, index));
679 qla_printk(KERN_WARNING, ha,
680 "Invalid SCSI completion handle %d.\n", index);
682 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
686 sp = ha->outstanding_cmds[index];
688 /* Free outstanding command slot. */
689 ha->outstanding_cmds[index] = NULL;
693 sp->lun_queue->out_cnt--;
694 CMD_COMPL_STATUS(sp->cmd) = 0L;
695 CMD_SCSI_STATUS(sp->cmd) = 0L;
697 /* Save ISP completion status */
698 sp->cmd->result = DID_OK << 16;
699 sp->fo_retry_cnt = 0;
700 add_to_done_queue(ha, sp);
702 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
704 qla_printk(KERN_WARNING, ha,
705 "Invalid ISP SCSI completion handle\n");
707 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
712 * qla2x00_process_response_queue() - Process response queue entries.
713 * @ha: SCSI driver HA context
716 qla2x00_process_response_queue(struct scsi_qla_host *ha)
718 device_reg_t *reg = ha->iobase;
723 if (!ha->flags.online)
726 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
727 pkt = (sts_entry_t *)ha->response_ring_ptr;
729 ha->rsp_ring_index++;
730 if (ha->rsp_ring_index == ha->response_q_length) {
731 ha->rsp_ring_index = 0;
732 ha->response_ring_ptr = ha->response_ring;
734 ha->response_ring_ptr++;
737 if (pkt->entry_status != 0) {
738 DEBUG3(printk(KERN_INFO
739 "scsi(%ld): Process error entry.\n", ha->host_no));
741 qla2x00_error_entry(ha, pkt);
742 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
747 switch (pkt->entry_type) {
749 qla2x00_status_entry(ha, pkt);
752 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
753 for (cnt = 0; cnt < handle_cnt; cnt++) {
754 qla2x00_process_completed_request(ha,
755 ((sts21_entry_t *)pkt)->handle[cnt]);
759 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
760 for (cnt = 0; cnt < handle_cnt; cnt++) {
761 qla2x00_process_completed_request(ha,
762 ((sts22_entry_t *)pkt)->handle[cnt]);
765 case STATUS_CONT_TYPE:
766 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
769 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
772 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
773 !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
774 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
775 qla2x00_process_iodesc(ha,
776 (struct mbx_entry *)pkt);
778 /* MBX IOCB Type Not Supported. */
779 DEBUG4(printk(KERN_WARNING
780 "scsi(%ld): Received unknown MBX "
781 "IOCB response pkt type=%x "
782 "source=%x entry status=%x.\n",
783 ha->host_no, pkt->entry_type,
791 /* Type Not Supported. */
792 DEBUG4(printk(KERN_WARNING
793 "scsi(%ld): Received unknown response pkt type %x "
794 "entry status=%x.\n",
795 ha->host_no, pkt->entry_type, pkt->entry_status));
798 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
802 /* Adjust ring index */
803 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
807 * qla2x00_status_entry() - Process a Status IOCB entry.
808 * @ha: SCSI driver HA context
809 * @pkt: Entry pointer
812 qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
820 struct scsi_cmnd *cp;
821 uint16_t comp_status;
822 uint16_t scsi_status;
823 uint8_t lscsi_status;
825 uint8_t sense_sz = 0;
826 uint16_t rsp_info_len;
828 /* Fast path completion. */
829 if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE &&
830 (le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) {
831 qla2x00_process_completed_request(ha, pkt->handle);
836 /* Validate handle. */
837 if (pkt->handle < MAX_OUTSTANDING_COMMANDS) {
838 sp = ha->outstanding_cmds[pkt->handle];
839 ha->outstanding_cmds[pkt->handle] = NULL;
844 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
846 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
848 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
849 if (ha->dpc_wait && !ha->dpc_active)
856 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
857 "pkt->handle=%d sp=%p sp->state:%d\n",
858 ha->host_no, pkt->handle, sp, sp->state));
859 qla_printk(KERN_WARNING, ha,
860 "Command is NULL: already returned to OS (sp=%p)\n", sp);
868 if (sp->lun_queue == NULL) {
869 DEBUG2(printk("scsi(%ld): Status Entry invalid lun pointer.\n",
871 qla_printk(KERN_WARNING, ha,
872 "Status Entry invalid lun pointer.\n");
874 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
875 if (ha->dpc_wait && !ha->dpc_active)
881 sp->lun_queue->out_cnt--;
883 comp_status = le16_to_cpu(pkt->comp_status);
884 /* Mask of reserved bits 12-15, before we examine the scsi status */
885 scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK;
886 lscsi_status = scsi_status & STATUS_MASK;
888 CMD_ENTRY_STATUS(cp) = pkt->entry_status;
889 CMD_COMPL_STATUS(cp) = comp_status;
890 CMD_SCSI_STATUS(cp) = scsi_status;
892 /* Generate LU queue on cntrl, target, LUN */
893 b = cp->device->channel;
901 * If loop is in transient state Report DID_BUS_BUSY
903 if ((comp_status != CS_COMPLETE || scsi_status != 0)) {
904 if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
905 (atomic_read(&ha->loop_down_timer) ||
906 atomic_read(&ha->loop_state) != LOOP_READY)) {
908 DEBUG2(printk("scsi(%ld:%d:%d:%d): Loop Not Ready - "
910 ha->host_no, b, t, l, cp->serial_number));
912 qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
913 add_to_retry_queue(ha, sp);
918 /* Check for any FCP transport errors. */
919 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
920 rsp_info_len = le16_to_cpu(pkt->rsp_info_len);
921 if (rsp_info_len > 3 && pkt->rsp_info[3]) {
922 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
923 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
924 "retrying command\n", ha->host_no, b, t, l,
925 rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1],
926 pkt->rsp_info[2], pkt->rsp_info[3],
927 pkt->rsp_info[4], pkt->rsp_info[5],
928 pkt->rsp_info[6], pkt->rsp_info[7]));
930 cp->result = DID_BUS_BUSY << 16;
931 add_to_done_queue(ha, sp);
937 * Based on Host and scsi status generate status code for Linux
939 switch (comp_status) {
941 if (scsi_status == 0) {
942 cp->result = DID_OK << 16;
945 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
946 resid = le32_to_cpu(pkt->residual_length);
948 CMD_RESID_LEN(cp) = resid;
950 if (lscsi_status == SS_BUSY_CONDITION) {
951 cp->result = DID_BUS_BUSY << 16 | lscsi_status;
955 cp->result = DID_OK << 16 | lscsi_status;
957 if (lscsi_status != SS_CHECK_CONDITION)
961 * Copy Sense Data into sense buffer
963 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
965 if (!(scsi_status & SS_SENSE_LEN_VALID))
968 if (le16_to_cpu(pkt->req_sense_length) <
969 sizeof(cp->sense_buffer))
970 sense_sz = le16_to_cpu(pkt->req_sense_length);
972 sense_sz = sizeof(cp->sense_buffer) - 1;
974 CMD_ACTUAL_SNSLEN(cp) = sense_sz;
975 sp->request_sense_length = sense_sz;
976 sp->request_sense_ptr = cp->sense_buffer;
978 if (sp->request_sense_length > 32)
981 memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
983 sp->request_sense_ptr += sense_sz;
984 sp->request_sense_length -= sense_sz;
985 if (sp->request_sense_length != 0)
988 if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
989 qla2x00_check_sense(cp, lq) == QLA_SUCCESS) {
990 /* Throw away status_cont if any */
991 ha->status_srb = NULL;
992 add_to_scsi_retry_queue(ha, sp);
996 DEBUG5(printk("%s(): Check condition Sense data, "
997 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
998 __func__, ha->host_no, b, t, l, cp,
1001 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1002 CMD_ACTUAL_SNSLEN(cp)));
1005 case CS_DATA_UNDERRUN:
1006 DEBUG2(printk(KERN_INFO
1007 "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
1008 ha->host_no, t, l, comp_status, scsi_status));
1010 resid = le32_to_cpu(pkt->residual_length);
1011 if (scsi_status & SS_RESIDUAL_UNDER) {
1013 CMD_RESID_LEN(cp) = resid;
1017 * Check to see if SCSI Status is non zero. If so report SCSI
1020 if (lscsi_status != 0) {
1021 if (lscsi_status == SS_BUSY_CONDITION) {
1022 cp->result = DID_BUS_BUSY << 16 |
1027 cp->result = DID_OK << 16 | lscsi_status;
1029 if (lscsi_status != SS_CHECK_CONDITION)
1032 /* Copy Sense Data into sense buffer */
1033 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
1035 if (!(scsi_status & SS_SENSE_LEN_VALID))
1038 if (le16_to_cpu(pkt->req_sense_length) <
1039 sizeof(cp->sense_buffer))
1040 sense_sz = le16_to_cpu(pkt->req_sense_length);
1042 sense_sz = sizeof(cp->sense_buffer) - 1;
1044 CMD_ACTUAL_SNSLEN(cp) = sense_sz;
1045 sp->request_sense_length = sense_sz;
1046 sp->request_sense_ptr = cp->sense_buffer;
1048 if (sp->request_sense_length > 32)
1051 memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
1053 sp->request_sense_ptr += sense_sz;
1054 sp->request_sense_length -= sense_sz;
1055 if (sp->request_sense_length != 0)
1056 ha->status_srb = sp;
1058 if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
1059 (qla2x00_check_sense(cp, lq) == QLA_SUCCESS)) {
1060 ha->status_srb = NULL;
1061 add_to_scsi_retry_queue(ha, sp);
1064 DEBUG5(printk("%s(): Check condition Sense data, "
1065 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1066 __func__, ha->host_no, b, t, l, cp,
1067 cp->serial_number));
1069 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1070 CMD_ACTUAL_SNSLEN(cp)));
1073 * If RISC reports underrun and target does not report
1074 * it then we must have a lost frame, so tell upper
1075 * layer to retry it by reporting a bus busy.
1077 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1078 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1079 "frame(s) detected (%x of %x bytes)..."
1080 "retrying command.\n",
1081 ha->host_no, b, t, l, resid,
1082 cp->request_bufflen));
1084 cp->result = DID_BUS_BUSY << 16;
1085 ha->dropped_frame_error_cnt++;
1089 /* Handle mid-layer underflow */
1090 if ((unsigned)(cp->request_bufflen - resid) <
1092 qla_printk(KERN_INFO, ha,
1093 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1094 "detected (%x of %x bytes)...returning "
1096 ha->host_no, b, t, l, resid,
1097 cp->request_bufflen);
1099 cp->result = DID_ERROR << 16;
1103 /* Everybody online, looking good... */
1104 cp->result = DID_OK << 16;
1108 case CS_DATA_OVERRUN:
1109 DEBUG2(printk(KERN_INFO
1110 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1111 ha->host_no, t, l, comp_status, scsi_status));
1112 DEBUG2(printk(KERN_INFO
1113 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1114 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1115 cp->cmnd[4], cp->cmnd[5]));
1116 DEBUG2(printk(KERN_INFO
1117 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1119 cp->serial_number, cp->request_bufflen,
1120 le32_to_cpu(pkt->residual_length)));
1122 cp->result = DID_ERROR << 16;
1125 case CS_PORT_LOGGED_OUT:
1126 case CS_PORT_CONFIG_CHG:
1129 case CS_PORT_UNAVAILABLE:
1131 * If the port is in Target Down state, return all IOs for this
1132 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1135 fcport = sp->fclun->fcport;
1136 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1137 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1138 ha->host_no, t, l, cp->serial_number, comp_status,
1139 atomic_read(&fcport->state)));
1141 if ((sp->flags & (SRB_IOCTL | SRB_TAPE)) ||
1142 atomic_read(&fcport->state) == FCS_DEVICE_DEAD) {
1143 cp->result = DID_NO_CONNECT << 16;
1144 if (atomic_read(&ha->loop_state) == LOOP_DOWN)
1145 sp->err_id = SRB_ERR_LOOP;
1147 sp->err_id = SRB_ERR_PORT;
1148 add_to_done_queue(ha, sp);
1150 qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
1151 add_to_retry_queue(ha, sp);
1154 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1155 qla2x00_mark_device_lost(ha, fcport, 1);
1162 DEBUG2(printk(KERN_INFO
1163 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1164 ha->host_no, comp_status, scsi_status));
1166 if (sp->flags & (SRB_IOCTL | SRB_TAPE)) {
1167 cp->result = DID_RESET << 16;
1169 qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
1170 add_to_retry_queue(ha, sp);
1177 * hv2.19.12 - DID_ABORT does not retry the request if we
1178 * aborted this request then abort otherwise it must be a
1181 DEBUG2(printk(KERN_INFO
1182 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1183 ha->host_no, comp_status, scsi_status));
1185 cp->result = DID_RESET << 16;
1189 DEBUG2(printk(KERN_INFO
1190 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x.\n",
1191 ha->host_no, b, t, l, comp_status, scsi_status));
1193 cp->result = DID_BUS_BUSY << 16;
1195 fcport = lq->fclun->fcport;
1197 /* Check to see if logout occurred */
1198 if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) {
1199 qla2x00_mark_device_lost(ha, fcport, 1);
1204 DEBUG2(printk(KERN_INFO
1205 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1206 ha->host_no, comp_status, scsi_status));
1208 /* SCSI Mid-Layer handles device queue full */
1210 cp->result = DID_OK << 16 | lscsi_status;
1213 /* Adjust queue depth */
1214 ret = scsi_track_queue_full(cp->device,
1215 sp->lun_queue->out_cnt - 1);
1217 qla_printk(KERN_INFO, ha,
1218 "scsi(%ld:%d:%d:%d): Queue depth adjusted to %d.\n",
1219 ha->host_no, cp->device->channel, cp->device->id,
1220 cp->device->lun, ret);
1225 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1227 ha->host_no, comp_status, scsi_status));
1228 qla_printk(KERN_INFO, ha,
1229 "Unknown status detected 0x%x-0x%x.\n",
1230 comp_status, scsi_status);
1232 cp->result = DID_ERROR << 16;
1236 /* Place command on done queue. */
1237 if (ha->status_srb == NULL)
1238 add_to_done_queue(ha, sp);
1242 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1243 * @ha: SCSI driver HA context
1244 * @pkt: Entry pointer
1246 * Extended sense data.
1249 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1251 uint8_t sense_sz = 0;
1252 srb_t *sp = ha->status_srb;
1253 struct scsi_cmnd *cp;
1255 if (sp != NULL && sp->request_sense_length != 0) {
1258 DEBUG2(printk("%s(): Cmd already returned back to OS "
1259 "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1260 qla_printk(KERN_INFO, ha,
1261 "cmd is NULL: already returned to OS (sp=%p)\n",
1264 ha->status_srb = NULL;
1268 if (sp->request_sense_length > sizeof(pkt->data)) {
1269 sense_sz = sizeof(pkt->data);
1271 sense_sz = sp->request_sense_length;
1274 /* Move sense data. */
1275 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1276 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1278 sp->request_sense_ptr += sense_sz;
1279 sp->request_sense_length -= sense_sz;
1281 /* Place command on done queue. */
1282 if (sp->request_sense_length == 0) {
1283 add_to_done_queue(ha, sp);
1284 ha->status_srb = NULL;
1290 * qla2x00_error_entry() - Process an error entry.
1291 * @ha: SCSI driver HA context
1292 * @pkt: Entry pointer
1295 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1299 #if defined(QL_DEBUG_LEVEL_2)
1300 if (pkt->entry_status & RF_INV_E_ORDER)
1301 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1302 else if (pkt->entry_status & RF_INV_E_COUNT)
1303 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1304 else if (pkt->entry_status & RF_INV_E_PARAM)
1305 qla_printk(KERN_ERR, ha,
1306 "%s: Invalid Entry Parameter\n", __func__);
1307 else if (pkt->entry_status & RF_INV_E_TYPE)
1308 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1309 else if (pkt->entry_status & RF_BUSY)
1310 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1312 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1315 /* Validate handle. */
1316 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1317 sp = ha->outstanding_cmds[pkt->handle];
1322 /* Free outstanding command slot. */
1323 ha->outstanding_cmds[pkt->handle] = NULL;
1326 sp->lun_queue->out_cnt--;
1328 /* Bad payload or header */
1329 if (pkt->entry_status &
1330 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1331 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1332 sp->cmd->result = DID_ERROR << 16;
1333 } else if (pkt->entry_status & RF_BUSY) {
1334 sp->cmd->result = DID_BUS_BUSY << 16;
1336 sp->cmd->result = DID_ERROR << 16;
1338 /* Place command on done queue. */
1339 add_to_done_queue(ha, sp);
1341 } else if (pkt->entry_type == COMMAND_A64_TYPE ||
1342 pkt->entry_type == COMMAND_TYPE) {
1343 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1345 qla_printk(KERN_WARNING, ha,
1346 "Error entry - invalid handle\n");
1348 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1349 if (ha->dpc_wait && !ha->dpc_active)
1355 * qla2x00_ms_entry() - Process a Management Server entry.
1356 * @ha: SCSI driver HA context
1357 * @index: Response queue out pointer
1360 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1364 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1365 __func__, ha->host_no, pkt, pkt->handle1));
1367 /* Validate handle. */
1368 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1369 sp = ha->outstanding_cmds[pkt->handle1];
1374 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1376 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1378 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1382 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1383 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1385 /* Free outstanding command slot. */
1386 ha->outstanding_cmds[pkt->handle1] = NULL;
1388 add_to_done_queue(ha, sp);
1392 * qla2x00_check_sense() - Perform any sense data interrogation.
1396 * Returns QLA_SUCCESS if the lun queue is suspended, else
1397 * QLA_FUNCTION_FAILED (lun queue not suspended).
1400 qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *lq)
1402 scsi_qla_host_t *ha;
1406 ha = (scsi_qla_host_t *) cp->device->host->hostdata;
1407 if ((cp->sense_buffer[0] & 0x70) != 0x70) {
1408 return (QLA_FUNCTION_FAILED);
1411 sp = (srb_t * )CMD_SP(cp);
1412 sp->flags |= SRB_GOT_SENSE;
1414 switch (cp->sense_buffer[2] & 0xf) {
1415 case RECOVERED_ERROR:
1416 cp->result = DID_OK << 16;
1417 cp->sense_buffer[0] = 0;
1421 fcport = lq->fclun->fcport;
1424 * Suspend the lun only for hard disk device type.
1426 if ((fcport->flags & FCF_TAPE_PRESENT) == 0 &&
1427 lq->q_state != LUN_STATE_TIMEOUT) {
1429 * If target is in process of being ready then suspend
1430 * lun for 6 secs and retry all the commands.
1432 if (cp->sense_buffer[12] == 0x4 &&
1433 cp->sense_buffer[13] == 0x1) {
1435 /* Suspend the lun for 6 secs */
1436 qla2x00_suspend_lun(ha, lq, 6,
1439 return (QLA_SUCCESS);
1445 return (QLA_FUNCTION_FAILED);