2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2008 QLogic Corporation
5 * See LICENSE.qla2xxx for copyright and licensing details.
9 #include <linux/delay.h>
10 #include <scsi/scsi_tcq.h>
12 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
13 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
14 static void qla2x00_status_entry(scsi_qla_host_t *, void *);
15 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
16 static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
19 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
21 * @dev_id: SCSI driver HA context
23 * Called by system whenever the host adapter generates an interrupt.
25 * Returns handled flag.
28 qla2100_intr_handler(int irq, void *dev_id)
31 struct device_reg_2xxx __iomem *reg;
37 ha = (scsi_qla_host_t *) dev_id;
40 "%s(): NULL host pointer\n", __func__);
44 reg = &ha->iobase->isp;
47 spin_lock(&ha->hardware_lock);
48 for (iter = 50; iter--; ) {
49 hccr = RD_REG_WORD(®->hccr);
50 if (hccr & HCCR_RISC_PAUSE) {
51 if (pci_channel_offline(ha->pdev))
55 * Issue a "HARD" reset in order for the RISC interrupt
56 * bit to be cleared. Schedule a big hammmer to get
57 * out of the RISC PAUSED state.
59 WRT_REG_WORD(®->hccr, HCCR_RESET_RISC);
60 RD_REG_WORD(®->hccr);
62 ha->isp_ops->fw_dump(ha, 1);
63 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
65 } else if ((RD_REG_WORD(®->istatus) & ISR_RISC_INT) == 0)
68 if (RD_REG_WORD(®->semaphore) & BIT_0) {
69 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
70 RD_REG_WORD(®->hccr);
72 /* Get mailbox data. */
73 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
74 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
75 qla2x00_mbx_completion(ha, mb[0]);
76 status |= MBX_INTERRUPT;
77 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
78 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
79 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
80 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
81 qla2x00_async_event(ha, mb);
84 DEBUG2(printk("scsi(%ld): Unrecognized "
85 "interrupt type (%d).\n",
88 /* Release mailbox registers. */
89 WRT_REG_WORD(®->semaphore, 0);
90 RD_REG_WORD(®->semaphore);
92 qla2x00_process_response_queue(ha);
94 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
95 RD_REG_WORD(®->hccr);
98 spin_unlock(&ha->hardware_lock);
100 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
101 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
102 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
103 complete(&ha->mbx_intr_comp);
106 return (IRQ_HANDLED);
110 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
112 * @dev_id: SCSI driver HA context
114 * Called by system whenever the host adapter generates an interrupt.
116 * Returns handled flag.
119 qla2300_intr_handler(int irq, void *dev_id)
122 struct device_reg_2xxx __iomem *reg;
129 ha = (scsi_qla_host_t *) dev_id;
132 "%s(): NULL host pointer\n", __func__);
136 reg = &ha->iobase->isp;
139 spin_lock(&ha->hardware_lock);
140 for (iter = 50; iter--; ) {
141 stat = RD_REG_DWORD(®->u.isp2300.host_status);
142 if (stat & HSR_RISC_PAUSED) {
143 if (pci_channel_offline(ha->pdev))
146 hccr = RD_REG_WORD(®->hccr);
147 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
148 qla_printk(KERN_INFO, ha, "Parity error -- "
149 "HCCR=%x, Dumping firmware!\n", hccr);
151 qla_printk(KERN_INFO, ha, "RISC paused -- "
152 "HCCR=%x, Dumping firmware!\n", hccr);
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.
159 WRT_REG_WORD(®->hccr, HCCR_RESET_RISC);
160 RD_REG_WORD(®->hccr);
162 ha->isp_ops->fw_dump(ha, 1);
163 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
165 } else if ((stat & HSR_RISC_INT) == 0)
168 switch (stat & 0xff) {
173 qla2x00_mbx_completion(ha, MSW(stat));
174 status |= MBX_INTERRUPT;
176 /* Release mailbox registers. */
177 WRT_REG_WORD(®->semaphore, 0);
181 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
182 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
183 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
184 qla2x00_async_event(ha, mb);
187 qla2x00_process_response_queue(ha);
190 mb[0] = MBA_CMPLT_1_16BIT;
192 qla2x00_async_event(ha, mb);
195 mb[0] = MBA_SCSI_COMPLETION;
197 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
198 qla2x00_async_event(ha, mb);
201 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
203 ha->host_no, stat & 0xff));
206 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
207 RD_REG_WORD_RELAXED(®->hccr);
209 spin_unlock(&ha->hardware_lock);
211 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
212 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
213 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
214 complete(&ha->mbx_intr_comp);
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)
229 uint16_t __iomem *wptr;
230 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
232 /* Load return mailbox registers. */
233 ha->flags.mbox_int = 1;
234 ha->mailbox_out[0] = mb0;
235 wptr = (uint16_t __iomem *)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 __iomem *)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 * @mb: Mailbox registers (0 - 3)
263 qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
266 static char *link_speeds[5] = { "1", "2", "?", "4", "8" };
271 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
272 uint32_t rscn_entry, host_pid;
273 uint8_t rscn_queue_index;
276 /* Setup to process RIO completion. */
279 case MBA_SCSI_COMPLETION:
280 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
283 case MBA_CMPLT_1_16BIT:
286 mb[0] = MBA_SCSI_COMPLETION;
288 case MBA_CMPLT_2_16BIT:
292 mb[0] = MBA_SCSI_COMPLETION;
294 case MBA_CMPLT_3_16BIT:
299 mb[0] = MBA_SCSI_COMPLETION;
301 case MBA_CMPLT_4_16BIT:
305 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
307 mb[0] = MBA_SCSI_COMPLETION;
309 case MBA_CMPLT_5_16BIT:
313 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
314 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
316 mb[0] = MBA_SCSI_COMPLETION;
318 case MBA_CMPLT_2_32BIT:
319 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
320 handles[1] = le32_to_cpu(
321 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
322 RD_MAILBOX_REG(ha, reg, 6));
324 mb[0] = MBA_SCSI_COMPLETION;
331 case MBA_SCSI_COMPLETION: /* Fast Post */
332 if (!ha->flags.online)
335 for (cnt = 0; cnt < handle_cnt; cnt++)
336 qla2x00_process_completed_request(ha, handles[cnt]);
339 case MBA_RESET: /* Reset */
340 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
342 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
345 case MBA_SYSTEM_ERR: /* System Error */
346 qla_printk(KERN_INFO, ha,
347 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
348 mb[1], mb[2], mb[3]);
350 qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]);
351 ha->isp_ops->fw_dump(ha, 1);
353 if (IS_FWI2_CAPABLE(ha)) {
354 if (mb[1] == 0 && mb[2] == 0) {
355 qla_printk(KERN_ERR, ha,
356 "Unrecoverable Hardware Error: adapter "
357 "marked OFFLINE!\n");
358 ha->flags.online = 0;
360 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
361 } else if (mb[1] == 0) {
362 qla_printk(KERN_INFO, ha,
363 "Unrecoverable Hardware Error: adapter marked "
365 ha->flags.online = 0;
367 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
370 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
371 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
373 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
375 qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]);
376 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
379 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
380 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
382 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
384 qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]);
385 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
388 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
389 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
393 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
394 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
396 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
398 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
399 atomic_set(&ha->loop_state, LOOP_DOWN);
400 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
401 qla2x00_mark_all_devices_lost(ha, 1);
405 atomic_set(&ha->vp_state, VP_FAILED);
406 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
409 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
410 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
412 ha->flags.management_server_logged_in = 0;
413 qla2x00_post_aen_work(ha, FCH_EVT_LIP, mb[1]);
416 case MBA_LOOP_UP: /* Loop Up Event */
417 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
418 link_speed = link_speeds[0];
419 ha->link_data_rate = PORT_SPEED_1GB;
421 link_speed = link_speeds[LS_UNKNOWN];
423 link_speed = link_speeds[mb[1]];
424 ha->link_data_rate = mb[1];
427 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
428 ha->host_no, link_speed));
429 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
432 ha->flags.management_server_logged_in = 0;
433 qla2x00_post_aen_work(ha, FCH_EVT_LINKUP, ha->link_data_rate);
436 case MBA_LOOP_DOWN: /* Loop Down Event */
437 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
438 "(%x %x %x).\n", ha->host_no, mb[1], mb[2], mb[3]));
439 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
440 mb[1], mb[2], mb[3]);
442 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
443 atomic_set(&ha->loop_state, LOOP_DOWN);
444 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
445 ha->device_flags |= DFLG_NO_CABLE;
446 qla2x00_mark_all_devices_lost(ha, 1);
450 atomic_set(&ha->vp_state, VP_FAILED);
451 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
454 ha->flags.management_server_logged_in = 0;
455 ha->link_data_rate = PORT_SPEED_UNKNOWN;
456 qla2x00_post_aen_work(ha, FCH_EVT_LINKDOWN, 0);
459 case MBA_LIP_RESET: /* LIP reset occurred */
460 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
461 ha->host_no, mb[1]));
462 qla_printk(KERN_INFO, ha,
463 "LIP reset occured (%x).\n", mb[1]);
465 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
466 atomic_set(&ha->loop_state, LOOP_DOWN);
467 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
468 qla2x00_mark_all_devices_lost(ha, 1);
472 atomic_set(&ha->vp_state, VP_FAILED);
473 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
476 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
478 ha->operating_mode = LOOP;
479 ha->flags.management_server_logged_in = 0;
480 qla2x00_post_aen_work(ha, FCH_EVT_LIPRESET, mb[1]);
483 case MBA_POINT_TO_POINT: /* Point-to-Point */
487 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
491 * Until there's a transition from loop down to loop up, treat
492 * this as loop down only.
494 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
495 atomic_set(&ha->loop_state, LOOP_DOWN);
496 if (!atomic_read(&ha->loop_down_timer))
497 atomic_set(&ha->loop_down_timer,
499 qla2x00_mark_all_devices_lost(ha, 1);
503 atomic_set(&ha->vp_state, VP_FAILED);
504 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
507 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
508 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
510 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
511 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
513 ha->flags.gpsc_supported = 1;
514 ha->flags.management_server_logged_in = 0;
517 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
521 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
524 qla_printk(KERN_INFO, ha,
525 "Configuration change detected: value=%x.\n", mb[1]);
527 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
528 atomic_set(&ha->loop_state, LOOP_DOWN);
529 if (!atomic_read(&ha->loop_down_timer))
530 atomic_set(&ha->loop_down_timer,
532 qla2x00_mark_all_devices_lost(ha, 1);
536 atomic_set(&ha->vp_state, VP_FAILED);
537 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
540 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
541 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
544 case MBA_PORT_UPDATE: /* Port database update */
545 /* Only handle SCNs for our Vport index. */
546 if (ha->parent && ha->vp_idx != (mb[3] & 0xff))
550 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
551 * event etc. earlier indicating loop is down) then process
552 * it. Otherwise ignore it and Wait for RSCN to come in.
554 atomic_set(&ha->loop_down_timer, 0);
555 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
556 atomic_read(&ha->loop_state) != LOOP_DEAD) {
557 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
558 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
563 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
565 DEBUG(printk(KERN_INFO
566 "scsi(%ld): Port database changed %04x %04x %04x.\n",
567 ha->host_no, mb[1], mb[2], mb[3]));
570 * Mark all devices as missing so we will login again.
572 atomic_set(&ha->loop_state, LOOP_UP);
574 qla2x00_mark_all_devices_lost(ha, 1);
576 ha->flags.rscn_queue_overflow = 1;
578 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
579 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
582 case MBA_RSCN_UPDATE: /* State Change Registration */
583 /* Check if the Vport has issued a SCR */
584 if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
586 /* Only handle SCNs for our Vport index. */
587 if (ha->parent && ha->vp_idx != (mb[3] & 0xff))
590 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
592 DEBUG(printk(KERN_INFO
593 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
594 ha->host_no, mb[1], mb[2], mb[3]));
596 rscn_entry = (mb[1] << 16) | mb[2];
597 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
599 if (rscn_entry == host_pid) {
600 DEBUG(printk(KERN_INFO
601 "scsi(%ld): Ignoring RSCN update to local host "
603 ha->host_no, host_pid));
607 rscn_queue_index = ha->rscn_in_ptr + 1;
608 if (rscn_queue_index == MAX_RSCN_COUNT)
609 rscn_queue_index = 0;
610 if (rscn_queue_index != ha->rscn_out_ptr) {
611 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
612 ha->rscn_in_ptr = rscn_queue_index;
614 ha->flags.rscn_queue_overflow = 1;
617 atomic_set(&ha->loop_state, LOOP_UPDATE);
618 atomic_set(&ha->loop_down_timer, 0);
619 ha->flags.management_server_logged_in = 0;
621 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
622 set_bit(RSCN_UPDATE, &ha->dpc_flags);
623 qla2x00_post_aen_work(ha, FCH_EVT_RSCN, rscn_entry);
626 /* case MBA_RIO_RESPONSE: */
627 case MBA_ZIO_RESPONSE:
628 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
630 DEBUG(printk(KERN_INFO
631 "scsi(%ld): [R|Z]IO update completion.\n",
634 if (IS_FWI2_CAPABLE(ha))
635 qla24xx_process_response_queue(ha);
637 qla2x00_process_response_queue(ha);
640 case MBA_DISCARD_RND_FRAME:
641 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
642 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
645 case MBA_TRACE_NOTIFICATION:
646 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
647 ha->host_no, mb[1], mb[2]));
650 case MBA_ISP84XX_ALERT:
651 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
652 "%04x %04x %04x\n", ha->host_no, mb[1], mb[2], mb[3]));
654 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
656 case A84_PANIC_RECOVERY:
657 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
658 "%04x %04x\n", mb[2], mb[3]);
660 case A84_OP_LOGIN_COMPLETE:
661 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
662 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
663 "firmware version %x\n", ha->cs84xx->op_fw_version));
665 case A84_DIAG_LOGIN_COMPLETE:
666 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
667 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
668 "diagnostic firmware version %x\n",
669 ha->cs84xx->diag_fw_version));
671 case A84_GOLD_LOGIN_COMPLETE:
672 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
673 ha->cs84xx->fw_update = 1;
674 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
675 "firmware version %x\n",
676 ha->cs84xx->gold_fw_version));
679 qla_printk(KERN_ERR, ha,
680 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
681 mb[1], mb[2], mb[3]);
683 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
687 if (!ha->parent && ha->num_vhosts)
688 qla2x00_alert_all_vps(ha, mb);
692 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
694 fc_port_t *fcport = data;
696 if (fcport->ha->max_q_depth <= sdev->queue_depth)
699 if (sdev->ordered_tags)
700 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
701 sdev->queue_depth + 1);
703 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
704 sdev->queue_depth + 1);
706 fcport->last_ramp_up = jiffies;
708 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
709 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
710 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
715 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
717 fc_port_t *fcport = data;
719 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
722 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
723 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
724 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
729 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp)
732 struct scsi_device *sdev;
734 sdev = sp->cmd->device;
735 if (sdev->queue_depth >= ha->max_q_depth)
739 if (time_before(jiffies,
740 fcport->last_ramp_up + ql2xqfullrampup * HZ))
742 if (time_before(jiffies,
743 fcport->last_queue_full + ql2xqfullrampup * HZ))
746 starget_for_each_device(sdev->sdev_target, fcport,
747 qla2x00_adjust_sdev_qdepth_up);
751 * qla2x00_process_completed_request() - Process a Fast Post response.
752 * @ha: SCSI driver HA context
756 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
760 /* Validate handle. */
761 if (index >= MAX_OUTSTANDING_COMMANDS) {
762 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
763 ha->host_no, index));
764 qla_printk(KERN_WARNING, ha,
765 "Invalid SCSI completion handle %d.\n", index);
767 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
771 sp = ha->outstanding_cmds[index];
773 /* Free outstanding command slot. */
774 ha->outstanding_cmds[index] = NULL;
776 CMD_COMPL_STATUS(sp->cmd) = 0L;
777 CMD_SCSI_STATUS(sp->cmd) = 0L;
779 /* Save ISP completion status */
780 sp->cmd->result = DID_OK << 16;
782 qla2x00_ramp_up_queue_depth(ha, sp);
783 qla2x00_sp_compl(ha, sp);
785 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
787 qla_printk(KERN_WARNING, ha,
788 "Invalid ISP SCSI completion handle\n");
790 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
795 * qla2x00_process_response_queue() - Process response queue entries.
796 * @ha: SCSI driver HA context
799 qla2x00_process_response_queue(struct scsi_qla_host *ha)
801 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
806 if (!ha->flags.online)
809 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
810 pkt = (sts_entry_t *)ha->response_ring_ptr;
812 ha->rsp_ring_index++;
813 if (ha->rsp_ring_index == ha->response_q_length) {
814 ha->rsp_ring_index = 0;
815 ha->response_ring_ptr = ha->response_ring;
817 ha->response_ring_ptr++;
820 if (pkt->entry_status != 0) {
821 DEBUG3(printk(KERN_INFO
822 "scsi(%ld): Process error entry.\n", ha->host_no));
824 qla2x00_error_entry(ha, pkt);
825 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
830 switch (pkt->entry_type) {
832 qla2x00_status_entry(ha, pkt);
835 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
836 for (cnt = 0; cnt < handle_cnt; cnt++) {
837 qla2x00_process_completed_request(ha,
838 ((sts21_entry_t *)pkt)->handle[cnt]);
842 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
843 for (cnt = 0; cnt < handle_cnt; cnt++) {
844 qla2x00_process_completed_request(ha,
845 ((sts22_entry_t *)pkt)->handle[cnt]);
848 case STATUS_CONT_TYPE:
849 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
852 /* Type Not Supported. */
853 DEBUG4(printk(KERN_WARNING
854 "scsi(%ld): Received unknown response pkt type %x "
855 "entry status=%x.\n",
856 ha->host_no, pkt->entry_type, pkt->entry_status));
859 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
863 /* Adjust ring index */
864 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
868 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
870 struct scsi_cmnd *cp = sp->cmd;
872 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
873 sense_len = SCSI_SENSE_BUFFERSIZE;
875 CMD_ACTUAL_SNSLEN(cp) = sense_len;
876 sp->request_sense_length = sense_len;
877 sp->request_sense_ptr = cp->sense_buffer;
878 if (sp->request_sense_length > 32)
881 memcpy(cp->sense_buffer, sense_data, sense_len);
883 sp->request_sense_ptr += sense_len;
884 sp->request_sense_length -= sense_len;
885 if (sp->request_sense_length != 0)
886 sp->ha->status_srb = sp;
888 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
889 "cmd=%p pid=%ld\n", __func__, sp->ha->host_no, cp->device->channel,
890 cp->device->id, cp->device->lun, cp, cp->serial_number));
892 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
893 CMD_ACTUAL_SNSLEN(cp)));
897 * qla2x00_status_entry() - Process a Status IOCB entry.
898 * @ha: SCSI driver HA context
899 * @pkt: Entry pointer
902 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
906 struct scsi_cmnd *cp;
908 struct sts_entry_24xx *sts24;
909 uint16_t comp_status;
910 uint16_t scsi_status;
911 uint8_t lscsi_status;
913 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
914 uint8_t *rsp_info, *sense_data;
916 sts = (sts_entry_t *) pkt;
917 sts24 = (struct sts_entry_24xx *) pkt;
918 if (IS_FWI2_CAPABLE(ha)) {
919 comp_status = le16_to_cpu(sts24->comp_status);
920 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
922 comp_status = le16_to_cpu(sts->comp_status);
923 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
926 /* Fast path completion. */
927 if (comp_status == CS_COMPLETE && scsi_status == 0) {
928 qla2x00_process_completed_request(ha, sts->handle);
933 /* Validate handle. */
934 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
935 sp = ha->outstanding_cmds[sts->handle];
936 ha->outstanding_cmds[sts->handle] = NULL;
941 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
943 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
945 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
946 qla2xxx_wake_dpc(ha);
951 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
952 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
953 qla_printk(KERN_WARNING, ha,
954 "Command is NULL: already returned to OS (sp=%p)\n", sp);
959 lscsi_status = scsi_status & STATUS_MASK;
960 CMD_ENTRY_STATUS(cp) = sts->entry_status;
961 CMD_COMPL_STATUS(cp) = comp_status;
962 CMD_SCSI_STATUS(cp) = scsi_status;
966 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
967 if (IS_FWI2_CAPABLE(ha)) {
968 sense_len = le32_to_cpu(sts24->sense_len);
969 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
970 resid_len = le32_to_cpu(sts24->rsp_residual_count);
971 fw_resid_len = le32_to_cpu(sts24->residual_len);
972 rsp_info = sts24->data;
973 sense_data = sts24->data;
974 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
976 sense_len = le16_to_cpu(sts->req_sense_length);
977 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
978 resid_len = le32_to_cpu(sts->residual_length);
979 rsp_info = sts->rsp_info;
980 sense_data = sts->req_sense_data;
983 /* Check for any FCP transport errors. */
984 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
985 /* Sense data lies beyond any FCP RESPONSE data. */
986 if (IS_FWI2_CAPABLE(ha))
987 sense_data += rsp_info_len;
988 if (rsp_info_len > 3 && rsp_info[3]) {
989 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
990 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
991 "retrying command\n", ha->host_no,
992 cp->device->channel, cp->device->id,
993 cp->device->lun, rsp_info_len, rsp_info[0],
994 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
995 rsp_info[5], rsp_info[6], rsp_info[7]));
997 cp->result = DID_BUS_BUSY << 16;
998 qla2x00_sp_compl(ha, sp);
1003 /* Check for overrun. */
1004 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1005 scsi_status & SS_RESIDUAL_OVER)
1006 comp_status = CS_DATA_OVERRUN;
1009 * Based on Host and scsi status generate status code for Linux
1011 switch (comp_status) {
1014 if (scsi_status == 0) {
1015 cp->result = DID_OK << 16;
1018 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1020 scsi_set_resid(cp, resid);
1021 CMD_RESID_LEN(cp) = resid;
1023 if (!lscsi_status &&
1024 ((unsigned)(scsi_bufflen(cp) - resid) <
1026 qla_printk(KERN_INFO, ha,
1027 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1028 "detected (%x of %x bytes)...returning "
1029 "error status.\n", ha->host_no,
1030 cp->device->channel, cp->device->id,
1031 cp->device->lun, resid,
1034 cp->result = DID_ERROR << 16;
1038 cp->result = DID_OK << 16 | lscsi_status;
1040 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1041 DEBUG2(printk(KERN_INFO
1042 "scsi(%ld): QUEUE FULL status detected "
1043 "0x%x-0x%x.\n", ha->host_no, comp_status,
1046 /* Adjust queue depth for all luns on the port. */
1047 fcport->last_queue_full = jiffies;
1048 starget_for_each_device(cp->device->sdev_target,
1049 fcport, qla2x00_adjust_sdev_qdepth_down);
1052 if (lscsi_status != SS_CHECK_CONDITION)
1055 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1056 if (!(scsi_status & SS_SENSE_LEN_VALID))
1059 qla2x00_handle_sense(sp, sense_data, sense_len);
1062 case CS_DATA_UNDERRUN:
1064 /* Use F/W calculated residual length. */
1065 if (IS_FWI2_CAPABLE(ha)) {
1066 if (scsi_status & SS_RESIDUAL_UNDER &&
1067 resid != fw_resid_len) {
1068 scsi_status &= ~SS_RESIDUAL_UNDER;
1071 resid = fw_resid_len;
1074 if (scsi_status & SS_RESIDUAL_UNDER) {
1075 scsi_set_resid(cp, resid);
1076 CMD_RESID_LEN(cp) = resid;
1078 DEBUG2(printk(KERN_INFO
1079 "scsi(%ld:%d:%d) UNDERRUN status detected "
1080 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1081 "os_underflow=0x%x\n", ha->host_no,
1082 cp->device->id, cp->device->lun, comp_status,
1083 scsi_status, resid_len, resid, cp->cmnd[0],
1089 * Check to see if SCSI Status is non zero. If so report SCSI
1092 if (lscsi_status != 0) {
1093 cp->result = DID_OK << 16 | lscsi_status;
1095 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1096 DEBUG2(printk(KERN_INFO
1097 "scsi(%ld): QUEUE FULL status detected "
1098 "0x%x-0x%x.\n", ha->host_no, comp_status,
1102 * Adjust queue depth for all luns on the
1105 fcport->last_queue_full = jiffies;
1106 starget_for_each_device(
1107 cp->device->sdev_target, fcport,
1108 qla2x00_adjust_sdev_qdepth_down);
1111 if (lscsi_status != SS_CHECK_CONDITION)
1114 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1115 if (!(scsi_status & SS_SENSE_LEN_VALID))
1118 qla2x00_handle_sense(sp, sense_data, sense_len);
1121 * If RISC reports underrun and target does not report
1122 * it then we must have a lost frame, so tell upper
1123 * layer to retry it by reporting a bus busy.
1125 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1126 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1127 "frame(s) detected (%x of %x bytes)..."
1128 "retrying command.\n", ha->host_no,
1129 cp->device->channel, cp->device->id,
1130 cp->device->lun, resid,
1133 cp->result = DID_BUS_BUSY << 16;
1137 /* Handle mid-layer underflow */
1138 if ((unsigned)(scsi_bufflen(cp) - resid) <
1140 qla_printk(KERN_INFO, ha,
1141 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1142 "detected (%x of %x bytes)...returning "
1143 "error status.\n", ha->host_no,
1144 cp->device->channel, cp->device->id,
1145 cp->device->lun, resid,
1148 cp->result = DID_ERROR << 16;
1152 /* Everybody online, looking good... */
1153 cp->result = DID_OK << 16;
1157 case CS_DATA_OVERRUN:
1158 DEBUG2(printk(KERN_INFO
1159 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1160 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1162 DEBUG2(printk(KERN_INFO
1163 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1164 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1165 cp->cmnd[4], cp->cmnd[5]));
1166 DEBUG2(printk(KERN_INFO
1167 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1169 cp->serial_number, scsi_bufflen(cp), resid_len));
1171 cp->result = DID_ERROR << 16;
1174 case CS_PORT_LOGGED_OUT:
1175 case CS_PORT_CONFIG_CHG:
1178 case CS_PORT_UNAVAILABLE:
1180 * If the port is in Target Down state, return all IOs for this
1181 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1184 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1185 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1186 ha->host_no, cp->device->id, cp->device->lun,
1187 cp->serial_number, comp_status,
1188 atomic_read(&fcport->state)));
1190 cp->result = DID_BUS_BUSY << 16;
1191 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1192 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1197 DEBUG2(printk(KERN_INFO
1198 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1199 ha->host_no, comp_status, scsi_status));
1201 cp->result = DID_RESET << 16;
1206 * hv2.19.12 - DID_ABORT does not retry the request if we
1207 * aborted this request then abort otherwise it must be a
1210 DEBUG2(printk(KERN_INFO
1211 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1212 ha->host_no, comp_status, scsi_status));
1214 cp->result = DID_RESET << 16;
1218 cp->result = DID_BUS_BUSY << 16;
1220 if (IS_FWI2_CAPABLE(ha)) {
1221 DEBUG2(printk(KERN_INFO
1222 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1223 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1224 cp->device->id, cp->device->lun, comp_status,
1228 DEBUG2(printk(KERN_INFO
1229 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1230 "sflags=%x.\n", ha->host_no, cp->device->channel,
1231 cp->device->id, cp->device->lun, comp_status, scsi_status,
1232 le16_to_cpu(sts->status_flags)));
1234 /* Check to see if logout occurred. */
1235 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1236 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1240 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1241 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1242 qla_printk(KERN_INFO, ha,
1243 "Unknown status detected 0x%x-0x%x.\n",
1244 comp_status, scsi_status);
1246 cp->result = DID_ERROR << 16;
1250 /* Place command on done queue. */
1251 if (ha->status_srb == NULL)
1252 qla2x00_sp_compl(ha, sp);
1256 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1257 * @ha: SCSI driver HA context
1258 * @pkt: Entry pointer
1260 * Extended sense data.
1263 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1265 uint8_t sense_sz = 0;
1266 srb_t *sp = ha->status_srb;
1267 struct scsi_cmnd *cp;
1269 if (sp != NULL && sp->request_sense_length != 0) {
1272 DEBUG2(printk("%s(): Cmd already returned back to OS "
1273 "sp=%p.\n", __func__, sp));
1274 qla_printk(KERN_INFO, ha,
1275 "cmd is NULL: already returned to OS (sp=%p)\n",
1278 ha->status_srb = NULL;
1282 if (sp->request_sense_length > sizeof(pkt->data)) {
1283 sense_sz = sizeof(pkt->data);
1285 sense_sz = sp->request_sense_length;
1288 /* Move sense data. */
1289 if (IS_FWI2_CAPABLE(ha))
1290 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1291 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1292 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1294 sp->request_sense_ptr += sense_sz;
1295 sp->request_sense_length -= sense_sz;
1297 /* Place command on done queue. */
1298 if (sp->request_sense_length == 0) {
1299 ha->status_srb = NULL;
1300 qla2x00_sp_compl(ha, sp);
1306 * qla2x00_error_entry() - Process an error entry.
1307 * @ha: SCSI driver HA context
1308 * @pkt: Entry pointer
1311 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1315 #if defined(QL_DEBUG_LEVEL_2)
1316 if (pkt->entry_status & RF_INV_E_ORDER)
1317 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1318 else if (pkt->entry_status & RF_INV_E_COUNT)
1319 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1320 else if (pkt->entry_status & RF_INV_E_PARAM)
1321 qla_printk(KERN_ERR, ha,
1322 "%s: Invalid Entry Parameter\n", __func__);
1323 else if (pkt->entry_status & RF_INV_E_TYPE)
1324 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1325 else if (pkt->entry_status & RF_BUSY)
1326 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1328 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1331 /* Validate handle. */
1332 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1333 sp = ha->outstanding_cmds[pkt->handle];
1338 /* Free outstanding command slot. */
1339 ha->outstanding_cmds[pkt->handle] = NULL;
1341 /* Bad payload or header */
1342 if (pkt->entry_status &
1343 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1344 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1345 sp->cmd->result = DID_ERROR << 16;
1346 } else if (pkt->entry_status & RF_BUSY) {
1347 sp->cmd->result = DID_BUS_BUSY << 16;
1349 sp->cmd->result = DID_ERROR << 16;
1351 qla2x00_sp_compl(ha, sp);
1353 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1354 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1355 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1357 qla_printk(KERN_WARNING, ha,
1358 "Error entry - invalid handle\n");
1360 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1361 qla2xxx_wake_dpc(ha);
1366 * qla24xx_mbx_completion() - Process mailbox command completions.
1367 * @ha: SCSI driver HA context
1368 * @mb0: Mailbox0 register
1371 qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1374 uint16_t __iomem *wptr;
1375 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1377 /* Load return mailbox registers. */
1378 ha->flags.mbox_int = 1;
1379 ha->mailbox_out[0] = mb0;
1380 wptr = (uint16_t __iomem *)®->mailbox1;
1382 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1383 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1388 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1389 __func__, ha->host_no, ha->mcp->mb[0]));
1391 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1392 __func__, ha->host_no));
1397 * qla24xx_process_response_queue() - Process response queue entries.
1398 * @ha: SCSI driver HA context
1401 qla24xx_process_response_queue(struct scsi_qla_host *ha)
1403 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1404 struct sts_entry_24xx *pkt;
1406 if (!ha->flags.online)
1409 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1410 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1412 ha->rsp_ring_index++;
1413 if (ha->rsp_ring_index == ha->response_q_length) {
1414 ha->rsp_ring_index = 0;
1415 ha->response_ring_ptr = ha->response_ring;
1417 ha->response_ring_ptr++;
1420 if (pkt->entry_status != 0) {
1421 DEBUG3(printk(KERN_INFO
1422 "scsi(%ld): Process error entry.\n", ha->host_no));
1424 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1425 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1430 switch (pkt->entry_type) {
1432 qla2x00_status_entry(ha, pkt);
1434 case STATUS_CONT_TYPE:
1435 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1437 case VP_RPT_ID_IOCB_TYPE:
1438 qla24xx_report_id_acquisition(ha,
1439 (struct vp_rpt_id_entry_24xx *)pkt);
1442 /* Type Not Supported. */
1443 DEBUG4(printk(KERN_WARNING
1444 "scsi(%ld): Received unknown response pkt type %x "
1445 "entry status=%x.\n",
1446 ha->host_no, pkt->entry_type, pkt->entry_status));
1449 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1453 /* Adjust ring index */
1454 WRT_REG_DWORD(®->rsp_q_out, ha->rsp_ring_index);
1458 qla2xxx_check_risc_status(scsi_qla_host_t *ha)
1462 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1464 if (!IS_QLA25XX(ha))
1468 WRT_REG_DWORD(®->iobase_addr, 0x7C00);
1469 RD_REG_DWORD(®->iobase_addr);
1470 WRT_REG_DWORD(®->iobase_window, 0x0001);
1471 for (cnt = 10000; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 &&
1472 rval == QLA_SUCCESS; cnt--) {
1474 WRT_REG_DWORD(®->iobase_window, 0x0001);
1477 rval = QLA_FUNCTION_TIMEOUT;
1479 if (rval == QLA_SUCCESS)
1482 WRT_REG_DWORD(®->iobase_window, 0x0003);
1483 for (cnt = 100; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 &&
1484 rval == QLA_SUCCESS; cnt--) {
1486 WRT_REG_DWORD(®->iobase_window, 0x0003);
1489 rval = QLA_FUNCTION_TIMEOUT;
1491 if (rval != QLA_SUCCESS)
1495 if (RD_REG_DWORD(®->iobase_c8) & BIT_3)
1496 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1499 WRT_REG_DWORD(®->iobase_window, 0x0000);
1500 RD_REG_DWORD(®->iobase_window);
1504 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1506 * @dev_id: SCSI driver HA context
1508 * Called by system whenever the host adapter generates an interrupt.
1510 * Returns handled flag.
1513 qla24xx_intr_handler(int irq, void *dev_id)
1515 scsi_qla_host_t *ha;
1516 struct device_reg_24xx __iomem *reg;
1523 ha = (scsi_qla_host_t *) dev_id;
1526 "%s(): NULL host pointer\n", __func__);
1530 reg = &ha->iobase->isp24;
1533 spin_lock(&ha->hardware_lock);
1534 for (iter = 50; iter--; ) {
1535 stat = RD_REG_DWORD(®->host_status);
1536 if (stat & HSRX_RISC_PAUSED) {
1537 if (pci_channel_offline(ha->pdev))
1540 if (ha->hw_event_pause_errors == 0)
1541 qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR,
1542 0, MSW(stat), LSW(stat));
1543 else if (ha->hw_event_pause_errors < 0xffffffff)
1544 ha->hw_event_pause_errors++;
1546 hccr = RD_REG_DWORD(®->hccr);
1548 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1549 "Dumping firmware!\n", hccr);
1551 qla2xxx_check_risc_status(ha);
1553 ha->isp_ops->fw_dump(ha, 1);
1554 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1556 } else if ((stat & HSRX_RISC_INT) == 0)
1559 switch (stat & 0xff) {
1564 qla24xx_mbx_completion(ha, MSW(stat));
1565 status |= MBX_INTERRUPT;
1570 mb[1] = RD_REG_WORD(®->mailbox1);
1571 mb[2] = RD_REG_WORD(®->mailbox2);
1572 mb[3] = RD_REG_WORD(®->mailbox3);
1573 qla2x00_async_event(ha, mb);
1576 qla24xx_process_response_queue(ha);
1579 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1581 ha->host_no, stat & 0xff));
1584 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
1585 RD_REG_DWORD_RELAXED(®->hccr);
1587 spin_unlock(&ha->hardware_lock);
1589 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1590 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1591 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1592 complete(&ha->mbx_intr_comp);
1599 qla24xx_msix_rsp_q(int irq, void *dev_id)
1601 scsi_qla_host_t *ha;
1602 struct device_reg_24xx __iomem *reg;
1605 reg = &ha->iobase->isp24;
1607 spin_lock_irq(&ha->hardware_lock);
1609 qla24xx_process_response_queue(ha);
1610 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
1612 spin_unlock_irq(&ha->hardware_lock);
1618 qla24xx_msix_default(int irq, void *dev_id)
1620 scsi_qla_host_t *ha;
1621 struct device_reg_24xx __iomem *reg;
1628 reg = &ha->iobase->isp24;
1631 spin_lock_irq(&ha->hardware_lock);
1633 stat = RD_REG_DWORD(®->host_status);
1634 if (stat & HSRX_RISC_PAUSED) {
1635 if (pci_channel_offline(ha->pdev))
1638 if (ha->hw_event_pause_errors == 0)
1639 qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR,
1640 0, MSW(stat), LSW(stat));
1641 else if (ha->hw_event_pause_errors < 0xffffffff)
1642 ha->hw_event_pause_errors++;
1644 hccr = RD_REG_DWORD(®->hccr);
1646 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1647 "Dumping firmware!\n", hccr);
1649 qla2xxx_check_risc_status(ha);
1651 ha->isp_ops->fw_dump(ha, 1);
1652 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1654 } else if ((stat & HSRX_RISC_INT) == 0)
1657 switch (stat & 0xff) {
1662 qla24xx_mbx_completion(ha, MSW(stat));
1663 status |= MBX_INTERRUPT;
1668 mb[1] = RD_REG_WORD(®->mailbox1);
1669 mb[2] = RD_REG_WORD(®->mailbox2);
1670 mb[3] = RD_REG_WORD(®->mailbox3);
1671 qla2x00_async_event(ha, mb);
1674 qla24xx_process_response_queue(ha);
1677 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1679 ha->host_no, stat & 0xff));
1682 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
1684 spin_unlock_irq(&ha->hardware_lock);
1686 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1687 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1688 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1689 complete(&ha->mbx_intr_comp);
1695 /* Interrupt handling helpers. */
1697 struct qla_init_msix_entry {
1701 irq_handler_t handler;
1704 static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = {
1705 { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT,
1706 "qla2xxx (default)", qla24xx_msix_default },
1708 { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q,
1709 "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
1713 qla24xx_disable_msix(scsi_qla_host_t *ha)
1716 struct qla_msix_entry *qentry;
1718 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1719 qentry = &ha->msix_entries[imsix_entries[i].index];
1720 if (qentry->have_irq)
1721 free_irq(qentry->msix_vector, ha);
1723 pci_disable_msix(ha->pdev);
1727 qla24xx_enable_msix(scsi_qla_host_t *ha)
1730 struct msix_entry entries[QLA_MSIX_ENTRIES];
1731 struct qla_msix_entry *qentry;
1733 for (i = 0; i < QLA_MSIX_ENTRIES; i++)
1734 entries[i].entry = imsix_entries[i].entry;
1736 ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries));
1738 qla_printk(KERN_WARNING, ha,
1739 "MSI-X: Failed to enable support -- %d/%d\n",
1740 QLA_MSIX_ENTRIES, ret);
1743 ha->flags.msix_enabled = 1;
1745 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1746 qentry = &ha->msix_entries[imsix_entries[i].index];
1747 qentry->msix_vector = entries[i].vector;
1748 qentry->msix_entry = entries[i].entry;
1749 qentry->have_irq = 0;
1750 ret = request_irq(qentry->msix_vector,
1751 imsix_entries[i].handler, 0, imsix_entries[i].name, ha);
1753 qla_printk(KERN_WARNING, ha,
1754 "MSI-X: Unable to register handler -- %x/%d.\n",
1755 imsix_entries[i].index, ret);
1756 qla24xx_disable_msix(ha);
1759 qentry->have_irq = 1;
1767 qla2x00_request_irqs(scsi_qla_host_t *ha)
1770 device_reg_t __iomem *reg = ha->iobase;
1772 /* If possible, enable MSI-X. */
1773 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1776 if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX ||
1777 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1778 DEBUG2(qla_printk(KERN_WARNING, ha,
1779 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1780 ha->chip_revision, ha->fw_attributes));
1785 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
1786 (ha->pdev->subsystem_device == 0x7040 ||
1787 ha->pdev->subsystem_device == 0x7041 ||
1788 ha->pdev->subsystem_device == 0x1705)) {
1789 DEBUG2(qla_printk(KERN_WARNING, ha,
1790 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
1791 ha->pdev->subsystem_vendor,
1792 ha->pdev->subsystem_device));
1797 ret = qla24xx_enable_msix(ha);
1799 DEBUG2(qla_printk(KERN_INFO, ha,
1800 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
1801 ha->fw_attributes));
1802 goto clear_risc_ints;
1804 qla_printk(KERN_WARNING, ha,
1805 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
1808 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1811 ret = pci_enable_msi(ha->pdev);
1813 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
1814 ha->flags.msi_enabled = 1;
1818 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
1819 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1821 qla_printk(KERN_WARNING, ha,
1822 "Failed to reserve interrupt %d already in use.\n",
1826 ha->flags.inta_enabled = 1;
1827 ha->host->irq = ha->pdev->irq;
1830 ha->isp_ops->disable_intrs(ha);
1831 spin_lock_irq(&ha->hardware_lock);
1832 if (IS_FWI2_CAPABLE(ha)) {
1833 WRT_REG_DWORD(®->isp24.hccr, HCCRX_CLR_HOST_INT);
1834 WRT_REG_DWORD(®->isp24.hccr, HCCRX_CLR_RISC_INT);
1836 WRT_REG_WORD(®->isp.semaphore, 0);
1837 WRT_REG_WORD(®->isp.hccr, HCCR_CLR_RISC_INT);
1838 WRT_REG_WORD(®->isp.hccr, HCCR_CLR_HOST_INT);
1840 spin_unlock_irq(&ha->hardware_lock);
1841 ha->isp_ops->enable_intrs(ha);
1848 qla2x00_free_irqs(scsi_qla_host_t *ha)
1851 if (ha->flags.msix_enabled)
1852 qla24xx_disable_msix(ha);
1853 else if (ha->flags.inta_enabled) {
1854 free_irq(ha->host->irq, ha);
1855 pci_disable_msi(ha->pdev);