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);
411 ha->flags.management_server_logged_in = 0;
412 qla2x00_post_aen_work(ha, FCH_EVT_LIP, mb[1]);
415 case MBA_LOOP_UP: /* Loop Up Event */
416 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
417 link_speed = link_speeds[0];
418 ha->link_data_rate = PORT_SPEED_1GB;
420 link_speed = link_speeds[LS_UNKNOWN];
422 link_speed = link_speeds[mb[1]];
423 ha->link_data_rate = mb[1];
426 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
427 ha->host_no, link_speed));
428 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
431 ha->flags.management_server_logged_in = 0;
432 qla2x00_post_aen_work(ha, FCH_EVT_LINKUP, ha->link_data_rate);
435 case MBA_LOOP_DOWN: /* Loop Down Event */
436 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
437 "(%x %x %x).\n", ha->host_no, mb[1], mb[2], mb[3]));
438 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
439 mb[1], mb[2], mb[3]);
441 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
442 atomic_set(&ha->loop_state, LOOP_DOWN);
443 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
444 ha->device_flags |= DFLG_NO_CABLE;
445 qla2x00_mark_all_devices_lost(ha, 1);
449 atomic_set(&ha->vp_state, VP_FAILED);
450 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
453 ha->flags.management_server_logged_in = 0;
454 ha->link_data_rate = PORT_SPEED_UNKNOWN;
456 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
457 qla2x00_post_aen_work(ha, FCH_EVT_LINKDOWN, 0);
460 case MBA_LIP_RESET: /* LIP reset occurred */
461 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
462 ha->host_no, mb[1]));
463 qla_printk(KERN_INFO, ha,
464 "LIP reset occured (%x).\n", mb[1]);
466 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
467 atomic_set(&ha->loop_state, LOOP_DOWN);
468 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
469 qla2x00_mark_all_devices_lost(ha, 1);
473 atomic_set(&ha->vp_state, VP_FAILED);
474 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
477 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
479 ha->operating_mode = LOOP;
480 ha->flags.management_server_logged_in = 0;
481 qla2x00_post_aen_work(ha, FCH_EVT_LIPRESET, mb[1]);
484 case MBA_POINT_TO_POINT: /* Point-to-Point */
488 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
492 * Until there's a transition from loop down to loop up, treat
493 * this as loop down only.
495 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
496 atomic_set(&ha->loop_state, LOOP_DOWN);
497 if (!atomic_read(&ha->loop_down_timer))
498 atomic_set(&ha->loop_down_timer,
500 qla2x00_mark_all_devices_lost(ha, 1);
504 atomic_set(&ha->vp_state, VP_FAILED);
505 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
508 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
509 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
511 set_bit(REGISTER_FC4_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 */
546 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
547 * event etc. earlier indicating loop is down) then process
548 * it. Otherwise ignore it and Wait for RSCN to come in.
550 atomic_set(&ha->loop_down_timer, 0);
551 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
552 atomic_read(&ha->loop_state) != LOOP_DEAD) {
553 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
554 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
559 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
561 DEBUG(printk(KERN_INFO
562 "scsi(%ld): Port database changed %04x %04x %04x.\n",
563 ha->host_no, mb[1], mb[2], mb[3]));
566 * Mark all devices as missing so we will login again.
568 atomic_set(&ha->loop_state, LOOP_UP);
570 qla2x00_mark_all_devices_lost(ha, 1);
572 ha->flags.rscn_queue_overflow = 1;
574 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
575 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
578 case MBA_RSCN_UPDATE: /* State Change Registration */
579 /* Check if the Vport has issued a SCR */
580 if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
582 /* Only handle SCNs for our Vport index. */
583 if (ha->flags.npiv_supported && ha->vp_idx != mb[3])
586 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
588 DEBUG(printk(KERN_INFO
589 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
590 ha->host_no, mb[1], mb[2], mb[3]));
592 rscn_entry = (mb[1] << 16) | mb[2];
593 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
595 if (rscn_entry == host_pid) {
596 DEBUG(printk(KERN_INFO
597 "scsi(%ld): Ignoring RSCN update to local host "
599 ha->host_no, host_pid));
603 rscn_queue_index = ha->rscn_in_ptr + 1;
604 if (rscn_queue_index == MAX_RSCN_COUNT)
605 rscn_queue_index = 0;
606 if (rscn_queue_index != ha->rscn_out_ptr) {
607 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
608 ha->rscn_in_ptr = rscn_queue_index;
610 ha->flags.rscn_queue_overflow = 1;
613 atomic_set(&ha->loop_state, LOOP_UPDATE);
614 atomic_set(&ha->loop_down_timer, 0);
615 ha->flags.management_server_logged_in = 0;
617 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
618 set_bit(RSCN_UPDATE, &ha->dpc_flags);
619 qla2x00_post_aen_work(ha, FCH_EVT_RSCN, rscn_entry);
622 /* case MBA_RIO_RESPONSE: */
623 case MBA_ZIO_RESPONSE:
624 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
626 DEBUG(printk(KERN_INFO
627 "scsi(%ld): [R|Z]IO update completion.\n",
630 if (IS_FWI2_CAPABLE(ha))
631 qla24xx_process_response_queue(ha);
633 qla2x00_process_response_queue(ha);
636 case MBA_DISCARD_RND_FRAME:
637 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
638 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
641 case MBA_TRACE_NOTIFICATION:
642 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
643 ha->host_no, mb[1], mb[2]));
646 case MBA_ISP84XX_ALERT:
647 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
648 "%04x %04x %04x\n", ha->host_no, mb[1], mb[2], mb[3]));
650 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
652 case A84_PANIC_RECOVERY:
653 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
654 "%04x %04x\n", mb[2], mb[3]);
656 case A84_OP_LOGIN_COMPLETE:
657 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
658 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
659 "firmware version %x\n", ha->cs84xx->op_fw_version));
661 case A84_DIAG_LOGIN_COMPLETE:
662 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
663 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
664 "diagnostic firmware version %x\n",
665 ha->cs84xx->diag_fw_version));
667 case A84_GOLD_LOGIN_COMPLETE:
668 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
669 ha->cs84xx->fw_update = 1;
670 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
671 "firmware version %x\n",
672 ha->cs84xx->gold_fw_version));
675 qla_printk(KERN_ERR, ha,
676 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
677 mb[1], mb[2], mb[3]);
679 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
683 if (!ha->parent && ha->num_vhosts)
684 qla2x00_alert_all_vps(ha, mb);
688 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
690 fc_port_t *fcport = data;
692 if (fcport->ha->max_q_depth <= sdev->queue_depth)
695 if (sdev->ordered_tags)
696 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
697 sdev->queue_depth + 1);
699 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
700 sdev->queue_depth + 1);
702 fcport->last_ramp_up = jiffies;
704 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
705 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
706 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
711 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
713 fc_port_t *fcport = data;
715 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
718 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
719 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
720 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
725 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp)
728 struct scsi_device *sdev;
730 sdev = sp->cmd->device;
731 if (sdev->queue_depth >= ha->max_q_depth)
735 if (time_before(jiffies,
736 fcport->last_ramp_up + ql2xqfullrampup * HZ))
738 if (time_before(jiffies,
739 fcport->last_queue_full + ql2xqfullrampup * HZ))
742 starget_for_each_device(sdev->sdev_target, fcport,
743 qla2x00_adjust_sdev_qdepth_up);
747 * qla2x00_process_completed_request() - Process a Fast Post response.
748 * @ha: SCSI driver HA context
752 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
756 /* Validate handle. */
757 if (index >= MAX_OUTSTANDING_COMMANDS) {
758 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
759 ha->host_no, index));
760 qla_printk(KERN_WARNING, ha,
761 "Invalid SCSI completion handle %d.\n", index);
763 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
767 sp = ha->outstanding_cmds[index];
769 /* Free outstanding command slot. */
770 ha->outstanding_cmds[index] = NULL;
772 CMD_COMPL_STATUS(sp->cmd) = 0L;
773 CMD_SCSI_STATUS(sp->cmd) = 0L;
775 /* Save ISP completion status */
776 sp->cmd->result = DID_OK << 16;
778 qla2x00_ramp_up_queue_depth(ha, sp);
779 qla2x00_sp_compl(ha, sp);
781 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
783 qla_printk(KERN_WARNING, ha,
784 "Invalid ISP SCSI completion handle\n");
786 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
791 * qla2x00_process_response_queue() - Process response queue entries.
792 * @ha: SCSI driver HA context
795 qla2x00_process_response_queue(struct scsi_qla_host *ha)
797 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
802 if (!ha->flags.online)
805 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
806 pkt = (sts_entry_t *)ha->response_ring_ptr;
808 ha->rsp_ring_index++;
809 if (ha->rsp_ring_index == ha->response_q_length) {
810 ha->rsp_ring_index = 0;
811 ha->response_ring_ptr = ha->response_ring;
813 ha->response_ring_ptr++;
816 if (pkt->entry_status != 0) {
817 DEBUG3(printk(KERN_INFO
818 "scsi(%ld): Process error entry.\n", ha->host_no));
820 qla2x00_error_entry(ha, pkt);
821 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
826 switch (pkt->entry_type) {
828 qla2x00_status_entry(ha, pkt);
831 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
832 for (cnt = 0; cnt < handle_cnt; cnt++) {
833 qla2x00_process_completed_request(ha,
834 ((sts21_entry_t *)pkt)->handle[cnt]);
838 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
839 for (cnt = 0; cnt < handle_cnt; cnt++) {
840 qla2x00_process_completed_request(ha,
841 ((sts22_entry_t *)pkt)->handle[cnt]);
844 case STATUS_CONT_TYPE:
845 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
848 /* Type Not Supported. */
849 DEBUG4(printk(KERN_WARNING
850 "scsi(%ld): Received unknown response pkt type %x "
851 "entry status=%x.\n",
852 ha->host_no, pkt->entry_type, pkt->entry_status));
855 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
859 /* Adjust ring index */
860 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
864 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
866 struct scsi_cmnd *cp = sp->cmd;
868 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
869 sense_len = SCSI_SENSE_BUFFERSIZE;
871 CMD_ACTUAL_SNSLEN(cp) = sense_len;
872 sp->request_sense_length = sense_len;
873 sp->request_sense_ptr = cp->sense_buffer;
874 if (sp->request_sense_length > 32)
877 memcpy(cp->sense_buffer, sense_data, sense_len);
879 sp->request_sense_ptr += sense_len;
880 sp->request_sense_length -= sense_len;
881 if (sp->request_sense_length != 0)
882 sp->ha->status_srb = sp;
884 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
885 "cmd=%p pid=%ld\n", __func__, sp->ha->host_no, cp->device->channel,
886 cp->device->id, cp->device->lun, cp, cp->serial_number));
888 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
889 CMD_ACTUAL_SNSLEN(cp)));
893 * qla2x00_status_entry() - Process a Status IOCB entry.
894 * @ha: SCSI driver HA context
895 * @pkt: Entry pointer
898 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
902 struct scsi_cmnd *cp;
904 struct sts_entry_24xx *sts24;
905 uint16_t comp_status;
906 uint16_t scsi_status;
907 uint8_t lscsi_status;
909 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
910 uint8_t *rsp_info, *sense_data;
912 sts = (sts_entry_t *) pkt;
913 sts24 = (struct sts_entry_24xx *) pkt;
914 if (IS_FWI2_CAPABLE(ha)) {
915 comp_status = le16_to_cpu(sts24->comp_status);
916 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
918 comp_status = le16_to_cpu(sts->comp_status);
919 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
922 /* Fast path completion. */
923 if (comp_status == CS_COMPLETE && scsi_status == 0) {
924 qla2x00_process_completed_request(ha, sts->handle);
929 /* Validate handle. */
930 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
931 sp = ha->outstanding_cmds[sts->handle];
932 ha->outstanding_cmds[sts->handle] = NULL;
937 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
939 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
941 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
942 qla2xxx_wake_dpc(ha);
947 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
948 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
949 qla_printk(KERN_WARNING, ha,
950 "Command is NULL: already returned to OS (sp=%p)\n", sp);
955 lscsi_status = scsi_status & STATUS_MASK;
956 CMD_ENTRY_STATUS(cp) = sts->entry_status;
957 CMD_COMPL_STATUS(cp) = comp_status;
958 CMD_SCSI_STATUS(cp) = scsi_status;
962 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
963 if (IS_FWI2_CAPABLE(ha)) {
964 sense_len = le32_to_cpu(sts24->sense_len);
965 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
966 resid_len = le32_to_cpu(sts24->rsp_residual_count);
967 fw_resid_len = le32_to_cpu(sts24->residual_len);
968 rsp_info = sts24->data;
969 sense_data = sts24->data;
970 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
972 sense_len = le16_to_cpu(sts->req_sense_length);
973 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
974 resid_len = le32_to_cpu(sts->residual_length);
975 rsp_info = sts->rsp_info;
976 sense_data = sts->req_sense_data;
979 /* Check for any FCP transport errors. */
980 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
981 /* Sense data lies beyond any FCP RESPONSE data. */
982 if (IS_FWI2_CAPABLE(ha))
983 sense_data += rsp_info_len;
984 if (rsp_info_len > 3 && rsp_info[3]) {
985 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
986 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
987 "retrying command\n", ha->host_no,
988 cp->device->channel, cp->device->id,
989 cp->device->lun, rsp_info_len, rsp_info[0],
990 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
991 rsp_info[5], rsp_info[6], rsp_info[7]));
993 cp->result = DID_BUS_BUSY << 16;
994 qla2x00_sp_compl(ha, sp);
999 /* Check for overrun. */
1000 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1001 scsi_status & SS_RESIDUAL_OVER)
1002 comp_status = CS_DATA_OVERRUN;
1005 * Based on Host and scsi status generate status code for Linux
1007 switch (comp_status) {
1010 if (scsi_status == 0) {
1011 cp->result = DID_OK << 16;
1014 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1016 scsi_set_resid(cp, resid);
1017 CMD_RESID_LEN(cp) = resid;
1019 if (!lscsi_status &&
1020 ((unsigned)(scsi_bufflen(cp) - resid) <
1022 qla_printk(KERN_INFO, ha,
1023 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1024 "detected (%x of %x bytes)...returning "
1025 "error status.\n", ha->host_no,
1026 cp->device->channel, cp->device->id,
1027 cp->device->lun, resid,
1030 cp->result = DID_ERROR << 16;
1034 cp->result = DID_OK << 16 | lscsi_status;
1036 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1037 DEBUG2(printk(KERN_INFO
1038 "scsi(%ld): QUEUE FULL status detected "
1039 "0x%x-0x%x.\n", ha->host_no, comp_status,
1042 /* Adjust queue depth for all luns on the port. */
1043 fcport->last_queue_full = jiffies;
1044 starget_for_each_device(cp->device->sdev_target,
1045 fcport, qla2x00_adjust_sdev_qdepth_down);
1048 if (lscsi_status != SS_CHECK_CONDITION)
1051 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1052 if (!(scsi_status & SS_SENSE_LEN_VALID))
1055 qla2x00_handle_sense(sp, sense_data, sense_len);
1058 case CS_DATA_UNDERRUN:
1060 /* Use F/W calculated residual length. */
1061 if (IS_FWI2_CAPABLE(ha)) {
1062 if (scsi_status & SS_RESIDUAL_UNDER &&
1063 resid != fw_resid_len) {
1064 scsi_status &= ~SS_RESIDUAL_UNDER;
1067 resid = fw_resid_len;
1070 if (scsi_status & SS_RESIDUAL_UNDER) {
1071 scsi_set_resid(cp, resid);
1072 CMD_RESID_LEN(cp) = resid;
1074 DEBUG2(printk(KERN_INFO
1075 "scsi(%ld:%d:%d) UNDERRUN status detected "
1076 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1077 "os_underflow=0x%x\n", ha->host_no,
1078 cp->device->id, cp->device->lun, comp_status,
1079 scsi_status, resid_len, resid, cp->cmnd[0],
1085 * Check to see if SCSI Status is non zero. If so report SCSI
1088 if (lscsi_status != 0) {
1089 cp->result = DID_OK << 16 | lscsi_status;
1091 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1092 DEBUG2(printk(KERN_INFO
1093 "scsi(%ld): QUEUE FULL status detected "
1094 "0x%x-0x%x.\n", ha->host_no, comp_status,
1098 * Adjust queue depth for all luns on the
1101 fcport->last_queue_full = jiffies;
1102 starget_for_each_device(
1103 cp->device->sdev_target, fcport,
1104 qla2x00_adjust_sdev_qdepth_down);
1107 if (lscsi_status != SS_CHECK_CONDITION)
1110 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1111 if (!(scsi_status & SS_SENSE_LEN_VALID))
1114 qla2x00_handle_sense(sp, sense_data, sense_len);
1117 * In case of a Underrun condition, set both the lscsi
1118 * status and the completion status to appropriate
1122 ((unsigned)(scsi_bufflen(cp) - resid) <
1124 DEBUG2(qla_printk(KERN_INFO, ha,
1125 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1126 "detected (%x of %x bytes)...returning "
1127 "error status.\n", ha->host_no,
1128 cp->device->channel, cp->device->id,
1129 cp->device->lun, resid,
1132 cp->result = DID_ERROR << 16 | lscsi_status;
1136 * If RISC reports underrun and target does not report
1137 * it then we must have a lost frame, so tell upper
1138 * layer to retry it by reporting a bus busy.
1140 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1141 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1142 "frame(s) detected (%x of %x bytes)..."
1143 "retrying command.\n", ha->host_no,
1144 cp->device->channel, cp->device->id,
1145 cp->device->lun, resid,
1148 cp->result = DID_BUS_BUSY << 16;
1152 /* Handle mid-layer underflow */
1153 if ((unsigned)(scsi_bufflen(cp) - resid) <
1155 qla_printk(KERN_INFO, ha,
1156 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1157 "detected (%x of %x bytes)...returning "
1158 "error status.\n", ha->host_no,
1159 cp->device->channel, cp->device->id,
1160 cp->device->lun, resid,
1163 cp->result = DID_ERROR << 16;
1167 /* Everybody online, looking good... */
1168 cp->result = DID_OK << 16;
1172 case CS_DATA_OVERRUN:
1173 DEBUG2(printk(KERN_INFO
1174 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1175 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1177 DEBUG2(printk(KERN_INFO
1178 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1179 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1180 cp->cmnd[4], cp->cmnd[5]));
1181 DEBUG2(printk(KERN_INFO
1182 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1184 cp->serial_number, scsi_bufflen(cp), resid_len));
1186 cp->result = DID_ERROR << 16;
1189 case CS_PORT_LOGGED_OUT:
1190 case CS_PORT_CONFIG_CHG:
1193 case CS_PORT_UNAVAILABLE:
1195 * If the port is in Target Down state, return all IOs for this
1196 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1199 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1200 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1201 ha->host_no, cp->device->id, cp->device->lun,
1202 cp->serial_number, comp_status,
1203 atomic_read(&fcport->state)));
1205 cp->result = DID_BUS_BUSY << 16;
1206 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1207 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1212 DEBUG2(printk(KERN_INFO
1213 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1214 ha->host_no, comp_status, scsi_status));
1216 cp->result = DID_RESET << 16;
1221 * hv2.19.12 - DID_ABORT does not retry the request if we
1222 * aborted this request then abort otherwise it must be a
1225 DEBUG2(printk(KERN_INFO
1226 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1227 ha->host_no, comp_status, scsi_status));
1229 cp->result = DID_RESET << 16;
1233 cp->result = DID_BUS_BUSY << 16;
1235 if (IS_FWI2_CAPABLE(ha)) {
1236 DEBUG2(printk(KERN_INFO
1237 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1238 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1239 cp->device->id, cp->device->lun, comp_status,
1243 DEBUG2(printk(KERN_INFO
1244 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1245 "sflags=%x.\n", ha->host_no, cp->device->channel,
1246 cp->device->id, cp->device->lun, comp_status, scsi_status,
1247 le16_to_cpu(sts->status_flags)));
1249 /* Check to see if logout occurred. */
1250 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1251 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1255 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1256 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1257 qla_printk(KERN_INFO, ha,
1258 "Unknown status detected 0x%x-0x%x.\n",
1259 comp_status, scsi_status);
1261 cp->result = DID_ERROR << 16;
1265 /* Place command on done queue. */
1266 if (ha->status_srb == NULL)
1267 qla2x00_sp_compl(ha, sp);
1271 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1272 * @ha: SCSI driver HA context
1273 * @pkt: Entry pointer
1275 * Extended sense data.
1278 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1280 uint8_t sense_sz = 0;
1281 srb_t *sp = ha->status_srb;
1282 struct scsi_cmnd *cp;
1284 if (sp != NULL && sp->request_sense_length != 0) {
1287 DEBUG2(printk("%s(): Cmd already returned back to OS "
1288 "sp=%p.\n", __func__, sp));
1289 qla_printk(KERN_INFO, ha,
1290 "cmd is NULL: already returned to OS (sp=%p)\n",
1293 ha->status_srb = NULL;
1297 if (sp->request_sense_length > sizeof(pkt->data)) {
1298 sense_sz = sizeof(pkt->data);
1300 sense_sz = sp->request_sense_length;
1303 /* Move sense data. */
1304 if (IS_FWI2_CAPABLE(ha))
1305 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1306 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1307 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1309 sp->request_sense_ptr += sense_sz;
1310 sp->request_sense_length -= sense_sz;
1312 /* Place command on done queue. */
1313 if (sp->request_sense_length == 0) {
1314 ha->status_srb = NULL;
1315 qla2x00_sp_compl(ha, sp);
1321 * qla2x00_error_entry() - Process an error entry.
1322 * @ha: SCSI driver HA context
1323 * @pkt: Entry pointer
1326 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1330 #if defined(QL_DEBUG_LEVEL_2)
1331 if (pkt->entry_status & RF_INV_E_ORDER)
1332 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1333 else if (pkt->entry_status & RF_INV_E_COUNT)
1334 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1335 else if (pkt->entry_status & RF_INV_E_PARAM)
1336 qla_printk(KERN_ERR, ha,
1337 "%s: Invalid Entry Parameter\n", __func__);
1338 else if (pkt->entry_status & RF_INV_E_TYPE)
1339 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1340 else if (pkt->entry_status & RF_BUSY)
1341 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1343 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1346 /* Validate handle. */
1347 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1348 sp = ha->outstanding_cmds[pkt->handle];
1353 /* Free outstanding command slot. */
1354 ha->outstanding_cmds[pkt->handle] = NULL;
1356 /* Bad payload or header */
1357 if (pkt->entry_status &
1358 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1359 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1360 sp->cmd->result = DID_ERROR << 16;
1361 } else if (pkt->entry_status & RF_BUSY) {
1362 sp->cmd->result = DID_BUS_BUSY << 16;
1364 sp->cmd->result = DID_ERROR << 16;
1366 qla2x00_sp_compl(ha, sp);
1368 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1369 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1370 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1372 qla_printk(KERN_WARNING, ha,
1373 "Error entry - invalid handle\n");
1375 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1376 qla2xxx_wake_dpc(ha);
1381 * qla24xx_mbx_completion() - Process mailbox command completions.
1382 * @ha: SCSI driver HA context
1383 * @mb0: Mailbox0 register
1386 qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1389 uint16_t __iomem *wptr;
1390 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1392 /* Load return mailbox registers. */
1393 ha->flags.mbox_int = 1;
1394 ha->mailbox_out[0] = mb0;
1395 wptr = (uint16_t __iomem *)®->mailbox1;
1397 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1398 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1403 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1404 __func__, ha->host_no, ha->mcp->mb[0]));
1406 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1407 __func__, ha->host_no));
1412 * qla24xx_process_response_queue() - Process response queue entries.
1413 * @ha: SCSI driver HA context
1416 qla24xx_process_response_queue(struct scsi_qla_host *ha)
1418 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1419 struct sts_entry_24xx *pkt;
1421 if (!ha->flags.online)
1424 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1425 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1427 ha->rsp_ring_index++;
1428 if (ha->rsp_ring_index == ha->response_q_length) {
1429 ha->rsp_ring_index = 0;
1430 ha->response_ring_ptr = ha->response_ring;
1432 ha->response_ring_ptr++;
1435 if (pkt->entry_status != 0) {
1436 DEBUG3(printk(KERN_INFO
1437 "scsi(%ld): Process error entry.\n", ha->host_no));
1439 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1440 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1445 switch (pkt->entry_type) {
1447 qla2x00_status_entry(ha, pkt);
1449 case STATUS_CONT_TYPE:
1450 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1452 case VP_RPT_ID_IOCB_TYPE:
1453 qla24xx_report_id_acquisition(ha,
1454 (struct vp_rpt_id_entry_24xx *)pkt);
1457 /* Type Not Supported. */
1458 DEBUG4(printk(KERN_WARNING
1459 "scsi(%ld): Received unknown response pkt type %x "
1460 "entry status=%x.\n",
1461 ha->host_no, pkt->entry_type, pkt->entry_status));
1464 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1468 /* Adjust ring index */
1469 WRT_REG_DWORD(®->rsp_q_out, ha->rsp_ring_index);
1473 qla2xxx_check_risc_status(scsi_qla_host_t *ha)
1477 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1479 if (!IS_QLA25XX(ha))
1483 WRT_REG_DWORD(®->iobase_addr, 0x7C00);
1484 RD_REG_DWORD(®->iobase_addr);
1485 WRT_REG_DWORD(®->iobase_window, 0x0001);
1486 for (cnt = 10000; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 &&
1487 rval == QLA_SUCCESS; cnt--) {
1489 WRT_REG_DWORD(®->iobase_window, 0x0001);
1492 rval = QLA_FUNCTION_TIMEOUT;
1494 if (rval == QLA_SUCCESS)
1497 WRT_REG_DWORD(®->iobase_window, 0x0003);
1498 for (cnt = 100; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 &&
1499 rval == QLA_SUCCESS; cnt--) {
1501 WRT_REG_DWORD(®->iobase_window, 0x0003);
1504 rval = QLA_FUNCTION_TIMEOUT;
1506 if (rval != QLA_SUCCESS)
1510 if (RD_REG_DWORD(®->iobase_c8) & BIT_3)
1511 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1514 WRT_REG_DWORD(®->iobase_window, 0x0000);
1515 RD_REG_DWORD(®->iobase_window);
1519 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1521 * @dev_id: SCSI driver HA context
1523 * Called by system whenever the host adapter generates an interrupt.
1525 * Returns handled flag.
1528 qla24xx_intr_handler(int irq, void *dev_id)
1530 scsi_qla_host_t *ha;
1531 struct device_reg_24xx __iomem *reg;
1538 ha = (scsi_qla_host_t *) dev_id;
1541 "%s(): NULL host pointer\n", __func__);
1545 reg = &ha->iobase->isp24;
1548 spin_lock(&ha->hardware_lock);
1549 for (iter = 50; iter--; ) {
1550 stat = RD_REG_DWORD(®->host_status);
1551 if (stat & HSRX_RISC_PAUSED) {
1552 if (pci_channel_offline(ha->pdev))
1555 if (ha->hw_event_pause_errors == 0)
1556 qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR,
1557 0, MSW(stat), LSW(stat));
1558 else if (ha->hw_event_pause_errors < 0xffffffff)
1559 ha->hw_event_pause_errors++;
1561 hccr = RD_REG_DWORD(®->hccr);
1563 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1564 "Dumping firmware!\n", hccr);
1566 qla2xxx_check_risc_status(ha);
1568 ha->isp_ops->fw_dump(ha, 1);
1569 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1571 } else if ((stat & HSRX_RISC_INT) == 0)
1574 switch (stat & 0xff) {
1579 qla24xx_mbx_completion(ha, MSW(stat));
1580 status |= MBX_INTERRUPT;
1585 mb[1] = RD_REG_WORD(®->mailbox1);
1586 mb[2] = RD_REG_WORD(®->mailbox2);
1587 mb[3] = RD_REG_WORD(®->mailbox3);
1588 qla2x00_async_event(ha, mb);
1591 qla24xx_process_response_queue(ha);
1594 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1596 ha->host_no, stat & 0xff));
1599 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
1600 RD_REG_DWORD_RELAXED(®->hccr);
1602 spin_unlock(&ha->hardware_lock);
1604 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1605 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1606 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1607 complete(&ha->mbx_intr_comp);
1614 qla24xx_msix_rsp_q(int irq, void *dev_id)
1616 scsi_qla_host_t *ha;
1617 struct device_reg_24xx __iomem *reg;
1620 reg = &ha->iobase->isp24;
1622 spin_lock(&ha->hardware_lock);
1624 qla24xx_process_response_queue(ha);
1625 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
1627 spin_unlock(&ha->hardware_lock);
1633 qla24xx_msix_default(int irq, void *dev_id)
1635 scsi_qla_host_t *ha;
1636 struct device_reg_24xx __iomem *reg;
1643 reg = &ha->iobase->isp24;
1646 spin_lock(&ha->hardware_lock);
1648 stat = RD_REG_DWORD(®->host_status);
1649 if (stat & HSRX_RISC_PAUSED) {
1650 if (pci_channel_offline(ha->pdev))
1653 if (ha->hw_event_pause_errors == 0)
1654 qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR,
1655 0, MSW(stat), LSW(stat));
1656 else if (ha->hw_event_pause_errors < 0xffffffff)
1657 ha->hw_event_pause_errors++;
1659 hccr = RD_REG_DWORD(®->hccr);
1661 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1662 "Dumping firmware!\n", hccr);
1664 qla2xxx_check_risc_status(ha);
1666 ha->isp_ops->fw_dump(ha, 1);
1667 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1669 } else if ((stat & HSRX_RISC_INT) == 0)
1672 switch (stat & 0xff) {
1677 qla24xx_mbx_completion(ha, MSW(stat));
1678 status |= MBX_INTERRUPT;
1683 mb[1] = RD_REG_WORD(®->mailbox1);
1684 mb[2] = RD_REG_WORD(®->mailbox2);
1685 mb[3] = RD_REG_WORD(®->mailbox3);
1686 qla2x00_async_event(ha, mb);
1689 qla24xx_process_response_queue(ha);
1692 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1694 ha->host_no, stat & 0xff));
1697 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT);
1699 spin_unlock(&ha->hardware_lock);
1701 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1702 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1703 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1704 complete(&ha->mbx_intr_comp);
1710 /* Interrupt handling helpers. */
1712 struct qla_init_msix_entry {
1716 irq_handler_t handler;
1719 static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = {
1720 { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT,
1721 "qla2xxx (default)", qla24xx_msix_default },
1723 { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q,
1724 "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
1728 qla24xx_disable_msix(scsi_qla_host_t *ha)
1731 struct qla_msix_entry *qentry;
1733 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1734 qentry = &ha->msix_entries[imsix_entries[i].index];
1735 if (qentry->have_irq)
1736 free_irq(qentry->msix_vector, ha);
1738 pci_disable_msix(ha->pdev);
1742 qla24xx_enable_msix(scsi_qla_host_t *ha)
1745 struct msix_entry entries[QLA_MSIX_ENTRIES];
1746 struct qla_msix_entry *qentry;
1748 for (i = 0; i < QLA_MSIX_ENTRIES; i++)
1749 entries[i].entry = imsix_entries[i].entry;
1751 ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries));
1753 qla_printk(KERN_WARNING, ha,
1754 "MSI-X: Failed to enable support -- %d/%d\n",
1755 QLA_MSIX_ENTRIES, ret);
1758 ha->flags.msix_enabled = 1;
1760 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1761 qentry = &ha->msix_entries[imsix_entries[i].index];
1762 qentry->msix_vector = entries[i].vector;
1763 qentry->msix_entry = entries[i].entry;
1764 qentry->have_irq = 0;
1765 ret = request_irq(qentry->msix_vector,
1766 imsix_entries[i].handler, 0, imsix_entries[i].name, ha);
1768 qla_printk(KERN_WARNING, ha,
1769 "MSI-X: Unable to register handler -- %x/%d.\n",
1770 imsix_entries[i].index, ret);
1771 qla24xx_disable_msix(ha);
1774 qentry->have_irq = 1;
1782 qla2x00_request_irqs(scsi_qla_host_t *ha)
1785 device_reg_t __iomem *reg = ha->iobase;
1787 /* If possible, enable MSI-X. */
1788 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1791 if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX ||
1792 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1793 DEBUG2(qla_printk(KERN_WARNING, ha,
1794 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1795 ha->chip_revision, ha->fw_attributes));
1800 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
1801 (ha->pdev->subsystem_device == 0x7040 ||
1802 ha->pdev->subsystem_device == 0x7041 ||
1803 ha->pdev->subsystem_device == 0x1705)) {
1804 DEBUG2(qla_printk(KERN_WARNING, ha,
1805 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
1806 ha->pdev->subsystem_vendor,
1807 ha->pdev->subsystem_device));
1812 ret = qla24xx_enable_msix(ha);
1814 DEBUG2(qla_printk(KERN_INFO, ha,
1815 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
1816 ha->fw_attributes));
1817 goto clear_risc_ints;
1819 qla_printk(KERN_WARNING, ha,
1820 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
1823 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1826 ret = pci_enable_msi(ha->pdev);
1828 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
1829 ha->flags.msi_enabled = 1;
1833 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
1834 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1836 qla_printk(KERN_WARNING, ha,
1837 "Failed to reserve interrupt %d already in use.\n",
1841 ha->flags.inta_enabled = 1;
1842 ha->host->irq = ha->pdev->irq;
1845 ha->isp_ops->disable_intrs(ha);
1846 spin_lock_irq(&ha->hardware_lock);
1847 if (IS_FWI2_CAPABLE(ha)) {
1848 WRT_REG_DWORD(®->isp24.hccr, HCCRX_CLR_HOST_INT);
1849 WRT_REG_DWORD(®->isp24.hccr, HCCRX_CLR_RISC_INT);
1851 WRT_REG_WORD(®->isp.semaphore, 0);
1852 WRT_REG_WORD(®->isp.hccr, HCCR_CLR_RISC_INT);
1853 WRT_REG_WORD(®->isp.hccr, HCCR_CLR_HOST_INT);
1855 spin_unlock_irq(&ha->hardware_lock);
1856 ha->isp_ops->enable_intrs(ha);
1863 qla2x00_free_irqs(scsi_qla_host_t *ha)
1866 if (ha->flags.msix_enabled)
1867 qla24xx_disable_msix(ha);
1868 else if (ha->flags.inta_enabled) {
1869 free_irq(ha->host->irq, ha);
1870 pci_disable_msi(ha->pdev);