2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2010 QLogic Corporation
5 * See LICENSE.qla2xxx for copyright and licensing details.
10 #include <linux/moduleparam.h>
11 #include <linux/vmalloc.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
15 #include <scsi/scsi_tcq.h>
16 #include <scsi/scsicam.h>
17 #include <linux/delay.h>
20 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
22 if (vha->vp_idx && vha->timer_active) {
23 del_timer_sync(&vha->timer);
24 vha->timer_active = 0;
29 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
32 struct qla_hw_data *ha = vha->hw;
34 /* Find an empty slot and assign an vp_id */
35 mutex_lock(&ha->vport_lock);
36 vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
37 if (vp_id > ha->max_npiv_vports) {
38 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
39 vp_id, ha->max_npiv_vports));
40 mutex_unlock(&ha->vport_lock);
44 set_bit(vp_id, ha->vp_idx_map);
47 list_add_tail(&vha->list, &ha->vp_list);
48 mutex_unlock(&ha->vport_lock);
53 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
56 struct qla_hw_data *ha = vha->hw;
58 mutex_lock(&ha->vport_lock);
61 clear_bit(vp_id, ha->vp_idx_map);
63 mutex_unlock(&ha->vport_lock);
66 static scsi_qla_host_t *
67 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
70 struct scsi_qla_host *tvha;
72 /* Locate matching device in database. */
73 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
74 if (!memcmp(port_name, vha->port_name, WWN_SIZE))
81 * qla2x00_mark_vp_devices_dead
82 * Updates fcport state when device goes offline.
85 * ha = adapter block pointer.
86 * fcport = port structure pointer.
94 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
98 list_for_each_entry(fcport, &vha->vp_fcports, list) {
99 DEBUG15(printk("scsi(%ld): Marking port dead, "
100 "loop_id=0x%04x :%x\n",
101 vha->host_no, fcport->loop_id, fcport->vp_idx));
103 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
104 qla2x00_mark_device_lost(vha, fcport, 0, 0);
105 atomic_set(&fcport->state, FCS_UNCONFIGURED);
110 qla24xx_disable_vp(scsi_qla_host_t *vha)
114 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
115 atomic_set(&vha->loop_state, LOOP_DOWN);
116 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
118 qla2x00_mark_vp_devices_dead(vha);
119 atomic_set(&vha->vp_state, VP_FAILED);
120 vha->flags.management_server_logged_in = 0;
121 if (ret == QLA_SUCCESS) {
122 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
124 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
131 qla24xx_enable_vp(scsi_qla_host_t *vha)
134 struct qla_hw_data *ha = vha->hw;
135 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
137 /* Check if physical ha port is Up */
138 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN ||
139 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
140 !(ha->current_topology & ISP_CFG_F)) {
141 vha->vp_err_state = VP_ERR_PORTDWN;
142 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
146 /* Initialize the new vport unless it is a persistent port */
147 mutex_lock(&ha->vport_lock);
148 ret = qla24xx_modify_vp_config(vha);
149 mutex_unlock(&ha->vport_lock);
151 if (ret != QLA_SUCCESS) {
152 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
156 DEBUG15(qla_printk(KERN_INFO, ha,
157 "Virtual port with id: %d - Enabled\n", vha->vp_idx));
161 DEBUG15(qla_printk(KERN_INFO, ha,
162 "Virtual port with id: %d - Disabled\n", vha->vp_idx));
167 qla24xx_configure_vp(scsi_qla_host_t *vha)
169 struct fc_vport *fc_vport;
172 fc_vport = vha->fc_vport;
174 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
175 vha->host_no, __func__));
176 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
177 if (ret != QLA_SUCCESS) {
178 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
179 "receiving of RSCN requests: 0x%x\n", ret));
182 /* Corresponds to SCR enabled */
183 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
186 vha->flags.online = 1;
187 if (qla24xx_configure_vhba(vha))
190 atomic_set(&vha->vp_state, VP_ACTIVE);
191 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
195 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
197 scsi_qla_host_t *vha, *tvha;
198 struct qla_hw_data *ha = rsp->hw;
201 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
204 case MBA_LIP_OCCURRED:
208 case MBA_POINT_TO_POINT:
209 case MBA_CHG_IN_CONNECTION:
210 case MBA_PORT_UPDATE:
211 case MBA_RSCN_UPDATE:
212 DEBUG15(printk("scsi(%ld)%s: Async_event for"
213 " VP[%d], mb = 0x%x, vha=%p\n",
214 vha->host_no, __func__, i, *mb, vha));
215 qla2x00_async_event(vha, rsp, mb);
224 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
227 * Physical port will do most of the abort and recovery work. We can
228 * just treat it as a loop down
230 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
231 atomic_set(&vha->loop_state, LOOP_DOWN);
232 qla2x00_mark_all_devices_lost(vha, 0);
234 if (!atomic_read(&vha->loop_down_timer))
235 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
239 * To exclusively reset vport, we need to log it out first. Note: this
240 * control_vp can fail if ISP reset is already issued, this is
241 * expected, as the vp would be already logged out due to ISP reset.
243 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
244 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
246 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
247 vha->host_no, vha->vp_idx));
248 return qla24xx_enable_vp(vha);
252 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
254 qla2x00_do_work(vha);
256 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
257 /* VP acquired. complete port configuration */
258 qla24xx_configure_vp(vha);
262 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
263 qla2x00_update_fcports(vha);
264 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
267 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
268 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
269 atomic_read(&vha->loop_state) != LOOP_DOWN) {
271 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
273 qla2x00_relogin(vha);
275 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
279 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
280 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
281 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
284 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
285 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
286 qla2x00_loop_resync(vha);
287 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
295 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
298 struct qla_hw_data *ha = vha->hw;
300 struct scsi_qla_host *tvp;
304 if (list_empty(&ha->vp_list))
307 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
309 if (!(ha->current_topology & ISP_CFG_F))
312 list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
314 ret = qla2x00_do_dpc_vp(vp);
319 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
321 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
322 struct qla_hw_data *ha = base_vha->hw;
323 scsi_qla_host_t *vha;
324 uint8_t port_name[WWN_SIZE];
326 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
327 return VPCERR_UNSUPPORTED;
329 /* Check up the F/W and H/W support NPIV */
330 if (!ha->flags.npiv_supported)
331 return VPCERR_UNSUPPORTED;
333 /* Check up whether npiv supported switch presented */
334 if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
335 return VPCERR_NO_FABRIC_SUPP;
337 /* Check up unique WWPN */
338 u64_to_wwn(fc_vport->port_name, port_name);
339 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
340 return VPCERR_BAD_WWN;
341 vha = qla24xx_find_vhost_by_name(ha, port_name);
343 return VPCERR_BAD_WWN;
345 /* Check up max-npiv-supports */
346 if (ha->num_vhosts > ha->max_npiv_vports) {
347 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
348 "max_npv_vports %ud.\n", base_vha->host_no,
349 ha->num_vhosts, ha->max_npiv_vports));
350 return VPCERR_UNSUPPORTED;
356 qla24xx_create_vhost(struct fc_vport *fc_vport)
358 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
359 struct qla_hw_data *ha = base_vha->hw;
360 scsi_qla_host_t *vha;
361 struct scsi_host_template *sht = &qla2xxx_driver_template;
362 struct Scsi_Host *host;
364 vha = qla2x00_create_host(sht, ha);
366 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
371 fc_vport->dd_data = vha;
373 u64_to_wwn(fc_vport->node_name, vha->node_name);
374 u64_to_wwn(fc_vport->port_name, vha->port_name);
376 vha->fc_vport = fc_vport;
377 vha->device_flags = 0;
378 vha->vp_idx = qla24xx_allocate_vp_id(vha);
379 if (vha->vp_idx > ha->max_npiv_vports) {
380 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
382 goto create_vhost_failed;
384 vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
389 * To fix the issue of processing a parent's RSCN for the vport before
390 * its SCR is complete.
392 set_bit(VP_SCR_NEEDED, &vha->vp_flags);
393 atomic_set(&vha->loop_state, LOOP_DOWN);
394 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
396 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
398 vha->req = base_vha->req;
399 host->can_queue = base_vha->req->length + 128;
401 host->cmd_per_lun = 3;
402 if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
403 host->max_cmd_len = 32;
405 host->max_cmd_len = MAX_CMDSZ;
406 host->max_channel = MAX_BUSES - 1;
407 host->max_lun = MAX_LUNS;
408 host->unique_id = host->host_no;
409 host->max_id = MAX_TARGETS_2200;
410 host->transportt = qla2xxx_transport_vport_template;
412 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
415 vha->flags.init_done = 1;
417 mutex_lock(&ha->vport_lock);
418 set_bit(vha->vp_idx, ha->vp_idx_map);
419 ha->cur_vport_count++;
420 mutex_unlock(&ha->vport_lock);
429 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
431 struct qla_hw_data *ha = vha->hw;
432 uint16_t que_id = req->id;
434 dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
435 sizeof(request_t), req->ring, req->dma);
439 ha->req_q_map[que_id] = NULL;
440 mutex_lock(&ha->vport_lock);
441 clear_bit(que_id, ha->req_qid_map);
442 mutex_unlock(&ha->vport_lock);
449 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
451 struct qla_hw_data *ha = vha->hw;
452 uint16_t que_id = rsp->id;
454 if (rsp->msix && rsp->msix->have_irq) {
455 free_irq(rsp->msix->vector, rsp);
456 rsp->msix->have_irq = 0;
457 rsp->msix->rsp = NULL;
459 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
460 sizeof(response_t), rsp->ring, rsp->dma);
464 ha->rsp_q_map[que_id] = NULL;
465 mutex_lock(&ha->vport_lock);
466 clear_bit(que_id, ha->rsp_qid_map);
467 mutex_unlock(&ha->vport_lock);
474 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
479 req->options |= BIT_0;
480 ret = qla25xx_init_req_que(vha, req);
482 if (ret == QLA_SUCCESS)
483 qla25xx_free_req_que(vha, req);
489 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
494 rsp->options |= BIT_0;
495 ret = qla25xx_init_rsp_que(vha, rsp);
497 if (ret == QLA_SUCCESS)
498 qla25xx_free_rsp_que(vha, rsp);
503 /* Delete all queues for a given vhost */
505 qla25xx_delete_queues(struct scsi_qla_host *vha)
508 struct req_que *req = NULL;
509 struct rsp_que *rsp = NULL;
510 struct qla_hw_data *ha = vha->hw;
512 /* Delete request queues */
513 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
514 req = ha->req_q_map[cnt];
516 ret = qla25xx_delete_req_que(vha, req);
517 if (ret != QLA_SUCCESS) {
518 qla_printk(KERN_WARNING, ha,
519 "Couldn't delete req que %d\n",
526 /* Delete response queues */
527 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
528 rsp = ha->rsp_q_map[cnt];
530 ret = qla25xx_delete_rsp_que(vha, rsp);
531 if (ret != QLA_SUCCESS) {
532 qla_printk(KERN_WARNING, ha,
533 "Couldn't delete rsp que %d\n",
543 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
544 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
547 struct req_que *req = NULL;
548 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
550 device_reg_t __iomem *reg;
553 req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
555 qla_printk(KERN_WARNING, ha, "could not allocate memory"
556 "for request que\n");
560 req->length = REQUEST_ENTRY_CNT_24XX;
561 req->ring = dma_alloc_coherent(&ha->pdev->dev,
562 (req->length + 1) * sizeof(request_t),
563 &req->dma, GFP_KERNEL);
564 if (req->ring == NULL) {
565 qla_printk(KERN_WARNING, ha,
566 "Memory Allocation failed - request_ring\n");
570 mutex_lock(&ha->vport_lock);
571 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
572 if (que_id >= ha->max_req_queues) {
573 mutex_unlock(&ha->vport_lock);
574 qla_printk(KERN_INFO, ha, "No resources to create "
575 "additional request queue\n");
578 set_bit(que_id, ha->req_qid_map);
579 ha->req_q_map[que_id] = req;
581 req->vp_idx = vp_idx;
587 req->rsp = ha->rsp_q_map[rsp_que];
588 /* Use alternate PCI bus number */
591 /* Use alternate PCI devfn */
594 req->options = options;
596 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
597 req->outstanding_cmds[cnt] = NULL;
598 req->current_outstanding_cmd = 1;
600 req->ring_ptr = req->ring;
602 req->cnt = req->length;
604 reg = ISP_QUE_REG(ha, que_id);
605 req->max_q_depth = ha->req_q_map[0]->max_q_depth;
606 mutex_unlock(&ha->vport_lock);
608 ret = qla25xx_init_req_que(base_vha, req);
609 if (ret != QLA_SUCCESS) {
610 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
611 mutex_lock(&ha->vport_lock);
612 clear_bit(que_id, ha->req_qid_map);
613 mutex_unlock(&ha->vport_lock);
620 qla25xx_free_req_que(base_vha, req);
625 static void qla_do_work(struct work_struct *work)
628 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
629 struct scsi_qla_host *vha;
630 struct qla_hw_data *ha = rsp->hw;
632 spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
633 vha = pci_get_drvdata(ha->pdev);
634 qla24xx_process_response_queue(vha, rsp);
635 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
638 /* create response queue */
640 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
641 uint8_t vp_idx, uint16_t rid, int req)
644 struct rsp_que *rsp = NULL;
645 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
647 device_reg_t __iomem *reg;
649 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
651 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
656 rsp->length = RESPONSE_ENTRY_CNT_MQ;
657 rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
658 (rsp->length + 1) * sizeof(response_t),
659 &rsp->dma, GFP_KERNEL);
660 if (rsp->ring == NULL) {
661 qla_printk(KERN_WARNING, ha,
662 "Memory Allocation failed - response_ring\n");
666 mutex_lock(&ha->vport_lock);
667 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
668 if (que_id >= ha->max_rsp_queues) {
669 mutex_unlock(&ha->vport_lock);
670 qla_printk(KERN_INFO, ha, "No resources to create "
671 "additional response queue\n");
674 set_bit(que_id, ha->rsp_qid_map);
676 if (ha->flags.msix_enabled)
677 rsp->msix = &ha->msix_entries[que_id + 1];
679 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
681 ha->rsp_q_map[que_id] = rsp;
683 rsp->vp_idx = vp_idx;
685 /* Use alternate PCI bus number */
688 /* Use alternate PCI devfn */
691 /* Enable MSIX handshake mode on for uncapable adapters */
692 if (!IS_MSIX_NACK_CAPABLE(ha))
695 rsp->options = options;
697 reg = ISP_QUE_REG(ha, que_id);
698 rsp->rsp_q_in = ®->isp25mq.rsp_q_in;
699 rsp->rsp_q_out = ®->isp25mq.rsp_q_out;
700 mutex_unlock(&ha->vport_lock);
702 ret = qla25xx_request_irq(rsp);
706 ret = qla25xx_init_rsp_que(base_vha, rsp);
707 if (ret != QLA_SUCCESS) {
708 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
709 mutex_lock(&ha->vport_lock);
710 clear_bit(que_id, ha->rsp_qid_map);
711 mutex_unlock(&ha->vport_lock);
715 rsp->req = ha->req_q_map[req];
719 qla2x00_init_response_q_entries(rsp);
721 INIT_WORK(&rsp->q_work, qla_do_work);
725 qla25xx_free_rsp_que(base_vha, rsp);