?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
USB: Add EHCI and OHCH glue for OCTEON II SOCs.
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / qla_mid.c
blob2b69392a71a1fac76b50ab389a0c3e1054dce59f
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2010 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8 #include "qla_gbl.h"
9
10 #include <linux/moduleparam.h>
11 #include <linux/vmalloc.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14
15 #include <scsi/scsi_tcq.h>
16 #include <scsi/scsicam.h>
17 #include <linux/delay.h>
18
19 void
20 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
21 {
22 if (vha->vp_idx && vha->timer_active) {
23 del_timer_sync(&vha->timer);
24 vha->timer_active = 0;
25 }
26 }
27
28 static uint32_t
29 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
30 {
31 uint32_t vp_id;
32 struct qla_hw_data *ha = vha->hw;
33 unsigned long flags;
34
35 /* Find an empty slot and assign an vp_id */
36 mutex_lock(&ha->vport_lock);
37 vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
38 if (vp_id > ha->max_npiv_vports) {
39 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
40 vp_id, ha->max_npiv_vports));
41 mutex_unlock(&ha->vport_lock);
42 return vp_id;
43 }
44
45 set_bit(vp_id, ha->vp_idx_map);
46 ha->num_vhosts++;
47 vha->vp_idx = vp_id;
48
49 spin_lock_irqsave(&ha->vport_slock, flags);
50 list_add_tail(&vha->list, &ha->vp_list);
51 spin_unlock_irqrestore(&ha->vport_slock, flags);
52
53 mutex_unlock(&ha->vport_lock);
54 return vp_id;
55 }
56
57 void
58 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
59 {
60 uint16_t vp_id;
61 struct qla_hw_data *ha = vha->hw;
62 unsigned long flags = 0;
63
64 mutex_lock(&ha->vport_lock);
65 /*
66 * Wait for all pending activities to finish before removing vport from
67 * the list.
68 * Lock needs to be held for safe removal from the list (it
69 * ensures no active vp_list traversal while the vport is removed
70 * from the queue)
71 */
72 spin_lock_irqsave(&ha->vport_slock, flags);
73 while (atomic_read(&vha->vref_count)) {
74 spin_unlock_irqrestore(&ha->vport_slock, flags);
75
76 msleep(500);
77
78 spin_lock_irqsave(&ha->vport_slock, flags);
79 }
80 list_del(&vha->list);
81 spin_unlock_irqrestore(&ha->vport_slock, flags);
82
83 vp_id = vha->vp_idx;
84 ha->num_vhosts--;
85 clear_bit(vp_id, ha->vp_idx_map);
86
87 mutex_unlock(&ha->vport_lock);
88 }
89
90 static scsi_qla_host_t *
91 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
92 {
93 scsi_qla_host_t *vha;
94 struct scsi_qla_host *tvha;
95 unsigned long flags;
96
97 spin_lock_irqsave(&ha->vport_slock, flags);
98 /* Locate matching device in database. */
99 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
100 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
101 spin_unlock_irqrestore(&ha->vport_slock, flags);
102 return vha;
103 }
104 }
105 spin_unlock_irqrestore(&ha->vport_slock, flags);
106 return NULL;
107 }
108
109 /*
110 * qla2x00_mark_vp_devices_dead
111 * Updates fcport state when device goes offline.
112 *
113 * Input:
114 * ha = adapter block pointer.
115 * fcport = port structure pointer.
116 *
117 * Return:
118 * None.
119 *
120 * Context:
121 */
122 static void
123 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
124 {
125 /*
126 * !!! NOTE !!!
127 * This function, if called in contexts other than vp create, disable
128 * or delete, please make sure this is synchronized with the
129 * delete thread.
130 */
131 fc_port_t *fcport;
132
133 list_for_each_entry(fcport, &vha->vp_fcports, list) {
134 DEBUG15(printk("scsi(%ld): Marking port dead, "
135 "loop_id=0x%04x :%x\n",
136 vha->host_no, fcport->loop_id, fcport->vp_idx));
137
138 qla2x00_mark_device_lost(vha, fcport, 0, 0);
139 atomic_set(&fcport->state, FCS_UNCONFIGURED);
140 }
141 }
142
143 int
144 qla24xx_disable_vp(scsi_qla_host_t *vha)
145 {
146 int ret;
147
148 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
149 atomic_set(&vha->loop_state, LOOP_DOWN);
150 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
151
152 qla2x00_mark_vp_devices_dead(vha);
153 atomic_set(&vha->vp_state, VP_FAILED);
154 vha->flags.management_server_logged_in = 0;
155 if (ret == QLA_SUCCESS) {
156 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
157 } else {
158 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
159 return -1;
160 }
161 return 0;
162 }
163
164 int
165 qla24xx_enable_vp(scsi_qla_host_t *vha)
166 {
167 int ret;
168 struct qla_hw_data *ha = vha->hw;
169 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
170
171 /* Check if physical ha port is Up */
172 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN ||
173 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
174 !(ha->current_topology & ISP_CFG_F)) {
175 vha->vp_err_state = VP_ERR_PORTDWN;
176 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
177 goto enable_failed;
178 }
179
180 /* Initialize the new vport unless it is a persistent port */
181 mutex_lock(&ha->vport_lock);
182 ret = qla24xx_modify_vp_config(vha);
183 mutex_unlock(&ha->vport_lock);
184
185 if (ret != QLA_SUCCESS) {
186 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
187 goto enable_failed;
188 }
189
190 DEBUG15(qla_printk(KERN_INFO, ha,
191 "Virtual port with id: %d - Enabled\n", vha->vp_idx));
192 return 0;
193
194 enable_failed:
195 DEBUG15(qla_printk(KERN_INFO, ha,
196 "Virtual port with id: %d - Disabled\n", vha->vp_idx));
197 return 1;
198 }
199
200 static void
201 qla24xx_configure_vp(scsi_qla_host_t *vha)
202 {
203 struct fc_vport *fc_vport;
204 int ret;
205
206 fc_vport = vha->fc_vport;
207
208 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
209 vha->host_no, __func__));
210 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
211 if (ret != QLA_SUCCESS) {
212 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
213 "receiving of RSCN requests: 0x%x\n", ret));
214 return;
215 } else {
216 /* Corresponds to SCR enabled */
217 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
218 }
219
220 vha->flags.online = 1;
221 if (qla24xx_configure_vhba(vha))
222 return;
223
224 atomic_set(&vha->vp_state, VP_ACTIVE);
225 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
226 }
227
228 void
229 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
230 {
231 scsi_qla_host_t *vha;
232 struct qla_hw_data *ha = rsp->hw;
233 int i = 0;
234 unsigned long flags;
235
236 spin_lock_irqsave(&ha->vport_slock, flags);
237 list_for_each_entry(vha, &ha->vp_list, list) {
238 if (vha->vp_idx) {
239 atomic_inc(&vha->vref_count);
240 spin_unlock_irqrestore(&ha->vport_slock, flags);
241
242 switch (mb[0]) {
243 case MBA_LIP_OCCURRED:
244 case MBA_LOOP_UP:
245 case MBA_LOOP_DOWN:
246 case MBA_LIP_RESET:
247 case MBA_POINT_TO_POINT:
248 case MBA_CHG_IN_CONNECTION:
249 case MBA_PORT_UPDATE:
250 case MBA_RSCN_UPDATE:
251 DEBUG15(printk("scsi(%ld)%s: Async_event for"
252 " VP[%d], mb = 0x%x, vha=%p\n",
253 vha->host_no, __func__, i, *mb, vha));
254 qla2x00_async_event(vha, rsp, mb);
255 break;
256 }
257
258 spin_lock_irqsave(&ha->vport_slock, flags);
259 atomic_dec(&vha->vref_count);
260 }
261 i++;
262 }
263 spin_unlock_irqrestore(&ha->vport_slock, flags);
264 }
265
266 int
267 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
268 {
269 /*
270 * Physical port will do most of the abort and recovery work. We can
271 * just treat it as a loop down
272 */
273 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
274 atomic_set(&vha->loop_state, LOOP_DOWN);
275 qla2x00_mark_all_devices_lost(vha, 0);
276 } else {
277 if (!atomic_read(&vha->loop_down_timer))
278 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
279 }
280
281 /*
282 * To exclusively reset vport, we need to log it out first. Note: this
283 * control_vp can fail if ISP reset is already issued, this is
284 * expected, as the vp would be already logged out due to ISP reset.
285 */
286 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
287 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
288
289 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
290 vha->host_no, vha->vp_idx));
291 return qla24xx_enable_vp(vha);
292 }
293
294 static int
295 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
296 {
297 qla2x00_do_work(vha);
298
299 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
300 /* VP acquired. complete port configuration */
301 qla24xx_configure_vp(vha);
302 return 0;
303 }
304
305 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
306 qla2x00_update_fcports(vha);
307 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
308 }
309
310 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
311 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
312 atomic_read(&vha->loop_state) != LOOP_DOWN) {
313
314 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
315 vha->host_no));
316 qla2x00_relogin(vha);
317
318 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
319 vha->host_no));
320 }
321
322 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
323 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
324 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
325 }
326
327 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
328 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
329 qla2x00_loop_resync(vha);
330 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
331 }
332 }
333
334 return 0;
335 }
336
337 void
338 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
339 {
340 int ret;
341 struct qla_hw_data *ha = vha->hw;
342 scsi_qla_host_t *vp;
343 unsigned long flags = 0;
344
345 if (vha->vp_idx)
346 return;
347 if (list_empty(&ha->vp_list))
348 return;
349
350 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
351
352 if (!(ha->current_topology & ISP_CFG_F))
353 return;
354
355 spin_lock_irqsave(&ha->vport_slock, flags);
356 list_for_each_entry(vp, &ha->vp_list, list) {
357 if (vp->vp_idx) {
358 atomic_inc(&vp->vref_count);
359 spin_unlock_irqrestore(&ha->vport_slock, flags);
360
361 ret = qla2x00_do_dpc_vp(vp);
362
363 spin_lock_irqsave(&ha->vport_slock, flags);
364 atomic_dec(&vp->vref_count);
365 }
366 }
367 spin_unlock_irqrestore(&ha->vport_slock, flags);
368 }
369
370 int
371 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
372 {
373 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
374 struct qla_hw_data *ha = base_vha->hw;
375 scsi_qla_host_t *vha;
376 uint8_t port_name[WWN_SIZE];
377
378 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
379 return VPCERR_UNSUPPORTED;
380
381 /* Check up the F/W and H/W support NPIV */
382 if (!ha->flags.npiv_supported)
383 return VPCERR_UNSUPPORTED;
384
385 /* Check up whether npiv supported switch presented */
386 if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
387 return VPCERR_NO_FABRIC_SUPP;
388
389 /* Check up unique WWPN */
390 u64_to_wwn(fc_vport->port_name, port_name);
391 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
392 return VPCERR_BAD_WWN;
393 vha = qla24xx_find_vhost_by_name(ha, port_name);
394 if (vha)
395 return VPCERR_BAD_WWN;
396
397 /* Check up max-npiv-supports */
398 if (ha->num_vhosts > ha->max_npiv_vports) {
399 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
400 "max_npv_vports %ud.\n", base_vha->host_no,
401 ha->num_vhosts, ha->max_npiv_vports));
402 return VPCERR_UNSUPPORTED;
403 }
404 return 0;
405 }
406
407 scsi_qla_host_t *
408 qla24xx_create_vhost(struct fc_vport *fc_vport)
409 {
410 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
411 struct qla_hw_data *ha = base_vha->hw;
412 scsi_qla_host_t *vha;
413 struct scsi_host_template *sht = &qla2xxx_driver_template;
414 struct Scsi_Host *host;
415
416 vha = qla2x00_create_host(sht, ha);
417 if (!vha) {
418 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
419 return(NULL);
420 }
421
422 host = vha->host;
423 fc_vport->dd_data = vha;
424 /* New host info */
425 u64_to_wwn(fc_vport->node_name, vha->node_name);
426 u64_to_wwn(fc_vport->port_name, vha->port_name);
427
428 vha->fc_vport = fc_vport;
429 vha->device_flags = 0;
430 vha->vp_idx = qla24xx_allocate_vp_id(vha);
431 if (vha->vp_idx > ha->max_npiv_vports) {
432 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
433 vha->host_no));
434 goto create_vhost_failed;
435 }
436 vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
437
438 vha->dpc_flags = 0L;
439
440 /*
441 * To fix the issue of processing a parent's RSCN for the vport before
442 * its SCR is complete.
443 */
444 set_bit(VP_SCR_NEEDED, &vha->vp_flags);
445 atomic_set(&vha->loop_state, LOOP_DOWN);
446 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
447
448 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
449
450 vha->req = base_vha->req;
451 host->can_queue = base_vha->req->length + 128;
452 host->this_id = 255;
453 host->cmd_per_lun = 3;
454 if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
455 host->max_cmd_len = 32;
456 else
457 host->max_cmd_len = MAX_CMDSZ;
458 host->max_channel = MAX_BUSES - 1;
459 host->max_lun = MAX_LUNS;
460 host->unique_id = host->host_no;
461 host->max_id = MAX_TARGETS_2200;
462 host->transportt = qla2xxx_transport_vport_template;
463
464 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
465 vha->host_no, vha));
466
467 vha->flags.init_done = 1;
468
469 mutex_lock(&ha->vport_lock);
470 set_bit(vha->vp_idx, ha->vp_idx_map);
471 ha->cur_vport_count++;
472 mutex_unlock(&ha->vport_lock);
473
474 return vha;
475
476 create_vhost_failed:
477 return NULL;
478 }
479
480 static void
481 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
482 {
483 struct qla_hw_data *ha = vha->hw;
484 uint16_t que_id = req->id;
485
486 dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
487 sizeof(request_t), req->ring, req->dma);
488 req->ring = NULL;
489 req->dma = 0;
490 if (que_id) {
491 ha->req_q_map[que_id] = NULL;
492 mutex_lock(&ha->vport_lock);
493 clear_bit(que_id, ha->req_qid_map);
494 mutex_unlock(&ha->vport_lock);
495 }
496 kfree(req);
497 req = NULL;
498 }
499
500 static void
501 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
502 {
503 struct qla_hw_data *ha = vha->hw;
504 uint16_t que_id = rsp->id;
505
506 if (rsp->msix && rsp->msix->have_irq) {
507 free_irq(rsp->msix->vector, rsp);
508 rsp->msix->have_irq = 0;
509 rsp->msix->rsp = NULL;
510 }
511 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
512 sizeof(response_t), rsp->ring, rsp->dma);
513 rsp->ring = NULL;
514 rsp->dma = 0;
515 if (que_id) {
516 ha->rsp_q_map[que_id] = NULL;
517 mutex_lock(&ha->vport_lock);
518 clear_bit(que_id, ha->rsp_qid_map);
519 mutex_unlock(&ha->vport_lock);
520 }
521 kfree(rsp);
522 rsp = NULL;
523 }
524
525 int
526 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
527 {
528 int ret = -1;
529
530 if (req) {
531 req->options |= BIT_0;
532 ret = qla25xx_init_req_que(vha, req);
533 }
534 if (ret == QLA_SUCCESS)
535 qla25xx_free_req_que(vha, req);
536
537 return ret;
538 }
539
540 static int
541 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
542 {
543 int ret = -1;
544
545 if (rsp) {
546 rsp->options |= BIT_0;
547 ret = qla25xx_init_rsp_que(vha, rsp);
548 }
549 if (ret == QLA_SUCCESS)
550 qla25xx_free_rsp_que(vha, rsp);
551
552 return ret;
553 }
554
555 /* Delete all queues for a given vhost */
556 int
557 qla25xx_delete_queues(struct scsi_qla_host *vha)
558 {
559 int cnt, ret = 0;
560 struct req_que *req = NULL;
561 struct rsp_que *rsp = NULL;
562 struct qla_hw_data *ha = vha->hw;
563
564 /* Delete request queues */
565 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
566 req = ha->req_q_map[cnt];
567 if (req) {
568 ret = qla25xx_delete_req_que(vha, req);
569 if (ret != QLA_SUCCESS) {
570 qla_printk(KERN_WARNING, ha,
571 "Couldn't delete req que %d\n",
572 req->id);
573 return ret;
574 }
575 }
576 }
577
578 /* Delete response queues */
579 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
580 rsp = ha->rsp_q_map[cnt];
581 if (rsp) {
582 ret = qla25xx_delete_rsp_que(vha, rsp);
583 if (ret != QLA_SUCCESS) {
584 qla_printk(KERN_WARNING, ha,
585 "Couldn't delete rsp que %d\n",
586 rsp->id);
587 return ret;
588 }
589 }
590 }
591 return ret;
592 }
593
594 int
595 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
596 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
597 {
598 int ret = 0;
599 struct req_que *req = NULL;
600 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
601 uint16_t que_id = 0;
602 device_reg_t __iomem *reg;
603 uint32_t cnt;
604
605 req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
606 if (req == NULL) {
607 qla_printk(KERN_WARNING, ha, "could not allocate memory"
608 "for request que\n");
609 goto failed;
610 }
611
612 req->length = REQUEST_ENTRY_CNT_24XX;
613 req->ring = dma_alloc_coherent(&ha->pdev->dev,
614 (req->length + 1) * sizeof(request_t),
615 &req->dma, GFP_KERNEL);
616 if (req->ring == NULL) {
617 qla_printk(KERN_WARNING, ha,
618 "Memory Allocation failed - request_ring\n");
619 goto que_failed;
620 }
621
622 mutex_lock(&ha->vport_lock);
623 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
624 if (que_id >= ha->max_req_queues) {
625 mutex_unlock(&ha->vport_lock);
626 qla_printk(KERN_INFO, ha, "No resources to create "
627 "additional request queue\n");
628 goto que_failed;
629 }
630 set_bit(que_id, ha->req_qid_map);
631 ha->req_q_map[que_id] = req;
632 req->rid = rid;
633 req->vp_idx = vp_idx;
634 req->qos = qos;
635
636 if (rsp_que < 0)
637 req->rsp = NULL;
638 else
639 req->rsp = ha->rsp_q_map[rsp_que];
640 /* Use alternate PCI bus number */
641 if (MSB(req->rid))
642 options |= BIT_4;
643 /* Use alternate PCI devfn */
644 if (LSB(req->rid))
645 options |= BIT_5;
646 req->options = options;
647
648 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
649 req->outstanding_cmds[cnt] = NULL;
650 req->current_outstanding_cmd = 1;
651
652 req->ring_ptr = req->ring;
653 req->ring_index = 0;
654 req->cnt = req->length;
655 req->id = que_id;
656 reg = ISP_QUE_REG(ha, que_id);
657 req->max_q_depth = ha->req_q_map[0]->max_q_depth;
658 mutex_unlock(&ha->vport_lock);
659
660 ret = qla25xx_init_req_que(base_vha, req);
661 if (ret != QLA_SUCCESS) {
662 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
663 mutex_lock(&ha->vport_lock);
664 clear_bit(que_id, ha->req_qid_map);
665 mutex_unlock(&ha->vport_lock);
666 goto que_failed;
667 }
668
669 return req->id;
670
671 que_failed:
672 qla25xx_free_req_que(base_vha, req);
673 failed:
674 return 0;
675 }
676
677 static void qla_do_work(struct work_struct *work)
678 {
679 unsigned long flags;
680 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
681 struct scsi_qla_host *vha;
682 struct qla_hw_data *ha = rsp->hw;
683
684 spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
685 vha = pci_get_drvdata(ha->pdev);
686 qla24xx_process_response_queue(vha, rsp);
687 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
688 }
689
690 /* create response queue */
691 int
692 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
693 uint8_t vp_idx, uint16_t rid, int req)
694 {
695 int ret = 0;
696 struct rsp_que *rsp = NULL;
697 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
698 uint16_t que_id = 0;
699 device_reg_t __iomem *reg;
700
701 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
702 if (rsp == NULL) {
703 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
704 " response que\n");
705 goto failed;
706 }
707
708 rsp->length = RESPONSE_ENTRY_CNT_MQ;
709 rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
710 (rsp->length + 1) * sizeof(response_t),
711 &rsp->dma, GFP_KERNEL);
712 if (rsp->ring == NULL) {
713 qla_printk(KERN_WARNING, ha,
714 "Memory Allocation failed - response_ring\n");
715 goto que_failed;
716 }
717
718 mutex_lock(&ha->vport_lock);
719 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
720 if (que_id >= ha->max_rsp_queues) {
721 mutex_unlock(&ha->vport_lock);
722 qla_printk(KERN_INFO, ha, "No resources to create "
723 "additional response queue\n");
724 goto que_failed;
725 }
726 set_bit(que_id, ha->rsp_qid_map);
727
728 if (ha->flags.msix_enabled)
729 rsp->msix = &ha->msix_entries[que_id + 1];
730 else
731 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
732
733 ha->rsp_q_map[que_id] = rsp;
734 rsp->rid = rid;
735 rsp->vp_idx = vp_idx;
736 rsp->hw = ha;
737 /* Use alternate PCI bus number */
738 if (MSB(rsp->rid))
739 options |= BIT_4;
740 /* Use alternate PCI devfn */
741 if (LSB(rsp->rid))
742 options |= BIT_5;
743 /* Enable MSIX handshake mode on for uncapable adapters */
744 if (!IS_MSIX_NACK_CAPABLE(ha))
745 options |= BIT_6;
746
747 rsp->options = options;
748 rsp->id = que_id;
749 reg = ISP_QUE_REG(ha, que_id);
750 rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
751 rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
752 mutex_unlock(&ha->vport_lock);
753
754 ret = qla25xx_request_irq(rsp);
755 if (ret)
756 goto que_failed;
757
758 ret = qla25xx_init_rsp_que(base_vha, rsp);
759 if (ret != QLA_SUCCESS) {
760 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
761 mutex_lock(&ha->vport_lock);
762 clear_bit(que_id, ha->rsp_qid_map);
763 mutex_unlock(&ha->vport_lock);
764 goto que_failed;
765 }
766 if (req >= 0)
767 rsp->req = ha->req_q_map[req];
768 else
769 rsp->req = NULL;
770
771 qla2x00_init_response_q_entries(rsp);
772 if (rsp->hw->wq)
773 INIT_WORK(&rsp->q_work, qla_do_work);
774 return rsp->id;
775
776 que_failed:
777 qla25xx_free_rsp_que(base_vha, rsp);
778 failed:
779 return 0;
780 }
Linux with added FPC-III support