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tty/serial: atmel_serial: whitespace and braces modifications
[zen-stable.git] / drivers / scsi / qla2xxx / qla_mid.c
blobc706ed370000390f8450256aa2427817800e8430
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2011 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 ql_dbg(ql_dbg_vport, vha, 0xa000,
40 "vp_id %d is bigger than max-supported %d.\n",
41 vp_id, ha->max_npiv_vports);
42 mutex_unlock(&ha->vport_lock);
43 return vp_id;
44 }
45
46 set_bit(vp_id, ha->vp_idx_map);
47 ha->num_vhosts++;
48 vha->vp_idx = vp_id;
49
50 spin_lock_irqsave(&ha->vport_slock, flags);
51 list_add_tail(&vha->list, &ha->vp_list);
52 spin_unlock_irqrestore(&ha->vport_slock, flags);
53
54 mutex_unlock(&ha->vport_lock);
55 return vp_id;
56 }
57
58 void
59 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
60 {
61 uint16_t vp_id;
62 struct qla_hw_data *ha = vha->hw;
63 unsigned long flags = 0;
64
65 mutex_lock(&ha->vport_lock);
66 /*
67 * Wait for all pending activities to finish before removing vport from
68 * the list.
69 * Lock needs to be held for safe removal from the list (it
70 * ensures no active vp_list traversal while the vport is removed
71 * from the queue)
72 */
73 spin_lock_irqsave(&ha->vport_slock, flags);
74 while (atomic_read(&vha->vref_count)) {
75 spin_unlock_irqrestore(&ha->vport_slock, flags);
76
77 msleep(500);
78
79 spin_lock_irqsave(&ha->vport_slock, flags);
80 }
81 list_del(&vha->list);
82 spin_unlock_irqrestore(&ha->vport_slock, flags);
83
84 vp_id = vha->vp_idx;
85 ha->num_vhosts--;
86 clear_bit(vp_id, ha->vp_idx_map);
87
88 mutex_unlock(&ha->vport_lock);
89 }
90
91 static scsi_qla_host_t *
92 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
93 {
94 scsi_qla_host_t *vha;
95 struct scsi_qla_host *tvha;
96 unsigned long flags;
97
98 spin_lock_irqsave(&ha->vport_slock, flags);
99 /* Locate matching device in database. */
100 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
101 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
102 spin_unlock_irqrestore(&ha->vport_slock, flags);
103 return vha;
104 }
105 }
106 spin_unlock_irqrestore(&ha->vport_slock, flags);
107 return NULL;
108 }
109
110 /*
111 * qla2x00_mark_vp_devices_dead
112 * Updates fcport state when device goes offline.
113 *
114 * Input:
115 * ha = adapter block pointer.
116 * fcport = port structure pointer.
117 *
118 * Return:
119 * None.
120 *
121 * Context:
122 */
123 static void
124 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
125 {
126 /*
127 * !!! NOTE !!!
128 * This function, if called in contexts other than vp create, disable
129 * or delete, please make sure this is synchronized with the
130 * delete thread.
131 */
132 fc_port_t *fcport;
133
134 list_for_each_entry(fcport, &vha->vp_fcports, list) {
135 ql_dbg(ql_dbg_vport, vha, 0xa001,
136 "Marking port dead, loop_id=0x%04x : %x.\n",
137 fcport->loop_id, fcport->vp_idx);
138
139 qla2x00_mark_device_lost(vha, fcport, 0, 0);
140 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
141 }
142 }
143
144 int
145 qla24xx_disable_vp(scsi_qla_host_t *vha)
146 {
147 int ret;
148
149 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
150 atomic_set(&vha->loop_state, LOOP_DOWN);
151 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
152
153 qla2x00_mark_vp_devices_dead(vha);
154 atomic_set(&vha->vp_state, VP_FAILED);
155 vha->flags.management_server_logged_in = 0;
156 if (ret == QLA_SUCCESS) {
157 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
158 } else {
159 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
160 return -1;
161 }
162 return 0;
163 }
164
165 int
166 qla24xx_enable_vp(scsi_qla_host_t *vha)
167 {
168 int ret;
169 struct qla_hw_data *ha = vha->hw;
170 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
171
172 /* Check if physical ha port is Up */
173 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN ||
174 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
175 !(ha->current_topology & ISP_CFG_F)) {
176 vha->vp_err_state = VP_ERR_PORTDWN;
177 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
178 goto enable_failed;
179 }
180
181 /* Initialize the new vport unless it is a persistent port */
182 mutex_lock(&ha->vport_lock);
183 ret = qla24xx_modify_vp_config(vha);
184 mutex_unlock(&ha->vport_lock);
185
186 if (ret != QLA_SUCCESS) {
187 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
188 goto enable_failed;
189 }
190
191 ql_dbg(ql_dbg_taskm, vha, 0x801a,
192 "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
193 return 0;
194
195 enable_failed:
196 ql_dbg(ql_dbg_taskm, vha, 0x801b,
197 "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
198 return 1;
199 }
200
201 static void
202 qla24xx_configure_vp(scsi_qla_host_t *vha)
203 {
204 struct fc_vport *fc_vport;
205 int ret;
206
207 fc_vport = vha->fc_vport;
208
209 ql_dbg(ql_dbg_vport, vha, 0xa002,
210 "%s: change request #3.\n", __func__);
211 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
212 if (ret != QLA_SUCCESS) {
213 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
214 "receiving of RSCN requests: 0x%x.\n", ret);
215 return;
216 } else {
217 /* Corresponds to SCR enabled */
218 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
219 }
220
221 vha->flags.online = 1;
222 if (qla24xx_configure_vhba(vha))
223 return;
224
225 atomic_set(&vha->vp_state, VP_ACTIVE);
226 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
227 }
228
229 void
230 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
231 {
232 scsi_qla_host_t *vha;
233 struct qla_hw_data *ha = rsp->hw;
234 int i = 0;
235 unsigned long flags;
236
237 spin_lock_irqsave(&ha->vport_slock, flags);
238 list_for_each_entry(vha, &ha->vp_list, list) {
239 if (vha->vp_idx) {
240 atomic_inc(&vha->vref_count);
241 spin_unlock_irqrestore(&ha->vport_slock, flags);
242
243 switch (mb[0]) {
244 case MBA_LIP_OCCURRED:
245 case MBA_LOOP_UP:
246 case MBA_LOOP_DOWN:
247 case MBA_LIP_RESET:
248 case MBA_POINT_TO_POINT:
249 case MBA_CHG_IN_CONNECTION:
250 case MBA_PORT_UPDATE:
251 case MBA_RSCN_UPDATE:
252 ql_dbg(ql_dbg_async, vha, 0x5024,
253 "Async_event for VP[%d], mb=0x%x vha=%p.\n",
254 i, *mb, vha);
255 qla2x00_async_event(vha, rsp, mb);
256 break;
257 }
258
259 spin_lock_irqsave(&ha->vport_slock, flags);
260 atomic_dec(&vha->vref_count);
261 }
262 i++;
263 }
264 spin_unlock_irqrestore(&ha->vport_slock, flags);
265 }
266
267 int
268 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
269 {
270 /*
271 * Physical port will do most of the abort and recovery work. We can
272 * just treat it as a loop down
273 */
274 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
275 atomic_set(&vha->loop_state, LOOP_DOWN);
276 qla2x00_mark_all_devices_lost(vha, 0);
277 } else {
278 if (!atomic_read(&vha->loop_down_timer))
279 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
280 }
281
282 /*
283 * To exclusively reset vport, we need to log it out first. Note: this
284 * control_vp can fail if ISP reset is already issued, this is
285 * expected, as the vp would be already logged out due to ISP reset.
286 */
287 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
288 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
289
290 ql_dbg(ql_dbg_taskm, vha, 0x801d,
291 "Scheduling enable of Vport %d.\n", vha->vp_idx);
292 return qla24xx_enable_vp(vha);
293 }
294
295 static int
296 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
297 {
298 ql_dbg(ql_dbg_dpc, vha, 0x4012,
299 "Entering %s.\n", __func__);
300 ql_dbg(ql_dbg_dpc, vha, 0x4013,
301 "vp_flags: 0x%lx.\n", vha->vp_flags);
302
303 qla2x00_do_work(vha);
304
305 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
306 /* VP acquired. complete port configuration */
307 ql_dbg(ql_dbg_dpc, vha, 0x4014,
308 "Configure VP scheduled.\n");
309 qla24xx_configure_vp(vha);
310 ql_dbg(ql_dbg_dpc, vha, 0x4015,
311 "Configure VP end.\n");
312 return 0;
313 }
314
315 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
316 ql_dbg(ql_dbg_dpc, vha, 0x4016,
317 "FCPort update scheduled.\n");
318 qla2x00_update_fcports(vha);
319 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
320 ql_dbg(ql_dbg_dpc, vha, 0x4017,
321 "FCPort update end.\n");
322 }
323
324 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
325 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
326 atomic_read(&vha->loop_state) != LOOP_DOWN) {
327
328 ql_dbg(ql_dbg_dpc, vha, 0x4018,
329 "Relogin needed scheduled.\n");
330 qla2x00_relogin(vha);
331 ql_dbg(ql_dbg_dpc, vha, 0x4019,
332 "Relogin needed end.\n");
333 }
334
335 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
336 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
337 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
338 }
339
340 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
341 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
342 ql_dbg(ql_dbg_dpc, vha, 0x401a,
343 "Loop resync scheduled.\n");
344 qla2x00_loop_resync(vha);
345 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
346 ql_dbg(ql_dbg_dpc, vha, 0x401b,
347 "Loop resync end.\n");
348 }
349 }
350
351 ql_dbg(ql_dbg_dpc, vha, 0x401c,
352 "Exiting %s.\n", __func__);
353 return 0;
354 }
355
356 void
357 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
358 {
359 int ret;
360 struct qla_hw_data *ha = vha->hw;
361 scsi_qla_host_t *vp;
362 unsigned long flags = 0;
363
364 if (vha->vp_idx)
365 return;
366 if (list_empty(&ha->vp_list))
367 return;
368
369 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
370
371 if (!(ha->current_topology & ISP_CFG_F))
372 return;
373
374 spin_lock_irqsave(&ha->vport_slock, flags);
375 list_for_each_entry(vp, &ha->vp_list, list) {
376 if (vp->vp_idx) {
377 atomic_inc(&vp->vref_count);
378 spin_unlock_irqrestore(&ha->vport_slock, flags);
379
380 ret = qla2x00_do_dpc_vp(vp);
381
382 spin_lock_irqsave(&ha->vport_slock, flags);
383 atomic_dec(&vp->vref_count);
384 }
385 }
386 spin_unlock_irqrestore(&ha->vport_slock, flags);
387 }
388
389 int
390 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
391 {
392 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
393 struct qla_hw_data *ha = base_vha->hw;
394 scsi_qla_host_t *vha;
395 uint8_t port_name[WWN_SIZE];
396
397 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
398 return VPCERR_UNSUPPORTED;
399
400 /* Check up the F/W and H/W support NPIV */
401 if (!ha->flags.npiv_supported)
402 return VPCERR_UNSUPPORTED;
403
404 /* Check up whether npiv supported switch presented */
405 if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
406 return VPCERR_NO_FABRIC_SUPP;
407
408 /* Check up unique WWPN */
409 u64_to_wwn(fc_vport->port_name, port_name);
410 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
411 return VPCERR_BAD_WWN;
412 vha = qla24xx_find_vhost_by_name(ha, port_name);
413 if (vha)
414 return VPCERR_BAD_WWN;
415
416 /* Check up max-npiv-supports */
417 if (ha->num_vhosts > ha->max_npiv_vports) {
418 ql_dbg(ql_dbg_vport, vha, 0xa004,
419 "num_vhosts %ud is bigger "
420 "than max_npiv_vports %ud.\n",
421 ha->num_vhosts, ha->max_npiv_vports);
422 return VPCERR_UNSUPPORTED;
423 }
424 return 0;
425 }
426
427 scsi_qla_host_t *
428 qla24xx_create_vhost(struct fc_vport *fc_vport)
429 {
430 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
431 struct qla_hw_data *ha = base_vha->hw;
432 scsi_qla_host_t *vha;
433 struct scsi_host_template *sht = &qla2xxx_driver_template;
434 struct Scsi_Host *host;
435
436 vha = qla2x00_create_host(sht, ha);
437 if (!vha) {
438 ql_log(ql_log_warn, vha, 0xa005,
439 "scsi_host_alloc() failed for vport.\n");
440 return(NULL);
441 }
442
443 host = vha->host;
444 fc_vport->dd_data = vha;
445 /* New host info */
446 u64_to_wwn(fc_vport->node_name, vha->node_name);
447 u64_to_wwn(fc_vport->port_name, vha->port_name);
448
449 vha->fc_vport = fc_vport;
450 vha->device_flags = 0;
451 vha->vp_idx = qla24xx_allocate_vp_id(vha);
452 if (vha->vp_idx > ha->max_npiv_vports) {
453 ql_dbg(ql_dbg_vport, vha, 0xa006,
454 "Couldn't allocate vp_id.\n");
455 goto create_vhost_failed;
456 }
457 vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
458
459 vha->dpc_flags = 0L;
460
461 /*
462 * To fix the issue of processing a parent's RSCN for the vport before
463 * its SCR is complete.
464 */
465 set_bit(VP_SCR_NEEDED, &vha->vp_flags);
466 atomic_set(&vha->loop_state, LOOP_DOWN);
467 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
468
469 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
470
471 vha->req = base_vha->req;
472 host->can_queue = base_vha->req->length + 128;
473 host->this_id = 255;
474 host->cmd_per_lun = 3;
475 if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
476 host->max_cmd_len = 32;
477 else
478 host->max_cmd_len = MAX_CMDSZ;
479 host->max_channel = MAX_BUSES - 1;
480 host->max_lun = ql2xmaxlun;
481 host->unique_id = host->host_no;
482 host->max_id = MAX_TARGETS_2200;
483 host->transportt = qla2xxx_transport_vport_template;
484
485 ql_dbg(ql_dbg_vport, vha, 0xa007,
486 "Detect vport hba %ld at address = %p.\n",
487 vha->host_no, vha);
488
489 vha->flags.init_done = 1;
490
491 mutex_lock(&ha->vport_lock);
492 set_bit(vha->vp_idx, ha->vp_idx_map);
493 ha->cur_vport_count++;
494 mutex_unlock(&ha->vport_lock);
495
496 return vha;
497
498 create_vhost_failed:
499 return NULL;
500 }
501
502 static void
503 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
504 {
505 struct qla_hw_data *ha = vha->hw;
506 uint16_t que_id = req->id;
507
508 dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
509 sizeof(request_t), req->ring, req->dma);
510 req->ring = NULL;
511 req->dma = 0;
512 if (que_id) {
513 ha->req_q_map[que_id] = NULL;
514 mutex_lock(&ha->vport_lock);
515 clear_bit(que_id, ha->req_qid_map);
516 mutex_unlock(&ha->vport_lock);
517 }
518 kfree(req);
519 req = NULL;
520 }
521
522 static void
523 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
524 {
525 struct qla_hw_data *ha = vha->hw;
526 uint16_t que_id = rsp->id;
527
528 if (rsp->msix && rsp->msix->have_irq) {
529 free_irq(rsp->msix->vector, rsp);
530 rsp->msix->have_irq = 0;
531 rsp->msix->rsp = NULL;
532 }
533 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
534 sizeof(response_t), rsp->ring, rsp->dma);
535 rsp->ring = NULL;
536 rsp->dma = 0;
537 if (que_id) {
538 ha->rsp_q_map[que_id] = NULL;
539 mutex_lock(&ha->vport_lock);
540 clear_bit(que_id, ha->rsp_qid_map);
541 mutex_unlock(&ha->vport_lock);
542 }
543 kfree(rsp);
544 rsp = NULL;
545 }
546
547 int
548 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
549 {
550 int ret = -1;
551
552 if (req) {
553 req->options |= BIT_0;
554 ret = qla25xx_init_req_que(vha, req);
555 }
556 if (ret == QLA_SUCCESS)
557 qla25xx_free_req_que(vha, req);
558
559 return ret;
560 }
561
562 static int
563 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
564 {
565 int ret = -1;
566
567 if (rsp) {
568 rsp->options |= BIT_0;
569 ret = qla25xx_init_rsp_que(vha, rsp);
570 }
571 if (ret == QLA_SUCCESS)
572 qla25xx_free_rsp_que(vha, rsp);
573
574 return ret;
575 }
576
577 /* Delete all queues for a given vhost */
578 int
579 qla25xx_delete_queues(struct scsi_qla_host *vha)
580 {
581 int cnt, ret = 0;
582 struct req_que *req = NULL;
583 struct rsp_que *rsp = NULL;
584 struct qla_hw_data *ha = vha->hw;
585
586 /* Delete request queues */
587 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
588 req = ha->req_q_map[cnt];
589 if (req) {
590 ret = qla25xx_delete_req_que(vha, req);
591 if (ret != QLA_SUCCESS) {
592 ql_log(ql_log_warn, vha, 0x00ea,
593 "Couldn't delete req que %d.\n",
594 req->id);
595 return ret;
596 }
597 }
598 }
599
600 /* Delete response queues */
601 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
602 rsp = ha->rsp_q_map[cnt];
603 if (rsp) {
604 ret = qla25xx_delete_rsp_que(vha, rsp);
605 if (ret != QLA_SUCCESS) {
606 ql_log(ql_log_warn, vha, 0x00eb,
607 "Couldn't delete rsp que %d.\n",
608 rsp->id);
609 return ret;
610 }
611 }
612 }
613 return ret;
614 }
615
616 int
617 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
618 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
619 {
620 int ret = 0;
621 struct req_que *req = NULL;
622 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
623 uint16_t que_id = 0;
624 device_reg_t __iomem *reg;
625 uint32_t cnt;
626
627 req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
628 if (req == NULL) {
629 ql_log(ql_log_fatal, base_vha, 0x00d9,
630 "Failed to allocate memory for request queue.\n");
631 goto failed;
632 }
633
634 req->length = REQUEST_ENTRY_CNT_24XX;
635 req->ring = dma_alloc_coherent(&ha->pdev->dev,
636 (req->length + 1) * sizeof(request_t),
637 &req->dma, GFP_KERNEL);
638 if (req->ring == NULL) {
639 ql_log(ql_log_fatal, base_vha, 0x00da,
640 "Failed to allocte memory for request_ring.\n");
641 goto que_failed;
642 }
643
644 mutex_lock(&ha->vport_lock);
645 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
646 if (que_id >= ha->max_req_queues) {
647 mutex_unlock(&ha->vport_lock);
648 ql_log(ql_log_warn, base_vha, 0x00db,
649 "No resources to create additional request queue.\n");
650 goto que_failed;
651 }
652 set_bit(que_id, ha->req_qid_map);
653 ha->req_q_map[que_id] = req;
654 req->rid = rid;
655 req->vp_idx = vp_idx;
656 req->qos = qos;
657
658 ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
659 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
660 que_id, req->rid, req->vp_idx, req->qos);
661 ql_dbg(ql_dbg_init, base_vha, 0x00dc,
662 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
663 que_id, req->rid, req->vp_idx, req->qos);
664 if (rsp_que < 0)
665 req->rsp = NULL;
666 else
667 req->rsp = ha->rsp_q_map[rsp_que];
668 /* Use alternate PCI bus number */
669 if (MSB(req->rid))
670 options |= BIT_4;
671 /* Use alternate PCI devfn */
672 if (LSB(req->rid))
673 options |= BIT_5;
674 req->options = options;
675
676 ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
677 "options=0x%x.\n", req->options);
678 ql_dbg(ql_dbg_init, base_vha, 0x00dd,
679 "options=0x%x.\n", req->options);
680 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
681 req->outstanding_cmds[cnt] = NULL;
682 req->current_outstanding_cmd = 1;
683
684 req->ring_ptr = req->ring;
685 req->ring_index = 0;
686 req->cnt = req->length;
687 req->id = que_id;
688 reg = ISP_QUE_REG(ha, que_id);
689 req->max_q_depth = ha->req_q_map[0]->max_q_depth;
690 mutex_unlock(&ha->vport_lock);
691 ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
692 "ring_ptr=%p ring_index=%d, "
693 "cnt=%d id=%d max_q_depth=%d.\n",
694 req->ring_ptr, req->ring_index,
695 req->cnt, req->id, req->max_q_depth);
696 ql_dbg(ql_dbg_init, base_vha, 0x00de,
697 "ring_ptr=%p ring_index=%d, "
698 "cnt=%d id=%d max_q_depth=%d.\n",
699 req->ring_ptr, req->ring_index, req->cnt,
700 req->id, req->max_q_depth);
701
702 ret = qla25xx_init_req_que(base_vha, req);
703 if (ret != QLA_SUCCESS) {
704 ql_log(ql_log_fatal, base_vha, 0x00df,
705 "%s failed.\n", __func__);
706 mutex_lock(&ha->vport_lock);
707 clear_bit(que_id, ha->req_qid_map);
708 mutex_unlock(&ha->vport_lock);
709 goto que_failed;
710 }
711
712 return req->id;
713
714 que_failed:
715 qla25xx_free_req_que(base_vha, req);
716 failed:
717 return 0;
718 }
719
720 static void qla_do_work(struct work_struct *work)
721 {
722 unsigned long flags;
723 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
724 struct scsi_qla_host *vha;
725 struct qla_hw_data *ha = rsp->hw;
726
727 spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
728 vha = pci_get_drvdata(ha->pdev);
729 qla24xx_process_response_queue(vha, rsp);
730 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
731 }
732
733 /* create response queue */
734 int
735 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
736 uint8_t vp_idx, uint16_t rid, int req)
737 {
738 int ret = 0;
739 struct rsp_que *rsp = NULL;
740 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
741 uint16_t que_id = 0;
742 device_reg_t __iomem *reg;
743
744 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
745 if (rsp == NULL) {
746 ql_log(ql_log_warn, base_vha, 0x0066,
747 "Failed to allocate memory for response queue.\n");
748 goto failed;
749 }
750
751 rsp->length = RESPONSE_ENTRY_CNT_MQ;
752 rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
753 (rsp->length + 1) * sizeof(response_t),
754 &rsp->dma, GFP_KERNEL);
755 if (rsp->ring == NULL) {
756 ql_log(ql_log_warn, base_vha, 0x00e1,
757 "Failed to allocate memory for response ring.\n");
758 goto que_failed;
759 }
760
761 mutex_lock(&ha->vport_lock);
762 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
763 if (que_id >= ha->max_rsp_queues) {
764 mutex_unlock(&ha->vport_lock);
765 ql_log(ql_log_warn, base_vha, 0x00e2,
766 "No resources to create additional request queue.\n");
767 goto que_failed;
768 }
769 set_bit(que_id, ha->rsp_qid_map);
770
771 if (ha->flags.msix_enabled)
772 rsp->msix = &ha->msix_entries[que_id + 1];
773 else
774 ql_log(ql_log_warn, base_vha, 0x00e3,
775 "MSIX not enalbled.\n");
776
777 ha->rsp_q_map[que_id] = rsp;
778 rsp->rid = rid;
779 rsp->vp_idx = vp_idx;
780 rsp->hw = ha;
781 ql_dbg(ql_dbg_init, base_vha, 0x00e4,
782 "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
783 que_id, rsp->rid, rsp->vp_idx, rsp->hw);
784 /* Use alternate PCI bus number */
785 if (MSB(rsp->rid))
786 options |= BIT_4;
787 /* Use alternate PCI devfn */
788 if (LSB(rsp->rid))
789 options |= BIT_5;
790 /* Enable MSIX handshake mode on for uncapable adapters */
791 if (!IS_MSIX_NACK_CAPABLE(ha))
792 options |= BIT_6;
793
794 rsp->options = options;
795 rsp->id = que_id;
796 reg = ISP_QUE_REG(ha, que_id);
797 rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
798 rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
799 mutex_unlock(&ha->vport_lock);
800 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
801 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
802 rsp->options, rsp->id, rsp->rsp_q_in,
803 rsp->rsp_q_out);
804 ql_dbg(ql_dbg_init, base_vha, 0x00e5,
805 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
806 rsp->options, rsp->id, rsp->rsp_q_in,
807 rsp->rsp_q_out);
808
809 ret = qla25xx_request_irq(rsp);
810 if (ret)
811 goto que_failed;
812
813 ret = qla25xx_init_rsp_que(base_vha, rsp);
814 if (ret != QLA_SUCCESS) {
815 ql_log(ql_log_fatal, base_vha, 0x00e7,
816 "%s failed.\n", __func__);
817 mutex_lock(&ha->vport_lock);
818 clear_bit(que_id, ha->rsp_qid_map);
819 mutex_unlock(&ha->vport_lock);
820 goto que_failed;
821 }
822 if (req >= 0)
823 rsp->req = ha->req_q_map[req];
824 else
825 rsp->req = NULL;
826
827 qla2x00_init_response_q_entries(rsp);
828 if (rsp->hw->wq)
829 INIT_WORK(&rsp->q_work, qla_do_work);
830 return rsp->id;
831
832 que_failed:
833 qla25xx_free_rsp_que(base_vha, rsp);
834 failed:
835 return 0;
836 }