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Merge branch 'cpuinit_phase2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg...
[linux-2.6.git] / drivers / scsi / qla2xxx / qla_mid.c
blobf868a9f98afe68a4c5dfc5bff467609436de158b
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2013 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8 #include "qla_gbl.h"
9 #include "qla_target.h"
10
11 #include <linux/moduleparam.h>
12 #include <linux/vmalloc.h>
13 #include <linux/slab.h>
14 #include <linux/list.h>
15
16 #include <scsi/scsi_tcq.h>
17 #include <scsi/scsicam.h>
18 #include <linux/delay.h>
19
20 void
21 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
22 {
23 if (vha->vp_idx && vha->timer_active) {
24 del_timer_sync(&vha->timer);
25 vha->timer_active = 0;
26 }
27 }
28
29 static uint32_t
30 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
31 {
32 uint32_t vp_id;
33 struct qla_hw_data *ha = vha->hw;
34 unsigned long flags;
35
36 /* Find an empty slot and assign an vp_id */
37 mutex_lock(&ha->vport_lock);
38 vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
39 if (vp_id > ha->max_npiv_vports) {
40 ql_dbg(ql_dbg_vport, vha, 0xa000,
41 "vp_id %d is bigger than max-supported %d.\n",
42 vp_id, ha->max_npiv_vports);
43 mutex_unlock(&ha->vport_lock);
44 return vp_id;
45 }
46
47 set_bit(vp_id, ha->vp_idx_map);
48 ha->num_vhosts++;
49 vha->vp_idx = vp_id;
50
51 spin_lock_irqsave(&ha->vport_slock, flags);
52 list_add_tail(&vha->list, &ha->vp_list);
53
54 qlt_update_vp_map(vha, SET_VP_IDX);
55
56 spin_unlock_irqrestore(&ha->vport_slock, flags);
57
58 mutex_unlock(&ha->vport_lock);
59 return vp_id;
60 }
61
62 void
63 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
64 {
65 uint16_t vp_id;
66 struct qla_hw_data *ha = vha->hw;
67 unsigned long flags = 0;
68
69 mutex_lock(&ha->vport_lock);
70 /*
71 * Wait for all pending activities to finish before removing vport from
72 * the list.
73 * Lock needs to be held for safe removal from the list (it
74 * ensures no active vp_list traversal while the vport is removed
75 * from the queue)
76 */
77 spin_lock_irqsave(&ha->vport_slock, flags);
78 while (atomic_read(&vha->vref_count)) {
79 spin_unlock_irqrestore(&ha->vport_slock, flags);
80
81 msleep(500);
82
83 spin_lock_irqsave(&ha->vport_slock, flags);
84 }
85 list_del(&vha->list);
86 qlt_update_vp_map(vha, RESET_VP_IDX);
87 spin_unlock_irqrestore(&ha->vport_slock, flags);
88
89 vp_id = vha->vp_idx;
90 ha->num_vhosts--;
91 clear_bit(vp_id, ha->vp_idx_map);
92
93 mutex_unlock(&ha->vport_lock);
94 }
95
96 static scsi_qla_host_t *
97 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
98 {
99 scsi_qla_host_t *vha;
100 struct scsi_qla_host *tvha;
101 unsigned long flags;
102
103 spin_lock_irqsave(&ha->vport_slock, flags);
104 /* Locate matching device in database. */
105 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
106 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
107 spin_unlock_irqrestore(&ha->vport_slock, flags);
108 return vha;
109 }
110 }
111 spin_unlock_irqrestore(&ha->vport_slock, flags);
112 return NULL;
113 }
114
115 /*
116 * qla2x00_mark_vp_devices_dead
117 * Updates fcport state when device goes offline.
118 *
119 * Input:
120 * ha = adapter block pointer.
121 * fcport = port structure pointer.
122 *
123 * Return:
124 * None.
125 *
126 * Context:
127 */
128 static void
129 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
130 {
131 /*
132 * !!! NOTE !!!
133 * This function, if called in contexts other than vp create, disable
134 * or delete, please make sure this is synchronized with the
135 * delete thread.
136 */
137 fc_port_t *fcport;
138
139 list_for_each_entry(fcport, &vha->vp_fcports, list) {
140 ql_dbg(ql_dbg_vport, vha, 0xa001,
141 "Marking port dead, loop_id=0x%04x : %x.\n",
142 fcport->loop_id, fcport->vha->vp_idx);
143
144 qla2x00_mark_device_lost(vha, fcport, 0, 0);
145 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
146 }
147 }
148
149 int
150 qla24xx_disable_vp(scsi_qla_host_t *vha)
151 {
152 unsigned long flags;
153 int ret;
154
155 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
156 atomic_set(&vha->loop_state, LOOP_DOWN);
157 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
158
159 /* Remove port id from vp target map */
160 spin_lock_irqsave(&vha->hw->vport_slock, flags);
161 qlt_update_vp_map(vha, RESET_AL_PA);
162 spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
163
164 qla2x00_mark_vp_devices_dead(vha);
165 atomic_set(&vha->vp_state, VP_FAILED);
166 vha->flags.management_server_logged_in = 0;
167 if (ret == QLA_SUCCESS) {
168 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
169 } else {
170 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
171 return -1;
172 }
173 return 0;
174 }
175
176 int
177 qla24xx_enable_vp(scsi_qla_host_t *vha)
178 {
179 int ret;
180 struct qla_hw_data *ha = vha->hw;
181 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
182
183 /* Check if physical ha port is Up */
184 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN ||
185 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
186 !(ha->current_topology & ISP_CFG_F)) {
187 vha->vp_err_state = VP_ERR_PORTDWN;
188 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
189 goto enable_failed;
190 }
191
192 /* Initialize the new vport unless it is a persistent port */
193 mutex_lock(&ha->vport_lock);
194 ret = qla24xx_modify_vp_config(vha);
195 mutex_unlock(&ha->vport_lock);
196
197 if (ret != QLA_SUCCESS) {
198 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
199 goto enable_failed;
200 }
201
202 ql_dbg(ql_dbg_taskm, vha, 0x801a,
203 "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
204 return 0;
205
206 enable_failed:
207 ql_dbg(ql_dbg_taskm, vha, 0x801b,
208 "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
209 return 1;
210 }
211
212 static void
213 qla24xx_configure_vp(scsi_qla_host_t *vha)
214 {
215 struct fc_vport *fc_vport;
216 int ret;
217
218 fc_vport = vha->fc_vport;
219
220 ql_dbg(ql_dbg_vport, vha, 0xa002,
221 "%s: change request #3.\n", __func__);
222 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
223 if (ret != QLA_SUCCESS) {
224 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
225 "receiving of RSCN requests: 0x%x.\n", ret);
226 return;
227 } else {
228 /* Corresponds to SCR enabled */
229 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
230 }
231
232 vha->flags.online = 1;
233 if (qla24xx_configure_vhba(vha))
234 return;
235
236 atomic_set(&vha->vp_state, VP_ACTIVE);
237 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
238 }
239
240 void
241 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
242 {
243 scsi_qla_host_t *vha;
244 struct qla_hw_data *ha = rsp->hw;
245 int i = 0;
246 unsigned long flags;
247
248 spin_lock_irqsave(&ha->vport_slock, flags);
249 list_for_each_entry(vha, &ha->vp_list, list) {
250 if (vha->vp_idx) {
251 atomic_inc(&vha->vref_count);
252 spin_unlock_irqrestore(&ha->vport_slock, flags);
253
254 switch (mb[0]) {
255 case MBA_LIP_OCCURRED:
256 case MBA_LOOP_UP:
257 case MBA_LOOP_DOWN:
258 case MBA_LIP_RESET:
259 case MBA_POINT_TO_POINT:
260 case MBA_CHG_IN_CONNECTION:
261 case MBA_PORT_UPDATE:
262 case MBA_RSCN_UPDATE:
263 ql_dbg(ql_dbg_async, vha, 0x5024,
264 "Async_event for VP[%d], mb=0x%x vha=%p.\n",
265 i, *mb, vha);
266 qla2x00_async_event(vha, rsp, mb);
267 break;
268 }
269
270 spin_lock_irqsave(&ha->vport_slock, flags);
271 atomic_dec(&vha->vref_count);
272 }
273 i++;
274 }
275 spin_unlock_irqrestore(&ha->vport_slock, flags);
276 }
277
278 int
279 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
280 {
281 /*
282 * Physical port will do most of the abort and recovery work. We can
283 * just treat it as a loop down
284 */
285 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
286 atomic_set(&vha->loop_state, LOOP_DOWN);
287 qla2x00_mark_all_devices_lost(vha, 0);
288 } else {
289 if (!atomic_read(&vha->loop_down_timer))
290 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
291 }
292
293 /*
294 * To exclusively reset vport, we need to log it out first. Note: this
295 * control_vp can fail if ISP reset is already issued, this is
296 * expected, as the vp would be already logged out due to ISP reset.
297 */
298 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
299 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
300
301 ql_dbg(ql_dbg_taskm, vha, 0x801d,
302 "Scheduling enable of Vport %d.\n", vha->vp_idx);
303 return qla24xx_enable_vp(vha);
304 }
305
306 static int
307 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
308 {
309 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
310 "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
311
312 qla2x00_do_work(vha);
313
314 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
315 /* VP acquired. complete port configuration */
316 ql_dbg(ql_dbg_dpc, vha, 0x4014,
317 "Configure VP scheduled.\n");
318 qla24xx_configure_vp(vha);
319 ql_dbg(ql_dbg_dpc, vha, 0x4015,
320 "Configure VP end.\n");
321 return 0;
322 }
323
324 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
325 ql_dbg(ql_dbg_dpc, vha, 0x4016,
326 "FCPort update scheduled.\n");
327 qla2x00_update_fcports(vha);
328 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
329 ql_dbg(ql_dbg_dpc, vha, 0x4017,
330 "FCPort update end.\n");
331 }
332
333 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
334 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
335 atomic_read(&vha->loop_state) != LOOP_DOWN) {
336
337 ql_dbg(ql_dbg_dpc, vha, 0x4018,
338 "Relogin needed scheduled.\n");
339 qla2x00_relogin(vha);
340 ql_dbg(ql_dbg_dpc, vha, 0x4019,
341 "Relogin needed end.\n");
342 }
343
344 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
345 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
346 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
347 }
348
349 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
350 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
351 ql_dbg(ql_dbg_dpc, vha, 0x401a,
352 "Loop resync scheduled.\n");
353 qla2x00_loop_resync(vha);
354 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
355 ql_dbg(ql_dbg_dpc, vha, 0x401b,
356 "Loop resync end.\n");
357 }
358 }
359
360 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
361 "Exiting %s.\n", __func__);
362 return 0;
363 }
364
365 void
366 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
367 {
368 int ret;
369 struct qla_hw_data *ha = vha->hw;
370 scsi_qla_host_t *vp;
371 unsigned long flags = 0;
372
373 if (vha->vp_idx)
374 return;
375 if (list_empty(&ha->vp_list))
376 return;
377
378 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
379
380 if (!(ha->current_topology & ISP_CFG_F))
381 return;
382
383 spin_lock_irqsave(&ha->vport_slock, flags);
384 list_for_each_entry(vp, &ha->vp_list, list) {
385 if (vp->vp_idx) {
386 atomic_inc(&vp->vref_count);
387 spin_unlock_irqrestore(&ha->vport_slock, flags);
388
389 ret = qla2x00_do_dpc_vp(vp);
390
391 spin_lock_irqsave(&ha->vport_slock, flags);
392 atomic_dec(&vp->vref_count);
393 }
394 }
395 spin_unlock_irqrestore(&ha->vport_slock, flags);
396 }
397
398 int
399 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
400 {
401 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
402 struct qla_hw_data *ha = base_vha->hw;
403 scsi_qla_host_t *vha;
404 uint8_t port_name[WWN_SIZE];
405
406 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
407 return VPCERR_UNSUPPORTED;
408
409 /* Check up the F/W and H/W support NPIV */
410 if (!ha->flags.npiv_supported)
411 return VPCERR_UNSUPPORTED;
412
413 /* Check up whether npiv supported switch presented */
414 if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
415 return VPCERR_NO_FABRIC_SUPP;
416
417 /* Check up unique WWPN */
418 u64_to_wwn(fc_vport->port_name, port_name);
419 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
420 return VPCERR_BAD_WWN;
421 vha = qla24xx_find_vhost_by_name(ha, port_name);
422 if (vha)
423 return VPCERR_BAD_WWN;
424
425 /* Check up max-npiv-supports */
426 if (ha->num_vhosts > ha->max_npiv_vports) {
427 ql_dbg(ql_dbg_vport, vha, 0xa004,
428 "num_vhosts %ud is bigger "
429 "than max_npiv_vports %ud.\n",
430 ha->num_vhosts, ha->max_npiv_vports);
431 return VPCERR_UNSUPPORTED;
432 }
433 return 0;
434 }
435
436 scsi_qla_host_t *
437 qla24xx_create_vhost(struct fc_vport *fc_vport)
438 {
439 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
440 struct qla_hw_data *ha = base_vha->hw;
441 scsi_qla_host_t *vha;
442 struct scsi_host_template *sht = &qla2xxx_driver_template;
443 struct Scsi_Host *host;
444
445 vha = qla2x00_create_host(sht, ha);
446 if (!vha) {
447 ql_log(ql_log_warn, vha, 0xa005,
448 "scsi_host_alloc() failed for vport.\n");
449 return(NULL);
450 }
451
452 host = vha->host;
453 fc_vport->dd_data = vha;
454 /* New host info */
455 u64_to_wwn(fc_vport->node_name, vha->node_name);
456 u64_to_wwn(fc_vport->port_name, vha->port_name);
457
458 vha->fc_vport = fc_vport;
459 vha->device_flags = 0;
460 vha->vp_idx = qla24xx_allocate_vp_id(vha);
461 if (vha->vp_idx > ha->max_npiv_vports) {
462 ql_dbg(ql_dbg_vport, vha, 0xa006,
463 "Couldn't allocate vp_id.\n");
464 goto create_vhost_failed;
465 }
466 vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
467
468 vha->dpc_flags = 0L;
469
470 /*
471 * To fix the issue of processing a parent's RSCN for the vport before
472 * its SCR is complete.
473 */
474 set_bit(VP_SCR_NEEDED, &vha->vp_flags);
475 atomic_set(&vha->loop_state, LOOP_DOWN);
476 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
477
478 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
479
480 vha->req = base_vha->req;
481 host->can_queue = base_vha->req->length + 128;
482 host->cmd_per_lun = 3;
483 if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
484 host->max_cmd_len = 32;
485 else
486 host->max_cmd_len = MAX_CMDSZ;
487 host->max_channel = MAX_BUSES - 1;
488 host->max_lun = ql2xmaxlun;
489 host->unique_id = host->host_no;
490 host->max_id = ha->max_fibre_devices;
491 host->transportt = qla2xxx_transport_vport_template;
492
493 ql_dbg(ql_dbg_vport, vha, 0xa007,
494 "Detect vport hba %ld at address = %p.\n",
495 vha->host_no, vha);
496
497 vha->flags.init_done = 1;
498
499 mutex_lock(&ha->vport_lock);
500 set_bit(vha->vp_idx, ha->vp_idx_map);
501 ha->cur_vport_count++;
502 mutex_unlock(&ha->vport_lock);
503
504 return vha;
505
506 create_vhost_failed:
507 return NULL;
508 }
509
510 static void
511 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
512 {
513 struct qla_hw_data *ha = vha->hw;
514 uint16_t que_id = req->id;
515
516 dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
517 sizeof(request_t), req->ring, req->dma);
518 req->ring = NULL;
519 req->dma = 0;
520 if (que_id) {
521 ha->req_q_map[que_id] = NULL;
522 mutex_lock(&ha->vport_lock);
523 clear_bit(que_id, ha->req_qid_map);
524 mutex_unlock(&ha->vport_lock);
525 }
526 kfree(req->outstanding_cmds);
527 kfree(req);
528 req = NULL;
529 }
530
531 static void
532 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
533 {
534 struct qla_hw_data *ha = vha->hw;
535 uint16_t que_id = rsp->id;
536
537 if (rsp->msix && rsp->msix->have_irq) {
538 free_irq(rsp->msix->vector, rsp);
539 rsp->msix->have_irq = 0;
540 rsp->msix->rsp = NULL;
541 }
542 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
543 sizeof(response_t), rsp->ring, rsp->dma);
544 rsp->ring = NULL;
545 rsp->dma = 0;
546 if (que_id) {
547 ha->rsp_q_map[que_id] = NULL;
548 mutex_lock(&ha->vport_lock);
549 clear_bit(que_id, ha->rsp_qid_map);
550 mutex_unlock(&ha->vport_lock);
551 }
552 kfree(rsp);
553 rsp = NULL;
554 }
555
556 int
557 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
558 {
559 int ret = -1;
560
561 if (req) {
562 req->options |= BIT_0;
563 ret = qla25xx_init_req_que(vha, req);
564 }
565 if (ret == QLA_SUCCESS)
566 qla25xx_free_req_que(vha, req);
567
568 return ret;
569 }
570
571 static int
572 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
573 {
574 int ret = -1;
575
576 if (rsp) {
577 rsp->options |= BIT_0;
578 ret = qla25xx_init_rsp_que(vha, rsp);
579 }
580 if (ret == QLA_SUCCESS)
581 qla25xx_free_rsp_que(vha, rsp);
582
583 return ret;
584 }
585
586 /* Delete all queues for a given vhost */
587 int
588 qla25xx_delete_queues(struct scsi_qla_host *vha)
589 {
590 int cnt, ret = 0;
591 struct req_que *req = NULL;
592 struct rsp_que *rsp = NULL;
593 struct qla_hw_data *ha = vha->hw;
594
595 /* Delete request queues */
596 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
597 req = ha->req_q_map[cnt];
598 if (req) {
599 ret = qla25xx_delete_req_que(vha, req);
600 if (ret != QLA_SUCCESS) {
601 ql_log(ql_log_warn, vha, 0x00ea,
602 "Couldn't delete req que %d.\n",
603 req->id);
604 return ret;
605 }
606 }
607 }
608
609 /* Delete response queues */
610 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
611 rsp = ha->rsp_q_map[cnt];
612 if (rsp) {
613 ret = qla25xx_delete_rsp_que(vha, rsp);
614 if (ret != QLA_SUCCESS) {
615 ql_log(ql_log_warn, vha, 0x00eb,
616 "Couldn't delete rsp que %d.\n",
617 rsp->id);
618 return ret;
619 }
620 }
621 }
622 return ret;
623 }
624
625 int
626 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
627 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
628 {
629 int ret = 0;
630 struct req_que *req = NULL;
631 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
632 uint16_t que_id = 0;
633 device_reg_t __iomem *reg;
634 uint32_t cnt;
635
636 req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
637 if (req == NULL) {
638 ql_log(ql_log_fatal, base_vha, 0x00d9,
639 "Failed to allocate memory for request queue.\n");
640 goto failed;
641 }
642
643 req->length = REQUEST_ENTRY_CNT_24XX;
644 req->ring = dma_alloc_coherent(&ha->pdev->dev,
645 (req->length + 1) * sizeof(request_t),
646 &req->dma, GFP_KERNEL);
647 if (req->ring == NULL) {
648 ql_log(ql_log_fatal, base_vha, 0x00da,
649 "Failed to allocate memory for request_ring.\n");
650 goto que_failed;
651 }
652
653 ret = qla2x00_alloc_outstanding_cmds(ha, req);
654 if (ret != QLA_SUCCESS)
655 goto que_failed;
656
657 mutex_lock(&ha->vport_lock);
658 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
659 if (que_id >= ha->max_req_queues) {
660 mutex_unlock(&ha->vport_lock);
661 ql_log(ql_log_warn, base_vha, 0x00db,
662 "No resources to create additional request queue.\n");
663 goto que_failed;
664 }
665 set_bit(que_id, ha->req_qid_map);
666 ha->req_q_map[que_id] = req;
667 req->rid = rid;
668 req->vp_idx = vp_idx;
669 req->qos = qos;
670
671 ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
672 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
673 que_id, req->rid, req->vp_idx, req->qos);
674 ql_dbg(ql_dbg_init, base_vha, 0x00dc,
675 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
676 que_id, req->rid, req->vp_idx, req->qos);
677 if (rsp_que < 0)
678 req->rsp = NULL;
679 else
680 req->rsp = ha->rsp_q_map[rsp_que];
681 /* Use alternate PCI bus number */
682 if (MSB(req->rid))
683 options |= BIT_4;
684 /* Use alternate PCI devfn */
685 if (LSB(req->rid))
686 options |= BIT_5;
687 req->options = options;
688
689 ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
690 "options=0x%x.\n", req->options);
691 ql_dbg(ql_dbg_init, base_vha, 0x00dd,
692 "options=0x%x.\n", req->options);
693 for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
694 req->outstanding_cmds[cnt] = NULL;
695 req->current_outstanding_cmd = 1;
696
697 req->ring_ptr = req->ring;
698 req->ring_index = 0;
699 req->cnt = req->length;
700 req->id = que_id;
701 reg = ISP_QUE_REG(ha, que_id);
702 req->max_q_depth = ha->req_q_map[0]->max_q_depth;
703 mutex_unlock(&ha->vport_lock);
704 ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
705 "ring_ptr=%p ring_index=%d, "
706 "cnt=%d id=%d max_q_depth=%d.\n",
707 req->ring_ptr, req->ring_index,
708 req->cnt, req->id, req->max_q_depth);
709 ql_dbg(ql_dbg_init, base_vha, 0x00de,
710 "ring_ptr=%p ring_index=%d, "
711 "cnt=%d id=%d max_q_depth=%d.\n",
712 req->ring_ptr, req->ring_index, req->cnt,
713 req->id, req->max_q_depth);
714
715 ret = qla25xx_init_req_que(base_vha, req);
716 if (ret != QLA_SUCCESS) {
717 ql_log(ql_log_fatal, base_vha, 0x00df,
718 "%s failed.\n", __func__);
719 mutex_lock(&ha->vport_lock);
720 clear_bit(que_id, ha->req_qid_map);
721 mutex_unlock(&ha->vport_lock);
722 goto que_failed;
723 }
724
725 return req->id;
726
727 que_failed:
728 qla25xx_free_req_que(base_vha, req);
729 failed:
730 return 0;
731 }
732
733 static void qla_do_work(struct work_struct *work)
734 {
735 unsigned long flags;
736 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
737 struct scsi_qla_host *vha;
738 struct qla_hw_data *ha = rsp->hw;
739
740 spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
741 vha = pci_get_drvdata(ha->pdev);
742 qla24xx_process_response_queue(vha, rsp);
743 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
744 }
745
746 /* create response queue */
747 int
748 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
749 uint8_t vp_idx, uint16_t rid, int req)
750 {
751 int ret = 0;
752 struct rsp_que *rsp = NULL;
753 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
754 uint16_t que_id = 0;
755 device_reg_t __iomem *reg;
756
757 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
758 if (rsp == NULL) {
759 ql_log(ql_log_warn, base_vha, 0x0066,
760 "Failed to allocate memory for response queue.\n");
761 goto failed;
762 }
763
764 rsp->length = RESPONSE_ENTRY_CNT_MQ;
765 rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
766 (rsp->length + 1) * sizeof(response_t),
767 &rsp->dma, GFP_KERNEL);
768 if (rsp->ring == NULL) {
769 ql_log(ql_log_warn, base_vha, 0x00e1,
770 "Failed to allocate memory for response ring.\n");
771 goto que_failed;
772 }
773
774 mutex_lock(&ha->vport_lock);
775 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
776 if (que_id >= ha->max_rsp_queues) {
777 mutex_unlock(&ha->vport_lock);
778 ql_log(ql_log_warn, base_vha, 0x00e2,
779 "No resources to create additional request queue.\n");
780 goto que_failed;
781 }
782 set_bit(que_id, ha->rsp_qid_map);
783
784 if (ha->flags.msix_enabled)
785 rsp->msix = &ha->msix_entries[que_id + 1];
786 else
787 ql_log(ql_log_warn, base_vha, 0x00e3,
788 "MSIX not enalbled.\n");
789
790 ha->rsp_q_map[que_id] = rsp;
791 rsp->rid = rid;
792 rsp->vp_idx = vp_idx;
793 rsp->hw = ha;
794 ql_dbg(ql_dbg_init, base_vha, 0x00e4,
795 "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
796 que_id, rsp->rid, rsp->vp_idx, rsp->hw);
797 /* Use alternate PCI bus number */
798 if (MSB(rsp->rid))
799 options |= BIT_4;
800 /* Use alternate PCI devfn */
801 if (LSB(rsp->rid))
802 options |= BIT_5;
803 /* Enable MSIX handshake mode on for uncapable adapters */
804 if (!IS_MSIX_NACK_CAPABLE(ha))
805 options |= BIT_6;
806
807 rsp->options = options;
808 rsp->id = que_id;
809 reg = ISP_QUE_REG(ha, que_id);
810 rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
811 rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
812 mutex_unlock(&ha->vport_lock);
813 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
814 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
815 rsp->options, rsp->id, rsp->rsp_q_in,
816 rsp->rsp_q_out);
817 ql_dbg(ql_dbg_init, base_vha, 0x00e5,
818 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
819 rsp->options, rsp->id, rsp->rsp_q_in,
820 rsp->rsp_q_out);
821
822 ret = qla25xx_request_irq(rsp);
823 if (ret)
824 goto que_failed;
825
826 ret = qla25xx_init_rsp_que(base_vha, rsp);
827 if (ret != QLA_SUCCESS) {
828 ql_log(ql_log_fatal, base_vha, 0x00e7,
829 "%s failed.\n", __func__);
830 mutex_lock(&ha->vport_lock);
831 clear_bit(que_id, ha->rsp_qid_map);
832 mutex_unlock(&ha->vport_lock);
833 goto que_failed;
834 }
835 if (req >= 0)
836 rsp->req = ha->req_q_map[req];
837 else
838 rsp->req = NULL;
839
840 qla2x00_init_response_q_entries(rsp);
841 if (rsp->hw->wq)
842 INIT_WORK(&rsp->q_work, qla_do_work);
843 return rsp->id;
844
845 que_failed:
846 qla25xx_free_rsp_que(base_vha, rsp);
847 failed:
848 return 0;
849 }
Linus' kernel tree