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x86/mm/pat: Don't report PAT on CPUs that don't support it
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / qla_mid.c
blob09a490c98763a9406a6eafd3082df8f8ed50a149
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2014 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 wait_event_timeout(vha->vref_waitq, atomic_read(&vha->vref_count),
78 10*HZ);
79
80 spin_lock_irqsave(&ha->vport_slock, flags);
81 if (atomic_read(&vha->vref_count)) {
82 ql_dbg(ql_dbg_vport, vha, 0xfffa,
83 "vha->vref_count=%u timeout\n", vha->vref_count.counter);
84 vha->vref_count = (atomic_t)ATOMIC_INIT(0);
85 }
86 list_del(&vha->list);
87 qlt_update_vp_map(vha, RESET_VP_IDX);
88 spin_unlock_irqrestore(&ha->vport_slock, flags);
89
90 vp_id = vha->vp_idx;
91 ha->num_vhosts--;
92 clear_bit(vp_id, ha->vp_idx_map);
93
94 mutex_unlock(&ha->vport_lock);
95 }
96
97 static scsi_qla_host_t *
98 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
99 {
100 scsi_qla_host_t *vha;
101 struct scsi_qla_host *tvha;
102 unsigned long flags;
103
104 spin_lock_irqsave(&ha->vport_slock, flags);
105 /* Locate matching device in database. */
106 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
107 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
108 spin_unlock_irqrestore(&ha->vport_slock, flags);
109 return vha;
110 }
111 }
112 spin_unlock_irqrestore(&ha->vport_slock, flags);
113 return NULL;
114 }
115
116 /*
117 * qla2x00_mark_vp_devices_dead
118 * Updates fcport state when device goes offline.
119 *
120 * Input:
121 * ha = adapter block pointer.
122 * fcport = port structure pointer.
123 *
124 * Return:
125 * None.
126 *
127 * Context:
128 */
129 static void
130 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
131 {
132 /*
133 * !!! NOTE !!!
134 * This function, if called in contexts other than vp create, disable
135 * or delete, please make sure this is synchronized with the
136 * delete thread.
137 */
138 fc_port_t *fcport;
139
140 list_for_each_entry(fcport, &vha->vp_fcports, list) {
141 ql_dbg(ql_dbg_vport, vha, 0xa001,
142 "Marking port dead, loop_id=0x%04x : %x.\n",
143 fcport->loop_id, fcport->vha->vp_idx);
144
145 qla2x00_mark_device_lost(vha, fcport, 0, 0);
146 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
147 }
148 }
149
150 int
151 qla24xx_disable_vp(scsi_qla_host_t *vha)
152 {
153 unsigned long flags;
154 int ret;
155
156 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
157 atomic_set(&vha->loop_state, LOOP_DOWN);
158 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
159
160 /* Remove port id from vp target map */
161 spin_lock_irqsave(&vha->hw->vport_slock, flags);
162 qlt_update_vp_map(vha, RESET_AL_PA);
163 spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
164
165 qla2x00_mark_vp_devices_dead(vha);
166 atomic_set(&vha->vp_state, VP_FAILED);
167 vha->flags.management_server_logged_in = 0;
168 if (ret == QLA_SUCCESS) {
169 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
170 } else {
171 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
172 return -1;
173 }
174 return 0;
175 }
176
177 int
178 qla24xx_enable_vp(scsi_qla_host_t *vha)
179 {
180 int ret;
181 struct qla_hw_data *ha = vha->hw;
182 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
183
184 /* Check if physical ha port is Up */
185 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN ||
186 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
187 !(ha->current_topology & ISP_CFG_F)) {
188 vha->vp_err_state = VP_ERR_PORTDWN;
189 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
190 goto enable_failed;
191 }
192
193 /* Initialize the new vport unless it is a persistent port */
194 mutex_lock(&ha->vport_lock);
195 ret = qla24xx_modify_vp_config(vha);
196 mutex_unlock(&ha->vport_lock);
197
198 if (ret != QLA_SUCCESS) {
199 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
200 goto enable_failed;
201 }
202
203 ql_dbg(ql_dbg_taskm, vha, 0x801a,
204 "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
205 return 0;
206
207 enable_failed:
208 ql_dbg(ql_dbg_taskm, vha, 0x801b,
209 "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
210 return 1;
211 }
212
213 static void
214 qla24xx_configure_vp(scsi_qla_host_t *vha)
215 {
216 struct fc_vport *fc_vport;
217 int ret;
218
219 fc_vport = vha->fc_vport;
220
221 ql_dbg(ql_dbg_vport, vha, 0xa002,
222 "%s: change request #3.\n", __func__);
223 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
224 if (ret != QLA_SUCCESS) {
225 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
226 "receiving of RSCN requests: 0x%x.\n", ret);
227 return;
228 } else {
229 /* Corresponds to SCR enabled */
230 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
231 }
232
233 vha->flags.online = 1;
234 if (qla24xx_configure_vhba(vha))
235 return;
236
237 atomic_set(&vha->vp_state, VP_ACTIVE);
238 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
239 }
240
241 void
242 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
243 {
244 scsi_qla_host_t *vha;
245 struct qla_hw_data *ha = rsp->hw;
246 int i = 0;
247 unsigned long flags;
248
249 spin_lock_irqsave(&ha->vport_slock, flags);
250 list_for_each_entry(vha, &ha->vp_list, list) {
251 if (vha->vp_idx) {
252 atomic_inc(&vha->vref_count);
253 spin_unlock_irqrestore(&ha->vport_slock, flags);
254
255 switch (mb[0]) {
256 case MBA_LIP_OCCURRED:
257 case MBA_LOOP_UP:
258 case MBA_LOOP_DOWN:
259 case MBA_LIP_RESET:
260 case MBA_POINT_TO_POINT:
261 case MBA_CHG_IN_CONNECTION:
262 case MBA_PORT_UPDATE:
263 case MBA_RSCN_UPDATE:
264 ql_dbg(ql_dbg_async, vha, 0x5024,
265 "Async_event for VP[%d], mb=0x%x vha=%p.\n",
266 i, *mb, vha);
267 qla2x00_async_event(vha, rsp, mb);
268 break;
269 }
270
271 spin_lock_irqsave(&ha->vport_slock, flags);
272 atomic_dec(&vha->vref_count);
273 wake_up(&vha->vref_waitq);
274 }
275 i++;
276 }
277 spin_unlock_irqrestore(&ha->vport_slock, flags);
278 }
279
280 int
281 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
282 {
283 /*
284 * Physical port will do most of the abort and recovery work. We can
285 * just treat it as a loop down
286 */
287 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
288 atomic_set(&vha->loop_state, LOOP_DOWN);
289 qla2x00_mark_all_devices_lost(vha, 0);
290 } else {
291 if (!atomic_read(&vha->loop_down_timer))
292 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
293 }
294
295 /*
296 * To exclusively reset vport, we need to log it out first. Note: this
297 * control_vp can fail if ISP reset is already issued, this is
298 * expected, as the vp would be already logged out due to ISP reset.
299 */
300 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
301 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
302
303 ql_dbg(ql_dbg_taskm, vha, 0x801d,
304 "Scheduling enable of Vport %d.\n", vha->vp_idx);
305 return qla24xx_enable_vp(vha);
306 }
307
308 static int
309 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
310 {
311 struct qla_hw_data *ha = vha->hw;
312 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
313
314 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
315 "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
316
317 qla2x00_do_work(vha);
318
319 /* Check if Fw is ready to configure VP first */
320 if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
321 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
322 /* VP acquired. complete port configuration */
323 ql_dbg(ql_dbg_dpc, vha, 0x4014,
324 "Configure VP scheduled.\n");
325 qla24xx_configure_vp(vha);
326 ql_dbg(ql_dbg_dpc, vha, 0x4015,
327 "Configure VP end.\n");
328 return 0;
329 }
330 }
331
332 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
333 ql_dbg(ql_dbg_dpc, vha, 0x4016,
334 "FCPort update scheduled.\n");
335 qla2x00_update_fcports(vha);
336 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
337 ql_dbg(ql_dbg_dpc, vha, 0x4017,
338 "FCPort update end.\n");
339 }
340
341 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
342 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
343 atomic_read(&vha->loop_state) != LOOP_DOWN) {
344
345 ql_dbg(ql_dbg_dpc, vha, 0x4018,
346 "Relogin needed scheduled.\n");
347 qla2x00_relogin(vha);
348 ql_dbg(ql_dbg_dpc, vha, 0x4019,
349 "Relogin needed end.\n");
350 }
351
352 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
353 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
354 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
355 }
356
357 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
358 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
359 ql_dbg(ql_dbg_dpc, vha, 0x401a,
360 "Loop resync scheduled.\n");
361 qla2x00_loop_resync(vha);
362 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
363 ql_dbg(ql_dbg_dpc, vha, 0x401b,
364 "Loop resync end.\n");
365 }
366 }
367
368 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
369 "Exiting %s.\n", __func__);
370 return 0;
371 }
372
373 void
374 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
375 {
376 struct qla_hw_data *ha = vha->hw;
377 scsi_qla_host_t *vp;
378 unsigned long flags = 0;
379
380 if (vha->vp_idx)
381 return;
382 if (list_empty(&ha->vp_list))
383 return;
384
385 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
386
387 if (!(ha->current_topology & ISP_CFG_F))
388 return;
389
390 spin_lock_irqsave(&ha->vport_slock, flags);
391 list_for_each_entry(vp, &ha->vp_list, list) {
392 if (vp->vp_idx) {
393 atomic_inc(&vp->vref_count);
394 spin_unlock_irqrestore(&ha->vport_slock, flags);
395
396 qla2x00_do_dpc_vp(vp);
397
398 spin_lock_irqsave(&ha->vport_slock, flags);
399 atomic_dec(&vp->vref_count);
400 }
401 }
402 spin_unlock_irqrestore(&ha->vport_slock, flags);
403 }
404
405 int
406 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
407 {
408 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
409 struct qla_hw_data *ha = base_vha->hw;
410 scsi_qla_host_t *vha;
411 uint8_t port_name[WWN_SIZE];
412
413 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
414 return VPCERR_UNSUPPORTED;
415
416 /* Check up the F/W and H/W support NPIV */
417 if (!ha->flags.npiv_supported)
418 return VPCERR_UNSUPPORTED;
419
420 /* Check up whether npiv supported switch presented */
421 if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
422 return VPCERR_NO_FABRIC_SUPP;
423
424 /* Check up unique WWPN */
425 u64_to_wwn(fc_vport->port_name, port_name);
426 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
427 return VPCERR_BAD_WWN;
428 vha = qla24xx_find_vhost_by_name(ha, port_name);
429 if (vha)
430 return VPCERR_BAD_WWN;
431
432 /* Check up max-npiv-supports */
433 if (ha->num_vhosts > ha->max_npiv_vports) {
434 ql_dbg(ql_dbg_vport, vha, 0xa004,
435 "num_vhosts %ud is bigger "
436 "than max_npiv_vports %ud.\n",
437 ha->num_vhosts, ha->max_npiv_vports);
438 return VPCERR_UNSUPPORTED;
439 }
440 return 0;
441 }
442
443 scsi_qla_host_t *
444 qla24xx_create_vhost(struct fc_vport *fc_vport)
445 {
446 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
447 struct qla_hw_data *ha = base_vha->hw;
448 scsi_qla_host_t *vha;
449 struct scsi_host_template *sht = &qla2xxx_driver_template;
450 struct Scsi_Host *host;
451
452 vha = qla2x00_create_host(sht, ha);
453 if (!vha) {
454 ql_log(ql_log_warn, vha, 0xa005,
455 "scsi_host_alloc() failed for vport.\n");
456 return(NULL);
457 }
458
459 host = vha->host;
460 fc_vport->dd_data = vha;
461 /* New host info */
462 u64_to_wwn(fc_vport->node_name, vha->node_name);
463 u64_to_wwn(fc_vport->port_name, vha->port_name);
464
465 vha->fc_vport = fc_vport;
466 vha->device_flags = 0;
467 vha->vp_idx = qla24xx_allocate_vp_id(vha);
468 if (vha->vp_idx > ha->max_npiv_vports) {
469 ql_dbg(ql_dbg_vport, vha, 0xa006,
470 "Couldn't allocate vp_id.\n");
471 goto create_vhost_failed;
472 }
473 vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
474
475 vha->dpc_flags = 0L;
476
477 /*
478 * To fix the issue of processing a parent's RSCN for the vport before
479 * its SCR is complete.
480 */
481 set_bit(VP_SCR_NEEDED, &vha->vp_flags);
482 atomic_set(&vha->loop_state, LOOP_DOWN);
483 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
484
485 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
486
487 vha->req = base_vha->req;
488 host->can_queue = base_vha->req->length + 128;
489 host->cmd_per_lun = 3;
490 if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
491 host->max_cmd_len = 32;
492 else
493 host->max_cmd_len = MAX_CMDSZ;
494 host->max_channel = MAX_BUSES - 1;
495 host->max_lun = ql2xmaxlun;
496 host->unique_id = host->host_no;
497 host->max_id = ha->max_fibre_devices;
498 host->transportt = qla2xxx_transport_vport_template;
499
500 ql_dbg(ql_dbg_vport, vha, 0xa007,
501 "Detect vport hba %ld at address = %p.\n",
502 vha->host_no, vha);
503
504 vha->flags.init_done = 1;
505
506 mutex_lock(&ha->vport_lock);
507 set_bit(vha->vp_idx, ha->vp_idx_map);
508 ha->cur_vport_count++;
509 mutex_unlock(&ha->vport_lock);
510
511 return vha;
512
513 create_vhost_failed:
514 return NULL;
515 }
516
517 static void
518 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
519 {
520 struct qla_hw_data *ha = vha->hw;
521 uint16_t que_id = req->id;
522
523 dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
524 sizeof(request_t), req->ring, req->dma);
525 req->ring = NULL;
526 req->dma = 0;
527 if (que_id) {
528 ha->req_q_map[que_id] = NULL;
529 mutex_lock(&ha->vport_lock);
530 clear_bit(que_id, ha->req_qid_map);
531 mutex_unlock(&ha->vport_lock);
532 }
533 kfree(req->outstanding_cmds);
534 kfree(req);
535 req = NULL;
536 }
537
538 static void
539 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
540 {
541 struct qla_hw_data *ha = vha->hw;
542 uint16_t que_id = rsp->id;
543
544 if (rsp->msix && rsp->msix->have_irq) {
545 free_irq(rsp->msix->vector, rsp->msix->handle);
546 rsp->msix->have_irq = 0;
547 rsp->msix->in_use = 0;
548 rsp->msix->handle = NULL;
549 }
550 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
551 sizeof(response_t), rsp->ring, rsp->dma);
552 rsp->ring = NULL;
553 rsp->dma = 0;
554 if (que_id) {
555 ha->rsp_q_map[que_id] = NULL;
556 mutex_lock(&ha->vport_lock);
557 clear_bit(que_id, ha->rsp_qid_map);
558 mutex_unlock(&ha->vport_lock);
559 }
560 kfree(rsp);
561 rsp = NULL;
562 }
563
564 int
565 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
566 {
567 int ret = -1;
568
569 if (req) {
570 req->options |= BIT_0;
571 ret = qla25xx_init_req_que(vha, req);
572 }
573 if (ret == QLA_SUCCESS)
574 qla25xx_free_req_que(vha, req);
575
576 return ret;
577 }
578
579 int
580 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
581 {
582 int ret = -1;
583
584 if (rsp) {
585 rsp->options |= BIT_0;
586 ret = qla25xx_init_rsp_que(vha, rsp);
587 }
588 if (ret == QLA_SUCCESS)
589 qla25xx_free_rsp_que(vha, rsp);
590
591 return ret;
592 }
593
594 /* Delete all queues for a given vhost */
595 int
596 qla25xx_delete_queues(struct scsi_qla_host *vha)
597 {
598 int cnt, ret = 0;
599 struct req_que *req = NULL;
600 struct rsp_que *rsp = NULL;
601 struct qla_hw_data *ha = vha->hw;
602 struct qla_qpair *qpair, *tqpair;
603
604 if (ql2xmqsupport) {
605 list_for_each_entry_safe(qpair, tqpair, &vha->qp_list,
606 qp_list_elem)
607 qla2xxx_delete_qpair(vha, qpair);
608 } else {
609 /* Delete request queues */
610 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
611 req = ha->req_q_map[cnt];
612 if (req && test_bit(cnt, ha->req_qid_map)) {
613 ret = qla25xx_delete_req_que(vha, req);
614 if (ret != QLA_SUCCESS) {
615 ql_log(ql_log_warn, vha, 0x00ea,
616 "Couldn't delete req que %d.\n",
617 req->id);
618 return ret;
619 }
620 }
621 }
622
623 /* Delete response queues */
624 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
625 rsp = ha->rsp_q_map[cnt];
626 if (rsp && test_bit(cnt, ha->rsp_qid_map)) {
627 ret = qla25xx_delete_rsp_que(vha, rsp);
628 if (ret != QLA_SUCCESS) {
629 ql_log(ql_log_warn, vha, 0x00eb,
630 "Couldn't delete rsp que %d.\n",
631 rsp->id);
632 return ret;
633 }
634 }
635 }
636 }
637
638 return ret;
639 }
640
641 int
642 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
643 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
644 {
645 int ret = 0;
646 struct req_que *req = NULL;
647 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
648 uint16_t que_id = 0;
649 device_reg_t *reg;
650 uint32_t cnt;
651
652 req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
653 if (req == NULL) {
654 ql_log(ql_log_fatal, base_vha, 0x00d9,
655 "Failed to allocate memory for request queue.\n");
656 goto failed;
657 }
658
659 req->length = REQUEST_ENTRY_CNT_24XX;
660 req->ring = dma_alloc_coherent(&ha->pdev->dev,
661 (req->length + 1) * sizeof(request_t),
662 &req->dma, GFP_KERNEL);
663 if (req->ring == NULL) {
664 ql_log(ql_log_fatal, base_vha, 0x00da,
665 "Failed to allocate memory for request_ring.\n");
666 goto que_failed;
667 }
668
669 ret = qla2x00_alloc_outstanding_cmds(ha, req);
670 if (ret != QLA_SUCCESS)
671 goto que_failed;
672
673 mutex_lock(&ha->mq_lock);
674 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
675 if (que_id >= ha->max_req_queues) {
676 mutex_unlock(&ha->mq_lock);
677 ql_log(ql_log_warn, base_vha, 0x00db,
678 "No resources to create additional request queue.\n");
679 goto que_failed;
680 }
681 set_bit(que_id, ha->req_qid_map);
682 ha->req_q_map[que_id] = req;
683 req->rid = rid;
684 req->vp_idx = vp_idx;
685 req->qos = qos;
686
687 ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
688 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
689 que_id, req->rid, req->vp_idx, req->qos);
690 ql_dbg(ql_dbg_init, base_vha, 0x00dc,
691 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
692 que_id, req->rid, req->vp_idx, req->qos);
693 if (rsp_que < 0)
694 req->rsp = NULL;
695 else
696 req->rsp = ha->rsp_q_map[rsp_que];
697 /* Use alternate PCI bus number */
698 if (MSB(req->rid))
699 options |= BIT_4;
700 /* Use alternate PCI devfn */
701 if (LSB(req->rid))
702 options |= BIT_5;
703 req->options = options;
704
705 ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
706 "options=0x%x.\n", req->options);
707 ql_dbg(ql_dbg_init, base_vha, 0x00dd,
708 "options=0x%x.\n", req->options);
709 for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
710 req->outstanding_cmds[cnt] = NULL;
711 req->current_outstanding_cmd = 1;
712
713 req->ring_ptr = req->ring;
714 req->ring_index = 0;
715 req->cnt = req->length;
716 req->id = que_id;
717 reg = ISP_QUE_REG(ha, que_id);
718 req->req_q_in = &reg->isp25mq.req_q_in;
719 req->req_q_out = &reg->isp25mq.req_q_out;
720 req->max_q_depth = ha->req_q_map[0]->max_q_depth;
721 req->out_ptr = (void *)(req->ring + req->length);
722 mutex_unlock(&ha->mq_lock);
723 ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
724 "ring_ptr=%p ring_index=%d, "
725 "cnt=%d id=%d max_q_depth=%d.\n",
726 req->ring_ptr, req->ring_index,
727 req->cnt, req->id, req->max_q_depth);
728 ql_dbg(ql_dbg_init, base_vha, 0x00de,
729 "ring_ptr=%p ring_index=%d, "
730 "cnt=%d id=%d max_q_depth=%d.\n",
731 req->ring_ptr, req->ring_index, req->cnt,
732 req->id, req->max_q_depth);
733
734 ret = qla25xx_init_req_que(base_vha, req);
735 if (ret != QLA_SUCCESS) {
736 ql_log(ql_log_fatal, base_vha, 0x00df,
737 "%s failed.\n", __func__);
738 mutex_lock(&ha->mq_lock);
739 clear_bit(que_id, ha->req_qid_map);
740 mutex_unlock(&ha->mq_lock);
741 goto que_failed;
742 }
743
744 return req->id;
745
746 que_failed:
747 qla25xx_free_req_que(base_vha, req);
748 failed:
749 return 0;
750 }
751
752 static void qla_do_work(struct work_struct *work)
753 {
754 unsigned long flags;
755 struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
756 struct scsi_qla_host *vha;
757 struct qla_hw_data *ha = qpair->hw;
758
759 spin_lock_irqsave(&qpair->qp_lock, flags);
760 vha = pci_get_drvdata(ha->pdev);
761 qla24xx_process_response_queue(vha, qpair->rsp);
762 spin_unlock_irqrestore(&qpair->qp_lock, flags);
763 }
764
765 /* create response queue */
766 int
767 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
768 uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair)
769 {
770 int ret = 0;
771 struct rsp_que *rsp = NULL;
772 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
773 uint16_t que_id = 0;
774 device_reg_t *reg;
775
776 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
777 if (rsp == NULL) {
778 ql_log(ql_log_warn, base_vha, 0x0066,
779 "Failed to allocate memory for response queue.\n");
780 goto failed;
781 }
782
783 rsp->length = RESPONSE_ENTRY_CNT_MQ;
784 rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
785 (rsp->length + 1) * sizeof(response_t),
786 &rsp->dma, GFP_KERNEL);
787 if (rsp->ring == NULL) {
788 ql_log(ql_log_warn, base_vha, 0x00e1,
789 "Failed to allocate memory for response ring.\n");
790 goto que_failed;
791 }
792
793 mutex_lock(&ha->mq_lock);
794 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
795 if (que_id >= ha->max_rsp_queues) {
796 mutex_unlock(&ha->mq_lock);
797 ql_log(ql_log_warn, base_vha, 0x00e2,
798 "No resources to create additional request queue.\n");
799 goto que_failed;
800 }
801 set_bit(que_id, ha->rsp_qid_map);
802
803 rsp->msix = qpair->msix;
804
805 ha->rsp_q_map[que_id] = rsp;
806 rsp->rid = rid;
807 rsp->vp_idx = vp_idx;
808 rsp->hw = ha;
809 ql_dbg(ql_dbg_init, base_vha, 0x00e4,
810 "rsp queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
811 que_id, rsp->rid, rsp->vp_idx, rsp->hw);
812 /* Use alternate PCI bus number */
813 if (MSB(rsp->rid))
814 options |= BIT_4;
815 /* Use alternate PCI devfn */
816 if (LSB(rsp->rid))
817 options |= BIT_5;
818 /* Enable MSIX handshake mode on for uncapable adapters */
819 if (!IS_MSIX_NACK_CAPABLE(ha))
820 options |= BIT_6;
821
822 /* Set option to indicate response queue creation */
823 options |= BIT_1;
824
825 rsp->options = options;
826 rsp->id = que_id;
827 reg = ISP_QUE_REG(ha, que_id);
828 rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
829 rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
830 rsp->in_ptr = (void *)(rsp->ring + rsp->length);
831 mutex_unlock(&ha->mq_lock);
832 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
833 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
834 rsp->options, rsp->id, rsp->rsp_q_in,
835 rsp->rsp_q_out);
836 ql_dbg(ql_dbg_init, base_vha, 0x00e5,
837 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
838 rsp->options, rsp->id, rsp->rsp_q_in,
839 rsp->rsp_q_out);
840
841 ret = qla25xx_request_irq(ha, qpair, qpair->msix,
842 QLA_MSIX_QPAIR_MULTIQ_RSP_Q);
843 if (ret)
844 goto que_failed;
845
846 ret = qla25xx_init_rsp_que(base_vha, rsp);
847 if (ret != QLA_SUCCESS) {
848 ql_log(ql_log_fatal, base_vha, 0x00e7,
849 "%s failed.\n", __func__);
850 mutex_lock(&ha->mq_lock);
851 clear_bit(que_id, ha->rsp_qid_map);
852 mutex_unlock(&ha->mq_lock);
853 goto que_failed;
854 }
855 rsp->req = NULL;
856
857 qla2x00_init_response_q_entries(rsp);
858 if (qpair->hw->wq)
859 INIT_WORK(&qpair->q_work, qla_do_work);
860 return rsp->id;
861
862 que_failed:
863 qla25xx_free_rsp_que(base_vha, rsp);
864 failed:
865 return 0;
866 }
Linux with added FPC-III support