aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/qla2xxx/qla_mid.c
blob: c706ed370000390f8450256aa2427817800e8430 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2011 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"
#include "qla_gbl.h"

#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/list.h>

#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
#include <linux/delay.h>

void
qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
{
	if (vha->vp_idx && vha->timer_active) {
		del_timer_sync(&vha->timer);
		vha->timer_active = 0;
	}
}

static uint32_t
qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
{
	uint32_t vp_id;
	struct qla_hw_data *ha = vha->hw;
	unsigned long flags;

	/* Find an empty slot and assign an vp_id */
	mutex_lock(&ha->vport_lock);
	vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
	if (vp_id > ha->max_npiv_vports) {
		ql_dbg(ql_dbg_vport, vha, 0xa000,
		    "vp_id %d is bigger than max-supported %d.\n",
		    vp_id, ha->max_npiv_vports);
		mutex_unlock(&ha->vport_lock);
		return vp_id;
	}

	set_bit(vp_id, ha->vp_idx_map);
	ha->num_vhosts++;
	vha->vp_idx = vp_id;

	spin_lock_irqsave(&ha->vport_slock, flags);
	list_add_tail(&vha->list, &ha->vp_list);
	spin_unlock_irqrestore(&ha->vport_slock, flags);

	mutex_unlock(&ha->vport_lock);
	return vp_id;
}

void
qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
{
	uint16_t vp_id;
	struct qla_hw_data *ha = vha->hw;
	unsigned long flags = 0;

	mutex_lock(&ha->vport_lock);
	/*
	 * Wait for all pending activities to finish before removing vport from
	 * the list.
	 * Lock needs to be held for safe removal from the list (it
	 * ensures no active vp_list traversal while the vport is removed
	 * from the queue)
	 */
	spin_lock_irqsave(&ha->vport_slock, flags);
	while (atomic_read(&vha->vref_count)) {
		spin_unlock_irqrestore(&ha->vport_slock, flags);

		msleep(500);

		spin_lock_irqsave(&ha->vport_slock, flags);
	}
	list_del(&vha->list);
	spin_unlock_irqrestore(&ha->vport_slock, flags);

	vp_id = vha->vp_idx;
	ha->num_vhosts--;
	clear_bit(vp_id, ha->vp_idx_map);

	mutex_unlock(&ha->vport_lock);
}

static scsi_qla_host_t *
qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
{
	scsi_qla_host_t *vha;
	struct scsi_qla_host *tvha;
	unsigned long flags;

	spin_lock_irqsave(&ha->vport_slock, flags);
	/* Locate matching device in database. */
	list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
		if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
			spin_unlock_irqrestore(&ha->vport_slock, flags);
			return vha;
		}
	}
	spin_unlock_irqrestore(&ha->vport_slock, flags);
	return NULL;
}

/*
 * qla2x00_mark_vp_devices_dead
 *	Updates fcport state when device goes offline.
 *
 * Input:
 *	ha = adapter block pointer.
 *	fcport = port structure pointer.
 *
 * Return:
 *	None.
 *
 * Context:
 */
static void
qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
{
	/*
	 * !!! NOTE !!!
	 * This function, if called in contexts other than vp create, disable
	 * or delete, please make sure this is synchronized with the
	 * delete thread.
	 */
	fc_port_t *fcport;

	list_for_each_entry(fcport, &vha->vp_fcports, list) {
		ql_dbg(ql_dbg_vport, vha, 0xa001,
		    "Marking port dead, loop_id=0x%04x : %x.\n",
		    fcport->loop_id, fcport->vp_idx);

		qla2x00_mark_device_lost(vha, fcport, 0, 0);
		qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
	}
}

int
qla24xx_disable_vp(scsi_qla_host_t *vha)
{
	int ret;

	ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
	atomic_set(&vha->loop_state, LOOP_DOWN);
	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);

	qla2x00_mark_vp_devices_dead(vha);
	atomic_set(&vha->vp_state, VP_FAILED);
	vha->flags.management_server_logged_in = 0;
	if (ret == QLA_SUCCESS) {
		fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
	} else {
		fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
		return -1;
	}
	return 0;
}

int
qla24xx_enable_vp(scsi_qla_host_t *vha)
{
	int ret;
	struct qla_hw_data *ha = vha->hw;
	scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

	/* Check if physical ha port is Up */
	if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
		atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
		!(ha->current_topology & ISP_CFG_F)) {
		vha->vp_err_state =  VP_ERR_PORTDWN;
		fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
		goto enable_failed;
	}

	/* Initialize the new vport unless it is a persistent port */
	mutex_lock(&ha->vport_lock);
	ret = qla24xx_modify_vp_config(vha);
	mutex_unlock(&ha->vport_lock);

	if (ret != QLA_SUCCESS) {
		fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
		goto enable_failed;
	}

	ql_dbg(ql_dbg_taskm, vha, 0x801a,
	    "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
	return 0;

enable_failed:
	ql_dbg(ql_dbg_taskm, vha, 0x801b,
	    "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
	return 1;
}

static void
qla24xx_configure_vp(scsi_qla_host_t *vha)
{
	struct fc_vport *fc_vport;
	int ret;

	fc_vport = vha->fc_vport;

	ql_dbg(ql_dbg_vport, vha, 0xa002,
	    "%s: change request #3.\n", __func__);
	ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
	if (ret != QLA_SUCCESS) {
		ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
		    "receiving of RSCN requests: 0x%x.\n", ret);
		return;
	} else {
		/* Corresponds to SCR enabled */
		clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
	}

	vha->flags.online = 1;
	if (qla24xx_configure_vhba(vha))
		return;

	atomic_set(&vha->vp_state, VP_ACTIVE);
	fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
}

void
qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
{
	scsi_qla_host_t *vha;
	struct qla_hw_data *ha = rsp->hw;
	int i = 0;
	unsigned long flags;

	spin_lock_irqsave(&ha->vport_slock, flags);
	list_for_each_entry(vha, &ha->vp_list, list) {
		if (vha->vp_idx) {
			atomic_inc(&vha->vref_count);
			spin_unlock_irqrestore(&ha->vport_slock, flags);

			switch (mb[0]) {
			case MBA_LIP_OCCURRED:
			case MBA_LOOP_UP:
			case MBA_LOOP_DOWN:
			case MBA_LIP_RESET:
			case MBA_POINT_TO_POINT:
			case MBA_CHG_IN_CONNECTION:
			case MBA_PORT_UPDATE:
			case MBA_RSCN_UPDATE:
				ql_dbg(ql_dbg_async, vha, 0x5024,
				    "Async_event for VP[%d], mb=0x%x vha=%p.\n",
				    i, *mb, vha);
				qla2x00_async_event(vha, rsp, mb);
				break;
			}

			spin_lock_irqsave(&ha->vport_slock, flags);
			atomic_dec(&vha->vref_count);
		}
		i++;
	}
	spin_unlock_irqrestore(&ha->vport_slock, flags);
}

int
qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
{
	/*
	 * Physical port will do most of the abort and recovery work. We can
	 * just treat it as a loop down
	 */
	if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
		atomic_set(&vha->loop_state, LOOP_DOWN);
		qla2x00_mark_all_devices_lost(vha, 0);
	} else {
		if (!atomic_read(&vha->loop_down_timer))
			atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
	}

	/*
	 * To exclusively reset vport, we need to log it out first.  Note: this
	 * control_vp can fail if ISP reset is already issued, this is
	 * expected, as the vp would be already logged out due to ISP reset.
	 */
	if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
		qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);

	ql_dbg(ql_dbg_taskm, vha, 0x801d,
	    "Scheduling enable of Vport %d.\n", vha->vp_idx);
	return qla24xx_enable_vp(vha);
}

static int
qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
{
	ql_dbg(ql_dbg_dpc, vha, 0x4012,
	    "Entering %s.\n", __func__);
	ql_dbg(ql_dbg_dpc, vha, 0x4013,
	    "vp_flags: 0x%lx.\n", vha->vp_flags);

	qla2x00_do_work(vha);

	if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
		/* VP acquired. complete port configuration */
		ql_dbg(ql_dbg_dpc, vha, 0x4014,
		    "Configure VP scheduled.\n");
		qla24xx_configure_vp(vha);
		ql_dbg(ql_dbg_dpc, vha, 0x4015,
		    "Configure VP end.\n");
		return 0;
	}

	if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
		ql_dbg(ql_dbg_dpc, vha, 0x4016,
		    "FCPort update scheduled.\n");
		qla2x00_update_fcports(vha);
		clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
		ql_dbg(ql_dbg_dpc, vha, 0x4017,
		    "FCPort update end.\n");
	}

	if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
		!test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
		atomic_read(&vha->loop_state) != LOOP_DOWN) {

		ql_dbg(ql_dbg_dpc, vha, 0x4018,
		    "Relogin needed scheduled.\n");
		qla2x00_relogin(vha);
		ql_dbg(ql_dbg_dpc, vha, 0x4019,
		    "Relogin needed end.\n");
	}

	if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
	    (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
		clear_bit(RESET_ACTIVE, &vha->dpc_flags);
	}

	if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
		if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
			ql_dbg(ql_dbg_dpc, vha, 0x401a,
			    "Loop resync scheduled.\n");
			qla2x00_loop_resync(vha);
			clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
			ql_dbg(ql_dbg_dpc, vha, 0x401b,
			    "Loop resync end.\n");
		}
	}

	ql_dbg(ql_dbg_dpc, vha, 0x401c,
	    "Exiting %s.\n", __func__);
	return 0;
}

void
qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
{
	int ret;
	struct qla_hw_data *ha = vha->hw;
	scsi_qla_host_t *vp;
	unsigned long flags = 0;

	if (vha->vp_idx)
		return;
	if (list_empty(&ha->vp_list))
		return;

	clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);

	if (!(ha->current_topology & ISP_CFG_F))
		return;

	spin_lock_irqsave(&ha->vport_slock, flags);
	list_for_each_entry(vp, &ha->vp_list, list) {
		if (vp->vp_idx) {
			atomic_inc(&vp->vref_count);
			spin_unlock_irqrestore(&ha->vport_slock, flags);

			ret = qla2x00_do_dpc_vp(vp);

			spin_lock_irqsave(&ha->vport_slock, flags);
			atomic_dec(&vp->vref_count);
		}
	}
	spin_unlock_irqrestore(&ha->vport_slock, flags);
}

int
qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
{
	scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
	struct qla_hw_data *ha = base_vha->hw;
	scsi_qla_host_t *vha;
	uint8_t port_name[WWN_SIZE];

	if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
		return VPCERR_UNSUPPORTED;

	/* Check up the F/W and H/W support NPIV */
	if (!ha->flags.npiv_supported)
		return VPCERR_UNSUPPORTED;

	/* Check up whether npiv supported switch presented */
	if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
		return VPCERR_NO_FABRIC_SUPP;

	/* Check up unique WWPN */
	u64_to_wwn(fc_vport->port_name, port_name);
	if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
		return VPCERR_BAD_WWN;
	vha = qla24xx_find_vhost_by_name(ha, port_name);
	if (vha)
		return VPCERR_BAD_WWN;

	/* Check up max-npiv-supports */
	if (ha->num_vhosts > ha->max_npiv_vports) {
		ql_dbg(ql_dbg_vport, vha, 0xa004,
		    "num_vhosts %ud is bigger "
		    "than max_npiv_vports %ud.\n",
		    ha->num_vhosts, ha->max_npiv_vports);
		return VPCERR_UNSUPPORTED;
	}
	return 0;
}

scsi_qla_host_t *
qla24xx_create_vhost(struct fc_vport *fc_vport)
{
	scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
	struct qla_hw_data *ha = base_vha->hw;
	scsi_qla_host_t *vha;
	struct scsi_host_template *sht = &qla2xxx_driver_template;
	struct Scsi_Host *host;

	vha = qla2x00_create_host(sht, ha);
	if (!vha) {
		ql_log(ql_log_warn, vha, 0xa005,
		    "scsi_host_alloc() failed for vport.\n");
		return(NULL);
	}

	host = vha->host;
	fc_vport->dd_data = vha;
	/* New host info */
	u64_to_wwn(fc_vport->node_name, vha->node_name);
	u64_to_wwn(fc_vport->port_name, vha->port_name);

	vha->fc_vport = fc_vport;
	vha->device_flags = 0;
	vha->vp_idx = qla24xx_allocate_vp_id(vha);
	if (vha->vp_idx > ha->max_npiv_vports) {
		ql_dbg(ql_dbg_vport, vha, 0xa006,
		    "Couldn't allocate vp_id.\n");
		goto create_vhost_failed;
	}
	vha->mgmt_svr_loop_id = 10 + vha->vp_idx;

	vha->dpc_flags = 0L;

	/*
	 * To fix the issue of processing a parent's RSCN for the vport before
	 * its SCR is complete.
	 */
	set_bit(VP_SCR_NEEDED, &vha->vp_flags);
	atomic_set(&vha->loop_state, LOOP_DOWN);
	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);

	qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);

	vha->req = base_vha->req;
	host->can_queue = base_vha->req->length + 128;
	host->this_id = 255;
	host->cmd_per_lun = 3;
	if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
		host->max_cmd_len = 32;
	else
		host->max_cmd_len = MAX_CMDSZ;
	host->max_channel = MAX_BUSES - 1;
	host->max_lun = ql2xmaxlun;
	host->unique_id = host->host_no;
	host->max_id = MAX_TARGETS_2200;
	host->transportt = qla2xxx_transport_vport_template;

	ql_dbg(ql_dbg_vport, vha, 0xa007,
	    "Detect vport hba %ld at address = %p.\n",
	    vha->host_no, vha);

	vha->flags.init_done = 1;

	mutex_lock(&ha->vport_lock);
	set_bit(vha->vp_idx, ha->vp_idx_map);
	ha->cur_vport_count++;
	mutex_unlock(&ha->vport_lock);

	return vha;

create_vhost_failed:
	return NULL;
}

static void
qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
{
	struct qla_hw_data *ha = vha->hw;
	uint16_t que_id = req->id;

	dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
		sizeof(request_t), req->ring, req->dma);
	req->ring = NULL;
	req->dma = 0;
	if (que_id) {
		ha->req_q_map[que_id] = NULL;
		mutex_lock(&ha->vport_lock);
		clear_bit(que_id, ha->req_qid_map);
		mutex_unlock(&ha->vport_lock);
	}
	kfree(req);
	req = NULL;
}

static void
qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
{
	struct qla_hw_data *ha = vha->hw;
	uint16_t que_id = rsp->id;

	if (rsp->msix && rsp->msix->have_irq) {
		free_irq(rsp->msix->vector, rsp);
		rsp->msix->have_irq = 0;
		rsp->msix->rsp = NULL;
	}
	dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
		sizeof(response_t), rsp->ring, rsp->dma);
	rsp->ring = NULL;
	rsp->dma = 0;
	if (que_id) {
		ha->rsp_q_map[que_id] = NULL;
		mutex_lock(&ha->vport_lock);
		clear_bit(que_id, ha->rsp_qid_map);
		mutex_unlock(&ha->vport_lock);
	}
	kfree(rsp);
	rsp = NULL;
}

int
qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
{
	int ret = -1;

	if (req) {
		req->options |= BIT_0;
		ret = qla25xx_init_req_que(vha, req);
	}
	if (ret == QLA_SUCCESS)
		qla25xx_free_req_que(vha, req);

	return ret;
}

static int
qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
{
	int ret = -1;

	if (rsp) {
		rsp->options |= BIT_0;
		ret = qla25xx_init_rsp_que(vha, rsp);
	}
	if (ret == QLA_SUCCESS)
		qla25xx_free_rsp_que(vha, rsp);

	return ret;
}

/* Delete all queues for a given vhost */
int
qla25xx_delete_queues(struct scsi_qla_host *vha)
{
	int cnt, ret = 0;
	struct req_que *req = NULL;
	struct rsp_que *rsp = NULL;
	struct qla_hw_data *ha = vha->hw;

	/* Delete request queues */
	for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
		req = ha->req_q_map[cnt];
		if (req) {
			ret = qla25xx_delete_req_que(vha, req);
			if (ret != QLA_SUCCESS) {
				ql_log(ql_log_warn, vha, 0x00ea,
				    "Couldn't delete req que %d.\n",
				    req->id);
				return ret;
			}
		}
	}

	/* Delete response queues */
	for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
		rsp = ha->rsp_q_map[cnt];
		if (rsp) {
			ret = qla25xx_delete_rsp_que(vha, rsp);
			if (ret != QLA_SUCCESS) {
				ql_log(ql_log_warn, vha, 0x00eb,
				    "Couldn't delete rsp que %d.\n",
				    rsp->id);
				return ret;
			}
		}
	}
	return ret;
}

int
qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
	uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
{
	int ret = 0;
	struct req_que *req = NULL;
	struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
	uint16_t que_id = 0;
	device_reg_t __iomem *reg;
	uint32_t cnt;

	req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
	if (req == NULL) {
		ql_log(ql_log_fatal, base_vha, 0x00d9,
		    "Failed to allocate memory for request queue.\n");
		goto failed;
	}

	req->length = REQUEST_ENTRY_CNT_24XX;
	req->ring = dma_alloc_coherent(&ha->pdev->dev,
			(req->length + 1) * sizeof(request_t),
			&req->dma, GFP_KERNEL);
	if (req->ring == NULL) {
		ql_log(ql_log_fatal, base_vha, 0x00da,
		    "Failed to allocte memory for request_ring.\n");
		goto que_failed;
	}

	mutex_lock(&ha->vport_lock);
	que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
	if (que_id >= ha->max_req_queues) {
		mutex_unlock(&ha->vport_lock);
		ql_log(ql_log_warn, base_vha, 0x00db,
		    "No resources to create additional request queue.\n");
		goto que_failed;
	}
	set_bit(que_id, ha->req_qid_map);
	ha->req_q_map[que_id] = req;
	req->rid = rid;
	req->vp_idx = vp_idx;
	req->qos = qos;

	ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
	    "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
	    que_id, req->rid, req->vp_idx, req->qos);
	ql_dbg(ql_dbg_init, base_vha, 0x00dc,
	    "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
	    que_id, req->rid, req->vp_idx, req->qos);
	if (rsp_que < 0)
		req->rsp = NULL;
	else
		req->rsp = ha->rsp_q_map[rsp_que];
	/* Use alternate PCI bus number */
	if (MSB(req->rid))
		options |= BIT_4;
	/* Use alternate PCI devfn */
	if (LSB(req->rid))
		options |= BIT_5;
	req->options = options;

	ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
	    "options=0x%x.\n", req->options);
	ql_dbg(ql_dbg_init, base_vha, 0x00dd,
	    "options=0x%x.\n", req->options);
	for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
		req->outstanding_cmds[cnt] = NULL;
	req->current_outstanding_cmd = 1;

	req->ring_ptr = req->ring;
	req->ring_index = 0;
	req->cnt = req->length;
	req->id = que_id;
	reg = ISP_QUE_REG(ha, que_id);
	req->max_q_depth = ha->req_q_map[0]->max_q_depth;
	mutex_unlock(&ha->vport_lock);
	ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
	    "ring_ptr=%p ring_index=%d, "
	    "cnt=%d id=%d max_q_depth=%d.\n",
	    req->ring_ptr, req->ring_index,
	    req->cnt, req->id, req->max_q_depth);
	ql_dbg(ql_dbg_init, base_vha, 0x00de,
	    "ring_ptr=%p ring_index=%d, "
	    "cnt=%d id=%d max_q_depth=%d.\n",
	    req->ring_ptr, req->ring_index, req->cnt,
	    req->id, req->max_q_depth);

	ret = qla25xx_init_req_que(base_vha, req);
	if (ret != QLA_SUCCESS) {
		ql_log(ql_log_fatal, base_vha, 0x00df,
		    "%s failed.\n", __func__);
		mutex_lock(&ha->vport_lock);
		clear_bit(que_id, ha->req_qid_map);
		mutex_unlock(&ha->vport_lock);
		goto que_failed;
	}

	return req->id;

que_failed:
	qla25xx_free_req_que(base_vha, req);
failed:
	return 0;
}

static void qla_do_work(struct work_struct *work)
{
	unsigned long flags;
	struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
	struct scsi_qla_host *vha;
	struct qla_hw_data *ha = rsp->hw;

	spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
	vha = pci_get_drvdata(ha->pdev);
	qla24xx_process_response_queue(vha, rsp);
	spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
}

/* create response queue */
int
qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
	uint8_t vp_idx, uint16_t rid, int req)
{
	int ret = 0;
	struct rsp_que *rsp = NULL;
	struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
	uint16_t que_id = 0;
	device_reg_t __iomem *reg;

	rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
	if (rsp == NULL) {
		ql_log(ql_log_warn, base_vha, 0x0066,
		    "Failed to allocate memory for response queue.\n");
		goto failed;
	}

	rsp->length = RESPONSE_ENTRY_CNT_MQ;
	rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
			(rsp->length + 1) * sizeof(response_t),
			&rsp->dma, GFP_KERNEL);
	if (rsp->ring == NULL) {
		ql_log(ql_log_warn, base_vha, 0x00e1,
		    "Failed to allocate memory for response ring.\n");
		goto que_failed;
	}

	mutex_lock(&ha->vport_lock);
	que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
	if (que_id >= ha->max_rsp_queues) {
		mutex_unlock(&ha->vport_lock);
		ql_log(ql_log_warn, base_vha, 0x00e2,
		    "No resources to create additional request queue.\n");
		goto que_failed;
	}
	set_bit(que_id, ha->rsp_qid_map);

	if (ha->flags.msix_enabled)
		rsp->msix = &ha->msix_entries[que_id + 1];
	else
		ql_log(ql_log_warn, base_vha, 0x00e3,
		    "MSIX not enalbled.\n");

	ha->rsp_q_map[que_id] = rsp;
	rsp->rid = rid;
	rsp->vp_idx = vp_idx;
	rsp->hw = ha;
	ql_dbg(ql_dbg_init, base_vha, 0x00e4,
	    "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
	    que_id, rsp->rid, rsp->vp_idx, rsp->hw);
	/* Use alternate PCI bus number */
	if (MSB(rsp->rid))
		options |= BIT_4;
	/* Use alternate PCI devfn */
	if (LSB(rsp->rid))
		options |= BIT_5;
	/* Enable MSIX handshake mode on for uncapable adapters */
	if (!IS_MSIX_NACK_CAPABLE(ha))
		options |= BIT_6;

	rsp->options = options;
	rsp->id = que_id;
	reg = ISP_QUE_REG(ha, que_id);
	rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
	rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
	mutex_unlock(&ha->vport_lock);
	ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
	    "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
	    rsp->options, rsp->id, rsp->rsp_q_in,
	    rsp->rsp_q_out);
	ql_dbg(ql_dbg_init, base_vha, 0x00e5,
	    "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
	    rsp->options, rsp->id, rsp->rsp_q_in,
	    rsp->rsp_q_out);

	ret = qla25xx_request_irq(rsp);
	if (ret)
		goto que_failed;

	ret = qla25xx_init_rsp_que(base_vha, rsp);
	if (ret != QLA_SUCCESS) {
		ql_log(ql_log_fatal, base_vha, 0x00e7,
		    "%s failed.\n", __func__);
		mutex_lock(&ha->vport_lock);
		clear_bit(que_id, ha->rsp_qid_map);
		mutex_unlock(&ha->vport_lock);
		goto que_failed;
	}
	if (req >= 0)
		rsp->req = ha->req_q_map[req];
	else
		rsp->req = NULL;

	qla2x00_init_response_q_entries(rsp);
	if (rsp->hw->wq)
		INIT_WORK(&rsp->q_work, qla_do_work);
	return rsp->id;

que_failed:
	qla25xx_free_rsp_que(base_vha, rsp);
failed:
	return 0;
}

Privacy Policy