summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/ath/ath11k/pcic.c
blob: debe7c5919ef006ee911c94882c82ea3bcf61548 (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
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
 * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
 * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
 */

#include "core.h"
#include "pcic.h"
#include "debug.h"

static const char *irq_name[ATH11K_IRQ_NUM_MAX] = {
	"bhi",
	"mhi-er0",
	"mhi-er1",
	"ce0",
	"ce1",
	"ce2",
	"ce3",
	"ce4",
	"ce5",
	"ce6",
	"ce7",
	"ce8",
	"ce9",
	"ce10",
	"ce11",
	"host2wbm-desc-feed",
	"host2reo-re-injection",
	"host2reo-command",
	"host2rxdma-monitor-ring3",
	"host2rxdma-monitor-ring2",
	"host2rxdma-monitor-ring1",
	"reo2ost-exception",
	"wbm2host-rx-release",
	"reo2host-status",
	"reo2host-destination-ring4",
	"reo2host-destination-ring3",
	"reo2host-destination-ring2",
	"reo2host-destination-ring1",
	"rxdma2host-monitor-destination-mac3",
	"rxdma2host-monitor-destination-mac2",
	"rxdma2host-monitor-destination-mac1",
	"ppdu-end-interrupts-mac3",
	"ppdu-end-interrupts-mac2",
	"ppdu-end-interrupts-mac1",
	"rxdma2host-monitor-status-ring-mac3",
	"rxdma2host-monitor-status-ring-mac2",
	"rxdma2host-monitor-status-ring-mac1",
	"host2rxdma-host-buf-ring-mac3",
	"host2rxdma-host-buf-ring-mac2",
	"host2rxdma-host-buf-ring-mac1",
	"rxdma2host-destination-ring-mac3",
	"rxdma2host-destination-ring-mac2",
	"rxdma2host-destination-ring-mac1",
	"host2tcl-input-ring4",
	"host2tcl-input-ring3",
	"host2tcl-input-ring2",
	"host2tcl-input-ring1",
	"wbm2host-tx-completions-ring3",
	"wbm2host-tx-completions-ring2",
	"wbm2host-tx-completions-ring1",
	"tcl2host-status-ring",
};

static const struct ath11k_msi_config ath11k_msi_config[] = {
	{
		.total_vectors = 32,
		.total_users = 4,
		.users = (struct ath11k_msi_user[]) {
			{ .name = "MHI", .num_vectors = 3, .base_vector = 0 },
			{ .name = "CE", .num_vectors = 10, .base_vector = 3 },
			{ .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
			{ .name = "DP", .num_vectors = 18, .base_vector = 14 },
		},
		.hw_rev = ATH11K_HW_QCA6390_HW20,
	},
	{
		.total_vectors = 16,
		.total_users = 3,
		.users = (struct ath11k_msi_user[]) {
			{ .name = "MHI", .num_vectors = 3, .base_vector = 0 },
			{ .name = "CE", .num_vectors = 5, .base_vector = 3 },
			{ .name = "DP", .num_vectors = 8, .base_vector = 8 },
		},
		.hw_rev = ATH11K_HW_QCN9074_HW10,
	},
	{
		.total_vectors = 32,
		.total_users = 4,
		.users = (struct ath11k_msi_user[]) {
			{ .name = "MHI", .num_vectors = 3, .base_vector = 0 },
			{ .name = "CE", .num_vectors = 10, .base_vector = 3 },
			{ .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
			{ .name = "DP", .num_vectors = 18, .base_vector = 14 },
		},
		.hw_rev = ATH11K_HW_WCN6855_HW20,
	},
	{
		.total_vectors = 32,
		.total_users = 4,
		.users = (struct ath11k_msi_user[]) {
			{ .name = "MHI", .num_vectors = 3, .base_vector = 0 },
			{ .name = "CE", .num_vectors = 10, .base_vector = 3 },
			{ .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
			{ .name = "DP", .num_vectors = 18, .base_vector = 14 },
		},
		.hw_rev = ATH11K_HW_WCN6855_HW21,
	},
	{
		.total_vectors = 28,
		.total_users = 2,
		.users = (struct ath11k_msi_user[]) {
			{ .name = "CE", .num_vectors = 10, .base_vector = 0 },
			{ .name = "DP", .num_vectors = 18, .base_vector = 10 },
		},
		.hw_rev = ATH11K_HW_WCN6750_HW10,
	},
	{
		.total_vectors = 32,
		.total_users = 4,
		.users = (struct ath11k_msi_user[]) {
			{ .name = "MHI", .num_vectors = 3, .base_vector = 0 },
			{ .name = "CE", .num_vectors = 10, .base_vector = 3 },
			{ .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
			{ .name = "DP", .num_vectors = 18, .base_vector = 14 },
		},
		.hw_rev = ATH11K_HW_QCA2066_HW21,
	},
};

int ath11k_pcic_init_msi_config(struct ath11k_base *ab)
{
	const struct ath11k_msi_config *msi_config;
	int i;

	for (i = 0; i < ARRAY_SIZE(ath11k_msi_config); i++) {
		msi_config = &ath11k_msi_config[i];

		if (msi_config->hw_rev == ab->hw_rev)
			break;
	}

	if (i == ARRAY_SIZE(ath11k_msi_config)) {
		ath11k_err(ab, "failed to fetch msi config, unsupported hw version: 0x%x\n",
			   ab->hw_rev);
		return -EINVAL;
	}

	ab->pci.msi.config = msi_config;
	return 0;
}
EXPORT_SYMBOL(ath11k_pcic_init_msi_config);

static void __ath11k_pcic_write32(struct ath11k_base *ab, u32 offset, u32 value)
{
	if (offset < ATH11K_PCI_WINDOW_START)
		iowrite32(value, ab->mem  + offset);
	else
		ab->pci.ops->window_write32(ab, offset, value);
}

void ath11k_pcic_write32(struct ath11k_base *ab, u32 offset, u32 value)
{
	int ret = 0;
	bool wakeup_required;

	/* for offset beyond BAR + 4K - 32, may
	 * need to wakeup the device to access.
	 */
	wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
			  offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
	if (wakeup_required && ab->pci.ops->wakeup)
		ret = ab->pci.ops->wakeup(ab);

	__ath11k_pcic_write32(ab, offset, value);

	if (wakeup_required && !ret && ab->pci.ops->release)
		ab->pci.ops->release(ab);
}
EXPORT_SYMBOL(ath11k_pcic_write32);

static u32 __ath11k_pcic_read32(struct ath11k_base *ab, u32 offset)
{
	u32 val;

	if (offset < ATH11K_PCI_WINDOW_START)
		val = ioread32(ab->mem + offset);
	else
		val = ab->pci.ops->window_read32(ab, offset);

	return val;
}

u32 ath11k_pcic_read32(struct ath11k_base *ab, u32 offset)
{
	int ret = 0;
	u32 val;
	bool wakeup_required;

	/* for offset beyond BAR + 4K - 32, may
	 * need to wakeup the device to access.
	 */
	wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
			  offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
	if (wakeup_required && ab->pci.ops->wakeup)
		ret = ab->pci.ops->wakeup(ab);

	val = __ath11k_pcic_read32(ab, offset);

	if (wakeup_required && !ret && ab->pci.ops->release)
		ab->pci.ops->release(ab);

	return val;
}
EXPORT_SYMBOL(ath11k_pcic_read32);

int ath11k_pcic_read(struct ath11k_base *ab, void *buf, u32 start, u32 end)
{
	int ret = 0;
	bool wakeup_required;
	u32 *data = buf;
	u32 i;

	/* for offset beyond BAR + 4K - 32, may
	 * need to wakeup the device to access.
	 */
	wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
			  end >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
	if (wakeup_required && ab->pci.ops->wakeup) {
		ret = ab->pci.ops->wakeup(ab);
		if (ret) {
			ath11k_warn(ab,
				    "wakeup failed, data may be invalid: %d",
				    ret);
			/* Even though wakeup() failed, continue processing rather
			 * than returning because some parts of the data may still
			 * be valid and useful in some cases, e.g. could give us
			 * some clues on firmware crash.
			 * Mislead due to invalid data could be avoided because we
			 * are aware of the wakeup failure.
			 */
		}
	}

	for (i = start; i < end + 1; i += 4)
		*data++ = __ath11k_pcic_read32(ab, i);

	if (wakeup_required && ab->pci.ops->release)
		ab->pci.ops->release(ab);

	return 0;
}
EXPORT_SYMBOL(ath11k_pcic_read);

void ath11k_pcic_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
				 u32 *msi_addr_hi)
{
	*msi_addr_lo = ab->pci.msi.addr_lo;
	*msi_addr_hi = ab->pci.msi.addr_hi;
}
EXPORT_SYMBOL(ath11k_pcic_get_msi_address);

int ath11k_pcic_get_user_msi_assignment(struct ath11k_base *ab, char *user_name,
					int *num_vectors, u32 *user_base_data,
					u32 *base_vector)
{
	const struct ath11k_msi_config *msi_config = ab->pci.msi.config;
	int idx;

	for (idx = 0; idx < msi_config->total_users; idx++) {
		if (strcmp(user_name, msi_config->users[idx].name) == 0) {
			*num_vectors = msi_config->users[idx].num_vectors;
			*base_vector =  msi_config->users[idx].base_vector;
			*user_base_data = *base_vector + ab->pci.msi.ep_base_data;

			ath11k_dbg(ab, ATH11K_DBG_PCI,
				   "msi assignment %s num_vectors %d user_base_data %u base_vector %u\n",
				   user_name, *num_vectors, *user_base_data,
				   *base_vector);

			return 0;
		}
	}

	ath11k_err(ab, "Failed to find MSI assignment for %s!\n", user_name);

	return -EINVAL;
}
EXPORT_SYMBOL(ath11k_pcic_get_user_msi_assignment);

void ath11k_pcic_get_ce_msi_idx(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx)
{
	u32 i, msi_data_idx;

	for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
			continue;

		if (ce_id == i)
			break;

		msi_data_idx++;
	}
	*msi_idx = msi_data_idx;
}
EXPORT_SYMBOL(ath11k_pcic_get_ce_msi_idx);

static void ath11k_pcic_free_ext_irq(struct ath11k_base *ab)
{
	int i, j;

	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];

		for (j = 0; j < irq_grp->num_irq; j++)
			free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);

		netif_napi_del(&irq_grp->napi);
		free_netdev(irq_grp->napi_ndev);
	}
}

void ath11k_pcic_free_irq(struct ath11k_base *ab)
{
	int i, irq_idx;

	for (i = 0; i < ab->hw_params.ce_count; i++) {
		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
			continue;
		irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
		free_irq(ab->irq_num[irq_idx], &ab->ce.ce_pipe[i]);
	}

	ath11k_pcic_free_ext_irq(ab);
}
EXPORT_SYMBOL(ath11k_pcic_free_irq);

static void ath11k_pcic_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
{
	u32 irq_idx;

	/* In case of one MSI vector, we handle irq enable/disable in a
	 * uniform way since we only have one irq
	 */
	if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
		return;

	irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
	enable_irq(ab->irq_num[irq_idx]);
}

static void ath11k_pcic_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
{
	u32 irq_idx;

	/* In case of one MSI vector, we handle irq enable/disable in a
	 * uniform way since we only have one irq
	 */
	if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
		return;

	irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
	disable_irq_nosync(ab->irq_num[irq_idx]);
}

static void ath11k_pcic_ce_irqs_disable(struct ath11k_base *ab)
{
	int i;

	clear_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);

	for (i = 0; i < ab->hw_params.ce_count; i++) {
		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
			continue;
		ath11k_pcic_ce_irq_disable(ab, i);
	}
}

static void ath11k_pcic_sync_ce_irqs(struct ath11k_base *ab)
{
	int i;
	int irq_idx;

	for (i = 0; i < ab->hw_params.ce_count; i++) {
		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
			continue;

		irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
		synchronize_irq(ab->irq_num[irq_idx]);
	}
}

static void ath11k_pcic_ce_tasklet(struct tasklet_struct *t)
{
	struct ath11k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
	int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;

	ath11k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);

	enable_irq(ce_pipe->ab->irq_num[irq_idx]);
}

static irqreturn_t ath11k_pcic_ce_interrupt_handler(int irq, void *arg)
{
	struct ath11k_ce_pipe *ce_pipe = arg;
	struct ath11k_base *ab = ce_pipe->ab;
	int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;

	if (!test_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags))
		return IRQ_HANDLED;

	/* last interrupt received for this CE */
	ce_pipe->timestamp = jiffies;

	disable_irq_nosync(ab->irq_num[irq_idx]);

	tasklet_schedule(&ce_pipe->intr_tq);

	return IRQ_HANDLED;
}

static void ath11k_pcic_ext_grp_disable(struct ath11k_ext_irq_grp *irq_grp)
{
	struct ath11k_base *ab = irq_grp->ab;
	int i;

	/* In case of one MSI vector, we handle irq enable/disable
	 * in a uniform way since we only have one irq
	 */
	if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
		return;

	for (i = 0; i < irq_grp->num_irq; i++)
		disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
}

static void __ath11k_pcic_ext_irq_disable(struct ath11k_base *ab)
{
	int i;

	clear_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);

	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];

		ath11k_pcic_ext_grp_disable(irq_grp);

		if (irq_grp->napi_enabled) {
			napi_synchronize(&irq_grp->napi);
			napi_disable(&irq_grp->napi);
			irq_grp->napi_enabled = false;
		}
	}
}

static void ath11k_pcic_ext_grp_enable(struct ath11k_ext_irq_grp *irq_grp)
{
	struct ath11k_base *ab = irq_grp->ab;
	int i;

	/* In case of one MSI vector, we handle irq enable/disable in a
	 * uniform way since we only have one irq
	 */
	if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
		return;

	for (i = 0; i < irq_grp->num_irq; i++)
		enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
}

void ath11k_pcic_ext_irq_enable(struct ath11k_base *ab)
{
	int i;

	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];

		if (!irq_grp->napi_enabled) {
			napi_enable(&irq_grp->napi);
			irq_grp->napi_enabled = true;
		}
		ath11k_pcic_ext_grp_enable(irq_grp);
	}

	set_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
}
EXPORT_SYMBOL(ath11k_pcic_ext_irq_enable);

static void ath11k_pcic_sync_ext_irqs(struct ath11k_base *ab)
{
	int i, j, irq_idx;

	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];

		for (j = 0; j < irq_grp->num_irq; j++) {
			irq_idx = irq_grp->irqs[j];
			synchronize_irq(ab->irq_num[irq_idx]);
		}
	}
}

void ath11k_pcic_ext_irq_disable(struct ath11k_base *ab)
{
	__ath11k_pcic_ext_irq_disable(ab);
	ath11k_pcic_sync_ext_irqs(ab);
}
EXPORT_SYMBOL(ath11k_pcic_ext_irq_disable);

static int ath11k_pcic_ext_grp_napi_poll(struct napi_struct *napi, int budget)
{
	struct ath11k_ext_irq_grp *irq_grp = container_of(napi,
						struct ath11k_ext_irq_grp,
						napi);
	struct ath11k_base *ab = irq_grp->ab;
	int work_done;
	int i;

	work_done = ath11k_dp_service_srng(ab, irq_grp, budget);
	if (work_done < budget) {
		napi_complete_done(napi, work_done);
		for (i = 0; i < irq_grp->num_irq; i++)
			enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
	}

	if (work_done > budget)
		work_done = budget;

	return work_done;
}

static irqreturn_t ath11k_pcic_ext_interrupt_handler(int irq, void *arg)
{
	struct ath11k_ext_irq_grp *irq_grp = arg;
	struct ath11k_base *ab = irq_grp->ab;
	int i;

	if (!test_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags))
		return IRQ_HANDLED;

	ath11k_dbg(irq_grp->ab, ATH11K_DBG_PCI, "ext irq %d\n", irq);

	/* last interrupt received for this group */
	irq_grp->timestamp = jiffies;

	for (i = 0; i < irq_grp->num_irq; i++)
		disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);

	napi_schedule(&irq_grp->napi);

	return IRQ_HANDLED;
}

static int
ath11k_pcic_get_msi_irq(struct ath11k_base *ab, unsigned int vector)
{
	return ab->pci.ops->get_msi_irq(ab, vector);
}

static int ath11k_pcic_ext_irq_config(struct ath11k_base *ab)
{
	int i, j, n, ret, num_vectors = 0;
	u32 user_base_data = 0, base_vector = 0;
	struct ath11k_ext_irq_grp *irq_grp;
	unsigned long irq_flags;

	ret = ath11k_pcic_get_user_msi_assignment(ab, "DP", &num_vectors,
						  &user_base_data,
						  &base_vector);
	if (ret < 0)
		return ret;

	irq_flags = IRQF_SHARED;
	if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
		irq_flags |= IRQF_NOBALANCING;

	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
		irq_grp = &ab->ext_irq_grp[i];
		u32 num_irq = 0;

		irq_grp->ab = ab;
		irq_grp->grp_id = i;
		irq_grp->napi_ndev = alloc_netdev_dummy(0);
		if (!irq_grp->napi_ndev) {
			ret = -ENOMEM;
			goto fail_allocate;
		}

		netif_napi_add(irq_grp->napi_ndev, &irq_grp->napi,
			       ath11k_pcic_ext_grp_napi_poll);

		if (ab->hw_params.ring_mask->tx[i] ||
		    ab->hw_params.ring_mask->rx[i] ||
		    ab->hw_params.ring_mask->rx_err[i] ||
		    ab->hw_params.ring_mask->rx_wbm_rel[i] ||
		    ab->hw_params.ring_mask->reo_status[i] ||
		    ab->hw_params.ring_mask->rxdma2host[i] ||
		    ab->hw_params.ring_mask->host2rxdma[i] ||
		    ab->hw_params.ring_mask->rx_mon_status[i]) {
			num_irq = 1;
		}

		irq_grp->num_irq = num_irq;
		irq_grp->irqs[0] = ATH11K_PCI_IRQ_DP_OFFSET + i;

		for (j = 0; j < irq_grp->num_irq; j++) {
			int irq_idx = irq_grp->irqs[j];
			int vector = (i % num_vectors) + base_vector;
			int irq = ath11k_pcic_get_msi_irq(ab, vector);

			if (irq < 0) {
				ret = irq;
				goto fail_irq;
			}

			ab->irq_num[irq_idx] = irq;

			ath11k_dbg(ab, ATH11K_DBG_PCI,
				   "irq %d group %d\n", irq, i);

			irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
			ret = request_irq(irq, ath11k_pcic_ext_interrupt_handler,
					  irq_flags, "DP_EXT_IRQ", irq_grp);
			if (ret) {
				ath11k_err(ab, "failed request irq %d: %d\n",
					   vector, ret);
				for (n = 0; n <= i; n++) {
					irq_grp = &ab->ext_irq_grp[n];
					free_netdev(irq_grp->napi_ndev);
				}
				return ret;
			}
		}
		ath11k_pcic_ext_grp_disable(irq_grp);
	}

	return 0;
fail_irq:
	/* i ->napi_ndev was properly allocated. Free it also */
	i += 1;
fail_allocate:
	for (n = 0; n < i; n++) {
		irq_grp = &ab->ext_irq_grp[n];
		free_netdev(irq_grp->napi_ndev);
	}
	return ret;
}

int ath11k_pcic_config_irq(struct ath11k_base *ab)
{
	struct ath11k_ce_pipe *ce_pipe;
	u32 msi_data_start;
	u32 msi_data_count, msi_data_idx;
	u32 msi_irq_start;
	unsigned int msi_data;
	int irq, i, ret, irq_idx;
	unsigned long irq_flags;

	ret = ath11k_pcic_get_user_msi_assignment(ab, "CE", &msi_data_count,
						  &msi_data_start, &msi_irq_start);
	if (ret)
		return ret;

	irq_flags = IRQF_SHARED;
	if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
		irq_flags |= IRQF_NOBALANCING;

	/* Configure CE irqs */
	for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
			continue;

		msi_data = (msi_data_idx % msi_data_count) + msi_irq_start;
		irq = ath11k_pcic_get_msi_irq(ab, msi_data);
		if (irq < 0)
			return irq;

		ce_pipe = &ab->ce.ce_pipe[i];

		irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;

		tasklet_setup(&ce_pipe->intr_tq, ath11k_pcic_ce_tasklet);

		ret = request_irq(irq, ath11k_pcic_ce_interrupt_handler,
				  irq_flags, irq_name[irq_idx], ce_pipe);
		if (ret) {
			ath11k_err(ab, "failed to request irq %d: %d\n",
				   irq_idx, ret);
			return ret;
		}

		ab->irq_num[irq_idx] = irq;
		msi_data_idx++;

		ath11k_pcic_ce_irq_disable(ab, i);
	}

	ret = ath11k_pcic_ext_irq_config(ab);
	if (ret)
		return ret;

	return 0;
}
EXPORT_SYMBOL(ath11k_pcic_config_irq);

void ath11k_pcic_ce_irqs_enable(struct ath11k_base *ab)
{
	int i;

	set_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);

	for (i = 0; i < ab->hw_params.ce_count; i++) {
		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
			continue;
		ath11k_pcic_ce_irq_enable(ab, i);
	}
}
EXPORT_SYMBOL(ath11k_pcic_ce_irqs_enable);

static void ath11k_pcic_kill_tasklets(struct ath11k_base *ab)
{
	int i;

	for (i = 0; i < ab->hw_params.ce_count; i++) {
		struct ath11k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];

		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
			continue;

		tasklet_kill(&ce_pipe->intr_tq);
	}
}

void ath11k_pcic_ce_irq_disable_sync(struct ath11k_base *ab)
{
	ath11k_pcic_ce_irqs_disable(ab);
	ath11k_pcic_sync_ce_irqs(ab);
	ath11k_pcic_kill_tasklets(ab);
}
EXPORT_SYMBOL(ath11k_pcic_ce_irq_disable_sync);

void ath11k_pcic_stop(struct ath11k_base *ab)
{
	ath11k_pcic_ce_irq_disable_sync(ab);
	ath11k_ce_cleanup_pipes(ab);
}
EXPORT_SYMBOL(ath11k_pcic_stop);

int ath11k_pcic_start(struct ath11k_base *ab)
{
	set_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags);

	ath11k_pcic_ce_irqs_enable(ab);
	ath11k_ce_rx_post_buf(ab);

	return 0;
}
EXPORT_SYMBOL(ath11k_pcic_start);

int ath11k_pcic_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
				    u8 *ul_pipe, u8 *dl_pipe)
{
	const struct service_to_pipe *entry;
	bool ul_set = false, dl_set = false;
	int i;

	for (i = 0; i < ab->hw_params.svc_to_ce_map_len; i++) {
		entry = &ab->hw_params.svc_to_ce_map[i];

		if (__le32_to_cpu(entry->service_id) != service_id)
			continue;

		switch (__le32_to_cpu(entry->pipedir)) {
		case PIPEDIR_NONE:
			break;
		case PIPEDIR_IN:
			WARN_ON(dl_set);
			*dl_pipe = __le32_to_cpu(entry->pipenum);
			dl_set = true;
			break;
		case PIPEDIR_OUT:
			WARN_ON(ul_set);
			*ul_pipe = __le32_to_cpu(entry->pipenum);
			ul_set = true;
			break;
		case PIPEDIR_INOUT:
			WARN_ON(dl_set);
			WARN_ON(ul_set);
			*dl_pipe = __le32_to_cpu(entry->pipenum);
			*ul_pipe = __le32_to_cpu(entry->pipenum);
			dl_set = true;
			ul_set = true;
			break;
		}
	}

	if (WARN_ON(!ul_set || !dl_set))
		return -ENOENT;

	return 0;
}
EXPORT_SYMBOL(ath11k_pcic_map_service_to_pipe);

int ath11k_pcic_register_pci_ops(struct ath11k_base *ab,
				 const struct ath11k_pci_ops *pci_ops)
{
	if (!pci_ops)
		return 0;

	/* Return error if mandatory pci_ops callbacks are missing */
	if (!pci_ops->get_msi_irq || !pci_ops->window_write32 ||
	    !pci_ops->window_read32)
		return -EINVAL;

	ab->pci.ops = pci_ops;
	return 0;
}
EXPORT_SYMBOL(ath11k_pcic_register_pci_ops);

void ath11k_pci_enable_ce_irqs_except_wake_irq(struct ath11k_base *ab)
{
	int i;

	for (i = 0; i < ab->hw_params.ce_count; i++) {
		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR ||
		    i == ATH11K_PCI_CE_WAKE_IRQ)
			continue;
		ath11k_pcic_ce_irq_enable(ab, i);
	}
}
EXPORT_SYMBOL(ath11k_pci_enable_ce_irqs_except_wake_irq);

void ath11k_pci_disable_ce_irqs_except_wake_irq(struct ath11k_base *ab)
{
	int i;
	int irq_idx;
	struct ath11k_ce_pipe *ce_pipe;

	for (i = 0; i < ab->hw_params.ce_count; i++) {
		ce_pipe = &ab->ce.ce_pipe[i];
		irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;

		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR ||
		    i == ATH11K_PCI_CE_WAKE_IRQ)
			continue;

		disable_irq_nosync(ab->irq_num[irq_idx]);
		synchronize_irq(ab->irq_num[irq_idx]);
		tasklet_kill(&ce_pipe->intr_tq);
	}
}
EXPORT_SYMBOL(ath11k_pci_disable_ce_irqs_except_wake_irq);