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1// SPDX-License-Identifier: BSD-3-Clause-Clear
2/*
3 * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
4 * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
5 */
6
7#include "core.h"
8#include "pcic.h"
9#include "debug.h"
10
11static const char *irq_name[ATH11K_IRQ_NUM_MAX] = {
12 "bhi",
13 "mhi-er0",
14 "mhi-er1",
15 "ce0",
16 "ce1",
17 "ce2",
18 "ce3",
19 "ce4",
20 "ce5",
21 "ce6",
22 "ce7",
23 "ce8",
24 "ce9",
25 "ce10",
26 "ce11",
27 "host2wbm-desc-feed",
28 "host2reo-re-injection",
29 "host2reo-command",
30 "host2rxdma-monitor-ring3",
31 "host2rxdma-monitor-ring2",
32 "host2rxdma-monitor-ring1",
33 "reo2ost-exception",
34 "wbm2host-rx-release",
35 "reo2host-status",
36 "reo2host-destination-ring4",
37 "reo2host-destination-ring3",
38 "reo2host-destination-ring2",
39 "reo2host-destination-ring1",
40 "rxdma2host-monitor-destination-mac3",
41 "rxdma2host-monitor-destination-mac2",
42 "rxdma2host-monitor-destination-mac1",
43 "ppdu-end-interrupts-mac3",
44 "ppdu-end-interrupts-mac2",
45 "ppdu-end-interrupts-mac1",
46 "rxdma2host-monitor-status-ring-mac3",
47 "rxdma2host-monitor-status-ring-mac2",
48 "rxdma2host-monitor-status-ring-mac1",
49 "host2rxdma-host-buf-ring-mac3",
50 "host2rxdma-host-buf-ring-mac2",
51 "host2rxdma-host-buf-ring-mac1",
52 "rxdma2host-destination-ring-mac3",
53 "rxdma2host-destination-ring-mac2",
54 "rxdma2host-destination-ring-mac1",
55 "host2tcl-input-ring4",
56 "host2tcl-input-ring3",
57 "host2tcl-input-ring2",
58 "host2tcl-input-ring1",
59 "wbm2host-tx-completions-ring3",
60 "wbm2host-tx-completions-ring2",
61 "wbm2host-tx-completions-ring1",
62 "tcl2host-status-ring",
63};
64
65static const struct ath11k_msi_config ath11k_msi_config[] = {
66 {
67 .total_vectors = 32,
68 .total_users = 4,
69 .users = (struct ath11k_msi_user[]) {
70 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
71 { .name = "CE", .num_vectors = 10, .base_vector = 3 },
72 { .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
73 { .name = "DP", .num_vectors = 18, .base_vector = 14 },
74 },
75 .hw_rev = ATH11K_HW_QCA6390_HW20,
76 },
77 {
78 .total_vectors = 16,
79 .total_users = 3,
80 .users = (struct ath11k_msi_user[]) {
81 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
82 { .name = "CE", .num_vectors = 5, .base_vector = 3 },
83 { .name = "DP", .num_vectors = 8, .base_vector = 8 },
84 },
85 .hw_rev = ATH11K_HW_QCN9074_HW10,
86 },
87 {
88 .total_vectors = 32,
89 .total_users = 4,
90 .users = (struct ath11k_msi_user[]) {
91 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
92 { .name = "CE", .num_vectors = 10, .base_vector = 3 },
93 { .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
94 { .name = "DP", .num_vectors = 18, .base_vector = 14 },
95 },
96 .hw_rev = ATH11K_HW_WCN6855_HW20,
97 },
98 {
99 .total_vectors = 32,
100 .total_users = 4,
101 .users = (struct ath11k_msi_user[]) {
102 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
103 { .name = "CE", .num_vectors = 10, .base_vector = 3 },
104 { .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
105 { .name = "DP", .num_vectors = 18, .base_vector = 14 },
106 },
107 .hw_rev = ATH11K_HW_WCN6855_HW21,
108 },
109 {
110 .total_vectors = 28,
111 .total_users = 2,
112 .users = (struct ath11k_msi_user[]) {
113 { .name = "CE", .num_vectors = 10, .base_vector = 0 },
114 { .name = "DP", .num_vectors = 18, .base_vector = 10 },
115 },
116 .hw_rev = ATH11K_HW_WCN6750_HW10,
117 },
118};
119
120int ath11k_pcic_init_msi_config(struct ath11k_base *ab)
121{
122 const struct ath11k_msi_config *msi_config;
123 int i;
124
125 for (i = 0; i < ARRAY_SIZE(ath11k_msi_config); i++) {
126 msi_config = &ath11k_msi_config[i];
127
128 if (msi_config->hw_rev == ab->hw_rev)
129 break;
130 }
131
132 if (i == ARRAY_SIZE(ath11k_msi_config)) {
133 ath11k_err(ab, "failed to fetch msi config, unsupported hw version: 0x%x\n",
134 ab->hw_rev);
135 return -EINVAL;
136 }
137
138 ab->pci.msi.config = msi_config;
139 return 0;
140}
141EXPORT_SYMBOL(ath11k_pcic_init_msi_config);
142
143static void __ath11k_pcic_write32(struct ath11k_base *ab, u32 offset, u32 value)
144{
145 if (offset < ATH11K_PCI_WINDOW_START)
146 iowrite32(value, ab->mem + offset);
147 else
148 ab->pci.ops->window_write32(ab, offset, value);
149}
150
151void ath11k_pcic_write32(struct ath11k_base *ab, u32 offset, u32 value)
152{
153 int ret = 0;
154 bool wakeup_required;
155
156 /* for offset beyond BAR + 4K - 32, may
157 * need to wakeup the device to access.
158 */
159 wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
160 offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
161 if (wakeup_required && ab->pci.ops->wakeup)
162 ret = ab->pci.ops->wakeup(ab);
163
164 __ath11k_pcic_write32(ab, offset, value);
165
166 if (wakeup_required && !ret && ab->pci.ops->release)
167 ab->pci.ops->release(ab);
168}
169EXPORT_SYMBOL(ath11k_pcic_write32);
170
171static u32 __ath11k_pcic_read32(struct ath11k_base *ab, u32 offset)
172{
173 u32 val;
174
175 if (offset < ATH11K_PCI_WINDOW_START)
176 val = ioread32(ab->mem + offset);
177 else
178 val = ab->pci.ops->window_read32(ab, offset);
179
180 return val;
181}
182
183u32 ath11k_pcic_read32(struct ath11k_base *ab, u32 offset)
184{
185 int ret = 0;
186 u32 val;
187 bool wakeup_required;
188
189 /* for offset beyond BAR + 4K - 32, may
190 * need to wakeup the device to access.
191 */
192 wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
193 offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
194 if (wakeup_required && ab->pci.ops->wakeup)
195 ret = ab->pci.ops->wakeup(ab);
196
197 val = __ath11k_pcic_read32(ab, offset);
198
199 if (wakeup_required && !ret && ab->pci.ops->release)
200 ab->pci.ops->release(ab);
201
202 return val;
203}
204EXPORT_SYMBOL(ath11k_pcic_read32);
205
206int ath11k_pcic_read(struct ath11k_base *ab, void *buf, u32 start, u32 end)
207{
208 int ret = 0;
209 bool wakeup_required;
210 u32 *data = buf;
211 u32 i;
212
213 /* for offset beyond BAR + 4K - 32, may
214 * need to wakeup the device to access.
215 */
216 wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
217 end >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
218 if (wakeup_required && ab->pci.ops->wakeup) {
219 ret = ab->pci.ops->wakeup(ab);
220 if (ret) {
221 ath11k_warn(ab,
222 "wakeup failed, data may be invalid: %d",
223 ret);
224 /* Even though wakeup() failed, continue processing rather
225 * than returning because some parts of the data may still
226 * be valid and useful in some cases, e.g. could give us
227 * some clues on firmware crash.
228 * Mislead due to invalid data could be avoided because we
229 * are aware of the wakeup failure.
230 */
231 }
232 }
233
234 for (i = start; i < end + 1; i += 4)
235 *data++ = __ath11k_pcic_read32(ab, i);
236
237 if (wakeup_required && ab->pci.ops->release)
238 ab->pci.ops->release(ab);
239
240 return 0;
241}
242EXPORT_SYMBOL(ath11k_pcic_read);
243
244void ath11k_pcic_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
245 u32 *msi_addr_hi)
246{
247 *msi_addr_lo = ab->pci.msi.addr_lo;
248 *msi_addr_hi = ab->pci.msi.addr_hi;
249}
250EXPORT_SYMBOL(ath11k_pcic_get_msi_address);
251
252int ath11k_pcic_get_user_msi_assignment(struct ath11k_base *ab, char *user_name,
253 int *num_vectors, u32 *user_base_data,
254 u32 *base_vector)
255{
256 const struct ath11k_msi_config *msi_config = ab->pci.msi.config;
257 int idx;
258
259 for (idx = 0; idx < msi_config->total_users; idx++) {
260 if (strcmp(user_name, msi_config->users[idx].name) == 0) {
261 *num_vectors = msi_config->users[idx].num_vectors;
262 *base_vector = msi_config->users[idx].base_vector;
263 *user_base_data = *base_vector + ab->pci.msi.ep_base_data;
264
265 ath11k_dbg(ab, ATH11K_DBG_PCI,
266 "msi assignment %s num_vectors %d user_base_data %u base_vector %u\n",
267 user_name, *num_vectors, *user_base_data,
268 *base_vector);
269
270 return 0;
271 }
272 }
273
274 ath11k_err(ab, "Failed to find MSI assignment for %s!\n", user_name);
275
276 return -EINVAL;
277}
278EXPORT_SYMBOL(ath11k_pcic_get_user_msi_assignment);
279
280void ath11k_pcic_get_ce_msi_idx(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx)
281{
282 u32 i, msi_data_idx;
283
284 for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
285 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
286 continue;
287
288 if (ce_id == i)
289 break;
290
291 msi_data_idx++;
292 }
293 *msi_idx = msi_data_idx;
294}
295EXPORT_SYMBOL(ath11k_pcic_get_ce_msi_idx);
296
297static void ath11k_pcic_free_ext_irq(struct ath11k_base *ab)
298{
299 int i, j;
300
301 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
302 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
303
304 for (j = 0; j < irq_grp->num_irq; j++)
305 free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);
306
307 netif_napi_del(&irq_grp->napi);
308 }
309}
310
311void ath11k_pcic_free_irq(struct ath11k_base *ab)
312{
313 int i, irq_idx;
314
315 for (i = 0; i < ab->hw_params.ce_count; i++) {
316 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
317 continue;
318 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
319 free_irq(ab->irq_num[irq_idx], &ab->ce.ce_pipe[i]);
320 }
321
322 ath11k_pcic_free_ext_irq(ab);
323}
324EXPORT_SYMBOL(ath11k_pcic_free_irq);
325
326static void ath11k_pcic_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
327{
328 u32 irq_idx;
329
330 /* In case of one MSI vector, we handle irq enable/disable in a
331 * uniform way since we only have one irq
332 */
333 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
334 return;
335
336 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
337 enable_irq(ab->irq_num[irq_idx]);
338}
339
340static void ath11k_pcic_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
341{
342 u32 irq_idx;
343
344 /* In case of one MSI vector, we handle irq enable/disable in a
345 * uniform way since we only have one irq
346 */
347 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
348 return;
349
350 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
351 disable_irq_nosync(ab->irq_num[irq_idx]);
352}
353
354static void ath11k_pcic_ce_irqs_disable(struct ath11k_base *ab)
355{
356 int i;
357
358 clear_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
359
360 for (i = 0; i < ab->hw_params.ce_count; i++) {
361 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
362 continue;
363 ath11k_pcic_ce_irq_disable(ab, i);
364 }
365}
366
367static void ath11k_pcic_sync_ce_irqs(struct ath11k_base *ab)
368{
369 int i;
370 int irq_idx;
371
372 for (i = 0; i < ab->hw_params.ce_count; i++) {
373 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
374 continue;
375
376 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
377 synchronize_irq(ab->irq_num[irq_idx]);
378 }
379}
380
381static void ath11k_pcic_ce_tasklet(struct tasklet_struct *t)
382{
383 struct ath11k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
384 int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
385
386 ath11k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
387
388 enable_irq(ce_pipe->ab->irq_num[irq_idx]);
389}
390
391static irqreturn_t ath11k_pcic_ce_interrupt_handler(int irq, void *arg)
392{
393 struct ath11k_ce_pipe *ce_pipe = arg;
394 struct ath11k_base *ab = ce_pipe->ab;
395 int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
396
397 if (!test_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags))
398 return IRQ_HANDLED;
399
400 /* last interrupt received for this CE */
401 ce_pipe->timestamp = jiffies;
402
403 disable_irq_nosync(ab->irq_num[irq_idx]);
404
405 tasklet_schedule(&ce_pipe->intr_tq);
406
407 return IRQ_HANDLED;
408}
409
410static void ath11k_pcic_ext_grp_disable(struct ath11k_ext_irq_grp *irq_grp)
411{
412 struct ath11k_base *ab = irq_grp->ab;
413 int i;
414
415 /* In case of one MSI vector, we handle irq enable/disable
416 * in a uniform way since we only have one irq
417 */
418 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
419 return;
420
421 for (i = 0; i < irq_grp->num_irq; i++)
422 disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
423}
424
425static void __ath11k_pcic_ext_irq_disable(struct ath11k_base *ab)
426{
427 int i;
428
429 clear_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
430
431 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
432 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
433
434 ath11k_pcic_ext_grp_disable(irq_grp);
435
436 if (irq_grp->napi_enabled) {
437 napi_synchronize(&irq_grp->napi);
438 napi_disable(&irq_grp->napi);
439 irq_grp->napi_enabled = false;
440 }
441 }
442}
443
444static void ath11k_pcic_ext_grp_enable(struct ath11k_ext_irq_grp *irq_grp)
445{
446 struct ath11k_base *ab = irq_grp->ab;
447 int i;
448
449 /* In case of one MSI vector, we handle irq enable/disable in a
450 * uniform way since we only have one irq
451 */
452 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
453 return;
454
455 for (i = 0; i < irq_grp->num_irq; i++)
456 enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
457}
458
459void ath11k_pcic_ext_irq_enable(struct ath11k_base *ab)
460{
461 int i;
462
463 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
464 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
465
466 if (!irq_grp->napi_enabled) {
467 napi_enable(&irq_grp->napi);
468 irq_grp->napi_enabled = true;
469 }
470 ath11k_pcic_ext_grp_enable(irq_grp);
471 }
472
473 set_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
474}
475EXPORT_SYMBOL(ath11k_pcic_ext_irq_enable);
476
477static void ath11k_pcic_sync_ext_irqs(struct ath11k_base *ab)
478{
479 int i, j, irq_idx;
480
481 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
482 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
483
484 for (j = 0; j < irq_grp->num_irq; j++) {
485 irq_idx = irq_grp->irqs[j];
486 synchronize_irq(ab->irq_num[irq_idx]);
487 }
488 }
489}
490
491void ath11k_pcic_ext_irq_disable(struct ath11k_base *ab)
492{
493 __ath11k_pcic_ext_irq_disable(ab);
494 ath11k_pcic_sync_ext_irqs(ab);
495}
496EXPORT_SYMBOL(ath11k_pcic_ext_irq_disable);
497
498static int ath11k_pcic_ext_grp_napi_poll(struct napi_struct *napi, int budget)
499{
500 struct ath11k_ext_irq_grp *irq_grp = container_of(napi,
501 struct ath11k_ext_irq_grp,
502 napi);
503 struct ath11k_base *ab = irq_grp->ab;
504 int work_done;
505 int i;
506
507 work_done = ath11k_dp_service_srng(ab, irq_grp, budget);
508 if (work_done < budget) {
509 napi_complete_done(napi, work_done);
510 for (i = 0; i < irq_grp->num_irq; i++)
511 enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
512 }
513
514 if (work_done > budget)
515 work_done = budget;
516
517 return work_done;
518}
519
520static irqreturn_t ath11k_pcic_ext_interrupt_handler(int irq, void *arg)
521{
522 struct ath11k_ext_irq_grp *irq_grp = arg;
523 struct ath11k_base *ab = irq_grp->ab;
524 int i;
525
526 if (!test_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags))
527 return IRQ_HANDLED;
528
529 ath11k_dbg(irq_grp->ab, ATH11K_DBG_PCI, "ext irq %d\n", irq);
530
531 /* last interrupt received for this group */
532 irq_grp->timestamp = jiffies;
533
534 for (i = 0; i < irq_grp->num_irq; i++)
535 disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
536
537 napi_schedule(&irq_grp->napi);
538
539 return IRQ_HANDLED;
540}
541
542static int
543ath11k_pcic_get_msi_irq(struct ath11k_base *ab, unsigned int vector)
544{
545 return ab->pci.ops->get_msi_irq(ab, vector);
546}
547
548static int ath11k_pcic_ext_irq_config(struct ath11k_base *ab)
549{
550 int i, j, ret, num_vectors = 0;
551 u32 user_base_data = 0, base_vector = 0;
552 unsigned long irq_flags;
553
554 ret = ath11k_pcic_get_user_msi_assignment(ab, "DP", &num_vectors,
555 &user_base_data,
556 &base_vector);
557 if (ret < 0)
558 return ret;
559
560 irq_flags = IRQF_SHARED;
561 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
562 irq_flags |= IRQF_NOBALANCING;
563
564 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
565 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
566 u32 num_irq = 0;
567
568 irq_grp->ab = ab;
569 irq_grp->grp_id = i;
570 init_dummy_netdev(&irq_grp->napi_ndev);
571 netif_napi_add(&irq_grp->napi_ndev, &irq_grp->napi,
572 ath11k_pcic_ext_grp_napi_poll);
573
574 if (ab->hw_params.ring_mask->tx[i] ||
575 ab->hw_params.ring_mask->rx[i] ||
576 ab->hw_params.ring_mask->rx_err[i] ||
577 ab->hw_params.ring_mask->rx_wbm_rel[i] ||
578 ab->hw_params.ring_mask->reo_status[i] ||
579 ab->hw_params.ring_mask->rxdma2host[i] ||
580 ab->hw_params.ring_mask->host2rxdma[i] ||
581 ab->hw_params.ring_mask->rx_mon_status[i]) {
582 num_irq = 1;
583 }
584
585 irq_grp->num_irq = num_irq;
586 irq_grp->irqs[0] = ATH11K_PCI_IRQ_DP_OFFSET + i;
587
588 for (j = 0; j < irq_grp->num_irq; j++) {
589 int irq_idx = irq_grp->irqs[j];
590 int vector = (i % num_vectors) + base_vector;
591 int irq = ath11k_pcic_get_msi_irq(ab, vector);
592
593 if (irq < 0)
594 return irq;
595
596 ab->irq_num[irq_idx] = irq;
597
598 ath11k_dbg(ab, ATH11K_DBG_PCI,
599 "irq %d group %d\n", irq, i);
600
601 irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
602 ret = request_irq(irq, ath11k_pcic_ext_interrupt_handler,
603 irq_flags, "DP_EXT_IRQ", irq_grp);
604 if (ret) {
605 ath11k_err(ab, "failed request irq %d: %d\n",
606 vector, ret);
607 return ret;
608 }
609 }
610 ath11k_pcic_ext_grp_disable(irq_grp);
611 }
612
613 return 0;
614}
615
616int ath11k_pcic_config_irq(struct ath11k_base *ab)
617{
618 struct ath11k_ce_pipe *ce_pipe;
619 u32 msi_data_start;
620 u32 msi_data_count, msi_data_idx;
621 u32 msi_irq_start;
622 unsigned int msi_data;
623 int irq, i, ret, irq_idx;
624 unsigned long irq_flags;
625
626 ret = ath11k_pcic_get_user_msi_assignment(ab, "CE", &msi_data_count,
627 &msi_data_start, &msi_irq_start);
628 if (ret)
629 return ret;
630
631 irq_flags = IRQF_SHARED;
632 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
633 irq_flags |= IRQF_NOBALANCING;
634
635 /* Configure CE irqs */
636 for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
637 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
638 continue;
639
640 msi_data = (msi_data_idx % msi_data_count) + msi_irq_start;
641 irq = ath11k_pcic_get_msi_irq(ab, msi_data);
642 if (irq < 0)
643 return irq;
644
645 ce_pipe = &ab->ce.ce_pipe[i];
646
647 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
648
649 tasklet_setup(&ce_pipe->intr_tq, ath11k_pcic_ce_tasklet);
650
651 ret = request_irq(irq, ath11k_pcic_ce_interrupt_handler,
652 irq_flags, irq_name[irq_idx], ce_pipe);
653 if (ret) {
654 ath11k_err(ab, "failed to request irq %d: %d\n",
655 irq_idx, ret);
656 return ret;
657 }
658
659 ab->irq_num[irq_idx] = irq;
660 msi_data_idx++;
661
662 ath11k_pcic_ce_irq_disable(ab, i);
663 }
664
665 ret = ath11k_pcic_ext_irq_config(ab);
666 if (ret)
667 return ret;
668
669 return 0;
670}
671EXPORT_SYMBOL(ath11k_pcic_config_irq);
672
673void ath11k_pcic_ce_irqs_enable(struct ath11k_base *ab)
674{
675 int i;
676
677 set_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
678
679 for (i = 0; i < ab->hw_params.ce_count; i++) {
680 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
681 continue;
682 ath11k_pcic_ce_irq_enable(ab, i);
683 }
684}
685EXPORT_SYMBOL(ath11k_pcic_ce_irqs_enable);
686
687static void ath11k_pcic_kill_tasklets(struct ath11k_base *ab)
688{
689 int i;
690
691 for (i = 0; i < ab->hw_params.ce_count; i++) {
692 struct ath11k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
693
694 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
695 continue;
696
697 tasklet_kill(&ce_pipe->intr_tq);
698 }
699}
700
701void ath11k_pcic_ce_irq_disable_sync(struct ath11k_base *ab)
702{
703 ath11k_pcic_ce_irqs_disable(ab);
704 ath11k_pcic_sync_ce_irqs(ab);
705 ath11k_pcic_kill_tasklets(ab);
706}
707EXPORT_SYMBOL(ath11k_pcic_ce_irq_disable_sync);
708
709void ath11k_pcic_stop(struct ath11k_base *ab)
710{
711 ath11k_pcic_ce_irq_disable_sync(ab);
712 ath11k_ce_cleanup_pipes(ab);
713}
714EXPORT_SYMBOL(ath11k_pcic_stop);
715
716int ath11k_pcic_start(struct ath11k_base *ab)
717{
718 set_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags);
719
720 ath11k_pcic_ce_irqs_enable(ab);
721 ath11k_ce_rx_post_buf(ab);
722
723 return 0;
724}
725EXPORT_SYMBOL(ath11k_pcic_start);
726
727int ath11k_pcic_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
728 u8 *ul_pipe, u8 *dl_pipe)
729{
730 const struct service_to_pipe *entry;
731 bool ul_set = false, dl_set = false;
732 int i;
733
734 for (i = 0; i < ab->hw_params.svc_to_ce_map_len; i++) {
735 entry = &ab->hw_params.svc_to_ce_map[i];
736
737 if (__le32_to_cpu(entry->service_id) != service_id)
738 continue;
739
740 switch (__le32_to_cpu(entry->pipedir)) {
741 case PIPEDIR_NONE:
742 break;
743 case PIPEDIR_IN:
744 WARN_ON(dl_set);
745 *dl_pipe = __le32_to_cpu(entry->pipenum);
746 dl_set = true;
747 break;
748 case PIPEDIR_OUT:
749 WARN_ON(ul_set);
750 *ul_pipe = __le32_to_cpu(entry->pipenum);
751 ul_set = true;
752 break;
753 case PIPEDIR_INOUT:
754 WARN_ON(dl_set);
755 WARN_ON(ul_set);
756 *dl_pipe = __le32_to_cpu(entry->pipenum);
757 *ul_pipe = __le32_to_cpu(entry->pipenum);
758 dl_set = true;
759 ul_set = true;
760 break;
761 }
762 }
763
764 if (WARN_ON(!ul_set || !dl_set))
765 return -ENOENT;
766
767 return 0;
768}
769EXPORT_SYMBOL(ath11k_pcic_map_service_to_pipe);
770
771int ath11k_pcic_register_pci_ops(struct ath11k_base *ab,
772 const struct ath11k_pci_ops *pci_ops)
773{
774 if (!pci_ops)
775 return 0;
776
777 /* Return error if mandatory pci_ops callbacks are missing */
778 if (!pci_ops->get_msi_irq || !pci_ops->window_write32 ||
779 !pci_ops->window_read32)
780 return -EINVAL;
781
782 ab->pci.ops = pci_ops;
783 return 0;
784}
785EXPORT_SYMBOL(ath11k_pcic_register_pci_ops);
786
787void ath11k_pci_enable_ce_irqs_except_wake_irq(struct ath11k_base *ab)
788{
789 int i;
790
791 for (i = 0; i < ab->hw_params.ce_count; i++) {
792 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR ||
793 i == ATH11K_PCI_CE_WAKE_IRQ)
794 continue;
795 ath11k_pcic_ce_irq_enable(ab, i);
796 }
797}
798EXPORT_SYMBOL(ath11k_pci_enable_ce_irqs_except_wake_irq);
799
800void ath11k_pci_disable_ce_irqs_except_wake_irq(struct ath11k_base *ab)
801{
802 int i;
803 int irq_idx;
804 struct ath11k_ce_pipe *ce_pipe;
805
806 for (i = 0; i < ab->hw_params.ce_count; i++) {
807 ce_pipe = &ab->ce.ce_pipe[i];
808 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
809
810 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR ||
811 i == ATH11K_PCI_CE_WAKE_IRQ)
812 continue;
813
814 disable_irq_nosync(ab->irq_num[irq_idx]);
815 synchronize_irq(ab->irq_num[irq_idx]);
816 tasklet_kill(&ce_pipe->intr_tq);
817 }
818}
819EXPORT_SYMBOL(ath11k_pci_disable_ce_irqs_except_wake_irq);
1// SPDX-License-Identifier: BSD-3-Clause-Clear
2/*
3 * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
4 * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
5 */
6
7#include "core.h"
8#include "pcic.h"
9#include "debug.h"
10
11static const char *irq_name[ATH11K_IRQ_NUM_MAX] = {
12 "bhi",
13 "mhi-er0",
14 "mhi-er1",
15 "ce0",
16 "ce1",
17 "ce2",
18 "ce3",
19 "ce4",
20 "ce5",
21 "ce6",
22 "ce7",
23 "ce8",
24 "ce9",
25 "ce10",
26 "ce11",
27 "host2wbm-desc-feed",
28 "host2reo-re-injection",
29 "host2reo-command",
30 "host2rxdma-monitor-ring3",
31 "host2rxdma-monitor-ring2",
32 "host2rxdma-monitor-ring1",
33 "reo2ost-exception",
34 "wbm2host-rx-release",
35 "reo2host-status",
36 "reo2host-destination-ring4",
37 "reo2host-destination-ring3",
38 "reo2host-destination-ring2",
39 "reo2host-destination-ring1",
40 "rxdma2host-monitor-destination-mac3",
41 "rxdma2host-monitor-destination-mac2",
42 "rxdma2host-monitor-destination-mac1",
43 "ppdu-end-interrupts-mac3",
44 "ppdu-end-interrupts-mac2",
45 "ppdu-end-interrupts-mac1",
46 "rxdma2host-monitor-status-ring-mac3",
47 "rxdma2host-monitor-status-ring-mac2",
48 "rxdma2host-monitor-status-ring-mac1",
49 "host2rxdma-host-buf-ring-mac3",
50 "host2rxdma-host-buf-ring-mac2",
51 "host2rxdma-host-buf-ring-mac1",
52 "rxdma2host-destination-ring-mac3",
53 "rxdma2host-destination-ring-mac2",
54 "rxdma2host-destination-ring-mac1",
55 "host2tcl-input-ring4",
56 "host2tcl-input-ring3",
57 "host2tcl-input-ring2",
58 "host2tcl-input-ring1",
59 "wbm2host-tx-completions-ring3",
60 "wbm2host-tx-completions-ring2",
61 "wbm2host-tx-completions-ring1",
62 "tcl2host-status-ring",
63};
64
65static const struct ath11k_msi_config ath11k_msi_config[] = {
66 {
67 .total_vectors = 32,
68 .total_users = 4,
69 .users = (struct ath11k_msi_user[]) {
70 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
71 { .name = "CE", .num_vectors = 10, .base_vector = 3 },
72 { .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
73 { .name = "DP", .num_vectors = 18, .base_vector = 14 },
74 },
75 .hw_rev = ATH11K_HW_QCA6390_HW20,
76 },
77 {
78 .total_vectors = 16,
79 .total_users = 3,
80 .users = (struct ath11k_msi_user[]) {
81 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
82 { .name = "CE", .num_vectors = 5, .base_vector = 3 },
83 { .name = "DP", .num_vectors = 8, .base_vector = 8 },
84 },
85 .hw_rev = ATH11K_HW_QCN9074_HW10,
86 },
87 {
88 .total_vectors = 32,
89 .total_users = 4,
90 .users = (struct ath11k_msi_user[]) {
91 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
92 { .name = "CE", .num_vectors = 10, .base_vector = 3 },
93 { .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
94 { .name = "DP", .num_vectors = 18, .base_vector = 14 },
95 },
96 .hw_rev = ATH11K_HW_WCN6855_HW20,
97 },
98 {
99 .total_vectors = 32,
100 .total_users = 4,
101 .users = (struct ath11k_msi_user[]) {
102 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
103 { .name = "CE", .num_vectors = 10, .base_vector = 3 },
104 { .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
105 { .name = "DP", .num_vectors = 18, .base_vector = 14 },
106 },
107 .hw_rev = ATH11K_HW_WCN6855_HW21,
108 },
109 {
110 .total_vectors = 28,
111 .total_users = 2,
112 .users = (struct ath11k_msi_user[]) {
113 { .name = "CE", .num_vectors = 10, .base_vector = 0 },
114 { .name = "DP", .num_vectors = 18, .base_vector = 10 },
115 },
116 .hw_rev = ATH11K_HW_WCN6750_HW10,
117 },
118 {
119 .total_vectors = 32,
120 .total_users = 4,
121 .users = (struct ath11k_msi_user[]) {
122 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
123 { .name = "CE", .num_vectors = 10, .base_vector = 3 },
124 { .name = "WAKE", .num_vectors = 1, .base_vector = 13 },
125 { .name = "DP", .num_vectors = 18, .base_vector = 14 },
126 },
127 .hw_rev = ATH11K_HW_QCA2066_HW21,
128 },
129};
130
131int ath11k_pcic_init_msi_config(struct ath11k_base *ab)
132{
133 const struct ath11k_msi_config *msi_config;
134 int i;
135
136 for (i = 0; i < ARRAY_SIZE(ath11k_msi_config); i++) {
137 msi_config = &ath11k_msi_config[i];
138
139 if (msi_config->hw_rev == ab->hw_rev)
140 break;
141 }
142
143 if (i == ARRAY_SIZE(ath11k_msi_config)) {
144 ath11k_err(ab, "failed to fetch msi config, unsupported hw version: 0x%x\n",
145 ab->hw_rev);
146 return -EINVAL;
147 }
148
149 ab->pci.msi.config = msi_config;
150 return 0;
151}
152EXPORT_SYMBOL(ath11k_pcic_init_msi_config);
153
154static void __ath11k_pcic_write32(struct ath11k_base *ab, u32 offset, u32 value)
155{
156 if (offset < ATH11K_PCI_WINDOW_START)
157 iowrite32(value, ab->mem + offset);
158 else
159 ab->pci.ops->window_write32(ab, offset, value);
160}
161
162void ath11k_pcic_write32(struct ath11k_base *ab, u32 offset, u32 value)
163{
164 int ret = 0;
165 bool wakeup_required;
166
167 /* for offset beyond BAR + 4K - 32, may
168 * need to wakeup the device to access.
169 */
170 wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
171 offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
172 if (wakeup_required && ab->pci.ops->wakeup)
173 ret = ab->pci.ops->wakeup(ab);
174
175 __ath11k_pcic_write32(ab, offset, value);
176
177 if (wakeup_required && !ret && ab->pci.ops->release)
178 ab->pci.ops->release(ab);
179}
180EXPORT_SYMBOL(ath11k_pcic_write32);
181
182static u32 __ath11k_pcic_read32(struct ath11k_base *ab, u32 offset)
183{
184 u32 val;
185
186 if (offset < ATH11K_PCI_WINDOW_START)
187 val = ioread32(ab->mem + offset);
188 else
189 val = ab->pci.ops->window_read32(ab, offset);
190
191 return val;
192}
193
194u32 ath11k_pcic_read32(struct ath11k_base *ab, u32 offset)
195{
196 int ret = 0;
197 u32 val;
198 bool wakeup_required;
199
200 /* for offset beyond BAR + 4K - 32, may
201 * need to wakeup the device to access.
202 */
203 wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
204 offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
205 if (wakeup_required && ab->pci.ops->wakeup)
206 ret = ab->pci.ops->wakeup(ab);
207
208 val = __ath11k_pcic_read32(ab, offset);
209
210 if (wakeup_required && !ret && ab->pci.ops->release)
211 ab->pci.ops->release(ab);
212
213 return val;
214}
215EXPORT_SYMBOL(ath11k_pcic_read32);
216
217int ath11k_pcic_read(struct ath11k_base *ab, void *buf, u32 start, u32 end)
218{
219 int ret = 0;
220 bool wakeup_required;
221 u32 *data = buf;
222 u32 i;
223
224 /* for offset beyond BAR + 4K - 32, may
225 * need to wakeup the device to access.
226 */
227 wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) &&
228 end >= ATH11K_PCI_ACCESS_ALWAYS_OFF;
229 if (wakeup_required && ab->pci.ops->wakeup) {
230 ret = ab->pci.ops->wakeup(ab);
231 if (ret) {
232 ath11k_warn(ab,
233 "wakeup failed, data may be invalid: %d",
234 ret);
235 /* Even though wakeup() failed, continue processing rather
236 * than returning because some parts of the data may still
237 * be valid and useful in some cases, e.g. could give us
238 * some clues on firmware crash.
239 * Mislead due to invalid data could be avoided because we
240 * are aware of the wakeup failure.
241 */
242 }
243 }
244
245 for (i = start; i < end + 1; i += 4)
246 *data++ = __ath11k_pcic_read32(ab, i);
247
248 if (wakeup_required && ab->pci.ops->release)
249 ab->pci.ops->release(ab);
250
251 return 0;
252}
253EXPORT_SYMBOL(ath11k_pcic_read);
254
255void ath11k_pcic_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
256 u32 *msi_addr_hi)
257{
258 *msi_addr_lo = ab->pci.msi.addr_lo;
259 *msi_addr_hi = ab->pci.msi.addr_hi;
260}
261EXPORT_SYMBOL(ath11k_pcic_get_msi_address);
262
263int ath11k_pcic_get_user_msi_assignment(struct ath11k_base *ab, char *user_name,
264 int *num_vectors, u32 *user_base_data,
265 u32 *base_vector)
266{
267 const struct ath11k_msi_config *msi_config = ab->pci.msi.config;
268 int idx;
269
270 for (idx = 0; idx < msi_config->total_users; idx++) {
271 if (strcmp(user_name, msi_config->users[idx].name) == 0) {
272 *num_vectors = msi_config->users[idx].num_vectors;
273 *base_vector = msi_config->users[idx].base_vector;
274 *user_base_data = *base_vector + ab->pci.msi.ep_base_data;
275
276 ath11k_dbg(ab, ATH11K_DBG_PCI,
277 "msi assignment %s num_vectors %d user_base_data %u base_vector %u\n",
278 user_name, *num_vectors, *user_base_data,
279 *base_vector);
280
281 return 0;
282 }
283 }
284
285 ath11k_err(ab, "Failed to find MSI assignment for %s!\n", user_name);
286
287 return -EINVAL;
288}
289EXPORT_SYMBOL(ath11k_pcic_get_user_msi_assignment);
290
291void ath11k_pcic_get_ce_msi_idx(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx)
292{
293 u32 i, msi_data_idx;
294
295 for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
296 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
297 continue;
298
299 if (ce_id == i)
300 break;
301
302 msi_data_idx++;
303 }
304 *msi_idx = msi_data_idx;
305}
306EXPORT_SYMBOL(ath11k_pcic_get_ce_msi_idx);
307
308static void ath11k_pcic_free_ext_irq(struct ath11k_base *ab)
309{
310 int i, j;
311
312 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
313 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
314
315 for (j = 0; j < irq_grp->num_irq; j++)
316 free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);
317
318 netif_napi_del(&irq_grp->napi);
319 free_netdev(irq_grp->napi_ndev);
320 }
321}
322
323void ath11k_pcic_free_irq(struct ath11k_base *ab)
324{
325 int i, irq_idx;
326
327 for (i = 0; i < ab->hw_params.ce_count; i++) {
328 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
329 continue;
330 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
331 free_irq(ab->irq_num[irq_idx], &ab->ce.ce_pipe[i]);
332 }
333
334 ath11k_pcic_free_ext_irq(ab);
335}
336EXPORT_SYMBOL(ath11k_pcic_free_irq);
337
338static void ath11k_pcic_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
339{
340 u32 irq_idx;
341
342 /* In case of one MSI vector, we handle irq enable/disable in a
343 * uniform way since we only have one irq
344 */
345 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
346 return;
347
348 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
349 enable_irq(ab->irq_num[irq_idx]);
350}
351
352static void ath11k_pcic_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
353{
354 u32 irq_idx;
355
356 /* In case of one MSI vector, we handle irq enable/disable in a
357 * uniform way since we only have one irq
358 */
359 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
360 return;
361
362 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
363 disable_irq_nosync(ab->irq_num[irq_idx]);
364}
365
366static void ath11k_pcic_ce_irqs_disable(struct ath11k_base *ab)
367{
368 int i;
369
370 clear_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
371
372 for (i = 0; i < ab->hw_params.ce_count; i++) {
373 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
374 continue;
375 ath11k_pcic_ce_irq_disable(ab, i);
376 }
377}
378
379static void ath11k_pcic_sync_ce_irqs(struct ath11k_base *ab)
380{
381 int i;
382 int irq_idx;
383
384 for (i = 0; i < ab->hw_params.ce_count; i++) {
385 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
386 continue;
387
388 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
389 synchronize_irq(ab->irq_num[irq_idx]);
390 }
391}
392
393static void ath11k_pcic_ce_tasklet(struct tasklet_struct *t)
394{
395 struct ath11k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
396 int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
397
398 ath11k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
399
400 enable_irq(ce_pipe->ab->irq_num[irq_idx]);
401}
402
403static irqreturn_t ath11k_pcic_ce_interrupt_handler(int irq, void *arg)
404{
405 struct ath11k_ce_pipe *ce_pipe = arg;
406 struct ath11k_base *ab = ce_pipe->ab;
407 int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
408
409 if (!test_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags))
410 return IRQ_HANDLED;
411
412 /* last interrupt received for this CE */
413 ce_pipe->timestamp = jiffies;
414
415 disable_irq_nosync(ab->irq_num[irq_idx]);
416
417 tasklet_schedule(&ce_pipe->intr_tq);
418
419 return IRQ_HANDLED;
420}
421
422static void ath11k_pcic_ext_grp_disable(struct ath11k_ext_irq_grp *irq_grp)
423{
424 struct ath11k_base *ab = irq_grp->ab;
425 int i;
426
427 /* In case of one MSI vector, we handle irq enable/disable
428 * in a uniform way since we only have one irq
429 */
430 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
431 return;
432
433 for (i = 0; i < irq_grp->num_irq; i++)
434 disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
435}
436
437static void __ath11k_pcic_ext_irq_disable(struct ath11k_base *ab)
438{
439 int i;
440
441 clear_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
442
443 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
444 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
445
446 ath11k_pcic_ext_grp_disable(irq_grp);
447
448 if (irq_grp->napi_enabled) {
449 napi_synchronize(&irq_grp->napi);
450 napi_disable(&irq_grp->napi);
451 irq_grp->napi_enabled = false;
452 }
453 }
454}
455
456static void ath11k_pcic_ext_grp_enable(struct ath11k_ext_irq_grp *irq_grp)
457{
458 struct ath11k_base *ab = irq_grp->ab;
459 int i;
460
461 /* In case of one MSI vector, we handle irq enable/disable in a
462 * uniform way since we only have one irq
463 */
464 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
465 return;
466
467 for (i = 0; i < irq_grp->num_irq; i++)
468 enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
469}
470
471void ath11k_pcic_ext_irq_enable(struct ath11k_base *ab)
472{
473 int i;
474
475 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
476 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
477
478 if (!irq_grp->napi_enabled) {
479 napi_enable(&irq_grp->napi);
480 irq_grp->napi_enabled = true;
481 }
482 ath11k_pcic_ext_grp_enable(irq_grp);
483 }
484
485 set_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
486}
487EXPORT_SYMBOL(ath11k_pcic_ext_irq_enable);
488
489static void ath11k_pcic_sync_ext_irqs(struct ath11k_base *ab)
490{
491 int i, j, irq_idx;
492
493 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
494 struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
495
496 for (j = 0; j < irq_grp->num_irq; j++) {
497 irq_idx = irq_grp->irqs[j];
498 synchronize_irq(ab->irq_num[irq_idx]);
499 }
500 }
501}
502
503void ath11k_pcic_ext_irq_disable(struct ath11k_base *ab)
504{
505 __ath11k_pcic_ext_irq_disable(ab);
506 ath11k_pcic_sync_ext_irqs(ab);
507}
508EXPORT_SYMBOL(ath11k_pcic_ext_irq_disable);
509
510static int ath11k_pcic_ext_grp_napi_poll(struct napi_struct *napi, int budget)
511{
512 struct ath11k_ext_irq_grp *irq_grp = container_of(napi,
513 struct ath11k_ext_irq_grp,
514 napi);
515 struct ath11k_base *ab = irq_grp->ab;
516 int work_done;
517 int i;
518
519 work_done = ath11k_dp_service_srng(ab, irq_grp, budget);
520 if (work_done < budget) {
521 napi_complete_done(napi, work_done);
522 for (i = 0; i < irq_grp->num_irq; i++)
523 enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
524 }
525
526 if (work_done > budget)
527 work_done = budget;
528
529 return work_done;
530}
531
532static irqreturn_t ath11k_pcic_ext_interrupt_handler(int irq, void *arg)
533{
534 struct ath11k_ext_irq_grp *irq_grp = arg;
535 struct ath11k_base *ab = irq_grp->ab;
536 int i;
537
538 if (!test_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags))
539 return IRQ_HANDLED;
540
541 ath11k_dbg(irq_grp->ab, ATH11K_DBG_PCI, "ext irq %d\n", irq);
542
543 /* last interrupt received for this group */
544 irq_grp->timestamp = jiffies;
545
546 for (i = 0; i < irq_grp->num_irq; i++)
547 disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
548
549 napi_schedule(&irq_grp->napi);
550
551 return IRQ_HANDLED;
552}
553
554static int
555ath11k_pcic_get_msi_irq(struct ath11k_base *ab, unsigned int vector)
556{
557 return ab->pci.ops->get_msi_irq(ab, vector);
558}
559
560static int ath11k_pcic_ext_irq_config(struct ath11k_base *ab)
561{
562 int i, j, n, ret, num_vectors = 0;
563 u32 user_base_data = 0, base_vector = 0;
564 struct ath11k_ext_irq_grp *irq_grp;
565 unsigned long irq_flags;
566
567 ret = ath11k_pcic_get_user_msi_assignment(ab, "DP", &num_vectors,
568 &user_base_data,
569 &base_vector);
570 if (ret < 0)
571 return ret;
572
573 irq_flags = IRQF_SHARED;
574 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
575 irq_flags |= IRQF_NOBALANCING;
576
577 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
578 irq_grp = &ab->ext_irq_grp[i];
579 u32 num_irq = 0;
580
581 irq_grp->ab = ab;
582 irq_grp->grp_id = i;
583 irq_grp->napi_ndev = alloc_netdev_dummy(0);
584 if (!irq_grp->napi_ndev) {
585 ret = -ENOMEM;
586 goto fail_allocate;
587 }
588
589 netif_napi_add(irq_grp->napi_ndev, &irq_grp->napi,
590 ath11k_pcic_ext_grp_napi_poll);
591
592 if (ab->hw_params.ring_mask->tx[i] ||
593 ab->hw_params.ring_mask->rx[i] ||
594 ab->hw_params.ring_mask->rx_err[i] ||
595 ab->hw_params.ring_mask->rx_wbm_rel[i] ||
596 ab->hw_params.ring_mask->reo_status[i] ||
597 ab->hw_params.ring_mask->rxdma2host[i] ||
598 ab->hw_params.ring_mask->host2rxdma[i] ||
599 ab->hw_params.ring_mask->rx_mon_status[i]) {
600 num_irq = 1;
601 }
602
603 irq_grp->num_irq = num_irq;
604 irq_grp->irqs[0] = ATH11K_PCI_IRQ_DP_OFFSET + i;
605
606 for (j = 0; j < irq_grp->num_irq; j++) {
607 int irq_idx = irq_grp->irqs[j];
608 int vector = (i % num_vectors) + base_vector;
609 int irq = ath11k_pcic_get_msi_irq(ab, vector);
610
611 if (irq < 0) {
612 ret = irq;
613 goto fail_irq;
614 }
615
616 ab->irq_num[irq_idx] = irq;
617
618 ath11k_dbg(ab, ATH11K_DBG_PCI,
619 "irq %d group %d\n", irq, i);
620
621 irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
622 ret = request_irq(irq, ath11k_pcic_ext_interrupt_handler,
623 irq_flags, "DP_EXT_IRQ", irq_grp);
624 if (ret) {
625 ath11k_err(ab, "failed request irq %d: %d\n",
626 vector, ret);
627 for (n = 0; n <= i; n++) {
628 irq_grp = &ab->ext_irq_grp[n];
629 free_netdev(irq_grp->napi_ndev);
630 }
631 return ret;
632 }
633 }
634 ath11k_pcic_ext_grp_disable(irq_grp);
635 }
636
637 return 0;
638fail_irq:
639 /* i ->napi_ndev was properly allocated. Free it also */
640 i += 1;
641fail_allocate:
642 for (n = 0; n < i; n++) {
643 irq_grp = &ab->ext_irq_grp[n];
644 free_netdev(irq_grp->napi_ndev);
645 }
646 return ret;
647}
648
649int ath11k_pcic_config_irq(struct ath11k_base *ab)
650{
651 struct ath11k_ce_pipe *ce_pipe;
652 u32 msi_data_start;
653 u32 msi_data_count, msi_data_idx;
654 u32 msi_irq_start;
655 unsigned int msi_data;
656 int irq, i, ret, irq_idx;
657 unsigned long irq_flags;
658
659 ret = ath11k_pcic_get_user_msi_assignment(ab, "CE", &msi_data_count,
660 &msi_data_start, &msi_irq_start);
661 if (ret)
662 return ret;
663
664 irq_flags = IRQF_SHARED;
665 if (!test_bit(ATH11K_FLAG_MULTI_MSI_VECTORS, &ab->dev_flags))
666 irq_flags |= IRQF_NOBALANCING;
667
668 /* Configure CE irqs */
669 for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
670 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
671 continue;
672
673 msi_data = (msi_data_idx % msi_data_count) + msi_irq_start;
674 irq = ath11k_pcic_get_msi_irq(ab, msi_data);
675 if (irq < 0)
676 return irq;
677
678 ce_pipe = &ab->ce.ce_pipe[i];
679
680 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
681
682 tasklet_setup(&ce_pipe->intr_tq, ath11k_pcic_ce_tasklet);
683
684 ret = request_irq(irq, ath11k_pcic_ce_interrupt_handler,
685 irq_flags, irq_name[irq_idx], ce_pipe);
686 if (ret) {
687 ath11k_err(ab, "failed to request irq %d: %d\n",
688 irq_idx, ret);
689 return ret;
690 }
691
692 ab->irq_num[irq_idx] = irq;
693 msi_data_idx++;
694
695 ath11k_pcic_ce_irq_disable(ab, i);
696 }
697
698 ret = ath11k_pcic_ext_irq_config(ab);
699 if (ret)
700 return ret;
701
702 return 0;
703}
704EXPORT_SYMBOL(ath11k_pcic_config_irq);
705
706void ath11k_pcic_ce_irqs_enable(struct ath11k_base *ab)
707{
708 int i;
709
710 set_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
711
712 for (i = 0; i < ab->hw_params.ce_count; i++) {
713 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
714 continue;
715 ath11k_pcic_ce_irq_enable(ab, i);
716 }
717}
718EXPORT_SYMBOL(ath11k_pcic_ce_irqs_enable);
719
720static void ath11k_pcic_kill_tasklets(struct ath11k_base *ab)
721{
722 int i;
723
724 for (i = 0; i < ab->hw_params.ce_count; i++) {
725 struct ath11k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
726
727 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
728 continue;
729
730 tasklet_kill(&ce_pipe->intr_tq);
731 }
732}
733
734void ath11k_pcic_ce_irq_disable_sync(struct ath11k_base *ab)
735{
736 ath11k_pcic_ce_irqs_disable(ab);
737 ath11k_pcic_sync_ce_irqs(ab);
738 ath11k_pcic_kill_tasklets(ab);
739}
740EXPORT_SYMBOL(ath11k_pcic_ce_irq_disable_sync);
741
742void ath11k_pcic_stop(struct ath11k_base *ab)
743{
744 ath11k_pcic_ce_irq_disable_sync(ab);
745 ath11k_ce_cleanup_pipes(ab);
746}
747EXPORT_SYMBOL(ath11k_pcic_stop);
748
749int ath11k_pcic_start(struct ath11k_base *ab)
750{
751 set_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags);
752
753 ath11k_pcic_ce_irqs_enable(ab);
754 ath11k_ce_rx_post_buf(ab);
755
756 return 0;
757}
758EXPORT_SYMBOL(ath11k_pcic_start);
759
760int ath11k_pcic_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
761 u8 *ul_pipe, u8 *dl_pipe)
762{
763 const struct service_to_pipe *entry;
764 bool ul_set = false, dl_set = false;
765 int i;
766
767 for (i = 0; i < ab->hw_params.svc_to_ce_map_len; i++) {
768 entry = &ab->hw_params.svc_to_ce_map[i];
769
770 if (__le32_to_cpu(entry->service_id) != service_id)
771 continue;
772
773 switch (__le32_to_cpu(entry->pipedir)) {
774 case PIPEDIR_NONE:
775 break;
776 case PIPEDIR_IN:
777 WARN_ON(dl_set);
778 *dl_pipe = __le32_to_cpu(entry->pipenum);
779 dl_set = true;
780 break;
781 case PIPEDIR_OUT:
782 WARN_ON(ul_set);
783 *ul_pipe = __le32_to_cpu(entry->pipenum);
784 ul_set = true;
785 break;
786 case PIPEDIR_INOUT:
787 WARN_ON(dl_set);
788 WARN_ON(ul_set);
789 *dl_pipe = __le32_to_cpu(entry->pipenum);
790 *ul_pipe = __le32_to_cpu(entry->pipenum);
791 dl_set = true;
792 ul_set = true;
793 break;
794 }
795 }
796
797 if (WARN_ON(!ul_set || !dl_set))
798 return -ENOENT;
799
800 return 0;
801}
802EXPORT_SYMBOL(ath11k_pcic_map_service_to_pipe);
803
804int ath11k_pcic_register_pci_ops(struct ath11k_base *ab,
805 const struct ath11k_pci_ops *pci_ops)
806{
807 if (!pci_ops)
808 return 0;
809
810 /* Return error if mandatory pci_ops callbacks are missing */
811 if (!pci_ops->get_msi_irq || !pci_ops->window_write32 ||
812 !pci_ops->window_read32)
813 return -EINVAL;
814
815 ab->pci.ops = pci_ops;
816 return 0;
817}
818EXPORT_SYMBOL(ath11k_pcic_register_pci_ops);
819
820void ath11k_pci_enable_ce_irqs_except_wake_irq(struct ath11k_base *ab)
821{
822 int i;
823
824 for (i = 0; i < ab->hw_params.ce_count; i++) {
825 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR ||
826 i == ATH11K_PCI_CE_WAKE_IRQ)
827 continue;
828 ath11k_pcic_ce_irq_enable(ab, i);
829 }
830}
831EXPORT_SYMBOL(ath11k_pci_enable_ce_irqs_except_wake_irq);
832
833void ath11k_pci_disable_ce_irqs_except_wake_irq(struct ath11k_base *ab)
834{
835 int i;
836 int irq_idx;
837 struct ath11k_ce_pipe *ce_pipe;
838
839 for (i = 0; i < ab->hw_params.ce_count; i++) {
840 ce_pipe = &ab->ce.ce_pipe[i];
841 irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
842
843 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR ||
844 i == ATH11K_PCI_CE_WAKE_IRQ)
845 continue;
846
847 disable_irq_nosync(ab->irq_num[irq_idx]);
848 synchronize_irq(ab->irq_num[irq_idx]);
849 tasklet_kill(&ce_pipe->intr_tq);
850 }
851}
852EXPORT_SYMBOL(ath11k_pci_disable_ce_irqs_except_wake_irq);