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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 <linux/module.h>
8#include <linux/msi.h>
9#include <linux/pci.h>
10
11#include "pci.h"
12#include "core.h"
13#include "hif.h"
14#include "mhi.h"
15#include "debug.h"
16
17#define ATH12K_PCI_BAR_NUM 0
18#define ATH12K_PCI_DMA_MASK 32
19
20#define ATH12K_PCI_IRQ_CE0_OFFSET 3
21
22#define WINDOW_ENABLE_BIT 0x40000000
23#define WINDOW_REG_ADDRESS 0x310c
24#define WINDOW_VALUE_MASK GENMASK(24, 19)
25#define WINDOW_START 0x80000
26#define WINDOW_RANGE_MASK GENMASK(18, 0)
27#define WINDOW_STATIC_MASK GENMASK(31, 6)
28
29#define TCSR_SOC_HW_VERSION 0x1B00000
30#define TCSR_SOC_HW_VERSION_MAJOR_MASK GENMASK(11, 8)
31#define TCSR_SOC_HW_VERSION_MINOR_MASK GENMASK(7, 4)
32
33/* BAR0 + 4k is always accessible, and no
34 * need to force wakeup.
35 * 4K - 32 = 0xFE0
36 */
37#define ACCESS_ALWAYS_OFF 0xFE0
38
39#define QCN9274_DEVICE_ID 0x1109
40#define WCN7850_DEVICE_ID 0x1107
41
42static const struct pci_device_id ath12k_pci_id_table[] = {
43 { PCI_VDEVICE(QCOM, QCN9274_DEVICE_ID) },
44 { PCI_VDEVICE(QCOM, WCN7850_DEVICE_ID) },
45 {0}
46};
47
48MODULE_DEVICE_TABLE(pci, ath12k_pci_id_table);
49
50/* TODO: revisit IRQ mapping for new SRNG's */
51static const struct ath12k_msi_config ath12k_msi_config[] = {
52 {
53 .total_vectors = 16,
54 .total_users = 3,
55 .users = (struct ath12k_msi_user[]) {
56 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
57 { .name = "CE", .num_vectors = 5, .base_vector = 3 },
58 { .name = "DP", .num_vectors = 8, .base_vector = 8 },
59 },
60 },
61};
62
63static const struct ath12k_msi_config msi_config_one_msi = {
64 .total_vectors = 1,
65 .total_users = 4,
66 .users = (struct ath12k_msi_user[]) {
67 { .name = "MHI", .num_vectors = 3, .base_vector = 0 },
68 { .name = "CE", .num_vectors = 1, .base_vector = 0 },
69 { .name = "WAKE", .num_vectors = 1, .base_vector = 0 },
70 { .name = "DP", .num_vectors = 1, .base_vector = 0 },
71 },
72};
73
74static const char *irq_name[ATH12K_IRQ_NUM_MAX] = {
75 "bhi",
76 "mhi-er0",
77 "mhi-er1",
78 "ce0",
79 "ce1",
80 "ce2",
81 "ce3",
82 "ce4",
83 "ce5",
84 "ce6",
85 "ce7",
86 "ce8",
87 "ce9",
88 "ce10",
89 "ce11",
90 "ce12",
91 "ce13",
92 "ce14",
93 "ce15",
94 "host2wbm-desc-feed",
95 "host2reo-re-injection",
96 "host2reo-command",
97 "host2rxdma-monitor-ring3",
98 "host2rxdma-monitor-ring2",
99 "host2rxdma-monitor-ring1",
100 "reo2ost-exception",
101 "wbm2host-rx-release",
102 "reo2host-status",
103 "reo2host-destination-ring4",
104 "reo2host-destination-ring3",
105 "reo2host-destination-ring2",
106 "reo2host-destination-ring1",
107 "rxdma2host-monitor-destination-mac3",
108 "rxdma2host-monitor-destination-mac2",
109 "rxdma2host-monitor-destination-mac1",
110 "ppdu-end-interrupts-mac3",
111 "ppdu-end-interrupts-mac2",
112 "ppdu-end-interrupts-mac1",
113 "rxdma2host-monitor-status-ring-mac3",
114 "rxdma2host-monitor-status-ring-mac2",
115 "rxdma2host-monitor-status-ring-mac1",
116 "host2rxdma-host-buf-ring-mac3",
117 "host2rxdma-host-buf-ring-mac2",
118 "host2rxdma-host-buf-ring-mac1",
119 "rxdma2host-destination-ring-mac3",
120 "rxdma2host-destination-ring-mac2",
121 "rxdma2host-destination-ring-mac1",
122 "host2tcl-input-ring4",
123 "host2tcl-input-ring3",
124 "host2tcl-input-ring2",
125 "host2tcl-input-ring1",
126 "wbm2host-tx-completions-ring4",
127 "wbm2host-tx-completions-ring3",
128 "wbm2host-tx-completions-ring2",
129 "wbm2host-tx-completions-ring1",
130 "tcl2host-status-ring",
131};
132
133static int ath12k_pci_bus_wake_up(struct ath12k_base *ab)
134{
135 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
136
137 return mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
138}
139
140static void ath12k_pci_bus_release(struct ath12k_base *ab)
141{
142 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
143
144 mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
145}
146
147static const struct ath12k_pci_ops ath12k_pci_ops_qcn9274 = {
148 .wakeup = NULL,
149 .release = NULL,
150};
151
152static const struct ath12k_pci_ops ath12k_pci_ops_wcn7850 = {
153 .wakeup = ath12k_pci_bus_wake_up,
154 .release = ath12k_pci_bus_release,
155};
156
157static void ath12k_pci_select_window(struct ath12k_pci *ab_pci, u32 offset)
158{
159 struct ath12k_base *ab = ab_pci->ab;
160
161 u32 window = u32_get_bits(offset, WINDOW_VALUE_MASK);
162 u32 static_window;
163
164 lockdep_assert_held(&ab_pci->window_lock);
165
166 /* Preserve the static window configuration and reset only dynamic window */
167 static_window = ab_pci->register_window & WINDOW_STATIC_MASK;
168 window |= static_window;
169
170 if (window != ab_pci->register_window) {
171 iowrite32(WINDOW_ENABLE_BIT | window,
172 ab->mem + WINDOW_REG_ADDRESS);
173 ioread32(ab->mem + WINDOW_REG_ADDRESS);
174 ab_pci->register_window = window;
175 }
176}
177
178static void ath12k_pci_select_static_window(struct ath12k_pci *ab_pci)
179{
180 u32 umac_window = u32_get_bits(HAL_SEQ_WCSS_UMAC_OFFSET, WINDOW_VALUE_MASK);
181 u32 ce_window = u32_get_bits(HAL_CE_WFSS_CE_REG_BASE, WINDOW_VALUE_MASK);
182 u32 window;
183
184 window = (umac_window << 12) | (ce_window << 6);
185
186 spin_lock_bh(&ab_pci->window_lock);
187 ab_pci->register_window = window;
188 spin_unlock_bh(&ab_pci->window_lock);
189
190 iowrite32(WINDOW_ENABLE_BIT | window, ab_pci->ab->mem + WINDOW_REG_ADDRESS);
191}
192
193static u32 ath12k_pci_get_window_start(struct ath12k_base *ab,
194 u32 offset)
195{
196 u32 window_start;
197
198 /* If offset lies within DP register range, use 3rd window */
199 if ((offset ^ HAL_SEQ_WCSS_UMAC_OFFSET) < WINDOW_RANGE_MASK)
200 window_start = 3 * WINDOW_START;
201 /* If offset lies within CE register range, use 2nd window */
202 else if ((offset ^ HAL_CE_WFSS_CE_REG_BASE) < WINDOW_RANGE_MASK)
203 window_start = 2 * WINDOW_START;
204 /* If offset lies within PCI_BAR_WINDOW0_BASE and within PCI_SOC_PCI_REG_BASE
205 * use 0th window
206 */
207 else if (((offset ^ PCI_BAR_WINDOW0_BASE) < WINDOW_RANGE_MASK) &&
208 !((offset ^ PCI_SOC_PCI_REG_BASE) < PCI_SOC_RANGE_MASK))
209 window_start = 0;
210 else
211 window_start = WINDOW_START;
212
213 return window_start;
214}
215
216static void ath12k_pci_soc_global_reset(struct ath12k_base *ab)
217{
218 u32 val, delay;
219
220 val = ath12k_pci_read32(ab, PCIE_SOC_GLOBAL_RESET);
221
222 val |= PCIE_SOC_GLOBAL_RESET_V;
223
224 ath12k_pci_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
225
226 /* TODO: exact time to sleep is uncertain */
227 delay = 10;
228 mdelay(delay);
229
230 /* Need to toggle V bit back otherwise stuck in reset status */
231 val &= ~PCIE_SOC_GLOBAL_RESET_V;
232
233 ath12k_pci_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
234
235 mdelay(delay);
236
237 val = ath12k_pci_read32(ab, PCIE_SOC_GLOBAL_RESET);
238 if (val == 0xffffffff)
239 ath12k_warn(ab, "link down error during global reset\n");
240}
241
242static void ath12k_pci_clear_dbg_registers(struct ath12k_base *ab)
243{
244 u32 val;
245
246 /* read cookie */
247 val = ath12k_pci_read32(ab, PCIE_Q6_COOKIE_ADDR);
248 ath12k_dbg(ab, ATH12K_DBG_PCI, "cookie:0x%x\n", val);
249
250 val = ath12k_pci_read32(ab, WLAON_WARM_SW_ENTRY);
251 ath12k_dbg(ab, ATH12K_DBG_PCI, "WLAON_WARM_SW_ENTRY 0x%x\n", val);
252
253 /* TODO: exact time to sleep is uncertain */
254 mdelay(10);
255
256 /* write 0 to WLAON_WARM_SW_ENTRY to prevent Q6 from
257 * continuing warm path and entering dead loop.
258 */
259 ath12k_pci_write32(ab, WLAON_WARM_SW_ENTRY, 0);
260 mdelay(10);
261
262 val = ath12k_pci_read32(ab, WLAON_WARM_SW_ENTRY);
263 ath12k_dbg(ab, ATH12K_DBG_PCI, "WLAON_WARM_SW_ENTRY 0x%x\n", val);
264
265 /* A read clear register. clear the register to prevent
266 * Q6 from entering wrong code path.
267 */
268 val = ath12k_pci_read32(ab, WLAON_SOC_RESET_CAUSE_REG);
269 ath12k_dbg(ab, ATH12K_DBG_PCI, "soc reset cause:%d\n", val);
270}
271
272static void ath12k_pci_enable_ltssm(struct ath12k_base *ab)
273{
274 u32 val;
275 int i;
276
277 val = ath12k_pci_read32(ab, PCIE_PCIE_PARF_LTSSM);
278
279 /* PCIE link seems very unstable after the Hot Reset*/
280 for (i = 0; val != PARM_LTSSM_VALUE && i < 5; i++) {
281 if (val == 0xffffffff)
282 mdelay(5);
283
284 ath12k_pci_write32(ab, PCIE_PCIE_PARF_LTSSM, PARM_LTSSM_VALUE);
285 val = ath12k_pci_read32(ab, PCIE_PCIE_PARF_LTSSM);
286 }
287
288 ath12k_dbg(ab, ATH12K_DBG_PCI, "pci ltssm 0x%x\n", val);
289
290 val = ath12k_pci_read32(ab, GCC_GCC_PCIE_HOT_RST);
291 val |= GCC_GCC_PCIE_HOT_RST_VAL;
292 ath12k_pci_write32(ab, GCC_GCC_PCIE_HOT_RST, val);
293 val = ath12k_pci_read32(ab, GCC_GCC_PCIE_HOT_RST);
294
295 ath12k_dbg(ab, ATH12K_DBG_PCI, "pci pcie_hot_rst 0x%x\n", val);
296
297 mdelay(5);
298}
299
300static void ath12k_pci_clear_all_intrs(struct ath12k_base *ab)
301{
302 /* This is a WAR for PCIE Hotreset.
303 * When target receive Hotreset, but will set the interrupt.
304 * So when download SBL again, SBL will open Interrupt and
305 * receive it, and crash immediately.
306 */
307 ath12k_pci_write32(ab, PCIE_PCIE_INT_ALL_CLEAR, PCIE_INT_CLEAR_ALL);
308}
309
310static void ath12k_pci_set_wlaon_pwr_ctrl(struct ath12k_base *ab)
311{
312 u32 val;
313
314 val = ath12k_pci_read32(ab, WLAON_QFPROM_PWR_CTRL_REG);
315 val &= ~QFPROM_PWR_CTRL_VDD4BLOW_MASK;
316 ath12k_pci_write32(ab, WLAON_QFPROM_PWR_CTRL_REG, val);
317}
318
319static void ath12k_pci_force_wake(struct ath12k_base *ab)
320{
321 ath12k_pci_write32(ab, PCIE_SOC_WAKE_PCIE_LOCAL_REG, 1);
322 mdelay(5);
323}
324
325static void ath12k_pci_sw_reset(struct ath12k_base *ab, bool power_on)
326{
327 if (power_on) {
328 ath12k_pci_enable_ltssm(ab);
329 ath12k_pci_clear_all_intrs(ab);
330 ath12k_pci_set_wlaon_pwr_ctrl(ab);
331 }
332
333 ath12k_mhi_clear_vector(ab);
334 ath12k_pci_clear_dbg_registers(ab);
335 ath12k_pci_soc_global_reset(ab);
336 ath12k_mhi_set_mhictrl_reset(ab);
337}
338
339static void ath12k_pci_free_ext_irq(struct ath12k_base *ab)
340{
341 int i, j;
342
343 for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
344 struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
345
346 for (j = 0; j < irq_grp->num_irq; j++)
347 free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);
348
349 netif_napi_del(&irq_grp->napi);
350 }
351}
352
353static void ath12k_pci_free_irq(struct ath12k_base *ab)
354{
355 int i, irq_idx;
356
357 for (i = 0; i < ab->hw_params->ce_count; i++) {
358 if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
359 continue;
360 irq_idx = ATH12K_PCI_IRQ_CE0_OFFSET + i;
361 free_irq(ab->irq_num[irq_idx], &ab->ce.ce_pipe[i]);
362 }
363
364 ath12k_pci_free_ext_irq(ab);
365}
366
367static void ath12k_pci_ce_irq_enable(struct ath12k_base *ab, u16 ce_id)
368{
369 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
370 u32 irq_idx;
371
372 /* In case of one MSI vector, we handle irq enable/disable in a
373 * uniform way since we only have one irq
374 */
375 if (!test_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
376 return;
377
378 irq_idx = ATH12K_PCI_IRQ_CE0_OFFSET + ce_id;
379 enable_irq(ab->irq_num[irq_idx]);
380}
381
382static void ath12k_pci_ce_irq_disable(struct ath12k_base *ab, u16 ce_id)
383{
384 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
385 u32 irq_idx;
386
387 /* In case of one MSI vector, we handle irq enable/disable in a
388 * uniform way since we only have one irq
389 */
390 if (!test_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
391 return;
392
393 irq_idx = ATH12K_PCI_IRQ_CE0_OFFSET + ce_id;
394 disable_irq_nosync(ab->irq_num[irq_idx]);
395}
396
397static void ath12k_pci_ce_irqs_disable(struct ath12k_base *ab)
398{
399 int i;
400
401 clear_bit(ATH12K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
402
403 for (i = 0; i < ab->hw_params->ce_count; i++) {
404 if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
405 continue;
406 ath12k_pci_ce_irq_disable(ab, i);
407 }
408}
409
410static void ath12k_pci_sync_ce_irqs(struct ath12k_base *ab)
411{
412 int i;
413 int irq_idx;
414
415 for (i = 0; i < ab->hw_params->ce_count; i++) {
416 if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
417 continue;
418
419 irq_idx = ATH12K_PCI_IRQ_CE0_OFFSET + i;
420 synchronize_irq(ab->irq_num[irq_idx]);
421 }
422}
423
424static void ath12k_pci_ce_tasklet(struct tasklet_struct *t)
425{
426 struct ath12k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
427 int irq_idx = ATH12K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
428
429 ath12k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
430
431 enable_irq(ce_pipe->ab->irq_num[irq_idx]);
432}
433
434static irqreturn_t ath12k_pci_ce_interrupt_handler(int irq, void *arg)
435{
436 struct ath12k_ce_pipe *ce_pipe = arg;
437 struct ath12k_base *ab = ce_pipe->ab;
438 int irq_idx = ATH12K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
439
440 if (!test_bit(ATH12K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags))
441 return IRQ_HANDLED;
442
443 /* last interrupt received for this CE */
444 ce_pipe->timestamp = jiffies;
445
446 disable_irq_nosync(ab->irq_num[irq_idx]);
447
448 tasklet_schedule(&ce_pipe->intr_tq);
449
450 return IRQ_HANDLED;
451}
452
453static void ath12k_pci_ext_grp_disable(struct ath12k_ext_irq_grp *irq_grp)
454{
455 struct ath12k_pci *ab_pci = ath12k_pci_priv(irq_grp->ab);
456 int i;
457
458 /* In case of one MSI vector, we handle irq enable/disable
459 * in a uniform way since we only have one irq
460 */
461 if (!test_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
462 return;
463
464 for (i = 0; i < irq_grp->num_irq; i++)
465 disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
466}
467
468static void __ath12k_pci_ext_irq_disable(struct ath12k_base *ab)
469{
470 int i;
471
472 clear_bit(ATH12K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
473
474 for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
475 struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
476
477 ath12k_pci_ext_grp_disable(irq_grp);
478
479 napi_synchronize(&irq_grp->napi);
480 napi_disable(&irq_grp->napi);
481 }
482}
483
484static void ath12k_pci_ext_grp_enable(struct ath12k_ext_irq_grp *irq_grp)
485{
486 struct ath12k_pci *ab_pci = ath12k_pci_priv(irq_grp->ab);
487 int i;
488
489 /* In case of one MSI vector, we handle irq enable/disable in a
490 * uniform way since we only have one irq
491 */
492 if (!test_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
493 return;
494
495 for (i = 0; i < irq_grp->num_irq; i++)
496 enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
497}
498
499static void ath12k_pci_sync_ext_irqs(struct ath12k_base *ab)
500{
501 int i, j, irq_idx;
502
503 for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
504 struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
505
506 for (j = 0; j < irq_grp->num_irq; j++) {
507 irq_idx = irq_grp->irqs[j];
508 synchronize_irq(ab->irq_num[irq_idx]);
509 }
510 }
511}
512
513static int ath12k_pci_ext_grp_napi_poll(struct napi_struct *napi, int budget)
514{
515 struct ath12k_ext_irq_grp *irq_grp = container_of(napi,
516 struct ath12k_ext_irq_grp,
517 napi);
518 struct ath12k_base *ab = irq_grp->ab;
519 int work_done;
520 int i;
521
522 work_done = ath12k_dp_service_srng(ab, irq_grp, budget);
523 if (work_done < budget) {
524 napi_complete_done(napi, work_done);
525 for (i = 0; i < irq_grp->num_irq; i++)
526 enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
527 }
528
529 if (work_done > budget)
530 work_done = budget;
531
532 return work_done;
533}
534
535static irqreturn_t ath12k_pci_ext_interrupt_handler(int irq, void *arg)
536{
537 struct ath12k_ext_irq_grp *irq_grp = arg;
538 struct ath12k_base *ab = irq_grp->ab;
539 int i;
540
541 if (!test_bit(ATH12K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags))
542 return IRQ_HANDLED;
543
544 ath12k_dbg(irq_grp->ab, ATH12K_DBG_PCI, "ext irq:%d\n", irq);
545
546 /* last interrupt received for this group */
547 irq_grp->timestamp = jiffies;
548
549 for (i = 0; i < irq_grp->num_irq; i++)
550 disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
551
552 napi_schedule(&irq_grp->napi);
553
554 return IRQ_HANDLED;
555}
556
557static int ath12k_pci_ext_irq_config(struct ath12k_base *ab)
558{
559 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
560 int i, j, ret, num_vectors = 0;
561 u32 user_base_data = 0, base_vector = 0, base_idx;
562
563 base_idx = ATH12K_PCI_IRQ_CE0_OFFSET + CE_COUNT_MAX;
564 ret = ath12k_pci_get_user_msi_assignment(ab, "DP",
565 &num_vectors,
566 &user_base_data,
567 &base_vector);
568 if (ret < 0)
569 return ret;
570
571 for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
572 struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
573 u32 num_irq = 0;
574
575 irq_grp->ab = ab;
576 irq_grp->grp_id = i;
577 init_dummy_netdev(&irq_grp->napi_ndev);
578 netif_napi_add(&irq_grp->napi_ndev, &irq_grp->napi,
579 ath12k_pci_ext_grp_napi_poll);
580
581 if (ab->hw_params->ring_mask->tx[i] ||
582 ab->hw_params->ring_mask->rx[i] ||
583 ab->hw_params->ring_mask->rx_err[i] ||
584 ab->hw_params->ring_mask->rx_wbm_rel[i] ||
585 ab->hw_params->ring_mask->reo_status[i] ||
586 ab->hw_params->ring_mask->host2rxdma[i] ||
587 ab->hw_params->ring_mask->rx_mon_dest[i]) {
588 num_irq = 1;
589 }
590
591 irq_grp->num_irq = num_irq;
592 irq_grp->irqs[0] = base_idx + i;
593
594 for (j = 0; j < irq_grp->num_irq; j++) {
595 int irq_idx = irq_grp->irqs[j];
596 int vector = (i % num_vectors) + base_vector;
597 int irq = ath12k_pci_get_msi_irq(ab->dev, vector);
598
599 ab->irq_num[irq_idx] = irq;
600
601 ath12k_dbg(ab, ATH12K_DBG_PCI,
602 "irq:%d group:%d\n", irq, i);
603
604 irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
605 ret = request_irq(irq, ath12k_pci_ext_interrupt_handler,
606 ab_pci->irq_flags,
607 "DP_EXT_IRQ", irq_grp);
608 if (ret) {
609 ath12k_err(ab, "failed request irq %d: %d\n",
610 vector, ret);
611 return ret;
612 }
613 }
614 ath12k_pci_ext_grp_disable(irq_grp);
615 }
616
617 return 0;
618}
619
620static int ath12k_pci_set_irq_affinity_hint(struct ath12k_pci *ab_pci,
621 const struct cpumask *m)
622{
623 if (test_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
624 return 0;
625
626 return irq_set_affinity_hint(ab_pci->pdev->irq, m);
627}
628
629static int ath12k_pci_config_irq(struct ath12k_base *ab)
630{
631 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
632 struct ath12k_ce_pipe *ce_pipe;
633 u32 msi_data_start;
634 u32 msi_data_count, msi_data_idx;
635 u32 msi_irq_start;
636 unsigned int msi_data;
637 int irq, i, ret, irq_idx;
638
639 ret = ath12k_pci_get_user_msi_assignment(ab,
640 "CE", &msi_data_count,
641 &msi_data_start, &msi_irq_start);
642 if (ret)
643 return ret;
644
645 /* Configure CE irqs */
646
647 for (i = 0, msi_data_idx = 0; i < ab->hw_params->ce_count; i++) {
648 if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
649 continue;
650
651 msi_data = (msi_data_idx % msi_data_count) + msi_irq_start;
652 irq = ath12k_pci_get_msi_irq(ab->dev, msi_data);
653 ce_pipe = &ab->ce.ce_pipe[i];
654
655 irq_idx = ATH12K_PCI_IRQ_CE0_OFFSET + i;
656
657 tasklet_setup(&ce_pipe->intr_tq, ath12k_pci_ce_tasklet);
658
659 ret = request_irq(irq, ath12k_pci_ce_interrupt_handler,
660 ab_pci->irq_flags, irq_name[irq_idx],
661 ce_pipe);
662 if (ret) {
663 ath12k_err(ab, "failed to request irq %d: %d\n",
664 irq_idx, ret);
665 return ret;
666 }
667
668 ab->irq_num[irq_idx] = irq;
669 msi_data_idx++;
670
671 ath12k_pci_ce_irq_disable(ab, i);
672 }
673
674 ret = ath12k_pci_ext_irq_config(ab);
675 if (ret)
676 return ret;
677
678 return 0;
679}
680
681static void ath12k_pci_init_qmi_ce_config(struct ath12k_base *ab)
682{
683 struct ath12k_qmi_ce_cfg *cfg = &ab->qmi.ce_cfg;
684
685 cfg->tgt_ce = ab->hw_params->target_ce_config;
686 cfg->tgt_ce_len = ab->hw_params->target_ce_count;
687
688 cfg->svc_to_ce_map = ab->hw_params->svc_to_ce_map;
689 cfg->svc_to_ce_map_len = ab->hw_params->svc_to_ce_map_len;
690 ab->qmi.service_ins_id = ab->hw_params->qmi_service_ins_id;
691}
692
693static void ath12k_pci_ce_irqs_enable(struct ath12k_base *ab)
694{
695 int i;
696
697 set_bit(ATH12K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
698
699 for (i = 0; i < ab->hw_params->ce_count; i++) {
700 if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
701 continue;
702 ath12k_pci_ce_irq_enable(ab, i);
703 }
704}
705
706static void ath12k_pci_msi_config(struct ath12k_pci *ab_pci, bool enable)
707{
708 struct pci_dev *dev = ab_pci->pdev;
709 u16 control;
710
711 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
712
713 if (enable)
714 control |= PCI_MSI_FLAGS_ENABLE;
715 else
716 control &= ~PCI_MSI_FLAGS_ENABLE;
717
718 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
719}
720
721static void ath12k_pci_msi_enable(struct ath12k_pci *ab_pci)
722{
723 ath12k_pci_msi_config(ab_pci, true);
724}
725
726static void ath12k_pci_msi_disable(struct ath12k_pci *ab_pci)
727{
728 ath12k_pci_msi_config(ab_pci, false);
729}
730
731static int ath12k_pci_msi_alloc(struct ath12k_pci *ab_pci)
732{
733 struct ath12k_base *ab = ab_pci->ab;
734 const struct ath12k_msi_config *msi_config = ab_pci->msi_config;
735 struct msi_desc *msi_desc;
736 int num_vectors;
737 int ret;
738
739 num_vectors = pci_alloc_irq_vectors(ab_pci->pdev,
740 msi_config->total_vectors,
741 msi_config->total_vectors,
742 PCI_IRQ_MSI);
743
744 if (num_vectors == msi_config->total_vectors) {
745 set_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags);
746 ab_pci->irq_flags = IRQF_SHARED;
747 } else {
748 num_vectors = pci_alloc_irq_vectors(ab_pci->pdev,
749 1,
750 1,
751 PCI_IRQ_MSI);
752 if (num_vectors < 0) {
753 ret = -EINVAL;
754 goto reset_msi_config;
755 }
756 clear_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags);
757 ab_pci->msi_config = &msi_config_one_msi;
758 ab_pci->irq_flags = IRQF_SHARED | IRQF_NOBALANCING;
759 ath12k_dbg(ab, ATH12K_DBG_PCI, "request MSI one vector\n");
760 }
761
762 ath12k_info(ab, "MSI vectors: %d\n", num_vectors);
763
764 ath12k_pci_msi_disable(ab_pci);
765
766 msi_desc = irq_get_msi_desc(ab_pci->pdev->irq);
767 if (!msi_desc) {
768 ath12k_err(ab, "msi_desc is NULL!\n");
769 ret = -EINVAL;
770 goto free_msi_vector;
771 }
772
773 ab_pci->msi_ep_base_data = msi_desc->msg.data;
774 if (msi_desc->pci.msi_attrib.is_64)
775 set_bit(ATH12K_PCI_FLAG_IS_MSI_64, &ab_pci->flags);
776
777 ath12k_dbg(ab, ATH12K_DBG_PCI, "msi base data is %d\n", ab_pci->msi_ep_base_data);
778
779 return 0;
780
781free_msi_vector:
782 pci_free_irq_vectors(ab_pci->pdev);
783
784reset_msi_config:
785 return ret;
786}
787
788static void ath12k_pci_msi_free(struct ath12k_pci *ab_pci)
789{
790 pci_free_irq_vectors(ab_pci->pdev);
791}
792
793static int ath12k_pci_config_msi_data(struct ath12k_pci *ab_pci)
794{
795 struct msi_desc *msi_desc;
796
797 msi_desc = irq_get_msi_desc(ab_pci->pdev->irq);
798 if (!msi_desc) {
799 ath12k_err(ab_pci->ab, "msi_desc is NULL!\n");
800 pci_free_irq_vectors(ab_pci->pdev);
801 return -EINVAL;
802 }
803
804 ab_pci->msi_ep_base_data = msi_desc->msg.data;
805
806 ath12k_dbg(ab_pci->ab, ATH12K_DBG_PCI, "pci after request_irq msi_ep_base_data %d\n",
807 ab_pci->msi_ep_base_data);
808
809 return 0;
810}
811
812static int ath12k_pci_claim(struct ath12k_pci *ab_pci, struct pci_dev *pdev)
813{
814 struct ath12k_base *ab = ab_pci->ab;
815 u16 device_id;
816 int ret = 0;
817
818 pci_read_config_word(pdev, PCI_DEVICE_ID, &device_id);
819 if (device_id != ab_pci->dev_id) {
820 ath12k_err(ab, "pci device id mismatch: 0x%x 0x%x\n",
821 device_id, ab_pci->dev_id);
822 ret = -EIO;
823 goto out;
824 }
825
826 ret = pci_assign_resource(pdev, ATH12K_PCI_BAR_NUM);
827 if (ret) {
828 ath12k_err(ab, "failed to assign pci resource: %d\n", ret);
829 goto out;
830 }
831
832 ret = pci_enable_device(pdev);
833 if (ret) {
834 ath12k_err(ab, "failed to enable pci device: %d\n", ret);
835 goto out;
836 }
837
838 ret = pci_request_region(pdev, ATH12K_PCI_BAR_NUM, "ath12k_pci");
839 if (ret) {
840 ath12k_err(ab, "failed to request pci region: %d\n", ret);
841 goto disable_device;
842 }
843
844 ret = dma_set_mask_and_coherent(&pdev->dev,
845 DMA_BIT_MASK(ATH12K_PCI_DMA_MASK));
846 if (ret) {
847 ath12k_err(ab, "failed to set pci dma mask to %d: %d\n",
848 ATH12K_PCI_DMA_MASK, ret);
849 goto release_region;
850 }
851
852 pci_set_master(pdev);
853
854 ab->mem_len = pci_resource_len(pdev, ATH12K_PCI_BAR_NUM);
855 ab->mem = pci_iomap(pdev, ATH12K_PCI_BAR_NUM, 0);
856 if (!ab->mem) {
857 ath12k_err(ab, "failed to map pci bar %d\n", ATH12K_PCI_BAR_NUM);
858 ret = -EIO;
859 goto release_region;
860 }
861
862 ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot pci_mem 0x%pK\n", ab->mem);
863 return 0;
864
865release_region:
866 pci_release_region(pdev, ATH12K_PCI_BAR_NUM);
867disable_device:
868 pci_disable_device(pdev);
869out:
870 return ret;
871}
872
873static void ath12k_pci_free_region(struct ath12k_pci *ab_pci)
874{
875 struct ath12k_base *ab = ab_pci->ab;
876 struct pci_dev *pci_dev = ab_pci->pdev;
877
878 pci_iounmap(pci_dev, ab->mem);
879 ab->mem = NULL;
880 pci_release_region(pci_dev, ATH12K_PCI_BAR_NUM);
881 if (pci_is_enabled(pci_dev))
882 pci_disable_device(pci_dev);
883}
884
885static void ath12k_pci_aspm_disable(struct ath12k_pci *ab_pci)
886{
887 struct ath12k_base *ab = ab_pci->ab;
888
889 pcie_capability_read_word(ab_pci->pdev, PCI_EXP_LNKCTL,
890 &ab_pci->link_ctl);
891
892 ath12k_dbg(ab, ATH12K_DBG_PCI, "pci link_ctl 0x%04x L0s %d L1 %d\n",
893 ab_pci->link_ctl,
894 u16_get_bits(ab_pci->link_ctl, PCI_EXP_LNKCTL_ASPM_L0S),
895 u16_get_bits(ab_pci->link_ctl, PCI_EXP_LNKCTL_ASPM_L1));
896
897 /* disable L0s and L1 */
898 pcie_capability_clear_word(ab_pci->pdev, PCI_EXP_LNKCTL,
899 PCI_EXP_LNKCTL_ASPMC);
900
901 set_bit(ATH12K_PCI_ASPM_RESTORE, &ab_pci->flags);
902}
903
904static void ath12k_pci_aspm_restore(struct ath12k_pci *ab_pci)
905{
906 if (test_and_clear_bit(ATH12K_PCI_ASPM_RESTORE, &ab_pci->flags))
907 pcie_capability_clear_and_set_word(ab_pci->pdev, PCI_EXP_LNKCTL,
908 PCI_EXP_LNKCTL_ASPMC,
909 ab_pci->link_ctl &
910 PCI_EXP_LNKCTL_ASPMC);
911}
912
913static void ath12k_pci_kill_tasklets(struct ath12k_base *ab)
914{
915 int i;
916
917 for (i = 0; i < ab->hw_params->ce_count; i++) {
918 struct ath12k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
919
920 if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
921 continue;
922
923 tasklet_kill(&ce_pipe->intr_tq);
924 }
925}
926
927static void ath12k_pci_ce_irq_disable_sync(struct ath12k_base *ab)
928{
929 ath12k_pci_ce_irqs_disable(ab);
930 ath12k_pci_sync_ce_irqs(ab);
931 ath12k_pci_kill_tasklets(ab);
932}
933
934int ath12k_pci_map_service_to_pipe(struct ath12k_base *ab, u16 service_id,
935 u8 *ul_pipe, u8 *dl_pipe)
936{
937 const struct service_to_pipe *entry;
938 bool ul_set = false, dl_set = false;
939 int i;
940
941 for (i = 0; i < ab->hw_params->svc_to_ce_map_len; i++) {
942 entry = &ab->hw_params->svc_to_ce_map[i];
943
944 if (__le32_to_cpu(entry->service_id) != service_id)
945 continue;
946
947 switch (__le32_to_cpu(entry->pipedir)) {
948 case PIPEDIR_NONE:
949 break;
950 case PIPEDIR_IN:
951 WARN_ON(dl_set);
952 *dl_pipe = __le32_to_cpu(entry->pipenum);
953 dl_set = true;
954 break;
955 case PIPEDIR_OUT:
956 WARN_ON(ul_set);
957 *ul_pipe = __le32_to_cpu(entry->pipenum);
958 ul_set = true;
959 break;
960 case PIPEDIR_INOUT:
961 WARN_ON(dl_set);
962 WARN_ON(ul_set);
963 *dl_pipe = __le32_to_cpu(entry->pipenum);
964 *ul_pipe = __le32_to_cpu(entry->pipenum);
965 dl_set = true;
966 ul_set = true;
967 break;
968 }
969 }
970
971 if (WARN_ON(!ul_set || !dl_set))
972 return -ENOENT;
973
974 return 0;
975}
976
977int ath12k_pci_get_msi_irq(struct device *dev, unsigned int vector)
978{
979 struct pci_dev *pci_dev = to_pci_dev(dev);
980
981 return pci_irq_vector(pci_dev, vector);
982}
983
984int ath12k_pci_get_user_msi_assignment(struct ath12k_base *ab, char *user_name,
985 int *num_vectors, u32 *user_base_data,
986 u32 *base_vector)
987{
988 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
989 const struct ath12k_msi_config *msi_config = ab_pci->msi_config;
990 int idx;
991
992 for (idx = 0; idx < msi_config->total_users; idx++) {
993 if (strcmp(user_name, msi_config->users[idx].name) == 0) {
994 *num_vectors = msi_config->users[idx].num_vectors;
995 *base_vector = msi_config->users[idx].base_vector;
996 *user_base_data = *base_vector + ab_pci->msi_ep_base_data;
997
998 ath12k_dbg(ab, ATH12K_DBG_PCI,
999 "Assign MSI to user: %s, num_vectors: %d, user_base_data: %u, base_vector: %u\n",
1000 user_name, *num_vectors, *user_base_data,
1001 *base_vector);
1002
1003 return 0;
1004 }
1005 }
1006
1007 ath12k_err(ab, "Failed to find MSI assignment for %s!\n", user_name);
1008
1009 return -EINVAL;
1010}
1011
1012void ath12k_pci_get_msi_address(struct ath12k_base *ab, u32 *msi_addr_lo,
1013 u32 *msi_addr_hi)
1014{
1015 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1016 struct pci_dev *pci_dev = to_pci_dev(ab->dev);
1017
1018 pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_LO,
1019 msi_addr_lo);
1020
1021 if (test_bit(ATH12K_PCI_FLAG_IS_MSI_64, &ab_pci->flags)) {
1022 pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
1023 msi_addr_hi);
1024 } else {
1025 *msi_addr_hi = 0;
1026 }
1027}
1028
1029void ath12k_pci_get_ce_msi_idx(struct ath12k_base *ab, u32 ce_id,
1030 u32 *msi_idx)
1031{
1032 u32 i, msi_data_idx;
1033
1034 for (i = 0, msi_data_idx = 0; i < ab->hw_params->ce_count; i++) {
1035 if (ath12k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
1036 continue;
1037
1038 if (ce_id == i)
1039 break;
1040
1041 msi_data_idx++;
1042 }
1043 *msi_idx = msi_data_idx;
1044}
1045
1046void ath12k_pci_hif_ce_irq_enable(struct ath12k_base *ab)
1047{
1048 ath12k_pci_ce_irqs_enable(ab);
1049}
1050
1051void ath12k_pci_hif_ce_irq_disable(struct ath12k_base *ab)
1052{
1053 ath12k_pci_ce_irq_disable_sync(ab);
1054}
1055
1056void ath12k_pci_ext_irq_enable(struct ath12k_base *ab)
1057{
1058 int i;
1059
1060 set_bit(ATH12K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
1061
1062 for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
1063 struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
1064
1065 napi_enable(&irq_grp->napi);
1066 ath12k_pci_ext_grp_enable(irq_grp);
1067 }
1068}
1069
1070void ath12k_pci_ext_irq_disable(struct ath12k_base *ab)
1071{
1072 __ath12k_pci_ext_irq_disable(ab);
1073 ath12k_pci_sync_ext_irqs(ab);
1074}
1075
1076int ath12k_pci_hif_suspend(struct ath12k_base *ab)
1077{
1078 struct ath12k_pci *ar_pci = ath12k_pci_priv(ab);
1079
1080 ath12k_mhi_suspend(ar_pci);
1081
1082 return 0;
1083}
1084
1085int ath12k_pci_hif_resume(struct ath12k_base *ab)
1086{
1087 struct ath12k_pci *ar_pci = ath12k_pci_priv(ab);
1088
1089 ath12k_mhi_resume(ar_pci);
1090
1091 return 0;
1092}
1093
1094void ath12k_pci_stop(struct ath12k_base *ab)
1095{
1096 ath12k_pci_ce_irq_disable_sync(ab);
1097 ath12k_ce_cleanup_pipes(ab);
1098}
1099
1100int ath12k_pci_start(struct ath12k_base *ab)
1101{
1102 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1103
1104 set_bit(ATH12K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
1105
1106 if (test_bit(ATH12K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
1107 ath12k_pci_aspm_restore(ab_pci);
1108 else
1109 ath12k_info(ab, "leaving PCI ASPM disabled to avoid MHI M2 problems\n");
1110
1111 ath12k_pci_ce_irqs_enable(ab);
1112 ath12k_ce_rx_post_buf(ab);
1113
1114 return 0;
1115}
1116
1117u32 ath12k_pci_read32(struct ath12k_base *ab, u32 offset)
1118{
1119 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1120 u32 val, window_start;
1121 int ret = 0;
1122
1123 /* for offset beyond BAR + 4K - 32, may
1124 * need to wakeup MHI to access.
1125 */
1126 if (test_bit(ATH12K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
1127 offset >= ACCESS_ALWAYS_OFF && ab_pci->pci_ops->wakeup)
1128 ret = ab_pci->pci_ops->wakeup(ab);
1129
1130 if (offset < WINDOW_START) {
1131 val = ioread32(ab->mem + offset);
1132 } else {
1133 if (ab->static_window_map)
1134 window_start = ath12k_pci_get_window_start(ab, offset);
1135 else
1136 window_start = WINDOW_START;
1137
1138 if (window_start == WINDOW_START) {
1139 spin_lock_bh(&ab_pci->window_lock);
1140 ath12k_pci_select_window(ab_pci, offset);
1141 val = ioread32(ab->mem + window_start +
1142 (offset & WINDOW_RANGE_MASK));
1143 spin_unlock_bh(&ab_pci->window_lock);
1144 } else {
1145 if ((!window_start) &&
1146 (offset >= PCI_MHIREGLEN_REG &&
1147 offset <= PCI_MHI_REGION_END))
1148 offset = offset - PCI_MHIREGLEN_REG;
1149
1150 val = ioread32(ab->mem + window_start +
1151 (offset & WINDOW_RANGE_MASK));
1152 }
1153 }
1154
1155 if (test_bit(ATH12K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
1156 offset >= ACCESS_ALWAYS_OFF && ab_pci->pci_ops->release &&
1157 !ret)
1158 ab_pci->pci_ops->release(ab);
1159 return val;
1160}
1161
1162void ath12k_pci_write32(struct ath12k_base *ab, u32 offset, u32 value)
1163{
1164 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1165 u32 window_start;
1166 int ret = 0;
1167
1168 /* for offset beyond BAR + 4K - 32, may
1169 * need to wakeup MHI to access.
1170 */
1171 if (test_bit(ATH12K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
1172 offset >= ACCESS_ALWAYS_OFF && ab_pci->pci_ops->wakeup)
1173 ret = ab_pci->pci_ops->wakeup(ab);
1174
1175 if (offset < WINDOW_START) {
1176 iowrite32(value, ab->mem + offset);
1177 } else {
1178 if (ab->static_window_map)
1179 window_start = ath12k_pci_get_window_start(ab, offset);
1180 else
1181 window_start = WINDOW_START;
1182
1183 if (window_start == WINDOW_START) {
1184 spin_lock_bh(&ab_pci->window_lock);
1185 ath12k_pci_select_window(ab_pci, offset);
1186 iowrite32(value, ab->mem + window_start +
1187 (offset & WINDOW_RANGE_MASK));
1188 spin_unlock_bh(&ab_pci->window_lock);
1189 } else {
1190 if ((!window_start) &&
1191 (offset >= PCI_MHIREGLEN_REG &&
1192 offset <= PCI_MHI_REGION_END))
1193 offset = offset - PCI_MHIREGLEN_REG;
1194
1195 iowrite32(value, ab->mem + window_start +
1196 (offset & WINDOW_RANGE_MASK));
1197 }
1198 }
1199
1200 if (test_bit(ATH12K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
1201 offset >= ACCESS_ALWAYS_OFF && ab_pci->pci_ops->release &&
1202 !ret)
1203 ab_pci->pci_ops->release(ab);
1204}
1205
1206int ath12k_pci_power_up(struct ath12k_base *ab)
1207{
1208 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1209 int ret;
1210
1211 ab_pci->register_window = 0;
1212 clear_bit(ATH12K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
1213 ath12k_pci_sw_reset(ab_pci->ab, true);
1214
1215 /* Disable ASPM during firmware download due to problems switching
1216 * to AMSS state.
1217 */
1218 ath12k_pci_aspm_disable(ab_pci);
1219
1220 ath12k_pci_msi_enable(ab_pci);
1221
1222 ret = ath12k_mhi_start(ab_pci);
1223 if (ret) {
1224 ath12k_err(ab, "failed to start mhi: %d\n", ret);
1225 return ret;
1226 }
1227
1228 if (ab->static_window_map)
1229 ath12k_pci_select_static_window(ab_pci);
1230
1231 return 0;
1232}
1233
1234void ath12k_pci_power_down(struct ath12k_base *ab)
1235{
1236 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1237
1238 /* restore aspm in case firmware bootup fails */
1239 ath12k_pci_aspm_restore(ab_pci);
1240
1241 ath12k_pci_force_wake(ab_pci->ab);
1242 ath12k_pci_msi_disable(ab_pci);
1243 ath12k_mhi_stop(ab_pci);
1244 clear_bit(ATH12K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
1245 ath12k_pci_sw_reset(ab_pci->ab, false);
1246}
1247
1248static const struct ath12k_hif_ops ath12k_pci_hif_ops = {
1249 .start = ath12k_pci_start,
1250 .stop = ath12k_pci_stop,
1251 .read32 = ath12k_pci_read32,
1252 .write32 = ath12k_pci_write32,
1253 .power_down = ath12k_pci_power_down,
1254 .power_up = ath12k_pci_power_up,
1255 .suspend = ath12k_pci_hif_suspend,
1256 .resume = ath12k_pci_hif_resume,
1257 .irq_enable = ath12k_pci_ext_irq_enable,
1258 .irq_disable = ath12k_pci_ext_irq_disable,
1259 .get_msi_address = ath12k_pci_get_msi_address,
1260 .get_user_msi_vector = ath12k_pci_get_user_msi_assignment,
1261 .map_service_to_pipe = ath12k_pci_map_service_to_pipe,
1262 .ce_irq_enable = ath12k_pci_hif_ce_irq_enable,
1263 .ce_irq_disable = ath12k_pci_hif_ce_irq_disable,
1264 .get_ce_msi_idx = ath12k_pci_get_ce_msi_idx,
1265};
1266
1267static
1268void ath12k_pci_read_hw_version(struct ath12k_base *ab, u32 *major, u32 *minor)
1269{
1270 u32 soc_hw_version;
1271
1272 soc_hw_version = ath12k_pci_read32(ab, TCSR_SOC_HW_VERSION);
1273 *major = FIELD_GET(TCSR_SOC_HW_VERSION_MAJOR_MASK,
1274 soc_hw_version);
1275 *minor = FIELD_GET(TCSR_SOC_HW_VERSION_MINOR_MASK,
1276 soc_hw_version);
1277
1278 ath12k_dbg(ab, ATH12K_DBG_PCI,
1279 "pci tcsr_soc_hw_version major %d minor %d\n",
1280 *major, *minor);
1281}
1282
1283static int ath12k_pci_probe(struct pci_dev *pdev,
1284 const struct pci_device_id *pci_dev)
1285{
1286 struct ath12k_base *ab;
1287 struct ath12k_pci *ab_pci;
1288 u32 soc_hw_version_major, soc_hw_version_minor;
1289 int ret;
1290
1291 ab = ath12k_core_alloc(&pdev->dev, sizeof(*ab_pci), ATH12K_BUS_PCI);
1292 if (!ab) {
1293 dev_err(&pdev->dev, "failed to allocate ath12k base\n");
1294 return -ENOMEM;
1295 }
1296
1297 ab->dev = &pdev->dev;
1298 pci_set_drvdata(pdev, ab);
1299 ab_pci = ath12k_pci_priv(ab);
1300 ab_pci->dev_id = pci_dev->device;
1301 ab_pci->ab = ab;
1302 ab_pci->pdev = pdev;
1303 ab->hif.ops = &ath12k_pci_hif_ops;
1304 pci_set_drvdata(pdev, ab);
1305 spin_lock_init(&ab_pci->window_lock);
1306
1307 ret = ath12k_pci_claim(ab_pci, pdev);
1308 if (ret) {
1309 ath12k_err(ab, "failed to claim device: %d\n", ret);
1310 goto err_free_core;
1311 }
1312
1313 switch (pci_dev->device) {
1314 case QCN9274_DEVICE_ID:
1315 ab_pci->msi_config = &ath12k_msi_config[0];
1316 ab->static_window_map = true;
1317 ab_pci->pci_ops = &ath12k_pci_ops_qcn9274;
1318 ath12k_pci_read_hw_version(ab, &soc_hw_version_major,
1319 &soc_hw_version_minor);
1320 switch (soc_hw_version_major) {
1321 case ATH12K_PCI_SOC_HW_VERSION_2:
1322 ab->hw_rev = ATH12K_HW_QCN9274_HW20;
1323 break;
1324 case ATH12K_PCI_SOC_HW_VERSION_1:
1325 ab->hw_rev = ATH12K_HW_QCN9274_HW10;
1326 break;
1327 default:
1328 dev_err(&pdev->dev,
1329 "Unknown hardware version found for QCN9274: 0x%x\n",
1330 soc_hw_version_major);
1331 ret = -EOPNOTSUPP;
1332 goto err_pci_free_region;
1333 }
1334 break;
1335 case WCN7850_DEVICE_ID:
1336 ab_pci->msi_config = &ath12k_msi_config[0];
1337 ab->static_window_map = false;
1338 ab_pci->pci_ops = &ath12k_pci_ops_wcn7850;
1339 ath12k_pci_read_hw_version(ab, &soc_hw_version_major,
1340 &soc_hw_version_minor);
1341 switch (soc_hw_version_major) {
1342 case ATH12K_PCI_SOC_HW_VERSION_2:
1343 ab->hw_rev = ATH12K_HW_WCN7850_HW20;
1344 break;
1345 default:
1346 dev_err(&pdev->dev,
1347 "Unknown hardware version found for WCN7850: 0x%x\n",
1348 soc_hw_version_major);
1349 ret = -EOPNOTSUPP;
1350 goto err_pci_free_region;
1351 }
1352 break;
1353
1354 default:
1355 dev_err(&pdev->dev, "Unknown PCI device found: 0x%x\n",
1356 pci_dev->device);
1357 ret = -EOPNOTSUPP;
1358 goto err_pci_free_region;
1359 }
1360
1361 ret = ath12k_pci_msi_alloc(ab_pci);
1362 if (ret) {
1363 ath12k_err(ab, "failed to alloc msi: %d\n", ret);
1364 goto err_pci_free_region;
1365 }
1366
1367 ret = ath12k_core_pre_init(ab);
1368 if (ret)
1369 goto err_pci_msi_free;
1370
1371 ret = ath12k_pci_set_irq_affinity_hint(ab_pci, cpumask_of(0));
1372 if (ret) {
1373 ath12k_err(ab, "failed to set irq affinity %d\n", ret);
1374 goto err_pci_msi_free;
1375 }
1376
1377 ret = ath12k_mhi_register(ab_pci);
1378 if (ret) {
1379 ath12k_err(ab, "failed to register mhi: %d\n", ret);
1380 goto err_irq_affinity_cleanup;
1381 }
1382
1383 ret = ath12k_hal_srng_init(ab);
1384 if (ret)
1385 goto err_mhi_unregister;
1386
1387 ret = ath12k_ce_alloc_pipes(ab);
1388 if (ret) {
1389 ath12k_err(ab, "failed to allocate ce pipes: %d\n", ret);
1390 goto err_hal_srng_deinit;
1391 }
1392
1393 ath12k_pci_init_qmi_ce_config(ab);
1394
1395 ret = ath12k_pci_config_irq(ab);
1396 if (ret) {
1397 ath12k_err(ab, "failed to config irq: %d\n", ret);
1398 goto err_ce_free;
1399 }
1400
1401 /* kernel may allocate a dummy vector before request_irq and
1402 * then allocate a real vector when request_irq is called.
1403 * So get msi_data here again to avoid spurious interrupt
1404 * as msi_data will configured to srngs.
1405 */
1406 ret = ath12k_pci_config_msi_data(ab_pci);
1407 if (ret) {
1408 ath12k_err(ab, "failed to config msi_data: %d\n", ret);
1409 goto err_free_irq;
1410 }
1411
1412 ret = ath12k_core_init(ab);
1413 if (ret) {
1414 ath12k_err(ab, "failed to init core: %d\n", ret);
1415 goto err_free_irq;
1416 }
1417 return 0;
1418
1419err_free_irq:
1420 ath12k_pci_free_irq(ab);
1421
1422err_ce_free:
1423 ath12k_ce_free_pipes(ab);
1424
1425err_hal_srng_deinit:
1426 ath12k_hal_srng_deinit(ab);
1427
1428err_mhi_unregister:
1429 ath12k_mhi_unregister(ab_pci);
1430
1431err_pci_msi_free:
1432 ath12k_pci_msi_free(ab_pci);
1433
1434err_irq_affinity_cleanup:
1435 ath12k_pci_set_irq_affinity_hint(ab_pci, NULL);
1436
1437err_pci_free_region:
1438 ath12k_pci_free_region(ab_pci);
1439
1440err_free_core:
1441 ath12k_core_free(ab);
1442
1443 return ret;
1444}
1445
1446static void ath12k_pci_remove(struct pci_dev *pdev)
1447{
1448 struct ath12k_base *ab = pci_get_drvdata(pdev);
1449 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1450
1451 ath12k_pci_set_irq_affinity_hint(ab_pci, NULL);
1452
1453 if (test_bit(ATH12K_FLAG_QMI_FAIL, &ab->dev_flags)) {
1454 ath12k_pci_power_down(ab);
1455 ath12k_qmi_deinit_service(ab);
1456 goto qmi_fail;
1457 }
1458
1459 set_bit(ATH12K_FLAG_UNREGISTERING, &ab->dev_flags);
1460
1461 cancel_work_sync(&ab->reset_work);
1462 ath12k_core_deinit(ab);
1463
1464qmi_fail:
1465 ath12k_mhi_unregister(ab_pci);
1466
1467 ath12k_pci_free_irq(ab);
1468 ath12k_pci_msi_free(ab_pci);
1469 ath12k_pci_free_region(ab_pci);
1470
1471 ath12k_hal_srng_deinit(ab);
1472 ath12k_ce_free_pipes(ab);
1473 ath12k_core_free(ab);
1474}
1475
1476static void ath12k_pci_shutdown(struct pci_dev *pdev)
1477{
1478 struct ath12k_base *ab = pci_get_drvdata(pdev);
1479 struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
1480
1481 ath12k_pci_set_irq_affinity_hint(ab_pci, NULL);
1482 ath12k_pci_power_down(ab);
1483}
1484
1485static __maybe_unused int ath12k_pci_pm_suspend(struct device *dev)
1486{
1487 struct ath12k_base *ab = dev_get_drvdata(dev);
1488 int ret;
1489
1490 ret = ath12k_core_suspend(ab);
1491 if (ret)
1492 ath12k_warn(ab, "failed to suspend core: %d\n", ret);
1493
1494 return ret;
1495}
1496
1497static __maybe_unused int ath12k_pci_pm_resume(struct device *dev)
1498{
1499 struct ath12k_base *ab = dev_get_drvdata(dev);
1500 int ret;
1501
1502 ret = ath12k_core_resume(ab);
1503 if (ret)
1504 ath12k_warn(ab, "failed to resume core: %d\n", ret);
1505
1506 return ret;
1507}
1508
1509static SIMPLE_DEV_PM_OPS(ath12k_pci_pm_ops,
1510 ath12k_pci_pm_suspend,
1511 ath12k_pci_pm_resume);
1512
1513static struct pci_driver ath12k_pci_driver = {
1514 .name = "ath12k_pci",
1515 .id_table = ath12k_pci_id_table,
1516 .probe = ath12k_pci_probe,
1517 .remove = ath12k_pci_remove,
1518 .shutdown = ath12k_pci_shutdown,
1519 .driver.pm = &ath12k_pci_pm_ops,
1520};
1521
1522static int ath12k_pci_init(void)
1523{
1524 int ret;
1525
1526 ret = pci_register_driver(&ath12k_pci_driver);
1527 if (ret) {
1528 pr_err("failed to register ath12k pci driver: %d\n",
1529 ret);
1530 return ret;
1531 }
1532
1533 return 0;
1534}
1535module_init(ath12k_pci_init);
1536
1537static void ath12k_pci_exit(void)
1538{
1539 pci_unregister_driver(&ath12k_pci_driver);
1540}
1541
1542module_exit(ath12k_pci_exit);
1543
1544MODULE_DESCRIPTION("Driver support for Qualcomm Technologies PCIe 802.11be WLAN devices");
1545MODULE_LICENSE("Dual BSD/GPL");