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ath10k: remove deprecated firmware API 1 support
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / ath / ath10k / pci.c
1 /*
2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <linux/pci.h>
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/spinlock.h>
22 #include <linux/bitops.h>
23
24 #include "core.h"
25 #include "debug.h"
26
27 #include "targaddrs.h"
28 #include "bmi.h"
29
30 #include "hif.h"
31 #include "htc.h"
32
33 #include "ce.h"
34 #include "pci.h"
35
36 enum ath10k_pci_reset_mode {
37 ATH10K_PCI_RESET_AUTO = 0,
38 ATH10K_PCI_RESET_WARM_ONLY = 1,
39 };
40
41 static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO;
42 static unsigned int ath10k_pci_reset_mode = ATH10K_PCI_RESET_AUTO;
43
44 module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644);
45 MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)");
46
47 module_param_named(reset_mode, ath10k_pci_reset_mode, uint, 0644);
48 MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)");
49
50 /* how long wait to wait for target to initialise, in ms */
51 #define ATH10K_PCI_TARGET_WAIT 3000
52 #define ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS 3
53
54 static const struct pci_device_id ath10k_pci_id_table[] = {
55 { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */
56 { PCI_VDEVICE(ATHEROS, QCA6164_2_1_DEVICE_ID) }, /* PCI-E QCA6164 V2.1 */
57 { PCI_VDEVICE(ATHEROS, QCA6174_2_1_DEVICE_ID) }, /* PCI-E QCA6174 V2.1 */
58 { PCI_VDEVICE(ATHEROS, QCA99X0_2_0_DEVICE_ID) }, /* PCI-E QCA99X0 V2 */
59 { PCI_VDEVICE(ATHEROS, QCA9377_1_0_DEVICE_ID) }, /* PCI-E QCA9377 V1 */
60 {0}
61 };
62
63 static const struct ath10k_pci_supp_chip ath10k_pci_supp_chips[] = {
64 /* QCA988X pre 2.0 chips are not supported because they need some nasty
65 * hacks. ath10k doesn't have them and these devices crash horribly
66 * because of that.
67 */
68 { QCA988X_2_0_DEVICE_ID, QCA988X_HW_2_0_CHIP_ID_REV },
69
70 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV },
71 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV },
72 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV },
73 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV },
74 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV },
75
76 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV },
77 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV },
78 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV },
79 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV },
80 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV },
81
82 { QCA99X0_2_0_DEVICE_ID, QCA99X0_HW_2_0_CHIP_ID_REV },
83
84 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_0_CHIP_ID_REV },
85 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_1_CHIP_ID_REV },
86 };
87
88 static void ath10k_pci_buffer_cleanup(struct ath10k *ar);
89 static int ath10k_pci_cold_reset(struct ath10k *ar);
90 static int ath10k_pci_safe_chip_reset(struct ath10k *ar);
91 static int ath10k_pci_init_irq(struct ath10k *ar);
92 static int ath10k_pci_deinit_irq(struct ath10k *ar);
93 static int ath10k_pci_request_irq(struct ath10k *ar);
94 static void ath10k_pci_free_irq(struct ath10k *ar);
95 static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
96 struct ath10k_ce_pipe *rx_pipe,
97 struct bmi_xfer *xfer);
98 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar);
99 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state);
100 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
101 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state);
102 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state);
103 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
104 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state);
105
106 static struct ce_attr host_ce_config_wlan[] = {
107 /* CE0: host->target HTC control and raw streams */
108 {
109 .flags = CE_ATTR_FLAGS,
110 .src_nentries = 16,
111 .src_sz_max = 256,
112 .dest_nentries = 0,
113 .send_cb = ath10k_pci_htc_tx_cb,
114 },
115
116 /* CE1: target->host HTT + HTC control */
117 {
118 .flags = CE_ATTR_FLAGS,
119 .src_nentries = 0,
120 .src_sz_max = 2048,
121 .dest_nentries = 512,
122 .recv_cb = ath10k_pci_htt_htc_rx_cb,
123 },
124
125 /* CE2: target->host WMI */
126 {
127 .flags = CE_ATTR_FLAGS,
128 .src_nentries = 0,
129 .src_sz_max = 2048,
130 .dest_nentries = 128,
131 .recv_cb = ath10k_pci_htc_rx_cb,
132 },
133
134 /* CE3: host->target WMI */
135 {
136 .flags = CE_ATTR_FLAGS,
137 .src_nentries = 32,
138 .src_sz_max = 2048,
139 .dest_nentries = 0,
140 .send_cb = ath10k_pci_htc_tx_cb,
141 },
142
143 /* CE4: host->target HTT */
144 {
145 .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
146 .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES,
147 .src_sz_max = 256,
148 .dest_nentries = 0,
149 .send_cb = ath10k_pci_htt_tx_cb,
150 },
151
152 /* CE5: target->host HTT (HIF->HTT) */
153 {
154 .flags = CE_ATTR_FLAGS,
155 .src_nentries = 0,
156 .src_sz_max = 512,
157 .dest_nentries = 512,
158 .recv_cb = ath10k_pci_htt_rx_cb,
159 },
160
161 /* CE6: target autonomous hif_memcpy */
162 {
163 .flags = CE_ATTR_FLAGS,
164 .src_nentries = 0,
165 .src_sz_max = 0,
166 .dest_nentries = 0,
167 },
168
169 /* CE7: ce_diag, the Diagnostic Window */
170 {
171 .flags = CE_ATTR_FLAGS,
172 .src_nentries = 2,
173 .src_sz_max = DIAG_TRANSFER_LIMIT,
174 .dest_nentries = 2,
175 },
176
177 /* CE8: target->host pktlog */
178 {
179 .flags = CE_ATTR_FLAGS,
180 .src_nentries = 0,
181 .src_sz_max = 2048,
182 .dest_nentries = 128,
183 .recv_cb = ath10k_pci_pktlog_rx_cb,
184 },
185
186 /* CE9 target autonomous qcache memcpy */
187 {
188 .flags = CE_ATTR_FLAGS,
189 .src_nentries = 0,
190 .src_sz_max = 0,
191 .dest_nentries = 0,
192 },
193
194 /* CE10: target autonomous hif memcpy */
195 {
196 .flags = CE_ATTR_FLAGS,
197 .src_nentries = 0,
198 .src_sz_max = 0,
199 .dest_nentries = 0,
200 },
201
202 /* CE11: target autonomous hif memcpy */
203 {
204 .flags = CE_ATTR_FLAGS,
205 .src_nentries = 0,
206 .src_sz_max = 0,
207 .dest_nentries = 0,
208 },
209 };
210
211 /* Target firmware's Copy Engine configuration. */
212 static struct ce_pipe_config target_ce_config_wlan[] = {
213 /* CE0: host->target HTC control and raw streams */
214 {
215 .pipenum = __cpu_to_le32(0),
216 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
217 .nentries = __cpu_to_le32(32),
218 .nbytes_max = __cpu_to_le32(256),
219 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
220 .reserved = __cpu_to_le32(0),
221 },
222
223 /* CE1: target->host HTT + HTC control */
224 {
225 .pipenum = __cpu_to_le32(1),
226 .pipedir = __cpu_to_le32(PIPEDIR_IN),
227 .nentries = __cpu_to_le32(32),
228 .nbytes_max = __cpu_to_le32(2048),
229 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
230 .reserved = __cpu_to_le32(0),
231 },
232
233 /* CE2: target->host WMI */
234 {
235 .pipenum = __cpu_to_le32(2),
236 .pipedir = __cpu_to_le32(PIPEDIR_IN),
237 .nentries = __cpu_to_le32(64),
238 .nbytes_max = __cpu_to_le32(2048),
239 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
240 .reserved = __cpu_to_le32(0),
241 },
242
243 /* CE3: host->target WMI */
244 {
245 .pipenum = __cpu_to_le32(3),
246 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
247 .nentries = __cpu_to_le32(32),
248 .nbytes_max = __cpu_to_le32(2048),
249 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
250 .reserved = __cpu_to_le32(0),
251 },
252
253 /* CE4: host->target HTT */
254 {
255 .pipenum = __cpu_to_le32(4),
256 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
257 .nentries = __cpu_to_le32(256),
258 .nbytes_max = __cpu_to_le32(256),
259 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
260 .reserved = __cpu_to_le32(0),
261 },
262
263 /* NB: 50% of src nentries, since tx has 2 frags */
264
265 /* CE5: target->host HTT (HIF->HTT) */
266 {
267 .pipenum = __cpu_to_le32(5),
268 .pipedir = __cpu_to_le32(PIPEDIR_IN),
269 .nentries = __cpu_to_le32(32),
270 .nbytes_max = __cpu_to_le32(512),
271 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
272 .reserved = __cpu_to_le32(0),
273 },
274
275 /* CE6: Reserved for target autonomous hif_memcpy */
276 {
277 .pipenum = __cpu_to_le32(6),
278 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
279 .nentries = __cpu_to_le32(32),
280 .nbytes_max = __cpu_to_le32(4096),
281 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
282 .reserved = __cpu_to_le32(0),
283 },
284
285 /* CE7 used only by Host */
286 {
287 .pipenum = __cpu_to_le32(7),
288 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
289 .nentries = __cpu_to_le32(0),
290 .nbytes_max = __cpu_to_le32(0),
291 .flags = __cpu_to_le32(0),
292 .reserved = __cpu_to_le32(0),
293 },
294
295 /* CE8 target->host packtlog */
296 {
297 .pipenum = __cpu_to_le32(8),
298 .pipedir = __cpu_to_le32(PIPEDIR_IN),
299 .nentries = __cpu_to_le32(64),
300 .nbytes_max = __cpu_to_le32(2048),
301 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
302 .reserved = __cpu_to_le32(0),
303 },
304
305 /* CE9 target autonomous qcache memcpy */
306 {
307 .pipenum = __cpu_to_le32(9),
308 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
309 .nentries = __cpu_to_le32(32),
310 .nbytes_max = __cpu_to_le32(2048),
311 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
312 .reserved = __cpu_to_le32(0),
313 },
314
315 /* It not necessary to send target wlan configuration for CE10 & CE11
316 * as these CEs are not actively used in target.
317 */
318 };
319
320 /*
321 * Map from service/endpoint to Copy Engine.
322 * This table is derived from the CE_PCI TABLE, above.
323 * It is passed to the Target at startup for use by firmware.
324 */
325 static struct service_to_pipe target_service_to_ce_map_wlan[] = {
326 {
327 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
328 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
329 __cpu_to_le32(3),
330 },
331 {
332 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
333 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
334 __cpu_to_le32(2),
335 },
336 {
337 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
338 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
339 __cpu_to_le32(3),
340 },
341 {
342 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
343 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
344 __cpu_to_le32(2),
345 },
346 {
347 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
348 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
349 __cpu_to_le32(3),
350 },
351 {
352 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
353 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
354 __cpu_to_le32(2),
355 },
356 {
357 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
358 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
359 __cpu_to_le32(3),
360 },
361 {
362 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
363 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
364 __cpu_to_le32(2),
365 },
366 {
367 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
368 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
369 __cpu_to_le32(3),
370 },
371 {
372 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
373 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
374 __cpu_to_le32(2),
375 },
376 {
377 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
378 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
379 __cpu_to_le32(0),
380 },
381 {
382 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
383 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
384 __cpu_to_le32(1),
385 },
386 { /* not used */
387 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
388 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
389 __cpu_to_le32(0),
390 },
391 { /* not used */
392 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
393 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
394 __cpu_to_le32(1),
395 },
396 {
397 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
398 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
399 __cpu_to_le32(4),
400 },
401 {
402 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
403 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
404 __cpu_to_le32(5),
405 },
406
407 /* (Additions here) */
408
409 { /* must be last */
410 __cpu_to_le32(0),
411 __cpu_to_le32(0),
412 __cpu_to_le32(0),
413 },
414 };
415
416 static bool ath10k_pci_is_awake(struct ath10k *ar)
417 {
418 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
419 u32 val = ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
420 RTC_STATE_ADDRESS);
421
422 return RTC_STATE_V_GET(val) == RTC_STATE_V_ON;
423 }
424
425 static void __ath10k_pci_wake(struct ath10k *ar)
426 {
427 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
428
429 lockdep_assert_held(&ar_pci->ps_lock);
430
431 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake reg refcount %lu awake %d\n",
432 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
433
434 iowrite32(PCIE_SOC_WAKE_V_MASK,
435 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
436 PCIE_SOC_WAKE_ADDRESS);
437 }
438
439 static void __ath10k_pci_sleep(struct ath10k *ar)
440 {
441 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
442
443 lockdep_assert_held(&ar_pci->ps_lock);
444
445 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep reg refcount %lu awake %d\n",
446 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
447
448 iowrite32(PCIE_SOC_WAKE_RESET,
449 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
450 PCIE_SOC_WAKE_ADDRESS);
451 ar_pci->ps_awake = false;
452 }
453
454 static int ath10k_pci_wake_wait(struct ath10k *ar)
455 {
456 int tot_delay = 0;
457 int curr_delay = 5;
458
459 while (tot_delay < PCIE_WAKE_TIMEOUT) {
460 if (ath10k_pci_is_awake(ar)) {
461 if (tot_delay > PCIE_WAKE_LATE_US)
462 ath10k_warn(ar, "device wakeup took %d ms which is unusally long, otherwise it works normally.\n",
463 tot_delay / 1000);
464 return 0;
465 }
466
467 udelay(curr_delay);
468 tot_delay += curr_delay;
469
470 if (curr_delay < 50)
471 curr_delay += 5;
472 }
473
474 return -ETIMEDOUT;
475 }
476
477 static int ath10k_pci_force_wake(struct ath10k *ar)
478 {
479 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
480 unsigned long flags;
481 int ret = 0;
482
483 if (ar_pci->pci_ps)
484 return ret;
485
486 spin_lock_irqsave(&ar_pci->ps_lock, flags);
487
488 if (!ar_pci->ps_awake) {
489 iowrite32(PCIE_SOC_WAKE_V_MASK,
490 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
491 PCIE_SOC_WAKE_ADDRESS);
492
493 ret = ath10k_pci_wake_wait(ar);
494 if (ret == 0)
495 ar_pci->ps_awake = true;
496 }
497
498 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
499
500 return ret;
501 }
502
503 static void ath10k_pci_force_sleep(struct ath10k *ar)
504 {
505 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
506 unsigned long flags;
507
508 spin_lock_irqsave(&ar_pci->ps_lock, flags);
509
510 iowrite32(PCIE_SOC_WAKE_RESET,
511 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
512 PCIE_SOC_WAKE_ADDRESS);
513 ar_pci->ps_awake = false;
514
515 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
516 }
517
518 static int ath10k_pci_wake(struct ath10k *ar)
519 {
520 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
521 unsigned long flags;
522 int ret = 0;
523
524 if (ar_pci->pci_ps == 0)
525 return ret;
526
527 spin_lock_irqsave(&ar_pci->ps_lock, flags);
528
529 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake refcount %lu awake %d\n",
530 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
531
532 /* This function can be called very frequently. To avoid excessive
533 * CPU stalls for MMIO reads use a cache var to hold the device state.
534 */
535 if (!ar_pci->ps_awake) {
536 __ath10k_pci_wake(ar);
537
538 ret = ath10k_pci_wake_wait(ar);
539 if (ret == 0)
540 ar_pci->ps_awake = true;
541 }
542
543 if (ret == 0) {
544 ar_pci->ps_wake_refcount++;
545 WARN_ON(ar_pci->ps_wake_refcount == 0);
546 }
547
548 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
549
550 return ret;
551 }
552
553 static void ath10k_pci_sleep(struct ath10k *ar)
554 {
555 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
556 unsigned long flags;
557
558 if (ar_pci->pci_ps == 0)
559 return;
560
561 spin_lock_irqsave(&ar_pci->ps_lock, flags);
562
563 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep refcount %lu awake %d\n",
564 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
565
566 if (WARN_ON(ar_pci->ps_wake_refcount == 0))
567 goto skip;
568
569 ar_pci->ps_wake_refcount--;
570
571 mod_timer(&ar_pci->ps_timer, jiffies +
572 msecs_to_jiffies(ATH10K_PCI_SLEEP_GRACE_PERIOD_MSEC));
573
574 skip:
575 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
576 }
577
578 static void ath10k_pci_ps_timer(unsigned long ptr)
579 {
580 struct ath10k *ar = (void *)ptr;
581 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
582 unsigned long flags;
583
584 spin_lock_irqsave(&ar_pci->ps_lock, flags);
585
586 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps timer refcount %lu awake %d\n",
587 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
588
589 if (ar_pci->ps_wake_refcount > 0)
590 goto skip;
591
592 __ath10k_pci_sleep(ar);
593
594 skip:
595 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
596 }
597
598 static void ath10k_pci_sleep_sync(struct ath10k *ar)
599 {
600 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
601 unsigned long flags;
602
603 if (ar_pci->pci_ps == 0) {
604 ath10k_pci_force_sleep(ar);
605 return;
606 }
607
608 del_timer_sync(&ar_pci->ps_timer);
609
610 spin_lock_irqsave(&ar_pci->ps_lock, flags);
611 WARN_ON(ar_pci->ps_wake_refcount > 0);
612 __ath10k_pci_sleep(ar);
613 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
614 }
615
616 static void ath10k_bus_pci_write32(struct ath10k *ar, u32 offset, u32 value)
617 {
618 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
619 int ret;
620
621 if (unlikely(offset + sizeof(value) > ar_pci->mem_len)) {
622 ath10k_warn(ar, "refusing to write mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
623 offset, offset + sizeof(value), ar_pci->mem_len);
624 return;
625 }
626
627 ret = ath10k_pci_wake(ar);
628 if (ret) {
629 ath10k_warn(ar, "failed to wake target for write32 of 0x%08x at 0x%08x: %d\n",
630 value, offset, ret);
631 return;
632 }
633
634 iowrite32(value, ar_pci->mem + offset);
635 ath10k_pci_sleep(ar);
636 }
637
638 static u32 ath10k_bus_pci_read32(struct ath10k *ar, u32 offset)
639 {
640 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
641 u32 val;
642 int ret;
643
644 if (unlikely(offset + sizeof(val) > ar_pci->mem_len)) {
645 ath10k_warn(ar, "refusing to read mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
646 offset, offset + sizeof(val), ar_pci->mem_len);
647 return 0;
648 }
649
650 ret = ath10k_pci_wake(ar);
651 if (ret) {
652 ath10k_warn(ar, "failed to wake target for read32 at 0x%08x: %d\n",
653 offset, ret);
654 return 0xffffffff;
655 }
656
657 val = ioread32(ar_pci->mem + offset);
658 ath10k_pci_sleep(ar);
659
660 return val;
661 }
662
663 inline void ath10k_pci_write32(struct ath10k *ar, u32 offset, u32 value)
664 {
665 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
666
667 ar_pci->bus_ops->write32(ar, offset, value);
668 }
669
670 inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset)
671 {
672 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
673
674 return ar_pci->bus_ops->read32(ar, offset);
675 }
676
677 u32 ath10k_pci_soc_read32(struct ath10k *ar, u32 addr)
678 {
679 return ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + addr);
680 }
681
682 void ath10k_pci_soc_write32(struct ath10k *ar, u32 addr, u32 val)
683 {
684 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + addr, val);
685 }
686
687 u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr)
688 {
689 return ath10k_pci_read32(ar, PCIE_LOCAL_BASE_ADDRESS + addr);
690 }
691
692 void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val)
693 {
694 ath10k_pci_write32(ar, PCIE_LOCAL_BASE_ADDRESS + addr, val);
695 }
696
697 bool ath10k_pci_irq_pending(struct ath10k *ar)
698 {
699 u32 cause;
700
701 /* Check if the shared legacy irq is for us */
702 cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
703 PCIE_INTR_CAUSE_ADDRESS);
704 if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL))
705 return true;
706
707 return false;
708 }
709
710 void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar)
711 {
712 /* IMPORTANT: INTR_CLR register has to be set after
713 * INTR_ENABLE is set to 0, otherwise interrupt can not be
714 * really cleared. */
715 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
716 0);
717 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS,
718 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
719
720 /* IMPORTANT: this extra read transaction is required to
721 * flush the posted write buffer. */
722 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
723 PCIE_INTR_ENABLE_ADDRESS);
724 }
725
726 void ath10k_pci_enable_legacy_irq(struct ath10k *ar)
727 {
728 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
729 PCIE_INTR_ENABLE_ADDRESS,
730 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
731
732 /* IMPORTANT: this extra read transaction is required to
733 * flush the posted write buffer. */
734 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
735 PCIE_INTR_ENABLE_ADDRESS);
736 }
737
738 static inline const char *ath10k_pci_get_irq_method(struct ath10k *ar)
739 {
740 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
741
742 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_MSI)
743 return "msi";
744
745 return "legacy";
746 }
747
748 static int __ath10k_pci_rx_post_buf(struct ath10k_pci_pipe *pipe)
749 {
750 struct ath10k *ar = pipe->hif_ce_state;
751 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
752 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
753 struct sk_buff *skb;
754 dma_addr_t paddr;
755 int ret;
756
757 skb = dev_alloc_skb(pipe->buf_sz);
758 if (!skb)
759 return -ENOMEM;
760
761 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
762
763 paddr = dma_map_single(ar->dev, skb->data,
764 skb->len + skb_tailroom(skb),
765 DMA_FROM_DEVICE);
766 if (unlikely(dma_mapping_error(ar->dev, paddr))) {
767 ath10k_warn(ar, "failed to dma map pci rx buf\n");
768 dev_kfree_skb_any(skb);
769 return -EIO;
770 }
771
772 ATH10K_SKB_RXCB(skb)->paddr = paddr;
773
774 spin_lock_bh(&ar_pci->ce_lock);
775 ret = __ath10k_ce_rx_post_buf(ce_pipe, skb, paddr);
776 spin_unlock_bh(&ar_pci->ce_lock);
777 if (ret) {
778 dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb),
779 DMA_FROM_DEVICE);
780 dev_kfree_skb_any(skb);
781 return ret;
782 }
783
784 return 0;
785 }
786
787 static void ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe)
788 {
789 struct ath10k *ar = pipe->hif_ce_state;
790 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
791 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
792 int ret, num;
793
794 if (pipe->buf_sz == 0)
795 return;
796
797 if (!ce_pipe->dest_ring)
798 return;
799
800 spin_lock_bh(&ar_pci->ce_lock);
801 num = __ath10k_ce_rx_num_free_bufs(ce_pipe);
802 spin_unlock_bh(&ar_pci->ce_lock);
803
804 while (num >= 0) {
805 ret = __ath10k_pci_rx_post_buf(pipe);
806 if (ret) {
807 if (ret == -ENOSPC)
808 break;
809 ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret);
810 mod_timer(&ar_pci->rx_post_retry, jiffies +
811 ATH10K_PCI_RX_POST_RETRY_MS);
812 break;
813 }
814 num--;
815 }
816 }
817
818 void ath10k_pci_rx_post(struct ath10k *ar)
819 {
820 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
821 int i;
822
823 for (i = 0; i < CE_COUNT; i++)
824 ath10k_pci_rx_post_pipe(&ar_pci->pipe_info[i]);
825 }
826
827 void ath10k_pci_rx_replenish_retry(unsigned long ptr)
828 {
829 struct ath10k *ar = (void *)ptr;
830
831 ath10k_pci_rx_post(ar);
832 }
833
834 static u32 ath10k_pci_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
835 {
836 u32 val = 0;
837
838 switch (ar->hw_rev) {
839 case ATH10K_HW_QCA988X:
840 case ATH10K_HW_QCA6174:
841 case ATH10K_HW_QCA9377:
842 val = (ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
843 CORE_CTRL_ADDRESS) &
844 0x7ff) << 21;
845 break;
846 case ATH10K_HW_QCA99X0:
847 case ATH10K_HW_QCA4019:
848 val = ath10k_pci_read32(ar, PCIE_BAR_REG_ADDRESS);
849 break;
850 }
851
852 val |= 0x100000 | (addr & 0xfffff);
853 return val;
854 }
855
856 /*
857 * Diagnostic read/write access is provided for startup/config/debug usage.
858 * Caller must guarantee proper alignment, when applicable, and single user
859 * at any moment.
860 */
861 static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
862 int nbytes)
863 {
864 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
865 int ret = 0;
866 u32 *buf;
867 unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
868 struct ath10k_ce_pipe *ce_diag;
869 /* Host buffer address in CE space */
870 u32 ce_data;
871 dma_addr_t ce_data_base = 0;
872 void *data_buf = NULL;
873 int i;
874
875 spin_lock_bh(&ar_pci->ce_lock);
876
877 ce_diag = ar_pci->ce_diag;
878
879 /*
880 * Allocate a temporary bounce buffer to hold caller's data
881 * to be DMA'ed from Target. This guarantees
882 * 1) 4-byte alignment
883 * 2) Buffer in DMA-able space
884 */
885 orig_nbytes = nbytes;
886 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
887 orig_nbytes,
888 &ce_data_base,
889 GFP_ATOMIC);
890
891 if (!data_buf) {
892 ret = -ENOMEM;
893 goto done;
894 }
895 memset(data_buf, 0, orig_nbytes);
896
897 remaining_bytes = orig_nbytes;
898 ce_data = ce_data_base;
899 while (remaining_bytes) {
900 nbytes = min_t(unsigned int, remaining_bytes,
901 DIAG_TRANSFER_LIMIT);
902
903 ret = __ath10k_ce_rx_post_buf(ce_diag, &ce_data, ce_data);
904 if (ret != 0)
905 goto done;
906
907 /* Request CE to send from Target(!) address to Host buffer */
908 /*
909 * The address supplied by the caller is in the
910 * Target CPU virtual address space.
911 *
912 * In order to use this address with the diagnostic CE,
913 * convert it from Target CPU virtual address space
914 * to CE address space
915 */
916 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
917
918 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)address, nbytes, 0,
919 0);
920 if (ret)
921 goto done;
922
923 i = 0;
924 while (ath10k_ce_completed_send_next_nolock(ce_diag,
925 NULL) != 0) {
926 mdelay(1);
927 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
928 ret = -EBUSY;
929 goto done;
930 }
931 }
932
933 i = 0;
934 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
935 (void **)&buf,
936 &completed_nbytes)
937 != 0) {
938 mdelay(1);
939
940 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
941 ret = -EBUSY;
942 goto done;
943 }
944 }
945
946 if (nbytes != completed_nbytes) {
947 ret = -EIO;
948 goto done;
949 }
950
951 if (*buf != ce_data) {
952 ret = -EIO;
953 goto done;
954 }
955
956 remaining_bytes -= nbytes;
957 address += nbytes;
958 ce_data += nbytes;
959 }
960
961 done:
962 if (ret == 0)
963 memcpy(data, data_buf, orig_nbytes);
964 else
965 ath10k_warn(ar, "failed to read diag value at 0x%x: %d\n",
966 address, ret);
967
968 if (data_buf)
969 dma_free_coherent(ar->dev, orig_nbytes, data_buf,
970 ce_data_base);
971
972 spin_unlock_bh(&ar_pci->ce_lock);
973
974 return ret;
975 }
976
977 static int ath10k_pci_diag_read32(struct ath10k *ar, u32 address, u32 *value)
978 {
979 __le32 val = 0;
980 int ret;
981
982 ret = ath10k_pci_diag_read_mem(ar, address, &val, sizeof(val));
983 *value = __le32_to_cpu(val);
984
985 return ret;
986 }
987
988 static int __ath10k_pci_diag_read_hi(struct ath10k *ar, void *dest,
989 u32 src, u32 len)
990 {
991 u32 host_addr, addr;
992 int ret;
993
994 host_addr = host_interest_item_address(src);
995
996 ret = ath10k_pci_diag_read32(ar, host_addr, &addr);
997 if (ret != 0) {
998 ath10k_warn(ar, "failed to get memcpy hi address for firmware address %d: %d\n",
999 src, ret);
1000 return ret;
1001 }
1002
1003 ret = ath10k_pci_diag_read_mem(ar, addr, dest, len);
1004 if (ret != 0) {
1005 ath10k_warn(ar, "failed to memcpy firmware memory from %d (%d B): %d\n",
1006 addr, len, ret);
1007 return ret;
1008 }
1009
1010 return 0;
1011 }
1012
1013 #define ath10k_pci_diag_read_hi(ar, dest, src, len) \
1014 __ath10k_pci_diag_read_hi(ar, dest, HI_ITEM(src), len)
1015
1016 int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
1017 const void *data, int nbytes)
1018 {
1019 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1020 int ret = 0;
1021 u32 *buf;
1022 unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
1023 struct ath10k_ce_pipe *ce_diag;
1024 void *data_buf = NULL;
1025 u32 ce_data; /* Host buffer address in CE space */
1026 dma_addr_t ce_data_base = 0;
1027 int i;
1028
1029 spin_lock_bh(&ar_pci->ce_lock);
1030
1031 ce_diag = ar_pci->ce_diag;
1032
1033 /*
1034 * Allocate a temporary bounce buffer to hold caller's data
1035 * to be DMA'ed to Target. This guarantees
1036 * 1) 4-byte alignment
1037 * 2) Buffer in DMA-able space
1038 */
1039 orig_nbytes = nbytes;
1040 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
1041 orig_nbytes,
1042 &ce_data_base,
1043 GFP_ATOMIC);
1044 if (!data_buf) {
1045 ret = -ENOMEM;
1046 goto done;
1047 }
1048
1049 /* Copy caller's data to allocated DMA buf */
1050 memcpy(data_buf, data, orig_nbytes);
1051
1052 /*
1053 * The address supplied by the caller is in the
1054 * Target CPU virtual address space.
1055 *
1056 * In order to use this address with the diagnostic CE,
1057 * convert it from
1058 * Target CPU virtual address space
1059 * to
1060 * CE address space
1061 */
1062 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
1063
1064 remaining_bytes = orig_nbytes;
1065 ce_data = ce_data_base;
1066 while (remaining_bytes) {
1067 /* FIXME: check cast */
1068 nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
1069
1070 /* Set up to receive directly into Target(!) address */
1071 ret = __ath10k_ce_rx_post_buf(ce_diag, &address, address);
1072 if (ret != 0)
1073 goto done;
1074
1075 /*
1076 * Request CE to send caller-supplied data that
1077 * was copied to bounce buffer to Target(!) address.
1078 */
1079 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)ce_data,
1080 nbytes, 0, 0);
1081 if (ret != 0)
1082 goto done;
1083
1084 i = 0;
1085 while (ath10k_ce_completed_send_next_nolock(ce_diag,
1086 NULL) != 0) {
1087 mdelay(1);
1088
1089 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1090 ret = -EBUSY;
1091 goto done;
1092 }
1093 }
1094
1095 i = 0;
1096 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
1097 (void **)&buf,
1098 &completed_nbytes)
1099 != 0) {
1100 mdelay(1);
1101
1102 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1103 ret = -EBUSY;
1104 goto done;
1105 }
1106 }
1107
1108 if (nbytes != completed_nbytes) {
1109 ret = -EIO;
1110 goto done;
1111 }
1112
1113 if (*buf != address) {
1114 ret = -EIO;
1115 goto done;
1116 }
1117
1118 remaining_bytes -= nbytes;
1119 address += nbytes;
1120 ce_data += nbytes;
1121 }
1122
1123 done:
1124 if (data_buf) {
1125 dma_free_coherent(ar->dev, orig_nbytes, data_buf,
1126 ce_data_base);
1127 }
1128
1129 if (ret != 0)
1130 ath10k_warn(ar, "failed to write diag value at 0x%x: %d\n",
1131 address, ret);
1132
1133 spin_unlock_bh(&ar_pci->ce_lock);
1134
1135 return ret;
1136 }
1137
1138 static int ath10k_pci_diag_write32(struct ath10k *ar, u32 address, u32 value)
1139 {
1140 __le32 val = __cpu_to_le32(value);
1141
1142 return ath10k_pci_diag_write_mem(ar, address, &val, sizeof(val));
1143 }
1144
1145 /* Called by lower (CE) layer when a send to Target completes. */
1146 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state)
1147 {
1148 struct ath10k *ar = ce_state->ar;
1149 struct sk_buff_head list;
1150 struct sk_buff *skb;
1151
1152 __skb_queue_head_init(&list);
1153 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1154 /* no need to call tx completion for NULL pointers */
1155 if (skb == NULL)
1156 continue;
1157
1158 __skb_queue_tail(&list, skb);
1159 }
1160
1161 while ((skb = __skb_dequeue(&list)))
1162 ath10k_htc_tx_completion_handler(ar, skb);
1163 }
1164
1165 static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state,
1166 void (*callback)(struct ath10k *ar,
1167 struct sk_buff *skb))
1168 {
1169 struct ath10k *ar = ce_state->ar;
1170 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1171 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1172 struct sk_buff *skb;
1173 struct sk_buff_head list;
1174 void *transfer_context;
1175 unsigned int nbytes, max_nbytes;
1176
1177 __skb_queue_head_init(&list);
1178 while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
1179 &nbytes) == 0) {
1180 skb = transfer_context;
1181 max_nbytes = skb->len + skb_tailroom(skb);
1182 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1183 max_nbytes, DMA_FROM_DEVICE);
1184
1185 if (unlikely(max_nbytes < nbytes)) {
1186 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1187 nbytes, max_nbytes);
1188 dev_kfree_skb_any(skb);
1189 continue;
1190 }
1191
1192 skb_put(skb, nbytes);
1193 __skb_queue_tail(&list, skb);
1194 }
1195
1196 while ((skb = __skb_dequeue(&list))) {
1197 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1198 ce_state->id, skb->len);
1199 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1200 skb->data, skb->len);
1201
1202 callback(ar, skb);
1203 }
1204
1205 ath10k_pci_rx_post_pipe(pipe_info);
1206 }
1207
1208 static void ath10k_pci_process_htt_rx_cb(struct ath10k_ce_pipe *ce_state,
1209 void (*callback)(struct ath10k *ar,
1210 struct sk_buff *skb))
1211 {
1212 struct ath10k *ar = ce_state->ar;
1213 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1214 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1215 struct ath10k_ce_pipe *ce_pipe = pipe_info->ce_hdl;
1216 struct sk_buff *skb;
1217 struct sk_buff_head list;
1218 void *transfer_context;
1219 unsigned int nbytes, max_nbytes, nentries;
1220 int orig_len;
1221
1222 /* No need to aquire ce_lock for CE5, since this is the only place CE5
1223 * is processed other than init and deinit. Before releasing CE5
1224 * buffers, interrupts are disabled. Thus CE5 access is serialized.
1225 */
1226 __skb_queue_head_init(&list);
1227 while (ath10k_ce_completed_recv_next_nolock(ce_state, &transfer_context,
1228 &nbytes) == 0) {
1229 skb = transfer_context;
1230 max_nbytes = skb->len + skb_tailroom(skb);
1231
1232 if (unlikely(max_nbytes < nbytes)) {
1233 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1234 nbytes, max_nbytes);
1235 continue;
1236 }
1237
1238 dma_sync_single_for_cpu(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1239 max_nbytes, DMA_FROM_DEVICE);
1240 skb_put(skb, nbytes);
1241 __skb_queue_tail(&list, skb);
1242 }
1243
1244 nentries = skb_queue_len(&list);
1245 while ((skb = __skb_dequeue(&list))) {
1246 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1247 ce_state->id, skb->len);
1248 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1249 skb->data, skb->len);
1250
1251 orig_len = skb->len;
1252 callback(ar, skb);
1253 skb_push(skb, orig_len - skb->len);
1254 skb_reset_tail_pointer(skb);
1255 skb_trim(skb, 0);
1256
1257 /*let device gain the buffer again*/
1258 dma_sync_single_for_device(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1259 skb->len + skb_tailroom(skb),
1260 DMA_FROM_DEVICE);
1261 }
1262 ath10k_ce_rx_update_write_idx(ce_pipe, nentries);
1263 }
1264
1265 /* Called by lower (CE) layer when data is received from the Target. */
1266 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1267 {
1268 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1269 }
1270
1271 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1272 {
1273 /* CE4 polling needs to be done whenever CE pipe which transports
1274 * HTT Rx (target->host) is processed.
1275 */
1276 ath10k_ce_per_engine_service(ce_state->ar, 4);
1277
1278 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1279 }
1280
1281 /* Called by lower (CE) layer when data is received from the Target.
1282 * Only 10.4 firmware uses separate CE to transfer pktlog data.
1283 */
1284 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state)
1285 {
1286 ath10k_pci_process_rx_cb(ce_state,
1287 ath10k_htt_rx_pktlog_completion_handler);
1288 }
1289
1290 /* Called by lower (CE) layer when a send to HTT Target completes. */
1291 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
1292 {
1293 struct ath10k *ar = ce_state->ar;
1294 struct sk_buff *skb;
1295
1296 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1297 /* no need to call tx completion for NULL pointers */
1298 if (!skb)
1299 continue;
1300
1301 dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr,
1302 skb->len, DMA_TO_DEVICE);
1303 ath10k_htt_hif_tx_complete(ar, skb);
1304 }
1305 }
1306
1307 static void ath10k_pci_htt_rx_deliver(struct ath10k *ar, struct sk_buff *skb)
1308 {
1309 skb_pull(skb, sizeof(struct ath10k_htc_hdr));
1310 ath10k_htt_t2h_msg_handler(ar, skb);
1311 }
1312
1313 /* Called by lower (CE) layer when HTT data is received from the Target. */
1314 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state)
1315 {
1316 /* CE4 polling needs to be done whenever CE pipe which transports
1317 * HTT Rx (target->host) is processed.
1318 */
1319 ath10k_ce_per_engine_service(ce_state->ar, 4);
1320
1321 ath10k_pci_process_htt_rx_cb(ce_state, ath10k_pci_htt_rx_deliver);
1322 }
1323
1324 int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
1325 struct ath10k_hif_sg_item *items, int n_items)
1326 {
1327 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1328 struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id];
1329 struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl;
1330 struct ath10k_ce_ring *src_ring = ce_pipe->src_ring;
1331 unsigned int nentries_mask;
1332 unsigned int sw_index;
1333 unsigned int write_index;
1334 int err, i = 0;
1335
1336 spin_lock_bh(&ar_pci->ce_lock);
1337
1338 nentries_mask = src_ring->nentries_mask;
1339 sw_index = src_ring->sw_index;
1340 write_index = src_ring->write_index;
1341
1342 if (unlikely(CE_RING_DELTA(nentries_mask,
1343 write_index, sw_index - 1) < n_items)) {
1344 err = -ENOBUFS;
1345 goto err;
1346 }
1347
1348 for (i = 0; i < n_items - 1; i++) {
1349 ath10k_dbg(ar, ATH10K_DBG_PCI,
1350 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1351 i, items[i].paddr, items[i].len, n_items);
1352 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1353 items[i].vaddr, items[i].len);
1354
1355 err = ath10k_ce_send_nolock(ce_pipe,
1356 items[i].transfer_context,
1357 items[i].paddr,
1358 items[i].len,
1359 items[i].transfer_id,
1360 CE_SEND_FLAG_GATHER);
1361 if (err)
1362 goto err;
1363 }
1364
1365 /* `i` is equal to `n_items -1` after for() */
1366
1367 ath10k_dbg(ar, ATH10K_DBG_PCI,
1368 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1369 i, items[i].paddr, items[i].len, n_items);
1370 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1371 items[i].vaddr, items[i].len);
1372
1373 err = ath10k_ce_send_nolock(ce_pipe,
1374 items[i].transfer_context,
1375 items[i].paddr,
1376 items[i].len,
1377 items[i].transfer_id,
1378 0);
1379 if (err)
1380 goto err;
1381
1382 spin_unlock_bh(&ar_pci->ce_lock);
1383 return 0;
1384
1385 err:
1386 for (; i > 0; i--)
1387 __ath10k_ce_send_revert(ce_pipe);
1388
1389 spin_unlock_bh(&ar_pci->ce_lock);
1390 return err;
1391 }
1392
1393 int ath10k_pci_hif_diag_read(struct ath10k *ar, u32 address, void *buf,
1394 size_t buf_len)
1395 {
1396 return ath10k_pci_diag_read_mem(ar, address, buf, buf_len);
1397 }
1398
1399 u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
1400 {
1401 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1402
1403 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get free queue number\n");
1404
1405 return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
1406 }
1407
1408 static void ath10k_pci_dump_registers(struct ath10k *ar,
1409 struct ath10k_fw_crash_data *crash_data)
1410 {
1411 __le32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
1412 int i, ret;
1413
1414 lockdep_assert_held(&ar->data_lock);
1415
1416 ret = ath10k_pci_diag_read_hi(ar, &reg_dump_values[0],
1417 hi_failure_state,
1418 REG_DUMP_COUNT_QCA988X * sizeof(__le32));
1419 if (ret) {
1420 ath10k_err(ar, "failed to read firmware dump area: %d\n", ret);
1421 return;
1422 }
1423
1424 BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4);
1425
1426 ath10k_err(ar, "firmware register dump:\n");
1427 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4)
1428 ath10k_err(ar, "[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n",
1429 i,
1430 __le32_to_cpu(reg_dump_values[i]),
1431 __le32_to_cpu(reg_dump_values[i + 1]),
1432 __le32_to_cpu(reg_dump_values[i + 2]),
1433 __le32_to_cpu(reg_dump_values[i + 3]));
1434
1435 if (!crash_data)
1436 return;
1437
1438 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++)
1439 crash_data->registers[i] = reg_dump_values[i];
1440 }
1441
1442 static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
1443 {
1444 struct ath10k_fw_crash_data *crash_data;
1445 char uuid[50];
1446
1447 spin_lock_bh(&ar->data_lock);
1448
1449 ar->stats.fw_crash_counter++;
1450
1451 crash_data = ath10k_debug_get_new_fw_crash_data(ar);
1452
1453 if (crash_data)
1454 scnprintf(uuid, sizeof(uuid), "%pUl", &crash_data->uuid);
1455 else
1456 scnprintf(uuid, sizeof(uuid), "n/a");
1457
1458 ath10k_err(ar, "firmware crashed! (uuid %s)\n", uuid);
1459 ath10k_print_driver_info(ar);
1460 ath10k_pci_dump_registers(ar, crash_data);
1461
1462 spin_unlock_bh(&ar->data_lock);
1463
1464 queue_work(ar->workqueue, &ar->restart_work);
1465 }
1466
1467 void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe,
1468 int force)
1469 {
1470 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif send complete check\n");
1471
1472 if (!force) {
1473 int resources;
1474 /*
1475 * Decide whether to actually poll for completions, or just
1476 * wait for a later chance.
1477 * If there seem to be plenty of resources left, then just wait
1478 * since checking involves reading a CE register, which is a
1479 * relatively expensive operation.
1480 */
1481 resources = ath10k_pci_hif_get_free_queue_number(ar, pipe);
1482
1483 /*
1484 * If at least 50% of the total resources are still available,
1485 * don't bother checking again yet.
1486 */
1487 if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
1488 return;
1489 }
1490 ath10k_ce_per_engine_service(ar, pipe);
1491 }
1492
1493 void ath10k_pci_kill_tasklet(struct ath10k *ar)
1494 {
1495 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1496
1497 tasklet_kill(&ar_pci->intr_tq);
1498
1499 del_timer_sync(&ar_pci->rx_post_retry);
1500 }
1501
1502 int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar, u16 service_id,
1503 u8 *ul_pipe, u8 *dl_pipe)
1504 {
1505 const struct service_to_pipe *entry;
1506 bool ul_set = false, dl_set = false;
1507 int i;
1508
1509 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif map service\n");
1510
1511 for (i = 0; i < ARRAY_SIZE(target_service_to_ce_map_wlan); i++) {
1512 entry = &target_service_to_ce_map_wlan[i];
1513
1514 if (__le32_to_cpu(entry->service_id) != service_id)
1515 continue;
1516
1517 switch (__le32_to_cpu(entry->pipedir)) {
1518 case PIPEDIR_NONE:
1519 break;
1520 case PIPEDIR_IN:
1521 WARN_ON(dl_set);
1522 *dl_pipe = __le32_to_cpu(entry->pipenum);
1523 dl_set = true;
1524 break;
1525 case PIPEDIR_OUT:
1526 WARN_ON(ul_set);
1527 *ul_pipe = __le32_to_cpu(entry->pipenum);
1528 ul_set = true;
1529 break;
1530 case PIPEDIR_INOUT:
1531 WARN_ON(dl_set);
1532 WARN_ON(ul_set);
1533 *dl_pipe = __le32_to_cpu(entry->pipenum);
1534 *ul_pipe = __le32_to_cpu(entry->pipenum);
1535 dl_set = true;
1536 ul_set = true;
1537 break;
1538 }
1539 }
1540
1541 if (WARN_ON(!ul_set || !dl_set))
1542 return -ENOENT;
1543
1544 return 0;
1545 }
1546
1547 void ath10k_pci_hif_get_default_pipe(struct ath10k *ar,
1548 u8 *ul_pipe, u8 *dl_pipe)
1549 {
1550 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get default pipe\n");
1551
1552 (void)ath10k_pci_hif_map_service_to_pipe(ar,
1553 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1554 ul_pipe, dl_pipe);
1555 }
1556
1557 static void ath10k_pci_irq_msi_fw_mask(struct ath10k *ar)
1558 {
1559 u32 val;
1560
1561 switch (ar->hw_rev) {
1562 case ATH10K_HW_QCA988X:
1563 case ATH10K_HW_QCA6174:
1564 case ATH10K_HW_QCA9377:
1565 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1566 CORE_CTRL_ADDRESS);
1567 val &= ~CORE_CTRL_PCIE_REG_31_MASK;
1568 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1569 CORE_CTRL_ADDRESS, val);
1570 break;
1571 case ATH10K_HW_QCA99X0:
1572 case ATH10K_HW_QCA4019:
1573 /* TODO: Find appropriate register configuration for QCA99X0
1574 * to mask irq/MSI.
1575 */
1576 break;
1577 }
1578 }
1579
1580 static void ath10k_pci_irq_msi_fw_unmask(struct ath10k *ar)
1581 {
1582 u32 val;
1583
1584 switch (ar->hw_rev) {
1585 case ATH10K_HW_QCA988X:
1586 case ATH10K_HW_QCA6174:
1587 case ATH10K_HW_QCA9377:
1588 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1589 CORE_CTRL_ADDRESS);
1590 val |= CORE_CTRL_PCIE_REG_31_MASK;
1591 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1592 CORE_CTRL_ADDRESS, val);
1593 break;
1594 case ATH10K_HW_QCA99X0:
1595 case ATH10K_HW_QCA4019:
1596 /* TODO: Find appropriate register configuration for QCA99X0
1597 * to unmask irq/MSI.
1598 */
1599 break;
1600 }
1601 }
1602
1603 static void ath10k_pci_irq_disable(struct ath10k *ar)
1604 {
1605 ath10k_ce_disable_interrupts(ar);
1606 ath10k_pci_disable_and_clear_legacy_irq(ar);
1607 ath10k_pci_irq_msi_fw_mask(ar);
1608 }
1609
1610 static void ath10k_pci_irq_sync(struct ath10k *ar)
1611 {
1612 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1613
1614 synchronize_irq(ar_pci->pdev->irq);
1615 }
1616
1617 static void ath10k_pci_irq_enable(struct ath10k *ar)
1618 {
1619 ath10k_ce_enable_interrupts(ar);
1620 ath10k_pci_enable_legacy_irq(ar);
1621 ath10k_pci_irq_msi_fw_unmask(ar);
1622 }
1623
1624 static int ath10k_pci_hif_start(struct ath10k *ar)
1625 {
1626 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1627
1628 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n");
1629
1630 ath10k_pci_irq_enable(ar);
1631 ath10k_pci_rx_post(ar);
1632
1633 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
1634 ar_pci->link_ctl);
1635
1636 return 0;
1637 }
1638
1639 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1640 {
1641 struct ath10k *ar;
1642 struct ath10k_ce_pipe *ce_pipe;
1643 struct ath10k_ce_ring *ce_ring;
1644 struct sk_buff *skb;
1645 int i;
1646
1647 ar = pci_pipe->hif_ce_state;
1648 ce_pipe = pci_pipe->ce_hdl;
1649 ce_ring = ce_pipe->dest_ring;
1650
1651 if (!ce_ring)
1652 return;
1653
1654 if (!pci_pipe->buf_sz)
1655 return;
1656
1657 for (i = 0; i < ce_ring->nentries; i++) {
1658 skb = ce_ring->per_transfer_context[i];
1659 if (!skb)
1660 continue;
1661
1662 ce_ring->per_transfer_context[i] = NULL;
1663
1664 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1665 skb->len + skb_tailroom(skb),
1666 DMA_FROM_DEVICE);
1667 dev_kfree_skb_any(skb);
1668 }
1669 }
1670
1671 static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1672 {
1673 struct ath10k *ar;
1674 struct ath10k_pci *ar_pci;
1675 struct ath10k_ce_pipe *ce_pipe;
1676 struct ath10k_ce_ring *ce_ring;
1677 struct sk_buff *skb;
1678 int i;
1679
1680 ar = pci_pipe->hif_ce_state;
1681 ar_pci = ath10k_pci_priv(ar);
1682 ce_pipe = pci_pipe->ce_hdl;
1683 ce_ring = ce_pipe->src_ring;
1684
1685 if (!ce_ring)
1686 return;
1687
1688 if (!pci_pipe->buf_sz)
1689 return;
1690
1691 for (i = 0; i < ce_ring->nentries; i++) {
1692 skb = ce_ring->per_transfer_context[i];
1693 if (!skb)
1694 continue;
1695
1696 ce_ring->per_transfer_context[i] = NULL;
1697
1698 ath10k_htc_tx_completion_handler(ar, skb);
1699 }
1700 }
1701
1702 /*
1703 * Cleanup residual buffers for device shutdown:
1704 * buffers that were enqueued for receive
1705 * buffers that were to be sent
1706 * Note: Buffers that had completed but which were
1707 * not yet processed are on a completion queue. They
1708 * are handled when the completion thread shuts down.
1709 */
1710 static void ath10k_pci_buffer_cleanup(struct ath10k *ar)
1711 {
1712 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1713 int pipe_num;
1714
1715 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1716 struct ath10k_pci_pipe *pipe_info;
1717
1718 pipe_info = &ar_pci->pipe_info[pipe_num];
1719 ath10k_pci_rx_pipe_cleanup(pipe_info);
1720 ath10k_pci_tx_pipe_cleanup(pipe_info);
1721 }
1722 }
1723
1724 void ath10k_pci_ce_deinit(struct ath10k *ar)
1725 {
1726 int i;
1727
1728 for (i = 0; i < CE_COUNT; i++)
1729 ath10k_ce_deinit_pipe(ar, i);
1730 }
1731
1732 void ath10k_pci_flush(struct ath10k *ar)
1733 {
1734 ath10k_pci_kill_tasklet(ar);
1735 ath10k_pci_buffer_cleanup(ar);
1736 }
1737
1738 static void ath10k_pci_hif_stop(struct ath10k *ar)
1739 {
1740 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1741 unsigned long flags;
1742
1743 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n");
1744
1745 /* Most likely the device has HTT Rx ring configured. The only way to
1746 * prevent the device from accessing (and possible corrupting) host
1747 * memory is to reset the chip now.
1748 *
1749 * There's also no known way of masking MSI interrupts on the device.
1750 * For ranged MSI the CE-related interrupts can be masked. However
1751 * regardless how many MSI interrupts are assigned the first one
1752 * is always used for firmware indications (crashes) and cannot be
1753 * masked. To prevent the device from asserting the interrupt reset it
1754 * before proceeding with cleanup.
1755 */
1756 ath10k_pci_safe_chip_reset(ar);
1757
1758 ath10k_pci_irq_disable(ar);
1759 ath10k_pci_irq_sync(ar);
1760 ath10k_pci_flush(ar);
1761
1762 spin_lock_irqsave(&ar_pci->ps_lock, flags);
1763 WARN_ON(ar_pci->ps_wake_refcount > 0);
1764 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
1765 }
1766
1767 int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
1768 void *req, u32 req_len,
1769 void *resp, u32 *resp_len)
1770 {
1771 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1772 struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG];
1773 struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST];
1774 struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl;
1775 struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl;
1776 dma_addr_t req_paddr = 0;
1777 dma_addr_t resp_paddr = 0;
1778 struct bmi_xfer xfer = {};
1779 void *treq, *tresp = NULL;
1780 int ret = 0;
1781
1782 might_sleep();
1783
1784 if (resp && !resp_len)
1785 return -EINVAL;
1786
1787 if (resp && resp_len && *resp_len == 0)
1788 return -EINVAL;
1789
1790 treq = kmemdup(req, req_len, GFP_KERNEL);
1791 if (!treq)
1792 return -ENOMEM;
1793
1794 req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
1795 ret = dma_mapping_error(ar->dev, req_paddr);
1796 if (ret) {
1797 ret = -EIO;
1798 goto err_dma;
1799 }
1800
1801 if (resp && resp_len) {
1802 tresp = kzalloc(*resp_len, GFP_KERNEL);
1803 if (!tresp) {
1804 ret = -ENOMEM;
1805 goto err_req;
1806 }
1807
1808 resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
1809 DMA_FROM_DEVICE);
1810 ret = dma_mapping_error(ar->dev, resp_paddr);
1811 if (ret) {
1812 ret = -EIO;
1813 goto err_req;
1814 }
1815
1816 xfer.wait_for_resp = true;
1817 xfer.resp_len = 0;
1818
1819 ath10k_ce_rx_post_buf(ce_rx, &xfer, resp_paddr);
1820 }
1821
1822 ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0);
1823 if (ret)
1824 goto err_resp;
1825
1826 ret = ath10k_pci_bmi_wait(ce_tx, ce_rx, &xfer);
1827 if (ret) {
1828 u32 unused_buffer;
1829 unsigned int unused_nbytes;
1830 unsigned int unused_id;
1831
1832 ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer,
1833 &unused_nbytes, &unused_id);
1834 } else {
1835 /* non-zero means we did not time out */
1836 ret = 0;
1837 }
1838
1839 err_resp:
1840 if (resp) {
1841 u32 unused_buffer;
1842
1843 ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer);
1844 dma_unmap_single(ar->dev, resp_paddr,
1845 *resp_len, DMA_FROM_DEVICE);
1846 }
1847 err_req:
1848 dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE);
1849
1850 if (ret == 0 && resp_len) {
1851 *resp_len = min(*resp_len, xfer.resp_len);
1852 memcpy(resp, tresp, xfer.resp_len);
1853 }
1854 err_dma:
1855 kfree(treq);
1856 kfree(tresp);
1857
1858 return ret;
1859 }
1860
1861 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
1862 {
1863 struct bmi_xfer *xfer;
1864
1865 if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer))
1866 return;
1867
1868 xfer->tx_done = true;
1869 }
1870
1871 static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state)
1872 {
1873 struct ath10k *ar = ce_state->ar;
1874 struct bmi_xfer *xfer;
1875 unsigned int nbytes;
1876
1877 if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer,
1878 &nbytes))
1879 return;
1880
1881 if (WARN_ON_ONCE(!xfer))
1882 return;
1883
1884 if (!xfer->wait_for_resp) {
1885 ath10k_warn(ar, "unexpected: BMI data received; ignoring\n");
1886 return;
1887 }
1888
1889 xfer->resp_len = nbytes;
1890 xfer->rx_done = true;
1891 }
1892
1893 static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
1894 struct ath10k_ce_pipe *rx_pipe,
1895 struct bmi_xfer *xfer)
1896 {
1897 unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
1898
1899 while (time_before_eq(jiffies, timeout)) {
1900 ath10k_pci_bmi_send_done(tx_pipe);
1901 ath10k_pci_bmi_recv_data(rx_pipe);
1902
1903 if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp))
1904 return 0;
1905
1906 schedule();
1907 }
1908
1909 return -ETIMEDOUT;
1910 }
1911
1912 /*
1913 * Send an interrupt to the device to wake up the Target CPU
1914 * so it has an opportunity to notice any changed state.
1915 */
1916 static int ath10k_pci_wake_target_cpu(struct ath10k *ar)
1917 {
1918 u32 addr, val;
1919
1920 addr = SOC_CORE_BASE_ADDRESS | CORE_CTRL_ADDRESS;
1921 val = ath10k_pci_read32(ar, addr);
1922 val |= CORE_CTRL_CPU_INTR_MASK;
1923 ath10k_pci_write32(ar, addr, val);
1924
1925 return 0;
1926 }
1927
1928 static int ath10k_pci_get_num_banks(struct ath10k *ar)
1929 {
1930 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1931
1932 switch (ar_pci->pdev->device) {
1933 case QCA988X_2_0_DEVICE_ID:
1934 case QCA99X0_2_0_DEVICE_ID:
1935 return 1;
1936 case QCA6164_2_1_DEVICE_ID:
1937 case QCA6174_2_1_DEVICE_ID:
1938 switch (MS(ar->chip_id, SOC_CHIP_ID_REV)) {
1939 case QCA6174_HW_1_0_CHIP_ID_REV:
1940 case QCA6174_HW_1_1_CHIP_ID_REV:
1941 case QCA6174_HW_2_1_CHIP_ID_REV:
1942 case QCA6174_HW_2_2_CHIP_ID_REV:
1943 return 3;
1944 case QCA6174_HW_1_3_CHIP_ID_REV:
1945 return 2;
1946 case QCA6174_HW_3_0_CHIP_ID_REV:
1947 case QCA6174_HW_3_1_CHIP_ID_REV:
1948 case QCA6174_HW_3_2_CHIP_ID_REV:
1949 return 9;
1950 }
1951 break;
1952 case QCA9377_1_0_DEVICE_ID:
1953 return 2;
1954 }
1955
1956 ath10k_warn(ar, "unknown number of banks, assuming 1\n");
1957 return 1;
1958 }
1959
1960 static int ath10k_bus_get_num_banks(struct ath10k *ar)
1961 {
1962 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1963
1964 return ar_pci->bus_ops->get_num_banks(ar);
1965 }
1966
1967 int ath10k_pci_init_config(struct ath10k *ar)
1968 {
1969 u32 interconnect_targ_addr;
1970 u32 pcie_state_targ_addr = 0;
1971 u32 pipe_cfg_targ_addr = 0;
1972 u32 svc_to_pipe_map = 0;
1973 u32 pcie_config_flags = 0;
1974 u32 ealloc_value;
1975 u32 ealloc_targ_addr;
1976 u32 flag2_value;
1977 u32 flag2_targ_addr;
1978 int ret = 0;
1979
1980 /* Download to Target the CE Config and the service-to-CE map */
1981 interconnect_targ_addr =
1982 host_interest_item_address(HI_ITEM(hi_interconnect_state));
1983
1984 /* Supply Target-side CE configuration */
1985 ret = ath10k_pci_diag_read32(ar, interconnect_targ_addr,
1986 &pcie_state_targ_addr);
1987 if (ret != 0) {
1988 ath10k_err(ar, "Failed to get pcie state addr: %d\n", ret);
1989 return ret;
1990 }
1991
1992 if (pcie_state_targ_addr == 0) {
1993 ret = -EIO;
1994 ath10k_err(ar, "Invalid pcie state addr\n");
1995 return ret;
1996 }
1997
1998 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
1999 offsetof(struct pcie_state,
2000 pipe_cfg_addr)),
2001 &pipe_cfg_targ_addr);
2002 if (ret != 0) {
2003 ath10k_err(ar, "Failed to get pipe cfg addr: %d\n", ret);
2004 return ret;
2005 }
2006
2007 if (pipe_cfg_targ_addr == 0) {
2008 ret = -EIO;
2009 ath10k_err(ar, "Invalid pipe cfg addr\n");
2010 return ret;
2011 }
2012
2013 ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr,
2014 target_ce_config_wlan,
2015 sizeof(struct ce_pipe_config) *
2016 NUM_TARGET_CE_CONFIG_WLAN);
2017
2018 if (ret != 0) {
2019 ath10k_err(ar, "Failed to write pipe cfg: %d\n", ret);
2020 return ret;
2021 }
2022
2023 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2024 offsetof(struct pcie_state,
2025 svc_to_pipe_map)),
2026 &svc_to_pipe_map);
2027 if (ret != 0) {
2028 ath10k_err(ar, "Failed to get svc/pipe map: %d\n", ret);
2029 return ret;
2030 }
2031
2032 if (svc_to_pipe_map == 0) {
2033 ret = -EIO;
2034 ath10k_err(ar, "Invalid svc_to_pipe map\n");
2035 return ret;
2036 }
2037
2038 ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map,
2039 target_service_to_ce_map_wlan,
2040 sizeof(target_service_to_ce_map_wlan));
2041 if (ret != 0) {
2042 ath10k_err(ar, "Failed to write svc/pipe map: %d\n", ret);
2043 return ret;
2044 }
2045
2046 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2047 offsetof(struct pcie_state,
2048 config_flags)),
2049 &pcie_config_flags);
2050 if (ret != 0) {
2051 ath10k_err(ar, "Failed to get pcie config_flags: %d\n", ret);
2052 return ret;
2053 }
2054
2055 pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1;
2056
2057 ret = ath10k_pci_diag_write32(ar, (pcie_state_targ_addr +
2058 offsetof(struct pcie_state,
2059 config_flags)),
2060 pcie_config_flags);
2061 if (ret != 0) {
2062 ath10k_err(ar, "Failed to write pcie config_flags: %d\n", ret);
2063 return ret;
2064 }
2065
2066 /* configure early allocation */
2067 ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc));
2068
2069 ret = ath10k_pci_diag_read32(ar, ealloc_targ_addr, &ealloc_value);
2070 if (ret != 0) {
2071 ath10k_err(ar, "Faile to get early alloc val: %d\n", ret);
2072 return ret;
2073 }
2074
2075 /* first bank is switched to IRAM */
2076 ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) &
2077 HI_EARLY_ALLOC_MAGIC_MASK);
2078 ealloc_value |= ((ath10k_bus_get_num_banks(ar) <<
2079 HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) &
2080 HI_EARLY_ALLOC_IRAM_BANKS_MASK);
2081
2082 ret = ath10k_pci_diag_write32(ar, ealloc_targ_addr, ealloc_value);
2083 if (ret != 0) {
2084 ath10k_err(ar, "Failed to set early alloc val: %d\n", ret);
2085 return ret;
2086 }
2087
2088 /* Tell Target to proceed with initialization */
2089 flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2));
2090
2091 ret = ath10k_pci_diag_read32(ar, flag2_targ_addr, &flag2_value);
2092 if (ret != 0) {
2093 ath10k_err(ar, "Failed to get option val: %d\n", ret);
2094 return ret;
2095 }
2096
2097 flag2_value |= HI_OPTION_EARLY_CFG_DONE;
2098
2099 ret = ath10k_pci_diag_write32(ar, flag2_targ_addr, flag2_value);
2100 if (ret != 0) {
2101 ath10k_err(ar, "Failed to set option val: %d\n", ret);
2102 return ret;
2103 }
2104
2105 return 0;
2106 }
2107
2108 static void ath10k_pci_override_ce_config(struct ath10k *ar)
2109 {
2110 struct ce_attr *attr;
2111 struct ce_pipe_config *config;
2112
2113 /* For QCA6174 we're overriding the Copy Engine 5 configuration,
2114 * since it is currently used for other feature.
2115 */
2116
2117 /* Override Host's Copy Engine 5 configuration */
2118 attr = &host_ce_config_wlan[5];
2119 attr->src_sz_max = 0;
2120 attr->dest_nentries = 0;
2121
2122 /* Override Target firmware's Copy Engine configuration */
2123 config = &target_ce_config_wlan[5];
2124 config->pipedir = __cpu_to_le32(PIPEDIR_OUT);
2125 config->nbytes_max = __cpu_to_le32(2048);
2126
2127 /* Map from service/endpoint to Copy Engine */
2128 target_service_to_ce_map_wlan[15].pipenum = __cpu_to_le32(1);
2129 }
2130
2131 int ath10k_pci_alloc_pipes(struct ath10k *ar)
2132 {
2133 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2134 struct ath10k_pci_pipe *pipe;
2135 int i, ret;
2136
2137 for (i = 0; i < CE_COUNT; i++) {
2138 pipe = &ar_pci->pipe_info[i];
2139 pipe->ce_hdl = &ar_pci->ce_states[i];
2140 pipe->pipe_num = i;
2141 pipe->hif_ce_state = ar;
2142
2143 ret = ath10k_ce_alloc_pipe(ar, i, &host_ce_config_wlan[i]);
2144 if (ret) {
2145 ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n",
2146 i, ret);
2147 return ret;
2148 }
2149
2150 /* Last CE is Diagnostic Window */
2151 if (i == CE_DIAG_PIPE) {
2152 ar_pci->ce_diag = pipe->ce_hdl;
2153 continue;
2154 }
2155
2156 pipe->buf_sz = (size_t)(host_ce_config_wlan[i].src_sz_max);
2157 }
2158
2159 return 0;
2160 }
2161
2162 void ath10k_pci_free_pipes(struct ath10k *ar)
2163 {
2164 int i;
2165
2166 for (i = 0; i < CE_COUNT; i++)
2167 ath10k_ce_free_pipe(ar, i);
2168 }
2169
2170 int ath10k_pci_init_pipes(struct ath10k *ar)
2171 {
2172 int i, ret;
2173
2174 for (i = 0; i < CE_COUNT; i++) {
2175 ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
2176 if (ret) {
2177 ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
2178 i, ret);
2179 return ret;
2180 }
2181 }
2182
2183 return 0;
2184 }
2185
2186 static bool ath10k_pci_has_fw_crashed(struct ath10k *ar)
2187 {
2188 return ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS) &
2189 FW_IND_EVENT_PENDING;
2190 }
2191
2192 static void ath10k_pci_fw_crashed_clear(struct ath10k *ar)
2193 {
2194 u32 val;
2195
2196 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2197 val &= ~FW_IND_EVENT_PENDING;
2198 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, val);
2199 }
2200
2201 /* this function effectively clears target memory controller assert line */
2202 static void ath10k_pci_warm_reset_si0(struct ath10k *ar)
2203 {
2204 u32 val;
2205
2206 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2207 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2208 val | SOC_RESET_CONTROL_SI0_RST_MASK);
2209 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2210
2211 msleep(10);
2212
2213 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2214 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2215 val & ~SOC_RESET_CONTROL_SI0_RST_MASK);
2216 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2217
2218 msleep(10);
2219 }
2220
2221 static void ath10k_pci_warm_reset_cpu(struct ath10k *ar)
2222 {
2223 u32 val;
2224
2225 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0);
2226
2227 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2228 SOC_RESET_CONTROL_ADDRESS);
2229 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2230 val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK);
2231 }
2232
2233 static void ath10k_pci_warm_reset_ce(struct ath10k *ar)
2234 {
2235 u32 val;
2236
2237 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2238 SOC_RESET_CONTROL_ADDRESS);
2239
2240 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2241 val | SOC_RESET_CONTROL_CE_RST_MASK);
2242 msleep(10);
2243 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2244 val & ~SOC_RESET_CONTROL_CE_RST_MASK);
2245 }
2246
2247 static void ath10k_pci_warm_reset_clear_lf(struct ath10k *ar)
2248 {
2249 u32 val;
2250
2251 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2252 SOC_LF_TIMER_CONTROL0_ADDRESS);
2253 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS +
2254 SOC_LF_TIMER_CONTROL0_ADDRESS,
2255 val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK);
2256 }
2257
2258 static int ath10k_pci_warm_reset(struct ath10k *ar)
2259 {
2260 int ret;
2261
2262 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n");
2263
2264 spin_lock_bh(&ar->data_lock);
2265 ar->stats.fw_warm_reset_counter++;
2266 spin_unlock_bh(&ar->data_lock);
2267
2268 ath10k_pci_irq_disable(ar);
2269
2270 /* Make sure the target CPU is not doing anything dangerous, e.g. if it
2271 * were to access copy engine while host performs copy engine reset
2272 * then it is possible for the device to confuse pci-e controller to
2273 * the point of bringing host system to a complete stop (i.e. hang).
2274 */
2275 ath10k_pci_warm_reset_si0(ar);
2276 ath10k_pci_warm_reset_cpu(ar);
2277 ath10k_pci_init_pipes(ar);
2278 ath10k_pci_wait_for_target_init(ar);
2279
2280 ath10k_pci_warm_reset_clear_lf(ar);
2281 ath10k_pci_warm_reset_ce(ar);
2282 ath10k_pci_warm_reset_cpu(ar);
2283 ath10k_pci_init_pipes(ar);
2284
2285 ret = ath10k_pci_wait_for_target_init(ar);
2286 if (ret) {
2287 ath10k_warn(ar, "failed to wait for target init: %d\n", ret);
2288 return ret;
2289 }
2290
2291 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset complete\n");
2292
2293 return 0;
2294 }
2295
2296 static int ath10k_pci_safe_chip_reset(struct ath10k *ar)
2297 {
2298 if (QCA_REV_988X(ar) || QCA_REV_6174(ar)) {
2299 return ath10k_pci_warm_reset(ar);
2300 } else if (QCA_REV_99X0(ar)) {
2301 ath10k_pci_irq_disable(ar);
2302 return ath10k_pci_qca99x0_chip_reset(ar);
2303 } else {
2304 return -ENOTSUPP;
2305 }
2306 }
2307
2308 static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar)
2309 {
2310 int i, ret;
2311 u32 val;
2312
2313 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot 988x chip reset\n");
2314
2315 /* Some hardware revisions (e.g. CUS223v2) has issues with cold reset.
2316 * It is thus preferred to use warm reset which is safer but may not be
2317 * able to recover the device from all possible fail scenarios.
2318 *
2319 * Warm reset doesn't always work on first try so attempt it a few
2320 * times before giving up.
2321 */
2322 for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) {
2323 ret = ath10k_pci_warm_reset(ar);
2324 if (ret) {
2325 ath10k_warn(ar, "failed to warm reset attempt %d of %d: %d\n",
2326 i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS,
2327 ret);
2328 continue;
2329 }
2330
2331 /* FIXME: Sometimes copy engine doesn't recover after warm
2332 * reset. In most cases this needs cold reset. In some of these
2333 * cases the device is in such a state that a cold reset may
2334 * lock up the host.
2335 *
2336 * Reading any host interest register via copy engine is
2337 * sufficient to verify if device is capable of booting
2338 * firmware blob.
2339 */
2340 ret = ath10k_pci_init_pipes(ar);
2341 if (ret) {
2342 ath10k_warn(ar, "failed to init copy engine: %d\n",
2343 ret);
2344 continue;
2345 }
2346
2347 ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS,
2348 &val);
2349 if (ret) {
2350 ath10k_warn(ar, "failed to poke copy engine: %d\n",
2351 ret);
2352 continue;
2353 }
2354
2355 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip reset complete (warm)\n");
2356 return 0;
2357 }
2358
2359 if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) {
2360 ath10k_warn(ar, "refusing cold reset as requested\n");
2361 return -EPERM;
2362 }
2363
2364 ret = ath10k_pci_cold_reset(ar);
2365 if (ret) {
2366 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2367 return ret;
2368 }
2369
2370 ret = ath10k_pci_wait_for_target_init(ar);
2371 if (ret) {
2372 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2373 ret);
2374 return ret;
2375 }
2376
2377 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca988x chip reset complete (cold)\n");
2378
2379 return 0;
2380 }
2381
2382 static int ath10k_pci_qca6174_chip_reset(struct ath10k *ar)
2383 {
2384 int ret;
2385
2386 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset\n");
2387
2388 /* FIXME: QCA6174 requires cold + warm reset to work. */
2389
2390 ret = ath10k_pci_cold_reset(ar);
2391 if (ret) {
2392 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2393 return ret;
2394 }
2395
2396 ret = ath10k_pci_wait_for_target_init(ar);
2397 if (ret) {
2398 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2399 ret);
2400 return ret;
2401 }
2402
2403 ret = ath10k_pci_warm_reset(ar);
2404 if (ret) {
2405 ath10k_warn(ar, "failed to warm reset: %d\n", ret);
2406 return ret;
2407 }
2408
2409 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset complete (cold)\n");
2410
2411 return 0;
2412 }
2413
2414 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar)
2415 {
2416 int ret;
2417
2418 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset\n");
2419
2420 ret = ath10k_pci_cold_reset(ar);
2421 if (ret) {
2422 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2423 return ret;
2424 }
2425
2426 ret = ath10k_pci_wait_for_target_init(ar);
2427 if (ret) {
2428 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2429 ret);
2430 return ret;
2431 }
2432
2433 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset complete (cold)\n");
2434
2435 return 0;
2436 }
2437
2438 static int ath10k_pci_chip_reset(struct ath10k *ar)
2439 {
2440 if (QCA_REV_988X(ar))
2441 return ath10k_pci_qca988x_chip_reset(ar);
2442 else if (QCA_REV_6174(ar))
2443 return ath10k_pci_qca6174_chip_reset(ar);
2444 else if (QCA_REV_9377(ar))
2445 return ath10k_pci_qca6174_chip_reset(ar);
2446 else if (QCA_REV_99X0(ar))
2447 return ath10k_pci_qca99x0_chip_reset(ar);
2448 else
2449 return -ENOTSUPP;
2450 }
2451
2452 static int ath10k_pci_hif_power_up(struct ath10k *ar)
2453 {
2454 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2455 int ret;
2456
2457 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power up\n");
2458
2459 pcie_capability_read_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2460 &ar_pci->link_ctl);
2461 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2462 ar_pci->link_ctl & ~PCI_EXP_LNKCTL_ASPMC);
2463
2464 /*
2465 * Bring the target up cleanly.
2466 *
2467 * The target may be in an undefined state with an AUX-powered Target
2468 * and a Host in WoW mode. If the Host crashes, loses power, or is
2469 * restarted (without unloading the driver) then the Target is left
2470 * (aux) powered and running. On a subsequent driver load, the Target
2471 * is in an unexpected state. We try to catch that here in order to
2472 * reset the Target and retry the probe.
2473 */
2474 ret = ath10k_pci_chip_reset(ar);
2475 if (ret) {
2476 if (ath10k_pci_has_fw_crashed(ar)) {
2477 ath10k_warn(ar, "firmware crashed during chip reset\n");
2478 ath10k_pci_fw_crashed_clear(ar);
2479 ath10k_pci_fw_crashed_dump(ar);
2480 }
2481
2482 ath10k_err(ar, "failed to reset chip: %d\n", ret);
2483 goto err_sleep;
2484 }
2485
2486 ret = ath10k_pci_init_pipes(ar);
2487 if (ret) {
2488 ath10k_err(ar, "failed to initialize CE: %d\n", ret);
2489 goto err_sleep;
2490 }
2491
2492 ret = ath10k_pci_init_config(ar);
2493 if (ret) {
2494 ath10k_err(ar, "failed to setup init config: %d\n", ret);
2495 goto err_ce;
2496 }
2497
2498 ret = ath10k_pci_wake_target_cpu(ar);
2499 if (ret) {
2500 ath10k_err(ar, "could not wake up target CPU: %d\n", ret);
2501 goto err_ce;
2502 }
2503
2504 return 0;
2505
2506 err_ce:
2507 ath10k_pci_ce_deinit(ar);
2508
2509 err_sleep:
2510 return ret;
2511 }
2512
2513 void ath10k_pci_hif_power_down(struct ath10k *ar)
2514 {
2515 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n");
2516
2517 /* Currently hif_power_up performs effectively a reset and hif_stop
2518 * resets the chip as well so there's no point in resetting here.
2519 */
2520 }
2521
2522 #ifdef CONFIG_PM
2523
2524 static int ath10k_pci_hif_suspend(struct ath10k *ar)
2525 {
2526 /* The grace timer can still be counting down and ar->ps_awake be true.
2527 * It is known that the device may be asleep after resuming regardless
2528 * of the SoC powersave state before suspending. Hence make sure the
2529 * device is asleep before proceeding.
2530 */
2531 ath10k_pci_sleep_sync(ar);
2532
2533 return 0;
2534 }
2535
2536 static int ath10k_pci_hif_resume(struct ath10k *ar)
2537 {
2538 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2539 struct pci_dev *pdev = ar_pci->pdev;
2540 u32 val;
2541 int ret = 0;
2542
2543 ret = ath10k_pci_force_wake(ar);
2544 if (ret) {
2545 ath10k_err(ar, "failed to wake up target: %d\n", ret);
2546 return ret;
2547 }
2548
2549 /* Suspend/Resume resets the PCI configuration space, so we have to
2550 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
2551 * from interfering with C3 CPU state. pci_restore_state won't help
2552 * here since it only restores the first 64 bytes pci config header.
2553 */
2554 pci_read_config_dword(pdev, 0x40, &val);
2555 if ((val & 0x0000ff00) != 0)
2556 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2557
2558 return ret;
2559 }
2560 #endif
2561
2562 static const struct ath10k_hif_ops ath10k_pci_hif_ops = {
2563 .tx_sg = ath10k_pci_hif_tx_sg,
2564 .diag_read = ath10k_pci_hif_diag_read,
2565 .diag_write = ath10k_pci_diag_write_mem,
2566 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
2567 .start = ath10k_pci_hif_start,
2568 .stop = ath10k_pci_hif_stop,
2569 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
2570 .get_default_pipe = ath10k_pci_hif_get_default_pipe,
2571 .send_complete_check = ath10k_pci_hif_send_complete_check,
2572 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
2573 .power_up = ath10k_pci_hif_power_up,
2574 .power_down = ath10k_pci_hif_power_down,
2575 .read32 = ath10k_pci_read32,
2576 .write32 = ath10k_pci_write32,
2577 #ifdef CONFIG_PM
2578 .suspend = ath10k_pci_hif_suspend,
2579 .resume = ath10k_pci_hif_resume,
2580 #endif
2581 };
2582
2583 /*
2584 * Top-level interrupt handler for all PCI interrupts from a Target.
2585 * When a block of MSI interrupts is allocated, this top-level handler
2586 * is not used; instead, we directly call the correct sub-handler.
2587 */
2588 static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg)
2589 {
2590 struct ath10k *ar = arg;
2591 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2592 int ret;
2593
2594 ret = ath10k_pci_force_wake(ar);
2595 if (ret) {
2596 ath10k_warn(ar, "failed to wake device up on irq: %d\n", ret);
2597 return IRQ_NONE;
2598 }
2599
2600 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY) {
2601 if (!ath10k_pci_irq_pending(ar))
2602 return IRQ_NONE;
2603
2604 ath10k_pci_disable_and_clear_legacy_irq(ar);
2605 }
2606
2607 tasklet_schedule(&ar_pci->intr_tq);
2608
2609 return IRQ_HANDLED;
2610 }
2611
2612 static void ath10k_pci_tasklet(unsigned long data)
2613 {
2614 struct ath10k *ar = (struct ath10k *)data;
2615 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2616
2617 if (ath10k_pci_has_fw_crashed(ar)) {
2618 ath10k_pci_irq_disable(ar);
2619 ath10k_pci_fw_crashed_clear(ar);
2620 ath10k_pci_fw_crashed_dump(ar);
2621 return;
2622 }
2623
2624 ath10k_ce_per_engine_service_any(ar);
2625
2626 /* Re-enable legacy irq that was disabled in the irq handler */
2627 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY)
2628 ath10k_pci_enable_legacy_irq(ar);
2629 }
2630
2631 static int ath10k_pci_request_irq_msi(struct ath10k *ar)
2632 {
2633 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2634 int ret;
2635
2636 ret = request_irq(ar_pci->pdev->irq,
2637 ath10k_pci_interrupt_handler,
2638 IRQF_SHARED, "ath10k_pci", ar);
2639 if (ret) {
2640 ath10k_warn(ar, "failed to request MSI irq %d: %d\n",
2641 ar_pci->pdev->irq, ret);
2642 return ret;
2643 }
2644
2645 return 0;
2646 }
2647
2648 static int ath10k_pci_request_irq_legacy(struct ath10k *ar)
2649 {
2650 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2651 int ret;
2652
2653 ret = request_irq(ar_pci->pdev->irq,
2654 ath10k_pci_interrupt_handler,
2655 IRQF_SHARED, "ath10k_pci", ar);
2656 if (ret) {
2657 ath10k_warn(ar, "failed to request legacy irq %d: %d\n",
2658 ar_pci->pdev->irq, ret);
2659 return ret;
2660 }
2661
2662 return 0;
2663 }
2664
2665 static int ath10k_pci_request_irq(struct ath10k *ar)
2666 {
2667 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2668
2669 switch (ar_pci->oper_irq_mode) {
2670 case ATH10K_PCI_IRQ_LEGACY:
2671 return ath10k_pci_request_irq_legacy(ar);
2672 case ATH10K_PCI_IRQ_MSI:
2673 return ath10k_pci_request_irq_msi(ar);
2674 default:
2675 return -EINVAL;
2676 }
2677 }
2678
2679 static void ath10k_pci_free_irq(struct ath10k *ar)
2680 {
2681 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2682
2683 free_irq(ar_pci->pdev->irq, ar);
2684 }
2685
2686 void ath10k_pci_init_irq_tasklets(struct ath10k *ar)
2687 {
2688 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2689
2690 tasklet_init(&ar_pci->intr_tq, ath10k_pci_tasklet, (unsigned long)ar);
2691 }
2692
2693 static int ath10k_pci_init_irq(struct ath10k *ar)
2694 {
2695 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2696 int ret;
2697
2698 ath10k_pci_init_irq_tasklets(ar);
2699
2700 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO)
2701 ath10k_info(ar, "limiting irq mode to: %d\n",
2702 ath10k_pci_irq_mode);
2703
2704 /* Try MSI */
2705 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) {
2706 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_MSI;
2707 ret = pci_enable_msi(ar_pci->pdev);
2708 if (ret == 0)
2709 return 0;
2710
2711 /* fall-through */
2712 }
2713
2714 /* Try legacy irq
2715 *
2716 * A potential race occurs here: The CORE_BASE write
2717 * depends on target correctly decoding AXI address but
2718 * host won't know when target writes BAR to CORE_CTRL.
2719 * This write might get lost if target has NOT written BAR.
2720 * For now, fix the race by repeating the write in below
2721 * synchronization checking. */
2722 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_LEGACY;
2723
2724 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2725 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
2726
2727 return 0;
2728 }
2729
2730 static void ath10k_pci_deinit_irq_legacy(struct ath10k *ar)
2731 {
2732 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2733 0);
2734 }
2735
2736 static int ath10k_pci_deinit_irq(struct ath10k *ar)
2737 {
2738 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2739
2740 switch (ar_pci->oper_irq_mode) {
2741 case ATH10K_PCI_IRQ_LEGACY:
2742 ath10k_pci_deinit_irq_legacy(ar);
2743 break;
2744 default:
2745 pci_disable_msi(ar_pci->pdev);
2746 break;
2747 }
2748
2749 return 0;
2750 }
2751
2752 int ath10k_pci_wait_for_target_init(struct ath10k *ar)
2753 {
2754 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2755 unsigned long timeout;
2756 u32 val;
2757
2758 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot waiting target to initialise\n");
2759
2760 timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT);
2761
2762 do {
2763 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2764
2765 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target indicator %x\n",
2766 val);
2767
2768 /* target should never return this */
2769 if (val == 0xffffffff)
2770 continue;
2771
2772 /* the device has crashed so don't bother trying anymore */
2773 if (val & FW_IND_EVENT_PENDING)
2774 break;
2775
2776 if (val & FW_IND_INITIALIZED)
2777 break;
2778
2779 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY)
2780 /* Fix potential race by repeating CORE_BASE writes */
2781 ath10k_pci_enable_legacy_irq(ar);
2782
2783 mdelay(10);
2784 } while (time_before(jiffies, timeout));
2785
2786 ath10k_pci_disable_and_clear_legacy_irq(ar);
2787 ath10k_pci_irq_msi_fw_mask(ar);
2788
2789 if (val == 0xffffffff) {
2790 ath10k_err(ar, "failed to read device register, device is gone\n");
2791 return -EIO;
2792 }
2793
2794 if (val & FW_IND_EVENT_PENDING) {
2795 ath10k_warn(ar, "device has crashed during init\n");
2796 return -ECOMM;
2797 }
2798
2799 if (!(val & FW_IND_INITIALIZED)) {
2800 ath10k_err(ar, "failed to receive initialized event from target: %08x\n",
2801 val);
2802 return -ETIMEDOUT;
2803 }
2804
2805 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target initialised\n");
2806 return 0;
2807 }
2808
2809 static int ath10k_pci_cold_reset(struct ath10k *ar)
2810 {
2811 u32 val;
2812
2813 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n");
2814
2815 spin_lock_bh(&ar->data_lock);
2816
2817 ar->stats.fw_cold_reset_counter++;
2818
2819 spin_unlock_bh(&ar->data_lock);
2820
2821 /* Put Target, including PCIe, into RESET. */
2822 val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
2823 val |= 1;
2824 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
2825
2826 /* After writing into SOC_GLOBAL_RESET to put device into
2827 * reset and pulling out of reset pcie may not be stable
2828 * for any immediate pcie register access and cause bus error,
2829 * add delay before any pcie access request to fix this issue.
2830 */
2831 msleep(20);
2832
2833 /* Pull Target, including PCIe, out of RESET. */
2834 val &= ~1;
2835 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
2836
2837 msleep(20);
2838
2839 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset complete\n");
2840
2841 return 0;
2842 }
2843
2844 static int ath10k_pci_claim(struct ath10k *ar)
2845 {
2846 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2847 struct pci_dev *pdev = ar_pci->pdev;
2848 int ret;
2849
2850 pci_set_drvdata(pdev, ar);
2851
2852 ret = pci_enable_device(pdev);
2853 if (ret) {
2854 ath10k_err(ar, "failed to enable pci device: %d\n", ret);
2855 return ret;
2856 }
2857
2858 ret = pci_request_region(pdev, BAR_NUM, "ath");
2859 if (ret) {
2860 ath10k_err(ar, "failed to request region BAR%d: %d\n", BAR_NUM,
2861 ret);
2862 goto err_device;
2863 }
2864
2865 /* Target expects 32 bit DMA. Enforce it. */
2866 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2867 if (ret) {
2868 ath10k_err(ar, "failed to set dma mask to 32-bit: %d\n", ret);
2869 goto err_region;
2870 }
2871
2872 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2873 if (ret) {
2874 ath10k_err(ar, "failed to set consistent dma mask to 32-bit: %d\n",
2875 ret);
2876 goto err_region;
2877 }
2878
2879 pci_set_master(pdev);
2880
2881 /* Arrange for access to Target SoC registers. */
2882 ar_pci->mem_len = pci_resource_len(pdev, BAR_NUM);
2883 ar_pci->mem = pci_iomap(pdev, BAR_NUM, 0);
2884 if (!ar_pci->mem) {
2885 ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM);
2886 ret = -EIO;
2887 goto err_master;
2888 }
2889
2890 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%p\n", ar_pci->mem);
2891 return 0;
2892
2893 err_master:
2894 pci_clear_master(pdev);
2895
2896 err_region:
2897 pci_release_region(pdev, BAR_NUM);
2898
2899 err_device:
2900 pci_disable_device(pdev);
2901
2902 return ret;
2903 }
2904
2905 static void ath10k_pci_release(struct ath10k *ar)
2906 {
2907 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2908 struct pci_dev *pdev = ar_pci->pdev;
2909
2910 pci_iounmap(pdev, ar_pci->mem);
2911 pci_release_region(pdev, BAR_NUM);
2912 pci_clear_master(pdev);
2913 pci_disable_device(pdev);
2914 }
2915
2916 static bool ath10k_pci_chip_is_supported(u32 dev_id, u32 chip_id)
2917 {
2918 const struct ath10k_pci_supp_chip *supp_chip;
2919 int i;
2920 u32 rev_id = MS(chip_id, SOC_CHIP_ID_REV);
2921
2922 for (i = 0; i < ARRAY_SIZE(ath10k_pci_supp_chips); i++) {
2923 supp_chip = &ath10k_pci_supp_chips[i];
2924
2925 if (supp_chip->dev_id == dev_id &&
2926 supp_chip->rev_id == rev_id)
2927 return true;
2928 }
2929
2930 return false;
2931 }
2932
2933 int ath10k_pci_setup_resource(struct ath10k *ar)
2934 {
2935 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2936 int ret;
2937
2938 spin_lock_init(&ar_pci->ce_lock);
2939 spin_lock_init(&ar_pci->ps_lock);
2940
2941 setup_timer(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry,
2942 (unsigned long)ar);
2943
2944 if (QCA_REV_6174(ar))
2945 ath10k_pci_override_ce_config(ar);
2946
2947 ret = ath10k_pci_alloc_pipes(ar);
2948 if (ret) {
2949 ath10k_err(ar, "failed to allocate copy engine pipes: %d\n",
2950 ret);
2951 return ret;
2952 }
2953
2954 return 0;
2955 }
2956
2957 void ath10k_pci_release_resource(struct ath10k *ar)
2958 {
2959 ath10k_pci_kill_tasklet(ar);
2960 ath10k_pci_ce_deinit(ar);
2961 ath10k_pci_free_pipes(ar);
2962 }
2963
2964 static const struct ath10k_bus_ops ath10k_pci_bus_ops = {
2965 .read32 = ath10k_bus_pci_read32,
2966 .write32 = ath10k_bus_pci_write32,
2967 .get_num_banks = ath10k_pci_get_num_banks,
2968 };
2969
2970 static int ath10k_pci_probe(struct pci_dev *pdev,
2971 const struct pci_device_id *pci_dev)
2972 {
2973 int ret = 0;
2974 struct ath10k *ar;
2975 struct ath10k_pci *ar_pci;
2976 enum ath10k_hw_rev hw_rev;
2977 u32 chip_id;
2978 bool pci_ps;
2979
2980 switch (pci_dev->device) {
2981 case QCA988X_2_0_DEVICE_ID:
2982 hw_rev = ATH10K_HW_QCA988X;
2983 pci_ps = false;
2984 break;
2985 case QCA6164_2_1_DEVICE_ID:
2986 case QCA6174_2_1_DEVICE_ID:
2987 hw_rev = ATH10K_HW_QCA6174;
2988 pci_ps = true;
2989 break;
2990 case QCA99X0_2_0_DEVICE_ID:
2991 hw_rev = ATH10K_HW_QCA99X0;
2992 pci_ps = false;
2993 break;
2994 case QCA9377_1_0_DEVICE_ID:
2995 hw_rev = ATH10K_HW_QCA9377;
2996 pci_ps = true;
2997 break;
2998 default:
2999 WARN_ON(1);
3000 return -ENOTSUPP;
3001 }
3002
3003 ar = ath10k_core_create(sizeof(*ar_pci), &pdev->dev, ATH10K_BUS_PCI,
3004 hw_rev, &ath10k_pci_hif_ops);
3005 if (!ar) {
3006 dev_err(&pdev->dev, "failed to allocate core\n");
3007 return -ENOMEM;
3008 }
3009
3010 ath10k_dbg(ar, ATH10K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n",
3011 pdev->vendor, pdev->device,
3012 pdev->subsystem_vendor, pdev->subsystem_device);
3013
3014 ar_pci = ath10k_pci_priv(ar);
3015 ar_pci->pdev = pdev;
3016 ar_pci->dev = &pdev->dev;
3017 ar_pci->ar = ar;
3018 ar->dev_id = pci_dev->device;
3019 ar_pci->pci_ps = pci_ps;
3020 ar_pci->bus_ops = &ath10k_pci_bus_ops;
3021
3022 ar->id.vendor = pdev->vendor;
3023 ar->id.device = pdev->device;
3024 ar->id.subsystem_vendor = pdev->subsystem_vendor;
3025 ar->id.subsystem_device = pdev->subsystem_device;
3026
3027 setup_timer(&ar_pci->ps_timer, ath10k_pci_ps_timer,
3028 (unsigned long)ar);
3029
3030 ret = ath10k_pci_setup_resource(ar);
3031 if (ret) {
3032 ath10k_err(ar, "failed to setup resource: %d\n", ret);
3033 goto err_core_destroy;
3034 }
3035
3036 ret = ath10k_pci_claim(ar);
3037 if (ret) {
3038 ath10k_err(ar, "failed to claim device: %d\n", ret);
3039 goto err_free_pipes;
3040 }
3041
3042 ret = ath10k_pci_force_wake(ar);
3043 if (ret) {
3044 ath10k_warn(ar, "failed to wake up device : %d\n", ret);
3045 goto err_sleep;
3046 }
3047
3048 ath10k_pci_ce_deinit(ar);
3049 ath10k_pci_irq_disable(ar);
3050
3051 ret = ath10k_pci_init_irq(ar);
3052 if (ret) {
3053 ath10k_err(ar, "failed to init irqs: %d\n", ret);
3054 goto err_sleep;
3055 }
3056
3057 ath10k_info(ar, "pci irq %s oper_irq_mode %d irq_mode %d reset_mode %d\n",
3058 ath10k_pci_get_irq_method(ar), ar_pci->oper_irq_mode,
3059 ath10k_pci_irq_mode, ath10k_pci_reset_mode);
3060
3061 ret = ath10k_pci_request_irq(ar);
3062 if (ret) {
3063 ath10k_warn(ar, "failed to request irqs: %d\n", ret);
3064 goto err_deinit_irq;
3065 }
3066
3067 ret = ath10k_pci_chip_reset(ar);
3068 if (ret) {
3069 ath10k_err(ar, "failed to reset chip: %d\n", ret);
3070 goto err_free_irq;
3071 }
3072
3073 chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
3074 if (chip_id == 0xffffffff) {
3075 ath10k_err(ar, "failed to get chip id\n");
3076 goto err_free_irq;
3077 }
3078
3079 if (!ath10k_pci_chip_is_supported(pdev->device, chip_id)) {
3080 ath10k_err(ar, "device %04x with chip_id %08x isn't supported\n",
3081 pdev->device, chip_id);
3082 goto err_free_irq;
3083 }
3084
3085 ret = ath10k_core_register(ar, chip_id);
3086 if (ret) {
3087 ath10k_err(ar, "failed to register driver core: %d\n", ret);
3088 goto err_free_irq;
3089 }
3090
3091 return 0;
3092
3093 err_free_irq:
3094 ath10k_pci_free_irq(ar);
3095 ath10k_pci_kill_tasklet(ar);
3096
3097 err_deinit_irq:
3098 ath10k_pci_deinit_irq(ar);
3099
3100 err_sleep:
3101 ath10k_pci_sleep_sync(ar);
3102 ath10k_pci_release(ar);
3103
3104 err_free_pipes:
3105 ath10k_pci_free_pipes(ar);
3106
3107 err_core_destroy:
3108 ath10k_core_destroy(ar);
3109
3110 return ret;
3111 }
3112
3113 static void ath10k_pci_remove(struct pci_dev *pdev)
3114 {
3115 struct ath10k *ar = pci_get_drvdata(pdev);
3116 struct ath10k_pci *ar_pci;
3117
3118 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci remove\n");
3119
3120 if (!ar)
3121 return;
3122
3123 ar_pci = ath10k_pci_priv(ar);
3124
3125 if (!ar_pci)
3126 return;
3127
3128 ath10k_core_unregister(ar);
3129 ath10k_pci_free_irq(ar);
3130 ath10k_pci_deinit_irq(ar);
3131 ath10k_pci_release_resource(ar);
3132 ath10k_pci_sleep_sync(ar);
3133 ath10k_pci_release(ar);
3134 ath10k_core_destroy(ar);
3135 }
3136
3137 MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table);
3138
3139 static struct pci_driver ath10k_pci_driver = {
3140 .name = "ath10k_pci",
3141 .id_table = ath10k_pci_id_table,
3142 .probe = ath10k_pci_probe,
3143 .remove = ath10k_pci_remove,
3144 };
3145
3146 static int __init ath10k_pci_init(void)
3147 {
3148 int ret;
3149
3150 ret = pci_register_driver(&ath10k_pci_driver);
3151 if (ret)
3152 printk(KERN_ERR "failed to register ath10k pci driver: %d\n",
3153 ret);
3154
3155 ret = ath10k_ahb_init();
3156 if (ret)
3157 printk(KERN_ERR "ahb init failed: %d\n", ret);
3158
3159 return ret;
3160 }
3161 module_init(ath10k_pci_init);
3162
3163 static void __exit ath10k_pci_exit(void)
3164 {
3165 pci_unregister_driver(&ath10k_pci_driver);
3166 ath10k_ahb_exit();
3167 }
3168
3169 module_exit(ath10k_pci_exit);
3170
3171 MODULE_AUTHOR("Qualcomm Atheros");
3172 MODULE_DESCRIPTION("Driver support for Atheros QCA988X PCIe devices");
3173 MODULE_LICENSE("Dual BSD/GPL");
3174
3175 /* QCA988x 2.0 firmware files */
3176 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API2_FILE);
3177 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API3_FILE);
3178 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API4_FILE);
3179 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3180 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_BOARD_DATA_FILE);
3181 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3182
3183 /* QCA6174 2.1 firmware files */
3184 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API4_FILE);
3185 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API5_FILE);
3186 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" QCA6174_HW_2_1_BOARD_DATA_FILE);
3187 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3188
3189 /* QCA6174 3.1 firmware files */
3190 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API4_FILE);
3191 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3192 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" QCA6174_HW_3_0_BOARD_DATA_FILE);
3193 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3194
3195 /* QCA9377 1.0 firmware files */
3196 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3197 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" QCA9377_HW_1_0_BOARD_DATA_FILE);
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