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5e3dd157 KV |
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> | |
650b91fb | 22 | #include <linux/bitops.h> |
5e3dd157 KV |
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 | ||
cfe9c45b MK |
36 | enum ath10k_pci_irq_mode { |
37 | ATH10K_PCI_IRQ_AUTO = 0, | |
38 | ATH10K_PCI_IRQ_LEGACY = 1, | |
39 | ATH10K_PCI_IRQ_MSI = 2, | |
40 | }; | |
41 | ||
35098463 KV |
42 | enum ath10k_pci_reset_mode { |
43 | ATH10K_PCI_RESET_AUTO = 0, | |
44 | ATH10K_PCI_RESET_WARM_ONLY = 1, | |
45 | }; | |
46 | ||
e42c1fbd | 47 | static unsigned int ath10k_pci_target_ps; |
cfe9c45b | 48 | static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO; |
35098463 | 49 | static unsigned int ath10k_pci_reset_mode = ATH10K_PCI_RESET_AUTO; |
cfe9c45b | 50 | |
e42c1fbd KV |
51 | module_param_named(target_ps, ath10k_pci_target_ps, uint, 0644); |
52 | MODULE_PARM_DESC(target_ps, "Enable ath10k Target (SoC) PS option"); | |
5e3dd157 | 53 | |
cfe9c45b MK |
54 | module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644); |
55 | MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)"); | |
56 | ||
35098463 KV |
57 | module_param_named(reset_mode, ath10k_pci_reset_mode, uint, 0644); |
58 | MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)"); | |
59 | ||
0399eca8 KV |
60 | /* how long wait to wait for target to initialise, in ms */ |
61 | #define ATH10K_PCI_TARGET_WAIT 3000 | |
62 | ||
5e3dd157 KV |
63 | #define QCA988X_2_0_DEVICE_ID (0x003c) |
64 | ||
65 | static DEFINE_PCI_DEVICE_TABLE(ath10k_pci_id_table) = { | |
5e3dd157 KV |
66 | { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */ |
67 | {0} | |
68 | }; | |
69 | ||
70 | static int ath10k_pci_diag_read_access(struct ath10k *ar, u32 address, | |
71 | u32 *data); | |
72 | ||
5e3dd157 | 73 | static int ath10k_pci_post_rx(struct ath10k *ar); |
87263e5b | 74 | static int ath10k_pci_post_rx_pipe(struct ath10k_pci_pipe *pipe_info, |
5e3dd157 | 75 | int num); |
87263e5b | 76 | static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pipe_info); |
fc36e3ff MK |
77 | static int ath10k_pci_cold_reset(struct ath10k *ar); |
78 | static int ath10k_pci_warm_reset(struct ath10k *ar); | |
d7fb47f5 | 79 | static int ath10k_pci_wait_for_target_init(struct ath10k *ar); |
fc15ca13 MK |
80 | static int ath10k_pci_init_irq(struct ath10k *ar); |
81 | static int ath10k_pci_deinit_irq(struct ath10k *ar); | |
82 | static int ath10k_pci_request_irq(struct ath10k *ar); | |
83 | static void ath10k_pci_free_irq(struct ath10k *ar); | |
85622cde MK |
84 | static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe, |
85 | struct ath10k_ce_pipe *rx_pipe, | |
86 | struct bmi_xfer *xfer); | |
5e3dd157 KV |
87 | |
88 | static const struct ce_attr host_ce_config_wlan[] = { | |
48e9c225 KV |
89 | /* CE0: host->target HTC control and raw streams */ |
90 | { | |
91 | .flags = CE_ATTR_FLAGS, | |
92 | .src_nentries = 16, | |
93 | .src_sz_max = 256, | |
94 | .dest_nentries = 0, | |
95 | }, | |
96 | ||
97 | /* CE1: target->host HTT + HTC control */ | |
98 | { | |
99 | .flags = CE_ATTR_FLAGS, | |
100 | .src_nentries = 0, | |
101 | .src_sz_max = 512, | |
102 | .dest_nentries = 512, | |
103 | }, | |
104 | ||
105 | /* CE2: target->host WMI */ | |
106 | { | |
107 | .flags = CE_ATTR_FLAGS, | |
108 | .src_nentries = 0, | |
109 | .src_sz_max = 2048, | |
110 | .dest_nentries = 32, | |
111 | }, | |
112 | ||
113 | /* CE3: host->target WMI */ | |
114 | { | |
115 | .flags = CE_ATTR_FLAGS, | |
116 | .src_nentries = 32, | |
117 | .src_sz_max = 2048, | |
118 | .dest_nentries = 0, | |
119 | }, | |
120 | ||
121 | /* CE4: host->target HTT */ | |
122 | { | |
123 | .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR, | |
124 | .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES, | |
125 | .src_sz_max = 256, | |
126 | .dest_nentries = 0, | |
127 | }, | |
128 | ||
129 | /* CE5: unused */ | |
130 | { | |
131 | .flags = CE_ATTR_FLAGS, | |
132 | .src_nentries = 0, | |
133 | .src_sz_max = 0, | |
134 | .dest_nentries = 0, | |
135 | }, | |
136 | ||
137 | /* CE6: target autonomous hif_memcpy */ | |
138 | { | |
139 | .flags = CE_ATTR_FLAGS, | |
140 | .src_nentries = 0, | |
141 | .src_sz_max = 0, | |
142 | .dest_nentries = 0, | |
143 | }, | |
144 | ||
145 | /* CE7: ce_diag, the Diagnostic Window */ | |
146 | { | |
147 | .flags = CE_ATTR_FLAGS, | |
148 | .src_nentries = 2, | |
149 | .src_sz_max = DIAG_TRANSFER_LIMIT, | |
150 | .dest_nentries = 2, | |
151 | }, | |
5e3dd157 KV |
152 | }; |
153 | ||
154 | /* Target firmware's Copy Engine configuration. */ | |
155 | static const struct ce_pipe_config target_ce_config_wlan[] = { | |
d88effba KV |
156 | /* CE0: host->target HTC control and raw streams */ |
157 | { | |
158 | .pipenum = 0, | |
159 | .pipedir = PIPEDIR_OUT, | |
160 | .nentries = 32, | |
161 | .nbytes_max = 256, | |
162 | .flags = CE_ATTR_FLAGS, | |
163 | .reserved = 0, | |
164 | }, | |
165 | ||
166 | /* CE1: target->host HTT + HTC control */ | |
167 | { | |
168 | .pipenum = 1, | |
169 | .pipedir = PIPEDIR_IN, | |
170 | .nentries = 32, | |
171 | .nbytes_max = 512, | |
172 | .flags = CE_ATTR_FLAGS, | |
173 | .reserved = 0, | |
174 | }, | |
175 | ||
176 | /* CE2: target->host WMI */ | |
177 | { | |
178 | .pipenum = 2, | |
179 | .pipedir = PIPEDIR_IN, | |
180 | .nentries = 32, | |
181 | .nbytes_max = 2048, | |
182 | .flags = CE_ATTR_FLAGS, | |
183 | .reserved = 0, | |
184 | }, | |
185 | ||
186 | /* CE3: host->target WMI */ | |
187 | { | |
188 | .pipenum = 3, | |
189 | .pipedir = PIPEDIR_OUT, | |
190 | .nentries = 32, | |
191 | .nbytes_max = 2048, | |
192 | .flags = CE_ATTR_FLAGS, | |
193 | .reserved = 0, | |
194 | }, | |
195 | ||
196 | /* CE4: host->target HTT */ | |
197 | { | |
198 | .pipenum = 4, | |
199 | .pipedir = PIPEDIR_OUT, | |
200 | .nentries = 256, | |
201 | .nbytes_max = 256, | |
202 | .flags = CE_ATTR_FLAGS, | |
203 | .reserved = 0, | |
204 | }, | |
205 | ||
5e3dd157 | 206 | /* NB: 50% of src nentries, since tx has 2 frags */ |
d88effba KV |
207 | |
208 | /* CE5: unused */ | |
209 | { | |
210 | .pipenum = 5, | |
211 | .pipedir = PIPEDIR_OUT, | |
212 | .nentries = 32, | |
213 | .nbytes_max = 2048, | |
214 | .flags = CE_ATTR_FLAGS, | |
215 | .reserved = 0, | |
216 | }, | |
217 | ||
218 | /* CE6: Reserved for target autonomous hif_memcpy */ | |
219 | { | |
220 | .pipenum = 6, | |
221 | .pipedir = PIPEDIR_INOUT, | |
222 | .nentries = 32, | |
223 | .nbytes_max = 4096, | |
224 | .flags = CE_ATTR_FLAGS, | |
225 | .reserved = 0, | |
226 | }, | |
227 | ||
5e3dd157 KV |
228 | /* CE7 used only by Host */ |
229 | }; | |
230 | ||
e539887b MK |
231 | static bool ath10k_pci_irq_pending(struct ath10k *ar) |
232 | { | |
233 | u32 cause; | |
234 | ||
235 | /* Check if the shared legacy irq is for us */ | |
236 | cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + | |
237 | PCIE_INTR_CAUSE_ADDRESS); | |
238 | if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL)) | |
239 | return true; | |
240 | ||
241 | return false; | |
242 | } | |
243 | ||
2685218b MK |
244 | static void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar) |
245 | { | |
246 | /* IMPORTANT: INTR_CLR register has to be set after | |
247 | * INTR_ENABLE is set to 0, otherwise interrupt can not be | |
248 | * really cleared. */ | |
249 | ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS, | |
250 | 0); | |
251 | ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS, | |
252 | PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); | |
253 | ||
254 | /* IMPORTANT: this extra read transaction is required to | |
255 | * flush the posted write buffer. */ | |
256 | (void) ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + | |
257 | PCIE_INTR_ENABLE_ADDRESS); | |
258 | } | |
259 | ||
260 | static void ath10k_pci_enable_legacy_irq(struct ath10k *ar) | |
261 | { | |
262 | ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + | |
263 | PCIE_INTR_ENABLE_ADDRESS, | |
264 | PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); | |
265 | ||
266 | /* IMPORTANT: this extra read transaction is required to | |
267 | * flush the posted write buffer. */ | |
268 | (void) ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + | |
269 | PCIE_INTR_ENABLE_ADDRESS); | |
270 | } | |
271 | ||
ab977bd0 MK |
272 | static irqreturn_t ath10k_pci_early_irq_handler(int irq, void *arg) |
273 | { | |
274 | struct ath10k *ar = arg; | |
275 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
276 | ||
277 | if (ar_pci->num_msi_intrs == 0) { | |
278 | if (!ath10k_pci_irq_pending(ar)) | |
279 | return IRQ_NONE; | |
280 | ||
281 | ath10k_pci_disable_and_clear_legacy_irq(ar); | |
282 | } | |
283 | ||
284 | tasklet_schedule(&ar_pci->early_irq_tasklet); | |
285 | ||
286 | return IRQ_HANDLED; | |
287 | } | |
288 | ||
289 | static int ath10k_pci_request_early_irq(struct ath10k *ar) | |
290 | { | |
291 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
292 | int ret; | |
293 | ||
294 | /* Regardless whether MSI-X/MSI/legacy irqs have been set up the first | |
295 | * interrupt from irq vector is triggered in all cases for FW | |
296 | * indication/errors */ | |
297 | ret = request_irq(ar_pci->pdev->irq, ath10k_pci_early_irq_handler, | |
298 | IRQF_SHARED, "ath10k_pci (early)", ar); | |
299 | if (ret) { | |
300 | ath10k_warn("failed to request early irq: %d\n", ret); | |
301 | return ret; | |
302 | } | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
307 | static void ath10k_pci_free_early_irq(struct ath10k *ar) | |
308 | { | |
309 | free_irq(ath10k_pci_priv(ar)->pdev->irq, ar); | |
310 | } | |
311 | ||
5e3dd157 KV |
312 | /* |
313 | * Diagnostic read/write access is provided for startup/config/debug usage. | |
314 | * Caller must guarantee proper alignment, when applicable, and single user | |
315 | * at any moment. | |
316 | */ | |
317 | static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, | |
318 | int nbytes) | |
319 | { | |
320 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
321 | int ret = 0; | |
322 | u32 buf; | |
323 | unsigned int completed_nbytes, orig_nbytes, remaining_bytes; | |
324 | unsigned int id; | |
325 | unsigned int flags; | |
2aa39115 | 326 | struct ath10k_ce_pipe *ce_diag; |
5e3dd157 KV |
327 | /* Host buffer address in CE space */ |
328 | u32 ce_data; | |
329 | dma_addr_t ce_data_base = 0; | |
330 | void *data_buf = NULL; | |
331 | int i; | |
332 | ||
333 | /* | |
334 | * This code cannot handle reads to non-memory space. Redirect to the | |
335 | * register read fn but preserve the multi word read capability of | |
336 | * this fn | |
337 | */ | |
338 | if (address < DRAM_BASE_ADDRESS) { | |
339 | if (!IS_ALIGNED(address, 4) || | |
340 | !IS_ALIGNED((unsigned long)data, 4)) | |
341 | return -EIO; | |
342 | ||
343 | while ((nbytes >= 4) && ((ret = ath10k_pci_diag_read_access( | |
344 | ar, address, (u32 *)data)) == 0)) { | |
345 | nbytes -= sizeof(u32); | |
346 | address += sizeof(u32); | |
347 | data += sizeof(u32); | |
348 | } | |
349 | return ret; | |
350 | } | |
351 | ||
352 | ce_diag = ar_pci->ce_diag; | |
353 | ||
354 | /* | |
355 | * Allocate a temporary bounce buffer to hold caller's data | |
356 | * to be DMA'ed from Target. This guarantees | |
357 | * 1) 4-byte alignment | |
358 | * 2) Buffer in DMA-able space | |
359 | */ | |
360 | orig_nbytes = nbytes; | |
361 | data_buf = (unsigned char *)pci_alloc_consistent(ar_pci->pdev, | |
362 | orig_nbytes, | |
363 | &ce_data_base); | |
364 | ||
365 | if (!data_buf) { | |
366 | ret = -ENOMEM; | |
367 | goto done; | |
368 | } | |
369 | memset(data_buf, 0, orig_nbytes); | |
370 | ||
371 | remaining_bytes = orig_nbytes; | |
372 | ce_data = ce_data_base; | |
373 | while (remaining_bytes) { | |
374 | nbytes = min_t(unsigned int, remaining_bytes, | |
375 | DIAG_TRANSFER_LIMIT); | |
376 | ||
377 | ret = ath10k_ce_recv_buf_enqueue(ce_diag, NULL, ce_data); | |
378 | if (ret != 0) | |
379 | goto done; | |
380 | ||
381 | /* Request CE to send from Target(!) address to Host buffer */ | |
382 | /* | |
383 | * The address supplied by the caller is in the | |
384 | * Target CPU virtual address space. | |
385 | * | |
386 | * In order to use this address with the diagnostic CE, | |
387 | * convert it from Target CPU virtual address space | |
388 | * to CE address space | |
389 | */ | |
390 | ath10k_pci_wake(ar); | |
391 | address = TARG_CPU_SPACE_TO_CE_SPACE(ar, ar_pci->mem, | |
392 | address); | |
393 | ath10k_pci_sleep(ar); | |
394 | ||
395 | ret = ath10k_ce_send(ce_diag, NULL, (u32)address, nbytes, 0, | |
396 | 0); | |
397 | if (ret) | |
398 | goto done; | |
399 | ||
400 | i = 0; | |
401 | while (ath10k_ce_completed_send_next(ce_diag, NULL, &buf, | |
402 | &completed_nbytes, | |
403 | &id) != 0) { | |
404 | mdelay(1); | |
405 | if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) { | |
406 | ret = -EBUSY; | |
407 | goto done; | |
408 | } | |
409 | } | |
410 | ||
411 | if (nbytes != completed_nbytes) { | |
412 | ret = -EIO; | |
413 | goto done; | |
414 | } | |
415 | ||
416 | if (buf != (u32) address) { | |
417 | ret = -EIO; | |
418 | goto done; | |
419 | } | |
420 | ||
421 | i = 0; | |
422 | while (ath10k_ce_completed_recv_next(ce_diag, NULL, &buf, | |
423 | &completed_nbytes, | |
424 | &id, &flags) != 0) { | |
425 | mdelay(1); | |
426 | ||
427 | if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) { | |
428 | ret = -EBUSY; | |
429 | goto done; | |
430 | } | |
431 | } | |
432 | ||
433 | if (nbytes != completed_nbytes) { | |
434 | ret = -EIO; | |
435 | goto done; | |
436 | } | |
437 | ||
438 | if (buf != ce_data) { | |
439 | ret = -EIO; | |
440 | goto done; | |
441 | } | |
442 | ||
443 | remaining_bytes -= nbytes; | |
444 | address += nbytes; | |
445 | ce_data += nbytes; | |
446 | } | |
447 | ||
448 | done: | |
449 | if (ret == 0) { | |
450 | /* Copy data from allocated DMA buf to caller's buf */ | |
451 | WARN_ON_ONCE(orig_nbytes & 3); | |
452 | for (i = 0; i < orig_nbytes / sizeof(__le32); i++) { | |
453 | ((u32 *)data)[i] = | |
454 | __le32_to_cpu(((__le32 *)data_buf)[i]); | |
455 | } | |
456 | } else | |
50f87a67 KV |
457 | ath10k_warn("failed to read diag value at 0x%x: %d\n", |
458 | address, ret); | |
5e3dd157 KV |
459 | |
460 | if (data_buf) | |
461 | pci_free_consistent(ar_pci->pdev, orig_nbytes, | |
462 | data_buf, ce_data_base); | |
463 | ||
464 | return ret; | |
465 | } | |
466 | ||
467 | /* Read 4-byte aligned data from Target memory or register */ | |
468 | static int ath10k_pci_diag_read_access(struct ath10k *ar, u32 address, | |
469 | u32 *data) | |
470 | { | |
471 | /* Assume range doesn't cross this boundary */ | |
472 | if (address >= DRAM_BASE_ADDRESS) | |
473 | return ath10k_pci_diag_read_mem(ar, address, data, sizeof(u32)); | |
474 | ||
475 | ath10k_pci_wake(ar); | |
476 | *data = ath10k_pci_read32(ar, address); | |
477 | ath10k_pci_sleep(ar); | |
478 | return 0; | |
479 | } | |
480 | ||
481 | static int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address, | |
482 | const void *data, int nbytes) | |
483 | { | |
484 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
485 | int ret = 0; | |
486 | u32 buf; | |
487 | unsigned int completed_nbytes, orig_nbytes, remaining_bytes; | |
488 | unsigned int id; | |
489 | unsigned int flags; | |
2aa39115 | 490 | struct ath10k_ce_pipe *ce_diag; |
5e3dd157 KV |
491 | void *data_buf = NULL; |
492 | u32 ce_data; /* Host buffer address in CE space */ | |
493 | dma_addr_t ce_data_base = 0; | |
494 | int i; | |
495 | ||
496 | ce_diag = ar_pci->ce_diag; | |
497 | ||
498 | /* | |
499 | * Allocate a temporary bounce buffer to hold caller's data | |
500 | * to be DMA'ed to Target. This guarantees | |
501 | * 1) 4-byte alignment | |
502 | * 2) Buffer in DMA-able space | |
503 | */ | |
504 | orig_nbytes = nbytes; | |
505 | data_buf = (unsigned char *)pci_alloc_consistent(ar_pci->pdev, | |
506 | orig_nbytes, | |
507 | &ce_data_base); | |
508 | if (!data_buf) { | |
509 | ret = -ENOMEM; | |
510 | goto done; | |
511 | } | |
512 | ||
513 | /* Copy caller's data to allocated DMA buf */ | |
514 | WARN_ON_ONCE(orig_nbytes & 3); | |
515 | for (i = 0; i < orig_nbytes / sizeof(__le32); i++) | |
516 | ((__le32 *)data_buf)[i] = __cpu_to_le32(((u32 *)data)[i]); | |
517 | ||
518 | /* | |
519 | * The address supplied by the caller is in the | |
520 | * Target CPU virtual address space. | |
521 | * | |
522 | * In order to use this address with the diagnostic CE, | |
523 | * convert it from | |
524 | * Target CPU virtual address space | |
525 | * to | |
526 | * CE address space | |
527 | */ | |
528 | ath10k_pci_wake(ar); | |
529 | address = TARG_CPU_SPACE_TO_CE_SPACE(ar, ar_pci->mem, address); | |
530 | ath10k_pci_sleep(ar); | |
531 | ||
532 | remaining_bytes = orig_nbytes; | |
533 | ce_data = ce_data_base; | |
534 | while (remaining_bytes) { | |
535 | /* FIXME: check cast */ | |
536 | nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT); | |
537 | ||
538 | /* Set up to receive directly into Target(!) address */ | |
539 | ret = ath10k_ce_recv_buf_enqueue(ce_diag, NULL, address); | |
540 | if (ret != 0) | |
541 | goto done; | |
542 | ||
543 | /* | |
544 | * Request CE to send caller-supplied data that | |
545 | * was copied to bounce buffer to Target(!) address. | |
546 | */ | |
547 | ret = ath10k_ce_send(ce_diag, NULL, (u32) ce_data, | |
548 | nbytes, 0, 0); | |
549 | if (ret != 0) | |
550 | goto done; | |
551 | ||
552 | i = 0; | |
553 | while (ath10k_ce_completed_send_next(ce_diag, NULL, &buf, | |
554 | &completed_nbytes, | |
555 | &id) != 0) { | |
556 | mdelay(1); | |
557 | ||
558 | if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) { | |
559 | ret = -EBUSY; | |
560 | goto done; | |
561 | } | |
562 | } | |
563 | ||
564 | if (nbytes != completed_nbytes) { | |
565 | ret = -EIO; | |
566 | goto done; | |
567 | } | |
568 | ||
569 | if (buf != ce_data) { | |
570 | ret = -EIO; | |
571 | goto done; | |
572 | } | |
573 | ||
574 | i = 0; | |
575 | while (ath10k_ce_completed_recv_next(ce_diag, NULL, &buf, | |
576 | &completed_nbytes, | |
577 | &id, &flags) != 0) { | |
578 | mdelay(1); | |
579 | ||
580 | if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) { | |
581 | ret = -EBUSY; | |
582 | goto done; | |
583 | } | |
584 | } | |
585 | ||
586 | if (nbytes != completed_nbytes) { | |
587 | ret = -EIO; | |
588 | goto done; | |
589 | } | |
590 | ||
591 | if (buf != address) { | |
592 | ret = -EIO; | |
593 | goto done; | |
594 | } | |
595 | ||
596 | remaining_bytes -= nbytes; | |
597 | address += nbytes; | |
598 | ce_data += nbytes; | |
599 | } | |
600 | ||
601 | done: | |
602 | if (data_buf) { | |
603 | pci_free_consistent(ar_pci->pdev, orig_nbytes, data_buf, | |
604 | ce_data_base); | |
605 | } | |
606 | ||
607 | if (ret != 0) | |
50f87a67 KV |
608 | ath10k_warn("failed to write diag value at 0x%x: %d\n", |
609 | address, ret); | |
5e3dd157 KV |
610 | |
611 | return ret; | |
612 | } | |
613 | ||
614 | /* Write 4B data to Target memory or register */ | |
615 | static int ath10k_pci_diag_write_access(struct ath10k *ar, u32 address, | |
616 | u32 data) | |
617 | { | |
618 | /* Assume range doesn't cross this boundary */ | |
619 | if (address >= DRAM_BASE_ADDRESS) | |
620 | return ath10k_pci_diag_write_mem(ar, address, &data, | |
621 | sizeof(u32)); | |
622 | ||
623 | ath10k_pci_wake(ar); | |
624 | ath10k_pci_write32(ar, address, data); | |
625 | ath10k_pci_sleep(ar); | |
626 | return 0; | |
627 | } | |
628 | ||
629 | static bool ath10k_pci_target_is_awake(struct ath10k *ar) | |
630 | { | |
631 | void __iomem *mem = ath10k_pci_priv(ar)->mem; | |
632 | u32 val; | |
633 | val = ioread32(mem + PCIE_LOCAL_BASE_ADDRESS + | |
634 | RTC_STATE_ADDRESS); | |
635 | return (RTC_STATE_V_GET(val) == RTC_STATE_V_ON); | |
636 | } | |
637 | ||
3aebe54b | 638 | int ath10k_do_pci_wake(struct ath10k *ar) |
5e3dd157 KV |
639 | { |
640 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
641 | void __iomem *pci_addr = ar_pci->mem; | |
642 | int tot_delay = 0; | |
643 | int curr_delay = 5; | |
644 | ||
645 | if (atomic_read(&ar_pci->keep_awake_count) == 0) { | |
646 | /* Force AWAKE */ | |
647 | iowrite32(PCIE_SOC_WAKE_V_MASK, | |
648 | pci_addr + PCIE_LOCAL_BASE_ADDRESS + | |
649 | PCIE_SOC_WAKE_ADDRESS); | |
650 | } | |
651 | atomic_inc(&ar_pci->keep_awake_count); | |
652 | ||
653 | if (ar_pci->verified_awake) | |
3aebe54b | 654 | return 0; |
5e3dd157 KV |
655 | |
656 | for (;;) { | |
657 | if (ath10k_pci_target_is_awake(ar)) { | |
658 | ar_pci->verified_awake = true; | |
3aebe54b | 659 | return 0; |
5e3dd157 KV |
660 | } |
661 | ||
662 | if (tot_delay > PCIE_WAKE_TIMEOUT) { | |
3aebe54b KV |
663 | ath10k_warn("target took longer %d us to wake up (awake count %d)\n", |
664 | PCIE_WAKE_TIMEOUT, | |
5e3dd157 | 665 | atomic_read(&ar_pci->keep_awake_count)); |
3aebe54b | 666 | return -ETIMEDOUT; |
5e3dd157 KV |
667 | } |
668 | ||
669 | udelay(curr_delay); | |
670 | tot_delay += curr_delay; | |
671 | ||
672 | if (curr_delay < 50) | |
673 | curr_delay += 5; | |
674 | } | |
675 | } | |
676 | ||
677 | void ath10k_do_pci_sleep(struct ath10k *ar) | |
678 | { | |
679 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
680 | void __iomem *pci_addr = ar_pci->mem; | |
681 | ||
682 | if (atomic_dec_and_test(&ar_pci->keep_awake_count)) { | |
683 | /* Allow sleep */ | |
684 | ar_pci->verified_awake = false; | |
685 | iowrite32(PCIE_SOC_WAKE_RESET, | |
686 | pci_addr + PCIE_LOCAL_BASE_ADDRESS + | |
687 | PCIE_SOC_WAKE_ADDRESS); | |
688 | } | |
689 | } | |
690 | ||
5e3dd157 | 691 | /* Called by lower (CE) layer when a send to Target completes. */ |
5440ce25 | 692 | static void ath10k_pci_ce_send_done(struct ath10k_ce_pipe *ce_state) |
5e3dd157 KV |
693 | { |
694 | struct ath10k *ar = ce_state->ar; | |
695 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2f5280da | 696 | struct ath10k_hif_cb *cb = &ar_pci->msg_callbacks_current; |
5440ce25 MK |
697 | void *transfer_context; |
698 | u32 ce_data; | |
699 | unsigned int nbytes; | |
700 | unsigned int transfer_id; | |
5e3dd157 | 701 | |
5440ce25 MK |
702 | while (ath10k_ce_completed_send_next(ce_state, &transfer_context, |
703 | &ce_data, &nbytes, | |
704 | &transfer_id) == 0) { | |
a16942e6 | 705 | /* no need to call tx completion for NULL pointers */ |
726346fc MK |
706 | if (transfer_context == NULL) |
707 | continue; | |
708 | ||
2f5280da | 709 | cb->tx_completion(ar, transfer_context, transfer_id); |
5440ce25 | 710 | } |
5e3dd157 KV |
711 | } |
712 | ||
713 | /* Called by lower (CE) layer when data is received from the Target. */ | |
5440ce25 | 714 | static void ath10k_pci_ce_recv_data(struct ath10k_ce_pipe *ce_state) |
5e3dd157 KV |
715 | { |
716 | struct ath10k *ar = ce_state->ar; | |
717 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
87263e5b | 718 | struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id]; |
2f5280da | 719 | struct ath10k_hif_cb *cb = &ar_pci->msg_callbacks_current; |
5e3dd157 | 720 | struct sk_buff *skb; |
5440ce25 MK |
721 | void *transfer_context; |
722 | u32 ce_data; | |
2f5280da | 723 | unsigned int nbytes, max_nbytes; |
5440ce25 MK |
724 | unsigned int transfer_id; |
725 | unsigned int flags; | |
2f5280da | 726 | int err; |
5e3dd157 | 727 | |
5440ce25 MK |
728 | while (ath10k_ce_completed_recv_next(ce_state, &transfer_context, |
729 | &ce_data, &nbytes, &transfer_id, | |
730 | &flags) == 0) { | |
2f5280da MK |
731 | err = ath10k_pci_post_rx_pipe(pipe_info, 1); |
732 | if (unlikely(err)) { | |
733 | /* FIXME: retry */ | |
734 | ath10k_warn("failed to replenish CE rx ring %d: %d\n", | |
735 | pipe_info->pipe_num, err); | |
736 | } | |
5e3dd157 KV |
737 | |
738 | skb = transfer_context; | |
2f5280da | 739 | max_nbytes = skb->len + skb_tailroom(skb); |
5e3dd157 | 740 | dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr, |
2f5280da MK |
741 | max_nbytes, DMA_FROM_DEVICE); |
742 | ||
743 | if (unlikely(max_nbytes < nbytes)) { | |
744 | ath10k_warn("rxed more than expected (nbytes %d, max %d)", | |
745 | nbytes, max_nbytes); | |
746 | dev_kfree_skb_any(skb); | |
747 | continue; | |
748 | } | |
5e3dd157 | 749 | |
2f5280da MK |
750 | skb_put(skb, nbytes); |
751 | cb->rx_completion(ar, skb, pipe_info->pipe_num); | |
752 | } | |
5e3dd157 KV |
753 | } |
754 | ||
726346fc MK |
755 | static int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id, |
756 | struct ath10k_hif_sg_item *items, int n_items) | |
5e3dd157 | 757 | { |
5e3dd157 | 758 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); |
726346fc MK |
759 | struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id]; |
760 | struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl; | |
761 | struct ath10k_ce_ring *src_ring = ce_pipe->src_ring; | |
762 | unsigned int nentries_mask = src_ring->nentries_mask; | |
763 | unsigned int sw_index = src_ring->sw_index; | |
764 | unsigned int write_index = src_ring->write_index; | |
765 | int err, i; | |
5e3dd157 | 766 | |
726346fc | 767 | spin_lock_bh(&ar_pci->ce_lock); |
5e3dd157 | 768 | |
726346fc MK |
769 | if (unlikely(CE_RING_DELTA(nentries_mask, |
770 | write_index, sw_index - 1) < n_items)) { | |
771 | err = -ENOBUFS; | |
772 | goto unlock; | |
773 | } | |
5e3dd157 | 774 | |
726346fc MK |
775 | for (i = 0; i < n_items - 1; i++) { |
776 | ath10k_dbg(ATH10K_DBG_PCI, | |
777 | "pci tx item %d paddr 0x%08x len %d n_items %d\n", | |
778 | i, items[i].paddr, items[i].len, n_items); | |
779 | ath10k_dbg_dump(ATH10K_DBG_PCI_DUMP, NULL, "item data: ", | |
780 | items[i].vaddr, items[i].len); | |
5e3dd157 | 781 | |
726346fc MK |
782 | err = ath10k_ce_send_nolock(ce_pipe, |
783 | items[i].transfer_context, | |
784 | items[i].paddr, | |
785 | items[i].len, | |
786 | items[i].transfer_id, | |
787 | CE_SEND_FLAG_GATHER); | |
788 | if (err) | |
789 | goto unlock; | |
790 | } | |
791 | ||
792 | /* `i` is equal to `n_items -1` after for() */ | |
793 | ||
794 | ath10k_dbg(ATH10K_DBG_PCI, | |
795 | "pci tx item %d paddr 0x%08x len %d n_items %d\n", | |
796 | i, items[i].paddr, items[i].len, n_items); | |
797 | ath10k_dbg_dump(ATH10K_DBG_PCI_DUMP, NULL, "item data: ", | |
798 | items[i].vaddr, items[i].len); | |
799 | ||
800 | err = ath10k_ce_send_nolock(ce_pipe, | |
801 | items[i].transfer_context, | |
802 | items[i].paddr, | |
803 | items[i].len, | |
804 | items[i].transfer_id, | |
805 | 0); | |
806 | if (err) | |
807 | goto unlock; | |
808 | ||
809 | err = 0; | |
810 | unlock: | |
811 | spin_unlock_bh(&ar_pci->ce_lock); | |
812 | return err; | |
5e3dd157 KV |
813 | } |
814 | ||
815 | static u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe) | |
816 | { | |
817 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
50f87a67 KV |
818 | |
819 | ath10k_dbg(ATH10K_DBG_PCI, "pci hif get free queue number\n"); | |
820 | ||
3efcb3b4 | 821 | return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl); |
5e3dd157 KV |
822 | } |
823 | ||
824 | static void ath10k_pci_hif_dump_area(struct ath10k *ar) | |
825 | { | |
826 | u32 reg_dump_area = 0; | |
827 | u32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {}; | |
828 | u32 host_addr; | |
829 | int ret; | |
830 | u32 i; | |
831 | ||
832 | ath10k_err("firmware crashed!\n"); | |
833 | ath10k_err("hardware name %s version 0x%x\n", | |
834 | ar->hw_params.name, ar->target_version); | |
5ba88b39 | 835 | ath10k_err("firmware version: %s\n", ar->hw->wiphy->fw_version); |
5e3dd157 KV |
836 | |
837 | host_addr = host_interest_item_address(HI_ITEM(hi_failure_state)); | |
1d2b48d6 MK |
838 | ret = ath10k_pci_diag_read_mem(ar, host_addr, |
839 | ®_dump_area, sizeof(u32)); | |
840 | if (ret) { | |
841 | ath10k_err("failed to read FW dump area address: %d\n", ret); | |
5e3dd157 KV |
842 | return; |
843 | } | |
844 | ||
845 | ath10k_err("target register Dump Location: 0x%08X\n", reg_dump_area); | |
846 | ||
847 | ret = ath10k_pci_diag_read_mem(ar, reg_dump_area, | |
848 | ®_dump_values[0], | |
849 | REG_DUMP_COUNT_QCA988X * sizeof(u32)); | |
850 | if (ret != 0) { | |
1d2b48d6 | 851 | ath10k_err("failed to read FW dump area: %d\n", ret); |
5e3dd157 KV |
852 | return; |
853 | } | |
854 | ||
855 | BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4); | |
856 | ||
857 | ath10k_err("target Register Dump\n"); | |
858 | for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4) | |
859 | ath10k_err("[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n", | |
860 | i, | |
861 | reg_dump_values[i], | |
862 | reg_dump_values[i + 1], | |
863 | reg_dump_values[i + 2], | |
864 | reg_dump_values[i + 3]); | |
affd3217 | 865 | |
5e90de86 | 866 | queue_work(ar->workqueue, &ar->restart_work); |
5e3dd157 KV |
867 | } |
868 | ||
869 | static void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe, | |
870 | int force) | |
871 | { | |
50f87a67 KV |
872 | ath10k_dbg(ATH10K_DBG_PCI, "pci hif send complete check\n"); |
873 | ||
5e3dd157 KV |
874 | if (!force) { |
875 | int resources; | |
876 | /* | |
877 | * Decide whether to actually poll for completions, or just | |
878 | * wait for a later chance. | |
879 | * If there seem to be plenty of resources left, then just wait | |
880 | * since checking involves reading a CE register, which is a | |
881 | * relatively expensive operation. | |
882 | */ | |
883 | resources = ath10k_pci_hif_get_free_queue_number(ar, pipe); | |
884 | ||
885 | /* | |
886 | * If at least 50% of the total resources are still available, | |
887 | * don't bother checking again yet. | |
888 | */ | |
889 | if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1)) | |
890 | return; | |
891 | } | |
892 | ath10k_ce_per_engine_service(ar, pipe); | |
893 | } | |
894 | ||
e799bbff MK |
895 | static void ath10k_pci_hif_set_callbacks(struct ath10k *ar, |
896 | struct ath10k_hif_cb *callbacks) | |
5e3dd157 KV |
897 | { |
898 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
899 | ||
50f87a67 | 900 | ath10k_dbg(ATH10K_DBG_PCI, "pci hif set callbacks\n"); |
5e3dd157 KV |
901 | |
902 | memcpy(&ar_pci->msg_callbacks_current, callbacks, | |
903 | sizeof(ar_pci->msg_callbacks_current)); | |
904 | } | |
905 | ||
c80de12b | 906 | static int ath10k_pci_setup_ce_irq(struct ath10k *ar) |
5e3dd157 KV |
907 | { |
908 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
c80de12b MK |
909 | const struct ce_attr *attr; |
910 | struct ath10k_pci_pipe *pipe_info; | |
911 | int pipe_num, disable_interrupts; | |
5e3dd157 | 912 | |
c80de12b MK |
913 | for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) { |
914 | pipe_info = &ar_pci->pipe_info[pipe_num]; | |
915 | ||
916 | /* Handle Diagnostic CE specially */ | |
917 | if (pipe_info->ce_hdl == ar_pci->ce_diag) | |
918 | continue; | |
919 | ||
920 | attr = &host_ce_config_wlan[pipe_num]; | |
921 | ||
922 | if (attr->src_nentries) { | |
923 | disable_interrupts = attr->flags & CE_ATTR_DIS_INTR; | |
924 | ath10k_ce_send_cb_register(pipe_info->ce_hdl, | |
925 | ath10k_pci_ce_send_done, | |
926 | disable_interrupts); | |
927 | } | |
928 | ||
929 | if (attr->dest_nentries) | |
930 | ath10k_ce_recv_cb_register(pipe_info->ce_hdl, | |
931 | ath10k_pci_ce_recv_data); | |
932 | } | |
933 | ||
934 | return 0; | |
935 | } | |
936 | ||
96a9d0dc | 937 | static void ath10k_pci_kill_tasklet(struct ath10k *ar) |
5e3dd157 KV |
938 | { |
939 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
5e3dd157 | 940 | int i; |
5e3dd157 | 941 | |
5e3dd157 | 942 | tasklet_kill(&ar_pci->intr_tq); |
103d4f5e | 943 | tasklet_kill(&ar_pci->msi_fw_err); |
ab977bd0 | 944 | tasklet_kill(&ar_pci->early_irq_tasklet); |
5e3dd157 KV |
945 | |
946 | for (i = 0; i < CE_COUNT; i++) | |
947 | tasklet_kill(&ar_pci->pipe_info[i].intr); | |
96a9d0dc MK |
948 | } |
949 | ||
5e3dd157 KV |
950 | /* TODO - temporary mapping while we have too few CE's */ |
951 | static int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar, | |
952 | u16 service_id, u8 *ul_pipe, | |
953 | u8 *dl_pipe, int *ul_is_polled, | |
954 | int *dl_is_polled) | |
955 | { | |
956 | int ret = 0; | |
957 | ||
50f87a67 KV |
958 | ath10k_dbg(ATH10K_DBG_PCI, "pci hif map service\n"); |
959 | ||
5e3dd157 KV |
960 | /* polling for received messages not supported */ |
961 | *dl_is_polled = 0; | |
962 | ||
963 | switch (service_id) { | |
964 | case ATH10K_HTC_SVC_ID_HTT_DATA_MSG: | |
965 | /* | |
966 | * Host->target HTT gets its own pipe, so it can be polled | |
967 | * while other pipes are interrupt driven. | |
968 | */ | |
969 | *ul_pipe = 4; | |
970 | /* | |
971 | * Use the same target->host pipe for HTC ctrl, HTC raw | |
972 | * streams, and HTT. | |
973 | */ | |
974 | *dl_pipe = 1; | |
975 | break; | |
976 | ||
977 | case ATH10K_HTC_SVC_ID_RSVD_CTRL: | |
978 | case ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS: | |
979 | /* | |
980 | * Note: HTC_RAW_STREAMS_SVC is currently unused, and | |
981 | * HTC_CTRL_RSVD_SVC could share the same pipe as the | |
982 | * WMI services. So, if another CE is needed, change | |
983 | * this to *ul_pipe = 3, which frees up CE 0. | |
984 | */ | |
985 | /* *ul_pipe = 3; */ | |
986 | *ul_pipe = 0; | |
987 | *dl_pipe = 1; | |
988 | break; | |
989 | ||
990 | case ATH10K_HTC_SVC_ID_WMI_DATA_BK: | |
991 | case ATH10K_HTC_SVC_ID_WMI_DATA_BE: | |
992 | case ATH10K_HTC_SVC_ID_WMI_DATA_VI: | |
993 | case ATH10K_HTC_SVC_ID_WMI_DATA_VO: | |
994 | ||
995 | case ATH10K_HTC_SVC_ID_WMI_CONTROL: | |
996 | *ul_pipe = 3; | |
997 | *dl_pipe = 2; | |
998 | break; | |
999 | ||
1000 | /* pipe 5 unused */ | |
1001 | /* pipe 6 reserved */ | |
1002 | /* pipe 7 reserved */ | |
1003 | ||
1004 | default: | |
1005 | ret = -1; | |
1006 | break; | |
1007 | } | |
1008 | *ul_is_polled = | |
1009 | (host_ce_config_wlan[*ul_pipe].flags & CE_ATTR_DIS_INTR) != 0; | |
1010 | ||
1011 | return ret; | |
1012 | } | |
1013 | ||
1014 | static void ath10k_pci_hif_get_default_pipe(struct ath10k *ar, | |
1015 | u8 *ul_pipe, u8 *dl_pipe) | |
1016 | { | |
1017 | int ul_is_polled, dl_is_polled; | |
1018 | ||
50f87a67 KV |
1019 | ath10k_dbg(ATH10K_DBG_PCI, "pci hif get default pipe\n"); |
1020 | ||
5e3dd157 KV |
1021 | (void)ath10k_pci_hif_map_service_to_pipe(ar, |
1022 | ATH10K_HTC_SVC_ID_RSVD_CTRL, | |
1023 | ul_pipe, | |
1024 | dl_pipe, | |
1025 | &ul_is_polled, | |
1026 | &dl_is_polled); | |
1027 | } | |
1028 | ||
87263e5b | 1029 | static int ath10k_pci_post_rx_pipe(struct ath10k_pci_pipe *pipe_info, |
5e3dd157 KV |
1030 | int num) |
1031 | { | |
1032 | struct ath10k *ar = pipe_info->hif_ce_state; | |
1033 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2aa39115 | 1034 | struct ath10k_ce_pipe *ce_state = pipe_info->ce_hdl; |
5e3dd157 KV |
1035 | struct sk_buff *skb; |
1036 | dma_addr_t ce_data; | |
1037 | int i, ret = 0; | |
1038 | ||
1039 | if (pipe_info->buf_sz == 0) | |
1040 | return 0; | |
1041 | ||
1042 | for (i = 0; i < num; i++) { | |
1043 | skb = dev_alloc_skb(pipe_info->buf_sz); | |
1044 | if (!skb) { | |
1d2b48d6 | 1045 | ath10k_warn("failed to allocate skbuff for pipe %d\n", |
5e3dd157 KV |
1046 | num); |
1047 | ret = -ENOMEM; | |
1048 | goto err; | |
1049 | } | |
1050 | ||
1051 | WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb"); | |
1052 | ||
1053 | ce_data = dma_map_single(ar->dev, skb->data, | |
1054 | skb->len + skb_tailroom(skb), | |
1055 | DMA_FROM_DEVICE); | |
1056 | ||
1057 | if (unlikely(dma_mapping_error(ar->dev, ce_data))) { | |
1d2b48d6 | 1058 | ath10k_warn("failed to DMA map sk_buff\n"); |
5e3dd157 KV |
1059 | dev_kfree_skb_any(skb); |
1060 | ret = -EIO; | |
1061 | goto err; | |
1062 | } | |
1063 | ||
1064 | ATH10K_SKB_CB(skb)->paddr = ce_data; | |
1065 | ||
1066 | pci_dma_sync_single_for_device(ar_pci->pdev, ce_data, | |
1067 | pipe_info->buf_sz, | |
1068 | PCI_DMA_FROMDEVICE); | |
1069 | ||
1070 | ret = ath10k_ce_recv_buf_enqueue(ce_state, (void *)skb, | |
1071 | ce_data); | |
1072 | if (ret) { | |
1d2b48d6 | 1073 | ath10k_warn("failed to enqueue to pipe %d: %d\n", |
5e3dd157 KV |
1074 | num, ret); |
1075 | goto err; | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | return ret; | |
1080 | ||
1081 | err: | |
1082 | ath10k_pci_rx_pipe_cleanup(pipe_info); | |
1083 | return ret; | |
1084 | } | |
1085 | ||
1086 | static int ath10k_pci_post_rx(struct ath10k *ar) | |
1087 | { | |
1088 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
87263e5b | 1089 | struct ath10k_pci_pipe *pipe_info; |
5e3dd157 KV |
1090 | const struct ce_attr *attr; |
1091 | int pipe_num, ret = 0; | |
1092 | ||
fad6ed78 | 1093 | for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) { |
5e3dd157 KV |
1094 | pipe_info = &ar_pci->pipe_info[pipe_num]; |
1095 | attr = &host_ce_config_wlan[pipe_num]; | |
1096 | ||
1097 | if (attr->dest_nentries == 0) | |
1098 | continue; | |
1099 | ||
1100 | ret = ath10k_pci_post_rx_pipe(pipe_info, | |
1101 | attr->dest_nentries - 1); | |
1102 | if (ret) { | |
1d2b48d6 MK |
1103 | ath10k_warn("failed to post RX buffer for pipe %d: %d\n", |
1104 | pipe_num, ret); | |
5e3dd157 KV |
1105 | |
1106 | for (; pipe_num >= 0; pipe_num--) { | |
1107 | pipe_info = &ar_pci->pipe_info[pipe_num]; | |
1108 | ath10k_pci_rx_pipe_cleanup(pipe_info); | |
1109 | } | |
1110 | return ret; | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | static int ath10k_pci_hif_start(struct ath10k *ar) | |
1118 | { | |
1119 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
ab977bd0 | 1120 | int ret, ret_early; |
5e3dd157 | 1121 | |
50f87a67 KV |
1122 | ath10k_dbg(ATH10K_DBG_BOOT, "boot hif start\n"); |
1123 | ||
ab977bd0 MK |
1124 | ath10k_pci_free_early_irq(ar); |
1125 | ath10k_pci_kill_tasklet(ar); | |
5e3dd157 | 1126 | |
5d1aa946 MK |
1127 | ret = ath10k_pci_request_irq(ar); |
1128 | if (ret) { | |
1129 | ath10k_warn("failed to post RX buffers for all pipes: %d\n", | |
1130 | ret); | |
2f5280da | 1131 | goto err_early_irq; |
5d1aa946 MK |
1132 | } |
1133 | ||
c80de12b MK |
1134 | ret = ath10k_pci_setup_ce_irq(ar); |
1135 | if (ret) { | |
1136 | ath10k_warn("failed to setup CE interrupts: %d\n", ret); | |
5d1aa946 | 1137 | goto err_stop; |
5e3dd157 KV |
1138 | } |
1139 | ||
1140 | /* Post buffers once to start things off. */ | |
1141 | ret = ath10k_pci_post_rx(ar); | |
1142 | if (ret) { | |
1d2b48d6 MK |
1143 | ath10k_warn("failed to post RX buffers for all pipes: %d\n", |
1144 | ret); | |
5d1aa946 | 1145 | goto err_stop; |
5e3dd157 KV |
1146 | } |
1147 | ||
1148 | ar_pci->started = 1; | |
1149 | return 0; | |
c80de12b | 1150 | |
5d1aa946 MK |
1151 | err_stop: |
1152 | ath10k_ce_disable_interrupts(ar); | |
1153 | ath10k_pci_free_irq(ar); | |
1154 | ath10k_pci_kill_tasklet(ar); | |
ab977bd0 MK |
1155 | err_early_irq: |
1156 | /* Though there should be no interrupts (device was reset) | |
1157 | * power_down() expects the early IRQ to be installed as per the | |
1158 | * driver lifecycle. */ | |
1159 | ret_early = ath10k_pci_request_early_irq(ar); | |
1160 | if (ret_early) | |
1161 | ath10k_warn("failed to re-enable early irq: %d\n", ret_early); | |
1162 | ||
c80de12b | 1163 | return ret; |
5e3dd157 KV |
1164 | } |
1165 | ||
87263e5b | 1166 | static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pipe_info) |
5e3dd157 KV |
1167 | { |
1168 | struct ath10k *ar; | |
1169 | struct ath10k_pci *ar_pci; | |
2aa39115 | 1170 | struct ath10k_ce_pipe *ce_hdl; |
5e3dd157 KV |
1171 | u32 buf_sz; |
1172 | struct sk_buff *netbuf; | |
1173 | u32 ce_data; | |
1174 | ||
1175 | buf_sz = pipe_info->buf_sz; | |
1176 | ||
1177 | /* Unused Copy Engine */ | |
1178 | if (buf_sz == 0) | |
1179 | return; | |
1180 | ||
1181 | ar = pipe_info->hif_ce_state; | |
1182 | ar_pci = ath10k_pci_priv(ar); | |
1183 | ||
1184 | if (!ar_pci->started) | |
1185 | return; | |
1186 | ||
1187 | ce_hdl = pipe_info->ce_hdl; | |
1188 | ||
1189 | while (ath10k_ce_revoke_recv_next(ce_hdl, (void **)&netbuf, | |
1190 | &ce_data) == 0) { | |
1191 | dma_unmap_single(ar->dev, ATH10K_SKB_CB(netbuf)->paddr, | |
1192 | netbuf->len + skb_tailroom(netbuf), | |
1193 | DMA_FROM_DEVICE); | |
1194 | dev_kfree_skb_any(netbuf); | |
1195 | } | |
1196 | } | |
1197 | ||
87263e5b | 1198 | static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pipe_info) |
5e3dd157 KV |
1199 | { |
1200 | struct ath10k *ar; | |
1201 | struct ath10k_pci *ar_pci; | |
2aa39115 | 1202 | struct ath10k_ce_pipe *ce_hdl; |
5e3dd157 KV |
1203 | struct sk_buff *netbuf; |
1204 | u32 ce_data; | |
1205 | unsigned int nbytes; | |
1206 | unsigned int id; | |
1207 | u32 buf_sz; | |
1208 | ||
1209 | buf_sz = pipe_info->buf_sz; | |
1210 | ||
1211 | /* Unused Copy Engine */ | |
1212 | if (buf_sz == 0) | |
1213 | return; | |
1214 | ||
1215 | ar = pipe_info->hif_ce_state; | |
1216 | ar_pci = ath10k_pci_priv(ar); | |
1217 | ||
1218 | if (!ar_pci->started) | |
1219 | return; | |
1220 | ||
1221 | ce_hdl = pipe_info->ce_hdl; | |
1222 | ||
1223 | while (ath10k_ce_cancel_send_next(ce_hdl, (void **)&netbuf, | |
1224 | &ce_data, &nbytes, &id) == 0) { | |
a16942e6 MK |
1225 | /* no need to call tx completion for NULL pointers */ |
1226 | if (!netbuf) | |
2415fc16 | 1227 | continue; |
2415fc16 | 1228 | |
e9bb0aa3 KV |
1229 | ar_pci->msg_callbacks_current.tx_completion(ar, |
1230 | netbuf, | |
1231 | id); | |
5e3dd157 KV |
1232 | } |
1233 | } | |
1234 | ||
1235 | /* | |
1236 | * Cleanup residual buffers for device shutdown: | |
1237 | * buffers that were enqueued for receive | |
1238 | * buffers that were to be sent | |
1239 | * Note: Buffers that had completed but which were | |
1240 | * not yet processed are on a completion queue. They | |
1241 | * are handled when the completion thread shuts down. | |
1242 | */ | |
1243 | static void ath10k_pci_buffer_cleanup(struct ath10k *ar) | |
1244 | { | |
1245 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
1246 | int pipe_num; | |
1247 | ||
fad6ed78 | 1248 | for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) { |
87263e5b | 1249 | struct ath10k_pci_pipe *pipe_info; |
5e3dd157 KV |
1250 | |
1251 | pipe_info = &ar_pci->pipe_info[pipe_num]; | |
1252 | ath10k_pci_rx_pipe_cleanup(pipe_info); | |
1253 | ath10k_pci_tx_pipe_cleanup(pipe_info); | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | static void ath10k_pci_ce_deinit(struct ath10k *ar) | |
1258 | { | |
1259 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
87263e5b | 1260 | struct ath10k_pci_pipe *pipe_info; |
5e3dd157 KV |
1261 | int pipe_num; |
1262 | ||
fad6ed78 | 1263 | for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) { |
5e3dd157 KV |
1264 | pipe_info = &ar_pci->pipe_info[pipe_num]; |
1265 | if (pipe_info->ce_hdl) { | |
1266 | ath10k_ce_deinit(pipe_info->ce_hdl); | |
1267 | pipe_info->ce_hdl = NULL; | |
1268 | pipe_info->buf_sz = 0; | |
1269 | } | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | static void ath10k_pci_hif_stop(struct ath10k *ar) | |
1274 | { | |
32270b61 | 1275 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); |
5d1aa946 | 1276 | int ret; |
32270b61 | 1277 | |
50f87a67 | 1278 | ath10k_dbg(ATH10K_DBG_BOOT, "boot hif stop\n"); |
5e3dd157 | 1279 | |
5d1aa946 MK |
1280 | ret = ath10k_ce_disable_interrupts(ar); |
1281 | if (ret) | |
1282 | ath10k_warn("failed to disable CE interrupts: %d\n", ret); | |
32270b61 | 1283 | |
5d1aa946 MK |
1284 | ath10k_pci_free_irq(ar); |
1285 | ath10k_pci_kill_tasklet(ar); | |
5e3dd157 | 1286 | |
ab977bd0 MK |
1287 | ret = ath10k_pci_request_early_irq(ar); |
1288 | if (ret) | |
1289 | ath10k_warn("failed to re-enable early irq: %d\n", ret); | |
1290 | ||
5e3dd157 KV |
1291 | /* At this point, asynchronous threads are stopped, the target should |
1292 | * not DMA nor interrupt. We process the leftovers and then free | |
1293 | * everything else up. */ | |
1294 | ||
5e3dd157 | 1295 | ath10k_pci_buffer_cleanup(ar); |
32270b61 | 1296 | |
6a42a47e MK |
1297 | /* Make the sure the device won't access any structures on the host by |
1298 | * resetting it. The device was fed with PCI CE ringbuffer | |
1299 | * configuration during init. If ringbuffers are freed and the device | |
1300 | * were to access them this could lead to memory corruption on the | |
1301 | * host. */ | |
fc36e3ff | 1302 | ath10k_pci_warm_reset(ar); |
6a42a47e | 1303 | |
32270b61 | 1304 | ar_pci->started = 0; |
5e3dd157 KV |
1305 | } |
1306 | ||
1307 | static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar, | |
1308 | void *req, u32 req_len, | |
1309 | void *resp, u32 *resp_len) | |
1310 | { | |
1311 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2aa39115 MK |
1312 | struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG]; |
1313 | struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST]; | |
1314 | struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl; | |
1315 | struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl; | |
5e3dd157 KV |
1316 | dma_addr_t req_paddr = 0; |
1317 | dma_addr_t resp_paddr = 0; | |
1318 | struct bmi_xfer xfer = {}; | |
1319 | void *treq, *tresp = NULL; | |
1320 | int ret = 0; | |
1321 | ||
85622cde MK |
1322 | might_sleep(); |
1323 | ||
5e3dd157 KV |
1324 | if (resp && !resp_len) |
1325 | return -EINVAL; | |
1326 | ||
1327 | if (resp && resp_len && *resp_len == 0) | |
1328 | return -EINVAL; | |
1329 | ||
1330 | treq = kmemdup(req, req_len, GFP_KERNEL); | |
1331 | if (!treq) | |
1332 | return -ENOMEM; | |
1333 | ||
1334 | req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE); | |
1335 | ret = dma_mapping_error(ar->dev, req_paddr); | |
1336 | if (ret) | |
1337 | goto err_dma; | |
1338 | ||
1339 | if (resp && resp_len) { | |
1340 | tresp = kzalloc(*resp_len, GFP_KERNEL); | |
1341 | if (!tresp) { | |
1342 | ret = -ENOMEM; | |
1343 | goto err_req; | |
1344 | } | |
1345 | ||
1346 | resp_paddr = dma_map_single(ar->dev, tresp, *resp_len, | |
1347 | DMA_FROM_DEVICE); | |
1348 | ret = dma_mapping_error(ar->dev, resp_paddr); | |
1349 | if (ret) | |
1350 | goto err_req; | |
1351 | ||
1352 | xfer.wait_for_resp = true; | |
1353 | xfer.resp_len = 0; | |
1354 | ||
1355 | ath10k_ce_recv_buf_enqueue(ce_rx, &xfer, resp_paddr); | |
1356 | } | |
1357 | ||
1358 | init_completion(&xfer.done); | |
1359 | ||
1360 | ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0); | |
1361 | if (ret) | |
1362 | goto err_resp; | |
1363 | ||
85622cde MK |
1364 | ret = ath10k_pci_bmi_wait(ce_tx, ce_rx, &xfer); |
1365 | if (ret) { | |
5e3dd157 KV |
1366 | u32 unused_buffer; |
1367 | unsigned int unused_nbytes; | |
1368 | unsigned int unused_id; | |
1369 | ||
5e3dd157 KV |
1370 | ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer, |
1371 | &unused_nbytes, &unused_id); | |
1372 | } else { | |
1373 | /* non-zero means we did not time out */ | |
1374 | ret = 0; | |
1375 | } | |
1376 | ||
1377 | err_resp: | |
1378 | if (resp) { | |
1379 | u32 unused_buffer; | |
1380 | ||
1381 | ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer); | |
1382 | dma_unmap_single(ar->dev, resp_paddr, | |
1383 | *resp_len, DMA_FROM_DEVICE); | |
1384 | } | |
1385 | err_req: | |
1386 | dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE); | |
1387 | ||
1388 | if (ret == 0 && resp_len) { | |
1389 | *resp_len = min(*resp_len, xfer.resp_len); | |
1390 | memcpy(resp, tresp, xfer.resp_len); | |
1391 | } | |
1392 | err_dma: | |
1393 | kfree(treq); | |
1394 | kfree(tresp); | |
1395 | ||
1396 | return ret; | |
1397 | } | |
1398 | ||
5440ce25 | 1399 | static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state) |
5e3dd157 | 1400 | { |
5440ce25 MK |
1401 | struct bmi_xfer *xfer; |
1402 | u32 ce_data; | |
1403 | unsigned int nbytes; | |
1404 | unsigned int transfer_id; | |
1405 | ||
1406 | if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer, &ce_data, | |
1407 | &nbytes, &transfer_id)) | |
1408 | return; | |
5e3dd157 KV |
1409 | |
1410 | if (xfer->wait_for_resp) | |
1411 | return; | |
1412 | ||
1413 | complete(&xfer->done); | |
1414 | } | |
1415 | ||
5440ce25 | 1416 | static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state) |
5e3dd157 | 1417 | { |
5440ce25 MK |
1418 | struct bmi_xfer *xfer; |
1419 | u32 ce_data; | |
1420 | unsigned int nbytes; | |
1421 | unsigned int transfer_id; | |
1422 | unsigned int flags; | |
1423 | ||
1424 | if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer, &ce_data, | |
1425 | &nbytes, &transfer_id, &flags)) | |
1426 | return; | |
5e3dd157 KV |
1427 | |
1428 | if (!xfer->wait_for_resp) { | |
1429 | ath10k_warn("unexpected: BMI data received; ignoring\n"); | |
1430 | return; | |
1431 | } | |
1432 | ||
1433 | xfer->resp_len = nbytes; | |
1434 | complete(&xfer->done); | |
1435 | } | |
1436 | ||
85622cde MK |
1437 | static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe, |
1438 | struct ath10k_ce_pipe *rx_pipe, | |
1439 | struct bmi_xfer *xfer) | |
1440 | { | |
1441 | unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ; | |
1442 | ||
1443 | while (time_before_eq(jiffies, timeout)) { | |
1444 | ath10k_pci_bmi_send_done(tx_pipe); | |
1445 | ath10k_pci_bmi_recv_data(rx_pipe); | |
1446 | ||
1447 | if (completion_done(&xfer->done)) | |
1448 | return 0; | |
1449 | ||
1450 | schedule(); | |
1451 | } | |
1452 | ||
1453 | return -ETIMEDOUT; | |
1454 | } | |
1455 | ||
5e3dd157 KV |
1456 | /* |
1457 | * Map from service/endpoint to Copy Engine. | |
1458 | * This table is derived from the CE_PCI TABLE, above. | |
1459 | * It is passed to the Target at startup for use by firmware. | |
1460 | */ | |
1461 | static const struct service_to_pipe target_service_to_ce_map_wlan[] = { | |
1462 | { | |
1463 | ATH10K_HTC_SVC_ID_WMI_DATA_VO, | |
1464 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1465 | 3, | |
1466 | }, | |
1467 | { | |
1468 | ATH10K_HTC_SVC_ID_WMI_DATA_VO, | |
1469 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1470 | 2, | |
1471 | }, | |
1472 | { | |
1473 | ATH10K_HTC_SVC_ID_WMI_DATA_BK, | |
1474 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1475 | 3, | |
1476 | }, | |
1477 | { | |
1478 | ATH10K_HTC_SVC_ID_WMI_DATA_BK, | |
1479 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1480 | 2, | |
1481 | }, | |
1482 | { | |
1483 | ATH10K_HTC_SVC_ID_WMI_DATA_BE, | |
1484 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1485 | 3, | |
1486 | }, | |
1487 | { | |
1488 | ATH10K_HTC_SVC_ID_WMI_DATA_BE, | |
1489 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1490 | 2, | |
1491 | }, | |
1492 | { | |
1493 | ATH10K_HTC_SVC_ID_WMI_DATA_VI, | |
1494 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1495 | 3, | |
1496 | }, | |
1497 | { | |
1498 | ATH10K_HTC_SVC_ID_WMI_DATA_VI, | |
1499 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1500 | 2, | |
1501 | }, | |
1502 | { | |
1503 | ATH10K_HTC_SVC_ID_WMI_CONTROL, | |
1504 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1505 | 3, | |
1506 | }, | |
1507 | { | |
1508 | ATH10K_HTC_SVC_ID_WMI_CONTROL, | |
1509 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1510 | 2, | |
1511 | }, | |
1512 | { | |
1513 | ATH10K_HTC_SVC_ID_RSVD_CTRL, | |
1514 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1515 | 0, /* could be moved to 3 (share with WMI) */ | |
1516 | }, | |
1517 | { | |
1518 | ATH10K_HTC_SVC_ID_RSVD_CTRL, | |
1519 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1520 | 1, | |
1521 | }, | |
1522 | { | |
1523 | ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS, /* not currently used */ | |
1524 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1525 | 0, | |
1526 | }, | |
1527 | { | |
1528 | ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS, /* not currently used */ | |
1529 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1530 | 1, | |
1531 | }, | |
1532 | { | |
1533 | ATH10K_HTC_SVC_ID_HTT_DATA_MSG, | |
1534 | PIPEDIR_OUT, /* out = UL = host -> target */ | |
1535 | 4, | |
1536 | }, | |
1537 | { | |
1538 | ATH10K_HTC_SVC_ID_HTT_DATA_MSG, | |
1539 | PIPEDIR_IN, /* in = DL = target -> host */ | |
1540 | 1, | |
1541 | }, | |
1542 | ||
1543 | /* (Additions here) */ | |
1544 | ||
1545 | { /* Must be last */ | |
1546 | 0, | |
1547 | 0, | |
1548 | 0, | |
1549 | }, | |
1550 | }; | |
1551 | ||
1552 | /* | |
1553 | * Send an interrupt to the device to wake up the Target CPU | |
1554 | * so it has an opportunity to notice any changed state. | |
1555 | */ | |
1556 | static int ath10k_pci_wake_target_cpu(struct ath10k *ar) | |
1557 | { | |
1558 | int ret; | |
1559 | u32 core_ctrl; | |
1560 | ||
1561 | ret = ath10k_pci_diag_read_access(ar, SOC_CORE_BASE_ADDRESS | | |
1562 | CORE_CTRL_ADDRESS, | |
1563 | &core_ctrl); | |
1564 | if (ret) { | |
1d2b48d6 | 1565 | ath10k_warn("failed to read core_ctrl: %d\n", ret); |
5e3dd157 KV |
1566 | return ret; |
1567 | } | |
1568 | ||
1569 | /* A_INUM_FIRMWARE interrupt to Target CPU */ | |
1570 | core_ctrl |= CORE_CTRL_CPU_INTR_MASK; | |
1571 | ||
1572 | ret = ath10k_pci_diag_write_access(ar, SOC_CORE_BASE_ADDRESS | | |
1573 | CORE_CTRL_ADDRESS, | |
1574 | core_ctrl); | |
1d2b48d6 MK |
1575 | if (ret) { |
1576 | ath10k_warn("failed to set target CPU interrupt mask: %d\n", | |
1577 | ret); | |
1578 | return ret; | |
1579 | } | |
5e3dd157 | 1580 | |
1d2b48d6 | 1581 | return 0; |
5e3dd157 KV |
1582 | } |
1583 | ||
1584 | static int ath10k_pci_init_config(struct ath10k *ar) | |
1585 | { | |
1586 | u32 interconnect_targ_addr; | |
1587 | u32 pcie_state_targ_addr = 0; | |
1588 | u32 pipe_cfg_targ_addr = 0; | |
1589 | u32 svc_to_pipe_map = 0; | |
1590 | u32 pcie_config_flags = 0; | |
1591 | u32 ealloc_value; | |
1592 | u32 ealloc_targ_addr; | |
1593 | u32 flag2_value; | |
1594 | u32 flag2_targ_addr; | |
1595 | int ret = 0; | |
1596 | ||
1597 | /* Download to Target the CE Config and the service-to-CE map */ | |
1598 | interconnect_targ_addr = | |
1599 | host_interest_item_address(HI_ITEM(hi_interconnect_state)); | |
1600 | ||
1601 | /* Supply Target-side CE configuration */ | |
1602 | ret = ath10k_pci_diag_read_access(ar, interconnect_targ_addr, | |
1603 | &pcie_state_targ_addr); | |
1604 | if (ret != 0) { | |
1605 | ath10k_err("Failed to get pcie state addr: %d\n", ret); | |
1606 | return ret; | |
1607 | } | |
1608 | ||
1609 | if (pcie_state_targ_addr == 0) { | |
1610 | ret = -EIO; | |
1611 | ath10k_err("Invalid pcie state addr\n"); | |
1612 | return ret; | |
1613 | } | |
1614 | ||
1615 | ret = ath10k_pci_diag_read_access(ar, pcie_state_targ_addr + | |
1616 | offsetof(struct pcie_state, | |
1617 | pipe_cfg_addr), | |
1618 | &pipe_cfg_targ_addr); | |
1619 | if (ret != 0) { | |
1620 | ath10k_err("Failed to get pipe cfg addr: %d\n", ret); | |
1621 | return ret; | |
1622 | } | |
1623 | ||
1624 | if (pipe_cfg_targ_addr == 0) { | |
1625 | ret = -EIO; | |
1626 | ath10k_err("Invalid pipe cfg addr\n"); | |
1627 | return ret; | |
1628 | } | |
1629 | ||
1630 | ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr, | |
1631 | target_ce_config_wlan, | |
1632 | sizeof(target_ce_config_wlan)); | |
1633 | ||
1634 | if (ret != 0) { | |
1635 | ath10k_err("Failed to write pipe cfg: %d\n", ret); | |
1636 | return ret; | |
1637 | } | |
1638 | ||
1639 | ret = ath10k_pci_diag_read_access(ar, pcie_state_targ_addr + | |
1640 | offsetof(struct pcie_state, | |
1641 | svc_to_pipe_map), | |
1642 | &svc_to_pipe_map); | |
1643 | if (ret != 0) { | |
1644 | ath10k_err("Failed to get svc/pipe map: %d\n", ret); | |
1645 | return ret; | |
1646 | } | |
1647 | ||
1648 | if (svc_to_pipe_map == 0) { | |
1649 | ret = -EIO; | |
1650 | ath10k_err("Invalid svc_to_pipe map\n"); | |
1651 | return ret; | |
1652 | } | |
1653 | ||
1654 | ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map, | |
1655 | target_service_to_ce_map_wlan, | |
1656 | sizeof(target_service_to_ce_map_wlan)); | |
1657 | if (ret != 0) { | |
1658 | ath10k_err("Failed to write svc/pipe map: %d\n", ret); | |
1659 | return ret; | |
1660 | } | |
1661 | ||
1662 | ret = ath10k_pci_diag_read_access(ar, pcie_state_targ_addr + | |
1663 | offsetof(struct pcie_state, | |
1664 | config_flags), | |
1665 | &pcie_config_flags); | |
1666 | if (ret != 0) { | |
1667 | ath10k_err("Failed to get pcie config_flags: %d\n", ret); | |
1668 | return ret; | |
1669 | } | |
1670 | ||
1671 | pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1; | |
1672 | ||
1673 | ret = ath10k_pci_diag_write_mem(ar, pcie_state_targ_addr + | |
1674 | offsetof(struct pcie_state, config_flags), | |
1675 | &pcie_config_flags, | |
1676 | sizeof(pcie_config_flags)); | |
1677 | if (ret != 0) { | |
1678 | ath10k_err("Failed to write pcie config_flags: %d\n", ret); | |
1679 | return ret; | |
1680 | } | |
1681 | ||
1682 | /* configure early allocation */ | |
1683 | ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc)); | |
1684 | ||
1685 | ret = ath10k_pci_diag_read_access(ar, ealloc_targ_addr, &ealloc_value); | |
1686 | if (ret != 0) { | |
1687 | ath10k_err("Faile to get early alloc val: %d\n", ret); | |
1688 | return ret; | |
1689 | } | |
1690 | ||
1691 | /* first bank is switched to IRAM */ | |
1692 | ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) & | |
1693 | HI_EARLY_ALLOC_MAGIC_MASK); | |
1694 | ealloc_value |= ((1 << HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) & | |
1695 | HI_EARLY_ALLOC_IRAM_BANKS_MASK); | |
1696 | ||
1697 | ret = ath10k_pci_diag_write_access(ar, ealloc_targ_addr, ealloc_value); | |
1698 | if (ret != 0) { | |
1699 | ath10k_err("Failed to set early alloc val: %d\n", ret); | |
1700 | return ret; | |
1701 | } | |
1702 | ||
1703 | /* Tell Target to proceed with initialization */ | |
1704 | flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2)); | |
1705 | ||
1706 | ret = ath10k_pci_diag_read_access(ar, flag2_targ_addr, &flag2_value); | |
1707 | if (ret != 0) { | |
1708 | ath10k_err("Failed to get option val: %d\n", ret); | |
1709 | return ret; | |
1710 | } | |
1711 | ||
1712 | flag2_value |= HI_OPTION_EARLY_CFG_DONE; | |
1713 | ||
1714 | ret = ath10k_pci_diag_write_access(ar, flag2_targ_addr, flag2_value); | |
1715 | if (ret != 0) { | |
1716 | ath10k_err("Failed to set option val: %d\n", ret); | |
1717 | return ret; | |
1718 | } | |
1719 | ||
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | ||
1724 | ||
1725 | static int ath10k_pci_ce_init(struct ath10k *ar) | |
1726 | { | |
1727 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
87263e5b | 1728 | struct ath10k_pci_pipe *pipe_info; |
5e3dd157 KV |
1729 | const struct ce_attr *attr; |
1730 | int pipe_num; | |
1731 | ||
fad6ed78 | 1732 | for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) { |
5e3dd157 KV |
1733 | pipe_info = &ar_pci->pipe_info[pipe_num]; |
1734 | pipe_info->pipe_num = pipe_num; | |
1735 | pipe_info->hif_ce_state = ar; | |
1736 | attr = &host_ce_config_wlan[pipe_num]; | |
1737 | ||
1738 | pipe_info->ce_hdl = ath10k_ce_init(ar, pipe_num, attr); | |
1739 | if (pipe_info->ce_hdl == NULL) { | |
1d2b48d6 | 1740 | ath10k_err("failed to initialize CE for pipe: %d\n", |
5e3dd157 KV |
1741 | pipe_num); |
1742 | ||
1743 | /* It is safe to call it here. It checks if ce_hdl is | |
1744 | * valid for each pipe */ | |
1745 | ath10k_pci_ce_deinit(ar); | |
1746 | return -1; | |
1747 | } | |
1748 | ||
fad6ed78 | 1749 | if (pipe_num == CE_COUNT - 1) { |
5e3dd157 KV |
1750 | /* |
1751 | * Reserve the ultimate CE for | |
1752 | * diagnostic Window support | |
1753 | */ | |
fad6ed78 | 1754 | ar_pci->ce_diag = pipe_info->ce_hdl; |
5e3dd157 KV |
1755 | continue; |
1756 | } | |
1757 | ||
1758 | pipe_info->buf_sz = (size_t) (attr->src_sz_max); | |
1759 | } | |
1760 | ||
5e3dd157 KV |
1761 | return 0; |
1762 | } | |
1763 | ||
1764 | static void ath10k_pci_fw_interrupt_handler(struct ath10k *ar) | |
1765 | { | |
1766 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
b39712ce | 1767 | u32 fw_indicator; |
5e3dd157 KV |
1768 | |
1769 | ath10k_pci_wake(ar); | |
1770 | ||
b39712ce | 1771 | fw_indicator = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS); |
5e3dd157 KV |
1772 | |
1773 | if (fw_indicator & FW_IND_EVENT_PENDING) { | |
1774 | /* ACK: clear Target-side pending event */ | |
b39712ce | 1775 | ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, |
5e3dd157 KV |
1776 | fw_indicator & ~FW_IND_EVENT_PENDING); |
1777 | ||
1778 | if (ar_pci->started) { | |
1779 | ath10k_pci_hif_dump_area(ar); | |
1780 | } else { | |
1781 | /* | |
1782 | * Probable Target failure before we're prepared | |
1783 | * to handle it. Generally unexpected. | |
1784 | */ | |
1785 | ath10k_warn("early firmware event indicated\n"); | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | ath10k_pci_sleep(ar); | |
1790 | } | |
1791 | ||
fc36e3ff MK |
1792 | static int ath10k_pci_warm_reset(struct ath10k *ar) |
1793 | { | |
fc36e3ff MK |
1794 | int ret = 0; |
1795 | u32 val; | |
1796 | ||
50f87a67 | 1797 | ath10k_dbg(ATH10K_DBG_BOOT, "boot warm reset\n"); |
fc36e3ff MK |
1798 | |
1799 | ret = ath10k_do_pci_wake(ar); | |
1800 | if (ret) { | |
1801 | ath10k_err("failed to wake up target: %d\n", ret); | |
1802 | return ret; | |
1803 | } | |
1804 | ||
1805 | /* debug */ | |
1806 | val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + | |
1807 | PCIE_INTR_CAUSE_ADDRESS); | |
1808 | ath10k_dbg(ATH10K_DBG_BOOT, "boot host cpu intr cause: 0x%08x\n", val); | |
1809 | ||
1810 | val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + | |
1811 | CPU_INTR_ADDRESS); | |
1812 | ath10k_dbg(ATH10K_DBG_BOOT, "boot target cpu intr cause: 0x%08x\n", | |
1813 | val); | |
1814 | ||
1815 | /* disable pending irqs */ | |
1816 | ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + | |
1817 | PCIE_INTR_ENABLE_ADDRESS, 0); | |
1818 | ||
1819 | ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + | |
1820 | PCIE_INTR_CLR_ADDRESS, ~0); | |
1821 | ||
1822 | msleep(100); | |
1823 | ||
1824 | /* clear fw indicator */ | |
b39712ce | 1825 | ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0); |
fc36e3ff MK |
1826 | |
1827 | /* clear target LF timer interrupts */ | |
1828 | val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + | |
1829 | SOC_LF_TIMER_CONTROL0_ADDRESS); | |
1830 | ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + | |
1831 | SOC_LF_TIMER_CONTROL0_ADDRESS, | |
1832 | val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK); | |
1833 | ||
1834 | /* reset CE */ | |
1835 | val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + | |
1836 | SOC_RESET_CONTROL_ADDRESS); | |
1837 | ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS, | |
1838 | val | SOC_RESET_CONTROL_CE_RST_MASK); | |
1839 | val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + | |
1840 | SOC_RESET_CONTROL_ADDRESS); | |
1841 | msleep(10); | |
1842 | ||
1843 | /* unreset CE */ | |
1844 | ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS, | |
1845 | val & ~SOC_RESET_CONTROL_CE_RST_MASK); | |
1846 | val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + | |
1847 | SOC_RESET_CONTROL_ADDRESS); | |
1848 | msleep(10); | |
1849 | ||
1850 | /* debug */ | |
1851 | val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + | |
1852 | PCIE_INTR_CAUSE_ADDRESS); | |
1853 | ath10k_dbg(ATH10K_DBG_BOOT, "boot host cpu intr cause: 0x%08x\n", val); | |
1854 | ||
1855 | val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + | |
1856 | CPU_INTR_ADDRESS); | |
1857 | ath10k_dbg(ATH10K_DBG_BOOT, "boot target cpu intr cause: 0x%08x\n", | |
1858 | val); | |
1859 | ||
1860 | /* CPU warm reset */ | |
1861 | val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + | |
1862 | SOC_RESET_CONTROL_ADDRESS); | |
1863 | ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS, | |
1864 | val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK); | |
1865 | ||
1866 | val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + | |
1867 | SOC_RESET_CONTROL_ADDRESS); | |
1868 | ath10k_dbg(ATH10K_DBG_BOOT, "boot target reset state: 0x%08x\n", val); | |
1869 | ||
1870 | msleep(100); | |
1871 | ||
1872 | ath10k_dbg(ATH10K_DBG_BOOT, "boot warm reset complete\n"); | |
1873 | ||
1874 | ath10k_do_pci_sleep(ar); | |
1875 | return ret; | |
1876 | } | |
1877 | ||
1878 | static int __ath10k_pci_hif_power_up(struct ath10k *ar, bool cold_reset) | |
8c5c5368 | 1879 | { |
8cc8df90 | 1880 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); |
95cbb6a8 | 1881 | const char *irq_mode; |
8c5c5368 MK |
1882 | int ret; |
1883 | ||
1884 | /* | |
1885 | * Bring the target up cleanly. | |
1886 | * | |
1887 | * The target may be in an undefined state with an AUX-powered Target | |
1888 | * and a Host in WoW mode. If the Host crashes, loses power, or is | |
1889 | * restarted (without unloading the driver) then the Target is left | |
1890 | * (aux) powered and running. On a subsequent driver load, the Target | |
1891 | * is in an unexpected state. We try to catch that here in order to | |
1892 | * reset the Target and retry the probe. | |
1893 | */ | |
fc36e3ff MK |
1894 | if (cold_reset) |
1895 | ret = ath10k_pci_cold_reset(ar); | |
1896 | else | |
1897 | ret = ath10k_pci_warm_reset(ar); | |
1898 | ||
5b2589fc MK |
1899 | if (ret) { |
1900 | ath10k_err("failed to reset target: %d\n", ret); | |
98563d5a | 1901 | goto err; |
5b2589fc | 1902 | } |
8c5c5368 | 1903 | |
8cc8df90 | 1904 | if (!test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features)) |
8c5c5368 | 1905 | /* Force AWAKE forever */ |
8c5c5368 | 1906 | ath10k_do_pci_wake(ar); |
8c5c5368 MK |
1907 | |
1908 | ret = ath10k_pci_ce_init(ar); | |
1d2b48d6 MK |
1909 | if (ret) { |
1910 | ath10k_err("failed to initialize CE: %d\n", ret); | |
8c5c5368 | 1911 | goto err_ps; |
1d2b48d6 | 1912 | } |
8c5c5368 | 1913 | |
98563d5a MK |
1914 | ret = ath10k_ce_disable_interrupts(ar); |
1915 | if (ret) { | |
1916 | ath10k_err("failed to disable CE interrupts: %d\n", ret); | |
8c5c5368 | 1917 | goto err_ce; |
98563d5a | 1918 | } |
8c5c5368 | 1919 | |
fc15ca13 | 1920 | ret = ath10k_pci_init_irq(ar); |
8c5c5368 | 1921 | if (ret) { |
fc15ca13 | 1922 | ath10k_err("failed to init irqs: %d\n", ret); |
8c5c5368 MK |
1923 | goto err_ce; |
1924 | } | |
1925 | ||
ab977bd0 MK |
1926 | ret = ath10k_pci_request_early_irq(ar); |
1927 | if (ret) { | |
1928 | ath10k_err("failed to request early irq: %d\n", ret); | |
1929 | goto err_deinit_irq; | |
1930 | } | |
1931 | ||
98563d5a MK |
1932 | ret = ath10k_pci_wait_for_target_init(ar); |
1933 | if (ret) { | |
1934 | ath10k_err("failed to wait for target to init: %d\n", ret); | |
ab977bd0 | 1935 | goto err_free_early_irq; |
98563d5a MK |
1936 | } |
1937 | ||
1938 | ret = ath10k_pci_init_config(ar); | |
1939 | if (ret) { | |
1940 | ath10k_err("failed to setup init config: %d\n", ret); | |
ab977bd0 | 1941 | goto err_free_early_irq; |
98563d5a | 1942 | } |
8c5c5368 MK |
1943 | |
1944 | ret = ath10k_pci_wake_target_cpu(ar); | |
1945 | if (ret) { | |
1d2b48d6 | 1946 | ath10k_err("could not wake up target CPU: %d\n", ret); |
ab977bd0 | 1947 | goto err_free_early_irq; |
8c5c5368 MK |
1948 | } |
1949 | ||
95cbb6a8 KV |
1950 | if (ar_pci->num_msi_intrs > 1) |
1951 | irq_mode = "MSI-X"; | |
1952 | else if (ar_pci->num_msi_intrs == 1) | |
1953 | irq_mode = "MSI"; | |
1954 | else | |
1955 | irq_mode = "legacy"; | |
1956 | ||
650b91fb | 1957 | if (!test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags)) |
78a9cb4c KV |
1958 | ath10k_info("pci irq %s irq_mode %d reset_mode %d\n", |
1959 | irq_mode, ath10k_pci_irq_mode, | |
1960 | ath10k_pci_reset_mode); | |
95cbb6a8 | 1961 | |
8c5c5368 MK |
1962 | return 0; |
1963 | ||
ab977bd0 MK |
1964 | err_free_early_irq: |
1965 | ath10k_pci_free_early_irq(ar); | |
fc15ca13 MK |
1966 | err_deinit_irq: |
1967 | ath10k_pci_deinit_irq(ar); | |
8c5c5368 MK |
1968 | err_ce: |
1969 | ath10k_pci_ce_deinit(ar); | |
fc36e3ff | 1970 | ath10k_pci_warm_reset(ar); |
8c5c5368 | 1971 | err_ps: |
8cc8df90 | 1972 | if (!test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features)) |
8c5c5368 MK |
1973 | ath10k_do_pci_sleep(ar); |
1974 | err: | |
1975 | return ret; | |
1976 | } | |
1977 | ||
fc36e3ff MK |
1978 | static int ath10k_pci_hif_power_up(struct ath10k *ar) |
1979 | { | |
1980 | int ret; | |
1981 | ||
50f87a67 KV |
1982 | ath10k_dbg(ATH10K_DBG_BOOT, "boot hif power up\n"); |
1983 | ||
fc36e3ff MK |
1984 | /* |
1985 | * Hardware CUS232 version 2 has some issues with cold reset and the | |
1986 | * preferred (and safer) way to perform a device reset is through a | |
1987 | * warm reset. | |
1988 | * | |
1989 | * Warm reset doesn't always work though (notably after a firmware | |
1990 | * crash) so fall back to cold reset if necessary. | |
1991 | */ | |
1992 | ret = __ath10k_pci_hif_power_up(ar, false); | |
1993 | if (ret) { | |
35098463 | 1994 | ath10k_warn("failed to power up target using warm reset: %d\n", |
fc36e3ff MK |
1995 | ret); |
1996 | ||
35098463 KV |
1997 | if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) |
1998 | return ret; | |
1999 | ||
2000 | ath10k_warn("trying cold reset\n"); | |
2001 | ||
fc36e3ff MK |
2002 | ret = __ath10k_pci_hif_power_up(ar, true); |
2003 | if (ret) { | |
2004 | ath10k_err("failed to power up target using cold reset too (%d)\n", | |
2005 | ret); | |
2006 | return ret; | |
2007 | } | |
2008 | } | |
2009 | ||
2010 | return 0; | |
2011 | } | |
2012 | ||
8c5c5368 MK |
2013 | static void ath10k_pci_hif_power_down(struct ath10k *ar) |
2014 | { | |
8cc8df90 BM |
2015 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); |
2016 | ||
50f87a67 KV |
2017 | ath10k_dbg(ATH10K_DBG_BOOT, "boot hif power down\n"); |
2018 | ||
ab977bd0 MK |
2019 | ath10k_pci_free_early_irq(ar); |
2020 | ath10k_pci_kill_tasklet(ar); | |
fc15ca13 | 2021 | ath10k_pci_deinit_irq(ar); |
fc36e3ff | 2022 | ath10k_pci_warm_reset(ar); |
8cc8df90 | 2023 | |
8c5c5368 | 2024 | ath10k_pci_ce_deinit(ar); |
8cc8df90 | 2025 | if (!test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features)) |
8c5c5368 MK |
2026 | ath10k_do_pci_sleep(ar); |
2027 | } | |
2028 | ||
8cd13cad MK |
2029 | #ifdef CONFIG_PM |
2030 | ||
2031 | #define ATH10K_PCI_PM_CONTROL 0x44 | |
2032 | ||
2033 | static int ath10k_pci_hif_suspend(struct ath10k *ar) | |
2034 | { | |
2035 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2036 | struct pci_dev *pdev = ar_pci->pdev; | |
2037 | u32 val; | |
2038 | ||
2039 | pci_read_config_dword(pdev, ATH10K_PCI_PM_CONTROL, &val); | |
2040 | ||
2041 | if ((val & 0x000000ff) != 0x3) { | |
2042 | pci_save_state(pdev); | |
2043 | pci_disable_device(pdev); | |
2044 | pci_write_config_dword(pdev, ATH10K_PCI_PM_CONTROL, | |
2045 | (val & 0xffffff00) | 0x03); | |
2046 | } | |
2047 | ||
2048 | return 0; | |
2049 | } | |
2050 | ||
2051 | static int ath10k_pci_hif_resume(struct ath10k *ar) | |
2052 | { | |
2053 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2054 | struct pci_dev *pdev = ar_pci->pdev; | |
2055 | u32 val; | |
2056 | ||
2057 | pci_read_config_dword(pdev, ATH10K_PCI_PM_CONTROL, &val); | |
2058 | ||
2059 | if ((val & 0x000000ff) != 0) { | |
2060 | pci_restore_state(pdev); | |
2061 | pci_write_config_dword(pdev, ATH10K_PCI_PM_CONTROL, | |
2062 | val & 0xffffff00); | |
2063 | /* | |
2064 | * Suspend/Resume resets the PCI configuration space, | |
2065 | * so we have to re-disable the RETRY_TIMEOUT register (0x41) | |
2066 | * to keep PCI Tx retries from interfering with C3 CPU state | |
2067 | */ | |
2068 | pci_read_config_dword(pdev, 0x40, &val); | |
2069 | ||
2070 | if ((val & 0x0000ff00) != 0) | |
2071 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); | |
2072 | } | |
2073 | ||
2074 | return 0; | |
2075 | } | |
2076 | #endif | |
2077 | ||
5e3dd157 | 2078 | static const struct ath10k_hif_ops ath10k_pci_hif_ops = { |
726346fc | 2079 | .tx_sg = ath10k_pci_hif_tx_sg, |
5e3dd157 KV |
2080 | .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg, |
2081 | .start = ath10k_pci_hif_start, | |
2082 | .stop = ath10k_pci_hif_stop, | |
2083 | .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe, | |
2084 | .get_default_pipe = ath10k_pci_hif_get_default_pipe, | |
2085 | .send_complete_check = ath10k_pci_hif_send_complete_check, | |
e799bbff | 2086 | .set_callbacks = ath10k_pci_hif_set_callbacks, |
5e3dd157 | 2087 | .get_free_queue_number = ath10k_pci_hif_get_free_queue_number, |
8c5c5368 MK |
2088 | .power_up = ath10k_pci_hif_power_up, |
2089 | .power_down = ath10k_pci_hif_power_down, | |
8cd13cad MK |
2090 | #ifdef CONFIG_PM |
2091 | .suspend = ath10k_pci_hif_suspend, | |
2092 | .resume = ath10k_pci_hif_resume, | |
2093 | #endif | |
5e3dd157 KV |
2094 | }; |
2095 | ||
2096 | static void ath10k_pci_ce_tasklet(unsigned long ptr) | |
2097 | { | |
87263e5b | 2098 | struct ath10k_pci_pipe *pipe = (struct ath10k_pci_pipe *)ptr; |
5e3dd157 KV |
2099 | struct ath10k_pci *ar_pci = pipe->ar_pci; |
2100 | ||
2101 | ath10k_ce_per_engine_service(ar_pci->ar, pipe->pipe_num); | |
2102 | } | |
2103 | ||
2104 | static void ath10k_msi_err_tasklet(unsigned long data) | |
2105 | { | |
2106 | struct ath10k *ar = (struct ath10k *)data; | |
2107 | ||
2108 | ath10k_pci_fw_interrupt_handler(ar); | |
2109 | } | |
2110 | ||
2111 | /* | |
2112 | * Handler for a per-engine interrupt on a PARTICULAR CE. | |
2113 | * This is used in cases where each CE has a private MSI interrupt. | |
2114 | */ | |
2115 | static irqreturn_t ath10k_pci_per_engine_handler(int irq, void *arg) | |
2116 | { | |
2117 | struct ath10k *ar = arg; | |
2118 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2119 | int ce_id = irq - ar_pci->pdev->irq - MSI_ASSIGN_CE_INITIAL; | |
2120 | ||
e5742672 | 2121 | if (ce_id < 0 || ce_id >= ARRAY_SIZE(ar_pci->pipe_info)) { |
5e3dd157 KV |
2122 | ath10k_warn("unexpected/invalid irq %d ce_id %d\n", irq, ce_id); |
2123 | return IRQ_HANDLED; | |
2124 | } | |
2125 | ||
2126 | /* | |
2127 | * NOTE: We are able to derive ce_id from irq because we | |
2128 | * use a one-to-one mapping for CE's 0..5. | |
2129 | * CE's 6 & 7 do not use interrupts at all. | |
2130 | * | |
2131 | * This mapping must be kept in sync with the mapping | |
2132 | * used by firmware. | |
2133 | */ | |
2134 | tasklet_schedule(&ar_pci->pipe_info[ce_id].intr); | |
2135 | return IRQ_HANDLED; | |
2136 | } | |
2137 | ||
2138 | static irqreturn_t ath10k_pci_msi_fw_handler(int irq, void *arg) | |
2139 | { | |
2140 | struct ath10k *ar = arg; | |
2141 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2142 | ||
2143 | tasklet_schedule(&ar_pci->msi_fw_err); | |
2144 | return IRQ_HANDLED; | |
2145 | } | |
2146 | ||
2147 | /* | |
2148 | * Top-level interrupt handler for all PCI interrupts from a Target. | |
2149 | * When a block of MSI interrupts is allocated, this top-level handler | |
2150 | * is not used; instead, we directly call the correct sub-handler. | |
2151 | */ | |
2152 | static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg) | |
2153 | { | |
2154 | struct ath10k *ar = arg; | |
2155 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2156 | ||
2157 | if (ar_pci->num_msi_intrs == 0) { | |
e539887b MK |
2158 | if (!ath10k_pci_irq_pending(ar)) |
2159 | return IRQ_NONE; | |
2160 | ||
2685218b | 2161 | ath10k_pci_disable_and_clear_legacy_irq(ar); |
5e3dd157 KV |
2162 | } |
2163 | ||
2164 | tasklet_schedule(&ar_pci->intr_tq); | |
2165 | ||
2166 | return IRQ_HANDLED; | |
2167 | } | |
2168 | ||
ab977bd0 MK |
2169 | static void ath10k_pci_early_irq_tasklet(unsigned long data) |
2170 | { | |
2171 | struct ath10k *ar = (struct ath10k *)data; | |
ab977bd0 MK |
2172 | u32 fw_ind; |
2173 | int ret; | |
2174 | ||
2175 | ret = ath10k_pci_wake(ar); | |
2176 | if (ret) { | |
2177 | ath10k_warn("failed to wake target in early irq tasklet: %d\n", | |
2178 | ret); | |
2179 | return; | |
2180 | } | |
2181 | ||
b39712ce | 2182 | fw_ind = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS); |
ab977bd0 | 2183 | if (fw_ind & FW_IND_EVENT_PENDING) { |
b39712ce | 2184 | ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, |
ab977bd0 MK |
2185 | fw_ind & ~FW_IND_EVENT_PENDING); |
2186 | ||
2187 | /* Some structures are unavailable during early boot or at | |
2188 | * driver teardown so just print that the device has crashed. */ | |
2189 | ath10k_warn("device crashed - no diagnostics available\n"); | |
2190 | } | |
2191 | ||
2192 | ath10k_pci_sleep(ar); | |
2193 | ath10k_pci_enable_legacy_irq(ar); | |
2194 | } | |
2195 | ||
5e3dd157 KV |
2196 | static void ath10k_pci_tasklet(unsigned long data) |
2197 | { | |
2198 | struct ath10k *ar = (struct ath10k *)data; | |
2199 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2200 | ||
2201 | ath10k_pci_fw_interrupt_handler(ar); /* FIXME: Handle FW error */ | |
2202 | ath10k_ce_per_engine_service_any(ar); | |
2203 | ||
2685218b MK |
2204 | /* Re-enable legacy irq that was disabled in the irq handler */ |
2205 | if (ar_pci->num_msi_intrs == 0) | |
2206 | ath10k_pci_enable_legacy_irq(ar); | |
5e3dd157 KV |
2207 | } |
2208 | ||
fc15ca13 | 2209 | static int ath10k_pci_request_irq_msix(struct ath10k *ar) |
5e3dd157 KV |
2210 | { |
2211 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
fc15ca13 | 2212 | int ret, i; |
5e3dd157 KV |
2213 | |
2214 | ret = request_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW, | |
2215 | ath10k_pci_msi_fw_handler, | |
2216 | IRQF_SHARED, "ath10k_pci", ar); | |
591ecdb8 | 2217 | if (ret) { |
fc15ca13 | 2218 | ath10k_warn("failed to request MSI-X fw irq %d: %d\n", |
591ecdb8 | 2219 | ar_pci->pdev->irq + MSI_ASSIGN_FW, ret); |
5e3dd157 | 2220 | return ret; |
591ecdb8 | 2221 | } |
5e3dd157 KV |
2222 | |
2223 | for (i = MSI_ASSIGN_CE_INITIAL; i <= MSI_ASSIGN_CE_MAX; i++) { | |
2224 | ret = request_irq(ar_pci->pdev->irq + i, | |
2225 | ath10k_pci_per_engine_handler, | |
2226 | IRQF_SHARED, "ath10k_pci", ar); | |
2227 | if (ret) { | |
fc15ca13 | 2228 | ath10k_warn("failed to request MSI-X ce irq %d: %d\n", |
5e3dd157 KV |
2229 | ar_pci->pdev->irq + i, ret); |
2230 | ||
87b1423b MK |
2231 | for (i--; i >= MSI_ASSIGN_CE_INITIAL; i--) |
2232 | free_irq(ar_pci->pdev->irq + i, ar); | |
5e3dd157 | 2233 | |
87b1423b | 2234 | free_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW, ar); |
5e3dd157 KV |
2235 | return ret; |
2236 | } | |
2237 | } | |
2238 | ||
5e3dd157 KV |
2239 | return 0; |
2240 | } | |
2241 | ||
fc15ca13 | 2242 | static int ath10k_pci_request_irq_msi(struct ath10k *ar) |
5e3dd157 KV |
2243 | { |
2244 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2245 | int ret; | |
2246 | ||
5e3dd157 KV |
2247 | ret = request_irq(ar_pci->pdev->irq, |
2248 | ath10k_pci_interrupt_handler, | |
2249 | IRQF_SHARED, "ath10k_pci", ar); | |
fc15ca13 MK |
2250 | if (ret) { |
2251 | ath10k_warn("failed to request MSI irq %d: %d\n", | |
2252 | ar_pci->pdev->irq, ret); | |
5e3dd157 KV |
2253 | return ret; |
2254 | } | |
2255 | ||
5e3dd157 KV |
2256 | return 0; |
2257 | } | |
2258 | ||
fc15ca13 | 2259 | static int ath10k_pci_request_irq_legacy(struct ath10k *ar) |
5e3dd157 KV |
2260 | { |
2261 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2262 | int ret; | |
2263 | ||
2264 | ret = request_irq(ar_pci->pdev->irq, | |
2265 | ath10k_pci_interrupt_handler, | |
2266 | IRQF_SHARED, "ath10k_pci", ar); | |
f3782744 | 2267 | if (ret) { |
fc15ca13 MK |
2268 | ath10k_warn("failed to request legacy irq %d: %d\n", |
2269 | ar_pci->pdev->irq, ret); | |
5e3dd157 | 2270 | return ret; |
f3782744 | 2271 | } |
5e3dd157 | 2272 | |
5e3dd157 KV |
2273 | return 0; |
2274 | } | |
2275 | ||
fc15ca13 MK |
2276 | static int ath10k_pci_request_irq(struct ath10k *ar) |
2277 | { | |
2278 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
5e3dd157 | 2279 | |
fc15ca13 MK |
2280 | switch (ar_pci->num_msi_intrs) { |
2281 | case 0: | |
2282 | return ath10k_pci_request_irq_legacy(ar); | |
2283 | case 1: | |
2284 | return ath10k_pci_request_irq_msi(ar); | |
2285 | case MSI_NUM_REQUEST: | |
2286 | return ath10k_pci_request_irq_msix(ar); | |
2287 | } | |
5e3dd157 | 2288 | |
fc15ca13 MK |
2289 | ath10k_warn("unknown irq configuration upon request\n"); |
2290 | return -EINVAL; | |
5e3dd157 KV |
2291 | } |
2292 | ||
fc15ca13 MK |
2293 | static void ath10k_pci_free_irq(struct ath10k *ar) |
2294 | { | |
2295 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
2296 | int i; | |
2297 | ||
2298 | /* There's at least one interrupt irregardless whether its legacy INTR | |
2299 | * or MSI or MSI-X */ | |
2300 | for (i = 0; i < max(1, ar_pci->num_msi_intrs); i++) | |
2301 | free_irq(ar_pci->pdev->irq + i, ar); | |
2302 | } | |
2303 | ||
2304 | static void ath10k_pci_init_irq_tasklets(struct ath10k *ar) | |
5e3dd157 KV |
2305 | { |
2306 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
5e3dd157 KV |
2307 | int i; |
2308 | ||
fc15ca13 | 2309 | tasklet_init(&ar_pci->intr_tq, ath10k_pci_tasklet, (unsigned long)ar); |
5e3dd157 | 2310 | tasklet_init(&ar_pci->msi_fw_err, ath10k_msi_err_tasklet, |
fc15ca13 | 2311 | (unsigned long)ar); |
ab977bd0 MK |
2312 | tasklet_init(&ar_pci->early_irq_tasklet, ath10k_pci_early_irq_tasklet, |
2313 | (unsigned long)ar); | |
5e3dd157 KV |
2314 | |
2315 | for (i = 0; i < CE_COUNT; i++) { | |
2316 | ar_pci->pipe_info[i].ar_pci = ar_pci; | |
fc15ca13 | 2317 | tasklet_init(&ar_pci->pipe_info[i].intr, ath10k_pci_ce_tasklet, |
5e3dd157 KV |
2318 | (unsigned long)&ar_pci->pipe_info[i]); |
2319 | } | |
fc15ca13 MK |
2320 | } |
2321 | ||
2322 | static int ath10k_pci_init_irq(struct ath10k *ar) | |
2323 | { | |
2324 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
cfe9c45b MK |
2325 | bool msix_supported = test_bit(ATH10K_PCI_FEATURE_MSI_X, |
2326 | ar_pci->features); | |
fc15ca13 | 2327 | int ret; |
5e3dd157 | 2328 | |
fc15ca13 | 2329 | ath10k_pci_init_irq_tasklets(ar); |
5e3dd157 | 2330 | |
cfe9c45b MK |
2331 | if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO && |
2332 | !test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags)) | |
2333 | ath10k_info("limiting irq mode to: %d\n", ath10k_pci_irq_mode); | |
5e3dd157 | 2334 | |
fc15ca13 | 2335 | /* Try MSI-X */ |
cfe9c45b MK |
2336 | if (ath10k_pci_irq_mode == ATH10K_PCI_IRQ_AUTO && msix_supported) { |
2337 | ar_pci->num_msi_intrs = MSI_NUM_REQUEST; | |
5ad6867c AG |
2338 | ret = pci_enable_msi_range(ar_pci->pdev, ar_pci->num_msi_intrs, |
2339 | ar_pci->num_msi_intrs); | |
2340 | if (ret > 0) | |
cfe9c45b | 2341 | return 0; |
5e3dd157 | 2342 | |
cfe9c45b | 2343 | /* fall-through */ |
5e3dd157 KV |
2344 | } |
2345 | ||
fc15ca13 | 2346 | /* Try MSI */ |
cfe9c45b MK |
2347 | if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) { |
2348 | ar_pci->num_msi_intrs = 1; | |
2349 | ret = pci_enable_msi(ar_pci->pdev); | |
5e3dd157 | 2350 | if (ret == 0) |
cfe9c45b | 2351 | return 0; |
5e3dd157 | 2352 | |
cfe9c45b | 2353 | /* fall-through */ |
5e3dd157 KV |
2354 | } |
2355 | ||
fc15ca13 MK |
2356 | /* Try legacy irq |
2357 | * | |
2358 | * A potential race occurs here: The CORE_BASE write | |
2359 | * depends on target correctly decoding AXI address but | |
2360 | * host won't know when target writes BAR to CORE_CTRL. | |
2361 | * This write might get lost if target has NOT written BAR. | |
2362 | * For now, fix the race by repeating the write in below | |
2363 | * synchronization checking. */ | |
2364 | ar_pci->num_msi_intrs = 0; | |
5e3dd157 | 2365 | |
fc15ca13 MK |
2366 | ret = ath10k_pci_wake(ar); |
2367 | if (ret) { | |
2368 | ath10k_warn("failed to wake target: %d\n", ret); | |
2369 | return ret; | |
5e3dd157 KV |
2370 | } |
2371 | ||
fc15ca13 MK |
2372 | ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS, |
2373 | PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); | |
2374 | ath10k_pci_sleep(ar); | |
2375 | ||
2376 | return 0; | |
5e3dd157 KV |
2377 | } |
2378 | ||
fc15ca13 | 2379 | static int ath10k_pci_deinit_irq_legacy(struct ath10k *ar) |
5e3dd157 | 2380 | { |
fc15ca13 | 2381 | int ret; |
5e3dd157 | 2382 | |
fc15ca13 | 2383 | ret = ath10k_pci_wake(ar); |
f3782744 | 2384 | if (ret) { |
fc15ca13 | 2385 | ath10k_warn("failed to wake target: %d\n", ret); |
f3782744 KV |
2386 | return ret; |
2387 | } | |
5e3dd157 | 2388 | |
fc15ca13 MK |
2389 | ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS, |
2390 | 0); | |
2391 | ath10k_pci_sleep(ar); | |
2392 | ||
2393 | return 0; | |
5e3dd157 KV |
2394 | } |
2395 | ||
fc15ca13 | 2396 | static int ath10k_pci_deinit_irq(struct ath10k *ar) |
5e3dd157 KV |
2397 | { |
2398 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
5e3dd157 | 2399 | |
fc15ca13 MK |
2400 | switch (ar_pci->num_msi_intrs) { |
2401 | case 0: | |
2402 | return ath10k_pci_deinit_irq_legacy(ar); | |
2403 | case 1: | |
2404 | /* fall-through */ | |
2405 | case MSI_NUM_REQUEST: | |
5e3dd157 | 2406 | pci_disable_msi(ar_pci->pdev); |
fc15ca13 | 2407 | return 0; |
bb8b621a AG |
2408 | default: |
2409 | pci_disable_msi(ar_pci->pdev); | |
fc15ca13 MK |
2410 | } |
2411 | ||
2412 | ath10k_warn("unknown irq configuration upon deinit\n"); | |
2413 | return -EINVAL; | |
5e3dd157 KV |
2414 | } |
2415 | ||
d7fb47f5 | 2416 | static int ath10k_pci_wait_for_target_init(struct ath10k *ar) |
5e3dd157 KV |
2417 | { |
2418 | struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); | |
0399eca8 | 2419 | unsigned long timeout; |
f3782744 | 2420 | int ret; |
0399eca8 | 2421 | u32 val; |
5e3dd157 | 2422 | |
50f87a67 KV |
2423 | ath10k_dbg(ATH10K_DBG_BOOT, "boot waiting target to initialise\n"); |
2424 | ||
98563d5a | 2425 | ret = ath10k_pci_wake(ar); |
f3782744 | 2426 | if (ret) { |
0399eca8 | 2427 | ath10k_err("failed to wake up target for init: %d\n", ret); |
f3782744 KV |
2428 | return ret; |
2429 | } | |
5e3dd157 | 2430 | |
0399eca8 KV |
2431 | timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT); |
2432 | ||
2433 | do { | |
2434 | val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS); | |
2435 | ||
50f87a67 KV |
2436 | ath10k_dbg(ATH10K_DBG_BOOT, "boot target indicator %x\n", val); |
2437 | ||
0399eca8 KV |
2438 | /* target should never return this */ |
2439 | if (val == 0xffffffff) | |
2440 | continue; | |
2441 | ||
2442 | if (val & FW_IND_INITIALIZED) | |
2443 | break; | |
2444 | ||
5e3dd157 KV |
2445 | if (ar_pci->num_msi_intrs == 0) |
2446 | /* Fix potential race by repeating CORE_BASE writes */ | |
0399eca8 KV |
2447 | ath10k_pci_soc_write32(ar, PCIE_INTR_ENABLE_ADDRESS, |
2448 | PCIE_INTR_FIRMWARE_MASK | | |
2449 | PCIE_INTR_CE_MASK_ALL); | |
2450 | ||
5e3dd157 | 2451 | mdelay(10); |
0399eca8 | 2452 | } while (time_before(jiffies, timeout)); |
5e3dd157 | 2453 | |
0399eca8 KV |
2454 | if (val == 0xffffffff || !(val & FW_IND_INITIALIZED)) { |
2455 | ath10k_err("failed to receive initialized event from target: %08x\n", | |
2456 | val); | |
2457 | ret = -ETIMEDOUT; | |
5b2589fc | 2458 | goto out; |
5e3dd157 KV |
2459 | } |
2460 | ||
50f87a67 KV |
2461 | ath10k_dbg(ATH10K_DBG_BOOT, "boot target initialised\n"); |
2462 | ||
5b2589fc | 2463 | out: |
98563d5a | 2464 | ath10k_pci_sleep(ar); |
5b2589fc | 2465 | return ret; |
5e3dd157 KV |
2466 | } |
2467 | ||
fc36e3ff | 2468 | static int ath10k_pci_cold_reset(struct ath10k *ar) |
5e3dd157 | 2469 | { |
5b2589fc | 2470 | int i, ret; |
5e3dd157 KV |
2471 | u32 val; |
2472 | ||
50f87a67 KV |
2473 | ath10k_dbg(ATH10K_DBG_BOOT, "boot cold reset\n"); |
2474 | ||
5b2589fc MK |
2475 | ret = ath10k_do_pci_wake(ar); |
2476 | if (ret) { | |
2477 | ath10k_err("failed to wake up target: %d\n", | |
2478 | ret); | |
2479 | return ret; | |
5e3dd157 KV |
2480 | } |
2481 | ||
2482 | /* Put Target, including PCIe, into RESET. */ | |
e479ed43 | 2483 | val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS); |
5e3dd157 | 2484 | val |= 1; |
e479ed43 | 2485 | ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val); |
5e3dd157 KV |
2486 | |
2487 | for (i = 0; i < ATH_PCI_RESET_WAIT_MAX; i++) { | |
e479ed43 | 2488 | if (ath10k_pci_reg_read32(ar, RTC_STATE_ADDRESS) & |
5e3dd157 KV |
2489 | RTC_STATE_COLD_RESET_MASK) |
2490 | break; | |
2491 | msleep(1); | |
2492 | } | |
2493 | ||
2494 | /* Pull Target, including PCIe, out of RESET. */ | |
2495 | val &= ~1; | |
e479ed43 | 2496 | ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val); |
5e3dd157 KV |
2497 | |
2498 | for (i = 0; i < ATH_PCI_RESET_WAIT_MAX; i++) { | |
e479ed43 | 2499 | if (!(ath10k_pci_reg_read32(ar, RTC_STATE_ADDRESS) & |
5e3dd157 KV |
2500 | RTC_STATE_COLD_RESET_MASK)) |
2501 | break; | |
2502 | msleep(1); | |
2503 | } | |
2504 | ||
5b2589fc | 2505 | ath10k_do_pci_sleep(ar); |
50f87a67 KV |
2506 | |
2507 | ath10k_dbg(ATH10K_DBG_BOOT, "boot cold reset complete\n"); | |
2508 | ||
5b2589fc | 2509 | return 0; |
5e3dd157 KV |
2510 | } |
2511 | ||
2512 | static void ath10k_pci_dump_features(struct ath10k_pci *ar_pci) | |
2513 | { | |
2514 | int i; | |
2515 | ||
2516 | for (i = 0; i < ATH10K_PCI_FEATURE_COUNT; i++) { | |
2517 | if (!test_bit(i, ar_pci->features)) | |
2518 | continue; | |
2519 | ||
2520 | switch (i) { | |
2521 | case ATH10K_PCI_FEATURE_MSI_X: | |
24cfade1 | 2522 | ath10k_dbg(ATH10K_DBG_BOOT, "device supports MSI-X\n"); |
5e3dd157 | 2523 | break; |
8cc8df90 | 2524 | case ATH10K_PCI_FEATURE_SOC_POWER_SAVE: |
24cfade1 | 2525 | ath10k_dbg(ATH10K_DBG_BOOT, "QCA98XX SoC power save enabled\n"); |
8cc8df90 | 2526 | break; |
5e3dd157 KV |
2527 | } |
2528 | } | |
2529 | } | |
2530 | ||
2531 | static int ath10k_pci_probe(struct pci_dev *pdev, | |
2532 | const struct pci_device_id *pci_dev) | |
2533 | { | |
2534 | void __iomem *mem; | |
2535 | int ret = 0; | |
2536 | struct ath10k *ar; | |
2537 | struct ath10k_pci *ar_pci; | |
e01ae68c | 2538 | u32 lcr_val, chip_id; |
5e3dd157 | 2539 | |
50f87a67 | 2540 | ath10k_dbg(ATH10K_DBG_PCI, "pci probe\n"); |
5e3dd157 KV |
2541 | |
2542 | ar_pci = kzalloc(sizeof(*ar_pci), GFP_KERNEL); | |
2543 | if (ar_pci == NULL) | |
2544 | return -ENOMEM; | |
2545 | ||
2546 | ar_pci->pdev = pdev; | |
2547 | ar_pci->dev = &pdev->dev; | |
2548 | ||
2549 | switch (pci_dev->device) { | |
5e3dd157 KV |
2550 | case QCA988X_2_0_DEVICE_ID: |
2551 | set_bit(ATH10K_PCI_FEATURE_MSI_X, ar_pci->features); | |
2552 | break; | |
2553 | default: | |
2554 | ret = -ENODEV; | |
6d3be300 | 2555 | ath10k_err("Unknown device ID: %d\n", pci_dev->device); |
5e3dd157 KV |
2556 | goto err_ar_pci; |
2557 | } | |
2558 | ||
e42c1fbd | 2559 | if (ath10k_pci_target_ps) |
8cc8df90 BM |
2560 | set_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features); |
2561 | ||
5e3dd157 KV |
2562 | ath10k_pci_dump_features(ar_pci); |
2563 | ||
3a0861ff | 2564 | ar = ath10k_core_create(ar_pci, ar_pci->dev, &ath10k_pci_hif_ops); |
5e3dd157 | 2565 | if (!ar) { |
1d2b48d6 | 2566 | ath10k_err("failed to create driver core\n"); |
5e3dd157 KV |
2567 | ret = -EINVAL; |
2568 | goto err_ar_pci; | |
2569 | } | |
2570 | ||
5e3dd157 | 2571 | ar_pci->ar = ar; |
5e3dd157 KV |
2572 | atomic_set(&ar_pci->keep_awake_count, 0); |
2573 | ||
2574 | pci_set_drvdata(pdev, ar); | |
2575 | ||
2576 | /* | |
2577 | * Without any knowledge of the Host, the Target may have been reset or | |
2578 | * power cycled and its Config Space may no longer reflect the PCI | |
2579 | * address space that was assigned earlier by the PCI infrastructure. | |
2580 | * Refresh it now. | |
2581 | */ | |
2582 | ret = pci_assign_resource(pdev, BAR_NUM); | |
2583 | if (ret) { | |
1d2b48d6 | 2584 | ath10k_err("failed to assign PCI space: %d\n", ret); |
5e3dd157 KV |
2585 | goto err_ar; |
2586 | } | |
2587 | ||
2588 | ret = pci_enable_device(pdev); | |
2589 | if (ret) { | |
1d2b48d6 | 2590 | ath10k_err("failed to enable PCI device: %d\n", ret); |
5e3dd157 KV |
2591 | goto err_ar; |
2592 | } | |
2593 | ||
2594 | /* Request MMIO resources */ | |
2595 | ret = pci_request_region(pdev, BAR_NUM, "ath"); | |
2596 | if (ret) { | |
1d2b48d6 | 2597 | ath10k_err("failed to request MMIO region: %d\n", ret); |
5e3dd157 KV |
2598 | goto err_device; |
2599 | } | |
2600 | ||
2601 | /* | |
2602 | * Target structures have a limit of 32 bit DMA pointers. | |
2603 | * DMA pointers can be wider than 32 bits by default on some systems. | |
2604 | */ | |
2605 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
2606 | if (ret) { | |
1d2b48d6 | 2607 | ath10k_err("failed to set DMA mask to 32-bit: %d\n", ret); |
5e3dd157 KV |
2608 | goto err_region; |
2609 | } | |
2610 | ||
2611 | ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
2612 | if (ret) { | |
1d2b48d6 | 2613 | ath10k_err("failed to set consistent DMA mask to 32-bit\n"); |
5e3dd157 KV |
2614 | goto err_region; |
2615 | } | |
2616 | ||
2617 | /* Set bus master bit in PCI_COMMAND to enable DMA */ | |
2618 | pci_set_master(pdev); | |
2619 | ||
2620 | /* | |
2621 | * Temporary FIX: disable ASPM | |
2622 | * Will be removed after the OTP is programmed | |
2623 | */ | |
2624 | pci_read_config_dword(pdev, 0x80, &lcr_val); | |
2625 | pci_write_config_dword(pdev, 0x80, (lcr_val & 0xffffff00)); | |
2626 | ||
2627 | /* Arrange for access to Target SoC registers. */ | |
2628 | mem = pci_iomap(pdev, BAR_NUM, 0); | |
2629 | if (!mem) { | |
1d2b48d6 | 2630 | ath10k_err("failed to perform IOMAP for BAR%d\n", BAR_NUM); |
5e3dd157 KV |
2631 | ret = -EIO; |
2632 | goto err_master; | |
2633 | } | |
2634 | ||
2635 | ar_pci->mem = mem; | |
2636 | ||
2637 | spin_lock_init(&ar_pci->ce_lock); | |
2638 | ||
e01ae68c KV |
2639 | ret = ath10k_do_pci_wake(ar); |
2640 | if (ret) { | |
2641 | ath10k_err("Failed to get chip id: %d\n", ret); | |
12eb0879 | 2642 | goto err_iomap; |
e01ae68c KV |
2643 | } |
2644 | ||
233eb97f | 2645 | chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS); |
e01ae68c KV |
2646 | |
2647 | ath10k_do_pci_sleep(ar); | |
2648 | ||
24cfade1 KV |
2649 | ath10k_dbg(ATH10K_DBG_BOOT, "boot pci_mem 0x%p\n", ar_pci->mem); |
2650 | ||
e01ae68c | 2651 | ret = ath10k_core_register(ar, chip_id); |
5e3dd157 | 2652 | if (ret) { |
1d2b48d6 | 2653 | ath10k_err("failed to register driver core: %d\n", ret); |
32270b61 | 2654 | goto err_iomap; |
5e3dd157 KV |
2655 | } |
2656 | ||
2657 | return 0; | |
2658 | ||
5e3dd157 KV |
2659 | err_iomap: |
2660 | pci_iounmap(pdev, mem); | |
2661 | err_master: | |
2662 | pci_clear_master(pdev); | |
2663 | err_region: | |
2664 | pci_release_region(pdev, BAR_NUM); | |
2665 | err_device: | |
2666 | pci_disable_device(pdev); | |
2667 | err_ar: | |
5e3dd157 KV |
2668 | ath10k_core_destroy(ar); |
2669 | err_ar_pci: | |
2670 | /* call HIF PCI free here */ | |
2671 | kfree(ar_pci); | |
2672 | ||
2673 | return ret; | |
2674 | } | |
2675 | ||
2676 | static void ath10k_pci_remove(struct pci_dev *pdev) | |
2677 | { | |
2678 | struct ath10k *ar = pci_get_drvdata(pdev); | |
2679 | struct ath10k_pci *ar_pci; | |
2680 | ||
50f87a67 | 2681 | ath10k_dbg(ATH10K_DBG_PCI, "pci remove\n"); |
5e3dd157 KV |
2682 | |
2683 | if (!ar) | |
2684 | return; | |
2685 | ||
2686 | ar_pci = ath10k_pci_priv(ar); | |
2687 | ||
2688 | if (!ar_pci) | |
2689 | return; | |
2690 | ||
2691 | tasklet_kill(&ar_pci->msi_fw_err); | |
2692 | ||
2693 | ath10k_core_unregister(ar); | |
5e3dd157 | 2694 | |
5e3dd157 KV |
2695 | pci_iounmap(pdev, ar_pci->mem); |
2696 | pci_release_region(pdev, BAR_NUM); | |
2697 | pci_clear_master(pdev); | |
2698 | pci_disable_device(pdev); | |
2699 | ||
2700 | ath10k_core_destroy(ar); | |
2701 | kfree(ar_pci); | |
2702 | } | |
2703 | ||
5e3dd157 KV |
2704 | MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table); |
2705 | ||
2706 | static struct pci_driver ath10k_pci_driver = { | |
2707 | .name = "ath10k_pci", | |
2708 | .id_table = ath10k_pci_id_table, | |
2709 | .probe = ath10k_pci_probe, | |
2710 | .remove = ath10k_pci_remove, | |
5e3dd157 KV |
2711 | }; |
2712 | ||
2713 | static int __init ath10k_pci_init(void) | |
2714 | { | |
2715 | int ret; | |
2716 | ||
2717 | ret = pci_register_driver(&ath10k_pci_driver); | |
2718 | if (ret) | |
1d2b48d6 | 2719 | ath10k_err("failed to register PCI driver: %d\n", ret); |
5e3dd157 KV |
2720 | |
2721 | return ret; | |
2722 | } | |
2723 | module_init(ath10k_pci_init); | |
2724 | ||
2725 | static void __exit ath10k_pci_exit(void) | |
2726 | { | |
2727 | pci_unregister_driver(&ath10k_pci_driver); | |
2728 | } | |
2729 | ||
2730 | module_exit(ath10k_pci_exit); | |
2731 | ||
2732 | MODULE_AUTHOR("Qualcomm Atheros"); | |
2733 | MODULE_DESCRIPTION("Driver support for Atheros QCA988X PCIe devices"); | |
2734 | MODULE_LICENSE("Dual BSD/GPL"); | |
929417cf | 2735 | MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_FW_2_FILE); |
5e3dd157 | 2736 | MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_BOARD_DATA_FILE); |