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Merge tag 'iwlwifi-for-kalle-2016-05-04' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-zesty-kernel.git] / drivers / net / wireless / intel / iwlwifi / mvm / fw-dbg.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program;
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <linuxwifi@intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
34 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
35 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/devcoredump.h>
66
67 #include "fw-dbg.h"
68 #include "iwl-io.h"
69 #include "mvm.h"
70 #include "iwl-prph.h"
71 #include "iwl-csr.h"
72
73 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
74 const void *data, size_t datalen)
75 {
76 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
77 ssize_t bytes_read;
78 ssize_t bytes_read_trans;
79
80 if (offset < dump_ptrs->op_mode_len) {
81 bytes_read = min_t(ssize_t, count,
82 dump_ptrs->op_mode_len - offset);
83 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
84 bytes_read);
85 offset += bytes_read;
86 count -= bytes_read;
87
88 if (count == 0)
89 return bytes_read;
90 } else {
91 bytes_read = 0;
92 }
93
94 if (!dump_ptrs->trans_ptr)
95 return bytes_read;
96
97 offset -= dump_ptrs->op_mode_len;
98 bytes_read_trans = min_t(ssize_t, count,
99 dump_ptrs->trans_ptr->len - offset);
100 memcpy(buffer + bytes_read,
101 (u8 *)dump_ptrs->trans_ptr->data + offset,
102 bytes_read_trans);
103
104 return bytes_read + bytes_read_trans;
105 }
106
107 static void iwl_mvm_free_coredump(const void *data)
108 {
109 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
110
111 vfree(fw_error_dump->op_mode_ptr);
112 vfree(fw_error_dump->trans_ptr);
113 kfree(fw_error_dump);
114 }
115
116 #define RADIO_REG_MAX_READ 0x2ad
117 static void iwl_mvm_read_radio_reg(struct iwl_mvm *mvm,
118 struct iwl_fw_error_dump_data **dump_data)
119 {
120 u8 *pos = (void *)(*dump_data)->data;
121 unsigned long flags;
122 int i;
123
124 if (!iwl_trans_grab_nic_access(mvm->trans, &flags))
125 return;
126
127 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RADIO_REG);
128 (*dump_data)->len = cpu_to_le32(RADIO_REG_MAX_READ);
129
130 for (i = 0; i < RADIO_REG_MAX_READ; i++) {
131 u32 rd_cmd = RADIO_RSP_RD_CMD;
132
133 rd_cmd |= i << RADIO_RSP_ADDR_POS;
134 iwl_write_prph_no_grab(mvm->trans, RSP_RADIO_CMD, rd_cmd);
135 *pos = (u8)iwl_read_prph_no_grab(mvm->trans, RSP_RADIO_RDDAT);
136
137 pos++;
138 }
139
140 *dump_data = iwl_fw_error_next_data(*dump_data);
141
142 iwl_trans_release_nic_access(mvm->trans, &flags);
143 }
144
145 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
146 struct iwl_fw_error_dump_data **dump_data)
147 {
148 struct iwl_fw_error_dump_fifo *fifo_hdr;
149 u32 *fifo_data;
150 u32 fifo_len;
151 unsigned long flags;
152 int i, j;
153
154 if (!iwl_trans_grab_nic_access(mvm->trans, &flags))
155 return;
156
157 /* Pull RXF data from all RXFs */
158 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
159 /*
160 * Keep aside the additional offset that might be needed for
161 * next RXF
162 */
163 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
164
165 fifo_hdr = (void *)(*dump_data)->data;
166 fifo_data = (void *)fifo_hdr->data;
167 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
168
169 /* No need to try to read the data if the length is 0 */
170 if (fifo_len == 0)
171 continue;
172
173 /* Add a TLV for the RXF */
174 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
175 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
176
177 fifo_hdr->fifo_num = cpu_to_le32(i);
178 fifo_hdr->available_bytes =
179 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
180 RXF_RD_D_SPACE +
181 offset_diff));
182 fifo_hdr->wr_ptr =
183 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
184 RXF_RD_WR_PTR +
185 offset_diff));
186 fifo_hdr->rd_ptr =
187 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
188 RXF_RD_RD_PTR +
189 offset_diff));
190 fifo_hdr->fence_ptr =
191 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
192 RXF_RD_FENCE_PTR +
193 offset_diff));
194 fifo_hdr->fence_mode =
195 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
196 RXF_SET_FENCE_MODE +
197 offset_diff));
198
199 /* Lock fence */
200 iwl_trans_write_prph(mvm->trans,
201 RXF_SET_FENCE_MODE + offset_diff, 0x1);
202 /* Set fence pointer to the same place like WR pointer */
203 iwl_trans_write_prph(mvm->trans,
204 RXF_LD_WR2FENCE + offset_diff, 0x1);
205 /* Set fence offset */
206 iwl_trans_write_prph(mvm->trans,
207 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
208 0x0);
209
210 /* Read FIFO */
211 fifo_len /= sizeof(u32); /* Size in DWORDS */
212 for (j = 0; j < fifo_len; j++)
213 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
214 RXF_FIFO_RD_FENCE_INC +
215 offset_diff);
216 *dump_data = iwl_fw_error_next_data(*dump_data);
217 }
218
219 /* Pull TXF data from all TXFs */
220 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
221 /* Mark the number of TXF we're pulling now */
222 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
223
224 fifo_hdr = (void *)(*dump_data)->data;
225 fifo_data = (void *)fifo_hdr->data;
226 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
227
228 /* No need to try to read the data if the length is 0 */
229 if (fifo_len == 0)
230 continue;
231
232 /* Add a TLV for the FIFO */
233 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
234 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
235
236 fifo_hdr->fifo_num = cpu_to_le32(i);
237 fifo_hdr->available_bytes =
238 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
239 TXF_FIFO_ITEM_CNT));
240 fifo_hdr->wr_ptr =
241 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
242 TXF_WR_PTR));
243 fifo_hdr->rd_ptr =
244 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
245 TXF_RD_PTR));
246 fifo_hdr->fence_ptr =
247 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
248 TXF_FENCE_PTR));
249 fifo_hdr->fence_mode =
250 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
251 TXF_LOCK_FENCE));
252
253 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
254 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
255 TXF_WR_PTR);
256
257 /* Dummy-read to advance the read pointer to the head */
258 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
259
260 /* Read FIFO */
261 fifo_len /= sizeof(u32); /* Size in DWORDS */
262 for (j = 0; j < fifo_len; j++)
263 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
264 TXF_READ_MODIFY_DATA);
265 *dump_data = iwl_fw_error_next_data(*dump_data);
266 }
267
268 if (fw_has_capa(&mvm->fw->ucode_capa,
269 IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG)) {
270 /* Pull UMAC internal TXF data from all TXFs */
271 for (i = 0;
272 i < ARRAY_SIZE(mvm->shared_mem_cfg.internal_txfifo_size);
273 i++) {
274 /* Mark the number of TXF we're pulling now */
275 iwl_trans_write_prph(mvm->trans, TXF_CPU2_NUM, i);
276
277 fifo_hdr = (void *)(*dump_data)->data;
278 fifo_data = (void *)fifo_hdr->data;
279 fifo_len = mvm->shared_mem_cfg.internal_txfifo_size[i];
280
281 /* No need to try to read the data if the length is 0 */
282 if (fifo_len == 0)
283 continue;
284
285 /* Add a TLV for the internal FIFOs */
286 (*dump_data)->type =
287 cpu_to_le32(IWL_FW_ERROR_DUMP_INTERNAL_TXF);
288 (*dump_data)->len =
289 cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
290
291 fifo_hdr->fifo_num = cpu_to_le32(i);
292 fifo_hdr->available_bytes =
293 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
294 TXF_CPU2_FIFO_ITEM_CNT));
295 fifo_hdr->wr_ptr =
296 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
297 TXF_CPU2_WR_PTR));
298 fifo_hdr->rd_ptr =
299 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
300 TXF_CPU2_RD_PTR));
301 fifo_hdr->fence_ptr =
302 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
303 TXF_CPU2_FENCE_PTR));
304 fifo_hdr->fence_mode =
305 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
306 TXF_CPU2_LOCK_FENCE));
307
308 /* Set TXF_CPU2_READ_MODIFY_ADDR to TXF_CPU2_WR_PTR */
309 iwl_trans_write_prph(mvm->trans,
310 TXF_CPU2_READ_MODIFY_ADDR,
311 TXF_CPU2_WR_PTR);
312
313 /* Dummy-read to advance the read pointer to head */
314 iwl_trans_read_prph(mvm->trans,
315 TXF_CPU2_READ_MODIFY_DATA);
316
317 /* Read FIFO */
318 fifo_len /= sizeof(u32); /* Size in DWORDS */
319 for (j = 0; j < fifo_len; j++)
320 fifo_data[j] =
321 iwl_trans_read_prph(mvm->trans,
322 TXF_CPU2_READ_MODIFY_DATA);
323 *dump_data = iwl_fw_error_next_data(*dump_data);
324 }
325 }
326
327 iwl_trans_release_nic_access(mvm->trans, &flags);
328 }
329
330 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
331 {
332 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert)
333 return;
334
335 kfree(mvm->fw_dump_desc);
336 mvm->fw_dump_desc = NULL;
337 }
338
339 #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
340 #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
341
342 static const struct {
343 u32 start, end;
344 } iwl_prph_dump_addr[] = {
345 { .start = 0x00a00000, .end = 0x00a00000 },
346 { .start = 0x00a0000c, .end = 0x00a00024 },
347 { .start = 0x00a0002c, .end = 0x00a0003c },
348 { .start = 0x00a00410, .end = 0x00a00418 },
349 { .start = 0x00a00420, .end = 0x00a00420 },
350 { .start = 0x00a00428, .end = 0x00a00428 },
351 { .start = 0x00a00430, .end = 0x00a0043c },
352 { .start = 0x00a00444, .end = 0x00a00444 },
353 { .start = 0x00a004c0, .end = 0x00a004cc },
354 { .start = 0x00a004d8, .end = 0x00a004d8 },
355 { .start = 0x00a004e0, .end = 0x00a004f0 },
356 { .start = 0x00a00840, .end = 0x00a00840 },
357 { .start = 0x00a00850, .end = 0x00a00858 },
358 { .start = 0x00a01004, .end = 0x00a01008 },
359 { .start = 0x00a01010, .end = 0x00a01010 },
360 { .start = 0x00a01018, .end = 0x00a01018 },
361 { .start = 0x00a01024, .end = 0x00a01024 },
362 { .start = 0x00a0102c, .end = 0x00a01034 },
363 { .start = 0x00a0103c, .end = 0x00a01040 },
364 { .start = 0x00a01048, .end = 0x00a01094 },
365 { .start = 0x00a01c00, .end = 0x00a01c20 },
366 { .start = 0x00a01c58, .end = 0x00a01c58 },
367 { .start = 0x00a01c7c, .end = 0x00a01c7c },
368 { .start = 0x00a01c28, .end = 0x00a01c54 },
369 { .start = 0x00a01c5c, .end = 0x00a01c5c },
370 { .start = 0x00a01c60, .end = 0x00a01cdc },
371 { .start = 0x00a01ce0, .end = 0x00a01d0c },
372 { .start = 0x00a01d18, .end = 0x00a01d20 },
373 { .start = 0x00a01d2c, .end = 0x00a01d30 },
374 { .start = 0x00a01d40, .end = 0x00a01d5c },
375 { .start = 0x00a01d80, .end = 0x00a01d80 },
376 { .start = 0x00a01d98, .end = 0x00a01d9c },
377 { .start = 0x00a01da8, .end = 0x00a01da8 },
378 { .start = 0x00a01db8, .end = 0x00a01df4 },
379 { .start = 0x00a01dc0, .end = 0x00a01dfc },
380 { .start = 0x00a01e00, .end = 0x00a01e2c },
381 { .start = 0x00a01e40, .end = 0x00a01e60 },
382 { .start = 0x00a01e68, .end = 0x00a01e6c },
383 { .start = 0x00a01e74, .end = 0x00a01e74 },
384 { .start = 0x00a01e84, .end = 0x00a01e90 },
385 { .start = 0x00a01e9c, .end = 0x00a01ec4 },
386 { .start = 0x00a01ed0, .end = 0x00a01ee0 },
387 { .start = 0x00a01f00, .end = 0x00a01f1c },
388 { .start = 0x00a01f44, .end = 0x00a01ffc },
389 { .start = 0x00a02000, .end = 0x00a02048 },
390 { .start = 0x00a02068, .end = 0x00a020f0 },
391 { .start = 0x00a02100, .end = 0x00a02118 },
392 { .start = 0x00a02140, .end = 0x00a0214c },
393 { .start = 0x00a02168, .end = 0x00a0218c },
394 { .start = 0x00a021c0, .end = 0x00a021c0 },
395 { .start = 0x00a02400, .end = 0x00a02410 },
396 { .start = 0x00a02418, .end = 0x00a02420 },
397 { .start = 0x00a02428, .end = 0x00a0242c },
398 { .start = 0x00a02434, .end = 0x00a02434 },
399 { .start = 0x00a02440, .end = 0x00a02460 },
400 { .start = 0x00a02468, .end = 0x00a024b0 },
401 { .start = 0x00a024c8, .end = 0x00a024cc },
402 { .start = 0x00a02500, .end = 0x00a02504 },
403 { .start = 0x00a0250c, .end = 0x00a02510 },
404 { .start = 0x00a02540, .end = 0x00a02554 },
405 { .start = 0x00a02580, .end = 0x00a025f4 },
406 { .start = 0x00a02600, .end = 0x00a0260c },
407 { .start = 0x00a02648, .end = 0x00a02650 },
408 { .start = 0x00a02680, .end = 0x00a02680 },
409 { .start = 0x00a026c0, .end = 0x00a026d0 },
410 { .start = 0x00a02700, .end = 0x00a0270c },
411 { .start = 0x00a02804, .end = 0x00a02804 },
412 { .start = 0x00a02818, .end = 0x00a0281c },
413 { .start = 0x00a02c00, .end = 0x00a02db4 },
414 { .start = 0x00a02df4, .end = 0x00a02fb0 },
415 { .start = 0x00a03000, .end = 0x00a03014 },
416 { .start = 0x00a0301c, .end = 0x00a0302c },
417 { .start = 0x00a03034, .end = 0x00a03038 },
418 { .start = 0x00a03040, .end = 0x00a03048 },
419 { .start = 0x00a03060, .end = 0x00a03068 },
420 { .start = 0x00a03070, .end = 0x00a03074 },
421 { .start = 0x00a0307c, .end = 0x00a0307c },
422 { .start = 0x00a03080, .end = 0x00a03084 },
423 { .start = 0x00a0308c, .end = 0x00a03090 },
424 { .start = 0x00a03098, .end = 0x00a03098 },
425 { .start = 0x00a030a0, .end = 0x00a030a0 },
426 { .start = 0x00a030a8, .end = 0x00a030b4 },
427 { .start = 0x00a030bc, .end = 0x00a030bc },
428 { .start = 0x00a030c0, .end = 0x00a0312c },
429 { .start = 0x00a03c00, .end = 0x00a03c5c },
430 { .start = 0x00a04400, .end = 0x00a04454 },
431 { .start = 0x00a04460, .end = 0x00a04474 },
432 { .start = 0x00a044c0, .end = 0x00a044ec },
433 { .start = 0x00a04500, .end = 0x00a04504 },
434 { .start = 0x00a04510, .end = 0x00a04538 },
435 { .start = 0x00a04540, .end = 0x00a04548 },
436 { .start = 0x00a04560, .end = 0x00a0457c },
437 { .start = 0x00a04590, .end = 0x00a04598 },
438 { .start = 0x00a045c0, .end = 0x00a045f4 },
439 { .start = 0x00a44000, .end = 0x00a7bf80 },
440 };
441
442 static u32 iwl_dump_prph(struct iwl_trans *trans,
443 struct iwl_fw_error_dump_data **data)
444 {
445 struct iwl_fw_error_dump_prph *prph;
446 unsigned long flags;
447 u32 prph_len = 0, i;
448
449 if (!iwl_trans_grab_nic_access(trans, &flags))
450 return 0;
451
452 for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) {
453 /* The range includes both boundaries */
454 int num_bytes_in_chunk = iwl_prph_dump_addr[i].end -
455 iwl_prph_dump_addr[i].start + 4;
456 int reg;
457 __le32 *val;
458
459 prph_len += sizeof(**data) + sizeof(*prph) + num_bytes_in_chunk;
460
461 (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PRPH);
462 (*data)->len = cpu_to_le32(sizeof(*prph) +
463 num_bytes_in_chunk);
464 prph = (void *)(*data)->data;
465 prph->prph_start = cpu_to_le32(iwl_prph_dump_addr[i].start);
466 val = (void *)prph->data;
467
468 for (reg = iwl_prph_dump_addr[i].start;
469 reg <= iwl_prph_dump_addr[i].end;
470 reg += 4)
471 *val++ = cpu_to_le32(iwl_read_prph_no_grab(trans,
472 reg));
473
474 *data = iwl_fw_error_next_data(*data);
475 }
476
477 iwl_trans_release_nic_access(trans, &flags);
478
479 return prph_len;
480 }
481
482 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
483 {
484 struct iwl_fw_error_dump_file *dump_file;
485 struct iwl_fw_error_dump_data *dump_data;
486 struct iwl_fw_error_dump_info *dump_info;
487 struct iwl_fw_error_dump_mem *dump_mem;
488 struct iwl_fw_error_dump_trigger_desc *dump_trig;
489 struct iwl_mvm_dump_ptrs *fw_error_dump;
490 u32 sram_len, sram_ofs;
491 struct iwl_fw_dbg_mem_seg_tlv * const *fw_dbg_mem =
492 mvm->fw->dbg_mem_tlv;
493 u32 file_len, fifo_data_len = 0, prph_len = 0, radio_len = 0;
494 u32 smem_len = mvm->fw->dbg_dynamic_mem ? 0 : mvm->cfg->smem_len;
495 u32 sram2_len = mvm->fw->dbg_dynamic_mem ? 0 : mvm->cfg->dccm2_len;
496 bool monitor_dump_only = false;
497 int i;
498
499 if (!IWL_MVM_COLLECT_FW_ERR_DUMP &&
500 !mvm->trans->dbg_dest_tlv)
501 return;
502
503 lockdep_assert_held(&mvm->mutex);
504
505 /* there's no point in fw dump if the bus is dead */
506 if (test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
507 IWL_ERR(mvm, "Skip fw error dump since bus is dead\n");
508 goto out;
509 }
510
511 if (mvm->fw_dump_trig &&
512 mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)
513 monitor_dump_only = true;
514
515 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
516 if (!fw_error_dump)
517 goto out;
518
519 /* SRAM - include stack CCM if driver knows the values for it */
520 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
521 const struct fw_img *img;
522
523 img = &mvm->fw->img[mvm->cur_ucode];
524 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
525 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
526 } else {
527 sram_ofs = mvm->cfg->dccm_offset;
528 sram_len = mvm->cfg->dccm_len;
529 }
530
531 /* reading RXF/TXF sizes */
532 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
533 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
534
535 fifo_data_len = 0;
536
537 /* Count RXF size */
538 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
539 if (!mem_cfg->rxfifo_size[i])
540 continue;
541
542 /* Add header info */
543 fifo_data_len += mem_cfg->rxfifo_size[i] +
544 sizeof(*dump_data) +
545 sizeof(struct iwl_fw_error_dump_fifo);
546 }
547
548 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
549 if (!mem_cfg->txfifo_size[i])
550 continue;
551
552 /* Add header info */
553 fifo_data_len += mem_cfg->txfifo_size[i] +
554 sizeof(*dump_data) +
555 sizeof(struct iwl_fw_error_dump_fifo);
556 }
557
558 if (fw_has_capa(&mvm->fw->ucode_capa,
559 IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG)) {
560 for (i = 0;
561 i < ARRAY_SIZE(mem_cfg->internal_txfifo_size);
562 i++) {
563 if (!mem_cfg->internal_txfifo_size[i])
564 continue;
565
566 /* Add header info */
567 fifo_data_len +=
568 mem_cfg->internal_txfifo_size[i] +
569 sizeof(*dump_data) +
570 sizeof(struct iwl_fw_error_dump_fifo);
571 }
572 }
573
574 /* Make room for PRPH registers */
575 for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) {
576 /* The range includes both boundaries */
577 int num_bytes_in_chunk = iwl_prph_dump_addr[i].end -
578 iwl_prph_dump_addr[i].start + 4;
579
580 prph_len += sizeof(*dump_data) +
581 sizeof(struct iwl_fw_error_dump_prph) +
582 num_bytes_in_chunk;
583 }
584
585 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000)
586 radio_len = sizeof(*dump_data) + RADIO_REG_MAX_READ;
587 }
588
589 file_len = sizeof(*dump_file) +
590 sizeof(*dump_data) * 2 +
591 fifo_data_len +
592 prph_len +
593 radio_len +
594 sizeof(*dump_info);
595
596 /* Make room for the SMEM, if it exists */
597 if (smem_len)
598 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
599
600 /* Make room for the secondary SRAM, if it exists */
601 if (sram2_len)
602 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
603
604 /* Make room for MEM segments */
605 for (i = 0; i < ARRAY_SIZE(mvm->fw->dbg_mem_tlv); i++) {
606 if (fw_dbg_mem[i])
607 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
608 le32_to_cpu(fw_dbg_mem[i]->len);
609 }
610
611 /* Make room for fw's virtual image pages, if it exists */
612 if (mvm->fw->img[mvm->cur_ucode].paging_mem_size &&
613 mvm->fw_paging_db[0].fw_paging_block)
614 file_len += mvm->num_of_paging_blk *
615 (sizeof(*dump_data) +
616 sizeof(struct iwl_fw_error_dump_paging) +
617 PAGING_BLOCK_SIZE);
618
619 /* If we only want a monitor dump, reset the file length */
620 if (monitor_dump_only) {
621 file_len = sizeof(*dump_file) + sizeof(*dump_data) +
622 sizeof(*dump_info);
623 }
624
625 /*
626 * In 8000 HW family B-step include the ICCM (which resides separately)
627 */
628 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
629 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
630 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
631 IWL8260_ICCM_LEN;
632
633 if (mvm->fw_dump_desc)
634 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
635 mvm->fw_dump_desc->len;
636
637 if (!mvm->fw->dbg_dynamic_mem)
638 file_len += sram_len + sizeof(*dump_mem);
639
640 dump_file = vzalloc(file_len);
641 if (!dump_file) {
642 kfree(fw_error_dump);
643 goto out;
644 }
645
646 fw_error_dump->op_mode_ptr = dump_file;
647
648 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
649 dump_data = (void *)dump_file->data;
650
651 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
652 dump_data->len = cpu_to_le32(sizeof(*dump_info));
653 dump_info = (void *)dump_data->data;
654 dump_info->device_family =
655 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
656 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
657 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
658 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
659 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
660 sizeof(dump_info->fw_human_readable));
661 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
662 sizeof(dump_info->dev_human_readable));
663 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
664 sizeof(dump_info->bus_human_readable));
665
666 dump_data = iwl_fw_error_next_data(dump_data);
667 /* We only dump the FIFOs if the FW is in error state */
668 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
669 iwl_mvm_dump_fifos(mvm, &dump_data);
670 if (radio_len)
671 iwl_mvm_read_radio_reg(mvm, &dump_data);
672 }
673
674 if (mvm->fw_dump_desc) {
675 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
676 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
677 mvm->fw_dump_desc->len);
678 dump_trig = (void *)dump_data->data;
679 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
680 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
681
682 dump_data = iwl_fw_error_next_data(dump_data);
683 }
684
685 /* In case we only want monitor dump, skip to dump trasport data */
686 if (monitor_dump_only)
687 goto dump_trans_data;
688
689 if (!mvm->fw->dbg_dynamic_mem) {
690 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
691 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
692 dump_mem = (void *)dump_data->data;
693 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
694 dump_mem->offset = cpu_to_le32(sram_ofs);
695 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
696 sram_len);
697 dump_data = iwl_fw_error_next_data(dump_data);
698 }
699
700 for (i = 0; i < ARRAY_SIZE(mvm->fw->dbg_mem_tlv); i++) {
701 if (fw_dbg_mem[i]) {
702 u32 len = le32_to_cpu(fw_dbg_mem[i]->len);
703 u32 ofs = le32_to_cpu(fw_dbg_mem[i]->ofs);
704
705 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
706 dump_data->len = cpu_to_le32(len +
707 sizeof(*dump_mem));
708 dump_mem = (void *)dump_data->data;
709 dump_mem->type = fw_dbg_mem[i]->data_type;
710 dump_mem->offset = cpu_to_le32(ofs);
711 iwl_trans_read_mem_bytes(mvm->trans, ofs,
712 dump_mem->data,
713 len);
714 dump_data = iwl_fw_error_next_data(dump_data);
715 }
716 }
717
718 if (smem_len) {
719 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
720 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
721 dump_mem = (void *)dump_data->data;
722 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
723 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
724 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
725 dump_mem->data, smem_len);
726 dump_data = iwl_fw_error_next_data(dump_data);
727 }
728
729 if (sram2_len) {
730 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
731 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
732 dump_mem = (void *)dump_data->data;
733 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
734 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
735 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
736 dump_mem->data, sram2_len);
737 dump_data = iwl_fw_error_next_data(dump_data);
738 }
739
740 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
741 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
742 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
743 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
744 sizeof(*dump_mem));
745 dump_mem = (void *)dump_data->data;
746 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
747 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
748 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
749 dump_mem->data, IWL8260_ICCM_LEN);
750 dump_data = iwl_fw_error_next_data(dump_data);
751 }
752
753 /* Dump fw's virtual image */
754 if (mvm->fw->img[mvm->cur_ucode].paging_mem_size &&
755 mvm->fw_paging_db[0].fw_paging_block) {
756 for (i = 1; i < mvm->num_of_paging_blk + 1; i++) {
757 struct iwl_fw_error_dump_paging *paging;
758 struct page *pages =
759 mvm->fw_paging_db[i].fw_paging_block;
760
761 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING);
762 dump_data->len = cpu_to_le32(sizeof(*paging) +
763 PAGING_BLOCK_SIZE);
764 paging = (void *)dump_data->data;
765 paging->index = cpu_to_le32(i);
766 memcpy(paging->data, page_address(pages),
767 PAGING_BLOCK_SIZE);
768 dump_data = iwl_fw_error_next_data(dump_data);
769 }
770 }
771
772 if (prph_len)
773 iwl_dump_prph(mvm->trans, &dump_data);
774
775 dump_trans_data:
776 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
777 mvm->fw_dump_trig);
778 fw_error_dump->op_mode_len = file_len;
779 if (fw_error_dump->trans_ptr)
780 file_len += fw_error_dump->trans_ptr->len;
781 dump_file->file_len = cpu_to_le32(file_len);
782
783 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
784 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
785
786 out:
787 iwl_mvm_free_fw_dump_desc(mvm);
788 mvm->fw_dump_trig = NULL;
789 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
790 }
791
792 const struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
793 .trig_desc = {
794 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
795 },
796 };
797
798 int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
799 const struct iwl_mvm_dump_desc *desc,
800 const struct iwl_fw_dbg_trigger_tlv *trigger)
801 {
802 unsigned int delay = 0;
803
804 if (trigger)
805 delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay));
806
807 if (test_and_set_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status))
808 return -EBUSY;
809
810 if (WARN_ON(mvm->fw_dump_desc))
811 iwl_mvm_free_fw_dump_desc(mvm);
812
813 IWL_WARN(mvm, "Collecting data: trigger %d fired.\n",
814 le32_to_cpu(desc->trig_desc.type));
815
816 mvm->fw_dump_desc = desc;
817 mvm->fw_dump_trig = trigger;
818
819 queue_delayed_work(system_wq, &mvm->fw_dump_wk, delay);
820
821 return 0;
822 }
823
824 int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig,
825 const char *str, size_t len,
826 const struct iwl_fw_dbg_trigger_tlv *trigger)
827 {
828 struct iwl_mvm_dump_desc *desc;
829
830 desc = kzalloc(sizeof(*desc) + len, GFP_ATOMIC);
831 if (!desc)
832 return -ENOMEM;
833
834 desc->len = len;
835 desc->trig_desc.type = cpu_to_le32(trig);
836 memcpy(desc->trig_desc.data, str, len);
837
838 return iwl_mvm_fw_dbg_collect_desc(mvm, desc, trigger);
839 }
840
841 int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
842 struct iwl_fw_dbg_trigger_tlv *trigger,
843 const char *fmt, ...)
844 {
845 u16 occurrences = le16_to_cpu(trigger->occurrences);
846 int ret, len = 0;
847 char buf[64];
848
849 if (!occurrences)
850 return 0;
851
852 if (fmt) {
853 va_list ap;
854
855 buf[sizeof(buf) - 1] = '\0';
856
857 va_start(ap, fmt);
858 vsnprintf(buf, sizeof(buf), fmt, ap);
859 va_end(ap);
860
861 /* check for truncation */
862 if (WARN_ON_ONCE(buf[sizeof(buf) - 1]))
863 buf[sizeof(buf) - 1] = '\0';
864
865 len = strlen(buf) + 1;
866 }
867
868 ret = iwl_mvm_fw_dbg_collect(mvm, le32_to_cpu(trigger->id), buf, len,
869 trigger);
870
871 if (ret)
872 return ret;
873
874 trigger->occurrences = cpu_to_le16(occurrences - 1);
875 return 0;
876 }
877
878 static inline void iwl_mvm_restart_early_start(struct iwl_mvm *mvm)
879 {
880 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000)
881 iwl_clear_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
882 else
883 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 1);
884 }
885
886 int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, u8 conf_id)
887 {
888 u8 *ptr;
889 int ret;
890 int i;
891
892 if (WARN_ONCE(conf_id >= ARRAY_SIZE(mvm->fw->dbg_conf_tlv),
893 "Invalid configuration %d\n", conf_id))
894 return -EINVAL;
895
896 /* EARLY START - firmware's configuration is hard coded */
897 if ((!mvm->fw->dbg_conf_tlv[conf_id] ||
898 !mvm->fw->dbg_conf_tlv[conf_id]->num_of_hcmds) &&
899 conf_id == FW_DBG_START_FROM_ALIVE) {
900 iwl_mvm_restart_early_start(mvm);
901 return 0;
902 }
903
904 if (!mvm->fw->dbg_conf_tlv[conf_id])
905 return -EINVAL;
906
907 if (mvm->fw_dbg_conf != FW_DBG_INVALID)
908 IWL_WARN(mvm, "FW already configured (%d) - re-configuring\n",
909 mvm->fw_dbg_conf);
910
911 /* Send all HCMDs for configuring the FW debug */
912 ptr = (void *)&mvm->fw->dbg_conf_tlv[conf_id]->hcmd;
913 for (i = 0; i < mvm->fw->dbg_conf_tlv[conf_id]->num_of_hcmds; i++) {
914 struct iwl_fw_dbg_conf_hcmd *cmd = (void *)ptr;
915
916 ret = iwl_mvm_send_cmd_pdu(mvm, cmd->id, 0,
917 le16_to_cpu(cmd->len), cmd->data);
918 if (ret)
919 return ret;
920
921 ptr += sizeof(*cmd);
922 ptr += le16_to_cpu(cmd->len);
923 }
924
925 mvm->fw_dbg_conf = conf_id;
926 return ret;
927 }
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