1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2022 Intel Corporation
4 //
5 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
6
7 #include <linux/debugfs.h>
8 #include <linux/sched/signal.h>
9 #include "sof-priv.h"
10 #include "sof-audio.h"
11 #include "ops.h"
12 #include "sof-utils.h"
13 #include "ipc3-priv.h"
14
15 #define TRACE_FILTER_ELEMENTS_PER_ENTRY 4
16 #define TRACE_FILTER_MAX_CONFIG_STRING_LENGTH 1024
17
18 enum sof_dtrace_state {
19 SOF_DTRACE_DISABLED,
20 SOF_DTRACE_STOPPED,
21 SOF_DTRACE_INITIALIZING,
22 SOF_DTRACE_ENABLED,
23 };
24
25 struct sof_dtrace_priv {
26 struct snd_dma_buffer dmatb;
27 struct snd_dma_buffer dmatp;
28 int dma_trace_pages;
29 wait_queue_head_t trace_sleep;
30 u32 host_offset;
31 bool dtrace_error;
32 bool dtrace_draining;
33 enum sof_dtrace_state dtrace_state;
34 };
35
trace_pos_update_expected(struct sof_dtrace_priv * priv)36 static bool trace_pos_update_expected(struct sof_dtrace_priv *priv)
37 {
38 if (priv->dtrace_state == SOF_DTRACE_ENABLED ||
39 priv->dtrace_state == SOF_DTRACE_INITIALIZING)
40 return true;
41
42 return false;
43 }
44
trace_filter_append_elem(struct snd_sof_dev * sdev,u32 key,u32 value,struct sof_ipc_trace_filter_elem * elem_list,int capacity,int * counter)45 static int trace_filter_append_elem(struct snd_sof_dev *sdev, u32 key, u32 value,
46 struct sof_ipc_trace_filter_elem *elem_list,
47 int capacity, int *counter)
48 {
49 if (*counter >= capacity)
50 return -ENOMEM;
51
52 elem_list[*counter].key = key;
53 elem_list[*counter].value = value;
54 ++*counter;
55
56 return 0;
57 }
58
trace_filter_parse_entry(struct snd_sof_dev * sdev,const char * line,struct sof_ipc_trace_filter_elem * elem,int capacity,int * counter)59 static int trace_filter_parse_entry(struct snd_sof_dev *sdev, const char *line,
60 struct sof_ipc_trace_filter_elem *elem,
61 int capacity, int *counter)
62 {
63 int log_level, pipe_id, comp_id, read, ret;
64 int len = strlen(line);
65 int cnt = *counter;
66 u32 uuid_id;
67
68 /* ignore empty content */
69 ret = sscanf(line, " %n", &read);
70 if (!ret && read == len)
71 return len;
72
73 ret = sscanf(line, " %d %x %d %d %n", &log_level, &uuid_id, &pipe_id, &comp_id, &read);
74 if (ret != TRACE_FILTER_ELEMENTS_PER_ENTRY || read != len) {
75 dev_err(sdev->dev, "Invalid trace filter entry '%s'\n", line);
76 return -EINVAL;
77 }
78
79 if (uuid_id > 0) {
80 ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_BY_UUID,
81 uuid_id, elem, capacity, &cnt);
82 if (ret)
83 return ret;
84 }
85 if (pipe_id >= 0) {
86 ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_BY_PIPE,
87 pipe_id, elem, capacity, &cnt);
88 if (ret)
89 return ret;
90 }
91 if (comp_id >= 0) {
92 ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_BY_COMP,
93 comp_id, elem, capacity, &cnt);
94 if (ret)
95 return ret;
96 }
97
98 ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_SET_LEVEL |
99 SOF_IPC_TRACE_FILTER_ELEM_FIN,
100 log_level, elem, capacity, &cnt);
101 if (ret)
102 return ret;
103
104 /* update counter only when parsing whole entry passed */
105 *counter = cnt;
106
107 return len;
108 }
109
trace_filter_parse(struct snd_sof_dev * sdev,char * string,int * out_elem_cnt,struct sof_ipc_trace_filter_elem ** out)110 static int trace_filter_parse(struct snd_sof_dev *sdev, char *string,
111 int *out_elem_cnt,
112 struct sof_ipc_trace_filter_elem **out)
113 {
114 static const char entry_delimiter[] = ";";
115 char *entry = string;
116 int capacity = 0;
117 int entry_len;
118 int cnt = 0;
119
120 /*
121 * Each entry contains at least 1, up to TRACE_FILTER_ELEMENTS_PER_ENTRY
122 * IPC elements, depending on content. Calculate IPC elements capacity
123 * for the input string where each element is set.
124 */
125 while (entry) {
126 capacity += TRACE_FILTER_ELEMENTS_PER_ENTRY;
127 entry = strchr(entry + 1, entry_delimiter[0]);
128 }
129 *out = kmalloc(capacity * sizeof(**out), GFP_KERNEL);
130 if (!*out)
131 return -ENOMEM;
132
133 /* split input string by ';', and parse each entry separately in trace_filter_parse_entry */
134 while ((entry = strsep(&string, entry_delimiter))) {
135 entry_len = trace_filter_parse_entry(sdev, entry, *out, capacity, &cnt);
136 if (entry_len < 0) {
137 dev_err(sdev->dev,
138 "Parsing filter entry '%s' failed with %d\n",
139 entry, entry_len);
140 return -EINVAL;
141 }
142 }
143
144 *out_elem_cnt = cnt;
145
146 return 0;
147 }
148
ipc3_trace_update_filter(struct snd_sof_dev * sdev,int num_elems,struct sof_ipc_trace_filter_elem * elems)149 static int ipc3_trace_update_filter(struct snd_sof_dev *sdev, int num_elems,
150 struct sof_ipc_trace_filter_elem *elems)
151 {
152 struct sof_ipc_trace_filter *msg;
153 size_t size;
154 int ret;
155
156 size = struct_size(msg, elems, num_elems);
157 if (size > SOF_IPC_MSG_MAX_SIZE)
158 return -EINVAL;
159
160 msg = kmalloc(size, GFP_KERNEL);
161 if (!msg)
162 return -ENOMEM;
163
164 msg->hdr.size = size;
165 msg->hdr.cmd = SOF_IPC_GLB_TRACE_MSG | SOF_IPC_TRACE_FILTER_UPDATE;
166 msg->elem_cnt = num_elems;
167 memcpy(&msg->elems[0], elems, num_elems * sizeof(*elems));
168
169 ret = pm_runtime_resume_and_get(sdev->dev);
170 if (ret < 0 && ret != -EACCES) {
171 dev_err(sdev->dev, "enabling device failed: %d\n", ret);
172 goto error;
173 }
174 ret = sof_ipc_tx_message_no_reply(sdev->ipc, msg, msg->hdr.size);
175 pm_runtime_put_autosuspend(sdev->dev);
176
177 error:
178 kfree(msg);
179 return ret;
180 }
181
dfsentry_trace_filter_write(struct file * file,const char __user * from,size_t count,loff_t * ppos)182 static ssize_t dfsentry_trace_filter_write(struct file *file, const char __user *from,
183 size_t count, loff_t *ppos)
184 {
185 struct snd_sof_dfsentry *dfse = file->private_data;
186 struct sof_ipc_trace_filter_elem *elems = NULL;
187 struct snd_sof_dev *sdev = dfse->sdev;
188 int num_elems;
189 char *string;
190 int ret;
191
192 if (count > TRACE_FILTER_MAX_CONFIG_STRING_LENGTH) {
193 dev_err(sdev->dev, "%s too long input, %zu > %d\n", __func__, count,
194 TRACE_FILTER_MAX_CONFIG_STRING_LENGTH);
195 return -EINVAL;
196 }
197
198 string = memdup_user_nul(from, count);
199 if (IS_ERR(string))
200 return PTR_ERR(string);
201
202 ret = trace_filter_parse(sdev, string, &num_elems, &elems);
203 if (ret < 0)
204 goto error;
205
206 if (num_elems) {
207 ret = ipc3_trace_update_filter(sdev, num_elems, elems);
208 if (ret < 0) {
209 dev_err(sdev->dev, "Filter update failed: %d\n", ret);
210 goto error;
211 }
212 }
213 ret = count;
214 error:
215 kfree(string);
216 kfree(elems);
217 return ret;
218 }
219
220 static const struct file_operations sof_dfs_trace_filter_fops = {
221 .open = simple_open,
222 .write = dfsentry_trace_filter_write,
223 .llseek = default_llseek,
224 };
225
debugfs_create_trace_filter(struct snd_sof_dev * sdev)226 static int debugfs_create_trace_filter(struct snd_sof_dev *sdev)
227 {
228 struct snd_sof_dfsentry *dfse;
229
230 dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL);
231 if (!dfse)
232 return -ENOMEM;
233
234 dfse->sdev = sdev;
235 dfse->type = SOF_DFSENTRY_TYPE_BUF;
236
237 debugfs_create_file("filter", 0200, sdev->debugfs_root, dfse,
238 &sof_dfs_trace_filter_fops);
239 /* add to dfsentry list */
240 list_add(&dfse->list, &sdev->dfsentry_list);
241
242 return 0;
243 }
244
sof_dtrace_set_host_offset(struct sof_dtrace_priv * priv,u32 new_offset)245 static bool sof_dtrace_set_host_offset(struct sof_dtrace_priv *priv, u32 new_offset)
246 {
247 u32 host_offset = READ_ONCE(priv->host_offset);
248
249 if (host_offset != new_offset) {
250 /* This is a bit paranoid and unlikely that it is needed */
251 u32 ret = cmpxchg(&priv->host_offset, host_offset, new_offset);
252
253 if (ret == host_offset)
254 return true;
255 }
256
257 return false;
258 }
259
sof_dtrace_avail(struct snd_sof_dev * sdev,loff_t pos,size_t buffer_size)260 static size_t sof_dtrace_avail(struct snd_sof_dev *sdev,
261 loff_t pos, size_t buffer_size)
262 {
263 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
264 loff_t host_offset = READ_ONCE(priv->host_offset);
265
266 /*
267 * If host offset is less than local pos, it means write pointer of
268 * host DMA buffer has been wrapped. We should output the trace data
269 * at the end of host DMA buffer at first.
270 */
271 if (host_offset < pos)
272 return buffer_size - pos;
273
274 /* If there is available trace data now, it is unnecessary to wait. */
275 if (host_offset > pos)
276 return host_offset - pos;
277
278 return 0;
279 }
280
sof_wait_dtrace_avail(struct snd_sof_dev * sdev,loff_t pos,size_t buffer_size)281 static size_t sof_wait_dtrace_avail(struct snd_sof_dev *sdev, loff_t pos,
282 size_t buffer_size)
283 {
284 size_t ret = sof_dtrace_avail(sdev, pos, buffer_size);
285 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
286 wait_queue_entry_t wait;
287
288 /* data immediately available */
289 if (ret)
290 return ret;
291
292 if (priv->dtrace_draining && !trace_pos_update_expected(priv)) {
293 /*
294 * tracing has ended and all traces have been
295 * read by client, return EOF
296 */
297 priv->dtrace_draining = false;
298 return 0;
299 }
300
301 /* wait for available trace data from FW */
302 init_waitqueue_entry(&wait, current);
303 set_current_state(TASK_INTERRUPTIBLE);
304 add_wait_queue(&priv->trace_sleep, &wait);
305
306 if (!signal_pending(current)) {
307 /* set timeout to max value, no error code */
308 schedule_timeout(MAX_SCHEDULE_TIMEOUT);
309 }
310 remove_wait_queue(&priv->trace_sleep, &wait);
311
312 return sof_dtrace_avail(sdev, pos, buffer_size);
313 }
314
dfsentry_dtrace_read(struct file * file,char __user * buffer,size_t count,loff_t * ppos)315 static ssize_t dfsentry_dtrace_read(struct file *file, char __user *buffer,
316 size_t count, loff_t *ppos)
317 {
318 struct snd_sof_dfsentry *dfse = file->private_data;
319 struct snd_sof_dev *sdev = dfse->sdev;
320 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
321 unsigned long rem;
322 loff_t lpos = *ppos;
323 size_t avail, buffer_size = dfse->size;
324 u64 lpos_64;
325
326 /* make sure we know about any failures on the DSP side */
327 priv->dtrace_error = false;
328
329 /* check pos and count */
330 if (lpos < 0)
331 return -EINVAL;
332 if (!count)
333 return 0;
334
335 /* check for buffer wrap and count overflow */
336 lpos_64 = lpos;
337 lpos = do_div(lpos_64, buffer_size);
338
339 /* get available count based on current host offset */
340 avail = sof_wait_dtrace_avail(sdev, lpos, buffer_size);
341 if (priv->dtrace_error) {
342 dev_err(sdev->dev, "trace IO error\n");
343 return -EIO;
344 }
345
346 /* no new trace data */
347 if (!avail)
348 return 0;
349
350 /* make sure count is <= avail */
351 if (count > avail)
352 count = avail;
353
354 /*
355 * make sure that all trace data is available for the CPU as the trace
356 * data buffer might be allocated from non consistent memory.
357 * Note: snd_dma_buffer_sync() is called for normal audio playback and
358 * capture streams also.
359 */
360 snd_dma_buffer_sync(&priv->dmatb, SNDRV_DMA_SYNC_CPU);
361 /* copy available trace data to debugfs */
362 rem = copy_to_user(buffer, ((u8 *)(dfse->buf) + lpos), count);
363 if (rem)
364 return -EFAULT;
365
366 *ppos += count;
367
368 /* move debugfs reading position */
369 return count;
370 }
371
dfsentry_dtrace_release(struct inode * inode,struct file * file)372 static int dfsentry_dtrace_release(struct inode *inode, struct file *file)
373 {
374 struct snd_sof_dfsentry *dfse = inode->i_private;
375 struct snd_sof_dev *sdev = dfse->sdev;
376 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
377
378 /* avoid duplicate traces at next open */
379 if (priv->dtrace_state != SOF_DTRACE_ENABLED)
380 sof_dtrace_set_host_offset(priv, 0);
381
382 return 0;
383 }
384
385 static const struct file_operations sof_dfs_dtrace_fops = {
386 .open = simple_open,
387 .read = dfsentry_dtrace_read,
388 .llseek = default_llseek,
389 .release = dfsentry_dtrace_release,
390 };
391
debugfs_create_dtrace(struct snd_sof_dev * sdev)392 static int debugfs_create_dtrace(struct snd_sof_dev *sdev)
393 {
394 struct sof_dtrace_priv *priv;
395 struct snd_sof_dfsentry *dfse;
396 int ret;
397
398 if (!sdev)
399 return -EINVAL;
400
401 priv = sdev->fw_trace_data;
402
403 ret = debugfs_create_trace_filter(sdev);
404 if (ret < 0)
405 dev_warn(sdev->dev, "failed to create filter debugfs file: %d", ret);
406
407 dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL);
408 if (!dfse)
409 return -ENOMEM;
410
411 dfse->type = SOF_DFSENTRY_TYPE_BUF;
412 dfse->buf = priv->dmatb.area;
413 dfse->size = priv->dmatb.bytes;
414 dfse->sdev = sdev;
415
416 debugfs_create_file("trace", 0444, sdev->debugfs_root, dfse,
417 &sof_dfs_dtrace_fops);
418
419 return 0;
420 }
421
ipc3_dtrace_enable(struct snd_sof_dev * sdev)422 static int ipc3_dtrace_enable(struct snd_sof_dev *sdev)
423 {
424 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
425 struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
426 struct sof_ipc_fw_version *v = &ready->version;
427 struct sof_ipc_dma_trace_params_ext params;
428 int ret;
429
430 if (!sdev->fw_trace_is_supported)
431 return 0;
432
433 if (priv->dtrace_state == SOF_DTRACE_ENABLED || !priv->dma_trace_pages)
434 return -EINVAL;
435
436 if (priv->dtrace_state == SOF_DTRACE_STOPPED)
437 goto start;
438
439 /* set IPC parameters */
440 params.hdr.cmd = SOF_IPC_GLB_TRACE_MSG;
441 /* PARAMS_EXT is only supported from ABI 3.7.0 onwards */
442 if (v->abi_version >= SOF_ABI_VER(3, 7, 0)) {
443 params.hdr.size = sizeof(struct sof_ipc_dma_trace_params_ext);
444 params.hdr.cmd |= SOF_IPC_TRACE_DMA_PARAMS_EXT;
445 params.timestamp_ns = ktime_get(); /* in nanosecond */
446 } else {
447 params.hdr.size = sizeof(struct sof_ipc_dma_trace_params);
448 params.hdr.cmd |= SOF_IPC_TRACE_DMA_PARAMS;
449 }
450 params.buffer.phy_addr = priv->dmatp.addr;
451 params.buffer.size = priv->dmatb.bytes;
452 params.buffer.pages = priv->dma_trace_pages;
453 params.stream_tag = 0;
454
455 sof_dtrace_set_host_offset(priv, 0);
456 priv->dtrace_draining = false;
457
458 ret = sof_dtrace_host_init(sdev, &priv->dmatb, ¶ms);
459 if (ret < 0) {
460 dev_err(sdev->dev, "Host dtrace init failed: %d\n", ret);
461 return ret;
462 }
463 dev_dbg(sdev->dev, "stream_tag: %d\n", params.stream_tag);
464
465 /* send IPC to the DSP */
466 priv->dtrace_state = SOF_DTRACE_INITIALIZING;
467 ret = sof_ipc_tx_message_no_reply(sdev->ipc, ¶ms, sizeof(params));
468 if (ret < 0) {
469 dev_err(sdev->dev, "can't set params for DMA for trace %d\n", ret);
470 goto trace_release;
471 }
472
473 start:
474 priv->dtrace_state = SOF_DTRACE_ENABLED;
475
476 ret = sof_dtrace_host_trigger(sdev, SNDRV_PCM_TRIGGER_START);
477 if (ret < 0) {
478 dev_err(sdev->dev, "Host dtrace trigger start failed: %d\n", ret);
479 goto trace_release;
480 }
481
482 return 0;
483
484 trace_release:
485 priv->dtrace_state = SOF_DTRACE_DISABLED;
486 sof_dtrace_host_release(sdev);
487 return ret;
488 }
489
ipc3_dtrace_init(struct snd_sof_dev * sdev)490 static int ipc3_dtrace_init(struct snd_sof_dev *sdev)
491 {
492 struct sof_dtrace_priv *priv;
493 int ret;
494
495 /* dtrace is only supported with SOF_IPC */
496 if (sdev->pdata->ipc_type != SOF_IPC_TYPE_3)
497 return -EOPNOTSUPP;
498
499 if (sdev->fw_trace_data) {
500 dev_err(sdev->dev, "fw_trace_data has been already allocated\n");
501 return -EBUSY;
502 }
503
504 priv = devm_kzalloc(sdev->dev, sizeof(*priv), GFP_KERNEL);
505 if (!priv)
506 return -ENOMEM;
507
508 sdev->fw_trace_data = priv;
509
510 /* set false before start initialization */
511 priv->dtrace_state = SOF_DTRACE_DISABLED;
512
513 /* allocate trace page table buffer */
514 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, sdev->dev,
515 PAGE_SIZE, &priv->dmatp);
516 if (ret < 0) {
517 dev_err(sdev->dev, "can't alloc page table for trace %d\n", ret);
518 return ret;
519 }
520
521 /* allocate trace data buffer */
522 ret = snd_dma_alloc_dir_pages(SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
523 DMA_FROM_DEVICE, DMA_BUF_SIZE_FOR_TRACE,
524 &priv->dmatb);
525 if (ret < 0) {
526 dev_err(sdev->dev, "can't alloc buffer for trace %d\n", ret);
527 goto page_err;
528 }
529
530 /* create compressed page table for audio firmware */
531 ret = snd_sof_create_page_table(sdev->dev, &priv->dmatb,
532 priv->dmatp.area, priv->dmatb.bytes);
533 if (ret < 0)
534 goto table_err;
535
536 priv->dma_trace_pages = ret;
537 dev_dbg(sdev->dev, "dma_trace_pages: %d\n", priv->dma_trace_pages);
538
539 if (sdev->first_boot) {
540 ret = debugfs_create_dtrace(sdev);
541 if (ret < 0)
542 goto table_err;
543 }
544
545 init_waitqueue_head(&priv->trace_sleep);
546
547 ret = ipc3_dtrace_enable(sdev);
548 if (ret < 0)
549 goto table_err;
550
551 return 0;
552 table_err:
553 priv->dma_trace_pages = 0;
554 snd_dma_free_pages(&priv->dmatb);
555 page_err:
556 snd_dma_free_pages(&priv->dmatp);
557 return ret;
558 }
559
ipc3_dtrace_posn_update(struct snd_sof_dev * sdev,struct sof_ipc_dma_trace_posn * posn)560 int ipc3_dtrace_posn_update(struct snd_sof_dev *sdev,
561 struct sof_ipc_dma_trace_posn *posn)
562 {
563 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
564
565 if (!sdev->fw_trace_is_supported)
566 return 0;
567
568 if (trace_pos_update_expected(priv) &&
569 sof_dtrace_set_host_offset(priv, posn->host_offset))
570 wake_up(&priv->trace_sleep);
571
572 if (posn->overflow != 0)
573 dev_err(sdev->dev,
574 "DSP trace buffer overflow %u bytes. Total messages %d\n",
575 posn->overflow, posn->messages);
576
577 return 0;
578 }
579
580 /* an error has occurred within the DSP that prevents further trace */
ipc3_dtrace_fw_crashed(struct snd_sof_dev * sdev)581 static void ipc3_dtrace_fw_crashed(struct snd_sof_dev *sdev)
582 {
583 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
584
585 if (priv->dtrace_state == SOF_DTRACE_ENABLED) {
586 priv->dtrace_error = true;
587 wake_up(&priv->trace_sleep);
588 }
589 }
590
ipc3_dtrace_release(struct snd_sof_dev * sdev,bool only_stop)591 static void ipc3_dtrace_release(struct snd_sof_dev *sdev, bool only_stop)
592 {
593 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
594 struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
595 struct sof_ipc_fw_version *v = &ready->version;
596 struct sof_ipc_cmd_hdr hdr;
597 int ret;
598
599 if (!sdev->fw_trace_is_supported || priv->dtrace_state == SOF_DTRACE_DISABLED)
600 return;
601
602 ret = sof_dtrace_host_trigger(sdev, SNDRV_PCM_TRIGGER_STOP);
603 if (ret < 0)
604 dev_err(sdev->dev, "Host dtrace trigger stop failed: %d\n", ret);
605 priv->dtrace_state = SOF_DTRACE_STOPPED;
606
607 /*
608 * stop and free trace DMA in the DSP. TRACE_DMA_FREE is only supported from
609 * ABI 3.20.0 onwards
610 */
611 if (v->abi_version >= SOF_ABI_VER(3, 20, 0)) {
612 hdr.size = sizeof(hdr);
613 hdr.cmd = SOF_IPC_GLB_TRACE_MSG | SOF_IPC_TRACE_DMA_FREE;
614
615 ret = sof_ipc_tx_message_no_reply(sdev->ipc, &hdr, hdr.size);
616 if (ret < 0)
617 dev_err(sdev->dev, "DMA_TRACE_FREE failed with error: %d\n", ret);
618 }
619
620 if (only_stop)
621 goto out;
622
623 ret = sof_dtrace_host_release(sdev);
624 if (ret < 0)
625 dev_err(sdev->dev, "Host dtrace release failed %d\n", ret);
626
627 priv->dtrace_state = SOF_DTRACE_DISABLED;
628
629 out:
630 priv->dtrace_draining = true;
631 wake_up(&priv->trace_sleep);
632 }
633
ipc3_dtrace_suspend(struct snd_sof_dev * sdev,pm_message_t pm_state)634 static void ipc3_dtrace_suspend(struct snd_sof_dev *sdev, pm_message_t pm_state)
635 {
636 ipc3_dtrace_release(sdev, pm_state.event == SOF_DSP_PM_D0);
637 }
638
ipc3_dtrace_resume(struct snd_sof_dev * sdev)639 static int ipc3_dtrace_resume(struct snd_sof_dev *sdev)
640 {
641 return ipc3_dtrace_enable(sdev);
642 }
643
ipc3_dtrace_free(struct snd_sof_dev * sdev)644 static void ipc3_dtrace_free(struct snd_sof_dev *sdev)
645 {
646 struct sof_dtrace_priv *priv = sdev->fw_trace_data;
647
648 /* release trace */
649 ipc3_dtrace_release(sdev, false);
650
651 if (priv->dma_trace_pages) {
652 snd_dma_free_pages(&priv->dmatb);
653 snd_dma_free_pages(&priv->dmatp);
654 priv->dma_trace_pages = 0;
655 }
656 }
657
658 const struct sof_ipc_fw_tracing_ops ipc3_dtrace_ops = {
659 .init = ipc3_dtrace_init,
660 .free = ipc3_dtrace_free,
661 .fw_crashed = ipc3_dtrace_fw_crashed,
662 .suspend = ipc3_dtrace_suspend,
663 .resume = ipc3_dtrace_resume,
664 };
665