1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * sst_stream.c - Intel SST Driver for audio engine
4 *
5 * Copyright (C) 2008-14 Intel Corp
6 * Authors: Vinod Koul <vinod.koul@intel.com>
7 * Harsha Priya <priya.harsha@intel.com>
8 * Dharageswari R <dharageswari.r@intel.com>
9 * KP Jeeja <jeeja.kp@intel.com>
10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11 *
12 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
13 */
14 #include <linux/pci.h>
15 #include <linux/firmware.h>
16 #include <linux/sched.h>
17 #include <linux/delay.h>
18 #include <linux/pm_runtime.h>
19 #include <sound/core.h>
20 #include <sound/pcm.h>
21 #include <sound/soc.h>
22 #include <sound/compress_driver.h>
23 #include <asm/platform_sst_audio.h>
24 #include "../sst-mfld-platform.h"
25 #include "sst.h"
26
sst_alloc_stream_mrfld(struct intel_sst_drv * sst_drv_ctx,void * params)27 int sst_alloc_stream_mrfld(struct intel_sst_drv *sst_drv_ctx, void *params)
28 {
29 struct snd_pcm_params *pcm_params;
30 struct snd_sst_params *str_params;
31 struct snd_sst_tstamp fw_tstamp;
32 struct stream_info *str_info;
33 int i, num_ch, str_id;
34
35 dev_dbg(sst_drv_ctx->dev, "Enter\n");
36
37 str_params = (struct snd_sst_params *)params;
38 str_id = str_params->stream_id;
39 str_info = get_stream_info(sst_drv_ctx, str_id);
40 if (!str_info)
41 return -EINVAL;
42
43 memset(&str_info->alloc_param, 0, sizeof(str_info->alloc_param));
44 str_info->alloc_param.operation = str_params->ops;
45 str_info->alloc_param.codec_type = str_params->codec;
46 str_info->alloc_param.sg_count = str_params->aparams.sg_count;
47 str_info->alloc_param.ring_buf_info[0].addr =
48 str_params->aparams.ring_buf_info[0].addr;
49 str_info->alloc_param.ring_buf_info[0].size =
50 str_params->aparams.ring_buf_info[0].size;
51 str_info->alloc_param.frag_size = str_params->aparams.frag_size;
52
53 memcpy(&str_info->alloc_param.codec_params, &str_params->sparams,
54 sizeof(struct snd_sst_stream_params));
55
56 /*
57 * fill channel map params for multichannel support.
58 * Ideally channel map should be received from upper layers
59 * for multichannel support.
60 * Currently hardcoding as per FW reqm.
61 */
62 num_ch = sst_get_num_channel(str_params);
63 pcm_params = &str_info->alloc_param.codec_params.uc.pcm_params;
64 for (i = 0; i < 8; i++) {
65 if (i < num_ch)
66 pcm_params->channel_map[i] = i;
67 else
68 pcm_params->channel_map[i] = 0xff;
69 }
70
71 sst_drv_ctx->streams[str_id].status = STREAM_INIT;
72 sst_drv_ctx->streams[str_id].prev = STREAM_UN_INIT;
73 sst_drv_ctx->streams[str_id].pipe_id = str_params->device_type;
74 sst_drv_ctx->streams[str_id].task_id = str_params->task;
75 sst_drv_ctx->streams[str_id].num_ch = num_ch;
76
77 if (sst_drv_ctx->info.lpe_viewpt_rqd)
78 str_info->alloc_param.ts = sst_drv_ctx->info.mailbox_start +
79 sst_drv_ctx->tstamp + (str_id * sizeof(fw_tstamp));
80 else
81 str_info->alloc_param.ts = sst_drv_ctx->mailbox_add +
82 sst_drv_ctx->tstamp + (str_id * sizeof(fw_tstamp));
83
84 dev_dbg(sst_drv_ctx->dev, "alloc tstamp location = 0x%x\n",
85 str_info->alloc_param.ts);
86 dev_dbg(sst_drv_ctx->dev, "assigned pipe id 0x%x to task %d\n",
87 str_info->pipe_id, str_info->task_id);
88
89 return sst_realloc_stream(sst_drv_ctx, str_id);
90 }
91
92 /**
93 * sst_realloc_stream - Send msg for (re-)allocating a stream using the
94 * @sst_drv_ctx: intel_sst_drv context pointer
95 * @str_id: stream ID
96 *
97 * Send a msg for (re-)allocating a stream using the parameters previously
98 * passed to sst_alloc_stream_mrfld() for the same stream ID.
99 * Return: 0 or negative errno value.
100 */
sst_realloc_stream(struct intel_sst_drv * sst_drv_ctx,int str_id)101 int sst_realloc_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
102 {
103 struct snd_sst_alloc_response *response;
104 struct stream_info *str_info;
105 void *data = NULL;
106 int ret;
107
108 str_info = get_stream_info(sst_drv_ctx, str_id);
109 if (!str_info)
110 return -EINVAL;
111
112 dev_dbg(sst_drv_ctx->dev, "Alloc for str %d pipe %#x\n",
113 str_id, str_info->pipe_id);
114
115 ret = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
116 IPC_IA_ALLOC_STREAM_MRFLD, str_info->pipe_id,
117 sizeof(str_info->alloc_param), &str_info->alloc_param,
118 &data, true, true, false, true);
119
120 if (ret < 0) {
121 dev_err(sst_drv_ctx->dev, "FW alloc failed ret %d\n", ret);
122 /* alloc failed, so reset the state to uninit */
123 str_info->status = STREAM_UN_INIT;
124 str_id = ret;
125 } else if (data) {
126 response = (struct snd_sst_alloc_response *)data;
127 ret = response->str_type.result;
128 if (!ret)
129 goto out;
130 dev_err(sst_drv_ctx->dev, "FW alloc failed ret %d\n", ret);
131 if (ret == SST_ERR_STREAM_IN_USE) {
132 dev_err(sst_drv_ctx->dev,
133 "FW not in clean state, send free for:%d\n", str_id);
134 sst_free_stream(sst_drv_ctx, str_id);
135 }
136 str_id = -ret;
137 }
138 out:
139 kfree(data);
140 return str_id;
141 }
142
143 /**
144 * sst_start_stream - Send msg for a starting stream
145 * @sst_drv_ctx: intel_sst_drv context pointer
146 * @str_id: stream ID
147 *
148 * This function is called by any function which wants to start
149 * a stream.
150 */
sst_start_stream(struct intel_sst_drv * sst_drv_ctx,int str_id)151 int sst_start_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
152 {
153 int retval = 0;
154 struct stream_info *str_info;
155 u16 data = 0;
156
157 dev_dbg(sst_drv_ctx->dev, "sst_start_stream for %d\n", str_id);
158 str_info = get_stream_info(sst_drv_ctx, str_id);
159 if (!str_info)
160 return -EINVAL;
161 if (str_info->status != STREAM_RUNNING)
162 return -EBADRQC;
163
164 retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
165 IPC_CMD, IPC_IA_START_STREAM_MRFLD, str_info->pipe_id,
166 sizeof(u16), &data, NULL, true, true, true, false);
167
168 return retval;
169 }
170
sst_send_byte_stream_mrfld(struct intel_sst_drv * sst_drv_ctx,struct snd_sst_bytes_v2 * bytes)171 int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
172 struct snd_sst_bytes_v2 *bytes)
173 { struct ipc_post *msg = NULL;
174 u32 length;
175 int pvt_id, ret = 0;
176 struct sst_block *block = NULL;
177
178 dev_dbg(sst_drv_ctx->dev,
179 "type:%u ipc_msg:%u block:%u task_id:%u pipe: %#x length:%#x\n",
180 bytes->type, bytes->ipc_msg, bytes->block, bytes->task_id,
181 bytes->pipe_id, bytes->len);
182
183 if (sst_create_ipc_msg(&msg, true))
184 return -ENOMEM;
185
186 pvt_id = sst_assign_pvt_id(sst_drv_ctx);
187 sst_fill_header_mrfld(&msg->mrfld_header, bytes->ipc_msg,
188 bytes->task_id, 1, pvt_id);
189 msg->mrfld_header.p.header_high.part.res_rqd = bytes->block;
190 length = bytes->len;
191 msg->mrfld_header.p.header_low_payload = length;
192 dev_dbg(sst_drv_ctx->dev, "length is %d\n", length);
193 memcpy(msg->mailbox_data, &bytes->bytes, bytes->len);
194 if (bytes->block) {
195 block = sst_create_block(sst_drv_ctx, bytes->ipc_msg, pvt_id);
196 if (block == NULL) {
197 kfree(msg);
198 ret = -ENOMEM;
199 goto out;
200 }
201 }
202
203 sst_add_to_dispatch_list_and_post(sst_drv_ctx, msg);
204 dev_dbg(sst_drv_ctx->dev, "msg->mrfld_header.p.header_low_payload:%d",
205 msg->mrfld_header.p.header_low_payload);
206
207 if (bytes->block) {
208 ret = sst_wait_timeout(sst_drv_ctx, block);
209 if (ret) {
210 dev_err(sst_drv_ctx->dev, "fw returned err %d\n", ret);
211 sst_free_block(sst_drv_ctx, block);
212 goto out;
213 }
214 }
215 if (bytes->type == SND_SST_BYTES_GET) {
216 /*
217 * copy the reply and send back
218 * we need to update only sz and payload
219 */
220 if (bytes->block) {
221 unsigned char *r = block->data;
222
223 dev_dbg(sst_drv_ctx->dev, "read back %d bytes",
224 bytes->len);
225 memcpy(bytes->bytes, r, bytes->len);
226 }
227 }
228 if (bytes->block)
229 sst_free_block(sst_drv_ctx, block);
230 out:
231 test_and_clear_bit(pvt_id, &sst_drv_ctx->pvt_id);
232 return ret;
233 }
234
235 /**
236 * sst_pause_stream - Send msg for a pausing stream
237 * @sst_drv_ctx: intel_sst_drv context pointer
238 * @str_id: stream ID
239 *
240 * This function is called by any function which wants to pause
241 * an already running stream.
242 */
sst_pause_stream(struct intel_sst_drv * sst_drv_ctx,int str_id)243 int sst_pause_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
244 {
245 int retval = 0;
246 struct stream_info *str_info;
247
248 dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_pause_stream for %d\n", str_id);
249 str_info = get_stream_info(sst_drv_ctx, str_id);
250 if (!str_info)
251 return -EINVAL;
252 if (str_info->status == STREAM_PAUSED)
253 return 0;
254 if (str_info->status == STREAM_RUNNING ||
255 str_info->status == STREAM_INIT) {
256 if (str_info->prev == STREAM_UN_INIT)
257 return -EBADRQC;
258
259 retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
260 IPC_IA_PAUSE_STREAM_MRFLD, str_info->pipe_id,
261 0, NULL, NULL, true, true, false, true);
262
263 if (retval == 0) {
264 str_info->prev = str_info->status;
265 str_info->status = STREAM_PAUSED;
266 } else if (retval == -SST_ERR_INVALID_STREAM_ID) {
267 retval = -EINVAL;
268 mutex_lock(&sst_drv_ctx->sst_lock);
269 sst_clean_stream(str_info);
270 mutex_unlock(&sst_drv_ctx->sst_lock);
271 }
272 } else {
273 retval = -EBADRQC;
274 dev_dbg(sst_drv_ctx->dev, "SST DBG:BADRQC for stream\n");
275 }
276
277 return retval;
278 }
279
280 /**
281 * sst_resume_stream - Send msg for resuming stream
282 * @sst_drv_ctx: intel_sst_drv context pointer
283 * @str_id: stream ID
284 *
285 * This function is called by any function which wants to resume
286 * an already paused stream.
287 */
sst_resume_stream(struct intel_sst_drv * sst_drv_ctx,int str_id)288 int sst_resume_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
289 {
290 int retval = 0;
291 struct stream_info *str_info;
292
293 dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_resume_stream for %d\n", str_id);
294 str_info = get_stream_info(sst_drv_ctx, str_id);
295 if (!str_info)
296 return -EINVAL;
297 if (str_info->status == STREAM_RUNNING)
298 return 0;
299
300 if (str_info->resume_status == STREAM_PAUSED &&
301 str_info->resume_prev == STREAM_RUNNING) {
302 /*
303 * Stream was running before suspend and re-created on resume,
304 * start it to get back to running state.
305 */
306 dev_dbg(sst_drv_ctx->dev, "restart recreated stream after resume\n");
307 str_info->status = STREAM_RUNNING;
308 str_info->prev = STREAM_PAUSED;
309 retval = sst_start_stream(sst_drv_ctx, str_id);
310 str_info->resume_status = STREAM_UN_INIT;
311 } else if (str_info->resume_status == STREAM_PAUSED &&
312 str_info->resume_prev == STREAM_INIT) {
313 /*
314 * Stream was idle before suspend and re-created on resume,
315 * keep it as is.
316 */
317 dev_dbg(sst_drv_ctx->dev, "leaving recreated stream idle after resume\n");
318 str_info->status = STREAM_INIT;
319 str_info->prev = STREAM_PAUSED;
320 str_info->resume_status = STREAM_UN_INIT;
321 } else if (str_info->status == STREAM_PAUSED) {
322 retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
323 IPC_CMD, IPC_IA_RESUME_STREAM_MRFLD,
324 str_info->pipe_id, 0, NULL, NULL,
325 true, true, false, true);
326
327 if (!retval) {
328 if (str_info->prev == STREAM_RUNNING)
329 str_info->status = STREAM_RUNNING;
330 else
331 str_info->status = STREAM_INIT;
332 str_info->prev = STREAM_PAUSED;
333 } else if (retval == -SST_ERR_INVALID_STREAM_ID) {
334 retval = -EINVAL;
335 mutex_lock(&sst_drv_ctx->sst_lock);
336 sst_clean_stream(str_info);
337 mutex_unlock(&sst_drv_ctx->sst_lock);
338 }
339 } else {
340 retval = -EBADRQC;
341 dev_err(sst_drv_ctx->dev, "SST ERR: BADQRC for stream\n");
342 }
343
344 return retval;
345 }
346
347
348 /**
349 * sst_drop_stream - Send msg for stopping stream
350 * @sst_drv_ctx: intel_sst_drv context pointer
351 * @str_id: stream ID
352 *
353 * This function is called by any function which wants to stop
354 * a stream.
355 */
sst_drop_stream(struct intel_sst_drv * sst_drv_ctx,int str_id)356 int sst_drop_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
357 {
358 int retval = 0;
359 struct stream_info *str_info;
360
361 dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_drop_stream for %d\n", str_id);
362 str_info = get_stream_info(sst_drv_ctx, str_id);
363 if (!str_info)
364 return -EINVAL;
365
366 if (str_info->status != STREAM_UN_INIT) {
367 str_info->prev = STREAM_UN_INIT;
368 str_info->status = STREAM_INIT;
369 str_info->cumm_bytes = 0;
370 retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
371 IPC_CMD, IPC_IA_DROP_STREAM_MRFLD,
372 str_info->pipe_id, 0, NULL, NULL,
373 true, true, true, false);
374 } else {
375 retval = -EBADRQC;
376 dev_dbg(sst_drv_ctx->dev, "BADQRC for stream, state %x\n",
377 str_info->status);
378 }
379 return retval;
380 }
381
382 /**
383 * sst_drain_stream - Send msg for draining stream
384 * @sst_drv_ctx: intel_sst_drv context pointer
385 * @str_id: stream ID
386 * @partial_drain: boolean indicating if a gapless transition is taking place
387 *
388 * This function is called by any function which wants to drain
389 * a stream.
390 */
sst_drain_stream(struct intel_sst_drv * sst_drv_ctx,int str_id,bool partial_drain)391 int sst_drain_stream(struct intel_sst_drv *sst_drv_ctx,
392 int str_id, bool partial_drain)
393 {
394 int retval = 0;
395 struct stream_info *str_info;
396
397 dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_drain_stream for %d\n", str_id);
398 str_info = get_stream_info(sst_drv_ctx, str_id);
399 if (!str_info)
400 return -EINVAL;
401 if (str_info->status != STREAM_RUNNING &&
402 str_info->status != STREAM_INIT &&
403 str_info->status != STREAM_PAUSED) {
404 dev_err(sst_drv_ctx->dev, "SST ERR: BADQRC for stream = %d\n",
405 str_info->status);
406 return -EBADRQC;
407 }
408
409 retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
410 IPC_IA_DRAIN_STREAM_MRFLD, str_info->pipe_id,
411 sizeof(u8), &partial_drain, NULL, true, true, false, false);
412 /*
413 * with new non blocked drain implementation in core we dont need to
414 * wait for respsonse, and need to only invoke callback for drain
415 * complete
416 */
417
418 return retval;
419 }
420
421 /**
422 * sst_free_stream - Frees a stream
423 * @sst_drv_ctx: intel_sst_drv context pointer
424 * @str_id: stream ID
425 *
426 * This function is called by any function which wants to free
427 * a stream.
428 */
sst_free_stream(struct intel_sst_drv * sst_drv_ctx,int str_id)429 int sst_free_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
430 {
431 int retval = 0;
432 struct stream_info *str_info;
433
434 dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_free_stream for %d\n", str_id);
435
436 mutex_lock(&sst_drv_ctx->sst_lock);
437 if (sst_drv_ctx->sst_state == SST_RESET) {
438 mutex_unlock(&sst_drv_ctx->sst_lock);
439 return -ENODEV;
440 }
441 mutex_unlock(&sst_drv_ctx->sst_lock);
442 str_info = get_stream_info(sst_drv_ctx, str_id);
443 if (!str_info)
444 return -EINVAL;
445
446 mutex_lock(&str_info->lock);
447 if (str_info->status != STREAM_UN_INIT) {
448 str_info->prev = str_info->status;
449 str_info->status = STREAM_UN_INIT;
450 mutex_unlock(&str_info->lock);
451
452 dev_dbg(sst_drv_ctx->dev, "Free for str %d pipe %#x\n",
453 str_id, str_info->pipe_id);
454 retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
455 IPC_IA_FREE_STREAM_MRFLD, str_info->pipe_id, 0,
456 NULL, NULL, true, true, false, true);
457
458 dev_dbg(sst_drv_ctx->dev, "sst: wait for free returned %d\n",
459 retval);
460 mutex_lock(&sst_drv_ctx->sst_lock);
461 sst_clean_stream(str_info);
462 mutex_unlock(&sst_drv_ctx->sst_lock);
463 dev_dbg(sst_drv_ctx->dev, "SST DBG:Stream freed\n");
464 } else {
465 mutex_unlock(&str_info->lock);
466 retval = -EBADRQC;
467 dev_dbg(sst_drv_ctx->dev, "SST DBG:BADQRC for stream\n");
468 }
469
470 return retval;
471 }
472