1 // SPDX-License-Identifier: GPL-2.0-only
3 * sst_stream.c - Intel SST Driver for audio engine
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 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
14 #include <linux/pci.h>
15 #include <linux/firmware.h>
16 #include <linux/sched.h>
17 #include <linux/delay.h>
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/soc.h>
21 #include <sound/compress_driver.h>
22 #include <asm/platform_sst_audio.h>
23 #include "../sst-mfld-platform.h"
26 int sst_alloc_stream_mrfld(struct intel_sst_drv *sst_drv_ctx, void *params)
28 struct snd_pcm_params *pcm_params;
29 struct snd_sst_params *str_params;
30 struct snd_sst_tstamp fw_tstamp;
31 struct stream_info *str_info;
32 int i, num_ch, str_id;
34 dev_dbg(sst_drv_ctx->dev, "Enter\n");
36 str_params = (struct snd_sst_params *)params;
37 str_id = str_params->stream_id;
38 str_info = get_stream_info(sst_drv_ctx, str_id);
42 memset(&str_info->alloc_param, 0, sizeof(str_info->alloc_param));
43 str_info->alloc_param.operation = str_params->ops;
44 str_info->alloc_param.codec_type = str_params->codec;
45 str_info->alloc_param.sg_count = str_params->aparams.sg_count;
46 str_info->alloc_param.ring_buf_info[0].addr =
47 str_params->aparams.ring_buf_info[0].addr;
48 str_info->alloc_param.ring_buf_info[0].size =
49 str_params->aparams.ring_buf_info[0].size;
50 str_info->alloc_param.frag_size = str_params->aparams.frag_size;
52 memcpy(&str_info->alloc_param.codec_params, &str_params->sparams,
53 sizeof(struct snd_sst_stream_params));
56 * fill channel map params for multichannel support.
57 * Ideally channel map should be received from upper layers
58 * for multichannel support.
59 * Currently hardcoding as per FW reqm.
61 num_ch = sst_get_num_channel(str_params);
62 pcm_params = &str_info->alloc_param.codec_params.uc.pcm_params;
63 for (i = 0; i < 8; i++) {
65 pcm_params->channel_map[i] = i;
67 pcm_params->channel_map[i] = 0xff;
70 sst_drv_ctx->streams[str_id].status = STREAM_INIT;
71 sst_drv_ctx->streams[str_id].prev = STREAM_UN_INIT;
72 sst_drv_ctx->streams[str_id].pipe_id = str_params->device_type;
73 sst_drv_ctx->streams[str_id].task_id = str_params->task;
74 sst_drv_ctx->streams[str_id].num_ch = num_ch;
76 if (sst_drv_ctx->info.lpe_viewpt_rqd)
77 str_info->alloc_param.ts = sst_drv_ctx->info.mailbox_start +
78 sst_drv_ctx->tstamp + (str_id * sizeof(fw_tstamp));
80 str_info->alloc_param.ts = sst_drv_ctx->mailbox_add +
81 sst_drv_ctx->tstamp + (str_id * sizeof(fw_tstamp));
83 dev_dbg(sst_drv_ctx->dev, "alloc tstamp location = 0x%x\n",
84 str_info->alloc_param.ts);
85 dev_dbg(sst_drv_ctx->dev, "assigned pipe id 0x%x to task %d\n",
86 str_info->pipe_id, str_info->task_id);
88 return sst_realloc_stream(sst_drv_ctx, str_id);
92 * sst_realloc_stream - Send msg for (re-)allocating a stream using the
93 * @sst_drv_ctx: intel_sst_drv context pointer
96 * Send a msg for (re-)allocating a stream using the parameters previously
97 * passed to sst_alloc_stream_mrfld() for the same stream ID.
98 * Return: 0 or negative errno value.
100 int sst_realloc_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
102 struct snd_sst_alloc_response *response;
103 struct stream_info *str_info;
107 str_info = get_stream_info(sst_drv_ctx, str_id);
111 dev_dbg(sst_drv_ctx->dev, "Alloc for str %d pipe %#x\n",
112 str_id, str_info->pipe_id);
114 ret = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
115 IPC_IA_ALLOC_STREAM_MRFLD, str_info->pipe_id,
116 sizeof(str_info->alloc_param), &str_info->alloc_param,
117 &data, true, true, false, true);
120 dev_err(sst_drv_ctx->dev, "FW alloc failed ret %d\n", ret);
121 /* alloc failed, so reset the state to uninit */
122 str_info->status = STREAM_UN_INIT;
125 response = (struct snd_sst_alloc_response *)data;
126 ret = response->str_type.result;
129 dev_err(sst_drv_ctx->dev, "FW alloc failed ret %d\n", ret);
130 if (ret == SST_ERR_STREAM_IN_USE) {
131 dev_err(sst_drv_ctx->dev,
132 "FW not in clean state, send free for:%d\n", str_id);
133 sst_free_stream(sst_drv_ctx, str_id);
143 * sst_start_stream - Send msg for a starting stream
144 * @sst_drv_ctx: intel_sst_drv context pointer
147 * This function is called by any function which wants to start
150 int sst_start_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
153 struct stream_info *str_info;
156 dev_dbg(sst_drv_ctx->dev, "sst_start_stream for %d\n", str_id);
157 str_info = get_stream_info(sst_drv_ctx, str_id);
160 if (str_info->status != STREAM_RUNNING)
163 retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
164 IPC_CMD, IPC_IA_START_STREAM_MRFLD, str_info->pipe_id,
165 sizeof(u16), &data, NULL, true, true, true, false);
170 int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
171 struct snd_sst_bytes_v2 *bytes)
172 { struct ipc_post *msg = NULL;
175 struct sst_block *block = NULL;
176 u8 bytes_block = bytes->block;
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);
183 if (sst_create_ipc_msg(&msg, true))
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;
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);
195 block = sst_create_block(sst_drv_ctx, bytes->ipc_msg, pvt_id);
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);
208 ret = sst_wait_timeout(sst_drv_ctx, block);
210 dev_err(sst_drv_ctx->dev, "fw returned err %d\n", ret);
211 sst_free_block(sst_drv_ctx, block);
215 if (bytes->type == SND_SST_BYTES_GET) {
217 * copy the reply and send back
218 * we need to update only sz and payload
221 unsigned char *r = block->data;
223 dev_dbg(sst_drv_ctx->dev, "read back %d bytes",
225 memcpy(bytes->bytes, r, bytes->len);
229 sst_free_block(sst_drv_ctx, block);
231 test_and_clear_bit(pvt_id, &sst_drv_ctx->pvt_id);
236 * sst_pause_stream - Send msg for a pausing stream
237 * @sst_drv_ctx: intel_sst_drv context pointer
240 * This function is called by any function which wants to pause
241 * an already running stream.
243 int sst_pause_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
246 struct stream_info *str_info;
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);
252 if (str_info->status == STREAM_PAUSED)
254 if (str_info->status == STREAM_RUNNING ||
255 str_info->status == STREAM_INIT) {
256 if (str_info->prev == STREAM_UN_INIT)
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);
264 str_info->prev = str_info->status;
265 str_info->status = STREAM_PAUSED;
266 } else if (retval == -SST_ERR_INVALID_STREAM_ID) {
268 mutex_lock(&sst_drv_ctx->sst_lock);
269 sst_clean_stream(str_info);
270 mutex_unlock(&sst_drv_ctx->sst_lock);
274 dev_dbg(sst_drv_ctx->dev, "SST DBG:BADRQC for stream\n");
281 * sst_resume_stream - Send msg for resuming stream
282 * @sst_drv_ctx: intel_sst_drv context pointer
285 * This function is called by any function which wants to resume
286 * an already paused stream.
288 int sst_resume_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
291 struct stream_info *str_info;
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);
297 if (str_info->status == STREAM_RUNNING)
300 if (str_info->resume_status == STREAM_PAUSED &&
301 str_info->resume_prev == STREAM_RUNNING) {
303 * Stream was running before suspend and re-created on resume,
304 * start it to get back to running state.
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) {
314 * Stream was idle before suspend and re-created on resume,
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);
328 if (str_info->prev == STREAM_RUNNING)
329 str_info->status = STREAM_RUNNING;
331 str_info->status = STREAM_INIT;
332 str_info->prev = STREAM_PAUSED;
333 } else if (retval == -SST_ERR_INVALID_STREAM_ID) {
335 mutex_lock(&sst_drv_ctx->sst_lock);
336 sst_clean_stream(str_info);
337 mutex_unlock(&sst_drv_ctx->sst_lock);
341 dev_err(sst_drv_ctx->dev, "SST ERR: BADQRC for stream\n");
349 * sst_drop_stream - Send msg for stopping stream
350 * @sst_drv_ctx: intel_sst_drv context pointer
353 * This function is called by any function which wants to stop
356 int sst_drop_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
359 struct stream_info *str_info;
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);
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);
376 dev_dbg(sst_drv_ctx->dev, "BADQRC for stream, state %x\n",
383 * sst_drain_stream - Send msg for draining stream
384 * @sst_drv_ctx: intel_sst_drv context pointer
386 * @partial_drain: boolean indicating if a gapless transition is taking place
388 * This function is called by any function which wants to drain
391 int sst_drain_stream(struct intel_sst_drv *sst_drv_ctx,
392 int str_id, bool partial_drain)
395 struct stream_info *str_info;
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);
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",
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);
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
422 * sst_free_stream - Frees a stream
423 * @sst_drv_ctx: intel_sst_drv context pointer
426 * This function is called by any function which wants to free
429 int sst_free_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
432 struct stream_info *str_info;
434 dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_free_stream for %d\n", str_id);
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);
441 mutex_unlock(&sst_drv_ctx->sst_lock);
442 str_info = get_stream_info(sst_drv_ctx, str_id);
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);
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);
458 dev_dbg(sst_drv_ctx->dev, "sst: wait for free returned %d\n",
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");
465 mutex_unlock(&str_info->lock);
467 dev_dbg(sst_drv_ctx->dev, "SST DBG:BADQRC for stream\n");