sound/soc/intel/atom/sst/sst_stream.c

   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 <[email protected]>
   7  *              Harsha Priya <[email protected]>
   8  *              Dharageswari R <[email protected]>
   9  *              KP Jeeja <[email protected]>
  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
  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  */
 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  */
 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
 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  */
 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  */
 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  */
 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  */
 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  */
 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 }