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

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