Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 1 | /* |
| 2 | * intel_sst_stream.c - Intel SST Driver for audio engine |
| 3 | * |
| 4 | * Copyright (C) 2008-10 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 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 23 | * |
| 24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 25 | * |
| 26 | * This file contains the stream operations of SST driver |
| 27 | */ |
| 28 | |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 30 | |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 31 | #include <linux/pci.h> |
| 32 | #include <linux/firmware.h> |
| 33 | #include <linux/sched.h> |
Vinod Koul | afe9194 | 2011-05-03 17:31:49 +0100 | [diff] [blame] | 34 | #include <linux/delay.h> |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 35 | #include "intel_sst_ioctl.h" |
| 36 | #include "intel_sst.h" |
| 37 | #include "intel_sst_fw_ipc.h" |
| 38 | #include "intel_sst_common.h" |
| 39 | |
| 40 | /* |
| 41 | * sst_check_device_type - Check the medfield device type |
| 42 | * |
| 43 | * @device: Device to be checked |
| 44 | * @num_ch: Number of channels queried |
| 45 | * @pcm_slot: slot to be enabled for this device |
| 46 | * |
| 47 | * This checks the deivce against the map and calculates pcm_slot value |
| 48 | */ |
| 49 | int sst_check_device_type(u32 device, u32 num_chan, u32 *pcm_slot) |
| 50 | { |
Sitanshu Nanavati | eb02c70 | 2011-05-03 17:33:01 +0100 | [diff] [blame] | 51 | if (device >= MAX_NUM_STREAMS_MFLD) { |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 52 | pr_debug("device type invalid %d\n", device); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 53 | return -EINVAL; |
| 54 | } |
| 55 | if (sst_drv_ctx->streams[device].status == STREAM_UN_INIT) { |
| 56 | if (device == SND_SST_DEVICE_VIBRA && num_chan == 1) |
| 57 | *pcm_slot = 0x10; |
| 58 | else if (device == SND_SST_DEVICE_HAPTIC && num_chan == 1) |
| 59 | *pcm_slot = 0x20; |
| 60 | else if (device == SND_SST_DEVICE_IHF && num_chan == 1) |
| 61 | *pcm_slot = 0x04; |
| 62 | else if (device == SND_SST_DEVICE_IHF && num_chan == 2) |
| 63 | *pcm_slot = 0x0C; |
| 64 | else if (device == SND_SST_DEVICE_HEADSET && num_chan == 1) |
| 65 | *pcm_slot = 0x01; |
| 66 | else if (device == SND_SST_DEVICE_HEADSET && num_chan == 2) |
| 67 | *pcm_slot = 0x03; |
| 68 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 1) |
| 69 | *pcm_slot = 0x01; |
| 70 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 2) |
| 71 | *pcm_slot = 0x03; |
| 72 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 3) |
| 73 | *pcm_slot = 0x07; |
| 74 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 4) |
| 75 | *pcm_slot = 0x0F; |
Dharageswari R | 5572a44 | 2011-05-03 17:32:38 +0100 | [diff] [blame] | 76 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan > 4) |
| 77 | *pcm_slot = 0x1F; |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 78 | else { |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 79 | pr_debug("No condition satisfied.. ret err\n"); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 80 | return -EINVAL; |
| 81 | } |
| 82 | } else { |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 83 | pr_debug("this stream state is not uni-init, is %d\n", |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 84 | sst_drv_ctx->streams[device].status); |
| 85 | return -EBADRQC; |
| 86 | } |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 87 | pr_debug("returning slot %x\n", *pcm_slot); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 88 | return 0; |
| 89 | } |
| 90 | /** |
| 91 | * get_mrst_stream_id - gets a new stream id for use |
| 92 | * |
| 93 | * This functions searches the current streams and allocated an empty stream |
| 94 | * lock stream_lock required to be held before calling this |
| 95 | */ |
| 96 | static unsigned int get_mrst_stream_id(void) |
| 97 | { |
| 98 | int i; |
| 99 | |
| 100 | for (i = 1; i <= MAX_NUM_STREAMS_MRST; i++) { |
| 101 | if (sst_drv_ctx->streams[i].status == STREAM_UN_INIT) |
| 102 | return i; |
| 103 | } |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 104 | pr_debug("Didn't find empty stream for mrst\n"); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 105 | return -EBUSY; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * sst_alloc_stream - Send msg for a new stream ID |
| 110 | * |
| 111 | * @params: stream params |
| 112 | * @stream_ops: operation of stream PB/capture |
| 113 | * @codec: codec for stream |
| 114 | * @device: device stream to be allocated for |
| 115 | * |
| 116 | * This function is called by any function which wants to start |
| 117 | * a new stream. This also check if a stream exists which is idle |
| 118 | * it initializes idle stream id to this request |
| 119 | */ |
| 120 | int sst_alloc_stream(char *params, unsigned int stream_ops, |
| 121 | u8 codec, unsigned int device) |
| 122 | { |
| 123 | struct ipc_post *msg = NULL; |
| 124 | struct snd_sst_alloc_params alloc_param; |
Vasiliy Kulikov | 7915c0d | 2010-10-10 21:28:47 +0400 | [diff] [blame] | 125 | unsigned int pcm_slot = 0, num_ch; |
| 126 | int str_id; |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 127 | struct snd_sst_stream_params *sparams; |
| 128 | struct stream_info *str_info; |
| 129 | |
| 130 | pr_debug("SST DBG:entering sst_alloc_stream\n"); |
| 131 | pr_debug("SST DBG:%d %d %d\n", stream_ops, codec, device); |
| 132 | |
| 133 | BUG_ON(!params); |
| 134 | sparams = (struct snd_sst_stream_params *)params; |
| 135 | num_ch = sparams->uc.pcm_params.num_chan; |
| 136 | /*check the device type*/ |
| 137 | if (sst_drv_ctx->pci_id == SST_MFLD_PCI_ID) { |
| 138 | if (sst_check_device_type(device, num_ch, &pcm_slot)) |
| 139 | return -EINVAL; |
| 140 | mutex_lock(&sst_drv_ctx->stream_lock); |
| 141 | str_id = device; |
| 142 | mutex_unlock(&sst_drv_ctx->stream_lock); |
| 143 | pr_debug("SST_DBG: slot %x\n", pcm_slot); |
| 144 | } else { |
| 145 | mutex_lock(&sst_drv_ctx->stream_lock); |
| 146 | str_id = get_mrst_stream_id(); |
| 147 | mutex_unlock(&sst_drv_ctx->stream_lock); |
| 148 | if (str_id <= 0) |
| 149 | return -EBUSY; |
| 150 | } |
| 151 | /*allocate device type context*/ |
| 152 | sst_init_stream(&sst_drv_ctx->streams[str_id], codec, |
| 153 | str_id, stream_ops, pcm_slot, device); |
| 154 | /* send msg to FW to allocate a stream */ |
| 155 | if (sst_create_large_msg(&msg)) |
| 156 | return -ENOMEM; |
| 157 | |
| 158 | sst_fill_header(&msg->header, IPC_IA_ALLOC_STREAM, 1, str_id); |
| 159 | msg->header.part.data = sizeof(alloc_param) + sizeof(u32); |
| 160 | alloc_param.str_type.codec_type = codec; |
| 161 | alloc_param.str_type.str_type = SST_STREAM_TYPE_MUSIC; |
| 162 | alloc_param.str_type.operation = stream_ops; |
| 163 | alloc_param.str_type.protected_str = 0; /* non drm */ |
| 164 | alloc_param.str_type.time_slots = pcm_slot; |
| 165 | alloc_param.str_type.result = alloc_param.str_type.reserved = 0; |
| 166 | memcpy(&alloc_param.stream_params, params, |
| 167 | sizeof(struct snd_sst_stream_params)); |
| 168 | |
| 169 | memcpy(msg->mailbox_data, &msg->header, sizeof(u32)); |
| 170 | memcpy(msg->mailbox_data + sizeof(u32), &alloc_param, |
| 171 | sizeof(alloc_param)); |
| 172 | str_info = &sst_drv_ctx->streams[str_id]; |
| 173 | str_info->ctrl_blk.condition = false; |
| 174 | str_info->ctrl_blk.ret_code = 0; |
| 175 | str_info->ctrl_blk.on = true; |
| 176 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 177 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); |
| 178 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 179 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 180 | pr_debug("SST DBG:alloc stream done\n"); |
| 181 | return str_id; |
| 182 | } |
| 183 | |
| 184 | |
| 185 | /* |
| 186 | * sst_alloc_stream_response - process alloc reply |
| 187 | * |
| 188 | * @str_id: stream id for which the stream has been allocated |
| 189 | * @resp the stream response from firware |
| 190 | * |
| 191 | * This function is called by firmware as a response to stream allcoation |
| 192 | * request |
| 193 | */ |
| 194 | int sst_alloc_stream_response(unsigned int str_id, |
| 195 | struct snd_sst_alloc_response *resp) |
| 196 | { |
| 197 | int retval = 0; |
| 198 | struct stream_info *str_info; |
| 199 | struct snd_sst_lib_download *lib_dnld; |
| 200 | |
| 201 | pr_debug("SST DEBUG: stream number given = %d\n", str_id); |
| 202 | str_info = &sst_drv_ctx->streams[str_id]; |
| 203 | if (resp->str_type.result == SST_LIB_ERR_LIB_DNLD_REQUIRED) { |
| 204 | lib_dnld = kzalloc(sizeof(*lib_dnld), GFP_KERNEL); |
| 205 | memcpy(lib_dnld, &resp->lib_dnld, sizeof(*lib_dnld)); |
| 206 | } else |
| 207 | lib_dnld = NULL; |
| 208 | if (str_info->ctrl_blk.on == true) { |
| 209 | str_info->ctrl_blk.on = false; |
| 210 | str_info->ctrl_blk.data = lib_dnld; |
| 211 | str_info->ctrl_blk.condition = true; |
| 212 | str_info->ctrl_blk.ret_code = resp->str_type.result; |
| 213 | pr_debug("SST DEBUG: sst_alloc_stream_response: waking up.\n"); |
| 214 | wake_up(&sst_drv_ctx->wait_queue); |
| 215 | } |
| 216 | return retval; |
| 217 | } |
| 218 | |
| 219 | |
| 220 | /** |
| 221 | * sst_get_fw_info - Send msg to query for firmware configurations |
| 222 | * @info: out param that holds the firmare configurations |
| 223 | * |
| 224 | * This function is called when the firmware configurations are queiried for |
| 225 | */ |
| 226 | int sst_get_fw_info(struct snd_sst_fw_info *info) |
| 227 | { |
| 228 | int retval = 0; |
| 229 | struct ipc_post *msg = NULL; |
| 230 | |
| 231 | pr_debug("SST DBG:sst_get_fw_info called\n"); |
| 232 | |
| 233 | if (sst_create_short_msg(&msg)) { |
| 234 | pr_err("SST ERR: message creation failed\n"); |
| 235 | return -ENOMEM; |
| 236 | } |
| 237 | |
| 238 | sst_fill_header(&msg->header, IPC_IA_GET_FW_INFO, 0, 0); |
| 239 | sst_drv_ctx->fw_info_blk.condition = false; |
| 240 | sst_drv_ctx->fw_info_blk.ret_code = 0; |
| 241 | sst_drv_ctx->fw_info_blk.on = true; |
| 242 | sst_drv_ctx->fw_info_blk.data = info; |
| 243 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 244 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); |
| 245 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 246 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 247 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, |
| 248 | &sst_drv_ctx->fw_info_blk, SST_BLOCK_TIMEOUT); |
| 249 | if (retval) { |
| 250 | pr_err("SST ERR: error in fw_info = %d\n", retval); |
| 251 | retval = -EIO; |
| 252 | } |
| 253 | return retval; |
| 254 | } |
| 255 | |
| 256 | |
| 257 | /** |
| 258 | * sst_pause_stream - Send msg for a pausing stream |
| 259 | * @str_id: stream ID |
| 260 | * |
| 261 | * This function is called by any function which wants to pause |
| 262 | * an already running stream. |
| 263 | */ |
| 264 | int sst_start_stream(int str_id) |
| 265 | { |
| 266 | int retval = 0; |
| 267 | struct ipc_post *msg = NULL; |
| 268 | struct stream_info *str_info; |
| 269 | |
| 270 | pr_debug("sst_start_stream for %d\n", str_id); |
| 271 | retval = sst_validate_strid(str_id); |
| 272 | if (retval) |
| 273 | return retval; |
| 274 | str_info = &sst_drv_ctx->streams[str_id]; |
| 275 | if (str_info->status != STREAM_INIT) |
| 276 | return -EBADRQC; |
| 277 | if (sst_create_short_msg(&msg)) |
| 278 | return -ENOMEM; |
| 279 | |
| 280 | sst_fill_header(&msg->header, IPC_IA_START_STREAM, 0, str_id); |
| 281 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 282 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); |
| 283 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 284 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 285 | return retval; |
| 286 | } |
| 287 | |
| 288 | /* |
| 289 | * sst_pause_stream - Send msg for a pausing stream |
| 290 | * @str_id: stream ID |
| 291 | * |
| 292 | * This function is called by any function which wants to pause |
| 293 | * an already running stream. |
| 294 | */ |
| 295 | int sst_pause_stream(int str_id) |
| 296 | { |
| 297 | int retval = 0; |
| 298 | struct ipc_post *msg = NULL; |
| 299 | struct stream_info *str_info; |
| 300 | |
| 301 | pr_debug("SST DBG:sst_pause_stream for %d\n", str_id); |
| 302 | retval = sst_validate_strid(str_id); |
| 303 | if (retval) |
| 304 | return retval; |
| 305 | str_info = &sst_drv_ctx->streams[str_id]; |
| 306 | if (str_info->status == STREAM_PAUSED) |
| 307 | return 0; |
| 308 | if (str_info->status == STREAM_RUNNING || |
| 309 | str_info->status == STREAM_INIT) { |
| 310 | if (str_info->prev == STREAM_UN_INIT) |
| 311 | return -EBADRQC; |
| 312 | if (str_info->ctrl_blk.on == true) { |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 313 | pr_err("SST ERR: control path is in use\n"); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 314 | return -EINVAL; |
| 315 | } |
| 316 | if (sst_create_short_msg(&msg)) |
| 317 | return -ENOMEM; |
| 318 | |
| 319 | sst_fill_header(&msg->header, IPC_IA_PAUSE_STREAM, 0, str_id); |
| 320 | str_info->ctrl_blk.condition = false; |
| 321 | str_info->ctrl_blk.ret_code = 0; |
| 322 | str_info->ctrl_blk.on = true; |
| 323 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 324 | list_add_tail(&msg->node, |
| 325 | &sst_drv_ctx->ipc_dispatch_list); |
| 326 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 327 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 328 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, |
| 329 | &str_info->ctrl_blk, SST_BLOCK_TIMEOUT); |
| 330 | if (retval == 0) { |
| 331 | str_info->prev = str_info->status; |
| 332 | str_info->status = STREAM_PAUSED; |
| 333 | } else if (retval == SST_ERR_INVALID_STREAM_ID) { |
| 334 | retval = -EINVAL; |
| 335 | mutex_lock(&sst_drv_ctx->stream_lock); |
| 336 | sst_clean_stream(str_info); |
| 337 | mutex_unlock(&sst_drv_ctx->stream_lock); |
| 338 | } |
| 339 | } else { |
| 340 | retval = -EBADRQC; |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 341 | pr_err("SST ERR: BADQRC for stream\n"); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 342 | } |
| 343 | |
| 344 | return retval; |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * sst_resume_stream - Send msg for resuming stream |
| 349 | * @str_id: stream ID |
| 350 | * |
| 351 | * This function is called by any function which wants to resume |
| 352 | * an already paused stream. |
| 353 | */ |
| 354 | int sst_resume_stream(int str_id) |
| 355 | { |
| 356 | int retval = 0; |
| 357 | struct ipc_post *msg = NULL; |
| 358 | struct stream_info *str_info; |
| 359 | |
| 360 | pr_debug("SST DBG:sst_resume_stream for %d\n", str_id); |
| 361 | retval = sst_validate_strid(str_id); |
| 362 | if (retval) |
| 363 | return retval; |
| 364 | str_info = &sst_drv_ctx->streams[str_id]; |
| 365 | if (str_info->status == STREAM_RUNNING) |
| 366 | return 0; |
| 367 | if (str_info->status == STREAM_PAUSED) { |
| 368 | if (str_info->ctrl_blk.on == true) { |
| 369 | pr_err("SST ERR: control path in use\n"); |
| 370 | return -EINVAL; |
| 371 | } |
| 372 | if (sst_create_short_msg(&msg)) { |
| 373 | pr_err("SST ERR: mem allocation failed\n"); |
| 374 | return -ENOMEM; |
| 375 | } |
| 376 | sst_fill_header(&msg->header, IPC_IA_RESUME_STREAM, 0, str_id); |
| 377 | str_info->ctrl_blk.condition = false; |
| 378 | str_info->ctrl_blk.ret_code = 0; |
| 379 | str_info->ctrl_blk.on = true; |
| 380 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 381 | list_add_tail(&msg->node, |
| 382 | &sst_drv_ctx->ipc_dispatch_list); |
| 383 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 384 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 385 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, |
| 386 | &str_info->ctrl_blk, SST_BLOCK_TIMEOUT); |
| 387 | if (!retval) { |
| 388 | if (str_info->prev == STREAM_RUNNING) |
| 389 | str_info->status = STREAM_RUNNING; |
| 390 | else |
| 391 | str_info->status = STREAM_INIT; |
| 392 | str_info->prev = STREAM_PAUSED; |
| 393 | } else if (retval == -SST_ERR_INVALID_STREAM_ID) { |
| 394 | retval = -EINVAL; |
| 395 | mutex_lock(&sst_drv_ctx->stream_lock); |
| 396 | sst_clean_stream(str_info); |
| 397 | mutex_unlock(&sst_drv_ctx->stream_lock); |
| 398 | } |
| 399 | } else { |
| 400 | retval = -EBADRQC; |
| 401 | pr_err("SST ERR: BADQRC for stream\n"); |
| 402 | } |
| 403 | |
| 404 | return retval; |
| 405 | } |
| 406 | |
| 407 | |
| 408 | /** |
| 409 | * sst_drop_stream - Send msg for stopping stream |
| 410 | * @str_id: stream ID |
| 411 | * |
| 412 | * This function is called by any function which wants to stop |
| 413 | * a stream. |
| 414 | */ |
| 415 | int sst_drop_stream(int str_id) |
| 416 | { |
| 417 | int retval = 0; |
| 418 | struct ipc_post *msg = NULL; |
| 419 | struct sst_stream_bufs *bufs = NULL, *_bufs; |
| 420 | struct stream_info *str_info; |
| 421 | |
| 422 | pr_debug("SST DBG:sst_drop_stream for %d\n", str_id); |
| 423 | retval = sst_validate_strid(str_id); |
| 424 | if (retval) |
| 425 | return retval; |
| 426 | str_info = &sst_drv_ctx->streams[str_id]; |
| 427 | |
| 428 | if (str_info->status != STREAM_UN_INIT && |
| 429 | str_info->status != STREAM_DECODE) { |
| 430 | if (str_info->ctrl_blk.on == true) { |
| 431 | pr_err("SST ERR: control path in use\n"); |
| 432 | return -EINVAL; |
| 433 | } |
| 434 | if (sst_create_short_msg(&msg)) { |
| 435 | pr_err("SST ERR: mem allocation failed\n"); |
| 436 | return -ENOMEM; |
| 437 | } |
| 438 | sst_fill_header(&msg->header, IPC_IA_DROP_STREAM, 0, str_id); |
| 439 | str_info->ctrl_blk.condition = false; |
| 440 | str_info->ctrl_blk.ret_code = 0; |
| 441 | str_info->ctrl_blk.on = true; |
| 442 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 443 | list_add_tail(&msg->node, |
| 444 | &sst_drv_ctx->ipc_dispatch_list); |
| 445 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 446 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 447 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, |
| 448 | &str_info->ctrl_blk, SST_BLOCK_TIMEOUT); |
| 449 | if (!retval) { |
| 450 | pr_debug("SST DBG:drop success\n"); |
| 451 | str_info->prev = STREAM_UN_INIT; |
| 452 | str_info->status = STREAM_INIT; |
| 453 | if (str_info->src != MAD_DRV) { |
| 454 | mutex_lock(&str_info->lock); |
| 455 | list_for_each_entry_safe(bufs, _bufs, |
| 456 | &str_info->bufs, node) { |
| 457 | list_del(&bufs->node); |
| 458 | kfree(bufs); |
| 459 | } |
| 460 | mutex_unlock(&str_info->lock); |
| 461 | } |
| 462 | str_info->cumm_bytes += str_info->curr_bytes; |
| 463 | } else if (retval == -SST_ERR_INVALID_STREAM_ID) { |
| 464 | retval = -EINVAL; |
| 465 | mutex_lock(&sst_drv_ctx->stream_lock); |
| 466 | sst_clean_stream(str_info); |
| 467 | mutex_unlock(&sst_drv_ctx->stream_lock); |
| 468 | } |
| 469 | if (str_info->data_blk.on == true) { |
| 470 | str_info->data_blk.condition = true; |
| 471 | str_info->data_blk.ret_code = retval; |
| 472 | wake_up(&sst_drv_ctx->wait_queue); |
| 473 | } |
| 474 | } else { |
| 475 | retval = -EBADRQC; |
Joe Perches | d0f40c5 | 2010-10-20 18:51:06 -0700 | [diff] [blame] | 476 | pr_err("SST ERR: BADQRC for stream\n"); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 477 | } |
| 478 | return retval; |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * sst_drain_stream - Send msg for draining stream |
| 483 | * @str_id: stream ID |
| 484 | * |
| 485 | * This function is called by any function which wants to drain |
| 486 | * a stream. |
| 487 | */ |
| 488 | int sst_drain_stream(int str_id) |
| 489 | { |
| 490 | int retval = 0; |
| 491 | struct ipc_post *msg = NULL; |
| 492 | struct stream_info *str_info; |
| 493 | |
| 494 | pr_debug("SST DBG:sst_drain_stream for %d\n", str_id); |
| 495 | retval = sst_validate_strid(str_id); |
| 496 | if (retval) |
| 497 | return retval; |
| 498 | str_info = &sst_drv_ctx->streams[str_id]; |
| 499 | |
| 500 | if (str_info->status != STREAM_RUNNING && |
| 501 | str_info->status != STREAM_INIT && |
| 502 | str_info->status != STREAM_PAUSED) { |
| 503 | pr_err("SST ERR: BADQRC for stream = %d\n", |
| 504 | str_info->status); |
| 505 | return -EBADRQC; |
| 506 | } |
| 507 | |
| 508 | if (str_info->status == STREAM_INIT) { |
| 509 | if (sst_create_short_msg(&msg)) { |
| 510 | pr_err("SST ERR: mem allocation failed\n"); |
| 511 | return -ENOMEM; |
| 512 | } |
| 513 | sst_fill_header(&msg->header, IPC_IA_DRAIN_STREAM, 0, str_id); |
| 514 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 515 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); |
| 516 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 517 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 518 | } else |
| 519 | str_info->need_draining = true; |
| 520 | str_info->data_blk.condition = false; |
| 521 | str_info->data_blk.ret_code = 0; |
| 522 | str_info->data_blk.on = true; |
| 523 | retval = sst_wait_interruptible(sst_drv_ctx, &str_info->data_blk); |
| 524 | str_info->need_draining = false; |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 525 | return retval; |
| 526 | } |
| 527 | |
| 528 | /** |
| 529 | * sst_free_stream - Frees a stream |
| 530 | * @str_id: stream ID |
| 531 | * |
| 532 | * This function is called by any function which wants to free |
| 533 | * a stream. |
| 534 | */ |
| 535 | int sst_free_stream(int str_id) |
| 536 | { |
| 537 | int retval = 0; |
| 538 | struct ipc_post *msg = NULL; |
| 539 | struct stream_info *str_info; |
| 540 | |
| 541 | pr_debug("SST DBG:sst_free_stream for %d\n", str_id); |
| 542 | |
| 543 | retval = sst_validate_strid(str_id); |
| 544 | if (retval) |
| 545 | return retval; |
| 546 | str_info = &sst_drv_ctx->streams[str_id]; |
| 547 | |
| 548 | if (str_info->status != STREAM_UN_INIT) { |
| 549 | if (sst_create_short_msg(&msg)) { |
| 550 | pr_err("SST ERR: mem allocation failed\n"); |
| 551 | return -ENOMEM; |
| 552 | } |
| 553 | sst_fill_header(&msg->header, IPC_IA_FREE_STREAM, 0, str_id); |
| 554 | spin_lock(&sst_drv_ctx->list_spin_lock); |
| 555 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); |
| 556 | spin_unlock(&sst_drv_ctx->list_spin_lock); |
| 557 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| 558 | str_info->prev = str_info->status; |
| 559 | str_info->status = STREAM_UN_INIT; |
| 560 | if (str_info->data_blk.on == true) { |
| 561 | str_info->data_blk.condition = true; |
| 562 | str_info->data_blk.ret_code = 0; |
| 563 | wake_up(&sst_drv_ctx->wait_queue); |
| 564 | } |
Vinod Koul | afe9194 | 2011-05-03 17:31:49 +0100 | [diff] [blame] | 565 | str_info->data_blk.on = true; |
| 566 | str_info->data_blk.condition = false; |
| 567 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, |
| 568 | &str_info->ctrl_blk, SST_BLOCK_TIMEOUT); |
| 569 | pr_debug("wait for free returned %d\n", retval); |
| 570 | msleep(100); |
Vinod Koul | fffa1cc | 2010-10-05 16:25:17 +0100 | [diff] [blame] | 571 | mutex_lock(&sst_drv_ctx->stream_lock); |
| 572 | sst_clean_stream(str_info); |
| 573 | mutex_unlock(&sst_drv_ctx->stream_lock); |
| 574 | pr_debug("SST DBG:Stream freed\n"); |
| 575 | } else { |
| 576 | retval = -EBADRQC; |
| 577 | pr_debug("SST DBG:BADQRC for stream\n"); |
| 578 | } |
| 579 | |
| 580 | return retval; |
| 581 | } |
| 582 | |
| 583 | |