drivers/staging/intel_sst/intel_sst_ipc.c

   1 /*
   2  *  intel_sst_ipc.c - Intel SST Driver for audio engine
   3  *
   4  *  Copyright (C) 2008-10 Intel Corporation
   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 defines all ipc functions
  27  */
  28
  29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  30
  31 #include <linux/pci.h>
  32 #include <linux/firmware.h>
  33 #include <linux/sched.h>
  34 #include "intel_sst.h"
  35 #include "intel_sst_ioctl.h"
  36 #include "intel_sst_fw_ipc.h"
  37 #include "intel_sst_common.h"
  38
  39 /*
  40  * sst_send_sound_card_type - send sound card type
  41  *
  42  * this function sends the sound card type to sst dsp engine
  43  */
  44 static void sst_send_sound_card_type(void)
  45 {
  46         struct ipc_post *msg = NULL;
  47
  48         if (sst_create_short_msg(&msg))
  49                 return;
  50
  51         sst_fill_header(&msg->header, IPC_IA_SET_PMIC_TYPE, 0, 0);
  52         msg->header.part.data = sst_drv_ctx->pmic_vendor;
  53         spin_lock(&sst_drv_ctx->list_spin_lock);
  54         list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
  55         spin_unlock(&sst_drv_ctx->list_spin_lock);
  56         sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
  57         return;
  58 }
  59
  60 /**
  61 * sst_post_message - Posts message to SST
  62 *
  63 * @work: Pointer to work structure
  64 *
  65 * This function is called by any component in driver which
  66 * wants to send an IPC message. This will post message only if
  67 * busy bit is free
  68 */
  69 void sst_post_message(struct work_struct *work)
  70 {
  71         struct ipc_post *msg;
  72         union ipc_header header;
  73         union  interrupt_reg imr;
  74         int retval = 0;
  75         imr.full = 0;
  76
  77         /*To check if LPE is in stalled state.*/
  78         retval = sst_stalled();
  79         if (retval < 0) {
  80                 pr_err("in stalled state\n");
  81                 return;
  82         }
  83         pr_debug("post message called\n");
  84         spin_lock(&sst_drv_ctx->list_spin_lock);
  85
  86         /* check list */
  87         if (list_empty(&sst_drv_ctx->ipc_dispatch_list)) {
  88                 /* list is empty, mask imr */
  89                 pr_debug("Empty msg queue... masking\n");
  90                 imr.full = readl(sst_drv_ctx->shim + SST_IMRX);
  91                 imr.part.done_interrupt = 1;
  92                 /* dummy register for shim workaround */
  93                 sst_shim_write(sst_drv_ctx->shim, SST_IMRX, imr.full);
  94                 spin_unlock(&sst_drv_ctx->list_spin_lock);
  95                 return;
  96         }
  97
  98         /* check busy bit */
  99         header.full = sst_shim_read(sst_drv_ctx->shim, SST_IPCX);
 100         if (header.part.busy) {
 101                 /* busy, unmask */
 102                 pr_debug("Busy not free... unmasking\n");
 103                 imr.full = readl(sst_drv_ctx->shim + SST_IMRX);
 104                 imr.part.done_interrupt = 0;
 105                 /* dummy register for shim workaround */
 106                 sst_shim_write(sst_drv_ctx->shim, SST_IMRX, imr.full);
 107                 spin_unlock(&sst_drv_ctx->list_spin_lock);
 108                 return;
 109         }
 110         /* copy msg from list */
 111         msg = list_entry(sst_drv_ctx->ipc_dispatch_list.next,
 112                         struct ipc_post, node);
 113         list_del(&msg->node);
 114         pr_debug("Post message: header = %x\n", msg->header.full);
 115         pr_debug("size: = %x\n", msg->header.part.data);
 116         if (msg->header.part.large)
 117                 memcpy_toio(sst_drv_ctx->mailbox + SST_MAILBOX_SEND,
 118                         msg->mailbox_data, msg->header.part.data);
 119         /* dummy register for shim workaround */
 120
 121         sst_shim_write(sst_drv_ctx->shim, SST_IPCX, msg->header.full);
 122         spin_unlock(&sst_drv_ctx->list_spin_lock);
 123
 124         kfree(msg->mailbox_data);
 125         kfree(msg);
 126         return;
 127 }
 128
 129 /*
 130  * sst_clear_interrupt - clear the SST FW interrupt
 131  *
 132  * This function clears the interrupt register after the interrupt
 133  * bottom half is complete allowing next interrupt to arrive
 134  */
 135 void sst_clear_interrupt(void)
 136 {
 137         union interrupt_reg isr;
 138         union interrupt_reg imr;
 139         union ipc_header clear_ipc;
 140
 141         imr.full = sst_shim_read(sst_drv_ctx->shim, SST_IMRX);
 142         isr.full = sst_shim_read(sst_drv_ctx->shim, SST_ISRX);
 143         /*  write 1 to clear  */;
 144         isr.part.busy_interrupt = 1;
 145         sst_shim_write(sst_drv_ctx->shim, SST_ISRX, isr.full);
 146         /* Set IA done bit */
 147         clear_ipc.full = sst_shim_read(sst_drv_ctx->shim, SST_IPCD);
 148         clear_ipc.part.busy = 0;
 149         clear_ipc.part.done = 1;
 150         clear_ipc.part.data = IPC_ACK_SUCCESS;
 151         sst_shim_write(sst_drv_ctx->shim, SST_IPCD, clear_ipc.full);
 152         /* un mask busy interrupt */
 153         imr.part.busy_interrupt = 0;
 154         sst_shim_write(sst_drv_ctx->shim, SST_IMRX, imr.full);
 155 }
 156
 157 /*
 158  * process_fw_init - process the FW init msg
 159  *
 160  * @msg: IPC message from FW
 161  *
 162  * This function processes the FW init msg from FW
 163  * marks FW state and prints debug info of loaded FW
 164  */
 165 int process_fw_init(struct sst_ipc_msg_wq *msg)
 166 {
 167         struct ipc_header_fw_init *init =
 168                 (struct ipc_header_fw_init *)msg->mailbox;
 169         int retval = 0;
 170
 171         pr_debug("*** FW Init msg came***\n");
 172         if (init->result) {
 173                 mutex_lock(&sst_drv_ctx->sst_lock);
 174                 sst_drv_ctx->sst_state = SST_ERROR;
 175                 mutex_unlock(&sst_drv_ctx->sst_lock);
 176                 pr_debug("FW Init failed, Error %x\n", init->result);
 177                 pr_err("FW Init failed, Error %x\n", init->result);
 178                 retval = -init->result;
 179                 return retval;
 180         }
 181         if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID)
 182                 sst_send_sound_card_type();
 183         mutex_lock(&sst_drv_ctx->sst_lock);
 184         sst_drv_ctx->sst_state = SST_FW_RUNNING;
 185         sst_drv_ctx->lpe_stalled = 0;
 186         mutex_unlock(&sst_drv_ctx->sst_lock);
 187         pr_debug("FW Version %x.%x\n",
 188                         init->fw_version.major, init->fw_version.minor);
 189         pr_debug("Build No %x Type %x\n",
 190                         init->fw_version.build, init->fw_version.type);
 191         pr_debug(" Build date %s Time %s\n",
 192                         init->build_info.date, init->build_info.time);
 193         sst_wake_up_alloc_block(sst_drv_ctx, FW_DWNL_ID, retval, NULL);
 194         return retval;
 195 }
 196 /**
 197 * sst_process_message - Processes message from SST
 198 *
 199 * @work:        Pointer to work structure
 200 *
 201 * This function is scheduled by ISR
 202 * It take a msg from process_queue and does action based on msg
 203 */
 204 void sst_process_message(struct work_struct *work)
 205 {
 206         struct sst_ipc_msg_wq *msg =
 207                         container_of(work, struct sst_ipc_msg_wq, wq);
 208         int str_id = msg->header.part.str_id;
 209
 210         pr_debug("IPC process for %x\n", msg->header.full);
 211
 212         /* based on msg in list call respective handler */
 213         switch (msg->header.part.msg_id) {
 214         case IPC_SST_BUF_UNDER_RUN:
 215         case IPC_SST_BUF_OVER_RUN:
 216                 if (sst_validate_strid(str_id)) {
 217                         pr_err("stream id %d invalid\n", str_id);
 218                         break;
 219                 }
 220                 pr_err("Buffer under/overrun for %d\n",
 221                                 msg->header.part.str_id);
 222                 pr_err("Got Underrun & not to send data...ignore\n");
 223                 break;
 224
 225         case IPC_SST_GET_PLAY_FRAMES:
 226                 if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) {
 227                         struct stream_info *stream ;
 228
 229                         if (sst_validate_strid(str_id)) {
 230                                 pr_err("strid %d invalid\n", str_id);
 231                                 break;
 232                         }
 233                         /* call sst_play_frame */
 234                         stream = &sst_drv_ctx->streams[str_id];
 235                         pr_debug("sst_play_frames for %d\n",
 236                                         msg->header.part.str_id);
 237                         mutex_lock(&sst_drv_ctx->streams[str_id].lock);
 238                         sst_play_frame(msg->header.part.str_id);
 239                         mutex_unlock(&sst_drv_ctx->streams[str_id].lock);
 240                         break;
 241                 } else
 242                         pr_err("sst_play_frames for Penwell!!\n");
 243
 244         case IPC_SST_GET_CAPT_FRAMES:
 245                 if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) {
 246                         struct stream_info *stream;
 247                         /* call sst_capture_frame */
 248                         if (sst_validate_strid(str_id)) {
 249                                 pr_err("str id %d invalid\n", str_id);
 250                                 break;
 251                         }
 252                         stream = &sst_drv_ctx->streams[str_id];
 253                         pr_debug("sst_capture_frames for %d\n",
 254                                         msg->header.part.str_id);
 255                         mutex_lock(&stream->lock);
 256                         if (stream->mmapped == false &&
 257                                         stream->src == SST_DRV) {
 258                                 pr_debug("waking up block for copy.\n");
 259                                 stream->data_blk.ret_code = 0;
 260                                 stream->data_blk.condition = true;
 261                                 stream->data_blk.on = false;
 262                                 wake_up(&sst_drv_ctx->wait_queue);
 263                         } else
 264                                 sst_capture_frame(msg->header.part.str_id);
 265                         mutex_unlock(&stream->lock);
 266                 } else
 267                         pr_err("sst_play_frames for Penwell!!\n");
 268                 break;
 269
 270         case IPC_IA_PRINT_STRING:
 271                 pr_debug("been asked to print something by fw\n");
 272                 /* TBD */
 273                 break;
 274
 275         case IPC_IA_FW_INIT_CMPLT: {
 276                 /* send next data to FW */
 277                 process_fw_init(msg);
 278                 break;
 279         }
 280
 281         case IPC_SST_STREAM_PROCESS_FATAL_ERR:
 282                 if (sst_validate_strid(str_id)) {
 283                         pr_err("stream id %d invalid\n", str_id);
 284                         break;
 285                 }
 286                 pr_err("codec fatal error %x stream %d...\n",
 287                                 msg->header.full, msg->header.part.str_id);
 288                 pr_err("Dropping the stream\n");
 289                 sst_drop_stream(msg->header.part.str_id);
 290                 break;
 291         case IPC_IA_LPE_GETTING_STALLED:
 292                 sst_drv_ctx->lpe_stalled = 1;
 293                 break;
 294         case IPC_IA_LPE_UNSTALLED:
 295                 sst_drv_ctx->lpe_stalled = 0;
 296                 break;
 297         default:
 298                 /* Illegal case */
 299                 pr_err("Unhandled msg %x header %x\n",
 300                 msg->header.part.msg_id, msg->header.full);
 301         }
 302         sst_clear_interrupt();
 303         return;
 304 }
 305
 306 /**
 307 * sst_process_reply - Processes reply message from SST
 308 *
 309 * @work:        Pointer to work structure
 310 *
 311 * This function is scheduled by ISR
 312 * It take a reply msg from response_queue and
 313 * does action based on msg
 314 */
 315 void sst_process_reply(struct work_struct *work)
 316 {
 317         struct sst_ipc_msg_wq *msg =
 318                         container_of(work, struct sst_ipc_msg_wq, wq);
 319
 320         int str_id = msg->header.part.str_id;
 321         struct stream_info *str_info;
 322
 323         switch (msg->header.part.msg_id) {
 324         case IPC_IA_TARGET_DEV_SELECT:
 325                 if (!msg->header.part.data) {
 326                         sst_drv_ctx->tgt_dev_blk.ret_code = 0;
 327                 } else {
 328                         pr_err(" Msg %x reply error %x\n",
 329                         msg->header.part.msg_id, msg->header.part.data);
 330                         sst_drv_ctx->tgt_dev_blk.ret_code =
 331                                         -msg->header.part.data;
 332                 }
 333
 334                 if (sst_drv_ctx->tgt_dev_blk.on == true) {
 335                                 sst_drv_ctx->tgt_dev_blk.condition = true;
 336                                 wake_up(&sst_drv_ctx->wait_queue);
 337                 }
 338                 break;
 339         case IPC_IA_ALG_PARAMS: {
 340                 pr_debug("sst:IPC_ALG_PARAMS response %x\n", msg->header.full);
 341                 pr_debug("sst: data value %x\n", msg->header.part.data);
 342                 pr_debug("sst: large value %x\n", msg->header.part.large);
 343
 344                 if (!msg->header.part.large) {
 345                         if (!msg->header.part.data) {
 346                                 pr_debug("sst: alg set success\n");
 347                                 sst_drv_ctx->ppp_params_blk.ret_code = 0;
 348                         } else {
 349                                 pr_debug("sst: alg set failed\n");
 350                                 sst_drv_ctx->ppp_params_blk.ret_code =
 351                                                         -msg->header.part.data;
 352                         }
 353
 354                 } else if (msg->header.part.data) {
 355                         struct snd_ppp_params *mailbox_params, *get_params;
 356                         char *params;
 357
 358                         pr_debug("sst: alg get success\n");
 359                         mailbox_params = (struct snd_ppp_params *)msg->mailbox;
 360                         get_params = kzalloc(sizeof(*get_params), GFP_KERNEL);
 361                         if (get_params == NULL) {
 362                                 pr_err("sst: out of memory for ALG PARAMS");
 363                                 break;
 364                         }
 365                         memcpy_fromio(get_params, mailbox_params,
 366                                                         sizeof(*get_params));
 367                         get_params->params = kzalloc(mailbox_params->size,
 368                                                         GFP_KERNEL);
 369                         if (get_params->params == NULL) {
 370                                 kfree(get_params);
 371                                 pr_err("sst: out of memory for ALG PARAMS block");
 372                                 break;
 373                         }
 374                         params = msg->mailbox;
 375                         params = params + sizeof(*mailbox_params) - sizeof(u32);
 376                         memcpy_fromio(get_params->params, params,
 377                                                         get_params->size);
 378                         sst_drv_ctx->ppp_params_blk.ret_code = 0;
 379                         sst_drv_ctx->ppp_params_blk.data = get_params;
 380                 }
 381
 382                 if (sst_drv_ctx->ppp_params_blk.on == true) {
 383                         sst_drv_ctx->ppp_params_blk.condition = true;
 384                         wake_up(&sst_drv_ctx->wait_queue);
 385                 }
 386                 break;
 387         }
 388         case IPC_IA_GET_FW_INFO: {
 389                 struct snd_sst_fw_info *fw_info =
 390                         (struct snd_sst_fw_info *)msg->mailbox;
 391                 if (msg->header.part.large) {
 392                         int major = fw_info->fw_version.major;
 393                         int minor = fw_info->fw_version.minor;
 394                         int build = fw_info->fw_version.build;
 395                         pr_debug("Msg succeeded %x\n",
 396                                        msg->header.part.msg_id);
 397                         pr_debug("INFO: ***FW*** = %02d.%02d.%02d\n",
 398                                         major, minor, build);
 399                         memcpy_fromio(sst_drv_ctx->fw_info_blk.data,
 400                                 ((struct snd_sst_fw_info *)(msg->mailbox)),
 401                                 sizeof(struct snd_sst_fw_info));
 402                         sst_drv_ctx->fw_info_blk.ret_code = 0;
 403                 } else {
 404                         pr_err(" Msg %x reply error %x\n",
 405                         msg->header.part.msg_id, msg->header.part.data);
 406                         sst_drv_ctx->fw_info_blk.ret_code =
 407                                         -msg->header.part.data;
 408                 }
 409                 if (sst_drv_ctx->fw_info_blk.on == true) {
 410                         pr_debug("Memcopy succeeded\n");
 411                         sst_drv_ctx->fw_info_blk.on = false;
 412                         sst_drv_ctx->fw_info_blk.condition = true;
 413                         wake_up(&sst_drv_ctx->wait_queue);
 414                 }
 415                 break;
 416         }
 417         case IPC_IA_SET_STREAM_MUTE:
 418                 if (!msg->header.part.data) {
 419                         pr_debug("Msg succeeded %x\n",
 420                                        msg->header.part.msg_id);
 421                         sst_drv_ctx->mute_info_blk.ret_code = 0;
 422                 } else {
 423                         pr_err(" Msg %x reply error %x\n",
 424                         msg->header.part.msg_id, msg->header.part.data);
 425                         sst_drv_ctx->mute_info_blk.ret_code =
 426                                         -msg->header.part.data;
 427
 428                 }
 429                 if (sst_drv_ctx->mute_info_blk.on == true) {
 430                         sst_drv_ctx->mute_info_blk.on = false;
 431                         sst_drv_ctx->mute_info_blk.condition = true;
 432                         wake_up(&sst_drv_ctx->wait_queue);
 433                 }
 434                 break;
 435         case IPC_IA_SET_STREAM_VOL:
 436                 if (!msg->header.part.data) {
 437                         pr_debug("Msg succeeded %x\n",
 438                                        msg->header.part.msg_id);
 439                         sst_drv_ctx->vol_info_blk.ret_code = 0;
 440                 } else {
 441                         pr_err(" Msg %x reply error %x\n",
 442                                         msg->header.part.msg_id,
 443                         msg->header.part.data);
 444                         sst_drv_ctx->vol_info_blk.ret_code =
 445                                         -msg->header.part.data;
 446
 447                 }
 448
 449                 if (sst_drv_ctx->vol_info_blk.on == true) {
 450                         sst_drv_ctx->vol_info_blk.on = false;
 451                         sst_drv_ctx->vol_info_blk.condition = true;
 452                         wake_up(&sst_drv_ctx->wait_queue);
 453                 }
 454                 break;
 455         case IPC_IA_GET_STREAM_VOL:
 456                 if (msg->header.part.large) {
 457                         pr_debug("Large Msg Received Successfully\n");
 458                         pr_debug("Msg succeeded %x\n",
 459                                        msg->header.part.msg_id);
 460                         memcpy_fromio(sst_drv_ctx->vol_info_blk.data,
 461                                 (void *) msg->mailbox,
 462                                 sizeof(struct snd_sst_vol));
 463                         sst_drv_ctx->vol_info_blk.ret_code = 0;
 464                 } else {
 465                         pr_err("Msg %x reply error %x\n",
 466                         msg->header.part.msg_id, msg->header.part.data);
 467                         sst_drv_ctx->vol_info_blk.ret_code =
 468                                         -msg->header.part.data;
 469                 }
 470                 if (sst_drv_ctx->vol_info_blk.on == true) {
 471                         sst_drv_ctx->vol_info_blk.on = false;
 472                         sst_drv_ctx->vol_info_blk.condition = true;
 473                         wake_up(&sst_drv_ctx->wait_queue);
 474                 }
 475                 break;
 476
 477         case IPC_IA_GET_STREAM_PARAMS:
 478                 if (sst_validate_strid(str_id)) {
 479                         pr_err("stream id %d invalid\n", str_id);
 480                         break;
 481                 }
 482                 str_info = &sst_drv_ctx->streams[str_id];
 483                 if (msg->header.part.large) {
 484                         pr_debug("Get stream large success\n");
 485                         memcpy_fromio(str_info->ctrl_blk.data,
 486                                 ((void *)(msg->mailbox)),
 487                                 sizeof(struct snd_sst_fw_get_stream_params));
 488                         str_info->ctrl_blk.ret_code = 0;
 489                 } else {
 490                         pr_err("Msg %x reply error %x\n",
 491                                 msg->header.part.msg_id, msg->header.part.data);
 492                         str_info->ctrl_blk.ret_code = -msg->header.part.data;
 493                 }
 494                 if (str_info->ctrl_blk.on == true) {
 495                         str_info->ctrl_blk.on = false;
 496                         str_info->ctrl_blk.condition = true;
 497                         wake_up(&sst_drv_ctx->wait_queue);
 498                 }
 499                 break;
 500         case IPC_IA_DECODE_FRAMES:
 501                 if (sst_validate_strid(str_id)) {
 502                         pr_err("stream id %d invalid\n", str_id);
 503                         break;
 504                 }
 505                 str_info = &sst_drv_ctx->streams[str_id];
 506                 if (msg->header.part.large) {
 507                         pr_debug("Msg succeeded %x\n",
 508                                        msg->header.part.msg_id);
 509                         memcpy_fromio(str_info->data_blk.data,
 510                                         ((void *)(msg->mailbox)),
 511                                         sizeof(struct snd_sst_decode_info));
 512                         str_info->data_blk.ret_code = 0;
 513                 } else {
 514                         pr_err("Msg %x reply error %x\n",
 515                                 msg->header.part.msg_id, msg->header.part.data);
 516                         str_info->data_blk.ret_code = -msg->header.part.data;
 517                 }
 518                 if (str_info->data_blk.on == true) {
 519                         str_info->data_blk.on = false;
 520                         str_info->data_blk.condition = true;
 521                         wake_up(&sst_drv_ctx->wait_queue);
 522                 }
 523                 break;
 524         case IPC_IA_DRAIN_STREAM:
 525                 if (sst_validate_strid(str_id)) {
 526                         pr_err("stream id %d invalid\n", str_id);
 527                         break;
 528                 }
 529                 str_info = &sst_drv_ctx->streams[str_id];
 530                 if (!msg->header.part.data) {
 531                         pr_debug("Msg succeeded %x\n",
 532                                         msg->header.part.msg_id);
 533                         str_info->ctrl_blk.ret_code = 0;
 534
 535                 } else {
 536                         pr_err(" Msg %x reply error %x\n",
 537                                 msg->header.part.msg_id, msg->header.part.data);
 538                         str_info->ctrl_blk.ret_code = -msg->header.part.data;
 539
 540                 }
 541                 str_info = &sst_drv_ctx->streams[str_id];
 542                 if (str_info->data_blk.on == true) {
 543                         str_info->data_blk.on = false;
 544                         str_info->data_blk.condition = true;
 545                         wake_up(&sst_drv_ctx->wait_queue);
 546                 }
 547                 break;
 548
 549         case IPC_IA_DROP_STREAM:
 550                 if (sst_validate_strid(str_id)) {
 551                         pr_err("str id %d invalid\n", str_id);
 552                         break;
 553                 }
 554                 str_info = &sst_drv_ctx->streams[str_id];
 555                 if (msg->header.part.large) {
 556                         struct snd_sst_drop_response *drop_resp =
 557                                 (struct snd_sst_drop_response *)msg->mailbox;
 558
 559                         pr_debug("Drop ret bytes %x\n", drop_resp->bytes);
 560
 561                         str_info->curr_bytes = drop_resp->bytes;
 562                         str_info->ctrl_blk.ret_code =  0;
 563                 } else {
 564                         pr_err(" Msg %x reply error %x\n",
 565                                 msg->header.part.msg_id, msg->header.part.data);
 566                         str_info->ctrl_blk.ret_code = -msg->header.part.data;
 567                 }
 568                 if (str_info->ctrl_blk.on == true) {
 569                         str_info->ctrl_blk.on = false;
 570                         str_info->ctrl_blk.condition = true;
 571                         wake_up(&sst_drv_ctx->wait_queue);
 572                 }
 573                 break;
 574         case IPC_IA_ENABLE_RX_TIME_SLOT:
 575                 if (!msg->header.part.data) {
 576                         pr_debug("RX_TIME_SLOT success\n");
 577                         sst_drv_ctx->hs_info_blk.ret_code = 0;
 578                 } else {
 579                         pr_err(" Msg %x reply error %x\n",
 580                                 msg->header.part.msg_id,
 581                                 msg->header.part.data);
 582                         sst_drv_ctx->hs_info_blk.ret_code =
 583                                 -msg->header.part.data;
 584                 }
 585                 if (sst_drv_ctx->hs_info_blk.on == true) {
 586                         sst_drv_ctx->hs_info_blk.on = false;
 587                         sst_drv_ctx->hs_info_blk.condition = true;
 588                         wake_up(&sst_drv_ctx->wait_queue);
 589                 }
 590                 break;
 591         case IPC_IA_PAUSE_STREAM:
 592         case IPC_IA_RESUME_STREAM:
 593         case IPC_IA_SET_STREAM_PARAMS:
 594                 str_info = &sst_drv_ctx->streams[str_id];
 595                 if (!msg->header.part.data) {
 596                         pr_debug("Msg succeeded %x\n",
 597                                         msg->header.part.msg_id);
 598                         str_info->ctrl_blk.ret_code = 0;
 599                 } else {
 600                         pr_err(" Msg %x reply error %x\n",
 601                                         msg->header.part.msg_id,
 602                                         msg->header.part.data);
 603                         str_info->ctrl_blk.ret_code = -msg->header.part.data;
 604                 }
 605                 if (sst_validate_strid(str_id)) {
 606                         pr_err(" stream id %d invalid\n", str_id);
 607                         break;
 608                 }
 609
 610                 if (str_info->ctrl_blk.on == true) {
 611                         str_info->ctrl_blk.on = false;
 612                         str_info->ctrl_blk.condition = true;
 613                         wake_up(&sst_drv_ctx->wait_queue);
 614                 }
 615                 break;
 616
 617         case IPC_IA_FREE_STREAM:
 618                 if (!msg->header.part.data) {
 619                         pr_debug("Stream %d freed\n", str_id);
 620                 } else {
 621                         pr_err("Free for %d ret error %x\n",
 622                                        str_id, msg->header.part.data);
 623                 }
 624                 break;
 625         case IPC_IA_ALLOC_STREAM: {
 626                 /* map to stream, call play */
 627                 struct snd_sst_alloc_response *resp =
 628                                 (struct snd_sst_alloc_response *)msg->mailbox;
 629                 if (resp->str_type.result)
 630                         pr_err("error alloc stream = %x\n",
 631                                        resp->str_type.result);
 632                 sst_alloc_stream_response(str_id, resp);
 633                 break;
 634         }
 635
 636         case IPC_IA_PLAY_FRAMES:
 637         case IPC_IA_CAPT_FRAMES:
 638                 if (sst_validate_strid(str_id)) {
 639                         pr_err("stream id %d invalid\n", str_id);
 640                         break;
 641                 }
 642                 pr_debug("Ack for play/capt frames received\n");
 643                 break;
 644
 645         case IPC_IA_PREP_LIB_DNLD: {
 646                 struct snd_sst_str_type *str_type =
 647                         (struct snd_sst_str_type *)msg->mailbox;
 648                 pr_debug("Prep Lib download %x\n",
 649                                 msg->header.part.msg_id);
 650                 if (str_type->result)
 651                         pr_err("Prep lib download %x\n", str_type->result);
 652                 else
 653                         pr_debug("Can download codec now...\n");
 654                 sst_wake_up_alloc_block(sst_drv_ctx, str_id,
 655                                 str_type->result, NULL);
 656                 break;
 657         }
 658
 659         case IPC_IA_LIB_DNLD_CMPLT: {
 660                 struct snd_sst_lib_download_info *resp =
 661                         (struct snd_sst_lib_download_info *)msg->mailbox;
 662                 int retval = resp->result;
 663
 664                 pr_debug("Lib downloaded %x\n", msg->header.part.msg_id);
 665                 if (resp->result) {
 666                         pr_err("err in lib dload %x\n", resp->result);
 667                 } else {
 668                         pr_debug("Codec download complete...\n");
 669                         pr_debug("codec Type %d Ver %d Built %s: %s\n",
 670                                 resp->dload_lib.lib_info.lib_type,
 671                                 resp->dload_lib.lib_info.lib_version,
 672                                 resp->dload_lib.lib_info.b_date,
 673                                 resp->dload_lib.lib_info.b_time);
 674                 }
 675                 sst_wake_up_alloc_block(sst_drv_ctx, str_id,
 676                                                 retval, NULL);
 677                 break;
 678         }
 679
 680         case IPC_IA_GET_FW_VERSION: {
 681                 struct ipc_header_fw_init *version =
 682                                 (struct ipc_header_fw_init *)msg->mailbox;
 683                 int major = version->fw_version.major;
 684                 int minor = version->fw_version.minor;
 685                 int build = version->fw_version.build;
 686                 dev_info(&sst_drv_ctx->pci->dev,
 687                         "INFO: ***LOADED SST FW VERSION*** = %02d.%02d.%02d\n",
 688                 major, minor, build);
 689                 break;
 690         }
 691         case IPC_IA_GET_FW_BUILD_INF: {
 692                 struct sst_fw_build_info *build =
 693                         (struct sst_fw_build_info *)msg->mailbox;
 694                 pr_debug("Build date:%sTime:%s", build->date, build->time);
 695                 break;
 696         }
 697         case IPC_IA_SET_PMIC_TYPE:
 698                 break;
 699         case IPC_IA_START_STREAM:
 700                 pr_debug("reply for START STREAM %x\n", msg->header.full);
 701                 break;
 702         default:
 703                 /* Illegal case */
 704                 pr_err("process reply:default = %x\n", msg->header.full);
 705         }
 706         sst_clear_interrupt();
 707         return;
 708 }