sound/soc/sof/ipc.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
   2 //
   3 // This file is provided under a dual BSD/GPLv2 license.  When using or
   4 // redistributing this file, you may do so under either license.
   5 //
   6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
   7 //
   8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
   9 //
  10 // Generic IPC layer that can work over MMIO and SPI/I2C. PHY layer provided
  11 // by platform driver code.
  12 //
  13
  14 #include <linux/mutex.h>
  15 #include <linux/types.h>
  16
  17 #include "sof-priv.h"
  18 #include "ops.h"
  19
  20 static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_id);
  21 static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd);
  22
  23 /*
  24  * IPC message Tx/Rx message handling.
  25  */
  26
  27 /* SOF generic IPC data */
  28 struct snd_sof_ipc {
  29         struct snd_sof_dev *sdev;
  30
  31         /* protects messages and the disable flag */
  32         struct mutex tx_mutex;
  33         /* disables further sending of ipc's */
  34         bool disable_ipc_tx;
  35
  36         struct snd_sof_ipc_msg msg;
  37 };
  38
  39 struct sof_ipc_ctrl_data_params {
  40         size_t msg_bytes;
  41         size_t hdr_bytes;
  42         size_t pl_size;
  43         size_t elems;
  44         u32 num_msg;
  45         u8 *src;
  46         u8 *dst;
  47 };
  48
  49 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_VERBOSE_IPC)
  50 static void ipc_log_header(struct device *dev, u8 *text, u32 cmd)
  51 {
  52         u8 *str;
  53         u8 *str2 = NULL;
  54         u32 glb;
  55         u32 type;
  56
  57         glb = cmd & SOF_GLB_TYPE_MASK;
  58         type = cmd & SOF_CMD_TYPE_MASK;
  59
  60         switch (glb) {
  61         case SOF_IPC_GLB_REPLY:
  62                 str = "GLB_REPLY"; break;
  63         case SOF_IPC_GLB_COMPOUND:
  64                 str = "GLB_COMPOUND"; break;
  65         case SOF_IPC_GLB_TPLG_MSG:
  66                 str = "GLB_TPLG_MSG";
  67                 switch (type) {
  68                 case SOF_IPC_TPLG_COMP_NEW:
  69                         str2 = "COMP_NEW"; break;
  70                 case SOF_IPC_TPLG_COMP_FREE:
  71                         str2 = "COMP_FREE"; break;
  72                 case SOF_IPC_TPLG_COMP_CONNECT:
  73                         str2 = "COMP_CONNECT"; break;
  74                 case SOF_IPC_TPLG_PIPE_NEW:
  75                         str2 = "PIPE_NEW"; break;
  76                 case SOF_IPC_TPLG_PIPE_FREE:
  77                         str2 = "PIPE_FREE"; break;
  78                 case SOF_IPC_TPLG_PIPE_CONNECT:
  79                         str2 = "PIPE_CONNECT"; break;
  80                 case SOF_IPC_TPLG_PIPE_COMPLETE:
  81                         str2 = "PIPE_COMPLETE"; break;
  82                 case SOF_IPC_TPLG_BUFFER_NEW:
  83                         str2 = "BUFFER_NEW"; break;
  84                 case SOF_IPC_TPLG_BUFFER_FREE:
  85                         str2 = "BUFFER_FREE"; break;
  86                 default:
  87                         str2 = "unknown type"; break;
  88                 }
  89                 break;
  90         case SOF_IPC_GLB_PM_MSG:
  91                 str = "GLB_PM_MSG";
  92                 switch (type) {
  93                 case SOF_IPC_PM_CTX_SAVE:
  94                         str2 = "CTX_SAVE"; break;
  95                 case SOF_IPC_PM_CTX_RESTORE:
  96                         str2 = "CTX_RESTORE"; break;
  97                 case SOF_IPC_PM_CTX_SIZE:
  98                         str2 = "CTX_SIZE"; break;
  99                 case SOF_IPC_PM_CLK_SET:
 100                         str2 = "CLK_SET"; break;
 101                 case SOF_IPC_PM_CLK_GET:
 102                         str2 = "CLK_GET"; break;
 103                 case SOF_IPC_PM_CLK_REQ:
 104                         str2 = "CLK_REQ"; break;
 105                 case SOF_IPC_PM_CORE_ENABLE:
 106                         str2 = "CORE_ENABLE"; break;
 107                 default:
 108                         str2 = "unknown type"; break;
 109                 }
 110                 break;
 111         case SOF_IPC_GLB_COMP_MSG:
 112                 str = "GLB_COMP_MSG";
 113                 switch (type) {
 114                 case SOF_IPC_COMP_SET_VALUE:
 115                         str2 = "SET_VALUE"; break;
 116                 case SOF_IPC_COMP_GET_VALUE:
 117                         str2 = "GET_VALUE"; break;
 118                 case SOF_IPC_COMP_SET_DATA:
 119                         str2 = "SET_DATA"; break;
 120                 case SOF_IPC_COMP_GET_DATA:
 121                         str2 = "GET_DATA"; break;
 122                 default:
 123                         str2 = "unknown type"; break;
 124                 }
 125                 break;
 126         case SOF_IPC_GLB_STREAM_MSG:
 127                 str = "GLB_STREAM_MSG";
 128                 switch (type) {
 129                 case SOF_IPC_STREAM_PCM_PARAMS:
 130                         str2 = "PCM_PARAMS"; break;
 131                 case SOF_IPC_STREAM_PCM_PARAMS_REPLY:
 132                         str2 = "PCM_REPLY"; break;
 133                 case SOF_IPC_STREAM_PCM_FREE:
 134                         str2 = "PCM_FREE"; break;
 135                 case SOF_IPC_STREAM_TRIG_START:
 136                         str2 = "TRIG_START"; break;
 137                 case SOF_IPC_STREAM_TRIG_STOP:
 138                         str2 = "TRIG_STOP"; break;
 139                 case SOF_IPC_STREAM_TRIG_PAUSE:
 140                         str2 = "TRIG_PAUSE"; break;
 141                 case SOF_IPC_STREAM_TRIG_RELEASE:
 142                         str2 = "TRIG_RELEASE"; break;
 143                 case SOF_IPC_STREAM_TRIG_DRAIN:
 144                         str2 = "TRIG_DRAIN"; break;
 145                 case SOF_IPC_STREAM_TRIG_XRUN:
 146                         str2 = "TRIG_XRUN"; break;
 147                 case SOF_IPC_STREAM_POSITION:
 148                         str2 = "POSITION"; break;
 149                 case SOF_IPC_STREAM_VORBIS_PARAMS:
 150                         str2 = "VORBIS_PARAMS"; break;
 151                 case SOF_IPC_STREAM_VORBIS_FREE:
 152                         str2 = "VORBIS_FREE"; break;
 153                 default:
 154                         str2 = "unknown type"; break;
 155                 }
 156                 break;
 157         case SOF_IPC_FW_READY:
 158                 str = "FW_READY"; break;
 159         case SOF_IPC_GLB_DAI_MSG:
 160                 str = "GLB_DAI_MSG";
 161                 switch (type) {
 162                 case SOF_IPC_DAI_CONFIG:
 163                         str2 = "CONFIG"; break;
 164                 case SOF_IPC_DAI_LOOPBACK:
 165                         str2 = "LOOPBACK"; break;
 166                 default:
 167                         str2 = "unknown type"; break;
 168                 }
 169                 break;
 170         case SOF_IPC_GLB_TRACE_MSG:
 171                 str = "GLB_TRACE_MSG"; break;
 172         case SOF_IPC_GLB_TEST_MSG:
 173                 str = "GLB_TEST_MSG";
 174                 switch (type) {
 175                 case SOF_IPC_TEST_IPC_FLOOD:
 176                         str2 = "IPC_FLOOD"; break;
 177                 default:
 178                         str2 = "unknown type"; break;
 179                 }
 180                 break;
 181         default:
 182                 str = "unknown GLB command"; break;
 183         }
 184
 185         if (str2)
 186                 dev_dbg(dev, "%s: 0x%x: %s: %s\n", text, cmd, str, str2);
 187         else
 188                 dev_dbg(dev, "%s: 0x%x: %s\n", text, cmd, str);
 189 }
 190 #else
 191 static inline void ipc_log_header(struct device *dev, u8 *text, u32 cmd)
 192 {
 193         if ((cmd & SOF_GLB_TYPE_MASK) != SOF_IPC_GLB_TRACE_MSG)
 194                 dev_dbg(dev, "%s: 0x%x\n", text, cmd);
 195 }
 196 #endif
 197
 198 /* wait for IPC message reply */
 199 static int tx_wait_done(struct snd_sof_ipc *ipc, struct snd_sof_ipc_msg *msg,
 200                         void *reply_data)
 201 {
 202         struct snd_sof_dev *sdev = ipc->sdev;
 203         struct sof_ipc_cmd_hdr *hdr = msg->msg_data;
 204         int ret;
 205
 206         /* wait for DSP IPC completion */
 207         ret = wait_event_timeout(msg->waitq, msg->ipc_complete,
 208                                  msecs_to_jiffies(sdev->ipc_timeout));
 209
 210         if (ret == 0) {
 211                 dev_err(sdev->dev, "error: ipc timed out for 0x%x size %d\n",
 212                         hdr->cmd, hdr->size);
 213                 snd_sof_dsp_dbg_dump(ipc->sdev, SOF_DBG_REGS | SOF_DBG_MBOX);
 214                 snd_sof_ipc_dump(ipc->sdev);
 215                 snd_sof_trace_notify_for_error(ipc->sdev);
 216                 ret = -ETIMEDOUT;
 217         } else {
 218                 /* copy the data returned from DSP */
 219                 ret = msg->reply_error;
 220                 if (msg->reply_size)
 221                         memcpy(reply_data, msg->reply_data, msg->reply_size);
 222                 if (ret < 0)
 223                         dev_err(sdev->dev, "error: ipc error for 0x%x size %zu\n",
 224                                 hdr->cmd, msg->reply_size);
 225                 else
 226                         ipc_log_header(sdev->dev, "ipc tx succeeded", hdr->cmd);
 227         }
 228
 229         return ret;
 230 }
 231
 232 /* send IPC message from host to DSP */
 233 static int sof_ipc_tx_message_unlocked(struct snd_sof_ipc *ipc, u32 header,
 234                                        void *msg_data, size_t msg_bytes,
 235                                        void *reply_data, size_t reply_bytes)
 236 {
 237         struct snd_sof_dev *sdev = ipc->sdev;
 238         struct snd_sof_ipc_msg *msg;
 239         int ret;
 240
 241         if (ipc->disable_ipc_tx)
 242                 return -ENODEV;
 243
 244         /*
 245          * The spin-lock is also still needed to protect message objects against
 246          * other atomic contexts.
 247          */
 248         spin_lock_irq(&sdev->ipc_lock);
 249
 250         /* initialise the message */
 251         msg = &ipc->msg;
 252
 253         msg->header = header;
 254         msg->msg_size = msg_bytes;
 255         msg->reply_size = reply_bytes;
 256         msg->reply_error = 0;
 257
 258         /* attach any data */
 259         if (msg_bytes)
 260                 memcpy(msg->msg_data, msg_data, msg_bytes);
 261
 262         sdev->msg = msg;
 263
 264         ret = snd_sof_dsp_send_msg(sdev, msg);
 265         /* Next reply that we receive will be related to this message */
 266         if (!ret)
 267                 msg->ipc_complete = false;
 268
 269         spin_unlock_irq(&sdev->ipc_lock);
 270
 271         if (ret < 0) {
 272                 /* So far IPC TX never fails, consider making the above void */
 273                 dev_err_ratelimited(sdev->dev,
 274                                     "error: ipc tx failed with error %d\n",
 275                                     ret);
 276                 return ret;
 277         }
 278
 279         ipc_log_header(sdev->dev, "ipc tx", msg->header);
 280
 281         /* now wait for completion */
 282         if (!ret)
 283                 ret = tx_wait_done(ipc, msg, reply_data);
 284
 285         return ret;
 286 }
 287
 288 /* send IPC message from host to DSP */
 289 int sof_ipc_tx_message(struct snd_sof_ipc *ipc, u32 header,
 290                        void *msg_data, size_t msg_bytes, void *reply_data,
 291                        size_t reply_bytes)
 292 {
 293         int ret;
 294
 295         if (msg_bytes > SOF_IPC_MSG_MAX_SIZE ||
 296             reply_bytes > SOF_IPC_MSG_MAX_SIZE)
 297                 return -ENOBUFS;
 298
 299         /* Serialise IPC TX */
 300         mutex_lock(&ipc->tx_mutex);
 301
 302         ret = sof_ipc_tx_message_unlocked(ipc, header, msg_data, msg_bytes,
 303                                           reply_data, reply_bytes);
 304
 305         mutex_unlock(&ipc->tx_mutex);
 306
 307         return ret;
 308 }
 309 EXPORT_SYMBOL(sof_ipc_tx_message);
 310
 311 /* handle reply message from DSP */
 312 int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
 313 {
 314         struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
 315
 316         if (msg->ipc_complete) {
 317                 dev_err(sdev->dev, "error: no reply expected, received 0x%x",
 318                         msg_id);
 319                 return -EINVAL;
 320         }
 321
 322         /* wake up and return the error if we have waiters on this message ? */
 323         msg->ipc_complete = true;
 324         wake_up(&msg->waitq);
 325
 326         return 0;
 327 }
 328 EXPORT_SYMBOL(snd_sof_ipc_reply);
 329
 330 /* DSP firmware has sent host a message  */
 331 void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev)
 332 {
 333         struct sof_ipc_cmd_hdr hdr;
 334         u32 cmd, type;
 335         int err = 0;
 336
 337         /* read back header */
 338         snd_sof_ipc_msg_data(sdev, NULL, &hdr, sizeof(hdr));
 339         ipc_log_header(sdev->dev, "ipc rx", hdr.cmd);
 340
 341         cmd = hdr.cmd & SOF_GLB_TYPE_MASK;
 342         type = hdr.cmd & SOF_CMD_TYPE_MASK;
 343
 344         /* check message type */
 345         switch (cmd) {
 346         case SOF_IPC_GLB_REPLY:
 347                 dev_err(sdev->dev, "error: ipc reply unknown\n");
 348                 break;
 349         case SOF_IPC_FW_READY:
 350                 /* check for FW boot completion */
 351                 if (!sdev->boot_complete) {
 352                         err = sof_ops(sdev)->fw_ready(sdev, cmd);
 353                         if (err < 0) {
 354                                 /*
 355                                  * this indicates a mismatch in ABI
 356                                  * between the driver and fw
 357                                  */
 358                                 dev_err(sdev->dev, "error: ABI mismatch %d\n",
 359                                         err);
 360                         } else {
 361                                 /* firmware boot completed OK */
 362                                 sdev->boot_complete = true;
 363                         }
 364
 365                         /* wake up firmware loader */
 366                         wake_up(&sdev->boot_wait);
 367                 }
 368                 break;
 369         case SOF_IPC_GLB_COMPOUND:
 370         case SOF_IPC_GLB_TPLG_MSG:
 371         case SOF_IPC_GLB_PM_MSG:
 372         case SOF_IPC_GLB_COMP_MSG:
 373                 break;
 374         case SOF_IPC_GLB_STREAM_MSG:
 375                 /* need to pass msg id into the function */
 376                 ipc_stream_message(sdev, hdr.cmd);
 377                 break;
 378         case SOF_IPC_GLB_TRACE_MSG:
 379                 ipc_trace_message(sdev, type);
 380                 break;
 381         default:
 382                 dev_err(sdev->dev, "error: unknown DSP message 0x%x\n", cmd);
 383                 break;
 384         }
 385
 386         ipc_log_header(sdev->dev, "ipc rx done", hdr.cmd);
 387 }
 388 EXPORT_SYMBOL(snd_sof_ipc_msgs_rx);
 389
 390 /*
 391  * IPC trace mechanism.
 392  */
 393
 394 static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_id)
 395 {
 396         struct sof_ipc_dma_trace_posn posn;
 397
 398         switch (msg_id) {
 399         case SOF_IPC_TRACE_DMA_POSITION:
 400                 /* read back full message */
 401                 snd_sof_ipc_msg_data(sdev, NULL, &posn, sizeof(posn));
 402                 snd_sof_trace_update_pos(sdev, &posn);
 403                 break;
 404         default:
 405                 dev_err(sdev->dev, "error: unhandled trace message %x\n",
 406                         msg_id);
 407                 break;
 408         }
 409 }
 410
 411 /*
 412  * IPC stream position.
 413  */
 414
 415 static void ipc_period_elapsed(struct snd_sof_dev *sdev, u32 msg_id)
 416 {
 417         struct snd_sof_pcm_stream *stream;
 418         struct sof_ipc_stream_posn posn;
 419         struct snd_sof_pcm *spcm;
 420         int direction;
 421
 422         spcm = snd_sof_find_spcm_comp(sdev, msg_id, &direction);
 423         if (!spcm) {
 424                 dev_err(sdev->dev,
 425                         "error: period elapsed for unknown stream, msg_id %d\n",
 426                         msg_id);
 427                 return;
 428         }
 429
 430         stream = &spcm->stream[direction];
 431         snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
 432
 433         dev_dbg(sdev->dev, "posn : host 0x%llx dai 0x%llx wall 0x%llx\n",
 434                 posn.host_posn, posn.dai_posn, posn.wallclock);
 435
 436         memcpy(&stream->posn, &posn, sizeof(posn));
 437
 438         /* only inform ALSA for period_wakeup mode */
 439         if (!stream->substream->runtime->no_period_wakeup)
 440                 snd_sof_pcm_period_elapsed(stream->substream);
 441 }
 442
 443 /* DSP notifies host of an XRUN within FW */
 444 static void ipc_xrun(struct snd_sof_dev *sdev, u32 msg_id)
 445 {
 446         struct snd_sof_pcm_stream *stream;
 447         struct sof_ipc_stream_posn posn;
 448         struct snd_sof_pcm *spcm;
 449         int direction;
 450
 451         spcm = snd_sof_find_spcm_comp(sdev, msg_id, &direction);
 452         if (!spcm) {
 453                 dev_err(sdev->dev, "error: XRUN for unknown stream, msg_id %d\n",
 454                         msg_id);
 455                 return;
 456         }
 457
 458         stream = &spcm->stream[direction];
 459         snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
 460
 461         dev_dbg(sdev->dev,  "posn XRUN: host %llx comp %d size %d\n",
 462                 posn.host_posn, posn.xrun_comp_id, posn.xrun_size);
 463
 464 #if defined(CONFIG_SND_SOC_SOF_DEBUG_XRUN_STOP)
 465         /* stop PCM on XRUN - used for pipeline debug */
 466         memcpy(&stream->posn, &posn, sizeof(posn));
 467         snd_pcm_stop_xrun(stream->substream);
 468 #endif
 469 }
 470
 471 /* stream notifications from DSP FW */
 472 static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd)
 473 {
 474         /* get msg cmd type and msd id */
 475         u32 msg_type = msg_cmd & SOF_CMD_TYPE_MASK;
 476         u32 msg_id = SOF_IPC_MESSAGE_ID(msg_cmd);
 477
 478         switch (msg_type) {
 479         case SOF_IPC_STREAM_POSITION:
 480                 ipc_period_elapsed(sdev, msg_id);
 481                 break;
 482         case SOF_IPC_STREAM_TRIG_XRUN:
 483                 ipc_xrun(sdev, msg_id);
 484                 break;
 485         default:
 486                 dev_err(sdev->dev, "error: unhandled stream message %x\n",
 487                         msg_id);
 488                 break;
 489         }
 490 }
 491
 492 /* get stream position IPC - use faster MMIO method if available on platform */
 493 int snd_sof_ipc_stream_posn(struct snd_sof_dev *sdev,
 494                             struct snd_sof_pcm *spcm, int direction,
 495                             struct sof_ipc_stream_posn *posn)
 496 {
 497         struct sof_ipc_stream stream;
 498         int err;
 499
 500         /* read position via slower IPC */
 501         stream.hdr.size = sizeof(stream);
 502         stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_POSITION;
 503         stream.comp_id = spcm->stream[direction].comp_id;
 504
 505         /* send IPC to the DSP */
 506         err = sof_ipc_tx_message(sdev->ipc,
 507                                  stream.hdr.cmd, &stream, sizeof(stream), &posn,
 508                                  sizeof(*posn));
 509         if (err < 0) {
 510                 dev_err(sdev->dev, "error: failed to get stream %d position\n",
 511                         stream.comp_id);
 512                 return err;
 513         }
 514
 515         return 0;
 516 }
 517 EXPORT_SYMBOL(snd_sof_ipc_stream_posn);
 518
 519 static int sof_get_ctrl_copy_params(enum sof_ipc_ctrl_type ctrl_type,
 520                                     struct sof_ipc_ctrl_data *src,
 521                                     struct sof_ipc_ctrl_data *dst,
 522                                     struct sof_ipc_ctrl_data_params *sparams)
 523 {
 524         switch (ctrl_type) {
 525         case SOF_CTRL_TYPE_VALUE_CHAN_GET:
 526         case SOF_CTRL_TYPE_VALUE_CHAN_SET:
 527                 sparams->src = (u8 *)src->chanv;
 528                 sparams->dst = (u8 *)dst->chanv;
 529                 break;
 530         case SOF_CTRL_TYPE_VALUE_COMP_GET:
 531         case SOF_CTRL_TYPE_VALUE_COMP_SET:
 532                 sparams->src = (u8 *)src->compv;
 533                 sparams->dst = (u8 *)dst->compv;
 534                 break;
 535         case SOF_CTRL_TYPE_DATA_GET:
 536         case SOF_CTRL_TYPE_DATA_SET:
 537                 sparams->src = (u8 *)src->data->data;
 538                 sparams->dst = (u8 *)dst->data->data;
 539                 break;
 540         default:
 541                 return -EINVAL;
 542         }
 543
 544         /* calculate payload size and number of messages */
 545         sparams->pl_size = SOF_IPC_MSG_MAX_SIZE - sparams->hdr_bytes;
 546         sparams->num_msg = DIV_ROUND_UP(sparams->msg_bytes, sparams->pl_size);
 547
 548         return 0;
 549 }
 550
 551 static int sof_set_get_large_ctrl_data(struct snd_sof_dev *sdev,
 552                                        struct sof_ipc_ctrl_data *cdata,
 553                                        struct sof_ipc_ctrl_data_params *sparams,
 554                                        bool send)
 555 {
 556         struct sof_ipc_ctrl_data *partdata;
 557         size_t send_bytes;
 558         size_t offset = 0;
 559         size_t msg_bytes;
 560         size_t pl_size;
 561         int err;
 562         int i;
 563
 564         /* allocate max ipc size because we have at least one */
 565         partdata = kzalloc(SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
 566         if (!partdata)
 567                 return -ENOMEM;
 568
 569         if (send)
 570                 err = sof_get_ctrl_copy_params(cdata->type, cdata, partdata,
 571                                                sparams);
 572         else
 573                 err = sof_get_ctrl_copy_params(cdata->type, partdata, cdata,
 574                                                sparams);
 575         if (err < 0)
 576                 return err;
 577
 578         msg_bytes = sparams->msg_bytes;
 579         pl_size = sparams->pl_size;
 580
 581         /* copy the header data */
 582         memcpy(partdata, cdata, sparams->hdr_bytes);
 583
 584         /* Serialise IPC TX */
 585         mutex_lock(&sdev->ipc->tx_mutex);
 586
 587         /* copy the payload data in a loop */
 588         for (i = 0; i < sparams->num_msg; i++) {
 589                 send_bytes = min(msg_bytes, pl_size);
 590                 partdata->num_elems = send_bytes;
 591                 partdata->rhdr.hdr.size = sparams->hdr_bytes + send_bytes;
 592                 partdata->msg_index = i;
 593                 msg_bytes -= send_bytes;
 594                 partdata->elems_remaining = msg_bytes;
 595
 596                 if (send)
 597                         memcpy(sparams->dst, sparams->src + offset, send_bytes);
 598
 599                 err = sof_ipc_tx_message_unlocked(sdev->ipc,
 600                                                   partdata->rhdr.hdr.cmd,
 601                                                   partdata,
 602                                                   partdata->rhdr.hdr.size,
 603                                                   partdata,
 604                                                   partdata->rhdr.hdr.size);
 605                 if (err < 0)
 606                         break;
 607
 608                 if (!send)
 609                         memcpy(sparams->dst + offset, sparams->src, send_bytes);
 610
 611                 offset += pl_size;
 612         }
 613
 614         mutex_unlock(&sdev->ipc->tx_mutex);
 615
 616         kfree(partdata);
 617         return err;
 618 }
 619
 620 /*
 621  * IPC get()/set() for kcontrols.
 622  */
 623 int snd_sof_ipc_set_get_comp_data(struct snd_sof_ipc *ipc,
 624                                   struct snd_sof_control *scontrol,
 625                                   u32 ipc_cmd,
 626                                   enum sof_ipc_ctrl_type ctrl_type,
 627                                   enum sof_ipc_ctrl_cmd ctrl_cmd,
 628                                   bool send)
 629 {
 630         struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
 631         struct snd_sof_dev *sdev = ipc->sdev;
 632         struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
 633         struct sof_ipc_fw_version *v = &ready->version;
 634         struct sof_ipc_ctrl_data_params sparams;
 635         size_t send_bytes;
 636         int err;
 637
 638         /* read or write firmware volume */
 639         if (scontrol->readback_offset != 0) {
 640                 /* write/read value header via mmaped region */
 641                 send_bytes = sizeof(struct sof_ipc_ctrl_value_chan) *
 642                 cdata->num_elems;
 643                 if (send)
 644                         snd_sof_dsp_block_write(sdev, sdev->mmio_bar,
 645                                                 scontrol->readback_offset,
 646                                                 cdata->chanv, send_bytes);
 647
 648                 else
 649                         snd_sof_dsp_block_read(sdev, sdev->mmio_bar,
 650                                                scontrol->readback_offset,
 651                                                cdata->chanv, send_bytes);
 652                 return 0;
 653         }
 654
 655         cdata->rhdr.hdr.cmd = SOF_IPC_GLB_COMP_MSG | ipc_cmd;
 656         cdata->cmd = ctrl_cmd;
 657         cdata->type = ctrl_type;
 658         cdata->comp_id = scontrol->comp_id;
 659         cdata->msg_index = 0;
 660
 661         /* calculate header and data size */
 662         switch (cdata->type) {
 663         case SOF_CTRL_TYPE_VALUE_CHAN_GET:
 664         case SOF_CTRL_TYPE_VALUE_CHAN_SET:
 665                 sparams.msg_bytes = scontrol->num_channels *
 666                         sizeof(struct sof_ipc_ctrl_value_chan);
 667                 sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data);
 668                 sparams.elems = scontrol->num_channels;
 669                 break;
 670         case SOF_CTRL_TYPE_VALUE_COMP_GET:
 671         case SOF_CTRL_TYPE_VALUE_COMP_SET:
 672                 sparams.msg_bytes = scontrol->num_channels *
 673                         sizeof(struct sof_ipc_ctrl_value_comp);
 674                 sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data);
 675                 sparams.elems = scontrol->num_channels;
 676                 break;
 677         case SOF_CTRL_TYPE_DATA_GET:
 678         case SOF_CTRL_TYPE_DATA_SET:
 679                 sparams.msg_bytes = cdata->data->size;
 680                 sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data) +
 681                         sizeof(struct sof_abi_hdr);
 682                 sparams.elems = cdata->data->size;
 683                 break;
 684         default:
 685                 return -EINVAL;
 686         }
 687
 688         cdata->rhdr.hdr.size = sparams.msg_bytes + sparams.hdr_bytes;
 689         cdata->num_elems = sparams.elems;
 690         cdata->elems_remaining = 0;
 691
 692         /* send normal size ipc in one part */
 693         if (cdata->rhdr.hdr.size <= SOF_IPC_MSG_MAX_SIZE) {
 694                 err = sof_ipc_tx_message(sdev->ipc, cdata->rhdr.hdr.cmd, cdata,
 695                                          cdata->rhdr.hdr.size, cdata,
 696                                          cdata->rhdr.hdr.size);
 697
 698                 if (err < 0)
 699                         dev_err(sdev->dev, "error: set/get ctrl ipc comp %d\n",
 700                                 cdata->comp_id);
 701
 702                 return err;
 703         }
 704
 705         /* data is bigger than max ipc size, chop into smaller pieces */
 706         dev_dbg(sdev->dev, "large ipc size %u, control size %u\n",
 707                 cdata->rhdr.hdr.size, scontrol->size);
 708
 709         /* large messages is only supported from ABI 3.3.0 onwards */
 710         if (v->abi_version < SOF_ABI_VER(3, 3, 0)) {
 711                 dev_err(sdev->dev, "error: incompatible FW ABI version\n");
 712                 return -EINVAL;
 713         }
 714
 715         err = sof_set_get_large_ctrl_data(sdev, cdata, &sparams, send);
 716
 717         if (err < 0)
 718                 dev_err(sdev->dev, "error: set/get large ctrl ipc comp %d\n",
 719                         cdata->comp_id);
 720
 721         return err;
 722 }
 723 EXPORT_SYMBOL(snd_sof_ipc_set_get_comp_data);
 724
 725 /*
 726  * IPC layer enumeration.
 727  */
 728
 729 int snd_sof_dsp_mailbox_init(struct snd_sof_dev *sdev, u32 dspbox,
 730                              size_t dspbox_size, u32 hostbox,
 731                              size_t hostbox_size)
 732 {
 733         sdev->dsp_box.offset = dspbox;
 734         sdev->dsp_box.size = dspbox_size;
 735         sdev->host_box.offset = hostbox;
 736         sdev->host_box.size = hostbox_size;
 737         return 0;
 738 }
 739 EXPORT_SYMBOL(snd_sof_dsp_mailbox_init);
 740
 741 int snd_sof_ipc_valid(struct snd_sof_dev *sdev)
 742 {
 743         struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
 744         struct sof_ipc_fw_version *v = &ready->version;
 745
 746         dev_info(sdev->dev,
 747                  "Firmware info: version %d:%d:%d-%s\n",  v->major, v->minor,
 748                  v->micro, v->tag);
 749         dev_info(sdev->dev,
 750                  "Firmware: ABI %d:%d:%d Kernel ABI %d:%d:%d\n",
 751                  SOF_ABI_VERSION_MAJOR(v->abi_version),
 752                  SOF_ABI_VERSION_MINOR(v->abi_version),
 753                  SOF_ABI_VERSION_PATCH(v->abi_version),
 754                  SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH);
 755
 756         if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, v->abi_version)) {
 757                 dev_err(sdev->dev, "error: incompatible FW ABI version\n");
 758                 return -EINVAL;
 759         }
 760
 761         if (v->abi_version > SOF_ABI_VERSION) {
 762                 if (!IS_ENABLED(CONFIG_SND_SOC_SOF_STRICT_ABI_CHECKS)) {
 763                         dev_warn(sdev->dev, "warn: FW ABI is more recent than kernel\n");
 764                 } else {
 765                         dev_err(sdev->dev, "error: FW ABI is more recent than kernel\n");
 766                         return -EINVAL;
 767                 }
 768         }
 769
 770         if (ready->flags & SOF_IPC_INFO_BUILD) {
 771                 dev_info(sdev->dev,
 772                          "Firmware debug build %d on %s-%s - options:\n"
 773                          " GDB: %s\n"
 774                          " lock debug: %s\n"
 775                          " lock vdebug: %s\n",
 776                          v->build, v->date, v->time,
 777                          (ready->flags & SOF_IPC_INFO_GDB) ?
 778                                 "enabled" : "disabled",
 779                          (ready->flags & SOF_IPC_INFO_LOCKS) ?
 780                                 "enabled" : "disabled",
 781                          (ready->flags & SOF_IPC_INFO_LOCKSV) ?
 782                                 "enabled" : "disabled");
 783         }
 784
 785         /* copy the fw_version into debugfs at first boot */
 786         memcpy(&sdev->fw_version, v, sizeof(*v));
 787
 788         return 0;
 789 }
 790 EXPORT_SYMBOL(snd_sof_ipc_valid);
 791
 792 struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev)
 793 {
 794         struct snd_sof_ipc *ipc;
 795         struct snd_sof_ipc_msg *msg;
 796
 797         /* check if mandatory ops required for ipc are defined */
 798         if (!sof_ops(sdev)->fw_ready) {
 799                 dev_err(sdev->dev, "error: ipc mandatory ops not defined\n");
 800                 return NULL;
 801         }
 802
 803         ipc = devm_kzalloc(sdev->dev, sizeof(*ipc), GFP_KERNEL);
 804         if (!ipc)
 805                 return NULL;
 806
 807         mutex_init(&ipc->tx_mutex);
 808         ipc->sdev = sdev;
 809         msg = &ipc->msg;
 810
 811         /* indicate that we aren't sending a message ATM */
 812         msg->ipc_complete = true;
 813
 814         /* pre-allocate message data */
 815         msg->msg_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE,
 816                                      GFP_KERNEL);
 817         if (!msg->msg_data)
 818                 return NULL;
 819
 820         msg->reply_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE,
 821                                        GFP_KERNEL);
 822         if (!msg->reply_data)
 823                 return NULL;
 824
 825         init_waitqueue_head(&msg->waitq);
 826
 827         return ipc;
 828 }
 829 EXPORT_SYMBOL(snd_sof_ipc_init);
 830
 831 void snd_sof_ipc_free(struct snd_sof_dev *sdev)
 832 {
 833         struct snd_sof_ipc *ipc = sdev->ipc;
 834
 835         /* disable sending of ipc's */
 836         mutex_lock(&ipc->tx_mutex);
 837         ipc->disable_ipc_tx = true;
 838         mutex_unlock(&ipc->tx_mutex);
 839 }
 840 EXPORT_SYMBOL(snd_sof_ipc_free);