sound/soc/intel/baytrail/sst-baytrail-ipc.c

   1 /*
   2  * Intel Baytrail SST IPC Support
   3  * Copyright (c) 2014, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #include <linux/types.h>
  16 #include <linux/kernel.h>
  17 #include <linux/list.h>
  18 #include <linux/device.h>
  19 #include <linux/wait.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/workqueue.h>
  22 #include <linux/export.h>
  23 #include <linux/slab.h>
  24 #include <linux/delay.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/firmware.h>
  27 #include <linux/io.h>
  28 #include <asm/div64.h>
  29
  30 #include "sst-baytrail-ipc.h"
  31 #include "../common/sst-dsp.h"
  32 #include "../common/sst-dsp-priv.h"
  33 #include "../common/sst-ipc.h"
  34
  35 /* IPC message timeout */
  36 #define IPC_TIMEOUT_MSECS       300
  37 #define IPC_BOOT_MSECS          200
  38
  39 #define IPC_EMPTY_LIST_SIZE     8
  40
  41 /* IPC header bits */
  42 #define IPC_HEADER_MSG_ID_MASK  0xff
  43 #define IPC_HEADER_MSG_ID(x)    ((x) & IPC_HEADER_MSG_ID_MASK)
  44 #define IPC_HEADER_STR_ID_SHIFT 8
  45 #define IPC_HEADER_STR_ID_MASK  0x1f
  46 #define IPC_HEADER_STR_ID(x)    (((x) & 0x1f) << IPC_HEADER_STR_ID_SHIFT)
  47 #define IPC_HEADER_LARGE_SHIFT  13
  48 #define IPC_HEADER_LARGE(x)     (((x) & 0x1) << IPC_HEADER_LARGE_SHIFT)
  49 #define IPC_HEADER_DATA_SHIFT   16
  50 #define IPC_HEADER_DATA_MASK    0x3fff
  51 #define IPC_HEADER_DATA(x)      (((x) & 0x3fff) << IPC_HEADER_DATA_SHIFT)
  52
  53 /* mask for differentiating between notification and reply message */
  54 #define IPC_NOTIFICATION        (0x1 << 7)
  55
  56 /* I2L Stream config/control msgs */
  57 #define IPC_IA_ALLOC_STREAM     0x20
  58 #define IPC_IA_FREE_STREAM      0x21
  59 #define IPC_IA_PAUSE_STREAM     0x24
  60 #define IPC_IA_RESUME_STREAM    0x25
  61 #define IPC_IA_DROP_STREAM      0x26
  62 #define IPC_IA_START_STREAM     0x30
  63
  64 /* notification messages */
  65 #define IPC_IA_FW_INIT_CMPLT    0x81
  66 #define IPC_SST_PERIOD_ELAPSED  0x97
  67
  68 /* IPC messages between host and ADSP */
  69 struct sst_byt_address_info {
  70         u32 addr;
  71         u32 size;
  72 } __packed;
  73
  74 struct sst_byt_str_type {
  75         u8 codec_type;
  76         u8 str_type;
  77         u8 operation;
  78         u8 protected_str;
  79         u8 time_slots;
  80         u8 reserved;
  81         u16 result;
  82 } __packed;
  83
  84 struct sst_byt_pcm_params {
  85         u8 num_chan;
  86         u8 pcm_wd_sz;
  87         u8 use_offload_path;
  88         u8 reserved;
  89         u32 sfreq;
  90         u8 channel_map[8];
  91 } __packed;
  92
  93 struct sst_byt_frames_info {
  94         u16 num_entries;
  95         u16 rsrvd;
  96         u32 frag_size;
  97         struct sst_byt_address_info ring_buf_info[8];
  98 } __packed;
  99
 100 struct sst_byt_alloc_params {
 101         struct sst_byt_str_type str_type;
 102         struct sst_byt_pcm_params pcm_params;
 103         struct sst_byt_frames_info frame_info;
 104 } __packed;
 105
 106 struct sst_byt_alloc_response {
 107         struct sst_byt_str_type str_type;
 108         u8 reserved[88];
 109 } __packed;
 110
 111 struct sst_byt_start_stream_params {
 112         u32 byte_offset;
 113 } __packed;
 114
 115 struct sst_byt_tstamp {
 116         u64 ring_buffer_counter;
 117         u64 hardware_counter;
 118         u64 frames_decoded;
 119         u64 bytes_decoded;
 120         u64 bytes_copied;
 121         u32 sampling_frequency;
 122         u32 channel_peak[8];
 123 } __packed;
 124
 125 struct sst_byt_fw_version {
 126         u8 build;
 127         u8 minor;
 128         u8 major;
 129         u8 type;
 130 } __packed;
 131
 132 struct sst_byt_fw_build_info {
 133         u8 date[16];
 134         u8 time[16];
 135 } __packed;
 136
 137 struct sst_byt_fw_init {
 138         struct sst_byt_fw_version fw_version;
 139         struct sst_byt_fw_build_info build_info;
 140         u16 result;
 141         u8 module_id;
 142         u8 debug_info;
 143 } __packed;
 144
 145 struct sst_byt_stream;
 146 struct sst_byt;
 147
 148 /* stream infomation */
 149 struct sst_byt_stream {
 150         struct list_head node;
 151
 152         /* configuration */
 153         struct sst_byt_alloc_params request;
 154         struct sst_byt_alloc_response reply;
 155
 156         /* runtime info */
 157         struct sst_byt *byt;
 158         int str_id;
 159         bool commited;
 160         bool running;
 161
 162         /* driver callback */
 163         u32 (*notify_position)(struct sst_byt_stream *stream, void *data);
 164         void *pdata;
 165 };
 166
 167 /* SST Baytrail IPC data */
 168 struct sst_byt {
 169         struct device *dev;
 170         struct sst_dsp *dsp;
 171
 172         /* stream */
 173         struct list_head stream_list;
 174
 175         /* boot */
 176         wait_queue_head_t boot_wait;
 177         bool boot_complete;
 178         struct sst_fw *fw;
 179
 180         /* IPC messaging */
 181         struct sst_generic_ipc ipc;
 182 };
 183
 184 static inline u64 sst_byt_header(int msg_id, int data, bool large, int str_id)
 185 {
 186         return IPC_HEADER_MSG_ID(msg_id) | IPC_HEADER_STR_ID(str_id) |
 187                IPC_HEADER_LARGE(large) | IPC_HEADER_DATA(data) |
 188                SST_BYT_IPCX_BUSY;
 189 }
 190
 191 static inline u16 sst_byt_header_msg_id(u64 header)
 192 {
 193         return header & IPC_HEADER_MSG_ID_MASK;
 194 }
 195
 196 static inline u8 sst_byt_header_str_id(u64 header)
 197 {
 198         return (header >> IPC_HEADER_STR_ID_SHIFT) & IPC_HEADER_STR_ID_MASK;
 199 }
 200
 201 static inline u16 sst_byt_header_data(u64 header)
 202 {
 203         return (header >> IPC_HEADER_DATA_SHIFT) & IPC_HEADER_DATA_MASK;
 204 }
 205
 206 static struct sst_byt_stream *sst_byt_get_stream(struct sst_byt *byt,
 207                                                  int stream_id)
 208 {
 209         struct sst_byt_stream *stream;
 210
 211         list_for_each_entry(stream, &byt->stream_list, node) {
 212                 if (stream->str_id == stream_id)
 213                         return stream;
 214         }
 215
 216         return NULL;
 217 }
 218
 219 static void sst_byt_stream_update(struct sst_byt *byt, struct ipc_message *msg)
 220 {
 221         struct sst_byt_stream *stream;
 222         u64 header = msg->header;
 223         u8 stream_id = sst_byt_header_str_id(header);
 224         u8 stream_msg = sst_byt_header_msg_id(header);
 225
 226         stream = sst_byt_get_stream(byt, stream_id);
 227         if (stream == NULL)
 228                 return;
 229
 230         switch (stream_msg) {
 231         case IPC_IA_DROP_STREAM:
 232         case IPC_IA_PAUSE_STREAM:
 233         case IPC_IA_FREE_STREAM:
 234                 stream->running = false;
 235                 break;
 236         case IPC_IA_START_STREAM:
 237         case IPC_IA_RESUME_STREAM:
 238                 stream->running = true;
 239                 break;
 240         }
 241 }
 242
 243 static int sst_byt_process_reply(struct sst_byt *byt, u64 header)
 244 {
 245         struct ipc_message *msg;
 246
 247         msg = sst_ipc_reply_find_msg(&byt->ipc, header);
 248         if (msg == NULL)
 249                 return 1;
 250
 251         if (header & IPC_HEADER_LARGE(true)) {
 252                 msg->rx_size = sst_byt_header_data(header);
 253                 sst_dsp_inbox_read(byt->dsp, msg->rx_data, msg->rx_size);
 254         }
 255
 256         /* update any stream states */
 257         sst_byt_stream_update(byt, msg);
 258
 259         list_del(&msg->list);
 260         /* wake up */
 261         sst_ipc_tx_msg_reply_complete(&byt->ipc, msg);
 262
 263         return 1;
 264 }
 265
 266 static void sst_byt_fw_ready(struct sst_byt *byt, u64 header)
 267 {
 268         dev_dbg(byt->dev, "ipc: DSP is ready 0x%llX\n", header);
 269
 270         byt->boot_complete = true;
 271         wake_up(&byt->boot_wait);
 272 }
 273
 274 static int sst_byt_process_notification(struct sst_byt *byt,
 275                                         unsigned long *flags)
 276 {
 277         struct sst_dsp *sst = byt->dsp;
 278         struct sst_byt_stream *stream;
 279         u64 header;
 280         u8 msg_id, stream_id;
 281         int handled = 1;
 282
 283         header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
 284         msg_id = sst_byt_header_msg_id(header);
 285
 286         switch (msg_id) {
 287         case IPC_SST_PERIOD_ELAPSED:
 288                 stream_id = sst_byt_header_str_id(header);
 289                 stream = sst_byt_get_stream(byt, stream_id);
 290                 if (stream && stream->running && stream->notify_position) {
 291                         spin_unlock_irqrestore(&sst->spinlock, *flags);
 292                         stream->notify_position(stream, stream->pdata);
 293                         spin_lock_irqsave(&sst->spinlock, *flags);
 294                 }
 295                 break;
 296         case IPC_IA_FW_INIT_CMPLT:
 297                 sst_byt_fw_ready(byt, header);
 298                 break;
 299         }
 300
 301         return handled;
 302 }
 303
 304 static irqreturn_t sst_byt_irq_thread(int irq, void *context)
 305 {
 306         struct sst_dsp *sst = (struct sst_dsp *) context;
 307         struct sst_byt *byt = sst_dsp_get_thread_context(sst);
 308         struct sst_generic_ipc *ipc = &byt->ipc;
 309         u64 header;
 310         unsigned long flags;
 311
 312         spin_lock_irqsave(&sst->spinlock, flags);
 313
 314         header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
 315         if (header & SST_BYT_IPCD_BUSY) {
 316                 if (header & IPC_NOTIFICATION) {
 317                         /* message from ADSP */
 318                         sst_byt_process_notification(byt, &flags);
 319                 } else {
 320                         /* reply from ADSP */
 321                         sst_byt_process_reply(byt, header);
 322                 }
 323                 /*
 324                  * clear IPCD BUSY bit and set DONE bit. Tell DSP we have
 325                  * processed the message and can accept new. Clear data part
 326                  * of the header
 327                  */
 328                 sst_dsp_shim_update_bits64_unlocked(sst, SST_IPCD,
 329                         SST_BYT_IPCD_DONE | SST_BYT_IPCD_BUSY |
 330                         IPC_HEADER_DATA(IPC_HEADER_DATA_MASK),
 331                         SST_BYT_IPCD_DONE);
 332                 /* unmask message request interrupts */
 333                 sst_dsp_shim_update_bits64_unlocked(sst, SST_IMRX,
 334                         SST_BYT_IMRX_REQUEST, 0);
 335         }
 336
 337         spin_unlock_irqrestore(&sst->spinlock, flags);
 338
 339         /* continue to send any remaining messages... */
 340         schedule_work(&ipc->kwork);
 341
 342         return IRQ_HANDLED;
 343 }
 344
 345 /* stream API */
 346 struct sst_byt_stream *sst_byt_stream_new(struct sst_byt *byt, int id,
 347         u32 (*notify_position)(struct sst_byt_stream *stream, void *data),
 348         void *data)
 349 {
 350         struct sst_byt_stream *stream;
 351         struct sst_dsp *sst = byt->dsp;
 352         unsigned long flags;
 353
 354         stream = kzalloc(sizeof(*stream), GFP_KERNEL);
 355         if (stream == NULL)
 356                 return NULL;
 357
 358         spin_lock_irqsave(&sst->spinlock, flags);
 359         list_add(&stream->node, &byt->stream_list);
 360         stream->notify_position = notify_position;
 361         stream->pdata = data;
 362         stream->byt = byt;
 363         stream->str_id = id;
 364         spin_unlock_irqrestore(&sst->spinlock, flags);
 365
 366         return stream;
 367 }
 368
 369 int sst_byt_stream_set_bits(struct sst_byt *byt, struct sst_byt_stream *stream,
 370                             int bits)
 371 {
 372         stream->request.pcm_params.pcm_wd_sz = bits;
 373         return 0;
 374 }
 375
 376 int sst_byt_stream_set_channels(struct sst_byt *byt,
 377                                 struct sst_byt_stream *stream, u8 channels)
 378 {
 379         stream->request.pcm_params.num_chan = channels;
 380         return 0;
 381 }
 382
 383 int sst_byt_stream_set_rate(struct sst_byt *byt, struct sst_byt_stream *stream,
 384                             unsigned int rate)
 385 {
 386         stream->request.pcm_params.sfreq = rate;
 387         return 0;
 388 }
 389
 390 /* stream sonfiguration */
 391 int sst_byt_stream_type(struct sst_byt *byt, struct sst_byt_stream *stream,
 392                         int codec_type, int stream_type, int operation)
 393 {
 394         stream->request.str_type.codec_type = codec_type;
 395         stream->request.str_type.str_type = stream_type;
 396         stream->request.str_type.operation = operation;
 397         stream->request.str_type.time_slots = 0xc;
 398
 399         return 0;
 400 }
 401
 402 int sst_byt_stream_buffer(struct sst_byt *byt, struct sst_byt_stream *stream,
 403                           uint32_t buffer_addr, uint32_t buffer_size)
 404 {
 405         stream->request.frame_info.num_entries = 1;
 406         stream->request.frame_info.ring_buf_info[0].addr = buffer_addr;
 407         stream->request.frame_info.ring_buf_info[0].size = buffer_size;
 408         /* calculate bytes per 4 ms fragment */
 409         stream->request.frame_info.frag_size =
 410                 stream->request.pcm_params.sfreq *
 411                 stream->request.pcm_params.num_chan *
 412                 stream->request.pcm_params.pcm_wd_sz / 8 *
 413                 4 / 1000;
 414         return 0;
 415 }
 416
 417 int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream)
 418 {
 419         struct sst_byt_alloc_params *str_req = &stream->request;
 420         struct sst_byt_alloc_response *reply = &stream->reply;
 421         u64 header;
 422         int ret;
 423
 424         header = sst_byt_header(IPC_IA_ALLOC_STREAM,
 425                                 sizeof(*str_req) + sizeof(u32),
 426                                 true, stream->str_id);
 427         ret = sst_ipc_tx_message_wait(&byt->ipc, header, str_req,
 428                                       sizeof(*str_req),
 429                                       reply, sizeof(*reply));
 430         if (ret < 0) {
 431                 dev_err(byt->dev, "ipc: error stream commit failed\n");
 432                 return ret;
 433         }
 434
 435         stream->commited = true;
 436
 437         return 0;
 438 }
 439
 440 int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream)
 441 {
 442         u64 header;
 443         int ret = 0;
 444         struct sst_dsp *sst = byt->dsp;
 445         unsigned long flags;
 446
 447         if (!stream->commited)
 448                 goto out;
 449
 450         header = sst_byt_header(IPC_IA_FREE_STREAM, 0, false, stream->str_id);
 451         ret = sst_ipc_tx_message_wait(&byt->ipc, header, NULL, 0, NULL, 0);
 452         if (ret < 0) {
 453                 dev_err(byt->dev, "ipc: free stream %d failed\n",
 454                         stream->str_id);
 455                 return -EAGAIN;
 456         }
 457
 458         stream->commited = false;
 459 out:
 460         spin_lock_irqsave(&sst->spinlock, flags);
 461         list_del(&stream->node);
 462         kfree(stream);
 463         spin_unlock_irqrestore(&sst->spinlock, flags);
 464
 465         return ret;
 466 }
 467
 468 static int sst_byt_stream_operations(struct sst_byt *byt, int type,
 469                                      int stream_id, int wait)
 470 {
 471         u64 header;
 472
 473         header = sst_byt_header(type, 0, false, stream_id);
 474         if (wait)
 475                 return sst_ipc_tx_message_wait(&byt->ipc, header, NULL,
 476                                                 0, NULL, 0);
 477         else
 478                 return sst_ipc_tx_message_nowait(&byt->ipc, header,
 479                                                 NULL, 0);
 480 }
 481
 482 /* stream ALSA trigger operations */
 483 int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream,
 484                          u32 start_offset)
 485 {
 486         struct sst_byt_start_stream_params start_stream;
 487         void *tx_msg;
 488         size_t size;
 489         u64 header;
 490         int ret;
 491
 492         start_stream.byte_offset = start_offset;
 493         header = sst_byt_header(IPC_IA_START_STREAM,
 494                                 sizeof(start_stream) + sizeof(u32),
 495                                 true, stream->str_id);
 496         tx_msg = &start_stream;
 497         size = sizeof(start_stream);
 498
 499         ret = sst_ipc_tx_message_nowait(&byt->ipc, header, tx_msg, size);
 500         if (ret < 0)
 501                 dev_err(byt->dev, "ipc: error failed to start stream %d\n",
 502                         stream->str_id);
 503
 504         return ret;
 505 }
 506
 507 int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream)
 508 {
 509         int ret;
 510
 511         /* don't stop streams that are not commited */
 512         if (!stream->commited)
 513                 return 0;
 514
 515         ret = sst_byt_stream_operations(byt, IPC_IA_DROP_STREAM,
 516                                         stream->str_id, 0);
 517         if (ret < 0)
 518                 dev_err(byt->dev, "ipc: error failed to stop stream %d\n",
 519                         stream->str_id);
 520         return ret;
 521 }
 522
 523 int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream)
 524 {
 525         int ret;
 526
 527         ret = sst_byt_stream_operations(byt, IPC_IA_PAUSE_STREAM,
 528                                         stream->str_id, 0);
 529         if (ret < 0)
 530                 dev_err(byt->dev, "ipc: error failed to pause stream %d\n",
 531                         stream->str_id);
 532
 533         return ret;
 534 }
 535
 536 int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream)
 537 {
 538         int ret;
 539
 540         ret = sst_byt_stream_operations(byt, IPC_IA_RESUME_STREAM,
 541                                         stream->str_id, 0);
 542         if (ret < 0)
 543                 dev_err(byt->dev, "ipc: error failed to resume stream %d\n",
 544                         stream->str_id);
 545
 546         return ret;
 547 }
 548
 549 int sst_byt_get_dsp_position(struct sst_byt *byt,
 550                              struct sst_byt_stream *stream, int buffer_size)
 551 {
 552         struct sst_dsp *sst = byt->dsp;
 553         struct sst_byt_tstamp fw_tstamp;
 554         u8 str_id = stream->str_id;
 555         u32 tstamp_offset;
 556
 557         tstamp_offset = SST_BYT_TIMESTAMP_OFFSET + str_id * sizeof(fw_tstamp);
 558         memcpy_fromio(&fw_tstamp,
 559                       sst->addr.lpe + tstamp_offset, sizeof(fw_tstamp));
 560
 561         return do_div(fw_tstamp.ring_buffer_counter, buffer_size);
 562 }
 563
 564 struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt)
 565 {
 566         return byt->dsp;
 567 }
 568
 569 static struct sst_dsp_device byt_dev = {
 570         .thread = sst_byt_irq_thread,
 571         .ops = &sst_byt_ops,
 572 };
 573
 574 int sst_byt_dsp_suspend_late(struct device *dev, struct sst_pdata *pdata)
 575 {
 576         struct sst_byt *byt = pdata->dsp;
 577
 578         dev_dbg(byt->dev, "dsp reset\n");
 579         sst_dsp_reset(byt->dsp);
 580         sst_ipc_drop_all(&byt->ipc);
 581         dev_dbg(byt->dev, "dsp in reset\n");
 582
 583         dev_dbg(byt->dev, "free all blocks and unload fw\n");
 584         sst_fw_unload(byt->fw);
 585
 586         return 0;
 587 }
 588 EXPORT_SYMBOL_GPL(sst_byt_dsp_suspend_late);
 589
 590 int sst_byt_dsp_boot(struct device *dev, struct sst_pdata *pdata)
 591 {
 592         struct sst_byt *byt = pdata->dsp;
 593         int ret;
 594
 595         dev_dbg(byt->dev, "reload dsp fw\n");
 596
 597         sst_dsp_reset(byt->dsp);
 598
 599         ret = sst_fw_reload(byt->fw);
 600         if (ret <  0) {
 601                 dev_err(dev, "error: failed to reload firmware\n");
 602                 return ret;
 603         }
 604
 605         /* wait for DSP boot completion */
 606         byt->boot_complete = false;
 607         sst_dsp_boot(byt->dsp);
 608         dev_dbg(byt->dev, "dsp booting...\n");
 609
 610         return 0;
 611 }
 612 EXPORT_SYMBOL_GPL(sst_byt_dsp_boot);
 613
 614 int sst_byt_dsp_wait_for_ready(struct device *dev, struct sst_pdata *pdata)
 615 {
 616         struct sst_byt *byt = pdata->dsp;
 617         int err;
 618
 619         dev_dbg(byt->dev, "wait for dsp reboot\n");
 620
 621         err = wait_event_timeout(byt->boot_wait, byt->boot_complete,
 622                                  msecs_to_jiffies(IPC_BOOT_MSECS));
 623         if (err == 0) {
 624                 dev_err(byt->dev, "ipc: error DSP boot timeout\n");
 625                 return -EIO;
 626         }
 627
 628         dev_dbg(byt->dev, "dsp rebooted\n");
 629         return 0;
 630 }
 631 EXPORT_SYMBOL_GPL(sst_byt_dsp_wait_for_ready);
 632
 633 static void byt_tx_msg(struct sst_generic_ipc *ipc, struct ipc_message *msg)
 634 {
 635         if (msg->header & IPC_HEADER_LARGE(true))
 636                 sst_dsp_outbox_write(ipc->dsp, msg->tx_data, msg->tx_size);
 637
 638         sst_dsp_shim_write64_unlocked(ipc->dsp, SST_IPCX, msg->header);
 639 }
 640
 641 static void byt_shim_dbg(struct sst_generic_ipc *ipc, const char *text)
 642 {
 643         struct sst_dsp *sst = ipc->dsp;
 644         u64 isr, ipcd, imrx, ipcx;
 645
 646         ipcx = sst_dsp_shim_read64_unlocked(sst, SST_IPCX);
 647         isr = sst_dsp_shim_read64_unlocked(sst, SST_ISRX);
 648         ipcd = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
 649         imrx = sst_dsp_shim_read64_unlocked(sst, SST_IMRX);
 650
 651         dev_err(ipc->dev,
 652                 "ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n",
 653                 text, ipcx, isr, ipcd, imrx);
 654 }
 655
 656 static void byt_tx_data_copy(struct ipc_message *msg, char *tx_data,
 657         size_t tx_size)
 658 {
 659         /* msg content = lower 32-bit of the header + data */
 660         *(u32 *)msg->tx_data = (u32)(msg->header & (u32)-1);
 661         memcpy(msg->tx_data + sizeof(u32), tx_data, tx_size);
 662         msg->tx_size += sizeof(u32);
 663 }
 664
 665 static u64 byt_reply_msg_match(u64 header, u64 *mask)
 666 {
 667         /* match reply to message sent based on msg and stream IDs */
 668         *mask = IPC_HEADER_MSG_ID_MASK |
 669                IPC_HEADER_STR_ID_MASK << IPC_HEADER_STR_ID_SHIFT;
 670         header &= *mask;
 671
 672         return header;
 673 }
 674
 675 static bool byt_is_dsp_busy(struct sst_dsp *dsp)
 676 {
 677         u64 ipcx;
 678
 679         ipcx = sst_dsp_shim_read_unlocked(dsp, SST_IPCX);
 680         return (ipcx & (SST_IPCX_BUSY | SST_IPCX_DONE));
 681 }
 682
 683 int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)
 684 {
 685         struct sst_byt *byt;
 686         struct sst_generic_ipc *ipc;
 687         struct sst_fw *byt_sst_fw;
 688         struct sst_byt_fw_init init;
 689         int err;
 690
 691         dev_dbg(dev, "initialising Byt DSP IPC\n");
 692
 693         byt = devm_kzalloc(dev, sizeof(*byt), GFP_KERNEL);
 694         if (byt == NULL)
 695                 return -ENOMEM;
 696
 697         byt->dev = dev;
 698
 699         ipc = &byt->ipc;
 700         ipc->dev = dev;
 701         ipc->ops.tx_msg = byt_tx_msg;
 702         ipc->ops.shim_dbg = byt_shim_dbg;
 703         ipc->ops.tx_data_copy = byt_tx_data_copy;
 704         ipc->ops.reply_msg_match = byt_reply_msg_match;
 705         ipc->ops.is_dsp_busy = byt_is_dsp_busy;
 706         ipc->tx_data_max_size = IPC_MAX_MAILBOX_BYTES;
 707         ipc->rx_data_max_size = IPC_MAX_MAILBOX_BYTES;
 708
 709         err = sst_ipc_init(ipc);
 710         if (err != 0)
 711                 goto ipc_init_err;
 712
 713         INIT_LIST_HEAD(&byt->stream_list);
 714         init_waitqueue_head(&byt->boot_wait);
 715         byt_dev.thread_context = byt;
 716
 717         /* init SST shim */
 718         byt->dsp = sst_dsp_new(dev, &byt_dev, pdata);
 719         if (byt->dsp == NULL) {
 720                 err = -ENODEV;
 721                 goto dsp_new_err;
 722         }
 723
 724         ipc->dsp = byt->dsp;
 725
 726         /* keep the DSP in reset state for base FW loading */
 727         sst_dsp_reset(byt->dsp);
 728
 729         byt_sst_fw = sst_fw_new(byt->dsp, pdata->fw, byt);
 730         if (byt_sst_fw  == NULL) {
 731                 err = -ENODEV;
 732                 dev_err(dev, "error: failed to load firmware\n");
 733                 goto fw_err;
 734         }
 735
 736         /* wait for DSP boot completion */
 737         sst_dsp_boot(byt->dsp);
 738         err = wait_event_timeout(byt->boot_wait, byt->boot_complete,
 739                                  msecs_to_jiffies(IPC_BOOT_MSECS));
 740         if (err == 0) {
 741                 err = -EIO;
 742                 dev_err(byt->dev, "ipc: error DSP boot timeout\n");
 743                 goto boot_err;
 744         }
 745
 746         /* show firmware information */
 747         sst_dsp_inbox_read(byt->dsp, &init, sizeof(init));
 748         dev_info(byt->dev, "FW version: %02x.%02x.%02x.%02x\n",
 749                  init.fw_version.major, init.fw_version.minor,
 750                  init.fw_version.build, init.fw_version.type);
 751         dev_info(byt->dev, "Build type: %x\n", init.fw_version.type);
 752         dev_info(byt->dev, "Build date: %s %s\n",
 753                  init.build_info.date, init.build_info.time);
 754
 755         pdata->dsp = byt;
 756         byt->fw = byt_sst_fw;
 757
 758         return 0;
 759
 760 boot_err:
 761         sst_dsp_reset(byt->dsp);
 762         sst_fw_free(byt_sst_fw);
 763 fw_err:
 764         sst_dsp_free(byt->dsp);
 765 dsp_new_err:
 766         sst_ipc_fini(ipc);
 767 ipc_init_err:
 768
 769         return err;
 770 }
 771 EXPORT_SYMBOL_GPL(sst_byt_dsp_init);
 772
 773 void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata)
 774 {
 775         struct sst_byt *byt = pdata->dsp;
 776
 777         sst_dsp_reset(byt->dsp);
 778         sst_fw_free_all(byt->dsp);
 779         sst_dsp_free(byt->dsp);
 780         sst_ipc_fini(&byt->ipc);
 781 }
 782 EXPORT_SYMBOL_GPL(sst_byt_dsp_free);