summaryrefslogtreecommitdiff
path: root/sound/soc/sof/ipc.c
blob: 894e68cbd69d5d35ec54bf1e59e369d6f1406dce (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//
// Generic IPC layer that can work over MMIO and SPI/I2C. PHY layer provided
// by platform driver code.
//

#include <linux/mutex.h>
#include <linux/types.h>

#include "sof-priv.h"
#include "ops.h"

/*
 * IPC message default size and timeout (ms).
 * TODO: allow platforms to set size and timeout.
 */
#define IPC_TIMEOUT_MS		300

static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_id);
static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd);

/*
 * IPC message Tx/Rx message handling.
 */

/* SOF generic IPC data */
struct snd_sof_ipc {
	struct snd_sof_dev *sdev;

	/* protects messages and the disable flag */
	struct mutex tx_mutex;
	/* disables further sending of ipc's */
	bool disable_ipc_tx;

	struct snd_sof_ipc_msg msg;
};

struct sof_ipc_ctrl_data_params {
	size_t msg_bytes;
	size_t hdr_bytes;
	size_t pl_size;
	size_t elems;
	u32 num_msg;
	u8 *src;
	u8 *dst;
};

#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_VERBOSE_IPC)
static void ipc_log_header(struct device *dev, u8 *text, u32 cmd)
{
	u8 *str;
	u8 *str2 = NULL;
	u32 glb;
	u32 type;

	glb = cmd & SOF_GLB_TYPE_MASK;
	type = cmd & SOF_CMD_TYPE_MASK;

	switch (glb) {
	case SOF_IPC_GLB_REPLY:
		str = "GLB_REPLY"; break;
	case SOF_IPC_GLB_COMPOUND:
		str = "GLB_COMPOUND"; break;
	case SOF_IPC_GLB_TPLG_MSG:
		str = "GLB_TPLG_MSG";
		switch (type) {
		case SOF_IPC_TPLG_COMP_NEW:
			str2 = "COMP_NEW"; break;
		case SOF_IPC_TPLG_COMP_FREE:
			str2 = "COMP_FREE"; break;
		case SOF_IPC_TPLG_COMP_CONNECT:
			str2 = "COMP_CONNECT"; break;
		case SOF_IPC_TPLG_PIPE_NEW:
			str2 = "PIPE_NEW"; break;
		case SOF_IPC_TPLG_PIPE_FREE:
			str2 = "PIPE_FREE"; break;
		case SOF_IPC_TPLG_PIPE_CONNECT:
			str2 = "PIPE_CONNECT"; break;
		case SOF_IPC_TPLG_PIPE_COMPLETE:
			str2 = "PIPE_COMPLETE"; break;
		case SOF_IPC_TPLG_BUFFER_NEW:
			str2 = "BUFFER_NEW"; break;
		case SOF_IPC_TPLG_BUFFER_FREE:
			str2 = "BUFFER_FREE"; break;
		default:
			str2 = "unknown type"; break;
		}
		break;
	case SOF_IPC_GLB_PM_MSG:
		str = "GLB_PM_MSG";
		switch (type) {
		case SOF_IPC_PM_CTX_SAVE:
			str2 = "CTX_SAVE"; break;
		case SOF_IPC_PM_CTX_RESTORE:
			str2 = "CTX_RESTORE"; break;
		case SOF_IPC_PM_CTX_SIZE:
			str2 = "CTX_SIZE"; break;
		case SOF_IPC_PM_CLK_SET:
			str2 = "CLK_SET"; break;
		case SOF_IPC_PM_CLK_GET:
			str2 = "CLK_GET"; break;
		case SOF_IPC_PM_CLK_REQ:
			str2 = "CLK_REQ"; break;
		case SOF_IPC_PM_CORE_ENABLE:
			str2 = "CORE_ENABLE"; break;
		default:
			str2 = "unknown type"; break;
		}
		break;
	case SOF_IPC_GLB_COMP_MSG:
		str = "GLB_COMP_MSG";
		switch (type) {
		case SOF_IPC_COMP_SET_VALUE:
			str2 = "SET_VALUE"; break;
		case SOF_IPC_COMP_GET_VALUE:
			str2 = "GET_VALUE"; break;
		case SOF_IPC_COMP_SET_DATA:
			str2 = "SET_DATA"; break;
		case SOF_IPC_COMP_GET_DATA:
			str2 = "GET_DATA"; break;
		default:
			str2 = "unknown type"; break;
		}
		break;
	case SOF_IPC_GLB_STREAM_MSG:
		str = "GLB_STREAM_MSG";
		switch (type) {
		case SOF_IPC_STREAM_PCM_PARAMS:
			str2 = "PCM_PARAMS"; break;
		case SOF_IPC_STREAM_PCM_PARAMS_REPLY:
			str2 = "PCM_REPLY"; break;
		case SOF_IPC_STREAM_PCM_FREE:
			str2 = "PCM_FREE"; break;
		case SOF_IPC_STREAM_TRIG_START:
			str2 = "TRIG_START"; break;
		case SOF_IPC_STREAM_TRIG_STOP:
			str2 = "TRIG_STOP"; break;
		case SOF_IPC_STREAM_TRIG_PAUSE:
			str2 = "TRIG_PAUSE"; break;
		case SOF_IPC_STREAM_TRIG_RELEASE:
			str2 = "TRIG_RELEASE"; break;
		case SOF_IPC_STREAM_TRIG_DRAIN:
			str2 = "TRIG_DRAIN"; break;
		case SOF_IPC_STREAM_TRIG_XRUN:
			str2 = "TRIG_XRUN"; break;
		case SOF_IPC_STREAM_POSITION:
			str2 = "POSITION"; break;
		case SOF_IPC_STREAM_VORBIS_PARAMS:
			str2 = "VORBIS_PARAMS"; break;
		case SOF_IPC_STREAM_VORBIS_FREE:
			str2 = "VORBIS_FREE"; break;
		default:
			str2 = "unknown type"; break;
		}
		break;
	case SOF_IPC_FW_READY:
		str = "FW_READY"; break;
	case SOF_IPC_GLB_DAI_MSG:
		str = "GLB_DAI_MSG";
		switch (type) {
		case SOF_IPC_DAI_CONFIG:
			str2 = "CONFIG"; break;
		case SOF_IPC_DAI_LOOPBACK:
			str2 = "LOOPBACK"; break;
		default:
			str2 = "unknown type"; break;
		}
		break;
	case SOF_IPC_GLB_TRACE_MSG:
		str = "GLB_TRACE_MSG"; break;
	default:
		str = "unknown GLB command"; break;
	}

	if (str2)
		dev_dbg(dev, "%s: 0x%x: %s: %s\n", text, cmd, str, str2);
	else
		dev_dbg(dev, "%s: 0x%x: %s\n", text, cmd, str);
}
#else
static inline void ipc_log_header(struct device *dev, u8 *text, u32 cmd)
{
	dev_dbg(dev, "%s: 0x%x\n", text, cmd);
}
#endif

/* wait for IPC message reply */
static int tx_wait_done(struct snd_sof_ipc *ipc, struct snd_sof_ipc_msg *msg,
			void *reply_data)
{
	struct snd_sof_dev *sdev = ipc->sdev;
	struct sof_ipc_cmd_hdr *hdr = msg->msg_data;
	int ret;

	/* wait for DSP IPC completion */
	ret = wait_event_timeout(msg->waitq, msg->ipc_complete,
				 msecs_to_jiffies(IPC_TIMEOUT_MS));

	if (ret == 0) {
		dev_err(sdev->dev, "error: ipc timed out for 0x%x size %d\n",
			hdr->cmd, hdr->size);
		snd_sof_dsp_dbg_dump(ipc->sdev, SOF_DBG_REGS | SOF_DBG_MBOX);
		snd_sof_ipc_dump(ipc->sdev);
		snd_sof_trace_notify_for_error(ipc->sdev);
		ret = -ETIMEDOUT;
	} else {
		/* copy the data returned from DSP */
		ret = msg->reply_error;
		if (msg->reply_size)
			memcpy(reply_data, msg->reply_data, msg->reply_size);
		if (ret < 0)
			dev_err(sdev->dev, "error: ipc error for 0x%x size %zu\n",
				hdr->cmd, msg->reply_size);
		else
			ipc_log_header(sdev->dev, "ipc tx succeeded", hdr->cmd);
	}

	return ret;
}

/* send IPC message from host to DSP */
static int sof_ipc_tx_message_unlocked(struct snd_sof_ipc *ipc, u32 header,
				       void *msg_data, size_t msg_bytes,
				       void *reply_data, size_t reply_bytes)
{
	struct snd_sof_dev *sdev = ipc->sdev;
	struct snd_sof_ipc_msg *msg;
	int ret;

	if (ipc->disable_ipc_tx)
		return -ENODEV;

	/*
	 * The spin-lock is also still needed to protect message objects against
	 * other atomic contexts.
	 */
	spin_lock_irq(&sdev->ipc_lock);

	/* initialise the message */
	msg = &ipc->msg;

	msg->header = header;
	msg->msg_size = msg_bytes;
	msg->reply_size = reply_bytes;
	msg->reply_error = 0;

	/* attach any data */
	if (msg_bytes)
		memcpy(msg->msg_data, msg_data, msg_bytes);

	sdev->msg = msg;

	ret = snd_sof_dsp_send_msg(sdev, msg);
	/* Next reply that we receive will be related to this message */
	if (!ret)
		msg->ipc_complete = false;

	spin_unlock_irq(&sdev->ipc_lock);

	if (ret < 0) {
		/* So far IPC TX never fails, consider making the above void */
		dev_err_ratelimited(sdev->dev,
				    "error: ipc tx failed with error %d\n",
				    ret);
		return ret;
	}

	ipc_log_header(sdev->dev, "ipc tx", msg->header);

	/* now wait for completion */
	if (!ret)
		ret = tx_wait_done(ipc, msg, reply_data);

	return ret;
}

/* send IPC message from host to DSP */
int sof_ipc_tx_message(struct snd_sof_ipc *ipc, u32 header,
		       void *msg_data, size_t msg_bytes, void *reply_data,
		       size_t reply_bytes)
{
	int ret;

	if (msg_bytes > SOF_IPC_MSG_MAX_SIZE ||
	    reply_bytes > SOF_IPC_MSG_MAX_SIZE)
		return -ENOBUFS;

	/* Serialise IPC TX */
	mutex_lock(&ipc->tx_mutex);

	ret = sof_ipc_tx_message_unlocked(ipc, header, msg_data, msg_bytes,
					  reply_data, reply_bytes);

	mutex_unlock(&ipc->tx_mutex);

	return ret;
}
EXPORT_SYMBOL(sof_ipc_tx_message);

/* handle reply message from DSP */
int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
{
	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
	unsigned long flags;

	/*
	 * Protect against a theoretical race with sof_ipc_tx_message(): if the
	 * DSP is fast enough to receive an IPC message, reply to it, and the
	 * host interrupt processing calls this function on a different core
	 * from the one, where the sending is taking place, the message might
	 * not yet be marked as expecting a reply.
	 */
	spin_lock_irqsave(&sdev->ipc_lock, flags);

	if (msg->ipc_complete) {
		spin_unlock_irqrestore(&sdev->ipc_lock, flags);
		dev_err(sdev->dev, "error: no reply expected, received 0x%x",
			msg_id);
		return -EINVAL;
	}

	/* wake up and return the error if we have waiters on this message ? */
	msg->ipc_complete = true;
	wake_up(&msg->waitq);

	spin_unlock_irqrestore(&sdev->ipc_lock, flags);

	return 0;
}
EXPORT_SYMBOL(snd_sof_ipc_reply);

/* DSP firmware has sent host a message  */
void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev)
{
	struct sof_ipc_cmd_hdr hdr;
	u32 cmd, type;
	int err = 0;

	/* read back header */
	snd_sof_ipc_msg_data(sdev, NULL, &hdr, sizeof(hdr));
	ipc_log_header(sdev->dev, "ipc rx", hdr.cmd);

	cmd = hdr.cmd & SOF_GLB_TYPE_MASK;
	type = hdr.cmd & SOF_CMD_TYPE_MASK;

	/* check message type */
	switch (cmd) {
	case SOF_IPC_GLB_REPLY:
		dev_err(sdev->dev, "error: ipc reply unknown\n");
		break;
	case SOF_IPC_FW_READY:
		/* check for FW boot completion */
		if (!sdev->boot_complete) {
			err = sof_ops(sdev)->fw_ready(sdev, cmd);
			if (err < 0) {
				/*
				 * this indicates a mismatch in ABI
				 * between the driver and fw
				 */
				dev_err(sdev->dev, "error: ABI mismatch %d\n",
					err);
			} else {
				/* firmware boot completed OK */
				sdev->boot_complete = true;
			}

			/* wake up firmware loader */
			wake_up(&sdev->boot_wait);
		}
		break;
	case SOF_IPC_GLB_COMPOUND:
	case SOF_IPC_GLB_TPLG_MSG:
	case SOF_IPC_GLB_PM_MSG:
	case SOF_IPC_GLB_COMP_MSG:
		break;
	case SOF_IPC_GLB_STREAM_MSG:
		/* need to pass msg id into the function */
		ipc_stream_message(sdev, hdr.cmd);
		break;
	case SOF_IPC_GLB_TRACE_MSG:
		ipc_trace_message(sdev, type);
		break;
	default:
		dev_err(sdev->dev, "error: unknown DSP message 0x%x\n", cmd);
		break;
	}

	ipc_log_header(sdev->dev, "ipc rx done", hdr.cmd);
}
EXPORT_SYMBOL(snd_sof_ipc_msgs_rx);

/*
 * IPC trace mechanism.
 */

static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_id)
{
	struct sof_ipc_dma_trace_posn posn;

	switch (msg_id) {
	case SOF_IPC_TRACE_DMA_POSITION:
		/* read back full message */
		snd_sof_ipc_msg_data(sdev, NULL, &posn, sizeof(posn));
		snd_sof_trace_update_pos(sdev, &posn);
		break;
	default:
		dev_err(sdev->dev, "error: unhandled trace message %x\n",
			msg_id);
		break;
	}
}

/*
 * IPC stream position.
 */

static void ipc_period_elapsed(struct snd_sof_dev *sdev, u32 msg_id)
{
	struct snd_sof_pcm_stream *stream;
	struct sof_ipc_stream_posn posn;
	struct snd_sof_pcm *spcm;
	int direction;

	spcm = snd_sof_find_spcm_comp(sdev, msg_id, &direction);
	if (!spcm) {
		dev_err(sdev->dev,
			"error: period elapsed for unknown stream, msg_id %d\n",
			msg_id);
		return;
	}

	stream = &spcm->stream[direction];
	snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));

	dev_dbg(sdev->dev, "posn : host 0x%llx dai 0x%llx wall 0x%llx\n",
		posn.host_posn, posn.dai_posn, posn.wallclock);

	memcpy(&stream->posn, &posn, sizeof(posn));

	/* only inform ALSA for period_wakeup mode */
	if (!stream->substream->runtime->no_period_wakeup)
		snd_sof_pcm_period_elapsed(stream->substream);
}

/* DSP notifies host of an XRUN within FW */
static void ipc_xrun(struct snd_sof_dev *sdev, u32 msg_id)
{
	struct snd_sof_pcm_stream *stream;
	struct sof_ipc_stream_posn posn;
	struct snd_sof_pcm *spcm;
	int direction;

	spcm = snd_sof_find_spcm_comp(sdev, msg_id, &direction);
	if (!spcm) {
		dev_err(sdev->dev, "error: XRUN for unknown stream, msg_id %d\n",
			msg_id);
		return;
	}

	stream = &spcm->stream[direction];
	snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));

	dev_dbg(sdev->dev,  "posn XRUN: host %llx comp %d size %d\n",
		posn.host_posn, posn.xrun_comp_id, posn.xrun_size);

#if defined(CONFIG_SND_SOC_SOF_DEBUG_XRUN_STOP)
	/* stop PCM on XRUN - used for pipeline debug */
	memcpy(&stream->posn, &posn, sizeof(posn));
	snd_pcm_stop_xrun(stream->substream);
#endif
}

/* stream notifications from DSP FW */
static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd)
{
	/* get msg cmd type and msd id */
	u32 msg_type = msg_cmd & SOF_CMD_TYPE_MASK;
	u32 msg_id = SOF_IPC_MESSAGE_ID(msg_cmd);

	switch (msg_type) {
	case SOF_IPC_STREAM_POSITION:
		ipc_period_elapsed(sdev, msg_id);
		break;
	case SOF_IPC_STREAM_TRIG_XRUN:
		ipc_xrun(sdev, msg_id);
		break;
	default:
		dev_err(sdev->dev, "error: unhandled stream message %x\n",
			msg_id);
		break;
	}
}

/* get stream position IPC - use faster MMIO method if available on platform */
int snd_sof_ipc_stream_posn(struct snd_sof_dev *sdev,
			    struct snd_sof_pcm *spcm, int direction,
			    struct sof_ipc_stream_posn *posn)
{
	struct sof_ipc_stream stream;
	int err;

	/* read position via slower IPC */
	stream.hdr.size = sizeof(stream);
	stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_POSITION;
	stream.comp_id = spcm->stream[direction].comp_id;

	/* send IPC to the DSP */
	err = sof_ipc_tx_message(sdev->ipc,
				 stream.hdr.cmd, &stream, sizeof(stream), &posn,
				 sizeof(*posn));
	if (err < 0) {
		dev_err(sdev->dev, "error: failed to get stream %d position\n",
			stream.comp_id);
		return err;
	}

	return 0;
}
EXPORT_SYMBOL(snd_sof_ipc_stream_posn);

static int sof_get_ctrl_copy_params(enum sof_ipc_ctrl_type ctrl_type,
				    struct sof_ipc_ctrl_data *src,
				    struct sof_ipc_ctrl_data *dst,
				    struct sof_ipc_ctrl_data_params *sparams)
{
	switch (ctrl_type) {
	case SOF_CTRL_TYPE_VALUE_CHAN_GET:
	case SOF_CTRL_TYPE_VALUE_CHAN_SET:
		sparams->src = (u8 *)src->chanv;
		sparams->dst = (u8 *)dst->chanv;
		break;
	case SOF_CTRL_TYPE_VALUE_COMP_GET:
	case SOF_CTRL_TYPE_VALUE_COMP_SET:
		sparams->src = (u8 *)src->compv;
		sparams->dst = (u8 *)dst->compv;
		break;
	case SOF_CTRL_TYPE_DATA_GET:
	case SOF_CTRL_TYPE_DATA_SET:
		sparams->src = (u8 *)src->data->data;
		sparams->dst = (u8 *)dst->data->data;
		break;
	default:
		return -EINVAL;
	}

	/* calculate payload size and number of messages */
	sparams->pl_size = SOF_IPC_MSG_MAX_SIZE - sparams->hdr_bytes;
	sparams->num_msg = DIV_ROUND_UP(sparams->msg_bytes, sparams->pl_size);

	return 0;
}

static int sof_set_get_large_ctrl_data(struct snd_sof_dev *sdev,
				       struct sof_ipc_ctrl_data *cdata,
				       struct sof_ipc_ctrl_data_params *sparams,
				       bool send)
{
	struct sof_ipc_ctrl_data *partdata;
	size_t send_bytes;
	size_t offset = 0;
	size_t msg_bytes;
	size_t pl_size;
	int err;
	int i;

	/* allocate max ipc size because we have at least one */
	partdata = kzalloc(SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
	if (!partdata)
		return -ENOMEM;

	if (send)
		err = sof_get_ctrl_copy_params(cdata->type, cdata, partdata,
					       sparams);
	else
		err = sof_get_ctrl_copy_params(cdata->type, partdata, cdata,
					       sparams);
	if (err < 0)
		return err;

	msg_bytes = sparams->msg_bytes;
	pl_size = sparams->pl_size;

	/* copy the header data */
	memcpy(partdata, cdata, sparams->hdr_bytes);

	/* Serialise IPC TX */
	mutex_lock(&sdev->ipc->tx_mutex);

	/* copy the payload data in a loop */
	for (i = 0; i < sparams->num_msg; i++) {
		send_bytes = min(msg_bytes, pl_size);
		partdata->num_elems = send_bytes;
		partdata->rhdr.hdr.size = sparams->hdr_bytes + send_bytes;
		partdata->msg_index = i;
		msg_bytes -= send_bytes;
		partdata->elems_remaining = msg_bytes;

		if (send)
			memcpy(sparams->dst, sparams->src + offset, send_bytes);

		err = sof_ipc_tx_message_unlocked(sdev->ipc,
						  partdata->rhdr.hdr.cmd,
						  partdata,
						  partdata->rhdr.hdr.size,
						  partdata,
						  partdata->rhdr.hdr.size);
		if (err < 0)
			break;

		if (!send)
			memcpy(sparams->dst + offset, sparams->src, send_bytes);

		offset += pl_size;
	}

	mutex_unlock(&sdev->ipc->tx_mutex);

	kfree(partdata);
	return err;
}

/*
 * IPC get()/set() for kcontrols.
 */
int snd_sof_ipc_set_get_comp_data(struct snd_sof_ipc *ipc,
				  struct snd_sof_control *scontrol,
				  u32 ipc_cmd,
				  enum sof_ipc_ctrl_type ctrl_type,
				  enum sof_ipc_ctrl_cmd ctrl_cmd,
				  bool send)
{
	struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
	struct snd_sof_dev *sdev = ipc->sdev;
	struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
	struct sof_ipc_fw_version *v = &ready->version;
	struct sof_ipc_ctrl_data_params sparams;
	size_t send_bytes;
	int err;

	/* read or write firmware volume */
	if (scontrol->readback_offset != 0) {
		/* write/read value header via mmaped region */
		send_bytes = sizeof(struct sof_ipc_ctrl_value_chan) *
		cdata->num_elems;
		if (send)
			snd_sof_dsp_block_write(sdev, sdev->mmio_bar,
						scontrol->readback_offset,
						cdata->chanv, send_bytes);

		else
			snd_sof_dsp_block_read(sdev, sdev->mmio_bar,
					       scontrol->readback_offset,
					       cdata->chanv, send_bytes);
		return 0;
	}

	cdata->rhdr.hdr.cmd = SOF_IPC_GLB_COMP_MSG | ipc_cmd;
	cdata->cmd = ctrl_cmd;
	cdata->type = ctrl_type;
	cdata->comp_id = scontrol->comp_id;
	cdata->msg_index = 0;

	/* calculate header and data size */
	switch (cdata->type) {
	case SOF_CTRL_TYPE_VALUE_CHAN_GET:
	case SOF_CTRL_TYPE_VALUE_CHAN_SET:
		sparams.msg_bytes = scontrol->num_channels *
			sizeof(struct sof_ipc_ctrl_value_chan);
		sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data);
		sparams.elems = scontrol->num_channels;
		break;
	case SOF_CTRL_TYPE_VALUE_COMP_GET:
	case SOF_CTRL_TYPE_VALUE_COMP_SET:
		sparams.msg_bytes = scontrol->num_channels *
			sizeof(struct sof_ipc_ctrl_value_comp);
		sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data);
		sparams.elems = scontrol->num_channels;
		break;
	case SOF_CTRL_TYPE_DATA_GET:
	case SOF_CTRL_TYPE_DATA_SET:
		sparams.msg_bytes = cdata->data->size;
		sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data) +
			sizeof(struct sof_abi_hdr);
		sparams.elems = cdata->data->size;
		break;
	default:
		return -EINVAL;
	}

	cdata->rhdr.hdr.size = sparams.msg_bytes + sparams.hdr_bytes;
	cdata->num_elems = sparams.elems;
	cdata->elems_remaining = 0;

	/* send normal size ipc in one part */
	if (cdata->rhdr.hdr.size <= SOF_IPC_MSG_MAX_SIZE) {
		err = sof_ipc_tx_message(sdev->ipc, cdata->rhdr.hdr.cmd, cdata,
					 cdata->rhdr.hdr.size, cdata,
					 cdata->rhdr.hdr.size);

		if (err < 0)
			dev_err(sdev->dev, "error: set/get ctrl ipc comp %d\n",
				cdata->comp_id);

		return err;
	}

	/* data is bigger than max ipc size, chop into smaller pieces */
	dev_dbg(sdev->dev, "large ipc size %u, control size %u\n",
		cdata->rhdr.hdr.size, scontrol->size);

	/* large messages is only supported from ABI 3.3.0 onwards */
	if (v->abi_version < SOF_ABI_VER(3, 3, 0)) {
		dev_err(sdev->dev, "error: incompatible FW ABI version\n");
		return -EINVAL;
	}

	err = sof_set_get_large_ctrl_data(sdev, cdata, &sparams, send);

	if (err < 0)
		dev_err(sdev->dev, "error: set/get large ctrl ipc comp %d\n",
			cdata->comp_id);

	return err;
}
EXPORT_SYMBOL(snd_sof_ipc_set_get_comp_data);

/*
 * IPC layer enumeration.
 */

int snd_sof_dsp_mailbox_init(struct snd_sof_dev *sdev, u32 dspbox,
			     size_t dspbox_size, u32 hostbox,
			     size_t hostbox_size)
{
	sdev->dsp_box.offset = dspbox;
	sdev->dsp_box.size = dspbox_size;
	sdev->host_box.offset = hostbox;
	sdev->host_box.size = hostbox_size;
	return 0;
}
EXPORT_SYMBOL(snd_sof_dsp_mailbox_init);

int snd_sof_ipc_valid(struct snd_sof_dev *sdev)
{
	struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
	struct sof_ipc_fw_version *v = &ready->version;

	dev_info(sdev->dev,
		 "Firmware info: version %d:%d:%d-%s\n",  v->major, v->minor,
		 v->micro, v->tag);
	dev_info(sdev->dev,
		 "Firmware: ABI %d:%d:%d Kernel ABI %d:%d:%d\n",
		 SOF_ABI_VERSION_MAJOR(v->abi_version),
		 SOF_ABI_VERSION_MINOR(v->abi_version),
		 SOF_ABI_VERSION_PATCH(v->abi_version),
		 SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH);

	if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, v->abi_version)) {
		dev_err(sdev->dev, "error: incompatible FW ABI version\n");
		return -EINVAL;
	}

	if (v->abi_version > SOF_ABI_VERSION) {
		if (!IS_ENABLED(CONFIG_SND_SOC_SOF_STRICT_ABI_CHECKS)) {
			dev_warn(sdev->dev, "warn: FW ABI is more recent than kernel\n");
		} else {
			dev_err(sdev->dev, "error: FW ABI is more recent than kernel\n");
			return -EINVAL;
		}
	}

	if (ready->debug.bits.build) {
		dev_info(sdev->dev,
			 "Firmware debug build %d on %s-%s - options:\n"
			 " GDB: %s\n"
			 " lock debug: %s\n"
			 " lock vdebug: %s\n",
			 v->build, v->date, v->time,
			 ready->debug.bits.gdb ? "enabled" : "disabled",
			 ready->debug.bits.locks ? "enabled" : "disabled",
			 ready->debug.bits.locks_verbose ? "enabled" : "disabled");
	}

	/* copy the fw_version into debugfs at first boot */
	memcpy(&sdev->fw_version, v, sizeof(*v));

	return 0;
}
EXPORT_SYMBOL(snd_sof_ipc_valid);

struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev)
{
	struct snd_sof_ipc *ipc;
	struct snd_sof_ipc_msg *msg;

	/* check if mandatory ops required for ipc are defined */
	if (!sof_ops(sdev)->fw_ready) {
		dev_err(sdev->dev, "error: ipc mandatory ops not defined\n");
		return NULL;
	}

	ipc = devm_kzalloc(sdev->dev, sizeof(*ipc), GFP_KERNEL);
	if (!ipc)
		return NULL;

	mutex_init(&ipc->tx_mutex);
	ipc->sdev = sdev;
	msg = &ipc->msg;

	/* indicate that we aren't sending a message ATM */
	msg->ipc_complete = true;

	/* pre-allocate message data */
	msg->msg_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE,
				     GFP_KERNEL);
	if (!msg->msg_data)
		return NULL;

	msg->reply_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE,
				       GFP_KERNEL);
	if (!msg->reply_data)
		return NULL;

	init_waitqueue_head(&msg->waitq);

	return ipc;
}
EXPORT_SYMBOL(snd_sof_ipc_init);

void snd_sof_ipc_free(struct snd_sof_dev *sdev)
{
	struct snd_sof_ipc *ipc = sdev->ipc;

	/* disable sending of ipc's */
	mutex_lock(&ipc->tx_mutex);
	ipc->disable_ipc_tx = true;
	mutex_unlock(&ipc->tx_mutex);
}
EXPORT_SYMBOL(snd_sof_ipc_free);