summaryrefslogtreecommitdiffstats
path: root/sound/soc/intel/sst-dsp.c
blob: 64e94212d2d2b129ebeddf9f1e4e55ac24775826 (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
/*
 * Intel Smart Sound Technology (SST) DSP Core Driver
 *
 * Copyright (C) 2013, Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/slab.h>
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/io.h>

#include "sst-dsp.h"
#include "sst-dsp-priv.h"

#define CREATE_TRACE_POINTS
#include <trace/events/intel-sst.h>

/* Internal generic low-level SST IO functions - can be overidden */
void sst_shim32_write(void __iomem *addr, u32 offset, u32 value)
{
	writel(value, addr + offset);
}
EXPORT_SYMBOL_GPL(sst_shim32_write);

u32 sst_shim32_read(void __iomem *addr, u32 offset)
{
	return readl(addr + offset);
}
EXPORT_SYMBOL_GPL(sst_shim32_read);

void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value)
{
	memcpy_toio(addr + offset, &value, sizeof(value));
}
EXPORT_SYMBOL_GPL(sst_shim32_write64);

u64 sst_shim32_read64(void __iomem *addr, u32 offset)
{
	u64 val;

	memcpy_fromio(&val, addr + offset, sizeof(val));
	return val;
}
EXPORT_SYMBOL_GPL(sst_shim32_read64);

static inline void _sst_memcpy_toio_32(volatile u32 __iomem *dest,
	u32 *src, size_t bytes)
{
	int i, words = bytes >> 2;

	for (i = 0; i < words; i++)
		writel(src[i], dest + i);
}

static inline void _sst_memcpy_fromio_32(u32 *dest,
	const volatile __iomem u32 *src, size_t bytes)
{
	int i, words = bytes >> 2;

	for (i = 0; i < words; i++)
		dest[i] = readl(src + i);
}

void sst_memcpy_toio_32(struct sst_dsp *sst,
	void __iomem *dest, void *src, size_t bytes)
{
	_sst_memcpy_toio_32(dest, src, bytes);
}
EXPORT_SYMBOL_GPL(sst_memcpy_toio_32);

void sst_memcpy_fromio_32(struct sst_dsp *sst, void *dest,
	void __iomem *src, size_t bytes)
{
	_sst_memcpy_fromio_32(dest, src, bytes);
}
EXPORT_SYMBOL_GPL(sst_memcpy_fromio_32);

/* Public API */
void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value)
{
	unsigned long flags;

	spin_lock_irqsave(&sst->spinlock, flags);
	sst->ops->write(sst->addr.shim, offset, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write);

u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset)
{
	unsigned long flags;
	u32 val;

	spin_lock_irqsave(&sst->spinlock, flags);
	val = sst->ops->read(sst->addr.shim, offset);
	spin_unlock_irqrestore(&sst->spinlock, flags);

	return val;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read);

void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value)
{
	unsigned long flags;

	spin_lock_irqsave(&sst->spinlock, flags);
	sst->ops->write64(sst->addr.shim, offset, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write64);

u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset)
{
	unsigned long flags;
	u64 val;

	spin_lock_irqsave(&sst->spinlock, flags);
	val = sst->ops->read64(sst->addr.shim, offset);
	spin_unlock_irqrestore(&sst->spinlock, flags);

	return val;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read64);

void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value)
{
	sst->ops->write(sst->addr.shim, offset, value);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write_unlocked);

u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset)
{
	return sst->ops->read(sst->addr.shim, offset);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read_unlocked);

void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value)
{
	sst->ops->write64(sst->addr.shim, offset, value);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write64_unlocked);

u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset)
{
	return sst->ops->read64(sst->addr.shim, offset);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read64_unlocked);

int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value)
{
	bool change;
	unsigned int old, new;
	u32 ret;

	ret = sst_dsp_shim_read_unlocked(sst, offset);

	old = ret;
	new = (old & (~mask)) | (value & mask);

	change = (old != new);
	if (change)
		sst_dsp_shim_write_unlocked(sst, offset, new);

	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_unlocked);

int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset,
				u64 mask, u64 value)
{
	bool change;
	u64 old, new;

	old = sst_dsp_shim_read64_unlocked(sst, offset);

	new = (old & (~mask)) | (value & mask);

	change = (old != new);
	if (change)
		sst_dsp_shim_write64_unlocked(sst, offset, new);

	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked);

int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value)
{
	unsigned long flags;
	bool change;

	spin_lock_irqsave(&sst->spinlock, flags);
	change = sst_dsp_shim_update_bits_unlocked(sst, offset, mask, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits);

int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset,
				u64 mask, u64 value)
{
	unsigned long flags;
	bool change;

	spin_lock_irqsave(&sst->spinlock, flags);
	change = sst_dsp_shim_update_bits64_unlocked(sst, offset, mask, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64);

void sst_dsp_dump(struct sst_dsp *sst)
{
	if (sst->ops->dump)
		sst->ops->dump(sst);
}
EXPORT_SYMBOL_GPL(sst_dsp_dump);

void sst_dsp_reset(struct sst_dsp *sst)
{
	if (sst->ops->reset)
		sst->ops->reset(sst);
}
EXPORT_SYMBOL_GPL(sst_dsp_reset);

int sst_dsp_boot(struct sst_dsp *sst)
{
	if (sst->ops->boot)
		sst->ops->boot(sst);

	return 0;
}
EXPORT_SYMBOL_GPL(sst_dsp_boot);

int sst_dsp_wake(struct sst_dsp *sst)
{
	if (sst->ops->wake)
		return sst->ops->wake(sst);

	return 0;
}
EXPORT_SYMBOL_GPL(sst_dsp_wake);

void sst_dsp_sleep(struct sst_dsp *sst)
{
	if (sst->ops->sleep)
		sst->ops->sleep(sst);
}
EXPORT_SYMBOL_GPL(sst_dsp_sleep);

void sst_dsp_stall(struct sst_dsp *sst)
{
	if (sst->ops->stall)
		sst->ops->stall(sst);
}
EXPORT_SYMBOL_GPL(sst_dsp_stall);

void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg)
{
	sst_dsp_shim_write_unlocked(dsp, SST_IPCX, msg | SST_IPCX_BUSY);
	trace_sst_ipc_msg_tx(msg);
}
EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_tx);

u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp)
{
	u32 msg;

	msg = sst_dsp_shim_read_unlocked(dsp, SST_IPCX);
	trace_sst_ipc_msg_rx(msg);

	return msg;
}
EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_rx);

int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset, size_t inbox_size,
	u32 outbox_offset, size_t outbox_size)
{
	sst->mailbox.in_base = sst->addr.lpe + inbox_offset;
	sst->mailbox.out_base = sst->addr.lpe + outbox_offset;
	sst->mailbox.in_size = inbox_size;
	sst->mailbox.out_size = outbox_size;
	return 0;
}
EXPORT_SYMBOL_GPL(sst_dsp_mailbox_init);

void sst_dsp_outbox_write(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_outbox_write(bytes);

	memcpy_toio(sst->mailbox.out_base, message, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_outbox_wdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_outbox_write);

void sst_dsp_outbox_read(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_outbox_read(bytes);

	memcpy_fromio(message, sst->mailbox.out_base, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_outbox_rdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_outbox_read);

void sst_dsp_inbox_write(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_inbox_write(bytes);

	memcpy_toio(sst->mailbox.in_base, message, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_inbox_wdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_inbox_write);

void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_inbox_read(bytes);

	memcpy_fromio(message, sst->mailbox.in_base, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_inbox_rdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_inbox_read);

struct sst_dsp *sst_dsp_new(struct device *dev,
	struct sst_dsp_device *sst_dev, struct sst_pdata *pdata)
{
	struct sst_dsp *sst;
	int err;

	dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id);

	sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL);
	if (sst == NULL)
		return NULL;

	spin_lock_init(&sst->spinlock);
	mutex_init(&sst->mutex);
	sst->dev = dev;
	sst->dma_dev = pdata->dma_dev;
	sst->thread_context = sst_dev->thread_context;
	sst->sst_dev = sst_dev;
	sst->id = pdata->id;
	sst->irq = pdata->irq;
	sst->ops = sst_dev->ops;
	sst->pdata = pdata;
	INIT_LIST_HEAD(&sst->used_block_list);
	INIT_LIST_HEAD(&sst->free_block_list);
	INIT_LIST_HEAD(&sst->module_list);
	INIT_LIST_HEAD(&sst->fw_list);
	INIT_LIST_HEAD(&sst->scratch_block_list);

	/* Initialise SST Audio DSP */
	if (sst->ops->init) {
		err = sst->ops->init(sst, pdata);
		if (err < 0)
			return NULL;
	}

	/* Register the ISR */
	err = request_threaded_irq(sst->irq, sst->ops->irq_handler,
		sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
	if (err)
		goto irq_err;

	err = sst_dma_new(sst);
	if (err)
		dev_warn(dev, "sst_dma_new failed %d\n", err);

	return sst;

irq_err:
	if (sst->ops->free)
		sst->ops->free(sst);

	return NULL;
}
EXPORT_SYMBOL_GPL(sst_dsp_new);

void sst_dsp_free(struct sst_dsp *sst)
{
	free_irq(sst->irq, sst);
	if (sst->ops->free)
		sst->ops->free(sst);

	sst_dma_free(sst->dma);
}
EXPORT_SYMBOL_GPL(sst_dsp_free);

/* Module information */
MODULE_AUTHOR("Liam Girdwood");
MODULE_DESCRIPTION("Intel SST Core");
MODULE_LICENSE("GPL v2");
OpenPOWER on IntegriCloud