Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Loading...
  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
/*
 * skl-sst.c - HDA DSP library functions for SKL platform
 *
 * Copyright (C) 2014-15, Intel Corporation.
 * Author:Rafal Redzimski <rafal.f.redzimski@intel.com>
 *	Jeeja KP <jeeja.kp@intel.com>
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as 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/module.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/uuid.h>
#include "../common/sst-dsp.h"
#include "../common/sst-dsp-priv.h"
#include "../common/sst-ipc.h"
#include "skl-sst-ipc.h"

#define SKL_BASEFW_TIMEOUT	300
#define SKL_INIT_TIMEOUT	1000

/* Intel HD Audio SRAM Window 0*/
#define SKL_ADSP_SRAM0_BASE	0x8000

/* Firmware status window */
#define SKL_ADSP_FW_STATUS	SKL_ADSP_SRAM0_BASE
#define SKL_ADSP_ERROR_CODE	(SKL_ADSP_FW_STATUS + 0x4)

#define SKL_NUM_MODULES		1

static bool skl_check_fw_status(struct sst_dsp *ctx, u32 status)
{
	u32 cur_sts;

	cur_sts = sst_dsp_shim_read(ctx, SKL_ADSP_FW_STATUS) & SKL_FW_STS_MASK;

	return (cur_sts == status);
}

static int skl_transfer_firmware(struct sst_dsp *ctx,
		const void *basefw, u32 base_fw_size)
{
	int ret = 0;

	ret = ctx->cl_dev.ops.cl_copy_to_dmabuf(ctx, basefw, base_fw_size);
	if (ret < 0)
		return ret;

	ret = sst_dsp_register_poll(ctx,
			SKL_ADSP_FW_STATUS,
			SKL_FW_STS_MASK,
			SKL_FW_RFW_START,
			SKL_BASEFW_TIMEOUT,
			"Firmware boot");

	ctx->cl_dev.ops.cl_stop_dma(ctx);

	return ret;
}

#define SKL_ADSP_FW_BIN_HDR_OFFSET 0x284

static int skl_load_base_firmware(struct sst_dsp *ctx)
{
	int ret = 0, i;
	struct skl_sst *skl = ctx->thread_context;
	struct firmware stripped_fw;
	u32 reg;

	skl->boot_complete = false;
	init_waitqueue_head(&skl->boot_wait);

	if (ctx->fw == NULL) {
		ret = request_firmware(&ctx->fw, ctx->fw_name, ctx->dev);
		if (ret < 0) {
			dev_err(ctx->dev, "Request firmware failed %d\n", ret);
			return -EIO;
		}
	}

	/* prase uuids on first boot */
	if (skl->is_first_boot) {
		ret = snd_skl_parse_uuids(ctx, ctx->fw, SKL_ADSP_FW_BIN_HDR_OFFSET, 0);
		if (ret < 0) {
			dev_err(ctx->dev, "UUID parsing err: %d\n", ret);
			release_firmware(ctx->fw);
			skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
			return ret;
		}
	}

	/* check for extended manifest */
	stripped_fw.data = ctx->fw->data;
	stripped_fw.size = ctx->fw->size;

	skl_dsp_strip_extended_manifest(&stripped_fw);

	ret = skl_dsp_boot(ctx);
	if (ret < 0) {
		dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret);
		goto skl_load_base_firmware_failed;
	}

	ret = skl_cldma_prepare(ctx);
	if (ret < 0) {
		dev_err(ctx->dev, "CL dma prepare failed : %d\n", ret);
		goto skl_load_base_firmware_failed;
	}

	/* enable Interrupt */
	skl_ipc_int_enable(ctx);
	skl_ipc_op_int_enable(ctx);

	/* check ROM Status */
	for (i = SKL_INIT_TIMEOUT; i > 0; --i) {
		if (skl_check_fw_status(ctx, SKL_FW_INIT)) {
			dev_dbg(ctx->dev,
				"ROM loaded, we can continue with FW loading\n");
			break;
		}
		mdelay(1);
	}
	if (!i) {
		reg = sst_dsp_shim_read(ctx, SKL_ADSP_FW_STATUS);
		dev_err(ctx->dev,
			"Timeout waiting for ROM init done, reg:0x%x\n", reg);
		ret = -EIO;
		goto transfer_firmware_failed;
	}

	ret = skl_transfer_firmware(ctx, stripped_fw.data, stripped_fw.size);
	if (ret < 0) {
		dev_err(ctx->dev, "Transfer firmware failed%d\n", ret);
		goto transfer_firmware_failed;
	} else {
		ret = wait_event_timeout(skl->boot_wait, skl->boot_complete,
					msecs_to_jiffies(SKL_IPC_BOOT_MSECS));
		if (ret == 0) {
			dev_err(ctx->dev, "DSP boot failed, FW Ready timed-out\n");
			ret = -EIO;
			goto transfer_firmware_failed;
		}

		dev_dbg(ctx->dev, "Download firmware successful%d\n", ret);
		skl->fw_loaded = true;
	}
	return 0;
transfer_firmware_failed:
	ctx->cl_dev.ops.cl_cleanup_controller(ctx);
skl_load_base_firmware_failed:
	skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
	release_firmware(ctx->fw);
	ctx->fw = NULL;
	return ret;
}

static int skl_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id)
{
	int ret;
	struct skl_ipc_dxstate_info dx;
	struct skl_sst *skl = ctx->thread_context;
	unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);

	/* If core0 is being turned on, we need to load the FW */
	if (core_id == SKL_DSP_CORE0_ID) {
		ret = skl_load_base_firmware(ctx);
		if (ret < 0) {
			dev_err(ctx->dev, "unable to load firmware\n");
			return ret;
		}
	}

	/*
	 * If any core other than core 0 is being moved to D0, enable the
	 * core and send the set dx IPC for the core.
	 */
	if (core_id != SKL_DSP_CORE0_ID) {
		ret = skl_dsp_enable_core(ctx, core_mask);
		if (ret < 0)
			return ret;

		dx.core_mask = core_mask;
		dx.dx_mask = core_mask;

		ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID,
					SKL_BASE_FW_MODULE_ID, &dx);
		if (ret < 0) {
			dev_err(ctx->dev, "Failed to set dsp to D0:core id= %d\n",
					core_id);
			skl_dsp_disable_core(ctx, core_mask);
		}
	}

	skl->cores.state[core_id] = SKL_DSP_RUNNING;

	return ret;
}

static int skl_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id)
{
	int ret;
	struct skl_ipc_dxstate_info dx;
	struct skl_sst *skl = ctx->thread_context;
	unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);

	dx.core_mask = core_mask;
	dx.dx_mask = SKL_IPC_D3_MASK;

	ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID, SKL_BASE_FW_MODULE_ID, &dx);
	if (ret < 0)
		dev_err(ctx->dev, "set Dx core %d fail: %d\n", core_id, ret);

	if (core_id == SKL_DSP_CORE0_ID) {
		/* disable Interrupt */
		ctx->cl_dev.ops.cl_cleanup_controller(ctx);
		skl_cldma_int_disable(ctx);
		skl_ipc_op_int_disable(ctx);
		skl_ipc_int_disable(ctx);
	}

	ret = skl_dsp_disable_core(ctx, core_mask);
	if (ret < 0)
		return ret;

	skl->cores.state[core_id] = SKL_DSP_RESET;
	return ret;
}

static unsigned int skl_get_errorcode(struct sst_dsp *ctx)
{
	 return sst_dsp_shim_read(ctx, SKL_ADSP_ERROR_CODE);
}

/*
 * since get/set_module are called from DAPM context,
 * we don't need lock for usage count
 */
static int skl_get_module(struct sst_dsp *ctx, u16 mod_id)
{
	struct skl_module_table *module;

	list_for_each_entry(module, &ctx->module_list, list) {
		if (module->mod_info->mod_id == mod_id)
			return ++module->usage_cnt;
	}

	return -EINVAL;
}

static int skl_put_module(struct sst_dsp *ctx, u16 mod_id)
{
	struct skl_module_table *module;

	list_for_each_entry(module, &ctx->module_list, list) {
		if (module->mod_info->mod_id == mod_id)
			return --module->usage_cnt;
	}

	return -EINVAL;
}

static struct skl_module_table *skl_fill_module_table(struct sst_dsp *ctx,
						char *mod_name, int mod_id)
{
	const struct firmware *fw;
	struct skl_module_table *skl_module;
	unsigned int size;
	int ret;

	ret = request_firmware(&fw, mod_name, ctx->dev);
	if (ret < 0) {
		dev_err(ctx->dev, "Request Module %s failed :%d\n",
							mod_name, ret);
		return NULL;
	}

	skl_module = devm_kzalloc(ctx->dev, sizeof(*skl_module), GFP_KERNEL);
	if (skl_module == NULL) {
		release_firmware(fw);
		return NULL;
	}

	size = sizeof(*skl_module->mod_info);
	skl_module->mod_info = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
	if (skl_module->mod_info == NULL) {
		release_firmware(fw);
		return NULL;
	}

	skl_module->mod_info->mod_id = mod_id;
	skl_module->mod_info->fw = fw;
	list_add(&skl_module->list, &ctx->module_list);

	return skl_module;
}

/* get a module from it's unique ID */
static struct skl_module_table *skl_module_get_from_id(
			struct sst_dsp *ctx, u16 mod_id)
{
	struct skl_module_table *module;

	if (list_empty(&ctx->module_list)) {
		dev_err(ctx->dev, "Module list is empty\n");
		return NULL;
	}

	list_for_each_entry(module, &ctx->module_list, list) {
		if (module->mod_info->mod_id == mod_id)
			return module;
	}

	return NULL;
}

static int skl_transfer_module(struct sst_dsp *ctx,
			struct skl_load_module_info *module)
{
	int ret;
	struct skl_sst *skl = ctx->thread_context;

	ret = ctx->cl_dev.ops.cl_copy_to_dmabuf(ctx, module->fw->data,
							module->fw->size);
	if (ret < 0)
		return ret;

	ret = skl_ipc_load_modules(&skl->ipc, SKL_NUM_MODULES,
						(void *)&module->mod_id);
	if (ret < 0)
		dev_err(ctx->dev, "Failed to Load module: %d\n", ret);

	ctx->cl_dev.ops.cl_stop_dma(ctx);

	return ret;
}

static int skl_load_module(struct sst_dsp *ctx, u16 mod_id, u8 *guid)
{
	struct skl_module_table *module_entry = NULL;
	int ret = 0;
	char mod_name[64]; /* guid str = 32 chars + 4 hyphens */
	uuid_le *uuid_mod;

	uuid_mod = (uuid_le *)guid;
	snprintf(mod_name, sizeof(mod_name), "%s%pUL%s",
				"intel/dsp_fw_", uuid_mod, ".bin");

	module_entry = skl_module_get_from_id(ctx, mod_id);
	if (module_entry == NULL) {
		module_entry = skl_fill_module_table(ctx, mod_name, mod_id);
		if (module_entry == NULL) {
			dev_err(ctx->dev, "Failed to Load module\n");
			return -EINVAL;
		}
	}

	if (!module_entry->usage_cnt) {
		ret = skl_transfer_module(ctx, module_entry->mod_info);
		if (ret < 0) {
			dev_err(ctx->dev, "Failed to Load module\n");
			return ret;
		}
	}

	ret = skl_get_module(ctx, mod_id);

	return ret;
}

static int skl_unload_module(struct sst_dsp *ctx, u16 mod_id)
{
	int usage_cnt;
	struct skl_sst *skl = ctx->thread_context;
	int ret = 0;

	usage_cnt = skl_put_module(ctx, mod_id);
	if (usage_cnt < 0) {
		dev_err(ctx->dev, "Module bad usage cnt!:%d\n", usage_cnt);
		return -EIO;
	}
	ret = skl_ipc_unload_modules(&skl->ipc,
			SKL_NUM_MODULES, &mod_id);
	if (ret < 0) {
		dev_err(ctx->dev, "Failed to UnLoad module\n");
		skl_get_module(ctx, mod_id);
		return ret;
	}

	return ret;
}

void skl_clear_module_cnt(struct sst_dsp *ctx)
{
	struct skl_module_table *module;

	if (list_empty(&ctx->module_list))
		return;

	list_for_each_entry(module, &ctx->module_list, list) {
		module->usage_cnt = 0;
	}
}
EXPORT_SYMBOL_GPL(skl_clear_module_cnt);

static void skl_clear_module_table(struct sst_dsp *ctx)
{
	struct skl_module_table *module, *tmp;

	if (list_empty(&ctx->module_list))
		return;

	list_for_each_entry_safe(module, tmp, &ctx->module_list, list) {
		list_del(&module->list);
		release_firmware(module->mod_info->fw);
	}
}

static struct skl_dsp_fw_ops skl_fw_ops = {
	.set_state_D0 = skl_set_dsp_D0,
	.set_state_D3 = skl_set_dsp_D3,
	.load_fw = skl_load_base_firmware,
	.get_fw_errcode = skl_get_errorcode,
	.load_mod = skl_load_module,
	.unload_mod = skl_unload_module,
};

static struct sst_ops skl_ops = {
	.irq_handler = skl_dsp_sst_interrupt,
	.write = sst_shim32_write,
	.read = sst_shim32_read,
	.ram_read = sst_memcpy_fromio_32,
	.ram_write = sst_memcpy_toio_32,
	.free = skl_dsp_free,
};

static struct sst_dsp_device skl_dev = {
	.thread = skl_dsp_irq_thread_handler,
	.ops = &skl_ops,
};

int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
		const char *fw_name, struct skl_dsp_loader_ops dsp_ops, struct skl_sst **dsp)
{
	struct skl_sst *skl;
	struct sst_dsp *sst;
	int ret;

	skl = devm_kzalloc(dev, sizeof(*skl), GFP_KERNEL);
	if (skl == NULL)
		return -ENOMEM;

	skl->dev = dev;
	skl_dev.thread_context = skl;
	INIT_LIST_HEAD(&skl->uuid_list);

	skl->dsp = skl_dsp_ctx_init(dev, &skl_dev, irq);
	if (!skl->dsp) {
		dev_err(skl->dev, "%s: no device\n", __func__);
		return -ENODEV;
	}

	sst = skl->dsp;

	sst->fw_name = fw_name;
	sst->addr.lpe = mmio_base;
	sst->addr.shim = mmio_base;
	sst_dsp_mailbox_init(sst, (SKL_ADSP_SRAM0_BASE + SKL_ADSP_W0_STAT_SZ),
			SKL_ADSP_W0_UP_SZ, SKL_ADSP_SRAM1_BASE, SKL_ADSP_W1_SZ);

	INIT_LIST_HEAD(&sst->module_list);
	sst->dsp_ops = dsp_ops;
	sst->fw_ops = skl_fw_ops;

	ret = skl_ipc_init(dev, skl);
	if (ret)
		return ret;

	skl->cores.count = 2;
	skl->is_first_boot = true;

	if (dsp)
		*dsp = skl;

	return ret;
}
EXPORT_SYMBOL_GPL(skl_sst_dsp_init);

int skl_sst_init_fw(struct device *dev, struct skl_sst *ctx)
{
	int ret;
	struct sst_dsp *sst = ctx->dsp;

	ret = sst->fw_ops.load_fw(sst);
	if (ret < 0) {
		dev_err(dev, "Load base fw failed : %d\n", ret);
		return ret;
	}

	skl_dsp_init_core_state(sst);
	ctx->is_first_boot = false;

	return 0;
}
EXPORT_SYMBOL_GPL(skl_sst_init_fw);

void skl_sst_dsp_cleanup(struct device *dev, struct skl_sst *ctx)
{

	if (ctx->dsp->fw)
		release_firmware(ctx->dsp->fw);
	skl_clear_module_table(ctx->dsp);
	skl_freeup_uuid_list(ctx);
	skl_ipc_free(&ctx->ipc);
	ctx->dsp->ops->free(ctx->dsp);
	if (ctx->boot_complete) {
		ctx->dsp->cl_dev.ops.cl_cleanup_controller(ctx->dsp);
		skl_cldma_int_disable(ctx->dsp);
	}
}
EXPORT_SYMBOL_GPL(skl_sst_dsp_cleanup);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel Skylake IPC driver");