summaryrefslogtreecommitdiffstats
path: root/drivers/remoteproc/qcom_q6v5_adsp.c
blob: e953886b2eb7780b695f47045cf267deaeb2d090 (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Qualcomm Technology Inc. ADSP Peripheral Image Loader for SDM845.
 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/remoteproc.h>
#include <linux/reset.h>
#include <linux/soc/qcom/mdt_loader.h>
#include <linux/soc/qcom/smem.h>
#include <linux/soc/qcom/smem_state.h>

#include "qcom_common.h"
#include "qcom_q6v5.h"
#include "remoteproc_internal.h"

/* time out value */
#define ACK_TIMEOUT			1000
#define BOOT_FSM_TIMEOUT		10000
/* mask values */
#define EVB_MASK			GENMASK(27, 4)
/*QDSP6SS register offsets*/
#define RST_EVB_REG			0x10
#define CORE_START_REG			0x400
#define BOOT_CMD_REG			0x404
#define BOOT_STATUS_REG			0x408
#define RET_CFG_REG			0x1C
/*TCSR register offsets*/
#define LPASS_MASTER_IDLE_REG		0x8
#define LPASS_HALTACK_REG		0x4
#define LPASS_PWR_ON_REG		0x10
#define LPASS_HALTREQ_REG		0x0

#define QDSP6SS_XO_CBCR		0x38
#define QDSP6SS_CORE_CBCR	0x20
#define QDSP6SS_SLEEP_CBCR	0x3c

struct adsp_pil_data {
	int crash_reason_smem;
	const char *firmware_name;

	const char *ssr_name;
	const char *sysmon_name;
	int ssctl_id;

	const char **clk_ids;
	int num_clks;
};

struct qcom_adsp {
	struct device *dev;
	struct rproc *rproc;

	struct qcom_q6v5 q6v5;

	struct clk *xo;

	int num_clks;
	struct clk_bulk_data *clks;

	void __iomem *qdsp6ss_base;

	struct reset_control *pdc_sync_reset;
	struct reset_control *restart;

	struct regmap *halt_map;
	unsigned int halt_lpass;

	int crash_reason_smem;

	struct completion start_done;
	struct completion stop_done;

	phys_addr_t mem_phys;
	phys_addr_t mem_reloc;
	void *mem_region;
	size_t mem_size;

	struct qcom_rproc_glink glink_subdev;
	struct qcom_rproc_ssr ssr_subdev;
	struct qcom_sysmon *sysmon;
};

static int qcom_adsp_shutdown(struct qcom_adsp *adsp)
{
	unsigned long timeout;
	unsigned int val;
	int ret;

	/* Reset the retention logic */
	val = readl(adsp->qdsp6ss_base + RET_CFG_REG);
	val |= 0x1;
	writel(val, adsp->qdsp6ss_base + RET_CFG_REG);

	clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);

	/* QDSP6 master port needs to be explicitly halted */
	ret = regmap_read(adsp->halt_map,
			adsp->halt_lpass + LPASS_PWR_ON_REG, &val);
	if (ret || !val)
		goto reset;

	ret = regmap_read(adsp->halt_map,
			adsp->halt_lpass + LPASS_MASTER_IDLE_REG,
			&val);
	if (ret || val)
		goto reset;

	regmap_write(adsp->halt_map,
			adsp->halt_lpass + LPASS_HALTREQ_REG, 1);

	/* Wait for halt ACK from QDSP6 */
	timeout = jiffies + msecs_to_jiffies(ACK_TIMEOUT);
	for (;;) {
		ret = regmap_read(adsp->halt_map,
			adsp->halt_lpass + LPASS_HALTACK_REG, &val);
		if (ret || val || time_after(jiffies, timeout))
			break;

		usleep_range(1000, 1100);
	}

	ret = regmap_read(adsp->halt_map,
			adsp->halt_lpass + LPASS_MASTER_IDLE_REG, &val);
	if (ret || !val)
		dev_err(adsp->dev, "port failed halt\n");

reset:
	/* Assert the LPASS PDC Reset */
	reset_control_assert(adsp->pdc_sync_reset);
	/* Place the LPASS processor into reset */
	reset_control_assert(adsp->restart);
	/* wait after asserting subsystem restart from AOSS */
	usleep_range(200, 300);

	/* Clear the halt request for the AXIM and AHBM for Q6 */
	regmap_write(adsp->halt_map, adsp->halt_lpass + LPASS_HALTREQ_REG, 0);

	/* De-assert the LPASS PDC Reset */
	reset_control_deassert(adsp->pdc_sync_reset);
	/* Remove the LPASS reset */
	reset_control_deassert(adsp->restart);
	/* wait after de-asserting subsystem restart from AOSS */
	usleep_range(200, 300);

	return 0;
}

static int adsp_load(struct rproc *rproc, const struct firmware *fw)
{
	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;

	return qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
			     adsp->mem_region, adsp->mem_phys, adsp->mem_size,
			     &adsp->mem_reloc);
}

static int adsp_start(struct rproc *rproc)
{
	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
	int ret;
	unsigned int val;

	qcom_q6v5_prepare(&adsp->q6v5);

	ret = clk_prepare_enable(adsp->xo);
	if (ret)
		goto disable_irqs;

	dev_pm_genpd_set_performance_state(adsp->dev, INT_MAX);
	ret = pm_runtime_get_sync(adsp->dev);
	if (ret)
		goto disable_xo_clk;

	ret = clk_bulk_prepare_enable(adsp->num_clks, adsp->clks);
	if (ret) {
		dev_err(adsp->dev, "adsp clk_enable failed\n");
		goto disable_power_domain;
	}

	/* Enable the XO clock */
	writel(1, adsp->qdsp6ss_base + QDSP6SS_XO_CBCR);

	/* Enable the QDSP6SS sleep clock */
	writel(1, adsp->qdsp6ss_base + QDSP6SS_SLEEP_CBCR);

	/* Enable the QDSP6 core clock */
	writel(1, adsp->qdsp6ss_base + QDSP6SS_CORE_CBCR);

	/* Program boot address */
	writel(adsp->mem_phys >> 4, adsp->qdsp6ss_base + RST_EVB_REG);

	/* De-assert QDSP6 stop core. QDSP6 will execute after out of reset */
	writel(0x1, adsp->qdsp6ss_base + CORE_START_REG);

	/* Trigger boot FSM to start QDSP6 */
	writel(0x1, adsp->qdsp6ss_base + BOOT_CMD_REG);

	/* Wait for core to come out of reset */
	ret = readl_poll_timeout(adsp->qdsp6ss_base + BOOT_STATUS_REG,
			val, (val & BIT(0)) != 0, 10, BOOT_FSM_TIMEOUT);
	if (ret) {
		dev_err(adsp->dev, "failed to bootup adsp\n");
		goto disable_adsp_clks;
	}

	ret = qcom_q6v5_wait_for_start(&adsp->q6v5, msecs_to_jiffies(5 * HZ));
	if (ret == -ETIMEDOUT) {
		dev_err(adsp->dev, "start timed out\n");
		goto disable_adsp_clks;
	}

	return 0;

disable_adsp_clks:
	clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);
disable_power_domain:
	dev_pm_genpd_set_performance_state(adsp->dev, 0);
	pm_runtime_put(adsp->dev);
disable_xo_clk:
	clk_disable_unprepare(adsp->xo);
disable_irqs:
	qcom_q6v5_unprepare(&adsp->q6v5);

	return ret;
}

static void qcom_adsp_pil_handover(struct qcom_q6v5 *q6v5)
{
	struct qcom_adsp *adsp = container_of(q6v5, struct qcom_adsp, q6v5);

	clk_disable_unprepare(adsp->xo);
	dev_pm_genpd_set_performance_state(adsp->dev, 0);
	pm_runtime_put(adsp->dev);
}

static int adsp_stop(struct rproc *rproc)
{
	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
	int handover;
	int ret;

	ret = qcom_q6v5_request_stop(&adsp->q6v5);
	if (ret == -ETIMEDOUT)
		dev_err(adsp->dev, "timed out on wait\n");

	ret = qcom_adsp_shutdown(adsp);
	if (ret)
		dev_err(adsp->dev, "failed to shutdown: %d\n", ret);

	handover = qcom_q6v5_unprepare(&adsp->q6v5);
	if (handover)
		qcom_adsp_pil_handover(&adsp->q6v5);

	return ret;
}

static void *adsp_da_to_va(struct rproc *rproc, u64 da, int len)
{
	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
	int offset;

	offset = da - adsp->mem_reloc;
	if (offset < 0 || offset + len > adsp->mem_size)
		return NULL;

	return adsp->mem_region + offset;
}

static const struct rproc_ops adsp_ops = {
	.start = adsp_start,
	.stop = adsp_stop,
	.da_to_va = adsp_da_to_va,
	.parse_fw = qcom_register_dump_segments,
	.load = adsp_load,
};

static int adsp_init_clock(struct qcom_adsp *adsp, const char **clk_ids)
{
	int num_clks = 0;
	int i, ret;

	adsp->xo = devm_clk_get(adsp->dev, "xo");
	if (IS_ERR(adsp->xo)) {
		ret = PTR_ERR(adsp->xo);
		if (ret != -EPROBE_DEFER)
			dev_err(adsp->dev, "failed to get xo clock");
		return ret;
	}

	for (i = 0; clk_ids[i]; i++)
		num_clks++;

	adsp->num_clks = num_clks;
	adsp->clks = devm_kcalloc(adsp->dev, adsp->num_clks,
				sizeof(*adsp->clks), GFP_KERNEL);
	if (!adsp->clks)
		return -ENOMEM;

	for (i = 0; i < adsp->num_clks; i++)
		adsp->clks[i].id = clk_ids[i];

	return devm_clk_bulk_get(adsp->dev, adsp->num_clks, adsp->clks);
}

static int adsp_init_reset(struct qcom_adsp *adsp)
{
	adsp->pdc_sync_reset = devm_reset_control_get_optional_exclusive(adsp->dev,
			"pdc_sync");
	if (IS_ERR(adsp->pdc_sync_reset)) {
		dev_err(adsp->dev, "failed to acquire pdc_sync reset\n");
		return PTR_ERR(adsp->pdc_sync_reset);
	}

	adsp->restart = devm_reset_control_get_optional_exclusive(adsp->dev, "restart");

	/* Fall back to the  old "cc_lpass" if "restart" is absent */
	if (!adsp->restart)
		adsp->restart = devm_reset_control_get_exclusive(adsp->dev, "cc_lpass");

	if (IS_ERR(adsp->restart)) {
		dev_err(adsp->dev, "failed to acquire restart\n");
		return PTR_ERR(adsp->restart);
	}

	return 0;
}

static int adsp_init_mmio(struct qcom_adsp *adsp,
				struct platform_device *pdev)
{
	struct device_node *syscon;
	struct resource *res;
	int ret;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	adsp->qdsp6ss_base = devm_ioremap(&pdev->dev, res->start,
			resource_size(res));
	if (!adsp->qdsp6ss_base) {
		dev_err(adsp->dev, "failed to map QDSP6SS registers\n");
		return -ENOMEM;
	}

	syscon = of_parse_phandle(pdev->dev.of_node, "qcom,halt-regs", 0);
	if (!syscon) {
		dev_err(&pdev->dev, "failed to parse qcom,halt-regs\n");
		return -EINVAL;
	}

	adsp->halt_map = syscon_node_to_regmap(syscon);
	of_node_put(syscon);
	if (IS_ERR(adsp->halt_map))
		return PTR_ERR(adsp->halt_map);

	ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,halt-regs",
			1, &adsp->halt_lpass);
	if (ret < 0) {
		dev_err(&pdev->dev, "no offset in syscon\n");
		return ret;
	}

	return 0;
}

static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
{
	struct device_node *node;
	struct resource r;
	int ret;

	node = of_parse_phandle(adsp->dev->of_node, "memory-region", 0);
	if (!node) {
		dev_err(adsp->dev, "no memory-region specified\n");
		return -EINVAL;
	}

	ret = of_address_to_resource(node, 0, &r);
	if (ret)
		return ret;

	adsp->mem_phys = adsp->mem_reloc = r.start;
	adsp->mem_size = resource_size(&r);
	adsp->mem_region = devm_ioremap_wc(adsp->dev,
				adsp->mem_phys, adsp->mem_size);
	if (!adsp->mem_region) {
		dev_err(adsp->dev, "unable to map memory region: %pa+%zx\n",
			&r.start, adsp->mem_size);
		return -EBUSY;
	}

	return 0;
}

static int adsp_probe(struct platform_device *pdev)
{
	const struct adsp_pil_data *desc;
	struct qcom_adsp *adsp;
	struct rproc *rproc;
	int ret;

	desc = of_device_get_match_data(&pdev->dev);
	if (!desc)
		return -EINVAL;

	rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
			    desc->firmware_name, sizeof(*adsp));
	if (!rproc) {
		dev_err(&pdev->dev, "unable to allocate remoteproc\n");
		return -ENOMEM;
	}

	adsp = (struct qcom_adsp *)rproc->priv;
	adsp->dev = &pdev->dev;
	adsp->rproc = rproc;
	platform_set_drvdata(pdev, adsp);

	ret = adsp_alloc_memory_region(adsp);
	if (ret)
		goto free_rproc;

	ret = adsp_init_clock(adsp, desc->clk_ids);
	if (ret)
		goto free_rproc;

	pm_runtime_enable(adsp->dev);

	ret = adsp_init_reset(adsp);
	if (ret)
		goto disable_pm;

	ret = adsp_init_mmio(adsp, pdev);
	if (ret)
		goto disable_pm;

	ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem,
			     qcom_adsp_pil_handover);
	if (ret)
		goto disable_pm;

	qcom_add_glink_subdev(rproc, &adsp->glink_subdev);
	qcom_add_ssr_subdev(rproc, &adsp->ssr_subdev, desc->ssr_name);
	adsp->sysmon = qcom_add_sysmon_subdev(rproc,
					      desc->sysmon_name,
					      desc->ssctl_id);
	if (IS_ERR(adsp->sysmon)) {
		ret = PTR_ERR(adsp->sysmon);
		goto disable_pm;
	}

	ret = rproc_add(rproc);
	if (ret)
		goto disable_pm;

	return 0;

disable_pm:
	pm_runtime_disable(adsp->dev);
free_rproc:
	rproc_free(rproc);

	return ret;
}

static int adsp_remove(struct platform_device *pdev)
{
	struct qcom_adsp *adsp = platform_get_drvdata(pdev);

	rproc_del(adsp->rproc);

	qcom_remove_glink_subdev(adsp->rproc, &adsp->glink_subdev);
	qcom_remove_sysmon_subdev(adsp->sysmon);
	qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev);
	pm_runtime_disable(adsp->dev);
	rproc_free(adsp->rproc);

	return 0;
}

static const struct adsp_pil_data adsp_resource_init = {
	.crash_reason_smem = 423,
	.firmware_name = "adsp.mdt",
	.ssr_name = "lpass",
	.sysmon_name = "adsp",
	.ssctl_id = 0x14,
	.clk_ids = (const char*[]) {
		"sway_cbcr", "lpass_ahbs_aon_cbcr", "lpass_ahbm_aon_cbcr",
		"qdsp6ss_xo", "qdsp6ss_sleep", "qdsp6ss_core", NULL
	},
	.num_clks = 7,
};

static const struct adsp_pil_data cdsp_resource_init = {
	.crash_reason_smem = 601,
	.firmware_name = "cdsp.mdt",
	.ssr_name = "cdsp",
	.sysmon_name = "cdsp",
	.ssctl_id = 0x17,
	.clk_ids = (const char*[]) {
		"sway", "tbu", "bimc", "ahb_aon", "q6ss_slave", "q6ss_master",
		"q6_axim", NULL
	},
	.num_clks = 7,
};

static const struct of_device_id adsp_of_match[] = {
	{ .compatible = "qcom,qcs404-cdsp-pil", .data = &cdsp_resource_init },
	{ .compatible = "qcom,sdm845-adsp-pil", .data = &adsp_resource_init },
	{ },
};
MODULE_DEVICE_TABLE(of, adsp_of_match);

static struct platform_driver adsp_pil_driver = {
	.probe = adsp_probe,
	.remove = adsp_remove,
	.driver = {
		.name = "qcom_q6v5_adsp",
		.of_match_table = adsp_of_match,
	},
};

module_platform_driver(adsp_pil_driver);
MODULE_DESCRIPTION("QTI SDM845 ADSP Peripheral Image Loader");
MODULE_LICENSE("GPL v2");