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[cor.git] / drivers / remoteproc / qcom_q6v5_adsp.c
blobe953886b2eb7780b695f47045cf267deaeb2d090
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Qualcomm Technology Inc. ADSP Peripheral Image Loader for SDM845.
4 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
5 */
6
7 #include <linux/clk.h>
8 #include <linux/delay.h>
9 #include <linux/firmware.h>
10 #include <linux/interrupt.h>
11 #include <linux/io.h>
12 #include <linux/iopoll.h>
13 #include <linux/kernel.h>
14 #include <linux/mfd/syscon.h>
15 #include <linux/module.h>
16 #include <linux/of_address.h>
17 #include <linux/of_device.h>
18 #include <linux/platform_device.h>
19 #include <linux/pm_domain.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/regmap.h>
22 #include <linux/remoteproc.h>
23 #include <linux/reset.h>
24 #include <linux/soc/qcom/mdt_loader.h>
25 #include <linux/soc/qcom/smem.h>
26 #include <linux/soc/qcom/smem_state.h>
27
28 #include "qcom_common.h"
29 #include "qcom_q6v5.h"
30 #include "remoteproc_internal.h"
31
32 /* time out value */
33 #define ACK_TIMEOUT 1000
34 #define BOOT_FSM_TIMEOUT 10000
35 /* mask values */
36 #define EVB_MASK GENMASK(27, 4)
37 /*QDSP6SS register offsets*/
38 #define RST_EVB_REG 0x10
39 #define CORE_START_REG 0x400
40 #define BOOT_CMD_REG 0x404
41 #define BOOT_STATUS_REG 0x408
42 #define RET_CFG_REG 0x1C
43 /*TCSR register offsets*/
44 #define LPASS_MASTER_IDLE_REG 0x8
45 #define LPASS_HALTACK_REG 0x4
46 #define LPASS_PWR_ON_REG 0x10
47 #define LPASS_HALTREQ_REG 0x0
48
49 #define QDSP6SS_XO_CBCR 0x38
50 #define QDSP6SS_CORE_CBCR 0x20
51 #define QDSP6SS_SLEEP_CBCR 0x3c
52
53 struct adsp_pil_data {
54 int crash_reason_smem;
55 const char *firmware_name;
56
57 const char *ssr_name;
58 const char *sysmon_name;
59 int ssctl_id;
60
61 const char **clk_ids;
62 int num_clks;
63 };
64
65 struct qcom_adsp {
66 struct device *dev;
67 struct rproc *rproc;
68
69 struct qcom_q6v5 q6v5;
70
71 struct clk *xo;
72
73 int num_clks;
74 struct clk_bulk_data *clks;
75
76 void __iomem *qdsp6ss_base;
77
78 struct reset_control *pdc_sync_reset;
79 struct reset_control *restart;
80
81 struct regmap *halt_map;
82 unsigned int halt_lpass;
83
84 int crash_reason_smem;
85
86 struct completion start_done;
87 struct completion stop_done;
88
89 phys_addr_t mem_phys;
90 phys_addr_t mem_reloc;
91 void *mem_region;
92 size_t mem_size;
93
94 struct qcom_rproc_glink glink_subdev;
95 struct qcom_rproc_ssr ssr_subdev;
96 struct qcom_sysmon *sysmon;
97 };
98
99 static int qcom_adsp_shutdown(struct qcom_adsp *adsp)
100 {
101 unsigned long timeout;
102 unsigned int val;
103 int ret;
104
105 /* Reset the retention logic */
106 val = readl(adsp->qdsp6ss_base + RET_CFG_REG);
107 val |= 0x1;
108 writel(val, adsp->qdsp6ss_base + RET_CFG_REG);
109
110 clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);
111
112 /* QDSP6 master port needs to be explicitly halted */
113 ret = regmap_read(adsp->halt_map,
114 adsp->halt_lpass + LPASS_PWR_ON_REG, &val);
115 if (ret || !val)
116 goto reset;
117
118 ret = regmap_read(adsp->halt_map,
119 adsp->halt_lpass + LPASS_MASTER_IDLE_REG,
120 &val);
121 if (ret || val)
122 goto reset;
123
124 regmap_write(adsp->halt_map,
125 adsp->halt_lpass + LPASS_HALTREQ_REG, 1);
126
127 /* Wait for halt ACK from QDSP6 */
128 timeout = jiffies + msecs_to_jiffies(ACK_TIMEOUT);
129 for (;;) {
130 ret = regmap_read(adsp->halt_map,
131 adsp->halt_lpass + LPASS_HALTACK_REG, &val);
132 if (ret || val || time_after(jiffies, timeout))
133 break;
134
135 usleep_range(1000, 1100);
136 }
137
138 ret = regmap_read(adsp->halt_map,
139 adsp->halt_lpass + LPASS_MASTER_IDLE_REG, &val);
140 if (ret || !val)
141 dev_err(adsp->dev, "port failed halt\n");
142
143 reset:
144 /* Assert the LPASS PDC Reset */
145 reset_control_assert(adsp->pdc_sync_reset);
146 /* Place the LPASS processor into reset */
147 reset_control_assert(adsp->restart);
148 /* wait after asserting subsystem restart from AOSS */
149 usleep_range(200, 300);
150
151 /* Clear the halt request for the AXIM and AHBM for Q6 */
152 regmap_write(adsp->halt_map, adsp->halt_lpass + LPASS_HALTREQ_REG, 0);
153
154 /* De-assert the LPASS PDC Reset */
155 reset_control_deassert(adsp->pdc_sync_reset);
156 /* Remove the LPASS reset */
157 reset_control_deassert(adsp->restart);
158 /* wait after de-asserting subsystem restart from AOSS */
159 usleep_range(200, 300);
160
161 return 0;
162 }
163
164 static int adsp_load(struct rproc *rproc, const struct firmware *fw)
165 {
166 struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
167
168 return qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
169 adsp->mem_region, adsp->mem_phys, adsp->mem_size,
170 &adsp->mem_reloc);
171 }
172
173 static int adsp_start(struct rproc *rproc)
174 {
175 struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
176 int ret;
177 unsigned int val;
178
179 qcom_q6v5_prepare(&adsp->q6v5);
180
181 ret = clk_prepare_enable(adsp->xo);
182 if (ret)
183 goto disable_irqs;
184
185 dev_pm_genpd_set_performance_state(adsp->dev, INT_MAX);
186 ret = pm_runtime_get_sync(adsp->dev);
187 if (ret)
188 goto disable_xo_clk;
189
190 ret = clk_bulk_prepare_enable(adsp->num_clks, adsp->clks);
191 if (ret) {
192 dev_err(adsp->dev, "adsp clk_enable failed\n");
193 goto disable_power_domain;
194 }
195
196 /* Enable the XO clock */
197 writel(1, adsp->qdsp6ss_base + QDSP6SS_XO_CBCR);
198
199 /* Enable the QDSP6SS sleep clock */
200 writel(1, adsp->qdsp6ss_base + QDSP6SS_SLEEP_CBCR);
201
202 /* Enable the QDSP6 core clock */
203 writel(1, adsp->qdsp6ss_base + QDSP6SS_CORE_CBCR);
204
205 /* Program boot address */
206 writel(adsp->mem_phys >> 4, adsp->qdsp6ss_base + RST_EVB_REG);
207
208 /* De-assert QDSP6 stop core. QDSP6 will execute after out of reset */
209 writel(0x1, adsp->qdsp6ss_base + CORE_START_REG);
210
211 /* Trigger boot FSM to start QDSP6 */
212 writel(0x1, adsp->qdsp6ss_base + BOOT_CMD_REG);
213
214 /* Wait for core to come out of reset */
215 ret = readl_poll_timeout(adsp->qdsp6ss_base + BOOT_STATUS_REG,
216 val, (val & BIT(0)) != 0, 10, BOOT_FSM_TIMEOUT);
217 if (ret) {
218 dev_err(adsp->dev, "failed to bootup adsp\n");
219 goto disable_adsp_clks;
220 }
221
222 ret = qcom_q6v5_wait_for_start(&adsp->q6v5, msecs_to_jiffies(5 * HZ));
223 if (ret == -ETIMEDOUT) {
224 dev_err(adsp->dev, "start timed out\n");
225 goto disable_adsp_clks;
226 }
227
228 return 0;
229
230 disable_adsp_clks:
231 clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);
232 disable_power_domain:
233 dev_pm_genpd_set_performance_state(adsp->dev, 0);
234 pm_runtime_put(adsp->dev);
235 disable_xo_clk:
236 clk_disable_unprepare(adsp->xo);
237 disable_irqs:
238 qcom_q6v5_unprepare(&adsp->q6v5);
239
240 return ret;
241 }
242
243 static void qcom_adsp_pil_handover(struct qcom_q6v5 *q6v5)
244 {
245 struct qcom_adsp *adsp = container_of(q6v5, struct qcom_adsp, q6v5);
246
247 clk_disable_unprepare(adsp->xo);
248 dev_pm_genpd_set_performance_state(adsp->dev, 0);
249 pm_runtime_put(adsp->dev);
250 }
251
252 static int adsp_stop(struct rproc *rproc)
253 {
254 struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
255 int handover;
256 int ret;
257
258 ret = qcom_q6v5_request_stop(&adsp->q6v5);
259 if (ret == -ETIMEDOUT)
260 dev_err(adsp->dev, "timed out on wait\n");
261
262 ret = qcom_adsp_shutdown(adsp);
263 if (ret)
264 dev_err(adsp->dev, "failed to shutdown: %d\n", ret);
265
266 handover = qcom_q6v5_unprepare(&adsp->q6v5);
267 if (handover)
268 qcom_adsp_pil_handover(&adsp->q6v5);
269
270 return ret;
271 }
272
273 static void *adsp_da_to_va(struct rproc *rproc, u64 da, int len)
274 {
275 struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
276 int offset;
277
278 offset = da - adsp->mem_reloc;
279 if (offset < 0 || offset + len > adsp->mem_size)
280 return NULL;
281
282 return adsp->mem_region + offset;
283 }
284
285 static const struct rproc_ops adsp_ops = {
286 .start = adsp_start,
287 .stop = adsp_stop,
288 .da_to_va = adsp_da_to_va,
289 .parse_fw = qcom_register_dump_segments,
290 .load = adsp_load,
291 };
292
293 static int adsp_init_clock(struct qcom_adsp *adsp, const char **clk_ids)
294 {
295 int num_clks = 0;
296 int i, ret;
297
298 adsp->xo = devm_clk_get(adsp->dev, "xo");
299 if (IS_ERR(adsp->xo)) {
300 ret = PTR_ERR(adsp->xo);
301 if (ret != -EPROBE_DEFER)
302 dev_err(adsp->dev, "failed to get xo clock");
303 return ret;
304 }
305
306 for (i = 0; clk_ids[i]; i++)
307 num_clks++;
308
309 adsp->num_clks = num_clks;
310 adsp->clks = devm_kcalloc(adsp->dev, adsp->num_clks,
311 sizeof(*adsp->clks), GFP_KERNEL);
312 if (!adsp->clks)
313 return -ENOMEM;
314
315 for (i = 0; i < adsp->num_clks; i++)
316 adsp->clks[i].id = clk_ids[i];
317
318 return devm_clk_bulk_get(adsp->dev, adsp->num_clks, adsp->clks);
319 }
320
321 static int adsp_init_reset(struct qcom_adsp *adsp)
322 {
323 adsp->pdc_sync_reset = devm_reset_control_get_optional_exclusive(adsp->dev,
324 "pdc_sync");
325 if (IS_ERR(adsp->pdc_sync_reset)) {
326 dev_err(adsp->dev, "failed to acquire pdc_sync reset\n");
327 return PTR_ERR(adsp->pdc_sync_reset);
328 }
329
330 adsp->restart = devm_reset_control_get_optional_exclusive(adsp->dev, "restart");
331
332 /* Fall back to the old "cc_lpass" if "restart" is absent */
333 if (!adsp->restart)
334 adsp->restart = devm_reset_control_get_exclusive(adsp->dev, "cc_lpass");
335
336 if (IS_ERR(adsp->restart)) {
337 dev_err(adsp->dev, "failed to acquire restart\n");
338 return PTR_ERR(adsp->restart);
339 }
340
341 return 0;
342 }
343
344 static int adsp_init_mmio(struct qcom_adsp *adsp,
345 struct platform_device *pdev)
346 {
347 struct device_node *syscon;
348 struct resource *res;
349 int ret;
350
351 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
352 adsp->qdsp6ss_base = devm_ioremap(&pdev->dev, res->start,
353 resource_size(res));
354 if (!adsp->qdsp6ss_base) {
355 dev_err(adsp->dev, "failed to map QDSP6SS registers\n");
356 return -ENOMEM;
357 }
358
359 syscon = of_parse_phandle(pdev->dev.of_node, "qcom,halt-regs", 0);
360 if (!syscon) {
361 dev_err(&pdev->dev, "failed to parse qcom,halt-regs\n");
362 return -EINVAL;
363 }
364
365 adsp->halt_map = syscon_node_to_regmap(syscon);
366 of_node_put(syscon);
367 if (IS_ERR(adsp->halt_map))
368 return PTR_ERR(adsp->halt_map);
369
370 ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,halt-regs",
371 1, &adsp->halt_lpass);
372 if (ret < 0) {
373 dev_err(&pdev->dev, "no offset in syscon\n");
374 return ret;
375 }
376
377 return 0;
378 }
379
380 static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
381 {
382 struct device_node *node;
383 struct resource r;
384 int ret;
385
386 node = of_parse_phandle(adsp->dev->of_node, "memory-region", 0);
387 if (!node) {
388 dev_err(adsp->dev, "no memory-region specified\n");
389 return -EINVAL;
390 }
391
392 ret = of_address_to_resource(node, 0, &r);
393 if (ret)
394 return ret;
395
396 adsp->mem_phys = adsp->mem_reloc = r.start;
397 adsp->mem_size = resource_size(&r);
398 adsp->mem_region = devm_ioremap_wc(adsp->dev,
399 adsp->mem_phys, adsp->mem_size);
400 if (!adsp->mem_region) {
401 dev_err(adsp->dev, "unable to map memory region: %pa+%zx\n",
402 &r.start, adsp->mem_size);
403 return -EBUSY;
404 }
405
406 return 0;
407 }
408
409 static int adsp_probe(struct platform_device *pdev)
410 {
411 const struct adsp_pil_data *desc;
412 struct qcom_adsp *adsp;
413 struct rproc *rproc;
414 int ret;
415
416 desc = of_device_get_match_data(&pdev->dev);
417 if (!desc)
418 return -EINVAL;
419
420 rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
421 desc->firmware_name, sizeof(*adsp));
422 if (!rproc) {
423 dev_err(&pdev->dev, "unable to allocate remoteproc\n");
424 return -ENOMEM;
425 }
426
427 adsp = (struct qcom_adsp *)rproc->priv;
428 adsp->dev = &pdev->dev;
429 adsp->rproc = rproc;
430 platform_set_drvdata(pdev, adsp);
431
432 ret = adsp_alloc_memory_region(adsp);
433 if (ret)
434 goto free_rproc;
435
436 ret = adsp_init_clock(adsp, desc->clk_ids);
437 if (ret)
438 goto free_rproc;
439
440 pm_runtime_enable(adsp->dev);
441
442 ret = adsp_init_reset(adsp);
443 if (ret)
444 goto disable_pm;
445
446 ret = adsp_init_mmio(adsp, pdev);
447 if (ret)
448 goto disable_pm;
449
450 ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem,
451 qcom_adsp_pil_handover);
452 if (ret)
453 goto disable_pm;
454
455 qcom_add_glink_subdev(rproc, &adsp->glink_subdev);
456 qcom_add_ssr_subdev(rproc, &adsp->ssr_subdev, desc->ssr_name);
457 adsp->sysmon = qcom_add_sysmon_subdev(rproc,
458 desc->sysmon_name,
459 desc->ssctl_id);
460 if (IS_ERR(adsp->sysmon)) {
461 ret = PTR_ERR(adsp->sysmon);
462 goto disable_pm;
463 }
464
465 ret = rproc_add(rproc);
466 if (ret)
467 goto disable_pm;
468
469 return 0;
470
471 disable_pm:
472 pm_runtime_disable(adsp->dev);
473 free_rproc:
474 rproc_free(rproc);
475
476 return ret;
477 }
478
479 static int adsp_remove(struct platform_device *pdev)
480 {
481 struct qcom_adsp *adsp = platform_get_drvdata(pdev);
482
483 rproc_del(adsp->rproc);
484
485 qcom_remove_glink_subdev(adsp->rproc, &adsp->glink_subdev);
486 qcom_remove_sysmon_subdev(adsp->sysmon);
487 qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev);
488 pm_runtime_disable(adsp->dev);
489 rproc_free(adsp->rproc);
490
491 return 0;
492 }
493
494 static const struct adsp_pil_data adsp_resource_init = {
495 .crash_reason_smem = 423,
496 .firmware_name = "adsp.mdt",
497 .ssr_name = "lpass",
498 .sysmon_name = "adsp",
499 .ssctl_id = 0x14,
500 .clk_ids = (const char*[]) {
501 "sway_cbcr", "lpass_ahbs_aon_cbcr", "lpass_ahbm_aon_cbcr",
502 "qdsp6ss_xo", "qdsp6ss_sleep", "qdsp6ss_core", NULL
503 },
504 .num_clks = 7,
505 };
506
507 static const struct adsp_pil_data cdsp_resource_init = {
508 .crash_reason_smem = 601,
509 .firmware_name = "cdsp.mdt",
510 .ssr_name = "cdsp",
511 .sysmon_name = "cdsp",
512 .ssctl_id = 0x17,
513 .clk_ids = (const char*[]) {
514 "sway", "tbu", "bimc", "ahb_aon", "q6ss_slave", "q6ss_master",
515 "q6_axim", NULL
516 },
517 .num_clks = 7,
518 };
519
520 static const struct of_device_id adsp_of_match[] = {
521 { .compatible = "qcom,qcs404-cdsp-pil", .data = &cdsp_resource_init },
522 { .compatible = "qcom,sdm845-adsp-pil", .data = &adsp_resource_init },
523 { },
524 };
525 MODULE_DEVICE_TABLE(of, adsp_of_match);
526
527 static struct platform_driver adsp_pil_driver = {
528 .probe = adsp_probe,
529 .remove = adsp_remove,
530 .driver = {
531 .name = "qcom_q6v5_adsp",
532 .of_match_table = adsp_of_match,
533 },
534 };
535
536 module_platform_driver(adsp_pil_driver);
537 MODULE_DESCRIPTION("QTI SDM845 ADSP Peripheral Image Loader");
538 MODULE_LICENSE("GPL v2");
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