1
2
3
4#include <linux/regulator/consumer.h>
5#include <linux/reset.h>
6#include <linux/clk.h>
7#include <linux/dma-mapping.h>
8#include <linux/platform_device.h>
9
10#include "lima_device.h"
11#include "lima_gp.h"
12#include "lima_pp.h"
13#include "lima_mmu.h"
14#include "lima_pmu.h"
15#include "lima_l2_cache.h"
16#include "lima_dlbu.h"
17#include "lima_bcast.h"
18#include "lima_vm.h"
19
20struct lima_ip_desc {
21 char *name;
22 char *irq_name;
23 bool must_have[lima_gpu_num];
24 int offset[lima_gpu_num];
25
26 int (*init)(struct lima_ip *ip);
27 void (*fini)(struct lima_ip *ip);
28 int (*resume)(struct lima_ip *ip);
29 void (*suspend)(struct lima_ip *ip);
30};
31
32#define LIMA_IP_DESC(ipname, mst0, mst1, off0, off1, func, irq) \
33 [lima_ip_##ipname] = { \
34 .name = #ipname, \
35 .irq_name = irq, \
36 .must_have = { \
37 [lima_gpu_mali400] = mst0, \
38 [lima_gpu_mali450] = mst1, \
39 }, \
40 .offset = { \
41 [lima_gpu_mali400] = off0, \
42 [lima_gpu_mali450] = off1, \
43 }, \
44 .init = lima_##func##_init, \
45 .fini = lima_##func##_fini, \
46 .resume = lima_##func##_resume, \
47 .suspend = lima_##func##_suspend, \
48 }
49
50static struct lima_ip_desc lima_ip_desc[lima_ip_num] = {
51 LIMA_IP_DESC(pmu, false, false, 0x02000, 0x02000, pmu, "pmu"),
52 LIMA_IP_DESC(l2_cache0, true, true, 0x01000, 0x10000, l2_cache, NULL),
53 LIMA_IP_DESC(l2_cache1, false, true, -1, 0x01000, l2_cache, NULL),
54 LIMA_IP_DESC(l2_cache2, false, false, -1, 0x11000, l2_cache, NULL),
55 LIMA_IP_DESC(gp, true, true, 0x00000, 0x00000, gp, "gp"),
56 LIMA_IP_DESC(pp0, true, true, 0x08000, 0x08000, pp, "pp0"),
57 LIMA_IP_DESC(pp1, false, false, 0x0A000, 0x0A000, pp, "pp1"),
58 LIMA_IP_DESC(pp2, false, false, 0x0C000, 0x0C000, pp, "pp2"),
59 LIMA_IP_DESC(pp3, false, false, 0x0E000, 0x0E000, pp, "pp3"),
60 LIMA_IP_DESC(pp4, false, false, -1, 0x28000, pp, "pp4"),
61 LIMA_IP_DESC(pp5, false, false, -1, 0x2A000, pp, "pp5"),
62 LIMA_IP_DESC(pp6, false, false, -1, 0x2C000, pp, "pp6"),
63 LIMA_IP_DESC(pp7, false, false, -1, 0x2E000, pp, "pp7"),
64 LIMA_IP_DESC(gpmmu, true, true, 0x03000, 0x03000, mmu, "gpmmu"),
65 LIMA_IP_DESC(ppmmu0, true, true, 0x04000, 0x04000, mmu, "ppmmu0"),
66 LIMA_IP_DESC(ppmmu1, false, false, 0x05000, 0x05000, mmu, "ppmmu1"),
67 LIMA_IP_DESC(ppmmu2, false, false, 0x06000, 0x06000, mmu, "ppmmu2"),
68 LIMA_IP_DESC(ppmmu3, false, false, 0x07000, 0x07000, mmu, "ppmmu3"),
69 LIMA_IP_DESC(ppmmu4, false, false, -1, 0x1C000, mmu, "ppmmu4"),
70 LIMA_IP_DESC(ppmmu5, false, false, -1, 0x1D000, mmu, "ppmmu5"),
71 LIMA_IP_DESC(ppmmu6, false, false, -1, 0x1E000, mmu, "ppmmu6"),
72 LIMA_IP_DESC(ppmmu7, false, false, -1, 0x1F000, mmu, "ppmmu7"),
73 LIMA_IP_DESC(dlbu, false, true, -1, 0x14000, dlbu, NULL),
74 LIMA_IP_DESC(bcast, false, true, -1, 0x13000, bcast, NULL),
75 LIMA_IP_DESC(pp_bcast, false, true, -1, 0x16000, pp_bcast, "pp"),
76 LIMA_IP_DESC(ppmmu_bcast, false, true, -1, 0x15000, mmu, NULL),
77};
78
79const char *lima_ip_name(struct lima_ip *ip)
80{
81 return lima_ip_desc[ip->id].name;
82}
83
84static int lima_clk_enable(struct lima_device *dev)
85{
86 int err;
87
88 err = clk_prepare_enable(dev->clk_bus);
89 if (err)
90 return err;
91
92 err = clk_prepare_enable(dev->clk_gpu);
93 if (err)
94 goto error_out0;
95
96 if (dev->reset) {
97 err = reset_control_deassert(dev->reset);
98 if (err) {
99 dev_err(dev->dev,
100 "reset controller deassert failed %d\n", err);
101 goto error_out1;
102 }
103 }
104
105 return 0;
106
107error_out1:
108 clk_disable_unprepare(dev->clk_gpu);
109error_out0:
110 clk_disable_unprepare(dev->clk_bus);
111 return err;
112}
113
114static void lima_clk_disable(struct lima_device *dev)
115{
116 if (dev->reset)
117 reset_control_assert(dev->reset);
118 clk_disable_unprepare(dev->clk_gpu);
119 clk_disable_unprepare(dev->clk_bus);
120}
121
122static int lima_clk_init(struct lima_device *dev)
123{
124 int err;
125
126 dev->clk_bus = devm_clk_get(dev->dev, "bus");
127 if (IS_ERR(dev->clk_bus)) {
128 err = PTR_ERR(dev->clk_bus);
129 if (err != -EPROBE_DEFER)
130 dev_err(dev->dev, "get bus clk failed %d\n", err);
131 dev->clk_bus = NULL;
132 return err;
133 }
134
135 dev->clk_gpu = devm_clk_get(dev->dev, "core");
136 if (IS_ERR(dev->clk_gpu)) {
137 err = PTR_ERR(dev->clk_gpu);
138 if (err != -EPROBE_DEFER)
139 dev_err(dev->dev, "get core clk failed %d\n", err);
140 dev->clk_gpu = NULL;
141 return err;
142 }
143
144 dev->reset = devm_reset_control_array_get_optional_shared(dev->dev);
145 if (IS_ERR(dev->reset)) {
146 err = PTR_ERR(dev->reset);
147 if (err != -EPROBE_DEFER)
148 dev_err(dev->dev, "get reset controller failed %d\n",
149 err);
150 dev->reset = NULL;
151 return err;
152 }
153
154 return lima_clk_enable(dev);
155}
156
157static void lima_clk_fini(struct lima_device *dev)
158{
159 lima_clk_disable(dev);
160}
161
162static int lima_regulator_enable(struct lima_device *dev)
163{
164 int ret;
165
166 if (!dev->regulator)
167 return 0;
168
169 ret = regulator_enable(dev->regulator);
170 if (ret < 0) {
171 dev_err(dev->dev, "failed to enable regulator: %d\n", ret);
172 return ret;
173 }
174
175 return 0;
176}
177
178static void lima_regulator_disable(struct lima_device *dev)
179{
180 if (dev->regulator)
181 regulator_disable(dev->regulator);
182}
183
184static int lima_regulator_init(struct lima_device *dev)
185{
186 int ret;
187
188 dev->regulator = devm_regulator_get_optional(dev->dev, "mali");
189 if (IS_ERR(dev->regulator)) {
190 ret = PTR_ERR(dev->regulator);
191 dev->regulator = NULL;
192 if (ret == -ENODEV)
193 return 0;
194 if (ret != -EPROBE_DEFER)
195 dev_err(dev->dev, "failed to get regulator: %d\n", ret);
196 return ret;
197 }
198
199 return lima_regulator_enable(dev);
200}
201
202static void lima_regulator_fini(struct lima_device *dev)
203{
204 lima_regulator_disable(dev);
205}
206
207static int lima_init_ip(struct lima_device *dev, int index)
208{
209 struct platform_device *pdev = to_platform_device(dev->dev);
210 struct lima_ip_desc *desc = lima_ip_desc + index;
211 struct lima_ip *ip = dev->ip + index;
212 const char *irq_name = desc->irq_name;
213 int offset = desc->offset[dev->id];
214 bool must = desc->must_have[dev->id];
215 int err;
216
217 if (offset < 0)
218 return 0;
219
220 ip->dev = dev;
221 ip->id = index;
222 ip->iomem = dev->iomem + offset;
223 if (irq_name) {
224 err = must ? platform_get_irq_byname(pdev, irq_name) :
225 platform_get_irq_byname_optional(pdev, irq_name);
226 if (err < 0)
227 goto out;
228 ip->irq = err;
229 }
230
231 err = desc->init(ip);
232 if (!err) {
233 ip->present = true;
234 return 0;
235 }
236
237out:
238 return must ? err : 0;
239}
240
241static void lima_fini_ip(struct lima_device *ldev, int index)
242{
243 struct lima_ip_desc *desc = lima_ip_desc + index;
244 struct lima_ip *ip = ldev->ip + index;
245
246 if (ip->present)
247 desc->fini(ip);
248}
249
250static int lima_resume_ip(struct lima_device *ldev, int index)
251{
252 struct lima_ip_desc *desc = lima_ip_desc + index;
253 struct lima_ip *ip = ldev->ip + index;
254 int ret = 0;
255
256 if (ip->present)
257 ret = desc->resume(ip);
258
259 return ret;
260}
261
262static void lima_suspend_ip(struct lima_device *ldev, int index)
263{
264 struct lima_ip_desc *desc = lima_ip_desc + index;
265 struct lima_ip *ip = ldev->ip + index;
266
267 if (ip->present)
268 desc->suspend(ip);
269}
270
271static int lima_init_gp_pipe(struct lima_device *dev)
272{
273 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp;
274 int err;
275
276 pipe->ldev = dev;
277
278 err = lima_sched_pipe_init(pipe, "gp");
279 if (err)
280 return err;
281
282 pipe->l2_cache[pipe->num_l2_cache++] = dev->ip + lima_ip_l2_cache0;
283 pipe->mmu[pipe->num_mmu++] = dev->ip + lima_ip_gpmmu;
284 pipe->processor[pipe->num_processor++] = dev->ip + lima_ip_gp;
285
286 err = lima_gp_pipe_init(dev);
287 if (err) {
288 lima_sched_pipe_fini(pipe);
289 return err;
290 }
291
292 return 0;
293}
294
295static void lima_fini_gp_pipe(struct lima_device *dev)
296{
297 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp;
298
299 lima_gp_pipe_fini(dev);
300 lima_sched_pipe_fini(pipe);
301}
302
303static int lima_init_pp_pipe(struct lima_device *dev)
304{
305 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp;
306 int err, i;
307
308 pipe->ldev = dev;
309
310 err = lima_sched_pipe_init(pipe, "pp");
311 if (err)
312 return err;
313
314 for (i = 0; i < LIMA_SCHED_PIPE_MAX_PROCESSOR; i++) {
315 struct lima_ip *pp = dev->ip + lima_ip_pp0 + i;
316 struct lima_ip *ppmmu = dev->ip + lima_ip_ppmmu0 + i;
317 struct lima_ip *l2_cache;
318
319 if (dev->id == lima_gpu_mali400)
320 l2_cache = dev->ip + lima_ip_l2_cache0;
321 else
322 l2_cache = dev->ip + lima_ip_l2_cache1 + (i >> 2);
323
324 if (pp->present && ppmmu->present && l2_cache->present) {
325 pipe->mmu[pipe->num_mmu++] = ppmmu;
326 pipe->processor[pipe->num_processor++] = pp;
327 if (!pipe->l2_cache[i >> 2])
328 pipe->l2_cache[pipe->num_l2_cache++] = l2_cache;
329 }
330 }
331
332 if (dev->ip[lima_ip_bcast].present) {
333 pipe->bcast_processor = dev->ip + lima_ip_pp_bcast;
334 pipe->bcast_mmu = dev->ip + lima_ip_ppmmu_bcast;
335 }
336
337 err = lima_pp_pipe_init(dev);
338 if (err) {
339 lima_sched_pipe_fini(pipe);
340 return err;
341 }
342
343 return 0;
344}
345
346static void lima_fini_pp_pipe(struct lima_device *dev)
347{
348 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp;
349
350 lima_pp_pipe_fini(dev);
351 lima_sched_pipe_fini(pipe);
352}
353
354int lima_device_init(struct lima_device *ldev)
355{
356 struct platform_device *pdev = to_platform_device(ldev->dev);
357 int err, i;
358
359 dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32));
360
361 err = lima_clk_init(ldev);
362 if (err)
363 return err;
364
365 err = lima_regulator_init(ldev);
366 if (err)
367 goto err_out0;
368
369 ldev->empty_vm = lima_vm_create(ldev);
370 if (!ldev->empty_vm) {
371 err = -ENOMEM;
372 goto err_out1;
373 }
374
375 ldev->va_start = 0;
376 if (ldev->id == lima_gpu_mali450) {
377 ldev->va_end = LIMA_VA_RESERVE_START;
378 ldev->dlbu_cpu = dma_alloc_wc(
379 ldev->dev, LIMA_PAGE_SIZE,
380 &ldev->dlbu_dma, GFP_KERNEL | __GFP_NOWARN);
381 if (!ldev->dlbu_cpu) {
382 err = -ENOMEM;
383 goto err_out2;
384 }
385 } else
386 ldev->va_end = LIMA_VA_RESERVE_END;
387
388 ldev->iomem = devm_platform_ioremap_resource(pdev, 0);
389 if (IS_ERR(ldev->iomem)) {
390 dev_err(ldev->dev, "fail to ioremap iomem\n");
391 err = PTR_ERR(ldev->iomem);
392 goto err_out3;
393 }
394
395 for (i = 0; i < lima_ip_num; i++) {
396 err = lima_init_ip(ldev, i);
397 if (err)
398 goto err_out4;
399 }
400
401 err = lima_init_gp_pipe(ldev);
402 if (err)
403 goto err_out4;
404
405 err = lima_init_pp_pipe(ldev);
406 if (err)
407 goto err_out5;
408
409 ldev->dump.magic = LIMA_DUMP_MAGIC;
410 ldev->dump.version_major = LIMA_DUMP_MAJOR;
411 ldev->dump.version_minor = LIMA_DUMP_MINOR;
412 INIT_LIST_HEAD(&ldev->error_task_list);
413 mutex_init(&ldev->error_task_list_lock);
414
415 dev_info(ldev->dev, "bus rate = %lu\n", clk_get_rate(ldev->clk_bus));
416 dev_info(ldev->dev, "mod rate = %lu", clk_get_rate(ldev->clk_gpu));
417
418 return 0;
419
420err_out5:
421 lima_fini_gp_pipe(ldev);
422err_out4:
423 while (--i >= 0)
424 lima_fini_ip(ldev, i);
425err_out3:
426 if (ldev->dlbu_cpu)
427 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE,
428 ldev->dlbu_cpu, ldev->dlbu_dma);
429err_out2:
430 lima_vm_put(ldev->empty_vm);
431err_out1:
432 lima_regulator_fini(ldev);
433err_out0:
434 lima_clk_fini(ldev);
435 return err;
436}
437
438void lima_device_fini(struct lima_device *ldev)
439{
440 int i;
441 struct lima_sched_error_task *et, *tmp;
442
443 list_for_each_entry_safe(et, tmp, &ldev->error_task_list, list) {
444 list_del(&et->list);
445 kvfree(et);
446 }
447 mutex_destroy(&ldev->error_task_list_lock);
448
449 lima_fini_pp_pipe(ldev);
450 lima_fini_gp_pipe(ldev);
451
452 for (i = lima_ip_num - 1; i >= 0; i--)
453 lima_fini_ip(ldev, i);
454
455 if (ldev->dlbu_cpu)
456 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE,
457 ldev->dlbu_cpu, ldev->dlbu_dma);
458
459 lima_vm_put(ldev->empty_vm);
460
461 lima_regulator_fini(ldev);
462
463 lima_clk_fini(ldev);
464}
465
466int lima_device_resume(struct device *dev)
467{
468 struct lima_device *ldev = dev_get_drvdata(dev);
469 int i, err;
470
471 err = lima_clk_enable(ldev);
472 if (err) {
473 dev_err(dev, "resume clk fail %d\n", err);
474 return err;
475 }
476
477 err = lima_regulator_enable(ldev);
478 if (err) {
479 dev_err(dev, "resume regulator fail %d\n", err);
480 goto err_out0;
481 }
482
483 for (i = 0; i < lima_ip_num; i++) {
484 err = lima_resume_ip(ldev, i);
485 if (err) {
486 dev_err(dev, "resume ip %d fail\n", i);
487 goto err_out1;
488 }
489 }
490
491 err = lima_devfreq_resume(&ldev->devfreq);
492 if (err) {
493 dev_err(dev, "devfreq resume fail\n");
494 goto err_out1;
495 }
496
497 return 0;
498
499err_out1:
500 while (--i >= 0)
501 lima_suspend_ip(ldev, i);
502 lima_regulator_disable(ldev);
503err_out0:
504 lima_clk_disable(ldev);
505 return err;
506}
507
508int lima_device_suspend(struct device *dev)
509{
510 struct lima_device *ldev = dev_get_drvdata(dev);
511 int i, err;
512
513
514 for (i = 0; i < lima_pipe_num; i++) {
515 if (atomic_read(&ldev->pipe[i].base.hw_rq_count))
516 return -EBUSY;
517 }
518
519 err = lima_devfreq_suspend(&ldev->devfreq);
520 if (err) {
521 dev_err(dev, "devfreq suspend fail\n");
522 return err;
523 }
524
525 for (i = lima_ip_num - 1; i >= 0; i--)
526 lima_suspend_ip(ldev, i);
527
528 lima_regulator_disable(ldev);
529
530 lima_clk_disable(ldev);
531
532 return 0;
533}
534
