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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
3/* Copyright 2019 Linaro, Ltd., Rob Herring <robh@kernel.org> */
4/* Copyright 2019 Collabora ltd. */
5
6#include <linux/module.h>
7#include <linux/of_platform.h>
8#include <linux/pagemap.h>
9#include <linux/pm_runtime.h>
10#include <drm/panfrost_drm.h>
11#include <drm/drm_drv.h>
12#include <drm/drm_ioctl.h>
13#include <drm/drm_syncobj.h>
14#include <drm/drm_utils.h>
15
16#include "panfrost_device.h"
17#include "panfrost_devfreq.h"
18#include "panfrost_gem.h"
19#include "panfrost_mmu.h"
20#include "panfrost_job.h"
21#include "panfrost_gpu.h"
22#include "panfrost_perfcnt.h"
23
24static bool unstable_ioctls;
25module_param_unsafe(unstable_ioctls, bool, 0600);
26
27static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct drm_file *file)
28{
29 struct drm_panfrost_get_param *param = data;
30 struct panfrost_device *pfdev = ddev->dev_private;
31
32 if (param->pad != 0)
33 return -EINVAL;
34
35#define PANFROST_FEATURE(name, member) \
36 case DRM_PANFROST_PARAM_ ## name: \
37 param->value = pfdev->features.member; \
38 break
39#define PANFROST_FEATURE_ARRAY(name, member, max) \
40 case DRM_PANFROST_PARAM_ ## name ## 0 ... \
41 DRM_PANFROST_PARAM_ ## name ## max: \
42 param->value = pfdev->features.member[param->param - \
43 DRM_PANFROST_PARAM_ ## name ## 0]; \
44 break
45
46 switch (param->param) {
47 PANFROST_FEATURE(GPU_PROD_ID, id);
48 PANFROST_FEATURE(GPU_REVISION, revision);
49 PANFROST_FEATURE(SHADER_PRESENT, shader_present);
50 PANFROST_FEATURE(TILER_PRESENT, tiler_present);
51 PANFROST_FEATURE(L2_PRESENT, l2_present);
52 PANFROST_FEATURE(STACK_PRESENT, stack_present);
53 PANFROST_FEATURE(AS_PRESENT, as_present);
54 PANFROST_FEATURE(JS_PRESENT, js_present);
55 PANFROST_FEATURE(L2_FEATURES, l2_features);
56 PANFROST_FEATURE(CORE_FEATURES, core_features);
57 PANFROST_FEATURE(TILER_FEATURES, tiler_features);
58 PANFROST_FEATURE(MEM_FEATURES, mem_features);
59 PANFROST_FEATURE(MMU_FEATURES, mmu_features);
60 PANFROST_FEATURE(THREAD_FEATURES, thread_features);
61 PANFROST_FEATURE(MAX_THREADS, max_threads);
62 PANFROST_FEATURE(THREAD_MAX_WORKGROUP_SZ,
63 thread_max_workgroup_sz);
64 PANFROST_FEATURE(THREAD_MAX_BARRIER_SZ,
65 thread_max_barrier_sz);
66 PANFROST_FEATURE(COHERENCY_FEATURES, coherency_features);
67 PANFROST_FEATURE_ARRAY(TEXTURE_FEATURES, texture_features, 3);
68 PANFROST_FEATURE_ARRAY(JS_FEATURES, js_features, 15);
69 PANFROST_FEATURE(NR_CORE_GROUPS, nr_core_groups);
70 PANFROST_FEATURE(THREAD_TLS_ALLOC, thread_tls_alloc);
71 default:
72 return -EINVAL;
73 }
74
75 return 0;
76}
77
78static int panfrost_ioctl_create_bo(struct drm_device *dev, void *data,
79 struct drm_file *file)
80{
81 struct panfrost_gem_object *bo;
82 struct drm_panfrost_create_bo *args = data;
83
84 if (!args->size || args->pad ||
85 (args->flags & ~(PANFROST_BO_NOEXEC | PANFROST_BO_HEAP)))
86 return -EINVAL;
87
88 /* Heaps should never be executable */
89 if ((args->flags & PANFROST_BO_HEAP) &&
90 !(args->flags & PANFROST_BO_NOEXEC))
91 return -EINVAL;
92
93 bo = panfrost_gem_create_with_handle(file, dev, args->size, args->flags,
94 &args->handle);
95 if (IS_ERR(bo))
96 return PTR_ERR(bo);
97
98 args->offset = bo->node.start << PAGE_SHIFT;
99
100 return 0;
101}
102
103/**
104 * panfrost_lookup_bos() - Sets up job->bo[] with the GEM objects
105 * referenced by the job.
106 * @dev: DRM device
107 * @file_priv: DRM file for this fd
108 * @args: IOCTL args
109 * @job: job being set up
110 *
111 * Resolve handles from userspace to BOs and attach them to job.
112 *
113 * Note that this function doesn't need to unreference the BOs on
114 * failure, because that will happen at panfrost_job_cleanup() time.
115 */
116static int
117panfrost_lookup_bos(struct drm_device *dev,
118 struct drm_file *file_priv,
119 struct drm_panfrost_submit *args,
120 struct panfrost_job *job)
121{
122 job->bo_count = args->bo_handle_count;
123
124 if (!job->bo_count)
125 return 0;
126
127 job->implicit_fences = kvmalloc_array(job->bo_count,
128 sizeof(struct dma_fence *),
129 GFP_KERNEL | __GFP_ZERO);
130 if (!job->implicit_fences)
131 return -ENOMEM;
132
133 return drm_gem_objects_lookup(file_priv,
134 (void __user *)(uintptr_t)args->bo_handles,
135 job->bo_count, &job->bos);
136}
137
138/**
139 * panfrost_copy_in_sync() - Sets up job->in_fences[] with the sync objects
140 * referenced by the job.
141 * @dev: DRM device
142 * @file_priv: DRM file for this fd
143 * @args: IOCTL args
144 * @job: job being set up
145 *
146 * Resolve syncobjs from userspace to fences and attach them to job.
147 *
148 * Note that this function doesn't need to unreference the fences on
149 * failure, because that will happen at panfrost_job_cleanup() time.
150 */
151static int
152panfrost_copy_in_sync(struct drm_device *dev,
153 struct drm_file *file_priv,
154 struct drm_panfrost_submit *args,
155 struct panfrost_job *job)
156{
157 u32 *handles;
158 int ret = 0;
159 int i;
160
161 job->in_fence_count = args->in_sync_count;
162
163 if (!job->in_fence_count)
164 return 0;
165
166 job->in_fences = kvmalloc_array(job->in_fence_count,
167 sizeof(struct dma_fence *),
168 GFP_KERNEL | __GFP_ZERO);
169 if (!job->in_fences) {
170 DRM_DEBUG("Failed to allocate job in fences\n");
171 return -ENOMEM;
172 }
173
174 handles = kvmalloc_array(job->in_fence_count, sizeof(u32), GFP_KERNEL);
175 if (!handles) {
176 ret = -ENOMEM;
177 DRM_DEBUG("Failed to allocate incoming syncobj handles\n");
178 goto fail;
179 }
180
181 if (copy_from_user(handles,
182 (void __user *)(uintptr_t)args->in_syncs,
183 job->in_fence_count * sizeof(u32))) {
184 ret = -EFAULT;
185 DRM_DEBUG("Failed to copy in syncobj handles\n");
186 goto fail;
187 }
188
189 for (i = 0; i < job->in_fence_count; i++) {
190 ret = drm_syncobj_find_fence(file_priv, handles[i], 0, 0,
191 &job->in_fences[i]);
192 if (ret == -EINVAL)
193 goto fail;
194 }
195
196fail:
197 kvfree(handles);
198 return ret;
199}
200
201static int panfrost_ioctl_submit(struct drm_device *dev, void *data,
202 struct drm_file *file)
203{
204 struct panfrost_device *pfdev = dev->dev_private;
205 struct drm_panfrost_submit *args = data;
206 struct drm_syncobj *sync_out = NULL;
207 struct panfrost_job *job;
208 int ret = 0;
209
210 if (!args->jc)
211 return -EINVAL;
212
213 if (args->requirements && args->requirements != PANFROST_JD_REQ_FS)
214 return -EINVAL;
215
216 if (args->out_sync > 0) {
217 sync_out = drm_syncobj_find(file, args->out_sync);
218 if (!sync_out)
219 return -ENODEV;
220 }
221
222 job = kzalloc(sizeof(*job), GFP_KERNEL);
223 if (!job) {
224 ret = -ENOMEM;
225 goto fail_out_sync;
226 }
227
228 kref_init(&job->refcount);
229
230 job->pfdev = pfdev;
231 job->jc = args->jc;
232 job->requirements = args->requirements;
233 job->flush_id = panfrost_gpu_get_latest_flush_id(pfdev);
234 job->file_priv = file->driver_priv;
235
236 ret = panfrost_copy_in_sync(dev, file, args, job);
237 if (ret)
238 goto fail_job;
239
240 ret = panfrost_lookup_bos(dev, file, args, job);
241 if (ret)
242 goto fail_job;
243
244 ret = panfrost_job_push(job);
245 if (ret)
246 goto fail_job;
247
248 /* Update the return sync object for the job */
249 if (sync_out)
250 drm_syncobj_replace_fence(sync_out, job->render_done_fence);
251
252fail_job:
253 panfrost_job_put(job);
254fail_out_sync:
255 if (sync_out)
256 drm_syncobj_put(sync_out);
257
258 return ret;
259}
260
261static int
262panfrost_ioctl_wait_bo(struct drm_device *dev, void *data,
263 struct drm_file *file_priv)
264{
265 long ret;
266 struct drm_panfrost_wait_bo *args = data;
267 struct drm_gem_object *gem_obj;
268 unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns);
269
270 if (args->pad)
271 return -EINVAL;
272
273 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
274 if (!gem_obj)
275 return -ENOENT;
276
277 ret = dma_resv_wait_timeout_rcu(gem_obj->resv, true,
278 true, timeout);
279 if (!ret)
280 ret = timeout ? -ETIMEDOUT : -EBUSY;
281
282 drm_gem_object_put_unlocked(gem_obj);
283
284 return ret;
285}
286
287static int panfrost_ioctl_mmap_bo(struct drm_device *dev, void *data,
288 struct drm_file *file_priv)
289{
290 struct drm_panfrost_mmap_bo *args = data;
291 struct drm_gem_object *gem_obj;
292 int ret;
293
294 if (args->flags != 0) {
295 DRM_INFO("unknown mmap_bo flags: %d\n", args->flags);
296 return -EINVAL;
297 }
298
299 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
300 if (!gem_obj) {
301 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
302 return -ENOENT;
303 }
304
305 /* Don't allow mmapping of heap objects as pages are not pinned. */
306 if (to_panfrost_bo(gem_obj)->is_heap)
307 return -EINVAL;
308
309 ret = drm_gem_create_mmap_offset(gem_obj);
310 if (ret == 0)
311 args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node);
312 drm_gem_object_put_unlocked(gem_obj);
313
314 return ret;
315}
316
317static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,
318 struct drm_file *file_priv)
319{
320 struct drm_panfrost_get_bo_offset *args = data;
321 struct drm_gem_object *gem_obj;
322 struct panfrost_gem_object *bo;
323
324 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
325 if (!gem_obj) {
326 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
327 return -ENOENT;
328 }
329 bo = to_panfrost_bo(gem_obj);
330
331 args->offset = bo->node.start << PAGE_SHIFT;
332
333 drm_gem_object_put_unlocked(gem_obj);
334 return 0;
335}
336
337static int panfrost_ioctl_madvise(struct drm_device *dev, void *data,
338 struct drm_file *file_priv)
339{
340 struct drm_panfrost_madvise *args = data;
341 struct panfrost_device *pfdev = dev->dev_private;
342 struct drm_gem_object *gem_obj;
343
344 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
345 if (!gem_obj) {
346 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
347 return -ENOENT;
348 }
349
350 args->retained = drm_gem_shmem_madvise(gem_obj, args->madv);
351
352 if (args->retained) {
353 struct panfrost_gem_object *bo = to_panfrost_bo(gem_obj);
354
355 mutex_lock(&pfdev->shrinker_lock);
356
357 if (args->madv == PANFROST_MADV_DONTNEED)
358 list_add_tail(&bo->base.madv_list, &pfdev->shrinker_list);
359 else if (args->madv == PANFROST_MADV_WILLNEED)
360 list_del_init(&bo->base.madv_list);
361
362 mutex_unlock(&pfdev->shrinker_lock);
363 }
364
365 drm_gem_object_put_unlocked(gem_obj);
366 return 0;
367}
368
369int panfrost_unstable_ioctl_check(void)
370{
371 if (!unstable_ioctls)
372 return -ENOSYS;
373
374 return 0;
375}
376
377#define PFN_4G (SZ_4G >> PAGE_SHIFT)
378#define PFN_4G_MASK (PFN_4G - 1)
379#define PFN_16M (SZ_16M >> PAGE_SHIFT)
380
381static void panfrost_drm_mm_color_adjust(const struct drm_mm_node *node,
382 unsigned long color,
383 u64 *start, u64 *end)
384{
385 /* Executable buffers can't start or end on a 4GB boundary */
386 if (!(color & PANFROST_BO_NOEXEC)) {
387 u64 next_seg;
388
389 if ((*start & PFN_4G_MASK) == 0)
390 (*start)++;
391
392 if ((*end & PFN_4G_MASK) == 0)
393 (*end)--;
394
395 next_seg = ALIGN(*start, PFN_4G);
396 if (next_seg - *start <= PFN_16M)
397 *start = next_seg + 1;
398
399 *end = min(*end, ALIGN(*start, PFN_4G) - 1);
400 }
401}
402
403static int
404panfrost_open(struct drm_device *dev, struct drm_file *file)
405{
406 int ret;
407 struct panfrost_device *pfdev = dev->dev_private;
408 struct panfrost_file_priv *panfrost_priv;
409
410 panfrost_priv = kzalloc(sizeof(*panfrost_priv), GFP_KERNEL);
411 if (!panfrost_priv)
412 return -ENOMEM;
413
414 panfrost_priv->pfdev = pfdev;
415 file->driver_priv = panfrost_priv;
416
417 spin_lock_init(&panfrost_priv->mm_lock);
418
419 /* 4G enough for now. can be 48-bit */
420 drm_mm_init(&panfrost_priv->mm, SZ_32M >> PAGE_SHIFT, (SZ_4G - SZ_32M) >> PAGE_SHIFT);
421 panfrost_priv->mm.color_adjust = panfrost_drm_mm_color_adjust;
422
423 ret = panfrost_mmu_pgtable_alloc(panfrost_priv);
424 if (ret)
425 goto err_pgtable;
426
427 ret = panfrost_job_open(panfrost_priv);
428 if (ret)
429 goto err_job;
430
431 return 0;
432
433err_job:
434 panfrost_mmu_pgtable_free(panfrost_priv);
435err_pgtable:
436 drm_mm_takedown(&panfrost_priv->mm);
437 kfree(panfrost_priv);
438 return ret;
439}
440
441static void
442panfrost_postclose(struct drm_device *dev, struct drm_file *file)
443{
444 struct panfrost_file_priv *panfrost_priv = file->driver_priv;
445
446 panfrost_perfcnt_close(panfrost_priv);
447 panfrost_job_close(panfrost_priv);
448
449 panfrost_mmu_pgtable_free(panfrost_priv);
450 drm_mm_takedown(&panfrost_priv->mm);
451 kfree(panfrost_priv);
452}
453
454/* DRM_AUTH is required on SUBMIT for now, while all clients share a single
455 * address space. Note that render nodes would be able to submit jobs that
456 * could access BOs from clients authenticated with the master node.
457 */
458static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = {
459#define PANFROST_IOCTL(n, func, flags) \
460 DRM_IOCTL_DEF_DRV(PANFROST_##n, panfrost_ioctl_##func, flags)
461
462 PANFROST_IOCTL(SUBMIT, submit, DRM_RENDER_ALLOW | DRM_AUTH),
463 PANFROST_IOCTL(WAIT_BO, wait_bo, DRM_RENDER_ALLOW),
464 PANFROST_IOCTL(CREATE_BO, create_bo, DRM_RENDER_ALLOW),
465 PANFROST_IOCTL(MMAP_BO, mmap_bo, DRM_RENDER_ALLOW),
466 PANFROST_IOCTL(GET_PARAM, get_param, DRM_RENDER_ALLOW),
467 PANFROST_IOCTL(GET_BO_OFFSET, get_bo_offset, DRM_RENDER_ALLOW),
468 PANFROST_IOCTL(PERFCNT_ENABLE, perfcnt_enable, DRM_RENDER_ALLOW),
469 PANFROST_IOCTL(PERFCNT_DUMP, perfcnt_dump, DRM_RENDER_ALLOW),
470 PANFROST_IOCTL(MADVISE, madvise, DRM_RENDER_ALLOW),
471};
472
473DEFINE_DRM_GEM_SHMEM_FOPS(panfrost_drm_driver_fops);
474
475/*
476 * Panfrost driver version:
477 * - 1.0 - initial interface
478 * - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO
479 */
480static struct drm_driver panfrost_drm_driver = {
481 .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
482 .open = panfrost_open,
483 .postclose = panfrost_postclose,
484 .ioctls = panfrost_drm_driver_ioctls,
485 .num_ioctls = ARRAY_SIZE(panfrost_drm_driver_ioctls),
486 .fops = &panfrost_drm_driver_fops,
487 .name = "panfrost",
488 .desc = "panfrost DRM",
489 .date = "20180908",
490 .major = 1,
491 .minor = 1,
492
493 .gem_create_object = panfrost_gem_create_object,
494 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
495 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
496 .gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table,
497 .gem_prime_mmap = drm_gem_prime_mmap,
498};
499
500static int panfrost_probe(struct platform_device *pdev)
501{
502 struct panfrost_device *pfdev;
503 struct drm_device *ddev;
504 int err;
505
506 pfdev = devm_kzalloc(&pdev->dev, sizeof(*pfdev), GFP_KERNEL);
507 if (!pfdev)
508 return -ENOMEM;
509
510 pfdev->pdev = pdev;
511 pfdev->dev = &pdev->dev;
512
513 platform_set_drvdata(pdev, pfdev);
514
515 /* Allocate and initialze the DRM device. */
516 ddev = drm_dev_alloc(&panfrost_drm_driver, &pdev->dev);
517 if (IS_ERR(ddev))
518 return PTR_ERR(ddev);
519
520 ddev->dev_private = pfdev;
521 pfdev->ddev = ddev;
522
523 mutex_init(&pfdev->shrinker_lock);
524 INIT_LIST_HEAD(&pfdev->shrinker_list);
525
526 err = panfrost_device_init(pfdev);
527 if (err) {
528 if (err != -EPROBE_DEFER)
529 dev_err(&pdev->dev, "Fatal error during GPU init\n");
530 goto err_out0;
531 }
532
533 err = panfrost_devfreq_init(pfdev);
534 if (err) {
535 if (err != -EPROBE_DEFER)
536 dev_err(&pdev->dev, "Fatal error during devfreq init\n");
537 goto err_out1;
538 }
539
540 pm_runtime_set_active(pfdev->dev);
541 pm_runtime_mark_last_busy(pfdev->dev);
542 pm_runtime_enable(pfdev->dev);
543 pm_runtime_set_autosuspend_delay(pfdev->dev, 50); /* ~3 frames */
544 pm_runtime_use_autosuspend(pfdev->dev);
545
546 /*
547 * Register the DRM device with the core and the connectors with
548 * sysfs
549 */
550 err = drm_dev_register(ddev, 0);
551 if (err < 0)
552 goto err_out2;
553
554 panfrost_gem_shrinker_init(ddev);
555
556 return 0;
557
558err_out2:
559 pm_runtime_disable(pfdev->dev);
560 panfrost_devfreq_fini(pfdev);
561err_out1:
562 panfrost_device_fini(pfdev);
563err_out0:
564 drm_dev_put(ddev);
565 return err;
566}
567
568static int panfrost_remove(struct platform_device *pdev)
569{
570 struct panfrost_device *pfdev = platform_get_drvdata(pdev);
571 struct drm_device *ddev = pfdev->ddev;
572
573 drm_dev_unregister(ddev);
574 panfrost_gem_shrinker_cleanup(ddev);
575
576 pm_runtime_get_sync(pfdev->dev);
577 panfrost_devfreq_fini(pfdev);
578 panfrost_device_fini(pfdev);
579 pm_runtime_put_sync_suspend(pfdev->dev);
580 pm_runtime_disable(pfdev->dev);
581
582 drm_dev_put(ddev);
583 return 0;
584}
585
586static const struct of_device_id dt_match[] = {
587 { .compatible = "arm,mali-t604" },
588 { .compatible = "arm,mali-t624" },
589 { .compatible = "arm,mali-t628" },
590 { .compatible = "arm,mali-t720" },
591 { .compatible = "arm,mali-t760" },
592 { .compatible = "arm,mali-t820" },
593 { .compatible = "arm,mali-t830" },
594 { .compatible = "arm,mali-t860" },
595 { .compatible = "arm,mali-t880" },
596 {}
597};
598MODULE_DEVICE_TABLE(of, dt_match);
599
600static const struct dev_pm_ops panfrost_pm_ops = {
601 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
602 SET_RUNTIME_PM_OPS(panfrost_device_suspend, panfrost_device_resume, NULL)
603};
604
605static struct platform_driver panfrost_driver = {
606 .probe = panfrost_probe,
607 .remove = panfrost_remove,
608 .driver = {
609 .name = "panfrost",
610 .pm = &panfrost_pm_ops,
611 .of_match_table = dt_match,
612 },
613};
614module_platform_driver(panfrost_driver);
615
616MODULE_AUTHOR("Panfrost Project Developers");
617MODULE_DESCRIPTION("Panfrost DRM Driver");
618MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
3/* Copyright 2019 Linaro, Ltd., Rob Herring <robh@kernel.org> */
4/* Copyright 2019 Collabora ltd. */
5
6#include <linux/module.h>
7#include <linux/of.h>
8#include <linux/pagemap.h>
9#include <linux/platform_device.h>
10#include <linux/pm_runtime.h>
11#include <drm/panfrost_drm.h>
12#include <drm/drm_drv.h>
13#include <drm/drm_ioctl.h>
14#include <drm/drm_syncobj.h>
15#include <drm/drm_utils.h>
16
17#include "panfrost_device.h"
18#include "panfrost_gem.h"
19#include "panfrost_mmu.h"
20#include "panfrost_job.h"
21#include "panfrost_gpu.h"
22#include "panfrost_perfcnt.h"
23#include "panfrost_debugfs.h"
24
25static bool unstable_ioctls;
26module_param_unsafe(unstable_ioctls, bool, 0600);
27
28static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct drm_file *file)
29{
30 struct drm_panfrost_get_param *param = data;
31 struct panfrost_device *pfdev = ddev->dev_private;
32
33 if (param->pad != 0)
34 return -EINVAL;
35
36#define PANFROST_FEATURE(name, member) \
37 case DRM_PANFROST_PARAM_ ## name: \
38 param->value = pfdev->features.member; \
39 break
40#define PANFROST_FEATURE_ARRAY(name, member, max) \
41 case DRM_PANFROST_PARAM_ ## name ## 0 ... \
42 DRM_PANFROST_PARAM_ ## name ## max: \
43 param->value = pfdev->features.member[param->param - \
44 DRM_PANFROST_PARAM_ ## name ## 0]; \
45 break
46
47 switch (param->param) {
48 PANFROST_FEATURE(GPU_PROD_ID, id);
49 PANFROST_FEATURE(GPU_REVISION, revision);
50 PANFROST_FEATURE(SHADER_PRESENT, shader_present);
51 PANFROST_FEATURE(TILER_PRESENT, tiler_present);
52 PANFROST_FEATURE(L2_PRESENT, l2_present);
53 PANFROST_FEATURE(STACK_PRESENT, stack_present);
54 PANFROST_FEATURE(AS_PRESENT, as_present);
55 PANFROST_FEATURE(JS_PRESENT, js_present);
56 PANFROST_FEATURE(L2_FEATURES, l2_features);
57 PANFROST_FEATURE(CORE_FEATURES, core_features);
58 PANFROST_FEATURE(TILER_FEATURES, tiler_features);
59 PANFROST_FEATURE(MEM_FEATURES, mem_features);
60 PANFROST_FEATURE(MMU_FEATURES, mmu_features);
61 PANFROST_FEATURE(THREAD_FEATURES, thread_features);
62 PANFROST_FEATURE(MAX_THREADS, max_threads);
63 PANFROST_FEATURE(THREAD_MAX_WORKGROUP_SZ,
64 thread_max_workgroup_sz);
65 PANFROST_FEATURE(THREAD_MAX_BARRIER_SZ,
66 thread_max_barrier_sz);
67 PANFROST_FEATURE(COHERENCY_FEATURES, coherency_features);
68 PANFROST_FEATURE(AFBC_FEATURES, afbc_features);
69 PANFROST_FEATURE_ARRAY(TEXTURE_FEATURES, texture_features, 3);
70 PANFROST_FEATURE_ARRAY(JS_FEATURES, js_features, 15);
71 PANFROST_FEATURE(NR_CORE_GROUPS, nr_core_groups);
72 PANFROST_FEATURE(THREAD_TLS_ALLOC, thread_tls_alloc);
73 default:
74 return -EINVAL;
75 }
76
77 return 0;
78}
79
80static int panfrost_ioctl_create_bo(struct drm_device *dev, void *data,
81 struct drm_file *file)
82{
83 struct panfrost_file_priv *priv = file->driver_priv;
84 struct panfrost_gem_object *bo;
85 struct drm_panfrost_create_bo *args = data;
86 struct panfrost_gem_mapping *mapping;
87 int ret;
88
89 if (!args->size || args->pad ||
90 (args->flags & ~(PANFROST_BO_NOEXEC | PANFROST_BO_HEAP)))
91 return -EINVAL;
92
93 /* Heaps should never be executable */
94 if ((args->flags & PANFROST_BO_HEAP) &&
95 !(args->flags & PANFROST_BO_NOEXEC))
96 return -EINVAL;
97
98 bo = panfrost_gem_create(dev, args->size, args->flags);
99 if (IS_ERR(bo))
100 return PTR_ERR(bo);
101
102 ret = drm_gem_handle_create(file, &bo->base.base, &args->handle);
103 if (ret)
104 goto out;
105
106 mapping = panfrost_gem_mapping_get(bo, priv);
107 if (mapping) {
108 args->offset = mapping->mmnode.start << PAGE_SHIFT;
109 panfrost_gem_mapping_put(mapping);
110 } else {
111 /* This can only happen if the handle from
112 * drm_gem_handle_create() has already been guessed and freed
113 * by user space
114 */
115 ret = -EINVAL;
116 }
117
118out:
119 drm_gem_object_put(&bo->base.base);
120 return ret;
121}
122
123/**
124 * panfrost_lookup_bos() - Sets up job->bo[] with the GEM objects
125 * referenced by the job.
126 * @dev: DRM device
127 * @file_priv: DRM file for this fd
128 * @args: IOCTL args
129 * @job: job being set up
130 *
131 * Resolve handles from userspace to BOs and attach them to job.
132 *
133 * Note that this function doesn't need to unreference the BOs on
134 * failure, because that will happen at panfrost_job_cleanup() time.
135 */
136static int
137panfrost_lookup_bos(struct drm_device *dev,
138 struct drm_file *file_priv,
139 struct drm_panfrost_submit *args,
140 struct panfrost_job *job)
141{
142 struct panfrost_file_priv *priv = file_priv->driver_priv;
143 struct panfrost_gem_object *bo;
144 unsigned int i;
145 int ret;
146
147 job->bo_count = args->bo_handle_count;
148
149 if (!job->bo_count)
150 return 0;
151
152 ret = drm_gem_objects_lookup(file_priv,
153 (void __user *)(uintptr_t)args->bo_handles,
154 job->bo_count, &job->bos);
155 if (ret)
156 return ret;
157
158 job->mappings = kvmalloc_array(job->bo_count,
159 sizeof(struct panfrost_gem_mapping *),
160 GFP_KERNEL | __GFP_ZERO);
161 if (!job->mappings)
162 return -ENOMEM;
163
164 for (i = 0; i < job->bo_count; i++) {
165 struct panfrost_gem_mapping *mapping;
166
167 bo = to_panfrost_bo(job->bos[i]);
168 mapping = panfrost_gem_mapping_get(bo, priv);
169 if (!mapping) {
170 ret = -EINVAL;
171 break;
172 }
173
174 atomic_inc(&bo->gpu_usecount);
175 job->mappings[i] = mapping;
176 }
177
178 return ret;
179}
180
181/**
182 * panfrost_copy_in_sync() - Sets up job->deps with the sync objects
183 * referenced by the job.
184 * @dev: DRM device
185 * @file_priv: DRM file for this fd
186 * @args: IOCTL args
187 * @job: job being set up
188 *
189 * Resolve syncobjs from userspace to fences and attach them to job.
190 *
191 * Note that this function doesn't need to unreference the fences on
192 * failure, because that will happen at panfrost_job_cleanup() time.
193 */
194static int
195panfrost_copy_in_sync(struct drm_device *dev,
196 struct drm_file *file_priv,
197 struct drm_panfrost_submit *args,
198 struct panfrost_job *job)
199{
200 u32 *handles;
201 int ret = 0;
202 int i, in_fence_count;
203
204 in_fence_count = args->in_sync_count;
205
206 if (!in_fence_count)
207 return 0;
208
209 handles = kvmalloc_array(in_fence_count, sizeof(u32), GFP_KERNEL);
210 if (!handles) {
211 ret = -ENOMEM;
212 DRM_DEBUG("Failed to allocate incoming syncobj handles\n");
213 goto fail;
214 }
215
216 if (copy_from_user(handles,
217 (void __user *)(uintptr_t)args->in_syncs,
218 in_fence_count * sizeof(u32))) {
219 ret = -EFAULT;
220 DRM_DEBUG("Failed to copy in syncobj handles\n");
221 goto fail;
222 }
223
224 for (i = 0; i < in_fence_count; i++) {
225 ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv,
226 handles[i], 0);
227 if (ret)
228 goto fail;
229 }
230
231fail:
232 kvfree(handles);
233 return ret;
234}
235
236static int panfrost_ioctl_submit(struct drm_device *dev, void *data,
237 struct drm_file *file)
238{
239 struct panfrost_device *pfdev = dev->dev_private;
240 struct panfrost_file_priv *file_priv = file->driver_priv;
241 struct drm_panfrost_submit *args = data;
242 struct drm_syncobj *sync_out = NULL;
243 struct panfrost_job *job;
244 int ret = 0, slot;
245
246 if (!args->jc)
247 return -EINVAL;
248
249 if (args->requirements && args->requirements != PANFROST_JD_REQ_FS)
250 return -EINVAL;
251
252 if (args->out_sync > 0) {
253 sync_out = drm_syncobj_find(file, args->out_sync);
254 if (!sync_out)
255 return -ENODEV;
256 }
257
258 job = kzalloc(sizeof(*job), GFP_KERNEL);
259 if (!job) {
260 ret = -ENOMEM;
261 goto out_put_syncout;
262 }
263
264 kref_init(&job->refcount);
265
266 job->pfdev = pfdev;
267 job->jc = args->jc;
268 job->requirements = args->requirements;
269 job->flush_id = panfrost_gpu_get_latest_flush_id(pfdev);
270 job->mmu = file_priv->mmu;
271 job->engine_usage = &file_priv->engine_usage;
272
273 slot = panfrost_job_get_slot(job);
274
275 ret = drm_sched_job_init(&job->base,
276 &file_priv->sched_entity[slot],
277 1, NULL);
278 if (ret)
279 goto out_put_job;
280
281 ret = panfrost_copy_in_sync(dev, file, args, job);
282 if (ret)
283 goto out_cleanup_job;
284
285 ret = panfrost_lookup_bos(dev, file, args, job);
286 if (ret)
287 goto out_cleanup_job;
288
289 ret = panfrost_job_push(job);
290 if (ret)
291 goto out_cleanup_job;
292
293 /* Update the return sync object for the job */
294 if (sync_out)
295 drm_syncobj_replace_fence(sync_out, job->render_done_fence);
296
297out_cleanup_job:
298 if (ret)
299 drm_sched_job_cleanup(&job->base);
300out_put_job:
301 panfrost_job_put(job);
302out_put_syncout:
303 if (sync_out)
304 drm_syncobj_put(sync_out);
305
306 return ret;
307}
308
309static int
310panfrost_ioctl_wait_bo(struct drm_device *dev, void *data,
311 struct drm_file *file_priv)
312{
313 long ret;
314 struct drm_panfrost_wait_bo *args = data;
315 struct drm_gem_object *gem_obj;
316 unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns);
317
318 if (args->pad)
319 return -EINVAL;
320
321 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
322 if (!gem_obj)
323 return -ENOENT;
324
325 ret = dma_resv_wait_timeout(gem_obj->resv, DMA_RESV_USAGE_READ,
326 true, timeout);
327 if (!ret)
328 ret = timeout ? -ETIMEDOUT : -EBUSY;
329
330 drm_gem_object_put(gem_obj);
331
332 return ret;
333}
334
335static int panfrost_ioctl_mmap_bo(struct drm_device *dev, void *data,
336 struct drm_file *file_priv)
337{
338 struct drm_panfrost_mmap_bo *args = data;
339 struct drm_gem_object *gem_obj;
340 int ret;
341
342 if (args->flags != 0) {
343 DRM_INFO("unknown mmap_bo flags: %d\n", args->flags);
344 return -EINVAL;
345 }
346
347 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
348 if (!gem_obj) {
349 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
350 return -ENOENT;
351 }
352
353 /* Don't allow mmapping of heap objects as pages are not pinned. */
354 if (to_panfrost_bo(gem_obj)->is_heap) {
355 ret = -EINVAL;
356 goto out;
357 }
358
359 ret = drm_gem_create_mmap_offset(gem_obj);
360 if (ret == 0)
361 args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node);
362
363out:
364 drm_gem_object_put(gem_obj);
365 return ret;
366}
367
368static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,
369 struct drm_file *file_priv)
370{
371 struct panfrost_file_priv *priv = file_priv->driver_priv;
372 struct drm_panfrost_get_bo_offset *args = data;
373 struct panfrost_gem_mapping *mapping;
374 struct drm_gem_object *gem_obj;
375 struct panfrost_gem_object *bo;
376
377 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
378 if (!gem_obj) {
379 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
380 return -ENOENT;
381 }
382 bo = to_panfrost_bo(gem_obj);
383
384 mapping = panfrost_gem_mapping_get(bo, priv);
385 drm_gem_object_put(gem_obj);
386
387 if (!mapping)
388 return -EINVAL;
389
390 args->offset = mapping->mmnode.start << PAGE_SHIFT;
391 panfrost_gem_mapping_put(mapping);
392 return 0;
393}
394
395static int panfrost_ioctl_madvise(struct drm_device *dev, void *data,
396 struct drm_file *file_priv)
397{
398 struct panfrost_file_priv *priv = file_priv->driver_priv;
399 struct drm_panfrost_madvise *args = data;
400 struct panfrost_device *pfdev = dev->dev_private;
401 struct drm_gem_object *gem_obj;
402 struct panfrost_gem_object *bo;
403 int ret = 0;
404
405 gem_obj = drm_gem_object_lookup(file_priv, args->handle);
406 if (!gem_obj) {
407 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
408 return -ENOENT;
409 }
410
411 bo = to_panfrost_bo(gem_obj);
412
413 ret = dma_resv_lock_interruptible(bo->base.base.resv, NULL);
414 if (ret)
415 goto out_put_object;
416
417 mutex_lock(&pfdev->shrinker_lock);
418 mutex_lock(&bo->mappings.lock);
419 if (args->madv == PANFROST_MADV_DONTNEED) {
420 struct panfrost_gem_mapping *first;
421
422 first = list_first_entry(&bo->mappings.list,
423 struct panfrost_gem_mapping,
424 node);
425
426 /*
427 * If we want to mark the BO purgeable, there must be only one
428 * user: the caller FD.
429 * We could do something smarter and mark the BO purgeable only
430 * when all its users have marked it purgeable, but globally
431 * visible/shared BOs are likely to never be marked purgeable
432 * anyway, so let's not bother.
433 */
434 if (!list_is_singular(&bo->mappings.list) ||
435 WARN_ON_ONCE(first->mmu != priv->mmu)) {
436 ret = -EINVAL;
437 goto out_unlock_mappings;
438 }
439 }
440
441 args->retained = drm_gem_shmem_madvise(&bo->base, args->madv);
442
443 if (args->retained) {
444 if (args->madv == PANFROST_MADV_DONTNEED)
445 list_move_tail(&bo->base.madv_list,
446 &pfdev->shrinker_list);
447 else if (args->madv == PANFROST_MADV_WILLNEED)
448 list_del_init(&bo->base.madv_list);
449 }
450
451out_unlock_mappings:
452 mutex_unlock(&bo->mappings.lock);
453 mutex_unlock(&pfdev->shrinker_lock);
454 dma_resv_unlock(bo->base.base.resv);
455out_put_object:
456 drm_gem_object_put(gem_obj);
457 return ret;
458}
459
460int panfrost_unstable_ioctl_check(void)
461{
462 if (!unstable_ioctls)
463 return -ENOSYS;
464
465 return 0;
466}
467
468static int
469panfrost_open(struct drm_device *dev, struct drm_file *file)
470{
471 int ret;
472 struct panfrost_device *pfdev = dev->dev_private;
473 struct panfrost_file_priv *panfrost_priv;
474
475 panfrost_priv = kzalloc(sizeof(*panfrost_priv), GFP_KERNEL);
476 if (!panfrost_priv)
477 return -ENOMEM;
478
479 panfrost_priv->pfdev = pfdev;
480 file->driver_priv = panfrost_priv;
481
482 panfrost_priv->mmu = panfrost_mmu_ctx_create(pfdev);
483 if (IS_ERR(panfrost_priv->mmu)) {
484 ret = PTR_ERR(panfrost_priv->mmu);
485 goto err_free;
486 }
487
488 ret = panfrost_job_open(panfrost_priv);
489 if (ret)
490 goto err_job;
491
492 return 0;
493
494err_job:
495 panfrost_mmu_ctx_put(panfrost_priv->mmu);
496err_free:
497 kfree(panfrost_priv);
498 return ret;
499}
500
501static void
502panfrost_postclose(struct drm_device *dev, struct drm_file *file)
503{
504 struct panfrost_file_priv *panfrost_priv = file->driver_priv;
505
506 panfrost_perfcnt_close(file);
507 panfrost_job_close(panfrost_priv);
508
509 panfrost_mmu_ctx_put(panfrost_priv->mmu);
510 kfree(panfrost_priv);
511}
512
513static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = {
514#define PANFROST_IOCTL(n, func, flags) \
515 DRM_IOCTL_DEF_DRV(PANFROST_##n, panfrost_ioctl_##func, flags)
516
517 PANFROST_IOCTL(SUBMIT, submit, DRM_RENDER_ALLOW),
518 PANFROST_IOCTL(WAIT_BO, wait_bo, DRM_RENDER_ALLOW),
519 PANFROST_IOCTL(CREATE_BO, create_bo, DRM_RENDER_ALLOW),
520 PANFROST_IOCTL(MMAP_BO, mmap_bo, DRM_RENDER_ALLOW),
521 PANFROST_IOCTL(GET_PARAM, get_param, DRM_RENDER_ALLOW),
522 PANFROST_IOCTL(GET_BO_OFFSET, get_bo_offset, DRM_RENDER_ALLOW),
523 PANFROST_IOCTL(PERFCNT_ENABLE, perfcnt_enable, DRM_RENDER_ALLOW),
524 PANFROST_IOCTL(PERFCNT_DUMP, perfcnt_dump, DRM_RENDER_ALLOW),
525 PANFROST_IOCTL(MADVISE, madvise, DRM_RENDER_ALLOW),
526};
527
528static void panfrost_gpu_show_fdinfo(struct panfrost_device *pfdev,
529 struct panfrost_file_priv *panfrost_priv,
530 struct drm_printer *p)
531{
532 int i;
533
534 /*
535 * IMPORTANT NOTE: drm-cycles and drm-engine measurements are not
536 * accurate, as they only provide a rough estimation of the number of
537 * GPU cycles and CPU time spent in a given context. This is due to two
538 * different factors:
539 * - Firstly, we must consider the time the CPU and then the kernel
540 * takes to process the GPU interrupt, which means additional time and
541 * GPU cycles will be added in excess to the real figure.
542 * - Secondly, the pipelining done by the Job Manager (2 job slots per
543 * engine) implies there is no way to know exactly how much time each
544 * job spent on the GPU.
545 */
546
547 static const char * const engine_names[] = {
548 "fragment", "vertex-tiler", "compute-only"
549 };
550
551 BUILD_BUG_ON(ARRAY_SIZE(engine_names) != NUM_JOB_SLOTS);
552
553 for (i = 0; i < NUM_JOB_SLOTS - 1; i++) {
554 drm_printf(p, "drm-engine-%s:\t%llu ns\n",
555 engine_names[i], panfrost_priv->engine_usage.elapsed_ns[i]);
556 drm_printf(p, "drm-cycles-%s:\t%llu\n",
557 engine_names[i], panfrost_priv->engine_usage.cycles[i]);
558 drm_printf(p, "drm-maxfreq-%s:\t%lu Hz\n",
559 engine_names[i], pfdev->pfdevfreq.fast_rate);
560 drm_printf(p, "drm-curfreq-%s:\t%lu Hz\n",
561 engine_names[i], pfdev->pfdevfreq.current_frequency);
562 }
563}
564
565static void panfrost_show_fdinfo(struct drm_printer *p, struct drm_file *file)
566{
567 struct drm_device *dev = file->minor->dev;
568 struct panfrost_device *pfdev = dev->dev_private;
569
570 panfrost_gpu_show_fdinfo(pfdev, file->driver_priv, p);
571
572 drm_show_memory_stats(p, file);
573}
574
575static const struct file_operations panfrost_drm_driver_fops = {
576 .owner = THIS_MODULE,
577 DRM_GEM_FOPS,
578 .show_fdinfo = drm_show_fdinfo,
579};
580
581/*
582 * Panfrost driver version:
583 * - 1.0 - initial interface
584 * - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO
585 * - 1.2 - adds AFBC_FEATURES query
586 */
587static const struct drm_driver panfrost_drm_driver = {
588 .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
589 .open = panfrost_open,
590 .postclose = panfrost_postclose,
591 .show_fdinfo = panfrost_show_fdinfo,
592 .ioctls = panfrost_drm_driver_ioctls,
593 .num_ioctls = ARRAY_SIZE(panfrost_drm_driver_ioctls),
594 .fops = &panfrost_drm_driver_fops,
595 .name = "panfrost",
596 .desc = "panfrost DRM",
597 .date = "20180908",
598 .major = 1,
599 .minor = 2,
600
601 .gem_create_object = panfrost_gem_create_object,
602 .gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table,
603
604#ifdef CONFIG_DEBUG_FS
605 .debugfs_init = panfrost_debugfs_init,
606#endif
607};
608
609static int panfrost_probe(struct platform_device *pdev)
610{
611 struct panfrost_device *pfdev;
612 struct drm_device *ddev;
613 int err;
614
615 pfdev = devm_kzalloc(&pdev->dev, sizeof(*pfdev), GFP_KERNEL);
616 if (!pfdev)
617 return -ENOMEM;
618
619 pfdev->pdev = pdev;
620 pfdev->dev = &pdev->dev;
621
622 platform_set_drvdata(pdev, pfdev);
623
624 pfdev->comp = of_device_get_match_data(&pdev->dev);
625 if (!pfdev->comp)
626 return -ENODEV;
627
628 pfdev->coherent = device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT;
629
630 /* Allocate and initialize the DRM device. */
631 ddev = drm_dev_alloc(&panfrost_drm_driver, &pdev->dev);
632 if (IS_ERR(ddev))
633 return PTR_ERR(ddev);
634
635 ddev->dev_private = pfdev;
636 pfdev->ddev = ddev;
637
638 mutex_init(&pfdev->shrinker_lock);
639 INIT_LIST_HEAD(&pfdev->shrinker_list);
640
641 err = panfrost_device_init(pfdev);
642 if (err) {
643 if (err != -EPROBE_DEFER)
644 dev_err(&pdev->dev, "Fatal error during GPU init\n");
645 goto err_out0;
646 }
647
648 pm_runtime_set_active(pfdev->dev);
649 pm_runtime_mark_last_busy(pfdev->dev);
650 pm_runtime_enable(pfdev->dev);
651 pm_runtime_set_autosuspend_delay(pfdev->dev, 50); /* ~3 frames */
652 pm_runtime_use_autosuspend(pfdev->dev);
653
654 /*
655 * Register the DRM device with the core and the connectors with
656 * sysfs
657 */
658 err = drm_dev_register(ddev, 0);
659 if (err < 0)
660 goto err_out1;
661
662 err = panfrost_gem_shrinker_init(ddev);
663 if (err)
664 goto err_out2;
665
666 return 0;
667
668err_out2:
669 drm_dev_unregister(ddev);
670err_out1:
671 pm_runtime_disable(pfdev->dev);
672 panfrost_device_fini(pfdev);
673 pm_runtime_set_suspended(pfdev->dev);
674err_out0:
675 drm_dev_put(ddev);
676 return err;
677}
678
679static void panfrost_remove(struct platform_device *pdev)
680{
681 struct panfrost_device *pfdev = platform_get_drvdata(pdev);
682 struct drm_device *ddev = pfdev->ddev;
683
684 drm_dev_unregister(ddev);
685 panfrost_gem_shrinker_cleanup(ddev);
686
687 pm_runtime_get_sync(pfdev->dev);
688 pm_runtime_disable(pfdev->dev);
689 panfrost_device_fini(pfdev);
690 pm_runtime_set_suspended(pfdev->dev);
691
692 drm_dev_put(ddev);
693}
694
695/*
696 * The OPP core wants the supply names to be NULL terminated, but we need the
697 * correct num_supplies value for regulator core. Hence, we NULL terminate here
698 * and then initialize num_supplies with ARRAY_SIZE - 1.
699 */
700static const char * const default_supplies[] = { "mali", NULL };
701static const struct panfrost_compatible default_data = {
702 .num_supplies = ARRAY_SIZE(default_supplies) - 1,
703 .supply_names = default_supplies,
704 .num_pm_domains = 1, /* optional */
705 .pm_domain_names = NULL,
706};
707
708static const struct panfrost_compatible amlogic_data = {
709 .num_supplies = ARRAY_SIZE(default_supplies) - 1,
710 .supply_names = default_supplies,
711 .vendor_quirk = panfrost_gpu_amlogic_quirk,
712};
713
714/*
715 * The old data with two power supplies for MT8183 is here only to
716 * keep retro-compatibility with older devicetrees, as DVFS will
717 * not work with this one.
718 *
719 * On new devicetrees please use the _b variant with a single and
720 * coupled regulators instead.
721 */
722static const char * const mediatek_mt8183_supplies[] = { "mali", "sram", NULL };
723static const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" };
724static const struct panfrost_compatible mediatek_mt8183_data = {
725 .num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies) - 1,
726 .supply_names = mediatek_mt8183_supplies,
727 .num_pm_domains = ARRAY_SIZE(mediatek_mt8183_pm_domains),
728 .pm_domain_names = mediatek_mt8183_pm_domains,
729};
730
731static const char * const mediatek_mt8183_b_supplies[] = { "mali", NULL };
732static const struct panfrost_compatible mediatek_mt8183_b_data = {
733 .num_supplies = ARRAY_SIZE(mediatek_mt8183_b_supplies) - 1,
734 .supply_names = mediatek_mt8183_b_supplies,
735 .num_pm_domains = ARRAY_SIZE(mediatek_mt8183_pm_domains),
736 .pm_domain_names = mediatek_mt8183_pm_domains,
737 .pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
738};
739
740static const char * const mediatek_mt8186_pm_domains[] = { "core0", "core1" };
741static const struct panfrost_compatible mediatek_mt8186_data = {
742 .num_supplies = ARRAY_SIZE(mediatek_mt8183_b_supplies) - 1,
743 .supply_names = mediatek_mt8183_b_supplies,
744 .num_pm_domains = ARRAY_SIZE(mediatek_mt8186_pm_domains),
745 .pm_domain_names = mediatek_mt8186_pm_domains,
746 .pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
747};
748
749static const char * const mediatek_mt8192_supplies[] = { "mali", NULL };
750static const char * const mediatek_mt8192_pm_domains[] = { "core0", "core1", "core2",
751 "core3", "core4" };
752static const struct panfrost_compatible mediatek_mt8192_data = {
753 .num_supplies = ARRAY_SIZE(mediatek_mt8192_supplies) - 1,
754 .supply_names = mediatek_mt8192_supplies,
755 .num_pm_domains = ARRAY_SIZE(mediatek_mt8192_pm_domains),
756 .pm_domain_names = mediatek_mt8192_pm_domains,
757 .pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
758};
759
760static const struct of_device_id dt_match[] = {
761 /* Set first to probe before the generic compatibles */
762 { .compatible = "amlogic,meson-gxm-mali",
763 .data = &amlogic_data, },
764 { .compatible = "amlogic,meson-g12a-mali",
765 .data = &amlogic_data, },
766 { .compatible = "arm,mali-t604", .data = &default_data, },
767 { .compatible = "arm,mali-t624", .data = &default_data, },
768 { .compatible = "arm,mali-t628", .data = &default_data, },
769 { .compatible = "arm,mali-t720", .data = &default_data, },
770 { .compatible = "arm,mali-t760", .data = &default_data, },
771 { .compatible = "arm,mali-t820", .data = &default_data, },
772 { .compatible = "arm,mali-t830", .data = &default_data, },
773 { .compatible = "arm,mali-t860", .data = &default_data, },
774 { .compatible = "arm,mali-t880", .data = &default_data, },
775 { .compatible = "arm,mali-bifrost", .data = &default_data, },
776 { .compatible = "arm,mali-valhall-jm", .data = &default_data, },
777 { .compatible = "mediatek,mt8183-mali", .data = &mediatek_mt8183_data },
778 { .compatible = "mediatek,mt8183b-mali", .data = &mediatek_mt8183_b_data },
779 { .compatible = "mediatek,mt8186-mali", .data = &mediatek_mt8186_data },
780 { .compatible = "mediatek,mt8192-mali", .data = &mediatek_mt8192_data },
781 {}
782};
783MODULE_DEVICE_TABLE(of, dt_match);
784
785static struct platform_driver panfrost_driver = {
786 .probe = panfrost_probe,
787 .remove_new = panfrost_remove,
788 .driver = {
789 .name = "panfrost",
790 .pm = pm_ptr(&panfrost_pm_ops),
791 .of_match_table = dt_match,
792 },
793};
794module_platform_driver(panfrost_driver);
795
796MODULE_AUTHOR("Panfrost Project Developers");
797MODULE_DESCRIPTION("Panfrost DRM Driver");
798MODULE_LICENSE("GPL v2");