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1/*
2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2016 NVIDIA CORPORATION. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/bitops.h>
11#include <linux/host1x.h>
12#include <linux/idr.h>
13#include <linux/iommu.h>
14
15#include <drm/drm_atomic.h>
16#include <drm/drm_atomic_helper.h>
17
18#include "drm.h"
19#include "gem.h"
20
21#define DRIVER_NAME "tegra"
22#define DRIVER_DESC "NVIDIA Tegra graphics"
23#define DRIVER_DATE "20120330"
24#define DRIVER_MAJOR 0
25#define DRIVER_MINOR 0
26#define DRIVER_PATCHLEVEL 0
27
28#define CARVEOUT_SZ SZ_64M
29#define CDMA_GATHER_FETCHES_MAX_NB 16383
30
31struct tegra_drm_file {
32 struct idr contexts;
33 struct mutex lock;
34};
35
36static int tegra_atomic_check(struct drm_device *drm,
37 struct drm_atomic_state *state)
38{
39 int err;
40
41 err = drm_atomic_helper_check_modeset(drm, state);
42 if (err < 0)
43 return err;
44
45 err = tegra_display_hub_atomic_check(drm, state);
46 if (err < 0)
47 return err;
48
49 err = drm_atomic_normalize_zpos(drm, state);
50 if (err < 0)
51 return err;
52
53 err = drm_atomic_helper_check_planes(drm, state);
54 if (err < 0)
55 return err;
56
57 if (state->legacy_cursor_update)
58 state->async_update = !drm_atomic_helper_async_check(drm, state);
59
60 return 0;
61}
62
63static const struct drm_mode_config_funcs tegra_drm_mode_config_funcs = {
64 .fb_create = tegra_fb_create,
65#ifdef CONFIG_DRM_FBDEV_EMULATION
66 .output_poll_changed = drm_fb_helper_output_poll_changed,
67#endif
68 .atomic_check = tegra_atomic_check,
69 .atomic_commit = drm_atomic_helper_commit,
70};
71
72static void tegra_atomic_commit_tail(struct drm_atomic_state *old_state)
73{
74 struct drm_device *drm = old_state->dev;
75 struct tegra_drm *tegra = drm->dev_private;
76
77 if (tegra->hub) {
78 drm_atomic_helper_commit_modeset_disables(drm, old_state);
79 tegra_display_hub_atomic_commit(drm, old_state);
80 drm_atomic_helper_commit_planes(drm, old_state, 0);
81 drm_atomic_helper_commit_modeset_enables(drm, old_state);
82 drm_atomic_helper_commit_hw_done(old_state);
83 drm_atomic_helper_wait_for_vblanks(drm, old_state);
84 drm_atomic_helper_cleanup_planes(drm, old_state);
85 } else {
86 drm_atomic_helper_commit_tail_rpm(old_state);
87 }
88}
89
90static const struct drm_mode_config_helper_funcs
91tegra_drm_mode_config_helpers = {
92 .atomic_commit_tail = tegra_atomic_commit_tail,
93};
94
95static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
96{
97 struct host1x_device *device = to_host1x_device(drm->dev);
98 struct tegra_drm *tegra;
99 int err;
100
101 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
102 if (!tegra)
103 return -ENOMEM;
104
105 if (iommu_present(&platform_bus_type)) {
106 u64 carveout_start, carveout_end, gem_start, gem_end;
107 struct iommu_domain_geometry *geometry;
108 unsigned long order;
109
110 tegra->domain = iommu_domain_alloc(&platform_bus_type);
111 if (!tegra->domain) {
112 err = -ENOMEM;
113 goto free;
114 }
115
116 geometry = &tegra->domain->geometry;
117 gem_start = geometry->aperture_start;
118 gem_end = geometry->aperture_end - CARVEOUT_SZ;
119 carveout_start = gem_end + 1;
120 carveout_end = geometry->aperture_end;
121
122 order = __ffs(tegra->domain->pgsize_bitmap);
123 init_iova_domain(&tegra->carveout.domain, 1UL << order,
124 carveout_start >> order);
125
126 tegra->carveout.shift = iova_shift(&tegra->carveout.domain);
127 tegra->carveout.limit = carveout_end >> tegra->carveout.shift;
128
129 drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1);
130 mutex_init(&tegra->mm_lock);
131
132 DRM_DEBUG("IOMMU apertures:\n");
133 DRM_DEBUG(" GEM: %#llx-%#llx\n", gem_start, gem_end);
134 DRM_DEBUG(" Carveout: %#llx-%#llx\n", carveout_start,
135 carveout_end);
136 }
137
138 mutex_init(&tegra->clients_lock);
139 INIT_LIST_HEAD(&tegra->clients);
140
141 drm->dev_private = tegra;
142 tegra->drm = drm;
143
144 drm_mode_config_init(drm);
145
146 drm->mode_config.min_width = 0;
147 drm->mode_config.min_height = 0;
148
149 drm->mode_config.max_width = 4096;
150 drm->mode_config.max_height = 4096;
151
152 drm->mode_config.allow_fb_modifiers = true;
153
154 drm->mode_config.funcs = &tegra_drm_mode_config_funcs;
155 drm->mode_config.helper_private = &tegra_drm_mode_config_helpers;
156
157 err = tegra_drm_fb_prepare(drm);
158 if (err < 0)
159 goto config;
160
161 drm_kms_helper_poll_init(drm);
162
163 err = host1x_device_init(device);
164 if (err < 0)
165 goto fbdev;
166
167 if (tegra->hub) {
168 err = tegra_display_hub_prepare(tegra->hub);
169 if (err < 0)
170 goto device;
171 }
172
173 /*
174 * We don't use the drm_irq_install() helpers provided by the DRM
175 * core, so we need to set this manually in order to allow the
176 * DRM_IOCTL_WAIT_VBLANK to operate correctly.
177 */
178 drm->irq_enabled = true;
179
180 /* syncpoints are used for full 32-bit hardware VBLANK counters */
181 drm->max_vblank_count = 0xffffffff;
182
183 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
184 if (err < 0)
185 goto hub;
186
187 drm_mode_config_reset(drm);
188
189 err = tegra_drm_fb_init(drm);
190 if (err < 0)
191 goto hub;
192
193 return 0;
194
195hub:
196 if (tegra->hub)
197 tegra_display_hub_cleanup(tegra->hub);
198device:
199 host1x_device_exit(device);
200fbdev:
201 drm_kms_helper_poll_fini(drm);
202 tegra_drm_fb_free(drm);
203config:
204 drm_mode_config_cleanup(drm);
205
206 if (tegra->domain) {
207 iommu_domain_free(tegra->domain);
208 drm_mm_takedown(&tegra->mm);
209 mutex_destroy(&tegra->mm_lock);
210 put_iova_domain(&tegra->carveout.domain);
211 }
212free:
213 kfree(tegra);
214 return err;
215}
216
217static void tegra_drm_unload(struct drm_device *drm)
218{
219 struct host1x_device *device = to_host1x_device(drm->dev);
220 struct tegra_drm *tegra = drm->dev_private;
221 int err;
222
223 drm_kms_helper_poll_fini(drm);
224 tegra_drm_fb_exit(drm);
225 drm_atomic_helper_shutdown(drm);
226 drm_mode_config_cleanup(drm);
227
228 err = host1x_device_exit(device);
229 if (err < 0)
230 return;
231
232 if (tegra->domain) {
233 iommu_domain_free(tegra->domain);
234 drm_mm_takedown(&tegra->mm);
235 mutex_destroy(&tegra->mm_lock);
236 put_iova_domain(&tegra->carveout.domain);
237 }
238
239 kfree(tegra);
240}
241
242static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
243{
244 struct tegra_drm_file *fpriv;
245
246 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
247 if (!fpriv)
248 return -ENOMEM;
249
250 idr_init(&fpriv->contexts);
251 mutex_init(&fpriv->lock);
252 filp->driver_priv = fpriv;
253
254 return 0;
255}
256
257static void tegra_drm_context_free(struct tegra_drm_context *context)
258{
259 context->client->ops->close_channel(context);
260 kfree(context);
261}
262
263static struct host1x_bo *
264host1x_bo_lookup(struct drm_file *file, u32 handle)
265{
266 struct drm_gem_object *gem;
267 struct tegra_bo *bo;
268
269 gem = drm_gem_object_lookup(file, handle);
270 if (!gem)
271 return NULL;
272
273 bo = to_tegra_bo(gem);
274 return &bo->base;
275}
276
277static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
278 struct drm_tegra_reloc __user *src,
279 struct drm_device *drm,
280 struct drm_file *file)
281{
282 u32 cmdbuf, target;
283 int err;
284
285 err = get_user(cmdbuf, &src->cmdbuf.handle);
286 if (err < 0)
287 return err;
288
289 err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset);
290 if (err < 0)
291 return err;
292
293 err = get_user(target, &src->target.handle);
294 if (err < 0)
295 return err;
296
297 err = get_user(dest->target.offset, &src->target.offset);
298 if (err < 0)
299 return err;
300
301 err = get_user(dest->shift, &src->shift);
302 if (err < 0)
303 return err;
304
305 dest->cmdbuf.bo = host1x_bo_lookup(file, cmdbuf);
306 if (!dest->cmdbuf.bo)
307 return -ENOENT;
308
309 dest->target.bo = host1x_bo_lookup(file, target);
310 if (!dest->target.bo)
311 return -ENOENT;
312
313 return 0;
314}
315
316static int host1x_waitchk_copy_from_user(struct host1x_waitchk *dest,
317 struct drm_tegra_waitchk __user *src,
318 struct drm_file *file)
319{
320 u32 cmdbuf;
321 int err;
322
323 err = get_user(cmdbuf, &src->handle);
324 if (err < 0)
325 return err;
326
327 err = get_user(dest->offset, &src->offset);
328 if (err < 0)
329 return err;
330
331 err = get_user(dest->syncpt_id, &src->syncpt);
332 if (err < 0)
333 return err;
334
335 err = get_user(dest->thresh, &src->thresh);
336 if (err < 0)
337 return err;
338
339 dest->bo = host1x_bo_lookup(file, cmdbuf);
340 if (!dest->bo)
341 return -ENOENT;
342
343 return 0;
344}
345
346int tegra_drm_submit(struct tegra_drm_context *context,
347 struct drm_tegra_submit *args, struct drm_device *drm,
348 struct drm_file *file)
349{
350 unsigned int num_cmdbufs = args->num_cmdbufs;
351 unsigned int num_relocs = args->num_relocs;
352 unsigned int num_waitchks = args->num_waitchks;
353 struct drm_tegra_cmdbuf __user *user_cmdbufs;
354 struct drm_tegra_reloc __user *user_relocs;
355 struct drm_tegra_waitchk __user *user_waitchks;
356 struct drm_tegra_syncpt __user *user_syncpt;
357 struct drm_tegra_syncpt syncpt;
358 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
359 struct drm_gem_object **refs;
360 struct host1x_syncpt *sp;
361 struct host1x_job *job;
362 unsigned int num_refs;
363 int err;
364
365 user_cmdbufs = u64_to_user_ptr(args->cmdbufs);
366 user_relocs = u64_to_user_ptr(args->relocs);
367 user_waitchks = u64_to_user_ptr(args->waitchks);
368 user_syncpt = u64_to_user_ptr(args->syncpts);
369
370 /* We don't yet support other than one syncpt_incr struct per submit */
371 if (args->num_syncpts != 1)
372 return -EINVAL;
373
374 /* We don't yet support waitchks */
375 if (args->num_waitchks != 0)
376 return -EINVAL;
377
378 job = host1x_job_alloc(context->channel, args->num_cmdbufs,
379 args->num_relocs, args->num_waitchks);
380 if (!job)
381 return -ENOMEM;
382
383 job->num_relocs = args->num_relocs;
384 job->num_waitchk = args->num_waitchks;
385 job->client = (u32)args->context;
386 job->class = context->client->base.class;
387 job->serialize = true;
388
389 /*
390 * Track referenced BOs so that they can be unreferenced after the
391 * submission is complete.
392 */
393 num_refs = num_cmdbufs + num_relocs * 2 + num_waitchks;
394
395 refs = kmalloc_array(num_refs, sizeof(*refs), GFP_KERNEL);
396 if (!refs) {
397 err = -ENOMEM;
398 goto put;
399 }
400
401 /* reuse as an iterator later */
402 num_refs = 0;
403
404 while (num_cmdbufs) {
405 struct drm_tegra_cmdbuf cmdbuf;
406 struct host1x_bo *bo;
407 struct tegra_bo *obj;
408 u64 offset;
409
410 if (copy_from_user(&cmdbuf, user_cmdbufs, sizeof(cmdbuf))) {
411 err = -EFAULT;
412 goto fail;
413 }
414
415 /*
416 * The maximum number of CDMA gather fetches is 16383, a higher
417 * value means the words count is malformed.
418 */
419 if (cmdbuf.words > CDMA_GATHER_FETCHES_MAX_NB) {
420 err = -EINVAL;
421 goto fail;
422 }
423
424 bo = host1x_bo_lookup(file, cmdbuf.handle);
425 if (!bo) {
426 err = -ENOENT;
427 goto fail;
428 }
429
430 offset = (u64)cmdbuf.offset + (u64)cmdbuf.words * sizeof(u32);
431 obj = host1x_to_tegra_bo(bo);
432 refs[num_refs++] = &obj->gem;
433
434 /*
435 * Gather buffer base address must be 4-bytes aligned,
436 * unaligned offset is malformed and cause commands stream
437 * corruption on the buffer address relocation.
438 */
439 if (offset & 3 || offset >= obj->gem.size) {
440 err = -EINVAL;
441 goto fail;
442 }
443
444 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
445 num_cmdbufs--;
446 user_cmdbufs++;
447 }
448
449 /* copy and resolve relocations from submit */
450 while (num_relocs--) {
451 struct host1x_reloc *reloc;
452 struct tegra_bo *obj;
453
454 err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs],
455 &user_relocs[num_relocs], drm,
456 file);
457 if (err < 0)
458 goto fail;
459
460 reloc = &job->relocarray[num_relocs];
461 obj = host1x_to_tegra_bo(reloc->cmdbuf.bo);
462 refs[num_refs++] = &obj->gem;
463
464 /*
465 * The unaligned cmdbuf offset will cause an unaligned write
466 * during of the relocations patching, corrupting the commands
467 * stream.
468 */
469 if (reloc->cmdbuf.offset & 3 ||
470 reloc->cmdbuf.offset >= obj->gem.size) {
471 err = -EINVAL;
472 goto fail;
473 }
474
475 obj = host1x_to_tegra_bo(reloc->target.bo);
476 refs[num_refs++] = &obj->gem;
477
478 if (reloc->target.offset >= obj->gem.size) {
479 err = -EINVAL;
480 goto fail;
481 }
482 }
483
484 /* copy and resolve waitchks from submit */
485 while (num_waitchks--) {
486 struct host1x_waitchk *wait = &job->waitchk[num_waitchks];
487 struct tegra_bo *obj;
488
489 err = host1x_waitchk_copy_from_user(
490 wait, &user_waitchks[num_waitchks], file);
491 if (err < 0)
492 goto fail;
493
494 obj = host1x_to_tegra_bo(wait->bo);
495 refs[num_refs++] = &obj->gem;
496
497 /*
498 * The unaligned offset will cause an unaligned write during
499 * of the waitchks patching, corrupting the commands stream.
500 */
501 if (wait->offset & 3 ||
502 wait->offset >= obj->gem.size) {
503 err = -EINVAL;
504 goto fail;
505 }
506 }
507
508 if (copy_from_user(&syncpt, user_syncpt, sizeof(syncpt))) {
509 err = -EFAULT;
510 goto fail;
511 }
512
513 /* check whether syncpoint ID is valid */
514 sp = host1x_syncpt_get(host1x, syncpt.id);
515 if (!sp) {
516 err = -ENOENT;
517 goto fail;
518 }
519
520 job->is_addr_reg = context->client->ops->is_addr_reg;
521 job->is_valid_class = context->client->ops->is_valid_class;
522 job->syncpt_incrs = syncpt.incrs;
523 job->syncpt_id = syncpt.id;
524 job->timeout = 10000;
525
526 if (args->timeout && args->timeout < 10000)
527 job->timeout = args->timeout;
528
529 err = host1x_job_pin(job, context->client->base.dev);
530 if (err)
531 goto fail;
532
533 err = host1x_job_submit(job);
534 if (err) {
535 host1x_job_unpin(job);
536 goto fail;
537 }
538
539 args->fence = job->syncpt_end;
540
541fail:
542 while (num_refs--)
543 drm_gem_object_put_unlocked(refs[num_refs]);
544
545 kfree(refs);
546
547put:
548 host1x_job_put(job);
549 return err;
550}
551
552
553#ifdef CONFIG_DRM_TEGRA_STAGING
554static int tegra_gem_create(struct drm_device *drm, void *data,
555 struct drm_file *file)
556{
557 struct drm_tegra_gem_create *args = data;
558 struct tegra_bo *bo;
559
560 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags,
561 &args->handle);
562 if (IS_ERR(bo))
563 return PTR_ERR(bo);
564
565 return 0;
566}
567
568static int tegra_gem_mmap(struct drm_device *drm, void *data,
569 struct drm_file *file)
570{
571 struct drm_tegra_gem_mmap *args = data;
572 struct drm_gem_object *gem;
573 struct tegra_bo *bo;
574
575 gem = drm_gem_object_lookup(file, args->handle);
576 if (!gem)
577 return -EINVAL;
578
579 bo = to_tegra_bo(gem);
580
581 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
582
583 drm_gem_object_put_unlocked(gem);
584
585 return 0;
586}
587
588static int tegra_syncpt_read(struct drm_device *drm, void *data,
589 struct drm_file *file)
590{
591 struct host1x *host = dev_get_drvdata(drm->dev->parent);
592 struct drm_tegra_syncpt_read *args = data;
593 struct host1x_syncpt *sp;
594
595 sp = host1x_syncpt_get(host, args->id);
596 if (!sp)
597 return -EINVAL;
598
599 args->value = host1x_syncpt_read_min(sp);
600 return 0;
601}
602
603static int tegra_syncpt_incr(struct drm_device *drm, void *data,
604 struct drm_file *file)
605{
606 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
607 struct drm_tegra_syncpt_incr *args = data;
608 struct host1x_syncpt *sp;
609
610 sp = host1x_syncpt_get(host1x, args->id);
611 if (!sp)
612 return -EINVAL;
613
614 return host1x_syncpt_incr(sp);
615}
616
617static int tegra_syncpt_wait(struct drm_device *drm, void *data,
618 struct drm_file *file)
619{
620 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
621 struct drm_tegra_syncpt_wait *args = data;
622 struct host1x_syncpt *sp;
623
624 sp = host1x_syncpt_get(host1x, args->id);
625 if (!sp)
626 return -EINVAL;
627
628 return host1x_syncpt_wait(sp, args->thresh,
629 msecs_to_jiffies(args->timeout),
630 &args->value);
631}
632
633static int tegra_client_open(struct tegra_drm_file *fpriv,
634 struct tegra_drm_client *client,
635 struct tegra_drm_context *context)
636{
637 int err;
638
639 err = client->ops->open_channel(client, context);
640 if (err < 0)
641 return err;
642
643 err = idr_alloc(&fpriv->contexts, context, 1, 0, GFP_KERNEL);
644 if (err < 0) {
645 client->ops->close_channel(context);
646 return err;
647 }
648
649 context->client = client;
650 context->id = err;
651
652 return 0;
653}
654
655static int tegra_open_channel(struct drm_device *drm, void *data,
656 struct drm_file *file)
657{
658 struct tegra_drm_file *fpriv = file->driver_priv;
659 struct tegra_drm *tegra = drm->dev_private;
660 struct drm_tegra_open_channel *args = data;
661 struct tegra_drm_context *context;
662 struct tegra_drm_client *client;
663 int err = -ENODEV;
664
665 context = kzalloc(sizeof(*context), GFP_KERNEL);
666 if (!context)
667 return -ENOMEM;
668
669 mutex_lock(&fpriv->lock);
670
671 list_for_each_entry(client, &tegra->clients, list)
672 if (client->base.class == args->client) {
673 err = tegra_client_open(fpriv, client, context);
674 if (err < 0)
675 break;
676
677 args->context = context->id;
678 break;
679 }
680
681 if (err < 0)
682 kfree(context);
683
684 mutex_unlock(&fpriv->lock);
685 return err;
686}
687
688static int tegra_close_channel(struct drm_device *drm, void *data,
689 struct drm_file *file)
690{
691 struct tegra_drm_file *fpriv = file->driver_priv;
692 struct drm_tegra_close_channel *args = data;
693 struct tegra_drm_context *context;
694 int err = 0;
695
696 mutex_lock(&fpriv->lock);
697
698 context = idr_find(&fpriv->contexts, args->context);
699 if (!context) {
700 err = -EINVAL;
701 goto unlock;
702 }
703
704 idr_remove(&fpriv->contexts, context->id);
705 tegra_drm_context_free(context);
706
707unlock:
708 mutex_unlock(&fpriv->lock);
709 return err;
710}
711
712static int tegra_get_syncpt(struct drm_device *drm, void *data,
713 struct drm_file *file)
714{
715 struct tegra_drm_file *fpriv = file->driver_priv;
716 struct drm_tegra_get_syncpt *args = data;
717 struct tegra_drm_context *context;
718 struct host1x_syncpt *syncpt;
719 int err = 0;
720
721 mutex_lock(&fpriv->lock);
722
723 context = idr_find(&fpriv->contexts, args->context);
724 if (!context) {
725 err = -ENODEV;
726 goto unlock;
727 }
728
729 if (args->index >= context->client->base.num_syncpts) {
730 err = -EINVAL;
731 goto unlock;
732 }
733
734 syncpt = context->client->base.syncpts[args->index];
735 args->id = host1x_syncpt_id(syncpt);
736
737unlock:
738 mutex_unlock(&fpriv->lock);
739 return err;
740}
741
742static int tegra_submit(struct drm_device *drm, void *data,
743 struct drm_file *file)
744{
745 struct tegra_drm_file *fpriv = file->driver_priv;
746 struct drm_tegra_submit *args = data;
747 struct tegra_drm_context *context;
748 int err;
749
750 mutex_lock(&fpriv->lock);
751
752 context = idr_find(&fpriv->contexts, args->context);
753 if (!context) {
754 err = -ENODEV;
755 goto unlock;
756 }
757
758 err = context->client->ops->submit(context, args, drm, file);
759
760unlock:
761 mutex_unlock(&fpriv->lock);
762 return err;
763}
764
765static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
766 struct drm_file *file)
767{
768 struct tegra_drm_file *fpriv = file->driver_priv;
769 struct drm_tegra_get_syncpt_base *args = data;
770 struct tegra_drm_context *context;
771 struct host1x_syncpt_base *base;
772 struct host1x_syncpt *syncpt;
773 int err = 0;
774
775 mutex_lock(&fpriv->lock);
776
777 context = idr_find(&fpriv->contexts, args->context);
778 if (!context) {
779 err = -ENODEV;
780 goto unlock;
781 }
782
783 if (args->syncpt >= context->client->base.num_syncpts) {
784 err = -EINVAL;
785 goto unlock;
786 }
787
788 syncpt = context->client->base.syncpts[args->syncpt];
789
790 base = host1x_syncpt_get_base(syncpt);
791 if (!base) {
792 err = -ENXIO;
793 goto unlock;
794 }
795
796 args->id = host1x_syncpt_base_id(base);
797
798unlock:
799 mutex_unlock(&fpriv->lock);
800 return err;
801}
802
803static int tegra_gem_set_tiling(struct drm_device *drm, void *data,
804 struct drm_file *file)
805{
806 struct drm_tegra_gem_set_tiling *args = data;
807 enum tegra_bo_tiling_mode mode;
808 struct drm_gem_object *gem;
809 unsigned long value = 0;
810 struct tegra_bo *bo;
811
812 switch (args->mode) {
813 case DRM_TEGRA_GEM_TILING_MODE_PITCH:
814 mode = TEGRA_BO_TILING_MODE_PITCH;
815
816 if (args->value != 0)
817 return -EINVAL;
818
819 break;
820
821 case DRM_TEGRA_GEM_TILING_MODE_TILED:
822 mode = TEGRA_BO_TILING_MODE_TILED;
823
824 if (args->value != 0)
825 return -EINVAL;
826
827 break;
828
829 case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
830 mode = TEGRA_BO_TILING_MODE_BLOCK;
831
832 if (args->value > 5)
833 return -EINVAL;
834
835 value = args->value;
836 break;
837
838 default:
839 return -EINVAL;
840 }
841
842 gem = drm_gem_object_lookup(file, args->handle);
843 if (!gem)
844 return -ENOENT;
845
846 bo = to_tegra_bo(gem);
847
848 bo->tiling.mode = mode;
849 bo->tiling.value = value;
850
851 drm_gem_object_put_unlocked(gem);
852
853 return 0;
854}
855
856static int tegra_gem_get_tiling(struct drm_device *drm, void *data,
857 struct drm_file *file)
858{
859 struct drm_tegra_gem_get_tiling *args = data;
860 struct drm_gem_object *gem;
861 struct tegra_bo *bo;
862 int err = 0;
863
864 gem = drm_gem_object_lookup(file, args->handle);
865 if (!gem)
866 return -ENOENT;
867
868 bo = to_tegra_bo(gem);
869
870 switch (bo->tiling.mode) {
871 case TEGRA_BO_TILING_MODE_PITCH:
872 args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
873 args->value = 0;
874 break;
875
876 case TEGRA_BO_TILING_MODE_TILED:
877 args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
878 args->value = 0;
879 break;
880
881 case TEGRA_BO_TILING_MODE_BLOCK:
882 args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
883 args->value = bo->tiling.value;
884 break;
885
886 default:
887 err = -EINVAL;
888 break;
889 }
890
891 drm_gem_object_put_unlocked(gem);
892
893 return err;
894}
895
896static int tegra_gem_set_flags(struct drm_device *drm, void *data,
897 struct drm_file *file)
898{
899 struct drm_tegra_gem_set_flags *args = data;
900 struct drm_gem_object *gem;
901 struct tegra_bo *bo;
902
903 if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
904 return -EINVAL;
905
906 gem = drm_gem_object_lookup(file, args->handle);
907 if (!gem)
908 return -ENOENT;
909
910 bo = to_tegra_bo(gem);
911 bo->flags = 0;
912
913 if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
914 bo->flags |= TEGRA_BO_BOTTOM_UP;
915
916 drm_gem_object_put_unlocked(gem);
917
918 return 0;
919}
920
921static int tegra_gem_get_flags(struct drm_device *drm, void *data,
922 struct drm_file *file)
923{
924 struct drm_tegra_gem_get_flags *args = data;
925 struct drm_gem_object *gem;
926 struct tegra_bo *bo;
927
928 gem = drm_gem_object_lookup(file, args->handle);
929 if (!gem)
930 return -ENOENT;
931
932 bo = to_tegra_bo(gem);
933 args->flags = 0;
934
935 if (bo->flags & TEGRA_BO_BOTTOM_UP)
936 args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
937
938 drm_gem_object_put_unlocked(gem);
939
940 return 0;
941}
942#endif
943
944static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
945#ifdef CONFIG_DRM_TEGRA_STAGING
946 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create,
947 DRM_UNLOCKED | DRM_RENDER_ALLOW),
948 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap,
949 DRM_UNLOCKED | DRM_RENDER_ALLOW),
950 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read,
951 DRM_UNLOCKED | DRM_RENDER_ALLOW),
952 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr,
953 DRM_UNLOCKED | DRM_RENDER_ALLOW),
954 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait,
955 DRM_UNLOCKED | DRM_RENDER_ALLOW),
956 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel,
957 DRM_UNLOCKED | DRM_RENDER_ALLOW),
958 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel,
959 DRM_UNLOCKED | DRM_RENDER_ALLOW),
960 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt,
961 DRM_UNLOCKED | DRM_RENDER_ALLOW),
962 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit,
963 DRM_UNLOCKED | DRM_RENDER_ALLOW),
964 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base,
965 DRM_UNLOCKED | DRM_RENDER_ALLOW),
966 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling,
967 DRM_UNLOCKED | DRM_RENDER_ALLOW),
968 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling,
969 DRM_UNLOCKED | DRM_RENDER_ALLOW),
970 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags,
971 DRM_UNLOCKED | DRM_RENDER_ALLOW),
972 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags,
973 DRM_UNLOCKED | DRM_RENDER_ALLOW),
974#endif
975};
976
977static const struct file_operations tegra_drm_fops = {
978 .owner = THIS_MODULE,
979 .open = drm_open,
980 .release = drm_release,
981 .unlocked_ioctl = drm_ioctl,
982 .mmap = tegra_drm_mmap,
983 .poll = drm_poll,
984 .read = drm_read,
985 .compat_ioctl = drm_compat_ioctl,
986 .llseek = noop_llseek,
987};
988
989static int tegra_drm_context_cleanup(int id, void *p, void *data)
990{
991 struct tegra_drm_context *context = p;
992
993 tegra_drm_context_free(context);
994
995 return 0;
996}
997
998static void tegra_drm_postclose(struct drm_device *drm, struct drm_file *file)
999{
1000 struct tegra_drm_file *fpriv = file->driver_priv;
1001
1002 mutex_lock(&fpriv->lock);
1003 idr_for_each(&fpriv->contexts, tegra_drm_context_cleanup, NULL);
1004 mutex_unlock(&fpriv->lock);
1005
1006 idr_destroy(&fpriv->contexts);
1007 mutex_destroy(&fpriv->lock);
1008 kfree(fpriv);
1009}
1010
1011#ifdef CONFIG_DEBUG_FS
1012static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
1013{
1014 struct drm_info_node *node = (struct drm_info_node *)s->private;
1015 struct drm_device *drm = node->minor->dev;
1016 struct drm_framebuffer *fb;
1017
1018 mutex_lock(&drm->mode_config.fb_lock);
1019
1020 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
1021 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
1022 fb->base.id, fb->width, fb->height,
1023 fb->format->depth,
1024 fb->format->cpp[0] * 8,
1025 drm_framebuffer_read_refcount(fb));
1026 }
1027
1028 mutex_unlock(&drm->mode_config.fb_lock);
1029
1030 return 0;
1031}
1032
1033static int tegra_debugfs_iova(struct seq_file *s, void *data)
1034{
1035 struct drm_info_node *node = (struct drm_info_node *)s->private;
1036 struct drm_device *drm = node->minor->dev;
1037 struct tegra_drm *tegra = drm->dev_private;
1038 struct drm_printer p = drm_seq_file_printer(s);
1039
1040 if (tegra->domain) {
1041 mutex_lock(&tegra->mm_lock);
1042 drm_mm_print(&tegra->mm, &p);
1043 mutex_unlock(&tegra->mm_lock);
1044 }
1045
1046 return 0;
1047}
1048
1049static struct drm_info_list tegra_debugfs_list[] = {
1050 { "framebuffers", tegra_debugfs_framebuffers, 0 },
1051 { "iova", tegra_debugfs_iova, 0 },
1052};
1053
1054static int tegra_debugfs_init(struct drm_minor *minor)
1055{
1056 return drm_debugfs_create_files(tegra_debugfs_list,
1057 ARRAY_SIZE(tegra_debugfs_list),
1058 minor->debugfs_root, minor);
1059}
1060#endif
1061
1062static struct drm_driver tegra_drm_driver = {
1063 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
1064 DRIVER_ATOMIC | DRIVER_RENDER,
1065 .load = tegra_drm_load,
1066 .unload = tegra_drm_unload,
1067 .open = tegra_drm_open,
1068 .postclose = tegra_drm_postclose,
1069 .lastclose = drm_fb_helper_lastclose,
1070
1071#if defined(CONFIG_DEBUG_FS)
1072 .debugfs_init = tegra_debugfs_init,
1073#endif
1074
1075 .gem_free_object_unlocked = tegra_bo_free_object,
1076 .gem_vm_ops = &tegra_bo_vm_ops,
1077
1078 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1079 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1080 .gem_prime_export = tegra_gem_prime_export,
1081 .gem_prime_import = tegra_gem_prime_import,
1082
1083 .dumb_create = tegra_bo_dumb_create,
1084
1085 .ioctls = tegra_drm_ioctls,
1086 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
1087 .fops = &tegra_drm_fops,
1088
1089 .name = DRIVER_NAME,
1090 .desc = DRIVER_DESC,
1091 .date = DRIVER_DATE,
1092 .major = DRIVER_MAJOR,
1093 .minor = DRIVER_MINOR,
1094 .patchlevel = DRIVER_PATCHLEVEL,
1095};
1096
1097int tegra_drm_register_client(struct tegra_drm *tegra,
1098 struct tegra_drm_client *client)
1099{
1100 mutex_lock(&tegra->clients_lock);
1101 list_add_tail(&client->list, &tegra->clients);
1102 mutex_unlock(&tegra->clients_lock);
1103
1104 return 0;
1105}
1106
1107int tegra_drm_unregister_client(struct tegra_drm *tegra,
1108 struct tegra_drm_client *client)
1109{
1110 mutex_lock(&tegra->clients_lock);
1111 list_del_init(&client->list);
1112 mutex_unlock(&tegra->clients_lock);
1113
1114 return 0;
1115}
1116
1117void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *dma)
1118{
1119 struct iova *alloc;
1120 void *virt;
1121 gfp_t gfp;
1122 int err;
1123
1124 if (tegra->domain)
1125 size = iova_align(&tegra->carveout.domain, size);
1126 else
1127 size = PAGE_ALIGN(size);
1128
1129 gfp = GFP_KERNEL | __GFP_ZERO;
1130 if (!tegra->domain) {
1131 /*
1132 * Many units only support 32-bit addresses, even on 64-bit
1133 * SoCs. If there is no IOMMU to translate into a 32-bit IO
1134 * virtual address space, force allocations to be in the
1135 * lower 32-bit range.
1136 */
1137 gfp |= GFP_DMA;
1138 }
1139
1140 virt = (void *)__get_free_pages(gfp, get_order(size));
1141 if (!virt)
1142 return ERR_PTR(-ENOMEM);
1143
1144 if (!tegra->domain) {
1145 /*
1146 * If IOMMU is disabled, devices address physical memory
1147 * directly.
1148 */
1149 *dma = virt_to_phys(virt);
1150 return virt;
1151 }
1152
1153 alloc = alloc_iova(&tegra->carveout.domain,
1154 size >> tegra->carveout.shift,
1155 tegra->carveout.limit, true);
1156 if (!alloc) {
1157 err = -EBUSY;
1158 goto free_pages;
1159 }
1160
1161 *dma = iova_dma_addr(&tegra->carveout.domain, alloc);
1162 err = iommu_map(tegra->domain, *dma, virt_to_phys(virt),
1163 size, IOMMU_READ | IOMMU_WRITE);
1164 if (err < 0)
1165 goto free_iova;
1166
1167 return virt;
1168
1169free_iova:
1170 __free_iova(&tegra->carveout.domain, alloc);
1171free_pages:
1172 free_pages((unsigned long)virt, get_order(size));
1173
1174 return ERR_PTR(err);
1175}
1176
1177void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
1178 dma_addr_t dma)
1179{
1180 if (tegra->domain)
1181 size = iova_align(&tegra->carveout.domain, size);
1182 else
1183 size = PAGE_ALIGN(size);
1184
1185 if (tegra->domain) {
1186 iommu_unmap(tegra->domain, dma, size);
1187 free_iova(&tegra->carveout.domain,
1188 iova_pfn(&tegra->carveout.domain, dma));
1189 }
1190
1191 free_pages((unsigned long)virt, get_order(size));
1192}
1193
1194static int host1x_drm_probe(struct host1x_device *dev)
1195{
1196 struct drm_driver *driver = &tegra_drm_driver;
1197 struct drm_device *drm;
1198 int err;
1199
1200 drm = drm_dev_alloc(driver, &dev->dev);
1201 if (IS_ERR(drm))
1202 return PTR_ERR(drm);
1203
1204 dev_set_drvdata(&dev->dev, drm);
1205
1206 err = drm_dev_register(drm, 0);
1207 if (err < 0)
1208 goto unref;
1209
1210 return 0;
1211
1212unref:
1213 drm_dev_unref(drm);
1214 return err;
1215}
1216
1217static int host1x_drm_remove(struct host1x_device *dev)
1218{
1219 struct drm_device *drm = dev_get_drvdata(&dev->dev);
1220
1221 drm_dev_unregister(drm);
1222 drm_dev_unref(drm);
1223
1224 return 0;
1225}
1226
1227#ifdef CONFIG_PM_SLEEP
1228static int host1x_drm_suspend(struct device *dev)
1229{
1230 struct drm_device *drm = dev_get_drvdata(dev);
1231 struct tegra_drm *tegra = drm->dev_private;
1232
1233 drm_kms_helper_poll_disable(drm);
1234 tegra_drm_fb_suspend(drm);
1235
1236 tegra->state = drm_atomic_helper_suspend(drm);
1237 if (IS_ERR(tegra->state)) {
1238 tegra_drm_fb_resume(drm);
1239 drm_kms_helper_poll_enable(drm);
1240 return PTR_ERR(tegra->state);
1241 }
1242
1243 return 0;
1244}
1245
1246static int host1x_drm_resume(struct device *dev)
1247{
1248 struct drm_device *drm = dev_get_drvdata(dev);
1249 struct tegra_drm *tegra = drm->dev_private;
1250
1251 drm_atomic_helper_resume(drm, tegra->state);
1252 tegra_drm_fb_resume(drm);
1253 drm_kms_helper_poll_enable(drm);
1254
1255 return 0;
1256}
1257#endif
1258
1259static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend,
1260 host1x_drm_resume);
1261
1262static const struct of_device_id host1x_drm_subdevs[] = {
1263 { .compatible = "nvidia,tegra20-dc", },
1264 { .compatible = "nvidia,tegra20-hdmi", },
1265 { .compatible = "nvidia,tegra20-gr2d", },
1266 { .compatible = "nvidia,tegra20-gr3d", },
1267 { .compatible = "nvidia,tegra30-dc", },
1268 { .compatible = "nvidia,tegra30-hdmi", },
1269 { .compatible = "nvidia,tegra30-gr2d", },
1270 { .compatible = "nvidia,tegra30-gr3d", },
1271 { .compatible = "nvidia,tegra114-dsi", },
1272 { .compatible = "nvidia,tegra114-hdmi", },
1273 { .compatible = "nvidia,tegra114-gr3d", },
1274 { .compatible = "nvidia,tegra124-dc", },
1275 { .compatible = "nvidia,tegra124-sor", },
1276 { .compatible = "nvidia,tegra124-hdmi", },
1277 { .compatible = "nvidia,tegra124-dsi", },
1278 { .compatible = "nvidia,tegra124-vic", },
1279 { .compatible = "nvidia,tegra132-dsi", },
1280 { .compatible = "nvidia,tegra210-dc", },
1281 { .compatible = "nvidia,tegra210-dsi", },
1282 { .compatible = "nvidia,tegra210-sor", },
1283 { .compatible = "nvidia,tegra210-sor1", },
1284 { .compatible = "nvidia,tegra210-vic", },
1285 { .compatible = "nvidia,tegra186-display", },
1286 { .compatible = "nvidia,tegra186-dc", },
1287 { .compatible = "nvidia,tegra186-sor", },
1288 { .compatible = "nvidia,tegra186-sor1", },
1289 { .compatible = "nvidia,tegra186-vic", },
1290 { /* sentinel */ }
1291};
1292
1293static struct host1x_driver host1x_drm_driver = {
1294 .driver = {
1295 .name = "drm",
1296 .pm = &host1x_drm_pm_ops,
1297 },
1298 .probe = host1x_drm_probe,
1299 .remove = host1x_drm_remove,
1300 .subdevs = host1x_drm_subdevs,
1301};
1302
1303static struct platform_driver * const drivers[] = {
1304 &tegra_display_hub_driver,
1305 &tegra_dc_driver,
1306 &tegra_hdmi_driver,
1307 &tegra_dsi_driver,
1308 &tegra_dpaux_driver,
1309 &tegra_sor_driver,
1310 &tegra_gr2d_driver,
1311 &tegra_gr3d_driver,
1312 &tegra_vic_driver,
1313};
1314
1315static int __init host1x_drm_init(void)
1316{
1317 int err;
1318
1319 err = host1x_driver_register(&host1x_drm_driver);
1320 if (err < 0)
1321 return err;
1322
1323 err = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
1324 if (err < 0)
1325 goto unregister_host1x;
1326
1327 return 0;
1328
1329unregister_host1x:
1330 host1x_driver_unregister(&host1x_drm_driver);
1331 return err;
1332}
1333module_init(host1x_drm_init);
1334
1335static void __exit host1x_drm_exit(void)
1336{
1337 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
1338 host1x_driver_unregister(&host1x_drm_driver);
1339}
1340module_exit(host1x_drm_exit);
1341
1342MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
1343MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
1344MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Avionic Design GmbH
4 * Copyright (C) 2012-2016 NVIDIA CORPORATION. All rights reserved.
5 */
6
7#include <linux/bitops.h>
8#include <linux/host1x.h>
9#include <linux/idr.h>
10#include <linux/iommu.h>
11#include <linux/module.h>
12#include <linux/platform_device.h>
13
14#include <drm/drm_atomic.h>
15#include <drm/drm_atomic_helper.h>
16#include <drm/drm_debugfs.h>
17#include <drm/drm_drv.h>
18#include <drm/drm_fourcc.h>
19#include <drm/drm_ioctl.h>
20#include <drm/drm_prime.h>
21#include <drm/drm_vblank.h>
22
23#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
24#include <asm/dma-iommu.h>
25#endif
26
27#include "drm.h"
28#include "gem.h"
29
30#define DRIVER_NAME "tegra"
31#define DRIVER_DESC "NVIDIA Tegra graphics"
32#define DRIVER_DATE "20120330"
33#define DRIVER_MAJOR 0
34#define DRIVER_MINOR 0
35#define DRIVER_PATCHLEVEL 0
36
37#define CARVEOUT_SZ SZ_64M
38#define CDMA_GATHER_FETCHES_MAX_NB 16383
39
40struct tegra_drm_file {
41 struct idr contexts;
42 struct mutex lock;
43};
44
45static int tegra_atomic_check(struct drm_device *drm,
46 struct drm_atomic_state *state)
47{
48 int err;
49
50 err = drm_atomic_helper_check(drm, state);
51 if (err < 0)
52 return err;
53
54 return tegra_display_hub_atomic_check(drm, state);
55}
56
57static const struct drm_mode_config_funcs tegra_drm_mode_config_funcs = {
58 .fb_create = tegra_fb_create,
59#ifdef CONFIG_DRM_FBDEV_EMULATION
60 .output_poll_changed = drm_fb_helper_output_poll_changed,
61#endif
62 .atomic_check = tegra_atomic_check,
63 .atomic_commit = drm_atomic_helper_commit,
64};
65
66static void tegra_atomic_commit_tail(struct drm_atomic_state *old_state)
67{
68 struct drm_device *drm = old_state->dev;
69 struct tegra_drm *tegra = drm->dev_private;
70
71 if (tegra->hub) {
72 drm_atomic_helper_commit_modeset_disables(drm, old_state);
73 tegra_display_hub_atomic_commit(drm, old_state);
74 drm_atomic_helper_commit_planes(drm, old_state, 0);
75 drm_atomic_helper_commit_modeset_enables(drm, old_state);
76 drm_atomic_helper_commit_hw_done(old_state);
77 drm_atomic_helper_wait_for_vblanks(drm, old_state);
78 drm_atomic_helper_cleanup_planes(drm, old_state);
79 } else {
80 drm_atomic_helper_commit_tail_rpm(old_state);
81 }
82}
83
84static const struct drm_mode_config_helper_funcs
85tegra_drm_mode_config_helpers = {
86 .atomic_commit_tail = tegra_atomic_commit_tail,
87};
88
89static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
90{
91 struct host1x_device *device = to_host1x_device(drm->dev);
92 struct tegra_drm *tegra;
93 int err;
94
95 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
96 if (!tegra)
97 return -ENOMEM;
98
99 if (iommu_present(&platform_bus_type)) {
100 tegra->domain = iommu_domain_alloc(&platform_bus_type);
101 if (!tegra->domain) {
102 err = -ENOMEM;
103 goto free;
104 }
105
106 err = iova_cache_get();
107 if (err < 0)
108 goto domain;
109 }
110
111 mutex_init(&tegra->clients_lock);
112 INIT_LIST_HEAD(&tegra->clients);
113
114 drm->dev_private = tegra;
115 tegra->drm = drm;
116
117 drm_mode_config_init(drm);
118
119 drm->mode_config.min_width = 0;
120 drm->mode_config.min_height = 0;
121
122 drm->mode_config.max_width = 4096;
123 drm->mode_config.max_height = 4096;
124
125 drm->mode_config.allow_fb_modifiers = true;
126
127 drm->mode_config.normalize_zpos = true;
128
129 drm->mode_config.funcs = &tegra_drm_mode_config_funcs;
130 drm->mode_config.helper_private = &tegra_drm_mode_config_helpers;
131
132 err = tegra_drm_fb_prepare(drm);
133 if (err < 0)
134 goto config;
135
136 drm_kms_helper_poll_init(drm);
137
138 err = host1x_device_init(device);
139 if (err < 0)
140 goto fbdev;
141
142 if (tegra->domain) {
143 u64 carveout_start, carveout_end, gem_start, gem_end;
144 u64 dma_mask = dma_get_mask(&device->dev);
145 dma_addr_t start, end;
146 unsigned long order;
147
148 start = tegra->domain->geometry.aperture_start & dma_mask;
149 end = tegra->domain->geometry.aperture_end & dma_mask;
150
151 gem_start = start;
152 gem_end = end - CARVEOUT_SZ;
153 carveout_start = gem_end + 1;
154 carveout_end = end;
155
156 order = __ffs(tegra->domain->pgsize_bitmap);
157 init_iova_domain(&tegra->carveout.domain, 1UL << order,
158 carveout_start >> order);
159
160 tegra->carveout.shift = iova_shift(&tegra->carveout.domain);
161 tegra->carveout.limit = carveout_end >> tegra->carveout.shift;
162
163 drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1);
164 mutex_init(&tegra->mm_lock);
165
166 DRM_DEBUG("IOMMU apertures:\n");
167 DRM_DEBUG(" GEM: %#llx-%#llx\n", gem_start, gem_end);
168 DRM_DEBUG(" Carveout: %#llx-%#llx\n", carveout_start,
169 carveout_end);
170 }
171
172 if (tegra->hub) {
173 err = tegra_display_hub_prepare(tegra->hub);
174 if (err < 0)
175 goto device;
176 }
177
178 /*
179 * We don't use the drm_irq_install() helpers provided by the DRM
180 * core, so we need to set this manually in order to allow the
181 * DRM_IOCTL_WAIT_VBLANK to operate correctly.
182 */
183 drm->irq_enabled = true;
184
185 /* syncpoints are used for full 32-bit hardware VBLANK counters */
186 drm->max_vblank_count = 0xffffffff;
187
188 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
189 if (err < 0)
190 goto hub;
191
192 drm_mode_config_reset(drm);
193
194 err = tegra_drm_fb_init(drm);
195 if (err < 0)
196 goto hub;
197
198 return 0;
199
200hub:
201 if (tegra->hub)
202 tegra_display_hub_cleanup(tegra->hub);
203device:
204 host1x_device_exit(device);
205fbdev:
206 drm_kms_helper_poll_fini(drm);
207 tegra_drm_fb_free(drm);
208config:
209 drm_mode_config_cleanup(drm);
210
211 if (tegra->domain) {
212 mutex_destroy(&tegra->mm_lock);
213 drm_mm_takedown(&tegra->mm);
214 put_iova_domain(&tegra->carveout.domain);
215 iova_cache_put();
216 }
217domain:
218 if (tegra->domain)
219 iommu_domain_free(tegra->domain);
220free:
221 kfree(tegra);
222 return err;
223}
224
225static void tegra_drm_unload(struct drm_device *drm)
226{
227 struct host1x_device *device = to_host1x_device(drm->dev);
228 struct tegra_drm *tegra = drm->dev_private;
229 int err;
230
231 drm_kms_helper_poll_fini(drm);
232 tegra_drm_fb_exit(drm);
233 drm_atomic_helper_shutdown(drm);
234 drm_mode_config_cleanup(drm);
235
236 err = host1x_device_exit(device);
237 if (err < 0)
238 return;
239
240 if (tegra->domain) {
241 mutex_destroy(&tegra->mm_lock);
242 drm_mm_takedown(&tegra->mm);
243 put_iova_domain(&tegra->carveout.domain);
244 iova_cache_put();
245 iommu_domain_free(tegra->domain);
246 }
247
248 kfree(tegra);
249}
250
251static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
252{
253 struct tegra_drm_file *fpriv;
254
255 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
256 if (!fpriv)
257 return -ENOMEM;
258
259 idr_init(&fpriv->contexts);
260 mutex_init(&fpriv->lock);
261 filp->driver_priv = fpriv;
262
263 return 0;
264}
265
266static void tegra_drm_context_free(struct tegra_drm_context *context)
267{
268 context->client->ops->close_channel(context);
269 kfree(context);
270}
271
272static struct host1x_bo *
273host1x_bo_lookup(struct drm_file *file, u32 handle)
274{
275 struct drm_gem_object *gem;
276 struct tegra_bo *bo;
277
278 gem = drm_gem_object_lookup(file, handle);
279 if (!gem)
280 return NULL;
281
282 bo = to_tegra_bo(gem);
283 return &bo->base;
284}
285
286static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
287 struct drm_tegra_reloc __user *src,
288 struct drm_device *drm,
289 struct drm_file *file)
290{
291 u32 cmdbuf, target;
292 int err;
293
294 err = get_user(cmdbuf, &src->cmdbuf.handle);
295 if (err < 0)
296 return err;
297
298 err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset);
299 if (err < 0)
300 return err;
301
302 err = get_user(target, &src->target.handle);
303 if (err < 0)
304 return err;
305
306 err = get_user(dest->target.offset, &src->target.offset);
307 if (err < 0)
308 return err;
309
310 err = get_user(dest->shift, &src->shift);
311 if (err < 0)
312 return err;
313
314 dest->cmdbuf.bo = host1x_bo_lookup(file, cmdbuf);
315 if (!dest->cmdbuf.bo)
316 return -ENOENT;
317
318 dest->target.bo = host1x_bo_lookup(file, target);
319 if (!dest->target.bo)
320 return -ENOENT;
321
322 return 0;
323}
324
325int tegra_drm_submit(struct tegra_drm_context *context,
326 struct drm_tegra_submit *args, struct drm_device *drm,
327 struct drm_file *file)
328{
329 struct host1x_client *client = &context->client->base;
330 unsigned int num_cmdbufs = args->num_cmdbufs;
331 unsigned int num_relocs = args->num_relocs;
332 struct drm_tegra_cmdbuf __user *user_cmdbufs;
333 struct drm_tegra_reloc __user *user_relocs;
334 struct drm_tegra_syncpt __user *user_syncpt;
335 struct drm_tegra_syncpt syncpt;
336 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
337 struct drm_gem_object **refs;
338 struct host1x_syncpt *sp;
339 struct host1x_job *job;
340 unsigned int num_refs;
341 int err;
342
343 user_cmdbufs = u64_to_user_ptr(args->cmdbufs);
344 user_relocs = u64_to_user_ptr(args->relocs);
345 user_syncpt = u64_to_user_ptr(args->syncpts);
346
347 /* We don't yet support other than one syncpt_incr struct per submit */
348 if (args->num_syncpts != 1)
349 return -EINVAL;
350
351 /* We don't yet support waitchks */
352 if (args->num_waitchks != 0)
353 return -EINVAL;
354
355 job = host1x_job_alloc(context->channel, args->num_cmdbufs,
356 args->num_relocs);
357 if (!job)
358 return -ENOMEM;
359
360 job->num_relocs = args->num_relocs;
361 job->client = client;
362 job->class = client->class;
363 job->serialize = true;
364
365 /*
366 * Track referenced BOs so that they can be unreferenced after the
367 * submission is complete.
368 */
369 num_refs = num_cmdbufs + num_relocs * 2;
370
371 refs = kmalloc_array(num_refs, sizeof(*refs), GFP_KERNEL);
372 if (!refs) {
373 err = -ENOMEM;
374 goto put;
375 }
376
377 /* reuse as an iterator later */
378 num_refs = 0;
379
380 while (num_cmdbufs) {
381 struct drm_tegra_cmdbuf cmdbuf;
382 struct host1x_bo *bo;
383 struct tegra_bo *obj;
384 u64 offset;
385
386 if (copy_from_user(&cmdbuf, user_cmdbufs, sizeof(cmdbuf))) {
387 err = -EFAULT;
388 goto fail;
389 }
390
391 /*
392 * The maximum number of CDMA gather fetches is 16383, a higher
393 * value means the words count is malformed.
394 */
395 if (cmdbuf.words > CDMA_GATHER_FETCHES_MAX_NB) {
396 err = -EINVAL;
397 goto fail;
398 }
399
400 bo = host1x_bo_lookup(file, cmdbuf.handle);
401 if (!bo) {
402 err = -ENOENT;
403 goto fail;
404 }
405
406 offset = (u64)cmdbuf.offset + (u64)cmdbuf.words * sizeof(u32);
407 obj = host1x_to_tegra_bo(bo);
408 refs[num_refs++] = &obj->gem;
409
410 /*
411 * Gather buffer base address must be 4-bytes aligned,
412 * unaligned offset is malformed and cause commands stream
413 * corruption on the buffer address relocation.
414 */
415 if (offset & 3 || offset > obj->gem.size) {
416 err = -EINVAL;
417 goto fail;
418 }
419
420 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
421 num_cmdbufs--;
422 user_cmdbufs++;
423 }
424
425 /* copy and resolve relocations from submit */
426 while (num_relocs--) {
427 struct host1x_reloc *reloc;
428 struct tegra_bo *obj;
429
430 err = host1x_reloc_copy_from_user(&job->relocs[num_relocs],
431 &user_relocs[num_relocs], drm,
432 file);
433 if (err < 0)
434 goto fail;
435
436 reloc = &job->relocs[num_relocs];
437 obj = host1x_to_tegra_bo(reloc->cmdbuf.bo);
438 refs[num_refs++] = &obj->gem;
439
440 /*
441 * The unaligned cmdbuf offset will cause an unaligned write
442 * during of the relocations patching, corrupting the commands
443 * stream.
444 */
445 if (reloc->cmdbuf.offset & 3 ||
446 reloc->cmdbuf.offset >= obj->gem.size) {
447 err = -EINVAL;
448 goto fail;
449 }
450
451 obj = host1x_to_tegra_bo(reloc->target.bo);
452 refs[num_refs++] = &obj->gem;
453
454 if (reloc->target.offset >= obj->gem.size) {
455 err = -EINVAL;
456 goto fail;
457 }
458 }
459
460 if (copy_from_user(&syncpt, user_syncpt, sizeof(syncpt))) {
461 err = -EFAULT;
462 goto fail;
463 }
464
465 /* check whether syncpoint ID is valid */
466 sp = host1x_syncpt_get(host1x, syncpt.id);
467 if (!sp) {
468 err = -ENOENT;
469 goto fail;
470 }
471
472 job->is_addr_reg = context->client->ops->is_addr_reg;
473 job->is_valid_class = context->client->ops->is_valid_class;
474 job->syncpt_incrs = syncpt.incrs;
475 job->syncpt_id = syncpt.id;
476 job->timeout = 10000;
477
478 if (args->timeout && args->timeout < 10000)
479 job->timeout = args->timeout;
480
481 err = host1x_job_pin(job, context->client->base.dev);
482 if (err)
483 goto fail;
484
485 err = host1x_job_submit(job);
486 if (err) {
487 host1x_job_unpin(job);
488 goto fail;
489 }
490
491 args->fence = job->syncpt_end;
492
493fail:
494 while (num_refs--)
495 drm_gem_object_put_unlocked(refs[num_refs]);
496
497 kfree(refs);
498
499put:
500 host1x_job_put(job);
501 return err;
502}
503
504
505#ifdef CONFIG_DRM_TEGRA_STAGING
506static int tegra_gem_create(struct drm_device *drm, void *data,
507 struct drm_file *file)
508{
509 struct drm_tegra_gem_create *args = data;
510 struct tegra_bo *bo;
511
512 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags,
513 &args->handle);
514 if (IS_ERR(bo))
515 return PTR_ERR(bo);
516
517 return 0;
518}
519
520static int tegra_gem_mmap(struct drm_device *drm, void *data,
521 struct drm_file *file)
522{
523 struct drm_tegra_gem_mmap *args = data;
524 struct drm_gem_object *gem;
525 struct tegra_bo *bo;
526
527 gem = drm_gem_object_lookup(file, args->handle);
528 if (!gem)
529 return -EINVAL;
530
531 bo = to_tegra_bo(gem);
532
533 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
534
535 drm_gem_object_put_unlocked(gem);
536
537 return 0;
538}
539
540static int tegra_syncpt_read(struct drm_device *drm, void *data,
541 struct drm_file *file)
542{
543 struct host1x *host = dev_get_drvdata(drm->dev->parent);
544 struct drm_tegra_syncpt_read *args = data;
545 struct host1x_syncpt *sp;
546
547 sp = host1x_syncpt_get(host, args->id);
548 if (!sp)
549 return -EINVAL;
550
551 args->value = host1x_syncpt_read_min(sp);
552 return 0;
553}
554
555static int tegra_syncpt_incr(struct drm_device *drm, void *data,
556 struct drm_file *file)
557{
558 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
559 struct drm_tegra_syncpt_incr *args = data;
560 struct host1x_syncpt *sp;
561
562 sp = host1x_syncpt_get(host1x, args->id);
563 if (!sp)
564 return -EINVAL;
565
566 return host1x_syncpt_incr(sp);
567}
568
569static int tegra_syncpt_wait(struct drm_device *drm, void *data,
570 struct drm_file *file)
571{
572 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
573 struct drm_tegra_syncpt_wait *args = data;
574 struct host1x_syncpt *sp;
575
576 sp = host1x_syncpt_get(host1x, args->id);
577 if (!sp)
578 return -EINVAL;
579
580 return host1x_syncpt_wait(sp, args->thresh,
581 msecs_to_jiffies(args->timeout),
582 &args->value);
583}
584
585static int tegra_client_open(struct tegra_drm_file *fpriv,
586 struct tegra_drm_client *client,
587 struct tegra_drm_context *context)
588{
589 int err;
590
591 err = client->ops->open_channel(client, context);
592 if (err < 0)
593 return err;
594
595 err = idr_alloc(&fpriv->contexts, context, 1, 0, GFP_KERNEL);
596 if (err < 0) {
597 client->ops->close_channel(context);
598 return err;
599 }
600
601 context->client = client;
602 context->id = err;
603
604 return 0;
605}
606
607static int tegra_open_channel(struct drm_device *drm, void *data,
608 struct drm_file *file)
609{
610 struct tegra_drm_file *fpriv = file->driver_priv;
611 struct tegra_drm *tegra = drm->dev_private;
612 struct drm_tegra_open_channel *args = data;
613 struct tegra_drm_context *context;
614 struct tegra_drm_client *client;
615 int err = -ENODEV;
616
617 context = kzalloc(sizeof(*context), GFP_KERNEL);
618 if (!context)
619 return -ENOMEM;
620
621 mutex_lock(&fpriv->lock);
622
623 list_for_each_entry(client, &tegra->clients, list)
624 if (client->base.class == args->client) {
625 err = tegra_client_open(fpriv, client, context);
626 if (err < 0)
627 break;
628
629 args->context = context->id;
630 break;
631 }
632
633 if (err < 0)
634 kfree(context);
635
636 mutex_unlock(&fpriv->lock);
637 return err;
638}
639
640static int tegra_close_channel(struct drm_device *drm, void *data,
641 struct drm_file *file)
642{
643 struct tegra_drm_file *fpriv = file->driver_priv;
644 struct drm_tegra_close_channel *args = data;
645 struct tegra_drm_context *context;
646 int err = 0;
647
648 mutex_lock(&fpriv->lock);
649
650 context = idr_find(&fpriv->contexts, args->context);
651 if (!context) {
652 err = -EINVAL;
653 goto unlock;
654 }
655
656 idr_remove(&fpriv->contexts, context->id);
657 tegra_drm_context_free(context);
658
659unlock:
660 mutex_unlock(&fpriv->lock);
661 return err;
662}
663
664static int tegra_get_syncpt(struct drm_device *drm, void *data,
665 struct drm_file *file)
666{
667 struct tegra_drm_file *fpriv = file->driver_priv;
668 struct drm_tegra_get_syncpt *args = data;
669 struct tegra_drm_context *context;
670 struct host1x_syncpt *syncpt;
671 int err = 0;
672
673 mutex_lock(&fpriv->lock);
674
675 context = idr_find(&fpriv->contexts, args->context);
676 if (!context) {
677 err = -ENODEV;
678 goto unlock;
679 }
680
681 if (args->index >= context->client->base.num_syncpts) {
682 err = -EINVAL;
683 goto unlock;
684 }
685
686 syncpt = context->client->base.syncpts[args->index];
687 args->id = host1x_syncpt_id(syncpt);
688
689unlock:
690 mutex_unlock(&fpriv->lock);
691 return err;
692}
693
694static int tegra_submit(struct drm_device *drm, void *data,
695 struct drm_file *file)
696{
697 struct tegra_drm_file *fpriv = file->driver_priv;
698 struct drm_tegra_submit *args = data;
699 struct tegra_drm_context *context;
700 int err;
701
702 mutex_lock(&fpriv->lock);
703
704 context = idr_find(&fpriv->contexts, args->context);
705 if (!context) {
706 err = -ENODEV;
707 goto unlock;
708 }
709
710 err = context->client->ops->submit(context, args, drm, file);
711
712unlock:
713 mutex_unlock(&fpriv->lock);
714 return err;
715}
716
717static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
718 struct drm_file *file)
719{
720 struct tegra_drm_file *fpriv = file->driver_priv;
721 struct drm_tegra_get_syncpt_base *args = data;
722 struct tegra_drm_context *context;
723 struct host1x_syncpt_base *base;
724 struct host1x_syncpt *syncpt;
725 int err = 0;
726
727 mutex_lock(&fpriv->lock);
728
729 context = idr_find(&fpriv->contexts, args->context);
730 if (!context) {
731 err = -ENODEV;
732 goto unlock;
733 }
734
735 if (args->syncpt >= context->client->base.num_syncpts) {
736 err = -EINVAL;
737 goto unlock;
738 }
739
740 syncpt = context->client->base.syncpts[args->syncpt];
741
742 base = host1x_syncpt_get_base(syncpt);
743 if (!base) {
744 err = -ENXIO;
745 goto unlock;
746 }
747
748 args->id = host1x_syncpt_base_id(base);
749
750unlock:
751 mutex_unlock(&fpriv->lock);
752 return err;
753}
754
755static int tegra_gem_set_tiling(struct drm_device *drm, void *data,
756 struct drm_file *file)
757{
758 struct drm_tegra_gem_set_tiling *args = data;
759 enum tegra_bo_tiling_mode mode;
760 struct drm_gem_object *gem;
761 unsigned long value = 0;
762 struct tegra_bo *bo;
763
764 switch (args->mode) {
765 case DRM_TEGRA_GEM_TILING_MODE_PITCH:
766 mode = TEGRA_BO_TILING_MODE_PITCH;
767
768 if (args->value != 0)
769 return -EINVAL;
770
771 break;
772
773 case DRM_TEGRA_GEM_TILING_MODE_TILED:
774 mode = TEGRA_BO_TILING_MODE_TILED;
775
776 if (args->value != 0)
777 return -EINVAL;
778
779 break;
780
781 case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
782 mode = TEGRA_BO_TILING_MODE_BLOCK;
783
784 if (args->value > 5)
785 return -EINVAL;
786
787 value = args->value;
788 break;
789
790 default:
791 return -EINVAL;
792 }
793
794 gem = drm_gem_object_lookup(file, args->handle);
795 if (!gem)
796 return -ENOENT;
797
798 bo = to_tegra_bo(gem);
799
800 bo->tiling.mode = mode;
801 bo->tiling.value = value;
802
803 drm_gem_object_put_unlocked(gem);
804
805 return 0;
806}
807
808static int tegra_gem_get_tiling(struct drm_device *drm, void *data,
809 struct drm_file *file)
810{
811 struct drm_tegra_gem_get_tiling *args = data;
812 struct drm_gem_object *gem;
813 struct tegra_bo *bo;
814 int err = 0;
815
816 gem = drm_gem_object_lookup(file, args->handle);
817 if (!gem)
818 return -ENOENT;
819
820 bo = to_tegra_bo(gem);
821
822 switch (bo->tiling.mode) {
823 case TEGRA_BO_TILING_MODE_PITCH:
824 args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
825 args->value = 0;
826 break;
827
828 case TEGRA_BO_TILING_MODE_TILED:
829 args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
830 args->value = 0;
831 break;
832
833 case TEGRA_BO_TILING_MODE_BLOCK:
834 args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
835 args->value = bo->tiling.value;
836 break;
837
838 default:
839 err = -EINVAL;
840 break;
841 }
842
843 drm_gem_object_put_unlocked(gem);
844
845 return err;
846}
847
848static int tegra_gem_set_flags(struct drm_device *drm, void *data,
849 struct drm_file *file)
850{
851 struct drm_tegra_gem_set_flags *args = data;
852 struct drm_gem_object *gem;
853 struct tegra_bo *bo;
854
855 if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
856 return -EINVAL;
857
858 gem = drm_gem_object_lookup(file, args->handle);
859 if (!gem)
860 return -ENOENT;
861
862 bo = to_tegra_bo(gem);
863 bo->flags = 0;
864
865 if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
866 bo->flags |= TEGRA_BO_BOTTOM_UP;
867
868 drm_gem_object_put_unlocked(gem);
869
870 return 0;
871}
872
873static int tegra_gem_get_flags(struct drm_device *drm, void *data,
874 struct drm_file *file)
875{
876 struct drm_tegra_gem_get_flags *args = data;
877 struct drm_gem_object *gem;
878 struct tegra_bo *bo;
879
880 gem = drm_gem_object_lookup(file, args->handle);
881 if (!gem)
882 return -ENOENT;
883
884 bo = to_tegra_bo(gem);
885 args->flags = 0;
886
887 if (bo->flags & TEGRA_BO_BOTTOM_UP)
888 args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
889
890 drm_gem_object_put_unlocked(gem);
891
892 return 0;
893}
894#endif
895
896static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
897#ifdef CONFIG_DRM_TEGRA_STAGING
898 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create,
899 DRM_RENDER_ALLOW),
900 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap,
901 DRM_RENDER_ALLOW),
902 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read,
903 DRM_RENDER_ALLOW),
904 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr,
905 DRM_RENDER_ALLOW),
906 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait,
907 DRM_RENDER_ALLOW),
908 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel,
909 DRM_RENDER_ALLOW),
910 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel,
911 DRM_RENDER_ALLOW),
912 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt,
913 DRM_RENDER_ALLOW),
914 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit,
915 DRM_RENDER_ALLOW),
916 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base,
917 DRM_RENDER_ALLOW),
918 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling,
919 DRM_RENDER_ALLOW),
920 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling,
921 DRM_RENDER_ALLOW),
922 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags,
923 DRM_RENDER_ALLOW),
924 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags,
925 DRM_RENDER_ALLOW),
926#endif
927};
928
929static const struct file_operations tegra_drm_fops = {
930 .owner = THIS_MODULE,
931 .open = drm_open,
932 .release = drm_release,
933 .unlocked_ioctl = drm_ioctl,
934 .mmap = tegra_drm_mmap,
935 .poll = drm_poll,
936 .read = drm_read,
937 .compat_ioctl = drm_compat_ioctl,
938 .llseek = noop_llseek,
939};
940
941static int tegra_drm_context_cleanup(int id, void *p, void *data)
942{
943 struct tegra_drm_context *context = p;
944
945 tegra_drm_context_free(context);
946
947 return 0;
948}
949
950static void tegra_drm_postclose(struct drm_device *drm, struct drm_file *file)
951{
952 struct tegra_drm_file *fpriv = file->driver_priv;
953
954 mutex_lock(&fpriv->lock);
955 idr_for_each(&fpriv->contexts, tegra_drm_context_cleanup, NULL);
956 mutex_unlock(&fpriv->lock);
957
958 idr_destroy(&fpriv->contexts);
959 mutex_destroy(&fpriv->lock);
960 kfree(fpriv);
961}
962
963#ifdef CONFIG_DEBUG_FS
964static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
965{
966 struct drm_info_node *node = (struct drm_info_node *)s->private;
967 struct drm_device *drm = node->minor->dev;
968 struct drm_framebuffer *fb;
969
970 mutex_lock(&drm->mode_config.fb_lock);
971
972 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
973 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
974 fb->base.id, fb->width, fb->height,
975 fb->format->depth,
976 fb->format->cpp[0] * 8,
977 drm_framebuffer_read_refcount(fb));
978 }
979
980 mutex_unlock(&drm->mode_config.fb_lock);
981
982 return 0;
983}
984
985static int tegra_debugfs_iova(struct seq_file *s, void *data)
986{
987 struct drm_info_node *node = (struct drm_info_node *)s->private;
988 struct drm_device *drm = node->minor->dev;
989 struct tegra_drm *tegra = drm->dev_private;
990 struct drm_printer p = drm_seq_file_printer(s);
991
992 if (tegra->domain) {
993 mutex_lock(&tegra->mm_lock);
994 drm_mm_print(&tegra->mm, &p);
995 mutex_unlock(&tegra->mm_lock);
996 }
997
998 return 0;
999}
1000
1001static struct drm_info_list tegra_debugfs_list[] = {
1002 { "framebuffers", tegra_debugfs_framebuffers, 0 },
1003 { "iova", tegra_debugfs_iova, 0 },
1004};
1005
1006static int tegra_debugfs_init(struct drm_minor *minor)
1007{
1008 return drm_debugfs_create_files(tegra_debugfs_list,
1009 ARRAY_SIZE(tegra_debugfs_list),
1010 minor->debugfs_root, minor);
1011}
1012#endif
1013
1014static struct drm_driver tegra_drm_driver = {
1015 .driver_features = DRIVER_MODESET | DRIVER_GEM |
1016 DRIVER_ATOMIC | DRIVER_RENDER,
1017 .load = tegra_drm_load,
1018 .unload = tegra_drm_unload,
1019 .open = tegra_drm_open,
1020 .postclose = tegra_drm_postclose,
1021 .lastclose = drm_fb_helper_lastclose,
1022
1023#if defined(CONFIG_DEBUG_FS)
1024 .debugfs_init = tegra_debugfs_init,
1025#endif
1026
1027 .gem_free_object_unlocked = tegra_bo_free_object,
1028 .gem_vm_ops = &tegra_bo_vm_ops,
1029
1030 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1031 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1032 .gem_prime_export = tegra_gem_prime_export,
1033 .gem_prime_import = tegra_gem_prime_import,
1034
1035 .dumb_create = tegra_bo_dumb_create,
1036
1037 .ioctls = tegra_drm_ioctls,
1038 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
1039 .fops = &tegra_drm_fops,
1040
1041 .name = DRIVER_NAME,
1042 .desc = DRIVER_DESC,
1043 .date = DRIVER_DATE,
1044 .major = DRIVER_MAJOR,
1045 .minor = DRIVER_MINOR,
1046 .patchlevel = DRIVER_PATCHLEVEL,
1047};
1048
1049int tegra_drm_register_client(struct tegra_drm *tegra,
1050 struct tegra_drm_client *client)
1051{
1052 mutex_lock(&tegra->clients_lock);
1053 list_add_tail(&client->list, &tegra->clients);
1054 client->drm = tegra;
1055 mutex_unlock(&tegra->clients_lock);
1056
1057 return 0;
1058}
1059
1060int tegra_drm_unregister_client(struct tegra_drm *tegra,
1061 struct tegra_drm_client *client)
1062{
1063 mutex_lock(&tegra->clients_lock);
1064 list_del_init(&client->list);
1065 client->drm = NULL;
1066 mutex_unlock(&tegra->clients_lock);
1067
1068 return 0;
1069}
1070
1071struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client,
1072 bool shared)
1073{
1074 struct drm_device *drm = dev_get_drvdata(client->parent);
1075 struct tegra_drm *tegra = drm->dev_private;
1076 struct iommu_group *group = NULL;
1077 int err;
1078
1079 if (tegra->domain) {
1080 group = iommu_group_get(client->dev);
1081 if (!group) {
1082 dev_err(client->dev, "failed to get IOMMU group\n");
1083 return ERR_PTR(-ENODEV);
1084 }
1085
1086 if (!shared || (shared && (group != tegra->group))) {
1087#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
1088 if (client->dev->archdata.mapping) {
1089 struct dma_iommu_mapping *mapping =
1090 to_dma_iommu_mapping(client->dev);
1091 arm_iommu_detach_device(client->dev);
1092 arm_iommu_release_mapping(mapping);
1093 }
1094#endif
1095 err = iommu_attach_group(tegra->domain, group);
1096 if (err < 0) {
1097 iommu_group_put(group);
1098 return ERR_PTR(err);
1099 }
1100
1101 if (shared && !tegra->group)
1102 tegra->group = group;
1103 }
1104 }
1105
1106 return group;
1107}
1108
1109void host1x_client_iommu_detach(struct host1x_client *client,
1110 struct iommu_group *group)
1111{
1112 struct drm_device *drm = dev_get_drvdata(client->parent);
1113 struct tegra_drm *tegra = drm->dev_private;
1114
1115 if (group) {
1116 if (group == tegra->group) {
1117 iommu_detach_group(tegra->domain, group);
1118 tegra->group = NULL;
1119 }
1120
1121 iommu_group_put(group);
1122 }
1123}
1124
1125void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *dma)
1126{
1127 struct iova *alloc;
1128 void *virt;
1129 gfp_t gfp;
1130 int err;
1131
1132 if (tegra->domain)
1133 size = iova_align(&tegra->carveout.domain, size);
1134 else
1135 size = PAGE_ALIGN(size);
1136
1137 gfp = GFP_KERNEL | __GFP_ZERO;
1138 if (!tegra->domain) {
1139 /*
1140 * Many units only support 32-bit addresses, even on 64-bit
1141 * SoCs. If there is no IOMMU to translate into a 32-bit IO
1142 * virtual address space, force allocations to be in the
1143 * lower 32-bit range.
1144 */
1145 gfp |= GFP_DMA;
1146 }
1147
1148 virt = (void *)__get_free_pages(gfp, get_order(size));
1149 if (!virt)
1150 return ERR_PTR(-ENOMEM);
1151
1152 if (!tegra->domain) {
1153 /*
1154 * If IOMMU is disabled, devices address physical memory
1155 * directly.
1156 */
1157 *dma = virt_to_phys(virt);
1158 return virt;
1159 }
1160
1161 alloc = alloc_iova(&tegra->carveout.domain,
1162 size >> tegra->carveout.shift,
1163 tegra->carveout.limit, true);
1164 if (!alloc) {
1165 err = -EBUSY;
1166 goto free_pages;
1167 }
1168
1169 *dma = iova_dma_addr(&tegra->carveout.domain, alloc);
1170 err = iommu_map(tegra->domain, *dma, virt_to_phys(virt),
1171 size, IOMMU_READ | IOMMU_WRITE);
1172 if (err < 0)
1173 goto free_iova;
1174
1175 return virt;
1176
1177free_iova:
1178 __free_iova(&tegra->carveout.domain, alloc);
1179free_pages:
1180 free_pages((unsigned long)virt, get_order(size));
1181
1182 return ERR_PTR(err);
1183}
1184
1185void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
1186 dma_addr_t dma)
1187{
1188 if (tegra->domain)
1189 size = iova_align(&tegra->carveout.domain, size);
1190 else
1191 size = PAGE_ALIGN(size);
1192
1193 if (tegra->domain) {
1194 iommu_unmap(tegra->domain, dma, size);
1195 free_iova(&tegra->carveout.domain,
1196 iova_pfn(&tegra->carveout.domain, dma));
1197 }
1198
1199 free_pages((unsigned long)virt, get_order(size));
1200}
1201
1202static int host1x_drm_probe(struct host1x_device *dev)
1203{
1204 struct drm_driver *driver = &tegra_drm_driver;
1205 struct drm_device *drm;
1206 int err;
1207
1208 drm = drm_dev_alloc(driver, &dev->dev);
1209 if (IS_ERR(drm))
1210 return PTR_ERR(drm);
1211
1212 dev_set_drvdata(&dev->dev, drm);
1213
1214 err = drm_fb_helper_remove_conflicting_framebuffers(NULL, "tegradrmfb", false);
1215 if (err < 0)
1216 goto put;
1217
1218 err = drm_dev_register(drm, 0);
1219 if (err < 0)
1220 goto put;
1221
1222 return 0;
1223
1224put:
1225 drm_dev_put(drm);
1226 return err;
1227}
1228
1229static int host1x_drm_remove(struct host1x_device *dev)
1230{
1231 struct drm_device *drm = dev_get_drvdata(&dev->dev);
1232
1233 drm_dev_unregister(drm);
1234 drm_dev_put(drm);
1235
1236 return 0;
1237}
1238
1239#ifdef CONFIG_PM_SLEEP
1240static int host1x_drm_suspend(struct device *dev)
1241{
1242 struct drm_device *drm = dev_get_drvdata(dev);
1243
1244 return drm_mode_config_helper_suspend(drm);
1245}
1246
1247static int host1x_drm_resume(struct device *dev)
1248{
1249 struct drm_device *drm = dev_get_drvdata(dev);
1250
1251 return drm_mode_config_helper_resume(drm);
1252}
1253#endif
1254
1255static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend,
1256 host1x_drm_resume);
1257
1258static const struct of_device_id host1x_drm_subdevs[] = {
1259 { .compatible = "nvidia,tegra20-dc", },
1260 { .compatible = "nvidia,tegra20-hdmi", },
1261 { .compatible = "nvidia,tegra20-gr2d", },
1262 { .compatible = "nvidia,tegra20-gr3d", },
1263 { .compatible = "nvidia,tegra30-dc", },
1264 { .compatible = "nvidia,tegra30-hdmi", },
1265 { .compatible = "nvidia,tegra30-gr2d", },
1266 { .compatible = "nvidia,tegra30-gr3d", },
1267 { .compatible = "nvidia,tegra114-dsi", },
1268 { .compatible = "nvidia,tegra114-hdmi", },
1269 { .compatible = "nvidia,tegra114-gr3d", },
1270 { .compatible = "nvidia,tegra124-dc", },
1271 { .compatible = "nvidia,tegra124-sor", },
1272 { .compatible = "nvidia,tegra124-hdmi", },
1273 { .compatible = "nvidia,tegra124-dsi", },
1274 { .compatible = "nvidia,tegra124-vic", },
1275 { .compatible = "nvidia,tegra132-dsi", },
1276 { .compatible = "nvidia,tegra210-dc", },
1277 { .compatible = "nvidia,tegra210-dsi", },
1278 { .compatible = "nvidia,tegra210-sor", },
1279 { .compatible = "nvidia,tegra210-sor1", },
1280 { .compatible = "nvidia,tegra210-vic", },
1281 { .compatible = "nvidia,tegra186-display", },
1282 { .compatible = "nvidia,tegra186-dc", },
1283 { .compatible = "nvidia,tegra186-sor", },
1284 { .compatible = "nvidia,tegra186-sor1", },
1285 { .compatible = "nvidia,tegra186-vic", },
1286 { .compatible = "nvidia,tegra194-display", },
1287 { .compatible = "nvidia,tegra194-dc", },
1288 { .compatible = "nvidia,tegra194-sor", },
1289 { .compatible = "nvidia,tegra194-vic", },
1290 { /* sentinel */ }
1291};
1292
1293static struct host1x_driver host1x_drm_driver = {
1294 .driver = {
1295 .name = "drm",
1296 .pm = &host1x_drm_pm_ops,
1297 },
1298 .probe = host1x_drm_probe,
1299 .remove = host1x_drm_remove,
1300 .subdevs = host1x_drm_subdevs,
1301};
1302
1303static struct platform_driver * const drivers[] = {
1304 &tegra_display_hub_driver,
1305 &tegra_dc_driver,
1306 &tegra_hdmi_driver,
1307 &tegra_dsi_driver,
1308 &tegra_dpaux_driver,
1309 &tegra_sor_driver,
1310 &tegra_gr2d_driver,
1311 &tegra_gr3d_driver,
1312 &tegra_vic_driver,
1313};
1314
1315static int __init host1x_drm_init(void)
1316{
1317 int err;
1318
1319 err = host1x_driver_register(&host1x_drm_driver);
1320 if (err < 0)
1321 return err;
1322
1323 err = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
1324 if (err < 0)
1325 goto unregister_host1x;
1326
1327 return 0;
1328
1329unregister_host1x:
1330 host1x_driver_unregister(&host1x_drm_driver);
1331 return err;
1332}
1333module_init(host1x_drm_init);
1334
1335static void __exit host1x_drm_exit(void)
1336{
1337 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
1338 host1x_driver_unregister(&host1x_drm_driver);
1339}
1340module_exit(host1x_drm_exit);
1341
1342MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
1343MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
1344MODULE_LICENSE("GPL v2");