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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/*
2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2013 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/host1x.h>
11
12#include "drm.h"
13#include "gem.h"
14
15#define DRIVER_NAME "tegra"
16#define DRIVER_DESC "NVIDIA Tegra graphics"
17#define DRIVER_DATE "20120330"
18#define DRIVER_MAJOR 0
19#define DRIVER_MINOR 0
20#define DRIVER_PATCHLEVEL 0
21
22struct tegra_drm_file {
23 struct list_head contexts;
24};
25
26static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
27{
28 struct host1x_device *device = to_host1x_device(drm->dev);
29 struct tegra_drm *tegra;
30 int err;
31
32 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
33 if (!tegra)
34 return -ENOMEM;
35
36 dev_set_drvdata(drm->dev, tegra);
37 mutex_init(&tegra->clients_lock);
38 INIT_LIST_HEAD(&tegra->clients);
39 drm->dev_private = tegra;
40 tegra->drm = drm;
41
42 drm_mode_config_init(drm);
43
44 err = host1x_device_init(device);
45 if (err < 0)
46 return err;
47
48 /*
49 * We don't use the drm_irq_install() helpers provided by the DRM
50 * core, so we need to set this manually in order to allow the
51 * DRM_IOCTL_WAIT_VBLANK to operate correctly.
52 */
53 drm->irq_enabled = true;
54
55 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
56 if (err < 0)
57 return err;
58
59 err = tegra_drm_fb_init(drm);
60 if (err < 0)
61 return err;
62
63 drm_kms_helper_poll_init(drm);
64
65 return 0;
66}
67
68static int tegra_drm_unload(struct drm_device *drm)
69{
70 struct host1x_device *device = to_host1x_device(drm->dev);
71 int err;
72
73 drm_kms_helper_poll_fini(drm);
74 tegra_drm_fb_exit(drm);
75 drm_vblank_cleanup(drm);
76 drm_mode_config_cleanup(drm);
77
78 err = host1x_device_exit(device);
79 if (err < 0)
80 return err;
81
82 return 0;
83}
84
85static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
86{
87 struct tegra_drm_file *fpriv;
88
89 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
90 if (!fpriv)
91 return -ENOMEM;
92
93 INIT_LIST_HEAD(&fpriv->contexts);
94 filp->driver_priv = fpriv;
95
96 return 0;
97}
98
99static void tegra_drm_context_free(struct tegra_drm_context *context)
100{
101 context->client->ops->close_channel(context);
102 kfree(context);
103}
104
105static void tegra_drm_lastclose(struct drm_device *drm)
106{
107#ifdef CONFIG_DRM_TEGRA_FBDEV
108 struct tegra_drm *tegra = drm->dev_private;
109
110 tegra_fbdev_restore_mode(tegra->fbdev);
111#endif
112}
113
114static struct host1x_bo *
115host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle)
116{
117 struct drm_gem_object *gem;
118 struct tegra_bo *bo;
119
120 gem = drm_gem_object_lookup(drm, file, handle);
121 if (!gem)
122 return NULL;
123
124 mutex_lock(&drm->struct_mutex);
125 drm_gem_object_unreference(gem);
126 mutex_unlock(&drm->struct_mutex);
127
128 bo = to_tegra_bo(gem);
129 return &bo->base;
130}
131
132int tegra_drm_submit(struct tegra_drm_context *context,
133 struct drm_tegra_submit *args, struct drm_device *drm,
134 struct drm_file *file)
135{
136 unsigned int num_cmdbufs = args->num_cmdbufs;
137 unsigned int num_relocs = args->num_relocs;
138 unsigned int num_waitchks = args->num_waitchks;
139 struct drm_tegra_cmdbuf __user *cmdbufs =
140 (void __user *)(uintptr_t)args->cmdbufs;
141 struct drm_tegra_reloc __user *relocs =
142 (void __user *)(uintptr_t)args->relocs;
143 struct drm_tegra_waitchk __user *waitchks =
144 (void __user *)(uintptr_t)args->waitchks;
145 struct drm_tegra_syncpt syncpt;
146 struct host1x_job *job;
147 int err;
148
149 /* We don't yet support other than one syncpt_incr struct per submit */
150 if (args->num_syncpts != 1)
151 return -EINVAL;
152
153 job = host1x_job_alloc(context->channel, args->num_cmdbufs,
154 args->num_relocs, args->num_waitchks);
155 if (!job)
156 return -ENOMEM;
157
158 job->num_relocs = args->num_relocs;
159 job->num_waitchk = args->num_waitchks;
160 job->client = (u32)args->context;
161 job->class = context->client->base.class;
162 job->serialize = true;
163
164 while (num_cmdbufs) {
165 struct drm_tegra_cmdbuf cmdbuf;
166 struct host1x_bo *bo;
167
168 if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) {
169 err = -EFAULT;
170 goto fail;
171 }
172
173 bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
174 if (!bo) {
175 err = -ENOENT;
176 goto fail;
177 }
178
179 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
180 num_cmdbufs--;
181 cmdbufs++;
182 }
183
184 if (copy_from_user(job->relocarray, relocs,
185 sizeof(*relocs) * num_relocs)) {
186 err = -EFAULT;
187 goto fail;
188 }
189
190 while (num_relocs--) {
191 struct host1x_reloc *reloc = &job->relocarray[num_relocs];
192 struct host1x_bo *cmdbuf, *target;
193
194 cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);
195 target = host1x_bo_lookup(drm, file, (u32)reloc->target);
196
197 reloc->cmdbuf = cmdbuf;
198 reloc->target = target;
199
200 if (!reloc->target || !reloc->cmdbuf) {
201 err = -ENOENT;
202 goto fail;
203 }
204 }
205
206 if (copy_from_user(job->waitchk, waitchks,
207 sizeof(*waitchks) * num_waitchks)) {
208 err = -EFAULT;
209 goto fail;
210 }
211
212 if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts,
213 sizeof(syncpt))) {
214 err = -EFAULT;
215 goto fail;
216 }
217
218 job->is_addr_reg = context->client->ops->is_addr_reg;
219 job->syncpt_incrs = syncpt.incrs;
220 job->syncpt_id = syncpt.id;
221 job->timeout = 10000;
222
223 if (args->timeout && args->timeout < 10000)
224 job->timeout = args->timeout;
225
226 err = host1x_job_pin(job, context->client->base.dev);
227 if (err)
228 goto fail;
229
230 err = host1x_job_submit(job);
231 if (err)
232 goto fail_submit;
233
234 args->fence = job->syncpt_end;
235
236 host1x_job_put(job);
237 return 0;
238
239fail_submit:
240 host1x_job_unpin(job);
241fail:
242 host1x_job_put(job);
243 return err;
244}
245
246
247#ifdef CONFIG_DRM_TEGRA_STAGING
248static struct tegra_drm_context *tegra_drm_get_context(__u64 context)
249{
250 return (struct tegra_drm_context *)(uintptr_t)context;
251}
252
253static bool tegra_drm_file_owns_context(struct tegra_drm_file *file,
254 struct tegra_drm_context *context)
255{
256 struct tegra_drm_context *ctx;
257
258 list_for_each_entry(ctx, &file->contexts, list)
259 if (ctx == context)
260 return true;
261
262 return false;
263}
264
265static int tegra_gem_create(struct drm_device *drm, void *data,
266 struct drm_file *file)
267{
268 struct drm_tegra_gem_create *args = data;
269 struct tegra_bo *bo;
270
271 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags,
272 &args->handle);
273 if (IS_ERR(bo))
274 return PTR_ERR(bo);
275
276 return 0;
277}
278
279static int tegra_gem_mmap(struct drm_device *drm, void *data,
280 struct drm_file *file)
281{
282 struct drm_tegra_gem_mmap *args = data;
283 struct drm_gem_object *gem;
284 struct tegra_bo *bo;
285
286 gem = drm_gem_object_lookup(drm, file, args->handle);
287 if (!gem)
288 return -EINVAL;
289
290 bo = to_tegra_bo(gem);
291
292 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
293
294 drm_gem_object_unreference(gem);
295
296 return 0;
297}
298
299static int tegra_syncpt_read(struct drm_device *drm, void *data,
300 struct drm_file *file)
301{
302 struct host1x *host = dev_get_drvdata(drm->dev->parent);
303 struct drm_tegra_syncpt_read *args = data;
304 struct host1x_syncpt *sp;
305
306 sp = host1x_syncpt_get(host, args->id);
307 if (!sp)
308 return -EINVAL;
309
310 args->value = host1x_syncpt_read_min(sp);
311 return 0;
312}
313
314static int tegra_syncpt_incr(struct drm_device *drm, void *data,
315 struct drm_file *file)
316{
317 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
318 struct drm_tegra_syncpt_incr *args = data;
319 struct host1x_syncpt *sp;
320
321 sp = host1x_syncpt_get(host1x, args->id);
322 if (!sp)
323 return -EINVAL;
324
325 return host1x_syncpt_incr(sp);
326}
327
328static int tegra_syncpt_wait(struct drm_device *drm, void *data,
329 struct drm_file *file)
330{
331 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
332 struct drm_tegra_syncpt_wait *args = data;
333 struct host1x_syncpt *sp;
334
335 sp = host1x_syncpt_get(host1x, args->id);
336 if (!sp)
337 return -EINVAL;
338
339 return host1x_syncpt_wait(sp, args->thresh, args->timeout,
340 &args->value);
341}
342
343static int tegra_open_channel(struct drm_device *drm, void *data,
344 struct drm_file *file)
345{
346 struct tegra_drm_file *fpriv = file->driver_priv;
347 struct tegra_drm *tegra = drm->dev_private;
348 struct drm_tegra_open_channel *args = data;
349 struct tegra_drm_context *context;
350 struct tegra_drm_client *client;
351 int err = -ENODEV;
352
353 context = kzalloc(sizeof(*context), GFP_KERNEL);
354 if (!context)
355 return -ENOMEM;
356
357 list_for_each_entry(client, &tegra->clients, list)
358 if (client->base.class == args->client) {
359 err = client->ops->open_channel(client, context);
360 if (err)
361 break;
362
363 list_add(&context->list, &fpriv->contexts);
364 args->context = (uintptr_t)context;
365 context->client = client;
366 return 0;
367 }
368
369 kfree(context);
370 return err;
371}
372
373static int tegra_close_channel(struct drm_device *drm, void *data,
374 struct drm_file *file)
375{
376 struct tegra_drm_file *fpriv = file->driver_priv;
377 struct drm_tegra_close_channel *args = data;
378 struct tegra_drm_context *context;
379
380 context = tegra_drm_get_context(args->context);
381
382 if (!tegra_drm_file_owns_context(fpriv, context))
383 return -EINVAL;
384
385 list_del(&context->list);
386 tegra_drm_context_free(context);
387
388 return 0;
389}
390
391static int tegra_get_syncpt(struct drm_device *drm, void *data,
392 struct drm_file *file)
393{
394 struct tegra_drm_file *fpriv = file->driver_priv;
395 struct drm_tegra_get_syncpt *args = data;
396 struct tegra_drm_context *context;
397 struct host1x_syncpt *syncpt;
398
399 context = tegra_drm_get_context(args->context);
400
401 if (!tegra_drm_file_owns_context(fpriv, context))
402 return -ENODEV;
403
404 if (args->index >= context->client->base.num_syncpts)
405 return -EINVAL;
406
407 syncpt = context->client->base.syncpts[args->index];
408 args->id = host1x_syncpt_id(syncpt);
409
410 return 0;
411}
412
413static int tegra_submit(struct drm_device *drm, void *data,
414 struct drm_file *file)
415{
416 struct tegra_drm_file *fpriv = file->driver_priv;
417 struct drm_tegra_submit *args = data;
418 struct tegra_drm_context *context;
419
420 context = tegra_drm_get_context(args->context);
421
422 if (!tegra_drm_file_owns_context(fpriv, context))
423 return -ENODEV;
424
425 return context->client->ops->submit(context, args, drm, file);
426}
427
428static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
429 struct drm_file *file)
430{
431 struct tegra_drm_file *fpriv = file->driver_priv;
432 struct drm_tegra_get_syncpt_base *args = data;
433 struct tegra_drm_context *context;
434 struct host1x_syncpt_base *base;
435 struct host1x_syncpt *syncpt;
436
437 context = tegra_drm_get_context(args->context);
438
439 if (!tegra_drm_file_owns_context(fpriv, context))
440 return -ENODEV;
441
442 if (args->syncpt >= context->client->base.num_syncpts)
443 return -EINVAL;
444
445 syncpt = context->client->base.syncpts[args->syncpt];
446
447 base = host1x_syncpt_get_base(syncpt);
448 if (!base)
449 return -ENXIO;
450
451 args->id = host1x_syncpt_base_id(base);
452
453 return 0;
454}
455#endif
456
457static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
458#ifdef CONFIG_DRM_TEGRA_STAGING
459 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED | DRM_AUTH),
460 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED),
461 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED),
462 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED),
463 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED),
464 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED),
465 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED),
466 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED),
467 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED),
468 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED),
469#endif
470};
471
472static const struct file_operations tegra_drm_fops = {
473 .owner = THIS_MODULE,
474 .open = drm_open,
475 .release = drm_release,
476 .unlocked_ioctl = drm_ioctl,
477 .mmap = tegra_drm_mmap,
478 .poll = drm_poll,
479 .read = drm_read,
480#ifdef CONFIG_COMPAT
481 .compat_ioctl = drm_compat_ioctl,
482#endif
483 .llseek = noop_llseek,
484};
485
486static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe)
487{
488 struct drm_crtc *crtc;
489
490 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
491 struct tegra_dc *dc = to_tegra_dc(crtc);
492
493 if (dc->pipe == pipe)
494 return crtc;
495 }
496
497 return NULL;
498}
499
500static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc)
501{
502 /* TODO: implement real hardware counter using syncpoints */
503 return drm_vblank_count(dev, crtc);
504}
505
506static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
507{
508 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
509 struct tegra_dc *dc = to_tegra_dc(crtc);
510
511 if (!crtc)
512 return -ENODEV;
513
514 tegra_dc_enable_vblank(dc);
515
516 return 0;
517}
518
519static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
520{
521 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
522 struct tegra_dc *dc = to_tegra_dc(crtc);
523
524 if (crtc)
525 tegra_dc_disable_vblank(dc);
526}
527
528static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
529{
530 struct tegra_drm_file *fpriv = file->driver_priv;
531 struct tegra_drm_context *context, *tmp;
532 struct drm_crtc *crtc;
533
534 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
535 tegra_dc_cancel_page_flip(crtc, file);
536
537 list_for_each_entry_safe(context, tmp, &fpriv->contexts, list)
538 tegra_drm_context_free(context);
539
540 kfree(fpriv);
541}
542
543#ifdef CONFIG_DEBUG_FS
544static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
545{
546 struct drm_info_node *node = (struct drm_info_node *)s->private;
547 struct drm_device *drm = node->minor->dev;
548 struct drm_framebuffer *fb;
549
550 mutex_lock(&drm->mode_config.fb_lock);
551
552 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
553 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
554 fb->base.id, fb->width, fb->height, fb->depth,
555 fb->bits_per_pixel,
556 atomic_read(&fb->refcount.refcount));
557 }
558
559 mutex_unlock(&drm->mode_config.fb_lock);
560
561 return 0;
562}
563
564static struct drm_info_list tegra_debugfs_list[] = {
565 { "framebuffers", tegra_debugfs_framebuffers, 0 },
566};
567
568static int tegra_debugfs_init(struct drm_minor *minor)
569{
570 return drm_debugfs_create_files(tegra_debugfs_list,
571 ARRAY_SIZE(tegra_debugfs_list),
572 minor->debugfs_root, minor);
573}
574
575static void tegra_debugfs_cleanup(struct drm_minor *minor)
576{
577 drm_debugfs_remove_files(tegra_debugfs_list,
578 ARRAY_SIZE(tegra_debugfs_list), minor);
579}
580#endif
581
582static struct drm_driver tegra_drm_driver = {
583 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
584 .load = tegra_drm_load,
585 .unload = tegra_drm_unload,
586 .open = tegra_drm_open,
587 .preclose = tegra_drm_preclose,
588 .lastclose = tegra_drm_lastclose,
589
590 .get_vblank_counter = tegra_drm_get_vblank_counter,
591 .enable_vblank = tegra_drm_enable_vblank,
592 .disable_vblank = tegra_drm_disable_vblank,
593
594#if defined(CONFIG_DEBUG_FS)
595 .debugfs_init = tegra_debugfs_init,
596 .debugfs_cleanup = tegra_debugfs_cleanup,
597#endif
598
599 .gem_free_object = tegra_bo_free_object,
600 .gem_vm_ops = &tegra_bo_vm_ops,
601
602 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
603 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
604 .gem_prime_export = tegra_gem_prime_export,
605 .gem_prime_import = tegra_gem_prime_import,
606
607 .dumb_create = tegra_bo_dumb_create,
608 .dumb_map_offset = tegra_bo_dumb_map_offset,
609 .dumb_destroy = drm_gem_dumb_destroy,
610
611 .ioctls = tegra_drm_ioctls,
612 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
613 .fops = &tegra_drm_fops,
614
615 .name = DRIVER_NAME,
616 .desc = DRIVER_DESC,
617 .date = DRIVER_DATE,
618 .major = DRIVER_MAJOR,
619 .minor = DRIVER_MINOR,
620 .patchlevel = DRIVER_PATCHLEVEL,
621};
622
623int tegra_drm_register_client(struct tegra_drm *tegra,
624 struct tegra_drm_client *client)
625{
626 mutex_lock(&tegra->clients_lock);
627 list_add_tail(&client->list, &tegra->clients);
628 mutex_unlock(&tegra->clients_lock);
629
630 return 0;
631}
632
633int tegra_drm_unregister_client(struct tegra_drm *tegra,
634 struct tegra_drm_client *client)
635{
636 mutex_lock(&tegra->clients_lock);
637 list_del_init(&client->list);
638 mutex_unlock(&tegra->clients_lock);
639
640 return 0;
641}
642
643static int host1x_drm_probe(struct host1x_device *device)
644{
645 return drm_host1x_init(&tegra_drm_driver, device);
646}
647
648static int host1x_drm_remove(struct host1x_device *device)
649{
650 drm_host1x_exit(&tegra_drm_driver, device);
651
652 return 0;
653}
654
655static const struct of_device_id host1x_drm_subdevs[] = {
656 { .compatible = "nvidia,tegra20-dc", },
657 { .compatible = "nvidia,tegra20-hdmi", },
658 { .compatible = "nvidia,tegra20-gr2d", },
659 { .compatible = "nvidia,tegra20-gr3d", },
660 { .compatible = "nvidia,tegra30-dc", },
661 { .compatible = "nvidia,tegra30-hdmi", },
662 { .compatible = "nvidia,tegra30-gr2d", },
663 { .compatible = "nvidia,tegra30-gr3d", },
664 { .compatible = "nvidia,tegra114-dsi", },
665 { .compatible = "nvidia,tegra114-hdmi", },
666 { .compatible = "nvidia,tegra114-gr3d", },
667 { .compatible = "nvidia,tegra124-dc", },
668 { .compatible = "nvidia,tegra124-sor", },
669 { /* sentinel */ }
670};
671
672static struct host1x_driver host1x_drm_driver = {
673 .name = "drm",
674 .probe = host1x_drm_probe,
675 .remove = host1x_drm_remove,
676 .subdevs = host1x_drm_subdevs,
677};
678
679static int __init host1x_drm_init(void)
680{
681 int err;
682
683 err = host1x_driver_register(&host1x_drm_driver);
684 if (err < 0)
685 return err;
686
687 err = platform_driver_register(&tegra_dc_driver);
688 if (err < 0)
689 goto unregister_host1x;
690
691 err = platform_driver_register(&tegra_dsi_driver);
692 if (err < 0)
693 goto unregister_dc;
694
695 err = platform_driver_register(&tegra_sor_driver);
696 if (err < 0)
697 goto unregister_dsi;
698
699 err = platform_driver_register(&tegra_hdmi_driver);
700 if (err < 0)
701 goto unregister_sor;
702
703 err = platform_driver_register(&tegra_dpaux_driver);
704 if (err < 0)
705 goto unregister_hdmi;
706
707 err = platform_driver_register(&tegra_gr2d_driver);
708 if (err < 0)
709 goto unregister_dpaux;
710
711 err = platform_driver_register(&tegra_gr3d_driver);
712 if (err < 0)
713 goto unregister_gr2d;
714
715 return 0;
716
717unregister_gr2d:
718 platform_driver_unregister(&tegra_gr2d_driver);
719unregister_dpaux:
720 platform_driver_unregister(&tegra_dpaux_driver);
721unregister_hdmi:
722 platform_driver_unregister(&tegra_hdmi_driver);
723unregister_sor:
724 platform_driver_unregister(&tegra_sor_driver);
725unregister_dsi:
726 platform_driver_unregister(&tegra_dsi_driver);
727unregister_dc:
728 platform_driver_unregister(&tegra_dc_driver);
729unregister_host1x:
730 host1x_driver_unregister(&host1x_drm_driver);
731 return err;
732}
733module_init(host1x_drm_init);
734
735static void __exit host1x_drm_exit(void)
736{
737 platform_driver_unregister(&tegra_gr3d_driver);
738 platform_driver_unregister(&tegra_gr2d_driver);
739 platform_driver_unregister(&tegra_dpaux_driver);
740 platform_driver_unregister(&tegra_hdmi_driver);
741 platform_driver_unregister(&tegra_sor_driver);
742 platform_driver_unregister(&tegra_dsi_driver);
743 platform_driver_unregister(&tegra_dc_driver);
744 host1x_driver_unregister(&host1x_drm_driver);
745}
746module_exit(host1x_drm_exit);
747
748MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
749MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
750MODULE_LICENSE("GPL v2");