2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
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.
10 #include <linux/host1x.h>
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
22 struct tegra_drm_file {
23 struct list_head contexts;
26 static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
28 struct host1x_device *device = to_host1x_device(drm->dev);
29 struct tegra_drm *tegra;
32 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
36 dev_set_drvdata(drm->dev, tegra);
37 mutex_init(&tegra->clients_lock);
38 INIT_LIST_HEAD(&tegra->clients);
39 drm->dev_private = tegra;
42 drm_mode_config_init(drm);
44 err = host1x_device_init(device);
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.
53 drm->irq_enabled = true;
55 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
59 err = tegra_drm_fb_init(drm);
63 drm_kms_helper_poll_init(drm);
68 static int tegra_drm_unload(struct drm_device *drm)
70 struct host1x_device *device = to_host1x_device(drm->dev);
73 drm_kms_helper_poll_fini(drm);
74 tegra_drm_fb_exit(drm);
75 drm_vblank_cleanup(drm);
76 drm_mode_config_cleanup(drm);
78 err = host1x_device_exit(device);
85 static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
87 struct tegra_drm_file *fpriv;
89 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
93 INIT_LIST_HEAD(&fpriv->contexts);
94 filp->driver_priv = fpriv;
99 static void tegra_drm_context_free(struct tegra_drm_context *context)
101 context->client->ops->close_channel(context);
105 static void tegra_drm_lastclose(struct drm_device *drm)
107 struct tegra_drm *tegra = drm->dev_private;
109 tegra_fbdev_restore_mode(tegra->fbdev);
112 static struct host1x_bo *
113 host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle)
115 struct drm_gem_object *gem;
118 gem = drm_gem_object_lookup(drm, file, handle);
122 mutex_lock(&drm->struct_mutex);
123 drm_gem_object_unreference(gem);
124 mutex_unlock(&drm->struct_mutex);
126 bo = to_tegra_bo(gem);
130 int tegra_drm_submit(struct tegra_drm_context *context,
131 struct drm_tegra_submit *args, struct drm_device *drm,
132 struct drm_file *file)
134 unsigned int num_cmdbufs = args->num_cmdbufs;
135 unsigned int num_relocs = args->num_relocs;
136 unsigned int num_waitchks = args->num_waitchks;
137 struct drm_tegra_cmdbuf __user *cmdbufs =
138 (void * __user)(uintptr_t)args->cmdbufs;
139 struct drm_tegra_reloc __user *relocs =
140 (void * __user)(uintptr_t)args->relocs;
141 struct drm_tegra_waitchk __user *waitchks =
142 (void * __user)(uintptr_t)args->waitchks;
143 struct drm_tegra_syncpt syncpt;
144 struct host1x_job *job;
147 /* We don't yet support other than one syncpt_incr struct per submit */
148 if (args->num_syncpts != 1)
151 job = host1x_job_alloc(context->channel, args->num_cmdbufs,
152 args->num_relocs, args->num_waitchks);
156 job->num_relocs = args->num_relocs;
157 job->num_waitchk = args->num_waitchks;
158 job->client = (u32)args->context;
159 job->class = context->client->base.class;
160 job->serialize = true;
162 while (num_cmdbufs) {
163 struct drm_tegra_cmdbuf cmdbuf;
164 struct host1x_bo *bo;
166 err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));
170 bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
176 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
181 err = copy_from_user(job->relocarray, relocs,
182 sizeof(*relocs) * num_relocs);
186 while (num_relocs--) {
187 struct host1x_reloc *reloc = &job->relocarray[num_relocs];
188 struct host1x_bo *cmdbuf, *target;
190 cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);
191 target = host1x_bo_lookup(drm, file, (u32)reloc->target);
193 reloc->cmdbuf = cmdbuf;
194 reloc->target = target;
196 if (!reloc->target || !reloc->cmdbuf) {
202 err = copy_from_user(job->waitchk, waitchks,
203 sizeof(*waitchks) * num_waitchks);
207 err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts,
212 job->is_addr_reg = context->client->ops->is_addr_reg;
213 job->syncpt_incrs = syncpt.incrs;
214 job->syncpt_id = syncpt.id;
215 job->timeout = 10000;
217 if (args->timeout && args->timeout < 10000)
218 job->timeout = args->timeout;
220 err = host1x_job_pin(job, context->client->base.dev);
224 err = host1x_job_submit(job);
228 args->fence = job->syncpt_end;
234 host1x_job_unpin(job);
241 #ifdef CONFIG_DRM_TEGRA_STAGING
242 static struct tegra_drm_context *tegra_drm_get_context(__u64 context)
244 return (struct tegra_drm_context *)(uintptr_t)context;
247 static bool tegra_drm_file_owns_context(struct tegra_drm_file *file,
248 struct tegra_drm_context *context)
250 struct tegra_drm_context *ctx;
252 list_for_each_entry(ctx, &file->contexts, list)
259 static int tegra_gem_create(struct drm_device *drm, void *data,
260 struct drm_file *file)
262 struct drm_tegra_gem_create *args = data;
265 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags,
273 static int tegra_gem_mmap(struct drm_device *drm, void *data,
274 struct drm_file *file)
276 struct drm_tegra_gem_mmap *args = data;
277 struct drm_gem_object *gem;
280 gem = drm_gem_object_lookup(drm, file, args->handle);
284 bo = to_tegra_bo(gem);
286 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
288 drm_gem_object_unreference(gem);
293 static int tegra_syncpt_read(struct drm_device *drm, void *data,
294 struct drm_file *file)
296 struct host1x *host = dev_get_drvdata(drm->dev->parent);
297 struct drm_tegra_syncpt_read *args = data;
298 struct host1x_syncpt *sp;
300 sp = host1x_syncpt_get(host, args->id);
304 args->value = host1x_syncpt_read_min(sp);
308 static int tegra_syncpt_incr(struct drm_device *drm, void *data,
309 struct drm_file *file)
311 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
312 struct drm_tegra_syncpt_incr *args = data;
313 struct host1x_syncpt *sp;
315 sp = host1x_syncpt_get(host1x, args->id);
319 return host1x_syncpt_incr(sp);
322 static int tegra_syncpt_wait(struct drm_device *drm, void *data,
323 struct drm_file *file)
325 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
326 struct drm_tegra_syncpt_wait *args = data;
327 struct host1x_syncpt *sp;
329 sp = host1x_syncpt_get(host1x, args->id);
333 return host1x_syncpt_wait(sp, args->thresh, args->timeout,
337 static int tegra_open_channel(struct drm_device *drm, void *data,
338 struct drm_file *file)
340 struct tegra_drm_file *fpriv = file->driver_priv;
341 struct tegra_drm *tegra = drm->dev_private;
342 struct drm_tegra_open_channel *args = data;
343 struct tegra_drm_context *context;
344 struct tegra_drm_client *client;
347 context = kzalloc(sizeof(*context), GFP_KERNEL);
351 list_for_each_entry(client, &tegra->clients, list)
352 if (client->base.class == args->client) {
353 err = client->ops->open_channel(client, context);
357 list_add(&context->list, &fpriv->contexts);
358 args->context = (uintptr_t)context;
359 context->client = client;
367 static int tegra_close_channel(struct drm_device *drm, void *data,
368 struct drm_file *file)
370 struct tegra_drm_file *fpriv = file->driver_priv;
371 struct drm_tegra_close_channel *args = data;
372 struct tegra_drm_context *context;
374 context = tegra_drm_get_context(args->context);
376 if (!tegra_drm_file_owns_context(fpriv, context))
379 list_del(&context->list);
380 tegra_drm_context_free(context);
385 static int tegra_get_syncpt(struct drm_device *drm, void *data,
386 struct drm_file *file)
388 struct tegra_drm_file *fpriv = file->driver_priv;
389 struct drm_tegra_get_syncpt *args = data;
390 struct tegra_drm_context *context;
391 struct host1x_syncpt *syncpt;
393 context = tegra_drm_get_context(args->context);
395 if (!tegra_drm_file_owns_context(fpriv, context))
398 if (args->index >= context->client->base.num_syncpts)
401 syncpt = context->client->base.syncpts[args->index];
402 args->id = host1x_syncpt_id(syncpt);
407 static int tegra_submit(struct drm_device *drm, void *data,
408 struct drm_file *file)
410 struct tegra_drm_file *fpriv = file->driver_priv;
411 struct drm_tegra_submit *args = data;
412 struct tegra_drm_context *context;
414 context = tegra_drm_get_context(args->context);
416 if (!tegra_drm_file_owns_context(fpriv, context))
419 return context->client->ops->submit(context, args, drm, file);
423 static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
424 #ifdef CONFIG_DRM_TEGRA_STAGING
425 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED | DRM_AUTH),
426 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED),
427 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED),
428 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED),
429 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED),
430 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED),
431 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED),
432 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED),
433 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED),
437 static const struct file_operations tegra_drm_fops = {
438 .owner = THIS_MODULE,
440 .release = drm_release,
441 .unlocked_ioctl = drm_ioctl,
442 .mmap = tegra_drm_mmap,
446 .compat_ioctl = drm_compat_ioctl,
448 .llseek = noop_llseek,
451 static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe)
453 struct drm_crtc *crtc;
455 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
456 struct tegra_dc *dc = to_tegra_dc(crtc);
458 if (dc->pipe == pipe)
465 static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc)
467 /* TODO: implement real hardware counter using syncpoints */
468 return drm_vblank_count(dev, crtc);
471 static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
473 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
474 struct tegra_dc *dc = to_tegra_dc(crtc);
479 tegra_dc_enable_vblank(dc);
484 static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
486 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
487 struct tegra_dc *dc = to_tegra_dc(crtc);
490 tegra_dc_disable_vblank(dc);
493 static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
495 struct tegra_drm_file *fpriv = file->driver_priv;
496 struct tegra_drm_context *context, *tmp;
497 struct drm_crtc *crtc;
499 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
500 tegra_dc_cancel_page_flip(crtc, file);
502 list_for_each_entry_safe(context, tmp, &fpriv->contexts, list)
503 tegra_drm_context_free(context);
508 #ifdef CONFIG_DEBUG_FS
509 static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
511 struct drm_info_node *node = (struct drm_info_node *)s->private;
512 struct drm_device *drm = node->minor->dev;
513 struct drm_framebuffer *fb;
515 mutex_lock(&drm->mode_config.fb_lock);
517 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
518 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
519 fb->base.id, fb->width, fb->height, fb->depth,
521 atomic_read(&fb->refcount.refcount));
524 mutex_unlock(&drm->mode_config.fb_lock);
529 static struct drm_info_list tegra_debugfs_list[] = {
530 { "framebuffers", tegra_debugfs_framebuffers, 0 },
533 static int tegra_debugfs_init(struct drm_minor *minor)
535 return drm_debugfs_create_files(tegra_debugfs_list,
536 ARRAY_SIZE(tegra_debugfs_list),
537 minor->debugfs_root, minor);
540 static void tegra_debugfs_cleanup(struct drm_minor *minor)
542 drm_debugfs_remove_files(tegra_debugfs_list,
543 ARRAY_SIZE(tegra_debugfs_list), minor);
547 struct drm_driver tegra_drm_driver = {
548 .driver_features = DRIVER_MODESET | DRIVER_GEM,
549 .load = tegra_drm_load,
550 .unload = tegra_drm_unload,
551 .open = tegra_drm_open,
552 .preclose = tegra_drm_preclose,
553 .lastclose = tegra_drm_lastclose,
555 .get_vblank_counter = tegra_drm_get_vblank_counter,
556 .enable_vblank = tegra_drm_enable_vblank,
557 .disable_vblank = tegra_drm_disable_vblank,
559 #if defined(CONFIG_DEBUG_FS)
560 .debugfs_init = tegra_debugfs_init,
561 .debugfs_cleanup = tegra_debugfs_cleanup,
564 .gem_free_object = tegra_bo_free_object,
565 .gem_vm_ops = &tegra_bo_vm_ops,
566 .dumb_create = tegra_bo_dumb_create,
567 .dumb_map_offset = tegra_bo_dumb_map_offset,
568 .dumb_destroy = drm_gem_dumb_destroy,
570 .ioctls = tegra_drm_ioctls,
571 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
572 .fops = &tegra_drm_fops,
577 .major = DRIVER_MAJOR,
578 .minor = DRIVER_MINOR,
579 .patchlevel = DRIVER_PATCHLEVEL,
582 int tegra_drm_register_client(struct tegra_drm *tegra,
583 struct tegra_drm_client *client)
585 mutex_lock(&tegra->clients_lock);
586 list_add_tail(&client->list, &tegra->clients);
587 mutex_unlock(&tegra->clients_lock);
592 int tegra_drm_unregister_client(struct tegra_drm *tegra,
593 struct tegra_drm_client *client)
595 mutex_lock(&tegra->clients_lock);
596 list_del_init(&client->list);
597 mutex_unlock(&tegra->clients_lock);
602 static int host1x_drm_probe(struct host1x_device *device)
604 return drm_host1x_init(&tegra_drm_driver, device);
607 static int host1x_drm_remove(struct host1x_device *device)
609 drm_host1x_exit(&tegra_drm_driver, device);
614 static const struct of_device_id host1x_drm_subdevs[] = {
615 { .compatible = "nvidia,tegra20-dc", },
616 { .compatible = "nvidia,tegra20-hdmi", },
617 { .compatible = "nvidia,tegra20-gr2d", },
618 { .compatible = "nvidia,tegra20-gr3d", },
619 { .compatible = "nvidia,tegra30-dc", },
620 { .compatible = "nvidia,tegra30-hdmi", },
621 { .compatible = "nvidia,tegra30-gr2d", },
622 { .compatible = "nvidia,tegra30-gr3d", },
623 { .compatible = "nvidia,tegra114-dsi", },
624 { .compatible = "nvidia,tegra114-hdmi", },
625 { .compatible = "nvidia,tegra114-gr3d", },
629 static struct host1x_driver host1x_drm_driver = {
631 .probe = host1x_drm_probe,
632 .remove = host1x_drm_remove,
633 .subdevs = host1x_drm_subdevs,
636 static int __init host1x_drm_init(void)
640 err = host1x_driver_register(&host1x_drm_driver);
644 err = platform_driver_register(&tegra_dc_driver);
646 goto unregister_host1x;
648 err = platform_driver_register(&tegra_dsi_driver);
652 err = platform_driver_register(&tegra_hdmi_driver);
656 err = platform_driver_register(&tegra_gr2d_driver);
658 goto unregister_hdmi;
660 err = platform_driver_register(&tegra_gr3d_driver);
662 goto unregister_gr2d;
667 platform_driver_unregister(&tegra_gr2d_driver);
669 platform_driver_unregister(&tegra_hdmi_driver);
671 platform_driver_unregister(&tegra_dsi_driver);
673 platform_driver_unregister(&tegra_dc_driver);
675 host1x_driver_unregister(&host1x_drm_driver);
678 module_init(host1x_drm_init);
680 static void __exit host1x_drm_exit(void)
682 platform_driver_unregister(&tegra_gr3d_driver);
683 platform_driver_unregister(&tegra_gr2d_driver);
684 platform_driver_unregister(&tegra_hdmi_driver);
685 platform_driver_unregister(&tegra_dsi_driver);
686 platform_driver_unregister(&tegra_dc_driver);
687 host1x_driver_unregister(&host1x_drm_driver);
689 module_exit(host1x_drm_exit);
691 MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
692 MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
693 MODULE_LICENSE("GPL v2");