| /* |
| * Copyright (C) 2012 Avionic Design GmbH |
| * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/host1x.h> |
| #include <linux/iommu.h> |
| |
| #include <drm/drm_atomic.h> |
| #include <drm/drm_atomic_helper.h> |
| |
| #include "drm.h" |
| #include "gem.h" |
| |
| #define DRIVER_NAME "tegra" |
| #define DRIVER_DESC "NVIDIA Tegra graphics" |
| #define DRIVER_DATE "20120330" |
| #define DRIVER_MAJOR 0 |
| #define DRIVER_MINOR 0 |
| #define DRIVER_PATCHLEVEL 0 |
| |
| struct tegra_drm_file { |
| struct list_head contexts; |
| }; |
| |
| static void tegra_atomic_schedule(struct tegra_drm *tegra, |
| struct drm_atomic_state *state) |
| { |
| tegra->commit.state = state; |
| schedule_work(&tegra->commit.work); |
| } |
| |
| static void tegra_atomic_complete(struct tegra_drm *tegra, |
| struct drm_atomic_state *state) |
| { |
| struct drm_device *drm = tegra->drm; |
| |
| /* |
| * Everything below can be run asynchronously without the need to grab |
| * any modeset locks at all under one condition: It must be guaranteed |
| * that the asynchronous work has either been cancelled (if the driver |
| * supports it, which at least requires that the framebuffers get |
| * cleaned up with drm_atomic_helper_cleanup_planes()) or completed |
| * before the new state gets committed on the software side with |
| * drm_atomic_helper_swap_state(). |
| * |
| * This scheme allows new atomic state updates to be prepared and |
| * checked in parallel to the asynchronous completion of the previous |
| * update. Which is important since compositors need to figure out the |
| * composition of the next frame right after having submitted the |
| * current layout. |
| */ |
| |
| drm_atomic_helper_commit_modeset_disables(drm, state); |
| drm_atomic_helper_commit_modeset_enables(drm, state); |
| drm_atomic_helper_commit_planes(drm, state, true); |
| |
| drm_atomic_helper_wait_for_vblanks(drm, state); |
| |
| drm_atomic_helper_cleanup_planes(drm, state); |
| drm_atomic_state_free(state); |
| } |
| |
| static void tegra_atomic_work(struct work_struct *work) |
| { |
| struct tegra_drm *tegra = container_of(work, struct tegra_drm, |
| commit.work); |
| |
| tegra_atomic_complete(tegra, tegra->commit.state); |
| } |
| |
| static int tegra_atomic_commit(struct drm_device *drm, |
| struct drm_atomic_state *state, bool nonblock) |
| { |
| struct tegra_drm *tegra = drm->dev_private; |
| int err; |
| |
| err = drm_atomic_helper_prepare_planes(drm, state); |
| if (err) |
| return err; |
| |
| /* serialize outstanding nonblocking commits */ |
| mutex_lock(&tegra->commit.lock); |
| flush_work(&tegra->commit.work); |
| |
| /* |
| * This is the point of no return - everything below never fails except |
| * when the hw goes bonghits. Which means we can commit the new state on |
| * the software side now. |
| */ |
| |
| drm_atomic_helper_swap_state(drm, state); |
| |
| if (nonblock) |
| tegra_atomic_schedule(tegra, state); |
| else |
| tegra_atomic_complete(tegra, state); |
| |
| mutex_unlock(&tegra->commit.lock); |
| return 0; |
| } |
| |
| static const struct drm_mode_config_funcs tegra_drm_mode_funcs = { |
| .fb_create = tegra_fb_create, |
| #ifdef CONFIG_DRM_FBDEV_EMULATION |
| .output_poll_changed = tegra_fb_output_poll_changed, |
| #endif |
| .atomic_check = drm_atomic_helper_check, |
| .atomic_commit = tegra_atomic_commit, |
| }; |
| |
| static int tegra_drm_load(struct drm_device *drm, unsigned long flags) |
| { |
| struct host1x_device *device = to_host1x_device(drm->dev); |
| struct tegra_drm *tegra; |
| int err; |
| |
| tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); |
| if (!tegra) |
| return -ENOMEM; |
| |
| if (iommu_present(&platform_bus_type)) { |
| struct iommu_domain_geometry *geometry; |
| u64 start, end; |
| |
| tegra->domain = iommu_domain_alloc(&platform_bus_type); |
| if (!tegra->domain) { |
| err = -ENOMEM; |
| goto free; |
| } |
| |
| geometry = &tegra->domain->geometry; |
| start = geometry->aperture_start; |
| end = geometry->aperture_end; |
| |
| DRM_DEBUG_DRIVER("IOMMU aperture initialized (%#llx-%#llx)\n", |
| start, end); |
| drm_mm_init(&tegra->mm, start, end - start + 1); |
| } |
| |
| mutex_init(&tegra->clients_lock); |
| INIT_LIST_HEAD(&tegra->clients); |
| |
| mutex_init(&tegra->commit.lock); |
| INIT_WORK(&tegra->commit.work, tegra_atomic_work); |
| |
| drm->dev_private = tegra; |
| tegra->drm = drm; |
| |
| drm_mode_config_init(drm); |
| |
| drm->mode_config.min_width = 0; |
| drm->mode_config.min_height = 0; |
| |
| drm->mode_config.max_width = 4096; |
| drm->mode_config.max_height = 4096; |
| |
| drm->mode_config.funcs = &tegra_drm_mode_funcs; |
| |
| err = tegra_drm_fb_prepare(drm); |
| if (err < 0) |
| goto config; |
| |
| drm_kms_helper_poll_init(drm); |
| |
| err = host1x_device_init(device); |
| if (err < 0) |
| goto fbdev; |
| |
| /* |
| * We don't use the drm_irq_install() helpers provided by the DRM |
| * core, so we need to set this manually in order to allow the |
| * DRM_IOCTL_WAIT_VBLANK to operate correctly. |
| */ |
| drm->irq_enabled = true; |
| |
| /* syncpoints are used for full 32-bit hardware VBLANK counters */ |
| drm->max_vblank_count = 0xffffffff; |
| |
| err = drm_vblank_init(drm, drm->mode_config.num_crtc); |
| if (err < 0) |
| goto device; |
| |
| drm_mode_config_reset(drm); |
| |
| err = tegra_drm_fb_init(drm); |
| if (err < 0) |
| goto vblank; |
| |
| return 0; |
| |
| vblank: |
| drm_vblank_cleanup(drm); |
| device: |
| host1x_device_exit(device); |
| fbdev: |
| drm_kms_helper_poll_fini(drm); |
| tegra_drm_fb_free(drm); |
| config: |
| drm_mode_config_cleanup(drm); |
| |
| if (tegra->domain) { |
| iommu_domain_free(tegra->domain); |
| drm_mm_takedown(&tegra->mm); |
| } |
| free: |
| kfree(tegra); |
| return err; |
| } |
| |
| static int tegra_drm_unload(struct drm_device *drm) |
| { |
| struct host1x_device *device = to_host1x_device(drm->dev); |
| struct tegra_drm *tegra = drm->dev_private; |
| int err; |
| |
| drm_kms_helper_poll_fini(drm); |
| tegra_drm_fb_exit(drm); |
| drm_mode_config_cleanup(drm); |
| drm_vblank_cleanup(drm); |
| |
| err = host1x_device_exit(device); |
| if (err < 0) |
| return err; |
| |
| if (tegra->domain) { |
| iommu_domain_free(tegra->domain); |
| drm_mm_takedown(&tegra->mm); |
| } |
| |
| kfree(tegra); |
| |
| return 0; |
| } |
| |
| static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) |
| { |
| struct tegra_drm_file *fpriv; |
| |
| fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); |
| if (!fpriv) |
| return -ENOMEM; |
| |
| INIT_LIST_HEAD(&fpriv->contexts); |
| filp->driver_priv = fpriv; |
| |
| return 0; |
| } |
| |
| static void tegra_drm_context_free(struct tegra_drm_context *context) |
| { |
| context->client->ops->close_channel(context); |
| kfree(context); |
| } |
| |
| static void tegra_drm_lastclose(struct drm_device *drm) |
| { |
| #ifdef CONFIG_DRM_FBDEV_EMULATION |
| struct tegra_drm *tegra = drm->dev_private; |
| |
| tegra_fbdev_restore_mode(tegra->fbdev); |
| #endif |
| } |
| |
| static struct host1x_bo * |
| host1x_bo_lookup(struct drm_file *file, u32 handle) |
| { |
| struct drm_gem_object *gem; |
| struct tegra_bo *bo; |
| |
| gem = drm_gem_object_lookup(file, handle); |
| if (!gem) |
| return NULL; |
| |
| drm_gem_object_unreference_unlocked(gem); |
| |
| bo = to_tegra_bo(gem); |
| return &bo->base; |
| } |
| |
| static int host1x_reloc_copy_from_user(struct host1x_reloc *dest, |
| struct drm_tegra_reloc __user *src, |
| struct drm_device *drm, |
| struct drm_file *file) |
| { |
| u32 cmdbuf, target; |
| int err; |
| |
| err = get_user(cmdbuf, &src->cmdbuf.handle); |
| if (err < 0) |
| return err; |
| |
| err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset); |
| if (err < 0) |
| return err; |
| |
| err = get_user(target, &src->target.handle); |
| if (err < 0) |
| return err; |
| |
| err = get_user(dest->target.offset, &src->target.offset); |
| if (err < 0) |
| return err; |
| |
| err = get_user(dest->shift, &src->shift); |
| if (err < 0) |
| return err; |
| |
| dest->cmdbuf.bo = host1x_bo_lookup(file, cmdbuf); |
| if (!dest->cmdbuf.bo) |
| return -ENOENT; |
| |
| dest->target.bo = host1x_bo_lookup(file, target); |
| if (!dest->target.bo) |
| return -ENOENT; |
| |
| return 0; |
| } |
| |
| int tegra_drm_submit(struct tegra_drm_context *context, |
| struct drm_tegra_submit *args, struct drm_device *drm, |
| struct drm_file *file) |
| { |
| unsigned int num_cmdbufs = args->num_cmdbufs; |
| unsigned int num_relocs = args->num_relocs; |
| unsigned int num_waitchks = args->num_waitchks; |
| struct drm_tegra_cmdbuf __user *cmdbufs = |
| (void __user *)(uintptr_t)args->cmdbufs; |
| struct drm_tegra_reloc __user *relocs = |
| (void __user *)(uintptr_t)args->relocs; |
| struct drm_tegra_waitchk __user *waitchks = |
| (void __user *)(uintptr_t)args->waitchks; |
| struct drm_tegra_syncpt syncpt; |
| struct host1x_job *job; |
| int err; |
| |
| /* We don't yet support other than one syncpt_incr struct per submit */ |
| if (args->num_syncpts != 1) |
| return -EINVAL; |
| |
| job = host1x_job_alloc(context->channel, args->num_cmdbufs, |
| args->num_relocs, args->num_waitchks); |
| if (!job) |
| return -ENOMEM; |
| |
| job->num_relocs = args->num_relocs; |
| job->num_waitchk = args->num_waitchks; |
| job->client = (u32)args->context; |
| job->class = context->client->base.class; |
| job->serialize = true; |
| |
| while (num_cmdbufs) { |
| struct drm_tegra_cmdbuf cmdbuf; |
| struct host1x_bo *bo; |
| |
| if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) { |
| err = -EFAULT; |
| goto fail; |
| } |
| |
| bo = host1x_bo_lookup(file, cmdbuf.handle); |
| if (!bo) { |
| err = -ENOENT; |
| goto fail; |
| } |
| |
| host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset); |
| num_cmdbufs--; |
| cmdbufs++; |
| } |
| |
| /* copy and resolve relocations from submit */ |
| while (num_relocs--) { |
| err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs], |
| &relocs[num_relocs], drm, |
| file); |
| if (err < 0) |
| goto fail; |
| } |
| |
| if (copy_from_user(job->waitchk, waitchks, |
| sizeof(*waitchks) * num_waitchks)) { |
| err = -EFAULT; |
| goto fail; |
| } |
| |
| if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts, |
| sizeof(syncpt))) { |
| err = -EFAULT; |
| goto fail; |
| } |
| |
| job->is_addr_reg = context->client->ops->is_addr_reg; |
| job->syncpt_incrs = syncpt.incrs; |
| job->syncpt_id = syncpt.id; |
| job->timeout = 10000; |
| |
| if (args->timeout && args->timeout < 10000) |
| job->timeout = args->timeout; |
| |
| err = host1x_job_pin(job, context->client->base.dev); |
| if (err) |
| goto fail; |
| |
| err = host1x_job_submit(job); |
| if (err) |
| goto fail_submit; |
| |
| args->fence = job->syncpt_end; |
| |
| host1x_job_put(job); |
| return 0; |
| |
| fail_submit: |
| host1x_job_unpin(job); |
| fail: |
| host1x_job_put(job); |
| return err; |
| } |
| |
| |
| #ifdef CONFIG_DRM_TEGRA_STAGING |
| static struct tegra_drm_context *tegra_drm_get_context(__u64 context) |
| { |
| return (struct tegra_drm_context *)(uintptr_t)context; |
| } |
| |
| static bool tegra_drm_file_owns_context(struct tegra_drm_file *file, |
| struct tegra_drm_context *context) |
| { |
| struct tegra_drm_context *ctx; |
| |
| list_for_each_entry(ctx, &file->contexts, list) |
| if (ctx == context) |
| return true; |
| |
| return false; |
| } |
| |
| static int tegra_gem_create(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct drm_tegra_gem_create *args = data; |
| struct tegra_bo *bo; |
| |
| bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags, |
| &args->handle); |
| if (IS_ERR(bo)) |
| return PTR_ERR(bo); |
| |
| return 0; |
| } |
| |
| static int tegra_gem_mmap(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct drm_tegra_gem_mmap *args = data; |
| struct drm_gem_object *gem; |
| struct tegra_bo *bo; |
| |
| gem = drm_gem_object_lookup(file, args->handle); |
| if (!gem) |
| return -EINVAL; |
| |
| bo = to_tegra_bo(gem); |
| |
| args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node); |
| |
| drm_gem_object_unreference_unlocked(gem); |
| |
| return 0; |
| } |
| |
| static int tegra_syncpt_read(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct host1x *host = dev_get_drvdata(drm->dev->parent); |
| struct drm_tegra_syncpt_read *args = data; |
| struct host1x_syncpt *sp; |
| |
| sp = host1x_syncpt_get(host, args->id); |
| if (!sp) |
| return -EINVAL; |
| |
| args->value = host1x_syncpt_read_min(sp); |
| return 0; |
| } |
| |
| static int tegra_syncpt_incr(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct host1x *host1x = dev_get_drvdata(drm->dev->parent); |
| struct drm_tegra_syncpt_incr *args = data; |
| struct host1x_syncpt *sp; |
| |
| sp = host1x_syncpt_get(host1x, args->id); |
| if (!sp) |
| return -EINVAL; |
| |
| return host1x_syncpt_incr(sp); |
| } |
| |
| static int tegra_syncpt_wait(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct host1x *host1x = dev_get_drvdata(drm->dev->parent); |
| struct drm_tegra_syncpt_wait *args = data; |
| struct host1x_syncpt *sp; |
| |
| sp = host1x_syncpt_get(host1x, args->id); |
| if (!sp) |
| return -EINVAL; |
| |
| return host1x_syncpt_wait(sp, args->thresh, args->timeout, |
| &args->value); |
| } |
| |
| static int tegra_open_channel(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct tegra_drm_file *fpriv = file->driver_priv; |
| struct tegra_drm *tegra = drm->dev_private; |
| struct drm_tegra_open_channel *args = data; |
| struct tegra_drm_context *context; |
| struct tegra_drm_client *client; |
| int err = -ENODEV; |
| |
| context = kzalloc(sizeof(*context), GFP_KERNEL); |
| if (!context) |
| return -ENOMEM; |
| |
| list_for_each_entry(client, &tegra->clients, list) |
| if (client->base.class == args->client) { |
| err = client->ops->open_channel(client, context); |
| if (err) |
| break; |
| |
| list_add(&context->list, &fpriv->contexts); |
| args->context = (uintptr_t)context; |
| context->client = client; |
| return 0; |
| } |
| |
| kfree(context); |
| return err; |
| } |
| |
| static int tegra_close_channel(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct tegra_drm_file *fpriv = file->driver_priv; |
| struct drm_tegra_close_channel *args = data; |
| struct tegra_drm_context *context; |
| |
| context = tegra_drm_get_context(args->context); |
| |
| if (!tegra_drm_file_owns_context(fpriv, context)) |
| return -EINVAL; |
| |
| list_del(&context->list); |
| tegra_drm_context_free(context); |
| |
| return 0; |
| } |
| |
| static int tegra_get_syncpt(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct tegra_drm_file *fpriv = file->driver_priv; |
| struct drm_tegra_get_syncpt *args = data; |
| struct tegra_drm_context *context; |
| struct host1x_syncpt *syncpt; |
| |
| context = tegra_drm_get_context(args->context); |
| |
| if (!tegra_drm_file_owns_context(fpriv, context)) |
| return -ENODEV; |
| |
| if (args->index >= context->client->base.num_syncpts) |
| return -EINVAL; |
| |
| syncpt = context->client->base.syncpts[args->index]; |
| args->id = host1x_syncpt_id(syncpt); |
| |
| return 0; |
| } |
| |
| static int tegra_submit(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct tegra_drm_file *fpriv = file->driver_priv; |
| struct drm_tegra_submit *args = data; |
| struct tegra_drm_context *context; |
| |
| context = tegra_drm_get_context(args->context); |
| |
| if (!tegra_drm_file_owns_context(fpriv, context)) |
| return -ENODEV; |
| |
| return context->client->ops->submit(context, args, drm, file); |
| } |
| |
| static int tegra_get_syncpt_base(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct tegra_drm_file *fpriv = file->driver_priv; |
| struct drm_tegra_get_syncpt_base *args = data; |
| struct tegra_drm_context *context; |
| struct host1x_syncpt_base *base; |
| struct host1x_syncpt *syncpt; |
| |
| context = tegra_drm_get_context(args->context); |
| |
| if (!tegra_drm_file_owns_context(fpriv, context)) |
| return -ENODEV; |
| |
| if (args->syncpt >= context->client->base.num_syncpts) |
| return -EINVAL; |
| |
| syncpt = context->client->base.syncpts[args->syncpt]; |
| |
| base = host1x_syncpt_get_base(syncpt); |
| if (!base) |
| return -ENXIO; |
| |
| args->id = host1x_syncpt_base_id(base); |
| |
| return 0; |
| } |
| |
| static int tegra_gem_set_tiling(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct drm_tegra_gem_set_tiling *args = data; |
| enum tegra_bo_tiling_mode mode; |
| struct drm_gem_object *gem; |
| unsigned long value = 0; |
| struct tegra_bo *bo; |
| |
| switch (args->mode) { |
| case DRM_TEGRA_GEM_TILING_MODE_PITCH: |
| mode = TEGRA_BO_TILING_MODE_PITCH; |
| |
| if (args->value != 0) |
| return -EINVAL; |
| |
| break; |
| |
| case DRM_TEGRA_GEM_TILING_MODE_TILED: |
| mode = TEGRA_BO_TILING_MODE_TILED; |
| |
| if (args->value != 0) |
| return -EINVAL; |
| |
| break; |
| |
| case DRM_TEGRA_GEM_TILING_MODE_BLOCK: |
| mode = TEGRA_BO_TILING_MODE_BLOCK; |
| |
| if (args->value > 5) |
| return -EINVAL; |
| |
| value = args->value; |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| gem = drm_gem_object_lookup(file, args->handle); |
| if (!gem) |
| return -ENOENT; |
| |
| bo = to_tegra_bo(gem); |
| |
| bo->tiling.mode = mode; |
| bo->tiling.value = value; |
| |
| drm_gem_object_unreference_unlocked(gem); |
| |
| return 0; |
| } |
| |
| static int tegra_gem_get_tiling(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct drm_tegra_gem_get_tiling *args = data; |
| struct drm_gem_object *gem; |
| struct tegra_bo *bo; |
| int err = 0; |
| |
| gem = drm_gem_object_lookup(file, args->handle); |
| if (!gem) |
| return -ENOENT; |
| |
| bo = to_tegra_bo(gem); |
| |
| switch (bo->tiling.mode) { |
| case TEGRA_BO_TILING_MODE_PITCH: |
| args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH; |
| args->value = 0; |
| break; |
| |
| case TEGRA_BO_TILING_MODE_TILED: |
| args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED; |
| args->value = 0; |
| break; |
| |
| case TEGRA_BO_TILING_MODE_BLOCK: |
| args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK; |
| args->value = bo->tiling.value; |
| break; |
| |
| default: |
| err = -EINVAL; |
| break; |
| } |
| |
| drm_gem_object_unreference_unlocked(gem); |
| |
| return err; |
| } |
| |
| static int tegra_gem_set_flags(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct drm_tegra_gem_set_flags *args = data; |
| struct drm_gem_object *gem; |
| struct tegra_bo *bo; |
| |
| if (args->flags & ~DRM_TEGRA_GEM_FLAGS) |
| return -EINVAL; |
| |
| gem = drm_gem_object_lookup(file, args->handle); |
| if (!gem) |
| return -ENOENT; |
| |
| bo = to_tegra_bo(gem); |
| bo->flags = 0; |
| |
| if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP) |
| bo->flags |= TEGRA_BO_BOTTOM_UP; |
| |
| drm_gem_object_unreference_unlocked(gem); |
| |
| return 0; |
| } |
| |
| static int tegra_gem_get_flags(struct drm_device *drm, void *data, |
| struct drm_file *file) |
| { |
| struct drm_tegra_gem_get_flags *args = data; |
| struct drm_gem_object *gem; |
| struct tegra_bo *bo; |
| |
| gem = drm_gem_object_lookup(file, args->handle); |
| if (!gem) |
| return -ENOENT; |
| |
| bo = to_tegra_bo(gem); |
| args->flags = 0; |
| |
| if (bo->flags & TEGRA_BO_BOTTOM_UP) |
| args->flags |= DRM_TEGRA_GEM_BOTTOM_UP; |
| |
| drm_gem_object_unreference_unlocked(gem); |
| |
| return 0; |
| } |
| #endif |
| |
| static const struct drm_ioctl_desc tegra_drm_ioctls[] = { |
| #ifdef CONFIG_DRM_TEGRA_STAGING |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, 0), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, 0), |
| #endif |
| }; |
| |
| static const struct file_operations tegra_drm_fops = { |
| .owner = THIS_MODULE, |
| .open = drm_open, |
| .release = drm_release, |
| .unlocked_ioctl = drm_ioctl, |
| .mmap = tegra_drm_mmap, |
| .poll = drm_poll, |
| .read = drm_read, |
| #ifdef CONFIG_COMPAT |
| .compat_ioctl = drm_compat_ioctl, |
| #endif |
| .llseek = noop_llseek, |
| }; |
| |
| static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, |
| unsigned int pipe) |
| { |
| struct drm_crtc *crtc; |
| |
| list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) { |
| if (pipe == drm_crtc_index(crtc)) |
| return crtc; |
| } |
| |
| return NULL; |
| } |
| |
| static u32 tegra_drm_get_vblank_counter(struct drm_device *drm, |
| unsigned int pipe) |
| { |
| struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); |
| struct tegra_dc *dc = to_tegra_dc(crtc); |
| |
| if (!crtc) |
| return 0; |
| |
| return tegra_dc_get_vblank_counter(dc); |
| } |
| |
| static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe) |
| { |
| struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); |
| struct tegra_dc *dc = to_tegra_dc(crtc); |
| |
| if (!crtc) |
| return -ENODEV; |
| |
| tegra_dc_enable_vblank(dc); |
| |
| return 0; |
| } |
| |
| static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe) |
| { |
| struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); |
| struct tegra_dc *dc = to_tegra_dc(crtc); |
| |
| if (crtc) |
| tegra_dc_disable_vblank(dc); |
| } |
| |
| static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file) |
| { |
| struct tegra_drm_file *fpriv = file->driver_priv; |
| struct tegra_drm_context *context, *tmp; |
| |
| list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) |
| tegra_drm_context_free(context); |
| |
| kfree(fpriv); |
| } |
| |
| #ifdef CONFIG_DEBUG_FS |
| static int tegra_debugfs_framebuffers(struct seq_file *s, void *data) |
| { |
| struct drm_info_node *node = (struct drm_info_node *)s->private; |
| struct drm_device *drm = node->minor->dev; |
| struct drm_framebuffer *fb; |
| |
| mutex_lock(&drm->mode_config.fb_lock); |
| |
| list_for_each_entry(fb, &drm->mode_config.fb_list, head) { |
| seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n", |
| fb->base.id, fb->width, fb->height, fb->depth, |
| fb->bits_per_pixel, |
| drm_framebuffer_read_refcount(fb)); |
| } |
| |
| mutex_unlock(&drm->mode_config.fb_lock); |
| |
| return 0; |
| } |
| |
| static int tegra_debugfs_iova(struct seq_file *s, void *data) |
| { |
| struct drm_info_node *node = (struct drm_info_node *)s->private; |
| struct drm_device *drm = node->minor->dev; |
| struct tegra_drm *tegra = drm->dev_private; |
| |
| return drm_mm_dump_table(s, &tegra->mm); |
| } |
| |
| static struct drm_info_list tegra_debugfs_list[] = { |
| { "framebuffers", tegra_debugfs_framebuffers, 0 }, |
| { "iova", tegra_debugfs_iova, 0 }, |
| }; |
| |
| static int tegra_debugfs_init(struct drm_minor *minor) |
| { |
| return drm_debugfs_create_files(tegra_debugfs_list, |
| ARRAY_SIZE(tegra_debugfs_list), |
| minor->debugfs_root, minor); |
| } |
| |
| static void tegra_debugfs_cleanup(struct drm_minor *minor) |
| { |
| drm_debugfs_remove_files(tegra_debugfs_list, |
| ARRAY_SIZE(tegra_debugfs_list), minor); |
| } |
| #endif |
| |
| static struct drm_driver tegra_drm_driver = { |
| .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | |
| DRIVER_ATOMIC, |
| .load = tegra_drm_load, |
| .unload = tegra_drm_unload, |
| .open = tegra_drm_open, |
| .preclose = tegra_drm_preclose, |
| .lastclose = tegra_drm_lastclose, |
| |
| .get_vblank_counter = tegra_drm_get_vblank_counter, |
| .enable_vblank = tegra_drm_enable_vblank, |
| .disable_vblank = tegra_drm_disable_vblank, |
| |
| #if defined(CONFIG_DEBUG_FS) |
| .debugfs_init = tegra_debugfs_init, |
| .debugfs_cleanup = tegra_debugfs_cleanup, |
| #endif |
| |
| .gem_free_object_unlocked = tegra_bo_free_object, |
| .gem_vm_ops = &tegra_bo_vm_ops, |
| |
| .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
| .prime_fd_to_handle = drm_gem_prime_fd_to_handle, |
| .gem_prime_export = tegra_gem_prime_export, |
| .gem_prime_import = tegra_gem_prime_import, |
| |
| .dumb_create = tegra_bo_dumb_create, |
| .dumb_map_offset = tegra_bo_dumb_map_offset, |
| .dumb_destroy = drm_gem_dumb_destroy, |
| |
| .ioctls = tegra_drm_ioctls, |
| .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls), |
| .fops = &tegra_drm_fops, |
| |
| .name = DRIVER_NAME, |
| .desc = DRIVER_DESC, |
| .date = DRIVER_DATE, |
| .major = DRIVER_MAJOR, |
| .minor = DRIVER_MINOR, |
| .patchlevel = DRIVER_PATCHLEVEL, |
| }; |
| |
| int tegra_drm_register_client(struct tegra_drm *tegra, |
| struct tegra_drm_client *client) |
| { |
| mutex_lock(&tegra->clients_lock); |
| list_add_tail(&client->list, &tegra->clients); |
| mutex_unlock(&tegra->clients_lock); |
| |
| return 0; |
| } |
| |
| int tegra_drm_unregister_client(struct tegra_drm *tegra, |
| struct tegra_drm_client *client) |
| { |
| mutex_lock(&tegra->clients_lock); |
| list_del_init(&client->list); |
| mutex_unlock(&tegra->clients_lock); |
| |
| return 0; |
| } |
| |
| static int host1x_drm_probe(struct host1x_device *dev) |
| { |
| struct drm_driver *driver = &tegra_drm_driver; |
| struct drm_device *drm; |
| int err; |
| |
| drm = drm_dev_alloc(driver, &dev->dev); |
| if (!drm) |
| return -ENOMEM; |
| |
| dev_set_drvdata(&dev->dev, drm); |
| |
| err = drm_dev_register(drm, 0); |
| if (err < 0) |
| goto unref; |
| |
| DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name, |
| driver->major, driver->minor, driver->patchlevel, |
| driver->date, drm->primary->index); |
| |
| return 0; |
| |
| unref: |
| drm_dev_unref(drm); |
| return err; |
| } |
| |
| static int host1x_drm_remove(struct host1x_device *dev) |
| { |
| struct drm_device *drm = dev_get_drvdata(&dev->dev); |
| |
| drm_dev_unregister(drm); |
| drm_dev_unref(drm); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int host1x_drm_suspend(struct device *dev) |
| { |
| struct drm_device *drm = dev_get_drvdata(dev); |
| struct tegra_drm *tegra = drm->dev_private; |
| |
| drm_kms_helper_poll_disable(drm); |
| tegra_drm_fb_suspend(drm); |
| |
| tegra->state = drm_atomic_helper_suspend(drm); |
| if (IS_ERR(tegra->state)) { |
| tegra_drm_fb_resume(drm); |
| drm_kms_helper_poll_enable(drm); |
| return PTR_ERR(tegra->state); |
| } |
| |
| return 0; |
| } |
| |
| static int host1x_drm_resume(struct device *dev) |
| { |
| struct drm_device *drm = dev_get_drvdata(dev); |
| struct tegra_drm *tegra = drm->dev_private; |
| |
| drm_atomic_helper_resume(drm, tegra->state); |
| tegra_drm_fb_resume(drm); |
| drm_kms_helper_poll_enable(drm); |
| |
| return 0; |
| } |
| #endif |
| |
| static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend, |
| host1x_drm_resume); |
| |
| static const struct of_device_id host1x_drm_subdevs[] = { |
| { .compatible = "nvidia,tegra20-dc", }, |
| { .compatible = "nvidia,tegra20-hdmi", }, |
| { .compatible = "nvidia,tegra20-gr2d", }, |
| { .compatible = "nvidia,tegra20-gr3d", }, |
| { .compatible = "nvidia,tegra30-dc", }, |
| { .compatible = "nvidia,tegra30-hdmi", }, |
| { .compatible = "nvidia,tegra30-gr2d", }, |
| { .compatible = "nvidia,tegra30-gr3d", }, |
| { .compatible = "nvidia,tegra114-dsi", }, |
| { .compatible = "nvidia,tegra114-hdmi", }, |
| { .compatible = "nvidia,tegra114-gr3d", }, |
| { .compatible = "nvidia,tegra124-dc", }, |
| { .compatible = "nvidia,tegra124-sor", }, |
| { .compatible = "nvidia,tegra124-hdmi", }, |
| { .compatible = "nvidia,tegra124-dsi", }, |
| { .compatible = "nvidia,tegra132-dsi", }, |
| { .compatible = "nvidia,tegra210-dc", }, |
| { .compatible = "nvidia,tegra210-dsi", }, |
| { .compatible = "nvidia,tegra210-sor", }, |
| { .compatible = "nvidia,tegra210-sor1", }, |
| { /* sentinel */ } |
| }; |
| |
| static struct host1x_driver host1x_drm_driver = { |
| .driver = { |
| .name = "drm", |
| .pm = &host1x_drm_pm_ops, |
| }, |
| .probe = host1x_drm_probe, |
| .remove = host1x_drm_remove, |
| .subdevs = host1x_drm_subdevs, |
| }; |
| |
| static struct platform_driver * const drivers[] = { |
| &tegra_dc_driver, |
| &tegra_hdmi_driver, |
| &tegra_dsi_driver, |
| &tegra_dpaux_driver, |
| &tegra_sor_driver, |
| &tegra_gr2d_driver, |
| &tegra_gr3d_driver, |
| }; |
| |
| static int __init host1x_drm_init(void) |
| { |
| int err; |
| |
| err = host1x_driver_register(&host1x_drm_driver); |
| if (err < 0) |
| return err; |
| |
| err = platform_register_drivers(drivers, ARRAY_SIZE(drivers)); |
| if (err < 0) |
| goto unregister_host1x; |
| |
| return 0; |
| |
| unregister_host1x: |
| host1x_driver_unregister(&host1x_drm_driver); |
| return err; |
| } |
| module_init(host1x_drm_init); |
| |
| static void __exit host1x_drm_exit(void) |
| { |
| platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); |
| host1x_driver_unregister(&host1x_drm_driver); |
| } |
| module_exit(host1x_drm_exit); |
| |
| MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>"); |
| MODULE_DESCRIPTION("NVIDIA Tegra DRM driver"); |
| MODULE_LICENSE("GPL v2"); |