| /* |
| * Copyright (C) 2012 Avionic Design GmbH |
| * Copyright (C) 2012-2016 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/bitops.h> |
| #include <linux/host1x.h> |
| #include <linux/idr.h> |
| #include <linux/iommu.h> |
| |
| #include <drm/drm_atomic.h> |
| #include <drm/drm_atomic_helper.h> |
| |
| #if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) |
| #include <asm/dma-iommu.h> |
| #endif |
| |
| #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 |
| |
| #define CARVEOUT_SZ SZ_64M |
| #define CDMA_GATHER_FETCHES_MAX_NB 16383 |
| |
| struct tegra_drm_file { |
| struct idr contexts; |
| struct mutex lock; |
| }; |
| |
| static int tegra_atomic_check(struct drm_device *drm, |
| struct drm_atomic_state *state) |
| { |
| int err; |
| |
| err = drm_atomic_helper_check(drm, state); |
| if (err < 0) |
| return err; |
| |
| return tegra_display_hub_atomic_check(drm, state); |
| } |
| |
| static const struct drm_mode_config_funcs tegra_drm_mode_config_funcs = { |
| .fb_create = tegra_fb_create, |
| #ifdef CONFIG_DRM_FBDEV_EMULATION |
| .output_poll_changed = drm_fb_helper_output_poll_changed, |
| #endif |
| .atomic_check = tegra_atomic_check, |
| .atomic_commit = drm_atomic_helper_commit, |
| }; |
| |
| static void tegra_atomic_commit_tail(struct drm_atomic_state *old_state) |
| { |
| struct drm_device *drm = old_state->dev; |
| struct tegra_drm *tegra = drm->dev_private; |
| |
| if (tegra->hub) { |
| drm_atomic_helper_commit_modeset_disables(drm, old_state); |
| tegra_display_hub_atomic_commit(drm, old_state); |
| drm_atomic_helper_commit_planes(drm, old_state, 0); |
| drm_atomic_helper_commit_modeset_enables(drm, old_state); |
| drm_atomic_helper_commit_hw_done(old_state); |
| drm_atomic_helper_wait_for_vblanks(drm, old_state); |
| drm_atomic_helper_cleanup_planes(drm, old_state); |
| } else { |
| drm_atomic_helper_commit_tail_rpm(old_state); |
| } |
| } |
| |
| static const struct drm_mode_config_helper_funcs |
| tegra_drm_mode_config_helpers = { |
| .atomic_commit_tail = tegra_atomic_commit_tail, |
| }; |
| |
| 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)) { |
| u64 carveout_start, carveout_end, gem_start, gem_end; |
| struct iommu_domain_geometry *geometry; |
| unsigned long order; |
| |
| tegra->domain = iommu_domain_alloc(&platform_bus_type); |
| if (!tegra->domain) { |
| err = -ENOMEM; |
| goto free; |
| } |
| |
| err = iova_cache_get(); |
| if (err < 0) |
| goto domain; |
| |
| geometry = &tegra->domain->geometry; |
| gem_start = geometry->aperture_start; |
| gem_end = geometry->aperture_end - CARVEOUT_SZ; |
| carveout_start = gem_end + 1; |
| carveout_end = geometry->aperture_end; |
| |
| order = __ffs(tegra->domain->pgsize_bitmap); |
| init_iova_domain(&tegra->carveout.domain, 1UL << order, |
| carveout_start >> order); |
| |
| tegra->carveout.shift = iova_shift(&tegra->carveout.domain); |
| tegra->carveout.limit = carveout_end >> tegra->carveout.shift; |
| |
| drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1); |
| mutex_init(&tegra->mm_lock); |
| |
| DRM_DEBUG("IOMMU apertures:\n"); |
| DRM_DEBUG(" GEM: %#llx-%#llx\n", gem_start, gem_end); |
| DRM_DEBUG(" Carveout: %#llx-%#llx\n", carveout_start, |
| carveout_end); |
| } |
| |
| mutex_init(&tegra->clients_lock); |
| INIT_LIST_HEAD(&tegra->clients); |
| |
| 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.allow_fb_modifiers = true; |
| |
| drm->mode_config.normalize_zpos = true; |
| |
| drm->mode_config.funcs = &tegra_drm_mode_config_funcs; |
| drm->mode_config.helper_private = &tegra_drm_mode_config_helpers; |
| |
| 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; |
| |
| if (tegra->hub) { |
| err = tegra_display_hub_prepare(tegra->hub); |
| if (err < 0) |
| goto device; |
| } |
| |
| /* |
| * 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 hub; |
| |
| drm_mode_config_reset(drm); |
| |
| err = tegra_drm_fb_init(drm); |
| if (err < 0) |
| goto hub; |
| |
| return 0; |
| |
| hub: |
| if (tegra->hub) |
| tegra_display_hub_cleanup(tegra->hub); |
| 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) { |
| mutex_destroy(&tegra->mm_lock); |
| drm_mm_takedown(&tegra->mm); |
| put_iova_domain(&tegra->carveout.domain); |
| iova_cache_put(); |
| } |
| domain: |
| if (tegra->domain) |
| iommu_domain_free(tegra->domain); |
| free: |
| kfree(tegra); |
| return err; |
| } |
| |
| static void 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_atomic_helper_shutdown(drm); |
| drm_mode_config_cleanup(drm); |
| |
| err = host1x_device_exit(device); |
| if (err < 0) |
| return; |
| |
| if (tegra->domain) { |
| mutex_destroy(&tegra->mm_lock); |
| drm_mm_takedown(&tegra->mm); |
| put_iova_domain(&tegra->carveout.domain); |
| iova_cache_put(); |
| iommu_domain_free(tegra->domain); |
| } |
| |
| kfree(tegra); |
| } |
| |
| 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; |
| |
| idr_init(&fpriv->contexts); |
| mutex_init(&fpriv->lock); |
| 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 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; |
| |
| 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) |
| { |
| struct host1x_client *client = &context->client->base; |
| unsigned int num_cmdbufs = args->num_cmdbufs; |
| unsigned int num_relocs = args->num_relocs; |
| struct drm_tegra_cmdbuf __user *user_cmdbufs; |
| struct drm_tegra_reloc __user *user_relocs; |
| struct drm_tegra_syncpt __user *user_syncpt; |
| struct drm_tegra_syncpt syncpt; |
| struct host1x *host1x = dev_get_drvdata(drm->dev->parent); |
| struct drm_gem_object **refs; |
| struct host1x_syncpt *sp; |
| struct host1x_job *job; |
| unsigned int num_refs; |
| int err; |
| |
| user_cmdbufs = u64_to_user_ptr(args->cmdbufs); |
| user_relocs = u64_to_user_ptr(args->relocs); |
| user_syncpt = u64_to_user_ptr(args->syncpts); |
| |
| /* We don't yet support other than one syncpt_incr struct per submit */ |
| if (args->num_syncpts != 1) |
| return -EINVAL; |
| |
| /* We don't yet support waitchks */ |
| if (args->num_waitchks != 0) |
| return -EINVAL; |
| |
| job = host1x_job_alloc(context->channel, args->num_cmdbufs, |
| args->num_relocs); |
| if (!job) |
| return -ENOMEM; |
| |
| job->num_relocs = args->num_relocs; |
| job->client = client; |
| job->class = client->class; |
| job->serialize = true; |
| |
| /* |
| * Track referenced BOs so that they can be unreferenced after the |
| * submission is complete. |
| */ |
| num_refs = num_cmdbufs + num_relocs * 2; |
| |
| refs = kmalloc_array(num_refs, sizeof(*refs), GFP_KERNEL); |
| if (!refs) { |
| err = -ENOMEM; |
| goto put; |
| } |
| |
| /* reuse as an iterator later */ |
| num_refs = 0; |
| |
| while (num_cmdbufs) { |
| struct drm_tegra_cmdbuf cmdbuf; |
| struct host1x_bo *bo; |
| struct tegra_bo *obj; |
| u64 offset; |
| |
| if (copy_from_user(&cmdbuf, user_cmdbufs, sizeof(cmdbuf))) { |
| err = -EFAULT; |
| goto fail; |
| } |
| |
| /* |
| * The maximum number of CDMA gather fetches is 16383, a higher |
| * value means the words count is malformed. |
| */ |
| if (cmdbuf.words > CDMA_GATHER_FETCHES_MAX_NB) { |
| err = -EINVAL; |
| goto fail; |
| } |
| |
| bo = host1x_bo_lookup(file, cmdbuf.handle); |
| if (!bo) { |
| err = -ENOENT; |
| goto fail; |
| } |
| |
| offset = (u64)cmdbuf.offset + (u64)cmdbuf.words * sizeof(u32); |
| obj = host1x_to_tegra_bo(bo); |
| refs[num_refs++] = &obj->gem; |
| |
| /* |
| * Gather buffer base address must be 4-bytes aligned, |
| * unaligned offset is malformed and cause commands stream |
| * corruption on the buffer address relocation. |
| */ |
| if (offset & 3 || offset > obj->gem.size) { |
| err = -EINVAL; |
| goto fail; |
| } |
| |
| host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset); |
| num_cmdbufs--; |
| user_cmdbufs++; |
| } |
| |
| /* copy and resolve relocations from submit */ |
| while (num_relocs--) { |
| struct host1x_reloc *reloc; |
| struct tegra_bo *obj; |
| |
| err = host1x_reloc_copy_from_user(&job->relocs[num_relocs], |
| &user_relocs[num_relocs], drm, |
| file); |
| if (err < 0) |
| goto fail; |
| |
| reloc = &job->relocs[num_relocs]; |
| obj = host1x_to_tegra_bo(reloc->cmdbuf.bo); |
| refs[num_refs++] = &obj->gem; |
| |
| /* |
| * The unaligned cmdbuf offset will cause an unaligned write |
| * during of the relocations patching, corrupting the commands |
| * stream. |
| */ |
| if (reloc->cmdbuf.offset & 3 || |
| reloc->cmdbuf.offset >= obj->gem.size) { |
| err = -EINVAL; |
| goto fail; |
| } |
| |
| obj = host1x_to_tegra_bo(reloc->target.bo); |
| refs[num_refs++] = &obj->gem; |
| |
| if (reloc->target.offset >= obj->gem.size) { |
| err = -EINVAL; |
| goto fail; |
| } |
| } |
| |
| if (copy_from_user(&syncpt, user_syncpt, sizeof(syncpt))) { |
| err = -EFAULT; |
| goto fail; |
| } |
| |
| /* check whether syncpoint ID is valid */ |
| sp = host1x_syncpt_get(host1x, syncpt.id); |
| if (!sp) { |
| err = -ENOENT; |
| goto fail; |
| } |
| |
| job->is_addr_reg = context->client->ops->is_addr_reg; |
| job->is_valid_class = context->client->ops->is_valid_class; |
| 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) { |
| host1x_job_unpin(job); |
| goto fail; |
| } |
| |
| args->fence = job->syncpt_end; |
| |
| fail: |
| while (num_refs--) |
| drm_gem_object_put_unlocked(refs[num_refs]); |
| |
| kfree(refs); |
| |
| put: |
| host1x_job_put(job); |
| return err; |
| } |
| |
| |
| #ifdef CONFIG_DRM_TEGRA_STAGING |
| 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_put_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, |
| msecs_to_jiffies(args->timeout), |
| &args->value); |
| } |
| |
| static int tegra_client_open(struct tegra_drm_file *fpriv, |
| struct tegra_drm_client *client, |
| struct tegra_drm_context *context) |
| { |
| int err; |
| |
| err = client->ops->open_channel(client, context); |
| if (err < 0) |
| return err; |
| |
| err = idr_alloc(&fpriv->contexts, context, 1, 0, GFP_KERNEL); |
| if (err < 0) { |
| client->ops->close_channel(context); |
| return err; |
| } |
| |
| context->client = client; |
| context->id = err; |
| |
| return 0; |
| } |
| |
| 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; |
| |
| mutex_lock(&fpriv->lock); |
| |
| list_for_each_entry(client, &tegra->clients, list) |
| if (client->base.class == args->client) { |
| err = tegra_client_open(fpriv, client, context); |
| if (err < 0) |
| break; |
| |
| args->context = context->id; |
| break; |
| } |
| |
| if (err < 0) |
| kfree(context); |
| |
| mutex_unlock(&fpriv->lock); |
| 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; |
| int err = 0; |
| |
| mutex_lock(&fpriv->lock); |
| |
| context = idr_find(&fpriv->contexts, args->context); |
| if (!context) { |
| err = -EINVAL; |
| goto unlock; |
| } |
| |
| idr_remove(&fpriv->contexts, context->id); |
| tegra_drm_context_free(context); |
| |
| unlock: |
| mutex_unlock(&fpriv->lock); |
| return err; |
| } |
| |
| 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; |
| int err = 0; |
| |
| mutex_lock(&fpriv->lock); |
| |
| context = idr_find(&fpriv->contexts, args->context); |
| if (!context) { |
| err = -ENODEV; |
| goto unlock; |
| } |
| |
| if (args->index >= context->client->base.num_syncpts) { |
| err = -EINVAL; |
| goto unlock; |
| } |
| |
| syncpt = context->client->base.syncpts[args->index]; |
| args->id = host1x_syncpt_id(syncpt); |
| |
| unlock: |
| mutex_unlock(&fpriv->lock); |
| return err; |
| } |
| |
| 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; |
| int err; |
| |
| mutex_lock(&fpriv->lock); |
| |
| context = idr_find(&fpriv->contexts, args->context); |
| if (!context) { |
| err = -ENODEV; |
| goto unlock; |
| } |
| |
| err = context->client->ops->submit(context, args, drm, file); |
| |
| unlock: |
| mutex_unlock(&fpriv->lock); |
| return err; |
| } |
| |
| 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; |
| int err = 0; |
| |
| mutex_lock(&fpriv->lock); |
| |
| context = idr_find(&fpriv->contexts, args->context); |
| if (!context) { |
| err = -ENODEV; |
| goto unlock; |
| } |
| |
| if (args->syncpt >= context->client->base.num_syncpts) { |
| err = -EINVAL; |
| goto unlock; |
| } |
| |
| syncpt = context->client->base.syncpts[args->syncpt]; |
| |
| base = host1x_syncpt_get_base(syncpt); |
| if (!base) { |
| err = -ENXIO; |
| goto unlock; |
| } |
| |
| args->id = host1x_syncpt_base_id(base); |
| |
| unlock: |
| mutex_unlock(&fpriv->lock); |
| return err; |
| } |
| |
| 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_put_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_put_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_put_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_put_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, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, |
| DRM_UNLOCKED | DRM_RENDER_ALLOW), |
| #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, |
| .compat_ioctl = drm_compat_ioctl, |
| .llseek = noop_llseek, |
| }; |
| |
| static int tegra_drm_context_cleanup(int id, void *p, void *data) |
| { |
| struct tegra_drm_context *context = p; |
| |
| tegra_drm_context_free(context); |
| |
| return 0; |
| } |
| |
| static void tegra_drm_postclose(struct drm_device *drm, struct drm_file *file) |
| { |
| struct tegra_drm_file *fpriv = file->driver_priv; |
| |
| mutex_lock(&fpriv->lock); |
| idr_for_each(&fpriv->contexts, tegra_drm_context_cleanup, NULL); |
| mutex_unlock(&fpriv->lock); |
| |
| idr_destroy(&fpriv->contexts); |
| mutex_destroy(&fpriv->lock); |
| 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->format->depth, |
| fb->format->cpp[0] * 8, |
| 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; |
| struct drm_printer p = drm_seq_file_printer(s); |
| |
| if (tegra->domain) { |
| mutex_lock(&tegra->mm_lock); |
| drm_mm_print(&tegra->mm, &p); |
| mutex_unlock(&tegra->mm_lock); |
| } |
| |
| return 0; |
| } |
| |
| 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); |
| } |
| #endif |
| |
| static struct drm_driver tegra_drm_driver = { |
| .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | |
| DRIVER_ATOMIC | DRIVER_RENDER, |
| .load = tegra_drm_load, |
| .unload = tegra_drm_unload, |
| .open = tegra_drm_open, |
| .postclose = tegra_drm_postclose, |
| .lastclose = drm_fb_helper_lastclose, |
| |
| #if defined(CONFIG_DEBUG_FS) |
| .debugfs_init = tegra_debugfs_init, |
| #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, |
| |
| .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; |
| } |
| |
| struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client, |
| bool shared) |
| { |
| struct drm_device *drm = dev_get_drvdata(client->parent); |
| struct tegra_drm *tegra = drm->dev_private; |
| struct iommu_group *group = NULL; |
| int err; |
| |
| if (tegra->domain) { |
| group = iommu_group_get(client->dev); |
| if (!group) { |
| dev_err(client->dev, "failed to get IOMMU group\n"); |
| return ERR_PTR(-ENODEV); |
| } |
| |
| if (!shared || (shared && (group != tegra->group))) { |
| #if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) |
| if (client->dev->archdata.mapping) { |
| struct dma_iommu_mapping *mapping = |
| to_dma_iommu_mapping(client->dev); |
| arm_iommu_detach_device(client->dev); |
| arm_iommu_release_mapping(mapping); |
| } |
| #endif |
| err = iommu_attach_group(tegra->domain, group); |
| if (err < 0) { |
| iommu_group_put(group); |
| return ERR_PTR(err); |
| } |
| |
| if (shared && !tegra->group) |
| tegra->group = group; |
| } |
| } |
| |
| return group; |
| } |
| |
| void host1x_client_iommu_detach(struct host1x_client *client, |
| struct iommu_group *group) |
| { |
| struct drm_device *drm = dev_get_drvdata(client->parent); |
| struct tegra_drm *tegra = drm->dev_private; |
| |
| if (group) { |
| if (group == tegra->group) { |
| iommu_detach_group(tegra->domain, group); |
| tegra->group = NULL; |
| } |
| |
| iommu_group_put(group); |
| } |
| } |
| |
| void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *dma) |
| { |
| struct iova *alloc; |
| void *virt; |
| gfp_t gfp; |
| int err; |
| |
| if (tegra->domain) |
| size = iova_align(&tegra->carveout.domain, size); |
| else |
| size = PAGE_ALIGN(size); |
| |
| gfp = GFP_KERNEL | __GFP_ZERO; |
| if (!tegra->domain) { |
| /* |
| * Many units only support 32-bit addresses, even on 64-bit |
| * SoCs. If there is no IOMMU to translate into a 32-bit IO |
| * virtual address space, force allocations to be in the |
| * lower 32-bit range. |
| */ |
| gfp |= GFP_DMA; |
| } |
| |
| virt = (void *)__get_free_pages(gfp, get_order(size)); |
| if (!virt) |
| return ERR_PTR(-ENOMEM); |
| |
| if (!tegra->domain) { |
| /* |
| * If IOMMU is disabled, devices address physical memory |
| * directly. |
| */ |
| *dma = virt_to_phys(virt); |
| return virt; |
| } |
| |
| alloc = alloc_iova(&tegra->carveout.domain, |
| size >> tegra->carveout.shift, |
| tegra->carveout.limit, true); |
| if (!alloc) { |
| err = -EBUSY; |
| goto free_pages; |
| } |
| |
| *dma = iova_dma_addr(&tegra->carveout.domain, alloc); |
| err = iommu_map(tegra->domain, *dma, virt_to_phys(virt), |
| size, IOMMU_READ | IOMMU_WRITE); |
| if (err < 0) |
| goto free_iova; |
| |
| return virt; |
| |
| free_iova: |
| __free_iova(&tegra->carveout.domain, alloc); |
| free_pages: |
| free_pages((unsigned long)virt, get_order(size)); |
| |
| return ERR_PTR(err); |
| } |
| |
| void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt, |
| dma_addr_t dma) |
| { |
| if (tegra->domain) |
| size = iova_align(&tegra->carveout.domain, size); |
| else |
| size = PAGE_ALIGN(size); |
| |
| if (tegra->domain) { |
| iommu_unmap(tegra->domain, dma, size); |
| free_iova(&tegra->carveout.domain, |
| iova_pfn(&tegra->carveout.domain, dma)); |
| } |
| |
| free_pages((unsigned long)virt, get_order(size)); |
| } |
| |
| 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 (IS_ERR(drm)) |
| return PTR_ERR(drm); |
| |
| dev_set_drvdata(&dev->dev, drm); |
| |
| err = drm_fb_helper_remove_conflicting_framebuffers(NULL, "tegradrmfb", false); |
| if (err < 0) |
| goto put; |
| |
| err = drm_dev_register(drm, 0); |
| if (err < 0) |
| goto put; |
| |
| return 0; |
| |
| put: |
| drm_dev_put(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_put(drm); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int host1x_drm_suspend(struct device *dev) |
| { |
| struct drm_device *drm = dev_get_drvdata(dev); |
| |
| return drm_mode_config_helper_suspend(drm); |
| } |
| |
| static int host1x_drm_resume(struct device *dev) |
| { |
| struct drm_device *drm = dev_get_drvdata(dev); |
| |
| return drm_mode_config_helper_resume(drm); |
| } |
| #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,tegra124-vic", }, |
| { .compatible = "nvidia,tegra132-dsi", }, |
| { .compatible = "nvidia,tegra210-dc", }, |
| { .compatible = "nvidia,tegra210-dsi", }, |
| { .compatible = "nvidia,tegra210-sor", }, |
| { .compatible = "nvidia,tegra210-sor1", }, |
| { .compatible = "nvidia,tegra210-vic", }, |
| { .compatible = "nvidia,tegra186-display", }, |
| { .compatible = "nvidia,tegra186-dc", }, |
| { .compatible = "nvidia,tegra186-sor", }, |
| { .compatible = "nvidia,tegra186-sor1", }, |
| { .compatible = "nvidia,tegra186-vic", }, |
| { .compatible = "nvidia,tegra194-display", }, |
| { .compatible = "nvidia,tegra194-dc", }, |
| { .compatible = "nvidia,tegra194-sor", }, |
| { .compatible = "nvidia,tegra194-vic", }, |
| { /* 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_display_hub_driver, |
| &tegra_dc_driver, |
| &tegra_hdmi_driver, |
| &tegra_dsi_driver, |
| &tegra_dpaux_driver, |
| &tegra_sor_driver, |
| &tegra_gr2d_driver, |
| &tegra_gr3d_driver, |
| &tegra_vic_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"); |