diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/drm.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.c | 1135 |
1 files changed, 1135 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c new file mode 100644 index 000000000..bfad15a91 --- /dev/null +++ b/drivers/gpu/drm/tegra/drm.c @@ -0,0 +1,1135 @@ +/* + * 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_planes(drm, state); + drm_atomic_helper_commit_modeset_enables(drm, state); + + 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 async) +{ + struct tegra_drm *tegra = drm->dev_private; + int err; + + err = drm_atomic_helper_prepare_planes(drm, state); + if (err) + return err; + + /* serialize outstanding asynchronous 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 (async) + 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_TEGRA_FBDEV + .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)) { + tegra->domain = iommu_domain_alloc(&platform_bus_type); + if (!tegra->domain) { + err = -ENOMEM; + goto free; + } + + DRM_DEBUG("IOMMU context initialized\n"); + drm_mm_init(&tegra->mm, 0, SZ_2G); + } + + 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; + + drm_mode_config_reset(drm); + + /* + * 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; + + 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_TEGRA_FBDEV + struct tegra_drm *tegra = drm->dev_private; + + tegra_fbdev_restore_mode(tegra->fbdev); +#endif +} + +static struct host1x_bo * +host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle) +{ + struct drm_gem_object *gem; + struct tegra_bo *bo; + + gem = drm_gem_object_lookup(drm, file, handle); + if (!gem) + return NULL; + + mutex_lock(&drm->struct_mutex); + drm_gem_object_unreference(gem); + mutex_unlock(&drm->struct_mutex); + + 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(drm, file, cmdbuf); + if (!dest->cmdbuf.bo) + return -ENOENT; + + dest->target.bo = host1x_bo_lookup(drm, 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(drm, 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(drm, 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(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(drm, file, args->handle); + if (!gem) + return -ENOENT; + + bo = to_tegra_bo(gem); + + bo->tiling.mode = mode; + bo->tiling.value = value; + + drm_gem_object_unreference(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(drm, 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(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(drm, 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(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(drm, 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(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_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, DRM_UNLOCKED), +#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, 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, 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, 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; + struct drm_crtc *crtc; + + list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) + tegra_dc_cancel_page_flip(crtc, file); + + 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, + atomic_read(&fb->refcount.refcount)); + } + + 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, + .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 = 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; + + drm_dev_set_unique(drm, dev_name(&dev->dev)); + 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); + + drm_kms_helper_poll_disable(drm); + + return 0; +} + +static int host1x_drm_resume(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + + drm_kms_helper_poll_enable(drm); + + return 0; +} +#endif + +static const struct dev_pm_ops host1x_drm_pm_ops = { + SET_SYSTEM_SLEEP_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", }, + { /* 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 int __init host1x_drm_init(void) +{ + int err; + + err = host1x_driver_register(&host1x_drm_driver); + if (err < 0) + return err; + + err = platform_driver_register(&tegra_dc_driver); + if (err < 0) + goto unregister_host1x; + + err = platform_driver_register(&tegra_dsi_driver); + if (err < 0) + goto unregister_dc; + + err = platform_driver_register(&tegra_sor_driver); + if (err < 0) + goto unregister_dsi; + + err = platform_driver_register(&tegra_hdmi_driver); + if (err < 0) + goto unregister_sor; + + err = platform_driver_register(&tegra_dpaux_driver); + if (err < 0) + goto unregister_hdmi; + + err = platform_driver_register(&tegra_gr2d_driver); + if (err < 0) + goto unregister_dpaux; + + err = platform_driver_register(&tegra_gr3d_driver); + if (err < 0) + goto unregister_gr2d; + + return 0; + +unregister_gr2d: + platform_driver_unregister(&tegra_gr2d_driver); +unregister_dpaux: + platform_driver_unregister(&tegra_dpaux_driver); +unregister_hdmi: + platform_driver_unregister(&tegra_hdmi_driver); +unregister_sor: + platform_driver_unregister(&tegra_sor_driver); +unregister_dsi: + platform_driver_unregister(&tegra_dsi_driver); +unregister_dc: + platform_driver_unregister(&tegra_dc_driver); +unregister_host1x: + host1x_driver_unregister(&host1x_drm_driver); + return err; +} +module_init(host1x_drm_init); + +static void __exit host1x_drm_exit(void) +{ + platform_driver_unregister(&tegra_gr3d_driver); + platform_driver_unregister(&tegra_gr2d_driver); + platform_driver_unregister(&tegra_dpaux_driver); + platform_driver_unregister(&tegra_hdmi_driver); + platform_driver_unregister(&tegra_sor_driver); + platform_driver_unregister(&tegra_dsi_driver); + platform_driver_unregister(&tegra_dc_driver); + 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"); |