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Commit c40f0f1a authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: Introduce tegra_drm_submit() 



Command stream submissions are the same across all devices that expose
a channel to userspace, so move the code into a generic function.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 497c56a5

drivers/gpu/drm/tegra/drm.c

+129 −0
Original line number Diff line number Diff line
@@ -109,6 +109,135 @@ static void tegra_drm_lastclose(struct drm_device *drm) 
	tegra_fbdev_restore_mode(tegra->fbdev);

}



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;

}



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;



		err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));

		if (err)

			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++;

	}



	err = copy_from_user(job->relocarray, relocs,

			     sizeof(*relocs) * num_relocs);

	if (err)

		goto fail;



	while (num_relocs--) {

		struct host1x_reloc *reloc = &job->relocarray[num_relocs];

		struct host1x_bo *cmdbuf, *target;



		cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);

		target = host1x_bo_lookup(drm, file, (u32)reloc->target);



		reloc->cmdbuf = cmdbuf;

		reloc->target = target;



		if (!reloc->target || !reloc->cmdbuf) {

			err = -ENOENT;

			goto fail;

		}

	}



	err = copy_from_user(job->waitchk, waitchks,

			     sizeof(*waitchks) * num_waitchks);

	if (err)

		goto fail;



	err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts,

			     sizeof(syncpt));

	if (err)

		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)

{

drivers/gpu/drm/tegra/drm.h

+5 −0
Original line number Diff line number Diff line
@@ -51,11 +51,16 @@ struct tegra_drm_client_ops { 
	int (*open_channel)(struct tegra_drm_client *client,

			    struct tegra_drm_context *context);

	void (*close_channel)(struct tegra_drm_context *context);

	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);

	int (*submit)(struct tegra_drm_context *context,

		      struct drm_tegra_submit *args, struct drm_device *drm,

		      struct drm_file *file);

};



int tegra_drm_submit(struct tegra_drm_context *context,

		     struct drm_tegra_submit *args, struct drm_device *drm,

		     struct drm_file *file);



struct tegra_drm_client {

	struct host1x_client base;

	struct list_head list;

drivers/gpu/drm/tegra/gr2d.c

+2 −130
Original line number Diff line number Diff line
@@ -91,25 +91,6 @@ static void gr2d_close_channel(struct tegra_drm_context *context) 
	host1x_channel_put(context->channel);

}



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 gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)

{

	struct gr2d *gr2d = dev_get_drvdata(dev);
@@ -135,120 +116,11 @@ static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset) 
	return 0;

}



static int gr2d_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;



		err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));

		if (err)

			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++;

	}



	err = copy_from_user(job->relocarray, relocs,

			     sizeof(*relocs) * num_relocs);

	if (err)

		goto fail;



	while (num_relocs--) {

		struct host1x_reloc *reloc = &job->relocarray[num_relocs];

		struct host1x_bo *cmdbuf, *target;



		cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);

		target = host1x_bo_lookup(drm, file, (u32)reloc->target);



		reloc->cmdbuf = cmdbuf;

		reloc->target = target;



		if (!reloc->target || !reloc->cmdbuf) {

			err = -ENOENT;

			goto fail;

		}

	}



	err = copy_from_user(job->waitchk, waitchks,

			     sizeof(*waitchks) * num_waitchks);

	if (err)

		goto fail;



	err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts,

			     sizeof(syncpt));

	if (err)

		goto fail;



	job->syncpt_id = syncpt.id;

	job->syncpt_incrs = syncpt.incrs;

	job->timeout = 10000;

	job->is_addr_reg = gr2d_is_addr_reg;



	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;

}



static const struct tegra_drm_client_ops gr2d_ops = {

	.open_channel = gr2d_open_channel,

	.close_channel = gr2d_close_channel,

	.submit = gr2d_submit,

	.is_addr_reg = gr2d_is_addr_reg,

	.submit = tegra_drm_submit,

};



static const struct of_device_id gr2d_match[] = {