Commit c308279f authored by Samuel Li's avatar Samuel Li Committed by Alex Deucher
Browse files

drm: export gem dmabuf_ops for drivers to reuse 



Signed-off-by: default avatarSamuel Li <Samuel.Li@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1515100334-6845-1-git-send-email-Samuel.Li@amd.com
parent a10195bb

drivers/gpu/drm/drm_prime.c

+31 −22
Original line number Diff line number Diff line
@@ -180,8 +180,7 @@ static int drm_prime_lookup_buf_handle(struct drm_prime_file_private *prime_fpri 
	return -ENOENT;

}



static int drm_gem_map_attach(struct dma_buf *dma_buf,

			      struct device *target_dev,

int drm_gem_map_attach(struct dma_buf *dma_buf, struct device *target_dev,

		       struct dma_buf_attachment *attach)

{

	struct drm_prime_attachment *prime_attach;
@@ -200,8 +199,9 @@ static int drm_gem_map_attach(struct dma_buf *dma_buf, 


	return dev->driver->gem_prime_pin(obj);

}

EXPORT_SYMBOL(drm_gem_map_attach);



static void drm_gem_map_detach(struct dma_buf *dma_buf,

void drm_gem_map_detach(struct dma_buf *dma_buf,

			struct dma_buf_attachment *attach)

{

	struct drm_prime_attachment *prime_attach = attach->priv;
@@ -228,6 +228,7 @@ static void drm_gem_map_detach(struct dma_buf *dma_buf, 
	kfree(prime_attach);

	attach->priv = NULL;

}

EXPORT_SYMBOL(drm_gem_map_detach);



void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv,

					struct dma_buf *dma_buf)
@@ -254,7 +255,7 @@ void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpr 
	}

}



static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,

struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,

				     enum dma_data_direction dir)

{

	struct drm_prime_attachment *prime_attach = attach->priv;
@@ -291,13 +292,15 @@ static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, 


	return sgt;

}

EXPORT_SYMBOL(drm_gem_map_dma_buf);



static void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,

void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,

			   struct sg_table *sgt,

			   enum dma_data_direction dir)

{

	/* nothing to be done here */

}

EXPORT_SYMBOL(drm_gem_unmap_dma_buf);



/**

 * drm_gem_dmabuf_export - dma_buf export implementation for GEM
@@ -348,47 +351,52 @@ void drm_gem_dmabuf_release(struct dma_buf *dma_buf) 
}

EXPORT_SYMBOL(drm_gem_dmabuf_release);



static void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)

void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)

{

	struct drm_gem_object *obj = dma_buf->priv;

	struct drm_device *dev = obj->dev;



	return dev->driver->gem_prime_vmap(obj);

}

EXPORT_SYMBOL(drm_gem_dmabuf_vmap);



static void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)

void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)

{

	struct drm_gem_object *obj = dma_buf->priv;

	struct drm_device *dev = obj->dev;



	dev->driver->gem_prime_vunmap(obj, vaddr);

}

EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);



static void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,

void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,

				 unsigned long page_num)

{

	return NULL;

}

EXPORT_SYMBOL(drm_gem_dmabuf_kmap_atomic);



static void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,

void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,

				  unsigned long page_num, void *addr)

{



}

static void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf,

				 unsigned long page_num)

EXPORT_SYMBOL(drm_gem_dmabuf_kunmap_atomic);



void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)

{

	return NULL;

}

EXPORT_SYMBOL(drm_gem_dmabuf_kmap);



static void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf,

				  unsigned long page_num, void *addr)

void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num,

			   void *addr)

{



}

EXPORT_SYMBOL(drm_gem_dmabuf_kunmap);



static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,

			       struct vm_area_struct *vma)

int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)

{

	struct drm_gem_object *obj = dma_buf->priv;

	struct drm_device *dev = obj->dev;
@@ -398,6 +406,7 @@ static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, 


	return dev->driver->gem_prime_mmap(obj, vma);

}

EXPORT_SYMBOL(drm_gem_dmabuf_mmap);



static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {

	.attach = drm_gem_map_attach,

include/drm/drm_prime.h

+22 −0
Original line number Diff line number Diff line
@@ -54,6 +54,9 @@ struct device; 


struct dma_buf_export_info;

struct dma_buf;

struct dma_buf_attachment;



enum dma_data_direction;



struct drm_device;

struct drm_gem_object;
@@ -79,6 +82,25 @@ int drm_gem_prime_fd_to_handle(struct drm_device *dev, 
struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,

				      struct dma_buf_export_info *exp_info);

void drm_gem_dmabuf_release(struct dma_buf *dma_buf);

int drm_gem_map_attach(struct dma_buf *dma_buf, struct device *target_dev,

		       struct dma_buf_attachment *attach);

void drm_gem_map_detach(struct dma_buf *dma_buf,

			struct dma_buf_attachment *attach);

struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,

				     enum dma_data_direction dir);

void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,

			   struct sg_table *sgt,

			   enum dma_data_direction dir);

void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf);

void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);

void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,

				 unsigned long page_num);

void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,

				  unsigned long page_num, void *addr);

void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num);

void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num,

			   void *addr);

int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);



int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,

				     dma_addr_t *addrs, int max_pages);

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