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Commit 5688e57e authored by Lucas Stach's avatar Lucas Stach
Browse files

drm/etnaviv: implement dma-buf mmap 



This adds the required boilerplate to allow direct mmap of exported
etnaviv BOs.

Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
Tested-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent a909d3e6

drivers/gpu/drm/etnaviv/etnaviv_drv.c

+1 −0
Original line number Diff line number Diff line
@@ -505,6 +505,7 @@ static struct drm_driver etnaviv_drm_driver = { 
	.gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,

	.gem_prime_vmap     = etnaviv_gem_prime_vmap,

	.gem_prime_vunmap   = etnaviv_gem_prime_vunmap,

	.gem_prime_mmap     = etnaviv_gem_prime_mmap,

#ifdef CONFIG_DEBUG_FS

	.debugfs_init       = etnaviv_debugfs_init,

	.debugfs_cleanup    = etnaviv_debugfs_cleanup,

drivers/gpu/drm/etnaviv/etnaviv_drv.h

+2 −0
Original line number Diff line number Diff line
@@ -78,6 +78,8 @@ int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 
struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);

void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);

void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);

int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,

			   struct vm_area_struct *vma);

struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,

	struct dma_buf_attachment *attach, struct sg_table *sg);

int etnaviv_gem_prime_pin(struct drm_gem_object *obj);

drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c

+13 −0
Original line number Diff line number Diff line
@@ -39,6 +39,19 @@ void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) 
	/* TODO msm_gem_vunmap() */

}



int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,

			   struct vm_area_struct *vma)

{

	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);

	int ret;



	ret = drm_gem_mmap_obj(obj, obj->size, vma);

	if (ret < 0)

		return ret;



	return etnaviv_obj->ops->mmap(etnaviv_obj, vma);

}



int etnaviv_gem_prime_pin(struct drm_gem_object *obj)

{

	if (!obj->import_attach) {