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drm: Add |struct drm_gem_vram_object| callbacks for |struct drm_driver|

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The provided helpers can be used for the respective callback functions
in |struct drm_driver|.

v4:
	* cleanups from checkpatch.pl
v2:
	* documentation fixes

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-4-tzimmermann@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Thomas Zimmermann 2019-05-08 10:26:13 +02:00 committed by Gerd Hoffmann
parent 6c812bc507
commit 737000fd9c
2 changed files with 59 additions and 0 deletions
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49
drivers/gpu/drm/drm_gem_vram_helper.c
View File

@ -460,3 +460,52 @@ int drm_gem_vram_bo_driver_verify_access(struct ttm_buffer_object *bo,
filp->private_data);
}
EXPORT_SYMBOL(drm_gem_vram_bo_driver_verify_access);
/*
* Helpers for struct drm_driver
*/
/**
* drm_gem_vram_driver_gem_free_object_unlocked() - \
Implements &struct drm_driver.gem_free_object_unlocked
* @gem: GEM object. Refers to &struct drm_gem_vram_object.gem
*/
void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem)
{
struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem);
drm_gem_vram_put(gbo);
}
EXPORT_SYMBOL(drm_gem_vram_driver_gem_free_object_unlocked);
/**
* drm_gem_vram_driver_dumb_mmap_offset() - \
Implements &struct drm_driver.dumb_mmap_offset
* @file: DRM file pointer.
* @dev: DRM device.
* @handle: GEM handle
* @offset: Returns the mapping's memory offset on success
*
* Returns:
* 0 on success, or
* a negative errno code otherwise.
*/
int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file,
struct drm_device *dev,
uint32_t handle, uint64_t *offset)
{
struct drm_gem_object *gem;
struct drm_gem_vram_object *gbo;
gem = drm_gem_object_lookup(file, handle);
if (!gem)
return -ENOENT;
gbo = drm_gem_vram_of_gem(gem);
*offset = drm_gem_vram_mmap_offset(gbo);
drm_gem_object_put_unlocked(gem);
return 0;
}
EXPORT_SYMBOL(drm_gem_vram_driver_dumb_mmap_offset);

10
include/drm/drm_gem_vram_helper.h
View File

@ -99,4 +99,14 @@ void drm_gem_vram_bo_driver_evict_flags(struct ttm_buffer_object *bo,
int drm_gem_vram_bo_driver_verify_access(struct ttm_buffer_object *bo,
struct file *filp);
/*
* Helpers for struct drm_driver
*/
void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem);
int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file,
struct drm_device *dev,
uint32_t handle, uint64_t *offset);
#endif