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drm/ttm: Provide ttm_bo_global_{init/release}() for struct ttm_bo_global 

So far, struct ttm_bo_global_ref was the only way of initializing a struct
ttm_bo_global. Providing separate initializer and release functions for
struct ttm_bo_global gives drivers the option of implementing their own
init and release callbacks for drm_global_references of type
DRM_GLOBAL_TTM_BO.

The original functions for initializing and releasing via struct
ttm_bo_global_ref are wrappers around the new interfaces.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Thomas Zimmermann 2018-10-16 10:04:09 +02:00 committed by Alex Deucher
parent e55a5c9b5f
commit 105f20706f
2 changed files with 48 additions and 21 deletions
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16
drivers/gpu/drm/ttm/ttm_bo.c
View File

@ -1522,26 +1522,22 @@ static void ttm_bo_global_kobj_release(struct kobject *kobj)
kfree(glob);
}
void ttm_bo_global_ref_release(struct drm_global_reference *ref)
void ttm_bo_global_release(struct ttm_bo_global *glob)
{
struct ttm_bo_global *glob = ref->object;
kobject_del(&glob->kobj);
kobject_put(&glob->kobj);
}
EXPORT_SYMBOL(ttm_bo_global_ref_release);
EXPORT_SYMBOL(ttm_bo_global_release);
int ttm_bo_global_ref_init(struct drm_global_reference *ref)
int ttm_bo_global_init(struct ttm_bo_global *glob,
struct ttm_mem_global *mem_glob)
{
struct ttm_bo_global_ref *bo_ref =
container_of(ref, struct ttm_bo_global_ref, ref);
struct ttm_bo_global *glob = ref->object;
int ret;
unsigned i;
mutex_init(&glob->device_list_mutex);
spin_lock_init(&glob->lru_lock);
glob->mem_glob = bo_ref->mem_glob;
glob->mem_glob = mem_glob;
glob->mem_glob->bo_glob = glob;
glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32);
@ -1564,7 +1560,7 @@ out_no_drp:
kfree(glob);
return ret;
}
EXPORT_SYMBOL(ttm_bo_global_ref_init);
EXPORT_SYMBOL(ttm_bo_global_init);
int ttm_bo_device_release(struct ttm_bo_device *bdev)

53
include/drm/ttm/ttm_bo_driver.h
View File

@ -384,15 +384,6 @@ struct ttm_bo_driver {
void *buf, int len, int write);
};
/**
* struct ttm_bo_global_ref - Argument to initialize a struct ttm_bo_global.
*/
struct ttm_bo_global_ref {
struct drm_global_reference ref;
struct ttm_mem_global *mem_glob;
};
/**
* struct ttm_bo_global - Buffer object driver global data.
*
@ -578,8 +569,9 @@ void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem);
void ttm_bo_mem_put_locked(struct ttm_buffer_object *bo,
struct ttm_mem_reg *mem);
void ttm_bo_global_ref_release(struct drm_global_reference *ref);
int ttm_bo_global_ref_init(struct drm_global_reference *ref);
void ttm_bo_global_release(struct ttm_bo_global *glob);
int ttm_bo_global_init(struct ttm_bo_global *glob,
struct ttm_mem_global *mem_glob);
int ttm_bo_device_release(struct ttm_bo_device *bdev);
@ -897,4 +889,43 @@ pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp);
extern const struct ttm_mem_type_manager_func ttm_bo_manager_func;
/**
* struct ttm_bo_global_ref - Argument to initialize a struct ttm_bo_global.
*/
struct ttm_bo_global_ref {
struct drm_global_reference ref;
struct ttm_mem_global *mem_glob;
};
/**
* ttm_bo_global_ref_init
*
* @ref: DRM global reference
*
* Helper function that initializes a struct ttm_bo_global. This function
* is used as init call-back function for DRM global references of type
* DRM_GLOBAL_TTM_BO_REF.
*/
static inline int ttm_bo_global_ref_init(struct drm_global_reference *ref)
{
struct ttm_bo_global_ref *bo_ref =
container_of(ref, struct ttm_bo_global_ref, ref);
return ttm_bo_global_init(ref->object, bo_ref->mem_glob);
}
/**
* ttm_bo_global_ref_release
*
* @ref: DRM global reference
*
* Helper function that releases a struct ttm_bo_global. This function
* is used as release call-back function for DRM global references of type
* DRM_GLOBAL_TTM_BO_REF.
*/
static inline void ttm_bo_global_ref_release(struct drm_global_reference *ref)
{
ttm_bo_global_release(ref->object);
}
#endif