diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_ttm.h')
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_ttm.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.h b/drivers/gpu/drm/i915/gem/i915_gem_ttm.h new file mode 100644 index 000000000000..40927f67b6d9 --- /dev/null +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2021 Intel Corporation + */ +#ifndef _I915_GEM_TTM_H_ +#define _I915_GEM_TTM_H_ + +#include "gem/i915_gem_object_types.h" + +/** + * i915_gem_to_ttm - Convert a struct drm_i915_gem_object to a + * struct ttm_buffer_object. + * @obj: Pointer to the gem object. + * + * Return: Pointer to the embedded struct ttm_buffer_object. + */ +static inline struct ttm_buffer_object * +i915_gem_to_ttm(struct drm_i915_gem_object *obj) +{ + return &obj->__do_not_access; +} + +/* + * i915 ttm gem object destructor. Internal use only. + */ +void i915_ttm_bo_destroy(struct ttm_buffer_object *bo); + +/** + * i915_ttm_to_gem - Convert a struct ttm_buffer_object to an embedding + * struct drm_i915_gem_object. + * + * Return: Pointer to the embedding struct ttm_buffer_object, or NULL + * if the object was not an i915 ttm object. + */ +static inline struct drm_i915_gem_object * +i915_ttm_to_gem(struct ttm_buffer_object *bo) +{ + if (GEM_WARN_ON(bo->destroy != i915_ttm_bo_destroy)) + return NULL; + + return container_of(bo, struct drm_i915_gem_object, __do_not_access); +} + +int __i915_gem_ttm_object_init(struct intel_memory_region *mem, + struct drm_i915_gem_object *obj, + resource_size_t size, + resource_size_t page_size, + unsigned int flags); +#endif |