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/* 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
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