107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2021 Intel Corporation
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*/
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#ifndef _I915_GEM_TTM_H_
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#define _I915_GEM_TTM_H_
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#include <drm/ttm/ttm_placement.h>
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#include "gem/i915_gem_object_types.h"
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/**
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* i915_gem_to_ttm - Convert a struct drm_i915_gem_object to a
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* struct ttm_buffer_object.
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* @obj: Pointer to the gem object.
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*
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* Return: Pointer to the embedded struct ttm_buffer_object.
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*/
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static inline struct ttm_buffer_object *
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i915_gem_to_ttm(struct drm_i915_gem_object *obj)
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{
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return &obj->__do_not_access;
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}
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/*
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* i915 ttm gem object destructor. Internal use only.
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*/
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void i915_ttm_bo_destroy(struct ttm_buffer_object *bo);
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/**
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* i915_ttm_is_ghost_object - Check if the ttm bo is a ghost object.
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* @bo: Pointer to the ttm buffer object
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*
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* Return: True if the ttm bo is not a i915 object but a ghost ttm object,
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* False otherwise.
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*/
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static inline bool i915_ttm_is_ghost_object(struct ttm_buffer_object *bo)
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{
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return bo->destroy != i915_ttm_bo_destroy;
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}
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/**
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* i915_ttm_to_gem - Convert a struct ttm_buffer_object to an embedding
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* struct drm_i915_gem_object.
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*
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* Return: Pointer to the embedding struct ttm_buffer_object.
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*/
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static inline struct drm_i915_gem_object *
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i915_ttm_to_gem(struct ttm_buffer_object *bo)
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{
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return container_of(bo, struct drm_i915_gem_object, __do_not_access);
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}
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int __i915_gem_ttm_object_init(struct intel_memory_region *mem,
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struct drm_i915_gem_object *obj,
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resource_size_t offset,
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resource_size_t size,
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resource_size_t page_size,
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unsigned int flags);
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/* Internal I915 TTM declarations and definitions below. */
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#define I915_PL_LMEM0 TTM_PL_PRIV
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#define I915_PL_SYSTEM TTM_PL_SYSTEM
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#define I915_PL_STOLEN TTM_PL_VRAM
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#define I915_PL_GGTT TTM_PL_TT
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struct ttm_placement *i915_ttm_sys_placement(void);
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void i915_ttm_free_cached_io_rsgt(struct drm_i915_gem_object *obj);
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struct i915_refct_sgt *
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i915_ttm_resource_get_st(struct drm_i915_gem_object *obj,
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struct ttm_resource *res);
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void i915_ttm_adjust_lru(struct drm_i915_gem_object *obj);
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int i915_ttm_purge(struct drm_i915_gem_object *obj);
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/**
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* i915_ttm_gtt_binds_lmem - Should the memory be viewed as LMEM by the GTT?
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* @mem: struct ttm_resource representing the memory.
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*
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* Return: true if memory should be viewed as LMEM for GTT binding purposes,
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* false otherwise.
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*/
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static inline bool i915_ttm_gtt_binds_lmem(struct ttm_resource *mem)
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{
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return mem->mem_type != I915_PL_SYSTEM;
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}
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/**
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* i915_ttm_cpu_maps_iomem - Should the memory be viewed as IOMEM by the CPU?
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* @mem: struct ttm_resource representing the memory.
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*
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* Return: true if memory should be viewed as IOMEM for CPU mapping purposes.
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*/
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static inline bool i915_ttm_cpu_maps_iomem(struct ttm_resource *mem)
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{
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/* Once / if we support GGTT, this is also false for cached ttm_tts */
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return mem && mem->mem_type != I915_PL_SYSTEM;
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}
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bool i915_ttm_resource_mappable(struct ttm_resource *res);
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#endif
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