/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2021 Intel Corporation
*/
#ifndef _I915_GEM_TTM_H_
#define _I915_GEM_TTM_H_
#include <drm/ttm/ttm_placement.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_is_ghost_object - Check if the ttm bo is a ghost object .
* @ bo : Pointer to the ttm buffer object
*
* Return : True if the ttm bo is not a i915 object but a ghost ttm object ,
* False otherwise .
*/
static inline bool i915_ttm_is_ghost_object(struct ttm_buffer_object *bo)
{
return bo->destroy != i915_ttm_bo_destroy;
}
/**
* i915_ttm_to_gem - Convert a struct ttm_buffer_object to an embedding
* struct drm_i915_gem_object .
* @ bo : Pointer to the ttm buffer object
*
* Return : Pointer to the embedding struct drm_i915_gem_object .
*/
static inline struct drm_i915_gem_object *
i915_ttm_to_gem(struct ttm_buffer_object *bo)
{
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 offset,
resource_size_t size,
resource_size_t page_size,
unsigned int flags);
/* Internal I915 TTM declarations and definitions below. */
#define I915_PL_LMEM0 TTM_PL_PRIV
#define I915_PL_SYSTEM TTM_PL_SYSTEM
#define I915_PL_STOLEN TTM_PL_VRAM
#define I915_PL_GGTT TTM_PL_TT
struct ttm_placement *i915_ttm_sys_placement(void );
void i915_ttm_free_cached_io_rsgt(struct drm_i915_gem_object *obj);
struct i915_refct_sgt *
i915_ttm_resource_get_st(struct drm_i915_gem_object *obj,
struct ttm_resource *res);
void i915_ttm_adjust_lru(struct drm_i915_gem_object *obj);
int i915_ttm_purge(struct drm_i915_gem_object *obj);
/**
* i915_ttm_gtt_binds_lmem - Should the memory be viewed as LMEM by the GTT ?
* @ mem : struct ttm_resource representing the memory .
*
* Return : true if memory should be viewed as LMEM for GTT binding purposes ,
* false otherwise .
*/
static inline bool i915_ttm_gtt_binds_lmem(struct ttm_resource *mem)
{
return mem->mem_type != I915_PL_SYSTEM;
}
/**
* i915_ttm_cpu_maps_iomem - Should the memory be viewed as IOMEM by the CPU ?
* @ mem : struct ttm_resource representing the memory .
*
* Return : true if memory should be viewed as IOMEM for CPU mapping purposes .
*/
static inline bool i915_ttm_cpu_maps_iomem(struct ttm_resource *mem)
{
/* Once / if we support GGTT, this is also false for cached ttm_tts */
return mem && mem->mem_type != I915_PL_SYSTEM;
}
bool i915_ttm_resource_mappable(struct ttm_resource *res);
#endif
Messung V0.5 in Prozent C=92 H=100 G=95
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet am 2026-10-03)
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