drivers/gpu/drm/i915/i915_ttm_buddy_manager.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/i915/i915_ttm_buddy_manager.h
Extension
.h
Size
1960 bytes
Lines
73
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct i915_ttm_buddy_resource {
	struct ttm_resource base;
	struct list_head blocks;
	unsigned long flags;
	unsigned long used_visible_size;
	struct gpu_buddy *mm;
};

/**
 * to_ttm_buddy_resource
 *
 * @res: the resource to upcast
 *
 * Upcast the struct ttm_resource object into a struct i915_ttm_buddy_resource.
 */
static inline struct i915_ttm_buddy_resource *
to_ttm_buddy_resource(struct ttm_resource *res)
{
	return container_of(res, struct i915_ttm_buddy_resource, base);
}

int i915_ttm_buddy_man_init(struct ttm_device *bdev,
			    unsigned type, bool use_tt,
			    u64 size, u64 visible_size,
			    u64 default_page_size, u64 chunk_size);
int i915_ttm_buddy_man_fini(struct ttm_device *bdev,
			    unsigned int type);

int i915_ttm_buddy_man_reserve(struct ttm_resource_manager *man,
			       u64 start, u64 size);

u64 i915_ttm_buddy_man_visible_size(struct ttm_resource_manager *man);

void i915_ttm_buddy_man_avail(struct ttm_resource_manager *man,
			      u64 *avail, u64 *avail_visible);

#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
void i915_ttm_buddy_man_force_visible_size(struct ttm_resource_manager *man,
					   u64 size);
#endif

#endif

Annotation

Implementation Notes