drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h

Extension

.h

Size

2886 bytes

Lines

74

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.

• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct amdgpu_device
• struct amdgpu_bo
• struct amdgpu_gart

Annotated Snippet

struct amdgpu_gart {
	struct amdgpu_bo		*bo;
	/* CPU kmapped address of gart table */
	void				*ptr;
	unsigned			num_gpu_pages;
	unsigned			num_cpu_pages;
	unsigned			table_size;

	/* Asic default pte flags */
	uint64_t			gart_pte_flags;
};

int amdgpu_gart_table_ram_alloc(struct amdgpu_device *adev);
void amdgpu_gart_table_ram_free(struct amdgpu_device *adev);
int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev);
void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);
int amdgpu_gart_init(struct amdgpu_device *adev);
void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev);
void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
			int pages);
void amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
		     int pages, dma_addr_t *dma_addr, uint64_t flags,
		     void *dst);
void amdgpu_gart_map_gfx9_mqd(struct amdgpu_device *adev, uint64_t offset,
			int pages, dma_addr_t *dma_addr, uint64_t flags);
void amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
		      int pages, dma_addr_t *dma_addr, uint64_t flags);
void amdgpu_gart_map_vram_range(struct amdgpu_device *adev, uint64_t pa,
				uint64_t start_page, uint64_t num_pages,
				uint64_t flags, void *dst);
void amdgpu_gart_invalidate_tlb(struct amdgpu_device *adev);
#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct amdgpu_device`, `struct amdgpu_bo`, `struct amdgpu_gart`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.