drivers/gpu/drm/nouveau/nvkm/subdev/mmu/umem.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/umem.h

Extension

.h

Size

480 bytes

Lines

26

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

• core/object.h
• mem.h

Detected Declarations

• struct nvkm_umem

Annotated Snippet

struct nvkm_umem {
	struct nvkm_object object;
	struct nvkm_mmu *mmu;
	u8 type:8;
	bool mappable:1;
	bool io:1;

	struct nvkm_memory *memory;
	struct list_head head;

	union {
		struct nvkm_vma *bar;
		void *map;
	};
};

int nvkm_umem_new(const struct nvkm_oclass *, void *argv, u32 argc,
		  struct nvkm_object **);
#endif

Annotation

• Immediate include surface: `core/object.h`, `mem.h`.
• Detected declarations: `struct nvkm_umem`.
• 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.