drivers/gpu/drm/nouveau/include/nvkm/subdev/bios.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/include/nvkm/subdev/bios.h

Extension

.h

Size

818 bytes

Lines

36

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/subdev.h

Detected Declarations

• struct nvkm_bios

Annotated Snippet

struct nvkm_bios {
	struct nvkm_subdev subdev;
	u32 size;
	u8 *data;

	u32 image0_size;
	u32 imaged_addr;

	u32 bmp_offset;
	u32 bit_offset;

	struct {
		u8 major;
		u8 chip;
		u8 minor;
		u8 micro;
		u8 patch;
	} version;
};

u8  nvbios_checksum(const u8 *data, int size);
u16 nvbios_findstr(const u8 *data, int size, const char *str, int len);
int nvbios_memcmp(struct nvkm_bios *, u32 addr, const char *, u32 len);
u8  nvbios_rd08(struct nvkm_bios *, u32 addr);
u16 nvbios_rd16(struct nvkm_bios *, u32 addr);
u32 nvbios_rd32(struct nvkm_bios *, u32 addr);
void *nvbios_pointer(struct nvkm_bios *, u32 addr);

int nvkm_bios_new(struct nvkm_device *, enum nvkm_subdev_type, int, struct nvkm_bios **);
#endif

Annotation

• Immediate include surface: `core/subdev.h`.
• Detected declarations: `struct nvkm_bios`.
• 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.