drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/M0203.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/M0203.h

Extension

.h

Size

930 bytes

Lines

34

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

• No C-style include directives detected by the generator.

Detected Declarations

• struct nvbios_M0203T
• struct nvbios_M0203E

Annotated Snippet

struct nvbios_M0203T {
#define M0203T_TYPE_RAMCFG 0x00
	u8  type;
	u16 pointer;
};

u32 nvbios_M0203Te(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
u32 nvbios_M0203Tp(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
		   struct nvbios_M0203T *);

struct nvbios_M0203E {
#define M0203E_TYPE_DDR2   0x0
#define M0203E_TYPE_DDR3   0x1
#define M0203E_TYPE_GDDR3  0x2
#define M0203E_TYPE_GDDR5  0x3
#define M0203E_TYPE_HBM2   0x6
#define M0203E_TYPE_GDDR5X 0x8
#define M0203E_TYPE_GDDR6  0x9
#define M0203E_TYPE_SKIP   0xf
	u8 type;
	u8 strap;
	u8 group;
};

u32 nvbios_M0203Ee(struct nvkm_bios *, int idx, u8 *ver, u8 *hdr);
u32 nvbios_M0203Ep(struct nvkm_bios *, int idx, u8 *ver, u8 *hdr,
		   struct nvbios_M0203E *);
u32 nvbios_M0203Em(struct nvkm_bios *, u8 ramcfg, u8 *ver, u8 *hdr,
		   struct nvbios_M0203E *);
#endif

Annotation

• Detected declarations: `struct nvbios_M0203T`, `struct nvbios_M0203E`.
• 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.