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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

990 bytes

Lines

45

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_perfE
• struct nvbios_perfS
• struct nvbios_perf_fan

Annotated Snippet

struct nvbios_perfE {
	u8  pstate;
	u8  fanspeed;
	u8  voltage;
	u32 core;
	u32 shader;
	u32 memory;
	u32 vdec;
	u32 disp;
	u32 script;
	u8  pcie_speed;
	u8  pcie_width;
};

u32 nvbios_perf_entry(struct nvkm_bios *, int idx,
		      u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
u32 nvbios_perfEp(struct nvkm_bios *, int idx,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_perfE *);

struct nvbios_perfS {
	union {
		struct {
			u32 freq;
		} v40;
	};
};

u32 nvbios_perfSe(struct nvkm_bios *, u32 data, int idx,
		  u8 *ver, u8 *hdr, u8 cnt, u8 len);
u32 nvbios_perfSp(struct nvkm_bios *, u32 data, int idx,
		  u8 *ver, u8 *hdr, u8 cnt, u8 len, struct nvbios_perfS *);

struct nvbios_perf_fan {
	u32 pwm_divisor;
};

int nvbios_perf_fan_parse(struct nvkm_bios *, struct nvbios_perf_fan *);
#endif

Annotation

• Detected declarations: `struct nvbios_perfE`, `struct nvbios_perfS`, `struct nvbios_perf_fan`.
• 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.