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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

800 bytes

Lines

39

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

• function bmp_version
• function bmp_mem_init_table
• function bmp_sdr_seq_table
• function bmp_ddr_seq_table

Annotated Snippet

#ifndef __NVBIOS_BMP_H__
#define __NVBIOS_BMP_H__
static inline u16
bmp_version(struct nvkm_bios *bios)
{
	if (bios->bmp_offset) {
		return nvbios_rd08(bios, bios->bmp_offset + 5) << 8 |
		       nvbios_rd08(bios, bios->bmp_offset + 6);
	}

	return 0x0000;
}

static inline u16
bmp_mem_init_table(struct nvkm_bios *bios)
{
	if (bmp_version(bios) >= 0x0300)
		return nvbios_rd16(bios, bios->bmp_offset + 24);
	return 0x0000;
}

static inline u16
bmp_sdr_seq_table(struct nvkm_bios *bios)
{
	if (bmp_version(bios) >= 0x0300)
		return nvbios_rd16(bios, bios->bmp_offset + 26);
	return 0x0000;
}

static inline u16
bmp_ddr_seq_table(struct nvkm_bios *bios)
{
	if (bmp_version(bios) >= 0x0300)
		return nvbios_rd16(bios, bios->bmp_offset + 28);
	return 0x0000;
}
#endif

Annotation

• Detected declarations: `function bmp_version`, `function bmp_mem_init_table`, `function bmp_sdr_seq_table`, `function bmp_ddr_seq_table`.
• 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.