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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

1544 bytes

Lines

69

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 dcb_output
• struct sor_conf
• enum dcb_output_type

Annotated Snippet

struct dcb_output {
	int index;	/* may not be raw dcb index if merging has happened */
	u16 hasht;
	u16 hashm;
	enum dcb_output_type type;
	uint8_t i2c_index;
	uint8_t heads;
	uint8_t connector;
	uint8_t bus;
	uint8_t location;
	uint8_t or;
	uint8_t link;
	bool duallink_possible;
	uint8_t extdev;
	union {
		struct sor_conf {
			int link;
		} sorconf;
		struct {
			int maxfreq;
		} crtconf;
		struct {
			struct sor_conf sor;
			bool use_straps_for_mode;
			bool use_acpi_for_edid;
			bool use_power_scripts;
		} lvdsconf;
		struct {
			bool has_component_output;
		} tvconf;
		struct {
			struct sor_conf sor;
			int link_nr;
			int link_bw;
		} dpconf;
		struct {
			struct sor_conf sor;
			int slave_addr;
		} tmdsconf;
	};
	bool i2c_upper_default;
	int id;
};

u16 dcb_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *ent, u8 *len);
u16 dcb_outp(struct nvkm_bios *, u8 idx, u8 *ver, u8 *len);
u16 dcb_outp_parse(struct nvkm_bios *, u8 idx, u8 *, u8 *,
		   struct dcb_output *);
u16 dcb_outp_match(struct nvkm_bios *, u16 type, u16 mask, u8 *, u8 *,
		   struct dcb_output *);
int dcb_outp_foreach(struct nvkm_bios *, void *data, int (*exec)
		     (struct nvkm_bios *, void *, int index, u16 entry));
#endif

Annotation

• Detected declarations: `struct dcb_output`, `struct sor_conf`, `enum dcb_output_type`.
• 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.