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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

2074 bytes

Lines

58

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_pci
• enum nvkm_pcie_speed

Annotated Snippet

struct nvkm_pci {
	const struct nvkm_pci_func *func;
	struct nvkm_subdev subdev;
	struct pci_dev *pdev;

	struct {
		struct agp_bridge_data *bridge;
		u32 mode;
		u64 base;
		u64 size;
		int mtrr;
		bool cma;
		bool acquired;
	} agp;

	struct {
		enum nvkm_pcie_speed speed;
		u8 width;
	} pcie;

	bool msi;
};

u32 nvkm_pci_rd32(struct nvkm_pci *, u16 addr);
void nvkm_pci_wr08(struct nvkm_pci *, u16 addr, u8 data);
void nvkm_pci_wr32(struct nvkm_pci *, u16 addr, u32 data);
u32 nvkm_pci_mask(struct nvkm_pci *, u16 addr, u32 mask, u32 value);
void nvkm_pci_rom_shadow(struct nvkm_pci *, bool shadow);
void nvkm_pci_msi_rearm(struct nvkm_device *);

int nv04_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int nv40_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int nv46_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int nv4c_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int g84_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int g92_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int g94_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int gf100_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int gf106_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int gk104_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int gp100_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);
int gh100_pci_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_pci **);

/* pcie functions */
int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width);
#endif

Annotation

• Immediate include surface: `core/subdev.h`.
• Detected declarations: `struct nvkm_pci`, `enum nvkm_pcie_speed`.
• 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.