drivers/gpu/drm/nouveau/dispnv50/base.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/dispnv50/base.c

Extension

.c

Size

1986 bytes

Lines

54

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

• base.h
• nvif/class.h

Detected Declarations

• function files

Annotated Snippet

#include "base.h"

#include <nvif/class.h>

int
nv50_base_new(struct nouveau_drm *drm, int head, struct nv50_wndw **pwndw)
{
	struct {
		s32 oclass;
		int version;
		int (*new)(struct nouveau_drm *, int, s32, struct nv50_wndw **);
	} bases[] = {
		{ GK110_DISP_BASE_CHANNEL_DMA, 0, base917c_new },
		{ GK104_DISP_BASE_CHANNEL_DMA, 0, base917c_new },
		{ GF110_DISP_BASE_CHANNEL_DMA, 0, base907c_new },
		{ GT214_DISP_BASE_CHANNEL_DMA, 0, base827c_new },
		{ GT200_DISP_BASE_CHANNEL_DMA, 0, base827c_new },
		{   G82_DISP_BASE_CHANNEL_DMA, 0, base827c_new },
		{  NV50_DISP_BASE_CHANNEL_DMA, 0, base507c_new },
		{}
	};
	struct nv50_disp *disp = nv50_disp(drm->dev);
	int cid;

	cid = nvif_mclass(&disp->disp->object, bases);
	if (cid < 0) {
		NV_ERROR(drm, "No supported base class\n");
		return cid;
	}

	return bases[cid].new(drm, head, bases[cid].oclass, pwndw);
}

Annotation

• Immediate include surface: `base.h`, `nvif/class.h`.
• Detected declarations: `function files`.
• 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.