drivers/gpu/drm/nouveau/nvkm/subdev/fb/gm20b.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gm20b.c

Extension

.c

Size

1721 bytes

Lines

42

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

• priv.h
• gf100.h

Detected Declarations

• function gm20b_fb_new

Annotated Snippet

#include "priv.h"
#include "gf100.h"

/* GM20B's FB is similar to GM200, but without the ability to allocate VRAM */
static const struct nvkm_fb_func
gm20b_fb = {
	.dtor = gf100_fb_dtor,
	.oneinit = gf100_fb_oneinit,
	.init = gm200_fb_init,
	.init_page = gm200_fb_init_page,
	.intr = gf100_fb_intr,
	.sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
	.default_bigpage = 0 /* per-instance. */,
};

int
gm20b_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
{
	return gf100_fb_new_(&gm20b_fb, device, type, inst, pfb);
}

Annotation

• Immediate include surface: `priv.h`, `gf100.h`.
• Detected declarations: `function gm20b_fb_new`.
• 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.