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

File Facts

System

Linux kernel

Corpus path

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

Extension

.c

Size

1630 bytes

Lines

43

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

• gf100.h

Detected Declarations

• function gm20b_bar_new

Annotated Snippet

#include "gf100.h"

static const struct nvkm_bar_func
gm20b_bar_func = {
	.dtor = gf100_bar_dtor,
	.oneinit = gf100_bar_oneinit,
	.bar1.init = gf100_bar_bar1_init,
	.bar1.wait = gm107_bar_bar1_wait,
	.bar1.vmm = gf100_bar_bar1_vmm,
	.flush = g84_bar_flush,
};

int
gm20b_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
	      struct nvkm_bar **pbar)
{
	int ret = gf100_bar_new_(&gm20b_bar_func, device, type, inst, pbar);
	if (ret == 0)
		(*pbar)->iomap_uncached = true;
	return ret;
}

Annotation

• Immediate include surface: `gf100.h`.
• Detected declarations: `function gm20b_bar_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.