drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp100.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp100.c

Extension

.c

Size

2263 bytes

Lines

64

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
• ram.h
• core/memory.h

Detected Declarations

• function files
• function gp100_fb_init_remapper
• function gp100_fb_new

Annotated Snippet

#include "gf100.h"
#include "ram.h"

#include <core/memory.h>

void
gp100_fb_init_unkn(struct nvkm_fb *base)
{
	struct nvkm_device *device = gf100_fb(base)->base.subdev.device;
	nvkm_wr32(device, 0x1fac80, nvkm_rd32(device, 0x100c80));
	nvkm_wr32(device, 0x1facc4, nvkm_rd32(device, 0x100cc4));
	nvkm_wr32(device, 0x1facc8, nvkm_rd32(device, 0x100cc8));
	nvkm_wr32(device, 0x1faccc, nvkm_rd32(device, 0x100ccc));
}

void
gp100_fb_init_remapper(struct nvkm_fb *fb)
{
	struct nvkm_device *device = fb->subdev.device;
	/* Disable address remapper. */
	nvkm_mask(device, 0x100c14, 0x00040000, 0x00000000);
}

static const struct nvkm_fb_func
gp100_fb = {
	.dtor = gf100_fb_dtor,
	.oneinit = gf100_fb_oneinit,
	.init = gm200_fb_init,
	.init_remapper = gp100_fb_init_remapper,
	.init_page = gm200_fb_init_page,
	.init_unkn = gp100_fb_init_unkn,
	.sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
	.ram_new = gp100_ram_new,
};

int
gp100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
{
	return gf100_fb_new_(&gp100_fb, device, type, inst, pfb);
}

Annotation

• Immediate include surface: `gf100.h`, `ram.h`, `core/memory.h`.
• Detected declarations: `function files`, `function gp100_fb_init_remapper`, `function gp100_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.