drivers/gpu/drm/nouveau/nvkm/engine/nvdec/ga102.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/engine/nvdec/ga102.c

Extension

.c

Size

2046 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

• priv.h
• subdev/gsp.h

Detected Declarations

• function ga102_nvdec_nofw
• function ga102_nvdec_new

Annotated Snippet

#include "priv.h"

#include <subdev/gsp.h>

static const struct nvkm_falcon_func
ga102_nvdec_flcn = {
	.disable = gm200_flcn_disable,
	.enable = gm200_flcn_enable,
	.addr2 = 0x1c00,
	.reset_pmc = true,
	.reset_prep = ga102_flcn_reset_prep,
	.reset_wait_mem_scrubbing = ga102_flcn_reset_wait_mem_scrubbing,
	.imem_dma = &ga102_flcn_dma,
	.dmem_dma = &ga102_flcn_dma,
};

static const struct nvkm_nvdec_func
ga102_nvdec = {
	.flcn = &ga102_nvdec_flcn,
};

static int
ga102_nvdec_nofw(struct nvkm_nvdec *nvdec, int ver, const struct nvkm_nvdec_fwif *fwif)
{
	return 0;
}

static const struct nvkm_nvdec_fwif
ga102_nvdec_fwif[] = {
	{ -1, ga102_nvdec_nofw, &ga102_nvdec },
	{}
};

int
ga102_nvdec_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
		struct nvkm_nvdec **pnvdec)
{
	if (nvkm_gsp_rm(device->gsp))
		return -ENODEV;

	return nvkm_nvdec_new_(ga102_nvdec_fwif, device, type, inst, 0x848000, pnvdec);
}

Annotation

• Immediate include surface: `priv.h`, `subdev/gsp.h`.
• Detected declarations: `function ga102_nvdec_nofw`, `function ga102_nvdec_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.