drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/nvdec.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/nvdec.c

Extension

.c

Size

645 bytes

Lines

34

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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• engine.h
• engine/nvdec.h

Detected Declarations

• function Copyright
• function nvkm_rm_nvdec_new

Annotated Snippet

#include "engine.h"
#include <engine/nvdec.h>

static void *
nvkm_rm_nvdec_dtor(struct nvkm_engine *engine)
{
	return container_of(engine, struct nvkm_nvdec, engine);
}

int
nvkm_rm_nvdec_new(struct nvkm_rm *rm, int inst)
{
	struct nvkm_nvdec *nvdec;
	int ret;

	nvdec = kzalloc_obj(*nvdec);
	if (!nvdec)
		return -ENOMEM;

	ret = nvkm_rm_engine_ctor(nvkm_rm_nvdec_dtor, rm, NVKM_ENGINE_NVDEC, inst,
				  &rm->gpu->nvdec.class, 1, &nvdec->engine);
	if (ret) {
		kfree(nvdec);
		return ret;
	}

	rm->device->nvdec[inst] = nvdec;
	return 0;
}

Annotation

• Immediate include surface: `engine.h`, `engine/nvdec.h`.
• Detected declarations: `function Copyright`, `function nvkm_rm_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.