drivers/gpu/drm/nouveau/nvkm/subdev/fuse/base.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/subdev/fuse/base.c

Extension

.c

Size

1802 bytes

Lines

55

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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

• priv.h

Detected Declarations

• function files
• function nvkm_fuse_dtor
• function nvkm_fuse_new_

Annotated Snippet

#include "priv.h"

u32
nvkm_fuse_read(struct nvkm_fuse *fuse, u32 addr)
{
	return fuse->func->read(fuse, addr);
}

static void *
nvkm_fuse_dtor(struct nvkm_subdev *subdev)
{
	return nvkm_fuse(subdev);
}

static const struct nvkm_subdev_func
nvkm_fuse = {
	.dtor = nvkm_fuse_dtor,
};

int
nvkm_fuse_new_(const struct nvkm_fuse_func *func, struct nvkm_device *device,
	       enum nvkm_subdev_type type, int inst, struct nvkm_fuse **pfuse)
{
	struct nvkm_fuse *fuse;
	if (!(fuse = *pfuse = kzalloc_obj(*fuse)))
		return -ENOMEM;
	nvkm_subdev_ctor(&nvkm_fuse, device, type, inst, &fuse->subdev);
	fuse->func = func;
	spin_lock_init(&fuse->lock);
	return 0;
}

Annotation

• Immediate include surface: `priv.h`.
• Detected declarations: `function files`, `function nvkm_fuse_dtor`, `function nvkm_fuse_new_`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.