drivers/gpu/drm/nouveau/include/nvif/fifo.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/include/nvif/fifo.h

Extension

.h

Size

583 bytes

Lines

19

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

• nvif/device.h

Detected Declarations

• function nvif_fifo_runlist_ce

Annotated Snippet

#ifndef __NVIF_FIFO_H__
#define __NVIF_FIFO_H__
#include <nvif/device.h>

/* Returns mask of runlists that support a NV_DEVICE_INFO_RUNLIST_ENGINES_* type. */
u64 nvif_fifo_runlist(struct nvif_device *, u64 engine);

/* CE-supporting runlists (excluding GRCE, if others exist). */
static inline u64
nvif_fifo_runlist_ce(struct nvif_device *device)
{
	u64 runmgr = nvif_fifo_runlist(device, NV_DEVICE_HOST_RUNLIST_ENGINES_GR);
	u64 runmce = nvif_fifo_runlist(device, NV_DEVICE_HOST_RUNLIST_ENGINES_CE);
	if (runmce && !(runmce &= ~runmgr))
		runmce = runmgr;
	return runmce;
}
#endif

Annotation

• Immediate include surface: `nvif/device.h`.
• Detected declarations: `function nvif_fifo_runlist_ce`.
• 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.