drivers/media/pci/mgb4/mgb4_dma.h

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/mgb4/mgb4_dma.h

Extension

.h

Size

460 bytes

Lines

19

Domain

Driver Families

Bucket

drivers/media

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

• mgb4_core.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef __MGB4_DMA_H__
#define __MGB4_DMA_H__

#include "mgb4_core.h"

int mgb4_dma_channel_init(struct mgb4_dev *mgbdev);
void mgb4_dma_channel_free(struct mgb4_dev *mgbdev);

int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write,
		      u64 paddr, struct sg_table *sgt);

#endif

Annotation

• Immediate include surface: `mgb4_core.h`.
• Atlas domain: Driver Families / drivers/media.
• 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.