arch/sh/include/mach-dreamcast/mach/dma.h

File Facts

System

Linux kernel

Corpus path

arch/sh/include/mach-dreamcast/mach/dma.h

Extension

.h

Size

702 bytes

Lines

30

Domain

Architecture Layer

Bucket

arch/sh

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_SH_DREAMCAST_DMA_H
#define __ASM_SH_DREAMCAST_DMA_H

/* Number of DMA channels */
#define G2_NR_DMA_CHANNELS	4

/* Channels for cascading */
#define PVR2_CASCADE_CHAN	2
#define G2_CASCADE_CHAN		3

/* PVR2 DMA Registers */
#define PVR2_DMA_BASE		0xa05f6800
#define PVR2_DMA_ADDR		(PVR2_DMA_BASE + 0)
#define PVR2_DMA_COUNT		(PVR2_DMA_BASE + 4)
#define PVR2_DMA_MODE		(PVR2_DMA_BASE + 8)
#define PVR2_DMA_LMMODE0	(PVR2_DMA_BASE + 132)
#define PVR2_DMA_LMMODE1	(PVR2_DMA_BASE + 136)

/* G2 DMA Register */
#define G2_DMA_BASE		0xa05f7800

#endif /* __ASM_SH_DREAMCAST_DMA_H */

Annotation

• Atlas domain: Architecture Layer / arch/sh.
• 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.