include/linux/platform_data/edma.h

File Facts

System

Linux kernel

Corpus path

include/linux/platform_data/edma.h

Extension

.h

Size

2577 bytes

Lines

85

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

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

Detected Declarations

• struct edma_rsv_info
• struct dma_slave_map
• struct edma_soc_info
• enum dma_event_q

Annotated Snippet

struct edma_rsv_info {

	const s16	(*rsv_chans)[2];
	const s16	(*rsv_slots)[2];
};

struct dma_slave_map;

/* platform_data for EDMA driver */
struct edma_soc_info {
	/*
	 * Default queue is expected to be a low-priority queue.
	 * This way, long transfers on the default queue started
	 * by the codec engine will not cause audio defects.
	 */
	enum dma_event_q	default_queue;

	/* Resource reservation for other cores */
	struct edma_rsv_info	*rsv;

	/* List of channels allocated for memcpy, terminated with -1 */
	s32			*memcpy_channels;

	s8	(*queue_priority_mapping)[2];
	const s16	(*xbar_chans)[2];

	const struct dma_slave_map *slave_map;
	int slavecnt;
};

#endif

Annotation

• Detected declarations: `struct edma_rsv_info`, `struct dma_slave_map`, `struct edma_soc_info`, `enum dma_event_q`.
• Atlas domain: Core OS / Core Kernel Interface.
• 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.