sound/xen/xen_snd_front_cfg.h

File Facts

System

Linux kernel

Corpus path

sound/xen/xen_snd_front_cfg.h

Extension

.h

Size

991 bytes

Lines

47

Domain

Driver Families

Bucket

sound/xen

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

• sound/core.h
• sound/pcm.h

Detected Declarations

• struct xen_snd_front_info
• struct xen_front_cfg_stream
• struct xen_front_cfg_pcm_instance
• struct xen_front_cfg_card

Annotated Snippet

struct xen_front_cfg_stream {
	int index;
	char *xenstore_path;
	struct snd_pcm_hardware pcm_hw;
};

struct xen_front_cfg_pcm_instance {
	char name[80];
	int device_id;
	struct snd_pcm_hardware pcm_hw;
	int  num_streams_pb;
	struct xen_front_cfg_stream *streams_pb;
	int  num_streams_cap;
	struct xen_front_cfg_stream *streams_cap;
};

struct xen_front_cfg_card {
	char name_short[32];
	char name_long[80];
	struct snd_pcm_hardware pcm_hw;
	int num_pcm_instances;
	struct xen_front_cfg_pcm_instance *pcm_instances;
};

int xen_snd_front_cfg_card(struct xen_snd_front_info *front_info,
			   int *stream_cnt);

#endif /* __XEN_SND_FRONT_CFG_H */

Annotation

• Immediate include surface: `sound/core.h`, `sound/pcm.h`.
• Detected declarations: `struct xen_snd_front_info`, `struct xen_front_cfg_stream`, `struct xen_front_cfg_pcm_instance`, `struct xen_front_cfg_card`.
• Atlas domain: Driver Families / sound/xen.
• 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.