include/linux/c2port.h

File Facts

System

Linux kernel

Corpus path

include/linux/c2port.h

Extension

.h

Size

1384 bytes

Lines

60

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 device
• struct c2port_ops
• struct c2port_device
• struct c2port_ops

Annotated Snippet

struct c2port_device {
	unsigned int access:1;
	unsigned int flash_access:1;

	int id;
	char name[C2PORT_NAME_LEN];
	struct c2port_ops *ops;
	struct mutex mutex;		/* prevent races during read/write */

	struct device *dev;

	void *private_data;
};

/* Basic operations */
struct c2port_ops {
	/* Flash layout */
	unsigned short block_size;	/* flash block size in bytes */
	unsigned short blocks_num;	/* flash blocks number */

	/* Enable or disable the access to C2 port */
	void (*access)(struct c2port_device *dev, int status);

	/* Set C2D data line as input/output */
	void (*c2d_dir)(struct c2port_device *dev, int dir);

	/* Read/write C2D data line */
	int (*c2d_get)(struct c2port_device *dev);
	void (*c2d_set)(struct c2port_device *dev, int status);

	/* Write C2CK clock line */
	void (*c2ck_set)(struct c2port_device *dev, int status);
};

/*
 * Exported functions
 */

extern struct c2port_device *c2port_device_register(char *name,
					struct c2port_ops *ops, void *devdata);
extern void c2port_device_unregister(struct c2port_device *dev);

Annotation

• Detected declarations: `struct device`, `struct c2port_ops`, `struct c2port_device`, `struct c2port_ops`.
• 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.