include/linux/phy_fixed.h

File Facts

System

Linux kernel

Corpus path

include/linux/phy_fixed.h

Extension

.h

Size

1117 bytes

Lines

47

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

• linux/types.h

Detected Declarations

• struct fixed_phy_status
• struct device_node
• struct net_device
• function fixed_phy_register
• function fixed_phy_unregister

Annotated Snippet

struct fixed_phy_status {
	int speed;
	int duplex;
	bool link:1;
	bool pause:1;
	bool asym_pause:1;
};

struct device_node;
struct net_device;

#if IS_ENABLED(CONFIG_FIXED_PHY)
extern int fixed_phy_change_carrier(struct net_device *dev, bool new_carrier);
struct phy_device *fixed_phy_register(const struct fixed_phy_status *status,
				      struct device_node *np);
struct phy_device *fixed_phy_register_100fd(void);

extern void fixed_phy_unregister(struct phy_device *phydev);
extern int fixed_phy_set_link_update(struct phy_device *phydev,
			int (*link_update)(struct net_device *,
					   struct fixed_phy_status *));
#else
static inline struct phy_device *
fixed_phy_register(const struct fixed_phy_status *status,
		   struct device_node *np)
{
	return ERR_PTR(-ENODEV);
}

static inline struct phy_device *fixed_phy_register_100fd(void)
{
	return ERR_PTR(-ENODEV);
}

static inline void fixed_phy_unregister(struct phy_device *phydev)
{
}
#endif /* CONFIG_FIXED_PHY */

#endif /* __PHY_FIXED_H */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct fixed_phy_status`, `struct device_node`, `struct net_device`, `function fixed_phy_register`, `function fixed_phy_unregister`.
• 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.