include/linux/fsl/enetc_mdio.h

File Facts

System

Linux kernel

Corpus path

include/linux/fsl/enetc_mdio.h

Extension

.h

Size

2094 bytes

Lines

69

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/phy.h

Detected Declarations

• struct enetc_hw
• struct enetc_mdio_priv
• enum enetc_pcs_speed
• function enetc_mdio_read_c22
• function enetc_mdio_write_c22
• function enetc_mdio_read_c45
• function enetc_mdio_write_c45

Annotated Snippet

struct enetc_mdio_priv {
	struct enetc_hw *hw;
	int mdio_base;
};

#if IS_REACHABLE(CONFIG_FSL_ENETC_MDIO)

int enetc_mdio_read_c22(struct mii_bus *bus, int phy_id, int regnum);
int enetc_mdio_write_c22(struct mii_bus *bus, int phy_id, int regnum,
			 u16 value);
int enetc_mdio_read_c45(struct mii_bus *bus, int phy_id, int devad, int regnum);
int enetc_mdio_write_c45(struct mii_bus *bus, int phy_id, int devad, int regnum,
			 u16 value);
struct enetc_hw *enetc_hw_alloc(struct device *dev, void __iomem *port_regs);

#else

static inline int enetc_mdio_read_c22(struct mii_bus *bus, int phy_id,
				      int regnum)
{ return -EINVAL; }
static inline int enetc_mdio_write_c22(struct mii_bus *bus, int phy_id,
				       int regnum, u16 value)
{ return -EINVAL; }
static inline int enetc_mdio_read_c45(struct mii_bus *bus, int phy_id,
				      int devad, int regnum)
{ return -EINVAL; }
static inline int enetc_mdio_write_c45(struct mii_bus *bus, int phy_id,
				       int devad, int regnum, u16 value)
{ return -EINVAL; }
static inline struct enetc_hw *enetc_hw_alloc(struct device *dev,
					      void __iomem *port_regs)
{ return ERR_PTR(-EINVAL); }

#endif

#endif

Annotation

• Immediate include surface: `linux/phy.h`.
• Detected declarations: `struct enetc_hw`, `struct enetc_mdio_priv`, `enum enetc_pcs_speed`, `function enetc_mdio_read_c22`, `function enetc_mdio_write_c22`, `function enetc_mdio_read_c45`, `function enetc_mdio_write_c45`.
• 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.