mdio.h File Reference

Narrow Clause22 station management with absolute deadlines. More...

#include "nexus/core/time.h"

Go to the source code of this file.

Data Structures
struct	nx_mdio_ops_t
struct	nx_mdio_port_t

Functions
nx_result_t	nx_mdio_read (const nx_mdio_port_t *port, uint8_t address, uint8_t reg, uint16_t *value, nx_time_us_t deadline)
	Read one Clause22 PHY register without retaining output storage.
nx_result_t	nx_mdio_write (const nx_mdio_port_t *port, uint8_t address, uint8_t reg, uint16_t value, nx_time_us_t deadline)
	Write one Clause22 PHY register, not a PHY-specific policy sequence.

Detailed Description

Narrow Clause22 station management with absolute deadlines.

Author

Nexus Team

Definition in file mdio.h.

Function Documentation

nx_mdio_read()

nx_result_t nx_mdio_read	(	const nx_mdio_port_t *	port,
		uint8_t	address,
		uint8_t	reg,
		uint16_t *	value,
		nx_time_us_t	deadline )

Read one Clause22 PHY register without retaining output storage.

Parameters

[in]	port	Stable face and caller-owned execution context.
[in]	address	Clause22 PHY address, from 0 through 31.
[in]	reg	Clause22 register address, from 0 through 31.
[out]	value	Written only after timely observed completion.
[in]	deadline	Finite absolute provider-clock deadline.

Returns

Success, BUSY without a new command, or timeout/input/context error.

Note

Serialized privileged task, incoming masks clear; finite absolute deadline in the provider clock. Address and register are 0..31. BUSY rejects before new MMIO effects; timeout does not pretend busy cleared.

nx_mdio_write()

nx_result_t nx_mdio_write	(	const nx_mdio_port_t *	port,
		uint8_t	address,
		uint8_t	reg,
		uint16_t	value,
		nx_time_us_t	deadline )

Write one Clause22 PHY register, not a PHY-specific policy sequence.

Parameters

[in]	port	Stable face and caller-owned execution context.
[in]	address	Clause22 PHY address, from 0 through 31.
[in]	reg	Clause22 register address, from 0 through 31.
[in]	value	Exact 16-bit register value.
[in]	deadline	Finite absolute provider-clock deadline.

Returns

Success, BUSY without a new command, or timeout/input/context error.

Note

Same task/deadline rules as read. No IRQ-masked busy wait or fallback.