Ethernet PHY Media Access Controller

See gmac_quickstart.

Driver for the GMAC PHY (Ethernet Media Access Controller). This file contains basic functions for the GMAC PHY.

Dependencies

This driver does not depend on other modules.

Functions
uint8_t	gmac_phy_read (Gmac *p_gmac, uint8_t uc_phy_address, uint8_t uc_address, uint32_t *p_value)
	Read the PHY register. More...
static uint8_t	gmac_phy_wait (Gmac *p_gmac, const uint32_t ul_retry)
	Wait PHY operation to be completed. More...
uint8_t	gmac_phy_write (Gmac *p_gmac, uint8_t uc_phy_address, uint8_t uc_address, uint32_t ul_value)
	Write the PHY register. More...

uint8_t gmac_phy_read	(	Gmac *	p_gmac,
		uint8_t	uc_phy_address,
		uint8_t	uc_address,
		uint32_t *	p_value
	)

Read the PHY register.

Parameters

p_gmac	Pointer to the GMAC instance.
uc_phy_address	PHY address.
uc_address	Register address.
p_value	Pointer to a 32-bit location to store read data.

GMAC_OK if successfully, GMAC_TIMEOUT if timeout.

References gmac_get_phy_data(), gmac_maintain_phy(), GMAC_OK, gmac_phy_wait(), GMAC_TIMEOUT, and MAC_PHY_RETRY_MAX.

Referenced by ethernet_phy_auto_negotiate(), ethernet_phy_find_valid(), ethernet_phy_reset(), and ethernet_phy_set_link().

static uint8_t gmac_phy_wait ( Gmac *  p_gmac, const uint32_t  ul_retry  )

static

Wait PHY operation to be completed.

Parameters

p_gmac	HW controller address.
ul_retry	The retry times.

Return GMAC_OK if the operation is completed successfully.

References gmac_is_phy_idle(), GMAC_OK, and GMAC_TIMEOUT.

Referenced by gmac_phy_read(), and gmac_phy_write().

uint8_t gmac_phy_write	(	Gmac *	p_gmac,
		uint8_t	uc_phy_address,
		uint8_t	uc_address,
		uint32_t	ul_value
	)

Write the PHY register.

Parameters

p_gmac	Pointer to the GMAC instance.
uc_phy_address	PHY Address.
uc_address	Register Address.
ul_value	Data to write, actually 16-bit data.

GMAC_OK if successfully, GMAC_TIMEOUT if timeout.

References gmac_maintain_phy(), GMAC_OK, gmac_phy_wait(), GMAC_TIMEOUT, and MAC_PHY_RETRY_MAX.

Referenced by ethernet_phy_auto_negotiate(), and ethernet_phy_reset().