Interface definition for MII/RMII h. More...

Detailed Description

Interface definition for MII/RMII h.

Author: Marian Buschsieweke maria.nosp@m.n.bu.nosp@m.schsi.nosp@m.ewek.nosp@m.e@ovg.nosp@m.u.de

Definition in file mii.h.

#include <stdbool.h>
#include <stdint.h>
#include "bitarithm.h"

Include dependency graph for mii.h:

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Functions
static bool	mii_can_100_mbps_full_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 100 Mbps at full duplex. More...

static bool	mii_can_100_mbps_half_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 100 Mbps at half duplex. More...

static bool	mii_can_10_mbps_full_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 10 Mbps at full duplex. More...

static bool	mii_can_10_mbps_half_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 10 Mbps at half duplex. More...

Common MII Management Register Set
All registers except MII_BMCR and MII_BMSR are extended registers. Support for extended registers is indicated by the MII_BMSR_EXTENDED bit in the MII_BMSR register.
#define	MII_BMCR (0x00U)
	Basic mode control register.

#define	MII_BMSR (0x01U)
	Basic mode status register.

#define	MII_PHYID1 (0x02U)
	PHY Identifier 1.

#define	MII_PHYID2 (0x03U)
	PHY Identifier 2.

#define	MII_ADVERTISE (0x04U)
	Auto-Negotiation Advertisement.

#define	MII_LPA (0x05U)
	Link Parter Abilities.

#define	MII_EXPANSION (0x06U)
	Auto-Negotiation Expansion.

#define	MII_ESTATUS (0x0fU)
	Extended Status Register.

Bits in the MII Basic Mode Control Register
#define	MII_BMCR_RESET BIT15
	Set to perform PHY reset.

#define	MII_BMCR_LOOP BIT14
	Set to enable loopback mode.

#define	MII_BMCR_AN_ENABLE BIT12
	Set to enable auto-negotiation.

#define	MII_BMCR_POWER_DOWN BIT11
	Set to power down PHY.

#define	MII_BMCR_ISOLATE BIT10
	Set to electrically isolate PHY from MII (PHY becomes inoperational)

#define	MII_BMCR_AN_RESTART BIT9
	Set to restart auto-negotiation.

#define	MII_BMCR_FULL_DPLX BIT8
	Set for full duplex.

#define	MII_BMCR_HALF_DPLX (0)
	Set for half duplex.

#define	MII_BMCR_COLL_TEST BIT7
	Set to enable collision signal test.

#define	MII_BMCR_SPEED_10 (0)
	Set speed to 10 Mbps.

#define	MII_BMCR_SPEED_100 BIT13
	Set speed to 100 Mbps.

#define	MII_BMCR_SPEED_1000 BIT6
	Set speed to 1 Gbps.

Bits in the MII Basic Mode Status Register
#define	MII_BMSR_100_T4 BIT15
	PHY supports 100BASE-T4 (half-duplex)

#define	MII_BMSR_100_TX_F BIT14
	PHY supports 100BASE-TX, full duplex.

#define	MII_BMSR_100_TX_H BIT13
	PHY supports 100BASE-TX, half duplex.

#define	MII_BMSR_10_F BIT12
	PHY supports 10BASE-T, full duplex.

#define	MII_BMSR_10_H BIT11
	PHY supports 10BASE-T, half duplex.

#define	MII_BMSR_100_T2_F BIT10
	PHY supports 100BASE-T2, full duplex.

#define	MII_BMSR_100_T2_H BIT9
	PHY supports 100BASE-T2, half duplex.

#define	MII_BMSR_ESTATUS BIT8
	Set, if MII_ESTATUS is available.

#define	MII_BMSR_AN_DONE BIT5
	Set when auto-negotiation is done.

#define	MII_BMSR_FAULT BIT4
	Set when remote fault condition is detected.

#define	MII_BMSR_HAS_AN BIT3
	Set if PHY can auto-negotiate.

#define	MII_BMSR_LINK BIT2
	Set if link is up.

#define	MII_BMSR_JABBER BIT1
	Set when jabber condition detected.

#define	MII_BMSR_EXTENDED BIT0
	Extended MII registers available.

Bits in the MII Extended Mode Advertisement Register
#define	MII_ADVERTISE_100_F BIT8
	Advertise 100BASE-T, full duplex.

#define	MII_ADVERTISE_100_H BIT7
	Advertise 100BASE-T, half duplex.

#define	MII_ADVERTISE_10_F BIT6
	Advertise 10BASE-T, full duplex.

#define	MII_ADVERTISE_10_H BIT5
	Advertise 10BASE-T, half duplex.

#define	MII_ADVERTISE_100 (BIT7 \| BIT8)
	Advertise 100BASE-T.

#define	MII_ADVERTISE_10 (BIT5 \| BIT6)
	Advertise 10BASE-T.

#define	MII_LPA_100_F BIT8
	Partner can 100BASE-T, full duplex.

#define	MII_LPA_100_H BIT7
	Partner can 100BASE-T, half duplex.

#define	MII_LPA_10_F BIT6
	Partner can 10BASE-T, full duplex.

#define	MII_LPA_10_H BIT5
	Partner can 10BASE-T, half duplex.

#define	MII_LPA_100 (BIT7 \| BIT8)
	Partner can 100BASE-T.

#define	MII_LPA_10 (BIT5 \| BIT6)
	Partner can 10BASE-T.

Functions