mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
232 lines
6.4 KiB
C
232 lines
6.4 KiB
C
/*
|
|
* Broadcom BCM5221 Ethernet PHY
|
|
*
|
|
* (C) Copyright 2005 REA Elektronik GmbH <www.rea.de>
|
|
* Anders Larsen <alarsen@rea.de>
|
|
*
|
|
* (C) Copyright 2003
|
|
* Author : Hamid Ikdoumi (Atmel)
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <at91rm9200_net.h>
|
|
#include <net.h>
|
|
#include <bcm5221.h>
|
|
|
|
#ifdef CONFIG_DRIVER_ETHER
|
|
|
|
#if defined(CONFIG_CMD_NET)
|
|
|
|
/*
|
|
* Name:
|
|
* bcm5221_IsPhyConnected
|
|
* Description:
|
|
* Reads the 2 PHY ID registers
|
|
* Arguments:
|
|
* p_mac - pointer to AT91S_EMAC struct
|
|
* Return value:
|
|
* TRUE - if id read successfully
|
|
* FALSE- if error
|
|
*/
|
|
unsigned int bcm5221_IsPhyConnected (AT91PS_EMAC p_mac)
|
|
{
|
|
unsigned short Id1, Id2;
|
|
|
|
at91rm9200_EmacEnableMDIO (p_mac);
|
|
at91rm9200_EmacReadPhy (p_mac, BCM5221_PHYID1, &Id1);
|
|
at91rm9200_EmacReadPhy (p_mac, BCM5221_PHYID2, &Id2);
|
|
at91rm9200_EmacDisableMDIO (p_mac);
|
|
|
|
if ((Id1 == (BCM5221_PHYID1_OUI >> 6)) &&
|
|
((Id2 >> 10) == (BCM5221_PHYID1_OUI & BCM5221_LSB_MASK)))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Name:
|
|
* bcm5221_GetLinkSpeed
|
|
* Description:
|
|
* Link parallel detection status of MAC is checked and set in the
|
|
* MAC configuration registers
|
|
* Arguments:
|
|
* p_mac - pointer to MAC
|
|
* Return value:
|
|
* TRUE - if link status set succesfully
|
|
* FALSE - if link status not set
|
|
*/
|
|
unsigned char bcm5221_GetLinkSpeed (AT91PS_EMAC p_mac)
|
|
{
|
|
unsigned short stat1, stat2;
|
|
|
|
if (!at91rm9200_EmacReadPhy (p_mac, BCM5221_BMSR, &stat1))
|
|
return FALSE;
|
|
|
|
if (!(stat1 & BCM5221_LINK_STATUS)) /* link status up? */
|
|
return FALSE;
|
|
|
|
if (!at91rm9200_EmacReadPhy (p_mac, BCM5221_ACSR, &stat2))
|
|
return FALSE;
|
|
|
|
if ((stat1 & BCM5221_100BASE_TX_FD) && (stat2 & BCM5221_100) && (stat2 & BCM5221_FDX)) {
|
|
/*set Emac for 100BaseTX and Full Duplex */
|
|
p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
|
|
return TRUE;
|
|
}
|
|
|
|
if ((stat1 & BCM5221_10BASE_T_FD) && !(stat2 & BCM5221_100) && (stat2 & BCM5221_FDX)) {
|
|
/*set MII for 10BaseT and Full Duplex */
|
|
p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
|
|
~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
|
|
| AT91C_EMAC_FD;
|
|
return TRUE;
|
|
}
|
|
|
|
if ((stat1 & BCM5221_100BASE_TX_HD) && (stat2 & BCM5221_100) && !(stat2 & BCM5221_FDX)) {
|
|
/*set MII for 100BaseTX and Half Duplex */
|
|
p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
|
|
~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
|
|
| AT91C_EMAC_SPD;
|
|
return TRUE;
|
|
}
|
|
|
|
if ((stat1 & BCM5221_10BASE_T_HD) && !(stat2 & BCM5221_100) && !(stat2 & BCM5221_FDX)) {
|
|
/*set MII for 10BaseT and Half Duplex */
|
|
p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Name:
|
|
* bcm5221_InitPhy
|
|
* Description:
|
|
* MAC starts checking its link by using parallel detection and
|
|
* Autonegotiation and the same is set in the MAC configuration registers
|
|
* Arguments:
|
|
* p_mac - pointer to struct AT91S_EMAC
|
|
* Return value:
|
|
* TRUE - if link status set succesfully
|
|
* FALSE - if link status not set
|
|
*/
|
|
unsigned char bcm5221_InitPhy (AT91PS_EMAC p_mac)
|
|
{
|
|
unsigned char ret = TRUE;
|
|
unsigned short IntValue;
|
|
|
|
at91rm9200_EmacEnableMDIO (p_mac);
|
|
|
|
if (!bcm5221_GetLinkSpeed (p_mac)) {
|
|
/* Try another time */
|
|
ret = bcm5221_GetLinkSpeed (p_mac);
|
|
}
|
|
|
|
/* Disable PHY Interrupts */
|
|
at91rm9200_EmacReadPhy (p_mac, BCM5221_INTR, &IntValue);
|
|
/* clear FDX LED and INTR Enable */
|
|
IntValue &= ~(BCM5221_FDX_LED | BCM5221_INTR_ENABLE);
|
|
/* set FDX, SPD, Link, INTR masks */
|
|
IntValue |= (BCM5221_FDX_MASK | BCM5221_SPD_MASK |
|
|
BCM5221_LINK_MASK | BCM5221_INTR_MASK);
|
|
at91rm9200_EmacWritePhy (p_mac, BCM5221_INTR, &IntValue);
|
|
at91rm9200_EmacDisableMDIO (p_mac);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
|
|
/*
|
|
* Name:
|
|
* bcm5221_AutoNegotiate
|
|
* Description:
|
|
* MAC Autonegotiates with the partner status of same is set in the
|
|
* MAC configuration registers
|
|
* Arguments:
|
|
* dev - pointer to struct net_device
|
|
* Return value:
|
|
* TRUE - if link status set successfully
|
|
* FALSE - if link status not set
|
|
*/
|
|
unsigned char bcm5221_AutoNegotiate (AT91PS_EMAC p_mac, int *status)
|
|
{
|
|
unsigned short value;
|
|
unsigned short PhyAnar;
|
|
unsigned short PhyAnalpar;
|
|
|
|
/* Set bcm5221 control register */
|
|
if (!at91rm9200_EmacReadPhy (p_mac, BCM5221_BMCR, &value))
|
|
return FALSE;
|
|
value &= ~BCM5221_AUTONEG; /* remove autonegotiation enable */
|
|
value |= BCM5221_ISOLATE; /* Electrically isolate PHY */
|
|
if (!at91rm9200_EmacWritePhy (p_mac, BCM5221_BMCR, &value))
|
|
return FALSE;
|
|
|
|
/* Set the Auto_negotiation Advertisement Register */
|
|
/* MII advertising for 100BaseTxFD and HD, 10BaseTFD and HD, IEEE 802.3 */
|
|
PhyAnar = BCM5221_TX_FDX | BCM5221_TX_HDX |
|
|
BCM5221_10_FDX | BCM5221_10_HDX | BCM5221_AN_IEEE_802_3;
|
|
if (!at91rm9200_EmacWritePhy (p_mac, BCM5221_ANAR, &PhyAnar))
|
|
return FALSE;
|
|
|
|
/* Read the Control Register */
|
|
if (!at91rm9200_EmacReadPhy (p_mac, BCM5221_BMCR, &value))
|
|
return FALSE;
|
|
|
|
value |= BCM5221_SPEED_SELECT | BCM5221_AUTONEG | BCM5221_DUPLEX_MODE;
|
|
if (!at91rm9200_EmacWritePhy (p_mac, BCM5221_BMCR, &value))
|
|
return FALSE;
|
|
/* Restart Auto_negotiation */
|
|
value |= BCM5221_RESTART_AUTONEG;
|
|
value &= ~BCM5221_ISOLATE;
|
|
if (!at91rm9200_EmacWritePhy (p_mac, BCM5221_BMCR, &value))
|
|
return FALSE;
|
|
|
|
/*check AutoNegotiate complete */
|
|
udelay (10000);
|
|
at91rm9200_EmacReadPhy (p_mac, BCM5221_BMSR, &value);
|
|
if (!(value & BCM5221_AUTONEG_COMP))
|
|
return FALSE;
|
|
|
|
/* Get the AutoNeg Link partner base page */
|
|
if (!at91rm9200_EmacReadPhy (p_mac, BCM5221_ANLPAR, &PhyAnalpar))
|
|
return FALSE;
|
|
|
|
if ((PhyAnar & BCM5221_TX_FDX) && (PhyAnalpar & BCM5221_TX_FDX)) {
|
|
/*set MII for 100BaseTX and Full Duplex */
|
|
p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
|
|
return TRUE;
|
|
}
|
|
|
|
if ((PhyAnar & BCM5221_10_FDX) && (PhyAnalpar & BCM5221_10_FDX)) {
|
|
/*set MII for 10BaseT and Full Duplex */
|
|
p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
|
|
~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
|
|
| AT91C_EMAC_FD;
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* CONFIG_DRIVER_ETHER */
|