| /* |
| * 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 (CONFIG_COMMANDS & CFG_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 /* CONFIG_COMMANDS & CFG_CMD_NET */ |
| |
| #endif /* CONFIG_DRIVER_ETHER */ |
