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https://github.com/AsahiLinux/u-boot
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249 lines
6.3 KiB
C
249 lines
6.3 KiB
C
/*
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* (C) Copyright 2006
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* Author : Eric Benard (Eukrea Electromatique)
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* based on dm9161.c which is :
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* (C) Copyright 2003
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* Author : Hamid Ikdoumi (Atmel)
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <at91rm9200_net.h>
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#include <net.h>
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#include <ks8721.h>
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#ifdef CONFIG_DRIVER_ETHER
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#if defined(CONFIG_CMD_NET)
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/*
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* Name:
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* ks8721_isphyconnected
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* Description:
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* Reads the 2 PHY ID registers
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* Arguments:
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* p_mac - pointer to AT91S_EMAC struct
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* Return value:
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* 1 - if id read successfully
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* 0 - if error
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*/
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unsigned int ks8721_isphyconnected(AT91PS_EMAC p_mac)
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{
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unsigned short id1, id2;
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at91rm9200_EmacEnableMDIO(p_mac);
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at91rm9200_EmacReadPhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_PHYID1, &id1);
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at91rm9200_EmacReadPhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_PHYID2, &id2);
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at91rm9200_EmacDisableMDIO(p_mac);
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if ((id1 == (KS8721_PHYID_OUI >> 6)) &&
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((id2 >> 10) == (KS8721_PHYID_OUI & KS8721_LSB_MASK))) {
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if ((id2 & KS8721_MODELMASK) == KS8721BL_MODEL)
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printf("Micrel KS8721bL PHY detected : ");
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else
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printf("Unknown Micrel PHY detected : ");
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return 1;
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}
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return 0;
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}
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/*
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* Name:
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* ks8721_getlinkspeed
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* Description:
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* Link parallel detection status of MAC is checked and set in the
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* MAC configuration registers
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* Arguments:
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* p_mac - pointer to MAC
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* Return value:
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* 1 - if link status set succesfully
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* 0 - if link status not set
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*/
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unsigned char ks8721_getlinkspeed(AT91PS_EMAC p_mac)
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{
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unsigned short stat1;
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if (!at91rm9200_EmacReadPhy(p_mac, KS8721_BMSR, &stat1))
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return 0;
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if (!(stat1 & KS8721_LINK_STATUS)) {
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/* link status up? */
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printf("Link Down !\n");
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return 0;
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}
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if (stat1 & KS8721_100BASE_TX_FD) {
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/* set Emac for 100BaseTX and Full Duplex */
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printf("100BT FD\n");
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p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
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return 1;
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}
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if (stat1 & KS8721_10BASE_T_FD) {
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/* set MII for 10BaseT and Full Duplex */
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printf("10BT FD\n");
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p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
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~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
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| AT91C_EMAC_FD;
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return 1;
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}
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if (stat1 & KS8721_100BASE_T4_HD) {
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/* set MII for 100BaseTX and Half Duplex */
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printf("100BT HD\n");
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p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
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~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
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| AT91C_EMAC_SPD;
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return 1;
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}
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if (stat1 & KS8721_10BASE_T_HD) {
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/* set MII for 10BaseT and Half Duplex */
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printf("10BT HD\n");
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p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
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return 1;
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}
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return 0;
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}
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/*
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* Name:
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* ks8721_initphy
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* Description:
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* MAC starts checking its link by using parallel detection and
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* Autonegotiation and the same is set in the MAC configuration registers
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* Arguments:
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* p_mac - pointer to struct AT91S_EMAC
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* Return value:
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* 1 - if link status set succesfully
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* 0 - if link status not set
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*/
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unsigned char ks8721_initphy(AT91PS_EMAC p_mac)
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{
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unsigned char ret = 1;
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unsigned short intvalue;
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at91rm9200_EmacEnableMDIO(p_mac);
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/* Try another time */
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if (!ks8721_getlinkspeed(p_mac))
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ret = ks8721_getlinkspeed(p_mac);
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/* Disable PHY Interrupts */
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intvalue = 0;
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at91rm9200_EmacWritePhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_MDINTR, &intvalue);
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at91rm9200_EmacDisableMDIO(p_mac);
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return ret;
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}
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/*
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* Name:
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* ks8721_autonegotiate
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* Description:
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* MAC Autonegotiates with the partner status of same is set in the
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* MAC configuration registers
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* Arguments:
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* dev - pointer to struct net_device
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* Return value:
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* 1 - if link status set successfully
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* 0 - if link status not set
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*/
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unsigned char ks8721_autonegotiate(AT91PS_EMAC p_mac, int *status)
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{
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unsigned short value;
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unsigned short phyanar;
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unsigned short phyanalpar;
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/* Set ks8721 control register */
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if (!at91rm9200_EmacReadPhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_BMCR, &value))
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return 0;
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/* remove autonegotiation enable */
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value &= ~KS8721_AUTONEG;
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/* Electrically isolate PHY */
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value |= KS8721_ISOLATE;
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if (!at91rm9200_EmacWritePhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_BMCR, &value)) {
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return 0;
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}
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/*
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* Set the Auto_negotiation Advertisement Register
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* MII advertising for Next page, 100BaseTxFD and HD,
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* 10BaseTFD and HD, IEEE 802.3
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*/
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phyanar = KS8721_NP | KS8721_TX_FDX | KS8721_TX_HDX |
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KS8721_10_FDX | KS8721_10_HDX | KS8721_AN_IEEE_802_3;
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if (!at91rm9200_EmacWritePhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_ANAR, &phyanar)) {
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return 0;
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}
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/* Read the Control Register */
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if (!at91rm9200_EmacReadPhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_BMCR, &value)) {
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return 0;
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}
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value |= KS8721_SPEED_SELECT | KS8721_AUTONEG | KS8721_DUPLEX_MODE;
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if (!at91rm9200_EmacWritePhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_BMCR, &value)) {
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return 0;
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}
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/* Restart Auto_negotiation */
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value |= KS8721_RESTART_AUTONEG;
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value &= ~KS8721_ISOLATE;
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if (!at91rm9200_EmacWritePhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_BMCR, &value)) {
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return 0;
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}
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/* Check AutoNegotiate complete */
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udelay(10000);
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at91rm9200_EmacReadPhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_BMSR, &value);
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if (!(value & KS8721_AUTONEG_COMP))
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return 0;
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/* Get the AutoNeg Link partner base page */
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if (!at91rm9200_EmacReadPhy(p_mac,
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CONFIG_PHY_ADDRESS | KS8721_ANLPAR, &phyanalpar)) {
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return 0;
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}
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if ((phyanar & KS8721_TX_FDX) && (phyanalpar & KS8721_TX_FDX)) {
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/* Set MII for 100BaseTX and Full Duplex */
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p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
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return 1;
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}
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if ((phyanar & KS8721_10_FDX) && (phyanalpar & KS8721_10_FDX)) {
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/* Set MII for 10BaseT and Full Duplex */
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p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
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~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
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| AT91C_EMAC_FD;
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return 1;
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}
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return 0;
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}
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#endif /* CONFIG_CMD_NET */
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#endif /* CONFIG_DRIVER_ETHER */
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