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-rw-r--r--cpu/arm920t/at91rm9200/dm9161.c225
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diff --git a/cpu/arm920t/at91rm9200/dm9161.c b/cpu/arm920t/at91rm9200/dm9161.c
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--- a/cpu/arm920t/at91rm9200/dm9161.c
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-/*
- * (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>
-#ifdef CONFIG_DRIVER_ETHER
-#include <dm9161.h>
-
-#if defined(CONFIG_CMD_NET)
-
-/*
- * Name:
- * dm9161_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 dm9161_IsPhyConnected (AT91PS_EMAC p_mac)
-{
- unsigned short Id1, Id2;
-
- at91rm9200_EmacEnableMDIO (p_mac);
- at91rm9200_EmacReadPhy (p_mac, DM9161_PHYID1, &Id1);
- at91rm9200_EmacReadPhy (p_mac, DM9161_PHYID2, &Id2);
- at91rm9200_EmacDisableMDIO (p_mac);
-
- if ((Id1 == (DM9161_PHYID1_OUI >> 6)) &&
- ((Id2 >> 10) == (DM9161_PHYID1_OUI & DM9161_LSB_MASK)))
- return TRUE;
-
- return FALSE;
-}
-
-/*
- * Name:
- * dm9161_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
- */
-UCHAR dm9161_GetLinkSpeed (AT91PS_EMAC p_mac)
-{
- unsigned short stat1, stat2;
-
- if (!at91rm9200_EmacReadPhy (p_mac, DM9161_BMSR, &stat1))
- return FALSE;
-
- if (!(stat1 & DM9161_LINK_STATUS)) /* link status up? */
- return FALSE;
-
- if (!at91rm9200_EmacReadPhy (p_mac, DM9161_DSCSR, &stat2))
- return FALSE;
-
- if ((stat1 & DM9161_100BASE_TX_FD) && (stat2 & DM9161_100FDX)) {
- /*set Emac for 100BaseTX and Full Duplex */
- p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
- return TRUE;
- }
-
- if ((stat1 & DM9161_10BASE_T_FD) && (stat2 & DM9161_10FDX)) {
- /*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 & DM9161_100BASE_TX_HD) && (stat2 & DM9161_100HDX)) {
- /*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 & DM9161_10BASE_T_HD) && (stat2 & DM9161_10HDX)) {
- /*set MII for 10BaseT and Half Duplex */
- p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
- return TRUE;
- }
- return FALSE;
-}
-
-
-/*
- * Name:
- * dm9161_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
- */
-UCHAR dm9161_InitPhy (AT91PS_EMAC p_mac)
-{
- UCHAR ret = TRUE;
- unsigned short IntValue;
-
- at91rm9200_EmacEnableMDIO (p_mac);
-
- if (!dm9161_GetLinkSpeed (p_mac)) {
- /* Try another time */
- ret = dm9161_GetLinkSpeed (p_mac);
- }
-
- /* Disable PHY Interrupts */
- at91rm9200_EmacReadPhy (p_mac, DM9161_MDINTR, &IntValue);
- /* set FDX, SPD, Link, INTR masks */
- IntValue |= (DM9161_FDX_MASK | DM9161_SPD_MASK |
- DM9161_LINK_MASK | DM9161_INTR_MASK);
- at91rm9200_EmacWritePhy (p_mac, DM9161_MDINTR, &IntValue);
- at91rm9200_EmacDisableMDIO (p_mac);
-
- return (ret);
-}
-
-
-/*
- * Name:
- * dm9161_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
- */
-UCHAR dm9161_AutoNegotiate (AT91PS_EMAC p_mac, int *status)
-{
- unsigned short value;
- unsigned short PhyAnar;
- unsigned short PhyAnalpar;
-
- /* Set dm9161 control register */
- if (!at91rm9200_EmacReadPhy (p_mac, DM9161_BMCR, &value))
- return FALSE;
- value &= ~DM9161_AUTONEG; /* remove autonegotiation enable */
- value |= DM9161_ISOLATE; /* Electrically isolate PHY */
- if (!at91rm9200_EmacWritePhy (p_mac, DM9161_BMCR, &value))
- return FALSE;
-
- /* Set the Auto_negotiation Advertisement Register */
- /* MII advertising for Next page, 100BaseTxFD and HD, */
- /* 10BaseTFD and HD, IEEE 802.3 */
- PhyAnar = DM9161_NP | DM9161_TX_FDX | DM9161_TX_HDX |
- DM9161_10_FDX | DM9161_10_HDX | DM9161_AN_IEEE_802_3;
- if (!at91rm9200_EmacWritePhy (p_mac, DM9161_ANAR, &PhyAnar))
- return FALSE;
-
- /* Read the Control Register */
- if (!at91rm9200_EmacReadPhy (p_mac, DM9161_BMCR, &value))
- return FALSE;
-
- value |= DM9161_SPEED_SELECT | DM9161_AUTONEG | DM9161_DUPLEX_MODE;
- if (!at91rm9200_EmacWritePhy (p_mac, DM9161_BMCR, &value))
- return FALSE;
- /* Restart Auto_negotiation */
- value |= DM9161_RESTART_AUTONEG;
- value &= ~DM9161_ISOLATE;
- if (!at91rm9200_EmacWritePhy (p_mac, DM9161_BMCR, &value))
- return FALSE;
-
- /*check AutoNegotiate complete */
- udelay (10000);
- at91rm9200_EmacReadPhy (p_mac, DM9161_BMSR, &value);
- if (!(value & DM9161_AUTONEG_COMP))
- return FALSE;
-
- /* Get the AutoNeg Link partner base page */
- if (!at91rm9200_EmacReadPhy (p_mac, DM9161_ANLPAR, &PhyAnalpar))
- return FALSE;
-
- if ((PhyAnar & DM9161_TX_FDX) && (PhyAnalpar & DM9161_TX_FDX)) {
- /*set MII for 100BaseTX and Full Duplex */
- p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
- return TRUE;
- }
-
- if ((PhyAnar & DM9161_10_FDX) && (PhyAnalpar & DM9161_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 */