614 lines
14 KiB
C
614 lines
14 KiB
C
/*
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* drivers/net/phy/marvell.c
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*
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* Driver for Marvell PHYs
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*
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* Author: Andy Fleming
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*
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* Copyright (c) 2004 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/unistd.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/spinlock.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/phy.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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#define MII_M1011_IEVENT 0x13
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#define MII_M1011_IEVENT_CLEAR 0x0000
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#define MII_M1011_IMASK 0x12
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#define MII_M1011_IMASK_INIT 0x6400
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#define MII_M1011_IMASK_CLEAR 0x0000
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#define MII_M1011_PHY_SCR 0x10
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#define MII_M1011_PHY_SCR_AUTO_CROSS 0x0060
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#define MII_M1145_PHY_EXT_CR 0x14
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#define MII_M1145_RGMII_RX_DELAY 0x0080
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#define MII_M1145_RGMII_TX_DELAY 0x0002
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#define M1145_DEV_FLAGS_RESISTANCE 0x00000001
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#define MII_M1111_PHY_LED_CONTROL 0x18
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#define MII_M1111_PHY_LED_DIRECT 0x4100
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#define MII_M1111_PHY_LED_COMBINE 0x411c
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#define MII_M1111_PHY_EXT_CR 0x14
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#define MII_M1111_RX_DELAY 0x80
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#define MII_M1111_TX_DELAY 0x2
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#define MII_M1111_PHY_EXT_SR 0x1b
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#define MII_M1111_HWCFG_MODE_MASK 0xf
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#define MII_M1111_HWCFG_MODE_COPPER_RGMII 0xb
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#define MII_M1111_HWCFG_MODE_FIBER_RGMII 0x3
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#define MII_M1111_HWCFG_MODE_SGMII_NO_CLK 0x4
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#define MII_M1111_HWCFG_FIBER_COPPER_AUTO 0x8000
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#define MII_M1111_HWCFG_FIBER_COPPER_RES 0x2000
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#define MII_M1111_COPPER 0
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#define MII_M1111_FIBER 1
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#define MII_88E1121_PHY_LED_CTRL 16
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#define MII_88E1121_PHY_LED_PAGE 3
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#define MII_88E1121_PHY_LED_DEF 0x0030
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#define MII_88E1121_PHY_PAGE 22
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#define MII_M1011_PHY_STATUS 0x11
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#define MII_M1011_PHY_STATUS_1000 0x8000
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#define MII_M1011_PHY_STATUS_100 0x4000
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#define MII_M1011_PHY_STATUS_SPD_MASK 0xc000
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#define MII_M1011_PHY_STATUS_FULLDUPLEX 0x2000
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#define MII_M1011_PHY_STATUS_RESOLVED 0x0800
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#define MII_M1011_PHY_STATUS_LINK 0x0400
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MODULE_DESCRIPTION("Marvell PHY driver");
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MODULE_AUTHOR("Andy Fleming");
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MODULE_LICENSE("GPL");
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static int marvell_ack_interrupt(struct phy_device *phydev)
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{
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int err;
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/* Clear the interrupts by reading the reg */
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err = phy_read(phydev, MII_M1011_IEVENT);
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if (err < 0)
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return err;
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return 0;
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}
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static int marvell_config_intr(struct phy_device *phydev)
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{
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int err;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
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err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
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else
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err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
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return err;
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}
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static int marvell_config_aneg(struct phy_device *phydev)
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{
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int err;
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/* The Marvell PHY has an errata which requires
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* that certain registers get written in order
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* to restart autonegotiation */
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err = phy_write(phydev, MII_BMCR, BMCR_RESET);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1d, 0x1f);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1e, 0x200c);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1d, 0x5);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1e, 0);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1e, 0x100);
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if (err < 0)
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return err;
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err = phy_write(phydev, MII_M1011_PHY_SCR,
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MII_M1011_PHY_SCR_AUTO_CROSS);
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if (err < 0)
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return err;
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err = phy_write(phydev, MII_M1111_PHY_LED_CONTROL,
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MII_M1111_PHY_LED_DIRECT);
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if (err < 0)
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return err;
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err = genphy_config_aneg(phydev);
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if (err < 0)
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return err;
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if (phydev->autoneg != AUTONEG_ENABLE) {
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int bmcr;
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/*
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* A write to speed/duplex bits (that is performed by
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* genphy_config_aneg() call above) must be followed by
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* a software reset. Otherwise, the write has no effect.
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*/
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bmcr = phy_read(phydev, MII_BMCR);
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if (bmcr < 0)
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return bmcr;
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err = phy_write(phydev, MII_BMCR, bmcr | BMCR_RESET);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static int m88e1121_config_aneg(struct phy_device *phydev)
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{
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int err, temp;
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err = phy_write(phydev, MII_BMCR, BMCR_RESET);
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if (err < 0)
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return err;
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err = phy_write(phydev, MII_M1011_PHY_SCR,
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MII_M1011_PHY_SCR_AUTO_CROSS);
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if (err < 0)
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return err;
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temp = phy_read(phydev, MII_88E1121_PHY_PAGE);
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phy_write(phydev, MII_88E1121_PHY_PAGE, MII_88E1121_PHY_LED_PAGE);
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phy_write(phydev, MII_88E1121_PHY_LED_CTRL, MII_88E1121_PHY_LED_DEF);
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phy_write(phydev, MII_88E1121_PHY_PAGE, temp);
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err = genphy_config_aneg(phydev);
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return err;
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}
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static int m88e1111_config_init(struct phy_device *phydev)
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{
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int err;
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int temp;
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/* Enable Fiber/Copper auto selection */
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temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
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temp &= ~MII_M1111_HWCFG_FIBER_COPPER_AUTO;
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phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
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temp = phy_read(phydev, MII_BMCR);
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temp |= BMCR_RESET;
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phy_write(phydev, MII_BMCR, temp);
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if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) ||
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(phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
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(phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
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(phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
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temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
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if (temp < 0)
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return temp;
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if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
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temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
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} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
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temp &= ~MII_M1111_TX_DELAY;
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temp |= MII_M1111_RX_DELAY;
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} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
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temp &= ~MII_M1111_RX_DELAY;
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temp |= MII_M1111_TX_DELAY;
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}
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err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
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if (err < 0)
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return err;
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temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
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if (temp < 0)
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return temp;
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temp &= ~(MII_M1111_HWCFG_MODE_MASK);
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if (temp & MII_M1111_HWCFG_FIBER_COPPER_RES)
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temp |= MII_M1111_HWCFG_MODE_FIBER_RGMII;
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else
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temp |= MII_M1111_HWCFG_MODE_COPPER_RGMII;
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err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
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if (err < 0)
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return err;
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}
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if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
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temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
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if (temp < 0)
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return temp;
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temp &= ~(MII_M1111_HWCFG_MODE_MASK);
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temp |= MII_M1111_HWCFG_MODE_SGMII_NO_CLK;
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temp |= MII_M1111_HWCFG_FIBER_COPPER_AUTO;
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err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
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if (err < 0)
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return err;
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}
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err = phy_write(phydev, MII_BMCR, BMCR_RESET);
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if (err < 0)
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return err;
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return 0;
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}
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static int m88e1118_config_aneg(struct phy_device *phydev)
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{
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int err;
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err = phy_write(phydev, MII_BMCR, BMCR_RESET);
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if (err < 0)
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return err;
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err = phy_write(phydev, MII_M1011_PHY_SCR,
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MII_M1011_PHY_SCR_AUTO_CROSS);
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if (err < 0)
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return err;
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err = genphy_config_aneg(phydev);
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return 0;
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}
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static int m88e1118_config_init(struct phy_device *phydev)
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{
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int err;
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/* Change address */
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err = phy_write(phydev, 0x16, 0x0002);
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if (err < 0)
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return err;
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/* Enable 1000 Mbit */
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err = phy_write(phydev, 0x15, 0x1070);
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if (err < 0)
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return err;
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/* Change address */
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err = phy_write(phydev, 0x16, 0x0003);
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if (err < 0)
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return err;
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/* Adjust LED Control */
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err = phy_write(phydev, 0x10, 0x021e);
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if (err < 0)
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return err;
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/* Reset address */
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err = phy_write(phydev, 0x16, 0x0);
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if (err < 0)
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return err;
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err = phy_write(phydev, MII_BMCR, BMCR_RESET);
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if (err < 0)
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return err;
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return 0;
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}
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static int m88e1145_config_init(struct phy_device *phydev)
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{
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int err;
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/* Take care of errata E0 & E1 */
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err = phy_write(phydev, 0x1d, 0x001b);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1e, 0x418f);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1d, 0x0016);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1e, 0xa2da);
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if (err < 0)
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return err;
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if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
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int temp = phy_read(phydev, MII_M1145_PHY_EXT_CR);
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if (temp < 0)
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return temp;
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temp |= (MII_M1145_RGMII_RX_DELAY | MII_M1145_RGMII_TX_DELAY);
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err = phy_write(phydev, MII_M1145_PHY_EXT_CR, temp);
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if (err < 0)
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return err;
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if (phydev->dev_flags & M1145_DEV_FLAGS_RESISTANCE) {
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err = phy_write(phydev, 0x1d, 0x0012);
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if (err < 0)
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return err;
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temp = phy_read(phydev, 0x1e);
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if (temp < 0)
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return temp;
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temp &= 0xf03f;
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temp |= 2 << 9; /* 36 ohm */
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temp |= 2 << 6; /* 39 ohm */
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err = phy_write(phydev, 0x1e, temp);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1d, 0x3);
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if (err < 0)
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return err;
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err = phy_write(phydev, 0x1e, 0x8000);
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if (err < 0)
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return err;
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}
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}
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return 0;
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}
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/* marvell_read_status
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*
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* Generic status code does not detect Fiber correctly!
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* Description:
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* Check the link, then figure out the current state
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* by comparing what we advertise with what the link partner
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* advertises. Start by checking the gigabit possibilities,
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* then move on to 10/100.
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*/
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static int marvell_read_status(struct phy_device *phydev)
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{
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int adv;
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int err;
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int lpa;
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int status = 0;
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/* Update the link, but return if there
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* was an error */
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err = genphy_update_link(phydev);
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if (err)
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return err;
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if (AUTONEG_ENABLE == phydev->autoneg) {
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status = phy_read(phydev, MII_M1011_PHY_STATUS);
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if (status < 0)
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return status;
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lpa = phy_read(phydev, MII_LPA);
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if (lpa < 0)
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return lpa;
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adv = phy_read(phydev, MII_ADVERTISE);
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if (adv < 0)
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return adv;
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lpa &= adv;
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if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
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phydev->duplex = DUPLEX_FULL;
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else
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phydev->duplex = DUPLEX_HALF;
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status = status & MII_M1011_PHY_STATUS_SPD_MASK;
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phydev->pause = phydev->asym_pause = 0;
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switch (status) {
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case MII_M1011_PHY_STATUS_1000:
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phydev->speed = SPEED_1000;
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break;
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case MII_M1011_PHY_STATUS_100:
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phydev->speed = SPEED_100;
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break;
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default:
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phydev->speed = SPEED_10;
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break;
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}
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if (phydev->duplex == DUPLEX_FULL) {
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phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
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phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
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}
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} else {
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int bmcr = phy_read(phydev, MII_BMCR);
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if (bmcr < 0)
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return bmcr;
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if (bmcr & BMCR_FULLDPLX)
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phydev->duplex = DUPLEX_FULL;
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else
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phydev->duplex = DUPLEX_HALF;
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if (bmcr & BMCR_SPEED1000)
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phydev->speed = SPEED_1000;
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else if (bmcr & BMCR_SPEED100)
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phydev->speed = SPEED_100;
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else
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phydev->speed = SPEED_10;
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phydev->pause = phydev->asym_pause = 0;
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}
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return 0;
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}
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static int m88e1121_did_interrupt(struct phy_device *phydev)
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{
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int imask;
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imask = phy_read(phydev, MII_M1011_IEVENT);
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if (imask & MII_M1011_IMASK_INIT)
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return 1;
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return 0;
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}
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static struct phy_driver marvell_drivers[] = {
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{
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.phy_id = 0x01410c60,
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.phy_id_mask = 0xfffffff0,
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.name = "Marvell 88E1101",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_INTERRUPT,
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.config_aneg = &marvell_config_aneg,
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.read_status = &genphy_read_status,
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.ack_interrupt = &marvell_ack_interrupt,
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.config_intr = &marvell_config_intr,
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.driver = { .owner = THIS_MODULE },
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},
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{
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.phy_id = 0x01410c90,
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.phy_id_mask = 0xfffffff0,
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.name = "Marvell 88E1112",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_INTERRUPT,
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.config_init = &m88e1111_config_init,
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.config_aneg = &marvell_config_aneg,
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.read_status = &genphy_read_status,
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.ack_interrupt = &marvell_ack_interrupt,
|
|
.config_intr = &marvell_config_intr,
|
|
.driver = { .owner = THIS_MODULE },
|
|
},
|
|
{
|
|
.phy_id = 0x01410cc0,
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "Marvell 88E1111",
|
|
.features = PHY_GBIT_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.config_init = &m88e1111_config_init,
|
|
.config_aneg = &marvell_config_aneg,
|
|
.read_status = &marvell_read_status,
|
|
.ack_interrupt = &marvell_ack_interrupt,
|
|
.config_intr = &marvell_config_intr,
|
|
.driver = { .owner = THIS_MODULE },
|
|
},
|
|
{
|
|
.phy_id = 0x01410e10,
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "Marvell 88E1118",
|
|
.features = PHY_GBIT_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.config_init = &m88e1118_config_init,
|
|
.config_aneg = &m88e1118_config_aneg,
|
|
.read_status = &genphy_read_status,
|
|
.ack_interrupt = &marvell_ack_interrupt,
|
|
.config_intr = &marvell_config_intr,
|
|
.driver = {.owner = THIS_MODULE,},
|
|
},
|
|
{
|
|
.phy_id = 0x01410cb0,
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "Marvell 88E1121R",
|
|
.features = PHY_GBIT_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.config_aneg = &m88e1121_config_aneg,
|
|
.read_status = &marvell_read_status,
|
|
.ack_interrupt = &marvell_ack_interrupt,
|
|
.config_intr = &marvell_config_intr,
|
|
.did_interrupt = &m88e1121_did_interrupt,
|
|
.driver = { .owner = THIS_MODULE },
|
|
},
|
|
{
|
|
.phy_id = 0x01410cd0,
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "Marvell 88E1145",
|
|
.features = PHY_GBIT_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.config_init = &m88e1145_config_init,
|
|
.config_aneg = &marvell_config_aneg,
|
|
.read_status = &genphy_read_status,
|
|
.ack_interrupt = &marvell_ack_interrupt,
|
|
.config_intr = &marvell_config_intr,
|
|
.driver = { .owner = THIS_MODULE },
|
|
},
|
|
{
|
|
.phy_id = 0x01410e30,
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "Marvell 88E1240",
|
|
.features = PHY_GBIT_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.config_init = &m88e1111_config_init,
|
|
.config_aneg = &marvell_config_aneg,
|
|
.read_status = &genphy_read_status,
|
|
.ack_interrupt = &marvell_ack_interrupt,
|
|
.config_intr = &marvell_config_intr,
|
|
.driver = { .owner = THIS_MODULE },
|
|
},
|
|
};
|
|
|
|
static int __init marvell_init(void)
|
|
{
|
|
int ret;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++) {
|
|
ret = phy_driver_register(&marvell_drivers[i]);
|
|
|
|
if (ret) {
|
|
while (i-- > 0)
|
|
phy_driver_unregister(&marvell_drivers[i]);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit marvell_exit(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++)
|
|
phy_driver_unregister(&marvell_drivers[i]);
|
|
}
|
|
|
|
module_init(marvell_init);
|
|
module_exit(marvell_exit);
|