474 lines
11 KiB
C
474 lines
11 KiB
C
/*
|
|
* drivers/net/phy/marvell.c
|
|
*
|
|
* Driver for Marvell PHYs
|
|
*
|
|
* Author: Andy Fleming
|
|
*
|
|
* Copyright (c) 2004 Freescale Semiconductor, Inc.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/unistd.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mii.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/phy.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#define MII_M1011_IEVENT 0x13
|
|
#define MII_M1011_IEVENT_CLEAR 0x0000
|
|
|
|
#define MII_M1011_IMASK 0x12
|
|
#define MII_M1011_IMASK_INIT 0x6400
|
|
#define MII_M1011_IMASK_CLEAR 0x0000
|
|
|
|
#define MII_M1011_PHY_SCR 0x10
|
|
#define MII_M1011_PHY_SCR_AUTO_CROSS 0x0060
|
|
|
|
#define MII_M1145_PHY_EXT_CR 0x14
|
|
#define MII_M1145_RGMII_RX_DELAY 0x0080
|
|
#define MII_M1145_RGMII_TX_DELAY 0x0002
|
|
|
|
#define M1145_DEV_FLAGS_RESISTANCE 0x00000001
|
|
|
|
#define MII_M1111_PHY_LED_CONTROL 0x18
|
|
#define MII_M1111_PHY_LED_DIRECT 0x4100
|
|
#define MII_M1111_PHY_LED_COMBINE 0x411c
|
|
#define MII_M1111_PHY_EXT_CR 0x14
|
|
#define MII_M1111_RX_DELAY 0x80
|
|
#define MII_M1111_TX_DELAY 0x2
|
|
#define MII_M1111_PHY_EXT_SR 0x1b
|
|
|
|
#define MII_M1111_HWCFG_MODE_MASK 0xf
|
|
#define MII_M1111_HWCFG_MODE_COPPER_RGMII 0xb
|
|
#define MII_M1111_HWCFG_MODE_FIBER_RGMII 0x3
|
|
#define MII_M1111_HWCFG_MODE_SGMII_NO_CLK 0x4
|
|
#define MII_M1111_HWCFG_FIBER_COPPER_AUTO 0x8000
|
|
#define MII_M1111_HWCFG_FIBER_COPPER_RES 0x2000
|
|
|
|
#define MII_M1111_COPPER 0
|
|
#define MII_M1111_FIBER 1
|
|
|
|
#define MII_M1011_PHY_STATUS 0x11
|
|
#define MII_M1011_PHY_STATUS_1000 0x8000
|
|
#define MII_M1011_PHY_STATUS_100 0x4000
|
|
#define MII_M1011_PHY_STATUS_SPD_MASK 0xc000
|
|
#define MII_M1011_PHY_STATUS_FULLDUPLEX 0x2000
|
|
#define MII_M1011_PHY_STATUS_RESOLVED 0x0800
|
|
#define MII_M1011_PHY_STATUS_LINK 0x0400
|
|
|
|
|
|
MODULE_DESCRIPTION("Marvell PHY driver");
|
|
MODULE_AUTHOR("Andy Fleming");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int marvell_ack_interrupt(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
/* Clear the interrupts by reading the reg */
|
|
err = phy_read(phydev, MII_M1011_IEVENT);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int marvell_config_intr(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
|
|
err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
|
|
else
|
|
err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int marvell_config_aneg(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
/* The Marvell PHY has an errata which requires
|
|
* that certain registers get written in order
|
|
* to restart autonegotiation */
|
|
err = phy_write(phydev, MII_BMCR, BMCR_RESET);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1d, 0x1f);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1e, 0x200c);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1d, 0x5);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1e, 0);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1e, 0x100);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, MII_M1011_PHY_SCR,
|
|
MII_M1011_PHY_SCR_AUTO_CROSS);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, MII_M1111_PHY_LED_CONTROL,
|
|
MII_M1111_PHY_LED_DIRECT);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = genphy_config_aneg(phydev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int m88e1111_config_init(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
int temp;
|
|
|
|
/* Enable Fiber/Copper auto selection */
|
|
temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
|
|
temp &= ~MII_M1111_HWCFG_FIBER_COPPER_AUTO;
|
|
phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
|
|
|
|
temp = phy_read(phydev, MII_BMCR);
|
|
temp |= BMCR_RESET;
|
|
phy_write(phydev, MII_BMCR, temp);
|
|
|
|
if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) ||
|
|
(phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
|
|
(phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
|
|
(phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
|
|
|
|
temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
|
|
if (temp < 0)
|
|
return temp;
|
|
|
|
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
|
|
temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
|
|
} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
|
|
temp &= ~MII_M1111_TX_DELAY;
|
|
temp |= MII_M1111_RX_DELAY;
|
|
} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
|
|
temp &= ~MII_M1111_RX_DELAY;
|
|
temp |= MII_M1111_TX_DELAY;
|
|
}
|
|
|
|
err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
|
|
if (temp < 0)
|
|
return temp;
|
|
|
|
temp &= ~(MII_M1111_HWCFG_MODE_MASK);
|
|
|
|
if (temp & MII_M1111_HWCFG_FIBER_COPPER_RES)
|
|
temp |= MII_M1111_HWCFG_MODE_FIBER_RGMII;
|
|
else
|
|
temp |= MII_M1111_HWCFG_MODE_COPPER_RGMII;
|
|
|
|
err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
|
|
temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
|
|
if (temp < 0)
|
|
return temp;
|
|
|
|
temp &= ~(MII_M1111_HWCFG_MODE_MASK);
|
|
temp |= MII_M1111_HWCFG_MODE_SGMII_NO_CLK;
|
|
|
|
err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
err = phy_write(phydev, MII_BMCR, BMCR_RESET);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int m88e1145_config_init(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
/* Take care of errata E0 & E1 */
|
|
err = phy_write(phydev, 0x1d, 0x001b);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1e, 0x418f);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1d, 0x0016);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1e, 0xa2da);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
|
|
int temp = phy_read(phydev, MII_M1145_PHY_EXT_CR);
|
|
if (temp < 0)
|
|
return temp;
|
|
|
|
temp |= (MII_M1145_RGMII_RX_DELAY | MII_M1145_RGMII_TX_DELAY);
|
|
|
|
err = phy_write(phydev, MII_M1145_PHY_EXT_CR, temp);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (phydev->dev_flags & M1145_DEV_FLAGS_RESISTANCE) {
|
|
err = phy_write(phydev, 0x1d, 0x0012);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
temp = phy_read(phydev, 0x1e);
|
|
if (temp < 0)
|
|
return temp;
|
|
|
|
temp &= 0xf03f;
|
|
temp |= 2 << 9; /* 36 ohm */
|
|
temp |= 2 << 6; /* 39 ohm */
|
|
|
|
err = phy_write(phydev, 0x1e, temp);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1d, 0x3);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = phy_write(phydev, 0x1e, 0x8000);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* marvell_read_status
|
|
*
|
|
* Generic status code does not detect Fiber correctly!
|
|
* Description:
|
|
* Check the link, then figure out the current state
|
|
* by comparing what we advertise with what the link partner
|
|
* advertises. Start by checking the gigabit possibilities,
|
|
* then move on to 10/100.
|
|
*/
|
|
static int marvell_read_status(struct phy_device *phydev)
|
|
{
|
|
int adv;
|
|
int err;
|
|
int lpa;
|
|
int status = 0;
|
|
|
|
/* Update the link, but return if there
|
|
* was an error */
|
|
err = genphy_update_link(phydev);
|
|
if (err)
|
|
return err;
|
|
|
|
if (AUTONEG_ENABLE == phydev->autoneg) {
|
|
status = phy_read(phydev, MII_M1011_PHY_STATUS);
|
|
if (status < 0)
|
|
return status;
|
|
|
|
lpa = phy_read(phydev, MII_LPA);
|
|
if (lpa < 0)
|
|
return lpa;
|
|
|
|
adv = phy_read(phydev, MII_ADVERTISE);
|
|
if (adv < 0)
|
|
return adv;
|
|
|
|
lpa &= adv;
|
|
|
|
if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
|
|
phydev->duplex = DUPLEX_FULL;
|
|
else
|
|
phydev->duplex = DUPLEX_HALF;
|
|
|
|
status = status & MII_M1011_PHY_STATUS_SPD_MASK;
|
|
phydev->pause = phydev->asym_pause = 0;
|
|
|
|
switch (status) {
|
|
case MII_M1011_PHY_STATUS_1000:
|
|
phydev->speed = SPEED_1000;
|
|
break;
|
|
|
|
case MII_M1011_PHY_STATUS_100:
|
|
phydev->speed = SPEED_100;
|
|
break;
|
|
|
|
default:
|
|
phydev->speed = SPEED_10;
|
|
break;
|
|
}
|
|
|
|
if (phydev->duplex == DUPLEX_FULL) {
|
|
phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
|
|
phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
|
|
}
|
|
} else {
|
|
int bmcr = phy_read(phydev, MII_BMCR);
|
|
|
|
if (bmcr < 0)
|
|
return bmcr;
|
|
|
|
if (bmcr & BMCR_FULLDPLX)
|
|
phydev->duplex = DUPLEX_FULL;
|
|
else
|
|
phydev->duplex = DUPLEX_HALF;
|
|
|
|
if (bmcr & BMCR_SPEED1000)
|
|
phydev->speed = SPEED_1000;
|
|
else if (bmcr & BMCR_SPEED100)
|
|
phydev->speed = SPEED_100;
|
|
else
|
|
phydev->speed = SPEED_10;
|
|
|
|
phydev->pause = phydev->asym_pause = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct phy_driver marvell_drivers[] = {
|
|
{
|
|
.phy_id = 0x01410c60,
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "Marvell 88E1101",
|
|
.features = PHY_GBIT_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.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 = 0x01410c90,
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "Marvell 88E1112",
|
|
.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 },
|
|
},
|
|
{
|
|
.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 = 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);
|