| /* |
| * 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_88E1121_PHY_LED_CTRL 16 |
| #define MII_88E1121_PHY_LED_PAGE 3 |
| #define MII_88E1121_PHY_LED_DEF 0x0030 |
| #define MII_88E1121_PHY_PAGE 22 |
| |
| #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 m88e1121_config_aneg(struct phy_device *phydev) |
| { |
| int err, temp; |
| |
| err = phy_write(phydev, MII_BMCR, BMCR_RESET); |
| if (err < 0) |
| return err; |
| |
| err = phy_write(phydev, MII_M1011_PHY_SCR, |
| MII_M1011_PHY_SCR_AUTO_CROSS); |
| if (err < 0) |
| return err; |
| |
| temp = phy_read(phydev, MII_88E1121_PHY_PAGE); |
| |
| phy_write(phydev, MII_88E1121_PHY_PAGE, MII_88E1121_PHY_LED_PAGE); |
| phy_write(phydev, MII_88E1121_PHY_LED_CTRL, MII_88E1121_PHY_LED_DEF); |
| phy_write(phydev, MII_88E1121_PHY_PAGE, temp); |
| |
| 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 m88e1118_config_aneg(struct phy_device *phydev) |
| { |
| int err; |
| |
| err = phy_write(phydev, MII_BMCR, BMCR_RESET); |
| 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 = genphy_config_aneg(phydev); |
| return 0; |
| } |
| |
| static int m88e1118_config_init(struct phy_device *phydev) |
| { |
| int err; |
| |
| /* Change address */ |
| err = phy_write(phydev, 0x16, 0x0002); |
| if (err < 0) |
| return err; |
| |
| /* Enable 1000 Mbit */ |
| err = phy_write(phydev, 0x15, 0x1070); |
| if (err < 0) |
| return err; |
| |
| /* Change address */ |
| err = phy_write(phydev, 0x16, 0x0003); |
| if (err < 0) |
| return err; |
| |
| /* Adjust LED Control */ |
| err = phy_write(phydev, 0x10, 0x021e); |
| if (err < 0) |
| return err; |
| |
| /* Reset address */ |
| err = phy_write(phydev, 0x16, 0x0); |
| 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 int m88e1121_did_interrupt(struct phy_device *phydev) |
| { |
| int imask; |
| |
| imask = phy_read(phydev, MII_M1011_IEVENT); |
| |
| if (imask & MII_M1011_IMASK_INIT) |
| return 1; |
| |
| 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 = 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); |