Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 539 insertions, 0 deletions

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
new file mode 100644
index 0000000..eb6411c
--- /dev/null
+++ b/drivers/net/phy/marvell.c
@@ -0,0 +1,539 @@
+/*
+ * 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 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 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 = 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);