271 lines
7.5 KiB
C
271 lines
7.5 KiB
C
/*
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* drivers/net/phy/broadcom.c
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*
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* Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet
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* transceivers.
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*
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* Copyright (c) 2006 Maciej W. Rozycki
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*
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* Inspired by code written by Amy Fong.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/phy.h>
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#define MII_BCM54XX_ECR 0x10 /* BCM54xx extended control register */
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#define MII_BCM54XX_ECR_IM 0x1000 /* Interrupt mask */
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#define MII_BCM54XX_ECR_IF 0x0800 /* Interrupt force */
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#define MII_BCM54XX_ESR 0x11 /* BCM54xx extended status register */
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#define MII_BCM54XX_ESR_IS 0x1000 /* Interrupt status */
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#define MII_BCM54XX_ISR 0x1a /* BCM54xx interrupt status register */
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#define MII_BCM54XX_IMR 0x1b /* BCM54xx interrupt mask register */
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#define MII_BCM54XX_INT_CRCERR 0x0001 /* CRC error */
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#define MII_BCM54XX_INT_LINK 0x0002 /* Link status changed */
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#define MII_BCM54XX_INT_SPEED 0x0004 /* Link speed change */
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#define MII_BCM54XX_INT_DUPLEX 0x0008 /* Duplex mode changed */
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#define MII_BCM54XX_INT_LRS 0x0010 /* Local receiver status changed */
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#define MII_BCM54XX_INT_RRS 0x0020 /* Remote receiver status changed */
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#define MII_BCM54XX_INT_SSERR 0x0040 /* Scrambler synchronization error */
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#define MII_BCM54XX_INT_UHCD 0x0080 /* Unsupported HCD negotiated */
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#define MII_BCM54XX_INT_NHCD 0x0100 /* No HCD */
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#define MII_BCM54XX_INT_NHCDL 0x0200 /* No HCD link */
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#define MII_BCM54XX_INT_ANPR 0x0400 /* Auto-negotiation page received */
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#define MII_BCM54XX_INT_LC 0x0800 /* All counters below 128 */
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#define MII_BCM54XX_INT_HC 0x1000 /* Counter above 32768 */
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#define MII_BCM54XX_INT_MDIX 0x2000 /* MDIX status change */
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#define MII_BCM54XX_INT_PSERR 0x4000 /* Pair swap error */
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MODULE_DESCRIPTION("Broadcom PHY driver");
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MODULE_AUTHOR("Maciej W. Rozycki");
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MODULE_LICENSE("GPL");
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static int bcm54xx_config_init(struct phy_device *phydev)
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{
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int reg, err;
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reg = phy_read(phydev, MII_BCM54XX_ECR);
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if (reg < 0)
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return reg;
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/* Mask interrupts globally. */
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reg |= MII_BCM54XX_ECR_IM;
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err = phy_write(phydev, MII_BCM54XX_ECR, reg);
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if (err < 0)
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return err;
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/* Unmask events we are interested in. */
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reg = ~(MII_BCM54XX_INT_DUPLEX |
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MII_BCM54XX_INT_SPEED |
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MII_BCM54XX_INT_LINK);
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err = phy_write(phydev, MII_BCM54XX_IMR, reg);
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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 bcm54xx_ack_interrupt(struct phy_device *phydev)
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{
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int reg;
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/* Clear pending interrupts. */
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reg = phy_read(phydev, MII_BCM54XX_ISR);
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if (reg < 0)
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return reg;
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return 0;
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}
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static int bcm54xx_config_intr(struct phy_device *phydev)
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{
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int reg, err;
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reg = phy_read(phydev, MII_BCM54XX_ECR);
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if (reg < 0)
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return reg;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
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reg &= ~MII_BCM54XX_ECR_IM;
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else
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reg |= MII_BCM54XX_ECR_IM;
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err = phy_write(phydev, MII_BCM54XX_ECR, reg);
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return err;
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}
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static int bcm5481_config_aneg(struct phy_device *phydev)
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{
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int ret;
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/* Aneg firsly. */
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ret = genphy_config_aneg(phydev);
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/* Then we can set up the delay. */
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if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
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u16 reg;
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/*
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* There is no BCM5481 specification available, so down
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* here is everything we know about "register 0x18". This
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* at least helps BCM5481 to successfuly receive packets
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* on MPC8360E-RDK board. Peter Barada <peterb@logicpd.com>
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* says: "This sets delay between the RXD and RXC signals
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* instead of using trace lengths to achieve timing".
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*/
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/* Set RDX clk delay. */
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reg = 0x7 | (0x7 << 12);
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phy_write(phydev, 0x18, reg);
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reg = phy_read(phydev, 0x18);
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/* Set RDX-RXC skew. */
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reg |= (1 << 8);
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/* Write bits 14:0. */
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reg |= (1 << 15);
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phy_write(phydev, 0x18, reg);
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}
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return ret;
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}
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static struct phy_driver bcm5411_driver = {
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.phy_id = 0x00206070,
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.phy_id_mask = 0xfffffff0,
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.name = "Broadcom BCM5411",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
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.config_init = bcm54xx_config_init,
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = bcm54xx_ack_interrupt,
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.config_intr = bcm54xx_config_intr,
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.driver = { .owner = THIS_MODULE },
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};
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static struct phy_driver bcm5421_driver = {
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.phy_id = 0x002060e0,
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.phy_id_mask = 0xfffffff0,
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.name = "Broadcom BCM5421",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
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.config_init = bcm54xx_config_init,
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = bcm54xx_ack_interrupt,
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.config_intr = bcm54xx_config_intr,
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.driver = { .owner = THIS_MODULE },
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};
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static struct phy_driver bcm5461_driver = {
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.phy_id = 0x002060c0,
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.phy_id_mask = 0xfffffff0,
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.name = "Broadcom BCM5461",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
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.config_init = bcm54xx_config_init,
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = bcm54xx_ack_interrupt,
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.config_intr = bcm54xx_config_intr,
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.driver = { .owner = THIS_MODULE },
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};
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static struct phy_driver bcm5464_driver = {
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.phy_id = 0x002060b0,
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.phy_id_mask = 0xfffffff0,
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.name = "Broadcom BCM5464",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
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.config_init = bcm54xx_config_init,
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = bcm54xx_ack_interrupt,
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.config_intr = bcm54xx_config_intr,
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.driver = { .owner = THIS_MODULE },
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};
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static struct phy_driver bcm5481_driver = {
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.phy_id = 0x0143bca0,
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.phy_id_mask = 0xfffffff0,
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.name = "Broadcom BCM5481",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
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.config_init = bcm54xx_config_init,
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.config_aneg = bcm5481_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = bcm54xx_ack_interrupt,
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.config_intr = bcm54xx_config_intr,
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.driver = { .owner = THIS_MODULE },
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};
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static struct phy_driver bcm5482_driver = {
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.phy_id = 0x0143bcb0,
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.phy_id_mask = 0xfffffff0,
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.name = "Broadcom BCM5482",
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.features = PHY_GBIT_FEATURES,
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.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
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.config_init = bcm54xx_config_init,
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = bcm54xx_ack_interrupt,
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.config_intr = bcm54xx_config_intr,
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.driver = { .owner = THIS_MODULE },
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};
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static int __init broadcom_init(void)
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{
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int ret;
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ret = phy_driver_register(&bcm5411_driver);
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if (ret)
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goto out_5411;
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ret = phy_driver_register(&bcm5421_driver);
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if (ret)
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goto out_5421;
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ret = phy_driver_register(&bcm5461_driver);
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if (ret)
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goto out_5461;
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ret = phy_driver_register(&bcm5464_driver);
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if (ret)
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goto out_5464;
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ret = phy_driver_register(&bcm5481_driver);
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if (ret)
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goto out_5481;
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ret = phy_driver_register(&bcm5482_driver);
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if (ret)
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goto out_5482;
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return ret;
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out_5482:
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phy_driver_unregister(&bcm5481_driver);
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out_5481:
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phy_driver_unregister(&bcm5464_driver);
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out_5464:
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phy_driver_unregister(&bcm5461_driver);
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out_5461:
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phy_driver_unregister(&bcm5421_driver);
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out_5421:
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phy_driver_unregister(&bcm5411_driver);
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out_5411:
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return ret;
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}
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static void __exit broadcom_exit(void)
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{
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phy_driver_unregister(&bcm5482_driver);
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phy_driver_unregister(&bcm5481_driver);
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phy_driver_unregister(&bcm5464_driver);
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phy_driver_unregister(&bcm5461_driver);
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phy_driver_unregister(&bcm5421_driver);
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phy_driver_unregister(&bcm5411_driver);
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}
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module_init(broadcom_init);
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module_exit(broadcom_exit);
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