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