/* * 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 #include #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 * 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);