Hello,
This patch adds support for interrupt-driven operation of the Broadcom
Gigabit Ethernet PHYs. I have included device IDs for the parts used on
Broadcom SiByte evaluation boards; more can be added as a need arises.
They are apparently generally software-compatible with one another.
Please consider.
Maciej
Signed-off-by: Maciej W. Rozycki <macro@xxxxxxxxxxxxxx>
patch-mips-2.6.18-20060920-broadcom-phy-15
diff -up --recursive --new-file linux-mips-2.6.18-20060920.macro/drivers/net/phy/Kconfig linux-mips-2.6.18-20060920/drivers/net/phy/Kconfig
--- linux-mips-2.6.18-20060920.macro/drivers/net/phy/Kconfig 2006-09-20 20:50:26.000000000 +0000
+++ linux-mips-2.6.18-20060920/drivers/net/phy/Kconfig 2006-09-23 14:39:08.000000000 +0000
@@ -56,6 +56,12 @@ config SMSC_PHY
---help---
Currently supports the LAN83C185 PHY
+config BROADCOM_PHY
+ tristate "Drivers for Broadcom PHYs"
+ depends on PHYLIB
+ ---help---
+ Currently supports the BCM5411, BCM5421 and BCM5461 PHYs.
+
config FIXED_PHY
tristate "Drivers for PHY emulation on fixed speed/link"
depends on PHYLIB
diff -up --recursive --new-file linux-mips-2.6.18-20060920.macro/drivers/net/phy/Makefile linux-mips-2.6.18-20060920/drivers/net/phy/Makefile
--- linux-mips-2.6.18-20060920.macro/drivers/net/phy/Makefile 2006-09-20 20:50:26.000000000 +0000
+++ linux-mips-2.6.18-20060920/drivers/net/phy/Makefile 2006-09-22 22:55:37.000000000 +0000
@@ -10,4 +10,5 @@ obj-$(CONFIG_LXT_PHY) += lxt.o
obj-$(CONFIG_QSEMI_PHY) += qsemi.o
obj-$(CONFIG_SMSC_PHY) += smsc.o
obj-$(CONFIG_VITESSE_PHY) += vitesse.o
+obj-$(CONFIG_BROADCOM_PHY) += broadcom.o
obj-$(CONFIG_FIXED_PHY) += fixed.o
diff -up --recursive --new-file linux-mips-2.6.18-20060920.macro/drivers/net/phy/broadcom.c linux-mips-2.6.18-20060920/drivers/net/phy/broadcom.c
--- linux-mips-2.6.18-20060920.macro/drivers/net/phy/broadcom.c 1970-01-01 00:00:00.000000000 +0000
+++ linux-mips-2.6.18-20060920/drivers/net/phy/broadcom.c 2006-09-28 01:47:11.000000000 +0000
@@ -0,0 +1,175 @@
+/*
+ * 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 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 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;
+ return ret;
+
+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(&bcm5461_driver);
+ phy_driver_unregister(&bcm5421_driver);
+ phy_driver_unregister(&bcm5411_driver);
+}
+
+module_init(broadcom_init);
+module_exit(broadcom_exit);
