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Commit c4b41c9f authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Jeff Garzik
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[PATCH] 2.6.18: sb1250-mac: Broadcom PHY support 



 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.

Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>

patch-mips-2.6.18-20060920-broadcom-phy-15
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 116b23b0

drivers/net/phy/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -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

drivers/net/phy/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/net/phy/broadcom.c

0 → 100644
+175 −0
Original line number Diff line number Diff line 
/*

 *	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);