diff options
Diffstat (limited to 'drivers/net/gianfar_mii.c')
| -rw-r--r-- | drivers/net/gianfar_mii.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/drivers/net/gianfar_mii.c b/drivers/net/gianfar_mii.c deleted file mode 100644 index 5a74d3d3dbe..00000000000 --- a/drivers/net/gianfar_mii.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * drivers/net/gianfar_mii.c - * - * Gianfar Ethernet Driver -- MIIM bus implementation - * Provides Bus interface for MIIM regs - * - * Author: Andy Fleming - * Maintainer: Kumar Gala (kumar.gala@freescale.com) - * - * Copyright (c) 2002-2004 Freescale Semiconductor, Inc. - * - * 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/config.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/unistd.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/spinlock.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/version.h> -#include <linux/platform_device.h> -#include <asm/ocp.h> -#include <linux/crc32.h> -#include <linux/mii.h> -#include <linux/phy.h> - -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/uaccess.h> - -#include "gianfar.h" -#include "gianfar_mii.h" - -/* Write value to the PHY at mii_id at register regnum, - * on the bus, waiting until the write is done before returning. - * All PHY configuration is done through the TSEC1 MIIM regs */ -int gfar_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value) -{ - struct gfar_mii *regs = bus->priv; - - /* Set the PHY address and the register address we want to write */ - gfar_write(®s->miimadd, (mii_id << 8) | regnum); - - /* Write out the value we want */ - gfar_write(®s->miimcon, value); - - /* Wait for the transaction to finish */ - while (gfar_read(®s->miimind) & MIIMIND_BUSY) - cpu_relax(); - - return 0; -} - -/* Read the bus for PHY at addr mii_id, register regnum, and - * return the value. Clears miimcom first. All PHY - * configuration has to be done through the TSEC1 MIIM regs */ -int gfar_mdio_read(struct mii_bus *bus, int mii_id, int regnum) -{ - struct gfar_mii *regs = bus->priv; - u16 value; - - /* Set the PHY address and the register address we want to read */ - gfar_write(®s->miimadd, (mii_id << 8) | regnum); - - /* Clear miimcom, and then initiate a read */ - gfar_write(®s->miimcom, 0); - gfar_write(®s->miimcom, MII_READ_COMMAND); - - /* Wait for the transaction to finish */ - while (gfar_read(®s->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY)) - cpu_relax(); - - /* Grab the value of the register from miimstat */ - value = gfar_read(®s->miimstat); - - return value; -} - - -/* Reset the MIIM registers, and wait for the bus to free */ -int gfar_mdio_reset(struct mii_bus *bus) -{ - struct gfar_mii *regs = bus->priv; - unsigned int timeout = PHY_INIT_TIMEOUT; - - spin_lock_bh(&bus->mdio_lock); - - /* Reset the management interface */ - gfar_write(®s->miimcfg, MIIMCFG_RESET); - - /* Setup the MII Mgmt clock speed */ - gfar_write(®s->miimcfg, MIIMCFG_INIT_VALUE); - - /* Wait until the bus is free */ - while ((gfar_read(®s->miimind) & MIIMIND_BUSY) && - timeout--) - cpu_relax(); - - spin_unlock_bh(&bus->mdio_lock); - - if(timeout <= 0) { - printk(KERN_ERR "%s: The MII Bus is stuck!\n", - bus->name); - return -EBUSY; - } - - return 0; -} - - -int gfar_mdio_probe(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct gianfar_mdio_data *pdata; - struct gfar_mii *regs; - struct mii_bus *new_bus; - int err = 0; - - if (NULL == dev) - return -EINVAL; - - new_bus = kmalloc(sizeof(struct mii_bus), GFP_KERNEL); - - if (NULL == new_bus) - return -ENOMEM; - - new_bus->name = "Gianfar MII Bus", - new_bus->read = &gfar_mdio_read, - new_bus->write = &gfar_mdio_write, - new_bus->reset = &gfar_mdio_reset, - new_bus->id = pdev->id; - - pdata = (struct gianfar_mdio_data *)pdev->dev.platform_data; - - if (NULL == pdata) { - printk(KERN_ERR "gfar mdio %d: Missing platform data!\n", pdev->id); - return -ENODEV; - } - - /* Set the PHY base address */ - regs = (struct gfar_mii *) ioremap(pdata->paddr, - sizeof (struct gfar_mii)); - - if (NULL == regs) { - err = -ENOMEM; - goto reg_map_fail; - } - - new_bus->priv = regs; - - new_bus->irq = pdata->irq; - - new_bus->dev = dev; - dev_set_drvdata(dev, new_bus); - - err = mdiobus_register(new_bus); - - if (0 != err) { - printk (KERN_ERR "%s: Cannot register as MDIO bus\n", - new_bus->name); - goto bus_register_fail; - } - - return 0; - -bus_register_fail: - iounmap((void *) regs); -reg_map_fail: - kfree(new_bus); - - return err; -} - - -int gfar_mdio_remove(struct device *dev) -{ - struct mii_bus *bus = dev_get_drvdata(dev); - - mdiobus_unregister(bus); - - dev_set_drvdata(dev, NULL); - - iounmap((void *) (&bus->priv)); - bus->priv = NULL; - kfree(bus); - - return 0; -} - -static struct device_driver gianfar_mdio_driver = { - .name = "fsl-gianfar_mdio", - .bus = &platform_bus_type, - .probe = gfar_mdio_probe, - .remove = gfar_mdio_remove, -}; - -int __init gfar_mdio_init(void) -{ - return driver_register(&gianfar_mdio_driver); -} - -void __exit gfar_mdio_exit(void) -{ - driver_unregister(&gianfar_mdio_driver); -} |