aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/ucc_geth_mii.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ucc_geth_mii.c')
-rw-r--r--drivers/net/ucc_geth_mii.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/drivers/net/ucc_geth_mii.c b/drivers/net/ucc_geth_mii.c
deleted file mode 100644
index 0ada4edd56e..00000000000
--- a/drivers/net/ucc_geth_mii.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * drivers/net/ucc_geth_mii.c
- *
- * QE UCC Gigabit Ethernet Driver -- MII Management Bus Implementation
- * Provides Bus interface for MII Management regs in the UCC register space
- *
- * Copyright (C) 2007 Freescale Semiconductor, Inc.
- *
- * Authors: Li Yang <leoli@freescale.com>
- * Kim Phillips <kim.phillips@freescale.com>
- *
- * 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/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/platform_device.h>
-#include <linux/crc32.h>
-#include <linux/mii.h>
-#include <linux/phy.h>
-#include <linux/fsl_devices.h>
-#include <linux/of_platform.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/ucc.h>
-
-#include "ucc_geth_mii.h"
-#include "ucc_geth.h"
-
-#define DEBUG
-#ifdef DEBUG
-#define vdbg(format, arg...) printk(KERN_DEBUG , format "\n" , ## arg)
-#else
-#define vdbg(format, arg...) do {} while(0)
-#endif
-
-#define MII_DRV_DESC "QE UCC Ethernet Controller MII Bus"
-#define MII_DRV_NAME "fsl-uec_mdio"
-
-/* Write value to the PHY for this device to the register at regnum, */
-/* waiting until the write is done before it returns. All PHY */
-/* configuration has to be done through the master UEC MIIM regs */
-int uec_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value)
-{
- struct ucc_mii_mng __iomem *regs = (void __iomem *)bus->priv;
-
- /* Setting up the MII Mangement Address Register */
- out_be32(&regs->miimadd,
- (mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | regnum);
-
- /* Setting up the MII Mangement Control Register with the value */
- out_be32(&regs->miimcon, value);
-
- /* Wait till MII management write is complete */
- while ((in_be32(&regs->miimind)) & MIIMIND_BUSY)
- cpu_relax();
-
- return 0;
-}
-
-/* Reads from register regnum in the PHY for device dev, */
-/* returning the value. Clears miimcom first. All PHY */
-/* configuration has to be done through the TSEC1 MIIM regs */
-int uec_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
-{
- struct ucc_mii_mng __iomem *regs = (void __iomem *)bus->priv;
- u16 value;
-
- /* Setting up the MII Mangement Address Register */
- out_be32(&regs->miimadd,
- (mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | regnum);
-
- /* Clear miimcom, perform an MII management read cycle */
- out_be32(&regs->miimcom, 0);
- out_be32(&regs->miimcom, MIIMCOM_READ_CYCLE);
-
- /* Wait till MII management write is complete */
- while ((in_be32(&regs->miimind)) & (MIIMIND_BUSY | MIIMIND_NOT_VALID))
- cpu_relax();
-
- /* Read MII management status */
- value = in_be32(&regs->miimstat);
-
- return value;
-}
-
-/* Reset the MIIM registers, and wait for the bus to free */
-static int uec_mdio_reset(struct mii_bus *bus)
-{
- struct ucc_mii_mng __iomem *regs = (void __iomem *)bus->priv;
- int timeout = PHY_INIT_TIMEOUT;
-
- mutex_lock(&bus->mdio_lock);
-
- /* Reset the management interface */
- out_be32(&regs->miimcfg, MIIMCFG_RESET_MANAGEMENT);
-
- /* Setup the MII Mgmt clock speed */
- out_be32(&regs->miimcfg, MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_112);
-
- /* Wait until the bus is free */
- while ((in_be32(&regs->miimind) & MIIMIND_BUSY) && timeout--)
- cpu_relax();
-
- mutex_unlock(&bus->mdio_lock);
-
- if (timeout < 0) {
- printk(KERN_ERR "%s: The MII Bus is stuck!\n", bus->name);
- return -EBUSY;
- }
-
- return 0;
-}
-
-static int uec_mdio_probe(struct of_device *ofdev, const struct of_device_id *match)
-{
- struct device *device = &ofdev->dev;
- struct device_node *np = ofdev->node, *tempnp = NULL;
- struct device_node *child = NULL;
- struct ucc_mii_mng __iomem *regs;
- struct mii_bus *new_bus;
- struct resource res;
- int k, err = 0;
-
- new_bus = mdiobus_alloc();
- if (NULL == new_bus)
- return -ENOMEM;
-
- new_bus->name = "UCC Ethernet Controller MII Bus";
- new_bus->read = &uec_mdio_read;
- new_bus->write = &uec_mdio_write;
- new_bus->reset = &uec_mdio_reset;
-
- memset(&res, 0, sizeof(res));
-
- err = of_address_to_resource(np, 0, &res);
- if (err)
- goto reg_map_fail;
-
- uec_mdio_bus_name(new_bus->id, np);
-
- new_bus->irq = kmalloc(32 * sizeof(int), GFP_KERNEL);
-
- if (NULL == new_bus->irq) {
- err = -ENOMEM;
- goto reg_map_fail;
- }
-
- for (k = 0; k < 32; k++)
- new_bus->irq[k] = PHY_POLL;
-
- while ((child = of_get_next_child(np, child)) != NULL) {
- int irq = irq_of_parse_and_map(child, 0);
- if (irq != NO_IRQ) {
- const u32 *id = of_get_property(child, "reg", NULL);
- new_bus->irq[*id] = irq;
- }
- }
-
- /* Set the base address */
- regs = ioremap(res.start, sizeof(struct ucc_mii_mng));
-
- if (NULL == regs) {
- err = -ENOMEM;
- goto ioremap_fail;
- }
-
- new_bus->priv = (void __force *)regs;
-
- new_bus->parent = device;
- dev_set_drvdata(device, new_bus);
-
- /* Read MII management master from device tree */
- while ((tempnp = of_find_compatible_node(tempnp, "network", "ucc_geth"))
- != NULL) {
- struct resource tempres;
-
- err = of_address_to_resource(tempnp, 0, &tempres);
- if (err)
- goto bus_register_fail;
-
- /* if our mdio regs fall within this UCC regs range */
- if ((res.start >= tempres.start) &&
- (res.end <= tempres.end)) {
- /* set this UCC to be the MII master */
- const u32 *id;
-
- id = of_get_property(tempnp, "cell-index", NULL);
- if (!id) {
- id = of_get_property(tempnp, "device-id", NULL);
- if (!id)
- goto bus_register_fail;
- }
-
- ucc_set_qe_mux_mii_mng(*id - 1);
-
- /* assign the TBI an address which won't
- * conflict with the PHYs */
- out_be32(&regs->utbipar, UTBIPAR_INIT_TBIPA);
- break;
- }
- }
-
- 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(regs);
-ioremap_fail:
- kfree(new_bus->irq);
-reg_map_fail:
- mdiobus_free(new_bus);
-
- return err;
-}
-
-static int uec_mdio_remove(struct of_device *ofdev)
-{
- struct device *device = &ofdev->dev;
- struct mii_bus *bus = dev_get_drvdata(device);
-
- mdiobus_unregister(bus);
-
- dev_set_drvdata(device, NULL);
-
- iounmap((void __iomem *)bus->priv);
- bus->priv = NULL;
- mdiobus_free(bus);
-
- return 0;
-}
-
-static struct of_device_id uec_mdio_match[] = {
- {
- .type = "mdio",
- .compatible = "ucc_geth_phy",
- },
- {
- .compatible = "fsl,ucc-mdio",
- },
- {},
-};
-
-static struct of_platform_driver uec_mdio_driver = {
- .name = MII_DRV_NAME,
- .probe = uec_mdio_probe,
- .remove = uec_mdio_remove,
- .match_table = uec_mdio_match,
-};
-
-int __init uec_mdio_init(void)
-{
- return of_register_platform_driver(&uec_mdio_driver);
-}
-
-/* called from __init ucc_geth_init, therefore can not be __exit */
-void uec_mdio_exit(void)
-{
- of_unregister_platform_driver(&uec_mdio_driver);
-}
-
-void uec_mdio_bus_name(char *name, struct device_node *np)
-{
- const u32 *reg;
-
- reg = of_get_property(np, "reg", NULL);
-
- snprintf(name, MII_BUS_ID_SIZE, "%s@%x", np->name, reg ? *reg : 0);
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 23:09:59 +0000