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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-06-11 02:29:36 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-12 00:22:12 -0700
commitec21e2ec367697b4803e82662bdff6c8567745fc (patch)
treecdb42f597ff5e60516bdab59d306006fd1fafd1c /drivers/net/fsl_pq_mdio.c
parent5346ebf6db077d963e9d81af9df290d7f5532492 (diff)
downloadlinux-ec21e2ec367697b4803e82662bdff6c8567745fc.tar.bz2
freescale: Move the Freescale drivers
Move the Freescale drivers into drivers/net/ethernet/freescale/ and make the necessary Kconfig and Makefile changes. CC: Sandeep Gopalpet <sandeep.kumar@freescale.com> CC: Andy Fleming <afleming@freescale.com> CC: Shlomi Gridish <gridish@freescale.com> CC: Li Yang <leoli@freescale.com> CC: Pantelis Antoniou <pantelis.antoniou@gmail.com> CC: Vitaly Bordug <vbordug@ru.mvista.com> CC: Dan Malek <dmalek@jlc.net> CC: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/fsl_pq_mdio.c')
-rw-r--r--drivers/net/fsl_pq_mdio.c494
1 files changed, 0 insertions, 494 deletions
diff --git a/drivers/net/fsl_pq_mdio.c b/drivers/net/fsl_pq_mdio.c
deleted file mode 100644
index 52f4e8ad48e7..000000000000
--- a/drivers/net/fsl_pq_mdio.c
+++ /dev/null
@@ -1,494 +0,0 @@
-/*
- * Freescale PowerQUICC Ethernet Driver -- MIIM bus implementation
- * Provides Bus interface for MIIM regs
- *
- * Author: Andy Fleming <afleming@freescale.com>
- * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
- *
- * Copyright 2002-2004, 2008-2009 Freescale Semiconductor, Inc.
- *
- * Based on gianfar_mii.c and ucc_geth_mii.c (Li Yang, Kim Phillips)
- *
- * 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/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/of.h>
-#include <linux/of_address.h>
-#include <linux/of_mdio.h>
-#include <linux/of_platform.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/ucc.h>
-
-#include "gianfar.h"
-#include "fsl_pq_mdio.h"
-
-struct fsl_pq_mdio_priv {
- void __iomem *map;
- struct fsl_pq_mdio __iomem *regs;
-};
-
-/*
- * Write value to the PHY at mii_id at register regnum,
- * on the bus attached to the local interface, which may be different from the
- * generic mdio bus (tied to a single interface), waiting until the write is
- * done before returning. This is helpful in programming interfaces like
- * the TBI which control interfaces like onchip SERDES and are always tied to
- * the local mdio pins, which may not be the same as system mdio bus, used for
- * controlling the external PHYs, for example.
- */
-int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
- int regnum, u16 value)
-{
- /* Set the PHY address and the register address we want to write */
- out_be32(&regs->miimadd, (mii_id << 8) | regnum);
-
- /* Write out the value we want */
- out_be32(&regs->miimcon, value);
-
- /* Wait for the transaction to finish */
- while (in_be32(&regs->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 operation
- * done on the bus attached to the local interface,
- * which may be different from the generic mdio bus
- * This is helpful in programming interfaces like
- * the TBI which, in turn, control interfaces like onchip SERDES
- * and are always tied to the local mdio pins, which may not be the
- * same as system mdio bus, used for controlling the external PHYs, for eg.
- */
-int fsl_pq_local_mdio_read(struct fsl_pq_mdio __iomem *regs,
- int mii_id, int regnum)
-{
- u16 value;
-
- /* Set the PHY address and the register address we want to read */
- out_be32(&regs->miimadd, (mii_id << 8) | regnum);
-
- /* Clear miimcom, and then initiate a read */
- out_be32(&regs->miimcom, 0);
- out_be32(&regs->miimcom, MII_READ_COMMAND);
-
- /* Wait for the transaction to finish */
- while (in_be32(&regs->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY))
- cpu_relax();
-
- /* Grab the value of the register from miimstat */
- value = in_be32(&regs->miimstat);
-
- return value;
-}
-
-static struct fsl_pq_mdio __iomem *fsl_pq_mdio_get_regs(struct mii_bus *bus)
-{
- struct fsl_pq_mdio_priv *priv = bus->priv;
-
- return priv->regs;
-}
-
-/*
- * Write value to the PHY at mii_id at register regnum,
- * on the bus, waiting until the write is done before returning.
- */
-int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value)
-{
- struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
-
- /* Write to the local MII regs */
- return fsl_pq_local_mdio_write(regs, mii_id, regnum, value);
-}
-
-/*
- * Read the bus for PHY at addr mii_id, register regnum, and
- * return the value. Clears miimcom first.
- */
-int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
-{
- struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
-
- /* Read the local MII regs */
- return fsl_pq_local_mdio_read(regs, mii_id, regnum);
-}
-
-/* Reset the MIIM registers, and wait for the bus to free */
-static int fsl_pq_mdio_reset(struct mii_bus *bus)
-{
- struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
- int timeout = PHY_INIT_TIMEOUT;
-
- mutex_lock(&bus->mdio_lock);
-
- /* Reset the management interface */
- out_be32(&regs->miimcfg, MIIMCFG_RESET);
-
- /* Setup the MII Mgmt clock speed */
- out_be32(&regs->miimcfg, MIIMCFG_INIT_VALUE);
-
- /* 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;
-}
-
-void fsl_pq_mdio_bus_name(char *name, struct device_node *np)
-{
- const u32 *addr;
- u64 taddr = OF_BAD_ADDR;
-
- addr = of_get_address(np, 0, NULL, NULL);
- if (addr)
- taddr = of_translate_address(np, addr);
-
- snprintf(name, MII_BUS_ID_SIZE, "%s@%llx", np->name,
- (unsigned long long)taddr);
-}
-EXPORT_SYMBOL_GPL(fsl_pq_mdio_bus_name);
-
-/* Scan the bus in reverse, looking for an empty spot */
-static int fsl_pq_mdio_find_free(struct mii_bus *new_bus)
-{
- int i;
-
- for (i = PHY_MAX_ADDR; i > 0; i--) {
- u32 phy_id;
-
- if (get_phy_id(new_bus, i, &phy_id))
- return -1;
-
- if (phy_id == 0xffffffff)
- break;
- }
-
- return i;
-}
-
-
-#if defined(CONFIG_GIANFAR) || defined(CONFIG_GIANFAR_MODULE)
-static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct device_node *np)
-{
- struct gfar __iomem *enet_regs;
-
- /*
- * This is mildly evil, but so is our hardware for doing this.
- * Also, we have to cast back to struct gfar because of
- * definition weirdness done in gianfar.h.
- */
- if(of_device_is_compatible(np, "fsl,gianfar-mdio") ||
- of_device_is_compatible(np, "fsl,gianfar-tbi") ||
- of_device_is_compatible(np, "gianfar")) {
- enet_regs = (struct gfar __iomem *)regs;
- return &enet_regs->tbipa;
- } else if (of_device_is_compatible(np, "fsl,etsec2-mdio") ||
- of_device_is_compatible(np, "fsl,etsec2-tbi")) {
- return of_iomap(np, 1);
- } else
- return NULL;
-}
-#endif
-
-
-#if defined(CONFIG_UCC_GETH) || defined(CONFIG_UCC_GETH_MODULE)
-static int get_ucc_id_for_range(u64 start, u64 end, u32 *ucc_id)
-{
- struct device_node *np = NULL;
- int err = 0;
-
- for_each_compatible_node(np, NULL, "ucc_geth") {
- struct resource tempres;
-
- err = of_address_to_resource(np, 0, &tempres);
- if (err)
- continue;
-
- /* if our mdio regs fall within this UCC regs range */
- if ((start >= tempres.start) && (end <= tempres.end)) {
- /* Find the id of the UCC */
- const u32 *id;
-
- id = of_get_property(np, "cell-index", NULL);
- if (!id) {
- id = of_get_property(np, "device-id", NULL);
- if (!id)
- continue;
- }
-
- *ucc_id = *id;
-
- return 0;
- }
- }
-
- if (err)
- return err;
- else
- return -EINVAL;
-}
-#endif
-
-
-static int fsl_pq_mdio_probe(struct platform_device *ofdev)
-{
- struct device_node *np = ofdev->dev.of_node;
- struct device_node *tbi;
- struct fsl_pq_mdio_priv *priv;
- struct fsl_pq_mdio __iomem *regs = NULL;
- void __iomem *map;
- u32 __iomem *tbipa;
- struct mii_bus *new_bus;
- int tbiaddr = -1;
- const u32 *addrp;
- u64 addr = 0, size = 0;
- int err;
-
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- new_bus = mdiobus_alloc();
- if (!new_bus) {
- err = -ENOMEM;
- goto err_free_priv;
- }
-
- new_bus->name = "Freescale PowerQUICC MII Bus",
- new_bus->read = &fsl_pq_mdio_read,
- new_bus->write = &fsl_pq_mdio_write,
- new_bus->reset = &fsl_pq_mdio_reset,
- new_bus->priv = priv;
- fsl_pq_mdio_bus_name(new_bus->id, np);
-
- addrp = of_get_address(np, 0, &size, NULL);
- if (!addrp) {
- err = -EINVAL;
- goto err_free_bus;
- }
-
- /* Set the PHY base address */
- addr = of_translate_address(np, addrp);
- if (addr == OF_BAD_ADDR) {
- err = -EINVAL;
- goto err_free_bus;
- }
-
- map = ioremap(addr, size);
- if (!map) {
- err = -ENOMEM;
- goto err_free_bus;
- }
- priv->map = map;
-
- if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
- of_device_is_compatible(np, "fsl,gianfar-tbi") ||
- of_device_is_compatible(np, "fsl,ucc-mdio") ||
- of_device_is_compatible(np, "ucc_geth_phy"))
- map -= offsetof(struct fsl_pq_mdio, miimcfg);
- regs = map;
- priv->regs = regs;
-
- new_bus->irq = kcalloc(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL);
-
- if (NULL == new_bus->irq) {
- err = -ENOMEM;
- goto err_unmap_regs;
- }
-
- new_bus->parent = &ofdev->dev;
- dev_set_drvdata(&ofdev->dev, new_bus);
-
- if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
- of_device_is_compatible(np, "fsl,gianfar-tbi") ||
- of_device_is_compatible(np, "fsl,etsec2-mdio") ||
- of_device_is_compatible(np, "fsl,etsec2-tbi") ||
- of_device_is_compatible(np, "gianfar")) {
-#if defined(CONFIG_GIANFAR) || defined(CONFIG_GIANFAR_MODULE)
- tbipa = get_gfar_tbipa(regs, np);
- if (!tbipa) {
- err = -EINVAL;
- goto err_free_irqs;
- }
-#else
- err = -ENODEV;
- goto err_free_irqs;
-#endif
- } else if (of_device_is_compatible(np, "fsl,ucc-mdio") ||
- of_device_is_compatible(np, "ucc_geth_phy")) {
-#if defined(CONFIG_UCC_GETH) || defined(CONFIG_UCC_GETH_MODULE)
- u32 id;
- static u32 mii_mng_master;
-
- tbipa = &regs->utbipar;
-
- if ((err = get_ucc_id_for_range(addr, addr + size, &id)))
- goto err_free_irqs;
-
- if (!mii_mng_master) {
- mii_mng_master = id;
- ucc_set_qe_mux_mii_mng(id - 1);
- }
-#else
- err = -ENODEV;
- goto err_free_irqs;
-#endif
- } else {
- err = -ENODEV;
- goto err_free_irqs;
- }
-
- for_each_child_of_node(np, tbi) {
- if (!strncmp(tbi->type, "tbi-phy", 8))
- break;
- }
-
- if (tbi) {
- const u32 *prop = of_get_property(tbi, "reg", NULL);
-
- if (prop)
- tbiaddr = *prop;
- }
-
- if (tbiaddr == -1) {
- out_be32(tbipa, 0);
-
- tbiaddr = fsl_pq_mdio_find_free(new_bus);
- }
-
- /*
- * We define TBIPA at 0 to be illegal, opting to fail for boards that
- * have PHYs at 1-31, rather than change tbipa and rescan.
- */
- if (tbiaddr == 0) {
- err = -EBUSY;
-
- goto err_free_irqs;
- }
-
- out_be32(tbipa, tbiaddr);
-
- err = of_mdiobus_register(new_bus, np);
- if (err) {
- printk (KERN_ERR "%s: Cannot register as MDIO bus\n",
- new_bus->name);
- goto err_free_irqs;
- }
-
- return 0;
-
-err_free_irqs:
- kfree(new_bus->irq);
-err_unmap_regs:
- iounmap(priv->map);
-err_free_bus:
- kfree(new_bus);
-err_free_priv:
- kfree(priv);
- return err;
-}
-
-
-static int fsl_pq_mdio_remove(struct platform_device *ofdev)
-{
- struct device *device = &ofdev->dev;
- struct mii_bus *bus = dev_get_drvdata(device);
- struct fsl_pq_mdio_priv *priv = bus->priv;
-
- mdiobus_unregister(bus);
-
- dev_set_drvdata(device, NULL);
-
- iounmap(priv->map);
- bus->priv = NULL;
- mdiobus_free(bus);
- kfree(priv);
-
- return 0;
-}
-
-static struct of_device_id fsl_pq_mdio_match[] = {
- {
- .type = "mdio",
- .compatible = "ucc_geth_phy",
- },
- {
- .type = "mdio",
- .compatible = "gianfar",
- },
- {
- .compatible = "fsl,ucc-mdio",
- },
- {
- .compatible = "fsl,gianfar-tbi",
- },
- {
- .compatible = "fsl,gianfar-mdio",
- },
- {
- .compatible = "fsl,etsec2-tbi",
- },
- {
- .compatible = "fsl,etsec2-mdio",
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, fsl_pq_mdio_match);
-
-static struct platform_driver fsl_pq_mdio_driver = {
- .driver = {
- .name = "fsl-pq_mdio",
- .owner = THIS_MODULE,
- .of_match_table = fsl_pq_mdio_match,
- },
- .probe = fsl_pq_mdio_probe,
- .remove = fsl_pq_mdio_remove,
-};
-
-int __init fsl_pq_mdio_init(void)
-{
- return platform_driver_register(&fsl_pq_mdio_driver);
-}
-module_init(fsl_pq_mdio_init);
-
-void fsl_pq_mdio_exit(void)
-{
- platform_driver_unregister(&fsl_pq_mdio_driver);
-}
-module_exit(fsl_pq_mdio_exit);
-MODULE_LICENSE("GPL");