diff options
author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-06-11 02:29:36 -0700 |
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committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-12 00:22:12 -0700 |
commit | ec21e2ec367697b4803e82662bdff6c8567745fc (patch) | |
tree | cdb42f597ff5e60516bdab59d306006fd1fafd1c /drivers/net/fsl_pq_mdio.c | |
parent | 5346ebf6db077d963e9d81af9df290d7f5532492 (diff) | |
download | linux-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.c | 494 |
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(®s->miimadd, (mii_id << 8) | regnum); - - /* Write out the value we want */ - out_be32(®s->miimcon, value); - - /* Wait for the transaction to finish */ - while (in_be32(®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 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(®s->miimadd, (mii_id << 8) | regnum); - - /* Clear miimcom, and then initiate a read */ - out_be32(®s->miimcom, 0); - out_be32(®s->miimcom, MII_READ_COMMAND); - - /* Wait for the transaction to finish */ - while (in_be32(®s->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY)) - cpu_relax(); - - /* Grab the value of the register from miimstat */ - value = in_be32(®s->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(®s->miimcfg, MIIMCFG_RESET); - - /* Setup the MII Mgmt clock speed */ - out_be32(®s->miimcfg, MIIMCFG_INIT_VALUE); - - /* Wait until the bus is free */ - while ((in_be32(®s->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 = ®s->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"); |