Commit b08a25ad authored by Artem Bityutskiy's avatar Artem Bityutskiy Committed by David Woodhouse
Browse files

mtd: remove the ixp2000 map driver



This driver depends on CONFIG_IXP2000 which is not defined anywhere, which
means this driver is dead.
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent bece641c
......@@ -297,15 +297,6 @@ config MTD_IXP4XX
IXDP425 and Coyote. If you have an IXP4xx based board and
would like to use the flash chips on it, say 'Y'.
config MTD_IXP2000
tristate "CFI Flash device mapped on Intel IXP2000 based systems"
depends on MTD_CFI && MTD_COMPLEX_MAPPINGS && ARCH_IXP2000
help
This enables MTD access to flash devices on platforms based
on Intel's IXP2000 family of network processors. If you have an
IXP2000 based board and would like to use the flash chips on it,
say 'Y'.
config MTD_AUTCPU12
bool "NV-RAM mapping AUTCPU12 board"
depends on ARCH_AUTCPU12
......
......@@ -39,7 +39,6 @@ obj-$(CONFIG_MTD_NETtel) += nettel.o
obj-$(CONFIG_MTD_SCB2_FLASH) += scb2_flash.o
obj-$(CONFIG_MTD_H720X) += h720x-flash.o
obj-$(CONFIG_MTD_IXP4XX) += ixp4xx.o
obj-$(CONFIG_MTD_IXP2000) += ixp2000.o
obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o
obj-$(CONFIG_MTD_INTEL_VR_NOR) += intel_vr_nor.o
obj-$(CONFIG_MTD_BFIN_ASYNC) += bfin-async-flash.o
......
/*
* drivers/mtd/maps/ixp2000.c
*
* Mapping for the Intel XScale IXP2000 based systems
*
* Copyright (C) 2002 Intel Corp.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* Original Author: Naeem M Afzal <naeem.m.afzal@intel.com>
* Maintainer: Deepak Saxena <dsaxena@plexity.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>
#include <mach/hardware.h>
#include <asm/mach/flash.h>
#include <linux/reboot.h>
struct ixp2000_flash_info {
struct mtd_info *mtd;
struct map_info map;
struct resource *res;
};
static inline unsigned long flash_bank_setup(struct map_info *map, unsigned long ofs)
{
unsigned long (*set_bank)(unsigned long) =
(unsigned long(*)(unsigned long))map->map_priv_2;
return (set_bank ? set_bank(ofs) : ofs);
}
#ifdef __ARMEB__
/*
* Rev A0 and A1 of IXP2400 silicon have a broken addressing unit which
* causes the lower address bits to be XORed with 0x11 on 8 bit accesses
* and XORed with 0x10 on 16 bit accesses. See the spec update, erratum 44.
*/
static int erratum44_workaround = 0;
static inline unsigned long address_fix8_write(unsigned long addr)
{
if (erratum44_workaround) {
return (addr ^ 3);
}
return addr;
}
#else
#define address_fix8_write(x) (x)
#endif
static map_word ixp2000_flash_read8(struct map_info *map, unsigned long ofs)
{
map_word val;
val.x[0] = *((u8 *)(map->map_priv_1 + flash_bank_setup(map, ofs)));
return val;
}
/*
* We can't use the standard memcpy due to the broken SlowPort
* address translation on rev A0 and A1 silicon and the fact that
* we have banked flash.
*/
static void ixp2000_flash_copy_from(struct map_info *map, void *to,
unsigned long from, ssize_t len)
{
from = flash_bank_setup(map, from);
while(len--)
*(__u8 *) to++ = *(__u8 *)(map->map_priv_1 + from++);
}
static void ixp2000_flash_write8(struct map_info *map, map_word d, unsigned long ofs)
{
*(__u8 *) (address_fix8_write(map->map_priv_1 +
flash_bank_setup(map, ofs))) = d.x[0];
}
static void ixp2000_flash_copy_to(struct map_info *map, unsigned long to,
const void *from, ssize_t len)
{
to = flash_bank_setup(map, to);
while(len--) {
unsigned long tmp = address_fix8_write(map->map_priv_1 + to++);
*(__u8 *)(tmp) = *(__u8 *)(from++);
}
}
static int ixp2000_flash_remove(struct platform_device *dev)
{
struct flash_platform_data *plat = dev->dev.platform_data;
struct ixp2000_flash_info *info = platform_get_drvdata(dev);
platform_set_drvdata(dev, NULL);
if(!info)
return 0;
if (info->mtd) {
mtd_device_unregister(info->mtd);
map_destroy(info->mtd);
}
if (info->map.map_priv_1)
iounmap((void *) info->map.map_priv_1);
if (info->res) {
release_resource(info->res);
kfree(info->res);
}
if (plat->exit)
plat->exit();
return 0;
}
static int ixp2000_flash_probe(struct platform_device *dev)
{
static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
struct ixp2000_flash_data *ixp_data = dev->dev.platform_data;
struct flash_platform_data *plat;
struct ixp2000_flash_info *info;
unsigned long window_size;
int err = -1;
if (!ixp_data)
return -ENODEV;
plat = ixp_data->platform_data;
if (!plat)
return -ENODEV;
window_size = resource_size(dev->resource);
dev_info(&dev->dev, "Probe of IXP2000 flash(%d banks x %dMiB)\n",
ixp_data->nr_banks, ((u32)window_size >> 20));
if (plat->width != 1) {
dev_err(&dev->dev, "IXP2000 MTD map only supports 8-bit mode, asking for %d\n",
plat->width * 8);
return -EIO;
}
info = kzalloc(sizeof(struct ixp2000_flash_info), GFP_KERNEL);
if(!info) {
err = -ENOMEM;
goto Error;
}
platform_set_drvdata(dev, info);
/*
* Tell the MTD layer we're not 1:1 mapped so that it does
* not attempt to do a direct access on us.
*/
info->map.phys = NO_XIP;
info->map.size = ixp_data->nr_banks * window_size;
info->map.bankwidth = 1;
/*
* map_priv_2 is used to store a ptr to the bank_setup routine
*/
info->map.map_priv_2 = (unsigned long) ixp_data->bank_setup;
info->map.name = dev_name(&dev->dev);
info->map.read = ixp2000_flash_read8;
info->map.write = ixp2000_flash_write8;
info->map.copy_from = ixp2000_flash_copy_from;
info->map.copy_to = ixp2000_flash_copy_to;
info->res = request_mem_region(dev->resource->start,
resource_size(dev->resource),
dev_name(&dev->dev));
if (!info->res) {
dev_err(&dev->dev, "Could not reserve memory region\n");
err = -ENOMEM;
goto Error;
}
info->map.map_priv_1 =
(unsigned long)ioremap(dev->resource->start,
resource_size(dev->resource));
if (!info->map.map_priv_1) {
dev_err(&dev->dev, "Failed to ioremap flash region\n");
err = -EIO;
goto Error;
}
#if defined(__ARMEB__)
/*
* Enable erratum 44 workaround for NPUs with broken slowport
*/
erratum44_workaround = ixp2000_has_broken_slowport();
dev_info(&dev->dev, "Erratum 44 workaround %s\n",
erratum44_workaround ? "enabled" : "disabled");
#endif
info->mtd = do_map_probe(plat->map_name, &info->map);
if (!info->mtd) {
dev_err(&dev->dev, "map_probe failed\n");
err = -ENXIO;
goto Error;
}
info->mtd->owner = THIS_MODULE;
err = mtd_device_parse_register(info->mtd, probes, NULL, NULL, 0);
if (err)
goto Error;
return 0;
Error:
ixp2000_flash_remove(dev);
return err;
}
static struct platform_driver ixp2000_flash_driver = {
.probe = ixp2000_flash_probe,
.remove = ixp2000_flash_remove,
.driver = {
.name = "IXP2000-Flash",
.owner = THIS_MODULE,
},
};
module_platform_driver(ixp2000_flash_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
MODULE_ALIAS("platform:IXP2000-Flash");
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