aboutsummaryrefslogtreecommitdiff
path: root/drivers/mtd/maps/ixp2000.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/maps/ixp2000.c')
-rw-r--r--drivers/mtd/maps/ixp2000.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c
deleted file mode 100644
index 9639d83a9d6..00000000000
--- a/drivers/mtd/maps/ixp2000.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * 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 mtd_partition *partitions;
- 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) {
- del_mtd_partitions(info->mtd);
- map_destroy(info->mtd);
- }
- if (info->map.map_priv_1)
- iounmap((void *) info->map.map_priv_1);
-
- kfree(info->partitions);
-
- 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 = dev->resource->end - dev->resource->start + 1;
- 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,
- dev->resource->end - dev->resource->start + 1,
- 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,
- dev->resource->end - dev->resource->start + 1);
- 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 = parse_mtd_partitions(info->mtd, probes, &info->partitions, 0);
- if (err > 0) {
- err = add_mtd_partitions(info->mtd, info->partitions, err);
- if(err)
- dev_err(&dev->dev, "Could not parse partitions\n");
- }
-
- 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,
- },
-};
-
-static int __init ixp2000_flash_init(void)
-{
- return platform_driver_register(&ixp2000_flash_driver);
-}
-
-static void __exit ixp2000_flash_exit(void)
-{
- platform_driver_unregister(&ixp2000_flash_driver);
-}
-
-module_init(ixp2000_flash_init);
-module_exit(ixp2000_flash_exit);
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
-MODULE_ALIAS("platform:IXP2000-Flash");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 08:44:39 +0000