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/*
* $Id: rpxlite.c,v 1.15 2001/10/02 15:05:14 dwmw2 Exp $
*
* Handle mapping of the flash on the RPX Lite and CLLF boards
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#define WINDOW_ADDR 0xfe000000
#define WINDOW_SIZE 0x800000
static struct mtd_info *mymtd;
__u8 rpxlite_read8(struct map_info *map, unsigned long ofs)
{
return __raw_readb(map->map_priv_1 + ofs);
}
__u16 rpxlite_read16(struct map_info *map, unsigned long ofs)
{
return __raw_readw(map->map_priv_1 + ofs);
}
__u32 rpxlite_read32(struct map_info *map, unsigned long ofs)
{
return __raw_readl(map->map_priv_1 + ofs);
}
void rpxlite_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
memcpy_fromio(to, (void *)(map->map_priv_1 + from), len);
}
void rpxlite_write8(struct map_info *map, __u8 d, unsigned long adr)
{
__raw_writeb(d, map->map_priv_1 + adr);
mb();
}
void rpxlite_write16(struct map_info *map, __u16 d, unsigned long adr)
{
__raw_writew(d, map->map_priv_1 + adr);
mb();
}
void rpxlite_write32(struct map_info *map, __u32 d, unsigned long adr)
{
__raw_writel(d, map->map_priv_1 + adr);
mb();
}
void rpxlite_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
memcpy_toio((void *)(map->map_priv_1 + to), from, len);
}
struct map_info rpxlite_map = {
name: "RPX",
size: WINDOW_SIZE,
buswidth: 4,
read8: rpxlite_read8,
read16: rpxlite_read16,
read32: rpxlite_read32,
copy_from: rpxlite_copy_from,
write8: rpxlite_write8,
write16: rpxlite_write16,
write32: rpxlite_write32,
copy_to: rpxlite_copy_to
};
int __init init_rpxlite(void)
{
printk(KERN_NOTICE "RPX Lite or CLLF flash device: %x at %x\n", WINDOW_SIZE*4, WINDOW_ADDR);
rpxlite_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
if (!rpxlite_map.map_priv_1) {
printk("Failed to ioremap\n");
return -EIO;
}
mymtd = do_map_probe("cfi_probe", &rpxlite_map);
if (mymtd) {
mymtd->module = THIS_MODULE;
add_mtd_device(mymtd);
return 0;
}
iounmap((void *)rpxlite_map.map_priv_1);
return -ENXIO;
}
static void __exit cleanup_rpxlite(void)
{
if (mymtd) {
del_mtd_device(mymtd);
map_destroy(mymtd);
}
if (rpxlite_map.map_priv_1) {
iounmap((void *)rpxlite_map.map_priv_1);
rpxlite_map.map_priv_1 = 0;
}
}
module_init(init_rpxlite);
module_exit(cleanup_rpxlite);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Arnold Christensen <AKC@pel.dk>");
MODULE_DESCRIPTION("MTD map driver for RPX Lite and CLLF boards");
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