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/*
* Common code to handle map devices which are simple ROM
* (C) 2000 Red Hat. GPL'd.
* $Id: map_rom.c,v 1.2 2000/07/03 10:01:38 dwmw2 Exp $
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <linux/errno.h>
#include <linux/malloc.h>
#include <linux/mtd/map.h>
static int maprom_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static void maprom_nop (struct mtd_info *);
struct mtd_info *map_rom_probe(struct map_info *);
EXPORT_SYMBOL(map_rom_probe);
struct mtd_info *map_rom_probe(struct map_info *map)
{
struct mtd_info *mtd;
mtd = kmalloc(sizeof(*mtd), GFP_KERNEL);
if (!mtd)
return NULL;
memset(mtd, 0, sizeof(*mtd));
map->fldrv_destroy = maprom_nop;
mtd->priv = map;
mtd->name = map->name;
mtd->type = MTD_ROM;
mtd->size = map->size;
mtd->read = maprom_read;
mtd->sync = maprom_nop;
mtd->flags = MTD_CAP_ROM;
MOD_INC_USE_COUNT;
return mtd;
}
static int maprom_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
{
struct map_info *map = (struct map_info *)mtd->priv;
map->copy_from(map, buf, from, len);
*retlen = len;
return 0;
}
static void maprom_nop(struct mtd_info *mtd)
{
/* Nothing to see here */
}
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