#include <module.h>
#include <linux/types.h>
#include <io.h>

/*
 * Copy data from IO memory space to "real" memory space.
 * This needs to be optimized.
 */
void memcpy_fromio(void *to, const volatile void __iomem *from, size_t count)
{
	unsigned char *t = to;
	while (count) {
		count--;
		*t = readb(from);
		t++;
		from++;
	}
}

/*
 * Copy data from "real" memory space to IO memory space.
 * This needs to be optimized.
 */
void memcpy_toio(volatile void __iomem *to, const void *from, size_t count)
{
	const unsigned char *f = from;
	while (count) {
		count--;
		writeb(*f, to);
		f++;
		to++;
	}
}

/*
 * "memset" on IO memory space.
 * This needs to be optimized.
 */
void memset_io(volatile void __iomem *dst, int c, size_t count)
{
	while (count) {
		count--;
		writeb(c, dst);
		dst++;
	}
}

EXPORT_SYMBOL(memcpy_fromio);
EXPORT_SYMBOL(memcpy_toio);
EXPORT_SYMBOL(memset_io);