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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [ia64/] [lib/] [io.c] - Rev 1765

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#include <linux/config.h>
#include <linux/types.h>
 
#include <asm/io.h>
 
/*
 * Copy data from IO memory space to "real" memory space.
 * This needs to be optimized.
 */
void
__ia64_memcpy_fromio (void * to, unsigned long from, long count)
{
	while (count) {
		count--;
		*(char *) to = readb(from);
		((char *) to)++;
		from++;
	}
}
 
/*
 * Copy data from "real" memory space to IO memory space.
 * This needs to be optimized.
 */
void
__ia64_memcpy_toio (unsigned long to, void * from, long count)
{
	while (count) {
		count--;
		writeb(*(char *) from, to);
		((char *) from)++;
		to++;
	}
}
 
/*
 * "memset" on IO memory space.
 * This needs to be optimized.
 */
void
__ia64_memset_c_io (unsigned long dst, unsigned long c, long count)
{
	unsigned char ch = (char)(c & 0xff);
 
	while (count) {
		count--;
		writeb(ch, dst);
		dst++;
	}
}
 
#ifdef CONFIG_IA64_GENERIC
 
unsigned int
ia64_inb (unsigned long port)
{
	return __ia64_inb(port);
}
 
unsigned int
ia64_inw (unsigned long port)
{
	return __ia64_inw(port);
}
 
unsigned int
ia64_inl (unsigned long port)
{
	return __ia64_inl(port);
}
 
void
ia64_outb (unsigned char val, unsigned long port)
{
	__ia64_outb(val, port);
}
 
void
ia64_outw (unsigned short val, unsigned long port)
{
	__ia64_outw(val, port);
}
 
void
ia64_outl (unsigned int val, unsigned long port)
{
	__ia64_outl(val, port);
}
 
/* define aliases: */
 
asm (".global __ia64_inb, __ia64_inw, __ia64_inl");
asm ("__ia64_inb = ia64_inb");
asm ("__ia64_inw = ia64_inw");
asm ("__ia64_inl = ia64_inl");
 
asm (".global __ia64_outb, __ia64_outw, __ia64_outl");
asm ("__ia64_outb = ia64_outb");
asm ("__ia64_outw = ia64_outw");
asm ("__ia64_outl = ia64_outl");
 
#endif /* CONFIG_IA64_GENERIC */
 

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