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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2000-2003 Silicon Graphics, Inc. All rights reserved.
*/
#include <asm/io.h>
#include <linux/module.h>
extern void * sn_io_addr(unsigned long port); /* defined in sn[12]/iomv.c */
/**
* sn_inb - read a byte from a port
* @port: port to read from
*
* Reads a byte from @port and returns it to the caller.
*/
unsigned int
sn_inb (unsigned long port)
{
volatile unsigned char *addr = sn_io_addr(port);
unsigned char ret;
ret = *addr;
__ia64_mf_a();
return ret;
}
/**
* sn_inw - read a word from a port
* @port: port to read from
*
* Reads a word from @port and returns it to the caller.
*/
unsigned int
sn_inw (unsigned long port)
{
volatile unsigned short *addr = sn_io_addr(port);
unsigned short ret;
ret = *addr;
__ia64_mf_a();
return ret;
}
/**
* sn_inl - read a word from a port
* @port: port to read from
*
* Reads a word from @port and returns it to the caller.
*/
unsigned int
sn_inl (unsigned long port)
{
volatile unsigned int *addr = sn_io_addr(port);
unsigned int ret;
ret = *addr;
__ia64_mf_a();
return ret;
}
/**
* sn_outb - write a byte to a port
* @port: port to write to
* @val: value to write
*
* Writes @val to @port.
*/
void
sn_outb (unsigned char val, unsigned long port)
{
volatile unsigned char *addr = sn_io_addr(port);
*addr = val;
}
/**
* sn_outw - write a word to a port
* @port: port to write to
* @val: value to write
*
* Writes @val to @port.
*/
void
sn_outw (unsigned short val, unsigned long port)
{
volatile unsigned short *addr = sn_io_addr(port);
*addr = val;
}
/**
* sn_outl - write a word to a port
* @port: port to write to
* @val: value to write
*
* Writes @val to @port.
*/
void
sn_outl (unsigned int val, unsigned long port)
{
volatile unsigned int *addr = sn_io_addr(port);
*addr = val;
}
EXPORT_SYMBOL(sn_inb);
EXPORT_SYMBOL(sn_inw);
EXPORT_SYMBOL(sn_inl);
EXPORT_SYMBOL(sn_outb);
EXPORT_SYMBOL(sn_outw);
EXPORT_SYMBOL(sn_outl);
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