/*
 * libportio.c --- User mode library for Linux port I/O device driver.
 *
 * Author:  William Lavender
 *
 *----------------------------------------------------------------------
 *
 * Copyright 1999 Illinois Institute of Technology
 *
 * See the file "LICENSE" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 */

#include <stddef.h>
#include <asm/types.h>
#include <sys/ioctl.h>
#include <linux/errno.h>

#include "portio.h"

int
portio_outb( int fd, __u8 value, __u16 address )
{
	portio_message temp;
	int status;

	temp.address = address;
	temp.arg.byte = value;

	status = ioctl( fd, PORTIO_OUTB_IOCTL, (void *) &temp );

	return status;
}

int
portio_outw( int fd, __u16 value, __u16 address )
{
	portio_message temp;
	int status;

	temp.address = address;
	temp.arg.word = value;

	status = ioctl( fd, PORTIO_OUTW_IOCTL, (void *) &temp );

	return status;
}

int
portio_inb( int fd, __u8 *value, __u16 address )
{
	portio_message temp;
	int status;

	if ( value == NULL )
		return EINVAL;

	temp.address = address;

	status = ioctl( fd, PORTIO_INB_IOCTL, (void *) &temp );

	if ( status == 0 ) {
		*value = temp.arg.byte;
	}
	return status;
}

int
portio_inw( int fd, __u16 *value, __u16 address )
{
	portio_message temp;
	int status;

	if ( value == NULL )
		return EINVAL;

	temp.address = address;

	status = ioctl( fd, PORTIO_INW_IOCTL, (void *) &temp );

	if ( status == 0 ) {
		*value = temp.arg.word;
	}
	return status;
}

int
portio_getmap( int fd, portio_permission_map *map )
{
	return ioctl( fd, PORTIO_GETMAP_IOCTL, (void *) map );
}