11.1Srin/*	$NetBSD: eficpufunc.c,v 1.1 2023/07/24 01:56:59 rin Exp $	*/
21.1Srin
31.1Srin/*-
41.1Srin * Copyright (c) 2023 The NetBSD Foundation, Inc.
51.1Srin * All rights reserved.
61.1Srin *
71.1Srin * Redistribution and use in source and binary forms, with or without
81.1Srin * modification, are permitted provided that the following conditions
91.1Srin * are met:
101.1Srin * 1. Redistributions of source code must retain the above copyright
111.1Srin *    notice, this list of conditions and the following disclaimer.
121.1Srin * 2. Redistributions in binary form must reproduce the above copyright
131.1Srin *    notice, this list of conditions and the following disclaimer in the
141.1Srin *    documentation and/or other materials provided with the distribution.
151.1Srin *
161.1Srin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
171.1Srin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
181.1Srin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
191.1Srin * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
201.1Srin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
211.1Srin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
221.1Srin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
231.1Srin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
241.1Srin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
251.1Srin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
261.1Srin * POSSIBILITY OF SUCH DAMAGE.
271.1Srin */
281.1Srin
291.1Srin#include <sys/cdefs.h>
301.1Srin#include <sys/types.h>
311.1Srin
321.1Srin#include "eficpufunc.h"
331.1Srin
341.1Srinuint8_t
351.1Srininb(uint32_t addr)
361.1Srin{
371.1Srin	uint8_t c;
381.1Srin
391.1Srin	__asm volatile ("inb %%dx, %%al" : "=a"(c) : "d"(addr));
401.1Srin	return c;
411.1Srin}
421.1Srin
431.1Srinvoid
441.1Srinoutb(uint32_t addr, uint8_t c)
451.1Srin{
461.1Srin
471.1Srin	__asm volatile ("outb %%al, %%dx" : : "a"(c), "d"(addr));
481.1Srin}
49