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/*
* Mach Operating System
* Copyright (c) 1990 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*
* from: Mach, unknown, 386BSD patch kit
* $Id: pio.h,v 1.2 1993/10/16 14:39:23 rgrimes Exp $
*/
#ifndef _MACHINE_PIO_H_
#define _MACHINE_PIO_H_ 1
#define inl(y) \
({ unsigned long _tmp__; \
asm volatile("inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
_tmp__; })
#define inw(y) \
({ unsigned short _tmp__; \
asm volatile(".byte 0x66; inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
_tmp__; })
/*
* only do this if it has not already be defined.. this is a crock for the
* patch kit for right now. Need to clean up all the inx, outx stuff for
* 0.1.5 to use 1 common header file, that has Bruces fast mode inb/outb
* stuff in it. Rgrimes 5/27/93
*/
#ifndef inb
#define inb(y) \
({ unsigned char _tmp__; \
asm volatile("inb %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
_tmp__; })
#endif
#define outl(x, y) \
{ asm volatile("outl %0, %1" : : "a" (y) , "d" ((unsigned short)(x))); }
#define outw(x, y) \
{asm volatile(".byte 0x66; outl %0, %1" : : "a" ((unsigned short)(y)) , "d" ((unsigned short)(x))); }
#define outb(x, y) \
{ asm volatile("outb %0, %1" : : "a" ((unsigned char)(y)) , "d" ((unsigned short)(x))); }
#endif /* _MACHINE_PIO_H_ */
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