New, more complete version.
This commit is contained in:
mycroft
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/*
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* Mach Operating System
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* Copyright (c) 1990 Carnegie-Mellon University
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* All rights reserved. The CMU software License Agreement specifies
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* the terms and conditions for use and redistribution.
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* Copyright (c) 1993 Charles Hannum.
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* All rights reserved.
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*
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* $Id: pio.h,v 1.3 1993/06/06 04:16:22 cgd Exp $
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*/
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/*
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* HISTORY
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* $Log: pio.h,v $
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* Revision 1.3 1993/06/06 04:16:22 cgd
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* incorporate Bruce Evans' interrupt changes, as hacked by Rod grimes,
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* for patchkit patch 158. it appears to work well.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* Revision 1.2 1993/05/22 08:00:27 cgd
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* add rcsids to everything and clean up headers
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*
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* Revision 1.1 1993/03/21 18:09:48 cgd
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* after 0.2.2 "stable" patches applied
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*
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* Revision 1.1 1992/05/27 00:48:30 balsup
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* machkern/cor merge
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*
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* Revision 1.1 1991/10/10 20:11:39 balsup
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* Initial revision
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*
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* Revision 2.2 91/04/02 11:52:29 mbj
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* [90/08/14 mg32]
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*
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* Now we know how types are factor in.
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* Cleaned up a bunch: eliminated ({ for output and flushed unused
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* output variables.
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* [90/08/14 rvb]
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*
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* This is how its done in gcc:
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* Created.
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* [90/03/26 rvb]
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: pio.h,v 1.4 1993/12/20 09:07:22 mycroft Exp $
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*/
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#define inl(y) \
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({ unsigned long _tmp__; \
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asm volatile("inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
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_tmp__; })
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#define inw(y) \
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({ unsigned short _tmp__; \
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asm volatile(".byte 0x66; inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
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_tmp__; })
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/*
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* only do this if it has not already be defined.. this is a crock for the
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* patch kit for right now. Need to clean up all the inx, outx stuff for
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* 0.1.5 to use 1 common header file, that has Bruces fast mode inb/outb
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* stuff in it. Rgrimes 5/27/93
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* Functions to provide access to i386 programmed I/O instructions.
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*/
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#ifndef inb
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#define inb(y) \
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({ unsigned char _tmp__; \
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asm volatile("inb %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
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_tmp__; })
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#endif
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static __inline u_char
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inb(u_short port)
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{
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u_char data;
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__asm __volatile("inb %1,%0" : "=a" (data) : "d" (port));
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return data;
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}
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#define outl(x, y) \
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{ asm volatile("outl %0, %1" : : "a" (y) , "d" ((unsigned short)(x))); }
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static __inline void
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insb(u_short port, void *addr, int cnt)
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{
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__asm __volatile("cld\n\trep\n\tinsb" :
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: "d" (port), "D" (addr), "c" (cnt) : "D", "c");
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}
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static __inline u_short
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inw(u_short port)
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{
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u_short data;
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__asm __volatile("inw %1,%0" : "=a" (data) : "d" (port));
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return data;
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}
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#define outw(x, y) \
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{asm volatile(".byte 0x66; outl %0, %1" : : "a" ((unsigned short)(y)) , "d" ((unsigned short)(x))); }
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static __inline void
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insw(u_short port, void *addr, int cnt)
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{
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__asm __volatile("cld\n\trep\n\tinsw" :
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: "d" (port), "D" (addr), "c" (cnt) : "D", "c");
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}
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static __inline u_int
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inl(u_short port)
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{
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u_int data;
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__asm __volatile("inl %1,%0" : "=a" (data) : "d" (port));
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return data;
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}
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#define outb(x, y) \
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{ asm volatile("outb %0, %1" : : "a" ((unsigned char)(y)) , "d" ((unsigned short)(x))); }
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static __inline void
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insl(u_short port, void *addr, int cnt)
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{
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__asm __volatile("cld\n\trep\n\tinsl" :
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: "d" (port), "D" (addr), "c" (cnt) : "D", "c");
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}
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static __inline void
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outb(u_short port, u_char data)
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{
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__asm __volatile("outb %0,%1" : : "a" (data), "d" (port));
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}
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static __inline void
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outsb(u_short port, void *addr, int cnt)
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{
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__asm __volatile("cld\n\trep\n\toutsb" :
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: "d" (port), "S" (addr), "c" (cnt) : "S", "c");
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}
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static __inline void
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outw(u_short port, u_short data)
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{
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__asm __volatile("outw %0,%1" : : "a" (data), "d" (port));
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}
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static __inline void
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outsw(u_short port, void *addr, int cnt)
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{
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__asm __volatile("cld\n\trep\n\toutsw" :
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: "d" (port), "S" (addr), "c" (cnt) : "S", "c");
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}
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static __inline void
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outl(u_short port, u_int data)
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{
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__asm __volatile("outl %0,%1" : : "a" (data), "d" (port));
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}
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static __inline void
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outsl(u_short port, void *addr, int cnt)
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{
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__asm __volatile("cld\n\trep\n\toutsl" :
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: "d" (port), "S" (addr), "c" (cnt) : "S", "c");
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}
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