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This commit is contained in:
mycroft 1993-12-20 09:07:22 +00:00
parent f2a0b4b335
commit de04e7e727
1 changed files with 108 additions and 65 deletions
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173
sys/arch/i386/include/pio.h
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@ -1,76 +1,119 @@
/* /*
* Mach Operating System * Copyright (c) 1993 Charles Hannum.
* Copyright (c) 1990 Carnegie-Mellon University * All rights reserved.
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
* *
* $Id: pio.h,v 1.3 1993/06/06 04:16:22 cgd Exp $ * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: pio.h,v 1.4 1993/12/20 09:07:22 mycroft Exp $
*/ */
/*
* HISTORY
* $Log: pio.h,v $
* Revision 1.3 1993/06/06 04:16:22 cgd
* incorporate Bruce Evans' interrupt changes, as hacked by Rod grimes,
* for patchkit patch 158. it appears to work well.
*
* Revision 1.2 1993/05/22 08:00:27 cgd
* add rcsids to everything and clean up headers
*
* Revision 1.1 1993/03/21 18:09:48 cgd
* after 0.2.2 "stable" patches applied
*
* Revision 1.1 1992/05/27 00:48:30 balsup
* machkern/cor merge
*
* Revision 1.1 1991/10/10 20:11:39 balsup
* Initial revision
*
* Revision 2.2 91/04/02 11:52:29 mbj
* [90/08/14 mg32]
*
* Now we know how types are factor in.
* Cleaned up a bunch: eliminated ({ for output and flushed unused
* output variables.
* [90/08/14 rvb]
*
* This is how its done in gcc:
* Created.
* [90/03/26 rvb]
*
*/
#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 * Functions to provide access to i386 programmed I/O instructions.
* 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
static __inline u_char
inb(u_short port)
{
u_char data;
__asm __volatile("inb %1,%0" : "=a" (data) : "d" (port));
return data;
}
#define outl(x, y) \ static __inline void
{ asm volatile("outl %0, %1" : : "a" (y) , "d" ((unsigned short)(x))); } insb(u_short port, void *addr, int cnt)
{
__asm __volatile("cld\n\trep\n\tinsb" :
: "d" (port), "D" (addr), "c" (cnt) : "D", "c");
}
static __inline u_short
inw(u_short port)
{
u_short data;
__asm __volatile("inw %1,%0" : "=a" (data) : "d" (port));
return data;
}
#define outw(x, y) \ static __inline void
{asm volatile(".byte 0x66; outl %0, %1" : : "a" ((unsigned short)(y)) , "d" ((unsigned short)(x))); } insw(u_short port, void *addr, int cnt)
{
__asm __volatile("cld\n\trep\n\tinsw" :
: "d" (port), "D" (addr), "c" (cnt) : "D", "c");
}
static __inline u_int
inl(u_short port)
{
u_int data;
__asm __volatile("inl %1,%0" : "=a" (data) : "d" (port));
return data;
}
#define outb(x, y) \ static __inline void
{ asm volatile("outb %0, %1" : : "a" ((unsigned char)(y)) , "d" ((unsigned short)(x))); } insl(u_short port, void *addr, int cnt)
{
__asm __volatile("cld\n\trep\n\tinsl" :
: "d" (port), "D" (addr), "c" (cnt) : "D", "c");
}
static __inline void
outb(u_short port, u_char data)
{
__asm __volatile("outb %0,%1" : : "a" (data), "d" (port));
}
static __inline void
outsb(u_short port, void *addr, int cnt)
{
__asm __volatile("cld\n\trep\n\toutsb" :
: "d" (port), "S" (addr), "c" (cnt) : "S", "c");
}
static __inline void
outw(u_short port, u_short data)
{
__asm __volatile("outw %0,%1" : : "a" (data), "d" (port));
}
static __inline void
outsw(u_short port, void *addr, int cnt)
{
__asm __volatile("cld\n\trep\n\toutsw" :
: "d" (port), "S" (addr), "c" (cnt) : "S", "c");
}
static __inline void
outl(u_short port, u_int data)
{
__asm __volatile("outl %0,%1" : : "a" (data), "d" (port));
}
static __inline void
outsl(u_short port, void *addr, int cnt)
{
__asm __volatile("cld\n\trep\n\toutsl" :
: "d" (port), "S" (addr), "c" (cnt) : "S", "c");
}