projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* |
| 2 | * Mach Operating System | |
| 3 | * Copyright (c) 1990 Carnegie-Mellon University | |
| 4 | * All rights reserved. The CMU software License Agreement specifies | |
| 5 | * the terms and conditions for use and redistribution. | |
| 15637ed4 | 6 | * |
| db11a0e0 | 7 | * from: Mach, unknown, 386BSD patch kit |
| 126bd309 | 8 | * $Id: pio.h,v 1.2 1993/10/16 14:39:23 rgrimes Exp $ |
| 15637ed4 RG |
9 | */ |
| 10 | ||
| 126bd309 GW |
11 | #ifndef _MACHINE_PIO_H_ |
| 12 | #define _MACHINE_PIO_H_ 1 | |
| 13 | ||
| 15637ed4 RG |
14 | #define inl(y) \ |
| 15 | ({ unsigned long _tmp__; \ | |
| 16 | asm volatile("inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \ | |
| 17 | _tmp__; }) | |
| 18 | ||
| 19 | #define inw(y) \ | |
| 20 | ({ unsigned short _tmp__; \ | |
| 21 | asm volatile(".byte 0x66; inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \ | |
| 22 | _tmp__; }) | |
| 23 | ||
| 24 | /* | |
| 25 | * only do this if it has not already be defined.. this is a crock for the | |
| 26 | * patch kit for right now. Need to clean up all the inx, outx stuff for | |
| 27 | * 0.1.5 to use 1 common header file, that has Bruces fast mode inb/outb | |
| 28 | * stuff in it. Rgrimes 5/27/93 | |
| 29 | */ | |
| 30 | #ifndef inb | |
| 31 | #define inb(y) \ | |
| 32 | ({ unsigned char _tmp__; \ | |
| 33 | asm volatile("inb %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \ | |
| 34 | _tmp__; }) | |
| 35 | #endif | |
| 36 | ||
| 37 | ||
| 38 | #define outl(x, y) \ | |
| 39 | { asm volatile("outl %0, %1" : : "a" (y) , "d" ((unsigned short)(x))); } | |
| 40 | ||
| 41 | ||
| 42 | #define outw(x, y) \ | |
| 43 | {asm volatile(".byte 0x66; outl %0, %1" : : "a" ((unsigned short)(y)) , "d" ((unsigned short)(x))); } | |
| 44 | ||
| 45 | ||
| 46 | #define outb(x, y) \ | |
| 47 | { asm volatile("outb %0, %1" : : "a" ((unsigned char)(y)) , "d" ((unsigned short)(x))); } | |
| 126bd309 | 48 | #endif /* _MACHINE_PIO_H_ */ |