projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 7dc7e04a WN |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * William Jolitz. | |
| 7 | * | |
| 8 | * %sccs.include.noredist.c% | |
| 9 | * | |
| 10 | * @(#)isa.h 5.1 (Berkeley) %G% | |
| 11 | */ | |
| 12 | ||
| 13 | /* | |
| 14 | * AT bus specific definitions. | |
| 15 | */ | |
| 16 | ||
| 17 | #define Rd(s) ({u_char rtn; u_short ioa; \ | |
| 18 | ioa = (s); \ | |
| 19 | asm volatile ("movw %1,%%dx; nop ; in %%dx,%%al ; nop ; movb %%al,%0" \ | |
| 20 | : "=g" (rtn) \ | |
| 21 | : "g" (ioa) \ | |
| 22 | : "ax", "dx"); \ | |
| 23 | rtn; \ | |
| 24 | }) | |
| 25 | ||
| 26 | #define Wr(s,n) ({u_char val; u_short ioa; \ | |
| 27 | ioa = (s); \ | |
| 28 | val = (n); \ | |
| 29 | asm volatile ("movb %1,%%al; movw %0,%%dx; nop; out %%al,%%dx ; nop" \ | |
| 30 | : /* nothing returned */ \ | |
| 31 | : "g" (ioa), "g" (val) \ | |
| 32 | : "ax", "dx"); \ | |
| 33 | }) | |
| 34 | ||
| 35 | ||
| 36 | #define rdw(s) ({u_short rtn; u_short ioa; \ | |
| 37 | ioa = (s); \ | |
| 38 | asm volatile ("movw %1,%%dx; nop ; in %%dx,%%ax ; nop ; movw %%ax,%0" \ | |
| 39 | : "=g" (rtn) \ | |
| 40 | : "g" (ioa) \ | |
| 41 | : "ax", "dx"); \ | |
| 42 | rtn; \ | |
| 43 | }) | |
| 44 | ||
| 45 | #define wrw(s,n) ({u_short val; u_short ioa; \ | |
| 46 | ioa = (s); \ | |
| 47 | val = (n); \ | |
| 48 | asm volatile ("movw %1,%%ax; movw %0,%%dx; nop; out %%ax,%%dx; nop" \ | |
| 49 | : /* nothing returned */ \ | |
| 50 | : "g" (ioa), "g" (val) \ | |
| 51 | : "ax", "dx"); \ | |
| 52 | }) | |
| 53 | ||
| 54 | #define Outsw(s,a, n) ({short *addr; u_short ioa; int cnt,rtn; \ | |
| 55 | ioa = (s); \ | |
| 56 | addr = (a); \ | |
| 57 | cnt = (n); \ | |
| 58 | asm volatile ("movw %1,%%dx; movl %2,%%esi; movl %3,%%ecx; cld; nop; .byte 0x66,0xf2,0x6f; nop ; movl %%esi,%0" \ | |
| 59 | : "=g" (rtn) \ | |
| 60 | : "g" (ioa), "g" (addr), "g" (cnt) \ | |
| 61 | : "si", "dx", "cx"); \ | |
| 62 | rtn; \ | |
| 63 | }) | |
| 64 | #define Insw(s,a, n) ({short *addr; u_short ioa; int cnt,rtn; \ | |
| 65 | ioa = (s); \ | |
| 66 | addr = (a); \ | |
| 67 | cnt = (n); \ | |
| 68 | asm volatile ("movw %1,%%dx; movl %2,%%edi; movl %3,%%ecx; cld; nop; .byte 0x66,0xf2,0x6d; nop ; movl %%edi,%0" \ | |
| 69 | : "=g" (rtn) \ | |
| 70 | : "g" (ioa), "g" (addr), "g" (cnt) \ | |
| 71 | : "di", "dx", "cx"); \ | |
| 72 | rtn; \ | |
| 73 | }) | |
| 74 | ||
| 75 | unsigned char inb() ; | |
| 76 | extern outb(); | |
| 77 | ||
| 78 | #define IO_KBD1 0x60 /* keyboard */ | |
| 79 | ||
| 80 | #define IO_WD0 0x1f0 /* primary base i/o address */ | |
| 81 | #define IO_WD1 0x170 /* secondary base i/o address */ |