sys/arch/bebox/stand/boot/io.c

   1 /*      $NetBSD: io.c,v 1.5 2005/12/11 12:17:04 christos Exp $  */
   2
   3 /*-
   4  * Copyright (C) 1995-1997 Gary Thomas (gdt@linuxppc.org)
   5  * All rights reserved.
   6  *
   7  * PCI/ISA I/O support
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by Gary Thomas.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <lib/libsa/stand.h>
  36 #include "boot.h"
  37
  38 volatile u_char *ISA_io  = (u_char *)0x80000000;
  39 volatile u_char *ISA_mem = (u_char *)0xC0000000;
  40
  41 void
  42 outb(int port, char val)
  43 {
  44
  45         ISA_io[port] = val;
  46 }
  47
  48 void
  49 outw(int port, u_short val)
  50 {
  51
  52         outb(port, val >> 8);
  53         outb(port + 1, val);
  54 }
  55
  56 u_char
  57 inb(int port)
  58 {
  59
  60         return ISA_io[port];
  61 }
  62
  63 u_long
  64 local_to_PCI(u_long addr)
  65 {
  66
  67         return (addr & 0x7FFFFFFF) | 0x80000000;
  68 }