55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
/* $Id: io.c,v 1.1 1998/01/16 04:17:50 sakamoto Exp $ */
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/*-
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* Copyright (C) 1995-1997 Gary Thomas (gdt@linuxppc.org)
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* All rights reserved.
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*
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* PCI/ISA I/O support
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*
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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 Gary Thomas.
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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 without specific prior written permission.
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*
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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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volatile unsigned char *ISA_io = (unsigned char *)0x80000000;
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volatile unsigned char *ISA_mem = (unsigned char *)0xC0000000;
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void
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outb(int port, char val)
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{
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ISA_io[port] = val;
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}
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unsigned char
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inb(int port)
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{
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return (ISA_io[port]);
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}
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unsigned long
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local_to_PCI(unsigned long addr)
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{
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return ((addr & 0x7FFFFFFF) | 0x80000000);
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}
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