freebsd-dev/sys/i386/isa/isa.h

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 *
 *	from: @(#)isa.h	5.7 (Berkeley) 5/9/91
 * $FreeBSD$
 */

#ifdef PC98
#error isa.h is included from PC-9801 source
#endif

#ifndef _I386_ISA_ISA_H_
#define	_I386_ISA_ISA_H_

/* BEWARE:  Included in both assembler and C code */

/*
 * ISA Bus conventions
 */

/*
 * Input / Output Port Assignments
 */
#ifndef IO_ISABEGIN
#define	IO_ISABEGIN	0x000		/* 0x000 - Beginning of I/O Registers */

		/* CPU Board */
#define	IO_DMA1		0x000		/* 8237A DMA Controller #1 */
#define	IO_ICU1		0x020		/* 8259A Interrupt Controller #1 */
#define	IO_PMP1		0x026		/* 82347 Power Management Peripheral */
#define	IO_TIMER1	0x040		/* 8253 Timer #1 */
#define	IO_TIMER2	0x048		/* 8253 Timer #2 */
#define	IO_KBD		0x060		/* 8042 Keyboard */
#define	IO_PPI		0x061		/* Programmable Peripheral Interface */
#define	IO_RTC		0x070		/* RTC */
#define	IO_NMI		IO_RTC		/* NMI Control */
#define	IO_DMAPG	0x080		/* DMA Page Registers */
#define	IO_ICU2		0x0A0		/* 8259A Interrupt Controller #2 */
#define	IO_DMA2		0x0C0		/* 8237A DMA Controller #2 */
#define	IO_NPX		0x0F0		/* Numeric Coprocessor */

		/* Cards */
#define	IO_VGA		0x3C0		/* E/VGA Ports */
#define	IO_CGA		0x3D0		/* CGA Ports */
#define	IO_MDA		0x3B0		/* Monochome Adapter */

#define	IO_ISAEND	0x3FF		/* End (actually Max) of I/O Regs */
#endif /* !IO_ISABEGIN */

/*
 * Input / Output Port Sizes - these are from several sources, and tend
 * to be the larger of what was found.
 */
#ifndef	IO_ISASIZES
#define	IO_ISASIZES

#define	IO_CGASIZE	12		/* CGA controllers */
#define	IO_MDASIZE	12		/* Monochrome display controllers */
#define	IO_NPXSIZE	16		/* 80387/80487 NPX registers */
#define	IO_VGASIZE	16		/* VGA controllers */

#endif /* !IO_ISASIZES */

/*
 * Input / Output Memory Physical Addresses
 */
#ifndef	IOM_BEGIN
#define	IOM_BEGIN	0x0A0000	/* Start of I/O Memory "hole" */
#define	IOM_END		0x100000	/* End of I/O Memory "hole" */
#define	IOM_SIZE	(IOM_END - IOM_BEGIN)
#endif /* !IOM_BEGIN */

/*
 * RAM Physical Address Space (ignoring the above mentioned "hole")
 */
#ifndef	RAM_BEGIN
#define	RAM_BEGIN	0x0000000	/* Start of RAM Memory */
#define	RAM_END		0x1000000	/* End of RAM Memory */
#define	RAM_SIZE	(RAM_END - RAM_BEGIN)
#endif /* !RAM_BEGIN */

#endif /* !_I386_ISA_ISA_H_ */