/*	$NetBSD: isareg.h,v 1.9 2005/12/11 12:22:02 christos Exp $	*/

/*-
 * 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.
 * 3. 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.
 *
 *	@(#)isa.h	5.7 (Berkeley) 5/9/91
 */

/*
 * 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 (EISA only) */
#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 */
/* 0x100 - 0x16F Open */

#define IO_WD2 0x170  /* Secondary Fixed Disk Controller */
#define IO_PMP2 0x178 /* 82347 Power Management Peripheral */

/* 0x17A - 0x1EF Open */

#define IO_WD1 0x1f0  /* Primary Fixed Disk Controller */
#define IO_GAME 0x200 /* Game Controller */

/* 0x208 - 0x237 Open */

#define IO_BMS2 0x238 /* secondary InPort Bus Mouse */
#define IO_BMS1 0x23c /* primary InPort Bus Mouse */

/* 0x240 - 0x277 Open */

#define IO_LPT2 0x278 /* Parallel Port #2 */

/* 0x280 - 0x2E7 Open */

#define IO_COM4 0x2e8 /* COM4 i/o address */

/* 0x2F0 - 0x2F7 Open */

#define IO_COM2 0x2f8 /* COM2 i/o address */

/* 0x300 - 0x32F Open */

#define IO_BT0 0x330  /* bustek 742a default addr. */
#define IO_AHA0 0x330 /* adaptec 1542 default addr. */
#define IO_UHA0 0x330 /* ultrastore 14f default addr. */
#define IO_BT1 0x334  /* bustek 742a default addr. */
#define IO_AHA1 0x334 /* adaptec 1542 default addr. */

/* 0x338 - 0x34F Open */

#define IO_WDS 0x350 /* WD7000 scsi */

/* 0x354 - 0x36F Open */

#define IO_FD2 0x370  /* secondary base i/o address */
#define IO_LPT1 0x378 /* Parallel Port #1 */

/* 0x380 - 0x3AF Open */

#define IO_MDA 0x3B0  /* Monochome Adapter */
#define IO_LPT3 0x3BC /* Monochome Adapter Printer Port */
#define IO_VGA 0x3C0  /* E/VGA Ports */
#define IO_CGA 0x3D0  /* CGA Ports */

/* 0x3E0 - 0x3E7 Open */

#define IO_COM3 0x3e8 /* COM3 i/o address */
#define IO_FD1 0x3f0  /* primary base i/o address */
#define IO_COM1 0x3f8 /* COM1 i/o address */

#define IO_ISAEND 0x3FF /* - 0x3FF End of I/O Registers */
#endif                  /* !IO_ISABEGIN */

/*
 * Input / Output Port Sizes - these are from several sources, and tend
 * to be the larger of what was found, ie COM ports can be 4, but some
 * boards do not fully decode the address, thus 8 ports are used.
 */

#ifndef IO_ISASIZES
#define IO_ISASIZES

#define IO_COMSIZE 8  /* 8250, 16X50 com controllers */
#define IO_CGASIZE 16 /* CGA controllers */
#define IO_DMASIZE 16 /* 8237 DMA controllers */
#define IO_DPGSIZE 32 /* 74LS612 DMA page reisters */
#define IO_FDCSIZE 8  /* Nec765 floppy controllers */
#define IO_WDCSIZE 8  /* WD compatible disk controller */
#define IO_GAMSIZE 16 /* AT compatible game controller */
#define IO_ICUSIZE 16 /* 8259A interrupt controllers */
#define IO_KBDSIZE 5  /* 8042 Keyboard controllers */
#define IO_LPTSIZE 8  /* LPT controllers, some use onl */
#define IO_MDASIZE 16 /* Monochrome display controller */
#define IO_RTCSIZE 16 /* CMOS real time clock, NMI con */
#define IO_TMRSIZE 16 /* 8253 programmable timers */
#define IO_NPXSIZE 16 /* 80387/80487 NPX registers */
#define IO_VGASIZE 16 /* VGA controllers */
#define IO_PMPSIZE 2  /* 82347 Power Management Peripheral */
#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)

/*
 * ISA DMA works < 16M (24 address lines).
 */
#define ISA_DMA_BOUNCE_THRESHOLD (16 * 1024 * 1024)

#endif /* !IOM_BEGIN */
