/*	$OpenBSD: m88100.h,v 1.11 2003/10/05 20:24:19 miod Exp $ */
/*
 * Mach Operating System
 * Copyright (c) 1993-1992 Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

#ifndef __MACHINE_M88100_H__
#define __MACHINE_M88100_H__

/*
 *	88100 RISC definitions
 */

/*
 * DMT0, DMT1, DMT2 layout
 *
 * The DMT_SKIP bit is never set by the cpu.  It is used to mark 'known'
 * transactions so that they don't get processed a second time by
 * data_access_emulation().
 */
#define DMT_SKIP	0x00010000	/* skip this dmt */
#define DMT_BO		0x00008000	/* Byte-Ordering */
#define DMT_DAS		0x00004000	/* Data Access Space */
#define DMT_DOUB1	0x00002000	/* Double Word */
#define DMT_LOCKBAR	0x00001000	/* Bud Lock */
#define DMT_DREG	0x00000F80	/* Destination Registers 5bits */
#define DMT_SIGNED	0x00000040	/* Sign-Extended Bit */
#define DMT_EN		0x0000003C	/* Byte Enable Bit */
#define DMT_WRITE	0x00000002	/* Read/Write Transaction Bit */
#define	DMT_VALID	0x00000001	/* Valid Transaction Bit */

#define	DMT_DREGSHIFT	7
#define	DMT_ENSHIFT	2

#define	DMT_DREGBITS(x)	(((x) & DMT_DREG) >> DMT_DREGSHIFT)
#define	DMT_ENBITS(x)	(((x) & DMT_EN) >> DMT_ENSHIFT)

#endif /* __MACHINE_M88100_H__ */