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/* $OpenBSD: m88100.h,v 1.1 2004/04/21 15:23:57 aoyama 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__ */
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