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m68k.h revision 1.7 
      1 /*	$NetBSD: m68k.h,v 1.7 2001/05/03 20:55:11 fredette Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1982, 1990, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  *	from: Utah $Hdr: cpu.h 1.16 91/03/25$
     41  *	from: @(#)cpu.h	8.4 (Berkeley) 1/5/94
     42  */
     43 
     44 #ifndef _M68K_M68K_H_
     45 #define	_M68K_M68K_H_
     46 
     47 /*
     48  * Declarations for things exported by sources in this directory,
     49  * or required by sources in here and not declared elsewhere.
     50  *
     51  * These declarations generally do NOT belong in <machine/cpu.h>,
     52  * because that defines the interface between the common code and
     53  * the machine-dependent code, whereas this defines the interface
     54  * between the shared m68k code and the machine-dependent code.
     55  *
     56  * The MMU stuff is exported separately so it can be used just
     57  * where it is really needed.  Same for function codes, etc.
     58  */
     59 
     60 #ifdef _KERNEL
     61 /*
     62  * All m68k ports must provide these globals.
     63  */
     64 extern	int cputype;		/* CPU on this host */
     65 extern	int ectype; 		/* external cache on this host */
     66 extern	int fputype;		/* FPU on this host */
     67 extern	int mmutype;		/* MMU on this host */
     68 #endif	/* _KERNEL */
     69 
     70 /* values for cputype */
     71 #define	CPU_68010	-1	/* 68010 */
     72 #define	CPU_68020	0	/* 68020 */
     73 #define	CPU_68030	1	/* 68030 */
     74 #define	CPU_68040	2	/* 68040 */
     75 #define	CPU_68060	3	/* 68060 */
     76 
     77 /* values for ectype */
     78 #define	EC_PHYS		-1	/* external physical address cache */
     79 #define	EC_NONE		0	/* no external cache */
     80 #define	EC_VIRT		1	/* external virtual address cache */
     81 
     82 /* values for fputype */
     83 #define	FPU_NONE	0	/* no FPU */
     84 #define	FPU_68881	1	/* 68881 FPU */
     85 #define	FPU_68882	2	/* 68882 FPU */
     86 #define	FPU_68040	3	/* 68040 on-chip FPU */
     87 #define	FPU_68060	4	/* 68060 on-chip FPU */
     88 #define	FPU_UNKNOWN	5	/* placeholder; unknown FPU */
     89 
     90 /* values for mmutype (assigned for quick testing) */
     91 #define	MMU_68060	-3	/* 68060 on-chip MMU */
     92 #define	MMU_68040	-2	/* 68040 on-chip MMU */
     93 #define	MMU_68030	-1	/* 68030 on-chip subset of 68851 */
     94 #define	MMU_HP		0	/* HP proprietary */
     95 #define	MMU_68851	1	/* Motorola 68851 */
     96 #define	MMU_SUN		2	/* Sun MMU */
     97 
     98 
     99 #ifdef _KERNEL
    100 
    101 struct trapframe;
    102 
    103 /* copypage.s */
    104 void	copypage040 __P((void *fromaddr, void *toaddr));
    105 void	copypage __P((void *fromaddr, void *toaddr));
    106 void	zeropage __P((void *addr));
    107 
    108 /* locore.s (XXX: move to support.s?) */
    109 int 	getdfc __P((void));
    110 int 	getsfc __P((void));
    111 
    112 #ifdef MAPPEDCOPY
    113 /* mappedcopy.c */
    114 int	mappedcopyin __P((void *fromp, void *top, size_t count));
    115 int	mappedcopyout __P((void *fromp, void *top, size_t count));
    116 extern	u_int mappedcopysize;
    117 #endif /* MAPPEDCOPY */
    118 
    119 /* regdump.c */
    120 void	regdump __P((struct trapframe *, int));
    121 
    122 #endif /* _KERNEL */
    123 #endif /* _M68K_M68K_H_ */
    124