1 /* $NetBSD: m68k.h,v 1.27 2024/01/13 00:44:42 thorpej 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. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 37 * from: @(#)cpu.h 8.4 (Berkeley) 1/5/94 38 */ 39 40 #ifndef _M68K_M68K_H_ 41 #define _M68K_M68K_H_ 42 43 /* 44 * Declarations for things exported by sources in this directory, 45 * or required by sources in here and not declared elsewhere. 46 * 47 * These declarations generally do NOT belong in <machine/cpu.h>, 48 * because that defines the interface between the common code and 49 * the machine-dependent code, whereas this defines the interface 50 * between the shared m68k code and the machine-dependent code. 51 * 52 * The MMU stuff is exported separately so it can be used just 53 * where it is really needed. Same for function codes, etc. 54 */ 55 56 #ifdef _KERNEL 57 /* 58 * All m68k ports must provide these globals. 59 */ 60 extern int cputype; /* CPU on this host */ 61 extern int ectype; /* external cache on this host */ 62 extern int fputype; /* FPU on this host */ 63 extern int mmutype; /* MMU on this host */ 64 #endif /* _KERNEL */ 65 66 /* values for cputype */ 67 #define CPU_68010 -1 /* 68010 */ 68 #define CPU_68020 0 /* 68020 */ 69 #define CPU_68030 1 /* 68030 */ 70 #define CPU_68040 2 /* 68040 */ 71 #define CPU_68060 3 /* 68060 */ 72 73 /* values for ectype */ 74 #define EC_PHYS -1 /* external physical address cache */ 75 #define EC_NONE 0 /* no external cache */ 76 #define EC_VIRT 1 /* external virtual address cache */ 77 78 /* values for fputype */ 79 #define FPU_NONE 0 /* no FPU */ 80 #define FPU_68881 1 /* 68881 FPU */ 81 #define FPU_68882 2 /* 68882 FPU */ 82 #define FPU_68040 3 /* 68040 on-chip FPU */ 83 #define FPU_68060 4 /* 68060 on-chip FPU */ 84 #define FPU_UNKNOWN 5 /* placeholder; unknown FPU */ 85 86 /* values for mmutype (assigned for quick testing) */ 87 #define MMU_68060 -3 /* 68060 on-chip MMU */ 88 #define MMU_68040 -2 /* 68040 on-chip MMU */ 89 #define MMU_68030 -1 /* 68030 on-chip subset of 68851 */ 90 #define MMU_HP 0 /* HP proprietary */ 91 #define MMU_68851 1 /* Motorola 68851 */ 92 #define MMU_SUN 2 /* Sun MMU */ 93 94 95 #ifdef _KERNEL 96 97 struct pcb; 98 struct trapframe; 99 struct fpframe; 100 101 /* copypage.s */ 102 void copypage040(void *fromaddr, void *toaddr); 103 void copypage(void *fromaddr, void *toaddr); 104 void zeropage(void *addr); 105 106 /* switch_subr.s */ 107 void lwp_trampoline(void); 108 void m68881_save(struct fpframe *); 109 void m68881_restore(struct fpframe *); 110 void savectx(struct pcb *); 111 112 /* w16copy.s */ 113 void w16zero(void *, u_int); 114 void w16copy(const void *, void *, u_int); 115 116 /* fpu.c */ 117 int fpu_probe(void); 118 119 /* regdump.c */ 120 void regdump(struct trapframe *, int); 121 122 /* sys_machdep.c */ 123 int cachectl1(u_long, vaddr_t, size_t, struct proc *); 124 int dma_cachectl(void *, int); 125 126 /* vm_machdep.c */ 127 int kvtop(void *); 128 void physaccess(void *, void *, int, int); 129 void physunaccess(void *, int); 130 131 #endif /* _KERNEL */ 132 #endif /* _M68K_M68K_H_ */ 133