1/* $NetBSD: cpu.h,v 1.78 2011/02/08 20:20:08 rmind Exp $ */ 2 3/* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990 The Regents of the University of California. 6 * 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 * 38 * @(#)cpu.h 7.7 (Berkeley) 6/27/91 39 */ 40 41#ifndef _MACHINE_CPU_H_ 42#define _MACHINE_CPU_H_ 43 44#if defined(_KERNEL_OPT) 45#include "opt_lockdebug.h" 46#endif 47 48/* 49 * Get common m68k CPU definitions. 50 */ 51#include <m68k/cpu.h> 52 53#if defined(_KERNEL) 54/* 55 * Exported definitions unique to amiga/68k cpu support. 56 */ 57#define M68K_MMU_MOTOROLA 58 59extern volatile unsigned int interrupt_depth; 60/* 61 * Arguments to hardclock and gatherstats encapsulate the previous 62 * machine state in an opaque clockframe. One the hp300, we use 63 * what the hardware pushes on an interrupt (frame format 0). 64 */ 65struct clockframe { 66 u_short sr; /* sr at time of interrupt */ 67 u_long pc; /* pc at time of interrupt */ 68 u_short vo; /* vector offset (4-word frame) */ 69}; 70 71#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 72#define CLKF_PC(framep) ((framep)->pc) 73#define CLKF_INTR(framep) (interrupt_depth > 1) 74 75 76/* 77 * Preempt the current process if in interrupt from user mode, 78 * or after the current trap/syscall if in system mode. 79 */ 80#define cpu_need_resched(ci,flags) {ci->ci_want_resched = 1; setsoftast();} 81 82/* 83 * Give a profiling tick to the current process from the softclock 84 * interrupt. On hp300, request an ast to send us through trap(), 85 * marking the proc as needing a profiling tick. 86 */ 87#define profile_tick(l, framep) ((l)->l_pflag |= LP_OWEUPC, setsoftast()) 88#define cpu_need_proftick(l) ((l)->l_pflag |= LP_OWEUPC, setsoftast()) 89 90/* 91 * Notify the current process (p) that it has a signal pending, 92 * process as soon as possible. 93 */ 94#define cpu_signotify(l) setsoftast() 95 96extern int astpending; /* need trap before returning to user mode */ 97#define setsoftast() (astpending = 1) 98 99/* 100 * The rest of this should probably be moved to ../amiga/amigacpu.h, 101 * although some of it could probably be put into generic 68k headers. 102 */ 103 104/* values for machineid (happen to be AFF_* settings of AttnFlags) */ 105#define AMIGA_68020 (1L<<1) 106#define AMIGA_68030 (1L<<2) 107#define AMIGA_68040 (1L<<3) 108#define AMIGA_68881 (1L<<4) 109#define AMIGA_68882 (1L<<5) 110#define AMIGA_FPU40 (1L<<6) 111#define AMIGA_68060 (1L<<7) 112 113extern int machineid; 114 115#endif /* _KERNEL */ 116 117/* 118 * CTL_MACHDEP definitions. 119 */ 120#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 121#define CPU_MAXID 2 /* number of valid machdep ids */ 122 123#ifdef _KERNEL 124/* 125 * Prototypes from amiga_init.c 126 */ 127void *alloc_z2mem(long); 128 129/* 130 * Prototypes from autoconf.c 131 */ 132int is_a600(void); 133int is_a1200(void); 134int is_a3000(void); 135int is_a4000(void); 136#ifdef DRACO 137#define is_draco() ((machineid >> 24) == 0x7d ? (machineid >> 16) & 0xff : 0) 138#endif 139 140#ifdef DRACO 141/* 142 * Prototypes from kbd.c 143 */ 144void drkbdintr(void); 145 146/* 147 * Prototypes from drsc.c 148 */ 149void drsc_handler(void); 150#endif 151 152/* 153 * Prototypes from locore.s 154 */ 155void clearseg(vm_offset_t); 156void doboot(void) __attribute__((__noreturn__)); 157void loadustp(int); 158void physcopyseg(vm_offset_t, vm_offset_t); 159u_int probeva(u_int, u_int); 160 161/* 162 * Prototypes from machdep.c 163 */ 164int badaddr(void *); 165int badbaddr(void *); 166void bootsync(void); 167 168/* 169 * Prototypes from pmap.c: 170 */ 171void pmap_bootstrap(vm_offset_t, vm_offset_t); 172 173#endif /* _KERNEL */ 174 175/* 176 * Reorder protection when accessing device registers. 177 */ 178#define amiga_membarrier() 179 180/* 181 * Finish all bus operations and flush pipelines. 182 */ 183#define amiga_cpu_sync() __asm volatile ("nop") 184 185#endif /* !_MACHINE_CPU_H_ */ 186