cpu.h revision 1.46
1/* $NetBSD: cpu.h,v 1.46 2008/12/18 05:24:03 isaki Exp $ */ 2 3/* 4 * Copyright (c) 1982, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 36 * 37 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 38 */ 39/* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 75 * 76 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 77 */ 78 79#ifndef _X68K_CPU_H_ 80#define _X68K_CPU_H_ 81 82#if defined(_KERNEL) 83 84/* 85 * Exported definitions unique to x68k/68k cpu support. 86 */ 87 88#if defined(_KERNEL_OPT) 89#include "opt_m680x0.h" 90#include "opt_lockdebug.h" 91#endif 92 93/* 94 * Get common m68k CPU definitions. 95 */ 96#include <m68k/cpu.h> 97#define M68K_MMU_MOTOROLA 98 99/* 100 * Get interrupt glue. 101 */ 102#include <machine/intr.h> 103 104#include <sys/cpu_data.h> 105struct cpu_info { 106 struct cpu_data ci_data; /* MI per-cpu data */ 107 cpuid_t ci_cpuid; 108 int ci_mtx_count; 109 int ci_mtx_oldspl; 110 int ci_want_resched; 111}; 112 113extern struct cpu_info cpu_info_store; 114 115#define curcpu() (&cpu_info_store) 116 117/* 118 * definitions of cpu-dependent requirements 119 * referenced in generic code 120 */ 121#define cpu_swapin(p) /* nothing */ 122#define cpu_swapout(p) /* nothing */ 123#define cpu_number() 0 124 125void cpu_proc_fork(struct proc *, struct proc *); 126 127/* 128 * Arguments to hardclock and gatherstats encapsulate the previous 129 * machine state in an opaque clockframe. One the x68k, we use 130 * what the hardware pushes on an interrupt (frame format 0). 131 */ 132struct clockframe { 133 u_short sr; /* sr at time of interrupt */ 134 u_long pc; /* pc at time of interrupt */ 135 u_short vo; /* vector offset (4-word frame) */ 136}; 137 138#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 139#define CLKF_PC(framep) ((framep)->pc) 140#if 0 141/* We would like to do it this way... */ 142#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 143#else 144/* but until we start using PSL_M, we have to do this instead */ 145#define CLKF_INTR(framep) (0) /* XXX */ 146#endif 147 148 149/* 150 * Preempt the current process if in interrupt from user mode, 151 * or after the current trap/syscall if in system mode. 152 */ 153#define cpu_need_resched(ci, flags) \ 154 do { (ci)->ci_want_resched = 1; aston(); } while (/* CONSTCOND */ 0) 155 156/* 157 * Give a profiling tick to the current process when the user profiling 158 * buffer pages are invalid. On the x68k, request an ast to send us 159 * through trap, marking the proc as needing a profiling tick. 160 */ 161#define cpu_need_proftick(l) \ 162 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0) 163 164/* 165 * Notify the current process (p) that it has a signal pending, 166 * process as soon as possible. 167 */ 168#define cpu_signotify(l) aston() 169 170extern int astpending; /* need to trap before returning to user mode */ 171#define aston() (astpending++) 172 173#endif /* _KERNEL */ 174 175/* 176 * CTL_MACHDEP definitions. 177 */ 178#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 179#define CPU_MAXID 2 /* number of valid machdep ids */ 180 181/* 182 * The rest of this should probably be moved to <machine/x68kcpu.h> 183 * although some of it could probably be put into generic 68k headers. 184 */ 185 186#ifdef _KERNEL 187extern int machineid; 188extern char *intiobase; 189extern char *intiolimit; 190 191/* autoconf.c functions */ 192void config_console(void); 193 194/* fpu.c functions */ 195int fpu_probe(void); 196 197/* machdep.c functions */ 198void dumpsys(void); 199 200/* locore.s functions */ 201struct fpframe; 202int suline(void *, void *); 203void loadustp(int); 204void m68881_save(struct fpframe *); 205void m68881_restore(struct fpframe *); 206 207/* machdep.c functions */ 208int badaddr(volatile void*); 209int badbaddr(volatile void*); 210 211#endif 212 213/* physical memory sections */ 214#define INTIOBASE (0x00C00000) 215#define INTIOTOP (0x01000000) 216 217/* 218 * Internal IO space: 219 * 220 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 221 * 222 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 223 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 224 * conversion between physical and kernel virtual addresses is easy. 225 */ 226#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 227#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 228 229#endif /* _X68K_CPU_H_ */ 230