cpu.h revision 1.31
1/* $NetBSD: cpu.h,v 1.31 2004/09/22 11:32:03 yamt 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/* 83 * Exported definitions unique to x68k/68k cpu support. 84 */ 85 86#if defined(_KERNEL_OPT) 87#include "opt_m680x0.h" 88#include "opt_lockdebug.h" 89#endif 90 91/* 92 * Get common m68k CPU definitions. 93 */ 94#include <m68k/cpu.h> 95#define M68K_MMU_MOTOROLA 96 97/* 98 * Get interrupt glue. 99 */ 100#include <machine/intr.h> 101 102#include <sys/cpu_data.h> 103struct cpu_info { 104 struct cpu_data ci_data; /* MI per-cpu data */ 105}; 106 107#ifdef _KERNEL 108extern struct cpu_info cpu_info_store; 109 110#define curcpu() (&cpu_info_store) 111 112/* 113 * definitions of cpu-dependent requirements 114 * referenced in generic code 115 */ 116#define cpu_swapin(p) /* nothing */ 117#define cpu_swapout(p) /* nothing */ 118#define cpu_number() 0 119 120void cpu_proc_fork(struct proc *, struct proc *); 121 122/* 123 * Arguments to hardclock and gatherstats encapsulate the previous 124 * machine state in an opaque clockframe. One the x68k, we use 125 * what the hardware pushes on an interrupt (frame format 0). 126 */ 127struct clockframe { 128 u_short sr; /* sr at time of interrupt */ 129 u_long pc; /* pc at time of interrupt */ 130 u_short vo; /* vector offset (4-word frame) */ 131}; 132 133#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 134#define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 135#define CLKF_PC(framep) ((framep)->pc) 136#if 0 137/* We would like to do it this way... */ 138#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 139#else 140/* but until we start using PSL_M, we have to do this instead */ 141#define CLKF_INTR(framep) (0) /* XXX */ 142#endif 143 144 145/* 146 * Preempt the current process if in interrupt from user mode, 147 * or after the current trap/syscall if in system mode. 148 */ 149extern int want_resched; /* resched() was called */ 150#define need_resched(ci) { want_resched++; aston(); } 151 152/* 153 * Give a profiling tick to the current process when the user profiling 154 * buffer pages are invalid. On the x68k, request an ast to send us 155 * through trap, marking the proc as needing a profiling tick. 156 */ 157#define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 158 159/* 160 * Notify the current process (p) that it has a signal pending, 161 * process as soon as possible. 162 */ 163#define signotify(p) aston() 164 165extern int astpending; /* need to trap before returning to user mode */ 166#define aston() (astpending++) 167 168#endif /* _KERNEL */ 169 170/* 171 * CTL_MACHDEP definitions. 172 */ 173#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 174#define CPU_MAXID 2 /* number of valid machdep ids */ 175 176#define CTL_MACHDEP_NAMES { \ 177 { 0, 0 }, \ 178 { "console_device", CTLTYPE_STRUCT }, \ 179} 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 *intiolimit; 189 190/* autoconf.c functions */ 191void config_console __P((void)); 192 193/* fpu.c functions */ 194int fpu_probe __P((void)); 195 196/* machdep.c functions */ 197void dumpconf __P((void)); 198void dumpsys __P((void)); 199 200/* locore.s functions */ 201struct pcb; 202struct fpframe; 203int suline __P((caddr_t, caddr_t)); 204void savectx __P((struct pcb *)); 205void switch_exit __P((struct lwp *)); 206void switch_lwp_exit __P((struct lwp *)); 207void proc_trampoline __P((void)); 208void loadustp __P((int)); 209void m68881_save __P((struct fpframe *)); 210void m68881_restore __P((struct fpframe *)); 211 212/* machdep.c functions */ 213int badaddr __P((caddr_t)); 214int badbaddr __P((caddr_t)); 215 216/* sys_machdep.c functions */ 217int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 218int dma_cachectl __P((caddr_t, int)); 219 220/* vm_machdep.c functions */ 221void physaccess __P((caddr_t, caddr_t, int, int)); 222void physunaccess __P((caddr_t, int)); 223int kvtop __P((caddr_t)); 224 225#endif 226 227/* physical memory sections */ 228#define INTIOBASE (0x00C00000) 229#define INTIOTOP (0x01000000) 230 231/* 232 * Internal IO space: 233 * 234 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 235 * 236 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 237 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 238 * conversion between physical and kernel virtual addresses is easy. 239 */ 240#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 241#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 242 243#endif /* _X68K_CPU_H_ */ 244