cpu.h revision 1.35
1/* $NetBSD: cpu.h,v 1.35 2005/12/11 12:19:44 christos 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}; 108 109extern struct cpu_info cpu_info_store; 110 111#define curcpu() (&cpu_info_store) 112 113/* 114 * definitions of cpu-dependent requirements 115 * referenced in generic code 116 */ 117#define cpu_swapin(p) /* nothing */ 118#define cpu_swapout(p) /* nothing */ 119#define cpu_number() 0 120 121void cpu_proc_fork(struct proc *, struct proc *); 122 123/* 124 * Arguments to hardclock and gatherstats encapsulate the previous 125 * machine state in an opaque clockframe. One the x68k, we use 126 * what the hardware pushes on an interrupt (frame format 0). 127 */ 128struct clockframe { 129 u_short sr; /* sr at time of interrupt */ 130 u_long pc; /* pc at time of interrupt */ 131 u_short vo; /* vector offset (4-word frame) */ 132}; 133 134#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 135#define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 136#define CLKF_PC(framep) ((framep)->pc) 137#if 0 138/* We would like to do it this way... */ 139#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 140#else 141/* but until we start using PSL_M, we have to do this instead */ 142#define CLKF_INTR(framep) (0) /* XXX */ 143#endif 144 145 146/* 147 * Preempt the current process if in interrupt from user mode, 148 * or after the current trap/syscall if in system mode. 149 */ 150extern int want_resched; /* resched() was called */ 151#define need_resched(ci) { want_resched++; aston(); } 152 153/* 154 * Give a profiling tick to the current process when the user profiling 155 * buffer pages are invalid. On the x68k, request an ast to send us 156 * through trap, marking the proc as needing a profiling tick. 157 */ 158#define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 159 160/* 161 * Notify the current process (p) that it has a signal pending, 162 * process as soon as possible. 163 */ 164#define signotify(p) aston() 165 166extern int astpending; /* need to trap before returning to user mode */ 167#define aston() (astpending++) 168 169#endif /* _KERNEL */ 170 171/* 172 * CTL_MACHDEP definitions. 173 */ 174#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 175#define CPU_MAXID 2 /* number of valid machdep ids */ 176 177#define CTL_MACHDEP_NAMES { \ 178 { 0, 0 }, \ 179 { "console_device", CTLTYPE_STRUCT }, \ 180} 181 182/* 183 * The rest of this should probably be moved to <machine/x68kcpu.h> 184 * although some of it could probably be put into generic 68k headers. 185 */ 186 187#ifdef _KERNEL 188extern int machineid; 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 dumpconf(void); 199void dumpsys(void); 200 201/* locore.s functions */ 202struct pcb; 203struct fpframe; 204int suline(caddr_t, caddr_t); 205void savectx(struct pcb *); 206void switch_exit(struct lwp *); 207void switch_lwp_exit(struct lwp *); 208void proc_trampoline(void); 209void loadustp(int); 210void m68881_save(struct fpframe *); 211void m68881_restore(struct fpframe *); 212 213/* machdep.c functions */ 214int badaddr(volatile void*); 215int badbaddr(volatile void*); 216 217/* sys_machdep.c functions */ 218int cachectl1(unsigned long, vaddr_t, size_t, struct proc *); 219int dma_cachectl(caddr_t, int); 220 221/* vm_machdep.c functions */ 222void physaccess(caddr_t, caddr_t, int, int); 223void physunaccess(caddr_t, int); 224int kvtop(caddr_t); 225 226#endif 227 228/* physical memory sections */ 229#define INTIOBASE (0x00C00000) 230#define INTIOTOP (0x01000000) 231 232/* 233 * Internal IO space: 234 * 235 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 236 * 237 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 238 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 239 * conversion between physical and kernel virtual addresses is easy. 240 */ 241#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 242#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 243 244#endif /* _X68K_CPU_H_ */ 245