cpu.h revision 1.22
1/* $NetBSD: cpu.h,v 1.22 2000/04/23 05:38:31 minoura 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. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 41 * 42 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 43 */ 44 45#ifndef _X68K_CPU_H_ 46#define _X68K_CPU_H_ 47 48/* 49 * Exported definitions unique to x68k/68k cpu support. 50 */ 51 52#if defined(_KERNEL) && !defined(_LKM) 53#include "opt_m680x0.h" 54#endif 55 56/* 57 * Get common m68k CPU definitions. 58 */ 59#include <m68k/cpu.h> 60#include <m68k/cacheops.h> 61#define M68K_MMU_MOTOROLA 62 63/* 64 * Get interrupt glue. 65 */ 66#include <machine/intr.h> 67 68/* 69 * definitions of cpu-dependent requirements 70 * referenced in generic code 71 */ 72#define cpu_swapin(p) /* nothing */ 73#define cpu_wait(p) /* nothing */ 74#define cpu_swapout(p) /* nothing */ 75#define cpu_number() 0 76 77/* 78 * Arguments to hardclock and gatherstats encapsulate the previous 79 * machine state in an opaque clockframe. One the x68k, we use 80 * what the hardware pushes on an interrupt (frame format 0). 81 */ 82struct clockframe { 83 u_short sr; /* sr at time of interrupt */ 84 u_long pc; /* pc at time of interrupt */ 85 u_short vo; /* vector offset (4-word frame) */ 86}; 87 88#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 89#define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 90#define CLKF_PC(framep) ((framep)->pc) 91#if 0 92/* We would like to do it this way... */ 93#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 94#else 95/* but until we start using PSL_M, we have to do this instead */ 96#define CLKF_INTR(framep) (0) /* XXX */ 97#endif 98 99 100/* 101 * Preempt the current process if in interrupt from user mode, 102 * or after the current trap/syscall if in system mode. 103 */ 104extern int want_resched; /* resched() was called */ 105#define need_resched() { want_resched++; aston(); } 106 107/* 108 * Give a profiling tick to the current process when the user profiling 109 * buffer pages are invalid. On the x68k, request an ast to send us 110 * through trap, marking the proc as needing a profiling tick. 111 */ 112#define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 113 114/* 115 * Notify the current process (p) that it has a signal pending, 116 * process as soon as possible. 117 */ 118#define signotify(p) aston() 119 120extern int astpending; /* need to trap before returning to user mode */ 121#define aston() (astpending++) 122 123/* 124 * CTL_MACHDEP definitions. 125 */ 126#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 127#define CPU_MAXID 2 /* number of valid machdep ids */ 128 129#define CTL_MACHDEP_NAMES { \ 130 { 0, 0 }, \ 131 { "console_device", CTLTYPE_STRUCT }, \ 132} 133 134/* 135 * The rest of this should probably be moved to <machine/x68kcpu.h> 136 * although some of it could probably be put into generic 68k headers. 137 */ 138 139#ifdef _KERNEL 140extern int machineid; 141extern char *intiolimit; 142 143/* autoconf.c functions */ 144void config_console __P((void)); 145 146/* fpu.c functions */ 147int fpu_probe __P((void)); 148 149/* machdep.c functions */ 150void dumpconf __P((void)); 151void dumpsys __P((void)); 152 153/* locore.s functions */ 154struct pcb; 155struct fpframe; 156int suline __P((caddr_t, caddr_t)); 157void savectx __P((struct pcb *)); 158void switch_exit __P((struct proc *)); 159void proc_trampoline __P((void)); 160void loadustp __P((int)); 161void m68881_save __P((struct fpframe *)); 162void m68881_restore __P((struct fpframe *)); 163 164/* machdep.c functions */ 165int badaddr __P((caddr_t)); 166int badbaddr __P((caddr_t)); 167 168/* sys_machdep.c functions */ 169int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 170int dma_cachectl __P((caddr_t, int)); 171 172/* vm_machdep.c functions */ 173void physaccess __P((caddr_t, caddr_t, int, int)); 174void physunaccess __P((caddr_t, int)); 175int kvtop __P((caddr_t)); 176 177/* trap.c functions */ 178void child_return __P((void *)); 179 180#endif 181 182/* physical memory sections */ 183#define INTIOBASE (0x00C00000) 184#define INTIOTOP (0x01000000) 185 186/* 187 * Internal IO space: 188 * 189 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 190 * 191 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 192 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 193 * conversion between physical and kernel virtual addresses is easy. 194 */ 195#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 196#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 197 198#endif /* _X68K_CPU_H_ */ 199