cpu.h revision 1.15
1/* $NetBSD: cpu.h,v 1.15 1999/02/26 22:37:58 is 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/* 53 * Get common m68k CPU definitions. 54 */ 55#include <m68k/cpu.h> 56#define M68K_MMU_MOTOROLA 57 58/* 59 * Get interrupt glue. 60 */ 61#include <machine/intr.h> 62 63/* 64 * definitions of cpu-dependent requirements 65 * referenced in generic code 66 */ 67#define cpu_swapin(p) /* nothing */ 68#define cpu_wait(p) /* nothing */ 69#define cpu_swapout(p) /* nothing */ 70 71/* 72 * Arguments to hardclock and gatherstats encapsulate the previous 73 * machine state in an opaque clockframe. One the x68k, we use 74 * what the hardware pushes on an interrupt (frame format 0). 75 */ 76struct clockframe { 77 u_short sr; /* sr at time of interrupt */ 78 u_long pc; /* pc at time of interrupt */ 79 u_short vo; /* vector offset (4-word frame) */ 80}; 81 82#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 83#define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 84#define CLKF_PC(framep) ((framep)->pc) 85#if 0 86/* We would like to do it this way... */ 87#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 88#else 89/* but until we start using PSL_M, we have to do this instead */ 90#define CLKF_INTR(framep) (0) /* XXX */ 91#endif 92 93 94/* 95 * Preempt the current process if in interrupt from user mode, 96 * or after the current trap/syscall if in system mode. 97 */ 98extern int want_resched; /* resched() was called */ 99#define need_resched() { want_resched++; aston(); } 100 101/* 102 * Give a profiling tick to the current process when the user profiling 103 * buffer pages are invalid. On the x68k, request an ast to send us 104 * through trap, marking the proc as needing a profiling tick. 105 */ 106#define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 107 108/* 109 * Notify the current process (p) that it has a signal pending, 110 * process as soon as possible. 111 */ 112#define signotify(p) aston() 113 114extern int astpending; /* need to trap before returning to user mode */ 115#define aston() (astpending++) 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#define CTL_MACHDEP_NAMES { \ 124 { 0, 0 }, \ 125 { "console_device", CTLTYPE_STRUCT }, \ 126} 127 128/* 129 * The rest of this should probably be moved to <machine/x68kcpu.h> 130 * although some of it could probably be put into generic 68k headers. 131 */ 132 133/* values for cpuspeed (not really related to clock speed due to caches) */ 134#define MHZ_8 1 135#define MHZ_16 2 136#define MHZ_25 3 137#define MHZ_33 4 138#define MHZ_50 6 139 140#ifdef _KERNEL 141extern int machineid; 142extern char *intiolimit; 143 144/* autoconf.c functions */ 145void config_console __P((void)); 146 147/* fpu.c functions */ 148int fpu_probe __P((void)); 149 150/* machdep.c functions */ 151void dumpconf __P((void)); 152void dumpsys __P((void)); 153 154/* locore.s functions */ 155struct pcb; 156struct fpframe; 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 *)); 163void DCIS __P((void)); 164void DCIU __P((void)); 165void ICIA __P((void)); 166void ICPA __P((void)); 167void PCIA __P((void)); 168void TBIA __P((void)); 169void TBIS __P((vaddr_t)); 170void TBIAS __P((void)); 171void TBIAU __P((void)); 172#if defined(M68040) || defined(M68060) 173void DCFA __P((void)); 174void DCFP __P((vaddr_t)); 175void DCFL __P((vaddr_t)); 176void DCPL __P((vaddr_t)); 177void DCPP __P((vaddr_t)); 178void ICPL __P((vaddr_t)); 179void ICPP __P((vaddr_t)); 180#endif 181 182/* sys_machdep.c functions */ 183int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 184int dma_cachectl __P((caddr_t, int)); 185 186/* vm_machdep.c functions */ 187void physaccess __P((caddr_t, caddr_t, int, int)); 188void physunaccess __P((caddr_t, int)); 189int kvtop __P((caddr_t)); 190 191/* trap.c functions */ 192void child_return __P((void *)); 193 194#endif 195 196/* physical memory sections */ 197#define INTIOBASE (0x00C00000) 198#define INTIOTOP (0x01000000) 199 200/* 201 * Internal IO space: 202 * 203 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 204 * 205 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 206 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 207 * conversion between physical and kernel virtual addresses is easy. 208 */ 209#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 210#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 211 212#endif /* _X68K_CPU_H_ */ 213