cpu.h revision 1.40
1/* $NetBSD: cpu.h,v 1.40 2007/05/19 14:25:26 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 int ci_mtx_count; 108 int ci_mtx_oldspl; 109 int ci_want_resched; 110}; 111 112extern struct cpu_info cpu_info_store; 113 114#define curcpu() (&cpu_info_store) 115 116/* 117 * definitions of cpu-dependent requirements 118 * referenced in generic code 119 */ 120#define cpu_swapin(p) /* nothing */ 121#define cpu_swapout(p) /* nothing */ 122#define cpu_number() 0 123 124void cpu_proc_fork(struct proc *, struct proc *); 125 126/* 127 * Arguments to hardclock and gatherstats encapsulate the previous 128 * machine state in an opaque clockframe. One the x68k, we use 129 * what the hardware pushes on an interrupt (frame format 0). 130 */ 131struct clockframe { 132 u_short sr; /* sr at time of interrupt */ 133 u_long pc; /* pc at time of interrupt */ 134 u_short vo; /* vector offset (4-word frame) */ 135}; 136 137#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 138#define CLKF_PC(framep) ((framep)->pc) 139#if 0 140/* We would like to do it this way... */ 141#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 142#else 143/* but until we start using PSL_M, we have to do this instead */ 144#define CLKF_INTR(framep) (0) /* XXX */ 145#endif 146 147 148/* 149 * Preempt the current process if in interrupt from user mode, 150 * or after the current trap/syscall if in system mode. 151 */ 152#define cpu_need_resched(ci, flags) \ 153 do { (ci)->ci_want_resched = 1; aston(); } while (/* CONSTCOND */ 0) 154 155/* 156 * Give a profiling tick to the current process when the user profiling 157 * buffer pages are invalid. On the x68k, request an ast to send us 158 * through trap, marking the proc as needing a profiling tick. 159 */ 160#define cpu_need_proftick(l) \ 161 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0) 162 163/* 164 * Notify the current process (p) that it has a signal pending, 165 * process as soon as possible. 166 */ 167#define cpu_signotify(l) aston() 168 169extern int astpending; /* need to trap before returning to user mode */ 170#define aston() (astpending++) 171 172#endif /* _KERNEL */ 173 174/* 175 * CTL_MACHDEP definitions. 176 */ 177#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 178#define CPU_MAXID 2 /* number of valid machdep ids */ 179 180#define CTL_MACHDEP_NAMES { \ 181 { 0, 0 }, \ 182 { "console_device", CTLTYPE_STRUCT }, \ 183} 184 185/* 186 * The rest of this should probably be moved to <machine/x68kcpu.h> 187 * although some of it could probably be put into generic 68k headers. 188 */ 189 190#ifdef _KERNEL 191extern int machineid; 192extern char *intiolimit; 193 194/* autoconf.c functions */ 195void config_console(void); 196 197/* fpu.c functions */ 198int fpu_probe(void); 199 200/* machdep.c functions */ 201void dumpconf(void); 202void dumpsys(void); 203 204/* locore.s functions */ 205struct pcb; 206struct fpframe; 207int suline(void *, void *); 208void savectx(struct pcb *); 209void proc_trampoline(void); 210void loadustp(int); 211void m68881_save(struct fpframe *); 212void m68881_restore(struct fpframe *); 213 214/* machdep.c functions */ 215int badaddr(volatile void*); 216int badbaddr(volatile void*); 217 218/* sys_machdep.c functions */ 219int cachectl1(unsigned long, vaddr_t, size_t, struct proc *); 220int dma_cachectl(void *, int); 221 222/* vm_machdep.c functions */ 223void physaccess(void *, void *, int, int); 224void physunaccess(void *, int); 225int kvtop(void *); 226 227#endif 228 229/* physical memory sections */ 230#define INTIOBASE (0x00C00000) 231#define INTIOTOP (0x01000000) 232 233/* 234 * Internal IO space: 235 * 236 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 237 * 238 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 239 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 240 * conversion between physical and kernel virtual addresses is easy. 241 */ 242#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 243#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 244 245#endif /* _X68K_CPU_H_ */ 246