cpu.h revision 1.36
1/* $NetBSD: cpu.h,v 1.36 2007/02/09 21:55:13 ad 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}; 110 111extern struct cpu_info cpu_info_store; 112 113#define curcpu() (&cpu_info_store) 114 115/* 116 * definitions of cpu-dependent requirements 117 * referenced in generic code 118 */ 119#define cpu_swapin(p) /* nothing */ 120#define cpu_swapout(p) /* nothing */ 121#define cpu_number() 0 122 123void cpu_proc_fork(struct proc *, struct proc *); 124 125/* 126 * Arguments to hardclock and gatherstats encapsulate the previous 127 * machine state in an opaque clockframe. One the x68k, we use 128 * what the hardware pushes on an interrupt (frame format 0). 129 */ 130struct clockframe { 131 u_short sr; /* sr at time of interrupt */ 132 u_long pc; /* pc at time of interrupt */ 133 u_short vo; /* vector offset (4-word frame) */ 134}; 135 136#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 137#define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 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 */ 152extern int want_resched; /* resched() was called */ 153#define cpu_need_resched(ci) { want_resched++; aston(); } 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) { (l)->l_pflag |= LP_OWEUPC; aston(); } 161 162/* 163 * Notify the current process (p) that it has a signal pending, 164 * process as soon as possible. 165 */ 166#define cpu_signotify(l) aston() 167 168extern int astpending; /* need to trap before returning to user mode */ 169#define aston() (astpending++) 170 171#endif /* _KERNEL */ 172 173/* 174 * CTL_MACHDEP definitions. 175 */ 176#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 177#define CPU_MAXID 2 /* number of valid machdep ids */ 178 179#define CTL_MACHDEP_NAMES { \ 180 { 0, 0 }, \ 181 { "console_device", CTLTYPE_STRUCT }, \ 182} 183 184/* 185 * The rest of this should probably be moved to <machine/x68kcpu.h> 186 * although some of it could probably be put into generic 68k headers. 187 */ 188 189#ifdef _KERNEL 190extern int machineid; 191extern char *intiolimit; 192 193/* autoconf.c functions */ 194void config_console(void); 195 196/* fpu.c functions */ 197int fpu_probe(void); 198 199/* machdep.c functions */ 200void dumpconf(void); 201void dumpsys(void); 202 203/* locore.s functions */ 204struct pcb; 205struct fpframe; 206int suline(caddr_t, caddr_t); 207void savectx(struct pcb *); 208void switch_exit(struct lwp *); 209void switch_lwp_exit(struct lwp *); 210void proc_trampoline(void); 211void loadustp(int); 212void m68881_save(struct fpframe *); 213void m68881_restore(struct fpframe *); 214 215/* machdep.c functions */ 216int badaddr(volatile void*); 217int badbaddr(volatile void*); 218 219/* sys_machdep.c functions */ 220int cachectl1(unsigned long, vaddr_t, size_t, struct proc *); 221int dma_cachectl(caddr_t, int); 222 223/* vm_machdep.c functions */ 224void physaccess(caddr_t, caddr_t, int, int); 225void physunaccess(caddr_t, int); 226int kvtop(caddr_t); 227 228#endif 229 230/* physical memory sections */ 231#define INTIOBASE (0x00C00000) 232#define INTIOTOP (0x01000000) 233 234/* 235 * Internal IO space: 236 * 237 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 238 * 239 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 240 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 241 * conversion between physical and kernel virtual addresses is easy. 242 */ 243#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 244#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 245 246#endif /* _X68K_CPU_H_ */ 247