1 /* $NetBSD: cpu.h,v 1.11 2005/12/11 12:17:05 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 _MACHINE_CPU_H_ 80 #define _MACHINE_CPU_H_ 81 82 #if defined(_KERNEL) 83 84 #if defined(_KERNEL_OPT) 85 #include "opt_lockdebug.h" 86 #endif 87 88 /* 89 * Get common m68k CPU definitions. 90 */ 91 #include <m68k/cpu.h> 92 93 #include <sys/cpu_data.h> 94 struct cpu_info { 95 struct cpu_data ci_data; /* MI per-cpu data */ 96 }; 97 98 extern struct cpu_info cpu_info_store; 99 100 #define curcpu() (&cpu_info_store) 101 102 /* 103 * definitions of cpu-dependent requirements 104 * referenced in generic code 105 */ 106 #define cpu_swapin(p) /* nothing */ 107 #define cpu_swapout(p) /* nothing */ 108 #define cpu_number() 0 109 110 void cpu_proc_fork(struct proc *, struct proc *); 111 112 /* 113 * Arguments to hardclock and gatherstats encapsulate the previous 114 * machine state in an opaque clockframe. One the hp300, we use 115 * what the hardware pushes on an interrupt (frame format 0). 116 */ 117 struct clockframe { 118 u_short sr; /* sr at time of interrupt */ 119 u_long pc; /* pc at time of interrupt */ 120 u_short vo; /* vector offset (4-word frame) */ 121 } __attribute__((packed)); 122 123 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 124 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 125 #define CLKF_PC(framep) ((framep)->pc) 126 #if 0 127 /* We would like to do it this way... */ 128 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 129 #else 130 /* but until we start using PSL_M, we have to do this instead */ 131 #define CLKF_INTR(framep) (0) /* XXX */ 132 #endif 133 134 135 /* 136 * Preempt the current process if in interrupt from user mode, 137 * or after the current trap/syscall if in system mode. 138 */ 139 extern int want_resched; /* resched() was called */ 140 #define need_resched(ci) { want_resched++; aston(); } 141 142 /* 143 * Give a profiling tick to the current process when the user profiling 144 * buffer pages are invalid. On the hp300, request an ast to send us 145 * through trap, marking the proc as needing a profiling tick. 146 */ 147 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 148 149 /* 150 * Notify the current process (p) that it has a signal pending, 151 * process as soon as possible. 152 */ 153 #define signotify(p) aston() 154 155 extern int astpending; /* need to trap before returning to user mode */ 156 #define aston() (astpending++) 157 158 /* 159 * simulated software interrupt register 160 */ 161 extern unsigned char ssir; 162 163 #define SIR_NET 0x1 164 #define SIR_CLOCK 0x2 165 #define SIR_ZS 0x4 166 167 #define siroff(x) ssir &= ~(x) 168 #define setsoftnet() ssir |= SIR_NET 169 #define setsoftclock() ssir |= SIR_CLOCK 170 #define setsoftzs() ssir |= SIR_ZS 171 172 void softzs __P((void)); 173 174 #endif /* _KERNEL */ 175 176 /* 177 * CTL_MACHDEP definitions. 178 */ 179 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 180 #define CPU_MAXID 2 /* number of valid machdep ids */ 181 182 #define CTL_MACHDEP_NAMES { \ 183 { 0, 0 }, \ 184 { "console_device", CTLTYPE_STRUCT }, \ 185 } 186 187 #ifdef _KERNEL 188 189 #ifndef M68040 190 #define M68040 191 #endif /* ! M68040 */ 192 193 #ifndef M68K_MMU_MOTOROLA 194 #define M68K_MMU_MOTOROLA 195 #endif /* ! M68K_MMU_MOTOROLA */ 196 197 struct frame; 198 struct fpframe; 199 struct pcb; 200 201 /* locore.s functions */ 202 void m68881_save __P((struct fpframe *)); 203 void m68881_restore __P((struct fpframe *)); 204 int suline __P((caddr_t, caddr_t)); 205 void savectx __P((struct pcb *)); 206 void switch_exit __P((struct lwp *)); 207 void switch_lwp_exit __P((struct lwp *)); 208 void proc_trampoline __P((void)); 209 void loadustp __P((int)); 210 211 void doboot __P((void)) 212 __attribute__((__noreturn__)); 213 214 /* machdep.c functions */ 215 int badaddr __P((caddr_t)); 216 int badbaddr __P((caddr_t)); 217 218 /* sys_machdep.c functions */ 219 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 220 221 /* vm_machdep.c functions */ 222 void physaccess __P((caddr_t, caddr_t, int, int)); 223 void physunaccess __P((caddr_t, int)); 224 int kvtop __P((caddr_t)); 225 226 void kgdb_panic __P((void)); 227 228 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 229 #define enablertclock() 230 231 #endif /* _KERNEL */ 232 233 #endif /* _MACHINE_CPU_H_ */ 234