1 /* $NetBSD: cpu.h,v 1.36 2004/09/22 11:32:03 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990 The Regents of the University of California. 5 * 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 * from: @(#)cpu.h 7.7 (Berkeley) 6/27/91 37 * cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp 38 */ 39 40 /* 41 * Copyright (c) 1994 Gordon W. Ross 42 * Copyright (c) 1993 Adam Glass 43 * Copyright (c) 1988 University of Utah. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * the Systems Programming Group of the University of Utah Computer 47 * Science Department. 48 * 49 * Redistribution and use in source and binary forms, with or without 50 * modification, are permitted provided that the following conditions 51 * are met: 52 * 1. Redistributions of source code must retain the above copyright 53 * notice, this list of conditions and the following disclaimer. 54 * 2. Redistributions in binary form must reproduce the above copyright 55 * notice, this list of conditions and the following disclaimer in the 56 * documentation and/or other materials provided with the distribution. 57 * 3. All advertising materials mentioning features or use of this software 58 * must display the following acknowledgement: 59 * This product includes software developed by the University of 60 * California, Berkeley and its contributors. 61 * 4. Neither the name of the University nor the names of its contributors 62 * may be used to endorse or promote products derived from this software 63 * without specific prior written permission. 64 * 65 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 66 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 67 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 68 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 69 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 70 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 71 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 72 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 73 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 74 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 75 * SUCH DAMAGE. 76 * 77 * from: Utah Hdr: cpu.h 1.16 91/03/25 78 * from: @(#)cpu.h 7.7 (Berkeley) 6/27/91 79 * cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp 80 */ 81 82 #ifndef _CPU_H_ 83 #define _CPU_H_ 84 85 #if defined(_KERNEL_OPT) 86 #include "opt_lockdebug.h" 87 #endif 88 89 /* 90 * Get common m68k CPU definitions. 91 */ 92 #include <m68k/cpu.h> 93 94 #ifdef _KERNEL 95 96 /* 97 * External definitions unique to sun3/68k cpu support. 98 * These are the "public" declarations - those needed in 99 * machine-independent source code. The "priviate" ones 100 * are in machdep.h (used only inside sys/arch/sun3). 101 * 102 * Note that the name of this file is NOT meant to imply 103 * that it has anything to do with mc68020 CPU stuff. 104 * The name "cpu" is historical, and used in the common 105 * code to identify machine-dependent functions, etc. 106 */ 107 108 #include <sys/cpu_data.h> 109 struct cpu_info { 110 struct cpu_data ci_data; /* MI per-cpu data */ 111 }; 112 113 extern struct cpu_info cpu_info_store; 114 115 #define curcpu() (&cpu_info_store) 116 117 /* 118 * definitions of cpu-dependent requirements 119 * referenced in generic code 120 */ 121 #define cpu_number() 0 122 #define cpu_swapin(p) /* nothing */ 123 #define cpu_swapout(p) /* nothing */ 124 125 void cpu_proc_fork(struct proc *, struct proc *); 126 127 /* 128 * Arguments to hardclock and gatherstats encapsulate the previous 129 * machine state in an opaque clockframe. One the sun3, we use 130 * what the locore.s glue puts on the stack before calling C-code. 131 */ 132 struct clockframe { 133 u_int cf_regs[4]; /* d0,d1,a0,a1 */ 134 u_short cf_sr; /* sr at time of interrupt */ 135 u_long cf_pc; /* pc at time of interrupt */ 136 u_short cf_vo; /* vector offset (4-word frame) */ 137 } __attribute__((packed)); 138 139 #define CLKF_USERMODE(framep) (((framep)->cf_sr & PSL_S) == 0) 140 #define CLKF_BASEPRI(framep) (((framep)->cf_sr & PSL_IPL) == 0) 141 #define CLKF_PC(framep) ((framep)->cf_pc) 142 #if 0 143 /* We would like to do it this way... */ 144 #define CLKF_INTR(framep) (((framep)->cf_sr & PSL_M) == 0) 145 #else 146 /* but until we start using PSL_M, we have to do this instead */ 147 #define CLKF_INTR(framep) (0) /* XXX */ 148 #endif 149 150 extern int astpending; /* need to trap before returning to user mode */ 151 #define aston() (astpending = 1) 152 153 /* 154 * Preempt the current process if in interrupt from user mode, 155 * or after the current trap/syscall if in system mode. 156 */ 157 extern int want_resched; /* resched() was called */ 158 #define need_resched(ci) { want_resched = 1; aston(); } 159 160 /* 161 * Give a profiling tick to the current process when the user profiling 162 * buffer pages are invalid. On the sun3, request an ast to send us 163 * through trap, marking the proc as needing a profiling tick. 164 */ 165 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston()) 166 167 /* 168 * Notify the current process (p) that it has a signal pending, 169 * process as soon as possible. 170 */ 171 #define signotify(p) aston() 172 173 /* 174 * Software Interrupt Register (SIR) 175 * The sun3 has a real software interrupt register set by 176 * isr_soft_request() so this scheme just multiplexes four 177 * software interrupt `sources' on the level one handler. 178 */ 179 extern void isr_soft_request __P((int level)); 180 union sun3sir { 181 int sir_any; 182 char sir_which[4]; 183 }; 184 185 extern union sun3sir sun3sir; 186 187 #define SIR_NET 0 188 #define SIR_CLOCK 1 189 #define SIR_SPARE2 2 190 #define SIR_SPARE3 3 191 192 #define setsoftint(x) isr_soft_request(x) 193 #define setsoftnet() (sun3sir.sir_which[SIR_NET] = 1, setsoftint(1)) 194 #define setsoftclock() (sun3sir.sir_which[SIR_CLOCK] = 1, setsoftint(1)) 195 196 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 197 198 /* 199 * functions here for lack of a better place. 200 */ 201 struct pcb; 202 void proc_trampoline __P((void)); 203 void savectx __P((struct pcb *)); 204 void switch_exit __P((struct lwp *)); 205 void switch_lwp_exit __P((struct lwp *)); 206 207 #ifdef _SUN3_ 208 #define M68K_VAC 209 #endif 210 211 #endif /* _KERNEL */ 212 213 #include <m68k/sysctl.h> 214 #endif /* _CPU_H_ */ 215