1 /* $NetBSD: cpu.h,v 1.35 2004/01/04 11:33:31 jdolecek 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/sched.h> 109 struct cpu_info { 110 struct schedstate_percpu ci_schedstate; /* scheduler state */ 111 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 112 u_long ci_spin_locks; /* # of spin locks held */ 113 u_long ci_simple_locks; /* # of simple locks held */ 114 #endif 115 }; 116 117 extern struct cpu_info cpu_info_store; 118 119 #define curcpu() (&cpu_info_store) 120 121 /* 122 * definitions of cpu-dependent requirements 123 * referenced in generic code 124 */ 125 #define cpu_number() 0 126 #define cpu_swapin(p) /* nothing */ 127 #define cpu_swapout(p) /* nothing */ 128 129 void cpu_proc_fork(struct proc *, struct proc *); 130 131 /* 132 * Arguments to hardclock and gatherstats encapsulate the previous 133 * machine state in an opaque clockframe. One the sun3, we use 134 * what the locore.s glue puts on the stack before calling C-code. 135 */ 136 struct clockframe { 137 u_int cf_regs[4]; /* d0,d1,a0,a1 */ 138 u_short cf_sr; /* sr at time of interrupt */ 139 u_long cf_pc; /* pc at time of interrupt */ 140 u_short cf_vo; /* vector offset (4-word frame) */ 141 } __attribute__((packed)); 142 143 #define CLKF_USERMODE(framep) (((framep)->cf_sr & PSL_S) == 0) 144 #define CLKF_BASEPRI(framep) (((framep)->cf_sr & PSL_IPL) == 0) 145 #define CLKF_PC(framep) ((framep)->cf_pc) 146 #if 0 147 /* We would like to do it this way... */ 148 #define CLKF_INTR(framep) (((framep)->cf_sr & PSL_M) == 0) 149 #else 150 /* but until we start using PSL_M, we have to do this instead */ 151 #define CLKF_INTR(framep) (0) /* XXX */ 152 #endif 153 154 extern int astpending; /* need to trap before returning to user mode */ 155 #define aston() (astpending = 1) 156 157 /* 158 * Preempt the current process if in interrupt from user mode, 159 * or after the current trap/syscall if in system mode. 160 */ 161 extern int want_resched; /* resched() was called */ 162 #define need_resched(ci) { want_resched = 1; aston(); } 163 164 /* 165 * Give a profiling tick to the current process when the user profiling 166 * buffer pages are invalid. On the sun3, request an ast to send us 167 * through trap, marking the proc as needing a profiling tick. 168 */ 169 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston()) 170 171 /* 172 * Notify the current process (p) that it has a signal pending, 173 * process as soon as possible. 174 */ 175 #define signotify(p) aston() 176 177 /* 178 * Software Interrupt Register (SIR) 179 * The sun3 has a real software interrupt register set by 180 * isr_soft_request() so this scheme just multiplexes four 181 * software interrupt `sources' on the level one handler. 182 */ 183 extern void isr_soft_request __P((int level)); 184 union sun3sir { 185 int sir_any; 186 char sir_which[4]; 187 }; 188 189 extern union sun3sir sun3sir; 190 191 #define SIR_NET 0 192 #define SIR_CLOCK 1 193 #define SIR_SPARE2 2 194 #define SIR_SPARE3 3 195 196 #define setsoftint(x) isr_soft_request(x) 197 #define setsoftnet() (sun3sir.sir_which[SIR_NET] = 1, setsoftint(1)) 198 #define setsoftclock() (sun3sir.sir_which[SIR_CLOCK] = 1, setsoftint(1)) 199 200 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 201 202 /* 203 * functions here for lack of a better place. 204 */ 205 struct pcb; 206 void proc_trampoline __P((void)); 207 void savectx __P((struct pcb *)); 208 void switch_exit __P((struct lwp *)); 209 void switch_lwp_exit __P((struct lwp *)); 210 211 #ifdef _SUN3_ 212 #define M68K_VAC 213 #endif 214 215 #endif /* _KERNEL */ 216 217 #include <m68k/sysctl.h> 218 #endif /* _CPU_H_ */ 219