1 /* $NetBSD: cpu.h,v 1.32 2003/01/18 07:03:35 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Gordon W. Ross 5 * Copyright (c) 1993 Adam Glass 6 * Copyright (c) 1988 University of Utah. 7 * Copyright (c) 1982, 1990 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * the Systems Programming Group of the University of Utah Computer 12 * Science Department. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * from: Utah Hdr: cpu.h 1.16 91/03/25 43 * from: @(#)cpu.h 7.7 (Berkeley) 6/27/91 44 * cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp 45 */ 46 47 #ifndef _CPU_H_ 48 #define _CPU_H_ 49 50 #if defined(_KERNEL_OPT) 51 #include "opt_lockdebug.h" 52 #endif 53 54 /* 55 * Get common m68k CPU definitions. 56 */ 57 #include <m68k/cpu.h> 58 59 #ifdef _KERNEL 60 61 /* 62 * External definitions unique to sun3/68k cpu support. 63 * These are the "public" declarations - those needed in 64 * machine-independent source code. The "priviate" ones 65 * are in machdep.h (used only inside sys/arch/sun3). 66 * 67 * Note that the name of this file is NOT meant to imply 68 * that it has anything to do with mc68020 CPU stuff. 69 * The name "cpu" is historical, and used in the common 70 * code to identify machine-dependent functions, etc. 71 */ 72 73 #include <sys/sched.h> 74 struct cpu_info { 75 struct schedstate_percpu ci_schedstate; /* scheduler state */ 76 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 77 u_long ci_spin_locks; /* # of spin locks held */ 78 u_long ci_simple_locks; /* # of simple locks held */ 79 #endif 80 }; 81 82 extern struct cpu_info cpu_info_store; 83 84 #define curcpu() (&cpu_info_store) 85 86 /* 87 * definitions of cpu-dependent requirements 88 * referenced in generic code 89 */ 90 #define cpu_number() 0 91 #define cpu_wait(p) /* nothing */ 92 #define cpu_swapin(p) /* nothing */ 93 #define cpu_swapout(p) /* nothing */ 94 95 void cpu_proc_fork(struct proc *, struct proc *); 96 97 /* 98 * Arguments to hardclock and gatherstats encapsulate the previous 99 * machine state in an opaque clockframe. One the sun3, we use 100 * what the locore.s glue puts on the stack before calling C-code. 101 */ 102 struct clockframe { 103 u_int cf_regs[4]; /* d0,d1,a0,a1 */ 104 u_short cf_sr; /* sr at time of interrupt */ 105 u_long cf_pc; /* pc at time of interrupt */ 106 u_short cf_vo; /* vector offset (4-word frame) */ 107 } __attribute__((packed)); 108 109 #define CLKF_USERMODE(framep) (((framep)->cf_sr & PSL_S) == 0) 110 #define CLKF_BASEPRI(framep) (((framep)->cf_sr & PSL_IPL) == 0) 111 #define CLKF_PC(framep) ((framep)->cf_pc) 112 #if 0 113 /* We would like to do it this way... */ 114 #define CLKF_INTR(framep) (((framep)->cf_sr & PSL_M) == 0) 115 #else 116 /* but until we start using PSL_M, we have to do this instead */ 117 #define CLKF_INTR(framep) (0) /* XXX */ 118 #endif 119 120 extern int astpending; /* need to trap before returning to user mode */ 121 #define aston() (astpending = 1) 122 123 /* 124 * Preempt the current process if in interrupt from user mode, 125 * or after the current trap/syscall if in system mode. 126 */ 127 extern int want_resched; /* resched() was called */ 128 #define need_resched(ci) { want_resched = 1; aston(); } 129 130 /* 131 * Give a profiling tick to the current process when the user profiling 132 * buffer pages are invalid. On the sun3, request an ast to send us 133 * through trap, marking the proc as needing a profiling tick. 134 */ 135 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston()) 136 137 /* 138 * Notify the current process (p) that it has a signal pending, 139 * process as soon as possible. 140 */ 141 #define signotify(p) aston() 142 143 /* 144 * Software Interrupt Register (SIR) 145 * The sun3 has a real software interrupt register set by 146 * isr_soft_request() so this scheme just multiplexes four 147 * software interrupt `sources' on the level one handler. 148 */ 149 extern void isr_soft_request __P((int level)); 150 union sun3sir { 151 int sir_any; 152 char sir_which[4]; 153 }; 154 155 #ifdef _KERNEL 156 extern union sun3sir sun3sir; 157 #endif 158 159 #define SIR_NET 0 160 #define SIR_CLOCK 1 161 #define SIR_SPARE2 2 162 #define SIR_SPARE3 3 163 164 #define setsoftint(x) isr_soft_request(x) 165 #define setsoftnet() (sun3sir.sir_which[SIR_NET] = 1, setsoftint(1)) 166 #define setsoftclock() (sun3sir.sir_which[SIR_CLOCK] = 1, setsoftint(1)) 167 168 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 169 170 /* 171 * functions here for lack of a better place. 172 */ 173 struct pcb; 174 void proc_trampoline __P((void)); 175 void savectx __P((struct pcb *)); 176 void switch_exit __P((struct lwp *)); 177 void switch_lwp_exit __P((struct lwp *)); 178 179 #ifdef _SUN3_ 180 #define M68K_VAC 181 #endif 182 183 #endif /* _KERNEL */ 184 185 #include <m68k/sysctl.h> 186 #endif /* _CPU_H_ */ 187