cpu.h revision 1.2.8.2
1 /* $NetBSD: cpu.h,v 1.2.8.2 2001/12/08 08:22:44 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 #include <m68k/m68k.h> 55 56 #ifdef _KERNEL 57 58 /* 59 * External definitions unique to sun68k cpu support. 60 * These are the "public" declarations - those needed in 61 * machine-independent source code. The "private" ones 62 * are in machdep.h (used only inside sys/arch/sun{2,3,68k}). 63 * 64 * Note that the name of this file is NOT meant to imply 65 * that it has anything to do with Motorola CPU stuff. 66 * The name "cpu" is historical, and used in the common 67 * code to identify machine-dependent functions, etc. 68 */ 69 70 #include <sys/sched.h> 71 struct cpu_info { 72 struct schedstate_percpu ci_schedstate; /* scheduler state */ 73 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 74 u_long ci_spin_locks; /* # of spin locks held */ 75 u_long ci_simple_locks; /* # of simple locks held */ 76 #endif 77 }; 78 79 extern struct cpu_info cpu_info_store; 80 81 #define curcpu() (&cpu_info_store) 82 83 /* 84 * definitions of cpu-dependent requirements 85 * referenced in generic code 86 */ 87 #define cpu_wait(p) /* nothing */ 88 #define cpu_number() 0 89 #define cpu_proc_fork(p1, p2) /* nothing */ 90 91 /* 92 * Arguments to hardclock and gatherstats encapsulate the previous 93 * machine state in an opaque clockframe. On the sun68k, we use 94 * what the locore.s glue puts on the stack before calling C-code. 95 */ 96 struct clockframe { 97 u_int cf_regs[4]; /* d0,d1,a0,a1 */ 98 u_short cf_sr; /* sr at time of interrupt */ 99 u_long cf_pc; /* pc at time of interrupt */ 100 u_short cf_vo; /* vector offset (4-word frame) */ 101 } __attribute__((packed)); 102 103 #define CLKF_USERMODE(framep) (((framep)->cf_sr & PSL_S) == 0) 104 #define CLKF_BASEPRI(framep) (((framep)->cf_sr & PSL_IPL) == 0) 105 #define CLKF_PC(framep) ((framep)->cf_pc) 106 #if 0 107 /* We would like to do it this way... */ 108 #define CLKF_INTR(framep) (((framep)->cf_sr & PSL_M) == 0) 109 #else 110 /* but until we start using PSL_M, we have to do this instead */ 111 #define CLKF_INTR(framep) (0) /* XXX */ 112 #endif 113 114 extern int astpending; /* need to trap before returning to user mode */ 115 #define aston() (astpending = 1) 116 117 /* 118 * Preempt the current process if in interrupt from user mode, 119 * or after the current trap/syscall if in system mode. 120 */ 121 extern int want_resched; /* resched() was called */ 122 #define need_resched(ci) { want_resched = 1; aston(); } 123 124 /* 125 * Give a profiling tick to the current process when the user profiling 126 * buffer pages are invalid. On the sun68k, request an ast to send us 127 * through trap, marking the proc as needing a profiling tick. 128 */ 129 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston()) 130 131 /* 132 * Notify the current process (p) that it has a signal pending, 133 * process as soon as possible. 134 */ 135 #define signotify(p) aston() 136 137 #include <machine/intr.h> 138 extern void *softnet_cookie; 139 #define setsoftnet() softintr_schedule(softnet_cookie) 140 141 /* 142 * For some reason the sparc has this prototype in its machine/cpu.h, 143 * so for now we do the same. 144 */ 145 void fb_unblank __P((void)); 146 147 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 148 149 /* 150 * This is needed by sun68k/isr.c. It's here for lack of a 151 * better place. 152 */ 153 void netintr __P((void)); 154 155 #endif /* _KERNEL */ 156 157 #include <m68k/sysctl.h> 158 #endif /* _CPU_H_ */ 159
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