cpu.h revision 1.14
1 /* $NetBSD: cpu.h,v 1.14 2007/05/18 10:18:26 tsutsui 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 #include <m68k/cpu.h> 90 91 #ifdef _KERNEL 92 93 /* 94 * External definitions unique to sun68k cpu support. 95 * These are the "public" declarations - those needed in 96 * machine-independent source code. The "private" ones 97 * are in machdep.h (used only inside sys/arch/sun{2,3,68k}). 98 * 99 * Note that the name of this file is NOT meant to imply 100 * that it has anything to do with Motorola CPU stuff. 101 * The name "cpu" is historical, and used in the common 102 * code to identify machine-dependent functions, etc. 103 */ 104 105 #include <sys/cpu_data.h> 106 struct cpu_info { 107 struct cpu_data ci_data; /* MI per-cpu data */ 108 int ci_mtx_count; 109 int ci_mtx_oldspl; 110 int ci_want_resched; 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. On the sun68k, 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_PC(framep) ((framep)->cf_pc) 141 #if 0 142 /* We would like to do it this way... */ 143 #define CLKF_INTR(framep) (((framep)->cf_sr & PSL_M) == 0) 144 #else 145 /* but until we start using PSL_M, we have to do this instead */ 146 #define CLKF_INTR(framep) (0) /* XXX */ 147 #endif 148 149 extern int astpending; /* need to trap before returning to user mode */ 150 #define aston() (astpending = 1) 151 152 /* 153 * Preempt the current process if in interrupt from user mode, 154 * or after the current trap/syscall if in system mode. 155 */ 156 #define cpu_need_resched(ci, flags) \ 157 do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0) 158 159 /* 160 * Give a profiling tick to the current process when the user profiling 161 * buffer pages are invalid. On the sun68k, request an ast to send us 162 * through trap, marking the proc as needing a profiling tick. 163 */ 164 #define cpu_need_proftick(l) ((l)->l_pflag |= LP_OWEUPC, aston()) 165 166 /* 167 * Notify the current process (p) that it has a signal pending, 168 * process as soon as possible. 169 */ 170 #define cpu_signotify(l) aston() 171 172 /* 173 * For some reason the sparc has this prototype in its machine/cpu.h, 174 * so for now we do the same. 175 */ 176 void fb_unblank(void); 177 178 int cachectl1(unsigned long, vaddr_t, size_t, struct proc *); 179 180 /* 181 * This is needed by sun68k/isr.c. It's here for lack of a 182 * better place. 183 */ 184 void netintr(void); 185 186 /* 187 * more stuff here for lack of a better place. 188 */ 189 struct pcb; 190 void proc_trampoline(void); 191 void savectx(struct pcb *); 192 193 #ifndef _SUN3X_ 194 #define M68K_VAC 195 #endif 196 197 #endif /* _KERNEL */ 198 199 #include <m68k/sysctl.h> 200 #endif /* _CPU_H_ */ 201
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