cpu.h revision 1.51
1 /* $NetBSD: cpu.h,v 1.51 2019/11/23 19:40:35 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 37 * 38 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 39 */ 40 41 #ifndef _MACHINE_CPU_H_ 42 #define _MACHINE_CPU_H_ 43 44 #if defined(_KERNEL_OPT) 45 #include "opt_lockdebug.h" 46 #include "opt_m68k_arch.h" 47 #endif 48 49 /* 50 * Get common m68k CPU definitions. 51 */ 52 #include <m68k/cpu.h> 53 54 #if defined(_KERNEL) 55 /* 56 * Exported definitions unique to mvme68k/68k cpu support. 57 */ 58 #define M68K_MMU_MOTOROLA 59 60 /* 61 * Arguments to hardclock and gatherstats encapsulate the previous 62 * machine state in an opaque clockframe. On the mvme68k, we use 63 * what the hardware pushes on an interrupt (frame format 0). 64 */ 65 struct clockframe { 66 u_short sr; /* sr at time of interrupt */ 67 u_long pc; /* pc at time of interrupt */ 68 u_short fmt:4, 69 vec:12; /* vector offset (4-word frame) */ 70 } __attribute__((packed)); 71 72 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 73 #define CLKF_PC(framep) ((framep)->pc) 74 75 /* 76 * The clock interrupt handler can determine if it's a nested 77 * interrupt by checking for interrupt_depth > 1. 78 * (Remember, the clock interrupt handler itself will cause the 79 * depth counter to be incremented). 80 */ 81 extern volatile unsigned int interrupt_depth; 82 #define CLKF_INTR(framep) (interrupt_depth > 1) 83 84 85 /* 86 * Preempt the current process if in interrupt from user mode, 87 * or after the current trap/syscall if in system mode. 88 */ 89 #define cpu_need_resched(ci,l,flags) do { \ 90 __USE(flags); \ 91 aston(); \ 92 } while (/*CONSTCOND*/0) 93 94 /* 95 * Give a profiling tick to the current process when the user profiling 96 * buffer pages are invalid. On the mvme68k, request an ast to send us 97 * through trap, marking the proc as needing a profiling tick. 98 */ 99 #define cpu_need_proftick(l) \ 100 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0) 101 102 /* 103 * Notify the current process (p) that it has a signal pending, 104 * process as soon as possible. 105 */ 106 #define cpu_signotify(l) aston() 107 108 extern int astpending; /* need to trap before returning to user mode */ 109 #define aston() (astpending++) 110 111 /* 112 * Associate MVME models with CPU types. 113 */ 114 #define MVME68K 1 115 116 /* 117 * MVME-147; 68030 CPU 118 */ 119 #if defined(MVME147) && !defined(M68030) 120 #define M68030 121 #endif 122 123 /* 124 * MVME-162/166/167; 68040 CPU 125 */ 126 #if (defined(MVME162) || defined(MVME167)) && !defined(M68040) 127 #define M68040 128 #endif 129 130 /* 131 * MVME-172/177; 68060 CPU 132 */ 133 #if (defined(MVME172) || defined(MVME177)) && !defined(M68060) 134 #define M68060 135 #endif 136 #endif /* _KERNEL */ 137 138 /* 139 * Values for machineid; these match the Bug's values. 140 */ 141 #define MVME_147 0x147 142 #define MVME_162 0x162 143 #define MVME_166 0x166 144 #define MVME_167 0x167 145 #define MVME_172 0x172 146 #define MVME_177 0x177 147 148 #ifdef _KERNEL 149 extern int machineid; 150 extern int cpuspeed; 151 extern char *intiobase, *intiolimit; 152 extern u_int intiobase_phys, intiotop_phys; 153 extern u_long ether_data_buff_size; 154 extern u_char mvme_ea[6]; 155 156 void doboot(int) 157 __attribute__((__noreturn__)); 158 int nmihand(void *); 159 void mvme68k_abort(const char *); 160 void *iomap(u_long, size_t); 161 void iounmap(void *, size_t); 162 void loadustp(paddr_t); 163 164 /* physical memory addresses where mvme147's onboard devices live */ 165 #define INTIOBASE147 (0xfffe0000u) 166 #define INTIOTOP147 (0xfffe5000u) 167 168 /* ditto for mvme1[67][27] */ 169 #define INTIOBASE1xx (0xfff40000u) 170 #define INTIOTOP1xx (0xfffd0000u) 171 172 #endif /* _KERNEL */ 173 174 #endif /* _MACHINE_CPU_H_ */ 175
Indexes created Sat Sep 27 22:09:54 GMT 2025