1 /* $NetBSD: cpu.h,v 1.83 2019/11/23 19:40:34 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990 The Regents of the University of California. 6 * 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 7.7 (Berkeley) 6/27/91 39 */ 40 41 #ifndef _MACHINE_CPU_H_ 42 #define _MACHINE_CPU_H_ 43 44 #if defined(_KERNEL_OPT) 45 #include "opt_lockdebug.h" 46 #endif 47 48 /* 49 * Get common m68k CPU definitions. 50 */ 51 #include <m68k/cpu.h> 52 53 #if defined(_KERNEL) 54 /* 55 * Exported definitions unique to amiga/68k cpu support. 56 */ 57 #define M68K_MMU_MOTOROLA 58 59 extern volatile unsigned int interrupt_depth; 60 /* 61 * Arguments to hardclock and gatherstats encapsulate the previous 62 * machine state in an opaque clockframe. On the amiga, 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 vo; /* vector offset (4-word frame) */ 69 }; 70 71 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 72 #define CLKF_PC(framep) ((framep)->pc) 73 #define CLKF_INTR(framep) (interrupt_depth > 1) 74 75 76 /* 77 * Preempt the current process if in interrupt from user mode, 78 * or after the current trap/syscall if in system mode. 79 */ 80 #define cpu_need_resched(ci,l,flags) do { \ 81 __USE(flags); \ 82 setsoftast(); \ 83 } while (/*CONSTCOND*/0) 84 85 /* 86 * Give a profiling tick to the current process from the softclock 87 * interrupt. On the amiga, request an ast to send us through trap(), 88 * marking the proc as needing a profiling tick. 89 */ 90 #define profile_tick(l, framep) ((l)->l_pflag |= LP_OWEUPC, setsoftast()) 91 #define cpu_need_proftick(l) ((l)->l_pflag |= LP_OWEUPC, setsoftast()) 92 93 /* 94 * Notify the current process (p) that it has a signal pending, 95 * process as soon as possible. 96 */ 97 #define cpu_signotify(l) setsoftast() 98 99 extern int astpending; /* need trap before returning to user mode */ 100 #define setsoftast() (astpending = 1) 101 102 /* 103 * The rest of this should probably be moved to ../amiga/amigacpu.h, 104 * although some of it could probably be put into generic 68k headers. 105 */ 106 107 /* values for machineid (happen to be AFF_* settings of AttnFlags) */ 108 #define AMIGA_68020 (1L<<1) 109 #define AMIGA_68030 (1L<<2) 110 #define AMIGA_68040 (1L<<3) 111 #define AMIGA_68881 (1L<<4) 112 #define AMIGA_68882 (1L<<5) 113 #define AMIGA_FPU40 (1L<<6) 114 #define AMIGA_68060 (1L<<7) 115 116 extern int machineid; 117 118 /* 119 * Prototypes from amiga_init.c 120 */ 121 void *alloc_z2mem(long); 122 123 /* 124 * Prototypes from autoconf.c 125 */ 126 int is_a600(void); 127 int is_a1200(void); 128 int is_a3000(void); 129 int is_a4000(void); 130 #ifdef DRACO 131 #define is_draco() ((machineid >> 24) == 0x7d ? (machineid >> 16) & 0xff : 0) 132 #endif 133 134 #ifdef DRACO 135 /* 136 * Prototypes from kbd.c 137 */ 138 void drkbdintr(void); 139 140 /* 141 * Prototypes from drsc.c 142 */ 143 void drsc_handler(void); 144 #endif 145 146 /* 147 * Prototypes from locore.s 148 */ 149 void clearseg(vm_offset_t); 150 void doboot(void) __attribute__((__noreturn__)); 151 void loadustp(int); 152 void physcopyseg(vm_offset_t, vm_offset_t); 153 u_int probeva(u_int, u_int); 154 155 /* 156 * Prototypes from machdep.c 157 */ 158 int badaddr(void *); 159 int badbaddr(void *); 160 void bootsync(void); 161 162 /* 163 * Prototypes from pmap.c: 164 */ 165 void pmap_bootstrap(vm_offset_t, vm_offset_t); 166 167 #endif /* _KERNEL */ 168 169 /* 170 * Reorder protection when accessing device registers. 171 */ 172 #define amiga_membarrier() 173 174 /* 175 * Finish all bus operations and flush pipelines. 176 */ 177 #define amiga_cpu_sync() __asm volatile ("nop") 178 179 #endif /* !_MACHINE_CPU_H_ */ 180