1 /* $NetBSD: cpu.h,v 1.43 2016/12/17 14:36:30 flxd 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 _NEWS68K_CPU_H_ 42 #define _NEWS68K_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 news68k cpu support. 57 */ 58 59 /* 60 * XXX news1700 L2 cache would be corrupted with DC_BE and IC_BE... 61 * XXX Should these be defined in machine/cpu.h? 62 */ 63 #undef CACHE_ON 64 #undef CACHE_CLR 65 #undef IC_CLEAR 66 #undef DC_CLEAR 67 #define CACHE_ON (DC_WA|DC_CLR|DC_ENABLE|IC_CLR|IC_ENABLE) 68 #define CACHE_CLR CACHE_ON 69 #define IC_CLEAR (DC_WA|DC_ENABLE|IC_CLR|IC_ENABLE) 70 #define DC_CLEAR (DC_WA|DC_CLR|DC_ENABLE|IC_ENABLE) 71 72 #define DCIC_CLR (DC_CLR|IC_CLR) 73 #define CACHE_BE (DC_BE|IC_BE) 74 75 /* 76 * Get interrupt glue. 77 */ 78 #include <machine/intr.h> 79 80 /* 81 * Arguments to hardclock and gatherstats encapsulate the previous 82 * machine state in an opaque clockframe. On the news68k, we use 83 * what the hardware pushes on an interrupt (frame format 0). 84 */ 85 struct clockframe { 86 u_short sr; /* sr at time of interrupt */ 87 u_long pc; /* pc at time of interrupt */ 88 u_short vo; /* vector offset (4-word frame) */ 89 }; 90 91 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 92 #define CLKF_PC(framep) ((framep)->pc) 93 #if 0 94 /* We would like to do it this way... */ 95 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 96 #else 97 /* but until we start using PSL_M, we have to do this instead */ 98 #include <machine/intr.h> 99 #define CLKF_INTR(framep) (idepth > 1) /* XXX */ 100 #endif 101 102 103 /* 104 * Preempt the current process if in interrupt from user mode, 105 * or after the current trap/syscall if in system mode. 106 */ 107 #define cpu_need_resched(ci,flags) do { \ 108 __USE(flags); \ 109 ci->ci_want_resched = 1; \ 110 aston(); \ 111 } while (/*CONSTCOND*/0) 112 113 /* 114 * Give a profiling tick to the current process when the user profiling 115 * buffer pages are invalid. On the news68k, request an ast to send us 116 * through trap, marking the proc as needing a profiling tick. 117 */ 118 #define cpu_need_proftick(l) \ 119 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0) 120 121 /* 122 * Notify the current process (p) that it has a signal pending, 123 * process as soon as possible. 124 */ 125 #define cpu_signotify(l) aston() 126 127 extern int astpending; /* need to trap before returning to user mode */ 128 extern volatile u_char *ctrl_ast; 129 #define aston() \ 130 do { astpending++; *ctrl_ast = 0xff; } while (/* CONSTCOND */0) 131 132 #endif /* _KERNEL */ 133 134 /* 135 * CTL_MACHDEP definitions. 136 */ 137 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 138 #define CPU_MAXID 2 /* number of valid machdep ids */ 139 140 #ifdef _KERNEL 141 142 #if defined(news1700) || defined(news1200) 143 #ifndef M68030 144 #define M68030 145 #endif 146 #define M68K_MMU_MOTOROLA 147 #endif 148 149 #if defined(news1700) 150 #define CACHE_HAVE_PAC 151 #endif 152 153 #endif 154 155 #ifdef _KERNEL 156 extern int systype; 157 #define NEWS1700 0 158 #define NEWS1200 1 159 160 extern int cpuspeed; 161 extern char *intiobase, *intiolimit, *extiobase; 162 extern u_int intiobase_phys, intiotop_phys; 163 extern u_int extiobase_phys, extiotop_phys; 164 extern u_int intrcnt[]; 165 166 extern void (*vectab[])(void); 167 extern void *romcallvec; 168 169 struct frame; 170 171 /* locore.s functions */ 172 int suline(void *, void *); 173 void loadustp(int); 174 void badtrap(void); 175 void intrhand_vectored(void); 176 int getsr(void); 177 178 179 void doboot(int) 180 __attribute__((__noreturn__)); 181 void nmihand(struct frame *); 182 void ecacheon(void); 183 void ecacheoff(void); 184 185 /* machdep.c functions */ 186 int badaddr(void *, int); 187 int badbaddr(void *); 188 189 #endif 190 191 /* physical memory sections */ 192 #define ROMBASE 0xe0000000 193 194 #define INTIOBASE1700 0xe0c00000 195 #define INTIOTOP1700 0xe1d00000 /* XXX */ 196 #define EXTIOBASE1700 0xf0f00000 197 #define EXTIOTOP1700 0xf1000000 /* XXX */ 198 #define CTRL_POWER1700 0xe1380000 199 #define CTRL_LED1700 0xe0dc0000 200 201 #define INTIOBASE1200 0xe1000000 202 #define INTIOTOP1200 0xe1d00000 /* XXX */ 203 #define EXTIOBASE1200 0xe4000000 204 #define EXTIOTOP1200 0xe4020000 /* XXX */ 205 #define CTRL_POWER1200 0xe1000000 206 #define CTRL_LED1200 0xe1500001 207 208 #define MAXADDR 0xfffff000 209 210 /* 211 * Internal IO space: 212 * 213 * Internal IO space is mapped in the kernel from ``intiobase'' to 214 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 215 * conversion between physical and kernel virtual addresses is easy. 216 */ 217 #define ISIIOVA(va) \ 218 ((char *)(va) >= intiobase && (char *)(va) < intiolimit) 219 #define IIOV(pa) (((u_int)(pa) - intiobase_phys) + (u_int)intiobase) 220 #define ISIIOPA(pa) \ 221 ((u_int)(pa) >= intiobase_phys && (u_int)(pa) < intiotop_phys) 222 #define IIOP(va) (((u_int)(va) - (u_int)intiobase) + intiobase_phys) 223 #define IIOPOFF(pa) ((u_int)(pa) - intiobase_phys) 224 225 /* XXX EIO space mapping should be modified like hp300 XXX */ 226 #define EIOSIZE (extiotop_phys - extiobase_phys) 227 #define ISEIOVA(va) \ 228 ((char *)(va) >= extiobase && (char *)(va) < (char *)EIOSIZE) 229 #define EIOV(pa) (((u_int)(pa) - extiobase_phys) + (u_int)extiobase) 230 231 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 232 #define M68K_CACHEOPS_MACHDEP 233 #endif 234 235 #ifdef CACHE_HAVE_PAC 236 #define M68K_CACHEOPS_MACHDEP_PCIA 237 #endif 238 239 #ifdef CACHE_HAVE_VAC 240 #define M68K_CACHEOPS_MACHDEP_DCIA 241 #define M68K_CACHEOPS_MACHDEP_DCIS 242 #define M68K_CACHEOPS_MACHDEP_DCIU 243 #endif 244 245 #endif /* !_NEWS68K_CPU_H_ */ 246