1 /* $NetBSD: cpu.h,v 1.15 2003/01/21 21:59:49 jdolecek 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. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 41 * 42 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 43 */ 44 45 #ifndef _NEWS68K_CPU_H_ 46 #define _NEWS68K_CPU_H_ 47 48 /* 49 * Exported definitions unique to news68k cpu support. 50 */ 51 52 #if defined(_KERNEL_OPT) 53 #include "opt_lockdebug.h" 54 #endif 55 56 /* 57 * Get common m68k CPU definitions. 58 */ 59 #include <m68k/cpu.h> 60 61 /* 62 * XXX news1700 L2 cache would be corrupted with DC_BE and IC_BE... 63 * XXX Should these be defined in machine/cpu.h? 64 */ 65 #undef CACHE_ON 66 #undef CACHE_CLR 67 #undef IC_CLEAR 68 #undef DC_CLEAR 69 #define CACHE_ON (DC_WA|DC_CLR|DC_ENABLE|IC_CLR|IC_ENABLE) 70 #define CACHE_CLR CACHE_ON 71 #define IC_CLEAR (DC_WA|DC_ENABLE|IC_CLR|IC_ENABLE) 72 #define DC_CLEAR (DC_WA|DC_CLR|DC_ENABLE|IC_ENABLE) 73 74 #define DCIC_CLR (DC_CLR|IC_CLR) 75 #define CACHE_BE (DC_BE|IC_BE) 76 77 /* 78 * Get interrupt glue. 79 */ 80 #include <machine/intr.h> 81 82 #include <sys/sched.h> 83 struct cpu_info { 84 struct schedstate_percpu ci_schedstate; /* scheduler state */ 85 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 86 u_long ci_spin_locks; /* # of spin locks held */ 87 u_long ci_simple_locks; /* # of simple locks held */ 88 #endif 89 }; 90 91 #ifdef _KERNEL 92 extern struct cpu_info cpu_info_store; 93 94 #define curcpu() (&cpu_info_store) 95 96 /* 97 * definitions of cpu-dependent requirements 98 * referenced in generic code 99 */ 100 #define cpu_swapin(p) /* nothing */ 101 #define cpu_wait(p) /* nothing */ 102 #define cpu_swapout(p) /* nothing */ 103 #define cpu_number() 0 104 105 void cpu_proc_fork(struct proc *, struct proc *); 106 107 /* 108 * Arguments to hardclock and gatherstats encapsulate the previous 109 * machine state in an opaque clockframe. One the hp300, we use 110 * what the hardware pushes on an interrupt (frame format 0). 111 */ 112 struct clockframe { 113 u_short sr; /* sr at time of interrupt */ 114 u_long pc; /* pc at time of interrupt */ 115 u_short vo; /* vector offset (4-word frame) */ 116 }; 117 118 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 119 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 120 #define CLKF_PC(framep) ((framep)->pc) 121 #if 0 122 /* We would like to do it this way... */ 123 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 124 #else 125 /* but until we start using PSL_M, we have to do this instead */ 126 #define CLKF_INTR(framep) (0) /* XXX */ 127 #endif 128 129 130 /* 131 * Preempt the current process if in interrupt from user mode, 132 * or after the current trap/syscall if in system mode. 133 */ 134 extern int want_resched; /* resched() was called */ 135 #define need_resched(ci) do { want_resched++; aston(); } while(0) 136 137 /* 138 * Give a profiling tick to the current process when the user profiling 139 * buffer pages are invalid. On the hp300, request an ast to send us 140 * through trap, marking the proc as needing a profiling tick. 141 */ 142 #define need_proftick(p) do { (p)->p_flag |= P_OWEUPC; aston(); } while(0) 143 144 /* 145 * Notify the current process (p) that it has a signal pending, 146 * process as soon as possible. 147 */ 148 #define signotify(p) aston() 149 150 extern int astpending; /* need to trap before returning to user mode */ 151 extern volatile u_char *ctrl_ast; 152 #define aston() do { astpending++; *ctrl_ast = 0xff; } while(0) 153 154 #endif /* _KERNEL */ 155 156 /* 157 * CTL_MACHDEP definitions. 158 */ 159 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 160 #define CPU_MAXID 2 /* number of valid machdep ids */ 161 162 #define CTL_MACHDEP_NAMES { \ 163 { 0, 0 }, \ 164 { "console_device", CTLTYPE_STRUCT }, \ 165 } 166 167 #ifdef _KERNEL 168 169 #if defined(news1700) || defined(news1200) 170 #ifndef M68030 171 #define M68030 172 #endif 173 #define M68K_MMU_MOTOROLA 174 #endif 175 176 #if defined(news1700) 177 #define CACHE_HAVE_PAC 178 #endif 179 180 #endif 181 182 #ifdef _KERNEL 183 extern int systype; 184 #define NEWS1700 0 185 #define NEWS1200 1 186 187 extern int cpuspeed; 188 extern char *intiobase, *intiolimit, *extiobase; 189 extern u_int intiobase_phys, intiotop_phys; 190 extern u_int extiobase_phys, extiotop_phys; 191 extern u_int intrcnt[]; 192 193 extern void (*vectab[])(void); 194 195 struct frame; 196 struct fpframe; 197 struct pcb; 198 199 /* locore.s functions */ 200 void m68881_save(struct fpframe *); 201 void m68881_restore(struct fpframe *); 202 203 int suline(caddr_t, caddr_t); 204 void savectx(struct pcb *); 205 void switch_exit(struct lwp *); 206 void switch_lwp_exit(struct lwp *); 207 void proc_trampoline(void); 208 void loadustp(int); 209 void badtrap(void); 210 void intrhand_vectored(void); 211 int getsr(void); 212 213 214 void doboot(int) 215 __attribute__((__noreturn__)); 216 void nmihand(struct frame *); 217 void ecacheon(void); 218 void ecacheoff(void); 219 220 /* machdep.c functions */ 221 int badaddr(caddr_t, int); 222 int badbaddr(caddr_t); 223 224 /* sys_machdep.c functions */ 225 int cachectl1(unsigned long, vaddr_t, size_t, struct proc *); 226 227 /* vm_machdep.c functions */ 228 void physaccess(caddr_t, caddr_t, int, int); 229 void physunaccess(caddr_t, int); 230 int kvtop(caddr_t); 231 232 #endif 233 234 /* physical memory sections */ 235 #define ROMBASE (0xe0000000) 236 237 #define INTIOBASE1700 (0xe0c00000) 238 #define INTIOTOP1700 (0xe1d00000) /* XXX */ 239 #define EXTIOBASE1700 (0xf0f00000) 240 #define EXTIOTOP1700 (0xf1000000) /* XXX */ 241 242 #define INTIOBASE1200 (0xe1000000) 243 #define INTIOTOP1200 (0xe1d00000) /* XXX */ 244 #define EXTIOBASE1200 (0xe4000000) 245 #define EXTIOTOP1200 (0xe4020000) /* XXX */ 246 247 #define MAXADDR (0xfffff000) 248 249 /* 250 * Internal IO space: 251 * 252 * Internal IO space is mapped in the kernel from ``intiobase'' to 253 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 254 * conversion between physical and kernel virtual addresses is easy. 255 */ 256 #define ISIIOVA(va) \ 257 ((char *)(va) >= intiobase && (char *)(va) < intiolimit) 258 #define IIOV(pa) (((u_int)(pa) - intiobase_phys) + (u_int)intiobase) 259 #define ISIIOPA(pa) \ 260 ((u_int)(pa) >= intiobase_phys && (u_int)(pa) < intiotop_phys) 261 #define IIOP(va) (((u_int)(va) - (u_int)intiobase) + intiobase_phys) 262 #define IIOPOFF(pa) ((u_int)(pa) - intiobase_phys) 263 264 /* XXX EIO space mapping should be modified like hp300 XXX */ 265 #define EIOSIZE (extiotop_phys - extiobase_phys) 266 #define ISEIOVA(va) \ 267 ((char *)(va) >= extiobase && (char *)(va) < (char *)EIOSIZE) 268 #define EIOV(pa) (((u_int)(pa) - extiobase_phys) + (u_int)extiobase) 269 270 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 271 #define M68K_CACHEOPS_MACHDEP 272 #endif 273 274 #ifdef CACHE_HAVE_PAC 275 #define M68K_CACHEOPS_MACHDEP_PCIA 276 #endif 277 278 #ifdef CACHE_HAVE_VAC 279 #define M68K_CACHEOPS_MACHDEP_DCIA 280 #define M68K_CACHEOPS_MACHDEP_DCIS 281 #define M68K_CACHEOPS_MACHDEP_DCIU 282 #endif 283 284 #endif /* !_NEWS68K_CPU_H_ */ 285