1 /*- 2 * Copyright (c) 1982, 1988, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)systm.h 8.7 (Berkeley) 3/29/95 39 * $FreeBSD: src/sys/sys/systm.h,v 1.111.2.18 2002/12/17 18:04:02 sam Exp $ 40 * $DragonFly: src/sys/sys/systm.h,v 1.2 2003/06/17 04:28:59 dillon Exp $ 41 */ 42 43 #ifndef _SYS_SYSTM_H_ 44 #define _SYS_SYSTM_H_ 45 46 #include <machine/atomic.h> 47 #include <machine/cpufunc.h> 48 #include <sys/callout.h> 49 50 extern int securelevel; /* system security level (see init(8)) */ 51 52 extern int cold; /* nonzero if we are doing a cold boot */ 53 extern const char *panicstr; /* panic message */ 54 extern int dumping; /* system is dumping */ 55 extern int safepri; /* safe ipl when cold or panicing */ 56 extern char version[]; /* system version */ 57 extern char copyright[]; /* system copyright */ 58 59 extern int nswap; /* size of swap space */ 60 61 extern int selwait; /* select timeout address */ 62 63 extern u_char curpriority; /* priority of current process */ 64 65 extern int physmem; /* physical memory */ 66 67 extern dev_t dumpdev; /* dump device */ 68 extern long dumplo; /* offset into dumpdev */ 69 70 extern dev_t rootdev; /* root device */ 71 extern dev_t rootdevs[2]; /* possible root devices */ 72 extern char *rootdevnames[2]; /* names of possible root devices */ 73 extern struct vnode *rootvp; /* vnode equivalent to above */ 74 75 extern int boothowto; /* reboot flags, from console subsystem */ 76 extern int bootverbose; /* nonzero to print verbose messages */ 77 78 extern int maxusers; /* system tune hint */ 79 80 #ifdef INVARIANTS /* The option is always available */ 81 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0) 82 #define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg) 83 #define CONDSPLASSERT(cond, level, msg) do { \ 84 if (cond) \ 85 SPLASSERT(level, msg); \ 86 } while (0) 87 #else 88 #define KASSERT(exp,msg) 89 #define SPLASSERT(level, msg) 90 #define CONDSPLASSERT(cond, level, msg) 91 #endif 92 93 /* 94 * General function declarations. 95 */ 96 97 struct clockframe; 98 struct malloc_type; 99 struct proc; 100 struct timeval; 101 struct tty; 102 struct uio; 103 104 void Debugger __P((const char *msg)); 105 int dumpstatus __P((vm_offset_t addr, off_t count)); 106 int nullop __P((void)); 107 int eopnotsupp __P((void)); 108 int einval __P((void)); 109 int seltrue __P((dev_t dev, int which, struct proc *p)); 110 int ureadc __P((int, struct uio *)); 111 void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask)); 112 void *phashinit __P((int count, struct malloc_type *type, u_long *nentries)); 113 114 void cpu_boot __P((int)); 115 void cpu_rootconf __P((void)); 116 extern uint32_t crc32_tab[]; 117 uint32_t crc32(const void *buf, size_t size); 118 void init_param1 __P((void)); 119 void init_param2 __P((int physpages)); 120 void tablefull __P((const char *)); 121 int addlog __P((const char *, ...)) __printflike(1, 2); 122 int kvprintf __P((char const *, void (*)(int, void*), void *, int, 123 _BSD_VA_LIST_)) __printflike(1, 0); 124 int log __P((int, const char *, ...)) __printflike(2, 3); 125 void logwakeup __P((void)); 126 void log_console __P((struct uio *)); 127 int printf __P((const char *, ...)) __printflike(1, 2); 128 int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4); 129 int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3); 130 int uprintf __P((const char *, ...)) __printflike(1, 2); 131 int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0); 132 int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0); 133 int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0); 134 int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3); 135 int sscanf __P((const char *, char const *, ...)); 136 int vsscanf __P((const char *, char const *, _BSD_VA_LIST_)); 137 long strtol __P((const char *, char **, int)); 138 u_long strtoul __P((const char *, char **, int)); 139 quad_t strtoq __P((const char *, char **, int)); 140 u_quad_t strtouq __P((const char *, char **, int)); 141 142 void bcopy __P((const void *from, void *to, size_t len)); 143 void ovbcopy __P((const void *from, void *to, size_t len)); 144 145 #ifdef __i386__ 146 extern void (*bzero) __P((void *buf, size_t len)); 147 #else 148 void bzero __P((void *buf, size_t len)); 149 #endif 150 151 void *memcpy __P((void *to, const void *from, size_t len)); 152 153 int copystr __P((const void *kfaddr, void *kdaddr, size_t len, 154 size_t *lencopied)); 155 int copyinstr __P((const void *udaddr, void *kaddr, size_t len, 156 size_t *lencopied)); 157 int copyin __P((const void *udaddr, void *kaddr, size_t len)); 158 int copyout __P((const void *kaddr, void *udaddr, size_t len)); 159 160 int fubyte __P((const void *base)); 161 int subyte __P((void *base, int byte)); 162 int suibyte __P((void *base, int byte)); 163 long fuword __P((const void *base)); 164 int suword __P((void *base, long word)); 165 int fusword __P((void *base)); 166 int susword __P((void *base, int word)); 167 168 void realitexpire __P((void *)); 169 170 void hardclock __P((struct clockframe *frame)); 171 void softclock __P((void)); 172 void statclock __P((struct clockframe *frame)); 173 174 void startprofclock __P((struct proc *)); 175 void stopprofclock __P((struct proc *)); 176 void setstatclockrate __P((int hzrate)); 177 178 char *getenv __P((const char *name)); 179 #define testenv getenv 180 #define freeenv 181 int getenv_int __P((const char *name, int *data)); 182 int getenv_string __P((const char *name, char *data, int size)); 183 int getenv_quad __P((const char *name, quad_t *data)); 184 extern char *kern_envp; 185 186 #ifdef APM_FIXUP_CALLTODO 187 void adjust_timeout_calltodo __P((struct timeval *time_change)); 188 #endif /* APM_FIXUP_CALLTODO */ 189 190 #include <sys/libkern.h> 191 192 /* Initialize the world */ 193 void consinit __P((void)); 194 void cpu_initclocks __P((void)); 195 void nchinit __P((void)); 196 void usrinfoinit __P((void)); 197 void vntblinit __P((void)); 198 199 /* Finalize the world. */ 200 void shutdown_nice __P((int)); 201 202 /* 203 * Kernel to clock driver interface. 204 */ 205 void inittodr __P((time_t base)); 206 void resettodr __P((void)); 207 void startrtclock __P((void)); 208 209 /* Timeouts */ 210 typedef void timeout_t __P((void *)); /* timeout function type */ 211 #define CALLOUT_HANDLE_INITIALIZER(handle) \ 212 { NULL } 213 214 void callout_handle_init __P((struct callout_handle *)); 215 struct callout_handle timeout __P((timeout_t *, void *, int)); 216 void untimeout __P((timeout_t *, void *, struct callout_handle)); 217 218 /* Interrupt management */ 219 220 /* 221 * For the alpha arch, some of these functions are static __inline, and 222 * the others should be. 223 */ 224 #ifdef __i386__ 225 void setdelayed __P((void)); 226 void setsoftast __P((void)); 227 void setsoftcambio __P((void)); 228 void setsoftcamnet __P((void)); 229 void setsoftclock __P((void)); 230 void setsoftcrypto __P((void)); 231 void setsoftnet __P((void)); 232 void setsofttty __P((void)); 233 void setsoftvm __P((void)); 234 void setsofttq __P((void)); 235 void schedsoftcamnet __P((void)); 236 void schedsoftcambio __P((void)); 237 void schedsoftnet __P((void)); 238 void schedsofttty __P((void)); 239 void schedsoftvm __P((void)); 240 void schedsofttq __P((void)); 241 intrmask_t softclockpending __P((void)); 242 void spl0 __P((void)); 243 intrmask_t splbio __P((void)); 244 intrmask_t splcam __P((void)); 245 intrmask_t splclock __P((void)); 246 intrmask_t splcrypto __P((void)); 247 intrmask_t splhigh __P((void)); 248 intrmask_t splimp __P((void)); 249 intrmask_t splnet __P((void)); 250 intrmask_t splsoftcam __P((void)); 251 intrmask_t splsoftcambio __P((void)); 252 intrmask_t splsoftcamnet __P((void)); 253 intrmask_t splsoftclock __P((void)); 254 intrmask_t splsofttty __P((void)); 255 intrmask_t splsoftvm __P((void)); 256 intrmask_t splsofttq __P((void)); 257 intrmask_t splstatclock __P((void)); 258 intrmask_t spltty __P((void)); 259 intrmask_t splvm __P((void)); 260 void splx __P((intrmask_t ipl)); 261 void splz __P((void)); 262 #endif /* __i386__ */ 263 264 #ifdef __alpha__ 265 #include <machine/ipl.h> 266 #endif 267 268 #ifdef INVARIANT_SUPPORT 269 void splbioassert __P((const char *msg)); 270 void splcamassert __P((const char *msg)); 271 void splclockassert __P((const char *msg)); 272 void splcryptoassert __P((const char *msg)); 273 void splhighassert __P((const char *msg)); 274 void splimpassert __P((const char *msg)); 275 void splnetassert __P((const char *msg)); 276 void splsoftcamassert __P((const char *msg)); 277 void splsoftcambioassert __P((const char *msg)); 278 void splsoftcamnetassert __P((const char *msg)); 279 void splsoftclockassert __P((const char *msg)); 280 void splsoftttyassert __P((const char *msg)); 281 void splsoftvmassert __P((const char *msg)); 282 void splsofttqassert __P((const char *msg)); 283 void splstatclockassert __P((const char *msg)); 284 void splttyassert __P((const char *msg)); 285 void splvmassert __P((const char *msg)); 286 #endif /* INVARIANT_SUPPORT */ 287 288 /* 289 * XXX It's not clear how "machine independent" these will be yet, but 290 * they are used all over the place especially in pci drivers. We would 291 * have to modify lots of drivers since <machine/cpufunc.h> no longer 292 * implicitly causes these to be defined when it #included <machine/spl.h> 293 */ 294 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */ 295 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */ 296 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */ 297 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */ 298 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */ 299 300 /* Read only */ 301 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */ 302 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */ 303 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */ 304 305 /* 306 * Various callout lists. 307 */ 308 309 /* Exit callout list declarations. */ 310 typedef void (*exitlist_fn) __P((struct proc *procp)); 311 312 int at_exit __P((exitlist_fn function)); 313 int rm_at_exit __P((exitlist_fn function)); 314 315 /* Fork callout list declarations. */ 316 typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child, 317 int flags)); 318 319 int at_fork __P((forklist_fn function)); 320 int rm_at_fork __P((forklist_fn function)); 321 322 /* 323 * Not exactly a callout LIST, but a callout entry. 324 * Allow an external module to define a hardware watchdog tickler. 325 * Normally a process would do this, but there are times when the 326 * kernel needs to be able to hold off the watchdog, when the process 327 * is not active, e.g., when dumping core. 328 */ 329 typedef void (*watchdog_tickle_fn) __P((void)); 330 331 extern watchdog_tickle_fn wdog_tickler; 332 333 /* 334 * Common `proc' functions are declared here so that proc.h can be included 335 * less often. 336 */ 337 int tsleep __P((void *chan, int pri, const char *wmesg, int timo)); 338 int asleep __P((void *chan, int pri, const char *wmesg, int timo)); 339 int await __P((int pri, int timo)); 340 void wakeup __P((void *chan)); 341 void wakeup_one __P((void *chan)); 342 343 /* 344 * Common `dev_t' stuff are declared here to avoid #include poisoning 345 */ 346 347 int major(dev_t x); 348 int minor(dev_t x); 349 dev_t makedev(int x, int y); 350 udev_t dev2udev(dev_t x); 351 dev_t udev2dev(udev_t x, int b); 352 int uminor(udev_t dev); 353 int umajor(udev_t dev); 354 udev_t makeudev(int x, int y); 355 #endif /* !_SYS_SYSTM_H_ */ 356