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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 1.15 2003/11/09 02:22:37 dillon Exp $
46 #ifndef _MACHINE_TYPES_H_
47 #include <machine/types.h>
49 #ifndef _MACHINE_STDARG_H_
50 #include <machine/stdarg.h>
52 #include <machine/atomic.h>
53 #include <machine/cpufunc.h>
54 #include <sys/callout.h>
56 extern int securelevel; /* system security level (see init(8)) */
58 extern int cold; /* nonzero if we are doing a cold boot */
59 extern const char *panicstr; /* panic message */
60 extern int dumping; /* system is dumping */
61 extern int safepri; /* safe ipl when cold or panicing */
62 extern char version[]; /* system version */
63 extern char copyright[]; /* system copyright */
65 extern int nswap; /* size of swap space */
67 extern int selwait; /* select timeout address */
69 extern u_char curpriority; /* priority of current process */
71 extern int physmem; /* physical memory */
73 extern dev_t dumpdev; /* dump device */
74 extern long dumplo; /* offset into dumpdev */
76 extern dev_t rootdev; /* root device */
77 extern dev_t rootdevs[2]; /* possible root devices */
78 extern char *rootdevnames[2]; /* names of possible root devices */
79 extern struct vnode *rootvp; /* vnode equivalent to above */
81 extern int boothowto; /* reboot flags, from console subsystem */
82 extern int bootverbose; /* nonzero to print verbose messages */
84 extern int maxusers; /* system tune hint */
86 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
88 #ifdef INVARIANTS /* The option is always available */
89 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
90 #define KKASSERT(exp) if (!(exp)) panic("assertion: " #exp " in " __FUNCTION__)
91 #define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
92 #define CONDSPLASSERT(cond, level, msg) do { \
94 SPLASSERT(level, msg); \
97 #define KASSERT(exp,msg)
99 #define SPLASSERT(level, msg)
100 #define CONDSPLASSERT(cond, level, msg)
104 * General function declarations.
117 void Debugger (const char *msg);
118 void backtrace(void);
119 void mi_gdinit (struct globaldata *gd, int cpu);
120 int dumpstatus (vm_offset_t addr, off_t count);
122 int eopnotsupp (void);
124 int seltrue (dev_t dev, int which, struct thread *td);
125 int ureadc (int, struct uio *);
126 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
127 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
130 void cpu_rootconf (void);
131 extern uint32_t crc32_tab[];
132 uint32_t crc32(const void *buf, size_t size);
133 void init_param1 (void);
134 void init_param2 (int physpages);
135 void tablefull (const char *);
136 int addlog (const char *, ...) __printflike(1, 2);
137 int kvprintf (char const *, void (*)(int, void*), void *, int,
138 __va_list) __printflike(1, 0);
139 int log (int, const char *, ...) __printflike(2, 3);
140 void logwakeup (void);
141 void log_console (struct uio *);
142 int printf (const char *, ...) __printflike(1, 2);
143 int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
144 int sprintf (char *buf, const char *, ...) __printflike(2, 3);
145 int uprintf (const char *, ...) __printflike(1, 2);
146 int vprintf (const char *, __va_list) __printflike(1, 0);
147 int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
148 int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
149 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
150 int sscanf (const char *, char const *, ...);
151 int vsscanf (const char *, char const *, __va_list);
152 long strtol (const char *, char **, int);
153 u_long strtoul (const char *, char **, int);
154 quad_t strtoq (const char *, char **, int);
155 u_quad_t strtouq (const char *, char **, int);
158 * note: some functions commonly used by device drivers may be passed
159 * pointers to volatile storage, volatile set to avoid warnings.
161 void bcopy (volatile const void *from, volatile void *to, size_t len);
162 void ovbcopy (const void *from, void *to, size_t len);
165 extern void (*bzero) (volatile void *buf, size_t len);
167 void bzero (void *buf, size_t len);
170 void *memcpy (void *to, const void *from, size_t len);
172 int copystr (const void *kfaddr, void *kdaddr, size_t len,
174 int copyinstr (const void *udaddr, void *kaddr, size_t len,
176 int copyin (const void *udaddr, void *kaddr, size_t len);
177 int copyout (const void *kaddr, void *udaddr, size_t len);
179 int fubyte (const void *base);
180 int subyte (void *base, int byte);
181 int suibyte (void *base, int byte);
182 long fuword (const void *base);
183 int suword (void *base, long word);
184 int fusword (void *base);
185 int susword (void *base, int word);
187 void realitexpire (void *);
188 void DELAY(int usec);
189 void hardclock (struct clockframe *frame);
190 void statclock (struct clockframe *frame);
192 void startprofclock (struct proc *);
193 void stopprofclock (struct proc *);
194 void setstatclockrate (int hzrate);
196 char *getenv (const char *name);
197 #define testenv getenv
199 int getenv_int (const char *name, int *data);
200 int getenv_string (const char *name, char *data, int size);
201 int getenv_quad (const char *name, quad_t *data);
202 extern char *kern_envp;
204 #ifdef APM_FIXUP_CALLTODO
205 void adjust_timeout_calltodo (struct timeval *time_change);
206 #endif /* APM_FIXUP_CALLTODO */
208 #include <sys/libkern.h>
210 /* Initialize the world */
211 void consinit (void);
212 void cpu_initclocks (void);
214 void usrinfoinit (void);
215 void vntblinit (void);
217 /* Finalize the world. */
218 void shutdown_nice (int);
221 * Kernel to clock driver interface.
223 void inittodr (time_t base);
224 void resettodr (void);
225 void startrtclock (void);
228 typedef void timeout_t (void *); /* timeout function type */
229 #define CALLOUT_HANDLE_INITIALIZER(handle) \
232 void callout_handle_init (struct callout_handle *);
233 struct callout_handle timeout (timeout_t *, void *, int);
234 void untimeout (timeout_t *, void *, struct callout_handle);
236 /* Interrupt management */
239 * For the alpha arch, some of these functions are static __inline, and
240 * the others should be.
243 void setdelayed (void);
244 void setsoftast (void);
245 void setsoftcambio (void);
246 void setsoftcamnet (void);
247 void setsoftclock (void);
248 void setsoftcrypto (void);
249 void setsoftnet (void);
250 void setsofttty (void);
251 void setsoftvm (void);
252 void setsofttq (void);
253 void schedsoftcamnet (void);
254 void schedsoftcambio (void);
255 void schedsoftnet (void);
256 void schedsofttty (void);
257 void schedsoftvm (void);
258 void schedsofttq (void);
259 intrmask_t softclockpending (void);
261 intrmask_t splbio (void);
262 intrmask_t splcam (void);
263 intrmask_t splclock (void);
264 intrmask_t splcrypto (void);
265 intrmask_t splhigh (void);
266 intrmask_t splimp (void);
267 intrmask_t splnet (void);
268 intrmask_t splsoftcam (void);
269 intrmask_t splsoftcambio (void);
270 intrmask_t splsoftcamnet (void);
271 intrmask_t splsoftclock (void);
272 intrmask_t splsofttty (void);
273 intrmask_t splsoftvm (void);
274 intrmask_t splsofttq (void);
275 intrmask_t splstatclock (void);
276 intrmask_t spltty (void);
277 intrmask_t splvm (void);
278 void splx (intrmask_t ipl);
280 #endif /* __i386__ */
283 #include <machine/ipl.h>
286 #ifdef INVARIANT_SUPPORT
287 void splbioassert (const char *msg);
288 void splcamassert (const char *msg);
289 void splclockassert (const char *msg);
290 void splcryptoassert (const char *msg);
291 void splhighassert (const char *msg);
292 void splimpassert (const char *msg);
293 void splnetassert (const char *msg);
294 void splsoftcamassert (const char *msg);
295 void splsoftcambioassert (const char *msg);
296 void splsoftcamnetassert (const char *msg);
297 void splsoftclockassert (const char *msg);
298 void splsoftttyassert (const char *msg);
299 void splsoftvmassert (const char *msg);
300 void splsofttqassert (const char *msg);
301 void splstatclockassert (const char *msg);
302 void splttyassert (const char *msg);
303 void splvmassert (const char *msg);
304 #endif /* INVARIANT_SUPPORT */
307 * XXX It's not clear how "machine independent" these will be yet, but
308 * they are used all over the place especially in pci drivers. We would
309 * have to modify lots of drivers since <machine/cpufunc.h> no longer
310 * implicitly causes these to be defined when it #included <machine/spl.h>
312 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
313 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
314 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
315 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
316 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
319 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
320 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
321 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
324 * Various callout lists.
327 /* Exit callout list declarations. */
328 typedef void (*exitlist_fn) (struct thread *td);
330 int at_exit (exitlist_fn function);
331 int rm_at_exit (exitlist_fn function);
333 /* Fork callout list declarations. */
334 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
337 int at_fork (forklist_fn function);
338 int rm_at_fork (forklist_fn function);
341 * Not exactly a callout LIST, but a callout entry.
342 * Allow an external module to define a hardware watchdog tickler.
343 * Normally a process would do this, but there are times when the
344 * kernel needs to be able to hold off the watchdog, when the process
345 * is not active, e.g., when dumping core.
347 typedef void (*watchdog_tickle_fn) (void);
349 extern watchdog_tickle_fn wdog_tickler;
352 * Common `proc' functions are declared here so that proc.h can be included
355 int tsleep (void *chan, int slpflags, const char *wmesg, int timo);
356 void wakeup (void *chan);
357 void wakeup_one (void *chan);
360 * Common `dev_t' stuff are declared here to avoid #include poisoning
365 dev_t makedev(int x, int y);
366 udev_t dev2udev(dev_t x);
367 dev_t udev2dev(udev_t x, int b);
368 int uminor(udev_t dev);
369 int umajor(udev_t dev);
370 udev_t makeudev(int x, int y);
371 #endif /* !_SYS_SYSTM_H_ */