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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 1.22 2004/09/30 10:18:07 joerg 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)*/
87 extern int ncpus2; /* ncpus rounded down to power of 2 */
88 extern int ncpus2_shift; /* log base 2 of ncpus2 */
89 extern int ncpus2_mask; /* ncpus2 - 1 */
90 extern int clocks_running; /* timing/timeout subsystem is operational */
92 #ifdef INVARIANTS /* The option is always available */
93 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
94 #define KKASSERT(exp) if (!(exp)) panic("assertion: " #exp " in %s", __FUNCTION__)
95 #define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
96 #define CONDSPLASSERT(cond, level, msg) do { \
98 SPLASSERT(level, msg); \
101 #define KASSERT(exp,msg)
102 #define KKASSERT(exp)
103 #define SPLASSERT(level, msg)
104 #define CONDSPLASSERT(cond, level, msg)
107 #define CTASSERT(x) _CTASSERT(x, __LINE__)
108 #define _CTASSERT(x, y) __CTASSERT(x, y)
109 #define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
112 * General function declarations.
125 void Debugger (const char *msg);
126 void backtrace(void);
127 void mi_gdinit (struct globaldata *gd, int cpu);
128 int dumpstatus (vm_offset_t addr, off_t count);
130 int eopnotsupp (void);
132 int seltrue (dev_t dev, int which, struct thread *td);
133 int ureadc (int, struct uio *);
134 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
135 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
138 void cpu_rootconf (void);
139 extern uint32_t crc32_tab[];
140 uint32_t crc32(const void *buf, size_t size);
141 void init_param1 (void);
142 void init_param2 (int physpages);
143 void tablefull (const char *);
144 int addlog (const char *, ...) __printflike(1, 2);
145 int kvprintf (char const *, void (*)(int, void*), void *, int,
146 __va_list) __printflike(1, 0);
147 int log (int, const char *, ...) __printflike(2, 3);
148 void logwakeup (void);
149 void log_console (struct uio *);
150 int printf (const char *, ...) __printflike(1, 2);
151 int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
152 int sprintf (char *buf, const char *, ...) __printflike(2, 3);
153 int uprintf (const char *, ...) __printflike(1, 2);
154 int vprintf (const char *, __va_list) __printflike(1, 0);
155 int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
156 int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
157 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
158 int sscanf (const char *, char const *, ...);
159 int vsscanf (const char *, char const *, __va_list);
160 long strtol (const char *, char **, int);
161 u_long strtoul (const char *, char **, int);
162 quad_t strtoq (const char *, char **, int);
163 u_quad_t strtouq (const char *, char **, int);
166 * note: some functions commonly used by device drivers may be passed
167 * pointers to volatile storage, volatile set to avoid warnings.
169 void bcopy (volatile const void *from, volatile void *to, size_t len);
170 void ovbcopy (const void *from, void *to, size_t len);
173 extern void (*bzero) (volatile void *buf, size_t len);
175 void bzero (void *buf, size_t len);
178 void *memcpy (void *to, const void *from, size_t len);
180 int copystr (const void *kfaddr, void *kdaddr, size_t len,
182 int copyinstr (const void *udaddr, void *kaddr, size_t len,
184 int copyin (const void *udaddr, void *kaddr, size_t len);
185 int copyout (const void *kaddr, void *udaddr, size_t len);
187 int fubyte (const void *base);
188 int subyte (void *base, int byte);
189 int suibyte (void *base, int byte);
190 long fuword (const void *base);
191 int suword (void *base, long word);
192 int fusword (void *base);
193 int susword (void *base, int word);
195 void realitexpire (void *);
196 void DELAY(int usec);
198 void startprofclock (struct proc *);
199 void stopprofclock (struct proc *);
200 void setstatclockrate (int hzrate);
202 char *getenv (const char *name);
203 #define testenv getenv
205 int getenv_int (const char *name, int *data);
206 int getenv_string (const char *name, char *data, int size);
207 int getenv_quad (const char *name, quad_t *data);
208 extern char *kern_envp;
210 #ifdef APM_FIXUP_CALLTODO
211 void adjust_timeout_calltodo (struct timeval *time_change);
212 #endif /* APM_FIXUP_CALLTODO */
214 #include <sys/libkern.h>
216 /* Initialize the world */
217 void consinit (void);
218 void cpu_initclocks (void);
220 void usrinfoinit (void);
221 void vntblinit (void);
223 /* Finalize the world. */
224 void shutdown_nice (int);
227 * Kernel to clock driver interface.
229 void inittodr (time_t base);
230 void resettodr (void);
231 void startrtclock (void);
234 typedef void timeout_t (void *); /* timeout function type */
235 #define CALLOUT_HANDLE_INITIALIZER(handle) \
239 /* OBSOLETE INTERFACE */
240 void callout_handle_init (struct callout_handle *);
241 struct callout_handle timeout (timeout_t *, void *, int);
242 void untimeout (timeout_t *, void *, struct callout_handle);
245 /* Interrupt management */
248 * For the alpha arch, some of these functions are static __inline, and
249 * the others should be.
252 void setdelayed (void);
253 void setsoftast (void);
254 void setsoftcambio (void);
255 void setsoftcamnet (void);
256 void setsoftclock (void);
257 void setsoftcrypto (void);
258 void setsoftnet (void);
259 void setsofttty (void);
260 void setsoftvm (void);
261 void setsofttq (void);
262 void schedsoftcamnet (void);
263 void schedsoftcambio (void);
264 void schedsoftnet (void);
265 void schedsofttty (void);
266 void schedsoftvm (void);
267 void schedsofttq (void);
268 intrmask_t softclockpending (void);
270 intrmask_t splbio (void);
271 intrmask_t splcam (void);
272 intrmask_t splclock (void);
273 intrmask_t splcrypto (void);
274 intrmask_t splhigh (void);
275 intrmask_t splimp (void);
276 intrmask_t splnet (void);
277 intrmask_t splsoftcam (void);
278 intrmask_t splsoftcambio (void);
279 intrmask_t splsoftcamnet (void);
280 intrmask_t splsoftclock (void);
281 intrmask_t splsofttty (void);
282 intrmask_t splsoftvm (void);
283 intrmask_t splsofttq (void);
284 intrmask_t splstatclock (void);
285 intrmask_t spltty (void);
286 intrmask_t splvm (void);
287 void splx (intrmask_t ipl);
289 #endif /* __i386__ */
292 #include <machine/ipl.h>
295 #ifdef INVARIANT_SUPPORT
296 void splbioassert (const char *msg);
297 void splcamassert (const char *msg);
298 void splclockassert (const char *msg);
299 void splcryptoassert (const char *msg);
300 void splhighassert (const char *msg);
301 void splimpassert (const char *msg);
302 void splnetassert (const char *msg);
303 void splsoftcamassert (const char *msg);
304 void splsoftcambioassert (const char *msg);
305 void splsoftcamnetassert (const char *msg);
306 void splsoftclockassert (const char *msg);
307 void splsoftttyassert (const char *msg);
308 void splsoftvmassert (const char *msg);
309 void splsofttqassert (const char *msg);
310 void splstatclockassert (const char *msg);
311 void splttyassert (const char *msg);
312 void splvmassert (const char *msg);
313 #endif /* INVARIANT_SUPPORT */
316 * XXX It's not clear how "machine independent" these will be yet, but
317 * they are used all over the place especially in pci drivers. We would
318 * have to modify lots of drivers since <machine/cpufunc.h> no longer
319 * implicitly causes these to be defined when it #included <machine/spl.h>
321 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
322 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
323 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
324 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
325 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
328 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
329 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
330 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
333 * Various callout lists.
336 /* Exit callout list declarations. */
337 typedef void (*exitlist_fn) (struct thread *td);
339 int at_exit (exitlist_fn function);
340 int rm_at_exit (exitlist_fn function);
342 /* Fork callout list declarations. */
343 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
346 int at_fork (forklist_fn function);
347 int rm_at_fork (forklist_fn function);
350 * Not exactly a callout LIST, but a callout entry.
351 * Allow an external module to define a hardware watchdog tickler.
352 * Normally a process would do this, but there are times when the
353 * kernel needs to be able to hold off the watchdog, when the process
354 * is not active, e.g., when dumping core.
356 typedef void (*watchdog_tickle_fn) (void);
358 extern watchdog_tickle_fn wdog_tickler;
361 * Common `proc' functions are declared here so that proc.h can be included
364 int tsleep (void *chan, int slpflags, const char *wmesg, int timo);
365 void wakeup (void *chan);
366 void wakeup_one (void *chan);
369 * Common `dev_t' stuff are declared here to avoid #include poisoning
374 udev_t dev2udev(dev_t x);
375 dev_t udev2dev(udev_t x, int b);
376 int uminor(udev_t dev);
377 int umajor(udev_t dev);
378 udev_t makeudev(int x, int y);
379 #endif /* !_SYS_SYSTM_H_ */