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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
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 1.13 2003/08/20 07:31:21 rob Exp $
46 #include <machine/atomic.h>
47 #include <machine/cpufunc.h>
48 #include <sys/callout.h>
50 extern int securelevel; /* system security level (see init(8)) */
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 */
59 extern int nswap; /* size of swap space */
61 extern int selwait; /* select timeout address */
63 extern u_char curpriority; /* priority of current process */
65 extern int physmem; /* physical memory */
67 extern dev_t dumpdev; /* dump device */
68 extern long dumplo; /* offset into dumpdev */
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 */
75 extern int boothowto; /* reboot flags, from console subsystem */
76 extern int bootverbose; /* nonzero to print verbose messages */
78 extern int maxusers; /* system tune hint */
80 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
82 #ifdef INVARIANTS /* The option is always available */
83 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
84 #define KKASSERT(exp) if (!(exp)) panic("assertion: " #exp " in " __FUNCTION__)
85 #define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
86 #define CONDSPLASSERT(cond, level, msg) do { \
88 SPLASSERT(level, msg); \
91 #define KASSERT(exp,msg)
93 #define SPLASSERT(level, msg)
94 #define CONDSPLASSERT(cond, level, msg)
98 * General function declarations.
111 void Debugger (const char *msg);
112 void backtrace(void);
113 void mi_gdinit (struct globaldata *gd, int cpu);
114 int dumpstatus (vm_offset_t addr, off_t count);
116 int eopnotsupp (void);
118 int seltrue (dev_t dev, int which, struct thread *td);
119 int ureadc (int, struct uio *);
120 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
121 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
124 void cpu_rootconf (void);
125 extern uint32_t crc32_tab[];
126 uint32_t crc32(const void *buf, size_t size);
127 void init_param1 (void);
128 void init_param2 (int physpages);
129 void tablefull (const char *);
130 int addlog (const char *, ...) __printflike(1, 2);
131 int kvprintf (char const *, void (*)(int, void*), void *, int,
132 _BSD_VA_LIST_) __printflike(1, 0);
133 int log (int, const char *, ...) __printflike(2, 3);
134 void logwakeup (void);
135 void log_console (struct uio *);
136 int printf (const char *, ...) __printflike(1, 2);
137 int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
138 int sprintf (char *buf, const char *, ...) __printflike(2, 3);
139 int uprintf (const char *, ...) __printflike(1, 2);
140 int vprintf (const char *, _BSD_VA_LIST_) __printflike(1, 0);
141 int vsnprintf (char *, size_t, const char *, _BSD_VA_LIST_) __printflike(3, 0);
142 int vsprintf (char *buf, const char *, _BSD_VA_LIST_) __printflike(2, 0);
143 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
144 int sscanf (const char *, char const *, ...);
145 int vsscanf (const char *, char const *, _BSD_VA_LIST_);
146 long strtol (const char *, char **, int);
147 u_long strtoul (const char *, char **, int);
148 quad_t strtoq (const char *, char **, int);
149 u_quad_t strtouq (const char *, char **, int);
152 * note: some functions commonly used by device drivers may be passed
153 * pointers to volatile storage, volatile set to avoid warnings.
155 void bcopy (volatile const void *from, volatile void *to, size_t len);
156 void ovbcopy (const void *from, void *to, size_t len);
159 extern void (*bzero) (volatile void *buf, size_t len);
161 void bzero (void *buf, size_t len);
164 void *memcpy (void *to, const void *from, size_t len);
166 int copystr (const void *kfaddr, void *kdaddr, size_t len,
168 int copyinstr (const void *udaddr, void *kaddr, size_t len,
170 int copyin (const void *udaddr, void *kaddr, size_t len);
171 int copyout (const void *kaddr, void *udaddr, size_t len);
173 int fubyte (const void *base);
174 int subyte (void *base, int byte);
175 int suibyte (void *base, int byte);
176 long fuword (const void *base);
177 int suword (void *base, long word);
178 int fusword (void *base);
179 int susword (void *base, int word);
181 void realitexpire (void *);
182 void DELAY(int usec);
183 void hardclock (struct clockframe *frame);
184 void statclock (struct clockframe *frame);
186 void startprofclock (struct proc *);
187 void stopprofclock (struct proc *);
188 void setstatclockrate (int hzrate);
190 char *getenv (const char *name);
191 #define testenv getenv
193 int getenv_int (const char *name, int *data);
194 int getenv_string (const char *name, char *data, int size);
195 int getenv_quad (const char *name, quad_t *data);
196 extern char *kern_envp;
198 #ifdef APM_FIXUP_CALLTODO
199 void adjust_timeout_calltodo (struct timeval *time_change);
200 #endif /* APM_FIXUP_CALLTODO */
202 #include <sys/libkern.h>
204 /* Initialize the world */
205 void consinit (void);
206 void cpu_initclocks (void);
208 void usrinfoinit (void);
209 void vntblinit (void);
211 /* Finalize the world. */
212 void shutdown_nice (int);
215 * Kernel to clock driver interface.
217 void inittodr (time_t base);
218 void resettodr (void);
219 void startrtclock (void);
222 typedef void timeout_t (void *); /* timeout function type */
223 #define CALLOUT_HANDLE_INITIALIZER(handle) \
226 void callout_handle_init (struct callout_handle *);
227 struct callout_handle timeout (timeout_t *, void *, int);
228 void untimeout (timeout_t *, void *, struct callout_handle);
230 /* Interrupt management */
233 * For the alpha arch, some of these functions are static __inline, and
234 * the others should be.
237 void setdelayed (void);
238 void setsoftast (void);
239 void setsoftcambio (void);
240 void setsoftcamnet (void);
241 void setsoftclock (void);
242 void setsoftcrypto (void);
243 void setsoftnet (void);
244 void setsofttty (void);
245 void setsoftvm (void);
246 void setsofttq (void);
247 void schedsoftcamnet (void);
248 void schedsoftcambio (void);
249 void schedsoftnet (void);
250 void schedsofttty (void);
251 void schedsoftvm (void);
252 void schedsofttq (void);
253 intrmask_t softclockpending (void);
255 intrmask_t splbio (void);
256 intrmask_t splcam (void);
257 intrmask_t splclock (void);
258 intrmask_t splcrypto (void);
259 intrmask_t splhigh (void);
260 intrmask_t splimp (void);
261 intrmask_t splnet (void);
262 intrmask_t splsoftcam (void);
263 intrmask_t splsoftcambio (void);
264 intrmask_t splsoftcamnet (void);
265 intrmask_t splsoftclock (void);
266 intrmask_t splsofttty (void);
267 intrmask_t splsoftvm (void);
268 intrmask_t splsofttq (void);
269 intrmask_t splstatclock (void);
270 intrmask_t spltty (void);
271 intrmask_t splvm (void);
272 void splx (intrmask_t ipl);
274 #endif /* __i386__ */
277 #include <machine/ipl.h>
280 #ifdef INVARIANT_SUPPORT
281 void splbioassert (const char *msg);
282 void splcamassert (const char *msg);
283 void splclockassert (const char *msg);
284 void splcryptoassert (const char *msg);
285 void splhighassert (const char *msg);
286 void splimpassert (const char *msg);
287 void splnetassert (const char *msg);
288 void splsoftcamassert (const char *msg);
289 void splsoftcambioassert (const char *msg);
290 void splsoftcamnetassert (const char *msg);
291 void splsoftclockassert (const char *msg);
292 void splsoftttyassert (const char *msg);
293 void splsoftvmassert (const char *msg);
294 void splsofttqassert (const char *msg);
295 void splstatclockassert (const char *msg);
296 void splttyassert (const char *msg);
297 void splvmassert (const char *msg);
298 #endif /* INVARIANT_SUPPORT */
301 * XXX It's not clear how "machine independent" these will be yet, but
302 * they are used all over the place especially in pci drivers. We would
303 * have to modify lots of drivers since <machine/cpufunc.h> no longer
304 * implicitly causes these to be defined when it #included <machine/spl.h>
306 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
307 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
308 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
309 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
310 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
313 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
314 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
315 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
318 * Various callout lists.
321 /* Exit callout list declarations. */
322 typedef void (*exitlist_fn) (struct thread *td);
324 int at_exit (exitlist_fn function);
325 int rm_at_exit (exitlist_fn function);
327 /* Fork callout list declarations. */
328 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
331 int at_fork (forklist_fn function);
332 int rm_at_fork (forklist_fn function);
335 * Not exactly a callout LIST, but a callout entry.
336 * Allow an external module to define a hardware watchdog tickler.
337 * Normally a process would do this, but there are times when the
338 * kernel needs to be able to hold off the watchdog, when the process
339 * is not active, e.g., when dumping core.
341 typedef void (*watchdog_tickle_fn) (void);
343 extern watchdog_tickle_fn wdog_tickler;
346 * Common `proc' functions are declared here so that proc.h can be included
349 int tsleep (void *chan, int slpflags, const char *wmesg, int timo);
350 void wakeup (void *chan);
351 void wakeup_one (void *chan);
354 * Common `dev_t' stuff are declared here to avoid #include poisoning
359 dev_t makedev(int x, int y);
360 udev_t dev2udev(dev_t x);
361 dev_t udev2dev(udev_t x, int b);
362 int uminor(udev_t dev);
363 int umajor(udev_t dev);
364 udev_t makeudev(int x, int y);
365 #endif /* !_SYS_SYSTM_H_ */