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
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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
45 #include <machine/atomic.h>
46 #include <machine/cpufunc.h>
47 #include <sys/callout.h>
49 extern int securelevel; /* system security level (see init(8)) */
51 extern int cold; /* nonzero if we are doing a cold boot */
52 extern const char *panicstr; /* panic message */
53 extern int safepri; /* safe ipl when cold or panicing */
54 extern char version[]; /* system version */
55 extern char copyright[]; /* system copyright */
57 extern int nswap; /* size of swap space */
59 extern int selwait; /* select timeout address */
61 extern u_char curpriority; /* priority of current process */
63 extern int physmem; /* physical memory */
65 extern dev_t dumpdev; /* dump device */
66 extern long dumplo; /* offset into dumpdev */
68 extern dev_t rootdev; /* root device */
69 extern dev_t rootdevs[2]; /* possible root devices */
70 extern char *rootdevnames[2]; /* names of possible root devices */
71 extern struct vnode *rootvp; /* vnode equivalent to above */
73 extern int boothowto; /* reboot flags, from console subsystem */
74 extern int bootverbose; /* nonzero to print verbose messages */
76 #ifdef INVARIANTS /* The option is always available */
77 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
78 #define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
79 #define CONDSPLASSERT(cond, level, msg) do { \
81 SPLASSERT(level, msg); \
84 #define KASSERT(exp,msg)
85 #define SPLASSERT(level, msg)
86 #define CONDSPLASSERT(cond, level, msg)
90 * General function declarations.
100 void Debugger __P((const char *msg));
101 int nullop __P((void));
102 int eopnotsupp __P((void));
103 int einval __P((void));
104 int seltrue __P((dev_t dev, int which, struct proc *p));
105 int ureadc __P((int, struct uio *));
106 void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask));
107 void *phashinit __P((int count, struct malloc_type *type, u_long *nentries));
109 void cpu_boot __P((int));
110 void cpu_rootconf __P((void));
111 void tablefull __P((const char *));
112 int addlog __P((const char *, ...)) __printflike(1, 2);
113 int kvprintf __P((char const *, void (*)(int, void*), void *, int,
114 _BSD_VA_LIST_)) __printflike(1, 0);
115 int log __P((int, const char *, ...)) __printflike(2, 3);
116 void logwakeup __P((void));
117 int printf __P((const char *, ...)) __printflike(1, 2);
118 int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
119 int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3);
120 int uprintf __P((const char *, ...)) __printflike(1, 2);
121 int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0);
122 int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0);
123 int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0);
124 int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3);
125 int sscanf __P((const char *, char const *, ...));
126 int vsscanf __P((const char *, char const *, _BSD_VA_LIST_));
127 long strtol __P((const char *, char **, int));
128 u_long strtoul __P((const char *, char **, int));
129 quad_t strtoq __P((const char *, char **, int));
130 u_quad_t strtouq __P((const char *, char **, int));
132 void bcopy __P((const void *from, void *to, size_t len));
133 void ovbcopy __P((const void *from, void *to, size_t len));
136 extern void (*bzero) __P((void *buf, size_t len));
138 void bzero __P((void *buf, size_t len));
141 void *memcpy __P((void *to, const void *from, size_t len));
143 int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
145 int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
147 int copyin __P((const void *udaddr, void *kaddr, size_t len));
148 int copyout __P((const void *kaddr, void *udaddr, size_t len));
150 int fubyte __P((const void *base));
151 int subyte __P((void *base, int byte));
152 int suibyte __P((void *base, int byte));
153 long fuword __P((const void *base));
154 int suword __P((void *base, long word));
155 int fusword __P((void *base));
156 int susword __P((void *base, int word));
158 void realitexpire __P((void *));
160 void hardclock __P((struct clockframe *frame));
161 void softclock __P((void));
162 void statclock __P((struct clockframe *frame));
164 void startprofclock __P((struct proc *));
165 void stopprofclock __P((struct proc *));
166 void setstatclockrate __P((int hzrate));
168 char *getenv __P((char *name));
169 int getenv_int __P((char *name, int *data));
170 quad_t getenv_quad __P((char *name, quad_t *data));
171 extern char *kern_envp;
173 #ifdef APM_FIXUP_CALLTODO
174 void adjust_timeout_calltodo __P((struct timeval *time_change));
175 #endif /* APM_FIXUP_CALLTODO */
177 #include <sys/libkern.h>
179 /* Initialize the world */
180 void consinit __P((void));
181 void cpu_initclocks __P((void));
182 void nchinit __P((void));
183 void usrinfoinit __P((void));
184 void vntblinit __P((void));
186 /* Finalize the world. */
187 void shutdown_nice __P((int));
190 * Kernel to clock driver interface.
192 void inittodr __P((time_t base));
193 void resettodr __P((void));
194 void startrtclock __P((void));
197 typedef void timeout_t __P((void *)); /* timeout function type */
198 #define CALLOUT_HANDLE_INITIALIZER(handle) \
201 void callout_handle_init __P((struct callout_handle *));
202 struct callout_handle timeout __P((timeout_t *, void *, int));
203 void untimeout __P((timeout_t *, void *, struct callout_handle));
205 /* Interrupt management */
208 * For the alpha arch, some of these functions are static __inline, and
209 * the others should be.
212 void setdelayed __P((void));
213 void setsoftast __P((void));
214 void setsoftcambio __P((void));
215 void setsoftcamnet __P((void));
216 void setsoftclock __P((void));
217 void setsoftnet __P((void));
218 void setsofttty __P((void));
219 void setsoftvm __P((void));
220 void setsofttq __P((void));
221 void schedsoftcamnet __P((void));
222 void schedsoftcambio __P((void));
223 void schedsoftnet __P((void));
224 void schedsofttty __P((void));
225 void schedsoftvm __P((void));
226 void schedsofttq __P((void));
227 intrmask_t softclockpending __P((void));
228 void spl0 __P((void));
229 intrmask_t splbio __P((void));
230 intrmask_t splcam __P((void));
231 intrmask_t splclock __P((void));
232 intrmask_t splhigh __P((void));
233 intrmask_t splimp __P((void));
234 intrmask_t splnet __P((void));
235 intrmask_t splsoftcam __P((void));
236 intrmask_t splsoftcambio __P((void));
237 intrmask_t splsoftcamnet __P((void));
238 intrmask_t splsoftclock __P((void));
239 intrmask_t splsofttty __P((void));
240 intrmask_t splsoftvm __P((void));
241 intrmask_t splsofttq __P((void));
242 intrmask_t splstatclock __P((void));
243 intrmask_t spltty __P((void));
244 intrmask_t splvm __P((void));
245 void splx __P((intrmask_t ipl));
246 void splz __P((void));
247 #endif /* __i386__ */
250 #include <machine/ipl.h>
253 #ifdef INVARIANT_SUPPORT
254 void splbioassert __P((const char *msg));
255 void splcamassert __P((const char *msg));
256 void splclockassert __P((const char *msg));
257 void splhighassert __P((const char *msg));
258 void splimpassert __P((const char *msg));
259 void splnetassert __P((const char *msg));
260 void splsoftcamassert __P((const char *msg));
261 void splsoftcambioassert __P((const char *msg));
262 void splsoftcamnetassert __P((const char *msg));
263 void splsoftclockassert __P((const char *msg));
264 void splsoftttyassert __P((const char *msg));
265 void splsoftvmassert __P((const char *msg));
266 void splsofttqassert __P((const char *msg));
267 void splstatclockassert __P((const char *msg));
268 void splttyassert __P((const char *msg));
269 void splvmassert __P((const char *msg));
270 #endif /* INVARIANT_SUPPORT */
273 * XXX It's not clear how "machine independent" these will be yet, but
274 * they are used all over the place especially in pci drivers. We would
275 * have to modify lots of drivers since <machine/cpufunc.h> no longer
276 * implicitly causes these to be defined when it #included <machine/spl.h>
278 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
279 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
280 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
281 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
282 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
285 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
286 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
287 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
290 * Various callout lists.
293 /* Exit callout list declarations. */
294 typedef void (*exitlist_fn) __P((struct proc *procp));
296 int at_exit __P((exitlist_fn function));
297 int rm_at_exit __P((exitlist_fn function));
299 /* Fork callout list declarations. */
300 typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child,
303 int at_fork __P((forklist_fn function));
304 int rm_at_fork __P((forklist_fn function));
307 * Not exactly a callout LIST, but a callout entry.
308 * Allow an external module to define a hardware watchdog tickler.
309 * Normally a process would do this, but there are times when the
310 * kernel needs to be able to hold off the watchdog, when the process
311 * is not active, e.g., when dumping core.
313 typedef void (*watchdog_tickle_fn) __P((void));
315 extern watchdog_tickle_fn wdog_tickler;
318 * Common `proc' functions are declared here so that proc.h can be included
321 int tsleep __P((void *chan, int pri, const char *wmesg, int timo));
322 int asleep __P((void *chan, int pri, const char *wmesg, int timo));
323 int await __P((int pri, int timo));
324 void wakeup __P((void *chan));
325 void wakeup_one __P((void *chan));
328 * Common `dev_t' stuff are declared here to avoid #include poisoning
333 dev_t makedev(int x, int y);
334 udev_t dev2udev(dev_t x);
335 dev_t udev2dev(udev_t x, int b);
336 int uminor(udev_t dev);
337 int umajor(udev_t dev);
338 udev_t makeudev(int x, int y);
339 #endif /* !_SYS_SYSTM_H_ */