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.
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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
39 * $FreeBSD: src/sys/sys/systm.h,v 1.111.2.18 2002/12/17 18:04:02 sam Exp $
46 #error "This file should not be included by userland programs."
49 #ifndef _MACHINE_TYPES_H_
50 #include <machine/types.h>
52 #include <machine/stdarg.h>
53 #include <machine/atomic.h>
54 #include <machine/cpufunc.h>
55 #include <sys/callout.h>
57 extern int securelevel; /* system security level (see init(8)) */
58 extern int kernel_mem_readonly; /* disable writes to kernel memory */
60 extern int cold; /* nonzero if we are doing a cold boot */
61 extern int tsleep_now_works; /* tsleep won't just return any more */
62 extern const char *panicstr; /* panic message */
63 extern int dumping; /* system is dumping */
64 extern int safepri; /* safe ipl when cold or panicing */
65 extern char version[]; /* system version */
66 extern char copyright[]; /* system copyright */
68 extern int selwait; /* select timeout address */
70 extern u_char curpriority; /* priority of current process */
72 extern long physmem; /* physical memory */
74 extern cdev_t dumpdev; /* dump device */
75 extern u_int64_t dumplo64; /* block number into dumpdev, start of dump */
77 extern cdev_t rootdev; /* root device */
78 extern cdev_t rootdevs[2]; /* possible root devices */
79 extern char *rootdevnames[2]; /* names of possible root devices */
80 extern char *ZeroPage;
82 extern int boothowto; /* reboot flags, from console subsystem */
83 extern int bootverbose; /* nonzero to print verbose messages */
85 extern int maxusers; /* system tune hint */
87 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
88 extern int ncpus2; /* ncpus rounded down to power of 2 */
89 extern int ncpus2_shift; /* log base 2 of ncpus2 */
90 extern int ncpus2_mask; /* ncpus2 - 1 */
91 extern int ncpus_fit; /* round up to a power of 2 */
92 extern int ncpus_fit_mask; /* ncpus_fit - 1 */
93 extern int clocks_running; /* timing/timeout subsystem is operational */
95 /* XXX TGEN these don't belong here, they're MD on i386/x86_64 */
96 extern u_int cpu_feature; /* CPUID_* features */
97 extern u_int cpu_feature2; /* CPUID2_* features */
98 extern u_int cpu_mi_feature; /* CPU_MI_XXX machine-nonspecific features */
99 extern cpumask_t usched_global_cpumask;
101 extern int nfs_diskless_valid; /* NFS diskless params were obtained */
102 extern vm_paddr_t Maxmem; /* Highest physical memory address in system */
104 #ifdef INVARIANTS /* The option is always available */
105 #define KASSERT(exp,msg) do { if (__predict_false(!(exp))) \
106 panic msg; } while (0)
107 #define KKASSERT(exp) do { if (__predict_false(!(exp))) \
108 panic("assertion: %s in %s", \
109 #exp, __func__); } while (0)
112 #define KASSERT(exp,msg)
113 #define KKASSERT(exp)
114 #define __debugvar __attribute__((__unused__))
117 #define CTASSERT(x) _CTASSERT(x, __LINE__)
118 #define _CTASSERT(x, y) __CTASSERT(x, y)
119 #define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
122 * General function declarations.
129 struct lwkt_serialize;
144 void Debugger (const char *msg);
145 void print_backtrace(int count);
146 void mi_gdinit (struct globaldata *gd, int cpu);
147 void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
149 int seltrue (cdev_t dev, int which);
150 int ureadc (int, struct uio *);
151 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
152 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
153 void *hashinit_ext (int count, size_t size,
154 struct malloc_type *type, u_long *hashmask);
155 void *phashinit_ext (int count, size_t size,
156 struct malloc_type *type, u_long *nentries);
158 int cpu_sanitize_frame (struct trapframe *);
159 int cpu_sanitize_tls (struct savetls *);
160 void cpu_spinlock_contested(void);
161 void cpu_halt (void);
162 void cpu_reset (void);
164 void cpu_rootconf (void);
165 void cpu_vmspace_alloc(struct vmspace *);
166 void cpu_vmspace_free(struct vmspace *);
167 void cpu_vkernel_trap(struct trapframe *, int);
168 void set_user_TLS(void);
169 void set_vkernel_fp(struct trapframe *);
170 int kvm_access_check(vm_offset_t, vm_offset_t, int);
172 vm_paddr_t kvtop(void *addr);
173 int is_physical_memory (vm_offset_t addr);
175 extern uint32_t crc32_tab[];
176 uint32_t crc32(const void *buf, size_t size);
177 uint32_t crc32_ext(const void *buf, size_t size, uint32_t ocrc);
178 void init_param1 (void);
179 void init_param2 (int physpages);
180 void tablefull (const char *);
181 int kvcprintf (char const *, void (*)(int, void*), void *, int,
182 __va_list) __printflike(1, 0);
183 void kvcreinitspin(void);
184 int log (int, const char *, ...) __printflike(2, 3);
185 void logwakeup (void);
186 void log_console (struct uio *);
187 int kprintf (const char *, ...) __printflike(1, 2);
188 void kprintf0 (const char *, ...) __printflike(1, 2);
189 void krateprintf (struct krate *, const char *, ...) __printflike(2, 3);
190 int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
191 int ksnrprintf (char *, size_t, int, const char *, ...) __printflike(4, 5);
192 int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
193 int uprintf (const char *, ...) __printflike(1, 2);
194 int kvprintf (const char *, __va_list) __printflike(1, 0);
195 int kvsnprintf (char *, size_t, const char *,
196 __va_list) __printflike(3, 0);
197 int kvsnrprintf (char *, size_t, int, const char *,
198 __va_list) __printflike(4, 0);
199 int kvasnrprintf (char **, size_t, int, const char *,
200 __va_list) __printflike(4, 0);
201 int kvsprintf (char *buf, const char *,
202 __va_list) __printflike(2, 0);
203 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
204 void hexdump (const void *ptr, int length, const char *hdr, int flags);
205 #define HD_COLUMN_MASK 0xff
206 #define HD_DELIM_MASK 0xff00
207 #define HD_OMIT_COUNT (1 << 16)
208 #define HD_OMIT_HEX (1 << 17)
209 #define HD_OMIT_CHARS (1 << 18)
210 int ksscanf (const char *, char const *, ...) __scanflike(2, 3);
211 int kvsscanf (const char *, char const *, __va_list) __scanflike(2, 0);
212 void kvasfree(char **);
214 long strtol (const char *, char **, int);
215 u_long strtoul (const char *, char **, int);
216 quad_t strtoq (const char *, char **, int);
217 u_quad_t strtouq (const char *, char **, int);
220 * note: some functions commonly used by device drivers may be passed
221 * pointers to volatile storage, volatile set to avoid warnings.
223 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
224 * explicitly not meant to be sophisticated.
225 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
226 * This routine is explicitly not meant to be sophisticated.
228 void bcopyb (const void *from, void *to, size_t len);
229 void bcopyi (const void *from, void *to, size_t len);
230 void bcopy (volatile const void *from, volatile void *to, size_t len);
231 void ovbcopy (const void *from, void *to, size_t len);
232 void bzero (volatile void *buf, size_t len);
233 void bzeront (volatile void *buf, size_t len);
234 void *memcpy (void *to, const void *from, size_t len);
236 int copystr (const void *kfaddr, void *kdaddr, size_t len,
238 int copyinstr (const void *udaddr, void *kaddr, size_t len,
240 int copyin (const void *udaddr, void *kaddr, size_t len);
241 int copyout (const void *kaddr, void *udaddr, size_t len);
243 int fubyte (const void *base);
244 int subyte (void *base, int byte);
245 long fuword (const void *base);
246 int suword (void *base, long word);
247 int fusword (void *base);
248 int susword (void *base, int word);
249 u_long casuword(volatile u_long *p, u_long oldval, u_long newval);
251 void realitexpire (void *);
252 void DELAY(int usec);
253 void DRIVERSLEEP(int usec);
255 void startprofclock (struct proc *);
256 void stopprofclock (struct proc *);
257 void setstatclockrate (int hzrate);
260 * Kernel environment support functions and sundry.
262 char *kgetenv (const char *name);
263 int ksetenv(const char *name, const char *value);
264 int kunsetenv(const char *name);
265 void kfreeenv(char *env);
266 int ktestenv(const char *name);
267 int kgetenv_int (const char *name, int *data);
268 int kgetenv_string (const char *name, char *data, int size);
269 int kgetenv_ulong(const char *name, unsigned long *data);
270 int kgetenv_quad (const char *name, quad_t *data);
271 int kgetenv_long(const char *name, long *data);
272 extern char *kern_envp;
274 #ifdef APM_FIXUP_CALLTODO
275 void adjust_timeout_calltodo (struct timeval *time_change);
276 #endif /* APM_FIXUP_CALLTODO */
278 #include <sys/libkern.h>
280 /* Initialize the world */
281 void mi_startup (void);
284 /* Finalize the world. */
285 void shutdown_nice (int);
288 * Kernel to clock driver interface.
290 void inittodr (time_t base);
291 void resettodr (void);
292 void startrtclock (void);
295 typedef void timeout_t (void *); /* timeout function type */
297 /* Interrupt management */
300 * For the alpha arch, some of these functions are static __inline, and
301 * the others should be.
303 #if defined(__i386__) || defined(__x86_64__)
304 void setdelayed (void);
305 void setsoftcambio (void);
306 void setsoftcamnet (void);
307 void setsoftunused02 (void);
308 void setsoftcrypto (void);
309 void setsoftunused01 (void);
310 void setsofttty (void);
311 void setsoftvm (void);
312 void setsofttq (void);
313 void schedsofttty (void);
315 void splz_check (void);
316 void cpu_mmw_pause_int(int*, int);
317 void cpu_mmw_pause_long(long*, long);
318 #endif /* __i386__ */
321 * Various callout lists.
324 /* Exit callout list declarations. */
325 typedef void (*exitlist_fn) (struct thread *td);
327 int at_exit (exitlist_fn function);
328 int rm_at_exit (exitlist_fn function);
330 /* Fork callout list declarations. */
331 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
334 int at_fork (forklist_fn function);
335 int rm_at_fork (forklist_fn function);
338 * Not exactly a callout LIST, but a callout entry.
339 * Allow an external module to define a hardware watchdog tickler.
340 * Normally a process would do this, but there are times when the
341 * kernel needs to be able to hold off the watchdog, when the process
342 * is not active, e.g., when dumping core.
344 typedef void (*watchdog_tickle_fn) (void);
346 extern watchdog_tickle_fn wdog_tickler;
347 extern struct globaldata *panic_cpu_gd;
350 * Common `proc' functions are declared here so that proc.h can be included
353 int tsleep (const volatile void *, int, const char *, int);
354 int ssleep (const volatile void *, struct spinlock *, int, const char *, int);
355 int lksleep (const volatile void *, struct lock *, int, const char *, int);
356 int mtxsleep (const volatile void *, struct mtx *, int, const char *, int);
357 int zsleep(const volatile void *, struct lwkt_serialize *, int, const char *, int);
358 void tsleep_interlock (const volatile void *, int);
359 void tsleep_remove (struct thread *);
360 int lwkt_sleep (const char *, int);
362 void wakeup (const volatile void *chan);
363 void wakeup_one (const volatile void *chan);
364 void wakeup_mycpu (const volatile void *chan);
365 void wakeup_mycpu_one (const volatile void *chan);
366 void wakeup_oncpu (struct globaldata *gd, const volatile void *chan);
367 void wakeup_oncpu_one (struct globaldata *gd, const volatile void *chan);
368 void wakeup_domain (const volatile void *chan, int domain);
369 void wakeup_domain_one (const volatile void *chan, int domain);
372 * Common `cdev_t' stuff are declared here to avoid #include poisoning
377 udev_t dev2udev(cdev_t x);
378 cdev_t udev2dev(udev_t x, int b);
379 int uminor(udev_t dev);
380 int umajor(udev_t dev);
381 udev_t makeudev(int x, int y);
384 #endif /* !_SYS_SYSTM_H_ */