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
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8 * the permission of UNIX System Laboratories, Inc.
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20 * This product includes software developed by the University of
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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 1.64 2007/01/13 21:33:30 tgen Exp $
47 #error "This file should not be included by userland programs."
50 #ifndef _MACHINE_TYPES_H_
51 #include <machine/types.h>
53 #ifndef _MACHINE_STDARG_H_
54 #include <machine/stdarg.h>
56 #include <machine/atomic.h>
57 #include <machine/cpufunc.h>
58 #include <sys/callout.h>
60 extern int securelevel; /* system security level (see init(8)) */
62 extern int cold; /* nonzero if we are doing a cold boot */
63 extern const char *panicstr; /* panic message */
64 extern int dumping; /* system is dumping */
65 extern int safepri; /* safe ipl when cold or panicing */
66 extern char version[]; /* system version */
67 extern char copyright[]; /* system copyright */
69 extern int selwait; /* select timeout address */
71 extern u_char curpriority; /* priority of current process */
73 extern int physmem; /* physical memory */
75 extern cdev_t dumpdev; /* dump device */
76 extern long dumplo; /* offset into dumpdev */
78 extern cdev_t rootdev; /* root device */
79 extern cdev_t rootdevs[2]; /* possible root devices */
80 extern char *rootdevnames[2]; /* names of possible root devices */
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 clocks_running; /* timing/timeout subsystem is operational */
93 /* XXX TGEN these don't belong here, they're MD on i386/amd64 */
94 extern u_int cpu_feature; /* CPUID_* features */
95 extern u_int cpu_feature2; /* CPUID2_* features */
97 extern int nfs_diskless_valid; /* NFS diskless params were obtained */
98 extern vm_paddr_t Maxmem; /* Highest physical memory address in system */
100 #ifdef INVARIANTS /* The option is always available */
101 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
102 #define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
104 #define KASSERT(exp,msg)
105 #define KKASSERT(exp)
108 #define CTASSERT(x) _CTASSERT(x, __LINE__)
109 #define _CTASSERT(x, y) __CTASSERT(x, y)
110 #define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
113 * General function declarations.
131 void Debugger (const char *msg);
132 void backtrace(void);
133 void mi_gdinit (struct globaldata *gd, int cpu);
134 void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
135 int dumpstatus (vm_offset_t addr, off_t count);
137 int seltrue (cdev_t dev, int which);
138 int ureadc (int, struct uio *);
139 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
140 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
142 int cpu_sanitize_frame (struct trapframe *);
143 int cpu_sanitize_tls (struct savetls *);
144 void cpu_halt (void);
145 void cpu_reset (void);
147 void cpu_rootconf (void);
148 void cpu_vmspace_alloc(struct vmspace *);
149 void cpu_vmspace_free(struct vmspace *);
150 void set_user_TLS(void);
151 void set_vkernel_fp(struct trapframe *);
152 int kvm_access_check(vm_offset_t, vm_offset_t, int);
154 vm_paddr_t kvtop(void *addr);
155 int is_physical_memory (vm_offset_t addr);
157 extern uint32_t crc32_tab[];
158 uint32_t crc32(const void *buf, size_t size);
159 void init_param1 (void);
160 void init_param2 (int physpages);
161 void tablefull (const char *);
162 int kvcprintf (char const *, void (*)(int, void*), void *, int,
163 __va_list) __printflike(1, 0);
164 int log (int, const char *, ...) __printflike(2, 3);
165 void logwakeup (void);
166 void log_console (struct uio *);
167 int kprintf (const char *, ...) __printflike(1, 2);
168 int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
169 int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
170 int uprintf (const char *, ...) __printflike(1, 2);
171 int kvprintf (const char *, __va_list) __printflike(1, 0);
172 int kvsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
173 int kvsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
174 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
175 int ksscanf (const char *, char const *, ...);
176 int kvsscanf (const char *, char const *, __va_list);
178 long strtol (const char *, char **, int);
179 u_long strtoul (const char *, char **, int);
180 quad_t strtoq (const char *, char **, int);
181 u_quad_t strtouq (const char *, char **, int);
184 * note: some functions commonly used by device drivers may be passed
185 * pointers to volatile storage, volatile set to avoid warnings.
187 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
188 * explicitly not meant to be sophisticated.
189 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
190 * This routine is explicitly not meant to be sophisticated.
192 void bcopyb (const void *from, void *to, size_t len);
193 void bcopyi (const void *from, void *to, size_t len);
194 void bcopy (volatile const void *from, volatile void *to, size_t len);
195 void ovbcopy (const void *from, void *to, size_t len);
196 void bzero (volatile void *buf, size_t len);
197 void *memcpy (void *to, const void *from, size_t len);
199 int copystr (const void *kfaddr, void *kdaddr, size_t len,
201 int copyinstr (const void *udaddr, void *kaddr, size_t len,
203 int copyin (const void *udaddr, void *kaddr, size_t len);
204 int copyout (const void *kaddr, void *udaddr, size_t len);
206 int fubyte (const void *base);
207 int subyte (void *base, int byte);
208 long fuword (const void *base);
209 int suword (void *base, long word);
210 int fusword (void *base);
211 int susword (void *base, int word);
213 void realitexpire (void *);
214 void DELAY(int usec);
216 void startprofclock (struct proc *);
217 void stopprofclock (struct proc *);
218 void setstatclockrate (int hzrate);
221 * Console I/O spinlocks - these typically also hard-disable interrupts
224 void cons_lock(void);
225 void cons_unlock(void);
228 * Kernel environment support functions and sundry.
230 char *kgetenv (const char *name);
231 int ksetenv(const char *name, const char *value);
232 int kunsetenv(const char *name);
233 void kfreeenv(char *env);
234 int ktestenv(const char *name);
235 /* XXX TGEN Get rid of these compat defines. */
236 #define testenv ktestenv
237 #define freeenv kfreeenv
238 int kgetenv_int (const char *name, int *data);
239 int kgetenv_string (const char *name, char *data, int size);
240 int kgetenv_quad (const char *name, quad_t *data);
241 extern char *kern_envp;
243 #ifdef APM_FIXUP_CALLTODO
244 void adjust_timeout_calltodo (struct timeval *time_change);
245 #endif /* APM_FIXUP_CALLTODO */
247 #include <sys/libkern.h>
249 /* Initialize the world */
250 void mi_startup (void);
251 void consinit (void);
252 void cpu_initclocks (void);
254 void usrinfoinit (void);
256 /* Finalize the world. */
257 void shutdown_nice (int);
260 * Kernel to clock driver interface.
262 void inittodr (time_t base);
263 void resettodr (void);
264 void startrtclock (void);
267 typedef void timeout_t (void *); /* timeout function type */
268 #define CALLOUT_HANDLE_INITIALIZER(handle) \
272 /* OBSOLETE INTERFACE */
273 void callout_handle_init (struct callout_handle *);
274 struct callout_handle timeout (timeout_t *, void *, int);
275 void untimeout (timeout_t *, void *, struct callout_handle);
278 /* Interrupt management */
281 * For the alpha arch, some of these functions are static __inline, and
282 * the others should be.
285 void setdelayed (void);
286 void setsoftcambio (void);
287 void setsoftcamnet (void);
288 void setsoftunused02 (void);
289 void setsoftcrypto (void);
290 void setsoftunused01 (void);
291 void setsofttty (void);
292 void setsoftvm (void);
293 void setsofttq (void);
294 void schedsofttty (void);
296 #endif /* __i386__ */
299 * Various callout lists.
302 /* Exit callout list declarations. */
303 typedef void (*exitlist_fn) (struct thread *td);
305 int at_exit (exitlist_fn function);
306 int rm_at_exit (exitlist_fn function);
308 /* Fork callout list declarations. */
309 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
312 int at_fork (forklist_fn function);
313 int rm_at_fork (forklist_fn function);
316 * Not exactly a callout LIST, but a callout entry.
317 * Allow an external module to define a hardware watchdog tickler.
318 * Normally a process would do this, but there are times when the
319 * kernel needs to be able to hold off the watchdog, when the process
320 * is not active, e.g., when dumping core.
322 typedef void (*watchdog_tickle_fn) (void);
324 extern watchdog_tickle_fn wdog_tickler;
327 * Common `proc' functions are declared here so that proc.h can be included
330 int tsleep (void *, int, const char *, int);
331 int msleep (void *, struct spinlock *, int, const char *, int);
332 void tsleep_interlock (void *chan);
333 void tstop (struct proc *);
334 void wakeup (void *chan);
335 void wakeup_one (void *chan);
336 void wakeup_mycpu (void *chan);
337 void wakeup_mycpu_one (void *chan);
338 void wakeup_oncpu (struct globaldata *gd, void *chan);
339 void wakeup_oncpu_one (struct globaldata *gd, void *chan);
340 void wakeup_domain (void *chan, int domain);
341 void wakeup_domain_one (void *chan, int domain);
344 * Common `cdev_t' stuff are declared here to avoid #include poisoning
349 udev_t dev2udev(cdev_t x);
350 cdev_t udev2dev(udev_t x, int b);
351 int uminor(udev_t dev);
352 int umajor(udev_t dev);
353 udev_t makeudev(int x, int y);
356 #endif /* !_SYS_SYSTM_H_ */