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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 1.58 2007/01/05 22:16:32 dillon 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.
129 void Debugger (const char *msg);
130 void backtrace(void);
131 void mi_gdinit (struct globaldata *gd, int cpu);
132 void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
133 int dumpstatus (vm_offset_t addr, off_t count);
135 int seltrue (cdev_t dev, int which);
136 int ureadc (int, struct uio *);
137 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
138 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
140 int cpu_sanitize_frame (struct trapframe *);
141 void cpu_halt (void);
142 void cpu_reset (void);
144 void cpu_rootconf (void);
146 vm_paddr_t kvtop(void *addr);
147 int is_physical_memory (vm_offset_t addr);
149 extern uint32_t crc32_tab[];
150 uint32_t crc32(const void *buf, size_t size);
151 void init_param1 (void);
152 void init_param2 (int physpages);
153 void tablefull (const char *);
154 int kvcprintf (char const *, void (*)(int, void*), void *, int,
155 __va_list) __printflike(1, 0);
156 int log (int, const char *, ...) __printflike(2, 3);
157 void logwakeup (void);
158 void log_console (struct uio *);
159 int kprintf (const char *, ...) __printflike(1, 2);
160 int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
161 int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
162 int uprintf (const char *, ...) __printflike(1, 2);
163 int kvprintf (const char *, __va_list) __printflike(1, 0);
164 int kvsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
165 int kvsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
166 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
167 int ksscanf (const char *, char const *, ...);
168 int kvsscanf (const char *, char const *, __va_list);
170 long strtol (const char *, char **, int);
171 u_long strtoul (const char *, char **, int);
172 quad_t strtoq (const char *, char **, int);
173 u_quad_t strtouq (const char *, char **, int);
176 * note: some functions commonly used by device drivers may be passed
177 * pointers to volatile storage, volatile set to avoid warnings.
179 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
180 * explicitly not meant to be sophisticated.
181 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
182 * This routine is explicitly not meant to be sophisticated.
184 void bcopyb (const void *from, void *to, size_t len);
185 void bcopyi (const void *from, void *to, size_t len);
186 void bcopy (volatile const void *from, volatile void *to, size_t len);
187 void ovbcopy (const void *from, void *to, size_t len);
188 void bzero (volatile void *buf, size_t len);
189 void *memcpy (void *to, const void *from, size_t len);
191 int copystr (const void *kfaddr, void *kdaddr, size_t len,
193 int copyinstr (const void *udaddr, void *kaddr, size_t len,
195 int copyin (const void *udaddr, void *kaddr, size_t len);
196 int copyout (const void *kaddr, void *udaddr, size_t len);
198 int fubyte (const void *base);
199 int subyte (void *base, int byte);
200 long fuword (const void *base);
201 int suword (void *base, long word);
202 int fusword (void *base);
203 int susword (void *base, int word);
205 void realitexpire (void *);
206 void DELAY(int usec);
208 void startprofclock (struct proc *);
209 void stopprofclock (struct proc *);
210 void setstatclockrate (int hzrate);
213 * Console I/O spinlocks - these typically also hard-disable interrupts
216 void cons_lock(void);
217 void cons_unlock(void);
219 char *kgetenv (const char *name);
220 #define testenv kgetenv
222 int kgetenv_int (const char *name, int *data);
223 int kgetenv_string (const char *name, char *data, int size);
224 int kgetenv_quad (const char *name, quad_t *data);
225 extern char *kern_envp;
227 #ifdef APM_FIXUP_CALLTODO
228 void adjust_timeout_calltodo (struct timeval *time_change);
229 #endif /* APM_FIXUP_CALLTODO */
231 #include <sys/libkern.h>
233 /* Initialize the world */
234 void mi_startup (void);
235 void consinit (void);
236 void cpu_initclocks (void);
238 void usrinfoinit (void);
240 /* Finalize the world. */
241 void shutdown_nice (int);
244 * Kernel to clock driver interface.
246 void inittodr (time_t base);
247 void resettodr (void);
248 void startrtclock (void);
251 typedef void timeout_t (void *); /* timeout function type */
252 #define CALLOUT_HANDLE_INITIALIZER(handle) \
256 /* OBSOLETE INTERFACE */
257 void callout_handle_init (struct callout_handle *);
258 struct callout_handle timeout (timeout_t *, void *, int);
259 void untimeout (timeout_t *, void *, struct callout_handle);
262 /* Interrupt management */
265 * For the alpha arch, some of these functions are static __inline, and
266 * the others should be.
269 void setdelayed (void);
270 void setsoftast (void);
271 void setsoftcambio (void);
272 void setsoftcamnet (void);
273 void setsoftclock (void);
274 void setsoftcrypto (void);
275 void setsoftnet (void);
276 void setsofttty (void);
277 void setsoftvm (void);
278 void setsofttq (void);
279 void schedsoftcamnet (void);
280 void schedsoftcambio (void);
281 void schedsoftnet (void);
282 void schedsofttty (void);
283 void schedsoftvm (void);
284 void schedsofttq (void);
285 intrmask_t softclockpending (void);
287 #endif /* __i386__ */
290 * Various callout lists.
293 /* Exit callout list declarations. */
294 typedef void (*exitlist_fn) (struct thread *td);
296 int at_exit (exitlist_fn function);
297 int rm_at_exit (exitlist_fn function);
299 /* Fork callout list declarations. */
300 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
303 int at_fork (forklist_fn function);
304 int rm_at_fork (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) (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 (void *, int, const char *, int);
322 int msleep (void *, struct spinlock *, int, const char *, int);
323 void tsleep_interlock (void *chan);
324 void tstop (struct proc *);
325 void wakeup (void *chan);
326 void wakeup_one (void *chan);
327 void wakeup_mycpu (void *chan);
328 void wakeup_mycpu_one (void *chan);
329 void wakeup_oncpu (struct globaldata *gd, void *chan);
330 void wakeup_oncpu_one (struct globaldata *gd, void *chan);
331 void wakeup_domain (void *chan, int domain);
332 void wakeup_domain_one (void *chan, int domain);
335 * Common `cdev_t' stuff are declared here to avoid #include poisoning
340 udev_t dev2udev(cdev_t x);
341 cdev_t udev2dev(udev_t x, int b);
342 int uminor(udev_t dev);
343 int umajor(udev_t dev);
344 udev_t makeudev(int x, int y);
347 #endif /* !_SYS_SYSTM_H_ */