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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 1.68 2007/04/30 07:18:56 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)) */
61 extern int kernel_mem_readonly; /* disable writes to kernel memory */
63 extern int cold; /* nonzero if we are doing a cold boot */
64 extern const char *panicstr; /* panic message */
65 extern int dumping; /* system is dumping */
66 extern int safepri; /* safe ipl when cold or panicing */
67 extern char version[]; /* system version */
68 extern char copyright[]; /* system copyright */
70 extern int selwait; /* select timeout address */
72 extern u_char curpriority; /* priority of current process */
74 extern int physmem; /* physical memory */
76 extern cdev_t dumpdev; /* dump device */
77 extern long dumplo; /* offset into dumpdev */
79 extern cdev_t rootdev; /* root device */
80 extern cdev_t rootdevs[2]; /* possible root devices */
81 extern char *rootdevnames[2]; /* names of possible root devices */
83 extern int boothowto; /* reboot flags, from console subsystem */
84 extern int bootverbose; /* nonzero to print verbose messages */
86 extern int maxusers; /* system tune hint */
88 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
89 extern int ncpus2; /* ncpus rounded down to power of 2 */
90 extern int ncpus2_shift; /* log base 2 of ncpus2 */
91 extern int ncpus2_mask; /* ncpus2 - 1 */
92 extern int ncpus_fit; /* round up to a power of 2 */
93 extern int ncpus_fit_mask; /* ncpus_fit - 1 */
94 extern int clocks_running; /* timing/timeout subsystem is operational */
96 /* XXX TGEN these don't belong here, they're MD on i386/amd64 */
97 extern u_int cpu_feature; /* CPUID_* features */
98 extern u_int cpu_feature2; /* CPUID2_* features */
100 extern int nfs_diskless_valid; /* NFS diskless params were obtained */
101 extern vm_paddr_t Maxmem; /* Highest physical memory address in system */
103 #ifdef INVARIANTS /* The option is always available */
104 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
105 #define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
107 #define KASSERT(exp,msg)
108 #define KKASSERT(exp)
111 #define CTASSERT(x) _CTASSERT(x, __LINE__)
112 #define _CTASSERT(x, y) __CTASSERT(x, y)
113 #define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
116 * General function declarations.
134 void Debugger (const char *msg);
135 void backtrace(void);
136 void mi_gdinit (struct globaldata *gd, int cpu);
137 void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
138 int dumpstatus (vm_offset_t addr, off_t count);
140 int seltrue (cdev_t dev, int which);
141 int ureadc (int, struct uio *);
142 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
143 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
145 int cpu_sanitize_frame (struct trapframe *);
146 int cpu_sanitize_tls (struct savetls *);
147 void cpu_halt (void);
148 void cpu_reset (void);
150 void cpu_rootconf (void);
151 void cpu_vmspace_alloc(struct vmspace *);
152 void cpu_vmspace_free(struct vmspace *);
153 void set_user_TLS(void);
154 void set_vkernel_fp(struct trapframe *);
155 int kvm_access_check(vm_offset_t, vm_offset_t, int);
157 vm_paddr_t kvtop(void *addr);
158 int is_physical_memory (vm_offset_t addr);
160 extern uint32_t crc32_tab[];
161 uint32_t crc32(const void *buf, size_t size);
162 void init_param1 (void);
163 void init_param2 (int physpages);
164 void tablefull (const char *);
165 int kvcprintf (char const *, void (*)(int, void*), void *, int,
166 __va_list) __printflike(1, 0);
167 int log (int, const char *, ...) __printflike(2, 3);
168 void logwakeup (void);
169 void log_console (struct uio *);
170 int kprintf (const char *, ...) __printflike(1, 2);
171 int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
172 int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
173 int uprintf (const char *, ...) __printflike(1, 2);
174 int kvprintf (const char *, __va_list) __printflike(1, 0);
175 int kvsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
176 int kvsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
177 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
178 int ksscanf (const char *, char const *, ...);
179 int kvsscanf (const char *, char const *, __va_list);
181 long strtol (const char *, char **, int);
182 u_long strtoul (const char *, char **, int);
183 quad_t strtoq (const char *, char **, int);
184 u_quad_t strtouq (const char *, char **, int);
187 * note: some functions commonly used by device drivers may be passed
188 * pointers to volatile storage, volatile set to avoid warnings.
190 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
191 * explicitly not meant to be sophisticated.
192 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
193 * This routine is explicitly not meant to be sophisticated.
195 void bcopyb (const void *from, void *to, size_t len);
196 void bcopyi (const void *from, void *to, size_t len);
197 void bcopy (volatile const void *from, volatile void *to, size_t len);
198 void ovbcopy (const void *from, void *to, size_t len);
199 void bzero (volatile void *buf, size_t len);
200 void *memcpy (void *to, const void *from, size_t len);
202 int copystr (const void *kfaddr, void *kdaddr, size_t len,
204 int copyinstr (const void *udaddr, void *kaddr, size_t len,
206 int copyin (const void *udaddr, void *kaddr, size_t len);
207 int copyout (const void *kaddr, void *udaddr, size_t len);
209 int fubyte (const void *base);
210 int subyte (void *base, int byte);
211 long fuword (const void *base);
212 int suword (void *base, long word);
213 int fusword (void *base);
214 int susword (void *base, int word);
216 void realitexpire (void *);
217 void DELAY(int usec);
219 void startprofclock (struct proc *);
220 void stopprofclock (struct proc *);
221 void setstatclockrate (int hzrate);
224 * Console I/O spinlocks - these typically also hard-disable interrupts
227 void cons_lock(void);
228 void cons_unlock(void);
231 * Kernel environment support functions and sundry.
233 char *kgetenv (const char *name);
234 int ksetenv(const char *name, const char *value);
235 int kunsetenv(const char *name);
236 void kfreeenv(char *env);
237 int ktestenv(const char *name);
238 /* XXX TGEN Get rid of these compat defines. */
239 #define testenv ktestenv
240 #define freeenv kfreeenv
241 int kgetenv_int (const char *name, int *data);
242 int kgetenv_string (const char *name, char *data, int size);
243 int kgetenv_quad (const char *name, quad_t *data);
244 extern char *kern_envp;
246 #ifdef APM_FIXUP_CALLTODO
247 void adjust_timeout_calltodo (struct timeval *time_change);
248 #endif /* APM_FIXUP_CALLTODO */
250 #include <sys/libkern.h>
252 /* Initialize the world */
253 void mi_startup (void);
254 void consinit (void);
255 void cpu_initclocks (void *arg __unused);
257 void usrinfoinit (void);
259 /* Finalize the world. */
260 void shutdown_nice (int);
263 * Kernel to clock driver interface.
265 void inittodr (time_t base);
266 void resettodr (void);
267 void startrtclock (void);
270 typedef void timeout_t (void *); /* timeout function type */
271 #define CALLOUT_HANDLE_INITIALIZER(handle) \
275 /* OBSOLETE INTERFACE */
276 void callout_handle_init (struct callout_handle *);
277 struct callout_handle timeout (timeout_t *, void *, int);
278 void untimeout (timeout_t *, void *, struct callout_handle);
281 /* Interrupt management */
284 * For the alpha arch, some of these functions are static __inline, and
285 * the others should be.
288 void setdelayed (void);
289 void setsoftcambio (void);
290 void setsoftcamnet (void);
291 void setsoftunused02 (void);
292 void setsoftcrypto (void);
293 void setsoftunused01 (void);
294 void setsofttty (void);
295 void setsoftvm (void);
296 void setsofttq (void);
297 void schedsofttty (void);
299 #endif /* __i386__ */
302 * Various callout lists.
305 /* Exit callout list declarations. */
306 typedef void (*exitlist_fn) (struct thread *td);
308 int at_exit (exitlist_fn function);
309 int rm_at_exit (exitlist_fn function);
311 /* Fork callout list declarations. */
312 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
315 int at_fork (forklist_fn function);
316 int rm_at_fork (forklist_fn function);
319 * Not exactly a callout LIST, but a callout entry.
320 * Allow an external module to define a hardware watchdog tickler.
321 * Normally a process would do this, but there are times when the
322 * kernel needs to be able to hold off the watchdog, when the process
323 * is not active, e.g., when dumping core.
325 typedef void (*watchdog_tickle_fn) (void);
327 extern watchdog_tickle_fn wdog_tickler;
330 * Common `proc' functions are declared here so that proc.h can be included
333 int tsleep (void *, int, const char *, int);
334 int msleep (void *, struct spinlock *, int, const char *, int);
335 void tsleep_interlock (void *chan);
337 void wakeup (void *chan);
338 void wakeup_one (void *chan);
339 void wakeup_mycpu (void *chan);
340 void wakeup_mycpu_one (void *chan);
341 void wakeup_oncpu (struct globaldata *gd, void *chan);
342 void wakeup_oncpu_one (struct globaldata *gd, void *chan);
343 void wakeup_domain (void *chan, int domain);
344 void wakeup_domain_one (void *chan, int domain);
347 * Common `cdev_t' stuff are declared here to avoid #include poisoning
352 udev_t dev2udev(cdev_t x);
353 cdev_t udev2dev(udev_t x, int b);
354 int uminor(udev_t dev);
355 int umajor(udev_t dev);
356 udev_t makeudev(int x, int y);
359 #endif /* !_SYS_SYSTM_H_ */