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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 1.66 2007/02/18 16:12:43 corecode 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 clocks_running; /* timing/timeout subsystem is operational */
94 /* XXX TGEN these don't belong here, they're MD on i386/amd64 */
95 extern u_int cpu_feature; /* CPUID_* features */
96 extern u_int cpu_feature2; /* CPUID2_* features */
98 extern int nfs_diskless_valid; /* NFS diskless params were obtained */
99 extern vm_paddr_t Maxmem; /* Highest physical memory address in system */
101 #ifdef INVARIANTS /* The option is always available */
102 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
103 #define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
105 #define KASSERT(exp,msg)
106 #define KKASSERT(exp)
109 #define CTASSERT(x) _CTASSERT(x, __LINE__)
110 #define _CTASSERT(x, y) __CTASSERT(x, y)
111 #define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
114 * General function declarations.
132 void Debugger (const char *msg);
133 void backtrace(void);
134 void mi_gdinit (struct globaldata *gd, int cpu);
135 void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
136 int dumpstatus (vm_offset_t addr, off_t count);
138 int seltrue (cdev_t dev, int which);
139 int ureadc (int, struct uio *);
140 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
141 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
143 int cpu_sanitize_frame (struct trapframe *);
144 int cpu_sanitize_tls (struct savetls *);
145 void cpu_halt (void);
146 void cpu_reset (void);
148 void cpu_rootconf (void);
149 void cpu_vmspace_alloc(struct vmspace *);
150 void cpu_vmspace_free(struct vmspace *);
151 void set_user_TLS(void);
152 void set_vkernel_fp(struct trapframe *);
153 int kvm_access_check(vm_offset_t, vm_offset_t, int);
155 vm_paddr_t kvtop(void *addr);
156 int is_physical_memory (vm_offset_t addr);
158 extern uint32_t crc32_tab[];
159 uint32_t crc32(const void *buf, size_t size);
160 void init_param1 (void);
161 void init_param2 (int physpages);
162 void tablefull (const char *);
163 int kvcprintf (char const *, void (*)(int, void*), void *, int,
164 __va_list) __printflike(1, 0);
165 int log (int, const char *, ...) __printflike(2, 3);
166 void logwakeup (void);
167 void log_console (struct uio *);
168 int kprintf (const char *, ...) __printflike(1, 2);
169 int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
170 int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
171 int uprintf (const char *, ...) __printflike(1, 2);
172 int kvprintf (const char *, __va_list) __printflike(1, 0);
173 int kvsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
174 int kvsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
175 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
176 int ksscanf (const char *, char const *, ...);
177 int kvsscanf (const char *, char const *, __va_list);
179 long strtol (const char *, char **, int);
180 u_long strtoul (const char *, char **, int);
181 quad_t strtoq (const char *, char **, int);
182 u_quad_t strtouq (const char *, char **, int);
185 * note: some functions commonly used by device drivers may be passed
186 * pointers to volatile storage, volatile set to avoid warnings.
188 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
189 * explicitly not meant to be sophisticated.
190 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
191 * This routine is explicitly not meant to be sophisticated.
193 void bcopyb (const void *from, void *to, size_t len);
194 void bcopyi (const void *from, void *to, size_t len);
195 void bcopy (volatile const void *from, volatile void *to, size_t len);
196 void ovbcopy (const void *from, void *to, size_t len);
197 void bzero (volatile void *buf, size_t len);
198 void *memcpy (void *to, const void *from, size_t len);
200 int copystr (const void *kfaddr, void *kdaddr, size_t len,
202 int copyinstr (const void *udaddr, void *kaddr, size_t len,
204 int copyin (const void *udaddr, void *kaddr, size_t len);
205 int copyout (const void *kaddr, void *udaddr, size_t len);
207 int fubyte (const void *base);
208 int subyte (void *base, int byte);
209 long fuword (const void *base);
210 int suword (void *base, long word);
211 int fusword (void *base);
212 int susword (void *base, int word);
214 void realitexpire (void *);
215 void DELAY(int usec);
217 void startprofclock (struct proc *);
218 void stopprofclock (struct proc *);
219 void setstatclockrate (int hzrate);
222 * Console I/O spinlocks - these typically also hard-disable interrupts
225 void cons_lock(void);
226 void cons_unlock(void);
229 * Kernel environment support functions and sundry.
231 char *kgetenv (const char *name);
232 int ksetenv(const char *name, const char *value);
233 int kunsetenv(const char *name);
234 void kfreeenv(char *env);
235 int ktestenv(const char *name);
236 /* XXX TGEN Get rid of these compat defines. */
237 #define testenv ktestenv
238 #define freeenv kfreeenv
239 int kgetenv_int (const char *name, int *data);
240 int kgetenv_string (const char *name, char *data, int size);
241 int kgetenv_quad (const char *name, quad_t *data);
242 extern char *kern_envp;
244 #ifdef APM_FIXUP_CALLTODO
245 void adjust_timeout_calltodo (struct timeval *time_change);
246 #endif /* APM_FIXUP_CALLTODO */
248 #include <sys/libkern.h>
250 /* Initialize the world */
251 void mi_startup (void);
252 void consinit (void);
253 void cpu_initclocks (void);
255 void usrinfoinit (void);
257 /* Finalize the world. */
258 void shutdown_nice (int);
261 * Kernel to clock driver interface.
263 void inittodr (time_t base);
264 void resettodr (void);
265 void startrtclock (void);
268 typedef void timeout_t (void *); /* timeout function type */
269 #define CALLOUT_HANDLE_INITIALIZER(handle) \
273 /* OBSOLETE INTERFACE */
274 void callout_handle_init (struct callout_handle *);
275 struct callout_handle timeout (timeout_t *, void *, int);
276 void untimeout (timeout_t *, void *, struct callout_handle);
279 /* Interrupt management */
282 * For the alpha arch, some of these functions are static __inline, and
283 * the others should be.
286 void setdelayed (void);
287 void setsoftcambio (void);
288 void setsoftcamnet (void);
289 void setsoftunused02 (void);
290 void setsoftcrypto (void);
291 void setsoftunused01 (void);
292 void setsofttty (void);
293 void setsoftvm (void);
294 void setsofttq (void);
295 void schedsofttty (void);
297 #endif /* __i386__ */
300 * Various callout lists.
303 /* Exit callout list declarations. */
304 typedef void (*exitlist_fn) (struct thread *td);
306 int at_exit (exitlist_fn function);
307 int rm_at_exit (exitlist_fn function);
309 /* Fork callout list declarations. */
310 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
313 int at_fork (forklist_fn function);
314 int rm_at_fork (forklist_fn function);
317 * Not exactly a callout LIST, but a callout entry.
318 * Allow an external module to define a hardware watchdog tickler.
319 * Normally a process would do this, but there are times when the
320 * kernel needs to be able to hold off the watchdog, when the process
321 * is not active, e.g., when dumping core.
323 typedef void (*watchdog_tickle_fn) (void);
325 extern watchdog_tickle_fn wdog_tickler;
328 * Common `proc' functions are declared here so that proc.h can be included
331 int tsleep (void *, int, const char *, int);
332 int msleep (void *, struct spinlock *, int, const char *, int);
333 void tsleep_interlock (void *chan);
335 void wakeup (void *chan);
336 void wakeup_one (void *chan);
337 void wakeup_mycpu (void *chan);
338 void wakeup_mycpu_one (void *chan);
339 void wakeup_oncpu (struct globaldata *gd, void *chan);
340 void wakeup_oncpu_one (struct globaldata *gd, void *chan);
341 void wakeup_domain (void *chan, int domain);
342 void wakeup_domain_one (void *chan, int domain);
345 * Common `cdev_t' stuff are declared here to avoid #include poisoning
350 udev_t dev2udev(cdev_t x);
351 cdev_t udev2dev(udev_t x, int b);
352 int uminor(udev_t dev);
353 int umajor(udev_t dev);
354 udev_t makeudev(int x, int y);
357 #endif /* !_SYS_SYSTM_H_ */