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.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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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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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 $
40 * $DragonFly: src/sys/sys/systm.h,v 1.80 2008/07/23 17:22:33 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 int tsleep_now_works
; /* tsleep won't just return any more */
65 extern const char *panicstr
; /* panic message */
66 extern int dumping
; /* system is dumping */
67 extern int safepri
; /* safe ipl when cold or panicing */
68 extern char version
[]; /* system version */
69 extern char copyright
[]; /* system copyright */
71 extern int selwait
; /* select timeout address */
73 extern u_char curpriority
; /* priority of current process */
75 extern int physmem
; /* physical memory */
77 extern cdev_t dumpdev
; /* dump device */
78 extern int dumplo
; /* OBSOLETE */
79 extern u_int64_t dumplo64
; /* block number into dumpdev, start of dump */
81 extern cdev_t rootdev
; /* root device */
82 extern cdev_t rootdevs
[2]; /* possible root devices */
83 extern char *rootdevnames
[2]; /* names of possible root devices */
85 extern int boothowto
; /* reboot flags, from console subsystem */
86 extern int bootverbose
; /* nonzero to print verbose messages */
88 extern int maxusers
; /* system tune hint */
90 extern int ncpus
; /* total number of cpus (real, hyper, virtual)*/
91 extern int ncpus2
; /* ncpus rounded down to power of 2 */
92 extern int ncpus2_shift
; /* log base 2 of ncpus2 */
93 extern int ncpus2_mask
; /* ncpus2 - 1 */
94 extern int ncpus_fit
; /* round up to a power of 2 */
95 extern int ncpus_fit_mask
; /* ncpus_fit - 1 */
96 extern int clocks_running
; /* timing/timeout subsystem is operational */
98 /* XXX TGEN these don't belong here, they're MD on i386/amd64 */
99 extern u_int cpu_feature
; /* CPUID_* features */
100 extern u_int cpu_feature2
; /* CPUID2_* features */
102 extern int nfs_diskless_valid
; /* NFS diskless params were obtained */
103 extern vm_paddr_t Maxmem
; /* Highest physical memory address in system */
105 #ifdef INVARIANTS /* The option is always available */
106 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
107 #define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
109 #define KASSERT(exp,msg)
110 #define KKASSERT(exp)
113 #define CTASSERT(x) _CTASSERT(x, __LINE__)
114 #define _CTASSERT(x, y) __CTASSERT(x, y)
115 #define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
118 * General function declarations.
123 struct lwkt_serialize
;
138 void Debugger (const char *msg
);
139 void backtrace(void);
140 void mi_gdinit (struct globaldata
*gd
, int cpu
);
141 void mi_proc0init(struct globaldata
*gd
, struct user
*proc0paddr
);
142 int dumpstatus (vm_offset_t addr
, off_t count
);
144 int seltrue (cdev_t dev
, int which
);
145 int ureadc (int, struct uio
*);
146 void *hashinit (int count
, struct malloc_type
*type
, u_long
*hashmask
);
147 void *phashinit (int count
, struct malloc_type
*type
, u_long
*nentries
);
149 int cpu_sanitize_frame (struct trapframe
*);
150 int cpu_sanitize_tls (struct savetls
*);
151 void cpu_mplock_contested(void);
152 void cpu_spinlock_contested(void);
153 void cpu_halt (void);
154 void cpu_reset (void);
156 void cpu_rootconf (void);
157 void cpu_vmspace_alloc(struct vmspace
*);
158 void cpu_vmspace_free(struct vmspace
*);
159 void set_user_TLS(void);
160 void set_vkernel_fp(struct trapframe
*);
161 int kvm_access_check(vm_offset_t
, vm_offset_t
, int);
163 vm_paddr_t
kvtop(void *addr
);
164 int is_physical_memory (vm_offset_t addr
);
166 extern uint32_t crc32_tab
[];
167 uint32_t crc32(const void *buf
, size_t size
);
168 uint32_t crc32_ext(const void *buf
, size_t size
, uint32_t ocrc
);
169 void init_param1 (void);
170 void init_param2 (int physpages
);
171 void tablefull (const char *);
172 int kvcprintf (char const *, void (*)(int, void*), void *, int,
173 __va_list
) __printflike(1, 0);
174 int log (int, const char *, ...) __printflike(2, 3);
175 void logwakeup (void);
176 void log_console (struct uio
*);
177 int kprintf (const char *, ...) __printflike(1, 2);
178 int kprintf0(const char *, ...) __printflike(1, 2);
179 void krateprintf (struct krate
*, const char *, ...) __printflike(2, 3);
180 int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
181 int ksprintf (char *buf
, const char *, ...) __printflike(2, 3);
182 int uprintf (const char *, ...) __printflike(1, 2);
183 int kvprintf (const char *, __va_list
) __printflike(1, 0);
184 int kvsnprintf (char *, size_t, const char *, __va_list
) __printflike(3, 0);
185 int kvsprintf (char *buf
, const char *, __va_list
) __printflike(2, 0);
186 int ttyprintf (struct tty
*, const char *, ...) __printflike(2, 3);
187 int ksscanf (const char *, char const *, ...);
188 int kvsscanf (const char *, char const *, __va_list
);
190 long strtol (const char *, char **, int);
191 u_long
strtoul (const char *, char **, int);
192 quad_t
strtoq (const char *, char **, int);
193 u_quad_t
strtouq (const char *, char **, int);
196 * note: some functions commonly used by device drivers may be passed
197 * pointers to volatile storage, volatile set to avoid warnings.
199 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
200 * explicitly not meant to be sophisticated.
201 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
202 * This routine is explicitly not meant to be sophisticated.
204 void bcopyb (const void *from
, void *to
, size_t len
);
205 void bcopyi (const void *from
, void *to
, size_t len
);
206 void bcopy (volatile const void *from
, volatile void *to
, size_t len
);
207 void ovbcopy (const void *from
, void *to
, size_t len
);
208 void bzero (volatile void *buf
, size_t len
);
209 void *memcpy (void *to
, const void *from
, size_t len
);
211 int copystr (const void *kfaddr
, void *kdaddr
, size_t len
,
213 int copyinstr (const void *udaddr
, void *kaddr
, size_t len
,
215 int copyin (const void *udaddr
, void *kaddr
, size_t len
);
216 int copyout (const void *kaddr
, void *udaddr
, size_t len
);
218 int fubyte (const void *base
);
219 int subyte (void *base
, int byte
);
220 long fuword (const void *base
);
221 int suword (void *base
, long word
);
222 int fusword (void *base
);
223 int susword (void *base
, int word
);
225 void realitexpire (void *);
226 void DELAY(int usec
);
227 void DRIVERSLEEP(int usec
);
229 void startprofclock (struct proc
*);
230 void stopprofclock (struct proc
*);
231 void setstatclockrate (int hzrate
);
234 * Console I/O spinlocks - these typically also hard-disable interrupts
237 void cons_lock(void);
238 void cons_unlock(void);
241 * Kernel environment support functions and sundry.
243 char *kgetenv (const char *name
);
244 int ksetenv(const char *name
, const char *value
);
245 int kunsetenv(const char *name
);
246 void kfreeenv(char *env
);
247 int ktestenv(const char *name
);
248 int kgetenv_int (const char *name
, int *data
);
249 int kgetenv_string (const char *name
, char *data
, int size
);
250 int kgetenv_ulong(const char *name
, unsigned long *data
);
251 int kgetenv_quad (const char *name
, quad_t
*data
);
252 extern char *kern_envp
;
254 #ifdef APM_FIXUP_CALLTODO
255 void adjust_timeout_calltodo (struct timeval
*time_change
);
256 #endif /* APM_FIXUP_CALLTODO */
258 #include <sys/libkern.h>
260 /* Initialize the world */
261 void mi_startup (void);
262 void cpu_initclocks (void *arg __unused
);
265 /* Finalize the world. */
266 void shutdown_nice (int);
269 * Kernel to clock driver interface.
271 void inittodr (time_t base
);
272 void resettodr (void);
273 void startrtclock (void);
276 typedef void timeout_t (void *); /* timeout function type */
278 /* Interrupt management */
281 * For the alpha arch, some of these functions are static __inline, and
282 * the others should be.
284 #if defined(__i386__) || defined(__amd64__)
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 int serialize_sleep(void *, struct lwkt_serialize
*, int,
334 void tsleep_interlock (void *chan
);
335 int lwkt_sleep (const char *, int);
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_ */