More clock cleanup:
[dragonfly.git] / sys / sys / systm.h
CommitLineData
984263bc
MD
1/*-
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.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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
36 * SUCH DAMAGE.
37 *
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 $
a535608c 40 * $DragonFly: src/sys/sys/systm.h,v 1.81 2008/09/11 00:35:49 dillon Exp $
984263bc
MD
41 */
42
43#ifndef _SYS_SYSTM_H_
44#define _SYS_SYSTM_H_
45
d9f3f6fa
CP
46#ifndef _KERNEL
47#error "This file should not be included by userland programs."
03d6a592 48#else
d9f3f6fa 49
e2565a42
MD
50#ifndef _MACHINE_TYPES_H_
51#include <machine/types.h>
52#endif
53#ifndef _MACHINE_STDARG_H_
54#include <machine/stdarg.h>
55#endif
984263bc
MD
56#include <machine/atomic.h>
57#include <machine/cpufunc.h>
58#include <sys/callout.h>
59
60extern int securelevel; /* system security level (see init(8)) */
7e42c007 61extern int kernel_mem_readonly; /* disable writes to kernel memory */
984263bc
MD
62
63extern int cold; /* nonzero if we are doing a cold boot */
dbcd0c9b 64extern int tsleep_now_works; /* tsleep won't just return any more */
984263bc
MD
65extern const char *panicstr; /* panic message */
66extern int dumping; /* system is dumping */
67extern int safepri; /* safe ipl when cold or panicing */
68extern char version[]; /* system version */
69extern char copyright[]; /* system copyright */
70
984263bc
MD
71extern int selwait; /* select timeout address */
72
73extern u_char curpriority; /* priority of current process */
74
75extern int physmem; /* physical memory */
76
b13267a5 77extern cdev_t dumpdev; /* dump device */
e0fc5693
MD
78extern int dumplo; /* OBSOLETE */
79extern u_int64_t dumplo64; /* block number into dumpdev, start of dump */
984263bc 80
b13267a5
MD
81extern cdev_t rootdev; /* root device */
82extern cdev_t rootdevs[2]; /* possible root devices */
984263bc 83extern char *rootdevnames[2]; /* names of possible root devices */
984263bc
MD
84
85extern int boothowto; /* reboot flags, from console subsystem */
86extern int bootverbose; /* nonzero to print verbose messages */
87
88extern int maxusers; /* system tune hint */
89
17a9f566 90extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
90100055
JH
91extern int ncpus2; /* ncpus rounded down to power of 2 */
92extern int ncpus2_shift; /* log base 2 of ncpus2 */
93extern int ncpus2_mask; /* ncpus2 - 1 */
b45759e1
MD
94extern int ncpus_fit; /* round up to a power of 2 */
95extern int ncpus_fit_mask; /* ncpus_fit - 1 */
da3639ef 96extern int clocks_running; /* timing/timeout subsystem is operational */
17a9f566 97
97ee3efc 98/* XXX TGEN these don't belong here, they're MD on i386/amd64 */
527fddf7 99extern u_int cpu_feature; /* CPUID_* features */
97ee3efc
TS
100extern u_int cpu_feature2; /* CPUID2_* features */
101
b9b7eb27
MD
102extern int nfs_diskless_valid; /* NFS diskless params were obtained */
103extern vm_paddr_t Maxmem; /* Highest physical memory address in system */
527fddf7 104
984263bc 105#ifdef INVARIANTS /* The option is always available */
a535608c
MD
106#define KASSERT(exp,msg) do { if (__predict_false(!(exp))) \
107 panic msg; } while (0)
108#define KKASSERT(exp) do { if (__predict_false(!(exp))) \
109 panic("assertion: %s in %s", \
110 #exp, __func__); } while (0)
984263bc
MD
111#else
112#define KASSERT(exp,msg)
41c20dac 113#define KKASSERT(exp)
984263bc
MD
114#endif
115
832f5800
JS
116#define CTASSERT(x) _CTASSERT(x, __LINE__)
117#define _CTASSERT(x, y) __CTASSERT(x, y)
118#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
119
984263bc
MD
120/*
121 * General function declarations.
122 */
123
88c4d2f6 124struct intrframe;
bf765287 125struct spinlock;
362e59be 126struct lwkt_serialize;
984263bc
MD
127struct malloc_type;
128struct proc;
f1d1c3fa 129struct xwait;
984263bc
MD
130struct timeval;
131struct tty;
132struct uio;
8ad65e08 133struct globaldata;
41c20dac 134struct thread;
4a22e893 135struct trapframe;
6bf59cd2 136struct user;
135d7199 137struct vmspace;
4e7c41c5 138struct savetls;
c8dfd00d 139struct krate;
984263bc 140
b153f746 141void Debugger (const char *msg);
1e5fb84b 142void print_backtrace(void);
b153f746 143void mi_gdinit (struct globaldata *gd, int cpu);
6bf59cd2 144void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
b153f746
RG
145int dumpstatus (vm_offset_t addr, off_t count);
146int nullop (void);
b13267a5 147int seltrue (cdev_t dev, int which);
b153f746
RG
148int ureadc (int, struct uio *);
149void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
150void *phashinit (int count, struct malloc_type *type, u_long *nentries);
151
4a22e893 152int cpu_sanitize_frame (struct trapframe *);
4e7c41c5 153int cpu_sanitize_tls (struct savetls *);
b402c633 154void cpu_mplock_contested(void);
06615ccb 155void cpu_spinlock_contested(void);
527fddf7
MD
156void cpu_halt (void);
157void cpu_reset (void);
b153f746
RG
158void cpu_boot (int);
159void cpu_rootconf (void);
135d7199
MD
160void cpu_vmspace_alloc(struct vmspace *);
161void cpu_vmspace_free(struct vmspace *);
4e7c41c5 162void set_user_TLS(void);
431d0fef 163void set_vkernel_fp(struct trapframe *);
460426e6 164int kvm_access_check(vm_offset_t, vm_offset_t, int);
1184892f
MD
165
166vm_paddr_t kvtop(void *addr);
167int is_physical_memory (vm_offset_t addr);
168
984263bc
MD
169extern uint32_t crc32_tab[];
170uint32_t crc32(const void *buf, size_t size);
432417ed 171uint32_t crc32_ext(const void *buf, size_t size, uint32_t ocrc);
b153f746
RG
172void init_param1 (void);
173void init_param2 (int physpages);
174void tablefull (const char *);
379210cb 175int kvcprintf (char const *, void (*)(int, void*), void *, int,
e2565a42 176 __va_list) __printflike(1, 0);
b153f746
RG
177int log (int, const char *, ...) __printflike(2, 3);
178void logwakeup (void);
179void log_console (struct uio *);
169276ba 180int kprintf (const char *, ...) __printflike(1, 2);
28a93126 181int kprintf0(const char *, ...) __printflike(1, 2);
c8dfd00d 182void krateprintf (struct krate *, const char *, ...) __printflike(2, 3);
169276ba 183int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
169276ba 184int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
b153f746 185int uprintf (const char *, ...) __printflike(1, 2);
379210cb
MD
186int kvprintf (const char *, __va_list) __printflike(1, 0);
187int kvsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
188int kvsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
b153f746 189int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
e93690c2
MD
190int ksscanf (const char *, char const *, ...);
191int kvsscanf (const char *, char const *, __va_list);
44a09dd6 192
b153f746
RG
193long strtol (const char *, char **, int);
194u_long strtoul (const char *, char **, int);
195quad_t strtoq (const char *, char **, int);
196u_quad_t strtouq (const char *, char **, int);
984263bc 197
f15db79e
MD
198/*
199 * note: some functions commonly used by device drivers may be passed
200 * pointers to volatile storage, volatile set to avoid warnings.
527fddf7
MD
201 *
202 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
203 * explicitly not meant to be sophisticated.
204 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
205 * This routine is explicitly not meant to be sophisticated.
f15db79e 206 */
527fddf7
MD
207void bcopyb (const void *from, void *to, size_t len);
208void bcopyi (const void *from, void *to, size_t len);
b153f746
RG
209void bcopy (volatile const void *from, volatile void *to, size_t len);
210void ovbcopy (const void *from, void *to, size_t len);
afaa1d56 211void bzero (volatile void *buf, size_t len);
b153f746 212void *memcpy (void *to, const void *from, size_t len);
984263bc 213
b153f746
RG
214int copystr (const void *kfaddr, void *kdaddr, size_t len,
215 size_t *lencopied);
216int copyinstr (const void *udaddr, void *kaddr, size_t len,
217 size_t *lencopied);
218int copyin (const void *udaddr, void *kaddr, size_t len);
219int copyout (const void *kaddr, void *udaddr, size_t len);
984263bc 220
b153f746
RG
221int fubyte (const void *base);
222int subyte (void *base, int byte);
b153f746
RG
223long fuword (const void *base);
224int suword (void *base, long word);
225int fusword (void *base);
226int susword (void *base, int word);
984263bc 227
b153f746 228void realitexpire (void *);
f0f0df1c 229void DELAY(int usec);
dbcd0c9b 230void DRIVERSLEEP(int usec);
984263bc 231
b153f746
RG
232void startprofclock (struct proc *);
233void stopprofclock (struct proc *);
234void setstatclockrate (int hzrate);
984263bc 235
b9b7eb27
MD
236/*
237 * Console I/O spinlocks - these typically also hard-disable interrupts
238 * for the duration.
239 */
240void cons_lock(void);
241void cons_unlock(void);
242
a01a0504
TS
243/*
244 * Kernel environment support functions and sundry.
245 */
bc01a404 246char *kgetenv (const char *name);
a01a0504
TS
247int ksetenv(const char *name, const char *value);
248int kunsetenv(const char *name);
249void kfreeenv(char *env);
250int ktestenv(const char *name);
bc01a404
MD
251int kgetenv_int (const char *name, int *data);
252int kgetenv_string (const char *name, char *data, int size);
28a93126 253int kgetenv_ulong(const char *name, unsigned long *data);
bc01a404 254int kgetenv_quad (const char *name, quad_t *data);
984263bc
MD
255extern char *kern_envp;
256
257#ifdef APM_FIXUP_CALLTODO
b153f746 258void adjust_timeout_calltodo (struct timeval *time_change);
984263bc
MD
259#endif /* APM_FIXUP_CALLTODO */
260
261#include <sys/libkern.h>
262
263/* Initialize the world */
a8a86718 264void mi_startup (void);
b153f746 265void nchinit (void);
984263bc
MD
266
267/* Finalize the world. */
b153f746 268void shutdown_nice (int);
984263bc
MD
269
270/*
271 * Kernel to clock driver interface.
272 */
b153f746
RG
273void inittodr (time_t base);
274void resettodr (void);
275void startrtclock (void);
984263bc
MD
276
277/* Timeouts */
b153f746 278typedef void timeout_t (void *); /* timeout function type */
984263bc
MD
279
280/* Interrupt management */
281
282/*
283 * For the alpha arch, some of these functions are static __inline, and
284 * the others should be.
285 */
28a93126 286#if defined(__i386__) || defined(__amd64__)
b153f746 287void setdelayed (void);
b153f746
RG
288void setsoftcambio (void);
289void setsoftcamnet (void);
0fb6ec96 290void setsoftunused02 (void);
b153f746 291void setsoftcrypto (void);
0fb6ec96 292void setsoftunused01 (void);
b153f746
RG
293void setsofttty (void);
294void setsoftvm (void);
295void setsofttq (void);
b153f746 296void schedsofttty (void);
b153f746 297void splz (void);
984263bc
MD
298#endif /* __i386__ */
299
984263bc
MD
300/*
301 * Various callout lists.
302 */
303
304/* Exit callout list declarations. */
b153f746 305typedef void (*exitlist_fn) (struct thread *td);
984263bc 306
b153f746
RG
307int at_exit (exitlist_fn function);
308int rm_at_exit (exitlist_fn function);
984263bc
MD
309
310/* Fork callout list declarations. */
b153f746
RG
311typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
312 int flags);
984263bc 313
b153f746
RG
314int at_fork (forklist_fn function);
315int rm_at_fork (forklist_fn function);
984263bc
MD
316
317/*
318 * Not exactly a callout LIST, but a callout entry.
319 * Allow an external module to define a hardware watchdog tickler.
320 * Normally a process would do this, but there are times when the
321 * kernel needs to be able to hold off the watchdog, when the process
322 * is not active, e.g., when dumping core.
323 */
b153f746 324typedef void (*watchdog_tickle_fn) (void);
984263bc
MD
325
326extern watchdog_tickle_fn wdog_tickler;
327
328/*
329 * Common `proc' functions are declared here so that proc.h can be included
330 * less often.
331 */
bf765287
MD
332int tsleep (void *, int, const char *, int);
333int msleep (void *, struct spinlock *, int, const char *, int);
362e59be
SZ
334int serialize_sleep(void *, struct lwkt_serialize *, int,
335 const char *, int);
16523a43 336void tsleep_interlock (void *chan);
a22c590e 337int lwkt_sleep (const char *, int);
9a379a4a 338void tstop (void);
b153f746
RG
339void wakeup (void *chan);
340void wakeup_one (void *chan);
b336a9b1
MD
341void wakeup_mycpu (void *chan);
342void wakeup_mycpu_one (void *chan);
343void wakeup_oncpu (struct globaldata *gd, void *chan);
344void wakeup_oncpu_one (struct globaldata *gd, void *chan);
da5fb9ef
MD
345void wakeup_domain (void *chan, int domain);
346void wakeup_domain_one (void *chan, int domain);
984263bc
MD
347
348/*
b13267a5 349 * Common `cdev_t' stuff are declared here to avoid #include poisoning
984263bc
MD
350 */
351
b13267a5
MD
352int major(cdev_t x);
353int minor(cdev_t x);
354udev_t dev2udev(cdev_t x);
355cdev_t udev2dev(udev_t x, int b);
984263bc
MD
356int uminor(udev_t dev);
357int umajor(udev_t dev);
358udev_t makeudev(int x, int y);
03d6a592
MD
359
360#endif /* _KERNEL */
984263bc 361#endif /* !_SYS_SYSTM_H_ */