This should hopefully fix current issues with bootstrap buildworlds from
[dragonfly.git] / sys / sys / systm.h
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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 $
6b08710e 40 * $DragonFly: src/sys/sys/systm.h,v 1.16 2003/11/15 21:05:43 dillon Exp $
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41 */
42
43#ifndef _SYS_SYSTM_H_
44#define _SYS_SYSTM_H_
45
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46#ifndef _MACHINE_TYPES_H_
47#include <machine/types.h>
48#endif
49#ifndef _MACHINE_STDARG_H_
50#include <machine/stdarg.h>
51#endif
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52#include <machine/atomic.h>
53#include <machine/cpufunc.h>
54#include <sys/callout.h>
55
56extern int securelevel; /* system security level (see init(8)) */
57
58extern int cold; /* nonzero if we are doing a cold boot */
59extern const char *panicstr; /* panic message */
60extern int dumping; /* system is dumping */
61extern int safepri; /* safe ipl when cold or panicing */
62extern char version[]; /* system version */
63extern char copyright[]; /* system copyright */
64
65extern int nswap; /* size of swap space */
66
67extern int selwait; /* select timeout address */
68
69extern u_char curpriority; /* priority of current process */
70
71extern int physmem; /* physical memory */
72
73extern dev_t dumpdev; /* dump device */
74extern long dumplo; /* offset into dumpdev */
75
76extern dev_t rootdev; /* root device */
77extern dev_t rootdevs[2]; /* possible root devices */
78extern char *rootdevnames[2]; /* names of possible root devices */
79extern struct vnode *rootvp; /* vnode equivalent to above */
80
81extern int boothowto; /* reboot flags, from console subsystem */
82extern int bootverbose; /* nonzero to print verbose messages */
83
84extern int maxusers; /* system tune hint */
85
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86extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
87
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88#ifdef INVARIANTS /* The option is always available */
89#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
6b08710e 90#define KKASSERT(exp) if (!(exp)) panic("assertion: " #exp " in %s", __FUNCTION__)
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91#define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
92#define CONDSPLASSERT(cond, level, msg) do { \
93 if (cond) \
94 SPLASSERT(level, msg); \
95} while (0)
96#else
97#define KASSERT(exp,msg)
41c20dac 98#define KKASSERT(exp)
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99#define SPLASSERT(level, msg)
100#define CONDSPLASSERT(cond, level, msg)
101#endif
102
103/*
104 * General function declarations.
105 */
106
107struct clockframe;
108struct malloc_type;
109struct proc;
f1d1c3fa 110struct xwait;
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111struct timeval;
112struct tty;
113struct uio;
8ad65e08 114struct globaldata;
41c20dac 115struct thread;
984263bc 116
b153f746 117void Debugger (const char *msg);
801f17b9 118void backtrace(void);
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119void mi_gdinit (struct globaldata *gd, int cpu);
120int dumpstatus (vm_offset_t addr, off_t count);
121int nullop (void);
122int eopnotsupp (void);
123int einval (void);
124int seltrue (dev_t dev, int which, struct thread *td);
125int ureadc (int, struct uio *);
126void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
127void *phashinit (int count, struct malloc_type *type, u_long *nentries);
128
129void cpu_boot (int);
130void cpu_rootconf (void);
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131extern uint32_t crc32_tab[];
132uint32_t crc32(const void *buf, size_t size);
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133void init_param1 (void);
134void init_param2 (int physpages);
135void tablefull (const char *);
136int addlog (const char *, ...) __printflike(1, 2);
137int kvprintf (char const *, void (*)(int, void*), void *, int,
e2565a42 138 __va_list) __printflike(1, 0);
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139int log (int, const char *, ...) __printflike(2, 3);
140void logwakeup (void);
141void log_console (struct uio *);
142int printf (const char *, ...) __printflike(1, 2);
143int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
144int sprintf (char *buf, const char *, ...) __printflike(2, 3);
145int uprintf (const char *, ...) __printflike(1, 2);
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146int vprintf (const char *, __va_list) __printflike(1, 0);
147int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
148int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
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149int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
150int sscanf (const char *, char const *, ...);
e2565a42 151int vsscanf (const char *, char const *, __va_list);
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152long strtol (const char *, char **, int);
153u_long strtoul (const char *, char **, int);
154quad_t strtoq (const char *, char **, int);
155u_quad_t strtouq (const char *, char **, int);
984263bc 156
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157/*
158 * note: some functions commonly used by device drivers may be passed
159 * pointers to volatile storage, volatile set to avoid warnings.
160 */
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161void bcopy (volatile const void *from, volatile void *to, size_t len);
162void ovbcopy (const void *from, void *to, size_t len);
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163
164#ifdef __i386__
b153f746 165extern void (*bzero) (volatile void *buf, size_t len);
984263bc 166#else
b153f746 167void bzero (void *buf, size_t len);
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168#endif
169
b153f746 170void *memcpy (void *to, const void *from, size_t len);
984263bc 171
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172int copystr (const void *kfaddr, void *kdaddr, size_t len,
173 size_t *lencopied);
174int copyinstr (const void *udaddr, void *kaddr, size_t len,
175 size_t *lencopied);
176int copyin (const void *udaddr, void *kaddr, size_t len);
177int copyout (const void *kaddr, void *udaddr, size_t len);
984263bc 178
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179int fubyte (const void *base);
180int subyte (void *base, int byte);
181int suibyte (void *base, int byte);
182long fuword (const void *base);
183int suword (void *base, long word);
184int fusword (void *base);
185int susword (void *base, int word);
984263bc 186
b153f746 187void realitexpire (void *);
f0f0df1c 188void DELAY(int usec);
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189void hardclock (struct clockframe *frame);
190void statclock (struct clockframe *frame);
984263bc 191
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192void startprofclock (struct proc *);
193void stopprofclock (struct proc *);
194void setstatclockrate (int hzrate);
984263bc 195
b153f746 196char *getenv (const char *name);
984263bc 197#define testenv getenv
6c6180e0 198#define freeenv(p)
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199int getenv_int (const char *name, int *data);
200int getenv_string (const char *name, char *data, int size);
201int getenv_quad (const char *name, quad_t *data);
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202extern char *kern_envp;
203
204#ifdef APM_FIXUP_CALLTODO
b153f746 205void adjust_timeout_calltodo (struct timeval *time_change);
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206#endif /* APM_FIXUP_CALLTODO */
207
208#include <sys/libkern.h>
209
210/* Initialize the world */
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211void consinit (void);
212void cpu_initclocks (void);
213void nchinit (void);
214void usrinfoinit (void);
215void vntblinit (void);
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216
217/* Finalize the world. */
b153f746 218void shutdown_nice (int);
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219
220/*
221 * Kernel to clock driver interface.
222 */
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223void inittodr (time_t base);
224void resettodr (void);
225void startrtclock (void);
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226
227/* Timeouts */
b153f746 228typedef void timeout_t (void *); /* timeout function type */
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229#define CALLOUT_HANDLE_INITIALIZER(handle) \
230 { NULL }
231
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232void callout_handle_init (struct callout_handle *);
233struct callout_handle timeout (timeout_t *, void *, int);
234void untimeout (timeout_t *, void *, struct callout_handle);
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235
236/* Interrupt management */
237
238/*
239 * For the alpha arch, some of these functions are static __inline, and
240 * the others should be.
241 */
242#ifdef __i386__
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243void setdelayed (void);
244void setsoftast (void);
245void setsoftcambio (void);
246void setsoftcamnet (void);
247void setsoftclock (void);
248void setsoftcrypto (void);
249void setsoftnet (void);
250void setsofttty (void);
251void setsoftvm (void);
252void setsofttq (void);
253void schedsoftcamnet (void);
254void schedsoftcambio (void);
255void schedsoftnet (void);
256void schedsofttty (void);
257void schedsoftvm (void);
258void schedsofttq (void);
259intrmask_t softclockpending (void);
260void spl0 (void);
261intrmask_t splbio (void);
262intrmask_t splcam (void);
263intrmask_t splclock (void);
264intrmask_t splcrypto (void);
265intrmask_t splhigh (void);
266intrmask_t splimp (void);
267intrmask_t splnet (void);
268intrmask_t splsoftcam (void);
269intrmask_t splsoftcambio (void);
270intrmask_t splsoftcamnet (void);
271intrmask_t splsoftclock (void);
272intrmask_t splsofttty (void);
273intrmask_t splsoftvm (void);
274intrmask_t splsofttq (void);
275intrmask_t splstatclock (void);
276intrmask_t spltty (void);
277intrmask_t splvm (void);
278void splx (intrmask_t ipl);
279void splz (void);
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280#endif /* __i386__ */
281
282#ifdef __alpha__
283#include <machine/ipl.h>
284#endif
285
286#ifdef INVARIANT_SUPPORT
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287void splbioassert (const char *msg);
288void splcamassert (const char *msg);
289void splclockassert (const char *msg);
290void splcryptoassert (const char *msg);
291void splhighassert (const char *msg);
292void splimpassert (const char *msg);
293void splnetassert (const char *msg);
294void splsoftcamassert (const char *msg);
295void splsoftcambioassert (const char *msg);
296void splsoftcamnetassert (const char *msg);
297void splsoftclockassert (const char *msg);
298void splsoftttyassert (const char *msg);
299void splsoftvmassert (const char *msg);
300void splsofttqassert (const char *msg);
301void splstatclockassert (const char *msg);
302void splttyassert (const char *msg);
303void splvmassert (const char *msg);
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304#endif /* INVARIANT_SUPPORT */
305
306/*
307 * XXX It's not clear how "machine independent" these will be yet, but
308 * they are used all over the place especially in pci drivers. We would
309 * have to modify lots of drivers since <machine/cpufunc.h> no longer
310 * implicitly causes these to be defined when it #included <machine/spl.h>
311 */
312extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
313extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
314extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
315extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
316extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
317
318/* Read only */
319extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
320extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
321extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
322
323/*
324 * Various callout lists.
325 */
326
327/* Exit callout list declarations. */
b153f746 328typedef void (*exitlist_fn) (struct thread *td);
984263bc 329
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330int at_exit (exitlist_fn function);
331int rm_at_exit (exitlist_fn function);
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332
333/* Fork callout list declarations. */
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334typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
335 int flags);
984263bc 336
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337int at_fork (forklist_fn function);
338int rm_at_fork (forklist_fn function);
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339
340/*
341 * Not exactly a callout LIST, but a callout entry.
342 * Allow an external module to define a hardware watchdog tickler.
343 * Normally a process would do this, but there are times when the
344 * kernel needs to be able to hold off the watchdog, when the process
345 * is not active, e.g., when dumping core.
346 */
b153f746 347typedef void (*watchdog_tickle_fn) (void);
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348
349extern watchdog_tickle_fn wdog_tickler;
350
351/*
352 * Common `proc' functions are declared here so that proc.h can be included
353 * less often.
354 */
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355int tsleep (void *chan, int slpflags, const char *wmesg, int timo);
356void wakeup (void *chan);
357void wakeup_one (void *chan);
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358
359/*
360 * Common `dev_t' stuff are declared here to avoid #include poisoning
361 */
362
363int major(dev_t x);
364int minor(dev_t x);
365dev_t makedev(int x, int y);
366udev_t dev2udev(dev_t x);
367dev_t udev2dev(udev_t x, int b);
368int uminor(udev_t dev);
369int umajor(udev_t dev);
370udev_t makeudev(int x, int y);
371#endif /* !_SYS_SYSTM_H_ */