Synchronize some of the machine-independant AMD64 bits.
[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 $
432417ed 40 * $DragonFly: src/sys/sys/systm.h,v 1.79 2008/07/11 11:59:44 swildner Exp $
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41 */
42
43#ifndef _SYS_SYSTM_H_
44#define _SYS_SYSTM_H_
45
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46#ifndef _KERNEL
47#error "This file should not be included by userland programs."
03d6a592 48#else
d9f3f6fa 49
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50#ifndef _MACHINE_TYPES_H_
51#include <machine/types.h>
52#endif
53#ifndef _MACHINE_STDARG_H_
54#include <machine/stdarg.h>
55#endif
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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 */
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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 */
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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
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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 */
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78extern int dumplo; /* OBSOLETE */
79extern u_int64_t dumplo64; /* block number into dumpdev, start of dump */
984263bc 80
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81extern cdev_t rootdev; /* root device */
82extern cdev_t rootdevs[2]; /* possible root devices */
984263bc 83extern char *rootdevnames[2]; /* names of possible root devices */
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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)*/
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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 */
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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 */
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100extern u_int cpu_feature2; /* CPUID2_* features */
101
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102extern int nfs_diskless_valid; /* NFS diskless params were obtained */
103extern vm_paddr_t Maxmem; /* Highest physical memory address in system */
527fddf7 104
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105#ifdef INVARIANTS /* The option is always available */
106#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
5ee2acaa 107#define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
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108#else
109#define KASSERT(exp,msg)
41c20dac 110#define KKASSERT(exp)
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111#endif
112
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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]
116
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117/*
118 * General function declarations.
119 */
120
88c4d2f6 121struct intrframe;
bf765287 122struct spinlock;
362e59be 123struct lwkt_serialize;
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124struct malloc_type;
125struct proc;
f1d1c3fa 126struct xwait;
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127struct timeval;
128struct tty;
129struct uio;
8ad65e08 130struct globaldata;
41c20dac 131struct thread;
4a22e893 132struct trapframe;
6bf59cd2 133struct user;
135d7199 134struct vmspace;
4e7c41c5 135struct savetls;
c8dfd00d 136struct krate;
984263bc 137
b153f746 138void Debugger (const char *msg);
801f17b9 139void backtrace(void);
b153f746 140void mi_gdinit (struct globaldata *gd, int cpu);
6bf59cd2 141void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
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142int dumpstatus (vm_offset_t addr, off_t count);
143int nullop (void);
b13267a5 144int seltrue (cdev_t dev, int which);
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145int ureadc (int, struct uio *);
146void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
147void *phashinit (int count, struct malloc_type *type, u_long *nentries);
148
4a22e893 149int cpu_sanitize_frame (struct trapframe *);
4e7c41c5 150int cpu_sanitize_tls (struct savetls *);
b402c633 151void cpu_mplock_contested(void);
06615ccb 152void cpu_spinlock_contested(void);
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153void cpu_halt (void);
154void cpu_reset (void);
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155void cpu_boot (int);
156void cpu_rootconf (void);
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157void cpu_vmspace_alloc(struct vmspace *);
158void cpu_vmspace_free(struct vmspace *);
4e7c41c5 159void set_user_TLS(void);
431d0fef 160void set_vkernel_fp(struct trapframe *);
460426e6 161int kvm_access_check(vm_offset_t, vm_offset_t, int);
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162
163vm_paddr_t kvtop(void *addr);
164int is_physical_memory (vm_offset_t addr);
165
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166extern uint32_t crc32_tab[];
167uint32_t crc32(const void *buf, size_t size);
432417ed 168uint32_t crc32_ext(const void *buf, size_t size, uint32_t ocrc);
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169void init_param1 (void);
170void init_param2 (int physpages);
171void tablefull (const char *);
379210cb 172int kvcprintf (char const *, void (*)(int, void*), void *, int,
e2565a42 173 __va_list) __printflike(1, 0);
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174int log (int, const char *, ...) __printflike(2, 3);
175void logwakeup (void);
176void log_console (struct uio *);
169276ba 177int kprintf (const char *, ...) __printflike(1, 2);
c8dfd00d 178void krateprintf (struct krate *, const char *, ...) __printflike(2, 3);
169276ba 179int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
169276ba 180int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
b153f746 181int uprintf (const char *, ...) __printflike(1, 2);
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182int kvprintf (const char *, __va_list) __printflike(1, 0);
183int kvsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
184int kvsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
b153f746 185int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
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186int ksscanf (const char *, char const *, ...);
187int kvsscanf (const char *, char const *, __va_list);
44a09dd6 188
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189long strtol (const char *, char **, int);
190u_long strtoul (const char *, char **, int);
191quad_t strtoq (const char *, char **, int);
192u_quad_t strtouq (const char *, char **, int);
984263bc 193
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194/*
195 * note: some functions commonly used by device drivers may be passed
196 * pointers to volatile storage, volatile set to avoid warnings.
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197 *
198 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
199 * explicitly not meant to be sophisticated.
200 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
201 * This routine is explicitly not meant to be sophisticated.
f15db79e 202 */
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203void bcopyb (const void *from, void *to, size_t len);
204void bcopyi (const void *from, void *to, size_t len);
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205void bcopy (volatile const void *from, volatile void *to, size_t len);
206void ovbcopy (const void *from, void *to, size_t len);
afaa1d56 207void bzero (volatile void *buf, size_t len);
b153f746 208void *memcpy (void *to, const void *from, size_t len);
984263bc 209
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210int copystr (const void *kfaddr, void *kdaddr, size_t len,
211 size_t *lencopied);
212int copyinstr (const void *udaddr, void *kaddr, size_t len,
213 size_t *lencopied);
214int copyin (const void *udaddr, void *kaddr, size_t len);
215int copyout (const void *kaddr, void *udaddr, size_t len);
984263bc 216
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217int fubyte (const void *base);
218int subyte (void *base, int byte);
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219long fuword (const void *base);
220int suword (void *base, long word);
221int fusword (void *base);
222int susword (void *base, int word);
984263bc 223
b153f746 224void realitexpire (void *);
f0f0df1c 225void DELAY(int usec);
dbcd0c9b 226void DRIVERSLEEP(int usec);
984263bc 227
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228void startprofclock (struct proc *);
229void stopprofclock (struct proc *);
230void setstatclockrate (int hzrate);
984263bc 231
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232/*
233 * Console I/O spinlocks - these typically also hard-disable interrupts
234 * for the duration.
235 */
236void cons_lock(void);
237void cons_unlock(void);
238
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239/*
240 * Kernel environment support functions and sundry.
241 */
bc01a404 242char *kgetenv (const char *name);
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243int ksetenv(const char *name, const char *value);
244int kunsetenv(const char *name);
245void kfreeenv(char *env);
246int ktestenv(const char *name);
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247int kgetenv_int (const char *name, int *data);
248int kgetenv_string (const char *name, char *data, int size);
249int kgetenv_quad (const char *name, quad_t *data);
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250extern char *kern_envp;
251
252#ifdef APM_FIXUP_CALLTODO
b153f746 253void adjust_timeout_calltodo (struct timeval *time_change);
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254#endif /* APM_FIXUP_CALLTODO */
255
256#include <sys/libkern.h>
257
258/* Initialize the world */
a8a86718 259void mi_startup (void);
ba39e2e0 260void cpu_initclocks (void *arg __unused);
b153f746 261void nchinit (void);
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262
263/* Finalize the world. */
b153f746 264void shutdown_nice (int);
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265
266/*
267 * Kernel to clock driver interface.
268 */
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269void inittodr (time_t base);
270void resettodr (void);
271void startrtclock (void);
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272
273/* Timeouts */
b153f746 274typedef void timeout_t (void *); /* timeout function type */
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275
276/* Interrupt management */
277
278/*
279 * For the alpha arch, some of these functions are static __inline, and
280 * the others should be.
281 */
282#ifdef __i386__
b153f746 283void setdelayed (void);
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284void setsoftcambio (void);
285void setsoftcamnet (void);
0fb6ec96 286void setsoftunused02 (void);
b153f746 287void setsoftcrypto (void);
0fb6ec96 288void setsoftunused01 (void);
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289void setsofttty (void);
290void setsoftvm (void);
291void setsofttq (void);
b153f746 292void schedsofttty (void);
b153f746 293void splz (void);
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294#endif /* __i386__ */
295
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296/*
297 * Various callout lists.
298 */
299
300/* Exit callout list declarations. */
b153f746 301typedef void (*exitlist_fn) (struct thread *td);
984263bc 302
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303int at_exit (exitlist_fn function);
304int rm_at_exit (exitlist_fn function);
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305
306/* Fork callout list declarations. */
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307typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
308 int flags);
984263bc 309
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310int at_fork (forklist_fn function);
311int rm_at_fork (forklist_fn function);
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312
313/*
314 * Not exactly a callout LIST, but a callout entry.
315 * Allow an external module to define a hardware watchdog tickler.
316 * Normally a process would do this, but there are times when the
317 * kernel needs to be able to hold off the watchdog, when the process
318 * is not active, e.g., when dumping core.
319 */
b153f746 320typedef void (*watchdog_tickle_fn) (void);
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321
322extern watchdog_tickle_fn wdog_tickler;
323
324/*
325 * Common `proc' functions are declared here so that proc.h can be included
326 * less often.
327 */
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328int tsleep (void *, int, const char *, int);
329int msleep (void *, struct spinlock *, int, const char *, int);
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330int serialize_sleep(void *, struct lwkt_serialize *, int,
331 const char *, int);
16523a43 332void tsleep_interlock (void *chan);
a22c590e 333int lwkt_sleep (const char *, int);
9a379a4a 334void tstop (void);
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335void wakeup (void *chan);
336void wakeup_one (void *chan);
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337void wakeup_mycpu (void *chan);
338void wakeup_mycpu_one (void *chan);
339void wakeup_oncpu (struct globaldata *gd, void *chan);
340void wakeup_oncpu_one (struct globaldata *gd, void *chan);
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341void wakeup_domain (void *chan, int domain);
342void wakeup_domain_one (void *chan, int domain);
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343
344/*
b13267a5 345 * Common `cdev_t' stuff are declared here to avoid #include poisoning
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346 */
347
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348int major(cdev_t x);
349int minor(cdev_t x);
350udev_t dev2udev(cdev_t x);
351cdev_t udev2dev(udev_t x, int b);
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352int uminor(udev_t dev);
353int umajor(udev_t dev);
354udev_t makeudev(int x, int y);
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355
356#endif /* _KERNEL */
984263bc 357#endif /* !_SYS_SYSTM_H_ */