systm.h revision 54471
11541Srgrimes/*- 21541Srgrimes * Copyright (c) 1982, 1988, 1991, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * (c) UNIX System Laboratories, Inc. 51541Srgrimes * All or some portions of this file are derived from material licensed 61541Srgrimes * to the University of California by American Telephone and Telegraph 71541Srgrimes * Co. or Unix System Laboratories, Inc. and are reproduced herein with 81541Srgrimes * the permission of UNIX System Laboratories, Inc. 91541Srgrimes * 101541Srgrimes * Redistribution and use in source and binary forms, with or without 111541Srgrimes * modification, are permitted provided that the following conditions 121541Srgrimes * are met: 131541Srgrimes * 1. Redistributions of source code must retain the above copyright 141541Srgrimes * notice, this list of conditions and the following disclaimer. 151541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 161541Srgrimes * notice, this list of conditions and the following disclaimer in the 171541Srgrimes * documentation and/or other materials provided with the distribution. 181541Srgrimes * 3. All advertising materials mentioning features or use of this software 191541Srgrimes * must display the following acknowledgement: 201541Srgrimes * This product includes software developed by the University of 211541Srgrimes * California, Berkeley and its contributors. 221541Srgrimes * 4. Neither the name of the University nor the names of its contributors 231541Srgrimes * may be used to endorse or promote products derived from this software 241541Srgrimes * without specific prior written permission. 251541Srgrimes * 261541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 271541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 281541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 291541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 301541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 311541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 321541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 331541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 341541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 351541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 361541Srgrimes * SUCH DAMAGE. 371541Srgrimes * 3814508Shsu * @(#)systm.h 8.7 (Berkeley) 3/29/95 3950477Speter * $FreeBSD: head/sys/sys/systm.h 54471 1999-12-12 04:21:27Z green $ 401541Srgrimes */ 411541Srgrimes 422165Spaul#ifndef _SYS_SYSTM_H_ 432865Sbde#define _SYS_SYSTM_H_ 442165Spaul 4549043Salc#include <machine/atomic.h> 461549Srgrimes#include <machine/cpufunc.h> 4729683Sgibbs#include <sys/callout.h> 481549Srgrimes 4918883Sbdeextern int securelevel; /* system security level (see init(8)) */ 507090Sbde 517090Sbdeextern int cold; /* nonzero if we are doing a cold boot */ 521541Srgrimesextern const char *panicstr; /* panic message */ 5331337Sbdeextern int safepri; /* safe ipl when cold or panicing */ 541541Srgrimesextern char version[]; /* system version */ 551541Srgrimesextern char copyright[]; /* system copyright */ 561541Srgrimes 571541Srgrimesextern int nswap; /* size of swap space */ 581541Srgrimes 591541Srgrimesextern int selwait; /* select timeout address */ 601541Srgrimes 611541Srgrimesextern u_char curpriority; /* priority of current process */ 621541Srgrimes 631541Srgrimesextern int physmem; /* physical memory */ 641541Srgrimes 651541Srgrimesextern dev_t dumpdev; /* dump device */ 661541Srgrimesextern long dumplo; /* offset into dumpdev */ 671541Srgrimes 681541Srgrimesextern dev_t rootdev; /* root device */ 6936809Sbdeextern dev_t rootdevs[2]; /* possible root devices */ 7036809Sbdeextern char *rootdevnames[2]; /* names of possible root devices */ 711541Srgrimesextern struct vnode *rootvp; /* vnode equivalent to above */ 721541Srgrimes 731541Srgrimesextern int boothowto; /* reboot flags, from console subsystem */ 7415113Sbdeextern int bootverbose; /* nonzero to print verbose messages */ 751541Srgrimes 7642453Seivind#ifdef INVARIANTS /* The option is always available */ 7742453Seivind#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0) 7842408Seivind#else 7942453Seivind#define KASSERT(exp,msg) 8042408Seivind#endif 8142408Seivind 821541Srgrimes/* 831541Srgrimes * General function declarations. 841541Srgrimes */ 8530282Sphk 8633777Sbdestruct clockframe; 8730282Sphkstruct malloc_type; 8833777Sbdestruct proc; 8933777Sbdestruct timeval; 9033777Sbdestruct tty; 9133777Sbdestruct uio; 9230282Sphk 9316875Sbdevoid Debugger __P((const char *msg)); 941541Srgrimesint nullop __P((void)); 951541Srgrimesint eopnotsupp __P((void)); 9614508Shsuint einval __P((void)); 971541Srgrimesint seltrue __P((dev_t dev, int which, struct proc *p)); 983304Sphkint ureadc __P((int, struct uio *)); 9930282Sphkvoid *hashinit __P((int count, struct malloc_type *type, u_long *hashmask)); 10030282Sphkvoid *phashinit __P((int count, struct malloc_type *type, u_long *nentries)); 1011541Srgrimes 10217975Sbdevoid cpu_boot __P((int)); 10329683Sgibbsvoid cpu_rootconf __P((void)); 1041541Srgrimesvoid tablefull __P((const char *)); 10537614Sbdeint addlog __P((const char *, ...)) __printflike(1, 2); 10618556Sbdeint kvprintf __P((char const *, void (*)(int, void*), void *, int, 10737614Sbde _BSD_VA_LIST_)) __printflike(1, 0); 10849047Sdfrint log __P((int, const char *, ...)) __printflike(2, 3); 10929509Sbdevoid logwakeup __P((void)); 11037614Sbdeint printf __P((const char *, ...)) __printflike(1, 2); 11141479Sarchieint snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4); 11237614Sbdeint sprintf __P((char *buf, const char *, ...)) __printflike(2, 3); 11349047Sdfrint uprintf __P((const char *, ...)) __printflike(1, 2); 11449047Sdfrint vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0); 11541479Sarchieint vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0); 11638874Sacheint vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0); 11749047Sdfrint ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3); 11842680Smsmithint sscanf __P((const char *, char const *, ...)); 11942680Smsmithint vsscanf __P((const char *, char const *, _BSD_VA_LIST_)); 12054216Sarchielong strtol __P((const char *, char **, int)); 12154216Sarchieu_long strtoul __P((const char *, char **, int)); 12254216Sarchiequad_t strtoq __P((const char *, char **, int)); 12354216Sarchieu_quad_t strtouq __P((const char *, char **, int)); 1241541Srgrimes 1258215Sdgvoid bcopy __P((const void *from, void *to, size_t len)); 1268215Sdgvoid ovbcopy __P((const void *from, void *to, size_t len)); 12736735Sdfr#ifdef __i386__ 12813414Sphkextern void (*bzero) __P((void *buf, size_t len)); 12936735Sdfr#else 13036735Sdfrvoid bzero __P((void *buf, size_t len)); 13136735Sdfr#endif 1321541Srgrimes 1338215Sdgvoid *memcpy __P((void *to, const void *from, size_t len)); 1348215Sdg 13513456Sbdeint copystr __P((const void *kfaddr, void *kdaddr, size_t len, 13613456Sbde size_t *lencopied)); 13713456Sbdeint copyinstr __P((const void *udaddr, void *kaddr, size_t len, 13813456Sbde size_t *lencopied)); 13913456Sbdeint copyin __P((const void *udaddr, void *kaddr, size_t len)); 14013456Sbdeint copyout __P((const void *kaddr, void *udaddr, size_t len)); 1411541Srgrimes 14213456Sbdeint fubyte __P((const void *base)); 1431541Srgrimesint subyte __P((void *base, int byte)); 1441541Srgrimesint suibyte __P((void *base, int byte)); 14536735Sdfrlong fuword __P((const void *base)); 14636735Sdfrint suword __P((void *base, long word)); 14744495Sbdeint fusword __P((void *base)); 14844495Sbdeint susword __P((void *base, int word)); 1491541Srgrimes 1501541Srgrimesvoid realitexpire __P((void *)); 1511541Srgrimes 1521541Srgrimesvoid hardclock __P((struct clockframe *frame)); 15332390Sphkvoid softclock __P((void)); 1541541Srgrimesvoid statclock __P((struct clockframe *frame)); 1551541Srgrimes 1561541Srgrimesvoid startprofclock __P((struct proc *)); 1571541Srgrimesvoid stopprofclock __P((struct proc *)); 1581541Srgrimesvoid setstatclockrate __P((int hzrate)); 1591541Srgrimes 16040096Smsmithchar *getenv __P((char *name)); 16142706Smsmithint getenv_int __P((char *name, int *data)); 16252946Smjacobquad_t getenv_quad __P((char *name, quad_t *data)); 16340096Smsmithextern char *kern_envp; 16440096Smsmith 16531960Snate#ifdef APM_FIXUP_CALLTODO 16631960Snatevoid adjust_timeout_calltodo __P((struct timeval *time_change)); 16731960Snate#endif /* APM_FIXUP_CALLTODO */ 16831960Snate 1697109Sphk#include <sys/libkern.h> 1702112Swollman 1712112Swollman/* Initialize the world */ 17229509Sbdevoid consinit __P((void)); 17329509Sbdevoid cpu_initclocks __P((void)); 17429509Sbdevoid nchinit __P((void)); 17529509Sbdevoid usrinfoinit __P((void)); 17629509Sbdevoid vntblinit __P((void)); 1772112Swollman 1787090Sbde/* Finalize the world. */ 1797090Sbdevoid shutdown_nice __P((void)); 1807090Sbde 1817090Sbde/* 1827090Sbde * Kernel to clock driver interface. 1837090Sbde */ 1847090Sbdevoid inittodr __P((time_t base)); 1857090Sbdevoid resettodr __P((void)); 1867090Sbdevoid startrtclock __P((void)); 1877090Sbde 1882112Swollman/* Timeouts */ 18929509Sbdetypedef void timeout_t __P((void *)); /* timeout function type */ 19029683Sgibbs#define CALLOUT_HANDLE_INITIALIZER(handle) \ 19129683Sgibbs { NULL } 1922112Swollman 19329683Sgibbsvoid callout_handle_init __P((struct callout_handle *)); 19429683Sgibbsstruct callout_handle timeout __P((timeout_t *, void *, int)); 19529683Sgibbsvoid untimeout __P((timeout_t *, void *, struct callout_handle)); 1962165Spaul 19738130Sbde/* Interrupt management */ 19838130Sbde 19936735Sdfr#ifdef __i386__ 20038130Sbdevoid setdelayed __P((void)); 20138130Sbdevoid setsoftast __P((void)); 20238130Sbdevoid setsoftcambio __P((void)); 20338130Sbdevoid setsoftcamnet __P((void)); 20438130Sbdevoid setsoftclock __P((void)); 20538130Sbdevoid setsoftnet __P((void)); 20638130Sbdevoid setsofttty __P((void)); 20738130Sbdevoid setsoftvm __P((void)); 20838130Sbdevoid schedsoftcamnet __P((void)); 20938130Sbdevoid schedsoftcambio __P((void)); 21038130Sbdevoid schedsoftnet __P((void)); 21138130Sbdevoid schedsofttty __P((void)); 21238130Sbdevoid schedsoftvm __P((void)); 21338130Sbdeintrmask_t softclockpending __P((void)); 21438130Sbdevoid spl0 __P((void)); 21538130Sbdeintrmask_t splbio __P((void)); 21638130Sbdeintrmask_t splcam __P((void)); 21738130Sbdeintrmask_t splclock __P((void)); 21838130Sbdeintrmask_t splhigh __P((void)); 21938130Sbdeintrmask_t splimp __P((void)); 22038130Sbdeintrmask_t splnet __P((void)); 22138130Sbdeintrmask_t splsoftcam __P((void)); 22238130Sbdeintrmask_t splsoftcambio __P((void)); 22338130Sbdeintrmask_t splsoftcamnet __P((void)); 22438130Sbdeintrmask_t splsoftclock __P((void)); 22538130Sbdeintrmask_t splsofttty __P((void)); 22638130Sbdeintrmask_t splsoftvm __P((void)); 22738130Sbdeintrmask_t splstatclock __P((void)); 22838130Sbdeintrmask_t spltty __P((void)); 22938130Sbdeintrmask_t splvm __P((void)); 23038130Sbdevoid splx __P((intrmask_t ipl)); 23138130Sbdevoid splz __P((void)); 23238130Sbde#endif /* __i386__ */ 23326312Speter 23436735Sdfr#ifdef __alpha__ 23536735Sdfr#include <machine/ipl.h> 23636735Sdfr#endif 23736735Sdfr 23826312Speter/* 23926312Speter * XXX It's not clear how "machine independent" these will be yet, but 24026312Speter * they are used all over the place especially in pci drivers. We would 24126312Speter * have to modify lots of drivers since <machine/cpufunc.h> no longer 24226312Speter * implicitly causes these to be defined when it #included <machine/spl.h> 24326312Speter */ 24426312Speterextern intrmask_t bio_imask; /* group of interrupts masked with splbio() */ 24529683Sgibbsextern intrmask_t cam_imask; /* group of interrupts masked with splcam() */ 24626312Speterextern intrmask_t net_imask; /* group of interrupts masked with splimp() */ 24726312Speterextern intrmask_t stat_imask; /* interrupts masked with splstatclock() */ 24826312Speterextern intrmask_t tty_imask; /* group of interrupts masked with spltty() */ 24926312Speter 25026312Speter/* Read only */ 25127585Sbdeextern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */ 25226312Speterextern const intrmask_t softnet_imask; /* interrupt masked with splnet() */ 25326312Speterextern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */ 25426312Speter 25529509Sbde/* 25629509Sbde * Various callout lists. 25729509Sbde */ 25817658Sjulian 25929509Sbde/* Exit callout list declarations. */ 26029509Sbdetypedef void (*exitlist_fn) __P((struct proc *procp)); 26117658Sjulian 26229509Sbdeint at_exit __P((exitlist_fn function)); 26329509Sbdeint rm_at_exit __P((exitlist_fn function)); 26417658Sjulian 26529509Sbde/* Fork callout list declarations. */ 26629509Sbdetypedef void (*forklist_fn) __P((struct proc *parent, struct proc *child, 26729509Sbde int flags)); 26827997Sjulian 26929509Sbdeint at_fork __P((forklist_fn function)); 27029509Sbdeint rm_at_fork __P((forklist_fn function)); 27127997Sjulian 27229509Sbde/* 27329509Sbde * Not exactly a callout LIST, but a callout entry. 27429509Sbde * Allow an external module to define a hardware watchdog tickler. 27529509Sbde * Normally a process would do this, but there are times when the 27629509Sbde * kernel needs to be able to hold off the watchdog, when the process 27729509Sbde * is not active, e.g., when dumping core. 27829509Sbde */ 27929509Sbdetypedef void (*watchdog_tickle_fn) __P((void)); 28029509Sbde 28129509Sbdeextern watchdog_tickle_fn wdog_tickler; 28229509Sbde 28318884Sbde/* 28418884Sbde * Common `proc' functions are declared here so that proc.h can be included 28518884Sbde * less often. 28618884Sbde */ 28731333Sbdeint tsleep __P((void *chan, int pri, const char *wmesg, int timo)); 28841971Sdillonint asleep __P((void *chan, int pri, const char *wmesg, int timo)); 28941971Sdillonint await __P((int pri, int timo)); 29018884Sbdevoid wakeup __P((void *chan)); 29154471Sgreenvoid wakeup_one __P((void *chan)); 29218884Sbde 29347028Sphk/* 29447028Sphk * Common `dev_t' stuff are declared here to avoid #include poisoning 29547028Sphk */ 29647028Sphk 29747028Sphkint major(dev_t x); 29847028Sphkint minor(dev_t x); 29947028Sphkdev_t makedev(int x, int y); 30047028Sphkudev_t dev2udev(dev_t x); 30147028Sphkdev_t udev2dev(udev_t x, int b); 30247028Sphkint uminor(udev_t dev); 30347028Sphkint umajor(udev_t dev); 30448859Sphkudev_t makeudev(int x, int y); 3052865Sbde#endif /* !_SYS_SYSTM_H_ */ 306