systm.h revision 56079
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 56079 2000-01-16 02:10:21Z jmb $ 401541Srgrimes */ 411541Srgrimes 422165Spaul#ifndef _SYS_SYSTM_H_ 432865Sbde#define _SYS_SYSTM_H_ 442165Spaul 4549043Salc#include <machine/atomic.h> 461549Srgrimes#include <machine/cpufunc.h> 4756079Sjmb#include <machine/ipl.h> 4829683Sgibbs#include <sys/callout.h> 491549Srgrimes 5018883Sbdeextern int securelevel; /* system security level (see init(8)) */ 517090Sbde 527090Sbdeextern int cold; /* nonzero if we are doing a cold boot */ 531541Srgrimesextern const char *panicstr; /* panic message */ 5431337Sbdeextern int safepri; /* safe ipl when cold or panicing */ 551541Srgrimesextern char version[]; /* system version */ 561541Srgrimesextern char copyright[]; /* system copyright */ 571541Srgrimes 581541Srgrimesextern int nswap; /* size of swap space */ 591541Srgrimes 601541Srgrimesextern int selwait; /* select timeout address */ 611541Srgrimes 621541Srgrimesextern u_char curpriority; /* priority of current process */ 631541Srgrimes 641541Srgrimesextern int physmem; /* physical memory */ 651541Srgrimes 661541Srgrimesextern dev_t dumpdev; /* dump device */ 671541Srgrimesextern long dumplo; /* offset into dumpdev */ 681541Srgrimes 691541Srgrimesextern dev_t rootdev; /* root device */ 7036809Sbdeextern dev_t rootdevs[2]; /* possible root devices */ 7136809Sbdeextern char *rootdevnames[2]; /* names of possible root devices */ 721541Srgrimesextern struct vnode *rootvp; /* vnode equivalent to above */ 731541Srgrimes 741541Srgrimesextern int boothowto; /* reboot flags, from console subsystem */ 7515113Sbdeextern int bootverbose; /* nonzero to print verbose messages */ 761541Srgrimes 7742453Seivind#ifdef INVARIANTS /* The option is always available */ 7842453Seivind#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0) 7956079Sjmb#define SPLSTRINGIZE(a) #a 8056079Sjmb#define SPLASSERT(level, msg) \ 8156079Sjmb KASSERT(is_spl##level(), ("%s: not spl%s, cpl == 0x%08x\n", \ 8256079Sjmb (msg), SPLSTRINGIZE(level), cpl)) 8342408Seivind#else 8442453Seivind#define KASSERT(exp,msg) 8556079Sjmb#define SPLASSERT(level, msg) 8642408Seivind#endif 8742408Seivind 881541Srgrimes/* 891541Srgrimes * General function declarations. 901541Srgrimes */ 9130282Sphk 9233777Sbdestruct clockframe; 9330282Sphkstruct malloc_type; 9433777Sbdestruct proc; 9533777Sbdestruct timeval; 9633777Sbdestruct tty; 9733777Sbdestruct uio; 9830282Sphk 9916875Sbdevoid Debugger __P((const char *msg)); 1001541Srgrimesint nullop __P((void)); 1011541Srgrimesint eopnotsupp __P((void)); 10214508Shsuint einval __P((void)); 1031541Srgrimesint seltrue __P((dev_t dev, int which, struct proc *p)); 1043304Sphkint ureadc __P((int, struct uio *)); 10530282Sphkvoid *hashinit __P((int count, struct malloc_type *type, u_long *hashmask)); 10630282Sphkvoid *phashinit __P((int count, struct malloc_type *type, u_long *nentries)); 1071541Srgrimes 10817975Sbdevoid cpu_boot __P((int)); 10929683Sgibbsvoid cpu_rootconf __P((void)); 1101541Srgrimesvoid tablefull __P((const char *)); 11137614Sbdeint addlog __P((const char *, ...)) __printflike(1, 2); 11218556Sbdeint kvprintf __P((char const *, void (*)(int, void*), void *, int, 11337614Sbde _BSD_VA_LIST_)) __printflike(1, 0); 11449047Sdfrint log __P((int, const char *, ...)) __printflike(2, 3); 11529509Sbdevoid logwakeup __P((void)); 11637614Sbdeint printf __P((const char *, ...)) __printflike(1, 2); 11741479Sarchieint snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4); 11837614Sbdeint sprintf __P((char *buf, const char *, ...)) __printflike(2, 3); 11949047Sdfrint uprintf __P((const char *, ...)) __printflike(1, 2); 12049047Sdfrint vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0); 12141479Sarchieint vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0); 12238874Sacheint vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0); 12349047Sdfrint ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3); 12442680Smsmithint sscanf __P((const char *, char const *, ...)); 12542680Smsmithint vsscanf __P((const char *, char const *, _BSD_VA_LIST_)); 12654216Sarchielong strtol __P((const char *, char **, int)); 12754216Sarchieu_long strtoul __P((const char *, char **, int)); 12854216Sarchiequad_t strtoq __P((const char *, char **, int)); 12954216Sarchieu_quad_t strtouq __P((const char *, char **, int)); 1301541Srgrimes 1318215Sdgvoid bcopy __P((const void *from, void *to, size_t len)); 1328215Sdgvoid ovbcopy __P((const void *from, void *to, size_t len)); 13356079Sjmb 13436735Sdfr#ifdef __i386__ 13513414Sphkextern void (*bzero) __P((void *buf, size_t len)); 13636735Sdfr#else 13736735Sdfrvoid bzero __P((void *buf, size_t len)); 13836735Sdfr#endif 1391541Srgrimes 1408215Sdgvoid *memcpy __P((void *to, const void *from, size_t len)); 1418215Sdg 14213456Sbdeint copystr __P((const void *kfaddr, void *kdaddr, size_t len, 14313456Sbde size_t *lencopied)); 14413456Sbdeint copyinstr __P((const void *udaddr, void *kaddr, size_t len, 14513456Sbde size_t *lencopied)); 14613456Sbdeint copyin __P((const void *udaddr, void *kaddr, size_t len)); 14713456Sbdeint copyout __P((const void *kaddr, void *udaddr, size_t len)); 1481541Srgrimes 14913456Sbdeint fubyte __P((const void *base)); 1501541Srgrimesint subyte __P((void *base, int byte)); 1511541Srgrimesint suibyte __P((void *base, int byte)); 15236735Sdfrlong fuword __P((const void *base)); 15336735Sdfrint suword __P((void *base, long word)); 15444495Sbdeint fusword __P((void *base)); 15544495Sbdeint susword __P((void *base, int word)); 1561541Srgrimes 1571541Srgrimesvoid realitexpire __P((void *)); 1581541Srgrimes 1591541Srgrimesvoid hardclock __P((struct clockframe *frame)); 16032390Sphkvoid softclock __P((void)); 1611541Srgrimesvoid statclock __P((struct clockframe *frame)); 1621541Srgrimes 1631541Srgrimesvoid startprofclock __P((struct proc *)); 1641541Srgrimesvoid stopprofclock __P((struct proc *)); 1651541Srgrimesvoid setstatclockrate __P((int hzrate)); 1661541Srgrimes 16740096Smsmithchar *getenv __P((char *name)); 16842706Smsmithint getenv_int __P((char *name, int *data)); 16952946Smjacobquad_t getenv_quad __P((char *name, quad_t *data)); 17040096Smsmithextern char *kern_envp; 17140096Smsmith 17231960Snate#ifdef APM_FIXUP_CALLTODO 17331960Snatevoid adjust_timeout_calltodo __P((struct timeval *time_change)); 17431960Snate#endif /* APM_FIXUP_CALLTODO */ 17531960Snate 1767109Sphk#include <sys/libkern.h> 1772112Swollman 1782112Swollman/* Initialize the world */ 17929509Sbdevoid consinit __P((void)); 18029509Sbdevoid cpu_initclocks __P((void)); 18129509Sbdevoid nchinit __P((void)); 18229509Sbdevoid usrinfoinit __P((void)); 18329509Sbdevoid vntblinit __P((void)); 1842112Swollman 1857090Sbde/* Finalize the world. */ 1867090Sbdevoid shutdown_nice __P((void)); 1877090Sbde 1887090Sbde/* 1897090Sbde * Kernel to clock driver interface. 1907090Sbde */ 1917090Sbdevoid inittodr __P((time_t base)); 1927090Sbdevoid resettodr __P((void)); 1937090Sbdevoid startrtclock __P((void)); 1947090Sbde 1952112Swollman/* Timeouts */ 19629509Sbdetypedef void timeout_t __P((void *)); /* timeout function type */ 19729683Sgibbs#define CALLOUT_HANDLE_INITIALIZER(handle) \ 19829683Sgibbs { NULL } 1992112Swollman 20029683Sgibbsvoid callout_handle_init __P((struct callout_handle *)); 20129683Sgibbsstruct callout_handle timeout __P((timeout_t *, void *, int)); 20229683Sgibbsvoid untimeout __P((timeout_t *, void *, struct callout_handle)); 2032165Spaul 20438130Sbde/* Interrupt management */ 20538130Sbde 20636735Sdfr#ifdef __i386__ 20738130Sbdevoid setdelayed __P((void)); 20838130Sbdevoid setsoftast __P((void)); 20938130Sbdevoid setsoftcambio __P((void)); 21038130Sbdevoid setsoftcamnet __P((void)); 21138130Sbdevoid setsoftclock __P((void)); 21238130Sbdevoid setsoftnet __P((void)); 21338130Sbdevoid setsofttty __P((void)); 21438130Sbdevoid setsoftvm __P((void)); 21538130Sbdevoid schedsoftcamnet __P((void)); 21638130Sbdevoid schedsoftcambio __P((void)); 21738130Sbdevoid schedsoftnet __P((void)); 21838130Sbdevoid schedsofttty __P((void)); 21938130Sbdevoid schedsoftvm __P((void)); 22038130Sbdeintrmask_t softclockpending __P((void)); 22138130Sbdevoid spl0 __P((void)); 22238130Sbdeintrmask_t splbio __P((void)); 22338130Sbdeintrmask_t splcam __P((void)); 22438130Sbdeintrmask_t splclock __P((void)); 22538130Sbdeintrmask_t splhigh __P((void)); 22638130Sbdeintrmask_t splimp __P((void)); 22738130Sbdeintrmask_t splnet __P((void)); 22838130Sbdeintrmask_t splsoftcam __P((void)); 22938130Sbdeintrmask_t splsoftcambio __P((void)); 23038130Sbdeintrmask_t splsoftcamnet __P((void)); 23138130Sbdeintrmask_t splsoftclock __P((void)); 23238130Sbdeintrmask_t splsofttty __P((void)); 23338130Sbdeintrmask_t splsoftvm __P((void)); 23438130Sbdeintrmask_t splstatclock __P((void)); 23538130Sbdeintrmask_t spltty __P((void)); 23638130Sbdeintrmask_t splvm __P((void)); 23756079Sjmb#if defined (INVARIANT_SUPPORT) 23856079Sjmb/* 23956079Sjmb * The Alpha has all of these as static __inline. 24056079Sjmb */ 24156079Sjmbint is_splbio __P((void)); 24256079Sjmbint is_splcam __P((void)); 24356079Sjmbint is_splclock __P((void)); 24456079Sjmbint is_splhigh __P((void)); 24556079Sjmbint is_splimp __P((void)); 24656079Sjmbint is_splnet __P((void)); 24756079Sjmbint is_splsoftcam __P((void)); 24856079Sjmbint is_splsoftcambio __P((void)); 24956079Sjmbint is_splsoftcamnet __P((void)); 25056079Sjmbint is_splsoftclock __P((void)); 25156079Sjmbint is_splsofttty __P((void)); 25256079Sjmbint is_splsoftvm __P((void)); 25356079Sjmbint is_splstatclock __P((void)); 25456079Sjmbint is_spltty __P((void)); 25556079Sjmbint is_splvm __P((void)); 25656079Sjmb#endif /* INVARIANT_SUPPORT */ 25738130Sbdevoid splx __P((intrmask_t ipl)); 25838130Sbdevoid splz __P((void)); 25938130Sbde#endif /* __i386__ */ 26026312Speter 26136735Sdfr#ifdef __alpha__ 26236735Sdfr#include <machine/ipl.h> 26336735Sdfr#endif 26436735Sdfr 26526312Speter/* 26626312Speter * XXX It's not clear how "machine independent" these will be yet, but 26726312Speter * they are used all over the place especially in pci drivers. We would 26826312Speter * have to modify lots of drivers since <machine/cpufunc.h> no longer 26926312Speter * implicitly causes these to be defined when it #included <machine/spl.h> 27026312Speter */ 27126312Speterextern intrmask_t bio_imask; /* group of interrupts masked with splbio() */ 27229683Sgibbsextern intrmask_t cam_imask; /* group of interrupts masked with splcam() */ 27326312Speterextern intrmask_t net_imask; /* group of interrupts masked with splimp() */ 27426312Speterextern intrmask_t stat_imask; /* interrupts masked with splstatclock() */ 27526312Speterextern intrmask_t tty_imask; /* group of interrupts masked with spltty() */ 27626312Speter 27726312Speter/* Read only */ 27827585Sbdeextern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */ 27926312Speterextern const intrmask_t softnet_imask; /* interrupt masked with splnet() */ 28026312Speterextern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */ 28126312Speter 28229509Sbde/* 28329509Sbde * Various callout lists. 28429509Sbde */ 28517658Sjulian 28629509Sbde/* Exit callout list declarations. */ 28729509Sbdetypedef void (*exitlist_fn) __P((struct proc *procp)); 28817658Sjulian 28929509Sbdeint at_exit __P((exitlist_fn function)); 29029509Sbdeint rm_at_exit __P((exitlist_fn function)); 29117658Sjulian 29229509Sbde/* Fork callout list declarations. */ 29329509Sbdetypedef void (*forklist_fn) __P((struct proc *parent, struct proc *child, 29429509Sbde int flags)); 29527997Sjulian 29629509Sbdeint at_fork __P((forklist_fn function)); 29729509Sbdeint rm_at_fork __P((forklist_fn function)); 29827997Sjulian 29929509Sbde/* 30029509Sbde * Not exactly a callout LIST, but a callout entry. 30129509Sbde * Allow an external module to define a hardware watchdog tickler. 30229509Sbde * Normally a process would do this, but there are times when the 30329509Sbde * kernel needs to be able to hold off the watchdog, when the process 30429509Sbde * is not active, e.g., when dumping core. 30529509Sbde */ 30629509Sbdetypedef void (*watchdog_tickle_fn) __P((void)); 30729509Sbde 30829509Sbdeextern watchdog_tickle_fn wdog_tickler; 30929509Sbde 31018884Sbde/* 31118884Sbde * Common `proc' functions are declared here so that proc.h can be included 31218884Sbde * less often. 31318884Sbde */ 31431333Sbdeint tsleep __P((void *chan, int pri, const char *wmesg, int timo)); 31541971Sdillonint asleep __P((void *chan, int pri, const char *wmesg, int timo)); 31641971Sdillonint await __P((int pri, int timo)); 31718884Sbdevoid wakeup __P((void *chan)); 31854471Sgreenvoid wakeup_one __P((void *chan)); 31918884Sbde 32047028Sphk/* 32147028Sphk * Common `dev_t' stuff are declared here to avoid #include poisoning 32247028Sphk */ 32347028Sphk 32447028Sphkint major(dev_t x); 32547028Sphkint minor(dev_t x); 32647028Sphkdev_t makedev(int x, int y); 32747028Sphkudev_t dev2udev(dev_t x); 32847028Sphkdev_t udev2dev(udev_t x, int b); 32947028Sphkint uminor(udev_t dev); 33047028Sphkint umajor(udev_t dev); 33148859Sphkudev_t makeudev(int x, int y); 3322865Sbde#endif /* !_SYS_SYSTM_H_ */ 333