/*- * Copyright (c) 1995 Terrence R. Lambert * All rights reserved. * * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * (c) UNIX System Laboratories, Inc. * All or some portions of this file are derived from material licensed * to the University of California by American Telephone and Telegraph * Co. or Unix System Laboratories, Inc. and are reproduced herein with * the permission of UNIX System Laboratories, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)kernel.h 8.3 (Berkeley) 1/21/94 * $FreeBSD: src/sys/sys/kernel.h,v 1.63.2.9 2002/07/02 23:00:30 archie Exp $ * $DragonFly: src/sys/sys/kernel.h,v 1.10 2004/03/01 06:33:19 dillon Exp $ */ #ifndef _SYS_KERNEL_H_ #define _SYS_KERNEL_H_ #include #ifdef _KERNEL /* for intrhook below */ #include /* Global variables for the kernel. */ /* 1.1 */ extern unsigned long hostid; extern char hostname[MAXHOSTNAMELEN]; extern int hostnamelen; extern char domainname[MAXHOSTNAMELEN]; extern int domainnamelen; extern char kernelname[MAXPATHLEN]; /* 1.2 */ extern struct timespec boottime; extern struct timespec basetime; extern struct timezone tz; /* XXX */ extern int tick; /* usec per tick (1000000 / hz) */ extern int tickadj; /* "standard" clock skew, us./tick */ extern int hz; /* system clock's frequency */ extern int psratio; /* ratio: prof / stat */ extern int stathz; /* statistics clock's frequency */ extern int profhz; /* profiling clock's frequency */ extern int ticks; extern int lbolt; /* once a second sleep address */ extern int tickdelta; /* make this correction */ extern long timedelta; /* until this aggregate is exhausted */ extern int tickpll; /* scaled tick adjustment */ #endif /* _KERNEL */ /* * Enumerated types for known system startup interfaces. * * Startup occurs in ascending numeric order; the list entries are * sorted prior to attempting startup to guarantee order. Items * of the same level are arbitrated for order based on the 'order' * element. * * These numbers are arbitrary and are chosen ONLY for ordering; the * enumeration values are explicit rather than implicit to provide * for binary compatibility with inserted elements. * * The SI_SUB_RUN_SCHEDULER value must have the highest lexical value. * * The SI_SUB_CONSOLE and SI_SUB_SWAP values represent values used by * the BSD 4.4Lite but not by FreeBSD; they are maintained in dependent * order to support porting. * * The SI_SUB_PROTO_BEGIN and SI_SUB_PROTO_END bracket a range of * initializations to take place at splimp(). This is a historical * wart that should be removed -- probably running everything at * splimp() until the first init that doesn't want it is the correct * fix. They are currently present to ensure historical behavior. */ enum sysinit_sub_id { SI_SUB_DUMMY = 0x0000000, /* not executed; for linker*/ SI_SUB_DONE = 0x0000001, /* processed*/ SI_SUB_CONSOLE = 0x0800000, /* console*/ SI_SUB_COPYRIGHT = 0x0800001, /* first use of console*/ SI_SUB_TUNABLES = 0x0700000, /* establish tunable values */ SI_SUB_VM = 0x1000000, /* virtual memory system init*/ SI_SUB_KMEM = 0x1800000, /* kernel memory*/ SI_SUB_KVM_RSRC = 0x1A00000, /* kvm operational limits*/ SI_SUB_CPU = 0x1e00000, /* CPU resource(s)*/ SI_SUB_KLD = 0x1f00000, /* KLD and module setup */ SI_SUB_INTRINSIC = 0x2000000, /* proc 0*/ SI_SUB_VM_CONF = 0x2100000, /* config VM, set limits*/ SI_SUB_RUN_QUEUE = 0x2200000, /* the run queue*/ SI_SUB_CREATE_INIT = 0x2300000, /* create the init process */ SI_SUB_MBUF = 0x2380000, /* mbuf subsystem */ SI_SUB_LEAVE_CRIT = 0x23c0000, /* allow interrupt operation */ SI_SUB_DRIVERS = 0x2400000, /* Let Drivers initialize */ SI_SUB_CONFIGURE = 0x3800000, /* Configure devices */ SI_SUB_VFS = 0x4000000, /* virtual file system*/ SI_SUB_CLOCKS = 0x4800000, /* real time and stat clocks*/ SI_SUB_FINISH_SMP = 0x5000000, /* finish setting up cpus */ SI_SUB_CLIST = 0x5800000, /* clists*/ SI_SUB_SYSV_SHM = 0x6400000, /* System V shared memory*/ SI_SUB_SYSV_SEM = 0x6800000, /* System V semaphores*/ SI_SUB_SYSV_MSG = 0x6C00000, /* System V message queues*/ SI_SUB_P1003_1B = 0x6E00000, /* P1003.1B realtime */ SI_SUB_PSEUDO = 0x7000000, /* pseudo devices*/ SI_SUB_EXEC = 0x7400000, /* execve() handlers */ SI_SUB_PROTO_BEGIN = 0x8000000, /* XXX: set splimp (kludge)*/ SI_SUB_PROTO_IF = 0x8400000, /* interfaces*/ SI_SUB_PROTO_DOMAIN = 0x8800000, /* domains (address families?)*/ SI_SUB_PROTO_END = 0x8ffffff, /* XXX: set splx (kludge)*/ SI_SUB_KPROF = 0x9000000, /* kernel profiling*/ SI_SUB_KICK_SCHEDULER = 0xa000000, /* start the timeout events*/ SI_SUB_INT_CONFIG_HOOKS = 0xa800000, /* Interrupts enabled config */ SI_SUB_ROOT_CONF = 0xb000000, /* Find root devices */ SI_SUB_DUMP_CONF = 0xb200000, /* Find dump devices */ SI_SUB_RAID = 0xb300000, /* Configure vinum */ SI_SUB_MOUNT_ROOT = 0xb400000, /* root mount*/ SI_SUB_SWAP = 0xc000000, /* swap*/ SI_SUB_INTRINSIC_POST = 0xd000000, /* proc 0 cleanup*/ SI_SUB_KTHREAD_INIT = 0xe000000, /* init process*/ SI_SUB_KTHREAD_PAGE = 0xe400000, /* pageout daemon*/ SI_SUB_KTHREAD_VM = 0xe800000, /* vm daemon*/ SI_SUB_KTHREAD_BUF = 0xea00000, /* buffer daemon*/ SI_SUB_KTHREAD_UPDATE = 0xec00000, /* update daemon*/ SI_SUB_KTHREAD_IDLE = 0xee00000, /* idle procs*/ SI_SUB_SMP = 0xf000000, /* idle procs*/ SI_SUB_RUN_SCHEDULER = 0xfffffff /* scheduler: no return*/ }; /* * Some enumerated orders; "ANY" sorts last. */ enum sysinit_elem_order { SI_ORDER_FIRST = 0x0000000, /* first*/ SI_ORDER_SECOND = 0x0000001, /* second*/ SI_ORDER_THIRD = 0x0000002, /* third*/ SI_ORDER_MIDDLE = 0x1000000, /* somewhere in the middle */ SI_ORDER_ANY = 0xfffffff /* last*/ }; /* * A system initialization call instance * * At the moment there is one instance of sysinit. We probably do not * want two which is why this code is if'd out, but we definitely want * to discern SYSINIT's which take non-constant data pointers and * SYSINIT's which take constant data pointers, * * The C_* macros take functions expecting const void * arguments * while the non-C_* macros take functions expecting just void * arguments. * * With -Wcast-qual on, the compiler issues warnings: * - if we pass non-const data or functions taking non-const data * to a C_* macro. * * - if we pass const data to the normal macros * * However, no warning is issued if we pass a function taking const data * through a normal non-const macro. This is ok because the function is * saying it won't modify the data so we don't care whether the data is * modifiable or not. */ typedef void (*sysinit_nfunc_t) (void *); typedef void (*sysinit_cfunc_t) (const void *); struct sysinit { unsigned int subsystem; /* subsystem identifier*/ unsigned int order; /* init order within subsystem*/ sysinit_cfunc_t func; /* function */ const void *udata; /* multiplexer/argument */ }; /* * Default: no special processing * * The C_ version of SYSINIT is for data pointers to const * data ( and functions taking data pointers to const data ). * At the moment it is no different from SYSINIT and thus * still results in warnings. * * The casts are necessary to have the compiler produce the * correct warnings when -Wcast-qual is used. * */ #define C_SYSINIT(uniquifier, subsystem, order, func, ident) \ static struct sysinit uniquifier ## _sys_init = { \ subsystem, \ order, \ func, \ ident \ }; \ DATA_SET(sysinit_set,uniquifier ## _sys_init); #define SYSINIT(uniquifier, subsystem, order, func, ident) \ C_SYSINIT(uniquifier, subsystem, order, \ (sysinit_cfunc_t)(sysinit_nfunc_t)func, (void *)ident) /* * Called on module unload: no special processing */ #define C_SYSUNINIT(uniquifier, subsystem, order, func, ident) \ static struct sysinit uniquifier ## _sys_uninit = { \ subsystem, \ order, \ func, \ ident \ }; \ DATA_SET(sysuninit_set,uniquifier ## _sys_uninit) #define SYSUNINIT(uniquifier, subsystem, order, func, ident) \ C_SYSUNINIT(uniquifier, subsystem, order, \ (sysinit_cfunc_t)(sysinit_nfunc_t)func, (void *)ident) void sysinit_add (struct sysinit **, struct sysinit **); /* * Infrastructure for tunable 'constants'. Value may be specified at compile * time or kernel load time. Rules relating tunables together can be placed * in a SYSINIT function at SI_SUB_TUNABLES with SI_ORDER_LAST. */ extern void tunable_int_init(void *); struct tunable_int { const char *path; int *var; }; #define TUNABLE_INT(path, var) \ _TUNABLE_INT((path), (var), __LINE__) #define _TUNABLE_INT(path, var, line) \ __TUNABLE_INT((path), (var), line) #define __TUNABLE_INT(path, var, line) \ static struct tunable_int __tunable_int_ ## line = { \ path, \ var, \ }; \ SYSINIT(__Tunable_init_ ## line, SI_SUB_TUNABLES, SI_ORDER_MIDDLE, \ tunable_int_init, &__tunable_int_ ## line) #define TUNABLE_INT_FETCH(path, var) getenv_int((path), (var)) /* Backwards compatibility with the old deprecated TUNABLE_INT_DECL API */ #define TUNABLE_INT_DECL(path, defval, var) \ static void __Tunable_ ## var (void *ignored) \ { \ (var) = (defval); \ TUNABLE_INT_FETCH((path), &(var)); \ } \ SYSINIT(__Tunable_init_ ## var, SI_SUB_TUNABLES, SI_ORDER_MIDDLE, __Tunable_ ## var , NULL); extern void tunable_quad_init(void *); struct tunable_quad { const char *path; quad_t *var; }; #define TUNABLE_QUAD(path, var) \ _TUNABLE_QUAD((path), (var), __LINE__) #define _TUNABLE_QUAD(path, var, line) \ __TUNABLE_QUAD((path), (var), line) #define __TUNABLE_QUAD(path, var, line) \ static struct tunable_quad __tunable_quad_ ## line = { \ path, \ var, \ }; \ SYSINIT(__Tunable_init_ ## line, SI_SUB_TUNABLES, SI_ORDER_MIDDLE, \ tunable_quad_init, &__tunable_quad_ ## line) #define TUNABLE_QUAD_FETCH(path, var) getenv_quad((path), (var)) extern void tunable_str_init(void *); struct tunable_str { const char *path; char *var; int size; }; #define TUNABLE_STR(path, var, size) \ _TUNABLE_STR((path), (var), (size), __LINE__) #define _TUNABLE_STR(path, var, size, line) \ __TUNABLE_STR((path), (var), (size), line) #define __TUNABLE_STR(path, var, size, line) \ static struct tunable_str __tunable_str_ ## line = { \ path, \ var, \ size, \ }; \ SYSINIT(__Tunable_init_ ## line, SI_SUB_TUNABLES, SI_ORDER_MIDDLE, \ tunable_str_init, &__tunable_str_ ## line) #define TUNABLE_STR_FETCH(path, var, size) \ getenv_string((path), (var), (size)) /* * Compatibility. To be deprecated after LKM is removed. */ #include #define PSEUDO_SET(sym, name) \ static int name ## _modevent(module_t mod, int type, void *data) \ { \ void (*initfunc)(void *) = (void (*)(void *))data; \ switch (type) { \ case MOD_LOAD: \ /* printf(#name " module load\n"); */ \ initfunc(NULL); \ break; \ case MOD_UNLOAD: \ printf(#name " module unload - not possible for this module type\n"); \ return EINVAL; \ } \ return 0; \ } \ static moduledata_t name ## _mod = { \ #name, \ name ## _modevent, \ (void *)sym \ }; \ DECLARE_MODULE(name, name ## _mod, SI_SUB_PSEUDO, SI_ORDER_ANY) extern struct linker_set execsw_set; struct intr_config_hook { TAILQ_ENTRY(intr_config_hook) ich_links; void (*ich_func) (void *); void *ich_arg; }; int config_intrhook_establish (struct intr_config_hook *); void config_intrhook_disestablish (struct intr_config_hook *); #endif /* !_SYS_KERNEL_H_*/