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53ac6efbd8
That's EVERY SINGLE driver that has an entry in conf.c.. my next trick will be to define cdevsw[] and bdevsw[] as empty arrays and remove all those DAMNED defines as well.. Each of these drivers has a SYSINIT linker set entry that comes in very early.. and asks teh driver to add it's own entry to the two devsw[] tables. some slight reworking of the commits from yesterday (added the SYSINIT stuff and some usually wrong but token DEVFS entries to all these devices. BTW does anyone know where the 'ata' entries in conf.c actually reside? seems we don't actually have a 'ataopen() etc... If you want to add a new device in conf.c please make sure I know so I can keep it up to date too.. as before, this is all dependent on #if defined(JREMOD) (and #ifdef DEVFS in parts)
270 lines
9.6 KiB
C
270 lines
9.6 KiB
C
/*-
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* Copyright (c) 1995 Terrence R. Lambert
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* All rights reserved.
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*
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kernel.h 8.3 (Berkeley) 1/21/94
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* $Id: kernel.h,v 1.16 1995/11/20 12:08:08 phk Exp $
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*/
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#ifndef _SYS_KERNEL_H_
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#define _SYS_KERNEL_H_
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/* Global variables for the kernel. */
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/* 1.1 */
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extern long hostid;
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extern char hostname[MAXHOSTNAMELEN];
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extern int hostnamelen;
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extern char domainname[MAXHOSTNAMELEN];
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extern int domainnamelen;
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extern char kernelname[MAXPATHLEN];
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/* 1.2 */
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extern volatile struct timeval mono_time;
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extern struct timeval boottime;
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extern struct timeval runtime;
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extern volatile struct timeval time;
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extern struct timezone tz; /* XXX */
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extern int tick; /* usec per tick (1000000 / hz) */
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extern int hz; /* system clock's frequency */
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extern int stathz; /* statistics clock's frequency */
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extern int profhz; /* profiling clock's frequency */
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extern int ticks;
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extern int lbolt; /* once a second sleep address */
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extern int tickdelta;
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extern long timedelta;
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/*
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* The following macros are used to declare global sets of objects, which
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* are collected by the linker into a `struct linker_set' as defined below.
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*
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* NB: the constants defined below must match those defined in
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* ld/ld.h. Since their calculation requires arithmetic, we
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* can't name them symbolically (e.g., 23 is N_SETT | N_EXT).
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*/
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#define MAKE_SET(set, sym, type) \
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static void *const __set_##set##_sym_##sym = \
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(&__set_##set##_sym_##sym, &sym, 0); \
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asm(".stabs \"_" #set "\", " #type ", 0, 0, _" #sym)
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#define TEXT_SET(set, sym) MAKE_SET(set, sym, 23)
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#define DATA_SET(set, sym) MAKE_SET(set, sym, 25)
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#define BSS_SET(set, sym) MAKE_SET(set, sym, 27)
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#define ABS_SET(set, sym) MAKE_SET(set, sym, 21)
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/*
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* Enumerated types for known system startup interfaces.
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*
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* Startup occurs in ascending numeric order; the list entries are
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* sorted prior to attempting startup to guarantee order. Items
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* of the same level are arbitrated for order based on the 'order'
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* element.
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*
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* These numbers are arbitrary and are chosen ONLY for ordering; the
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* enumeration values are explicit rather than imlicit to provide
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* for binary compatability with inserted elements.
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*
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* The SI_SUB_RUN_SCHEDULER value must have the highest lexical value.
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*
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* The SI_SUB_CONSOLE and SI_SUB_SWAP values represent values used by
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* the BSD 4.4Lite but not by FreeBSD; they are maintained in dependent
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* order to support porting.
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*
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* The SI_SUB_PROTO_BEGIN and SI_SUB_PROTO_END bracket a range of
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* initializations to take place at splimp(). This is a historical
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* wart that should be removed -- probably running everything at
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* splimp() until the first init that doesn't want it is the correct
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* fix. They are currently present to ensure historical behaviour.
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*/
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enum sysinit_sub_id {
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SI_SUB_DUMMY = 0x00000000, /* not executed; for linker*/
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SI_SUB_CONSOLE = 0x08000000, /* console*/
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SI_SUB_COPYRIGHT = 0x08000001, /* first use of console*/
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SI_SUB_VM = 0x10000000, /* virtual memory system init*/
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SI_SUB_KMEM = 0x18000000, /* kernel memory*/
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SI_SUB_CPU = 0x20000000, /* CPU resource(s)*/
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SI_SUB_DEVFS = 0x22000000, /* get DEVFS ready */
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SI_SUB_DRIVERS = 0x23000000, /* Let Drivers initialise */
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SI_SUB_CONFIGURE = 0x24000000, /* Configure devices */
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SI_SUB_INTRINSIC = 0x28000000, /* proc 0*/
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SI_SUB_RUN_QUEUE = 0x30000000, /* the run queue*/
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SI_SUB_VM_CONF = 0x38000000, /* config VM, set limits*/
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SI_SUB_VFS = 0x40000000, /* virtual file system*/
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SI_SUB_CLOCKS = 0x48000000, /* real time and stat clocks*/
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SI_SUB_MBUF = 0x50000000, /* mbufs*/
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SI_SUB_CLIST = 0x58000000, /* clists*/
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SI_SUB_SYSV_SHM = 0x64000000, /* System V shared memory*/
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SI_SUB_SYSV_SEM = 0x68000000, /* System V semaphores*/
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SI_SUB_SYSV_MSG = 0x6C000000, /* System V message queues*/
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SI_SUB_PSEUDO = 0x70000000, /* pseudo devices*/
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SI_SUB_PROTO_BEGIN = 0x80000000, /* XXX: set splimp (kludge)*/
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SI_SUB_PROTO_IF = 0x84000000, /* interfaces*/
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SI_SUB_PROTO_DOMAIN = 0x88000000, /* domains (address families?)*/
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SI_SUB_PROTO_END = 0x8fffffff, /* XXX: set splx (kludge)*/
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SI_SUB_KPROF = 0x90000000, /* kernel profiling*/
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SI_SUB_KICK_SCHEDULER = 0xa0000000, /* start the timeout events*/
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SI_SUB_ROOT = 0xb0000000, /* root mount*/
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SI_SUB_ROOT_FDTAB = 0xb8000000, /* root vnode in fd table...*/
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SI_SUB_SWAP = 0xc0000000, /* swap*/
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SI_SUB_INTRINSIC_POST = 0xd0000000, /* proc 0 cleanup*/
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SI_SUB_KTHREAD_INIT = 0xe0000000, /* init process*/
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SI_SUB_KTHREAD_PAGE = 0xe4000000, /* pageout daemon*/
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SI_SUB_KTHREAD_VM = 0xe8000000, /* vm daemon*/
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SI_SUB_KTHREAD_UPDATE = 0xec000000, /* update daemon*/
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SI_SUB_RUN_SCHEDULER = 0xffffffff /* scheduler: no return*/
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};
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/*
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* Some enumerated orders; "ANY" sorts last.
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*/
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enum sysinit_elem_order {
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SI_ORDER_FIRST = 0x00000000, /* first*/
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SI_ORDER_SECOND = 0x00000001, /* second*/
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SI_ORDER_THIRD = 0x00000002, /* third*/
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SI_ORDER_MIDDLE = 0x10000000, /* somewhere in the middle */
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SI_ORDER_ANY = 0xffffffff /* last*/
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};
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/*
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* System initialization call types; currently two are supported... one
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* to do a simple function call and one to cause a process to be started
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* by the kernel on the callers behalf.
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*/
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typedef enum sysinit_elem_type {
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SI_TYPE_DEFAULT = 0x00000000, /* No special processing*/
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SI_TYPE_KTHREAD = 0x00000001 /* start kernel thread*/
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} si_elem_t;
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/*
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* A system initialization call instance
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*
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* The subsystem
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*/
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struct sysinit {
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unsigned int subsystem; /* subsystem identifier*/
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unsigned int order; /* init order within subsystem*/
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void (*func) __P((void *)); /* init function*/
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void *udata; /* multiplexer/argument*/
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si_elem_t type; /* sysinit_elem_type*/
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};
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/*
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* Default: no special processing
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*/
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#define SYSINIT(uniquifier, subsystem, order, func, ident) \
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static struct sysinit uniquifier ## _sys_init = { \
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subsystem, \
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order, \
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func, \
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ident, \
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SI_TYPE_DEFAULT \
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}; \
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DATA_SET(sysinit_set,uniquifier ## _sys_init);
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/*
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* Call 'fork()' before calling '(*func)(ident)';
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* for making a kernel 'thread' (or builtin process.)
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*/
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#define SYSINIT_KT(uniquifier, subsystem, order, func, ident) \
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static struct sysinit uniquifier ## _sys_init = { \
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subsystem, \
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order, \
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func, \
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ident, \
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SI_TYPE_KTHREAD \
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}; \
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DATA_SET(sysinit_set,uniquifier ## _sys_init);
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/*
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* A kernel process descriptor; used to start "internal" daemons
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*
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* Note: global_procpp may be NULL for no global save area
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*/
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struct kproc_desc {
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char *arg0; /* arg 0 (for 'ps' listing)*/
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void (*func) __P((void)); /* "main" for kernel process*/
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struct proc **global_procpp; /* ptr to proc ptr save area*/
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};
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/* init_proc.c*/
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extern void kproc_start __P((void *udata));
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#ifdef PSEUDO_LKM
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#include <sys/conf.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/lkm.h>
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#define PSEUDO_SET(init, name) \
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extern struct linker_set MODVNOPS; \
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MOD_MISC(name); \
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static int \
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name ## _load(struct lkm_table *lkmtp, int cmd) \
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{ init((void *)NULL /* XXX unused (?) */); return 0; } \
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static int \
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name ## _unload(struct lkm_table *lkmtp, int cmd) \
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{ return EINVAL; } \
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int \
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name ## _mod(struct lkm_table *lkmtp, int cmd, int ver) { \
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DISPATCH(lkmtp, cmd, ver, name ## _load, name ## _unload, \
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lkm_nullcmd); }
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#else /* PSEUDO_LKM */
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/*
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* Compatability. To be deprecated after LKM is updated.
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*/
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#define PSEUDO_SET(sym, name) SYSINIT(ps, SI_SUB_PSEUDO, SI_ORDER_ANY, sym, 0)
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#endif /* PSEUDO_LKM */
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struct linker_set {
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int ls_length;
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caddr_t ls_items[1]; /* really ls_length of them, trailing NULL */
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};
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extern const struct linker_set execsw_set;
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#endif /* _SYS_KERNEL_H_*/
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