1 | /*- |
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2 | * Copyright (c) 1995 Terrence R. Lambert |
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3 | * All rights reserved. |
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4 | * |
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5 | * Copyright (c) 1990, 1993 |
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6 | * The Regents of the University of California. All rights reserved. |
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7 | * (c) UNIX System Laboratories, Inc. |
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8 | * All or some portions of this file are derived from material licensed |
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9 | * to the University of California by American Telephone and Telegraph |
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10 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
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11 | * the permission of UNIX System Laboratories, Inc. |
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12 | * |
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13 | * Redistribution and use in source and binary forms, with or without |
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14 | * modification, are permitted provided that the following conditions |
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15 | * are met: |
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16 | * 1. Redistributions of source code must retain the above copyright |
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17 | * notice, this list of conditions and the following disclaimer. |
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18 | * 2. Redistributions in binary form must reproduce the above copyright |
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19 | * notice, this list of conditions and the following disclaimer in the |
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20 | * documentation and/or other materials provided with the distribution. |
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21 | * 3. All advertising materials mentioning features or use of this software |
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22 | * must display the following acknowledgement: |
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23 | * This product includes software developed by the University of |
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24 | * California, Berkeley and its contributors. |
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25 | * 4. Neither the name of the University nor the names of its contributors |
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26 | * may be used to endorse or promote products derived from this software |
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27 | * without specific prior written permission. |
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28 | * |
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29 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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30 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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31 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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32 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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33 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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34 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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35 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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36 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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37 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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38 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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39 | * SUCH DAMAGE. |
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40 | * |
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41 | * @(#)kernel.h 8.3 (Berkeley) 1/21/94 |
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42 | * $FreeBSD$ |
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43 | */ |
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44 | |
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45 | #ifndef _SYS_KERNEL_H_ |
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46 | #define _SYS_KERNEL_H_ |
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47 | |
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48 | #include <sys/linker_set.h> |
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49 | |
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50 | #ifdef _KERNEL |
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51 | |
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52 | /* for intrhook below */ |
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53 | #include <sys/queue.h> |
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54 | |
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55 | /* Global variables for the kernel. */ |
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56 | |
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57 | #ifndef __rtems__ |
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58 | /* 1.1 */ |
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59 | extern char kernelname[MAXPATHLEN]; |
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60 | #endif /* __rtems__ */ |
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61 | |
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62 | extern int tick; /* usec per tick (1000000 / hz) */ |
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63 | extern int hz; /* system clock's frequency */ |
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64 | extern int psratio; /* ratio: prof / stat */ |
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65 | extern int stathz; /* statistics clock's frequency */ |
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66 | extern int profhz; /* profiling clock's frequency */ |
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67 | extern int profprocs; /* number of process's profiling */ |
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68 | #ifndef __rtems__ |
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69 | extern volatile int ticks; |
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70 | #else /* __rtems__ */ |
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71 | #include <rtems/score/watchdogimpl.h> |
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72 | #define ticks _Watchdog_Ticks_since_boot |
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73 | #endif /* __rtems__ */ |
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74 | |
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75 | #endif /* _KERNEL */ |
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76 | |
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77 | /* |
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78 | * Enumerated types for known system startup interfaces. |
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79 | * |
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80 | * Startup occurs in ascending numeric order; the list entries are |
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81 | * sorted prior to attempting startup to guarantee order. Items |
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82 | * of the same level are arbitrated for order based on the 'order' |
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83 | * element. |
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84 | * |
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85 | * These numbers are arbitrary and are chosen ONLY for ordering; the |
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86 | * enumeration values are explicit rather than implicit to provide |
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87 | * for binary compatibility with inserted elements. |
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88 | * |
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89 | * The SI_SUB_RUN_SCHEDULER value must have the highest lexical value. |
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90 | * |
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91 | * The SI_SUB_SWAP values represent a value used by |
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92 | * the BSD 4.4Lite but not by FreeBSD; it is maintained in dependent |
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93 | * order to support porting. |
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94 | */ |
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95 | enum sysinit_sub_id { |
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96 | SI_SUB_DUMMY = 0x0000000, /* not executed; for linker*/ |
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97 | SI_SUB_DONE = 0x0000001, /* processed*/ |
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98 | SI_SUB_TUNABLES = 0x0700000, /* establish tunable values */ |
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99 | SI_SUB_COPYRIGHT = 0x0800001, /* first use of console*/ |
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100 | SI_SUB_SETTINGS = 0x0880000, /* check and recheck settings */ |
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101 | SI_SUB_MTX_POOL_STATIC = 0x0900000, /* static mutex pool */ |
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102 | SI_SUB_LOCKMGR = 0x0980000, /* lockmgr locks */ |
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103 | SI_SUB_VM = 0x1000000, /* virtual memory system init*/ |
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104 | SI_SUB_KMEM = 0x1800000, /* kernel memory*/ |
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105 | SI_SUB_KVM_RSRC = 0x1A00000, /* kvm operational limits*/ |
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106 | SI_SUB_WITNESS = 0x1A80000, /* witness initialization */ |
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107 | SI_SUB_MTX_POOL_DYNAMIC = 0x1AC0000, /* dynamic mutex pool */ |
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108 | SI_SUB_LOCK = 0x1B00000, /* various locks */ |
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109 | SI_SUB_EVENTHANDLER = 0x1C00000, /* eventhandler init */ |
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110 | SI_SUB_VNET_PRELINK = 0x1E00000, /* vnet init before modules */ |
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111 | SI_SUB_KLD = 0x2000000, /* KLD and module setup */ |
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112 | SI_SUB_CPU = 0x2100000, /* CPU resource(s)*/ |
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113 | SI_SUB_RACCT = 0x2110000, /* resource accounting */ |
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114 | SI_SUB_RANDOM = 0x2120000, /* random number generator */ |
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115 | SI_SUB_KDTRACE = 0x2140000, /* Kernel dtrace hooks */ |
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116 | SI_SUB_MAC = 0x2180000, /* TrustedBSD MAC subsystem */ |
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117 | SI_SUB_MAC_POLICY = 0x21C0000, /* TrustedBSD MAC policies */ |
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118 | SI_SUB_MAC_LATE = 0x21D0000, /* TrustedBSD MAC subsystem */ |
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119 | SI_SUB_VNET = 0x21E0000, /* vnet 0 */ |
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120 | SI_SUB_INTRINSIC = 0x2200000, /* proc 0*/ |
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121 | SI_SUB_VM_CONF = 0x2300000, /* config VM, set limits*/ |
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122 | SI_SUB_DDB_SERVICES = 0x2380000, /* capture, scripting, etc. */ |
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123 | SI_SUB_RUN_QUEUE = 0x2400000, /* set up run queue*/ |
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124 | SI_SUB_KTRACE = 0x2480000, /* ktrace */ |
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125 | SI_SUB_OPENSOLARIS = 0x2490000, /* OpenSolaris compatibility */ |
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126 | SI_SUB_CYCLIC = 0x24A0000, /* Cyclic timers */ |
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127 | SI_SUB_AUDIT = 0x24C0000, /* audit */ |
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128 | SI_SUB_CREATE_INIT = 0x2500000, /* create init process*/ |
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129 | SI_SUB_SCHED_IDLE = 0x2600000, /* required idle procs */ |
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130 | SI_SUB_MBUF = 0x2700000, /* mbuf subsystem */ |
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131 | SI_SUB_INTR = 0x2800000, /* interrupt threads */ |
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132 | SI_SUB_SOFTINTR = 0x2800001, /* start soft interrupt thread */ |
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133 | SI_SUB_ACL = 0x2900000, /* start for filesystem ACLs */ |
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134 | SI_SUB_DEVFS = 0x2F00000, /* devfs ready for devices */ |
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135 | SI_SUB_INIT_IF = 0x3000000, /* prep for net interfaces */ |
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136 | SI_SUB_NETGRAPH = 0x3010000, /* Let Netgraph initialize */ |
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137 | SI_SUB_DTRACE = 0x3020000, /* DTrace subsystem */ |
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138 | SI_SUB_DTRACE_PROVIDER = 0x3048000, /* DTrace providers */ |
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139 | SI_SUB_DTRACE_ANON = 0x308C000, /* DTrace anon enabling */ |
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140 | SI_SUB_DRIVERS = 0x3100000, /* Let Drivers initialize */ |
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141 | SI_SUB_CONFIGURE = 0x3800000, /* Configure devices */ |
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142 | SI_SUB_VFS = 0x4000000, /* virtual filesystem*/ |
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143 | SI_SUB_CLOCKS = 0x4800000, /* real time and stat clocks*/ |
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144 | SI_SUB_CLIST = 0x5800000, /* clists*/ |
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145 | SI_SUB_SYSV_SHM = 0x6400000, /* System V shared memory*/ |
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146 | SI_SUB_SYSV_SEM = 0x6800000, /* System V semaphores*/ |
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147 | SI_SUB_SYSV_MSG = 0x6C00000, /* System V message queues*/ |
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148 | SI_SUB_P1003_1B = 0x6E00000, /* P1003.1B realtime */ |
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149 | SI_SUB_PSEUDO = 0x7000000, /* pseudo devices*/ |
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150 | SI_SUB_EXEC = 0x7400000, /* execve() handlers */ |
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151 | SI_SUB_PROTO_BEGIN = 0x8000000, /* VNET initialization */ |
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152 | SI_SUB_PROTO_IF = 0x8400000, /* interfaces*/ |
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153 | SI_SUB_PROTO_DOMAININIT = 0x8600000, /* domain registration system */ |
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154 | SI_SUB_PROTO_DOMAIN = 0x8800000, /* domains (address families?)*/ |
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155 | SI_SUB_PROTO_IFATTACHDOMAIN = 0x8800001, /* domain dependent data init*/ |
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156 | SI_SUB_PROTO_END = 0x8ffffff, /* VNET helper functions */ |
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157 | SI_SUB_KPROF = 0x9000000, /* kernel profiling*/ |
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158 | SI_SUB_KICK_SCHEDULER = 0xa000000, /* start the timeout events*/ |
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159 | SI_SUB_INT_CONFIG_HOOKS = 0xa800000, /* Interrupts enabled config */ |
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160 | SI_SUB_ROOT_CONF = 0xb000000, /* Find root devices */ |
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161 | SI_SUB_DUMP_CONF = 0xb200000, /* Find dump devices */ |
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162 | SI_SUB_RAID = 0xb380000, /* Configure GEOM classes */ |
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163 | SI_SUB_SWAP = 0xc000000, /* swap */ |
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164 | SI_SUB_INTRINSIC_POST = 0xd000000, /* proc 0 cleanup*/ |
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165 | SI_SUB_SYSCALLS = 0xd800000, /* register system calls */ |
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166 | SI_SUB_VNET_DONE = 0xdc00000, /* vnet registration complete */ |
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167 | SI_SUB_KTHREAD_INIT = 0xe000000, /* init process*/ |
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168 | SI_SUB_KTHREAD_PAGE = 0xe400000, /* pageout daemon*/ |
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169 | SI_SUB_KTHREAD_VM = 0xe800000, /* vm daemon*/ |
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170 | SI_SUB_KTHREAD_BUF = 0xea00000, /* buffer daemon*/ |
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171 | SI_SUB_KTHREAD_UPDATE = 0xec00000, /* update daemon*/ |
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172 | SI_SUB_KTHREAD_IDLE = 0xee00000, /* idle procs*/ |
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173 | SI_SUB_SMP = 0xf000000, /* start the APs*/ |
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174 | SI_SUB_RACCTD = 0xf100000, /* start raccd*/ |
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175 | SI_SUB_RUN_SCHEDULER = 0xfffffff /* scheduler*/ |
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176 | }; |
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177 | |
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178 | |
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179 | /* |
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180 | * Some enumerated orders; "ANY" sorts last. |
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181 | */ |
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182 | enum sysinit_elem_order { |
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183 | SI_ORDER_FIRST = 0x0000000, /* first*/ |
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184 | SI_ORDER_SECOND = 0x0000001, /* second*/ |
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185 | SI_ORDER_THIRD = 0x0000002, /* third*/ |
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186 | SI_ORDER_FOURTH = 0x0000003, /* fourth*/ |
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187 | SI_ORDER_MIDDLE = 0x1000000, /* somewhere in the middle */ |
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188 | SI_ORDER_ANY = 0xfffffff /* last*/ |
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189 | }; |
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190 | |
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191 | |
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192 | /* |
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193 | * A system initialization call instance |
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194 | * |
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195 | * At the moment there is one instance of sysinit. We probably do not |
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196 | * want two which is why this code is if'd out, but we definitely want |
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197 | * to discern SYSINIT's which take non-constant data pointers and |
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198 | * SYSINIT's which take constant data pointers, |
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199 | * |
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200 | * The C_* macros take functions expecting const void * arguments |
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201 | * while the non-C_* macros take functions expecting just void * arguments. |
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202 | * |
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203 | * With -Wcast-qual on, the compiler issues warnings: |
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204 | * - if we pass non-const data or functions taking non-const data |
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205 | * to a C_* macro. |
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206 | * |
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207 | * - if we pass const data to the normal macros |
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208 | * |
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209 | * However, no warning is issued if we pass a function taking const data |
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210 | * through a normal non-const macro. This is ok because the function is |
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211 | * saying it won't modify the data so we don't care whether the data is |
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212 | * modifiable or not. |
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213 | */ |
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214 | |
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215 | typedef void (*sysinit_nfunc_t)(void *); |
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216 | typedef void (*sysinit_cfunc_t)(const void *); |
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217 | |
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218 | struct sysinit { |
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219 | enum sysinit_sub_id subsystem; /* subsystem identifier*/ |
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220 | enum sysinit_elem_order order; /* init order within subsystem*/ |
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221 | sysinit_cfunc_t func; /* function */ |
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222 | const void *udata; /* multiplexer/argument */ |
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223 | }; |
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224 | |
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225 | /* |
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226 | * Default: no special processing |
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227 | * |
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228 | * The C_ version of SYSINIT is for data pointers to const |
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229 | * data ( and functions taking data pointers to const data ). |
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230 | * At the moment it is no different from SYSINIT and thus |
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231 | * still results in warnings. |
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232 | * |
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233 | * The casts are necessary to have the compiler produce the |
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234 | * correct warnings when -Wcast-qual is used. |
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235 | * |
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236 | */ |
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237 | #ifndef __rtems__ |
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238 | #define C_SYSINIT(uniquifier, subsystem, order, func, ident) \ |
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239 | static struct sysinit uniquifier ## _sys_init = { \ |
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240 | subsystem, \ |
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241 | order, \ |
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242 | func, \ |
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243 | (ident) \ |
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244 | }; \ |
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245 | DATA_SET(sysinit_set,uniquifier ## _sys_init) |
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246 | #else /* __rtems__ */ |
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247 | #define SYSINIT_ENTRY_NAME(uniquifier) \ |
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248 | _bsd_ ## uniquifier ## _sys_init |
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249 | #define SYSINIT_REFERENCE_NAME(uniquifier) \ |
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250 | _bsd_ ## uniquifier ## _sys_init_ref |
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251 | #define C_SYSINIT(uniquifier, subsystem, order, func, ident) \ |
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252 | struct sysinit SYSINIT_ENTRY_NAME(uniquifier) = { \ |
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253 | subsystem, \ |
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254 | order, \ |
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255 | func, \ |
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256 | (ident) \ |
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257 | }; \ |
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258 | DATA_SET(sysinit_set,SYSINIT_ENTRY_NAME(uniquifier)) |
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259 | #define SYSINIT_REFERENCE(uniquifier) \ |
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260 | extern struct sysinit SYSINIT_ENTRY_NAME(uniquifier); \ |
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261 | static struct sysinit const * const \ |
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262 | SYSINIT_REFERENCE_NAME(uniquifier) __used \ |
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263 | = &SYSINIT_ENTRY_NAME(uniquifier) |
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264 | #define SYSINIT_MODULE_REFERENCE(mod) \ |
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265 | SYSINIT_REFERENCE(mod ## module) |
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266 | #define SYSINIT_DRIVER_REFERENCE(driver, bus) \ |
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267 | SYSINIT_MODULE_REFERENCE(driver ## _ ## bus) |
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268 | #endif /* __rtems__ */ |
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269 | |
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270 | #define SYSINIT(uniquifier, subsystem, order, func, ident) \ |
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271 | C_SYSINIT(uniquifier, subsystem, order, \ |
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272 | (sysinit_cfunc_t)(sysinit_nfunc_t)func, (void *)(ident)) |
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273 | |
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274 | /* |
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275 | * Called on module unload: no special processing |
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276 | */ |
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277 | #ifndef __rtems__ |
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278 | #define C_SYSUNINIT(uniquifier, subsystem, order, func, ident) \ |
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279 | static struct sysinit uniquifier ## _sys_uninit = { \ |
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280 | subsystem, \ |
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281 | order, \ |
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282 | func, \ |
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283 | (ident) \ |
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284 | }; \ |
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285 | DATA_SET(sysuninit_set,uniquifier ## _sys_uninit) |
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286 | #else /* __rtems__ */ |
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287 | #define C_SYSUNINIT(uniquifier, subsystem, order, func, ident) |
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288 | #endif /* __rtems__ */ |
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289 | |
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290 | #define SYSUNINIT(uniquifier, subsystem, order, func, ident) \ |
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291 | C_SYSUNINIT(uniquifier, subsystem, order, \ |
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292 | (sysinit_cfunc_t)(sysinit_nfunc_t)func, (void *)(ident)) |
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293 | |
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294 | void sysinit_add(struct sysinit **set, struct sysinit **set_end); |
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295 | |
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296 | #ifndef __rtems__ |
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297 | /* |
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298 | * Infrastructure for tunable 'constants'. Value may be specified at compile |
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299 | * time or kernel load time. Rules relating tunables together can be placed |
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300 | * in a SYSINIT function at SI_SUB_TUNABLES with SI_ORDER_LAST. |
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301 | * |
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302 | * WARNING: developers should never use the reserved suffixes specified in |
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303 | * loader.conf(5) for any tunables or conflicts will result. |
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304 | */ |
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305 | |
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306 | /* |
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307 | * int |
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308 | * please avoid using for new tunables! |
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309 | */ |
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310 | extern void tunable_int_init(void *); |
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311 | struct tunable_int { |
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312 | const char *path; |
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313 | int *var; |
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314 | }; |
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315 | #define TUNABLE_INT(path, var) \ |
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316 | static struct tunable_int __CONCAT(__tunable_int_, __LINE__) = { \ |
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317 | (path), \ |
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318 | (var), \ |
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319 | }; \ |
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320 | SYSINIT(__CONCAT(__Tunable_init_, __LINE__), \ |
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321 | SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_int_init, \ |
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322 | &__CONCAT(__tunable_int_, __LINE__)) |
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323 | |
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324 | #define TUNABLE_INT_FETCH(path, var) getenv_int((path), (var)) |
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325 | |
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326 | /* |
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327 | * long |
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328 | */ |
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329 | extern void tunable_long_init(void *); |
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330 | struct tunable_long { |
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331 | const char *path; |
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332 | long *var; |
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333 | }; |
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334 | #define TUNABLE_LONG(path, var) \ |
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335 | static struct tunable_long __CONCAT(__tunable_long_, __LINE__) = { \ |
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336 | (path), \ |
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337 | (var), \ |
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338 | }; \ |
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339 | SYSINIT(__CONCAT(__Tunable_init_, __LINE__), \ |
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340 | SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_long_init,\ |
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341 | &__CONCAT(__tunable_long_, __LINE__)) |
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342 | |
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343 | #define TUNABLE_LONG_FETCH(path, var) getenv_long((path), (var)) |
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344 | |
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345 | /* |
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346 | * unsigned long |
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347 | */ |
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348 | extern void tunable_ulong_init(void *); |
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349 | struct tunable_ulong { |
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350 | const char *path; |
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351 | unsigned long *var; |
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352 | }; |
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353 | #define TUNABLE_ULONG(path, var) \ |
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354 | static struct tunable_ulong __CONCAT(__tunable_ulong_, __LINE__) = { \ |
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355 | (path), \ |
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356 | (var), \ |
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357 | }; \ |
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358 | SYSINIT(__CONCAT(__Tunable_init_, __LINE__), \ |
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359 | SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_ulong_init, \ |
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360 | &__CONCAT(__tunable_ulong_, __LINE__)) |
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361 | |
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362 | #define TUNABLE_ULONG_FETCH(path, var) getenv_ulong((path), (var)) |
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363 | |
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364 | /* |
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365 | * quad |
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366 | */ |
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367 | extern void tunable_quad_init(void *); |
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368 | struct tunable_quad { |
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369 | const char *path; |
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370 | quad_t *var; |
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371 | }; |
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372 | #define TUNABLE_QUAD(path, var) \ |
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373 | static struct tunable_quad __CONCAT(__tunable_quad_, __LINE__) = { \ |
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374 | (path), \ |
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375 | (var), \ |
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376 | }; \ |
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377 | SYSINIT(__CONCAT(__Tunable_init_, __LINE__), \ |
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378 | SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_quad_init, \ |
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379 | &__CONCAT(__tunable_quad_, __LINE__)) |
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380 | |
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381 | #define TUNABLE_QUAD_FETCH(path, var) getenv_quad((path), (var)) |
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382 | |
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383 | extern void tunable_str_init(void *); |
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384 | struct tunable_str { |
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385 | const char *path; |
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386 | char *var; |
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387 | int size; |
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388 | }; |
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389 | #define TUNABLE_STR(path, var, size) \ |
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390 | static struct tunable_str __CONCAT(__tunable_str_, __LINE__) = { \ |
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391 | (path), \ |
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392 | (var), \ |
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393 | (size), \ |
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394 | }; \ |
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395 | SYSINIT(__CONCAT(__Tunable_init_, __LINE__), \ |
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396 | SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_str_init, \ |
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397 | &__CONCAT(__tunable_str_, __LINE__)) |
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398 | |
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399 | #define TUNABLE_STR_FETCH(path, var, size) \ |
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400 | getenv_string((path), (var), (size)) |
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401 | #else /* __rtems__ */ |
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402 | #define TUNABLE_INT(path, var) |
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403 | #define TUNABLE_INT_FETCH(path, var) |
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404 | #define TUNABLE_LONG(path, var) |
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405 | #define TUNABLE_LONG_FETCH(path, var) |
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406 | #define TUNABLE_ULONG(path, var) |
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407 | #define TUNABLE_ULONG_FETCH(path, var) |
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408 | #define TUNABLE_QUAD(path, var) |
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409 | #define TUNABLE_QUAD_FETCH(path, var) |
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410 | #define TUNABLE_STR(path, var, size) |
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411 | #define TUNABLE_STR_FETCH(path, var, size) |
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412 | #endif /* __rtems__ */ |
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413 | |
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414 | struct intr_config_hook { |
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415 | TAILQ_ENTRY(intr_config_hook) ich_links; |
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416 | void (*ich_func)(void *arg); |
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417 | void *ich_arg; |
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418 | }; |
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419 | |
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420 | int config_intrhook_establish(struct intr_config_hook *hook); |
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421 | void config_intrhook_disestablish(struct intr_config_hook *hook); |
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422 | |
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423 | #endif /* !_SYS_KERNEL_H_*/ |
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