iokit/Kernel/IOServicePrivate.h

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1999 Apple Computer, Inc.  All rights reserved.
  24  *
  25  * HISTORY
  26  *
  27  */
  28
  29
  30 #ifndef _IOKIT_IOSERVICEPRIVATE_H
  31 #define _IOKIT_IOSERVICEPRIVATE_H
  32
  33 // options for getExistingServices()
  34 enum {
  35     kIONotifyOnce               = 0x00000001
  36 };
  37
  38 // masks for __state[1]
  39 enum {
  40     kIOServiceBusyStateMask     = 0x000000ff,
  41     kIOServiceBusyMax           = 255,
  42     kIOServiceNeedConfigState   = 0x80000000,
  43     kIOServiceSynchronousState  = 0x40000000,
  44     kIOServiceModuleStallState  = 0x20000000,
  45     kIOServiceBusyWaiterState   = 0x10000000,
  46
  47     kIOServiceSyncPubState      = 0x08000000,
  48     kIOServiceConfigState       = 0x04000000,
  49     kIOServiceTermPhase2State   = 0x01000000,
  50     kIOServiceTermPhase3State   = 0x00800000,
  51 };
  52
  53 // options for terminate()
  54 enum {
  55     kIOServiceRecursing         = 0x00100000,
  56 };
  57
  58 // notify state
  59 enum {
  60     kIOServiceNotifyEnable      = 0x00000001,
  61     kIOServiceNotifyWaiter      = 0x00000002
  62 };
  63
  64 struct _IOServiceNotifierInvocation
  65 {
  66     IOThread            thread;
  67     queue_chain_t       link;
  68 };
  69
  70 class _IOServiceNotifier : public IONotifier
  71 {
  72     friend IOService;
  73
  74     OSDeclareDefaultStructors(_IOServiceNotifier)
  75
  76 public:
  77     OSOrderedSet *                      whence;
  78
  79     OSDictionary *                      matching;
  80     IOServiceNotificationHandler        handler;
  81     void *                              target;
  82     void *                              ref;
  83     SInt32                              priority;
  84     queue_head_t                        handlerInvocations;
  85     IOOptionBits                        state;
  86
  87     virtual void free();
  88     virtual void remove();
  89     virtual bool disable();
  90     virtual void enable( bool was );
  91     virtual void wait();
  92 };
  93
  94 class _IOServiceInterestNotifier : public IONotifier
  95 {
  96     friend IOService;
  97
  98     OSDeclareDefaultStructors(_IOServiceInterestNotifier)
  99
 100 public:
 101     OSArray *                   whence;
 102
 103     IOServiceInterestHandler    handler;
 104     void *                      target;
 105     void *                      ref;
 106     queue_head_t                handlerInvocations;
 107     IOOptionBits                state;
 108
 109     virtual void free();
 110     virtual void remove();
 111     virtual bool disable();
 112     virtual void enable( bool was );
 113     virtual void wait();
 114 };
 115
 116 class _IOConfigThread : public OSObject
 117 {
 118     friend IOService;
 119
 120     OSDeclareDefaultStructors(_IOConfigThread)
 121
 122 public:
 123     IOThread            thread;
 124
 125     virtual void free();
 126
 127     static _IOConfigThread * configThread( void );
 128     static void main( _IOConfigThread * self );
 129 };
 130
 131 enum {
 132 #ifdef LESS_THREAD_CREATE
 133     kMaxConfigThreads   = 4,
 134 #else
 135     kMaxConfigThreads   = 32,
 136 #endif
 137 };
 138
 139 enum {
 140     kMatchNubJob        = 10,
 141 };
 142
 143 class _IOServiceJob : public OSObject
 144 {
 145     friend IOService;
 146
 147     OSDeclareDefaultStructors(_IOServiceJob)
 148
 149 public:
 150     int                 type;
 151     IOService *         nub;
 152     IOOptionBits        options;
 153
 154     static _IOServiceJob * startJob( IOService * nub, int type,
 155                           IOOptionBits options = 0 );
 156     static void pingConfig( class _IOServiceJob * job );
 157
 158 };
 159
 160 class IOResources : public IOService
 161 {
 162     friend IOService;
 163
 164     OSDeclareDefaultStructors(IOResources)
 165
 166 public:
 167     static IOService * resources( void );
 168     virtual IOWorkLoop * getWorkLoop( ) const;
 169     virtual bool matchPropertyTable( OSDictionary * table );
 170 };
 171
 172 class _IOOpenServiceIterator : public OSIterator
 173 {
 174     friend IOService;
 175
 176     OSDeclareDefaultStructors(_IOOpenServiceIterator)
 177
 178     OSIterator *        iter;
 179     const IOService *   client;
 180     const IOService *   provider;
 181     IOService *         last;
 182
 183 public:
 184     static OSIterator * iterator( OSIterator * _iter,
 185                                   const IOService * client,
 186                                   const IOService * provider );
 187     virtual void free();
 188     virtual void reset();
 189     virtual bool isValid();
 190     virtual OSObject * getNextObject();
 191 };
 192
 193 #endif /* ! _IOKIT_IOSERVICEPRIVATE_H */
 194