iokit/Kernel/IOServicePrivate.h

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1999 Apple Computer, Inc.  All rights reserved.
  30  *
  31  * HISTORY
  32  *
  33  */
  34
  35
  36 #ifndef _IOKIT_IOSERVICEPRIVATE_H
  37 #define _IOKIT_IOSERVICEPRIVATE_H
  38
  39 // options for getExistingServices()
  40 enum {
  41     kIONotifyOnce               = 0x00000001,
  42     kIOServiceExistingSet       = 0x00000002
  43 };
  44
  45 // masks for __state[1]
  46 enum {
  47     kIOServiceBusyStateMask     = 0x000000ff,
  48     kIOServiceBusyMax           = 255,
  49     kIOServiceNeedConfigState   = 0x80000000,
  50     kIOServiceSynchronousState  = 0x40000000,
  51     kIOServiceModuleStallState  = 0x20000000,
  52     kIOServiceBusyWaiterState   = 0x10000000,
  53
  54     kIOServiceSyncPubState      = 0x08000000,
  55     kIOServiceConfigState       = 0x04000000,
  56     kIOServiceTermPhase2State   = 0x01000000,
  57     kIOServiceTermPhase3State   = 0x00800000,
  58 };
  59
  60 // options for terminate()
  61 enum {
  62     kIOServiceRecursing         = 0x00100000,
  63 };
  64
  65 // notify state
  66 enum {
  67     kIOServiceNotifyEnable      = 0x00000001,
  68     kIOServiceNotifyWaiter      = 0x00000002
  69 };
  70
  71 struct _IOServiceNotifierInvocation
  72 {
  73     IOThread            thread;
  74     queue_chain_t       link;
  75 };
  76
  77 class _IOServiceNotifier : public IONotifier
  78 {
  79     friend class IOService;
  80
  81     OSDeclareDefaultStructors(_IOServiceNotifier)
  82
  83 public:
  84     OSOrderedSet *                      whence;
  85
  86     OSDictionary *                      matching;
  87     IOServiceNotificationHandler        handler;
  88     void *                              target;
  89     void *                              ref;
  90     SInt32                              priority;
  91     queue_head_t                        handlerInvocations;
  92     IOOptionBits                        state;
  93
  94     virtual void free();
  95     virtual void remove();
  96     virtual bool disable();
  97     virtual void enable( bool was );
  98     virtual void wait();
  99 };
 100
 101 class _IOServiceInterestNotifier : public IONotifier
 102 {
 103     friend class IOService;
 104
 105     OSDeclareDefaultStructors(_IOServiceInterestNotifier)
 106
 107 public:
 108     queue_chain_t               chain;
 109
 110     IOServiceInterestHandler    handler;
 111     void *                      target;
 112     void *                      ref;
 113     queue_head_t                handlerInvocations;
 114     IOOptionBits                state;
 115
 116     virtual void free();
 117     virtual void remove();
 118     virtual bool disable();
 119     virtual void enable( bool was );
 120     virtual void wait();
 121 };
 122
 123 class _IOConfigThread : public OSObject
 124 {
 125     friend class IOService;
 126
 127     OSDeclareDefaultStructors(_IOConfigThread)
 128
 129 public:
 130     virtual void free();
 131
 132     static void configThread( void );
 133     static void main( _IOConfigThread * self );
 134 };
 135
 136 enum {
 137 #ifdef LESS_THREAD_CREATE
 138     kMaxConfigThreads   = 4,
 139 #else
 140     kMaxConfigThreads   = 32,
 141 #endif
 142 };
 143
 144 enum {
 145     kMatchNubJob        = 10,
 146 };
 147
 148 class _IOServiceJob : public OSObject
 149 {
 150     friend class IOService;
 151
 152     OSDeclareDefaultStructors(_IOServiceJob)
 153
 154 public:
 155     int                 type;
 156     IOService *         nub;
 157     IOOptionBits        options;
 158
 159     static _IOServiceJob * startJob( IOService * nub, int type,
 160                           IOOptionBits options = 0 );
 161     static void pingConfig( class _IOServiceJob * job );
 162
 163 };
 164
 165 class IOResources : public IOService
 166 {
 167     friend class IOService;
 168
 169     OSDeclareDefaultStructors(IOResources)
 170
 171 public:
 172     static IOService * resources( void );
 173     virtual IOWorkLoop * getWorkLoop( ) const;
 174     virtual bool matchPropertyTable( OSDictionary * table );
 175     virtual IOReturn setProperties( OSObject * properties );
 176 };
 177
 178 class _IOOpenServiceIterator : public OSIterator
 179 {
 180     friend class IOService;
 181
 182     OSDeclareDefaultStructors(_IOOpenServiceIterator)
 183
 184     OSIterator *        iter;
 185     const IOService *   client;
 186     const IOService *   provider;
 187     IOService *         last;
 188
 189 public:
 190     static OSIterator * iterator( OSIterator * _iter,
 191                                   const IOService * client,
 192                                   const IOService * provider );
 193     virtual void free();
 194     virtual void reset();
 195     virtual bool isValid();
 196     virtual OSObject * getNextObject();
 197 };
 198
 199 extern const OSSymbol * gIOConsoleUsersKey;
 200 extern const OSSymbol * gIOConsoleSessionUIDKey;
 201 extern const OSSymbol * gIOConsoleSessionOnConsoleKey;
 202 extern const OSSymbol * gIOConsoleSessionSecureInputPIDKey;
 203
 204 #endif /* ! _IOKIT_IOSERVICEPRIVATE_H */
 205