iokit/IOKit/IODeviceTreeSupport.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) 1998 Apple Computer, Inc.  All rights reserved.
  30  *
  31  * HISTORY
  32  *
  33  */
  34
  35 #ifndef _IOKIT_IODEVICETREE_H
  36 #define _IOKIT_IODEVICETREE_H
  37
  38 #include <IOKit/IORegistryEntry.h>
  39 #include <libkern/c++/OSData.h>
  40
  41 class IODeviceMemory;
  42 class IOService;
  43
  44 extern const IORegistryPlane *  gIODTPlane;
  45
  46 extern const OSSymbol *         gIODTPHandleKey;
  47
  48 extern const OSSymbol *         gIODTCompatibleKey;
  49 extern const OSSymbol *         gIODTTypeKey;
  50 extern const OSSymbol *         gIODTModelKey;
  51 extern const OSSymbol *         gIODTTargetTypeKey;
  52
  53 extern const OSSymbol *         gIODTAAPLInterruptsKey;
  54 extern const OSSymbol *         gIODTDefaultInterruptController;
  55 extern const OSSymbol *         gIODTNWInterruptMappingKey;
  56
  57 IORegistryEntry * IODeviceTreeAlloc( void * dtTop );
  58
  59
  60 bool IODTMatchNubWithKeys( IORegistryEntry * nub,
  61                                     const char * keys );
  62
  63 bool IODTCompareNubName( const IORegistryEntry * regEntry,
  64                          OSString * name, OSString ** matchingName );
  65
  66 enum {
  67     kIODTRecursive      = 0x00000001,
  68     kIODTExclusive      = 0x00000002
  69 };
  70
  71 OSCollectionIterator * IODTFindMatchingEntries( IORegistryEntry * from,
  72                         IOOptionBits options, const char * keys );
  73
  74 #if !defined(__arm64__)
  75 typedef SInt32 (*IODTCompareAddressCellFunc)
  76         (UInt32 cellCount, UInt32 left[], UInt32 right[]);
  77 #else
  78 typedef SInt64 (*IODTCompareAddressCellFunc)
  79         (UInt32 cellCount, UInt32 left[], UInt32 right[]);
  80 #endif
  81
  82 typedef void (*IODTNVLocationFunc)
  83         (IORegistryEntry * entry,
  84         UInt8 * busNum, UInt8 * deviceNum, UInt8 * functionNum );
  85
  86 void IODTSetResolving( IORegistryEntry *        regEntry,
  87                 IODTCompareAddressCellFunc      compareFunc,
  88                 IODTNVLocationFunc              locationFunc );
  89
  90 void IODTGetCellCounts( IORegistryEntry * regEntry,
  91                                             UInt32 * sizeCount, UInt32 * addressCount);
  92
  93 bool IODTResolveAddressCell( IORegistryEntry * regEntry,
  94                              UInt32 cellsIn[],
  95                              IOPhysicalAddress * phys, IOPhysicalLength * len );
  96
  97 OSArray * IODTResolveAddressing( IORegistryEntry * regEntry,
  98                         const char * addressPropertyName,
  99                         IODeviceMemory * parent );
 100
 101 struct IONVRAMDescriptor {
 102     unsigned int format:4;
 103     unsigned int marker:1;
 104     unsigned int bridgeCount:3;
 105     unsigned int busNum:2;
 106     unsigned int bridgeDevices:6 * 5;
 107     unsigned int functionNum:3;
 108     unsigned int deviceNum:5;
 109 } __attribute__((aligned(2), packed));
 110
 111 IOReturn IODTMakeNVDescriptor( IORegistryEntry * regEntry,
 112                                 IONVRAMDescriptor * hdr );
 113
 114 OSData * IODTFindSlotName( IORegistryEntry * regEntry, UInt32 deviceNumber );
 115
 116 const OSSymbol * IODTInterruptControllerName(
 117                         IORegistryEntry * regEntry );
 118
 119 bool IODTMapInterrupts( IORegistryEntry * regEntry );
 120
 121 enum {
 122     kIODTInterruptShared = 0x00000001
 123 };
 124 IOReturn IODTGetInterruptOptions( IORegistryEntry * regEntry, int source, IOOptionBits * options );
 125
 126 #ifdef __cplusplus
 127 extern "C" {
 128 #endif
 129
 130 IOReturn IONDRVLibrariesInitialize( IOService * provider );
 131
 132 #ifdef __cplusplus
 133 }
 134 #endif
 135
 136 #endif /* _IOKIT_IODEVICETREE_H */
 137