Root/
| Source at commit 1129 created 12 years 11 months ago. By meklort, Change options.o so that it reloads the system config as well. Also change it so that it uses that config for variables (NOTE: if the calue exists in chameleonConfig, it's used instead. | |
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| 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 | #ifndef _IOSUBMEMORYDESCRIPTOR_H␊ |
| 30 | #define _IOSUBMEMORYDESCRIPTOR_H␊ |
| 31 | ␊ |
| 32 | #include <IOKit/IOMemoryDescriptor.h>␊ |
| 33 | ␊ |
| 34 | /*! @class IOSubMemoryDescriptor : public IOMemoryDescriptor␊ |
| 35 | @abstract The IOSubMemoryDescriptor object describes a memory area made up of a portion of another IOMemoryDescriptor.␊ |
| 36 | @discussion The IOSubMemoryDescriptor object represents a subrange of memory, specified as a portion of another IOMemoryDescriptor. */␊ |
| 37 | ␊ |
| 38 | class IOSubMemoryDescriptor : public IOMemoryDescriptor␊ |
| 39 | {␊ |
| 40 | OSDeclareDefaultStructors(IOSubMemoryDescriptor);␊ |
| 41 | ␊ |
| 42 | protected:␊ |
| 43 | IOMemoryDescriptor * _parent;␊ |
| 44 | IOByteCount ␉ _start;␊ |
| 45 | ␊ |
| 46 | virtual void free();␊ |
| 47 | ␊ |
| 48 | public:␊ |
| 49 | /*! @function withSubRange␊ |
| 50 | @abstract Create an IOMemoryDescriptor to describe a subrange of an existing descriptor.␊ |
| 51 | @discussion This method creates and initializes an IOMemoryDescriptor for memory consisting of a subrange of the specified memory descriptor. The parent memory descriptor is retained by the new descriptor.␊ |
| 52 | @param of The parent IOMemoryDescriptor of which a subrange is to be used for the new descriptor, which will be retained by the subrange IOMemoryDescriptor.␊ |
| 53 | @param offset A byte offset into the parent memory descriptor's memory.␊ |
| 54 | @param length The length of the subrange.␊ |
| 55 | @param options␊ |
| 56 | kIOMemoryDirectionMask (options:direction)␉This nibble indicates the I/O direction to be associated with the descriptor, which may affect the operation of the prepare and complete methods on some architectures. ␊ |
| 57 | @result The created IOMemoryDescriptor on success, to be released by the caller, or zero on failure. */␊ |
| 58 | ␊ |
| 59 | static IOSubMemoryDescriptor *␉withSubRange(IOMemoryDescriptor *of,␊ |
| 60 | ␉␉␉␉␉ IOByteCount offset,␊ |
| 61 | ␉␉␉␉␉ IOByteCount length,␊ |
| 62 | ␉␉␉␉␉ IOOptionBits options);␊ |
| 63 | ␊ |
| 64 | /*␊ |
| 65 | * Initialize or reinitialize an IOSubMemoryDescriptor to describe␊ |
| 66 | * a subrange of an existing descriptor.␊ |
| 67 | *␊ |
| 68 | * An IOSubMemoryDescriptor can be re-used by calling initSubRange␊ |
| 69 | * again on an existing instance -- note that this behavior is not␊ |
| 70 | * commonly supported in other IOKit classes, although it is here.␊ |
| 71 | */␊ |
| 72 | virtual bool initSubRange( IOMemoryDescriptor * parent,␊ |
| 73 | ␉␉␉␉IOByteCount offset, IOByteCount length,␊ |
| 74 | ␉␉␉␉IODirection withDirection );␊ |
| 75 | ␊ |
| 76 | /*␊ |
| 77 | * IOMemoryDescriptor required methods␊ |
| 78 | */␊ |
| 79 | ␊ |
| 80 | virtual addr64_t getPhysicalSegment( IOByteCount offset,␊ |
| 81 | IOByteCount * length,␊ |
| 82 | IOOptionBits options = 0 );␊ |
| 83 | ␊ |
| 84 | virtual IOReturn prepare(IODirection forDirection = kIODirectionNone);␊ |
| 85 | ␊ |
| 86 | virtual IOReturn complete(IODirection forDirection = kIODirectionNone);␊ |
| 87 | ␊ |
| 88 | #ifdef __LP64__␊ |
| 89 | virtual␊ |
| 90 | #endif /* __LP64__ */␊ |
| 91 | IOReturn redirect( task_t safeTask, bool redirect );␊ |
| 92 | ␊ |
| 93 | virtual IOReturn setPurgeable( IOOptionBits newState,␊ |
| 94 | IOOptionBits * oldState );␊ |
| 95 | ␊ |
| 96 | // support map() on kIOMemoryTypeVirtual without prepare()␊ |
| 97 | virtual IOMemoryMap * ␉makeMapping(␊ |
| 98 | ␉IOMemoryDescriptor *␉owner,␊ |
| 99 | ␉task_t␉␉␉intoTask,␊ |
| 100 | ␉IOVirtualAddress␉atAddress,␊ |
| 101 | ␉IOOptionBits␉␉options,␊ |
| 102 | ␉IOByteCount␉␉offset,␊ |
| 103 | ␉IOByteCount␉␉length );␊ |
| 104 | ␊ |
| 105 | ␉virtual uint64_t getPreparationID( void );␊ |
| 106 | ␊ |
| 107 | };␊ |
| 108 | ␊ |
| 109 | #endif /* !_IOSUBMEMORYDESCRIPTOR_H */␊ |
| 110 | |
