1/* 2 * Copyright (c) 2001-2007 Apple 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#ifndef _APPLERAIDMEMORYDESCRIPTOR_H 24#define _APPLERAIDMEMORYDESCRIPTOR_H 25 26class AppleLVMVolume; 27 28class AppleRAIDMemoryDescriptor : public IOMemoryDescriptor 29{ 30 OSDeclareAbstractStructors(AppleRAIDMemoryDescriptor); 31 32 friend class AppleRAIDEventSource; // XXX remove this 33 friend class AppleRAIDStorageRequest; // XXX remove this 34 friend class AppleLVMStorageRequest; // XXX remove this 35 friend class AppleLVMGroup; // XXX remove this 36 37protected: 38 IOMemoryDescriptor *mdMemoryDescriptor; 39 IOLock *mdMemoryDescriptorLock; 40 41 AppleRAIDStorageRequest *mdStorageRequest; 42 UInt32 mdMemberIndex; 43 UInt64 mdMemberByteStart; 44 45 virtual bool initWithAddress(void *address, IOByteCount withLength, IODirection withDirection) { return false; } 46 virtual bool initWithAddress(vm_address_t address, IOByteCount withLength, IODirection withDirection, task_t withTask) 47 { return false; } 48 virtual bool initWithPhysicalAddress(IOPhysicalAddress address, IOByteCount withLength, IODirection withDirection) 49 { return false; } 50 virtual bool initWithRanges(IOVirtualRange *ranges, UInt32 withCount, IODirection withDirection, task_t withTask, 51 bool asReference = false) { return false; } 52 virtual bool initWithPhysicalRanges(IOPhysicalRange *ranges, UInt32 withCount, IODirection withDirection, 53 bool asReference = false) { return false; } 54 55 public: 56 virtual bool initWithStorageRequest(AppleRAIDStorageRequest *storageRequest, UInt32 memberIndex); 57 virtual void free(void); 58 59 virtual bool configureForMemoryDescriptor(IOMemoryDescriptor *memoryDescriptor, UInt64 byteStart, UInt32 activeIndex) { return false; } 60 virtual bool configureForMemoryDescriptor(IOMemoryDescriptor * memoryDescriptor, UInt64 requestStart, UInt64 requestSize, AppleLVMVolume * lv) { return false; } 61 62 virtual addr64_t getPhysicalSegment(IOByteCount offset, IOByteCount * length, IOOptionBits options = 0) = 0; 63 virtual IOReturn prepare(IODirection forDirection = kIODirectionNone); 64 virtual IOReturn complete(IODirection forDirection = kIODirectionNone); 65}; 66 67#endif /* ! _APPLERAIDMEMORYDESCRIPTOR_H */ 68