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 24#ifndef _APPLERAIDSTRIPESET_H 25#define _APPLERAIDSTRIPESET_H 26 27#define kAppleRAIDLevelNameStripe "Stripe" 28 29#ifdef KERNEL 30 31class AppleRAIDStripeSet : public AppleRAIDSet 32{ 33 OSDeclareDefaultStructors(AppleRAIDStripeSet); 34 35 protected: 36 virtual bool init(); 37 virtual void free(); 38 39 public: 40 static AppleRAIDSet * createRAIDSet(AppleRAIDMember * firstMember); 41 virtual bool addSpare(AppleRAIDMember * member); 42 virtual bool addMember(AppleRAIDMember * member); 43 virtual bool startSet(void); 44 45 virtual AppleRAIDMemoryDescriptor * allocateMemoryDescriptor(AppleRAIDStorageRequest *storageRequest, UInt32 memberIndex); 46}; 47 48 49 50class AppleRAIDStripeMemoryDescriptor : public AppleRAIDMemoryDescriptor 51{ 52 OSDeclareDefaultStructors(AppleRAIDStripeMemoryDescriptor); 53 54private: 55 UInt32 mdMemberCount; 56 UInt32 mdSetBlockSize; 57 UInt32 mdSetBlockStart; 58 UInt32 mdSetBlockOffset; 59 60protected: 61 virtual bool initWithStorageRequest(AppleRAIDStorageRequest *storageRequest, UInt32 memberIndex); 62 virtual bool configureForMemoryDescriptor(IOMemoryDescriptor *memoryDescriptor, UInt64 byteStart, UInt32 activeIndex); 63 64 public: 65 static AppleRAIDMemoryDescriptor *withStorageRequest(AppleRAIDStorageRequest *storageRequest, UInt32 memberIndex); 66 virtual addr64_t getPhysicalSegment(IOByteCount offset, IOByteCount * length, IOOptionBits options = 0); 67}; 68 69#endif KERNEL 70 71#endif /* ! _APPLERAIDSTRIPESET_H */ 72