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 _APPLERAIDCONCATSET_H
25#define _APPLERAIDCONCATSET_H
26
27#define kAppleRAIDLevelNameConcat "Concat"
28
29#ifdef KERNEL
30
31class AppleRAIDConcatSet : public AppleRAIDSet
32{
33    OSDeclareDefaultStructors(AppleRAIDConcatSet);
34
35 private:
36    UInt64 *	arMemberBlockCounts;
37    UInt32	arExpectingLiveAdd;
38
39 protected:
40    virtual bool init();
41    virtual void free();
42
43    virtual void unpauseSet(void);
44
45 public:
46    static AppleRAIDSet * createRAIDSet(AppleRAIDMember * firstMember);
47    virtual bool addSpare(AppleRAIDMember * member);
48    virtual bool addMember(AppleRAIDMember * member);
49    virtual bool removeMember(AppleRAIDMember * member, IOOptionBits options);
50
51    virtual bool resizeSet(UInt32 newMemberCount);
52    virtual bool startSet(void);
53    virtual bool publishSet(void);
54
55    virtual UInt64 getMemberSize(UInt32 memberIndex) const;
56
57    virtual AppleRAIDMemoryDescriptor * allocateMemoryDescriptor(AppleRAIDStorageRequest *storageRequest, UInt32 memberIndex);
58};
59
60
61
62class AppleRAIDConcatMemoryDescriptor : public AppleRAIDMemoryDescriptor
63{
64    OSDeclareDefaultStructors(AppleRAIDConcatMemoryDescriptor);
65
66private:
67    UInt64		mdMemberOffset;
68    UInt64		mdMemberStart;
69    UInt64		mdMemberEnd;
70
71protected:
72    virtual bool initWithStorageRequest(AppleRAIDStorageRequest *storageRequest, UInt32 memberIndex);
73    virtual bool configureForMemoryDescriptor(IOMemoryDescriptor *memoryDescriptor, UInt64 byteStart, UInt32 activeIndex);
74
75 public:
76    static AppleRAIDMemoryDescriptor *withStorageRequest(AppleRAIDStorageRequest *storageRequest, UInt32 memberIndex);
77    virtual addr64_t getPhysicalSegment(IOByteCount offset, IOByteCount * length, IOOptionBits options = 0);
78};
79
80#endif KERNEL
81
82#endif /* ! _APPLERAIDCONCATSET_H */
83