i82094aa.hh revision 9807:63d7362bbdf2 
1/*
2 * Copyright (c) 2008 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 */
30
31#ifndef __DEV_X86_I82094AA_HH__
32#define __DEV_X86_I82094AA_HH__
33
34#include <map>
35
36#include "base/bitunion.hh"
37#include "dev/x86/intdev.hh"
38#include "dev/io_device.hh"
39#include "params/I82094AA.hh"
40
41namespace X86ISA
42{
43
44class I8259;
45class Interrupts;
46
47class I82094AA : public BasicPioDevice, public IntDevice
48{
49  public:
50    BitUnion64(RedirTableEntry)
51        Bitfield<63, 32> topDW;
52        Bitfield<55, 32> topReserved;
53        Bitfield<31, 0> bottomDW;
54        Bitfield<31, 17> bottomReserved;
55        Bitfield<63, 56> dest;
56        Bitfield<16> mask;
57        Bitfield<15> trigger;
58        Bitfield<14> remoteIRR;
59        Bitfield<13> polarity;
60        Bitfield<12> deliveryStatus;
61        Bitfield<11> destMode;
62        Bitfield<10, 8> deliveryMode;
63        Bitfield<7, 0> vector;
64    EndBitUnion(RedirTableEntry)
65
66  protected:
67    I8259 * extIntPic;
68
69    uint8_t regSel;
70    uint8_t initialApicId;
71    uint8_t id;
72    uint8_t arbId;
73
74    uint64_t lowestPriorityOffset;
75
76    static const uint8_t TableSize = 24;
77    // This implementation is based on version 0x11, but 0x14 avoids having
78    // to deal with the arbitration and APIC bus guck.
79    static const uint8_t APICVersion = 0x14;
80
81    RedirTableEntry redirTable[TableSize];
82    bool pinStates[TableSize];
83
84  public:
85    typedef I82094AAParams Params;
86
87    const Params *
88    params() const
89    {
90        return dynamic_cast<const Params *>(_params);
91    }
92
93    I82094AA(Params *p);
94
95    void init();
96
97    Tick read(PacketPtr pkt);
98    Tick write(PacketPtr pkt);
99
100    AddrRangeList getIntAddrRange() const;
101
102    void writeReg(uint8_t offset, uint32_t value);
103    uint32_t readReg(uint8_t offset);
104
105    BaseMasterPort &getMasterPort(const std::string &if_name,
106                                  PortID idx = InvalidPortID);
107
108    void signalInterrupt(int line);
109    void raiseInterruptPin(int number);
110    void lowerInterruptPin(int number);
111
112    virtual void serialize(std::ostream &os);
113    virtual void unserialize(Checkpoint *cp, const std::string &section);
114};
115
116} // namespace X86ISA
117
118#endif //__DEV_X86_SOUTH_BRIDGE_I8254_HH__
119