intmessage.hh revision 5654:340254de2031 
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 __ARCH_X86_INTMESSAGE_HH__
32#define __ARCH_X86_INTMESSAGE_HH__
33
34#include "arch/x86/x86_traits.hh"
35#include "base/bitunion.hh"
36#include "mem/packet.hh"
37#include "mem/request.hh"
38#include "sim/host.hh"
39
40namespace X86ISA
41{
42    BitUnion32(TriggerIntMessage)
43        Bitfield<7, 0> destination;
44        Bitfield<15, 8> vector;
45        Bitfield<18, 16> deliveryMode;
46        Bitfield<19> destMode;
47        Bitfield<20> level;
48        Bitfield<21> trigger;
49    EndBitUnion(TriggerIntMessage)
50
51    namespace DeliveryMode
52    {
53        enum IntDeliveryMode {
54            Fixed = 0,
55            LowestPriority = 1,
56            SMI = 2,
57            NMI = 4,
58            INIT = 5,
59            ExtInt = 7,
60            NumModes
61        };
62
63        static const char * const names[NumModes] = {
64            "Fixed", "LowestPriority", "SMI", "Reserved",
65            "NMI", "INIT", "Reserved", "ExtInt"
66        };
67
68        static inline bool
69        isUnmaskable(int mode)
70        {
71            return (mode == SMI || mode == NMI ||
72                    mode == INIT || mode == ExtInt);
73        }
74
75        static inline bool
76        isMaskable(int mode)
77        {
78            return (mode == Fixed || mode == LowestPriority);
79        }
80
81        static inline bool
82        isReserved(int mode)
83        {
84            return !(isMaskable(mode) || isUnmaskable(mode));
85        }
86    }
87
88    static const Addr TriggerIntOffset = 0;
89
90    static inline PacketPtr
91    prepIntRequest(const uint8_t id, Addr offset, Addr size)
92    {
93        RequestPtr req = new Request(x86InterruptAddress(id, offset),
94                                     size, UNCACHEABLE);
95        PacketPtr pkt = new Packet(req, MemCmd::MessageReq, Packet::Broadcast);
96        pkt->allocate();
97        return pkt;
98    }
99
100    template<class T>
101    PacketPtr
102    buildIntRequest(const uint8_t id, T payload, Addr offset, Addr size)
103    {
104        PacketPtr pkt = prepIntRequest(id, offset, size);
105        pkt->set<T>(payload);
106        return pkt;
107    }
108
109    static inline PacketPtr
110    buildIntRequest(const uint8_t id, TriggerIntMessage payload)
111    {
112        return buildIntRequest(id, payload, TriggerIntOffset,
113                sizeof(TriggerIntMessage));
114    }
115
116    static inline PacketPtr
117    buildIntResponse()
118    {
119        panic("buildIntResponse not implemented.\n");
120    }
121}
122
123#endif
124