intmessage.hh revision 6046 
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/packet_access.hh"
38#include "mem/request.hh"
39#include "sim/host.hh"
40
41namespace X86ISA
42{
43    BitUnion32(TriggerIntMessage)
44        Bitfield<7, 0> destination;
45        Bitfield<15, 8> vector;
46        Bitfield<18, 16> deliveryMode;
47        Bitfield<19> destMode;
48        Bitfield<20> level;
49        Bitfield<21> trigger;
50    EndBitUnion(TriggerIntMessage)
51
52    namespace DeliveryMode
53    {
54        enum IntDeliveryMode {
55            Fixed = 0,
56            LowestPriority = 1,
57            SMI = 2,
58            NMI = 4,
59            INIT = 5,
60            ExtInt = 7,
61            NumModes
62        };
63
64        static const char * const names[NumModes] = {
65            "Fixed", "LowestPriority", "SMI", "Reserved",
66            "NMI", "INIT", "Reserved", "ExtInt"
67        };
68
69        static inline bool
70        isReserved(int mode)
71        {
72            return mode == 3 || mode == 6;
73        }
74    }
75
76    static const Addr TriggerIntOffset = 0;
77
78    static inline PacketPtr
79    prepIntRequest(const uint8_t id, Addr offset, Addr size)
80    {
81        RequestPtr req = new Request(x86InterruptAddress(id, offset),
82                                     size, Request::UNCACHEABLE);
83        PacketPtr pkt = new Packet(req, MemCmd::MessageReq, Packet::Broadcast);
84        pkt->allocate();
85        return pkt;
86    }
87
88    template<class T>
89    PacketPtr
90    buildIntRequest(const uint8_t id, T payload, Addr offset, Addr size)
91    {
92        PacketPtr pkt = prepIntRequest(id, offset, size);
93        pkt->set<T>(payload);
94        return pkt;
95    }
96
97    static inline PacketPtr
98    buildIntRequest(const uint8_t id, TriggerIntMessage payload)
99    {
100        return buildIntRequest(id, payload, TriggerIntOffset,
101                sizeof(TriggerIntMessage));
102    }
103
104    static inline PacketPtr
105    buildIntResponse()
106    {
107        panic("buildIntResponse not implemented.\n");
108    }
109}
110
111#endif
112