src/arch/x86/intmessage.hh

   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
  41 namespace 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             SIPI = 6,
  61             ExtInt = 7,
  62             NumModes
  63         };
  64
  65         static const char * const names[NumModes] = {
  66             "Fixed", "LowestPriority", "SMI", "Reserved",
  67             "NMI", "INIT", "Startup", "ExtInt"
  68         };
  69
  70         static inline bool
  71         isReserved(int mode)
  72         {
  73             return mode == 3;
  74         }
  75     }
  76
  77     static const Addr TriggerIntOffset = 0;
  78
  79     static inline PacketPtr
  80     prepIntRequest(const uint8_t id, Addr offset, Addr size)
  81     {
  82         RequestPtr req = new Request(x86InterruptAddress(id, offset),
  83                                      size, Request::UNCACHEABLE);
  84         PacketPtr pkt = new Packet(req, MemCmd::MessageReq, Packet::Broadcast);
  85         pkt->allocate();
  86         return pkt;
  87     }
  88
  89     template<class T>
  90     PacketPtr
  91     buildIntRequest(const uint8_t id, T payload, Addr offset, Addr size)
  92     {
  93         PacketPtr pkt = prepIntRequest(id, offset, size);
  94         pkt->set<T>(payload);
  95         return pkt;
  96     }
  97
  98     static inline PacketPtr
  99     buildIntRequest(const uint8_t id, TriggerIntMessage payload)
 100     {
 101         return buildIntRequest(id, payload, TriggerIntOffset,
 102                 sizeof(TriggerIntMessage));
 103     }
 104
 105     static inline PacketPtr
 106     buildIntResponse()
 107     {
 108         panic("buildIntResponse not implemented.\n");
 109     }
 110 }
 111
 112 #endif