src/dev/isa_fake.cc

   1 /*
   2  * Copyright (c) 2004-2005 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: Miguel Serrano
  29  *          Ali Saidi
  30  */
  31
  32 /** @file
  33  * Isa Fake Device implementation
  34  */
  35
  36 #include <deque>
  37 #include <string>
  38 #include <vector>
  39
  40 #include "base/trace.hh"
  41 #include "dev/isa_fake.hh"
  42 #include "mem/packet.hh"
  43 #include "mem/packet_access.hh"
  44 #include "sim/builder.hh"
  45 #include "sim/system.hh"
  46
  47 using namespace std;
  48
  49 IsaFake::IsaFake(Params *p)
  50     : BasicPioDevice(p)
  51 {
  52     pioSize = p->pio_size;
  53 }
  54
  55 Tick
  56 IsaFake::read(PacketPtr pkt)
  57 {
  58     assert(pkt->result == Packet::Unknown);
  59     assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
  60
  61     DPRINTF(Tsunami, "read  va=%#x size=%d\n", pkt->getAddr(), pkt->getSize());
  62
  63     switch (pkt->getSize()) {
  64       case sizeof(uint64_t):
  65          pkt->set(0xFFFFFFFFFFFFFFFFULL);
  66          break;
  67       case sizeof(uint32_t):
  68          pkt->set((uint32_t)0xFFFFFFFF);
  69          break;
  70       case sizeof(uint16_t):
  71          pkt->set((uint16_t)0xFFFF);
  72          break;
  73       case sizeof(uint8_t):
  74          pkt->set((uint8_t)0xFF);
  75          break;
  76       default:
  77         panic("invalid access size(?) for PCI configspace!\n");
  78     }
  79     pkt->result = Packet::Success;
  80     return pioDelay;
  81 }
  82
  83 Tick
  84 IsaFake::write(PacketPtr pkt)
  85 {
  86     DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt->getAddr(), pkt->getSize());
  87     pkt->result = Packet::Success;
  88     return pioDelay;
  89 }
  90
  91 BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
  92
  93     Param<Addr> pio_addr;
  94     Param<Tick> pio_latency;
  95     Param<Addr> pio_size;
  96     SimObjectParam<Platform *> platform;
  97     SimObjectParam<System *> system;
  98
  99 END_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
 100
 101 BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake)
 102
 103     INIT_PARAM(pio_addr, "Device Address"),
 104     INIT_PARAM(pio_latency, "Programmed IO latency"),
 105     INIT_PARAM(pio_size, "Size of address range"),
 106     INIT_PARAM(platform, "platform"),
 107     INIT_PARAM(system, "system object")
 108
 109 END_INIT_SIM_OBJECT_PARAMS(IsaFake)
 110
 111 CREATE_SIM_OBJECT(IsaFake)
 112 {
 113     IsaFake::Params *p = new IsaFake::Params;
 114     p->name = getInstanceName();
 115     p->pio_addr = pio_addr;
 116     p->pio_delay = pio_latency;
 117     p->pio_size = pio_size;
 118     p->platform = platform;
 119     p->system = system;
 120     return new IsaFake(p);
 121 }
 122
 123 REGISTER_SIM_OBJECT("IsaFake", IsaFake)