dev/baddev.cc

   1 /*
   2  * Copyright (c) 2004 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
  29 /* @file
  30  * BadDevice implemenation
  31  */
  32
  33 #include <deque>
  34 #include <string>
  35 #include <vector>
  36
  37 #include "base/trace.hh"
  38 #include "cpu/exec_context.hh"
  39 #include "dev/baddev.hh"
  40 #include "mem/bus/bus.hh"
  41 #include "mem/bus/pio_interface.hh"
  42 #include "mem/bus/pio_interface_impl.hh"
  43 #include "mem/functional_mem/memory_control.hh"
  44 #include "sim/builder.hh"
  45 #include "sim/system.hh"
  46
  47 using namespace std;
  48
  49 BadDevice::BadDevice(const string &name, Addr a, MemoryController *mmu,
  50                      HierParams *hier, Bus *bus, const string &devicename)
  51     : PioDevice(name), addr(a), devname(devicename)
  52 {
  53     mmu->add_child(this, RangeSize(addr, size));
  54
  55     if (bus) {
  56         pioInterface = newPioInterface(name, hier, bus, this,
  57                                       &BadDevice::cacheAccess);
  58         pioInterface->addAddrRange(RangeSize(addr, size));
  59     }
  60
  61 }
  62
  63 Fault
  64 BadDevice::read(MemReqPtr &req, uint8_t *data)
  65 {
  66
  67     panic("Device %s not imlpmented\n", devname);
  68     return No_Fault;
  69 }
  70
  71 Fault
  72 BadDevice::write(MemReqPtr &req, const uint8_t *data)
  73 {
  74     panic("Device %s not imlpmented\n", devname);
  75     return No_Fault;
  76 }
  77
  78 Tick
  79 BadDevice::cacheAccess(MemReqPtr &req)
  80 {
  81     return curTick;
  82 }
  83
  84 BEGIN_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
  85
  86     SimObjectParam<MemoryController *> mmu;
  87     Param<Addr> addr;
  88     SimObjectParam<HierParams *> hier;
  89     SimObjectParam<Bus*> io_bus;
  90     Param<string> devicename;
  91
  92 END_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
  93
  94 BEGIN_INIT_SIM_OBJECT_PARAMS(BadDevice)
  95
  96     INIT_PARAM(mmu, "Memory Controller"),
  97     INIT_PARAM(addr, "Device Address"),
  98     INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),
  99     INIT_PARAM_DFLT(io_bus, "The IO Bus to attach to", NULL),
 100     INIT_PARAM(devicename, "Name of device to error on")
 101
 102 END_INIT_SIM_OBJECT_PARAMS(BadDevice)
 103
 104 CREATE_SIM_OBJECT(BadDevice)
 105 {
 106     return new BadDevice(getInstanceName(), addr, mmu, hier, io_bus,
 107                          devicename);
 108 }
 109
 110 REGISTER_SIM_OBJECT("BadDevice", BadDevice)