dev/baddev.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
  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 "dev/platform.hh"
  41 #include "mem/bus/bus.hh"
  42 #include "mem/bus/pio_interface.hh"
  43 #include "mem/bus/pio_interface_impl.hh"
  44 #include "mem/functional/memory_control.hh"
  45 #include "sim/builder.hh"
  46 #include "sim/system.hh"
  47
  48 using namespace std;
  49 using namespace TheISA;
  50
  51 BadDevice::BadDevice(const string &name, Addr a, MemoryController *mmu,
  52                      HierParams *hier, Bus *pio_bus, const string &devicename)
  53     : PioDevice(name, NULL), addr(a), devname(devicename)
  54 {
  55     mmu->add_child(this, RangeSize(addr, size));
  56
  57     if (pio_bus) {
  58         pioInterface = newPioInterface(name, hier, pio_bus, this,
  59                                       &BadDevice::cacheAccess);
  60         pioInterface->addAddrRange(RangeSize(addr, size));
  61     }
  62
  63 }
  64
  65 Fault
  66 BadDevice::read(MemReqPtr &req, uint8_t *data)
  67 {
  68
  69     panic("Device %s not imlpmented\n", devname);
  70     return NoFault;
  71 }
  72
  73 Fault
  74 BadDevice::write(MemReqPtr &req, const uint8_t *data)
  75 {
  76     panic("Device %s not imlpmented\n", devname);
  77     return NoFault;
  78 }
  79
  80 Tick
  81 BadDevice::cacheAccess(MemReqPtr &req)
  82 {
  83     return curTick;
  84 }
  85
  86 BEGIN_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
  87
  88     SimObjectParam<Platform *> platform;
  89     SimObjectParam<MemoryController *> mmu;
  90     Param<Addr> addr;
  91     SimObjectParam<HierParams *> hier;
  92     SimObjectParam<Bus*> pio_bus;
  93     Param<Tick> pio_latency;
  94     Param<string> devicename;
  95
  96 END_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
  97
  98 BEGIN_INIT_SIM_OBJECT_PARAMS(BadDevice)
  99
 100     INIT_PARAM(platform, "Platform"),
 101     INIT_PARAM(mmu, "Memory Controller"),
 102     INIT_PARAM(addr, "Device Address"),
 103     INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),
 104     INIT_PARAM_DFLT(pio_bus, "The IO Bus to attach to", NULL),
 105     INIT_PARAM_DFLT(pio_latency, "Programmed IO latency", 1000),
 106     INIT_PARAM(devicename, "Name of device to error on")
 107
 108 END_INIT_SIM_OBJECT_PARAMS(BadDevice)
 109
 110 CREATE_SIM_OBJECT(BadDevice)
 111 {
 112     return new BadDevice(getInstanceName(), addr, mmu, hier, pio_bus,
 113                          devicename);
 114 }
 115
 116 REGISTER_SIM_OBJECT("BadDevice", BadDevice)