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