baddev.cc revision 2107 
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
48using namespace std;
49using namespace TheISA;
50
51BadDevice::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
65Fault *
66BadDevice::read(MemReqPtr &req, uint8_t *data)
67{
68
69    panic("Device %s not imlpmented\n", devname);
70    return NoFault;
71}
72
73Fault *
74BadDevice::write(MemReqPtr &req, const uint8_t *data)
75{
76    panic("Device %s not imlpmented\n", devname);
77    return NoFault;
78}
79
80Tick
81BadDevice::cacheAccess(MemReqPtr &req)
82{
83    return curTick;
84}
85
86BEGIN_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
96END_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
97
98BEGIN_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
108END_INIT_SIM_OBJECT_PARAMS(BadDevice)
109
110CREATE_SIM_OBJECT(BadDevice)
111{
112    return new BadDevice(getInstanceName(), addr, mmu, hier, pio_bus,
113                         devicename);
114}
115
116REGISTER_SIM_OBJECT("BadDevice", BadDevice)
117