baddev.cc revision 1722 
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
48using namespace std;
49
50BadDevice::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
64Fault
65BadDevice::read(MemReqPtr &req, uint8_t *data)
66{
67
68    panic("Device %s not imlpmented\n", devname);
69    return No_Fault;
70}
71
72Fault
73BadDevice::write(MemReqPtr &req, const uint8_t *data)
74{
75    panic("Device %s not imlpmented\n", devname);
76    return No_Fault;
77}
78
79Tick
80BadDevice::cacheAccess(MemReqPtr &req)
81{
82    return curTick;
83}
84
85BEGIN_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
95END_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
96
97BEGIN_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
107END_INIT_SIM_OBJECT_PARAMS(BadDevice)
108
109CREATE_SIM_OBJECT(BadDevice)
110{
111    return new BadDevice(getInstanceName(), addr, mmu, hier, io_bus,
112                         devicename);
113}
114
115REGISTER_SIM_OBJECT("BadDevice", BadDevice)
116