isa_fake.cc revision 2632:1bb2f91485ea 
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 * Isa Fake Device implementation
31 */
32
33#include <deque>
34#include <string>
35#include <vector>
36
37#include "base/trace.hh"
38#include "dev/isa_fake.hh"
39#include "mem/packet.hh"
40#include "sim/builder.hh"
41#include "sim/system.hh"
42
43using namespace std;
44
45IsaFake::IsaFake(Params *p)
46    : BasicPioDevice(p)
47{
48    pioSize = p->pio_size;
49}
50
51Tick
52IsaFake::read(Packet *pkt)
53{
54    assert(pkt->result == Unknown);
55    assert(pkt->addr >= pioAddr && pkt->addr < pioAddr + pioSize);
56
57    pkt->time += pioDelay;
58
59    DPRINTF(Tsunami, "read  va=%#x size=%d\n", pkt->addr, pkt->size);
60
61    switch (pkt->size) {
62         pkt->set(0xFFFFFFFFFFFFFFFFULL);
63         break;
64      case sizeof(uint32_t):
65         pkt->set((uint32_t)0xFFFFFFFF);
66         break;
67      case sizeof(uint16_t):
68         pkt->set((uint16_t)0xFFFF);
69         break;
70      case sizeof(uint8_t):
71         pkt->set((uint8_t)0xFF);
72         break;
73      default:
74        panic("invalid access size(?) for PCI configspace!\n");
75    }
76    pkt->result = Success;
77    return pioDelay;
78}
79
80Tick
81IsaFake::write(Packet *pkt)
82{
83    pkt->time += pioDelay;
84    DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt->addr, pkt->size);
85    pkt->result = Success;
86    return pioDelay;
87}
88
89BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
90
91    Param<Addr> pio_addr;
92    Param<Tick> pio_latency;
93    Param<Addr> pio_size;
94    SimObjectParam<Platform *> platform;
95    SimObjectParam<System *> system;
96
97END_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
98
99BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake)
100
101    INIT_PARAM(pio_addr, "Device Address"),
102    INIT_PARAM(pio_latency, "Programmed IO latency"),
103    INIT_PARAM(pio_size, "Size of address range"),
104    INIT_PARAM(platform, "platform"),
105    INIT_PARAM(system, "system object")
106
107END_INIT_SIM_OBJECT_PARAMS(IsaFake)
108
109CREATE_SIM_OBJECT(IsaFake)
110{
111    IsaFake::Params *p = new IsaFake::Params;
112    p->name = getInstanceName();
113    p->pio_addr = pio_addr;
114    p->pio_delay = pio_latency;
115    p->pio_size = pio_size;
116    p->platform = platform;
117    p->system = system;
118    return new IsaFake(p);
119}
120
121REGISTER_SIM_OBJECT("IsaFake", IsaFake)
122