isa_fake.cc (3499:597f3f6c9775) isa_fake.cc (3502:1ba705a3754b)
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 * Authors: Ali Saidi
29 */
30
31/** @file
32 * Isa Fake Device implementation
33 */
34
35#include "base/trace.hh"
36#include "dev/isa_fake.hh"
37#include "mem/packet.hh"
38#include "mem/packet_access.hh"
39#include "sim/builder.hh"
40#include "sim/system.hh"
41
42using namespace std;
43
44IsaFake::IsaFake(Params *p)
45 : BasicPioDevice(p)
46{
47 if (!params()->retBadAddr)
48 pioSize = p->pio_size;
49
50 memset(&retData, p->retData, sizeof(retData));
51}
52
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 * Authors: Ali Saidi
29 */
30
31/** @file
32 * Isa Fake Device implementation
33 */
34
35#include "base/trace.hh"
36#include "dev/isa_fake.hh"
37#include "mem/packet.hh"
38#include "mem/packet_access.hh"
39#include "sim/builder.hh"
40#include "sim/system.hh"
41
42using namespace std;
43
44IsaFake::IsaFake(Params *p)
45 : BasicPioDevice(p)
46{
47 if (!params()->retBadAddr)
48 pioSize = p->pio_size;
49
50 memset(&retData, p->retData, sizeof(retData));
51}
52
53void
54IsaFake::init()
55{
56 // Only init this device if it's connected to anything.
57 if (pioPort)
58 PioDevice::init();
59}
60
61
62Tick
63IsaFake::read(PacketPtr pkt)
64{
65 assert(pkt->result == Packet::Unknown);
66
67 if (params()->retBadAddr) {
68 DPRINTF(Tsunami, "read to bad address va=%#x size=%d\n",
69 pkt->getAddr(), pkt->getSize());
70 pkt->result = Packet::BadAddress;
71 } else {
72 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
73 DPRINTF(Tsunami, "read va=%#x size=%d\n",
74 pkt->getAddr(), pkt->getSize());
75 switch (pkt->getSize()) {
76 case sizeof(uint64_t):
77 pkt->set(retData);
78 break;
79 case sizeof(uint32_t):
80 pkt->set((uint32_t)retData);
81 break;
82 case sizeof(uint16_t):
83 pkt->set((uint16_t)retData);
84 break;
85 case sizeof(uint8_t):
86 pkt->set((uint8_t)retData);
87 break;
88 default:
89 panic("invalid access size!\n");
90 }
91 pkt->result = Packet::Success;
92 }
93 return pioDelay;
94}
95
96Tick
97IsaFake::write(PacketPtr pkt)
98{
99 if (params()->retBadAddr) {
100 DPRINTF(Tsunami, "write to bad address va=%#x size=%d \n",
101 pkt->getAddr(), pkt->getSize());
102 pkt->result = Packet::BadAddress;
103 } else {
104 DPRINTF(Tsunami, "write - va=%#x size=%d \n",
105 pkt->getAddr(), pkt->getSize());
106 pkt->result = Packet::Success;
107 }
108 return pioDelay;
109}
110
111BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
112
113 Param<Addr> pio_addr;
114 Param<Tick> pio_latency;
115 Param<Addr> pio_size;
116 Param<bool> ret_bad_addr;
117 Param<uint8_t> ret_data;
118 SimObjectParam<Platform *> platform;
119 SimObjectParam<System *> system;
120
121END_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
122
123BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake)
124
125 INIT_PARAM(pio_addr, "Device Address"),
126 INIT_PARAM(pio_latency, "Programmed IO latency"),
127 INIT_PARAM(pio_size, "Size of address range"),
128 INIT_PARAM(ret_bad_addr, "Return pkt status BadAddr"),
129 INIT_PARAM(ret_data, "Data to return if not bad addr"),
130 INIT_PARAM(platform, "platform"),
131 INIT_PARAM(system, "system object")
132
133END_INIT_SIM_OBJECT_PARAMS(IsaFake)
134
135CREATE_SIM_OBJECT(IsaFake)
136{
137 IsaFake::Params *p = new IsaFake::Params;
138 p->name = getInstanceName();
139 p->pio_addr = pio_addr;
140 p->pio_delay = pio_latency;
141 p->pio_size = pio_size;
142 p->retBadAddr = ret_bad_addr;
143 p->retData = ret_data;
144 p->platform = platform;
145 p->system = system;
146 return new IsaFake(p);
147}
148
149REGISTER_SIM_OBJECT("IsaFake", IsaFake)
53Tick
54IsaFake::read(PacketPtr pkt)
55{
56 assert(pkt->result == Packet::Unknown);
57
58 if (params()->retBadAddr) {
59 DPRINTF(Tsunami, "read to bad address va=%#x size=%d\n",
60 pkt->getAddr(), pkt->getSize());
61 pkt->result = Packet::BadAddress;
62 } else {
63 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
64 DPRINTF(Tsunami, "read va=%#x size=%d\n",
65 pkt->getAddr(), pkt->getSize());
66 switch (pkt->getSize()) {
67 case sizeof(uint64_t):
68 pkt->set(retData);
69 break;
70 case sizeof(uint32_t):
71 pkt->set((uint32_t)retData);
72 break;
73 case sizeof(uint16_t):
74 pkt->set((uint16_t)retData);
75 break;
76 case sizeof(uint8_t):
77 pkt->set((uint8_t)retData);
78 break;
79 default:
80 panic("invalid access size!\n");
81 }
82 pkt->result = Packet::Success;
83 }
84 return pioDelay;
85}
86
87Tick
88IsaFake::write(PacketPtr pkt)
89{
90 if (params()->retBadAddr) {
91 DPRINTF(Tsunami, "write to bad address va=%#x size=%d \n",
92 pkt->getAddr(), pkt->getSize());
93 pkt->result = Packet::BadAddress;
94 } else {
95 DPRINTF(Tsunami, "write - va=%#x size=%d \n",
96 pkt->getAddr(), pkt->getSize());
97 pkt->result = Packet::Success;
98 }
99 return pioDelay;
100}
101
102BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
103
104 Param<Addr> pio_addr;
105 Param<Tick> pio_latency;
106 Param<Addr> pio_size;
107 Param<bool> ret_bad_addr;
108 Param<uint8_t> ret_data;
109 SimObjectParam<Platform *> platform;
110 SimObjectParam<System *> system;
111
112END_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
113
114BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake)
115
116 INIT_PARAM(pio_addr, "Device Address"),
117 INIT_PARAM(pio_latency, "Programmed IO latency"),
118 INIT_PARAM(pio_size, "Size of address range"),
119 INIT_PARAM(ret_bad_addr, "Return pkt status BadAddr"),
120 INIT_PARAM(ret_data, "Data to return if not bad addr"),
121 INIT_PARAM(platform, "platform"),
122 INIT_PARAM(system, "system object")
123
124END_INIT_SIM_OBJECT_PARAMS(IsaFake)
125
126CREATE_SIM_OBJECT(IsaFake)
127{
128 IsaFake::Params *p = new IsaFake::Params;
129 p->name = getInstanceName();
130 p->pio_addr = pio_addr;
131 p->pio_delay = pio_latency;
132 p->pio_size = pio_size;
133 p->retBadAddr = ret_bad_addr;
134 p->retData = ret_data;
135 p->platform = platform;
136 p->system = system;
137 return new IsaFake(p);
138}
139
140REGISTER_SIM_OBJECT("IsaFake", IsaFake)