2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
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.
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.
32 * Isa Fake Device implementation
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"
44 IsaFake::IsaFake(Params
*p
)
47 if (!params()->retBadAddr
)
48 pioSize
= p
->pio_size
;
50 retData8
= params()->retData8
;
51 retData16
= params()->retData16
;
52 retData32
= params()->retData32
;
53 retData64
= params()->retData64
;
57 IsaFake::read(PacketPtr pkt
)
59 assert(pkt
->result
== Packet::Unknown
);
61 if (params()->warnAccess
!= "")
62 warn("Device %s accessed by read to address %#x size=%d\n",
63 name(), pkt
->getAddr(), pkt
->getSize());
64 if (params()->retBadAddr
) {
65 DPRINTF(Tsunami
, "read to bad address va=%#x size=%d\n",
66 pkt
->getAddr(), pkt
->getSize());
67 pkt
->result
= Packet::BadAddress
;
69 assert(pkt
->getAddr() >= pioAddr
&& pkt
->getAddr() < pioAddr
+ pioSize
);
70 DPRINTF(Tsunami
, "read va=%#x size=%d\n",
71 pkt
->getAddr(), pkt
->getSize());
72 switch (pkt
->getSize()) {
73 case sizeof(uint64_t):
76 case sizeof(uint32_t):
79 case sizeof(uint16_t):
86 panic("invalid access size!\n");
88 pkt
->result
= Packet::Success
;
94 IsaFake::write(PacketPtr pkt
)
96 if (params()->warnAccess
!= "") {
98 switch (pkt
->getSize()) {
99 case sizeof(uint64_t):
100 data
= pkt
->get
<uint64_t>();
102 case sizeof(uint32_t):
103 data
= pkt
->get
<uint32_t>();
105 case sizeof(uint16_t):
106 data
= pkt
->get
<uint16_t>();
108 case sizeof(uint8_t):
109 data
= pkt
->get
<uint8_t>();
112 panic("invalid access size!\n");
114 warn("Device %s accessed by write to address %#x size=%d data=%#x\n",
115 name(), pkt
->getAddr(), pkt
->getSize(), data
);
117 if (params()->retBadAddr
) {
118 DPRINTF(Tsunami
, "write to bad address va=%#x size=%d \n",
119 pkt
->getAddr(), pkt
->getSize());
120 pkt
->result
= Packet::BadAddress
;
122 DPRINTF(Tsunami
, "write - va=%#x size=%d \n",
123 pkt
->getAddr(), pkt
->getSize());
125 if (params()->updateData
) {
126 switch (pkt
->getSize()) {
127 case sizeof(uint64_t):
128 retData64
= pkt
->get
<uint64_t>();
130 case sizeof(uint32_t):
131 retData32
= pkt
->get
<uint32_t>();
133 case sizeof(uint16_t):
134 retData16
= pkt
->get
<uint16_t>();
136 case sizeof(uint8_t):
137 retData8
= pkt
->get
<uint8_t>();
140 panic("invalid access size!\n");
143 pkt
->result
= Packet::Success
;
148 BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake
)
150 Param
<Addr
> pio_addr
;
151 Param
<Tick
> pio_latency
;
152 Param
<Addr
> pio_size
;
153 Param
<bool> ret_bad_addr
;
154 Param
<bool> update_data
;
155 Param
<std::string
> warn_access
;
156 Param
<uint8_t> ret_data8
;
157 Param
<uint16_t> ret_data16
;
158 Param
<uint32_t> ret_data32
;
159 Param
<uint64_t> ret_data64
;
160 SimObjectParam
<Platform
*> platform
;
161 SimObjectParam
<System
*> system
;
163 END_DECLARE_SIM_OBJECT_PARAMS(IsaFake
)
165 BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake
)
167 INIT_PARAM(pio_addr
, "Device Address"),
168 INIT_PARAM(pio_latency
, "Programmed IO latency"),
169 INIT_PARAM(pio_size
, "Size of address range"),
170 INIT_PARAM(ret_bad_addr
, "Return pkt status BadAddr"),
171 INIT_PARAM(update_data
, "Update returned data"),
172 INIT_PARAM(warn_access
, "Warn if this device is touched"),
173 INIT_PARAM(ret_data8
, "Data to return if not bad addr"),
174 INIT_PARAM(ret_data16
, "Data to return if not bad addr"),
175 INIT_PARAM(ret_data32
, "Data to return if not bad addr"),
176 INIT_PARAM(ret_data64
, "Data to return if not bad addr"),
177 INIT_PARAM(platform
, "platform"),
178 INIT_PARAM(system
, "system object")
180 END_INIT_SIM_OBJECT_PARAMS(IsaFake
)
182 CREATE_SIM_OBJECT(IsaFake
)
184 IsaFake::Params
*p
= new IsaFake::Params
;
185 p
->name
= getInstanceName();
186 p
->pio_addr
= pio_addr
;
187 p
->pio_delay
= pio_latency
;
188 p
->pio_size
= pio_size
;
189 p
->retBadAddr
= ret_bad_addr
;
190 p
->updateData
= update_data
;
191 p
->warnAccess
= warn_access
;
192 p
->retData8
= ret_data8
;
193 p
->retData16
= ret_data16
;
194 p
->retData32
= ret_data32
;
195 p
->retData64
= ret_data64
;
196 p
->platform
= platform
;
198 return new IsaFake(p
);
201 REGISTER_SIM_OBJECT("IsaFake", IsaFake
)