1/*
2 * Copyright (c) 2012 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Andreas Hansson
38 */
39
40#include "mem/addr_mapper.hh"
41
42AddrMapper::AddrMapper(const AddrMapperParams* p)
43 : MemObject(p),
44 masterPort(name() + "-master", *this),
45 slavePort(name() + "-slave", *this)
46{
47}
48
49void
50AddrMapper::init()
51{
52 if (!slavePort.isConnected() || !masterPort.isConnected())
53 fatal("Address mapper is not connected on both sides.\n");
54}
55
| 1/*
2 * Copyright (c) 2012 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Andreas Hansson
38 */
39
40#include "mem/addr_mapper.hh"
41
42AddrMapper::AddrMapper(const AddrMapperParams* p)
43 : MemObject(p),
44 masterPort(name() + "-master", *this),
45 slavePort(name() + "-slave", *this)
46{
47}
48
49void
50AddrMapper::init()
51{
52 if (!slavePort.isConnected() || !masterPort.isConnected())
53 fatal("Address mapper is not connected on both sides.\n");
54}
55
|
73 }
74}
75
76void
77AddrMapper::recvFunctional(PacketPtr pkt)
78{
79 Addr orig_addr = pkt->getAddr();
80 pkt->setAddr(remapAddr(orig_addr));
81 masterPort.sendFunctional(pkt);
82 pkt->setAddr(orig_addr);
83}
84
85void
86AddrMapper::recvFunctionalSnoop(PacketPtr pkt)
87{
88 Addr orig_addr = pkt->getAddr();
89 pkt->setAddr(remapAddr(orig_addr));
90 slavePort.sendFunctionalSnoop(pkt);
91 pkt->setAddr(orig_addr);
92}
93
94Tick
95AddrMapper::recvAtomic(PacketPtr pkt)
96{
97 Addr orig_addr = pkt->getAddr();
98 pkt->setAddr(remapAddr(orig_addr));
99 Tick ret_tick = masterPort.sendAtomic(pkt);
100 pkt->setAddr(orig_addr);
101 return ret_tick;
102}
103
104Tick
105AddrMapper::recvAtomicSnoop(PacketPtr pkt)
106{
107 Addr orig_addr = pkt->getAddr();
108 pkt->setAddr(remapAddr(orig_addr));
109 Tick ret_tick = slavePort.sendAtomicSnoop(pkt);
110 pkt->setAddr(orig_addr);
111 return ret_tick;
112}
113
114bool
115AddrMapper::recvTimingReq(PacketPtr pkt)
116{
117 Addr orig_addr = pkt->getAddr();
118 bool needsResponse = pkt->needsResponse();
119 bool cacheResponding = pkt->cacheResponding();
120
121 if (needsResponse && !cacheResponding) {
122 pkt->pushSenderState(new AddrMapperSenderState(orig_addr));
123 }
124
125 pkt->setAddr(remapAddr(orig_addr));
126
127 // Attempt to send the packet
128 bool successful = masterPort.sendTimingReq(pkt);
129
130 // If not successful, restore the address and sender state
131 if (!successful) {
132 pkt->setAddr(orig_addr);
133
134 if (needsResponse) {
135 delete pkt->popSenderState();
136 }
137 }
138
139 return successful;
140}
141
142bool
143AddrMapper::recvTimingResp(PacketPtr pkt)
144{
145 AddrMapperSenderState* receivedState =
146 dynamic_cast<AddrMapperSenderState*>(pkt->senderState);
147
148 // Restore initial sender state
149 if (receivedState == NULL)
150 panic("AddrMapper %s got a response without sender state\n",
151 name());
152
153 Addr remapped_addr = pkt->getAddr();
154
155 // Restore the state and address
156 pkt->senderState = receivedState->predecessor;
157 pkt->setAddr(receivedState->origAddr);
158
159 // Attempt to send the packet
160 bool successful = slavePort.sendTimingResp(pkt);
161
162 // If packet successfully sent, delete the sender state, otherwise
163 // restore state
164 if (successful) {
165 delete receivedState;
166 } else {
167 // Don't delete anything and let the packet look like we did
168 // not touch it
169 pkt->senderState = receivedState;
170 pkt->setAddr(remapped_addr);
171 }
172 return successful;
173}
174
175void
176AddrMapper::recvTimingSnoopReq(PacketPtr pkt)
177{
178 slavePort.sendTimingSnoopReq(pkt);
179}
180
181bool
182AddrMapper::recvTimingSnoopResp(PacketPtr pkt)
183{
184 return masterPort.sendTimingSnoopResp(pkt);
185}
186
187bool
188AddrMapper::isSnooping() const
189{
190 if (slavePort.isSnooping())
191 fatal("AddrMapper doesn't support remapping of snooping requests\n");
192 return false;
193}
194
195void
196AddrMapper::recvReqRetry()
197{
198 slavePort.sendRetryReq();
199}
200
201void
202AddrMapper::recvRespRetry()
203{
204 masterPort.sendRetryResp();
205}
206
207void
208AddrMapper::recvRangeChange()
209{
210 slavePort.sendRangeChange();
211}
212
213RangeAddrMapper::RangeAddrMapper(const RangeAddrMapperParams* p) :
214 AddrMapper(p),
215 originalRanges(p->original_ranges),
216 remappedRanges(p->remapped_ranges)
217{
218 if (originalRanges.size() != remappedRanges.size())
219 fatal("AddrMapper: original and shadowed range list must "
220 "be same size\n");
221
222 for (size_t x = 0; x < originalRanges.size(); x++) {
223 if (originalRanges[x].size() != remappedRanges[x].size())
224 fatal("AddrMapper: original and shadowed range list elements"
225 " aren't all of the same size\n");
226 }
227}
228
229RangeAddrMapper*
230RangeAddrMapperParams::create()
231{
232 return new RangeAddrMapper(this);
233}
234
235Addr
236RangeAddrMapper::remapAddr(Addr addr) const
237{
238 for (int i = 0; i < originalRanges.size(); ++i) {
239 if (originalRanges[i].contains(addr)) {
240 Addr offset = addr - originalRanges[i].start();
241 return offset + remappedRanges[i].start();
242 }
243 }
244
245 return addr;
246}
247
248AddrRangeList
249RangeAddrMapper::getAddrRanges() const
250{
251 // Simply return the original ranges as given by the parameters
252 AddrRangeList ranges(originalRanges.begin(), originalRanges.end());
253 return ranges;
254}
255
256
| 65 }
66}
67
68void
69AddrMapper::recvFunctional(PacketPtr pkt)
70{
71 Addr orig_addr = pkt->getAddr();
72 pkt->setAddr(remapAddr(orig_addr));
73 masterPort.sendFunctional(pkt);
74 pkt->setAddr(orig_addr);
75}
76
77void
78AddrMapper::recvFunctionalSnoop(PacketPtr pkt)
79{
80 Addr orig_addr = pkt->getAddr();
81 pkt->setAddr(remapAddr(orig_addr));
82 slavePort.sendFunctionalSnoop(pkt);
83 pkt->setAddr(orig_addr);
84}
85
86Tick
87AddrMapper::recvAtomic(PacketPtr pkt)
88{
89 Addr orig_addr = pkt->getAddr();
90 pkt->setAddr(remapAddr(orig_addr));
91 Tick ret_tick = masterPort.sendAtomic(pkt);
92 pkt->setAddr(orig_addr);
93 return ret_tick;
94}
95
96Tick
97AddrMapper::recvAtomicSnoop(PacketPtr pkt)
98{
99 Addr orig_addr = pkt->getAddr();
100 pkt->setAddr(remapAddr(orig_addr));
101 Tick ret_tick = slavePort.sendAtomicSnoop(pkt);
102 pkt->setAddr(orig_addr);
103 return ret_tick;
104}
105
106bool
107AddrMapper::recvTimingReq(PacketPtr pkt)
108{
109 Addr orig_addr = pkt->getAddr();
110 bool needsResponse = pkt->needsResponse();
111 bool cacheResponding = pkt->cacheResponding();
112
113 if (needsResponse && !cacheResponding) {
114 pkt->pushSenderState(new AddrMapperSenderState(orig_addr));
115 }
116
117 pkt->setAddr(remapAddr(orig_addr));
118
119 // Attempt to send the packet
120 bool successful = masterPort.sendTimingReq(pkt);
121
122 // If not successful, restore the address and sender state
123 if (!successful) {
124 pkt->setAddr(orig_addr);
125
126 if (needsResponse) {
127 delete pkt->popSenderState();
128 }
129 }
130
131 return successful;
132}
133
134bool
135AddrMapper::recvTimingResp(PacketPtr pkt)
136{
137 AddrMapperSenderState* receivedState =
138 dynamic_cast<AddrMapperSenderState*>(pkt->senderState);
139
140 // Restore initial sender state
141 if (receivedState == NULL)
142 panic("AddrMapper %s got a response without sender state\n",
143 name());
144
145 Addr remapped_addr = pkt->getAddr();
146
147 // Restore the state and address
148 pkt->senderState = receivedState->predecessor;
149 pkt->setAddr(receivedState->origAddr);
150
151 // Attempt to send the packet
152 bool successful = slavePort.sendTimingResp(pkt);
153
154 // If packet successfully sent, delete the sender state, otherwise
155 // restore state
156 if (successful) {
157 delete receivedState;
158 } else {
159 // Don't delete anything and let the packet look like we did
160 // not touch it
161 pkt->senderState = receivedState;
162 pkt->setAddr(remapped_addr);
163 }
164 return successful;
165}
166
167void
168AddrMapper::recvTimingSnoopReq(PacketPtr pkt)
169{
170 slavePort.sendTimingSnoopReq(pkt);
171}
172
173bool
174AddrMapper::recvTimingSnoopResp(PacketPtr pkt)
175{
176 return masterPort.sendTimingSnoopResp(pkt);
177}
178
179bool
180AddrMapper::isSnooping() const
181{
182 if (slavePort.isSnooping())
183 fatal("AddrMapper doesn't support remapping of snooping requests\n");
184 return false;
185}
186
187void
188AddrMapper::recvReqRetry()
189{
190 slavePort.sendRetryReq();
191}
192
193void
194AddrMapper::recvRespRetry()
195{
196 masterPort.sendRetryResp();
197}
198
199void
200AddrMapper::recvRangeChange()
201{
202 slavePort.sendRangeChange();
203}
204
205RangeAddrMapper::RangeAddrMapper(const RangeAddrMapperParams* p) :
206 AddrMapper(p),
207 originalRanges(p->original_ranges),
208 remappedRanges(p->remapped_ranges)
209{
210 if (originalRanges.size() != remappedRanges.size())
211 fatal("AddrMapper: original and shadowed range list must "
212 "be same size\n");
213
214 for (size_t x = 0; x < originalRanges.size(); x++) {
215 if (originalRanges[x].size() != remappedRanges[x].size())
216 fatal("AddrMapper: original and shadowed range list elements"
217 " aren't all of the same size\n");
218 }
219}
220
221RangeAddrMapper*
222RangeAddrMapperParams::create()
223{
224 return new RangeAddrMapper(this);
225}
226
227Addr
228RangeAddrMapper::remapAddr(Addr addr) const
229{
230 for (int i = 0; i < originalRanges.size(); ++i) {
231 if (originalRanges[i].contains(addr)) {
232 Addr offset = addr - originalRanges[i].start();
233 return offset + remappedRanges[i].start();
234 }
235 }
236
237 return addr;
238}
239
240AddrRangeList
241RangeAddrMapper::getAddrRanges() const
242{
243 // Simply return the original ranges as given by the parameters
244 AddrRangeList ranges(originalRanges.begin(), originalRanges.end());
245 return ranges;
246}
247
248
|