1/*
2 * Copyright (c) 2006 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 * Steve Reinhardt
30 */
31
32/**
33 * @file
34 * Definition of the Packet Class, a packet is a transaction occuring
35 * between a single level of the memory heirarchy (ie L1->L2).
36 */
37
38#include <iostream>
39#include "base/misc.hh"
40#include "mem/packet.hh"
41#include "base/trace.hh"
42
43static const std::string ReadReqString("ReadReq");
44static const std::string WriteReqString("WriteReq");
45static const std::string WriteReqNoAckString("WriteReqNoAck|Writeback");
46static const std::string ReadRespString("ReadResp");
47static const std::string WriteRespString("WriteResp");
48static const std::string SoftPFReqString("SoftPFReq");
49static const std::string SoftPFRespString("SoftPFResp");
50static const std::string HardPFReqString("HardPFReq");
51static const std::string HardPFRespString("HardPFResp");
52static const std::string InvalidateReqString("InvalidateReq");
53static const std::string WriteInvalidateReqString("WriteInvalidateReq");
54static const std::string WriteInvalidateRespString("WriteInvalidateResp");
55static const std::string UpgradeReqString("UpgradeReq");
56static const std::string ReadExReqString("ReadExReq");
57static const std::string ReadExRespString("ReadExResp");
58static const std::string OtherCmdString("<other>");
59
60const std::string &
61Packet::cmdString() const
62{
63 switch (cmd) {
64 case ReadReq: return ReadReqString;
65 case WriteReq: return WriteReqString;
66 case WriteReqNoAck: return WriteReqNoAckString;
67 case ReadResp: return ReadRespString;
68 case WriteResp: return WriteRespString;
69 case SoftPFReq: return SoftPFReqString;
70 case SoftPFResp: return SoftPFRespString;
71 case HardPFReq: return HardPFReqString;
72 case HardPFResp: return HardPFRespString;
73 case InvalidateReq: return InvalidateReqString;
74 case WriteInvalidateReq:return WriteInvalidateReqString;
75 case WriteInvalidateResp:return WriteInvalidateRespString;
76 case UpgradeReq: return UpgradeReqString;
77 case ReadExReq: return ReadExReqString;
78 case ReadExResp: return ReadExRespString;
79 default: return OtherCmdString;
80 }
81}
82
83const std::string &
84Packet::cmdIdxToString(Packet::Command idx)
85{
86 switch (idx) {
87 case ReadReq: return ReadReqString;
88 case WriteReq: return WriteReqString;
89 case WriteReqNoAck: return WriteReqNoAckString;
90 case ReadResp: return ReadRespString;
91 case WriteResp: return WriteRespString;
92 case SoftPFReq: return SoftPFReqString;
93 case SoftPFResp: return SoftPFRespString;
94 case HardPFReq: return HardPFReqString;
95 case HardPFResp: return HardPFRespString;
96 case InvalidateReq: return InvalidateReqString;
97 case WriteInvalidateReq:return WriteInvalidateReqString;
98 case WriteInvalidateResp:return WriteInvalidateRespString;
99 case UpgradeReq: return UpgradeReqString;
100 case ReadExReq: return ReadExReqString;
101 case ReadExResp: return ReadExRespString;
102 default: return OtherCmdString;
103 }
104}
105
106/** delete the data pointed to in the data pointer. Ok to call to matter how
107 * data was allocted. */
108void
109Packet::deleteData()
110{
111 assert(staticData || dynamicData);
112 if (staticData)
113 return;
114
115 if (arrayData)
116 delete [] data;
117 else
118 delete data;
119}
120
121/** If there isn't data in the packet, allocate some. */
122void
123Packet::allocate()
124{
125 if (data)
126 return;
127 assert(!staticData);
128 dynamicData = true;
129 arrayData = true;
130 data = new uint8_t[getSize()];
131}
132
133/** Do the packet modify the same addresses. */
134bool
135Packet::intersect(Packet *p)
136{
137 Addr s1 = getAddr();
138 Addr e1 = getAddr() + getSize() - 1;
139 Addr s2 = p->getAddr();
140 Addr e2 = p->getAddr() + p->getSize() - 1;
141
142 return !(s1 > e2 || e1 < s2);
143}
144
145bool
146fixPacket(Packet *func, Packet *timing)
147{
148 Addr funcStart = func->getAddr();
149 Addr funcEnd = func->getAddr() + func->getSize() - 1;
150 Addr timingStart = timing->getAddr();
151 Addr timingEnd = timing->getAddr() + timing->getSize() - 1;
152
| 1/*
2 * Copyright (c) 2006 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 * Steve Reinhardt
30 */
31
32/**
33 * @file
34 * Definition of the Packet Class, a packet is a transaction occuring
35 * between a single level of the memory heirarchy (ie L1->L2).
36 */
37
38#include <iostream>
39#include "base/misc.hh"
40#include "mem/packet.hh"
41#include "base/trace.hh"
42
43static const std::string ReadReqString("ReadReq");
44static const std::string WriteReqString("WriteReq");
45static const std::string WriteReqNoAckString("WriteReqNoAck|Writeback");
46static const std::string ReadRespString("ReadResp");
47static const std::string WriteRespString("WriteResp");
48static const std::string SoftPFReqString("SoftPFReq");
49static const std::string SoftPFRespString("SoftPFResp");
50static const std::string HardPFReqString("HardPFReq");
51static const std::string HardPFRespString("HardPFResp");
52static const std::string InvalidateReqString("InvalidateReq");
53static const std::string WriteInvalidateReqString("WriteInvalidateReq");
54static const std::string WriteInvalidateRespString("WriteInvalidateResp");
55static const std::string UpgradeReqString("UpgradeReq");
56static const std::string ReadExReqString("ReadExReq");
57static const std::string ReadExRespString("ReadExResp");
58static const std::string OtherCmdString("<other>");
59
60const std::string &
61Packet::cmdString() const
62{
63 switch (cmd) {
64 case ReadReq: return ReadReqString;
65 case WriteReq: return WriteReqString;
66 case WriteReqNoAck: return WriteReqNoAckString;
67 case ReadResp: return ReadRespString;
68 case WriteResp: return WriteRespString;
69 case SoftPFReq: return SoftPFReqString;
70 case SoftPFResp: return SoftPFRespString;
71 case HardPFReq: return HardPFReqString;
72 case HardPFResp: return HardPFRespString;
73 case InvalidateReq: return InvalidateReqString;
74 case WriteInvalidateReq:return WriteInvalidateReqString;
75 case WriteInvalidateResp:return WriteInvalidateRespString;
76 case UpgradeReq: return UpgradeReqString;
77 case ReadExReq: return ReadExReqString;
78 case ReadExResp: return ReadExRespString;
79 default: return OtherCmdString;
80 }
81}
82
83const std::string &
84Packet::cmdIdxToString(Packet::Command idx)
85{
86 switch (idx) {
87 case ReadReq: return ReadReqString;
88 case WriteReq: return WriteReqString;
89 case WriteReqNoAck: return WriteReqNoAckString;
90 case ReadResp: return ReadRespString;
91 case WriteResp: return WriteRespString;
92 case SoftPFReq: return SoftPFReqString;
93 case SoftPFResp: return SoftPFRespString;
94 case HardPFReq: return HardPFReqString;
95 case HardPFResp: return HardPFRespString;
96 case InvalidateReq: return InvalidateReqString;
97 case WriteInvalidateReq:return WriteInvalidateReqString;
98 case WriteInvalidateResp:return WriteInvalidateRespString;
99 case UpgradeReq: return UpgradeReqString;
100 case ReadExReq: return ReadExReqString;
101 case ReadExResp: return ReadExRespString;
102 default: return OtherCmdString;
103 }
104}
105
106/** delete the data pointed to in the data pointer. Ok to call to matter how
107 * data was allocted. */
108void
109Packet::deleteData()
110{
111 assert(staticData || dynamicData);
112 if (staticData)
113 return;
114
115 if (arrayData)
116 delete [] data;
117 else
118 delete data;
119}
120
121/** If there isn't data in the packet, allocate some. */
122void
123Packet::allocate()
124{
125 if (data)
126 return;
127 assert(!staticData);
128 dynamicData = true;
129 arrayData = true;
130 data = new uint8_t[getSize()];
131}
132
133/** Do the packet modify the same addresses. */
134bool
135Packet::intersect(Packet *p)
136{
137 Addr s1 = getAddr();
138 Addr e1 = getAddr() + getSize() - 1;
139 Addr s2 = p->getAddr();
140 Addr e2 = p->getAddr() + p->getSize() - 1;
141
142 return !(s1 > e2 || e1 < s2);
143}
144
145bool
146fixPacket(Packet *func, Packet *timing)
147{
148 Addr funcStart = func->getAddr();
149 Addr funcEnd = func->getAddr() + func->getSize() - 1;
150 Addr timingStart = timing->getAddr();
151 Addr timingEnd = timing->getAddr() + timing->getSize() - 1;
152
|
154
155 if (DTRACE(FunctionalAccess)) {
156 DebugOut() << func;
157 DebugOut() << timing;
158 }
159
160 // this packet can't solve our problem, continue on
161 if (!timing->hasData())
162 return true;
163
164 if (func->isRead()) {
165 if (funcStart >= timingStart && funcEnd <= timingEnd) {
166 func->allocate();
167 memcpy(func->getPtr<uint8_t>(), timing->getPtr<uint8_t>() +
168 funcStart - timingStart, func->getSize());
169 func->result = Packet::Success;
170 return false;
171 } else {
172 // In this case the timing packet only partially satisfies the
173 // requset, so we would need more information to make this work.
174 // Like bytes valid in the packet or something, so the request could
175 // continue and get this bit of possibly newer data along with the
176 // older data not written to yet.
177 panic("Timing packet only partially satisfies the functional"
178 "request. Now what?");
179 }
180 } else if (func->isWrite()) {
181 if (funcStart >= timingStart) {
182 memcpy(timing->getPtr<uint8_t>() + (funcStart - timingStart),
183 func->getPtr<uint8_t>(),
184 funcStart - std::min(funcEnd, timingEnd));
185 } else { // timingStart > funcStart
186 memcpy(timing->getPtr<uint8_t>(),
187 func->getPtr<uint8_t>() + (timingStart - funcStart),
188 timingStart - std::min(funcEnd, timingEnd));
189 }
190 // we always want to keep going with a write
191 return true;
192 } else
193 panic("Don't know how to handle command type %#x\n",
194 func->cmdToIndex());
195
196}
197
198
199std::ostream &
200operator<<(std::ostream &o, const Packet &p)
201{
202
203 o << "[0x";
204 o.setf(std::ios_base::hex, std::ios_base::showbase);
205 o << p.getAddr();
206 o.unsetf(std::ios_base::hex| std::ios_base::showbase);
207 o << ":";
208 o.setf(std::ios_base::hex, std::ios_base::showbase);
209 o << p.getAddr() + p.getSize() - 1 << "] ";
210 o.unsetf(std::ios_base::hex| std::ios_base::showbase);
211
212 if (p.result == Packet::Success)
213 o << "Successful ";
214 if (p.result == Packet::BadAddress)
215 o << "BadAddress ";
216 if (p.result == Packet::Nacked)
217 o << "Nacked ";
218 if (p.result == Packet::Unknown)
219 o << "Inflight ";
220
221 if (p.isRead())
222 o << "Read ";
223 if (p.isWrite())
224 o << "Read ";
225 if (p.isInvalidate())
226 o << "Read ";
227 if (p.isRequest())
228 o << "Request ";
229 if (p.isResponse())
230 o << "Response ";
231 if (p.hasData())
232 o << "w/Data ";
233
234 o << std::endl;
235 return o;
236}
237
| 154
155 if (DTRACE(FunctionalAccess)) {
156 DebugOut() << func;
157 DebugOut() << timing;
158 }
159
160 // this packet can't solve our problem, continue on
161 if (!timing->hasData())
162 return true;
163
164 if (func->isRead()) {
165 if (funcStart >= timingStart && funcEnd <= timingEnd) {
166 func->allocate();
167 memcpy(func->getPtr<uint8_t>(), timing->getPtr<uint8_t>() +
168 funcStart - timingStart, func->getSize());
169 func->result = Packet::Success;
170 return false;
171 } else {
172 // In this case the timing packet only partially satisfies the
173 // requset, so we would need more information to make this work.
174 // Like bytes valid in the packet or something, so the request could
175 // continue and get this bit of possibly newer data along with the
176 // older data not written to yet.
177 panic("Timing packet only partially satisfies the functional"
178 "request. Now what?");
179 }
180 } else if (func->isWrite()) {
181 if (funcStart >= timingStart) {
182 memcpy(timing->getPtr<uint8_t>() + (funcStart - timingStart),
183 func->getPtr<uint8_t>(),
184 funcStart - std::min(funcEnd, timingEnd));
185 } else { // timingStart > funcStart
186 memcpy(timing->getPtr<uint8_t>(),
187 func->getPtr<uint8_t>() + (timingStart - funcStart),
188 timingStart - std::min(funcEnd, timingEnd));
189 }
190 // we always want to keep going with a write
191 return true;
192 } else
193 panic("Don't know how to handle command type %#x\n",
194 func->cmdToIndex());
195
196}
197
198
199std::ostream &
200operator<<(std::ostream &o, const Packet &p)
201{
202
203 o << "[0x";
204 o.setf(std::ios_base::hex, std::ios_base::showbase);
205 o << p.getAddr();
206 o.unsetf(std::ios_base::hex| std::ios_base::showbase);
207 o << ":";
208 o.setf(std::ios_base::hex, std::ios_base::showbase);
209 o << p.getAddr() + p.getSize() - 1 << "] ";
210 o.unsetf(std::ios_base::hex| std::ios_base::showbase);
211
212 if (p.result == Packet::Success)
213 o << "Successful ";
214 if (p.result == Packet::BadAddress)
215 o << "BadAddress ";
216 if (p.result == Packet::Nacked)
217 o << "Nacked ";
218 if (p.result == Packet::Unknown)
219 o << "Inflight ";
220
221 if (p.isRead())
222 o << "Read ";
223 if (p.isWrite())
224 o << "Read ";
225 if (p.isInvalidate())
226 o << "Read ";
227 if (p.isRequest())
228 o << "Request ";
229 if (p.isResponse())
230 o << "Response ";
231 if (p.hasData())
232 o << "w/Data ";
233
234 o << std::endl;
235 return o;
236}
237
|