lsq_impl.hh (9944:4ff1c5c6dcbc) lsq_impl.hh (10239:592f0bb6bd6f)
1/*
2 * Copyright (c) 2011-2012 ARM Limited
1/*
2 * Copyright (c) 2011-2012 ARM Limited
3 * Copyright (c) 2013 Advanced Micro Devices, Inc.
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 * Copyright (c) 2005-2006 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Korey Sewell
41 */
42
43#ifndef __CPU_O3_LSQ_IMPL_HH__
44#define __CPU_O3_LSQ_IMPL_HH__
45
46#include <algorithm>
47#include <list>
48#include <string>
49
50#include "cpu/o3/lsq.hh"
51#include "debug/Drain.hh"
52#include "debug/Fetch.hh"
53#include "debug/LSQ.hh"
54#include "debug/Writeback.hh"
55#include "params/DerivO3CPU.hh"
56
57using namespace std;
58
59template <class Impl>
60LSQ<Impl>::LSQ(O3CPU *cpu_ptr, IEW *iew_ptr, DerivO3CPUParams *params)
61 : cpu(cpu_ptr), iewStage(iew_ptr),
62 LQEntries(params->LQEntries),
63 SQEntries(params->SQEntries),
64 numThreads(params->numThreads),
65 retryTid(-1)
66{
67 assert(numThreads > 0 && numThreads <= Impl::MaxThreads);
68
69 //**********************************************/
70 //************ Handle SMT Parameters ***********/
71 //**********************************************/
72 std::string policy = params->smtLSQPolicy;
73
74 //Convert string to lowercase
75 std::transform(policy.begin(), policy.end(), policy.begin(),
76 (int(*)(int)) tolower);
77
78 //Figure out fetch policy
79 if (policy == "dynamic") {
80 lsqPolicy = Dynamic;
81
82 maxLQEntries = LQEntries;
83 maxSQEntries = SQEntries;
84
85 DPRINTF(LSQ, "LSQ sharing policy set to Dynamic\n");
86 } else if (policy == "partitioned") {
87 lsqPolicy = Partitioned;
88
89 //@todo:make work if part_amt doesnt divide evenly.
90 maxLQEntries = LQEntries / numThreads;
91 maxSQEntries = SQEntries / numThreads;
92
93 DPRINTF(Fetch, "LSQ sharing policy set to Partitioned: "
94 "%i entries per LQ | %i entries per SQ\n",
95 maxLQEntries,maxSQEntries);
96 } else if (policy == "threshold") {
97 lsqPolicy = Threshold;
98
99 assert(params->smtLSQThreshold > LQEntries);
100 assert(params->smtLSQThreshold > SQEntries);
101
102 //Divide up by threshold amount
103 //@todo: Should threads check the max and the total
104 //amount of the LSQ
105 maxLQEntries = params->smtLSQThreshold;
106 maxSQEntries = params->smtLSQThreshold;
107
108 DPRINTF(LSQ, "LSQ sharing policy set to Threshold: "
109 "%i entries per LQ | %i entries per SQ\n",
110 maxLQEntries,maxSQEntries);
111 } else {
112 assert(0 && "Invalid LSQ Sharing Policy.Options Are:{Dynamic,"
113 "Partitioned, Threshold}");
114 }
115
116 //Initialize LSQs
117 thread = new LSQUnit[numThreads];
118 for (ThreadID tid = 0; tid < numThreads; tid++) {
119 thread[tid].init(cpu, iew_ptr, params, this,
120 maxLQEntries, maxSQEntries, tid);
121 thread[tid].setDcachePort(&cpu_ptr->getDataPort());
122 }
123}
124
125
126template<class Impl>
127std::string
128LSQ<Impl>::name() const
129{
130 return iewStage->name() + ".lsq";
131}
132
133template<class Impl>
134void
135LSQ<Impl>::regStats()
136{
137 //Initialize LSQs
138 for (ThreadID tid = 0; tid < numThreads; tid++) {
139 thread[tid].regStats();
140 }
141}
142
143template<class Impl>
144void
145LSQ<Impl>::setActiveThreads(list<ThreadID> *at_ptr)
146{
147 activeThreads = at_ptr;
148 assert(activeThreads != 0);
149}
150
151template <class Impl>
152void
153LSQ<Impl>::drainSanityCheck() const
154{
155 assert(isDrained());
156
157 for (ThreadID tid = 0; tid < numThreads; tid++)
158 thread[tid].drainSanityCheck();
159}
160
161template <class Impl>
162bool
163LSQ<Impl>::isDrained() const
164{
165 bool drained(true);
166
167 if (!lqEmpty()) {
168 DPRINTF(Drain, "Not drained, LQ not empty.\n");
169 drained = false;
170 }
171
172 if (!sqEmpty()) {
173 DPRINTF(Drain, "Not drained, SQ not empty.\n");
174 drained = false;
175 }
176
177 if (retryTid != InvalidThreadID) {
178 DPRINTF(Drain, "Not drained, the LSQ has blocked the caches.\n");
179 drained = false;
180 }
181
182 return drained;
183}
184
185template <class Impl>
186void
187LSQ<Impl>::takeOverFrom()
188{
189 for (ThreadID tid = 0; tid < numThreads; tid++) {
190 thread[tid].takeOverFrom();
191 }
192}
193
194template <class Impl>
195int
196LSQ<Impl>::entryAmount(ThreadID num_threads)
197{
198 if (lsqPolicy == Partitioned) {
199 return LQEntries / num_threads;
200 } else {
201 return 0;
202 }
203}
204
205template <class Impl>
206void
207LSQ<Impl>::resetEntries()
208{
209 if (lsqPolicy != Dynamic || numThreads > 1) {
210 int active_threads = activeThreads->size();
211
212 int maxEntries;
213
214 if (lsqPolicy == Partitioned) {
215 maxEntries = LQEntries / active_threads;
216 } else if (lsqPolicy == Threshold && active_threads == 1) {
217 maxEntries = LQEntries;
218 } else {
219 maxEntries = LQEntries;
220 }
221
222 list<ThreadID>::iterator threads = activeThreads->begin();
223 list<ThreadID>::iterator end = activeThreads->end();
224
225 while (threads != end) {
226 ThreadID tid = *threads++;
227
228 resizeEntries(maxEntries, tid);
229 }
230 }
231}
232
233template<class Impl>
234void
235LSQ<Impl>::removeEntries(ThreadID tid)
236{
237 thread[tid].clearLQ();
238 thread[tid].clearSQ();
239}
240
241template<class Impl>
242void
243LSQ<Impl>::resizeEntries(unsigned size, ThreadID tid)
244{
245 thread[tid].resizeLQ(size);
246 thread[tid].resizeSQ(size);
247}
248
249template<class Impl>
250void
251LSQ<Impl>::tick()
252{
253 list<ThreadID>::iterator threads = activeThreads->begin();
254 list<ThreadID>::iterator end = activeThreads->end();
255
256 while (threads != end) {
257 ThreadID tid = *threads++;
258
259 thread[tid].tick();
260 }
261}
262
263template<class Impl>
264void
265LSQ<Impl>::insertLoad(DynInstPtr &load_inst)
266{
267 ThreadID tid = load_inst->threadNumber;
268
269 thread[tid].insertLoad(load_inst);
270}
271
272template<class Impl>
273void
274LSQ<Impl>::insertStore(DynInstPtr &store_inst)
275{
276 ThreadID tid = store_inst->threadNumber;
277
278 thread[tid].insertStore(store_inst);
279}
280
281template<class Impl>
282Fault
283LSQ<Impl>::executeLoad(DynInstPtr &inst)
284{
285 ThreadID tid = inst->threadNumber;
286
287 return thread[tid].executeLoad(inst);
288}
289
290template<class Impl>
291Fault
292LSQ<Impl>::executeStore(DynInstPtr &inst)
293{
294 ThreadID tid = inst->threadNumber;
295
296 return thread[tid].executeStore(inst);
297}
298
299template<class Impl>
300void
301LSQ<Impl>::writebackStores()
302{
303 list<ThreadID>::iterator threads = activeThreads->begin();
304 list<ThreadID>::iterator end = activeThreads->end();
305
306 while (threads != end) {
307 ThreadID tid = *threads++;
308
309 if (numStoresToWB(tid) > 0) {
310 DPRINTF(Writeback,"[tid:%i] Writing back stores. %i stores "
311 "available for Writeback.\n", tid, numStoresToWB(tid));
312 }
313
314 thread[tid].writebackStores();
315 }
316}
317
318template<class Impl>
319bool
320LSQ<Impl>::violation()
321{
322 /* Answers: Does Anybody Have a Violation?*/
323 list<ThreadID>::iterator threads = activeThreads->begin();
324 list<ThreadID>::iterator end = activeThreads->end();
325
326 while (threads != end) {
327 ThreadID tid = *threads++;
328
329 if (thread[tid].violation())
330 return true;
331 }
332
333 return false;
334}
335
336template <class Impl>
337void
338LSQ<Impl>::recvRetry()
339{
340 if (retryTid == InvalidThreadID)
341 {
342 //Squashed, so drop it
343 return;
344 }
345 int curr_retry_tid = retryTid;
346 // Speculatively clear the retry Tid. This will get set again if
347 // the LSQUnit was unable to complete its access.
348 retryTid = -1;
349 thread[curr_retry_tid].recvRetry();
350}
351
352template <class Impl>
353bool
354LSQ<Impl>::recvTimingResp(PacketPtr pkt)
355{
356 if (pkt->isError())
357 DPRINTF(LSQ, "Got error packet back for address: %#X\n",
358 pkt->getAddr());
359 thread[pkt->req->threadId()].completeDataAccess(pkt);
360 return true;
361}
362
363template <class Impl>
364void
365LSQ<Impl>::recvTimingSnoopReq(PacketPtr pkt)
366{
367 DPRINTF(LSQ, "received pkt for addr:%#x %s\n", pkt->getAddr(),
368 pkt->cmdString());
369
370 // must be a snoop
371 if (pkt->isInvalidate()) {
372 DPRINTF(LSQ, "received invalidation for addr:%#x\n",
373 pkt->getAddr());
374 for (ThreadID tid = 0; tid < numThreads; tid++) {
375 thread[tid].checkSnoop(pkt);
376 }
377 }
378}
379
380template<class Impl>
381int
382LSQ<Impl>::getCount()
383{
384 unsigned total = 0;
385
386 list<ThreadID>::iterator threads = activeThreads->begin();
387 list<ThreadID>::iterator end = activeThreads->end();
388
389 while (threads != end) {
390 ThreadID tid = *threads++;
391
392 total += getCount(tid);
393 }
394
395 return total;
396}
397
398template<class Impl>
399int
400LSQ<Impl>::numLoads()
401{
402 unsigned total = 0;
403
404 list<ThreadID>::iterator threads = activeThreads->begin();
405 list<ThreadID>::iterator end = activeThreads->end();
406
407 while (threads != end) {
408 ThreadID tid = *threads++;
409
410 total += numLoads(tid);
411 }
412
413 return total;
414}
415
416template<class Impl>
417int
418LSQ<Impl>::numStores()
419{
420 unsigned total = 0;
421
422 list<ThreadID>::iterator threads = activeThreads->begin();
423 list<ThreadID>::iterator end = activeThreads->end();
424
425 while (threads != end) {
426 ThreadID tid = *threads++;
427
428 total += thread[tid].numStores();
429 }
430
431 return total;
432}
433
434template<class Impl>
435unsigned
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder. You may use the software subject to the license
11 * terms below provided that you ensure that this notice is replicated
12 * unmodified and in its entirety in all distributions of the software,
13 * modified or unmodified, in source code or in binary form.
14 *
15 * Copyright (c) 2005-2006 The Regents of The University of Michigan
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Korey Sewell
42 */
43
44#ifndef __CPU_O3_LSQ_IMPL_HH__
45#define __CPU_O3_LSQ_IMPL_HH__
46
47#include <algorithm>
48#include <list>
49#include <string>
50
51#include "cpu/o3/lsq.hh"
52#include "debug/Drain.hh"
53#include "debug/Fetch.hh"
54#include "debug/LSQ.hh"
55#include "debug/Writeback.hh"
56#include "params/DerivO3CPU.hh"
57
58using namespace std;
59
60template <class Impl>
61LSQ<Impl>::LSQ(O3CPU *cpu_ptr, IEW *iew_ptr, DerivO3CPUParams *params)
62 : cpu(cpu_ptr), iewStage(iew_ptr),
63 LQEntries(params->LQEntries),
64 SQEntries(params->SQEntries),
65 numThreads(params->numThreads),
66 retryTid(-1)
67{
68 assert(numThreads > 0 && numThreads <= Impl::MaxThreads);
69
70 //**********************************************/
71 //************ Handle SMT Parameters ***********/
72 //**********************************************/
73 std::string policy = params->smtLSQPolicy;
74
75 //Convert string to lowercase
76 std::transform(policy.begin(), policy.end(), policy.begin(),
77 (int(*)(int)) tolower);
78
79 //Figure out fetch policy
80 if (policy == "dynamic") {
81 lsqPolicy = Dynamic;
82
83 maxLQEntries = LQEntries;
84 maxSQEntries = SQEntries;
85
86 DPRINTF(LSQ, "LSQ sharing policy set to Dynamic\n");
87 } else if (policy == "partitioned") {
88 lsqPolicy = Partitioned;
89
90 //@todo:make work if part_amt doesnt divide evenly.
91 maxLQEntries = LQEntries / numThreads;
92 maxSQEntries = SQEntries / numThreads;
93
94 DPRINTF(Fetch, "LSQ sharing policy set to Partitioned: "
95 "%i entries per LQ | %i entries per SQ\n",
96 maxLQEntries,maxSQEntries);
97 } else if (policy == "threshold") {
98 lsqPolicy = Threshold;
99
100 assert(params->smtLSQThreshold > LQEntries);
101 assert(params->smtLSQThreshold > SQEntries);
102
103 //Divide up by threshold amount
104 //@todo: Should threads check the max and the total
105 //amount of the LSQ
106 maxLQEntries = params->smtLSQThreshold;
107 maxSQEntries = params->smtLSQThreshold;
108
109 DPRINTF(LSQ, "LSQ sharing policy set to Threshold: "
110 "%i entries per LQ | %i entries per SQ\n",
111 maxLQEntries,maxSQEntries);
112 } else {
113 assert(0 && "Invalid LSQ Sharing Policy.Options Are:{Dynamic,"
114 "Partitioned, Threshold}");
115 }
116
117 //Initialize LSQs
118 thread = new LSQUnit[numThreads];
119 for (ThreadID tid = 0; tid < numThreads; tid++) {
120 thread[tid].init(cpu, iew_ptr, params, this,
121 maxLQEntries, maxSQEntries, tid);
122 thread[tid].setDcachePort(&cpu_ptr->getDataPort());
123 }
124}
125
126
127template<class Impl>
128std::string
129LSQ<Impl>::name() const
130{
131 return iewStage->name() + ".lsq";
132}
133
134template<class Impl>
135void
136LSQ<Impl>::regStats()
137{
138 //Initialize LSQs
139 for (ThreadID tid = 0; tid < numThreads; tid++) {
140 thread[tid].regStats();
141 }
142}
143
144template<class Impl>
145void
146LSQ<Impl>::setActiveThreads(list<ThreadID> *at_ptr)
147{
148 activeThreads = at_ptr;
149 assert(activeThreads != 0);
150}
151
152template <class Impl>
153void
154LSQ<Impl>::drainSanityCheck() const
155{
156 assert(isDrained());
157
158 for (ThreadID tid = 0; tid < numThreads; tid++)
159 thread[tid].drainSanityCheck();
160}
161
162template <class Impl>
163bool
164LSQ<Impl>::isDrained() const
165{
166 bool drained(true);
167
168 if (!lqEmpty()) {
169 DPRINTF(Drain, "Not drained, LQ not empty.\n");
170 drained = false;
171 }
172
173 if (!sqEmpty()) {
174 DPRINTF(Drain, "Not drained, SQ not empty.\n");
175 drained = false;
176 }
177
178 if (retryTid != InvalidThreadID) {
179 DPRINTF(Drain, "Not drained, the LSQ has blocked the caches.\n");
180 drained = false;
181 }
182
183 return drained;
184}
185
186template <class Impl>
187void
188LSQ<Impl>::takeOverFrom()
189{
190 for (ThreadID tid = 0; tid < numThreads; tid++) {
191 thread[tid].takeOverFrom();
192 }
193}
194
195template <class Impl>
196int
197LSQ<Impl>::entryAmount(ThreadID num_threads)
198{
199 if (lsqPolicy == Partitioned) {
200 return LQEntries / num_threads;
201 } else {
202 return 0;
203 }
204}
205
206template <class Impl>
207void
208LSQ<Impl>::resetEntries()
209{
210 if (lsqPolicy != Dynamic || numThreads > 1) {
211 int active_threads = activeThreads->size();
212
213 int maxEntries;
214
215 if (lsqPolicy == Partitioned) {
216 maxEntries = LQEntries / active_threads;
217 } else if (lsqPolicy == Threshold && active_threads == 1) {
218 maxEntries = LQEntries;
219 } else {
220 maxEntries = LQEntries;
221 }
222
223 list<ThreadID>::iterator threads = activeThreads->begin();
224 list<ThreadID>::iterator end = activeThreads->end();
225
226 while (threads != end) {
227 ThreadID tid = *threads++;
228
229 resizeEntries(maxEntries, tid);
230 }
231 }
232}
233
234template<class Impl>
235void
236LSQ<Impl>::removeEntries(ThreadID tid)
237{
238 thread[tid].clearLQ();
239 thread[tid].clearSQ();
240}
241
242template<class Impl>
243void
244LSQ<Impl>::resizeEntries(unsigned size, ThreadID tid)
245{
246 thread[tid].resizeLQ(size);
247 thread[tid].resizeSQ(size);
248}
249
250template<class Impl>
251void
252LSQ<Impl>::tick()
253{
254 list<ThreadID>::iterator threads = activeThreads->begin();
255 list<ThreadID>::iterator end = activeThreads->end();
256
257 while (threads != end) {
258 ThreadID tid = *threads++;
259
260 thread[tid].tick();
261 }
262}
263
264template<class Impl>
265void
266LSQ<Impl>::insertLoad(DynInstPtr &load_inst)
267{
268 ThreadID tid = load_inst->threadNumber;
269
270 thread[tid].insertLoad(load_inst);
271}
272
273template<class Impl>
274void
275LSQ<Impl>::insertStore(DynInstPtr &store_inst)
276{
277 ThreadID tid = store_inst->threadNumber;
278
279 thread[tid].insertStore(store_inst);
280}
281
282template<class Impl>
283Fault
284LSQ<Impl>::executeLoad(DynInstPtr &inst)
285{
286 ThreadID tid = inst->threadNumber;
287
288 return thread[tid].executeLoad(inst);
289}
290
291template<class Impl>
292Fault
293LSQ<Impl>::executeStore(DynInstPtr &inst)
294{
295 ThreadID tid = inst->threadNumber;
296
297 return thread[tid].executeStore(inst);
298}
299
300template<class Impl>
301void
302LSQ<Impl>::writebackStores()
303{
304 list<ThreadID>::iterator threads = activeThreads->begin();
305 list<ThreadID>::iterator end = activeThreads->end();
306
307 while (threads != end) {
308 ThreadID tid = *threads++;
309
310 if (numStoresToWB(tid) > 0) {
311 DPRINTF(Writeback,"[tid:%i] Writing back stores. %i stores "
312 "available for Writeback.\n", tid, numStoresToWB(tid));
313 }
314
315 thread[tid].writebackStores();
316 }
317}
318
319template<class Impl>
320bool
321LSQ<Impl>::violation()
322{
323 /* Answers: Does Anybody Have a Violation?*/
324 list<ThreadID>::iterator threads = activeThreads->begin();
325 list<ThreadID>::iterator end = activeThreads->end();
326
327 while (threads != end) {
328 ThreadID tid = *threads++;
329
330 if (thread[tid].violation())
331 return true;
332 }
333
334 return false;
335}
336
337template <class Impl>
338void
339LSQ<Impl>::recvRetry()
340{
341 if (retryTid == InvalidThreadID)
342 {
343 //Squashed, so drop it
344 return;
345 }
346 int curr_retry_tid = retryTid;
347 // Speculatively clear the retry Tid. This will get set again if
348 // the LSQUnit was unable to complete its access.
349 retryTid = -1;
350 thread[curr_retry_tid].recvRetry();
351}
352
353template <class Impl>
354bool
355LSQ<Impl>::recvTimingResp(PacketPtr pkt)
356{
357 if (pkt->isError())
358 DPRINTF(LSQ, "Got error packet back for address: %#X\n",
359 pkt->getAddr());
360 thread[pkt->req->threadId()].completeDataAccess(pkt);
361 return true;
362}
363
364template <class Impl>
365void
366LSQ<Impl>::recvTimingSnoopReq(PacketPtr pkt)
367{
368 DPRINTF(LSQ, "received pkt for addr:%#x %s\n", pkt->getAddr(),
369 pkt->cmdString());
370
371 // must be a snoop
372 if (pkt->isInvalidate()) {
373 DPRINTF(LSQ, "received invalidation for addr:%#x\n",
374 pkt->getAddr());
375 for (ThreadID tid = 0; tid < numThreads; tid++) {
376 thread[tid].checkSnoop(pkt);
377 }
378 }
379}
380
381template<class Impl>
382int
383LSQ<Impl>::getCount()
384{
385 unsigned total = 0;
386
387 list<ThreadID>::iterator threads = activeThreads->begin();
388 list<ThreadID>::iterator end = activeThreads->end();
389
390 while (threads != end) {
391 ThreadID tid = *threads++;
392
393 total += getCount(tid);
394 }
395
396 return total;
397}
398
399template<class Impl>
400int
401LSQ<Impl>::numLoads()
402{
403 unsigned total = 0;
404
405 list<ThreadID>::iterator threads = activeThreads->begin();
406 list<ThreadID>::iterator end = activeThreads->end();
407
408 while (threads != end) {
409 ThreadID tid = *threads++;
410
411 total += numLoads(tid);
412 }
413
414 return total;
415}
416
417template<class Impl>
418int
419LSQ<Impl>::numStores()
420{
421 unsigned total = 0;
422
423 list<ThreadID>::iterator threads = activeThreads->begin();
424 list<ThreadID>::iterator end = activeThreads->end();
425
426 while (threads != end) {
427 ThreadID tid = *threads++;
428
429 total += thread[tid].numStores();
430 }
431
432 return total;
433}
434
435template<class Impl>
436unsigned
436LSQ::numFreeEntries()
437LSQ<Impl>::numFreeLoadEntries()
437{
438 unsigned total = 0;
439
440 list<ThreadID>::iterator threads = activeThreads->begin();
441 list<ThreadID>::iterator end = activeThreads->end();
442
443 while (threads != end) {
444 ThreadID tid = *threads++;
445
438{
439 unsigned total = 0;
440
441 list<ThreadID>::iterator threads = activeThreads->begin();
442 list<ThreadID>::iterator end = activeThreads->end();
443
444 while (threads != end) {
445 ThreadID tid = *threads++;
446
446 total += thread[tid].numFreeEntries();
447 total += thread[tid].numFreeLoadEntries();
447 }
448
449 return total;
450}
451
452template<class Impl>
453unsigned
448 }
449
450 return total;
451}
452
453template<class Impl>
454unsigned
454LSQ<Impl>::numFreeEntries(ThreadID tid)
455LSQ<Impl>::numFreeStoreEntries()
455{
456{
456 //if (lsqPolicy == Dynamic)
457 //return numFreeEntries();
458 //else
459 return thread[tid].numFreeEntries();
457 unsigned total = 0;
458
459 list<ThreadID>::iterator threads = activeThreads->begin();
460 list<ThreadID>::iterator end = activeThreads->end();
461
462 while (threads != end) {
463 ThreadID tid = *threads++;
464
465 total += thread[tid].numFreeStoreEntries();
466 }
467
468 return total;
460}
461
462template<class Impl>
469}
470
471template<class Impl>
472unsigned
473LSQ<Impl>::numFreeLoadEntries(ThreadID tid)
474{
475 return thread[tid].numFreeLoadEntries();
476}
477
478template<class Impl>
479unsigned
480LSQ<Impl>::numFreeStoreEntries(ThreadID tid)
481{
482 return thread[tid].numFreeStoreEntries();
483}
484
485template<class Impl>
463bool
464LSQ<Impl>::isFull()
465{
466 list<ThreadID>::iterator threads = activeThreads->begin();
467 list<ThreadID>::iterator end = activeThreads->end();
468
469 while (threads != end) {
470 ThreadID tid = *threads++;
471
472 if (!(thread[tid].lqFull() || thread[tid].sqFull()))
473 return false;
474 }
475
476 return true;
477}
478
479template<class Impl>
480bool
481LSQ<Impl>::isFull(ThreadID tid)
482{
483 //@todo: Change to Calculate All Entries for
484 //Dynamic Policy
485 if (lsqPolicy == Dynamic)
486 return isFull();
487 else
488 return thread[tid].lqFull() || thread[tid].sqFull();
489}
490
491template<class Impl>
492bool
493LSQ<Impl>::isEmpty() const
494{
495 return lqEmpty() && sqEmpty();
496}
497
498template<class Impl>
499bool
500LSQ<Impl>::lqEmpty() const
501{
502 list<ThreadID>::const_iterator threads = activeThreads->begin();
503 list<ThreadID>::const_iterator end = activeThreads->end();
504
505 while (threads != end) {
506 ThreadID tid = *threads++;
507
508 if (!thread[tid].lqEmpty())
509 return false;
510 }
511
512 return true;
513}
514
515template<class Impl>
516bool
517LSQ<Impl>::sqEmpty() const
518{
519 list<ThreadID>::const_iterator threads = activeThreads->begin();
520 list<ThreadID>::const_iterator end = activeThreads->end();
521
522 while (threads != end) {
523 ThreadID tid = *threads++;
524
525 if (!thread[tid].sqEmpty())
526 return false;
527 }
528
529 return true;
530}
531
532template<class Impl>
533bool
534LSQ<Impl>::lqFull()
535{
536 list<ThreadID>::iterator threads = activeThreads->begin();
537 list<ThreadID>::iterator end = activeThreads->end();
538
539 while (threads != end) {
540 ThreadID tid = *threads++;
541
542 if (!thread[tid].lqFull())
543 return false;
544 }
545
546 return true;
547}
548
549template<class Impl>
550bool
551LSQ<Impl>::lqFull(ThreadID tid)
552{
553 //@todo: Change to Calculate All Entries for
554 //Dynamic Policy
555 if (lsqPolicy == Dynamic)
556 return lqFull();
557 else
558 return thread[tid].lqFull();
559}
560
561template<class Impl>
562bool
563LSQ<Impl>::sqFull()
564{
565 list<ThreadID>::iterator threads = activeThreads->begin();
566 list<ThreadID>::iterator end = activeThreads->end();
567
568 while (threads != end) {
569 ThreadID tid = *threads++;
570
571 if (!sqFull(tid))
572 return false;
573 }
574
575 return true;
576}
577
578template<class Impl>
579bool
580LSQ<Impl>::sqFull(ThreadID tid)
581{
582 //@todo: Change to Calculate All Entries for
583 //Dynamic Policy
584 if (lsqPolicy == Dynamic)
585 return sqFull();
586 else
587 return thread[tid].sqFull();
588}
589
590template<class Impl>
591bool
592LSQ<Impl>::isStalled()
593{
594 list<ThreadID>::iterator threads = activeThreads->begin();
595 list<ThreadID>::iterator end = activeThreads->end();
596
597 while (threads != end) {
598 ThreadID tid = *threads++;
599
600 if (!thread[tid].isStalled())
601 return false;
602 }
603
604 return true;
605}
606
607template<class Impl>
608bool
609LSQ<Impl>::isStalled(ThreadID tid)
610{
611 if (lsqPolicy == Dynamic)
612 return isStalled();
613 else
614 return thread[tid].isStalled();
615}
616
617template<class Impl>
618bool
619LSQ<Impl>::hasStoresToWB()
620{
621 list<ThreadID>::iterator threads = activeThreads->begin();
622 list<ThreadID>::iterator end = activeThreads->end();
623
624 while (threads != end) {
625 ThreadID tid = *threads++;
626
627 if (hasStoresToWB(tid))
628 return true;
629 }
630
631 return false;
632}
633
634template<class Impl>
635bool
636LSQ<Impl>::willWB()
637{
638 list<ThreadID>::iterator threads = activeThreads->begin();
639 list<ThreadID>::iterator end = activeThreads->end();
640
641 while (threads != end) {
642 ThreadID tid = *threads++;
643
644 if (willWB(tid))
645 return true;
646 }
647
648 return false;
649}
650
651template<class Impl>
652void
653LSQ<Impl>::dumpInsts() const
654{
655 list<ThreadID>::const_iterator threads = activeThreads->begin();
656 list<ThreadID>::const_iterator end = activeThreads->end();
657
658 while (threads != end) {
659 ThreadID tid = *threads++;
660
661 thread[tid].dumpInsts();
662 }
663}
664
665#endif//__CPU_O3_LSQ_IMPL_HH__
486bool
487LSQ<Impl>::isFull()
488{
489 list<ThreadID>::iterator threads = activeThreads->begin();
490 list<ThreadID>::iterator end = activeThreads->end();
491
492 while (threads != end) {
493 ThreadID tid = *threads++;
494
495 if (!(thread[tid].lqFull() || thread[tid].sqFull()))
496 return false;
497 }
498
499 return true;
500}
501
502template<class Impl>
503bool
504LSQ<Impl>::isFull(ThreadID tid)
505{
506 //@todo: Change to Calculate All Entries for
507 //Dynamic Policy
508 if (lsqPolicy == Dynamic)
509 return isFull();
510 else
511 return thread[tid].lqFull() || thread[tid].sqFull();
512}
513
514template<class Impl>
515bool
516LSQ<Impl>::isEmpty() const
517{
518 return lqEmpty() && sqEmpty();
519}
520
521template<class Impl>
522bool
523LSQ<Impl>::lqEmpty() const
524{
525 list<ThreadID>::const_iterator threads = activeThreads->begin();
526 list<ThreadID>::const_iterator end = activeThreads->end();
527
528 while (threads != end) {
529 ThreadID tid = *threads++;
530
531 if (!thread[tid].lqEmpty())
532 return false;
533 }
534
535 return true;
536}
537
538template<class Impl>
539bool
540LSQ<Impl>::sqEmpty() const
541{
542 list<ThreadID>::const_iterator threads = activeThreads->begin();
543 list<ThreadID>::const_iterator end = activeThreads->end();
544
545 while (threads != end) {
546 ThreadID tid = *threads++;
547
548 if (!thread[tid].sqEmpty())
549 return false;
550 }
551
552 return true;
553}
554
555template<class Impl>
556bool
557LSQ<Impl>::lqFull()
558{
559 list<ThreadID>::iterator threads = activeThreads->begin();
560 list<ThreadID>::iterator end = activeThreads->end();
561
562 while (threads != end) {
563 ThreadID tid = *threads++;
564
565 if (!thread[tid].lqFull())
566 return false;
567 }
568
569 return true;
570}
571
572template<class Impl>
573bool
574LSQ<Impl>::lqFull(ThreadID tid)
575{
576 //@todo: Change to Calculate All Entries for
577 //Dynamic Policy
578 if (lsqPolicy == Dynamic)
579 return lqFull();
580 else
581 return thread[tid].lqFull();
582}
583
584template<class Impl>
585bool
586LSQ<Impl>::sqFull()
587{
588 list<ThreadID>::iterator threads = activeThreads->begin();
589 list<ThreadID>::iterator end = activeThreads->end();
590
591 while (threads != end) {
592 ThreadID tid = *threads++;
593
594 if (!sqFull(tid))
595 return false;
596 }
597
598 return true;
599}
600
601template<class Impl>
602bool
603LSQ<Impl>::sqFull(ThreadID tid)
604{
605 //@todo: Change to Calculate All Entries for
606 //Dynamic Policy
607 if (lsqPolicy == Dynamic)
608 return sqFull();
609 else
610 return thread[tid].sqFull();
611}
612
613template<class Impl>
614bool
615LSQ<Impl>::isStalled()
616{
617 list<ThreadID>::iterator threads = activeThreads->begin();
618 list<ThreadID>::iterator end = activeThreads->end();
619
620 while (threads != end) {
621 ThreadID tid = *threads++;
622
623 if (!thread[tid].isStalled())
624 return false;
625 }
626
627 return true;
628}
629
630template<class Impl>
631bool
632LSQ<Impl>::isStalled(ThreadID tid)
633{
634 if (lsqPolicy == Dynamic)
635 return isStalled();
636 else
637 return thread[tid].isStalled();
638}
639
640template<class Impl>
641bool
642LSQ<Impl>::hasStoresToWB()
643{
644 list<ThreadID>::iterator threads = activeThreads->begin();
645 list<ThreadID>::iterator end = activeThreads->end();
646
647 while (threads != end) {
648 ThreadID tid = *threads++;
649
650 if (hasStoresToWB(tid))
651 return true;
652 }
653
654 return false;
655}
656
657template<class Impl>
658bool
659LSQ<Impl>::willWB()
660{
661 list<ThreadID>::iterator threads = activeThreads->begin();
662 list<ThreadID>::iterator end = activeThreads->end();
663
664 while (threads != end) {
665 ThreadID tid = *threads++;
666
667 if (willWB(tid))
668 return true;
669 }
670
671 return false;
672}
673
674template<class Impl>
675void
676LSQ<Impl>::dumpInsts() const
677{
678 list<ThreadID>::const_iterator threads = activeThreads->begin();
679 list<ThreadID>::const_iterator end = activeThreads->end();
680
681 while (threads != end) {
682 ThreadID tid = *threads++;
683
684 thread[tid].dumpInsts();
685 }
686}
687
688#endif//__CPU_O3_LSQ_IMPL_HH__