2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3 * Copyright (c) 2009 Advanced Micro Devices, Inc.
6 * Redistribution and use in source and binary forms, with or without
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8 * met: redistributions of source code must retain the above copyright
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10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
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13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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30 #include "cpu/testers/rubytest/Check.hh"
31 #include "debug/RubyTest.hh"
32 #include "mem/ruby/common/SubBlock.hh"
33 #include "mem/ruby/system/Sequencer.hh"
34 #include "mem/ruby/system/System.hh"
36 typedef RubyTester::SenderState SenderState
;
38 Check::Check(const Address
& address
, const Address
& pc
,
39 int _num_writers
, int _num_readers
, RubyTester
* _tester
)
40 : m_num_writers(_num_writers
), m_num_readers(_num_readers
),
43 m_status
= TesterStatus_Idle
;
47 changeAddress(address
);
49 m_access_mode
= RubyAccessMode(random() % RubyAccessMode_NUM
);
56 DPRINTF(RubyTest
, "initiating\n");
59 // currently no protocols support prefetches
60 if (false && (random() & 0xf) == 0) {
61 initiatePrefetch(); // Prefetch from random processor
64 if (m_tester_ptr
->getCheckFlush() && (random() & 0xff) == 0) {
65 initiateFlush(); // issue a Flush request from random processor
68 if (m_status
== TesterStatus_Idle
) {
70 } else if (m_status
== TesterStatus_Ready
) {
73 // Pending - do nothing
75 "initiating action/check - failed: action/check is pending\n");
80 Check::initiatePrefetch()
82 DPRINTF(RubyTest
, "initiating prefetch\n");
84 int index
= random() % m_num_readers
;
85 MasterPort
* port
= m_tester_ptr
->getReadableCpuPort(index
);
88 flags
.set(Request::PREFETCH
);
92 // 1 in 8 chance this will be an exclusive prefetch
93 if ((random() & 0x7) != 0) {
94 cmd
= MemCmd::ReadReq
;
96 // if necessary, make the request an instruction fetch
97 if (m_tester_ptr
->isInstReadableCpuPort(index
)) {
98 flags
.set(Request::INST_FETCH
);
101 cmd
= MemCmd::WriteReq
;
102 flags
.set(Request::PF_EXCLUSIVE
);
105 // Prefetches are assumed to be 0 sized
106 Request
*req
= new Request(m_address
.getAddress(), 0, flags
,
107 m_tester_ptr
->masterId(), curTick(), m_pc
.getAddress());
108 req
->setThreadContext(index
, 0);
110 PacketPtr pkt
= new Packet(req
, cmd
);
112 // push the subblock onto the sender state. The sequencer will
113 // update the subblock on the return
114 pkt
->senderState
= new SenderState(m_address
, req
->getSize());
116 if (port
->sendTimingReq(pkt
)) {
117 DPRINTF(RubyTest
, "successfully initiated prefetch.\n");
119 // If the packet did not issue, must delete
120 delete pkt
->senderState
;
125 "prefetch initiation failed because Port was busy.\n");
130 Check::initiateFlush()
133 DPRINTF(RubyTest
, "initiating Flush\n");
135 int index
= random() % m_num_writers
;
136 MasterPort
* port
= m_tester_ptr
->getWritableCpuPort(index
);
138 Request::Flags flags
;
140 Request
*req
= new Request(m_address
.getAddress(), CHECK_SIZE
, flags
,
141 m_tester_ptr
->masterId(), curTick(), m_pc
.getAddress());
145 cmd
= MemCmd::FlushReq
;
147 PacketPtr pkt
= new Packet(req
, cmd
);
149 // push the subblock onto the sender state. The sequencer will
150 // update the subblock on the return
151 pkt
->senderState
= new SenderState(m_address
, req
->getSize());
153 if (port
->sendTimingReq(pkt
)) {
154 DPRINTF(RubyTest
, "initiating Flush - successful\n");
159 Check::initiateAction()
161 DPRINTF(RubyTest
, "initiating Action\n");
162 assert(m_status
== TesterStatus_Idle
);
164 int index
= random() % m_num_writers
;
165 MasterPort
* port
= m_tester_ptr
->getWritableCpuPort(index
);
167 Request::Flags flags
;
169 // Create the particular address for the next byte to be written
170 Address
writeAddr(m_address
.getAddress() + m_store_count
);
172 // Stores are assumed to be 1 byte-sized
173 Request
*req
= new Request(writeAddr
.getAddress(), 1, flags
,
174 m_tester_ptr
->masterId(), curTick(),
177 req
->setThreadContext(index
, 0);
180 // 1 out of 8 chance, issue an atomic rather than a write
181 // if ((random() & 0x7) == 0) {
182 // cmd = MemCmd::SwapReq;
184 cmd
= MemCmd::WriteReq
;
187 PacketPtr pkt
= new Packet(req
, cmd
);
188 uint8_t *writeData
= new uint8_t;
189 *writeData
= m_value
+ m_store_count
;
190 pkt
->dataDynamic(writeData
);
192 DPRINTF(RubyTest
, "data 0x%x check 0x%x\n",
193 *(pkt
->getPtr
<uint8_t>()), *writeData
);
195 // push the subblock onto the sender state. The sequencer will
196 // update the subblock on the return
197 pkt
->senderState
= new SenderState(writeAddr
, req
->getSize());
199 if (port
->sendTimingReq(pkt
)) {
200 DPRINTF(RubyTest
, "initiating action - successful\n");
201 DPRINTF(RubyTest
, "status before action update: %s\n",
202 (TesterStatus_to_string(m_status
)).c_str());
203 m_status
= TesterStatus_Action_Pending
;
205 // If the packet did not issue, must delete
206 // Note: No need to delete the data, the packet destructor
208 delete pkt
->senderState
;
212 DPRINTF(RubyTest
, "failed to initiate action - sequencer not ready\n");
215 DPRINTF(RubyTest
, "status after action update: %s\n",
216 (TesterStatus_to_string(m_status
)).c_str());
220 Check::initiateCheck()
222 DPRINTF(RubyTest
, "Initiating Check\n");
223 assert(m_status
== TesterStatus_Ready
);
225 int index
= random() % m_num_readers
;
226 MasterPort
* port
= m_tester_ptr
->getReadableCpuPort(index
);
228 Request::Flags flags
;
230 // If necessary, make the request an instruction fetch
231 if (m_tester_ptr
->isInstReadableCpuPort(index
)) {
232 flags
.set(Request::INST_FETCH
);
235 // Checks are sized depending on the number of bytes written
236 Request
*req
= new Request(m_address
.getAddress(), CHECK_SIZE
, flags
,
237 m_tester_ptr
->masterId(), curTick(), m_pc
.getAddress());
239 req
->setThreadContext(index
, 0);
240 PacketPtr pkt
= new Packet(req
, MemCmd::ReadReq
);
241 uint8_t *dataArray
= new uint8_t[CHECK_SIZE
];
242 pkt
->dataDynamicArray(dataArray
);
244 // push the subblock onto the sender state. The sequencer will
245 // update the subblock on the return
246 pkt
->senderState
= new SenderState(m_address
, req
->getSize());
248 if (port
->sendTimingReq(pkt
)) {
249 DPRINTF(RubyTest
, "initiating check - successful\n");
250 DPRINTF(RubyTest
, "status before check update: %s\n",
251 TesterStatus_to_string(m_status
).c_str());
252 m_status
= TesterStatus_Check_Pending
;
254 // If the packet did not issue, must delete
255 // Note: No need to delete the data, the packet destructor
257 delete pkt
->senderState
;
261 DPRINTF(RubyTest
, "failed to initiate check - cpu port not ready\n");
264 DPRINTF(RubyTest
, "status after check update: %s\n",
265 TesterStatus_to_string(m_status
).c_str());
269 Check::performCallback(NodeID proc
, SubBlock
* data
, Cycles curTime
)
271 Address address
= data
->getAddress();
273 // This isn't exactly right since we now have multi-byte checks
274 // assert(getAddress() == address);
276 assert(getAddress().getLineAddress() == address
.getLineAddress());
277 assert(data
!= NULL
);
279 DPRINTF(RubyTest
, "RubyTester Callback\n");
282 if (m_status
== TesterStatus_Action_Pending
) {
283 DPRINTF(RubyTest
, "Action callback write value: %d, currently %d\n",
284 (m_value
+ m_store_count
), data
->getByte(0));
285 // Perform store one byte at a time
286 data
->setByte(0, (m_value
+ m_store_count
));
288 if (m_store_count
== CHECK_SIZE
) {
289 m_status
= TesterStatus_Ready
;
291 m_status
= TesterStatus_Idle
;
293 DPRINTF(RubyTest
, "Action callback return data now %d\n",
295 } else if (m_status
== TesterStatus_Check_Pending
) {
296 DPRINTF(RubyTest
, "Check callback\n");
297 // Perform load/check
298 for (int byte_number
=0; byte_number
<CHECK_SIZE
; byte_number
++) {
299 if (uint8_t(m_value
+ byte_number
) != data
->getByte(byte_number
)) {
300 panic("Action/check failure: proc: %d address: %s data: %s "
301 "byte_number: %d m_value+byte_number: %d byte: %d %s"
303 proc
, address
, data
, byte_number
,
304 (int)m_value
+ byte_number
,
305 (int)data
->getByte(byte_number
), *this, curTime
);
308 DPRINTF(RubyTest
, "Action/check success\n");
311 // successful check complete, increment complete
312 m_tester_ptr
->incrementCheckCompletions();
314 m_status
= TesterStatus_Idle
;
318 panic("Unexpected TesterStatus: %s proc: %d data: %s m_status: %s "
319 "time: %d\n", *this, proc
, data
, m_status
, curTime
);
322 DPRINTF(RubyTest
, "proc: %d, Address: 0x%x\n", proc
,
323 getAddress().getLineAddress());
324 DPRINTF(RubyTest
, "Callback done\n");
329 Check::changeAddress(const Address
& address
)
331 assert(m_status
== TesterStatus_Idle
|| m_status
== TesterStatus_Ready
);
332 m_status
= TesterStatus_Idle
;
340 assert(m_status
== TesterStatus_Idle
);
341 m_status
= TesterStatus_Idle
;
342 m_value
= random() & 0xff; // One byte
347 Check::pickInitiatingNode()
349 assert(m_status
== TesterStatus_Idle
|| m_status
== TesterStatus_Ready
);
350 m_status
= TesterStatus_Idle
;
351 m_initiatingNode
= (random() % m_num_writers
);
352 DPRINTF(RubyTest
, "picked initiating node %d\n", m_initiatingNode
);
357 Check::print(std::ostream
& out
) const
360 << m_address
<< ", value: "
361 << (int)m_value
<< ", status: "
362 << m_status
<< ", initiating node: "
363 << m_initiatingNode
<< ", store_count: "
365 << "]" << std::flush
;
372 "[%#x, value: %d, status: %s, initiating node: %d, store_count: %d]\n",
373 m_address
.getAddress(), (int)m_value
,
374 TesterStatus_to_string(m_status
).c_str(),
375 m_initiatingNode
, m_store_count
);