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-rw-r--r--src/mem/ruby/system/Sequencer.cc155
1 files changed, 132 insertions, 23 deletions
diff --git a/src/mem/ruby/system/Sequencer.cc b/src/mem/ruby/system/Sequencer.cc
index 43b0df1b1..23efb9a0c 100644
--- a/src/mem/ruby/system/Sequencer.cc
+++ b/src/mem/ruby/system/Sequencer.cc
@@ -46,7 +46,6 @@
#include "SubBlock.hh"
#include "Protocol.hh"
#include "Map.hh"
-#include "interface.hh"
Sequencer::Sequencer(AbstractChip* chip_ptr, int version) {
m_chip_ptr = chip_ptr;
@@ -597,14 +596,6 @@ void Sequencer::hitCallback(const CacheMsg& request, DataBlock& data, GenericMac
if (miss_latency != 0) {
g_system_ptr->getProfiler()->missLatency(miss_latency, type, respondingMach);
-#if 0
- uinteger_t tick = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "tick"));
- uinteger_t tick_cmpr = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "tick_cmpr"));
- uinteger_t stick = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "stick"));
- uinteger_t stick_cmpr = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "stick_cmpr"));
- cout << "END PROC " << m_version << hex << " tick = " << tick << " tick_cmpr = " << tick_cmpr << " stick = " << stick << " stick_cmpr = " << stick_cmpr << " cycle = "<< g_eventQueue_ptr->getTime() << dec << endl;
-#endif
-
}
bool write =
@@ -624,7 +615,7 @@ void Sequencer::hitCallback(const CacheMsg& request, DataBlock& data, GenericMac
m_chip_ptr->m_L1Cache_storeBuffer_vec[m_version]->updateSubBlock(subblock);
}
- // Call into the Driver (Tester or Simics) and let it read and/or modify the sub-block
+ // Call into the Driver and let it read and/or modify the sub-block
g_system_ptr->getDriver()->hitCallback(m_chip_ptr->getID()*RubyConfig::numberOfProcsPerChip()+m_version, subblock, type, threadID);
// If the request was a Store or Atomic, apply the changes in the SubBlock to the DataBlock
@@ -636,6 +627,130 @@ void Sequencer::hitCallback(const CacheMsg& request, DataBlock& data, GenericMac
}
}
+void Sequencer::readConflictCallback(const Address& address) {
+ // process oldest thread first
+ int thread = -1;
+ Time oldest_time = 0;
+ int smt_threads = RubyConfig::numberofSMTThreads();
+ for(int t=0; t < smt_threads; ++t){
+ if(m_readRequestTable_ptr[t]->exist(address)){
+ CacheMsg & request = m_readRequestTable_ptr[t]->lookup(address);
+ if(thread == -1 || (request.getTime() < oldest_time) ){
+ thread = t;
+ oldest_time = request.getTime();
+ }
+ }
+ }
+ // make sure we found an oldest thread
+ ASSERT(thread != -1);
+
+ CacheMsg & request = m_readRequestTable_ptr[thread]->lookup(address);
+
+ readConflictCallback(address, GenericMachineType_NULL, thread);
+}
+
+void Sequencer::readConflictCallback(const Address& address, GenericMachineType respondingMach, int thread) {
+ assert(address == line_address(address));
+ assert(m_readRequestTable_ptr[thread]->exist(line_address(address)));
+
+ CacheMsg request = m_readRequestTable_ptr[thread]->lookup(address);
+ assert( request.getThreadID() == thread );
+ removeRequest(request);
+
+ assert((request.getType() == CacheRequestType_LD) ||
+ (request.getType() == CacheRequestType_LD_XACT) ||
+ (request.getType() == CacheRequestType_IFETCH)
+ );
+
+ conflictCallback(request, respondingMach, thread);
+}
+
+void Sequencer::writeConflictCallback(const Address& address) {
+ // process oldest thread first
+ int thread = -1;
+ Time oldest_time = 0;
+ int smt_threads = RubyConfig::numberofSMTThreads();
+ for(int t=0; t < smt_threads; ++t){
+ if(m_writeRequestTable_ptr[t]->exist(address)){
+ CacheMsg & request = m_writeRequestTable_ptr[t]->lookup(address);
+ if(thread == -1 || (request.getTime() < oldest_time) ){
+ thread = t;
+ oldest_time = request.getTime();
+ }
+ }
+ }
+ // make sure we found an oldest thread
+ ASSERT(thread != -1);
+
+ CacheMsg & request = m_writeRequestTable_ptr[thread]->lookup(address);
+
+ writeConflictCallback(address, GenericMachineType_NULL, thread);
+}
+
+void Sequencer::writeConflictCallback(const Address& address, GenericMachineType respondingMach, int thread) {
+ assert(address == line_address(address));
+ assert(m_writeRequestTable_ptr[thread]->exist(line_address(address)));
+ CacheMsg request = m_writeRequestTable_ptr[thread]->lookup(address);
+ assert( request.getThreadID() == thread);
+ removeRequest(request);
+
+ assert((request.getType() == CacheRequestType_ST) ||
+ (request.getType() == CacheRequestType_ST_XACT) ||
+ (request.getType() == CacheRequestType_LDX_XACT) ||
+ (request.getType() == CacheRequestType_ATOMIC));
+
+ conflictCallback(request, respondingMach, thread);
+
+}
+
+void Sequencer::conflictCallback(const CacheMsg& request, GenericMachineType respondingMach, int thread) {
+ assert(XACT_MEMORY);
+ int size = request.getSize();
+ Address request_address = request.getAddress();
+ Address request_logical_address = request.getLogicalAddress();
+ Address request_line_address = line_address(request_address);
+ CacheRequestType type = request.getType();
+ int threadID = request.getThreadID();
+ Time issued_time = request.getTime();
+ int logical_proc_no = ((m_chip_ptr->getID() * RubyConfig::numberOfProcsPerChip()) + m_version) * RubyConfig::numberofSMTThreads() + threadID;
+
+ DEBUG_MSG(SEQUENCER_COMP, MedPrio, size);
+
+ assert(g_eventQueue_ptr->getTime() >= issued_time);
+ Time miss_latency = g_eventQueue_ptr->getTime() - issued_time;
+
+ if (PROTOCOL_DEBUG_TRACE) {
+ g_system_ptr->getProfiler()->profileTransition("Seq", (m_chip_ptr->getID()*RubyConfig::numberOfProcsPerChip()+m_version), -1, request.getAddress(), "", "Conflict", "",
+ int_to_string(miss_latency)+" cycles "+GenericMachineType_to_string(respondingMach)+" "+CacheRequestType_to_string(request.getType())+" "+PrefetchBit_to_string(request.getPrefetch()));
+ }
+
+ DEBUG_MSG(SEQUENCER_COMP, MedPrio, request_address);
+ DEBUG_MSG(SEQUENCER_COMP, MedPrio, request.getPrefetch());
+ if (request.getPrefetch() == PrefetchBit_Yes) {
+ DEBUG_MSG(SEQUENCER_COMP, MedPrio, "return");
+ g_system_ptr->getProfiler()->swPrefetchLatency(miss_latency, type, respondingMach);
+ return; // Ignore the software prefetch, don't callback the driver
+ }
+
+ bool write =
+ (type == CacheRequestType_ST) ||
+ (type == CacheRequestType_ST_XACT) ||
+ (type == CacheRequestType_LDX_XACT) ||
+ (type == CacheRequestType_ATOMIC);
+
+ // Copy the correct bytes out of the cache line into the subblock
+ SubBlock subblock(request_address, request_logical_address, size);
+
+ // Call into the Driver
+ g_system_ptr->getDriver()->conflictCallback(m_chip_ptr->getID()*RubyConfig::numberOfProcsPerChip()+m_version, subblock, type, threadID);
+
+ // If the request was a Store or Atomic, apply the changes in the SubBlock to the DataBlock
+ // (This is only triggered for the non-TSO case)
+ if (write) {
+ assert(!TSO);
+ }
+}
+
void Sequencer::printDebug(){
//notify driver of debug
g_system_ptr->getDriver()->printDebug();
@@ -710,7 +825,7 @@ Sequencer::isReady(const CacheMsg& request) const
return true;
}
-// Called by Driver (Simics or Tester).
+// Called by Driver
void
Sequencer::makeRequest(const Packet* pkt, void* data)
{
@@ -786,14 +901,6 @@ bool Sequencer::doRequest(const CacheMsg& request) {
return true;
}
-#if 0
- uinteger_t tick = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "tick"));
- uinteger_t tick_cmpr = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "tick_cmpr"));
- uinteger_t stick = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "stick"));
- uinteger_t stick_cmpr = SIMICS_read_control_register(m_version, SIMICS_get_register_number(m_version, "stick_cmpr"));
- cout << "START PROC " << m_version << hex << " tick = " << tick << " tick_cmpr = " << tick_cmpr << " stick = " << stick << " stick_cmpr = " << stick_cmpr << " cycle = "<< g_eventQueue_ptr->getTime() << dec << endl;;
-#endif
-
if (TSO && (request.getType() == CacheRequestType_LD || request.getType() == CacheRequestType_IFETCH)) {
// See if we can satisfy the load entirely from the store buffer
@@ -936,10 +1043,11 @@ void Sequencer::checkCoherence(const Address& addr) {
bool Sequencer::getRubyMemoryValue(const Address& addr, char* value,
unsigned int size_in_bytes ) {
- if(g_SIMICS){
+ if(g_SIMULATING){
for(unsigned int i=0; i < size_in_bytes; i++) {
- value[i] = SIMICS_read_physical_memory( m_chip_ptr->getID()*RubyConfig::numberOfProcsPerChip()+m_version,
- addr.getAddress() + i, 1 );
+ std::cerr << __FILE__ << "(" << __LINE__ << "): Not implemented. " << std::endl;
+ value[i] = 0; // _read_physical_memory( m_chip_ptr->getID()*RubyConfig::numberOfProcsPerChip()+m_version,
+ // addr.getAddress() + i, 1 );
}
return false; // Do nothing?
} else {
@@ -1006,7 +1114,7 @@ bool Sequencer::setRubyMemoryValue(const Address& addr, char *value,
unsigned int size_in_bytes) {
char test_buffer[64];
- if(g_SIMICS){
+ if(g_SIMULATING){
return false; // Do nothing?
} else {
// idea here is that coherent cache should find the
@@ -1088,3 +1196,4 @@ bool Sequencer::setRubyMemoryValue(const Address& addr, char *value,
return true;
}
}
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-21 06:17:20 +0000