1456 lines
47 KiB
Text
1456 lines
47 KiB
Text
|
|
/*
|
|
* Copyright (c) 1999-2005 Mark D. Hill and David A. Wood
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
machine(L2Cache, "Token protocol")
|
|
: int l2_request_latency,
|
|
int l2_response_latency,
|
|
int N_tokens,
|
|
bool filtering_enabled
|
|
{
|
|
|
|
// L2 BANK QUEUES
|
|
// From local bank of L2 cache TO the network
|
|
|
|
// this L2 bank -> a local L1 || mod-directory
|
|
MessageBuffer responseFromL2Cache, network="To", virtual_network="1", ordered="false";
|
|
// this L2 bank -> mod-directory
|
|
MessageBuffer GlobalRequestFromL2Cache, network="To", virtual_network="3", ordered="false";
|
|
// this L2 bank -> a local L1
|
|
MessageBuffer L1RequestFromL2Cache, network="To", virtual_network="4", ordered="false";
|
|
|
|
|
|
// FROM the network to this local bank of L2 cache
|
|
|
|
// a local L1 || mod-directory -> this L2 bank
|
|
MessageBuffer responseToL2Cache, network="From", virtual_network="1", ordered="false";
|
|
MessageBuffer persistentToL2Cache, network="From", virtual_network="2", ordered="true";
|
|
// mod-directory -> this L2 bank
|
|
MessageBuffer GlobalRequestToL2Cache, network="From", virtual_network="3", ordered="false";
|
|
// a local L1 -> this L2 bank
|
|
MessageBuffer L1RequestToL2Cache, network="From", virtual_network="4", ordered="false";
|
|
|
|
// STATES
|
|
enumeration(State, desc="L2 Cache states", default="L2Cache_State_I") {
|
|
// Base states
|
|
NP, desc="Not Present";
|
|
I, desc="Idle";
|
|
S, desc="Shared, not present in any local L1s";
|
|
O, desc="Owned, not present in any L1s";
|
|
M, desc="Modified, not present in any L1s";
|
|
|
|
// Locked states
|
|
I_L, "I^L", desc="Invalid, Locked";
|
|
S_L, "S^L", desc="Shared, Locked";
|
|
}
|
|
|
|
// EVENTS
|
|
enumeration(Event, desc="Cache events") {
|
|
|
|
// Requests
|
|
L1_GETS, desc="local L1 GETS request";
|
|
L1_GETS_Last_Token, desc="local L1 GETS request";
|
|
L1_GETX, desc="local L1 GETX request";
|
|
L1_INV, desc="L1 no longer has tokens";
|
|
Transient_GETX, desc="A GetX from another processor";
|
|
Transient_GETS, desc="A GetS from another processor";
|
|
Transient_GETS_Last_Token, desc="A GetS from another processor";
|
|
|
|
// events initiated by this L2
|
|
L2_Replacement, desc="L2 Replacement", format="!r";
|
|
|
|
// events of external L2 responses
|
|
|
|
// Responses
|
|
Writeback_Tokens, desc="Received a writeback from L1 with only tokens (no data)";
|
|
Writeback_Shared_Data, desc="Received a writeback from L1 that includes clean data";
|
|
Writeback_All_Tokens, desc="Received a writeback from L1";
|
|
Writeback_Owned, desc="Received a writeback from L1";
|
|
|
|
|
|
Data_Shared, desc="Received a data message, we are now a sharer";
|
|
Data_Owner, desc="Received a data message, we are now the owner";
|
|
Data_All_Tokens, desc="Received a data message, we are now the owner, we now have all the tokens";
|
|
Ack, desc="Received an ack message";
|
|
Ack_All_Tokens, desc="Received an ack message, we now have all the tokens";
|
|
|
|
// Lock/Unlock
|
|
Persistent_GETX, desc="Another processor has priority to read/write";
|
|
Persistent_GETS, desc="Another processor has priority to read";
|
|
Own_Lock_or_Unlock, desc="This processor now has priority";
|
|
}
|
|
|
|
// TYPES
|
|
|
|
// CacheEntry
|
|
structure(Entry, desc="...", interface="AbstractCacheEntry") {
|
|
State CacheState, desc="cache state";
|
|
bool Dirty, desc="Is the data dirty (different than memory)?";
|
|
int Tokens, desc="The number of tokens we're holding for the line";
|
|
DataBlock DataBlk, desc="data for the block";
|
|
}
|
|
|
|
structure(DirEntry, desc="...") {
|
|
Set Sharers, desc="Set of the internal processors that want the block in shared state";
|
|
bool exclusive, default="false", desc="if local exclusive is likely";
|
|
}
|
|
|
|
external_type(CacheMemory) {
|
|
bool cacheAvail(Address);
|
|
Address cacheProbe(Address);
|
|
void allocate(Address, Entry);
|
|
void deallocate(Address);
|
|
Entry lookup(Address);
|
|
void changePermission(Address, AccessPermission);
|
|
bool isTagPresent(Address);
|
|
void setMRU(Address);
|
|
}
|
|
|
|
external_type(PerfectCacheMemory) {
|
|
void allocate(Address);
|
|
void deallocate(Address);
|
|
DirEntry lookup(Address);
|
|
bool isTagPresent(Address);
|
|
}
|
|
|
|
external_type(PersistentTable) {
|
|
void persistentRequestLock(Address, MachineID, AccessType);
|
|
void persistentRequestUnlock(Address, MachineID);
|
|
MachineID findSmallest(Address);
|
|
AccessType typeOfSmallest(Address);
|
|
void markEntries(Address);
|
|
bool isLocked(Address);
|
|
int countStarvingForAddress(Address);
|
|
int countReadStarvingForAddress(Address);
|
|
}
|
|
|
|
CacheMemory L2cacheMemory, factory='RubySystem::getCache(m_cfg["cache"])';
|
|
|
|
PersistentTable persistentTable;
|
|
PerfectCacheMemory localDirectory, template_hack="<L2Cache_DirEntry>";
|
|
|
|
Entry getL2CacheEntry(Address addr), return_by_ref="yes" {
|
|
if (L2cacheMemory.isTagPresent(addr)) {
|
|
return L2cacheMemory[addr];
|
|
}
|
|
assert(false);
|
|
return L2cacheMemory[addr];
|
|
}
|
|
|
|
int getTokens(Address addr) {
|
|
if (L2cacheMemory.isTagPresent(addr)) {
|
|
return L2cacheMemory[addr].Tokens;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void changePermission(Address addr, AccessPermission permission) {
|
|
if (L2cacheMemory.isTagPresent(addr)) {
|
|
return L2cacheMemory.changePermission(addr, permission);
|
|
}
|
|
}
|
|
|
|
bool isCacheTagPresent(Address addr) {
|
|
return (L2cacheMemory.isTagPresent(addr) );
|
|
}
|
|
|
|
State getState(Address addr) {
|
|
if (isCacheTagPresent(addr)) {
|
|
return getL2CacheEntry(addr).CacheState;
|
|
} else if (persistentTable.isLocked(addr) == true) {
|
|
return State:I_L;
|
|
} else {
|
|
return State:NP;
|
|
}
|
|
}
|
|
|
|
string getStateStr(Address addr) {
|
|
return L2Cache_State_to_string(getState(addr));
|
|
}
|
|
|
|
void setState(Address addr, State state) {
|
|
|
|
|
|
if (isCacheTagPresent(addr)) {
|
|
// Make sure the token count is in range
|
|
assert(getL2CacheEntry(addr).Tokens >= 0);
|
|
assert(getL2CacheEntry(addr).Tokens <= max_tokens());
|
|
|
|
// Make sure we have no tokens in L
|
|
if ((state == State:I_L) ) {
|
|
if (isCacheTagPresent(addr)) {
|
|
assert(getL2CacheEntry(addr).Tokens == 0);
|
|
}
|
|
}
|
|
|
|
// in M and E you have all the tokens
|
|
if (state == State:M ) {
|
|
assert(getL2CacheEntry(addr).Tokens == max_tokens());
|
|
}
|
|
|
|
// in NP you have no tokens
|
|
if (state == State:NP) {
|
|
assert(getL2CacheEntry(addr).Tokens == 0);
|
|
}
|
|
|
|
// You have at least one token in S-like states
|
|
if (state == State:S ) {
|
|
assert(getL2CacheEntry(addr).Tokens > 0);
|
|
}
|
|
|
|
// You have at least half the token in O-like states
|
|
if (state == State:O ) {
|
|
assert(getL2CacheEntry(addr).Tokens >= 1); // Must have at least one token
|
|
// assert(getL2CacheEntry(addr).Tokens >= (max_tokens() / 2)); // Only mostly true; this might not always hold
|
|
}
|
|
|
|
getL2CacheEntry(addr).CacheState := state;
|
|
|
|
// Set permission
|
|
if (state == State:I) {
|
|
changePermission(addr, AccessPermission:Invalid);
|
|
} else if (state == State:S || state == State:O ) {
|
|
changePermission(addr, AccessPermission:Read_Only);
|
|
} else if (state == State:M ) {
|
|
changePermission(addr, AccessPermission:Read_Write);
|
|
} else {
|
|
changePermission(addr, AccessPermission:Invalid);
|
|
}
|
|
}
|
|
}
|
|
|
|
void removeSharer(Address addr, NodeID id) {
|
|
|
|
if (localDirectory.isTagPresent(addr)) {
|
|
localDirectory[addr].Sharers.remove(id);
|
|
if (localDirectory[addr].Sharers.count() == 0) {
|
|
localDirectory.deallocate(addr);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool sharersExist(Address addr) {
|
|
if (localDirectory.isTagPresent(addr)) {
|
|
if (localDirectory[addr].Sharers.count() > 0) {
|
|
return true;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool exclusiveExists(Address addr) {
|
|
if (localDirectory.isTagPresent(addr)) {
|
|
if (localDirectory[addr].exclusive == true) {
|
|
return true;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// assumes that caller will check to make sure tag is present
|
|
Set getSharers(Address addr) {
|
|
return localDirectory[addr].Sharers;
|
|
}
|
|
|
|
void setNewWriter(Address addr, NodeID id) {
|
|
if (localDirectory.isTagPresent(addr) == false) {
|
|
localDirectory.allocate(addr);
|
|
}
|
|
localDirectory[addr].Sharers.clear();
|
|
localDirectory[addr].Sharers.add(id);
|
|
localDirectory[addr].exclusive := true;
|
|
}
|
|
|
|
void addNewSharer(Address addr, NodeID id) {
|
|
if (localDirectory.isTagPresent(addr) == false) {
|
|
localDirectory.allocate(addr);
|
|
}
|
|
localDirectory[addr].Sharers.add(id);
|
|
// localDirectory[addr].exclusive := false;
|
|
}
|
|
|
|
void clearExclusiveBitIfExists(Address addr) {
|
|
if (localDirectory.isTagPresent(addr) == true) {
|
|
localDirectory[addr].exclusive := false;
|
|
}
|
|
}
|
|
|
|
// ** OUT_PORTS **
|
|
out_port(globalRequestNetwork_out, RequestMsg, GlobalRequestFromL2Cache);
|
|
out_port(localRequestNetwork_out, RequestMsg, L1RequestFromL2Cache);
|
|
out_port(responseNetwork_out, ResponseMsg, responseFromL2Cache);
|
|
|
|
|
|
|
|
// ** IN_PORTS **
|
|
|
|
// Persistent Network
|
|
in_port(persistentNetwork_in, PersistentMsg, persistentToL2Cache) {
|
|
if (persistentNetwork_in.isReady()) {
|
|
peek(persistentNetwork_in, PersistentMsg) {
|
|
assert(in_msg.Destination.isElement(machineID));
|
|
|
|
if (in_msg.Type == PersistentRequestType:GETX_PERSISTENT) {
|
|
persistentTable.persistentRequestLock(in_msg.Address, in_msg.Requestor, AccessType:Write);
|
|
} else if (in_msg.Type == PersistentRequestType:GETS_PERSISTENT) {
|
|
persistentTable.persistentRequestLock(in_msg.Address, in_msg.Requestor, AccessType:Read);
|
|
} else if (in_msg.Type == PersistentRequestType:DEACTIVATE_PERSISTENT) {
|
|
persistentTable.persistentRequestUnlock(in_msg.Address, in_msg.Requestor);
|
|
} else {
|
|
error("Unexpected message");
|
|
}
|
|
|
|
// React to the message based on the current state of the table
|
|
if (persistentTable.isLocked(in_msg.Address)) {
|
|
|
|
if (persistentTable.typeOfSmallest(in_msg.Address) == AccessType:Read) {
|
|
trigger(Event:Persistent_GETS, in_msg.Address);
|
|
} else {
|
|
trigger(Event:Persistent_GETX, in_msg.Address);
|
|
}
|
|
}
|
|
else {
|
|
trigger(Event:Own_Lock_or_Unlock, in_msg.Address);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Request Network
|
|
in_port(requestNetwork_in, RequestMsg, GlobalRequestToL2Cache) {
|
|
if (requestNetwork_in.isReady()) {
|
|
peek(requestNetwork_in, RequestMsg) {
|
|
assert(in_msg.Destination.isElement(machineID));
|
|
|
|
if (in_msg.Type == CoherenceRequestType:GETX) {
|
|
trigger(Event:Transient_GETX, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceRequestType:GETS) {
|
|
if (L2cacheMemory.isTagPresent(in_msg.Address) && getL2CacheEntry(in_msg.Address).Tokens == 1) {
|
|
trigger(Event:Transient_GETS_Last_Token, in_msg.Address);
|
|
}
|
|
else {
|
|
trigger(Event:Transient_GETS, in_msg.Address);
|
|
}
|
|
} else {
|
|
error("Unexpected message");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
in_port(L1requestNetwork_in, RequestMsg, L1RequestToL2Cache) {
|
|
if (L1requestNetwork_in.isReady()) {
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
assert(in_msg.Destination.isElement(machineID));
|
|
if (in_msg.Type == CoherenceRequestType:GETX) {
|
|
trigger(Event:L1_GETX, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceRequestType:GETS) {
|
|
if (L2cacheMemory.isTagPresent(in_msg.Address) && getL2CacheEntry(in_msg.Address).Tokens == 1) {
|
|
trigger(Event:L1_GETS_Last_Token, in_msg.Address);
|
|
}
|
|
else {
|
|
trigger(Event:L1_GETS, in_msg.Address);
|
|
}
|
|
} else {
|
|
error("Unexpected message");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Response Network
|
|
in_port(responseNetwork_in, ResponseMsg, responseToL2Cache) {
|
|
if (responseNetwork_in.isReady()) {
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
assert(in_msg.Destination.isElement(machineID));
|
|
if (getTokens(in_msg.Address) + in_msg.Tokens != max_tokens()) {
|
|
if (in_msg.Type == CoherenceResponseType:ACK) {
|
|
trigger(Event:Ack, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceResponseType:DATA_OWNER) {
|
|
trigger(Event:Data_Owner, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceResponseType:DATA_SHARED) {
|
|
trigger(Event:Data_Shared, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceResponseType:WB_TOKENS || in_msg.Type == CoherenceResponseType:WB_OWNED || in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
|
|
|
|
if (L2cacheMemory.cacheAvail(in_msg.Address) || L2cacheMemory.isTagPresent(in_msg.Address)) {
|
|
|
|
// either room is available or the block is already present
|
|
|
|
if (in_msg.Type == CoherenceResponseType:WB_TOKENS) {
|
|
assert(in_msg.Dirty == false);
|
|
trigger(Event:Writeback_Tokens, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
|
|
assert(in_msg.Dirty == false);
|
|
trigger(Event:Writeback_Shared_Data, in_msg.Address);
|
|
}
|
|
else if (in_msg.Type == CoherenceResponseType:WB_OWNED) {
|
|
//assert(in_msg.Dirty == false);
|
|
trigger(Event:Writeback_Owned, in_msg.Address);
|
|
}
|
|
}
|
|
else {
|
|
trigger(Event:L2_Replacement, L2cacheMemory.cacheProbe(in_msg.Address));
|
|
}
|
|
} else if (in_msg.Type == CoherenceResponseType:INV) {
|
|
trigger(Event:L1_INV, in_msg.Address);
|
|
} else {
|
|
error("Unexpected message");
|
|
}
|
|
} else {
|
|
if (in_msg.Type == CoherenceResponseType:ACK) {
|
|
trigger(Event:Ack_All_Tokens, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceResponseType:DATA_OWNER || in_msg.Type == CoherenceResponseType:DATA_SHARED) {
|
|
trigger(Event:Data_All_Tokens, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceResponseType:WB_TOKENS || in_msg.Type == CoherenceResponseType:WB_OWNED || in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
|
|
if (L2cacheMemory.cacheAvail(in_msg.Address) || L2cacheMemory.isTagPresent(in_msg.Address)) {
|
|
|
|
// either room is available or the block is already present
|
|
|
|
if (in_msg.Type == CoherenceResponseType:WB_TOKENS) {
|
|
assert(in_msg.Dirty == false);
|
|
assert( (getState(in_msg.Address) != State:NP) && (getState(in_msg.Address) != State:I) );
|
|
trigger(Event:Writeback_All_Tokens, in_msg.Address);
|
|
} else if (in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
|
|
assert(in_msg.Dirty == false);
|
|
trigger(Event:Writeback_All_Tokens, in_msg.Address);
|
|
}
|
|
else if (in_msg.Type == CoherenceResponseType:WB_OWNED) {
|
|
trigger(Event:Writeback_All_Tokens, in_msg.Address);
|
|
}
|
|
}
|
|
else {
|
|
trigger(Event:L2_Replacement, L2cacheMemory.cacheProbe(in_msg.Address));
|
|
}
|
|
} else if (in_msg.Type == CoherenceResponseType:INV) {
|
|
trigger(Event:L1_INV, in_msg.Address);
|
|
} else {
|
|
DEBUG_EXPR(in_msg.Type);
|
|
error("Unexpected message");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// ACTIONS
|
|
|
|
action(a_broadcastLocalRequest, "a", desc="broadcast local request globally") {
|
|
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
|
|
// if this is a retry or no local sharers, broadcast normally
|
|
|
|
// if (in_msg.RetryNum > 0 || (in_msg.Type == CoherenceRequestType:GETX && exclusiveExists(in_msg.Address) == false) || (in_msg.Type == CoherenceRequestType:GETS && sharersExist(in_msg.Address) == false)) {
|
|
enqueue(globalRequestNetwork_out, RequestMsg, latency=l2_request_latency) {
|
|
out_msg.Address := in_msg.Address;
|
|
out_msg.Type := in_msg.Type;
|
|
out_msg.Requestor := in_msg.Requestor;
|
|
out_msg.RequestorMachine := in_msg.RequestorMachine;
|
|
out_msg.RetryNum := in_msg.RetryNum;
|
|
|
|
//
|
|
// If a statically shared L2 cache, then no other L2 caches can
|
|
// store the block
|
|
//
|
|
//out_msg.Destination.broadcast(MachineType:L2Cache);
|
|
//out_msg.Destination.addNetDest(getAllPertinentL2Banks(address));
|
|
//out_msg.Destination.remove(map_L1CacheMachId_to_L2Cache(address, in_msg.Requestor));
|
|
|
|
out_msg.Destination.add(map_Address_to_Directory(address));
|
|
out_msg.MessageSize := MessageSizeType:Request_Control;
|
|
out_msg.AccessMode := in_msg.AccessMode;
|
|
out_msg.Prefetch := in_msg.Prefetch;
|
|
} //enqueue
|
|
// } // if
|
|
|
|
//profile_filter_action(0);
|
|
} // peek
|
|
} //action
|
|
|
|
|
|
action(bb_bounceResponse, "\b", desc="Bounce tokens and data to memory") {
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
// FIXME, should use a 3rd vnet
|
|
enqueue(responseNetwork_out, ResponseMsg, latency="1") {
|
|
out_msg.Address := address;
|
|
out_msg.Type := in_msg.Type;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(map_Address_to_Directory(address));
|
|
out_msg.Tokens := in_msg.Tokens;
|
|
out_msg.MessageSize := in_msg.MessageSize;
|
|
out_msg.DataBlk := in_msg.DataBlk;
|
|
out_msg.Dirty := in_msg.Dirty;
|
|
}
|
|
}
|
|
}
|
|
|
|
action(c_cleanReplacement, "c", desc="Issue clean writeback") {
|
|
if (getL2CacheEntry(address).Tokens > 0) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:ACK;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(map_Address_to_Directory(address));
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
out_msg.MessageSize := MessageSizeType:Writeback_Control;
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
}
|
|
|
|
action(cc_dirtyReplacement, "\c", desc="Issue dirty writeback") {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(map_Address_to_Directory(address));
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := getL2CacheEntry(address).Dirty;
|
|
|
|
if (getL2CacheEntry(address).Dirty) {
|
|
out_msg.MessageSize := MessageSizeType:Writeback_Data;
|
|
out_msg.Type := CoherenceResponseType:DATA_OWNER;
|
|
} else {
|
|
out_msg.MessageSize := MessageSizeType:Writeback_Control;
|
|
out_msg.Type := CoherenceResponseType:ACK_OWNER;
|
|
}
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
|
|
action(d_sendDataWithTokens, "d", desc="Send data and a token from cache to requestor") {
|
|
peek(requestNetwork_in, RequestMsg) {
|
|
if (getL2CacheEntry(address).Tokens > N_tokens) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_SHARED;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
out_msg.Tokens := N_tokens;
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := false;
|
|
out_msg.MessageSize := MessageSizeType:Response_Data;
|
|
}
|
|
getL2CacheEntry(address).Tokens := getL2CacheEntry(address).Tokens - N_tokens;
|
|
}
|
|
else {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_SHARED;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
out_msg.Tokens := 1;
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := false;
|
|
out_msg.MessageSize := MessageSizeType:Response_Data;
|
|
}
|
|
getL2CacheEntry(address).Tokens := getL2CacheEntry(address).Tokens - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
action(dd_sendDataWithAllTokens, "\d", desc="Send data and all tokens from cache to requestor") {
|
|
peek(requestNetwork_in, RequestMsg) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_OWNER;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
assert(getL2CacheEntry(address).Tokens >= 1);
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := getL2CacheEntry(address).Dirty;
|
|
out_msg.MessageSize := MessageSizeType:Response_Data;
|
|
}
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
|
|
action(e_sendAckWithCollectedTokens, "e", desc="Send ack with the tokens we've collected thus far.") {
|
|
if (getL2CacheEntry(address).Tokens > 0) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:ACK;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(persistentTable.findSmallest(address));
|
|
assert(getL2CacheEntry(address).Tokens >= 1);
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
out_msg.MessageSize := MessageSizeType:Response_Control;
|
|
}
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
|
|
action(ee_sendDataWithAllTokens, "\e", desc="Send data and all tokens from cache to starver") {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_OWNER;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(persistentTable.findSmallest(address));
|
|
assert(getL2CacheEntry(address).Tokens >= 1);
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := getL2CacheEntry(address).Dirty;
|
|
out_msg.MessageSize := MessageSizeType:Response_Data;
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
|
|
action(f_sendAckWithAllButOneTokens, "f", desc="Send ack with all our tokens but one to starver.") {
|
|
//assert(persistentTable.findSmallest(address) != id); // Make sure we never bounce tokens to ourself
|
|
assert(getL2CacheEntry(address).Tokens > 0);
|
|
if (getL2CacheEntry(address).Tokens > 1) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:ACK;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(persistentTable.findSmallest(address));
|
|
assert(getL2CacheEntry(address).Tokens >= 1);
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens - 1;
|
|
out_msg.MessageSize := MessageSizeType:Response_Control;
|
|
}
|
|
}
|
|
getL2CacheEntry(address).Tokens := 1;
|
|
}
|
|
|
|
action(ff_sendDataWithAllButOneTokens, "\f", desc="Send data and out tokens but one to starver") {
|
|
//assert(persistentTable.findSmallest(address) != id); // Make sure we never bounce tokens to ourself
|
|
assert(getL2CacheEntry(address).Tokens > 0);
|
|
if (getL2CacheEntry(address).Tokens > 1) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_OWNER;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(persistentTable.findSmallest(address));
|
|
assert(getL2CacheEntry(address).Tokens >= 1);
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens - 1;
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := getL2CacheEntry(address).Dirty;
|
|
out_msg.MessageSize := MessageSizeType:Response_Data;
|
|
}
|
|
getL2CacheEntry(address).Tokens := 1;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
action(gg_bounceResponseToStarver, "\g", desc="Redirect response to starving processor") {
|
|
// assert(persistentTable.isLocked(address));
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
// FIXME, should use a 3rd vnet in some cases
|
|
enqueue(responseNetwork_out, ResponseMsg, latency="1") {
|
|
out_msg.Address := address;
|
|
out_msg.Type := in_msg.Type;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(persistentTable.findSmallest(address));
|
|
out_msg.Tokens := in_msg.Tokens;
|
|
out_msg.DataBlk := in_msg.DataBlk;
|
|
out_msg.Dirty := in_msg.Dirty;
|
|
out_msg.MessageSize := in_msg.MessageSize;
|
|
}
|
|
}
|
|
}
|
|
|
|
action(gg_bounceWBSharedToStarver, "\gg", desc="Redirect response to starving processor") {
|
|
//assert(persistentTable.isLocked(address));
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
// FIXME, should use a 3rd vnet in some cases
|
|
enqueue(responseNetwork_out, ResponseMsg, latency="1") {
|
|
out_msg.Address := address;
|
|
if (in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
|
|
out_msg.Type := CoherenceResponseType:DATA_SHARED;
|
|
} else {
|
|
out_msg.Type := CoherenceResponseType:ACK;
|
|
}
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(persistentTable.findSmallest(address));
|
|
out_msg.Tokens := in_msg.Tokens;
|
|
out_msg.DataBlk := in_msg.DataBlk;
|
|
out_msg.Dirty := in_msg.Dirty;
|
|
out_msg.MessageSize := in_msg.MessageSize;
|
|
}
|
|
}
|
|
}
|
|
|
|
action(gg_bounceWBOwnedToStarver, "\ggg", desc="Redirect response to starving processor") {
|
|
// assert(persistentTable.isLocked(address));
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
// FIXME, should use a 3rd vnet in some cases
|
|
enqueue(responseNetwork_out, ResponseMsg, latency="1") {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_OWNER;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(persistentTable.findSmallest(address));
|
|
out_msg.Tokens := in_msg.Tokens;
|
|
out_msg.DataBlk := in_msg.DataBlk;
|
|
out_msg.Dirty := in_msg.Dirty;
|
|
out_msg.MessageSize := in_msg.MessageSize;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
action(h_updateFilterFromL1HintOrWB, "h", desc="update filter from received writeback") {
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
removeSharer(in_msg.Address, machineIDToNodeID(in_msg.Sender));
|
|
}
|
|
}
|
|
|
|
action(j_forwardTransientRequestToLocalSharers, "j", desc="Forward external transient request to local sharers") {
|
|
peek(requestNetwork_in, RequestMsg) {
|
|
if (filtering_enabled == true && in_msg.RetryNum == 0 && sharersExist(in_msg.Address) == false) {
|
|
//profile_filter_action(1);
|
|
DEBUG_EXPR("filtered message");
|
|
DEBUG_EXPR(in_msg.RetryNum);
|
|
}
|
|
else {
|
|
enqueue(localRequestNetwork_out, RequestMsg, latency=l2_response_latency ) {
|
|
out_msg.Address := in_msg.Address;
|
|
out_msg.Requestor := in_msg.Requestor;
|
|
out_msg.RequestorMachine := in_msg.RequestorMachine;
|
|
|
|
//
|
|
// Currently assuming only one chip so all L1s are local
|
|
//
|
|
//out_msg.Destination := getLocalL1IDs(machineID);
|
|
out_msg.Destination.broadcast(MachineType:L1Cache);
|
|
out_msg.Destination.remove(in_msg.Requestor);
|
|
|
|
out_msg.Type := in_msg.Type;
|
|
out_msg.isLocal := false;
|
|
out_msg.MessageSize := MessageSizeType:Request_Control;
|
|
out_msg.AccessMode := in_msg.AccessMode;
|
|
out_msg.Prefetch := in_msg.Prefetch;
|
|
}
|
|
//profile_filter_action(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
action(k_dataFromL2CacheToL1Requestor, "k", desc="Send data and a token from cache to L1 requestor") {
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
assert(getL2CacheEntry(address).Tokens > 0);
|
|
//enqueue(responseIntraChipL2Network_out, ResponseMsg, latency="L2_to_L1_RESPONSE_LATENCY") {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_SHARED;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := false;
|
|
out_msg.MessageSize := MessageSizeType:ResponseL2hit_Data;
|
|
out_msg.Tokens := 1;
|
|
}
|
|
getL2CacheEntry(address).Tokens := getL2CacheEntry(address).Tokens - 1;
|
|
}
|
|
}
|
|
|
|
action(k_dataOwnerFromL2CacheToL1Requestor, "\k", desc="Send data and a token from cache to L1 requestor") {
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
assert(getL2CacheEntry(address).Tokens > 0);
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_OWNER;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := getL2CacheEntry(address).Dirty;
|
|
out_msg.MessageSize := MessageSizeType:ResponseL2hit_Data;
|
|
out_msg.Tokens := 1;
|
|
}
|
|
getL2CacheEntry(address).Tokens := getL2CacheEntry(address).Tokens - 1;
|
|
}
|
|
}
|
|
|
|
action(k_dataAndAllTokensFromL2CacheToL1Requestor, "\kk", desc="Send data and a token from cache to L1 requestor") {
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
// assert(getL2CacheEntry(address).Tokens == max_tokens());
|
|
//enqueue(responseIntraChipL2Network_out, ResponseMsg, latency="L2_to_L1_RESPONSE_LATENCY") {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:DATA_OWNER;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
out_msg.DataBlk := getL2CacheEntry(address).DataBlk;
|
|
out_msg.Dirty := getL2CacheEntry(address).Dirty;
|
|
out_msg.MessageSize := MessageSizeType:ResponseL2hit_Data;
|
|
//out_msg.Tokens := max_tokens();
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
}
|
|
|
|
action(l_popPersistentQueue, "l", desc="Pop persistent queue.") {
|
|
persistentNetwork_in.dequeue();
|
|
}
|
|
|
|
action(m_popRequestQueue, "m", desc="Pop request queue.") {
|
|
requestNetwork_in.dequeue();
|
|
}
|
|
|
|
action(n_popResponseQueue, "n", desc="Pop response queue") {
|
|
responseNetwork_in.dequeue();
|
|
}
|
|
|
|
action(o_popL1RequestQueue, "o", desc="Pop L1 request queue.") {
|
|
L1requestNetwork_in.dequeue();
|
|
}
|
|
|
|
|
|
action(q_updateTokensFromResponse, "q", desc="Update the token count based on the incoming response message") {
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
assert(in_msg.Tokens != 0);
|
|
getL2CacheEntry(address).Tokens := getL2CacheEntry(address).Tokens + in_msg.Tokens;
|
|
|
|
// this should ideally be in u_writeDataToCache, but Writeback_All_Tokens
|
|
// may not trigger this action.
|
|
if ( (in_msg.Type == CoherenceResponseType:DATA_OWNER || in_msg.Type == CoherenceResponseType:WB_OWNED) && in_msg.Dirty) {
|
|
getL2CacheEntry(address).Dirty := true;
|
|
}
|
|
}
|
|
}
|
|
|
|
action(r_markNewSharer, "r", desc="Mark the new local sharer from local request message") {
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
if (machineIDToMachineType(in_msg.Requestor) == MachineType:L1Cache) {
|
|
if (in_msg.Type == CoherenceRequestType:GETX) {
|
|
setNewWriter(in_msg.Address, machineIDToNodeID(in_msg.Requestor));
|
|
} else if (in_msg.Type == CoherenceRequestType:GETS) {
|
|
addNewSharer(in_msg.Address, machineIDToNodeID(in_msg.Requestor));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
action(r_clearExclusive, "\rrr", desc="clear exclusive bit") {
|
|
clearExclusiveBitIfExists(address);
|
|
}
|
|
|
|
action(r_setMRU, "\rr", desc="manually set the MRU bit for cache line" ) {
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
if ((machineIDToMachineType(in_msg.Requestor) == MachineType:L1Cache) &&
|
|
(isCacheTagPresent(address))) {
|
|
L2cacheMemory.setMRU(address);
|
|
}
|
|
}
|
|
}
|
|
|
|
action(t_sendAckWithCollectedTokens, "t", desc="Send ack with the tokens we've collected thus far.") {
|
|
if (getL2CacheEntry(address).Tokens > 0) {
|
|
peek(requestNetwork_in, RequestMsg) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:ACK;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
assert(getL2CacheEntry(address).Tokens >= 1);
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
out_msg.MessageSize := MessageSizeType:Response_Control;
|
|
}
|
|
}
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
|
|
action(tt_sendLocalAckWithCollectedTokens, "tt", desc="Send ack with the tokens we've collected thus far.") {
|
|
if (getL2CacheEntry(address).Tokens > 0) {
|
|
peek(L1requestNetwork_in, RequestMsg) {
|
|
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
|
|
out_msg.Address := address;
|
|
out_msg.Type := CoherenceResponseType:ACK;
|
|
out_msg.Sender := machineID;
|
|
out_msg.SenderMachine := MachineType:L2Cache;
|
|
out_msg.Destination.add(in_msg.Requestor);
|
|
assert(getL2CacheEntry(address).Tokens >= 1);
|
|
out_msg.Tokens := getL2CacheEntry(address).Tokens;
|
|
out_msg.MessageSize := MessageSizeType:Response_Control;
|
|
}
|
|
}
|
|
}
|
|
getL2CacheEntry(address).Tokens := 0;
|
|
}
|
|
|
|
action(u_writeDataToCache, "u", desc="Write data to cache") {
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
getL2CacheEntry(address).DataBlk := in_msg.DataBlk;
|
|
if ((getL2CacheEntry(address).Dirty == false) && in_msg.Dirty) {
|
|
getL2CacheEntry(address).Dirty := in_msg.Dirty;
|
|
}
|
|
}
|
|
}
|
|
|
|
action(vv_allocateL2CacheBlock, "\v", desc="Set L2 cache tag equal to tag of block B.") {
|
|
L2cacheMemory.allocate(address, new Entry);
|
|
}
|
|
|
|
action(rr_deallocateL2CacheBlock, "\r", desc="Deallocate L2 cache block. Sets the cache to not present, allowing a replacement in parallel with a fetch.") {
|
|
L2cacheMemory.deallocate(address);
|
|
}
|
|
|
|
//action(uu_profileMiss, "\u", desc="Profile the demand miss") {
|
|
// peek(L1requestNetwork_in, RequestMsg) {
|
|
// AccessModeType not implemented
|
|
//profile_L2Cache_miss(convertToGenericType(in_msg.Type), in_msg.AccessMode, MessageSizeTypeToInt(in_msg.MessageSize), in_msg.Prefetch, machineIDToNodeID(in_msg.Requestor));
|
|
// }
|
|
//}
|
|
|
|
|
|
action(w_assertIncomingDataAndCacheDataMatch, "w", desc="Assert that the incoming data and the data in the cache match") {
|
|
peek(responseNetwork_in, ResponseMsg) {
|
|
assert(getL2CacheEntry(address).DataBlk == in_msg.DataBlk);
|
|
}
|
|
}
|
|
|
|
|
|
//*****************************************************
|
|
// TRANSITIONS
|
|
//*****************************************************
|
|
|
|
transition({NP, I, S, O, M, I_L, S_L}, L1_INV) {
|
|
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition({NP, I, S, O, M}, Own_Lock_or_Unlock) {
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
|
|
// Transitions from NP
|
|
|
|
transition(NP, {Transient_GETX, Transient_GETS}) {
|
|
// forward message to local sharers
|
|
r_clearExclusive;
|
|
j_forwardTransientRequestToLocalSharers;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
|
|
transition(NP, {L1_GETS, L1_GETX}) {
|
|
a_broadcastLocalRequest;
|
|
r_markNewSharer;
|
|
//uu_profileMiss;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(NP, {Ack, Data_Shared, Data_Owner, Data_All_Tokens}) {
|
|
bb_bounceResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(NP, Writeback_Shared_Data, S) {
|
|
vv_allocateL2CacheBlock;
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(NP, Writeback_Tokens, I) {
|
|
vv_allocateL2CacheBlock;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(NP, Writeback_All_Tokens, M) {
|
|
vv_allocateL2CacheBlock;
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(NP, Writeback_Owned, O) {
|
|
vv_allocateL2CacheBlock;
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
|
|
transition(NP, {Persistent_GETX, Persistent_GETS}, I_L) {
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
// Transitions from Idle
|
|
|
|
transition(I, {L1_GETS, L1_GETS_Last_Token}) {
|
|
a_broadcastLocalRequest;
|
|
tt_sendLocalAckWithCollectedTokens; // send any tokens we have collected
|
|
r_markNewSharer;
|
|
//uu_profileMiss;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(I, L1_GETX) {
|
|
a_broadcastLocalRequest;
|
|
tt_sendLocalAckWithCollectedTokens; // send any tokens we have collected
|
|
r_markNewSharer;
|
|
//uu_profileMiss;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(I, L2_Replacement) {
|
|
c_cleanReplacement; // Only needed in some cases
|
|
rr_deallocateL2CacheBlock;
|
|
}
|
|
|
|
transition(I, {Transient_GETX, Transient_GETS, Transient_GETS_Last_Token}) {
|
|
r_clearExclusive;
|
|
t_sendAckWithCollectedTokens;
|
|
j_forwardTransientRequestToLocalSharers;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(I, {Persistent_GETX, Persistent_GETS}, I_L) {
|
|
e_sendAckWithCollectedTokens;
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
|
|
transition(I, Ack) {
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(I, Data_Shared, S) {
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(I, Writeback_Shared_Data, S) {
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(I, Writeback_Tokens) {
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(I, Data_Owner, O) {
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(I, Writeback_Owned, O) {
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(I, Data_All_Tokens, M) {
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
|
|
transition(I, Writeback_All_Tokens, M) {
|
|
u_writeDataToCache;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
// Transitions from Shared
|
|
|
|
transition(S, L2_Replacement, I) {
|
|
c_cleanReplacement;
|
|
rr_deallocateL2CacheBlock;
|
|
}
|
|
|
|
transition(S, Transient_GETX, I) {
|
|
r_clearExclusive;
|
|
t_sendAckWithCollectedTokens;
|
|
j_forwardTransientRequestToLocalSharers;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(S, {Transient_GETS, Transient_GETS_Last_Token}) {
|
|
j_forwardTransientRequestToLocalSharers;
|
|
r_clearExclusive;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(S, Persistent_GETX, I_L) {
|
|
e_sendAckWithCollectedTokens;
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
|
|
transition(S, Persistent_GETS, S_L) {
|
|
f_sendAckWithAllButOneTokens;
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
|
|
transition(S, Ack) {
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S, Data_Shared) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S, Writeback_Tokens) {
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S, Writeback_Shared_Data) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
|
|
transition(S, Data_Owner, O) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S, Writeback_Owned, O) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S, Data_All_Tokens, M) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S, Writeback_All_Tokens, M) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S, L1_GETX, I) {
|
|
a_broadcastLocalRequest;
|
|
tt_sendLocalAckWithCollectedTokens;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
//uu_profileMiss;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
|
|
transition(S, L1_GETS) {
|
|
k_dataFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(S, L1_GETS_Last_Token, I) {
|
|
|
|
k_dataFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
// Transitions from Owned
|
|
|
|
transition(O, L2_Replacement, I) {
|
|
cc_dirtyReplacement;
|
|
rr_deallocateL2CacheBlock;
|
|
}
|
|
|
|
transition(O, Transient_GETX, I) {
|
|
r_clearExclusive;
|
|
dd_sendDataWithAllTokens;
|
|
j_forwardTransientRequestToLocalSharers;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(O, Persistent_GETX, I_L) {
|
|
ee_sendDataWithAllTokens;
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
transition(O, Persistent_GETS, S_L) {
|
|
ff_sendDataWithAllButOneTokens;
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
transition(O, Transient_GETS) {
|
|
// send multiple tokens
|
|
r_clearExclusive;
|
|
d_sendDataWithTokens;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(O, Transient_GETS_Last_Token) {
|
|
// WAIT FOR IT TO GO PERSISTENT
|
|
r_clearExclusive;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(O, Ack) {
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(O, Ack_All_Tokens, M) {
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(O, Data_Shared) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
|
|
transition(O, {Writeback_Tokens, Writeback_Shared_Data}) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(O, Data_All_Tokens, M) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(O, Writeback_All_Tokens, M) {
|
|
w_assertIncomingDataAndCacheDataMatch;
|
|
q_updateTokensFromResponse;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(O, L1_GETS) {
|
|
k_dataFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(O, L1_GETS_Last_Token, I) {
|
|
k_dataOwnerFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(O, L1_GETX, I) {
|
|
a_broadcastLocalRequest;
|
|
k_dataAndAllTokensFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
//uu_profileMiss;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
// Transitions from M
|
|
|
|
transition(M, L2_Replacement, I) {
|
|
cc_dirtyReplacement;
|
|
rr_deallocateL2CacheBlock;
|
|
}
|
|
|
|
// MRM_DEBUG: Give up all tokens even for GETS? ???
|
|
transition(M, {Transient_GETX, Transient_GETS}, I) {
|
|
r_clearExclusive;
|
|
dd_sendDataWithAllTokens;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(M, {Persistent_GETS, Persistent_GETX}, I_L) {
|
|
ee_sendDataWithAllTokens;
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
|
|
transition(M, L1_GETS, O) {
|
|
k_dataFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(M, L1_GETX, I) {
|
|
k_dataAndAllTokensFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
|
|
//Transitions from locked states
|
|
|
|
transition({I_L, S_L}, Ack) {
|
|
gg_bounceResponseToStarver;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition({I_L, S_L}, {Data_Shared, Data_Owner, Data_All_Tokens}) {
|
|
gg_bounceResponseToStarver;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition({I_L, S_L}, {Writeback_Tokens, Writeback_Shared_Data}) {
|
|
gg_bounceWBSharedToStarver;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition({I_L, S_L}, {Writeback_Owned, Writeback_All_Tokens}) {
|
|
gg_bounceWBOwnedToStarver;
|
|
h_updateFilterFromL1HintOrWB;
|
|
n_popResponseQueue;
|
|
}
|
|
|
|
transition(S_L, L2_Replacement, I) {
|
|
c_cleanReplacement;
|
|
rr_deallocateL2CacheBlock;
|
|
}
|
|
|
|
transition(I_L, L2_Replacement, I) {
|
|
rr_deallocateL2CacheBlock;
|
|
}
|
|
|
|
transition(I_L, Own_Lock_or_Unlock, I) {
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
transition(S_L, Own_Lock_or_Unlock, S) {
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
transition({I_L, S_L}, {Transient_GETS_Last_Token, Transient_GETS, Transient_GETX}) {
|
|
r_clearExclusive;
|
|
m_popRequestQueue;
|
|
}
|
|
|
|
transition(I_L, {L1_GETX, L1_GETS}) {
|
|
a_broadcastLocalRequest;
|
|
r_markNewSharer;
|
|
//uu_profileMiss;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(S_L, L1_GETX, I_L) {
|
|
a_broadcastLocalRequest;
|
|
tt_sendLocalAckWithCollectedTokens;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
//uu_profileMiss;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(S_L, L1_GETS) {
|
|
k_dataFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(S_L, L1_GETS_Last_Token, I_L) {
|
|
k_dataFromL2CacheToL1Requestor;
|
|
r_markNewSharer;
|
|
r_setMRU;
|
|
o_popL1RequestQueue;
|
|
}
|
|
|
|
transition(S_L, Persistent_GETX, I_L) {
|
|
e_sendAckWithCollectedTokens;
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
transition(S_L, Persistent_GETS) {
|
|
l_popPersistentQueue;
|
|
}
|
|
|
|
transition(I_L, {Persistent_GETX, Persistent_GETS}) {
|
|
l_popPersistentQueue;
|
|
}
|
|
}
|