/*
* Copyright (c) 1999-2013 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.
*/
machine(L2Cache, "Token protocol")
: CacheMemory * L2cache,
int N_tokens,
Cycles l2_request_latency = 5,
Cycles l2_response_latency = 5,
bool filtering_enabled = true
{
// 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="4", ordered="false", vnet_type="response";
// this L2 bank -> mod-directory
MessageBuffer GlobalRequestFromL2Cache, network="To", virtual_network="2", ordered="false", vnet_type="request";
// this L2 bank -> a local L1
MessageBuffer L1RequestFromL2Cache, network="To", virtual_network="1", ordered="false", vnet_type="request";
// FROM the network to this local bank of L2 cache
// a local L1 || mod-directory -> this L2 bank
MessageBuffer responseToL2Cache, network="From", virtual_network="4", ordered="false", vnet_type="response";
MessageBuffer persistentToL2Cache, network="From", virtual_network="3", ordered="true", vnet_type="persistent";
// mod-directory -> this L2 bank
MessageBuffer GlobalRequestToL2Cache, network="From", virtual_network="2", ordered="false", vnet_type="request";
// a local L1 -> this L2 bank
MessageBuffer L1RequestToL2Cache, network="From", virtual_network="1", ordered="false", vnet_type="request";
// STATES
state_declaration(State, desc="L2 Cache states", default="L2Cache_State_I") {
// Base states
NP, AccessPermission:Invalid, desc="Not Present";
I, AccessPermission:Invalid, desc="Idle";
S, AccessPermission:Read_Only, desc="Shared, not present in any local L1s";
O, AccessPermission:Read_Only, desc="Owned, not present in any L1s";
M, AccessPermission:Read_Write, desc="Modified, not present in any L1s";
// Locked states
I_L, AccessPermission:Busy, "I^L", desc="Invalid, Locked";
S_L, AccessPermission:Busy, "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";
Persistent_GETS_Last_Token, 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";
}
structure(PerfectCacheMemory, external="yes") {
void allocate(Address);
void deallocate(Address);
DirEntry lookup(Address);
bool isTagPresent(Address);
}
structure(PersistentTable, external="yes") {
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);
}
PersistentTable persistentTable;
PerfectCacheMemory localDirectory, template="<L2Cache_DirEntry>";
void set_cache_entry(AbstractCacheEntry b);
void unset_cache_entry();
Entry getCacheEntry(Address address), return_by_pointer="yes" {
Entry cache_entry := static_cast(Entry, "pointer", L2cache.lookup(address));
return cache_entry;
}
DataBlock getDataBlock(Address addr), return_by_ref="yes" {
return getCacheEntry(addr).DataBlk;
}
int getTokens(Entry cache_entry) {
if (is_valid(cache_entry)) {
return cache_entry.Tokens;
} else {
return 0;
}
}
State getState(Entry cache_entry, Address addr) {
if (is_valid(cache_entry)) {
return cache_entry.CacheState;
} else if (persistentTable.isLocked(addr) == true) {
return State:I_L;
} else {
return State:NP;
}
}
void setState(Entry cache_entry, Address addr, State state) {
if (is_valid(cache_entry)) {
// Make sure the token count is in range
assert(cache_entry.Tokens >= 0);
assert(cache_entry.Tokens <= max_tokens());
assert(cache_entry.Tokens != (max_tokens() / 2));
// Make sure we have no tokens in L
if ((state == State:I_L) ) {
assert(cache_entry.Tokens == 0);
}
// in M and E you have all the tokens
if (state == State:M ) {
assert(cache_entry.Tokens == max_tokens());
}
// in NP you have no tokens
if (state == State:NP) {
assert(cache_entry.Tokens == 0);
}
// You have at least one token in S-like states
if (state == State:S ) {
assert(cache_entry.Tokens > 0);
}
// You have at least half the token in O-like states
if (state == State:O ) {
assert(cache_entry.Tokens > (max_tokens() / 2));
}
cache_entry.CacheState := state;
}
}
AccessPermission getAccessPermission(Address addr) {
Entry cache_entry := getCacheEntry(addr);
if(is_valid(cache_entry)) {
return L2Cache_State_to_permission(cache_entry.CacheState);
}
return AccessPermission:NotPresent;
}
void setAccessPermission(Entry cache_entry, Address addr, State state) {
if (is_valid(cache_entry)) {
cache_entry.changePermission(L2Cache_State_to_permission(state));
}
}
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.Addr, in_msg.Requestor, AccessType:Write);
} else if (in_msg.Type == PersistentRequestType:GETS_PERSISTENT) {
persistentTable.persistentRequestLock(in_msg.Addr, in_msg.Requestor, AccessType:Read);
} else if (in_msg.Type == PersistentRequestType:DEACTIVATE_PERSISTENT) {
persistentTable.persistentRequestUnlock(in_msg.Addr, in_msg.Requestor);
} else {
error("Unexpected message");
}
Entry cache_entry := getCacheEntry(in_msg.Addr);
// React to the message based on the current state of the table
if (persistentTable.isLocked(in_msg.Addr)) {
if (persistentTable.typeOfSmallest(in_msg.Addr) == AccessType:Read) {
if (getTokens(cache_entry) == 1 ||
getTokens(cache_entry) == (max_tokens() / 2) + 1) {
trigger(Event:Persistent_GETS_Last_Token, in_msg.Addr,
cache_entry);
} else {
trigger(Event:Persistent_GETS, in_msg.Addr, cache_entry);
}
} else {
trigger(Event:Persistent_GETX, in_msg.Addr, cache_entry);
}
}
else {
trigger(Event:Own_Lock_or_Unlock, in_msg.Addr, cache_entry);
}
}
}
}
// Request Network
in_port(requestNetwork_in, RequestMsg, GlobalRequestToL2Cache) {
if (requestNetwork_in.isReady()) {
peek(requestNetwork_in, RequestMsg) {
assert(in_msg.Destination.isElement(machineID));
Entry cache_entry := getCacheEntry(in_msg.Addr);
if (in_msg.Type == CoherenceRequestType:GETX) {
trigger(Event:Transient_GETX, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceRequestType:GETS) {
if (getTokens(cache_entry) == 1) {
trigger(Event:Transient_GETS_Last_Token, in_msg.Addr,
cache_entry);
}
else {
trigger(Event:Transient_GETS, in_msg.Addr, cache_entry);
}
} else {
error("Unexpected message");
}
}
}
}
in_port(L1requestNetwork_in, RequestMsg, L1RequestToL2Cache) {
if (L1requestNetwork_in.isReady()) {
peek(L1requestNetwork_in, RequestMsg) {
assert(in_msg.Destination.isElement(machineID));
Entry cache_entry := getCacheEntry(in_msg.Addr);
if (in_msg.Type == CoherenceRequestType:GETX) {
trigger(Event:L1_GETX, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceRequestType:GETS) {
if (getTokens(cache_entry) == 1 ||
getTokens(cache_entry) == (max_tokens() / 2) + 1) {
trigger(Event:L1_GETS_Last_Token, in_msg.Addr, cache_entry);
}
else {
trigger(Event:L1_GETS, in_msg.Addr, cache_entry);
}
} 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));
Entry cache_entry := getCacheEntry(in_msg.Addr);
if (getTokens(cache_entry) + in_msg.Tokens != max_tokens()) {
if (in_msg.Type == CoherenceResponseType:ACK) {
assert(in_msg.Tokens < (max_tokens() / 2));
trigger(Event:Ack, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceResponseType:DATA_OWNER) {
trigger(Event:Data_Owner, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceResponseType:DATA_SHARED) {
trigger(Event:Data_Shared, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceResponseType:WB_TOKENS ||
in_msg.Type == CoherenceResponseType:WB_OWNED ||
in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
if (L2cache.cacheAvail(in_msg.Addr) || is_valid(cache_entry)) {
// 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.Addr, cache_entry);
} else if (in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
assert(in_msg.Dirty == false);
trigger(Event:Writeback_Shared_Data, in_msg.Addr, cache_entry);
}
else if (in_msg.Type == CoherenceResponseType:WB_OWNED) {
//assert(in_msg.Dirty == false);
trigger(Event:Writeback_Owned, in_msg.Addr, cache_entry);
}
}
else {
trigger(Event:L2_Replacement,
L2cache.cacheProbe(in_msg.Addr),
getCacheEntry(L2cache.cacheProbe(in_msg.Addr)));
}
} else if (in_msg.Type == CoherenceResponseType:INV) {
trigger(Event:L1_INV, in_msg.Addr, cache_entry);
} else {
error("Unexpected message");
}
} else {
if (in_msg.Type == CoherenceResponseType:ACK) {
assert(in_msg.Tokens < (max_tokens() / 2));
trigger(Event:Ack_All_Tokens, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceResponseType:DATA_OWNER ||
in_msg.Type == CoherenceResponseType:DATA_SHARED) {
trigger(Event:Data_All_Tokens, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceResponseType:WB_TOKENS ||
in_msg.Type == CoherenceResponseType:WB_OWNED ||
in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
if (L2cache.cacheAvail(in_msg.Addr) || is_valid(cache_entry)) {
// either room is available or the block is already present
if (in_msg.Type == CoherenceResponseType:WB_TOKENS) {
assert(in_msg.Dirty == false);
assert( (getState(cache_entry, in_msg.Addr) != State:NP)
&& (getState(cache_entry, in_msg.Addr) != State:I) );
trigger(Event:Writeback_All_Tokens, in_msg.Addr, cache_entry);
} else if (in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
assert(in_msg.Dirty == false);
trigger(Event:Writeback_All_Tokens, in_msg.Addr, cache_entry);
}
else if (in_msg.Type == CoherenceResponseType:WB_OWNED) {
trigger(Event:Writeback_All_Tokens, in_msg.Addr, cache_entry);
}
}
else {
trigger(Event:L2_Replacement,
L2cache.cacheProbe(in_msg.Addr),
getCacheEntry(L2cache.cacheProbe(in_msg.Addr)));
}
} else if (in_msg.Type == CoherenceResponseType:INV) {
trigger(Event:L1_INV, in_msg.Addr, cache_entry);
} else {
DPRINTF(RubySlicc, "%s\n", 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.Addr) == false) || (in_msg.Type == CoherenceRequestType:GETS && sharersExist(in_msg.Addr) == false)) {
enqueue(globalRequestNetwork_out, RequestMsg, latency=l2_request_latency) {
out_msg.Addr := in_msg.Addr;
out_msg.Type := in_msg.Type;
out_msg.Requestor := in_msg.Requestor;
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.Addr := address;
out_msg.Type := in_msg.Type;
out_msg.Sender := machineID;
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") {
assert(is_valid(cache_entry));
if (cache_entry.Tokens > 0) {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:ACK;
out_msg.Sender := machineID;
out_msg.Destination.add(map_Address_to_Directory(address));
out_msg.Tokens := cache_entry.Tokens;
out_msg.MessageSize := MessageSizeType:Writeback_Control;
}
cache_entry.Tokens := 0;
}
}
action(cc_dirtyReplacement, "\c", desc="Issue dirty writeback") {
assert(is_valid(cache_entry));
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Sender := machineID;
out_msg.Destination.add(map_Address_to_Directory(address));
out_msg.Tokens := cache_entry.Tokens;
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := cache_entry.Dirty;
if (cache_entry.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;
}
}
cache_entry.Tokens := 0;
}
action(d_sendDataWithTokens, "d", desc="Send data and a token from cache to requestor") {
peek(requestNetwork_in, RequestMsg) {
assert(is_valid(cache_entry));
if (cache_entry.Tokens > (N_tokens + (max_tokens() / 2))) {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_SHARED;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
out_msg.Tokens := N_tokens;
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := false;
out_msg.MessageSize := MessageSizeType:Response_Data;
}
cache_entry.Tokens := cache_entry.Tokens - N_tokens;
}
else {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_SHARED;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
out_msg.Tokens := 1;
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := false;
out_msg.MessageSize := MessageSizeType:Response_Data;
}
cache_entry.Tokens := cache_entry.Tokens - 1;
}
}
}
action(dd_sendDataWithAllTokens, "\d", desc="Send data and all tokens from cache to requestor") {
assert(is_valid(cache_entry));
peek(requestNetwork_in, RequestMsg) {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_OWNER;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
assert(cache_entry.Tokens >= 1);
out_msg.Tokens := cache_entry.Tokens;
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := cache_entry.Dirty;
out_msg.MessageSize := MessageSizeType:Response_Data;
}
}
cache_entry.Tokens := 0;
}
action(e_sendAckWithCollectedTokens, "e", desc="Send ack with the tokens we've collected thus far.") {
assert(is_valid(cache_entry));
if (cache_entry.Tokens > 0) {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:ACK;
out_msg.Sender := machineID;
out_msg.Destination.add(persistentTable.findSmallest(address));
assert(cache_entry.Tokens >= 1);
out_msg.Tokens := cache_entry.Tokens;
out_msg.MessageSize := MessageSizeType:Response_Control;
}
}
cache_entry.Tokens := 0;
}
action(ee_sendDataWithAllTokens, "\e", desc="Send data and all tokens from cache to starver") {
assert(is_valid(cache_entry));
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_OWNER;
out_msg.Sender := machineID;
out_msg.Destination.add(persistentTable.findSmallest(address));
assert(cache_entry.Tokens >= 1);
out_msg.Tokens := cache_entry.Tokens;
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := cache_entry.Dirty;
out_msg.MessageSize := MessageSizeType:Response_Data;
}
cache_entry.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(is_valid(cache_entry));
assert(cache_entry.Tokens > 0);
if (cache_entry.Tokens > 1) {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:ACK;
out_msg.Sender := machineID;
out_msg.Destination.add(persistentTable.findSmallest(address));
assert(cache_entry.Tokens >= 1);
out_msg.Tokens := cache_entry.Tokens - 1;
out_msg.MessageSize := MessageSizeType:Response_Control;
}
}
cache_entry.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(is_valid(cache_entry));
assert(cache_entry.Tokens > (max_tokens() / 2) + 1);
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_OWNER;
out_msg.Sender := machineID;
out_msg.Destination.add(persistentTable.findSmallest(address));
out_msg.Tokens := cache_entry.Tokens - 1;
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := cache_entry.Dirty;
out_msg.MessageSize := MessageSizeType:Response_Data;
}
cache_entry.Tokens := 1;
}
action(fa_sendDataWithAllTokens, "fa", desc="Send data and out tokens but one to starver") {
//assert(persistentTable.findSmallest(address) != id); // Make sure we never bounce tokens to ourself
assert(is_valid(cache_entry));
assert(cache_entry.Tokens == (max_tokens() / 2) + 1);
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_OWNER;
out_msg.Sender := machineID;
out_msg.Destination.add(persistentTable.findSmallest(address));
out_msg.Tokens := cache_entry.Tokens;
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := cache_entry.Dirty;
out_msg.MessageSize := MessageSizeType:Response_Data;
}
cache_entry.Tokens := 0;
}
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.Addr := address;
out_msg.Type := in_msg.Type;
out_msg.Sender := machineID;
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.Addr := address;
if (in_msg.Type == CoherenceResponseType:WB_SHARED_DATA) {
out_msg.Type := CoherenceResponseType:DATA_SHARED;
} else {
assert(in_msg.Tokens < (max_tokens() / 2));
out_msg.Type := CoherenceResponseType:ACK;
}
out_msg.Sender := machineID;
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.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_OWNER;
out_msg.Sender := machineID;
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.Addr, 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.Addr) == false) {
//profile_filter_action(1);
DPRINTF(RubySlicc, "filtered message, Retry Num: %d\n",
in_msg.RetryNum);
}
else {
enqueue(localRequestNetwork_out, RequestMsg, latency=l2_response_latency ) {
out_msg.Addr := in_msg.Addr;
out_msg.Requestor := in_msg.Requestor;
//
// 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:Broadcast_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(is_valid(cache_entry));
assert(cache_entry.Tokens > 0);
//enqueue(responseIntraChipL2Network_out, ResponseMsg, latency="L2_to_L1_RESPONSE_LATENCY") {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_SHARED;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := false;
out_msg.MessageSize := MessageSizeType:ResponseL2hit_Data;
out_msg.Tokens := 1;
}
cache_entry.Tokens := cache_entry.Tokens - 1;
}
}
action(k_dataOwnerFromL2CacheToL1Requestor, "\k", desc="Send data and a token from cache to L1 requestor") {
peek(L1requestNetwork_in, RequestMsg) {
assert(is_valid(cache_entry));
assert(cache_entry.Tokens == (max_tokens() / 2) + 1);
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_OWNER;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := cache_entry.Dirty;
out_msg.MessageSize := MessageSizeType:ResponseL2hit_Data;
out_msg.Tokens := cache_entry.Tokens;
}
cache_entry.Tokens := 0;
}
}
action(k_dataAndAllTokensFromL2CacheToL1Requestor, "\kk", desc="Send data and a token from cache to L1 requestor") {
peek(L1requestNetwork_in, RequestMsg) {
assert(is_valid(cache_entry));
// assert(cache_entry.Tokens == max_tokens());
//enqueue(responseIntraChipL2Network_out, ResponseMsg, latency="L2_to_L1_RESPONSE_LATENCY") {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:DATA_OWNER;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
out_msg.DataBlk := cache_entry.DataBlk;
out_msg.Dirty := cache_entry.Dirty;
out_msg.MessageSize := MessageSizeType:ResponseL2hit_Data;
//out_msg.Tokens := max_tokens();
out_msg.Tokens := cache_entry.Tokens;
}
cache_entry.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(is_valid(cache_entry));
assert(in_msg.Tokens != 0);
cache_entry.Tokens := cache_entry.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) {
cache_entry.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.Addr, machineIDToNodeID(in_msg.Requestor));
} else if (in_msg.Type == CoherenceRequestType:GETS) {
addNewSharer(in_msg.Addr, 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) &&
(is_valid(cache_entry))) {
L2cache.setMRU(address);
}
}
}
action(t_sendAckWithCollectedTokens, "t", desc="Send ack with the tokens we've collected thus far.") {
assert(is_valid(cache_entry));
if (cache_entry.Tokens > 0) {
peek(requestNetwork_in, RequestMsg) {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:ACK;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
assert(cache_entry.Tokens >= 1);
out_msg.Tokens := cache_entry.Tokens;
out_msg.MessageSize := MessageSizeType:Response_Control;
}
}
}
cache_entry.Tokens := 0;
}
action(tt_sendLocalAckWithCollectedTokens, "tt", desc="Send ack with the tokens we've collected thus far.") {
assert(is_valid(cache_entry));
if (cache_entry.Tokens > 0) {
peek(L1requestNetwork_in, RequestMsg) {
enqueue(responseNetwork_out, ResponseMsg, latency=l2_response_latency) {
out_msg.Addr := address;
out_msg.Type := CoherenceResponseType:ACK;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
assert(cache_entry.Tokens >= 1);
out_msg.Tokens := cache_entry.Tokens;
out_msg.MessageSize := MessageSizeType:Response_Control;
}
}
}
cache_entry.Tokens := 0;
}
action(u_writeDataToCache, "u", desc="Write data to cache") {
peek(responseNetwork_in, ResponseMsg) {
assert(is_valid(cache_entry));
cache_entry.DataBlk := in_msg.DataBlk;
if ((cache_entry.Dirty == false) && in_msg.Dirty) {
cache_entry.Dirty := in_msg.Dirty;
}
}
}
action(vv_allocateL2CacheBlock, "\v", desc="Set L2 cache tag equal to tag of block B.") {
set_cache_entry(L2cache.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.") {
L2cache.deallocate(address);
unset_cache_entry();
}
action(uu_profileMiss, "\um", desc="Profile the demand miss") {
++L2cache.demand_misses;
}
action(uu_profileHit, "\uh", desc="Profile the demand hit") {
++L2cache.demand_hits;
}
action(w_assertIncomingDataAndCacheDataMatch, "w", desc="Assert that the incoming data and the data in the cache match") {
peek(responseNetwork_in, ResponseMsg) {
if (in_msg.Type != CoherenceResponseType:ACK &&
in_msg.Type != CoherenceResponseType:WB_TOKENS) {
assert(is_valid(cache_entry));
assert(cache_entry.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, Persistent_GETS_Last_Token},
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, Persistent_GETS_Last_Token},
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, Persistent_GETS_Last_Token}, 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;
uu_profileHit;
o_popL1RequestQueue;
}
transition(S, L1_GETS_Last_Token, I) {
k_dataFromL2CacheToL1Requestor;
r_markNewSharer;
r_setMRU;
uu_profileHit;
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, Persistent_GETS_Last_Token, I_L) {
fa_sendDataWithAllTokens;
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;
uu_profileHit;
o_popL1RequestQueue;
}
transition(O, L1_GETS_Last_Token, I) {
k_dataOwnerFromL2CacheToL1Requestor;
r_markNewSharer;
r_setMRU;
uu_profileHit;
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;
uu_profileHit;
o_popL1RequestQueue;
}
transition(M, L1_GETX, I) {
k_dataAndAllTokensFromL2CacheToL1Requestor;
r_markNewSharer;
r_setMRU;
uu_profileHit;
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;
uu_profileHit;
o_popL1RequestQueue;
}
transition(S_L, L1_GETS_Last_Token, I_L) {
k_dataFromL2CacheToL1Requestor;
r_markNewSharer;
r_setMRU;
uu_profileHit;
o_popL1RequestQueue;
}
transition(S_L, Persistent_GETX, I_L) {
e_sendAckWithCollectedTokens;
l_popPersistentQueue;
}
transition(S_L, {Persistent_GETS, Persistent_GETS_Last_Token}) {
l_popPersistentQueue;
}
transition(I_L, {Persistent_GETX, Persistent_GETS}) {
l_popPersistentQueue;
}
}