// From this node's L1 cache TO the network
// a local L1 -> this L2 bank
- MessageBuffer responseFromL1Cache, network="To", virtual_network="4", ordered="false";
- MessageBuffer persistentFromL1Cache, network="To", virtual_network="3", ordered="true";
+ MessageBuffer responseFromL1Cache, network="To", virtual_network="4", ordered="false", vnet_type="response";
+ MessageBuffer persistentFromL1Cache, network="To", virtual_network="3", ordered="true", vnet_type="persistent";
// a local L1 -> this L2 bank, currently ordered with directory forwarded requests
- MessageBuffer requestFromL1Cache, network="To", virtual_network="1", ordered="false";
+ MessageBuffer requestFromL1Cache, network="To", virtual_network="1", ordered="false", vnet_type="request";
// To this node's L1 cache FROM the network
// a L2 bank -> this L1
- MessageBuffer responseToL1Cache, network="From", virtual_network="4", ordered="false";
- MessageBuffer persistentToL1Cache, network="From", virtual_network="3", ordered="true";
+ MessageBuffer responseToL1Cache, network="From", virtual_network="4", ordered="false", vnet_type="response";
+ MessageBuffer persistentToL1Cache, network="From", virtual_network="3", ordered="true", vnet_type="persistent";
// a L2 bank -> this L1
- MessageBuffer requestToL1Cache, network="From", virtual_network="1", ordered="false";
+ MessageBuffer requestToL1Cache, network="From", virtual_network="1", ordered="false", vnet_type="request";
// STATES
- enumeration(State, desc="Cache states", default="L1Cache_State_I") {
+ state_declaration(State, desc="Cache states", default="L1Cache_State_I") {
// Base states
- NP, "NP", desc="Not Present";
- I, "I", desc="Idle";
- S, "S", desc="Shared";
- O, "O", desc="Owned";
- M, "M", desc="Modified (dirty)";
- MM, "MM", desc="Modified (dirty and locally modified)";
- M_W, "M^W", desc="Modified (dirty), waiting";
- MM_W, "MM^W", desc="Modified (dirty and locally modified), waiting";
+ NP, AccessPermission:Invalid, "NP", desc="Not Present";
+ I, AccessPermission:Invalid, "I", desc="Idle";
+ S, AccessPermission:Read_Only, "S", desc="Shared";
+ O, AccessPermission:Read_Only, "O", desc="Owned";
+ M, AccessPermission:Read_Only, "M", desc="Modified (dirty)";
+ MM, AccessPermission:Read_Write, "MM", desc="Modified (dirty and locally modified)";
+ M_W, AccessPermission:Read_Only, "M^W", desc="Modified (dirty), waiting";
+ MM_W, AccessPermission:Read_Write, "MM^W", desc="Modified (dirty and locally modified), waiting";
// Transient States
- IM, "IM", desc="Issued GetX";
- SM, "SM", desc="Issued GetX, we still have an old copy of the line";
- OM, "OM", desc="Issued GetX, received data";
- IS, "IS", desc="Issued GetS";
+ IM, AccessPermission:Busy, "IM", desc="Issued GetX";
+ SM, AccessPermission:Read_Only, "SM", desc="Issued GetX, we still have an old copy of the line";
+ OM, AccessPermission:Read_Only, "OM", desc="Issued GetX, received data";
+ IS, AccessPermission:Busy, "IS", desc="Issued GetS";
// Locked states
- I_L, "I^L", desc="Invalid, Locked";
- S_L, "S^L", desc="Shared, Locked";
- IM_L, "IM^L", desc="Invalid, Locked, trying to go to Modified";
- SM_L, "SM^L", desc="Shared, Locked, trying to go to Modified";
- IS_L, "IS^L", desc="Invalid, Locked, trying to go to Shared";
+ I_L, AccessPermission:Busy, "I^L", desc="Invalid, Locked";
+ S_L, AccessPermission:Busy, "S^L", desc="Shared, Locked";
+ IM_L, AccessPermission:Busy, "IM^L", desc="Invalid, Locked, trying to go to Modified";
+ SM_L, AccessPermission:Busy, "SM^L", desc="Shared, Locked, trying to go to Modified";
+ IS_L, AccessPermission:Busy, "IS^L", desc="Invalid, Locked, trying to go to Shared";
}
// EVENTS
AccessType AccessType, desc="Type of request (used for profiling)";
Time IssueTime, desc="Time the request was issued";
- AccessModeType AccessMode, desc="user/supervisor access type";
+ RubyAccessMode AccessMode, desc="user/supervisor access type";
PrefetchBit Prefetch, desc="Is this a prefetch request";
}
- external_type(TBETable) {
+ structure(TBETable, external="yes") {
TBE lookup(Address);
void allocate(Address);
void deallocate(Address);
bool isPresent(Address);
}
- external_type(PersistentTable) {
+ structure(PersistentTable, external="yes") {
void persistentRequestLock(Address, MachineID, AccessType);
void persistentRequestUnlock(Address, MachineID);
bool okToIssueStarving(Address, MachineID);
void unset_cache_entry();
void set_tbe(TBE b);
void unset_tbe();
+ void wakeUpAllBuffers();
+ void wakeUpBuffers(Address a);
TBETable L1_TBEs, template_hack="<L1Cache_TBE>";
return L1Icache_entry;
}
+ DataBlock getDataBlock(Address addr), return_by_ref="yes" {
+ return getCacheEntry(addr).DataBlk;
+ }
+
Entry getL1DCacheEntry(Address addr), return_by_pointer="yes" {
Entry L1Dcache_entry := static_cast(Entry, "pointer", L1DcacheMemory.lookup(addr));
return L1Dcache_entry;
}
cache_entry.CacheState := state;
+ }
+ }
- // Set permission
- if (state == State:MM ||
- state == State:MM_W) {
- cache_entry.changePermission(AccessPermission:Read_Write);
- } else if ((state == State:S) ||
- (state == State:O) ||
- (state == State:M) ||
- (state == State:M_W) ||
- (state == State:SM) ||
- (state == State:S_L) ||
- (state == State:SM_L) ||
- (state == State:OM)) {
- cache_entry.changePermission(AccessPermission:Read_Only);
- } else {
- cache_entry.changePermission(AccessPermission:Invalid);
- }
+ AccessPermission getAccessPermission(Address addr) {
+ TBE tbe := L1_TBEs[addr];
+ if(is_valid(tbe)) {
+ return L1Cache_State_to_permission(tbe.TBEState);
+ }
+
+ Entry cache_entry := getCacheEntry(addr);
+ if(is_valid(cache_entry)) {
+ return L1Cache_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(L1Cache_State_to_permission(state));
}
}
- Event mandatory_request_type_to_event(CacheRequestType type) {
- if (type == CacheRequestType:LD) {
+ Event mandatory_request_type_to_event(RubyRequestType type) {
+ if (type == RubyRequestType:LD) {
return Event:Load;
- } else if (type == CacheRequestType:IFETCH) {
+ } else if (type == RubyRequestType:IFETCH) {
return Event:Ifetch;
- } else if (type == CacheRequestType:ST) {
+ } else if (type == RubyRequestType:ST) {
return Event:Store;
- } else if (type == CacheRequestType:ATOMIC) {
+ } else if (type == RubyRequestType:ATOMIC) {
if (no_mig_atomic) {
return Event:Atomic;
} else {
return Event:Store;
}
} else {
- error("Invalid CacheRequestType");
+ error("Invalid RubyRequestType");
}
}
- AccessType cache_request_type_to_access_type(CacheRequestType type) {
- if ((type == CacheRequestType:LD) || (type == CacheRequestType:IFETCH)) {
+ AccessType cache_request_type_to_access_type(RubyRequestType type) {
+ if ((type == RubyRequestType:LD) || (type == RubyRequestType:IFETCH)) {
return AccessType:Read;
- } else if ((type == CacheRequestType:ST) || (type == CacheRequestType:ATOMIC)) {
+ } else if ((type == RubyRequestType:ST) || (type == RubyRequestType:ATOMIC)) {
return AccessType:Write;
} else {
- error("Invalid CacheRequestType");
+ error("Invalid RubyRequestType");
}
}
}
// Mandatory Queue
- in_port(mandatoryQueue_in, CacheMsg, mandatoryQueue, desc="...", rank=0) {
+ in_port(mandatoryQueue_in, RubyRequest, mandatoryQueue, desc="...", rank=0) {
if (mandatoryQueue_in.isReady()) {
- peek(mandatoryQueue_in, CacheMsg, block_on="LineAddress") {
+ peek(mandatoryQueue_in, RubyRequest, block_on="LineAddress") {
// Check for data access to blocks in I-cache and ifetchs to blocks in D-cache
TBE tbe := L1_TBEs[in_msg.LineAddress];
- if (in_msg.Type == CacheRequestType:IFETCH) {
+ if (in_msg.Type == RubyRequestType:IFETCH) {
// ** INSTRUCTION ACCESS ***
Entry L1Icache_entry := getL1ICacheEntry(in_msg.LineAddress);
L1_TBEs.allocate(address);
set_tbe(L1_TBEs[address]);
tbe.IssueCount := 0;
- peek(mandatoryQueue_in, CacheMsg) {
+ peek(mandatoryQueue_in, RubyRequest) {
tbe.PC := in_msg.ProgramCounter;
tbe.AccessType := cache_request_type_to_access_type(in_msg.Type);
- if (in_msg.Type == CacheRequestType:ATOMIC) {
+ if (in_msg.Type == RubyRequestType:ATOMIC) {
tbe.IsAtomic := true;
}
tbe.Prefetch := in_msg.Prefetch;
}
action(ta_traceStalledAddress, "ta", desc="Trace Stalled Address") {
- peek(mandatoryQueue_in, CacheMsg) {
+ peek(mandatoryQueue_in, RubyRequest) {
APPEND_TRANSITION_COMMENT(in_msg.LineAddress);
}
}
}
action(uu_profileMiss, "\u", desc="Profile the demand miss") {
- peek(mandatoryQueue_in, CacheMsg) {
+ peek(mandatoryQueue_in, RubyRequest) {
if (L1DcacheMemory.isTagPresent(address)) {
L1DcacheMemory.profileMiss(in_msg);
} else {
}
action(zz_stallAndWaitMandatoryQueue, "\z", desc="Send the head of the mandatory queue to the back of the queue.") {
- peek(mandatoryQueue_in, CacheMsg) {
+ peek(mandatoryQueue_in, RubyRequest) {
APPEND_TRANSITION_COMMENT(in_msg.LineAddress);
}
stall_and_wait(mandatoryQueue_in, address);
}
action(kd_wakeUpDependents, "kd", desc="wake-up dependents") {
- wake_up_dependents(address);
+ wakeUpBuffers(address);
}
action(ka_wakeUpAllDependents, "ka", desc="wake-up all dependents") {
- wake_up_all_dependents();
+ wakeUpAllBuffers();
}
//*****************************************************
projects / gem5.git / blobdiff