/*
 * Copyright (c) 2020-2021 ARM Limited
 * All rights reserved
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * Copyright (c) 1999-2005 Mark D. Hill and David A. Wood
 * Copyright (c) 2013 Advanced Micro Devices, Inc.
 * 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.
 */

// External Types

//
// **PLEASE NOTE!**  When adding objects to this file you must also add a line
// in the src/mem/ruby/SConscript file.  Otherwise the external object's .hh
// file will not be copied to the protocol directory and you will encounter a
// undefined declaration error.
//

structure(MessageBuffer, buffer="yes", inport="yes", outport="yes",
                         external = "yes", primitive="yes") {
  // NOTE: it's recommended to use SLICC's built in resource stall management.
  // These functions are mostly for including resource utilization info
  // in debug traces dumped by the protocol.
  bool areNSlotsAvailable(int n, Tick curTime);
  int getSize(Tick curTime);
}

external_type(Scalar, primitive="yes");

structure(OutPort, external = "yes", primitive="yes") {
    void enqueueDeferredMessages(Addr addr, Tick curTime, Tick delay);
    bool isDeferredMsgMapEmpty(Addr addr);
}

structure(InPort, external = "yes", primitive="yes") {
  bool isReady(Tick current_time);
  Tick dequeue(Tick current_time);
  void recycle(Tick current_time, Tick recycle_latency);
  bool isEmpty();
  bool isStallMapEmpty();
  int getStallMapSize();
  bool hasStalledMsg(Addr addr);
}

external_type(NodeID, default="0", primitive="yes");
external_type(MachineID);

structure (Set, external = "yes", non_obj="yes") {
  void setSize(int);
  void add(NodeID);
  void addSet(Set);
  void remove(NodeID);
  void removeSet(Set);
  void broadcast();
  void addRandom();
  void clear();
  int count();
  bool isElement(NodeID);
  bool isEqual(Set);
  bool isSuperset(Set);
  bool intersectionIsEmpty(Set);
  NodeID smallestElement();
}

structure (NetDest, external = "yes", non_obj="yes") {
  void setSize(int);
  void setSize(int, int);
  void add(NodeID);
  void add(MachineID);
  void addSet(Set);
  void addNetDest(NetDest);
  void setNetDest(MachineType, Set);
  void remove(NodeID);
  void remove(MachineID);
  void removeSet(Set);
  void removeNetDest(NetDest);
  void broadcast();
  void broadcast(MachineType);
  void addRandom();
  void clear();
  Set toSet();
  int count();
  bool isElement(NodeID);
  bool isElement(MachineID);
  bool isSuperset(Set);
  bool isSuperset(NetDest);
  bool isEmpty();
  bool intersectionIsEmpty(Set);
  bool intersectionIsEmpty(NetDest);
  MachineID smallestElement();
  MachineID smallestElement(MachineType);
  NetDest OR(NetDest);
  NetDest AND(NetDest);
}

structure (Sequencer, external = "yes") {
  void readCallback(Addr, DataBlock);
  void readCallback(Addr, DataBlock, bool);
  void readCallback(Addr, DataBlock, bool, MachineType);
  void readCallback(Addr, DataBlock, bool, MachineType,
                    Cycles, Cycles, Cycles);

  void writeCallback(Addr, DataBlock);
  void writeCallback(Addr, DataBlock, bool);
  void writeCallback(Addr, DataBlock, bool, MachineType);
  void writeCallback(Addr, DataBlock, bool, MachineType,
                     Cycles, Cycles, Cycles);
  void writeUniqueCallback(Addr, DataBlock);

  // ll/sc support
  void writeCallbackScFail(Addr, DataBlock);
  bool llscCheckMonitor(Addr);
  void llscClearLocalMonitor();

  void evictionCallback(Addr);
  void recordRequestType(SequencerRequestType);
  bool checkResourceAvailable(CacheResourceType, Addr);
}

structure (HTMSequencer, interface="Sequencer", external = "yes") {
  // hardware transactional memory
  void htmCallback(Addr, HtmCallbackMode, HtmFailedInCacheReason);
}

structure(RubyRequest, desc="...", interface="Message", external="yes") {
  Addr LineAddress,       desc="Line address for this request";
  Addr PhysicalAddress,   desc="Physical address for this request";
  RubyRequestType Type,      desc="Type of request (LD, ST, etc)";
  Addr ProgramCounter,    desc="Program counter of the instruction that caused the miss";
  RubyAccessMode AccessMode, desc="user/supervisor access type";
  int Size,                  desc="size in bytes of access";
  PrefetchBit Prefetch,      desc="Is this a prefetch request";
  int contextId,             desc="this goes away but must be replace with Nilay";
  WriteMask writeMask,       desc="Writethrough mask";
  DataBlock WTData,          desc="Writethrough data block";
  int wfid,                  desc="Writethrough wavefront";
  uint64_t instSeqNum,       desc="Instruction sequence number";
  PacketPtr pkt,             desc="Packet associated with this request";
  bool htmFromTransaction,   desc="Memory request originates within a HTM transaction";
  int htmTransactionUid,     desc="Used to identify the unique HTM transaction that produced this request";

  RequestPtr getRequestPtr();
}

structure(AbstractCacheEntry, primitive="yes", external = "yes") {
  void changePermission(AccessPermission);
}

structure (DirectoryMemory, external = "yes") {
  AbstractCacheEntry allocate(Addr, AbstractCacheEntry);
  AbstractCacheEntry lookup(Addr);
  void deallocate(Addr);
  bool isPresent(Addr);
  void invalidateBlock(Addr);
  void recordRequestType(DirectoryRequestType);
}

structure (CacheMemory, external = "yes") {
  bool cacheAvail(Addr);
  Addr cacheProbe(Addr);
  AbstractCacheEntry getNullEntry();
  AbstractCacheEntry allocate(Addr, AbstractCacheEntry);
  AbstractCacheEntry allocate(Addr, AbstractCacheEntry, bool);
  void allocateVoid(Addr, AbstractCacheEntry);
  void deallocate(Addr);
  AbstractCacheEntry lookup(Addr);
  bool isTagPresent(Addr);
  Cycles getTagLatency();
  Cycles getDataLatency();
  void setMRU(Addr);
  void setMRU(Addr, int);
  void setMRU(AbstractCacheEntry);
  void recordRequestType(CacheRequestType, Addr);
  bool checkResourceAvailable(CacheResourceType, Addr);

  // hardware transactional memory
  void htmCommitTransaction();
  void htmAbortTransaction();

  int getCacheSize();
  int getNumBlocks();
  Addr getAddressAtIdx(int);

  void profileDemandHit();
  void profileDemandMiss();
  void profilePrefetchHit();
  void profilePrefetchMiss();
}

structure (WireBuffer, inport="yes", outport="yes", external = "yes") {

}

structure (DMASequencer, external = "yes") {
  void ackCallback(Addr);
  void dataCallback(DataBlock,Addr);
  void atomicCallback(DataBlock,Addr);
  void recordRequestType(CacheRequestType);
}

structure (TimerTable, inport="yes", external = "yes") {
  bool isReady(Tick);
  Addr nextAddress();
  void set(Addr, Tick);
  void unset(Addr);
  bool isSet(Addr);
}

structure (RubyPrefetcher, external = "yes") {
    void observeMiss(Addr, RubyRequestType);
    void observePfHit(Addr);
    void observePfMiss(Addr);
}