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/*
* Copyright (c) 2009 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.
*/
#ifndef __MEM_RUBY_SLICC_INTERFACE_ABSTRACTCONTROLLER_HH__
#define __MEM_RUBY_SLICC_INTERFACE_ABSTRACTCONTROLLER_HH__
#include <iostream>
#include <string>
#include "base/callback.hh"
#include "mem/protocol/AccessPermission.hh"
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/common/DataBlock.hh"
#include "mem/ruby/common/Histogram.hh"
#include "mem/ruby/common/MachineID.hh"
#include "mem/ruby/network/MessageBuffer.hh"
#include "mem/ruby/network/Network.hh"
#include "mem/ruby/system/CacheRecorder.hh"
#include "mem/packet.hh"
#include "params/RubyController.hh"
#include "sim/clocked_object.hh"
class Network;
class AbstractController : public ClockedObject, public Consumer
{
public:
typedef RubyControllerParams Params;
AbstractController(const Params *p);
void init();
const Params *params() const { return (const Params *)_params; }
const NodeID getVersion() const { return m_machineID.getNum(); }
const MachineType getType() const { return m_machineID.getType(); }
void initNetworkPtr(Network* net_ptr) { m_net_ptr = net_ptr; }
// return instance name
void blockOnQueue(Address, MessageBuffer*);
void unblock(Address);
virtual MessageBuffer* getMandatoryQueue() const = 0;
virtual AccessPermission getAccessPermission(const Address& addr) = 0;
virtual DataBlock& getDataBlock(const Address& addr) = 0;
virtual void print(std::ostream & out) const = 0;
virtual void wakeup() = 0;
virtual void resetStats() = 0;
virtual void regStats();
virtual void recordCacheTrace(int cntrl, CacheRecorder* tr) = 0;
virtual Sequencer* getSequencer() const = 0;
//! These functions are used by ruby system to read/write the message
//! queues that exist with in the controller.
//! The boolean return value indicates if the read was performed
//! successfully.
virtual bool functionalReadBuffers(PacketPtr&) = 0;
//! The return value indicates the number of messages written with the
//! data from the packet.
virtual uint32_t functionalWriteBuffers(PacketPtr&) = 0;
//! Function for enqueuing a prefetch request
virtual void enqueuePrefetch(const Address&, const RubyRequestType&)
{ fatal("Prefetches not implemented!");}
//! Function for collating statistics from all the controllers of this
//! particular type. This function should only be called from the
//! version 0 of this controller type.
virtual void collateStats()
{fatal("collateStats() should be overridden!");}
//! Set the message buffer with given name.
virtual void setNetQueue(const std::string& name, MessageBuffer *b) = 0;
public:
MachineID getMachineID() const { return m_machineID; }
Stats::Histogram& getDelayHist() { return m_delayHistogram; }
Stats::Histogram& getDelayVCHist(uint32_t index)
{ return *(m_delayVCHistogram[index]); }
protected:
//! Profiles original cache requests including PUTs
void profileRequest(const std::string &request);
//! Profiles the delay associated with messages.
void profileMsgDelay(uint32_t virtualNetwork, Cycles delay);
void stallBuffer(MessageBuffer* buf, Address addr);
void wakeUpBuffers(Address addr);
void wakeUpAllBuffers(Address addr);
void wakeUpAllBuffers();
protected:
NodeID m_version;
MachineID m_machineID;
NodeID m_clusterID;
Network* m_net_ptr;
bool m_is_blocking;
std::map<Address, MessageBuffer*> m_block_map;
typedef std::vector<MessageBuffer*> MsgVecType;
typedef std::map< Address, MsgVecType* > WaitingBufType;
WaitingBufType m_waiting_buffers;
unsigned int m_in_ports;
unsigned int m_cur_in_port;
int m_number_of_TBEs;
int m_transitions_per_cycle;
unsigned int m_buffer_size;
Cycles m_recycle_latency;
//! Counter for the number of cycles when the transitions carried out
//! were equal to the maximum allowed
Stats::Scalar m_fully_busy_cycles;
//! Histogram for profiling delay for the messages this controller
//! cares for
Stats::Histogram m_delayHistogram;
std::vector<Stats::Histogram *> m_delayVCHistogram;
//! Callback class used for collating statistics from all the
//! controller of this type.
class StatsCallback : public Callback
{
private:
AbstractController *ctr;
public:
virtual ~StatsCallback() {}
StatsCallback(AbstractController *_ctr) : ctr(_ctr) {}
void process() {ctr->collateStats();}
};
};
#endif // __MEM_RUBY_SLICC_INTERFACE_ABSTRACTCONTROLLER_HH__
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