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/*
* Copyright (c) 2009 Advanced Micro Devices, Inc.
* Copyright (c) 2011 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_SYSTEM_RUBYPORT_HH__
#define __MEM_RUBY_SYSTEM_RUBYPORT_HH__
#include <cassert>
#include <string>
#include "mem/protocol/RequestStatus.hh"
#include "mem/ruby/system/System.hh"
#include "mem/mem_object.hh"
#include "mem/physical.hh"
#include "mem/tport.hh"
#include "params/RubyPort.hh"
class MessageBuffer;
class AbstractController;
class RubyPort : public MemObject
{
public:
class M5Port : public QueuedPort
{
private:
PacketQueue queue;
RubyPort *ruby_port;
RubySystem* ruby_system;
bool _onRetryList;
bool access_phys_mem;
public:
M5Port(const std::string &_name, RubyPort *_port,
RubySystem*_system, bool _access_phys_mem);
bool sendNextCycle(PacketPtr pkt);
void hitCallback(PacketPtr pkt);
void evictionCallback(const Address& address);
unsigned deviceBlockSize() const;
bool onRetryList()
{ return _onRetryList; }
void onRetryList(bool newVal)
{ _onRetryList = newVal; }
protected:
virtual bool recvTiming(PacketPtr pkt);
virtual Tick recvAtomic(PacketPtr pkt);
virtual void recvFunctional(PacketPtr pkt);
private:
bool isPhysMemAddress(Addr addr);
bool doFunctionalRead(PacketPtr pkt);
bool doFunctionalWrite(PacketPtr pkt);
};
friend class M5Port;
class PioPort : public QueuedPort
{
private:
PacketQueue queue;
RubyPort *ruby_port;
public:
PioPort(const std::string &_name, RubyPort *_port);
bool sendNextCycle(PacketPtr pkt);
protected:
virtual bool recvTiming(PacketPtr pkt);
virtual Tick recvAtomic(PacketPtr pkt);
virtual void recvFunctional(PacketPtr pkt) { }
};
friend class PioPort;
struct SenderState : public Packet::SenderState
{
M5Port* port;
Packet::SenderState *saved;
SenderState(M5Port* _port, Packet::SenderState *sender_state = NULL)
: port(_port), saved(sender_state)
{}
};
typedef RubyPortParams Params;
RubyPort(const Params *p);
virtual ~RubyPort() {}
void init();
Port *getPort(const std::string &if_name, int idx);
virtual RequestStatus makeRequest(PacketPtr pkt) = 0;
virtual int outstandingCount() const = 0;
virtual bool isDeadlockEventScheduled() const = 0;
virtual void descheduleDeadlockEvent() = 0;
//
// Called by the controller to give the sequencer a pointer.
// A pointer to the controller is needed for atomic support.
//
void setController(AbstractController* _cntrl) { m_controller = _cntrl; }
int getId() { return m_version; }
unsigned int drain(Event *de);
protected:
const std::string m_name;
void ruby_hit_callback(PacketPtr pkt);
void testDrainComplete();
void ruby_eviction_callback(const Address& address);
int m_version;
AbstractController* m_controller;
MessageBuffer* m_mandatory_q_ptr;
PioPort pio_port;
bool m_usingRubyTester;
private:
void addToRetryList(M5Port * port)
{
if (!port->onRetryList()) {
port->onRetryList(true);
retryList.push_back(port);
waitingOnSequencer = true;
}
}
unsigned int getDrainCount(Event *de);
uint16_t m_port_id;
uint64_t m_request_cnt;
PioPort physMemPort;
/*! Vector of CPU Port attached to this Ruby port. */
typedef std::vector<M5Port*>::iterator CpuPortIter;
std::vector<M5Port*> cpu_ports;
Event *drainEvent;
PhysicalMemory* physmem;
RubySystem* ruby_system;
//
// Based on similar code in the M5 bus. Stores pointers to those ports
// that should be called when the Sequencer becomes available after a stall.
//
std::list<M5Port*> retryList;
bool waitingOnSequencer;
bool access_phys_mem;
};
#endif // __MEM_RUBY_SYSTEM_RUBYPORT_HH__
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