blob: e24cb57ee7b5a65bbec452350a8aec75dc60ab80 [file] [log] [blame]
/*
* Copyright (c) 2020 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.
*
* 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_HTMSEQUENCER_HH__
#define __MEM_RUBY_SYSTEM_HTMSEQUENCER_HH__
#include <cassert>
#include <iostream>
#include "mem/htm.hh"
#include "mem/ruby/protocol/HtmCallbackMode.hh"
#include "mem/ruby/protocol/HtmFailedInCacheReason.hh"
#include "mem/ruby/system/RubyPort.hh"
#include "mem/ruby/system/Sequencer.hh"
#include "params/RubyHTMSequencer.hh"
class HTMSequencer : public Sequencer
{
public:
HTMSequencer(const RubyHTMSequencerParams &p);
~HTMSequencer();
// callback to acknowledge HTM requests and
// notify cpu core when htm transaction fails in cache
void htmCallback(Addr,
const HtmCallbackMode,
const HtmFailedInCacheReason);
bool empty() const override;
void print(std::ostream& out) const override;
void regStats() override;
void wakeup() override;
private:
/**
* Htm return code conversion
*
* This helper is a hack meant to convert the autogenerated ruby
* enum (HtmFailedInCacheReason) to the manually defined one
* (HtmCacheFailure). This is needed since the cpu code would
* otherwise have to include the ruby generated headers in order
* to handle the htm return code.
*/
HtmCacheFailure htmRetCodeConversion(const HtmFailedInCacheReason rc);
void rubyHtmCallback(PacketPtr pkt, const HtmFailedInCacheReason fail_r);
RequestStatus insertRequest(PacketPtr pkt,
RubyRequestType primary_type,
RubyRequestType secondary_type) override;
// Private copy constructor and assignment operator
HTMSequencer(const HTMSequencer& obj);
HTMSequencer& operator=(const HTMSequencer& obj);
// table/queue for hardware transactional memory commands
// these do not have an address so a deque/queue is used instead.
std::deque<SequencerRequest*> m_htmCmdRequestTable;
Tick m_htmstart_tick;
Counter m_htmstart_instruction;
//! Histogram of cycle latencies of HTM transactions
Stats::Histogram m_htm_transaction_cycles;
//! Histogram of instruction lengths of HTM transactions
Stats::Histogram m_htm_transaction_instructions;
//! Causes for HTM transaction aborts
Stats::Vector m_htm_transaction_abort_cause;
};
inline std::ostream&
operator<<(std::ostream& out, const HTMSequencer& obj)
{
obj.print(out);
out << std::flush;
return out;
}
#endif // __MEM_RUBY_SYSTEM_HTMSEQUENCER_HH__