91d83cc8a1
The create() method on Params structs usually instantiate SimObjects using a constructor which takes the Params struct as a parameter somehow. There has been a lot of needless variation in how that was done, making it annoying to pass Params down to base classes. Some of the different forms were: const Params & Params & Params * const Params * Params const* This change goes through and fixes up every constructor and every create() method to use the const Params & form. We use a reference because the Params struct should never be null. We use const because neither the create method nor the consuming object should modify the record of the parameters as they came in from the config. That would make consuming them not idempotent, and make it impossible to tell what the actual simulation configuration was since it would change from any user visible form (config script, config.ini, dot pdf output). Change-Id: I77453cba52fdcfd5f4eec92dfb0bddb5a9945f31 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35938 Reviewed-by: Gabe Black <gabeblack@google.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com>
89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
/*
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* Copyright (c) 2008 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
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#define __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
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#include <memory>
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#include <ostream>
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#include <unordered_map>
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#include "mem/ruby/common/Address.hh"
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#include "mem/ruby/common/DataBlock.hh"
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#include "mem/ruby/protocol/DMASequencerRequestType.hh"
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#include "mem/ruby/system/RubyPort.hh"
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#include "params/DMASequencer.hh"
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struct DMARequest
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{
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DMARequest(uint64_t start_paddr, int len, bool write, int bytes_completed,
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int bytes_issued, uint8_t *data, PacketPtr pkt);
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uint64_t start_paddr;
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int len;
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bool write;
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int bytes_completed;
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int bytes_issued;
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uint8_t *data;
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PacketPtr pkt;
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};
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class DMASequencer : public RubyPort
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{
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public:
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typedef DMASequencerParams Params;
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DMASequencer(const Params &);
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void init() override;
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/* external interface */
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RequestStatus makeRequest(PacketPtr pkt) override;
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bool busy() { return m_outstanding_count > 0; }
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int outstandingCount() const override { return m_outstanding_count; }
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bool isDeadlockEventScheduled() const override { return false; }
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void descheduleDeadlockEvent() override {}
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/* SLICC callback */
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void dataCallback(const DataBlock &dblk, const Addr &addr);
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void ackCallback(const Addr &addr);
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void recordRequestType(DMASequencerRequestType requestType);
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private:
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void issueNext(const Addr &addr);
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uint64_t m_data_block_mask;
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typedef std::unordered_map<Addr, DMARequest> RequestTable;
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RequestTable m_RequestTable;
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int m_outstanding_count;
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int m_max_outstanding_requests;
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};
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#endif // __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
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