multi.hh revision 13991
113991Sandreas.sandberg@arm.com/* 213991Sandreas.sandberg@arm.com * Copyright (c) 2014, 2019 ARM Limited 313991Sandreas.sandberg@arm.com * All rights reserved 413991Sandreas.sandberg@arm.com * 513991Sandreas.sandberg@arm.com * The license below extends only to copyright in the software and shall 613991Sandreas.sandberg@arm.com * not be construed as granting a license to any other intellectual 713991Sandreas.sandberg@arm.com * property including but not limited to intellectual property relating 813991Sandreas.sandberg@arm.com * to a hardware implementation of the functionality of the software 913991Sandreas.sandberg@arm.com * licensed hereunder. You may use the software subject to the license 1013991Sandreas.sandberg@arm.com * terms below provided that you ensure that this notice is replicated 1113991Sandreas.sandberg@arm.com * unmodified and in its entirety in all distributions of the software, 1213991Sandreas.sandberg@arm.com * modified or unmodified, in source code or in binary form. 1313991Sandreas.sandberg@arm.com * 1413991Sandreas.sandberg@arm.com * Redistribution and use in source and binary forms, with or without 1513991Sandreas.sandberg@arm.com * modification, are permitted provided that the following conditions are 1613991Sandreas.sandberg@arm.com * met: redistributions of source code must retain the above copyright 1713991Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer; 1813991Sandreas.sandberg@arm.com * redistributions in binary form must reproduce the above copyright 1913991Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer in the 2013991Sandreas.sandberg@arm.com * documentation and/or other materials provided with the distribution; 2113991Sandreas.sandberg@arm.com * neither the name of the copyright holders nor the names of its 2213991Sandreas.sandberg@arm.com * contributors may be used to endorse or promote products derived from 2313991Sandreas.sandberg@arm.com * this software without specific prior written permission. 2413991Sandreas.sandberg@arm.com * 2513991Sandreas.sandberg@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2613991Sandreas.sandberg@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2713991Sandreas.sandberg@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2813991Sandreas.sandberg@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2913991Sandreas.sandberg@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3013991Sandreas.sandberg@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3113991Sandreas.sandberg@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3213991Sandreas.sandberg@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3313991Sandreas.sandberg@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3413991Sandreas.sandberg@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3513991Sandreas.sandberg@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3613991Sandreas.sandberg@arm.com * 3713991Sandreas.sandberg@arm.com * Authors: Mitch Hayenga 3813991Sandreas.sandberg@arm.com * Andreas Sandberg 3913991Sandreas.sandberg@arm.com */ 4013991Sandreas.sandberg@arm.com 4113991Sandreas.sandberg@arm.com#ifndef __MEM_CACHE_PREFETCH_MULTI_HH__ 4213991Sandreas.sandberg@arm.com#define __MEM_CACHE_PREFETCH_MULTI_HH__ 4313991Sandreas.sandberg@arm.com 4413991Sandreas.sandberg@arm.com#include "mem/cache/prefetch/base.hh" 4513991Sandreas.sandberg@arm.com 4613991Sandreas.sandberg@arm.comstruct MultiPrefetcherParams; 4713991Sandreas.sandberg@arm.com 4813991Sandreas.sandberg@arm.comclass MultiPrefetcher : public BasePrefetcher 4913991Sandreas.sandberg@arm.com{ 5013991Sandreas.sandberg@arm.com public: // SimObject 5113991Sandreas.sandberg@arm.com MultiPrefetcher(const MultiPrefetcherParams *p); 5213991Sandreas.sandberg@arm.com 5313991Sandreas.sandberg@arm.com public: // BasePrefetcher 5413991Sandreas.sandberg@arm.com void setCache(BaseCache *_cache) override; 5513991Sandreas.sandberg@arm.com PacketPtr getPacket() override; 5613991Sandreas.sandberg@arm.com Tick nextPrefetchReadyTime() const override; 5713991Sandreas.sandberg@arm.com 5813991Sandreas.sandberg@arm.com /** @{ */ 5913991Sandreas.sandberg@arm.com /** 6013991Sandreas.sandberg@arm.com * Ignore notifications since each sub-prefetcher already gets a 6113991Sandreas.sandberg@arm.com * notification through their probes-based interface. 6213991Sandreas.sandberg@arm.com */ 6313991Sandreas.sandberg@arm.com void notify(const PacketPtr &pkt, const PrefetchInfo &pfi) override {}; 6413991Sandreas.sandberg@arm.com void notifyFill(const PacketPtr &pkt) override {}; 6513991Sandreas.sandberg@arm.com /** @} */ 6613991Sandreas.sandberg@arm.com 6713991Sandreas.sandberg@arm.com protected: 6813991Sandreas.sandberg@arm.com /** List of sub-prefetchers ordered by priority. */ 6913991Sandreas.sandberg@arm.com std::list<BasePrefetcher *> prefetchers; 7013991Sandreas.sandberg@arm.com}; 7113991Sandreas.sandberg@arm.com 7213991Sandreas.sandberg@arm.com#endif //__MEM_CACHE_PREFETCH_MULTI_HH__ 73