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+/*
+ * Copyright (c) 2014, 2019 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.
+ *
+ * Authors: Mitch Hayenga
+ * Andreas Sandberg
+ */
+
+#include "mem/cache/prefetch/multi.hh"
+
+#include "params/MultiPrefetcher.hh"
+
+MultiPrefetcher::MultiPrefetcher(const MultiPrefetcherParams *p)
+ : BasePrefetcher(p),
+ prefetchers(p->prefetchers.begin(), p->prefetchers.end())
+{
+}
+
+void
+MultiPrefetcher::setCache(BaseCache *_cache)
+{
+ for (auto pf : prefetchers)
+ pf->setCache(_cache);
+}
+
+Tick
+MultiPrefetcher::nextPrefetchReadyTime() const
+{
+ Tick next_ready = MaxTick;
+
+ for (auto pf : prefetchers)
+ next_ready = std::min(next_ready, pf->nextPrefetchReadyTime());
+
+ return next_ready;
+}
+
+PacketPtr
+MultiPrefetcher::getPacket()
+{
+ for (auto pf : prefetchers) {
+ if (pf->nextPrefetchReadyTime() <= curTick()) {
+ PacketPtr pkt = pf->getPacket();
+ panic_if(!pkt, "Prefetcher is ready but didn't return a packet.");
+ return pkt;
+ }
+ }
+
+ return nullptr;
+}
+
+
+MultiPrefetcher*
+MultiPrefetcherParams::create()
+{
+ return new MultiPrefetcher(this);
+}