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/*
* Copyright (c) 2012-2013, 2015-2017 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.
*
* Copyright (c) 2002-2005 The Regents of The University of Michigan
* Copyright (c) 2010 Advanced Micro Devices, Inc.
* 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.
*
* Authors: Erik Hallnor
* Dave Greene
* Andreas Hansson
*/
/**
* @file
* Miss Status and Handling Register (WriteQueueEntry) definitions.
*/
#include "mem/cache/write_queue_entry.hh"
#include <cassert>
#include <string>
#include "base/logging.hh"
#include "base/types.hh"
#include "mem/cache/base.hh"
#include "mem/request.hh"
inline void
WriteQueueEntry::TargetList::add(PacketPtr pkt, Tick readyTime,
Counter order)
{
emplace_back(pkt, readyTime, order);
}
bool
WriteQueueEntry::TargetList::trySatisfyFunctional(PacketPtr pkt)
{
for (auto& t : *this) {
if (pkt->trySatisfyFunctional(t.pkt)) {
return true;
}
}
return false;
}
void
WriteQueueEntry::TargetList::print(std::ostream &os, int verbosity,
const std::string &prefix) const
{
for (auto& t : *this) {
ccprintf(os, "%sFromCPU: ", prefix);
t.pkt->print(os, verbosity, "");
}
}
void
WriteQueueEntry::allocate(Addr blk_addr, unsigned blk_size, PacketPtr target,
Tick when_ready, Counter _order)
{
blkAddr = blk_addr;
blkSize = blk_size;
isSecure = target->isSecure();
readyTime = when_ready;
order = _order;
assert(target);
_isUncacheable = target->req->isUncacheable();
inService = false;
// we should never have more than a single target for cacheable
// writes (writebacks and clean evictions)
panic_if(!_isUncacheable && !targets.empty(),
"Write queue entry %#llx should never have more than one "
"cacheable target", blkAddr);
panic_if(!((target->isWrite() && _isUncacheable) ||
(target->isEviction() && !_isUncacheable) ||
target->cmd == MemCmd::WriteClean),
"Write queue entry %#llx should be an uncacheable write or "
"a cacheable eviction or a writeclean");
targets.add(target, when_ready, _order);
}
void
WriteQueueEntry::deallocate()
{
assert(targets.empty());
inService = false;
}
bool
WriteQueueEntry::trySatisfyFunctional(PacketPtr pkt)
{
// For printing, we treat the WriteQueueEntry as a whole as single
// entity. For other requests, we iterate over the individual
// targets since that's where the actual data lies.
if (pkt->isPrint()) {
pkt->trySatisfyFunctional(this, blkAddr, isSecure, blkSize, nullptr);
return false;
} else {
return targets.trySatisfyFunctional(pkt);
}
}
bool
WriteQueueEntry::sendPacket(BaseCache &cache)
{
return cache.sendWriteQueuePacket(this);
}
void
WriteQueueEntry::print(std::ostream &os, int verbosity,
const std::string &prefix) const
{
ccprintf(os, "%s[%#llx:%#llx](%s) %s %s %s state: %s %s %s %s %s\n",
prefix, blkAddr, blkAddr + blkSize - 1,
isSecure ? "s" : "ns",
_isUncacheable ? "Unc" : "",
inService ? "InSvc" : "");
ccprintf(os, "%s Targets:\n", prefix);
targets.print(os, verbosity, prefix + " ");
}
std::string
WriteQueueEntry::print() const
{
std::ostringstream str;
print(str);
return str.str();
}
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