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/*
* Copyright (c) 2013, 2018-2019 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: Stan Czerniawski
*/
#ifndef __DEV_ARM_SMMU_V3_SLAVEIFC_HH__
#define __DEV_ARM_SMMU_V3_SLAVEIFC_HH__
#include <list>
#include "dev/arm/smmu_v3_caches.hh"
#include "dev/arm/smmu_v3_defs.hh"
#include "dev/arm/smmu_v3_events.hh"
#include "dev/arm/smmu_v3_ports.hh"
#include "dev/arm/smmu_v3_proc.hh"
#include "params/SMMUv3SlaveInterface.hh"
#include "sim/clocked_object.hh"
class SMMUTranslationProcess;
class SMMUv3;
class SMMUSlavePort;
class SMMUv3SlaveInterface : public ClockedObject
{
protected:
friend class SMMUTranslationProcess;
public:
SMMUv3 *smmu;
SMMUTLB* microTLB;
SMMUTLB* mainTLB;
const bool microTLBEnable;
const bool mainTLBEnable;
SMMUSemaphore slavePortSem;
SMMUSemaphore microTLBSem;
SMMUSemaphore mainTLBSem;
const Cycles microTLBLat;
const Cycles mainTLBLat;
SMMUSlavePort *slavePort;
SMMUATSSlavePort atsSlavePort;
SMMUATSMasterPort atsMasterPort;
// in bytes
const unsigned portWidth;
unsigned wrBufSlotsRemaining;
unsigned xlateSlotsRemaining;
unsigned pendingMemAccesses;
const bool prefetchEnable;
const bool prefetchReserveLastWay;
std::list<SMMUTranslationProcess *> duplicateReqs;
SMMUSignal duplicateReqRemoved;
std::list<SMMUTranslationProcess *> dependentReads[SMMU_MAX_TRANS_ID];
std::list<SMMUTranslationProcess *> dependentWrites[SMMU_MAX_TRANS_ID];
SMMUSignal dependentReqRemoved;
// Receiving translation requests from the master device
Tick recvAtomic(PacketPtr pkt);
bool recvTimingReq(PacketPtr pkt);
void schedTimingResp(PacketPtr pkt);
Tick atsSlaveRecvAtomic(PacketPtr pkt);
bool atsSlaveRecvTimingReq(PacketPtr pkt);
bool atsMasterRecvTimingResp(PacketPtr pkt);
void schedAtsTimingResp(PacketPtr pkt);
void scheduleDeviceRetry();
void sendDeviceRetry();
void atsSendDeviceRetry();
bool deviceNeedsRetry;
bool atsDeviceNeedsRetry;
SMMUDeviceRetryEvent sendDeviceRetryEvent;
EventWrapper<
SMMUv3SlaveInterface,
&SMMUv3SlaveInterface::atsSendDeviceRetry> atsSendDeviceRetryEvent;
Port& getPort(const std::string &name, PortID id) override;
public:
SMMUv3SlaveInterface(const SMMUv3SlaveInterfaceParams *p);
~SMMUv3SlaveInterface()
{
delete microTLB;
delete mainTLB;
}
const SMMUv3SlaveInterfaceParams *
params() const
{
return static_cast<const SMMUv3SlaveInterfaceParams *>(_params);
}
DrainState drain() override;
void setSMMU(SMMUv3 *_smmu) { smmu = _smmu; }
void sendRange();
};
#endif /* __DEV_ARM_SMMU_V3_SLAVEIFC_HH__ */
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