d4273cc9a6
This patch removes the notion of a peer block size and instead sets the cache line size on the system level. Previously the size was set per cache, and communicated through the interconnect. There were plenty checks to ensure that everyone had the same size specified, and these checks are now removed. Another benefit that is not yet harnessed is that the cache line size is now known at construction time, rather than after the port binding. Hence, the block size can be locally stored and does not have to be queried every time it is used. A follow-on patch updates the configuration scripts accordingly.
273 lines
7.3 KiB
C++
273 lines
7.3 KiB
C++
/*
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* Copyright (c) 2012 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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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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* Authors: Andreas Hansson
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*/
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#ifndef __MEM_ADDR_MAPPER_HH__
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#define __MEM_ADDR_MAPPER_HH__
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#include "mem/mem_object.hh"
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#include "params/AddrMapper.hh"
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#include "params/RangeAddrMapper.hh"
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/**
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* An address mapper changes the packet addresses in going from the
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* slave port side of the mapper to the master port side. When the
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* slave port is queried for the address ranges, it also performs the
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* necessary range updates. Note that snoop requests that travel from
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* the master port (i.e. the memory side) to the slave port are
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* currently not modified.
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*/
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class AddrMapper : public MemObject
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{
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public:
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AddrMapper(const AddrMapperParams* params);
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virtual ~AddrMapper() { }
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virtual BaseMasterPort& getMasterPort(const std::string& if_name,
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PortID idx = InvalidPortID);
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virtual BaseSlavePort& getSlavePort(const std::string& if_name,
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PortID idx = InvalidPortID);
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virtual void init();
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protected:
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/**
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* This function does the actual remapping of one address to another.
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* It is pure virtual in this case to to allow any implementation
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* required.
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* @param addr the address to remap
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* @return the new address (can be unchanged)
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*/
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virtual Addr remapAddr(Addr addr) const = 0;
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class AddrMapperSenderState : public Packet::SenderState
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{
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public:
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/**
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* Construct a new sender state to remember the original address.
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*
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* @param _origAddr Address before remapping
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*/
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AddrMapperSenderState(Addr _origAddr) : origAddr(_origAddr)
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{ }
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/** Destructor */
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~AddrMapperSenderState() { }
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/** The original address the packet was destined for */
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Addr origAddr;
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};
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class MapperMasterPort : public MasterPort
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{
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public:
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MapperMasterPort(const std::string& _name, AddrMapper& _mapper)
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: MasterPort(_name, &_mapper), mapper(_mapper)
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{ }
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protected:
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void recvFunctionalSnoop(PacketPtr pkt)
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{
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mapper.recvFunctionalSnoop(pkt);
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}
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Tick recvAtomicSnoop(PacketPtr pkt)
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{
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return mapper.recvAtomicSnoop(pkt);
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}
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bool recvTimingResp(PacketPtr pkt)
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{
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return mapper.recvTimingResp(pkt);
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}
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void recvTimingSnoopReq(PacketPtr pkt)
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{
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mapper.recvTimingSnoopReq(pkt);
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}
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void recvRangeChange()
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{
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mapper.recvRangeChange();
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}
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bool isSnooping() const
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{
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return mapper.isSnooping();
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}
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void recvRetry()
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{
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mapper.recvRetryMaster();
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}
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private:
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AddrMapper& mapper;
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};
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/** Instance of master port, facing the memory side */
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MapperMasterPort masterPort;
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class MapperSlavePort : public SlavePort
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{
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public:
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MapperSlavePort(const std::string& _name, AddrMapper& _mapper)
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: SlavePort(_name, &_mapper), mapper(_mapper)
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{ }
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protected:
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void recvFunctional(PacketPtr pkt)
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{
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mapper.recvFunctional(pkt);
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}
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Tick recvAtomic(PacketPtr pkt)
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{
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return mapper.recvAtomic(pkt);
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}
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bool recvTimingReq(PacketPtr pkt)
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{
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return mapper.recvTimingReq(pkt);
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}
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bool recvTimingSnoopResp(PacketPtr pkt)
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{
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return mapper.recvTimingSnoopResp(pkt);
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}
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AddrRangeList getAddrRanges() const
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{
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return mapper.getAddrRanges();
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}
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void recvRetry()
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{
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mapper.recvRetrySlave();
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}
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private:
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AddrMapper& mapper;
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};
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/** Instance of slave port, i.e. on the CPU side */
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MapperSlavePort slavePort;
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void recvFunctional(PacketPtr pkt);
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void recvFunctionalSnoop(PacketPtr pkt);
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Tick recvAtomic(PacketPtr pkt);
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Tick recvAtomicSnoop(PacketPtr pkt);
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bool recvTimingReq(PacketPtr pkt);
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bool recvTimingResp(PacketPtr pkt);
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void recvTimingSnoopReq(PacketPtr pkt);
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bool recvTimingSnoopResp(PacketPtr pkt);
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virtual AddrRangeList getAddrRanges() const = 0;
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bool isSnooping() const;
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void recvRetryMaster();
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void recvRetrySlave();
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void recvRangeChange();
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};
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/**
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* Range address mapper that maps a set of original ranges to a set of
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* remapped ranges, where a specific range is of the same size
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* (original and remapped), only with an offset. It's useful for cases
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* where memory is mapped to two different locations
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*/
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class RangeAddrMapper : public AddrMapper
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{
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public:
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RangeAddrMapper(const RangeAddrMapperParams* p);
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~RangeAddrMapper() { }
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AddrRangeList getAddrRanges() const;
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protected:
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/**
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* This contains a list of ranges the should be remapped. It must
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* be the exact same length as remappedRanges which describes what
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* manipulation should be done to each range.
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*/
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std::vector<AddrRange> originalRanges;
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/**
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* This contains a list of ranges that addresses should be
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* remapped to. See the description for originalRanges above
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*/
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std::vector<AddrRange> remappedRanges;
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Addr remapAddr(Addr addr) const;
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};
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#endif //__MEM_ADDR_MAPPER_HH__
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