7155b8ba1e
Use the more flexible MMU translation generator which does not need to be told what page size to use, and which will be able to do flexible things like translate across varying page sizes. Change-Id: Ibfefc39d833f37bc35d703c505b193ea68988ab0 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50760 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Matthew Poremba <matthew.poremba@amd.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabe.black@gmail.com>
95 lines
3.6 KiB
C++
95 lines
3.6 KiB
C++
/*
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* Copyright (c) 2011 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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* Copyright (c) 2006 The Regents of The University of Michigan
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* All rights reserved.
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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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#ifndef __MEM_TRANSLATING_PORT_PROXY_HH__
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#define __MEM_TRANSLATING_PORT_PROXY_HH__
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#include <functional>
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#include "arch/generic/mmu.hh"
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#include "mem/port_proxy.hh"
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namespace gem5
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{
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class ThreadContext;
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/**
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* This proxy attempts to translate virtual addresses using the TLBs. If it
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* fails, subclasses can override the fixupAddr virtual method to try to
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* recover, and then attempt the translation again. If it still fails then the
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* access as a whole fails.
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*/
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class TranslatingPortProxy : public PortProxy
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{
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protected:
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ThreadContext* _tc;
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Request::Flags flags;
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virtual bool
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fixupRange(const TranslationGen::Range &range, BaseMMU::Mode mode) const
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{
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return false;
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}
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bool tryOnBlob(BaseMMU::Mode mode, TranslationGenPtr gen,
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std::function<void(const TranslationGen::Range &)> func) const;
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public:
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TranslatingPortProxy(ThreadContext *tc, Request::Flags _flags=0);
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/** Version of tryReadblob that translates virt->phys and deals
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* with page boundries. */
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bool tryReadBlob(Addr addr, void *p, int size) const override;
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/** Version of tryWriteBlob that translates virt->phys and deals
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* with page boundries. */
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bool tryWriteBlob(Addr addr, const void *p, int size) const override;
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/**
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* Fill size bytes starting at addr with byte value val.
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*/
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bool tryMemsetBlob(Addr address, uint8_t v, int size) const override;
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};
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} // namespace gem5
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#endif //__MEM_TRANSLATING_PORT_PROXY_HH__
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