| /* |
| * 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_TRANSL_HH__ |
| #define __DEV_ARM_SMMU_V3_TRANSL_HH__ |
| |
| #include "dev/arm/smmu_v3_proc.hh" |
| #include "dev/arm/smmu_v3_ptops.hh" |
| #include "dev/arm/smmu_v3_slaveifc.hh" |
| #include "mem/packet.hh" |
| |
| struct SMMUTranslRequest |
| { |
| Addr addr; |
| unsigned size; |
| uint32_t sid; // streamId |
| uint32_t ssid; // substreamId |
| bool isWrite; |
| bool isPrefetch; |
| bool isAtsRequest; |
| |
| PacketPtr pkt; |
| |
| static SMMUTranslRequest fromPacket(PacketPtr pkt, bool ats = false); |
| static SMMUTranslRequest prefetch(Addr addr, uint32_t sid, uint32_t ssid); |
| }; |
| |
| class SMMUTranslationProcess : public SMMUProcess |
| { |
| private: |
| struct TranslContext |
| { |
| bool stage1Enable; |
| bool stage2Enable; |
| Addr ttb0, ttb1, httb; |
| uint16_t asid; |
| uint16_t vmid; |
| uint8_t stage1TranslGranule; |
| uint8_t stage2TranslGranule; |
| }; |
| |
| enum FaultType |
| { |
| FAULT_NONE, |
| FAULT_TRANSLATION, // F_TRANSLATION |
| FAULT_PERMISSION, // F_PERMISSION |
| }; |
| |
| struct TranslResult |
| { |
| FaultType fault; |
| Addr addr; |
| Addr addrMask; |
| bool writable; |
| }; |
| |
| SMMUv3SlaveInterface &ifc; |
| |
| SMMUTranslRequest request; |
| TranslContext context; |
| |
| Tick recvTick; |
| Tick faultTick; |
| |
| virtual void main(Yield &yield); |
| |
| TranslResult bypass(Addr addr) const; |
| TranslResult smmuTranslation(Yield &yield); |
| |
| bool microTLBLookup(Yield &yield, TranslResult &tr); |
| bool ifcTLBLookup(Yield &yield, TranslResult &tr, bool &wasPrefetched); |
| bool smmuTLBLookup(Yield &yield, TranslResult &tr); |
| |
| void microTLBUpdate(Yield &yield, const TranslResult &tr); |
| void ifcTLBUpdate(Yield &yield, const TranslResult &tr); |
| void smmuTLBUpdate(Yield &yield, const TranslResult &tr); |
| |
| bool configCacheLookup(Yield &yield, TranslContext &tc); |
| void configCacheUpdate(Yield &yield, const TranslContext &tc); |
| bool findConfig(Yield &yield, TranslContext &tc, TranslResult &tr); |
| |
| void walkCacheLookup(Yield &yield, |
| const WalkCache::Entry *&walkEntry, |
| Addr addr, uint16_t asid, uint16_t vmid, |
| unsigned stage, unsigned level); |
| |
| void walkCacheUpdate(Yield &yield, Addr va, Addr vaMask, Addr pa, |
| unsigned stage, unsigned level, |
| bool leaf, uint8_t permissions); |
| |
| TranslResult walkStage1And2(Yield &yield, Addr addr, |
| const PageTableOps *pt_ops, |
| unsigned level, Addr walkPtr); |
| |
| TranslResult walkStage2(Yield &yield, Addr addr, bool final_tr, |
| const PageTableOps *pt_ops, |
| unsigned level, Addr walkPtr); |
| |
| TranslResult translateStage1And2(Yield &yield, Addr addr); |
| TranslResult translateStage2(Yield &yield, Addr addr, bool final_tr); |
| |
| TranslResult combineTranslations(const TranslResult &s1tr, |
| const TranslResult &s2tr) const; |
| |
| /** |
| * Used to force ordering on transactions with same |
| * (SID, SSID, 4k page) to avoid multiple identical |
| * page-table walks. |
| */ |
| bool hazard4kCheck(); |
| void hazard4kRegister(); |
| void hazard4kHold(Yield &yield); |
| void hazard4kRelease(); |
| |
| /** |
| * Used to force ordering on transactions with the same orderId. |
| * This attempts to model AXI IDs. |
| */ |
| void hazardIdRegister(); |
| void hazardIdHold(Yield &yield); |
| void hazardIdRelease(); |
| |
| void issuePrefetch(Addr addr); |
| |
| void completeTransaction(Yield &yield, const TranslResult &tr); |
| void completePrefetch(Yield &yield); |
| |
| void sendEvent(Yield &yield, const SMMUEvent &ev); |
| |
| void doReadSTE(Yield &yield, StreamTableEntry &ste, uint32_t sid); |
| void doReadCD(Yield &yield, ContextDescriptor &cd, |
| const StreamTableEntry &ste, uint32_t sid, uint32_t ssid); |
| void doReadConfig(Yield &yield, Addr addr, void *ptr, size_t size, |
| uint32_t sid, uint32_t ssid); |
| void doReadPTE(Yield &yield, Addr va, Addr addr, void *ptr, |
| unsigned stage, unsigned level); |
| |
| public: |
| SMMUTranslationProcess(const std::string &name, SMMUv3 &_smmu, |
| SMMUv3SlaveInterface &_ifc) |
| : |
| SMMUProcess(name, _smmu), |
| ifc(_ifc) |
| { |
| reinit(); |
| } |
| |
| virtual ~SMMUTranslationProcess() {} |
| |
| void beginTransaction(const SMMUTranslRequest &req); |
| void resumeTransaction(); |
| }; |
| |
| #endif /* __DEV_ARM_SMMU_V3_TRANSL_HH__ */ |
