packet.hh revision 10885
12381SN/A/* 210694SMarco.Balboni@ARM.com * Copyright (c) 2012-2015 ARM Limited 38949Sandreas.hansson@arm.com * All rights reserved 48949Sandreas.hansson@arm.com * 58949Sandreas.hansson@arm.com * The license below extends only to copyright in the software and shall 68949Sandreas.hansson@arm.com * not be construed as granting a license to any other intellectual 78949Sandreas.hansson@arm.com * property including but not limited to intellectual property relating 88949Sandreas.hansson@arm.com * to a hardware implementation of the functionality of the software 98949Sandreas.hansson@arm.com * licensed hereunder. You may use the software subject to the license 108949Sandreas.hansson@arm.com * terms below provided that you ensure that this notice is replicated 118949Sandreas.hansson@arm.com * unmodified and in its entirety in all distributions of the software, 128949Sandreas.hansson@arm.com * modified or unmodified, in source code or in binary form. 138949Sandreas.hansson@arm.com * 142592SN/A * Copyright (c) 2006 The Regents of The University of Michigan 157636Ssteve.reinhardt@amd.com * Copyright (c) 2010 Advanced Micro Devices, Inc. 162381SN/A * All rights reserved. 172381SN/A * 182381SN/A * Redistribution and use in source and binary forms, with or without 192381SN/A * modification, are permitted provided that the following conditions are 202381SN/A * met: redistributions of source code must retain the above copyright 212381SN/A * notice, this list of conditions and the following disclaimer; 222381SN/A * redistributions in binary form must reproduce the above copyright 232381SN/A * notice, this list of conditions and the following disclaimer in the 242381SN/A * documentation and/or other materials provided with the distribution; 252381SN/A * neither the name of the copyright holders nor the names of its 262381SN/A * contributors may be used to endorse or promote products derived from 272381SN/A * this software without specific prior written permission. 282381SN/A * 292381SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 302381SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 312381SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 322381SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 332381SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 342381SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 352381SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 362381SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 372381SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 382381SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 392381SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Ron Dreslinski 422665Ssaidi@eecs.umich.edu * Steve Reinhardt 432665Ssaidi@eecs.umich.edu * Ali Saidi 449031Sandreas.hansson@arm.com * Andreas Hansson 452381SN/A */ 462381SN/A 472381SN/A/** 482381SN/A * @file 492662Sstever@eecs.umich.edu * Declaration of the Packet class. 502381SN/A */ 512381SN/A 522381SN/A#ifndef __MEM_PACKET_HH__ 532381SN/A#define __MEM_PACKET_HH__ 542381SN/A 558229Snate@binkert.org#include <bitset> 563348Sbinkertn@umich.edu#include <cassert> 573348Sbinkertn@umich.edu#include <list> 583348Sbinkertn@umich.edu 595735Snate@binkert.org#include "base/cast.hh" 604024Sbinkertn@umich.edu#include "base/compiler.hh" 615735Snate@binkert.org#include "base/flags.hh" 623940Ssaidi@eecs.umich.edu#include "base/misc.hh" 635314Sstever@gmail.com#include "base/printable.hh" 646216Snate@binkert.org#include "base/types.hh" 652392SN/A#include "mem/request.hh" 664167Sbinkertn@umich.edu#include "sim/core.hh" 672394SN/A 688737Skoansin.tan@gmail.comclass Packet; 693349Sbinkertn@umich.edutypedef Packet *PacketPtr; 702394SN/Atypedef uint8_t* PacketDataPtr; 712812Srdreslin@umich.edutypedef std::list<PacketPtr> PacketList; 722812Srdreslin@umich.edu 734022Sstever@eecs.umich.educlass MemCmd 744022Sstever@eecs.umich.edu{ 755735Snate@binkert.org friend class Packet; 765735Snate@binkert.org 774022Sstever@eecs.umich.edu public: 785735Snate@binkert.org /** 795735Snate@binkert.org * List of all commands associated with a packet. 805735Snate@binkert.org */ 814022Sstever@eecs.umich.edu enum Command 824022Sstever@eecs.umich.edu { 834022Sstever@eecs.umich.edu InvalidCmd, 844022Sstever@eecs.umich.edu ReadReq, 854473Sstever@eecs.umich.edu ReadResp, 865319Sstever@gmail.com ReadRespWithInvalidate, 874022Sstever@eecs.umich.edu WriteReq, 884022Sstever@eecs.umich.edu WriteResp, 894022Sstever@eecs.umich.edu Writeback, 9010883Sali.jafri@arm.com CleanEvict, 914022Sstever@eecs.umich.edu SoftPFReq, 924022Sstever@eecs.umich.edu HardPFReq, 934022Sstever@eecs.umich.edu SoftPFResp, 944022Sstever@eecs.umich.edu HardPFResp, 954022Sstever@eecs.umich.edu WriteInvalidateReq, 964022Sstever@eecs.umich.edu WriteInvalidateResp, 974022Sstever@eecs.umich.edu UpgradeReq, 987465Ssteve.reinhardt@amd.com SCUpgradeReq, // Special "weak" upgrade for StoreCond 994628Sstever@eecs.umich.edu UpgradeResp, 1007465Ssteve.reinhardt@amd.com SCUpgradeFailReq, // Failed SCUpgradeReq in MSHR (never sent) 1017465Ssteve.reinhardt@amd.com UpgradeFailResp, // Valid for SCUpgradeReq only 1024022Sstever@eecs.umich.edu ReadExReq, 1034022Sstever@eecs.umich.edu ReadExResp, 10410885Sandreas.hansson@arm.com ReadCleanReq, 10510885Sandreas.hansson@arm.com ReadSharedReq, 1064626Sstever@eecs.umich.edu LoadLockedReq, 1074626Sstever@eecs.umich.edu StoreCondReq, 1087669Ssteve.reinhardt@amd.com StoreCondFailReq, // Failed StoreCondReq in MSHR (never sent) 1094626Sstever@eecs.umich.edu StoreCondResp, 1104040Ssaidi@eecs.umich.edu SwapReq, 1114040Ssaidi@eecs.umich.edu SwapResp, 1125650Sgblack@eecs.umich.edu MessageReq, 1135650Sgblack@eecs.umich.edu MessageResp, 1144870Sstever@eecs.umich.edu // Error responses 1154870Sstever@eecs.umich.edu // @TODO these should be classified as responses rather than 1164870Sstever@eecs.umich.edu // requests; coding them as requests initially for backwards 1174870Sstever@eecs.umich.edu // compatibility 1184870Sstever@eecs.umich.edu InvalidDestError, // packet dest field invalid 1194870Sstever@eecs.umich.edu BadAddressError, // memory address invalid 1208436SBrad.Beckmann@amd.com FunctionalReadError, // unable to fulfill functional read 1218436SBrad.Beckmann@amd.com FunctionalWriteError, // unable to fulfill functional write 1225314Sstever@gmail.com // Fake simulator-only commands 1235314Sstever@gmail.com PrintReq, // Print state matching address 1248184Ssomayeh@cs.wisc.edu FlushReq, //request for a cache flush 1258716Snilay@cs.wisc.edu InvalidationReq, // request for address to be invalidated from lsq 1264022Sstever@eecs.umich.edu NUM_MEM_CMDS 1274022Sstever@eecs.umich.edu }; 1284022Sstever@eecs.umich.edu 1294022Sstever@eecs.umich.edu private: 1305735Snate@binkert.org /** 1315735Snate@binkert.org * List of command attributes. 1325735Snate@binkert.org */ 1334022Sstever@eecs.umich.edu enum Attribute 1344022Sstever@eecs.umich.edu { 1354626Sstever@eecs.umich.edu IsRead, //!< Data flows from responder to requester 1364626Sstever@eecs.umich.edu IsWrite, //!< Data flows from requester to responder 1377465Ssteve.reinhardt@amd.com IsUpgrade, 1384022Sstever@eecs.umich.edu IsInvalidate, 1394626Sstever@eecs.umich.edu NeedsExclusive, //!< Requires exclusive copy to complete in-cache 1404626Sstever@eecs.umich.edu IsRequest, //!< Issued by requester 1414626Sstever@eecs.umich.edu IsResponse, //!< Issue by responder 1424626Sstever@eecs.umich.edu NeedsResponse, //!< Requester needs response from target 1434022Sstever@eecs.umich.edu IsSWPrefetch, 1444022Sstever@eecs.umich.edu IsHWPrefetch, 1456076Sgblack@eecs.umich.edu IsLlsc, //!< Alpha/MIPS LL or SC access 1464626Sstever@eecs.umich.edu HasData, //!< There is an associated payload 1474870Sstever@eecs.umich.edu IsError, //!< Error response 1485314Sstever@gmail.com IsPrint, //!< Print state matching address (for debugging) 1498184Ssomayeh@cs.wisc.edu IsFlush, //!< Flush the address from caches 1504022Sstever@eecs.umich.edu NUM_COMMAND_ATTRIBUTES 1514022Sstever@eecs.umich.edu }; 1524022Sstever@eecs.umich.edu 1535735Snate@binkert.org /** 1545735Snate@binkert.org * Structure that defines attributes and other data associated 1555735Snate@binkert.org * with a Command. 1565735Snate@binkert.org */ 1575735Snate@binkert.org struct CommandInfo 1585735Snate@binkert.org { 1595735Snate@binkert.org /// Set of attribute flags. 1604022Sstever@eecs.umich.edu const std::bitset<NUM_COMMAND_ATTRIBUTES> attributes; 1615735Snate@binkert.org /// Corresponding response for requests; InvalidCmd if no 1625735Snate@binkert.org /// response is applicable. 1634022Sstever@eecs.umich.edu const Command response; 1645735Snate@binkert.org /// String representation (for printing) 1654022Sstever@eecs.umich.edu const std::string str; 1664022Sstever@eecs.umich.edu }; 1674022Sstever@eecs.umich.edu 1685735Snate@binkert.org /// Array to map Command enum to associated info. 1694022Sstever@eecs.umich.edu static const CommandInfo commandInfo[]; 1704022Sstever@eecs.umich.edu 1714022Sstever@eecs.umich.edu private: 1724022Sstever@eecs.umich.edu 1734022Sstever@eecs.umich.edu Command cmd; 1744022Sstever@eecs.umich.edu 1755735Snate@binkert.org bool 1765735Snate@binkert.org testCmdAttrib(MemCmd::Attribute attrib) const 1775735Snate@binkert.org { 1784022Sstever@eecs.umich.edu return commandInfo[cmd].attributes[attrib] != 0; 1794022Sstever@eecs.umich.edu } 1804022Sstever@eecs.umich.edu 1814022Sstever@eecs.umich.edu public: 1824022Sstever@eecs.umich.edu 18310583SCurtis.Dunham@arm.com bool isRead() const { return testCmdAttrib(IsRead); } 18410583SCurtis.Dunham@arm.com bool isWrite() const { return testCmdAttrib(IsWrite); } 18510583SCurtis.Dunham@arm.com bool isUpgrade() const { return testCmdAttrib(IsUpgrade); } 18610583SCurtis.Dunham@arm.com bool isRequest() const { return testCmdAttrib(IsRequest); } 18710583SCurtis.Dunham@arm.com bool isResponse() const { return testCmdAttrib(IsResponse); } 18810583SCurtis.Dunham@arm.com bool needsExclusive() const { return testCmdAttrib(NeedsExclusive); } 18910583SCurtis.Dunham@arm.com bool needsResponse() const { return testCmdAttrib(NeedsResponse); } 19010583SCurtis.Dunham@arm.com bool isInvalidate() const { return testCmdAttrib(IsInvalidate); } 19110583SCurtis.Dunham@arm.com bool isWriteInvalidate() const { return testCmdAttrib(IsWrite) && 19210583SCurtis.Dunham@arm.com testCmdAttrib(IsInvalidate); } 19310570Sandreas.hansson@arm.com 19410570Sandreas.hansson@arm.com /** 19510570Sandreas.hansson@arm.com * Check if this particular packet type carries payload data. Note 19610570Sandreas.hansson@arm.com * that this does not reflect if the data pointer of the packet is 19710570Sandreas.hansson@arm.com * valid or not. 19810570Sandreas.hansson@arm.com */ 1994022Sstever@eecs.umich.edu bool hasData() const { return testCmdAttrib(HasData); } 2006102Sgblack@eecs.umich.edu bool isLLSC() const { return testCmdAttrib(IsLlsc); } 20110343SCurtis.Dunham@arm.com bool isSWPrefetch() const { return testCmdAttrib(IsSWPrefetch); } 20210343SCurtis.Dunham@arm.com bool isHWPrefetch() const { return testCmdAttrib(IsHWPrefetch); } 20310343SCurtis.Dunham@arm.com bool isPrefetch() const { return testCmdAttrib(IsSWPrefetch) || 20410343SCurtis.Dunham@arm.com testCmdAttrib(IsHWPrefetch); } 2054870Sstever@eecs.umich.edu bool isError() const { return testCmdAttrib(IsError); } 2065314Sstever@gmail.com bool isPrint() const { return testCmdAttrib(IsPrint); } 2078184Ssomayeh@cs.wisc.edu bool isFlush() const { return testCmdAttrib(IsFlush); } 2084022Sstever@eecs.umich.edu 2095735Snate@binkert.org const Command 2105735Snate@binkert.org responseCommand() const 2115735Snate@binkert.org { 2124022Sstever@eecs.umich.edu return commandInfo[cmd].response; 2134022Sstever@eecs.umich.edu } 2144022Sstever@eecs.umich.edu 2155735Snate@binkert.org /// Return the string to a cmd given by idx. 2165735Snate@binkert.org const std::string &toString() const { return commandInfo[cmd].str; } 2174022Sstever@eecs.umich.edu int toInt() const { return (int)cmd; } 2184022Sstever@eecs.umich.edu 2195735Snate@binkert.org MemCmd(Command _cmd) : cmd(_cmd) { } 2205735Snate@binkert.org MemCmd(int _cmd) : cmd((Command)_cmd) { } 2215735Snate@binkert.org MemCmd() : cmd(InvalidCmd) { } 2224022Sstever@eecs.umich.edu 2235735Snate@binkert.org bool operator==(MemCmd c2) const { return (cmd == c2.cmd); } 2245735Snate@binkert.org bool operator!=(MemCmd c2) const { return (cmd != c2.cmd); } 2254022Sstever@eecs.umich.edu}; 2264022Sstever@eecs.umich.edu 2272381SN/A/** 2282662Sstever@eecs.umich.edu * A Packet is used to encapsulate a transfer between two objects in 2292662Sstever@eecs.umich.edu * the memory system (e.g., the L1 and L2 cache). (In contrast, a 2302662Sstever@eecs.umich.edu * single Request travels all the way from the requester to the 2312662Sstever@eecs.umich.edu * ultimate destination and back, possibly being conveyed by several 2322662Sstever@eecs.umich.edu * different Packets along the way.) 2332381SN/A */ 2349044SAli.Saidi@ARM.comclass Packet : public Printable 2352381SN/A{ 2362813Srdreslin@umich.edu public: 2375735Snate@binkert.org typedef uint32_t FlagsType; 2385735Snate@binkert.org typedef ::Flags<FlagsType> Flags; 2394022Sstever@eecs.umich.edu 2405735Snate@binkert.org private: 2415735Snate@binkert.org static const FlagsType PUBLIC_FLAGS = 0x00000000; 2425735Snate@binkert.org static const FlagsType PRIVATE_FLAGS = 0x00007F0F; 2435735Snate@binkert.org static const FlagsType COPY_FLAGS = 0x0000000F; 2445735Snate@binkert.org 2455735Snate@binkert.org static const FlagsType SHARED = 0x00000001; 2465735Snate@binkert.org // Special control flags 2475735Snate@binkert.org /// Special timing-mode atomic snoop for multi-level coherence. 2485735Snate@binkert.org static const FlagsType EXPRESS_SNOOP = 0x00000002; 2495735Snate@binkert.org /// Does supplier have exclusive copy? 2505735Snate@binkert.org /// Useful for multi-level coherence. 2515735Snate@binkert.org static const FlagsType SUPPLY_EXCLUSIVE = 0x00000004; 2525735Snate@binkert.org // Snoop response flags 2535735Snate@binkert.org static const FlagsType MEM_INHIBIT = 0x00000008; 2545735Snate@binkert.org /// Are the 'addr' and 'size' fields valid? 2555735Snate@binkert.org static const FlagsType VALID_ADDR = 0x00000100; 2565735Snate@binkert.org static const FlagsType VALID_SIZE = 0x00000200; 2575735Snate@binkert.org /// Is the data pointer set to a value that shouldn't be freed 2585735Snate@binkert.org /// when the packet is destroyed? 2595735Snate@binkert.org static const FlagsType STATIC_DATA = 0x00001000; 2605735Snate@binkert.org /// The data pointer points to a value that should be freed when 26110566Sandreas.hansson@arm.com /// the packet is destroyed. The pointer is assumed to be pointing 26210566Sandreas.hansson@arm.com /// to an array, and delete [] is consequently called 2635735Snate@binkert.org static const FlagsType DYNAMIC_DATA = 0x00002000; 2648436SBrad.Beckmann@amd.com /// suppress the error if this packet encounters a functional 2658436SBrad.Beckmann@amd.com /// access failure. 2668436SBrad.Beckmann@amd.com static const FlagsType SUPPRESS_FUNC_ERROR = 0x00008000; 26710763Sali.jafri@arm.com // Signal block present to squash prefetch and cache evict packets 26810763Sali.jafri@arm.com // through express snoop flag 26910763Sali.jafri@arm.com static const FlagsType BLOCK_CACHED = 0x00010000; 2705735Snate@binkert.org 2715735Snate@binkert.org Flags flags; 2725735Snate@binkert.org 2735735Snate@binkert.org public: 2744022Sstever@eecs.umich.edu typedef MemCmd::Command Command; 2754022Sstever@eecs.umich.edu 2765735Snate@binkert.org /// The command field of the packet. 2774870Sstever@eecs.umich.edu MemCmd cmd; 2784870Sstever@eecs.umich.edu 2795735Snate@binkert.org /// A pointer to the original request. 28010569Sandreas.hansson@arm.com const RequestPtr req; 2814870Sstever@eecs.umich.edu 2822566SN/A private: 2835735Snate@binkert.org /** 2845735Snate@binkert.org * A pointer to the data being transfered. It can be differnt 2855735Snate@binkert.org * sizes at each level of the heirarchy so it belongs in the 2865735Snate@binkert.org * packet, not request. This may or may not be populated when a 2875735Snate@binkert.org * responder recieves the packet. If not populated it memory should 2885735Snate@binkert.org * be allocated. 2892566SN/A */ 2902566SN/A PacketDataPtr data; 2912566SN/A 2925735Snate@binkert.org /// The address of the request. This address could be virtual or 2935735Snate@binkert.org /// physical, depending on the system configuration. 2942381SN/A Addr addr; 2952381SN/A 29610028SGiacomo.Gabrielli@arm.com /// True if the request targets the secure memory space. 29710028SGiacomo.Gabrielli@arm.com bool _isSecure; 29810028SGiacomo.Gabrielli@arm.com 2995735Snate@binkert.org /// The size of the request or transfer. 3006227Snate@binkert.org unsigned size; 3012381SN/A 3025735Snate@binkert.org /** 3035735Snate@binkert.org * The original value of the command field. Only valid when the 3044870Sstever@eecs.umich.edu * current command field is an error condition; in that case, the 3054870Sstever@eecs.umich.edu * previous contents of the command field are copied here. This 3064870Sstever@eecs.umich.edu * field is *not* set on non-error responses. 3074870Sstever@eecs.umich.edu */ 3084870Sstever@eecs.umich.edu MemCmd origCmd; 3094870Sstever@eecs.umich.edu 3108668Sgeoffrey.blake@arm.com /** 31110723Sandreas.hansson@arm.com * Track the bytes found that satisfy a functional read. 3128668Sgeoffrey.blake@arm.com */ 31310723Sandreas.hansson@arm.com std::vector<bool> bytesValid; 3148668Sgeoffrey.blake@arm.com 3152641Sstever@eecs.umich.edu public: 3162811Srdreslin@umich.edu 3179547Sandreas.hansson@arm.com /** 31810694SMarco.Balboni@ARM.com * The extra delay from seeing the packet until the header is 31910405Sandreas.hansson@arm.com * transmitted. This delay is used to communicate the crossbar 32010405Sandreas.hansson@arm.com * forwarding latency to the neighbouring object (e.g. a cache) 32110405Sandreas.hansson@arm.com * that actually makes the packet wait. As the delay is relative, 32210405Sandreas.hansson@arm.com * a 32-bit unsigned should be sufficient. 3239547Sandreas.hansson@arm.com */ 32410694SMarco.Balboni@ARM.com uint32_t headerDelay; 3253218Sgblack@eecs.umich.edu 3269547Sandreas.hansson@arm.com /** 32710694SMarco.Balboni@ARM.com * The extra pipelining delay from seeing the packet until the end of 32810694SMarco.Balboni@ARM.com * payload is transmitted by the component that provided it (if 32910694SMarco.Balboni@ARM.com * any). This includes the header delay. Similar to the header 33010694SMarco.Balboni@ARM.com * delay, this is used to make up for the fact that the 33110405Sandreas.hansson@arm.com * crossbar does not make the packet wait. As the delay is 33210405Sandreas.hansson@arm.com * relative, a 32-bit unsigned should be sufficient. 3339547Sandreas.hansson@arm.com */ 33410694SMarco.Balboni@ARM.com uint32_t payloadDelay; 3353218Sgblack@eecs.umich.edu 3365735Snate@binkert.org /** 3375735Snate@binkert.org * A virtual base opaque structure used to hold state associated 3389542Sandreas.hansson@arm.com * with the packet (e.g., an MSHR), specific to a MemObject that 3399542Sandreas.hansson@arm.com * sees the packet. A pointer to this state is returned in the 3409542Sandreas.hansson@arm.com * packet's response so that the MemObject in question can quickly 3419542Sandreas.hansson@arm.com * look up the state needed to process it. A specific subclass 3429542Sandreas.hansson@arm.com * would be derived from this to carry state specific to a 3439542Sandreas.hansson@arm.com * particular sending device. 3449542Sandreas.hansson@arm.com * 3459542Sandreas.hansson@arm.com * As multiple MemObjects may add their SenderState throughout the 3469542Sandreas.hansson@arm.com * memory system, the SenderStates create a stack, where a 3479542Sandreas.hansson@arm.com * MemObject can add a new Senderstate, as long as the 3489542Sandreas.hansson@arm.com * predecessing SenderState is restored when the response comes 3499542Sandreas.hansson@arm.com * back. For this reason, the predecessor should always be 3509542Sandreas.hansson@arm.com * populated with the current SenderState of a packet before 3519542Sandreas.hansson@arm.com * modifying the senderState field in the request packet. 3525735Snate@binkert.org */ 3535735Snate@binkert.org struct SenderState 3545735Snate@binkert.org { 3559542Sandreas.hansson@arm.com SenderState* predecessor; 3569542Sandreas.hansson@arm.com SenderState() : predecessor(NULL) {} 3572641Sstever@eecs.umich.edu virtual ~SenderState() {} 3582641Sstever@eecs.umich.edu }; 3592641Sstever@eecs.umich.edu 3605315Sstever@gmail.com /** 3615315Sstever@gmail.com * Object used to maintain state of a PrintReq. The senderState 3625315Sstever@gmail.com * field of a PrintReq should always be of this type. 3635315Sstever@gmail.com */ 3649044SAli.Saidi@ARM.com class PrintReqState : public SenderState 3655735Snate@binkert.org { 3665735Snate@binkert.org private: 3675735Snate@binkert.org /** 3685735Snate@binkert.org * An entry in the label stack. 3695735Snate@binkert.org */ 3705735Snate@binkert.org struct LabelStackEntry 3715735Snate@binkert.org { 3725314Sstever@gmail.com const std::string label; 3735314Sstever@gmail.com std::string *prefix; 3745314Sstever@gmail.com bool labelPrinted; 3755735Snate@binkert.org LabelStackEntry(const std::string &_label, std::string *_prefix); 3765314Sstever@gmail.com }; 3775314Sstever@gmail.com 3785314Sstever@gmail.com typedef std::list<LabelStackEntry> LabelStack; 3795314Sstever@gmail.com LabelStack labelStack; 3805314Sstever@gmail.com 3815314Sstever@gmail.com std::string *curPrefixPtr; 3825314Sstever@gmail.com 3835314Sstever@gmail.com public: 3845314Sstever@gmail.com std::ostream &os; 3855314Sstever@gmail.com const int verbosity; 3865314Sstever@gmail.com 3875314Sstever@gmail.com PrintReqState(std::ostream &os, int verbosity = 0); 3885314Sstever@gmail.com ~PrintReqState(); 3895314Sstever@gmail.com 3905735Snate@binkert.org /** 3915735Snate@binkert.org * Returns the current line prefix. 3925735Snate@binkert.org */ 3935314Sstever@gmail.com const std::string &curPrefix() { return *curPrefixPtr; } 3945315Sstever@gmail.com 3955735Snate@binkert.org /** 3965735Snate@binkert.org * Push a label onto the label stack, and prepend the given 3975315Sstever@gmail.com * prefix string onto the current prefix. Labels will only be 3985735Snate@binkert.org * printed if an object within the label's scope is printed. 3995735Snate@binkert.org */ 4005314Sstever@gmail.com void pushLabel(const std::string &lbl, 4015314Sstever@gmail.com const std::string &prefix = " "); 4025735Snate@binkert.org 4035735Snate@binkert.org /** 4045735Snate@binkert.org * Pop a label off the label stack. 4055735Snate@binkert.org */ 4065314Sstever@gmail.com void popLabel(); 4075735Snate@binkert.org 4085735Snate@binkert.org /** 4095735Snate@binkert.org * Print all of the pending unprinted labels on the 4105315Sstever@gmail.com * stack. Called by printObj(), so normally not called by 4115735Snate@binkert.org * users unless bypassing printObj(). 4125735Snate@binkert.org */ 4135314Sstever@gmail.com void printLabels(); 4145735Snate@binkert.org 4155735Snate@binkert.org /** 4165735Snate@binkert.org * Print a Printable object to os, because it matched the 4175735Snate@binkert.org * address on a PrintReq. 4185735Snate@binkert.org */ 4195314Sstever@gmail.com void printObj(Printable *obj); 4205314Sstever@gmail.com }; 4215314Sstever@gmail.com 4225735Snate@binkert.org /** 4235735Snate@binkert.org * This packet's sender state. Devices should use dynamic_cast<> 4245735Snate@binkert.org * to cast to the state appropriate to the sender. The intent of 4255735Snate@binkert.org * this variable is to allow a device to attach extra information 4269542Sandreas.hansson@arm.com * to a request. A response packet must return the sender state 4275735Snate@binkert.org * that was attached to the original request (even if a new packet 4285735Snate@binkert.org * is created). 4295735Snate@binkert.org */ 4302662Sstever@eecs.umich.edu SenderState *senderState; 4312641Sstever@eecs.umich.edu 4329542Sandreas.hansson@arm.com /** 4339542Sandreas.hansson@arm.com * Push a new sender state to the packet and make the current 4349542Sandreas.hansson@arm.com * sender state the predecessor of the new one. This should be 4359542Sandreas.hansson@arm.com * prefered over direct manipulation of the senderState member 4369542Sandreas.hansson@arm.com * variable. 4379542Sandreas.hansson@arm.com * 4389542Sandreas.hansson@arm.com * @param sender_state SenderState to push at the top of the stack 4399542Sandreas.hansson@arm.com */ 4409542Sandreas.hansson@arm.com void pushSenderState(SenderState *sender_state); 4419542Sandreas.hansson@arm.com 4429542Sandreas.hansson@arm.com /** 4439542Sandreas.hansson@arm.com * Pop the top of the state stack and return a pointer to it. This 4449542Sandreas.hansson@arm.com * assumes the current sender state is not NULL. This should be 4459542Sandreas.hansson@arm.com * preferred over direct manipulation of the senderState member 4469542Sandreas.hansson@arm.com * variable. 4479542Sandreas.hansson@arm.com * 4489542Sandreas.hansson@arm.com * @return The current top of the stack 4499542Sandreas.hansson@arm.com */ 4509542Sandreas.hansson@arm.com SenderState *popSenderState(); 4519542Sandreas.hansson@arm.com 4529543Ssascha.bischoff@arm.com /** 4539543Ssascha.bischoff@arm.com * Go through the sender state stack and return the first instance 4549543Ssascha.bischoff@arm.com * that is of type T (as determined by a dynamic_cast). If there 4559543Ssascha.bischoff@arm.com * is no sender state of type T, NULL is returned. 4569543Ssascha.bischoff@arm.com * 4579543Ssascha.bischoff@arm.com * @return The topmost state of type T 4589543Ssascha.bischoff@arm.com */ 4599543Ssascha.bischoff@arm.com template <typename T> 4609543Ssascha.bischoff@arm.com T * findNextSenderState() const 4619543Ssascha.bischoff@arm.com { 4629543Ssascha.bischoff@arm.com T *t = NULL; 4639543Ssascha.bischoff@arm.com SenderState* sender_state = senderState; 4649543Ssascha.bischoff@arm.com while (t == NULL && sender_state != NULL) { 4659543Ssascha.bischoff@arm.com t = dynamic_cast<T*>(sender_state); 4669543Ssascha.bischoff@arm.com sender_state = sender_state->predecessor; 4679543Ssascha.bischoff@arm.com } 4689543Ssascha.bischoff@arm.com return t; 4699543Ssascha.bischoff@arm.com } 4709543Ssascha.bischoff@arm.com 4715735Snate@binkert.org /// Return the string name of the cmd field (for debugging and 4725735Snate@binkert.org /// tracing). 4734022Sstever@eecs.umich.edu const std::string &cmdString() const { return cmd.toString(); } 4742811Srdreslin@umich.edu 4755735Snate@binkert.org /// Return the index of this command. 4764022Sstever@eecs.umich.edu inline int cmdToIndex() const { return cmd.toInt(); } 4772811Srdreslin@umich.edu 47810583SCurtis.Dunham@arm.com bool isRead() const { return cmd.isRead(); } 47910583SCurtis.Dunham@arm.com bool isWrite() const { return cmd.isWrite(); } 48010583SCurtis.Dunham@arm.com bool isUpgrade() const { return cmd.isUpgrade(); } 48110583SCurtis.Dunham@arm.com bool isRequest() const { return cmd.isRequest(); } 48210583SCurtis.Dunham@arm.com bool isResponse() const { return cmd.isResponse(); } 48310583SCurtis.Dunham@arm.com bool needsExclusive() const { return cmd.needsExclusive(); } 48410583SCurtis.Dunham@arm.com bool needsResponse() const { return cmd.needsResponse(); } 48510583SCurtis.Dunham@arm.com bool isInvalidate() const { return cmd.isInvalidate(); } 48610583SCurtis.Dunham@arm.com bool isWriteInvalidate() const { return cmd.isWriteInvalidate(); } 48710583SCurtis.Dunham@arm.com bool hasData() const { return cmd.hasData(); } 48810583SCurtis.Dunham@arm.com bool isLLSC() const { return cmd.isLLSC(); } 48910583SCurtis.Dunham@arm.com bool isError() const { return cmd.isError(); } 49010583SCurtis.Dunham@arm.com bool isPrint() const { return cmd.isPrint(); } 49110583SCurtis.Dunham@arm.com bool isFlush() const { return cmd.isFlush(); } 4922812Srdreslin@umich.edu 4934870Sstever@eecs.umich.edu // Snoop flags 49410567Sandreas.hansson@arm.com void assertMemInhibit() 49510567Sandreas.hansson@arm.com { 49610567Sandreas.hansson@arm.com assert(isRequest()); 49710567Sandreas.hansson@arm.com assert(!flags.isSet(MEM_INHIBIT)); 49810567Sandreas.hansson@arm.com flags.set(MEM_INHIBIT); 49910567Sandreas.hansson@arm.com } 5009951Sstephan.diestelhorst@arm.com bool memInhibitAsserted() const { return flags.isSet(MEM_INHIBIT); } 5019951Sstephan.diestelhorst@arm.com void assertShared() { flags.set(SHARED); } 5029951Sstephan.diestelhorst@arm.com bool sharedAsserted() const { return flags.isSet(SHARED); } 5034870Sstever@eecs.umich.edu 5044895Sstever@eecs.umich.edu // Special control flags 5059951Sstephan.diestelhorst@arm.com void setExpressSnoop() { flags.set(EXPRESS_SNOOP); } 5069951Sstephan.diestelhorst@arm.com bool isExpressSnoop() const { return flags.isSet(EXPRESS_SNOOP); } 5079951Sstephan.diestelhorst@arm.com void setSupplyExclusive() { flags.set(SUPPLY_EXCLUSIVE); } 5089951Sstephan.diestelhorst@arm.com void clearSupplyExclusive() { flags.clear(SUPPLY_EXCLUSIVE); } 5099951Sstephan.diestelhorst@arm.com bool isSupplyExclusive() const { return flags.isSet(SUPPLY_EXCLUSIVE); } 5109951Sstephan.diestelhorst@arm.com void setSuppressFuncError() { flags.set(SUPPRESS_FUNC_ERROR); } 5119951Sstephan.diestelhorst@arm.com bool suppressFuncError() const { return flags.isSet(SUPPRESS_FUNC_ERROR); } 51210763Sali.jafri@arm.com void setBlockCached() { flags.set(BLOCK_CACHED); } 51310763Sali.jafri@arm.com bool isBlockCached() const { return flags.isSet(BLOCK_CACHED); } 51410883Sali.jafri@arm.com void clearBlockCached() { flags.clear(BLOCK_CACHED); } 5154895Sstever@eecs.umich.edu 5164870Sstever@eecs.umich.edu // Network error conditions... encapsulate them as methods since 5174870Sstever@eecs.umich.edu // their encoding keeps changing (from result field to command 5184870Sstever@eecs.umich.edu // field, etc.) 5195735Snate@binkert.org void 5205735Snate@binkert.org setBadAddress() 5215735Snate@binkert.org { 5225735Snate@binkert.org assert(isResponse()); 5235735Snate@binkert.org cmd = MemCmd::BadAddressError; 5245735Snate@binkert.org } 5255735Snate@binkert.org 5265735Snate@binkert.org bool hadBadAddress() const { return cmd == MemCmd::BadAddressError; } 5274986Ssaidi@eecs.umich.edu void copyError(Packet *pkt) { assert(pkt->isError()); cmd = pkt->cmd; } 5282814Srdreslin@umich.edu 5295764Snate@binkert.org Addr getAddr() const { assert(flags.isSet(VALID_ADDR)); return addr; } 5309259SAli.Saidi@ARM.com /** 5319259SAli.Saidi@ARM.com * Update the address of this packet mid-transaction. This is used 5329259SAli.Saidi@ARM.com * by the address mapper to change an already set address to a new 5339259SAli.Saidi@ARM.com * one based on the system configuration. It is intended to remap 5349259SAli.Saidi@ARM.com * an existing address, so it asserts that the current address is 5359259SAli.Saidi@ARM.com * valid. 5369259SAli.Saidi@ARM.com */ 5379259SAli.Saidi@ARM.com void setAddr(Addr _addr) { assert(flags.isSet(VALID_ADDR)); addr = _addr; } 5389259SAli.Saidi@ARM.com 5396227Snate@binkert.org unsigned getSize() const { assert(flags.isSet(VALID_SIZE)); return size; } 5405735Snate@binkert.org Addr getOffset(int blkSize) const { return getAddr() & (Addr)(blkSize - 1); } 5412549SN/A 54210028SGiacomo.Gabrielli@arm.com bool isSecure() const 54310028SGiacomo.Gabrielli@arm.com { 54410028SGiacomo.Gabrielli@arm.com assert(flags.isSet(VALID_ADDR)); 54510028SGiacomo.Gabrielli@arm.com return _isSecure; 54610028SGiacomo.Gabrielli@arm.com } 54710028SGiacomo.Gabrielli@arm.com 5485735Snate@binkert.org /** 5497550SBrad.Beckmann@amd.com * It has been determined that the SC packet should successfully update 5507550SBrad.Beckmann@amd.com * memory. Therefore, convert this SC packet to a normal write. 5517550SBrad.Beckmann@amd.com */ 5527550SBrad.Beckmann@amd.com void 5537550SBrad.Beckmann@amd.com convertScToWrite() 5547550SBrad.Beckmann@amd.com { 5557550SBrad.Beckmann@amd.com assert(isLLSC()); 5567550SBrad.Beckmann@amd.com assert(isWrite()); 5577550SBrad.Beckmann@amd.com cmd = MemCmd::WriteReq; 5587550SBrad.Beckmann@amd.com } 5597550SBrad.Beckmann@amd.com 5607550SBrad.Beckmann@amd.com /** 5617550SBrad.Beckmann@amd.com * When ruby is in use, Ruby will monitor the cache line and thus M5 5627550SBrad.Beckmann@amd.com * phys memory should treat LL ops as normal reads. 5637550SBrad.Beckmann@amd.com */ 5647550SBrad.Beckmann@amd.com void 5657550SBrad.Beckmann@amd.com convertLlToRead() 5667550SBrad.Beckmann@amd.com { 5677550SBrad.Beckmann@amd.com assert(isLLSC()); 5687550SBrad.Beckmann@amd.com assert(isRead()); 5697550SBrad.Beckmann@amd.com cmd = MemCmd::ReadReq; 5707550SBrad.Beckmann@amd.com } 5717550SBrad.Beckmann@amd.com 5727550SBrad.Beckmann@amd.com /** 5735735Snate@binkert.org * Constructor. Note that a Request object must be constructed 5745735Snate@binkert.org * first, but the Requests's physical address and size fields need 5759030Sandreas.hansson@arm.com * not be valid. The command must be supplied. 5765735Snate@binkert.org */ 57710569Sandreas.hansson@arm.com Packet(const RequestPtr _req, MemCmd _cmd) 57810360Sandreas.hansson@arm.com : cmd(_cmd), req(_req), data(nullptr), addr(0), _isSecure(false), 57910723Sandreas.hansson@arm.com size(0), headerDelay(0), payloadDelay(0), 5809546Sandreas.hansson@arm.com senderState(NULL) 5812641Sstever@eecs.umich.edu { 5826104Ssteve.reinhardt@amd.com if (req->hasPaddr()) { 5836104Ssteve.reinhardt@amd.com addr = req->getPaddr(); 5846104Ssteve.reinhardt@amd.com flags.set(VALID_ADDR); 58510028SGiacomo.Gabrielli@arm.com _isSecure = req->isSecure(); 5866104Ssteve.reinhardt@amd.com } 5876104Ssteve.reinhardt@amd.com if (req->hasSize()) { 5886104Ssteve.reinhardt@amd.com size = req->getSize(); 5896104Ssteve.reinhardt@amd.com flags.set(VALID_SIZE); 5906104Ssteve.reinhardt@amd.com } 5912813Srdreslin@umich.edu } 5922813Srdreslin@umich.edu 5935735Snate@binkert.org /** 5945735Snate@binkert.org * Alternate constructor if you are trying to create a packet with 5955735Snate@binkert.org * a request that is for a whole block, not the address from the 5965735Snate@binkert.org * req. this allows for overriding the size/addr of the req. 5975735Snate@binkert.org */ 59810569Sandreas.hansson@arm.com Packet(const RequestPtr _req, MemCmd _cmd, int _blkSize) 59910360Sandreas.hansson@arm.com : cmd(_cmd), req(_req), data(nullptr), addr(0), _isSecure(false), 60010694SMarco.Balboni@ARM.com headerDelay(0), payloadDelay(0), 6019546Sandreas.hansson@arm.com senderState(NULL) 6022813Srdreslin@umich.edu { 6036104Ssteve.reinhardt@amd.com if (req->hasPaddr()) { 6046104Ssteve.reinhardt@amd.com addr = req->getPaddr() & ~(_blkSize - 1); 6056104Ssteve.reinhardt@amd.com flags.set(VALID_ADDR); 60610028SGiacomo.Gabrielli@arm.com _isSecure = req->isSecure(); 6076104Ssteve.reinhardt@amd.com } 6086104Ssteve.reinhardt@amd.com size = _blkSize; 6096104Ssteve.reinhardt@amd.com flags.set(VALID_SIZE); 6104626Sstever@eecs.umich.edu } 6114626Sstever@eecs.umich.edu 6125735Snate@binkert.org /** 6135735Snate@binkert.org * Alternate constructor for copying a packet. Copy all fields 6144887Sstever@eecs.umich.edu * *except* if the original packet's data was dynamic, don't copy 6154887Sstever@eecs.umich.edu * that, as we can't guarantee that the new packet's lifetime is 6164887Sstever@eecs.umich.edu * less than that of the original packet. In this case the new 6175735Snate@binkert.org * packet should allocate its own data. 6185735Snate@binkert.org */ 61910571Sandreas.hansson@arm.com Packet(PacketPtr pkt, bool clear_flags, bool alloc_data) 6205735Snate@binkert.org : cmd(pkt->cmd), req(pkt->req), 62110571Sandreas.hansson@arm.com data(nullptr), 62210028SGiacomo.Gabrielli@arm.com addr(pkt->addr), _isSecure(pkt->_isSecure), size(pkt->size), 62310723Sandreas.hansson@arm.com bytesValid(pkt->bytesValid), 62410694SMarco.Balboni@ARM.com headerDelay(pkt->headerDelay), 62510694SMarco.Balboni@ARM.com payloadDelay(pkt->payloadDelay), 6269546Sandreas.hansson@arm.com senderState(pkt->senderState) 6274626Sstever@eecs.umich.edu { 62810571Sandreas.hansson@arm.com if (!clear_flags) 6295735Snate@binkert.org flags.set(pkt->flags & COPY_FLAGS); 6305735Snate@binkert.org 6319031Sandreas.hansson@arm.com flags.set(pkt->flags & (VALID_ADDR|VALID_SIZE)); 63210565Sandreas.hansson@arm.com 63310571Sandreas.hansson@arm.com // should we allocate space for data, or not, the express 63410571Sandreas.hansson@arm.com // snoops do not need to carry any data as they only serve to 63510571Sandreas.hansson@arm.com // co-ordinate state changes 63610571Sandreas.hansson@arm.com if (alloc_data) { 63710571Sandreas.hansson@arm.com // even if asked to allocate data, if the original packet 63810571Sandreas.hansson@arm.com // holds static data, then the sender will not be doing 63910571Sandreas.hansson@arm.com // any memcpy on receiving the response, thus we simply 64010571Sandreas.hansson@arm.com // carry the pointer forward 64110571Sandreas.hansson@arm.com if (pkt->flags.isSet(STATIC_DATA)) { 64210571Sandreas.hansson@arm.com data = pkt->data; 64310571Sandreas.hansson@arm.com flags.set(STATIC_DATA); 64410571Sandreas.hansson@arm.com } else { 64510571Sandreas.hansson@arm.com allocate(); 64610571Sandreas.hansson@arm.com } 64710571Sandreas.hansson@arm.com } 64810342SCurtis.Dunham@arm.com } 6498668Sgeoffrey.blake@arm.com 65010342SCurtis.Dunham@arm.com /** 65110739Ssteve.reinhardt@amd.com * Generate the appropriate read MemCmd based on the Request flags. 65210342SCurtis.Dunham@arm.com */ 65310739Ssteve.reinhardt@amd.com static MemCmd 65410739Ssteve.reinhardt@amd.com makeReadCmd(const RequestPtr req) 65510342SCurtis.Dunham@arm.com { 65610739Ssteve.reinhardt@amd.com if (req->isLLSC()) 65710739Ssteve.reinhardt@amd.com return MemCmd::LoadLockedReq; 65810739Ssteve.reinhardt@amd.com else if (req->isPrefetch()) 65910739Ssteve.reinhardt@amd.com return MemCmd::SoftPFReq; 66010739Ssteve.reinhardt@amd.com else 66110739Ssteve.reinhardt@amd.com return MemCmd::ReadReq; 66210739Ssteve.reinhardt@amd.com } 66310739Ssteve.reinhardt@amd.com 66410739Ssteve.reinhardt@amd.com /** 66510739Ssteve.reinhardt@amd.com * Generate the appropriate write MemCmd based on the Request flags. 66610739Ssteve.reinhardt@amd.com */ 66710739Ssteve.reinhardt@amd.com static MemCmd 66810739Ssteve.reinhardt@amd.com makeWriteCmd(const RequestPtr req) 66910739Ssteve.reinhardt@amd.com { 67010739Ssteve.reinhardt@amd.com if (req->isLLSC()) 67110739Ssteve.reinhardt@amd.com return MemCmd::StoreCondReq; 67210739Ssteve.reinhardt@amd.com else if (req->isSwap()) 67310739Ssteve.reinhardt@amd.com return MemCmd::SwapReq; 67410739Ssteve.reinhardt@amd.com else 67510739Ssteve.reinhardt@amd.com return MemCmd::WriteReq; 67610342SCurtis.Dunham@arm.com } 67710342SCurtis.Dunham@arm.com 67810342SCurtis.Dunham@arm.com /** 67910342SCurtis.Dunham@arm.com * Constructor-like methods that return Packets based on Request objects. 68010739Ssteve.reinhardt@amd.com * Fine-tune the MemCmd type if it's not a vanilla read or write. 68110342SCurtis.Dunham@arm.com */ 68210342SCurtis.Dunham@arm.com static PacketPtr 68310569Sandreas.hansson@arm.com createRead(const RequestPtr req) 68410342SCurtis.Dunham@arm.com { 68510739Ssteve.reinhardt@amd.com return new Packet(req, makeReadCmd(req)); 68610342SCurtis.Dunham@arm.com } 68710342SCurtis.Dunham@arm.com 68810342SCurtis.Dunham@arm.com static PacketPtr 68910569Sandreas.hansson@arm.com createWrite(const RequestPtr req) 69010342SCurtis.Dunham@arm.com { 69110739Ssteve.reinhardt@amd.com return new Packet(req, makeWriteCmd(req)); 6922641Sstever@eecs.umich.edu } 6932549SN/A 6945735Snate@binkert.org /** 6955735Snate@binkert.org * clean up packet variables 6965735Snate@binkert.org */ 6972566SN/A ~Packet() 6985387Sstever@gmail.com { 69910872Sali.jafri@arm.com // Delete the request object if this is a request packet which 70010872Sali.jafri@arm.com // does not need a response, because the requester will not get 70110872Sali.jafri@arm.com // a chance. If the request packet needs a response then the 70210872Sali.jafri@arm.com // request will be deleted on receipt of the response 70310872Sali.jafri@arm.com // packet. We also make sure to never delete the request for 70410872Sali.jafri@arm.com // express snoops, even for cases when responses are not 70510872Sali.jafri@arm.com // needed (CleanEvict and Writeback), since the snoop packet 70610872Sali.jafri@arm.com // re-uses the same request. 70710872Sali.jafri@arm.com if (req && isRequest() && !needsResponse() && 70810872Sali.jafri@arm.com !isExpressSnoop()) { 7095387Sstever@gmail.com delete req; 71010872Sali.jafri@arm.com } 7115735Snate@binkert.org deleteData(); 7125387Sstever@gmail.com } 7132566SN/A 7145735Snate@binkert.org /** 7154626Sstever@eecs.umich.edu * Take a request packet and modify it in place to be suitable for 71610660Sandreas.hansson@arm.com * returning as a response to that request. 7174626Sstever@eecs.umich.edu */ 7185735Snate@binkert.org void 7195735Snate@binkert.org makeResponse() 7204626Sstever@eecs.umich.edu { 7212662Sstever@eecs.umich.edu assert(needsResponse()); 7222855Srdreslin@umich.edu assert(isRequest()); 7234986Ssaidi@eecs.umich.edu origCmd = cmd; 7244022Sstever@eecs.umich.edu cmd = cmd.responseCommand(); 7255745Snate@binkert.org 7267464Ssteve.reinhardt@amd.com // responses are never express, even if the snoop that 7277464Ssteve.reinhardt@amd.com // triggered them was 7287464Ssteve.reinhardt@amd.com flags.clear(EXPRESS_SNOOP); 7292641Sstever@eecs.umich.edu } 7302641Sstever@eecs.umich.edu 7315735Snate@binkert.org void 7325735Snate@binkert.org makeAtomicResponse() 7334870Sstever@eecs.umich.edu { 7344870Sstever@eecs.umich.edu makeResponse(); 7354870Sstever@eecs.umich.edu } 7364870Sstever@eecs.umich.edu 7375735Snate@binkert.org void 7385735Snate@binkert.org makeTimingResponse() 7393348Sbinkertn@umich.edu { 7404870Sstever@eecs.umich.edu makeResponse(); 7413135Srdreslin@umich.edu } 7423135Srdreslin@umich.edu 7438436SBrad.Beckmann@amd.com void 7448436SBrad.Beckmann@amd.com setFunctionalResponseStatus(bool success) 7458436SBrad.Beckmann@amd.com { 7468436SBrad.Beckmann@amd.com if (!success) { 7478436SBrad.Beckmann@amd.com if (isWrite()) { 7488436SBrad.Beckmann@amd.com cmd = MemCmd::FunctionalWriteError; 7498436SBrad.Beckmann@amd.com } else { 7508436SBrad.Beckmann@amd.com cmd = MemCmd::FunctionalReadError; 7518436SBrad.Beckmann@amd.com } 7528436SBrad.Beckmann@amd.com } 7538436SBrad.Beckmann@amd.com } 7548436SBrad.Beckmann@amd.com 7557006Snate@binkert.org void 7567006Snate@binkert.org setSize(unsigned size) 7577006Snate@binkert.org { 7587006Snate@binkert.org assert(!flags.isSet(VALID_SIZE)); 7597006Snate@binkert.org 7607006Snate@binkert.org this->size = size; 7617006Snate@binkert.org flags.set(VALID_SIZE); 7627006Snate@binkert.org } 7637006Snate@binkert.org 7642685Ssaidi@eecs.umich.edu 7653348Sbinkertn@umich.edu /** 7663348Sbinkertn@umich.edu * Set the data pointer to the following value that should not be 76710571Sandreas.hansson@arm.com * freed. Static data allows us to do a single memcpy even if 76810571Sandreas.hansson@arm.com * multiple packets are required to get from source to destination 76910571Sandreas.hansson@arm.com * and back. In essence the pointer is set calling dataStatic on 77010571Sandreas.hansson@arm.com * the original packet, and whenever this packet is copied and 77110571Sandreas.hansson@arm.com * forwarded the same pointer is passed on. When a packet 77210571Sandreas.hansson@arm.com * eventually reaches the destination holding the data, it is 77310571Sandreas.hansson@arm.com * copied once into the location originally set. On the way back 77410571Sandreas.hansson@arm.com * to the source, no copies are necessary. 7752566SN/A */ 7762566SN/A template <typename T> 7773348Sbinkertn@umich.edu void 7783348Sbinkertn@umich.edu dataStatic(T *p) 7793348Sbinkertn@umich.edu { 78010566Sandreas.hansson@arm.com assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA)); 7813348Sbinkertn@umich.edu data = (PacketDataPtr)p; 7825735Snate@binkert.org flags.set(STATIC_DATA); 7833348Sbinkertn@umich.edu } 7842566SN/A 7853348Sbinkertn@umich.edu /** 78610564Sandreas.hansson@arm.com * Set the data pointer to the following value that should not be 78710564Sandreas.hansson@arm.com * freed. This version of the function allows the pointer passed 78810564Sandreas.hansson@arm.com * to us to be const. To avoid issues down the line we cast the 78910564Sandreas.hansson@arm.com * constness away, the alternative would be to keep both a const 79010564Sandreas.hansson@arm.com * and non-const data pointer and cleverly choose between 79110564Sandreas.hansson@arm.com * them. Note that this is only allowed for static data. 79210564Sandreas.hansson@arm.com */ 79310564Sandreas.hansson@arm.com template <typename T> 79410564Sandreas.hansson@arm.com void 79510564Sandreas.hansson@arm.com dataStaticConst(const T *p) 79610564Sandreas.hansson@arm.com { 79710566Sandreas.hansson@arm.com assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA)); 79810564Sandreas.hansson@arm.com data = const_cast<PacketDataPtr>(p); 79910564Sandreas.hansson@arm.com flags.set(STATIC_DATA); 80010564Sandreas.hansson@arm.com } 80110564Sandreas.hansson@arm.com 80210564Sandreas.hansson@arm.com /** 8033348Sbinkertn@umich.edu * Set the data pointer to a value that should have delete [] 80410571Sandreas.hansson@arm.com * called on it. Dynamic data is local to this packet, and as the 80510571Sandreas.hansson@arm.com * packet travels from source to destination, forwarded packets 80610571Sandreas.hansson@arm.com * will allocate their own data. When a packet reaches the final 80710571Sandreas.hansson@arm.com * destination it will populate the dynamic data of that specific 80810571Sandreas.hansson@arm.com * packet, and on the way back towards the source, memcpy will be 80910571Sandreas.hansson@arm.com * invoked in every step where a new packet was created e.g. in 81010571Sandreas.hansson@arm.com * the caches. Ultimately when the response reaches the source a 81110571Sandreas.hansson@arm.com * final memcpy is needed to extract the data from the packet 81210571Sandreas.hansson@arm.com * before it is deallocated. 8133348Sbinkertn@umich.edu */ 8142566SN/A template <typename T> 8153348Sbinkertn@umich.edu void 8163348Sbinkertn@umich.edu dataDynamic(T *p) 8173348Sbinkertn@umich.edu { 81810566Sandreas.hansson@arm.com assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA)); 8193348Sbinkertn@umich.edu data = (PacketDataPtr)p; 8205735Snate@binkert.org flags.set(DYNAMIC_DATA); 8213348Sbinkertn@umich.edu } 8223348Sbinkertn@umich.edu 8235735Snate@binkert.org /** 8245735Snate@binkert.org * get a pointer to the data ptr. 8255735Snate@binkert.org */ 8263348Sbinkertn@umich.edu template <typename T> 8273348Sbinkertn@umich.edu T* 82810562Sandreas.hansson@arm.com getPtr() 8293348Sbinkertn@umich.edu { 83010562Sandreas.hansson@arm.com assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA)); 8313348Sbinkertn@umich.edu return (T*)data; 8323348Sbinkertn@umich.edu } 8332566SN/A 83410563Sandreas.hansson@arm.com template <typename T> 83510563Sandreas.hansson@arm.com const T* 83610563Sandreas.hansson@arm.com getConstPtr() const 83710563Sandreas.hansson@arm.com { 83810563Sandreas.hansson@arm.com assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA)); 83910563Sandreas.hansson@arm.com return (const T*)data; 84010563Sandreas.hansson@arm.com } 84110563Sandreas.hansson@arm.com 8425735Snate@binkert.org /** 8435735Snate@binkert.org * return the value of what is pointed to in the packet. 8445735Snate@binkert.org */ 8452566SN/A template <typename T> 84610563Sandreas.hansson@arm.com T get() const; 8472566SN/A 8485735Snate@binkert.org /** 8495735Snate@binkert.org * set the value in the data pointer to v. 8505735Snate@binkert.org */ 8512566SN/A template <typename T> 8522592SN/A void set(T v); 8532566SN/A 8543348Sbinkertn@umich.edu /** 8554626Sstever@eecs.umich.edu * Copy data into the packet from the provided pointer. 8564626Sstever@eecs.umich.edu */ 8575735Snate@binkert.org void 85810563Sandreas.hansson@arm.com setData(const uint8_t *p) 8594626Sstever@eecs.umich.edu { 86010571Sandreas.hansson@arm.com // we should never be copying data onto itself, which means we 86110571Sandreas.hansson@arm.com // must idenfity packets with static data, as they carry the 86210571Sandreas.hansson@arm.com // same pointer from source to destination and back 86310571Sandreas.hansson@arm.com assert(p != getPtr<uint8_t>() || flags.isSet(STATIC_DATA)); 86410571Sandreas.hansson@arm.com 8657691SAli.Saidi@ARM.com if (p != getPtr<uint8_t>()) 86610571Sandreas.hansson@arm.com // for packet with allocated dynamic data, we copy data from 86710571Sandreas.hansson@arm.com // one to the other, e.g. a forwarded response to a response 8687691SAli.Saidi@ARM.com std::memcpy(getPtr<uint8_t>(), p, getSize()); 8694626Sstever@eecs.umich.edu } 8704626Sstever@eecs.umich.edu 8714626Sstever@eecs.umich.edu /** 8724626Sstever@eecs.umich.edu * Copy data into the packet from the provided block pointer, 8734626Sstever@eecs.umich.edu * which is aligned to the given block size. 8744626Sstever@eecs.umich.edu */ 8755735Snate@binkert.org void 87610563Sandreas.hansson@arm.com setDataFromBlock(const uint8_t *blk_data, int blkSize) 8774626Sstever@eecs.umich.edu { 8784626Sstever@eecs.umich.edu setData(blk_data + getOffset(blkSize)); 8794626Sstever@eecs.umich.edu } 8804626Sstever@eecs.umich.edu 8814626Sstever@eecs.umich.edu /** 8824626Sstever@eecs.umich.edu * Copy data from the packet to the provided block pointer, which 8834626Sstever@eecs.umich.edu * is aligned to the given block size. 8844626Sstever@eecs.umich.edu */ 8855735Snate@binkert.org void 88610563Sandreas.hansson@arm.com writeData(uint8_t *p) const 8874626Sstever@eecs.umich.edu { 88810563Sandreas.hansson@arm.com std::memcpy(p, getConstPtr<uint8_t>(), getSize()); 8894626Sstever@eecs.umich.edu } 8904626Sstever@eecs.umich.edu 8914626Sstever@eecs.umich.edu /** 8924626Sstever@eecs.umich.edu * Copy data from the packet to the memory at the provided pointer. 8934626Sstever@eecs.umich.edu */ 8945735Snate@binkert.org void 89510563Sandreas.hansson@arm.com writeDataToBlock(uint8_t *blk_data, int blkSize) const 8964626Sstever@eecs.umich.edu { 8974626Sstever@eecs.umich.edu writeData(blk_data + getOffset(blkSize)); 8984626Sstever@eecs.umich.edu } 8994626Sstever@eecs.umich.edu 9004626Sstever@eecs.umich.edu /** 9013348Sbinkertn@umich.edu * delete the data pointed to in the data pointer. Ok to call to 9023348Sbinkertn@umich.edu * matter how data was allocted. 9033348Sbinkertn@umich.edu */ 9045735Snate@binkert.org void 9055735Snate@binkert.org deleteData() 9065735Snate@binkert.org { 90710566Sandreas.hansson@arm.com if (flags.isSet(DYNAMIC_DATA)) 9085735Snate@binkert.org delete [] data; 9095735Snate@binkert.org 91010566Sandreas.hansson@arm.com flags.clear(STATIC_DATA|DYNAMIC_DATA); 9115735Snate@binkert.org data = NULL; 9125735Snate@binkert.org } 9132566SN/A 91410565Sandreas.hansson@arm.com /** Allocate memory for the packet. */ 9155735Snate@binkert.org void 9165735Snate@binkert.org allocate() 9175735Snate@binkert.org { 9185764Snate@binkert.org assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA)); 91910566Sandreas.hansson@arm.com flags.set(DYNAMIC_DATA); 9205745Snate@binkert.org data = new uint8_t[getSize()]; 9215735Snate@binkert.org } 9225735Snate@binkert.org 9234626Sstever@eecs.umich.edu /** 92410570Sandreas.hansson@arm.com * Check a functional request against a memory value stored in 92510570Sandreas.hansson@arm.com * another packet (i.e. an in-transit request or 92610570Sandreas.hansson@arm.com * response). Returns true if the current packet is a read, and 92710570Sandreas.hansson@arm.com * the other packet provides the data, which is then copied to the 92810570Sandreas.hansson@arm.com * current packet. If the current packet is a write, and the other 92910570Sandreas.hansson@arm.com * packet intersects this one, then we update the data 93010570Sandreas.hansson@arm.com * accordingly. 93110570Sandreas.hansson@arm.com */ 93210570Sandreas.hansson@arm.com bool 93310570Sandreas.hansson@arm.com checkFunctional(PacketPtr other) 93410570Sandreas.hansson@arm.com { 93510570Sandreas.hansson@arm.com // all packets that are carrying a payload should have a valid 93610570Sandreas.hansson@arm.com // data pointer 93710570Sandreas.hansson@arm.com return checkFunctional(other, other->getAddr(), other->isSecure(), 93810570Sandreas.hansson@arm.com other->getSize(), 93910570Sandreas.hansson@arm.com other->hasData() ? 94010570Sandreas.hansson@arm.com other->getPtr<uint8_t>() : NULL); 94110570Sandreas.hansson@arm.com } 94210570Sandreas.hansson@arm.com 94310570Sandreas.hansson@arm.com /** 94410883Sali.jafri@arm.com * Is this request notification of a clean or dirty eviction from the cache. 94510883Sali.jafri@arm.com **/ 94610883Sali.jafri@arm.com bool 94710883Sali.jafri@arm.com evictingBlock() const 94810883Sali.jafri@arm.com { 94910883Sali.jafri@arm.com return (cmd == MemCmd::Writeback || 95010883Sali.jafri@arm.com cmd == MemCmd::CleanEvict); 95110883Sali.jafri@arm.com } 95210883Sali.jafri@arm.com 95310883Sali.jafri@arm.com /** 95410883Sali.jafri@arm.com * Does the request need to check for cached copies of the same block 95510883Sali.jafri@arm.com * in the memory hierarchy above. 95610883Sali.jafri@arm.com **/ 95710883Sali.jafri@arm.com bool 95810883Sali.jafri@arm.com mustCheckAbove() const 95910883Sali.jafri@arm.com { 96010883Sali.jafri@arm.com return (cmd == MemCmd::HardPFReq || 96110883Sali.jafri@arm.com evictingBlock()); 96210883Sali.jafri@arm.com } 96310883Sali.jafri@arm.com 96410883Sali.jafri@arm.com /** 9654626Sstever@eecs.umich.edu * Check a functional request against a memory value represented 96610570Sandreas.hansson@arm.com * by a base/size pair and an associated data array. If the 96710570Sandreas.hansson@arm.com * current packet is a read, it may be satisfied by the memory 96810570Sandreas.hansson@arm.com * value. If the current packet is a write, it may update the 9694626Sstever@eecs.umich.edu * memory value. 9704626Sstever@eecs.umich.edu */ 9715735Snate@binkert.org bool 97210570Sandreas.hansson@arm.com checkFunctional(Printable *obj, Addr base, bool is_secure, int size, 97310570Sandreas.hansson@arm.com uint8_t *_data); 9745314Sstever@gmail.com 9755315Sstever@gmail.com /** 9765315Sstever@gmail.com * Push label for PrintReq (safe to call unconditionally). 9775315Sstever@gmail.com */ 9785735Snate@binkert.org void 9795735Snate@binkert.org pushLabel(const std::string &lbl) 9805735Snate@binkert.org { 9815735Snate@binkert.org if (isPrint()) 9825735Snate@binkert.org safe_cast<PrintReqState*>(senderState)->pushLabel(lbl); 9835314Sstever@gmail.com } 9845314Sstever@gmail.com 9855315Sstever@gmail.com /** 9865315Sstever@gmail.com * Pop label for PrintReq (safe to call unconditionally). 9875315Sstever@gmail.com */ 9885735Snate@binkert.org void 9895735Snate@binkert.org popLabel() 9905735Snate@binkert.org { 9915735Snate@binkert.org if (isPrint()) 9925735Snate@binkert.org safe_cast<PrintReqState*>(senderState)->popLabel(); 9935314Sstever@gmail.com } 9945314Sstever@gmail.com 9955314Sstever@gmail.com void print(std::ostream &o, int verbosity = 0, 9965314Sstever@gmail.com const std::string &prefix = "") const; 9979663Suri.wiener@arm.com 9989663Suri.wiener@arm.com /** 9999663Suri.wiener@arm.com * A no-args wrapper of print(std::ostream...) 10009663Suri.wiener@arm.com * meant to be invoked from DPRINTFs 10019663Suri.wiener@arm.com * avoiding string overheads in fast mode 10029663Suri.wiener@arm.com * @return string with the request's type and start<->end addresses 10039663Suri.wiener@arm.com */ 10049663Suri.wiener@arm.com std::string print() const; 10052381SN/A}; 10062381SN/A 10072381SN/A#endif //__MEM_PACKET_HH 1008