packet.hh revision 10192
12381SN/A/* 29542Sandreas.hansson@arm.com * Copyright (c) 2012-2013 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, 904022Sstever@eecs.umich.edu SoftPFReq, 914022Sstever@eecs.umich.edu HardPFReq, 924022Sstever@eecs.umich.edu SoftPFResp, 934022Sstever@eecs.umich.edu HardPFResp, 949018Sandreas.hansson@arm.com // WriteInvalidateReq transactions used to be generated by the 959018Sandreas.hansson@arm.com // DMA ports when writing full blocks to memory, however, it 969018Sandreas.hansson@arm.com // is not used anymore since we put the I/O cache in place to 979018Sandreas.hansson@arm.com // deal with partial block writes. Hence, WriteInvalidateReq 989018Sandreas.hansson@arm.com // and WriteInvalidateResp are currently unused. The 999018Sandreas.hansson@arm.com // implication is that the I/O cache does read-exclusive 1009018Sandreas.hansson@arm.com // operations on every full-cache-block DMA, and ultimately 1019018Sandreas.hansson@arm.com // this needs to be fixed. 1024022Sstever@eecs.umich.edu WriteInvalidateReq, 1034022Sstever@eecs.umich.edu WriteInvalidateResp, 1044022Sstever@eecs.umich.edu UpgradeReq, 1057465Ssteve.reinhardt@amd.com SCUpgradeReq, // Special "weak" upgrade for StoreCond 1064628Sstever@eecs.umich.edu UpgradeResp, 1077465Ssteve.reinhardt@amd.com SCUpgradeFailReq, // Failed SCUpgradeReq in MSHR (never sent) 1087465Ssteve.reinhardt@amd.com UpgradeFailResp, // Valid for SCUpgradeReq only 1094022Sstever@eecs.umich.edu ReadExReq, 1104022Sstever@eecs.umich.edu ReadExResp, 1114626Sstever@eecs.umich.edu LoadLockedReq, 1124626Sstever@eecs.umich.edu StoreCondReq, 1137669Ssteve.reinhardt@amd.com StoreCondFailReq, // Failed StoreCondReq in MSHR (never sent) 1144626Sstever@eecs.umich.edu StoreCondResp, 1154040Ssaidi@eecs.umich.edu SwapReq, 1164040Ssaidi@eecs.umich.edu SwapResp, 1175650Sgblack@eecs.umich.edu MessageReq, 1185650Sgblack@eecs.umich.edu MessageResp, 1194870Sstever@eecs.umich.edu // Error responses 1204870Sstever@eecs.umich.edu // @TODO these should be classified as responses rather than 1214870Sstever@eecs.umich.edu // requests; coding them as requests initially for backwards 1224870Sstever@eecs.umich.edu // compatibility 1234870Sstever@eecs.umich.edu InvalidDestError, // packet dest field invalid 1244870Sstever@eecs.umich.edu BadAddressError, // memory address invalid 1258436SBrad.Beckmann@amd.com FunctionalReadError, // unable to fulfill functional read 1268436SBrad.Beckmann@amd.com FunctionalWriteError, // unable to fulfill functional write 1275314Sstever@gmail.com // Fake simulator-only commands 1285314Sstever@gmail.com PrintReq, // Print state matching address 1298184Ssomayeh@cs.wisc.edu FlushReq, //request for a cache flush 1308716Snilay@cs.wisc.edu InvalidationReq, // request for address to be invalidated from lsq 1314022Sstever@eecs.umich.edu NUM_MEM_CMDS 1324022Sstever@eecs.umich.edu }; 1334022Sstever@eecs.umich.edu 1344022Sstever@eecs.umich.edu private: 1355735Snate@binkert.org /** 1365735Snate@binkert.org * List of command attributes. 1375735Snate@binkert.org */ 1384022Sstever@eecs.umich.edu enum Attribute 1394022Sstever@eecs.umich.edu { 1404626Sstever@eecs.umich.edu IsRead, //!< Data flows from responder to requester 1414626Sstever@eecs.umich.edu IsWrite, //!< Data flows from requester to responder 1427465Ssteve.reinhardt@amd.com IsUpgrade, 1434022Sstever@eecs.umich.edu IsInvalidate, 1444626Sstever@eecs.umich.edu NeedsExclusive, //!< Requires exclusive copy to complete in-cache 1454626Sstever@eecs.umich.edu IsRequest, //!< Issued by requester 1464626Sstever@eecs.umich.edu IsResponse, //!< Issue by responder 1474626Sstever@eecs.umich.edu NeedsResponse, //!< Requester needs response from target 1484022Sstever@eecs.umich.edu IsSWPrefetch, 1494022Sstever@eecs.umich.edu IsHWPrefetch, 1506076Sgblack@eecs.umich.edu IsLlsc, //!< Alpha/MIPS LL or SC access 1514626Sstever@eecs.umich.edu HasData, //!< There is an associated payload 1524870Sstever@eecs.umich.edu IsError, //!< Error response 1535314Sstever@gmail.com IsPrint, //!< Print state matching address (for debugging) 1548184Ssomayeh@cs.wisc.edu IsFlush, //!< Flush the address from caches 1554022Sstever@eecs.umich.edu NUM_COMMAND_ATTRIBUTES 1564022Sstever@eecs.umich.edu }; 1574022Sstever@eecs.umich.edu 1585735Snate@binkert.org /** 1595735Snate@binkert.org * Structure that defines attributes and other data associated 1605735Snate@binkert.org * with a Command. 1615735Snate@binkert.org */ 1625735Snate@binkert.org struct CommandInfo 1635735Snate@binkert.org { 1645735Snate@binkert.org /// Set of attribute flags. 1654022Sstever@eecs.umich.edu const std::bitset<NUM_COMMAND_ATTRIBUTES> attributes; 1665735Snate@binkert.org /// Corresponding response for requests; InvalidCmd if no 1675735Snate@binkert.org /// response is applicable. 1684022Sstever@eecs.umich.edu const Command response; 1695735Snate@binkert.org /// String representation (for printing) 1704022Sstever@eecs.umich.edu const std::string str; 1714022Sstever@eecs.umich.edu }; 1724022Sstever@eecs.umich.edu 1735735Snate@binkert.org /// Array to map Command enum to associated info. 1744022Sstever@eecs.umich.edu static const CommandInfo commandInfo[]; 1754022Sstever@eecs.umich.edu 1764022Sstever@eecs.umich.edu private: 1774022Sstever@eecs.umich.edu 1784022Sstever@eecs.umich.edu Command cmd; 1794022Sstever@eecs.umich.edu 1805735Snate@binkert.org bool 1815735Snate@binkert.org testCmdAttrib(MemCmd::Attribute attrib) const 1825735Snate@binkert.org { 1834022Sstever@eecs.umich.edu return commandInfo[cmd].attributes[attrib] != 0; 1844022Sstever@eecs.umich.edu } 1854022Sstever@eecs.umich.edu 1864022Sstever@eecs.umich.edu public: 1874022Sstever@eecs.umich.edu 1884022Sstever@eecs.umich.edu bool isRead() const { return testCmdAttrib(IsRead); } 1897465Ssteve.reinhardt@amd.com bool isWrite() const { return testCmdAttrib(IsWrite); } 1907465Ssteve.reinhardt@amd.com bool isUpgrade() const { return testCmdAttrib(IsUpgrade); } 1914022Sstever@eecs.umich.edu bool isRequest() const { return testCmdAttrib(IsRequest); } 1924022Sstever@eecs.umich.edu bool isResponse() const { return testCmdAttrib(IsResponse); } 1934870Sstever@eecs.umich.edu bool needsExclusive() const { return testCmdAttrib(NeedsExclusive); } 1944022Sstever@eecs.umich.edu bool needsResponse() const { return testCmdAttrib(NeedsResponse); } 1954022Sstever@eecs.umich.edu bool isInvalidate() const { return testCmdAttrib(IsInvalidate); } 1964022Sstever@eecs.umich.edu bool hasData() const { return testCmdAttrib(HasData); } 1974626Sstever@eecs.umich.edu bool isReadWrite() const { return isRead() && isWrite(); } 1986102Sgblack@eecs.umich.edu bool isLLSC() const { return testCmdAttrib(IsLlsc); } 1994870Sstever@eecs.umich.edu bool isError() const { return testCmdAttrib(IsError); } 2005314Sstever@gmail.com bool isPrint() const { return testCmdAttrib(IsPrint); } 2018184Ssomayeh@cs.wisc.edu bool isFlush() const { return testCmdAttrib(IsFlush); } 2024022Sstever@eecs.umich.edu 2035735Snate@binkert.org const Command 2045735Snate@binkert.org responseCommand() const 2055735Snate@binkert.org { 2064022Sstever@eecs.umich.edu return commandInfo[cmd].response; 2074022Sstever@eecs.umich.edu } 2084022Sstever@eecs.umich.edu 2095735Snate@binkert.org /// Return the string to a cmd given by idx. 2105735Snate@binkert.org const std::string &toString() const { return commandInfo[cmd].str; } 2114022Sstever@eecs.umich.edu int toInt() const { return (int)cmd; } 2124022Sstever@eecs.umich.edu 2135735Snate@binkert.org MemCmd(Command _cmd) : cmd(_cmd) { } 2145735Snate@binkert.org MemCmd(int _cmd) : cmd((Command)_cmd) { } 2155735Snate@binkert.org MemCmd() : cmd(InvalidCmd) { } 2164022Sstever@eecs.umich.edu 2175735Snate@binkert.org bool operator==(MemCmd c2) const { return (cmd == c2.cmd); } 2185735Snate@binkert.org bool operator!=(MemCmd c2) const { return (cmd != c2.cmd); } 2194022Sstever@eecs.umich.edu}; 2204022Sstever@eecs.umich.edu 2212381SN/A/** 2222662Sstever@eecs.umich.edu * A Packet is used to encapsulate a transfer between two objects in 2232662Sstever@eecs.umich.edu * the memory system (e.g., the L1 and L2 cache). (In contrast, a 2242662Sstever@eecs.umich.edu * single Request travels all the way from the requester to the 2252662Sstever@eecs.umich.edu * ultimate destination and back, possibly being conveyed by several 2262662Sstever@eecs.umich.edu * different Packets along the way.) 2272381SN/A */ 2289044SAli.Saidi@ARM.comclass Packet : public Printable 2292381SN/A{ 2302813Srdreslin@umich.edu public: 2315735Snate@binkert.org typedef uint32_t FlagsType; 2325735Snate@binkert.org typedef ::Flags<FlagsType> Flags; 2334022Sstever@eecs.umich.edu 2345735Snate@binkert.org private: 2355735Snate@binkert.org static const FlagsType PUBLIC_FLAGS = 0x00000000; 2365735Snate@binkert.org static const FlagsType PRIVATE_FLAGS = 0x00007F0F; 2375735Snate@binkert.org static const FlagsType COPY_FLAGS = 0x0000000F; 2385735Snate@binkert.org 2395735Snate@binkert.org static const FlagsType SHARED = 0x00000001; 2405735Snate@binkert.org // Special control flags 2415735Snate@binkert.org /// Special timing-mode atomic snoop for multi-level coherence. 2425735Snate@binkert.org static const FlagsType EXPRESS_SNOOP = 0x00000002; 2435735Snate@binkert.org /// Does supplier have exclusive copy? 2445735Snate@binkert.org /// Useful for multi-level coherence. 2455735Snate@binkert.org static const FlagsType SUPPLY_EXCLUSIVE = 0x00000004; 2465735Snate@binkert.org // Snoop response flags 2475735Snate@binkert.org static const FlagsType MEM_INHIBIT = 0x00000008; 2485735Snate@binkert.org /// Are the 'addr' and 'size' fields valid? 2495735Snate@binkert.org static const FlagsType VALID_ADDR = 0x00000100; 2505735Snate@binkert.org static const FlagsType VALID_SIZE = 0x00000200; 2515735Snate@binkert.org /// Is the data pointer set to a value that shouldn't be freed 2525735Snate@binkert.org /// when the packet is destroyed? 2535735Snate@binkert.org static const FlagsType STATIC_DATA = 0x00001000; 2545735Snate@binkert.org /// The data pointer points to a value that should be freed when 2555735Snate@binkert.org /// the packet is destroyed. 2565735Snate@binkert.org static const FlagsType DYNAMIC_DATA = 0x00002000; 2575735Snate@binkert.org /// the data pointer points to an array (thus delete []) needs to 2585735Snate@binkert.org /// be called on it rather than simply delete. 2595735Snate@binkert.org static const FlagsType ARRAY_DATA = 0x00004000; 2608436SBrad.Beckmann@amd.com /// suppress the error if this packet encounters a functional 2618436SBrad.Beckmann@amd.com /// access failure. 2628436SBrad.Beckmann@amd.com static const FlagsType SUPPRESS_FUNC_ERROR = 0x00008000; 26310192Smitch.hayenga@arm.com // Signal prefetch squash through express snoop flag 26410192Smitch.hayenga@arm.com static const FlagsType PREFETCH_SNOOP_SQUASH = 0x00010000; 2655735Snate@binkert.org 2665735Snate@binkert.org Flags flags; 2675735Snate@binkert.org 2685735Snate@binkert.org public: 2694022Sstever@eecs.umich.edu typedef MemCmd::Command Command; 2704022Sstever@eecs.umich.edu 2715735Snate@binkert.org /// The command field of the packet. 2724870Sstever@eecs.umich.edu MemCmd cmd; 2734870Sstever@eecs.umich.edu 2745735Snate@binkert.org /// A pointer to the original request. 2754870Sstever@eecs.umich.edu RequestPtr req; 2764870Sstever@eecs.umich.edu 2772566SN/A private: 2785735Snate@binkert.org /** 2795735Snate@binkert.org * A pointer to the data being transfered. It can be differnt 2805735Snate@binkert.org * sizes at each level of the heirarchy so it belongs in the 2815735Snate@binkert.org * packet, not request. This may or may not be populated when a 2825735Snate@binkert.org * responder recieves the packet. If not populated it memory should 2835735Snate@binkert.org * be allocated. 2842566SN/A */ 2852566SN/A PacketDataPtr data; 2862566SN/A 2875735Snate@binkert.org /// The address of the request. This address could be virtual or 2885735Snate@binkert.org /// physical, depending on the system configuration. 2892381SN/A Addr addr; 2902381SN/A 29110028SGiacomo.Gabrielli@arm.com /// True if the request targets the secure memory space. 29210028SGiacomo.Gabrielli@arm.com bool _isSecure; 29310028SGiacomo.Gabrielli@arm.com 2945735Snate@binkert.org /// The size of the request or transfer. 2956227Snate@binkert.org unsigned size; 2962381SN/A 2975735Snate@binkert.org /** 2989030Sandreas.hansson@arm.com * Source port identifier set on a request packet to enable 2999030Sandreas.hansson@arm.com * appropriate routing of the responses. The source port 3009030Sandreas.hansson@arm.com * identifier is set by any multiplexing component, e.g. a bus, as 3019030Sandreas.hansson@arm.com * the timing responses need this information to be routed back to 3029030Sandreas.hansson@arm.com * the appropriate port at a later point in time. The field can be 3039030Sandreas.hansson@arm.com * updated (over-written) as the request packet passes through 3049030Sandreas.hansson@arm.com * additional multiplexing components, and it is their 3059030Sandreas.hansson@arm.com * responsibility to remember the original source port identifier, 3069030Sandreas.hansson@arm.com * for example by using an appropriate sender state. The latter is 3079030Sandreas.hansson@arm.com * done in the cache and bridge. 3085735Snate@binkert.org */ 3099031Sandreas.hansson@arm.com PortID src; 3102381SN/A 3115735Snate@binkert.org /** 3129030Sandreas.hansson@arm.com * Destination port identifier that is present on all response 3139030Sandreas.hansson@arm.com * packets that passed through a multiplexing component as a 3149030Sandreas.hansson@arm.com * request packet. The source port identifier is turned into a 3159030Sandreas.hansson@arm.com * destination port identifier when the packet is turned into a 3169030Sandreas.hansson@arm.com * response, and the destination is used, e.g. by the bus, to 3179030Sandreas.hansson@arm.com * select the appropriate path through the interconnect. 3185735Snate@binkert.org */ 3199031Sandreas.hansson@arm.com PortID dest; 3202641Sstever@eecs.umich.edu 3215735Snate@binkert.org /** 3225735Snate@binkert.org * The original value of the command field. Only valid when the 3234870Sstever@eecs.umich.edu * current command field is an error condition; in that case, the 3244870Sstever@eecs.umich.edu * previous contents of the command field are copied here. This 3254870Sstever@eecs.umich.edu * field is *not* set on non-error responses. 3264870Sstever@eecs.umich.edu */ 3274870Sstever@eecs.umich.edu MemCmd origCmd; 3284870Sstever@eecs.umich.edu 3298668Sgeoffrey.blake@arm.com /** 3308668Sgeoffrey.blake@arm.com * These values specify the range of bytes found that satisfy a 3318668Sgeoffrey.blake@arm.com * functional read. 3328668Sgeoffrey.blake@arm.com */ 3338668Sgeoffrey.blake@arm.com uint16_t bytesValidStart; 3348668Sgeoffrey.blake@arm.com uint16_t bytesValidEnd; 3358668Sgeoffrey.blake@arm.com 3362641Sstever@eecs.umich.edu public: 3372811Srdreslin@umich.edu 3389547Sandreas.hansson@arm.com /** 3399547Sandreas.hansson@arm.com * The extra delay from seeing the packet until the first word is 3409547Sandreas.hansson@arm.com * transmitted by the bus that provided it (if any). This delay is 3419547Sandreas.hansson@arm.com * used to communicate the bus waiting time to the neighbouring 3429547Sandreas.hansson@arm.com * object (e.g. a cache) that actually makes the packet wait. As 3439547Sandreas.hansson@arm.com * the delay is relative, a 32-bit unsigned should be sufficient. 3449547Sandreas.hansson@arm.com */ 3459547Sandreas.hansson@arm.com uint32_t busFirstWordDelay; 3463218Sgblack@eecs.umich.edu 3479547Sandreas.hansson@arm.com /** 3489547Sandreas.hansson@arm.com * The extra delay from seeing the packet until the last word is 3499547Sandreas.hansson@arm.com * transmitted by the bus that provided it (if any). Similar to 3509547Sandreas.hansson@arm.com * the first word time, this is used to make up for the fact that 3519547Sandreas.hansson@arm.com * the bus does not make the packet wait. As the delay is relative, 3529547Sandreas.hansson@arm.com * a 32-bit unsigned should be sufficient. 3539547Sandreas.hansson@arm.com */ 3549547Sandreas.hansson@arm.com uint32_t busLastWordDelay; 3553218Sgblack@eecs.umich.edu 3565735Snate@binkert.org /** 3575735Snate@binkert.org * A virtual base opaque structure used to hold state associated 3589542Sandreas.hansson@arm.com * with the packet (e.g., an MSHR), specific to a MemObject that 3599542Sandreas.hansson@arm.com * sees the packet. A pointer to this state is returned in the 3609542Sandreas.hansson@arm.com * packet's response so that the MemObject in question can quickly 3619542Sandreas.hansson@arm.com * look up the state needed to process it. A specific subclass 3629542Sandreas.hansson@arm.com * would be derived from this to carry state specific to a 3639542Sandreas.hansson@arm.com * particular sending device. 3649542Sandreas.hansson@arm.com * 3659542Sandreas.hansson@arm.com * As multiple MemObjects may add their SenderState throughout the 3669542Sandreas.hansson@arm.com * memory system, the SenderStates create a stack, where a 3679542Sandreas.hansson@arm.com * MemObject can add a new Senderstate, as long as the 3689542Sandreas.hansson@arm.com * predecessing SenderState is restored when the response comes 3699542Sandreas.hansson@arm.com * back. For this reason, the predecessor should always be 3709542Sandreas.hansson@arm.com * populated with the current SenderState of a packet before 3719542Sandreas.hansson@arm.com * modifying the senderState field in the request packet. 3725735Snate@binkert.org */ 3735735Snate@binkert.org struct SenderState 3745735Snate@binkert.org { 3759542Sandreas.hansson@arm.com SenderState* predecessor; 3769542Sandreas.hansson@arm.com SenderState() : predecessor(NULL) {} 3772641Sstever@eecs.umich.edu virtual ~SenderState() {} 3782641Sstever@eecs.umich.edu }; 3792641Sstever@eecs.umich.edu 3805315Sstever@gmail.com /** 3815315Sstever@gmail.com * Object used to maintain state of a PrintReq. The senderState 3825315Sstever@gmail.com * field of a PrintReq should always be of this type. 3835315Sstever@gmail.com */ 3849044SAli.Saidi@ARM.com class PrintReqState : public SenderState 3855735Snate@binkert.org { 3865735Snate@binkert.org private: 3875735Snate@binkert.org /** 3885735Snate@binkert.org * An entry in the label stack. 3895735Snate@binkert.org */ 3905735Snate@binkert.org struct LabelStackEntry 3915735Snate@binkert.org { 3925314Sstever@gmail.com const std::string label; 3935314Sstever@gmail.com std::string *prefix; 3945314Sstever@gmail.com bool labelPrinted; 3955735Snate@binkert.org LabelStackEntry(const std::string &_label, std::string *_prefix); 3965314Sstever@gmail.com }; 3975314Sstever@gmail.com 3985314Sstever@gmail.com typedef std::list<LabelStackEntry> LabelStack; 3995314Sstever@gmail.com LabelStack labelStack; 4005314Sstever@gmail.com 4015314Sstever@gmail.com std::string *curPrefixPtr; 4025314Sstever@gmail.com 4035314Sstever@gmail.com public: 4045314Sstever@gmail.com std::ostream &os; 4055314Sstever@gmail.com const int verbosity; 4065314Sstever@gmail.com 4075314Sstever@gmail.com PrintReqState(std::ostream &os, int verbosity = 0); 4085314Sstever@gmail.com ~PrintReqState(); 4095314Sstever@gmail.com 4105735Snate@binkert.org /** 4115735Snate@binkert.org * Returns the current line prefix. 4125735Snate@binkert.org */ 4135314Sstever@gmail.com const std::string &curPrefix() { return *curPrefixPtr; } 4145315Sstever@gmail.com 4155735Snate@binkert.org /** 4165735Snate@binkert.org * Push a label onto the label stack, and prepend the given 4175315Sstever@gmail.com * prefix string onto the current prefix. Labels will only be 4185735Snate@binkert.org * printed if an object within the label's scope is printed. 4195735Snate@binkert.org */ 4205314Sstever@gmail.com void pushLabel(const std::string &lbl, 4215314Sstever@gmail.com const std::string &prefix = " "); 4225735Snate@binkert.org 4235735Snate@binkert.org /** 4245735Snate@binkert.org * Pop a label off the label stack. 4255735Snate@binkert.org */ 4265314Sstever@gmail.com void popLabel(); 4275735Snate@binkert.org 4285735Snate@binkert.org /** 4295735Snate@binkert.org * Print all of the pending unprinted labels on the 4305315Sstever@gmail.com * stack. Called by printObj(), so normally not called by 4315735Snate@binkert.org * users unless bypassing printObj(). 4325735Snate@binkert.org */ 4335314Sstever@gmail.com void printLabels(); 4345735Snate@binkert.org 4355735Snate@binkert.org /** 4365735Snate@binkert.org * Print a Printable object to os, because it matched the 4375735Snate@binkert.org * address on a PrintReq. 4385735Snate@binkert.org */ 4395314Sstever@gmail.com void printObj(Printable *obj); 4405314Sstever@gmail.com }; 4415314Sstever@gmail.com 4425735Snate@binkert.org /** 4435735Snate@binkert.org * This packet's sender state. Devices should use dynamic_cast<> 4445735Snate@binkert.org * to cast to the state appropriate to the sender. The intent of 4455735Snate@binkert.org * this variable is to allow a device to attach extra information 4469542Sandreas.hansson@arm.com * to a request. A response packet must return the sender state 4475735Snate@binkert.org * that was attached to the original request (even if a new packet 4485735Snate@binkert.org * is created). 4495735Snate@binkert.org */ 4502662Sstever@eecs.umich.edu SenderState *senderState; 4512641Sstever@eecs.umich.edu 4529542Sandreas.hansson@arm.com /** 4539542Sandreas.hansson@arm.com * Push a new sender state to the packet and make the current 4549542Sandreas.hansson@arm.com * sender state the predecessor of the new one. This should be 4559542Sandreas.hansson@arm.com * prefered over direct manipulation of the senderState member 4569542Sandreas.hansson@arm.com * variable. 4579542Sandreas.hansson@arm.com * 4589542Sandreas.hansson@arm.com * @param sender_state SenderState to push at the top of the stack 4599542Sandreas.hansson@arm.com */ 4609542Sandreas.hansson@arm.com void pushSenderState(SenderState *sender_state); 4619542Sandreas.hansson@arm.com 4629542Sandreas.hansson@arm.com /** 4639542Sandreas.hansson@arm.com * Pop the top of the state stack and return a pointer to it. This 4649542Sandreas.hansson@arm.com * assumes the current sender state is not NULL. This should be 4659542Sandreas.hansson@arm.com * preferred over direct manipulation of the senderState member 4669542Sandreas.hansson@arm.com * variable. 4679542Sandreas.hansson@arm.com * 4689542Sandreas.hansson@arm.com * @return The current top of the stack 4699542Sandreas.hansson@arm.com */ 4709542Sandreas.hansson@arm.com SenderState *popSenderState(); 4719542Sandreas.hansson@arm.com 4729543Ssascha.bischoff@arm.com /** 4739543Ssascha.bischoff@arm.com * Go through the sender state stack and return the first instance 4749543Ssascha.bischoff@arm.com * that is of type T (as determined by a dynamic_cast). If there 4759543Ssascha.bischoff@arm.com * is no sender state of type T, NULL is returned. 4769543Ssascha.bischoff@arm.com * 4779543Ssascha.bischoff@arm.com * @return The topmost state of type T 4789543Ssascha.bischoff@arm.com */ 4799543Ssascha.bischoff@arm.com template <typename T> 4809543Ssascha.bischoff@arm.com T * findNextSenderState() const 4819543Ssascha.bischoff@arm.com { 4829543Ssascha.bischoff@arm.com T *t = NULL; 4839543Ssascha.bischoff@arm.com SenderState* sender_state = senderState; 4849543Ssascha.bischoff@arm.com while (t == NULL && sender_state != NULL) { 4859543Ssascha.bischoff@arm.com t = dynamic_cast<T*>(sender_state); 4869543Ssascha.bischoff@arm.com sender_state = sender_state->predecessor; 4879543Ssascha.bischoff@arm.com } 4889543Ssascha.bischoff@arm.com return t; 4899543Ssascha.bischoff@arm.com } 4909543Ssascha.bischoff@arm.com 4915735Snate@binkert.org /// Return the string name of the cmd field (for debugging and 4925735Snate@binkert.org /// tracing). 4934022Sstever@eecs.umich.edu const std::string &cmdString() const { return cmd.toString(); } 4942811Srdreslin@umich.edu 4955735Snate@binkert.org /// Return the index of this command. 4964022Sstever@eecs.umich.edu inline int cmdToIndex() const { return cmd.toInt(); } 4972811Srdreslin@umich.edu 4984022Sstever@eecs.umich.edu bool isRead() const { return cmd.isRead(); } 4997465Ssteve.reinhardt@amd.com bool isWrite() const { return cmd.isWrite(); } 5007465Ssteve.reinhardt@amd.com bool isUpgrade() const { return cmd.isUpgrade(); } 5014022Sstever@eecs.umich.edu bool isRequest() const { return cmd.isRequest(); } 5024022Sstever@eecs.umich.edu bool isResponse() const { return cmd.isResponse(); } 5034870Sstever@eecs.umich.edu bool needsExclusive() const { return cmd.needsExclusive(); } 5044022Sstever@eecs.umich.edu bool needsResponse() const { return cmd.needsResponse(); } 5054022Sstever@eecs.umich.edu bool isInvalidate() const { return cmd.isInvalidate(); } 5064022Sstever@eecs.umich.edu bool hasData() const { return cmd.hasData(); } 5074040Ssaidi@eecs.umich.edu bool isReadWrite() const { return cmd.isReadWrite(); } 5086102Sgblack@eecs.umich.edu bool isLLSC() const { return cmd.isLLSC(); } 5094870Sstever@eecs.umich.edu bool isError() const { return cmd.isError(); } 5105314Sstever@gmail.com bool isPrint() const { return cmd.isPrint(); } 5118184Ssomayeh@cs.wisc.edu bool isFlush() const { return cmd.isFlush(); } 5122812Srdreslin@umich.edu 5134870Sstever@eecs.umich.edu // Snoop flags 5149951Sstephan.diestelhorst@arm.com void assertMemInhibit() { flags.set(MEM_INHIBIT); } 5159951Sstephan.diestelhorst@arm.com bool memInhibitAsserted() const { return flags.isSet(MEM_INHIBIT); } 5169951Sstephan.diestelhorst@arm.com void assertShared() { flags.set(SHARED); } 5179951Sstephan.diestelhorst@arm.com bool sharedAsserted() const { return flags.isSet(SHARED); } 5184870Sstever@eecs.umich.edu 5194895Sstever@eecs.umich.edu // Special control flags 5209951Sstephan.diestelhorst@arm.com void setExpressSnoop() { flags.set(EXPRESS_SNOOP); } 5219951Sstephan.diestelhorst@arm.com bool isExpressSnoop() const { return flags.isSet(EXPRESS_SNOOP); } 5229951Sstephan.diestelhorst@arm.com void setSupplyExclusive() { flags.set(SUPPLY_EXCLUSIVE); } 5239951Sstephan.diestelhorst@arm.com void clearSupplyExclusive() { flags.clear(SUPPLY_EXCLUSIVE); } 5249951Sstephan.diestelhorst@arm.com bool isSupplyExclusive() const { return flags.isSet(SUPPLY_EXCLUSIVE); } 5259951Sstephan.diestelhorst@arm.com void setSuppressFuncError() { flags.set(SUPPRESS_FUNC_ERROR); } 5269951Sstephan.diestelhorst@arm.com bool suppressFuncError() const { return flags.isSet(SUPPRESS_FUNC_ERROR); } 52710192Smitch.hayenga@arm.com void setPrefetchSquashed() { flags.set(PREFETCH_SNOOP_SQUASH); } 52810192Smitch.hayenga@arm.com bool prefetchSquashed() const { return flags.isSet(PREFETCH_SNOOP_SQUASH); } 5294895Sstever@eecs.umich.edu 5304870Sstever@eecs.umich.edu // Network error conditions... encapsulate them as methods since 5314870Sstever@eecs.umich.edu // their encoding keeps changing (from result field to command 5324870Sstever@eecs.umich.edu // field, etc.) 5335735Snate@binkert.org void 5345735Snate@binkert.org setBadAddress() 5355735Snate@binkert.org { 5365735Snate@binkert.org assert(isResponse()); 5375735Snate@binkert.org cmd = MemCmd::BadAddressError; 5385735Snate@binkert.org } 5395735Snate@binkert.org 5405735Snate@binkert.org bool hadBadAddress() const { return cmd == MemCmd::BadAddressError; } 5414986Ssaidi@eecs.umich.edu void copyError(Packet *pkt) { assert(pkt->isError()); cmd = pkt->cmd; } 5422814Srdreslin@umich.edu 5439031Sandreas.hansson@arm.com bool isSrcValid() const { return src != InvalidPortID; } 5445735Snate@binkert.org /// Accessor function to get the source index of the packet. 5459031Sandreas.hansson@arm.com PortID getSrc() const { assert(isSrcValid()); return src; } 5465735Snate@binkert.org /// Accessor function to set the source index of the packet. 5479031Sandreas.hansson@arm.com void setSrc(PortID _src) { src = _src; } 5485735Snate@binkert.org /// Reset source field, e.g. to retransmit packet on different bus. 5499031Sandreas.hansson@arm.com void clearSrc() { src = InvalidPortID; } 5502641Sstever@eecs.umich.edu 5519031Sandreas.hansson@arm.com bool isDestValid() const { return dest != InvalidPortID; } 5525735Snate@binkert.org /// Accessor function for the destination index of the packet. 5539031Sandreas.hansson@arm.com PortID getDest() const { assert(isDestValid()); return dest; } 5545735Snate@binkert.org /// Accessor function to set the destination index of the packet. 5559031Sandreas.hansson@arm.com void setDest(PortID _dest) { dest = _dest; } 5568949Sandreas.hansson@arm.com /// Reset destination field, e.g. to turn a response into a request again. 5579031Sandreas.hansson@arm.com void clearDest() { dest = InvalidPortID; } 5582381SN/A 5595764Snate@binkert.org Addr getAddr() const { assert(flags.isSet(VALID_ADDR)); return addr; } 5609259SAli.Saidi@ARM.com /** 5619259SAli.Saidi@ARM.com * Update the address of this packet mid-transaction. This is used 5629259SAli.Saidi@ARM.com * by the address mapper to change an already set address to a new 5639259SAli.Saidi@ARM.com * one based on the system configuration. It is intended to remap 5649259SAli.Saidi@ARM.com * an existing address, so it asserts that the current address is 5659259SAli.Saidi@ARM.com * valid. 5669259SAli.Saidi@ARM.com */ 5679259SAli.Saidi@ARM.com void setAddr(Addr _addr) { assert(flags.isSet(VALID_ADDR)); addr = _addr; } 5689259SAli.Saidi@ARM.com 5696227Snate@binkert.org unsigned getSize() const { assert(flags.isSet(VALID_SIZE)); return size; } 5705735Snate@binkert.org Addr getOffset(int blkSize) const { return getAddr() & (Addr)(blkSize - 1); } 5712549SN/A 57210028SGiacomo.Gabrielli@arm.com bool isSecure() const 57310028SGiacomo.Gabrielli@arm.com { 57410028SGiacomo.Gabrielli@arm.com assert(flags.isSet(VALID_ADDR)); 57510028SGiacomo.Gabrielli@arm.com return _isSecure; 57610028SGiacomo.Gabrielli@arm.com } 57710028SGiacomo.Gabrielli@arm.com 5785735Snate@binkert.org /** 5797550SBrad.Beckmann@amd.com * It has been determined that the SC packet should successfully update 5807550SBrad.Beckmann@amd.com * memory. Therefore, convert this SC packet to a normal write. 5817550SBrad.Beckmann@amd.com */ 5827550SBrad.Beckmann@amd.com void 5837550SBrad.Beckmann@amd.com convertScToWrite() 5847550SBrad.Beckmann@amd.com { 5857550SBrad.Beckmann@amd.com assert(isLLSC()); 5867550SBrad.Beckmann@amd.com assert(isWrite()); 5877550SBrad.Beckmann@amd.com cmd = MemCmd::WriteReq; 5887550SBrad.Beckmann@amd.com } 5897550SBrad.Beckmann@amd.com 5907550SBrad.Beckmann@amd.com /** 5917550SBrad.Beckmann@amd.com * When ruby is in use, Ruby will monitor the cache line and thus M5 5927550SBrad.Beckmann@amd.com * phys memory should treat LL ops as normal reads. 5937550SBrad.Beckmann@amd.com */ 5947550SBrad.Beckmann@amd.com void 5957550SBrad.Beckmann@amd.com convertLlToRead() 5967550SBrad.Beckmann@amd.com { 5977550SBrad.Beckmann@amd.com assert(isLLSC()); 5987550SBrad.Beckmann@amd.com assert(isRead()); 5997550SBrad.Beckmann@amd.com cmd = MemCmd::ReadReq; 6007550SBrad.Beckmann@amd.com } 6017550SBrad.Beckmann@amd.com 6027550SBrad.Beckmann@amd.com /** 6035735Snate@binkert.org * Constructor. Note that a Request object must be constructed 6045735Snate@binkert.org * first, but the Requests's physical address and size fields need 6059030Sandreas.hansson@arm.com * not be valid. The command must be supplied. 6065735Snate@binkert.org */ 6078949Sandreas.hansson@arm.com Packet(Request *_req, MemCmd _cmd) 6088949Sandreas.hansson@arm.com : cmd(_cmd), req(_req), data(NULL), 6099031Sandreas.hansson@arm.com src(InvalidPortID), dest(InvalidPortID), 6108949Sandreas.hansson@arm.com bytesValidStart(0), bytesValidEnd(0), 6119547Sandreas.hansson@arm.com busFirstWordDelay(0), busLastWordDelay(0), 6129546Sandreas.hansson@arm.com senderState(NULL) 6132641Sstever@eecs.umich.edu { 6146104Ssteve.reinhardt@amd.com if (req->hasPaddr()) { 6156104Ssteve.reinhardt@amd.com addr = req->getPaddr(); 6166104Ssteve.reinhardt@amd.com flags.set(VALID_ADDR); 61710028SGiacomo.Gabrielli@arm.com _isSecure = req->isSecure(); 6186104Ssteve.reinhardt@amd.com } 6196104Ssteve.reinhardt@amd.com if (req->hasSize()) { 6206104Ssteve.reinhardt@amd.com size = req->getSize(); 6216104Ssteve.reinhardt@amd.com flags.set(VALID_SIZE); 6226104Ssteve.reinhardt@amd.com } 6232813Srdreslin@umich.edu } 6242813Srdreslin@umich.edu 6255735Snate@binkert.org /** 6265735Snate@binkert.org * Alternate constructor if you are trying to create a packet with 6275735Snate@binkert.org * a request that is for a whole block, not the address from the 6285735Snate@binkert.org * req. this allows for overriding the size/addr of the req. 6295735Snate@binkert.org */ 6308949Sandreas.hansson@arm.com Packet(Request *_req, MemCmd _cmd, int _blkSize) 6318949Sandreas.hansson@arm.com : cmd(_cmd), req(_req), data(NULL), 6329031Sandreas.hansson@arm.com src(InvalidPortID), dest(InvalidPortID), 6338949Sandreas.hansson@arm.com bytesValidStart(0), bytesValidEnd(0), 6349547Sandreas.hansson@arm.com busFirstWordDelay(0), busLastWordDelay(0), 6359546Sandreas.hansson@arm.com senderState(NULL) 6362813Srdreslin@umich.edu { 6376104Ssteve.reinhardt@amd.com if (req->hasPaddr()) { 6386104Ssteve.reinhardt@amd.com addr = req->getPaddr() & ~(_blkSize - 1); 6396104Ssteve.reinhardt@amd.com flags.set(VALID_ADDR); 64010028SGiacomo.Gabrielli@arm.com _isSecure = req->isSecure(); 6416104Ssteve.reinhardt@amd.com } 6426104Ssteve.reinhardt@amd.com size = _blkSize; 6436104Ssteve.reinhardt@amd.com flags.set(VALID_SIZE); 6444626Sstever@eecs.umich.edu } 6454626Sstever@eecs.umich.edu 6465735Snate@binkert.org /** 6475735Snate@binkert.org * Alternate constructor for copying a packet. Copy all fields 6484887Sstever@eecs.umich.edu * *except* if the original packet's data was dynamic, don't copy 6494887Sstever@eecs.umich.edu * that, as we can't guarantee that the new packet's lifetime is 6504887Sstever@eecs.umich.edu * less than that of the original packet. In this case the new 6515735Snate@binkert.org * packet should allocate its own data. 6525735Snate@binkert.org */ 6535735Snate@binkert.org Packet(Packet *pkt, bool clearFlags = false) 6545735Snate@binkert.org : cmd(pkt->cmd), req(pkt->req), 6555764Snate@binkert.org data(pkt->flags.isSet(STATIC_DATA) ? pkt->data : NULL), 65610028SGiacomo.Gabrielli@arm.com addr(pkt->addr), _isSecure(pkt->_isSecure), size(pkt->size), 65710028SGiacomo.Gabrielli@arm.com src(pkt->src), dest(pkt->dest), 6589547Sandreas.hansson@arm.com bytesValidStart(pkt->bytesValidStart), 6599547Sandreas.hansson@arm.com bytesValidEnd(pkt->bytesValidEnd), 6609547Sandreas.hansson@arm.com busFirstWordDelay(pkt->busFirstWordDelay), 6619547Sandreas.hansson@arm.com busLastWordDelay(pkt->busLastWordDelay), 6629546Sandreas.hansson@arm.com senderState(pkt->senderState) 6634626Sstever@eecs.umich.edu { 6645735Snate@binkert.org if (!clearFlags) 6655735Snate@binkert.org flags.set(pkt->flags & COPY_FLAGS); 6665735Snate@binkert.org 6679031Sandreas.hansson@arm.com flags.set(pkt->flags & (VALID_ADDR|VALID_SIZE)); 6685735Snate@binkert.org flags.set(pkt->flags & STATIC_DATA); 6698668Sgeoffrey.blake@arm.com 6702641Sstever@eecs.umich.edu } 6712549SN/A 6725735Snate@binkert.org /** 6735735Snate@binkert.org * clean up packet variables 6745735Snate@binkert.org */ 6752566SN/A ~Packet() 6765387Sstever@gmail.com { 6775387Sstever@gmail.com // If this is a request packet for which there's no response, 6785387Sstever@gmail.com // delete the request object here, since the requester will 6795387Sstever@gmail.com // never get the chance. 6805387Sstever@gmail.com if (req && isRequest() && !needsResponse()) 6815387Sstever@gmail.com delete req; 6825735Snate@binkert.org deleteData(); 6835387Sstever@gmail.com } 6842566SN/A 6855735Snate@binkert.org /** 6865735Snate@binkert.org * Reinitialize packet address and size from the associated 6875735Snate@binkert.org * Request object, and reset other fields that may have been 6885735Snate@binkert.org * modified by a previous transaction. Typically called when a 6895735Snate@binkert.org * statically allocated Request/Packet pair is reused for multiple 6905735Snate@binkert.org * transactions. 6915735Snate@binkert.org */ 6925735Snate@binkert.org void 6935735Snate@binkert.org reinitFromRequest() 6945735Snate@binkert.org { 6956104Ssteve.reinhardt@amd.com assert(req->hasPaddr()); 6964870Sstever@eecs.umich.edu flags = 0; 6976104Ssteve.reinhardt@amd.com addr = req->getPaddr(); 69810028SGiacomo.Gabrielli@arm.com _isSecure = req->isSecure(); 6996104Ssteve.reinhardt@amd.com size = req->getSize(); 7005735Snate@binkert.org 7019547Sandreas.hansson@arm.com src = InvalidPortID; 7029547Sandreas.hansson@arm.com dest = InvalidPortID; 7039547Sandreas.hansson@arm.com bytesValidStart = 0; 7049547Sandreas.hansson@arm.com bytesValidEnd = 0; 7059547Sandreas.hansson@arm.com busFirstWordDelay = 0; 7069547Sandreas.hansson@arm.com busLastWordDelay = 0; 7079547Sandreas.hansson@arm.com 7085735Snate@binkert.org flags.set(VALID_ADDR|VALID_SIZE); 7095735Snate@binkert.org deleteData(); 7102662Sstever@eecs.umich.edu } 7112566SN/A 7124626Sstever@eecs.umich.edu /** 7134626Sstever@eecs.umich.edu * Take a request packet and modify it in place to be suitable for 7149030Sandreas.hansson@arm.com * returning as a response to that request. The source field is 7159030Sandreas.hansson@arm.com * turned into the destination, and subsequently cleared. Note 7169030Sandreas.hansson@arm.com * that the latter is not necessary for atomic requests, but 7179030Sandreas.hansson@arm.com * causes no harm as neither field is valid. 7184626Sstever@eecs.umich.edu */ 7195735Snate@binkert.org void 7205735Snate@binkert.org makeResponse() 7214626Sstever@eecs.umich.edu { 7222662Sstever@eecs.umich.edu assert(needsResponse()); 7232855Srdreslin@umich.edu assert(isRequest()); 7244986Ssaidi@eecs.umich.edu origCmd = cmd; 7254022Sstever@eecs.umich.edu cmd = cmd.responseCommand(); 7265745Snate@binkert.org 7277464Ssteve.reinhardt@amd.com // responses are never express, even if the snoop that 7287464Ssteve.reinhardt@amd.com // triggered them was 7297464Ssteve.reinhardt@amd.com flags.clear(EXPRESS_SNOOP); 7307464Ssteve.reinhardt@amd.com 7315745Snate@binkert.org dest = src; 7329031Sandreas.hansson@arm.com clearSrc(); 7332641Sstever@eecs.umich.edu } 7342641Sstever@eecs.umich.edu 7355735Snate@binkert.org void 7365735Snate@binkert.org makeAtomicResponse() 7374870Sstever@eecs.umich.edu { 7384870Sstever@eecs.umich.edu makeResponse(); 7394870Sstever@eecs.umich.edu } 7404870Sstever@eecs.umich.edu 7415735Snate@binkert.org void 7425735Snate@binkert.org makeTimingResponse() 7433348Sbinkertn@umich.edu { 7444870Sstever@eecs.umich.edu makeResponse(); 7453135Srdreslin@umich.edu } 7463135Srdreslin@umich.edu 7478436SBrad.Beckmann@amd.com void 7488436SBrad.Beckmann@amd.com setFunctionalResponseStatus(bool success) 7498436SBrad.Beckmann@amd.com { 7508436SBrad.Beckmann@amd.com if (!success) { 7518436SBrad.Beckmann@amd.com if (isWrite()) { 7528436SBrad.Beckmann@amd.com cmd = MemCmd::FunctionalWriteError; 7538436SBrad.Beckmann@amd.com } else { 7548436SBrad.Beckmann@amd.com cmd = MemCmd::FunctionalReadError; 7558436SBrad.Beckmann@amd.com } 7568436SBrad.Beckmann@amd.com } 7578436SBrad.Beckmann@amd.com } 7588436SBrad.Beckmann@amd.com 7597006Snate@binkert.org void 7607006Snate@binkert.org setSize(unsigned size) 7617006Snate@binkert.org { 7627006Snate@binkert.org assert(!flags.isSet(VALID_SIZE)); 7637006Snate@binkert.org 7647006Snate@binkert.org this->size = size; 7657006Snate@binkert.org flags.set(VALID_SIZE); 7667006Snate@binkert.org } 7677006Snate@binkert.org 7682685Ssaidi@eecs.umich.edu 7693348Sbinkertn@umich.edu /** 7703348Sbinkertn@umich.edu * Set the data pointer to the following value that should not be 7713348Sbinkertn@umich.edu * freed. 7722566SN/A */ 7732566SN/A template <typename T> 7743348Sbinkertn@umich.edu void 7753348Sbinkertn@umich.edu dataStatic(T *p) 7763348Sbinkertn@umich.edu { 7775764Snate@binkert.org assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA)); 7783348Sbinkertn@umich.edu data = (PacketDataPtr)p; 7795735Snate@binkert.org flags.set(STATIC_DATA); 7803348Sbinkertn@umich.edu } 7812566SN/A 7823348Sbinkertn@umich.edu /** 7833348Sbinkertn@umich.edu * Set the data pointer to a value that should have delete [] 7843348Sbinkertn@umich.edu * called on it. 7853348Sbinkertn@umich.edu */ 7862566SN/A template <typename T> 7873348Sbinkertn@umich.edu void 7883348Sbinkertn@umich.edu dataDynamicArray(T *p) 7893348Sbinkertn@umich.edu { 7905764Snate@binkert.org assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA)); 7913348Sbinkertn@umich.edu data = (PacketDataPtr)p; 7925735Snate@binkert.org flags.set(DYNAMIC_DATA|ARRAY_DATA); 7933348Sbinkertn@umich.edu } 7943348Sbinkertn@umich.edu 7953348Sbinkertn@umich.edu /** 7963348Sbinkertn@umich.edu * set the data pointer to a value that should have delete called 7973348Sbinkertn@umich.edu * on it. 7983348Sbinkertn@umich.edu */ 7993348Sbinkertn@umich.edu template <typename T> 8003348Sbinkertn@umich.edu void 8013348Sbinkertn@umich.edu dataDynamic(T *p) 8023348Sbinkertn@umich.edu { 8035764Snate@binkert.org assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA)); 8043348Sbinkertn@umich.edu data = (PacketDataPtr)p; 8055735Snate@binkert.org flags.set(DYNAMIC_DATA); 8063348Sbinkertn@umich.edu } 8073348Sbinkertn@umich.edu 8085735Snate@binkert.org /** 8095735Snate@binkert.org * get a pointer to the data ptr. 8105735Snate@binkert.org */ 8113348Sbinkertn@umich.edu template <typename T> 8123348Sbinkertn@umich.edu T* 8137915SBrad.Beckmann@amd.com getPtr(bool null_ok = false) 8143348Sbinkertn@umich.edu { 8157915SBrad.Beckmann@amd.com assert(null_ok || flags.isSet(STATIC_DATA|DYNAMIC_DATA)); 8163348Sbinkertn@umich.edu return (T*)data; 8173348Sbinkertn@umich.edu } 8182566SN/A 8195735Snate@binkert.org /** 8205735Snate@binkert.org * return the value of what is pointed to in the packet. 8215735Snate@binkert.org */ 8222566SN/A template <typename T> 8232592SN/A T get(); 8242566SN/A 8255735Snate@binkert.org /** 8265735Snate@binkert.org * set the value in the data pointer to v. 8275735Snate@binkert.org */ 8282566SN/A template <typename T> 8292592SN/A void set(T v); 8302566SN/A 8313348Sbinkertn@umich.edu /** 8324626Sstever@eecs.umich.edu * Copy data into the packet from the provided pointer. 8334626Sstever@eecs.umich.edu */ 8345735Snate@binkert.org void 8355735Snate@binkert.org setData(uint8_t *p) 8364626Sstever@eecs.umich.edu { 8377691SAli.Saidi@ARM.com if (p != getPtr<uint8_t>()) 8387691SAli.Saidi@ARM.com std::memcpy(getPtr<uint8_t>(), p, getSize()); 8394626Sstever@eecs.umich.edu } 8404626Sstever@eecs.umich.edu 8414626Sstever@eecs.umich.edu /** 8424626Sstever@eecs.umich.edu * Copy data into the packet from the provided block pointer, 8434626Sstever@eecs.umich.edu * which is aligned to the given block size. 8444626Sstever@eecs.umich.edu */ 8455735Snate@binkert.org void 8465735Snate@binkert.org setDataFromBlock(uint8_t *blk_data, int blkSize) 8474626Sstever@eecs.umich.edu { 8484626Sstever@eecs.umich.edu setData(blk_data + getOffset(blkSize)); 8494626Sstever@eecs.umich.edu } 8504626Sstever@eecs.umich.edu 8514626Sstever@eecs.umich.edu /** 8524626Sstever@eecs.umich.edu * Copy data from the packet to the provided block pointer, which 8534626Sstever@eecs.umich.edu * is aligned to the given block size. 8544626Sstever@eecs.umich.edu */ 8555735Snate@binkert.org void 8565735Snate@binkert.org writeData(uint8_t *p) 8574626Sstever@eecs.umich.edu { 8584626Sstever@eecs.umich.edu std::memcpy(p, getPtr<uint8_t>(), getSize()); 8594626Sstever@eecs.umich.edu } 8604626Sstever@eecs.umich.edu 8614626Sstever@eecs.umich.edu /** 8624626Sstever@eecs.umich.edu * Copy data from the packet to the memory at the provided pointer. 8634626Sstever@eecs.umich.edu */ 8645735Snate@binkert.org void 8655735Snate@binkert.org writeDataToBlock(uint8_t *blk_data, int blkSize) 8664626Sstever@eecs.umich.edu { 8674626Sstever@eecs.umich.edu writeData(blk_data + getOffset(blkSize)); 8684626Sstever@eecs.umich.edu } 8694626Sstever@eecs.umich.edu 8704626Sstever@eecs.umich.edu /** 8713348Sbinkertn@umich.edu * delete the data pointed to in the data pointer. Ok to call to 8723348Sbinkertn@umich.edu * matter how data was allocted. 8733348Sbinkertn@umich.edu */ 8745735Snate@binkert.org void 8755735Snate@binkert.org deleteData() 8765735Snate@binkert.org { 8775764Snate@binkert.org if (flags.isSet(ARRAY_DATA)) 8785735Snate@binkert.org delete [] data; 8795764Snate@binkert.org else if (flags.isSet(DYNAMIC_DATA)) 8805735Snate@binkert.org delete data; 8815735Snate@binkert.org 8825735Snate@binkert.org flags.clear(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA); 8835735Snate@binkert.org data = NULL; 8845735Snate@binkert.org } 8852566SN/A 8862566SN/A /** If there isn't data in the packet, allocate some. */ 8875735Snate@binkert.org void 8885735Snate@binkert.org allocate() 8895735Snate@binkert.org { 8905735Snate@binkert.org if (data) { 8915764Snate@binkert.org assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA)); 8925745Snate@binkert.org return; 8935735Snate@binkert.org } 8945745Snate@binkert.org 8955764Snate@binkert.org assert(flags.noneSet(STATIC_DATA|DYNAMIC_DATA)); 8965745Snate@binkert.org flags.set(DYNAMIC_DATA|ARRAY_DATA); 8975745Snate@binkert.org data = new uint8_t[getSize()]; 8985735Snate@binkert.org } 8995735Snate@binkert.org 9004626Sstever@eecs.umich.edu /** 9014626Sstever@eecs.umich.edu * Check a functional request against a memory value represented 9024626Sstever@eecs.umich.edu * by a base/size pair and an associated data array. If the 9034626Sstever@eecs.umich.edu * functional request is a read, it may be satisfied by the memory 9044626Sstever@eecs.umich.edu * value. If the functional request is a write, it may update the 9054626Sstever@eecs.umich.edu * memory value. 9064626Sstever@eecs.umich.edu */ 90710028SGiacomo.Gabrielli@arm.com bool checkFunctional(Printable *obj, Addr base, bool is_secure, int size, 90810028SGiacomo.Gabrielli@arm.com uint8_t *data); 9094626Sstever@eecs.umich.edu 9104626Sstever@eecs.umich.edu /** 9114626Sstever@eecs.umich.edu * Check a functional request against a memory value stored in 9125315Sstever@gmail.com * another packet (i.e. an in-transit request or response). 9134626Sstever@eecs.umich.edu */ 9145735Snate@binkert.org bool 9155735Snate@binkert.org checkFunctional(PacketPtr other) 9165735Snate@binkert.org { 9175735Snate@binkert.org uint8_t *data = other->hasData() ? other->getPtr<uint8_t>() : NULL; 91810028SGiacomo.Gabrielli@arm.com return checkFunctional(other, other->getAddr(), other->isSecure(), 91910028SGiacomo.Gabrielli@arm.com other->getSize(), data); 9204626Sstever@eecs.umich.edu } 9215314Sstever@gmail.com 9225315Sstever@gmail.com /** 9235315Sstever@gmail.com * Push label for PrintReq (safe to call unconditionally). 9245315Sstever@gmail.com */ 9255735Snate@binkert.org void 9265735Snate@binkert.org pushLabel(const std::string &lbl) 9275735Snate@binkert.org { 9285735Snate@binkert.org if (isPrint()) 9295735Snate@binkert.org safe_cast<PrintReqState*>(senderState)->pushLabel(lbl); 9305314Sstever@gmail.com } 9315314Sstever@gmail.com 9325315Sstever@gmail.com /** 9335315Sstever@gmail.com * Pop label for PrintReq (safe to call unconditionally). 9345315Sstever@gmail.com */ 9355735Snate@binkert.org void 9365735Snate@binkert.org popLabel() 9375735Snate@binkert.org { 9385735Snate@binkert.org if (isPrint()) 9395735Snate@binkert.org safe_cast<PrintReqState*>(senderState)->popLabel(); 9405314Sstever@gmail.com } 9415314Sstever@gmail.com 9425314Sstever@gmail.com void print(std::ostream &o, int verbosity = 0, 9435314Sstever@gmail.com const std::string &prefix = "") const; 9449663Suri.wiener@arm.com 9459663Suri.wiener@arm.com /** 9469663Suri.wiener@arm.com * A no-args wrapper of print(std::ostream...) 9479663Suri.wiener@arm.com * meant to be invoked from DPRINTFs 9489663Suri.wiener@arm.com * avoiding string overheads in fast mode 9499663Suri.wiener@arm.com * @return string with the request's type and start<->end addresses 9509663Suri.wiener@arm.com */ 9519663Suri.wiener@arm.com std::string print() const; 9522381SN/A}; 9532381SN/A 9542381SN/A#endif //__MEM_PACKET_HH 955