abstract_mem.cc revision 12749
12391SN/A/* 212218Snikos.nikoleris@arm.com * Copyright (c) 2010-2012,2017 ARM Limited 37733SN/A * All rights reserved 47733SN/A * 57733SN/A * The license below extends only to copyright in the software and shall 67733SN/A * not be construed as granting a license to any other intellectual 77733SN/A * property including but not limited to intellectual property relating 87733SN/A * to a hardware implementation of the functionality of the software 97733SN/A * licensed hereunder. You may use the software subject to the license 107733SN/A * terms below provided that you ensure that this notice is replicated 117733SN/A * unmodified and in its entirety in all distributions of the software, 127733SN/A * modified or unmodified, in source code or in binary form. 137733SN/A * 142391SN/A * Copyright (c) 2001-2005 The Regents of The University of Michigan 152391SN/A * All rights reserved. 162391SN/A * 172391SN/A * Redistribution and use in source and binary forms, with or without 182391SN/A * modification, are permitted provided that the following conditions are 192391SN/A * met: redistributions of source code must retain the above copyright 202391SN/A * notice, this list of conditions and the following disclaimer; 212391SN/A * redistributions in binary form must reproduce the above copyright 222391SN/A * notice, this list of conditions and the following disclaimer in the 232391SN/A * documentation and/or other materials provided with the distribution; 242391SN/A * neither the name of the copyright holders nor the names of its 252391SN/A * contributors may be used to endorse or promote products derived from 262391SN/A * this software without specific prior written permission. 272391SN/A * 282391SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 292391SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 302391SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 312391SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 322391SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 332391SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 342391SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 352391SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 362391SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 372391SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 382391SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392665SN/A * 402665SN/A * Authors: Ron Dreslinski 412914SN/A * Ali Saidi 428931Sandreas.hansson@arm.com * Andreas Hansson 432391SN/A */ 442391SN/A 4511793Sbrandon.potter@amd.com#include "mem/abstract_mem.hh" 4611793Sbrandon.potter@amd.com 4710466Sandreas.hansson@arm.com#include <vector> 4810466Sandreas.hansson@arm.com 4912218Snikos.nikoleris@arm.com#include "arch/locked_mem.hh" 5010102Sali.saidi@arm.com#include "cpu/base.hh" 5110102Sali.saidi@arm.com#include "cpu/thread_context.hh" 528232SN/A#include "debug/LLSC.hh" 538232SN/A#include "debug/MemoryAccess.hh" 543879SN/A#include "mem/packet_access.hh" 559053Sdam.sunwoo@arm.com#include "sim/system.hh" 562394SN/A 572391SN/Ausing namespace std; 582391SN/A 598931Sandreas.hansson@arm.comAbstractMemory::AbstractMemory(const Params *p) : 608931Sandreas.hansson@arm.com MemObject(p), range(params()->range), pmemAddr(NULL), 619053Sdam.sunwoo@arm.com confTableReported(p->conf_table_reported), inAddrMap(p->in_addr_map), 6211614Sdavid.j.hashe@gmail.com kvmMap(p->kvm_map), _system(NULL) 632391SN/A{ 6410466Sandreas.hansson@arm.com} 6510466Sandreas.hansson@arm.com 6610466Sandreas.hansson@arm.comvoid 6710466Sandreas.hansson@arm.comAbstractMemory::init() 6810466Sandreas.hansson@arm.com{ 6910466Sandreas.hansson@arm.com assert(system()); 7010466Sandreas.hansson@arm.com 7110466Sandreas.hansson@arm.com if (size() % _system->getPageBytes() != 0) 722391SN/A panic("Memory Size not divisible by page size\n"); 732391SN/A} 742391SN/A 759293Sandreas.hansson@arm.comvoid 769293Sandreas.hansson@arm.comAbstractMemory::setBackingStore(uint8_t* pmem_addr) 772391SN/A{ 789293Sandreas.hansson@arm.com pmemAddr = pmem_addr; 792391SN/A} 802391SN/A 818719SN/Avoid 828931Sandreas.hansson@arm.comAbstractMemory::regStats() 838719SN/A{ 8411522Sstephan.diestelhorst@arm.com MemObject::regStats(); 8511522Sstephan.diestelhorst@arm.com 868719SN/A using namespace Stats; 878719SN/A 889053Sdam.sunwoo@arm.com assert(system()); 899053Sdam.sunwoo@arm.com 908719SN/A bytesRead 919053Sdam.sunwoo@arm.com .init(system()->maxMasters()) 928719SN/A .name(name() + ".bytes_read") 938719SN/A .desc("Number of bytes read from this memory") 949053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 958719SN/A ; 969053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 979053Sdam.sunwoo@arm.com bytesRead.subname(i, system()->getMasterName(i)); 989053Sdam.sunwoo@arm.com } 998719SN/A bytesInstRead 1009053Sdam.sunwoo@arm.com .init(system()->maxMasters()) 1018719SN/A .name(name() + ".bytes_inst_read") 1028719SN/A .desc("Number of instructions bytes read from this memory") 1039053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1048719SN/A ; 1059053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1069053Sdam.sunwoo@arm.com bytesInstRead.subname(i, system()->getMasterName(i)); 1079053Sdam.sunwoo@arm.com } 1088719SN/A bytesWritten 1099053Sdam.sunwoo@arm.com .init(system()->maxMasters()) 1108719SN/A .name(name() + ".bytes_written") 1118719SN/A .desc("Number of bytes written to this memory") 1129053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1138719SN/A ; 1149053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1159053Sdam.sunwoo@arm.com bytesWritten.subname(i, system()->getMasterName(i)); 1169053Sdam.sunwoo@arm.com } 1178719SN/A numReads 1189053Sdam.sunwoo@arm.com .init(system()->maxMasters()) 1198719SN/A .name(name() + ".num_reads") 1208719SN/A .desc("Number of read requests responded to by this memory") 1219053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1228719SN/A ; 1239053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1249053Sdam.sunwoo@arm.com numReads.subname(i, system()->getMasterName(i)); 1259053Sdam.sunwoo@arm.com } 1268719SN/A numWrites 1279053Sdam.sunwoo@arm.com .init(system()->maxMasters()) 1288719SN/A .name(name() + ".num_writes") 1298719SN/A .desc("Number of write requests responded to by this memory") 1309053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1318719SN/A ; 1329053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1339053Sdam.sunwoo@arm.com numWrites.subname(i, system()->getMasterName(i)); 1349053Sdam.sunwoo@arm.com } 1358719SN/A numOther 1369053Sdam.sunwoo@arm.com .init(system()->maxMasters()) 1378719SN/A .name(name() + ".num_other") 1388719SN/A .desc("Number of other requests responded to by this memory") 1399053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1408719SN/A ; 1419053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1429053Sdam.sunwoo@arm.com numOther.subname(i, system()->getMasterName(i)); 1439053Sdam.sunwoo@arm.com } 1448719SN/A bwRead 1458719SN/A .name(name() + ".bw_read") 1468719SN/A .desc("Total read bandwidth from this memory (bytes/s)") 1478719SN/A .precision(0) 1488719SN/A .prereq(bytesRead) 1499053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1508719SN/A ; 1519053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1529053Sdam.sunwoo@arm.com bwRead.subname(i, system()->getMasterName(i)); 1539053Sdam.sunwoo@arm.com } 1549053Sdam.sunwoo@arm.com 1558719SN/A bwInstRead 1568719SN/A .name(name() + ".bw_inst_read") 1578719SN/A .desc("Instruction read bandwidth from this memory (bytes/s)") 1588719SN/A .precision(0) 1598719SN/A .prereq(bytesInstRead) 1609053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1618719SN/A ; 1629053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1639053Sdam.sunwoo@arm.com bwInstRead.subname(i, system()->getMasterName(i)); 1649053Sdam.sunwoo@arm.com } 1658719SN/A bwWrite 1668719SN/A .name(name() + ".bw_write") 1678719SN/A .desc("Write bandwidth from this memory (bytes/s)") 1688719SN/A .precision(0) 1698719SN/A .prereq(bytesWritten) 1709053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1718719SN/A ; 1729053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1739053Sdam.sunwoo@arm.com bwWrite.subname(i, system()->getMasterName(i)); 1749053Sdam.sunwoo@arm.com } 1758719SN/A bwTotal 1768719SN/A .name(name() + ".bw_total") 1778719SN/A .desc("Total bandwidth to/from this memory (bytes/s)") 1788719SN/A .precision(0) 1798719SN/A .prereq(bwTotal) 1809053Sdam.sunwoo@arm.com .flags(total | nozero | nonan) 1818719SN/A ; 1829053Sdam.sunwoo@arm.com for (int i = 0; i < system()->maxMasters(); i++) { 1839053Sdam.sunwoo@arm.com bwTotal.subname(i, system()->getMasterName(i)); 1849053Sdam.sunwoo@arm.com } 1858719SN/A bwRead = bytesRead / simSeconds; 1868719SN/A bwInstRead = bytesInstRead / simSeconds; 1878719SN/A bwWrite = bytesWritten / simSeconds; 1888719SN/A bwTotal = (bytesRead + bytesWritten) / simSeconds; 1898719SN/A} 1908719SN/A 1919235Sandreas.hansson@arm.comAddrRange 1929098Sandreas.hansson@arm.comAbstractMemory::getAddrRange() const 1932408SN/A{ 1948931Sandreas.hansson@arm.com return range; 1952408SN/A} 1962408SN/A 1973170SN/A// Add load-locked to tracking list. Should only be called if the 1986076SN/A// operation is a load and the LLSC flag is set. 1993170SN/Avoid 2008931Sandreas.hansson@arm.comAbstractMemory::trackLoadLocked(PacketPtr pkt) 2013170SN/A{ 20212749Sgiacomo.travaglini@arm.com const RequestPtr &req = pkt->req; 2033170SN/A Addr paddr = LockedAddr::mask(req->getPaddr()); 2043170SN/A 2053170SN/A // first we check if we already have a locked addr for this 2063170SN/A // xc. Since each xc only gets one, we just update the 2073170SN/A // existing record with the new address. 2083170SN/A list<LockedAddr>::iterator i; 2093170SN/A 2103170SN/A for (i = lockedAddrList.begin(); i != lockedAddrList.end(); ++i) { 2113170SN/A if (i->matchesContext(req)) { 2125714SN/A DPRINTF(LLSC, "Modifying lock record: context %d addr %#x\n", 2135714SN/A req->contextId(), paddr); 2143170SN/A i->addr = paddr; 2153170SN/A return; 2163170SN/A } 2173170SN/A } 2183170SN/A 2193170SN/A // no record for this xc: need to allocate a new one 2205714SN/A DPRINTF(LLSC, "Adding lock record: context %d addr %#x\n", 2215714SN/A req->contextId(), paddr); 2223170SN/A lockedAddrList.push_front(LockedAddr(req)); 2233170SN/A} 2243170SN/A 2253170SN/A 2263170SN/A// Called on *writes* only... both regular stores and 2273170SN/A// store-conditional operations. Check for conventional stores which 2283170SN/A// conflict with locked addresses, and for success/failure of store 2293170SN/A// conditionals. 2303170SN/Abool 2318931Sandreas.hansson@arm.comAbstractMemory::checkLockedAddrList(PacketPtr pkt) 2323170SN/A{ 23312749Sgiacomo.travaglini@arm.com const RequestPtr &req = pkt->req; 2343170SN/A Addr paddr = LockedAddr::mask(req->getPaddr()); 2356102SN/A bool isLLSC = pkt->isLLSC(); 2363170SN/A 2373170SN/A // Initialize return value. Non-conditional stores always 2383170SN/A // succeed. Assume conditional stores will fail until proven 2393170SN/A // otherwise. 2409080Smatt.evans@arm.com bool allowStore = !isLLSC; 2413170SN/A 2429080Smatt.evans@arm.com // Iterate over list. Note that there could be multiple matching records, 2439080Smatt.evans@arm.com // as more than one context could have done a load locked to this location. 2449080Smatt.evans@arm.com // Only remove records when we succeed in finding a record for (xc, addr); 2459080Smatt.evans@arm.com // then, remove all records with this address. Failed store-conditionals do 2469080Smatt.evans@arm.com // not blow unrelated reservations. 2473170SN/A list<LockedAddr>::iterator i = lockedAddrList.begin(); 2483170SN/A 2499080Smatt.evans@arm.com if (isLLSC) { 2509080Smatt.evans@arm.com while (i != lockedAddrList.end()) { 2519080Smatt.evans@arm.com if (i->addr == paddr && i->matchesContext(req)) { 2529080Smatt.evans@arm.com // it's a store conditional, and as far as the memory system can 2539080Smatt.evans@arm.com // tell, the requesting context's lock is still valid. 2545714SN/A DPRINTF(LLSC, "StCond success: context %d addr %#x\n", 2555714SN/A req->contextId(), paddr); 2569080Smatt.evans@arm.com allowStore = true; 2579080Smatt.evans@arm.com break; 2583170SN/A } 2599080Smatt.evans@arm.com // If we didn't find a match, keep searching! Someone else may well 2609080Smatt.evans@arm.com // have a reservation on this line here but we may find ours in just 2619080Smatt.evans@arm.com // a little while. 2629080Smatt.evans@arm.com i++; 2633170SN/A } 2649080Smatt.evans@arm.com req->setExtraData(allowStore ? 1 : 0); 2659080Smatt.evans@arm.com } 2669080Smatt.evans@arm.com // LLSCs that succeeded AND non-LLSC stores both fall into here: 2679080Smatt.evans@arm.com if (allowStore) { 2689080Smatt.evans@arm.com // We write address paddr. However, there may be several entries with a 2699080Smatt.evans@arm.com // reservation on this address (for other contextIds) and they must all 2709080Smatt.evans@arm.com // be removed. 2719080Smatt.evans@arm.com i = lockedAddrList.begin(); 2729080Smatt.evans@arm.com while (i != lockedAddrList.end()) { 2739080Smatt.evans@arm.com if (i->addr == paddr) { 2749080Smatt.evans@arm.com DPRINTF(LLSC, "Erasing lock record: context %d addr %#x\n", 2759080Smatt.evans@arm.com i->contextId, paddr); 27612218Snikos.nikoleris@arm.com ContextID owner_cid = i->contextId; 27712218Snikos.nikoleris@arm.com ContextID requester_cid = pkt->req->contextId(); 27812218Snikos.nikoleris@arm.com if (owner_cid != requester_cid) { 27912218Snikos.nikoleris@arm.com ThreadContext* ctx = system()->getThreadContext(owner_cid); 28012218Snikos.nikoleris@arm.com TheISA::globalClearExclusive(ctx); 28112218Snikos.nikoleris@arm.com } 2829080Smatt.evans@arm.com i = lockedAddrList.erase(i); 2839080Smatt.evans@arm.com } else { 2849080Smatt.evans@arm.com i++; 2859080Smatt.evans@arm.com } 2863170SN/A } 2873170SN/A } 2883170SN/A 2899080Smatt.evans@arm.com return allowStore; 2903170SN/A} 2913170SN/A 2924626SN/A 2934626SN/A#if TRACING_ON 2944626SN/A 2959931SAli.Saidi@ARM.com#define CASE(A, T) \ 2969931SAli.Saidi@ARM.com case sizeof(T): \ 2979931SAli.Saidi@ARM.com DPRINTF(MemoryAccess,"%s from %s of size %i on address 0x%x data " \ 2989931SAli.Saidi@ARM.com "0x%x %c\n", A, system()->getMasterName(pkt->req->masterId()),\ 2999931SAli.Saidi@ARM.com pkt->getSize(), pkt->getAddr(), pkt->get<T>(), \ 3009931SAli.Saidi@ARM.com pkt->req->isUncacheable() ? 'U' : 'C'); \ 3014626SN/A break 3024626SN/A 3034626SN/A 3044626SN/A#define TRACE_PACKET(A) \ 3054626SN/A do { \ 3064626SN/A switch (pkt->getSize()) { \ 3074626SN/A CASE(A, uint64_t); \ 3084626SN/A CASE(A, uint32_t); \ 3094626SN/A CASE(A, uint16_t); \ 3104626SN/A CASE(A, uint8_t); \ 3114626SN/A default: \ 3129931SAli.Saidi@ARM.com DPRINTF(MemoryAccess, "%s from %s of size %i on address 0x%x %c\n",\ 3139931SAli.Saidi@ARM.com A, system()->getMasterName(pkt->req->masterId()), \ 3149931SAli.Saidi@ARM.com pkt->getSize(), pkt->getAddr(), \ 3159931SAli.Saidi@ARM.com pkt->req->isUncacheable() ? 'U' : 'C'); \ 31610563Sandreas.hansson@arm.com DDUMP(MemoryAccess, pkt->getConstPtr<uint8_t>(), pkt->getSize()); \ 3179931SAli.Saidi@ARM.com } \ 3184626SN/A } while (0) 3194626SN/A 3204626SN/A#else 3214626SN/A 3224626SN/A#define TRACE_PACKET(A) 3234626SN/A 3244626SN/A#endif 3254626SN/A 3268931Sandreas.hansson@arm.comvoid 3278931Sandreas.hansson@arm.comAbstractMemory::access(PacketPtr pkt) 3282413SN/A{ 32911284Sandreas.hansson@arm.com if (pkt->cacheResponding()) { 33011284Sandreas.hansson@arm.com DPRINTF(MemoryAccess, "Cache responding to %#llx: not responding\n", 3314626SN/A pkt->getAddr()); 3328931Sandreas.hansson@arm.com return; 3333175SN/A } 3344626SN/A 33511199Sandreas.hansson@arm.com if (pkt->cmd == MemCmd::CleanEvict || pkt->cmd == MemCmd::WritebackClean) { 33610883Sali.jafri@arm.com DPRINTF(MemoryAccess, "CleanEvict on 0x%x: not responding\n", 33710883Sali.jafri@arm.com pkt->getAddr()); 33810883Sali.jafri@arm.com return; 33910883Sali.jafri@arm.com } 34010883Sali.jafri@arm.com 34110883Sali.jafri@arm.com assert(AddrRange(pkt->getAddr(), 34210883Sali.jafri@arm.com pkt->getAddr() + (pkt->getSize() - 1)).isSubset(range)); 34310883Sali.jafri@arm.com 3449405Sandreas.hansson@arm.com uint8_t *hostAddr = pmemAddr + pkt->getAddr() - range.start(); 3454626SN/A 3464626SN/A if (pkt->cmd == MemCmd::SwapReq) { 34711306Santhony.gutierrez@amd.com if (pkt->isAtomicOp()) { 34811306Santhony.gutierrez@amd.com if (pmemAddr) { 34911306Santhony.gutierrez@amd.com memcpy(pkt->getPtr<uint8_t>(), hostAddr, pkt->getSize()); 35011306Santhony.gutierrez@amd.com (*(pkt->getAtomicOp()))(hostAddr); 35111306Santhony.gutierrez@amd.com } 35211306Santhony.gutierrez@amd.com } else { 35311306Santhony.gutierrez@amd.com std::vector<uint8_t> overwrite_val(pkt->getSize()); 35411306Santhony.gutierrez@amd.com uint64_t condition_val64; 35511306Santhony.gutierrez@amd.com uint32_t condition_val32; 3564040SN/A 35711306Santhony.gutierrez@amd.com if (!pmemAddr) 35811306Santhony.gutierrez@amd.com panic("Swap only works if there is real memory (i.e. null=False)"); 3594040SN/A 36011306Santhony.gutierrez@amd.com bool overwrite_mem = true; 36111306Santhony.gutierrez@amd.com // keep a copy of our possible write value, and copy what is at the 36211306Santhony.gutierrez@amd.com // memory address into the packet 36311306Santhony.gutierrez@amd.com std::memcpy(&overwrite_val[0], pkt->getConstPtr<uint8_t>(), 36411306Santhony.gutierrez@amd.com pkt->getSize()); 36511306Santhony.gutierrez@amd.com std::memcpy(pkt->getPtr<uint8_t>(), hostAddr, pkt->getSize()); 3664040SN/A 36711306Santhony.gutierrez@amd.com if (pkt->req->isCondSwap()) { 36811306Santhony.gutierrez@amd.com if (pkt->getSize() == sizeof(uint64_t)) { 36911306Santhony.gutierrez@amd.com condition_val64 = pkt->req->getExtraData(); 37011306Santhony.gutierrez@amd.com overwrite_mem = !std::memcmp(&condition_val64, hostAddr, 37111306Santhony.gutierrez@amd.com sizeof(uint64_t)); 37211306Santhony.gutierrez@amd.com } else if (pkt->getSize() == sizeof(uint32_t)) { 37311306Santhony.gutierrez@amd.com condition_val32 = (uint32_t)pkt->req->getExtraData(); 37411306Santhony.gutierrez@amd.com overwrite_mem = !std::memcmp(&condition_val32, hostAddr, 37511306Santhony.gutierrez@amd.com sizeof(uint32_t)); 37611306Santhony.gutierrez@amd.com } else 37711306Santhony.gutierrez@amd.com panic("Invalid size for conditional read/write\n"); 37811306Santhony.gutierrez@amd.com } 37911306Santhony.gutierrez@amd.com 38011306Santhony.gutierrez@amd.com if (overwrite_mem) 38111306Santhony.gutierrez@amd.com std::memcpy(hostAddr, &overwrite_val[0], pkt->getSize()); 38211306Santhony.gutierrez@amd.com 38311306Santhony.gutierrez@amd.com assert(!pkt->req->isInstFetch()); 38411306Santhony.gutierrez@amd.com TRACE_PACKET("Read/Write"); 38511306Santhony.gutierrez@amd.com numOther[pkt->req->masterId()]++; 3864040SN/A } 3874626SN/A } else if (pkt->isRead()) { 3884626SN/A assert(!pkt->isWrite()); 3896102SN/A if (pkt->isLLSC()) { 39012218Snikos.nikoleris@arm.com assert(!pkt->fromCache()); 39112218Snikos.nikoleris@arm.com // if the packet is not coming from a cache then we have 39212218Snikos.nikoleris@arm.com // to do the LL/SC tracking here 3934626SN/A trackLoadLocked(pkt); 3944040SN/A } 3955477SN/A if (pmemAddr) 3965477SN/A memcpy(pkt->getPtr<uint8_t>(), hostAddr, pkt->getSize()); 3976429SN/A TRACE_PACKET(pkt->req->isInstFetch() ? "IFetch" : "Read"); 3989053Sdam.sunwoo@arm.com numReads[pkt->req->masterId()]++; 3999053Sdam.sunwoo@arm.com bytesRead[pkt->req->masterId()] += pkt->getSize(); 4008719SN/A if (pkt->req->isInstFetch()) 4019053Sdam.sunwoo@arm.com bytesInstRead[pkt->req->masterId()] += pkt->getSize(); 40212354Snikos.nikoleris@arm.com } else if (pkt->isInvalidate() || pkt->isClean()) { 40312354Snikos.nikoleris@arm.com assert(!pkt->isWrite()); 40412354Snikos.nikoleris@arm.com // in a fastmem system invalidating and/or cleaning packets 40512354Snikos.nikoleris@arm.com // can be seen due to cache maintenance requests 40612354Snikos.nikoleris@arm.com 40710583SCurtis.Dunham@arm.com // no need to do anything 4084626SN/A } else if (pkt->isWrite()) { 4094626SN/A if (writeOK(pkt)) { 4109663Suri.wiener@arm.com if (pmemAddr) { 41110563Sandreas.hansson@arm.com memcpy(hostAddr, pkt->getConstPtr<uint8_t>(), pkt->getSize()); 41211653SBrad.Beckmann@amd.com DPRINTF(MemoryAccess, "%s wrote %i bytes to address %x\n", 4139663Suri.wiener@arm.com __func__, pkt->getSize(), pkt->getAddr()); 4149663Suri.wiener@arm.com } 4156429SN/A assert(!pkt->req->isInstFetch()); 4164626SN/A TRACE_PACKET("Write"); 4179053Sdam.sunwoo@arm.com numWrites[pkt->req->masterId()]++; 4189053Sdam.sunwoo@arm.com bytesWritten[pkt->req->masterId()] += pkt->getSize(); 4194626SN/A } 4204040SN/A } else { 42112354Snikos.nikoleris@arm.com panic("Unexpected packet %s", pkt->print()); 4222413SN/A } 4232420SN/A 4244626SN/A if (pkt->needsResponse()) { 4258931Sandreas.hansson@arm.com pkt->makeResponse(); 4264626SN/A } 4272413SN/A} 4282413SN/A 4298931Sandreas.hansson@arm.comvoid 4308931Sandreas.hansson@arm.comAbstractMemory::functionalAccess(PacketPtr pkt) 4318931Sandreas.hansson@arm.com{ 4329405Sandreas.hansson@arm.com assert(AddrRange(pkt->getAddr(), 4339405Sandreas.hansson@arm.com pkt->getAddr() + pkt->getSize() - 1).isSubset(range)); 4344626SN/A 4359405Sandreas.hansson@arm.com uint8_t *hostAddr = pmemAddr + pkt->getAddr() - range.start(); 4364626SN/A 4375314SN/A if (pkt->isRead()) { 4385477SN/A if (pmemAddr) 4395477SN/A memcpy(pkt->getPtr<uint8_t>(), hostAddr, pkt->getSize()); 4404626SN/A TRACE_PACKET("Read"); 4418931Sandreas.hansson@arm.com pkt->makeResponse(); 4425314SN/A } else if (pkt->isWrite()) { 4435477SN/A if (pmemAddr) 44410563Sandreas.hansson@arm.com memcpy(hostAddr, pkt->getConstPtr<uint8_t>(), pkt->getSize()); 4454626SN/A TRACE_PACKET("Write"); 4468931Sandreas.hansson@arm.com pkt->makeResponse(); 4475314SN/A } else if (pkt->isPrint()) { 4485315SN/A Packet::PrintReqState *prs = 4495315SN/A dynamic_cast<Packet::PrintReqState*>(pkt->senderState); 4508992SAli.Saidi@ARM.com assert(prs); 4515315SN/A // Need to call printLabels() explicitly since we're not going 4525315SN/A // through printObj(). 4535314SN/A prs->printLabels(); 4545315SN/A // Right now we just print the single byte at the specified address. 4555314SN/A ccprintf(prs->os, "%s%#x\n", prs->curPrefix(), *hostAddr); 4564626SN/A } else { 4578931Sandreas.hansson@arm.com panic("AbstractMemory: unimplemented functional command %s", 4584626SN/A pkt->cmdString()); 4594626SN/A } 4604490SN/A} 461