physical.cc revision 9565
12391SN/A/* 28931Sandreas.hansson@arm.com * Copyright (c) 2012 ARM Limited 37733SAli.Saidi@ARM.com * All rights reserved 47733SAli.Saidi@ARM.com * 57733SAli.Saidi@ARM.com * The license below extends only to copyright in the software and shall 67733SAli.Saidi@ARM.com * not be construed as granting a license to any other intellectual 77733SAli.Saidi@ARM.com * property including but not limited to intellectual property relating 87733SAli.Saidi@ARM.com * to a hardware implementation of the functionality of the software 97733SAli.Saidi@ARM.com * licensed hereunder. You may use the software subject to the license 107733SAli.Saidi@ARM.com * terms below provided that you ensure that this notice is replicated 117733SAli.Saidi@ARM.com * unmodified and in its entirety in all distributions of the software, 127733SAli.Saidi@ARM.com * modified or unmodified, in source code or in binary form. 137733SAli.Saidi@ARM.com * 142391SN/A * Redistribution and use in source and binary forms, with or without 152391SN/A * modification, are permitted provided that the following conditions are 162391SN/A * met: redistributions of source code must retain the above copyright 172391SN/A * notice, this list of conditions and the following disclaimer; 182391SN/A * redistributions in binary form must reproduce the above copyright 192391SN/A * notice, this list of conditions and the following disclaimer in the 202391SN/A * documentation and/or other materials provided with the distribution; 212391SN/A * neither the name of the copyright holders nor the names of its 222391SN/A * contributors may be used to endorse or promote products derived from 232391SN/A * this software without specific prior written permission. 242391SN/A * 252391SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 262391SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 272391SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 282391SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 292391SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 302391SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 312391SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 322391SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 332391SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 342391SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 352391SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 362665Ssaidi@eecs.umich.edu * 378931Sandreas.hansson@arm.com * Authors: Andreas Hansson 382391SN/A */ 392391SN/A 409293Sandreas.hansson@arm.com#include <sys/mman.h> 419293Sandreas.hansson@arm.com#include <sys/types.h> 429293Sandreas.hansson@arm.com#include <sys/user.h> 439293Sandreas.hansson@arm.com#include <fcntl.h> 449293Sandreas.hansson@arm.com#include <unistd.h> 459293Sandreas.hansson@arm.com#include <zlib.h> 469293Sandreas.hansson@arm.com 479293Sandreas.hansson@arm.com#include <cerrno> 489293Sandreas.hansson@arm.com#include <climits> 499293Sandreas.hansson@arm.com#include <cstdio> 509293Sandreas.hansson@arm.com#include <iostream> 519293Sandreas.hansson@arm.com#include <string> 529293Sandreas.hansson@arm.com 539356Snilay@cs.wisc.edu#include "base/trace.hh" 548931Sandreas.hansson@arm.com#include "debug/BusAddrRanges.hh" 559293Sandreas.hansson@arm.com#include "debug/Checkpoint.hh" 569293Sandreas.hansson@arm.com#include "mem/abstract_mem.hh" 572394SN/A#include "mem/physical.hh" 582394SN/A 592391SN/Ausing namespace std; 602391SN/A 619293Sandreas.hansson@arm.comPhysicalMemory::PhysicalMemory(const string& _name, 629293Sandreas.hansson@arm.com const vector<AbstractMemory*>& _memories) : 639293Sandreas.hansson@arm.com _name(_name), size(0) 642391SN/A{ 659293Sandreas.hansson@arm.com // add the memories from the system to the address map as 669293Sandreas.hansson@arm.com // appropriate 678931Sandreas.hansson@arm.com for (vector<AbstractMemory*>::const_iterator m = _memories.begin(); 688931Sandreas.hansson@arm.com m != _memories.end(); ++m) { 698931Sandreas.hansson@arm.com // only add the memory if it is part of the global address map 708931Sandreas.hansson@arm.com if ((*m)->isInAddrMap()) { 718931Sandreas.hansson@arm.com memories.push_back(*m); 722391SN/A 738931Sandreas.hansson@arm.com // calculate the total size once and for all 748931Sandreas.hansson@arm.com size += (*m)->size(); 758931Sandreas.hansson@arm.com 768931Sandreas.hansson@arm.com // add the range to our interval tree and make sure it does not 778931Sandreas.hansson@arm.com // intersect an existing range 788931Sandreas.hansson@arm.com if (addrMap.insert((*m)->getAddrRange(), *m) == addrMap.end()) 798931Sandreas.hansson@arm.com fatal("Memory address range for %s is overlapping\n", 808931Sandreas.hansson@arm.com (*m)->name()); 819293Sandreas.hansson@arm.com } else { 829293Sandreas.hansson@arm.com DPRINTF(BusAddrRanges, 839293Sandreas.hansson@arm.com "Skipping memory %s that is not in global address map\n", 849293Sandreas.hansson@arm.com (*m)->name()); 859293Sandreas.hansson@arm.com // this type of memory is used e.g. as reference memory by 869293Sandreas.hansson@arm.com // Ruby, and they also needs a backing store, but should 879293Sandreas.hansson@arm.com // not be part of the global address map 889293Sandreas.hansson@arm.com 899293Sandreas.hansson@arm.com // simply do it independently, also note that this kind of 909293Sandreas.hansson@arm.com // memories are allowed to overlap in the logic address 919293Sandreas.hansson@arm.com // map 929293Sandreas.hansson@arm.com vector<AbstractMemory*> unmapped_mems; 939293Sandreas.hansson@arm.com unmapped_mems.push_back(*m); 949293Sandreas.hansson@arm.com createBackingStore((*m)->getAddrRange(), unmapped_mems); 958931Sandreas.hansson@arm.com } 969293Sandreas.hansson@arm.com } 979293Sandreas.hansson@arm.com 989404Sandreas.hansson@arm.com // iterate over the increasing addresses and chunks of contigous 999404Sandreas.hansson@arm.com // space to be mapped to backing store, also remember what 1009404Sandreas.hansson@arm.com // memories constitute the range so we can go and find out if we 1019404Sandreas.hansson@arm.com // have to init their parts to zero 1029565Sandreas.hansson@arm.com vector<AddrRange> intlv_ranges; 1039293Sandreas.hansson@arm.com vector<AbstractMemory*> curr_memories; 1049293Sandreas.hansson@arm.com for (AddrRangeMap<AbstractMemory*>::const_iterator r = addrMap.begin(); 1059293Sandreas.hansson@arm.com r != addrMap.end(); ++r) { 1069293Sandreas.hansson@arm.com // simply skip past all memories that are null and hence do 1079293Sandreas.hansson@arm.com // not need any backing store 1089293Sandreas.hansson@arm.com if (!r->second->isNull()) { 1099565Sandreas.hansson@arm.com // if the range is interleaved then save it for now 1109565Sandreas.hansson@arm.com if (r->first.interleaved()) { 1119565Sandreas.hansson@arm.com // if we already got interleaved ranges that are not 1129565Sandreas.hansson@arm.com // part of the same range, then first do a merge 1139565Sandreas.hansson@arm.com // before we add the new one 1149565Sandreas.hansson@arm.com if (!intlv_ranges.empty() && 1159565Sandreas.hansson@arm.com !intlv_ranges.back().mergesWith(r->first)) { 1169565Sandreas.hansson@arm.com AddrRange merged_range(intlv_ranges); 1179565Sandreas.hansson@arm.com createBackingStore(merged_range, curr_memories); 1189565Sandreas.hansson@arm.com intlv_ranges.clear(); 1199565Sandreas.hansson@arm.com curr_memories.clear(); 1209565Sandreas.hansson@arm.com } 1219565Sandreas.hansson@arm.com intlv_ranges.push_back(r->first); 1229565Sandreas.hansson@arm.com curr_memories.push_back(r->second); 1239565Sandreas.hansson@arm.com } else { 1249565Sandreas.hansson@arm.com vector<AbstractMemory*> single_memory; 1259565Sandreas.hansson@arm.com single_memory.push_back(r->second); 1269565Sandreas.hansson@arm.com createBackingStore(r->first, single_memory); 1279565Sandreas.hansson@arm.com } 1289293Sandreas.hansson@arm.com } 1299293Sandreas.hansson@arm.com } 1309565Sandreas.hansson@arm.com 1319565Sandreas.hansson@arm.com // if there is still interleaved ranges waiting to be merged, go 1329565Sandreas.hansson@arm.com // ahead and do it 1339565Sandreas.hansson@arm.com if (!intlv_ranges.empty()) { 1349565Sandreas.hansson@arm.com AddrRange merged_range(intlv_ranges); 1359565Sandreas.hansson@arm.com createBackingStore(merged_range, curr_memories); 1369565Sandreas.hansson@arm.com } 1379293Sandreas.hansson@arm.com} 1389293Sandreas.hansson@arm.com 1399293Sandreas.hansson@arm.comvoid 1409293Sandreas.hansson@arm.comPhysicalMemory::createBackingStore(AddrRange range, 1419293Sandreas.hansson@arm.com const vector<AbstractMemory*>& _memories) 1429293Sandreas.hansson@arm.com{ 1439411Sandreas.hansson@arm.com if (range.interleaved()) 1449411Sandreas.hansson@arm.com panic("Cannot create backing store for interleaved range %s\n", 1459411Sandreas.hansson@arm.com range.to_string()); 1469411Sandreas.hansson@arm.com 1479293Sandreas.hansson@arm.com // perform the actual mmap 1489411Sandreas.hansson@arm.com DPRINTF(BusAddrRanges, "Creating backing store for range %s with size %d\n", 1499411Sandreas.hansson@arm.com range.to_string(), range.size()); 1509293Sandreas.hansson@arm.com int map_flags = MAP_ANON | MAP_PRIVATE; 1519293Sandreas.hansson@arm.com uint8_t* pmem = (uint8_t*) mmap(NULL, range.size(), 1529293Sandreas.hansson@arm.com PROT_READ | PROT_WRITE, 1539293Sandreas.hansson@arm.com map_flags, -1, 0); 1549293Sandreas.hansson@arm.com 1559293Sandreas.hansson@arm.com if (pmem == (uint8_t*) MAP_FAILED) { 1569293Sandreas.hansson@arm.com perror("mmap"); 1579405Sandreas.hansson@arm.com fatal("Could not mmap %d bytes for range %s!\n", range.size(), 1589405Sandreas.hansson@arm.com range.to_string()); 1599293Sandreas.hansson@arm.com } 1609293Sandreas.hansson@arm.com 1619293Sandreas.hansson@arm.com // remember this backing store so we can checkpoint it and unmap 1629293Sandreas.hansson@arm.com // it appropriately 1639293Sandreas.hansson@arm.com backingStore.push_back(make_pair(range, pmem)); 1649293Sandreas.hansson@arm.com 1659404Sandreas.hansson@arm.com // count how many of the memories are to be zero initialized so we 1669404Sandreas.hansson@arm.com // can see if some but not all have this parameter set 1679404Sandreas.hansson@arm.com uint32_t init_to_zero = 0; 1689404Sandreas.hansson@arm.com 1699293Sandreas.hansson@arm.com // point the memories to their backing store, and if requested, 1709293Sandreas.hansson@arm.com // initialize the memory range to 0 1719293Sandreas.hansson@arm.com for (vector<AbstractMemory*>::const_iterator m = _memories.begin(); 1729293Sandreas.hansson@arm.com m != _memories.end(); ++m) { 1739293Sandreas.hansson@arm.com DPRINTF(BusAddrRanges, "Mapping memory %s to backing store\n", 1748931Sandreas.hansson@arm.com (*m)->name()); 1759293Sandreas.hansson@arm.com (*m)->setBackingStore(pmem); 1769293Sandreas.hansson@arm.com 1779293Sandreas.hansson@arm.com // if it should be zero, then go and make it so 1789404Sandreas.hansson@arm.com if ((*m)->initToZero()) { 1799404Sandreas.hansson@arm.com ++init_to_zero; 1809404Sandreas.hansson@arm.com } 1819404Sandreas.hansson@arm.com } 1829293Sandreas.hansson@arm.com 1839404Sandreas.hansson@arm.com if (init_to_zero != 0) { 1849404Sandreas.hansson@arm.com if (init_to_zero != _memories.size()) 1859405Sandreas.hansson@arm.com fatal("Some, but not all memories in range %s are set zero\n", 1869405Sandreas.hansson@arm.com range.to_string()); 1879404Sandreas.hansson@arm.com 1889404Sandreas.hansson@arm.com memset(pmem, 0, range.size()); 1898931Sandreas.hansson@arm.com } 1908931Sandreas.hansson@arm.com} 1918931Sandreas.hansson@arm.com 1929293Sandreas.hansson@arm.comPhysicalMemory::~PhysicalMemory() 1939293Sandreas.hansson@arm.com{ 1949293Sandreas.hansson@arm.com // unmap the backing store 1959293Sandreas.hansson@arm.com for (vector<pair<AddrRange, uint8_t*> >::iterator s = backingStore.begin(); 1969293Sandreas.hansson@arm.com s != backingStore.end(); ++s) 1979293Sandreas.hansson@arm.com munmap((char*)s->second, s->first.size()); 1989293Sandreas.hansson@arm.com} 1999293Sandreas.hansson@arm.com 2008931Sandreas.hansson@arm.combool 2018931Sandreas.hansson@arm.comPhysicalMemory::isMemAddr(Addr addr) const 2028931Sandreas.hansson@arm.com{ 2038931Sandreas.hansson@arm.com // see if the address is within the last matched range 2049405Sandreas.hansson@arm.com if (!rangeCache.contains(addr)) { 2058931Sandreas.hansson@arm.com // lookup in the interval tree 2069235Sandreas.hansson@arm.com AddrRangeMap<AbstractMemory*>::const_iterator r = addrMap.find(addr); 2078931Sandreas.hansson@arm.com if (r == addrMap.end()) { 2088931Sandreas.hansson@arm.com // not in the cache, and not in the tree 2098931Sandreas.hansson@arm.com return false; 2108931Sandreas.hansson@arm.com } 2118931Sandreas.hansson@arm.com // the range is in the tree, update the cache 2128931Sandreas.hansson@arm.com rangeCache = r->first; 2138851Sandreas.hansson@arm.com } 2148851Sandreas.hansson@arm.com 2158931Sandreas.hansson@arm.com assert(addrMap.find(addr) != addrMap.end()); 2165477Snate@binkert.org 2178931Sandreas.hansson@arm.com // either matched the cache or found in the tree 2188931Sandreas.hansson@arm.com return true; 2198931Sandreas.hansson@arm.com} 2207730SAli.Saidi@ARM.com 2218931Sandreas.hansson@arm.comAddrRangeList 2228931Sandreas.hansson@arm.comPhysicalMemory::getConfAddrRanges() const 2238931Sandreas.hansson@arm.com{ 2248931Sandreas.hansson@arm.com // this could be done once in the constructor, but since it is unlikely to 2258931Sandreas.hansson@arm.com // be called more than once the iteration should not be a problem 2268931Sandreas.hansson@arm.com AddrRangeList ranges; 2279413Sandreas.hansson@arm.com vector<AddrRange> intlv_ranges; 2289413Sandreas.hansson@arm.com for (AddrRangeMap<AbstractMemory*>::const_iterator r = addrMap.begin(); 2299413Sandreas.hansson@arm.com r != addrMap.end(); ++r) { 2309413Sandreas.hansson@arm.com if (r->second->isConfReported()) { 2319413Sandreas.hansson@arm.com // if the range is interleaved then save it for now 2329413Sandreas.hansson@arm.com if (r->first.interleaved()) { 2339413Sandreas.hansson@arm.com // if we already got interleaved ranges that are not 2349413Sandreas.hansson@arm.com // part of the same range, then first do a merge 2359413Sandreas.hansson@arm.com // before we add the new one 2369413Sandreas.hansson@arm.com if (!intlv_ranges.empty() && 2379413Sandreas.hansson@arm.com !intlv_ranges.back().mergesWith(r->first)) { 2389413Sandreas.hansson@arm.com ranges.push_back(AddrRange(intlv_ranges)); 2399413Sandreas.hansson@arm.com intlv_ranges.clear(); 2409413Sandreas.hansson@arm.com } 2419413Sandreas.hansson@arm.com intlv_ranges.push_back(r->first); 2429413Sandreas.hansson@arm.com } else { 2439413Sandreas.hansson@arm.com // keep the current range 2449413Sandreas.hansson@arm.com ranges.push_back(r->first); 2459413Sandreas.hansson@arm.com } 2468931Sandreas.hansson@arm.com } 2477730SAli.Saidi@ARM.com } 2482391SN/A 2499413Sandreas.hansson@arm.com // if there is still interleaved ranges waiting to be merged, 2509413Sandreas.hansson@arm.com // go ahead and do it 2519413Sandreas.hansson@arm.com if (!intlv_ranges.empty()) { 2529413Sandreas.hansson@arm.com ranges.push_back(AddrRange(intlv_ranges)); 2539413Sandreas.hansson@arm.com } 2549413Sandreas.hansson@arm.com 2558931Sandreas.hansson@arm.com return ranges; 2562391SN/A} 2572391SN/A 2582541SN/Avoid 2598931Sandreas.hansson@arm.comPhysicalMemory::access(PacketPtr pkt) 2602541SN/A{ 2618931Sandreas.hansson@arm.com assert(pkt->isRequest()); 2628931Sandreas.hansson@arm.com Addr addr = pkt->getAddr(); 2639235Sandreas.hansson@arm.com AddrRangeMap<AbstractMemory*>::const_iterator m = addrMap.find(addr); 2648931Sandreas.hansson@arm.com assert(m != addrMap.end()); 2658931Sandreas.hansson@arm.com m->second->access(pkt); 2662391SN/A} 2672391SN/A 2688719SAli.Saidi@ARM.comvoid 2698931Sandreas.hansson@arm.comPhysicalMemory::functionalAccess(PacketPtr pkt) 2708719SAli.Saidi@ARM.com{ 2718931Sandreas.hansson@arm.com assert(pkt->isRequest()); 2728931Sandreas.hansson@arm.com Addr addr = pkt->getAddr(); 2739235Sandreas.hansson@arm.com AddrRangeMap<AbstractMemory*>::const_iterator m = addrMap.find(addr); 2748931Sandreas.hansson@arm.com assert(m != addrMap.end()); 2758931Sandreas.hansson@arm.com m->second->functionalAccess(pkt); 2768719SAli.Saidi@ARM.com} 2779293Sandreas.hansson@arm.com 2789293Sandreas.hansson@arm.comvoid 2799293Sandreas.hansson@arm.comPhysicalMemory::serialize(ostream& os) 2809293Sandreas.hansson@arm.com{ 2819293Sandreas.hansson@arm.com // serialize all the locked addresses and their context ids 2829293Sandreas.hansson@arm.com vector<Addr> lal_addr; 2839293Sandreas.hansson@arm.com vector<int> lal_cid; 2849293Sandreas.hansson@arm.com 2859293Sandreas.hansson@arm.com for (vector<AbstractMemory*>::iterator m = memories.begin(); 2869293Sandreas.hansson@arm.com m != memories.end(); ++m) { 2879293Sandreas.hansson@arm.com const list<LockedAddr>& locked_addrs = (*m)->getLockedAddrList(); 2889293Sandreas.hansson@arm.com for (list<LockedAddr>::const_iterator l = locked_addrs.begin(); 2899293Sandreas.hansson@arm.com l != locked_addrs.end(); ++l) { 2909293Sandreas.hansson@arm.com lal_addr.push_back(l->addr); 2919293Sandreas.hansson@arm.com lal_cid.push_back(l->contextId); 2929293Sandreas.hansson@arm.com } 2939293Sandreas.hansson@arm.com } 2949293Sandreas.hansson@arm.com 2959293Sandreas.hansson@arm.com arrayParamOut(os, "lal_addr", lal_addr); 2969293Sandreas.hansson@arm.com arrayParamOut(os, "lal_cid", lal_cid); 2979293Sandreas.hansson@arm.com 2989293Sandreas.hansson@arm.com // serialize the backing stores 2999293Sandreas.hansson@arm.com unsigned int nbr_of_stores = backingStore.size(); 3009293Sandreas.hansson@arm.com SERIALIZE_SCALAR(nbr_of_stores); 3019293Sandreas.hansson@arm.com 3029293Sandreas.hansson@arm.com unsigned int store_id = 0; 3039293Sandreas.hansson@arm.com // store each backing store memory segment in a file 3049293Sandreas.hansson@arm.com for (vector<pair<AddrRange, uint8_t*> >::iterator s = backingStore.begin(); 3059293Sandreas.hansson@arm.com s != backingStore.end(); ++s) { 3069293Sandreas.hansson@arm.com nameOut(os, csprintf("%s.store%d", name(), store_id)); 3079293Sandreas.hansson@arm.com serializeStore(os, store_id++, s->first, s->second); 3089293Sandreas.hansson@arm.com } 3099293Sandreas.hansson@arm.com} 3109293Sandreas.hansson@arm.com 3119293Sandreas.hansson@arm.comvoid 3129293Sandreas.hansson@arm.comPhysicalMemory::serializeStore(ostream& os, unsigned int store_id, 3139293Sandreas.hansson@arm.com AddrRange range, uint8_t* pmem) 3149293Sandreas.hansson@arm.com{ 3159293Sandreas.hansson@arm.com // we cannot use the address range for the name as the 3169293Sandreas.hansson@arm.com // memories that are not part of the address map can overlap 3179386Sandreas.hansson@arm.com string filename = name() + ".store" + to_string(store_id) + ".pmem"; 3189293Sandreas.hansson@arm.com long range_size = range.size(); 3199293Sandreas.hansson@arm.com 3209293Sandreas.hansson@arm.com DPRINTF(Checkpoint, "Serializing physical memory %s with size %d\n", 3219293Sandreas.hansson@arm.com filename, range_size); 3229293Sandreas.hansson@arm.com 3239293Sandreas.hansson@arm.com SERIALIZE_SCALAR(store_id); 3249293Sandreas.hansson@arm.com SERIALIZE_SCALAR(filename); 3259293Sandreas.hansson@arm.com SERIALIZE_SCALAR(range_size); 3269293Sandreas.hansson@arm.com 3279293Sandreas.hansson@arm.com // write memory file 3289293Sandreas.hansson@arm.com string filepath = Checkpoint::dir() + "/" + filename.c_str(); 3299293Sandreas.hansson@arm.com int fd = creat(filepath.c_str(), 0664); 3309293Sandreas.hansson@arm.com if (fd < 0) { 3319293Sandreas.hansson@arm.com perror("creat"); 3329293Sandreas.hansson@arm.com fatal("Can't open physical memory checkpoint file '%s'\n", 3339293Sandreas.hansson@arm.com filename); 3349293Sandreas.hansson@arm.com } 3359293Sandreas.hansson@arm.com 3369293Sandreas.hansson@arm.com gzFile compressed_mem = gzdopen(fd, "wb"); 3379293Sandreas.hansson@arm.com if (compressed_mem == NULL) 3389293Sandreas.hansson@arm.com fatal("Insufficient memory to allocate compression state for %s\n", 3399293Sandreas.hansson@arm.com filename); 3409293Sandreas.hansson@arm.com 3419293Sandreas.hansson@arm.com uint64_t pass_size = 0; 3429293Sandreas.hansson@arm.com 3439293Sandreas.hansson@arm.com // gzwrite fails if (int)len < 0 (gzwrite returns int) 3449293Sandreas.hansson@arm.com for (uint64_t written = 0; written < range.size(); 3459293Sandreas.hansson@arm.com written += pass_size) { 3469293Sandreas.hansson@arm.com pass_size = (uint64_t)INT_MAX < (range.size() - written) ? 3479293Sandreas.hansson@arm.com (uint64_t)INT_MAX : (range.size() - written); 3489293Sandreas.hansson@arm.com 3499293Sandreas.hansson@arm.com if (gzwrite(compressed_mem, pmem + written, 3509293Sandreas.hansson@arm.com (unsigned int) pass_size) != (int) pass_size) { 3519293Sandreas.hansson@arm.com fatal("Write failed on physical memory checkpoint file '%s'\n", 3529293Sandreas.hansson@arm.com filename); 3539293Sandreas.hansson@arm.com } 3549293Sandreas.hansson@arm.com } 3559293Sandreas.hansson@arm.com 3569293Sandreas.hansson@arm.com // close the compressed stream and check that the exit status 3579293Sandreas.hansson@arm.com // is zero 3589293Sandreas.hansson@arm.com if (gzclose(compressed_mem)) 3599293Sandreas.hansson@arm.com fatal("Close failed on physical memory checkpoint file '%s'\n", 3609293Sandreas.hansson@arm.com filename); 3619293Sandreas.hansson@arm.com 3629293Sandreas.hansson@arm.com} 3639293Sandreas.hansson@arm.com 3649293Sandreas.hansson@arm.comvoid 3659293Sandreas.hansson@arm.comPhysicalMemory::unserialize(Checkpoint* cp, const string& section) 3669293Sandreas.hansson@arm.com{ 3679293Sandreas.hansson@arm.com // unserialize the locked addresses and map them to the 3689293Sandreas.hansson@arm.com // appropriate memory controller 3699293Sandreas.hansson@arm.com vector<Addr> lal_addr; 3709293Sandreas.hansson@arm.com vector<int> lal_cid; 3719293Sandreas.hansson@arm.com arrayParamIn(cp, section, "lal_addr", lal_addr); 3729293Sandreas.hansson@arm.com arrayParamIn(cp, section, "lal_cid", lal_cid); 3739293Sandreas.hansson@arm.com for(size_t i = 0; i < lal_addr.size(); ++i) { 3749409Sandreas.hansson@arm.com AddrRangeMap<AbstractMemory*>::const_iterator m = 3759409Sandreas.hansson@arm.com addrMap.find(lal_addr[i]); 3769293Sandreas.hansson@arm.com m->second->addLockedAddr(LockedAddr(lal_addr[i], lal_cid[i])); 3779293Sandreas.hansson@arm.com } 3789293Sandreas.hansson@arm.com 3799293Sandreas.hansson@arm.com // unserialize the backing stores 3809293Sandreas.hansson@arm.com unsigned int nbr_of_stores; 3819293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(nbr_of_stores); 3829293Sandreas.hansson@arm.com 3839293Sandreas.hansson@arm.com for (unsigned int i = 0; i < nbr_of_stores; ++i) { 3849293Sandreas.hansson@arm.com unserializeStore(cp, csprintf("%s.store%d", section, i)); 3859293Sandreas.hansson@arm.com } 3869293Sandreas.hansson@arm.com 3879293Sandreas.hansson@arm.com} 3889293Sandreas.hansson@arm.com 3899293Sandreas.hansson@arm.comvoid 3909293Sandreas.hansson@arm.comPhysicalMemory::unserializeStore(Checkpoint* cp, const string& section) 3919293Sandreas.hansson@arm.com{ 3929293Sandreas.hansson@arm.com const uint32_t chunk_size = 16384; 3939293Sandreas.hansson@arm.com 3949293Sandreas.hansson@arm.com unsigned int store_id; 3959293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(store_id); 3969293Sandreas.hansson@arm.com 3979293Sandreas.hansson@arm.com string filename; 3989293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(filename); 3999293Sandreas.hansson@arm.com string filepath = cp->cptDir + "/" + filename; 4009293Sandreas.hansson@arm.com 4019293Sandreas.hansson@arm.com // mmap memoryfile 4029293Sandreas.hansson@arm.com int fd = open(filepath.c_str(), O_RDONLY); 4039293Sandreas.hansson@arm.com if (fd < 0) { 4049293Sandreas.hansson@arm.com perror("open"); 4059293Sandreas.hansson@arm.com fatal("Can't open physical memory checkpoint file '%s'", filename); 4069293Sandreas.hansson@arm.com } 4079293Sandreas.hansson@arm.com 4089293Sandreas.hansson@arm.com gzFile compressed_mem = gzdopen(fd, "rb"); 4099293Sandreas.hansson@arm.com if (compressed_mem == NULL) 4109293Sandreas.hansson@arm.com fatal("Insufficient memory to allocate compression state for %s\n", 4119293Sandreas.hansson@arm.com filename); 4129293Sandreas.hansson@arm.com 4139293Sandreas.hansson@arm.com uint8_t* pmem = backingStore[store_id].second; 4149293Sandreas.hansson@arm.com AddrRange range = backingStore[store_id].first; 4159293Sandreas.hansson@arm.com 4169293Sandreas.hansson@arm.com // unmap file that was mmapped in the constructor, this is 4179293Sandreas.hansson@arm.com // done here to make sure that gzip and open don't muck with 4189293Sandreas.hansson@arm.com // our nice large space of memory before we reallocate it 4199293Sandreas.hansson@arm.com munmap((char*) pmem, range.size()); 4209293Sandreas.hansson@arm.com 4219293Sandreas.hansson@arm.com long range_size; 4229293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(range_size); 4239293Sandreas.hansson@arm.com 4249293Sandreas.hansson@arm.com DPRINTF(Checkpoint, "Unserializing physical memory %s with size %d\n", 4259293Sandreas.hansson@arm.com filename, range_size); 4269293Sandreas.hansson@arm.com 4279293Sandreas.hansson@arm.com if (range_size != range.size()) 4289293Sandreas.hansson@arm.com fatal("Memory range size has changed! Saw %lld, expected %lld\n", 4299293Sandreas.hansson@arm.com range_size, range.size()); 4309293Sandreas.hansson@arm.com 4319293Sandreas.hansson@arm.com pmem = (uint8_t*) mmap(NULL, range.size(), PROT_READ | PROT_WRITE, 4329293Sandreas.hansson@arm.com MAP_ANON | MAP_PRIVATE, -1, 0); 4339293Sandreas.hansson@arm.com 4349293Sandreas.hansson@arm.com if (pmem == (void*) MAP_FAILED) { 4359293Sandreas.hansson@arm.com perror("mmap"); 4369293Sandreas.hansson@arm.com fatal("Could not mmap physical memory!\n"); 4379293Sandreas.hansson@arm.com } 4389293Sandreas.hansson@arm.com 4399293Sandreas.hansson@arm.com uint64_t curr_size = 0; 4409293Sandreas.hansson@arm.com long* temp_page = new long[chunk_size]; 4419293Sandreas.hansson@arm.com long* pmem_current; 4429293Sandreas.hansson@arm.com uint32_t bytes_read; 4439293Sandreas.hansson@arm.com while (curr_size < range.size()) { 4449293Sandreas.hansson@arm.com bytes_read = gzread(compressed_mem, temp_page, chunk_size); 4459293Sandreas.hansson@arm.com if (bytes_read == 0) 4469293Sandreas.hansson@arm.com break; 4479293Sandreas.hansson@arm.com 4489293Sandreas.hansson@arm.com assert(bytes_read % sizeof(long) == 0); 4499293Sandreas.hansson@arm.com 4509293Sandreas.hansson@arm.com for (uint32_t x = 0; x < bytes_read / sizeof(long); x++) { 4519293Sandreas.hansson@arm.com // Only copy bytes that are non-zero, so we don't give 4529293Sandreas.hansson@arm.com // the VM system hell 4539293Sandreas.hansson@arm.com if (*(temp_page + x) != 0) { 4549293Sandreas.hansson@arm.com pmem_current = (long*)(pmem + curr_size + x * sizeof(long)); 4559293Sandreas.hansson@arm.com *pmem_current = *(temp_page + x); 4569293Sandreas.hansson@arm.com } 4579293Sandreas.hansson@arm.com } 4589293Sandreas.hansson@arm.com curr_size += bytes_read; 4599293Sandreas.hansson@arm.com } 4609293Sandreas.hansson@arm.com 4619293Sandreas.hansson@arm.com delete[] temp_page; 4629293Sandreas.hansson@arm.com 4639293Sandreas.hansson@arm.com if (gzclose(compressed_mem)) 4649293Sandreas.hansson@arm.com fatal("Close failed on physical memory checkpoint file '%s'\n", 4659293Sandreas.hansson@arm.com filename); 4669293Sandreas.hansson@arm.com} 467