/* * Copyright (c) 2003-2005 The Regents of The University of Michigan * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer; * redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution; * neither the name of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Authors: Erik Hallnor * Nathan Binkert */ /** * @file * Simobject instatiation of caches. */ #include // Must be included first to determine which caches we want #include "mem/config/cache.hh" #include "mem/config/prefetch.hh" #include "mem/cache/base_cache.hh" #include "mem/cache/cache.hh" #include "mem/bus.hh" #include "mem/cache/coherence/coherence_protocol.hh" #include "sim/builder.hh" // Tag Templates #if defined(USE_CACHE_LRU) #include "mem/cache/tags/lru.hh" #endif #if defined(USE_CACHE_FALRU) #include "mem/cache/tags/fa_lru.hh" #endif #if defined(USE_CACHE_IIC) #include "mem/cache/tags/iic.hh" #endif #if defined(USE_CACHE_SPLIT) #include "mem/cache/tags/split.hh" #endif #if defined(USE_CACHE_SPLIT_LIFO) #include "mem/cache/tags/split_lifo.hh" #endif // Compression Templates #include "base/compression/null_compression.hh" #include "base/compression/lzss_compression.hh" // Coherence Templates #include "mem/cache/coherence/simple_coherence.hh" //Prefetcher Headers #if defined(USE_GHB) #include "mem/cache/prefetch/ghb_prefetcher.hh" #endif #if defined(USE_TAGGED) #include "mem/cache/prefetch/tagged_prefetcher.hh" #endif #if defined(USE_STRIDED) #include "mem/cache/prefetch/stride_prefetcher.hh" #endif using namespace std; using namespace TheISA; #ifndef DOXYGEN_SHOULD_SKIP_THIS BEGIN_DECLARE_SIM_OBJECT_PARAMS(BaseCache) Param size; Param assoc; Param block_size; Param latency; Param mshrs; Param tgts_per_mshr; Param write_buffers; Param prioritizeRequests; SimObjectParam protocol; Param trace_addr; Param hash_delay; #if defined(USE_CACHE_IIC) SimObjectParam repl; #endif Param compressed_bus; Param store_compressed; Param adaptive_compression; Param compression_latency; Param subblock_size; Param max_miss_count; VectorParam > addr_range; // SimObjectParam mem_trace; Param split; Param split_size; Param lifo; Param two_queue; Param prefetch_miss; Param prefetch_access; Param prefetcher_size; Param prefetch_past_page; Param prefetch_serial_squash; Param prefetch_latency; Param prefetch_degree; Param prefetch_policy; Param prefetch_cache_check_push; Param prefetch_use_cpu_id; Param prefetch_data_accesses_only; END_DECLARE_SIM_OBJECT_PARAMS(BaseCache) BEGIN_INIT_SIM_OBJECT_PARAMS(BaseCache) INIT_PARAM(size, "capacity in bytes"), INIT_PARAM(assoc, "associativity"), INIT_PARAM(block_size, "block size in bytes"), INIT_PARAM(latency, "hit latency in CPU cycles"), INIT_PARAM(mshrs, "number of MSHRs (max outstanding requests)"), INIT_PARAM(tgts_per_mshr, "max number of accesses per MSHR"), INIT_PARAM_DFLT(write_buffers, "number of write buffers", 8), INIT_PARAM_DFLT(prioritizeRequests, "always service demand misses first", false), INIT_PARAM_DFLT(protocol, "coherence protocol to use in the cache", NULL), INIT_PARAM_DFLT(trace_addr, "address to trace", 0), INIT_PARAM_DFLT(hash_delay, "time in cycles of hash access",1), #if defined(USE_CACHE_IIC) INIT_PARAM_DFLT(repl, "replacement policy",NULL), #endif INIT_PARAM_DFLT(compressed_bus, "This cache connects to a compressed memory", false), INIT_PARAM_DFLT(store_compressed, "Store compressed data in the cache", false), INIT_PARAM_DFLT(adaptive_compression, "Use an adaptive compression scheme", false), INIT_PARAM_DFLT(compression_latency, "Latency in cycles of compression algorithm", 0), INIT_PARAM_DFLT(subblock_size, "Size of subblock in IIC used for compression", 0), INIT_PARAM_DFLT(max_miss_count, "The number of misses to handle before calling exit", 0), INIT_PARAM_DFLT(addr_range, "The address range in bytes", vector >(1,RangeIn((Addr)0, MaxAddr))), // INIT_PARAM_DFLT(mem_trace, "Memory trace to write accesses to", NULL), INIT_PARAM_DFLT(split, "Whether this is a partitioned cache", false), INIT_PARAM_DFLT(split_size, "the number of \"ways\" belonging to the LRU partition", 0), INIT_PARAM_DFLT(lifo, "whether you are using a LIFO repl. policy", false), INIT_PARAM_DFLT(two_queue, "whether the lifo should have two queue replacement", false), INIT_PARAM_DFLT(prefetch_miss, "wheter you are using the hardware prefetcher from Miss stream", false), INIT_PARAM_DFLT(prefetch_access, "wheter you are using the hardware prefetcher from Access stream", false), INIT_PARAM_DFLT(prefetcher_size, "Number of entries in the harware prefetch queue", 100), INIT_PARAM_DFLT(prefetch_past_page, "Allow prefetches to cross virtual page boundaries", false), INIT_PARAM_DFLT(prefetch_serial_squash, "Squash prefetches with a later time on a subsequent miss", false), INIT_PARAM_DFLT(prefetch_latency, "Latency of the prefetcher", 10), INIT_PARAM_DFLT(prefetch_degree, "Degree of the prefetch depth", 1), INIT_PARAM_DFLT(prefetch_policy, "Type of prefetcher to use", "none"), INIT_PARAM_DFLT(prefetch_cache_check_push, "Check if in cash on push or pop of prefetch queue", true), INIT_PARAM_DFLT(prefetch_use_cpu_id, "Use the CPU ID to seperate calculations of prefetches", true), INIT_PARAM_DFLT(prefetch_data_accesses_only, "Only prefetch on data not on instruction accesses", false) END_INIT_SIM_OBJECT_PARAMS(BaseCache) #define BUILD_CACHE(TAGS, tags, c) \ do { \ BasePrefetcher *pf; \ if (pf_policy == "tagged") { \ BUILD_TAGGED_PREFETCHER(TAGS); \ } \ else if (pf_policy == "stride") { \ BUILD_STRIDED_PREFETCHER(TAGS); \ } \ else if (pf_policy == "ghb") { \ BUILD_GHB_PREFETCHER(TAGS); \ } \ else { \ BUILD_NULL_PREFETCHER(TAGS); \ } \ Cache::Params params(tags, coh, base_params, \ pf, prefetch_access, latency, \ true, \ prefetch_miss); \ Cache *retval = \ new Cache(getInstanceName(), params); \ return retval; \ } while (0) #define BUILD_CACHE_PANIC(x) do { \ panic("%s not compiled into M5", x); \ } while (0) #define BUILD_COMPRESSED_CACHE(TAGS, tags, c) \ do { \ CompressionAlgorithm *compAlg; \ if (compressed_bus || store_compressed) { \ compAlg = new LZSSCompression(); \ } else { \ compAlg = new NullCompression(); \ } \ BUILD_CACHE(TAGS, tags, c); \ } while (0) #if defined(USE_CACHE_FALRU) #define BUILD_FALRU_CACHE(c) do { \ FALRU *tags = new FALRU(block_size, size, latency); \ BUILD_COMPRESSED_CACHE(FALRU, tags, c); \ } while (0) #else #define BUILD_FALRU_CACHE(c) BUILD_CACHE_PANIC("falru cache") #endif #if defined(USE_CACHE_LRU) #define BUILD_LRU_CACHE(c) do { \ LRU *tags = new LRU(numSets, block_size, assoc, latency); \ BUILD_COMPRESSED_CACHE(LRU, tags, c); \ } while (0) #else #define BUILD_LRU_CACHE(c) BUILD_CACHE_PANIC("lru cache") #endif #if defined(USE_CACHE_SPLIT) #define BUILD_SPLIT_CACHE(c) do { \ Split *tags = new Split(numSets, block_size, assoc, split_size, lifo, \ two_queue, latency); \ BUILD_COMPRESSED_CACHE(Split, tags, c); \ } while (0) #else #define BUILD_SPLIT_CACHE(c) BUILD_CACHE_PANIC("split cache") #endif #if defined(USE_CACHE_SPLIT_LIFO) #define BUILD_SPLIT_LIFO_CACHE(c) do { \ SplitLIFO *tags = new SplitLIFO(block_size, size, assoc, \ latency, two_queue, -1); \ BUILD_COMPRESSED_CACHE(SplitLIFO, tags, c); \ } while (0) #else #define BUILD_SPLIT_LIFO_CACHE(c) BUILD_CACHE_PANIC("lifo cache") #endif #if defined(USE_CACHE_IIC) #define BUILD_IIC_CACHE(c) do { \ IIC *tags = new IIC(iic_params); \ BUILD_COMPRESSED_CACHE(IIC, tags, c); \ } while (0) #else #define BUILD_IIC_CACHE(c) BUILD_CACHE_PANIC("iic") #endif #define BUILD_CACHES(c) do { \ if (repl == NULL) { \ if (numSets == 1) { \ BUILD_FALRU_CACHE(c); \ } else { \ if (split == true) { \ BUILD_SPLIT_CACHE(c); \ } else if (lifo == true) { \ BUILD_SPLIT_LIFO_CACHE(c); \ } else { \ BUILD_LRU_CACHE(c); \ } \ } \ } else { \ BUILD_IIC_CACHE(c); \ } \ } while (0) #define BUILD_COHERENCE(b) do { \ } while (0) #if defined(USE_TAGGED) #define BUILD_TAGGED_PREFETCHER(t) \ pf = new TaggedPrefetcher(prefetcher_size, \ !prefetch_past_page, \ prefetch_serial_squash, \ prefetch_cache_check_push, \ prefetch_data_accesses_only, \ prefetch_latency, \ prefetch_degree) #else #define BUILD_TAGGED_PREFETCHER(t) BUILD_CACHE_PANIC("Tagged Prefetcher") #endif #if defined(USE_STRIDED) #define BUILD_STRIDED_PREFETCHER(t) \ pf = new StridePrefetcher(prefetcher_size, \ !prefetch_past_page, \ prefetch_serial_squash, \ prefetch_cache_check_push, \ prefetch_data_accesses_only, \ prefetch_latency, \ prefetch_degree, \ prefetch_use_cpu_id) #else #define BUILD_STRIDED_PREFETCHER(t) BUILD_CACHE_PANIC("Stride Prefetcher") #endif #if defined(USE_GHB) #define BUILD_GHB_PREFETCHER(t) \ pf = new GHBPrefetcher(prefetcher_size, \ !prefetch_past_page, \ prefetch_serial_squash, \ prefetch_cache_check_push, \ prefetch_data_accesses_only, \ prefetch_latency, \ prefetch_degree, \ prefetch_use_cpu_id) #else #define BUILD_GHB_PREFETCHER(t) BUILD_CACHE_PANIC("GHB Prefetcher") #endif #if defined(USE_TAGGED) #define BUILD_NULL_PREFETCHER(t) \ pf = new TaggedPrefetcher(prefetcher_size, \ !prefetch_past_page, \ prefetch_serial_squash, \ prefetch_cache_check_push, \ prefetch_data_accesses_only, \ prefetch_latency, \ prefetch_degree) #else #define BUILD_NULL_PREFETCHER(t) BUILD_CACHE_PANIC("NULL Prefetcher (uses Tagged)") #endif CREATE_SIM_OBJECT(BaseCache) { string name = getInstanceName(); int numSets = size / (assoc * block_size); string pf_policy = prefetch_policy; if (subblock_size == 0) { subblock_size = block_size; } // Build BaseCache param object BaseCache::Params base_params(latency, block_size, mshrs, tgts_per_mshr, write_buffers, max_miss_count); //Warnings about prefetcher policy if (pf_policy == "none" && (prefetch_miss || prefetch_access)) { panic("With no prefetcher, you shouldn't prefetch from" " either miss or access stream\n"); } if ((pf_policy == "tagged" || pf_policy == "stride" || pf_policy == "ghb") && !(prefetch_miss || prefetch_access)) { warn("With this prefetcher you should chose a prefetch" " stream (miss or access)\nNo Prefetching will occur\n"); } if ((pf_policy == "tagged" || pf_policy == "stride" || pf_policy == "ghb") && prefetch_miss && prefetch_access) { panic("Can't do prefetches from both miss and access" " stream\n"); } if (pf_policy != "tagged" && pf_policy != "stride" && pf_policy != "ghb" && pf_policy != "none") { panic("Unrecognized form of a prefetcher: %s, try using" "['none','stride','tagged','ghb']\n", pf_policy); } #if defined(USE_CACHE_IIC) // Build IIC params IIC::Params iic_params; iic_params.size = size; iic_params.numSets = numSets; iic_params.blkSize = block_size; iic_params.assoc = assoc; iic_params.hashDelay = hash_delay; iic_params.hitLatency = latency; iic_params.rp = repl; iic_params.subblockSize = subblock_size; #else const void *repl = NULL; #endif SimpleCoherence *coh = new SimpleCoherence(protocol); BUILD_CACHES(SimpleCoherence); return NULL; } REGISTER_SIM_OBJECT("BaseCache", BaseCache) #endif //DOXYGEN_SHOULD_SKIP_THIS