1/*************************************************************************************** 2* Copyright (c) 2020-2021 Institute of Computing Technology, Chinese Academy of Sciences 3* Copyright (c) 2020-2021 Peng Cheng Laboratory 4* 5* XiangShan is licensed under Mulan PSL v2. 6* You can use this software according to the terms and conditions of the Mulan PSL v2. 7* You may obtain a copy of Mulan PSL v2 at: 8* http://license.coscl.org.cn/MulanPSL2 9* 10* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, 11* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, 12* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. 13* 14* See the Mulan PSL v2 for more details. 15***************************************************************************************/ 16 17package xiangshan 18 19import chipsalliance.rocketchip.config.{Field, Parameters} 20import chisel3._ 21import chisel3.util._ 22import xiangshan.backend.exu._ 23import xiangshan.backend.dispatch.DispatchParameters 24import xiangshan.cache.DCacheParameters 25import xiangshan.cache.prefetch._ 26import xiangshan.frontend.{BIM, BasePredictor, BranchPredictionResp, FTB, FakePredictor, MicroBTB, RAS, Tage, ITTage, Tage_SC} 27import xiangshan.frontend.icache.ICacheParameters 28import xiangshan.cache.mmu.{L2TLBParameters, TLBParameters} 29import freechips.rocketchip.diplomacy.AddressSet 30import system.SoCParamsKey 31import huancun._ 32import huancun.debug._ 33import scala.math.min 34 35case object XSTileKey extends Field[Seq[XSCoreParameters]] 36 37case object XSCoreParamsKey extends Field[XSCoreParameters] 38 39case class XSCoreParameters 40( 41 HasPrefetch: Boolean = false, 42 HartId: Int = 0, 43 XLEN: Int = 64, 44 HasMExtension: Boolean = true, 45 HasCExtension: Boolean = true, 46 HasDiv: Boolean = true, 47 HasICache: Boolean = true, 48 HasDCache: Boolean = true, 49 AddrBits: Int = 64, 50 VAddrBits: Int = 39, 51 HasFPU: Boolean = true, 52 HasCustomCSRCacheOp: Boolean = true, 53 FetchWidth: Int = 8, 54 AsidLength: Int = 16, 55 EnableBPU: Boolean = true, 56 EnableBPD: Boolean = true, 57 EnableRAS: Boolean = true, 58 EnableLB: Boolean = false, 59 EnableLoop: Boolean = true, 60 EnableSC: Boolean = true, 61 EnbaleTlbDebug: Boolean = false, 62 EnableJal: Boolean = false, 63 EnableUBTB: Boolean = true, 64 HistoryLength: Int = 256, 65 PathHistoryLength: Int = 16, 66 BtbSize: Int = 2048, 67 JbtacSize: Int = 1024, 68 JbtacBanks: Int = 8, 69 RasSize: Int = 32, 70 CacheLineSize: Int = 512, 71 UBtbWays: Int = 16, 72 BtbWays: Int = 2, 73 TageTableInfos: Seq[Tuple3[Int,Int,Int]] = 74 // Sets Hist Tag 75 Seq(( 128*8, 2, 7), 76 ( 128*8, 4, 7), 77 ( 256*8, 8, 8), 78 ( 256*8, 16, 8), 79 ( 128*8, 32, 9), 80 ( 128*8, 65, 9)), 81 TageBanks: Int = 2, 82 ITTageTableInfos: Seq[Tuple3[Int,Int,Int]] = 83 // Sets Hist Tag 84 Seq(( 512, 0, 0), 85 ( 256, 4, 8), 86 ( 256, 8, 8), 87 ( 512, 12, 8), 88 ( 512, 16, 8), 89 ( 512, 32, 8)), 90 SCNRows: Int = 1024, 91 SCNTables: Int = 6, 92 SCCtrBits: Int = 6, 93 numBr: Int = 2, 94 branchPredictor: Function2[BranchPredictionResp, Parameters, Tuple2[Seq[BasePredictor], BranchPredictionResp]] = 95 ((resp_in: BranchPredictionResp, p: Parameters) => { 96 // val loop = Module(new LoopPredictor) 97 // val tage = (if(EnableBPD) { if (EnableSC) Module(new Tage_SC) 98 // else Module(new Tage) } 99 // else { Module(new FakeTage) }) 100 val ftb = Module(new FTB()(p)) 101 val ubtb = Module(new MicroBTB()(p)) 102 val bim = Module(new BIM()(p)) 103 val tage = Module(new Tage_SC()(p)) 104 val ras = Module(new RAS()(p)) 105 val ittage = Module(new ITTage()(p)) 106 // val tage = Module(new Tage()(p)) 107 // val fake = Module(new FakePredictor()(p)) 108 109 // val preds = Seq(loop, tage, btb, ubtb, bim) 110 val preds = Seq(bim, ubtb, tage, ftb, ittage, ras) 111 preds.map(_.io := DontCare) 112 113 // ubtb.io.resp_in(0) := resp_in 114 // bim.io.resp_in(0) := ubtb.io.resp 115 // btb.io.resp_in(0) := bim.io.resp 116 // tage.io.resp_in(0) := btb.io.resp 117 // loop.io.resp_in(0) := tage.io.resp 118 bim.io.in.bits.resp_in(0) := resp_in 119 ubtb.io.in.bits.resp_in(0) := bim.io.out.resp 120 tage.io.in.bits.resp_in(0) := ubtb.io.out.resp 121 ftb.io.in.bits.resp_in(0) := tage.io.out.resp 122 ittage.io.in.bits.resp_in(0) := ftb.io.out.resp 123 ras.io.in.bits.resp_in(0) := ittage.io.out.resp 124 125 (preds, ras.io.out.resp) 126 }), 127 IBufSize: Int = 48, 128 DecodeWidth: Int = 6, 129 RenameWidth: Int = 6, 130 CommitWidth: Int = 6, 131 FtqSize: Int = 64, 132 EnableLoadFastWakeUp: Boolean = true, // NOTE: not supported now, make it false 133 IssQueSize: Int = 16, 134 NRPhyRegs: Int = 192, 135 LoadQueueSize: Int = 80, 136 StoreQueueSize: Int = 64, 137 RobSize: Int = 256, 138 dpParams: DispatchParameters = DispatchParameters( 139 IntDqSize = 16, 140 FpDqSize = 16, 141 LsDqSize = 16, 142 IntDqDeqWidth = 4, 143 FpDqDeqWidth = 4, 144 LsDqDeqWidth = 4 145 ), 146 exuParameters: ExuParameters = ExuParameters( 147 JmpCnt = 1, 148 AluCnt = 4, 149 MulCnt = 0, 150 MduCnt = 2, 151 FmacCnt = 4, 152 FmiscCnt = 2, 153 FmiscDivSqrtCnt = 0, 154 LduCnt = 2, 155 StuCnt = 2 156 ), 157 LoadPipelineWidth: Int = 2, 158 StorePipelineWidth: Int = 2, 159 StoreBufferSize: Int = 16, 160 StoreBufferThreshold: Int = 7, 161 EnableLoadToLoadForward: Boolean = false, 162 EnableFastForward: Boolean = false, 163 EnableLdVioCheckAfterReset: Boolean = true, 164 EnableSoftPrefetchAfterReset: Boolean = true, 165 EnableCacheErrorAfterReset: Boolean = true, 166 RefillSize: Int = 512, 167 MMUAsidLen: Int = 16, // max is 16, 0 is not supported now 168 itlbParameters: TLBParameters = TLBParameters( 169 name = "itlb", 170 fetchi = true, 171 useDmode = false, 172 sameCycle = false, 173 missSameCycle = true, 174 normalNWays = 32, 175 normalReplacer = Some("plru"), 176 superNWays = 4, 177 superReplacer = Some("plru"), 178 shouldBlock = true 179 ), 180 ldtlbParameters: TLBParameters = TLBParameters( 181 name = "ldtlb", 182 normalNSets = 128, 183 normalNWays = 1, 184 normalAssociative = "sa", 185 normalReplacer = Some("setplru"), 186 superNWays = 8, 187 normalAsVictim = true, 188 outReplace = true, 189 partialStaticPMP = true, 190 saveLevel = true 191 ), 192 sttlbParameters: TLBParameters = TLBParameters( 193 name = "sttlb", 194 normalNSets = 128, 195 normalNWays = 1, 196 normalAssociative = "sa", 197 normalReplacer = Some("setplru"), 198 superNWays = 8, 199 normalAsVictim = true, 200 outReplace = true, 201 partialStaticPMP = true, 202 saveLevel = true 203 ), 204 refillBothTlb: Boolean = false, 205 btlbParameters: TLBParameters = TLBParameters( 206 name = "btlb", 207 normalNSets = 1, 208 normalNWays = 64, 209 superNWays = 4, 210 ), 211 l2tlbParameters: L2TLBParameters = L2TLBParameters(), 212 NumPerfCounters: Int = 16, 213 icacheParameters: ICacheParameters = ICacheParameters( 214 tagECC = Some("parity"), 215 dataECC = Some("parity"), 216 replacer = Some("setplru"), 217 nMissEntries = 2, 218 nReleaseEntries = 2 219 ), 220 dcacheParametersOpt: Option[DCacheParameters] = Some(DCacheParameters( 221 tagECC = Some("secded"), 222 dataECC = Some("secded"), 223 replacer = Some("setplru"), 224 nMissEntries = 16, 225 nProbeEntries = 8, 226 nReleaseEntries = 18 227 )), 228 L2CacheParamsOpt: Option[HCCacheParameters] = Some(HCCacheParameters( 229 name = "l2", 230 level = 2, 231 ways = 8, 232 sets = 1024, // default 512KB L2 233 prefetch = Some(huancun.prefetch.BOPParameters()) 234 )), 235 L2NBanks: Int = 1, 236 usePTWRepeater: Boolean = false, 237 softPTW: Boolean = false // dpi-c debug only 238){ 239 val loadExuConfigs = Seq.fill(exuParameters.LduCnt)(LdExeUnitCfg) 240 val storeExuConfigs = Seq.fill(exuParameters.StuCnt)(StaExeUnitCfg) ++ Seq.fill(exuParameters.StuCnt)(StdExeUnitCfg) 241 242 val intExuConfigs = (Seq.fill(exuParameters.AluCnt)(AluExeUnitCfg) ++ 243 Seq.fill(exuParameters.MduCnt)(MulDivExeUnitCfg) :+ JumpCSRExeUnitCfg) 244 245 val fpExuConfigs = 246 Seq.fill(exuParameters.FmacCnt)(FmacExeUnitCfg) ++ 247 Seq.fill(exuParameters.FmiscCnt)(FmiscExeUnitCfg) 248 249 val exuConfigs: Seq[ExuConfig] = intExuConfigs ++ fpExuConfigs ++ loadExuConfigs ++ storeExuConfigs 250} 251 252case object DebugOptionsKey extends Field[DebugOptions] 253 254case class DebugOptions 255( 256 FPGAPlatform: Boolean = false, 257 EnableDifftest: Boolean = false, 258 AlwaysBasicDiff: Boolean = true, 259 EnableDebug: Boolean = false, 260 EnablePerfDebug: Boolean = true, 261 UseDRAMSim: Boolean = false 262) 263 264trait HasXSParameter { 265 266 implicit val p: Parameters 267 268 val PAddrBits = p(SoCParamsKey).PAddrBits // PAddrBits is Phyical Memory addr bits 269 270 val coreParams = p(XSCoreParamsKey) 271 val env = p(DebugOptionsKey) 272 273 val XLEN = coreParams.XLEN 274 val minFLen = 32 275 val fLen = 64 276 def xLen = XLEN 277 278 val HasMExtension = coreParams.HasMExtension 279 val HasCExtension = coreParams.HasCExtension 280 val HasDiv = coreParams.HasDiv 281 val HasIcache = coreParams.HasICache 282 val HasDcache = coreParams.HasDCache 283 val AddrBits = coreParams.AddrBits // AddrBits is used in some cases 284 val VAddrBits = coreParams.VAddrBits // VAddrBits is Virtual Memory addr bits 285 val AsidLength = coreParams.AsidLength 286 val AddrBytes = AddrBits / 8 // unused 287 val DataBits = XLEN 288 val DataBytes = DataBits / 8 289 val HasFPU = coreParams.HasFPU 290 val HasCustomCSRCacheOp = coreParams.HasCustomCSRCacheOp 291 val FetchWidth = coreParams.FetchWidth 292 val PredictWidth = FetchWidth * (if (HasCExtension) 2 else 1) 293 val EnableBPU = coreParams.EnableBPU 294 val EnableBPD = coreParams.EnableBPD // enable backing predictor(like Tage) in BPUStage3 295 val EnableRAS = coreParams.EnableRAS 296 val EnableLB = coreParams.EnableLB 297 val EnableLoop = coreParams.EnableLoop 298 val EnableSC = coreParams.EnableSC 299 val EnbaleTlbDebug = coreParams.EnbaleTlbDebug 300 val HistoryLength = coreParams.HistoryLength 301 val PathHistoryLength = coreParams.PathHistoryLength 302 val BtbSize = coreParams.BtbSize 303 // val BtbWays = 4 304 val BtbBanks = PredictWidth 305 // val BtbSets = BtbSize / BtbWays 306 val JbtacSize = coreParams.JbtacSize 307 val JbtacBanks = coreParams.JbtacBanks 308 val RasSize = coreParams.RasSize 309 310 def getBPDComponents(resp_in: BranchPredictionResp, p: Parameters) = { 311 coreParams.branchPredictor(resp_in, p) 312 } 313 val numBr = coreParams.numBr 314 val TageTableInfos = coreParams.TageTableInfos 315 316 317 val BankTageTableInfos = (0 until numBr).map(i => 318 TageTableInfos.map{ case (s, h, t) => (s/(1 << i), h, t) } 319 ) 320 val TageBanks = coreParams.TageBanks 321 val SCNRows = coreParams.SCNRows 322 val SCCtrBits = coreParams.SCCtrBits 323 val BankSCHistLens = BankTageTableInfos.map(info => 0 :: info.map{ case (_,h,_) => h}.toList) 324 val BankSCNTables = Seq.fill(numBr)(coreParams.SCNTables) 325 326 val BankSCTableInfos = (BankSCNTables zip BankSCHistLens).map { 327 case (ntable, histlens) => 328 Seq.fill(ntable)((SCNRows, SCCtrBits)) zip histlens map {case ((n, cb), h) => (n, cb, h)} 329 } 330 val ITTageTableInfos = coreParams.ITTageTableInfos 331 type FoldedHistoryInfo = Tuple2[Int, Int] 332 val foldedGHistInfos = 333 (BankTageTableInfos.flatMap(_.map{ case (nRows, h, t) => 334 if (h > 0) 335 Set((h, min(log2Ceil(nRows), h)), (h, min(h, t)), (h, min(h, t-1))) 336 else 337 Set[FoldedHistoryInfo]() 338 }.reduce(_++_)).toSet ++ 339 BankSCTableInfos.flatMap(_.map{ case (nRows, _, h) => 340 if (h > 0) 341 Set((h, min(log2Ceil(nRows/TageBanks), h))) 342 else 343 Set[FoldedHistoryInfo]() 344 }.reduce(_++_)).toSet ++ 345 ITTageTableInfos.map{ case (nRows, h, t) => 346 if (h > 0) 347 Set((h, min(log2Ceil(nRows), h)), (h, min(h, t)), (h, min(h, t-1))) 348 else 349 Set[FoldedHistoryInfo]() 350 }.reduce(_++_)).toList 351 352 val CacheLineSize = coreParams.CacheLineSize 353 val CacheLineHalfWord = CacheLineSize / 16 354 val ExtHistoryLength = HistoryLength + 64 355 val UBtbWays = coreParams.UBtbWays 356 val BtbWays = coreParams.BtbWays 357 val IBufSize = coreParams.IBufSize 358 val DecodeWidth = coreParams.DecodeWidth 359 val RenameWidth = coreParams.RenameWidth 360 val CommitWidth = coreParams.CommitWidth 361 val FtqSize = coreParams.FtqSize 362 val IssQueSize = coreParams.IssQueSize 363 val EnableLoadFastWakeUp = coreParams.EnableLoadFastWakeUp 364 val NRPhyRegs = coreParams.NRPhyRegs 365 val PhyRegIdxWidth = log2Up(NRPhyRegs) 366 val RobSize = coreParams.RobSize 367 val IntRefCounterWidth = log2Ceil(RobSize) 368 val LoadQueueSize = coreParams.LoadQueueSize 369 val StoreQueueSize = coreParams.StoreQueueSize 370 val dpParams = coreParams.dpParams 371 val exuParameters = coreParams.exuParameters 372 val NRMemReadPorts = exuParameters.LduCnt + 2 * exuParameters.StuCnt 373 val NRIntReadPorts = 2 * exuParameters.AluCnt + NRMemReadPorts 374 val NRIntWritePorts = exuParameters.AluCnt + exuParameters.MduCnt + exuParameters.LduCnt 375 val NRFpReadPorts = 3 * exuParameters.FmacCnt + exuParameters.StuCnt 376 val NRFpWritePorts = exuParameters.FpExuCnt + exuParameters.LduCnt 377 val LoadPipelineWidth = coreParams.LoadPipelineWidth 378 val StorePipelineWidth = coreParams.StorePipelineWidth 379 val StoreBufferSize = coreParams.StoreBufferSize 380 val StoreBufferThreshold = coreParams.StoreBufferThreshold 381 val EnableLoadToLoadForward = coreParams.EnableLoadToLoadForward 382 val EnableFastForward = coreParams.EnableFastForward 383 val EnableLdVioCheckAfterReset = coreParams.EnableLdVioCheckAfterReset 384 val EnableSoftPrefetchAfterReset = coreParams.EnableSoftPrefetchAfterReset 385 val EnableCacheErrorAfterReset = coreParams.EnableCacheErrorAfterReset 386 val RefillSize = coreParams.RefillSize 387 val asidLen = coreParams.MMUAsidLen 388 val BTLBWidth = coreParams.LoadPipelineWidth + coreParams.StorePipelineWidth 389 val refillBothTlb = coreParams.refillBothTlb 390 val itlbParams = coreParams.itlbParameters 391 val ldtlbParams = coreParams.ldtlbParameters 392 val sttlbParams = coreParams.sttlbParameters 393 val btlbParams = coreParams.btlbParameters 394 val l2tlbParams = coreParams.l2tlbParameters 395 val NumPerfCounters = coreParams.NumPerfCounters 396 397 val NumRs = (exuParameters.JmpCnt+1)/2 + (exuParameters.AluCnt+1)/2 + (exuParameters.MulCnt+1)/2 + 398 (exuParameters.MduCnt+1)/2 + (exuParameters.FmacCnt+1)/2 + + (exuParameters.FmiscCnt+1)/2 + 399 (exuParameters.FmiscDivSqrtCnt+1)/2 + (exuParameters.LduCnt+1)/2 + 400 ((exuParameters.StuCnt+1)/2) + ((exuParameters.StuCnt+1)/2) 401 402 val instBytes = if (HasCExtension) 2 else 4 403 val instOffsetBits = log2Ceil(instBytes) 404 405 val icacheParameters = coreParams.icacheParameters 406 val dcacheParameters = coreParams.dcacheParametersOpt.getOrElse(DCacheParameters()) 407 408 val LRSCCycles = 100 409 410 // cache hierarchy configurations 411 val l1BusDataWidth = 256 412 413 // load violation predict 414 val ResetTimeMax2Pow = 20 //1078576 415 val ResetTimeMin2Pow = 10 //1024 416 // wait table parameters 417 val WaitTableSize = 1024 418 val MemPredPCWidth = log2Up(WaitTableSize) 419 val LWTUse2BitCounter = true 420 // store set parameters 421 val SSITSize = WaitTableSize 422 val LFSTSize = 32 423 val SSIDWidth = log2Up(LFSTSize) 424 val LFSTWidth = 4 425 val StoreSetEnable = true // LWT will be disabled if SS is enabled 426 427 val loadExuConfigs = coreParams.loadExuConfigs 428 val storeExuConfigs = coreParams.storeExuConfigs 429 430 val intExuConfigs = coreParams.intExuConfigs 431 432 val fpExuConfigs = coreParams.fpExuConfigs 433 434 val exuConfigs = coreParams.exuConfigs 435 436 val PCntIncrStep: Int = 6 437 val numPCntHc: Int = 25 438 val numPCntPtw: Int = 19 439 440 val numCSRPCntFrontend = 8 441 val numCSRPCntCtrl = 8 442 val numCSRPCntLsu = 8 443 val numCSRPCntHc = 5 444} 445