xref: /XiangShan/src/main/scala/xiangshan/backend/issue/IssueBlockParams.scala (revision 44af22172d764d72860feb70b7d6aa9819594d79)
1package xiangshan.backend.issue
2
3import org.chipsalliance.cde.config.Parameters
4import chisel3._
5import chisel3.util._
6import utils.SeqUtils
7import xiangshan.backend.BackendParams
8import xiangshan.backend.Bundles._
9import xiangshan.backend.datapath.DataConfig.DataConfig
10import xiangshan.backend.datapath.WbConfig._
11import xiangshan.backend.datapath.{WakeUpConfig, WakeUpSource}
12import xiangshan.backend.exu.{ExeUnit, ExeUnitParams}
13import xiangshan.backend.fu.{FuConfig, FuType}
14import xiangshan.SelImm
15import xiangshan.backend.issue.EntryBundles.EntryDeqRespBundle
16
17case class IssueBlockParams(
18  // top down
19  private val exuParams: Seq[ExeUnitParams],
20  val numEntries       : Int,
21  numEnq               : Int,
22  numComp              : Int,
23  numDeqOutside        : Int = 0,
24  numWakeupFromOthers  : Int = 0,
25  XLEN                 : Int = 64,
26  VLEN                 : Int = 128,
27  vaddrBits            : Int = 39,
28  // calculate in scheduler
29  var idxInSchBlk      : Int = 0,
30)(
31  implicit
32  val schdType: SchedulerType,
33) {
34  var backendParam: BackendParams = null
35
36  val exuBlockParams: Seq[ExeUnitParams] = exuParams.filterNot(_.fakeUnit)
37
38  val allExuParams = exuParams
39
40  def updateIdx(idx: Int): Unit = {
41    this.idxInSchBlk = idx
42  }
43
44  def inMemSchd: Boolean = schdType == MemScheduler()
45
46  def inIntSchd: Boolean = schdType == IntScheduler()
47
48  def inVfSchd: Boolean = schdType == VfScheduler()
49
50  def isMemAddrIQ: Boolean = inMemSchd && (LduCnt > 0 || StaCnt > 0 || VlduCnt > 0 || VstuCnt > 0 || HyuCnt > 0)
51
52  def isLdAddrIQ: Boolean = inMemSchd && LduCnt > 0
53
54  def isStAddrIQ: Boolean = inMemSchd && StaCnt > 0
55
56  def isHyAddrIQ: Boolean = inMemSchd && HyuCnt > 0
57
58  def isVecLduIQ: Boolean = inMemSchd && VlduCnt > 0
59
60  def isVecStuIQ: Boolean = inMemSchd && VstuCnt > 0
61
62  def isVecMemIQ: Boolean = isVecLduIQ || isVecStuIQ
63
64  def needFeedBackSqIdx: Boolean = isVecMemIQ || isStAddrIQ
65
66  def needFeedBackLqIdx: Boolean = isVecMemIQ || isLdAddrIQ
67
68  def needLoadDependency: Boolean = exuBlockParams.map(_.needLoadDependency).reduce(_ || _)
69
70  def numExu: Int = exuBlockParams.count(!_.fakeUnit)
71
72  def numIntSrc: Int = exuBlockParams.map(_.numIntSrc).max
73
74  def numFpSrc: Int = exuBlockParams.map(_.numFpSrc).max
75
76  def numVecSrc: Int = exuBlockParams.map(_.numVecSrc).max
77
78  def numVfSrc: Int = exuBlockParams.map(_.numVfSrc).max
79
80  def numV0Src: Int = exuBlockParams.map(_.numV0Src).max
81
82  def numVlSrc: Int = exuBlockParams.map(_.numVlSrc).max
83
84  def numRegSrc: Int = exuBlockParams.map(_.numRegSrc).max
85
86  def numSrc: Int = exuBlockParams.map(_.numSrc).max
87
88  def readIntRf: Boolean = numIntSrc > 0
89
90  def readFpRf: Boolean = numFpSrc > 0
91
92  def readVecRf: Boolean = numVecSrc > 0
93
94  def readVfRf: Boolean = numVfSrc > 0
95
96  def readV0Rf: Boolean = numV0Src > 0
97
98  def readVlRf: Boolean = numVlSrc > 0
99
100  def writeIntRf: Boolean = exuBlockParams.map(_.writeIntRf).reduce(_ || _)
101
102  def writeFpRf: Boolean = exuBlockParams.map(_.writeFpRf).reduce(_ || _)
103
104  def writeVecRf: Boolean = exuBlockParams.map(_.writeVecRf).reduce(_ || _)
105
106  def writeV0Rf: Boolean = exuBlockParams.map(_.writeV0Rf).reduce(_ || _)
107
108  def writeVlRf: Boolean = exuBlockParams.map(_.writeVlRf).reduce(_ || _)
109
110  def exceptionOut: Seq[Int] = exuBlockParams.map(_.exceptionOut).reduce(_ ++ _).distinct.sorted
111
112  def hasLoadError: Boolean = exuBlockParams.map(_.hasLoadError).reduce(_ || _)
113
114  def flushPipe: Boolean = exuBlockParams.map(_.flushPipe).reduce(_ || _)
115
116  def replayInst: Boolean = exuBlockParams.map(_.replayInst).reduce(_ || _)
117
118  def trigger: Boolean = exuBlockParams.map(_.trigger).reduce(_ || _)
119
120  def needExceptionGen: Boolean = exceptionOut.nonEmpty || flushPipe || replayInst || trigger
121
122  def needPc: Boolean = JmpCnt + BrhCnt + FenceCnt > 0
123
124  def needSrcFrm: Boolean = exuBlockParams.map(_.needSrcFrm).reduce(_ || _)
125
126  def needSrcVxrm: Boolean = exuBlockParams.map(_.needSrcVxrm).reduce(_ || _)
127
128  def writeVConfig: Boolean = exuBlockParams.map(_.writeVConfig).reduce(_ || _)
129
130  def writeVType: Boolean = exuBlockParams.map(_.writeVType).reduce(_ || _)
131
132  def numPcReadPort: Int = (if (needPc) 1 else 0) * numEnq
133
134  def numWriteIntRf: Int = exuBlockParams.count(_.writeIntRf)
135
136  def numWriteFpRf: Int = exuBlockParams.count(_.writeFpRf)
137
138  def numWriteVecRf: Int = exuBlockParams.count(_.writeVecRf)
139
140  def numWriteVfRf: Int = exuBlockParams.count(_.writeVfRf)
141
142  def numNoDataWB: Int = exuBlockParams.count(_.hasNoDataWB)
143
144  def dataBitsMax: Int = if (numVecSrc > 0) VLEN else XLEN
145
146  def numDeq: Int = numDeqOutside + exuBlockParams.length
147
148  def numSimp: Int = numEntries - numEnq - numComp
149
150  def isAllComp: Boolean = numComp == (numEntries - numEnq)
151
152  def isAllSimp: Boolean = numComp == 0
153
154  def hasCompAndSimp: Boolean = !(isAllComp || isAllSimp)
155
156  def JmpCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.jmp)).sum
157
158  def BrhCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.brh)).sum
159
160  def I2fCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.i2f)).sum
161
162  def CsrCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.csr)).sum
163
164  def AluCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.alu)).sum
165
166  def MulCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.mul)).sum
167
168  def DivCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.div)).sum
169
170  def FenceCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.fence)).sum
171
172  def BkuCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.bku)).sum
173
174  def VsetCnt: Int = exuBlockParams.map(_.fuConfigs.count(x => x.fuType == FuType.vsetiwi || x.fuType == FuType.vsetiwf || x.fuType == FuType.vsetfwf)).sum
175
176  def FmacCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.fmac)).sum
177
178  def fDivSqrtCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.fDivSqrt)).sum
179
180  def LduCnt: Int = exuBlockParams.count(x => x.hasLoadFu && !x.hasStoreAddrFu)
181
182  def StaCnt: Int = exuBlockParams.count(x => !x.hasLoadFu && x.hasStoreAddrFu)
183
184  def MouCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.mou)).sum
185
186  def StdCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.name == "std")).sum
187
188  def HyuCnt: Int = exuBlockParams.count(_.hasHyldaFu) // only count hylda, since it equals to hysta
189
190  def LdExuCnt = LduCnt + HyuCnt
191
192  def VipuCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.vipu)).sum
193
194  def VfpuCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.vfpu)).sum
195
196  def VlduCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.vldu)).sum
197
198  def VstuCnt: Int = exuBlockParams.map(_.fuConfigs.count(_.fuType == FuType.vstu)).sum
199
200  def numRedirect: Int = exuBlockParams.count(_.hasRedirect)
201
202  def numWriteRegCache: Int = exuBlockParams.map(x => if (x.needWriteRegCache) 1 else 0).sum
203
204  def needWriteRegCache: Boolean = numWriteRegCache > 0
205
206  def needReadRegCache: Boolean = exuBlockParams.map(_.needReadRegCache).reduce(_ || _)
207
208  /**
209    * Get the regfile type that this issue queue need to read
210    */
211  def pregReadSet: Set[DataConfig] = exuBlockParams.map(_.pregRdDataCfgSet).fold(Set())(_ union _)
212
213  /**
214    * Get the regfile type that this issue queue need to read
215    */
216  def pregWriteSet: Set[DataConfig] = exuBlockParams.map(_.pregWbDataCfgSet).fold(Set())(_ union _)
217
218  /**
219    * Get the max width of psrc
220    */
221  def rdPregIdxWidth = {
222    this.pregReadSet.map(cfg => backendParam.getPregParams(cfg).addrWidth).fold(0)(_ max _)
223  }
224
225  /**
226    * Get the max width of pdest
227    */
228  def wbPregIdxWidth = {
229    this.pregWriteSet.map(cfg => backendParam.getPregParams(cfg).addrWidth).fold(0)(_ max _)
230  }
231
232  def iqWakeUpSourcePairs: Seq[WakeUpConfig] = exuBlockParams.flatMap(_.iqWakeUpSourcePairs)
233
234  /** Get exu source wake up
235    * @todo replace with
236    *       exuBlockParams
237    *       .flatMap(_.iqWakeUpSinkPairs)
238    *       .map(_.source)
239    *       .distinctBy(_.name)
240    *       when xiangshan is updated to 2.13.11
241    */
242  def wakeUpInExuSources: Seq[WakeUpSource] = {
243    SeqUtils.distinctBy(
244      exuBlockParams
245        .flatMap(_.iqWakeUpSinkPairs)
246        .map(_.source)
247    )(_.name)
248  }
249
250  def wakeUpOutExuSources: Seq[WakeUpSource] = {
251    SeqUtils.distinctBy(
252      exuBlockParams
253        .flatMap(_.iqWakeUpSourcePairs)
254        .map(_.source)
255    )(_.name)
256  }
257
258  def wakeUpToExuSinks = exuBlockParams
259    .flatMap(_.iqWakeUpSourcePairs)
260    .map(_.sink).distinct
261
262  def numWakeupToIQ: Int = wakeUpInExuSources.size
263
264  def numWakeupFromIQ: Int = wakeUpInExuSources.size
265
266  def numAllWakeUp: Int = numWakeupFromWB + numWakeupFromIQ + numWakeupFromOthers
267
268  def numWakeupFromWB = {
269    val pregSet = this.pregReadSet
270    pregSet.map(cfg => backendParam.getRfWriteSize(cfg)).sum
271  }
272
273  def hasIQWakeUp: Boolean = numWakeupFromIQ > 0 && numRegSrc > 0
274
275  def needWakeupFromIntWBPort = backendParam.allExuParams.filter(x => !wakeUpInExuSources.map(_.name).contains(x.name) && this.readIntRf).groupBy(x => x.getIntWBPort.getOrElse(IntWB(port = -1)).port).filter(_._1 != -1)
276
277  def needWakeupFromFpWBPort = backendParam.allExuParams.filter(x => !wakeUpInExuSources.map(_.name).contains(x.name) && this.readFpRf).groupBy(x => x.getFpWBPort.getOrElse(FpWB(port = -1)).port).filter(_._1 != -1)
278
279  def needWakeupFromVfWBPort = backendParam.allExuParams.filter(x => !wakeUpInExuSources.map(_.name).contains(x.name) && this.readVecRf).groupBy(x => x.getVfWBPort.getOrElse(VfWB(port = -1)).port).filter(_._1 != -1)
280
281  def needWakeupFromV0WBPort = backendParam.allExuParams.filter(x => !wakeUpInExuSources.map(_.name).contains(x.name) && this.readV0Rf).groupBy(x => x.getV0WBPort.getOrElse(V0WB(port = -1)).port).filter(_._1 != -1)
282
283  def needWakeupFromVlWBPort = backendParam.allExuParams.filter(x => !wakeUpInExuSources.map(_.name).contains(x.name) && this.readVlRf).groupBy(x => x.getVlWBPort.getOrElse(VlWB(port = -1)).port).filter(_._1 != -1)
284
285  def hasWakeupFromMem: Boolean = backendParam.allExuParams.filter(x => wakeUpInExuSources.map(_.name).contains(x.name)).map(_.isMemExeUnit).fold(false)(_ | _)
286
287  def hasWakeupFromVf: Boolean = backendParam.allExuParams.filter(x => wakeUpInExuSources.map(_.name).contains(x.name)).map(_.isVfExeUnit).fold(false)(_ | _)
288
289  def getFuCfgs: Seq[FuConfig] = exuBlockParams.flatMap(_.fuConfigs).distinct
290
291  def deqFuCfgs: Seq[Seq[FuConfig]] = exuBlockParams.map(_.fuConfigs)
292
293  def deqFuInterSect: Seq[FuConfig] = if (numDeq == 2) deqFuCfgs(0).intersect(deqFuCfgs(1)) else Seq()
294
295  def deqFuSame: Boolean = (numDeq == 2) && deqFuInterSect.length == deqFuCfgs(0).length && deqFuCfgs(0).length == deqFuCfgs(1).length
296
297  def deqFuDiff: Boolean = (numDeq == 2) && deqFuInterSect.length == 0
298
299  def deqImmTypes: Seq[UInt] = getFuCfgs.flatMap(_.immType).distinct
300
301  // set load imm to 32-bit for fused_lui_load
302  def deqImmTypesMaxLen: Int = if (isLdAddrIQ || isHyAddrIQ) 32 else deqImmTypes.map(SelImm.getImmUnion(_)).maxBy(_.len).len
303
304  def needImm: Boolean = deqImmTypes.nonEmpty
305
306  // cfgs(exuIdx)(set of exu's wb)
307
308  /**
309    * Get [[PregWB]] of this IssueBlock
310    * @return set of [[PregWB]] of [[ExeUnit]]
311    */
312  def getWbCfgs: Seq[Set[PregWB]] = {
313    exuBlockParams.map(exu => exu.wbPortConfigs.toSet)
314  }
315
316  def canAccept(fuType: UInt): Bool = {
317    Cat(getFuCfgs.map(_.fuType.U === fuType)).orR
318  }
319
320  def bindBackendParam(param: BackendParams): Unit = {
321    backendParam = param
322  }
323
324  def wakeUpSourceExuIdx: Seq[Int] = {
325    wakeUpInExuSources.map(x => backendParam.getExuIdx(x.name))
326  }
327
328  def genExuInputDecoupledBundle(implicit p: Parameters): MixedVec[DecoupledIO[ExuInput]] = {
329    MixedVec(this.exuBlockParams.map(x => DecoupledIO(x.genExuInputBundle)))
330  }
331
332  def genExuOutputDecoupledBundle(implicit p: Parameters): MixedVec[DecoupledIO[ExuOutput]] = {
333    MixedVec(this.exuParams.map(x => DecoupledIO(x.genExuOutputBundle)))
334  }
335
336  def genExuOutputValidBundle(implicit p: Parameters): MixedVec[ValidIO[ExuOutput]] = {
337    MixedVec(this.exuParams.map(x => ValidIO(x.genExuOutputBundle)))
338  }
339
340  def genExuBypassValidBundle(implicit p: Parameters): MixedVec[ValidIO[ExuBypassBundle]] = {
341    MixedVec(this.exuParams.filterNot(_.fakeUnit).map(x => ValidIO(x.genExuBypassBundle)))
342  }
343
344  def genIssueDecoupledBundle(implicit p: Parameters): MixedVec[DecoupledIO[IssueQueueIssueBundle]] = {
345    MixedVec(exuBlockParams.filterNot(_.fakeUnit).map(x => DecoupledIO(new IssueQueueIssueBundle(this, x))))
346  }
347
348  def genWBWakeUpSinkValidBundle(implicit p: Parameters): MixedVec[ValidIO[IssueQueueWBWakeUpBundle]] = {
349    val intBundle: Seq[ValidIO[IssueQueueWBWakeUpBundle]] = schdType match {
350      case IntScheduler() | MemScheduler() => needWakeupFromIntWBPort.map(x => ValidIO(new IssueQueueWBWakeUpBundle(x._2.map(_.exuIdx), backendParam))).toSeq
351      case _ => Seq()
352    }
353    val fpBundle = schdType match {
354      case FpScheduler() | MemScheduler() => needWakeupFromFpWBPort.map(x => ValidIO(new IssueQueueWBWakeUpBundle(x._2.map(_.exuIdx), backendParam))).toSeq
355      case _ => Seq()
356    }
357    val vfBundle = schdType match {
358      case VfScheduler() | MemScheduler() => needWakeupFromVfWBPort.map(x => ValidIO(new IssueQueueWBWakeUpBundle(x._2.map(_.exuIdx), backendParam))).toSeq
359      case _ => Seq()
360    }
361    val v0Bundle = schdType match {
362      case VfScheduler() | MemScheduler() => needWakeupFromV0WBPort.map(x => ValidIO(new IssueQueueWBWakeUpBundle(x._2.map(_.exuIdx), backendParam))).toSeq
363      case _ => Seq()
364    }
365    val vlBundle = schdType match {
366      case VfScheduler() | MemScheduler() => needWakeupFromVlWBPort.map(x => ValidIO(new IssueQueueWBWakeUpBundle(x._2.map(_.exuIdx), backendParam))).toSeq
367      case _ => Seq()
368    }
369    MixedVec(intBundle ++ fpBundle ++ vfBundle ++ v0Bundle ++ vlBundle)
370  }
371
372  def genIQWakeUpSourceValidBundle(implicit p: Parameters): MixedVec[ValidIO[IssueQueueIQWakeUpBundle]] = {
373    MixedVec(exuBlockParams.map(x => ValidIO(new IssueQueueIQWakeUpBundle(x.exuIdx, backendParam, x.copyWakeupOut, x.copyNum))))
374  }
375
376  def genIQWakeUpSinkValidBundle(implicit p: Parameters): MixedVec[ValidIO[IssueQueueIQWakeUpBundle]] = {
377    MixedVec(this.wakeUpInExuSources.map(x => ValidIO(new IssueQueueIQWakeUpBundle(backendParam.getExuIdx(x.name), backendParam))))
378  }
379
380  def genOGRespBundle(implicit p: Parameters) = {
381    implicit val issueBlockParams = this
382    MixedVec(exuBlockParams.map(_ => new OGRespBundle))
383  }
384
385  def genOG2RespBundle(implicit p: Parameters) = {
386    implicit val issueBlockParams = this
387    MixedVec(exuBlockParams.map(_ => new Valid(new EntryDeqRespBundle)))
388  }
389
390  def genWbFuBusyTableWriteBundle(implicit p: Parameters) = {
391    implicit val issueBlockParams = this
392    MixedVec(exuBlockParams.map(x => new WbFuBusyTableWriteBundle(x)))
393  }
394
395  def genWbFuBusyTableReadBundle(implicit p: Parameters) = {
396    implicit val issueBlockParams = this
397    MixedVec(exuBlockParams.map{ x =>
398      new WbFuBusyTableReadBundle(x)
399    })
400  }
401
402  def genWbConflictBundle()(implicit p: Parameters) = {
403    implicit val issueBlockParams = this
404    MixedVec(exuBlockParams.map { x =>
405      new WbConflictBundle(x)
406    })
407  }
408
409  def getIQName = {
410    "IssueQueue" ++ getFuCfgs.map(_.name).distinct.map(_.capitalize).reduce(_ ++ _)
411  }
412
413  def getEntryName = {
414    "Entries" ++ getFuCfgs.map(_.name).distinct.map(_.capitalize).reduce(_ ++ _)
415  }
416}
417