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 chisel3._ 20import chisel3.util._ 21import org.chipsalliance.cde.config._ 22import chisel3.util.{Valid, ValidIO} 23import freechips.rocketchip.diplomacy._ 24import freechips.rocketchip.interrupts._ 25import freechips.rocketchip.tile.{BusErrorUnit, BusErrorUnitParams, BusErrors, MaxHartIdBits} 26import freechips.rocketchip.tilelink._ 27import coupledL2.{L2ParamKey, EnableCHI} 28import coupledL2.tl2tl.TL2TLCoupledL2 29import coupledL2.tl2chi.{TL2CHICoupledL2, PortIO} 30import huancun.BankBitsKey 31import system.HasSoCParameter 32import top.BusPerfMonitor 33import utility.{DelayN, ResetGen, TLClientsMerger, TLEdgeBuffer, TLLogger} 34import xiangshan.cache.mmu.TlbRequestIO 35 36class L1BusErrorUnitInfo(implicit val p: Parameters) extends Bundle with HasSoCParameter { 37 val ecc_error = Valid(UInt(soc.PAddrBits.W)) 38} 39 40class XSL1BusErrors()(implicit val p: Parameters) extends BusErrors { 41 val icache = new L1BusErrorUnitInfo 42 val dcache = new L1BusErrorUnitInfo 43 val l2 = new L1BusErrorUnitInfo 44 45 override def toErrorList: List[Option[(ValidIO[UInt], String, String)]] = 46 List( 47 Some(icache.ecc_error, "I_ECC", "Icache ecc error"), 48 Some(dcache.ecc_error, "D_ECC", "Dcache ecc error"), 49 Some(l2.ecc_error, "L2_ECC", "L2Cache ecc error") 50 ) 51} 52 53/** 54 * L2Top contains everything between Core and XSTile-IO 55 */ 56class L2Top()(implicit p: Parameters) extends LazyModule 57 with HasXSParameter 58 with HasSoCParameter 59{ 60 def chainBuffer(depth: Int, n: String): (Seq[LazyModule], TLNode) = { 61 val buffers = Seq.fill(depth){ LazyModule(new TLBuffer()) } 62 buffers.zipWithIndex.foreach{ case (b, i) => { 63 b.suggestName(s"${n}_${i}") 64 }} 65 val node = buffers.map(_.node.asInstanceOf[TLNode]).reduce(_ :*=* _) 66 (buffers, node) 67 } 68 val enableCHI = p(EnableCHI) 69 val enableL2 = coreParams.L2CacheParamsOpt.isDefined 70 // =========== Components ============ 71 val l1_xbar = TLXbar() 72 val mmio_xbar = TLXbar() 73 val mmio_port = TLIdentityNode() // to L3 74 val memory_port = if (enableCHI && enableL2) None else Some(TLIdentityNode()) 75 val beu = LazyModule(new BusErrorUnit( 76 new XSL1BusErrors(), BusErrorUnitParams(0x38010000) 77 )) 78 79 val i_mmio_port = TLTempNode() 80 val d_mmio_port = TLTempNode() 81 82 val misc_l2_pmu = BusPerfMonitor(name = "Misc_L2", enable = !debugOpts.FPGAPlatform) // l1D & l1I & PTW 83 val l2_l3_pmu = BusPerfMonitor(name = "L2_L3", enable = !debugOpts.FPGAPlatform, stat_latency = true) 84 val xbar_l2_buffer = TLBuffer() 85 86 val enbale_tllog = !debugOpts.FPGAPlatform && debugOpts.AlwaysBasicDB 87 val l1d_logger = TLLogger(s"L2_L1D_${coreParams.HartId}", enbale_tllog) 88 val l1i_logger = TLLogger(s"L2_L1I_${coreParams.HartId}", enbale_tllog) 89 val ptw_logger = TLLogger(s"L2_PTW_${coreParams.HartId}", enbale_tllog) 90 val ptw_to_l2_buffer = LazyModule(new TLBuffer) 91 val i_mmio_buffer = LazyModule(new TLBuffer) 92 93 val clint_int_node = IntIdentityNode() 94 val debug_int_node = IntIdentityNode() 95 val plic_int_node = IntIdentityNode() 96 97 println(s"enableCHI: ${enableCHI}") 98 val l2cache = if (enableL2) { 99 val config = new Config((_, _, _) => { 100 case L2ParamKey => coreParams.L2CacheParamsOpt.get.copy( 101 hartId = p(XSCoreParamsKey).HartId, 102 FPGAPlatform = debugOpts.FPGAPlatform 103 ) 104 case EnableCHI => p(EnableCHI) 105 case BankBitsKey => log2Ceil(coreParams.L2NBanks) 106 case MaxHartIdBits => p(MaxHartIdBits) 107 }) 108 if (enableCHI) Some(LazyModule(new TL2CHICoupledL2()(new Config(config)))) 109 else Some(LazyModule(new TL2TLCoupledL2()(new Config(config)))) 110 } else None 111 val l2_binder = coreParams.L2CacheParamsOpt.map(_ => BankBinder(coreParams.L2NBanks, 64)) 112 113 // =========== Connection ============ 114 // l2 to l2_binder, then to memory_port 115 l2cache match { 116 case Some(l2) => 117 l2_binder.get :*= l2.node :*= xbar_l2_buffer :*= l1_xbar :=* misc_l2_pmu 118 l2 match { 119 case l2: TL2TLCoupledL2 => 120 memory_port.get := l2_l3_pmu := TLClientsMerger() := TLXbar() :=* l2_binder.get 121 case l2: TL2CHICoupledL2 => 122 l2.managerNode := TLXbar() :=* l2_binder.get 123 l2.mmioNode := mmio_port 124 } 125 case None => 126 memory_port.get := l1_xbar 127 } 128 129 mmio_xbar := TLBuffer.chainNode(2) := i_mmio_port 130 mmio_xbar := TLBuffer.chainNode(2) := d_mmio_port 131 beu.node := TLBuffer.chainNode(1) := mmio_xbar 132 mmio_port := TLBuffer() := mmio_xbar 133 134 class L2TopImp(wrapper: LazyModule) extends LazyModuleImp(wrapper) { 135 val beu_errors = IO(Input(chiselTypeOf(beu.module.io.errors))) 136 val reset_vector = IO(new Bundle { 137 val fromTile = Input(UInt(PAddrBits.W)) 138 val toCore = Output(UInt(PAddrBits.W)) 139 }) 140 val hartId = IO(new Bundle() { 141 val fromTile = Input(UInt(64.W)) 142 val toCore = Output(UInt(64.W)) 143 }) 144 val cpu_halt = IO(new Bundle() { 145 val fromCore = Input(Bool()) 146 val toTile = Output(Bool()) 147 }) 148 val debugTopDown = IO(new Bundle() { 149 val robTrueCommit = Input(UInt(64.W)) 150 val robHeadPaddr = Flipped(Valid(UInt(36.W))) 151 val l2MissMatch = Output(Bool()) 152 }) 153 val chi = if (enableCHI) Some(IO(new PortIO)) else None 154 val nodeID = if (enableCHI) Some(IO(Input(UInt(NodeIDWidth.W)))) else None 155 val l2_tlb_req = IO(new TlbRequestIO(nRespDups = 2)) 156 val l2_hint = IO(ValidIO(new L2ToL1Hint())) 157 158 val resetDelayN = Module(new DelayN(UInt(PAddrBits.W), 5)) 159 160 beu.module.io.errors <> beu_errors 161 resetDelayN.io.in := reset_vector.fromTile 162 reset_vector.toCore := resetDelayN.io.out 163 hartId.toCore := hartId.fromTile 164 cpu_halt.toTile := cpu_halt.fromCore 165 dontTouch(hartId) 166 dontTouch(cpu_halt) 167 168 if (l2cache.isDefined) { 169 val l2 = l2cache.get.module 170 l2_hint := l2.io.l2_hint 171 l2.io.debugTopDown.robHeadPaddr := DontCare 172 l2.io.hartId := hartId.fromTile 173 l2.io.debugTopDown.robHeadPaddr := debugTopDown.robHeadPaddr 174 l2.io.debugTopDown.robTrueCommit := debugTopDown.robTrueCommit 175 debugTopDown.l2MissMatch := l2.io.debugTopDown.l2MissMatch 176 177 /* l2 tlb */ 178 l2_tlb_req.req.bits := DontCare 179 l2_tlb_req.req.valid := l2.io.l2_tlb_req.req.valid 180 l2_tlb_req.resp.ready := l2.io.l2_tlb_req.resp.ready 181 l2_tlb_req.req.bits.vaddr := l2.io.l2_tlb_req.req.bits.vaddr 182 l2_tlb_req.req.bits.cmd := l2.io.l2_tlb_req.req.bits.cmd 183 l2_tlb_req.req.bits.size := l2.io.l2_tlb_req.req.bits.size 184 l2_tlb_req.req.bits.kill := l2.io.l2_tlb_req.req.bits.kill 185 l2_tlb_req.req.bits.no_translate := l2.io.l2_tlb_req.req.bits.no_translate 186 l2_tlb_req.req_kill := l2.io.l2_tlb_req.req_kill 187 l2.io.l2_tlb_req.resp.valid := l2_tlb_req.resp.valid 188 l2.io.l2_tlb_req.req.ready := l2_tlb_req.req.ready 189 l2.io.l2_tlb_req.resp.bits.paddr.head := l2_tlb_req.resp.bits.paddr.head 190 l2.io.l2_tlb_req.resp.bits.miss := l2_tlb_req.resp.bits.miss 191 l2.io.l2_tlb_req.resp.bits.excp.head <> l2_tlb_req.resp.bits.excp.head 192 193 l2cache.get match { 194 case l2cache: TL2CHICoupledL2 => 195 val l2 = l2cache.module 196 l2.io_nodeID := nodeID.get 197 chi.get <> l2.io_chi 198 case l2cache: TL2TLCoupledL2 => 199 } 200 } else { 201 l2_hint := 0.U.asTypeOf(l2_hint) 202 debugTopDown <> DontCare 203 204 l2_tlb_req.req.valid := false.B 205 l2_tlb_req.req.bits := DontCare 206 l2_tlb_req.req_kill := DontCare 207 l2_tlb_req.resp.ready := true.B 208 } 209 } 210 211 lazy val module = new L2TopImp(this) 212} 213