| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package accel |
| |
| import chisel3._ |
| import vta.dpi._ |
| |
| /** Add-by-one accelerator. |
| * |
| * ___________ ___________ |
| * | | | | |
| * | HostDPI | <--> | RegFile | <->| |
| * |_________| |_________| | |
| * | |
| * ___________ ___________ | |
| * | | | | | |
| * | MemDPI | <--> | Compute | <->| |
| * |_________| |_________| |
| * |
| */ |
| case class AccelConfig() { |
| val nCtrl = 1 |
| val nECnt = 1 |
| val nVals = 4 |
| val nPtrs = 3 |
| val regBits = 32 |
| val ptrBits = 2*regBits |
| } |
| |
| class Accel extends Module { |
| val io = IO(new Bundle { |
| val host = new VTAHostDPIClient |
| val mem = new VTAMemDPIMaster |
| }) |
| implicit val config = AccelConfig() |
| val rf = Module(new RegFile) |
| val ce = Module(new Compute) |
| rf.io.host <> io.host |
| io.mem <> ce.io.mem |
| ce.io.launch := rf.io.launch |
| rf.io.finish := ce.io.finish |
| rf.io.ecnt <> ce.io.ecnt |
| ce.io.vals <> rf.io.vals |
| ce.io.ptrs <> rf.io.ptrs |
| } |
