diplomacy: update to new API (#40)

[sifive-blocks.git] / src / main / scala / devices / uart / UARTPeriphery.scala

diff --git a/src/main/scala/devices/uart/UARTPeriphery.scala b/src/main/scala/devices/uart/UARTPeriphery.scala
index ef544bfe22fbc1f0f6d42f8f884711bd0328307b..d1db77b9d4ab222b10f84dc012b14e09dc52a9db 100644 (file)
--- a/src/main/scala/devices/uart/UARTPeriphery.scala
+++ b/src/main/scala/devices/uart/UARTPeriphery.scala
@@ -2,55 +2,38 @@
 package sifive.blocks.devices.uart
 
 import Chisel._
-import config.Field
-import diplomacy.LazyModule
-import rocketchip.{
-  HasTopLevelNetworks,
-  HasTopLevelNetworksBundle,
-  HasTopLevelNetworksModule
-}
-import uncore.tilelink2._
-
-import sifive.blocks.devices.gpio.{GPIOPin, GPIOOutputPinCtrl, GPIOInputPinCtrl}
-import sifive.blocks.util.ShiftRegisterInit
+import chisel3.experimental.{withClockAndReset}
+import freechips.rocketchip.config.Field
+import freechips.rocketchip.coreplex.{HasPeripheryBus, PeripheryBusKey, HasInterruptBus}
+import freechips.rocketchip.diplomacy.{LazyModule, LazyModuleImp}
 
 case object PeripheryUARTKey extends Field[Seq[UARTParams]]
 
-trait HasPeripheryUART extends HasTopLevelNetworks {
-  val uartParams = p(PeripheryUARTKey)  
+trait HasPeripheryUART extends HasPeripheryBus with HasInterruptBus {
+  private val divinit = (p(PeripheryBusKey).frequency / 115200).toInt
+  val uartParams = p(PeripheryUARTKey).map(_.copy(divisorInit = divinit))
   val uarts = uartParams map { params =>
-    val uart = LazyModule(new TLUART(peripheryBusBytes, params))
-    uart.node := TLFragmenter(peripheryBusBytes, cacheBlockBytes)(peripheryBus.node)
-    intBus.intnode := uart.intnode
+    val uart = LazyModule(new TLUART(pbus.beatBytes, params))
+    uart.node := pbus.toVariableWidthSlaves
+    ibus.fromSync := uart.intnode
     uart
   }
 }
 
-trait HasPeripheryUARTBundle extends HasTopLevelNetworksBundle {
-  val outer: HasPeripheryUART
-  val uarts = Vec(outer.uartParams.size, new UARTPortIO)
-}
+trait HasPeripheryUARTBundle {
+  val uart: Vec[UARTPortIO]
 
-trait HasPeripheryUARTModule extends HasTopLevelNetworksModule {
-  val outer: HasPeripheryUART
-  val io: HasPeripheryUARTBundle
-  (io.uarts zip outer.uarts).foreach { case (io, device) =>
-    io <> device.module.io.port
+  def tieoffUARTs(dummy: Int = 1) {
+    uart.foreach { _.rxd := UInt(1) }
   }
-}
 
-class UARTPinsIO extends Bundle {
-  val rxd = new GPIOPin
-  val txd = new GPIOPin
 }
 
-class UARTGPIOPort(syncStages: Int = 0) extends Module {
-  val io = new Bundle{
-    val uart = new UARTPortIO().flip()
-    val pins = new UARTPinsIO
-  }
+trait HasPeripheryUARTModuleImp extends LazyModuleImp with HasPeripheryUARTBundle {
+  val outer: HasPeripheryUART
+  val uart = IO(Vec(outer.uartParams.size, new UARTPortIO))
 
-  GPIOOutputPinCtrl(io.pins.txd, io.uart.txd)
-  val rxd = GPIOInputPinCtrl(io.pins.rxd)
-  io.uart.rxd := ShiftRegisterInit(rxd, syncStages, Bool(true))
+  (uart zip outer.uarts).foreach { case (io, device) =>
+    io <> device.module.io.port
+  }
 }