src/main/scala/devices/spi/SPIPeriphery.scala

   1 // See LICENSE for license details.
   2 package sifive.blocks.devices.spi
   3
   4 import Chisel._
   5 import config.Field
   6 import diplomacy.LazyModule
   7 import rocketchip.{
   8   HasTopLevelNetworks,
   9   HasTopLevelNetworksBundle,
  10   HasTopLevelNetworksModule
  11 }
  12 import uncore.tilelink2.{TLFragmenter, TLWidthWidget}
  13 import util.HeterogeneousBag
  14
  15 case object PeripherySPIKey extends Field[Seq[SPIParams]]
  16
  17 trait HasPeripherySPI extends HasTopLevelNetworks {
  18   val spiParams = p(PeripherySPIKey)
  19   val spis = spiParams map { params =>
  20     val spi = LazyModule(new TLSPI(peripheryBusBytes, params))
  21     spi.rnode := TLFragmenter(peripheryBusBytes, cacheBlockBytes)(peripheryBus.node)
  22     intBus.intnode := spi.intnode
  23     spi
  24   }
  25 }
  26
  27 trait HasPeripherySPIBundle extends HasTopLevelNetworksBundle {
  28   val outer: HasPeripherySPI
  29   val spis = HeterogeneousBag(outer.spiParams.map(new SPIPortIO(_)))
  30 }
  31
  32 trait HasPeripherySPIModule extends HasTopLevelNetworksModule {
  33   val outer: HasPeripherySPI
  34   val io: HasPeripherySPIBundle
  35   (io.spis zip outer.spis).foreach { case (io, device) =>
  36     io <> device.module.io.port
  37   }
  38 }
  39
  40 case object PeripherySPIFlashKey extends Field[SPIFlashParams]
  41
  42 trait HasPeripherySPIFlash extends HasTopLevelNetworks {
  43   val spiFlashParams = p(PeripherySPIFlashKey)
  44   val qspi = LazyModule(new TLSPIFlash(peripheryBusBytes, spiFlashParams))
  45   qspi.rnode := TLFragmenter(peripheryBusBytes, cacheBlockBytes)(peripheryBus.node)
  46   qspi.fnode := TLFragmenter(1, cacheBlockBytes)(TLWidthWidget(peripheryBusBytes)(peripheryBus.node))
  47   intBus.intnode := qspi.intnode
  48 }
  49
  50 trait HasPeripherySPIFlashBundle extends HasTopLevelNetworksBundle {
  51   val outer: HasPeripherySPIFlash
  52   val qspi = new SPIPortIO(outer.spiFlashParams)
  53 }
  54
  55 trait HasPeripherySPIFlashModule extends HasTopLevelNetworksModule {
  56   val outer: HasPeripherySPIFlash
  57   val io: HasPeripherySPIFlashBundle
  58   io.qspi <> outer.qspi.module.io.port
  59 }