get rid of AtoS RTL
This commit is contained in:
Howard Mao
parent
f34843f1b9
commit
b9b79e4fb6
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@ -1,333 +0,0 @@
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package junctions
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import Chisel._
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import scala.math.max
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import cde.{Parameters, Field}
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trait HasAtosParameters extends HasNastiParameters {
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// round up to a multiple of 32
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def roundup(n: Int) = 32 * ((n - 1) / 32 + 1)
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val atosUnionBits = max(
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nastiXIdBits + nastiXDataBits + nastiWStrobeBits + 1,
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nastiXIdBits + nastiXBurstBits +
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nastiXSizeBits + nastiXLenBits + nastiXAddrBits)
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val atosIdBits = nastiXIdBits
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val atosTypBits = 2
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val atosRespBits = nastiXRespBits
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val atosDataBits = nastiXDataBits
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val atosAddrOffset = atosIdBits
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val atosLenOffset = atosIdBits + nastiXAddrBits
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val atosSizeOffset = atosLenOffset + nastiXLenBits
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val atosBurstOffset = atosSizeOffset + nastiXSizeBits
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val atosDataOffset = atosIdBits
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val atosStrobeOffset = nastiXDataBits + atosIdBits
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val atosLastOffset = atosStrobeOffset + nastiWStrobeBits
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val atosRequestBits = roundup(atosTypBits + atosUnionBits)
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val atosResponseBits = roundup(atosTypBits + atosIdBits + atosRespBits + atosDataBits + 1)
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val atosRequestBytes = atosRequestBits / 8
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val atosResponseBytes = atosResponseBits / 8
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val atosRequestWords = atosRequestBytes / 4
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val atosResponseWords = atosResponseBytes / 4
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}
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abstract class AtosModule(implicit val p: Parameters)
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extends Module with HasAtosParameters
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abstract class AtosBundle(implicit val p: Parameters)
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extends ParameterizedBundle()(p) with HasAtosParameters
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object AtosRequest {
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def arType = UInt("b00")
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def awType = UInt("b01")
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def wType = UInt("b10")
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def apply(typ: UInt, union: UInt)(implicit p: Parameters): AtosRequest = {
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val areq = Wire(new AtosRequest)
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areq.typ := typ
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areq.union := union
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areq
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}
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def apply(ar: NastiReadAddressChannel)(implicit p: Parameters): AtosRequest =
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apply(arType, Cat(ar.burst, ar.size, ar.len, ar.addr, ar.id))
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def apply(aw: NastiWriteAddressChannel)(implicit p: Parameters): AtosRequest =
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apply(awType, Cat(aw.burst, aw.size, aw.len, aw.addr, aw.id))
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def apply(w: NastiWriteDataChannel)(implicit p: Parameters): AtosRequest =
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apply(wType, Cat(w.last, w.strb, w.data, w.id))
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}
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class AtosRequest(implicit p: Parameters)
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extends AtosBundle()(p) with Serializable {
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val typ = UInt(width = atosTypBits)
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val union = UInt(width = atosUnionBits)
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def burst(dummy: Int = 0) =
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union(atosUnionBits - 1, atosBurstOffset)
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def size(dummy: Int = 0) =
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union(atosBurstOffset - 1, atosSizeOffset)
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def len(dummy: Int = 0) =
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union(atosSizeOffset - 1, atosLenOffset)
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def addr(dummy: Int = 0) =
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union(atosLenOffset - 1, atosAddrOffset)
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def id(dummy: Int = 0) =
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union(atosIdBits - 1, 0)
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def data(dummy: Int = 0) =
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union(atosStrobeOffset - 1, atosDataOffset)
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def strb(dummy: Int = 0) =
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union(atosLastOffset - 1, atosStrobeOffset)
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def last(dummy: Int = 0) =
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union(atosLastOffset)
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def has_addr(dummy: Int = 0) =
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typ === AtosRequest.arType || typ === AtosRequest.awType
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def has_data(dummy: Int = 0) =
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typ === AtosRequest.wType
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def is_last(dummy: Int = 0) =
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typ === AtosRequest.arType || (typ === AtosRequest.wType && last())
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def nbits: Int = atosRequestBits
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def resp_len(dummy: Int = 0) =
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MuxLookup(typ, UInt(0), Seq(
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AtosRequest.arType -> (len() + UInt(1)),
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AtosRequest.awType -> UInt(1)))
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}
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object AtosResponse {
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def rType = UInt("b00")
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def bType = UInt("b01")
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def apply(typ: UInt, id: UInt, resp: UInt, data: UInt, last: Bool)
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(implicit p: Parameters): AtosResponse = {
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val aresp = Wire(new AtosResponse)
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aresp.typ := typ
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aresp.id := id
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aresp.resp := resp
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aresp.data := data
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aresp.last := last
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aresp
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}
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def apply(r: NastiReadDataChannel)(implicit p: Parameters): AtosResponse =
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apply(rType, r.id, r.resp, r.data, r.last)
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def apply(b: NastiWriteResponseChannel)(implicit p: Parameters): AtosResponse =
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apply(bType, b.id, b.resp, UInt(0), Bool(false))
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}
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class AtosResponse(implicit p: Parameters)
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extends AtosBundle()(p) with Serializable {
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val typ = UInt(width = atosTypBits)
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val id = UInt(width = atosIdBits)
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val resp = UInt(width = atosRespBits)
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val last = Bool()
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val data = UInt(width = atosDataBits)
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def has_data(dummy: Int = 0) = typ === AtosResponse.rType
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def is_last(dummy: Int = 0) = !has_data() || last
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def nbits: Int = atosResponseBits
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}
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class AtosIO(implicit p: Parameters) extends AtosBundle()(p) {
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val req = Decoupled(new AtosRequest)
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val resp = Decoupled(new AtosResponse).flip
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}
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class AtosRequestEncoder(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val ar = Decoupled(new NastiReadAddressChannel).flip
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val aw = Decoupled(new NastiWriteAddressChannel).flip
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val w = Decoupled(new NastiWriteDataChannel).flip
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val req = Decoupled(new AtosRequest)
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}
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val writing = Reg(init = Bool(false))
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io.ar.ready := !writing && io.req.ready
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io.aw.ready := !writing && !io.ar.valid && io.req.ready
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io.w.ready := writing && io.req.ready
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io.req.valid := Mux(writing, io.w.valid, io.ar.valid || io.aw.valid)
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io.req.bits := Mux(writing, AtosRequest(io.w.bits),
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Mux(io.ar.valid, AtosRequest(io.ar.bits), AtosRequest(io.aw.bits)))
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when (io.aw.fire()) { writing := Bool(true) }
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when (io.w.fire() && io.w.bits.last) { writing := Bool(false) }
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}
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class AtosResponseDecoder(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val resp = Decoupled(new AtosResponse).flip
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val b = Decoupled(new NastiWriteResponseChannel)
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val r = Decoupled(new NastiReadDataChannel)
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}
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val is_b = io.resp.bits.typ === AtosResponse.bType
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val is_r = io.resp.bits.typ === AtosResponse.rType
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io.b.valid := io.resp.valid && is_b
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io.b.bits := NastiWriteResponseChannel(
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id = io.resp.bits.id,
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resp = io.resp.bits.resp)
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io.r.valid := io.resp.valid && is_r
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io.r.bits := NastiReadDataChannel(
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id = io.resp.bits.id,
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data = io.resp.bits.data,
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last = io.resp.bits.last,
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resp = io.resp.bits.resp)
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io.resp.ready := (is_b && io.b.ready) || (is_r && io.r.ready)
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}
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class AtosClientConverter(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val nasti = (new NastiIO).flip
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val atos = new AtosIO
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}
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val req_enc = Module(new AtosRequestEncoder)
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req_enc.io.ar <> io.nasti.ar
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req_enc.io.aw <> io.nasti.aw
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req_enc.io.w <> io.nasti.w
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io.atos.req <> req_enc.io.req
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val resp_dec = Module(new AtosResponseDecoder)
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resp_dec.io.resp <> io.atos.resp
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io.nasti.b <> resp_dec.io.b
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io.nasti.r <> resp_dec.io.r
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}
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class AtosRequestDecoder(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val req = Decoupled(new AtosRequest).flip
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val ar = Decoupled(new NastiReadAddressChannel)
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val aw = Decoupled(new NastiWriteAddressChannel)
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val w = Decoupled(new NastiWriteDataChannel)
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}
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val is_ar = io.req.bits.typ === AtosRequest.arType
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val is_aw = io.req.bits.typ === AtosRequest.awType
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val is_w = io.req.bits.typ === AtosRequest.wType
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io.ar.valid := io.req.valid && is_ar
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io.ar.bits := NastiReadAddressChannel(
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id = io.req.bits.id(),
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addr = io.req.bits.addr(),
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size = io.req.bits.size(),
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len = io.req.bits.len(),
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burst = io.req.bits.burst())
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io.aw.valid := io.req.valid && is_aw
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io.aw.bits := NastiWriteAddressChannel(
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id = io.req.bits.id(),
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addr = io.req.bits.addr(),
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size = io.req.bits.size(),
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len = io.req.bits.len(),
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burst = io.req.bits.burst())
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io.w.valid := io.req.valid && is_w
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io.w.bits := NastiWriteDataChannel(
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id = io.req.bits.id(),
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data = io.req.bits.data(),
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strb = Some(io.req.bits.strb()),
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last = io.req.bits.last())
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io.req.ready := (io.ar.ready && is_ar) ||
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(io.aw.ready && is_aw) ||
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(io.w.ready && is_w)
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}
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class AtosResponseEncoder(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val b = Decoupled(new NastiWriteResponseChannel).flip
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val r = Decoupled(new NastiReadDataChannel).flip
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val resp = Decoupled(new AtosResponse)
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}
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val locked = Reg(init = Bool(false))
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io.resp.valid := (io.b.valid && !locked) || io.r.valid
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io.resp.bits := Mux(io.r.valid,
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AtosResponse(io.r.bits), AtosResponse(io.b.bits))
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io.b.ready := !locked && !io.r.valid && io.resp.ready
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io.r.ready := io.resp.ready
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when (io.r.fire() && !io.r.bits.last) { locked := Bool(true) }
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when (io.r.fire() && io.r.bits.last) { locked := Bool(false) }
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}
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class AtosManagerConverter(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val atos = (new AtosIO).flip
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val nasti = new NastiIO
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}
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val req_dec = Module(new AtosRequestDecoder)
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val resp_enc = Module(new AtosResponseEncoder)
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req_dec.io.req <> io.atos.req
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io.atos.resp <> resp_enc.io.resp
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io.nasti.ar <> req_dec.io.ar
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io.nasti.aw <> req_dec.io.aw
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io.nasti.w <> req_dec.io.w
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resp_enc.io.b <> io.nasti.b
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resp_enc.io.r <> io.nasti.r
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}
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class AtosSerializedIO(w: Int)(implicit p: Parameters) extends ParameterizedBundle()(p) {
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val req = Decoupled(Bits(width = w))
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val resp = Decoupled(Bits(width = w)).flip
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val clk = Bool(OUTPUT)
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val clk_edge = Bool(OUTPUT)
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override def cloneType = new AtosSerializedIO(w)(p).asInstanceOf[this.type]
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}
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class AtosSerdes(w: Int)(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val wide = (new AtosIO).flip
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val narrow = new AtosSerializedIO(w)
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}
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val ser = Module(new Serializer(w, new AtosRequest))
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ser.io.in <> io.wide.req
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io.narrow.req <> ser.io.out
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val des = Module(new Deserializer(w, new AtosResponse))
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des.io.in <> io.narrow.resp
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io.wide.resp <> des.io.out
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}
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class AtosDesser(w: Int)(implicit p: Parameters) extends AtosModule()(p) {
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val io = new Bundle {
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val narrow = new AtosSerializedIO(w).flip
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val wide = new AtosIO
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}
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val des = Module(new Deserializer(w, new AtosRequest))
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des.io.in <> io.narrow.req
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io.wide.req <> des.io.out
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val ser = Module(new Serializer(w, new AtosResponse))
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ser.io.in <> io.wide.resp
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io.narrow.resp <> ser.io.out
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}
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@ -77,76 +77,6 @@ class NastiDriver(dataWidth: Int, burstLen: Int, nBursts: Int)
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s"NastiDriver got wrong data")
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}
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class AtosConverterTestBackend(implicit p: Parameters) extends NastiModule()(p) {
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val io = new Bundle {
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val nasti = (new NastiIO).flip
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val finished = Bool(OUTPUT)
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}
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val (s_waddr :: s_wdata :: s_wresp ::
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s_raddr :: s_rresp :: s_done :: Nil) = Enum(Bits(), 6)
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val state = Reg(init = s_waddr)
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val n_words = 4
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val test_data = Reg(Vec(n_words, UInt(width = nastiXDataBits)))
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val req_id = Reg(UInt(width = nastiXIdBits))
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val (w_count, w_last) = Counter(io.nasti.w.fire(), n_words)
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val (r_count, r_last) = Counter(io.nasti.r.fire(), n_words)
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when (io.nasti.aw.fire()) {
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req_id := io.nasti.aw.bits.id
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state := s_wdata
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}
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when (io.nasti.w.fire()) {
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test_data(w_count) := io.nasti.w.bits.data
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when (io.nasti.w.bits.last) { state := s_wresp }
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}
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when (io.nasti.b.fire()) { state := s_raddr }
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when (io.nasti.ar.fire()) {
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req_id := io.nasti.ar.bits.id
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state := s_rresp
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}
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when (io.nasti.r.fire() && io.nasti.r.bits.last) { state := s_done }
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io.nasti.aw.ready := (state === s_waddr)
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io.nasti.w.ready := (state === s_wdata)
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io.nasti.ar.ready := (state === s_raddr)
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io.nasti.b.valid := (state === s_wresp)
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io.nasti.b.bits := NastiWriteResponseChannel(id = req_id)
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io.nasti.r.valid := (state === s_rresp)
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io.nasti.r.bits := NastiReadDataChannel(
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id = req_id,
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data = test_data(r_count),
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last = r_last)
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io.finished := (state === s_done)
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}
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class AtosConverterTest(implicit val p: Parameters) extends UnitTest
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with HasNastiParameters {
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val frontend = Module(new NastiDriver(nastiXDataBits, 4, 1))
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val backend = Module(new AtosConverterTestBackend)
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val serdes = Module(new AtosSerdes(8))
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val desser = Module(new AtosDesser(8))
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val client_conv = Module(new AtosClientConverter)
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val manager_conv = Module(new AtosManagerConverter)
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client_conv.io.nasti <> frontend.io.nasti
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serdes.io.wide <> client_conv.io.atos
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desser.io.narrow <> serdes.io.narrow
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manager_conv.io.atos <> desser.io.wide
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backend.io.nasti <> manager_conv.io.nasti
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frontend.io.start := io.start
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io.finished := frontend.io.finished && backend.io.finished
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}
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class HastiTest(implicit p: Parameters) extends UnitTest {
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val sram = Module(new HastiTestSRAM(8))
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val bus = Module(new HastiBus(Seq(a => Bool(true))))
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@ -159,5 +89,3 @@ class HastiTest(implicit p: Parameters) extends UnitTest {
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io.finished := driver.io.finished
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driver.io.start := io.start
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}
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@ -59,7 +59,6 @@ object JunctionsUnitTests {
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def apply(implicit p: Parameters): Seq[UnitTest] =
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Seq(
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Module(new MultiWidthFifoTest),
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Module(new AtosConverterTest),
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Module(new NastiMemoryDemuxTest),
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Module(new HastiTest))
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}
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Reference in New Issue
Block a user