moved buses to junctions repo
This commit is contained in:
Henry Cook
parent
8b1ab23347
commit
c70b495f6d
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@ -6,8 +6,8 @@ name := "uncore"
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scalaVersion := "2.10.2"
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// Provide a managed dependency on chisel if -DchiselVersion="" is supplied on the command line.
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libraryDependencies ++= (Seq("chisel").map {
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// Provide a managed dependency on X if -DXVersion="" is supplied on the command line.
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libraryDependencies ++= (Seq("chisel","junction").map {
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dep: String => sys.props.get(dep + "Version") map { "edu.berkeley.cs" %% dep % _ }}).flatten
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site.settings
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@ -3,6 +3,7 @@
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package uncore
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import Chisel._
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import scala.reflect.ClassTag
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import junctions._
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case object CacheName extends Field[String]
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case object NSets extends Field[Int]
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@ -1,640 +0,0 @@
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// See LICENSE for license details.
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package uncore
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import Chisel._
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import scala.math._
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case object PAddrBits extends Field[Int]
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case object VAddrBits extends Field[Int]
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case object PgIdxBits extends Field[Int]
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case object PgLevels extends Field[Int]
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case object PgLevelBits extends Field[Int]
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case object ASIdBits extends Field[Int]
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case object PPNBits extends Field[Int]
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case object VPNBits extends Field[Int]
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case object MIFAddrBits extends Field[Int]
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case object MIFDataBits extends Field[Int]
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case object MIFTagBits extends Field[Int]
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case object MIFDataBeats extends Field[Int]
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trait MIFParameters extends UsesParameters {
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val mifTagBits = params(MIFTagBits)
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val mifAddrBits = params(MIFAddrBits)
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val mifDataBits = params(MIFDataBits)
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val mifDataBeats = params(MIFDataBeats)
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}
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abstract class MIFBundle extends Bundle with MIFParameters
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abstract class MIFModule extends Module with MIFParameters
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trait HasMemData extends MIFBundle {
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val data = Bits(width = mifDataBits)
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}
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trait HasMemAddr extends MIFBundle {
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val addr = UInt(width = mifAddrBits)
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}
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trait HasMemTag extends MIFBundle {
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val tag = UInt(width = mifTagBits)
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}
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class MemReqCmd extends HasMemAddr with HasMemTag {
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val rw = Bool()
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}
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class MemTag extends HasMemTag
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class MemData extends HasMemData
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class MemResp extends HasMemData with HasMemTag
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class MemIO extends Bundle {
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val req_cmd = Decoupled(new MemReqCmd)
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val req_data = Decoupled(new MemData)
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val resp = Decoupled(new MemResp).flip
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}
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class MemPipeIO extends Bundle {
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val req_cmd = Decoupled(new MemReqCmd)
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val req_data = Decoupled(new MemData)
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val resp = Valid(new MemResp).flip
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}
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class MemSerializedIO(w: Int) extends Bundle {
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val req = Decoupled(Bits(width = w))
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val resp = Valid(Bits(width = w)).flip
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}
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class MemSerdes extends MIFModule
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{
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val w = params(HTIFWidth)
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val io = new Bundle {
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val wide = new MemIO().flip
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val narrow = new MemSerializedIO(w)
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}
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val abits = io.wide.req_cmd.bits.toBits.getWidth
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val dbits = io.wide.req_data.bits.toBits.getWidth
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val rbits = io.wide.resp.bits.getWidth
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val out_buf = Reg(Bits())
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val in_buf = Reg(Bits())
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val s_idle :: s_read_addr :: s_write_addr :: s_write_idle :: s_write_data :: Nil = Enum(UInt(), 5)
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val state = Reg(init=s_idle)
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val send_cnt = Reg(init=UInt(0, log2Up((max(abits, dbits)+w-1)/w)))
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val data_send_cnt = Reg(init=UInt(0, log2Up(mifDataBeats)))
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val adone = io.narrow.req.ready && send_cnt === UInt((abits-1)/w)
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val ddone = io.narrow.req.ready && send_cnt === UInt((dbits-1)/w)
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when (io.narrow.req.valid && io.narrow.req.ready) {
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send_cnt := send_cnt + UInt(1)
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out_buf := out_buf >> UInt(w)
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}
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when (io.wide.req_cmd.valid && io.wide.req_cmd.ready) {
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out_buf := io.wide.req_cmd.bits.toBits
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}
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when (io.wide.req_data.valid && io.wide.req_data.ready) {
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out_buf := io.wide.req_data.bits.toBits
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}
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io.wide.req_cmd.ready := state === s_idle
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io.wide.req_data.ready := state === s_write_idle
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io.narrow.req.valid := state === s_read_addr || state === s_write_addr || state === s_write_data
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io.narrow.req.bits := out_buf
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when (state === s_idle && io.wide.req_cmd.valid) {
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state := Mux(io.wide.req_cmd.bits.rw, s_write_addr, s_read_addr)
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}
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when (state === s_read_addr && adone) {
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state := s_idle
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send_cnt := UInt(0)
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}
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when (state === s_write_addr && adone) {
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state := s_write_idle
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send_cnt := UInt(0)
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}
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when (state === s_write_idle && io.wide.req_data.valid) {
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state := s_write_data
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}
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when (state === s_write_data && ddone) {
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data_send_cnt := data_send_cnt + UInt(1)
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state := Mux(data_send_cnt === UInt(mifDataBeats-1), s_idle, s_write_idle)
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send_cnt := UInt(0)
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}
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val recv_cnt = Reg(init=UInt(0, log2Up((rbits+w-1)/w)))
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val data_recv_cnt = Reg(init=UInt(0, log2Up(mifDataBeats)))
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val resp_val = Reg(init=Bool(false))
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resp_val := Bool(false)
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when (io.narrow.resp.valid) {
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recv_cnt := recv_cnt + UInt(1)
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when (recv_cnt === UInt((rbits-1)/w)) {
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recv_cnt := UInt(0)
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data_recv_cnt := data_recv_cnt + UInt(1)
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resp_val := Bool(true)
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}
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in_buf := Cat(io.narrow.resp.bits, in_buf((rbits+w-1)/w*w-1,w))
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}
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io.wide.resp.valid := resp_val
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io.wide.resp.bits := io.wide.resp.bits.fromBits(in_buf)
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}
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class MemDesserIO(w: Int) extends Bundle {
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val narrow = new MemSerializedIO(w).flip
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val wide = new MemIO
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}
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class MemDesser(w: Int) extends Module // test rig side
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{
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val io = new MemDesserIO(w)
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val abits = io.wide.req_cmd.bits.toBits.getWidth
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val dbits = io.wide.req_data.bits.toBits.getWidth
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val rbits = io.wide.resp.bits.getWidth
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val mifDataBeats = params(MIFDataBeats)
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require(dbits >= abits && rbits >= dbits)
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val recv_cnt = Reg(init=UInt(0, log2Up((rbits+w-1)/w)))
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val data_recv_cnt = Reg(init=UInt(0, log2Up(mifDataBeats)))
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val adone = io.narrow.req.valid && recv_cnt === UInt((abits-1)/w)
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val ddone = io.narrow.req.valid && recv_cnt === UInt((dbits-1)/w)
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val rdone = io.narrow.resp.valid && recv_cnt === UInt((rbits-1)/w)
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val s_cmd_recv :: s_cmd :: s_data_recv :: s_data :: s_reply :: Nil = Enum(UInt(), 5)
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val state = Reg(init=s_cmd_recv)
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val in_buf = Reg(Bits())
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when (io.narrow.req.valid && io.narrow.req.ready || io.narrow.resp.valid) {
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recv_cnt := recv_cnt + UInt(1)
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in_buf := Cat(io.narrow.req.bits, in_buf((rbits+w-1)/w*w-1,w))
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}
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io.narrow.req.ready := state === s_cmd_recv || state === s_data_recv
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when (state === s_cmd_recv && adone) {
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state := s_cmd
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recv_cnt := UInt(0)
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}
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when (state === s_cmd && io.wide.req_cmd.ready) {
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state := Mux(io.wide.req_cmd.bits.rw, s_data_recv, s_reply)
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}
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when (state === s_data_recv && ddone) {
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state := s_data
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recv_cnt := UInt(0)
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}
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when (state === s_data && io.wide.req_data.ready) {
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state := s_data_recv
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when (data_recv_cnt === UInt(mifDataBeats-1)) {
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state := s_cmd_recv
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}
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data_recv_cnt := data_recv_cnt + UInt(1)
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}
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when (rdone) { // state === s_reply
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when (data_recv_cnt === UInt(mifDataBeats-1)) {
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state := s_cmd_recv
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}
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recv_cnt := UInt(0)
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data_recv_cnt := data_recv_cnt + UInt(1)
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}
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val req_cmd = in_buf >> UInt(((rbits+w-1)/w - (abits+w-1)/w)*w)
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io.wide.req_cmd.valid := state === s_cmd
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io.wide.req_cmd.bits := io.wide.req_cmd.bits.fromBits(req_cmd)
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io.wide.req_data.valid := state === s_data
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io.wide.req_data.bits.data := in_buf >> UInt(((rbits+w-1)/w - (dbits+w-1)/w)*w)
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val dataq = Module(new Queue(new MemResp, mifDataBeats))
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dataq.io.enq <> io.wide.resp
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dataq.io.deq.ready := recv_cnt === UInt((rbits-1)/w)
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io.narrow.resp.valid := dataq.io.deq.valid
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io.narrow.resp.bits := dataq.io.deq.bits.toBits >> (recv_cnt * UInt(w))
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}
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//Adapter betweewn an UncachedTileLinkIO and a mem controller MemIO
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class MemIOTileLinkIOConverter(qDepth: Int) extends TLModule with MIFParameters {
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val io = new Bundle {
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val tl = new ManagerTileLinkIO
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val mem = new MemIO
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}
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val dataBits = tlDataBits*tlDataBeats
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val dstIdBits = params(LNHeaderBits)
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require(tlDataBits*tlDataBeats == mifDataBits*mifDataBeats, "Data sizes between LLC and MC don't agree")
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require(dstIdBits + tlClientXactIdBits < mifTagBits, "MemIO converter is going truncate tags: " + dstIdBits + " + " + tlClientXactIdBits + " >= " + mifTagBits)
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io.tl.acquire.ready := Bool(false)
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io.tl.probe.valid := Bool(false)
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io.tl.release.ready := Bool(false)
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io.tl.finish.ready := Bool(true)
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io.mem.resp.ready := Bool(false)
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val gnt_arb = Module(new Arbiter(new GrantToDst, 2))
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io.tl.grant <> gnt_arb.io.out
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val dst_off = dstIdBits + tlClientXactIdBits
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val acq_has_data = io.tl.acquire.bits.hasData()
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val rel_has_data = io.tl.release.bits.hasData()
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// Decompose outgoing TL Acquires into MemIO cmd and data
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val active_out = Reg(init=Bool(false))
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val cmd_sent_out = Reg(init=Bool(false))
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val tag_out = Reg(UInt(width = mifTagBits))
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val addr_out = Reg(UInt(width = mifAddrBits))
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val has_data = Reg(init=Bool(false))
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val data_from_rel = Reg(init=Bool(false))
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val (tl_cnt_out, tl_wrap_out) =
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Counter((io.tl.acquire.fire() && acq_has_data) ||
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(io.tl.release.fire() && rel_has_data), tlDataBeats)
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val tl_done_out = Reg(init=Bool(false))
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val make_grant_ack = Reg(init=Bool(false))
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gnt_arb.io.in(1).valid := Bool(false)
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gnt_arb.io.in(1).bits := Grant(
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dst = (if(dstIdBits > 0) tag_out(dst_off, tlClientXactIdBits + 1) else UInt(0)),
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is_builtin_type = Bool(true),
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g_type = Mux(data_from_rel, Grant.voluntaryAckType, Grant.putAckType),
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client_xact_id = tag_out >> UInt(1),
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manager_xact_id = UInt(0))
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if(tlDataBits != mifDataBits || tlDataBeats != mifDataBeats) {
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val mem_cmd_q = Module(new Queue(new MemReqCmd, qDepth))
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val mem_data_q = Module(new Queue(new MemData, qDepth))
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mem_cmd_q.io.enq.valid := Bool(false)
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mem_data_q.io.enq.valid := Bool(false)
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val (mif_cnt_out, mif_wrap_out) = Counter(mem_data_q.io.enq.fire(), mifDataBeats)
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val mif_done_out = Reg(init=Bool(false))
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val tl_buf_out = Reg(Vec(io.tl.acquire.bits.data, tlDataBeats))
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val mif_buf_out = Vec.fill(mifDataBeats){ new MemData }
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mif_buf_out := mif_buf_out.fromBits(tl_buf_out.toBits)
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val mif_prog_out = (mif_cnt_out+UInt(1, width = log2Up(mifDataBeats+1)))*UInt(mifDataBits)
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val tl_prog_out = tl_cnt_out*UInt(tlDataBits)
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when(!active_out){
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io.tl.release.ready := Bool(true)
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io.tl.acquire.ready := !io.tl.release.valid
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when(io.tl.release.valid) {
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active_out := Bool(true)
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cmd_sent_out := Bool(false)
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tag_out := Cat(io.tl.release.bits.client_id,
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io.tl.release.bits.client_xact_id,
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io.tl.release.bits.isVoluntary())
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addr_out := io.tl.release.bits.addr_block
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has_data := rel_has_data
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data_from_rel := Bool(true)
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make_grant_ack := io.tl.release.bits.requiresAck()
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tl_done_out := tl_wrap_out
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tl_buf_out(tl_cnt_out) := io.tl.release.bits.data
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} .elsewhen(io.tl.acquire.valid) {
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active_out := Bool(true)
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cmd_sent_out := Bool(false)
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tag_out := Cat(io.tl.release.bits.client_id,
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io.tl.acquire.bits.client_xact_id,
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io.tl.acquire.bits.isBuiltInType())
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addr_out := io.tl.acquire.bits.addr_block
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has_data := acq_has_data
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data_from_rel := Bool(false)
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make_grant_ack := acq_has_data
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tl_done_out := tl_wrap_out
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tl_buf_out(tl_cnt_out) := io.tl.acquire.bits.data
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}
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}
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when(active_out) {
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mem_cmd_q.io.enq.valid := !cmd_sent_out
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cmd_sent_out := cmd_sent_out || mem_cmd_q.io.enq.fire()
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when(has_data) {
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when(!tl_done_out) {
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io.tl.acquire.ready := Bool(true)
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when(io.tl.acquire.valid) {
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tl_buf_out(tl_cnt_out) := Mux(data_from_rel,
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io.tl.release.bits.data,
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io.tl.acquire.bits.data)
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}
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}
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when(!mif_done_out) {
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mem_data_q.io.enq.valid := tl_done_out || mif_prog_out <= tl_prog_out
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}
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}
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when(tl_wrap_out) { tl_done_out := Bool(true) }
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when(mif_wrap_out) { mif_done_out := Bool(true) }
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when(tl_done_out && make_grant_ack) {
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gnt_arb.io.in(1).valid := Bool(true)
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when(gnt_arb.io.in(1).ready) { make_grant_ack := Bool(false) }
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}
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when(cmd_sent_out && (!has_data || mif_done_out) && !make_grant_ack) {
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active_out := Bool(false)
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}
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}
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mem_cmd_q.io.enq.bits.rw := has_data
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mem_cmd_q.io.enq.bits.tag := tag_out
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mem_cmd_q.io.enq.bits.addr := addr_out
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mem_data_q.io.enq.bits.data := mif_buf_out(mif_cnt_out).data
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io.mem.req_cmd <> mem_cmd_q.io.deq
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io.mem.req_data <> mem_data_q.io.deq
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} else { // Don't make the data buffers and try to flow cmd and data
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io.mem.req_cmd.valid := Bool(false)
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io.mem.req_data.valid := Bool(false)
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io.mem.req_cmd.bits.rw := has_data
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io.mem.req_cmd.bits.tag := tag_out
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io.mem.req_cmd.bits.addr := addr_out
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io.mem.req_data.bits.data := Mux(data_from_rel,
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io.tl.release.bits.data,
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io.tl.acquire.bits.data)
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when(!active_out){
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io.tl.release.ready := io.mem.req_data.ready
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io.tl.acquire.ready := io.mem.req_data.ready && !io.tl.release.valid
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io.mem.req_data.valid := (io.tl.release.valid && rel_has_data) ||
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(io.tl.acquire.valid && acq_has_data)
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when(io.mem.req_data.ready && (io.tl.release.valid || io.tl.acquire.valid)) {
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active_out := !io.mem.req_cmd.ready || io.mem.req_data.valid
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io.mem.req_cmd.valid := Bool(true)
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cmd_sent_out := io.mem.req_cmd.ready
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tl_done_out := tl_wrap_out
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when(io.tl.release.valid) {
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data_from_rel := Bool(true)
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make_grant_ack := io.tl.release.bits.requiresAck()
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io.mem.req_data.bits.data := io.tl.release.bits.data
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val tag = Cat(io.tl.release.bits.client_id,
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io.tl.release.bits.client_xact_id,
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io.tl.release.bits.isVoluntary())
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val addr = io.tl.release.bits.addr_block
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io.mem.req_cmd.bits.tag := tag
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io.mem.req_cmd.bits.addr := addr
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io.mem.req_cmd.bits.rw := rel_has_data
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := rel_has_data
|
||||
} .elsewhen(io.tl.acquire.valid) {
|
||||
data_from_rel := Bool(false)
|
||||
make_grant_ack := acq_has_data // i.e. is it a Put
|
||||
io.mem.req_data.bits.data := io.tl.acquire.bits.data
|
||||
io.mem.req_cmd.bits.rw := acq_has_data
|
||||
val tag = Cat(io.tl.acquire.bits.client_id,
|
||||
io.tl.acquire.bits.client_xact_id,
|
||||
io.tl.acquire.bits.isBuiltInType())
|
||||
val addr = io.tl.acquire.bits.addr_block
|
||||
io.mem.req_cmd.bits.tag := tag
|
||||
io.mem.req_cmd.bits.addr := addr
|
||||
io.mem.req_cmd.bits.rw := acq_has_data
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := acq_has_data
|
||||
}
|
||||
}
|
||||
}
|
||||
when(active_out) {
|
||||
io.mem.req_cmd.valid := !cmd_sent_out
|
||||
cmd_sent_out := cmd_sent_out || io.mem.req_cmd.fire()
|
||||
when(has_data && !tl_done_out) {
|
||||
when(data_from_rel) {
|
||||
io.tl.release.ready := io.mem.req_data.ready
|
||||
io.mem.req_data.valid := io.tl.release.valid
|
||||
} .otherwise {
|
||||
io.tl.acquire.ready := io.mem.req_data.ready
|
||||
io.mem.req_data.valid := io.tl.acquire.valid
|
||||
}
|
||||
}
|
||||
when(tl_wrap_out) { tl_done_out := Bool(true) }
|
||||
when(tl_done_out && make_grant_ack) {
|
||||
gnt_arb.io.in(1).valid := Bool(true) // TODO: grants for voluntary acks?
|
||||
when(gnt_arb.io.in(1).ready) { make_grant_ack := Bool(false) }
|
||||
}
|
||||
when(cmd_sent_out && (!has_data || tl_done_out) && !make_grant_ack) {
|
||||
active_out := Bool(false)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Aggregate incoming MemIO responses into TL Grants
|
||||
val active_in = Reg(init=Bool(false))
|
||||
val (tl_cnt_in, tl_wrap_in) = Counter(io.tl.grant.fire() && io.tl.grant.bits.hasMultibeatData(), tlDataBeats)
|
||||
val tag_in = Reg(UInt(width = mifTagBits))
|
||||
|
||||
if(tlDataBits != mifDataBits || tlDataBeats != mifDataBeats) {
|
||||
val (mif_cnt_in, mif_wrap_in) = Counter(io.mem.resp.fire(), mifDataBeats) // TODO: Assumes all resps have data
|
||||
val mif_done_in = Reg(init=Bool(false))
|
||||
val mif_buf_in = Reg(Vec(new MemData, mifDataBeats))
|
||||
val tl_buf_in = Vec.fill(tlDataBeats){ io.tl.acquire.bits.data }
|
||||
tl_buf_in := tl_buf_in.fromBits(mif_buf_in.toBits)
|
||||
val tl_prog_in = (tl_cnt_in+UInt(1, width = log2Up(tlDataBeats+1)))*UInt(tlDataBits)
|
||||
val mif_prog_in = mif_cnt_in*UInt(mifDataBits)
|
||||
gnt_arb.io.in(0).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) tag_in(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = tag_in(0),
|
||||
g_type = Mux(tag_in(0), Grant.getDataBlockType, UInt(0)), // TODO: Assumes MI or MEI protocol
|
||||
client_xact_id = tag_in >> UInt(1),
|
||||
manager_xact_id = UInt(0),
|
||||
addr_beat = tl_cnt_in,
|
||||
data = tl_buf_in(tl_cnt_in))
|
||||
|
||||
when(!active_in) {
|
||||
io.mem.resp.ready := Bool(true)
|
||||
when(io.mem.resp.valid) {
|
||||
active_in := Bool(true)
|
||||
mif_done_in := mif_wrap_in
|
||||
tag_in := io.mem.resp.bits.tag
|
||||
mif_buf_in(tl_cnt_in).data := io.mem.resp.bits.data
|
||||
}
|
||||
}
|
||||
when(active_in) {
|
||||
gnt_arb.io.in(0).valid := mif_done_in || tl_prog_in <= mif_prog_in
|
||||
when(!mif_done_in) {
|
||||
io.mem.resp.ready := Bool(true)
|
||||
when(io.mem.resp.valid) {
|
||||
mif_buf_in(mif_cnt_in).data := io.mem.resp.bits.data
|
||||
}
|
||||
}
|
||||
when(mif_wrap_in) { mif_done_in := Bool(true) }
|
||||
when(tl_wrap_in) { active_in := Bool(false) }
|
||||
}
|
||||
} else { // Don't generate all the uneeded data buffers and flow resp
|
||||
gnt_arb.io.in(0).valid := io.mem.resp.valid
|
||||
io.mem.resp.ready := gnt_arb.io.in(0).ready
|
||||
gnt_arb.io.in(0).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) io.mem.resp.bits.tag(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = io.mem.resp.bits.tag(0),
|
||||
g_type = Mux(io.mem.resp.bits.tag(0), Grant.getDataBlockType, UInt(0)), // TODO: Assumes MI or MEI protocol
|
||||
client_xact_id = io.mem.resp.bits.tag >> UInt(1),
|
||||
manager_xact_id = UInt(0),
|
||||
addr_beat = tl_cnt_in,
|
||||
data = io.mem.resp.bits.data)
|
||||
}
|
||||
}
|
||||
|
||||
class HellaFlowQueue[T <: Data](val entries: Int)(data: => T) extends Module
|
||||
{
|
||||
val io = new QueueIO(data, entries)
|
||||
require(entries > 1)
|
||||
|
||||
val do_flow = Wire(Bool())
|
||||
val do_enq = io.enq.fire() && !do_flow
|
||||
val do_deq = io.deq.fire() && !do_flow
|
||||
|
||||
val maybe_full = Reg(init=Bool(false))
|
||||
val enq_ptr = Counter(do_enq, entries)._1
|
||||
val (deq_ptr, deq_done) = Counter(do_deq, entries)
|
||||
when (do_enq != do_deq) { maybe_full := do_enq }
|
||||
|
||||
val ptr_match = enq_ptr === deq_ptr
|
||||
val empty = ptr_match && !maybe_full
|
||||
val full = ptr_match && maybe_full
|
||||
val atLeastTwo = full || enq_ptr - deq_ptr >= UInt(2)
|
||||
do_flow := empty && io.deq.ready
|
||||
|
||||
val ram = SeqMem(data, entries)
|
||||
when (do_enq) { ram.write(enq_ptr, io.enq.bits) }
|
||||
|
||||
val ren = io.deq.ready && (atLeastTwo || !io.deq.valid && !empty)
|
||||
val raddr = Mux(io.deq.valid, Mux(deq_done, UInt(0), deq_ptr + UInt(1)), deq_ptr)
|
||||
val ram_out_valid = Reg(next = ren)
|
||||
|
||||
io.deq.valid := Mux(empty, io.enq.valid, ram_out_valid)
|
||||
io.enq.ready := !full
|
||||
io.deq.bits := Mux(empty, io.enq.bits, ram.read(raddr, ren))
|
||||
}
|
||||
|
||||
class HellaQueue[T <: Data](val entries: Int)(data: => T) extends Module
|
||||
{
|
||||
val io = new QueueIO(data, entries)
|
||||
|
||||
val fq = Module(new HellaFlowQueue(entries)(data))
|
||||
io.enq <> fq.io.enq
|
||||
io.deq <> Queue(fq.io.deq, 1, pipe = true)
|
||||
}
|
||||
|
||||
object HellaQueue
|
||||
{
|
||||
def apply[T <: Data](enq: DecoupledIO[T], entries: Int) = {
|
||||
val q = Module((new HellaQueue(entries)) { enq.bits })
|
||||
q.io.enq.valid := enq.valid // not using <> so that override is allowed
|
||||
q.io.enq.bits := enq.bits
|
||||
enq.ready := q.io.enq.ready
|
||||
q.io.deq
|
||||
}
|
||||
}
|
||||
|
||||
class MemIOArbiter(val arbN: Int) extends MIFModule {
|
||||
val io = new Bundle {
|
||||
val inner = Vec.fill(arbN){new MemIO}.flip
|
||||
val outer = new MemIO
|
||||
}
|
||||
|
||||
if(arbN > 1) {
|
||||
val cmd_arb = Module(new RRArbiter(new MemReqCmd, arbN))
|
||||
val choice_q = Module(new Queue(cmd_arb.io.chosen, 4))
|
||||
val (data_cnt, data_done) = Counter(io.outer.req_data.fire(), mifDataBeats)
|
||||
|
||||
io.inner.map(_.req_cmd).zipWithIndex.zip(cmd_arb.io.in).map{ case ((req, id), arb) => {
|
||||
arb.valid := req.valid
|
||||
arb.bits := req.bits
|
||||
arb.bits.tag := Cat(req.bits.tag, UInt(id))
|
||||
req.ready := arb.ready
|
||||
}}
|
||||
io.outer.req_cmd.bits := cmd_arb.io.out.bits
|
||||
io.outer.req_cmd.valid := cmd_arb.io.out.valid && choice_q.io.enq.ready
|
||||
cmd_arb.io.out.ready := io.outer.req_cmd.ready && choice_q.io.enq.ready
|
||||
choice_q.io.enq.bits := cmd_arb.io.chosen
|
||||
choice_q.io.enq.valid := cmd_arb.io.out.fire() && cmd_arb.io.out.bits.rw
|
||||
|
||||
io.outer.req_data.bits := io.inner(choice_q.io.deq.bits).req_data.bits
|
||||
io.outer.req_data.valid := io.inner(choice_q.io.deq.bits).req_data.valid && choice_q.io.deq.valid
|
||||
io.inner.map(_.req_data.ready).zipWithIndex.foreach {
|
||||
case(r, i) => r := UInt(i) === choice_q.io.deq.bits && choice_q.io.deq.valid
|
||||
}
|
||||
choice_q.io.deq.ready := data_done
|
||||
|
||||
io.outer.resp.ready := Bool(false)
|
||||
for (i <- 0 until arbN) {
|
||||
io.inner(i).resp.valid := Bool(false)
|
||||
when(io.outer.resp.bits.tag(log2Up(arbN)-1,0).toUInt === UInt(i)) {
|
||||
io.inner(i).resp.valid := io.outer.resp.valid
|
||||
io.outer.resp.ready := io.inner(i).resp.ready
|
||||
}
|
||||
io.inner(i).resp.bits := io.outer.resp.bits
|
||||
io.inner(i).resp.bits.tag := io.outer.resp.bits.tag >> UInt(log2Up(arbN))
|
||||
}
|
||||
} else { io.inner.head <> io.outer }
|
||||
}
|
||||
|
||||
object MemIOMemPipeIOConverter {
|
||||
def apply(in: MemPipeIO): MemIO = {
|
||||
val out = Wire(new MemIO())
|
||||
in.resp.valid := out.resp.valid
|
||||
in.resp.bits := out.resp.bits
|
||||
out.resp.ready := Bool(true)
|
||||
out.req_cmd.valid := in.req_cmd.valid
|
||||
out.req_cmd.bits := in.req_cmd.bits
|
||||
in.req_cmd.ready := out.req_cmd.ready
|
||||
out.req_data.valid := in.req_data.valid
|
||||
out.req_data.bits := in.req_data.bits
|
||||
in.req_data.ready := out.req_data.ready
|
||||
out
|
||||
}
|
||||
}
|
||||
|
||||
class MemPipeIOMemIOConverter(numRequests: Int) extends MIFModule {
|
||||
val io = new Bundle {
|
||||
val cpu = new MemIO().flip
|
||||
val mem = new MemPipeIO
|
||||
}
|
||||
|
||||
val numEntries = numRequests * mifDataBeats
|
||||
val size = log2Down(numEntries) + 1
|
||||
|
||||
val inc = Wire(Bool())
|
||||
val dec = Wire(Bool())
|
||||
val count = Reg(init=UInt(numEntries, size))
|
||||
val watermark = count >= UInt(mifDataBeats)
|
||||
|
||||
when (inc && !dec) {
|
||||
count := count + UInt(1)
|
||||
}
|
||||
when (!inc && dec) {
|
||||
count := count - UInt(mifDataBeats)
|
||||
}
|
||||
when (inc && dec) {
|
||||
count := count - UInt(mifDataBeats-1)
|
||||
}
|
||||
|
||||
val cmdq_mask = io.cpu.req_cmd.bits.rw || watermark
|
||||
|
||||
io.mem.req_cmd.valid := io.cpu.req_cmd.valid && cmdq_mask
|
||||
io.cpu.req_cmd.ready := io.mem.req_cmd.ready && cmdq_mask
|
||||
io.mem.req_cmd.bits := io.cpu.req_cmd.bits
|
||||
|
||||
io.mem.req_data <> io.cpu.req_data
|
||||
|
||||
// Have separate queues to allow for different mem implementations
|
||||
val resp_data_q = Module((new HellaQueue(numEntries)) { new MemData })
|
||||
resp_data_q.io.enq.valid := io.mem.resp.valid
|
||||
resp_data_q.io.enq.bits.data := io.mem.resp.bits.data
|
||||
|
||||
val resp_tag_q = Module((new HellaQueue(numEntries)) { new MemTag })
|
||||
resp_tag_q.io.enq.valid := io.mem.resp.valid
|
||||
resp_tag_q.io.enq.bits.tag := io.mem.resp.bits.tag
|
||||
|
||||
io.cpu.resp.valid := resp_data_q.io.deq.valid && resp_tag_q.io.deq.valid
|
||||
io.cpu.resp.bits.data := resp_data_q.io.deq.bits.data
|
||||
io.cpu.resp.bits.tag := resp_tag_q.io.deq.bits.tag
|
||||
resp_data_q.io.deq.ready := io.cpu.resp.ready
|
||||
resp_tag_q.io.deq.ready := io.cpu.resp.ready
|
||||
|
||||
inc := resp_data_q.io.deq.fire() && resp_tag_q.io.deq.fire()
|
||||
dec := io.mem.req_cmd.fire() && !io.mem.req_cmd.bits.rw
|
||||
}
|
||||
|
||||
class MemPipeIOTileLinkIOConverter(outstanding: Int) extends MIFModule {
|
||||
val io = new Bundle {
|
||||
val tl = new ManagerTileLinkIO
|
||||
val mem = new MemPipeIO
|
||||
}
|
||||
|
||||
val a = Module(new MemIOTileLinkIOConverter(1))
|
||||
val b = Module(new MemPipeIOMemIOConverter(outstanding))
|
||||
a.io.tl <> io.tl
|
||||
b.io.cpu.req_cmd <> Queue(a.io.mem.req_cmd, 2, pipe=true)
|
||||
b.io.cpu.req_data <> Queue(a.io.mem.req_data, mifDataBeats, pipe=true)
|
||||
a.io.mem.resp <> b.io.cpu.resp
|
||||
b.io.mem <> io.mem
|
||||
}
|
||||
|
|
@ -1,295 +0,0 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
package uncore
|
||||
import Chisel._
|
||||
import scala.math.max
|
||||
|
||||
case object NASTIDataBits extends Field[Int]
|
||||
case object NASTIAddrBits extends Field[Int]
|
||||
case object NASTIIdBits extends Field[Int]
|
||||
|
||||
trait NASTIParameters extends UsesParameters {
|
||||
val nastiXDataBits = params(NASTIDataBits)
|
||||
val nastiWStrobeBits = nastiXDataBits / 8
|
||||
val nastiXAddrBits = params(NASTIAddrBits)
|
||||
val nastiWIdBits = params(NASTIIdBits)
|
||||
val nastiRIdBits = params(NASTIIdBits)
|
||||
val nastiXIdBits = max(nastiWIdBits, nastiRIdBits)
|
||||
val nastiXUserBits = 1
|
||||
val nastiAWUserBits = nastiXUserBits
|
||||
val nastiWUserBits = nastiXUserBits
|
||||
val nastiBUserBits = nastiXUserBits
|
||||
val nastiARUserBits = nastiXUserBits
|
||||
val nastiRUserBits = nastiXUserBits
|
||||
val nastiXLenBits = 8
|
||||
val nastiXSizeBits = 3
|
||||
val nastiXBurstBits = 2
|
||||
val nastiXCacheBits = 4
|
||||
val nastiXProtBits = 3
|
||||
val nastiXQosBits = 4
|
||||
val nastiXRegionBits = 4
|
||||
val nastiXRespBits = 2
|
||||
|
||||
def bytesToXSize(bytes: UInt) = MuxLookup(bytes, UInt("b111"), Array(
|
||||
UInt(1) -> UInt(0),
|
||||
UInt(2) -> UInt(1),
|
||||
UInt(4) -> UInt(2),
|
||||
UInt(8) -> UInt(3),
|
||||
UInt(16) -> UInt(4),
|
||||
UInt(32) -> UInt(5),
|
||||
UInt(64) -> UInt(6),
|
||||
UInt(128) -> UInt(7)))
|
||||
}
|
||||
|
||||
abstract class NASTIBundle extends Bundle with NASTIParameters
|
||||
abstract class NASTIModule extends Module with NASTIParameters
|
||||
|
||||
trait NASTIChannel extends NASTIBundle
|
||||
trait NASTIMasterToSlaveChannel extends NASTIChannel
|
||||
trait NASTISlaveToMasterChannel extends NASTIChannel
|
||||
|
||||
class NASTIMasterIO extends Bundle {
|
||||
val aw = Decoupled(new NASTIWriteAddressChannel)
|
||||
val w = Decoupled(new NASTIWriteDataChannel)
|
||||
val b = Decoupled(new NASTIWriteResponseChannel).flip
|
||||
val ar = Decoupled(new NASTIReadAddressChannel)
|
||||
val r = Decoupled(new NASTIReadDataChannel).flip
|
||||
}
|
||||
|
||||
class NASTISlaveIO extends NASTIMasterIO { flip() }
|
||||
|
||||
trait HasNASTIMetadata extends NASTIBundle {
|
||||
val addr = UInt(width = nastiXAddrBits)
|
||||
val len = UInt(width = nastiXLenBits)
|
||||
val size = UInt(width = nastiXSizeBits)
|
||||
val burst = UInt(width = nastiXBurstBits)
|
||||
val lock = Bool()
|
||||
val cache = UInt(width = nastiXCacheBits)
|
||||
val prot = UInt(width = nastiXProtBits)
|
||||
val qos = UInt(width = nastiXQosBits)
|
||||
val region = UInt(width = nastiXRegionBits)
|
||||
}
|
||||
|
||||
trait HasNASTIData extends NASTIBundle {
|
||||
val data = UInt(width = nastiXDataBits)
|
||||
val last = Bool()
|
||||
}
|
||||
|
||||
class NASTIAddressChannel extends NASTIMasterToSlaveChannel with HasNASTIMetadata
|
||||
|
||||
class NASTIResponseChannel extends NASTISlaveToMasterChannel {
|
||||
val resp = UInt(width = nastiXRespBits)
|
||||
}
|
||||
|
||||
class NASTIWriteAddressChannel extends NASTIAddressChannel {
|
||||
val id = UInt(width = nastiWIdBits)
|
||||
val user = UInt(width = nastiAWUserBits)
|
||||
}
|
||||
|
||||
class NASTIWriteDataChannel extends NASTIMasterToSlaveChannel with HasNASTIData {
|
||||
val strb = UInt(width = nastiWStrobeBits)
|
||||
val user = UInt(width = nastiWUserBits)
|
||||
}
|
||||
|
||||
class NASTIWriteResponseChannel extends NASTIResponseChannel {
|
||||
val id = UInt(width = nastiWIdBits)
|
||||
val user = UInt(width = nastiBUserBits)
|
||||
}
|
||||
|
||||
class NASTIReadAddressChannel extends NASTIAddressChannel {
|
||||
val id = UInt(width = nastiRIdBits)
|
||||
val user = UInt(width = nastiARUserBits)
|
||||
}
|
||||
|
||||
class NASTIReadDataChannel extends NASTIResponseChannel with HasNASTIData {
|
||||
val id = UInt(width = nastiRIdBits)
|
||||
val user = UInt(width = nastiRUserBits)
|
||||
}
|
||||
|
||||
class MemIONASTISlaveIOConverter extends MIFModule with NASTIParameters {
|
||||
val io = new Bundle {
|
||||
val nasti = new NASTISlaveIO
|
||||
val mem = new MemIO
|
||||
}
|
||||
|
||||
require(mifDataBits == nastiXDataBits, "Data sizes between LLC and MC don't agree")
|
||||
val (mif_cnt_out, mif_wrap_out) = Counter(io.mem.resp.fire(), mifDataBeats)
|
||||
|
||||
io.mem.req_cmd.bits.addr := Mux(io.nasti.aw.valid, io.nasti.aw.bits.addr, io.nasti.ar.bits.addr) >>
|
||||
UInt(params(CacheBlockOffsetBits))
|
||||
io.mem.req_cmd.bits.tag := Mux(io.nasti.aw.valid, io.nasti.aw.bits.id, io.nasti.ar.bits.id)
|
||||
io.mem.req_cmd.bits.rw := io.nasti.aw.valid
|
||||
io.mem.req_cmd.valid := (io.nasti.aw.valid && io.nasti.b.ready) || io.nasti.ar.valid
|
||||
io.nasti.ar.ready := io.mem.req_cmd.ready && !io.nasti.aw.valid
|
||||
io.nasti.aw.ready := io.mem.req_cmd.ready && io.nasti.b.ready
|
||||
|
||||
io.nasti.b.valid := io.nasti.aw.valid && io.mem.req_cmd.ready
|
||||
io.nasti.b.bits.id := io.nasti.aw.bits.id
|
||||
io.nasti.b.bits.resp := UInt(0)
|
||||
|
||||
io.nasti.w.ready := io.mem.req_data.ready
|
||||
io.mem.req_data.valid := io.nasti.w.valid
|
||||
io.mem.req_data.bits.data := io.nasti.w.bits.data
|
||||
assert(!io.nasti.w.valid || io.nasti.w.bits.strb.andR, "MemIO must write full cache line")
|
||||
|
||||
io.nasti.r.valid := io.mem.resp.valid
|
||||
io.nasti.r.bits.data := io.mem.resp.bits.data
|
||||
io.nasti.r.bits.last := mif_wrap_out
|
||||
io.nasti.r.bits.id := io.mem.resp.bits.tag
|
||||
io.nasti.r.bits.resp := UInt(0)
|
||||
io.mem.resp.ready := io.nasti.r.ready
|
||||
}
|
||||
|
||||
class NASTIMasterIOTileLinkIOConverter extends TLModule with NASTIParameters {
|
||||
val io = new Bundle {
|
||||
val tl = new ManagerTileLinkIO
|
||||
val nasti = new NASTIMasterIO
|
||||
}
|
||||
|
||||
val dataBits = tlDataBits*tlDataBeats
|
||||
val dstIdBits = params(LNHeaderBits)
|
||||
require(tlDataBits == nastiXDataBits, "Data sizes between LLC and MC don't agree") // TODO: remove this restriction
|
||||
require(tlDataBeats < (1 << nastiXLenBits), "Can't have that many beats")
|
||||
require(dstIdBits + tlClientXactIdBits < nastiXIdBits, "NASTIMasterIO converter is going truncate tags: " + dstIdBits + " + " + tlClientXactIdBits + " >= " + nastiXIdBits)
|
||||
|
||||
io.tl.acquire.ready := Bool(false)
|
||||
io.tl.probe.valid := Bool(false)
|
||||
io.tl.release.ready := Bool(false)
|
||||
io.tl.finish.ready := Bool(true)
|
||||
|
||||
io.nasti.b.ready := Bool(false)
|
||||
io.nasti.r.ready := Bool(false)
|
||||
io.nasti.ar.valid := Bool(false)
|
||||
io.nasti.aw.valid := Bool(false)
|
||||
io.nasti.w.valid := Bool(false)
|
||||
|
||||
val dst_off = dstIdBits + tlClientXactIdBits
|
||||
val acq_has_data = io.tl.acquire.bits.hasData()
|
||||
val rel_has_data = io.tl.release.bits.hasData()
|
||||
val is_write = io.tl.release.valid || (io.tl.acquire.valid && acq_has_data)
|
||||
|
||||
// Decompose outgoing TL Acquires into NASTI address and data channels
|
||||
val active_out = Reg(init=Bool(false))
|
||||
val cmd_sent_out = Reg(init=Bool(false))
|
||||
val tag_out = Reg(UInt(width = nastiXIdBits))
|
||||
val addr_out = Reg(UInt(width = nastiXAddrBits))
|
||||
val has_data = Reg(init=Bool(false))
|
||||
val data_from_rel = Reg(init=Bool(false))
|
||||
val (tl_cnt_out, tl_wrap_out) =
|
||||
Counter((io.tl.acquire.fire() && acq_has_data) ||
|
||||
(io.tl.release.fire() && rel_has_data), tlDataBeats)
|
||||
val tl_done_out = Reg(init=Bool(false))
|
||||
|
||||
io.nasti.ar.bits.id := tag_out
|
||||
io.nasti.ar.bits.addr := addr_out
|
||||
io.nasti.ar.bits.len := Mux(has_data, UInt(tlDataBeats-1), UInt(0))
|
||||
io.nasti.ar.bits.size := UInt(log2Ceil(tlDataBits))
|
||||
io.nasti.ar.bits.burst := UInt("b01")
|
||||
io.nasti.ar.bits.lock := Bool(false)
|
||||
io.nasti.ar.bits.cache := UInt("b0000")
|
||||
io.nasti.ar.bits.prot := UInt("b000")
|
||||
io.nasti.ar.bits.qos := UInt("b0000")
|
||||
io.nasti.ar.bits.region := UInt("b0000")
|
||||
io.nasti.ar.bits.user := UInt(0)
|
||||
io.nasti.aw.bits := io.nasti.ar.bits
|
||||
io.nasti.w.bits.strb := Mux(data_from_rel, SInt(-1), io.tl.acquire.bits.wmask())
|
||||
io.nasti.w.bits.data := Mux(data_from_rel, io.tl.release.bits.data, io.tl.acquire.bits.data)
|
||||
io.nasti.w.bits.last := tl_wrap_out
|
||||
|
||||
when(!active_out){
|
||||
io.tl.release.ready := io.nasti.w.ready
|
||||
io.tl.acquire.ready := io.nasti.w.ready && !io.tl.release.valid
|
||||
io.nasti.w.valid := (io.tl.release.valid && rel_has_data) ||
|
||||
(io.tl.acquire.valid && acq_has_data)
|
||||
when(io.nasti.w.ready && (io.tl.release.valid || io.tl.acquire.valid)) {
|
||||
active_out := (!is_write && !io.nasti.ar.ready) ||
|
||||
(is_write && !(io.nasti.aw.ready && io.nasti.w.ready)) ||
|
||||
(io.nasti.w.valid && Bool(tlDataBeats > 1))
|
||||
io.nasti.aw.valid := is_write
|
||||
io.nasti.ar.valid := !is_write
|
||||
cmd_sent_out := (!is_write && io.nasti.ar.ready) || (is_write && io.nasti.aw.ready)
|
||||
tl_done_out := tl_wrap_out
|
||||
when(io.tl.release.valid) {
|
||||
data_from_rel := Bool(true)
|
||||
io.nasti.w.bits.data := io.tl.release.bits.data
|
||||
io.nasti.w.bits.strb := SInt(-1)
|
||||
val tag = Cat(io.tl.release.bits.client_id,
|
||||
io.tl.release.bits.client_xact_id,
|
||||
io.tl.release.bits.isVoluntary())
|
||||
val addr = io.tl.release.bits.full_addr()
|
||||
io.nasti.aw.bits.id := tag
|
||||
io.nasti.aw.bits.addr := addr
|
||||
io.nasti.aw.bits.len := UInt(tlDataBeats-1)
|
||||
io.nasti.aw.bits.size := MT_Q
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := rel_has_data
|
||||
} .elsewhen(io.tl.acquire.valid) {
|
||||
data_from_rel := Bool(false)
|
||||
io.nasti.w.bits.data := io.tl.acquire.bits.data
|
||||
io.nasti.w.bits.strb := io.tl.acquire.bits.wmask()
|
||||
val tag = Cat(io.tl.acquire.bits.client_id,
|
||||
io.tl.acquire.bits.client_xact_id,
|
||||
io.tl.acquire.bits.isBuiltInType())
|
||||
val addr = io.tl.acquire.bits.full_addr()
|
||||
when(is_write) {
|
||||
io.nasti.aw.bits.id := tag
|
||||
io.nasti.aw.bits.addr := addr
|
||||
io.nasti.aw.bits.len := Mux(io.tl.acquire.bits.isBuiltInType(Acquire.putBlockType),
|
||||
UInt(tlDataBeats-1), UInt(0))
|
||||
io.nasti.aw.bits.size := bytesToXSize(PopCount(io.tl.acquire.bits.wmask()))
|
||||
} .otherwise {
|
||||
io.nasti.ar.bits.id := tag
|
||||
io.nasti.ar.bits.addr := addr
|
||||
io.nasti.ar.bits.len := Mux(io.tl.acquire.bits.isBuiltInType(Acquire.getBlockType),
|
||||
UInt(tlDataBeats-1), UInt(0))
|
||||
io.nasti.ar.bits.size := io.tl.acquire.bits.op_size()
|
||||
}
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := acq_has_data
|
||||
}
|
||||
}
|
||||
}
|
||||
when(active_out) {
|
||||
io.nasti.ar.valid := !cmd_sent_out && !has_data
|
||||
io.nasti.aw.valid := !cmd_sent_out && has_data
|
||||
cmd_sent_out := cmd_sent_out || io.nasti.ar.fire() || io.nasti.aw.fire()
|
||||
when(has_data && !tl_done_out) {
|
||||
when(data_from_rel) {
|
||||
io.tl.release.ready := io.nasti.w.ready
|
||||
io.nasti.w.valid := io.tl.release.valid
|
||||
} .otherwise {
|
||||
io.tl.acquire.ready := io.nasti.w.ready
|
||||
io.nasti.w.valid := io.tl.acquire.valid
|
||||
}
|
||||
}
|
||||
when(tl_wrap_out) { tl_done_out := Bool(true) }
|
||||
when(cmd_sent_out && (!has_data || tl_done_out)) { active_out := Bool(false) }
|
||||
}
|
||||
|
||||
// Aggregate incoming NASTI responses into TL Grants
|
||||
val (tl_cnt_in, tl_wrap_in) = Counter(io.tl.grant.fire() && io.tl.grant.bits.hasMultibeatData(), tlDataBeats)
|
||||
val gnt_arb = Module(new Arbiter(new GrantToDst, 2))
|
||||
io.tl.grant <> gnt_arb.io.out
|
||||
|
||||
gnt_arb.io.in(0).valid := io.nasti.r.valid
|
||||
io.nasti.r.ready := gnt_arb.io.in(0).ready
|
||||
gnt_arb.io.in(0).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) io.nasti.r.bits.id(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = io.nasti.r.bits.id(0),
|
||||
g_type = Mux(io.nasti.r.bits.id(0), Grant.getDataBlockType, UInt(0)), // TODO: Assumes MI or MEI protocol
|
||||
client_xact_id = io.nasti.r.bits.id >> UInt(1),
|
||||
manager_xact_id = UInt(0),
|
||||
addr_beat = tl_cnt_in,
|
||||
data = io.nasti.r.bits.data)
|
||||
|
||||
gnt_arb.io.in(1).valid := io.nasti.b.valid
|
||||
io.nasti.b.ready := gnt_arb.io.in(1).ready
|
||||
gnt_arb.io.in(1).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) io.nasti.b.bits.id(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = Bool(true),
|
||||
g_type = Mux(io.nasti.b.bits.id(0), Grant.voluntaryAckType, Grant.putAckType),
|
||||
client_xact_id = io.nasti.b.bits.id >> UInt(1),
|
||||
manager_xact_id = UInt(0))
|
||||
}
|
||||
|
|
@ -1,70 +0,0 @@
|
|||
// See LICENSE for license details.
|
||||
|
||||
package uncore
|
||||
import Chisel._
|
||||
|
||||
class SlowIO[T <: Data](val divisor_max: Int)(data: => T) extends Module
|
||||
{
|
||||
val io = new Bundle {
|
||||
val out_fast = Decoupled(data).flip
|
||||
val out_slow = Decoupled(data)
|
||||
val in_fast = Decoupled(data)
|
||||
val in_slow = Decoupled(data).flip
|
||||
val clk_slow = Bool(OUTPUT)
|
||||
val set_divisor = Valid(Bits(width = 32)).flip
|
||||
val divisor = Bits(OUTPUT, 32)
|
||||
}
|
||||
|
||||
require(divisor_max >= 8 && divisor_max <= 65536 && isPow2(divisor_max))
|
||||
val divisor = Reg(init=UInt(divisor_max-1))
|
||||
val d_shadow = Reg(init=UInt(divisor_max-1))
|
||||
val hold = Reg(init=UInt(divisor_max/4-1))
|
||||
val h_shadow = Reg(init=UInt(divisor_max/4-1))
|
||||
when (io.set_divisor.valid) {
|
||||
d_shadow := io.set_divisor.bits(log2Up(divisor_max)-1, 0).toUInt
|
||||
h_shadow := io.set_divisor.bits(log2Up(divisor_max)-1+16, 16).toUInt
|
||||
}
|
||||
io.divisor := hold << UInt(16) | divisor
|
||||
|
||||
val count = Reg{UInt(width = log2Up(divisor_max))}
|
||||
val myclock = Reg{Bool()}
|
||||
count := count + UInt(1)
|
||||
|
||||
val rising = count === (divisor >> UInt(1))
|
||||
val falling = count === divisor
|
||||
val held = count === (divisor >> UInt(1)) + hold
|
||||
|
||||
when (falling) {
|
||||
divisor := d_shadow
|
||||
hold := h_shadow
|
||||
count := UInt(0)
|
||||
myclock := Bool(false)
|
||||
}
|
||||
when (rising) {
|
||||
myclock := Bool(true)
|
||||
}
|
||||
|
||||
val in_slow_rdy = Reg(init=Bool(false))
|
||||
val out_slow_val = Reg(init=Bool(false))
|
||||
val out_slow_bits = Reg(data)
|
||||
|
||||
val fromhost_q = Module(new Queue(data,1))
|
||||
fromhost_q.io.enq.valid := rising && (io.in_slow.valid && in_slow_rdy || this.reset)
|
||||
fromhost_q.io.enq.bits := io.in_slow.bits
|
||||
fromhost_q.io.deq <> io.in_fast
|
||||
|
||||
val tohost_q = Module(new Queue(data,1))
|
||||
tohost_q.io.enq <> io.out_fast
|
||||
tohost_q.io.deq.ready := rising && io.out_slow.ready && out_slow_val
|
||||
|
||||
when (held) {
|
||||
in_slow_rdy := fromhost_q.io.enq.ready
|
||||
out_slow_val := tohost_q.io.deq.valid
|
||||
out_slow_bits := Mux(this.reset, fromhost_q.io.deq.bits, tohost_q.io.deq.bits)
|
||||
}
|
||||
|
||||
io.in_slow.ready := in_slow_rdy
|
||||
io.out_slow.valid := out_slow_val
|
||||
io.out_slow.bits := out_slow_bits
|
||||
io.clk_slow := myclock
|
||||
}
|
||||
|
|
@ -2,6 +2,7 @@
|
|||
|
||||
package uncore
|
||||
import Chisel._
|
||||
import junctions._
|
||||
import scala.math.max
|
||||
|
||||
/** Parameters exposed to the top-level design, set based on
|
||||
|
|
@ -1237,3 +1238,422 @@ trait HasDataBeatCounters {
|
|||
(cnt > UInt(0), up_idx, up_done, down_idx, down_done)
|
||||
}
|
||||
}
|
||||
|
||||
class NASTIMasterIOTileLinkIOConverter extends TLModule with NASTIParameters {
|
||||
val io = new Bundle {
|
||||
val tl = new ManagerTileLinkIO
|
||||
val nasti = new NASTIMasterIO
|
||||
}
|
||||
|
||||
val dataBits = tlDataBits*tlDataBeats
|
||||
val dstIdBits = params(LNHeaderBits)
|
||||
require(tlDataBits == nastiXDataBits, "Data sizes between LLC and MC don't agree") // TODO: remove this restriction
|
||||
require(tlDataBeats < (1 << nastiXLenBits), "Can't have that many beats")
|
||||
require(dstIdBits + tlClientXactIdBits < nastiXIdBits, "NASTIMasterIO converter is going truncate tags: " + dstIdBits + " + " + tlClientXactIdBits + " >= " + nastiXIdBits)
|
||||
|
||||
io.tl.acquire.ready := Bool(false)
|
||||
io.tl.probe.valid := Bool(false)
|
||||
io.tl.release.ready := Bool(false)
|
||||
io.tl.finish.ready := Bool(true)
|
||||
|
||||
io.nasti.b.ready := Bool(false)
|
||||
io.nasti.r.ready := Bool(false)
|
||||
io.nasti.ar.valid := Bool(false)
|
||||
io.nasti.aw.valid := Bool(false)
|
||||
io.nasti.w.valid := Bool(false)
|
||||
|
||||
val dst_off = dstIdBits + tlClientXactIdBits
|
||||
val acq_has_data = io.tl.acquire.bits.hasData()
|
||||
val rel_has_data = io.tl.release.bits.hasData()
|
||||
val is_write = io.tl.release.valid || (io.tl.acquire.valid && acq_has_data)
|
||||
|
||||
// Decompose outgoing TL Acquires into NASTI address and data channels
|
||||
val active_out = Reg(init=Bool(false))
|
||||
val cmd_sent_out = Reg(init=Bool(false))
|
||||
val tag_out = Reg(UInt(width = nastiXIdBits))
|
||||
val addr_out = Reg(UInt(width = nastiXAddrBits))
|
||||
val has_data = Reg(init=Bool(false))
|
||||
val data_from_rel = Reg(init=Bool(false))
|
||||
val (tl_cnt_out, tl_wrap_out) =
|
||||
Counter((io.tl.acquire.fire() && acq_has_data) ||
|
||||
(io.tl.release.fire() && rel_has_data), tlDataBeats)
|
||||
val tl_done_out = Reg(init=Bool(false))
|
||||
|
||||
io.nasti.ar.bits.id := tag_out
|
||||
io.nasti.ar.bits.addr := addr_out
|
||||
io.nasti.ar.bits.len := Mux(has_data, UInt(tlDataBeats-1), UInt(0))
|
||||
io.nasti.ar.bits.size := UInt(log2Ceil(tlDataBits))
|
||||
io.nasti.ar.bits.burst := UInt("b01")
|
||||
io.nasti.ar.bits.lock := Bool(false)
|
||||
io.nasti.ar.bits.cache := UInt("b0000")
|
||||
io.nasti.ar.bits.prot := UInt("b000")
|
||||
io.nasti.ar.bits.qos := UInt("b0000")
|
||||
io.nasti.ar.bits.region := UInt("b0000")
|
||||
io.nasti.ar.bits.user := UInt(0)
|
||||
io.nasti.aw.bits := io.nasti.ar.bits
|
||||
io.nasti.w.bits.strb := Mux(data_from_rel, SInt(-1), io.tl.acquire.bits.wmask())
|
||||
io.nasti.w.bits.data := Mux(data_from_rel, io.tl.release.bits.data, io.tl.acquire.bits.data)
|
||||
io.nasti.w.bits.last := tl_wrap_out
|
||||
|
||||
when(!active_out){
|
||||
io.tl.release.ready := io.nasti.w.ready
|
||||
io.tl.acquire.ready := io.nasti.w.ready && !io.tl.release.valid
|
||||
io.nasti.w.valid := (io.tl.release.valid && rel_has_data) ||
|
||||
(io.tl.acquire.valid && acq_has_data)
|
||||
when(io.nasti.w.ready && (io.tl.release.valid || io.tl.acquire.valid)) {
|
||||
active_out := (!is_write && !io.nasti.ar.ready) ||
|
||||
(is_write && !(io.nasti.aw.ready && io.nasti.w.ready)) ||
|
||||
(io.nasti.w.valid && Bool(tlDataBeats > 1))
|
||||
io.nasti.aw.valid := is_write
|
||||
io.nasti.ar.valid := !is_write
|
||||
cmd_sent_out := (!is_write && io.nasti.ar.ready) || (is_write && io.nasti.aw.ready)
|
||||
tl_done_out := tl_wrap_out
|
||||
when(io.tl.release.valid) {
|
||||
data_from_rel := Bool(true)
|
||||
io.nasti.w.bits.data := io.tl.release.bits.data
|
||||
io.nasti.w.bits.strb := SInt(-1)
|
||||
val tag = Cat(io.tl.release.bits.client_id,
|
||||
io.tl.release.bits.client_xact_id,
|
||||
io.tl.release.bits.isVoluntary())
|
||||
val addr = io.tl.release.bits.full_addr()
|
||||
io.nasti.aw.bits.id := tag
|
||||
io.nasti.aw.bits.addr := addr
|
||||
io.nasti.aw.bits.len := UInt(tlDataBeats-1)
|
||||
io.nasti.aw.bits.size := MT_Q
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := rel_has_data
|
||||
} .elsewhen(io.tl.acquire.valid) {
|
||||
data_from_rel := Bool(false)
|
||||
io.nasti.w.bits.data := io.tl.acquire.bits.data
|
||||
io.nasti.w.bits.strb := io.tl.acquire.bits.wmask()
|
||||
val tag = Cat(io.tl.acquire.bits.client_id,
|
||||
io.tl.acquire.bits.client_xact_id,
|
||||
io.tl.acquire.bits.isBuiltInType())
|
||||
val addr = io.tl.acquire.bits.full_addr()
|
||||
when(is_write) {
|
||||
io.nasti.aw.bits.id := tag
|
||||
io.nasti.aw.bits.addr := addr
|
||||
io.nasti.aw.bits.len := Mux(io.tl.acquire.bits.isBuiltInType(Acquire.putBlockType),
|
||||
UInt(tlDataBeats-1), UInt(0))
|
||||
io.nasti.aw.bits.size := bytesToXSize(PopCount(io.tl.acquire.bits.wmask()))
|
||||
} .otherwise {
|
||||
io.nasti.ar.bits.id := tag
|
||||
io.nasti.ar.bits.addr := addr
|
||||
io.nasti.ar.bits.len := Mux(io.tl.acquire.bits.isBuiltInType(Acquire.getBlockType),
|
||||
UInt(tlDataBeats-1), UInt(0))
|
||||
io.nasti.ar.bits.size := io.tl.acquire.bits.op_size()
|
||||
}
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := acq_has_data
|
||||
}
|
||||
}
|
||||
}
|
||||
when(active_out) {
|
||||
io.nasti.ar.valid := !cmd_sent_out && !has_data
|
||||
io.nasti.aw.valid := !cmd_sent_out && has_data
|
||||
cmd_sent_out := cmd_sent_out || io.nasti.ar.fire() || io.nasti.aw.fire()
|
||||
when(has_data && !tl_done_out) {
|
||||
when(data_from_rel) {
|
||||
io.tl.release.ready := io.nasti.w.ready
|
||||
io.nasti.w.valid := io.tl.release.valid
|
||||
} .otherwise {
|
||||
io.tl.acquire.ready := io.nasti.w.ready
|
||||
io.nasti.w.valid := io.tl.acquire.valid
|
||||
}
|
||||
}
|
||||
when(tl_wrap_out) { tl_done_out := Bool(true) }
|
||||
when(cmd_sent_out && (!has_data || tl_done_out)) { active_out := Bool(false) }
|
||||
}
|
||||
|
||||
// Aggregate incoming NASTI responses into TL Grants
|
||||
val (tl_cnt_in, tl_wrap_in) = Counter(io.tl.grant.fire() && io.tl.grant.bits.hasMultibeatData(), tlDataBeats)
|
||||
val gnt_arb = Module(new Arbiter(new GrantToDst, 2))
|
||||
io.tl.grant <> gnt_arb.io.out
|
||||
|
||||
gnt_arb.io.in(0).valid := io.nasti.r.valid
|
||||
io.nasti.r.ready := gnt_arb.io.in(0).ready
|
||||
gnt_arb.io.in(0).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) io.nasti.r.bits.id(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = io.nasti.r.bits.id(0),
|
||||
g_type = Mux(io.nasti.r.bits.id(0), Grant.getDataBlockType, UInt(0)), // TODO: Assumes MI or MEI protocol
|
||||
client_xact_id = io.nasti.r.bits.id >> UInt(1),
|
||||
manager_xact_id = UInt(0),
|
||||
addr_beat = tl_cnt_in,
|
||||
data = io.nasti.r.bits.data)
|
||||
|
||||
gnt_arb.io.in(1).valid := io.nasti.b.valid
|
||||
io.nasti.b.ready := gnt_arb.io.in(1).ready
|
||||
gnt_arb.io.in(1).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) io.nasti.b.bits.id(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = Bool(true),
|
||||
g_type = Mux(io.nasti.b.bits.id(0), Grant.voluntaryAckType, Grant.putAckType),
|
||||
client_xact_id = io.nasti.b.bits.id >> UInt(1),
|
||||
manager_xact_id = UInt(0))
|
||||
}
|
||||
|
||||
class MemPipeIOTileLinkIOConverter(outstanding: Int) extends MIFModule {
|
||||
val io = new Bundle {
|
||||
val tl = new ManagerTileLinkIO
|
||||
val mem = new MemPipeIO
|
||||
}
|
||||
|
||||
val a = Module(new MemIOTileLinkIOConverter(1))
|
||||
val b = Module(new MemPipeIOMemIOConverter(outstanding))
|
||||
a.io.tl <> io.tl
|
||||
b.io.cpu.req_cmd <> Queue(a.io.mem.req_cmd, 2, pipe=true)
|
||||
b.io.cpu.req_data <> Queue(a.io.mem.req_data, mifDataBeats, pipe=true)
|
||||
a.io.mem.resp <> b.io.cpu.resp
|
||||
b.io.mem <> io.mem
|
||||
}
|
||||
|
||||
//Adapter betweewn an UncachedTileLinkIO and a mem controller MemIO
|
||||
class MemIOTileLinkIOConverter(qDepth: Int) extends TLModule with MIFParameters {
|
||||
val io = new Bundle {
|
||||
val tl = new ManagerTileLinkIO
|
||||
val mem = new MemIO
|
||||
}
|
||||
val dataBits = tlDataBits*tlDataBeats
|
||||
val dstIdBits = params(LNHeaderBits)
|
||||
require(tlDataBits*tlDataBeats == mifDataBits*mifDataBeats, "Data sizes between LLC and MC don't agree")
|
||||
require(dstIdBits + tlClientXactIdBits < mifTagBits, "MemIO converter is going truncate tags: " + dstIdBits + " + " + tlClientXactIdBits + " >= " + mifTagBits)
|
||||
|
||||
io.tl.acquire.ready := Bool(false)
|
||||
io.tl.probe.valid := Bool(false)
|
||||
io.tl.release.ready := Bool(false)
|
||||
io.tl.finish.ready := Bool(true)
|
||||
io.mem.resp.ready := Bool(false)
|
||||
|
||||
val gnt_arb = Module(new Arbiter(new GrantToDst, 2))
|
||||
io.tl.grant <> gnt_arb.io.out
|
||||
|
||||
val dst_off = dstIdBits + tlClientXactIdBits
|
||||
val acq_has_data = io.tl.acquire.bits.hasData()
|
||||
val rel_has_data = io.tl.release.bits.hasData()
|
||||
|
||||
// Decompose outgoing TL Acquires into MemIO cmd and data
|
||||
val active_out = Reg(init=Bool(false))
|
||||
val cmd_sent_out = Reg(init=Bool(false))
|
||||
val tag_out = Reg(UInt(width = mifTagBits))
|
||||
val addr_out = Reg(UInt(width = mifAddrBits))
|
||||
val has_data = Reg(init=Bool(false))
|
||||
val data_from_rel = Reg(init=Bool(false))
|
||||
val (tl_cnt_out, tl_wrap_out) =
|
||||
Counter((io.tl.acquire.fire() && acq_has_data) ||
|
||||
(io.tl.release.fire() && rel_has_data), tlDataBeats)
|
||||
val tl_done_out = Reg(init=Bool(false))
|
||||
val make_grant_ack = Reg(init=Bool(false))
|
||||
|
||||
gnt_arb.io.in(1).valid := Bool(false)
|
||||
gnt_arb.io.in(1).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) tag_out(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = Bool(true),
|
||||
g_type = Mux(data_from_rel, Grant.voluntaryAckType, Grant.putAckType),
|
||||
client_xact_id = tag_out >> UInt(1),
|
||||
manager_xact_id = UInt(0))
|
||||
|
||||
if(tlDataBits != mifDataBits || tlDataBeats != mifDataBeats) {
|
||||
val mem_cmd_q = Module(new Queue(new MemReqCmd, qDepth))
|
||||
val mem_data_q = Module(new Queue(new MemData, qDepth))
|
||||
mem_cmd_q.io.enq.valid := Bool(false)
|
||||
mem_data_q.io.enq.valid := Bool(false)
|
||||
val (mif_cnt_out, mif_wrap_out) = Counter(mem_data_q.io.enq.fire(), mifDataBeats)
|
||||
val mif_done_out = Reg(init=Bool(false))
|
||||
val tl_buf_out = Reg(Vec(io.tl.acquire.bits.data, tlDataBeats))
|
||||
val mif_buf_out = Vec.fill(mifDataBeats){ new MemData }
|
||||
mif_buf_out := mif_buf_out.fromBits(tl_buf_out.toBits)
|
||||
val mif_prog_out = (mif_cnt_out+UInt(1, width = log2Up(mifDataBeats+1)))*UInt(mifDataBits)
|
||||
val tl_prog_out = tl_cnt_out*UInt(tlDataBits)
|
||||
|
||||
when(!active_out){
|
||||
io.tl.release.ready := Bool(true)
|
||||
io.tl.acquire.ready := !io.tl.release.valid
|
||||
when(io.tl.release.valid) {
|
||||
active_out := Bool(true)
|
||||
cmd_sent_out := Bool(false)
|
||||
tag_out := Cat(io.tl.release.bits.client_id,
|
||||
io.tl.release.bits.client_xact_id,
|
||||
io.tl.release.bits.isVoluntary())
|
||||
addr_out := io.tl.release.bits.addr_block
|
||||
has_data := rel_has_data
|
||||
data_from_rel := Bool(true)
|
||||
make_grant_ack := io.tl.release.bits.requiresAck()
|
||||
tl_done_out := tl_wrap_out
|
||||
tl_buf_out(tl_cnt_out) := io.tl.release.bits.data
|
||||
} .elsewhen(io.tl.acquire.valid) {
|
||||
active_out := Bool(true)
|
||||
cmd_sent_out := Bool(false)
|
||||
tag_out := Cat(io.tl.release.bits.client_id,
|
||||
io.tl.acquire.bits.client_xact_id,
|
||||
io.tl.acquire.bits.isBuiltInType())
|
||||
addr_out := io.tl.acquire.bits.addr_block
|
||||
has_data := acq_has_data
|
||||
data_from_rel := Bool(false)
|
||||
make_grant_ack := acq_has_data
|
||||
tl_done_out := tl_wrap_out
|
||||
tl_buf_out(tl_cnt_out) := io.tl.acquire.bits.data
|
||||
}
|
||||
}
|
||||
when(active_out) {
|
||||
mem_cmd_q.io.enq.valid := !cmd_sent_out
|
||||
cmd_sent_out := cmd_sent_out || mem_cmd_q.io.enq.fire()
|
||||
when(has_data) {
|
||||
when(!tl_done_out) {
|
||||
io.tl.acquire.ready := Bool(true)
|
||||
when(io.tl.acquire.valid) {
|
||||
tl_buf_out(tl_cnt_out) := Mux(data_from_rel,
|
||||
io.tl.release.bits.data,
|
||||
io.tl.acquire.bits.data)
|
||||
}
|
||||
}
|
||||
when(!mif_done_out) {
|
||||
mem_data_q.io.enq.valid := tl_done_out || mif_prog_out <= tl_prog_out
|
||||
}
|
||||
}
|
||||
when(tl_wrap_out) { tl_done_out := Bool(true) }
|
||||
when(mif_wrap_out) { mif_done_out := Bool(true) }
|
||||
when(tl_done_out && make_grant_ack) {
|
||||
gnt_arb.io.in(1).valid := Bool(true)
|
||||
when(gnt_arb.io.in(1).ready) { make_grant_ack := Bool(false) }
|
||||
}
|
||||
when(cmd_sent_out && (!has_data || mif_done_out) && !make_grant_ack) {
|
||||
active_out := Bool(false)
|
||||
}
|
||||
}
|
||||
|
||||
mem_cmd_q.io.enq.bits.rw := has_data
|
||||
mem_cmd_q.io.enq.bits.tag := tag_out
|
||||
mem_cmd_q.io.enq.bits.addr := addr_out
|
||||
mem_data_q.io.enq.bits.data := mif_buf_out(mif_cnt_out).data
|
||||
io.mem.req_cmd <> mem_cmd_q.io.deq
|
||||
io.mem.req_data <> mem_data_q.io.deq
|
||||
} else { // Don't make the data buffers and try to flow cmd and data
|
||||
io.mem.req_cmd.valid := Bool(false)
|
||||
io.mem.req_data.valid := Bool(false)
|
||||
io.mem.req_cmd.bits.rw := has_data
|
||||
io.mem.req_cmd.bits.tag := tag_out
|
||||
io.mem.req_cmd.bits.addr := addr_out
|
||||
io.mem.req_data.bits.data := Mux(data_from_rel,
|
||||
io.tl.release.bits.data,
|
||||
io.tl.acquire.bits.data)
|
||||
when(!active_out){
|
||||
io.tl.release.ready := io.mem.req_data.ready
|
||||
io.tl.acquire.ready := io.mem.req_data.ready && !io.tl.release.valid
|
||||
io.mem.req_data.valid := (io.tl.release.valid && rel_has_data) ||
|
||||
(io.tl.acquire.valid && acq_has_data)
|
||||
when(io.mem.req_data.ready && (io.tl.release.valid || io.tl.acquire.valid)) {
|
||||
active_out := !io.mem.req_cmd.ready || io.mem.req_data.valid
|
||||
io.mem.req_cmd.valid := Bool(true)
|
||||
cmd_sent_out := io.mem.req_cmd.ready
|
||||
tl_done_out := tl_wrap_out
|
||||
when(io.tl.release.valid) {
|
||||
data_from_rel := Bool(true)
|
||||
make_grant_ack := io.tl.release.bits.requiresAck()
|
||||
io.mem.req_data.bits.data := io.tl.release.bits.data
|
||||
val tag = Cat(io.tl.release.bits.client_id,
|
||||
io.tl.release.bits.client_xact_id,
|
||||
io.tl.release.bits.isVoluntary())
|
||||
val addr = io.tl.release.bits.addr_block
|
||||
io.mem.req_cmd.bits.tag := tag
|
||||
io.mem.req_cmd.bits.addr := addr
|
||||
io.mem.req_cmd.bits.rw := rel_has_data
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := rel_has_data
|
||||
} .elsewhen(io.tl.acquire.valid) {
|
||||
data_from_rel := Bool(false)
|
||||
make_grant_ack := acq_has_data // i.e. is it a Put
|
||||
io.mem.req_data.bits.data := io.tl.acquire.bits.data
|
||||
io.mem.req_cmd.bits.rw := acq_has_data
|
||||
val tag = Cat(io.tl.acquire.bits.client_id,
|
||||
io.tl.acquire.bits.client_xact_id,
|
||||
io.tl.acquire.bits.isBuiltInType())
|
||||
val addr = io.tl.acquire.bits.addr_block
|
||||
io.mem.req_cmd.bits.tag := tag
|
||||
io.mem.req_cmd.bits.addr := addr
|
||||
io.mem.req_cmd.bits.rw := acq_has_data
|
||||
tag_out := tag
|
||||
addr_out := addr
|
||||
has_data := acq_has_data
|
||||
}
|
||||
}
|
||||
}
|
||||
when(active_out) {
|
||||
io.mem.req_cmd.valid := !cmd_sent_out
|
||||
cmd_sent_out := cmd_sent_out || io.mem.req_cmd.fire()
|
||||
when(has_data && !tl_done_out) {
|
||||
when(data_from_rel) {
|
||||
io.tl.release.ready := io.mem.req_data.ready
|
||||
io.mem.req_data.valid := io.tl.release.valid
|
||||
} .otherwise {
|
||||
io.tl.acquire.ready := io.mem.req_data.ready
|
||||
io.mem.req_data.valid := io.tl.acquire.valid
|
||||
}
|
||||
}
|
||||
when(tl_wrap_out) { tl_done_out := Bool(true) }
|
||||
when(tl_done_out && make_grant_ack) {
|
||||
gnt_arb.io.in(1).valid := Bool(true) // TODO: grants for voluntary acks?
|
||||
when(gnt_arb.io.in(1).ready) { make_grant_ack := Bool(false) }
|
||||
}
|
||||
when(cmd_sent_out && (!has_data || tl_done_out) && !make_grant_ack) {
|
||||
active_out := Bool(false)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Aggregate incoming MemIO responses into TL Grants
|
||||
val active_in = Reg(init=Bool(false))
|
||||
val (tl_cnt_in, tl_wrap_in) = Counter(io.tl.grant.fire() && io.tl.grant.bits.hasMultibeatData(), tlDataBeats)
|
||||
val tag_in = Reg(UInt(width = mifTagBits))
|
||||
|
||||
if(tlDataBits != mifDataBits || tlDataBeats != mifDataBeats) {
|
||||
val (mif_cnt_in, mif_wrap_in) = Counter(io.mem.resp.fire(), mifDataBeats) // TODO: Assumes all resps have data
|
||||
val mif_done_in = Reg(init=Bool(false))
|
||||
val mif_buf_in = Reg(Vec(new MemData, mifDataBeats))
|
||||
val tl_buf_in = Vec.fill(tlDataBeats){ io.tl.acquire.bits.data }
|
||||
tl_buf_in := tl_buf_in.fromBits(mif_buf_in.toBits)
|
||||
val tl_prog_in = (tl_cnt_in+UInt(1, width = log2Up(tlDataBeats+1)))*UInt(tlDataBits)
|
||||
val mif_prog_in = mif_cnt_in*UInt(mifDataBits)
|
||||
gnt_arb.io.in(0).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) tag_in(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = tag_in(0),
|
||||
g_type = Mux(tag_in(0), Grant.getDataBlockType, UInt(0)), // TODO: Assumes MI or MEI protocol
|
||||
client_xact_id = tag_in >> UInt(1),
|
||||
manager_xact_id = UInt(0),
|
||||
addr_beat = tl_cnt_in,
|
||||
data = tl_buf_in(tl_cnt_in))
|
||||
|
||||
when(!active_in) {
|
||||
io.mem.resp.ready := Bool(true)
|
||||
when(io.mem.resp.valid) {
|
||||
active_in := Bool(true)
|
||||
mif_done_in := mif_wrap_in
|
||||
tag_in := io.mem.resp.bits.tag
|
||||
mif_buf_in(tl_cnt_in).data := io.mem.resp.bits.data
|
||||
}
|
||||
}
|
||||
when(active_in) {
|
||||
gnt_arb.io.in(0).valid := mif_done_in || tl_prog_in <= mif_prog_in
|
||||
when(!mif_done_in) {
|
||||
io.mem.resp.ready := Bool(true)
|
||||
when(io.mem.resp.valid) {
|
||||
mif_buf_in(mif_cnt_in).data := io.mem.resp.bits.data
|
||||
}
|
||||
}
|
||||
when(mif_wrap_in) { mif_done_in := Bool(true) }
|
||||
when(tl_wrap_in) { active_in := Bool(false) }
|
||||
}
|
||||
} else { // Don't generate all the uneeded data buffers and flow resp
|
||||
gnt_arb.io.in(0).valid := io.mem.resp.valid
|
||||
io.mem.resp.ready := gnt_arb.io.in(0).ready
|
||||
gnt_arb.io.in(0).bits := Grant(
|
||||
dst = (if(dstIdBits > 0) io.mem.resp.bits.tag(dst_off, tlClientXactIdBits + 1) else UInt(0)),
|
||||
is_builtin_type = io.mem.resp.bits.tag(0),
|
||||
g_type = Mux(io.mem.resp.bits.tag(0), Grant.getDataBlockType, UInt(0)), // TODO: Assumes MI or MEI protocol
|
||||
client_xact_id = io.mem.resp.bits.tag >> UInt(1),
|
||||
manager_xact_id = UInt(0),
|
||||
addr_beat = tl_cnt_in,
|
||||
data = io.mem.resp.bits.data)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user