riscv/rocket-chip
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only write to a single tohost location

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This commit is contained in:
Howard Mao 2016-05-03 20:20:52 -07:00
parent 6cb0979ac4
commit 1882e694e4
1 changed files with 3 additions and 6 deletions
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9
groundtest/src/main/scala/tile.scala
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@ -10,7 +10,7 @@ import cde.{Parameters, Field}
case object BuildGroundTest extends Field[(Int, Parameters) => GroundTest] case object BuildGroundTest extends Field[(Int, Parameters) => GroundTest]
case object GroundTestMaxXacts extends Field[Int] case object GroundTestMaxXacts extends Field[Int]
case object GroundTestCSRs extends Field[Seq[Int]] case object GroundTestCSRs extends Field[Seq[Int]]
case object TohostAddrs extends Field[Seq[BigInt]] case object TohostAddr extends Field[BigInt]
/** A "cache" that responds to probe requests with a release indicating /** A "cache" that responds to probe requests with a release indicating
* the block is not present */ * the block is not present */
@ -114,17 +114,14 @@ class GroundTestFinisher(implicit p: Parameters) extends TLModule()(p) {
val addrBits = p(PAddrBits) val addrBits = p(PAddrBits)
val offsetBits = tlBeatAddrBits + tlByteAddrBits val offsetBits = tlBeatAddrBits + tlByteAddrBits
val tohostAddrs = Vec(p(TohostAddrs).map(addr => UInt(addr))) val tohostAddr = UInt(p(TohostAddr), addrBits)
val (send_cnt, send_done) = Counter(io.mem.grant.fire(), tohostAddrs.size)
val tohostAddr = tohostAddrs(send_cnt)
val s_idle :: s_write :: s_wait :: s_done :: Nil = Enum(Bits(), 4) val s_idle :: s_write :: s_wait :: s_done :: Nil = Enum(Bits(), 4)
val state = Reg(init = s_idle) val state = Reg(init = s_idle)
when (state === s_idle && io.finished) { state := s_write } when (state === s_idle && io.finished) { state := s_write }
when (io.mem.acquire.fire()) { state := s_wait } when (io.mem.acquire.fire()) { state := s_wait }
when (io.mem.grant.fire()) { state := Mux(send_done, s_done, s_write) } when (io.mem.grant.fire()) { state := s_done }
io.mem.acquire.valid := (state === s_write) io.mem.acquire.valid := (state === s_write)
io.mem.acquire.bits := Put( io.mem.acquire.bits := Put(