riscv/rocket-chip
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syncrhonizers: Remove unused sync from superclass

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This commit is contained in:
Megan Wachs 2017-08-30 12:33:03 -07:00
parent 9dd6c4c32d
commit 8139014c9e
1 changed files with 8 additions and 9 deletions
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17
src/main/scala/util/SynchronizingReg.scala
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@ -17,8 +17,7 @@ import Chisel._
* *
*/ */
abstract class AbstractSynchronizerReg(w: Int = 1, sync: Int = 3) extends Module { abstract class AbstractSynchronizerReg(w: Int = 1) extends Module {
require(sync > 0, "Sync must be greater than 0.")
val io = new Bundle { val io = new Bundle {
val d = UInt(INPUT, width = w) val d = UInt(INPUT, width = w)
@ -29,7 +28,7 @@ abstract class AbstractSynchronizerReg(w: Int = 1, sync: Int = 3) extends Module
object AbstractSynchronizerReg { object AbstractSynchronizerReg {
def apply [T <: Chisel.Data](gen: => AbstractSynchronizerReg, in: T, sync: Int = 3, name: Option[String] = None): T = { def apply [T <: Chisel.Data](gen: => AbstractSynchronizerReg, in: T, name: Option[String] = None): T = {
val sync_chain = Module(gen) val sync_chain = Module(gen)
name.foreach{ sync_chain.suggestName(_) } name.foreach{ sync_chain.suggestName(_) }
sync_chain.io.d := in.asUInt sync_chain.io.d := in.asUInt
@ -38,7 +37,8 @@ object AbstractSynchronizerReg {
} }
} }
class AsyncResetSynchronizerShiftReg(w: Int = 1, sync: Int = 3) extends AbstractSynchronizerReg(w, sync) { class AsyncResetSynchronizerShiftReg(w: Int = 1, sync: Int = 3) extends AbstractSynchronizerReg(w) {
require(sync > 0, "Sync must be greater than 0.")
override def desiredName = s"AsyncResetSynchronizerShiftReg_w${w}_d${sync}" override def desiredName = s"AsyncResetSynchronizerShiftReg_w${w}_d${sync}"
@ -59,11 +59,11 @@ class AsyncResetSynchronizerShiftReg(w: Int = 1, sync: Int = 3) extends Abstract
object AsyncResetSynchronizerShiftReg { object AsyncResetSynchronizerShiftReg {
def apply [T <: Chisel.Data](in: T, sync: Int = 3, name: Option[String] = None): T = def apply [T <: Chisel.Data](in: T, sync: Int = 3, name: Option[String] = None): T =
AbstractSynchronizerReg(gen = {new AsyncResetSynchronizerShiftReg(in.getWidth, sync)}, AbstractSynchronizerReg(gen = {new AsyncResetSynchronizerShiftReg(in.getWidth, sync)}, in, name)
in, sync, name)
} }
class SynchronizerShiftReg(w: Int = 1, sync: Int = 3) extends AbstractSynchronizerReg(w, sync) { class SynchronizerShiftReg(w: Int = 1, sync: Int = 3) extends AbstractSynchronizerReg(w) {
require(sync > 0, "Sync must be greater than 0.")
override def desiredName = s"SynchronizerShiftReg_w${w}_d${sync}" override def desiredName = s"SynchronizerShiftReg_w${w}_d${sync}"
@ -84,6 +84,5 @@ class SynchronizerShiftReg(w: Int = 1, sync: Int = 3) extends AbstractSynchroniz
object SynchronizerShiftReg { object SynchronizerShiftReg {
def apply [T <: Chisel.Data](in: T, sync: Int = 3, name: Option[String] = None): T = def apply [T <: Chisel.Data](in: T, sync: Int = 3, name: Option[String] = None): T =
AbstractSynchronizerReg(gen = { new SynchronizerShiftReg(in.getWidth, sync)}, AbstractSynchronizerReg(gen = { new SynchronizerShiftReg(in.getWidth, sync)}, in, name)
in, sync, name)
} }