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Small renaming/cleanup | Use LinkedHashMaps

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This commit is contained in:
abejgonzalez
2021-03-15 16:54:42 -07:00
parent 30c9b63e7b
commit 6476c7e7f0
9 changed files with 43 additions and 56 deletions
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44
generators/firechip/src/main/scala/FireSim.scala
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@@ -2,7 +2,7 @@
package firesim.firesim
import scala.collection.mutable.{HashMap}
import scala.collection.mutable.{LinkedHashMap}
import chisel3._
import chisel3.experimental.{IO}
@@ -44,12 +44,12 @@ object NodeIdx {
* memoize its instantiation such that it can be referenced from within a ClockScheme function.
*/
class ClockBridgeInstantiator {
private var _harnessClockMap: HashMap[String, (Double, Clock)] = HashMap.empty
private val _harnessClockMap: LinkedHashMap[String, (Double, Clock)] = LinkedHashMap.empty
// Assumes that the supernode implementation results in duplicated clocks
// (i.e. only 1 set of clocks is generated for all BuildTop designs)
private var _ratClockMap: HashMap[String, (RationalClock, Clock)] = HashMap.empty
private var _ratRefTuple: Option[(String, Double)] = None
private val _buildtopClockMap: LinkedHashMap[String, (RationalClock, Clock)] = LinkedHashMap.empty
private var _buildtopRefTuple: Option[(String, Double)] = None
/**
* Request a clock at a particular frequency
@@ -58,7 +58,7 @@ class ClockBridgeInstantiator {
*
* @param freqRequested Freq. for the domain in Hz
*/
def getClock(name: String, freqRequested: Double): Clock = {
def requestClock(name: String, freqRequested: Double): Clock = {
val clkWire = Wire(new Clock)
_harnessClockMap(name) = (freqRequested, clkWire)
clkWire
@@ -73,15 +73,15 @@ class ClockBridgeInstantiator {
*
* @param baseFreqRequested Freq. for the reference domain in Hz
*/
def getClockRecordMap(allClocks: Seq[RationalClock], baseClockName: String, baseFreqRequested: Double): RecordMap[Clock] = {
require(!_ratRefTuple.isDefined, "Can only request one RecordMap of Clocks")
def requestClockRecordMap(allClocks: Seq[RationalClock], baseClockName: String, baseFreqRequested: Double): RecordMap[Clock] = {
require(!_buildtopRefTuple.isDefined, "Can only request one RecordMap of Clocks")
val ratClockRecordMapWire = Wire(RecordMap(allClocks.map { c => (c.name, Clock()) }:_*))
_ratRefTuple = Some((baseClockName, baseFreqRequested))
_buildtopRefTuple = Some((baseClockName, baseFreqRequested))
for (clock <- allClocks) {
val clkWire = Wire(new Clock)
_ratClockMap(clock.name) = (clock, clkWire)
_buildtopClockMap(clock.name) = (clock, clkWire)
ratClockRecordMapWire(clock.name).get := clkWire
}
@@ -92,14 +92,14 @@ class ClockBridgeInstantiator {
* Connect all clocks requested to ClockBridge
*/
def instantiateFireSimClockBridge: Unit = {
require(_ratRefTuple.isDefined, "Must have rational clocks to assign to")
require(_ratClockMap.exists(_._1 == _ratRefTuple.get._1),
s"Provided base-clock name for rational clocks, ${_ratRefTuple.get._1}, doesn't match a name within specified rational clocks." +
"Available clocks:\n " + _ratClockMap.map(_._1).mkString("\n "))
require(_buildtopRefTuple.isDefined, "Must have rational clocks to assign to")
require(_buildtopClockMap.exists(_._1 == _buildtopRefTuple.get._1),
s"Provided base-clock name for rational clocks, ${_buildtopRefTuple.get._1}, doesn't match a name within specified rational clocks." +
"Available clocks:\n " + _buildtopClockMap.map(_._1).mkString("\n "))
// Simplify the RationalClocks ratio's
val refRatClock = _ratClockMap.find(_._1 == _ratRefTuple.get._1).get._2._1
val simpleRatClocks = _ratClockMap.map { t =>
val refRatClock = _buildtopClockMap.find(_._1 == _buildtopRefTuple.get._1).get._2._1
val simpleRatClocks = _buildtopClockMap.map { t =>
val ratClock = t._2._1
ratClock.copy(
multiplier = ratClock.multiplier * refRatClock.divisor,
@@ -108,8 +108,8 @@ class ClockBridgeInstantiator {
// Determine all the clock dividers (harness + rational clocks)
// Note: Requires that the BuildTop reference frequency is requested with proper freq.
val refRatClockFreq = _ratRefTuple.get._2
val refRatSinkParams = ClockSinkParameters(take=Some(ClockParameters(freqMHz=refRatClockFreq / (1000 * 1000))),name=Some(_ratRefTuple.get._1))
val refRatClockFreq = _buildtopRefTuple.get._2
val refRatSinkParams = ClockSinkParameters(take=Some(ClockParameters(freqMHz=refRatClockFreq / (1000 * 1000))),name=Some(_buildtopRefTuple.get._1))
val harSinkParams = _harnessClockMap.map { case (name, (freq, bundle)) =>
ClockSinkParameters(take=Some(ClockParameters(freqMHz=freq / (1000 * 1000))),name=Some(name))
}.toSeq
@@ -144,7 +144,7 @@ class ClockBridgeInstantiator {
// Connect all clocks (harness + BuildTop clocks)
for (clock <- allAdjRatClks) {
val (_, cbClockField) = cbVecTuples.find(_._1.equalFrequency(clock)).get
_ratClockMap.get(clock.name).map { case (_, clk) => clk := cbClockField }
_buildtopClockMap.get(clock.name).map { case (_, clk) => clk := cbClockField }
_harnessClockMap.get(clock.name).map { case (_, clk) => clk := cbClockField }
}
}
@@ -200,7 +200,7 @@ class WithFireSimSimpleClocks extends Config((site, here, up) => {
chiptop.harnessFunctions += ((th: HasHarnessSignalReferences) => {
reset := th.harnessReset
input_clocks := p(ClockBridgeInstantiatorKey)
.getClockRecordMap(rationalClockSpecs.toSeq, p(FireSimBaseClockNameKey), pllConfig.referenceFreqMHz * (1000 * 1000))
.requestClockRecordMap(rationalClockSpecs.toSeq, p(FireSimBaseClockNameKey), pllConfig.referenceFreqMHz * (1000 * 1000))
Nil })
}
}
@@ -227,9 +227,7 @@ class FireSim(implicit val p: Parameters) extends RawModule with HasHarnessSigna
val lazyModule = LazyModule(p(BuildTop)(p.alterPartial({
case AsyncClockGroupsKey => p(AsyncClockGroupsKey).copy
})))
withClockAndReset(harnessClock, harnessReset) {
val module = Module(lazyModule.module)
}
val module = Module(lazyModule.module)
btFreqMHz = Some(lazyModule match {
case d: HasReferenceClockFreq => d.refClockFreqMHz.getOrElse(p(DefaultClockFrequencyKey))
@@ -246,7 +244,7 @@ class FireSim(implicit val p: Parameters) extends RawModule with HasHarnessSigna
NodeIdx.increment()
}
harnessClock := p(ClockBridgeInstantiatorKey).getClock("buildtop_reference_clock", btFreqMHz.get * (1000 * 1000))
harnessClock := p(ClockBridgeInstantiatorKey).requestClock("buildtop_reference_clock", btFreqMHz.get * (1000 * 1000))
p(ClockBridgeInstantiatorKey).instantiateFireSimClockBridge
}