riscv/rocket-chip
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Merge pull request #1174 from freechipsproject/error-device-tracked

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Claim that ErrorDevice is TRACKED
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Henry Cook 2018-01-05 17:17:22 -08:00 committed by GitHub
commit 3525489fff
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3 changed files with 3 additions and 3 deletions
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2
src/main/scala/devices/tilelink/Error.scala
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@ -26,7 +26,7 @@ abstract class DevNullDevice(params: ErrorParams, beatBytes: Int = 4)
Seq(TLManagerParameters(
address = params.address,
resources = device.reg("mem"),
regionType = RegionType.UNCACHED,
regionType = RegionType.UNCACHEABLE,
executable = true,
supportsAcquireT = xfer,
supportsAcquireB = xfer,

2
src/main/scala/rocket/DCache.scala
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@ -722,7 +722,7 @@ class DCacheModule(outer: DCache) extends HellaCacheModule(outer) {
metaArb.io.in(5).bits.data := metaArb.io.in(4).bits.data
// Only flush D$ on FENCE.I if some cached executable regions are untracked.
val supports_flush = !edge.manager.managers.forall(m => !m.supportsAcquireT || !m.executable || m.regionType >= RegionType.TRACKED)
val supports_flush = !edge.manager.managers.forall(m => !m.supportsAcquireT || !m.executable || m.regionType >= RegionType.TRACKED || m.regionType <= RegionType.UNCACHEABLE)
if (supports_flush) {
when (tl_out_a.fire() && !s2_uncached) { flushed := false }
when (flushing) {

2
src/main/scala/tilelink/Parameters.scala
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@ -40,7 +40,7 @@ case class TLManagerParameters(
require (supportsAcquireB.contains(supportsAcquireT), s"AcquireB($supportsAcquireB) < AcquireT($supportsAcquireT)")
// Make sure that the regionType agrees with the capabilities
require (!supportsAcquireB || regionType >= RegionType.UNCACHED) // acquire -> uncached, tracked, cached
require (!supportsAcquireB || regionType >= RegionType.UNCACHEABLE) // acquire -> uncached, tracked, cached
require (regionType <= RegionType.UNCACHED || supportsAcquireB) // tracked, cached -> acquire
require (regionType != RegionType.UNCACHED || supportsGet) // uncached -> supportsGet