riscv/rocket-chip
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Report D$ uncorrectable errors on C channel

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This commit is contained in:
Andrew Waterman 2017-09-20 17:15:00 -07:00
parent 6bc20942b5
commit 88c782cc70
1 changed files with 10 additions and 2 deletions
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12
src/main/scala/rocket/DCache.scala
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@ -528,6 +528,8 @@ class DCacheModule(outer: DCache) extends HellaCacheModule(outer) {
val s1_release_data_valid = Reg(next = dataArb.io.in(2).fire())
val s2_release_data_valid = Reg(next = s1_release_data_valid && !releaseRejected)
val releaseDataBeat = Cat(UInt(0), c_count) + Mux(releaseRejected, UInt(0), s1_release_data_valid + Cat(UInt(0), s2_release_data_valid))
val writeback_data_error = s2_data_decoded.map(_.error).reduce(_||_)
val writeback_data_uncorrectable = s2_data_decoded.map(_.uncorrectable).reduce(_||_)
val nackResponseMessage = edge.ProbeAck(b = probe_bits, reportPermissions = TLPermissions.NtoN)
val cleanReleaseMessage = edge.ProbeAck(b = probe_bits, reportPermissions = s2_report_param)
@ -595,6 +597,12 @@ class DCacheModule(outer: DCache) extends HellaCacheModule(outer) {
}
tl_out_c.bits.address := probe_bits.address
tl_out_c.bits.data := s2_data_corrected
tl_out_c.bits.error := inWriteback && {
val accrued = Reg(Bool())
val next = writeback_data_uncorrectable || (accrued && !c_first)
when (tl_out_c.fire()) { accrued := next }
next
}
dataArb.io.in(2).valid := inWriteback && releaseDataBeat < refillCycles
dataArb.io.in(2).bits.write := false
@ -728,8 +736,8 @@ class DCacheModule(outer: DCache) extends HellaCacheModule(outer) {
{
val (data_error, data_error_uncorrectable, data_error_addr) =
if (usingDataScratchpad) (s2_valid_data_error, s2_data_error_uncorrectable, s2_req.addr) else {
(tl_out_c.valid && edge.hasData(tl_out_c.bits) && s2_data_decoded.map(_.error).reduce(_||_),
s2_data_decoded.map(_.uncorrectable).reduce(_||_),
(tl_out_c.fire() && inWriteback && writeback_data_error,
writeback_data_uncorrectable,
tl_out_c.bits.address)
}
val error_addr =