riscv/rocket-chip
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fix replay bug, don't respond when cmd is a NOP

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This commit is contained in:
Yunsup Lee 2013-10-28 22:35:18 -07:00
parent 36b85b8ee2
commit 1583560757
1 changed files with 2 additions and 2 deletions
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4
rocket/src/main/scala/nbdcache.scala
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@ -310,7 +310,7 @@ class MSHR(id: Int)(implicit conf: DCacheConfig, tl: TileLinkConfiguration) exte
when (!io.meta_read.ready) {
rpq.io.deq.ready := Bool(false)
io.replay.bits.cmd := M_FENCE // NOP
io.replay.bits.cmd := M_NOP
}
}
@ -751,7 +751,7 @@ class HellaCache(implicit conf: DCacheConfig, tl: TileLinkConfiguration) extends
val s2_valid = Reg(next=s1_valid_masked, init=Bool(false))
val s2_req = Reg(io.cpu.req.bits.clone)
val s2_replay = Reg(next=s1_replay, init=Bool(false))
val s2_replay = Reg(next=s1_replay, init=Bool(false)) && s2_req.cmd != M_NOP
val s2_recycle = Bool()
val s2_valid_masked = Bool()