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tilelink: wmask was double the width it should be

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When amo_offset = UInt(0), UIntToOH(amo_offset) = "b01", not b"1".
This meant that the amo wmask was double wide, making wmask() fat.
This commit is contained in:
Wesley W. Terpstra 2016-06-07 14:04:01 -07:00
parent 2d66ac93d3
commit 324cabc494
1 changed files with 6 additions and 5 deletions
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11
uncore/src/main/scala/tilelink.scala
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@ -177,11 +177,12 @@ trait HasAcquireUnion extends HasTileLinkParameters {
def amo_shift_bytes(dummy: Int = 0) = UInt(amoAluOperandBytes)*amo_offset() def amo_shift_bytes(dummy: Int = 0) = UInt(amoAluOperandBytes)*amo_offset()
/** Write mask for [[uncore.Put]], [[uncore.PutBlock]], [[uncore.PutAtomic]] */ /** Write mask for [[uncore.Put]], [[uncore.PutBlock]], [[uncore.PutAtomic]] */
def wmask(dummy: Int = 0): UInt = { def wmask(dummy: Int = 0): UInt = {
Mux(isBuiltInType(Acquire.putAtomicType), val is_amo = isBuiltInType(Acquire.putAtomicType)
FillInterleaved(amoAluOperandBytes, UIntToOH(amo_offset())), val amo_sel = if (tlByteAddrBits > log2Up(amoAluOperandBytes)) UIntToOH(amo_offset()) else UInt(1)
Mux(isBuiltInType(Acquire.putBlockType) || isBuiltInType(Acquire.putType), val amo_mask = FillInterleaved(amoAluOperandBytes, amo_sel)
union(tlWriteMaskBits, 1), val is_put = isBuiltInType(Acquire.putBlockType) || isBuiltInType(Acquire.putType)
UInt(0, width = tlWriteMaskBits))) val put_mask = union(tlWriteMaskBits, 1)
Mux(is_amo, amo_mask, Mux(is_put, put_mask, UInt(0)))
} }
/** Full, beat-sized writemask */ /** Full, beat-sized writemask */
def full_wmask(dummy: Int = 0) = FillInterleaved(8, wmask()) def full_wmask(dummy: Int = 0) = FillInterleaved(8, wmask())