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tilelink2: factor out the OH1ToOH function

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This commit is contained in:
Wesley W. Terpstra
2016-10-16 19:57:56 -07:00
parent d09f43c32f
commit 72e5a97d40
2 changed files with 4 additions and 3 deletions
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3
src/main/scala/uncore/tilelink2/package.scala
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@ -8,7 +8,8 @@ package object tilelink2
type TLOutwardNode = OutwardNodeHandle[TLClientPortParameters, TLManagerPortParameters, TLBundle]
type TLAsyncOutwardNode = OutwardNodeHandle[TLAsyncClientPortParameters, TLAsyncManagerPortParameters, TLAsyncBundle]
type IntOutwardNode = OutwardNodeHandle[IntSourcePortParameters, IntSinkPortParameters, Vec[Bool]]
def OH1ToUInt(x: UInt) = OHToUInt((x << 1 | UInt(1)) ^ x)
def OH1ToOH(x: UInt) = (x << 1 | UInt(1)) & ~Cat(UInt(0, width=1), x)
def OH1ToUInt(x: UInt) = OHToUInt(OH1ToOH(x))
def UIntToOH1(x: UInt, width: Int) = ~(SInt(-1, width=width).asUInt << x)(width-1, 0)
def trailingZeros(x: Int) = if (x > 0) Some(log2Ceil(x & -x)) else None
// Fill 1s from low bits to high bits