riscv/rocket-chip
1
0
Fork 0
Code Releases Activity

amo_shift_bits -> amo_shift_bytes

Browse Source
This commit is contained in:
Henry Cook
2015-11-16 19:07:58 -08:00
parent 64aaf71b06
commit 0290635454
2 changed files with 8 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
uncore/src/main/scala/cache.scala
View File

@@ -541,7 +541,7 @@ class L2AcquireTracker(trackerId: Int)(implicit p: Parameters) extends L2XactTra
val xact_old_meta = Reg{ new L2Metadata }
val pending_coh = Reg{ xact_old_meta.coh }
val xact_allocate = Reg{ Bool() }
val xact_amo_shift_bits = Reg{ UInt() }
val xact_amo_shift_bytes = Reg{ UInt() }
val xact_op_code = Reg{ UInt() }
val xact_addr_byte = Reg{ UInt() }
val xact_op_size = Reg{ UInt() }
@@ -629,12 +629,12 @@ class L2AcquireTracker(trackerId: Int)(implicit p: Parameters) extends L2XactTra
def mergeData(dataBits: Int)(beat: UInt, incoming: UInt) {
val old_data = incoming // Refilled, written back, or de-cached data
val new_data = data_buffer(beat) // Newly Put data is already in the buffer
amoalu.io.lhs := old_data >> xact_amo_shift_bits
amoalu.io.rhs := new_data >> xact_amo_shift_bits
amoalu.io.lhs := old_data >> (xact_amo_shift_bytes << 3)
amoalu.io.rhs := new_data >> (xact_amo_shift_bytes << 3)
val wmask = FillInterleaved(8, wmask_buffer(beat))
data_buffer(beat) := ~wmask & old_data |
wmask & Mux(xact.isBuiltInType(Acquire.putAtomicType),
amoalu.io.out << xact_amo_shift_bits,
amoalu.io.out << (xact_amo_shift_bytes << 3),
new_data)
wmask_buffer(beat) := ~UInt(0, wmask_buffer.head.getWidth)
when(xact.is(Acquire.putAtomicType) && xact.addr_beat === beat) { amo_result := old_data }
@@ -853,7 +853,7 @@ class L2AcquireTracker(trackerId: Int)(implicit p: Parameters) extends L2XactTra
when(state === s_idle && io.inner.acquire.valid) {
xact_addr_block := io.iacq().addr_block
xact_allocate := io.iacq().allocate()
xact_amo_shift_bits := io.iacq().amo_shift_bits()
xact_amo_shift_bytes := io.iacq().amo_shift_bytes()
xact_op_code := io.iacq().op_code()
xact_addr_byte := io.iacq().addr_byte()
xact_op_size := io.iacq().op_size()

5
uncore/src/main/scala/tilelink.scala
View File

@@ -79,6 +79,7 @@ trait HasTileLinkParameters {
val tlNetworkPreservesPointToPointOrdering = false
val tlNetworkDoesNotInterleaveBeats = true
val amoAluOperandBits = p(AmoAluOperandBits)
val amoAluOperandBytes = amoAluOperandBits/8
}
abstract class TLModule(implicit val p: Parameters) extends Module
@@ -162,9 +163,9 @@ trait HasAcquireUnion extends HasTileLinkParameters {
def op_size(dummy: Int = 0) = union(addrByteOff-1, opSizeOff)
/** Byte address for [[uncore.PutAtomic]] operand */
def addr_byte(dummy: Int = 0) = union(addrByteMSB-1, addrByteOff)
def amo_offset(dummy: Int = 0) = addr_byte()(tlByteAddrBits-1, log2Up(amoAluOperandBits/8))
def amo_offset(dummy: Int = 0) = addr_byte()(tlByteAddrBits-1, log2Up(amoAluOperandBytes))
/** Bit offset of [[uncore.PutAtomic]] operand */
def amo_shift_bits(dummy: Int = 0) = UInt(amoAluOperandBits)*amo_offset()
def amo_shift_bytes(dummy: Int = 0) = UInt(amoAluOperandBytes)*amo_offset()
/** Write mask for [[uncore.Put]], [[uncore.PutBlock]], [[uncore.PutAtomic]] */
def wmask(dummy: Int = 0): UInt = {
Mux(isBuiltInType(Acquire.putAtomicType),