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spinal.lib.Mem.scala Maven / Gradle / Ivy
package spinal.lib
import spinal.core._
case class ReadRetLinked[T <: Data, T2 <: Data](readType: HardType[T], linkedType: HardType[T2]) extends Bundle {
val value = readType()
val linked = linkedType()
}
class MemPimped[T <: Data](mem: Mem[T]) {
def formalCount(word : T): UInt ={
CountOne((0 until mem.wordCount).map(mem(_) === word))
}
def formalCount(cond : T => Bool) : UInt ={
CountOne((0 until mem.wordCount).map(i => cond(mem(i))))
}
//def streamReadSync[T2 <: Data](event : Event,address: UInt, linkedData: T2) : (Event,T,T2) = {
def streamReadSync[T2 <: Data](cmd: Stream[UInt], linkedData: T2, crossClock:Boolean = false) : Stream[ReadRetLinked[T,T2]] = {
val ret = Stream(new ReadRetLinked(mem.wordType, linkedData))
val retValid = RegInit(False)
val retData = mem.readSync(cmd.payload, cmd.ready, clockCrossing = crossClock)
val retLinked = RegNextWhen(linkedData, cmd.ready)
when(ret.ready) {
retValid := Bool(false)
}
when(cmd.ready) {
retValid := cmd.valid
}
cmd.ready := ret.isFree
ret.valid := retValid
ret.value := retData
ret.linked := retLinked
ret
}
def streamReadSync(cmd: Stream[UInt]): Stream[T] = {
val ret = Stream(mem.wordType)
val retValid = RegInit(False)
val retData = mem.readSync(cmd.payload, cmd.ready)
when(ret.ready) {
retValid := Bool(false)
}
when(cmd.ready) {
retValid := cmd.valid
}
cmd.ready := ret.isFree
ret.valid := retValid
ret.payload := retData
ret
}
def streamReadSyncMultiPort(cmd: Seq[Stream[UInt]], crossClock:Boolean = false) : Vec[Stream[T]] = {
val ret = Vec(Stream(mem.wordType), cmd.length)
val selectOh = OHMasking.first(cmd.map(_.valid))
val selectCmd = Stream(mem.addressType)
selectCmd.valid := cmd.map(_.valid).orR
selectCmd.payload := MuxOH(selectOh.asBits, cmd.map(_.payload))
val retOh = RegNextWhen(selectOh, selectCmd.ready)
val retRsp = mem.streamReadSync(selectCmd)
retRsp.ready := (ret, retOh).zipped.map(_.ready && _).orR
for(i <- 0 until cmd.length){
cmd(i).ready := selectCmd.ready && selectOh(i)
ret(i).valid := retRsp.valid && retOh(i)
ret(i).payload := retRsp.payload
}
ret
}
def flowReadSync(cmd : Flow[UInt]) : Flow[T] = {
val ret = Flow(mem.wordType)
ret.valid := RegNext(cmd.valid)
ret.payload := mem.readSync(cmd.payload)
ret
}
def flowReadSync[T2 <: Data](cmd: Flow[UInt], linkedData: T2) : Flow[ReadRetLinked[T,T2]] = {
val ret = Flow(ReadRetLinked(mem.wordType, linkedData))
ret.valid := RegNext(cmd.valid)
ret.linked := RegNext(linkedData)
ret.value := mem.readSync(cmd.payload)
ret
}
/**
* Create a write port of memory.
*/
def writePort() : Flow[MemWriteCmd[T]] = {
val ret = Flow(MemWriteCmd(mem))
when(ret.valid){
mem.write(ret.address,ret.data)
}
ret
}
/**
* Create a write port of memory with masking.
*/
def writePortWithMask(maskWidth : Int) : Flow[MemWriteCmdWithMask[T]] = {
val ret = Flow(MemWriteCmdWithMask(mem, maskWidth))
mem.write(ret.address,ret.data, ret.valid, ret.mask)
ret
}
def readSyncPort : MemReadPort[T] = readSyncPort()
def readSyncPort(readUnderWrite: ReadUnderWritePolicy = dontCare, clockCrossing: Boolean = false) : MemReadPort[T] = {
val ret : MemReadPort[T] = MemReadPort(mem.wordType(),mem.addressWidth)
ret.rsp := mem.readSync(ret.cmd.payload,ret.cmd.valid, readUnderWrite, clockCrossing)
ret
}
def readAsyncPort() : MemReadPortAsync[T] = {
val ret : MemReadPortAsync[T] = MemReadPortAsync(mem.wordType(),mem.addressWidth)
ret.data := mem.readAsync(ret.address)
ret
}
def readAsyncPortBySyncReadRevertedClk : MemReadPortAsync[T] = {
val ret : MemReadPortAsync[T] = MemReadPortAsync(mem.wordType(),mem.addressWidth)
ret.data := ClockDomain.current.withRevertedClockEdge()(mem.readSync(ret.address))
ret
}
def readWriteSyncPort(
maskWidth : Int = -1,
readUnderWrite: ReadUnderWritePolicy = dontCare,
clockCrossing : Boolean = false,
duringWrite : DuringWritePolicy = dontCare) : MemReadWritePort[T] = {
val ret : MemReadWritePort[T] = MemReadWritePort(
mem.wordType(),
mem.addressWidth,
maskWidth = maskWidth
)
ret.rdata := mem.readWriteSync(
ret.address,
ret.wdata,
ret.enable,
ret.write,
ret.mask,
readUnderWrite= readUnderWrite,
clockCrossing = clockCrossing ,
duringWrite = duringWrite
)
ret
}
}
case class MemWriteCmd[T <: Data](mem : Mem[T], maskWidth : Int = -1) extends Bundle{
def useMask = maskWidth >= 0
val address = mem.addressType()
val data = mem.wordType()
val mask = ifGen(useMask)(Bits(maskWidth bits))
}
case class MemWriteCmdWithMask[T <: Data](mem : Mem[T], maskWidth : Int) extends Bundle {
val address = mem.addressType()
val data = mem.wordType()
val mask = Bits(maskWidth bits)
}
case class MemReadPort[T <: Data](dataType : T,addressWidth : Int) extends Bundle with IMasterSlave{
val cmd = Flow(UInt(addressWidth bit))
val rsp = cloneOf(dataType)
override def asMaster(): Unit = {
master(cmd)
in(rsp)
}
def bypass(writeLast : Flow[MemWriteCmd[T]]): Unit = new Composite(this, "bypass", true){
val cmdLast = RegNext(cmd.payload)
val hit = cmdLast === writeLast.address && writeLast.valid
when(hit){
rsp := writeLast.data
}
}
}
case class MemReadPortAsync[T <: Data](dataType : T,addressWidth : Int) extends Bundle with IMasterSlave{
val address = UInt(addressWidth bit)
val data = cloneOf(dataType)
override def asMaster(): Unit = {
out(address)
in(data)
}
}
case class MemReadWritePort[T <: Data](
dataType : T,
addressWidth : Int,
maskWidth : Int = -1) extends Bundle with IMasterSlave{
def useMask = maskWidth >= 0
val address = UInt(addressWidth bit)
val rdata = cloneOf(dataType)
val wdata = cloneOf(dataType)
val enable = Bool()
val write = Bool()
val mask = ifGen(useMask)(Bits(maskWidth bits))
override def asMaster(): Unit = {
out(address,wdata,enable,write)
if(useMask) out(mask)
in(rdata)
}
}
