spinal.lib.bus.amba4.axi.Axi4ErrorSlave.scala Maven / Gradle / Ivy
package spinal.lib.bus.amba4.axi
import spinal.core._
import spinal.lib.slave
/**
* Created by spinalvm on 13.06.17.
*/
case class Axi4WriteOnlyErrorSlave(axiConfig: Axi4Config) extends Component{
val io = new Bundle{
val axi = slave(Axi4WriteOnly(axiConfig))
}
val consumeData = RegInit(False)
val sendRsp = RegInit(False)
val id = if(axiConfig.useId) Reg(UInt(axiConfig.idWidth bits)) else null
io.axi.writeCmd.ready := !(consumeData || sendRsp)
when(io.axi.writeCmd.fire){
consumeData := True
if(id != null) id := io.axi.writeCmd.id
}
io.axi.writeData.ready := consumeData
when(io.axi.writeData.fire && io.axi.writeData.last){
consumeData := False
sendRsp := True
}
io.axi.writeRsp.valid := sendRsp
if(axiConfig.useResp) io.axi.writeRsp.setDECERR
if(axiConfig.useId) io.axi.writeRsp.id := id
when(io.axi.writeRsp.fire){
sendRsp := False
}
}
case class Axi4ReadOnlyErrorSlave(axiConfig: Axi4Config) extends Component{
val io = new Bundle{
val axi = slave(Axi4ReadOnly(axiConfig))
}
val sendRsp = RegInit(False)
val id = if(axiConfig.useId) Reg(UInt(axiConfig.idWidth bits)) else null
val remaining = Reg(UInt(8 bits))
val remainingZero = remaining === 0
io.axi.readCmd.ready := !sendRsp
when(io.axi.readCmd.fire){
sendRsp := True
remaining := (if(axiConfig.useLen) io.axi.readCmd.len else U(0))
if(axiConfig.useId) id := io.axi.readCmd.id
}
io.axi.readRsp.valid := sendRsp
if(axiConfig.useId) io.axi.readRsp.id := id
if(axiConfig.useResp) io.axi.readRsp.setDECERR
if(axiConfig.useLast) io.axi.readRsp.last := remainingZero
when(sendRsp) {
when(io.axi.readRsp.ready) {
remaining := remaining - 1
when(remainingZero) {
sendRsp := False
}
}
}
}
case class Axi4SharedErrorSlave(axiConfig: Axi4Config) extends Component{
val io = new Bundle{
val axi = slave(Axi4Shared(axiConfig))
}
val consumeData = RegInit(False)
val sendReadRsp = RegInit(False)
val sendWriteRsp = RegInit(False)
val id = if(axiConfig.useId) Reg(UInt(axiConfig.idWidth bits)) else null
val remaining = Reg(UInt(8 bits))
val remainingZero = remaining === 0
io.axi.sharedCmd.ready := !(consumeData || sendWriteRsp || sendReadRsp )
when(io.axi.sharedCmd.fire){
consumeData := io.axi.sharedCmd.write
sendReadRsp := !io.axi.sharedCmd.write
remaining := (if(axiConfig.useLen) io.axi.sharedCmd.len else U(0))
if(axiConfig.useId) id := io.axi.sharedCmd.id
}
//Write data
io.axi.writeData.ready := consumeData
when(io.axi.writeData.fire && io.axi.writeData.last){
consumeData := False
sendWriteRsp := True
}
//Write rsp
io.axi.writeRsp.valid := sendWriteRsp
if(axiConfig.useResp) io.axi.writeRsp.setDECERR
if(axiConfig.useId) io.axi.writeRsp.id := id
when(io.axi.writeRsp.fire){
sendWriteRsp := False
}
//Read rsp
io.axi.readRsp.valid := sendReadRsp
if(axiConfig.useId) io.axi.readRsp.id := id
if(axiConfig.useResp) io.axi.readRsp.setDECERR
if(axiConfig.useLast) io.axi.readRsp.last := remainingZero
when(sendReadRsp) {
when(io.axi.readRsp.ready) {
remaining := remaining - 1
when(remainingZero) {
sendReadRsp := False
}
}
}
}