class SdramTester(Infrastructure):
def __init__(self,name,parent,cmd,rsp,clk,reset):
Infrastructure.__init__(self, name, parent)
StreamDriverMaster(cmd, self.genCmd, clk, reset)
self.nonZeroRspCounter = 0
self.cmdRandomizer = BoolRandomizer()
self.writeRandomizer = BoolRandomizer()
self.burstRandomizer = BoolRandomizer()
self.lastAddr = 0
self.closeIt = False
self.ram = bytearray(b'\x00' * (1 << (9+2+2+1)))
self.scorboard = ScorboardInOrder("scoreboard", self)
StreamDriverSlave(rsp, clk, reset)
# rsp.ready <= 1
StreamMonitor(rsp, self.scorboard.uutPush, clk, reset)
def canPhaseProgress(self, phase):
return self.nonZeroRspCounter > 4000
def startPhase(self, phase):
Infrastructure.startPhase(self, phase)
if phase == PHASE_WAIT_TASKS_END:
self.closeIt = True
def genCmd(self):
if self.closeIt or not self.cmdRandomizer.get():
return None
trans = Transaction()
if not self.burstRandomizer.get():
trans.address = randBits(9+2+2)
else:
trans.address = self.lastAddr + 1
trans.address = trans.address & ((1 << 13)-1)
trans.write = self.writeRandomizer.get() and self.writeRandomizer.get()
trans.mask = randBits(2)
trans.data = randBits(16)
trans.context = randBits(8)
self.lastAddr = trans.address
if trans.write == 0:
rsp = Transaction()
rsp.data = self.ram[trans.address*2] + (self.ram[trans.address*2+1] << 8)
rsp.context = trans.context
self.scorboard.refPush(rsp)
if rsp.data != 0:
self.nonZeroRspCounter += 1
if self.nonZeroRspCounter % 50 == 0:
print("self.nonZeroRspCounter=" + str(self.nonZeroRspCounter))
else:
for i in xrange(2):
if (trans.mask >> i) & 1 == 1:
self.ram[trans.address * 2 + i] = (trans.data >> (i*8)) & 0xFF
return trans
def __init__(self, name, parent, idBase, axi, dut):
Infrastructure.__init__(self, name, parent)
self.dut = dut
self.axi = axi
self.idBase = idBase
self.writeCmdQueue = Queue()
self.writeDataQueue = Queue()
self.writeCmdIdleRand = BoolRandomizer()
self.writeDataIdleRand = BoolRandomizer()
self.closeIt = False
def cmd(dut,queue):
validRandomizer = BoolRandomizer()
dut.io_slave0_valid <= 0
while True:
yield RisingEdge(dut.io_clkA)
if int(dut.io_slave0_valid) == 1 and int(dut.io_slave0_ready) == 1:
queue.put(Packet(int(dut.io_slave0_payload_a),int(dut.io_slave0_payload_b)))
dut.io_slave0_valid <= validRandomizer.get()
randSignal(dut.io_slave0_payload_a)
randSignal(dut.io_slave0_payload_b)
def __init__(self,name,parent,idBase,axi,dut):
Infrastructure.__init__(self,name,parent)
self.dut = dut
self.axi = axi
self.idBase = idBase
self.writeCmdQueue = Queue()
self.writeDataQueue = Queue()
self.writeCmdIdleRand = BoolRandomizer()
self.writeDataIdleRand = BoolRandomizer()
self.closeIt = False
def cmd(dut,queue):
validRandomizer = BoolRandomizer()
dut.io_slave0_valid <= 0
while True:
yield RisingEdge(dut.io_clkA)
if int(dut.io_slave0_valid) == 1 and int(dut.io_slave0_ready) == 1:
queue.put(Packet(int(dut.io_slave0_payload_a),int(dut.io_slave0_payload_b)))
dut.io_slave0_valid <= validRandomizer.get()
randSignal(dut.io_slave0_payload_a)
randSignal(dut.io_slave0_payload_b)
def __init__(self, axi, base, size, dut):
self.axi = axi
self.size = size
self.base = base
self.dut = dut
self.writeRspRand = BoolRandomizer()
self.writeCmds = []
self.writeDatas = []
self.writeRspQueues = [Queue() for i in range(256)]
self.nonEmptyWriteRspQueues = []
axi.b.payload.hid <= 0
def rsp(dut,queue):
readyRandomizer = BoolRandomizer()
dut.io_master0_ready <= 0
for i in range(0,1000):
while True:
yield RisingEdge(dut.io_clkB)
dut.io_master0_ready <= readyRandomizer.get()
if int(dut.io_master0_valid) == 1 and int(dut.io_master0_ready) == 1:
break
pop = queue.get()
assertEquals(pop.a, dut.io_master0_payload_a,"io_master0_payload_a")
assertEquals(pop.b, dut.io_master0_payload_b, "io_master0_payload_b")
def rsp(dut,queue):
readyRandomizer = BoolRandomizer()
dut.io_master0_ready <= 0
for i in range(0,1000):
while True:
yield RisingEdge(dut.io_clkB)
dut.io_master0_ready <= readyRandomizer.get()
if int(dut.io_master0_valid) == 1 and int(dut.io_master0_ready) == 1:
break
pop = queue.get()
assertEquals(pop.a, dut.io_master0_payload_a,"io_master0_payload_a")
assertEquals(pop.b, dut.io_master0_payload_b, "io_master0_payload_b")
def __init__(self,name,parent,pushStream,popStream,transactionGenerator,dutCounterTarget,clk,reset):
Infrastructure.__init__(self,name,parent)
self.pushStream = pushStream
self.popStream = popStream
self.clk = clk
self.reset = reset
self.dutCounter = 0
self.closeIt = False
self.transactionGenerator = transactionGenerator
self.dutCounterTarget = dutCounterTarget
self.pushRandomizer = BoolRandomizer()
self.scoreboard = ScorboardInOrder("scoreboard", self)
def push(self):
dut = self.dut
queue = self.queue
validRandomizer = BoolRandomizer()
dut.io_slave0_valid <= 0
while True:
yield RisingEdge(dut.clk)
if int(dut.io_slave0_valid) == 1 and int(dut.io_slave0_ready) == 1:
queue.put(FifoPacket(int(dut.io_slave0_payload_a), int(dut.io_slave0_payload_b)))
dut.io_slave0_valid <= validRandomizer.get()
randSignal(dut.io_slave0_payload_a)
randSignal(dut.io_slave0_payload_b)
def push(self):
dut = self.dut
queue = self.queue
validRandomizer = BoolRandomizer()
dut.io_slave0_valid <= 0
while True:
yield RisingEdge(dut.clk)
if int(dut.io_slave0_valid) == 1 and int(dut.io_slave0_ready) == 1:
queue.put(FifoPacket(int(dut.io_slave0_payload_a), int(dut.io_slave0_payload_b)))
dut.io_slave0_valid <= validRandomizer.get()
randSignal(dut.io_slave0_payload_a)
randSignal(dut.io_slave0_payload_b)
def pop(self):
dut = self.dut
queue = self.queue
readyRandomizer = BoolRandomizer()
dut.io_master0_ready <= 0
for i in range(0,1000):
while True:
yield RisingEdge(dut.clk)
dut.io_master0_ready <= readyRandomizer.get()
if int(dut.io_master0_valid) == 1 and int(dut.io_master0_ready) == 1:
break
pop = queue.get()
assertEquals(pop.a, dut.io_master0_payload_a,"io_master0_payload_a")
assertEquals(pop.b, dut.io_master0_payload_b, "io_master0_payload_b")
def __init__(self,name,parent,cmd,rsp,clk,reset):
Infrastructure.__init__(self, name, parent)
StreamDriverMaster(cmd, self.genCmd, clk, reset)
self.nonZeroRspCounter = 0
self.cmdRandomizer = BoolRandomizer()
self.writeRandomizer = BoolRandomizer()
self.burstRandomizer = BoolRandomizer()
self.lastAddr = 0
self.closeIt = False
self.ram = bytearray(b'\x00' * (1 << (9+2+2+1)))
self.scorboard = ScorboardInOrder("scoreboard", self)
StreamDriverSlave(rsp, clk, reset)
# rsp.ready <= 1
StreamMonitor(rsp, self.scorboard.uutPush, clk, reset)
def pop(self):
dut = self.dut
queue = self.queue
readyRandomizer = BoolRandomizer()
dut.io_master0_ready <= 0
for i in range(0,1000):
while True:
yield RisingEdge(dut.clk)
dut.io_master0_ready <= readyRandomizer.get()
if int(dut.io_master0_valid) == 1 and int(dut.io_master0_ready) == 1:
break
pop = queue.get()
assertEquals(pop.a, dut.io_master0_payload_a,"io_master0_payload_a")
assertEquals(pop.b, dut.io_master0_payload_b, "io_master0_payload_b")
class SharedMasterDriver(WriteOnlyMasterDriver, ReadOnlyMasterDriver):
def __init__(self,name,parent,idBase,axi,dut):
WriteOnlyMasterDriver.__init__(self,name,parent, idBase, axi, dut)
ReadOnlyMasterDriver.__init__(self,name,parent, idBase, axi, dut)
self.readOrWriteRand = BoolRandomizer()
def createInfrastructure(self):
StreamDriverMaster(self.axi.arw, self.genSharedCmd, self.dut.clk, self.dut.reset)
StreamDriverMaster(self.axi.w, self.genWriteData, self.dut.clk, self.dut.reset)
StreamDriverSlave(self.axi.b, self.dut.clk, self.dut.reset)
StreamDriverSlave(self.axi.r, self.dut.clk, self.dut.reset)
return self
def genSharedCmd(self):
if self.readOrWriteRand.get():
trans = self.genWriteCmd()
if trans:
trans.write = 1
else:
trans = self.genReadCmd()
if trans:
trans.write = 0
return trans
def updateDoFinish(self):
if self.readCounter > 100 and self.writeCounter > 100:
self.closeIt = False
def isCompleted(self):
return WriteOnlyMasterDriver.isCompleted(self) and ReadOnlyMasterDriver.isCompleted(self)
class SharedMasterDriver(WriteOnlyMasterDriver, ReadOnlyMasterDriver):
def __init__(self, name, parent, idBase, axi, dut):
WriteOnlyMasterDriver.__init__(self, name, parent, idBase, axi, dut)
ReadOnlyMasterDriver.__init__(self, name, parent, idBase, axi, dut)
self.readOrWriteRand = BoolRandomizer()
def createInfrastructure(self):
StreamDriverMaster(self.axi.arw, self.genSharedCmd, self.dut.clk,
self.dut.reset)
StreamDriverMaster(self.axi.w, self.genWriteData, self.dut.clk,
self.dut.reset)
StreamDriverSlave(self.axi.b, self.dut.clk, self.dut.reset)
StreamDriverSlave(self.axi.r, self.dut.clk, self.dut.reset)
return self
def genSharedCmd(self):
if self.readOrWriteRand.get():
trans = self.genWriteCmd()
if trans:
trans.write = 1
else:
trans = self.genReadCmd()
if trans:
trans.write = 0
return trans
def updateDoFinish(self):
if self.readCounter > 100 and self.writeCounter > 100:
self.closeIt = False
def isCompleted(self):
return WriteOnlyMasterDriver.isCompleted(
self) and ReadOnlyMasterDriver.isCompleted(self)
def __init__(self,name,parent,idBase,axi,dut):
Infrastructure.__init__(self,name,parent)
self.idBase = idBase
self.axi = axi
self.dut = dut
self.closeIt = False
self.readCmdIdleRand = BoolRandomizer()
def stimReady(self):
randomizer = BoolRandomizer()
self.ahb.HREADYOUT <= 1
busy = False
while True:
yield RisingEdge(self.clk)
if int(self.ahb.HREADY) == 1:
busyNew = int(self.ahb.HTRANS) >= 2
else:
busyNew = busy
if (busy or busyNew) and int(self.ahb.HREADYOUT) == 0 and int(
self.ahb.HREADY) == 1:
raise TestFailure("HREADYOUT == 0 but HREADY == 1 ??? " +
self.ahb.HREADY._name)
busy = busyNew
self.ahb.HREADYOUT <= randomizer.get()
def __init__(self,axi,base,size,dut):
self.axi = axi
self.size = size
self.base = base
self.dut = dut
self.readRspRand = BoolRandomizer()
self.readRspQueues = [Queue() for i in xrange(256)]
self.nonEmptyReadRspQueues = []
axi.r.payload.hid <= 0
def clockProcess(dut):
randomizer = BoolRandomizer()
dut.io_clkA <= 0
dut.io_clkB <= 0
dut.io_resetB <= 1
dut.io_resetA <= 1
yield Timer(1000)
dut.io_resetA <= 0
dut.io_resetB <= 0
while True:
dut.io_clkA <= 0
dut.io_clkB <= 0
yield Timer(500)
if randomizer.get():
dut.io_clkA <= 1
else:
dut.io_clkB <= 1
yield Timer(500)
def clockProcess(dut):
randomizer = BoolRandomizer()
dut.io_clkA <= 0
dut.io_clkB <= 0
dut.io_resetB <= 1
dut.io_resetA <= 1
yield Timer(1000)
dut.io_resetA <= 0
dut.io_resetB <= 0
while True:
dut.io_clkA <= 0
dut.io_clkB <= 0
yield Timer(500)
if randomizer.get():
dut.io_clkA <= 1
else:
dut.io_clkB <= 1
yield Timer(500)
def __init__(self,axi,base,size,dut):
self.axi = axi
self.size = size
self.base = base
self.dut = dut
self.writeRspRand = BoolRandomizer()
self.writeCmds = []
self.writeDatas = []
self.writeRspQueues = [Queue() for i in xrange(256)]
self.nonEmptyWriteRspQueues = []
axi.b.payload.hid <= 0
def __init__(self, name, parent, axi, addressWidth, clk, reset):
Infrastructure.__init__(self, name, parent)
self.axi = axi
if hasattr(axi.arw.payload, "hid"):
self.idWidth = len(axi.arw.payload.hid)
self.addressWidth = addressWidth
self.dataWidth = len(axi.w.payload.data)
self.maxDataBytes = int(log2Up(self.dataWidth) / 8)
self.ram = bytearray(b'\x00' *
((1 << addressWidth) * self.maxDataBytes))
self.doReadWriteCmdRand = BoolRandomizer()
self.readWriteRand = BoolRandomizer()
self.writeDataRand = BoolRandomizer()
self.writeRspScoreboard = ScorboardOutOfOrder("writeRspScoreboard",
self)
self.readRspScoreboard = ScorboardOutOfOrder("readRspScoreboard", self)
self.writeRspScoreboard.addListener(self.freeReservatedAddresses)
self.readRspScoreboard.addListener(self.freeReservatedAddresses)
self.cmdTasks = Queue()
self.writeTasks = Queue()
self.nonZeroReadRspCounter = 0
self.nonZeroReadRspCounterTarget = 1000
self.reservedAddresses = {}
StreamDriverSlave(axi.r, clk, reset)
StreamDriverSlave(axi.b, clk, reset)
StreamDriverMaster(axi.arw, self.genReadWriteCmd, clk, reset)
StreamDriverMaster(axi.w, self.genWriteData, clk, reset)
StreamMonitor(axi.r, self.onReadRsp, clk, reset)
StreamMonitor(axi.b, self.onWriteRsp, clk, reset)
axi.w.payload.last <= 0
axi.r.payload.last <= 0
class StreamDriverSlave:
def __init__(self, stream, clk, reset):
self.stream = stream
self.clk = clk
self.reset = reset
self.randomizer = BoolRandomizer()
cocotb.fork(self.stim())
@cocotb.coroutine
def stim(self):
stream = self.stream
stream.ready <= 1
while True:
yield RisingEdge(self.clk)
stream.ready <= self.randomizer.get()
class ReadOnlySlaveDriver:
def __init__(self, axi, base, size, dut):
self.axi = axi
self.size = size
self.base = base
self.dut = dut
self.readRspRand = BoolRandomizer()
self.readRspQueues = [Queue() for i in range(256)]
self.nonEmptyReadRspQueues = []
axi.r.payload.hid <= 0
def createInfrastructure(self):
StreamDriverSlave(self.axi.ar, self.dut.clk, self.dut.reset)
StreamMonitor(self.axi.ar, self.onReadCmd, self.dut.clk,
self.dut.reset)
StreamDriverMaster(self.axi.r, self.genReadRsp, self.dut.clk,
self.dut.reset)
return self
def onReadCmd(self, trans):
if trans.addr < self.base or trans.addr >= self.base + self.size:
raise TestFailure("WRONG ADDRESS addr=%d base=%d size=%d" %
(trans.addr, self.base, self.size))
for i in range(trans.len + 1):
rsp = Transaction()
rsp.data = trans.addr + i
rsp.resp = 0
rsp.hid = trans.hid
if i == trans.len:
rsp.last = 1
else:
rsp.last = 0
queue = self.readRspQueues[trans.hid]
if queue.empty():
self.nonEmptyReadRspQueues.append(queue)
queue.put(rsp)
def genReadRsp(self):
if len(self.nonEmptyReadRspQueues) == 0:
return None
if not self.readRspRand.get():
return None
queue = random.choice(self.nonEmptyReadRspQueues)
trans = queue.get()
if queue.empty():
self.nonEmptyReadRspQueues.remove(queue)
return trans
def __init__(self,id,idToWrites):
self.hid = id
self.readCounter = 0
self.writeCounter = 0
self.doFinish = False
self.readMonitorQueues = [Queue() for i in range(4)] # One queue for each transaction id
self.writeCmdQueue = Queue()
self.writeDataQueue = Queue()
self.idToWrites = idToWrites
self.readCmdIdleRand = BoolRandomizer()
self.writeCmdIdleRand = BoolRandomizer()
self.writeDataIdleRand = BoolRandomizer()
class ReadOnlySlaveDriver:
def __init__(self,axi,base,size,dut):
self.axi = axi
self.size = size
self.base = base
self.dut = dut
self.readRspRand = BoolRandomizer()
self.readRspQueues = [Queue() for i in xrange(256)]
self.nonEmptyReadRspQueues = []
axi.r.payload.hid <= 0
def createInfrastructure(self):
StreamDriverSlave(self.axi.ar, self.dut.clk, self.dut.reset)
StreamMonitor(self.axi.ar, self.onReadCmd, self.dut.clk, self.dut.reset)
StreamDriverMaster(self.axi.r, self.genReadRsp, self.dut.clk, self.dut.reset)
return self
def onReadCmd(self,trans):
if trans.addr < self.base or trans.addr >= self.base + self.size:
raise TestFailure("WRONG ADDRESS addr=%d base=%d size=%d" %(trans.addr,self.base,self.size))
for i in xrange(trans.len+1):
rsp = Transaction()
rsp.data = trans.addr + i
rsp.resp = 0
rsp.hid = trans.hid
if i == trans.len:
rsp.last = 1
else:
rsp.last = 0
queue = self.readRspQueues[trans.hid]
if queue.empty():
self.nonEmptyReadRspQueues.append(queue)
queue.put(rsp)
def genReadRsp(self):
if len(self.nonEmptyReadRspQueues) == 0:
return None
if not self.readRspRand.get():
return None
queue = random.choice(self.nonEmptyReadRspQueues)
trans = queue.get()
if queue.empty():
self.nonEmptyReadRspQueues.remove(queue)
return trans
class ReadOnlyMasterDriver(Infrastructure):
def __init__(self,name,parent,idBase,axi,dut):
Infrastructure.__init__(self,name,parent)
self.idBase = idBase
self.axi = axi
self.dut = dut
self.closeIt = False
self.readCmdIdleRand = BoolRandomizer()
def startPhase(self, phase):
Infrastructure.startPhase(self, phase)
if phase == PHASE_WAIT_TASKS_END:
self.closeIt = True
def createInfrastructure(self):
StreamDriverMaster(self.axi.ar, self.genReadCmd, self.dut.clk, self.dut.reset)
StreamDriverSlave(self.axi.r, self.dut.clk, self.dut.reset)
return self
def genRandomReadAddress(self):
if random.random() < 0.1: # Random assertion of decoding error
return 1 << 14
return randBits(12) + random.choice([0,1,2])*0x1000
def genReadCmd(self):
if self.closeIt:
return None
if not self.readCmdIdleRand.get():
return None
idOffset = randBits(2)
trans = Transaction()
trans.addr = self.genRandomReadAddress()
trans.hid = self.idBase*4 + idOffset #Each master can use 4 id
trans.region = randBits(4)
trans.len = randBits(4)
trans.size = randBits(3)
trans.burst = randBits(2)
trans.lock = randBits(1)
trans.cache = randBits(4)
trans.qos = randBits(4)
trans.prot = randBits(3)
return trans
class ReadOnlyMasterDriver(Infrastructure):
def __init__(self, name, parent, idBase, axi, dut):
Infrastructure.__init__(self, name, parent)
self.idBase = idBase
self.axi = axi
self.dut = dut
self.closeIt = False
self.readCmdIdleRand = BoolRandomizer()
def startPhase(self, phase):
Infrastructure.startPhase(self, phase)
if phase == PHASE_WAIT_TASKS_END:
self.closeIt = True
def createInfrastructure(self):
StreamDriverMaster(self.axi.ar, self.genReadCmd, self.dut.clk,
self.dut.reset)
StreamDriverSlave(self.axi.r, self.dut.clk, self.dut.reset)
return self
def genRandomReadAddress(self):
if random.random() < 0.1: # Random assertion of decoding error
return 1 << 14
return randBits(12) + random.choice([0, 1, 2]) * 0x1000
def genReadCmd(self):
if self.closeIt:
return None
if not self.readCmdIdleRand.get():
return None
idOffset = randBits(2)
trans = Transaction()
trans.addr = self.genRandomReadAddress()
trans.hid = self.idBase * 4 + idOffset #Each master can use 4 id
trans.region = randBits(4)
trans.len = randBits(4)
trans.size = randBits(3)
trans.burst = randBits(2)
trans.lock = randBits(1)
trans.cache = randBits(4)
trans.qos = randBits(4)
trans.prot = randBits(3)
return trans
def __init__(self, name, parent, cmd, rsp, clk, reset):
Infrastructure.__init__(self, name, parent)
StreamDriverMaster(cmd, self.genCmd, clk, reset)
self.nonZeroRspCounter = 0
self.cmdRandomizer = BoolRandomizer()
self.writeRandomizer = BoolRandomizer()
self.burstRandomizer = BoolRandomizer()
self.lastAddr = 0
self.closeIt = False
self.ram = bytearray(b'\x00' * (1 << (9 + 2 + 2 + 1)))
self.scorboard = ScorboardInOrder("scoreboard", self)
StreamDriverSlave(rsp, clk, reset)
# rsp.ready <= 1
StreamMonitor(rsp, self.scorboard.uutPush, clk, reset)
class StreamFifoTester(Infrastructure):
def __init__(self, name, parent, pushStream, popStream,
transactionGenerator, dutCounterTarget, clk, reset):
Infrastructure.__init__(self, name, parent)
self.pushStream = pushStream
self.popStream = popStream
self.clk = clk
self.reset = reset
self.dutCounter = 0
self.closeIt = False
self.transactionGenerator = transactionGenerator
self.dutCounterTarget = dutCounterTarget
self.pushRandomizer = BoolRandomizer()
self.scoreboard = ScorboardInOrder("scoreboard", self)
def createInfrastructure(self):
StreamDriverMaster(self.pushStream, self.genPush, self.clk, self.reset)
StreamDriverSlave(self.popStream, self.clk, self.reset)
StreamMonitor(self.popStream, self.onUut, self.clk, self.reset)
StreamMonitor(self.pushStream, self.onRef, self.clk, self.reset)
def startPhase(self, phase):
Infrastructure.startPhase(self, phase)
if phase == PHASE_WAIT_TASKS_END:
self.closeIt = True
def genPush(self):
if not self.closeIt and self.pushRandomizer.get():
return self.transactionGenerator()
def onUut(self, uut):
self.dutCounter += 1
self.scoreboard.uutPush(uut)
def onRef(self, uut):
self.scoreboard.refPush(uut)
def canPhaseProgress(self, phase):
return self.dutCounter > self.dutCounterTarget
class MasterHandle:
def __init__(self, id, idToWrites):
self.hid = id
self.readCounter = 0
self.writeCounter = 0
self.doFinish = False
self.readMonitorQueues = [Queue() for i in range(4)
] # One queue for each transaction id
self.writeCmdQueue = Queue()
self.writeDataQueue = Queue()
self.idToWrites = idToWrites
self.readCmdIdleRand = BoolRandomizer()
self.writeCmdIdleRand = BoolRandomizer()
self.writeDataIdleRand = BoolRandomizer()
def isCompleted(self):
if not self.doFinish:
return False
for q in self.readMonitorQueues:
if not q.empty():
return False
if not self.writeDataQueue.empty():
return False
if not self.writeCmdQueue.empty():
return False
return True
def genWrite(self):
idOffset = randBits(2)
writeCmd = Transaction()
writeCmd.addr = self.genRandomAddress()
if random.random() < 0.1: # Random assertion of decoding error
writeCmd.addr = 1 << 12
writeCmd.hid = self.hid * 4 + idOffset #Each master can use 4 id
writeCmd.region = randBits(4)
writeCmd.len = randBits(4)
writeCmd.size = randBits(3)
writeCmd.burst = randBits(2)
writeCmd.lock = randBits(1)
writeCmd.cache = randBits(4)
writeCmd.qos = randBits(4)
writeCmd.prot = randBits(3)
self.writeCmdQueue.put(writeCmd)
writeCmd.linkedDatas = []
for i in range(writeCmd.len + 1):
writeData = Transaction()
writeData.data = randBits(32)
writeData.strb = randBits(4)
writeData.last = 1 if i == writeCmd.len else 0
self.writeDataQueue.put(writeData)
writeCmd.linkedDatas.append(writeData)
self.idToWrites[writeCmd.hid].append(writeCmd)
def getNextWriteCmdTrans(self):
if (self.writeCmdQueue.empty()):
if self.doFinish:
return None
self.genWrite()
return self.writeCmdQueue.get()
def getNextWriteDataTrans(self):
if (self.writeDataQueue.empty()):
if self.doFinish:
return None
self.genWrite()
return self.writeDataQueue.get()
def genRandomAddress(self):
while True:
value = randBits(12)
if (value >> 10) != self.hid and ((value >> 8) & 0x3) == self.hid:
return value
def genReadCmd(self):
if self.doFinish:
return None
if not self.readCmdIdleRand.get():
return None
idOffset = randBits(2)
trans = Transaction()
trans.addr = self.genRandomAddress()
if random.random() < 0.1: # Random assertion of decoding error
trans.addr = 1 << 12
trans.hid = self.hid * 4 + idOffset #Each master can use 4 id
trans.region = randBits(4)
trans.len = randBits(4)
trans.size = randBits(3)
trans.burst = randBits(2)
trans.lock = randBits(1)
trans.cache = randBits(4)
trans.qos = randBits(4)
trans.prot = randBits(3)
trans.progress = 0
self.readMonitorQueues[idOffset].put(trans)
# print("Master START %d %x" % (trans.hid, trans.addr))
return trans
def onReadRsp(self, trans):
queue = self.readMonitorQueues[trans.hid - self.hid * 4]
task = queue.queue[0]
if task.addr != 1 << 12:
assertEquals(trans.data, task.addr + task.progress,
"Readed value is wrong")
else:
assertEquals(trans.resp, 3, "yep")
task.progress += 1
if task.progress == task.len + 1:
# print("Master FINISH %d %x" % (task.hid,task.addr))
assertEquals(trans.last, 1, "Should be last read")
queue.get()
self.readCounter += 1
self.updateDoFinish()
def genWriteCmd(self):
if not self.writeCmdIdleRand.get():
return None
return self.getNextWriteCmdTrans()
def genWriteData(self):
if not self.writeDataIdleRand.get():
return None
return self.getNextWriteDataTrans()
def onWriteRsp(self, trans):
self.writeCounter = self.writeCounter + 1
if trans.resp == 3:
write = self.idToWrites[trans.hid][0]
assertEquals(write.addr, (1 << 12), "ERROR ?")
self.idToWrites[trans.hid].remove(write)
self.updateDoFinish()
def updateDoFinish(self):
if self.readCounter > 100 and self.writeCounter > 100:
self.doFinish = True
class SlaveHandle:
def __init__(self, id, idToWrites):
self.tasksQueues = [Queue()
] * 64 # One queue of task for each transaction id
self.hid = id
self.writeCmds = []
self.writeDatas = []
self.idToWrites = idToWrites
self.readRspIdleRand = BoolRandomizer()
self.writeRspIdleRand = BoolRandomizer()
def getRandTaskList(self):
tasksQueuesFiltred = [
tasksList for tasksList in self.tasksQueues
if not tasksList.empty()
]
if len(tasksQueuesFiltred) == 0:
return None
return random.choice(tasksQueuesFiltred)
def genReadRsp(self):
tasksQueue = self.getRandTaskList()
if tasksQueue:
if self.readRspIdleRand.get():
task = tasksQueue.queue[0]
trans = Transaction()
trans.data = task.addr + task.progress
trans.resp = 0
trans.hid = task.hid
task.progress += 1
if task.progress == task.len + 1:
trans.last = 1
tasksQueue.get()
else:
trans.last = 0
return trans
def onReadCmd(self, trans):
trans.progress = 0
assertEquals(trans.addr >> 10, self.hid, ":(")
self.tasksQueues[trans.hid].put(trans)
def onWriteCmd(self, trans):
assertEquals(trans.addr >> 10, self.hid, ":(")
self.writeCmds.append(trans)
def onWriteData(self, trans):
self.writeDatas.append(trans)
def genWriteRsp(self):
if len(self.writeCmds) != 0:
if not self.writeRspIdleRand.get():
return None
cmd = self.writeCmds[0]
beatCount = cmd.len + 1
if len(self.writeDatas) >= beatCount:
datas = self.writeDatas[0:beatCount - 1]
#Check it
masterWrite = next(write
for write in self.idToWrites[cmd.hid & 0xF]
if write.addr >> 10 == self.hid)
assertEquals(cmd.addr, masterWrite.addr, "write cmd missmatch")
assertEquals(cmd.len, masterWrite.len, "write cmd missmatch")
for data, dataRef in zip(datas, masterWrite.linkedDatas):
assertEquals(data.data, dataRef.data,
"write data missmatch")
#Clean
self.writeCmds = self.writeCmds[1:]
self.writeDatas = self.writeDatas[beatCount:]
self.idToWrites[cmd.hid & 0xF].remove(masterWrite)
#Answer
trans = Transaction()
trans.hid = cmd.hid
trans.resp = 0
return trans
return None
def initPort(self, bmbId, bmb, addressRange, lengthMin, lengthMaxAll, clk,
reset):
lengthMax = min(1 << len(bmb.cmd.payload.fragment_length),
lengthMaxAll)
doCmdRand = BoolRandomizer()
doCmdRand.probLow = 0.1
doCmdRand.probHigh = 0.5
cmdTasks = Queue()
rspTasks = Queue()
bytePerBeat = len(bmb.cmd.payload.fragment_data) / 8
def genNewCmd():
length = random.randint(1, (lengthMax // lengthMin)) * lengthMin
if self.doWriteInit:
address = self.writeInitAddress
self.writeInitAddress += length
else:
address = (random.randint(
0, addressRange // lengthMaxAll // len(self.bmbs) - 1) *
len(self.bmbs) + bmbId) * lengthMaxAll
write = random.random() < 0.5 or self.doWriteInit
beatCount = (length + bytePerBeat - 1) // bytePerBeat
context = randBits(len(bmb.cmd.payload.fragment_context))
print("* " + str(context) + " " + str(length) + " " +
str(bytePerBeat) + " " + str(beatCount))
source = 0
if not write:
cmd = Transaction()
cmd.last = True
cmd.fragment_source = source
cmd.fragment_opcode = 0
cmd.fragment_address = address
cmd.fragment_length = length - 1
cmd.fragment_data = randBits(len(
bmb.cmd.payload.fragment_data))
cmd.fragment_mask = randBits(len(
bmb.cmd.payload.fragment_mask))
cmd.fragment_context = context
cmdTasks.put(cmd)
# print("*** R" + str(bmbId) + " " + hex(cmd.fragment_context))
for beat in range(beatCount):
rsp = Transaction()
rsp.last = beat == beatCount - 1
rsp.fragment_source = source
rsp.fragment_context = context
rsp.fragment_opcode = 0
rsp.fragment_data = self.ram.read(
address + beat * bytePerBeat, bytePerBeat)
# print("*** " + str(bmbId) + " " + hex(rsp.fragment_context))
rspTasks.put(rsp)
else:
rsp = Transaction()
rsp.last = True
rsp.fragment_source = source
rsp.fragment_context = context
rsp.fragment_opcode = 0
rsp.fragment_data = None
rspTasks.put(rsp)
# print("*** " + str(bmbId) + " " + hex(rsp.fragment_context))
for beat in range(beatCount):
cmd = Transaction()
cmd.last = beat == beatCount - 1
cmd.fragment_opcode = 1
cmd.fragment_address = address
cmd.fragment_length = length - 1
cmd.fragment_source = source
cmd.fragment_context = context
cmd.fragment_data = randBits(
len(bmb.cmd.payload.fragment_data))
if self.doWriteInit:
cmd.fragment_mask = (
1 << len(bmb.cmd.payload.fragment_mask)) - 1
else:
cmd.fragment_mask = randBits(
len(bmb.cmd.payload.fragment_mask))
cmdTasks.put(cmd)
# print("*** W " + str(bmbId) + " " + hex(cmd.fragment_context) + " " + str(length))
self.ram.write(address + beat * bytePerBeat, bytePerBeat,
cmd.fragment_data, cmd.fragment_mask)
if self.writeInitAddress >= addressRange:
self.writeInitAddress = False
def createCmd():
if doCmdRand.get():
while cmdTasks.empty():
if not self.run:
return None
genNewCmd()
return cmdTasks.get()
def checkRsp(trans):
assert not rspTasks.empty()
trans.assertEqualRef(rspTasks.get())
if trans.last:
self.progress[bmbId] += 1
if self.progress[bmbId] == 10000:
self.hold -= 1
if self.hold == 0:
raise TestSuccess()
StreamDriverMaster(bmb.cmd, createCmd, clk, reset)
StreamMonitor(bmb.rsp, checkRsp, clk, reset)
StreamDriverSlave(bmb.rsp, clk, reset).randomizer.probLow = 0.5
class SdramTester(Infrastructure):
def __init__(self, name, parent, cmd, rsp, clk, reset):
Infrastructure.__init__(self, name, parent)
StreamDriverMaster(cmd, self.genCmd, clk, reset)
self.nonZeroRspCounter = 0
self.cmdRandomizer = BoolRandomizer()
self.writeRandomizer = BoolRandomizer()
self.burstRandomizer = BoolRandomizer()
self.lastAddr = 0
self.closeIt = False
self.ram = bytearray(b'\x00' * (1 << (9 + 2 + 2 + 1)))
self.scorboard = ScorboardInOrder("scoreboard", self)
StreamDriverSlave(rsp, clk, reset)
# rsp.ready <= 1
StreamMonitor(rsp, self.scorboard.uutPush, clk, reset)
def canPhaseProgress(self, phase):
return self.nonZeroRspCounter > 4000
def startPhase(self, phase):
Infrastructure.startPhase(self, phase)
if phase == PHASE_WAIT_TASKS_END:
self.closeIt = True
def genCmd(self):
if self.closeIt or not self.cmdRandomizer.get():
return None
trans = Transaction()
if not self.burstRandomizer.get():
trans.address = randBits(9 + 2 + 2)
else:
trans.address = self.lastAddr + 1
trans.address = trans.address & ((1 << 13) - 1)
trans.write = self.writeRandomizer.get() and self.writeRandomizer.get()
trans.mask = randBits(2)
trans.data = randBits(16)
trans.context = randBits(8)
self.lastAddr = trans.address
if trans.write == 0:
rsp = Transaction()
rsp.data = self.ram[trans.address *
2] + (self.ram[trans.address * 2 + 1] << 8)
rsp.context = trans.context
self.scorboard.refPush(rsp)
if rsp.data != 0:
self.nonZeroRspCounter += 1
if self.nonZeroRspCounter % 50 == 0:
print(("self.nonZeroRspCounter=" +
str(self.nonZeroRspCounter)))
else:
for i in range(2):
if (trans.mask >> i) & 1 == 1:
self.ram[trans.address * 2 + i] = (trans.data >>
(i * 8)) & 0xFF
return trans
class WriteOnlyMasterDriver(Infrastructure):
def __init__(self,name,parent,idBase,axi,dut):
Infrastructure.__init__(self,name,parent)
self.dut = dut
self.axi = axi
self.idBase = idBase
self.writeCmdQueue = Queue()
self.writeDataQueue = Queue()
self.writeCmdIdleRand = BoolRandomizer()
self.writeDataIdleRand = BoolRandomizer()
self.closeIt = False
def startPhase(self, phase):
Infrastructure.startPhase(self, phase)
if phase == PHASE_WAIT_TASKS_END:
self.closeIt = True
def createInfrastructure(self):
StreamDriverMaster(self.axi.aw, self.genWriteCmd, self.dut.clk, self.dut.reset)
StreamDriverMaster(self.axi.w, self.genWriteData, self.dut.clk, self.dut.reset)
StreamDriverSlave(self.axi.b, self.dut.clk, self.dut.reset)
return self
def genRandomWriteAddress(self):
if random.random() < 0.1: # Random assertion of decoding error
return 1 << 14
return randBits(12) + random.choice([0,1,3])*0x1000
def genWrite(self):
idOffset = randBits(2)
writeCmd = Transaction()
writeCmd.addr = self.genRandomWriteAddress()
writeCmd.hid = self.idBase + idOffset #Each master can use 4 id
writeCmd.region = randBits(4)
writeCmd.len = randBits(4)
writeCmd.size = randBits(3)
writeCmd.burst = randBits(2)
writeCmd.lock = randBits(1)
writeCmd.cache = randBits(4)
writeCmd.qos = randBits(4)
writeCmd.prot = randBits(3)
self.writeCmdQueue.put(writeCmd)
for i in xrange(writeCmd.len + 1):
writeData = Transaction()
writeData.data = writeCmd.addr + i
writeData.strb = (writeCmd.addr + i) & 0xF
writeData.last = 1 if i == writeCmd.len else 0
self.writeDataQueue.put(writeData)
def getNextWriteCmdTrans(self):
if(self.writeCmdQueue.empty()):
if self.closeIt:
return None
self.genWrite()
return self.writeCmdQueue.get()
def getNextWriteDataTrans(self):
if(self.writeDataQueue.empty()):
if self.closeIt:
return None
self.genWrite()
return self.writeDataQueue.get()
def genWriteCmd(self):
if not self.writeCmdIdleRand.get():
return None
return self.getNextWriteCmdTrans()
def genWriteData(self):
if not self.writeDataIdleRand.get():
return None
return self.getNextWriteDataTrans()
class Axi4SharedMemoryChecker(Infrastructure):
def __init__(self, name, parent, axi, addressWidth, clk, reset):
Infrastructure.__init__(self, name, parent)
self.axi = axi
if hasattr(axi.arw.payload, "hid"):
self.idWidth = len(axi.arw.payload.hid)
self.addressWidth = addressWidth
self.dataWidth = len(axi.w.payload.data)
self.maxDataBytes = int(log2Up(self.dataWidth) / 8)
self.ram = bytearray(b'\x00' *
((1 << addressWidth) * self.maxDataBytes))
self.doReadWriteCmdRand = BoolRandomizer()
self.readWriteRand = BoolRandomizer()
self.writeDataRand = BoolRandomizer()
self.writeRspScoreboard = ScorboardOutOfOrder("writeRspScoreboard",
self)
self.readRspScoreboard = ScorboardOutOfOrder("readRspScoreboard", self)
self.writeRspScoreboard.addListener(self.freeReservatedAddresses)
self.readRspScoreboard.addListener(self.freeReservatedAddresses)
self.cmdTasks = Queue()
self.writeTasks = Queue()
self.nonZeroReadRspCounter = 0
self.nonZeroReadRspCounterTarget = 1000
self.reservedAddresses = {}
StreamDriverSlave(axi.r, clk, reset)
StreamDriverSlave(axi.b, clk, reset)
StreamDriverMaster(axi.arw, self.genReadWriteCmd, clk, reset)
StreamDriverMaster(axi.w, self.genWriteData, clk, reset)
StreamMonitor(axi.r, self.onReadRsp, clk, reset)
StreamMonitor(axi.b, self.onWriteRsp, clk, reset)
axi.w.payload.last <= 0
axi.r.payload.last <= 0
def freeReservatedAddresses(self, uut, ref, equal):
self.reservedAddresses.pop(ref, None)
def isAddressRangeBusy(self, start, end):
for r in self.reservedAddresses.values():
if start < r[1] and end > r[0]:
return True
return False
def genRandomeAddress(self):
return randBits(self.addressWidth)
def genNewCmd(self):
cmd = Transaction()
cmd.hid = randBits(self.idWidth) # Each master can use 4 id
cmd.region = randBits(4)
cmd.len = randBits(4)
cmd.size = random.randint(0, self.maxDataBytes)
cmd.burst = random.randint(0, 2)
if cmd.burst == 2:
cmd.len = random.choice([2, 4, 8, 16]) - 1
else:
cmd.len = randBits(4) + (16 if random.random() < 0.1 else
0) + (32 if random.random() < 0.02 else 0)
cmd.lock = randBits(1)
cmd.cache = randBits(4)
cmd.qos = randBits(4)
cmd.prot = randBits(3)
byteCount = (1 << cmd.size) * (cmd.len + 1)
while (True):
cmd.addr = self.genRandomeAddress() & ~((1 << cmd.size) - 1)
if cmd.burst == 1:
if cmd.addr + byteCount >= (1 << self.addressWidth):
continue
if cmd.burst == 0:
start = cmd.addr
end = start + cmd.size
if cmd.burst == 1:
start = cmd.addr
end = start + byteCount
if cmd.burst == 2:
start = cmd.addr & ~(byteCount - 1)
end = start + byteCount
if self.isAddressRangeBusy(start, end):
continue
break
if self.readWriteRand.get():
cmd.write = 1
beatAddr = cmd.addr
for i in range(cmd.len + 1):
dataTrans = Transaction()
dataTrans.data = randBits(self.dataWidth)
dataTrans.strb = randBits(self.maxDataBytes)
dataTrans.last = 1 if cmd.len == i else 0
self.writeTasks.put(dataTrans)
for s in range(self.maxDataBytes):
if (dataTrans.strb >> s) & 1 == 1:
self.ram[(beatAddr & ~(self.maxDataBytes - 1)) +
s] = (dataTrans.data >> (s * 8)) & 0xFF
beatAddr = Axi4AddrIncr(beatAddr, cmd.burst, cmd.len, cmd.size)
writeRsp = Transaction()
writeRsp.resp = 0
writeRsp.hid = cmd.hid
self.reservedAddresses[writeRsp] = [start, end]
self.writeRspScoreboard.refPush(writeRsp, writeRsp.hid)
else:
cmd.write = 0
beatAddr = cmd.addr
for s in range(cmd.len + 1):
readRsp = Transaction()
addrBase = beatAddr & ~(self.maxDataBytes - 1)
readRsp.data = 0
for i in range(self.maxDataBytes):
readRsp.data |= self.ram[addrBase + i] << (i * 8)
readRsp.resp = 0
readRsp.last = 1 if cmd.len == s else 0
readRsp.hid = cmd.hid
if readRsp.last == 1:
self.reservedAddresses[readRsp] = [start, end]
self.readRspScoreboard.refPush(readRsp, readRsp.hid)
beatAddr = Axi4AddrIncr(beatAddr, cmd.burst, cmd.len, cmd.size)
self.cmdTasks.put(cmd)
# print(str(len(self.cmdTasks.queue)) + " " + str(len(self.writeTasks.queue)))
def genReadWriteCmd(self):
if self.doReadWriteCmdRand.get():
while self.cmdTasks.empty():
if self.getPhase() != PHASE_SIM:
return None
self.genNewCmd()
return self.cmdTasks.get()
def genWriteData(self):
if self.writeDataRand.get():
while self.writeTasks.empty():
if self.getPhase() != PHASE_SIM:
return None
self.genNewCmd()
return self.writeTasks.get()
def onWriteRsp(self, trans):
if hasattr(trans, "hid"):
self.writeRspScoreboard.uutPush(trans, trans.hid)
def onReadRsp(self, trans):
if hasattr(trans, "hid"):
self.readRspScoreboard.uutPush(trans, trans.hid)
if trans.data != 0:
self.nonZeroReadRspCounter += 1
if self.nonZeroReadRspCounter % 50 == 0:
print("progress=" + str(self.nonZeroReadRspCounter))
# override
def hasEnoughSim(self):
return self.nonZeroReadRspCounter > self.nonZeroReadRspCounterTarget
class WriteOnlyMasterDriver(Infrastructure):
def __init__(self, name, parent, idBase, axi, dut):
Infrastructure.__init__(self, name, parent)
self.dut = dut
self.axi = axi
self.idBase = idBase
self.writeCmdQueue = Queue()
self.writeDataQueue = Queue()
self.writeCmdIdleRand = BoolRandomizer()
self.writeDataIdleRand = BoolRandomizer()
self.closeIt = False
def startPhase(self, phase):
Infrastructure.startPhase(self, phase)
if phase == PHASE_WAIT_TASKS_END:
self.closeIt = True
def createInfrastructure(self):
StreamDriverMaster(self.axi.aw, self.genWriteCmd, self.dut.clk,
self.dut.reset)
StreamDriverMaster(self.axi.w, self.genWriteData, self.dut.clk,
self.dut.reset)
StreamDriverSlave(self.axi.b, self.dut.clk, self.dut.reset)
return self
def genRandomWriteAddress(self):
if random.random() < 0.1: # Random assertion of decoding error
return 1 << 14
return randBits(12) + random.choice([0, 1, 3]) * 0x1000
def genWrite(self):
idOffset = randBits(2)
writeCmd = Transaction()
writeCmd.addr = self.genRandomWriteAddress()
writeCmd.hid = self.idBase + idOffset #Each master can use 4 id
writeCmd.region = randBits(4)
writeCmd.len = randBits(4)
writeCmd.size = randBits(3)
writeCmd.burst = randBits(2)
writeCmd.lock = randBits(1)
writeCmd.cache = randBits(4)
writeCmd.qos = randBits(4)
writeCmd.prot = randBits(3)
self.writeCmdQueue.put(writeCmd)
for i in range(writeCmd.len + 1):
writeData = Transaction()
writeData.data = writeCmd.addr + i
writeData.strb = (writeCmd.addr + i) & 0xF
writeData.last = 1 if i == writeCmd.len else 0
self.writeDataQueue.put(writeData)
def getNextWriteCmdTrans(self):
if (self.writeCmdQueue.empty()):
if self.closeIt:
return None
self.genWrite()
return self.writeCmdQueue.get()
def getNextWriteDataTrans(self):
if (self.writeDataQueue.empty()):
if self.closeIt:
return None
self.genWrite()
return self.writeDataQueue.get()
def genWriteCmd(self):
if not self.writeCmdIdleRand.get():
return None
return self.getNextWriteCmdTrans()
def genWriteData(self):
if not self.writeDataIdleRand.get():
return None
return self.getNextWriteDataTrans()
def __init__(self, name, parent, idBase, axi, dut):
WriteOnlyMasterDriver.__init__(self, name, parent, idBase, axi, dut)
ReadOnlyMasterDriver.__init__(self, name, parent, idBase, axi, dut)
self.readOrWriteRand = BoolRandomizer()
class WriteOnlySlaveDriver:
def __init__(self, axi, base, size, dut):
self.axi = axi
self.size = size
self.base = base
self.dut = dut
self.writeRspRand = BoolRandomizer()
self.writeCmds = []
self.writeDatas = []
self.writeRspQueues = [Queue() for i in range(256)]
self.nonEmptyWriteRspQueues = []
axi.b.payload.hid <= 0
def createInfrastructure(self):
StreamDriverSlave(self.axi.aw, self.dut.clk, self.dut.reset)
StreamDriverSlave(self.axi.w, self.dut.clk, self.dut.reset)
StreamMonitor(self.axi.aw, self.onWriteCmd, self.dut.clk,
self.dut.reset)
StreamMonitor(self.axi.w, self.onWriteData, self.dut.clk,
self.dut.reset)
StreamDriverMaster(self.axi.b, self.genWriteRsp, self.dut.clk,
self.dut.reset)
return self
def onWriteCmd(self, trans):
if trans.addr < self.base or trans.addr >= self.base + self.size:
raise TestFailure("WRONG ADDRESS addr=%d base=%d size=%d" %
(trans.addr, self.base, self.size))
self.writeCmds.append(trans)
self.managePendingWrites()
def onWriteData(self, trans):
self.writeDatas.append(trans)
self.managePendingWrites()
def managePendingWrites(self):
if len(self.writeCmds) != 0:
cmd = self.writeCmds[0]
beatCount = cmd.len + 1
if len(self.writeDatas) >= beatCount:
datas = self.writeDatas[0:beatCount - 1]
# Clean
self.writeCmds = self.writeCmds[1:]
self.writeDatas = self.writeDatas[beatCount:]
# Rsp
rsp = Transaction()
rsp.hid = cmd.hid
rsp.resp = 0
queue = self.writeRspQueues[cmd.hid]
if queue.empty():
self.nonEmptyWriteRspQueues.append(queue)
queue.put(rsp)
def genWriteRsp(self):
if len(self.nonEmptyWriteRspQueues) == 0:
return None
if not self.writeRspRand.get():
return None
queue = random.choice(self.nonEmptyWriteRspQueues)
trans = queue.get()
if queue.empty():
self.nonEmptyWriteRspQueues.remove(queue)
return trans
class WriteOnlySlaveDriver:
def __init__(self,axi,base,size,dut):
self.axi = axi
self.size = size
self.base = base
self.dut = dut
self.writeRspRand = BoolRandomizer()
self.writeCmds = []
self.writeDatas = []
self.writeRspQueues = [Queue() for i in xrange(256)]
self.nonEmptyWriteRspQueues = []
axi.b.payload.hid <= 0
def createInfrastructure(self):
StreamDriverSlave(self.axi.aw, self.dut.clk, self.dut.reset)
StreamDriverSlave(self.axi.w, self.dut.clk, self.dut.reset)
StreamMonitor(self.axi.aw, self.onWriteCmd, self.dut.clk, self.dut.reset)
StreamMonitor(self.axi.w, self.onWriteData, self.dut.clk, self.dut.reset)
StreamDriverMaster(self.axi.b, self.genWriteRsp, self.dut.clk, self.dut.reset)
return self
def onWriteCmd(self,trans):
if trans.addr < self.base or trans.addr >= self.base + self.size:
raise TestFailure("WRONG ADDRESS addr=%d base=%d size=%d" %(trans.addr,self.base,self.size))
self.writeCmds.append(trans)
self.managePendingWrites()
def onWriteData(self, trans):
self.writeDatas.append(trans)
self.managePendingWrites()
def managePendingWrites(self):
if len(self.writeCmds) != 0:
cmd = self.writeCmds[0]
beatCount = cmd.len + 1
if len(self.writeDatas) >= beatCount:
datas = self.writeDatas[0:beatCount - 1]
# Clean
self.writeCmds = self.writeCmds[1:]
self.writeDatas = self.writeDatas[beatCount:]
# Rsp
rsp = Transaction()
rsp.hid = cmd.hid
rsp.resp = 0
queue = self.writeRspQueues[cmd.hid]
if queue.empty():
self.nonEmptyWriteRspQueues.append(queue)
queue.put(rsp)
def genWriteRsp(self):
if len(self.nonEmptyWriteRspQueues) == 0:
return None
if not self.writeRspRand.get():
return None
queue = random.choice(self.nonEmptyWriteRspQueues)
trans = queue.get()
if queue.empty():
self.nonEmptyWriteRspQueues.remove(queue)
return trans
def __init__(self,name,parent,idBase,axi,dut):
WriteOnlyMasterDriver.__init__(self,name,parent, idBase, axi, dut)
ReadOnlyMasterDriver.__init__(self,name,parent, idBase, axi, dut)
self.readOrWriteRand = BoolRandomizer()
def __init__(self, stream, clk, reset):
self.stream = stream
self.clk = clk
self.reset = reset
self.randomizer = BoolRandomizer()
cocotb.fork(self.stim())
