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 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
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)
