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)