def _write_data(self):
clock_re = RisingEdge(self.clock)
while True:
while True:
self.bus.WREADY <= 0
yield ReadOnly()
yield NextTimeStep()
if self.bus.AWVALID.value:
self.bus.WREADY <= 1
break
yield clock_re
yield ReadOnly()
_awaddr = int(self.bus.AWADDR)
_awlen = int(self.bus.AWLEN)
_awsize = int(self.bus.AWSIZE)
_awburst = int(self.bus.AWBURST)
_awprot = int(self.bus.AWPROT)
burst_length = _awlen + 1
bytes_in_beat = self._size_to_bytes_in_beat(_awsize)
word = BinaryValue(bits=bytes_in_beat*8, bigEndian=self.big_endain)
if __debug__:
self.log.debug(
"AWADDR 0x{:x}\n".format(_awaddr) +
"AWLEN %d\n" % _awlen +
"AWSIZE %d\n" % _awsize +
"AWBURST %d\n" % _awburst +
"BURST_LENGTH %d\n" % burst_length +
"Bytes in beat %d\n" % bytes_in_beat)
burst_count = burst_length
yield clock_re
while True:
if self.bus.WVALID.value:
word = self.bus.WDATA.value
word.big_endian = self.big_endain
_burst_diff = burst_length - burst_count
_st = _awaddr + (_burst_diff * bytes_in_beat) # start
_end = _awaddr + ((_burst_diff + 1) * bytes_in_beat) # end
self._memory[_st:_end] = array.array('B', word.get_buff())
burst_count -= 1
if burst_count == 0:
self.bus.BVALID.value = 1
while self.bus.BREADY == 0:
yield clock_re
self.bus.BVALID.value = 0
break
yield clock_re
def _write_data(self):
clock_re = RisingEdge(self.clock)
while True:
while True:
self.bus.WREADY <= 0
yield ReadOnly()
if self.bus.AWVALID.value:
self.bus.WREADY <= 1
break
yield clock_re
yield ReadOnly()
_awaddr = int(self.bus.AWADDR)
_awlen = int(self.bus.AWLEN)
_awsize = int(self.bus.AWSIZE)
_awburst = int(self.bus.AWBURST)
_awprot = int(self.bus.AWPROT)
burst_length = _awlen + 1
bytes_in_beat = self._size_to_bytes_in_beat(_awsize)
word = BinaryValue(bits=bytes_in_beat*8, bigEndian=self.big_endain)
if __debug__:
self.log.debug(
"AWADDR %d\n" % _awaddr +
"AWLEN %d\n" % _awlen +
"AWSIZE %d\n" % _awsize +
"AWBURST %d\n" % _awburst +
"BURST_LENGTH %d\n" % burst_length +
"Bytes in beat %d\n" % bytes_in_beat)
burst_count = burst_length
yield clock_re
while True:
if self.bus.WVALID.value:
word = self.bus.WDATA.value
word.big_endian = self.big_endain
_burst_diff = burst_length - burst_count
_st = _awaddr + (_burst_diff * bytes_in_beat) # start
_end = _awaddr + ((_burst_diff + 1) * bytes_in_beat) # end
self._memory[_st:_end] = array.array('B', word.get_buff())
burst_count -= 1
if burst_count == 0:
break
yield clock_re
def _write_data(self):
clock_re = RisingEdge(self.clock)
while True:
while True:
self.bus.WREADY <= 0
yield ReadOnly()
if self.bus.AWVALID.value:
self.bus.WREADY <= 1
break
yield clock_re
yield ReadOnly()
_awaddr = int(self.bus.AWADDR)
_awlen = int(self.bus.AWLEN)
_awsize = int(self.bus.AWSIZE)
_awburst = int(self.bus.AWBURST)
_awprot = int(self.bus.AWPROT)
burst_length = _awlen + 1
bytes_in_beat = self._size_to_bytes_in_beat(_awsize)
word = BinaryValue(bits=bytes_in_beat*8, bigEndian=self.big_endain)
if __debug__:
self.log.debug(
"AWADDR %d\n" % _awaddr +
"AWLEN %d\n" % _awlen +
"AWSIZE %d\n" % _awsize +
"AWBURST %d\n" % _awburst +
"BURST_LENGTH %d\n" % burst_length +
"Bytes in beat %d\n" % bytes_in_beat)
burst_count = burst_length
yield clock_re
while True:
if self.bus.WVALID.value:
word = self.bus.WDATA.value
word.big_endian = self.big_endain
self._memory[_awaddr+((burst_length-burst_count)*bytes_in_beat):_awaddr+(((burst_length-burst_count)+1)*bytes_in_beat)] = array.array('B',word.get_buff())
burst_count -= 1
if burst_count == 0:
break
yield clock_re
def _monitor_recv(self):
"""Watch the pins and reconstruct transactions."""
# Avoid spurious object creation by recycling
clkedge = RisingEdge(self.clock)
rdonly = ReadOnly()
pkt = ""
in_pkt = False
invalid_cyclecount = 0
channel = None
def valid():
if hasattr(self.bus, 'ready'):
return self.bus.valid.value and self.bus.ready.value
return self.bus.valid.value
while True:
yield clkedge
yield rdonly
if self.in_reset:
continue
if valid():
invalid_cyclecount = 0
if self.bus.startofpacket.value:
if pkt:
raise AvalonProtocolError(
"Duplicate start-of-packet received on %s" %
str(self.bus.startofpacket))
pkt = ""
in_pkt = True
if not in_pkt:
raise AvalonProtocolError("Data transfer outside of "
"packet")
# Handle empty and X's in empty / data
vec = BinaryValue()
if not self.bus.endofpacket.value:
vec = self.bus.data.value
else:
value = self.bus.data.value.get_binstr()
if self.config["useEmpty"] and self.bus.empty.value.integer:
empty = self.bus.empty.value.integer * self.config[
"dataBitsPerSymbol"]
if self.config["firstSymbolInHighOrderBits"]:
value = value[:-empty]
else:
value = value[empty:]
vec.assign(value)
if not vec.is_resolvable:
raise AvalonProtocolError(
"After empty masking value is still bad? "
"Had empty {:d}, got value {:s}".format(
empty, self.bus.data.value.get_binstr()))
vec.big_endian = self.config['firstSymbolInHighOrderBits']
pkt += vec.buff
if hasattr(self.bus, 'channel'):
if channel is None:
channel = self.bus.channel.value.integer
if channel > self.config["maxChannel"]:
raise AvalonProtocolError(
"Channel value (%d) is greater than maxChannel (%d)"
% (channel, self.config["maxChannel"]))
elif self.bus.channel.value.integer != channel:
raise AvalonProtocolError(
"Channel value changed during packet")
if self.bus.endofpacket.value:
self.log.info("Received a packet of %d bytes", len(pkt))
self.log.debug(hexdump(str((pkt))))
self.channel = channel
if self.report_channel:
self._recv({"data": pkt, "channel": channel})
else:
self._recv(pkt)
pkt = ""
in_pkt = False
channel = None
else:
if in_pkt:
invalid_cyclecount += 1
if self.config["invalidTimeout"]:
if invalid_cyclecount >= self.config["invalidTimeout"]:
raise AvalonProtocolError(
"In-Packet Timeout. Didn't receive any valid data for %d cycles!"
% invalid_cyclecount)
def _monitor_recv(self):
"""Watch the pins and reconstruct transactions."""
# Avoid spurious object creation by recycling
clkedge = RisingEdge(self.clock)
rdonly = ReadOnly()
pkt = ""
in_pkt = False
invalid_cyclecount = 0
channel = None
def valid():
if hasattr(self.bus, 'ready'):
return self.bus.valid.value and self.bus.ready.value
return self.bus.valid.value
while True:
yield clkedge
yield rdonly
if self.in_reset:
continue
if valid():
invalid_cyclecount = 0
if self.bus.startofpacket.value:
if pkt and self.config['fail_immediately']:
raise AvalonProtocolError(
"Duplicate start-of-packet received on %s" % (
str(self.bus.startofpacket)))
pkt = ""
in_pkt = True
if not in_pkt and self.config['fail_immediately']:
raise AvalonProtocolError("Data transfer outside of "
"packet")
# Handle empty and X's in empty / data
vec = BinaryValue()
if not self.bus.endofpacket.value:
vec = self.bus.data.value
else:
value = self.bus.data.value.get_binstr()
if self.config["useEmpty"] and self.bus.empty.value.integer:
empty = self.bus.empty.value.integer * self.config["dataBitsPerSymbol"]
if self.config["firstSymbolInHighOrderBits"]:
value = value[:-empty]
else:
value = value[empty:]
vec.assign(value)
if not vec.is_resolvable:
raise AvalonProtocolError("After empty masking value is still bad? Had empty {:d}, got value {:s}".format(empty, self.bus.data.value.get_binstr()))
vec.big_endian = self.config['firstSymbolInHighOrderBits']
pkt += vec.buff
if hasattr(self.bus, 'channel'):
if channel is None:
channel = self.bus.channel.value.integer
if channel > self.config["maxChannel"]:
raise AvalonProtocolError("Channel value (%d) is greater than maxChannel (%d)" % (channel,self.config["maxChannel"]))
elif self.bus.channel.value.integer != channel:
raise AvalonProtocolError("Channel value changed during packet")
if self.bus.endofpacket.value:
self.log.info("Received a packet of %d bytes" % len(pkt))
self.log.debug(hexdump(str((pkt))))
self.channel = channel
self._recv(pkt)
pkt = ""
in_pkt = False
channel = None
else :
if in_pkt :
invalid_cyclecount += 1
if self.config["invalidTimeout"] :
if invalid_cyclecount >= self.config["invalidTimeout"] :
raise AvalonProtocolError(
"In-Packet Timeout. Didn't receive any valid data for %d cycles!" %
invalid_cyclecount)
