366 lines
10 KiB
Python
366 lines
10 KiB
Python
import math
|
|
import copy
|
|
|
|
from liteeth.common import *
|
|
from liteeth.test.common import *
|
|
|
|
from liteeth.test.model import udp
|
|
|
|
|
|
def print_etherbone(s):
|
|
print_with_prefix(s, "[ETHERBONE]")
|
|
|
|
|
|
# Etherbone model
|
|
class EtherboneWrite:
|
|
def __init__(self, data):
|
|
self.data = data
|
|
|
|
def __repr__(self):
|
|
return "WR32 0x{:08x}".format(self.data)
|
|
|
|
|
|
class EtherboneRead:
|
|
def __init__(self, addr):
|
|
self.addr = addr
|
|
|
|
def __repr__(self):
|
|
return "RD32 @ 0x{:08x}".format(self.addr)
|
|
|
|
|
|
class EtherboneWrites(Packet):
|
|
def __init__(self, init=[], base_addr=0, datas=[]):
|
|
Packet.__init__(self, init)
|
|
self.base_addr = base_addr
|
|
self.writes = []
|
|
self.encoded = init != []
|
|
for data in datas:
|
|
self.add(EtherboneWrite(data))
|
|
|
|
def add(self, write):
|
|
self.writes.append(write)
|
|
|
|
def get_datas(self):
|
|
datas = []
|
|
for write in self.writes:
|
|
datas.append(write.data)
|
|
return datas
|
|
|
|
def encode(self):
|
|
if self.encoded:
|
|
raise ValueError
|
|
for byte in split_bytes(self.base_addr, 4):
|
|
self.append(byte)
|
|
for write in self.writes:
|
|
for byte in split_bytes(write.data, 4):
|
|
self.append(byte)
|
|
self.encoded = True
|
|
|
|
def decode(self):
|
|
if not self.encoded:
|
|
raise ValueError
|
|
base_addr = []
|
|
for i in range(4):
|
|
base_addr.append(self.pop(0))
|
|
self.base_addr = merge_bytes(base_addr)
|
|
self.writes = []
|
|
while len(self) != 0:
|
|
write = []
|
|
for i in range(4):
|
|
write.append(self.pop(0))
|
|
self.writes.append(EtherboneWrite(merge_bytes(write)))
|
|
self.encoded = False
|
|
|
|
def __repr__(self):
|
|
r = "Writes\n"
|
|
r += "--------\n"
|
|
r += "BaseAddr @ 0x{:08x}\n".format(self.base_addr)
|
|
for write in self.writes:
|
|
r += write.__repr__() + "\n"
|
|
return r
|
|
|
|
|
|
class EtherboneReads(Packet):
|
|
def __init__(self, init=[], base_ret_addr=0, addrs=[]):
|
|
Packet.__init__(self, init)
|
|
self.base_ret_addr = base_ret_addr
|
|
self.reads = []
|
|
self.encoded = init != []
|
|
for addr in addrs:
|
|
self.add(EtherboneRead(addr))
|
|
|
|
def add(self, read):
|
|
self.reads.append(read)
|
|
|
|
def get_addrs(self):
|
|
addrs = []
|
|
for read in self.reads:
|
|
addrs.append(read.addr)
|
|
return addrs
|
|
|
|
def encode(self):
|
|
if self.encoded:
|
|
raise ValueError
|
|
for byte in split_bytes(self.base_ret_addr, 4):
|
|
self.append(byte)
|
|
for read in self.reads:
|
|
for byte in split_bytes(read.addr, 4):
|
|
self.append(byte)
|
|
self.encoded = True
|
|
|
|
def decode(self):
|
|
if not self.encoded:
|
|
raise ValueError
|
|
base_ret_addr = []
|
|
for i in range(4):
|
|
base_ret_addr.append(self.pop(0))
|
|
self.base_ret_addr = merge_bytes(base_ret_addr)
|
|
self.reads = []
|
|
while len(self) != 0:
|
|
read = []
|
|
for i in range(4):
|
|
read.append(self.pop(0))
|
|
self.reads.append(EtherboneRead(merge_bytes(read)))
|
|
self.encoded = False
|
|
|
|
def __repr__(self):
|
|
r = "Reads\n"
|
|
r += "--------\n"
|
|
r += "BaseRetAddr @ 0x{:08x}\n".format(self.base_ret_addr)
|
|
for read in self.reads:
|
|
r += read.__repr__() + "\n"
|
|
return r
|
|
|
|
|
|
class EtherboneRecord(Packet):
|
|
def __init__(self, init=[]):
|
|
Packet.__init__(self, init)
|
|
self.writes = None
|
|
self.reads = None
|
|
self.encoded = init != []
|
|
|
|
def get_writes(self):
|
|
if self.wcount == 0:
|
|
return None
|
|
else:
|
|
writes = []
|
|
for i in range((self.wcount+1)*4):
|
|
writes.append(self.pop(0))
|
|
return EtherboneWrites(writes)
|
|
|
|
def get_reads(self):
|
|
if self.rcount == 0:
|
|
return None
|
|
else:
|
|
reads = []
|
|
for i in range((self.rcount+1)*4):
|
|
reads.append(self.pop(0))
|
|
return EtherboneReads(reads)
|
|
|
|
def decode(self):
|
|
if not self.encoded:
|
|
raise ValueError
|
|
header = []
|
|
for byte in self[:etherbone_record_header.length]:
|
|
header.append(self.pop(0))
|
|
for k, v in sorted(etherbone_record_header.fields.items()):
|
|
setattr(self, k, get_field_data(v, header))
|
|
self.writes = self.get_writes()
|
|
if self.writes is not None:
|
|
self.writes.decode()
|
|
self.reads = self.get_reads()
|
|
if self.reads is not None:
|
|
self.reads.decode()
|
|
self.encoded = False
|
|
|
|
def set_writes(self, writes):
|
|
self.wcount = len(writes.writes)
|
|
writes.encode()
|
|
for byte in writes:
|
|
self.append(byte)
|
|
|
|
def set_reads(self, reads):
|
|
self.rcount = len(reads.reads)
|
|
reads.encode()
|
|
for byte in reads:
|
|
self.append(byte)
|
|
|
|
def encode(self):
|
|
if self.encoded:
|
|
raise ValueError
|
|
if self.writes is not None:
|
|
self.set_writes(self.writes)
|
|
if self.reads is not None:
|
|
self.set_reads(self.reads)
|
|
header = 0
|
|
for k, v in sorted(etherbone_record_header.fields.items()):
|
|
value = merge_bytes(split_bytes(getattr(self, k),
|
|
math.ceil(v.width/8)),
|
|
"little")
|
|
header += (value << v.offset+(v.byte*8))
|
|
for d in split_bytes(header, etherbone_record_header.length):
|
|
self.insert(0, d)
|
|
self.encoded = True
|
|
|
|
def __repr__(self, n=0):
|
|
r = "Record {}\n".format(n)
|
|
r += "--------\n"
|
|
if self.encoded:
|
|
for d in self:
|
|
r += "{:02x}".format(d)
|
|
else:
|
|
for k in sorted(etherbone_record_header.fields.keys()):
|
|
r += k + " : 0x{:0x}\n".format(getattr(self, k))
|
|
if self.wcount != 0:
|
|
r += self.writes.__repr__()
|
|
if self.rcount != 0:
|
|
r += self.reads.__repr__()
|
|
return r
|
|
|
|
|
|
class EtherbonePacket(Packet):
|
|
def __init__(self, init=[]):
|
|
Packet.__init__(self, init)
|
|
self.encoded = init != []
|
|
self.records = []
|
|
|
|
self.magic = etherbone_magic
|
|
self.version = etherbone_version
|
|
self.addr_size = 32//8
|
|
self.port_size = 32//8
|
|
self.nr = 0
|
|
self.pr = 0
|
|
self.pf = 0
|
|
|
|
def get_records(self):
|
|
records = []
|
|
done = False
|
|
payload = self
|
|
while len(payload) != 0:
|
|
record = EtherboneRecord(payload)
|
|
record.decode()
|
|
records.append(copy.deepcopy(record))
|
|
payload = record
|
|
return records
|
|
|
|
def decode(self):
|
|
if not self.encoded:
|
|
raise ValueError
|
|
header = []
|
|
for byte in self[:etherbone_packet_header.length]:
|
|
header.append(self.pop(0))
|
|
for k, v in sorted(etherbone_packet_header.fields.items()):
|
|
setattr(self, k, get_field_data(v, header))
|
|
self.records = self.get_records()
|
|
self.encoded = False
|
|
|
|
def set_records(self, records):
|
|
for record in records:
|
|
record.encode()
|
|
for byte in record:
|
|
self.append(byte)
|
|
|
|
def encode(self):
|
|
if self.encoded:
|
|
raise ValueError
|
|
self.set_records(self.records)
|
|
header = 0
|
|
for k, v in sorted(etherbone_packet_header.fields.items()):
|
|
value = merge_bytes(split_bytes(getattr(self, k), math.ceil(v.width/8)), "little")
|
|
header += (value << v.offset+(v.byte*8))
|
|
for d in split_bytes(header, etherbone_packet_header.length):
|
|
self.insert(0, d)
|
|
self.encoded = True
|
|
|
|
def __repr__(self):
|
|
r = "Packet\n"
|
|
r += "--------\n"
|
|
if self.encoded:
|
|
for d in self:
|
|
r += "{:02x}".format(d)
|
|
else:
|
|
for k in sorted(etherbone_packet_header.fields.keys()):
|
|
r += k + " : 0x{:0x}\n".format(getattr(self, k))
|
|
for i, record in enumerate(self.records):
|
|
r += record.__repr__(i)
|
|
return r
|
|
|
|
|
|
class Etherbone(Module):
|
|
def __init__(self, udp, debug=False):
|
|
self.udp = udp
|
|
self.debug = debug
|
|
self.tx_packets = []
|
|
self.tx_packet = EtherbonePacket()
|
|
self.rx_packet = EtherbonePacket()
|
|
|
|
udp.set_etherbone_callback(self.callback)
|
|
|
|
def send(self, packet):
|
|
packet.encode()
|
|
if self.debug:
|
|
print_etherbone(">>>>>>>>")
|
|
print_etherbone(packet)
|
|
udp_packet = udp.UDPPacket(packet)
|
|
udp_packet.src_port = 0x1234 # XXX
|
|
udp_packet.dst_port = 20000 # XXX
|
|
udp_packet.length = len(packet)
|
|
udp_packet.checksum = 0
|
|
self.udp.send(udp_packet)
|
|
|
|
def receive(self):
|
|
self.rx_packet = EtherbonePacket()
|
|
while not self.rx_packet.done:
|
|
yield
|
|
|
|
def callback(self, packet):
|
|
packet = EtherbonePacket(packet)
|
|
packet.decode()
|
|
if self.debug:
|
|
print_etherbone("<<<<<<<<")
|
|
print_etherbone(packet)
|
|
self.rx_packet = packet
|
|
self.rx_packet.done = True
|
|
self.process(packet)
|
|
|
|
def process(self, packet):
|
|
pass
|
|
|
|
if __name__ == "__main__":
|
|
# Writes/Reads
|
|
writes = EtherboneWrites(base_addr=0x1000, datas=[i for i in range(16)])
|
|
reads = EtherboneReads(base_ret_addr=0x2000, addrs=[i for i in range(16)])
|
|
|
|
# Record
|
|
record = EtherboneRecord()
|
|
record.writes = writes
|
|
record.reads = reads
|
|
record.bca = 0
|
|
record.rca = 0
|
|
record.rff = 0
|
|
record.cyc = 0
|
|
record.wca = 0
|
|
record.wff = 0
|
|
record.byte_enable = 0
|
|
record.wcount = len(writes.get_datas())
|
|
record.rcount = len(reads.get_addrs())
|
|
|
|
# Packet
|
|
packet = EtherbonePacket()
|
|
packet.records = [copy.deepcopy(record) for i in range(8)]
|
|
packet.nr = 0
|
|
packet.pr = 0
|
|
packet.pf = 0
|
|
# print(packet)
|
|
packet.encode()
|
|
# print(packet)
|
|
|
|
# Send packet over UDP to check against Wireshark dissector
|
|
import socket
|
|
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
|
sock.sendto(bytes(packet), ("192.168.1.1", 20000))
|
|
|
|
packet = EtherbonePacket(packet)
|
|
packet.decode()
|
|
print(packet)
|