45 lines
1.2 KiB
Python
45 lines
1.2 KiB
Python
|
import math
|
||
|
|
from collections import OrderedDict
|
||
|
|
|
||
|
|
from migen.fhdl.std import *
|
||
|
|
from migen.genlib.resetsync import AsyncResetSynchronizer
|
||
|
|
from migen.genlib.record import *
|
||
|
|
from migen.genlib.fsm import FSM, NextState
|
||
|
|
from migen.genlib.misc import chooser, reverse_bytes, FlipFlop, Counter, WaitTimer
|
||
|
|
from migen.flow.actor import *
|
||
|
|
from migen.actorlib.structuring import Converter, Pipeline
|
||
|
|
from migen.actorlib.fifo import SyncFIFO, AsyncFIFO
|
||
|
|
from migen.actorlib.packet import *
|
||
|
|
from migen.bank.description import *
|
||
|
|
|
||
|
|
class Port:
|
||
|
|
def connect(self, port):
|
||
|
|
r = [
|
||
|
|
Record.connect(self.source, port.sink),
|
||
|
|
Record.connect(port.source, self.sink)
|
||
|
|
]
|
||
|
|
return r
|
||
|
|
|
||
|
|
eth_mtu = 1532
|
||
|
|
eth_min_len = 46
|
||
|
|
eth_interpacket_gap = 12
|
||
|
|
eth_preamble = 0xD555555555555555
|
||
|
|
buffer_depth = 2**log2_int(eth_mtu, need_pow2=False)
|
||
|
|
|
||
|
|
def eth_phy_description(dw):
|
||
|
|
payload_layout = [
|
||
|
|
("data", dw),
|
||
|
|
("last_be", dw//8),
|
||
|
|
("error", dw//8)
|
||
|
|
]
|
||
|
|
return EndpointDescription(payload_layout, packetized=True)
|
||
|
|
|
||
|
|
|
||
|
|
def eth_mac_description(dw):
|
||
|
|
payload_layout = mac_header.get_layout() + [
|
||
|
|
("data", dw),
|
||
|
|
("last_be", dw//8),
|
||
|
|
("error", dw//8)
|
||
|
|
]
|
||
|
|
return EndpointDescription(payload_layout, packetized=True)
|