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frontend/etherbone: expose buffer_depth to user.

This commit is contained in:
Florent Kermarrec 2020-11-23 17:44:47 +01:00
parent 47100c5c4e
commit c6cfed6294
1 changed files with 5 additions and 5 deletions
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10
liteeth/frontend/etherbone.py
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@ -323,7 +323,7 @@ class LiteEthEtherboneRecordSender(Module):
class LiteEthEtherboneRecord(Module):
def __init__(self, endianness="big"):
def __init__(self, endianness="big", buffer_depth=4):
self.sink = sink = stream.Endpoint(eth_etherbone_packet_user_description(32))
self.source = source = stream.Endpoint(eth_etherbone_packet_user_description(32))
@ -331,7 +331,7 @@ class LiteEthEtherboneRecord(Module):
# Receive record, decode it and generate mmap stream
self.submodules.depacketizer = depacketizer = LiteEthEtherboneRecordDepacketizer()
self.submodules.receiver = receiver = LiteEthEtherboneRecordReceiver()
self.submodules.receiver = receiver = LiteEthEtherboneRecordReceiver(buffer_depth)
self.comb += [
sink.connect(depacketizer.sink),
depacketizer.source.connect(receiver.sink)
@ -352,7 +352,7 @@ class LiteEthEtherboneRecord(Module):
]
# Receive MMAP stream, encode it and send records
self.submodules.sender = sender = LiteEthEtherboneRecordSender()
self.submodules.sender = sender = LiteEthEtherboneRecordSender(buffer_depth)
self.submodules.packetizer = packetizer = LiteEthEtherboneRecordPacketizer()
self.comb += [
sender.source.connect(packetizer.sink),
@ -495,13 +495,13 @@ class LiteEthEtherboneWishboneSlave(Module):
# Etherbone ----------------------------------------------------------------------------------------
class LiteEthEtherbone(Module):
def __init__(self, udp, udp_port, mode="master", cd="sys"):
def __init__(self, udp, udp_port, mode="master", buffer_depth=4, cd="sys"):
# Encode/encode etherbone packets
self.submodules.packet = packet = LiteEthEtherbonePacket(udp, udp_port, cd)
# Packets can be probe (etherbone discovering) or records with writes and reads
self.submodules.probe = probe = LiteEthEtherboneProbe()
self.submodules.record = record = LiteEthEtherboneRecord()
self.submodules.record = record = LiteEthEtherboneRecord(buffer_depth=buffer_depth)
# Arbitrate/dispatch probe/records packets
dispatcher = Dispatcher(packet.source, [probe.sink, record.sink])