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mac/core: Separate crc and premable block 

So it can be more easily moved later on
This commit is contained in:
David Sawatzke 2021-08-08 16:01:33 +02:00
parent be492e32de
commit 8b8dae9fac
1 changed files with 19 additions and 17 deletions
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32
liteeth/mac/core.py
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@ -44,37 +44,39 @@ class LiteEthMACCore(Module, AutoCSR):
self._preamble_crc = CSRStatus(reset=1)
elif with_preamble_crc:
self._preamble_crc = CSRStatus(reset=1)
self.preamble_errors = CSRStatus(32)
self.crc_errors = CSRStatus(32)
# Preamble insert/check
preamble_inserter = preamble.LiteEthMACPreambleInserter(dw)
preamble_checker = preamble.LiteEthMACPreambleChecker(dw)
self.submodules += ClockDomainsRenamer(cd_tx)(preamble_inserter)
self.submodules += ClockDomainsRenamer(cd_rx)(preamble_checker)
tx_pipeline += [preamble_inserter]
rx_pipeline += [preamble_checker]
self.submodules.ps_preamble_error = PulseSynchronizer(cd_rx, "sys")
# Preamble error counter
self.preamble_errors = CSRStatus(32)
self.comb += self.ps_preamble_error.i.eq(preamble_checker.error),
self.sync += If(self.ps_preamble_error.o,
self.preamble_errors.status.eq(self.preamble_errors.status + 1)),
if not isinstance(phy, LiteEthPHYModel) and with_preamble_crc:
# CRC insert/check
crc32_inserter = BufferizeEndpoints({"sink": DIR_SINK})(crc.LiteEthMACCRC32Inserter(eth_phy_description(dw)))
crc32_checker = BufferizeEndpoints({"sink": DIR_SINK})(crc.LiteEthMACCRC32Checker(eth_phy_description(dw)))
self.submodules += ClockDomainsRenamer(cd_tx)(crc32_inserter)
self.submodules += ClockDomainsRenamer(cd_rx)(crc32_checker)
tx_pipeline += [preamble_inserter, crc32_inserter]
rx_pipeline += [preamble_checker, crc32_checker]
tx_pipeline += [crc32_inserter]
rx_pipeline += [crc32_checker]
# Error counters
self.submodules.ps_preamble_error = PulseSynchronizer(cd_rx, "sys")
# CRC error counter
self.crc_errors = CSRStatus(32)
self.submodules.ps_crc_error = PulseSynchronizer(cd_rx, "sys")
self.comb += [
self.ps_preamble_error.i.eq(preamble_checker.error),
self.ps_crc_error.i.eq(crc32_checker.error),
]
self.sync += [
If(self.ps_preamble_error.o,
self.preamble_errors.status.eq(self.preamble_errors.status + 1)),
If(self.ps_crc_error.o,
self.comb += self.ps_crc_error.i.eq(crc32_checker.error),
self.sync += If(self.ps_crc_error.o,
self.crc_errors.status.eq(self.crc_errors.status + 1)),
]
if sys_data_path:
self.data_path_converter(tx_pipeline, rx_pipeline, core_dw, phy.dw, endianness)