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Merge pull request #853 from mczerski/liteeth_slots 

liteeth: allow to specify nrxslots and ntxslots for liteeth
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enjoy-digital 2021-03-19 08:58:44 +01:00 committed by GitHub
parent d0c4199096 6eaa426e37
commit db353526c1
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 8 additions and 4 deletions
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9
litex/soc/integration/soc.py
View File

@ -1359,7 +1359,7 @@ class LiteXSoC(SoC):
base_address = self.bus.regions["main_ram"].origin)
# Add Ethernet ---------------------------------------------------------------------------------
def add_ethernet(self, name="ethmac", phy=None, phy_cd="eth", dynamic_ip=False, software_debug=False):
def add_ethernet(self, name="ethmac", phy=None, phy_cd="eth", dynamic_ip=False, software_debug=False, nrxslots=2, ntxslots=2):
# Imports
from liteeth.mac import LiteEthMAC
@ -1369,12 +1369,15 @@ class LiteXSoC(SoC):
dw = 32,
interface = "wishbone",
endianness = self.cpu.endianness,
with_preamble_crc = not software_debug)
with_preamble_crc = not software_debug,
nrxslots = nrxslots,
ntxslots = ntxslots)
ethmac = ClockDomainsRenamer({
"eth_tx": phy_cd + "_tx",
"eth_rx": phy_cd + "_rx"})(ethmac)
setattr(self.submodules, name, ethmac)
ethmac_region = SoCRegion(origin=self.mem_map.get(name, None), size=0x2000, cached=False)
ethmac_region_size = (ethmac.rx_slots.read()+ethmac.tx_slots.read())*ethmac.slot_size.read()
ethmac_region = SoCRegion(origin=self.mem_map.get(name, None), size=ethmac_region_size, cached=False)
self.bus.add_slave(name=name, slave=ethmac.bus, region=ethmac_region)
self.csr.add(name, use_loc_if_exists=True)
if self.irq.enabled:

3
litex/tools/litex_json2dts.py
View File

@ -200,7 +200,7 @@ def generate_dts(d, initrd_start=None, initrd_size=None, polling=False):
compatible = "litex,liteeth";
reg = <0x{ethmac_csr_base:x} 0x7c>,
<0x{ethphy_csr_base:x} 0x0a>,
<0x{ethmac_mem_base:x} 0x2000>;
<0x{ethmac_mem_base:x} 0x{ethmac_mem_size:x}>;
tx-fifo-depth = <{ethmac_tx_slots}>;
rx-fifo-depth = <{ethmac_rx_slots}>;
{ethmac_interrupt}
@ -210,6 +210,7 @@ def generate_dts(d, initrd_start=None, initrd_size=None, polling=False):
ethphy_csr_base = d["csr_bases"]["ethphy"],
ethmac_csr_base = d["csr_bases"]["ethmac"],
ethmac_mem_base = d["memories"]["ethmac"]["base"],
ethmac_mem_size = d["memories"]["ethmac"]["size"],
ethmac_tx_slots = d["constants"]["ethmac_tx_slots"],
ethmac_rx_slots = d["constants"]["ethmac_rx_slots"],
ethmac_interrupt = "" if polling else "interrupts = <{}>;".format(d["constants"]["ethmac_interrupt"]))