25 lines
981 B
Python
25 lines
981 B
Python
from liteeth.common import *
|
|
from liteeth.generic.arbiter import Arbiter
|
|
from liteeth.generic.dispatcher import Dispatcher
|
|
from liteeth.mac import LiteEthMAC
|
|
from liteeth.arp import LiteEthARP
|
|
from liteeth.ip import LiteEthIP
|
|
|
|
class LiteEthIPStack(Module, AutoCSR):
|
|
def __init__(self, phy, mac_address, ip_address):
|
|
self.phy = phy
|
|
self.submodules.mac = mac = LiteEthMAC(phy, 8, interface="mac", with_hw_preamble_crc=True)
|
|
self.submodules.arp = arp = LiteEthARP(mac_address, ip_address)
|
|
self.submodules.ip = ip = LiteEthIP(ip_address, arp.table)
|
|
|
|
# MAC dispatch
|
|
self.submodules.mac_dispatcher = Dispatcher(mac.source, [arp.sink, ip.sink], one_hot=True)
|
|
self.comb += \
|
|
Case(mac.source.ethernet_type, {
|
|
ethernet_type_arp : [self.mac_dispatcher.sel.eq(1)],
|
|
ethernet_type_ip : [self.mac_dispatcher.sel.eq(2)],
|
|
"default" : [self.mac_dispatcher.sel.eq(0)],
|
|
})
|
|
# MAC arbitrate
|
|
self.submodules.mac_arbiter = Arbiter([arp.source, ip.source], mac.sink)
|