Add patched liteeth.core module to allow hybrid mode

https://github.com/enjoy-digital/liteeth/pull/116

gen_liteeth.py

@@ -27,7 +27,7 @@ from liteeth.common import *
 
 from liteeth import phy as liteeth_phys
 from liteeth.mac import LiteEthMAC
-from liteeth.core import LiteEthUDPIPCore
+from liteeth_cores import LiteEthUDPIPCore
 from liteeth.core.udp import LiteEthUDP
 
 # IOs ----------------------------------------------------------------------------------------------

liteeth_cores.py

@@ -0,0 +1,96 @@
+#
+# This file is part of LiteEth.
+#
+# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# SPDX-License-Identifier: BSD-2-Clause
+
+from liteeth.common import *
+from liteeth.mac import LiteEthMAC
+from liteeth.core.arp import LiteEthARP
+from liteeth.core.ip import LiteEthIP
+from liteeth.core.udp import LiteEthUDP
+from liteeth.core.icmp import LiteEthICMP
+
+# IP Core ------------------------------------------------------------------------------------------
+
+class LiteEthIPCore(Module, AutoCSR):
+    def __init__(self, phy, mac_address, ip_address, clk_freq, dw=8,
+        hybrid            = False,
+        with_icmp         = True,
+        with_ip_broadcast = True,
+        with_sys_datapath = False):
+        # Parameters.
+        # -----------
+        ip_address = convert_ip(ip_address)
+
+        # MAC.
+        # ----
+        self.submodules.mac = LiteEthMAC(
+            phy       = phy,
+            dw        = dw,
+            interface = "hybrid" if hybrid else "crossbar",
+            with_preamble_crc = True,
+            with_sys_datapath = with_sys_datapath,
+        )
+
+        # ARP.
+        # ----
+        self.submodules.arp = LiteEthARP(
+            mac         = self.mac,
+            mac_address = mac_address,
+            ip_address  = ip_address,
+            clk_freq    = clk_freq,
+            dw          = dw,
+        )
+
+        # IP.
+        # ---
+        self.submodules.ip  = LiteEthIP(
+            mac            = self.mac,
+            mac_address    = mac_address,
+            ip_address     = ip_address,
+            arp_table      = self.arp.table,
+            with_broadcast = with_ip_broadcast,
+            dw             = dw,
+        )
+        # ICMP (Optional).
+        # ----------------
+        if with_icmp:
+            self.submodules.icmp = LiteEthICMP(
+                ip         = self.ip,
+                ip_address = ip_address,
+                dw         = dw,
+            )
+
+# UDP IP Core --------------------------------------------------------------------------------------
+
+class LiteEthUDPIPCore(LiteEthIPCore):
+    def __init__(self, phy, mac_address, ip_address, clk_freq, dw=8,
+        hybrid=False,
+        with_icmp         = True,
+        with_ip_broadcast = True,
+        with_sys_datapath = False):
+        # Parameters.
+        # -----------
+        ip_address = convert_ip(ip_address)
+
+        # Core: MAC + ARP + IP + (ICMP).
+        # ------------------------------
+        LiteEthIPCore.__init__(self,
+            phy         = phy,
+            mac_address = mac_address,
+            ip_address  = ip_address,
+            clk_freq    = clk_freq,
+            hybrid      = hybrid,
+            with_icmp   = with_icmp,
+            dw          = dw,
+            with_ip_broadcast = with_ip_broadcast,
+            with_sys_datapath = with_sys_datapath,
+        )
+        # UDP.
+        # ----
+        self.submodules.udp = LiteEthUDP(
+            ip         = self.ip,
+            ip_address = ip_address,
+            dw         = dw,
+        )