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fpga: lib: Add ZPU support to SV transport adapter

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Original-commit: 105d8d1661d76bfe7264798a691b061366c94898
This commit is contained in:
Wade Fife
2023-01-10 14:18:59 -08:00
committed by michael-west
parent c847bec9e1
commit 6c4c231aa5
5 changed files with 282 additions and 222 deletions
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lib/rfnoc/xport_sv/eth_ipv4_chdr_adapter.sv
+10 -5
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@@ -42,7 +42,10 @@
// NODE_INST : The node type to return for a node-info discovery
// DROP_UNKNOWN_MAC : Drop packets not addressed to us?
// DROP_MIN_PACKET : Drop packets smaller than 64 bytes?
// PREAMBLE_BYTES : Number of bytes of Preamble expected
// PREAMBLE_BYTES : Number of bytes of preamble on Ethernet interface
// CPU_PREAMBLE : Set to 1 to use PREAMBLE_BYTES on CPU interface
// (for ZPU) or set to 0 to remove preamble on CPU
// interface (for ARM CPU).
// ADD_SOF : Add a SOF indication into the tuser field of the e2c
// path. If false use TKEEP instead of USER.
// SYNC : Set to 1 if the c2e/e2c, v2e/e2v, and eth_rx/eth_tx are
@@ -80,6 +83,7 @@ module eth_ipv4_chdr_adapter #(
bit DROP_UNKNOWN_MAC = 0,
bit DROP_MIN_PACKET = 0,
int PREAMBLE_BYTES = 6,
bit CPU_PREAMBLE = 0,
bit ADD_SOF = 1,
bit SYNC = 0,
int ENET_W = 64,
@@ -180,11 +184,12 @@ module eth_ipv4_chdr_adapter #(
.CPU_FIFO_SIZE (CPU_FIFO_SIZE),
.CHDR_FIFO_SIZE (CHDR_FIFO_SIZE),
.PREAMBLE_BYTES (PREAMBLE_BYTES),
.CPU_PREAMBLE (CPU_PREAMBLE),
.MAX_PACKET_BYTES (MAX_PACKET_BYTES),
.DROP_UNKNOWN_MAC (DROP_UNKNOWN_MAC),
.DROP_MIN_PACKET (DROP_MIN_PACKET),
.ENET_W (ENET_W)
) eth_dispatch_i (
) eth_ipv4_chdr_dispatch_i (
.eth_pause_req (eth_pause_req),
.eth_rx (eth_rx1),
.e2v (e2v1),
@@ -379,17 +384,17 @@ module eth_ipv4_chdr_adapter #(
end
end
if (PREAMBLE_BYTES > 0) begin : gen_add_preamble
if (PREAMBLE_BYTES > 0 && !CPU_PREAMBLE) begin : gen_c2e_add_preamble
// Add pad of PREAMBLE_BYTES empty bytes to the ethernet packet going
// from the CPU to the SFP. This padding added before MAC addresses
// aligns the source and destination IP addresses, UDP headers etc.
// Note that the xge_mac_wrapper strips this padding to recreate the
// ethernet packet.
axi4s_add_bytes #(.ADD_START(0),.ADD_BYTES(PREAMBLE_BYTES)
) add_header (
) axi4s_add_bytes_c2e (
.i(c2e1), .o(c2e2)
);
end else begin : gen_no_preamble
end else begin : gen_c2e_no_preamble
always_comb begin : c2e2_assign
`AXI4S_ASSIGN(c2e2,c2e1)
end