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Diffstat (limited to 'fpga/usrp3/top/x300/nirio_chdr64_adapter.v')
| -rw-r--r-- | fpga/usrp3/top/x300/nirio_chdr64_adapter.v | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/fpga/usrp3/top/x300/nirio_chdr64_adapter.v b/fpga/usrp3/top/x300/nirio_chdr64_adapter.v new file mode 100644 index 000000000..05976105b --- /dev/null +++ b/fpga/usrp3/top/x300/nirio_chdr64_adapter.v @@ -0,0 +1,106 @@ +// +// Copyright 2019 Ettus Research, A National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Module: nirio_chdr64_adapter +// +// Description: A transport adapter specific to connecting an NI-RIO streaming +// interface to CHDR. It assumes to be connected to x300_pcie_int. +// See also chdr_xport_adapter_generic. +// +// The tuser inputs/outputs used for routing are the index of the DMA channel. +// Because we have 6 DMA channels on NI-RIO on the X300, these are always 3 +// bits wide. +// +// Parameters: +// - PROTOVER: RFNoC protocol version {8'd<major>, 8'd<minor>} +// - MTU: Log2 of the MTU of the packet in 64-bit words +// - RT_TBL_SIZE: Log2 of the depth of the return-address routing table +// - NODE_INST: The node type to return for a node-info discovery +// +// Signals: +// - device_id : The ID of the device that has instantiated this module +// - s_dma_*: The input Ethernet stream from the MAC (plus tuser for source DMA engine ID) +// - m_dma_*: The output Ethernet stream to the MAC (plus tuser for dest DMA engine ID) +// - s_chdr_*: The input CHDR stream from the rfnoc infrastructure +// - m_chdr_*: The output CHDR stream to the rfnoc infrastructure +// + +module nirio_chdr64_adapter #( + parameter [15:0] PROTOVER = {8'd1, 8'd0}, + parameter MTU = 10, + parameter RT_TBL_SIZE = 6, + parameter NODE_INST = 0, + parameter DMA_ID_WIDTH = 3 +)( + // Clocking and reset interface + input wire clk, + input wire rst, + // Device info + input wire [15:0] device_id, + // AXI-Stream interface to/from DMA engines + input wire [63:0] s_dma_tdata, + input wire [DMA_ID_WIDTH-1:0] s_dma_tuser, + input wire s_dma_tlast, + input wire s_dma_tvalid, + output wire s_dma_tready, + output wire [63:0] m_dma_tdata, + output wire [DMA_ID_WIDTH-1:0] m_dma_tuser, + output wire m_dma_tlast, + output wire m_dma_tvalid, + input wire m_dma_tready, + // AXI-Stream interface to/from CHDR infrastructure + input wire [63:0] s_chdr_tdata, + input wire s_chdr_tlast, + input wire s_chdr_tvalid, + output wire s_chdr_tready, + output wire [63:0] m_chdr_tdata, + output wire m_chdr_tlast, + output wire m_chdr_tvalid, + input wire m_chdr_tready +); + + `include "../../lib/rfnoc/core/rfnoc_chdr_utils.vh" + `include "../../lib/rfnoc/core/rfnoc_chdr_internal_utils.vh" + `include "../../lib/rfnoc/xport/rfnoc_xport_types.vh" + + //--------------------------------------- + // CHDR Transport Adapter + //--------------------------------------- + + chdr_xport_adapter_generic #( + .PROTOVER(PROTOVER), .CHDR_W(64), + .USER_W(DMA_ID_WIDTH), .TBL_SIZE(RT_TBL_SIZE), + .NODE_SUBTYPE(NODE_SUBTYPE_XPORT_NIRIO_CHDR64), .NODE_INST(NODE_INST) + ) xport_adapter_gen_i ( + .clk (clk), + .rst (rst), + .device_id (device_id), + .s_axis_xport_tdata (s_dma_tdata), + .s_axis_xport_tuser (s_dma_tuser), + .s_axis_xport_tlast (s_dma_tlast), + .s_axis_xport_tvalid(s_dma_tvalid), + .s_axis_xport_tready(s_dma_tready), + .m_axis_xport_tdata (m_dma_tdata), + .m_axis_xport_tuser (m_dma_tuser), + .m_axis_xport_tlast (m_dma_tlast), + .m_axis_xport_tvalid(m_dma_tvalid), + .m_axis_xport_tready(m_dma_tready), + .s_axis_rfnoc_tdata (s_chdr_tdata), + .s_axis_rfnoc_tlast (s_chdr_tlast), + .s_axis_rfnoc_tvalid(s_chdr_tvalid), + .s_axis_rfnoc_tready(s_chdr_tready), + .m_axis_rfnoc_tdata (m_chdr_tdata), + .m_axis_rfnoc_tlast (m_chdr_tlast), + .m_axis_rfnoc_tvalid(m_chdr_tvalid), + .m_axis_rfnoc_tready(m_chdr_tready), + .ctrlport_req_wr (/* unused */), + .ctrlport_req_rd (/* unused */), + .ctrlport_req_addr (/* unused */), + .ctrlport_req_data (/* unused */), + .ctrlport_resp_ack (/* unused */ 1'b0), + .ctrlport_resp_data (/* unused */ 32'd0) + ); + +endmodule // liberio_chdr64_adapter |