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corundum/rtl/pcie_axi_master.v
Alex Forencich 23705eb873 Update PCIe TLP demux to handle segments 
Signed-off-by: Alex Forencich <alex@alexforencich.com>
2022-07-02 23:39:38 -07:00

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Verilog
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/*
Copyright (c) 2021 Alex Forencich
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
// Language: Verilog 2001
`resetall
`timescale 1ns / 1ps
`default_nettype none
/*
* PCIe AXI Master
*/
module pcie_axi_master #
(
// TLP data width
parameter TLP_DATA_WIDTH = 256,
// TLP strobe width
parameter TLP_STRB_WIDTH = TLP_DATA_WIDTH/32,
// TLP header width
parameter TLP_HDR_WIDTH = 128,
// TLP segment count
parameter TLP_SEG_COUNT = 1,
// Width of AXI data bus in bits
parameter AXI_DATA_WIDTH = TLP_DATA_WIDTH,
// Width of AXI address bus in bits
parameter AXI_ADDR_WIDTH = 64,
// Width of AXI wstrb (width of data bus in words)
parameter AXI_STRB_WIDTH = (AXI_DATA_WIDTH/8),
// Width of AXI ID signal
parameter AXI_ID_WIDTH = 8,
// Maximum AXI burst length to generate
parameter AXI_MAX_BURST_LEN = 256,
// Force 64 bit address
parameter TLP_FORCE_64_BIT_ADDR = 0
)
(
input wire clk,
input wire rst,
/*
* TLP input (request)
*/
input wire [TLP_DATA_WIDTH-1:0] rx_req_tlp_data,
input wire [TLP_SEG_COUNT*TLP_HDR_WIDTH-1:0] rx_req_tlp_hdr,
input wire [TLP_SEG_COUNT-1:0] rx_req_tlp_valid,
input wire [TLP_SEG_COUNT-1:0] rx_req_tlp_sop,
input wire [TLP_SEG_COUNT-1:0] rx_req_tlp_eop,
output wire rx_req_tlp_ready,
/*
* TLP output (completion)
*/
output wire [TLP_DATA_WIDTH-1:0] tx_cpl_tlp_data,
output wire [TLP_STRB_WIDTH-1:0] tx_cpl_tlp_strb,
output wire [TLP_SEG_COUNT*TLP_HDR_WIDTH-1:0] tx_cpl_tlp_hdr,
output wire [TLP_SEG_COUNT-1:0] tx_cpl_tlp_valid,
output wire [TLP_SEG_COUNT-1:0] tx_cpl_tlp_sop,
output wire [TLP_SEG_COUNT-1:0] tx_cpl_tlp_eop,
input wire tx_cpl_tlp_ready,
/*
* AXI Master output
*/
output wire [AXI_ID_WIDTH-1:0] m_axi_awid,
output wire [AXI_ADDR_WIDTH-1:0] m_axi_awaddr,
output wire [7:0] m_axi_awlen,
output wire [2:0] m_axi_awsize,
output wire [1:0] m_axi_awburst,
output wire m_axi_awlock,
output wire [3:0] m_axi_awcache,
output wire [2:0] m_axi_awprot,
output wire m_axi_awvalid,
input wire m_axi_awready,
output wire [AXI_DATA_WIDTH-1:0] m_axi_wdata,
output wire [AXI_STRB_WIDTH-1:0] m_axi_wstrb,
output wire m_axi_wlast,
output wire m_axi_wvalid,
input wire m_axi_wready,
input wire [AXI_ID_WIDTH-1:0] m_axi_bid,
input wire [1:0] m_axi_bresp,
input wire m_axi_bvalid,
output wire m_axi_bready,
output wire [AXI_ID_WIDTH-1:0] m_axi_arid,
output wire [AXI_ADDR_WIDTH-1:0] m_axi_araddr,
output wire [7:0] m_axi_arlen,
output wire [2:0] m_axi_arsize,
output wire [1:0] m_axi_arburst,
output wire m_axi_arlock,
output wire [3:0] m_axi_arcache,
output wire [2:0] m_axi_arprot,
output wire m_axi_arvalid,
input wire m_axi_arready,
input wire [AXI_ID_WIDTH-1:0] m_axi_rid,
input wire [AXI_DATA_WIDTH-1:0] m_axi_rdata,
input wire [1:0] m_axi_rresp,
input wire m_axi_rlast,
input wire m_axi_rvalid,
output wire m_axi_rready,
/*
* Configuration
*/
input wire [15:0] completer_id,
input wire [2:0] max_payload_size,
/*
* Status
*/
output wire status_error_cor,
output wire status_error_uncor
);
wire [1:0] status_error_uncor_int;
wire [TLP_DATA_WIDTH-1:0] read_rx_req_tlp_data;
wire [TLP_SEG_COUNT*TLP_HDR_WIDTH-1:0] read_rx_req_tlp_hdr;
wire [TLP_SEG_COUNT-1:0] read_rx_req_tlp_valid;
wire [TLP_SEG_COUNT-1:0] read_rx_req_tlp_sop;
wire [TLP_SEG_COUNT-1:0] read_rx_req_tlp_eop;
wire read_rx_req_tlp_ready;
wire [TLP_DATA_WIDTH-1:0] write_rx_req_tlp_data;
wire [TLP_SEG_COUNT*TLP_HDR_WIDTH-1:0] write_rx_req_tlp_hdr;
wire [TLP_SEG_COUNT-1:0] write_rx_req_tlp_valid;
wire [TLP_SEG_COUNT-1:0] write_rx_req_tlp_sop;
wire [TLP_SEG_COUNT-1:0] write_rx_req_tlp_eop;
wire write_rx_req_tlp_ready;
wire [TLP_SEG_COUNT*TLP_HDR_WIDTH-1:0] match_tlp_hdr;
wire [TLP_SEG_COUNT*2-1:0] select;
generate
genvar n;
for (n = 0; n < TLP_SEG_COUNT; n = n + 1) begin
assign select[n*2+1] = match_tlp_hdr[n*TLP_HDR_WIDTH+120 +: 8] == 8'b010_00000 ||
match_tlp_hdr[n*TLP_HDR_WIDTH+120 +: 8] == 8'b011_00000;
assign select[n*2+0] = !select[n*2+1];
end
endgenerate
pcie_tlp_demux #(
.PORTS(2),
.TLP_DATA_WIDTH(TLP_DATA_WIDTH),
.TLP_STRB_WIDTH(TLP_STRB_WIDTH),
.TLP_HDR_WIDTH(TLP_HDR_WIDTH),
.IN_TLP_SEG_COUNT(TLP_SEG_COUNT),
.OUT_TLP_SEG_COUNT(TLP_SEG_COUNT),
.FIFO_ENABLE(0)
)
pcie_tlp_demux_inst (
.clk(clk),
.rst(rst),
/*
* TLP input
*/
.in_tlp_data(rx_req_tlp_data),
.in_tlp_strb(0),
.in_tlp_hdr(rx_req_tlp_hdr),
.in_tlp_bar_id(0),
.in_tlp_func_num(0),
.in_tlp_error(0),
.in_tlp_valid(rx_req_tlp_valid),
.in_tlp_sop(rx_req_tlp_sop),
.in_tlp_eop(rx_req_tlp_eop),
.in_tlp_ready(rx_req_tlp_ready),
/*
* TLP output
*/
.out_tlp_data({write_rx_req_tlp_data, read_rx_req_tlp_data}),
.out_tlp_strb(),
.out_tlp_hdr({write_rx_req_tlp_hdr, read_rx_req_tlp_hdr}),
.out_tlp_bar_id(),
.out_tlp_func_num(),
.out_tlp_error(),
.out_tlp_valid({write_rx_req_tlp_valid, read_rx_req_tlp_valid}),
.out_tlp_sop({write_rx_req_tlp_sop, read_rx_req_tlp_sop}),
.out_tlp_eop({write_rx_req_tlp_eop, read_rx_req_tlp_eop}),
.out_tlp_ready({write_rx_req_tlp_ready, read_rx_req_tlp_ready}),
/*
* Fields
*/
.match_tlp_hdr(match_tlp_hdr),
.match_tlp_bar_id(),
.match_tlp_func_num(),
/*
* Control
*/
.enable(1'b1),
.drop({TLP_SEG_COUNT{1'b0}}),
.select(select),
/*
* Status
*/
.fifo_half_full(),
.fifo_watermark()
);
pcie_axi_master_rd #(
.TLP_DATA_WIDTH(TLP_DATA_WIDTH),
.TLP_STRB_WIDTH(TLP_STRB_WIDTH),
.TLP_HDR_WIDTH(TLP_HDR_WIDTH),
.TLP_SEG_COUNT(TLP_SEG_COUNT),
.AXI_DATA_WIDTH(AXI_DATA_WIDTH),
.AXI_ADDR_WIDTH(AXI_ADDR_WIDTH),
.AXI_STRB_WIDTH(AXI_STRB_WIDTH),
.AXI_ID_WIDTH(AXI_ID_WIDTH),
.AXI_MAX_BURST_LEN(AXI_MAX_BURST_LEN),
.TLP_FORCE_64_BIT_ADDR(TLP_FORCE_64_BIT_ADDR)
)
pcie_axi_master_rd_inst (
.clk(clk),
.rst(rst),
/*
* TLP input (request)
*/
.rx_req_tlp_hdr(read_rx_req_tlp_hdr),
.rx_req_tlp_valid(read_rx_req_tlp_valid),
.rx_req_tlp_sop(read_rx_req_tlp_sop),
.rx_req_tlp_eop(read_rx_req_tlp_eop),
.rx_req_tlp_ready(read_rx_req_tlp_ready),
/*
* TLP output (completion)
*/
.tx_cpl_tlp_data(tx_cpl_tlp_data),
.tx_cpl_tlp_strb(tx_cpl_tlp_strb),
.tx_cpl_tlp_hdr(tx_cpl_tlp_hdr),
.tx_cpl_tlp_valid(tx_cpl_tlp_valid),
.tx_cpl_tlp_sop(tx_cpl_tlp_sop),
.tx_cpl_tlp_eop(tx_cpl_tlp_eop),
.tx_cpl_tlp_ready(tx_cpl_tlp_ready),
/*
* AXI master interface
*/
.m_axi_arid(m_axi_arid),
.m_axi_araddr(m_axi_araddr),
.m_axi_arlen(m_axi_arlen),
.m_axi_arsize(m_axi_arsize),
.m_axi_arburst(m_axi_arburst),
.m_axi_arlock(m_axi_arlock),
.m_axi_arcache(m_axi_arcache),
.m_axi_arprot(m_axi_arprot),
.m_axi_arvalid(m_axi_arvalid),
.m_axi_arready(m_axi_arready),
.m_axi_rid(m_axi_rid),
.m_axi_rdata(m_axi_rdata),
.m_axi_rresp(m_axi_rresp),
.m_axi_rlast(m_axi_rlast),
.m_axi_rvalid(m_axi_rvalid),
.m_axi_rready(m_axi_rready),
/*
* Configuration
*/
.completer_id(completer_id),
.max_payload_size(max_payload_size),
/*
* Status
*/
.status_error_cor(status_error_cor),
.status_error_uncor(status_error_uncor_int[0])
);
pcie_axi_master_wr #(
.TLP_DATA_WIDTH(TLP_DATA_WIDTH),
.TLP_HDR_WIDTH(TLP_HDR_WIDTH),
.TLP_SEG_COUNT(TLP_SEG_COUNT),
.AXI_DATA_WIDTH(AXI_DATA_WIDTH),
.AXI_ADDR_WIDTH(AXI_ADDR_WIDTH),
.AXI_STRB_WIDTH(AXI_STRB_WIDTH),
.AXI_ID_WIDTH(AXI_ID_WIDTH),
.AXI_MAX_BURST_LEN(AXI_MAX_BURST_LEN),
.TLP_FORCE_64_BIT_ADDR(TLP_FORCE_64_BIT_ADDR)
)
pcie_axi_master_wr_inst (
.clk(clk),
.rst(rst),
/*
* TLP input (request)
*/
.rx_req_tlp_data(write_rx_req_tlp_data),
.rx_req_tlp_hdr(write_rx_req_tlp_hdr),
.rx_req_tlp_valid(write_rx_req_tlp_valid),
.rx_req_tlp_sop(write_rx_req_tlp_sop),
.rx_req_tlp_eop(write_rx_req_tlp_eop),
.rx_req_tlp_ready(write_rx_req_tlp_ready),
/*
* AXI master interface
*/
.m_axi_awid(m_axi_awid),
.m_axi_awaddr(m_axi_awaddr),
.m_axi_awlen(m_axi_awlen),
.m_axi_awsize(m_axi_awsize),
.m_axi_awburst(m_axi_awburst),
.m_axi_awlock(m_axi_awlock),
.m_axi_awcache(m_axi_awcache),
.m_axi_awprot(m_axi_awprot),
.m_axi_awvalid(m_axi_awvalid),
.m_axi_awready(m_axi_awready),
.m_axi_wdata(m_axi_wdata),
.m_axi_wstrb(m_axi_wstrb),
.m_axi_wlast(m_axi_wlast),
.m_axi_wvalid(m_axi_wvalid),
.m_axi_wready(m_axi_wready),
.m_axi_bid(m_axi_bid),
.m_axi_bresp(m_axi_bresp),
.m_axi_bvalid(m_axi_bvalid),
.m_axi_bready(m_axi_bready),
/*
* Status
*/
.status_error_uncor(status_error_uncor_int[1])
);
pulse_merge #(
.INPUT_WIDTH(2),
.COUNT_WIDTH(4)
)
status_error_uncor_pm_inst (
.clk(clk),
.rst(rst),
.pulse_in(status_error_uncor_int),
.count_out(),
.pulse_out(status_error_uncor)
);
endmodule
`resetall
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