1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
//
// Copyright 2015 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: LGPL-3.0-or-later
//
// NoC input port
// Implements destination flow control and sequence number error handling for a single port
module noc_input_port #(
parameter SR_FLOW_CTRL_BYTES_PER_ACK = 1,
parameter SR_ERROR_POLICY = 2,
parameter STR_SINK_FIFOSIZE = 11,
parameter USE_TIME = 0
)(
input clk, input reset, input clear, // Note: Clear is used to clear the FIFO and flow control
input [31:0] resp_sid, // Stream ID used with response packets
input set_stb, input [7:0] set_addr, input [31:0] set_data,
// To / From NoC Shell
input [63:0] i_tdata, input i_tlast, input i_tvalid, output i_tready,
output [63:0] o_tdata, output o_tlast, output o_tvalid, input o_tready,
// Flow control and error packets
output [63:0] fc_tdata, output fc_tlast, output fc_tvalid, input fc_tready
);
// Receive window / buffer
wire [63:0] int_tdata;
wire int_tlast, int_tvalid, int_tready;
chdr_fifo_large #(.SIZE(STR_SINK_FIFOSIZE)) axi_fifo_receive_window (
.clk(clk), .reset(reset), .clear(clear),
.i_tdata(i_tdata), .i_tlast(i_tlast), .i_tvalid(i_tvalid), .i_tready(i_tready),
.o_tdata(int_tdata), .o_tlast(int_tlast), .o_tvalid(int_tvalid), .o_tready(int_tready));
// Flow control and error packet handling
wire [63:0] fc_int_tdata, resp_int_tdata;
wire fc_int_tlast, fc_int_tvalid, fc_int_tready, resp_int_tlast, resp_int_tvalid, resp_int_tready;
noc_responder #(
.SR_FLOW_CTRL_BYTES_PER_ACK(SR_FLOW_CTRL_BYTES_PER_ACK),
.SR_ERROR_POLICY(SR_ERROR_POLICY),
.USE_TIME(USE_TIME))
noc_responder (
.clk(clk), .reset(reset), .clear(clear),
.resp_sid(resp_sid),
.set_stb(set_stb), .set_addr(set_addr), .set_data(set_data),
.i_tdata(int_tdata), .i_tlast(int_tlast), .i_tvalid(int_tvalid), .i_tready(int_tready),
.o_tdata(o_tdata), .o_tlast(o_tlast), .o_tvalid(o_tvalid), .o_tready(o_tready),
.fc_tdata(fc_int_tdata), .fc_tlast(fc_int_tlast), .fc_tvalid(fc_int_tvalid), .fc_tready(fc_int_tready),
.resp_tdata(resp_int_tdata), .resp_tlast(resp_int_tlast), .resp_tvalid(resp_int_tvalid), .resp_tready(resp_int_tready));
axi_mux #(.PRIO(0), .WIDTH(64), .PRE_FIFO_SIZE(0), .POST_FIFO_SIZE(1), .SIZE(2)) axi_mux (
.clk(clk), .reset(reset), .clear(clear),
.i_tdata({fc_int_tdata, resp_int_tdata}), .i_tlast({fc_int_tlast, resp_int_tlast}),
.i_tvalid({fc_int_tvalid, resp_int_tvalid}), .i_tready({fc_int_tready, resp_int_tready}),
.o_tdata(fc_tdata), .o_tlast(fc_tlast), .o_tvalid(fc_tvalid), .o_tready(fc_tready));
endmodule
|
