aboutsummaryrefslogtreecommitdiffstats
path: root/fpga/usrp3/lib/fifo
diff options
context:
space:
mode:
Diffstat (limited to 'fpga/usrp3/lib/fifo')
-rw-r--r--fpga/usrp3/lib/fifo/Makefile.srcs21
-rw-r--r--fpga/usrp3/lib/fifo/axi_demux4.v77
-rw-r--r--fpga/usrp3/lib/fifo/axi_demux8.v60
-rw-r--r--fpga/usrp3/lib/fifo/axi_fifo.v169
-rw-r--r--fpga/usrp3/lib/fifo/axi_fifo32_to_fifo64.v38
-rw-r--r--fpga/usrp3/lib/fifo/axi_fifo64_to_fifo32.v31
-rw-r--r--fpga/usrp3/lib/fifo/axi_fifo_2clk.v88
-rw-r--r--fpga/usrp3/lib/fifo/axi_fifo_32_64_tb.v114
-rw-r--r--fpga/usrp3/lib/fifo/axi_fifo_short.v110
-rw-r--r--fpga/usrp3/lib/fifo/axi_fifo_tb.v211
-rw-r--r--fpga/usrp3/lib/fifo/axi_filter_mux4.v154
-rw-r--r--fpga/usrp3/lib/fifo/axi_loopback.v71
-rw-r--r--fpga/usrp3/lib/fifo/axi_mux4.v112
-rw-r--r--fpga/usrp3/lib/fifo/axi_mux8.v56
-rw-r--r--fpga/usrp3/lib/fifo/axi_packet_gate.v78
-rw-r--r--fpga/usrp3/lib/fifo/axi_packet_gate_tb.v106
-rw-r--r--fpga/usrp3/lib/fifo/monitor_axi_fifo.v123
-rw-r--r--fpga/usrp3/lib/fifo/shortfifo.v92
18 files changed, 0 insertions, 1711 deletions
diff --git a/fpga/usrp3/lib/fifo/Makefile.srcs b/fpga/usrp3/lib/fifo/Makefile.srcs
deleted file mode 100644
index 389766605..000000000
--- a/fpga/usrp3/lib/fifo/Makefile.srcs
+++ /dev/null
@@ -1,21 +0,0 @@
-#
-# Copyright 2012-2013 Ettus Research LLC
-#
-
-##################################################
-# FIFO Sources
-##################################################
-FIFO_SRCS = $(abspath $(addprefix $(BASE_DIR)/../lib/fifo/, \
-axi_mux4.v \
-axi_mux8.v \
-axi_demux4.v \
-axi_demux8.v \
-axi_fifo_short.v \
-axi_packet_gate.v \
-axi_fifo.v \
-axi_fifo64_to_fifo32.v \
-axi_fifo32_to_fifo64.v \
-axi_fifo_2clk.v \
-axi_loopback.v \
-axi_filter_mux4.v \
-))
diff --git a/fpga/usrp3/lib/fifo/axi_demux4.v b/fpga/usrp3/lib/fifo/axi_demux4.v
deleted file mode 100644
index c613b064d..000000000
--- a/fpga/usrp3/lib/fifo/axi_demux4.v
+++ /dev/null
@@ -1,77 +0,0 @@
-
-// Copyright 2012 Ettus Research LLC
-// axi_demux -- takes one AXI stream, sends to one of 4 output channels
-// Choice of output channel is by external logic based on first line of packet ("header" port)
-// If compressed vita data, this line contains vita header and streamid.
-
-module axi_demux4
- #(parameter ACTIVE_CHAN = 4'b1111, // ACTIVE_CHAN is a map of connected outputs
- parameter WIDTH = 64,
- parameter BUFFER=0)
- (input clk, input reset, input clear,
- output [WIDTH-1:0] header, input [1:0] dest,
- input [WIDTH-1:0] i_tdata, input i_tlast, input i_tvalid, output i_tready,
- output [WIDTH-1:0] o0_tdata, output o0_tlast, output o0_tvalid, input o0_tready,
- output [WIDTH-1:0] o1_tdata, output o1_tlast, output o1_tvalid, input o1_tready,
- output [WIDTH-1:0] o2_tdata, output o2_tlast, output o2_tvalid, input o2_tready,
- output [WIDTH-1:0] o3_tdata, output o3_tlast, output o3_tvalid, input o3_tready);
-
- wire [WIDTH-1:0] i_tdata_int;
- wire i_tlast_int, i_tvalid_int, i_tready_int;
-
- generate
- if(BUFFER == 0)
- begin
- assign i_tdata_int = i_tdata;
- assign i_tlast_int = i_tlast;
- assign i_tvalid_int = i_tvalid;
- assign i_tready = i_tready_int;
- end
- else
- axi_fifo_short #(.WIDTH(WIDTH+1)) axi_fifo_short
- (.clk(clk), .reset(reset), .clear(clear),
- .i_tdata({i_tlast,i_tdata}), .i_tvalid(i_tvalid), .i_tready(i_tready),
- .o_tdata({i_tlast_int,i_tdata_int}), .o_tvalid(i_tvalid_int), .o_tready(i_tready_int),
- .space(), .occupied());
- endgenerate
-
- reg [3:0] dm_state;
- localparam DM_IDLE = 4'b0000;
- localparam DM_0 = 4'b0001;
- localparam DM_1 = 4'b0010;
- localparam DM_2 = 4'b0100;
- localparam DM_3 = 4'b1000;
-
- assign header = i_tdata_int;
-
- always @(posedge clk)
- if(reset | clear)
- dm_state <= DM_IDLE;
- else
- case (dm_state)
- DM_IDLE :
- if(i_tvalid_int)
- case(dest)
- 2'b00 : dm_state <= DM_0;
- 2'b01 : dm_state <= DM_1;
- 2'b10 : dm_state <= DM_2;
- 2'b11 : dm_state <= DM_3;
- endcase // case (i_tdata[1:0])
-
- DM_0, DM_1, DM_2, DM_3 :
- if(i_tvalid_int & i_tready_int & i_tlast_int)
- dm_state <= DM_IDLE;
-
- default :
- dm_state <= DM_IDLE;
- endcase // case (dm_state)
-
- assign {o3_tvalid, o2_tvalid, o1_tvalid, o0_tvalid} = dm_state & {4{i_tvalid_int}};
- assign i_tready_int = |(dm_state & ({o3_tready, o2_tready, o1_tready, o0_tready} | ~ACTIVE_CHAN));
-
- assign {o0_tlast, o0_tdata} = {i_tlast_int, i_tdata_int};
- assign {o1_tlast, o1_tdata} = {i_tlast_int, i_tdata_int};
- assign {o2_tlast, o2_tdata} = {i_tlast_int, i_tdata_int};
- assign {o3_tlast, o3_tdata} = {i_tlast_int, i_tdata_int};
-
-endmodule // axi_demux4
diff --git a/fpga/usrp3/lib/fifo/axi_demux8.v b/fpga/usrp3/lib/fifo/axi_demux8.v
deleted file mode 100644
index 9aa51674d..000000000
--- a/fpga/usrp3/lib/fifo/axi_demux8.v
+++ /dev/null
@@ -1,60 +0,0 @@
-
-// Copyright 2012 Ettus Research LLC
-// axi_demux -- takes one AXI stream, sends to one of 8 output channels
-// Choice of output channel is by external logic based on first line of packet ("header" port)
-// If compressed vita data, this line contains vita header and streamid.
-
-module axi_demux8 #(
- parameter ACTIVE_CHAN = 8'b11111111, // ACTIVE_CHAN is a map of connected outputs
- parameter WIDTH = 64,
- parameter BUFFER=0
-) (
- input clk, input reset, input clear,
- output [WIDTH-1:0] header, input [2:0] dest,
- input [WIDTH-1:0] i_tdata, input i_tlast, input i_tvalid, output i_tready,
- output [WIDTH-1:0] o0_tdata, output o0_tlast, output o0_tvalid, input o0_tready,
- output [WIDTH-1:0] o1_tdata, output o1_tlast, output o1_tvalid, input o1_tready,
- output [WIDTH-1:0] o2_tdata, output o2_tlast, output o2_tvalid, input o2_tready,
- output [WIDTH-1:0] o3_tdata, output o3_tlast, output o3_tvalid, input o3_tready,
- output [WIDTH-1:0] o4_tdata, output o4_tlast, output o4_tvalid, input o4_tready,
- output [WIDTH-1:0] o5_tdata, output o5_tlast, output o5_tvalid, input o5_tready,
- output [WIDTH-1:0] o6_tdata, output o6_tlast, output o6_tvalid, input o6_tready,
- output [WIDTH-1:0] o7_tdata, output o7_tlast, output o7_tvalid, input o7_tready
-);
-
- wire [WIDTH-1:0] i_tdata_int0, i_tdata_int1;
- wire i_tlast_int0, i_tlast_int1;
- wire i_tvalid_int0, i_tvalid_int1;
- wire i_tready_int0, i_tready_int1;
-
- axi_demux4 #(.ACTIVE_CHAN({2'b00, (|(ACTIVE_CHAN[7:4])), (|(ACTIVE_CHAN[3:0]))}), .WIDTH(WIDTH), .BUFFER(BUFFER)) demux2 (
- .clk(clk), .reset(reset), .clear(clear),
- .header(header), .dest({1'b0, dest[2]}),
- .i_tdata(i_tdata), .i_tlast(i_tlast), .i_tvalid(i_tvalid), .i_tready(i_tready),
- .o0_tdata(i_tdata_int0), .o0_tlast(i_tlast_int0), .o0_tvalid(i_tvalid_int0), .o0_tready(i_tready_int0),
- .o1_tdata(i_tdata_int1), .o1_tlast(i_tlast_int1), .o1_tvalid(i_tvalid_int1), .o1_tready(i_tready_int1),
- .o2_tdata(), .o2_tlast(), .o2_tvalid(), .o2_tready(1'b0),
- .o3_tdata(), .o3_tlast(), .o3_tvalid(), .o3_tready(1'b0)
- );
-
- axi_demux4 #(.ACTIVE_CHAN(ACTIVE_CHAN[3:0]), .WIDTH(WIDTH), .BUFFER(0)) demux4_int0 (
- .clk(clk), .reset(reset), .clear(clear),
- .header(), .dest(dest[1:0]),
- .i_tdata(i_tdata_int0), .i_tlast(i_tlast_int0), .i_tvalid(i_tvalid_int0), .i_tready(i_tready_int0),
- .o0_tdata(o0_tdata), .o0_tlast(o0_tlast), .o0_tvalid(o0_tvalid), .o0_tready(o0_tready),
- .o1_tdata(o1_tdata), .o1_tlast(o1_tlast), .o1_tvalid(o1_tvalid), .o1_tready(o1_tready),
- .o2_tdata(o2_tdata), .o2_tlast(o2_tlast), .o2_tvalid(o2_tvalid), .o2_tready(o2_tready),
- .o3_tdata(o3_tdata), .o3_tlast(o3_tlast), .o3_tvalid(o3_tvalid), .o3_tready(o3_tready)
- );
-
- axi_demux4 #(.ACTIVE_CHAN(ACTIVE_CHAN[7:4]), .WIDTH(WIDTH), .BUFFER(0)) demux4_int1 (
- .clk(clk), .reset(reset), .clear(clear),
- .header(), .dest(dest[1:0]),
- .i_tdata(i_tdata_int1), .i_tlast(i_tlast_int1), .i_tvalid(i_tvalid_int1), .i_tready(i_tready_int1),
- .o0_tdata(o4_tdata), .o0_tlast(o4_tlast), .o0_tvalid(o4_tvalid), .o0_tready(o4_tready),
- .o1_tdata(o5_tdata), .o1_tlast(o5_tlast), .o1_tvalid(o5_tvalid), .o1_tready(o5_tready),
- .o2_tdata(o6_tdata), .o2_tlast(o6_tlast), .o2_tvalid(o6_tvalid), .o2_tready(o6_tready),
- .o3_tdata(o7_tdata), .o3_tlast(o7_tlast), .o3_tvalid(o7_tvalid), .o3_tready(o7_tready)
- );
-
-endmodule // axi_demux4
diff --git a/fpga/usrp3/lib/fifo/axi_fifo.v b/fpga/usrp3/lib/fifo/axi_fifo.v
deleted file mode 100644
index 2f42fc181..000000000
--- a/fpga/usrp3/lib/fifo/axi_fifo.v
+++ /dev/null
@@ -1,169 +0,0 @@
-//
-// Copyright 2012-2013 Ettus Research LLC
-//
-
-
-
-// Block RAM AXI fifo
-
-// Special case SIZE <= 5 uses a short fifo
-
-module axi_fifo
- #(parameter WIDTH=32, SIZE=9)
- (input clk, input reset, input clear,
- input [WIDTH-1:0] i_tdata,
- input i_tvalid,
- output i_tready,
- output [WIDTH-1:0] o_tdata,
- output o_tvalid,
- input o_tready,
-
- output reg [15:0] space,
- output reg [15:0] occupied);
-
- generate
- if(SIZE<=5) begin
- wire [5:0] space_short, occupied_short;
- axi_fifo_short #(.WIDTH(WIDTH)) fifo_short
- (
- .clk(clk), .reset(reset), .clear(clear),
- .i_tdata(i_tdata), .i_tvalid(i_tvalid), .i_tready(i_tready),
- .o_tdata(o_tdata), .o_tvalid(o_tvalid), .o_tready(o_tready),
- .space(space_short), .occupied(occupied_short)
- );
- always @* space <= {10'b0, space_short};
- always @* occupied <= {10'b0, occupied_short};
- end
- else begin
-
- wire write = i_tvalid & i_tready;
- wire read = o_tvalid & o_tready;
- wire full, empty;
-
- assign i_tready = ~full;
- assign o_tvalid = ~empty;
-
- // Read side states
- localparam EMPTY = 0;
- localparam PRE_READ = 1;
- localparam READING = 2;
-
- reg [SIZE-1:0] wr_addr, rd_addr;
- reg [1:0] read_state;
-
- reg empty_reg, full_reg;
- always @(posedge clk)
- if(reset)
- wr_addr <= 0;
- else if(clear)
- wr_addr <= 0;
- else if(write)
- wr_addr <= wr_addr + 1;
-
- ram_2port #(.DWIDTH(WIDTH),.AWIDTH(SIZE))
- ram (.clka(clk),
- .ena(1'b1),
- .wea(write),
- .addra(wr_addr),
- .dia(i_tdata),
- .doa(),
-
- .clkb(clk),
- .enb((read_state==PRE_READ)|read),
- .web(1'b0),
- .addrb(rd_addr),
- .dib({WIDTH{1'b1}}),
- .dob(o_tdata));
-
- always @(posedge clk)
- if(reset)
- begin
- read_state <= EMPTY;
- rd_addr <= 0;
- empty_reg <= 1;
- end
- else
- if(clear)
- begin
- read_state <= EMPTY;
- rd_addr <= 0;
- empty_reg <= 1;
- end
- else
- case(read_state)
- EMPTY :
- if(write)
- begin
- //rd_addr <= wr_addr;
- read_state <= PRE_READ;
- end
- PRE_READ :
- begin
- read_state <= READING;
- empty_reg <= 0;
- rd_addr <= rd_addr + 1;
- end
-
- READING :
- if(read)
- if(rd_addr == wr_addr)
- begin
- empty_reg <= 1;
- if(write)
- read_state <= PRE_READ;
- else
- read_state <= EMPTY;
- end
- else
- rd_addr <= rd_addr + 1;
- endcase // case(read_state)
-
- wire [SIZE-1:0] dont_write_past_me = rd_addr - 2;
- wire becoming_full = wr_addr == dont_write_past_me;
-
- always @(posedge clk)
- if(reset)
- full_reg <= 0;
- else if(clear)
- full_reg <= 0;
- else if(read & ~write)
- full_reg <= 0;
- //else if(write & ~read & (wr_addr == (rd_addr-3)))
- else if(write & ~read & becoming_full)
- full_reg <= 1;
-
- //assign empty = (read_state != READING);
- assign empty = empty_reg;
-
- // assign full = ((rd_addr - 1) == wr_addr);
- assign full = full_reg;
-
- //////////////////////////////////////////////
- // space and occupied are for diagnostics only
- // not guaranteed exact
-
- localparam NUMLINES = (1<<SIZE);
- always @(posedge clk)
- if(reset)
- space <= NUMLINES;
- else if(clear)
- space <= NUMLINES;
- else if(read & ~write)
- space <= space + 16'b1;
- else if(write & ~read)
- space <= space - 16'b1;
-
- always @(posedge clk)
- if(reset)
- occupied <= 16'b0;
- else if(clear)
- occupied <= 16'b0;
- else if(read & ~write)
- occupied <= occupied - 16'b1;
- else if(write & ~read)
- occupied <= occupied + 16'b1;
-
- end
- endgenerate
-
-endmodule // fifo_long
diff --git a/fpga/usrp3/lib/fifo/axi_fifo32_to_fifo64.v b/fpga/usrp3/lib/fifo/axi_fifo32_to_fifo64.v
deleted file mode 100644
index 1df69d449..000000000
--- a/fpga/usrp3/lib/fifo/axi_fifo32_to_fifo64.v
+++ /dev/null
@@ -1,38 +0,0 @@
-
-module axi_fifo32_to_fifo64
- (input clk, input reset, input clear,
- input [31:0] i_tdata, input [1:0] i_tuser, input i_tlast, input i_tvalid, output i_tready,
- output [63:0] o_tdata, output [2:0] o_tuser, output o_tlast, output o_tvalid, input o_tready
- );
-
- reg [31:0] holding;
-
- reg state;
-
- always @(posedge clk)
- if(reset | clear)
- state <= 0;
- else
- if(i_tvalid & i_tready)
- case(state)
- 0 : if(~i_tlast) state <= 1'b1;
- 1 : state <= 1'b0;
- default : state <= 1'b0;
- endcase // case (state)
-
- always @(posedge clk)
- if(i_tvalid & i_tready)
- holding <= i_tdata;
-
- assign i_tready = (state == 0 && !i_tlast)? 1'b1 : o_tready;
- assign o_tvalid = (state == 0 && !i_tlast)? 1'b0 : i_tvalid;
-
- assign o_tdata = (state == 0) ? {i_tdata, 32'h0} : { holding, i_tdata };
- assign o_tlast = i_tlast;
-
- wire [2:0] occ_in = (i_tuser == 0) ? 3'd4 : {1'b0, i_tuser};
- wire [2:0] occ_out = (state == 0) ? occ_in : (occ_in + 3'd4);
-
- assign o_tuser = ~o_tlast ? 3'd0 : occ_out;
-
-endmodule // axi_fifo32_to_fifo64
diff --git a/fpga/usrp3/lib/fifo/axi_fifo64_to_fifo32.v b/fpga/usrp3/lib/fifo/axi_fifo64_to_fifo32.v
deleted file mode 100644
index 46b021600..000000000
--- a/fpga/usrp3/lib/fifo/axi_fifo64_to_fifo32.v
+++ /dev/null
@@ -1,31 +0,0 @@
-
-module axi_fifo64_to_fifo32
- (input clk, input reset, input clear,
- input [63:0] i_tdata, input [2:0] i_tuser, input i_tlast, input i_tvalid, output i_tready,
- output [31:0] o_tdata, output [1:0] o_tuser, output o_tlast, output o_tvalid, input o_tready
- );
-
- wire short_last = i_tlast & ((i_tuser == 3'd1) | (i_tuser == 3'd2) | (i_tuser == 3'd3) | (i_tuser == 3'd4));
-
- reg state;
- always @(posedge clk)
- if(reset | clear)
- state <= 1'b0;
- else
- if(i_tvalid & o_tready)
- case(state)
- 1'b0 :
- if(~short_last)
- state <= 1'b1;
- 1'b1 :
- state <= 1'b0;
- endcase // case (state)
-
- assign o_tdata = (state == 0) ? i_tdata[63:32] : i_tdata[31:0];
- assign o_tuser = o_tlast ? i_tuser[1:0] : 2'd0;
- assign o_tlast = i_tlast & ((state == 1'b1) | short_last);
-
- assign o_tvalid = i_tvalid;
- assign i_tready = o_tready & ((state == 1'b1) | short_last);
-
-endmodule // axi_fifo64_to_fifo32
diff --git a/fpga/usrp3/lib/fifo/axi_fifo_2clk.v b/fpga/usrp3/lib/fifo/axi_fifo_2clk.v
deleted file mode 100644
index f9f7beb88..000000000
--- a/fpga/usrp3/lib/fifo/axi_fifo_2clk.v
+++ /dev/null
@@ -1,88 +0,0 @@
-//
-// Copyright 2013 Ettus Research LLC
-//
-
-
-// Special case SIZE <= 5 uses a short fifo
-
-module axi_fifo_2clk
- #(parameter WIDTH=69, SIZE=9)
- (input reset,
- input i_aclk,
- input [WIDTH-1:0] i_tdata,
- input i_tvalid,
- output i_tready,
- input o_aclk,
- output [WIDTH-1:0] o_tdata,
- output o_tvalid,
- input o_tready);
-
- wire write, read, empty, full;
- assign i_tready = ~full;
- assign write = i_tvalid & i_tready;
-
- wire [71:0] tdata_int;
- wire tvalid_int, tready_int;
- assign tvalid_int = ~empty;
- assign read = tvalid_int & tready_int;
-
- wire [71:0] wr_data;
- assign wr_data[WIDTH-1:0] = i_tdata;
- wire [71:0] rd_data;
- assign tdata_int = rd_data[WIDTH-1:0];
-
- generate
- if(WIDTH<72) begin
- assign wr_data[71:WIDTH] = 0;
- end
- endgenerate
-
- generate
- if(SIZE<=5)
- fifo_short_2clk fifo_short_2clk
- (.rst(reset),
- .wr_clk(i_aclk),
- .din(wr_data), // input [71 : 0] din
- .wr_en(write), // input wr_en
- .full(full), // output full
- .wr_data_count(), // output [9 : 0] wr_data_count
-
- .rd_clk(o_aclk), // input rd_clk
- .dout(rd_data), // output [71 : 0] dout
- .rd_en(read), // input rd_en
- .empty(empty), // output empty
- .rd_data_count() // output [9 : 0] rd_data_count
- );
- else
- fifo_4k_2clk fifo_4k_2clk
- (.rst(reset),
- .wr_clk(i_aclk),
- .din(wr_data), // input [71 : 0] din
- .wr_en(write), // input wr_en
- .full(full), // output full
- .wr_data_count(), // output [9 : 0] wr_data_count
-
- .rd_clk(o_aclk), // input rd_clk
- .dout(rd_data), // output [71 : 0] dout
- .rd_en(read), // input rd_en
- .empty(empty), // output empty
- .rd_data_count() // output [9 : 0] rd_data_count
- );
- endgenerate
-
- generate
- if(SIZE>9)
- axi_fifo #(.WIDTH(WIDTH), .SIZE(SIZE)) fifo_1clk
- (.clk(o_aclk), .reset(reset), .clear(1'b0),
- .i_tdata(tdata_int), .i_tvalid(tvalid_int), .i_tready(tready_int),
- .o_tdata(o_tdata), .o_tvalid(o_tvalid), .o_tready(o_tready),
- .space(), .occupied());
- else
- begin
- assign o_tdata = tdata_int;
- assign o_tvalid = tvalid_int;
- assign tready_int = o_tready;
- end
- endgenerate
-
-endmodule // axi_fifo_2clk
diff --git a/fpga/usrp3/lib/fifo/axi_fifo_32_64_tb.v b/fpga/usrp3/lib/fifo/axi_fifo_32_64_tb.v
deleted file mode 100644
index 9b104f1d9..000000000
--- a/fpga/usrp3/lib/fifo/axi_fifo_32_64_tb.v
+++ /dev/null
@@ -1,114 +0,0 @@
-`timescale 1ns/1ps
-
-module axi_fifo_32_64_tb();
-
- reg clk = 0;
- reg reset = 1;
-
- always #10 clk = ~clk;
-
- initial $dumpfile("axi_fifo_32_64_tb.vcd");
- initial $dumpvars(0,axi_fifo_32_64_tb);
-
- task send_packet;
- input [63:0] data_start;
- input [2:0] user;
- input [31:0] len;
-
- begin
- @(posedge clk);
- {i_tuser, i_tlast, i_tdata} <= { 3'd0, 1'b0, data_start };
- repeat(len-1)
- begin
- i_tvalid <= 1;
- @(posedge clk);
- i_tdata <= i_tdata + 64'h0000_0002_0000_0002;
- end
- i_tuser <= user;
- i_tlast <= 1;
- @(posedge clk);
- i_tvalid <= 1'b0;
- @(posedge clk);
- end
- endtask // send_packet
-
- initial
- begin
- #1000 reset = 0;
- #200000;
- $finish;
- end
-
- reg [63:0] i_tdata;
- reg [2:0] i_tuser;
- reg i_tlast;
- reg i_tvalid;
- wire i_tready;
-
- wire [63:0] i_tdata_int;
- wire [2:0] i_tuser_int;
- wire i_tlast_int, i_tvalid_int, i_tready_int;
-
- wire [63:0] o_tdata;
- wire [31:0] o_tdata_int, o_tdata_int2;
- wire [2:0] o_tuser;
- wire [1:0] o_tuser_int, o_tuser_int2;
- wire o_tlast, o_tlast_int, o_tvalid, o_tvalid_int, o_tready, o_tready_int;
- wire o_tlast_int2, o_tvalid_int2, o_tready_int2;
-
- localparam RPT_COUNT = 16;
-
- initial
- begin
- i_tvalid <= 0;
-
- while(reset)
- @(posedge clk);
- @(posedge clk);
-
- send_packet(64'hA0000000_A0000001, 3'd7, 4);
- @(posedge clk);
- end // initial begin
-
- axi_fifo #(.WIDTH(68), .SIZE(10)) fifo
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata({i_tlast,i_tuser,i_tdata}), .i_tvalid(i_tvalid), .i_tready(i_tready),
- .o_tdata({i_tlast_int,i_tuser_int,i_tdata_int}), .o_tvalid(i_tvalid_int), .o_tready(i_tready_int));
-
- axi_fifo64_to_fifo32 dut
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata(i_tdata_int), .i_tuser(i_tuser_int), .i_tlast(i_tlast_int), .i_tvalid(i_tvalid_int), .i_tready(i_tready_int),
- .o_tdata(o_tdata_int), .o_tuser(o_tuser_int), .o_tlast(o_tlast_int), .o_tvalid(o_tvalid_int), .o_tready(o_tready_int));
-
- /*
- axi_fifo #(.WIDTH(35), .SIZE(10)) fifo_middle
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata({o_tlast_int,o_tuser_int,o_tdata_int}), .i_tvalid(o_tvalid_int), .i_tready(o_tready_int),
- .o_tdata({o_tlast_int2,o_tuser_int2,o_tdata_int2}), .o_tvalid(o_tvalid_int2), .o_tready(o_tready_int2));
-*/
- assign o_tdata_int2 = o_tdata_int;
- assign o_tlast_int2 = o_tlast_int;
- assign o_tuser_int2 = o_tuser_int;
- assign o_tvalid_int2 = o_tvalid_int;
- assign o_tready_int = o_tready_int2;
-
- axi_fifo32_to_fifo64 dut2
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata(o_tdata_int2), .i_tuser(o_tuser_int2), .i_tlast(o_tlast_int2), .i_tvalid(o_tvalid_int2), .i_tready(o_tready_int2),
- .o_tdata(o_tdata), .o_tuser(o_tuser), .o_tlast(o_tlast), .o_tvalid(o_tvalid), .o_tready(o_tready));
-
- assign o_tready = 1'b1;
-
- always @(posedge clk)
- if(i_tvalid & i_tready)
- $display("IN: TUSER %x\tTLAST %x\tTDATA %x", i_tuser, i_tlast, i_tdata);
-
- always @(posedge clk)
- if(o_tvalid_int & o_tready_int)
- $display("\t\t\t\t\t\tMIDDLE: TUSER %x\tTLAST %x\tTDATA %x", o_tuser_int, o_tlast_int, o_tdata_int);
-
- always @(posedge clk)
- if(o_tvalid & o_tready)
- $display("\t\t\t\t\t\t\t\t\t\t\tOUT: TUSER %x\tTLAST %x\tTDATA %x", o_tuser, o_tlast, o_tdata);
-
-endmodule // axi_fifo_32_64_tb
diff --git a/fpga/usrp3/lib/fifo/axi_fifo_short.v b/fpga/usrp3/lib/fifo/axi_fifo_short.v
deleted file mode 100644
index e13993199..000000000
--- a/fpga/usrp3/lib/fifo/axi_fifo_short.v
+++ /dev/null
@@ -1,110 +0,0 @@
-//
-// Copyright 2012 Ettus Research LLC
-//
-
-
-//
-// 32 word FIFO with AXI4-STREAM interface.
-//
-// NOTE: This module uses the SRLC32E primitive explicitly and as such
-// can only be used with Xilinx technology of the VIRTEX-6/SPARTAN-6/SIERIES-7 or newer.
-//
-
-module axi_fifo_short
- #(parameter WIDTH=32)
- (
- input clk,
- input reset,
- input clear,
- input [WIDTH-1:0] i_tdata,
- input i_tvalid,
- output i_tready,
- output [WIDTH-1:0] o_tdata,
- output o_tvalid,
- input o_tready,
-
- output reg [5:0] space,
- output reg [5:0] occupied
- );
-
- reg full, empty;
- wire write = i_tvalid & i_tready;
- wire read = o_tready & o_tvalid;
-
- assign i_tready = ~full;
- assign o_tvalid = ~empty;
-
- reg [4:0] a;
- genvar i;
-
- generate
- for (i=0;i<WIDTH;i=i+1)
- begin : gen_srlc32e
- SRLC32E
- srlc32e(.Q(o_tdata[i]), .Q31(),
- .A(a), //.A0(a[0]),.A1(a[1]),.A2(a[2]),.A3(a[3]),.A4(a[4]),
- .CE(write),.CLK(clk),.D(i_tdata[i]));
- end
- endgenerate
-
- always @(posedge clk)
- if(reset)
- begin
- a <= 0;
- empty <= 1;
- full <= 0;
- end
- else if(clear)
- begin
- a <= 0;
- empty <= 1;
- full<= 0;
- end
- else if(read & ~write)
- begin
- full <= 0;
- if(a==0)
- empty <= 1;
- else
- a <= a - 1;
- end
- else if(write & ~read)
- begin
- empty <= 0;
- if(~empty)
- a <= a + 1;
- if(a == 30)
- full <= 1;
- end
-
- // NOTE will fail if you write into a full fifo or read from an empty one
-
- //////////////////////////////////////////////////////////////
- // space and occupied are used for diagnostics, not
- // guaranteed correct
-
- //assign space = full ? 0 : empty ? 16 : 15-a;
- //assign occupied = empty ? 0 : full ? 16 : a+1;
-
- always @(posedge clk)
- if(reset)
- space <= 6'd32;
- else if(clear)
- space <= 6'd32;
- else if(read & ~write)
- space <= space + 6'd1;
- else if(write & ~read)
- space <= space - 6'd1;
-
- always @(posedge clk)
- if(reset)
- occupied <= 6'd0;
- else if(clear)
- occupied <= 6'd0;
- else if(read & ~write)
- occupied <= occupied - 6'd1;
- else if(write & ~read)
- occupied <= occupied + 6'd1;
-
-endmodule // axi_fifo_short
-
diff --git a/fpga/usrp3/lib/fifo/axi_fifo_tb.v b/fpga/usrp3/lib/fifo/axi_fifo_tb.v
deleted file mode 100644
index cb0e26ac5..000000000
--- a/fpga/usrp3/lib/fifo/axi_fifo_tb.v
+++ /dev/null
@@ -1,211 +0,0 @@
-//
-// Copyright 2012-2013 Ettus Research LLC
-//
-
-
-module axi_fifo_tb();
-
- reg clk, reset;
- reg read_flag, write_flag;
-
- reg error;
- reg [7:0] i_tdata, o_tdata_ref;
- wire [7:0] o_tdata;
- reg i_tvalid, o_tready;
- wire o_tvalid, i_tready;
- wire [15:0] space, occupied;
-
- always
- #100 clk = ~clk;
-
- initial clk = 0;
-
-
- axi_fifo
- #(
- .WIDTH(8),
- .SIZE(8)
- )
- dut
- (.clk(clk),
- .reset(reset),
- .clear(1'b0),
- .i_tdata(i_tdata),
- .i_tvalid(i_tvalid),
- .i_tready(i_tready),
- .o_tdata(o_tdata),
- .o_tvalid(o_tvalid),
- .o_tready(o_tready),
- .space(space),
- .occupied(occupied)
- );
-
-
- task write;
- begin
- write_flag <= 1;
- i_tvalid <= 1'b1;
- #1;
- while (i_tready != 1'b1)
- @(posedge clk);
- #1;
- @(posedge clk);
- write_flag <= 0;
- i_tvalid <= 1'b0;
- i_tdata <= i_tdata + 8'h1;
- end
- endtask // write
-
- task read;
- begin
- read_flag <= 1;
- o_tready <= 1'b1;
- #1;
- while (o_tvalid != 1'b1)
- @(posedge clk);
- #1;
- @(posedge clk);
- read_flag <= 0;
- o_tready <= 1'b0;
- if (o_tdata_ref != o_tdata) begin
- $display("ERROR: Expected %d, got %d, at time %d",o_tdata_ref,o_tdata,$time);
- error <= 1'b1;
- end else
- error <= 1'b0;
- o_tdata_ref = o_tdata_ref + 8'h1;
- end
- endtask // read
-
- initial
- begin
- reset <= 1'b0;
- error <= 1'b0;
- i_tdata <= 8'b00;
- o_tdata_ref <= 8'b00;
- i_tvalid <= 1'b0;
- o_tready <= 1'b0;
- read_flag <= 0;
- write_flag <= 0;
-
- repeat(10) @(posedge clk);
- reset <= 1'b1;
- repeat(10) @(posedge clk);
- reset <= 1'b0;
- @(posedge clk);
- @(negedge clk);
-
- // FIFO Should be empty now, check avail space
- if (space != 16'd256)
- begin $display("ERROR: FIFO is empty, space should read 256 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd0)
- begin $display("ERROR: FIFO is empty, occupied should read 0 not %d at time %d",occupied,$time); error <= 1; end
- if (o_tvalid == 1'b1)
- begin $display("ERROR: FIFO is empty, o_tvalid should be 0 at time %d",$time); error <= 1; end
- @(posedge clk);
- // Push 1 item onto FIFO, check fullness updates accordingly
- write();
- @(posedge clk);
- @(negedge clk);
- if (space != 16'd255)
- begin $display("ERROR: FIFO space should read 255 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd1)
- begin $display("ERROR: FIFO occupied should read 1 not %d at time %d",occupied,$time); error <= 1; end
- if (o_tvalid == 1'b0)
- begin $display("ERROR: FIFO is not empty, o_tvalid should be 1 at time %d",$time); error <= 1; end
- // Pop FIFO once, check it goes back empty OK.
- @(posedge clk);
- read();
- @(posedge clk);
- @(negedge clk);
- if (space != 16'd256)
- begin $display("ERROR: FIFO is empty, space should read 256 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd0)
- begin $display("ERROR: FIFO is empty, occupied should read 0 not %d at time %d",occupied,$time); error <= 1; end
- if (o_tvalid == 1'b1)
- begin $display("ERROR: FIFO is empty, o_tvalid should be 0 at time %d",$time); error <= 1; end
- // Push FIFO 255 times and see if it goes full incorrectly
- repeat(255) begin
- @(posedge clk);
- write();
- end
- @(posedge clk);
- @(negedge clk);
- if (space != 16'd1)
- begin $display("ERROR: FIFO is nearly full, space should read 1 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd255)
- begin $display("ERROR: FIFO is nearly full, occupied should read 255 not %d at time %d",occupied,$time); error <= 1; end
- if (o_tvalid == 1'b0)
- begin $display("ERROR: FIFO is nearly full, o_tvalid should be 1 at time %d",$time); error <= 1; end
- if (i_tready == 1'b0)
- begin $display("ERROR: FIFO is nearly full, i_tready should be 1 at time %d",$time); error <= 1; end
- // Push FIFO one more time, now it should be full
- @(posedge clk);
- write();
- @(posedge clk);
- @(negedge clk);
- if (space != 16'd0)
- begin $display("ERROR: FIFO is full, space should read 0 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd256)
- begin $display("ERROR: FIFO is full, occupied should read 256 not %d at time %d",occupied,$time); error <= 1; end
- if (o_tvalid == 1'b0)
- begin $display("ERROR: FIFO is full, o_tvalid should be 1 at time %d",$time); error <= 1; end
- if (i_tready == 1'b1)
- begin $display("ERROR: FIFO is full, i_tready should be 0 at time %d",$time); error <= 1; end
- // POP FIFO once, check it went nonfull.
- @(posedge clk);
- read();
- @(posedge clk);
- @(negedge clk);
- if (space != 16'd1)
- begin $display("ERROR: FIFO is nearly full, space should read 1 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd255)
- begin $display("ERROR: FIFO is nearly full, occupied should read 255 not %d at time %d",occupied,$time); error <= 1; end
- if (o_tvalid == 1'b0)
- begin $display("ERROR: FIFO is nearly full, o_tvalid should be 1 at time %d",$time); error <= 1; end
- if (i_tready == 1'b0)
- begin $display("ERROR: FIFO is nearly full, i_tready should be 1 at time %d",$time); error <= 1; end
- // Take FIFO to empty state
- repeat(255) begin
- @(posedge clk);
- read();
- end
- @(posedge clk);
- @(negedge clk);
- if (space != 16'd256)
- begin $display("ERROR: FIFO is empty, space should read 256 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd0)
- begin $display("ERROR: FIFO is empty, occupied should read 0 not %d at time %d",occupied,$time); error <= 1; end
- if (o_tvalid == 1'b1)
- begin $display("ERROR: FIFO is empty, o_tvalid should be 0 at time %d",$time); error <= 1; end
- // Push 1 item onto FIFO
- @(posedge clk);
- write();
- @(posedge clk);
- // Now write twice as fast as we read, and write 256 times, which should leave, 129 elements in FIFO.
- fork
- repeat(256) begin
- write();
- @(posedge clk);
- end
- repeat(128) begin
- read();
- @(posedge clk);
- @(posedge clk);
- end
- join
- @(posedge clk);
- if (space != 16'd127)
- begin $display("ERROR: FIFO space should read 127 not %d at time %d",space,$time); error <= 1; end
- if (occupied != 16'd129)
- begin $display("ERROR: FIFO occupied should read 129 not %d at time %d",occupied,$time); error <= 1; end
-
-
-
- //
- // END
- //
- repeat(10) @(posedge clk);
- $finish;
- end // initial begin
-
-endmodule // axi_fifo_tb
diff --git a/fpga/usrp3/lib/fifo/axi_filter_mux4.v b/fpga/usrp3/lib/fifo/axi_filter_mux4.v
deleted file mode 100644
index cdc314e5f..000000000
--- a/fpga/usrp3/lib/fifo/axi_filter_mux4.v
+++ /dev/null
@@ -1,154 +0,0 @@
-// Copyright 2014 Ettus Research LLC
-// axi_filter_mux -- takes 4 64-bit AXI stream of CHDR data, merges them to 1 output channel
-// Round-robin if PRIO=0, priority if PRIO=1 (lower number ports get priority)
-// Bubble cycles are inserted after each packet in PRIO mode, or on wraparound in Round Robin mode.
-// Filter forces specific destination SID to pass per port, else dump data to /dev/null
-
-module axi_filter_mux4
- #(parameter PRIO=0,
- parameter WIDTH=64,
- parameter BUFFER=0,
- parameter FILTER0 =0,
- parameter FILTER1 =0,
- parameter FILTER2 =0,
- parameter FILTER3 =0
- )
- (input clk, input reset, input clear,
- input [WIDTH-1:0] i0_tdata, input i0_tlast, input i0_tvalid, output i0_tready,
- input [WIDTH-1:0] i1_tdata, input i1_tlast, input i1_tvalid, output i1_tready,
- input [WIDTH-1:0] i2_tdata, input i2_tlast, input i2_tvalid, output i2_tready,
- input [WIDTH-1:0] i3_tdata, input i3_tlast, input i3_tvalid, output i3_tready,
- output [WIDTH-1:0] o_tdata, output o_tlast, output o_tvalid, input o_tready);
-
- wire [WIDTH-1:0] o_tdata_int;
- wire o_tlast_int, o_tvalid_int, o_tready_int;
-
- reg [3:0] mx_state;
- reg filter_packet;
-
- localparam MX_IDLE = 4'b0000;
- localparam MX_0 = 4'b0001;
- localparam MX_1 = 4'b0010;
- localparam MX_2 = 4'b0100;
- localparam MX_3 = 4'b1000;
-
-
- assign good0 = i0_tdata[15:0]==FILTER0;
- assign good1 = i1_tdata[15:0]==FILTER1;
- assign good2 = i2_tdata[15:0]==FILTER2;
- assign good3 = i3_tdata[15:0]==FILTER3;
-
- always @(posedge clk)
- if(reset | clear)
- mx_state <= MX_IDLE;
- else
- case (mx_state)
- MX_IDLE :
- if(i0_tvalid) begin
- mx_state <= MX_0;
- filter_packet <= !good0;
- end
- else if(i1_tvalid) begin
- mx_state <= MX_1;
- filter_packet <= !good1;
- end
- else if(i2_tvalid) begin
- mx_state <= MX_2;
- filter_packet <= !good2;
- end
- else if(i3_tvalid) begin
- mx_state <= MX_3;
- filter_packet <= !good3;
- end
-
- MX_0 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- if(PRIO)
- mx_state <= MX_IDLE;
- else if(i1_tvalid) begin
- mx_state <= MX_1;
- filter_packet <= !good1;
- end
- else if(i2_tvalid) begin
- mx_state <= MX_2;
- filter_packet <= !good2;
- end
- else if(i3_tvalid) begin
- mx_state <= MX_3;
- filter_packet <= !good3;
- end
- else begin
- mx_state <= MX_IDLE;
- filter_packet <= 0;
- end
-
- MX_1 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- if(PRIO)
- mx_state <= MX_IDLE;
- else if(i2_tvalid) begin
- mx_state <= MX_2;
- filter_packet <= !good2;
- end
- else if(i3_tvalid) begin
- mx_state <= MX_3;
- filter_packet <= !good3;
- end
- else begin
- mx_state <= MX_IDLE;
- filter_packet <= 0;
- end
- MX_2 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- if(PRIO)
- mx_state <= MX_IDLE;
- else if(i3_tvalid) begin
- mx_state <= MX_3;
- filter_packet <= !good3;
- end
- else begin
- mx_state <= MX_IDLE;
- filter_packet <= 0;
- end
- MX_3 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- begin
- mx_state <= MX_IDLE;
- filter_packet <= 0;
- end
-
- default :
- mx_state <= MX_IDLE;
- endcase // case (mx_state)
-
- assign {i3_tready, i2_tready, i1_tready, i0_tready} = mx_state & {4{o_tready_int}};
-
- assign o_tvalid_int = |(mx_state & ({i3_tvalid, i2_tvalid, i1_tvalid, i0_tvalid}));
-
- assign {o_tlast_int, o_tdata_int} = mx_state[3] ? {i3_tlast, i3_tdata} :
- mx_state[2] ? {i2_tlast, i2_tdata} :
- mx_state[1] ? {i1_tlast, i1_tdata} :
- {i0_tlast, i0_tdata};
-
- generate
- if(BUFFER == 0)
- begin
- assign o_tdata = o_tdata_int;
- assign o_tlast = o_tlast_int;
- assign o_tvalid = o_tvalid_int & !filter_packet;
- assign o_tready_int = o_tready | filter_packet;
- end
- else
- begin
- wire o_tready_int_fifo;
- assign o_tready_int = o_tready_int_fifo | filter_packet;
-
- axi_fifo_short #(.WIDTH(WIDTH+1)) axi_fifo_short
- (.clk(clk), .reset(reset), .clear(clear),
- .i_tdata({o_tlast_int,o_tdata_int}), .i_tvalid(o_tvalid_int & !filter_packet), .i_tready(o_tready_int_fifo),
- .o_tdata({o_tlast,o_tdata}), .o_tvalid(o_tvalid), .o_tready(o_tready),
- .space(), .occupied());
- end
- endgenerate
-
-endmodule // axi__mux4
diff --git a/fpga/usrp3/lib/fifo/axi_loopback.v b/fpga/usrp3/lib/fifo/axi_loopback.v
deleted file mode 100644
index aea9ae22c..000000000
--- a/fpga/usrp3/lib/fifo/axi_loopback.v
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright 2012 Ettus Research LLC
-
-//
-// axi_loopback.v
-//
-// Loopback all data assuming it's in CHDR format, and swap SRC/DST in the SID in the process
-// thus reflecting it back to it's origin...in theory!
-//
-
-module axi_loopback
- (
- input clk,
- input reset,
- // Input AXIS
- input [WIDTH-1:0] i_tdata,
- input i_tlast,
- input i_tvalid,
- output i_tready,
- // Output AXIS
- output [WIDTH-1:0] o_tdata,
- output o_tlast,
- output o_tvalid,
- input o_tready
- );
-
-
- localparam WIDTH=64;
-
- wire [WIDTH-1:0] fifoin_tdata,fifoout_tdata,dmux_tdata;
- wire fifoin_tlast,dmux_tlast;
- wire fifoin_tvalid,dmux_tvalid;
- wire fifoin_tready,dmux_tready;
-
- // Since most real endpoints go via Demux4 place one in here to look for bugs.
- axi_demux4 #(.ACTIVE_CHAN(4'b0001), .WIDTH(WIDTH)) demux
- (.clk(clk), .reset(reset), .clear(1'b0),
- .header(), .dest(2'b00),
- .i_tdata(i_tdata), .i_tlast(i_tlast), .i_tvalid(i_tvalid), .i_tready(i_tready),
- .o0_tdata(dmux_tdata), .o0_tlast(dmux_tlast), .o0_tvalid(dmux_tvalid), .o0_tready(dmux_tready),
- .o1_tdata(), .o1_tlast(), .o1_tvalid(), .o1_tready(1'b1),
- .o2_tdata(), .o2_tlast(), .o2_tvalid(), .o2_tready(1'b1),
- .o3_tdata(), .o3_tlast(), .o3_tvalid(), .o3_tready(1'b1));
-
- axi_fifo_short #(.WIDTH(WIDTH+1)) axi_fifo_short1
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata({dmux_tlast,dmux_tdata}), .i_tvalid(dmux_tvalid), .i_tready(dmux_tready),
- .o_tdata({fifoin_tlast,fifoin_tdata}), .o_tvalid(fifoin_tvalid), .o_tready(fifoin_tready),
- .space(), .occupied());
-
- reg header;
- always @(posedge clk) begin
- if(reset) begin
- header <= 1'b1;
- end else if (header) begin
- if(fifoin_tvalid & fifoin_tready & ~fifoin_tlast) header <= 1'b0;
- end else begin
- if(fifoin_tvalid & fifoin_tready & fifoin_tlast) header <= 1'b1;
- end
- end
-
- assign fifoout_tdata = header ?
- {fifoin_tdata[63:32] ,fifoin_tdata[15:0],fifoin_tdata[31:16]} :
- fifoin_tdata;
-
- axi_fifo_short #(.WIDTH(WIDTH+1)) axi_fifo_short2
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata({fifoin_tlast,fifoout_tdata}), .i_tvalid(fifoin_tvalid), .i_tready(fifoin_tready),
- .o_tdata({o_tlast,o_tdata}), .o_tvalid(o_tvalid), .o_tready(o_tready),
- .space(), .occupied());
-
-endmodule // axi_loopback
diff --git a/fpga/usrp3/lib/fifo/axi_mux4.v b/fpga/usrp3/lib/fifo/axi_mux4.v
deleted file mode 100644
index 91bfe43a9..000000000
--- a/fpga/usrp3/lib/fifo/axi_mux4.v
+++ /dev/null
@@ -1,112 +0,0 @@
-
-// Copyright 2012 Ettus Research LLC
-// axi_mux -- takes 4 64-bit AXI stream, merges them to 1 output channel
-// Round-robin if PRIO=0, priority if PRIO=1 (lower number ports get priority)
-// Bubble cycles are inserted after each packet in PRIO mode, or on wraparound in Round Robin mode
-
-module axi_mux4
- #(parameter PRIO=0,
- parameter WIDTH=64,
- parameter BUFFER=0)
- (input clk, input reset, input clear,
- input [WIDTH-1:0] i0_tdata, input i0_tlast, input i0_tvalid, output i0_tready,
- input [WIDTH-1:0] i1_tdata, input i1_tlast, input i1_tvalid, output i1_tready,
- input [WIDTH-1:0] i2_tdata, input i2_tlast, input i2_tvalid, output i2_tready,
- input [WIDTH-1:0] i3_tdata, input i3_tlast, input i3_tvalid, output i3_tready,
- output [WIDTH-1:0] o_tdata, output o_tlast, output o_tvalid, input o_tready);
-
- wire [WIDTH-1:0] o_tdata_int;
- wire o_tlast_int, o_tvalid_int, o_tready_int;
-
- reg [3:0] mx_state;
- localparam MX_IDLE = 4'b0000;
- localparam MX_0 = 4'b0001;
- localparam MX_1 = 4'b0010;
- localparam MX_2 = 4'b0100;
- localparam MX_3 = 4'b1000;
-
- always @(posedge clk)
- if(reset | clear)
- mx_state <= MX_IDLE;
- else
- case (mx_state)
- MX_IDLE :
- if(i0_tvalid)
- mx_state <= MX_0;
- else if(i1_tvalid)
- mx_state <= MX_1;
- else if(i2_tvalid)
- mx_state <= MX_2;
- else if(i3_tvalid)
- mx_state <= MX_3;
-
- MX_0 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- if(PRIO)
- mx_state <= MX_IDLE;
- else if(i1_tvalid)
- mx_state <= MX_1;
- else if(i2_tvalid)
- mx_state <= MX_2;
- else if(i3_tvalid)
- mx_state <= MX_3;
- else
- mx_state <= MX_IDLE;
-
- MX_1 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- if(PRIO)
- mx_state <= MX_IDLE;
- else if(i2_tvalid)
- mx_state <= MX_2;
- else if(i3_tvalid)
- mx_state <= MX_3;
- else
- mx_state <= MX_IDLE;
-
- MX_2 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- if(PRIO)
- mx_state <= MX_IDLE;
- else if(i3_tvalid)
- mx_state <= MX_3;
- else
- mx_state <= MX_IDLE;
-
- MX_3 :
- if(o_tready_int & o_tvalid_int & o_tlast_int)
- if(PRIO)
- mx_state <= MX_IDLE;
- else
- mx_state <= MX_IDLE;
-
- default :
- mx_state <= MX_IDLE;
- endcase // case (mx_state)
-
- assign {i3_tready, i2_tready, i1_tready, i0_tready} = mx_state & {4{o_tready_int}};
-
- assign o_tvalid_int = |(mx_state & ({i3_tvalid, i2_tvalid, i1_tvalid, i0_tvalid}));
-
- assign {o_tlast_int, o_tdata_int} = mx_state[3] ? {i3_tlast, i3_tdata} :
- mx_state[2] ? {i2_tlast, i2_tdata} :
- mx_state[1] ? {i1_tlast, i1_tdata} :
- {i0_tlast, i0_tdata};
-
- generate
- if(BUFFER == 0)
- begin
- assign o_tdata = o_tdata_int;
- assign o_tlast = o_tlast_int;
- assign o_tvalid = o_tvalid_int;
- assign o_tready_int = o_tready;
- end
- else
- axi_fifo_short #(.WIDTH(WIDTH+1)) axi_fifo_short
- (.clk(clk), .reset(reset), .clear(clear),
- .i_tdata({o_tlast_int,o_tdata_int}), .i_tvalid(o_tvalid_int), .i_tready(o_tready_int),
- .o_tdata({o_tlast,o_tdata}), .o_tvalid(o_tvalid), .o_tready(o_tready),
- .space(), .occupied());
- endgenerate
-
-endmodule // axi__mux4
diff --git a/fpga/usrp3/lib/fifo/axi_mux8.v b/fpga/usrp3/lib/fifo/axi_mux8.v
deleted file mode 100644
index 5e620d3aa..000000000
--- a/fpga/usrp3/lib/fifo/axi_mux8.v
+++ /dev/null
@@ -1,56 +0,0 @@
-
-// Copyright 2012 Ettus Research LLC
-// axi_mux -- takes 8 64-bit AXI stream, merges them to 1 output channel
-// Round-robin if PRIO=0, priority if PRIO=1 (lower number ports get priority)
-// Bubble cycles are inserted after each packet in PRIO mode, or on wraparound in Round Robin mode
-
-module axi_mux8 #(
- parameter PRIO=0,
- parameter WIDTH=64,
- parameter BUFFER=0
-) (
- input clk, input reset, input clear,
- input [WIDTH-1:0] i0_tdata, input i0_tlast, input i0_tvalid, output i0_tready,
- input [WIDTH-1:0] i1_tdata, input i1_tlast, input i1_tvalid, output i1_tready,
- input [WIDTH-1:0] i2_tdata, input i2_tlast, input i2_tvalid, output i2_tready,
- input [WIDTH-1:0] i3_tdata, input i3_tlast, input i3_tvalid, output i3_tready,
- input [WIDTH-1:0] i4_tdata, input i4_tlast, input i4_tvalid, output i4_tready,
- input [WIDTH-1:0] i5_tdata, input i5_tlast, input i5_tvalid, output i5_tready,
- input [WIDTH-1:0] i6_tdata, input i6_tlast, input i6_tvalid, output i6_tready,
- input [WIDTH-1:0] i7_tdata, input i7_tlast, input i7_tvalid, output i7_tready,
- output [WIDTH-1:0] o_tdata, output o_tlast, output o_tvalid, input o_tready
-);
-
- wire [WIDTH-1:0] o_tdata_int0, o_tdata_int1;
- wire o_tlast_int0, o_tlast_int1;
- wire o_tvalid_int0, o_tvalid_int1;
- wire o_tready_int0, o_tready_int1;
-
- axi_mux4 #(.PRIO(PRIO), .WIDTH(WIDTH), .BUFFER(0)) mux4_int0 (
- .clk(clk), .reset(reset), .clear(clear),
- .i0_tdata(i0_tdata), .i0_tlast(i0_tlast), .i0_tvalid(i0_tvalid), .i0_tready(i0_tready),
- .i1_tdata(i1_tdata), .i1_tlast(i1_tlast), .i1_tvalid(i1_tvalid), .i1_tready(i1_tready),
- .i2_tdata(i2_tdata), .i2_tlast(i2_tlast), .i2_tvalid(i2_tvalid), .i2_tready(i2_tready),
- .i3_tdata(i3_tdata), .i3_tlast(i3_tlast), .i3_tvalid(i3_tvalid), .i3_tready(i3_tready),
- .o_tdata(o_tdata_int0), .o_tlast(o_tlast_int0), .o_tvalid(o_tvalid_int0), .o_tready(o_tready_int0)
- );
-
- axi_mux4 #(.PRIO(PRIO), .WIDTH(WIDTH), .BUFFER(0)) mux4_int1 (
- .clk(clk), .reset(reset), .clear(clear),
- .i0_tdata(i4_tdata), .i0_tlast(i4_tlast), .i0_tvalid(i4_tvalid), .i0_tready(i4_tready),
- .i1_tdata(i5_tdata), .i1_tlast(i5_tlast), .i1_tvalid(i5_tvalid), .i1_tready(i5_tready),
- .i2_tdata(i6_tdata), .i2_tlast(i6_tlast), .i2_tvalid(i6_tvalid), .i2_tready(i6_tready),
- .i3_tdata(i7_tdata), .i3_tlast(i7_tlast), .i3_tvalid(i7_tvalid), .i3_tready(i7_tready),
- .o_tdata(o_tdata_int1), .o_tlast(o_tlast_int1), .o_tvalid(o_tvalid_int1), .o_tready(o_tready_int1)
- );
-
- axi_mux4 #(.PRIO(PRIO), .WIDTH(WIDTH), .BUFFER(BUFFER)) mux2 (
- .clk(clk), .reset(reset), .clear(clear),
- .i0_tdata(o_tdata_int0), .i0_tlast(o_tlast_int0), .i0_tvalid(o_tvalid_int0), .i0_tready(o_tready_int0),
- .i1_tdata(o_tdata_int1), .i1_tlast(o_tlast_int1), .i1_tvalid(o_tvalid_int1), .i1_tready(o_tready_int1),
- .i2_tdata(0), .i2_tlast(1'b0), .i2_tvalid(1'b0), .i2_tready(),
- .i3_tdata(0), .i3_tlast(1'b0), .i3_tvalid(1'b0), .i3_tready(),
- .o_tdata(o_tdata), .o_tlast(o_tlast), .o_tvalid(o_tvalid), .o_tready(o_tready)
- );
-
-endmodule // axi_mux8
diff --git a/fpga/usrp3/lib/fifo/axi_packet_gate.v b/fpga/usrp3/lib/fifo/axi_packet_gate.v
deleted file mode 100644
index 6d10a8cf4..000000000
--- a/fpga/usrp3/lib/fifo/axi_packet_gate.v
+++ /dev/null
@@ -1,78 +0,0 @@
-//
-// Copyright 2012 Ettus Research LLC
-//
-
-
-// Hold packets in fifo until they are complete. This prevents slowly-built packets
-// from clogging up the downstream. This block will hold up to 255 packets.
-// Will permanently block if a single packet is bigger than the fifo.
-// Will also drop any packet with an error signalled on the last line.
-// This is useful after an ethernet interface to drop packets with bad CRCs.
-
-module axi_packet_gate
- #(parameter WIDTH=68,
- parameter SIZE=10)
- (input clk,
- input reset,
- input clear,
- input [WIDTH-1:0] i_tdata,
- input i_tlast,
- input i_terror,
- input i_tvalid,
- output i_tready,
- output [WIDTH-1:0] o_tdata,
- output o_tlast,
- output o_tvalid,
- input o_tready
- );
-
- reg [7:0] num_packets;
- reg dump;
-
- wire o_tvalid_int, o_tready_int, i_tvalid_int, i_tready_int;
-
- assign i_tvalid_int = (~dump & (num_packets != 8'hFF)) ? i_tvalid : 1'b0;
- assign i_tready = (~dump & (num_packets != 8'hFF)) ? i_tready_int : 1'b0;
-
- assign o_tvalid = (num_packets != 8'h0) ? o_tvalid_int : 1'b0;
- assign o_tready_int = (num_packets != 8'h0) ? o_tready : 1'b0;
-
- wire last_in = i_tvalid_int & i_tready_int & i_tlast;
- wire last_out = o_tvalid_int & o_tready_int & o_tlast;
-
- always @(posedge clk)
- if(reset | clear)
- begin
- num_packets <= 8'd0;
- dump <= 1'b0;
- end
- else
- if(dump)
- if(num_packets != 8'd0)
- if(last_out)
- num_packets <= num_packets - 8'd1;
- else
- ;
- else
- dump <= 1'b0;
- else
- if(last_in)
- if(i_terror)
- begin
- dump <= 1'b1;
- if(last_out)
- num_packets <= num_packets - 8'd1;
- end
- else if(~last_out)
- num_packets <= num_packets + 8'd1;
- else
- ;
- else if(last_out)
- num_packets <= num_packets - 8'd1;
-
- axi_fifo #(.SIZE(SIZE), .WIDTH(WIDTH+1)) axi_fifo
- (.clk(clk), .reset(reset), .clear(clear | (dump & (num_packets == 8'd0))),
- .i_tdata({i_tlast,i_tdata}), .i_tvalid(i_tvalid_int), .i_tready(i_tready_int),
- .o_tdata({o_tlast,o_tdata}), .o_tvalid(o_tvalid_int), .o_tready(o_tready_int));
-
-endmodule // axi_packet_gate
diff --git a/fpga/usrp3/lib/fifo/axi_packet_gate_tb.v b/fpga/usrp3/lib/fifo/axi_packet_gate_tb.v
deleted file mode 100644
index 30f8c76e4..000000000
--- a/fpga/usrp3/lib/fifo/axi_packet_gate_tb.v
+++ /dev/null
@@ -1,106 +0,0 @@
-`timescale 1ns/1ps
-
-module axi_packet_gate_tb();
-
- reg clk = 0;
- reg reset = 1;
-
- always #10 clk = ~clk;
-
- initial $dumpfile("axi_packet_gate_tb.vcd");
- initial $dumpvars(0,axi_packet_gate_tb);
-
- task send_packet;
- input [63:0] data_start;
- input [2:0] user;
- input [31:0] len;
- input error;
-
- begin
- // Send a packet
- @(posedge clk);
- {i_terror, i_tuser, i_tlast, i_tdata} <= { 1'b0, user, 1'b0, data_start };
- repeat(len-1)
- begin
- i_tvalid <= 1;
- @(posedge clk);
- i_tdata <= i_tdata + 1;
- end
- i_tlast <= 1;
- i_terror <= error;
- i_tdata <= i_tdata + 1;
- @(posedge clk);
- i_tvalid <= 1'b0;
-
- @(posedge clk);
- end
- endtask // send_packet
-
-
- initial
- begin
- #1000 reset = 0;
- #200000;
- $finish;
- end
-
- wire [63:0] o_tdata;
- reg [63:0] i_tdata;
- wire [2:0] o_tuser;
- reg [2:0] i_tuser;
- reg i_tlast;
- wire o_tlast;
- wire o_tvalid, i_tready;
- reg i_tvalid, o_tready;
- reg i_terror;
-
- localparam RPT_COUNT = 16;
-
- initial
- begin
- i_tvalid <= 0;
- o_tready <= 0;
-
- while(reset)
- @(posedge clk);
- @(posedge clk);
-
- send_packet(64'hA0,3'd0, 16, 0);
- send_packet(64'hB0,3'd0, 16, 0);
- o_tready <= 1;
- send_packet(64'hC0,3'd0, 16, 1);
- send_packet(64'hD0,3'd0, 16, 0);
- send_packet(64'hE0,3'd0, 16, 0);
- send_packet(64'hF0,3'd0, 16, 0);
-
- @(posedge clk);
-
- end // initial begin
-
- wire i_terror_int, i_tlast_int, i_tready_int, i_tvalid_int;
- wire [2:0] i_tuser_int;
- wire [63:0] i_tdata_int;
- wire o_tlast_int, o_tready_int, o_tvalid_int;
- wire [2:0] o_tuser_int;
- wire [63:0] o_tdata_int;
-
- axi_fifo #(.WIDTH(69), .SIZE(10)) fifo
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata({i_terror,i_tlast,i_tuser,i_tdata}), .i_tvalid(i_tvalid), .i_tready(i_tready),
- .o_tdata({i_terror_int,i_tlast_int,i_tuser_int,i_tdata_int}), .o_tvalid(i_tvalid_int), .o_tready(i_tready_int));
-
- axi_packet_gate #(.WIDTH(67), .SIZE(10)) dut
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata({i_tuser_int,i_tdata_int}), .i_terror(i_terror_int), .i_tlast(i_tlast_int), .i_tvalid(i_tvalid_int), .i_tready(i_tready_int),
- .o_tdata({o_tuser_int,o_tdata_int}), .o_tlast(o_tlast_int), .o_tvalid(o_tvalid_int), .o_tready(o_tready_int));
-
- axi_fifo #(.WIDTH(68), .SIZE(10)) fifo_out
- (.clk(clk), .reset(reset), .clear(1'b0),
- .i_tdata({o_tlast_int,o_tuser_int,o_tdata_int}), .i_tvalid(o_tvalid_int), .i_tready(o_tready_int),
- .o_tdata({o_tlast,o_tuser,o_tdata}), .o_tvalid(o_tvalid), .o_tready(o_tready));
-
- always @(posedge clk)
- if(o_tvalid & o_tready)
- $display("TUSER %x\tTLAST %x\tTDATA %x",o_tuser,o_tlast, o_tdata);
-
-endmodule // axi_packet_gate_tb
diff --git a/fpga/usrp3/lib/fifo/monitor_axi_fifo.v b/fpga/usrp3/lib/fifo/monitor_axi_fifo.v
deleted file mode 100644
index f5d73455f..000000000
--- a/fpga/usrp3/lib/fifo/monitor_axi_fifo.v
+++ /dev/null
@@ -1,123 +0,0 @@
-//
-// Copyright 2012 Ettus Research LLC
-//
-
-
-//
-// This module is instantiated in parallel with a FIFO with AXI4-STREAM interfaces.
-// It tracks how many complete packets are contained within the FIFO, and also indicates
-// when the first word of a packet is presented on the FIFO outputs.
-//
-
-
-module monitor_axi_fifo
- #(
- parameter COUNT_BITS=8
- )
- (
- input clk,
- input reset,
- input clear,
- // Monitored FIFO signals
- input i_tvalid,
- input i_tready,
- input i_tlast,
- input o_tvalid,
- input o_tready,
- input o_tlast,
- // FIFO status outputs
- output reg [COUNT_BITS-1:0] pkt_count, // Exact whole packet count
- output pkt_present // Flags any whole packets present
-
- );
-
- localparam WAIT_SOF = 0;
- localparam WAIT_EOF = 1;
-
-
- reg in_state, out_state;
- reg pause_tx;
-
- //
- // Count packets arriving into large FIFO
- //
- always @(posedge clk)
- if (reset | clear) begin
- in_state <= WAIT_SOF;
- end else
- case(in_state)
- //
- // After RESET or the EOF of previous packet, the first cycle with
- // input valid and input ready asserted is the SOF.
- //
- WAIT_SOF:
- if (i_tvalid && i_tready) begin
- in_state <= WAIT_EOF;
- end else begin
- in_state <= WAIT_SOF;
- end
- //
- // EOF is signalled by the assertion i_tlast whilst input valid and ready are asserted.
- //
- WAIT_EOF:
- if (i_tlast && i_tvalid && i_tready) begin
- in_state <= WAIT_SOF;
- end else begin
- in_state <= WAIT_EOF;
- end
- endcase // case(in_state)
-
-
-
- //
- // Count packets leaving large FIFO
- //
- always @(posedge clk)
- if (reset | clear) begin
- out_state <= WAIT_SOF;
- end else
- case(out_state)
- //
- // After RESET or the EOF of previous packet, the first cycle with
- // output valid and output ready asserted is the SOF.
- //
- WAIT_SOF:
- if (o_tvalid && o_tready) begin
- out_state <= WAIT_EOF;
- end else begin
- out_state <= WAIT_SOF;
- end
- //
- // EOF is signalled by o_tlast asserted whilst output valid and ready asserted.
- //
- WAIT_EOF:
- if (o_tlast && o_tvalid && o_tready) begin
- out_state <= WAIT_SOF;
- end else begin
- out_state <= WAIT_EOF;
- end
- endcase // case(in_state)
-
-
- //
- // Count packets in FIFO.
- // No protection on counter wrap,
- // unclear how to gracefully deal with it.
- // Perhaps generate Error IRQ so that S/W could clean up?
- // Configure so that the pkt_count is ample for the application.
- //
- always @(posedge clk)
- if (reset | clear)
- pkt_count <= 0;
- else if (((out_state==WAIT_EOF) && o_tlast && o_tvalid && o_tready ) &&
- ((in_state==WAIT_EOF) && i_tlast && i_tvalid && i_tready))
- pkt_count <= pkt_count;
- else if ((out_state==WAIT_EOF) && o_tlast && o_tvalid && o_tready)
- pkt_count <= pkt_count - 1;
- else if ((in_state==WAIT_EOF) && i_tlast && i_tvalid && i_tready)
- pkt_count <= pkt_count + 1;
-
- // Non-zero packet count indicates packet(s) present.
- assign pkt_present = |pkt_count;
-
-endmodule // count_tx_packets
diff --git a/fpga/usrp3/lib/fifo/shortfifo.v b/fpga/usrp3/lib/fifo/shortfifo.v
deleted file mode 100644
index fbf92e2ed..000000000
--- a/fpga/usrp3/lib/fifo/shortfifo.v
+++ /dev/null
@@ -1,92 +0,0 @@
-//
-// Copyright 2011 Ettus Research LLC
-//
-
-
-
-module shortfifo
- #(parameter WIDTH=32)
- (input clk, input rst,
- input [WIDTH-1:0] datain,
- output [WIDTH-1:0] dataout,
- input read,
- input write,
- input clear,
- output reg full,
- output reg empty,
- output reg [4:0] space,
- output reg [4:0] occupied);
-
- reg [3:0] a;
- genvar i;
-
- generate
- for (i=0;i<WIDTH;i=i+1)
- begin : gen_srl16
- SRL16E
- srl16e(.Q(dataout[i]),
- .A0(a[0]),.A1(a[1]),.A2(a[2]),.A3(a[3]),
- .CE(write),.CLK(clk),.D(datain[i]));
- end
- endgenerate
-
- always @(posedge clk)
- if(rst)
- begin
- a <= 0;
- empty <= 1;
- full <= 0;
- end
- else if(clear)
- begin
- a <= 0;
- empty <= 1;
- full<= 0;
- end
- else if(read & ~write)
- begin
- full <= 0;
- if(a==0)
- empty <= 1;
- else
- a <= a - 1;
- end
- else if(write & ~read)
- begin
- empty <= 0;
- if(~empty)
- a <= a + 1;
- if(a == 14)
- full <= 1;
- end
-
- // NOTE will fail if you write into a full fifo or read from an empty one
-
- //////////////////////////////////////////////////////////////
- // space and occupied are used for diagnostics, not
- // guaranteed correct
-
- //assign space = full ? 0 : empty ? 16 : 15-a;
- //assign occupied = empty ? 0 : full ? 16 : a+1;
-
- always @(posedge clk)
- if(rst)
- space <= 16;
- else if(clear)
- space <= 16;
- else if(read & ~write)
- space <= space + 1;
- else if(write & ~read)
- space <= space - 1;
-
- always @(posedge clk)
- if(rst)
- occupied <= 0;
- else if(clear)
- occupied <= 0;
- else if(read & ~write)
- occupied <= occupied - 1;
- else if(write & ~read)
- occupied <= occupied + 1;
-
-endmodule // shortfifo
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-04 02:21:37 +0000