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-rw-r--r--usrp2/control_lib/double_buffer_tb.v253
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diff --git a/usrp2/control_lib/double_buffer_tb.v b/usrp2/control_lib/double_buffer_tb.v
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+++ b/usrp2/control_lib/double_buffer_tb.v
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+//
+// Copyright 2011 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+
+module double_buffer_tb();
+
+ reg clk = 0;
+ reg rst = 1;
+ reg clear = 0;
+ initial #1000 rst = 0;
+ always #50 clk = ~clk;
+
+ wire src_rdy_o;
+ reg src_rdy_i = 0;
+ wire dst_rdy_o;
+
+ wire dst_rdy_i = 1;
+ wire [35:0] data_o;
+ reg [35:0] data_i;
+
+ wire access_we, access_stb, access_done, access_ok, access_skip_read;
+
+ wire [8:0] access_adr, access_len;
+ wire [35:0] dsp_to_buf, buf_to_dsp;
+ reg set_stb = 0;
+
+ double_buffer db
+ (.clk(clk),.reset(rst),.clear(0),
+ .access_we(access_we), .access_stb(access_stb), .access_ok(access_ok), .access_done(access_done),
+ .access_skip_read(access_skip_read), .access_adr(access_adr), .access_len(access_len),
+ .access_dat_i(dsp_to_buf), .access_dat_o(buf_to_dsp),
+
+ .data_i(data_i), .src_rdy_i(src_rdy_i), .dst_rdy_o(dst_rdy_o),
+ .data_o(data_o), .src_rdy_o(src_rdy_o), .dst_rdy_i(dst_rdy_i));
+
+ dspengine_16to8 dspengine_16to8
+ (.clk(clk),.reset(rst),.clear(0),
+ .set_stb(set_stb), .set_addr(0), .set_data({13'h0,1'b1,18'h00400}),
+ .access_we(access_we), .access_stb(access_stb), .access_ok(access_ok), .access_done(access_done),
+ .access_skip_read(access_skip_read), .access_adr(access_adr), .access_len(access_len),
+ .access_dat_i(buf_to_dsp), .access_dat_o(dsp_to_buf));
+
+ always @(posedge clk)
+ if(src_rdy_o & dst_rdy_i)
+ begin
+ $display("SOF %d, EOF %d, OCC %x, DAT %x",data_o[32],data_o[33],data_o[35:34],data_o[31:0]);
+ if(data_o[33])
+ $display();
+ end
+ initial $dumpfile("double_buffer_tb.vcd");
+ initial $dumpvars(0,double_buffer_tb);
+
+ initial
+ begin
+ @(negedge rst);
+ @(posedge clk);
+ @(posedge clk);
+ @(posedge clk);
+
+ // Passthrough
+ $display("Passthrough");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'hFFFFFFFF};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h04050607};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h08090a0b};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'h0c0d0e0f};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ repeat (5)
+ @(posedge clk);
+
+ $display("Enabled");
+ set_stb <= 1;
+ @(posedge clk);
+ set_stb <= 0;
+
+ @(posedge clk);
+ $display("Non-IF Data Passthrough");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'hC0000000};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h14151617};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h18191a1b};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'h1c1d1e1f};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ while(~dst_rdy_o)
+ @(posedge clk);
+
+ $display("No StreamID, No Trailer, Even");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'h0000FFFF};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h01000200};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h03000400};
+ src_rdy_i <= 0;
+ @(posedge clk);
+ @(posedge clk);
+ @(posedge clk);
+ @(posedge clk);
+ src_rdy_i <= 1;
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h05000600};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h07000800};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h09000a00};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'h0b000c00};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ while(~dst_rdy_o)
+ @(posedge clk);
+
+ $display("No StreamID, No Trailer, Odd");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'h0000FFFF};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h11001200};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h13001400};
+ src_rdy_i <= 0;
+ @(posedge clk);
+ src_rdy_i <= 1;
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h15001600};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h17001800};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'h19001a00};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ while(~dst_rdy_o)
+ @(posedge clk);
+
+ $display("No StreamID, Trailer, Even");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'h0400FFFF};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h21002200};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h23002400};
+ src_rdy_i <= 0;
+ @(posedge clk);
+ src_rdy_i <= 1;
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h25002600};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h27002800};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'h29002a00};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ while(~dst_rdy_o)
+ @(posedge clk);
+
+ $display("No StreamID, Trailer, Odd");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'h0400FFFF};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h31003200};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h33003400};
+ src_rdy_i <= 0;
+ @(posedge clk);
+ src_rdy_i <= 1;
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h35003600};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'h39003a00};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ while(~dst_rdy_o)
+ @(posedge clk);
+
+ $display("StreamID, No Trailer, Even");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'h1000FFFF};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h11001200};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h13001400};
+ src_rdy_i <= 0;
+ @(posedge clk);
+ src_rdy_i <= 1;
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h15001600};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'h17001800};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'h19001a00};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ while(~dst_rdy_o)
+ @(posedge clk);
+
+ $display("StreamID, Trailer, Odd");
+ src_rdy_i <= 1;
+ data_i <= { 2'b00,1'b0,1'b1,32'h1400FFFF};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'ha100a200};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'ha300a400};
+ src_rdy_i <= 0;
+ @(posedge clk);
+ src_rdy_i <= 1;
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'ha500a600};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b0,1'b0,32'ha700a800};
+ @(posedge clk);
+ data_i <= { 2'b00,1'b1,1'b0,32'hbbb0bbb0};
+ @(posedge clk);
+ src_rdy_i <= 0;
+ @(posedge clk);
+
+ end
+
+ initial #28000 $finish;
+endmodule // double_buffer_tb
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