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| author | Martin Braun <martin.braun@ettus.com> | 2020-01-23 16:10:22 -0800 |
|---|---|---|
| committer | Martin Braun <martin.braun@ettus.com> | 2020-01-28 09:35:36 -0800 |
| commit | bafa9d95453387814ef25e6b6256ba8db2df612f (patch) | |
| tree | 39ba24b5b67072d354775272e687796bb511848d /fpga/usrp3/lib/sim/simple_gemac | |
| parent | 3075b981503002df3115d5f1d0b97d2619ba30f2 (diff) | |
| download | uhd-bafa9d95453387814ef25e6b6256ba8db2df612f.tar.gz uhd-bafa9d95453387814ef25e6b6256ba8db2df612f.tar.bz2 uhd-bafa9d95453387814ef25e6b6256ba8db2df612f.zip | |
Merge FPGA repository back into UHD repository
The FPGA codebase was removed from the UHD repository in 2014 to reduce
the size of the repository. However, over the last half-decade, the
split between the repositories has proven more burdensome than it has
been helpful. By merging the FPGA code back, it will be possible to
create atomic commits that touch both FPGA and UHD codebases. Continuous
integration testing is also simplified by merging the repositories,
because it was previously difficult to automatically derive the correct
UHD branch when testing a feature branch on the FPGA repository.
This commit also updates the license files and paths therein.
We are therefore merging the repositories again. Future development for
FPGA code will happen in the same repository as the UHD host code and
MPM code.
== Original Codebase and Rebasing ==
The original FPGA repository will be hosted for the foreseeable future
at its original local location: https://github.com/EttusResearch/fpga/
It can be used for bisecting, reference, and a more detailed history.
The final commit from said repository to be merged here is
05003794e2da61cabf64dd278c45685a7abad7ec. This commit is tagged as
v4.0.0.0-pre-uhd-merge.
If you have changes in the FPGA repository that you want to rebase onto
the UHD repository, simply run the following commands:
- Create a directory to store patches (this should be an empty
directory):
mkdir ~/patches
- Now make sure that your FPGA codebase is based on the same state as
the code that was merged:
cd src/fpga # Or wherever your FPGA code is stored
git rebase v4.0.0.0-pre-uhd-merge
Note: The rebase command may look slightly different depending on what
exactly you're trying to rebase.
- Create a patch set for your changes versus v4.0.0.0-pre-uhd-merge:
git format-patch v4.0.0.0-pre-uhd-merge -o ~/patches
Note: Make sure that only patches are stored in your output directory.
It should otherwise be empty. Make sure that you picked the correct
range of commits, and only commits you wanted to rebase were exported
as patch files.
- Go to the UHD repository and apply the patches:
cd src/uhd # Or wherever your UHD repository is stored
git am --directory fpga ~/patches/*
rm -rf ~/patches # This is for cleanup
== Contributors ==
The following people have contributed mainly to these files (this list
is not complete):
Co-authored-by: Alex Williams <alex.williams@ni.com>
Co-authored-by: Andrej Rode <andrej.rode@ettus.com>
Co-authored-by: Ashish Chaudhari <ashish@ettus.com>
Co-authored-by: Ben Hilburn <ben.hilburn@ettus.com>
Co-authored-by: Ciro Nishiguchi <ciro.nishiguchi@ni.com>
Co-authored-by: Daniel Jepson <daniel.jepson@ni.com>
Co-authored-by: Derek Kozel <derek.kozel@ettus.com>
Co-authored-by: EJ Kreinar <ej@he360.com>
Co-authored-by: Humberto Jimenez <humberto.jimenez@ni.com>
Co-authored-by: Ian Buckley <ian.buckley@gmail.com>
Co-authored-by: Jörg Hofrichter <joerg.hofrichter@ni.com>
Co-authored-by: Jon Kiser <jon.kiser@ni.com>
Co-authored-by: Josh Blum <josh@joshknows.com>
Co-authored-by: Jonathon Pendlum <jonathan.pendlum@ettus.com>
Co-authored-by: Martin Braun <martin.braun@ettus.com>
Co-authored-by: Matt Ettus <matt@ettus.com>
Co-authored-by: Michael West <michael.west@ettus.com>
Co-authored-by: Moritz Fischer <moritz.fischer@ettus.com>
Co-authored-by: Nick Foster <nick@ettus.com>
Co-authored-by: Nicolas Cuervo <nicolas.cuervo@ettus.com>
Co-authored-by: Paul Butler <paul.butler@ni.com>
Co-authored-by: Paul David <paul.david@ettus.com>
Co-authored-by: Ryan Marlow <ryan.marlow@ettus.com>
Co-authored-by: Sugandha Gupta <sugandha.gupta@ettus.com>
Co-authored-by: Sylvain Munaut <tnt@246tNt.com>
Co-authored-by: Trung Tran <trung.tran@ettus.com>
Co-authored-by: Vidush Vishwanath <vidush.vishwanath@ettus.com>
Co-authored-by: Wade Fife <wade.fife@ettus.com>
Diffstat (limited to 'fpga/usrp3/lib/sim/simple_gemac')
4 files changed, 522 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/sim/simple_gemac/ll8_to_axi64/ll8_to_axi64_tb.v b/fpga/usrp3/lib/sim/simple_gemac/ll8_to_axi64/ll8_to_axi64_tb.v new file mode 100644 index 000000000..ef10a7c9a --- /dev/null +++ b/fpga/usrp3/lib/sim/simple_gemac/ll8_to_axi64/ll8_to_axi64_tb.v @@ -0,0 +1,100 @@ +// +// Copyright 2016 Ettus Research, a National Instruments Company +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +`timescale 1ns/1ps + +module ll8_to_axi64_tb(); + + reg clk = 0; + reg reset = 1; + + always #10 clk = ~clk; + + initial $dumpfile("ll8_to_axi64_tb.vcd"); + initial $dumpvars(0,ll8_to_axi64_tb); + + initial + begin + #1000 reset = 0; + #2000000; + $finish; + end + + wire [63:0] tdata, tdata_int; + wire [3:0] tuser, tuser_int; + wire tlast, tlast_int; + wire tvalid, tvalid_int, tready, tready_int; + + reg [7:0] ll_data; + reg ll_eof, ll_error, ll_src_rdy; + wire ll_dst_rdy; + + wire [7:0] ll_data2; + wire ll_eof2, ll_src_rdy2, ll_dst_rdy2; + + localparam RPT_COUNT = 12; + + initial + begin + ll_src_rdy <= 0; + + while(reset) + @(posedge clk); + + @(posedge clk); + + {ll_error, ll_eof, ll_data} <= { 1'b0, 1'b0, 8'hA0 }; + repeat(RPT_COUNT-1) + begin + ll_src_rdy <= 1; + @(posedge clk); + ll_data <= ll_data + 1; + end + ll_eof <= 1; + ll_data <= ll_data + 1; + @(posedge clk); + + {ll_error, ll_eof, ll_data} <= { 1'b0, 1'b0, 8'hC0 }; + repeat(RPT_COUNT-1) + begin + ll_src_rdy <= 1; + @(posedge clk); + ll_data <= ll_data + 1; + end + ll_eof <= 1; ll_error <= 1; + ll_data <= ll_data + 1; + @(posedge clk); + ll_src_rdy <= 1'b0; + + end + + ll8_to_axi64 #(.START_BYTE(6), .LABEL(8'h89)) ll8_to_axi64 + (.clk(clk), .reset(reset), .clear(1'b0), + .ll_data(ll_data), .ll_eof(ll_eof), .ll_error(ll_error), .ll_src_rdy(ll_src_rdy), .ll_dst_rdy(ll_dst_rdy), + .axi64_tdata(tdata), .axi64_tlast(tlast), .axi64_tuser(tuser), .axi64_tvalid(tvalid), .axi64_tready(tready) ); + + axi_fifo_short #(.WIDTH(69)) axi_fifo_short + (.clk(clk), .reset(reset), .clear(1'b0), + .i_tdata({tlast,tuser,tdata}), .i_tvalid(tvalid), .i_tready(tready), + .o_tdata({tlast_int,tuser_int,tdata_int}), .o_tvalid(tvalid_int), .o_tready(tready_int)); + + axi64_to_ll8 #(.START_BYTE(6)) axi64_to_ll8 + (.clk(clk), .reset(reset), .clear(1'b0), + .axi64_tdata(tdata_int), .axi64_tlast(tlast_int), .axi64_tuser(tuser_int), .axi64_tvalid(tvalid_int), .axi64_tready(tready_int), + .ll_data(ll_data2), .ll_eof(ll_eof2), .ll_src_rdy(ll_src_rdy2), .ll_dst_rdy(ll_dst_rdy2) ); + + /* + always @(posedge clk) + if(ll_src_rdy2 & ll_dst_rdy2) + $display("EOF %x\tDATA %x",ll_eof2, ll_data2); + + */ + assign ll_dst_rdy2 = 1; + + always @(posedge clk) + if(tvalid_int & tready_int) + $display("TERR %x\tTUSER %x\tTLAST %x\tTDATA %x",tuser_int[3],tuser_int[2:0], tlast_int, tdata_int); + +endmodule // ll8_to_axi64_tb diff --git a/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_tb.v b/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_tb.v new file mode 100644 index 000000000..c65db6c98 --- /dev/null +++ b/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_tb.v @@ -0,0 +1,208 @@ +// +// Copyright 2011 Ettus Research LLC +// Copyright 2018 Ettus Research, a National Instruments Company +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// + + + + +module simple_gemac_tb; +`include "eth_tasks.v" + + reg clk = 0; + reg reset = 1; + + initial #1000 reset = 0; + always #50 clk = ~clk; + + wire GMII_RX_DV, GMII_RX_ER, GMII_TX_EN, GMII_TX_ER, GMII_GTX_CLK; + wire [7:0] GMII_RXD, GMII_TXD; + + wire rx_valid, rx_error, rx_ack; + wire tx_ack, tx_valid, tx_error; + + wire [7:0] rx_data, tx_data; + + reg [15:0] pause_time; + reg pause_req = 0; + + wire GMII_RX_CLK = GMII_GTX_CLK; + + reg [7:0] FORCE_DAT_ERR = 0; + reg FORCE_ERR = 0; + + // Loopback + assign GMII_RX_DV = GMII_TX_EN; + assign GMII_RX_ER = GMII_TX_ER | FORCE_ERR; + assign GMII_RXD = GMII_TXD ^ FORCE_DAT_ERR; + + wire [47:0] ucast_addr = 48'hF1F2_F3F4_F5F6; + wire [47:0] mcast_addr = 0; + wire pass_ucast =1, pass_mcast=0, pass_bcast=1, pass_pause=0, pass_all=0; + + simple_gemac simple_gemac + (.clk125(clk), .reset(reset), + .GMII_GTX_CLK(GMII_GTX_CLK), .GMII_TX_EN(GMII_TX_EN), + .GMII_TX_ER(GMII_TX_ER), .GMII_TXD(GMII_TXD), + .GMII_RX_CLK(GMII_RX_CLK), .GMII_RX_DV(GMII_RX_DV), + .GMII_RX_ER(GMII_RX_ER), .GMII_RXD(GMII_RXD), + .pause_req(pause_req), .pause_time(pause_time), .pause_en(1), + .ucast_addr(ucast_addr), .mcast_addr(mcast_addr), + .pass_ucast(pass_ucast), .pass_mcast(pass_mcast), .pass_bcast(pass_bcast), + .pass_pause(pass_pause), .pass_all(pass_all), + .rx_clk(rx_clk), .rx_data(rx_data), + .rx_valid(rx_valid), .rx_error(rx_error), .rx_ack(rx_ack), + .tx_clk(tx_clk), .tx_data(tx_data), + .tx_valid(tx_valid), .tx_error(tx_error), .tx_ack(tx_ack) + ); + + wire rx_ll_sof, rx_ll_eof, rx_ll_src_rdy, rx_ll_dst_rdy; + wire rx_ll_sof2, rx_ll_eof2, rx_ll_src_rdy2; + reg rx_ll_dst_rdy2 = 1; + wire [7:0] rx_ll_data, rx_ll_data2; + wire rx_ll_error, rx_ll_error2; + + rxmac_to_ll8 rx_adapt + (.clk(clk), .reset(reset), .clear(0), + .rx_data(rx_data), .rx_valid(rx_valid), .rx_error(rx_error), .rx_ack(rx_ack), + .ll_data(rx_ll_data), .ll_sof(rx_ll_sof), .ll_eof(rx_ll_eof), .ll_error(rx_ll_error), + .ll_src_rdy(rx_ll_src_rdy), .ll_dst_rdy(rx_ll_dst_rdy)); + + ll8_shortfifo rx_sfifo + (.clk(clk), .reset(reset), .clear(0), + .datain(rx_ll_data), .sof_i(rx_ll_sof), .eof_i(rx_ll_eof), + .error_i(rx_ll_error), .src_rdy_i(rx_ll_src_rdy), .dst_rdy_o(rx_ll_dst_rdy), + .dataout(rx_ll_data2), .sof_o(rx_ll_sof2), .eof_o(rx_ll_eof2), + .error_o(rx_ll_error2), .src_rdy_o(rx_ll_src_rdy2), .dst_rdy_i(rx_ll_dst_rdy2)); + + wire tx_ll_sof, tx_ll_eof, tx_ll_src_rdy, tx_ll_dst_rdy; + reg tx_ll_sof2=0, tx_ll_eof2=0; + reg tx_ll_src_rdy2 = 0; + wire tx_ll_dst_rdy2; + wire [7:0] tx_ll_data; + reg [7:0] tx_ll_data2 = 0; + wire tx_ll_error; + wire tx_ll_error2 = 0; + + ll8_shortfifo tx_sfifo + (.clk(clk), .reset(reset), .clear(clear), + .datain(tx_ll_data2), .sof_i(tx_ll_sof2), .eof_i(tx_ll_eof2), + .error_i(tx_ll_error2), .src_rdy_i(tx_ll_src_rdy2), .dst_rdy_o(tx_ll_dst_rdy2), + .dataout(tx_ll_data), .sof_o(tx_ll_sof), .eof_o(tx_ll_eof), + .error_o(tx_ll_error), .src_rdy_o(tx_ll_src_rdy), .dst_rdy_i(tx_ll_dst_rdy)); + + ll8_to_txmac ll8_to_txmac + (.clk(clk), .reset(reset), .clear(clear), + .ll_data(tx_ll_data), .ll_sof(tx_ll_sof), .ll_eof(tx_ll_eof), + .ll_src_rdy(tx_ll_src_rdy), .ll_dst_rdy(tx_ll_dst_rdy), + .tx_data(tx_data), .tx_valid(tx_valid), .tx_error(tx_error), .tx_ack(tx_ack)); + + initial $dumpfile("simple_gemac_tb.vcd"); + initial $dumpvars(0,simple_gemac_tb); + + integer i; + reg [7:0] pkt_rom[0:65535]; + reg [1023:0] ROMFile; + + initial + for (i=0;i<65536;i=i+1) + pkt_rom[i] <= 8'h0; + + initial + begin + @(negedge reset); + repeat (10) + @(posedge clk); + SendFlowCtrl(16'h0007); // Send flow control + @(posedge clk); + #30000; + @(posedge clk); + SendFlowCtrl(16'h0009); // Increas flow control before it expires + #10000; + @(posedge clk); + SendFlowCtrl(16'h0000); // Cancel flow control before it expires + @(posedge clk); + + SendPacket_to_ll8(8'hAA,10); // This packet gets dropped by the filters + repeat (10) + @(posedge clk); + + SendPacketFromFile_ll8(60,0,0); // The rest are valid packets + repeat (10) + @(posedge clk); + + SendPacketFromFile_ll8(61,0,0); + repeat (10) + @(posedge clk); + SendPacketFromFile_ll8(62,0,0); + repeat (10) + @(posedge clk); + SendPacketFromFile_ll8(63,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_ll8(64,0,0); + repeat (10) + @(posedge clk); + SendPacketFromFile_ll8(59,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_ll8(58,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_ll8(100,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_ll8(200,150,30); // waiting 14 empties the fifo, 15 underruns + repeat (1) + @(posedge clk); + SendPacketFromFile_ll8(100,0,30); + #10000 $finish; + end + + // Force a CRC error + initial + begin + #90000; + @(posedge clk); + FORCE_DAT_ERR <= 8'h10; + @(posedge clk); + FORCE_DAT_ERR <= 8'h00; + end + + // Force an RX_ER error (i.e. link loss) + initial + begin + #116000; + @(posedge clk); + FORCE_ERR <= 1; + @(posedge clk); + FORCE_ERR <= 0; + end + + // Cause receive fifo to fill, causing an RX overrun + initial + begin + #126000; + @(posedge clk); + rx_ll_dst_rdy2 <= 0; + repeat (30) // Repeat of 14 fills the shortfifo, but works. 15 overflows + @(posedge clk); + rx_ll_dst_rdy2 <= 1; + end + + // Tests: Send and recv flow control, send and receive good packets, RX CRC err, RX_ER, RX overrun, TX underrun + // Still need to test: CRC errors on Pause Frames + + always @(posedge clk) + if(rx_ll_src_rdy2 & rx_ll_dst_rdy2) + begin + if(rx_ll_sof2 & ~rx_ll_eof2) + $display("RX-PKT-START %d",$time); + $display("RX-PKT SOF %d EOF %d ERR%d DAT %x",rx_ll_sof2,rx_ll_eof2,rx_ll_error2,rx_ll_data2); + if(rx_ll_eof2 & ~rx_ll_sof2) + $display("RX-PKT-END %d",$time); + end + +endmodule // simple_gemac_tb diff --git a/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_wrapper/simple_gemac_wrapper.build b/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_wrapper/simple_gemac_wrapper.build new file mode 100755 index 000000000..14e8500b3 --- /dev/null +++ b/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_wrapper/simple_gemac_wrapper.build @@ -0,0 +1 @@ +iverilog -Wimplict -Wportbind -y ../fifo/ -y ../models/ -y . -y miim -y ../control -y ../coregen/ -y ../control_lib/ -o simple_gemac_wrapper_tb simple_gemac_wrapper_tb.v diff --git a/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_wrapper/simple_gemac_wrapper_tb.v b/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_wrapper/simple_gemac_wrapper_tb.v new file mode 100644 index 000000000..b89589234 --- /dev/null +++ b/fpga/usrp3/lib/sim/simple_gemac/simple_gemac_wrapper/simple_gemac_wrapper_tb.v @@ -0,0 +1,213 @@ +// +// Copyright 2011 Ettus Research LLC +// Copyright 2018 Ettus Research, a National Instruments Company +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// + + + + +module simple_gemac_wrapper_tb; +`include "eth_tasks_f36.v" + + reg reset = 1; + initial #1000 reset = 0; + wire wb_rst = reset; + + reg eth_clk = 0; + always #50 eth_clk = ~eth_clk; + + reg wb_clk = 0; + always #173 wb_clk = ~wb_clk; + + reg sys_clk = 0; + always #77 sys_clk = ~ sys_clk; + + wire GMII_RX_DV, GMII_RX_ER, GMII_TX_EN, GMII_TX_ER, GMII_GTX_CLK; + wire [7:0] GMII_RXD, GMII_TXD; + + wire rx_valid, rx_error, rx_ack; + wire tx_ack, tx_valid, tx_error; + + wire [7:0] rx_data, tx_data; + + wire GMII_RX_CLK = GMII_GTX_CLK; + + reg [7:0] FORCE_DAT_ERR = 0; + reg FORCE_ERR = 0; + + // Loopback + assign GMII_RX_DV = GMII_TX_EN; + assign GMII_RX_ER = GMII_TX_ER | FORCE_ERR; + assign GMII_RXD = GMII_TXD ^ FORCE_DAT_ERR; + + + wire [31:0] wb_dat_o; + reg [31:0] wb_dat_i; + reg [7:0] wb_adr; + reg wb_stb=0, wb_cyc=0, wb_we=0; + wire wb_ack; + + reg [35:0] tx_f36_data=0; + reg tx_f36_src_rdy = 0; + wire tx_f36_dst_rdy; + wire [35:0] rx_f36_data; + wire rx_f36_src_rdy; + wire rx_f36_dst_rdy = 1; + + simple_gemac_wrapper simple_gemac_wrapper + (.clk125(eth_clk), .reset(reset), + .GMII_GTX_CLK(GMII_GTX_CLK), .GMII_TX_EN(GMII_TX_EN), + .GMII_TX_ER(GMII_TX_ER), .GMII_TXD(GMII_TXD), + .GMII_RX_CLK(GMII_RX_CLK), .GMII_RX_DV(GMII_RX_DV), + .GMII_RX_ER(GMII_RX_ER), .GMII_RXD(GMII_RXD), + + .sys_clk(sys_clk), .rx_f36_data(rx_f36_data), .rx_f36_src_rdy(rx_f36_src_rdy), .rx_f36_dst_rdy(rx_f36_dst_rdy), + .tx_f36_data(tx_f36_data), .tx_f36_src_rdy(tx_f36_src_rdy), .tx_f36_dst_rdy(tx_f36_dst_rdy), + + .wb_clk(wb_clk), .wb_rst(wb_rst), .wb_stb(wb_stb), .wb_cyc(wb_cyc), .wb_ack(wb_ack), .wb_we(wb_we), + .wb_adr(wb_adr), .wb_dat_i(wb_dat_i), .wb_dat_o(wb_dat_o), + + .mdio(), .mdc(), + .debug() ); + + initial $dumpfile("simple_gemac_wrapper_tb.vcd"); + initial $dumpvars(0,simple_gemac_wrapper_tb); + + integer i; + reg [7:0] pkt_rom[0:65535]; + reg [1023:0] ROMFile; + + initial + for (i=0;i<65536;i=i+1) + pkt_rom[i] <= 8'h0; + + initial + begin + @(negedge reset); + repeat (10) + @(posedge wb_clk); + WishboneWR(0,6'b111101); + WishboneWR(4,16'hA0B0); + WishboneWR(8,32'hC0D0_A1B1); + WishboneWR(12,16'h0000); + WishboneWR(16,32'h0000_0000); + + @(posedge eth_clk); + SendFlowCtrl(16'h0007); // Send flow control + @(posedge eth_clk); + #30000; + @(posedge eth_clk); + SendFlowCtrl(16'h0009); // Increase flow control before it expires + #10000; + @(posedge eth_clk); + SendFlowCtrl(16'h0000); // Cancel flow control before it expires + @(posedge eth_clk); + + repeat (1000) + @(posedge sys_clk); + SendPacket_to_fifo36(32'hA0B0C0D0,10); // This packet gets dropped by the filters + repeat (1000) + @(posedge sys_clk); + + SendPacket_to_fifo36(32'hAABBCCDD,100); // This packet gets dropped by the filters + repeat (10) + @(posedge sys_clk); +/* + SendPacketFromFile_f36(60,0,0); // The rest are valid packets + repeat (10) + @(posedge clk); + + SendPacketFromFile_f36(61,0,0); + repeat (10) + @(posedge clk); + SendPacketFromFile_f36(62,0,0); + repeat (10) + @(posedge clk); + SendPacketFromFile_f36(63,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_f36(64,0,0); + repeat (10) + @(posedge clk); + SendPacketFromFile_f36(59,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_f36(58,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_f36(100,0,0); + repeat (1) + @(posedge clk); + SendPacketFromFile_f36(200,150,30); // waiting 14 empties the fifo, 15 underruns + repeat (1) + @(posedge clk); + SendPacketFromFile_f36(100,0,30); + */ + #100000 $finish; + end + + // Force a CRC error + initial + begin + #90000; + @(posedge eth_clk); + FORCE_DAT_ERR <= 8'h10; + @(posedge eth_clk); + FORCE_DAT_ERR <= 8'h00; + end + + // Force an RX_ER error (i.e. link loss) + initial + begin + #116000; + @(posedge eth_clk); + FORCE_ERR <= 1; + @(posedge eth_clk); + FORCE_ERR <= 0; + end +/* + // Cause receive fifo to fill, causing an RX overrun + initial + begin + #126000; + @(posedge clk); + rx_ll_dst_rdy2 <= 0; + repeat (30) // Repeat of 14 fills the shortfifo, but works. 15 overflows + @(posedge clk); + rx_ll_dst_rdy2 <= 1; + end + */ + // Tests: Send and recv flow control, send and receive good packets, RX CRC err, RX_ER, RX overrun, TX underrun + // Still need to test: CRC errors on Pause Frames, MDIO, wishbone + + task WishboneWR; + input [7:0] adr; + input [31:0] value; + begin + wb_adr <= adr; + wb_dat_i <= value; + wb_stb <= 1; + wb_cyc <= 1; + wb_we <= 1; + while (~wb_ack) + @(posedge wb_clk); + @(posedge wb_clk); + wb_stb <= 0; + wb_cyc <= 0; + wb_we <= 0; + end + endtask // WishboneWR + /* + always @(posedge clk) + if(rx_ll_src_rdy2 & rx_ll_dst_rdy2) + begin + if(rx_ll_sof2 & ~rx_ll_eof2) + $display("RX-PKT-START %d",$time); + $display("RX-PKT SOF %d EOF %d ERR%d DAT %x",rx_ll_sof2,rx_ll_eof2,rx_ll_error2,rx_ll_data2); + if(rx_ll_eof2 & ~rx_ll_sof2) + $display("RX-PKT-END %d",$time); + end + */ +endmodule // simple_gemac_wrapper_tb |