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White Rabbit core collection
Commit e0d5b5ba authored by Tomasz Wlostowski's avatar Tomasz Wlostowski Committed by Maciej Lipinski
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wr_streamers: correct calculation of delay in fixed latency tb

parent 23901cd9
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Showing with 31 additions and 16 deletions
testbench/wr_streamers/streamers-only-fixed-latency/main.sv
View file @ e0d5b5ba
...@@ -71,7 +71,7 @@ module main; ...@@ -71,7 +71,7 @@ module main;
// Size of data record to be used by the streamers - in our case, a 64-bit // Size of data record to be used by the streamers - in our case, a 64-bit
// word. // word.
parameter g_record_size = 64; parameter g_record_size = 64;
parameter g_wr_cycles_per_second = 10000; parameter g_wr_cycles_per_second = 625000;
...@@ -295,6 +295,8 @@ module main; ...@@ -295,6 +295,8 @@ module main;
// Got a record? Compare it against the copy stored in queue. // Got a record? Compare it against the copy stored in queue.
automatic t_queue_entry qe = queue.pop_front(); automatic t_queue_entry qe = queue.pop_front();
automatic time ts_rx = $time, delta; automatic time ts_rx = $time, delta;
const time c_pipeline_delay = 64ns;
if( rx_streamer_data != qe.data ) if( rx_streamer_data != qe.data )
begin begin
...@@ -302,14 +304,12 @@ module main; ...@@ -302,14 +304,12 @@ module main;
end end
//$display("Tx ts %t rx ts %t", qe.ts, ts_rx); // $display("Tx ts %t rx ts %t", qe.ts, ts_rx);
delta = ts_rx - qe.ts - rx_streamer_cfg.fixed_latency * 8ns;
delta = ts_rx - qe.ts - rx_streamer_cfg.fixed_latency * 16ns - c_pipeline_delay;
$display("delta: %t", delta); $display("delta: %.3f us %t", real'(delta) / real'(1us), delta );
end // if (rx_streamer_dvalid) end // if (rx_streamer_dvalid)
end // else: !if(!rst) end // else: !if(!rst)
......
testbench/wr_streamers/streamers-only-fixed-latency/wave.do
View file @ e0d5b5ba
...@@ -98,7 +98,6 @@ add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_data_ ...@@ -98,7 +98,6 @@ add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_data_
add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_last_i add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_last_i
add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_sync_i add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_sync_i
add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_target_ts_en_i add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_target_ts_en_i
add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_target_ts_i
add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_valid_i add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_valid_i
add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_drop_i add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_drop_i
add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_accept_i add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/d_accept_i
...@@ -133,22 +132,38 @@ add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/delay_m ...@@ -133,22 +132,38 @@ add wave -noupdate -group FixDelay /main/U_RX_Streamer/U_FixLatencyDelay/delay_m
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/clk_i add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/clk_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/rst_n_i add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/rst_n_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/arm_i add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/arm_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/ts_origin_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/ts_latency_i add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/ts_latency_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_time_valid_i add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_time_valid_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_tai_i add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_tai_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_cycles_i add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_cycles_i
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/match_o add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/match_o
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/miss_o
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/ts_adjusted
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/target_cycles
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/delta
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/arm_d
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/armed
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_cycles_scaled add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/tm_cycles_scaled
add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/ts_latency_scaled add wave -noupdate -expand -group TSCompare /main/U_RX_Streamer/U_FixLatencyDelay/U_Compare/ts_latency_scaled
add wave -noupdate -expand -group Top /main/clk_ref
add wave -noupdate -expand -group Top /main/clk_sys
add wave -noupdate -expand -group Top /main/rst
add wave -noupdate -expand -group Top /main/tx_streamer_dvalid
add wave -noupdate -expand -group Top /main/tx_streamer_data
add wave -noupdate -expand -group Top /main/tx_streamer_flush
add wave -noupdate -expand -group Top /main/tx_streamer_last
add wave -noupdate -expand -group Top /main/tx_streamer_dreq
add wave -noupdate -expand -group Top /main/tx_streamer_sync
add wave -noupdate -expand -group Top /main/rx_streamer_dreq
add wave -noupdate -expand -group Top /main/rx_streamer_data
add wave -noupdate -expand -group Top /main/rx_streamer_dvalid
add wave -noupdate -expand -group Top /main/rx_streamer_lost
add wave -noupdate -expand -group Top /main/rx_latency
add wave -noupdate -expand -group Top /main/rx_latency_valid
add wave -noupdate -expand -group Top /main/tm_cycles
add wave -noupdate -expand -group Top /main/tm_tai
add wave -noupdate -expand -group Top /main/tx_counter
add wave -noupdate -expand -group Top /main/rx_streamer_cfg
add wave -noupdate -expand -group Top /main/tx_streamer_cfg
add wave -noupdate -expand -group Top /main/src_out
add wave -noupdate -expand -group Top /main/src_in
add wave -noupdate -expand -group Top /main/tx_delay_count
TreeUpdate [SetDefaultTree] TreeUpdate [SetDefaultTree]
WaveRestoreCursors {{Cursor 1} {155661017 ps} 0} WaveRestoreCursors {{Cursor 1} {2269068 ps} 0}
configure wave -namecolwidth 191 configure wave -namecolwidth 191
configure wave -valuecolwidth 152 configure wave -valuecolwidth 152
configure wave -justifyvalue left configure wave -justifyvalue left
...@@ -163,4 +178,4 @@ configure wave -griddelta 40 ...@@ -163,4 +178,4 @@ configure wave -griddelta 40
configure wave -timeline 0 configure wave -timeline 0
configure wave -timelineunits ns configure wave -timelineunits ns
update update
WaveRestoreZoom {0 ps} {672 us} WaveRestoreZoom {0 ps} {10500 ns}
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