[wr streamers] implemented snapshot of the statistis

it was hard to get fully coherent statistics, especially if they were changing fast (e.g. 250kHz in btrain). Setting snapshot bit to high copies at the same instant all the counters to separate registers. as long as snapshot bit is high, these registers are exposed to WB and SNMP. so one can read it as long as it takes and the data is still coherent.

[wr streamers] implemented snapshot of the statistis
it was hard to get fully coherent statistics, especially if they were changing fast (e.g. 250kHz in btrain). Setting snapshot bit to high copies at the same instant all the counters to separate registers. as long as snapshot bit is high, these registers are exposed to WB and SNMP. so one can read it as long as it takes and the data is still coherent.
cab82fab · Maciej Lipinski · d5a58554 · cab82fab · cab82fab
Commit cab82fab authored Jul 27, 2016 by Maciej Lipinski
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Showing with 145 additions and 33 deletions

streamers_pkg.vhd modules/wr_streamers/streamers_pkg.vhd +1 -0

xrtx_streamers_stats.vhd modules/wr_streamers/xrtx_streamers_stats.vhd +144 -33

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--- a/modules/wr_streamers/streamers_pkg.vhd
+++ b/modules/wr_streamers/streamers_pkg.vhd
@@ -90,6 +90,7 @@ package streamers_pkg is
      tm_tai_i               : in std_logic_vector(39 downto 0) := x"0000000000";
      tm_cycles_i            : in std_logic_vector(27 downto 0) := x"0000000";
      reset_stats_i          : in std_logic;
+      snapshot_ena_i         : in std_logic := '0';
      reset_time_tai_o       : out std_logic_vector(39 downto 0) := x"0000000000";
      reset_time_cycles_o    : out std_logic_vector(27 downto 0) := x"0000000";
      sent_frame_cnt_o       : out std_logic_vector(g_cnt_width-1 downto 0);

--- a/modules/wr_streamers/xrtx_streamers_stats.vhd
+++ b/modules/wr_streamers/xrtx_streamers_stats.vhd