hdl: fix L2P DMA FIFO underflow during last packet

This bug was not affecting the design, as it would read once from an empty FIFO only after the transfer was done. Signed-off-by: Dimitris Lampridis <dimitris.lampridis@cern.ch>

hdl: fix L2P DMA FIFO underflow during last packet
This bug was not affecting the design, as it would read once from an empty FIFO only after the transfer was done. Signed-off-by: Dimitris Lampridis <dimitris.lampridis@cern.ch>
593be77a · Dimitris Lampridis · fabf9a18 · 593be77a
Commit 593be77a authored Sep 29, 2020 by Dimitris Lampridis
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l2p_dma_master.vhd hdl/rtl/l2p_dma_master.vhd +1 -1

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--- a/hdl/rtl/l2p_dma_master.vhd
+++ b/hdl/rtl/l2p_dma_master.vhd
@@ -300,8 +300,8 @@ begin
              -- Detect end of transfer
              if dma_packet_len = 1 then
                l2p_fsm_dframe <= '0';
+                data_fifo_rd   <= '0';
                if dma_last_packet = '0' then
-                  data_fifo_rd          <= '0';
                  l2p_dma_current_state <= L2P_NEXT;
                else
                  dma_total_len         <= (others => '0');