From 317389b7897ff31500ce80e554fa68f48287e372 Mon Sep 17 00:00:00 2001
From: Eric Kooistra <kooistra@astron.nl>
Date: Tue, 29 Apr 2025 11:02:31 +0200
Subject: [PATCH] Limit dump_start_page and dump_nof_pages to fit
nof_pages_in_buffer.
---
.../lofar2/libraries/sdp/src/vhdl/sdp_tbuf_reader.vhd | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_tbuf_reader.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_tbuf_reader.vhd
index f417a36f52..df2f73a7d7 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_tbuf_reader.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_tbuf_reader.vhd
@@ -337,9 +337,15 @@ begin
v.dump_start_rsn := reg_dump_start_rsn_rw;
v.dump_start_page := reg_dump_start_page_rw;
if v.dump_start_page >= c_nof_pages_in_buffer then
+ -- Force to recovery value within buffer range, this will lead to read RSN errors due to mismatch with
+ -- dump_start_rsn.
v.dump_start_page := 0;
end if;
v.dump_nof_pages := reg_dump_nof_pages_rw;
+ if v.dump_nof_pages >= c_nof_pages_in_buffer then
+ -- Limit to buffer size
+ v.dump_nof_pages := c_nof_pages_in_buffer;
+ end if;
if dump_en = '1' then
v.latency_cnt := c_start_latency;
v.fsm := s_dump_start;
--
GitLab