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Increase flow control credit threshold for controlling the transmission of posted and non-posted requests in UltraScale shim

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich 2023-05-10 14:51:36 -07:00
parent 6591849fe8
commit 1a4692bf17
1 changed files with 2 additions and 2 deletions
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4
rtl/pcie_us_if_rq.v
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@ -869,8 +869,8 @@ end
always @(posedge clk) begin always @(posedge clk) begin
max_payload_size_fc_reg <= 9'd8 << (max_payload_size > 5 ? 5 : max_payload_size); max_payload_size_fc_reg <= 9'd8 << (max_payload_size > 5 ? 5 : max_payload_size);
have_p_credit_reg <= (tx_fc_ph_av > 4) && (tx_fc_pd_av > (max_payload_size_fc_reg << 1)); have_p_credit_reg <= (tx_fc_ph_av > 8) && (tx_fc_pd_av > (max_payload_size_fc_reg << 1));
have_np_credit_reg <= tx_fc_nph_av > 4; have_np_credit_reg <= tx_fc_nph_av > 8;
frame_reg <= frame_next; frame_reg <= frame_next;
tlp_hdr1_reg <= tlp_hdr1_next; tlp_hdr1_reg <= tlp_hdr1_next;