From 5202bce32bd9157508ed48da37e114b7ade0ec70 Mon Sep 17 00:00:00 2001 From: Alejandro Soto Date: Wed, 25 Oct 2023 19:13:19 -0600 Subject: rtl/gfx: implement skid buffers --- rtl/gfx/fold_flow.sv | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'rtl/gfx/fold_flow.sv') diff --git a/rtl/gfx/fold_flow.sv b/rtl/gfx/fold_flow.sv index 718786e..1d9c0f2 100644 --- a/rtl/gfx/fold_flow.sv +++ b/rtl/gfx/fold_flow.sv @@ -15,17 +15,23 @@ module fold_flow feedback_last ); + logic skid_ready; index4 rounds[`FP_ADD_STAGES], last_round; - assign stall = out_valid && !out_ready; - assign in_ready = !stall && !feedback; - assign out_valid = last_round == `INDEX4_MAX; + assign in_ready = skid_ready && !feedback; assign feedback = last_round[1] ^ last_round[0]; assign feedback_last = last_round[1]; assign last_round = rounds[`FP_ADD_STAGES - 1]; + skid_flow skid + ( + .in_valid(last_round == `INDEX4_MAX), + .in_ready(skid_ready), + .* + ); + always_ff @(posedge clk or negedge rst_n) if (!rst_n) rounds[0] <= `INDEX4_MIN; -- cgit v1.2.3