rtl(axi_to_mem): fix comb loop on b_ready/w_ready and AR starvation - #450
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rtl(axi_to_mem): fix comb loop on b_ready/w_ready and AR starvation#450devtyagi3909 wants to merge 1 commit into
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Signed-off-by: Dev Tyagi <devtyagi3909@gmail.com>
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Fixes #287 by adding a spill_register on the B and R channels, breaking the combinatorial loops from b_ready to w_ready and from r_ready to ar_ready which can occur when this module is used downstream of modules with shared FIFOs like axi_dw_downsizer. Fixes #288 by removing the strict arbitration clause that prioritized single-beat writes over multi-beat reads regardless of QoS. Falling back to the ongoing burst or round robin scheduling logic prevents AR starvation from continuous write requests while still respecting AXI constraints.