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fair arbiter optimization

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Blaise Tine 2024-08-10 22:11:49 -07:00
parent 32a882e26f
commit 8fb73b6da7
1 changed files with 3 additions and 4 deletions
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7
hw/rtl/libs/VX_fair_arbiter.sv
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@ -40,15 +40,14 @@ module VX_fair_arbiter #(
reg [NUM_REQS-1:0] reqs_mask;
wire [NUM_REQS-1:0] requests_rem = requests & reqs_mask;
wire rem_valid = (| requests_rem);
wire [NUM_REQS-1:0] requests_qual = rem_valid ? requests_rem : requests;
wire [NUM_REQS-1:0] masked_reqs = requests & reqs_mask;
wire [NUM_REQS-1:0] requests_qual = (| masked_reqs) ? masked_reqs : requests;
always @(posedge clk) begin
if (reset) begin
reqs_mask <= '1;
end else if (grant_valid && grant_ready) begin
reqs_mask <= rem_valid ? (reqs_mask & ~grant_onehot) : ~grant_onehot;
reqs_mask <= (| reqs_mask) ? (reqs_mask & ~grant_onehot) : ~grant_onehot;
end
end