round robin arbiter + auto buffered queue + fixed dcache arbiter

hw/rtl/libs/VX_priority_encoder.v

@@ -3,26 +3,20 @@
 module VX_priority_encoder #( 
     parameter N
 ) (
-    input  wire [N-1:0]             valids,
-    output wire [`LOG2UP(N)-1:0]    index,
-    output wire                     found
+    input  wire [N-1:0]         data_in,
+    output reg [`LOG2UP(N)-1:0] data_out,
+    output reg                  valid_out
 );
-    reg [`LOG2UP(N)-1:0] index_r;
-    reg found_r;
-
     integer i;
     always @(*) begin
-        index_r = 0;
-        found_r = 0;
-        for (i = `NUM_WARPS-1; i >= 0; i = i - 1) begin
-            if (valids[i]) begin
-                index_r = `NW_BITS'(i);
-                found_r = 1;
+        data_out = 0;
+        valid_out = 0;
+        for (i = N-1; i >= 0; i = i - 1) begin
+            if (data_in[i]) begin
+                data_out = `LOG2UP(N)'(i);
+                valid_out = 1;
             end
         end
     end
-
-    assign index = index_r;
-    assign found = found_r;
     
 endmodule