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writeback clean up

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Eric Matthews 2021-04-04 12:43:09 -07:00
parent e8cb1c757b
commit 9b50ea3019
1 changed files with 15 additions and 14 deletions
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29
core/writeback.sv
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@ -77,23 +77,24 @@ module writeback
//Iterating through all commit ports:
// Search for complete units (in fixed unit order)
// Assign to a commit port, mask that unit and commit port
generate for (i = 0; i < NUM_WB_GROUPS; i++) begin
priority_encoder
#(.WIDTH(NUM_WB_UNITS_GROUP[i]))
unit_done_encoder
(
.priority_vector (unit_done[i][NUM_WB_UNITS_GROUP[i]-1 : 0]),
.encoded_result (unit_sel[i][NUM_WB_UNITS_GROUP[i] == 1 ? 0 : ($clog2(NUM_WB_UNITS_GROUP[i])-1) : 0])
);
assign wb_packet[i].valid = |unit_done[i];
assign wb_packet [i].id = unit_instruction_id[i][unit_sel[i]];
assign wb_packet[i].data = unit_rd[i][unit_sel[i]];
end endgenerate
always_comb begin
for (int i = 0; i < NUM_WB_GROUPS; i++) begin
unit_ack[i] = '{default: 0};
wb_packet[i].valid = 0;
unit_sel[i] = WB_UNITS_WIDTH'(NUM_WB_UNITS_GROUP[i]-1);
for (int j = 0; j < (NUM_WB_UNITS_GROUP[i] - 1); j++) begin
if (unit_done[i][j]) begin
unit_sel[i] = WB_UNITS_WIDTH'(j);
break;
end
end
//ID and data muxes
wb_packet[i].valid = unit_done[i][unit_sel[i]];
wb_packet[i].id = unit_instruction_id[i][unit_sel[i]];
wb_packet[i].data = unit_rd[i][unit_sel[i]];
unit_ack[i] = '0;
unit_ack[i][unit_sel[i]] = wb_packet[i].valid;
end
end
end
////////////////////////////////////////////////////