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integer reduction unit

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This commit is contained in:
joshua
2024-03-06 01:39:17 -08:00
parent 5f2b10b8a6
commit beb3dce46d
7 changed files with 587 additions and 10 deletions
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45
hw/rtl/core/VX_alu_unit.sv
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@@ -33,7 +33,7 @@ module VX_alu_unit #(
localparam PID_BITS = `CLOG2(`NUM_THREADS / NUM_LANES);
localparam PID_WIDTH = `UP(PID_BITS);
localparam RSP_ARB_DATAW= `UUID_WIDTH + `NW_WIDTH + NUM_LANES + `XLEN + `NR_BITS + 1 + NUM_LANES * `XLEN + PID_WIDTH + 1 + 1;
localparam RSP_ARB_SIZE = 1 + `EXT_M_ENABLED;
localparam RSP_ARB_SIZE = 2 + `EXT_M_ENABLED;
localparam PARTIAL_BW = (BLOCK_SIZE != `ISSUE_WIDTH) || (NUM_LANES != `NUM_THREADS);
VX_execute_if #(
@@ -60,12 +60,13 @@ module VX_alu_unit #(
for (genvar block_idx = 0; block_idx < BLOCK_SIZE; ++block_idx) begin
wire is_muldiv_op;
wire is_reduce_op;
VX_execute_if #(
.NUM_LANES (NUM_LANES)
) int_execute_if();
assign int_execute_if.valid = execute_if[block_idx].valid && ~is_muldiv_op;
assign int_execute_if.valid = execute_if[block_idx].valid && ~is_muldiv_op && ~is_reduce_op;
assign int_execute_if.data = execute_if[block_idx].data;
VX_commit_if #(
@@ -86,6 +87,31 @@ module VX_alu_unit #(
.commit_if (int_commit_if)
);
assign is_reduce_op = `INST_ALU_IS_RED(execute_if[block_idx].data.op_mod);
VX_execute_if #(
.NUM_LANES (NUM_LANES)
) red_execute_if();
assign red_execute_if.valid = execute_if[block_idx].valid && is_reduce_op;
assign red_execute_if.data = execute_if[block_idx].data;
VX_commit_if #(
.NUM_LANES (NUM_LANES)
) red_commit_if();
`RESET_RELAY(red_reset, reset);
VX_reduce_unit #(
.CORE_ID(CORE_ID),
.NUM_LANES(NUM_LANES)
) reduce_unit (
.clk(clk),
.reset(red_reset),
.execute_if(red_execute_if),
.commit_if(red_commit_if)
);
`ifdef EXT_M_ENABLE
assign is_muldiv_op = `INST_ALU_IS_M(execute_if[block_idx].data.op_mod);
@@ -96,7 +122,7 @@ module VX_alu_unit #(
.NUM_LANES (NUM_LANES)
) mdv_execute_if();
assign mdv_execute_if.valid = execute_if[block_idx].valid && is_muldiv_op;
assign mdv_execute_if.valid = execute_if[block_idx].valid && is_muldiv_op && ~is_reduce_op;
assign mdv_execute_if.data = execute_if[block_idx].data;
VX_commit_if #(
@@ -113,12 +139,12 @@ module VX_alu_unit #(
.commit_if (mdv_commit_if)
);
assign execute_if[block_idx].ready = is_muldiv_op ? mdv_execute_if.ready : int_execute_if.ready;
assign execute_if[block_idx].ready = is_reduce_op ? red_execute_if.ready : (is_muldiv_op ? mdv_execute_if.ready : int_execute_if.ready);
`else
assign is_muldiv_op = 0;
assign execute_if[block_idx].ready = int_execute_if.ready;
assign execute_if[block_idx].ready = is_reduce_op ? red_execute_if.ready : int_execute_if.ready;
`endif
@@ -135,19 +161,22 @@ module VX_alu_unit #(
`ifdef EXT_M_ENABLE
mdv_commit_if.valid,
`endif
int_commit_if.valid
int_commit_if.valid,
red_commit_if.valid
}),
.ready_in ({
`ifdef EXT_M_ENABLE
mdv_commit_if.ready,
`endif
int_commit_if.ready
int_commit_if.ready,
red_commit_if.ready
}),
.data_in ({
`ifdef EXT_M_ENABLE
mdv_commit_if.data,
`endif
int_commit_if.data
int_commit_if.data,
red_commit_if.data
}),
.data_out (commit_block_if[block_idx].data),
.valid_out (commit_block_if[block_idx].valid),