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fix rtl gpr zero

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This commit is contained in:
Blaise Tine
2020-05-06 05:25:20 -04:00
parent 7e748e4e38
commit b1fdf0a947
16 changed files with 34529 additions and 78542 deletions
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34
hw/rtl/VX_gpr.v
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@@ -7,13 +7,18 @@ module VX_gpr (
VX_gpr_read_if gpr_read_if,
VX_wb_if writeback_if,
output reg[`NUM_THREADS-1:0][`NUM_GPRS-1:0] a_reg_data,
output reg[`NUM_THREADS-1:0][`NUM_GPRS-1:0] b_reg_data
output wire[`NUM_THREADS-1:0][`NUM_GPRS-1:0] a_reg_data,
output wire[`NUM_THREADS-1:0][`NUM_GPRS-1:0] b_reg_data
);
wire write_enable;
wire[`NUM_THREADS-1:0][`NUM_GPRS-1:0] a_reg_data_uqual;
wire[`NUM_THREADS-1:0][`NUM_GPRS-1:0] b_reg_data_uqual;
assign a_reg_data = (gpr_read_if.rs1 != 0) ? a_reg_data_uqual : 0;
assign b_reg_data = (gpr_read_if.rs2 != 0) ? b_reg_data_uqual : 0;
wire write_enable = valid_write_request && ((writeback_if.wb != 0));
`ifndef ASIC
assign write_enable = valid_write_request && ((writeback_if.wb != 0)) && (writeback_if.rd != 0);
VX_gpr_ram gpr_ram (
.we (write_enable),
@@ -24,16 +29,17 @@ module VX_gpr (
.raddr2(gpr_read_if.rs2),
.be (writeback_if.valid),
.wdata (writeback_if.data),
.q1 (a_reg_data),
.q2 (b_reg_data)
.q1 (a_reg_data_uqual),
.q2 (b_reg_data_uqual)
);
`else
assign write_enable = valid_write_request && ((writeback_if.wb != 0));
wire going_to_write = write_enable & (| writeback_if.wb_valid);
wire[`NUM_THREADS-1:0][`NUM_GPRS-1:0] write_bit_mask;
genvar i;
for (i = 0; i < `NUM_THREADS; i=i+1) begin
for (i = 0; i < `NUM_THREADS; i = i + 1) begin
wire local_write = write_enable & writeback_if.wb_valid[i];
assign write_bit_mask[i] = {`NUM_GPRS{~local_write}};
end
@@ -52,17 +58,17 @@ module VX_gpr (
`ifndef SYN
genvar j;
for (i = 0; i < `NUM_THREADS; i = i + 1) begin
for (j = 0; j < `NUM_GPRS; j=j+1) begin
assign a_reg_data[i][j] = ((temp_a[i][j] === 1'dx) || cena_1 )? 1'b0 : temp_a[i][j];
assign b_reg_data[i][j] = ((temp_b[i][j] === 1'dx) || cena_2) ? 1'b0 : temp_b[i][j];
for (j = 0; j < `NUM_GPRS; j = j + 1) begin
assign a_reg_data_uqual[i][j] = ((temp_a[i][j] === 1'dx) || cena_1 )? 1'b0 : temp_a[i][j];
assign b_reg_data_uqual[i][j] = ((temp_b[i][j] === 1'dx) || cena_2) ? 1'b0 : temp_b[i][j];
end
end
`else
assign a_reg_data = temp_a;
assign b_reg_data = temp_b;
assign a_reg_data_uqual = temp_a;
assign b_reg_data_uqual = temp_b;
`endif
wire[`NUM_THREADS-1:0][`NUM_GPRS-1:0] to_write = (writeback_if.rd != 0) ? writeback_if.write_data : 0;
wire[`NUM_THREADS-1:0][`NUM_GPRS-1:0] to_write = writeback_if.write_data;
for (i = 0; i < 'NT; i=i+4)
begin