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This commit is contained in:
Blaise Tine
2020-04-21 03:19:47 -04:00
parent 43a8bf4326
commit d85c0af5d6
75 changed files with 4388 additions and 4382 deletions
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134
hw/rtl/VX_warp.v
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@@ -2,86 +2,86 @@
module VX_warp (
input wire clk,
input wire reset,
input wire stall,
input wire remove,
input wire[`NUM_THREADS-1:0] thread_mask,
input wire change_mask,
input wire jal,
input wire[31:0] jal_dest,
input wire branch_dir,
input wire[31:0] branch_dest,
input wire wspawn,
input wire[31:0] wspawn_pc,
input wire clk,
input wire reset,
input wire stall,
input wire remove,
input wire[`NUM_THREADS-1:0] thread_mask,
input wire change_mask,
input wire jal,
input wire[31:0] jal_dest,
input wire branch_dir,
input wire[31:0] branch_dest,
input wire wspawn,
input wire[31:0] wspawn_pc,
output wire[31:0] PC,
output wire[`NUM_THREADS-1:0] valid
output wire[31:0] PC,
output wire[`NUM_THREADS-1:0] valid
);
reg[31:0] real_PC;
logic [31:0] temp_PC;
logic [31:0] use_PC;
reg[`NUM_THREADS-1:0] valid;
reg[31:0] real_PC;
logic [31:0] temp_PC;
logic [31:0] use_PC;
reg[`NUM_THREADS-1:0] valid;
reg[`NUM_THREADS-1:0] valid_zero;
reg[`NUM_THREADS-1:0] valid_zero;
integer ini_cur_th = 0;
initial begin
real_PC = 0;
for (ini_cur_th = 1; ini_cur_th < `NUM_THREADS; ini_cur_th=ini_cur_th+1) begin
valid[ini_cur_th] = 0; // Thread 1 active
valid_zero[ini_cur_th] = 0;
end
valid[0] = 1;
valid_zero[0] = 0;
end
integer ini_cur_th = 0;
initial begin
real_PC = 0;
for (ini_cur_th = 1; ini_cur_th < `NUM_THREADS; ini_cur_th=ini_cur_th+1) begin
valid[ini_cur_th] = 0; // Thread 1 active
valid_zero[ini_cur_th] = 0;
end
valid[0] = 1;
valid_zero[0] = 0;
end
always @(posedge clk) begin
if (remove) begin
valid <= valid_zero;
end else if (change_mask) begin
valid <= thread_mask;
end
end
always @(posedge clk) begin
if (remove) begin
valid <= valid_zero;
end else if (change_mask) begin
valid <= thread_mask;
end
end
genvar out_cur_th;
generate
for (out_cur_th = 0; out_cur_th < `NUM_THREADS; out_cur_th = out_cur_th+1) begin : valid_assign
assign valid[out_cur_th] = change_mask ? thread_mask[out_cur_th] : stall ? 1'b0 : valid[out_cur_th];
end
endgenerate
genvar out_cur_th;
generate
for (out_cur_th = 0; out_cur_th < `NUM_THREADS; out_cur_th = out_cur_th+1) begin : valid_assign
assign valid[out_cur_th] = change_mask ? thread_mask[out_cur_th] : stall ? 1'b0 : valid[out_cur_th];
end
endgenerate
always @(*) begin
if (jal == 1'b1) begin
temp_PC = jal_dest;
// $display("LINKING TO %h", temp_PC);
end else if (branch_dir == 1'b1) begin
temp_PC = branch_dest;
end else begin
temp_PC = real_PC;
end
end
always @(*) begin
if (jal == 1'b1) begin
temp_PC = jal_dest;
// $display("LINKING TO %h", temp_PC);
end else if (branch_dir == 1'b1) begin
temp_PC = branch_dest;
end else begin
temp_PC = real_PC;
end
end
assign use_PC = temp_PC;
assign PC = temp_PC;
assign use_PC = temp_PC;
assign PC = temp_PC;
always @(posedge clk) begin
if (reset) begin
real_PC <= 0;
end else if (wspawn == 1'b1) begin
// $display("Inside warp ***** Spawn @ %H",wspawn_pc);
real_PC <= wspawn_pc;
end else if (!stall) begin
real_PC <= use_PC + 32'h4;
end else begin
real_PC <= use_PC;
end
always @(posedge clk) begin
if (reset) begin
real_PC <= 0;
end else if (wspawn == 1'b1) begin
// $display("Inside warp ***** Spawn @ %H",wspawn_pc);
real_PC <= wspawn_pc;
end else if (!stall) begin
real_PC <= use_PC + 32'h4;
end else begin
real_PC <= use_PC;
end
end
end
endmodule