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This commit is contained in:
felsabbagh3
2019-05-18 23:42:55 +04:00
parent 8995267cd3
commit d7afef04a9
40 changed files with 2642 additions and 10382 deletions
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202
rtl/VX_fetch.v
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@@ -29,7 +29,8 @@ module VX_fetch (
output wire[`NW_M1:0] out_warp_num,
output wire[31:0] out_curr_PC,
output wire out_valid[`NT_M1:0],
output wire out_ebreak
output wire out_ebreak,
output wire[`NW_M1:0] out_which_wspawn
);
reg stall;
@@ -37,108 +38,161 @@ module VX_fetch (
reg[`NW_M1:0] warp_num;
reg[`NW_M1:0] warp_state;
reg[`NW_M1:0] warp_count;
reg[31:0] num_ecalls;
initial begin
warp_num = 0;
warp_state = 0;
num_ecalls = 0;
warp_count = 1;
end
always @(posedge clk) begin
if (in_ebreak) begin
num_ecalls <= num_ecalls + 1;
$display("--------> New num_ecalls = %h", num_ecalls+1);
end
end
wire add_warp = in_wspawn && !in_ebreak && !in_clone_stall;
wire remove_warp = in_ebreak && !in_wspawn && !in_clone_stall;
always @(posedge clk or posedge reset) begin
if (reset || (warp_num == warp_state) || remove_warp || add_warp) begin
if (reset || (warp_num >= warp_state) || remove_warp || add_warp) begin
warp_num <= 0;
`ifndef ONLY
end else if (!warp_glob_valid[warp_num+1]) begin
$display("Skipping one");
warp_num <= warp_num + 2;
`endif
end else begin
warp_num <= warp_num + 1;
end
if (add_warp) begin
// $display("Adding a new warp %h", warp_state);
warp_state <= warp_state + 1;
end else if (remove_warp) begin
// $display("Removing a warp %h", warp_state);
warp_state <= warp_state - 1;
warp_count <= warp_count + 1;
$display("Adding a new warp %h", warp_state+1);
end else if (remove_warp) begin // No removing, just invalidating
warp_count <= warp_count - 1;
$display("Removing a warp %h %h", in_decode_warp_num, warp_count);
if (warp_count == 2) begin
$display("&&&&&&&&&&&&& STATE 0");
warp_state <= 0;
end
end
end
assign out_ebreak = (warp_state == 0) && in_ebreak;
assign out_ebreak = (in_decode_warp_num == 0) && in_ebreak;
assign stall = in_clone_stall || in_branch_stall || in_fwd_stall || in_branch_stall_exe || in_interrupt || in_freeze || in_debug;
assign out_which_wspawn = (warp_state+1);
`ifdef ONLY
wire warp_zero_change_mask = in_change_mask && (in_decode_warp_num == 0);
wire warp_zero_jal = in_jal && (in_memory_warp_num == 0);
wire warp_zero_branch = in_branch_dir && (in_memory_warp_num == 0);
wire warp_zero_stall = stall || (warp_num != 0);
wire warp_zero_wspawn = (0 == 0) ? 0 : (in_wspawn && ((warp_state+1) == 0));
wire[31:0] warp_zero_wspawn_pc = in_wspawn_pc;
wire warp_zero_remove = remove_warp && (in_decode_warp_num == 0);
always @(*) begin : proc_
if (warp_zero_remove) $display("4Removing warp: %h", 0);
end
VX_warp VX_Warp(
.clk (clk),
.reset (reset),
.stall (warp_zero_stall),
.remove (warp_zero_remove),
.in_thread_mask(in_thread_mask),
.in_change_mask(warp_zero_change_mask),
.in_jal (warp_zero_jal),
.in_jal_dest (in_jal_dest),
.in_branch_dir (warp_zero_branch),
.in_branch_dest(in_branch_dest),
.in_wspawn (warp_zero_wspawn),
.in_wspawn_pc (warp_zero_wspawn_pc),
.out_PC (out_PC),
.out_valid (out_valid)
);
`else
wire[31:0] warp_glob_pc[`NW-1:0];
wire warp_glob_valid[`NW-1:0][`NT_M1:0];
genvar cur_warp;
generate
for (cur_warp = 0; cur_warp < `NW; cur_warp = cur_warp + 1)
begin
wire warp_zero_change_mask = in_change_mask && (in_decode_warp_num == cur_warp);
wire warp_zero_jal = in_jal && (in_memory_warp_num == cur_warp);
wire warp_zero_branch = in_branch_dir && (in_memory_warp_num == cur_warp);
wire warp_zero_stall = stall || (warp_num != cur_warp);
wire warp_zero_wspawn = (cur_warp == 0) ? 0 : (in_wspawn && ((warp_state+1) == cur_warp));
wire[31:0] warp_zero_wspawn_pc = in_wspawn_pc;
wire warp_zero_remove = remove_warp && (in_decode_warp_num == cur_warp);
always @(*) begin : proc_
if (warp_zero_remove) $display("4Removing warp: %h", cur_warp);
end
VX_warp VX_Warp(
.clk (clk),
.reset (reset),
.stall (warp_zero_stall),
.remove (warp_zero_remove),
.in_thread_mask(in_thread_mask),
.in_change_mask(warp_zero_change_mask),
.in_jal (warp_zero_jal),
.in_jal_dest (in_jal_dest),
.in_branch_dir (warp_zero_branch),
.in_branch_dest(in_branch_dest),
.in_wspawn (warp_zero_wspawn),
.in_wspawn_pc (warp_zero_wspawn_pc),
.out_PC (warp_glob_pc[cur_warp]),
.out_valid (warp_glob_valid[cur_warp])
);
end
endgenerate
wire warp_zero_change_mask = in_change_mask && (in_decode_warp_num == 0);
wire warp_zero_jal = in_jal && (in_memory_warp_num == 0);
wire warp_zero_branch = in_branch_dir && (in_memory_warp_num == 0);
wire warp_zero_stall = stall || (warp_num == 1);
wire warp_zero_wspawn = 0;
wire[31:0] warp_zero_wspawn_pc = 32'h0;
reg[31:0] out_PC_var;
reg out_valid_var[`NT_M1:0];
wire[31:0] warp_zero_pc;
wire warp_zero_valid[`NT_M1:0];
VX_warp VX_Warp_zero(
.clk (clk),
.reset (reset),
.stall (warp_zero_stall),
.in_thread_mask(in_thread_mask),
.in_change_mask(warp_zero_change_mask),
.in_jal (warp_zero_jal),
.in_jal_dest (in_jal_dest),
.in_branch_dir (warp_zero_branch),
.in_branch_dest(in_branch_dest),
.in_wspawn (warp_zero_wspawn),
.in_wspawn_pc (warp_zero_wspawn_pc),
.out_PC (warp_zero_pc),
.out_valid (warp_zero_valid)
);
always @(*) begin : help
integer g;
integer h;
for (g = 0; g < `NW; g = g + 1)
begin
if (warp_num == g[`NW_M1:0])
begin
out_PC_var = warp_glob_pc[g][31:0];
for (h = 0; h < `NT; h = h + 1) out_valid_var[h] = warp_glob_valid[g][h];
end
end
end
assign out_PC = out_PC_var;
assign out_valid = out_valid_var;
always @(*) begin
if (out_valid[0]) begin
$display("[%d] %h #%b#",out_warp_num, out_PC, out_valid);
end
end
`endif
wire warp_one_change_mask = in_change_mask && (in_decode_warp_num == 1);
wire warp_one_jal = in_jal && (in_memory_warp_num == 1);
wire warp_one_branch = in_branch_dir && (in_memory_warp_num == 1);
wire warp_one_stall = stall || (warp_num == 0);
wire[31:0] warp_one_pc;
wire warp_one_valid[`NT_M1:0];
VX_warp VX_Warp_one(
.clk (clk),
.reset (reset),
.stall (warp_one_stall),
.in_thread_mask(in_thread_mask),
.in_change_mask(warp_one_change_mask),
.in_jal (warp_one_jal),
.in_jal_dest (in_jal_dest),
.in_branch_dir (warp_one_branch),
.in_branch_dest(in_branch_dest),
.in_wspawn (in_wspawn),
.in_wspawn_pc (in_wspawn_pc),
.out_PC (warp_one_pc),
.out_valid (warp_one_valid)
);
// always @(*) begin
// if (in_wspawn) begin
// $display("Spawning a warp @ %h",in_wspawn_pc);
// end
// end
// always @(posedge clk) begin
// $display("curr warp: %h Threads:%d%d PC: %h", warp_num, out_valid[0],out_valid[1], out_PC);
// end
// always @(*) begin
// if (warp_num == 1) begin
// $display("Going to PC: %h", warp_one_pc);
// end
// end
assign out_PC = (warp_num == 0) ? warp_zero_pc : warp_one_pc;
assign out_valid = (warp_num == 0) ? warp_zero_valid : warp_one_valid;
// always @(*) begin
// $display("FETCH PC: %h (%h, %h, %h)",delete, delete, in_jal_dest, in_branch_dest);
// end
assign out_curr_PC = out_PC;