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fixed warp_sched lock bug

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This commit is contained in:
Blaise Tine
2020-05-28 08:52:20 -04:00
parent 98b98b1005
commit 611ceb000a
21 changed files with 85757 additions and 3601 deletions
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10
hw/rtl/VX_warp_sched.v
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@@ -60,7 +60,7 @@ module VX_warp_sched (
output wire scheduled_warp,
input wire[`NW_BITS-1:0] icache_stage_wid,
input wire[`NUM_THREADS-1:0] icache_stage_valids
input wire icache_stage_response
);
wire update_use_wspawn;
wire update_visible_active;
@@ -209,7 +209,7 @@ module VX_warp_sched (
// Branch
if (branch_valid) begin
if (branch_dir) warp_pcs[branch_warp_num] <= branch_dest;
if (branch_dir) warp_pcs[branch_warp_num] <= branch_dest;
warp_stalled[branch_warp_num] <= 0;
end
@@ -218,7 +218,7 @@ module VX_warp_sched (
warp_lock[warp_num] <= 1'b1;
// warp_lock <= {`NUM_WARPS{1'b1}};
end
if ((| icache_stage_valids) && !stall) begin
if (icache_stage_response) begin
warp_lock[icache_stage_wid] <= 1'b0;
// warp_lock <= {`NUM_WARPS{1'b0}};
end
@@ -251,7 +251,7 @@ module VX_warp_sched (
assign total_barrier_stall = barrier_stall_mask[0] | barrier_stall_mask[1] | barrier_stall_mask[2] | barrier_stall_mask[3];
assign update_visible_active = (count_visible_active < 1) && !(stall || wstall_this_cycle || hazard || is_join);
assign update_visible_active = (0 == count_visible_active) && !(stall || wstall_this_cycle || hazard || is_join);
wire [(1+32+`NUM_THREADS-1):0] q1 = {1'b1, 32'b0, thread_masks[split_warp_num]};
wire [(1+32+`NUM_THREADS-1):0] q2 = {1'b0, split_save_pc, split_later_mask};
@@ -305,7 +305,7 @@ module VX_warp_sched (
assign new_pc = warp_pc + 4;
assign use_active = (count_visible_active < 1) ? (warp_active & (~warp_stalled) & (~total_barrier_stall) & (~warp_lock)) : visible_active;
assign use_active = (count_visible_active != 0) ? visible_active : (warp_active & (~warp_stalled) & (~total_barrier_stall) & (~warp_lock));
// Choosing a warp to schedule
VX_priority_encoder #(