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This commit is contained in:
felsabbagh3
2019-10-21 12:06:10 -04:00
parent 85004899bd
commit 8050419511
1 changed files with 64 additions and 64 deletions
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128
rtl/VX_warp_scheduler.v
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@@ -102,76 +102,76 @@ module VX_warp_scheduler (
always @(posedge clk or posedge reset) begin always @(posedge clk or posedge reset) begin
if (reset) begin if (reset) begin
warp_pcs[0] = (32'h80000000 - 4); warp_pcs[0] <= (32'h80000000 - 4);
start = 0; start <= 0;
warp_active[0] = 1; // Activating first warp warp_active[0] <= 1; // Activating first warp
visible_active[0] = 1; // Activating first warp visible_active[0] <= 1; // Activating first warp
thread_masks[0][0] = 1; // Activating first thread in first warp thread_masks[0][0] <= 1; // Activating first thread in first warp
end end else begin
// Wsapwning warps
// Wsapwning warps if (wspawn && found_wspawn) begin
if (wspawn && found_wspawn) begin warp_pcs[warp_to_wsapwn] <= wsapwn_pc;
warp_pcs[warp_to_wsapwn] <= wsapwn_pc; warp_active[warp_to_wsapwn] <= 1;
warp_active[warp_to_wsapwn] <= 1; visible_active[warp_to_wsapwn] <= 1;
visible_active[warp_to_wsapwn] <= 1; end
end // Halting warps
// Halting warps if (whalt) begin
if (whalt) begin warp_active[whalt_warp_num] <= 0;
warp_active[whalt_warp_num] <= 0; visible_active[whalt_warp_num] <= 0;
visible_active[whalt_warp_num] <= 0;
end
// Changing thread masks
if (ctm) begin
thread_masks[ctm_warp_num] <= ctm_mask;
warp_stalled[ctm_warp_num] <= 0;
end
// Stalling the scheduling of warps
if (wstall) begin
warp_stalled[wstall_warp_num] <= 1;
visible_active[wstall_warp_num] <= 0;
end
if (is_split) begin
warp_stalled[split_warp_num] <= 0;
thread_masks[split_warp_num] <= split_new_mask;
end
if (is_join) begin
if (!join_fall) begin
warp_pcs[join_warp_num] <= join_pc;
end end
thread_masks[join_warp_num] <= join_tm;
end
// Refilling active warps // Changing thread masks
if ((visible_active == 0) && !(stall || wstall || hazard || is_join)) begin if (ctm) begin
visible_active <= warp_active & (~warp_stalled); thread_masks[ctm_warp_num] <= ctm_mask;
end warp_stalled[ctm_warp_num] <= 0;
end
// First cycle // Stalling the scheduling of warps
if (start <= 2) begin if (wstall) begin
start <= 1; warp_stalled[wstall_warp_num] <= 1;
visible_active <= warp_active & (~warp_stalled); visible_active[wstall_warp_num] <= 0;
end end
// Don't change state if stall if (is_split) begin
if (!global_stall && real_schedule && (thread_mask != 0)) begin warp_stalled[split_warp_num] <= 0;
visible_active[warp_to_schedule] <= 0; thread_masks[split_warp_num] <= split_new_mask;
warp_pcs[warp_to_schedule] <= new_pc; end
end
// Jal if (is_join) begin
if (jal) begin if (!join_fall) begin
warp_pcs[jal_warp_num] <= jal_dest; warp_pcs[join_warp_num] <= join_pc;
warp_stalled[jal_warp_num] <= 0; end
end thread_masks[join_warp_num] <= join_tm;
end
// Branch // Refilling active warps
if (branch_valid) begin if ((visible_active == 0) && !(stall || wstall || hazard || is_join)) begin
if (branch_dir) warp_pcs[branch_warp_num] <= branch_dest; visible_active <= warp_active & (~warp_stalled);
warp_stalled[branch_warp_num] <= 0; end
// First cycle
if (start <= 2) begin
start <= 1;
visible_active <= warp_active & (~warp_stalled);
end
// Don't change state if stall
if (!global_stall && real_schedule && (thread_mask != 0)) begin
visible_active[warp_to_schedule] <= 0;
warp_pcs[warp_to_schedule] <= new_pc;
end
// Jal
if (jal) begin
warp_pcs[jal_warp_num] <= jal_dest;
warp_stalled[jal_warp_num] <= 0;
end
// Branch
if (branch_valid) begin
if (branch_dir) warp_pcs[branch_warp_num] <= branch_dest;
warp_stalled[branch_warp_num] <= 0;
end
end end
end end