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removing pipeline additional registers

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This commit is contained in:
Blaise Tine
2020-08-25 14:02:35 -07:00
parent efbe4a07ef
commit b211b29670
9 changed files with 74 additions and 91 deletions
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33
hw/rtl/VX_gpu_unit.v
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@@ -13,6 +13,9 @@ module VX_gpu_unit #(
VX_warp_ctl_if warp_ctl_if,
VX_exu_to_cmt_if gpu_commit_if
);
`UNUSED_VAR (clk)
`UNUSED_VAR (reset)
gpu_tmc_t tmc;
gpu_wspawn_t wspawn;
gpu_barrier_t barrier;
@@ -58,7 +61,7 @@ module VX_gpu_unit #(
assign split.diverged = (| split_then_mask) && (| split_else_mask);
assign split.then_mask = split_then_mask;
assign split.else_mask = split_else_mask;
assign split.pc = gpu_req_if.curr_PC + 4;
assign split.pc = gpu_req_if.next_PC;
// barrier
@@ -68,23 +71,21 @@ module VX_gpu_unit #(
// output
wire stall = ~gpu_commit_if.ready && gpu_commit_if.valid;
assign warp_ctl_if.valid = gpu_req_if.valid && gpu_commit_if.ready;
assign warp_ctl_if.wid = gpu_commit_if.wid;
assign warp_ctl_if.tmc = tmc;
assign warp_ctl_if.wspawn = wspawn;
assign warp_ctl_if.split = split;
assign warp_ctl_if.barrier = barrier;
VX_generic_register #(
.N(1 + `NW_BITS + `NUM_THREADS + 32 + `NR_BITS + 1 + $bits(gpu_tmc_t) + $bits(gpu_wspawn_t) + $bits(gpu_split_t) + $bits(gpu_barrier_t))
) gpu_reg (
.clk (clk),
.reset (reset),
.stall (stall),
.flush (1'b0),
.in ({gpu_req_if.valid, gpu_req_if.wid, gpu_req_if.thread_mask, gpu_req_if.curr_PC, gpu_req_if.rd, gpu_req_if.wb, tmc, wspawn, split, barrier}),
.out ({gpu_commit_if.valid, gpu_commit_if.wid, gpu_commit_if.thread_mask, gpu_commit_if.curr_PC, gpu_commit_if.rd, gpu_commit_if.wb, warp_ctl_if.tmc, warp_ctl_if.wspawn, warp_ctl_if.split, warp_ctl_if.barrier})
);
assign warp_ctl_if.valid = gpu_commit_if.valid && gpu_commit_if.ready;
assign warp_ctl_if.wid = gpu_commit_if.wid;
assign gpu_commit_if.valid = gpu_req_if.valid;
assign gpu_commit_if.wid = gpu_req_if.wid;
assign gpu_commit_if.thread_mask = gpu_req_if.thread_mask;
assign gpu_commit_if.curr_PC = gpu_req_if.curr_PC;
assign gpu_commit_if.rd = gpu_req_if.rd;
assign gpu_commit_if.wb = gpu_req_if.wb;
// can accept new request?
assign gpu_req_if.ready = ~stall;
assign gpu_req_if.ready = gpu_commit_if.ready;
endmodule