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fixed l3cache hang using memory arbiter in afu

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This commit is contained in:
Blaise Tine
2020-11-15 06:36:32 -08:00
parent 2e0f51af80
commit 5d58bf3d11
20 changed files with 514 additions and 388 deletions
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20
hw/rtl/VX_scoreboard.v
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@@ -64,23 +64,27 @@ module VX_scoreboard #(
assign ibuf_deq_if.ready = ~(delay || exe_delay || gpr_delay);
`ifdef DBG_PRINT_PIPELINE
always @(posedge clk) begin
if (ibuf_deq_if.valid && ~ibuf_deq_if.ready) begin
$display("%t: core%0d-stall: wid=%0d, PC=%0h, rd=%0d, wb=%0d, inuse=%b%b%b%b, exe=%b, gpr=%b",
$time, CORE_ID, ibuf_deq_if.wid, ibuf_deq_if.PC, ibuf_deq_if.rd, ibuf_deq_if.wb,
inuse_regs[ibuf_deq_if.rd], inuse_regs[ibuf_deq_if.rs1], inuse_regs[ibuf_deq_if.rs2], inuse_regs[ibuf_deq_if.rs3], exe_delay, gpr_delay);
end
end
`endif
reg [31:0] stall_ctr;
always @(posedge clk) begin
if (reset) begin
stall_ctr <= 0;
end else if (ibuf_deq_if.valid && ~ibuf_deq_if.ready) begin
$display("%t: core%0d-stall: wid=%0d, PC=%0h, rd=%0d, wb=%0d, inuse=%b%b%b%b, exe=%b, gpr=%b",
stall_ctr <= stall_ctr + 1;
assert(stall_ctr < 100000) else $error("%t: core%0d-stalled: wid=%0d, PC=%0h, rd=%0d, wb=%0d, inuse=%b%b%b%b, exe=%b, gpr=%b",
$time, CORE_ID, ibuf_deq_if.wid, ibuf_deq_if.PC, ibuf_deq_if.rd, ibuf_deq_if.wb,
inuse_regs[ibuf_deq_if.rd], inuse_regs[ibuf_deq_if.rs1], inuse_regs[ibuf_deq_if.rs2], inuse_regs[ibuf_deq_if.rs3], exe_delay, gpr_delay);
stall_ctr <= stall_ctr + 1;
if (stall_ctr >= 2000) begin
$fflush();
assert(0);
end
end else if (ibuf_deq_if.valid && ibuf_deq_if.ready) begin
stall_ctr <= 0;
end
end
`endif
end
endmodule