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fixed scoreboard stall

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This commit is contained in:
Blaise Tine
2020-11-28 03:14:20 -05:00
parent 461be0880d
commit 457f831435
4 changed files with 32 additions and 15 deletions
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6
hw/rtl/VX_scoreboard.v
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@@ -51,7 +51,9 @@ module VX_scoreboard #(
inuse_registers[{ibuf_deq_if.wid, ibuf_deq_if.rd}] <= ibuf_deq_if.tmask;
end
if (release_reg) begin
assert(inuse_reg_mask[writeback_if.wid][writeback_if.rd] != 0);
assert(inuse_reg_mask[writeback_if.wid][writeback_if.rd] != 0)
else $error("*** %t: core%0d: invalid writeback register: wid=%0d, PC=%0h, rd=%0d",
$time, CORE_ID, writeback_if.wid, writeback_if.PC, writeback_if.rd);
inuse_registers[{writeback_if.wid, writeback_if.rd}] <= inuse_registers_n;
end
inuse_reg_mask <= inuse_reg_mask_n;
@@ -79,7 +81,7 @@ module VX_scoreboard #(
stall_ctr <= 0;
end else if (ibuf_deq_if.valid && ~ibuf_deq_if.ready) begin
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",
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);
end else if (ibuf_deq_if.valid && ibuf_deq_if.ready) begin