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Cause two surprising conditions to not throw slave errors as this is not

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specified and causes kernel panics.  Hopefully the details of what
should happen in these cases is correct, but we shall see...
This commit is contained in:
jon
2020-12-17 12:37:45 +00:00
parent fa9931b64c
commit 4131dcd073
1 changed files with 1 additions and 3 deletions
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4
src_Core/PLIC/PLIC.bsv
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@@ -362,18 +362,17 @@ module mkPLIC (PLIC_IFC #(t_n_external_sources, t_n_targets, t_max_priority))
match { .max_prio, .max_id } = fn_target_max_prio_and_max_id (target_id);
Bool eip = (max_prio > vrg_target_threshold [target_id]);
if (target_id <= fromInteger (n_targets - 1)) begin
if (max_id != 0) vrg_source_busy [max_id] <= True; // Set vrg_source_busy even if there was an error.
if (vrg_servicing_source [target_id] != 0) begin
$display ("%0d: ERROR: PLIC: target %0d claiming without prior completion",
cur_cycle, target_id);
$display (" Still servicing interrupt from source %0d", vrg_servicing_source [target_id]);
$display (" Trying to claim service for source %0d", max_id);
$display (" Ignoring.");
rresp = SLVERR;
end
else begin
if (max_id != 0) begin
vrg_source_ip [max_id] <= False;
vrg_source_busy [max_id] <= True;
vrg_servicing_source [target_id] <= truncate (max_id);
rdata = changeWidth (max_id);
@@ -530,7 +529,6 @@ module mkPLIC (PLIC_IFC #(t_n_external_sources, t_n_targets, t_max_priority))
cur_cycle);
$display (" Completion message from target %0d to source %0d", target_id, source_id);
$display (" Ignoring");
bresp = SLVERR;
end
end
else