VISHNU RAMADAS has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/70077?usp=email )
Change subject: dev-amdgpu: Add a few MQD attributes to GPUFS checkpoint
......................................................................
dev-amdgpu: Add a few MQD attributes to GPUFS checkpoint
During GPUFS checkpoint restore, doorbells callbacks are created based
on certain MQD attributes. These callbacks are required to create new
SDMA doorbells. If these attributes are not present in the checkpoint,
the restore hangs indefinitely waiting for ioctl calls that access these
doorbells to finish execution. This commit adds the attributes required
for checkpoint restore to proceed.
Change-Id: Id3d1b7a2627d4c50133d923096495957a233f675
---
M src/dev/amdgpu/pm4_packet_processor.cc
1 file changed, 30 insertions(+), 0 deletions(-)
diff --git a/src/dev/amdgpu/pm4_packet_processor.cc
b/src/dev/amdgpu/pm4_packet_processor.cc
index 071fe8b..3690113 100644
--- a/src/dev/amdgpu/pm4_packet_processor.cc
+++ b/src/dev/amdgpu/pm4_packet_processor.cc
@@ -1025,6 +1025,11 @@
uint32_t pipe[num_queues];
uint32_t queue[num_queues];
bool privileged[num_queues];
+ uint32_t hqd_active[num_queues];
+ uint32_t hqd_vmid[num_queues];
+ Addr aql_rptr[num_queues];
+ uint32_t doorbell[num_queues];
+ uint32_t hqd_pq_control[num_queues];
int i = 0;
for (auto iter : queues) {
@@ -1048,6 +1053,11 @@
pipe[i] = q->pipe();
queue[i] = q->queue();
privileged[i] = q->privileged();
+ hqd_active[i] = q->getMQD()->hqd_active;
+ hqd_vmid[i] = q->getMQD()->hqd_vmid;
+ aql_rptr[i] = q->getMQD()->aqlRptr;
+ doorbell[i] = q->getMQD()->doorbell;
+ hqd_pq_control[i] = q->getMQD()->hqd_pq_control;
i++;
}
@@ -1067,6 +1077,11 @@
SERIALIZE_ARRAY(pipe, num_queues);
SERIALIZE_ARRAY(queue, num_queues);
SERIALIZE_ARRAY(privileged, num_queues);
+ SERIALIZE_ARRAY(hqd_active, num_queues);
+ SERIALIZE_ARRAY(hqd_vmid, num_queues);
+ SERIALIZE_ARRAY(aql_rptr, num_queues);
+ SERIALIZE_ARRAY(doorbell, num_queues);
+ SERIALIZE_ARRAY(hqd_pq_control, num_queues);
}
void
@@ -1093,6 +1108,11 @@
uint32_t pipe[num_queues];
uint32_t queue[num_queues];
bool privileged[num_queues];
+ uint32_t hqd_active[num_queues];
+ uint32_t hqd_vmid[num_queues];
+ Addr aql_rptr[num_queues];
+ uint32_t doorbell[num_queues];
+ uint32_t hqd_pq_control[num_queues];
UNSERIALIZE_ARRAY(id, num_queues);
UNSERIALIZE_ARRAY(mqd_base, num_queues);
@@ -1109,6 +1129,11 @@
UNSERIALIZE_ARRAY(pipe, num_queues);
UNSERIALIZE_ARRAY(queue, num_queues);
UNSERIALIZE_ARRAY(privileged, num_queues);
+ UNSERIALIZE_ARRAY(hqd_active, num_queues);
+ UNSERIALIZE_ARRAY(hqd_vmid, num_queues);
+ UNSERIALIZE_ARRAY(aql_rptr, num_queues);
+ UNSERIALIZE_ARRAY(doorbell, num_queues);
+ UNSERIALIZE_ARRAY(hqd_pq_control, num_queues);
for (int i = 0; i < num_queues; i++) {
QueueDesc *mqd = new QueueDesc();
@@ -1132,6 +1157,11 @@
queues[id[i]]->processing(processing[i]);
queues[id[i]]->ib(ib[i]);
queues[id[i]]->setPkt(me[i], pipe[i], queue[i], privileged[i]);
+ queues[id[i]]->getMQD()->hqd_active = hqd_active[i];
+ queues[id[i]]->getMQD()->hqd_vmid = hqd_vmid[i];
+ queues[id[i]]->getMQD()->aqlRptr = aql_rptr[i];
+ queues[id[i]]->getMQD()->doorbell = doorbell[i];
+ queues[id[i]]->getMQD()->hqd_pq_control = hqd_pq_control[i];
DPRINTF(PM4PacketProcessor, "PM4 queue %d, rptr: %p wptr: %p\n",
queues[id[i]]->id(), queues[id[i]]->rptr(),
--
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Gerrit-MessageType: newchange
Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: Id3d1b7a2627d4c50133d923096495957a233f675
Gerrit-Change-Number: 70077
Gerrit-PatchSet: 1
Gerrit-Owner: VISHNU RAMADAS <vrama...@wisc.edu>
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