habanalabs: GAUDI does not support soft-reset
GAUDI does not support soft-reset as it leaves the NIC ports in an awkward
state, where their QMANs were reset but the NIC itself is still working.
In addition, there is not much sense in doing soft-reset when training is
done on multiple GAUDIs.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Tomer Tayar <ttayar@habana.ai>
diff --git a/drivers/misc/habanalabs/device.c b/drivers/misc/habanalabs/device.c
index 4b6c8de..4a4a446 100644
--- a/drivers/misc/habanalabs/device.c
+++ b/drivers/misc/habanalabs/device.c
@@ -801,6 +801,7 @@ static void device_hard_reset_pending(struct work_struct *work)
* @hdev: pointer to habanalabs device structure
* @hard_reset: should we do hard reset to all engines or just reset the
* compute/dma engines
+ * @from_hard_reset_thread: is the caller the hard-reset thread
*
* Block future CS and wait for pending CS to be enqueued
* Call ASIC H/W fini
@@ -823,6 +824,11 @@ int hl_device_reset(struct hl_device *hdev, bool hard_reset,
return 0;
}
+ if ((!hard_reset) && (!hdev->supports_soft_reset)) {
+ dev_dbg(hdev->dev, "Doing hard-reset instead of soft-reset\n");
+ hard_reset = true;
+ }
+
/*
* Prevent concurrency in this function - only one reset should be
* done at any given time. Only need to perform this if we didn't