hw/npu2: Report errors to the OS if an OpenCAPI brick is fenced

Now that the NPU may report interrupts due to the link going down
unexpectedly, report those errors to the OS when queried by the
'next_error' PHB callback.

The hardware doesn't support recovery of the link when it goes down
unexpectedly. So we report the PHB as dead, so that the OS can log the
proper message, notify the drivers and take the devices down.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/npu2.h b/include/npu2.h
index 6c73679f..ef4e7aff 100644
--- a/include/npu2.h
+++ b/include/npu2.h
@@ -157,6 +157,7 @@ struct npu2_dev {
 
 	/* OpenCAPI */
 	struct phb		phb_ocapi;
+	uint64_t		linux_pe;
 	bool			train_need_fence;
 	bool			train_fenced;
 };