crypto: qat - add fatal error notification

Notify a fatal error condition and optionally reset the device in
the following cases:
  * if the device reports an uncorrectable fatal error through an
    interrupt
  * if the heartbeat feature detects that the device is not
    responding

This patch is based on earlier work done by Shashank Gupta.

Signed-off-by: Mun Chun Yep <mun.chun.yep@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Reviewed-by: Markas Rapoportas <markas.rapoportas@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/intel/qat/qat_common/adf_heartbeat.c

@@ -229,6 +229,9 @@ void adf_heartbeat_status(struct adf_accel_dev *accel_dev,
 			"Heartbeat ERROR: QAT is not responding.\n");
 		*hb_status = HB_DEV_UNRESPONSIVE;
 		hb->hb_failed_counter++;
+		if (adf_notify_fatal_error(accel_dev))
+			dev_err(&GET_DEV(accel_dev),
+				"Failed to notify fatal error\n");
 		return;
 	}
 

drivers/crypto/intel/qat/qat_common/adf_isr.c

@@ -139,8 +139,13 @@ static bool adf_handle_ras_int(struct adf_accel_dev *accel_dev)
 
 	if (ras_ops->handle_interrupt &&
 	    ras_ops->handle_interrupt(accel_dev, &reset_required)) {
-		if (reset_required)
+		if (reset_required) {
 			dev_err(&GET_DEV(accel_dev), "Fatal error, reset required\n");
+			if (adf_notify_fatal_error(accel_dev))
+				dev_err(&GET_DEV(accel_dev),
+					"Failed to notify fatal error\n");
+		}
+
 		return true;
 	}