[PATCH 07/13] crypto: qat - add fatal error notification

[Thibault Ferrante]

From: Mun Chun Yep <mun.chun.yep at intel.com>

BugLink: https://bugs.launchpad.net/bugs/2056354

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 at intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta at intel.com>
Reviewed-by: Markas Rapoportas <markas.rapoportas at intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu at intel.com>
Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
(cherry picked from commit 2aaa1995a94a3187e52ddb9f127fa1307ee8ad00 linux-next)
Signed-off-by: Thibault Ferrante <thibault.ferrante at canonical.com>
---
 drivers/crypto/intel/qat/qat_common/adf_heartbeat.c | 3 +++
 drivers/crypto/intel/qat/qat_common/adf_isr.c       | 7 ++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/intel/qat/qat_common/adf_heartbeat.c b/drivers/crypto/intel/qat/qat_common/adf_heartbeat.c
index f88b1bc6857e..fe8428d4ff39 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_heartbeat.c
+++ b/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;
 	}
 
diff --git a/drivers/crypto/intel/qat/qat_common/adf_isr.c b/drivers/crypto/intel/qat/qat_common/adf_isr.c
index 3557a0d6dea2..9d60fff5a76c 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_isr.c
+++ b/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;
 	}
 
-- 
2.43.0