crypto: qat - add infrastructure for error reporting

Add infrastructure for enabling, disabling and reporting errors in the QAT
driver. This adds a new structure, adf_ras_ops, to adf_hw_device_data that
contains the following methods:
  - enable_ras_errors(): allows to enable RAS errors at device
    initialization.
  - disable_ras_errors(): allows to disable RAS errors at device shutdown.
  - handle_interrupt(): allows to detect if there is an error and report if
    a reset is required. This is executed immediately after the error is
    reported, in the context of an ISR.

An initial, empty, implementation of the methods above is provided
for QAT GEN4.

Signed-off-by: Shashank Gupta <shashank.gupta@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Tero Kristo <tero.kristo@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_ras.c b/drivers/crypto/intel/qat/qat_common/adf_gen4_ras.c
new file mode 100644
index 000000000000..0bf243a51527
--- /dev/null
+++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_ras.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright(c) 2023 Intel Corporation */
+#include "adf_common_drv.h"
+#include "adf_gen4_ras.h"
+
+static void adf_gen4_enable_ras(struct adf_accel_dev *accel_dev)
+{
+}
+
+static void adf_gen4_disable_ras(struct adf_accel_dev *accel_dev)
+{
+}
+
+static bool adf_gen4_handle_interrupt(struct adf_accel_dev *accel_dev,
+				      bool *reset_required)
+{
+	return false;
+}
+
+void adf_gen4_init_ras_ops(struct adf_ras_ops *ras_ops)
+{
+	ras_ops->enable_ras_errors = adf_gen4_enable_ras;
+	ras_ops->disable_ras_errors = adf_gen4_disable_ras;
+	ras_ops->handle_interrupt = adf_gen4_handle_interrupt;
+}
+EXPORT_SYMBOL_GPL(adf_gen4_init_ras_ops);