--- /dev/null
+What: /sys/bus/pci/devices/<BDF>/qat_ras/errors_correctable
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Reports the number of correctable errors detected by the device.
+
+ This attribute is only available for qat_4xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_ras/errors_nonfatal
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Reports the number of non fatal errors detected by the device.
+
+ This attribute is only available for qat_4xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_ras/errors_fatal
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Reports the number of fatal errors detected by the device.
+
+ This attribute is only available for qat_4xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_ras/reset_error_counters
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (WO) Write to resets all error counters of a device.
+
+ The following example reports how to reset the counters::
+
+ # echo 1 > /sys/bus/pci/devices/<BDF>/qat_ras/reset_error_counters
+ # cat /sys/bus/pci/devices/<BDF>/qat_ras/errors_correctable
+ 0
+ # cat /sys/bus/pci/devices/<BDF>/qat_ras/errors_nonfatal
+ 0
+ # cat /sys/bus/pci/devices/<BDF>/qat_ras/errors_fatal
+ 0
+
+ This attribute is only available for qat_4xxx devices.
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright(c) 2023 Intel Corporation */
+
+#include <linux/sysfs.h>
+#include <linux/pci.h>
+#include <linux/string.h>
+
+#include "adf_common_drv.h"
+#include "adf_sysfs_ras_counters.h"
+
+static ssize_t errors_correctable_show(struct device *dev,
+ struct device_attribute *dev_attr,
+ char *buf)
+{
+ struct adf_accel_dev *accel_dev;
+ unsigned long counter;
+
+ accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev));
+ if (!accel_dev)
+ return -EINVAL;
+
+ counter = ADF_RAS_ERR_CTR_READ(accel_dev->ras_errors, ADF_RAS_CORR);
+ return scnprintf(buf, PAGE_SIZE, "%ld\n", counter);
+}
+
+static ssize_t errors_nonfatal_show(struct device *dev,
+ struct device_attribute *dev_attr,
+ char *buf)
+{
+ struct adf_accel_dev *accel_dev;
+ unsigned long counter;
+
+ accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev));
+ if (!accel_dev)
+ return -EINVAL;
+
+ counter = ADF_RAS_ERR_CTR_READ(accel_dev->ras_errors, ADF_RAS_UNCORR);
+ return scnprintf(buf, PAGE_SIZE, "%ld\n", counter);
+}
+
+static ssize_t errors_fatal_show(struct device *dev,
+ struct device_attribute *dev_attr,
+ char *buf)
+{
+ struct adf_accel_dev *accel_dev;
+ unsigned long counter;
+
+ accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev));
+ if (!accel_dev)
+ return -EINVAL;
+
+ counter = ADF_RAS_ERR_CTR_READ(accel_dev->ras_errors, ADF_RAS_FATAL);
+ return scnprintf(buf, PAGE_SIZE, "%ld\n", counter);
+}
+
+static ssize_t reset_error_counters_store(struct device *dev,
+ struct device_attribute *dev_attr,
+ const char *buf, size_t count)
+{
+ struct adf_accel_dev *accel_dev;
+
+ if (buf[0] != '1' || count != 2)
+ return -EINVAL;
+
+ accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev));
+ if (!accel_dev)
+ return -EINVAL;
+
+ ADF_RAS_ERR_CTR_CLEAR(accel_dev->ras_errors);
+
+ return count;
+}
+
+static DEVICE_ATTR_RO(errors_correctable);
+static DEVICE_ATTR_RO(errors_nonfatal);
+static DEVICE_ATTR_RO(errors_fatal);
+static DEVICE_ATTR_WO(reset_error_counters);
+
+static struct attribute *qat_ras_attrs[] = {
+ &dev_attr_errors_correctable.attr,
+ &dev_attr_errors_nonfatal.attr,
+ &dev_attr_errors_fatal.attr,
+ &dev_attr_reset_error_counters.attr,
+ NULL,
+};
+
+static struct attribute_group qat_ras_group = {
+ .attrs = qat_ras_attrs,
+ .name = "qat_ras",
+};
+
+void adf_sysfs_start_ras(struct adf_accel_dev *accel_dev)
+{
+ if (!accel_dev->ras_errors.enabled)
+ return;
+
+ ADF_RAS_ERR_CTR_CLEAR(accel_dev->ras_errors);
+
+ if (device_add_group(&GET_DEV(accel_dev), &qat_ras_group))
+ dev_err(&GET_DEV(accel_dev),
+ "Failed to create qat_ras attribute group.\n");
+}
+
+void adf_sysfs_stop_ras(struct adf_accel_dev *accel_dev)
+{
+ if (!accel_dev->ras_errors.enabled)
+ return;
+
+ device_remove_group(&GET_DEV(accel_dev), &qat_ras_group);
+
+ ADF_RAS_ERR_CTR_CLEAR(accel_dev->ras_errors);
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright(c) 2023 Intel Corporation */
+
+#ifndef ADF_RAS_H
+#define ADF_RAS_H
+
+#include <linux/bitops.h>
+#include <linux/atomic.h>
+
+struct adf_accel_dev;
+
+void adf_sysfs_start_ras(struct adf_accel_dev *accel_dev);
+void adf_sysfs_stop_ras(struct adf_accel_dev *accel_dev);
+
+#define ADF_RAS_ERR_CTR_READ(ras_errors, ERR) \
+ atomic_read(&(ras_errors).counter[ERR])
+
+#define ADF_RAS_ERR_CTR_CLEAR(ras_errors) \
+ do { \
+ for (int err = 0; err < ADF_RAS_ERRORS; ++err) \
+ atomic_set(&(ras_errors).counter[err], 0); \
+ } while (0)
+
+#define ADF_RAS_ERR_CTR_INC(ras_errors, ERR) \
+ atomic_inc(&(ras_errors).counter[ERR])
+
+#endif /* ADF_RAS_H */