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// 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);
}
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