163 lines
3.4 KiB
C
163 lines
3.4 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
/* Copyright (C) 2017 Netronome Systems, Inc. */
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/hwmon.h>
|
|
|
|
#include "nfpcore/nfp_cpp.h"
|
|
#include "nfpcore/nfp_nsp.h"
|
|
#include "nfp_main.h"
|
|
|
|
#define NFP_TEMP_MAX (95 * 1000)
|
|
#define NFP_TEMP_CRIT (105 * 1000)
|
|
|
|
#define NFP_POWER_MAX (25 * 1000 * 1000)
|
|
|
|
static int nfp_hwmon_sensor_id(enum hwmon_sensor_types type, int channel)
|
|
{
|
|
if (type == hwmon_temp)
|
|
return NFP_SENSOR_CHIP_TEMPERATURE;
|
|
if (type == hwmon_power)
|
|
return NFP_SENSOR_ASSEMBLY_POWER + channel;
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int
|
|
nfp_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
|
|
int channel, long *val)
|
|
{
|
|
static const struct {
|
|
enum hwmon_sensor_types type;
|
|
u32 attr;
|
|
long val;
|
|
} const_vals[] = {
|
|
{ hwmon_temp, hwmon_temp_max, NFP_TEMP_MAX },
|
|
{ hwmon_temp, hwmon_temp_crit, NFP_TEMP_CRIT },
|
|
{ hwmon_power, hwmon_power_max, NFP_POWER_MAX },
|
|
};
|
|
struct nfp_pf *pf = dev_get_drvdata(dev);
|
|
enum nfp_nsp_sensor_id id;
|
|
int err, i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(const_vals); i++)
|
|
if (const_vals[i].type == type && const_vals[i].attr == attr) {
|
|
*val = const_vals[i].val;
|
|
return 0;
|
|
}
|
|
|
|
err = nfp_hwmon_sensor_id(type, channel);
|
|
if (err < 0)
|
|
return err;
|
|
id = err;
|
|
|
|
if (!(pf->nspi->sensor_mask & BIT(id)))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (type == hwmon_temp && attr == hwmon_temp_input)
|
|
return nfp_hwmon_read_sensor(pf->cpp, id, val);
|
|
if (type == hwmon_power && attr == hwmon_power_input)
|
|
return nfp_hwmon_read_sensor(pf->cpp, id, val);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static umode_t
|
|
nfp_hwmon_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
|
|
int channel)
|
|
{
|
|
if (type == hwmon_temp) {
|
|
switch (attr) {
|
|
case hwmon_temp_input:
|
|
case hwmon_temp_crit:
|
|
case hwmon_temp_max:
|
|
return 0444;
|
|
}
|
|
} else if (type == hwmon_power) {
|
|
switch (attr) {
|
|
case hwmon_power_input:
|
|
case hwmon_power_max:
|
|
return 0444;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static u32 nfp_chip_config[] = {
|
|
HWMON_C_REGISTER_TZ,
|
|
0
|
|
};
|
|
|
|
static const struct hwmon_channel_info nfp_chip = {
|
|
.type = hwmon_chip,
|
|
.config = nfp_chip_config,
|
|
};
|
|
|
|
static u32 nfp_temp_config[] = {
|
|
HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT,
|
|
0
|
|
};
|
|
|
|
static const struct hwmon_channel_info nfp_temp = {
|
|
.type = hwmon_temp,
|
|
.config = nfp_temp_config,
|
|
};
|
|
|
|
static u32 nfp_power_config[] = {
|
|
HWMON_P_INPUT | HWMON_P_MAX,
|
|
HWMON_P_INPUT,
|
|
HWMON_P_INPUT,
|
|
0
|
|
};
|
|
|
|
static const struct hwmon_channel_info nfp_power = {
|
|
.type = hwmon_power,
|
|
.config = nfp_power_config,
|
|
};
|
|
|
|
static const struct hwmon_channel_info *nfp_hwmon_info[] = {
|
|
&nfp_chip,
|
|
&nfp_temp,
|
|
&nfp_power,
|
|
NULL
|
|
};
|
|
|
|
static const struct hwmon_ops nfp_hwmon_ops = {
|
|
.is_visible = nfp_hwmon_is_visible,
|
|
.read = nfp_hwmon_read,
|
|
};
|
|
|
|
static const struct hwmon_chip_info nfp_chip_info = {
|
|
.ops = &nfp_hwmon_ops,
|
|
.info = nfp_hwmon_info,
|
|
};
|
|
|
|
int nfp_hwmon_register(struct nfp_pf *pf)
|
|
{
|
|
if (!IS_REACHABLE(CONFIG_HWMON))
|
|
return 0;
|
|
|
|
if (!pf->nspi) {
|
|
nfp_warn(pf->cpp, "not registering HWMON (no NSP info)\n");
|
|
return 0;
|
|
}
|
|
if (!pf->nspi->sensor_mask) {
|
|
nfp_info(pf->cpp,
|
|
"not registering HWMON (NSP doesn't report sensors)\n");
|
|
return 0;
|
|
}
|
|
|
|
pf->hwmon_dev = hwmon_device_register_with_info(&pf->pdev->dev, "nfp",
|
|
pf, &nfp_chip_info,
|
|
NULL);
|
|
return PTR_ERR_OR_ZERO(pf->hwmon_dev);
|
|
}
|
|
|
|
void nfp_hwmon_unregister(struct nfp_pf *pf)
|
|
{
|
|
if (!IS_REACHABLE(CONFIG_HWMON) || !pf->hwmon_dev)
|
|
return;
|
|
|
|
hwmon_device_unregister(pf->hwmon_dev);
|
|
}
|