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/*
* Copyright (C) 2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include "nfp.h"
#include "nfp_nsp.h"
struct nsp_identify {
u8 version[40];
u8 flags;
u8 br_primary;
u8 br_secondary;
u8 br_nsp;
__le16 primary;
__le16 secondary;
__le16 nsp;
u8 reserved[6];
__le64 sensor_mask;
};
struct nfp_nsp_identify *__nfp_nsp_identify(struct nfp_nsp *nsp)
{
struct nfp_nsp_identify *nspi = NULL;
struct nsp_identify *ni;
int ret;
if (nfp_nsp_get_abi_ver_minor(nsp) < 15)
return NULL;
ni = kzalloc(sizeof(*ni), GFP_KERNEL);
if (!ni)
return NULL;
ret = nfp_nsp_read_identify(nsp, ni, sizeof(*ni));
if (ret < 0) {
nfp_err(nfp_nsp_cpp(nsp), "reading bsp version failed %d\n",
ret);
goto exit_free;
}
nspi = kzalloc(sizeof(*nspi), GFP_KERNEL);
if (!nspi)
goto exit_free;
memcpy(nspi->version, ni->version, sizeof(nspi->version));
nspi->version[sizeof(nspi->version) - 1] = '\0';
nspi->flags = ni->flags;
nspi->br_primary = ni->br_primary;
nspi->br_secondary = ni->br_secondary;
nspi->br_nsp = ni->br_nsp;
nspi->primary = le16_to_cpu(ni->primary);
nspi->secondary = le16_to_cpu(ni->secondary);
nspi->nsp = le16_to_cpu(ni->nsp);
nspi->sensor_mask = le64_to_cpu(ni->sensor_mask);
exit_free:
kfree(ni);
return nspi;
}
struct nfp_sensors {
__le32 chip_temp;
__le32 assembly_power;
__le32 assembly_12v_power;
__le32 assembly_3v3_power;
};
int nfp_hwmon_read_sensor(struct nfp_cpp *cpp, enum nfp_nsp_sensor_id id,
long *val)
{
struct nfp_sensors s;
struct nfp_nsp *nsp;
int ret;
nsp = nfp_nsp_open(cpp);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
ret = nfp_nsp_read_sensors(nsp, BIT(id), &s, sizeof(s));
nfp_nsp_close(nsp);
if (ret < 0)
return ret;
switch (id) {
case NFP_SENSOR_CHIP_TEMPERATURE:
*val = le32_to_cpu(s.chip_temp);
break;
case NFP_SENSOR_ASSEMBLY_POWER:
*val = le32_to_cpu(s.assembly_power);
break;
case NFP_SENSOR_ASSEMBLY_12V_POWER:
*val = le32_to_cpu(s.assembly_12v_power);
break;
case NFP_SENSOR_ASSEMBLY_3V3_POWER:
*val = le32_to_cpu(s.assembly_3v3_power);
break;
default:
return -EINVAL;
}
return 0;
}
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