Commit 3ca8bc6d authored by Don Skidmore's avatar Don Skidmore Committed by Jeff Kirsher

ixgbe: add hwmon interface to export thermal data

Some of our adapters have thermal data available, this patch exports
this data via hwmon sysfs interface.
Signed-off-by: default avatarDon Skidmore <donald.c.skidmore@intel.com>
Tested-by: default avatarStephen Ko <stephen.s.ko@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent e1ea9158
......@@ -193,6 +193,14 @@ config IXGBE
To compile this driver as a module, choose M here. The module
will be called ixgbe.
config IXGBE_HWMON
bool "Intel(R) 10GbE PCI Express adapters HWMON support"
default y
depends on IXGBE && HWMON && !(IXGBE=y && HWMON=m)
---help---
Say Y if you want to expose the thermal sensor data on some of
our cards, via a hwmon sysfs interface.
config IXGBE_DCA
bool "Direct Cache Access (DCA) Support"
default y
......
......@@ -34,7 +34,7 @@ obj-$(CONFIG_IXGBE) += ixgbe.o
ixgbe-objs := ixgbe_main.o ixgbe_common.o ixgbe_ethtool.o \
ixgbe_82599.o ixgbe_82598.o ixgbe_phy.o ixgbe_sriov.o \
ixgbe_mbx.o ixgbe_x540.o ixgbe_lib.o
ixgbe_mbx.o ixgbe_x540.o ixgbe_sysfs.o ixgbe_lib.o
ixgbe-$(CONFIG_IXGBE_DCB) += ixgbe_dcb.o ixgbe_dcb_82598.o \
ixgbe_dcb_82599.o ixgbe_dcb_nl.o
......
......@@ -331,6 +331,26 @@ struct ixgbe_q_vector {
/* for dynamic allocation of rings associated with this q_vector */
struct ixgbe_ring ring[0] ____cacheline_internodealigned_in_smp;
};
#ifdef CONFIG_IXGBE_HWMON
#define IXGBE_HWMON_TYPE_LOC 0
#define IXGBE_HWMON_TYPE_TEMP 1
#define IXGBE_HWMON_TYPE_CAUTION 2
#define IXGBE_HWMON_TYPE_MAX 3
struct hwmon_attr {
struct device_attribute dev_attr;
struct ixgbe_hw *hw;
struct ixgbe_thermal_diode_data *sensor;
char name[12];
};
struct hwmon_buff {
struct device *device;
struct hwmon_attr *hwmon_list;
unsigned int n_hwmon;
};
#endif /* CONFIG_IXGBE_HWMON */
/*
* microsecond values for various ITR rates shifted by 2 to fit itr register
......@@ -535,6 +555,10 @@ struct ixgbe_adapter {
u32 timer_event_accumulator;
u32 vferr_refcount;
struct kobject *info_kobj;
#ifdef CONFIG_IXGBE_HWMON
struct hwmon_buff ixgbe_hwmon_buff;
#endif /* CONFIG_IXGBE_HWMON */
};
struct ixgbe_fdir_filter {
......@@ -635,6 +659,8 @@ extern int ixgbe_setup_tc(struct net_device *dev, u8 tc);
#endif
extern void ixgbe_tx_ctxtdesc(struct ixgbe_ring *, u32, u32, u32, u32);
extern void ixgbe_do_reset(struct net_device *netdev);
extern void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter);
extern int ixgbe_sysfs_init(struct ixgbe_adapter *adapter);
#ifdef IXGBE_FCOE
extern void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter);
extern int ixgbe_fso(struct ixgbe_ring *tx_ring,
......
......@@ -1277,6 +1277,8 @@ static struct ixgbe_mac_operations mac_ops_82598 = {
.set_fw_drv_ver = NULL,
.acquire_swfw_sync = &ixgbe_acquire_swfw_sync,
.release_swfw_sync = &ixgbe_release_swfw_sync,
.get_thermal_sensor_data = NULL,
.init_thermal_sensor_thresh = NULL,
};
static struct ixgbe_eeprom_operations eeprom_ops_82598 = {
......
......@@ -2119,6 +2119,8 @@ static struct ixgbe_mac_operations mac_ops_82599 = {
.set_vlan_anti_spoofing = &ixgbe_set_vlan_anti_spoofing,
.acquire_swfw_sync = &ixgbe_acquire_swfw_sync,
.release_swfw_sync = &ixgbe_release_swfw_sync,
.get_thermal_sensor_data = &ixgbe_get_thermal_sensor_data_generic,
.init_thermal_sensor_thresh = &ixgbe_init_thermal_sensor_thresh_generic,
};
......
......@@ -3669,9 +3669,8 @@ s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
u8 i;
struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
/* Only support thermal sensors attached to 82599 physical port 0 */
if ((hw->mac.type != ixgbe_mac_82599EB) ||
(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
/* Only support thermal sensors attached to physical port 0 */
if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
status = IXGBE_NOT_IMPLEMENTED;
goto out;
}
......@@ -3732,9 +3731,8 @@ s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
/* Only support thermal sensors attached to 82599 physical port 0 */
if ((hw->mac.type != ixgbe_mac_82599EB) ||
(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
/* Only support thermal sensors attached to physical port 0 */
if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
status = IXGBE_NOT_IMPLEMENTED;
goto out;
}
......
......@@ -7219,6 +7219,10 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
e_dev_info("%s\n", ixgbe_default_device_descr);
cards_found++;
if (ixgbe_sysfs_init(adapter))
e_err(probe, "failed to allocate sysfs resources\n");
return 0;
err_register:
......@@ -7265,6 +7269,8 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
}
#endif
ixgbe_sysfs_exit(adapter);
#ifdef IXGBE_FCOE
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
ixgbe_cleanup_fcoe(adapter);
......
/*******************************************************************************
Intel 10 Gigabit PCI Express Linux driver
Copyright(c) 1999 - 2012 Intel Corporation.
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information:
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include "ixgbe.h"
#include "ixgbe_common.h"
#include "ixgbe_type.h"
#include <linux/module.h>
#include <linux/types.h>
#include <linux/sysfs.h>
#include <linux/kobject.h>
#include <linux/device.h>
#include <linux/netdevice.h>
#include <linux/hwmon.h>
/*
* This file provides a sysfs interface to export information from the
* driver. The information presented is READ-ONLY.
*/
#ifdef CONFIG_IXGBE_HWMON
/* hwmon callback functions */
static ssize_t ixgbe_hwmon_show_location(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
dev_attr);
return sprintf(buf, "loc%u\n",
ixgbe_attr->sensor->location);
}
static ssize_t ixgbe_hwmon_show_temp(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
dev_attr);
unsigned int value;
/* reset the temp field */
ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
value = ixgbe_attr->sensor->temp;
/* display millidegree */
value *= 1000;
return sprintf(buf, "%u\n", value);
}
static ssize_t ixgbe_hwmon_show_cautionthresh(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
dev_attr);
unsigned int value = ixgbe_attr->sensor->caution_thresh;
/* display millidegree */
value *= 1000;
return sprintf(buf, "%u\n", value);
}
static ssize_t ixgbe_hwmon_show_maxopthresh(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
dev_attr);
unsigned int value = ixgbe_attr->sensor->max_op_thresh;
/* display millidegree */
value *= 1000;
return sprintf(buf, "%u\n", value);
}
/*
* ixgbe_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
* @ adapter: pointer to the adapter structure
* @ offset: offset in the eeprom sensor data table
* @ type: type of sensor data to display
*
* For each file we want in hwmon's sysfs interface we need a device_attribute
* This is included in our hwmon_attr struct that contains the references to
* the data structures we need to get the data to display.
*/
static int ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter,
unsigned int offset, int type) {
int rc;
unsigned int n_attr;
struct hwmon_attr *ixgbe_attr;
n_attr = adapter->ixgbe_hwmon_buff.n_hwmon;
ixgbe_attr = &adapter->ixgbe_hwmon_buff.hwmon_list[n_attr];
switch (type) {
case IXGBE_HWMON_TYPE_LOC:
ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_location;
snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
"temp%u_label", offset);
break;
case IXGBE_HWMON_TYPE_TEMP:
ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_temp;
snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
"temp%u_input", offset);
break;
case IXGBE_HWMON_TYPE_CAUTION:
ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_cautionthresh;
snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
"temp%u_max", offset);
break;
case IXGBE_HWMON_TYPE_MAX:
ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_maxopthresh;
snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
"temp%u_crit", offset);
break;
default:
rc = -EPERM;
return rc;
}
/* These always the same regardless of type */
ixgbe_attr->sensor =
&adapter->hw.mac.thermal_sensor_data.sensor[offset];
ixgbe_attr->hw = &adapter->hw;
ixgbe_attr->dev_attr.store = NULL;
ixgbe_attr->dev_attr.attr.mode = S_IRUGO;
ixgbe_attr->dev_attr.attr.name = ixgbe_attr->name;
rc = device_create_file(&adapter->pdev->dev,
&ixgbe_attr->dev_attr);
if (rc == 0)
++adapter->ixgbe_hwmon_buff.n_hwmon;
return rc;
}
#endif /* CONFIG_IXGBE_HWMON */
static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
{
#ifdef CONFIG_IXGBE_HWMON
int i;
#endif /* CONFIG_IXGBE_HWMON */
if (adapter == NULL)
return;
#ifdef CONFIG_IXGBE_HWMON
for (i = 0; i < adapter->ixgbe_hwmon_buff.n_hwmon; i++) {
device_remove_file(&adapter->pdev->dev,
&adapter->ixgbe_hwmon_buff.hwmon_list[i].dev_attr);
}
kfree(adapter->ixgbe_hwmon_buff.hwmon_list);
if (adapter->ixgbe_hwmon_buff.device)
hwmon_device_unregister(adapter->ixgbe_hwmon_buff.device);
#endif /* CONFIG_IXGBE_HWMON */
if (adapter->info_kobj != NULL)
kobject_put(adapter->info_kobj);
}
/* called from ixgbe_main.c */
void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
{
ixgbe_sysfs_del_adapter(adapter);
}
/* called from ixgbe_main.c */
int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
{
#ifdef CONFIG_IXGBE_HWMON
struct hwmon_buff *ixgbe_hwmon = &adapter->ixgbe_hwmon_buff;
unsigned int i;
int n_attrs;
#endif /* CONFIG_IXGBE_HWMON */
struct net_device *netdev = adapter->netdev;
int rc = 0;
/* create info kobj and attribute listings in kobj */
adapter->info_kobj = kobject_create_and_add("info", &netdev->dev.kobj);
if (adapter->info_kobj == NULL) {
rc = -ENOMEM;
goto err;
}
#ifdef CONFIG_IXGBE_HWMON
/* If this method isn't defined we don't support thermals */
if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
rc = -EPERM;
goto err;
}
/* Don't create thermal hwmon interface if no sensors present */
rc = adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw);
if (rc)
goto err;
/*
* Allocation space for max attributs
* max num sensors * values (loc, temp, max, caution)
*/
n_attrs = IXGBE_MAX_SENSORS * 4;
ixgbe_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr),
GFP_KERNEL);
if (!ixgbe_hwmon->hwmon_list) {
rc = -ENOMEM;
goto err;
}
ixgbe_hwmon->device = hwmon_device_register(&adapter->pdev->dev);
if (IS_ERR(ixgbe_hwmon->device)) {
rc = PTR_ERR(ixgbe_hwmon->device);
goto err;
}
for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
/*
* Only create hwmon sysfs entries for sensors that have
* meaningful data for.
*/
if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
continue;
/* Bail if any hwmon attr struct fails to initialize */
rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION);
rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC);
rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP);
rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX);
if (rc)
goto err;
}
#endif /* CONFIG_IXGBE_HWMON */
goto exit;
err:
ixgbe_sysfs_del_adapter(adapter);
exit:
return rc;
}
......@@ -849,6 +849,8 @@ static struct ixgbe_mac_operations mac_ops_X540 = {
.release_swfw_sync = &ixgbe_release_swfw_sync_X540,
.disable_rx_buff = &ixgbe_disable_rx_buff_generic,
.enable_rx_buff = &ixgbe_enable_rx_buff_generic,
.get_thermal_sensor_data = NULL,
.init_thermal_sensor_thresh = NULL,
};
static struct ixgbe_eeprom_operations eeprom_ops_X540 = {
......
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