[deliverable/linux.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sysfs.c

/*******************************************************************************

  Intel 10 Gigabit PCI Express Linux driver
  Copyright(c) 1999 - 2013 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:
  Linux NICS <linux.nics@intel.com>
  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>

/* 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 + 1);
		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 + 1);
		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 + 1);
		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 + 1);
		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;
	sysfs_attr_init(&ixgbe_attr->dev_attr.attr);

	adapter->ixgbe_hwmon_buff->attrs[n_attr] = &ixgbe_attr->dev_attr.attr;

	++adapter->ixgbe_hwmon_buff->n_hwmon;

	return 0;
}

static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
{
}

/* 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)
{
	struct hwmon_buff *ixgbe_hwmon;
	struct device *hwmon_dev;
	unsigned int i;
	int rc = 0;

	/* If this method isn't defined we don't support thermals */
	if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
		goto exit;
	}

	/* Don't create thermal hwmon interface if no sensors present */
	if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
		goto exit;

	ixgbe_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*ixgbe_hwmon),
				   GFP_KERNEL);
	if (ixgbe_hwmon == NULL) {
		rc = -ENOMEM;
		goto exit;
	}
	adapter->ixgbe_hwmon_buff = ixgbe_hwmon;

	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);
		if (rc)
			goto exit;
		rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC);
		if (rc)
			goto exit;
		rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP);
		if (rc)
			goto exit;
		rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX);
		if (rc)
			goto exit;
	}

	ixgbe_hwmon->groups[0] = &ixgbe_hwmon->group;
	ixgbe_hwmon->group.attrs = ixgbe_hwmon->attrs;

	hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
							   "ixgbe",
							   ixgbe_hwmon,
							   ixgbe_hwmon->groups);
	if (IS_ERR(hwmon_dev))
		rc = PTR_ERR(hwmon_dev);
exit:
	return rc;
}
Commit	Line	Data
3ca8bc6d DS	1	/*******************************************************************************
	2
	3	Intel 10 Gigabit PCI Express Linux driver
434c5e39	4	Copyright(c) 1999 - 2013 Intel Corporation.
3ca8bc6d DS	5
	6	This program is free software; you can redistribute it and/or modify it
	7	under the terms and conditions of the GNU General Public License,
	8	version 2, as published by the Free Software Foundation.
	9
	10	This program is distributed in the hope it will be useful, but WITHOUT
	11	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	more details.
	14
	15	You should have received a copy of the GNU General Public License along with
	16	this program; if not, write to the Free Software Foundation, Inc.,
	17	51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
	18
	19	The full GNU General Public License is included in this distribution in
	20	the file called "COPYING".
	21
	22	Contact Information:
b89aae71	23	Linux NICS <linux.nics@intel.com>
3ca8bc6d DS	24	e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
	25	Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	26
	27	*******************************************************************************/
	28
	29	#include "ixgbe.h"
	30	#include "ixgbe_common.h"
	31	#include "ixgbe_type.h"
	32
	33	#include <linux/module.h>
	34	#include <linux/types.h>
	35	#include <linux/sysfs.h>
	36	#include <linux/kobject.h>
	37	#include <linux/device.h>
	38	#include <linux/netdevice.h>
	39	#include <linux/hwmon.h>
	40
3ca8bc6d DS	41	/* hwmon callback functions */
	42	static ssize_t ixgbe_hwmon_show_location(struct device *dev,
	43	struct device_attribute *attr,
	44	char *buf)
	45	{
	46	struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
	47	dev_attr);
	48	return sprintf(buf, "loc%u\n",
	49	ixgbe_attr->sensor->location);
	50	}
	51
	52	static ssize_t ixgbe_hwmon_show_temp(struct device *dev,
	53	struct device_attribute *attr,
	54	char *buf)
	55	{
	56	struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
	57	dev_attr);
	58	unsigned int value;
	59
	60	/* reset the temp field */
	61	ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
	62
	63	value = ixgbe_attr->sensor->temp;
	64
	65	/* display millidegree */
	66	value *= 1000;
	67
	68	return sprintf(buf, "%u\n", value);
	69	}
	70
	71	static ssize_t ixgbe_hwmon_show_cautionthresh(struct device *dev,
	72	struct device_attribute *attr,
	73	char *buf)
	74	{
	75	struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
	76	dev_attr);
	77	unsigned int value = ixgbe_attr->sensor->caution_thresh;
	78
	79	/* display millidegree */
	80	value *= 1000;
	81
	82	return sprintf(buf, "%u\n", value);
	83	}
	84
	85	static ssize_t ixgbe_hwmon_show_maxopthresh(struct device *dev,
	86	struct device_attribute *attr,
	87	char *buf)
	88	{
	89	struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
	90	dev_attr);
	91	unsigned int value = ixgbe_attr->sensor->max_op_thresh;
	92
	93	/* display millidegree */
	94	value *= 1000;
	95
	96	return sprintf(buf, "%u\n", value);
	97	}
	98
49ce9c2c	99	/**
3ca8bc6d	100	* ixgbe_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
49ce9c2c BH	101	* @adapter: pointer to the adapter structure
	102	* @offset: offset in the eeprom sensor data table
	103	* @type: type of sensor data to display
3ca8bc6d DS	104	*
	105	* For each file we want in hwmon's sysfs interface we need a device_attribute
	106	* This is included in our hwmon_attr struct that contains the references to
	107	* the data structures we need to get the data to display.
	108	*/
	109	static int ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter,
	110	unsigned int offset, int type) {
	111	int rc;
	112	unsigned int n_attr;
	113	struct hwmon_attr *ixgbe_attr;
	114
03b77d81 GR	115	n_attr = adapter->ixgbe_hwmon_buff->n_hwmon;
03b77d81 GR	116	ixgbe_attr = &adapter->ixgbe_hwmon_buff->hwmon_list[n_attr];
3ca8bc6d DS	117
	118	switch (type) {
	119	case IXGBE_HWMON_TYPE_LOC:
	120	ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_location;
	121	snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
22dd81c5	122	"temp%u_label", offset + 1);
3ca8bc6d DS	123	break;
	124	case IXGBE_HWMON_TYPE_TEMP:
	125	ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_temp;
	126	snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
22dd81c5	127	"temp%u_input", offset + 1);
3ca8bc6d DS	128	break;
	129	case IXGBE_HWMON_TYPE_CAUTION:
	130	ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_cautionthresh;
	131	snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
22dd81c5	132	"temp%u_max", offset + 1);
3ca8bc6d DS	133	break;
	134	case IXGBE_HWMON_TYPE_MAX:
	135	ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_maxopthresh;
	136	snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
22dd81c5	137	"temp%u_crit", offset + 1);
3ca8bc6d DS	138	break;
	139	default:
	140	rc = -EPERM;
	141	return rc;
	142	}
	143
	144	/* These always the same regardless of type */
	145	ixgbe_attr->sensor =
	146	&adapter->hw.mac.thermal_sensor_data.sensor[offset];
	147	ixgbe_attr->hw = &adapter->hw;
	148	ixgbe_attr->dev_attr.store = NULL;
	149	ixgbe_attr->dev_attr.attr.mode = S_IRUGO;
	150	ixgbe_attr->dev_attr.attr.name = ixgbe_attr->name;
03b77d81	151	sysfs_attr_init(&ixgbe_attr->dev_attr.attr);
3ca8bc6d	152
03b77d81	153	adapter->ixgbe_hwmon_buff->attrs[n_attr] = &ixgbe_attr->dev_attr.attr;
3ca8bc6d	154
03b77d81	155	++adapter->ixgbe_hwmon_buff->n_hwmon;
3ca8bc6d	156
03b77d81	157	return 0;
3ca8bc6d	158	}
3ca8bc6d DS	159
	160	static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
	161	{
3ca8bc6d DS	162	}
	163
	164	/* called from ixgbe_main.c */
	165	void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
	166	{
	167	ixgbe_sysfs_del_adapter(adapter);
	168	}
	169
	170	/* called from ixgbe_main.c */
	171	int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
	172	{
03b77d81 GR	173	struct hwmon_buff *ixgbe_hwmon;
03b77d81 GR	174	struct device *hwmon_dev;
3ca8bc6d	175	unsigned int i;
3ca8bc6d DS	176	int rc = 0;
3ca8bc6d DS	177
3ca8bc6d DS	178	/* If this method isn't defined we don't support thermals */
3ca8bc6d DS	179	if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
1210982b	180	goto exit;
3ca8bc6d DS	181	}
	182
	183	/* Don't create thermal hwmon interface if no sensors present */
1210982b DS	184	if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
1210982b DS	185	goto exit;
3ca8bc6d	186
03b77d81 GR	187	ixgbe_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*ixgbe_hwmon),
	188	GFP_KERNEL);
	189	if (ixgbe_hwmon == NULL) {
3ca8bc6d	190	rc = -ENOMEM;
03b77d81	191	goto exit;
3ca8bc6d	192	}
03b77d81	193	adapter->ixgbe_hwmon_buff = ixgbe_hwmon;
3ca8bc6d DS	194
	195	for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
	196	/*
	197	* Only create hwmon sysfs entries for sensors that have
	198	* meaningful data for.
	199	*/
	200	if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
	201	continue;
	202
	203	/* Bail if any hwmon attr struct fails to initialize */
	204	rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION);
3ca8bc6d	205	if (rc)
03b77d81 GR	206	goto exit;
	207	rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC);
	208	if (rc)
	209	goto exit;
	210	rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP);
	211	if (rc)
	212	goto exit;
	213	rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX);
	214	if (rc)
	215	goto exit;
3ca8bc6d	216	}
3ca8bc6d	217
03b77d81 GR	218	ixgbe_hwmon->groups[0] = &ixgbe_hwmon->group;
03b77d81 GR	219	ixgbe_hwmon->group.attrs = ixgbe_hwmon->attrs;
3ca8bc6d	220
03b77d81 GR	221	hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
	222	"ixgbe",
	223	ixgbe_hwmon,
	224	ixgbe_hwmon->groups);
	225	if (IS_ERR(hwmon_dev))
	226	rc = PTR_ERR(hwmon_dev);
3ca8bc6d DS	227	exit:
	228	return rc;
	229	}
	230