[deliverable/linux.git] / drivers / net / ethernet / intel / igb / igb_hwmon.c

/* Intel(R) Gigabit Ethernet Linux driver
 * Copyright(c) 2007-2014 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, see <http://www.gnu.org/licenses/>.
 *
 * 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 "igb.h"
#include "e1000_82575.h"
#include "e1000_hw.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>
#include <linux/pci.h>

#ifdef CONFIG_IGB_HWMON
static struct i2c_board_info i350_sensor_info = {
	I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)),
};

/* hwmon callback functions */
static ssize_t igb_hwmon_show_location(struct device *dev,
				       struct device_attribute *attr,
				       char *buf)
{
	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
						   dev_attr);
	return sprintf(buf, "loc%u\n",
		       igb_attr->sensor->location);
}

static ssize_t igb_hwmon_show_temp(struct device *dev,
				   struct device_attribute *attr,
				   char *buf)
{
	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
						   dev_attr);
	unsigned int value;

	/* reset the temp field */
	igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw);

	value = igb_attr->sensor->temp;

	/* display millidegree */
	value *= 1000;

	return sprintf(buf, "%u\n", value);
}

static ssize_t igb_hwmon_show_cautionthresh(struct device *dev,
					    struct device_attribute *attr,
					    char *buf)
{
	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
						   dev_attr);
	unsigned int value = igb_attr->sensor->caution_thresh;

	/* display millidegree */
	value *= 1000;

	return sprintf(buf, "%u\n", value);
}

static ssize_t igb_hwmon_show_maxopthresh(struct device *dev,
					  struct device_attribute *attr,
					  char *buf)
{
	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
						   dev_attr);
	unsigned int value = igb_attr->sensor->max_op_thresh;

	/* display millidegree */
	value *= 1000;

	return sprintf(buf, "%u\n", value);
}

/* igb_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 igb_add_hwmon_attr(struct igb_adapter *adapter,
			      unsigned int offset, int type)
{
	int rc;
	unsigned int n_attr;
	struct hwmon_attr *igb_attr;

	n_attr = adapter->igb_hwmon_buff->n_hwmon;
	igb_attr = &adapter->igb_hwmon_buff->hwmon_list[n_attr];

	switch (type) {
	case IGB_HWMON_TYPE_LOC:
		igb_attr->dev_attr.show = igb_hwmon_show_location;
		snprintf(igb_attr->name, sizeof(igb_attr->name),
			 "temp%u_label", offset + 1);
		break;
	case IGB_HWMON_TYPE_TEMP:
		igb_attr->dev_attr.show = igb_hwmon_show_temp;
		snprintf(igb_attr->name, sizeof(igb_attr->name),
			 "temp%u_input", offset + 1);
		break;
	case IGB_HWMON_TYPE_CAUTION:
		igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh;
		snprintf(igb_attr->name, sizeof(igb_attr->name),
			 "temp%u_max", offset + 1);
		break;
	case IGB_HWMON_TYPE_MAX:
		igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh;
		snprintf(igb_attr->name, sizeof(igb_attr->name),
			 "temp%u_crit", offset + 1);
		break;
	default:
		rc = -EPERM;
		return rc;
	}

	/* These always the same regardless of type */
	igb_attr->sensor =
		&adapter->hw.mac.thermal_sensor_data.sensor[offset];
	igb_attr->hw = &adapter->hw;
	igb_attr->dev_attr.store = NULL;
	igb_attr->dev_attr.attr.mode = S_IRUGO;
	igb_attr->dev_attr.attr.name = igb_attr->name;
	sysfs_attr_init(&igb_attr->dev_attr.attr);

	adapter->igb_hwmon_buff->attrs[n_attr] = &igb_attr->dev_attr.attr;

	++adapter->igb_hwmon_buff->n_hwmon;

	return 0;
}

static void igb_sysfs_del_adapter(struct igb_adapter *adapter)
{
}

/* called from igb_main.c */
void igb_sysfs_exit(struct igb_adapter *adapter)
{
	igb_sysfs_del_adapter(adapter);
}

/* called from igb_main.c */
int igb_sysfs_init(struct igb_adapter *adapter)
{
	struct hwmon_buff *igb_hwmon;
	struct i2c_client *client;
	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 */
	rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw));
	if (rc)
		goto exit;

	igb_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*igb_hwmon),
				 GFP_KERNEL);
	if (!igb_hwmon) {
		rc = -ENOMEM;
		goto exit;
	}
	adapter->igb_hwmon_buff = igb_hwmon;

	for (i = 0; i < E1000_MAX_SENSORS; i++) {

		/* Only create hwmon sysfs entries for sensors that have
		 * meaningful data.
		 */
		if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
			continue;

		/* Bail if any hwmon attr struct fails to initialize */
		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION);
		if (rc)
			goto exit;
		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC);
		if (rc)
			goto exit;
		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP);
		if (rc)
			goto exit;
		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX);
		if (rc)
			goto exit;
	}

	/* init i2c_client */
	client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info);
	if (client == NULL) {
		dev_info(&adapter->pdev->dev,
			 "Failed to create new i2c device.\n");
		rc = -ENODEV;
		goto exit;
	}
	adapter->i2c_client = client;

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

	hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
							   client->name,
							   igb_hwmon,
							   igb_hwmon->groups);
	if (IS_ERR(hwmon_dev)) {
		rc = PTR_ERR(hwmon_dev);
		goto err;
	}

	goto exit;

err:
	igb_sysfs_del_adapter(adapter);
exit:
	return rc;
}
#endif
Commit	Line	Data
e52c0f96 CW	1	/* Intel(R) Gigabit Ethernet Linux driver
	2	* Copyright(c) 2007-2014 Intel Corporation.
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms and conditions of the GNU General Public License,
	6	* version 2, as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program; if not, see <http://www.gnu.org/licenses/>.
	15	*
	16	* The full GNU General Public License is included in this distribution in
	17	* the file called "COPYING".
	18	*
	19	* Contact Information:
	20	* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
	21	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	22	*/
e428893b CW	23
	24	#include "igb.h"
	25	#include "e1000_82575.h"
	26	#include "e1000_hw.h"
	27
	28	#include <linux/module.h>
	29	#include <linux/types.h>
	30	#include <linux/sysfs.h>
	31	#include <linux/kobject.h>
	32	#include <linux/device.h>
	33	#include <linux/netdevice.h>
	34	#include <linux/hwmon.h>
	35	#include <linux/pci.h>
	36
	37	#ifdef CONFIG_IGB_HWMON
05ec29e8	38	static struct i2c_board_info i350_sensor_info = {
603e86fa CW	39	I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)),
	40	};
	41
e428893b CW	42	/* hwmon callback functions */
e428893b CW	43	static ssize_t igb_hwmon_show_location(struct device *dev,
b980ac18 JK	44	struct device_attribute *attr,
b980ac18 JK	45	char *buf)
e428893b CW	46	{
e428893b CW	47	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
b980ac18	48	dev_attr);
e428893b CW	49	return sprintf(buf, "loc%u\n",
	50	igb_attr->sensor->location);
	51	}
	52
	53	static ssize_t igb_hwmon_show_temp(struct device *dev,
b980ac18 JK	54	struct device_attribute *attr,
b980ac18 JK	55	char *buf)
e428893b CW	56	{
e428893b CW	57	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
b980ac18	58	dev_attr);
e428893b CW	59	unsigned int value;
	60
	61	/* reset the temp field */
	62	igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw);
	63
	64	value = igb_attr->sensor->temp;
	65
	66	/* display millidegree */
	67	value *= 1000;
	68
	69	return sprintf(buf, "%u\n", value);
	70	}
	71
	72	static ssize_t igb_hwmon_show_cautionthresh(struct device *dev,
b980ac18 JK	73	struct device_attribute *attr,
b980ac18 JK	74	char *buf)
e428893b CW	75	{
e428893b CW	76	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
b980ac18	77	dev_attr);
e428893b CW	78	unsigned int value = igb_attr->sensor->caution_thresh;
	79
	80	/* display millidegree */
	81	value *= 1000;
	82
	83	return sprintf(buf, "%u\n", value);
	84	}
	85
	86	static ssize_t igb_hwmon_show_maxopthresh(struct device *dev,
b980ac18 JK	87	struct device_attribute *attr,
b980ac18 JK	88	char *buf)
e428893b CW	89	{
e428893b CW	90	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
b980ac18	91	dev_attr);
e428893b CW	92	unsigned int value = igb_attr->sensor->max_op_thresh;
	93
	94	/* display millidegree */
	95	value *= 1000;
	96
	97	return sprintf(buf, "%u\n", value);
	98	}
	99
	100	/* igb_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
	101	* @ adapter: pointer to the adapter structure
	102	* @ offset: offset in the eeprom sensor data table
	103	* @ type: type of sensor data to display
	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 igb_add_hwmon_attr(struct igb_adapter *adapter,
b980ac18 JK	110	unsigned int offset, int type)
b980ac18 JK	111	{
e428893b CW	112	int rc;
	113	unsigned int n_attr;
	114	struct hwmon_attr *igb_attr;
	115
e3670b81 GR	116	n_attr = adapter->igb_hwmon_buff->n_hwmon;
e3670b81 GR	117	igb_attr = &adapter->igb_hwmon_buff->hwmon_list[n_attr];
e428893b CW	118
	119	switch (type) {
	120	case IGB_HWMON_TYPE_LOC:
	121	igb_attr->dev_attr.show = igb_hwmon_show_location;
	122	snprintf(igb_attr->name, sizeof(igb_attr->name),
e6e25bba	123	"temp%u_label", offset + 1);
e428893b CW	124	break;
	125	case IGB_HWMON_TYPE_TEMP:
	126	igb_attr->dev_attr.show = igb_hwmon_show_temp;
	127	snprintf(igb_attr->name, sizeof(igb_attr->name),
e6e25bba	128	"temp%u_input", offset + 1);
e428893b CW	129	break;
	130	case IGB_HWMON_TYPE_CAUTION:
	131	igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh;
	132	snprintf(igb_attr->name, sizeof(igb_attr->name),
e6e25bba	133	"temp%u_max", offset + 1);
e428893b CW	134	break;
	135	case IGB_HWMON_TYPE_MAX:
	136	igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh;
	137	snprintf(igb_attr->name, sizeof(igb_attr->name),
e6e25bba	138	"temp%u_crit", offset + 1);
e428893b CW	139	break;
	140	default:
	141	rc = -EPERM;
	142	return rc;
	143	}
	144
	145	/* These always the same regardless of type */
	146	igb_attr->sensor =
	147	&adapter->hw.mac.thermal_sensor_data.sensor[offset];
	148	igb_attr->hw = &adapter->hw;
	149	igb_attr->dev_attr.store = NULL;
	150	igb_attr->dev_attr.attr.mode = S_IRUGO;
	151	igb_attr->dev_attr.attr.name = igb_attr->name;
	152	sysfs_attr_init(&igb_attr->dev_attr.attr);
e428893b	153
e3670b81 GR	154	adapter->igb_hwmon_buff->attrs[n_attr] = &igb_attr->dev_attr.attr;
	155
	156	++adapter->igb_hwmon_buff->n_hwmon;
	157
	158	return 0;
e428893b CW	159	}
	160
	161	static void igb_sysfs_del_adapter(struct igb_adapter *adapter)
	162	{
e428893b CW	163	}
	164
	165	/* called from igb_main.c */
	166	void igb_sysfs_exit(struct igb_adapter *adapter)
	167	{
	168	igb_sysfs_del_adapter(adapter);
	169	}
	170
	171	/* called from igb_main.c */
	172	int igb_sysfs_init(struct igb_adapter *adapter)
	173	{
e3670b81 GR	174	struct hwmon_buff *igb_hwmon;
	175	struct i2c_client *client;
	176	struct device *hwmon_dev;
e428893b	177	unsigned int i;
e428893b CW	178	int rc = 0;
	179
	180	/* If this method isn't defined we don't support thermals */
	181	if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL)
	182	goto exit;
	183
	184	/* Don't create thermal hwmon interface if no sensors present */
	185	rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw));
e3670b81	186	if (rc)
603e86fa	187	goto exit;
603e86fa	188
e3670b81 GR	189	igb_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*igb_hwmon),
	190	GFP_KERNEL);
	191	if (!igb_hwmon) {
e428893b	192	rc = -ENOMEM;
e3670b81	193	goto exit;
e428893b	194	}
e3670b81	195	adapter->igb_hwmon_buff = igb_hwmon;
e428893b CW	196
	197	for (i = 0; i < E1000_MAX_SENSORS; i++) {
	198
	199	/* Only create hwmon sysfs entries for sensors that have
	200	* meaningful data.
	201	*/
	202	if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
	203	continue;
	204
	205	/* Bail if any hwmon attr struct fails to initialize */
	206	rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION);
e428893b	207	if (rc)
e3670b81 GR	208	goto exit;
	209	rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC);
	210	if (rc)
	211	goto exit;
	212	rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP);
	213	if (rc)
	214	goto exit;
	215	rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX);
	216	if (rc)
	217	goto exit;
	218	}
	219
	220	/* init i2c_client */
	221	client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info);
	222	if (client == NULL) {
	223	dev_info(&adapter->pdev->dev,
	224	"Failed to create new i2c device.\n");
	225	rc = -ENODEV;
	226	goto exit;
	227	}
	228	adapter->i2c_client = client;
	229
	230	igb_hwmon->groups[0] = &igb_hwmon->group;
	231	igb_hwmon->group.attrs = igb_hwmon->attrs;
	232
	233	hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
	234	client->name,
	235	igb_hwmon,
	236	igb_hwmon->groups);
	237	if (IS_ERR(hwmon_dev)) {
	238	rc = PTR_ERR(hwmon_dev);
	239	goto err;
e428893b CW	240	}
	241
	242	goto exit;
	243
	244	err:
	245	igb_sysfs_del_adapter(adapter);
	246	exit:
	247	return rc;
	248	}
	249	#endif