[linux-2.6-block.git] / drivers / hwmon / k8temp.c

/*
 * k8temp.c - Linux kernel module for hardware monitoring
 *
 * Copyright (C) 2006 Rudolf Marek <r.marek@assembler.cz>
 *
 * Inspired from the w83785 and amd756 drivers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that 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 Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/pci.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <asm/processor.h>

#define TEMP_FROM_REG(val)	(((((val) >> 16) & 0xff) - 49) * 1000)
#define REG_TEMP	0xe4
#define SEL_PLACE	0x40
#define SEL_CORE	0x04

struct k8temp_data {
	struct device *hwmon_dev;
	struct mutex update_lock;
	const char *name;
	char valid;		/* zero until following fields are valid */
	unsigned long last_updated;	/* in jiffies */

	/* registers values */
	u8 sensorsp;		/* sensor presence bits - SEL_CORE & SEL_PLACE */
	u32 temp[2][2];		/* core, place */
	u8 swap_core_select;    /* meaning of SEL_CORE is inverted */
};

static struct k8temp_data *k8temp_update_device(struct device *dev)
{
	struct k8temp_data *data = dev_get_drvdata(dev);
	struct pci_dev *pdev = to_pci_dev(dev);
	u8 tmp;

	mutex_lock(&data->update_lock);

	if (!data->valid
	    || time_after(jiffies, data->last_updated + HZ)) {
		pci_read_config_byte(pdev, REG_TEMP, &tmp);
		tmp &= ~(SEL_PLACE | SEL_CORE);		/* Select sensor 0, core0 */
		pci_write_config_byte(pdev, REG_TEMP, tmp);
		pci_read_config_dword(pdev, REG_TEMP, &data->temp[0][0]);

		if (data->sensorsp & SEL_PLACE) {
			tmp |= SEL_PLACE;	/* Select sensor 1, core0 */
			pci_write_config_byte(pdev, REG_TEMP, tmp);
			pci_read_config_dword(pdev, REG_TEMP,
					      &data->temp[0][1]);
		}

		if (data->sensorsp & SEL_CORE) {
			tmp &= ~SEL_PLACE;	/* Select sensor 0, core1 */
			tmp |= SEL_CORE;
			pci_write_config_byte(pdev, REG_TEMP, tmp);
			pci_read_config_dword(pdev, REG_TEMP,
					      &data->temp[1][0]);

			if (data->sensorsp & SEL_PLACE) {
				tmp |= SEL_PLACE;	/* Select sensor 1, core1 */
				pci_write_config_byte(pdev, REG_TEMP, tmp);
				pci_read_config_dword(pdev, REG_TEMP,
						      &data->temp[1][1]);
			}
		}

		data->last_updated = jiffies;
		data->valid = 1;
	}

	mutex_unlock(&data->update_lock);
	return data;
}

/*
 * Sysfs stuff
 */

static ssize_t show_name(struct device *dev, struct device_attribute
			 *devattr, char *buf)
{
	struct k8temp_data *data = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", data->name);
}


static ssize_t show_temp(struct device *dev,
			 struct device_attribute *devattr, char *buf)
{
	struct sensor_device_attribute_2 *attr =
	    to_sensor_dev_attr_2(devattr);
	int core = attr->nr;
	int place = attr->index;
	struct k8temp_data *data = k8temp_update_device(dev);

	if (data->swap_core_select)
		core = core ? 0 : 1;

	return sprintf(buf, "%d\n",
		       TEMP_FROM_REG(data->temp[core][place]));
}

/* core, place */

static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1);
static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 1, 0);
static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 1, 1);
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);

static struct pci_device_id k8temp_ids[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) },
	{ 0 },
};

MODULE_DEVICE_TABLE(pci, k8temp_ids);

static int __devinit k8temp_probe(struct pci_dev *pdev,
				  const struct pci_device_id *id)
{
	int err;
	u8 scfg;
	u32 temp;
	u8 model, stepping;
	struct k8temp_data *data;

	if (!(data = kzalloc(sizeof(struct k8temp_data), GFP_KERNEL))) {
		err = -ENOMEM;
		goto exit;
	}

	model = boot_cpu_data.x86_model;
	stepping = boot_cpu_data.x86_mask;

	switch (boot_cpu_data.x86) {
	case 0xf:
		/* feature available since SH-C0, exclude older revisions */
		if (((model == 4) && (stepping == 0)) ||
		    ((model == 5) && (stepping <= 1))) {
			err = -ENODEV;
			goto exit_free;
		}

		/*
		 * AMD NPT family 0fh, i.e. RevF and RevG:
		 * meaning of SEL_CORE bit is inverted
		 */
		if (model >= 0x40) {
			data->swap_core_select = 1;
			dev_warn(&pdev->dev, "Temperature readouts might be "
				 "wrong - check erratum #141\n");
		}

		break;
	}

	pci_read_config_byte(pdev, REG_TEMP, &scfg);
	scfg &= ~(SEL_PLACE | SEL_CORE);		/* Select sensor 0, core0 */
	pci_write_config_byte(pdev, REG_TEMP, scfg);
	pci_read_config_byte(pdev, REG_TEMP, &scfg);

	if (scfg & (SEL_PLACE | SEL_CORE)) {
		dev_err(&pdev->dev, "Configuration bit(s) stuck at 1!\n");
		err = -ENODEV;
		goto exit_free;
	}

	scfg |= (SEL_PLACE | SEL_CORE);
	pci_write_config_byte(pdev, REG_TEMP, scfg);

	/* now we know if we can change core and/or sensor */
	pci_read_config_byte(pdev, REG_TEMP, &data->sensorsp);

	if (data->sensorsp & SEL_PLACE) {
		scfg &= ~SEL_CORE;	/* Select sensor 1, core0 */
		pci_write_config_byte(pdev, REG_TEMP, scfg);
		pci_read_config_dword(pdev, REG_TEMP, &temp);
		scfg |= SEL_CORE;	/* prepare for next selection */
		if (!((temp >> 16) & 0xff))	/* if temp is 0 -49C is not likely */
			data->sensorsp &= ~SEL_PLACE;
	}

	if (data->sensorsp & SEL_CORE) {
		scfg &= ~SEL_PLACE;	/* Select sensor 0, core1 */
		pci_write_config_byte(pdev, REG_TEMP, scfg);
		pci_read_config_dword(pdev, REG_TEMP, &temp);
		if (!((temp >> 16) & 0xff))	/* if temp is 0 -49C is not likely */
			data->sensorsp &= ~SEL_CORE;
	}

	data->name = "k8temp";
	mutex_init(&data->update_lock);
	dev_set_drvdata(&pdev->dev, data);

	/* Register sysfs hooks */
	err = device_create_file(&pdev->dev,
			   &sensor_dev_attr_temp1_input.dev_attr);
	if (err)
		goto exit_remove;

	/* sensor can be changed and reports something */
	if (data->sensorsp & SEL_PLACE) {
		err = device_create_file(&pdev->dev,
				   &sensor_dev_attr_temp2_input.dev_attr);
		if (err)
			goto exit_remove;
	}

	/* core can be changed and reports something */
	if (data->sensorsp & SEL_CORE) {
		err = device_create_file(&pdev->dev,
				   &sensor_dev_attr_temp3_input.dev_attr);
		if (err)
			goto exit_remove;
		if (data->sensorsp & SEL_PLACE)
			err = device_create_file(&pdev->dev,
					   &sensor_dev_attr_temp4_input.
					   dev_attr);
			if (err)
				goto exit_remove;
	}

	err = device_create_file(&pdev->dev, &dev_attr_name);
	if (err)
		goto exit_remove;

	data->hwmon_dev = hwmon_device_register(&pdev->dev);

	if (IS_ERR(data->hwmon_dev)) {
		err = PTR_ERR(data->hwmon_dev);
		goto exit_remove;
	}

	return 0;

exit_remove:
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp1_input.dev_attr);
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp2_input.dev_attr);
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp3_input.dev_attr);
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp4_input.dev_attr);
	device_remove_file(&pdev->dev, &dev_attr_name);
exit_free:
	dev_set_drvdata(&pdev->dev, NULL);
	kfree(data);
exit:
	return err;
}

static void __devexit k8temp_remove(struct pci_dev *pdev)
{
	struct k8temp_data *data = dev_get_drvdata(&pdev->dev);

	hwmon_device_unregister(data->hwmon_dev);
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp1_input.dev_attr);
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp2_input.dev_attr);
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp3_input.dev_attr);
	device_remove_file(&pdev->dev,
			   &sensor_dev_attr_temp4_input.dev_attr);
	device_remove_file(&pdev->dev, &dev_attr_name);
	dev_set_drvdata(&pdev->dev, NULL);
	kfree(data);
}

static struct pci_driver k8temp_driver = {
	.name = "k8temp",
	.id_table = k8temp_ids,
	.probe = k8temp_probe,
	.remove = __devexit_p(k8temp_remove),
};

static int __init k8temp_init(void)
{
	return pci_register_driver(&k8temp_driver);
}

static void __exit k8temp_exit(void)
{
	pci_unregister_driver(&k8temp_driver);
}

MODULE_AUTHOR("Rudolf Marek <r.marek@assembler.cz>");
MODULE_DESCRIPTION("AMD K8 core temperature monitor");
MODULE_LICENSE("GPL");

module_init(k8temp_init)
module_exit(k8temp_exit)
Commit	Line	Data
29fa06c1 RM	1	/*
	2	* k8temp.c - Linux kernel module for hardware monitoring
	3	*
7188cc66	4	* Copyright (C) 2006 Rudolf Marek <r.marek@assembler.cz>
29fa06c1 RM	5	*
	6	* Inspired from the w83785 and amd756 drivers.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	21	* 02110-1301 USA.
	22	*/
	23
	24	#include <linux/module.h>
	25	#include <linux/delay.h>
	26	#include <linux/init.h>
	27	#include <linux/slab.h>
	28	#include <linux/jiffies.h>
	29	#include <linux/pci.h>
	30	#include <linux/hwmon.h>
	31	#include <linux/hwmon-sysfs.h>
	32	#include <linux/err.h>
	33	#include <linux/mutex.h>
bb9a35f2	34	#include <asm/processor.h>
29fa06c1 RM	35
	36	#define TEMP_FROM_REG(val) (((((val) >> 16) & 0xff) - 49) * 1000)
	37	#define REG_TEMP 0xe4
	38	#define SEL_PLACE 0x40
	39	#define SEL_CORE 0x04
	40
	41	struct k8temp_data {
1beeffe4	42	struct device *hwmon_dev;
29fa06c1 RM	43	struct mutex update_lock;
	44	const char *name;
	45	char valid; /* zero until following fields are valid */
	46	unsigned long last_updated; /* in jiffies */
	47
	48	/* registers values */
	49	u8 sensorsp; /* sensor presence bits - SEL_CORE & SEL_PLACE */
	50	u32 temp[2][2]; /* core, place */
a2e066bb	51	u8 swap_core_select; /* meaning of SEL_CORE is inverted */
29fa06c1 RM	52	};
	53
	54	static struct k8temp_data k8temp_update_device(struct device dev)
	55	{
	56	struct k8temp_data *data = dev_get_drvdata(dev);
	57	struct pci_dev *pdev = to_pci_dev(dev);
	58	u8 tmp;
	59
	60	mutex_lock(&data->update_lock);
	61
	62	if (!data->valid
	63	\|\| time_after(jiffies, data->last_updated + HZ)) {
	64	pci_read_config_byte(pdev, REG_TEMP, &tmp);
	65	tmp &= ~(SEL_PLACE \| SEL_CORE); /* Select sensor 0, core0 */
	66	pci_write_config_byte(pdev, REG_TEMP, tmp);
	67	pci_read_config_dword(pdev, REG_TEMP, &data->temp[0][0]);
	68
	69	if (data->sensorsp & SEL_PLACE) {
	70	tmp \|= SEL_PLACE; /* Select sensor 1, core0 */
	71	pci_write_config_byte(pdev, REG_TEMP, tmp);
	72	pci_read_config_dword(pdev, REG_TEMP,
	73	&data->temp[0][1]);
	74	}
	75
	76	if (data->sensorsp & SEL_CORE) {
	77	tmp &= ~SEL_PLACE; /* Select sensor 0, core1 */
	78	tmp \|= SEL_CORE;
	79	pci_write_config_byte(pdev, REG_TEMP, tmp);
	80	pci_read_config_dword(pdev, REG_TEMP,
	81	&data->temp[1][0]);
	82
	83	if (data->sensorsp & SEL_PLACE) {
	84	tmp \|= SEL_PLACE; /* Select sensor 1, core1 */
	85	pci_write_config_byte(pdev, REG_TEMP, tmp);
	86	pci_read_config_dword(pdev, REG_TEMP,
	87	&data->temp[1][1]);
	88	}
	89	}
	90
	91	data->last_updated = jiffies;
	92	data->valid = 1;
	93	}
	94
	95	mutex_unlock(&data->update_lock);
	96	return data;
	97	}
	98
	99	/*
	100	* Sysfs stuff
	101	*/
	102
	103	static ssize_t show_name(struct device *dev, struct device_attribute
	104	devattr, char buf)
	105	{
	106	struct k8temp_data *data = dev_get_drvdata(dev);
	107
	108	return sprintf(buf, "%s\n", data->name);
	109	}
	110
	111
	112	static ssize_t show_temp(struct device *dev,
	113	struct device_attribute devattr, char buf)
	114	{
	115	struct sensor_device_attribute_2 *attr =
116	to_sensor_dev_attr_2(devattr);
117	int core = attr->nr;
118	int place = attr->index;
119	struct k8temp_data *data = k8temp_update_device(dev);
120
a2e066bb AH	121	if (data->swap_core_select)
	122	core = core ? 0 : 1;
	123
29fa06c1 RM	124	return sprintf(buf, "%d\n",
	125	TEMP_FROM_REG(data->temp[core][place]));
	126	}
	127
	128	/* core, place */
	129
	130	static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
	131	static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1);
	132	static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 1, 0);
	133	static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 1, 1);
	134	static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
	135
	136	static struct pci_device_id k8temp_ids[] = {
	137	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) },
	138	{ 0 },
	139	};
	140
b17ebc94 JD	141	MODULE_DEVICE_TABLE(pci, k8temp_ids);
b17ebc94 JD	142
29fa06c1 RM	143	static int __devinit k8temp_probe(struct pci_dev *pdev,
	144	const struct pci_device_id *id)
	145	{
	146	int err;
	147	u8 scfg;
	148	u32 temp;
bb9a35f2	149	u8 model, stepping;
29fa06c1	150	struct k8temp_data *data;
29fa06c1 RM	151
	152	if (!(data = kzalloc(sizeof(struct k8temp_data), GFP_KERNEL))) {
	153	err = -ENOMEM;
	154	goto exit;
	155	}
	156
bb9a35f2 AH	157	model = boot_cpu_data.x86_model;
	158	stepping = boot_cpu_data.x86_mask;
	159
	160	switch (boot_cpu_data.x86) {
	161	case 0xf:
	162	/* feature available since SH-C0, exclude older revisions */
	163	if (((model == 4) && (stepping == 0)) \|\|
	164	((model == 5) && (stepping <= 1))) {
	165	err = -ENODEV;
	166	goto exit_free;
	167	}
	168
a2e066bb AH	169	/*
	170	* AMD NPT family 0fh, i.e. RevF and RevG:
	171	* meaning of SEL_CORE bit is inverted
	172	*/
bb9a35f2	173	if (model >= 0x40) {
a2e066bb	174	data->swap_core_select = 1;
bb9a35f2 AH	175	dev_warn(&pdev->dev, "Temperature readouts might be "
	176	"wrong - check erratum #141\n");
	177	}
	178
	179	break;
	180	}
	181
29fa06c1 RM	182	pci_read_config_byte(pdev, REG_TEMP, &scfg);
	183	scfg &= ~(SEL_PLACE \| SEL_CORE); /* Select sensor 0, core0 */
	184	pci_write_config_byte(pdev, REG_TEMP, scfg);
	185	pci_read_config_byte(pdev, REG_TEMP, &scfg);
	186
	187	if (scfg & (SEL_PLACE \| SEL_CORE)) {
	188	dev_err(&pdev->dev, "Configuration bit(s) stuck at 1!\n");
	189	err = -ENODEV;
	190	goto exit_free;
	191	}
	192
	193	scfg \|= (SEL_PLACE \| SEL_CORE);
	194	pci_write_config_byte(pdev, REG_TEMP, scfg);
	195
	196	/* now we know if we can change core and/or sensor */
	197	pci_read_config_byte(pdev, REG_TEMP, &data->sensorsp);
	198
	199	if (data->sensorsp & SEL_PLACE) {
	200	scfg &= ~SEL_CORE; /* Select sensor 1, core0 */
	201	pci_write_config_byte(pdev, REG_TEMP, scfg);
	202	pci_read_config_dword(pdev, REG_TEMP, &temp);
	203	scfg \|= SEL_CORE; /* prepare for next selection */
	204	if (!((temp >> 16) & 0xff)) /* if temp is 0 -49C is not likely */
	205	data->sensorsp &= ~SEL_PLACE;
	206	}
	207
	208	if (data->sensorsp & SEL_CORE) {
	209	scfg &= ~SEL_PLACE; /* Select sensor 0, core1 */
	210	pci_write_config_byte(pdev, REG_TEMP, scfg);
	211	pci_read_config_dword(pdev, REG_TEMP, &temp);
	212	if (!((temp >> 16) & 0xff)) /* if temp is 0 -49C is not likely */
	213	data->sensorsp &= ~SEL_CORE;
	214	}
	215
	216	data->name = "k8temp";
	217	mutex_init(&data->update_lock);
	218	dev_set_drvdata(&pdev->dev, data);
	219
	220	/* Register sysfs hooks */
	221	err = device_create_file(&pdev->dev,
	222	&sensor_dev_attr_temp1_input.dev_attr);
	223	if (err)
	224	goto exit_remove;
	225
	226	/* sensor can be changed and reports something */
	227	if (data->sensorsp & SEL_PLACE) {
	228	err = device_create_file(&pdev->dev,
	229	&sensor_dev_attr_temp2_input.dev_attr);
	230	if (err)
	231	goto exit_remove;
	232	}
	233
	234	/* core can be changed and reports something */
	235	if (data->sensorsp & SEL_CORE) {
	236	err = device_create_file(&pdev->dev,
	237	&sensor_dev_attr_temp3_input.dev_attr);
	238	if (err)
	239	goto exit_remove;
	240	if (data->sensorsp & SEL_PLACE)
	241	err = device_create_file(&pdev->dev,
	242	&sensor_dev_attr_temp4_input.
	243	dev_attr);
	244	if (err)
	245	goto exit_remove;
246	}
247
248	err = device_create_file(&pdev->dev, &dev_attr_name);
249	if (err)
250	goto exit_remove;
251
1beeffe4	252	data->hwmon_dev = hwmon_device_register(&pdev->dev);
29fa06c1	253
1beeffe4 TJ	254	if (IS_ERR(data->hwmon_dev)) {
1beeffe4 TJ	255	err = PTR_ERR(data->hwmon_dev);
29fa06c1 RM	256	goto exit_remove;
	257	}
	258
	259	return 0;
	260
	261	exit_remove:
	262	device_remove_file(&pdev->dev,
	263	&sensor_dev_attr_temp1_input.dev_attr);
	264	device_remove_file(&pdev->dev,
	265	&sensor_dev_attr_temp2_input.dev_attr);
	266	device_remove_file(&pdev->dev,
	267	&sensor_dev_attr_temp3_input.dev_attr);
	268	device_remove_file(&pdev->dev,
	269	&sensor_dev_attr_temp4_input.dev_attr);
	270	device_remove_file(&pdev->dev, &dev_attr_name);
	271	exit_free:
	272	dev_set_drvdata(&pdev->dev, NULL);
	273	kfree(data);
	274	exit:
	275	return err;
	276	}
	277
	278	static void __devexit k8temp_remove(struct pci_dev *pdev)
	279	{
	280	struct k8temp_data *data = dev_get_drvdata(&pdev->dev);
	281
1beeffe4	282	hwmon_device_unregister(data->hwmon_dev);
29fa06c1 RM	283	device_remove_file(&pdev->dev,
	284	&sensor_dev_attr_temp1_input.dev_attr);
	285	device_remove_file(&pdev->dev,
	286	&sensor_dev_attr_temp2_input.dev_attr);
	287	device_remove_file(&pdev->dev,
	288	&sensor_dev_attr_temp3_input.dev_attr);
	289	device_remove_file(&pdev->dev,
	290	&sensor_dev_attr_temp4_input.dev_attr);
	291	device_remove_file(&pdev->dev, &dev_attr_name);
	292	dev_set_drvdata(&pdev->dev, NULL);
	293	kfree(data);
	294	}
	295
	296	static struct pci_driver k8temp_driver = {
	297	.name = "k8temp",
	298	.id_table = k8temp_ids,
	299	.probe = k8temp_probe,
	300	.remove = __devexit_p(k8temp_remove),
	301	};
	302
	303	static int __init k8temp_init(void)
	304	{
	305	return pci_register_driver(&k8temp_driver);
	306	}
	307
	308	static void __exit k8temp_exit(void)
	309	{
	310	pci_unregister_driver(&k8temp_driver);
	311	}
	312
7188cc66	313	MODULE_AUTHOR("Rudolf Marek <r.marek@assembler.cz>");
29fa06c1 RM	314	MODULE_DESCRIPTION("AMD K8 core temperature monitor");
	315	MODULE_LICENSE("GPL");
	316
	317	module_init(k8temp_init)
	318	module_exit(k8temp_exit)