mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 14:16:39 +07:00
1beeffe433
Convert from class_device to device for hwmon_device_register/unregister Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
295 lines
8.0 KiB
C
295 lines
8.0 KiB
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>
|
|
|
|
#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 */
|
|
};
|
|
|
|
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);
|
|
|
|
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;
|
|
struct k8temp_data *data;
|
|
u32 cpuid = cpuid_eax(1);
|
|
|
|
/* this feature should be available since SH-C0 core */
|
|
if ((cpuid == 0xf40) || (cpuid == 0xf50) || (cpuid == 0xf51)) {
|
|
err = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
if (!(data = kzalloc(sizeof(struct k8temp_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
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)
|