mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 03:06:10 +00:00
hwmon: New driver for AMD Family 10h/11h CPUs
This adds a driver for the internal temperature sensor of AMD Family 10h and 11h CPUs. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Clemens Ladisch
Jean Delvare
parent
8bea8672ed
commit
3c57e89b46
4 changed files with 270 additions and 0 deletions
60
Documentation/hwmon/k10temp
Normal file
60
Documentation/hwmon/k10temp
Normal file
|
|
@ -0,0 +1,60 @@
|
|||
Kernel driver k10temp
|
||||
=====================
|
||||
|
||||
Supported chips:
|
||||
* AMD Family 10h processors:
|
||||
Socket F: Quad-Core/Six-Core/Embedded Opteron
|
||||
Socket AM2+: Opteron, Phenom (II) X3/X4
|
||||
Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II
|
||||
Socket S1G3: Athlon II, Sempron, Turion II
|
||||
* AMD Family 11h processors:
|
||||
Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
|
||||
|
||||
Prefix: 'k10temp'
|
||||
Addresses scanned: PCI space
|
||||
Datasheets:
|
||||
BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors:
|
||||
http://support.amd.com/us/Processor_TechDocs/31116.pdf
|
||||
BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors:
|
||||
http://support.amd.com/us/Processor_TechDocs/41256.pdf
|
||||
Revision Guide for AMD Family 10h Processors:
|
||||
http://support.amd.com/us/Processor_TechDocs/41322.pdf
|
||||
Revision Guide for AMD Family 11h Processors:
|
||||
http://support.amd.com/us/Processor_TechDocs/41788.pdf
|
||||
AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks:
|
||||
http://support.amd.com/us/Processor_TechDocs/43373.pdf
|
||||
AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet:
|
||||
http://support.amd.com/us/Processor_TechDocs/43374.pdf
|
||||
AMD Family 10h Desktop Processor Power and Thermal Data Sheet:
|
||||
http://support.amd.com/us/Processor_TechDocs/43375.pdf
|
||||
|
||||
Author: Clemens Ladisch <clemens@ladisch.de>
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This driver permits reading of the internal temperature sensor of AMD
|
||||
Family 10h and 11h processors.
|
||||
|
||||
All these processors have a sensor, but on older revisions of Family 10h
|
||||
processors, the sensor may return inconsistent values (erratum 319). The
|
||||
driver will refuse to load on these revisions unless you specify the
|
||||
"force=1" module parameter.
|
||||
|
||||
There is one temperature measurement value, available as temp1_input in
|
||||
sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree.
|
||||
Please note that it is defined as a relative value; to quote the AMD manual:
|
||||
|
||||
Tctl is the processor temperature control value, used by the platform to
|
||||
control cooling systems. Tctl is a non-physical temperature on an
|
||||
arbitrary scale measured in degrees. It does _not_ represent an actual
|
||||
physical temperature like die or case temperature. Instead, it specifies
|
||||
the processor temperature relative to the point at which the system must
|
||||
supply the maximum cooling for the processor's specified maximum case
|
||||
temperature and maximum thermal power dissipation.
|
||||
|
||||
The maximum value for Tctl is available in the file temp1_max.
|
||||
|
||||
If the BIOS has enabled hardware temperature control, the threshold at
|
||||
which the processor will throttle itself to avoid damage is available in
|
||||
temp1_crit and temp1_crit_hyst.
|
||||
|
|
@ -228,6 +228,18 @@ config SENSORS_K8TEMP
|
|||
This driver can also be built as a module. If so, the module
|
||||
will be called k8temp.
|
||||
|
||||
config SENSORS_K10TEMP
|
||||
tristate "AMD Phenom/Sempron/Turion/Opteron temperature sensor"
|
||||
depends on X86 && PCI
|
||||
help
|
||||
If you say yes here you get support for the temperature
|
||||
sensor(s) inside your CPU. Supported are later revisions of
|
||||
the AMD Family 10h and all revisions of the AMD Family 11h
|
||||
microarchitectures.
|
||||
|
||||
This driver can also be built as a module. If so, the module
|
||||
will be called k10temp.
|
||||
|
||||
config SENSORS_AMS
|
||||
tristate "Apple Motion Sensor driver"
|
||||
depends on PPC_PMAC && !PPC64 && INPUT && ((ADB_PMU && I2C = y) || (ADB_PMU && !I2C) || I2C) && EXPERIMENTAL
|
||||
|
|
|
|||
|
|
@ -53,6 +53,7 @@ obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o
|
|||
obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o
|
||||
obj-$(CONFIG_SENSORS_IT87) += it87.o
|
||||
obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o
|
||||
obj-$(CONFIG_SENSORS_K10TEMP) += k10temp.o
|
||||
obj-$(CONFIG_SENSORS_LIS3LV02D) += lis3lv02d.o hp_accel.o
|
||||
obj-$(CONFIG_SENSORS_LIS3_SPI) += lis3lv02d.o lis3lv02d_spi.o
|
||||
obj-$(CONFIG_SENSORS_LM63) += lm63.o
|
||||
|
|
|
|||
197
drivers/hwmon/k10temp.c
Normal file
197
drivers/hwmon/k10temp.c
Normal file
|
|
@ -0,0 +1,197 @@
|
|||
/*
|
||||
* k10temp.c - AMD Family 10h/11h processor hardware monitoring
|
||||
*
|
||||
* Copyright (c) 2009 Clemens Ladisch <clemens@ladisch.de>
|
||||
*
|
||||
*
|
||||
* This driver is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This driver 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 driver; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <linux/err.h>
|
||||
#include <linux/hwmon.h>
|
||||
#include <linux/hwmon-sysfs.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/pci.h>
|
||||
#include <asm/processor.h>
|
||||
|
||||
MODULE_DESCRIPTION("AMD Family 10h/11h CPU core temperature monitor");
|
||||
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
static bool force;
|
||||
module_param(force, bool, 0444);
|
||||
MODULE_PARM_DESC(force, "force loading on processors with erratum 319");
|
||||
|
||||
#define REG_HARDWARE_THERMAL_CONTROL 0x64
|
||||
#define HTC_ENABLE 0x00000001
|
||||
|
||||
#define REG_REPORTED_TEMPERATURE 0xa4
|
||||
|
||||
#define REG_NORTHBRIDGE_CAPABILITIES 0xe8
|
||||
#define NB_CAP_HTC 0x00000400
|
||||
|
||||
static ssize_t show_temp(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
u32 regval;
|
||||
|
||||
pci_read_config_dword(to_pci_dev(dev),
|
||||
REG_REPORTED_TEMPERATURE, ®val);
|
||||
return sprintf(buf, "%u\n", (regval >> 21) * 125);
|
||||
}
|
||||
|
||||
static ssize_t show_temp_max(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
return sprintf(buf, "%d\n", 70 * 1000);
|
||||
}
|
||||
|
||||
static ssize_t show_temp_crit(struct device *dev,
|
||||
struct device_attribute *devattr, char *buf)
|
||||
{
|
||||
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
||||
int show_hyst = attr->index;
|
||||
u32 regval;
|
||||
int value;
|
||||
|
||||
pci_read_config_dword(to_pci_dev(dev),
|
||||
REG_HARDWARE_THERMAL_CONTROL, ®val);
|
||||
value = ((regval >> 16) & 0x7f) * 500 + 52000;
|
||||
if (show_hyst)
|
||||
value -= ((regval >> 24) & 0xf) * 500;
|
||||
return sprintf(buf, "%d\n", value);
|
||||
}
|
||||
|
||||
static ssize_t show_name(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
return sprintf(buf, "k10temp\n");
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
|
||||
static DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL);
|
||||
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0);
|
||||
static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, show_temp_crit, NULL, 1);
|
||||
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
||||
|
||||
static bool __devinit has_erratum_319(void)
|
||||
{
|
||||
/*
|
||||
* Erratum 319: The thermal sensor of older Family 10h processors
|
||||
* (B steppings) may be unreliable.
|
||||
*/
|
||||
return boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model <= 2;
|
||||
}
|
||||
|
||||
static int __devinit k10temp_probe(struct pci_dev *pdev,
|
||||
const struct pci_device_id *id)
|
||||
{
|
||||
struct device *hwmon_dev;
|
||||
u32 reg_caps, reg_htc;
|
||||
int err;
|
||||
|
||||
if (has_erratum_319() && !force) {
|
||||
dev_err(&pdev->dev,
|
||||
"unreliable CPU thermal sensor; monitoring disabled\n");
|
||||
err = -ENODEV;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
err = device_create_file(&pdev->dev, &dev_attr_temp1_input);
|
||||
if (err)
|
||||
goto exit;
|
||||
err = device_create_file(&pdev->dev, &dev_attr_temp1_max);
|
||||
if (err)
|
||||
goto exit_remove;
|
||||
|
||||
pci_read_config_dword(pdev, REG_NORTHBRIDGE_CAPABILITIES, ®_caps);
|
||||
pci_read_config_dword(pdev, REG_HARDWARE_THERMAL_CONTROL, ®_htc);
|
||||
if ((reg_caps & NB_CAP_HTC) && (reg_htc & HTC_ENABLE)) {
|
||||
err = device_create_file(&pdev->dev,
|
||||
&sensor_dev_attr_temp1_crit.dev_attr);
|
||||
if (err)
|
||||
goto exit_remove;
|
||||
err = device_create_file(&pdev->dev,
|
||||
&sensor_dev_attr_temp1_crit_hyst.dev_attr);
|
||||
if (err)
|
||||
goto exit_remove;
|
||||
}
|
||||
|
||||
err = device_create_file(&pdev->dev, &dev_attr_name);
|
||||
if (err)
|
||||
goto exit_remove;
|
||||
|
||||
hwmon_dev = hwmon_device_register(&pdev->dev);
|
||||
if (IS_ERR(hwmon_dev)) {
|
||||
err = PTR_ERR(hwmon_dev);
|
||||
goto exit_remove;
|
||||
}
|
||||
dev_set_drvdata(&pdev->dev, hwmon_dev);
|
||||
|
||||
if (has_erratum_319() && force)
|
||||
dev_warn(&pdev->dev,
|
||||
"unreliable CPU thermal sensor; check erratum 319\n");
|
||||
return 0;
|
||||
|
||||
exit_remove:
|
||||
device_remove_file(&pdev->dev, &dev_attr_name);
|
||||
device_remove_file(&pdev->dev, &dev_attr_temp1_input);
|
||||
device_remove_file(&pdev->dev, &dev_attr_temp1_max);
|
||||
device_remove_file(&pdev->dev,
|
||||
&sensor_dev_attr_temp1_crit.dev_attr);
|
||||
device_remove_file(&pdev->dev,
|
||||
&sensor_dev_attr_temp1_crit_hyst.dev_attr);
|
||||
exit:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void __devexit k10temp_remove(struct pci_dev *pdev)
|
||||
{
|
||||
hwmon_device_unregister(dev_get_drvdata(&pdev->dev));
|
||||
device_remove_file(&pdev->dev, &dev_attr_name);
|
||||
device_remove_file(&pdev->dev, &dev_attr_temp1_input);
|
||||
device_remove_file(&pdev->dev, &dev_attr_temp1_max);
|
||||
device_remove_file(&pdev->dev,
|
||||
&sensor_dev_attr_temp1_crit.dev_attr);
|
||||
device_remove_file(&pdev->dev,
|
||||
&sensor_dev_attr_temp1_crit_hyst.dev_attr);
|
||||
dev_set_drvdata(&pdev->dev, NULL);
|
||||
}
|
||||
|
||||
static struct pci_device_id k10temp_id_table[] = {
|
||||
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_10H_NB_MISC) },
|
||||
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_11H_NB_MISC) },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(pci, k10temp_id_table);
|
||||
|
||||
static struct pci_driver k10temp_driver = {
|
||||
.name = "k10temp",
|
||||
.id_table = k10temp_id_table,
|
||||
.probe = k10temp_probe,
|
||||
.remove = __devexit_p(k10temp_remove),
|
||||
};
|
||||
|
||||
static int __init k10temp_init(void)
|
||||
{
|
||||
return pci_register_driver(&k10temp_driver);
|
||||
}
|
||||
|
||||
static void __exit k10temp_exit(void)
|
||||
{
|
||||
pci_unregister_driver(&k10temp_driver);
|
||||
}
|
||||
|
||||
module_init(k10temp_init)
|
||||
module_exit(k10temp_exit)
|
||||
Loading…
Reference in a new issue