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hwmon: (k10temp) Add support for F15h M60h

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This patch adds temperature monitoring support for F15h M60h processor.
 - Add new pci device id for the relevant processor
 - The functionality of REG_REPORTED_TEMPERATURE is moved to
   D0F0xBC_xD820_0CA4 [Reported Temperature Control]
   - So, use this to get CUR_TEMP value
   - Since we need an indirect register access, protect this with
     a mutex lock
 - Add Kconfig, Doc entries to indicate support for this processor.

Signed-off-by: Aravind Gopalakrishnan <[email protected]>
Acked-by: Borislav Petkov <[email protected]>
Acked-by: Clemens Ladisch <[email protected]>
[Guenter Roeck: Declare new mutex and function static]
Signed-off-by: Guenter Roeck <[email protected]>
This commit is contained in:
Aravind Gopalakrishnan 2014-08-14 18:15:27 -05:00 • committed by Guenter Roeck
commit f89ce2706d
3 changed files with 35 additions and 6 deletions
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4
drivers/hwmon/Kconfig
View file

@ -280,8 +280,8 @@ config SENSORS_K10TEMP
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,
12h (Llano), 14h (Brazos), 15h (Bulldozer/Trinity/Kaveri) and
16h (Kabini/Mullins) microarchitectures.
12h (Llano), 14h (Brazos), 15h (Bulldozer/Trinity/Kaveri/Carrizo)
and 16h (Kabini/Mullins) microarchitectures.
This driver can also be built as a module. If so, the module
will be called k10temp.

33
drivers/hwmon/k10temp.c
View file

@ -33,6 +33,9 @@ static bool force;
module_param(force, bool, 0444);
MODULE_PARM_DESC(force, "force loading on processors with erratum 319");
/* Provide lock for writing to NB_SMU_IND_ADDR */
static DEFINE_MUTEX(nb_smu_ind_mutex);
/* CPUID function 0x80000001, ebx */
#define CPUID_PKGTYPE_MASK 0xf0000000
#define CPUID_PKGTYPE_F 0x00000000
@ -51,13 +54,38 @@ MODULE_PARM_DESC(force, "force loading on processors with erratum 319");
#define REG_NORTHBRIDGE_CAPABILITIES 0xe8
#define NB_CAP_HTC 0x00000400
/*
* For F15h M60h, functionality of REG_REPORTED_TEMPERATURE
* has been moved to D0F0xBC_xD820_0CA4 [Reported Temperature
* Control]
*/
#define F15H_M60H_REPORTED_TEMP_CTRL_OFFSET 0xd8200ca4
#define PCI_DEVICE_ID_AMD_15H_M60H_NB_F3 0x1573
static void amd_nb_smu_index_read(struct pci_dev *pdev, unsigned int devfn,
int offset, u32 *val)
{
mutex_lock(&nb_smu_ind_mutex);
pci_bus_write_config_dword(pdev->bus, devfn,
0xb8, offset);
pci_bus_read_config_dword(pdev->bus, devfn,
0xbc, val);
mutex_unlock(&nb_smu_ind_mutex);
}
static ssize_t show_temp(struct device *dev,
struct device_attribute *attr, char *buf)
{
u32 regval;
struct pci_dev *pdev = to_pci_dev(dev);
pci_read_config_dword(to_pci_dev(dev),
REG_REPORTED_TEMPERATURE, &regval);
if (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model == 0x60) {
amd_nb_smu_index_read(pdev, PCI_DEVFN(0, 0),
F15H_M60H_REPORTED_TEMP_CTRL_OFFSET,
&regval);
} else {
pci_read_config_dword(pdev, REG_REPORTED_TEMPERATURE, &regval);
}
return sprintf(buf, "%u\n", (regval >> 21) * 125);
}
@ -211,6 +239,7 @@ static const struct pci_device_id k10temp_id_table[] = {
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M10H_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M60H_NB_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_NB_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F3) },
{}