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Commit f89ce270 authored by Aravind Gopalakrishnan's avatar Aravind Gopalakrishnan Committed by Guenter Roeck
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hwmon: (k10temp) Add support for F15h M60h 



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: default avatarAravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Acked-by: default avatarBorislav Petkov <bp@suse.de>
Acked-by: default avatarClemens Ladisch <clemens@ladisch.de>
[Guenter Roeck: Declare new mutex and function static]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 4222eb5f

Documentation/hwmon/k10temp

+1 −1
Original line number Diff line number Diff line
@@ -11,7 +11,7 @@ Supported chips: 
  Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)

* AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series)

* AMD Family 14h processors: "Brazos" (C/E/G/Z-Series)

* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri"

* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri", "Carrizo"

* AMD Family 16h processors: "Kabini", "Mullins"



  Prefix: 'k10temp'

drivers/hwmon/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -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.

drivers/hwmon/k10temp.c

+32 −3
Original line number Diff line number Diff line
@@ -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;



	pci_read_config_dword(to_pci_dev(dev),

			      REG_REPORTED_TEMPERATURE, &regval);

	struct pci_dev *pdev = to_pci_dev(dev);



	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) },

	{}