linux-imx

/*

 * fam15h_power.c - AMD Family 15h processor power monitoring

 *

 * Copyright (c) 2011-2016 Advanced Micro Devices, Inc.

 * Author: Andreas Herrmann <herrmann.der.user@googlemail.com>

 *

 *

 * 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 <linux/bitops.h>

#include <linux/cpu.h>

#include <linux/cpumask.h>

#include <linux/time.h>

#include <linux/sched.h>

#include <asm/processor.h>

#include <asm/msr.h>

​

MODULE_DESCRIPTION("AMD Family 15h CPU processor power monitor");

MODULE_AUTHOR("Andreas Herrmann <herrmann.der.user@googlemail.com>");

MODULE_LICENSE("GPL");

​

/* D18F3 */

#define REG_NORTHBRIDGE_CAP     0xe8

​

/* D18F4 */

#define REG_PROCESSOR_TDP       0x1b8

​

/* D18F5 */

#define REG_TDP_RUNNING_AVERAGE     0xe0

#define REG_TDP_LIMIT3          0xe8

​

#define FAM15H_MIN_NUM_ATTRS        2

#define FAM15H_NUM_GROUPS       2

#define MAX_CUS             8

​

/* set maximum interval as 1 second */

#define MAX_INTERVAL            1000

​

#define MSR_F15H_CU_PWR_ACCUMULATOR 0xc001007a

#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b

#define MSR_F15H_PTSC           0xc0010280

​

#define PCI_DEVICE_ID_AMD_15H_M70H_NB_F4 0x15b4

​

struct fam15h_power_data {

    struct pci_dev *pdev;