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23c69b9036
Commit id "b00647c46c9d7f6ee1ff6aaf335906101755e614", adds reporting current and voltage to k10temp.c The commit id "0a4e668b5d52eed8026f5d717196b02b55fb2dc6", removed reporting current and voltage from k10temp.c The curr and in(voltage) entries are not removed from "k10temp_info" structure. Removing those residue entries. while at it, update k10temp driver documentation Signed-off-by: suma hegde <suma.hegde@amd.com> Cc: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20210902174155.7365-2-nchatrad@amd.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
514 lines
14 KiB
C
514 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* k10temp.c - AMD Family 10h/11h/12h/14h/15h/16h/17h
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* processor hardware monitoring
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*
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* Copyright (c) 2009 Clemens Ladisch <clemens@ladisch.de>
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* Copyright (c) 2020 Guenter Roeck <linux@roeck-us.net>
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*
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* Implementation notes:
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* - CCD register address information as well as the calculation to
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* convert raw register values is from https://github.com/ocerman/zenpower.
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* The information is not confirmed from chip datasheets, but experiments
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* suggest that it provides reasonable temperature values.
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*/
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#include <linux/bitops.h>
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#include <linux/err.h>
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#include <linux/hwmon.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/pci_ids.h>
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#include <asm/amd_nb.h>
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#include <asm/processor.h>
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MODULE_DESCRIPTION("AMD Family 10h+ CPU core temperature monitor");
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MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
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MODULE_LICENSE("GPL");
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static bool force;
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module_param(force, bool, 0444);
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MODULE_PARM_DESC(force, "force loading on processors with erratum 319");
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/* Provide lock for writing to NB_SMU_IND_ADDR */
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static DEFINE_MUTEX(nb_smu_ind_mutex);
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#ifndef PCI_DEVICE_ID_AMD_15H_M70H_NB_F3
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#define PCI_DEVICE_ID_AMD_15H_M70H_NB_F3 0x15b3
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#endif
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/* CPUID function 0x80000001, ebx */
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#define CPUID_PKGTYPE_MASK GENMASK(31, 28)
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#define CPUID_PKGTYPE_F 0x00000000
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#define CPUID_PKGTYPE_AM2R2_AM3 0x10000000
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/* DRAM controller (PCI function 2) */
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#define REG_DCT0_CONFIG_HIGH 0x094
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#define DDR3_MODE BIT(8)
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/* miscellaneous (PCI function 3) */
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#define REG_HARDWARE_THERMAL_CONTROL 0x64
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#define HTC_ENABLE BIT(0)
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#define REG_REPORTED_TEMPERATURE 0xa4
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#define REG_NORTHBRIDGE_CAPABILITIES 0xe8
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#define NB_CAP_HTC BIT(10)
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/*
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* For F15h M60h and M70h, REG_HARDWARE_THERMAL_CONTROL
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* and REG_REPORTED_TEMPERATURE have been moved to
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* D0F0xBC_xD820_0C64 [Hardware Temperature Control]
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* D0F0xBC_xD820_0CA4 [Reported Temperature Control]
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*/
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#define F15H_M60H_HARDWARE_TEMP_CTRL_OFFSET 0xd8200c64
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#define F15H_M60H_REPORTED_TEMP_CTRL_OFFSET 0xd8200ca4
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/* Common for Zen CPU families (Family 17h and 18h and 19h) */
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#define ZEN_REPORTED_TEMP_CTRL_BASE 0x00059800
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#define ZEN_CCD_TEMP(offset, x) (ZEN_REPORTED_TEMP_CTRL_BASE + \
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(offset) + ((x) * 4))
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#define ZEN_CCD_TEMP_VALID BIT(11)
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#define ZEN_CCD_TEMP_MASK GENMASK(10, 0)
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#define ZEN_CUR_TEMP_SHIFT 21
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#define ZEN_CUR_TEMP_RANGE_SEL_MASK BIT(19)
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#define ZEN_SVI_BASE 0x0005A000
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/* F17h thermal registers through SMN */
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#define F17H_M01H_SVI_TEL_PLANE0 (ZEN_SVI_BASE + 0xc)
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#define F17H_M01H_SVI_TEL_PLANE1 (ZEN_SVI_BASE + 0x10)
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#define F17H_M31H_SVI_TEL_PLANE0 (ZEN_SVI_BASE + 0x14)
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#define F17H_M31H_SVI_TEL_PLANE1 (ZEN_SVI_BASE + 0x10)
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#define F17H_M01H_CFACTOR_ICORE 1000000 /* 1A / LSB */
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#define F17H_M01H_CFACTOR_ISOC 250000 /* 0.25A / LSB */
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#define F17H_M31H_CFACTOR_ICORE 1000000 /* 1A / LSB */
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#define F17H_M31H_CFACTOR_ISOC 310000 /* 0.31A / LSB */
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/* F19h thermal registers through SMN */
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#define F19H_M01_SVI_TEL_PLANE0 (ZEN_SVI_BASE + 0x14)
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#define F19H_M01_SVI_TEL_PLANE1 (ZEN_SVI_BASE + 0x10)
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#define F19H_M01H_CFACTOR_ICORE 1000000 /* 1A / LSB */
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#define F19H_M01H_CFACTOR_ISOC 310000 /* 0.31A / LSB */
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struct k10temp_data {
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struct pci_dev *pdev;
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void (*read_htcreg)(struct pci_dev *pdev, u32 *regval);
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void (*read_tempreg)(struct pci_dev *pdev, u32 *regval);
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int temp_offset;
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u32 temp_adjust_mask;
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u32 show_temp;
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bool is_zen;
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u32 ccd_offset;
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};
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#define TCTL_BIT 0
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#define TDIE_BIT 1
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#define TCCD_BIT(x) ((x) + 2)
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#define HAVE_TEMP(d, channel) ((d)->show_temp & BIT(channel))
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#define HAVE_TDIE(d) HAVE_TEMP(d, TDIE_BIT)
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struct tctl_offset {
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u8 model;
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char const *id;
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int offset;
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};
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static const struct tctl_offset tctl_offset_table[] = {
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{ 0x17, "AMD Ryzen 5 1600X", 20000 },
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{ 0x17, "AMD Ryzen 7 1700X", 20000 },
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{ 0x17, "AMD Ryzen 7 1800X", 20000 },
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{ 0x17, "AMD Ryzen 7 2700X", 10000 },
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{ 0x17, "AMD Ryzen Threadripper 19", 27000 }, /* 19{00,20,50}X */
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{ 0x17, "AMD Ryzen Threadripper 29", 27000 }, /* 29{20,50,70,90}[W]X */
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};
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static void read_htcreg_pci(struct pci_dev *pdev, u32 *regval)
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{
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pci_read_config_dword(pdev, REG_HARDWARE_THERMAL_CONTROL, regval);
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}
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static void read_tempreg_pci(struct pci_dev *pdev, u32 *regval)
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{
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pci_read_config_dword(pdev, REG_REPORTED_TEMPERATURE, regval);
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}
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static void amd_nb_index_read(struct pci_dev *pdev, unsigned int devfn,
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unsigned int base, int offset, u32 *val)
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{
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mutex_lock(&nb_smu_ind_mutex);
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pci_bus_write_config_dword(pdev->bus, devfn,
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base, offset);
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pci_bus_read_config_dword(pdev->bus, devfn,
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base + 4, val);
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mutex_unlock(&nb_smu_ind_mutex);
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}
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static void read_htcreg_nb_f15(struct pci_dev *pdev, u32 *regval)
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{
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amd_nb_index_read(pdev, PCI_DEVFN(0, 0), 0xb8,
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F15H_M60H_HARDWARE_TEMP_CTRL_OFFSET, regval);
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}
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static void read_tempreg_nb_f15(struct pci_dev *pdev, u32 *regval)
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{
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amd_nb_index_read(pdev, PCI_DEVFN(0, 0), 0xb8,
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F15H_M60H_REPORTED_TEMP_CTRL_OFFSET, regval);
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}
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static void read_tempreg_nb_zen(struct pci_dev *pdev, u32 *regval)
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{
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amd_smn_read(amd_pci_dev_to_node_id(pdev),
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ZEN_REPORTED_TEMP_CTRL_BASE, regval);
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}
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static long get_raw_temp(struct k10temp_data *data)
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{
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u32 regval;
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long temp;
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data->read_tempreg(data->pdev, ®val);
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temp = (regval >> ZEN_CUR_TEMP_SHIFT) * 125;
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if (regval & data->temp_adjust_mask)
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temp -= 49000;
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return temp;
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}
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static const char *k10temp_temp_label[] = {
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"Tctl",
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"Tdie",
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"Tccd1",
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"Tccd2",
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"Tccd3",
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"Tccd4",
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"Tccd5",
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"Tccd6",
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"Tccd7",
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"Tccd8",
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};
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static int k10temp_read_labels(struct device *dev,
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enum hwmon_sensor_types type,
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u32 attr, int channel, const char **str)
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{
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switch (type) {
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case hwmon_temp:
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*str = k10temp_temp_label[channel];
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static int k10temp_read_temp(struct device *dev, u32 attr, int channel,
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long *val)
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{
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struct k10temp_data *data = dev_get_drvdata(dev);
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u32 regval;
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switch (attr) {
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case hwmon_temp_input:
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switch (channel) {
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case 0: /* Tctl */
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*val = get_raw_temp(data);
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if (*val < 0)
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*val = 0;
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break;
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case 1: /* Tdie */
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*val = get_raw_temp(data) - data->temp_offset;
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if (*val < 0)
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*val = 0;
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break;
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case 2 ... 9: /* Tccd{1-8} */
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amd_smn_read(amd_pci_dev_to_node_id(data->pdev),
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ZEN_CCD_TEMP(data->ccd_offset, channel - 2),
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®val);
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*val = (regval & ZEN_CCD_TEMP_MASK) * 125 - 49000;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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case hwmon_temp_max:
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*val = 70 * 1000;
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break;
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case hwmon_temp_crit:
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data->read_htcreg(data->pdev, ®val);
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*val = ((regval >> 16) & 0x7f) * 500 + 52000;
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break;
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case hwmon_temp_crit_hyst:
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data->read_htcreg(data->pdev, ®val);
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*val = (((regval >> 16) & 0x7f)
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- ((regval >> 24) & 0xf)) * 500 + 52000;
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static int k10temp_read(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, long *val)
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{
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switch (type) {
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case hwmon_temp:
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return k10temp_read_temp(dev, attr, channel, val);
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default:
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return -EOPNOTSUPP;
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}
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}
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static umode_t k10temp_is_visible(const void *_data,
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enum hwmon_sensor_types type,
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u32 attr, int channel)
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{
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const struct k10temp_data *data = _data;
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struct pci_dev *pdev = data->pdev;
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u32 reg;
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switch (type) {
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case hwmon_temp:
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switch (attr) {
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case hwmon_temp_input:
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if (!HAVE_TEMP(data, channel))
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return 0;
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break;
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case hwmon_temp_max:
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if (channel || data->is_zen)
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return 0;
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break;
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case hwmon_temp_crit:
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case hwmon_temp_crit_hyst:
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if (channel || !data->read_htcreg)
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return 0;
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pci_read_config_dword(pdev,
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REG_NORTHBRIDGE_CAPABILITIES,
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®);
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if (!(reg & NB_CAP_HTC))
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return 0;
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data->read_htcreg(data->pdev, ®);
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if (!(reg & HTC_ENABLE))
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return 0;
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break;
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case hwmon_temp_label:
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/* Show temperature labels only on Zen CPUs */
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if (!data->is_zen || !HAVE_TEMP(data, channel))
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return 0;
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break;
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default:
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return 0;
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}
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break;
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default:
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return 0;
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}
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return 0444;
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}
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static bool has_erratum_319(struct pci_dev *pdev)
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{
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u32 pkg_type, reg_dram_cfg;
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if (boot_cpu_data.x86 != 0x10)
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return false;
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/*
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* Erratum 319: The thermal sensor of Socket F/AM2+ processors
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* may be unreliable.
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*/
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pkg_type = cpuid_ebx(0x80000001) & CPUID_PKGTYPE_MASK;
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if (pkg_type == CPUID_PKGTYPE_F)
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return true;
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if (pkg_type != CPUID_PKGTYPE_AM2R2_AM3)
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return false;
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/* DDR3 memory implies socket AM3, which is good */
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pci_bus_read_config_dword(pdev->bus,
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PCI_DEVFN(PCI_SLOT(pdev->devfn), 2),
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REG_DCT0_CONFIG_HIGH, ®_dram_cfg);
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if (reg_dram_cfg & DDR3_MODE)
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return false;
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/*
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* Unfortunately it is possible to run a socket AM3 CPU with DDR2
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* memory. We blacklist all the cores which do exist in socket AM2+
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* format. It still isn't perfect, as RB-C2 cores exist in both AM2+
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* and AM3 formats, but that's the best we can do.
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*/
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return boot_cpu_data.x86_model < 4 ||
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(boot_cpu_data.x86_model == 4 && boot_cpu_data.x86_stepping <= 2);
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}
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static const struct hwmon_channel_info *k10temp_info[] = {
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HWMON_CHANNEL_INFO(temp,
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HWMON_T_INPUT | HWMON_T_MAX |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL),
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NULL
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};
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static const struct hwmon_ops k10temp_hwmon_ops = {
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.is_visible = k10temp_is_visible,
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.read = k10temp_read,
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.read_string = k10temp_read_labels,
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};
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static const struct hwmon_chip_info k10temp_chip_info = {
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.ops = &k10temp_hwmon_ops,
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.info = k10temp_info,
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};
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static void k10temp_get_ccd_support(struct pci_dev *pdev,
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struct k10temp_data *data, int limit)
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{
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u32 regval;
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int i;
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for (i = 0; i < limit; i++) {
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amd_smn_read(amd_pci_dev_to_node_id(pdev),
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ZEN_CCD_TEMP(data->ccd_offset, i), ®val);
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if (regval & ZEN_CCD_TEMP_VALID)
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data->show_temp |= BIT(TCCD_BIT(i));
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}
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}
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static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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int unreliable = has_erratum_319(pdev);
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struct device *dev = &pdev->dev;
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struct k10temp_data *data;
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struct device *hwmon_dev;
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int i;
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if (unreliable) {
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if (!force) {
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dev_err(dev,
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"unreliable CPU thermal sensor; monitoring disabled\n");
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return -ENODEV;
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}
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dev_warn(dev,
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"unreliable CPU thermal sensor; check erratum 319\n");
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}
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data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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data->pdev = pdev;
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data->show_temp |= BIT(TCTL_BIT); /* Always show Tctl */
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if (boot_cpu_data.x86 == 0x15 &&
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((boot_cpu_data.x86_model & 0xf0) == 0x60 ||
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(boot_cpu_data.x86_model & 0xf0) == 0x70)) {
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data->read_htcreg = read_htcreg_nb_f15;
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data->read_tempreg = read_tempreg_nb_f15;
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} else if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18) {
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data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK;
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data->read_tempreg = read_tempreg_nb_zen;
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data->is_zen = true;
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switch (boot_cpu_data.x86_model) {
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case 0x1: /* Zen */
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case 0x8: /* Zen+ */
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case 0x11: /* Zen APU */
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case 0x18: /* Zen+ APU */
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data->ccd_offset = 0x154;
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k10temp_get_ccd_support(pdev, data, 4);
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break;
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case 0x31: /* Zen2 Threadripper */
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case 0x60: /* Renoir */
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case 0x68: /* Lucienne */
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case 0x71: /* Zen2 */
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data->ccd_offset = 0x154;
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k10temp_get_ccd_support(pdev, data, 8);
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break;
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}
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} else if (boot_cpu_data.x86 == 0x19) {
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data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK;
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data->read_tempreg = read_tempreg_nb_zen;
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data->is_zen = true;
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switch (boot_cpu_data.x86_model) {
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case 0x0 ... 0x1: /* Zen3 SP3/TR */
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case 0x21: /* Zen3 Ryzen Desktop */
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case 0x50 ... 0x5f: /* Green Sardine */
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data->ccd_offset = 0x154;
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k10temp_get_ccd_support(pdev, data, 8);
|
|
break;
|
|
case 0x40 ... 0x4f: /* Yellow Carp */
|
|
data->ccd_offset = 0x300;
|
|
k10temp_get_ccd_support(pdev, data, 8);
|
|
break;
|
|
}
|
|
} else {
|
|
data->read_htcreg = read_htcreg_pci;
|
|
data->read_tempreg = read_tempreg_pci;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(tctl_offset_table); i++) {
|
|
const struct tctl_offset *entry = &tctl_offset_table[i];
|
|
|
|
if (boot_cpu_data.x86 == entry->model &&
|
|
strstr(boot_cpu_data.x86_model_id, entry->id)) {
|
|
data->show_temp |= BIT(TDIE_BIT); /* show Tdie */
|
|
data->temp_offset = entry->offset;
|
|
break;
|
|
}
|
|
}
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_info(dev, "k10temp", data,
|
|
&k10temp_chip_info,
|
|
NULL);
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
static const 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) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CNB17H_F3) },
|
|
{ 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_15H_M70H_NB_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_NB_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_DF_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M10H_DF_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M30H_DF_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M60H_DF_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_DF_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_M40H_DF_F3) },
|
|
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_M50H_DF_F3) },
|
|
{ PCI_VDEVICE(HYGON, PCI_DEVICE_ID_AMD_17H_DF_F3) },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, k10temp_id_table);
|
|
|
|
static struct pci_driver k10temp_driver = {
|
|
.name = "k10temp",
|
|
.id_table = k10temp_id_table,
|
|
.probe = k10temp_probe,
|
|
};
|
|
|
|
module_pci_driver(k10temp_driver);
|