// SPDX-License-Identifier: GPL-2.0-or-later /* * k10temp.c - AMD Family 10h/11h/12h/14h/15h/16h/17h * processor hardware monitoring * * Copyright (c) 2009 Clemens Ladisch <[email protected]> * Copyright (c) 2020 Guenter Roeck <[email protected]> * * Implementation notes: * - CCD register address information as well as the calculation to * convert raw register values is from https://github.com/ocerman/zenpower. * The information is not confirmed from chip datasheets, but experiments * suggest that it provides reasonable temperature values. */ #include <linux/bitops.h> #include <linux/err.h> #include <linux/hwmon.h> #include <linux/init.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/pci_ids.h> #include <asm/amd_nb.h> #include <asm/processor.h> MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; static bool force; module_param(force, bool, 0444); MODULE_PARM_DESC(…) …; /* Provide lock for writing to NB_SMU_IND_ADDR */ static DEFINE_MUTEX(nb_smu_ind_mutex); #ifndef PCI_DEVICE_ID_AMD_15H_M70H_NB_F3 #define PCI_DEVICE_ID_AMD_15H_M70H_NB_F3 … #endif /* CPUID function 0x80000001, ebx */ #define CPUID_PKGTYPE_MASK … #define CPUID_PKGTYPE_F … #define CPUID_PKGTYPE_AM2R2_AM3 … /* DRAM controller (PCI function 2) */ #define REG_DCT0_CONFIG_HIGH … #define DDR3_MODE … /* miscellaneous (PCI function 3) */ #define REG_HARDWARE_THERMAL_CONTROL … #define HTC_ENABLE … #define REG_REPORTED_TEMPERATURE … #define REG_NORTHBRIDGE_CAPABILITIES … #define NB_CAP_HTC … /* * For F15h M60h and M70h, REG_HARDWARE_THERMAL_CONTROL * and REG_REPORTED_TEMPERATURE have been moved to * D0F0xBC_xD820_0C64 [Hardware Temperature Control] * D0F0xBC_xD820_0CA4 [Reported Temperature Control] */ #define F15H_M60H_HARDWARE_TEMP_CTRL_OFFSET … #define F15H_M60H_REPORTED_TEMP_CTRL_OFFSET … /* Common for Zen CPU families (Family 17h and 18h and 19h and 1Ah) */ #define ZEN_REPORTED_TEMP_CTRL_BASE … #define ZEN_CCD_TEMP(offset, x) … #define ZEN_CCD_TEMP_VALID … #define ZEN_CCD_TEMP_MASK … #define ZEN_CUR_TEMP_SHIFT … #define ZEN_CUR_TEMP_RANGE_SEL_MASK … #define ZEN_CUR_TEMP_TJ_SEL_MASK … /* * AMD's Industrial processor 3255 supports temperature from -40 deg to 105 deg Celsius. * Use the model name to identify 3255 CPUs and set a flag to display negative temperature. * Do not round off to zero for negative Tctl or Tdie values if the flag is set */ #define AMD_I3255_STR … struct k10temp_data { … }; #define TCTL_BIT … #define TDIE_BIT … #define TCCD_BIT(x) … #define HAVE_TEMP(d, channel) … struct tctl_offset { … }; static const struct tctl_offset tctl_offset_table[] = …; static void read_htcreg_pci(struct pci_dev *pdev, u32 *regval) { … } static void read_tempreg_pci(struct pci_dev *pdev, u32 *regval) { … } static void amd_nb_index_read(struct pci_dev *pdev, unsigned int devfn, unsigned int base, int offset, u32 *val) { … } static void read_htcreg_nb_f15(struct pci_dev *pdev, u32 *regval) { … } static void read_tempreg_nb_f15(struct pci_dev *pdev, u32 *regval) { … } static void read_tempreg_nb_zen(struct pci_dev *pdev, u32 *regval) { … } static int read_ccd_temp_reg(struct k10temp_data *data, int ccd, u32 *regval) { … } static long get_raw_temp(struct k10temp_data *data) { … } static const char *k10temp_temp_label[] = …; static int k10temp_read_labels(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, const char **str) { … } static int k10temp_read_temp(struct device *dev, u32 attr, int channel, long *val) { … } static int k10temp_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static umode_t k10temp_is_visible(const void *drvdata, enum hwmon_sensor_types type, u32 attr, int channel) { … } static bool has_erratum_319(struct pci_dev *pdev) { … } static const struct hwmon_channel_info * const k10temp_info[] = …; static const struct hwmon_ops k10temp_hwmon_ops = …; static const struct hwmon_chip_info k10temp_chip_info = …; static void k10temp_get_ccd_support(struct k10temp_data *data, int limit) { … } static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static const struct pci_device_id k10temp_id_table[] = …; MODULE_DEVICE_TABLE(pci, k10temp_id_table); static struct pci_driver k10temp_driver = …; module_pci_driver(…) …;
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