diff options
author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-01-30 14:13:26 +0100 |
---|---|---|
committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-01-30 14:13:26 +0100 |
commit | f364beb5b6734cefbfa01a79aacdf6c086082e6a (patch) | |
tree | c02221b73a3dcefb68c5bc1303094ba6f4e5108b /drivers/thermal | |
parent | 79b2027097dd3046ff95a2701af441405f1ff298 (diff) | |
parent | f4118dbe61bb30038ca7f3ecaf333cabc9c54141 (diff) |
Merge branch 'thermal-intel'
Merge changes affecting thermal control on Intel platforms for 6.3-rc1:
- Consolidate code accessing the Intel TCC (Thermal Control Circuitry)
MSRs by introducing library functions for that and making the
TCC-related code in thermal drivers use them (Zhang Rui).
- Enhance the x86_pkg_temp_thermal driver to support dynamic tjmax
changes (Zhang Rui).
- Address an "unsigned expression compared with zero" warning in the
intel_soc_dts_iosf thermal driver (Yang Li).
- Update comments regarding two functions in the Intel Menlow thermal
driver (Deming Wang).
- Use sysfs_emit_at() instead of scnprintf() in the int340x thermal
driver (ye xingchen).
- Make the intel_pch thermal driver support the Wellsburg PCH (Tim
Zimmermann).
- Add trip point initialization helper functions for ACPI-defined trip
points and modify two thermal drivers to use them (Rafael Wysocki,
Daniel Lezcano).
- Modify the intel_pch and processor_thermal_device_pci thermal drivers
use generic trip point tables instead of thermal zone trip point
callbacks (Daniel Lezcano).
- Add production mode attribute sysfs attribute to the int340x thermal
driver (Srinivas Pandruvada).
- Rework dynamic trip point updates handling and locking in the int340x
thermal driver (Rafael Wysocki).
- Make the int340x thermal driver use a generic trip points table
instead of thermal zone trip point callbacks (Rafael Wysocki, Daniel
Lezcano).
* thermal-intel:
thermal: intel: int340x: Use generic trip points table
thermal: intel: int340x: Use zone lock for synchronization
thermal: intel: int340x: Rework updating trip points
thermal: ACPI: Initialize trips if temperature is out of range
thermal: intel: processor_thermal_device_pci: Use generic trip point
thermal: intel: int340x: Add production mode attribute
thermal: intel: intel_pch: Use generic trip points
thermal: ACPI: Add ACPI trip point routines
thermal: intel: intel_pch: Add support for Wellsburg PCH
thermal: int340x_thermal: Use sysfs_emit_at() instead of scnprintf()
thermal: intel: menlow: Update function descriptions
thermal: intel: Fix unsigned comparison with less than zero
thermal/x86_pkg_temp_thermal: Add support for handling dynamic tjmax
thermal/x86_pkg_temp_thermal: Use Intel TCC library
thermal/intel/intel_tcc_cooling: Use Intel TCC library
thermal/intel/intel_soc_dts_iosf: Use Intel TCC library
thermal/int340x/processor_thermal: Use Intel TCC library
thermal/intel: Introduce Intel TCC library
Diffstat (limited to 'drivers/thermal')
18 files changed, 568 insertions, 477 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index e052dae614eb..eaeb2b2ee6e9 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -76,6 +76,10 @@ config THERMAL_OF Say 'Y' here if you need to build thermal infrastructure based on device tree. +config THERMAL_ACPI + depends on ACPI + bool + config THERMAL_WRITABLE_TRIPS bool "Enable writable trip points" help diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 2506c6c8ca83..60f0dfa9aae2 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -13,6 +13,7 @@ thermal_sys-$(CONFIG_THERMAL_NETLINK) += thermal_netlink.o # interface to/from other layers providing sensors thermal_sys-$(CONFIG_THERMAL_HWMON) += thermal_hwmon.o thermal_sys-$(CONFIG_THERMAL_OF) += thermal_of.o +thermal_sys-$(CONFIG_THERMAL_ACPI) += thermal_acpi.o # governors thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE) += gov_fair_share.o diff --git a/drivers/thermal/intel/Kconfig b/drivers/thermal/intel/Kconfig index f0c845679250..e50fd260484a 100644 --- a/drivers/thermal/intel/Kconfig +++ b/drivers/thermal/intel/Kconfig @@ -12,11 +12,16 @@ config X86_THERMAL_VECTOR def_bool y depends on X86 && CPU_SUP_INTEL && X86_LOCAL_APIC +config INTEL_TCC + bool + depends on X86 + config X86_PKG_TEMP_THERMAL tristate "X86 package temperature thermal driver" depends on X86_THERMAL_VECTOR select THERMAL_GOV_USER_SPACE select THERMAL_WRITABLE_TRIPS + select INTEL_TCC default m help Enable this to register CPU digital sensor for package temperature as @@ -28,6 +33,7 @@ config INTEL_SOC_DTS_IOSF_CORE tristate depends on X86 && PCI select IOSF_MBI + select INTEL_TCC help This is becoming a common feature for Intel SoCs to expose the additional digital temperature sensors (DTSs) using side band interface (IOSF). This @@ -75,6 +81,7 @@ config INTEL_BXT_PMIC_THERMAL config INTEL_PCH_THERMAL tristate "Intel PCH Thermal Reporting Driver" depends on X86 && PCI + select THERMAL_ACPI if ACPI help Enable this to support thermal reporting on certain intel PCHs. Thermal reporting device will provide temperature reading, @@ -83,6 +90,7 @@ config INTEL_PCH_THERMAL config INTEL_TCC_COOLING tristate "Intel TCC offset cooling Driver" depends on X86 + select INTEL_TCC help Enable this to support system cooling by adjusting the effective TCC activation temperature via the TCC Offset register, which is widely diff --git a/drivers/thermal/intel/Makefile b/drivers/thermal/intel/Makefile index 9a8d8054f316..5d8833c82ab6 100644 --- a/drivers/thermal/intel/Makefile +++ b/drivers/thermal/intel/Makefile @@ -2,6 +2,7 @@ # # Makefile for various Intel thermal drivers. +obj-$(CONFIG_INTEL_TCC) += intel_tcc.o obj-$(CONFIG_INTEL_POWERCLAMP) += intel_powerclamp.o obj-$(CONFIG_X86_PKG_TEMP_THERMAL) += x86_pkg_temp_thermal.o obj-$(CONFIG_INTEL_SOC_DTS_IOSF_CORE) += intel_soc_dts_iosf.o diff --git a/drivers/thermal/intel/int340x_thermal/Kconfig b/drivers/thermal/intel/int340x_thermal/Kconfig index 5d046de96a5d..300ea53e9b33 100644 --- a/drivers/thermal/intel/int340x_thermal/Kconfig +++ b/drivers/thermal/intel/int340x_thermal/Kconfig @@ -9,7 +9,9 @@ config INT340X_THERMAL select THERMAL_GOV_USER_SPACE select ACPI_THERMAL_REL select ACPI_FAN + select THERMAL_ACPI select INTEL_SOC_DTS_IOSF_CORE + select INTEL_TCC select PROC_THERMAL_MMIO_RAPL if POWERCAP help Newer laptops and tablets that use ACPI may have thermal sensors and diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c index db8a6f63657d..d0295123cc3e 100644 --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c @@ -60,6 +60,7 @@ struct int3400_thermal_priv { int odvp_count; int *odvp; u32 os_uuid_mask; + int production_mode; struct odvp_attr *odvp_attrs; }; @@ -130,10 +131,7 @@ static ssize_t available_uuids_show(struct device *dev, for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) { if (priv->uuid_bitmap & (1 << i)) - length += scnprintf(&buf[length], - PAGE_SIZE - length, - "%s\n", - int3400_thermal_uuids[i]); + length += sysfs_emit_at(buf, length, int3400_thermal_uuids[i]); } return length; @@ -151,10 +149,7 @@ static ssize_t current_uuid_show(struct device *dev, for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) { if (priv->os_uuid_mask & BIT(i)) - length += scnprintf(&buf[length], - PAGE_SIZE - length, - "%s\n", - int3400_thermal_uuids[i]); + length += sysfs_emit_at(buf, length, int3400_thermal_uuids[i]); } if (length) @@ -315,6 +310,44 @@ end: return result; } +static ssize_t production_mode_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct int3400_thermal_priv *priv = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", priv->production_mode); +} + +static DEVICE_ATTR_RO(production_mode); + +static int production_mode_init(struct int3400_thermal_priv *priv) +{ + unsigned long long mode; + acpi_status status; + int ret; + + priv->production_mode = -1; + + status = acpi_evaluate_integer(priv->adev->handle, "DCFG", NULL, &mode); + /* If the method is not present, this is not an error */ + if (ACPI_FAILURE(status)) + return 0; + + ret = sysfs_create_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr); + if (ret) + return ret; + + priv->production_mode = mode; + + return 0; +} + +static void production_mode_exit(struct int3400_thermal_priv *priv) +{ + if (priv->production_mode >= 0) + sysfs_remove_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr); +} + static ssize_t odvp_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -610,8 +643,15 @@ static int int3400_thermal_probe(struct platform_device *pdev) if (result) goto free_sysfs; + result = production_mode_init(priv); + if (result) + goto free_notify; + return 0; +free_notify: + acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY, + int3400_notify); free_sysfs: cleanup_odvp(priv); if (!ZERO_OR_NULL_PTR(priv->data_vault)) { @@ -638,6 +678,8 @@ static int int3400_thermal_remove(struct platform_device *pdev) { struct int3400_thermal_priv *priv = platform_get_drvdata(pdev); + production_mode_exit(priv); + acpi_remove_notify_handler( priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify); diff --git a/drivers/thermal/intel/int340x_thermal/int3403_thermal.c b/drivers/thermal/intel/int340x_thermal/int3403_thermal.c index 71d084c4c456..e418d270bc76 100644 --- a/drivers/thermal/intel/int340x_thermal/int3403_thermal.c +++ b/drivers/thermal/intel/int340x_thermal/int3403_thermal.c @@ -69,7 +69,7 @@ static void int3403_notify(acpi_handle handle, THERMAL_TRIP_VIOLATED); break; case INT3403_PERF_TRIP_POINT_CHANGED: - int340x_thermal_read_trips(obj->int340x_zone); + int340x_thermal_update_trips(obj->int340x_zone); int340x_thermal_zone_device_update(obj->int340x_zone, THERMAL_TRIP_CHANGED); break; diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c index 40c1e8a8bc1b..09b1b51eb6a5 100644 --- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c +++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c @@ -37,73 +37,6 @@ static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone, return 0; } -static int int340x_thermal_get_trip_temp(struct thermal_zone_device *zone, - int trip, int *temp) -{ - struct int34x_thermal_zone *d = zone->devdata; - int i, ret = 0; - - mutex_lock(&d->trip_mutex); - - if (trip < d->aux_trip_nr) - *temp = d->aux_trips[trip]; - else if (trip == d->crt_trip_id) - *temp = d->crt_temp; - else if (trip == d->psv_trip_id) - *temp = d->psv_temp; - else if (trip == d->hot_trip_id) - *temp = d->hot_temp; - else { - for (i = 0; i < INT340X_THERMAL_MAX_ACT_TRIP_COUNT; i++) { - if (d->act_trips[i].valid && - d->act_trips[i].id == trip) { - *temp = d->act_trips[i].temp; - break; - } - } - if (i == INT340X_THERMAL_MAX_ACT_TRIP_COUNT) - ret = -EINVAL; - } - - mutex_unlock(&d->trip_mutex); - - return ret; -} - -static int int340x_thermal_get_trip_type(struct thermal_zone_device *zone, - int trip, - enum thermal_trip_type *type) -{ - struct int34x_thermal_zone *d = zone->devdata; - int i, ret = 0; - - mutex_lock(&d->trip_mutex); - - if (trip < d->aux_trip_nr) - *type = THERMAL_TRIP_PASSIVE; - else if (trip == d->crt_trip_id) - *type = THERMAL_TRIP_CRITICAL; - else if (trip == d->hot_trip_id) - *type = THERMAL_TRIP_HOT; - else if (trip == d->psv_trip_id) - *type = THERMAL_TRIP_PASSIVE; - else { - for (i = 0; i < INT340X_THERMAL_MAX_ACT_TRIP_COUNT; i++) { - if (d->act_trips[i].valid && - d->act_trips[i].id == trip) { - *type = THERMAL_TRIP_ACTIVE; - break; - } - } - if (i == INT340X_THERMAL_MAX_ACT_TRIP_COUNT) - ret = -EINVAL; - } - - mutex_unlock(&d->trip_mutex); - - return ret; -} - static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone, int trip, int temp) { @@ -117,25 +50,6 @@ static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone, if (ACPI_FAILURE(status)) return -EIO; - d->aux_trips[trip] = temp; - - return 0; -} - - -static int int340x_thermal_get_trip_hyst(struct thermal_zone_device *zone, - int trip, int *temp) -{ - struct int34x_thermal_zone *d = zone->devdata; - acpi_status status; - unsigned long long hyst; - - status = acpi_evaluate_integer(d->adev->handle, "GTSH", NULL, &hyst); - if (ACPI_FAILURE(status)) - *temp = 0; - else - *temp = hyst * 100; - return 0; } @@ -146,67 +60,39 @@ static void int340x_thermal_critical(struct thermal_zone_device *zone) static struct thermal_zone_device_ops int340x_thermal_zone_ops = { .get_temp = int340x_thermal_get_zone_temp, - .get_trip_temp = int340x_thermal_get_trip_temp, - .get_trip_type = int340x_thermal_get_trip_type, .set_trip_temp = int340x_thermal_set_trip_temp, - .get_trip_hyst = int340x_thermal_get_trip_hyst, .critical = int340x_thermal_critical, }; -static int int340x_thermal_get_trip_config(acpi_handle handle, char *name, - int *temp) +static int int340x_thermal_read_trips(struct acpi_device *zone_adev, + struct thermal_trip *zone_trips, + int trip_cnt) { - unsigned long long r; - acpi_status status; + int i, ret; - status = acpi_evaluate_integer(handle, name, NULL, &r); - if (ACPI_FAILURE(status)) - return -EIO; + ret = thermal_acpi_trip_critical(zone_adev, &zone_trips[trip_cnt]); + if (!ret) + trip_cnt++; - *temp = deci_kelvin_to_millicelsius(r); - - return 0; -} - -int int340x_thermal_read_trips(struct int34x_thermal_zone *int34x_zone) -{ - int trip_cnt = int34x_zone->aux_trip_nr; - int i; + ret = thermal_acpi_trip_hot(zone_adev, &zone_trips[trip_cnt]); + if (!ret) + trip_cnt++; - mutex_lock(&int34x_zone->trip_mutex); - - int34x_zone->crt_trip_id = -1; - if (!int340x_thermal_get_trip_config(int34x_zone->adev->handle, "_CRT", - &int34x_zone->crt_temp)) - int34x_zone->crt_trip_id = trip_cnt++; - - int34x_zone->hot_trip_id = -1; - if (!int340x_thermal_get_trip_config(int34x_zone->adev->handle, "_HOT", - &int34x_zone->hot_temp)) - int34x_zone->hot_trip_id = trip_cnt++; - - int34x_zone->psv_trip_id = -1; - if (!int340x_thermal_get_trip_config(int34x_zone->adev->handle, "_PSV", - &int34x_zone->psv_temp)) - int34x_zone->psv_trip_id = trip_cnt++; + ret = thermal_acpi_trip_passive(zone_adev, &zone_trips[trip_cnt]); + if (!ret) + trip_cnt++; for (i = 0; i < INT340X_THERMAL_MAX_ACT_TRIP_COUNT; i++) { - char name[5] = { '_', 'A', 'C', '0' + i, '\0' }; - if (int340x_thermal_get_trip_config(int34x_zone->adev->handle, - name, - &int34x_zone->act_trips[i].temp)) + ret = thermal_acpi_trip_active(zone_adev, i, &zone_trips[trip_cnt]); + if (ret) break; - int34x_zone->act_trips[i].id = trip_cnt++; - int34x_zone->act_trips[i].valid = true; + trip_cnt++; } - mutex_unlock(&int34x_zone->trip_mutex); - return trip_cnt; } -EXPORT_SYMBOL_GPL(int340x_thermal_read_trips); static struct thermal_zone_params int340x_thermal_params = { .governor_name = "user_space", @@ -217,18 +103,18 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev, int (*get_temp) (struct thermal_zone_device *, int *)) { struct int34x_thermal_zone *int34x_thermal_zone; - acpi_status status; - unsigned long long trip_cnt; + struct thermal_trip *zone_trips; + unsigned long long trip_cnt = 0; + unsigned long long hyst; int trip_mask = 0; - int ret; + acpi_status status; + int i, ret; int34x_thermal_zone = kzalloc(sizeof(*int34x_thermal_zone), GFP_KERNEL); if (!int34x_thermal_zone) return ERR_PTR(-ENOMEM); - mutex_init(&int34x_thermal_zone->trip_mutex); - int34x_thermal_zone->adev = adev; int34x_thermal_zone->ops = kmemdup(&int340x_thermal_zone_ops, @@ -242,33 +128,42 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev, int34x_thermal_zone->ops->get_temp = get_temp; status = acpi_evaluate_integer(adev->handle, "PATC", NULL, &trip_cnt); - if (ACPI_FAILURE(status)) - trip_cnt = 0; - else { - int i; - - int34x_thermal_zone->aux_trips = - kcalloc(trip_cnt, - sizeof(*int34x_thermal_zone->aux_trips), - GFP_KERNEL); - if (!int34x_thermal_zone->aux_trips) { - ret = -ENOMEM; - goto err_trip_alloc; - } - trip_mask = BIT(trip_cnt) - 1; + if (!ACPI_FAILURE(status)) { int34x_thermal_zone->aux_trip_nr = trip_cnt; - for (i = 0; i < trip_cnt; ++i) - int34x_thermal_zone->aux_trips[i] = THERMAL_TEMP_INVALID; + trip_mask = BIT(trip_cnt) - 1; + } + + zone_trips = kzalloc(sizeof(*zone_trips) * (trip_cnt + INT340X_THERMAL_MAX_TRIP_COUNT), + GFP_KERNEL); + if (!zone_trips) { + ret = -ENOMEM; + goto err_trips_alloc; } - trip_cnt = int340x_thermal_read_trips(int34x_thermal_zone); + for (i = 0; i < trip_cnt; i++) { + zone_trips[i].type = THERMAL_TRIP_PASSIVE; + zone_trips[i].temperature = THERMAL_TEMP_INVALID; + } + + trip_cnt = int340x_thermal_read_trips(adev, zone_trips, trip_cnt); + + status = acpi_evaluate_integer(adev->handle, "GTSH", NULL, &hyst); + if (ACPI_SUCCESS(status)) + hyst *= 100; + else + hyst = 0; + + for (i = 0; i < trip_cnt; ++i) + zone_trips[i].hysteresis = hyst; + + int34x_thermal_zone->trips = zone_trips; int34x_thermal_zone->lpat_table = acpi_lpat_get_conversion_table( adev->handle); - int34x_thermal_zone->zone = thermal_zone_device_register( + int34x_thermal_zone->zone = thermal_zone_device_register_with_trips( acpi_device_bid(adev), - trip_cnt, + zone_trips, trip_cnt, trip_mask, int34x_thermal_zone, int34x_thermal_zone->ops, &int340x_thermal_params, @@ -286,12 +181,11 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev, err_enable: thermal_zone_device_unregister(int34x_thermal_zone->zone); err_thermal_zone: + kfree(int34x_thermal_zone->trips); acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table); - kfree(int34x_thermal_zone->aux_trips); -err_trip_alloc: +err_trips_alloc: kfree(int34x_thermal_zone->ops); err_ops_alloc: - mutex_destroy(&int34x_thermal_zone->trip_mutex); kfree(int34x_thermal_zone); return ERR_PTR(ret); } @@ -302,13 +196,55 @@ void int340x_thermal_zone_remove(struct int34x_thermal_zone { thermal_zone_device_unregister(int34x_thermal_zone->zone); acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table); - kfree(int34x_thermal_zone->aux_trips); + kfree(int34x_thermal_zone->trips); kfree(int34x_thermal_zone->ops); - mutex_destroy(&int34x_thermal_zone->trip_mutex); kfree(int34x_thermal_zone); } EXPORT_SYMBOL_GPL(int340x_thermal_zone_remove); +void int340x_thermal_update_trips(struct int34x_thermal_zone *int34x_zone) +{ + struct acpi_device *zone_adev = int34x_zone->adev; + struct thermal_trip *zone_trips = int34x_zone->trips; + int trip_cnt = int34x_zone->zone->num_trips; + int act_trip_nr = 0; + int i; + + mutex_lock(&int34x_zone->zone->lock); + + for (i = int34x_zone->aux_trip_nr; i < trip_cnt; i++) { + struct thermal_trip trip; + int err; + + switch (zone_trips[i].type) { + case THERMAL_TRIP_CRITICAL: + err = thermal_acpi_trip_critical(zone_adev, &trip); + break; + case THERMAL_TRIP_HOT: + err = thermal_acpi_trip_hot(zone_adev, &trip); + break; + case THERMAL_TRIP_PASSIVE: + err = thermal_acpi_trip_passive(zone_adev, &trip); + break; + case THERMAL_TRIP_ACTIVE: + err = thermal_acpi_trip_active(zone_adev, act_trip_nr++, + &trip); + break; + default: + err = -ENODEV; + } + if (err) { + zone_trips[i].temperature = THERMAL_TEMP_INVALID; + continue; + } + + zone_trips[i].temperature = trip.temperature; + } + + mutex_unlock(&int34x_zone->zone->lock); +} +EXPORT_SYMBOL_GPL(int340x_thermal_update_trips); + MODULE_AUTHOR("Aaron Lu <aaron.lu@intel.com>"); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); MODULE_DESCRIPTION("Intel INT340x common thermal zone handler"); diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h index 6610a9cc441b..e0df6271facc 100644 --- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h +++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h @@ -10,6 +10,7 @@ #include <acpi/acpi_lpat.h> #define INT340X_THERMAL_MAX_ACT_TRIP_COUNT 10 +#define INT340X_THERMAL_MAX_TRIP_COUNT INT340X_THERMAL_MAX_ACT_TRIP_COUNT + 3 struct active_trip { int temp; @@ -19,26 +20,18 @@ struct active_trip { struct int34x_thermal_zone { struct acpi_device *adev; - struct active_trip act_trips[INT340X_THERMAL_MAX_ACT_TRIP_COUNT]; - unsigned long *aux_trips; + struct thermal_trip *trips; int aux_trip_nr; - int psv_temp; - int psv_trip_id; - int crt_temp; - int crt_trip_id; - int hot_temp; - int hot_trip_id; struct thermal_zone_device *zone; struct thermal_zone_device_ops *ops; void *priv_data; struct acpi_lpat_conversion_table *lpat_table; - struct mutex trip_mutex; }; struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *, int (*get_temp) (struct thermal_zone_device *, int *)); void int340x_thermal_zone_remove(struct int34x_thermal_zone *); -int int340x_thermal_read_trips(struct int34x_thermal_zone *int34x_zone); +void int340x_thermal_update_trips(struct int34x_thermal_zone *int34x_zone); static inline void int340x_thermal_zone_set_priv_data( struct int34x_thermal_zone *tzone, void *priv_data) diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c index 317703027ce9..a1dc18be7609 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c @@ -4,6 +4,7 @@ * Copyright (c) 2014, Intel Corporation. */ #include <linux/acpi.h> +#include <linux/intel_tcc.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> @@ -68,54 +69,17 @@ static const struct attribute_group power_limit_attribute_group = { .name = "power_limits" }; -static int tcc_get_offset(void) -{ - u64 val; - int err; - - err = rdmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, &val); - if (err) - return err; - - return (val >> 24) & 0x3f; -} - static ssize_t tcc_offset_degree_celsius_show(struct device *dev, struct device_attribute *attr, char *buf) { - int tcc; - - tcc = tcc_get_offset(); - if (tcc < 0) - return tcc; + int offset; - return sprintf(buf, "%d\n", tcc); -} - -static int tcc_offset_update(unsigned int tcc) -{ - u64 val; - int err; - - if (tcc > 63) - return -EINVAL; - - err = rdmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, &val); - if (err) - return err; - - if (val & BIT(31)) - return -EPERM; - - val &= ~GENMASK_ULL(29, 24); - val |= (tcc & 0x3f) << 24; - - err = wrmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, val); - if (err) - return err; + offset = intel_tcc_get_offset(-1); + if (offset < 0) + return offset; - return 0; + return sprintf(buf, "%d\n", offset); } static ssize_t tcc_offset_degree_celsius_store(struct device *dev, @@ -136,7 +100,7 @@ static ssize_t tcc_offset_degree_celsius_store(struct device *dev, if (kstrtouint(buf, 0, &tcc)) return -EINVAL; - err = tcc_offset_update(tcc); + err = intel_tcc_set_offset(-1, tcc); if (err) return err; @@ -145,66 +109,25 @@ static ssize_t tcc_offset_degree_celsius_store(struct device *dev, static DEVICE_ATTR_RW(tcc_offset_degree_celsius); -static int stored_tjmax; /* since it is fixed, we can have local storage */ - -static int get_tjmax(void) -{ - u32 eax, edx; - u32 val; - int err; - - err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &eax, &edx); - if (err) - return err; - - val = (eax >> 16) & 0xff; - if (val) - return val; - - return -EINVAL; -} - -static int read_temp_msr(int *temp) +static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone, + int *temp) { int cpu; - u32 eax, edx; - int err; - unsigned long curr_temp_off = 0; + int curr_temp; *temp = 0; for_each_online_cpu(cpu) { - err = rdmsr_safe_on_cpu(cpu, MSR_IA32_THERM_STATUS, &eax, - &edx); - if (err) - goto err_ret; - else { - if (eax & 0x80000000) { - curr_temp_off = (eax >> 16) & 0x7f; - if (!*temp || curr_temp_off < *temp) - *temp = curr_temp_off; - } else { - err = -EINVAL; - goto err_ret; - } - } + curr_temp = intel_tcc_get_temp(cpu, false); + if (curr_temp < 0) + return curr_temp; + if (!*temp || curr_temp > *temp) + *temp = curr_temp; } - return 0; -err_ret: - return err; -} - -static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone, - int *temp) -{ - int ret; - - ret = read_temp_msr(temp); - if (!ret) - *temp = (stored_tjmax - *temp) * 1000; + *temp *= 1000; - return ret; + return 0; } static int proc_thermal_read_ppcc(struct proc_thermal_device *proc_priv) @@ -298,8 +221,7 @@ int proc_thermal_add(struct device *dev, struct proc_thermal_device *proc_priv) status = acpi_evaluate_integer(adev->handle, "_TMP", NULL, &tmp); if (ACPI_FAILURE(status)) { /* there is no _TMP method, add local method */ - stored_tjmax = get_tjmax(); - if (stored_tjmax > 0) + if (intel_tcc_get_tjmax(-1) > 0) get_temp = proc_thermal_get_zone_temp; } @@ -352,7 +274,7 @@ static int tcc_offset_save = -1; int proc_thermal_suspend(struct device *dev) { - tcc_offset_save = tcc_get_offset(); + tcc_offset_save = intel_tcc_get_offset(-1); if (tcc_offset_save < 0) dev_warn(dev, "failed to save offset (%d)\n", tcc_offset_save); @@ -369,7 +291,7 @@ int proc_thermal_resume(struct device *dev) /* Do not update if saving failed */ if (tcc_offset_save >= 0) - tcc_offset_update(tcc_offset_save); + intel_tcc_set_offset(-1, tcc_offset_save); return 0; } @@ -456,6 +378,7 @@ void proc_thermal_mmio_remove(struct pci_dev *pdev, struct proc_thermal_device * } EXPORT_SYMBOL_GPL(proc_thermal_mmio_remove); +MODULE_IMPORT_NS(INTEL_TCC); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index bf1b1cdfade4..40725cbc6eb0 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -144,34 +144,6 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) return 0; } -static int sys_get_trip_temp(struct thermal_zone_device *tzd, - int trip, int *temp) -{ - struct proc_thermal_pci *pci_info = tzd->devdata; - u32 _temp; - - proc_thermal_mmio_read(pci_info, PROC_THERMAL_MMIO_THRES_0, &_temp); - if (!_temp) { - *temp = THERMAL_TEMP_INVALID; - } else { - int tjmax; - - proc_thermal_mmio_read(pci_info, PROC_THERMAL_MMIO_TJMAX, &tjmax); - _temp = tjmax - _temp; - *temp = (unsigned long)_temp * 1000; - } - - return 0; -} - -static int sys_get_trip_type(struct thermal_zone_device *tzd, int trip, - enum thermal_trip_type *type) -{ - *type = THERMAL_TRIP_PASSIVE; - - return 0; -} - static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) { struct proc_thermal_pci *pci_info = tzd->devdata; @@ -200,10 +172,26 @@ static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp return 0; } +static int get_trip_temp(struct proc_thermal_pci *pci_info) +{ + int temp, tjmax; + + proc_thermal_mmio_read(pci_info, PROC_THERMAL_MMIO_THRES_0, &temp); + if (!temp) + return THERMAL_TEMP_INVALID; + + proc_thermal_mmio_read(pci_info, PROC_THERMAL_MMIO_TJMAX, &tjmax); + temp = (tjmax - temp) * 1000; + + return temp; +} + +static struct thermal_trip psv_trip = { + .type = THERMAL_TRIP_PASSIVE, +}; + static struct thermal_zone_device_ops tzone_ops = { .get_temp = sys_get_curr_temp, - .get_trip_temp = sys_get_trip_temp, - .get_trip_type = sys_get_trip_type, .set_trip_temp = sys_set_trip_temp, }; @@ -251,7 +239,10 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev, const struct pci_device_ if (ret) goto err_ret_thermal; - pci_info->tzone = thermal_zone_device_register("TCPU_PCI", 1, 1, pci_info, + psv_trip.temperature = get_trip_temp(pci_info); + + pci_info->tzone = thermal_zone_device_register_with_trips("TCPU_PCI", &psv_trip, + 1, 1, pci_info, &tzone_ops, &tzone_params, 0, 0); if (IS_ERR(pci_info->tzone)) { diff --git a/drivers/thermal/intel/intel_menlow.c b/drivers/thermal/intel/intel_menlow.c index 3f885b08a490..5a6ad0552311 100644 --- a/drivers/thermal/intel/intel_menlow.c +++ b/drivers/thermal/intel/intel_menlow.c @@ -232,9 +232,9 @@ static DEFINE_MUTEX(intel_menlow_attr_lock); /* * sensor_get_auxtrip - get the current auxtrip value from sensor - * @name: Thermalzone name - * @auxtype : AUX0/AUX1 - * @buf: syfs buffer + * @handle: Object handle + * @index : GET_AUX1/GET_AUX0 + * @value : The address will be fill by the value */ static int sensor_get_auxtrip(acpi_handle handle, int index, unsigned long long *value) @@ -254,9 +254,9 @@ static int sensor_get_auxtrip(acpi_handle handle, int index, /* * sensor_set_auxtrip - set the new auxtrip value to sensor - * @name: Thermalzone name - * @auxtype : AUX0/AUX1 - * @buf: syfs buffer + * @handle: Object handle + * @index : GET_AUX1/GET_AUX0 + * @value : The value will be set */ static int sensor_set_auxtrip(acpi_handle handle, int index, int value) { diff --git a/drivers/thermal/intel/intel_pch_thermal.c b/drivers/thermal/intel/intel_pch_thermal.c index dabf11a687a1..45a9ea86907e 100644 --- a/drivers/thermal/intel/intel_pch_thermal.c +++ b/drivers/thermal/intel/intel_pch_thermal.c @@ -29,6 +29,7 @@ #define PCH_THERMAL_DID_CNL_LP 0x02F9 /* CNL-LP PCH */ #define PCH_THERMAL_DID_CML_H 0X06F9 /* CML-H PCH */ #define PCH_THERMAL_DID_LWB 0xA1B1 /* Lewisburg PCH */ +#define PCH_THERMAL_DID_WBG 0x8D24 /* Wellsburg PCH */ /* Wildcat Point-LP PCH Thermal registers */ #define WPT_TEMP 0x0000 /* Temperature */ @@ -65,6 +66,8 @@ #define WPT_TEMP_OFFSET (PCH_TEMP_OFFSET * MILLIDEGREE_PER_DEGREE) #define GET_PCH_TEMP(x) (((x) / 2) + PCH_TEMP_OFFSET) +#define PCH_MAX_TRIPS 3 /* critical, hot, passive */ + /* Amount of time for each cooling delay, 100ms by default for now */ static unsigned int delay_timeout = 100; module_param(delay_timeout, int, 0644); @@ -82,12 +85,7 @@ struct pch_thermal_device { const struct pch_dev_ops *ops; struct pci_dev *pdev; struct thermal_zone_device *tzd; - int crt_trip_id; - unsigned long crt_temp; - int hot_trip_id; - unsigned long hot_temp; - int psv_trip_id; - unsigned long psv_temp; + struct thermal_trip trips[PCH_MAX_TRIPS]; bool bios_enabled; }; @@ -102,33 +100,22 @@ static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, int *nr_trips) { struct acpi_device *adev; - - ptd->psv_trip_id = -1; + int ret; adev = ACPI_COMPANION(&ptd->pdev->dev); - if (adev) { - unsigned long long r; - acpi_status status; - - status = acpi_evaluate_integer(adev->handle, "_PSV", NULL, - &r); - if (ACPI_SUCCESS(status)) { - unsigned long trip_temp; - - trip_temp = deci_kelvin_to_millicelsius(r); - if (trip_temp) { - ptd->psv_temp = trip_temp; - ptd->psv_trip_id = *nr_trips; - ++(*nr_trips); - } - } - } + if (!adev) + return; + + ret = thermal_acpi_trip_passive(adev, &ptd->trips[*nr_trips]); + if (ret || ptd->trips[*nr_trips].temperature <= 0) + return; + + ++(*nr_trips); } #else static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, int *nr_trips) { - ptd->psv_trip_id = -1; } #endif @@ -163,21 +150,19 @@ static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips) } read_trips: - ptd->crt_trip_id = -1; trip_temp = readw(ptd->hw_base + WPT_CTT); trip_temp &= 0x1FF; if (trip_temp) { - ptd->crt_temp = GET_WPT_TEMP(trip_temp); - ptd->crt_trip_id = 0; + ptd->trips[*nr_trips].temperature = GET_WPT_TEMP(trip_temp); + ptd->trips[*nr_trips].type = THERMAL_TRIP_CRITICAL; ++(*nr_trips); } - ptd->hot_trip_id = -1; trip_temp = readw(ptd->hw_base + WPT_PHL); trip_temp &= 0x1FF; if (trip_temp) { - ptd->hot_temp = GET_WPT_TEMP(trip_temp); - ptd->hot_trip_id = *nr_trips; + ptd->trips[*nr_trips].temperature = GET_WPT_TEMP(trip_temp); + ptd->trips[*nr_trips].type = THERMAL_TRIP_HOT; ++(*nr_trips); } @@ -298,39 +283,6 @@ static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp) return ptd->ops->get_temp(ptd, temp); } -static int pch_get_trip_type(struct thermal_zone_device *tzd, int trip, - enum thermal_trip_type *type) -{ - struct pch_thermal_device *ptd = tzd->devdata; - - if (ptd->crt_trip_id == trip) - *type = THERMAL_TRIP_CRITICAL; - else if (ptd->hot_trip_id == trip) - *type = THERMAL_TRIP_HOT; - else if (ptd->psv_trip_id == trip) - *type = THERMAL_TRIP_PASSIVE; - else - return -EINVAL; - - return 0; -} - -static int pch_get_trip_temp(struct thermal_zone_device *tzd, int trip, int *temp) -{ - struct pch_thermal_device *ptd = tzd->devdata; - - if (ptd->crt_trip_id == trip) - *temp = ptd->crt_temp; - else if (ptd->hot_trip_id == trip) - *temp = ptd->hot_temp; - else if (ptd->psv_trip_id == trip) - *temp = ptd->psv_temp; - else - return -EINVAL; - - return 0; -} - static void pch_critical(struct thermal_zone_device *tzd) { dev_dbg(&tzd->device, "%s: critical temperature reached\n", tzd->type); @@ -338,8 +290,6 @@ static void pch_critical(struct thermal_zone_device *tzd) static struct thermal_zone_device_ops tzd_ops = { .get_temp = pch_thermal_get_temp, - .get_trip_type = pch_get_trip_type, - .get_trip_temp = pch_get_trip_temp, .critical = pch_critical, }; @@ -350,6 +300,7 @@ enum board_ids { board_cnl, board_cml, board_lwb, + board_wbg, }; static const struct board_info { @@ -380,6 +331,10 @@ static const struct board_info { .name = "pch_lewisburg", .ops = &pch_dev_ops_wpt, }, + [board_wbg] = { + .name = "pch_wellsburg", + .ops = &pch_dev_ops_wpt, + }, }; static int intel_pch_thermal_probe(struct pci_dev *pdev, @@ -423,8 +378,9 @@ static int intel_pch_thermal_probe(struct pci_dev *pdev, if (err) goto error_cleanup; - ptd->tzd = thermal_zone_device_register(bi->name, nr_trips, 0, ptd, - &tzd_ops, NULL, 0, 0); + ptd->tzd = thermal_zone_device_register_with_trips(bi->name, ptd->trips, + nr_trips, 0, ptd, + &tzd_ops, NULL, 0, 0); if (IS_ERR(ptd->tzd)) { dev_err(&pdev->dev, "Failed to register thermal zone %s\n", bi->name); @@ -495,6 +451,8 @@ static const struct pci_device_id intel_pch_thermal_id[] = { .driver_data = board_cml, }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_LWB), .driver_data = board_lwb, }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_WBG), + .driver_data = board_wbg, }, { 0, }, }; MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id); diff --git a/drivers/thermal/intel/intel_soc_dts_iosf.c b/drivers/thermal/intel/intel_soc_dts_iosf.c index 342b0bb5a56d..8c26f7b2316b 100644 --- a/drivers/thermal/intel/intel_soc_dts_iosf.c +++ b/drivers/thermal/intel/intel_soc_dts_iosf.c @@ -7,6 +7,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/bitops.h> +#include <linux/intel_tcc.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/interrupt.h> @@ -45,32 +46,6 @@ /* DTS0 and DTS 1 */ #define SOC_MAX_DTS_SENSORS 2 -static int get_tj_max(u32 *tj_max) -{ - u32 eax, edx; - u32 val; - int err; - - err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &eax, &edx); - if (err) - goto err_ret; - else { - val = (eax >> 16) & 0xff; - if (val) - *tj_max = val * 1000; - else { - err = -EINVAL; - goto err_ret; - } - } - - return 0; -err_ret: - *tj_max = 0; - - return err; -} - static int sys_get_trip_temp(struct thermal_zone_device *tzd, int trip, int *temp) { @@ -405,7 +380,7 @@ struct intel_soc_dts_sensors *intel_soc_dts_iosf_init( { struct intel_soc_dts_sensors *sensors; bool notification; - u32 tj_max; + int tj_max; int ret; int i; @@ -415,8 +390,9 @@ struct intel_soc_dts_sensors *intel_soc_dts_iosf_init( if (!trip_count || read_only_trip_count > trip_count) return ERR_PTR(-EINVAL); - if (get_tj_max(&tj_max)) - return ERR_PTR(-EINVAL); + tj_max = intel_tcc_get_tjmax(-1); + if (tj_max < 0) + return ERR_PTR(tj_max); sensors = kzalloc(sizeof(*sensors), GFP_KERNEL); if (!sensors) @@ -475,4 +451,5 @@ void intel_soc_dts_iosf_exit(struct intel_soc_dts_sensors *sensors) } EXPORT_SYMBOL_GPL(intel_soc_dts_iosf_exit); +MODULE_IMPORT_NS(INTEL_TCC); MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/intel/intel_tcc.c b/drivers/thermal/intel/intel_tcc.c new file mode 100644 index 000000000000..2e5c741c41ca --- /dev/null +++ b/drivers/thermal/intel/intel_tcc.c @@ -0,0 +1,139 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * intel_tcc.c - Library for Intel TCC (thermal control circuitry) MSR access + * Copyright (c) 2022, Intel Corporation. + */ + +#include <linux/errno.h> +#include <linux/intel_tcc.h> +#include <asm/msr.h> + +/** + * intel_tcc_get_tjmax() - returns the default TCC activation Temperature + * @cpu: cpu that the MSR should be run on, nagative value means any cpu. + * + * Get the TjMax value, which is the default thermal throttling or TCC + * activation temperature in degrees C. + * + * Return: Tjmax value in degrees C on success, negative error code otherwise. + */ +int intel_tcc_get_tjmax(int cpu) +{ + u32 low, high; + int val, err; + + if (cpu < 0) + err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &low, &high); + else + err = rdmsr_safe_on_cpu(cpu, MSR_IA32_TEMPERATURE_TARGET, &low, &high); + if (err) + return err; + + val = (low >> 16) & 0xff; + + return val ? val : -ENODATA; +} +EXPORT_SYMBOL_NS_GPL(intel_tcc_get_tjmax, INTEL_TCC); + +/** + * intel_tcc_get_offset() - returns the TCC Offset value to Tjmax + * @cpu: cpu that the MSR should be run on, nagative value means any cpu. + * + * Get the TCC offset value to Tjmax. The effective thermal throttling or TCC + * activation temperature equals "Tjmax" - "TCC Offset", in degrees C. + * + * Return: Tcc offset value in degrees C on success, negative error code otherwise. + */ +int intel_tcc_get_offset(int cpu) +{ + u32 low, high; + int err; + + if (cpu < 0) + err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &low, &high); + else + err = rdmsr_safe_on_cpu(cpu, MSR_IA32_TEMPERATURE_TARGET, &low, &high); + if (err) + return err; + + return (low >> 24) & 0x3f; +} +EXPORT_SYMBOL_NS_GPL(intel_tcc_get_offset, INTEL_TCC); + +/** + * intel_tcc_set_offset() - set the TCC offset value to Tjmax + * @cpu: cpu that the MSR should be run on, nagative value means any cpu. + * @offset: TCC offset value in degree C + * + * Set the TCC Offset value to Tjmax. The effective thermal throttling or TCC + * activation temperature equals "Tjmax" - "TCC Offset", in degree C. + * + * Return: On success returns 0, negative error code otherwise. + */ + +int intel_tcc_set_offset(int cpu, int offset) +{ + u32 low, high; + int err; + + if (offset < 0 || offset > 0x3f) + return -EINVAL; + + if (cpu < 0) + err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &low, &high); + else + err = rdmsr_safe_on_cpu(cpu, MSR_IA32_TEMPERATURE_TARGET, &low, &high); + if (err) + return err; + + /* MSR Locked */ + if (low & BIT(31)) + return -EPERM; + + low &= ~(0x3f << 24); + low |= offset << 24; + + if (cpu < 0) + return wrmsr_safe(MSR_IA32_TEMPERATURE_TARGET, low, high); + else + return wrmsr_safe_on_cpu(cpu, MSR_IA32_TEMPERATURE_TARGET, low, high); +} +EXPORT_SYMBOL_NS_GPL(intel_tcc_set_offset, INTEL_TCC); + +/** + * intel_tcc_get_temp() - returns the current temperature + * @cpu: cpu that the MSR should be run on, nagative value means any cpu. + * @pkg: true: Package Thermal Sensor. false: Core Thermal Sensor. + * + * Get the current temperature returned by the CPU core/package level + * thermal sensor, in degrees C. + * + * Return: Temperature in degrees C on success, negative error code otherwise. + */ +int intel_tcc_get_temp(int cpu, bool pkg) +{ + u32 low, high; + u32 msr = pkg ? MSR_IA32_PACKAGE_THERM_STATUS : MSR_IA32_THERM_STATUS; + int tjmax, temp, err; + + tjmax = intel_tcc_get_tjmax(cpu); + if (tjmax < 0) + return tjmax; + + if (cpu < 0) + err = rdmsr_safe(msr, &low, &high); + else + err = rdmsr_safe_on_cpu(cpu, msr, &low, &high); + if (err) + return err; + + /* Temperature is beyond the valid thermal sensor range */ + if (!(low & BIT(31))) + return -ENODATA; + + temp = tjmax - ((low >> 16) & 0x7f); + + /* Do not allow negative CPU temperature */ + return temp >= 0 ? temp : -ENODATA; +} +EXPORT_SYMBOL_NS_GPL(intel_tcc_get_temp, INTEL_TCC); diff --git a/drivers/thermal/intel/intel_tcc_cooling.c b/drivers/thermal/intel/intel_tcc_cooling.c index a89e7e1890e4..e95f799454fe 100644 --- a/drivers/thermal/intel/intel_tcc_cooling.c +++ b/drivers/thermal/intel/intel_tcc_cooling.c @@ -7,12 +7,11 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/device.h> +#include <linux/intel_tcc.h> #include <linux/module.h> #include <linux/thermal.h> #include <asm/cpu_device_id.h> -#define TCC_SHIFT 24 -#define TCC_MASK (0x3fULL<<24) #define TCC_PROGRAMMABLE BIT(30) #define TCC_LOCKED BIT(31) @@ -21,47 +20,26 @@ static struct thermal_cooling_device *tcc_cdev; static int tcc_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state) { - *state = TCC_MASK >> TCC_SHIFT; - return 0; -} - -static int tcc_offset_update(int tcc) -{ - u64 val; - int err; - - err = rdmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, &val); - if (err) - return err; - - val &= ~TCC_MASK; - val |= tcc << TCC_SHIFT; - - err = wrmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, val); - if (err) - return err; - + *state = 0x3f; return 0; } static int tcc_get_cur_state(struct thermal_cooling_device *cdev, unsigned long *state) { - u64 val; - int err; + int offset = intel_tcc_get_offset(-1); - err = rdmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, &val); - if (err) - return err; + if (offset < 0) + return offset; - *state = (val & TCC_MASK) >> TCC_SHIFT; + *state = offset; return 0; } static int tcc_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) { - return tcc_offset_update(state); + return intel_tcc_set_offset(-1, (int)state); } static const struct thermal_cooling_device_ops tcc_cooling_ops = { @@ -140,6 +118,7 @@ static void __exit tcc_cooling_exit(void) module_exit(tcc_cooling_exit) +MODULE_IMPORT_NS(INTEL_TCC); MODULE_DESCRIPTION("TCC offset cooling device Driver"); MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c index 494f25250c2d..1c2de84742df 100644 --- a/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -7,6 +7,7 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/intel_tcc.h> #include <linux/err.h> #include <linux/param.h> #include <linux/device.h> @@ -48,7 +49,6 @@ MODULE_PARM_DESC(notify_delay_ms, struct zone_device { int cpu; bool work_scheduled; - u32 tj_max; u32 msr_pkg_therm_low; u32 msr_pkg_therm_high; struct delayed_work work; @@ -105,38 +105,18 @@ static struct zone_device *pkg_temp_thermal_get_dev(unsigned int cpu) return NULL; } -/* -* tj-max is interesting because threshold is set relative to this -* temperature. -*/ -static int get_tj_max(int cpu, u32 *tj_max) -{ - u32 eax, edx, val; - int err; - - err = rdmsr_safe_on_cpu(cpu, MSR_IA32_TEMPERATURE_TARGET, &eax, &edx); - if (err) - return err; - - val = (eax >> 16) & 0xff; - *tj_max = val * 1000; - - return val ? 0 : -EINVAL; -} - static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) { struct zone_device *zonedev = tzd->devdata; - u32 eax, edx; + int val; - rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_STATUS, - &eax, &edx); - if (eax & 0x80000000) { - *temp = zonedev->tj_max - ((eax >> 16) & 0x7f) * 1000; - pr_debug("sys_get_curr_temp %d\n", *temp); - return 0; - } - return -EINVAL; + val = intel_tcc_get_temp(zonedev->cpu, true); + if (val < 0) + return val; + + *temp = val * 1000; + pr_debug("sys_get_curr_temp %d\n", *temp); + return 0; } static int @@ -144,9 +124,14 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) { struct zone_device *zonedev = tzd->devdata; u32 l, h, mask, shift, intr; - int ret; + int tj_max, ret; - if (trip >= MAX_NUMBER_OF_TRIPS || temp >= zonedev->tj_max) + tj_max = intel_tcc_get_tjmax(zonedev->cpu); + if (tj_max < 0) + return tj_max; + tj_max *= 1000; + + if (trip >= MAX_NUMBER_OF_TRIPS || temp >= tj_max) return -EINVAL; ret = rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT, @@ -171,7 +156,7 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) if (!temp) { l &= ~intr; } else { - l |= (zonedev->tj_max - temp)/1000 << shift; + l |= (tj_max - temp)/1000 << shift; l |= intr; } @@ -326,9 +311,10 @@ static struct thermal_trip *pkg_temp_thermal_trips_init(int cpu, int tj_max, int static int pkg_temp_thermal_device_add(unsigned int cpu) { int id = topology_logical_die_id(cpu); - u32 tj_max, eax, ebx, ecx, edx; + u32 eax, ebx, ecx, edx; struct zone_device *zonedev; int thres_count, err; + int tj_max; if (id >= max_id) return -ENOMEM; @@ -340,9 +326,9 @@ static int pkg_temp_thermal_device_add(unsigned int cpu) thres_count = clamp_val(thres_count, 0, MAX_NUMBER_OF_TRIPS); - err = get_tj_max(cpu, &tj_max); - if (err) - return err; + tj_max = intel_tcc_get_tjmax(cpu); + if (tj_max < 0) + return tj_max; zonedev = kzalloc(sizeof(*zonedev), GFP_KERNEL); if (!zonedev) @@ -356,7 +342,6 @@ static int pkg_temp_thermal_device_add(unsigned int cpu) INIT_DELAYED_WORK(&zonedev->work, pkg_temp_thermal_threshold_work_fn); zonedev->cpu = cpu; - zonedev->tj_max = tj_max; zonedev->tzone = thermal_zone_device_register_with_trips("x86_pkg_temp", zonedev->trips, thres_count, (thres_count == MAX_NUMBER_OF_TRIPS) ? 0x03 : 0x01, @@ -545,6 +530,7 @@ static void __exit pkg_temp_thermal_exit(void) } module_exit(pkg_temp_thermal_exit) +MODULE_IMPORT_NS(INTEL_TCC); MODULE_DESCRIPTION("X86 PKG TEMP Thermal Driver"); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/thermal_acpi.c b/drivers/thermal/thermal_acpi.c new file mode 100644 index 000000000000..671f774a7621 --- /dev/null +++ b/drivers/thermal/thermal_acpi.c @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2023 Linaro Limited + * Copyright 2023 Intel Corporation + * + * Library routines for populating a generic thermal trip point structure + * with data obtained by evaluating a specific object in the ACPI Namespace. + */ +#include <linux/acpi.h> +#include <linux/units.h> + +#include "thermal_core.h" + +/* + * Minimum temperature for full military grade is 218°K (-55°C) and + * max temperature is 448°K (175°C). We can consider those values as + * the boundaries for the [trips] temperature returned by the + * firmware. Any values out of these boundaries may be considered + * bogus and we can assume the firmware has no data to provide. + */ +#define TEMP_MIN_DECIK 2180 +#define TEMP_MAX_DECIK 4480 + +static int thermal_acpi_trip_init(struct acpi_device *adev, + enum thermal_trip_type type, int id, + struct thermal_trip *trip) +{ + unsigned long long temp; + acpi_status status; + char obj_name[5]; + + switch (type) { + case THERMAL_TRIP_ACTIVE: + if (id < 0 || id > 9) + return -EINVAL; + + obj_name[1] = 'A'; + obj_name[2] = 'C'; + obj_name[3] = '0' + id; + break; + case THERMAL_TRIP_PASSIVE: + obj_name[1] = 'P'; + obj_name[2] = 'S'; + obj_name[3] = 'V'; + break; + case THERMAL_TRIP_HOT: + obj_name[1] = 'H'; + obj_name[2] = 'O'; + obj_name[3] = 'T'; + break; + case THERMAL_TRIP_CRITICAL: + obj_name[1] = 'C'; + obj_name[2] = 'R'; + obj_name[3] = 'T'; + break; + } + + obj_name[0] = '_'; + obj_name[4] = '\0'; + + status = acpi_evaluate_integer(adev->handle, obj_name, NULL, &temp); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(adev->handle, "%s evaluation failed\n", obj_name); + return -ENODATA; + } + + if (temp >= TEMP_MIN_DECIK && temp <= TEMP_MAX_DECIK) { + trip->temperature = deci_kelvin_to_millicelsius(temp); + } else { + acpi_handle_debug(adev->handle, "%s result %llu out of range\n", + obj_name, temp); + trip->temperature = THERMAL_TEMP_INVALID; + } + + trip->hysteresis = 0; + trip->type = type; + + return 0; +} + +/** + * thermal_acpi_trip_active - Get the specified active trip point + * @adev: Thermal zone ACPI device object to get the description from. + * @id: Active cooling level (0 - 9). + * @trip: Trip point structure to be populated on success. + * + * Evaluate the _ACx object for the thermal zone represented by @adev to obtain + * the temperature of the active cooling trip point corresponding to the active + * cooling level given by @id and initialize @trip as an active trip point using + * that temperature value. + * + * Return 0 on success or a negative error value on failure. + */ +int thermal_acpi_trip_active(struct acpi_device *adev, int id, + struct thermal_trip *trip) +{ + return thermal_acpi_trip_init(adev, THERMAL_TRIP_ACTIVE, id, trip); +} +EXPORT_SYMBOL_GPL(thermal_acpi_trip_active); + +/** + * thermal_acpi_trip_passive - Get the passive trip point + * @adev: Thermal zone ACPI device object to get the description from. + * @trip: Trip point structure to be populated on success. + * + * Evaluate the _PSV object for the thermal zone represented by @adev to obtain + * the temperature of the passive cooling trip point and initialize @trip as a + * passive trip point using that temperature value. + * + * Return 0 on success or -ENODATA on failure. + */ +int thermal_acpi_trip_passive(struct acpi_device *adev, struct thermal_trip *trip) +{ + return thermal_acpi_trip_init(adev, THERMAL_TRIP_PASSIVE, INT_MAX, trip); +} +EXPORT_SYMBOL_GPL(thermal_acpi_trip_passive); + +/** + * thermal_acpi_trip_hot - Get the near critical trip point + * @adev: the ACPI device to get the description from. + * @trip: a &struct thermal_trip to be filled if the function succeed. + * + * Evaluate the _HOT object for the thermal zone represented by @adev to obtain + * the temperature of the trip point at which the system is expected to be put + * into the S4 sleep state and initialize @trip as a hot trip point using that + * temperature value. + * + * Return 0 on success or -ENODATA on failure. + */ +int thermal_acpi_trip_hot(struct acpi_device *adev, struct thermal_trip *trip) +{ + return thermal_acpi_trip_init(adev, THERMAL_TRIP_HOT, INT_MAX, trip); +} +EXPORT_SYMBOL_GPL(thermal_acpi_trip_hot); + +/** + * thermal_acpi_trip_critical - Get the critical trip point + * @adev: the ACPI device to get the description from. + * @trip: a &struct thermal_trip to be filled if the function succeed. + * + * Evaluate the _CRT object for the thermal zone represented by @adev to obtain + * the temperature of the critical cooling trip point and initialize @trip as a + * critical trip point using that temperature value. + * + * Return 0 on success or -ENODATA on failure. + */ +int thermal_acpi_trip_critical(struct acpi_device *adev, struct thermal_trip *trip) +{ + return thermal_acpi_trip_init(adev, THERMAL_TRIP_CRITICAL, INT_MAX, trip); +} +EXPORT_SYMBOL_GPL(thermal_acpi_trip_critical); |