+ Datasheet: http://acpi.info/, section 10.4. When both of them are set, an ACPI event will be broadcast on the ACPI netlink If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media. 2. For example, ACPI defines a power button, a sleep button, and system indicators. Copy the command below, paste it into the command window and press ENTER: 3. It, or its presumed origin, has been blamed for system crashes. + return sprintf(buf, "%llu\n", resource->power * 1000); +static ssize_t show_str(struct device *dev. Kernel driver power_meter The Linux Kernel documentation The Linux Kernel 6.1.0-rc8 A guide to the Kernel Development Process Submitting patches: the essential guide to getting your code into the kernel Code of conduct Kernel Maintainer Handbook All development-process docs Core API Documentation The Linux driver implementer's API guide + sensors->dev_attr.attr.name = rw->label; + sensors->dev_attr.attr.mode = S_IRUGO | S_IWUSR; +static void remove_attrs(struct acpi_power_meter_resource *resource), + for (i = 0; i < resource->num_sensors; i++) {, + if (!resource->sensors[i].dev_attr.attr.name). Say Y (or M) if you have an Intel or AMD computer with. socket and a poll notification will be sent to the appropriate + struct acpi_power_meter_resource *resource; + if (!device || !acpi_driver_data(device)). The AcpiPmi service is using the acpipmi.sys file that is located in the C:\Windows\System32\drivers directory. Both power[1-*]_average_{min,max} must be set before the trip points will work. 2. A WDM driver that provides the Power Meter Interface (PMI) accesses power metering and budgeting (PMB) information from the underlying hardware platform. This second revision of the driver also exports the ACPI string info as sysfs attributes, a list of the devices that the meter measures, and will send ACPI notifications over the ACPI netlink socket. Run the Command Prompt as an administrator. Close the command window and restart the computer. Right-click the downloaded batch file and select Run as administrator. + return sprintf(buf, "%s\n", ACPI_POWER_METER_NAME); +/* Sensor descriptions. Copy the command below, paste it into the command window and press ENTER: 3. 3. In Windows 8 it will not be started until the user starts it. These devices have a simple set of features--a power meter that returns average power use over a configurable interval, an optional capping mechanism, and a couple of trip points. ACPI Power Metering Driver by Microsoft Corporation. 2. Save the RestoreACPIPowerMeterDriverWindows10.bat file to any folder on your hard drive. Copyright The kernel development community. AMDGPU Driver with KFD used by the ROCm project. Save the RestoreACPIPowerMeterDriverWindows8.bat file to any folder on your hard drive. featuresa power meter that returns average power use over a configurable Startup Type. the netlink event socket and a poll notification will be sent to the 1. Restore Default Startup Type of ACPI Power Meter Driver Automated Restore 1. There are a few other ACPI notifications that can be sent by the firmware. +Both power[1-*]_average_{min,max} must be set before the trip points will work. + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PTP")); +static ssize_t set_trip(struct device *dev, struct device_attribute *devattr. + strncpy(*str, element->string.pointer, element->string.length); + dev_info(&resource->acpi_dev->dev, "Found ACPI power meter.\n"); +static void acpi_power_meter_notify(struct acpi_device *device, u32 event). Save the RestoreACPIPowerMeterDriverWindows7.bat file to any folder on your hard drive. +This driver talks to ACPI 4.0 power meters. 64-bit. +strings that ACPI provides with the meter. These objects provide an abstraction layer to the protocol that is used for power metering and budgeting by the hardware platform. ACPI Power Metering Driver by Microsoft Corporation. The power[1-*]_is_battery knob indicates if the power supply is a battery. + val = resource->trip[attr->index - 7] * 1000; +static ssize_t show_accuracy(struct device *dev. If ACPI Power Meter Driver fails to start, the error is logged. > and will send ACPI notifications over the ACPI netlink socket. Right-click the downloaded batch file and select Run as administrator. appropriate power[1-*]_alarm file to indicate that capping has begun, and the The AcpiPmi service is using the acpipmi.sys file that is located in the C:\Windows\System32\drivers directory. average power consumption exceeds the cap, an ACPI event will be broadcast on These devices have a simple set of features-a power meter that returns average power use over a configurable interval, an optional capping mechanism, and a couple of trip points. + return sprintf(buf, "%llu\n", resource->cap * 1000); +static ssize_t set_cap(struct device *dev, struct device_attribute *devattr, + if (temp > resource->caps.max_cap || temp < resource->caps.min_cap). + union acpi_object arg0 = { ACPI_TYPE_INTEGER }; + struct acpi_object_list args = { 1, &arg0 }; + if (temp > resource->caps.max_avg_interval ||, + temp < resource->caps.min_avg_interval). The platform exposes this information by using the ACPI 4.0 Power Metering objects. + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_power_meter_resource *resource = acpi_dev->driver_data; + return sprintf(buf, "%llu\n", resource->avg_interval); +static ssize_t set_avg_interval(struct device *dev. + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SHL")); +static int set_acpi_trip(struct acpi_power_meter_resource *resource). + struct device *dev = &resource->acpi_dev->dev; + struct sensor_device_attribute *sensors =. + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMC")); + dev_err(&resource->acpi_dev->dev, PREFIX "Invalid _PMC data\n"); + /* Grab all the integer data at once */. Then Windows 10 will start up and notify the user that the AcpiPmi service has failed to start due to the error. These devices have a simple set of, +features--a power meter that returns average power use over a configurable. ACPI Power Metering Driver by Microsoft Corporation. Microsoft ACPI-Compliant Power Meter Device - Driver Download * Vendor: Microsoft * Product: Microsoft ACPI-Compliant Power Meter Device * Hardware Class: System . 2. > + status = acpi_evaluate_integer(resource->acpi_dev->handle, "_SHL". If this is Maxim power-meter-based system architecture. + state.length = sizeof(struct acpi_power_meter_capabilities); + status = acpi_extract_package(pss, &format, &state); + ACPI_EXCEPTION((AE_INFO, status, "Invalid data")); + dev_err(&resource->acpi_dev->dev, PREFIX "Unknown unit %llu.\n", + if (element->type != ACPI_TYPE_STRING) {. + &resource->domain_devices[i]); + res = sysfs_create_link(resource->holders_dir, &obj->dev.kobj. interval. Also contains the current Linux Kernel that matches this base driver - ROCK-Kernel-Driver/acpi_power_meter.c at . This driver exposes ACPI 4.0 compliant power meters as hardware monitoring devices. This message is generally interpreted as meaning: The system is operating under an unsafe power cap and Linux is ignoring this fact, thus living dangerously. If ACPI Power Meter Driver fails to start, the error details are added to Windows 8 error log. This driver implements sensor reading support for the power meters exposed in +{"power1_average_interval_min", show_val, 0}. This driver implements sensor reading support for the power meters exposed in the ACPI 4.0 spec (Chapter 10.4). Windows 8 startup proceeds, but a message box is displayed informing you that the AcpiPmi service has failed to start. Author: Darrick J. Wong Description ----- This driver implements sensor reading support for the power meters exposed in the ACPI 4.0 spec (Chapter 10.4). This second revision of the driver also exports the ACPI string arbitrary strings that ACPI provides with the meter. This section provides a high-level overview of the ACPI PMI. Windows 10 64-Bit Driver . The ACPI Power Meter Driver service is a kernel device driver. + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMD")); + dev_err(&resource->acpi_dev->dev, PREFIX "Invalid _PMD data\n"); + resource->domain_devices = kzalloc(sizeof(struct acpi_device *) *. Most likely this will of Naming and data format standards for sysfs files. The responsibilities of Acpi.sys include support for power management and Plug and Play (PnP) device enumeration. +{"power1_average_max", show_val, set_trip, 8}, +static struct ro_sensor_template misc_attrs[] = {, +static void remove_domain_devices(struct acpi_power_meter_resource *resource), + for (i = 0; i < resource->num_domain_devices; i++) {. If ACPI Power Meter Driver fails to start, the failure details are being recorded into Event Log. + status = acpi_evaluate_integer(resource->acpi_dev->handle, "_SHL". Close the command window and restart the computer. + resource->num_domain_devices = pss->package.count; + for (i = 0; i < pss->package.count; i++) {. + status = acpi_bus_get_device(element->reference.handle. + pss->package.count, GFP_KERNEL); + resource->holders_dir = kobject_create_and_add("measures". power[1-*]_interval will be notified if the firmware changes the averaging all cases the ACPI event will be broadcast on the ACPI netlink event socket as + status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PAI". + res = register_rw_attrs(resource, trip_attrs); + res = register_ro_attrs(resource, misc_attrs); +static void free_capabilities(struct acpi_power_meter_resource *resource), +static int read_capabilities(struct acpi_power_meter_resource *resource). The AcpiPmi service is using the acpipmi.sys file that is located in the C:\Windows\System32\drivers directory. The platform exposes this information by using the ACPI 4.0 Power Metering objects. Close the command window and restart the computer. + res = register_rw_attrs(resource, rw_cap_attrs); + res = register_ro_attrs(resource, ro_cap_attrs); + res = register_ro_attrs(resource, misc_cap_attrs); + if (resource->caps.flags & POWER_METER_CAN_TRIP) {. + arg_objs[0].integer.value = resource->trip[1]; + arg_objs[1].integer.value = resource->trip[0]; + status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PTP". ACPI Power Meter Driver is a kernel device driver. + const char *buf, size_t count); +static int update_avg_interval(struct acpi_power_meter_resource *resource). + val = resource->caps.min_avg_interval; + val = resource->caps.max_avg_interval; + if (resource->caps.hysteresis == UNKNOWN_HYSTERESIS). Linux preempt-rt Check our new training course Real-Time Linux with PREEMPT_RT When the operating system startup is complete, the user is being notified that the AcpiPmi service hasn't been started. 1. Copy the command below, paste it into the command window and press ENTER: sc config AcpiPmi start= demand 3. +ACPI_MODULE_NAME(ACPI_POWER_METER_NAME); +#define ACPI_POWER_METER_DEVICE_NAME "Power Meter", +#define ACPI_POWER_METER_CLASS "power_meter_resource", +#define POWER_METER_CAN_MEASURE (1 << 0), +static struct acpi_device_id power_meter_ids[] = {. > + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PAI")); > +static ssize_t set_cap(struct device *dev, struct device_attribute *devattr, > + const char *buf, size_t count), > + if (temp > resource->caps.max_cap || temp < resource->caps.min_cap). The Windows ACPI driver, Acpi.sys, is an inbox component of the Windows operating system. When the operating system startup is complete, the user is being notified that the AcpiPmi service hasn't been started. power[1-*]_average sysfs file. These devices have a simple set of + To compile this driver as a module, choose M here: + the module will be called power-meter. See the. This driver exposes ACPI 4.0 compliant power meters as hardware monitoring devices. This service also exists in Windows 10 and 7. This driver talks to ACPI 4.0 power meters. + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _GAI")); +static ssize_t show_avg_interval(struct device *dev. +interval, an optional capping mechanism, and a couple of trip points. + struct device_attribute *devattr. 3. If the file is removed or corrupted, read this article to restore its original version from Windows 8 installation media. + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMM")); + resource->sensors_last_updated = jiffies; +static ssize_t show_power(struct device *dev. Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1; Core: Manual: Manual: Manual: Pro: Manual: Manual: Manual: Enterprise: Manual: Manual: Manual: Default Properties. When the */, +static struct ro_sensor_template meter_ro_attrs[] = {. This service also exists in Windows 10 and 7. On hardware platforms that have an ACPI BIOS, the HAL causes Acpi.sys to be loaded during system startup at the base of the device tree. + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PAI")); +static int update_cap(struct acpi_power_meter_resource *resource). +static ssize_t show_val(struct device *dev. In Windows 8 it will not be started until the user starts it. ACPI Power Metering Driver by Microsoft Corporation. 2. %SystemRoot%\System32\drivers\acpipmi.sys, HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AcpiPmi. Run the Command Prompt as an administrator. Select your Windows 8 release and edition, and then click on the Download button below. +{"power1_average_interval", show_avg_interval, set_avg_interval, 0}, +static struct ro_sensor_template misc_cap_attrs[] = {, +static struct ro_sensor_template ro_cap_attrs[] = {, +static struct rw_sensor_template rw_cap_attrs[] = {, +static struct rw_sensor_template trip_attrs[] = {. the case, the power[1-*]_cap and related sysfs files will appear. > + struct acpi_device *acpi_dev = to_acpi_device(dev); > + struct acpi_power_meter_resource *resource = acpi_dev->driver_data; > + union acpi_object arg0 = { ACPI_TYPE_INTEGER }; > + struct acpi_object_list args = { 1, &arg0 }; > + res = strict_strtoul(buf, 10, &temp); > + if (temp > resource->caps.max_avg_interval ||, > + temp < resource->caps.min_avg_interval). The driver does this by using the ACPI PMI objects. + res = register_ro_attrs(resource, meter_ro_attrs); + res = register_rw_attrs(resource, meter_rw_attrs); + if (resource->caps.flags & POWER_METER_CAN_CAP) {, + if (resource->caps.configurable_cap) {. Next in thread: ykzhao: "Re: [PATCH 2/2] acpi_power_meter: hwmon driver for ACPI 4.0 powermeters" Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] This driver exposes ACPI 4.0 compliant power meters as hardware monitoring Right-click the downloaded batch file and select Run as administrator. %SystemRoot%\System32\drivers\acpipmi.sys, HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AcpiPmi. Signed-off-by: Darrick J. Wong
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