| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Intel Uncore Frequency Control: Common defines and prototypes |
| * Copyright (c) 2022, Intel Corporation. |
| * All rights reserved. |
| * |
| */ |
| |
| #ifndef __INTEL_UNCORE_FREQ_COMMON_H |
| #define __INTEL_UNCORE_FREQ_COMMON_H |
| |
| #include <linux/device.h> |
| |
| /** |
| * struct uncore_data - Encapsulate all uncore data |
| * @stored_uncore_data: Last user changed MSR 620 value, which will be restored |
| * on system resume. |
| * @initial_min_freq_khz: Sampled minimum uncore frequency at driver init |
| * @initial_max_freq_khz: Sampled maximum uncore frequency at driver init |
| * @control_cpu: Designated CPU for a die to read/write |
| * @valid: Mark the data valid/invalid |
| * @package_id: Package id for this instance |
| * @die_id: Die id for this instance |
| * @name: Sysfs entry name for this instance |
| * @uncore_attr_group: Attribute group storage |
| * @max_freq_khz_dev_attr: Storage for device attribute max_freq_khz |
| * @mix_freq_khz_dev_attr: Storage for device attribute min_freq_khz |
| * @initial_max_freq_khz_dev_attr: Storage for device attribute initial_max_freq_khz |
| * @initial_min_freq_khz_dev_attr: Storage for device attribute initial_min_freq_khz |
| * @current_freq_khz_dev_attr: Storage for device attribute current_freq_khz |
| * @uncore_attrs: Attribute storage for group creation |
| * |
| * This structure is used to encapsulate all data related to uncore sysfs |
| * settings for a die/package. |
| */ |
| struct uncore_data { |
| u64 stored_uncore_data; |
| u32 initial_min_freq_khz; |
| u32 initial_max_freq_khz; |
| int control_cpu; |
| bool valid; |
| int package_id; |
| int die_id; |
| char name[32]; |
| |
| struct attribute_group uncore_attr_group; |
| struct device_attribute max_freq_khz_dev_attr; |
| struct device_attribute min_freq_khz_dev_attr; |
| struct device_attribute initial_max_freq_khz_dev_attr; |
| struct device_attribute initial_min_freq_khz_dev_attr; |
| struct device_attribute current_freq_khz_dev_attr; |
| struct attribute *uncore_attrs[6]; |
| }; |
| |
| int uncore_freq_common_init(int (*read_control_freq)(struct uncore_data *data, unsigned int *min, unsigned int *max), |
| int (*write_control_freq)(struct uncore_data *data, unsigned int input, unsigned int min_max), |
| int (*uncore_read_freq)(struct uncore_data *data, unsigned int *freq)); |
| void uncore_freq_common_exit(void); |
| int uncore_freq_add_entry(struct uncore_data *data, int cpu); |
| void uncore_freq_remove_die_entry(struct uncore_data *data); |
| |
| #endif |
