diff options
Diffstat (limited to 'drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.h')
| -rw-r--r-- | drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.h b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.h new file mode 100644 index 000000000..2d9dc3151 --- /dev/null +++ b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.h @@ -0,0 +1,62 @@ +/* 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 kobject attribute max_freq_khz + * @mix_freq_khz_dev_attr: Storage for kobject attribute min_freq_khz + * @initial_max_freq_khz_dev_attr: Storage for kobject attribute initial_max_freq_khz + * @initial_min_freq_khz_dev_attr: Storage for kobject attribute initial_min_freq_khz + * @current_freq_khz_dev_attr: Storage for kobject 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 kobj_attribute max_freq_khz_kobj_attr; + struct kobj_attribute min_freq_khz_kobj_attr; + struct kobj_attribute initial_max_freq_khz_kobj_attr; + struct kobj_attribute initial_min_freq_khz_kobj_attr; + struct kobj_attribute current_freq_khz_kobj_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 |