1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Intel Uncore Frequency Control: Common defines and prototypes
4 * Copyright (c) 2022, Intel Corporation.
9 #ifndef __INTEL_UNCORE_FREQ_COMMON_H
10 #define __INTEL_UNCORE_FREQ_COMMON_H
12 #include <linux/device.h>
15 * struct uncore_data - Encapsulate all uncore data
16 * @stored_uncore_data: Last user changed MSR 620 value, which will be restored
18 * @initial_min_freq_khz: Sampled minimum uncore frequency at driver init
19 * @initial_max_freq_khz: Sampled maximum uncore frequency at driver init
20 * @control_cpu: Designated CPU for a die to read/write
21 * @valid: Mark the data valid/invalid
22 * @package_id: Package id for this instance
23 * @die_id: Die id for this instance
24 * @domain_id: Power domain id for this instance
25 * @cluster_id: cluster id in a domain
26 * @instance_id: Unique instance id to append to directory name
27 * @name: Sysfs entry name for this instance
28 * @uncore_attr_group: Attribute group storage
29 * @max_freq_khz_kobj_attr: Storage for kobject attribute max_freq_khz
30 * @mix_freq_khz_kobj_attr: Storage for kobject attribute min_freq_khz
31 * @initial_max_freq_khz_kobj_attr: Storage for kobject attribute initial_max_freq_khz
32 * @initial_min_freq_khz_kobj_attr: Storage for kobject attribute initial_min_freq_khz
33 * @current_freq_khz_kobj_attr: Storage for kobject attribute current_freq_khz
34 * @domain_id_kobj_attr: Storage for kobject attribute domain_id
35 * @fabric_cluster_id_kobj_attr: Storage for kobject attribute fabric_cluster_id
36 * @package_id_kobj_attr: Storage for kobject attribute package_id
37 * @uncore_attrs: Attribute storage for group creation
39 * This structure is used to encapsulate all data related to uncore sysfs
40 * settings for a die/package.
43 u64 stored_uncore_data;
44 u32 initial_min_freq_khz;
45 u32 initial_max_freq_khz;
55 struct attribute_group uncore_attr_group;
56 struct kobj_attribute max_freq_khz_kobj_attr;
57 struct kobj_attribute min_freq_khz_kobj_attr;
58 struct kobj_attribute initial_max_freq_khz_kobj_attr;
59 struct kobj_attribute initial_min_freq_khz_kobj_attr;
60 struct kobj_attribute current_freq_khz_kobj_attr;
61 struct kobj_attribute domain_id_kobj_attr;
62 struct kobj_attribute fabric_cluster_id_kobj_attr;
63 struct kobj_attribute package_id_kobj_attr;
64 struct attribute *uncore_attrs[9];
67 #define UNCORE_DOMAIN_ID_INVALID -1
69 int uncore_freq_common_init(int (*read_control_freq)(struct uncore_data *data, unsigned int *min, unsigned int *max),
70 int (*write_control_freq)(struct uncore_data *data, unsigned int input, unsigned int min_max),
71 int (*uncore_read_freq)(struct uncore_data *data, unsigned int *freq));
72 void uncore_freq_common_exit(void);
73 int uncore_freq_add_entry(struct uncore_data *data, int cpu);
74 void uncore_freq_remove_die_entry(struct uncore_data *data);