1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * intel_tpmi.h: Intel TPMI core external interface
4 */
5
6#ifndef _INTEL_TPMI_H_
7#define _INTEL_TPMI_H_
8
9#include <linux/bitfield.h>
10
11#define TPMI_VERSION_INVALID 0xff
12#define TPMI_MINOR_VERSION(val) FIELD_GET(GENMASK(4, 0), val)
13#define TPMI_MAJOR_VERSION(val) FIELD_GET(GENMASK(7, 5), val)
14
15/*
16 * List of supported TMPI IDs.
17 * Some TMPI IDs are not used by Linux, so the numbers are not consecutive.
18 */
19enum intel_tpmi_id {
20 TPMI_ID_RAPL = 0, /* Running Average Power Limit */
21 TPMI_ID_PEM = 1, /* Power and Perf excursion Monitor */
22 TPMI_ID_UNCORE = 2, /* Uncore Frequency Scaling */
23 TPMI_ID_SST = 5, /* Speed Select Technology */
24 TPMI_CONTROL_ID = 0x80, /* Special ID for getting feature status */
25 TPMI_INFO_ID = 0x81, /* Special ID for PCI BDF and Package ID information */
26};
27
28/**
29 * struct intel_tpmi_plat_info - Platform information for a TPMI device instance
30 * @package_id: CPU Package id
31 * @bus_number: PCI bus number
32 * @device_number: PCI device number
33 * @function_number: PCI function number
34 *
35 * Structure to store platform data for a TPMI device instance. This
36 * struct is used to return data via tpmi_get_platform_data().
37 */
38struct intel_tpmi_plat_info {
39 u8 package_id;
40 u8 bus_number;
41 u8 device_number;
42 u8 function_number;
43};
44
45struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *auxdev);
46struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index);
47int tpmi_get_resource_count(struct auxiliary_device *auxdev);
48int tpmi_get_feature_status(struct auxiliary_device *auxdev, int feature_id, bool *read_blocked,
49 bool *write_blocked);
50#endif
51

source code of linux/include/linux/intel_tpmi.h