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 */
19 enum 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_ID_PLR = 0xc, /* Performance Limit Reasons */
25 TPMI_CONTROL_ID = 0x80, /* Special ID for getting feature status */
26 TPMI_INFO_ID = 0x81, /* Special ID for PCI BDF and Package ID information */
27 };
28
29 /**
30 * struct intel_tpmi_plat_info - Platform information for a TPMI device instance
31 * @cdie_mask: Mask of all compute dies in the partition
32 * @package_id: CPU Package id
33 * @partition: Package partition id when multiple VSEC PCI devices per package
34 * @segment: PCI segment ID
35 * @bus_number: PCI bus number
36 * @device_number: PCI device number
37 * @function_number: PCI function number
38 *
39 * Structure to store platform data for a TPMI device instance. This
40 * struct is used to return data via tpmi_get_platform_data().
41 */
42 struct intel_tpmi_plat_info {
43 u16 cdie_mask;
44 u8 package_id;
45 u8 partition;
46 u8 segment;
47 u8 bus_number;
48 u8 device_number;
49 u8 function_number;
50 };
51
52 struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *auxdev);
53 struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index);
54 int tpmi_get_resource_count(struct auxiliary_device *auxdev);
55 int tpmi_get_feature_status(struct auxiliary_device *auxdev, int feature_id, bool *read_blocked,
56 bool *write_blocked);
57 struct dentry *tpmi_get_debugfs_dir(struct auxiliary_device *auxdev);
58 #endif
59
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