include/linux/intel_tpmi.h

   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