arch/x86/include/asm/intel_telemetry.h

   1 /*
   2  * Intel SOC Telemetry Driver Header File
   3  * Copyright (C) 2015, Intel Corporation.
   4  * All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  */
  16 #ifndef INTEL_TELEMETRY_H
  17 #define INTEL_TELEMETRY_H
  18
  19 #define TELEM_MAX_EVENTS_SRAM           28
  20 #define TELEM_MAX_OS_ALLOCATED_EVENTS   20
  21
  22 enum telemetry_unit {
  23         TELEM_PSS = 0,
  24         TELEM_IOSS,
  25         TELEM_UNIT_NONE
  26 };
  27
  28 struct telemetry_evtlog {
  29         u32 telem_evtid;
  30         u64 telem_evtlog;
  31 };
  32
  33 struct telemetry_evtconfig {
  34         /* Array of Event-IDs to Enable */
  35         u32 *evtmap;
  36
  37         /* Number of Events (<29) in evtmap */
  38         u8 num_evts;
  39
  40         /* Sampling period */
  41         u8 period;
  42 };
  43
  44 struct telemetry_evtmap {
  45         const char *name;
  46         u32 evt_id;
  47 };
  48
  49 struct telemetry_unit_config {
  50         struct telemetry_evtmap *telem_evts;
  51         void __iomem *regmap;
  52         u32 ssram_base_addr;
  53         u8 ssram_evts_used;
  54         u8 curr_period;
  55         u8 max_period;
  56         u8 min_period;
  57         u32 ssram_size;
  58
  59 };
  60
  61 struct telemetry_plt_config {
  62         struct telemetry_unit_config pss_config;
  63         struct telemetry_unit_config ioss_config;
  64         struct mutex telem_trace_lock;
  65         struct mutex telem_lock;
  66         bool telem_in_use;
  67 };
  68
  69 struct telemetry_core_ops {
  70         int (*get_sampling_period)(u8 *pss_min_period, u8 *pss_max_period,
  71                                    u8 *ioss_min_period, u8 *ioss_max_period);
  72
  73         int (*get_eventconfig)(struct telemetry_evtconfig *pss_evtconfig,
  74                                struct telemetry_evtconfig *ioss_evtconfig,
  75                                int pss_len, int ioss_len);
  76
  77         int (*update_events)(struct telemetry_evtconfig pss_evtconfig,
  78                              struct telemetry_evtconfig ioss_evtconfig);
  79
  80         int (*set_sampling_period)(u8 pss_period, u8 ioss_period);
  81
  82         int (*get_trace_verbosity)(enum telemetry_unit telem_unit,
  83                                    u32 *verbosity);
  84
  85         int (*set_trace_verbosity)(enum telemetry_unit telem_unit,
  86                                    u32 verbosity);
  87
  88         int (*raw_read_eventlog)(enum telemetry_unit telem_unit,
  89                                  struct telemetry_evtlog *evtlog,
  90                                  int len, int log_all_evts);
  91
  92         int (*read_eventlog)(enum telemetry_unit telem_unit,
  93                              struct telemetry_evtlog *evtlog,
  94                              int len, int log_all_evts);
  95
  96         int (*add_events)(u8 num_pss_evts, u8 num_ioss_evts,
  97                           u32 *pss_evtmap, u32 *ioss_evtmap);
  98
  99         int (*reset_events)(void);
 100 };
 101
 102 int telemetry_set_pltdata(struct telemetry_core_ops *ops,
 103                           struct telemetry_plt_config *pltconfig);
 104
 105 int telemetry_clear_pltdata(void);
 106
 107 int telemetry_pltconfig_valid(void);
 108
 109 int telemetry_get_evtname(enum telemetry_unit telem_unit,
 110                           const char **name, int len);
 111
 112 int telemetry_update_events(struct telemetry_evtconfig pss_evtconfig,
 113                             struct telemetry_evtconfig ioss_evtconfig);
 114
 115 int telemetry_add_events(u8 num_pss_evts, u8 num_ioss_evts,
 116                          u32 *pss_evtmap, u32 *ioss_evtmap);
 117
 118 int telemetry_reset_events(void);
 119
 120 int telemetry_get_eventconfig(struct telemetry_evtconfig *pss_config,
 121                               struct telemetry_evtconfig *ioss_config,
 122                               int pss_len, int ioss_len);
 123
 124 int telemetry_read_events(enum telemetry_unit telem_unit,
 125                           struct telemetry_evtlog *evtlog, int len);
 126
 127 int telemetry_raw_read_events(enum telemetry_unit telem_unit,
 128                               struct telemetry_evtlog *evtlog, int len);
 129
 130 int telemetry_read_eventlog(enum telemetry_unit telem_unit,
 131                             struct telemetry_evtlog *evtlog, int len);
 132
 133 int telemetry_raw_read_eventlog(enum telemetry_unit telem_unit,
 134                                 struct telemetry_evtlog *evtlog, int len);
 135
 136 int telemetry_get_sampling_period(u8 *pss_min_period, u8 *pss_max_period,
 137                                   u8 *ioss_min_period, u8 *ioss_max_period);
 138
 139 int telemetry_set_sampling_period(u8 pss_period, u8 ioss_period);
 140
 141 int telemetry_set_trace_verbosity(enum telemetry_unit telem_unit,
 142                                   u32 verbosity);
 143
 144 int telemetry_get_trace_verbosity(enum telemetry_unit telem_unit,
 145                                   u32 *verbosity);
 146
 147 #endif /* INTEL_TELEMETRY_H */