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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Intel SOC Telemetry Driver Header File
4 * Copyright (C) 2015, Intel Corporation.
5 * All Rights Reserved.
6 */
7#ifndef INTEL_TELEMETRY_H
8#define INTEL_TELEMETRY_H
9
10#define TELEM_MAX_EVENTS_SRAM 28
11#define TELEM_MAX_OS_ALLOCATED_EVENTS 20
12
13#include <asm/intel_scu_ipc.h>
14
15enum telemetry_unit {
16 TELEM_PSS = 0,
17 TELEM_IOSS,
18 TELEM_UNIT_NONE
19};
20
21struct telemetry_evtlog {
22 u32 telem_evtid;
23 u64 telem_evtlog;
24};
25
26struct telemetry_evtconfig {
27 /* Array of Event-IDs to Enable */
28 u32 *evtmap;
29
30 /* Number of Events (<29) in evtmap */
31 u8 num_evts;
32
33 /* Sampling period */
34 u8 period;
35};
36
37struct telemetry_evtmap {
38 const char *name;
39 u32 evt_id;
40};
41
42struct telemetry_unit_config {
43 struct telemetry_evtmap *telem_evts;
44 void __iomem *regmap;
45 u8 ssram_evts_used;
46 u8 curr_period;
47 u8 max_period;
48 u8 min_period;
49};
50
51struct telemetry_plt_config {
52 struct telemetry_unit_config pss_config;
53 struct telemetry_unit_config ioss_config;
54 struct mutex telem_trace_lock;
55 struct mutex telem_lock;
56 struct intel_pmc_dev *pmc;
57 struct intel_scu_ipc_dev *scu;
58 bool telem_in_use;
59};
60
61struct telemetry_core_ops {
62 int (*get_sampling_period)(u8 *pss_min_period, u8 *pss_max_period,
63 u8 *ioss_min_period, u8 *ioss_max_period);
64
65 int (*get_eventconfig)(struct telemetry_evtconfig *pss_evtconfig,
66 struct telemetry_evtconfig *ioss_evtconfig,
67 int pss_len, int ioss_len);
68
69 int (*update_events)(struct telemetry_evtconfig pss_evtconfig,
70 struct telemetry_evtconfig ioss_evtconfig);
71
72 int (*set_sampling_period)(u8 pss_period, u8 ioss_period);
73
74 int (*get_trace_verbosity)(enum telemetry_unit telem_unit,
75 u32 *verbosity);
76
77 int (*set_trace_verbosity)(enum telemetry_unit telem_unit,
78 u32 verbosity);
79
80 int (*raw_read_eventlog)(enum telemetry_unit telem_unit,
81 struct telemetry_evtlog *evtlog,
82 int len, int log_all_evts);
83
84 int (*read_eventlog)(enum telemetry_unit telem_unit,
85 struct telemetry_evtlog *evtlog,
86 int len, int log_all_evts);
87
88 int (*add_events)(u8 num_pss_evts, u8 num_ioss_evts,
89 u32 *pss_evtmap, u32 *ioss_evtmap);
90
91 int (*reset_events)(void);
92};
93
94int telemetry_set_pltdata(const struct telemetry_core_ops *ops,
95 struct telemetry_plt_config *pltconfig);
96
97int telemetry_clear_pltdata(void);
98
99struct telemetry_plt_config *telemetry_get_pltdata(void);
100
101int telemetry_get_evtname(enum telemetry_unit telem_unit,
102 const char **name, int len);
103
104int telemetry_update_events(struct telemetry_evtconfig pss_evtconfig,
105 struct telemetry_evtconfig ioss_evtconfig);
106
107int telemetry_add_events(u8 num_pss_evts, u8 num_ioss_evts,
108 u32 *pss_evtmap, u32 *ioss_evtmap);
109
110int telemetry_reset_events(void);
111
112int telemetry_get_eventconfig(struct telemetry_evtconfig *pss_config,
113 struct telemetry_evtconfig *ioss_config,
114 int pss_len, int ioss_len);
115
116int telemetry_read_events(enum telemetry_unit telem_unit,
117 struct telemetry_evtlog *evtlog, int len);
118
119int telemetry_raw_read_events(enum telemetry_unit telem_unit,
120 struct telemetry_evtlog *evtlog, int len);
121
122int telemetry_read_eventlog(enum telemetry_unit telem_unit,
123 struct telemetry_evtlog *evtlog, int len);
124
125int telemetry_raw_read_eventlog(enum telemetry_unit telem_unit,
126 struct telemetry_evtlog *evtlog, int len);
127
128int telemetry_get_sampling_period(u8 *pss_min_period, u8 *pss_max_period,
129 u8 *ioss_min_period, u8 *ioss_max_period);
130
131int telemetry_set_sampling_period(u8 pss_period, u8 ioss_period);
132
133int telemetry_set_trace_verbosity(enum telemetry_unit telem_unit,
134 u32 verbosity);
135
136int telemetry_get_trace_verbosity(enum telemetry_unit telem_unit,
137 u32 *verbosity);
138
139#endif /* INTEL_TELEMETRY_H */
140

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source code of linux/arch/x86/include/asm/intel_telemetry.h