intel_telemetry.h

  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 <linux/platform_data/x86/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_trace_verbosity)(enum telemetry_unit telem_unit,
 63				   u32 *verbosity);
 64
 65	int (*set_trace_verbosity)(enum telemetry_unit telem_unit,
 66				   u32 verbosity);
 67
 68	int (*raw_read_eventlog)(enum telemetry_unit telem_unit,
 69				 struct telemetry_evtlog *evtlog,
 70				 int len, int log_all_evts);
 71
 72	int (*read_eventlog)(enum telemetry_unit telem_unit,
 73			     struct telemetry_evtlog *evtlog,
 74			     int len, int log_all_evts);
 75};
 76
 77int telemetry_set_pltdata(const struct telemetry_core_ops *ops,
 78			  struct telemetry_plt_config *pltconfig);
 79
 80int telemetry_clear_pltdata(void);
 81
 82struct telemetry_plt_config *telemetry_get_pltdata(void);
 83
 84int telemetry_get_evtname(enum telemetry_unit telem_unit,
 85			  const char **name, int len);
 86
 87int telemetry_read_events(enum telemetry_unit telem_unit,
 88			  struct telemetry_evtlog *evtlog, int len);
 89
 90int telemetry_read_eventlog(enum telemetry_unit telem_unit,
 91			    struct telemetry_evtlog *evtlog, int len);
 92
 93int telemetry_raw_read_eventlog(enum telemetry_unit telem_unit,
 94				struct telemetry_evtlog *evtlog, int len);
 95
 96int telemetry_set_trace_verbosity(enum telemetry_unit telem_unit,
 97				  u32 verbosity);
 98
 99int telemetry_get_trace_verbosity(enum telemetry_unit telem_unit,
100				  u32 *verbosity);
101
102#endif /* INTEL_TELEMETRY_H */