rocm-systems/include/rdc/rdc.h

/*
Copyright (c) 2020 - present Advanced Micro Devices, Inc. All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy
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*/

#ifndef INCLUDE_RDC_RDC_H_
#define INCLUDE_RDC_RDC_H_

#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus

#ifdef __cplusplus

// cstddef include causes issues on older GCC
// use stddef.h instead
#if __GNUC__ < 9
#include <stddef.h>
#else
#include <cstddef>
#endif  // __GNUC__

#include <cstdint>
#else
#include <stddef.h>
#include <stdint.h>
#endif  // __cplusplus

/** \file rdc.h
 *  Main header file for the ROCm RDC library.
 *  All required function, structure, enum, etc. definitions should be defined
 *  in this file.
 *
 *  @brief The rocm_rdc library api is new, and therefore subject to change
 *  either at the ABI or API level. Instead of marking every function prototype
 *  as "unstable", we are instead saying the API is unstable (i.e., changes
 *  are possible) while the major version remains 0. This means that if the
 *  API/ABI changes, we will not increment the major version to 1. Once the
 *  ABI stabilizes, we will increment the major version to 1, and thereafter
 *  increment it on all ABI breaks.
 */

/**
 * @brief Error codes returned by rocm_rdc_lib functions
 */
typedef enum {
  RDC_ST_OK = 0,            //!< Success
  RDC_ST_NOT_SUPPORTED,     //!< Not supported feature
  RDC_ST_MSI_ERROR,         //!< The MSI library error
  RDC_ST_FAIL_LOAD_MODULE,  //!< Fail to load the library
  RDC_ST_INVALID_HANDLER,   //!< Invalid handler
  RDC_ST_BAD_PARAMETER,     //!< A parameter is invalid
  RDC_ST_NOT_FOUND,         //!< Cannot find the value
  RDC_ST_CONFLICT,          //!< Conflict with current state
  RDC_ST_CLIENT_ERROR,      //!< The RDC client error
  RDC_ST_ALREADY_EXIST,     //!< The item already exists
  RDC_ST_MAX_LIMIT,         //!< Max limit recording for the object
  RDC_ST_INSUFF_RESOURCES,  //!< Not enough resources to complete
                            //!<  operation
  RDC_ST_FILE_ERROR,        //!< Failed to access a file
  RDC_ST_NO_DATA,           //!< Data was requested,
                            //!<   but none was found
  RDC_ST_PERM_ERROR,        //!< Insufficient permission to complete
                            //!<   operation
  RDC_ST_DISABLED_MODULE,   //!< Attempted loading disabled module

  RDC_ST_UNKNOWN_ERROR = 0xFFFFFFFF  //!< Unknown error
} rdc_status_t;

/**
 * @brief rdc operation mode
 * rdc can run in auto mode where background threads will collect metrics.
 * When run in manual mode, the user needs to periodically call
 * rdc_field_update_all for data collection.
 */
typedef enum { RDC_OPERATION_MODE_AUTO = 0, RDC_OPERATION_MODE_MANUAL } rdc_operation_mode_t;

/**
 * @brief type of GPU group
 */
typedef enum {
  RDC_GROUP_DEFAULT = 0,  //!< All GPUs on the Node
  RDC_GROUP_EMPTY         //!< Empty group
} rdc_group_type_t;

/**
 * @brief the type stored in the filed value
 */
typedef enum { INTEGER = 0, DOUBLE, STRING, BLOB } rdc_field_type_t;

//! ID used to represent an invalid GPU
#define GPU_ID_INVALID (-1)
//! Used to specify all GPUs
#define RDC_GROUP_ALL_GPUS (-1000)
//! Used to specify all stats fields
#define RDC_JOB_STATS_FIELDS (-1000)

/**
 * @brief The max rdc field string length
 */
#define RDC_MAX_STR_LENGTH 256

/**
 * @brief The max entities in a group
 */
#define RDC_GROUP_MAX_ENTITIES 64

/**
 * @brief Max number of GPUs supported by RDC
 */
#define RDC_MAX_NUM_DEVICES 128

/**
 * @brief The max fields in a field group
 */
#define RDC_MAX_FIELD_IDS_PER_FIELD_GROUP 128

/**
 * @brief The max number of groups
 */
#define RDC_MAX_NUM_GROUPS 64

/**
 * @brief The max number of the field groups
 */
#define RDC_MAX_NUM_FIELD_GROUPS 64

/**
 * @brief The max string length occupied by version information
 */
#define RDC_MAX_VERSION_STR_LENGTH 60

/**
 * These enums are used to specify a particular field to be retrieved.
 */
typedef enum {
  RDC_FI_INVALID = 0,  //!< Invalid field value
  //!< @brief Identifier fields
  RDC_FI_GPU_COUNT = 1,  //!< GPU count in the system
  RDC_FI_DEV_NAME,       //!< Name of the device
  RDC_FI_OAM_ID,         //!< OAM ID of the device

  /**
   * @brief Frequency related fields
   */
  RDC_FI_GPU_CLOCK = 100,  //!< The current clock for the GPU
  RDC_FI_MEM_CLOCK,        //!< Clock for the memory

  /*
   * @brief Physical monitor fields
   */
  RDC_FI_MEMORY_TEMP = 200,  //!< Memory temperature for the device
  RDC_FI_GPU_TEMP,           //!< Current temperature for the device
  RDC_FI_POWER_USAGE = 300,  //!< Power usage for the device

  /**
   * @brief PCIe related fields
   */
  RDC_FI_PCIE_TX = 400,  //!< PCIe Tx utilization information
  RDC_FI_PCIE_RX,        //!< PCIe Rx utilization information
  // RDC_FI_PCIE_TX, RDC_FI_PCIE_RX are not supported on new ASIC
  // The RDC_FI_PCIE_BANDWIDTH should be used
  RDC_FI_PCIE_BANDWIDTH,  //!< PCIe bandwidth in GB/sec

  /**
   * @brief GPU usage related fields
   */
  RDC_FI_GPU_UTIL = 500,    //!< GPU Utilization
  RDC_FI_GPU_MEMORY_USAGE,  //!< Memory usage of the GPU instance
  RDC_FI_GPU_MEMORY_TOTAL,  //!< Total memory of the GPU instance
  RDC_FI_GPU_MM_ENC_UTIL,  //!< Multimedia encoder busy percentage
  RDC_FI_GPU_MM_DEC_UTIL,  //!< Multimedia decoder busy percentage
  RDC_FI_GPU_MEMORY_ACTIVITY,  //!< Memory busy percentage

  /**
   * @brief GPU page related fields
   */
  RDC_FI_GPU_PAGE_RETRIED = 550,  //!< Retried page of the GPU instance
  /**
   * @brief ECC related fields
   */
  RDC_FI_ECC_CORRECT_TOTAL = 600,  //!< Accumulated correctable ECC errors
  RDC_FI_ECC_UNCORRECT_TOTAL,      //!< Accumulated uncorrectable ECC errors

  RDC_FI_ECC_FIRST = 602,  //!< FIRST Error Correction and Detection field
  RDC_FI_ECC_SDMA_CE = RDC_FI_ECC_FIRST,
  RDC_FI_ECC_SDMA_UE,
  RDC_FI_ECC_GFX_CE,
  RDC_FI_ECC_GFX_UE,
  RDC_FI_ECC_MMHUB_CE,
  RDC_FI_ECC_MMHUB_UE,
  RDC_FI_ECC_ATHUB_CE,
  RDC_FI_ECC_ATHUB_UE,
  RDC_FI_ECC_PCIE_BIF_CE,
  RDC_FI_ECC_PCIE_BIF_UE,
  RDC_FI_ECC_HDP_CE,
  RDC_FI_ECC_HDP_UE,
  RDC_FI_ECC_XGMI_WAFL_CE,
  RDC_FI_ECC_XGMI_WAFL_UE,
  RDC_FI_ECC_DF_CE,
  RDC_FI_ECC_DF_UE,
  RDC_FI_ECC_SMN_CE,
  RDC_FI_ECC_SMN_UE,
  RDC_FI_ECC_SEM_CE,
  RDC_FI_ECC_SEM_UE,
  RDC_FI_ECC_MP0_CE,
  RDC_FI_ECC_MP0_UE,
  RDC_FI_ECC_MP1_CE,
  RDC_FI_ECC_MP1_UE,
  RDC_FI_ECC_FUSE_CE,
  RDC_FI_ECC_FUSE_UE,
  RDC_FI_ECC_UMC_CE,
  RDC_FI_ECC_UMC_UE,
  RDC_FI_ECC_MCA_CE,
  RDC_FI_ECC_MCA_UE,
  RDC_FI_ECC_VCN_CE,
  RDC_FI_ECC_VCN_UE,
  RDC_FI_ECC_JPEG_CE,
  RDC_FI_ECC_JPEG_UE,
  RDC_FI_ECC_IH_CE,
  RDC_FI_ECC_IH_UE,
  RDC_FI_ECC_MPIO_CE,
  RDC_FI_ECC_MPIO_UE,
  RDC_FI_ECC_LAST = RDC_FI_ECC_MPIO_UE,

  // In new ASCI, such as MI300, the XGMI events is not supported
  // Using below XGMI related fields to calculate the bandwidth.
  RDC_FI_XGMI_0_READ_KB = 700,  //!< XGMI_0 accumulated data read size (KB)
  RDC_FI_XGMI_1_READ_KB,        //!< XGMI_1 accumulated data read size (KB)
  RDC_FI_XGMI_2_READ_KB,        //!< XGMI_2 accumulated data read size (KB)
  RDC_FI_XGMI_3_READ_KB,        //!< XGMI_3 accumulated data read size (KB)
  RDC_FI_XGMI_4_READ_KB,        //!< XGMI_4 accumulated data read size (KB)
  RDC_FI_XGMI_5_READ_KB,        //!< XGMI_5 accumulated data read size (KB)
  RDC_FI_XGMI_6_READ_KB,        //!< XGMI_6 accumulated data read size (KB)
  RDC_FI_XGMI_7_READ_KB,        //!< XGMI_7 accumulated data read size (KB)

  RDC_FI_XGMI_0_WRITE_KB,  //!< XGMI_0 accumulated data write size (KB)
  RDC_FI_XGMI_1_WRITE_KB,  //!< XGMI_1 accumulated data write size (KB)
  RDC_FI_XGMI_2_WRITE_KB,  //!< XGMI_2 accumulated data write size (KB)
  RDC_FI_XGMI_3_WRITE_KB,  //!< XGMI_3 accumulated data write size (KB)
  RDC_FI_XGMI_4_WRITE_KB,  //!< XGMI_4 accumulated data write size (KB)
  RDC_FI_XGMI_5_WRITE_KB,  //!< XGMI_5 accumulated data write size (KB)
  RDC_FI_XGMI_6_WRITE_KB,  //!< XGMI_6 accumulated data write size (KB)
  RDC_FI_XGMI_7_WRITE_KB,  //!< XGMI_7 accumulated data write size (KB)
  RDC_FI_XGMI_TOTAL_READ_KB,      //!< XGMI_SUM accumulated data read size (KB)
  RDC_FI_XGMI_TOTAL_WRITE_KB,      //!< XGMI_SUM accumulated data write size (KB)

  /**
   * @brief ROC-profiler related fields
   */
  RDC_FI_PROF_OCCUPANCY_PERCENT = 800,
  RDC_FI_PROF_ACTIVE_CYCLES,
  RDC_FI_PROF_ACTIVE_WAVES,
  RDC_FI_PROF_ELAPSED_CYCLES,
  RDC_FI_PROF_TENSOR_ACTIVE_PERCENT,
  RDC_FI_PROF_GPU_UTIL_PERCENT,
  // metrics below are divided by time passed
  RDC_FI_PROF_EVAL_MEM_R_BW,
  RDC_FI_PROF_EVAL_MEM_W_BW,
  RDC_FI_PROF_EVAL_FLOPS_16,
  RDC_FI_PROF_EVAL_FLOPS_32,
  RDC_FI_PROF_EVAL_FLOPS_64,

  /**
   * @brief Raw XGMI counter events
   */
  RDC_EVNT_XGMI_0_NOP_TX = 1000,  //!< NOPs sent to neighbor 0
  RDC_EVNT_XGMI_0_REQ_TX,         //!< Outgoing requests to
                                  //!< neighbor 0
  RDC_EVNT_XGMI_0_RESP_TX,        //!< Outgoing responses to
                                  //!< neighbor 0
  /**
   * @brief
   *
   * Data beats sent to neighbor 0; Each beat represents 32 bytes.<br><br>
   *
   * XGMI throughput can be calculated by multiplying a BEATs event
   * such as ::RDC_EVNT_XGMI_0_BEATS_TX by 32 and dividing by
   * the time for which event collection occurred,
   * ::rdc_gpu_usage_info_t.start_time (which is in nanoseconds). To get
   * bytes per second, multiply this value by 10<sup>9</sup>.<br>
   * <br>
   * Throughput = BEATS/time_running * 10<sup>9</sup>  (bytes/second)<br>
   */
  //  ie, Throughput = BEATS/time_running 10^9  bytes/sec
  RDC_EVNT_XGMI_0_BEATS_TX,
  RDC_EVNT_XGMI_1_NOP_TX,    //!< NOPs sent to neighbor 1
  RDC_EVNT_XGMI_1_REQ_TX,    //!< Outgoing requests to
                             //!< neighbor 1
  RDC_EVNT_XGMI_1_RESP_TX,   //!< Outgoing responses to
                             //!< neighbor 1
  RDC_EVNT_XGMI_1_BEATS_TX,  //!< Data beats sent to
                             //!< neighbor 1; Each beat
                             //!< represents 32 bytes

  // "Composite" events. These events have additional processing beyond
  // the value provided by the amd_smi library.
  RDC_EVNT_XGMI_0_THRPUT = 1500,  //!< Transmit throughput to XGMI
                                  //!< neighbor 0 in byes/sec
  RDC_EVNT_XGMI_1_THRPUT,         //!< Transmit throughput to XGMI
                                  //!< neighbor 1 in byes/sec
  RDC_EVNT_XGMI_2_THRPUT,         //!< Transmit throughput to XGMI
                                  //!< neighbor 2 in byes/sec
  RDC_EVNT_XGMI_3_THRPUT,         //!< Transmit throughput to XGMI
                                  //!< neighbor 3 in byes/sec
  RDC_EVNT_XGMI_4_THRPUT,         //!< Transmit throughput to XGMI
                                  //!< neighbor 4 in byes/sec
  RDC_EVNT_XGMI_5_THRPUT,         //!< Transmit throughput to XGMI
                                  //!< neighbor 5 in byes/sec

  RDC_EVNT_NOTIF_VMFAULT = 2000,  //!< VM page fault
  RDC_EVNT_NOTIF_FIRST = RDC_EVNT_NOTIF_VMFAULT,

  RDC_EVNT_NOTIF_THERMAL_THROTTLE,  //!< Clock frequency has decreased
                                    //!< due to temperature rise
  RDC_EVNT_NOTIF_PRE_RESET,         //!< GPU reset is about to occur
  RDC_EVNT_NOTIF_POST_RESET,        //!< GPU reset just occurred
  RDC_EVNT_NOTIF_RING_HANG,         //!< GPU ring hang just occurred

  RDC_EVNT_NOTIF_LAST = RDC_EVNT_NOTIF_RING_HANG,
} rdc_field_t;

// even and odd numbers are used for correctable and uncorrectable errors
static_assert(RDC_FI_ECC_SDMA_CE % 2 == 0, "Correctable Error enum is not even");
static_assert(RDC_FI_ECC_SDMA_UE % 2 == 1, "Uncorrectable Error enum is not odd");
static_assert(RDC_FI_ECC_MPIO_CE % 2 == 0, "Correctable Error enum is not even");
static_assert(RDC_FI_ECC_MPIO_UE % 2 == 1, "Uncorrectable Error enum is not odd");

#define RDC_EVNT_IS_NOTIF_FIELD(FIELD) \
  ((FIELD) >= RDC_EVNT_NOTIF_FIRST && (FIELD) <= RDC_EVNT_NOTIF_LAST)
/**
 * @brief handlers used in various rdc calls
 */
typedef void* rdc_handle_t;        //!< Handle used for an RDC session
typedef uint32_t rdc_gpu_group_t;  //!< GPU Group ID type
typedef uint32_t rdc_field_grp_t;  //!< Field group ID type

/**
 * @brief Represents attributes corresponding to a device
 */
typedef struct {
  char device_name[RDC_MAX_STR_LENGTH];  //!< Name of the device.
} rdc_device_attributes_t;

/**
 * @brief Store version information for each component
 */
typedef struct {
  char version[RDC_MAX_VERSION_STR_LENGTH];
} rdc_component_version_t;

/**
 * @brief The structure to store the group info
 */
typedef struct {
  unsigned int count;                   //!< count of GPUs in the group
  char group_name[RDC_MAX_STR_LENGTH];  //!< group name
  /**
   * The list of entities in the group
   */
  uint32_t entity_ids[RDC_GROUP_MAX_ENTITIES];
} rdc_group_info_t;

/**
 * @brief The structure to store summary of data
 */
typedef struct {
  uint64_t max_value;         //!< Maximum value measured
  uint64_t min_value;         //!< Minimum value measured
  uint64_t average;           //!< Average value measured
  double standard_deviation;  //!< The standard deviation
} rdc_stats_summary_t;

/**
 * @brief The structure to hold the GPU usage information
 */
typedef struct {
  uint32_t gpu_id;      //!< GPU_ID_INVALID for summary information
  uint64_t start_time;  //!< The time to start the watching
  uint64_t end_time;    //!< The time to stop the watching

  uint64_t energy_consumed;             //!< GPU Energy consumed
  uint64_t ecc_correct;                 //!< Correctable errors
  uint64_t ecc_uncorrect;               //!< Uncorrectable errors
  rdc_stats_summary_t pcie_tx;          //!< Bytes sent over PCIe stats
  rdc_stats_summary_t pcie_rx;          //!< Bytes received over PCIe stats
  rdc_stats_summary_t power_usage;      //!< GPU Power usage stats
  rdc_stats_summary_t gpu_clock;        //!< GPU Clock speed stats
  rdc_stats_summary_t memory_clock;     //!< Mem. Clock speed stats
  rdc_stats_summary_t gpu_utilization;  //!< GPU Utilization stats
  rdc_stats_summary_t gpu_temperature;  //!< GPU temperature stats

  uint64_t max_gpu_memory_used;            //!< Maximum GPU memory used
  rdc_stats_summary_t memory_utilization;  //!< Memory Utilization statistics
} rdc_gpu_usage_info_t;                    //!< GPU usage statistics

/**
 * @brief The structure to hold the job stats
 */
typedef struct {
  uint32_t num_gpus;              //!< Number of GPUs used by job
  rdc_gpu_usage_info_t summary;   //!< Job usage summary statistics
                                  //!< (overall)
  rdc_gpu_usage_info_t gpus[16];  //!< Job usage summary statistics by GPU
} rdc_job_info_t;

/**
 * @brief Field value data
 */
typedef union {
  int64_t l_int;
  double dbl;
  char str[RDC_MAX_STR_LENGTH];
} rdc_field_value_data;

/**
 * @brief The structure to store the field value
 */
typedef struct {
  rdc_field_t field_id;        //!< The field id of the value
  int status;                  //!< RDC_ST_OK or error status
  uint64_t ts;                 //!< Timestamp in usec since 1970
  rdc_field_type_t type;       //!< The field type
  rdc_field_value_data value;  //!< Value of the field. Value type
                               //!< depends on the field type.
} rdc_field_value;

/**
 * @brief The structure to store the field group info
 */
typedef struct {
  uint32_t count;                       //!< count of fields in the group
  char group_name[RDC_MAX_STR_LENGTH];  //!< field group name
  /**
   * The list of fields in the group
   */
  rdc_field_t field_ids[RDC_MAX_FIELD_IDS_PER_FIELD_GROUP];
} rdc_field_group_info_t;

/**
 * @brief The structure to store the job info
 */
typedef struct {
  char job_id[RDC_MAX_STR_LENGTH];  //!< job id
  rdc_gpu_group_t group_id;         //!< group name
  uint64_t start_time;              //!< job start time
  uint64_t stop_time;               //!< job stop time
} rdc_job_group_info_t;

/**
 * @brief type of diagnostic level
 */
typedef enum {
  RDC_DIAG_LVL_INVALID = 0,  //!< invalid level
  RDC_DIAG_LVL_SHORT,        //!< take a few seconds to run
  RDC_DIAG_LVL_MED,          //!< take less than 2 minutes to run
  RDC_DIAG_LVL_LONG          //!< take up to 15 minutes to run
} rdc_diag_level_t;

/**
 * @brief type of diagnostic result
 */
typedef enum {
  RDC_DIAG_RESULT_PASS,  //!< The diagnostic test pass
  RDC_DIAG_RESULT_SKIP,  //!< The diagnostic test skipped
  RDC_DIAG_RESULT_WARN,  //!< The diagnostic test has warnings
  RDC_DIAG_RESULT_FAIL   //!< The diagnostic test fail
} rdc_diag_result_t;

/**
 * @brief The test cases to run
 */
typedef enum {
  RDC_DIAG_TEST_FIRST = 0,
  //!< The diagnostic test pass
  RDC_DIAG_COMPUTE_PROCESS = RDC_DIAG_TEST_FIRST,
  RDC_DIAG_COMPUTE_QUEUE,   //!< The Compute Queue is ready
  RDC_DIAG_SYS_MEM_CHECK,   //!< Check System memory
  RDC_DIAG_NODE_TOPOLOGY,   //!< Report node topology
  RDC_DIAG_RVS_TEST,        //!< TODO: Replace with real RVS tests
  RDC_DIAG_GPU_PARAMETERS,  //!< GPU parameters in range
  RDC_DIAG_TEST_LAST = RDC_DIAG_GPU_PARAMETERS
} rdc_diag_test_cases_t;

/**
 * @brief Type of Components
 */
typedef enum {
  RDC_AMDMSI_COMPONENT
  //If needed later, add them one by one
} rdc_component_t;

/**
 * @brief The maximum test cases to run
 */
#define MAX_TEST_CASES (RDC_DIAG_TEST_LAST - RDC_DIAG_TEST_FIRST + 1)

/**
 * @brief The maximum length of the diagnostic messages
 */
#define MAX_DIAG_MSG_LENGTH 4096

/**
 * @brief details of the diagnostic errors
 */
typedef struct {
  char msg[MAX_DIAG_MSG_LENGTH];  //!< The test result details
  uint32_t code;                  //!< The low level error code
} rdc_diag_detail_t;

/**
 * @brief details of the per gpu diagnostic results
 */
typedef struct {
  uint32_t gpu_index;            //!< The GPU index
  rdc_diag_detail_t gpu_result;  //!< The detail results
} rdc_diag_per_gpu_result_t;

/**
 * @brief The diagnostic results for all GPUs
 */
typedef struct {
  rdc_diag_result_t status;         //!< The diagnostic result
  rdc_diag_detail_t details;        //!< The summary details
  rdc_diag_test_cases_t test_case;  //!< The test case to run

  uint32_t per_gpu_result_count;  //!< How many gpu_results
  //!< Result details
  rdc_diag_per_gpu_result_t gpu_results[RDC_MAX_NUM_DEVICES];

  char info[MAX_DIAG_MSG_LENGTH];  //!< Detail information
} rdc_diag_test_result_t;

/**
 * @brief The diagnostic responses for test cases
 */
typedef struct {
  uint32_t results_count;
  rdc_diag_test_result_t diag_info[MAX_TEST_CASES];
} rdc_diag_response_t;

/**
 * @brief The policy type to support
 */
typedef enum {
  RDC_POLICY_COND_MAX_PAGE_RETRIED,  //!< Max number of page retired
  RDC_POLICY_COND_THERMAL,           //!< Temperature threshold, millidegree Celsius
  RDC_POLICY_COND_POWER,             //!< Power threshold, unit milliwatt
  RDC_POLICY_COND_MAX
} rdc_policy_condition_type_t;

typedef struct {
  rdc_policy_condition_type_t type;
  int64_t value;
} rdc_policy_condition_t;

typedef enum { RDC_POLICY_ACTION_NONE, RDC_POLICY_ACTION_GPU_RESET } rdc_policy_action_t;

/**
 * @brief The structure to define policy to enforce on GPU.
 */
typedef struct {
  rdc_policy_condition_t condition;  //!< condition to meet
  rdc_policy_action_t action; //!< Action to take
} rdc_policy_t;

/**
 *  @brief Initialize ROCm RDC.
 *
 *  @details When called, this initializes internal data structures,
 *  including those corresponding to sources of information that RDC provides.
 *  This must be called before rdc_start_embedded() or rdc_connect()
 *
 *  @param[in] init_flags init_flags Bit flags that tell RDC how to initialize.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_init(uint64_t init_flags);

/**
 *  @brief Shutdown ROCm RDC.
 *
 *  @details Do any necessary clean up.
 */
rdc_status_t rdc_shutdown();

/**
 *  @brief Start embedded RDC agent within this process.
 *
 *  @details The RDC is loaded as library so that it does not require rdcd
 *  daemon. In this mode, the user has to periodically call
 *  rdc_field_update_all() when op_mode is RDC_OPERATION_MODE_MANUAL, which
 *  tells RDC to collect the stats.
 *
 *  @param[in] op_mode Operation modes. When RDC_OPERATION_MODE_AUTO, RDC
 * schedules background task to collect the stats. When
 * RDC_OPERATION_MODE_MANUAL, the user needs to call rdc_field_update_all()
 * periodically.
 *
 *  @param[inout] p_rdc_handle Caller provided pointer to rdc_handle_t. Upon
 *  successful call, the value will contain the handler for following API calls.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_start_embedded(rdc_operation_mode_t op_mode, rdc_handle_t* p_rdc_handle);

/**
 *  @brief Stop embedded RDC agent.
 *
 *  @details Stop the embedded RDC agent, and p_rdc_handle becomes
 *  invalid after this call.
 *
 *  @param[in] p_rdc_handle The RDC handler that come from
 *  rdc_start_embedded().
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_stop_embedded(rdc_handle_t p_rdc_handle);

/**
 *  @brief Connect to rdcd daemon
 *
 *  @details This method is used to connect to a remote stand-alone
 *  rdcd daemon.
 *
 *  @param[in] ipAndPort The IP and port of the remote rdcd. The ipAndPort
 *  can be specified in this x.x.x.x:yyyy format, where x.x.x.x is the
 *  IP address and yyyy is the port.
 *
 *  @param[inout] p_rdc_handle Caller provided pointer to rdc_handle_t. Upon
 *  successful call, the value will contain the handler
 *  for following API calls.
 *
 *  @param [in] root_ca The root CA stored in the string in pem format. Set it
 *  as nullptr if the communication is not encrypted.
 *
 *  @param [in] client_cert The client certificate stored in the string in pem
 *  format. Set it as nullptr if the communication is not encrypted.
 *
 *  @param [in] client_key The client key stored in the string in pem format.
 *  Set it as nullptr if the communication is not encrypted.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_connect(const char* ipAndPort, rdc_handle_t* p_rdc_handle, const char* root_ca,
                         const char* client_cert, const char* client_key);

/**
 *  @brief Disconnect from rdcd daemon.
 *
 *  @details Disconnect from rdcd daemon, and p_rdc_handle becomes invalid
 *  after this call.
 *
 *  @param[in] p_rdc_handle The RDC handler that come from rdc_connect().
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_disconnect(rdc_handle_t p_rdc_handle);

/**
 *  @brief Request the RDC to watch the job stats
 *
 *  @details This should be executed as part of job prologue. The summary
 *  job stats can be retrieved using rdc_job_get_stats().
 *  In RDC_OPERATION_MODE_MANUAL, user must call rdc_field_update_all(1)
 *  at least once, before call rdc_job_get_stats()
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The group of GPUs to be watched.
 *
 *  @param[in] job_id The name of the job.
 *
 *  @param[in] update_freq  How often to update this field in usec.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_job_start_stats(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                                 const char job_id[64], uint64_t update_freq);

/**
 *  @brief Get the stats of the job using the job id.
 *
 *  @details The stats can be retrieved at any point when the job is in
 *  process.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] job_id The name of the job.
 *
 *  @param[inout] p_job_info Caller provided pointer to rdc_job_info_t. Upon
 *  successful call, the value will contain the stats of the job.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_job_get_stats(rdc_handle_t p_rdc_handle, const char job_id[64],
                               rdc_job_info_t* p_job_info);

/**
 *  @brief Request RDC to stop watching the stats of the job
 *
 *  @details This should be execute as part of job epilogue. The job Id
 *  remains available to view the stats at any point. You must call
 *  rdc_watch_job_fields() before this call.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] job_id The name of the job.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_job_stop_stats(rdc_handle_t p_rdc_handle, const char job_id[64]);

/**
 *  @brief Request RDC to stop tracking the job given by job_id
 *
 *  @details After this call, you will no longer be able to call
 *  rdc_job_get_stats() on this job_id. But you will be able to reuse
 *  the job_id after this call.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] job_id The name of the job.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_job_remove(rdc_handle_t p_rdc_handle, const char job_id[64]);

/**
 *  @brief Request RDC to stop tracking all the jobs
 *
 *  @details After this call, you will no longer be able to call
 *  rdc_job_get_stats() on any job id. But you will be able to reuse
 *  the any previous used job id after this call.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_job_remove_all(rdc_handle_t p_rdc_handle);

/**
 *  @brief Request RDC to update all fields to be watched.
 *
 *  @details In RDC_OPERATION_MODE_MANUAL, the user must call this method
 *  periodically.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] wait_for_update Whether or not to wait for the update loop to
 *  complete before returning to the caller 1=wait. 0=do not wait.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_field_update_all(rdc_handle_t p_rdc_handle, uint32_t wait_for_update);

/**
 *  @brief Get indexes corresponding to all the devices on the system.
 *
 *  @details Indexes represents RDC GPU Id corresponding to each GPU on the
 * system and is immutable during the lifespan of the engine. The list
 * should be queried again if the engine is restarted.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[out] gpu_index_list Array reference to fill GPU indexes present on
 *  the system.
 *
 *  @param[out] count Number of GPUs returned in gpu_index_list.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_device_get_all(rdc_handle_t p_rdc_handle,
                                uint32_t gpu_index_list[RDC_MAX_NUM_DEVICES], uint32_t* count);

/**
 *  @brief Gets device attributes corresponding to the gpu_index.
 *
 *  @details Fetch the attributes, such as device name, of a GPU.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] gpu_index GPU index corresponding to which the attributes
 *  should be fetched
 *
 *  @param[out] p_rdc_attr GPU attribute corresponding to the gpu_index.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_device_get_attributes(rdc_handle_t p_rdc_handle, uint32_t gpu_index,
                                       rdc_device_attributes_t* p_rdc_attr);

/**
 *  @brief Get version information of components used by rdc.
 *
 *  @details Given a component type, return its version information.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] component Type of Components. See rdc_component_t definition for details.
 *
 *  @param[out] p_rdc_compv Version information of the corresponding component.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_device_get_component_version(rdc_handle_t p_rdc_handle, rdc_component_t component, rdc_component_version_t* p_rdc_compv);

/**
 *  @brief Create a group contains multiple GPUs
 *
 *  @details This method can create a group contains multiple GPUs. Instead of
 *  executing an operation separately for each GPU, the RDC group enables
 *  the user to execute same operation on all the GPUs present in the group as
 *  a single API call.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] type The type of the group. RDC_GROUP_DEFAULT includes all the
 *  GPUs on the node, and RDC_GROUP_EMPTY creates an empty group.
 *
 *  @param[in] group_name The group name specified as NULL terminated C String
 *
 *  @param[inout] p_rdc_group_id Caller provided pointer to rdc_gpu_group_t.
 *  Upon successful call, the value will contain the group id for following
 *  group API calls.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_gpu_create(rdc_handle_t p_rdc_handle, rdc_group_type_t type,
                                  const char* group_name, rdc_gpu_group_t* p_rdc_group_id);

/**
 *  @brief Add a GPU to the group
 *
 *  @details This method can add a GPU to the group
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The group id to which the GPU will be added.
 *
 *  @param[in] gpu_index The GPU index to be added to the group.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_gpu_add(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                               uint32_t gpu_index);

/**
 *  @brief Get information about a GPU group
 *
 *  @details Get detail information about a GPU group created by
 *  rdc_group_gpu_create
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] p_rdc_group_id The GPU group handler created by
 *  rdc_group_gpu_create
 *
 *  @param[out] p_rdc_group_info The information of the GPU
 *  group p_rdc_group_id.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_gpu_get_info(rdc_handle_t p_rdc_handle, rdc_gpu_group_t p_rdc_group_id,
                                    rdc_group_info_t* p_rdc_group_info);

/**
 *  @brief Used to get information about all GPU groups in the system.
 *
 *  @details Get the list of GPU group ids in the system.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[out] group_id_list Array reference to fill GPU group
 *  ids in the system.
 *
 *  @param[out] count Number of GPU group returned in group_id_list.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_get_all_ids(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id_list[],
                                   uint32_t* count);

/**
 *  @brief Destroy GPU group represented by p_rdc_group_id
 *
 *  @details Delete the logic group represented by p_rdc_group_id
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] p_rdc_group_id The group id
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_gpu_destroy(rdc_handle_t p_rdc_handle, rdc_gpu_group_t p_rdc_group_id);

/**
 *  @brief create a group of fields
 *
 *  @details The user can create a group of fields and perform an operation
 *  on a group of fields at once.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] num_field_ids Number of field IDs that are being provided
 *  in field_ids.
 *
 *  @param[in] field_ids Field IDs to be added to the newly-created
 *  field group.
 *
 *  @param[in] field_group_name Unique name for this group of fields.
 *
 *  @param[out] rdc_field_group_id Handle to the newly-created field group
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_field_create(rdc_handle_t p_rdc_handle, uint32_t num_field_ids,
                                    rdc_field_t* field_ids, const char* field_group_name,
                                    rdc_field_grp_t* rdc_field_group_id);

/**
 *  @brief Get information about a field group
 *
 *  @details Get detail information about a field group created by
 *  rdc_group_field_create
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] rdc_field_group_id The field group handler created by
 *  rdc_group_field_create
 *
 *  @param[out] field_group_info The information of the field group
 *  rdc_field_group_id.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_field_get_info(rdc_handle_t p_rdc_handle, rdc_field_grp_t rdc_field_group_id,
                                      rdc_field_group_info_t* field_group_info);

/**
 *  @brief Used to get information about all field groups in the system.
 *
 *  @details Get the list of field group ids in the system.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[out] field_group_id_list Array reference to fill field group
 *  ids in the system.
 *
 *  @param[out] count Number of field group returned in field_group_id_list.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_field_get_all_ids(rdc_handle_t p_rdc_handle,
                                         rdc_field_grp_t field_group_id_list[], uint32_t* count);

/**
 *  @brief Destroy field group represented by rdc_field_group_id
 *
 *  @details Delete the logic group represented by rdc_field_group_id
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] rdc_field_group_id The field group id
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_group_field_destroy(rdc_handle_t p_rdc_handle, rdc_field_grp_t rdc_field_group_id);

/**
 *  @brief Request the RDC start recording updates for a given field
 *  collection.
 *
 *  @details Note that the first update of the field will not occur
 *  until the next field update cycle. To force a field update cycle,
 *  user must call rdc_field_update_all(1)
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The group of GPUs to be watched.
 *
 *  @param[in] field_group_id  The collection of fields to record
 *
 *  @param[in] update_freq  How often to update fields in usec.
 *
 *  @param[in] max_keep_age How long to keep data for fields in seconds.
 *
 *  @param[in] max_keep_samples Maximum number of samples to keep. 0=no limit.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_field_watch(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                             rdc_field_grp_t field_group_id, uint64_t update_freq,
                             double max_keep_age, uint32_t max_keep_samples);

/**
 *  @brief Request a latest cached field of a GPU
 *
 *  @details Note that the field can be cached after called rdc_field_watch
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] gpu_index The GPU index.
 *
 *  @param[in] field  The field id
 *
 *  @param[out] value  The field value got from cache.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_field_get_latest_value(rdc_handle_t p_rdc_handle, uint32_t gpu_index,
                                        rdc_field_t field, rdc_field_value* value);

/**
 *  @brief Request a history cached field of a GPU
 *
 *  @details Note that the field can be cached after called rdc_field_watch
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] gpu_index The GPU index.
 *
 *  @param[in] field  The field id
 *
 *  @param[in] since_time_stamp  Timestamp to request values since in
 *  usec since 1970.
 *
 *  @param[out] next_since_time_stamp Timestamp to use for sinceTimestamp
 *  on next call to this function
 *
 *  @param[out] value  The field value got from cache.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_field_get_value_since(rdc_handle_t p_rdc_handle, uint32_t gpu_index,
                                       rdc_field_t field, uint64_t since_time_stamp,
                                       uint64_t* next_since_time_stamp, rdc_field_value* value);

/**
 *  @brief Stop record updates for a given field collection.
 *
 *  @details The cache of those fields will not be updated after this call
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id.
 *
 *  @param[in] field_group_id  The field group id.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_field_unwatch(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                               rdc_field_grp_t field_group_id);

/**
 *  @brief Run the diagnostic test cases
 *
 *  @details Run the diagnostic test cases at different levels.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id.
 *
 *  @param[in] level  The level decides how long the test will run.
 *  The RDC_DIAG_LVL_SHORT only take a few seconds, and the
 *  the RDC_DIAG_LVL_LONG may take up to 15 minutes.
 *
 *  @param[in] config  Implementation specific configuration.
 *
 *  @param[in] config_size  Length of the configuration.
 *
 *  @param[inout] response  The detail results of the tests run.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_diagnostic_run(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                                rdc_diag_level_t level, const char* config, size_t config_size,
                                rdc_diag_response_t* response);

/**
 *  @brief Run one diagnostic test case
 *
 *  @details Run a specific diagnostic test case.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id.
 *
 *  @param[in] test_case  The test case to run.
 *
 *  @param[in] config  Implementation specific configuration.
 *
 *  @param[in] config_size  Length of the configuration.
 *
 *  @param[inout] result  The results of the test.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_test_case_run(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                               rdc_diag_test_cases_t test_case, const char* config,
                               size_t config_size, rdc_diag_test_result_t* result);

/**
 *  @brief Get a description of a provided RDC error status
 *
 *  @details return the string in human readable format.
 *
 *  @param[in] status The RDC status.
 *
 *  @retval The string to describe the RDC status.
 */
const char* rdc_status_string(rdc_status_t status);

/**
 *  @brief Get the name of a field
 *
 *  @details return the string in human readable format.
 *
 *  @param[in] field_id The field id.
 *
 *  @retval The string to describe the field.
 */
const char* field_id_string(rdc_field_t field_id);

/**
 *  @brief Get the field id from name
 *
 *  @details return the field id from field name.
 *
 *  @param[in] name The field name.
 *
 *  @retval return RDC_FI_INVALID if the field name is invalid.
 */
rdc_field_t get_field_id_from_name(const char* name);

/**
 *  @brief Get a description of a diagnostic result.
 *
 *  @details return the string in human readable format.
 *
 *  @param[in] result The RDC diagnostic result.
 *
 *  @retval The string to describe the RDC diagnostic result.
 */
const char* rdc_diagnostic_result_string(rdc_diag_result_t result);

/**
 *  @brief Set the RDC policy. Each group has multiple policies, these policies can be set by this
 * API one by one. Multiple calls of this API will override the existing policy.
 *
 *  @details Set the RDC policy
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id.
 *
 *  @param[in] policy  The policy to set
 *
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_policy_set(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                            rdc_policy_t policy);

#define RDC_MAX_POLICY_SETTINGS 32

/**
 *  @brief Get the RDC policy
 *
 *  @details Get the RDC policy
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id.
 *
 *  @param[out] count The size of policies array
 *
 *  @param[out] policies  The policies to get
 *
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_policy_get(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id, uint32_t* count,
                            rdc_policy_t policies[RDC_MAX_POLICY_SETTINGS]);

/**
 *  @brief delete the RDC policy for this group based on condition type
 *
 *  @details clear the RDC policy for this group based on condition type. In a GPU group, only one
 * policy can be set for a specific rdc_policy_condition_type_t
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id
 *
 *  @param[in] condition_type The condition type to delete
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */

rdc_status_t rdc_policy_delete(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                               rdc_policy_condition_type_t condition_type);

/**
 * Define the structure is used in RDC policy callback
 */
typedef struct {
  unsigned int version;
  rdc_policy_condition_t condition;  //!< the condition that is meet
  rdc_gpu_group_t group_id;          //!< The group id trigger this callback
  int64_t value;          //!< The current value that meet the condition
} rdc_policy_callback_response_t;

/**
 * The user data is the rdc_policy_callback_response_t
 */
typedef int (*rdc_policy_register_callback)(rdc_policy_callback_response_t* userData);

/**
 *  @brief Register a function to be called when policy condition is meet.
 *
 *  @details Register the RDC policy callback
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id.
 *
 *  @param[in] callback  The callback function to be called when condition meet.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_policy_register(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id,
                                 rdc_policy_register_callback callback);

/**
 *  @brief un-register a policy callback function for a conditioin.
 *
 *  @details Un-register the policy callback for a condition.
 *
 *  @param[in] p_rdc_handle The RDC handler.
 *
 *  @param[in] group_id The GPU group id.
 *
 *  @retval ::RDC_ST_OK is returned upon successful call.
 */
rdc_status_t rdc_policy_unregister(rdc_handle_t p_rdc_handle, rdc_gpu_group_t group_id);

#ifdef __cplusplus
}
#endif  // __cplusplus

#endif  // INCLUDE_RDC_RDC_H_