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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
#ifndef _EAL_PRIVATE_H_
#define _EAL_PRIVATE_H_
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
/**
* Initialize the memzone subsystem (private to eal).
*
* @return
* - 0 on success
* - Negative on error
*/
int rte_eal_memzone_init(void);
/**
* Common log initialization function (private to eal). Determines
* where log data is written when no call to rte_openlog_stream is
* in effect.
*
* @param default_log
* The default log stream to be used.
* @return
* - 0 on success
* - Negative on error
*/
void eal_log_set_default(FILE *default_log);
/**
* Fill configuration with number of physical and logical processors
*
* This function is private to EAL.
*
* Parse /proc/cpuinfo to get the number of physical and logical
* processors on the machine.
*
* @return
* 0 on success, negative on error
*/
int rte_eal_cpu_init(void);
/**
* Map memory
*
* This function is private to EAL.
*
* Fill configuration structure with these infos, and return 0 on success.
*
* @return
* 0 on success, negative on error
*/
int rte_eal_memory_init(void);
/**
* Configure timers
*
* This function is private to EAL.
*
* Mmap memory areas used by HPET (high precision event timer) that will
* provide our time reference, and configure the TSC frequency also for it
* to be used as a reference.
*
* @return
* 0 on success, negative on error
*/
int rte_eal_timer_init(void);
/**
* Init the default log stream
*
* This function is private to EAL.
*
* @return
* 0 on success, negative on error
*/
int rte_eal_log_init(const char *id, int facility);
/**
* Init tail queues for non-EAL library structures. This is to allow
* the rings, mempools, etc. lists to be shared among multiple processes
*
* This function is private to EAL
*
* @return
* 0 on success, negative on error
*/
int rte_eal_tailqs_init(void);
/**
* Init interrupt handling.
*
* This function is private to EAL.
*
* @return
* 0 on success, negative on error
*/
int rte_eal_intr_init(void);
/**
* Init alarm mechanism. This is to allow a callback be called after
* specific time.
*
* This function is private to EAL.
*
* @return
* 0 on success, negative on error
*/
int rte_eal_alarm_init(void);
/**
* Function is to check if the kernel module(like, vfio, vfio_iommu_type1,
* etc.) loaded.
*
* @param module_name
* The module's name which need to be checked
*
* @return
* -1 means some error happens(NULL pointer or open failure)
* 0 means the module not loaded
* 1 means the module loaded
*/
int rte_eal_check_module(const char *module_name);
/**
* Get cpu core_id.
*
* This function is private to the EAL.
*/
unsigned eal_cpu_core_id(unsigned lcore_id);
/**
* Check if cpu is present.
*
* This function is private to the EAL.
*/
int eal_cpu_detected(unsigned lcore_id);
/**
* Set TSC frequency from precise value or estimation
*
* This function is private to the EAL.
*/
void set_tsc_freq(void);
/**
* Get precise TSC frequency from system
*
* This function is private to the EAL.
*/
uint64_t get_tsc_freq(void);
/**
* Get TSC frequency if the architecture supports.
*
* This function is private to the EAL.
*
* @return
* The number of TSC cycles in one second.
* Returns zero if the architecture support is not available.
*/
uint64_t get_tsc_freq_arch(void);
/**
* Prepare physical memory mapping
* i.e. hugepages on Linux and
* contigmem on BSD.
*
* This function is private to the EAL.
*/
int rte_eal_hugepage_init(void);
/**
* Creates memory mapping in secondary process
* i.e. hugepages on Linux and
* contigmem on BSD.
*
* This function is private to the EAL.
*/
int rte_eal_hugepage_attach(void);
/**
* Find a bus capable of identifying a device.
*
* @param str
* A device identifier (PCI address, virtual PMD name, ...).
*
* @return
* A valid bus handle if found.
* NULL if no bus is able to parse this device.
*/
struct rte_bus *rte_bus_find_by_device_name(const char *str);
/**
* Create the unix channel for primary/secondary communication.
*
* @return
* 0 on success;
* (<0) on failure.
*/
int rte_mp_channel_init(void);
#endif /* _EAL_PRIVATE_H_ */
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