/* SPDX-License-Identifier: BSD-3-Clause * Copyright(c) 2010-2018 Intel Corporation */ #ifndef _EAL_PRIVATE_H_ #define _EAL_PRIVATE_H_ #include #include #include #include /** * 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); /** * Create memseg lists * * This function is private to EAL. * * Preallocate virtual memory. * * @return * 0 on success, negative on error */ int rte_eal_memseg_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); /** * Save the log regexp for later */ int rte_log_save_regexp(const char *type, int priority); int rte_log_save_pattern(const char *pattern, int priority); /** * 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 virtual area of specified size from the OS. * * This function is private to the EAL. * * @param requested_addr * Address where to request address space. * @param size * Size of requested area. * @param page_sz * Page size on which to align requested virtual area. * @param flags * EAL_VIRTUAL_AREA_* flags. * @param mmap_flags * Extra flags passed directly to mmap(). * * @return * Virtual area address if successful. * NULL if unsuccessful. */ #define EAL_VIRTUAL_AREA_ADDR_IS_HINT (1 << 0) /**< don't fail if cannot get exact requested address. */ #define EAL_VIRTUAL_AREA_ALLOW_SHRINK (1 << 1) /**< try getting smaller sized (decrement by page size) virtual areas if cannot * get area of requested size. */ #define EAL_VIRTUAL_AREA_UNMAP (1 << 2) /**< immediately unmap reserved virtual area. */ void * eal_get_virtual_area(void *requested_addr, size_t *size, size_t page_sz, int flags, int mmap_flags); /** * 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); /** * @internal * Parse a device string and store its information in an * rte_devargs structure. * * A device description is split by layers of abstraction of the device: * bus, class and driver. Each layer will offer a set of properties that * can be applied either to configure or recognize a device. * * This function will parse those properties and prepare the rte_devargs * to be given to each layers for processing. * * Note: if the "data" field of the devargs points to devstr, * then no dynamic allocation is performed and the rte_devargs * can be safely discarded. * * Otherwise ``data`` will hold a workable copy of devstr, that will be * used by layers descriptors within rte_devargs. In this case, * any rte_devargs should be cleaned-up before being freed. * * @param da * rte_devargs structure to fill. * * @param devstr * Device string. * * @return * 0 on success. * Negative errno values on error (rte_errno is set). */ int rte_devargs_layers_parse(struct rte_devargs *devargs, const char *devstr); /* * probe a device at local process. * * @param devargs * Device arguments including bus, class and driver properties. * @param new_dev * new device be probed as output. * @return * 0 on success, negative on error. */ int local_dev_probe(const char *devargs, struct rte_device **new_dev); /** * Hotplug remove a given device from a specific bus at local process. * * @param dev * Data structure of the device to remove. * @return * 0 on success, negative on error. */ int local_dev_remove(struct rte_device *dev); /** * Iterate over all buses to find the corresponding bus to handle the sigbus * error. * @param failure_addr * Pointer of the fault address of the sigbus error. * * @return * 0 success to handle the sigbus. * -1 failed to handle the sigbus * 1 no bus can handler the sigbus */ int rte_bus_sigbus_handler(const void *failure_addr); /** * @internal * Register the sigbus handler. * * @return * - On success, zero. * - On failure, a negative value. */ int dev_sigbus_handler_register(void); /** * @internal * Unregister the sigbus handler. * * @return * - On success, zero. * - On failure, a negative value. */ int dev_sigbus_handler_unregister(void); /** * Check if the option is registered. * * @param option * The option to be parsed. * * @return * 0 on success * @return * -1 on fail */ int rte_option_parse(const char *opt); /** * Iterate through the registered options and execute the associated * callback if enabled. */ void rte_option_init(void); #endif /* _EAL_PRIVATE_H_ */