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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _RTE_EAL_MEMCONFIG_H_
#define _RTE_EAL_MEMCONFIG_H_
#include <rte_config.h>
#include <rte_tailq.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_malloc_heap.h>
#include <rte_rwlock.h>
#include <rte_pause.h>
#include <rte_fbarray.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* memseg list is a special case as we need to store a bunch of other data
* together with the array itself.
*/
struct rte_memseg_list {
RTE_STD_C11
union {
void *base_va;
/**< Base virtual address for this memseg list. */
uint64_t addr_64;
/**< Makes sure addr is always 64-bits */
};
int socket_id; /**< Socket ID for all memsegs in this list. */
uint64_t page_sz; /**< Page size for all memsegs in this list. */
volatile uint32_t version; /**< version number for multiprocess sync. */
struct rte_fbarray memseg_arr;
};
/**
* the structure for the memory configuration for the RTE.
* Used by the rte_config structure. It is separated out, as for multi-process
* support, the memory details should be shared across instances
*/
struct rte_mem_config {
volatile uint32_t magic; /**< Magic number - Sanity check. */
/* memory topology */
uint32_t nchannel; /**< Number of channels (0 if unknown). */
uint32_t nrank; /**< Number of ranks (0 if unknown). */
/**
* current lock nest order
* - qlock->mlock (ring/hash/lpm)
* - mplock->qlock->mlock (mempool)
* Notice:
* *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
*/
rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
rte_rwlock_t memory_hotplug_lock;
/**< indicates whether memory hotplug request is in progress. */
/* memory segments and zones */
struct rte_fbarray memzones; /**< Memzone descriptors. */
struct rte_memseg_list memsegs[RTE_MAX_MEMSEG_LISTS];
/**< list of dynamic arrays holding memsegs */
struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
/* Heaps of Malloc per socket */
struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
/* address of mem_config in primary process. used to map shared config into
* exact same address the primary process maps it.
*/
uint64_t mem_cfg_addr;
} __attribute__((__packed__));
inline static void
rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
{
/* wait until shared mem_config finish initialising */
while(mcfg->magic != RTE_MAGIC)
rte_pause();
}
#ifdef __cplusplus
}
#endif
#endif /*__RTE_EAL_MEMCONFIG_H_*/
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