projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| f67539c2 TL |
1 | /* SPDX-License-Identifier: BSD-3-Clause |
| 2 | * Copyright(c) 2019 Intel Corporation | |
| 3 | */ | |
| 4 | ||
| 5 | #ifndef EAL_MEMCFG_H | |
| 6 | #define EAL_MEMCFG_H | |
| 7 | ||
| 8 | #include <rte_memory.h> | |
| 9 | #include <rte_memzone.h> | |
| 10 | #include <rte_pause.h> | |
| 11 | #include <rte_spinlock.h> | |
| 12 | #include <rte_rwlock.h> | |
| 13 | #include <rte_tailq.h> | |
| 14 | ||
| 15 | #include "malloc_heap.h" | |
| 16 | ||
| 17 | /** | |
| 18 | * Memory configuration shared across multiple processes. | |
| 19 | */ | |
| 20 | struct rte_mem_config { | |
| 21 | volatile uint32_t magic; /**< Magic number - sanity check. */ | |
| 22 | uint32_t version; | |
| 23 | /**< Prevent secondary processes using different DPDK versions. */ | |
| 24 | ||
| 25 | /* memory topology */ | |
| 26 | uint32_t nchannel; /**< Number of channels (0 if unknown). */ | |
| 27 | uint32_t nrank; /**< Number of ranks (0 if unknown). */ | |
| 28 | ||
| 29 | /** | |
| 30 | * current lock nest order | |
| 31 | * - qlock->mlock (ring/hash/lpm) | |
| 32 | * - mplock->qlock->mlock (mempool) | |
| 33 | * Notice: | |
| 34 | * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock | |
| 35 | */ | |
| 36 | rte_rwlock_t mlock; /**< used by memzones for thread safety. */ | |
| 37 | rte_rwlock_t qlock; /**< used by tailqs for thread safety. */ | |
| 38 | rte_rwlock_t mplock; /**< used by mempool library for thread safety. */ | |
| 39 | rte_spinlock_t tlock; /**< used by timer library for thread safety. */ | |
| 40 | ||
| 41 | rte_rwlock_t memory_hotplug_lock; | |
| 42 | /**< Indicates whether memory hotplug request is in progress. */ | |
| 43 | ||
| 44 | /* memory segments and zones */ | |
| 45 | struct rte_fbarray memzones; /**< Memzone descriptors. */ | |
| 46 | ||
| 47 | struct rte_memseg_list memsegs[RTE_MAX_MEMSEG_LISTS]; | |
| 48 | /**< List of dynamic arrays holding memsegs */ | |
| 49 | ||
| 50 | struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; | |
| 51 | /**< Tailqs for objects */ | |
| 52 | ||
| 53 | struct malloc_heap malloc_heaps[RTE_MAX_HEAPS]; | |
| 54 | /**< DPDK malloc heaps */ | |
| 55 | ||
| 56 | int next_socket_id; /**< Next socket ID for external malloc heap */ | |
| 57 | ||
| 58 | /* rte_mem_config has to be mapped at the exact same address in all | |
| 59 | * processes, so we need to store it. | |
| 60 | */ | |
| 61 | uint64_t mem_cfg_addr; /**< Address of this structure in memory. */ | |
| 62 | ||
| 63 | /* Primary and secondary processes cannot run with different legacy or | |
| 64 | * single file segments options, so to avoid having to specify these | |
| 65 | * options to all processes, store them in shared config and update the | |
| 66 | * internal config at init time. | |
| 67 | */ | |
| 68 | uint32_t legacy_mem; /**< stored legacy mem parameter. */ | |
| 69 | uint32_t single_file_segments; | |
| 70 | /**< stored single file segments parameter. */ | |
| 71 | ||
| 72 | uint64_t tsc_hz; | |
| 73 | /**< TSC rate */ | |
| 74 | ||
| 75 | uint8_t dma_maskbits; /**< Keeps the more restricted dma mask. */ | |
| 76 | }; | |
| 77 | ||
| 78 | /* update internal config from shared mem config */ | |
| 79 | void | |
| 80 | eal_mcfg_update_internal(void); | |
| 81 | ||
| 82 | /* update shared mem config from internal config */ | |
| 83 | void | |
| 84 | eal_mcfg_update_from_internal(void); | |
| 85 | ||
| 86 | /* wait until primary process initialization is complete */ | |
| 87 | void | |
| 88 | eal_mcfg_wait_complete(void); | |
| 89 | ||
| 90 | /* check if DPDK version of current process matches one stored in the config */ | |
| 91 | int | |
| 92 | eal_mcfg_check_version(void); | |
| 93 | ||
| 94 | /* set mem config as complete */ | |
| 95 | void | |
| 96 | eal_mcfg_complete(void); | |
| 97 | ||
| 98 | #endif /* EAL_MEMCFG_H */ |