4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #ifndef _RTE_EAL_MEMCONFIG_H_
35 #define _RTE_EAL_MEMCONFIG_H_
37 #include <rte_config.h>
38 #include <rte_tailq.h>
39 #include <rte_memory.h>
40 #include <rte_memzone.h>
41 #include <rte_malloc_heap.h>
42 #include <rte_rwlock.h>
43 #include <rte_pause.h>
50 * the structure for the memory configuration for the RTE.
51 * Used by the rte_config structure. It is separated out, as for multi-process
52 * support, the memory details should be shared across instances
54 struct rte_mem_config {
55 volatile uint32_t magic; /**< Magic number - Sanity check. */
58 uint32_t nchannel; /**< Number of channels (0 if unknown). */
59 uint32_t nrank; /**< Number of ranks (0 if unknown). */
62 * current lock nest order
63 * - qlock->mlock (ring/hash/lpm)
64 * - mplock->qlock->mlock (mempool)
66 * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
68 rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
69 rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
70 rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
72 uint32_t memzone_cnt; /**< Number of allocated memzones */
74 /* memory segments and zones */
75 struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
76 struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
78 struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
80 /* Heaps of Malloc per socket */
81 struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
83 /* address of mem_config in primary process. used to map shared config into
84 * exact same address the primary process maps it.
86 uint64_t mem_cfg_addr;
87 } __attribute__((__packed__));
91 rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
93 /* wait until shared mem_config finish initialising */
94 while(mcfg->magic != RTE_MAGIC)
102 #endif /*__RTE_EAL_MEMCONFIG_H_*/