diff options
Diffstat (limited to 'src/dpdk_lib18/librte_mempool/rte_dom0_mempool.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_mempool/rte_dom0_mempool.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_mempool/rte_dom0_mempool.c b/src/dpdk_lib18/librte_mempool/rte_dom0_mempool.c new file mode 100755 index 00000000..9ec68fb3 --- /dev/null +++ b/src/dpdk_lib18/librte_mempool/rte_dom0_mempool.c @@ -0,0 +1,134 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdio.h> +#include <string.h> +#include <stdint.h> +#include <unistd.h> +#include <stdarg.h> +#include <inttypes.h> +#include <errno.h> +#include <sys/queue.h> + +#include <rte_common.h> +#include <rte_log.h> +#include <rte_debug.h> +#include <rte_memory.h> +#include <rte_memzone.h> +#include <rte_atomic.h> +#include <rte_launch.h> +#include <rte_tailq.h> +#include <rte_eal.h> +#include <rte_eal_memconfig.h> +#include <rte_per_lcore.h> +#include <rte_lcore.h> +#include <rte_branch_prediction.h> +#include <rte_ring.h> +#include <rte_errno.h> +#include <rte_string_fns.h> +#include <rte_spinlock.h> + +#include "rte_mempool.h" + +static void +get_phys_map(void *va, phys_addr_t pa[], uint32_t pg_num, + uint32_t pg_sz, uint32_t memseg_id) +{ + uint32_t i; + uint64_t virt_addr, mfn_id; + struct rte_mem_config *mcfg; + uint32_t page_size = getpagesize(); + + /* get pointer to global configuration */ + mcfg = rte_eal_get_configuration()->mem_config; + virt_addr =(uintptr_t) mcfg->memseg[memseg_id].addr; + + for (i = 0; i != pg_num; i++) { + mfn_id = ((uintptr_t)va + i * pg_sz - virt_addr) / RTE_PGSIZE_2M; + pa[i] = mcfg->memseg[memseg_id].mfn[mfn_id] * page_size; + } +} + +/* create the mempool for supporting Dom0 */ +struct rte_mempool * +rte_dom0_mempool_create(const char *name, unsigned elt_num, unsigned elt_size, + unsigned cache_size, unsigned private_data_size, + rte_mempool_ctor_t *mp_init, void *mp_init_arg, + rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg, + int socket_id, unsigned flags) +{ + struct rte_mempool *mp = NULL; + phys_addr_t *pa; + char *va; + size_t sz; + uint32_t pg_num, pg_shift, pg_sz, total_size; + const struct rte_memzone *mz; + char mz_name[RTE_MEMZONE_NAMESIZE]; + int mz_flags = RTE_MEMZONE_1GB|RTE_MEMZONE_SIZE_HINT_ONLY; + + pg_sz = RTE_PGSIZE_2M; + + pg_shift = rte_bsf32(pg_sz); + total_size = rte_mempool_calc_obj_size(elt_size, flags, NULL); + + /* calc max memory size and max number of pages needed. */ + sz = rte_mempool_xmem_size(elt_num, total_size, pg_shift) + + RTE_PGSIZE_2M; + pg_num = sz >> pg_shift; + + /* extract physical mappings of the allocated memory. */ + pa = calloc(pg_num, sizeof (*pa)); + if (pa == NULL) + return mp; + + snprintf(mz_name, sizeof(mz_name), RTE_MEMPOOL_OBJ_NAME, name); + mz = rte_memzone_reserve(mz_name, sz, socket_id, mz_flags); + if (mz == NULL) { + free(pa); + return mp; + } + + va = (char *)RTE_ALIGN_CEIL((uintptr_t)mz->addr, RTE_PGSIZE_2M); + /* extract physical mappings of the allocated memory. */ + get_phys_map(va, pa, pg_num, pg_sz, mz->memseg_id); + + mp = rte_mempool_xmem_create(name, elt_num, elt_size, + cache_size, private_data_size, + mp_init, mp_init_arg, + obj_init, obj_init_arg, + socket_id, flags, va, pa, pg_num, pg_shift); + + free(pa); + + return (mp); +} |