Imported Upstream version 16.04

[deb_dpdk.git] / lib / librte_mempool / rte_dom0_mempool.c

diff --git a/lib/librte_mempool/rte_dom0_mempool.c b/lib/librte_mempool/rte_dom0_mempool.c
new file mode 100644 (file)
index 0000000..0d6d750
--- /dev/null
+++ b/lib/librte_mempool/rte_dom0_mempool.c
@@ -0,0 +1,133 @@
+/*-
+ *   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_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;
+}