Imported Upstream version 16.04

[deb_dpdk.git] / lib / librte_eal / common / eal_common_memory.c

diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c
new file mode 100644 (file)
index 0000000..6155752
--- /dev/null
+++ b/lib/librte_eal/common/eal_common_memory.c
@@ -0,0 +1,154 @@
+/*-
+ *   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 <stdint.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <sys/queue.h>
+
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_eal_memconfig.h>
+#include <rte_log.h>
+
+#include "eal_private.h"
+#include "eal_internal_cfg.h"
+
+/*
+ * Return a pointer to a read-only table of struct rte_physmem_desc
+ * elements, containing the layout of all addressable physical
+ * memory. The last element of the table contains a NULL address.
+ */
+const struct rte_memseg *
+rte_eal_get_physmem_layout(void)
+{
+       return rte_eal_get_configuration()->mem_config->memseg;
+}
+
+
+/* get the total size of memory */
+uint64_t
+rte_eal_get_physmem_size(void)
+{
+       const struct rte_mem_config *mcfg;
+       unsigned i = 0;
+       uint64_t total_len = 0;
+
+       /* get pointer to global configuration */
+       mcfg = rte_eal_get_configuration()->mem_config;
+
+       for (i = 0; i < RTE_MAX_MEMSEG; i++) {
+               if (mcfg->memseg[i].addr == NULL)
+                       break;
+
+               total_len += mcfg->memseg[i].len;
+       }
+
+       return total_len;
+}
+
+/* Dump the physical memory layout on console */
+void
+rte_dump_physmem_layout(FILE *f)
+{
+       const struct rte_mem_config *mcfg;
+       unsigned i = 0;
+
+       /* get pointer to global configuration */
+       mcfg = rte_eal_get_configuration()->mem_config;
+
+       for (i = 0; i < RTE_MAX_MEMSEG; i++) {
+               if (mcfg->memseg[i].addr == NULL)
+                       break;
+
+               fprintf(f, "Segment %u: phys:0x%"PRIx64", len:%zu, "
+                      "virt:%p, socket_id:%"PRId32", "
+                      "hugepage_sz:%"PRIu64", nchannel:%"PRIx32", "
+                      "nrank:%"PRIx32"\n", i,
+                      mcfg->memseg[i].phys_addr,
+                      mcfg->memseg[i].len,
+                      mcfg->memseg[i].addr,
+                      mcfg->memseg[i].socket_id,
+                      mcfg->memseg[i].hugepage_sz,
+                      mcfg->memseg[i].nchannel,
+                      mcfg->memseg[i].nrank);
+       }
+}
+
+/* return the number of memory channels */
+unsigned rte_memory_get_nchannel(void)
+{
+       return rte_eal_get_configuration()->mem_config->nchannel;
+}
+
+/* return the number of memory rank */
+unsigned rte_memory_get_nrank(void)
+{
+       return rte_eal_get_configuration()->mem_config->nrank;
+}
+
+static int
+rte_eal_memdevice_init(void)
+{
+       struct rte_config *config;
+
+       if (rte_eal_process_type() == RTE_PROC_SECONDARY)
+               return 0;
+
+       config = rte_eal_get_configuration();
+       config->mem_config->nchannel = internal_config.force_nchannel;
+       config->mem_config->nrank = internal_config.force_nrank;
+
+       return 0;
+}
+
+/* init memory subsystem */
+int
+rte_eal_memory_init(void)
+{
+       RTE_LOG(DEBUG, EAL, "Setting up physically contiguous memory...\n");
+
+       const int retval = rte_eal_process_type() == RTE_PROC_PRIMARY ?
+                       rte_eal_hugepage_init() :
+                       rte_eal_hugepage_attach();
+       if (retval < 0)
+               return -1;
+
+       if (internal_config.no_shconf == 0 && rte_eal_memdevice_init() < 0)
+               return -1;
+
+       return 0;
+}