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-rw-r--r--lib/librte_mempool/rte_dom0_mempool.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/lib/librte_mempool/rte_dom0_mempool.c b/lib/librte_mempool/rte_dom0_mempool.c
new file mode 100644
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+++ 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;
+}