1 files changed, 224 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_eal/bsdapp/eal/eal_memory.c b/src/dpdk_lib18/librte_eal/bsdapp/eal/eal_memory.c
new file mode 100755
index 00000000..65ee87d8
--- /dev/null
+++ b/src/dpdk_lib18/librte_eal/bsdapp/eal/eal_memory.c
@@ -0,0 +1,224 @@
+/*-
+ *   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 <sys/mman.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <inttypes.h>
+#include <fcntl.h>
+
+#include <rte_eal.h>
+#include <rte_eal_memconfig.h>
+#include <rte_log.h>
+#include <rte_string_fns.h>
+#include "eal_private.h"
+#include "eal_internal_cfg.h"
+#include "eal_filesystem.h"
+
+#define PAGE_SIZE (sysconf(_SC_PAGESIZE))
+
+/*
+ * Get physical address of any mapped virtual address in the current process.
+ */
+phys_addr_t
+rte_mem_virt2phy(const void *virtaddr)
+{
+	/* XXX not implemented. This function is only used by
+	 * rte_mempool_virt2phy() when hugepages are disabled. */
+	(void)virtaddr;
+	return RTE_BAD_PHYS_ADDR;
+}
+
+static int
+rte_eal_contigmem_init(void)
+{
+	struct rte_mem_config *mcfg;
+	uint64_t total_mem = 0;
+	void *addr;
+	unsigned i, j, seg_idx = 0;
+
+	/* get pointer to global configuration */
+	mcfg = rte_eal_get_configuration()->mem_config;
+
+	/* for debug purposes, hugetlbfs can be disabled */
+	if (internal_config.no_hugetlbfs) {
+		addr = malloc(internal_config.memory);
+		mcfg->memseg[0].phys_addr = (phys_addr_t)(uintptr_t)addr;
+		mcfg->memseg[0].addr = addr;
+		mcfg->memseg[0].len = internal_config.memory;
+		mcfg->memseg[0].socket_id = 0;
+		return 0;
+	}
+
+	/* map all hugepages and sort them */
+	for (i = 0; i < internal_config.num_hugepage_sizes; i ++){
+		struct hugepage_info *hpi;
+
+		hpi = &internal_config.hugepage_info[i];
+		for (j = 0; j < hpi->num_pages[0]; j++) {
+			struct rte_memseg *seg;
+			uint64_t physaddr;
+			int error;
+			size_t sysctl_size = sizeof(physaddr);
+			char physaddr_str[64];
+
+			addr = mmap(NULL, hpi->hugepage_sz, PROT_READ|PROT_WRITE,
+					MAP_SHARED, hpi->lock_descriptor, j * PAGE_SIZE);
+			if (addr == MAP_FAILED) {
+				RTE_LOG(ERR, EAL, "Failed to mmap buffer %u from %s\n",
+						j, hpi->hugedir);
+				return -1;
+			}
+
+			snprintf(physaddr_str, sizeof(physaddr_str), "hw.contigmem"
+					".physaddr.%d", j);
+			error = sysctlbyname(physaddr_str, &physaddr, &sysctl_size,
+					NULL, 0);
+			if (error < 0) {
+				RTE_LOG(ERR, EAL, "Failed to get physical addr for buffer %u "
+						"from %s\n", j, hpi->hugedir);
+				return -1;
+			}
+
+			seg = &mcfg->memseg[seg_idx++];
+			seg->addr = addr;
+			seg->phys_addr = physaddr;
+			seg->hugepage_sz = hpi->hugepage_sz;
+			seg->len = hpi->hugepage_sz;
+			seg->nchannel = mcfg->nchannel;
+			seg->nrank = mcfg->nrank;
+			seg->socket_id = 0;
+
+			RTE_LOG(INFO, EAL, "Mapped memory segment %u @ %p: physaddr:0x%"
+					PRIx64", len %zu\n",
+					seg_idx, addr, physaddr, hpi->hugepage_sz);
+			if (total_mem >= internal_config.memory ||
+					seg_idx >= RTE_MAX_MEMSEG)
+				break;
+		}
+	}
+	return 0;
+}
+
+static int
+rte_eal_contigmem_attach(void)
+{
+	const struct hugepage_info *hpi;
+	int fd_hugepage_info, fd_hugepage = -1;
+	unsigned i = 0;
+	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+
+	/* Obtain a file descriptor for hugepage_info */
+	fd_hugepage_info = open(eal_hugepage_info_path(), O_RDONLY);
+	if (fd_hugepage_info < 0) {
+		RTE_LOG(ERR, EAL, "Could not open %s\n", eal_hugepage_info_path());
+		return -1;
+	}
+
+	/* Map the shared hugepage_info into the process address spaces */
+	hpi = mmap(NULL, sizeof(struct hugepage_info), PROT_READ, MAP_PRIVATE,
+			fd_hugepage_info, 0);
+	if (hpi == NULL) {
+		RTE_LOG(ERR, EAL, "Could not mmap %s\n", eal_hugepage_info_path());
+		goto error;
+	}
+
+	/* Obtain a file descriptor for contiguous memory */
+	fd_hugepage = open(hpi->hugedir, O_RDWR);
+	if (fd_hugepage < 0) {
+		RTE_LOG(ERR, EAL, "Could not open %s\n", hpi->hugedir);
+		goto error;
+	}
+
+	/* Map the contiguous memory into each memory segment */
+	for (i = 0; i < hpi->num_pages[0]; i++) {
+
+		void *addr;
+		struct rte_memseg *seg = &mcfg->memseg[i];
+
+		addr = mmap(seg->addr, hpi->hugepage_sz, PROT_READ|PROT_WRITE,
+				MAP_SHARED|MAP_FIXED, fd_hugepage, i * PAGE_SIZE);
+		if (addr == MAP_FAILED || addr != seg->addr) {
+			RTE_LOG(ERR, EAL, "Failed to mmap buffer %u from %s\n",
+				i, hpi->hugedir);
+			goto error;
+		}
+
+	}
+
+	/* hugepage_info is no longer required */
+	munmap((void *)(uintptr_t)hpi, sizeof(struct hugepage_info));
+	close(fd_hugepage_info);
+	close(fd_hugepage);
+	return 0;
+
+error:
+	if (fd_hugepage_info >= 0)
+		close(fd_hugepage_info);
+	if (fd_hugepage >= 0)
+		close(fd_hugepage);
+	return -1;
+}
+
+
+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(INFO, EAL, "Setting up physically contiguous memory...\n");
+	const int retval = rte_eal_process_type() == RTE_PROC_PRIMARY ?
+			rte_eal_contigmem_init() :
+			rte_eal_contigmem_attach();
+	if (retval < 0)
+		return -1;
+
+	if (internal_config.no_shconf == 0 && rte_eal_memdevice_init() < 0)
+		return -1;
+
+	return 0;
+}