-/*-
- * 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _RTE_MEMZONE_H_
*/
#include <stdio.h>
+#include <rte_compat.h>
#include <rte_memory.h>
+#include <rte_common.h>
#ifdef __cplusplus
extern "C" {
#define RTE_MEMZONE_512MB 0x00040000 /**< Use 512MB pages. */
#define RTE_MEMZONE_4GB 0x00080000 /**< Use 4GB pages. */
#define RTE_MEMZONE_SIZE_HINT_ONLY 0x00000004 /**< Use available page size */
+#define RTE_MEMZONE_IOVA_CONTIG 0x00100000 /**< Ask for IOVA-contiguous memzone. */
/**
* A structure describing a memzone, which is a contiguous portion of
#define RTE_MEMZONE_NAMESIZE 32 /**< Maximum length of memory zone name.*/
char name[RTE_MEMZONE_NAMESIZE]; /**< Name of the memory zone. */
- phys_addr_t phys_addr; /**< Start physical address. */
+ RTE_STD_C11
+ union {
+ phys_addr_t phys_addr; /**< deprecated - Start physical address. */
+ rte_iova_t iova; /**< Start IO address. */
+ };
+ RTE_STD_C11
union {
void *addr; /**< Start virtual address. */
uint64_t addr_64; /**< Makes sure addr is always 64-bits */
};
-#ifdef RTE_LIBRTE_IVSHMEM
- phys_addr_t ioremap_addr; /**< Real physical address inside the VM */
-#endif
size_t len; /**< Length of the memzone. */
uint64_t hugepage_sz; /**< The page size of underlying memory */
int32_t socket_id; /**< NUMA socket ID. */
uint32_t flags; /**< Characteristics of this memzone. */
- uint32_t memseg_id; /**< Memseg it belongs. */
} __attribute__((__packed__));
/**
*
* This function reserves some memory and returns a pointer to a
* correctly filled memzone descriptor. If the allocation cannot be
- * done, return NULL. Note: A reserved zone cannot be freed.
+ * done, return NULL.
+ *
+ * @note Reserving memzones with len set to 0 will only attempt to allocate
+ * memzones from memory that is already available. It will not trigger any
+ * new allocations.
+ *
+ * @note: When reserving memzones with len set to 0, it is preferable to also
+ * set a valid socket_id. Setting socket_id to SOCKET_ID_ANY is supported, but
+ * will likely not yield expected results. Specifically, the resulting memzone
+ * may not necessarily be the biggest memzone available, but rather biggest
+ * memzone available on socket id corresponding to an lcore from which
+ * reservation was called.
*
* @param name
* The name of the memzone. If it already exists, the function will
* If this flag is not set, the function
* will return error on an unavailable size
* request.
+ * - RTE_MEMZONE_IOVA_CONTIG - Ensure reserved memzone is IOVA-contiguous.
+ * This option should be used when allocating
+ * memory intended for hardware rings etc.
* @return
* A pointer to a correctly-filled read-only memzone descriptor, or NULL
* on error.
* boundary, and returns a pointer to a correctly filled memzone
* descriptor. If the allocation cannot be done or if the alignment
* is not a power of 2, returns NULL.
- * Note: A reserved zone cannot be freed.
+ *
+ * @note Reserving memzones with len set to 0 will only attempt to allocate
+ * memzones from memory that is already available. It will not trigger any
+ * new allocations.
+ *
+ * @note: When reserving memzones with len set to 0, it is preferable to also
+ * set a valid socket_id. Setting socket_id to SOCKET_ID_ANY is supported, but
+ * will likely not yield expected results. Specifically, the resulting memzone
+ * may not necessarily be the biggest memzone available, but rather biggest
+ * memzone available on socket id corresponding to an lcore from which
+ * reservation was called.
*
* @param name
* The name of the memzone. If it already exists, the function will
* If this flag is not set, the function
* will return error on an unavailable size
* request.
+ * - RTE_MEMZONE_IOVA_CONTIG - Ensure reserved memzone is IOVA-contiguous.
+ * This option should be used when allocating
+ * memory intended for hardware rings etc.
* @param align
* Alignment for resulting memzone. Must be a power of 2.
* @return
* Memory buffer is reserved in a way, that it wouldn't cross specified
* boundary. That implies that requested length should be less or equal
* then boundary.
- * Note: A reserved zone cannot be freed.
+ *
+ * @note Reserving memzones with len set to 0 will only attempt to allocate
+ * memzones from memory that is already available. It will not trigger any
+ * new allocations.
+ *
+ * @note: When reserving memzones with len set to 0, it is preferable to also
+ * set a valid socket_id. Setting socket_id to SOCKET_ID_ANY is supported, but
+ * will likely not yield expected results. Specifically, the resulting memzone
+ * may not necessarily be the biggest memzone available, but rather biggest
+ * memzone available on socket id corresponding to an lcore from which
+ * reservation was called.
*
* @param name
* The name of the memzone. If it already exists, the function will
* If this flag is not set, the function
* will return error on an unavailable size
* request.
+ * - RTE_MEMZONE_IOVA_CONTIG - Ensure reserved memzone is IOVA-contiguous.
+ * This option should be used when allocating
+ * memory intended for hardware rings etc.
* @param align
* Alignment for resulting memzone. Must be a power of 2.
* @param bound
/**
* Free a memzone.
*
- * Note: an IVSHMEM zone cannot be freed.
- *
* @param mz
* A pointer to the memzone
* @return
- * -EINVAL - invalid parameter, IVSHMEM memzone.
+ * -EINVAL - invalid parameter.
* 0 - success
*/
int rte_memzone_free(const struct rte_memzone *mz);
const struct rte_memzone *rte_memzone_lookup(const char *name);
/**
- * Dump all reserved memzones to the console.
+ * Dump all reserved memzones to a file.
*
* @param f
* A pointer to a file for output
git.droids-corp.org / dpdk.git / blobdiff