-/*-
- * 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_MEMORY_H_
#include <stddef.h>
#include <stdio.h>
-#include <rte_config.h>
-
-#ifdef RTE_EXEC_ENV_LINUXAPP
-#include <exec-env/rte_dom0_common.h>
-#endif
-
#ifdef __cplusplus
extern "C" {
#endif
#include <rte_common.h>
+#include <rte_config.h>
__extension__
enum rte_page_sizes {
*/
#define __rte_cache_min_aligned __rte_aligned(RTE_CACHE_LINE_MIN_SIZE)
-typedef uint64_t phys_addr_t; /**< Physical address definition. */
+typedef uint64_t phys_addr_t; /**< Physical address. */
#define RTE_BAD_PHYS_ADDR ((phys_addr_t)-1)
+/**
+ * IO virtual address type.
+ * When the physical addressing mode (IOVA as PA) is in use,
+ * the translation from an IO virtual address (IOVA) to a physical address
+ * is a direct mapping, i.e. the same value.
+ * Otherwise, in virtual mode (IOVA as VA), an IOMMU may do the translation.
+ */
+typedef uint64_t rte_iova_t;
+#define RTE_BAD_IOVA ((rte_iova_t)-1)
/**
* Physical memory segment descriptor.
*/
struct rte_memseg {
- 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. */
int32_t socket_id; /**< NUMA socket ID. */
uint32_t nchannel; /**< Number of channels. */
uint32_t nrank; /**< Number of ranks. */
-#ifdef RTE_LIBRTE_XEN_DOM0
- /**< store segment MFNs */
- uint64_t mfn[DOM0_NUM_MEMBLOCK];
-#endif
} __rte_packed;
/**
* @param virt
* The virtual address.
* @return
- * The physical address or RTE_BAD_PHYS_ADDR on error.
+ * The physical address or RTE_BAD_IOVA on error.
*/
phys_addr_t rte_mem_virt2phy(const void *virt);
+/**
+ * Get IO virtual address of any mapped virtual address in the current process.
+ *
+ * @param virt
+ * The virtual address.
+ * @return
+ * The IO address or RTE_BAD_IOVA on error.
+ */
+rte_iova_t rte_mem_virt2iova(const void *virt);
+
/**
* Get the layout of the available physical memory.
*
*/
unsigned rte_memory_get_nrank(void);
-#ifdef RTE_LIBRTE_XEN_DOM0
-
-/**< Internal use only - should DOM0 memory mapping be used */
-int rte_xen_dom0_supported(void);
-
-/**< Internal use only - phys to virt mapping for xen */
-phys_addr_t rte_xen_mem_phy2mch(int32_t, const phys_addr_t);
-
-/**
- * Return the physical address of elt, which is an element of the pool mp.
- *
- * @param memseg_id
- * Identifier of the memory segment owning the physical address. If
- * set to -1, find it automatically.
- * @param phy_addr
- * physical address of elt.
- *
- * @return
- * The physical address or RTE_BAD_PHYS_ADDR on error.
- */
-static inline phys_addr_t
-rte_mem_phy2mch(int32_t memseg_id, const phys_addr_t phy_addr)
-{
- if (rte_xen_dom0_supported())
- return rte_xen_mem_phy2mch(memseg_id, phy_addr);
- else
- return phy_addr;
-}
-
-/**
- * Memory init for supporting application running on Xen domain0.
- *
- * @param void
- *
- * @return
- * 0: successfully
- * negative: error
- */
-int rte_xen_dom0_memory_init(void);
-
/**
- * Attach to memory setments of primary process on Xen domain0.
- *
- * @param void
+ * Drivers based on uio will not load unless physical
+ * addresses are obtainable. It is only possible to get
+ * physical addresses when running as a privileged user.
*
* @return
- * 0: successfully
- * negative: error
+ * 1 if the system is able to obtain physical addresses.
+ * 0 if using DMA addresses through an IOMMU.
*/
-int rte_xen_dom0_memory_attach(void);
-#else
-static inline int rte_xen_dom0_supported(void)
-{
- return 0;
-}
-
-static inline phys_addr_t
-rte_mem_phy2mch(int32_t memseg_id __rte_unused, const phys_addr_t phy_addr)
-{
- return phy_addr;
-}
-#endif
+int rte_eal_using_phys_addrs(void);
#ifdef __cplusplus
}
Code Review / deb_dpdk.git / blobdiff