1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (c) 2020 Dmitry Kozlyuk 3 */ 4 5 #ifndef _EAL_WINDOWS_H_ 6 #define _EAL_WINDOWS_H_ 7 8 /** 9 * @file Facilities private to Windows EAL 10 */ 11 12 #include <rte_errno.h> 13 #include <rte_windows.h> 14 15 /** 16 * Log current function as not implemented and set rte_errno. 17 */ 18 #define EAL_LOG_NOT_IMPLEMENTED() \ 19 do { \ 20 RTE_LOG(DEBUG, EAL, "%s() is not implemented\n", __func__); \ 21 rte_errno = ENOTSUP; \ 22 } while (0) 23 24 /** 25 * Log current function as a stub. 26 */ 27 #define EAL_LOG_STUB() \ 28 RTE_LOG(DEBUG, EAL, "Windows: %s() is a stub\n", __func__) 29 30 /** 31 * Create a map of processors and cores on the system. 32 * 33 * @return 34 * 0 on success, (-1) on failure and rte_errno is set. 35 */ 36 int eal_create_cpu_map(void); 37 38 /** 39 * Create a thread. 40 * 41 * @param thread 42 * The location to store the thread id if successful. 43 * @return 44 * 0 for success, -1 if the thread is not created. 45 */ 46 int eal_thread_create(pthread_t *thread); 47 48 /** 49 * Get system NUMA node number for a socket ID. 50 * 51 * @param socket_id 52 * Valid EAL socket ID. 53 * @return 54 * NUMA node number to use with Win32 API. 55 */ 56 unsigned int eal_socket_numa_node(unsigned int socket_id); 57 58 /** 59 * Schedule code for execution in the interrupt thread. 60 * 61 * @param func 62 * Function to call. 63 * @param arg 64 * Argument to the called function. 65 * @return 66 * 0 on success, netagive error code on failure. 67 */ 68 int eal_intr_thread_schedule(void (*func)(void *arg), void *arg); 69 70 /** 71 * Open virt2phys driver interface device. 72 * 73 * @return 0 on success, (-1) on failure. 74 */ 75 int eal_mem_virt2iova_init(void); 76 77 /** 78 * Locate Win32 memory management routines in system libraries. 79 * 80 * @return 0 on success, (-1) on failure. 81 */ 82 int eal_mem_win32api_init(void); 83 84 /** 85 * Allocate new memory in hugepages on the specified NUMA node. 86 * 87 * @param size 88 * Number of bytes to allocate. Must be a multiple of huge page size. 89 * @param socket_id 90 * Socket ID. 91 * @return 92 * Address of the memory allocated on success or NULL on failure. 93 */ 94 void *eal_mem_alloc_socket(size_t size, int socket_id); 95 96 /** 97 * Commit memory previously reserved with eal_mem_reserve() 98 * or decommitted from hugepages by eal_mem_decommit(). 99 * 100 * @param requested_addr 101 * Address within a reserved region. Must not be NULL. 102 * @param size 103 * Number of bytes to commit. Must be a multiple of page size. 104 * @param socket_id 105 * Socket ID to allocate on. Can be SOCKET_ID_ANY. 106 * @return 107 * On success, address of the committed memory, that is, requested_addr. 108 * On failure, NULL and rte_errno is set. 109 */ 110 void *eal_mem_commit(void *requested_addr, size_t size, int socket_id); 111 112 /** 113 * Put allocated or committed memory back into reserved state. 114 * 115 * @param addr 116 * Address of the region to decommit. 117 * @param size 118 * Number of bytes to decommit, must be the size of a page 119 * (hugepage or regular one). 120 * 121 * The *addr* and *size* must match location and size 122 * of a previously allocated or committed region. 123 * 124 * @return 125 * 0 on success, (-1) on failure. 126 */ 127 int eal_mem_decommit(void *addr, size_t size); 128 129 #endif /* _EAL_WINDOWS_H_ */ 130