1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2016-2017 Cavium, Inc 3 */ 4 5 #ifndef _RTE_EVENTDEV_PMD_VDEV_H_ 6 #define _RTE_EVENTDEV_PMD_VDEV_H_ 7 8 /** @file 9 * RTE Eventdev VDEV PMD APIs 10 * 11 * @note 12 * These API are from event VDEV PMD only and user applications should not call 13 * them directly. 14 */ 15 16 #include <string.h> 17 18 #include <rte_config.h> 19 #include <rte_debug.h> 20 #include <rte_eal.h> 21 #include <rte_bus_vdev.h> 22 23 #include "eventdev_pmd.h" 24 25 /** 26 * @internal 27 * Creates a new virtual event device and returns the pointer to that device. 28 * 29 * @param name 30 * PMD type name 31 * @param dev_private_size 32 * Size of event PMDs private data 33 * @param socket_id 34 * Socket to allocate resources on. 35 * 36 * @return 37 * - Eventdev pointer if device is successfully created. 38 * - NULL if device cannot be created. 39 */ 40 static inline struct rte_eventdev * 41 rte_event_pmd_vdev_init(const char *name, size_t dev_private_size, 42 int socket_id) 43 { 44 45 struct rte_eventdev *eventdev; 46 47 /* Allocate device structure */ 48 eventdev = rte_event_pmd_allocate(name, socket_id); 49 if (eventdev == NULL) 50 return NULL; 51 52 /* Allocate private device structure */ 53 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 54 eventdev->data->dev_private = 55 rte_zmalloc_socket("eventdev device private", 56 dev_private_size, 57 RTE_CACHE_LINE_SIZE, 58 socket_id); 59 60 if (eventdev->data->dev_private == NULL) 61 rte_panic("Cannot allocate memzone for private device" 62 " data"); 63 } 64 65 return eventdev; 66 } 67 68 /** 69 * @internal 70 * Destroy the given virtual event device 71 * 72 * @param name 73 * PMD type name 74 * @return 75 * - 0 on success, negative on error 76 */ 77 static inline int 78 rte_event_pmd_vdev_uninit(const char *name) 79 { 80 int ret; 81 struct rte_eventdev *eventdev; 82 83 if (name == NULL) 84 return -EINVAL; 85 86 eventdev = rte_event_pmd_get_named_dev(name); 87 if (eventdev == NULL) 88 return -ENODEV; 89 90 ret = rte_event_dev_close(eventdev->data->dev_id); 91 if (ret < 0) 92 return ret; 93 94 /* Free the event device */ 95 rte_event_pmd_release(eventdev); 96 97 return 0; 98 } 99 100 #endif /* _RTE_EVENTDEV_PMD_VDEV_H_ */ 101