LXR dpdk/lib/eventdev/eventdev_pmd

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright(c) 2016-2017 Cavium, Inc
   3 */
   4
   5#ifndef _RTE_EVENTDEV_PMD_PCI_H_
   6#define _RTE_EVENTDEV_PMD_PCI_H_
   7
   8#ifdef __cplusplus
   9extern "C" {
  10#endif
  11
  12/** @file
  13 * RTE Eventdev PCI PMD APIs
  14 *
  15 * @note
  16 * These API are from event PCI PMD only and user applications should not call
  17 * them directly.
  18 */
  19
  20#include <string.h>
  21
  22#include <rte_config.h>
  23#include <rte_eal.h>
  24#include <rte_lcore.h>
  25#include <rte_pci.h>
  26#include <rte_bus_pci.h>
  27
  28#include "eventdev_pmd.h"
  29
  30typedef int (*eventdev_pmd_pci_callback_t)(struct rte_eventdev *dev);
  31
  32/**
  33 * @internal
  34 * Wrapper for use by pci drivers as a .probe function to attach to an event
  35 * interface.  Same as rte_event_pmd_pci_probe, except caller can specify
  36 * the name.
  37 */
  38__rte_internal
  39static inline int
  40rte_event_pmd_pci_probe_named(struct rte_pci_driver *pci_drv,
  41                              struct rte_pci_device *pci_dev,
  42                              size_t private_data_size,
  43                              eventdev_pmd_pci_callback_t devinit,
  44                              const char *name)
  45{
  46        struct rte_eventdev *eventdev;
  47        int retval;
  48
  49        if (devinit == NULL)
  50                return -EINVAL;
  51
  52        eventdev = rte_event_pmd_allocate(name,
  53                         pci_dev->device.numa_node);
  54        if (eventdev == NULL)
  55                return -ENOMEM;
  56
  57        if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
  58                eventdev->data->dev_private =
  59                                rte_zmalloc_socket(
  60                                                "eventdev private structure",
  61                                                private_data_size,
  62                                                RTE_CACHE_LINE_SIZE,
  63                                                rte_socket_id());
  64
  65                if (eventdev->data->dev_private == NULL)
  66                        rte_panic("Cannot allocate memzone for private "
  67                                        "device data");
  68        }
  69
  70        eventdev->dev = &pci_dev->device;
  71
  72        /* Invoke PMD device initialization function */
  73        retval = devinit(eventdev);
  74        if (retval == 0) {
  75                event_dev_probing_finish(eventdev);
  76                return 0;
  77        }
  78
  79        RTE_EDEV_LOG_ERR("driver %s: (vendor_id=0x%x device_id=0x%x)"
  80                        " failed", pci_drv->driver.name,
  81                        (unsigned int) pci_dev->id.vendor_id,
  82                        (unsigned int) pci_dev->id.device_id);
  83
  84        rte_event_pmd_release(eventdev);
  85
  86        return -ENXIO;
  87}
  88
  89/**
  90 * @internal
  91 * Wrapper for use by pci drivers as a .probe function to attach to a event
  92 * interface.
  93 */
  94__rte_internal
  95static inline int
  96rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
  97                            struct rte_pci_device *pci_dev,
  98                            size_t private_data_size,
  99                            eventdev_pmd_pci_callback_t devinit)
 100{
 101        char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
 102
 103        rte_pci_device_name(&pci_dev->addr, eventdev_name,
 104                        sizeof(eventdev_name));
 105
 106        return rte_event_pmd_pci_probe_named(pci_drv,
 107                                             pci_dev,
 108                                             private_data_size,
 109                                             devinit,
 110                                             eventdev_name);
 111}
 112
 113/**
 114 * @internal
 115 * Wrapper for use by pci drivers as a .remove function to detach a event
 116 * interface.
 117 */
 118__rte_internal
 119static inline int
 120rte_event_pmd_pci_remove(struct rte_pci_device *pci_dev,
 121                             eventdev_pmd_pci_callback_t devuninit)
 122{
 123        struct rte_eventdev *eventdev;
 124        char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
 125        int ret = 0;
 126
 127        if (pci_dev == NULL)
 128                return -EINVAL;
 129
 130        rte_pci_device_name(&pci_dev->addr, eventdev_name,
 131                        sizeof(eventdev_name));
 132
 133        eventdev = rte_event_pmd_get_named_dev(eventdev_name);
 134        if (eventdev == NULL)
 135                return -ENODEV;
 136
 137        if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 138                ret = rte_event_dev_close(eventdev->data->dev_id);
 139                if (ret < 0)
 140                        return ret;
 141        }
 142
 143        /* Invoke PMD device un-init function */
 144        if (devuninit)
 145                ret = devuninit(eventdev);
 146        if (ret)
 147                return ret;
 148
 149        /* Free event device */
 150        rte_event_pmd_release(eventdev);
 151
 152        eventdev->dev = NULL;
 153
 154        return 0;
 155}
 156
 157#ifdef __cplusplus
 158}
 159#endif
 160
 161#endif /* _RTE_EVENTDEV_PMD_PCI_H_ */
 162