drivers/net/dpaa2/dpaa2_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (c) 2016 Freescale Semiconductor, Inc. All rights reserved.
   5  *   Copyright (c) 2016 NXP. All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Freescale Semiconductor, Inc nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <time.h>
  35 #include <net/if.h>
  36
  37 #include <rte_mbuf.h>
  38 #include <rte_ethdev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_memcpy.h>
  41 #include <rte_string_fns.h>
  42 #include <rte_cycles.h>
  43 #include <rte_kvargs.h>
  44 #include <rte_dev.h>
  45 #include <rte_ethdev.h>
  46 #include <rte_fslmc.h>
  47
  48 #include <fslmc_vfio.h>
  49 #include "dpaa2_ethdev.h"
  50
  51 static struct rte_dpaa2_driver rte_dpaa2_pmd;
  52
  53 static int
  54 dpaa2_dev_init(struct rte_eth_dev *eth_dev)
  55 {
  56         /* For secondary processes, the primary has done all the work */
  57         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  58                 return 0;
  59
  60         eth_dev->data->drv_name = rte_dpaa2_pmd.driver.name;
  61
  62         return 0;
  63 }
  64
  65 static int
  66 dpaa2_dev_uninit(struct rte_eth_dev *eth_dev __rte_unused)
  67 {
  68         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  69                 return -EPERM;
  70
  71         return 0;
  72 }
  73
  74 static int
  75 rte_dpaa2_probe(struct rte_dpaa2_driver *dpaa2_drv __rte_unused,
  76                 struct rte_dpaa2_device *dpaa2_dev)
  77 {
  78         struct rte_eth_dev *eth_dev;
  79         char ethdev_name[RTE_ETH_NAME_MAX_LEN];
  80
  81         int diag;
  82
  83         sprintf(ethdev_name, "dpni-%d", dpaa2_dev->object_id);
  84
  85         eth_dev = rte_eth_dev_allocate(ethdev_name);
  86         if (eth_dev == NULL)
  87                 return -ENOMEM;
  88
  89         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
  90                 eth_dev->data->dev_private = rte_zmalloc(
  91                                                 "ethdev private structure",
  92                                                 sizeof(struct dpaa2_dev_priv),
  93                                                 RTE_CACHE_LINE_SIZE);
  94                 if (eth_dev->data->dev_private == NULL) {
  95                         RTE_LOG(CRIT, PMD, "Cannot allocate memzone for"
  96                                 " private port data\n");
  97                         rte_eth_dev_release_port(eth_dev);
  98                         return -ENOMEM;
  99                 }
 100         }
 101         eth_dev->device = &dpaa2_dev->device;
 102         dpaa2_dev->eth_dev = eth_dev;
 103         eth_dev->data->rx_mbuf_alloc_failed = 0;
 104
 105         /* Invoke PMD device initialization function */
 106         diag = dpaa2_dev_init(eth_dev);
 107         if (diag == 0)
 108                 return 0;
 109
 110         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 111                 rte_free(eth_dev->data->dev_private);
 112         rte_eth_dev_release_port(eth_dev);
 113         return diag;
 114 }
 115
 116 static int
 117 rte_dpaa2_remove(struct rte_dpaa2_device *dpaa2_dev)
 118 {
 119         struct rte_eth_dev *eth_dev;
 120
 121         eth_dev = dpaa2_dev->eth_dev;
 122         dpaa2_dev_uninit(eth_dev);
 123
 124         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 125                 rte_free(eth_dev->data->dev_private);
 126         rte_eth_dev_release_port(eth_dev);
 127
 128         return 0;
 129 }
 130
 131 static struct rte_dpaa2_driver rte_dpaa2_pmd = {
 132         .drv_type = DPAA2_MC_DPNI_DEVID,
 133         .probe = rte_dpaa2_probe,
 134         .remove = rte_dpaa2_remove,
 135 };
 136
 137 RTE_PMD_REGISTER_DPAA2(net_dpaa2, rte_dpaa2_pmd);