drivers/net/dpaa/dpaa_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2016 Freescale Semiconductor, Inc. All rights reserved.
   5  *   Copyright 2017 NXP.
   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 /* System headers */
  34 #include <stdio.h>
  35 #include <inttypes.h>
  36 #include <unistd.h>
  37 #include <limits.h>
  38 #include <sched.h>
  39 #include <signal.h>
  40 #include <pthread.h>
  41 #include <sys/types.h>
  42 #include <sys/syscall.h>
  43
  44 #include <rte_config.h>
  45 #include <rte_byteorder.h>
  46 #include <rte_common.h>
  47 #include <rte_interrupts.h>
  48 #include <rte_log.h>
  49 #include <rte_debug.h>
  50 #include <rte_pci.h>
  51 #include <rte_atomic.h>
  52 #include <rte_branch_prediction.h>
  53 #include <rte_memory.h>
  54 #include <rte_memzone.h>
  55 #include <rte_tailq.h>
  56 #include <rte_eal.h>
  57 #include <rte_alarm.h>
  58 #include <rte_ether.h>
  59 #include <rte_ethdev.h>
  60 #include <rte_malloc.h>
  61 #include <rte_ring.h>
  62
  63 #include <rte_dpaa_bus.h>
  64 #include <rte_dpaa_logs.h>
  65
  66 #include <dpaa_ethdev.h>
  67
  68 /* Keep track of whether QMAN and BMAN have been globally initialized */
  69 static int is_global_init;
  70
  71 static int
  72 dpaa_eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
  73 {
  74         PMD_INIT_FUNC_TRACE();
  75
  76         return 0;
  77 }
  78
  79 static int dpaa_eth_dev_start(struct rte_eth_dev *dev)
  80 {
  81         PMD_INIT_FUNC_TRACE();
  82
  83         /* Change tx callback to the real one */
  84         dev->tx_pkt_burst = NULL;
  85
  86         return 0;
  87 }
  88
  89 static void dpaa_eth_dev_stop(struct rte_eth_dev *dev)
  90 {
  91         dev->tx_pkt_burst = NULL;
  92 }
  93
  94 static void dpaa_eth_dev_close(struct rte_eth_dev *dev __rte_unused)
  95 {
  96         PMD_INIT_FUNC_TRACE();
  97 }
  98
  99 static struct eth_dev_ops dpaa_devops = {
 100         .dev_configure            = dpaa_eth_dev_configure,
 101         .dev_start                = dpaa_eth_dev_start,
 102         .dev_stop                 = dpaa_eth_dev_stop,
 103         .dev_close                = dpaa_eth_dev_close,
 104 };
 105
 106 /* Initialise a network interface */
 107 static int
 108 dpaa_dev_init(struct rte_eth_dev *eth_dev)
 109 {
 110         int dev_id;
 111         struct rte_dpaa_device *dpaa_device;
 112         struct dpaa_if *dpaa_intf;
 113
 114         PMD_INIT_FUNC_TRACE();
 115
 116         /* For secondary processes, the primary has done all the work */
 117         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 118                 return 0;
 119
 120         dpaa_device = DEV_TO_DPAA_DEVICE(eth_dev->device);
 121         dev_id = dpaa_device->id.dev_id;
 122         dpaa_intf = eth_dev->data->dev_private;
 123
 124         dpaa_intf->name = dpaa_device->name;
 125
 126         dpaa_intf->ifid = dev_id;
 127
 128         eth_dev->dev_ops = &dpaa_devops;
 129
 130         return 0;
 131 }
 132
 133 static int
 134 dpaa_dev_uninit(struct rte_eth_dev *dev)
 135 {
 136         struct dpaa_if *dpaa_intf = dev->data->dev_private;
 137
 138         PMD_INIT_FUNC_TRACE();
 139
 140         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 141                 return -EPERM;
 142
 143         if (!dpaa_intf) {
 144                 DPAA_PMD_WARN("Already closed or not started");
 145                 return -1;
 146         }
 147
 148         dpaa_eth_dev_close(dev);
 149
 150         dev->dev_ops = NULL;
 151         dev->rx_pkt_burst = NULL;
 152         dev->tx_pkt_burst = NULL;
 153
 154         return 0;
 155 }
 156
 157 static int
 158 rte_dpaa_probe(struct rte_dpaa_driver *dpaa_drv,
 159                struct rte_dpaa_device *dpaa_dev)
 160 {
 161         int diag;
 162         int ret;
 163         struct rte_eth_dev *eth_dev;
 164
 165         PMD_INIT_FUNC_TRACE();
 166
 167         /* In case of secondary process, the device is already configured
 168          * and no further action is required, except portal initialization
 169          * and verifying secondary attachment to port name.
 170          */
 171         if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
 172                 eth_dev = rte_eth_dev_attach_secondary(dpaa_dev->name);
 173                 if (!eth_dev)
 174                         return -ENOMEM;
 175                 return 0;
 176         }
 177
 178         if (!is_global_init) {
 179                 /* One time load of Qman/Bman drivers */
 180                 ret = qman_global_init();
 181                 if (ret) {
 182                         DPAA_PMD_ERR("QMAN initialization failed: %d",
 183                                      ret);
 184                         return ret;
 185                 }
 186                 ret = bman_global_init();
 187                 if (ret) {
 188                         DPAA_PMD_ERR("BMAN initialization failed: %d",
 189                                      ret);
 190                         return ret;
 191                 }
 192
 193                 is_global_init = 1;
 194         }
 195
 196         ret = rte_dpaa_portal_init((void *)1);
 197         if (ret) {
 198                 DPAA_PMD_ERR("Unable to initialize portal");
 199                 return ret;
 200         }
 201
 202         eth_dev = rte_eth_dev_allocate(dpaa_dev->name);
 203         if (eth_dev == NULL)
 204                 return -ENOMEM;
 205
 206         eth_dev->data->dev_private = rte_zmalloc(
 207                                         "ethdev private structure",
 208                                         sizeof(struct dpaa_if),
 209                                         RTE_CACHE_LINE_SIZE);
 210         if (!eth_dev->data->dev_private) {
 211                 DPAA_PMD_ERR("Cannot allocate memzone for port data");
 212                 rte_eth_dev_release_port(eth_dev);
 213                 return -ENOMEM;
 214         }
 215
 216         eth_dev->device = &dpaa_dev->device;
 217         eth_dev->device->driver = &dpaa_drv->driver;
 218         dpaa_dev->eth_dev = eth_dev;
 219
 220         /* Invoke PMD device initialization function */
 221         diag = dpaa_dev_init(eth_dev);
 222         if (diag == 0)
 223                 return 0;
 224
 225         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 226                 rte_free(eth_dev->data->dev_private);
 227
 228         rte_eth_dev_release_port(eth_dev);
 229         return diag;
 230 }
 231
 232 static int
 233 rte_dpaa_remove(struct rte_dpaa_device *dpaa_dev)
 234 {
 235         struct rte_eth_dev *eth_dev;
 236
 237         PMD_INIT_FUNC_TRACE();
 238
 239         eth_dev = dpaa_dev->eth_dev;
 240         dpaa_dev_uninit(eth_dev);
 241
 242         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 243                 rte_free(eth_dev->data->dev_private);
 244
 245         rte_eth_dev_release_port(eth_dev);
 246
 247         return 0;
 248 }
 249
 250 static struct rte_dpaa_driver rte_dpaa_pmd = {
 251         .drv_type = FSL_DPAA_ETH,
 252         .probe = rte_dpaa_probe,
 253         .remove = rte_dpaa_remove,
 254 };
 255
 256 RTE_PMD_REGISTER_DPAA(net_dpaa, rte_dpaa_pmd);