drivers/net/cxgbe/cxgbe_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2014-2016 Chelsio Communications.
   5  *   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 Chelsio Communications 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 <sys/queue.h>
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include <stdarg.h>
  41 #include <inttypes.h>
  42 #include <netinet/in.h>
  43
  44 #include <rte_byteorder.h>
  45 #include <rte_common.h>
  46 #include <rte_cycles.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_atomic.h>
  61 #include <rte_malloc.h>
  62 #include <rte_random.h>
  63 #include <rte_dev.h>
  64
  65 #include "cxgbe.h"
  66
  67 /*
  68  * Macros needed to support the PCI Device ID Table ...
  69  */
  70 #define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \
  71         static struct rte_pci_id cxgb4_pci_tbl[] = {
  72 #define CH_PCI_DEVICE_ID_FUNCTION 0x4
  73
  74 #define PCI_VENDOR_ID_CHELSIO 0x1425
  75
  76 #define CH_PCI_ID_TABLE_ENTRY(devid) \
  77                 { RTE_PCI_DEVICE(PCI_VENDOR_ID_CHELSIO, (devid)) }
  78
  79 #define CH_PCI_DEVICE_ID_TABLE_DEFINE_END \
  80                 { .vendor_id = 0, } \
  81         }
  82
  83 /*
  84  *... and the PCI ID Table itself ...
  85  */
  86 #include "t4_pci_id_tbl.h"
  87
  88 static uint16_t cxgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
  89                                 uint16_t nb_pkts)
  90 {
  91         struct sge_eth_txq *txq = (struct sge_eth_txq *)tx_queue;
  92         uint16_t pkts_sent, pkts_remain;
  93         uint16_t total_sent = 0;
  94         int ret = 0;
  95
  96         CXGBE_DEBUG_TX(adapter, "%s: txq = %p; tx_pkts = %p; nb_pkts = %d\n",
  97                        __func__, txq, tx_pkts, nb_pkts);
  98
  99         t4_os_lock(&txq->txq_lock);
 100         /* free up desc from already completed tx */
 101         reclaim_completed_tx(&txq->q);
 102         while (total_sent < nb_pkts) {
 103                 pkts_remain = nb_pkts - total_sent;
 104
 105                 for (pkts_sent = 0; pkts_sent < pkts_remain; pkts_sent++) {
 106                         ret = t4_eth_xmit(txq, tx_pkts[total_sent + pkts_sent]);
 107                         if (ret < 0)
 108                                 break;
 109                 }
 110                 if (!pkts_sent)
 111                         break;
 112                 total_sent += pkts_sent;
 113                 /* reclaim as much as possible */
 114                 reclaim_completed_tx(&txq->q);
 115         }
 116
 117         t4_os_unlock(&txq->txq_lock);
 118         return total_sent;
 119 }
 120
 121 static uint16_t cxgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 122                                 uint16_t nb_pkts)
 123 {
 124         struct sge_eth_rxq *rxq = (struct sge_eth_rxq *)rx_queue;
 125         unsigned int work_done;
 126
 127         CXGBE_DEBUG_RX(adapter, "%s: rxq->rspq.cntxt_id = %u; nb_pkts = %d\n",
 128                        __func__, rxq->rspq.cntxt_id, nb_pkts);
 129
 130         if (cxgbe_poll(&rxq->rspq, rx_pkts, (unsigned int)nb_pkts, &work_done))
 131                 dev_err(adapter, "error in cxgbe poll\n");
 132
 133         CXGBE_DEBUG_RX(adapter, "%s: work_done = %u\n", __func__, work_done);
 134         return work_done;
 135 }
 136
 137 static void cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
 138                                struct rte_eth_dev_info *device_info)
 139 {
 140         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 141         struct adapter *adapter = pi->adapter;
 142         int max_queues = adapter->sge.max_ethqsets / adapter->params.nports;
 143
 144         static const struct rte_eth_desc_lim cxgbe_desc_lim = {
 145                 .nb_max = CXGBE_MAX_RING_DESC_SIZE,
 146                 .nb_min = CXGBE_MIN_RING_DESC_SIZE,
 147                 .nb_align = 1,
 148         };
 149
 150         device_info->min_rx_bufsize = CXGBE_MIN_RX_BUFSIZE;
 151         device_info->max_rx_pktlen = CXGBE_MAX_RX_PKTLEN;
 152         device_info->max_rx_queues = max_queues;
 153         device_info->max_tx_queues = max_queues;
 154         device_info->max_mac_addrs = 1;
 155         /* XXX: For now we support one MAC/port */
 156         device_info->max_vfs = adapter->params.arch.vfcount;
 157         device_info->max_vmdq_pools = 0; /* XXX: For now no support for VMDQ */
 158
 159         device_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP |
 160                                        DEV_RX_OFFLOAD_IPV4_CKSUM |
 161                                        DEV_RX_OFFLOAD_UDP_CKSUM |
 162                                        DEV_RX_OFFLOAD_TCP_CKSUM;
 163
 164         device_info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT |
 165                                        DEV_TX_OFFLOAD_IPV4_CKSUM |
 166                                        DEV_TX_OFFLOAD_UDP_CKSUM |
 167                                        DEV_TX_OFFLOAD_TCP_CKSUM |
 168                                        DEV_TX_OFFLOAD_TCP_TSO;
 169
 170         device_info->reta_size = pi->rss_size;
 171
 172         device_info->rx_desc_lim = cxgbe_desc_lim;
 173         device_info->tx_desc_lim = cxgbe_desc_lim;
 174         device_info->speed_capa = ETH_LINK_SPEED_10G | ETH_LINK_SPEED_40G;
 175 }
 176
 177 static void cxgbe_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 178 {
 179         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 180         struct adapter *adapter = pi->adapter;
 181
 182         t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
 183                       1, -1, 1, -1, false);
 184 }
 185
 186 static void cxgbe_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 187 {
 188         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 189         struct adapter *adapter = pi->adapter;
 190
 191         t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
 192                       0, -1, 1, -1, false);
 193 }
 194
 195 static void cxgbe_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
 196 {
 197         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 198         struct adapter *adapter = pi->adapter;
 199
 200         /* TODO: address filters ?? */
 201
 202         t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
 203                       -1, 1, 1, -1, false);
 204 }
 205
 206 static void cxgbe_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
 207 {
 208         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 209         struct adapter *adapter = pi->adapter;
 210
 211         /* TODO: address filters ?? */
 212
 213         t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
 214                       -1, 0, 1, -1, false);
 215 }
 216
 217 static int cxgbe_dev_link_update(struct rte_eth_dev *eth_dev,
 218                                  __rte_unused int wait_to_complete)
 219 {
 220         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 221         struct adapter *adapter = pi->adapter;
 222         struct sge *s = &adapter->sge;
 223         struct rte_eth_link *old_link = &eth_dev->data->dev_link;
 224         unsigned int work_done, budget = 4;
 225
 226         cxgbe_poll(&s->fw_evtq, NULL, budget, &work_done);
 227         if (old_link->link_status == pi->link_cfg.link_ok)
 228                 return -1;  /* link not changed */
 229
 230         eth_dev->data->dev_link.link_status = pi->link_cfg.link_ok;
 231         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 232         eth_dev->data->dev_link.link_speed = pi->link_cfg.speed;
 233
 234         /* link has changed */
 235         return 0;
 236 }
 237
 238 static int cxgbe_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 239 {
 240         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 241         struct adapter *adapter = pi->adapter;
 242         struct rte_eth_dev_info dev_info;
 243         int err;
 244         uint16_t new_mtu = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
 245
 246         cxgbe_dev_info_get(eth_dev, &dev_info);
 247
 248         /* Must accommodate at least ETHER_MIN_MTU */
 249         if ((new_mtu < ETHER_MIN_MTU) || (new_mtu > dev_info.max_rx_pktlen))
 250                 return -EINVAL;
 251
 252         /* set to jumbo mode if needed */
 253         if (new_mtu > ETHER_MAX_LEN)
 254                 eth_dev->data->dev_conf.rxmode.jumbo_frame = 1;
 255         else
 256                 eth_dev->data->dev_conf.rxmode.jumbo_frame = 0;
 257
 258         err = t4_set_rxmode(adapter, adapter->mbox, pi->viid, new_mtu, -1, -1,
 259                             -1, -1, true);
 260         if (!err)
 261                 eth_dev->data->dev_conf.rxmode.max_rx_pkt_len = new_mtu;
 262
 263         return err;
 264 }
 265
 266 static int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 267                                     uint16_t tx_queue_id);
 268 static int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 269                                     uint16_t tx_queue_id);
 270 static void cxgbe_dev_tx_queue_release(void *q);
 271 static void cxgbe_dev_rx_queue_release(void *q);
 272
 273 /*
 274  * Stop device.
 275  */
 276 static void cxgbe_dev_close(struct rte_eth_dev *eth_dev)
 277 {
 278         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 279         struct adapter *adapter = pi->adapter;
 280         int i, dev_down = 0;
 281
 282         CXGBE_FUNC_TRACE();
 283
 284         if (!(adapter->flags & FULL_INIT_DONE))
 285                 return;
 286
 287         cxgbe_down(pi);
 288
 289         /*
 290          *  We clear queues only if both tx and rx path of the port
 291          *  have been disabled
 292          */
 293         t4_sge_eth_clear_queues(pi);
 294
 295         /*  See if all ports are down */
 296         for_each_port(adapter, i) {
 297                 pi = adap2pinfo(adapter, i);
 298                 /*
 299                  * Skip first port of the adapter since it will be closed
 300                  * by DPDK
 301                  */
 302                 if (i == 0)
 303                         continue;
 304                 dev_down += (pi->eth_dev->data->dev_started == 0) ? 1 : 0;
 305         }
 306
 307         /* If rest of the ports are stopped, then free up resources */
 308         if (dev_down == (adapter->params.nports - 1))
 309                 cxgbe_close(adapter);
 310 }
 311
 312 /* Start the device.
 313  * It returns 0 on success.
 314  */
 315 static int cxgbe_dev_start(struct rte_eth_dev *eth_dev)
 316 {
 317         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 318         struct adapter *adapter = pi->adapter;
 319         int err = 0, i;
 320
 321         CXGBE_FUNC_TRACE();
 322
 323         /*
 324          * If we don't have a connection to the firmware there's nothing we
 325          * can do.
 326          */
 327         if (!(adapter->flags & FW_OK)) {
 328                 err = -ENXIO;
 329                 goto out;
 330         }
 331
 332         if (!(adapter->flags & FULL_INIT_DONE)) {
 333                 err = cxgbe_up(adapter);
 334                 if (err < 0)
 335                         goto out;
 336         }
 337
 338         err = setup_rss(pi);
 339         if (err)
 340                 goto out;
 341
 342         for (i = 0; i < pi->n_tx_qsets; i++) {
 343                 err = cxgbe_dev_tx_queue_start(eth_dev, i);
 344                 if (err)
 345                         goto out;
 346         }
 347
 348         for (i = 0; i < pi->n_rx_qsets; i++) {
 349                 err = cxgbe_dev_rx_queue_start(eth_dev, i);
 350                 if (err)
 351                         goto out;
 352         }
 353
 354         err = link_start(pi);
 355         if (err)
 356                 goto out;
 357
 358 out:
 359         return err;
 360 }
 361
 362 /*
 363  * Stop device: disable rx and tx functions to allow for reconfiguring.
 364  */
 365 static void cxgbe_dev_stop(struct rte_eth_dev *eth_dev)
 366 {
 367         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 368         struct adapter *adapter = pi->adapter;
 369
 370         CXGBE_FUNC_TRACE();
 371
 372         if (!(adapter->flags & FULL_INIT_DONE))
 373                 return;
 374
 375         cxgbe_down(pi);
 376
 377         /*
 378          *  We clear queues only if both tx and rx path of the port
 379          *  have been disabled
 380          */
 381         t4_sge_eth_clear_queues(pi);
 382 }
 383
 384 static int cxgbe_dev_configure(struct rte_eth_dev *eth_dev)
 385 {
 386         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 387         struct adapter *adapter = pi->adapter;
 388         int err;
 389
 390         CXGBE_FUNC_TRACE();
 391
 392         if (!(adapter->flags & FW_QUEUE_BOUND)) {
 393                 err = setup_sge_fwevtq(adapter);
 394                 if (err)
 395                         return err;
 396                 adapter->flags |= FW_QUEUE_BOUND;
 397         }
 398
 399         err = cfg_queue_count(eth_dev);
 400         if (err)
 401                 return err;
 402
 403         return 0;
 404 }
 405
 406 static int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 407                                     uint16_t tx_queue_id)
 408 {
 409         int ret;
 410         struct sge_eth_txq *txq = (struct sge_eth_txq *)
 411                                   (eth_dev->data->tx_queues[tx_queue_id]);
 412
 413         dev_debug(NULL, "%s: tx_queue_id = %d\n", __func__, tx_queue_id);
 414
 415         ret = t4_sge_eth_txq_start(txq);
 416         if (ret == 0)
 417                 eth_dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 418
 419         return ret;
 420 }
 421
 422 static int cxgbe_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
 423                                    uint16_t tx_queue_id)
 424 {
 425         int ret;
 426         struct sge_eth_txq *txq = (struct sge_eth_txq *)
 427                                   (eth_dev->data->tx_queues[tx_queue_id]);
 428
 429         dev_debug(NULL, "%s: tx_queue_id = %d\n", __func__, tx_queue_id);
 430
 431         ret = t4_sge_eth_txq_stop(txq);
 432         if (ret == 0)
 433                 eth_dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 434
 435         return ret;
 436 }
 437
 438 static int cxgbe_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 439                                     uint16_t queue_idx, uint16_t nb_desc,
 440                                     unsigned int socket_id,
 441                                     const struct rte_eth_txconf *tx_conf)
 442 {
 443         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 444         struct adapter *adapter = pi->adapter;
 445         struct sge *s = &adapter->sge;
 446         struct sge_eth_txq *txq = &s->ethtxq[pi->first_qset + queue_idx];
 447         int err = 0;
 448         unsigned int temp_nb_desc;
 449
 450         RTE_SET_USED(tx_conf);
 451
 452         dev_debug(adapter, "%s: eth_dev->data->nb_tx_queues = %d; queue_idx = %d; nb_desc = %d; socket_id = %d; pi->first_qset = %u\n",
 453                   __func__, eth_dev->data->nb_tx_queues, queue_idx, nb_desc,
 454                   socket_id, pi->first_qset);
 455
 456         /*  Free up the existing queue  */
 457         if (eth_dev->data->tx_queues[queue_idx]) {
 458                 cxgbe_dev_tx_queue_release(eth_dev->data->tx_queues[queue_idx]);
 459                 eth_dev->data->tx_queues[queue_idx] = NULL;
 460         }
 461
 462         eth_dev->data->tx_queues[queue_idx] = (void *)txq;
 463
 464         /* Sanity Checking
 465          *
 466          * nb_desc should be > 1023 and <= CXGBE_MAX_RING_DESC_SIZE
 467          */
 468         temp_nb_desc = nb_desc;
 469         if (nb_desc < CXGBE_MIN_RING_DESC_SIZE) {
 470                 dev_warn(adapter, "%s: number of descriptors must be >= %d. Using default [%d]\n",
 471                          __func__, CXGBE_MIN_RING_DESC_SIZE,
 472                          CXGBE_DEFAULT_TX_DESC_SIZE);
 473                 temp_nb_desc = CXGBE_DEFAULT_TX_DESC_SIZE;
 474         } else if (nb_desc > CXGBE_MAX_RING_DESC_SIZE) {
 475                 dev_err(adapter, "%s: number of descriptors must be between %d and %d inclusive. Default [%d]\n",
 476                         __func__, CXGBE_MIN_RING_DESC_SIZE,
 477                         CXGBE_MAX_RING_DESC_SIZE, CXGBE_DEFAULT_TX_DESC_SIZE);
 478                 return -(EINVAL);
 479         }
 480
 481         txq->q.size = temp_nb_desc;
 482
 483         err = t4_sge_alloc_eth_txq(adapter, txq, eth_dev, queue_idx,
 484                                    s->fw_evtq.cntxt_id, socket_id);
 485
 486         dev_debug(adapter, "%s: txq->q.cntxt_id= %d err = %d\n",
 487                   __func__, txq->q.cntxt_id, err);
 488
 489         return err;
 490 }
 491
 492 static void cxgbe_dev_tx_queue_release(void *q)
 493 {
 494         struct sge_eth_txq *txq = (struct sge_eth_txq *)q;
 495
 496         if (txq) {
 497                 struct port_info *pi = (struct port_info *)
 498                                        (txq->eth_dev->data->dev_private);
 499                 struct adapter *adap = pi->adapter;
 500
 501                 dev_debug(adapter, "%s: pi->port_id = %d; tx_queue_id = %d\n",
 502                           __func__, pi->port_id, txq->q.cntxt_id);
 503
 504                 t4_sge_eth_txq_release(adap, txq);
 505         }
 506 }
 507
 508 static int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 509                                     uint16_t rx_queue_id)
 510 {
 511         int ret;
 512         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 513         struct adapter *adap = pi->adapter;
 514         struct sge_rspq *q;
 515
 516         dev_debug(adapter, "%s: pi->port_id = %d; rx_queue_id = %d\n",
 517                   __func__, pi->port_id, rx_queue_id);
 518
 519         q = eth_dev->data->rx_queues[rx_queue_id];
 520
 521         ret = t4_sge_eth_rxq_start(adap, q);
 522         if (ret == 0)
 523                 eth_dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 524
 525         return ret;
 526 }
 527
 528 static int cxgbe_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
 529                                    uint16_t rx_queue_id)
 530 {
 531         int ret;
 532         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 533         struct adapter *adap = pi->adapter;
 534         struct sge_rspq *q;
 535
 536         dev_debug(adapter, "%s: pi->port_id = %d; rx_queue_id = %d\n",
 537                   __func__, pi->port_id, rx_queue_id);
 538
 539         q = eth_dev->data->rx_queues[rx_queue_id];
 540         ret = t4_sge_eth_rxq_stop(adap, q);
 541         if (ret == 0)
 542                 eth_dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 543
 544         return ret;
 545 }
 546
 547 static int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 548                                     uint16_t queue_idx, uint16_t nb_desc,
 549                                     unsigned int socket_id,
 550                                     const struct rte_eth_rxconf *rx_conf,
 551                                     struct rte_mempool *mp)
 552 {
 553         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 554         struct adapter *adapter = pi->adapter;
 555         struct sge *s = &adapter->sge;
 556         struct sge_eth_rxq *rxq = &s->ethrxq[pi->first_qset + queue_idx];
 557         int err = 0;
 558         int msi_idx = 0;
 559         unsigned int temp_nb_desc;
 560         struct rte_eth_dev_info dev_info;
 561         unsigned int pkt_len = eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
 562
 563         RTE_SET_USED(rx_conf);
 564
 565         dev_debug(adapter, "%s: eth_dev->data->nb_rx_queues = %d; queue_idx = %d; nb_desc = %d; socket_id = %d; mp = %p\n",
 566                   __func__, eth_dev->data->nb_rx_queues, queue_idx, nb_desc,
 567                   socket_id, mp);
 568
 569         cxgbe_dev_info_get(eth_dev, &dev_info);
 570
 571         /* Must accommodate at least ETHER_MIN_MTU */
 572         if ((pkt_len < dev_info.min_rx_bufsize) ||
 573             (pkt_len > dev_info.max_rx_pktlen)) {
 574                 dev_err(adap, "%s: max pkt len must be > %d and <= %d\n",
 575                         __func__, dev_info.min_rx_bufsize,
 576                         dev_info.max_rx_pktlen);
 577                 return -EINVAL;
 578         }
 579
 580         /*  Free up the existing queue  */
 581         if (eth_dev->data->rx_queues[queue_idx]) {
 582                 cxgbe_dev_rx_queue_release(eth_dev->data->rx_queues[queue_idx]);
 583                 eth_dev->data->rx_queues[queue_idx] = NULL;
 584         }
 585
 586         eth_dev->data->rx_queues[queue_idx] = (void *)rxq;
 587
 588         /* Sanity Checking
 589          *
 590          * nb_desc should be > 0 and <= CXGBE_MAX_RING_DESC_SIZE
 591          */
 592         temp_nb_desc = nb_desc;
 593         if (nb_desc < CXGBE_MIN_RING_DESC_SIZE) {
 594                 dev_warn(adapter, "%s: number of descriptors must be >= %d. Using default [%d]\n",
 595                          __func__, CXGBE_MIN_RING_DESC_SIZE,
 596                          CXGBE_DEFAULT_RX_DESC_SIZE);
 597                 temp_nb_desc = CXGBE_DEFAULT_RX_DESC_SIZE;
 598         } else if (nb_desc > CXGBE_MAX_RING_DESC_SIZE) {
 599                 dev_err(adapter, "%s: number of descriptors must be between %d and %d inclusive. Default [%d]\n",
 600                         __func__, CXGBE_MIN_RING_DESC_SIZE,
 601                         CXGBE_MAX_RING_DESC_SIZE, CXGBE_DEFAULT_RX_DESC_SIZE);
 602                 return -(EINVAL);
 603         }
 604
 605         rxq->rspq.size = temp_nb_desc;
 606         if ((&rxq->fl) != NULL)
 607                 rxq->fl.size = temp_nb_desc;
 608
 609         /* Set to jumbo mode if necessary */
 610         if (pkt_len > ETHER_MAX_LEN)
 611                 eth_dev->data->dev_conf.rxmode.jumbo_frame = 1;
 612         else
 613                 eth_dev->data->dev_conf.rxmode.jumbo_frame = 0;
 614
 615         err = t4_sge_alloc_rxq(adapter, &rxq->rspq, false, eth_dev, msi_idx,
 616                                &rxq->fl, t4_ethrx_handler,
 617                                t4_get_mps_bg_map(adapter, pi->tx_chan), mp,
 618                                queue_idx, socket_id);
 619
 620         dev_debug(adapter, "%s: err = %d; port_id = %d; cntxt_id = %u\n",
 621                   __func__, err, pi->port_id, rxq->rspq.cntxt_id);
 622         return err;
 623 }
 624
 625 static void cxgbe_dev_rx_queue_release(void *q)
 626 {
 627         struct sge_eth_rxq *rxq = (struct sge_eth_rxq *)q;
 628         struct sge_rspq *rq = &rxq->rspq;
 629
 630         if (rq) {
 631                 struct port_info *pi = (struct port_info *)
 632                                        (rq->eth_dev->data->dev_private);
 633                 struct adapter *adap = pi->adapter;
 634
 635                 dev_debug(adapter, "%s: pi->port_id = %d; rx_queue_id = %d\n",
 636                           __func__, pi->port_id, rxq->rspq.cntxt_id);
 637
 638                 t4_sge_eth_rxq_release(adap, rxq);
 639         }
 640 }
 641
 642 /*
 643  * Get port statistics.
 644  */
 645 static void cxgbe_dev_stats_get(struct rte_eth_dev *eth_dev,
 646                                 struct rte_eth_stats *eth_stats)
 647 {
 648         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 649         struct adapter *adapter = pi->adapter;
 650         struct sge *s = &adapter->sge;
 651         struct port_stats ps;
 652         unsigned int i;
 653
 654         cxgbe_stats_get(pi, &ps);
 655
 656         /* RX Stats */
 657         eth_stats->ipackets = ps.rx_frames;
 658         eth_stats->ibytes   = ps.rx_octets;
 659         eth_stats->imissed  = ps.rx_ovflow0 + ps.rx_ovflow1 +
 660                               ps.rx_ovflow2 + ps.rx_ovflow3 +
 661                               ps.rx_trunc0 + ps.rx_trunc1 +
 662                               ps.rx_trunc2 + ps.rx_trunc3;
 663         eth_stats->ierrors  = ps.rx_symbol_err + ps.rx_fcs_err +
 664                               ps.rx_jabber + ps.rx_too_long + ps.rx_runt +
 665                               ps.rx_len_err;
 666
 667         /* TX Stats */
 668         eth_stats->opackets = ps.tx_frames;
 669         eth_stats->obytes   = ps.tx_octets;
 670         eth_stats->oerrors  = ps.tx_error_frames;
 671
 672         for (i = 0; i < pi->n_rx_qsets; i++) {
 673                 struct sge_eth_rxq *rxq =
 674                         &s->ethrxq[pi->first_qset + i];
 675
 676                 eth_stats->q_ipackets[i] = rxq->stats.pkts;
 677                 eth_stats->q_ibytes[i] = rxq->stats.rx_bytes;
 678         }
 679
 680         for (i = 0; i < pi->n_tx_qsets; i++) {
 681                 struct sge_eth_txq *txq =
 682                         &s->ethtxq[pi->first_qset + i];
 683
 684                 eth_stats->q_opackets[i] = txq->stats.pkts;
 685                 eth_stats->q_obytes[i] = txq->stats.tx_bytes;
 686                 eth_stats->q_errors[i] = txq->stats.mapping_err;
 687         }
 688 }
 689
 690 /*
 691  * Reset port statistics.
 692  */
 693 static void cxgbe_dev_stats_reset(struct rte_eth_dev *eth_dev)
 694 {
 695         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 696         struct adapter *adapter = pi->adapter;
 697         struct sge *s = &adapter->sge;
 698         unsigned int i;
 699
 700         cxgbe_stats_reset(pi);
 701         for (i = 0; i < pi->n_rx_qsets; i++) {
 702                 struct sge_eth_rxq *rxq =
 703                         &s->ethrxq[pi->first_qset + i];
 704
 705                 rxq->stats.pkts = 0;
 706                 rxq->stats.rx_bytes = 0;
 707         }
 708         for (i = 0; i < pi->n_tx_qsets; i++) {
 709                 struct sge_eth_txq *txq =
 710                         &s->ethtxq[pi->first_qset + i];
 711
 712                 txq->stats.pkts = 0;
 713                 txq->stats.tx_bytes = 0;
 714                 txq->stats.mapping_err = 0;
 715         }
 716 }
 717
 718 static int cxgbe_flow_ctrl_get(struct rte_eth_dev *eth_dev,
 719                                struct rte_eth_fc_conf *fc_conf)
 720 {
 721         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 722         struct link_config *lc = &pi->link_cfg;
 723         int rx_pause, tx_pause;
 724
 725         fc_conf->autoneg = lc->fc & PAUSE_AUTONEG;
 726         rx_pause = lc->fc & PAUSE_RX;
 727         tx_pause = lc->fc & PAUSE_TX;
 728
 729         if (rx_pause && tx_pause)
 730                 fc_conf->mode = RTE_FC_FULL;
 731         else if (rx_pause)
 732                 fc_conf->mode = RTE_FC_RX_PAUSE;
 733         else if (tx_pause)
 734                 fc_conf->mode = RTE_FC_TX_PAUSE;
 735         else
 736                 fc_conf->mode = RTE_FC_NONE;
 737         return 0;
 738 }
 739
 740 static int cxgbe_flow_ctrl_set(struct rte_eth_dev *eth_dev,
 741                                struct rte_eth_fc_conf *fc_conf)
 742 {
 743         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 744         struct adapter *adapter = pi->adapter;
 745         struct link_config *lc = &pi->link_cfg;
 746
 747         if (lc->supported & FW_PORT_CAP_ANEG) {
 748                 if (fc_conf->autoneg)
 749                         lc->requested_fc |= PAUSE_AUTONEG;
 750                 else
 751                         lc->requested_fc &= ~PAUSE_AUTONEG;
 752         }
 753
 754         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 755             (fc_conf->mode & RTE_FC_RX_PAUSE))
 756                 lc->requested_fc |= PAUSE_RX;
 757         else
 758                 lc->requested_fc &= ~PAUSE_RX;
 759
 760         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 761             (fc_conf->mode & RTE_FC_TX_PAUSE))
 762                 lc->requested_fc |= PAUSE_TX;
 763         else
 764                 lc->requested_fc &= ~PAUSE_TX;
 765
 766         return t4_link_l1cfg(adapter, adapter->mbox, pi->tx_chan,
 767                              &pi->link_cfg);
 768 }
 769
 770 static const uint32_t *
 771 cxgbe_dev_supported_ptypes_get(struct rte_eth_dev *eth_dev)
 772 {
 773         static const uint32_t ptypes[] = {
 774                 RTE_PTYPE_L3_IPV4,
 775                 RTE_PTYPE_L3_IPV6,
 776                 RTE_PTYPE_UNKNOWN
 777         };
 778
 779         if (eth_dev->rx_pkt_burst == cxgbe_recv_pkts)
 780                 return ptypes;
 781         return NULL;
 782 }
 783
 784 static int cxgbe_get_eeprom_length(struct rte_eth_dev *dev)
 785 {
 786         RTE_SET_USED(dev);
 787         return EEPROMSIZE;
 788 }
 789
 790 /**
 791  * eeprom_ptov - translate a physical EEPROM address to virtual
 792  * @phys_addr: the physical EEPROM address
 793  * @fn: the PCI function number
 794  * @sz: size of function-specific area
 795  *
 796  * Translate a physical EEPROM address to virtual.  The first 1K is
 797  * accessed through virtual addresses starting at 31K, the rest is
 798  * accessed through virtual addresses starting at 0.
 799  *
 800  * The mapping is as follows:
 801  * [0..1K) -> [31K..32K)
 802  * [1K..1K+A) -> [31K-A..31K)
 803  * [1K+A..ES) -> [0..ES-A-1K)
 804  *
 805  * where A = @fn * @sz, and ES = EEPROM size.
 806  */
 807 static int eeprom_ptov(unsigned int phys_addr, unsigned int fn, unsigned int sz)
 808 {
 809         fn *= sz;
 810         if (phys_addr < 1024)
 811                 return phys_addr + (31 << 10);
 812         if (phys_addr < 1024 + fn)
 813                 return fn + phys_addr - 1024;
 814         if (phys_addr < EEPROMSIZE)
 815                 return phys_addr - 1024 - fn;
 816         if (phys_addr < EEPROMVSIZE)
 817                 return phys_addr - 1024;
 818         return -EINVAL;
 819 }
 820
 821 /* The next two routines implement eeprom read/write from physical addresses.
 822  */
 823 static int eeprom_rd_phys(struct adapter *adap, unsigned int phys_addr, u32 *v)
 824 {
 825         int vaddr = eeprom_ptov(phys_addr, adap->pf, EEPROMPFSIZE);
 826
 827         if (vaddr >= 0)
 828                 vaddr = t4_seeprom_read(adap, vaddr, v);
 829         return vaddr < 0 ? vaddr : 0;
 830 }
 831
 832 static int eeprom_wr_phys(struct adapter *adap, unsigned int phys_addr, u32 v)
 833 {
 834         int vaddr = eeprom_ptov(phys_addr, adap->pf, EEPROMPFSIZE);
 835
 836         if (vaddr >= 0)
 837                 vaddr = t4_seeprom_write(adap, vaddr, v);
 838         return vaddr < 0 ? vaddr : 0;
 839 }
 840
 841 #define EEPROM_MAGIC 0x38E2F10C
 842
 843 static int cxgbe_get_eeprom(struct rte_eth_dev *dev,
 844                             struct rte_dev_eeprom_info *e)
 845 {
 846         struct port_info *pi = (struct port_info *)(dev->data->dev_private);
 847         struct adapter *adapter = pi->adapter;
 848         u32 i, err = 0;
 849         u8 *buf = rte_zmalloc(NULL, EEPROMSIZE, 0);
 850
 851         if (!buf)
 852                 return -ENOMEM;
 853
 854         e->magic = EEPROM_MAGIC;
 855         for (i = e->offset & ~3; !err && i < e->offset + e->length; i += 4)
 856                 err = eeprom_rd_phys(adapter, i, (u32 *)&buf[i]);
 857
 858         if (!err)
 859                 rte_memcpy(e->data, buf + e->offset, e->length);
 860         rte_free(buf);
 861         return err;
 862 }
 863
 864 static int cxgbe_set_eeprom(struct rte_eth_dev *dev,
 865                             struct rte_dev_eeprom_info *eeprom)
 866 {
 867         struct port_info *pi = (struct port_info *)(dev->data->dev_private);
 868         struct adapter *adapter = pi->adapter;
 869         u8 *buf;
 870         int err = 0;
 871         u32 aligned_offset, aligned_len, *p;
 872
 873         if (eeprom->magic != EEPROM_MAGIC)
 874                 return -EINVAL;
 875
 876         aligned_offset = eeprom->offset & ~3;
 877         aligned_len = (eeprom->length + (eeprom->offset & 3) + 3) & ~3;
 878
 879         if (adapter->pf > 0) {
 880                 u32 start = 1024 + adapter->pf * EEPROMPFSIZE;
 881
 882                 if (aligned_offset < start ||
 883                     aligned_offset + aligned_len > start + EEPROMPFSIZE)
 884                         return -EPERM;
 885         }
 886
 887         if (aligned_offset != eeprom->offset || aligned_len != eeprom->length) {
 888                 /* RMW possibly needed for first or last words.
 889                  */
 890                 buf = rte_zmalloc(NULL, aligned_len, 0);
 891                 if (!buf)
 892                         return -ENOMEM;
 893                 err = eeprom_rd_phys(adapter, aligned_offset, (u32 *)buf);
 894                 if (!err && aligned_len > 4)
 895                         err = eeprom_rd_phys(adapter,
 896                                              aligned_offset + aligned_len - 4,
 897                                              (u32 *)&buf[aligned_len - 4]);
 898                 if (err)
 899                         goto out;
 900                 rte_memcpy(buf + (eeprom->offset & 3), eeprom->data,
 901                            eeprom->length);
 902         } else {
 903                 buf = eeprom->data;
 904         }
 905
 906         err = t4_seeprom_wp(adapter, false);
 907         if (err)
 908                 goto out;
 909
 910         for (p = (u32 *)buf; !err && aligned_len; aligned_len -= 4, p++) {
 911                 err = eeprom_wr_phys(adapter, aligned_offset, *p);
 912                 aligned_offset += 4;
 913         }
 914
 915         if (!err)
 916                 err = t4_seeprom_wp(adapter, true);
 917 out:
 918         if (buf != eeprom->data)
 919                 rte_free(buf);
 920         return err;
 921 }
 922
 923 static int cxgbe_get_regs_len(struct rte_eth_dev *eth_dev)
 924 {
 925         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 926         struct adapter *adapter = pi->adapter;
 927
 928         return t4_get_regs_len(adapter) / sizeof(uint32_t);
 929 }
 930
 931 static int cxgbe_get_regs(struct rte_eth_dev *eth_dev,
 932                           struct rte_dev_reg_info *regs)
 933 {
 934         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 935         struct adapter *adapter = pi->adapter;
 936
 937         regs->version = CHELSIO_CHIP_VERSION(adapter->params.chip) |
 938                 (CHELSIO_CHIP_RELEASE(adapter->params.chip) << 10) |
 939                 (1 << 16);
 940
 941         if (regs->data == NULL) {
 942                 regs->length = cxgbe_get_regs_len(eth_dev);
 943                 regs->width = sizeof(uint32_t);
 944
 945                 return 0;
 946         }
 947
 948         t4_get_regs(adapter, regs->data, (regs->length * sizeof(uint32_t)));
 949
 950         return 0;
 951 }
 952
 953 static const struct eth_dev_ops cxgbe_eth_dev_ops = {
 954         .dev_start              = cxgbe_dev_start,
 955         .dev_stop               = cxgbe_dev_stop,
 956         .dev_close              = cxgbe_dev_close,
 957         .promiscuous_enable     = cxgbe_dev_promiscuous_enable,
 958         .promiscuous_disable    = cxgbe_dev_promiscuous_disable,
 959         .allmulticast_enable    = cxgbe_dev_allmulticast_enable,
 960         .allmulticast_disable   = cxgbe_dev_allmulticast_disable,
 961         .dev_configure          = cxgbe_dev_configure,
 962         .dev_infos_get          = cxgbe_dev_info_get,
 963         .dev_supported_ptypes_get = cxgbe_dev_supported_ptypes_get,
 964         .link_update            = cxgbe_dev_link_update,
 965         .mtu_set                = cxgbe_dev_mtu_set,
 966         .tx_queue_setup         = cxgbe_dev_tx_queue_setup,
 967         .tx_queue_start         = cxgbe_dev_tx_queue_start,
 968         .tx_queue_stop          = cxgbe_dev_tx_queue_stop,
 969         .tx_queue_release       = cxgbe_dev_tx_queue_release,
 970         .rx_queue_setup         = cxgbe_dev_rx_queue_setup,
 971         .rx_queue_start         = cxgbe_dev_rx_queue_start,
 972         .rx_queue_stop          = cxgbe_dev_rx_queue_stop,
 973         .rx_queue_release       = cxgbe_dev_rx_queue_release,
 974         .stats_get              = cxgbe_dev_stats_get,
 975         .stats_reset            = cxgbe_dev_stats_reset,
 976         .flow_ctrl_get          = cxgbe_flow_ctrl_get,
 977         .flow_ctrl_set          = cxgbe_flow_ctrl_set,
 978         .get_eeprom_length      = cxgbe_get_eeprom_length,
 979         .get_eeprom             = cxgbe_get_eeprom,
 980         .set_eeprom             = cxgbe_set_eeprom,
 981         .get_reg                = cxgbe_get_regs,
 982 };
 983
 984 /*
 985  * Initialize driver
 986  * It returns 0 on success.
 987  */
 988 static int eth_cxgbe_dev_init(struct rte_eth_dev *eth_dev)
 989 {
 990         struct rte_pci_device *pci_dev;
 991         struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 992         struct adapter *adapter = NULL;
 993         char name[RTE_ETH_NAME_MAX_LEN];
 994         int err = 0;
 995
 996         CXGBE_FUNC_TRACE();
 997
 998         eth_dev->dev_ops = &cxgbe_eth_dev_ops;
 999         eth_dev->rx_pkt_burst = &cxgbe_recv_pkts;
1000         eth_dev->tx_pkt_burst = &cxgbe_xmit_pkts;
1001
1002         /* for secondary processes, we don't initialise any further as primary
1003          * has already done this work.
1004          */
1005         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1006                 return 0;
1007
1008         pci_dev = eth_dev->pci_dev;
1009
1010         snprintf(name, sizeof(name), "cxgbeadapter%d", eth_dev->data->port_id);
1011         adapter = rte_zmalloc(name, sizeof(*adapter), 0);
1012         if (!adapter)
1013                 return -1;
1014
1015         adapter->use_unpacked_mode = 1;
1016         adapter->regs = (void *)pci_dev->mem_resource[0].addr;
1017         if (!adapter->regs) {
1018                 dev_err(adapter, "%s: cannot map device registers\n", __func__);
1019                 err = -ENOMEM;
1020                 goto out_free_adapter;
1021         }
1022         adapter->pdev = pci_dev;
1023         adapter->eth_dev = eth_dev;
1024         pi->adapter = adapter;
1025
1026         err = cxgbe_probe(adapter);
1027         if (err) {
1028                 dev_err(adapter, "%s: cxgbe probe failed with err %d\n",
1029                         __func__, err);
1030                 goto out_free_adapter;
1031         }
1032
1033         return 0;
1034
1035 out_free_adapter:
1036         rte_free(adapter);
1037         return err;
1038 }
1039
1040 static struct eth_driver rte_cxgbe_pmd = {
1041         .pci_drv = {
1042                 .id_table = cxgb4_pci_tbl,
1043                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
1044                 .probe = rte_eth_dev_pci_probe,
1045                 .remove = rte_eth_dev_pci_remove,
1046         },
1047         .eth_dev_init = eth_cxgbe_dev_init,
1048         .dev_private_size = sizeof(struct port_info),
1049 };
1050
1051 RTE_PMD_REGISTER_PCI(net_cxgbe, rte_cxgbe_pmd.pci_drv);
1052 RTE_PMD_REGISTER_PCI_TABLE(net_cxgbe, cxgb4_pci_tbl);
1053 RTE_PMD_REGISTER_KMOD_DEP(net_cxgbe, "* igb_uio | uio_pci_generic | vfio");