drivers/net/ethernet/qlogic/qede/qede_main.c

   1 /* QLogic qede NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32 #include <linux/module.h>
  33 #include <linux/pci.h>
  34 #include <linux/version.h>
  35 #include <linux/device.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/skbuff.h>
  39 #include <linux/errno.h>
  40 #include <linux/list.h>
  41 #include <linux/string.h>
  42 #include <linux/dma-mapping.h>
  43 #include <linux/interrupt.h>
  44 #include <asm/byteorder.h>
  45 #include <asm/param.h>
  46 #include <linux/io.h>
  47 #include <linux/netdev_features.h>
  48 #include <linux/udp.h>
  49 #include <linux/tcp.h>
  50 #include <net/udp_tunnel.h>
  51 #include <linux/ip.h>
  52 #include <net/ipv6.h>
  53 #include <net/tcp.h>
  54 #include <linux/if_ether.h>
  55 #include <linux/if_vlan.h>
  56 #include <linux/pkt_sched.h>
  57 #include <linux/ethtool.h>
  58 #include <linux/in.h>
  59 #include <linux/random.h>
  60 #include <net/ip6_checksum.h>
  61 #include <linux/bitops.h>
  62 #include <linux/vmalloc.h>
  63 #include <linux/qed/qede_roce.h>
  64 #include "qede.h"
  65 #include "qede_ptp.h"
  66
  67 static char version[] =
  68         "QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
  69
  70 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
  71 MODULE_LICENSE("GPL");
  72 MODULE_VERSION(DRV_MODULE_VERSION);
  73
  74 static uint debug;
  75 module_param(debug, uint, 0);
  76 MODULE_PARM_DESC(debug, " Default debug msglevel");
  77
  78 static const struct qed_eth_ops *qed_ops;
  79
  80 #define CHIP_NUM_57980S_40              0x1634
  81 #define CHIP_NUM_57980S_10              0x1666
  82 #define CHIP_NUM_57980S_MF              0x1636
  83 #define CHIP_NUM_57980S_100             0x1644
  84 #define CHIP_NUM_57980S_50              0x1654
  85 #define CHIP_NUM_57980S_25              0x1656
  86 #define CHIP_NUM_57980S_IOV             0x1664
  87 #define CHIP_NUM_AH                     0x8070
  88 #define CHIP_NUM_AH_IOV                 0x8090
  89
  90 #ifndef PCI_DEVICE_ID_NX2_57980E
  91 #define PCI_DEVICE_ID_57980S_40         CHIP_NUM_57980S_40
  92 #define PCI_DEVICE_ID_57980S_10         CHIP_NUM_57980S_10
  93 #define PCI_DEVICE_ID_57980S_MF         CHIP_NUM_57980S_MF
  94 #define PCI_DEVICE_ID_57980S_100        CHIP_NUM_57980S_100
  95 #define PCI_DEVICE_ID_57980S_50         CHIP_NUM_57980S_50
  96 #define PCI_DEVICE_ID_57980S_25         CHIP_NUM_57980S_25
  97 #define PCI_DEVICE_ID_57980S_IOV        CHIP_NUM_57980S_IOV
  98 #define PCI_DEVICE_ID_AH                CHIP_NUM_AH
  99 #define PCI_DEVICE_ID_AH_IOV            CHIP_NUM_AH_IOV
 100
 101 #endif
 102
 103 enum qede_pci_private {
 104         QEDE_PRIVATE_PF,
 105         QEDE_PRIVATE_VF
 106 };
 107
 108 static const struct pci_device_id qede_pci_tbl[] = {
 109         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
 110         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
 111         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
 112         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
 113         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
 114         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
 115 #ifdef CONFIG_QED_SRIOV
 116         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
 117 #endif
 118         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH), QEDE_PRIVATE_PF},
 119 #ifdef CONFIG_QED_SRIOV
 120         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH_IOV), QEDE_PRIVATE_VF},
 121 #endif
 122         { 0 }
 123 };
 124
 125 MODULE_DEVICE_TABLE(pci, qede_pci_tbl);
 126
 127 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
 128
 129 #define TX_TIMEOUT              (5 * HZ)
 130
 131 /* Utilize last protocol index for XDP */
 132 #define XDP_PI  11
 133
 134 static void qede_remove(struct pci_dev *pdev);
 135 static void qede_shutdown(struct pci_dev *pdev);
 136 static void qede_link_update(void *dev, struct qed_link_output *link);
 137
 138 /* The qede lock is used to protect driver state change and driver flows that
 139  * are not reentrant.
 140  */
 141 void __qede_lock(struct qede_dev *edev)
 142 {
 143         mutex_lock(&edev->qede_lock);
 144 }
 145
 146 void __qede_unlock(struct qede_dev *edev)
 147 {
 148         mutex_unlock(&edev->qede_lock);
 149 }
 150
 151 #ifdef CONFIG_QED_SRIOV
 152 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos,
 153                             __be16 vlan_proto)
 154 {
 155         struct qede_dev *edev = netdev_priv(ndev);
 156
 157         if (vlan > 4095) {
 158                 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
 159                 return -EINVAL;
 160         }
 161
 162         if (vlan_proto != htons(ETH_P_8021Q))
 163                 return -EPROTONOSUPPORT;
 164
 165         DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
 166                    vlan, vf);
 167
 168         return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
 169 }
 170
 171 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
 172 {
 173         struct qede_dev *edev = netdev_priv(ndev);
 174
 175         DP_VERBOSE(edev, QED_MSG_IOV,
 176                    "Setting MAC %02x:%02x:%02x:%02x:%02x:%02x to VF [%d]\n",
 177                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], vfidx);
 178
 179         if (!is_valid_ether_addr(mac)) {
 180                 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
 181                 return -EINVAL;
 182         }
 183
 184         return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
 185 }
 186
 187 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
 188 {
 189         struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
 190         struct qed_dev_info *qed_info = &edev->dev_info.common;
 191         struct qed_update_vport_params *vport_params;
 192         int rc;
 193
 194         vport_params = vzalloc(sizeof(*vport_params));
 195         if (!vport_params)
 196                 return -ENOMEM;
 197         DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);
 198
 199         rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);
 200
 201         /* Enable/Disable Tx switching for PF */
 202         if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
 203             qed_info->mf_mode != QED_MF_NPAR && qed_info->tx_switching) {
 204                 vport_params->vport_id = 0;
 205                 vport_params->update_tx_switching_flg = 1;
 206                 vport_params->tx_switching_flg = num_vfs_param ? 1 : 0;
 207                 edev->ops->vport_update(edev->cdev, vport_params);
 208         }
 209
 210         vfree(vport_params);
 211         return rc;
 212 }
 213 #endif
 214
 215 static struct pci_driver qede_pci_driver = {
 216         .name = "qede",
 217         .id_table = qede_pci_tbl,
 218         .probe = qede_probe,
 219         .remove = qede_remove,
 220         .shutdown = qede_shutdown,
 221 #ifdef CONFIG_QED_SRIOV
 222         .sriov_configure = qede_sriov_configure,
 223 #endif
 224 };
 225
 226 static struct qed_eth_cb_ops qede_ll_ops = {
 227         {
 228 #ifdef CONFIG_RFS_ACCEL
 229                 .arfs_filter_op = qede_arfs_filter_op,
 230 #endif
 231                 .link_update = qede_link_update,
 232         },
 233         .force_mac = qede_force_mac,
 234         .ports_update = qede_udp_ports_update,
 235 };
 236
 237 static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 238                              void *ptr)
 239 {
 240         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 241         struct ethtool_drvinfo drvinfo;
 242         struct qede_dev *edev;
 243
 244         if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
 245                 goto done;
 246
 247         /* Check whether this is a qede device */
 248         if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
 249                 goto done;
 250
 251         memset(&drvinfo, 0, sizeof(drvinfo));
 252         ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
 253         if (strcmp(drvinfo.driver, "qede"))
 254                 goto done;
 255         edev = netdev_priv(ndev);
 256
 257         switch (event) {
 258         case NETDEV_CHANGENAME:
 259                 /* Notify qed of the name change */
 260                 if (!edev->ops || !edev->ops->common)
 261                         goto done;
 262                 edev->ops->common->set_id(edev->cdev, edev->ndev->name, "qede");
 263                 break;
 264         case NETDEV_CHANGEADDR:
 265                 edev = netdev_priv(ndev);
 266                 qede_roce_event_changeaddr(edev);
 267                 break;
 268         }
 269
 270 done:
 271         return NOTIFY_DONE;
 272 }
 273
 274 static struct notifier_block qede_netdev_notifier = {
 275         .notifier_call = qede_netdev_event,
 276 };
 277
 278 static
 279 int __init qede_init(void)
 280 {
 281         int ret;
 282
 283         pr_info("qede_init: %s\n", version);
 284
 285         qed_ops = qed_get_eth_ops();
 286         if (!qed_ops) {
 287                 pr_notice("Failed to get qed ethtool operations\n");
 288                 return -EINVAL;
 289         }
 290
 291         /* Must register notifier before pci ops, since we might miss
 292          * interface rename after pci probe and netdev registeration.
 293          */
 294         ret = register_netdevice_notifier(&qede_netdev_notifier);
 295         if (ret) {
 296                 pr_notice("Failed to register netdevice_notifier\n");
 297                 qed_put_eth_ops();
 298                 return -EINVAL;
 299         }
 300
 301         ret = pci_register_driver(&qede_pci_driver);
 302         if (ret) {
 303                 pr_notice("Failed to register driver\n");
 304                 unregister_netdevice_notifier(&qede_netdev_notifier);
 305                 qed_put_eth_ops();
 306                 return -EINVAL;
 307         }
 308
 309         return 0;
 310 }
 311
 312 static void __exit qede_cleanup(void)
 313 {
 314         if (debug & QED_LOG_INFO_MASK)
 315                 pr_info("qede_cleanup called\n");
 316
 317         unregister_netdevice_notifier(&qede_netdev_notifier);
 318         pci_unregister_driver(&qede_pci_driver);
 319         qed_put_eth_ops();
 320 }
 321
 322 module_init(qede_init);
 323 module_exit(qede_cleanup);
 324
 325 static int qede_open(struct net_device *ndev);
 326 static int qede_close(struct net_device *ndev);
 327
 328 void qede_fill_by_demand_stats(struct qede_dev *edev)
 329 {
 330         struct qede_stats_common *p_common = &edev->stats.common;
 331         struct qed_eth_stats stats;
 332
 333         edev->ops->get_vport_stats(edev->cdev, &stats);
 334
 335         p_common->no_buff_discards = stats.common.no_buff_discards;
 336         p_common->packet_too_big_discard = stats.common.packet_too_big_discard;
 337         p_common->ttl0_discard = stats.common.ttl0_discard;
 338         p_common->rx_ucast_bytes = stats.common.rx_ucast_bytes;
 339         p_common->rx_mcast_bytes = stats.common.rx_mcast_bytes;
 340         p_common->rx_bcast_bytes = stats.common.rx_bcast_bytes;
 341         p_common->rx_ucast_pkts = stats.common.rx_ucast_pkts;
 342         p_common->rx_mcast_pkts = stats.common.rx_mcast_pkts;
 343         p_common->rx_bcast_pkts = stats.common.rx_bcast_pkts;
 344         p_common->mftag_filter_discards = stats.common.mftag_filter_discards;
 345         p_common->mac_filter_discards = stats.common.mac_filter_discards;
 346
 347         p_common->tx_ucast_bytes = stats.common.tx_ucast_bytes;
 348         p_common->tx_mcast_bytes = stats.common.tx_mcast_bytes;
 349         p_common->tx_bcast_bytes = stats.common.tx_bcast_bytes;
 350         p_common->tx_ucast_pkts = stats.common.tx_ucast_pkts;
 351         p_common->tx_mcast_pkts = stats.common.tx_mcast_pkts;
 352         p_common->tx_bcast_pkts = stats.common.tx_bcast_pkts;
 353         p_common->tx_err_drop_pkts = stats.common.tx_err_drop_pkts;
 354         p_common->coalesced_pkts = stats.common.tpa_coalesced_pkts;
 355         p_common->coalesced_events = stats.common.tpa_coalesced_events;
 356         p_common->coalesced_aborts_num = stats.common.tpa_aborts_num;
 357         p_common->non_coalesced_pkts = stats.common.tpa_not_coalesced_pkts;
 358         p_common->coalesced_bytes = stats.common.tpa_coalesced_bytes;
 359
 360         p_common->rx_64_byte_packets = stats.common.rx_64_byte_packets;
 361         p_common->rx_65_to_127_byte_packets =
 362             stats.common.rx_65_to_127_byte_packets;
 363         p_common->rx_128_to_255_byte_packets =
 364             stats.common.rx_128_to_255_byte_packets;
 365         p_common->rx_256_to_511_byte_packets =
 366             stats.common.rx_256_to_511_byte_packets;
 367         p_common->rx_512_to_1023_byte_packets =
 368             stats.common.rx_512_to_1023_byte_packets;
 369         p_common->rx_1024_to_1518_byte_packets =
 370             stats.common.rx_1024_to_1518_byte_packets;
 371         p_common->rx_crc_errors = stats.common.rx_crc_errors;
 372         p_common->rx_mac_crtl_frames = stats.common.rx_mac_crtl_frames;
 373         p_common->rx_pause_frames = stats.common.rx_pause_frames;
 374         p_common->rx_pfc_frames = stats.common.rx_pfc_frames;
 375         p_common->rx_align_errors = stats.common.rx_align_errors;
 376         p_common->rx_carrier_errors = stats.common.rx_carrier_errors;
 377         p_common->rx_oversize_packets = stats.common.rx_oversize_packets;
 378         p_common->rx_jabbers = stats.common.rx_jabbers;
 379         p_common->rx_undersize_packets = stats.common.rx_undersize_packets;
 380         p_common->rx_fragments = stats.common.rx_fragments;
 381         p_common->tx_64_byte_packets = stats.common.tx_64_byte_packets;
 382         p_common->tx_65_to_127_byte_packets =
 383             stats.common.tx_65_to_127_byte_packets;
 384         p_common->tx_128_to_255_byte_packets =
 385             stats.common.tx_128_to_255_byte_packets;
 386         p_common->tx_256_to_511_byte_packets =
 387             stats.common.tx_256_to_511_byte_packets;
 388         p_common->tx_512_to_1023_byte_packets =
 389             stats.common.tx_512_to_1023_byte_packets;
 390         p_common->tx_1024_to_1518_byte_packets =
 391             stats.common.tx_1024_to_1518_byte_packets;
 392         p_common->tx_pause_frames = stats.common.tx_pause_frames;
 393         p_common->tx_pfc_frames = stats.common.tx_pfc_frames;
 394         p_common->brb_truncates = stats.common.brb_truncates;
 395         p_common->brb_discards = stats.common.brb_discards;
 396         p_common->tx_mac_ctrl_frames = stats.common.tx_mac_ctrl_frames;
 397
 398         if (QEDE_IS_BB(edev)) {
 399                 struct qede_stats_bb *p_bb = &edev->stats.bb;
 400
 401                 p_bb->rx_1519_to_1522_byte_packets =
 402                     stats.bb.rx_1519_to_1522_byte_packets;
 403                 p_bb->rx_1519_to_2047_byte_packets =
 404                     stats.bb.rx_1519_to_2047_byte_packets;
 405                 p_bb->rx_2048_to_4095_byte_packets =
 406                     stats.bb.rx_2048_to_4095_byte_packets;
 407                 p_bb->rx_4096_to_9216_byte_packets =
 408                     stats.bb.rx_4096_to_9216_byte_packets;
 409                 p_bb->rx_9217_to_16383_byte_packets =
 410                     stats.bb.rx_9217_to_16383_byte_packets;
 411                 p_bb->tx_1519_to_2047_byte_packets =
 412                     stats.bb.tx_1519_to_2047_byte_packets;
 413                 p_bb->tx_2048_to_4095_byte_packets =
 414                     stats.bb.tx_2048_to_4095_byte_packets;
 415                 p_bb->tx_4096_to_9216_byte_packets =
 416                     stats.bb.tx_4096_to_9216_byte_packets;
 417                 p_bb->tx_9217_to_16383_byte_packets =
 418                     stats.bb.tx_9217_to_16383_byte_packets;
 419                 p_bb->tx_lpi_entry_count = stats.bb.tx_lpi_entry_count;
 420                 p_bb->tx_total_collisions = stats.bb.tx_total_collisions;
 421         } else {
 422                 struct qede_stats_ah *p_ah = &edev->stats.ah;
 423
 424                 p_ah->rx_1519_to_max_byte_packets =
 425                     stats.ah.rx_1519_to_max_byte_packets;
 426                 p_ah->tx_1519_to_max_byte_packets =
 427                     stats.ah.tx_1519_to_max_byte_packets;
 428         }
 429 }
 430
 431 static void qede_get_stats64(struct net_device *dev,
 432                              struct rtnl_link_stats64 *stats)
 433 {
 434         struct qede_dev *edev = netdev_priv(dev);
 435         struct qede_stats_common *p_common;
 436
 437         qede_fill_by_demand_stats(edev);
 438         p_common = &edev->stats.common;
 439
 440         stats->rx_packets = p_common->rx_ucast_pkts + p_common->rx_mcast_pkts +
 441                             p_common->rx_bcast_pkts;
 442         stats->tx_packets = p_common->tx_ucast_pkts + p_common->tx_mcast_pkts +
 443                             p_common->tx_bcast_pkts;
 444
 445         stats->rx_bytes = p_common->rx_ucast_bytes + p_common->rx_mcast_bytes +
 446                           p_common->rx_bcast_bytes;
 447         stats->tx_bytes = p_common->tx_ucast_bytes + p_common->tx_mcast_bytes +
 448                           p_common->tx_bcast_bytes;
 449
 450         stats->tx_errors = p_common->tx_err_drop_pkts;
 451         stats->multicast = p_common->rx_mcast_pkts + p_common->rx_bcast_pkts;
 452
 453         stats->rx_fifo_errors = p_common->no_buff_discards;
 454
 455         if (QEDE_IS_BB(edev))
 456                 stats->collisions = edev->stats.bb.tx_total_collisions;
 457         stats->rx_crc_errors = p_common->rx_crc_errors;
 458         stats->rx_frame_errors = p_common->rx_align_errors;
 459 }
 460
 461 #ifdef CONFIG_QED_SRIOV
 462 static int qede_get_vf_config(struct net_device *dev, int vfidx,
 463                               struct ifla_vf_info *ivi)
 464 {
 465         struct qede_dev *edev = netdev_priv(dev);
 466
 467         if (!edev->ops)
 468                 return -EINVAL;
 469
 470         return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
 471 }
 472
 473 static int qede_set_vf_rate(struct net_device *dev, int vfidx,
 474                             int min_tx_rate, int max_tx_rate)
 475 {
 476         struct qede_dev *edev = netdev_priv(dev);
 477
 478         return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
 479                                         max_tx_rate);
 480 }
 481
 482 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
 483 {
 484         struct qede_dev *edev = netdev_priv(dev);
 485
 486         if (!edev->ops)
 487                 return -EINVAL;
 488
 489         return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
 490 }
 491
 492 static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
 493                                   int link_state)
 494 {
 495         struct qede_dev *edev = netdev_priv(dev);
 496
 497         if (!edev->ops)
 498                 return -EINVAL;
 499
 500         return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
 501 }
 502
 503 static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
 504 {
 505         struct qede_dev *edev = netdev_priv(dev);
 506
 507         if (!edev->ops)
 508                 return -EINVAL;
 509
 510         return edev->ops->iov->set_trust(edev->cdev, vfidx, setting);
 511 }
 512 #endif
 513
 514 static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 515 {
 516         struct qede_dev *edev = netdev_priv(dev);
 517
 518         if (!netif_running(dev))
 519                 return -EAGAIN;
 520
 521         switch (cmd) {
 522         case SIOCSHWTSTAMP:
 523                 return qede_ptp_hw_ts(edev, ifr);
 524         default:
 525                 DP_VERBOSE(edev, QED_MSG_DEBUG,
 526                            "default IOCTL cmd 0x%x\n", cmd);
 527                 return -EOPNOTSUPP;
 528         }
 529
 530         return 0;
 531 }
 532
 533 static const struct net_device_ops qede_netdev_ops = {
 534         .ndo_open = qede_open,
 535         .ndo_stop = qede_close,
 536         .ndo_start_xmit = qede_start_xmit,
 537         .ndo_set_rx_mode = qede_set_rx_mode,
 538         .ndo_set_mac_address = qede_set_mac_addr,
 539         .ndo_validate_addr = eth_validate_addr,
 540         .ndo_change_mtu = qede_change_mtu,
 541         .ndo_do_ioctl = qede_ioctl,
 542 #ifdef CONFIG_QED_SRIOV
 543         .ndo_set_vf_mac = qede_set_vf_mac,
 544         .ndo_set_vf_vlan = qede_set_vf_vlan,
 545         .ndo_set_vf_trust = qede_set_vf_trust,
 546 #endif
 547         .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 548         .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 549         .ndo_set_features = qede_set_features,
 550         .ndo_get_stats64 = qede_get_stats64,
 551 #ifdef CONFIG_QED_SRIOV
 552         .ndo_set_vf_link_state = qede_set_vf_link_state,
 553         .ndo_set_vf_spoofchk = qede_set_vf_spoofchk,
 554         .ndo_get_vf_config = qede_get_vf_config,
 555         .ndo_set_vf_rate = qede_set_vf_rate,
 556 #endif
 557         .ndo_udp_tunnel_add = qede_udp_tunnel_add,
 558         .ndo_udp_tunnel_del = qede_udp_tunnel_del,
 559         .ndo_features_check = qede_features_check,
 560         .ndo_xdp = qede_xdp,
 561 #ifdef CONFIG_RFS_ACCEL
 562         .ndo_rx_flow_steer = qede_rx_flow_steer,
 563 #endif
 564 };
 565
 566 static const struct net_device_ops qede_netdev_vf_ops = {
 567         .ndo_open = qede_open,
 568         .ndo_stop = qede_close,
 569         .ndo_start_xmit = qede_start_xmit,
 570         .ndo_set_rx_mode = qede_set_rx_mode,
 571         .ndo_set_mac_address = qede_set_mac_addr,
 572         .ndo_validate_addr = eth_validate_addr,
 573         .ndo_change_mtu = qede_change_mtu,
 574         .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 575         .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 576         .ndo_set_features = qede_set_features,
 577         .ndo_get_stats64 = qede_get_stats64,
 578         .ndo_udp_tunnel_add = qede_udp_tunnel_add,
 579         .ndo_udp_tunnel_del = qede_udp_tunnel_del,
 580         .ndo_features_check = qede_features_check,
 581 };
 582
 583 /* -------------------------------------------------------------------------
 584  * START OF PROBE / REMOVE
 585  * -------------------------------------------------------------------------
 586  */
 587
 588 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
 589                                             struct pci_dev *pdev,
 590                                             struct qed_dev_eth_info *info,
 591                                             u32 dp_module, u8 dp_level)
 592 {
 593         struct net_device *ndev;
 594         struct qede_dev *edev;
 595
 596         ndev = alloc_etherdev_mqs(sizeof(*edev),
 597                                   info->num_queues, info->num_queues);
 598         if (!ndev) {
 599                 pr_err("etherdev allocation failed\n");
 600                 return NULL;
 601         }
 602
 603         edev = netdev_priv(ndev);
 604         edev->ndev = ndev;
 605         edev->cdev = cdev;
 606         edev->pdev = pdev;
 607         edev->dp_module = dp_module;
 608         edev->dp_level = dp_level;
 609         edev->ops = qed_ops;
 610         edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
 611         edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
 612
 613         DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n",
 614                 info->num_queues, info->num_queues);
 615
 616         SET_NETDEV_DEV(ndev, &pdev->dev);
 617
 618         memset(&edev->stats, 0, sizeof(edev->stats));
 619         memcpy(&edev->dev_info, info, sizeof(*info));
 620
 621         /* As ethtool doesn't have the ability to show WoL behavior as
 622          * 'default', if device supports it declare it's enabled.
 623          */
 624         if (edev->dev_info.common.wol_support)
 625                 edev->wol_enabled = true;
 626
 627         INIT_LIST_HEAD(&edev->vlan_list);
 628
 629         return edev;
 630 }
 631
 632 static void qede_init_ndev(struct qede_dev *edev)
 633 {
 634         struct net_device *ndev = edev->ndev;
 635         struct pci_dev *pdev = edev->pdev;
 636         bool udp_tunnel_enable = false;
 637         netdev_features_t hw_features;
 638
 639         pci_set_drvdata(pdev, ndev);
 640
 641         ndev->mem_start = edev->dev_info.common.pci_mem_start;
 642         ndev->base_addr = ndev->mem_start;
 643         ndev->mem_end = edev->dev_info.common.pci_mem_end;
 644         ndev->irq = edev->dev_info.common.pci_irq;
 645
 646         ndev->watchdog_timeo = TX_TIMEOUT;
 647
 648         if (IS_VF(edev))
 649                 ndev->netdev_ops = &qede_netdev_vf_ops;
 650         else
 651                 ndev->netdev_ops = &qede_netdev_ops;
 652
 653         qede_set_ethtool_ops(ndev);
 654
 655         ndev->priv_flags |= IFF_UNICAST_FLT;
 656
 657         /* user-changeble features */
 658         hw_features = NETIF_F_GRO | NETIF_F_SG |
 659                       NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 660                       NETIF_F_TSO | NETIF_F_TSO6;
 661
 662         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1)
 663                 hw_features |= NETIF_F_NTUPLE;
 664
 665         if (edev->dev_info.common.vxlan_enable ||
 666             edev->dev_info.common.geneve_enable)
 667                 udp_tunnel_enable = true;
 668
 669         if (udp_tunnel_enable || edev->dev_info.common.gre_enable) {
 670                 hw_features |= NETIF_F_TSO_ECN;
 671                 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 672                                         NETIF_F_SG | NETIF_F_TSO |
 673                                         NETIF_F_TSO_ECN | NETIF_F_TSO6 |
 674                                         NETIF_F_RXCSUM;
 675         }
 676
 677         if (udp_tunnel_enable) {
 678                 hw_features |= (NETIF_F_GSO_UDP_TUNNEL |
 679                                 NETIF_F_GSO_UDP_TUNNEL_CSUM);
 680                 ndev->hw_enc_features |= (NETIF_F_GSO_UDP_TUNNEL |
 681                                           NETIF_F_GSO_UDP_TUNNEL_CSUM);
 682         }
 683
 684         if (edev->dev_info.common.gre_enable) {
 685                 hw_features |= (NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM);
 686                 ndev->hw_enc_features |= (NETIF_F_GSO_GRE |
 687                                           NETIF_F_GSO_GRE_CSUM);
 688         }
 689
 690         ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 691                               NETIF_F_HIGHDMA;
 692         ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 693                          NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
 694                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
 695
 696         ndev->hw_features = hw_features;
 697
 698         /* MTU range: 46 - 9600 */
 699         ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 700         ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;
 701
 702         /* Set network device HW mac */
 703         ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
 704
 705         ndev->mtu = edev->dev_info.common.mtu;
 706 }
 707
 708 /* This function converts from 32b param to two params of level and module
 709  * Input 32b decoding:
 710  * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
 711  * 'happy' flow, e.g. memory allocation failed.
 712  * b30 - enable all INFO prints. INFO prints are for major steps in the flow
 713  * and provide important parameters.
 714  * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
 715  * module. VERBOSE prints are for tracking the specific flow in low level.
 716  *
 717  * Notice that the level should be that of the lowest required logs.
 718  */
 719 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
 720 {
 721         *p_dp_level = QED_LEVEL_NOTICE;
 722         *p_dp_module = 0;
 723
 724         if (debug & QED_LOG_VERBOSE_MASK) {
 725                 *p_dp_level = QED_LEVEL_VERBOSE;
 726                 *p_dp_module = (debug & 0x3FFFFFFF);
 727         } else if (debug & QED_LOG_INFO_MASK) {
 728                 *p_dp_level = QED_LEVEL_INFO;
 729         } else if (debug & QED_LOG_NOTICE_MASK) {
 730                 *p_dp_level = QED_LEVEL_NOTICE;
 731         }
 732 }
 733
 734 static void qede_free_fp_array(struct qede_dev *edev)
 735 {
 736         if (edev->fp_array) {
 737                 struct qede_fastpath *fp;
 738                 int i;
 739
 740                 for_each_queue(i) {
 741                         fp = &edev->fp_array[i];
 742
 743                         kfree(fp->sb_info);
 744                         kfree(fp->rxq);
 745                         kfree(fp->xdp_tx);
 746                         kfree(fp->txq);
 747                 }
 748                 kfree(edev->fp_array);
 749         }
 750
 751         edev->num_queues = 0;
 752         edev->fp_num_tx = 0;
 753         edev->fp_num_rx = 0;
 754 }
 755
 756 static int qede_alloc_fp_array(struct qede_dev *edev)
 757 {
 758         u8 fp_combined, fp_rx = edev->fp_num_rx;
 759         struct qede_fastpath *fp;
 760         int i;
 761
 762         edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
 763                                  sizeof(*edev->fp_array), GFP_KERNEL);
 764         if (!edev->fp_array) {
 765                 DP_NOTICE(edev, "fp array allocation failed\n");
 766                 goto err;
 767         }
 768
 769         fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;
 770
 771         /* Allocate the FP elements for Rx queues followed by combined and then
 772          * the Tx. This ordering should be maintained so that the respective
 773          * queues (Rx or Tx) will be together in the fastpath array and the
 774          * associated ids will be sequential.
 775          */
 776         for_each_queue(i) {
 777                 fp = &edev->fp_array[i];
 778
 779                 fp->sb_info = kzalloc(sizeof(*fp->sb_info), GFP_KERNEL);
 780                 if (!fp->sb_info) {
 781                         DP_NOTICE(edev, "sb info struct allocation failed\n");
 782                         goto err;
 783                 }
 784
 785                 if (fp_rx) {
 786                         fp->type = QEDE_FASTPATH_RX;
 787                         fp_rx--;
 788                 } else if (fp_combined) {
 789                         fp->type = QEDE_FASTPATH_COMBINED;
 790                         fp_combined--;
 791                 } else {
 792                         fp->type = QEDE_FASTPATH_TX;
 793                 }
 794
 795                 if (fp->type & QEDE_FASTPATH_TX) {
 796                         fp->txq = kzalloc(sizeof(*fp->txq), GFP_KERNEL);
 797                         if (!fp->txq)
 798                                 goto err;
 799                 }
 800
 801                 if (fp->type & QEDE_FASTPATH_RX) {
 802                         fp->rxq = kzalloc(sizeof(*fp->rxq), GFP_KERNEL);
 803                         if (!fp->rxq)
 804                                 goto err;
 805
 806                         if (edev->xdp_prog) {
 807                                 fp->xdp_tx = kzalloc(sizeof(*fp->xdp_tx),
 808                                                      GFP_KERNEL);
 809                                 if (!fp->xdp_tx)
 810                                         goto err;
 811                                 fp->type |= QEDE_FASTPATH_XDP;
 812                         }
 813                 }
 814         }
 815
 816         return 0;
 817 err:
 818         qede_free_fp_array(edev);
 819         return -ENOMEM;
 820 }
 821
 822 static void qede_sp_task(struct work_struct *work)
 823 {
 824         struct qede_dev *edev = container_of(work, struct qede_dev,
 825                                              sp_task.work);
 826
 827         __qede_lock(edev);
 828
 829         if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
 830                 if (edev->state == QEDE_STATE_OPEN)
 831                         qede_config_rx_mode(edev->ndev);
 832
 833 #ifdef CONFIG_RFS_ACCEL
 834         if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) {
 835                 if (edev->state == QEDE_STATE_OPEN)
 836                         qede_process_arfs_filters(edev, false);
 837         }
 838 #endif
 839         __qede_unlock(edev);
 840 }
 841
 842 static void qede_update_pf_params(struct qed_dev *cdev)
 843 {
 844         struct qed_pf_params pf_params;
 845
 846         /* 64 rx + 64 tx + 64 XDP */
 847         memset(&pf_params, 0, sizeof(struct qed_pf_params));
 848         pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * 3;
 849 #ifdef CONFIG_RFS_ACCEL
 850         pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR;
 851 #endif
 852         qed_ops->common->update_pf_params(cdev, &pf_params);
 853 }
 854
 855 enum qede_probe_mode {
 856         QEDE_PROBE_NORMAL,
 857 };
 858
 859 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 860                         bool is_vf, enum qede_probe_mode mode)
 861 {
 862         struct qed_probe_params probe_params;
 863         struct qed_slowpath_params sp_params;
 864         struct qed_dev_eth_info dev_info;
 865         struct qede_dev *edev;
 866         struct qed_dev *cdev;
 867         int rc;
 868
 869         if (unlikely(dp_level & QED_LEVEL_INFO))
 870                 pr_notice("Starting qede probe\n");
 871
 872         memset(&probe_params, 0, sizeof(probe_params));
 873         probe_params.protocol = QED_PROTOCOL_ETH;
 874         probe_params.dp_module = dp_module;
 875         probe_params.dp_level = dp_level;
 876         probe_params.is_vf = is_vf;
 877         cdev = qed_ops->common->probe(pdev, &probe_params);
 878         if (!cdev) {
 879                 rc = -ENODEV;
 880                 goto err0;
 881         }
 882
 883         qede_update_pf_params(cdev);
 884
 885         /* Start the Slowpath-process */
 886         memset(&sp_params, 0, sizeof(sp_params));
 887         sp_params.int_mode = QED_INT_MODE_MSIX;
 888         sp_params.drv_major = QEDE_MAJOR_VERSION;
 889         sp_params.drv_minor = QEDE_MINOR_VERSION;
 890         sp_params.drv_rev = QEDE_REVISION_VERSION;
 891         sp_params.drv_eng = QEDE_ENGINEERING_VERSION;
 892         strlcpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
 893         rc = qed_ops->common->slowpath_start(cdev, &sp_params);
 894         if (rc) {
 895                 pr_notice("Cannot start slowpath\n");
 896                 goto err1;
 897         }
 898
 899         /* Learn information crucial for qede to progress */
 900         rc = qed_ops->fill_dev_info(cdev, &dev_info);
 901         if (rc)
 902                 goto err2;
 903
 904         edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
 905                                    dp_level);
 906         if (!edev) {
 907                 rc = -ENOMEM;
 908                 goto err2;
 909         }
 910
 911         if (is_vf)
 912                 edev->flags |= QEDE_FLAG_IS_VF;
 913
 914         qede_init_ndev(edev);
 915
 916         rc = qede_roce_dev_add(edev);
 917         if (rc)
 918                 goto err3;
 919
 920         /* Prepare the lock prior to the registeration of the netdev,
 921          * as once it's registered we might reach flows requiring it
 922          * [it's even possible to reach a flow needing it directly
 923          * from there, although it's unlikely].
 924          */
 925         INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
 926         mutex_init(&edev->qede_lock);
 927         rc = register_netdev(edev->ndev);
 928         if (rc) {
 929                 DP_NOTICE(edev, "Cannot register net-device\n");
 930                 goto err4;
 931         }
 932
 933         edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
 934
 935         /* PTP not supported on VFs */
 936         if (!is_vf)
 937                 qede_ptp_enable(edev, true);
 938
 939         edev->ops->register_ops(cdev, &qede_ll_ops, edev);
 940
 941 #ifdef CONFIG_DCB
 942         if (!IS_VF(edev))
 943                 qede_set_dcbnl_ops(edev->ndev);
 944 #endif
 945
 946         edev->rx_copybreak = QEDE_RX_HDR_SIZE;
 947
 948         DP_INFO(edev, "Ending successfully qede probe\n");
 949
 950         return 0;
 951
 952 err4:
 953         qede_roce_dev_remove(edev);
 954 err3:
 955         free_netdev(edev->ndev);
 956 err2:
 957         qed_ops->common->slowpath_stop(cdev);
 958 err1:
 959         qed_ops->common->remove(cdev);
 960 err0:
 961         return rc;
 962 }
 963
 964 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 965 {
 966         bool is_vf = false;
 967         u32 dp_module = 0;
 968         u8 dp_level = 0;
 969
 970         switch ((enum qede_pci_private)id->driver_data) {
 971         case QEDE_PRIVATE_VF:
 972                 if (debug & QED_LOG_VERBOSE_MASK)
 973                         dev_err(&pdev->dev, "Probing a VF\n");
 974                 is_vf = true;
 975                 break;
 976         default:
 977                 if (debug & QED_LOG_VERBOSE_MASK)
 978                         dev_err(&pdev->dev, "Probing a PF\n");
 979         }
 980
 981         qede_config_debug(debug, &dp_module, &dp_level);
 982
 983         return __qede_probe(pdev, dp_module, dp_level, is_vf,
 984                             QEDE_PROBE_NORMAL);
 985 }
 986
 987 enum qede_remove_mode {
 988         QEDE_REMOVE_NORMAL,
 989 };
 990
 991 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
 992 {
 993         struct net_device *ndev = pci_get_drvdata(pdev);
 994         struct qede_dev *edev = netdev_priv(ndev);
 995         struct qed_dev *cdev = edev->cdev;
 996
 997         DP_INFO(edev, "Starting qede_remove\n");
 998
 999         unregister_netdev(ndev);
1000         cancel_delayed_work_sync(&edev->sp_task);
1001
1002         qede_ptp_disable(edev);
1003
1004         qede_roce_dev_remove(edev);
1005
1006         edev->ops->common->set_power_state(cdev, PCI_D0);
1007
1008         pci_set_drvdata(pdev, NULL);
1009
1010         /* Release edev's reference to XDP's bpf if such exist */
1011         if (edev->xdp_prog)
1012                 bpf_prog_put(edev->xdp_prog);
1013
1014         /* Use global ops since we've freed edev */
1015         qed_ops->common->slowpath_stop(cdev);
1016         if (system_state == SYSTEM_POWER_OFF)
1017                 return;
1018         qed_ops->common->remove(cdev);
1019
1020         /* Since this can happen out-of-sync with other flows,
1021          * don't release the netdevice until after slowpath stop
1022          * has been called to guarantee various other contexts
1023          * [e.g., QED register callbacks] won't break anything when
1024          * accessing the netdevice.
1025          */
1026          free_netdev(ndev);
1027
1028         dev_info(&pdev->dev, "Ending qede_remove successfully\n");
1029 }
1030
1031 static void qede_remove(struct pci_dev *pdev)
1032 {
1033         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1034 }
1035
1036 static void qede_shutdown(struct pci_dev *pdev)
1037 {
1038         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1039 }
1040
1041 /* -------------------------------------------------------------------------
1042  * START OF LOAD / UNLOAD
1043  * -------------------------------------------------------------------------
1044  */
1045
1046 static int qede_set_num_queues(struct qede_dev *edev)
1047 {
1048         int rc;
1049         u16 rss_num;
1050
1051         /* Setup queues according to possible resources*/
1052         if (edev->req_queues)
1053                 rss_num = edev->req_queues;
1054         else
1055                 rss_num = netif_get_num_default_rss_queues() *
1056                           edev->dev_info.common.num_hwfns;
1057
1058         rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
1059
1060         rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
1061         if (rc > 0) {
1062                 /* Managed to request interrupts for our queues */
1063                 edev->num_queues = rc;
1064                 DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
1065                         QEDE_QUEUE_CNT(edev), rss_num);
1066                 rc = 0;
1067         }
1068
1069         edev->fp_num_tx = edev->req_num_tx;
1070         edev->fp_num_rx = edev->req_num_rx;
1071
1072         return rc;
1073 }
1074
1075 static void qede_free_mem_sb(struct qede_dev *edev,
1076                              struct qed_sb_info *sb_info)
1077 {
1078         if (sb_info->sb_virt)
1079                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
1080                                   (void *)sb_info->sb_virt, sb_info->sb_phys);
1081 }
1082
1083 /* This function allocates fast-path status block memory */
1084 static int qede_alloc_mem_sb(struct qede_dev *edev,
1085                              struct qed_sb_info *sb_info, u16 sb_id)
1086 {
1087         struct status_block *sb_virt;
1088         dma_addr_t sb_phys;
1089         int rc;
1090
1091         sb_virt = dma_alloc_coherent(&edev->pdev->dev,
1092                                      sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
1093         if (!sb_virt) {
1094                 DP_ERR(edev, "Status block allocation failed\n");
1095                 return -ENOMEM;
1096         }
1097
1098         rc = edev->ops->common->sb_init(edev->cdev, sb_info,
1099                                         sb_virt, sb_phys, sb_id,
1100                                         QED_SB_TYPE_L2_QUEUE);
1101         if (rc) {
1102                 DP_ERR(edev, "Status block initialization failed\n");
1103                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
1104                                   sb_virt, sb_phys);
1105                 return rc;
1106         }
1107
1108         return 0;
1109 }
1110
1111 static void qede_free_rx_buffers(struct qede_dev *edev,
1112                                  struct qede_rx_queue *rxq)
1113 {
1114         u16 i;
1115
1116         for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
1117                 struct sw_rx_data *rx_buf;
1118                 struct page *data;
1119
1120                 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
1121                 data = rx_buf->data;
1122
1123                 dma_unmap_page(&edev->pdev->dev,
1124                                rx_buf->mapping, PAGE_SIZE, rxq->data_direction);
1125
1126                 rx_buf->data = NULL;
1127                 __free_page(data);
1128         }
1129 }
1130
1131 static void qede_free_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
1132 {
1133         int i;
1134
1135         if (edev->gro_disable)
1136                 return;
1137
1138         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1139                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1140                 struct sw_rx_data *replace_buf = &tpa_info->buffer;
1141
1142                 if (replace_buf->data) {
1143                         dma_unmap_page(&edev->pdev->dev,
1144                                        replace_buf->mapping,
1145                                        PAGE_SIZE, DMA_FROM_DEVICE);
1146                         __free_page(replace_buf->data);
1147                 }
1148         }
1149 }
1150
1151 static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1152 {
1153         qede_free_sge_mem(edev, rxq);
1154
1155         /* Free rx buffers */
1156         qede_free_rx_buffers(edev, rxq);
1157
1158         /* Free the parallel SW ring */
1159         kfree(rxq->sw_rx_ring);
1160
1161         /* Free the real RQ ring used by FW */
1162         edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
1163         edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
1164 }
1165
1166 static int qede_alloc_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
1167 {
1168         dma_addr_t mapping;
1169         int i;
1170
1171         /* Don't perform FW aggregations in case of XDP */
1172         if (edev->xdp_prog)
1173                 edev->gro_disable = 1;
1174
1175         if (edev->gro_disable)
1176                 return 0;
1177
1178         if (edev->ndev->mtu > PAGE_SIZE) {
1179                 edev->gro_disable = 1;
1180                 return 0;
1181         }
1182
1183         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1184                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1185                 struct sw_rx_data *replace_buf = &tpa_info->buffer;
1186
1187                 replace_buf->data = alloc_pages(GFP_ATOMIC, 0);
1188                 if (unlikely(!replace_buf->data)) {
1189                         DP_NOTICE(edev,
1190                                   "Failed to allocate TPA skb pool [replacement buffer]\n");
1191                         goto err;
1192                 }
1193
1194                 mapping = dma_map_page(&edev->pdev->dev, replace_buf->data, 0,
1195                                        PAGE_SIZE, DMA_FROM_DEVICE);
1196                 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
1197                         DP_NOTICE(edev,
1198                                   "Failed to map TPA replacement buffer\n");
1199                         goto err;
1200                 }
1201
1202                 replace_buf->mapping = mapping;
1203                 tpa_info->buffer.page_offset = 0;
1204                 tpa_info->buffer_mapping = mapping;
1205                 tpa_info->state = QEDE_AGG_STATE_NONE;
1206         }
1207
1208         return 0;
1209 err:
1210         qede_free_sge_mem(edev, rxq);
1211         edev->gro_disable = 1;
1212         return -ENOMEM;
1213 }
1214
1215 /* This function allocates all memory needed per Rx queue */
1216 static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1217 {
1218         int i, rc, size;
1219
1220         rxq->num_rx_buffers = edev->q_num_rx_buffers;
1221
1222         rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;
1223         rxq->rx_headroom = edev->xdp_prog ? XDP_PACKET_HEADROOM : 0;
1224
1225         /* Make sure that the headroom and  payload fit in a single page */
1226         if (rxq->rx_buf_size + rxq->rx_headroom > PAGE_SIZE)
1227                 rxq->rx_buf_size = PAGE_SIZE - rxq->rx_headroom;
1228
1229         /* Segment size to spilt a page in multiple equal parts,
1230          * unless XDP is used in which case we'd use the entire page.
1231          */
1232         if (!edev->xdp_prog)
1233                 rxq->rx_buf_seg_size = roundup_pow_of_two(rxq->rx_buf_size);
1234         else
1235                 rxq->rx_buf_seg_size = PAGE_SIZE;
1236
1237         /* Allocate the parallel driver ring for Rx buffers */
1238         size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
1239         rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
1240         if (!rxq->sw_rx_ring) {
1241                 DP_ERR(edev, "Rx buffers ring allocation failed\n");
1242                 rc = -ENOMEM;
1243                 goto err;
1244         }
1245
1246         /* Allocate FW Rx ring  */
1247         rc = edev->ops->common->chain_alloc(edev->cdev,
1248                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1249                                             QED_CHAIN_MODE_NEXT_PTR,
1250                                             QED_CHAIN_CNT_TYPE_U16,
1251                                             RX_RING_SIZE,
1252                                             sizeof(struct eth_rx_bd),
1253                                             &rxq->rx_bd_ring);
1254
1255         if (rc)
1256                 goto err;
1257
1258         /* Allocate FW completion ring */
1259         rc = edev->ops->common->chain_alloc(edev->cdev,
1260                                             QED_CHAIN_USE_TO_CONSUME,
1261                                             QED_CHAIN_MODE_PBL,
1262                                             QED_CHAIN_CNT_TYPE_U16,
1263                                             RX_RING_SIZE,
1264                                             sizeof(union eth_rx_cqe),
1265                                             &rxq->rx_comp_ring);
1266         if (rc)
1267                 goto err;
1268
1269         /* Allocate buffers for the Rx ring */
1270         rxq->filled_buffers = 0;
1271         for (i = 0; i < rxq->num_rx_buffers; i++) {
1272                 rc = qede_alloc_rx_buffer(rxq, false);
1273                 if (rc) {
1274                         DP_ERR(edev,
1275                                "Rx buffers allocation failed at index %d\n", i);
1276                         goto err;
1277                 }
1278         }
1279
1280         rc = qede_alloc_sge_mem(edev, rxq);
1281 err:
1282         return rc;
1283 }
1284
1285 static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1286 {
1287         /* Free the parallel SW ring */
1288         if (txq->is_xdp)
1289                 kfree(txq->sw_tx_ring.xdp);
1290         else
1291                 kfree(txq->sw_tx_ring.skbs);
1292
1293         /* Free the real RQ ring used by FW */
1294         edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
1295 }
1296
1297 /* This function allocates all memory needed per Tx queue */
1298 static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1299 {
1300         union eth_tx_bd_types *p_virt;
1301         int size, rc;
1302
1303         txq->num_tx_buffers = edev->q_num_tx_buffers;
1304
1305         /* Allocate the parallel driver ring for Tx buffers */
1306         if (txq->is_xdp) {
1307                 size = sizeof(*txq->sw_tx_ring.xdp) * txq->num_tx_buffers;
1308                 txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL);
1309                 if (!txq->sw_tx_ring.xdp)
1310                         goto err;
1311         } else {
1312                 size = sizeof(*txq->sw_tx_ring.skbs) * txq->num_tx_buffers;
1313                 txq->sw_tx_ring.skbs = kzalloc(size, GFP_KERNEL);
1314                 if (!txq->sw_tx_ring.skbs)
1315                         goto err;
1316         }
1317
1318         rc = edev->ops->common->chain_alloc(edev->cdev,
1319                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1320                                             QED_CHAIN_MODE_PBL,
1321                                             QED_CHAIN_CNT_TYPE_U16,
1322                                             txq->num_tx_buffers,
1323                                             sizeof(*p_virt), &txq->tx_pbl);
1324         if (rc)
1325                 goto err;
1326
1327         return 0;
1328
1329 err:
1330         qede_free_mem_txq(edev, txq);
1331         return -ENOMEM;
1332 }
1333
1334 /* This function frees all memory of a single fp */
1335 static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1336 {
1337         qede_free_mem_sb(edev, fp->sb_info);
1338
1339         if (fp->type & QEDE_FASTPATH_RX)
1340                 qede_free_mem_rxq(edev, fp->rxq);
1341
1342         if (fp->type & QEDE_FASTPATH_XDP)
1343                 qede_free_mem_txq(edev, fp->xdp_tx);
1344
1345         if (fp->type & QEDE_FASTPATH_TX)
1346                 qede_free_mem_txq(edev, fp->txq);
1347 }
1348
1349 /* This function allocates all memory needed for a single fp (i.e. an entity
1350  * which contains status block, one rx queue and/or multiple per-TC tx queues.
1351  */
1352 static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1353 {
1354         int rc = 0;
1355
1356         rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
1357         if (rc)
1358                 goto out;
1359
1360         if (fp->type & QEDE_FASTPATH_RX) {
1361                 rc = qede_alloc_mem_rxq(edev, fp->rxq);
1362                 if (rc)
1363                         goto out;
1364         }
1365
1366         if (fp->type & QEDE_FASTPATH_XDP) {
1367                 rc = qede_alloc_mem_txq(edev, fp->xdp_tx);
1368                 if (rc)
1369                         goto out;
1370         }
1371
1372         if (fp->type & QEDE_FASTPATH_TX) {
1373                 rc = qede_alloc_mem_txq(edev, fp->txq);
1374                 if (rc)
1375                         goto out;
1376         }
1377
1378 out:
1379         return rc;
1380 }
1381
1382 static void qede_free_mem_load(struct qede_dev *edev)
1383 {
1384         int i;
1385
1386         for_each_queue(i) {
1387                 struct qede_fastpath *fp = &edev->fp_array[i];
1388
1389                 qede_free_mem_fp(edev, fp);
1390         }
1391 }
1392
1393 /* This function allocates all qede memory at NIC load. */
1394 static int qede_alloc_mem_load(struct qede_dev *edev)
1395 {
1396         int rc = 0, queue_id;
1397
1398         for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
1399                 struct qede_fastpath *fp = &edev->fp_array[queue_id];
1400
1401                 rc = qede_alloc_mem_fp(edev, fp);
1402                 if (rc) {
1403                         DP_ERR(edev,
1404                                "Failed to allocate memory for fastpath - rss id = %d\n",
1405                                queue_id);
1406                         qede_free_mem_load(edev);
1407                         return rc;
1408                 }
1409         }
1410
1411         return 0;
1412 }
1413
1414 /* This function inits fp content and resets the SB, RXQ and TXQ structures */
1415 static void qede_init_fp(struct qede_dev *edev)
1416 {
1417         int queue_id, rxq_index = 0, txq_index = 0;
1418         struct qede_fastpath *fp;
1419
1420         for_each_queue(queue_id) {
1421                 fp = &edev->fp_array[queue_id];
1422
1423                 fp->edev = edev;
1424                 fp->id = queue_id;
1425
1426                 if (fp->type & QEDE_FASTPATH_XDP) {
1427                         fp->xdp_tx->index = QEDE_TXQ_IDX_TO_XDP(edev,
1428                                                                 rxq_index);
1429                         fp->xdp_tx->is_xdp = 1;
1430                 }
1431
1432                 if (fp->type & QEDE_FASTPATH_RX) {
1433                         fp->rxq->rxq_id = rxq_index++;
1434
1435                         /* Determine how to map buffers for this queue */
1436                         if (fp->type & QEDE_FASTPATH_XDP)
1437                                 fp->rxq->data_direction = DMA_BIDIRECTIONAL;
1438                         else
1439                                 fp->rxq->data_direction = DMA_FROM_DEVICE;
1440                         fp->rxq->dev = &edev->pdev->dev;
1441                 }
1442
1443                 if (fp->type & QEDE_FASTPATH_TX) {
1444                         fp->txq->index = txq_index++;
1445                         if (edev->dev_info.is_legacy)
1446                                 fp->txq->is_legacy = 1;
1447                         fp->txq->dev = &edev->pdev->dev;
1448                 }
1449
1450                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1451                          edev->ndev->name, queue_id);
1452         }
1453
1454         edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO);
1455 }
1456
1457 static int qede_set_real_num_queues(struct qede_dev *edev)
1458 {
1459         int rc = 0;
1460
1461         rc = netif_set_real_num_tx_queues(edev->ndev, QEDE_TSS_COUNT(edev));
1462         if (rc) {
1463                 DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
1464                 return rc;
1465         }
1466
1467         rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
1468         if (rc) {
1469                 DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
1470                 return rc;
1471         }
1472
1473         return 0;
1474 }
1475
1476 static void qede_napi_disable_remove(struct qede_dev *edev)
1477 {
1478         int i;
1479
1480         for_each_queue(i) {
1481                 napi_disable(&edev->fp_array[i].napi);
1482
1483                 netif_napi_del(&edev->fp_array[i].napi);
1484         }
1485 }
1486
1487 static void qede_napi_add_enable(struct qede_dev *edev)
1488 {
1489         int i;
1490
1491         /* Add NAPI objects */
1492         for_each_queue(i) {
1493                 netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
1494                                qede_poll, NAPI_POLL_WEIGHT);
1495                 napi_enable(&edev->fp_array[i].napi);
1496         }
1497 }
1498
1499 static void qede_sync_free_irqs(struct qede_dev *edev)
1500 {
1501         int i;
1502
1503         for (i = 0; i < edev->int_info.used_cnt; i++) {
1504                 if (edev->int_info.msix_cnt) {
1505                         synchronize_irq(edev->int_info.msix[i].vector);
1506                         free_irq(edev->int_info.msix[i].vector,
1507                                  &edev->fp_array[i]);
1508                 } else {
1509                         edev->ops->common->simd_handler_clean(edev->cdev, i);
1510                 }
1511         }
1512
1513         edev->int_info.used_cnt = 0;
1514 }
1515
1516 static int qede_req_msix_irqs(struct qede_dev *edev)
1517 {
1518         int i, rc;
1519
1520         /* Sanitize number of interrupts == number of prepared RSS queues */
1521         if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
1522                 DP_ERR(edev,
1523                        "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
1524                        QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
1525                 return -EINVAL;
1526         }
1527
1528         for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
1529 #ifdef CONFIG_RFS_ACCEL
1530                 struct qede_fastpath *fp = &edev->fp_array[i];
1531
1532                 if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) {
1533                         rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap,
1534                                               edev->int_info.msix[i].vector);
1535                         if (rc) {
1536                                 DP_ERR(edev, "Failed to add CPU rmap\n");
1537                                 qede_free_arfs(edev);
1538                         }
1539                 }
1540 #endif
1541                 rc = request_irq(edev->int_info.msix[i].vector,
1542                                  qede_msix_fp_int, 0, edev->fp_array[i].name,
1543                                  &edev->fp_array[i]);
1544                 if (rc) {
1545                         DP_ERR(edev, "Request fp %d irq failed\n", i);
1546                         qede_sync_free_irqs(edev);
1547                         return rc;
1548                 }
1549                 DP_VERBOSE(edev, NETIF_MSG_INTR,
1550                            "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
1551                            edev->fp_array[i].name, i,
1552                            &edev->fp_array[i]);
1553                 edev->int_info.used_cnt++;
1554         }
1555
1556         return 0;
1557 }
1558
1559 static void qede_simd_fp_handler(void *cookie)
1560 {
1561         struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
1562
1563         napi_schedule_irqoff(&fp->napi);
1564 }
1565
1566 static int qede_setup_irqs(struct qede_dev *edev)
1567 {
1568         int i, rc = 0;
1569
1570         /* Learn Interrupt configuration */
1571         rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
1572         if (rc)
1573                 return rc;
1574
1575         if (edev->int_info.msix_cnt) {
1576                 rc = qede_req_msix_irqs(edev);
1577                 if (rc)
1578                         return rc;
1579                 edev->ndev->irq = edev->int_info.msix[0].vector;
1580         } else {
1581                 const struct qed_common_ops *ops;
1582
1583                 /* qed should learn receive the RSS ids and callbacks */
1584                 ops = edev->ops->common;
1585                 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
1586                         ops->simd_handler_config(edev->cdev,
1587                                                  &edev->fp_array[i], i,
1588                                                  qede_simd_fp_handler);
1589                 edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
1590         }
1591         return 0;
1592 }
1593
1594 static int qede_drain_txq(struct qede_dev *edev,
1595                           struct qede_tx_queue *txq, bool allow_drain)
1596 {
1597         int rc, cnt = 1000;
1598
1599         while (txq->sw_tx_cons != txq->sw_tx_prod) {
1600                 if (!cnt) {
1601                         if (allow_drain) {
1602                                 DP_NOTICE(edev,
1603                                           "Tx queue[%d] is stuck, requesting MCP to drain\n",
1604                                           txq->index);
1605                                 rc = edev->ops->common->drain(edev->cdev);
1606                                 if (rc)
1607                                         return rc;
1608                                 return qede_drain_txq(edev, txq, false);
1609                         }
1610                         DP_NOTICE(edev,
1611                                   "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
1612                                   txq->index, txq->sw_tx_prod,
1613                                   txq->sw_tx_cons);
1614                         return -ENODEV;
1615                 }
1616                 cnt--;
1617                 usleep_range(1000, 2000);
1618                 barrier();
1619         }
1620
1621         /* FW finished processing, wait for HW to transmit all tx packets */
1622         usleep_range(1000, 2000);
1623
1624         return 0;
1625 }
1626
1627 static int qede_stop_txq(struct qede_dev *edev,
1628                          struct qede_tx_queue *txq, int rss_id)
1629 {
1630         return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle);
1631 }
1632
1633 static int qede_stop_queues(struct qede_dev *edev)
1634 {
1635         struct qed_update_vport_params *vport_update_params;
1636         struct qed_dev *cdev = edev->cdev;
1637         struct qede_fastpath *fp;
1638         int rc, i;
1639
1640         /* Disable the vport */
1641         vport_update_params = vzalloc(sizeof(*vport_update_params));
1642         if (!vport_update_params)
1643                 return -ENOMEM;
1644
1645         vport_update_params->vport_id = 0;
1646         vport_update_params->update_vport_active_flg = 1;
1647         vport_update_params->vport_active_flg = 0;
1648         vport_update_params->update_rss_flg = 0;
1649
1650         rc = edev->ops->vport_update(cdev, vport_update_params);
1651         vfree(vport_update_params);
1652
1653         if (rc) {
1654                 DP_ERR(edev, "Failed to update vport\n");
1655                 return rc;
1656         }
1657
1658         /* Flush Tx queues. If needed, request drain from MCP */
1659         for_each_queue(i) {
1660                 fp = &edev->fp_array[i];
1661
1662                 if (fp->type & QEDE_FASTPATH_TX) {
1663                         rc = qede_drain_txq(edev, fp->txq, true);
1664                         if (rc)
1665                                 return rc;
1666                 }
1667
1668                 if (fp->type & QEDE_FASTPATH_XDP) {
1669                         rc = qede_drain_txq(edev, fp->xdp_tx, true);
1670                         if (rc)
1671                                 return rc;
1672                 }
1673         }
1674
1675         /* Stop all Queues in reverse order */
1676         for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
1677                 fp = &edev->fp_array[i];
1678
1679                 /* Stop the Tx Queue(s) */
1680                 if (fp->type & QEDE_FASTPATH_TX) {
1681                         rc = qede_stop_txq(edev, fp->txq, i);
1682                         if (rc)
1683                                 return rc;
1684                 }
1685
1686                 /* Stop the Rx Queue */
1687                 if (fp->type & QEDE_FASTPATH_RX) {
1688                         rc = edev->ops->q_rx_stop(cdev, i, fp->rxq->handle);
1689                         if (rc) {
1690                                 DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
1691                                 return rc;
1692                         }
1693                 }
1694
1695                 /* Stop the XDP forwarding queue */
1696                 if (fp->type & QEDE_FASTPATH_XDP) {
1697                         rc = qede_stop_txq(edev, fp->xdp_tx, i);
1698                         if (rc)
1699                                 return rc;
1700
1701                         bpf_prog_put(fp->rxq->xdp_prog);
1702                 }
1703         }
1704
1705         /* Stop the vport */
1706         rc = edev->ops->vport_stop(cdev, 0);
1707         if (rc)
1708                 DP_ERR(edev, "Failed to stop VPORT\n");
1709
1710         return rc;
1711 }
1712
1713 static int qede_start_txq(struct qede_dev *edev,
1714                           struct qede_fastpath *fp,
1715                           struct qede_tx_queue *txq, u8 rss_id, u16 sb_idx)
1716 {
1717         dma_addr_t phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
1718         u32 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
1719         struct qed_queue_start_common_params params;
1720         struct qed_txq_start_ret_params ret_params;
1721         int rc;
1722
1723         memset(&params, 0, sizeof(params));
1724         memset(&ret_params, 0, sizeof(ret_params));
1725
1726         /* Let the XDP queue share the queue-zone with one of the regular txq.
1727          * We don't really care about its coalescing.
1728          */
1729         if (txq->is_xdp)
1730                 params.queue_id = QEDE_TXQ_XDP_TO_IDX(edev, txq);
1731         else
1732                 params.queue_id = txq->index;
1733
1734         params.sb = fp->sb_info->igu_sb_id;
1735         params.sb_idx = sb_idx;
1736
1737         rc = edev->ops->q_tx_start(edev->cdev, rss_id, &params, phys_table,
1738                                    page_cnt, &ret_params);
1739         if (rc) {
1740                 DP_ERR(edev, "Start TXQ #%d failed %d\n", txq->index, rc);
1741                 return rc;
1742         }
1743
1744         txq->doorbell_addr = ret_params.p_doorbell;
1745         txq->handle = ret_params.p_handle;
1746
1747         /* Determine the FW consumer address associated */
1748         txq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[sb_idx];
1749
1750         /* Prepare the doorbell parameters */
1751         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_DEST, DB_DEST_XCM);
1752         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
1753         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_VAL_SEL,
1754                   DQ_XCM_ETH_TX_BD_PROD_CMD);
1755         txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
1756
1757         return rc;
1758 }
1759
1760 static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
1761 {
1762         int vlan_removal_en = 1;
1763         struct qed_dev *cdev = edev->cdev;
1764         struct qed_dev_info *qed_info = &edev->dev_info.common;
1765         struct qed_update_vport_params *vport_update_params;
1766         struct qed_queue_start_common_params q_params;
1767         struct qed_start_vport_params start = {0};
1768         int rc, i;
1769
1770         if (!edev->num_queues) {
1771                 DP_ERR(edev,
1772                        "Cannot update V-VPORT as active as there are no Rx queues\n");
1773                 return -EINVAL;
1774         }
1775
1776         vport_update_params = vzalloc(sizeof(*vport_update_params));
1777         if (!vport_update_params)
1778                 return -ENOMEM;
1779
1780         start.handle_ptp_pkts = !!(edev->ptp);
1781         start.gro_enable = !edev->gro_disable;
1782         start.mtu = edev->ndev->mtu;
1783         start.vport_id = 0;
1784         start.drop_ttl0 = true;
1785         start.remove_inner_vlan = vlan_removal_en;
1786         start.clear_stats = clear_stats;
1787
1788         rc = edev->ops->vport_start(cdev, &start);
1789
1790         if (rc) {
1791                 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
1792                 goto out;
1793         }
1794
1795         DP_VERBOSE(edev, NETIF_MSG_IFUP,
1796                    "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
1797                    start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
1798
1799         for_each_queue(i) {
1800                 struct qede_fastpath *fp = &edev->fp_array[i];
1801                 dma_addr_t p_phys_table;
1802                 u32 page_cnt;
1803
1804                 if (fp->type & QEDE_FASTPATH_RX) {
1805                         struct qed_rxq_start_ret_params ret_params;
1806                         struct qede_rx_queue *rxq = fp->rxq;
1807                         __le16 *val;
1808
1809                         memset(&ret_params, 0, sizeof(ret_params));
1810                         memset(&q_params, 0, sizeof(q_params));
1811                         q_params.queue_id = rxq->rxq_id;
1812                         q_params.vport_id = 0;
1813                         q_params.sb = fp->sb_info->igu_sb_id;
1814                         q_params.sb_idx = RX_PI;
1815
1816                         p_phys_table =
1817                             qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
1818                         page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);
1819
1820                         rc = edev->ops->q_rx_start(cdev, i, &q_params,
1821                                                    rxq->rx_buf_size,
1822                                                    rxq->rx_bd_ring.p_phys_addr,
1823                                                    p_phys_table,
1824                                                    page_cnt, &ret_params);
1825                         if (rc) {
1826                                 DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
1827                                        rc);
1828                                 goto out;
1829                         }
1830
1831                         /* Use the return parameters */
1832                         rxq->hw_rxq_prod_addr = ret_params.p_prod;
1833                         rxq->handle = ret_params.p_handle;
1834
1835                         val = &fp->sb_info->sb_virt->pi_array[RX_PI];
1836                         rxq->hw_cons_ptr = val;
1837
1838                         qede_update_rx_prod(edev, rxq);
1839                 }
1840
1841                 if (fp->type & QEDE_FASTPATH_XDP) {
1842                         rc = qede_start_txq(edev, fp, fp->xdp_tx, i, XDP_PI);
1843                         if (rc)
1844                                 goto out;
1845
1846                         fp->rxq->xdp_prog = bpf_prog_add(edev->xdp_prog, 1);
1847                         if (IS_ERR(fp->rxq->xdp_prog)) {
1848                                 rc = PTR_ERR(fp->rxq->xdp_prog);
1849                                 fp->rxq->xdp_prog = NULL;
1850                                 goto out;
1851                         }
1852                 }
1853
1854                 if (fp->type & QEDE_FASTPATH_TX) {
1855                         rc = qede_start_txq(edev, fp, fp->txq, i, TX_PI(0));
1856                         if (rc)
1857                                 goto out;
1858                 }
1859         }
1860
1861         /* Prepare and send the vport enable */
1862         vport_update_params->vport_id = start.vport_id;
1863         vport_update_params->update_vport_active_flg = 1;
1864         vport_update_params->vport_active_flg = 1;
1865
1866         if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) &&
1867             qed_info->tx_switching) {
1868                 vport_update_params->update_tx_switching_flg = 1;
1869                 vport_update_params->tx_switching_flg = 1;
1870         }
1871
1872         qede_fill_rss_params(edev, &vport_update_params->rss_params,
1873                              &vport_update_params->update_rss_flg);
1874
1875         rc = edev->ops->vport_update(cdev, vport_update_params);
1876         if (rc)
1877                 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
1878
1879 out:
1880         vfree(vport_update_params);
1881         return rc;
1882 }
1883
1884 enum qede_unload_mode {
1885         QEDE_UNLOAD_NORMAL,
1886 };
1887
1888 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
1889                         bool is_locked)
1890 {
1891         struct qed_link_params link_params;
1892         int rc;
1893
1894         DP_INFO(edev, "Starting qede unload\n");
1895
1896         if (!is_locked)
1897                 __qede_lock(edev);
1898
1899         qede_roce_dev_event_close(edev);
1900         edev->state = QEDE_STATE_CLOSED;
1901
1902         /* Close OS Tx */
1903         netif_tx_disable(edev->ndev);
1904         netif_carrier_off(edev->ndev);
1905
1906         /* Reset the link */
1907         memset(&link_params, 0, sizeof(link_params));
1908         link_params.link_up = false;
1909         edev->ops->common->set_link(edev->cdev, &link_params);
1910         rc = qede_stop_queues(edev);
1911         if (rc) {
1912                 qede_sync_free_irqs(edev);
1913                 goto out;
1914         }
1915
1916         DP_INFO(edev, "Stopped Queues\n");
1917
1918         qede_vlan_mark_nonconfigured(edev);
1919         edev->ops->fastpath_stop(edev->cdev);
1920 #ifdef CONFIG_RFS_ACCEL
1921         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
1922                 qede_poll_for_freeing_arfs_filters(edev);
1923                 qede_free_arfs(edev);
1924         }
1925 #endif
1926         /* Release the interrupts */
1927         qede_sync_free_irqs(edev);
1928         edev->ops->common->set_fp_int(edev->cdev, 0);
1929
1930         qede_napi_disable_remove(edev);
1931
1932         qede_free_mem_load(edev);
1933         qede_free_fp_array(edev);
1934
1935 out:
1936         if (!is_locked)
1937                 __qede_unlock(edev);
1938         DP_INFO(edev, "Ending qede unload\n");
1939 }
1940
1941 enum qede_load_mode {
1942         QEDE_LOAD_NORMAL,
1943         QEDE_LOAD_RELOAD,
1944 };
1945
1946 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
1947                      bool is_locked)
1948 {
1949         struct qed_link_params link_params;
1950         int rc;
1951
1952         DP_INFO(edev, "Starting qede load\n");
1953
1954         if (!is_locked)
1955                 __qede_lock(edev);
1956
1957         rc = qede_set_num_queues(edev);
1958         if (rc)
1959                 goto out;
1960
1961         rc = qede_alloc_fp_array(edev);
1962         if (rc)
1963                 goto out;
1964
1965         qede_init_fp(edev);
1966
1967         rc = qede_alloc_mem_load(edev);
1968         if (rc)
1969                 goto err1;
1970         DP_INFO(edev, "Allocated %d Rx, %d Tx queues\n",
1971                 QEDE_RSS_COUNT(edev), QEDE_TSS_COUNT(edev));
1972
1973         rc = qede_set_real_num_queues(edev);
1974         if (rc)
1975                 goto err2;
1976
1977 #ifdef CONFIG_RFS_ACCEL
1978         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
1979                 rc = qede_alloc_arfs(edev);
1980                 if (rc)
1981                         DP_NOTICE(edev, "aRFS memory allocation failed\n");
1982         }
1983 #endif
1984         qede_napi_add_enable(edev);
1985         DP_INFO(edev, "Napi added and enabled\n");
1986
1987         rc = qede_setup_irqs(edev);
1988         if (rc)
1989                 goto err3;
1990         DP_INFO(edev, "Setup IRQs succeeded\n");
1991
1992         rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
1993         if (rc)
1994                 goto err4;
1995         DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
1996
1997         /* Add primary mac and set Rx filters */
1998         ether_addr_copy(edev->primary_mac, edev->ndev->dev_addr);
1999
2000         /* Program un-configured VLANs */
2001         qede_configure_vlan_filters(edev);
2002
2003         /* Ask for link-up using current configuration */
2004         memset(&link_params, 0, sizeof(link_params));
2005         link_params.link_up = true;
2006         edev->ops->common->set_link(edev->cdev, &link_params);
2007
2008         qede_roce_dev_event_open(edev);
2009
2010         edev->state = QEDE_STATE_OPEN;
2011
2012         DP_INFO(edev, "Ending successfully qede load\n");
2013
2014         goto out;
2015 err4:
2016         qede_sync_free_irqs(edev);
2017         memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
2018 err3:
2019         qede_napi_disable_remove(edev);
2020 err2:
2021         qede_free_mem_load(edev);
2022 err1:
2023         edev->ops->common->set_fp_int(edev->cdev, 0);
2024         qede_free_fp_array(edev);
2025         edev->num_queues = 0;
2026         edev->fp_num_tx = 0;
2027         edev->fp_num_rx = 0;
2028 out:
2029         if (!is_locked)
2030                 __qede_unlock(edev);
2031
2032         return rc;
2033 }
2034
2035 /* 'func' should be able to run between unload and reload assuming interface
2036  * is actually running, or afterwards in case it's currently DOWN.
2037  */
2038 void qede_reload(struct qede_dev *edev,
2039                  struct qede_reload_args *args, bool is_locked)
2040 {
2041         if (!is_locked)
2042                 __qede_lock(edev);
2043
2044         /* Since qede_lock is held, internal state wouldn't change even
2045          * if netdev state would start transitioning. Check whether current
2046          * internal configuration indicates device is up, then reload.
2047          */
2048         if (edev->state == QEDE_STATE_OPEN) {
2049                 qede_unload(edev, QEDE_UNLOAD_NORMAL, true);
2050                 if (args)
2051                         args->func(edev, args);
2052                 qede_load(edev, QEDE_LOAD_RELOAD, true);
2053
2054                 /* Since no one is going to do it for us, re-configure */
2055                 qede_config_rx_mode(edev->ndev);
2056         } else if (args) {
2057                 args->func(edev, args);
2058         }
2059
2060         if (!is_locked)
2061                 __qede_unlock(edev);
2062 }
2063
2064 /* called with rtnl_lock */
2065 static int qede_open(struct net_device *ndev)
2066 {
2067         struct qede_dev *edev = netdev_priv(ndev);
2068         int rc;
2069
2070         netif_carrier_off(ndev);
2071
2072         edev->ops->common->set_power_state(edev->cdev, PCI_D0);
2073
2074         rc = qede_load(edev, QEDE_LOAD_NORMAL, false);
2075         if (rc)
2076                 return rc;
2077
2078         udp_tunnel_get_rx_info(ndev);
2079
2080         edev->ops->common->update_drv_state(edev->cdev, true);
2081
2082         return 0;
2083 }
2084
2085 static int qede_close(struct net_device *ndev)
2086 {
2087         struct qede_dev *edev = netdev_priv(ndev);
2088
2089         qede_unload(edev, QEDE_UNLOAD_NORMAL, false);
2090
2091         edev->ops->common->update_drv_state(edev->cdev, false);
2092
2093         return 0;
2094 }
2095
2096 static void qede_link_update(void *dev, struct qed_link_output *link)
2097 {
2098         struct qede_dev *edev = dev;
2099
2100         if (!netif_running(edev->ndev)) {
2101                 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
2102                 return;
2103         }
2104
2105         if (link->link_up) {
2106                 if (!netif_carrier_ok(edev->ndev)) {
2107                         DP_NOTICE(edev, "Link is up\n");
2108                         netif_tx_start_all_queues(edev->ndev);
2109                         netif_carrier_on(edev->ndev);
2110                 }
2111         } else {
2112                 if (netif_carrier_ok(edev->ndev)) {
2113                         DP_NOTICE(edev, "Link is down\n");
2114                         netif_tx_disable(edev->ndev);
2115                         netif_carrier_off(edev->ndev);
2116                 }
2117         }
2118 }