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         INIT_LIST_HEAD(&edev->vlan_list);
 622
 623         return edev;
 624 }
 625
 626 static void qede_init_ndev(struct qede_dev *edev)
 627 {
 628         struct net_device *ndev = edev->ndev;
 629         struct pci_dev *pdev = edev->pdev;
 630         bool udp_tunnel_enable = false;
 631         netdev_features_t hw_features;
 632
 633         pci_set_drvdata(pdev, ndev);
 634
 635         ndev->mem_start = edev->dev_info.common.pci_mem_start;
 636         ndev->base_addr = ndev->mem_start;
 637         ndev->mem_end = edev->dev_info.common.pci_mem_end;
 638         ndev->irq = edev->dev_info.common.pci_irq;
 639
 640         ndev->watchdog_timeo = TX_TIMEOUT;
 641
 642         if (IS_VF(edev))
 643                 ndev->netdev_ops = &qede_netdev_vf_ops;
 644         else
 645                 ndev->netdev_ops = &qede_netdev_ops;
 646
 647         qede_set_ethtool_ops(ndev);
 648
 649         ndev->priv_flags |= IFF_UNICAST_FLT;
 650
 651         /* user-changeble features */
 652         hw_features = NETIF_F_GRO | NETIF_F_SG |
 653                       NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 654                       NETIF_F_TSO | NETIF_F_TSO6;
 655
 656         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1)
 657                 hw_features |= NETIF_F_NTUPLE;
 658
 659         if (edev->dev_info.common.vxlan_enable ||
 660             edev->dev_info.common.geneve_enable)
 661                 udp_tunnel_enable = true;
 662
 663         if (udp_tunnel_enable || edev->dev_info.common.gre_enable) {
 664                 hw_features |= NETIF_F_TSO_ECN;
 665                 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 666                                         NETIF_F_SG | NETIF_F_TSO |
 667                                         NETIF_F_TSO_ECN | NETIF_F_TSO6 |
 668                                         NETIF_F_RXCSUM;
 669         }
 670
 671         if (udp_tunnel_enable) {
 672                 hw_features |= (NETIF_F_GSO_UDP_TUNNEL |
 673                                 NETIF_F_GSO_UDP_TUNNEL_CSUM);
 674                 ndev->hw_enc_features |= (NETIF_F_GSO_UDP_TUNNEL |
 675                                           NETIF_F_GSO_UDP_TUNNEL_CSUM);
 676         }
 677
 678         if (edev->dev_info.common.gre_enable) {
 679                 hw_features |= (NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM);
 680                 ndev->hw_enc_features |= (NETIF_F_GSO_GRE |
 681                                           NETIF_F_GSO_GRE_CSUM);
 682         }
 683
 684         ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 685                               NETIF_F_HIGHDMA;
 686         ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 687                          NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
 688                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
 689
 690         ndev->hw_features = hw_features;
 691
 692         /* MTU range: 46 - 9600 */
 693         ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 694         ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;
 695
 696         /* Set network device HW mac */
 697         ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
 698
 699         ndev->mtu = edev->dev_info.common.mtu;
 700 }
 701
 702 /* This function converts from 32b param to two params of level and module
 703  * Input 32b decoding:
 704  * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
 705  * 'happy' flow, e.g. memory allocation failed.
 706  * b30 - enable all INFO prints. INFO prints are for major steps in the flow
 707  * and provide important parameters.
 708  * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
 709  * module. VERBOSE prints are for tracking the specific flow in low level.
 710  *
 711  * Notice that the level should be that of the lowest required logs.
 712  */
 713 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
 714 {
 715         *p_dp_level = QED_LEVEL_NOTICE;
 716         *p_dp_module = 0;
 717
 718         if (debug & QED_LOG_VERBOSE_MASK) {
 719                 *p_dp_level = QED_LEVEL_VERBOSE;
 720                 *p_dp_module = (debug & 0x3FFFFFFF);
 721         } else if (debug & QED_LOG_INFO_MASK) {
 722                 *p_dp_level = QED_LEVEL_INFO;
 723         } else if (debug & QED_LOG_NOTICE_MASK) {
 724                 *p_dp_level = QED_LEVEL_NOTICE;
 725         }
 726 }
 727
 728 static void qede_free_fp_array(struct qede_dev *edev)
 729 {
 730         if (edev->fp_array) {
 731                 struct qede_fastpath *fp;
 732                 int i;
 733
 734                 for_each_queue(i) {
 735                         fp = &edev->fp_array[i];
 736
 737                         kfree(fp->sb_info);
 738                         kfree(fp->rxq);
 739                         kfree(fp->xdp_tx);
 740                         kfree(fp->txq);
 741                 }
 742                 kfree(edev->fp_array);
 743         }
 744
 745         edev->num_queues = 0;
 746         edev->fp_num_tx = 0;
 747         edev->fp_num_rx = 0;
 748 }
 749
 750 static int qede_alloc_fp_array(struct qede_dev *edev)
 751 {
 752         u8 fp_combined, fp_rx = edev->fp_num_rx;
 753         struct qede_fastpath *fp;
 754         int i;
 755
 756         edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
 757                                  sizeof(*edev->fp_array), GFP_KERNEL);
 758         if (!edev->fp_array) {
 759                 DP_NOTICE(edev, "fp array allocation failed\n");
 760                 goto err;
 761         }
 762
 763         fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;
 764
 765         /* Allocate the FP elements for Rx queues followed by combined and then
 766          * the Tx. This ordering should be maintained so that the respective
 767          * queues (Rx or Tx) will be together in the fastpath array and the
 768          * associated ids will be sequential.
 769          */
 770         for_each_queue(i) {
 771                 fp = &edev->fp_array[i];
 772
 773                 fp->sb_info = kzalloc(sizeof(*fp->sb_info), GFP_KERNEL);
 774                 if (!fp->sb_info) {
 775                         DP_NOTICE(edev, "sb info struct allocation failed\n");
 776                         goto err;
 777                 }
 778
 779                 if (fp_rx) {
 780                         fp->type = QEDE_FASTPATH_RX;
 781                         fp_rx--;
 782                 } else if (fp_combined) {
 783                         fp->type = QEDE_FASTPATH_COMBINED;
 784                         fp_combined--;
 785                 } else {
 786                         fp->type = QEDE_FASTPATH_TX;
 787                 }
 788
 789                 if (fp->type & QEDE_FASTPATH_TX) {
 790                         fp->txq = kzalloc(sizeof(*fp->txq), GFP_KERNEL);
 791                         if (!fp->txq)
 792                                 goto err;
 793                 }
 794
 795                 if (fp->type & QEDE_FASTPATH_RX) {
 796                         fp->rxq = kzalloc(sizeof(*fp->rxq), GFP_KERNEL);
 797                         if (!fp->rxq)
 798                                 goto err;
 799
 800                         if (edev->xdp_prog) {
 801                                 fp->xdp_tx = kzalloc(sizeof(*fp->xdp_tx),
 802                                                      GFP_KERNEL);
 803                                 if (!fp->xdp_tx)
 804                                         goto err;
 805                                 fp->type |= QEDE_FASTPATH_XDP;
 806                         }
 807                 }
 808         }
 809
 810         return 0;
 811 err:
 812         qede_free_fp_array(edev);
 813         return -ENOMEM;
 814 }
 815
 816 static void qede_sp_task(struct work_struct *work)
 817 {
 818         struct qede_dev *edev = container_of(work, struct qede_dev,
 819                                              sp_task.work);
 820
 821         __qede_lock(edev);
 822
 823         if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
 824                 if (edev->state == QEDE_STATE_OPEN)
 825                         qede_config_rx_mode(edev->ndev);
 826
 827 #ifdef CONFIG_RFS_ACCEL
 828         if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) {
 829                 if (edev->state == QEDE_STATE_OPEN)
 830                         qede_process_arfs_filters(edev, false);
 831         }
 832 #endif
 833         __qede_unlock(edev);
 834 }
 835
 836 static void qede_update_pf_params(struct qed_dev *cdev)
 837 {
 838         struct qed_pf_params pf_params;
 839
 840         /* 64 rx + 64 tx + 64 XDP */
 841         memset(&pf_params, 0, sizeof(struct qed_pf_params));
 842         pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * 3;
 843 #ifdef CONFIG_RFS_ACCEL
 844         pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR;
 845 #endif
 846         qed_ops->common->update_pf_params(cdev, &pf_params);
 847 }
 848
 849 enum qede_probe_mode {
 850         QEDE_PROBE_NORMAL,
 851 };
 852
 853 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 854                         bool is_vf, enum qede_probe_mode mode)
 855 {
 856         struct qed_probe_params probe_params;
 857         struct qed_slowpath_params sp_params;
 858         struct qed_dev_eth_info dev_info;
 859         struct qede_dev *edev;
 860         struct qed_dev *cdev;
 861         int rc;
 862
 863         if (unlikely(dp_level & QED_LEVEL_INFO))
 864                 pr_notice("Starting qede probe\n");
 865
 866         memset(&probe_params, 0, sizeof(probe_params));
 867         probe_params.protocol = QED_PROTOCOL_ETH;
 868         probe_params.dp_module = dp_module;
 869         probe_params.dp_level = dp_level;
 870         probe_params.is_vf = is_vf;
 871         cdev = qed_ops->common->probe(pdev, &probe_params);
 872         if (!cdev) {
 873                 rc = -ENODEV;
 874                 goto err0;
 875         }
 876
 877         qede_update_pf_params(cdev);
 878
 879         /* Start the Slowpath-process */
 880         memset(&sp_params, 0, sizeof(sp_params));
 881         sp_params.int_mode = QED_INT_MODE_MSIX;
 882         sp_params.drv_major = QEDE_MAJOR_VERSION;
 883         sp_params.drv_minor = QEDE_MINOR_VERSION;
 884         sp_params.drv_rev = QEDE_REVISION_VERSION;
 885         sp_params.drv_eng = QEDE_ENGINEERING_VERSION;
 886         strlcpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
 887         rc = qed_ops->common->slowpath_start(cdev, &sp_params);
 888         if (rc) {
 889                 pr_notice("Cannot start slowpath\n");
 890                 goto err1;
 891         }
 892
 893         /* Learn information crucial for qede to progress */
 894         rc = qed_ops->fill_dev_info(cdev, &dev_info);
 895         if (rc)
 896                 goto err2;
 897
 898         edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
 899                                    dp_level);
 900         if (!edev) {
 901                 rc = -ENOMEM;
 902                 goto err2;
 903         }
 904
 905         if (is_vf)
 906                 edev->flags |= QEDE_FLAG_IS_VF;
 907
 908         qede_init_ndev(edev);
 909
 910         rc = qede_roce_dev_add(edev);
 911         if (rc)
 912                 goto err3;
 913
 914         /* Prepare the lock prior to the registeration of the netdev,
 915          * as once it's registered we might reach flows requiring it
 916          * [it's even possible to reach a flow needing it directly
 917          * from there, although it's unlikely].
 918          */
 919         INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
 920         mutex_init(&edev->qede_lock);
 921         rc = register_netdev(edev->ndev);
 922         if (rc) {
 923                 DP_NOTICE(edev, "Cannot register net-device\n");
 924                 goto err4;
 925         }
 926
 927         edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
 928
 929         /* PTP not supported on VFs */
 930         if (!is_vf)
 931                 qede_ptp_enable(edev, true);
 932
 933         edev->ops->register_ops(cdev, &qede_ll_ops, edev);
 934
 935 #ifdef CONFIG_DCB
 936         if (!IS_VF(edev))
 937                 qede_set_dcbnl_ops(edev->ndev);
 938 #endif
 939
 940         edev->rx_copybreak = QEDE_RX_HDR_SIZE;
 941
 942         DP_INFO(edev, "Ending successfully qede probe\n");
 943
 944         return 0;
 945
 946 err4:
 947         qede_roce_dev_remove(edev);
 948 err3:
 949         free_netdev(edev->ndev);
 950 err2:
 951         qed_ops->common->slowpath_stop(cdev);
 952 err1:
 953         qed_ops->common->remove(cdev);
 954 err0:
 955         return rc;
 956 }
 957
 958 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 959 {
 960         bool is_vf = false;
 961         u32 dp_module = 0;
 962         u8 dp_level = 0;
 963
 964         switch ((enum qede_pci_private)id->driver_data) {
 965         case QEDE_PRIVATE_VF:
 966                 if (debug & QED_LOG_VERBOSE_MASK)
 967                         dev_err(&pdev->dev, "Probing a VF\n");
 968                 is_vf = true;
 969                 break;
 970         default:
 971                 if (debug & QED_LOG_VERBOSE_MASK)
 972                         dev_err(&pdev->dev, "Probing a PF\n");
 973         }
 974
 975         qede_config_debug(debug, &dp_module, &dp_level);
 976
 977         return __qede_probe(pdev, dp_module, dp_level, is_vf,
 978                             QEDE_PROBE_NORMAL);
 979 }
 980
 981 enum qede_remove_mode {
 982         QEDE_REMOVE_NORMAL,
 983 };
 984
 985 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
 986 {
 987         struct net_device *ndev = pci_get_drvdata(pdev);
 988         struct qede_dev *edev = netdev_priv(ndev);
 989         struct qed_dev *cdev = edev->cdev;
 990
 991         DP_INFO(edev, "Starting qede_remove\n");
 992
 993         unregister_netdev(ndev);
 994         cancel_delayed_work_sync(&edev->sp_task);
 995
 996         qede_ptp_disable(edev);
 997
 998         qede_roce_dev_remove(edev);
 999
1000         edev->ops->common->set_power_state(cdev, PCI_D0);
1001
1002         pci_set_drvdata(pdev, NULL);
1003
1004         /* Release edev's reference to XDP's bpf if such exist */
1005         if (edev->xdp_prog)
1006                 bpf_prog_put(edev->xdp_prog);
1007
1008         /* Use global ops since we've freed edev */
1009         qed_ops->common->slowpath_stop(cdev);
1010         if (system_state == SYSTEM_POWER_OFF)
1011                 return;
1012         qed_ops->common->remove(cdev);
1013
1014         /* Since this can happen out-of-sync with other flows,
1015          * don't release the netdevice until after slowpath stop
1016          * has been called to guarantee various other contexts
1017          * [e.g., QED register callbacks] won't break anything when
1018          * accessing the netdevice.
1019          */
1020          free_netdev(ndev);
1021
1022         dev_info(&pdev->dev, "Ending qede_remove successfully\n");
1023 }
1024
1025 static void qede_remove(struct pci_dev *pdev)
1026 {
1027         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1028 }
1029
1030 static void qede_shutdown(struct pci_dev *pdev)
1031 {
1032         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1033 }
1034
1035 /* -------------------------------------------------------------------------
1036  * START OF LOAD / UNLOAD
1037  * -------------------------------------------------------------------------
1038  */
1039
1040 static int qede_set_num_queues(struct qede_dev *edev)
1041 {
1042         int rc;
1043         u16 rss_num;
1044
1045         /* Setup queues according to possible resources*/
1046         if (edev->req_queues)
1047                 rss_num = edev->req_queues;
1048         else
1049                 rss_num = netif_get_num_default_rss_queues() *
1050                           edev->dev_info.common.num_hwfns;
1051
1052         rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
1053
1054         rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
1055         if (rc > 0) {
1056                 /* Managed to request interrupts for our queues */
1057                 edev->num_queues = rc;
1058                 DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
1059                         QEDE_QUEUE_CNT(edev), rss_num);
1060                 rc = 0;
1061         }
1062
1063         edev->fp_num_tx = edev->req_num_tx;
1064         edev->fp_num_rx = edev->req_num_rx;
1065
1066         return rc;
1067 }
1068
1069 static void qede_free_mem_sb(struct qede_dev *edev,
1070                              struct qed_sb_info *sb_info)
1071 {
1072         if (sb_info->sb_virt)
1073                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
1074                                   (void *)sb_info->sb_virt, sb_info->sb_phys);
1075 }
1076
1077 /* This function allocates fast-path status block memory */
1078 static int qede_alloc_mem_sb(struct qede_dev *edev,
1079                              struct qed_sb_info *sb_info, u16 sb_id)
1080 {
1081         struct status_block *sb_virt;
1082         dma_addr_t sb_phys;
1083         int rc;
1084
1085         sb_virt = dma_alloc_coherent(&edev->pdev->dev,
1086                                      sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
1087         if (!sb_virt) {
1088                 DP_ERR(edev, "Status block allocation failed\n");
1089                 return -ENOMEM;
1090         }
1091
1092         rc = edev->ops->common->sb_init(edev->cdev, sb_info,
1093                                         sb_virt, sb_phys, sb_id,
1094                                         QED_SB_TYPE_L2_QUEUE);
1095         if (rc) {
1096                 DP_ERR(edev, "Status block initialization failed\n");
1097                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
1098                                   sb_virt, sb_phys);
1099                 return rc;
1100         }
1101
1102         return 0;
1103 }
1104
1105 static void qede_free_rx_buffers(struct qede_dev *edev,
1106                                  struct qede_rx_queue *rxq)
1107 {
1108         u16 i;
1109
1110         for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
1111                 struct sw_rx_data *rx_buf;
1112                 struct page *data;
1113
1114                 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
1115                 data = rx_buf->data;
1116
1117                 dma_unmap_page(&edev->pdev->dev,
1118                                rx_buf->mapping, PAGE_SIZE, rxq->data_direction);
1119
1120                 rx_buf->data = NULL;
1121                 __free_page(data);
1122         }
1123 }
1124
1125 static void qede_free_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
1126 {
1127         int i;
1128
1129         if (edev->gro_disable)
1130                 return;
1131
1132         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1133                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1134                 struct sw_rx_data *replace_buf = &tpa_info->buffer;
1135
1136                 if (replace_buf->data) {
1137                         dma_unmap_page(&edev->pdev->dev,
1138                                        replace_buf->mapping,
1139                                        PAGE_SIZE, DMA_FROM_DEVICE);
1140                         __free_page(replace_buf->data);
1141                 }
1142         }
1143 }
1144
1145 static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1146 {
1147         qede_free_sge_mem(edev, rxq);
1148
1149         /* Free rx buffers */
1150         qede_free_rx_buffers(edev, rxq);
1151
1152         /* Free the parallel SW ring */
1153         kfree(rxq->sw_rx_ring);
1154
1155         /* Free the real RQ ring used by FW */
1156         edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
1157         edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
1158 }
1159
1160 static int qede_alloc_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
1161 {
1162         dma_addr_t mapping;
1163         int i;
1164
1165         /* Don't perform FW aggregations in case of XDP */
1166         if (edev->xdp_prog)
1167                 edev->gro_disable = 1;
1168
1169         if (edev->gro_disable)
1170                 return 0;
1171
1172         if (edev->ndev->mtu > PAGE_SIZE) {
1173                 edev->gro_disable = 1;
1174                 return 0;
1175         }
1176
1177         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1178                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1179                 struct sw_rx_data *replace_buf = &tpa_info->buffer;
1180
1181                 replace_buf->data = alloc_pages(GFP_ATOMIC, 0);
1182                 if (unlikely(!replace_buf->data)) {
1183                         DP_NOTICE(edev,
1184                                   "Failed to allocate TPA skb pool [replacement buffer]\n");
1185                         goto err;
1186                 }
1187
1188                 mapping = dma_map_page(&edev->pdev->dev, replace_buf->data, 0,
1189                                        PAGE_SIZE, DMA_FROM_DEVICE);
1190                 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
1191                         DP_NOTICE(edev,
1192                                   "Failed to map TPA replacement buffer\n");
1193                         goto err;
1194                 }
1195
1196                 replace_buf->mapping = mapping;
1197                 tpa_info->buffer.page_offset = 0;
1198                 tpa_info->buffer_mapping = mapping;
1199                 tpa_info->state = QEDE_AGG_STATE_NONE;
1200         }
1201
1202         return 0;
1203 err:
1204         qede_free_sge_mem(edev, rxq);
1205         edev->gro_disable = 1;
1206         return -ENOMEM;
1207 }
1208
1209 /* This function allocates all memory needed per Rx queue */
1210 static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1211 {
1212         int i, rc, size;
1213
1214         rxq->num_rx_buffers = edev->q_num_rx_buffers;
1215
1216         rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;
1217         rxq->rx_headroom = edev->xdp_prog ? XDP_PACKET_HEADROOM : 0;
1218
1219         /* Make sure that the headroom and  payload fit in a single page */
1220         if (rxq->rx_buf_size + rxq->rx_headroom > PAGE_SIZE)
1221                 rxq->rx_buf_size = PAGE_SIZE - rxq->rx_headroom;
1222
1223         /* Segment size to spilt a page in multiple equal parts,
1224          * unless XDP is used in which case we'd use the entire page.
1225          */
1226         if (!edev->xdp_prog)
1227                 rxq->rx_buf_seg_size = roundup_pow_of_two(rxq->rx_buf_size);
1228         else
1229                 rxq->rx_buf_seg_size = PAGE_SIZE;
1230
1231         /* Allocate the parallel driver ring for Rx buffers */
1232         size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
1233         rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
1234         if (!rxq->sw_rx_ring) {
1235                 DP_ERR(edev, "Rx buffers ring allocation failed\n");
1236                 rc = -ENOMEM;
1237                 goto err;
1238         }
1239
1240         /* Allocate FW Rx ring  */
1241         rc = edev->ops->common->chain_alloc(edev->cdev,
1242                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1243                                             QED_CHAIN_MODE_NEXT_PTR,
1244                                             QED_CHAIN_CNT_TYPE_U16,
1245                                             RX_RING_SIZE,
1246                                             sizeof(struct eth_rx_bd),
1247                                             &rxq->rx_bd_ring);
1248
1249         if (rc)
1250                 goto err;
1251
1252         /* Allocate FW completion ring */
1253         rc = edev->ops->common->chain_alloc(edev->cdev,
1254                                             QED_CHAIN_USE_TO_CONSUME,
1255                                             QED_CHAIN_MODE_PBL,
1256                                             QED_CHAIN_CNT_TYPE_U16,
1257                                             RX_RING_SIZE,
1258                                             sizeof(union eth_rx_cqe),
1259                                             &rxq->rx_comp_ring);
1260         if (rc)
1261                 goto err;
1262
1263         /* Allocate buffers for the Rx ring */
1264         rxq->filled_buffers = 0;
1265         for (i = 0; i < rxq->num_rx_buffers; i++) {
1266                 rc = qede_alloc_rx_buffer(rxq, false);
1267                 if (rc) {
1268                         DP_ERR(edev,
1269                                "Rx buffers allocation failed at index %d\n", i);
1270                         goto err;
1271                 }
1272         }
1273
1274         rc = qede_alloc_sge_mem(edev, rxq);
1275 err:
1276         return rc;
1277 }
1278
1279 static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1280 {
1281         /* Free the parallel SW ring */
1282         if (txq->is_xdp)
1283                 kfree(txq->sw_tx_ring.xdp);
1284         else
1285                 kfree(txq->sw_tx_ring.skbs);
1286
1287         /* Free the real RQ ring used by FW */
1288         edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
1289 }
1290
1291 /* This function allocates all memory needed per Tx queue */
1292 static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1293 {
1294         union eth_tx_bd_types *p_virt;
1295         int size, rc;
1296
1297         txq->num_tx_buffers = edev->q_num_tx_buffers;
1298
1299         /* Allocate the parallel driver ring for Tx buffers */
1300         if (txq->is_xdp) {
1301                 size = sizeof(*txq->sw_tx_ring.xdp) * TX_RING_SIZE;
1302                 txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL);
1303                 if (!txq->sw_tx_ring.xdp)
1304                         goto err;
1305         } else {
1306                 size = sizeof(*txq->sw_tx_ring.skbs) * TX_RING_SIZE;
1307                 txq->sw_tx_ring.skbs = kzalloc(size, GFP_KERNEL);
1308                 if (!txq->sw_tx_ring.skbs)
1309                         goto err;
1310         }
1311
1312         rc = edev->ops->common->chain_alloc(edev->cdev,
1313                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1314                                             QED_CHAIN_MODE_PBL,
1315                                             QED_CHAIN_CNT_TYPE_U16,
1316                                             TX_RING_SIZE,
1317                                             sizeof(*p_virt), &txq->tx_pbl);
1318         if (rc)
1319                 goto err;
1320
1321         return 0;
1322
1323 err:
1324         qede_free_mem_txq(edev, txq);
1325         return -ENOMEM;
1326 }
1327
1328 /* This function frees all memory of a single fp */
1329 static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1330 {
1331         qede_free_mem_sb(edev, fp->sb_info);
1332
1333         if (fp->type & QEDE_FASTPATH_RX)
1334                 qede_free_mem_rxq(edev, fp->rxq);
1335
1336         if (fp->type & QEDE_FASTPATH_XDP)
1337                 qede_free_mem_txq(edev, fp->xdp_tx);
1338
1339         if (fp->type & QEDE_FASTPATH_TX)
1340                 qede_free_mem_txq(edev, fp->txq);
1341 }
1342
1343 /* This function allocates all memory needed for a single fp (i.e. an entity
1344  * which contains status block, one rx queue and/or multiple per-TC tx queues.
1345  */
1346 static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1347 {
1348         int rc = 0;
1349
1350         rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
1351         if (rc)
1352                 goto out;
1353
1354         if (fp->type & QEDE_FASTPATH_RX) {
1355                 rc = qede_alloc_mem_rxq(edev, fp->rxq);
1356                 if (rc)
1357                         goto out;
1358         }
1359
1360         if (fp->type & QEDE_FASTPATH_XDP) {
1361                 rc = qede_alloc_mem_txq(edev, fp->xdp_tx);
1362                 if (rc)
1363                         goto out;
1364         }
1365
1366         if (fp->type & QEDE_FASTPATH_TX) {
1367                 rc = qede_alloc_mem_txq(edev, fp->txq);
1368                 if (rc)
1369                         goto out;
1370         }
1371
1372 out:
1373         return rc;
1374 }
1375
1376 static void qede_free_mem_load(struct qede_dev *edev)
1377 {
1378         int i;
1379
1380         for_each_queue(i) {
1381                 struct qede_fastpath *fp = &edev->fp_array[i];
1382
1383                 qede_free_mem_fp(edev, fp);
1384         }
1385 }
1386
1387 /* This function allocates all qede memory at NIC load. */
1388 static int qede_alloc_mem_load(struct qede_dev *edev)
1389 {
1390         int rc = 0, queue_id;
1391
1392         for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
1393                 struct qede_fastpath *fp = &edev->fp_array[queue_id];
1394
1395                 rc = qede_alloc_mem_fp(edev, fp);
1396                 if (rc) {
1397                         DP_ERR(edev,
1398                                "Failed to allocate memory for fastpath - rss id = %d\n",
1399                                queue_id);
1400                         qede_free_mem_load(edev);
1401                         return rc;
1402                 }
1403         }
1404
1405         return 0;
1406 }
1407
1408 /* This function inits fp content and resets the SB, RXQ and TXQ structures */
1409 static void qede_init_fp(struct qede_dev *edev)
1410 {
1411         int queue_id, rxq_index = 0, txq_index = 0;
1412         struct qede_fastpath *fp;
1413
1414         for_each_queue(queue_id) {
1415                 fp = &edev->fp_array[queue_id];
1416
1417                 fp->edev = edev;
1418                 fp->id = queue_id;
1419
1420                 if (fp->type & QEDE_FASTPATH_XDP) {
1421                         fp->xdp_tx->index = QEDE_TXQ_IDX_TO_XDP(edev,
1422                                                                 rxq_index);
1423                         fp->xdp_tx->is_xdp = 1;
1424                 }
1425
1426                 if (fp->type & QEDE_FASTPATH_RX) {
1427                         fp->rxq->rxq_id = rxq_index++;
1428
1429                         /* Determine how to map buffers for this queue */
1430                         if (fp->type & QEDE_FASTPATH_XDP)
1431                                 fp->rxq->data_direction = DMA_BIDIRECTIONAL;
1432                         else
1433                                 fp->rxq->data_direction = DMA_FROM_DEVICE;
1434                         fp->rxq->dev = &edev->pdev->dev;
1435                 }
1436
1437                 if (fp->type & QEDE_FASTPATH_TX) {
1438                         fp->txq->index = txq_index++;
1439                         if (edev->dev_info.is_legacy)
1440                                 fp->txq->is_legacy = 1;
1441                         fp->txq->dev = &edev->pdev->dev;
1442                 }
1443
1444                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1445                          edev->ndev->name, queue_id);
1446         }
1447
1448         edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO);
1449 }
1450
1451 static int qede_set_real_num_queues(struct qede_dev *edev)
1452 {
1453         int rc = 0;
1454
1455         rc = netif_set_real_num_tx_queues(edev->ndev, QEDE_TSS_COUNT(edev));
1456         if (rc) {
1457                 DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
1458                 return rc;
1459         }
1460
1461         rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
1462         if (rc) {
1463                 DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
1464                 return rc;
1465         }
1466
1467         return 0;
1468 }
1469
1470 static void qede_napi_disable_remove(struct qede_dev *edev)
1471 {
1472         int i;
1473
1474         for_each_queue(i) {
1475                 napi_disable(&edev->fp_array[i].napi);
1476
1477                 netif_napi_del(&edev->fp_array[i].napi);
1478         }
1479 }
1480
1481 static void qede_napi_add_enable(struct qede_dev *edev)
1482 {
1483         int i;
1484
1485         /* Add NAPI objects */
1486         for_each_queue(i) {
1487                 netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
1488                                qede_poll, NAPI_POLL_WEIGHT);
1489                 napi_enable(&edev->fp_array[i].napi);
1490         }
1491 }
1492
1493 static void qede_sync_free_irqs(struct qede_dev *edev)
1494 {
1495         int i;
1496
1497         for (i = 0; i < edev->int_info.used_cnt; i++) {
1498                 if (edev->int_info.msix_cnt) {
1499                         synchronize_irq(edev->int_info.msix[i].vector);
1500                         free_irq(edev->int_info.msix[i].vector,
1501                                  &edev->fp_array[i]);
1502                 } else {
1503                         edev->ops->common->simd_handler_clean(edev->cdev, i);
1504                 }
1505         }
1506
1507         edev->int_info.used_cnt = 0;
1508 }
1509
1510 static int qede_req_msix_irqs(struct qede_dev *edev)
1511 {
1512         int i, rc;
1513
1514         /* Sanitize number of interrupts == number of prepared RSS queues */
1515         if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
1516                 DP_ERR(edev,
1517                        "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
1518                        QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
1519                 return -EINVAL;
1520         }
1521
1522         for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
1523 #ifdef CONFIG_RFS_ACCEL
1524                 struct qede_fastpath *fp = &edev->fp_array[i];
1525
1526                 if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) {
1527                         rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap,
1528                                               edev->int_info.msix[i].vector);
1529                         if (rc) {
1530                                 DP_ERR(edev, "Failed to add CPU rmap\n");
1531                                 qede_free_arfs(edev);
1532                         }
1533                 }
1534 #endif
1535                 rc = request_irq(edev->int_info.msix[i].vector,
1536                                  qede_msix_fp_int, 0, edev->fp_array[i].name,
1537                                  &edev->fp_array[i]);
1538                 if (rc) {
1539                         DP_ERR(edev, "Request fp %d irq failed\n", i);
1540                         qede_sync_free_irqs(edev);
1541                         return rc;
1542                 }
1543                 DP_VERBOSE(edev, NETIF_MSG_INTR,
1544                            "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
1545                            edev->fp_array[i].name, i,
1546                            &edev->fp_array[i]);
1547                 edev->int_info.used_cnt++;
1548         }
1549
1550         return 0;
1551 }
1552
1553 static void qede_simd_fp_handler(void *cookie)
1554 {
1555         struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
1556
1557         napi_schedule_irqoff(&fp->napi);
1558 }
1559
1560 static int qede_setup_irqs(struct qede_dev *edev)
1561 {
1562         int i, rc = 0;
1563
1564         /* Learn Interrupt configuration */
1565         rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
1566         if (rc)
1567                 return rc;
1568
1569         if (edev->int_info.msix_cnt) {
1570                 rc = qede_req_msix_irqs(edev);
1571                 if (rc)
1572                         return rc;
1573                 edev->ndev->irq = edev->int_info.msix[0].vector;
1574         } else {
1575                 const struct qed_common_ops *ops;
1576
1577                 /* qed should learn receive the RSS ids and callbacks */
1578                 ops = edev->ops->common;
1579                 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
1580                         ops->simd_handler_config(edev->cdev,
1581                                                  &edev->fp_array[i], i,
1582                                                  qede_simd_fp_handler);
1583                 edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
1584         }
1585         return 0;
1586 }
1587
1588 static int qede_drain_txq(struct qede_dev *edev,
1589                           struct qede_tx_queue *txq, bool allow_drain)
1590 {
1591         int rc, cnt = 1000;
1592
1593         while (txq->sw_tx_cons != txq->sw_tx_prod) {
1594                 if (!cnt) {
1595                         if (allow_drain) {
1596                                 DP_NOTICE(edev,
1597                                           "Tx queue[%d] is stuck, requesting MCP to drain\n",
1598                                           txq->index);
1599                                 rc = edev->ops->common->drain(edev->cdev);
1600                                 if (rc)
1601                                         return rc;
1602                                 return qede_drain_txq(edev, txq, false);
1603                         }
1604                         DP_NOTICE(edev,
1605                                   "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
1606                                   txq->index, txq->sw_tx_prod,
1607                                   txq->sw_tx_cons);
1608                         return -ENODEV;
1609                 }
1610                 cnt--;
1611                 usleep_range(1000, 2000);
1612                 barrier();
1613         }
1614
1615         /* FW finished processing, wait for HW to transmit all tx packets */
1616         usleep_range(1000, 2000);
1617
1618         return 0;
1619 }
1620
1621 static int qede_stop_txq(struct qede_dev *edev,
1622                          struct qede_tx_queue *txq, int rss_id)
1623 {
1624         return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle);
1625 }
1626
1627 static int qede_stop_queues(struct qede_dev *edev)
1628 {
1629         struct qed_update_vport_params *vport_update_params;
1630         struct qed_dev *cdev = edev->cdev;
1631         struct qede_fastpath *fp;
1632         int rc, i;
1633
1634         /* Disable the vport */
1635         vport_update_params = vzalloc(sizeof(*vport_update_params));
1636         if (!vport_update_params)
1637                 return -ENOMEM;
1638
1639         vport_update_params->vport_id = 0;
1640         vport_update_params->update_vport_active_flg = 1;
1641         vport_update_params->vport_active_flg = 0;
1642         vport_update_params->update_rss_flg = 0;
1643
1644         rc = edev->ops->vport_update(cdev, vport_update_params);
1645         vfree(vport_update_params);
1646
1647         if (rc) {
1648                 DP_ERR(edev, "Failed to update vport\n");
1649                 return rc;
1650         }
1651
1652         /* Flush Tx queues. If needed, request drain from MCP */
1653         for_each_queue(i) {
1654                 fp = &edev->fp_array[i];
1655
1656                 if (fp->type & QEDE_FASTPATH_TX) {
1657                         rc = qede_drain_txq(edev, fp->txq, true);
1658                         if (rc)
1659                                 return rc;
1660                 }
1661
1662                 if (fp->type & QEDE_FASTPATH_XDP) {
1663                         rc = qede_drain_txq(edev, fp->xdp_tx, true);
1664                         if (rc)
1665                                 return rc;
1666                 }
1667         }
1668
1669         /* Stop all Queues in reverse order */
1670         for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
1671                 fp = &edev->fp_array[i];
1672
1673                 /* Stop the Tx Queue(s) */
1674                 if (fp->type & QEDE_FASTPATH_TX) {
1675                         rc = qede_stop_txq(edev, fp->txq, i);
1676                         if (rc)
1677                                 return rc;
1678                 }
1679
1680                 /* Stop the Rx Queue */
1681                 if (fp->type & QEDE_FASTPATH_RX) {
1682                         rc = edev->ops->q_rx_stop(cdev, i, fp->rxq->handle);
1683                         if (rc) {
1684                                 DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
1685                                 return rc;
1686                         }
1687                 }
1688
1689                 /* Stop the XDP forwarding queue */
1690                 if (fp->type & QEDE_FASTPATH_XDP) {
1691                         rc = qede_stop_txq(edev, fp->xdp_tx, i);
1692                         if (rc)
1693                                 return rc;
1694
1695                         bpf_prog_put(fp->rxq->xdp_prog);
1696                 }
1697         }
1698
1699         /* Stop the vport */
1700         rc = edev->ops->vport_stop(cdev, 0);
1701         if (rc)
1702                 DP_ERR(edev, "Failed to stop VPORT\n");
1703
1704         return rc;
1705 }
1706
1707 static int qede_start_txq(struct qede_dev *edev,
1708                           struct qede_fastpath *fp,
1709                           struct qede_tx_queue *txq, u8 rss_id, u16 sb_idx)
1710 {
1711         dma_addr_t phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
1712         u32 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
1713         struct qed_queue_start_common_params params;
1714         struct qed_txq_start_ret_params ret_params;
1715         int rc;
1716
1717         memset(&params, 0, sizeof(params));
1718         memset(&ret_params, 0, sizeof(ret_params));
1719
1720         /* Let the XDP queue share the queue-zone with one of the regular txq.
1721          * We don't really care about its coalescing.
1722          */
1723         if (txq->is_xdp)
1724                 params.queue_id = QEDE_TXQ_XDP_TO_IDX(edev, txq);
1725         else
1726                 params.queue_id = txq->index;
1727
1728         params.sb = fp->sb_info->igu_sb_id;
1729         params.sb_idx = sb_idx;
1730
1731         rc = edev->ops->q_tx_start(edev->cdev, rss_id, &params, phys_table,
1732                                    page_cnt, &ret_params);
1733         if (rc) {
1734                 DP_ERR(edev, "Start TXQ #%d failed %d\n", txq->index, rc);
1735                 return rc;
1736         }
1737
1738         txq->doorbell_addr = ret_params.p_doorbell;
1739         txq->handle = ret_params.p_handle;
1740
1741         /* Determine the FW consumer address associated */
1742         txq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[sb_idx];
1743
1744         /* Prepare the doorbell parameters */
1745         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_DEST, DB_DEST_XCM);
1746         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
1747         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_VAL_SEL,
1748                   DQ_XCM_ETH_TX_BD_PROD_CMD);
1749         txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
1750
1751         return rc;
1752 }
1753
1754 static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
1755 {
1756         int vlan_removal_en = 1;
1757         struct qed_dev *cdev = edev->cdev;
1758         struct qed_dev_info *qed_info = &edev->dev_info.common;
1759         struct qed_update_vport_params *vport_update_params;
1760         struct qed_queue_start_common_params q_params;
1761         struct qed_start_vport_params start = {0};
1762         int rc, i;
1763
1764         if (!edev->num_queues) {
1765                 DP_ERR(edev,
1766                        "Cannot update V-VPORT as active as there are no Rx queues\n");
1767                 return -EINVAL;
1768         }
1769
1770         vport_update_params = vzalloc(sizeof(*vport_update_params));
1771         if (!vport_update_params)
1772                 return -ENOMEM;
1773
1774         start.handle_ptp_pkts = !!(edev->ptp);
1775         start.gro_enable = !edev->gro_disable;
1776         start.mtu = edev->ndev->mtu;
1777         start.vport_id = 0;
1778         start.drop_ttl0 = true;
1779         start.remove_inner_vlan = vlan_removal_en;
1780         start.clear_stats = clear_stats;
1781
1782         rc = edev->ops->vport_start(cdev, &start);
1783
1784         if (rc) {
1785                 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
1786                 goto out;
1787         }
1788
1789         DP_VERBOSE(edev, NETIF_MSG_IFUP,
1790                    "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
1791                    start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
1792
1793         for_each_queue(i) {
1794                 struct qede_fastpath *fp = &edev->fp_array[i];
1795                 dma_addr_t p_phys_table;
1796                 u32 page_cnt;
1797
1798                 if (fp->type & QEDE_FASTPATH_RX) {
1799                         struct qed_rxq_start_ret_params ret_params;
1800                         struct qede_rx_queue *rxq = fp->rxq;
1801                         __le16 *val;
1802
1803                         memset(&ret_params, 0, sizeof(ret_params));
1804                         memset(&q_params, 0, sizeof(q_params));
1805                         q_params.queue_id = rxq->rxq_id;
1806                         q_params.vport_id = 0;
1807                         q_params.sb = fp->sb_info->igu_sb_id;
1808                         q_params.sb_idx = RX_PI;
1809
1810                         p_phys_table =
1811                             qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
1812                         page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);
1813
1814                         rc = edev->ops->q_rx_start(cdev, i, &q_params,
1815                                                    rxq->rx_buf_size,
1816                                                    rxq->rx_bd_ring.p_phys_addr,
1817                                                    p_phys_table,
1818                                                    page_cnt, &ret_params);
1819                         if (rc) {
1820                                 DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
1821                                        rc);
1822                                 goto out;
1823                         }
1824
1825                         /* Use the return parameters */
1826                         rxq->hw_rxq_prod_addr = ret_params.p_prod;
1827                         rxq->handle = ret_params.p_handle;
1828
1829                         val = &fp->sb_info->sb_virt->pi_array[RX_PI];
1830                         rxq->hw_cons_ptr = val;
1831
1832                         qede_update_rx_prod(edev, rxq);
1833                 }
1834
1835                 if (fp->type & QEDE_FASTPATH_XDP) {
1836                         rc = qede_start_txq(edev, fp, fp->xdp_tx, i, XDP_PI);
1837                         if (rc)
1838                                 goto out;
1839
1840                         fp->rxq->xdp_prog = bpf_prog_add(edev->xdp_prog, 1);
1841                         if (IS_ERR(fp->rxq->xdp_prog)) {
1842                                 rc = PTR_ERR(fp->rxq->xdp_prog);
1843                                 fp->rxq->xdp_prog = NULL;
1844                                 goto out;
1845                         }
1846                 }
1847
1848                 if (fp->type & QEDE_FASTPATH_TX) {
1849                         rc = qede_start_txq(edev, fp, fp->txq, i, TX_PI(0));
1850                         if (rc)
1851                                 goto out;
1852                 }
1853         }
1854
1855         /* Prepare and send the vport enable */
1856         vport_update_params->vport_id = start.vport_id;
1857         vport_update_params->update_vport_active_flg = 1;
1858         vport_update_params->vport_active_flg = 1;
1859
1860         if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) &&
1861             qed_info->tx_switching) {
1862                 vport_update_params->update_tx_switching_flg = 1;
1863                 vport_update_params->tx_switching_flg = 1;
1864         }
1865
1866         qede_fill_rss_params(edev, &vport_update_params->rss_params,
1867                              &vport_update_params->update_rss_flg);
1868
1869         rc = edev->ops->vport_update(cdev, vport_update_params);
1870         if (rc)
1871                 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
1872
1873 out:
1874         vfree(vport_update_params);
1875         return rc;
1876 }
1877
1878 enum qede_unload_mode {
1879         QEDE_UNLOAD_NORMAL,
1880 };
1881
1882 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
1883                         bool is_locked)
1884 {
1885         struct qed_link_params link_params;
1886         int rc;
1887
1888         DP_INFO(edev, "Starting qede unload\n");
1889
1890         if (!is_locked)
1891                 __qede_lock(edev);
1892
1893         qede_roce_dev_event_close(edev);
1894         edev->state = QEDE_STATE_CLOSED;
1895
1896         /* Close OS Tx */
1897         netif_tx_disable(edev->ndev);
1898         netif_carrier_off(edev->ndev);
1899
1900         /* Reset the link */
1901         memset(&link_params, 0, sizeof(link_params));
1902         link_params.link_up = false;
1903         edev->ops->common->set_link(edev->cdev, &link_params);
1904         rc = qede_stop_queues(edev);
1905         if (rc) {
1906                 qede_sync_free_irqs(edev);
1907                 goto out;
1908         }
1909
1910         DP_INFO(edev, "Stopped Queues\n");
1911
1912         qede_vlan_mark_nonconfigured(edev);
1913         edev->ops->fastpath_stop(edev->cdev);
1914 #ifdef CONFIG_RFS_ACCEL
1915         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
1916                 qede_poll_for_freeing_arfs_filters(edev);
1917                 qede_free_arfs(edev);
1918         }
1919 #endif
1920         /* Release the interrupts */
1921         qede_sync_free_irqs(edev);
1922         edev->ops->common->set_fp_int(edev->cdev, 0);
1923
1924         qede_napi_disable_remove(edev);
1925
1926         qede_free_mem_load(edev);
1927         qede_free_fp_array(edev);
1928
1929 out:
1930         if (!is_locked)
1931                 __qede_unlock(edev);
1932         DP_INFO(edev, "Ending qede unload\n");
1933 }
1934
1935 enum qede_load_mode {
1936         QEDE_LOAD_NORMAL,
1937         QEDE_LOAD_RELOAD,
1938 };
1939
1940 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
1941                      bool is_locked)
1942 {
1943         struct qed_link_params link_params;
1944         int rc;
1945
1946         DP_INFO(edev, "Starting qede load\n");
1947
1948         if (!is_locked)
1949                 __qede_lock(edev);
1950
1951         rc = qede_set_num_queues(edev);
1952         if (rc)
1953                 goto out;
1954
1955         rc = qede_alloc_fp_array(edev);
1956         if (rc)
1957                 goto out;
1958
1959         qede_init_fp(edev);
1960
1961         rc = qede_alloc_mem_load(edev);
1962         if (rc)
1963                 goto err1;
1964         DP_INFO(edev, "Allocated %d Rx, %d Tx queues\n",
1965                 QEDE_RSS_COUNT(edev), QEDE_TSS_COUNT(edev));
1966
1967         rc = qede_set_real_num_queues(edev);
1968         if (rc)
1969                 goto err2;
1970
1971 #ifdef CONFIG_RFS_ACCEL
1972         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
1973                 rc = qede_alloc_arfs(edev);
1974                 if (rc)
1975                         DP_NOTICE(edev, "aRFS memory allocation failed\n");
1976         }
1977 #endif
1978         qede_napi_add_enable(edev);
1979         DP_INFO(edev, "Napi added and enabled\n");
1980
1981         rc = qede_setup_irqs(edev);
1982         if (rc)
1983                 goto err3;
1984         DP_INFO(edev, "Setup IRQs succeeded\n");
1985
1986         rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
1987         if (rc)
1988                 goto err4;
1989         DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
1990
1991         /* Add primary mac and set Rx filters */
1992         ether_addr_copy(edev->primary_mac, edev->ndev->dev_addr);
1993
1994         /* Program un-configured VLANs */
1995         qede_configure_vlan_filters(edev);
1996
1997         /* Ask for link-up using current configuration */
1998         memset(&link_params, 0, sizeof(link_params));
1999         link_params.link_up = true;
2000         edev->ops->common->set_link(edev->cdev, &link_params);
2001
2002         qede_roce_dev_event_open(edev);
2003
2004         edev->state = QEDE_STATE_OPEN;
2005
2006         DP_INFO(edev, "Ending successfully qede load\n");
2007
2008         goto out;
2009 err4:
2010         qede_sync_free_irqs(edev);
2011         memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
2012 err3:
2013         qede_napi_disable_remove(edev);
2014 err2:
2015         qede_free_mem_load(edev);
2016 err1:
2017         edev->ops->common->set_fp_int(edev->cdev, 0);
2018         qede_free_fp_array(edev);
2019         edev->num_queues = 0;
2020         edev->fp_num_tx = 0;
2021         edev->fp_num_rx = 0;
2022 out:
2023         if (!is_locked)
2024                 __qede_unlock(edev);
2025
2026         return rc;
2027 }
2028
2029 /* 'func' should be able to run between unload and reload assuming interface
2030  * is actually running, or afterwards in case it's currently DOWN.
2031  */
2032 void qede_reload(struct qede_dev *edev,
2033                  struct qede_reload_args *args, bool is_locked)
2034 {
2035         if (!is_locked)
2036                 __qede_lock(edev);
2037
2038         /* Since qede_lock is held, internal state wouldn't change even
2039          * if netdev state would start transitioning. Check whether current
2040          * internal configuration indicates device is up, then reload.
2041          */
2042         if (edev->state == QEDE_STATE_OPEN) {
2043                 qede_unload(edev, QEDE_UNLOAD_NORMAL, true);
2044                 if (args)
2045                         args->func(edev, args);
2046                 qede_load(edev, QEDE_LOAD_RELOAD, true);
2047
2048                 /* Since no one is going to do it for us, re-configure */
2049                 qede_config_rx_mode(edev->ndev);
2050         } else if (args) {
2051                 args->func(edev, args);
2052         }
2053
2054         if (!is_locked)
2055                 __qede_unlock(edev);
2056 }
2057
2058 /* called with rtnl_lock */
2059 static int qede_open(struct net_device *ndev)
2060 {
2061         struct qede_dev *edev = netdev_priv(ndev);
2062         int rc;
2063
2064         netif_carrier_off(ndev);
2065
2066         edev->ops->common->set_power_state(edev->cdev, PCI_D0);
2067
2068         rc = qede_load(edev, QEDE_LOAD_NORMAL, false);
2069         if (rc)
2070                 return rc;
2071
2072         udp_tunnel_get_rx_info(ndev);
2073
2074         edev->ops->common->update_drv_state(edev->cdev, true);
2075
2076         return 0;
2077 }
2078
2079 static int qede_close(struct net_device *ndev)
2080 {
2081         struct qede_dev *edev = netdev_priv(ndev);
2082
2083         qede_unload(edev, QEDE_UNLOAD_NORMAL, false);
2084
2085         edev->ops->common->update_drv_state(edev->cdev, false);
2086
2087         return 0;
2088 }
2089
2090 static void qede_link_update(void *dev, struct qed_link_output *link)
2091 {
2092         struct qede_dev *edev = dev;
2093
2094         if (!netif_running(edev->ndev)) {
2095                 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
2096                 return;
2097         }
2098
2099         if (link->link_up) {
2100                 if (!netif_carrier_ok(edev->ndev)) {
2101                         DP_NOTICE(edev, "Link is up\n");
2102                         netif_tx_start_all_queues(edev->ndev);
2103                         netif_carrier_on(edev->ndev);
2104                 }
2105         } else {
2106                 if (netif_carrier_ok(edev->ndev)) {
2107                         DP_NOTICE(edev, "Link is down\n");
2108                         netif_tx_disable(edev->ndev);
2109                         netif_carrier_off(edev->ndev);
2110                 }
2111         }
2112 }