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

   1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
   2 /* QLogic qede NIC Driver
   3  * Copyright (c) 2015-2017  QLogic Corporation
   4  * Copyright (c) 2019-2020 Marvell International Ltd.
   5  */
   6
   7 #include <linux/crash_dump.h>
   8 #include <linux/module.h>
   9 #include <linux/pci.h>
  10 #include <linux/device.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/etherdevice.h>
  13 #include <linux/skbuff.h>
  14 #include <linux/errno.h>
  15 #include <linux/list.h>
  16 #include <linux/string.h>
  17 #include <linux/dma-mapping.h>
  18 #include <linux/interrupt.h>
  19 #include <asm/byteorder.h>
  20 #include <asm/param.h>
  21 #include <linux/io.h>
  22 #include <linux/netdev_features.h>
  23 #include <linux/udp.h>
  24 #include <linux/tcp.h>
  25 #include <net/udp_tunnel.h>
  26 #include <linux/ip.h>
  27 #include <net/ipv6.h>
  28 #include <net/tcp.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/pkt_sched.h>
  32 #include <linux/ethtool.h>
  33 #include <linux/in.h>
  34 #include <linux/random.h>
  35 #include <net/ip6_checksum.h>
  36 #include <linux/bitops.h>
  37 #include <linux/vmalloc.h>
  38 #include "qede.h"
  39 #include "qede_ptp.h"
  40
  41 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
  42 MODULE_LICENSE("GPL");
  43
  44 static uint debug;
  45 module_param(debug, uint, 0);
  46 MODULE_PARM_DESC(debug, " Default debug msglevel");
  47
  48 static const struct qed_eth_ops *qed_ops;
  49
  50 #define CHIP_NUM_57980S_40              0x1634
  51 #define CHIP_NUM_57980S_10              0x1666
  52 #define CHIP_NUM_57980S_MF              0x1636
  53 #define CHIP_NUM_57980S_100             0x1644
  54 #define CHIP_NUM_57980S_50              0x1654
  55 #define CHIP_NUM_57980S_25              0x1656
  56 #define CHIP_NUM_57980S_IOV             0x1664
  57 #define CHIP_NUM_AH                     0x8070
  58 #define CHIP_NUM_AH_IOV                 0x8090
  59
  60 #ifndef PCI_DEVICE_ID_NX2_57980E
  61 #define PCI_DEVICE_ID_57980S_40         CHIP_NUM_57980S_40
  62 #define PCI_DEVICE_ID_57980S_10         CHIP_NUM_57980S_10
  63 #define PCI_DEVICE_ID_57980S_MF         CHIP_NUM_57980S_MF
  64 #define PCI_DEVICE_ID_57980S_100        CHIP_NUM_57980S_100
  65 #define PCI_DEVICE_ID_57980S_50         CHIP_NUM_57980S_50
  66 #define PCI_DEVICE_ID_57980S_25         CHIP_NUM_57980S_25
  67 #define PCI_DEVICE_ID_57980S_IOV        CHIP_NUM_57980S_IOV
  68 #define PCI_DEVICE_ID_AH                CHIP_NUM_AH
  69 #define PCI_DEVICE_ID_AH_IOV            CHIP_NUM_AH_IOV
  70
  71 #endif
  72
  73 enum qede_pci_private {
  74         QEDE_PRIVATE_PF,
  75         QEDE_PRIVATE_VF
  76 };
  77
  78 static const struct pci_device_id qede_pci_tbl[] = {
  79         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
  80         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
  81         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
  82         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
  83         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
  84         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
  85 #ifdef CONFIG_QED_SRIOV
  86         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
  87 #endif
  88         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH), QEDE_PRIVATE_PF},
  89 #ifdef CONFIG_QED_SRIOV
  90         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH_IOV), QEDE_PRIVATE_VF},
  91 #endif
  92         { 0 }
  93 };
  94
  95 MODULE_DEVICE_TABLE(pci, qede_pci_tbl);
  96
  97 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  98 static pci_ers_result_t
  99 qede_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state);
 100
 101 #define TX_TIMEOUT              (5 * HZ)
 102
 103 /* Utilize last protocol index for XDP */
 104 #define XDP_PI  11
 105
 106 static void qede_remove(struct pci_dev *pdev);
 107 static void qede_shutdown(struct pci_dev *pdev);
 108 static void qede_link_update(void *dev, struct qed_link_output *link);
 109 static void qede_schedule_recovery_handler(void *dev);
 110 static void qede_recovery_handler(struct qede_dev *edev);
 111 static void qede_schedule_hw_err_handler(void *dev,
 112                                          enum qed_hw_err_type err_type);
 113 static void qede_get_eth_tlv_data(void *edev, void *data);
 114 static void qede_get_generic_tlv_data(void *edev,
 115                                       struct qed_generic_tlvs *data);
 116 static void qede_generic_hw_err_handler(struct qede_dev *edev);
 117 #ifdef CONFIG_QED_SRIOV
 118 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos,
 119                             __be16 vlan_proto)
 120 {
 121         struct qede_dev *edev = netdev_priv(ndev);
 122
 123         if (vlan > 4095) {
 124                 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
 125                 return -EINVAL;
 126         }
 127
 128         if (vlan_proto != htons(ETH_P_8021Q))
 129                 return -EPROTONOSUPPORT;
 130
 131         DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
 132                    vlan, vf);
 133
 134         return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
 135 }
 136
 137 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
 138 {
 139         struct qede_dev *edev = netdev_priv(ndev);
 140
 141         DP_VERBOSE(edev, QED_MSG_IOV, "Setting MAC %pM to VF [%d]\n", mac, vfidx);
 142
 143         if (!is_valid_ether_addr(mac)) {
 144                 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
 145                 return -EINVAL;
 146         }
 147
 148         return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
 149 }
 150
 151 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
 152 {
 153         struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
 154         struct qed_dev_info *qed_info = &edev->dev_info.common;
 155         struct qed_update_vport_params *vport_params;
 156         int rc;
 157
 158         vport_params = vzalloc(sizeof(*vport_params));
 159         if (!vport_params)
 160                 return -ENOMEM;
 161         DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);
 162
 163         rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);
 164
 165         /* Enable/Disable Tx switching for PF */
 166         if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
 167             !qed_info->b_inter_pf_switch && qed_info->tx_switching) {
 168                 vport_params->vport_id = 0;
 169                 vport_params->update_tx_switching_flg = 1;
 170                 vport_params->tx_switching_flg = num_vfs_param ? 1 : 0;
 171                 edev->ops->vport_update(edev->cdev, vport_params);
 172         }
 173
 174         vfree(vport_params);
 175         return rc;
 176 }
 177 #endif
 178
 179 static const struct pci_error_handlers qede_err_handler = {
 180         .error_detected = qede_io_error_detected,
 181 };
 182
 183 static struct pci_driver qede_pci_driver = {
 184         .name = "qede",
 185         .id_table = qede_pci_tbl,
 186         .probe = qede_probe,
 187         .remove = qede_remove,
 188         .shutdown = qede_shutdown,
 189 #ifdef CONFIG_QED_SRIOV
 190         .sriov_configure = qede_sriov_configure,
 191 #endif
 192         .err_handler = &qede_err_handler,
 193 };
 194
 195 static struct qed_eth_cb_ops qede_ll_ops = {
 196         {
 197 #ifdef CONFIG_RFS_ACCEL
 198                 .arfs_filter_op = qede_arfs_filter_op,
 199 #endif
 200                 .link_update = qede_link_update,
 201                 .schedule_recovery_handler = qede_schedule_recovery_handler,
 202                 .schedule_hw_err_handler = qede_schedule_hw_err_handler,
 203                 .get_generic_tlv_data = qede_get_generic_tlv_data,
 204                 .get_protocol_tlv_data = qede_get_eth_tlv_data,
 205         },
 206         .force_mac = qede_force_mac,
 207         .ports_update = qede_udp_ports_update,
 208 };
 209
 210 static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 211                              void *ptr)
 212 {
 213         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 214         struct ethtool_drvinfo drvinfo;
 215         struct qede_dev *edev;
 216
 217         if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
 218                 goto done;
 219
 220         /* Check whether this is a qede device */
 221         if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
 222                 goto done;
 223
 224         memset(&drvinfo, 0, sizeof(drvinfo));
 225         ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
 226         if (strcmp(drvinfo.driver, "qede"))
 227                 goto done;
 228         edev = netdev_priv(ndev);
 229
 230         switch (event) {
 231         case NETDEV_CHANGENAME:
 232                 /* Notify qed of the name change */
 233                 if (!edev->ops || !edev->ops->common)
 234                         goto done;
 235                 edev->ops->common->set_name(edev->cdev, edev->ndev->name);
 236                 break;
 237         case NETDEV_CHANGEADDR:
 238                 edev = netdev_priv(ndev);
 239                 qede_rdma_event_changeaddr(edev);
 240                 break;
 241         }
 242
 243 done:
 244         return NOTIFY_DONE;
 245 }
 246
 247 static struct notifier_block qede_netdev_notifier = {
 248         .notifier_call = qede_netdev_event,
 249 };
 250
 251 static
 252 int __init qede_init(void)
 253 {
 254         int ret;
 255
 256         pr_info("qede init: QLogic FastLinQ 4xxxx Ethernet Driver qede\n");
 257
 258         qede_forced_speed_maps_init();
 259
 260         qed_ops = qed_get_eth_ops();
 261         if (!qed_ops) {
 262                 pr_notice("Failed to get qed ethtool operations\n");
 263                 return -EINVAL;
 264         }
 265
 266         /* Must register notifier before pci ops, since we might miss
 267          * interface rename after pci probe and netdev registration.
 268          */
 269         ret = register_netdevice_notifier(&qede_netdev_notifier);
 270         if (ret) {
 271                 pr_notice("Failed to register netdevice_notifier\n");
 272                 qed_put_eth_ops();
 273                 return -EINVAL;
 274         }
 275
 276         ret = pci_register_driver(&qede_pci_driver);
 277         if (ret) {
 278                 pr_notice("Failed to register driver\n");
 279                 unregister_netdevice_notifier(&qede_netdev_notifier);
 280                 qed_put_eth_ops();
 281                 return -EINVAL;
 282         }
 283
 284         return 0;
 285 }
 286
 287 static void __exit qede_cleanup(void)
 288 {
 289         if (debug & QED_LOG_INFO_MASK)
 290                 pr_info("qede_cleanup called\n");
 291
 292         unregister_netdevice_notifier(&qede_netdev_notifier);
 293         pci_unregister_driver(&qede_pci_driver);
 294         qed_put_eth_ops();
 295 }
 296
 297 module_init(qede_init);
 298 module_exit(qede_cleanup);
 299
 300 static int qede_open(struct net_device *ndev);
 301 static int qede_close(struct net_device *ndev);
 302
 303 void qede_fill_by_demand_stats(struct qede_dev *edev)
 304 {
 305         struct qede_stats_common *p_common = &edev->stats.common;
 306         struct qed_eth_stats stats;
 307
 308         edev->ops->get_vport_stats(edev->cdev, &stats);
 309
 310         spin_lock(&edev->stats_lock);
 311
 312         p_common->no_buff_discards = stats.common.no_buff_discards;
 313         p_common->packet_too_big_discard = stats.common.packet_too_big_discard;
 314         p_common->ttl0_discard = stats.common.ttl0_discard;
 315         p_common->rx_ucast_bytes = stats.common.rx_ucast_bytes;
 316         p_common->rx_mcast_bytes = stats.common.rx_mcast_bytes;
 317         p_common->rx_bcast_bytes = stats.common.rx_bcast_bytes;
 318         p_common->rx_ucast_pkts = stats.common.rx_ucast_pkts;
 319         p_common->rx_mcast_pkts = stats.common.rx_mcast_pkts;
 320         p_common->rx_bcast_pkts = stats.common.rx_bcast_pkts;
 321         p_common->mftag_filter_discards = stats.common.mftag_filter_discards;
 322         p_common->mac_filter_discards = stats.common.mac_filter_discards;
 323         p_common->gft_filter_drop = stats.common.gft_filter_drop;
 324
 325         p_common->tx_ucast_bytes = stats.common.tx_ucast_bytes;
 326         p_common->tx_mcast_bytes = stats.common.tx_mcast_bytes;
 327         p_common->tx_bcast_bytes = stats.common.tx_bcast_bytes;
 328         p_common->tx_ucast_pkts = stats.common.tx_ucast_pkts;
 329         p_common->tx_mcast_pkts = stats.common.tx_mcast_pkts;
 330         p_common->tx_bcast_pkts = stats.common.tx_bcast_pkts;
 331         p_common->tx_err_drop_pkts = stats.common.tx_err_drop_pkts;
 332         p_common->coalesced_pkts = stats.common.tpa_coalesced_pkts;
 333         p_common->coalesced_events = stats.common.tpa_coalesced_events;
 334         p_common->coalesced_aborts_num = stats.common.tpa_aborts_num;
 335         p_common->non_coalesced_pkts = stats.common.tpa_not_coalesced_pkts;
 336         p_common->coalesced_bytes = stats.common.tpa_coalesced_bytes;
 337
 338         p_common->rx_64_byte_packets = stats.common.rx_64_byte_packets;
 339         p_common->rx_65_to_127_byte_packets =
 340             stats.common.rx_65_to_127_byte_packets;
 341         p_common->rx_128_to_255_byte_packets =
 342             stats.common.rx_128_to_255_byte_packets;
 343         p_common->rx_256_to_511_byte_packets =
 344             stats.common.rx_256_to_511_byte_packets;
 345         p_common->rx_512_to_1023_byte_packets =
 346             stats.common.rx_512_to_1023_byte_packets;
 347         p_common->rx_1024_to_1518_byte_packets =
 348             stats.common.rx_1024_to_1518_byte_packets;
 349         p_common->rx_crc_errors = stats.common.rx_crc_errors;
 350         p_common->rx_mac_crtl_frames = stats.common.rx_mac_crtl_frames;
 351         p_common->rx_pause_frames = stats.common.rx_pause_frames;
 352         p_common->rx_pfc_frames = stats.common.rx_pfc_frames;
 353         p_common->rx_align_errors = stats.common.rx_align_errors;
 354         p_common->rx_carrier_errors = stats.common.rx_carrier_errors;
 355         p_common->rx_oversize_packets = stats.common.rx_oversize_packets;
 356         p_common->rx_jabbers = stats.common.rx_jabbers;
 357         p_common->rx_undersize_packets = stats.common.rx_undersize_packets;
 358         p_common->rx_fragments = stats.common.rx_fragments;
 359         p_common->tx_64_byte_packets = stats.common.tx_64_byte_packets;
 360         p_common->tx_65_to_127_byte_packets =
 361             stats.common.tx_65_to_127_byte_packets;
 362         p_common->tx_128_to_255_byte_packets =
 363             stats.common.tx_128_to_255_byte_packets;
 364         p_common->tx_256_to_511_byte_packets =
 365             stats.common.tx_256_to_511_byte_packets;
 366         p_common->tx_512_to_1023_byte_packets =
 367             stats.common.tx_512_to_1023_byte_packets;
 368         p_common->tx_1024_to_1518_byte_packets =
 369             stats.common.tx_1024_to_1518_byte_packets;
 370         p_common->tx_pause_frames = stats.common.tx_pause_frames;
 371         p_common->tx_pfc_frames = stats.common.tx_pfc_frames;
 372         p_common->brb_truncates = stats.common.brb_truncates;
 373         p_common->brb_discards = stats.common.brb_discards;
 374         p_common->tx_mac_ctrl_frames = stats.common.tx_mac_ctrl_frames;
 375         p_common->link_change_count = stats.common.link_change_count;
 376         p_common->ptp_skip_txts = edev->ptp_skip_txts;
 377
 378         if (QEDE_IS_BB(edev)) {
 379                 struct qede_stats_bb *p_bb = &edev->stats.bb;
 380
 381                 p_bb->rx_1519_to_1522_byte_packets =
 382                     stats.bb.rx_1519_to_1522_byte_packets;
 383                 p_bb->rx_1519_to_2047_byte_packets =
 384                     stats.bb.rx_1519_to_2047_byte_packets;
 385                 p_bb->rx_2048_to_4095_byte_packets =
 386                     stats.bb.rx_2048_to_4095_byte_packets;
 387                 p_bb->rx_4096_to_9216_byte_packets =
 388                     stats.bb.rx_4096_to_9216_byte_packets;
 389                 p_bb->rx_9217_to_16383_byte_packets =
 390                     stats.bb.rx_9217_to_16383_byte_packets;
 391                 p_bb->tx_1519_to_2047_byte_packets =
 392                     stats.bb.tx_1519_to_2047_byte_packets;
 393                 p_bb->tx_2048_to_4095_byte_packets =
 394                     stats.bb.tx_2048_to_4095_byte_packets;
 395                 p_bb->tx_4096_to_9216_byte_packets =
 396                     stats.bb.tx_4096_to_9216_byte_packets;
 397                 p_bb->tx_9217_to_16383_byte_packets =
 398                     stats.bb.tx_9217_to_16383_byte_packets;
 399                 p_bb->tx_lpi_entry_count = stats.bb.tx_lpi_entry_count;
 400                 p_bb->tx_total_collisions = stats.bb.tx_total_collisions;
 401         } else {
 402                 struct qede_stats_ah *p_ah = &edev->stats.ah;
 403
 404                 p_ah->rx_1519_to_max_byte_packets =
 405                     stats.ah.rx_1519_to_max_byte_packets;
 406                 p_ah->tx_1519_to_max_byte_packets =
 407                     stats.ah.tx_1519_to_max_byte_packets;
 408         }
 409
 410         spin_unlock(&edev->stats_lock);
 411 }
 412
 413 static void qede_get_stats64(struct net_device *dev,
 414                              struct rtnl_link_stats64 *stats)
 415 {
 416         struct qede_dev *edev = netdev_priv(dev);
 417         struct qede_stats_common *p_common;
 418
 419         p_common = &edev->stats.common;
 420
 421         spin_lock(&edev->stats_lock);
 422
 423         stats->rx_packets = p_common->rx_ucast_pkts + p_common->rx_mcast_pkts +
 424                             p_common->rx_bcast_pkts;
 425         stats->tx_packets = p_common->tx_ucast_pkts + p_common->tx_mcast_pkts +
 426                             p_common->tx_bcast_pkts;
 427
 428         stats->rx_bytes = p_common->rx_ucast_bytes + p_common->rx_mcast_bytes +
 429                           p_common->rx_bcast_bytes;
 430         stats->tx_bytes = p_common->tx_ucast_bytes + p_common->tx_mcast_bytes +
 431                           p_common->tx_bcast_bytes;
 432
 433         stats->tx_errors = p_common->tx_err_drop_pkts;
 434         stats->multicast = p_common->rx_mcast_pkts + p_common->rx_bcast_pkts;
 435
 436         stats->rx_fifo_errors = p_common->no_buff_discards;
 437
 438         if (QEDE_IS_BB(edev))
 439                 stats->collisions = edev->stats.bb.tx_total_collisions;
 440         stats->rx_crc_errors = p_common->rx_crc_errors;
 441         stats->rx_frame_errors = p_common->rx_align_errors;
 442
 443         spin_unlock(&edev->stats_lock);
 444 }
 445
 446 #ifdef CONFIG_QED_SRIOV
 447 static int qede_get_vf_config(struct net_device *dev, int vfidx,
 448                               struct ifla_vf_info *ivi)
 449 {
 450         struct qede_dev *edev = netdev_priv(dev);
 451
 452         if (!edev->ops)
 453                 return -EINVAL;
 454
 455         return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
 456 }
 457
 458 static int qede_set_vf_rate(struct net_device *dev, int vfidx,
 459                             int min_tx_rate, int max_tx_rate)
 460 {
 461         struct qede_dev *edev = netdev_priv(dev);
 462
 463         return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
 464                                         max_tx_rate);
 465 }
 466
 467 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
 468 {
 469         struct qede_dev *edev = netdev_priv(dev);
 470
 471         if (!edev->ops)
 472                 return -EINVAL;
 473
 474         return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
 475 }
 476
 477 static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
 478                                   int link_state)
 479 {
 480         struct qede_dev *edev = netdev_priv(dev);
 481
 482         if (!edev->ops)
 483                 return -EINVAL;
 484
 485         return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
 486 }
 487
 488 static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
 489 {
 490         struct qede_dev *edev = netdev_priv(dev);
 491
 492         if (!edev->ops)
 493                 return -EINVAL;
 494
 495         return edev->ops->iov->set_trust(edev->cdev, vfidx, setting);
 496 }
 497 #endif
 498
 499 static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 500 {
 501         struct qede_dev *edev = netdev_priv(dev);
 502
 503         if (!netif_running(dev))
 504                 return -EAGAIN;
 505
 506         switch (cmd) {
 507         case SIOCSHWTSTAMP:
 508                 return qede_ptp_hw_ts(edev, ifr);
 509         default:
 510                 DP_VERBOSE(edev, QED_MSG_DEBUG,
 511                            "default IOCTL cmd 0x%x\n", cmd);
 512                 return -EOPNOTSUPP;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static void qede_fp_sb_dump(struct qede_dev *edev, struct qede_fastpath *fp)
 519 {
 520         char *p_sb = (char *)fp->sb_info->sb_virt;
 521         u32 sb_size, i;
 522
 523         sb_size = sizeof(struct status_block);
 524
 525         for (i = 0; i < sb_size; i += 8)
 526                 DP_NOTICE(edev,
 527                           "%02hhX %02hhX %02hhX %02hhX  %02hhX %02hhX %02hhX %02hhX\n",
 528                           p_sb[i], p_sb[i + 1], p_sb[i + 2], p_sb[i + 3],
 529                           p_sb[i + 4], p_sb[i + 5], p_sb[i + 6], p_sb[i + 7]);
 530 }
 531
 532 static void
 533 qede_txq_fp_log_metadata(struct qede_dev *edev,
 534                          struct qede_fastpath *fp, struct qede_tx_queue *txq)
 535 {
 536         struct qed_chain *p_chain = &txq->tx_pbl;
 537
 538         /* Dump txq/fp/sb ids etc. other metadata */
 539         DP_NOTICE(edev,
 540                   "fpid 0x%x sbid 0x%x txqid [0x%x] ndev_qid [0x%x] cos [0x%x] p_chain %p cap %d size %d jiffies %lu HZ 0x%x\n",
 541                   fp->id, fp->sb_info->igu_sb_id, txq->index, txq->ndev_txq_id, txq->cos,
 542                   p_chain, p_chain->capacity, p_chain->size, jiffies, HZ);
 543
 544         /* Dump all the relevant prod/cons indexes */
 545         DP_NOTICE(edev,
 546                   "hw cons %04x sw_tx_prod=0x%x, sw_tx_cons=0x%x, bd_prod 0x%x bd_cons 0x%x\n",
 547                   le16_to_cpu(*txq->hw_cons_ptr), txq->sw_tx_prod, txq->sw_tx_cons,
 548                   qed_chain_get_prod_idx(p_chain), qed_chain_get_cons_idx(p_chain));
 549 }
 550
 551 static void
 552 qede_tx_log_print(struct qede_dev *edev, struct qede_fastpath *fp, struct qede_tx_queue *txq)
 553 {
 554         struct qed_sb_info_dbg sb_dbg;
 555         int rc;
 556
 557         /* sb info */
 558         qede_fp_sb_dump(edev, fp);
 559
 560         memset(&sb_dbg, 0, sizeof(sb_dbg));
 561         rc = edev->ops->common->get_sb_info(edev->cdev, fp->sb_info, (u16)fp->id, &sb_dbg);
 562
 563         DP_NOTICE(edev, "IGU: prod %08x cons %08x CAU Tx %04x\n",
 564                   sb_dbg.igu_prod, sb_dbg.igu_cons, sb_dbg.pi[TX_PI(txq->cos)]);
 565
 566         /* report to mfw */
 567         edev->ops->common->mfw_report(edev->cdev,
 568                                       "Txq[%d]: FW cons [host] %04x, SW cons %04x, SW prod %04x [Jiffies %lu]\n",
 569                                       txq->index, le16_to_cpu(*txq->hw_cons_ptr),
 570                                       qed_chain_get_cons_idx(&txq->tx_pbl),
 571                                       qed_chain_get_prod_idx(&txq->tx_pbl), jiffies);
 572         if (!rc)
 573                 edev->ops->common->mfw_report(edev->cdev,
 574                                               "Txq[%d]: SB[0x%04x] - IGU: prod %08x cons %08x CAU Tx %04x\n",
 575                                               txq->index, fp->sb_info->igu_sb_id,
 576                                               sb_dbg.igu_prod, sb_dbg.igu_cons,
 577                                               sb_dbg.pi[TX_PI(txq->cos)]);
 578 }
 579
 580 static void qede_tx_timeout(struct net_device *dev, unsigned int txqueue)
 581 {
 582         struct qede_dev *edev = netdev_priv(dev);
 583         int i;
 584
 585         netif_carrier_off(dev);
 586         DP_NOTICE(edev, "TX timeout on queue %u!\n", txqueue);
 587
 588         for_each_queue(i) {
 589                 struct qede_tx_queue *txq;
 590                 struct qede_fastpath *fp;
 591                 int cos;
 592
 593                 fp = &edev->fp_array[i];
 594                 if (!(fp->type & QEDE_FASTPATH_TX))
 595                         continue;
 596
 597                 for_each_cos_in_txq(edev, cos) {
 598                         txq = &fp->txq[cos];
 599
 600                         /* Dump basic metadata for all queues */
 601                         qede_txq_fp_log_metadata(edev, fp, txq);
 602
 603                         if (qed_chain_get_cons_idx(&txq->tx_pbl) !=
 604                             qed_chain_get_prod_idx(&txq->tx_pbl))
 605                                 qede_tx_log_print(edev, fp, txq);
 606                 }
 607         }
 608
 609         if (IS_VF(edev))
 610                 return;
 611
 612         if (test_and_set_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags) ||
 613             edev->state == QEDE_STATE_RECOVERY) {
 614                 DP_INFO(edev,
 615                         "Avoid handling a Tx timeout while another HW error is being handled\n");
 616                 return;
 617         }
 618
 619         set_bit(QEDE_ERR_GET_DBG_INFO, &edev->err_flags);
 620         set_bit(QEDE_SP_HW_ERR, &edev->sp_flags);
 621         schedule_delayed_work(&edev->sp_task, 0);
 622 }
 623
 624 static int qede_setup_tc(struct net_device *ndev, u8 num_tc)
 625 {
 626         struct qede_dev *edev = netdev_priv(ndev);
 627         int cos, count, offset;
 628
 629         if (num_tc > edev->dev_info.num_tc)
 630                 return -EINVAL;
 631
 632         netdev_reset_tc(ndev);
 633         netdev_set_num_tc(ndev, num_tc);
 634
 635         for_each_cos_in_txq(edev, cos) {
 636                 count = QEDE_TSS_COUNT(edev);
 637                 offset = cos * QEDE_TSS_COUNT(edev);
 638                 netdev_set_tc_queue(ndev, cos, count, offset);
 639         }
 640
 641         return 0;
 642 }
 643
 644 static int
 645 qede_set_flower(struct qede_dev *edev, struct flow_cls_offload *f,
 646                 __be16 proto)
 647 {
 648         switch (f->command) {
 649         case FLOW_CLS_REPLACE:
 650                 return qede_add_tc_flower_fltr(edev, proto, f);
 651         case FLOW_CLS_DESTROY:
 652                 return qede_delete_flow_filter(edev, f->cookie);
 653         default:
 654                 return -EOPNOTSUPP;
 655         }
 656 }
 657
 658 static int qede_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 659                                   void *cb_priv)
 660 {
 661         struct flow_cls_offload *f;
 662         struct qede_dev *edev = cb_priv;
 663
 664         if (!tc_cls_can_offload_and_chain0(edev->ndev, type_data))
 665                 return -EOPNOTSUPP;
 666
 667         switch (type) {
 668         case TC_SETUP_CLSFLOWER:
 669                 f = type_data;
 670                 return qede_set_flower(edev, f, f->common.protocol);
 671         default:
 672                 return -EOPNOTSUPP;
 673         }
 674 }
 675
 676 static LIST_HEAD(qede_block_cb_list);
 677
 678 static int
 679 qede_setup_tc_offload(struct net_device *dev, enum tc_setup_type type,
 680                       void *type_data)
 681 {
 682         struct qede_dev *edev = netdev_priv(dev);
 683         struct tc_mqprio_qopt *mqprio;
 684
 685         switch (type) {
 686         case TC_SETUP_BLOCK:
 687                 return flow_block_cb_setup_simple(type_data,
 688                                                   &qede_block_cb_list,
 689                                                   qede_setup_tc_block_cb,
 690                                                   edev, edev, true);
 691         case TC_SETUP_QDISC_MQPRIO:
 692                 mqprio = type_data;
 693
 694                 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 695                 return qede_setup_tc(dev, mqprio->num_tc);
 696         default:
 697                 return -EOPNOTSUPP;
 698         }
 699 }
 700
 701 static const struct net_device_ops qede_netdev_ops = {
 702         .ndo_open               = qede_open,
 703         .ndo_stop               = qede_close,
 704         .ndo_start_xmit         = qede_start_xmit,
 705         .ndo_select_queue       = qede_select_queue,
 706         .ndo_set_rx_mode        = qede_set_rx_mode,
 707         .ndo_set_mac_address    = qede_set_mac_addr,
 708         .ndo_validate_addr      = eth_validate_addr,
 709         .ndo_change_mtu         = qede_change_mtu,
 710         .ndo_eth_ioctl          = qede_ioctl,
 711         .ndo_tx_timeout         = qede_tx_timeout,
 712 #ifdef CONFIG_QED_SRIOV
 713         .ndo_set_vf_mac         = qede_set_vf_mac,
 714         .ndo_set_vf_vlan        = qede_set_vf_vlan,
 715         .ndo_set_vf_trust       = qede_set_vf_trust,
 716 #endif
 717         .ndo_vlan_rx_add_vid    = qede_vlan_rx_add_vid,
 718         .ndo_vlan_rx_kill_vid   = qede_vlan_rx_kill_vid,
 719         .ndo_fix_features       = qede_fix_features,
 720         .ndo_set_features       = qede_set_features,
 721         .ndo_get_stats64        = qede_get_stats64,
 722 #ifdef CONFIG_QED_SRIOV
 723         .ndo_set_vf_link_state  = qede_set_vf_link_state,
 724         .ndo_set_vf_spoofchk    = qede_set_vf_spoofchk,
 725         .ndo_get_vf_config      = qede_get_vf_config,
 726         .ndo_set_vf_rate        = qede_set_vf_rate,
 727 #endif
 728         .ndo_features_check     = qede_features_check,
 729         .ndo_bpf                = qede_xdp,
 730 #ifdef CONFIG_RFS_ACCEL
 731         .ndo_rx_flow_steer      = qede_rx_flow_steer,
 732 #endif
 733         .ndo_xdp_xmit           = qede_xdp_transmit,
 734         .ndo_setup_tc           = qede_setup_tc_offload,
 735 };
 736
 737 static const struct net_device_ops qede_netdev_vf_ops = {
 738         .ndo_open               = qede_open,
 739         .ndo_stop               = qede_close,
 740         .ndo_start_xmit         = qede_start_xmit,
 741         .ndo_select_queue       = qede_select_queue,
 742         .ndo_set_rx_mode        = qede_set_rx_mode,
 743         .ndo_set_mac_address    = qede_set_mac_addr,
 744         .ndo_validate_addr      = eth_validate_addr,
 745         .ndo_change_mtu         = qede_change_mtu,
 746         .ndo_vlan_rx_add_vid    = qede_vlan_rx_add_vid,
 747         .ndo_vlan_rx_kill_vid   = qede_vlan_rx_kill_vid,
 748         .ndo_fix_features       = qede_fix_features,
 749         .ndo_set_features       = qede_set_features,
 750         .ndo_get_stats64        = qede_get_stats64,
 751         .ndo_features_check     = qede_features_check,
 752 };
 753
 754 static const struct net_device_ops qede_netdev_vf_xdp_ops = {
 755         .ndo_open               = qede_open,
 756         .ndo_stop               = qede_close,
 757         .ndo_start_xmit         = qede_start_xmit,
 758         .ndo_select_queue       = qede_select_queue,
 759         .ndo_set_rx_mode        = qede_set_rx_mode,
 760         .ndo_set_mac_address    = qede_set_mac_addr,
 761         .ndo_validate_addr      = eth_validate_addr,
 762         .ndo_change_mtu         = qede_change_mtu,
 763         .ndo_vlan_rx_add_vid    = qede_vlan_rx_add_vid,
 764         .ndo_vlan_rx_kill_vid   = qede_vlan_rx_kill_vid,
 765         .ndo_fix_features       = qede_fix_features,
 766         .ndo_set_features       = qede_set_features,
 767         .ndo_get_stats64        = qede_get_stats64,
 768         .ndo_features_check     = qede_features_check,
 769         .ndo_bpf                = qede_xdp,
 770         .ndo_xdp_xmit           = qede_xdp_transmit,
 771 };
 772
 773 /* -------------------------------------------------------------------------
 774  * START OF PROBE / REMOVE
 775  * -------------------------------------------------------------------------
 776  */
 777
 778 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
 779                                             struct pci_dev *pdev,
 780                                             struct qed_dev_eth_info *info,
 781                                             u32 dp_module, u8 dp_level)
 782 {
 783         struct net_device *ndev;
 784         struct qede_dev *edev;
 785
 786         ndev = alloc_etherdev_mqs(sizeof(*edev),
 787                                   info->num_queues * info->num_tc,
 788                                   info->num_queues);
 789         if (!ndev) {
 790                 pr_err("etherdev allocation failed\n");
 791                 return NULL;
 792         }
 793
 794         edev = netdev_priv(ndev);
 795         edev->ndev = ndev;
 796         edev->cdev = cdev;
 797         edev->pdev = pdev;
 798         edev->dp_module = dp_module;
 799         edev->dp_level = dp_level;
 800         edev->ops = qed_ops;
 801
 802         if (is_kdump_kernel()) {
 803                 edev->q_num_rx_buffers = NUM_RX_BDS_KDUMP_MIN;
 804                 edev->q_num_tx_buffers = NUM_TX_BDS_KDUMP_MIN;
 805         } else {
 806                 edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
 807                 edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
 808         }
 809
 810         DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n",
 811                 info->num_queues, info->num_queues);
 812
 813         SET_NETDEV_DEV(ndev, &pdev->dev);
 814
 815         memset(&edev->stats, 0, sizeof(edev->stats));
 816         memcpy(&edev->dev_info, info, sizeof(*info));
 817
 818         /* As ethtool doesn't have the ability to show WoL behavior as
 819          * 'default', if device supports it declare it's enabled.
 820          */
 821         if (edev->dev_info.common.wol_support)
 822                 edev->wol_enabled = true;
 823
 824         INIT_LIST_HEAD(&edev->vlan_list);
 825
 826         return edev;
 827 }
 828
 829 static void qede_init_ndev(struct qede_dev *edev)
 830 {
 831         struct net_device *ndev = edev->ndev;
 832         struct pci_dev *pdev = edev->pdev;
 833         bool udp_tunnel_enable = false;
 834         netdev_features_t hw_features;
 835
 836         pci_set_drvdata(pdev, ndev);
 837
 838         ndev->mem_start = edev->dev_info.common.pci_mem_start;
 839         ndev->base_addr = ndev->mem_start;
 840         ndev->mem_end = edev->dev_info.common.pci_mem_end;
 841         ndev->irq = edev->dev_info.common.pci_irq;
 842
 843         ndev->watchdog_timeo = TX_TIMEOUT;
 844
 845         if (IS_VF(edev)) {
 846                 if (edev->dev_info.xdp_supported)
 847                         ndev->netdev_ops = &qede_netdev_vf_xdp_ops;
 848                 else
 849                         ndev->netdev_ops = &qede_netdev_vf_ops;
 850         } else {
 851                 ndev->netdev_ops = &qede_netdev_ops;
 852         }
 853
 854         qede_set_ethtool_ops(ndev);
 855
 856         ndev->priv_flags |= IFF_UNICAST_FLT;
 857
 858         /* user-changeble features */
 859         hw_features = NETIF_F_GRO | NETIF_F_GRO_HW | NETIF_F_SG |
 860                       NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 861                       NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_TC;
 862
 863         if (edev->dev_info.common.b_arfs_capable)
 864                 hw_features |= NETIF_F_NTUPLE;
 865
 866         if (edev->dev_info.common.vxlan_enable ||
 867             edev->dev_info.common.geneve_enable)
 868                 udp_tunnel_enable = true;
 869
 870         if (udp_tunnel_enable || edev->dev_info.common.gre_enable) {
 871                 hw_features |= NETIF_F_TSO_ECN;
 872                 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 873                                         NETIF_F_SG | NETIF_F_TSO |
 874                                         NETIF_F_TSO_ECN | NETIF_F_TSO6 |
 875                                         NETIF_F_RXCSUM;
 876         }
 877
 878         if (udp_tunnel_enable) {
 879                 hw_features |= (NETIF_F_GSO_UDP_TUNNEL |
 880                                 NETIF_F_GSO_UDP_TUNNEL_CSUM);
 881                 ndev->hw_enc_features |= (NETIF_F_GSO_UDP_TUNNEL |
 882                                           NETIF_F_GSO_UDP_TUNNEL_CSUM);
 883
 884                 qede_set_udp_tunnels(edev);
 885         }
 886
 887         if (edev->dev_info.common.gre_enable) {
 888                 hw_features |= (NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM);
 889                 ndev->hw_enc_features |= (NETIF_F_GSO_GRE |
 890                                           NETIF_F_GSO_GRE_CSUM);
 891         }
 892
 893         ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 894                               NETIF_F_HIGHDMA;
 895         ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 896                          NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
 897                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
 898
 899         ndev->hw_features = hw_features;
 900
 901         ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
 902                              NETDEV_XDP_ACT_NDO_XMIT;
 903
 904         /* MTU range: 46 - 9600 */
 905         ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 906         ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;
 907
 908         /* Set network device HW mac */
 909         eth_hw_addr_set(edev->ndev, edev->dev_info.common.hw_mac);
 910
 911         ndev->mtu = edev->dev_info.common.mtu;
 912 }
 913
 914 /* This function converts from 32b param to two params of level and module
 915  * Input 32b decoding:
 916  * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
 917  * 'happy' flow, e.g. memory allocation failed.
 918  * b30 - enable all INFO prints. INFO prints are for major steps in the flow
 919  * and provide important parameters.
 920  * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
 921  * module. VERBOSE prints are for tracking the specific flow in low level.
 922  *
 923  * Notice that the level should be that of the lowest required logs.
 924  */
 925 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
 926 {
 927         *p_dp_level = QED_LEVEL_NOTICE;
 928         *p_dp_module = 0;
 929
 930         if (debug & QED_LOG_VERBOSE_MASK) {
 931                 *p_dp_level = QED_LEVEL_VERBOSE;
 932                 *p_dp_module = (debug & 0x3FFFFFFF);
 933         } else if (debug & QED_LOG_INFO_MASK) {
 934                 *p_dp_level = QED_LEVEL_INFO;
 935         } else if (debug & QED_LOG_NOTICE_MASK) {
 936                 *p_dp_level = QED_LEVEL_NOTICE;
 937         }
 938 }
 939
 940 static void qede_free_fp_array(struct qede_dev *edev)
 941 {
 942         if (edev->fp_array) {
 943                 struct qede_fastpath *fp;
 944                 int i;
 945
 946                 for_each_queue(i) {
 947                         fp = &edev->fp_array[i];
 948
 949                         kfree(fp->sb_info);
 950                         /* Handle mem alloc failure case where qede_init_fp
 951                          * didn't register xdp_rxq_info yet.
 952                          * Implicit only (fp->type & QEDE_FASTPATH_RX)
 953                          */
 954                         if (fp->rxq && xdp_rxq_info_is_reg(&fp->rxq->xdp_rxq))
 955                                 xdp_rxq_info_unreg(&fp->rxq->xdp_rxq);
 956                         kfree(fp->rxq);
 957                         kfree(fp->xdp_tx);
 958                         kfree(fp->txq);
 959                 }
 960                 kfree(edev->fp_array);
 961         }
 962
 963         edev->num_queues = 0;
 964         edev->fp_num_tx = 0;
 965         edev->fp_num_rx = 0;
 966 }
 967
 968 static int qede_alloc_fp_array(struct qede_dev *edev)
 969 {
 970         u8 fp_combined, fp_rx = edev->fp_num_rx;
 971         struct qede_fastpath *fp;
 972         int i;
 973
 974         edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
 975                                  sizeof(*edev->fp_array), GFP_KERNEL);
 976         if (!edev->fp_array) {
 977                 DP_NOTICE(edev, "fp array allocation failed\n");
 978                 goto err;
 979         }
 980
 981         if (!edev->coal_entry) {
 982                 edev->coal_entry = kcalloc(QEDE_MAX_RSS_CNT(edev),
 983                                            sizeof(*edev->coal_entry),
 984                                            GFP_KERNEL);
 985                 if (!edev->coal_entry) {
 986                         DP_ERR(edev, "coalesce entry allocation failed\n");
 987                         goto err;
 988                 }
 989         }
 990
 991         fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;
 992
 993         /* Allocate the FP elements for Rx queues followed by combined and then
 994          * the Tx. This ordering should be maintained so that the respective
 995          * queues (Rx or Tx) will be together in the fastpath array and the
 996          * associated ids will be sequential.
 997          */
 998         for_each_queue(i) {
 999                 fp = &edev->fp_array[i];
1000
1001                 fp->sb_info = kzalloc(sizeof(*fp->sb_info), GFP_KERNEL);
1002                 if (!fp->sb_info) {
1003                         DP_NOTICE(edev, "sb info struct allocation failed\n");
1004                         goto err;
1005                 }
1006
1007                 if (fp_rx) {
1008                         fp->type = QEDE_FASTPATH_RX;
1009                         fp_rx--;
1010                 } else if (fp_combined) {
1011                         fp->type = QEDE_FASTPATH_COMBINED;
1012                         fp_combined--;
1013                 } else {
1014                         fp->type = QEDE_FASTPATH_TX;
1015                 }
1016
1017                 if (fp->type & QEDE_FASTPATH_TX) {
1018                         fp->txq = kcalloc(edev->dev_info.num_tc,
1019                                           sizeof(*fp->txq), GFP_KERNEL);
1020                         if (!fp->txq)
1021                                 goto err;
1022                 }
1023
1024                 if (fp->type & QEDE_FASTPATH_RX) {
1025                         fp->rxq = kzalloc(sizeof(*fp->rxq), GFP_KERNEL);
1026                         if (!fp->rxq)
1027                                 goto err;
1028
1029                         if (edev->xdp_prog) {
1030                                 fp->xdp_tx = kzalloc(sizeof(*fp->xdp_tx),
1031                                                      GFP_KERNEL);
1032                                 if (!fp->xdp_tx)
1033                                         goto err;
1034                                 fp->type |= QEDE_FASTPATH_XDP;
1035                         }
1036                 }
1037         }
1038
1039         return 0;
1040 err:
1041         qede_free_fp_array(edev);
1042         return -ENOMEM;
1043 }
1044
1045 /* The qede lock is used to protect driver state change and driver flows that
1046  * are not reentrant.
1047  */
1048 void __qede_lock(struct qede_dev *edev)
1049 {
1050         mutex_lock(&edev->qede_lock);
1051 }
1052
1053 void __qede_unlock(struct qede_dev *edev)
1054 {
1055         mutex_unlock(&edev->qede_lock);
1056 }
1057
1058 /* This version of the lock should be used when acquiring the RTNL lock is also
1059  * needed in addition to the internal qede lock.
1060  */
1061 static void qede_lock(struct qede_dev *edev)
1062 {
1063         rtnl_lock();
1064         __qede_lock(edev);
1065 }
1066
1067 static void qede_unlock(struct qede_dev *edev)
1068 {
1069         __qede_unlock(edev);
1070         rtnl_unlock();
1071 }
1072
1073 static void qede_periodic_task(struct work_struct *work)
1074 {
1075         struct qede_dev *edev = container_of(work, struct qede_dev,
1076                                              periodic_task.work);
1077
1078         qede_fill_by_demand_stats(edev);
1079         schedule_delayed_work(&edev->periodic_task, edev->stats_coal_ticks);
1080 }
1081
1082 static void qede_init_periodic_task(struct qede_dev *edev)
1083 {
1084         INIT_DELAYED_WORK(&edev->periodic_task, qede_periodic_task);
1085         spin_lock_init(&edev->stats_lock);
1086         edev->stats_coal_usecs = USEC_PER_SEC;
1087         edev->stats_coal_ticks = usecs_to_jiffies(USEC_PER_SEC);
1088 }
1089
1090 static void qede_sp_task(struct work_struct *work)
1091 {
1092         struct qede_dev *edev = container_of(work, struct qede_dev,
1093                                              sp_task.work);
1094
1095         /* Disable execution of this deferred work once
1096          * qede removal is in progress, this stop any future
1097          * scheduling of sp_task.
1098          */
1099         if (test_bit(QEDE_SP_DISABLE, &edev->sp_flags))
1100                 return;
1101
1102         /* The locking scheme depends on the specific flag:
1103          * In case of QEDE_SP_RECOVERY, acquiring the RTNL lock is required to
1104          * ensure that ongoing flows are ended and new ones are not started.
1105          * In other cases - only the internal qede lock should be acquired.
1106          */
1107
1108         if (test_and_clear_bit(QEDE_SP_RECOVERY, &edev->sp_flags)) {
1109                 cancel_delayed_work_sync(&edev->periodic_task);
1110 #ifdef CONFIG_QED_SRIOV
1111                 /* SRIOV must be disabled outside the lock to avoid a deadlock.
1112                  * The recovery of the active VFs is currently not supported.
1113                  */
1114                 if (pci_num_vf(edev->pdev))
1115                         qede_sriov_configure(edev->pdev, 0);
1116 #endif
1117                 qede_lock(edev);
1118                 qede_recovery_handler(edev);
1119                 qede_unlock(edev);
1120         }
1121
1122         __qede_lock(edev);
1123
1124         if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
1125                 if (edev->state == QEDE_STATE_OPEN)
1126                         qede_config_rx_mode(edev->ndev);
1127
1128 #ifdef CONFIG_RFS_ACCEL
1129         if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) {
1130                 if (edev->state == QEDE_STATE_OPEN)
1131                         qede_process_arfs_filters(edev, false);
1132         }
1133 #endif
1134         if (test_and_clear_bit(QEDE_SP_HW_ERR, &edev->sp_flags))
1135                 qede_generic_hw_err_handler(edev);
1136         __qede_unlock(edev);
1137
1138         if (test_and_clear_bit(QEDE_SP_AER, &edev->sp_flags)) {
1139 #ifdef CONFIG_QED_SRIOV
1140                 /* SRIOV must be disabled outside the lock to avoid a deadlock.
1141                  * The recovery of the active VFs is currently not supported.
1142                  */
1143                 if (pci_num_vf(edev->pdev))
1144                         qede_sriov_configure(edev->pdev, 0);
1145 #endif
1146                 edev->ops->common->recovery_process(edev->cdev);
1147         }
1148 }
1149
1150 static void qede_update_pf_params(struct qed_dev *cdev)
1151 {
1152         struct qed_pf_params pf_params;
1153         u16 num_cons;
1154
1155         /* 64 rx + 64 tx + 64 XDP */
1156         memset(&pf_params, 0, sizeof(struct qed_pf_params));
1157
1158         /* 1 rx + 1 xdp + max tx cos */
1159         num_cons = QED_MIN_L2_CONS;
1160
1161         pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * num_cons;
1162
1163         /* Same for VFs - make sure they'll have sufficient connections
1164          * to support XDP Tx queues.
1165          */
1166         pf_params.eth_pf_params.num_vf_cons = 48;
1167
1168         pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR;
1169         qed_ops->common->update_pf_params(cdev, &pf_params);
1170 }
1171
1172 #define QEDE_FW_VER_STR_SIZE    80
1173
1174 static void qede_log_probe(struct qede_dev *edev)
1175 {
1176         struct qed_dev_info *p_dev_info = &edev->dev_info.common;
1177         u8 buf[QEDE_FW_VER_STR_SIZE];
1178         size_t left_size;
1179
1180         snprintf(buf, QEDE_FW_VER_STR_SIZE,
1181                  "Storm FW %d.%d.%d.%d, Management FW %d.%d.%d.%d",
1182                  p_dev_info->fw_major, p_dev_info->fw_minor, p_dev_info->fw_rev,
1183                  p_dev_info->fw_eng,
1184                  (p_dev_info->mfw_rev & QED_MFW_VERSION_3_MASK) >>
1185                  QED_MFW_VERSION_3_OFFSET,
1186                  (p_dev_info->mfw_rev & QED_MFW_VERSION_2_MASK) >>
1187                  QED_MFW_VERSION_2_OFFSET,
1188                  (p_dev_info->mfw_rev & QED_MFW_VERSION_1_MASK) >>
1189                  QED_MFW_VERSION_1_OFFSET,
1190                  (p_dev_info->mfw_rev & QED_MFW_VERSION_0_MASK) >>
1191                  QED_MFW_VERSION_0_OFFSET);
1192
1193         left_size = QEDE_FW_VER_STR_SIZE - strlen(buf);
1194         if (p_dev_info->mbi_version && left_size)
1195                 snprintf(buf + strlen(buf), left_size,
1196                          " [MBI %d.%d.%d]",
1197                          (p_dev_info->mbi_version & QED_MBI_VERSION_2_MASK) >>
1198                          QED_MBI_VERSION_2_OFFSET,
1199                          (p_dev_info->mbi_version & QED_MBI_VERSION_1_MASK) >>
1200                          QED_MBI_VERSION_1_OFFSET,
1201                          (p_dev_info->mbi_version & QED_MBI_VERSION_0_MASK) >>
1202                          QED_MBI_VERSION_0_OFFSET);
1203
1204         pr_info("qede %02x:%02x.%02x: %s [%s]\n", edev->pdev->bus->number,
1205                 PCI_SLOT(edev->pdev->devfn), PCI_FUNC(edev->pdev->devfn),
1206                 buf, edev->ndev->name);
1207 }
1208
1209 enum qede_probe_mode {
1210         QEDE_PROBE_NORMAL,
1211         QEDE_PROBE_RECOVERY,
1212 };
1213
1214 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
1215                         bool is_vf, enum qede_probe_mode mode)
1216 {
1217         struct qed_probe_params probe_params;
1218         struct qed_slowpath_params sp_params;
1219         struct qed_dev_eth_info dev_info;
1220         struct qede_dev *edev;
1221         struct qed_dev *cdev;
1222         int rc;
1223
1224         if (unlikely(dp_level & QED_LEVEL_INFO))
1225                 pr_notice("Starting qede probe\n");
1226
1227         memset(&probe_params, 0, sizeof(probe_params));
1228         probe_params.protocol = QED_PROTOCOL_ETH;
1229         probe_params.dp_module = dp_module;
1230         probe_params.dp_level = dp_level;
1231         probe_params.is_vf = is_vf;
1232         probe_params.recov_in_prog = (mode == QEDE_PROBE_RECOVERY);
1233         cdev = qed_ops->common->probe(pdev, &probe_params);
1234         if (!cdev) {
1235                 rc = -ENODEV;
1236                 goto err0;
1237         }
1238
1239         qede_update_pf_params(cdev);
1240
1241         /* Start the Slowpath-process */
1242         memset(&sp_params, 0, sizeof(sp_params));
1243         sp_params.int_mode = QED_INT_MODE_MSIX;
1244         strscpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
1245         rc = qed_ops->common->slowpath_start(cdev, &sp_params);
1246         if (rc) {
1247                 pr_notice("Cannot start slowpath\n");
1248                 goto err1;
1249         }
1250
1251         /* Learn information crucial for qede to progress */
1252         rc = qed_ops->fill_dev_info(cdev, &dev_info);
1253         if (rc)
1254                 goto err2;
1255
1256         if (mode != QEDE_PROBE_RECOVERY) {
1257                 edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
1258                                            dp_level);
1259                 if (!edev) {
1260                         rc = -ENOMEM;
1261                         goto err2;
1262                 }
1263
1264                 edev->devlink = qed_ops->common->devlink_register(cdev);
1265                 if (IS_ERR(edev->devlink)) {
1266                         DP_NOTICE(edev, "Cannot register devlink\n");
1267                         rc = PTR_ERR(edev->devlink);
1268                         edev->devlink = NULL;
1269                         goto err3;
1270                 }
1271         } else {
1272                 struct net_device *ndev = pci_get_drvdata(pdev);
1273                 struct qed_devlink *qdl;
1274
1275                 edev = netdev_priv(ndev);
1276                 qdl = devlink_priv(edev->devlink);
1277                 qdl->cdev = cdev;
1278                 edev->cdev = cdev;
1279                 memset(&edev->stats, 0, sizeof(edev->stats));
1280                 memcpy(&edev->dev_info, &dev_info, sizeof(dev_info));
1281         }
1282
1283         if (is_vf)
1284                 set_bit(QEDE_FLAGS_IS_VF, &edev->flags);
1285
1286         qede_init_ndev(edev);
1287
1288         rc = qede_rdma_dev_add(edev, (mode == QEDE_PROBE_RECOVERY));
1289         if (rc)
1290                 goto err3;
1291
1292         if (mode != QEDE_PROBE_RECOVERY) {
1293                 /* Prepare the lock prior to the registration of the netdev,
1294                  * as once it's registered we might reach flows requiring it
1295                  * [it's even possible to reach a flow needing it directly
1296                  * from there, although it's unlikely].
1297                  */
1298                 INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
1299                 mutex_init(&edev->qede_lock);
1300                 qede_init_periodic_task(edev);
1301
1302                 rc = register_netdev(edev->ndev);
1303                 if (rc) {
1304                         DP_NOTICE(edev, "Cannot register net-device\n");
1305                         goto err4;
1306                 }
1307         }
1308
1309         edev->ops->common->set_name(cdev, edev->ndev->name);
1310
1311         /* PTP not supported on VFs */
1312         if (!is_vf)
1313                 qede_ptp_enable(edev);
1314
1315         edev->ops->register_ops(cdev, &qede_ll_ops, edev);
1316
1317 #ifdef CONFIG_DCB
1318         if (!IS_VF(edev))
1319                 qede_set_dcbnl_ops(edev->ndev);
1320 #endif
1321
1322         edev->rx_copybreak = QEDE_RX_HDR_SIZE;
1323
1324         qede_log_probe(edev);
1325
1326         /* retain user config (for example - after recovery) */
1327         if (edev->stats_coal_usecs)
1328                 schedule_delayed_work(&edev->periodic_task, 0);
1329
1330         return 0;
1331
1332 err4:
1333         qede_rdma_dev_remove(edev, (mode == QEDE_PROBE_RECOVERY));
1334 err3:
1335         if (mode != QEDE_PROBE_RECOVERY)
1336                 free_netdev(edev->ndev);
1337         else
1338                 edev->cdev = NULL;
1339 err2:
1340         qed_ops->common->slowpath_stop(cdev);
1341 err1:
1342         qed_ops->common->remove(cdev);
1343 err0:
1344         return rc;
1345 }
1346
1347 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1348 {
1349         bool is_vf = false;
1350         u32 dp_module = 0;
1351         u8 dp_level = 0;
1352
1353         switch ((enum qede_pci_private)id->driver_data) {
1354         case QEDE_PRIVATE_VF:
1355                 if (debug & QED_LOG_VERBOSE_MASK)
1356                         dev_err(&pdev->dev, "Probing a VF\n");
1357                 is_vf = true;
1358                 break;
1359         default:
1360                 if (debug & QED_LOG_VERBOSE_MASK)
1361                         dev_err(&pdev->dev, "Probing a PF\n");
1362         }
1363
1364         qede_config_debug(debug, &dp_module, &dp_level);
1365
1366         return __qede_probe(pdev, dp_module, dp_level, is_vf,
1367                             QEDE_PROBE_NORMAL);
1368 }
1369
1370 enum qede_remove_mode {
1371         QEDE_REMOVE_NORMAL,
1372         QEDE_REMOVE_RECOVERY,
1373 };
1374
1375 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
1376 {
1377         struct net_device *ndev = pci_get_drvdata(pdev);
1378         struct qede_dev *edev;
1379         struct qed_dev *cdev;
1380
1381         if (!ndev) {
1382                 dev_info(&pdev->dev, "Device has already been removed\n");
1383                 return;
1384         }
1385
1386         edev = netdev_priv(ndev);
1387         cdev = edev->cdev;
1388
1389         DP_INFO(edev, "Starting qede_remove\n");
1390
1391         qede_rdma_dev_remove(edev, (mode == QEDE_REMOVE_RECOVERY));
1392
1393         if (mode != QEDE_REMOVE_RECOVERY) {
1394                 set_bit(QEDE_SP_DISABLE, &edev->sp_flags);
1395                 unregister_netdev(ndev);
1396
1397                 cancel_delayed_work_sync(&edev->sp_task);
1398                 cancel_delayed_work_sync(&edev->periodic_task);
1399
1400                 edev->ops->common->set_power_state(cdev, PCI_D0);
1401
1402                 pci_set_drvdata(pdev, NULL);
1403         }
1404
1405         qede_ptp_disable(edev);
1406
1407         /* Use global ops since we've freed edev */
1408         qed_ops->common->slowpath_stop(cdev);
1409         if (system_state == SYSTEM_POWER_OFF)
1410                 return;
1411
1412         if (mode != QEDE_REMOVE_RECOVERY && edev->devlink) {
1413                 qed_ops->common->devlink_unregister(edev->devlink);
1414                 edev->devlink = NULL;
1415         }
1416         qed_ops->common->remove(cdev);
1417         edev->cdev = NULL;
1418
1419         /* Since this can happen out-of-sync with other flows,
1420          * don't release the netdevice until after slowpath stop
1421          * has been called to guarantee various other contexts
1422          * [e.g., QED register callbacks] won't break anything when
1423          * accessing the netdevice.
1424          */
1425         if (mode != QEDE_REMOVE_RECOVERY) {
1426                 kfree(edev->coal_entry);
1427                 free_netdev(ndev);
1428         }
1429
1430         dev_info(&pdev->dev, "Ending qede_remove successfully\n");
1431 }
1432
1433 static void qede_remove(struct pci_dev *pdev)
1434 {
1435         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1436 }
1437
1438 static void qede_shutdown(struct pci_dev *pdev)
1439 {
1440         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1441 }
1442
1443 /* -------------------------------------------------------------------------
1444  * START OF LOAD / UNLOAD
1445  * -------------------------------------------------------------------------
1446  */
1447
1448 static int qede_set_num_queues(struct qede_dev *edev)
1449 {
1450         int rc;
1451         u16 rss_num;
1452
1453         /* Setup queues according to possible resources*/
1454         if (edev->req_queues)
1455                 rss_num = edev->req_queues;
1456         else
1457                 rss_num = netif_get_num_default_rss_queues() *
1458                           edev->dev_info.common.num_hwfns;
1459
1460         rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
1461
1462         rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
1463         if (rc > 0) {
1464                 /* Managed to request interrupts for our queues */
1465                 edev->num_queues = rc;
1466                 DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
1467                         QEDE_QUEUE_CNT(edev), rss_num);
1468                 rc = 0;
1469         }
1470
1471         edev->fp_num_tx = edev->req_num_tx;
1472         edev->fp_num_rx = edev->req_num_rx;
1473
1474         return rc;
1475 }
1476
1477 static void qede_free_mem_sb(struct qede_dev *edev, struct qed_sb_info *sb_info,
1478                              u16 sb_id)
1479 {
1480         if (sb_info->sb_virt) {
1481                 edev->ops->common->sb_release(edev->cdev, sb_info, sb_id,
1482                                               QED_SB_TYPE_L2_QUEUE);
1483                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
1484                                   (void *)sb_info->sb_virt, sb_info->sb_phys);
1485                 memset(sb_info, 0, sizeof(*sb_info));
1486         }
1487 }
1488
1489 /* This function allocates fast-path status block memory */
1490 static int qede_alloc_mem_sb(struct qede_dev *edev,
1491                              struct qed_sb_info *sb_info, u16 sb_id)
1492 {
1493         struct status_block *sb_virt;
1494         dma_addr_t sb_phys;
1495         int rc;
1496
1497         sb_virt = dma_alloc_coherent(&edev->pdev->dev,
1498                                      sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
1499         if (!sb_virt) {
1500                 DP_ERR(edev, "Status block allocation failed\n");
1501                 return -ENOMEM;
1502         }
1503
1504         rc = edev->ops->common->sb_init(edev->cdev, sb_info,
1505                                         sb_virt, sb_phys, sb_id,
1506                                         QED_SB_TYPE_L2_QUEUE);
1507         if (rc) {
1508                 DP_ERR(edev, "Status block initialization failed\n");
1509                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
1510                                   sb_virt, sb_phys);
1511                 return rc;
1512         }
1513
1514         return 0;
1515 }
1516
1517 static void qede_free_rx_buffers(struct qede_dev *edev,
1518                                  struct qede_rx_queue *rxq)
1519 {
1520         u16 i;
1521
1522         for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
1523                 struct sw_rx_data *rx_buf;
1524                 struct page *data;
1525
1526                 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
1527                 data = rx_buf->data;
1528
1529                 dma_unmap_page(&edev->pdev->dev,
1530                                rx_buf->mapping, PAGE_SIZE, rxq->data_direction);
1531
1532                 rx_buf->data = NULL;
1533                 __free_page(data);
1534         }
1535 }
1536
1537 static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1538 {
1539         /* Free rx buffers */
1540         qede_free_rx_buffers(edev, rxq);
1541
1542         /* Free the parallel SW ring */
1543         kfree(rxq->sw_rx_ring);
1544
1545         /* Free the real RQ ring used by FW */
1546         edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
1547         edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
1548 }
1549
1550 static void qede_set_tpa_param(struct qede_rx_queue *rxq)
1551 {
1552         int i;
1553
1554         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1555                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1556
1557                 tpa_info->state = QEDE_AGG_STATE_NONE;
1558         }
1559 }
1560
1561 /* This function allocates all memory needed per Rx queue */
1562 static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1563 {
1564         struct qed_chain_init_params params = {
1565                 .cnt_type       = QED_CHAIN_CNT_TYPE_U16,
1566                 .num_elems      = RX_RING_SIZE,
1567         };
1568         struct qed_dev *cdev = edev->cdev;
1569         int i, rc, size;
1570
1571         rxq->num_rx_buffers = edev->q_num_rx_buffers;
1572
1573         rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;
1574
1575         rxq->rx_headroom = edev->xdp_prog ? XDP_PACKET_HEADROOM : NET_SKB_PAD;
1576         size = rxq->rx_headroom +
1577                SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
1578
1579         /* Make sure that the headroom and  payload fit in a single page */
1580         if (rxq->rx_buf_size + size > PAGE_SIZE)
1581                 rxq->rx_buf_size = PAGE_SIZE - size;
1582
1583         /* Segment size to split a page in multiple equal parts,
1584          * unless XDP is used in which case we'd use the entire page.
1585          */
1586         if (!edev->xdp_prog) {
1587                 size = size + rxq->rx_buf_size;
1588                 rxq->rx_buf_seg_size = roundup_pow_of_two(size);
1589         } else {
1590                 rxq->rx_buf_seg_size = PAGE_SIZE;
1591                 edev->ndev->features &= ~NETIF_F_GRO_HW;
1592         }
1593
1594         /* Allocate the parallel driver ring for Rx buffers */
1595         size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
1596         rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
1597         if (!rxq->sw_rx_ring) {
1598                 DP_ERR(edev, "Rx buffers ring allocation failed\n");
1599                 rc = -ENOMEM;
1600                 goto err;
1601         }
1602
1603         /* Allocate FW Rx ring  */
1604         params.mode = QED_CHAIN_MODE_NEXT_PTR;
1605         params.intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE;
1606         params.elem_size = sizeof(struct eth_rx_bd);
1607
1608         rc = edev->ops->common->chain_alloc(cdev, &rxq->rx_bd_ring, &params);
1609         if (rc)
1610                 goto err;
1611
1612         /* Allocate FW completion ring */
1613         params.mode = QED_CHAIN_MODE_PBL;
1614         params.intended_use = QED_CHAIN_USE_TO_CONSUME;
1615         params.elem_size = sizeof(union eth_rx_cqe);
1616
1617         rc = edev->ops->common->chain_alloc(cdev, &rxq->rx_comp_ring, &params);
1618         if (rc)
1619                 goto err;
1620
1621         /* Allocate buffers for the Rx ring */
1622         rxq->filled_buffers = 0;
1623         for (i = 0; i < rxq->num_rx_buffers; i++) {
1624                 rc = qede_alloc_rx_buffer(rxq, false);
1625                 if (rc) {
1626                         DP_ERR(edev,
1627                                "Rx buffers allocation failed at index %d\n", i);
1628                         goto err;
1629                 }
1630         }
1631
1632         edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO_HW);
1633         if (!edev->gro_disable)
1634                 qede_set_tpa_param(rxq);
1635 err:
1636         return rc;
1637 }
1638
1639 static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1640 {
1641         /* Free the parallel SW ring */
1642         if (txq->is_xdp)
1643                 kfree(txq->sw_tx_ring.xdp);
1644         else
1645                 kfree(txq->sw_tx_ring.skbs);
1646
1647         /* Free the real RQ ring used by FW */
1648         edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
1649 }
1650
1651 /* This function allocates all memory needed per Tx queue */
1652 static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1653 {
1654         struct qed_chain_init_params params = {
1655                 .mode           = QED_CHAIN_MODE_PBL,
1656                 .intended_use   = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1657                 .cnt_type       = QED_CHAIN_CNT_TYPE_U16,
1658                 .num_elems      = edev->q_num_tx_buffers,
1659                 .elem_size      = sizeof(union eth_tx_bd_types),
1660         };
1661         int size, rc;
1662
1663         txq->num_tx_buffers = edev->q_num_tx_buffers;
1664
1665         /* Allocate the parallel driver ring for Tx buffers */
1666         if (txq->is_xdp) {
1667                 size = sizeof(*txq->sw_tx_ring.xdp) * txq->num_tx_buffers;
1668                 txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL);
1669                 if (!txq->sw_tx_ring.xdp)
1670                         goto err;
1671         } else {
1672                 size = sizeof(*txq->sw_tx_ring.skbs) * txq->num_tx_buffers;
1673                 txq->sw_tx_ring.skbs = kzalloc(size, GFP_KERNEL);
1674                 if (!txq->sw_tx_ring.skbs)
1675                         goto err;
1676         }
1677
1678         rc = edev->ops->common->chain_alloc(edev->cdev, &txq->tx_pbl, &params);
1679         if (rc)
1680                 goto err;
1681
1682         return 0;
1683
1684 err:
1685         qede_free_mem_txq(edev, txq);
1686         return -ENOMEM;
1687 }
1688
1689 /* This function frees all memory of a single fp */
1690 static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1691 {
1692         qede_free_mem_sb(edev, fp->sb_info, fp->id);
1693
1694         if (fp->type & QEDE_FASTPATH_RX)
1695                 qede_free_mem_rxq(edev, fp->rxq);
1696
1697         if (fp->type & QEDE_FASTPATH_XDP)
1698                 qede_free_mem_txq(edev, fp->xdp_tx);
1699
1700         if (fp->type & QEDE_FASTPATH_TX) {
1701                 int cos;
1702
1703                 for_each_cos_in_txq(edev, cos)
1704                         qede_free_mem_txq(edev, &fp->txq[cos]);
1705         }
1706 }
1707
1708 /* This function allocates all memory needed for a single fp (i.e. an entity
1709  * which contains status block, one rx queue and/or multiple per-TC tx queues.
1710  */
1711 static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1712 {
1713         int rc = 0;
1714
1715         rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
1716         if (rc)
1717                 goto out;
1718
1719         if (fp->type & QEDE_FASTPATH_RX) {
1720                 rc = qede_alloc_mem_rxq(edev, fp->rxq);
1721                 if (rc)
1722                         goto out;
1723         }
1724
1725         if (fp->type & QEDE_FASTPATH_XDP) {
1726                 rc = qede_alloc_mem_txq(edev, fp->xdp_tx);
1727                 if (rc)
1728                         goto out;
1729         }
1730
1731         if (fp->type & QEDE_FASTPATH_TX) {
1732                 int cos;
1733
1734                 for_each_cos_in_txq(edev, cos) {
1735                         rc = qede_alloc_mem_txq(edev, &fp->txq[cos]);
1736                         if (rc)
1737                                 goto out;
1738                 }
1739         }
1740
1741 out:
1742         return rc;
1743 }
1744
1745 static void qede_free_mem_load(struct qede_dev *edev)
1746 {
1747         int i;
1748
1749         for_each_queue(i) {
1750                 struct qede_fastpath *fp = &edev->fp_array[i];
1751
1752                 qede_free_mem_fp(edev, fp);
1753         }
1754 }
1755
1756 /* This function allocates all qede memory at NIC load. */
1757 static int qede_alloc_mem_load(struct qede_dev *edev)
1758 {
1759         int rc = 0, queue_id;
1760
1761         for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
1762                 struct qede_fastpath *fp = &edev->fp_array[queue_id];
1763
1764                 rc = qede_alloc_mem_fp(edev, fp);
1765                 if (rc) {
1766                         DP_ERR(edev,
1767                                "Failed to allocate memory for fastpath - rss id = %d\n",
1768                                queue_id);
1769                         qede_free_mem_load(edev);
1770                         return rc;
1771                 }
1772         }
1773
1774         return 0;
1775 }
1776
1777 static void qede_empty_tx_queue(struct qede_dev *edev,
1778                                 struct qede_tx_queue *txq)
1779 {
1780         unsigned int pkts_compl = 0, bytes_compl = 0;
1781         struct netdev_queue *netdev_txq;
1782         int rc, len = 0;
1783
1784         netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id);
1785
1786         while (qed_chain_get_cons_idx(&txq->tx_pbl) !=
1787                qed_chain_get_prod_idx(&txq->tx_pbl)) {
1788                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
1789                            "Freeing a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n",
1790                            txq->index, qed_chain_get_cons_idx(&txq->tx_pbl),
1791                            qed_chain_get_prod_idx(&txq->tx_pbl));
1792
1793                 rc = qede_free_tx_pkt(edev, txq, &len);
1794                 if (rc) {
1795                         DP_NOTICE(edev,
1796                                   "Failed to free a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n",
1797                                   txq->index,
1798                                   qed_chain_get_cons_idx(&txq->tx_pbl),
1799                                   qed_chain_get_prod_idx(&txq->tx_pbl));
1800                         break;
1801                 }
1802
1803                 bytes_compl += len;
1804                 pkts_compl++;
1805                 txq->sw_tx_cons++;
1806         }
1807
1808         netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl);
1809 }
1810
1811 static void qede_empty_tx_queues(struct qede_dev *edev)
1812 {
1813         int i;
1814
1815         for_each_queue(i)
1816                 if (edev->fp_array[i].type & QEDE_FASTPATH_TX) {
1817                         int cos;
1818
1819                         for_each_cos_in_txq(edev, cos) {
1820                                 struct qede_fastpath *fp;
1821
1822                                 fp = &edev->fp_array[i];
1823                                 qede_empty_tx_queue(edev,
1824                                                     &fp->txq[cos]);
1825                         }
1826                 }
1827 }
1828
1829 /* This function inits fp content and resets the SB, RXQ and TXQ structures */
1830 static void qede_init_fp(struct qede_dev *edev)
1831 {
1832         int queue_id, rxq_index = 0, txq_index = 0;
1833         struct qede_fastpath *fp;
1834         bool init_xdp = false;
1835
1836         for_each_queue(queue_id) {
1837                 fp = &edev->fp_array[queue_id];
1838
1839                 fp->edev = edev;
1840                 fp->id = queue_id;
1841
1842                 if (fp->type & QEDE_FASTPATH_XDP) {
1843                         fp->xdp_tx->index = QEDE_TXQ_IDX_TO_XDP(edev,
1844                                                                 rxq_index);
1845                         fp->xdp_tx->is_xdp = 1;
1846
1847                         spin_lock_init(&fp->xdp_tx->xdp_tx_lock);
1848                         init_xdp = true;
1849                 }
1850
1851                 if (fp->type & QEDE_FASTPATH_RX) {
1852                         fp->rxq->rxq_id = rxq_index++;
1853
1854                         /* Determine how to map buffers for this queue */
1855                         if (fp->type & QEDE_FASTPATH_XDP)
1856                                 fp->rxq->data_direction = DMA_BIDIRECTIONAL;
1857                         else
1858                                 fp->rxq->data_direction = DMA_FROM_DEVICE;
1859                         fp->rxq->dev = &edev->pdev->dev;
1860
1861                         /* Driver have no error path from here */
1862                         WARN_ON(xdp_rxq_info_reg(&fp->rxq->xdp_rxq, edev->ndev,
1863                                                  fp->rxq->rxq_id, 0) < 0);
1864
1865                         if (xdp_rxq_info_reg_mem_model(&fp->rxq->xdp_rxq,
1866                                                        MEM_TYPE_PAGE_ORDER0,
1867                                                        NULL)) {
1868                                 DP_NOTICE(edev,
1869                                           "Failed to register XDP memory model\n");
1870                         }
1871                 }
1872
1873                 if (fp->type & QEDE_FASTPATH_TX) {
1874                         int cos;
1875
1876                         for_each_cos_in_txq(edev, cos) {
1877                                 struct qede_tx_queue *txq = &fp->txq[cos];
1878                                 u16 ndev_tx_id;
1879
1880                                 txq->cos = cos;
1881                                 txq->index = txq_index;
1882                                 ndev_tx_id = QEDE_TXQ_TO_NDEV_TXQ_ID(edev, txq);
1883                                 txq->ndev_txq_id = ndev_tx_id;
1884
1885                                 if (edev->dev_info.is_legacy)
1886                                         txq->is_legacy = true;
1887                                 txq->dev = &edev->pdev->dev;
1888                         }
1889
1890                         txq_index++;
1891                 }
1892
1893                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1894                          edev->ndev->name, queue_id);
1895         }
1896
1897         if (init_xdp) {
1898                 edev->total_xdp_queues = QEDE_RSS_COUNT(edev);
1899                 DP_INFO(edev, "Total XDP queues: %u\n", edev->total_xdp_queues);
1900         }
1901 }
1902
1903 static int qede_set_real_num_queues(struct qede_dev *edev)
1904 {
1905         int rc = 0;
1906
1907         rc = netif_set_real_num_tx_queues(edev->ndev,
1908                                           QEDE_TSS_COUNT(edev) *
1909                                           edev->dev_info.num_tc);
1910         if (rc) {
1911                 DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
1912                 return rc;
1913         }
1914
1915         rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
1916         if (rc) {
1917                 DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
1918                 return rc;
1919         }
1920
1921         return 0;
1922 }
1923
1924 static void qede_napi_disable_remove(struct qede_dev *edev)
1925 {
1926         int i;
1927
1928         for_each_queue(i) {
1929                 napi_disable(&edev->fp_array[i].napi);
1930
1931                 netif_napi_del(&edev->fp_array[i].napi);
1932         }
1933 }
1934
1935 static void qede_napi_add_enable(struct qede_dev *edev)
1936 {
1937         int i;
1938
1939         /* Add NAPI objects */
1940         for_each_queue(i) {
1941                 netif_napi_add(edev->ndev, &edev->fp_array[i].napi, qede_poll);
1942                 napi_enable(&edev->fp_array[i].napi);
1943         }
1944 }
1945
1946 static void qede_sync_free_irqs(struct qede_dev *edev)
1947 {
1948         int i;
1949
1950         for (i = 0; i < edev->int_info.used_cnt; i++) {
1951                 if (edev->int_info.msix_cnt) {
1952                         free_irq(edev->int_info.msix[i].vector,
1953                                  &edev->fp_array[i]);
1954                 } else {
1955                         edev->ops->common->simd_handler_clean(edev->cdev, i);
1956                 }
1957         }
1958
1959         edev->int_info.used_cnt = 0;
1960         edev->int_info.msix_cnt = 0;
1961 }
1962
1963 static int qede_req_msix_irqs(struct qede_dev *edev)
1964 {
1965         int i, rc;
1966
1967         /* Sanitize number of interrupts == number of prepared RSS queues */
1968         if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
1969                 DP_ERR(edev,
1970                        "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
1971                        QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
1972                 return -EINVAL;
1973         }
1974
1975         for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
1976 #ifdef CONFIG_RFS_ACCEL
1977                 struct qede_fastpath *fp = &edev->fp_array[i];
1978
1979                 if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) {
1980                         rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap,
1981                                               edev->int_info.msix[i].vector);
1982                         if (rc) {
1983                                 DP_ERR(edev, "Failed to add CPU rmap\n");
1984                                 qede_free_arfs(edev);
1985                         }
1986                 }
1987 #endif
1988                 rc = request_irq(edev->int_info.msix[i].vector,
1989                                  qede_msix_fp_int, 0, edev->fp_array[i].name,
1990                                  &edev->fp_array[i]);
1991                 if (rc) {
1992                         DP_ERR(edev, "Request fp %d irq failed\n", i);
1993 #ifdef CONFIG_RFS_ACCEL
1994                         if (edev->ndev->rx_cpu_rmap)
1995                                 free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
1996
1997                         edev->ndev->rx_cpu_rmap = NULL;
1998 #endif
1999                         qede_sync_free_irqs(edev);
2000                         return rc;
2001                 }
2002                 DP_VERBOSE(edev, NETIF_MSG_INTR,
2003                            "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
2004                            edev->fp_array[i].name, i,
2005                            &edev->fp_array[i]);
2006                 edev->int_info.used_cnt++;
2007         }
2008
2009         return 0;
2010 }
2011
2012 static void qede_simd_fp_handler(void *cookie)
2013 {
2014         struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
2015
2016         napi_schedule_irqoff(&fp->napi);
2017 }
2018
2019 static int qede_setup_irqs(struct qede_dev *edev)
2020 {
2021         int i, rc = 0;
2022
2023         /* Learn Interrupt configuration */
2024         rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
2025         if (rc)
2026                 return rc;
2027
2028         if (edev->int_info.msix_cnt) {
2029                 rc = qede_req_msix_irqs(edev);
2030                 if (rc)
2031                         return rc;
2032                 edev->ndev->irq = edev->int_info.msix[0].vector;
2033         } else {
2034                 const struct qed_common_ops *ops;
2035
2036                 /* qed should learn receive the RSS ids and callbacks */
2037                 ops = edev->ops->common;
2038                 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
2039                         ops->simd_handler_config(edev->cdev,
2040                                                  &edev->fp_array[i], i,
2041                                                  qede_simd_fp_handler);
2042                 edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
2043         }
2044         return 0;
2045 }
2046
2047 static int qede_drain_txq(struct qede_dev *edev,
2048                           struct qede_tx_queue *txq, bool allow_drain)
2049 {
2050         int rc, cnt = 1000;
2051
2052         while (txq->sw_tx_cons != txq->sw_tx_prod) {
2053                 if (!cnt) {
2054                         if (allow_drain) {
2055                                 DP_NOTICE(edev,
2056                                           "Tx queue[%d] is stuck, requesting MCP to drain\n",
2057                                           txq->index);
2058                                 rc = edev->ops->common->drain(edev->cdev);
2059                                 if (rc)
2060                                         return rc;
2061                                 return qede_drain_txq(edev, txq, false);
2062                         }
2063                         DP_NOTICE(edev,
2064                                   "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
2065                                   txq->index, txq->sw_tx_prod,
2066                                   txq->sw_tx_cons);
2067                         return -ENODEV;
2068                 }
2069                 cnt--;
2070                 usleep_range(1000, 2000);
2071                 barrier();
2072         }
2073
2074         /* FW finished processing, wait for HW to transmit all tx packets */
2075         usleep_range(1000, 2000);
2076
2077         return 0;
2078 }
2079
2080 static int qede_stop_txq(struct qede_dev *edev,
2081                          struct qede_tx_queue *txq, int rss_id)
2082 {
2083         /* delete doorbell from doorbell recovery mechanism */
2084         edev->ops->common->db_recovery_del(edev->cdev, txq->doorbell_addr,
2085                                            &txq->tx_db);
2086
2087         return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle);
2088 }
2089
2090 static int qede_stop_queues(struct qede_dev *edev)
2091 {
2092         struct qed_update_vport_params *vport_update_params;
2093         struct qed_dev *cdev = edev->cdev;
2094         struct qede_fastpath *fp;
2095         int rc, i;
2096
2097         /* Disable the vport */
2098         vport_update_params = vzalloc(sizeof(*vport_update_params));
2099         if (!vport_update_params)
2100                 return -ENOMEM;
2101
2102         vport_update_params->vport_id = 0;
2103         vport_update_params->update_vport_active_flg = 1;
2104         vport_update_params->vport_active_flg = 0;
2105         vport_update_params->update_rss_flg = 0;
2106
2107         rc = edev->ops->vport_update(cdev, vport_update_params);
2108         vfree(vport_update_params);
2109
2110         if (rc) {
2111                 DP_ERR(edev, "Failed to update vport\n");
2112                 return rc;
2113         }
2114
2115         /* Flush Tx queues. If needed, request drain from MCP */
2116         for_each_queue(i) {
2117                 fp = &edev->fp_array[i];
2118
2119                 if (fp->type & QEDE_FASTPATH_TX) {
2120                         int cos;
2121
2122                         for_each_cos_in_txq(edev, cos) {
2123                                 rc = qede_drain_txq(edev, &fp->txq[cos], true);
2124                                 if (rc)
2125                                         return rc;
2126                         }
2127                 }
2128
2129                 if (fp->type & QEDE_FASTPATH_XDP) {
2130                         rc = qede_drain_txq(edev, fp->xdp_tx, true);
2131                         if (rc)
2132                                 return rc;
2133                 }
2134         }
2135
2136         /* Stop all Queues in reverse order */
2137         for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
2138                 fp = &edev->fp_array[i];
2139
2140                 /* Stop the Tx Queue(s) */
2141                 if (fp->type & QEDE_FASTPATH_TX) {
2142                         int cos;
2143
2144                         for_each_cos_in_txq(edev, cos) {
2145                                 rc = qede_stop_txq(edev, &fp->txq[cos], i);
2146                                 if (rc)
2147                                         return rc;
2148                         }
2149                 }
2150
2151                 /* Stop the Rx Queue */
2152                 if (fp->type & QEDE_FASTPATH_RX) {
2153                         rc = edev->ops->q_rx_stop(cdev, i, fp->rxq->handle);
2154                         if (rc) {
2155                                 DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
2156                                 return rc;
2157                         }
2158                 }
2159
2160                 /* Stop the XDP forwarding queue */
2161                 if (fp->type & QEDE_FASTPATH_XDP) {
2162                         rc = qede_stop_txq(edev, fp->xdp_tx, i);
2163                         if (rc)
2164                                 return rc;
2165
2166                         bpf_prog_put(fp->rxq->xdp_prog);
2167                 }
2168         }
2169
2170         /* Stop the vport */
2171         rc = edev->ops->vport_stop(cdev, 0);
2172         if (rc)
2173                 DP_ERR(edev, "Failed to stop VPORT\n");
2174
2175         return rc;
2176 }
2177
2178 static int qede_start_txq(struct qede_dev *edev,
2179                           struct qede_fastpath *fp,
2180                           struct qede_tx_queue *txq, u8 rss_id, u16 sb_idx)
2181 {
2182         dma_addr_t phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
2183         u32 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
2184         struct qed_queue_start_common_params params;
2185         struct qed_txq_start_ret_params ret_params;
2186         int rc;
2187
2188         memset(&params, 0, sizeof(params));
2189         memset(&ret_params, 0, sizeof(ret_params));
2190
2191         /* Let the XDP queue share the queue-zone with one of the regular txq.
2192          * We don't really care about its coalescing.
2193          */
2194         if (txq->is_xdp)
2195                 params.queue_id = QEDE_TXQ_XDP_TO_IDX(edev, txq);
2196         else
2197                 params.queue_id = txq->index;
2198
2199         params.p_sb = fp->sb_info;
2200         params.sb_idx = sb_idx;
2201         params.tc = txq->cos;
2202
2203         rc = edev->ops->q_tx_start(edev->cdev, rss_id, &params, phys_table,
2204                                    page_cnt, &ret_params);
2205         if (rc) {
2206                 DP_ERR(edev, "Start TXQ #%d failed %d\n", txq->index, rc);
2207                 return rc;
2208         }
2209
2210         txq->doorbell_addr = ret_params.p_doorbell;
2211         txq->handle = ret_params.p_handle;
2212
2213         /* Determine the FW consumer address associated */
2214         txq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[sb_idx];
2215
2216         /* Prepare the doorbell parameters */
2217         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_DEST, DB_DEST_XCM);
2218         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
2219         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_VAL_SEL,
2220                   DQ_XCM_ETH_TX_BD_PROD_CMD);
2221         txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
2222
2223         /* register doorbell with doorbell recovery mechanism */
2224         rc = edev->ops->common->db_recovery_add(edev->cdev, txq->doorbell_addr,
2225                                                 &txq->tx_db, DB_REC_WIDTH_32B,
2226                                                 DB_REC_KERNEL);
2227
2228         return rc;
2229 }
2230
2231 static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
2232 {
2233         int vlan_removal_en = 1;
2234         struct qed_dev *cdev = edev->cdev;
2235         struct qed_dev_info *qed_info = &edev->dev_info.common;
2236         struct qed_update_vport_params *vport_update_params;
2237         struct qed_queue_start_common_params q_params;
2238         struct qed_start_vport_params start = {0};
2239         int rc, i;
2240
2241         if (!edev->num_queues) {
2242                 DP_ERR(edev,
2243                        "Cannot update V-VPORT as active as there are no Rx queues\n");
2244                 return -EINVAL;
2245         }
2246
2247         vport_update_params = vzalloc(sizeof(*vport_update_params));
2248         if (!vport_update_params)
2249                 return -ENOMEM;
2250
2251         start.handle_ptp_pkts = !!(edev->ptp);
2252         start.gro_enable = !edev->gro_disable;
2253         start.mtu = edev->ndev->mtu;
2254         start.vport_id = 0;
2255         start.drop_ttl0 = true;
2256         start.remove_inner_vlan = vlan_removal_en;
2257         start.clear_stats = clear_stats;
2258
2259         rc = edev->ops->vport_start(cdev, &start);
2260
2261         if (rc) {
2262                 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
2263                 goto out;
2264         }
2265
2266         DP_VERBOSE(edev, NETIF_MSG_IFUP,
2267                    "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
2268                    start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
2269
2270         for_each_queue(i) {
2271                 struct qede_fastpath *fp = &edev->fp_array[i];
2272                 dma_addr_t p_phys_table;
2273                 u32 page_cnt;
2274
2275                 if (fp->type & QEDE_FASTPATH_RX) {
2276                         struct qed_rxq_start_ret_params ret_params;
2277                         struct qede_rx_queue *rxq = fp->rxq;
2278                         __le16 *val;
2279
2280                         memset(&ret_params, 0, sizeof(ret_params));
2281                         memset(&q_params, 0, sizeof(q_params));
2282                         q_params.queue_id = rxq->rxq_id;
2283                         q_params.vport_id = 0;
2284                         q_params.p_sb = fp->sb_info;
2285                         q_params.sb_idx = RX_PI;
2286
2287                         p_phys_table =
2288                             qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
2289                         page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);
2290
2291                         rc = edev->ops->q_rx_start(cdev, i, &q_params,
2292                                                    rxq->rx_buf_size,
2293                                                    rxq->rx_bd_ring.p_phys_addr,
2294                                                    p_phys_table,
2295                                                    page_cnt, &ret_params);
2296                         if (rc) {
2297                                 DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
2298                                        rc);
2299                                 goto out;
2300                         }
2301
2302                         /* Use the return parameters */
2303                         rxq->hw_rxq_prod_addr = ret_params.p_prod;
2304                         rxq->handle = ret_params.p_handle;
2305
2306                         val = &fp->sb_info->sb_virt->pi_array[RX_PI];
2307                         rxq->hw_cons_ptr = val;
2308
2309                         qede_update_rx_prod(edev, rxq);
2310                 }
2311
2312                 if (fp->type & QEDE_FASTPATH_XDP) {
2313                         rc = qede_start_txq(edev, fp, fp->xdp_tx, i, XDP_PI);
2314                         if (rc)
2315                                 goto out;
2316
2317                         bpf_prog_add(edev->xdp_prog, 1);
2318                         fp->rxq->xdp_prog = edev->xdp_prog;
2319                 }
2320
2321                 if (fp->type & QEDE_FASTPATH_TX) {
2322                         int cos;
2323
2324                         for_each_cos_in_txq(edev, cos) {
2325                                 rc = qede_start_txq(edev, fp, &fp->txq[cos], i,
2326                                                     TX_PI(cos));
2327                                 if (rc)
2328                                         goto out;
2329                         }
2330                 }
2331         }
2332
2333         /* Prepare and send the vport enable */
2334         vport_update_params->vport_id = start.vport_id;
2335         vport_update_params->update_vport_active_flg = 1;
2336         vport_update_params->vport_active_flg = 1;
2337
2338         if ((qed_info->b_inter_pf_switch || pci_num_vf(edev->pdev)) &&
2339             qed_info->tx_switching) {
2340                 vport_update_params->update_tx_switching_flg = 1;
2341                 vport_update_params->tx_switching_flg = 1;
2342         }
2343
2344         qede_fill_rss_params(edev, &vport_update_params->rss_params,
2345                              &vport_update_params->update_rss_flg);
2346
2347         rc = edev->ops->vport_update(cdev, vport_update_params);
2348         if (rc)
2349                 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
2350
2351 out:
2352         vfree(vport_update_params);
2353         return rc;
2354 }
2355
2356 enum qede_unload_mode {
2357         QEDE_UNLOAD_NORMAL,
2358         QEDE_UNLOAD_RECOVERY,
2359 };
2360
2361 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
2362                         bool is_locked)
2363 {
2364         struct qed_link_params link_params;
2365         int rc;
2366
2367         DP_INFO(edev, "Starting qede unload\n");
2368
2369         if (!is_locked)
2370                 __qede_lock(edev);
2371
2372         clear_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
2373
2374         if (mode != QEDE_UNLOAD_RECOVERY)
2375                 edev->state = QEDE_STATE_CLOSED;
2376
2377         qede_rdma_dev_event_close(edev);
2378
2379         /* Close OS Tx */
2380         netif_tx_disable(edev->ndev);
2381         netif_carrier_off(edev->ndev);
2382
2383         if (mode != QEDE_UNLOAD_RECOVERY) {
2384                 /* Reset the link */
2385                 memset(&link_params, 0, sizeof(link_params));
2386                 link_params.link_up = false;
2387                 edev->ops->common->set_link(edev->cdev, &link_params);
2388
2389                 rc = qede_stop_queues(edev);
2390                 if (rc) {
2391 #ifdef CONFIG_RFS_ACCEL
2392                         if (edev->dev_info.common.b_arfs_capable) {
2393                                 qede_poll_for_freeing_arfs_filters(edev);
2394                                 if (edev->ndev->rx_cpu_rmap)
2395                                         free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
2396
2397                                 edev->ndev->rx_cpu_rmap = NULL;
2398                         }
2399 #endif
2400                         qede_sync_free_irqs(edev);
2401                         goto out;
2402                 }
2403
2404                 DP_INFO(edev, "Stopped Queues\n");
2405         }
2406
2407         qede_vlan_mark_nonconfigured(edev);
2408         edev->ops->fastpath_stop(edev->cdev);
2409
2410         if (edev->dev_info.common.b_arfs_capable) {
2411                 qede_poll_for_freeing_arfs_filters(edev);
2412                 qede_free_arfs(edev);
2413         }
2414
2415         /* Release the interrupts */
2416         qede_sync_free_irqs(edev);
2417         edev->ops->common->set_fp_int(edev->cdev, 0);
2418
2419         qede_napi_disable_remove(edev);
2420
2421         if (mode == QEDE_UNLOAD_RECOVERY)
2422                 qede_empty_tx_queues(edev);
2423
2424         qede_free_mem_load(edev);
2425         qede_free_fp_array(edev);
2426
2427 out:
2428         if (!is_locked)
2429                 __qede_unlock(edev);
2430
2431         if (mode != QEDE_UNLOAD_RECOVERY)
2432                 DP_NOTICE(edev, "Link is down\n");
2433
2434         edev->ptp_skip_txts = 0;
2435
2436         DP_INFO(edev, "Ending qede unload\n");
2437 }
2438
2439 enum qede_load_mode {
2440         QEDE_LOAD_NORMAL,
2441         QEDE_LOAD_RELOAD,
2442         QEDE_LOAD_RECOVERY,
2443 };
2444
2445 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
2446                      bool is_locked)
2447 {
2448         struct qed_link_params link_params;
2449         struct ethtool_coalesce coal = {};
2450         u8 num_tc;
2451         int rc, i;
2452
2453         DP_INFO(edev, "Starting qede load\n");
2454
2455         if (!is_locked)
2456                 __qede_lock(edev);
2457
2458         rc = qede_set_num_queues(edev);
2459         if (rc)
2460                 goto out;
2461
2462         rc = qede_alloc_fp_array(edev);
2463         if (rc)
2464                 goto out;
2465
2466         qede_init_fp(edev);
2467
2468         rc = qede_alloc_mem_load(edev);
2469         if (rc)
2470                 goto err1;
2471         DP_INFO(edev, "Allocated %d Rx, %d Tx queues\n",
2472                 QEDE_RSS_COUNT(edev), QEDE_TSS_COUNT(edev));
2473
2474         rc = qede_set_real_num_queues(edev);
2475         if (rc)
2476                 goto err2;
2477
2478         if (qede_alloc_arfs(edev)) {
2479                 edev->ndev->features &= ~NETIF_F_NTUPLE;
2480                 edev->dev_info.common.b_arfs_capable = false;
2481         }
2482
2483         qede_napi_add_enable(edev);
2484         DP_INFO(edev, "Napi added and enabled\n");
2485
2486         rc = qede_setup_irqs(edev);
2487         if (rc)
2488                 goto err3;
2489         DP_INFO(edev, "Setup IRQs succeeded\n");
2490
2491         rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
2492         if (rc)
2493                 goto err4;
2494         DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
2495
2496         num_tc = netdev_get_num_tc(edev->ndev);
2497         num_tc = num_tc ? num_tc : edev->dev_info.num_tc;
2498         qede_setup_tc(edev->ndev, num_tc);
2499
2500         /* Program un-configured VLANs */
2501         qede_configure_vlan_filters(edev);
2502
2503         set_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
2504
2505         /* Ask for link-up using current configuration */
2506         memset(&link_params, 0, sizeof(link_params));
2507         link_params.link_up = true;
2508         edev->ops->common->set_link(edev->cdev, &link_params);
2509
2510         edev->state = QEDE_STATE_OPEN;
2511
2512         coal.rx_coalesce_usecs = QED_DEFAULT_RX_USECS;
2513         coal.tx_coalesce_usecs = QED_DEFAULT_TX_USECS;
2514
2515         for_each_queue(i) {
2516                 if (edev->coal_entry[i].isvalid) {
2517                         coal.rx_coalesce_usecs = edev->coal_entry[i].rxc;
2518                         coal.tx_coalesce_usecs = edev->coal_entry[i].txc;
2519                 }
2520                 __qede_unlock(edev);
2521                 qede_set_per_coalesce(edev->ndev, i, &coal);
2522                 __qede_lock(edev);
2523         }
2524         DP_INFO(edev, "Ending successfully qede load\n");
2525
2526         goto out;
2527 err4:
2528         qede_sync_free_irqs(edev);
2529 err3:
2530         qede_napi_disable_remove(edev);
2531 err2:
2532         qede_free_mem_load(edev);
2533 err1:
2534         edev->ops->common->set_fp_int(edev->cdev, 0);
2535         qede_free_fp_array(edev);
2536         edev->num_queues = 0;
2537         edev->fp_num_tx = 0;
2538         edev->fp_num_rx = 0;
2539 out:
2540         if (!is_locked)
2541                 __qede_unlock(edev);
2542
2543         return rc;
2544 }
2545
2546 /* 'func' should be able to run between unload and reload assuming interface
2547  * is actually running, or afterwards in case it's currently DOWN.
2548  */
2549 void qede_reload(struct qede_dev *edev,
2550                  struct qede_reload_args *args, bool is_locked)
2551 {
2552         if (!is_locked)
2553                 __qede_lock(edev);
2554
2555         /* Since qede_lock is held, internal state wouldn't change even
2556          * if netdev state would start transitioning. Check whether current
2557          * internal configuration indicates device is up, then reload.
2558          */
2559         if (edev->state == QEDE_STATE_OPEN) {
2560                 qede_unload(edev, QEDE_UNLOAD_NORMAL, true);
2561                 if (args)
2562                         args->func(edev, args);
2563                 qede_load(edev, QEDE_LOAD_RELOAD, true);
2564
2565                 /* Since no one is going to do it for us, re-configure */
2566                 qede_config_rx_mode(edev->ndev);
2567         } else if (args) {
2568                 args->func(edev, args);
2569         }
2570
2571         if (!is_locked)
2572                 __qede_unlock(edev);
2573 }
2574
2575 /* called with rtnl_lock */
2576 static int qede_open(struct net_device *ndev)
2577 {
2578         struct qede_dev *edev = netdev_priv(ndev);
2579         int rc;
2580
2581         netif_carrier_off(ndev);
2582
2583         edev->ops->common->set_power_state(edev->cdev, PCI_D0);
2584
2585         rc = qede_load(edev, QEDE_LOAD_NORMAL, false);
2586         if (rc)
2587                 return rc;
2588
2589         udp_tunnel_nic_reset_ntf(ndev);
2590
2591         edev->ops->common->update_drv_state(edev->cdev, true);
2592
2593         return 0;
2594 }
2595
2596 static int qede_close(struct net_device *ndev)
2597 {
2598         struct qede_dev *edev = netdev_priv(ndev);
2599
2600         qede_unload(edev, QEDE_UNLOAD_NORMAL, false);
2601
2602         if (edev->cdev)
2603                 edev->ops->common->update_drv_state(edev->cdev, false);
2604
2605         return 0;
2606 }
2607
2608 static void qede_link_update(void *dev, struct qed_link_output *link)
2609 {
2610         struct qede_dev *edev = dev;
2611
2612         if (!test_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags)) {
2613                 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not ready\n");
2614                 return;
2615         }
2616
2617         if (link->link_up) {
2618                 if (!netif_carrier_ok(edev->ndev)) {
2619                         DP_NOTICE(edev, "Link is up\n");
2620                         netif_tx_start_all_queues(edev->ndev);
2621                         netif_carrier_on(edev->ndev);
2622                         qede_rdma_dev_event_open(edev);
2623                 }
2624         } else {
2625                 if (netif_carrier_ok(edev->ndev)) {
2626                         DP_NOTICE(edev, "Link is down\n");
2627                         netif_tx_disable(edev->ndev);
2628                         netif_carrier_off(edev->ndev);
2629                         qede_rdma_dev_event_close(edev);
2630                 }
2631         }
2632 }
2633
2634 static void qede_schedule_recovery_handler(void *dev)
2635 {
2636         struct qede_dev *edev = dev;
2637
2638         if (edev->state == QEDE_STATE_RECOVERY) {
2639                 DP_NOTICE(edev,
2640                           "Avoid scheduling a recovery handling since already in recovery state\n");
2641                 return;
2642         }
2643
2644         set_bit(QEDE_SP_RECOVERY, &edev->sp_flags);
2645         schedule_delayed_work(&edev->sp_task, 0);
2646
2647         DP_INFO(edev, "Scheduled a recovery handler\n");
2648 }
2649
2650 static void qede_recovery_failed(struct qede_dev *edev)
2651 {
2652         netdev_err(edev->ndev, "Recovery handling has failed. Power cycle is needed.\n");
2653
2654         netif_device_detach(edev->ndev);
2655
2656         if (edev->cdev)
2657                 edev->ops->common->set_power_state(edev->cdev, PCI_D3hot);
2658 }
2659
2660 static void qede_recovery_handler(struct qede_dev *edev)
2661 {
2662         u32 curr_state = edev->state;
2663         int rc;
2664
2665         DP_NOTICE(edev, "Starting a recovery process\n");
2666
2667         /* No need to acquire first the qede_lock since is done by qede_sp_task
2668          * before calling this function.
2669          */
2670         edev->state = QEDE_STATE_RECOVERY;
2671
2672         edev->ops->common->recovery_prolog(edev->cdev);
2673
2674         if (curr_state == QEDE_STATE_OPEN)
2675                 qede_unload(edev, QEDE_UNLOAD_RECOVERY, true);
2676
2677         __qede_remove(edev->pdev, QEDE_REMOVE_RECOVERY);
2678
2679         rc = __qede_probe(edev->pdev, edev->dp_module, edev->dp_level,
2680                           IS_VF(edev), QEDE_PROBE_RECOVERY);
2681         if (rc) {
2682                 edev->cdev = NULL;
2683                 goto err;
2684         }
2685
2686         if (curr_state == QEDE_STATE_OPEN) {
2687                 rc = qede_load(edev, QEDE_LOAD_RECOVERY, true);
2688                 if (rc)
2689                         goto err;
2690
2691                 qede_config_rx_mode(edev->ndev);
2692                 udp_tunnel_nic_reset_ntf(edev->ndev);
2693         }
2694
2695         edev->state = curr_state;
2696
2697         DP_NOTICE(edev, "Recovery handling is done\n");
2698
2699         return;
2700
2701 err:
2702         qede_recovery_failed(edev);
2703 }
2704
2705 static void qede_atomic_hw_err_handler(struct qede_dev *edev)
2706 {
2707         struct qed_dev *cdev = edev->cdev;
2708
2709         DP_NOTICE(edev,
2710                   "Generic non-sleepable HW error handling started - err_flags 0x%lx\n",
2711                   edev->err_flags);
2712
2713         /* Get a call trace of the flow that led to the error */
2714         WARN_ON(test_bit(QEDE_ERR_WARN, &edev->err_flags));
2715
2716         /* Prevent HW attentions from being reasserted */
2717         if (test_bit(QEDE_ERR_ATTN_CLR_EN, &edev->err_flags))
2718                 edev->ops->common->attn_clr_enable(cdev, true);
2719
2720         DP_NOTICE(edev, "Generic non-sleepable HW error handling is done\n");
2721 }
2722
2723 static void qede_generic_hw_err_handler(struct qede_dev *edev)
2724 {
2725         DP_NOTICE(edev,
2726                   "Generic sleepable HW error handling started - err_flags 0x%lx\n",
2727                   edev->err_flags);
2728
2729         if (edev->devlink) {
2730                 DP_NOTICE(edev, "Reporting fatal error to devlink\n");
2731                 edev->ops->common->report_fatal_error(edev->devlink, edev->last_err_type);
2732         }
2733
2734         clear_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags);
2735
2736         DP_NOTICE(edev, "Generic sleepable HW error handling is done\n");
2737 }
2738
2739 static void qede_set_hw_err_flags(struct qede_dev *edev,
2740                                   enum qed_hw_err_type err_type)
2741 {
2742         unsigned long err_flags = 0;
2743
2744         switch (err_type) {
2745         case QED_HW_ERR_DMAE_FAIL:
2746                 set_bit(QEDE_ERR_WARN, &err_flags);
2747                 fallthrough;
2748         case QED_HW_ERR_MFW_RESP_FAIL:
2749         case QED_HW_ERR_HW_ATTN:
2750         case QED_HW_ERR_RAMROD_FAIL:
2751         case QED_HW_ERR_FW_ASSERT:
2752                 set_bit(QEDE_ERR_ATTN_CLR_EN, &err_flags);
2753                 set_bit(QEDE_ERR_GET_DBG_INFO, &err_flags);
2754                 /* make this error as recoverable and start recovery*/
2755                 set_bit(QEDE_ERR_IS_RECOVERABLE, &err_flags);
2756                 break;
2757
2758         default:
2759                 DP_NOTICE(edev, "Unexpected HW error [%d]\n", err_type);
2760                 break;
2761         }
2762
2763         edev->err_flags |= err_flags;
2764 }
2765
2766 static void qede_schedule_hw_err_handler(void *dev,
2767                                          enum qed_hw_err_type err_type)
2768 {
2769         struct qede_dev *edev = dev;
2770
2771         /* Fan failure cannot be masked by handling of another HW error or by a
2772          * concurrent recovery process.
2773          */
2774         if ((test_and_set_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags) ||
2775              edev->state == QEDE_STATE_RECOVERY) &&
2776              err_type != QED_HW_ERR_FAN_FAIL) {
2777                 DP_INFO(edev,
2778                         "Avoid scheduling an error handling while another HW error is being handled\n");
2779                 return;
2780         }
2781
2782         if (err_type >= QED_HW_ERR_LAST) {
2783                 DP_NOTICE(edev, "Unknown HW error [%d]\n", err_type);
2784                 clear_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags);
2785                 return;
2786         }
2787
2788         edev->last_err_type = err_type;
2789         qede_set_hw_err_flags(edev, err_type);
2790         qede_atomic_hw_err_handler(edev);
2791         set_bit(QEDE_SP_HW_ERR, &edev->sp_flags);
2792         schedule_delayed_work(&edev->sp_task, 0);
2793
2794         DP_INFO(edev, "Scheduled a error handler [err_type %d]\n", err_type);
2795 }
2796
2797 static bool qede_is_txq_full(struct qede_dev *edev, struct qede_tx_queue *txq)
2798 {
2799         struct netdev_queue *netdev_txq;
2800
2801         netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id);
2802         if (netif_xmit_stopped(netdev_txq))
2803                 return true;
2804
2805         return false;
2806 }
2807
2808 static void qede_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
2809 {
2810         struct qede_dev *edev = dev;
2811         struct netdev_hw_addr *ha;
2812         int i;
2813
2814         if (edev->ndev->features & NETIF_F_IP_CSUM)
2815                 data->feat_flags |= QED_TLV_IP_CSUM;
2816         if (edev->ndev->features & NETIF_F_TSO)
2817                 data->feat_flags |= QED_TLV_LSO;
2818
2819         ether_addr_copy(data->mac[0], edev->ndev->dev_addr);
2820         eth_zero_addr(data->mac[1]);
2821         eth_zero_addr(data->mac[2]);
2822         /* Copy the first two UC macs */
2823         netif_addr_lock_bh(edev->ndev);
2824         i = 1;
2825         netdev_for_each_uc_addr(ha, edev->ndev) {
2826                 ether_addr_copy(data->mac[i++], ha->addr);
2827                 if (i == QED_TLV_MAC_COUNT)
2828                         break;
2829         }
2830
2831         netif_addr_unlock_bh(edev->ndev);
2832 }
2833
2834 static void qede_get_eth_tlv_data(void *dev, void *data)
2835 {
2836         struct qed_mfw_tlv_eth *etlv = data;
2837         struct qede_dev *edev = dev;
2838         struct qede_fastpath *fp;
2839         int i;
2840
2841         etlv->lso_maxoff_size = 0XFFFF;
2842         etlv->lso_maxoff_size_set = true;
2843         etlv->lso_minseg_size = (u16)ETH_TX_LSO_WINDOW_MIN_LEN;
2844         etlv->lso_minseg_size_set = true;
2845         etlv->prom_mode = !!(edev->ndev->flags & IFF_PROMISC);
2846         etlv->prom_mode_set = true;
2847         etlv->tx_descr_size = QEDE_TSS_COUNT(edev);
2848         etlv->tx_descr_size_set = true;
2849         etlv->rx_descr_size = QEDE_RSS_COUNT(edev);
2850         etlv->rx_descr_size_set = true;
2851         etlv->iov_offload = QED_MFW_TLV_IOV_OFFLOAD_VEB;
2852         etlv->iov_offload_set = true;
2853
2854         /* Fill information regarding queues; Should be done under the qede
2855          * lock to guarantee those don't change beneath our feet.
2856          */
2857         etlv->txqs_empty = true;
2858         etlv->rxqs_empty = true;
2859         etlv->num_txqs_full = 0;
2860         etlv->num_rxqs_full = 0;
2861
2862         __qede_lock(edev);
2863         for_each_queue(i) {
2864                 fp = &edev->fp_array[i];
2865                 if (fp->type & QEDE_FASTPATH_TX) {
2866                         struct qede_tx_queue *txq = QEDE_FP_TC0_TXQ(fp);
2867
2868                         if (txq->sw_tx_cons != txq->sw_tx_prod)
2869                                 etlv->txqs_empty = false;
2870                         if (qede_is_txq_full(edev, txq))
2871                                 etlv->num_txqs_full++;
2872                 }
2873                 if (fp->type & QEDE_FASTPATH_RX) {
2874                         if (qede_has_rx_work(fp->rxq))
2875                                 etlv->rxqs_empty = false;
2876
2877                         /* This one is a bit tricky; Firmware might stop
2878                          * placing packets if ring is not yet full.
2879                          * Give an approximation.
2880                          */
2881                         if (le16_to_cpu(*fp->rxq->hw_cons_ptr) -
2882                             qed_chain_get_cons_idx(&fp->rxq->rx_comp_ring) >
2883                             RX_RING_SIZE - 100)
2884                                 etlv->num_rxqs_full++;
2885                 }
2886         }
2887         __qede_unlock(edev);
2888
2889         etlv->txqs_empty_set = true;
2890         etlv->rxqs_empty_set = true;
2891         etlv->num_txqs_full_set = true;
2892         etlv->num_rxqs_full_set = true;
2893 }
2894
2895 /**
2896  * qede_io_error_detected(): Called when PCI error is detected
2897  *
2898  * @pdev: Pointer to PCI device
2899  * @state: The current pci connection state
2900  *
2901  *Return: pci_ers_result_t.
2902  *
2903  * This function is called after a PCI bus error affecting
2904  * this device has been detected.
2905  */
2906 static pci_ers_result_t
2907 qede_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2908 {
2909         struct net_device *dev = pci_get_drvdata(pdev);
2910         struct qede_dev *edev = netdev_priv(dev);
2911
2912         if (!edev)
2913                 return PCI_ERS_RESULT_NONE;
2914
2915         DP_NOTICE(edev, "IO error detected [%d]\n", state);
2916
2917         __qede_lock(edev);
2918         if (edev->state == QEDE_STATE_RECOVERY) {
2919                 DP_NOTICE(edev, "Device already in the recovery state\n");
2920                 __qede_unlock(edev);
2921                 return PCI_ERS_RESULT_NONE;
2922         }
2923
2924         /* PF handles the recovery of its VFs */
2925         if (IS_VF(edev)) {
2926                 DP_VERBOSE(edev, QED_MSG_IOV,
2927                            "VF recovery is handled by its PF\n");
2928                 __qede_unlock(edev);
2929                 return PCI_ERS_RESULT_RECOVERED;
2930         }
2931
2932         /* Close OS Tx */
2933         netif_tx_disable(edev->ndev);
2934         netif_carrier_off(edev->ndev);
2935
2936         set_bit(QEDE_SP_AER, &edev->sp_flags);
2937         schedule_delayed_work(&edev->sp_task, 0);
2938
2939         __qede_unlock(edev);
2940
2941         return PCI_ERS_RESULT_CAN_RECOVER;
2942 }