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 <linux/aer.h>
  39 #include "qede.h"
  40 #include "qede_ptp.h"
  41
  42 static char version[] =
  43         "QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
  44
  45 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
  46 MODULE_LICENSE("GPL");
  47 MODULE_VERSION(DRV_MODULE_VERSION);
  48
  49 static uint debug;
  50 module_param(debug, uint, 0);
  51 MODULE_PARM_DESC(debug, " Default debug msglevel");
  52
  53 static const struct qed_eth_ops *qed_ops;
  54
  55 #define CHIP_NUM_57980S_40              0x1634
  56 #define CHIP_NUM_57980S_10              0x1666
  57 #define CHIP_NUM_57980S_MF              0x1636
  58 #define CHIP_NUM_57980S_100             0x1644
  59 #define CHIP_NUM_57980S_50              0x1654
  60 #define CHIP_NUM_57980S_25              0x1656
  61 #define CHIP_NUM_57980S_IOV             0x1664
  62 #define CHIP_NUM_AH                     0x8070
  63 #define CHIP_NUM_AH_IOV                 0x8090
  64
  65 #ifndef PCI_DEVICE_ID_NX2_57980E
  66 #define PCI_DEVICE_ID_57980S_40         CHIP_NUM_57980S_40
  67 #define PCI_DEVICE_ID_57980S_10         CHIP_NUM_57980S_10
  68 #define PCI_DEVICE_ID_57980S_MF         CHIP_NUM_57980S_MF
  69 #define PCI_DEVICE_ID_57980S_100        CHIP_NUM_57980S_100
  70 #define PCI_DEVICE_ID_57980S_50         CHIP_NUM_57980S_50
  71 #define PCI_DEVICE_ID_57980S_25         CHIP_NUM_57980S_25
  72 #define PCI_DEVICE_ID_57980S_IOV        CHIP_NUM_57980S_IOV
  73 #define PCI_DEVICE_ID_AH                CHIP_NUM_AH
  74 #define PCI_DEVICE_ID_AH_IOV            CHIP_NUM_AH_IOV
  75
  76 #endif
  77
  78 enum qede_pci_private {
  79         QEDE_PRIVATE_PF,
  80         QEDE_PRIVATE_VF
  81 };
  82
  83 static const struct pci_device_id qede_pci_tbl[] = {
  84         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
  85         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
  86         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
  87         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
  88         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
  89         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
  90 #ifdef CONFIG_QED_SRIOV
  91         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
  92 #endif
  93         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH), QEDE_PRIVATE_PF},
  94 #ifdef CONFIG_QED_SRIOV
  95         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH_IOV), QEDE_PRIVATE_VF},
  96 #endif
  97         { 0 }
  98 };
  99
 100 MODULE_DEVICE_TABLE(pci, qede_pci_tbl);
 101
 102 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
 103 static pci_ers_result_t
 104 qede_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state);
 105
 106 #define TX_TIMEOUT              (5 * HZ)
 107
 108 /* Utilize last protocol index for XDP */
 109 #define XDP_PI  11
 110
 111 static void qede_remove(struct pci_dev *pdev);
 112 static void qede_shutdown(struct pci_dev *pdev);
 113 static void qede_link_update(void *dev, struct qed_link_output *link);
 114 static void qede_schedule_recovery_handler(void *dev);
 115 static void qede_recovery_handler(struct qede_dev *edev);
 116 static void qede_schedule_hw_err_handler(void *dev,
 117                                          enum qed_hw_err_type err_type);
 118 static void qede_get_eth_tlv_data(void *edev, void *data);
 119 static void qede_get_generic_tlv_data(void *edev,
 120                                       struct qed_generic_tlvs *data);
 121 static void qede_generic_hw_err_handler(struct qede_dev *edev);
 122 #ifdef CONFIG_QED_SRIOV
 123 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos,
 124                             __be16 vlan_proto)
 125 {
 126         struct qede_dev *edev = netdev_priv(ndev);
 127
 128         if (vlan > 4095) {
 129                 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
 130                 return -EINVAL;
 131         }
 132
 133         if (vlan_proto != htons(ETH_P_8021Q))
 134                 return -EPROTONOSUPPORT;
 135
 136         DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
 137                    vlan, vf);
 138
 139         return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
 140 }
 141
 142 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
 143 {
 144         struct qede_dev *edev = netdev_priv(ndev);
 145
 146         DP_VERBOSE(edev, QED_MSG_IOV, "Setting MAC %pM to VF [%d]\n", mac, vfidx);
 147
 148         if (!is_valid_ether_addr(mac)) {
 149                 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
 150                 return -EINVAL;
 151         }
 152
 153         return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
 154 }
 155
 156 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
 157 {
 158         struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
 159         struct qed_dev_info *qed_info = &edev->dev_info.common;
 160         struct qed_update_vport_params *vport_params;
 161         int rc;
 162
 163         vport_params = vzalloc(sizeof(*vport_params));
 164         if (!vport_params)
 165                 return -ENOMEM;
 166         DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);
 167
 168         rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);
 169
 170         /* Enable/Disable Tx switching for PF */
 171         if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
 172             !qed_info->b_inter_pf_switch && qed_info->tx_switching) {
 173                 vport_params->vport_id = 0;
 174                 vport_params->update_tx_switching_flg = 1;
 175                 vport_params->tx_switching_flg = num_vfs_param ? 1 : 0;
 176                 edev->ops->vport_update(edev->cdev, vport_params);
 177         }
 178
 179         vfree(vport_params);
 180         return rc;
 181 }
 182 #endif
 183
 184 static const struct pci_error_handlers qede_err_handler = {
 185         .error_detected = qede_io_error_detected,
 186 };
 187
 188 static struct pci_driver qede_pci_driver = {
 189         .name = "qede",
 190         .id_table = qede_pci_tbl,
 191         .probe = qede_probe,
 192         .remove = qede_remove,
 193         .shutdown = qede_shutdown,
 194 #ifdef CONFIG_QED_SRIOV
 195         .sriov_configure = qede_sriov_configure,
 196 #endif
 197         .err_handler = &qede_err_handler,
 198 };
 199
 200 static struct qed_eth_cb_ops qede_ll_ops = {
 201         {
 202 #ifdef CONFIG_RFS_ACCEL
 203                 .arfs_filter_op = qede_arfs_filter_op,
 204 #endif
 205                 .link_update = qede_link_update,
 206                 .schedule_recovery_handler = qede_schedule_recovery_handler,
 207                 .schedule_hw_err_handler = qede_schedule_hw_err_handler,
 208                 .get_generic_tlv_data = qede_get_generic_tlv_data,
 209                 .get_protocol_tlv_data = qede_get_eth_tlv_data,
 210         },
 211         .force_mac = qede_force_mac,
 212         .ports_update = qede_udp_ports_update,
 213 };
 214
 215 static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 216                              void *ptr)
 217 {
 218         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 219         struct ethtool_drvinfo drvinfo;
 220         struct qede_dev *edev;
 221
 222         if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
 223                 goto done;
 224
 225         /* Check whether this is a qede device */
 226         if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
 227                 goto done;
 228
 229         memset(&drvinfo, 0, sizeof(drvinfo));
 230         ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
 231         if (strcmp(drvinfo.driver, "qede"))
 232                 goto done;
 233         edev = netdev_priv(ndev);
 234
 235         switch (event) {
 236         case NETDEV_CHANGENAME:
 237                 /* Notify qed of the name change */
 238                 if (!edev->ops || !edev->ops->common)
 239                         goto done;
 240                 edev->ops->common->set_name(edev->cdev, edev->ndev->name);
 241                 break;
 242         case NETDEV_CHANGEADDR:
 243                 edev = netdev_priv(ndev);
 244                 qede_rdma_event_changeaddr(edev);
 245                 break;
 246         }
 247
 248 done:
 249         return NOTIFY_DONE;
 250 }
 251
 252 static struct notifier_block qede_netdev_notifier = {
 253         .notifier_call = qede_netdev_event,
 254 };
 255
 256 static
 257 int __init qede_init(void)
 258 {
 259         int ret;
 260
 261         pr_info("qede_init: %s\n", version);
 262
 263         qede_forced_speed_maps_init();
 264
 265         qed_ops = qed_get_eth_ops();
 266         if (!qed_ops) {
 267                 pr_notice("Failed to get qed ethtool operations\n");
 268                 return -EINVAL;
 269         }
 270
 271         /* Must register notifier before pci ops, since we might miss
 272          * interface rename after pci probe and netdev registration.
 273          */
 274         ret = register_netdevice_notifier(&qede_netdev_notifier);
 275         if (ret) {
 276                 pr_notice("Failed to register netdevice_notifier\n");
 277                 qed_put_eth_ops();
 278                 return -EINVAL;
 279         }
 280
 281         ret = pci_register_driver(&qede_pci_driver);
 282         if (ret) {
 283                 pr_notice("Failed to register driver\n");
 284                 unregister_netdevice_notifier(&qede_netdev_notifier);
 285                 qed_put_eth_ops();
 286                 return -EINVAL;
 287         }
 288
 289         return 0;
 290 }
 291
 292 static void __exit qede_cleanup(void)
 293 {
 294         if (debug & QED_LOG_INFO_MASK)
 295                 pr_info("qede_cleanup called\n");
 296
 297         unregister_netdevice_notifier(&qede_netdev_notifier);
 298         pci_unregister_driver(&qede_pci_driver);
 299         qed_put_eth_ops();
 300 }
 301
 302 module_init(qede_init);
 303 module_exit(qede_cleanup);
 304
 305 static int qede_open(struct net_device *ndev);
 306 static int qede_close(struct net_device *ndev);
 307
 308 void qede_fill_by_demand_stats(struct qede_dev *edev)
 309 {
 310         struct qede_stats_common *p_common = &edev->stats.common;
 311         struct qed_eth_stats stats;
 312
 313         edev->ops->get_vport_stats(edev->cdev, &stats);
 314
 315         p_common->no_buff_discards = stats.common.no_buff_discards;
 316         p_common->packet_too_big_discard = stats.common.packet_too_big_discard;
 317         p_common->ttl0_discard = stats.common.ttl0_discard;
 318         p_common->rx_ucast_bytes = stats.common.rx_ucast_bytes;
 319         p_common->rx_mcast_bytes = stats.common.rx_mcast_bytes;
 320         p_common->rx_bcast_bytes = stats.common.rx_bcast_bytes;
 321         p_common->rx_ucast_pkts = stats.common.rx_ucast_pkts;
 322         p_common->rx_mcast_pkts = stats.common.rx_mcast_pkts;
 323         p_common->rx_bcast_pkts = stats.common.rx_bcast_pkts;
 324         p_common->mftag_filter_discards = stats.common.mftag_filter_discards;
 325         p_common->mac_filter_discards = stats.common.mac_filter_discards;
 326         p_common->gft_filter_drop = stats.common.gft_filter_drop;
 327
 328         p_common->tx_ucast_bytes = stats.common.tx_ucast_bytes;
 329         p_common->tx_mcast_bytes = stats.common.tx_mcast_bytes;
 330         p_common->tx_bcast_bytes = stats.common.tx_bcast_bytes;
 331         p_common->tx_ucast_pkts = stats.common.tx_ucast_pkts;
 332         p_common->tx_mcast_pkts = stats.common.tx_mcast_pkts;
 333         p_common->tx_bcast_pkts = stats.common.tx_bcast_pkts;
 334         p_common->tx_err_drop_pkts = stats.common.tx_err_drop_pkts;
 335         p_common->coalesced_pkts = stats.common.tpa_coalesced_pkts;
 336         p_common->coalesced_events = stats.common.tpa_coalesced_events;
 337         p_common->coalesced_aborts_num = stats.common.tpa_aborts_num;
 338         p_common->non_coalesced_pkts = stats.common.tpa_not_coalesced_pkts;
 339         p_common->coalesced_bytes = stats.common.tpa_coalesced_bytes;
 340
 341         p_common->rx_64_byte_packets = stats.common.rx_64_byte_packets;
 342         p_common->rx_65_to_127_byte_packets =
 343             stats.common.rx_65_to_127_byte_packets;
 344         p_common->rx_128_to_255_byte_packets =
 345             stats.common.rx_128_to_255_byte_packets;
 346         p_common->rx_256_to_511_byte_packets =
 347             stats.common.rx_256_to_511_byte_packets;
 348         p_common->rx_512_to_1023_byte_packets =
 349             stats.common.rx_512_to_1023_byte_packets;
 350         p_common->rx_1024_to_1518_byte_packets =
 351             stats.common.rx_1024_to_1518_byte_packets;
 352         p_common->rx_crc_errors = stats.common.rx_crc_errors;
 353         p_common->rx_mac_crtl_frames = stats.common.rx_mac_crtl_frames;
 354         p_common->rx_pause_frames = stats.common.rx_pause_frames;
 355         p_common->rx_pfc_frames = stats.common.rx_pfc_frames;
 356         p_common->rx_align_errors = stats.common.rx_align_errors;
 357         p_common->rx_carrier_errors = stats.common.rx_carrier_errors;
 358         p_common->rx_oversize_packets = stats.common.rx_oversize_packets;
 359         p_common->rx_jabbers = stats.common.rx_jabbers;
 360         p_common->rx_undersize_packets = stats.common.rx_undersize_packets;
 361         p_common->rx_fragments = stats.common.rx_fragments;
 362         p_common->tx_64_byte_packets = stats.common.tx_64_byte_packets;
 363         p_common->tx_65_to_127_byte_packets =
 364             stats.common.tx_65_to_127_byte_packets;
 365         p_common->tx_128_to_255_byte_packets =
 366             stats.common.tx_128_to_255_byte_packets;
 367         p_common->tx_256_to_511_byte_packets =
 368             stats.common.tx_256_to_511_byte_packets;
 369         p_common->tx_512_to_1023_byte_packets =
 370             stats.common.tx_512_to_1023_byte_packets;
 371         p_common->tx_1024_to_1518_byte_packets =
 372             stats.common.tx_1024_to_1518_byte_packets;
 373         p_common->tx_pause_frames = stats.common.tx_pause_frames;
 374         p_common->tx_pfc_frames = stats.common.tx_pfc_frames;
 375         p_common->brb_truncates = stats.common.brb_truncates;
 376         p_common->brb_discards = stats.common.brb_discards;
 377         p_common->tx_mac_ctrl_frames = stats.common.tx_mac_ctrl_frames;
 378         p_common->link_change_count = stats.common.link_change_count;
 379         p_common->ptp_skip_txts = edev->ptp_skip_txts;
 380
 381         if (QEDE_IS_BB(edev)) {
 382                 struct qede_stats_bb *p_bb = &edev->stats.bb;
 383
 384                 p_bb->rx_1519_to_1522_byte_packets =
 385                     stats.bb.rx_1519_to_1522_byte_packets;
 386                 p_bb->rx_1519_to_2047_byte_packets =
 387                     stats.bb.rx_1519_to_2047_byte_packets;
 388                 p_bb->rx_2048_to_4095_byte_packets =
 389                     stats.bb.rx_2048_to_4095_byte_packets;
 390                 p_bb->rx_4096_to_9216_byte_packets =
 391                     stats.bb.rx_4096_to_9216_byte_packets;
 392                 p_bb->rx_9217_to_16383_byte_packets =
 393                     stats.bb.rx_9217_to_16383_byte_packets;
 394                 p_bb->tx_1519_to_2047_byte_packets =
 395                     stats.bb.tx_1519_to_2047_byte_packets;
 396                 p_bb->tx_2048_to_4095_byte_packets =
 397                     stats.bb.tx_2048_to_4095_byte_packets;
 398                 p_bb->tx_4096_to_9216_byte_packets =
 399                     stats.bb.tx_4096_to_9216_byte_packets;
 400                 p_bb->tx_9217_to_16383_byte_packets =
 401                     stats.bb.tx_9217_to_16383_byte_packets;
 402                 p_bb->tx_lpi_entry_count = stats.bb.tx_lpi_entry_count;
 403                 p_bb->tx_total_collisions = stats.bb.tx_total_collisions;
 404         } else {
 405                 struct qede_stats_ah *p_ah = &edev->stats.ah;
 406
 407                 p_ah->rx_1519_to_max_byte_packets =
 408                     stats.ah.rx_1519_to_max_byte_packets;
 409                 p_ah->tx_1519_to_max_byte_packets =
 410                     stats.ah.tx_1519_to_max_byte_packets;
 411         }
 412 }
 413
 414 static void qede_get_stats64(struct net_device *dev,
 415                              struct rtnl_link_stats64 *stats)
 416 {
 417         struct qede_dev *edev = netdev_priv(dev);
 418         struct qede_stats_common *p_common;
 419
 420         qede_fill_by_demand_stats(edev);
 421         p_common = &edev->stats.common;
 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
 444 #ifdef CONFIG_QED_SRIOV
 445 static int qede_get_vf_config(struct net_device *dev, int vfidx,
 446                               struct ifla_vf_info *ivi)
 447 {
 448         struct qede_dev *edev = netdev_priv(dev);
 449
 450         if (!edev->ops)
 451                 return -EINVAL;
 452
 453         return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
 454 }
 455
 456 static int qede_set_vf_rate(struct net_device *dev, int vfidx,
 457                             int min_tx_rate, int max_tx_rate)
 458 {
 459         struct qede_dev *edev = netdev_priv(dev);
 460
 461         return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
 462                                         max_tx_rate);
 463 }
 464
 465 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
 466 {
 467         struct qede_dev *edev = netdev_priv(dev);
 468
 469         if (!edev->ops)
 470                 return -EINVAL;
 471
 472         return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
 473 }
 474
 475 static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
 476                                   int link_state)
 477 {
 478         struct qede_dev *edev = netdev_priv(dev);
 479
 480         if (!edev->ops)
 481                 return -EINVAL;
 482
 483         return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
 484 }
 485
 486 static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
 487 {
 488         struct qede_dev *edev = netdev_priv(dev);
 489
 490         if (!edev->ops)
 491                 return -EINVAL;
 492
 493         return edev->ops->iov->set_trust(edev->cdev, vfidx, setting);
 494 }
 495 #endif
 496
 497 static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 498 {
 499         struct qede_dev *edev = netdev_priv(dev);
 500
 501         if (!netif_running(dev))
 502                 return -EAGAIN;
 503
 504         switch (cmd) {
 505         case SIOCSHWTSTAMP:
 506                 return qede_ptp_hw_ts(edev, ifr);
 507         default:
 508                 DP_VERBOSE(edev, QED_MSG_DEBUG,
 509                            "default IOCTL cmd 0x%x\n", cmd);
 510                 return -EOPNOTSUPP;
 511         }
 512
 513         return 0;
 514 }
 515
 516 static void qede_tx_log_print(struct qede_dev *edev, struct qede_tx_queue *txq)
 517 {
 518         DP_NOTICE(edev,
 519                   "Txq[%d]: FW cons [host] %04x, SW cons %04x, SW prod %04x [Jiffies %lu]\n",
 520                   txq->index, le16_to_cpu(*txq->hw_cons_ptr),
 521                   qed_chain_get_cons_idx(&txq->tx_pbl),
 522                   qed_chain_get_prod_idx(&txq->tx_pbl),
 523                   jiffies);
 524 }
 525
 526 static void qede_tx_timeout(struct net_device *dev, unsigned int txqueue)
 527 {
 528         struct qede_dev *edev = netdev_priv(dev);
 529         struct qede_tx_queue *txq;
 530         int cos;
 531
 532         netif_carrier_off(dev);
 533         DP_NOTICE(edev, "TX timeout on queue %u!\n", txqueue);
 534
 535         if (!(edev->fp_array[txqueue].type & QEDE_FASTPATH_TX))
 536                 return;
 537
 538         for_each_cos_in_txq(edev, cos) {
 539                 txq = &edev->fp_array[txqueue].txq[cos];
 540
 541                 if (qed_chain_get_cons_idx(&txq->tx_pbl) !=
 542                     qed_chain_get_prod_idx(&txq->tx_pbl))
 543                         qede_tx_log_print(edev, txq);
 544         }
 545
 546         if (IS_VF(edev))
 547                 return;
 548
 549         if (test_and_set_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags) ||
 550             edev->state == QEDE_STATE_RECOVERY) {
 551                 DP_INFO(edev,
 552                         "Avoid handling a Tx timeout while another HW error is being handled\n");
 553                 return;
 554         }
 555
 556         set_bit(QEDE_ERR_GET_DBG_INFO, &edev->err_flags);
 557         set_bit(QEDE_SP_HW_ERR, &edev->sp_flags);
 558         schedule_delayed_work(&edev->sp_task, 0);
 559 }
 560
 561 static int qede_setup_tc(struct net_device *ndev, u8 num_tc)
 562 {
 563         struct qede_dev *edev = netdev_priv(ndev);
 564         int cos, count, offset;
 565
 566         if (num_tc > edev->dev_info.num_tc)
 567                 return -EINVAL;
 568
 569         netdev_reset_tc(ndev);
 570         netdev_set_num_tc(ndev, num_tc);
 571
 572         for_each_cos_in_txq(edev, cos) {
 573                 count = QEDE_TSS_COUNT(edev);
 574                 offset = cos * QEDE_TSS_COUNT(edev);
 575                 netdev_set_tc_queue(ndev, cos, count, offset);
 576         }
 577
 578         return 0;
 579 }
 580
 581 static int
 582 qede_set_flower(struct qede_dev *edev, struct flow_cls_offload *f,
 583                 __be16 proto)
 584 {
 585         switch (f->command) {
 586         case FLOW_CLS_REPLACE:
 587                 return qede_add_tc_flower_fltr(edev, proto, f);
 588         case FLOW_CLS_DESTROY:
 589                 return qede_delete_flow_filter(edev, f->cookie);
 590         default:
 591                 return -EOPNOTSUPP;
 592         }
 593 }
 594
 595 static int qede_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 596                                   void *cb_priv)
 597 {
 598         struct flow_cls_offload *f;
 599         struct qede_dev *edev = cb_priv;
 600
 601         if (!tc_cls_can_offload_and_chain0(edev->ndev, type_data))
 602                 return -EOPNOTSUPP;
 603
 604         switch (type) {
 605         case TC_SETUP_CLSFLOWER:
 606                 f = type_data;
 607                 return qede_set_flower(edev, f, f->common.protocol);
 608         default:
 609                 return -EOPNOTSUPP;
 610         }
 611 }
 612
 613 static LIST_HEAD(qede_block_cb_list);
 614
 615 static int
 616 qede_setup_tc_offload(struct net_device *dev, enum tc_setup_type type,
 617                       void *type_data)
 618 {
 619         struct qede_dev *edev = netdev_priv(dev);
 620         struct tc_mqprio_qopt *mqprio;
 621
 622         switch (type) {
 623         case TC_SETUP_BLOCK:
 624                 return flow_block_cb_setup_simple(type_data,
 625                                                   &qede_block_cb_list,
 626                                                   qede_setup_tc_block_cb,
 627                                                   edev, edev, true);
 628         case TC_SETUP_QDISC_MQPRIO:
 629                 mqprio = type_data;
 630
 631                 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 632                 return qede_setup_tc(dev, mqprio->num_tc);
 633         default:
 634                 return -EOPNOTSUPP;
 635         }
 636 }
 637
 638 static const struct net_device_ops qede_netdev_ops = {
 639         .ndo_open               = qede_open,
 640         .ndo_stop               = qede_close,
 641         .ndo_start_xmit         = qede_start_xmit,
 642         .ndo_select_queue       = qede_select_queue,
 643         .ndo_set_rx_mode        = qede_set_rx_mode,
 644         .ndo_set_mac_address    = qede_set_mac_addr,
 645         .ndo_validate_addr      = eth_validate_addr,
 646         .ndo_change_mtu         = qede_change_mtu,
 647         .ndo_do_ioctl           = qede_ioctl,
 648         .ndo_tx_timeout         = qede_tx_timeout,
 649 #ifdef CONFIG_QED_SRIOV
 650         .ndo_set_vf_mac         = qede_set_vf_mac,
 651         .ndo_set_vf_vlan        = qede_set_vf_vlan,
 652         .ndo_set_vf_trust       = qede_set_vf_trust,
 653 #endif
 654         .ndo_vlan_rx_add_vid    = qede_vlan_rx_add_vid,
 655         .ndo_vlan_rx_kill_vid   = qede_vlan_rx_kill_vid,
 656         .ndo_fix_features       = qede_fix_features,
 657         .ndo_set_features       = qede_set_features,
 658         .ndo_get_stats64        = qede_get_stats64,
 659 #ifdef CONFIG_QED_SRIOV
 660         .ndo_set_vf_link_state  = qede_set_vf_link_state,
 661         .ndo_set_vf_spoofchk    = qede_set_vf_spoofchk,
 662         .ndo_get_vf_config      = qede_get_vf_config,
 663         .ndo_set_vf_rate        = qede_set_vf_rate,
 664 #endif
 665         .ndo_features_check     = qede_features_check,
 666         .ndo_bpf                = qede_xdp,
 667 #ifdef CONFIG_RFS_ACCEL
 668         .ndo_rx_flow_steer      = qede_rx_flow_steer,
 669 #endif
 670         .ndo_xdp_xmit           = qede_xdp_transmit,
 671         .ndo_setup_tc           = qede_setup_tc_offload,
 672 };
 673
 674 static const struct net_device_ops qede_netdev_vf_ops = {
 675         .ndo_open               = qede_open,
 676         .ndo_stop               = qede_close,
 677         .ndo_start_xmit         = qede_start_xmit,
 678         .ndo_select_queue       = qede_select_queue,
 679         .ndo_set_rx_mode        = qede_set_rx_mode,
 680         .ndo_set_mac_address    = qede_set_mac_addr,
 681         .ndo_validate_addr      = eth_validate_addr,
 682         .ndo_change_mtu         = qede_change_mtu,
 683         .ndo_vlan_rx_add_vid    = qede_vlan_rx_add_vid,
 684         .ndo_vlan_rx_kill_vid   = qede_vlan_rx_kill_vid,
 685         .ndo_fix_features       = qede_fix_features,
 686         .ndo_set_features       = qede_set_features,
 687         .ndo_get_stats64        = qede_get_stats64,
 688         .ndo_features_check     = qede_features_check,
 689 };
 690
 691 static const struct net_device_ops qede_netdev_vf_xdp_ops = {
 692         .ndo_open               = qede_open,
 693         .ndo_stop               = qede_close,
 694         .ndo_start_xmit         = qede_start_xmit,
 695         .ndo_select_queue       = qede_select_queue,
 696         .ndo_set_rx_mode        = qede_set_rx_mode,
 697         .ndo_set_mac_address    = qede_set_mac_addr,
 698         .ndo_validate_addr      = eth_validate_addr,
 699         .ndo_change_mtu         = qede_change_mtu,
 700         .ndo_vlan_rx_add_vid    = qede_vlan_rx_add_vid,
 701         .ndo_vlan_rx_kill_vid   = qede_vlan_rx_kill_vid,
 702         .ndo_fix_features       = qede_fix_features,
 703         .ndo_set_features       = qede_set_features,
 704         .ndo_get_stats64        = qede_get_stats64,
 705         .ndo_features_check     = qede_features_check,
 706         .ndo_bpf                = qede_xdp,
 707         .ndo_xdp_xmit           = qede_xdp_transmit,
 708 };
 709
 710 /* -------------------------------------------------------------------------
 711  * START OF PROBE / REMOVE
 712  * -------------------------------------------------------------------------
 713  */
 714
 715 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
 716                                             struct pci_dev *pdev,
 717                                             struct qed_dev_eth_info *info,
 718                                             u32 dp_module, u8 dp_level)
 719 {
 720         struct net_device *ndev;
 721         struct qede_dev *edev;
 722
 723         ndev = alloc_etherdev_mqs(sizeof(*edev),
 724                                   info->num_queues * info->num_tc,
 725                                   info->num_queues);
 726         if (!ndev) {
 727                 pr_err("etherdev allocation failed\n");
 728                 return NULL;
 729         }
 730
 731         edev = netdev_priv(ndev);
 732         edev->ndev = ndev;
 733         edev->cdev = cdev;
 734         edev->pdev = pdev;
 735         edev->dp_module = dp_module;
 736         edev->dp_level = dp_level;
 737         edev->ops = qed_ops;
 738
 739         if (is_kdump_kernel()) {
 740                 edev->q_num_rx_buffers = NUM_RX_BDS_KDUMP_MIN;
 741                 edev->q_num_tx_buffers = NUM_TX_BDS_KDUMP_MIN;
 742         } else {
 743                 edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
 744                 edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
 745         }
 746
 747         DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n",
 748                 info->num_queues, info->num_queues);
 749
 750         SET_NETDEV_DEV(ndev, &pdev->dev);
 751
 752         memset(&edev->stats, 0, sizeof(edev->stats));
 753         memcpy(&edev->dev_info, info, sizeof(*info));
 754
 755         /* As ethtool doesn't have the ability to show WoL behavior as
 756          * 'default', if device supports it declare it's enabled.
 757          */
 758         if (edev->dev_info.common.wol_support)
 759                 edev->wol_enabled = true;
 760
 761         INIT_LIST_HEAD(&edev->vlan_list);
 762
 763         return edev;
 764 }
 765
 766 static void qede_init_ndev(struct qede_dev *edev)
 767 {
 768         struct net_device *ndev = edev->ndev;
 769         struct pci_dev *pdev = edev->pdev;
 770         bool udp_tunnel_enable = false;
 771         netdev_features_t hw_features;
 772
 773         pci_set_drvdata(pdev, ndev);
 774
 775         ndev->mem_start = edev->dev_info.common.pci_mem_start;
 776         ndev->base_addr = ndev->mem_start;
 777         ndev->mem_end = edev->dev_info.common.pci_mem_end;
 778         ndev->irq = edev->dev_info.common.pci_irq;
 779
 780         ndev->watchdog_timeo = TX_TIMEOUT;
 781
 782         if (IS_VF(edev)) {
 783                 if (edev->dev_info.xdp_supported)
 784                         ndev->netdev_ops = &qede_netdev_vf_xdp_ops;
 785                 else
 786                         ndev->netdev_ops = &qede_netdev_vf_ops;
 787         } else {
 788                 ndev->netdev_ops = &qede_netdev_ops;
 789         }
 790
 791         qede_set_ethtool_ops(ndev);
 792
 793         ndev->priv_flags |= IFF_UNICAST_FLT;
 794
 795         /* user-changeble features */
 796         hw_features = NETIF_F_GRO | NETIF_F_GRO_HW | NETIF_F_SG |
 797                       NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 798                       NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_TC;
 799
 800         if (edev->dev_info.common.b_arfs_capable)
 801                 hw_features |= NETIF_F_NTUPLE;
 802
 803         if (edev->dev_info.common.vxlan_enable ||
 804             edev->dev_info.common.geneve_enable)
 805                 udp_tunnel_enable = true;
 806
 807         if (udp_tunnel_enable || edev->dev_info.common.gre_enable) {
 808                 hw_features |= NETIF_F_TSO_ECN;
 809                 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 810                                         NETIF_F_SG | NETIF_F_TSO |
 811                                         NETIF_F_TSO_ECN | NETIF_F_TSO6 |
 812                                         NETIF_F_RXCSUM;
 813         }
 814
 815         if (udp_tunnel_enable) {
 816                 hw_features |= (NETIF_F_GSO_UDP_TUNNEL |
 817                                 NETIF_F_GSO_UDP_TUNNEL_CSUM);
 818                 ndev->hw_enc_features |= (NETIF_F_GSO_UDP_TUNNEL |
 819                                           NETIF_F_GSO_UDP_TUNNEL_CSUM);
 820
 821                 qede_set_udp_tunnels(edev);
 822         }
 823
 824         if (edev->dev_info.common.gre_enable) {
 825                 hw_features |= (NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM);
 826                 ndev->hw_enc_features |= (NETIF_F_GSO_GRE |
 827                                           NETIF_F_GSO_GRE_CSUM);
 828         }
 829
 830         ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 831                               NETIF_F_HIGHDMA;
 832         ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 833                          NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
 834                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
 835
 836         ndev->hw_features = hw_features;
 837
 838         /* MTU range: 46 - 9600 */
 839         ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 840         ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;
 841
 842         /* Set network device HW mac */
 843         ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
 844
 845         ndev->mtu = edev->dev_info.common.mtu;
 846 }
 847
 848 /* This function converts from 32b param to two params of level and module
 849  * Input 32b decoding:
 850  * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
 851  * 'happy' flow, e.g. memory allocation failed.
 852  * b30 - enable all INFO prints. INFO prints are for major steps in the flow
 853  * and provide important parameters.
 854  * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
 855  * module. VERBOSE prints are for tracking the specific flow in low level.
 856  *
 857  * Notice that the level should be that of the lowest required logs.
 858  */
 859 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
 860 {
 861         *p_dp_level = QED_LEVEL_NOTICE;
 862         *p_dp_module = 0;
 863
 864         if (debug & QED_LOG_VERBOSE_MASK) {
 865                 *p_dp_level = QED_LEVEL_VERBOSE;
 866                 *p_dp_module = (debug & 0x3FFFFFFF);
 867         } else if (debug & QED_LOG_INFO_MASK) {
 868                 *p_dp_level = QED_LEVEL_INFO;
 869         } else if (debug & QED_LOG_NOTICE_MASK) {
 870                 *p_dp_level = QED_LEVEL_NOTICE;
 871         }
 872 }
 873
 874 static void qede_free_fp_array(struct qede_dev *edev)
 875 {
 876         if (edev->fp_array) {
 877                 struct qede_fastpath *fp;
 878                 int i;
 879
 880                 for_each_queue(i) {
 881                         fp = &edev->fp_array[i];
 882
 883                         kfree(fp->sb_info);
 884                         /* Handle mem alloc failure case where qede_init_fp
 885                          * didn't register xdp_rxq_info yet.
 886                          * Implicit only (fp->type & QEDE_FASTPATH_RX)
 887                          */
 888                         if (fp->rxq && xdp_rxq_info_is_reg(&fp->rxq->xdp_rxq))
 889                                 xdp_rxq_info_unreg(&fp->rxq->xdp_rxq);
 890                         kfree(fp->rxq);
 891                         kfree(fp->xdp_tx);
 892                         kfree(fp->txq);
 893                 }
 894                 kfree(edev->fp_array);
 895         }
 896
 897         edev->num_queues = 0;
 898         edev->fp_num_tx = 0;
 899         edev->fp_num_rx = 0;
 900 }
 901
 902 static int qede_alloc_fp_array(struct qede_dev *edev)
 903 {
 904         u8 fp_combined, fp_rx = edev->fp_num_rx;
 905         struct qede_fastpath *fp;
 906         void *mem;
 907         int i;
 908
 909         edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
 910                                  sizeof(*edev->fp_array), GFP_KERNEL);
 911         if (!edev->fp_array) {
 912                 DP_NOTICE(edev, "fp array allocation failed\n");
 913                 goto err;
 914         }
 915
 916         mem = krealloc(edev->coal_entry, QEDE_QUEUE_CNT(edev) *
 917                        sizeof(*edev->coal_entry), GFP_KERNEL);
 918         if (!mem) {
 919                 DP_ERR(edev, "coalesce entry allocation failed\n");
 920                 kfree(edev->coal_entry);
 921                 goto err;
 922         }
 923         edev->coal_entry = mem;
 924
 925         fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;
 926
 927         /* Allocate the FP elements for Rx queues followed by combined and then
 928          * the Tx. This ordering should be maintained so that the respective
 929          * queues (Rx or Tx) will be together in the fastpath array and the
 930          * associated ids will be sequential.
 931          */
 932         for_each_queue(i) {
 933                 fp = &edev->fp_array[i];
 934
 935                 fp->sb_info = kzalloc(sizeof(*fp->sb_info), GFP_KERNEL);
 936                 if (!fp->sb_info) {
 937                         DP_NOTICE(edev, "sb info struct allocation failed\n");
 938                         goto err;
 939                 }
 940
 941                 if (fp_rx) {
 942                         fp->type = QEDE_FASTPATH_RX;
 943                         fp_rx--;
 944                 } else if (fp_combined) {
 945                         fp->type = QEDE_FASTPATH_COMBINED;
 946                         fp_combined--;
 947                 } else {
 948                         fp->type = QEDE_FASTPATH_TX;
 949                 }
 950
 951                 if (fp->type & QEDE_FASTPATH_TX) {
 952                         fp->txq = kcalloc(edev->dev_info.num_tc,
 953                                           sizeof(*fp->txq), GFP_KERNEL);
 954                         if (!fp->txq)
 955                                 goto err;
 956                 }
 957
 958                 if (fp->type & QEDE_FASTPATH_RX) {
 959                         fp->rxq = kzalloc(sizeof(*fp->rxq), GFP_KERNEL);
 960                         if (!fp->rxq)
 961                                 goto err;
 962
 963                         if (edev->xdp_prog) {
 964                                 fp->xdp_tx = kzalloc(sizeof(*fp->xdp_tx),
 965                                                      GFP_KERNEL);
 966                                 if (!fp->xdp_tx)
 967                                         goto err;
 968                                 fp->type |= QEDE_FASTPATH_XDP;
 969                         }
 970                 }
 971         }
 972
 973         return 0;
 974 err:
 975         qede_free_fp_array(edev);
 976         return -ENOMEM;
 977 }
 978
 979 /* The qede lock is used to protect driver state change and driver flows that
 980  * are not reentrant.
 981  */
 982 void __qede_lock(struct qede_dev *edev)
 983 {
 984         mutex_lock(&edev->qede_lock);
 985 }
 986
 987 void __qede_unlock(struct qede_dev *edev)
 988 {
 989         mutex_unlock(&edev->qede_lock);
 990 }
 991
 992 /* This version of the lock should be used when acquiring the RTNL lock is also
 993  * needed in addition to the internal qede lock.
 994  */
 995 static void qede_lock(struct qede_dev *edev)
 996 {
 997         rtnl_lock();
 998         __qede_lock(edev);
 999 }
1000
1001 static void qede_unlock(struct qede_dev *edev)
1002 {
1003         __qede_unlock(edev);
1004         rtnl_unlock();
1005 }
1006
1007 static void qede_sp_task(struct work_struct *work)
1008 {
1009         struct qede_dev *edev = container_of(work, struct qede_dev,
1010                                              sp_task.work);
1011
1012         /* Disable execution of this deferred work once
1013          * qede removal is in progress, this stop any future
1014          * scheduling of sp_task.
1015          */
1016         if (test_bit(QEDE_SP_DISABLE, &edev->sp_flags))
1017                 return;
1018
1019         /* The locking scheme depends on the specific flag:
1020          * In case of QEDE_SP_RECOVERY, acquiring the RTNL lock is required to
1021          * ensure that ongoing flows are ended and new ones are not started.
1022          * In other cases - only the internal qede lock should be acquired.
1023          */
1024
1025         if (test_and_clear_bit(QEDE_SP_RECOVERY, &edev->sp_flags)) {
1026 #ifdef CONFIG_QED_SRIOV
1027                 /* SRIOV must be disabled outside the lock to avoid a deadlock.
1028                  * The recovery of the active VFs is currently not supported.
1029                  */
1030                 if (pci_num_vf(edev->pdev))
1031                         qede_sriov_configure(edev->pdev, 0);
1032 #endif
1033                 qede_lock(edev);
1034                 qede_recovery_handler(edev);
1035                 qede_unlock(edev);
1036         }
1037
1038         __qede_lock(edev);
1039
1040         if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
1041                 if (edev->state == QEDE_STATE_OPEN)
1042                         qede_config_rx_mode(edev->ndev);
1043
1044 #ifdef CONFIG_RFS_ACCEL
1045         if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) {
1046                 if (edev->state == QEDE_STATE_OPEN)
1047                         qede_process_arfs_filters(edev, false);
1048         }
1049 #endif
1050         if (test_and_clear_bit(QEDE_SP_HW_ERR, &edev->sp_flags))
1051                 qede_generic_hw_err_handler(edev);
1052         __qede_unlock(edev);
1053
1054         if (test_and_clear_bit(QEDE_SP_AER, &edev->sp_flags)) {
1055 #ifdef CONFIG_QED_SRIOV
1056                 /* SRIOV must be disabled outside the lock to avoid a deadlock.
1057                  * The recovery of the active VFs is currently not supported.
1058                  */
1059                 if (pci_num_vf(edev->pdev))
1060                         qede_sriov_configure(edev->pdev, 0);
1061 #endif
1062                 edev->ops->common->recovery_process(edev->cdev);
1063         }
1064 }
1065
1066 static void qede_update_pf_params(struct qed_dev *cdev)
1067 {
1068         struct qed_pf_params pf_params;
1069         u16 num_cons;
1070
1071         /* 64 rx + 64 tx + 64 XDP */
1072         memset(&pf_params, 0, sizeof(struct qed_pf_params));
1073
1074         /* 1 rx + 1 xdp + max tx cos */
1075         num_cons = QED_MIN_L2_CONS;
1076
1077         pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * num_cons;
1078
1079         /* Same for VFs - make sure they'll have sufficient connections
1080          * to support XDP Tx queues.
1081          */
1082         pf_params.eth_pf_params.num_vf_cons = 48;
1083
1084         pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR;
1085         qed_ops->common->update_pf_params(cdev, &pf_params);
1086 }
1087
1088 #define QEDE_FW_VER_STR_SIZE    80
1089
1090 static void qede_log_probe(struct qede_dev *edev)
1091 {
1092         struct qed_dev_info *p_dev_info = &edev->dev_info.common;
1093         u8 buf[QEDE_FW_VER_STR_SIZE];
1094         size_t left_size;
1095
1096         snprintf(buf, QEDE_FW_VER_STR_SIZE,
1097                  "Storm FW %d.%d.%d.%d, Management FW %d.%d.%d.%d",
1098                  p_dev_info->fw_major, p_dev_info->fw_minor, p_dev_info->fw_rev,
1099                  p_dev_info->fw_eng,
1100                  (p_dev_info->mfw_rev & QED_MFW_VERSION_3_MASK) >>
1101                  QED_MFW_VERSION_3_OFFSET,
1102                  (p_dev_info->mfw_rev & QED_MFW_VERSION_2_MASK) >>
1103                  QED_MFW_VERSION_2_OFFSET,
1104                  (p_dev_info->mfw_rev & QED_MFW_VERSION_1_MASK) >>
1105                  QED_MFW_VERSION_1_OFFSET,
1106                  (p_dev_info->mfw_rev & QED_MFW_VERSION_0_MASK) >>
1107                  QED_MFW_VERSION_0_OFFSET);
1108
1109         left_size = QEDE_FW_VER_STR_SIZE - strlen(buf);
1110         if (p_dev_info->mbi_version && left_size)
1111                 snprintf(buf + strlen(buf), left_size,
1112                          " [MBI %d.%d.%d]",
1113                          (p_dev_info->mbi_version & QED_MBI_VERSION_2_MASK) >>
1114                          QED_MBI_VERSION_2_OFFSET,
1115                          (p_dev_info->mbi_version & QED_MBI_VERSION_1_MASK) >>
1116                          QED_MBI_VERSION_1_OFFSET,
1117                          (p_dev_info->mbi_version & QED_MBI_VERSION_0_MASK) >>
1118                          QED_MBI_VERSION_0_OFFSET);
1119
1120         pr_info("qede %02x:%02x.%02x: %s [%s]\n", edev->pdev->bus->number,
1121                 PCI_SLOT(edev->pdev->devfn), PCI_FUNC(edev->pdev->devfn),
1122                 buf, edev->ndev->name);
1123 }
1124
1125 enum qede_probe_mode {
1126         QEDE_PROBE_NORMAL,
1127         QEDE_PROBE_RECOVERY,
1128 };
1129
1130 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
1131                         bool is_vf, enum qede_probe_mode mode)
1132 {
1133         struct qed_probe_params probe_params;
1134         struct qed_slowpath_params sp_params;
1135         struct qed_dev_eth_info dev_info;
1136         struct qede_dev *edev;
1137         struct qed_dev *cdev;
1138         int rc;
1139
1140         if (unlikely(dp_level & QED_LEVEL_INFO))
1141                 pr_notice("Starting qede probe\n");
1142
1143         memset(&probe_params, 0, sizeof(probe_params));
1144         probe_params.protocol = QED_PROTOCOL_ETH;
1145         probe_params.dp_module = dp_module;
1146         probe_params.dp_level = dp_level;
1147         probe_params.is_vf = is_vf;
1148         probe_params.recov_in_prog = (mode == QEDE_PROBE_RECOVERY);
1149         cdev = qed_ops->common->probe(pdev, &probe_params);
1150         if (!cdev) {
1151                 rc = -ENODEV;
1152                 goto err0;
1153         }
1154
1155         qede_update_pf_params(cdev);
1156
1157         /* Start the Slowpath-process */
1158         memset(&sp_params, 0, sizeof(sp_params));
1159         sp_params.int_mode = QED_INT_MODE_MSIX;
1160         sp_params.drv_major = QEDE_MAJOR_VERSION;
1161         sp_params.drv_minor = QEDE_MINOR_VERSION;
1162         sp_params.drv_rev = QEDE_REVISION_VERSION;
1163         sp_params.drv_eng = QEDE_ENGINEERING_VERSION;
1164         strlcpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
1165         rc = qed_ops->common->slowpath_start(cdev, &sp_params);
1166         if (rc) {
1167                 pr_notice("Cannot start slowpath\n");
1168                 goto err1;
1169         }
1170
1171         /* Learn information crucial for qede to progress */
1172         rc = qed_ops->fill_dev_info(cdev, &dev_info);
1173         if (rc)
1174                 goto err2;
1175
1176         if (mode != QEDE_PROBE_RECOVERY) {
1177                 edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
1178                                            dp_level);
1179                 if (!edev) {
1180                         rc = -ENOMEM;
1181                         goto err2;
1182                 }
1183
1184                 edev->devlink = qed_ops->common->devlink_register(cdev);
1185                 if (IS_ERR(edev->devlink)) {
1186                         DP_NOTICE(edev, "Cannot register devlink\n");
1187                         edev->devlink = NULL;
1188                         /* Go on, we can live without devlink */
1189                 }
1190         } else {
1191                 struct net_device *ndev = pci_get_drvdata(pdev);
1192
1193                 edev = netdev_priv(ndev);
1194
1195                 if (edev->devlink) {
1196                         struct qed_devlink *qdl = devlink_priv(edev->devlink);
1197
1198                         qdl->cdev = cdev;
1199                 }
1200                 edev->cdev = cdev;
1201                 memset(&edev->stats, 0, sizeof(edev->stats));
1202                 memcpy(&edev->dev_info, &dev_info, sizeof(dev_info));
1203         }
1204
1205         if (is_vf)
1206                 set_bit(QEDE_FLAGS_IS_VF, &edev->flags);
1207
1208         qede_init_ndev(edev);
1209
1210         rc = qede_rdma_dev_add(edev, (mode == QEDE_PROBE_RECOVERY));
1211         if (rc)
1212                 goto err3;
1213
1214         if (mode != QEDE_PROBE_RECOVERY) {
1215                 /* Prepare the lock prior to the registration of the netdev,
1216                  * as once it's registered we might reach flows requiring it
1217                  * [it's even possible to reach a flow needing it directly
1218                  * from there, although it's unlikely].
1219                  */
1220                 INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
1221                 mutex_init(&edev->qede_lock);
1222
1223                 rc = register_netdev(edev->ndev);
1224                 if (rc) {
1225                         DP_NOTICE(edev, "Cannot register net-device\n");
1226                         goto err4;
1227                 }
1228         }
1229
1230         edev->ops->common->set_name(cdev, edev->ndev->name);
1231
1232         /* PTP not supported on VFs */
1233         if (!is_vf)
1234                 qede_ptp_enable(edev);
1235
1236         edev->ops->register_ops(cdev, &qede_ll_ops, edev);
1237
1238 #ifdef CONFIG_DCB
1239         if (!IS_VF(edev))
1240                 qede_set_dcbnl_ops(edev->ndev);
1241 #endif
1242
1243         edev->rx_copybreak = QEDE_RX_HDR_SIZE;
1244
1245         qede_log_probe(edev);
1246         return 0;
1247
1248 err4:
1249         qede_rdma_dev_remove(edev, (mode == QEDE_PROBE_RECOVERY));
1250 err3:
1251         if (mode != QEDE_PROBE_RECOVERY)
1252                 free_netdev(edev->ndev);
1253         else
1254                 edev->cdev = NULL;
1255 err2:
1256         qed_ops->common->slowpath_stop(cdev);
1257 err1:
1258         qed_ops->common->remove(cdev);
1259 err0:
1260         return rc;
1261 }
1262
1263 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1264 {
1265         bool is_vf = false;
1266         u32 dp_module = 0;
1267         u8 dp_level = 0;
1268
1269         switch ((enum qede_pci_private)id->driver_data) {
1270         case QEDE_PRIVATE_VF:
1271                 if (debug & QED_LOG_VERBOSE_MASK)
1272                         dev_err(&pdev->dev, "Probing a VF\n");
1273                 is_vf = true;
1274                 break;
1275         default:
1276                 if (debug & QED_LOG_VERBOSE_MASK)
1277                         dev_err(&pdev->dev, "Probing a PF\n");
1278         }
1279
1280         qede_config_debug(debug, &dp_module, &dp_level);
1281
1282         return __qede_probe(pdev, dp_module, dp_level, is_vf,
1283                             QEDE_PROBE_NORMAL);
1284 }
1285
1286 enum qede_remove_mode {
1287         QEDE_REMOVE_NORMAL,
1288         QEDE_REMOVE_RECOVERY,
1289 };
1290
1291 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
1292 {
1293         struct net_device *ndev = pci_get_drvdata(pdev);
1294         struct qede_dev *edev;
1295         struct qed_dev *cdev;
1296
1297         if (!ndev) {
1298                 dev_info(&pdev->dev, "Device has already been removed\n");
1299                 return;
1300         }
1301
1302         edev = netdev_priv(ndev);
1303         cdev = edev->cdev;
1304
1305         DP_INFO(edev, "Starting qede_remove\n");
1306
1307         qede_rdma_dev_remove(edev, (mode == QEDE_REMOVE_RECOVERY));
1308
1309         if (mode != QEDE_REMOVE_RECOVERY) {
1310                 set_bit(QEDE_SP_DISABLE, &edev->sp_flags);
1311                 unregister_netdev(ndev);
1312
1313                 cancel_delayed_work_sync(&edev->sp_task);
1314
1315                 edev->ops->common->set_power_state(cdev, PCI_D0);
1316
1317                 pci_set_drvdata(pdev, NULL);
1318         }
1319
1320         qede_ptp_disable(edev);
1321
1322         /* Use global ops since we've freed edev */
1323         qed_ops->common->slowpath_stop(cdev);
1324         if (system_state == SYSTEM_POWER_OFF)
1325                 return;
1326
1327         if (mode != QEDE_REMOVE_RECOVERY && edev->devlink) {
1328                 qed_ops->common->devlink_unregister(edev->devlink);
1329                 edev->devlink = NULL;
1330         }
1331         qed_ops->common->remove(cdev);
1332         edev->cdev = NULL;
1333
1334         /* Since this can happen out-of-sync with other flows,
1335          * don't release the netdevice until after slowpath stop
1336          * has been called to guarantee various other contexts
1337          * [e.g., QED register callbacks] won't break anything when
1338          * accessing the netdevice.
1339          */
1340         if (mode != QEDE_REMOVE_RECOVERY) {
1341                 kfree(edev->coal_entry);
1342                 free_netdev(ndev);
1343         }
1344
1345         dev_info(&pdev->dev, "Ending qede_remove successfully\n");
1346 }
1347
1348 static void qede_remove(struct pci_dev *pdev)
1349 {
1350         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1351 }
1352
1353 static void qede_shutdown(struct pci_dev *pdev)
1354 {
1355         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1356 }
1357
1358 /* -------------------------------------------------------------------------
1359  * START OF LOAD / UNLOAD
1360  * -------------------------------------------------------------------------
1361  */
1362
1363 static int qede_set_num_queues(struct qede_dev *edev)
1364 {
1365         int rc;
1366         u16 rss_num;
1367
1368         /* Setup queues according to possible resources*/
1369         if (edev->req_queues)
1370                 rss_num = edev->req_queues;
1371         else
1372                 rss_num = netif_get_num_default_rss_queues() *
1373                           edev->dev_info.common.num_hwfns;
1374
1375         rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
1376
1377         rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
1378         if (rc > 0) {
1379                 /* Managed to request interrupts for our queues */
1380                 edev->num_queues = rc;
1381                 DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
1382                         QEDE_QUEUE_CNT(edev), rss_num);
1383                 rc = 0;
1384         }
1385
1386         edev->fp_num_tx = edev->req_num_tx;
1387         edev->fp_num_rx = edev->req_num_rx;
1388
1389         return rc;
1390 }
1391
1392 static void qede_free_mem_sb(struct qede_dev *edev, struct qed_sb_info *sb_info,
1393                              u16 sb_id)
1394 {
1395         if (sb_info->sb_virt) {
1396                 edev->ops->common->sb_release(edev->cdev, sb_info, sb_id,
1397                                               QED_SB_TYPE_L2_QUEUE);
1398                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
1399                                   (void *)sb_info->sb_virt, sb_info->sb_phys);
1400                 memset(sb_info, 0, sizeof(*sb_info));
1401         }
1402 }
1403
1404 /* This function allocates fast-path status block memory */
1405 static int qede_alloc_mem_sb(struct qede_dev *edev,
1406                              struct qed_sb_info *sb_info, u16 sb_id)
1407 {
1408         struct status_block_e4 *sb_virt;
1409         dma_addr_t sb_phys;
1410         int rc;
1411
1412         sb_virt = dma_alloc_coherent(&edev->pdev->dev,
1413                                      sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
1414         if (!sb_virt) {
1415                 DP_ERR(edev, "Status block allocation failed\n");
1416                 return -ENOMEM;
1417         }
1418
1419         rc = edev->ops->common->sb_init(edev->cdev, sb_info,
1420                                         sb_virt, sb_phys, sb_id,
1421                                         QED_SB_TYPE_L2_QUEUE);
1422         if (rc) {
1423                 DP_ERR(edev, "Status block initialization failed\n");
1424                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
1425                                   sb_virt, sb_phys);
1426                 return rc;
1427         }
1428
1429         return 0;
1430 }
1431
1432 static void qede_free_rx_buffers(struct qede_dev *edev,
1433                                  struct qede_rx_queue *rxq)
1434 {
1435         u16 i;
1436
1437         for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
1438                 struct sw_rx_data *rx_buf;
1439                 struct page *data;
1440
1441                 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
1442                 data = rx_buf->data;
1443
1444                 dma_unmap_page(&edev->pdev->dev,
1445                                rx_buf->mapping, PAGE_SIZE, rxq->data_direction);
1446
1447                 rx_buf->data = NULL;
1448                 __free_page(data);
1449         }
1450 }
1451
1452 static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1453 {
1454         /* Free rx buffers */
1455         qede_free_rx_buffers(edev, rxq);
1456
1457         /* Free the parallel SW ring */
1458         kfree(rxq->sw_rx_ring);
1459
1460         /* Free the real RQ ring used by FW */
1461         edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
1462         edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
1463 }
1464
1465 static void qede_set_tpa_param(struct qede_rx_queue *rxq)
1466 {
1467         int i;
1468
1469         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1470                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1471
1472                 tpa_info->state = QEDE_AGG_STATE_NONE;
1473         }
1474 }
1475
1476 /* This function allocates all memory needed per Rx queue */
1477 static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1478 {
1479         struct qed_chain_init_params params = {
1480                 .cnt_type       = QED_CHAIN_CNT_TYPE_U16,
1481                 .num_elems      = RX_RING_SIZE,
1482         };
1483         struct qed_dev *cdev = edev->cdev;
1484         int i, rc, size;
1485
1486         rxq->num_rx_buffers = edev->q_num_rx_buffers;
1487
1488         rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;
1489
1490         rxq->rx_headroom = edev->xdp_prog ? XDP_PACKET_HEADROOM : NET_SKB_PAD;
1491         size = rxq->rx_headroom +
1492                SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
1493
1494         /* Make sure that the headroom and  payload fit in a single page */
1495         if (rxq->rx_buf_size + size > PAGE_SIZE)
1496                 rxq->rx_buf_size = PAGE_SIZE - size;
1497
1498         /* Segment size to split a page in multiple equal parts,
1499          * unless XDP is used in which case we'd use the entire page.
1500          */
1501         if (!edev->xdp_prog) {
1502                 size = size + rxq->rx_buf_size;
1503                 rxq->rx_buf_seg_size = roundup_pow_of_two(size);
1504         } else {
1505                 rxq->rx_buf_seg_size = PAGE_SIZE;
1506                 edev->ndev->features &= ~NETIF_F_GRO_HW;
1507         }
1508
1509         /* Allocate the parallel driver ring for Rx buffers */
1510         size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
1511         rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
1512         if (!rxq->sw_rx_ring) {
1513                 DP_ERR(edev, "Rx buffers ring allocation failed\n");
1514                 rc = -ENOMEM;
1515                 goto err;
1516         }
1517
1518         /* Allocate FW Rx ring  */
1519         params.mode = QED_CHAIN_MODE_NEXT_PTR;
1520         params.intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE;
1521         params.elem_size = sizeof(struct eth_rx_bd);
1522
1523         rc = edev->ops->common->chain_alloc(cdev, &rxq->rx_bd_ring, &params);
1524         if (rc)
1525                 goto err;
1526
1527         /* Allocate FW completion ring */
1528         params.mode = QED_CHAIN_MODE_PBL;
1529         params.intended_use = QED_CHAIN_USE_TO_CONSUME;
1530         params.elem_size = sizeof(union eth_rx_cqe);
1531
1532         rc = edev->ops->common->chain_alloc(cdev, &rxq->rx_comp_ring, &params);
1533         if (rc)
1534                 goto err;
1535
1536         /* Allocate buffers for the Rx ring */
1537         rxq->filled_buffers = 0;
1538         for (i = 0; i < rxq->num_rx_buffers; i++) {
1539                 rc = qede_alloc_rx_buffer(rxq, false);
1540                 if (rc) {
1541                         DP_ERR(edev,
1542                                "Rx buffers allocation failed at index %d\n", i);
1543                         goto err;
1544                 }
1545         }
1546
1547         edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO_HW);
1548         if (!edev->gro_disable)
1549                 qede_set_tpa_param(rxq);
1550 err:
1551         return rc;
1552 }
1553
1554 static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1555 {
1556         /* Free the parallel SW ring */
1557         if (txq->is_xdp)
1558                 kfree(txq->sw_tx_ring.xdp);
1559         else
1560                 kfree(txq->sw_tx_ring.skbs);
1561
1562         /* Free the real RQ ring used by FW */
1563         edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
1564 }
1565
1566 /* This function allocates all memory needed per Tx queue */
1567 static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1568 {
1569         struct qed_chain_init_params params = {
1570                 .mode           = QED_CHAIN_MODE_PBL,
1571                 .intended_use   = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1572                 .cnt_type       = QED_CHAIN_CNT_TYPE_U16,
1573                 .num_elems      = edev->q_num_tx_buffers,
1574                 .elem_size      = sizeof(union eth_tx_bd_types),
1575         };
1576         int size, rc;
1577
1578         txq->num_tx_buffers = edev->q_num_tx_buffers;
1579
1580         /* Allocate the parallel driver ring for Tx buffers */
1581         if (txq->is_xdp) {
1582                 size = sizeof(*txq->sw_tx_ring.xdp) * txq->num_tx_buffers;
1583                 txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL);
1584                 if (!txq->sw_tx_ring.xdp)
1585                         goto err;
1586         } else {
1587                 size = sizeof(*txq->sw_tx_ring.skbs) * txq->num_tx_buffers;
1588                 txq->sw_tx_ring.skbs = kzalloc(size, GFP_KERNEL);
1589                 if (!txq->sw_tx_ring.skbs)
1590                         goto err;
1591         }
1592
1593         rc = edev->ops->common->chain_alloc(edev->cdev, &txq->tx_pbl, &params);
1594         if (rc)
1595                 goto err;
1596
1597         return 0;
1598
1599 err:
1600         qede_free_mem_txq(edev, txq);
1601         return -ENOMEM;
1602 }
1603
1604 /* This function frees all memory of a single fp */
1605 static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1606 {
1607         qede_free_mem_sb(edev, fp->sb_info, fp->id);
1608
1609         if (fp->type & QEDE_FASTPATH_RX)
1610                 qede_free_mem_rxq(edev, fp->rxq);
1611
1612         if (fp->type & QEDE_FASTPATH_XDP)
1613                 qede_free_mem_txq(edev, fp->xdp_tx);
1614
1615         if (fp->type & QEDE_FASTPATH_TX) {
1616                 int cos;
1617
1618                 for_each_cos_in_txq(edev, cos)
1619                         qede_free_mem_txq(edev, &fp->txq[cos]);
1620         }
1621 }
1622
1623 /* This function allocates all memory needed for a single fp (i.e. an entity
1624  * which contains status block, one rx queue and/or multiple per-TC tx queues.
1625  */
1626 static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1627 {
1628         int rc = 0;
1629
1630         rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
1631         if (rc)
1632                 goto out;
1633
1634         if (fp->type & QEDE_FASTPATH_RX) {
1635                 rc = qede_alloc_mem_rxq(edev, fp->rxq);
1636                 if (rc)
1637                         goto out;
1638         }
1639
1640         if (fp->type & QEDE_FASTPATH_XDP) {
1641                 rc = qede_alloc_mem_txq(edev, fp->xdp_tx);
1642                 if (rc)
1643                         goto out;
1644         }
1645
1646         if (fp->type & QEDE_FASTPATH_TX) {
1647                 int cos;
1648
1649                 for_each_cos_in_txq(edev, cos) {
1650                         rc = qede_alloc_mem_txq(edev, &fp->txq[cos]);
1651                         if (rc)
1652                                 goto out;
1653                 }
1654         }
1655
1656 out:
1657         return rc;
1658 }
1659
1660 static void qede_free_mem_load(struct qede_dev *edev)
1661 {
1662         int i;
1663
1664         for_each_queue(i) {
1665                 struct qede_fastpath *fp = &edev->fp_array[i];
1666
1667                 qede_free_mem_fp(edev, fp);
1668         }
1669 }
1670
1671 /* This function allocates all qede memory at NIC load. */
1672 static int qede_alloc_mem_load(struct qede_dev *edev)
1673 {
1674         int rc = 0, queue_id;
1675
1676         for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
1677                 struct qede_fastpath *fp = &edev->fp_array[queue_id];
1678
1679                 rc = qede_alloc_mem_fp(edev, fp);
1680                 if (rc) {
1681                         DP_ERR(edev,
1682                                "Failed to allocate memory for fastpath - rss id = %d\n",
1683                                queue_id);
1684                         qede_free_mem_load(edev);
1685                         return rc;
1686                 }
1687         }
1688
1689         return 0;
1690 }
1691
1692 static void qede_empty_tx_queue(struct qede_dev *edev,
1693                                 struct qede_tx_queue *txq)
1694 {
1695         unsigned int pkts_compl = 0, bytes_compl = 0;
1696         struct netdev_queue *netdev_txq;
1697         int rc, len = 0;
1698
1699         netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id);
1700
1701         while (qed_chain_get_cons_idx(&txq->tx_pbl) !=
1702                qed_chain_get_prod_idx(&txq->tx_pbl)) {
1703                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
1704                            "Freeing a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n",
1705                            txq->index, qed_chain_get_cons_idx(&txq->tx_pbl),
1706                            qed_chain_get_prod_idx(&txq->tx_pbl));
1707
1708                 rc = qede_free_tx_pkt(edev, txq, &len);
1709                 if (rc) {
1710                         DP_NOTICE(edev,
1711                                   "Failed to free a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n",
1712                                   txq->index,
1713                                   qed_chain_get_cons_idx(&txq->tx_pbl),
1714                                   qed_chain_get_prod_idx(&txq->tx_pbl));
1715                         break;
1716                 }
1717
1718                 bytes_compl += len;
1719                 pkts_compl++;
1720                 txq->sw_tx_cons++;
1721         }
1722
1723         netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl);
1724 }
1725
1726 static void qede_empty_tx_queues(struct qede_dev *edev)
1727 {
1728         int i;
1729
1730         for_each_queue(i)
1731                 if (edev->fp_array[i].type & QEDE_FASTPATH_TX) {
1732                         int cos;
1733
1734                         for_each_cos_in_txq(edev, cos) {
1735                                 struct qede_fastpath *fp;
1736
1737                                 fp = &edev->fp_array[i];
1738                                 qede_empty_tx_queue(edev,
1739                                                     &fp->txq[cos]);
1740                         }
1741                 }
1742 }
1743
1744 /* This function inits fp content and resets the SB, RXQ and TXQ structures */
1745 static void qede_init_fp(struct qede_dev *edev)
1746 {
1747         int queue_id, rxq_index = 0, txq_index = 0;
1748         struct qede_fastpath *fp;
1749         bool init_xdp = false;
1750
1751         for_each_queue(queue_id) {
1752                 fp = &edev->fp_array[queue_id];
1753
1754                 fp->edev = edev;
1755                 fp->id = queue_id;
1756
1757                 if (fp->type & QEDE_FASTPATH_XDP) {
1758                         fp->xdp_tx->index = QEDE_TXQ_IDX_TO_XDP(edev,
1759                                                                 rxq_index);
1760                         fp->xdp_tx->is_xdp = 1;
1761
1762                         spin_lock_init(&fp->xdp_tx->xdp_tx_lock);
1763                         init_xdp = true;
1764                 }
1765
1766                 if (fp->type & QEDE_FASTPATH_RX) {
1767                         fp->rxq->rxq_id = rxq_index++;
1768
1769                         /* Determine how to map buffers for this queue */
1770                         if (fp->type & QEDE_FASTPATH_XDP)
1771                                 fp->rxq->data_direction = DMA_BIDIRECTIONAL;
1772                         else
1773                                 fp->rxq->data_direction = DMA_FROM_DEVICE;
1774                         fp->rxq->dev = &edev->pdev->dev;
1775
1776                         /* Driver have no error path from here */
1777                         WARN_ON(xdp_rxq_info_reg(&fp->rxq->xdp_rxq, edev->ndev,
1778                                                  fp->rxq->rxq_id, 0) < 0);
1779
1780                         if (xdp_rxq_info_reg_mem_model(&fp->rxq->xdp_rxq,
1781                                                        MEM_TYPE_PAGE_ORDER0,
1782                                                        NULL)) {
1783                                 DP_NOTICE(edev,
1784                                           "Failed to register XDP memory model\n");
1785                         }
1786                 }
1787
1788                 if (fp->type & QEDE_FASTPATH_TX) {
1789                         int cos;
1790
1791                         for_each_cos_in_txq(edev, cos) {
1792                                 struct qede_tx_queue *txq = &fp->txq[cos];
1793                                 u16 ndev_tx_id;
1794
1795                                 txq->cos = cos;
1796                                 txq->index = txq_index;
1797                                 ndev_tx_id = QEDE_TXQ_TO_NDEV_TXQ_ID(edev, txq);
1798                                 txq->ndev_txq_id = ndev_tx_id;
1799
1800                                 if (edev->dev_info.is_legacy)
1801                                         txq->is_legacy = true;
1802                                 txq->dev = &edev->pdev->dev;
1803                         }
1804
1805                         txq_index++;
1806                 }
1807
1808                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1809                          edev->ndev->name, queue_id);
1810         }
1811
1812         if (init_xdp) {
1813                 edev->total_xdp_queues = QEDE_RSS_COUNT(edev);
1814                 DP_INFO(edev, "Total XDP queues: %u\n", edev->total_xdp_queues);
1815         }
1816 }
1817
1818 static int qede_set_real_num_queues(struct qede_dev *edev)
1819 {
1820         int rc = 0;
1821
1822         rc = netif_set_real_num_tx_queues(edev->ndev,
1823                                           QEDE_TSS_COUNT(edev) *
1824                                           edev->dev_info.num_tc);
1825         if (rc) {
1826                 DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
1827                 return rc;
1828         }
1829
1830         rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
1831         if (rc) {
1832                 DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
1833                 return rc;
1834         }
1835
1836         return 0;
1837 }
1838
1839 static void qede_napi_disable_remove(struct qede_dev *edev)
1840 {
1841         int i;
1842
1843         for_each_queue(i) {
1844                 napi_disable(&edev->fp_array[i].napi);
1845
1846                 netif_napi_del(&edev->fp_array[i].napi);
1847         }
1848 }
1849
1850 static void qede_napi_add_enable(struct qede_dev *edev)
1851 {
1852         int i;
1853
1854         /* Add NAPI objects */
1855         for_each_queue(i) {
1856                 netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
1857                                qede_poll, NAPI_POLL_WEIGHT);
1858                 napi_enable(&edev->fp_array[i].napi);
1859         }
1860 }
1861
1862 static void qede_sync_free_irqs(struct qede_dev *edev)
1863 {
1864         int i;
1865
1866         for (i = 0; i < edev->int_info.used_cnt; i++) {
1867                 if (edev->int_info.msix_cnt) {
1868                         synchronize_irq(edev->int_info.msix[i].vector);
1869                         free_irq(edev->int_info.msix[i].vector,
1870                                  &edev->fp_array[i]);
1871                 } else {
1872                         edev->ops->common->simd_handler_clean(edev->cdev, i);
1873                 }
1874         }
1875
1876         edev->int_info.used_cnt = 0;
1877 }
1878
1879 static int qede_req_msix_irqs(struct qede_dev *edev)
1880 {
1881         int i, rc;
1882
1883         /* Sanitize number of interrupts == number of prepared RSS queues */
1884         if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
1885                 DP_ERR(edev,
1886                        "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
1887                        QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
1888                 return -EINVAL;
1889         }
1890
1891         for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
1892 #ifdef CONFIG_RFS_ACCEL
1893                 struct qede_fastpath *fp = &edev->fp_array[i];
1894
1895                 if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) {
1896                         rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap,
1897                                               edev->int_info.msix[i].vector);
1898                         if (rc) {
1899                                 DP_ERR(edev, "Failed to add CPU rmap\n");
1900                                 qede_free_arfs(edev);
1901                         }
1902                 }
1903 #endif
1904                 rc = request_irq(edev->int_info.msix[i].vector,
1905                                  qede_msix_fp_int, 0, edev->fp_array[i].name,
1906                                  &edev->fp_array[i]);
1907                 if (rc) {
1908                         DP_ERR(edev, "Request fp %d irq failed\n", i);
1909                         qede_sync_free_irqs(edev);
1910                         return rc;
1911                 }
1912                 DP_VERBOSE(edev, NETIF_MSG_INTR,
1913                            "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
1914                            edev->fp_array[i].name, i,
1915                            &edev->fp_array[i]);
1916                 edev->int_info.used_cnt++;
1917         }
1918
1919         return 0;
1920 }
1921
1922 static void qede_simd_fp_handler(void *cookie)
1923 {
1924         struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
1925
1926         napi_schedule_irqoff(&fp->napi);
1927 }
1928
1929 static int qede_setup_irqs(struct qede_dev *edev)
1930 {
1931         int i, rc = 0;
1932
1933         /* Learn Interrupt configuration */
1934         rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
1935         if (rc)
1936                 return rc;
1937
1938         if (edev->int_info.msix_cnt) {
1939                 rc = qede_req_msix_irqs(edev);
1940                 if (rc)
1941                         return rc;
1942                 edev->ndev->irq = edev->int_info.msix[0].vector;
1943         } else {
1944                 const struct qed_common_ops *ops;
1945
1946                 /* qed should learn receive the RSS ids and callbacks */
1947                 ops = edev->ops->common;
1948                 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
1949                         ops->simd_handler_config(edev->cdev,
1950                                                  &edev->fp_array[i], i,
1951                                                  qede_simd_fp_handler);
1952                 edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
1953         }
1954         return 0;
1955 }
1956
1957 static int qede_drain_txq(struct qede_dev *edev,
1958                           struct qede_tx_queue *txq, bool allow_drain)
1959 {
1960         int rc, cnt = 1000;
1961
1962         while (txq->sw_tx_cons != txq->sw_tx_prod) {
1963                 if (!cnt) {
1964                         if (allow_drain) {
1965                                 DP_NOTICE(edev,
1966                                           "Tx queue[%d] is stuck, requesting MCP to drain\n",
1967                                           txq->index);
1968                                 rc = edev->ops->common->drain(edev->cdev);
1969                                 if (rc)
1970                                         return rc;
1971                                 return qede_drain_txq(edev, txq, false);
1972                         }
1973                         DP_NOTICE(edev,
1974                                   "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
1975                                   txq->index, txq->sw_tx_prod,
1976                                   txq->sw_tx_cons);
1977                         return -ENODEV;
1978                 }
1979                 cnt--;
1980                 usleep_range(1000, 2000);
1981                 barrier();
1982         }
1983
1984         /* FW finished processing, wait for HW to transmit all tx packets */
1985         usleep_range(1000, 2000);
1986
1987         return 0;
1988 }
1989
1990 static int qede_stop_txq(struct qede_dev *edev,
1991                          struct qede_tx_queue *txq, int rss_id)
1992 {
1993         /* delete doorbell from doorbell recovery mechanism */
1994         edev->ops->common->db_recovery_del(edev->cdev, txq->doorbell_addr,
1995                                            &txq->tx_db);
1996
1997         return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle);
1998 }
1999
2000 static int qede_stop_queues(struct qede_dev *edev)
2001 {
2002         struct qed_update_vport_params *vport_update_params;
2003         struct qed_dev *cdev = edev->cdev;
2004         struct qede_fastpath *fp;
2005         int rc, i;
2006
2007         /* Disable the vport */
2008         vport_update_params = vzalloc(sizeof(*vport_update_params));
2009         if (!vport_update_params)
2010                 return -ENOMEM;
2011
2012         vport_update_params->vport_id = 0;
2013         vport_update_params->update_vport_active_flg = 1;
2014         vport_update_params->vport_active_flg = 0;
2015         vport_update_params->update_rss_flg = 0;
2016
2017         rc = edev->ops->vport_update(cdev, vport_update_params);
2018         vfree(vport_update_params);
2019
2020         if (rc) {
2021                 DP_ERR(edev, "Failed to update vport\n");
2022                 return rc;
2023         }
2024
2025         /* Flush Tx queues. If needed, request drain from MCP */
2026         for_each_queue(i) {
2027                 fp = &edev->fp_array[i];
2028
2029                 if (fp->type & QEDE_FASTPATH_TX) {
2030                         int cos;
2031
2032                         for_each_cos_in_txq(edev, cos) {
2033                                 rc = qede_drain_txq(edev, &fp->txq[cos], true);
2034                                 if (rc)
2035                                         return rc;
2036                         }
2037                 }
2038
2039                 if (fp->type & QEDE_FASTPATH_XDP) {
2040                         rc = qede_drain_txq(edev, fp->xdp_tx, true);
2041                         if (rc)
2042                                 return rc;
2043                 }
2044         }
2045
2046         /* Stop all Queues in reverse order */
2047         for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
2048                 fp = &edev->fp_array[i];
2049
2050                 /* Stop the Tx Queue(s) */
2051                 if (fp->type & QEDE_FASTPATH_TX) {
2052                         int cos;
2053
2054                         for_each_cos_in_txq(edev, cos) {
2055                                 rc = qede_stop_txq(edev, &fp->txq[cos], i);
2056                                 if (rc)
2057                                         return rc;
2058                         }
2059                 }
2060
2061                 /* Stop the Rx Queue */
2062                 if (fp->type & QEDE_FASTPATH_RX) {
2063                         rc = edev->ops->q_rx_stop(cdev, i, fp->rxq->handle);
2064                         if (rc) {
2065                                 DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
2066                                 return rc;
2067                         }
2068                 }
2069
2070                 /* Stop the XDP forwarding queue */
2071                 if (fp->type & QEDE_FASTPATH_XDP) {
2072                         rc = qede_stop_txq(edev, fp->xdp_tx, i);
2073                         if (rc)
2074                                 return rc;
2075
2076                         bpf_prog_put(fp->rxq->xdp_prog);
2077                 }
2078         }
2079
2080         /* Stop the vport */
2081         rc = edev->ops->vport_stop(cdev, 0);
2082         if (rc)
2083                 DP_ERR(edev, "Failed to stop VPORT\n");
2084
2085         return rc;
2086 }
2087
2088 static int qede_start_txq(struct qede_dev *edev,
2089                           struct qede_fastpath *fp,
2090                           struct qede_tx_queue *txq, u8 rss_id, u16 sb_idx)
2091 {
2092         dma_addr_t phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
2093         u32 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
2094         struct qed_queue_start_common_params params;
2095         struct qed_txq_start_ret_params ret_params;
2096         int rc;
2097
2098         memset(&params, 0, sizeof(params));
2099         memset(&ret_params, 0, sizeof(ret_params));
2100
2101         /* Let the XDP queue share the queue-zone with one of the regular txq.
2102          * We don't really care about its coalescing.
2103          */
2104         if (txq->is_xdp)
2105                 params.queue_id = QEDE_TXQ_XDP_TO_IDX(edev, txq);
2106         else
2107                 params.queue_id = txq->index;
2108
2109         params.p_sb = fp->sb_info;
2110         params.sb_idx = sb_idx;
2111         params.tc = txq->cos;
2112
2113         rc = edev->ops->q_tx_start(edev->cdev, rss_id, &params, phys_table,
2114                                    page_cnt, &ret_params);
2115         if (rc) {
2116                 DP_ERR(edev, "Start TXQ #%d failed %d\n", txq->index, rc);
2117                 return rc;
2118         }
2119
2120         txq->doorbell_addr = ret_params.p_doorbell;
2121         txq->handle = ret_params.p_handle;
2122
2123         /* Determine the FW consumer address associated */
2124         txq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[sb_idx];
2125
2126         /* Prepare the doorbell parameters */
2127         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_DEST, DB_DEST_XCM);
2128         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
2129         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_VAL_SEL,
2130                   DQ_XCM_ETH_TX_BD_PROD_CMD);
2131         txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
2132
2133         /* register doorbell with doorbell recovery mechanism */
2134         rc = edev->ops->common->db_recovery_add(edev->cdev, txq->doorbell_addr,
2135                                                 &txq->tx_db, DB_REC_WIDTH_32B,
2136                                                 DB_REC_KERNEL);
2137
2138         return rc;
2139 }
2140
2141 static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
2142 {
2143         int vlan_removal_en = 1;
2144         struct qed_dev *cdev = edev->cdev;
2145         struct qed_dev_info *qed_info = &edev->dev_info.common;
2146         struct qed_update_vport_params *vport_update_params;
2147         struct qed_queue_start_common_params q_params;
2148         struct qed_start_vport_params start = {0};
2149         int rc, i;
2150
2151         if (!edev->num_queues) {
2152                 DP_ERR(edev,
2153                        "Cannot update V-VPORT as active as there are no Rx queues\n");
2154                 return -EINVAL;
2155         }
2156
2157         vport_update_params = vzalloc(sizeof(*vport_update_params));
2158         if (!vport_update_params)
2159                 return -ENOMEM;
2160
2161         start.handle_ptp_pkts = !!(edev->ptp);
2162         start.gro_enable = !edev->gro_disable;
2163         start.mtu = edev->ndev->mtu;
2164         start.vport_id = 0;
2165         start.drop_ttl0 = true;
2166         start.remove_inner_vlan = vlan_removal_en;
2167         start.clear_stats = clear_stats;
2168
2169         rc = edev->ops->vport_start(cdev, &start);
2170
2171         if (rc) {
2172                 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
2173                 goto out;
2174         }
2175
2176         DP_VERBOSE(edev, NETIF_MSG_IFUP,
2177                    "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
2178                    start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
2179
2180         for_each_queue(i) {
2181                 struct qede_fastpath *fp = &edev->fp_array[i];
2182                 dma_addr_t p_phys_table;
2183                 u32 page_cnt;
2184
2185                 if (fp->type & QEDE_FASTPATH_RX) {
2186                         struct qed_rxq_start_ret_params ret_params;
2187                         struct qede_rx_queue *rxq = fp->rxq;
2188                         __le16 *val;
2189
2190                         memset(&ret_params, 0, sizeof(ret_params));
2191                         memset(&q_params, 0, sizeof(q_params));
2192                         q_params.queue_id = rxq->rxq_id;
2193                         q_params.vport_id = 0;
2194                         q_params.p_sb = fp->sb_info;
2195                         q_params.sb_idx = RX_PI;
2196
2197                         p_phys_table =
2198                             qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
2199                         page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);
2200
2201                         rc = edev->ops->q_rx_start(cdev, i, &q_params,
2202                                                    rxq->rx_buf_size,
2203                                                    rxq->rx_bd_ring.p_phys_addr,
2204                                                    p_phys_table,
2205                                                    page_cnt, &ret_params);
2206                         if (rc) {
2207                                 DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
2208                                        rc);
2209                                 goto out;
2210                         }
2211
2212                         /* Use the return parameters */
2213                         rxq->hw_rxq_prod_addr = ret_params.p_prod;
2214                         rxq->handle = ret_params.p_handle;
2215
2216                         val = &fp->sb_info->sb_virt->pi_array[RX_PI];
2217                         rxq->hw_cons_ptr = val;
2218
2219                         qede_update_rx_prod(edev, rxq);
2220                 }
2221
2222                 if (fp->type & QEDE_FASTPATH_XDP) {
2223                         rc = qede_start_txq(edev, fp, fp->xdp_tx, i, XDP_PI);
2224                         if (rc)
2225                                 goto out;
2226
2227                         bpf_prog_add(edev->xdp_prog, 1);
2228                         fp->rxq->xdp_prog = edev->xdp_prog;
2229                 }
2230
2231                 if (fp->type & QEDE_FASTPATH_TX) {
2232                         int cos;
2233
2234                         for_each_cos_in_txq(edev, cos) {
2235                                 rc = qede_start_txq(edev, fp, &fp->txq[cos], i,
2236                                                     TX_PI(cos));
2237                                 if (rc)
2238                                         goto out;
2239                         }
2240                 }
2241         }
2242
2243         /* Prepare and send the vport enable */
2244         vport_update_params->vport_id = start.vport_id;
2245         vport_update_params->update_vport_active_flg = 1;
2246         vport_update_params->vport_active_flg = 1;
2247
2248         if ((qed_info->b_inter_pf_switch || pci_num_vf(edev->pdev)) &&
2249             qed_info->tx_switching) {
2250                 vport_update_params->update_tx_switching_flg = 1;
2251                 vport_update_params->tx_switching_flg = 1;
2252         }
2253
2254         qede_fill_rss_params(edev, &vport_update_params->rss_params,
2255                              &vport_update_params->update_rss_flg);
2256
2257         rc = edev->ops->vport_update(cdev, vport_update_params);
2258         if (rc)
2259                 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
2260
2261 out:
2262         vfree(vport_update_params);
2263         return rc;
2264 }
2265
2266 enum qede_unload_mode {
2267         QEDE_UNLOAD_NORMAL,
2268         QEDE_UNLOAD_RECOVERY,
2269 };
2270
2271 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
2272                         bool is_locked)
2273 {
2274         struct qed_link_params link_params;
2275         int rc;
2276
2277         DP_INFO(edev, "Starting qede unload\n");
2278
2279         if (!is_locked)
2280                 __qede_lock(edev);
2281
2282         clear_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
2283
2284         if (mode != QEDE_UNLOAD_RECOVERY)
2285                 edev->state = QEDE_STATE_CLOSED;
2286
2287         qede_rdma_dev_event_close(edev);
2288
2289         /* Close OS Tx */
2290         netif_tx_disable(edev->ndev);
2291         netif_carrier_off(edev->ndev);
2292
2293         if (mode != QEDE_UNLOAD_RECOVERY) {
2294                 /* Reset the link */
2295                 memset(&link_params, 0, sizeof(link_params));
2296                 link_params.link_up = false;
2297                 edev->ops->common->set_link(edev->cdev, &link_params);
2298
2299                 rc = qede_stop_queues(edev);
2300                 if (rc) {
2301                         qede_sync_free_irqs(edev);
2302                         goto out;
2303                 }
2304
2305                 DP_INFO(edev, "Stopped Queues\n");
2306         }
2307
2308         qede_vlan_mark_nonconfigured(edev);
2309         edev->ops->fastpath_stop(edev->cdev);
2310
2311         if (edev->dev_info.common.b_arfs_capable) {
2312                 qede_poll_for_freeing_arfs_filters(edev);
2313                 qede_free_arfs(edev);
2314         }
2315
2316         /* Release the interrupts */
2317         qede_sync_free_irqs(edev);
2318         edev->ops->common->set_fp_int(edev->cdev, 0);
2319
2320         qede_napi_disable_remove(edev);
2321
2322         if (mode == QEDE_UNLOAD_RECOVERY)
2323                 qede_empty_tx_queues(edev);
2324
2325         qede_free_mem_load(edev);
2326         qede_free_fp_array(edev);
2327
2328 out:
2329         if (!is_locked)
2330                 __qede_unlock(edev);
2331
2332         if (mode != QEDE_UNLOAD_RECOVERY)
2333                 DP_NOTICE(edev, "Link is down\n");
2334
2335         edev->ptp_skip_txts = 0;
2336
2337         DP_INFO(edev, "Ending qede unload\n");
2338 }
2339
2340 enum qede_load_mode {
2341         QEDE_LOAD_NORMAL,
2342         QEDE_LOAD_RELOAD,
2343         QEDE_LOAD_RECOVERY,
2344 };
2345
2346 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
2347                      bool is_locked)
2348 {
2349         struct qed_link_params link_params;
2350         struct ethtool_coalesce coal = {};
2351         u8 num_tc;
2352         int rc, i;
2353
2354         DP_INFO(edev, "Starting qede load\n");
2355
2356         if (!is_locked)
2357                 __qede_lock(edev);
2358
2359         rc = qede_set_num_queues(edev);
2360         if (rc)
2361                 goto out;
2362
2363         rc = qede_alloc_fp_array(edev);
2364         if (rc)
2365                 goto out;
2366
2367         qede_init_fp(edev);
2368
2369         rc = qede_alloc_mem_load(edev);
2370         if (rc)
2371                 goto err1;
2372         DP_INFO(edev, "Allocated %d Rx, %d Tx queues\n",
2373                 QEDE_RSS_COUNT(edev), QEDE_TSS_COUNT(edev));
2374
2375         rc = qede_set_real_num_queues(edev);
2376         if (rc)
2377                 goto err2;
2378
2379         if (qede_alloc_arfs(edev)) {
2380                 edev->ndev->features &= ~NETIF_F_NTUPLE;
2381                 edev->dev_info.common.b_arfs_capable = false;
2382         }
2383
2384         qede_napi_add_enable(edev);
2385         DP_INFO(edev, "Napi added and enabled\n");
2386
2387         rc = qede_setup_irqs(edev);
2388         if (rc)
2389                 goto err3;
2390         DP_INFO(edev, "Setup IRQs succeeded\n");
2391
2392         rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
2393         if (rc)
2394                 goto err4;
2395         DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
2396
2397         num_tc = netdev_get_num_tc(edev->ndev);
2398         num_tc = num_tc ? num_tc : edev->dev_info.num_tc;
2399         qede_setup_tc(edev->ndev, num_tc);
2400
2401         /* Program un-configured VLANs */
2402         qede_configure_vlan_filters(edev);
2403
2404         set_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
2405
2406         /* Ask for link-up using current configuration */
2407         memset(&link_params, 0, sizeof(link_params));
2408         link_params.link_up = true;
2409         edev->ops->common->set_link(edev->cdev, &link_params);
2410
2411         edev->state = QEDE_STATE_OPEN;
2412
2413         coal.rx_coalesce_usecs = QED_DEFAULT_RX_USECS;
2414         coal.tx_coalesce_usecs = QED_DEFAULT_TX_USECS;
2415
2416         for_each_queue(i) {
2417                 if (edev->coal_entry[i].isvalid) {
2418                         coal.rx_coalesce_usecs = edev->coal_entry[i].rxc;
2419                         coal.tx_coalesce_usecs = edev->coal_entry[i].txc;
2420                 }
2421                 __qede_unlock(edev);
2422                 qede_set_per_coalesce(edev->ndev, i, &coal);
2423                 __qede_lock(edev);
2424         }
2425         DP_INFO(edev, "Ending successfully qede load\n");
2426
2427         goto out;
2428 err4:
2429         qede_sync_free_irqs(edev);
2430         memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
2431 err3:
2432         qede_napi_disable_remove(edev);
2433 err2:
2434         qede_free_mem_load(edev);
2435 err1:
2436         edev->ops->common->set_fp_int(edev->cdev, 0);
2437         qede_free_fp_array(edev);
2438         edev->num_queues = 0;
2439         edev->fp_num_tx = 0;
2440         edev->fp_num_rx = 0;
2441 out:
2442         if (!is_locked)
2443                 __qede_unlock(edev);
2444
2445         return rc;
2446 }
2447
2448 /* 'func' should be able to run between unload and reload assuming interface
2449  * is actually running, or afterwards in case it's currently DOWN.
2450  */
2451 void qede_reload(struct qede_dev *edev,
2452                  struct qede_reload_args *args, bool is_locked)
2453 {
2454         if (!is_locked)
2455                 __qede_lock(edev);
2456
2457         /* Since qede_lock is held, internal state wouldn't change even
2458          * if netdev state would start transitioning. Check whether current
2459          * internal configuration indicates device is up, then reload.
2460          */
2461         if (edev->state == QEDE_STATE_OPEN) {
2462                 qede_unload(edev, QEDE_UNLOAD_NORMAL, true);
2463                 if (args)
2464                         args->func(edev, args);
2465                 qede_load(edev, QEDE_LOAD_RELOAD, true);
2466
2467                 /* Since no one is going to do it for us, re-configure */
2468                 qede_config_rx_mode(edev->ndev);
2469         } else if (args) {
2470                 args->func(edev, args);
2471         }
2472
2473         if (!is_locked)
2474                 __qede_unlock(edev);
2475 }
2476
2477 /* called with rtnl_lock */
2478 static int qede_open(struct net_device *ndev)
2479 {
2480         struct qede_dev *edev = netdev_priv(ndev);
2481         int rc;
2482
2483         netif_carrier_off(ndev);
2484
2485         edev->ops->common->set_power_state(edev->cdev, PCI_D0);
2486
2487         rc = qede_load(edev, QEDE_LOAD_NORMAL, false);
2488         if (rc)
2489                 return rc;
2490
2491         udp_tunnel_nic_reset_ntf(ndev);
2492
2493         edev->ops->common->update_drv_state(edev->cdev, true);
2494
2495         return 0;
2496 }
2497
2498 static int qede_close(struct net_device *ndev)
2499 {
2500         struct qede_dev *edev = netdev_priv(ndev);
2501
2502         qede_unload(edev, QEDE_UNLOAD_NORMAL, false);
2503
2504         if (edev->cdev)
2505                 edev->ops->common->update_drv_state(edev->cdev, false);
2506
2507         return 0;
2508 }
2509
2510 static void qede_link_update(void *dev, struct qed_link_output *link)
2511 {
2512         struct qede_dev *edev = dev;
2513
2514         if (!test_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags)) {
2515                 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not ready\n");
2516                 return;
2517         }
2518
2519         if (link->link_up) {
2520                 if (!netif_carrier_ok(edev->ndev)) {
2521                         DP_NOTICE(edev, "Link is up\n");
2522                         netif_tx_start_all_queues(edev->ndev);
2523                         netif_carrier_on(edev->ndev);
2524                         qede_rdma_dev_event_open(edev);
2525                 }
2526         } else {
2527                 if (netif_carrier_ok(edev->ndev)) {
2528                         DP_NOTICE(edev, "Link is down\n");
2529                         netif_tx_disable(edev->ndev);
2530                         netif_carrier_off(edev->ndev);
2531                         qede_rdma_dev_event_close(edev);
2532                 }
2533         }
2534 }
2535
2536 static void qede_schedule_recovery_handler(void *dev)
2537 {
2538         struct qede_dev *edev = dev;
2539
2540         if (edev->state == QEDE_STATE_RECOVERY) {
2541                 DP_NOTICE(edev,
2542                           "Avoid scheduling a recovery handling since already in recovery state\n");
2543                 return;
2544         }
2545
2546         set_bit(QEDE_SP_RECOVERY, &edev->sp_flags);
2547         schedule_delayed_work(&edev->sp_task, 0);
2548
2549         DP_INFO(edev, "Scheduled a recovery handler\n");
2550 }
2551
2552 static void qede_recovery_failed(struct qede_dev *edev)
2553 {
2554         netdev_err(edev->ndev, "Recovery handling has failed. Power cycle is needed.\n");
2555
2556         netif_device_detach(edev->ndev);
2557
2558         if (edev->cdev)
2559                 edev->ops->common->set_power_state(edev->cdev, PCI_D3hot);
2560 }
2561
2562 static void qede_recovery_handler(struct qede_dev *edev)
2563 {
2564         u32 curr_state = edev->state;
2565         int rc;
2566
2567         DP_NOTICE(edev, "Starting a recovery process\n");
2568
2569         /* No need to acquire first the qede_lock since is done by qede_sp_task
2570          * before calling this function.
2571          */
2572         edev->state = QEDE_STATE_RECOVERY;
2573
2574         edev->ops->common->recovery_prolog(edev->cdev);
2575
2576         if (curr_state == QEDE_STATE_OPEN)
2577                 qede_unload(edev, QEDE_UNLOAD_RECOVERY, true);
2578
2579         __qede_remove(edev->pdev, QEDE_REMOVE_RECOVERY);
2580
2581         rc = __qede_probe(edev->pdev, edev->dp_module, edev->dp_level,
2582                           IS_VF(edev), QEDE_PROBE_RECOVERY);
2583         if (rc) {
2584                 edev->cdev = NULL;
2585                 goto err;
2586         }
2587
2588         if (curr_state == QEDE_STATE_OPEN) {
2589                 rc = qede_load(edev, QEDE_LOAD_RECOVERY, true);
2590                 if (rc)
2591                         goto err;
2592
2593                 qede_config_rx_mode(edev->ndev);
2594                 udp_tunnel_nic_reset_ntf(edev->ndev);
2595         }
2596
2597         edev->state = curr_state;
2598
2599         DP_NOTICE(edev, "Recovery handling is done\n");
2600
2601         return;
2602
2603 err:
2604         qede_recovery_failed(edev);
2605 }
2606
2607 static void qede_atomic_hw_err_handler(struct qede_dev *edev)
2608 {
2609         struct qed_dev *cdev = edev->cdev;
2610
2611         DP_NOTICE(edev,
2612                   "Generic non-sleepable HW error handling started - err_flags 0x%lx\n",
2613                   edev->err_flags);
2614
2615         /* Get a call trace of the flow that led to the error */
2616         WARN_ON(test_bit(QEDE_ERR_WARN, &edev->err_flags));
2617
2618         /* Prevent HW attentions from being reasserted */
2619         if (test_bit(QEDE_ERR_ATTN_CLR_EN, &edev->err_flags))
2620                 edev->ops->common->attn_clr_enable(cdev, true);
2621
2622         DP_NOTICE(edev, "Generic non-sleepable HW error handling is done\n");
2623 }
2624
2625 static void qede_generic_hw_err_handler(struct qede_dev *edev)
2626 {
2627         DP_NOTICE(edev,
2628                   "Generic sleepable HW error handling started - err_flags 0x%lx\n",
2629                   edev->err_flags);
2630
2631         if (edev->devlink)
2632                 edev->ops->common->report_fatal_error(edev->devlink, edev->last_err_type);
2633
2634         clear_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags);
2635
2636         DP_NOTICE(edev, "Generic sleepable HW error handling is done\n");
2637 }
2638
2639 static void qede_set_hw_err_flags(struct qede_dev *edev,
2640                                   enum qed_hw_err_type err_type)
2641 {
2642         unsigned long err_flags = 0;
2643
2644         switch (err_type) {
2645         case QED_HW_ERR_DMAE_FAIL:
2646                 set_bit(QEDE_ERR_WARN, &err_flags);
2647                 fallthrough;
2648         case QED_HW_ERR_MFW_RESP_FAIL:
2649         case QED_HW_ERR_HW_ATTN:
2650         case QED_HW_ERR_RAMROD_FAIL:
2651         case QED_HW_ERR_FW_ASSERT:
2652                 set_bit(QEDE_ERR_ATTN_CLR_EN, &err_flags);
2653                 set_bit(QEDE_ERR_GET_DBG_INFO, &err_flags);
2654                 break;
2655
2656         default:
2657                 DP_NOTICE(edev, "Unexpected HW error [%d]\n", err_type);
2658                 break;
2659         }
2660
2661         edev->err_flags |= err_flags;
2662 }
2663
2664 static void qede_schedule_hw_err_handler(void *dev,
2665                                          enum qed_hw_err_type err_type)
2666 {
2667         struct qede_dev *edev = dev;
2668
2669         /* Fan failure cannot be masked by handling of another HW error or by a
2670          * concurrent recovery process.
2671          */
2672         if ((test_and_set_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags) ||
2673              edev->state == QEDE_STATE_RECOVERY) &&
2674              err_type != QED_HW_ERR_FAN_FAIL) {
2675                 DP_INFO(edev,
2676                         "Avoid scheduling an error handling while another HW error is being handled\n");
2677                 return;
2678         }
2679
2680         if (err_type >= QED_HW_ERR_LAST) {
2681                 DP_NOTICE(edev, "Unknown HW error [%d]\n", err_type);
2682                 clear_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags);
2683                 return;
2684         }
2685
2686         edev->last_err_type = err_type;
2687         qede_set_hw_err_flags(edev, err_type);
2688         qede_atomic_hw_err_handler(edev);
2689         set_bit(QEDE_SP_HW_ERR, &edev->sp_flags);
2690         schedule_delayed_work(&edev->sp_task, 0);
2691
2692         DP_INFO(edev, "Scheduled a error handler [err_type %d]\n", err_type);
2693 }
2694
2695 static bool qede_is_txq_full(struct qede_dev *edev, struct qede_tx_queue *txq)
2696 {
2697         struct netdev_queue *netdev_txq;
2698
2699         netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id);
2700         if (netif_xmit_stopped(netdev_txq))
2701                 return true;
2702
2703         return false;
2704 }
2705
2706 static void qede_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
2707 {
2708         struct qede_dev *edev = dev;
2709         struct netdev_hw_addr *ha;
2710         int i;
2711
2712         if (edev->ndev->features & NETIF_F_IP_CSUM)
2713                 data->feat_flags |= QED_TLV_IP_CSUM;
2714         if (edev->ndev->features & NETIF_F_TSO)
2715                 data->feat_flags |= QED_TLV_LSO;
2716
2717         ether_addr_copy(data->mac[0], edev->ndev->dev_addr);
2718         eth_zero_addr(data->mac[1]);
2719         eth_zero_addr(data->mac[2]);
2720         /* Copy the first two UC macs */
2721         netif_addr_lock_bh(edev->ndev);
2722         i = 1;
2723         netdev_for_each_uc_addr(ha, edev->ndev) {
2724                 ether_addr_copy(data->mac[i++], ha->addr);
2725                 if (i == QED_TLV_MAC_COUNT)
2726                         break;
2727         }
2728
2729         netif_addr_unlock_bh(edev->ndev);
2730 }
2731
2732 static void qede_get_eth_tlv_data(void *dev, void *data)
2733 {
2734         struct qed_mfw_tlv_eth *etlv = data;
2735         struct qede_dev *edev = dev;
2736         struct qede_fastpath *fp;
2737         int i;
2738
2739         etlv->lso_maxoff_size = 0XFFFF;
2740         etlv->lso_maxoff_size_set = true;
2741         etlv->lso_minseg_size = (u16)ETH_TX_LSO_WINDOW_MIN_LEN;
2742         etlv->lso_minseg_size_set = true;
2743         etlv->prom_mode = !!(edev->ndev->flags & IFF_PROMISC);
2744         etlv->prom_mode_set = true;
2745         etlv->tx_descr_size = QEDE_TSS_COUNT(edev);
2746         etlv->tx_descr_size_set = true;
2747         etlv->rx_descr_size = QEDE_RSS_COUNT(edev);
2748         etlv->rx_descr_size_set = true;
2749         etlv->iov_offload = QED_MFW_TLV_IOV_OFFLOAD_VEB;
2750         etlv->iov_offload_set = true;
2751
2752         /* Fill information regarding queues; Should be done under the qede
2753          * lock to guarantee those don't change beneath our feet.
2754          */
2755         etlv->txqs_empty = true;
2756         etlv->rxqs_empty = true;
2757         etlv->num_txqs_full = 0;
2758         etlv->num_rxqs_full = 0;
2759
2760         __qede_lock(edev);
2761         for_each_queue(i) {
2762                 fp = &edev->fp_array[i];
2763                 if (fp->type & QEDE_FASTPATH_TX) {
2764                         struct qede_tx_queue *txq = QEDE_FP_TC0_TXQ(fp);
2765
2766                         if (txq->sw_tx_cons != txq->sw_tx_prod)
2767                                 etlv->txqs_empty = false;
2768                         if (qede_is_txq_full(edev, txq))
2769                                 etlv->num_txqs_full++;
2770                 }
2771                 if (fp->type & QEDE_FASTPATH_RX) {
2772                         if (qede_has_rx_work(fp->rxq))
2773                                 etlv->rxqs_empty = false;
2774
2775                         /* This one is a bit tricky; Firmware might stop
2776                          * placing packets if ring is not yet full.
2777                          * Give an approximation.
2778                          */
2779                         if (le16_to_cpu(*fp->rxq->hw_cons_ptr) -
2780                             qed_chain_get_cons_idx(&fp->rxq->rx_comp_ring) >
2781                             RX_RING_SIZE - 100)
2782                                 etlv->num_rxqs_full++;
2783                 }
2784         }
2785         __qede_unlock(edev);
2786
2787         etlv->txqs_empty_set = true;
2788         etlv->rxqs_empty_set = true;
2789         etlv->num_txqs_full_set = true;
2790         etlv->num_rxqs_full_set = true;
2791 }
2792
2793 /**
2794  * qede_io_error_detected - called when PCI error is detected
2795  * @pdev: Pointer to PCI device
2796  * @state: The current pci connection state
2797  *
2798  * This function is called after a PCI bus error affecting
2799  * this device has been detected.
2800  */
2801 static pci_ers_result_t
2802 qede_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2803 {
2804         struct net_device *dev = pci_get_drvdata(pdev);
2805         struct qede_dev *edev = netdev_priv(dev);
2806
2807         if (!edev)
2808                 return PCI_ERS_RESULT_NONE;
2809
2810         DP_NOTICE(edev, "IO error detected [%d]\n", state);
2811
2812         __qede_lock(edev);
2813         if (edev->state == QEDE_STATE_RECOVERY) {
2814                 DP_NOTICE(edev, "Device already in the recovery state\n");
2815                 __qede_unlock(edev);
2816                 return PCI_ERS_RESULT_NONE;
2817         }
2818
2819         /* PF handles the recovery of its VFs */
2820         if (IS_VF(edev)) {
2821                 DP_VERBOSE(edev, QED_MSG_IOV,
2822                            "VF recovery is handled by its PF\n");
2823                 __qede_unlock(edev);
2824                 return PCI_ERS_RESULT_RECOVERED;
2825         }
2826
2827         /* Close OS Tx */
2828         netif_tx_disable(edev->ndev);
2829         netif_carrier_off(edev->ndev);
2830
2831         set_bit(QEDE_SP_AER, &edev->sp_flags);
2832         schedule_delayed_work(&edev->sp_task, 0);
2833
2834         __qede_unlock(edev);
2835
2836         return PCI_ERS_RESULT_CAN_RECOVER;
2837 }