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

   1 /* QLogic qede NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32 #include <linux/module.h>
  33 #include <linux/pci.h>
  34 #include <linux/version.h>
  35 #include <linux/device.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/skbuff.h>
  39 #include <linux/errno.h>
  40 #include <linux/list.h>
  41 #include <linux/string.h>
  42 #include <linux/dma-mapping.h>
  43 #include <linux/interrupt.h>
  44 #include <asm/byteorder.h>
  45 #include <asm/param.h>
  46 #include <linux/io.h>
  47 #include <linux/netdev_features.h>
  48 #include <linux/udp.h>
  49 #include <linux/tcp.h>
  50 #include <net/udp_tunnel.h>
  51 #include <linux/ip.h>
  52 #include <net/ipv6.h>
  53 #include <net/tcp.h>
  54 #include <linux/if_ether.h>
  55 #include <linux/if_vlan.h>
  56 #include <linux/pkt_sched.h>
  57 #include <linux/ethtool.h>
  58 #include <linux/in.h>
  59 #include <linux/random.h>
  60 #include <net/ip6_checksum.h>
  61 #include <linux/bitops.h>
  62 #include <linux/vmalloc.h>
  63 #include "qede.h"
  64 #include "qede_ptp.h"
  65
  66 static char version[] =
  67         "QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
  68
  69 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
  70 MODULE_LICENSE("GPL");
  71 MODULE_VERSION(DRV_MODULE_VERSION);
  72
  73 static uint debug;
  74 module_param(debug, uint, 0);
  75 MODULE_PARM_DESC(debug, " Default debug msglevel");
  76
  77 static const struct qed_eth_ops *qed_ops;
  78
  79 #define CHIP_NUM_57980S_40              0x1634
  80 #define CHIP_NUM_57980S_10              0x1666
  81 #define CHIP_NUM_57980S_MF              0x1636
  82 #define CHIP_NUM_57980S_100             0x1644
  83 #define CHIP_NUM_57980S_50              0x1654
  84 #define CHIP_NUM_57980S_25              0x1656
  85 #define CHIP_NUM_57980S_IOV             0x1664
  86 #define CHIP_NUM_AH                     0x8070
  87 #define CHIP_NUM_AH_IOV                 0x8090
  88
  89 #ifndef PCI_DEVICE_ID_NX2_57980E
  90 #define PCI_DEVICE_ID_57980S_40         CHIP_NUM_57980S_40
  91 #define PCI_DEVICE_ID_57980S_10         CHIP_NUM_57980S_10
  92 #define PCI_DEVICE_ID_57980S_MF         CHIP_NUM_57980S_MF
  93 #define PCI_DEVICE_ID_57980S_100        CHIP_NUM_57980S_100
  94 #define PCI_DEVICE_ID_57980S_50         CHIP_NUM_57980S_50
  95 #define PCI_DEVICE_ID_57980S_25         CHIP_NUM_57980S_25
  96 #define PCI_DEVICE_ID_57980S_IOV        CHIP_NUM_57980S_IOV
  97 #define PCI_DEVICE_ID_AH                CHIP_NUM_AH
  98 #define PCI_DEVICE_ID_AH_IOV            CHIP_NUM_AH_IOV
  99
 100 #endif
 101
 102 enum qede_pci_private {
 103         QEDE_PRIVATE_PF,
 104         QEDE_PRIVATE_VF
 105 };
 106
 107 static const struct pci_device_id qede_pci_tbl[] = {
 108         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
 109         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
 110         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
 111         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
 112         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
 113         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
 114 #ifdef CONFIG_QED_SRIOV
 115         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
 116 #endif
 117         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH), QEDE_PRIVATE_PF},
 118 #ifdef CONFIG_QED_SRIOV
 119         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH_IOV), QEDE_PRIVATE_VF},
 120 #endif
 121         { 0 }
 122 };
 123
 124 MODULE_DEVICE_TABLE(pci, qede_pci_tbl);
 125
 126 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
 127
 128 #define TX_TIMEOUT              (5 * HZ)
 129
 130 /* Utilize last protocol index for XDP */
 131 #define XDP_PI  11
 132
 133 static void qede_remove(struct pci_dev *pdev);
 134 static void qede_shutdown(struct pci_dev *pdev);
 135 static void qede_link_update(void *dev, struct qed_link_output *link);
 136 static void qede_schedule_recovery_handler(void *dev);
 137 static void qede_recovery_handler(struct qede_dev *edev);
 138 static void qede_get_eth_tlv_data(void *edev, void *data);
 139 static void qede_get_generic_tlv_data(void *edev,
 140                                       struct qed_generic_tlvs *data);
 141
 142 #ifdef CONFIG_QED_SRIOV
 143 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos,
 144                             __be16 vlan_proto)
 145 {
 146         struct qede_dev *edev = netdev_priv(ndev);
 147
 148         if (vlan > 4095) {
 149                 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
 150                 return -EINVAL;
 151         }
 152
 153         if (vlan_proto != htons(ETH_P_8021Q))
 154                 return -EPROTONOSUPPORT;
 155
 156         DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
 157                    vlan, vf);
 158
 159         return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
 160 }
 161
 162 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
 163 {
 164         struct qede_dev *edev = netdev_priv(ndev);
 165
 166         DP_VERBOSE(edev, QED_MSG_IOV,
 167                    "Setting MAC %02x:%02x:%02x:%02x:%02x:%02x to VF [%d]\n",
 168                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], vfidx);
 169
 170         if (!is_valid_ether_addr(mac)) {
 171                 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
 172                 return -EINVAL;
 173         }
 174
 175         return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
 176 }
 177
 178 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
 179 {
 180         struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
 181         struct qed_dev_info *qed_info = &edev->dev_info.common;
 182         struct qed_update_vport_params *vport_params;
 183         int rc;
 184
 185         vport_params = vzalloc(sizeof(*vport_params));
 186         if (!vport_params)
 187                 return -ENOMEM;
 188         DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);
 189
 190         rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);
 191
 192         /* Enable/Disable Tx switching for PF */
 193         if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
 194             !qed_info->b_inter_pf_switch && qed_info->tx_switching) {
 195                 vport_params->vport_id = 0;
 196                 vport_params->update_tx_switching_flg = 1;
 197                 vport_params->tx_switching_flg = num_vfs_param ? 1 : 0;
 198                 edev->ops->vport_update(edev->cdev, vport_params);
 199         }
 200
 201         vfree(vport_params);
 202         return rc;
 203 }
 204 #endif
 205
 206 static struct pci_driver qede_pci_driver = {
 207         .name = "qede",
 208         .id_table = qede_pci_tbl,
 209         .probe = qede_probe,
 210         .remove = qede_remove,
 211         .shutdown = qede_shutdown,
 212 #ifdef CONFIG_QED_SRIOV
 213         .sriov_configure = qede_sriov_configure,
 214 #endif
 215 };
 216
 217 static struct qed_eth_cb_ops qede_ll_ops = {
 218         {
 219 #ifdef CONFIG_RFS_ACCEL
 220                 .arfs_filter_op = qede_arfs_filter_op,
 221 #endif
 222                 .link_update = qede_link_update,
 223                 .schedule_recovery_handler = qede_schedule_recovery_handler,
 224                 .get_generic_tlv_data = qede_get_generic_tlv_data,
 225                 .get_protocol_tlv_data = qede_get_eth_tlv_data,
 226         },
 227         .force_mac = qede_force_mac,
 228         .ports_update = qede_udp_ports_update,
 229 };
 230
 231 static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 232                              void *ptr)
 233 {
 234         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 235         struct ethtool_drvinfo drvinfo;
 236         struct qede_dev *edev;
 237
 238         if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
 239                 goto done;
 240
 241         /* Check whether this is a qede device */
 242         if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
 243                 goto done;
 244
 245         memset(&drvinfo, 0, sizeof(drvinfo));
 246         ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
 247         if (strcmp(drvinfo.driver, "qede"))
 248                 goto done;
 249         edev = netdev_priv(ndev);
 250
 251         switch (event) {
 252         case NETDEV_CHANGENAME:
 253                 /* Notify qed of the name change */
 254                 if (!edev->ops || !edev->ops->common)
 255                         goto done;
 256                 edev->ops->common->set_name(edev->cdev, edev->ndev->name);
 257                 break;
 258         case NETDEV_CHANGEADDR:
 259                 edev = netdev_priv(ndev);
 260                 qede_rdma_event_changeaddr(edev);
 261                 break;
 262         }
 263
 264 done:
 265         return NOTIFY_DONE;
 266 }
 267
 268 static struct notifier_block qede_netdev_notifier = {
 269         .notifier_call = qede_netdev_event,
 270 };
 271
 272 static
 273 int __init qede_init(void)
 274 {
 275         int ret;
 276
 277         pr_info("qede_init: %s\n", version);
 278
 279         qed_ops = qed_get_eth_ops();
 280         if (!qed_ops) {
 281                 pr_notice("Failed to get qed ethtool operations\n");
 282                 return -EINVAL;
 283         }
 284
 285         /* Must register notifier before pci ops, since we might miss
 286          * interface rename after pci probe and netdev registration.
 287          */
 288         ret = register_netdevice_notifier(&qede_netdev_notifier);
 289         if (ret) {
 290                 pr_notice("Failed to register netdevice_notifier\n");
 291                 qed_put_eth_ops();
 292                 return -EINVAL;
 293         }
 294
 295         ret = pci_register_driver(&qede_pci_driver);
 296         if (ret) {
 297                 pr_notice("Failed to register driver\n");
 298                 unregister_netdevice_notifier(&qede_netdev_notifier);
 299                 qed_put_eth_ops();
 300                 return -EINVAL;
 301         }
 302
 303         return 0;
 304 }
 305
 306 static void __exit qede_cleanup(void)
 307 {
 308         if (debug & QED_LOG_INFO_MASK)
 309                 pr_info("qede_cleanup called\n");
 310
 311         unregister_netdevice_notifier(&qede_netdev_notifier);
 312         pci_unregister_driver(&qede_pci_driver);
 313         qed_put_eth_ops();
 314 }
 315
 316 module_init(qede_init);
 317 module_exit(qede_cleanup);
 318
 319 static int qede_open(struct net_device *ndev);
 320 static int qede_close(struct net_device *ndev);
 321
 322 void qede_fill_by_demand_stats(struct qede_dev *edev)
 323 {
 324         struct qede_stats_common *p_common = &edev->stats.common;
 325         struct qed_eth_stats stats;
 326
 327         edev->ops->get_vport_stats(edev->cdev, &stats);
 328
 329         p_common->no_buff_discards = stats.common.no_buff_discards;
 330         p_common->packet_too_big_discard = stats.common.packet_too_big_discard;
 331         p_common->ttl0_discard = stats.common.ttl0_discard;
 332         p_common->rx_ucast_bytes = stats.common.rx_ucast_bytes;
 333         p_common->rx_mcast_bytes = stats.common.rx_mcast_bytes;
 334         p_common->rx_bcast_bytes = stats.common.rx_bcast_bytes;
 335         p_common->rx_ucast_pkts = stats.common.rx_ucast_pkts;
 336         p_common->rx_mcast_pkts = stats.common.rx_mcast_pkts;
 337         p_common->rx_bcast_pkts = stats.common.rx_bcast_pkts;
 338         p_common->mftag_filter_discards = stats.common.mftag_filter_discards;
 339         p_common->mac_filter_discards = stats.common.mac_filter_discards;
 340         p_common->gft_filter_drop = stats.common.gft_filter_drop;
 341
 342         p_common->tx_ucast_bytes = stats.common.tx_ucast_bytes;
 343         p_common->tx_mcast_bytes = stats.common.tx_mcast_bytes;
 344         p_common->tx_bcast_bytes = stats.common.tx_bcast_bytes;
 345         p_common->tx_ucast_pkts = stats.common.tx_ucast_pkts;
 346         p_common->tx_mcast_pkts = stats.common.tx_mcast_pkts;
 347         p_common->tx_bcast_pkts = stats.common.tx_bcast_pkts;
 348         p_common->tx_err_drop_pkts = stats.common.tx_err_drop_pkts;
 349         p_common->coalesced_pkts = stats.common.tpa_coalesced_pkts;
 350         p_common->coalesced_events = stats.common.tpa_coalesced_events;
 351         p_common->coalesced_aborts_num = stats.common.tpa_aborts_num;
 352         p_common->non_coalesced_pkts = stats.common.tpa_not_coalesced_pkts;
 353         p_common->coalesced_bytes = stats.common.tpa_coalesced_bytes;
 354
 355         p_common->rx_64_byte_packets = stats.common.rx_64_byte_packets;
 356         p_common->rx_65_to_127_byte_packets =
 357             stats.common.rx_65_to_127_byte_packets;
 358         p_common->rx_128_to_255_byte_packets =
 359             stats.common.rx_128_to_255_byte_packets;
 360         p_common->rx_256_to_511_byte_packets =
 361             stats.common.rx_256_to_511_byte_packets;
 362         p_common->rx_512_to_1023_byte_packets =
 363             stats.common.rx_512_to_1023_byte_packets;
 364         p_common->rx_1024_to_1518_byte_packets =
 365             stats.common.rx_1024_to_1518_byte_packets;
 366         p_common->rx_crc_errors = stats.common.rx_crc_errors;
 367         p_common->rx_mac_crtl_frames = stats.common.rx_mac_crtl_frames;
 368         p_common->rx_pause_frames = stats.common.rx_pause_frames;
 369         p_common->rx_pfc_frames = stats.common.rx_pfc_frames;
 370         p_common->rx_align_errors = stats.common.rx_align_errors;
 371         p_common->rx_carrier_errors = stats.common.rx_carrier_errors;
 372         p_common->rx_oversize_packets = stats.common.rx_oversize_packets;
 373         p_common->rx_jabbers = stats.common.rx_jabbers;
 374         p_common->rx_undersize_packets = stats.common.rx_undersize_packets;
 375         p_common->rx_fragments = stats.common.rx_fragments;
 376         p_common->tx_64_byte_packets = stats.common.tx_64_byte_packets;
 377         p_common->tx_65_to_127_byte_packets =
 378             stats.common.tx_65_to_127_byte_packets;
 379         p_common->tx_128_to_255_byte_packets =
 380             stats.common.tx_128_to_255_byte_packets;
 381         p_common->tx_256_to_511_byte_packets =
 382             stats.common.tx_256_to_511_byte_packets;
 383         p_common->tx_512_to_1023_byte_packets =
 384             stats.common.tx_512_to_1023_byte_packets;
 385         p_common->tx_1024_to_1518_byte_packets =
 386             stats.common.tx_1024_to_1518_byte_packets;
 387         p_common->tx_pause_frames = stats.common.tx_pause_frames;
 388         p_common->tx_pfc_frames = stats.common.tx_pfc_frames;
 389         p_common->brb_truncates = stats.common.brb_truncates;
 390         p_common->brb_discards = stats.common.brb_discards;
 391         p_common->tx_mac_ctrl_frames = stats.common.tx_mac_ctrl_frames;
 392         p_common->link_change_count = stats.common.link_change_count;
 393         p_common->ptp_skip_txts = edev->ptp_skip_txts;
 394
 395         if (QEDE_IS_BB(edev)) {
 396                 struct qede_stats_bb *p_bb = &edev->stats.bb;
 397
 398                 p_bb->rx_1519_to_1522_byte_packets =
 399                     stats.bb.rx_1519_to_1522_byte_packets;
 400                 p_bb->rx_1519_to_2047_byte_packets =
 401                     stats.bb.rx_1519_to_2047_byte_packets;
 402                 p_bb->rx_2048_to_4095_byte_packets =
 403                     stats.bb.rx_2048_to_4095_byte_packets;
 404                 p_bb->rx_4096_to_9216_byte_packets =
 405                     stats.bb.rx_4096_to_9216_byte_packets;
 406                 p_bb->rx_9217_to_16383_byte_packets =
 407                     stats.bb.rx_9217_to_16383_byte_packets;
 408                 p_bb->tx_1519_to_2047_byte_packets =
 409                     stats.bb.tx_1519_to_2047_byte_packets;
 410                 p_bb->tx_2048_to_4095_byte_packets =
 411                     stats.bb.tx_2048_to_4095_byte_packets;
 412                 p_bb->tx_4096_to_9216_byte_packets =
 413                     stats.bb.tx_4096_to_9216_byte_packets;
 414                 p_bb->tx_9217_to_16383_byte_packets =
 415                     stats.bb.tx_9217_to_16383_byte_packets;
 416                 p_bb->tx_lpi_entry_count = stats.bb.tx_lpi_entry_count;
 417                 p_bb->tx_total_collisions = stats.bb.tx_total_collisions;
 418         } else {
 419                 struct qede_stats_ah *p_ah = &edev->stats.ah;
 420
 421                 p_ah->rx_1519_to_max_byte_packets =
 422                     stats.ah.rx_1519_to_max_byte_packets;
 423                 p_ah->tx_1519_to_max_byte_packets =
 424                     stats.ah.tx_1519_to_max_byte_packets;
 425         }
 426 }
 427
 428 static void qede_get_stats64(struct net_device *dev,
 429                              struct rtnl_link_stats64 *stats)
 430 {
 431         struct qede_dev *edev = netdev_priv(dev);
 432         struct qede_stats_common *p_common;
 433
 434         qede_fill_by_demand_stats(edev);
 435         p_common = &edev->stats.common;
 436
 437         stats->rx_packets = p_common->rx_ucast_pkts + p_common->rx_mcast_pkts +
 438                             p_common->rx_bcast_pkts;
 439         stats->tx_packets = p_common->tx_ucast_pkts + p_common->tx_mcast_pkts +
 440                             p_common->tx_bcast_pkts;
 441
 442         stats->rx_bytes = p_common->rx_ucast_bytes + p_common->rx_mcast_bytes +
 443                           p_common->rx_bcast_bytes;
 444         stats->tx_bytes = p_common->tx_ucast_bytes + p_common->tx_mcast_bytes +
 445                           p_common->tx_bcast_bytes;
 446
 447         stats->tx_errors = p_common->tx_err_drop_pkts;
 448         stats->multicast = p_common->rx_mcast_pkts + p_common->rx_bcast_pkts;
 449
 450         stats->rx_fifo_errors = p_common->no_buff_discards;
 451
 452         if (QEDE_IS_BB(edev))
 453                 stats->collisions = edev->stats.bb.tx_total_collisions;
 454         stats->rx_crc_errors = p_common->rx_crc_errors;
 455         stats->rx_frame_errors = p_common->rx_align_errors;
 456 }
 457
 458 #ifdef CONFIG_QED_SRIOV
 459 static int qede_get_vf_config(struct net_device *dev, int vfidx,
 460                               struct ifla_vf_info *ivi)
 461 {
 462         struct qede_dev *edev = netdev_priv(dev);
 463
 464         if (!edev->ops)
 465                 return -EINVAL;
 466
 467         return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
 468 }
 469
 470 static int qede_set_vf_rate(struct net_device *dev, int vfidx,
 471                             int min_tx_rate, int max_tx_rate)
 472 {
 473         struct qede_dev *edev = netdev_priv(dev);
 474
 475         return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
 476                                         max_tx_rate);
 477 }
 478
 479 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
 480 {
 481         struct qede_dev *edev = netdev_priv(dev);
 482
 483         if (!edev->ops)
 484                 return -EINVAL;
 485
 486         return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
 487 }
 488
 489 static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
 490                                   int link_state)
 491 {
 492         struct qede_dev *edev = netdev_priv(dev);
 493
 494         if (!edev->ops)
 495                 return -EINVAL;
 496
 497         return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
 498 }
 499
 500 static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
 501 {
 502         struct qede_dev *edev = netdev_priv(dev);
 503
 504         if (!edev->ops)
 505                 return -EINVAL;
 506
 507         return edev->ops->iov->set_trust(edev->cdev, vfidx, setting);
 508 }
 509 #endif
 510
 511 static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 512 {
 513         struct qede_dev *edev = netdev_priv(dev);
 514
 515         if (!netif_running(dev))
 516                 return -EAGAIN;
 517
 518         switch (cmd) {
 519         case SIOCSHWTSTAMP:
 520                 return qede_ptp_hw_ts(edev, ifr);
 521         default:
 522                 DP_VERBOSE(edev, QED_MSG_DEBUG,
 523                            "default IOCTL cmd 0x%x\n", cmd);
 524                 return -EOPNOTSUPP;
 525         }
 526
 527         return 0;
 528 }
 529
 530 static int qede_setup_tc(struct net_device *ndev, u8 num_tc)
 531 {
 532         struct qede_dev *edev = netdev_priv(ndev);
 533         int cos, count, offset;
 534
 535         if (num_tc > edev->dev_info.num_tc)
 536                 return -EINVAL;
 537
 538         netdev_reset_tc(ndev);
 539         netdev_set_num_tc(ndev, num_tc);
 540
 541         for_each_cos_in_txq(edev, cos) {
 542                 count = QEDE_TSS_COUNT(edev);
 543                 offset = cos * QEDE_TSS_COUNT(edev);
 544                 netdev_set_tc_queue(ndev, cos, count, offset);
 545         }
 546
 547         return 0;
 548 }
 549
 550 static int
 551 qede_set_flower(struct qede_dev *edev, struct flow_cls_offload *f,
 552                 __be16 proto)
 553 {
 554         switch (f->command) {
 555         case FLOW_CLS_REPLACE:
 556                 return qede_add_tc_flower_fltr(edev, proto, f);
 557         case FLOW_CLS_DESTROY:
 558                 return qede_delete_flow_filter(edev, f->cookie);
 559         default:
 560                 return -EOPNOTSUPP;
 561         }
 562 }
 563
 564 static int qede_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 565                                   void *cb_priv)
 566 {
 567         struct flow_cls_offload *f;
 568         struct qede_dev *edev = cb_priv;
 569
 570         if (!tc_cls_can_offload_and_chain0(edev->ndev, type_data))
 571                 return -EOPNOTSUPP;
 572
 573         switch (type) {
 574         case TC_SETUP_CLSFLOWER:
 575                 f = type_data;
 576                 return qede_set_flower(edev, f, f->common.protocol);
 577         default:
 578                 return -EOPNOTSUPP;
 579         }
 580 }
 581
 582 static LIST_HEAD(qede_block_cb_list);
 583
 584 static int
 585 qede_setup_tc_offload(struct net_device *dev, enum tc_setup_type type,
 586                       void *type_data)
 587 {
 588         struct qede_dev *edev = netdev_priv(dev);
 589         struct tc_mqprio_qopt *mqprio;
 590
 591         switch (type) {
 592         case TC_SETUP_BLOCK:
 593                 return flow_block_cb_setup_simple(type_data,
 594                                                   &qede_block_cb_list,
 595                                                   qede_setup_tc_block_cb,
 596                                                   edev, edev, true);
 597         case TC_SETUP_QDISC_MQPRIO:
 598                 mqprio = type_data;
 599
 600                 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 601                 return qede_setup_tc(dev, mqprio->num_tc);
 602         default:
 603                 return -EOPNOTSUPP;
 604         }
 605 }
 606
 607 static const struct net_device_ops qede_netdev_ops = {
 608         .ndo_open = qede_open,
 609         .ndo_stop = qede_close,
 610         .ndo_start_xmit = qede_start_xmit,
 611         .ndo_select_queue = qede_select_queue,
 612         .ndo_set_rx_mode = qede_set_rx_mode,
 613         .ndo_set_mac_address = qede_set_mac_addr,
 614         .ndo_validate_addr = eth_validate_addr,
 615         .ndo_change_mtu = qede_change_mtu,
 616         .ndo_do_ioctl = qede_ioctl,
 617 #ifdef CONFIG_QED_SRIOV
 618         .ndo_set_vf_mac = qede_set_vf_mac,
 619         .ndo_set_vf_vlan = qede_set_vf_vlan,
 620         .ndo_set_vf_trust = qede_set_vf_trust,
 621 #endif
 622         .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 623         .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 624         .ndo_fix_features = qede_fix_features,
 625         .ndo_set_features = qede_set_features,
 626         .ndo_get_stats64 = qede_get_stats64,
 627 #ifdef CONFIG_QED_SRIOV
 628         .ndo_set_vf_link_state = qede_set_vf_link_state,
 629         .ndo_set_vf_spoofchk = qede_set_vf_spoofchk,
 630         .ndo_get_vf_config = qede_get_vf_config,
 631         .ndo_set_vf_rate = qede_set_vf_rate,
 632 #endif
 633         .ndo_udp_tunnel_add = qede_udp_tunnel_add,
 634         .ndo_udp_tunnel_del = qede_udp_tunnel_del,
 635         .ndo_features_check = qede_features_check,
 636         .ndo_bpf = qede_xdp,
 637 #ifdef CONFIG_RFS_ACCEL
 638         .ndo_rx_flow_steer = qede_rx_flow_steer,
 639 #endif
 640         .ndo_setup_tc = qede_setup_tc_offload,
 641 };
 642
 643 static const struct net_device_ops qede_netdev_vf_ops = {
 644         .ndo_open = qede_open,
 645         .ndo_stop = qede_close,
 646         .ndo_start_xmit = qede_start_xmit,
 647         .ndo_select_queue = qede_select_queue,
 648         .ndo_set_rx_mode = qede_set_rx_mode,
 649         .ndo_set_mac_address = qede_set_mac_addr,
 650         .ndo_validate_addr = eth_validate_addr,
 651         .ndo_change_mtu = qede_change_mtu,
 652         .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 653         .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 654         .ndo_fix_features = qede_fix_features,
 655         .ndo_set_features = qede_set_features,
 656         .ndo_get_stats64 = qede_get_stats64,
 657         .ndo_udp_tunnel_add = qede_udp_tunnel_add,
 658         .ndo_udp_tunnel_del = qede_udp_tunnel_del,
 659         .ndo_features_check = qede_features_check,
 660 };
 661
 662 static const struct net_device_ops qede_netdev_vf_xdp_ops = {
 663         .ndo_open = qede_open,
 664         .ndo_stop = qede_close,
 665         .ndo_start_xmit = qede_start_xmit,
 666         .ndo_select_queue = qede_select_queue,
 667         .ndo_set_rx_mode = qede_set_rx_mode,
 668         .ndo_set_mac_address = qede_set_mac_addr,
 669         .ndo_validate_addr = eth_validate_addr,
 670         .ndo_change_mtu = qede_change_mtu,
 671         .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 672         .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 673         .ndo_fix_features = qede_fix_features,
 674         .ndo_set_features = qede_set_features,
 675         .ndo_get_stats64 = qede_get_stats64,
 676         .ndo_udp_tunnel_add = qede_udp_tunnel_add,
 677         .ndo_udp_tunnel_del = qede_udp_tunnel_del,
 678         .ndo_features_check = qede_features_check,
 679         .ndo_bpf = qede_xdp,
 680 };
 681
 682 /* -------------------------------------------------------------------------
 683  * START OF PROBE / REMOVE
 684  * -------------------------------------------------------------------------
 685  */
 686
 687 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
 688                                             struct pci_dev *pdev,
 689                                             struct qed_dev_eth_info *info,
 690                                             u32 dp_module, u8 dp_level)
 691 {
 692         struct net_device *ndev;
 693         struct qede_dev *edev;
 694
 695         ndev = alloc_etherdev_mqs(sizeof(*edev),
 696                                   info->num_queues * info->num_tc,
 697                                   info->num_queues);
 698         if (!ndev) {
 699                 pr_err("etherdev allocation failed\n");
 700                 return NULL;
 701         }
 702
 703         edev = netdev_priv(ndev);
 704         edev->ndev = ndev;
 705         edev->cdev = cdev;
 706         edev->pdev = pdev;
 707         edev->dp_module = dp_module;
 708         edev->dp_level = dp_level;
 709         edev->ops = qed_ops;
 710         edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
 711         edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
 712
 713         DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n",
 714                 info->num_queues, info->num_queues);
 715
 716         SET_NETDEV_DEV(ndev, &pdev->dev);
 717
 718         memset(&edev->stats, 0, sizeof(edev->stats));
 719         memcpy(&edev->dev_info, info, sizeof(*info));
 720
 721         /* As ethtool doesn't have the ability to show WoL behavior as
 722          * 'default', if device supports it declare it's enabled.
 723          */
 724         if (edev->dev_info.common.wol_support)
 725                 edev->wol_enabled = true;
 726
 727         INIT_LIST_HEAD(&edev->vlan_list);
 728
 729         return edev;
 730 }
 731
 732 static void qede_init_ndev(struct qede_dev *edev)
 733 {
 734         struct net_device *ndev = edev->ndev;
 735         struct pci_dev *pdev = edev->pdev;
 736         bool udp_tunnel_enable = false;
 737         netdev_features_t hw_features;
 738
 739         pci_set_drvdata(pdev, ndev);
 740
 741         ndev->mem_start = edev->dev_info.common.pci_mem_start;
 742         ndev->base_addr = ndev->mem_start;
 743         ndev->mem_end = edev->dev_info.common.pci_mem_end;
 744         ndev->irq = edev->dev_info.common.pci_irq;
 745
 746         ndev->watchdog_timeo = TX_TIMEOUT;
 747
 748         if (IS_VF(edev)) {
 749                 if (edev->dev_info.xdp_supported)
 750                         ndev->netdev_ops = &qede_netdev_vf_xdp_ops;
 751                 else
 752                         ndev->netdev_ops = &qede_netdev_vf_ops;
 753         } else {
 754                 ndev->netdev_ops = &qede_netdev_ops;
 755         }
 756
 757         qede_set_ethtool_ops(ndev);
 758
 759         ndev->priv_flags |= IFF_UNICAST_FLT;
 760
 761         /* user-changeble features */
 762         hw_features = NETIF_F_GRO | NETIF_F_GRO_HW | NETIF_F_SG |
 763                       NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 764                       NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_TC;
 765
 766         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1)
 767                 hw_features |= NETIF_F_NTUPLE;
 768
 769         if (edev->dev_info.common.vxlan_enable ||
 770             edev->dev_info.common.geneve_enable)
 771                 udp_tunnel_enable = true;
 772
 773         if (udp_tunnel_enable || edev->dev_info.common.gre_enable) {
 774                 hw_features |= NETIF_F_TSO_ECN;
 775                 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 776                                         NETIF_F_SG | NETIF_F_TSO |
 777                                         NETIF_F_TSO_ECN | NETIF_F_TSO6 |
 778                                         NETIF_F_RXCSUM;
 779         }
 780
 781         if (udp_tunnel_enable) {
 782                 hw_features |= (NETIF_F_GSO_UDP_TUNNEL |
 783                                 NETIF_F_GSO_UDP_TUNNEL_CSUM);
 784                 ndev->hw_enc_features |= (NETIF_F_GSO_UDP_TUNNEL |
 785                                           NETIF_F_GSO_UDP_TUNNEL_CSUM);
 786         }
 787
 788         if (edev->dev_info.common.gre_enable) {
 789                 hw_features |= (NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM);
 790                 ndev->hw_enc_features |= (NETIF_F_GSO_GRE |
 791                                           NETIF_F_GSO_GRE_CSUM);
 792         }
 793
 794         ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 795                               NETIF_F_HIGHDMA;
 796         ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 797                          NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
 798                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
 799
 800         ndev->hw_features = hw_features;
 801
 802         /* MTU range: 46 - 9600 */
 803         ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 804         ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;
 805
 806         /* Set network device HW mac */
 807         ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
 808
 809         ndev->mtu = edev->dev_info.common.mtu;
 810 }
 811
 812 /* This function converts from 32b param to two params of level and module
 813  * Input 32b decoding:
 814  * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
 815  * 'happy' flow, e.g. memory allocation failed.
 816  * b30 - enable all INFO prints. INFO prints are for major steps in the flow
 817  * and provide important parameters.
 818  * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
 819  * module. VERBOSE prints are for tracking the specific flow in low level.
 820  *
 821  * Notice that the level should be that of the lowest required logs.
 822  */
 823 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
 824 {
 825         *p_dp_level = QED_LEVEL_NOTICE;
 826         *p_dp_module = 0;
 827
 828         if (debug & QED_LOG_VERBOSE_MASK) {
 829                 *p_dp_level = QED_LEVEL_VERBOSE;
 830                 *p_dp_module = (debug & 0x3FFFFFFF);
 831         } else if (debug & QED_LOG_INFO_MASK) {
 832                 *p_dp_level = QED_LEVEL_INFO;
 833         } else if (debug & QED_LOG_NOTICE_MASK) {
 834                 *p_dp_level = QED_LEVEL_NOTICE;
 835         }
 836 }
 837
 838 static void qede_free_fp_array(struct qede_dev *edev)
 839 {
 840         if (edev->fp_array) {
 841                 struct qede_fastpath *fp;
 842                 int i;
 843
 844                 for_each_queue(i) {
 845                         fp = &edev->fp_array[i];
 846
 847                         kfree(fp->sb_info);
 848                         /* Handle mem alloc failure case where qede_init_fp
 849                          * didn't register xdp_rxq_info yet.
 850                          * Implicit only (fp->type & QEDE_FASTPATH_RX)
 851                          */
 852                         if (fp->rxq && xdp_rxq_info_is_reg(&fp->rxq->xdp_rxq))
 853                                 xdp_rxq_info_unreg(&fp->rxq->xdp_rxq);
 854                         kfree(fp->rxq);
 855                         kfree(fp->xdp_tx);
 856                         kfree(fp->txq);
 857                 }
 858                 kfree(edev->fp_array);
 859         }
 860
 861         edev->num_queues = 0;
 862         edev->fp_num_tx = 0;
 863         edev->fp_num_rx = 0;
 864 }
 865
 866 static int qede_alloc_fp_array(struct qede_dev *edev)
 867 {
 868         u8 fp_combined, fp_rx = edev->fp_num_rx;
 869         struct qede_fastpath *fp;
 870         int i;
 871
 872         edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
 873                                  sizeof(*edev->fp_array), GFP_KERNEL);
 874         if (!edev->fp_array) {
 875                 DP_NOTICE(edev, "fp array allocation failed\n");
 876                 goto err;
 877         }
 878
 879         fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;
 880
 881         /* Allocate the FP elements for Rx queues followed by combined and then
 882          * the Tx. This ordering should be maintained so that the respective
 883          * queues (Rx or Tx) will be together in the fastpath array and the
 884          * associated ids will be sequential.
 885          */
 886         for_each_queue(i) {
 887                 fp = &edev->fp_array[i];
 888
 889                 fp->sb_info = kzalloc(sizeof(*fp->sb_info), GFP_KERNEL);
 890                 if (!fp->sb_info) {
 891                         DP_NOTICE(edev, "sb info struct allocation failed\n");
 892                         goto err;
 893                 }
 894
 895                 if (fp_rx) {
 896                         fp->type = QEDE_FASTPATH_RX;
 897                         fp_rx--;
 898                 } else if (fp_combined) {
 899                         fp->type = QEDE_FASTPATH_COMBINED;
 900                         fp_combined--;
 901                 } else {
 902                         fp->type = QEDE_FASTPATH_TX;
 903                 }
 904
 905                 if (fp->type & QEDE_FASTPATH_TX) {
 906                         fp->txq = kcalloc(edev->dev_info.num_tc,
 907                                           sizeof(*fp->txq), GFP_KERNEL);
 908                         if (!fp->txq)
 909                                 goto err;
 910                 }
 911
 912                 if (fp->type & QEDE_FASTPATH_RX) {
 913                         fp->rxq = kzalloc(sizeof(*fp->rxq), GFP_KERNEL);
 914                         if (!fp->rxq)
 915                                 goto err;
 916
 917                         if (edev->xdp_prog) {
 918                                 fp->xdp_tx = kzalloc(sizeof(*fp->xdp_tx),
 919                                                      GFP_KERNEL);
 920                                 if (!fp->xdp_tx)
 921                                         goto err;
 922                                 fp->type |= QEDE_FASTPATH_XDP;
 923                         }
 924                 }
 925         }
 926
 927         return 0;
 928 err:
 929         qede_free_fp_array(edev);
 930         return -ENOMEM;
 931 }
 932
 933 /* The qede lock is used to protect driver state change and driver flows that
 934  * are not reentrant.
 935  */
 936 void __qede_lock(struct qede_dev *edev)
 937 {
 938         mutex_lock(&edev->qede_lock);
 939 }
 940
 941 void __qede_unlock(struct qede_dev *edev)
 942 {
 943         mutex_unlock(&edev->qede_lock);
 944 }
 945
 946 /* This version of the lock should be used when acquiring the RTNL lock is also
 947  * needed in addition to the internal qede lock.
 948  */
 949 static void qede_lock(struct qede_dev *edev)
 950 {
 951         rtnl_lock();
 952         __qede_lock(edev);
 953 }
 954
 955 static void qede_unlock(struct qede_dev *edev)
 956 {
 957         __qede_unlock(edev);
 958         rtnl_unlock();
 959 }
 960
 961 static void qede_sp_task(struct work_struct *work)
 962 {
 963         struct qede_dev *edev = container_of(work, struct qede_dev,
 964                                              sp_task.work);
 965
 966         /* The locking scheme depends on the specific flag:
 967          * In case of QEDE_SP_RECOVERY, acquiring the RTNL lock is required to
 968          * ensure that ongoing flows are ended and new ones are not started.
 969          * In other cases - only the internal qede lock should be acquired.
 970          */
 971
 972         if (test_and_clear_bit(QEDE_SP_RECOVERY, &edev->sp_flags)) {
 973 #ifdef CONFIG_QED_SRIOV
 974                 /* SRIOV must be disabled outside the lock to avoid a deadlock.
 975                  * The recovery of the active VFs is currently not supported.
 976                  */
 977                 qede_sriov_configure(edev->pdev, 0);
 978 #endif
 979                 qede_lock(edev);
 980                 qede_recovery_handler(edev);
 981                 qede_unlock(edev);
 982         }
 983
 984         __qede_lock(edev);
 985
 986         if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
 987                 if (edev->state == QEDE_STATE_OPEN)
 988                         qede_config_rx_mode(edev->ndev);
 989
 990 #ifdef CONFIG_RFS_ACCEL
 991         if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) {
 992                 if (edev->state == QEDE_STATE_OPEN)
 993                         qede_process_arfs_filters(edev, false);
 994         }
 995 #endif
 996         __qede_unlock(edev);
 997 }
 998
 999 static void qede_update_pf_params(struct qed_dev *cdev)
1000 {
1001         struct qed_pf_params pf_params;
1002         u16 num_cons;
1003
1004         /* 64 rx + 64 tx + 64 XDP */
1005         memset(&pf_params, 0, sizeof(struct qed_pf_params));
1006
1007         /* 1 rx + 1 xdp + max tx cos */
1008         num_cons = QED_MIN_L2_CONS;
1009
1010         pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * num_cons;
1011
1012         /* Same for VFs - make sure they'll have sufficient connections
1013          * to support XDP Tx queues.
1014          */
1015         pf_params.eth_pf_params.num_vf_cons = 48;
1016
1017         pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR;
1018         qed_ops->common->update_pf_params(cdev, &pf_params);
1019 }
1020
1021 #define QEDE_FW_VER_STR_SIZE    80
1022
1023 static void qede_log_probe(struct qede_dev *edev)
1024 {
1025         struct qed_dev_info *p_dev_info = &edev->dev_info.common;
1026         u8 buf[QEDE_FW_VER_STR_SIZE];
1027         size_t left_size;
1028
1029         snprintf(buf, QEDE_FW_VER_STR_SIZE,
1030                  "Storm FW %d.%d.%d.%d, Management FW %d.%d.%d.%d",
1031                  p_dev_info->fw_major, p_dev_info->fw_minor, p_dev_info->fw_rev,
1032                  p_dev_info->fw_eng,
1033                  (p_dev_info->mfw_rev & QED_MFW_VERSION_3_MASK) >>
1034                  QED_MFW_VERSION_3_OFFSET,
1035                  (p_dev_info->mfw_rev & QED_MFW_VERSION_2_MASK) >>
1036                  QED_MFW_VERSION_2_OFFSET,
1037                  (p_dev_info->mfw_rev & QED_MFW_VERSION_1_MASK) >>
1038                  QED_MFW_VERSION_1_OFFSET,
1039                  (p_dev_info->mfw_rev & QED_MFW_VERSION_0_MASK) >>
1040                  QED_MFW_VERSION_0_OFFSET);
1041
1042         left_size = QEDE_FW_VER_STR_SIZE - strlen(buf);
1043         if (p_dev_info->mbi_version && left_size)
1044                 snprintf(buf + strlen(buf), left_size,
1045                          " [MBI %d.%d.%d]",
1046                          (p_dev_info->mbi_version & QED_MBI_VERSION_2_MASK) >>
1047                          QED_MBI_VERSION_2_OFFSET,
1048                          (p_dev_info->mbi_version & QED_MBI_VERSION_1_MASK) >>
1049                          QED_MBI_VERSION_1_OFFSET,
1050                          (p_dev_info->mbi_version & QED_MBI_VERSION_0_MASK) >>
1051                          QED_MBI_VERSION_0_OFFSET);
1052
1053         pr_info("qede %02x:%02x.%02x: %s [%s]\n", edev->pdev->bus->number,
1054                 PCI_SLOT(edev->pdev->devfn), PCI_FUNC(edev->pdev->devfn),
1055                 buf, edev->ndev->name);
1056 }
1057
1058 enum qede_probe_mode {
1059         QEDE_PROBE_NORMAL,
1060         QEDE_PROBE_RECOVERY,
1061 };
1062
1063 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
1064                         bool is_vf, enum qede_probe_mode mode)
1065 {
1066         struct qed_probe_params probe_params;
1067         struct qed_slowpath_params sp_params;
1068         struct qed_dev_eth_info dev_info;
1069         struct qede_dev *edev;
1070         struct qed_dev *cdev;
1071         int rc;
1072
1073         if (unlikely(dp_level & QED_LEVEL_INFO))
1074                 pr_notice("Starting qede probe\n");
1075
1076         memset(&probe_params, 0, sizeof(probe_params));
1077         probe_params.protocol = QED_PROTOCOL_ETH;
1078         probe_params.dp_module = dp_module;
1079         probe_params.dp_level = dp_level;
1080         probe_params.is_vf = is_vf;
1081         probe_params.recov_in_prog = (mode == QEDE_PROBE_RECOVERY);
1082         cdev = qed_ops->common->probe(pdev, &probe_params);
1083         if (!cdev) {
1084                 rc = -ENODEV;
1085                 goto err0;
1086         }
1087
1088         qede_update_pf_params(cdev);
1089
1090         /* Start the Slowpath-process */
1091         memset(&sp_params, 0, sizeof(sp_params));
1092         sp_params.int_mode = QED_INT_MODE_MSIX;
1093         sp_params.drv_major = QEDE_MAJOR_VERSION;
1094         sp_params.drv_minor = QEDE_MINOR_VERSION;
1095         sp_params.drv_rev = QEDE_REVISION_VERSION;
1096         sp_params.drv_eng = QEDE_ENGINEERING_VERSION;
1097         strlcpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
1098         rc = qed_ops->common->slowpath_start(cdev, &sp_params);
1099         if (rc) {
1100                 pr_notice("Cannot start slowpath\n");
1101                 goto err1;
1102         }
1103
1104         /* Learn information crucial for qede to progress */
1105         rc = qed_ops->fill_dev_info(cdev, &dev_info);
1106         if (rc)
1107                 goto err2;
1108
1109         if (mode != QEDE_PROBE_RECOVERY) {
1110                 edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
1111                                            dp_level);
1112                 if (!edev) {
1113                         rc = -ENOMEM;
1114                         goto err2;
1115                 }
1116         } else {
1117                 struct net_device *ndev = pci_get_drvdata(pdev);
1118
1119                 edev = netdev_priv(ndev);
1120                 edev->cdev = cdev;
1121                 memset(&edev->stats, 0, sizeof(edev->stats));
1122                 memcpy(&edev->dev_info, &dev_info, sizeof(dev_info));
1123         }
1124
1125         if (is_vf)
1126                 set_bit(QEDE_FLAGS_IS_VF, &edev->flags);
1127
1128         qede_init_ndev(edev);
1129
1130         rc = qede_rdma_dev_add(edev, (mode == QEDE_PROBE_RECOVERY));
1131         if (rc)
1132                 goto err3;
1133
1134         if (mode != QEDE_PROBE_RECOVERY) {
1135                 /* Prepare the lock prior to the registration of the netdev,
1136                  * as once it's registered we might reach flows requiring it
1137                  * [it's even possible to reach a flow needing it directly
1138                  * from there, although it's unlikely].
1139                  */
1140                 INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
1141                 mutex_init(&edev->qede_lock);
1142
1143                 rc = register_netdev(edev->ndev);
1144                 if (rc) {
1145                         DP_NOTICE(edev, "Cannot register net-device\n");
1146                         goto err4;
1147                 }
1148         }
1149
1150         edev->ops->common->set_name(cdev, edev->ndev->name);
1151
1152         /* PTP not supported on VFs */
1153         if (!is_vf)
1154                 qede_ptp_enable(edev, (mode == QEDE_PROBE_NORMAL));
1155
1156         edev->ops->register_ops(cdev, &qede_ll_ops, edev);
1157
1158 #ifdef CONFIG_DCB
1159         if (!IS_VF(edev))
1160                 qede_set_dcbnl_ops(edev->ndev);
1161 #endif
1162
1163         edev->rx_copybreak = QEDE_RX_HDR_SIZE;
1164
1165         qede_log_probe(edev);
1166         return 0;
1167
1168 err4:
1169         qede_rdma_dev_remove(edev, (mode == QEDE_PROBE_RECOVERY));
1170 err3:
1171         free_netdev(edev->ndev);
1172 err2:
1173         qed_ops->common->slowpath_stop(cdev);
1174 err1:
1175         qed_ops->common->remove(cdev);
1176 err0:
1177         return rc;
1178 }
1179
1180 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1181 {
1182         bool is_vf = false;
1183         u32 dp_module = 0;
1184         u8 dp_level = 0;
1185
1186         switch ((enum qede_pci_private)id->driver_data) {
1187         case QEDE_PRIVATE_VF:
1188                 if (debug & QED_LOG_VERBOSE_MASK)
1189                         dev_err(&pdev->dev, "Probing a VF\n");
1190                 is_vf = true;
1191                 break;
1192         default:
1193                 if (debug & QED_LOG_VERBOSE_MASK)
1194                         dev_err(&pdev->dev, "Probing a PF\n");
1195         }
1196
1197         qede_config_debug(debug, &dp_module, &dp_level);
1198
1199         return __qede_probe(pdev, dp_module, dp_level, is_vf,
1200                             QEDE_PROBE_NORMAL);
1201 }
1202
1203 enum qede_remove_mode {
1204         QEDE_REMOVE_NORMAL,
1205         QEDE_REMOVE_RECOVERY,
1206 };
1207
1208 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
1209 {
1210         struct net_device *ndev = pci_get_drvdata(pdev);
1211         struct qede_dev *edev = netdev_priv(ndev);
1212         struct qed_dev *cdev = edev->cdev;
1213
1214         DP_INFO(edev, "Starting qede_remove\n");
1215
1216         qede_rdma_dev_remove(edev, (mode == QEDE_REMOVE_RECOVERY));
1217
1218         if (mode != QEDE_REMOVE_RECOVERY) {
1219                 unregister_netdev(ndev);
1220
1221                 cancel_delayed_work_sync(&edev->sp_task);
1222
1223                 edev->ops->common->set_power_state(cdev, PCI_D0);
1224
1225                 pci_set_drvdata(pdev, NULL);
1226         }
1227
1228         qede_ptp_disable(edev);
1229
1230         /* Use global ops since we've freed edev */
1231         qed_ops->common->slowpath_stop(cdev);
1232         if (system_state == SYSTEM_POWER_OFF)
1233                 return;
1234         qed_ops->common->remove(cdev);
1235
1236         /* Since this can happen out-of-sync with other flows,
1237          * don't release the netdevice until after slowpath stop
1238          * has been called to guarantee various other contexts
1239          * [e.g., QED register callbacks] won't break anything when
1240          * accessing the netdevice.
1241          */
1242         if (mode != QEDE_REMOVE_RECOVERY)
1243                 free_netdev(ndev);
1244
1245         dev_info(&pdev->dev, "Ending qede_remove successfully\n");
1246 }
1247
1248 static void qede_remove(struct pci_dev *pdev)
1249 {
1250         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1251 }
1252
1253 static void qede_shutdown(struct pci_dev *pdev)
1254 {
1255         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
1256 }
1257
1258 /* -------------------------------------------------------------------------
1259  * START OF LOAD / UNLOAD
1260  * -------------------------------------------------------------------------
1261  */
1262
1263 static int qede_set_num_queues(struct qede_dev *edev)
1264 {
1265         int rc;
1266         u16 rss_num;
1267
1268         /* Setup queues according to possible resources*/
1269         if (edev->req_queues)
1270                 rss_num = edev->req_queues;
1271         else
1272                 rss_num = netif_get_num_default_rss_queues() *
1273                           edev->dev_info.common.num_hwfns;
1274
1275         rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
1276
1277         rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
1278         if (rc > 0) {
1279                 /* Managed to request interrupts for our queues */
1280                 edev->num_queues = rc;
1281                 DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
1282                         QEDE_QUEUE_CNT(edev), rss_num);
1283                 rc = 0;
1284         }
1285
1286         edev->fp_num_tx = edev->req_num_tx;
1287         edev->fp_num_rx = edev->req_num_rx;
1288
1289         return rc;
1290 }
1291
1292 static void qede_free_mem_sb(struct qede_dev *edev, struct qed_sb_info *sb_info,
1293                              u16 sb_id)
1294 {
1295         if (sb_info->sb_virt) {
1296                 edev->ops->common->sb_release(edev->cdev, sb_info, sb_id,
1297                                               QED_SB_TYPE_L2_QUEUE);
1298                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
1299                                   (void *)sb_info->sb_virt, sb_info->sb_phys);
1300                 memset(sb_info, 0, sizeof(*sb_info));
1301         }
1302 }
1303
1304 /* This function allocates fast-path status block memory */
1305 static int qede_alloc_mem_sb(struct qede_dev *edev,
1306                              struct qed_sb_info *sb_info, u16 sb_id)
1307 {
1308         struct status_block_e4 *sb_virt;
1309         dma_addr_t sb_phys;
1310         int rc;
1311
1312         sb_virt = dma_alloc_coherent(&edev->pdev->dev,
1313                                      sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
1314         if (!sb_virt) {
1315                 DP_ERR(edev, "Status block allocation failed\n");
1316                 return -ENOMEM;
1317         }
1318
1319         rc = edev->ops->common->sb_init(edev->cdev, sb_info,
1320                                         sb_virt, sb_phys, sb_id,
1321                                         QED_SB_TYPE_L2_QUEUE);
1322         if (rc) {
1323                 DP_ERR(edev, "Status block initialization failed\n");
1324                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
1325                                   sb_virt, sb_phys);
1326                 return rc;
1327         }
1328
1329         return 0;
1330 }
1331
1332 static void qede_free_rx_buffers(struct qede_dev *edev,
1333                                  struct qede_rx_queue *rxq)
1334 {
1335         u16 i;
1336
1337         for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
1338                 struct sw_rx_data *rx_buf;
1339                 struct page *data;
1340
1341                 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
1342                 data = rx_buf->data;
1343
1344                 dma_unmap_page(&edev->pdev->dev,
1345                                rx_buf->mapping, PAGE_SIZE, rxq->data_direction);
1346
1347                 rx_buf->data = NULL;
1348                 __free_page(data);
1349         }
1350 }
1351
1352 static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1353 {
1354         /* Free rx buffers */
1355         qede_free_rx_buffers(edev, rxq);
1356
1357         /* Free the parallel SW ring */
1358         kfree(rxq->sw_rx_ring);
1359
1360         /* Free the real RQ ring used by FW */
1361         edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
1362         edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
1363 }
1364
1365 static void qede_set_tpa_param(struct qede_rx_queue *rxq)
1366 {
1367         int i;
1368
1369         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1370                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1371
1372                 tpa_info->state = QEDE_AGG_STATE_NONE;
1373         }
1374 }
1375
1376 /* This function allocates all memory needed per Rx queue */
1377 static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1378 {
1379         int i, rc, size;
1380
1381         rxq->num_rx_buffers = edev->q_num_rx_buffers;
1382
1383         rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;
1384
1385         rxq->rx_headroom = edev->xdp_prog ? XDP_PACKET_HEADROOM : NET_SKB_PAD;
1386         size = rxq->rx_headroom +
1387                SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
1388
1389         /* Make sure that the headroom and  payload fit in a single page */
1390         if (rxq->rx_buf_size + size > PAGE_SIZE)
1391                 rxq->rx_buf_size = PAGE_SIZE - size;
1392
1393         /* Segment size to spilt a page in multiple equal parts ,
1394          * unless XDP is used in which case we'd use the entire page.
1395          */
1396         if (!edev->xdp_prog) {
1397                 size = size + rxq->rx_buf_size;
1398                 rxq->rx_buf_seg_size = roundup_pow_of_two(size);
1399         } else {
1400                 rxq->rx_buf_seg_size = PAGE_SIZE;
1401         }
1402
1403         /* Allocate the parallel driver ring for Rx buffers */
1404         size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
1405         rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
1406         if (!rxq->sw_rx_ring) {
1407                 DP_ERR(edev, "Rx buffers ring allocation failed\n");
1408                 rc = -ENOMEM;
1409                 goto err;
1410         }
1411
1412         /* Allocate FW Rx ring  */
1413         rc = edev->ops->common->chain_alloc(edev->cdev,
1414                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1415                                             QED_CHAIN_MODE_NEXT_PTR,
1416                                             QED_CHAIN_CNT_TYPE_U16,
1417                                             RX_RING_SIZE,
1418                                             sizeof(struct eth_rx_bd),
1419                                             &rxq->rx_bd_ring, NULL);
1420         if (rc)
1421                 goto err;
1422
1423         /* Allocate FW completion ring */
1424         rc = edev->ops->common->chain_alloc(edev->cdev,
1425                                             QED_CHAIN_USE_TO_CONSUME,
1426                                             QED_CHAIN_MODE_PBL,
1427                                             QED_CHAIN_CNT_TYPE_U16,
1428                                             RX_RING_SIZE,
1429                                             sizeof(union eth_rx_cqe),
1430                                             &rxq->rx_comp_ring, NULL);
1431         if (rc)
1432                 goto err;
1433
1434         /* Allocate buffers for the Rx ring */
1435         rxq->filled_buffers = 0;
1436         for (i = 0; i < rxq->num_rx_buffers; i++) {
1437                 rc = qede_alloc_rx_buffer(rxq, false);
1438                 if (rc) {
1439                         DP_ERR(edev,
1440                                "Rx buffers allocation failed at index %d\n", i);
1441                         goto err;
1442                 }
1443         }
1444
1445         if (!edev->gro_disable)
1446                 qede_set_tpa_param(rxq);
1447 err:
1448         return rc;
1449 }
1450
1451 static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1452 {
1453         /* Free the parallel SW ring */
1454         if (txq->is_xdp)
1455                 kfree(txq->sw_tx_ring.xdp);
1456         else
1457                 kfree(txq->sw_tx_ring.skbs);
1458
1459         /* Free the real RQ ring used by FW */
1460         edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
1461 }
1462
1463 /* This function allocates all memory needed per Tx queue */
1464 static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1465 {
1466         union eth_tx_bd_types *p_virt;
1467         int size, rc;
1468
1469         txq->num_tx_buffers = edev->q_num_tx_buffers;
1470
1471         /* Allocate the parallel driver ring for Tx buffers */
1472         if (txq->is_xdp) {
1473                 size = sizeof(*txq->sw_tx_ring.xdp) * txq->num_tx_buffers;
1474                 txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL);
1475                 if (!txq->sw_tx_ring.xdp)
1476                         goto err;
1477         } else {
1478                 size = sizeof(*txq->sw_tx_ring.skbs) * txq->num_tx_buffers;
1479                 txq->sw_tx_ring.skbs = kzalloc(size, GFP_KERNEL);
1480                 if (!txq->sw_tx_ring.skbs)
1481                         goto err;
1482         }
1483
1484         rc = edev->ops->common->chain_alloc(edev->cdev,
1485                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1486                                             QED_CHAIN_MODE_PBL,
1487                                             QED_CHAIN_CNT_TYPE_U16,
1488                                             txq->num_tx_buffers,
1489                                             sizeof(*p_virt),
1490                                             &txq->tx_pbl, NULL);
1491         if (rc)
1492                 goto err;
1493
1494         return 0;
1495
1496 err:
1497         qede_free_mem_txq(edev, txq);
1498         return -ENOMEM;
1499 }
1500
1501 /* This function frees all memory of a single fp */
1502 static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1503 {
1504         qede_free_mem_sb(edev, fp->sb_info, fp->id);
1505
1506         if (fp->type & QEDE_FASTPATH_RX)
1507                 qede_free_mem_rxq(edev, fp->rxq);
1508
1509         if (fp->type & QEDE_FASTPATH_XDP)
1510                 qede_free_mem_txq(edev, fp->xdp_tx);
1511
1512         if (fp->type & QEDE_FASTPATH_TX) {
1513                 int cos;
1514
1515                 for_each_cos_in_txq(edev, cos)
1516                         qede_free_mem_txq(edev, &fp->txq[cos]);
1517         }
1518 }
1519
1520 /* This function allocates all memory needed for a single fp (i.e. an entity
1521  * which contains status block, one rx queue and/or multiple per-TC tx queues.
1522  */
1523 static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1524 {
1525         int rc = 0;
1526
1527         rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
1528         if (rc)
1529                 goto out;
1530
1531         if (fp->type & QEDE_FASTPATH_RX) {
1532                 rc = qede_alloc_mem_rxq(edev, fp->rxq);
1533                 if (rc)
1534                         goto out;
1535         }
1536
1537         if (fp->type & QEDE_FASTPATH_XDP) {
1538                 rc = qede_alloc_mem_txq(edev, fp->xdp_tx);
1539                 if (rc)
1540                         goto out;
1541         }
1542
1543         if (fp->type & QEDE_FASTPATH_TX) {
1544                 int cos;
1545
1546                 for_each_cos_in_txq(edev, cos) {
1547                         rc = qede_alloc_mem_txq(edev, &fp->txq[cos]);
1548                         if (rc)
1549                                 goto out;
1550                 }
1551         }
1552
1553 out:
1554         return rc;
1555 }
1556
1557 static void qede_free_mem_load(struct qede_dev *edev)
1558 {
1559         int i;
1560
1561         for_each_queue(i) {
1562                 struct qede_fastpath *fp = &edev->fp_array[i];
1563
1564                 qede_free_mem_fp(edev, fp);
1565         }
1566 }
1567
1568 /* This function allocates all qede memory at NIC load. */
1569 static int qede_alloc_mem_load(struct qede_dev *edev)
1570 {
1571         int rc = 0, queue_id;
1572
1573         for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
1574                 struct qede_fastpath *fp = &edev->fp_array[queue_id];
1575
1576                 rc = qede_alloc_mem_fp(edev, fp);
1577                 if (rc) {
1578                         DP_ERR(edev,
1579                                "Failed to allocate memory for fastpath - rss id = %d\n",
1580                                queue_id);
1581                         qede_free_mem_load(edev);
1582                         return rc;
1583                 }
1584         }
1585
1586         return 0;
1587 }
1588
1589 static void qede_empty_tx_queue(struct qede_dev *edev,
1590                                 struct qede_tx_queue *txq)
1591 {
1592         unsigned int pkts_compl = 0, bytes_compl = 0;
1593         struct netdev_queue *netdev_txq;
1594         int rc, len = 0;
1595
1596         netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id);
1597
1598         while (qed_chain_get_cons_idx(&txq->tx_pbl) !=
1599                qed_chain_get_prod_idx(&txq->tx_pbl)) {
1600                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
1601                            "Freeing a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n",
1602                            txq->index, qed_chain_get_cons_idx(&txq->tx_pbl),
1603                            qed_chain_get_prod_idx(&txq->tx_pbl));
1604
1605                 rc = qede_free_tx_pkt(edev, txq, &len);
1606                 if (rc) {
1607                         DP_NOTICE(edev,
1608                                   "Failed to free a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n",
1609                                   txq->index,
1610                                   qed_chain_get_cons_idx(&txq->tx_pbl),
1611                                   qed_chain_get_prod_idx(&txq->tx_pbl));
1612                         break;
1613                 }
1614
1615                 bytes_compl += len;
1616                 pkts_compl++;
1617                 txq->sw_tx_cons++;
1618         }
1619
1620         netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl);
1621 }
1622
1623 static void qede_empty_tx_queues(struct qede_dev *edev)
1624 {
1625         int i;
1626
1627         for_each_queue(i)
1628                 if (edev->fp_array[i].type & QEDE_FASTPATH_TX) {
1629                         int cos;
1630
1631                         for_each_cos_in_txq(edev, cos) {
1632                                 struct qede_fastpath *fp;
1633
1634                                 fp = &edev->fp_array[i];
1635                                 qede_empty_tx_queue(edev,
1636                                                     &fp->txq[cos]);
1637                         }
1638                 }
1639 }
1640
1641 /* This function inits fp content and resets the SB, RXQ and TXQ structures */
1642 static void qede_init_fp(struct qede_dev *edev)
1643 {
1644         int queue_id, rxq_index = 0, txq_index = 0;
1645         struct qede_fastpath *fp;
1646
1647         for_each_queue(queue_id) {
1648                 fp = &edev->fp_array[queue_id];
1649
1650                 fp->edev = edev;
1651                 fp->id = queue_id;
1652
1653                 if (fp->type & QEDE_FASTPATH_XDP) {
1654                         fp->xdp_tx->index = QEDE_TXQ_IDX_TO_XDP(edev,
1655                                                                 rxq_index);
1656                         fp->xdp_tx->is_xdp = 1;
1657                 }
1658
1659                 if (fp->type & QEDE_FASTPATH_RX) {
1660                         fp->rxq->rxq_id = rxq_index++;
1661
1662                         /* Determine how to map buffers for this queue */
1663                         if (fp->type & QEDE_FASTPATH_XDP)
1664                                 fp->rxq->data_direction = DMA_BIDIRECTIONAL;
1665                         else
1666                                 fp->rxq->data_direction = DMA_FROM_DEVICE;
1667                         fp->rxq->dev = &edev->pdev->dev;
1668
1669                         /* Driver have no error path from here */
1670                         WARN_ON(xdp_rxq_info_reg(&fp->rxq->xdp_rxq, edev->ndev,
1671                                                  fp->rxq->rxq_id) < 0);
1672                 }
1673
1674                 if (fp->type & QEDE_FASTPATH_TX) {
1675                         int cos;
1676
1677                         for_each_cos_in_txq(edev, cos) {
1678                                 struct qede_tx_queue *txq = &fp->txq[cos];
1679                                 u16 ndev_tx_id;
1680
1681                                 txq->cos = cos;
1682                                 txq->index = txq_index;
1683                                 ndev_tx_id = QEDE_TXQ_TO_NDEV_TXQ_ID(edev, txq);
1684                                 txq->ndev_txq_id = ndev_tx_id;
1685
1686                                 if (edev->dev_info.is_legacy)
1687                                         txq->is_legacy = 1;
1688                                 txq->dev = &edev->pdev->dev;
1689                         }
1690
1691                         txq_index++;
1692                 }
1693
1694                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1695                          edev->ndev->name, queue_id);
1696         }
1697
1698         edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO_HW);
1699 }
1700
1701 static int qede_set_real_num_queues(struct qede_dev *edev)
1702 {
1703         int rc = 0;
1704
1705         rc = netif_set_real_num_tx_queues(edev->ndev,
1706                                           QEDE_TSS_COUNT(edev) *
1707                                           edev->dev_info.num_tc);
1708         if (rc) {
1709                 DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
1710                 return rc;
1711         }
1712
1713         rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
1714         if (rc) {
1715                 DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
1716                 return rc;
1717         }
1718
1719         return 0;
1720 }
1721
1722 static void qede_napi_disable_remove(struct qede_dev *edev)
1723 {
1724         int i;
1725
1726         for_each_queue(i) {
1727                 napi_disable(&edev->fp_array[i].napi);
1728
1729                 netif_napi_del(&edev->fp_array[i].napi);
1730         }
1731 }
1732
1733 static void qede_napi_add_enable(struct qede_dev *edev)
1734 {
1735         int i;
1736
1737         /* Add NAPI objects */
1738         for_each_queue(i) {
1739                 netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
1740                                qede_poll, NAPI_POLL_WEIGHT);
1741                 napi_enable(&edev->fp_array[i].napi);
1742         }
1743 }
1744
1745 static void qede_sync_free_irqs(struct qede_dev *edev)
1746 {
1747         int i;
1748
1749         for (i = 0; i < edev->int_info.used_cnt; i++) {
1750                 if (edev->int_info.msix_cnt) {
1751                         synchronize_irq(edev->int_info.msix[i].vector);
1752                         free_irq(edev->int_info.msix[i].vector,
1753                                  &edev->fp_array[i]);
1754                 } else {
1755                         edev->ops->common->simd_handler_clean(edev->cdev, i);
1756                 }
1757         }
1758
1759         edev->int_info.used_cnt = 0;
1760 }
1761
1762 static int qede_req_msix_irqs(struct qede_dev *edev)
1763 {
1764         int i, rc;
1765
1766         /* Sanitize number of interrupts == number of prepared RSS queues */
1767         if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
1768                 DP_ERR(edev,
1769                        "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
1770                        QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
1771                 return -EINVAL;
1772         }
1773
1774         for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
1775 #ifdef CONFIG_RFS_ACCEL
1776                 struct qede_fastpath *fp = &edev->fp_array[i];
1777
1778                 if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) {
1779                         rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap,
1780                                               edev->int_info.msix[i].vector);
1781                         if (rc) {
1782                                 DP_ERR(edev, "Failed to add CPU rmap\n");
1783                                 qede_free_arfs(edev);
1784                         }
1785                 }
1786 #endif
1787                 rc = request_irq(edev->int_info.msix[i].vector,
1788                                  qede_msix_fp_int, 0, edev->fp_array[i].name,
1789                                  &edev->fp_array[i]);
1790                 if (rc) {
1791                         DP_ERR(edev, "Request fp %d irq failed\n", i);
1792                         qede_sync_free_irqs(edev);
1793                         return rc;
1794                 }
1795                 DP_VERBOSE(edev, NETIF_MSG_INTR,
1796                            "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
1797                            edev->fp_array[i].name, i,
1798                            &edev->fp_array[i]);
1799                 edev->int_info.used_cnt++;
1800         }
1801
1802         return 0;
1803 }
1804
1805 static void qede_simd_fp_handler(void *cookie)
1806 {
1807         struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
1808
1809         napi_schedule_irqoff(&fp->napi);
1810 }
1811
1812 static int qede_setup_irqs(struct qede_dev *edev)
1813 {
1814         int i, rc = 0;
1815
1816         /* Learn Interrupt configuration */
1817         rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
1818         if (rc)
1819                 return rc;
1820
1821         if (edev->int_info.msix_cnt) {
1822                 rc = qede_req_msix_irqs(edev);
1823                 if (rc)
1824                         return rc;
1825                 edev->ndev->irq = edev->int_info.msix[0].vector;
1826         } else {
1827                 const struct qed_common_ops *ops;
1828
1829                 /* qed should learn receive the RSS ids and callbacks */
1830                 ops = edev->ops->common;
1831                 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
1832                         ops->simd_handler_config(edev->cdev,
1833                                                  &edev->fp_array[i], i,
1834                                                  qede_simd_fp_handler);
1835                 edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
1836         }
1837         return 0;
1838 }
1839
1840 static int qede_drain_txq(struct qede_dev *edev,
1841                           struct qede_tx_queue *txq, bool allow_drain)
1842 {
1843         int rc, cnt = 1000;
1844
1845         while (txq->sw_tx_cons != txq->sw_tx_prod) {
1846                 if (!cnt) {
1847                         if (allow_drain) {
1848                                 DP_NOTICE(edev,
1849                                           "Tx queue[%d] is stuck, requesting MCP to drain\n",
1850                                           txq->index);
1851                                 rc = edev->ops->common->drain(edev->cdev);
1852                                 if (rc)
1853                                         return rc;
1854                                 return qede_drain_txq(edev, txq, false);
1855                         }
1856                         DP_NOTICE(edev,
1857                                   "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
1858                                   txq->index, txq->sw_tx_prod,
1859                                   txq->sw_tx_cons);
1860                         return -ENODEV;
1861                 }
1862                 cnt--;
1863                 usleep_range(1000, 2000);
1864                 barrier();
1865         }
1866
1867         /* FW finished processing, wait for HW to transmit all tx packets */
1868         usleep_range(1000, 2000);
1869
1870         return 0;
1871 }
1872
1873 static int qede_stop_txq(struct qede_dev *edev,
1874                          struct qede_tx_queue *txq, int rss_id)
1875 {
1876         /* delete doorbell from doorbell recovery mechanism */
1877         edev->ops->common->db_recovery_del(edev->cdev, txq->doorbell_addr,
1878                                            &txq->tx_db);
1879
1880         return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle);
1881 }
1882
1883 static int qede_stop_queues(struct qede_dev *edev)
1884 {
1885         struct qed_update_vport_params *vport_update_params;
1886         struct qed_dev *cdev = edev->cdev;
1887         struct qede_fastpath *fp;
1888         int rc, i;
1889
1890         /* Disable the vport */
1891         vport_update_params = vzalloc(sizeof(*vport_update_params));
1892         if (!vport_update_params)
1893                 return -ENOMEM;
1894
1895         vport_update_params->vport_id = 0;
1896         vport_update_params->update_vport_active_flg = 1;
1897         vport_update_params->vport_active_flg = 0;
1898         vport_update_params->update_rss_flg = 0;
1899
1900         rc = edev->ops->vport_update(cdev, vport_update_params);
1901         vfree(vport_update_params);
1902
1903         if (rc) {
1904                 DP_ERR(edev, "Failed to update vport\n");
1905                 return rc;
1906         }
1907
1908         /* Flush Tx queues. If needed, request drain from MCP */
1909         for_each_queue(i) {
1910                 fp = &edev->fp_array[i];
1911
1912                 if (fp->type & QEDE_FASTPATH_TX) {
1913                         int cos;
1914
1915                         for_each_cos_in_txq(edev, cos) {
1916                                 rc = qede_drain_txq(edev, &fp->txq[cos], true);
1917                                 if (rc)
1918                                         return rc;
1919                         }
1920                 }
1921
1922                 if (fp->type & QEDE_FASTPATH_XDP) {
1923                         rc = qede_drain_txq(edev, fp->xdp_tx, true);
1924                         if (rc)
1925                                 return rc;
1926                 }
1927         }
1928
1929         /* Stop all Queues in reverse order */
1930         for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
1931                 fp = &edev->fp_array[i];
1932
1933                 /* Stop the Tx Queue(s) */
1934                 if (fp->type & QEDE_FASTPATH_TX) {
1935                         int cos;
1936
1937                         for_each_cos_in_txq(edev, cos) {
1938                                 rc = qede_stop_txq(edev, &fp->txq[cos], i);
1939                                 if (rc)
1940                                         return rc;
1941                         }
1942                 }
1943
1944                 /* Stop the Rx Queue */
1945                 if (fp->type & QEDE_FASTPATH_RX) {
1946                         rc = edev->ops->q_rx_stop(cdev, i, fp->rxq->handle);
1947                         if (rc) {
1948                                 DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
1949                                 return rc;
1950                         }
1951                 }
1952
1953                 /* Stop the XDP forwarding queue */
1954                 if (fp->type & QEDE_FASTPATH_XDP) {
1955                         rc = qede_stop_txq(edev, fp->xdp_tx, i);
1956                         if (rc)
1957                                 return rc;
1958
1959                         bpf_prog_put(fp->rxq->xdp_prog);
1960                 }
1961         }
1962
1963         /* Stop the vport */
1964         rc = edev->ops->vport_stop(cdev, 0);
1965         if (rc)
1966                 DP_ERR(edev, "Failed to stop VPORT\n");
1967
1968         return rc;
1969 }
1970
1971 static int qede_start_txq(struct qede_dev *edev,
1972                           struct qede_fastpath *fp,
1973                           struct qede_tx_queue *txq, u8 rss_id, u16 sb_idx)
1974 {
1975         dma_addr_t phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
1976         u32 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
1977         struct qed_queue_start_common_params params;
1978         struct qed_txq_start_ret_params ret_params;
1979         int rc;
1980
1981         memset(&params, 0, sizeof(params));
1982         memset(&ret_params, 0, sizeof(ret_params));
1983
1984         /* Let the XDP queue share the queue-zone with one of the regular txq.
1985          * We don't really care about its coalescing.
1986          */
1987         if (txq->is_xdp)
1988                 params.queue_id = QEDE_TXQ_XDP_TO_IDX(edev, txq);
1989         else
1990                 params.queue_id = txq->index;
1991
1992         params.p_sb = fp->sb_info;
1993         params.sb_idx = sb_idx;
1994         params.tc = txq->cos;
1995
1996         rc = edev->ops->q_tx_start(edev->cdev, rss_id, &params, phys_table,
1997                                    page_cnt, &ret_params);
1998         if (rc) {
1999                 DP_ERR(edev, "Start TXQ #%d failed %d\n", txq->index, rc);
2000                 return rc;
2001         }
2002
2003         txq->doorbell_addr = ret_params.p_doorbell;
2004         txq->handle = ret_params.p_handle;
2005
2006         /* Determine the FW consumer address associated */
2007         txq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[sb_idx];
2008
2009         /* Prepare the doorbell parameters */
2010         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_DEST, DB_DEST_XCM);
2011         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
2012         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_VAL_SEL,
2013                   DQ_XCM_ETH_TX_BD_PROD_CMD);
2014         txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
2015
2016         /* register doorbell with doorbell recovery mechanism */
2017         rc = edev->ops->common->db_recovery_add(edev->cdev, txq->doorbell_addr,
2018                                                 &txq->tx_db, DB_REC_WIDTH_32B,
2019                                                 DB_REC_KERNEL);
2020
2021         return rc;
2022 }
2023
2024 static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
2025 {
2026         int vlan_removal_en = 1;
2027         struct qed_dev *cdev = edev->cdev;
2028         struct qed_dev_info *qed_info = &edev->dev_info.common;
2029         struct qed_update_vport_params *vport_update_params;
2030         struct qed_queue_start_common_params q_params;
2031         struct qed_start_vport_params start = {0};
2032         int rc, i;
2033
2034         if (!edev->num_queues) {
2035                 DP_ERR(edev,
2036                        "Cannot update V-VPORT as active as there are no Rx queues\n");
2037                 return -EINVAL;
2038         }
2039
2040         vport_update_params = vzalloc(sizeof(*vport_update_params));
2041         if (!vport_update_params)
2042                 return -ENOMEM;
2043
2044         start.handle_ptp_pkts = !!(edev->ptp);
2045         start.gro_enable = !edev->gro_disable;
2046         start.mtu = edev->ndev->mtu;
2047         start.vport_id = 0;
2048         start.drop_ttl0 = true;
2049         start.remove_inner_vlan = vlan_removal_en;
2050         start.clear_stats = clear_stats;
2051
2052         rc = edev->ops->vport_start(cdev, &start);
2053
2054         if (rc) {
2055                 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
2056                 goto out;
2057         }
2058
2059         DP_VERBOSE(edev, NETIF_MSG_IFUP,
2060                    "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
2061                    start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
2062
2063         for_each_queue(i) {
2064                 struct qede_fastpath *fp = &edev->fp_array[i];
2065                 dma_addr_t p_phys_table;
2066                 u32 page_cnt;
2067
2068                 if (fp->type & QEDE_FASTPATH_RX) {
2069                         struct qed_rxq_start_ret_params ret_params;
2070                         struct qede_rx_queue *rxq = fp->rxq;
2071                         __le16 *val;
2072
2073                         memset(&ret_params, 0, sizeof(ret_params));
2074                         memset(&q_params, 0, sizeof(q_params));
2075                         q_params.queue_id = rxq->rxq_id;
2076                         q_params.vport_id = 0;
2077                         q_params.p_sb = fp->sb_info;
2078                         q_params.sb_idx = RX_PI;
2079
2080                         p_phys_table =
2081                             qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
2082                         page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);
2083
2084                         rc = edev->ops->q_rx_start(cdev, i, &q_params,
2085                                                    rxq->rx_buf_size,
2086                                                    rxq->rx_bd_ring.p_phys_addr,
2087                                                    p_phys_table,
2088                                                    page_cnt, &ret_params);
2089                         if (rc) {
2090                                 DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
2091                                        rc);
2092                                 goto out;
2093                         }
2094
2095                         /* Use the return parameters */
2096                         rxq->hw_rxq_prod_addr = ret_params.p_prod;
2097                         rxq->handle = ret_params.p_handle;
2098
2099                         val = &fp->sb_info->sb_virt->pi_array[RX_PI];
2100                         rxq->hw_cons_ptr = val;
2101
2102                         qede_update_rx_prod(edev, rxq);
2103                 }
2104
2105                 if (fp->type & QEDE_FASTPATH_XDP) {
2106                         rc = qede_start_txq(edev, fp, fp->xdp_tx, i, XDP_PI);
2107                         if (rc)
2108                                 goto out;
2109
2110                         fp->rxq->xdp_prog = bpf_prog_add(edev->xdp_prog, 1);
2111                         if (IS_ERR(fp->rxq->xdp_prog)) {
2112                                 rc = PTR_ERR(fp->rxq->xdp_prog);
2113                                 fp->rxq->xdp_prog = NULL;
2114                                 goto out;
2115                         }
2116                 }
2117
2118                 if (fp->type & QEDE_FASTPATH_TX) {
2119                         int cos;
2120
2121                         for_each_cos_in_txq(edev, cos) {
2122                                 rc = qede_start_txq(edev, fp, &fp->txq[cos], i,
2123                                                     TX_PI(cos));
2124                                 if (rc)
2125                                         goto out;
2126                         }
2127                 }
2128         }
2129
2130         /* Prepare and send the vport enable */
2131         vport_update_params->vport_id = start.vport_id;
2132         vport_update_params->update_vport_active_flg = 1;
2133         vport_update_params->vport_active_flg = 1;
2134
2135         if ((qed_info->b_inter_pf_switch || pci_num_vf(edev->pdev)) &&
2136             qed_info->tx_switching) {
2137                 vport_update_params->update_tx_switching_flg = 1;
2138                 vport_update_params->tx_switching_flg = 1;
2139         }
2140
2141         qede_fill_rss_params(edev, &vport_update_params->rss_params,
2142                              &vport_update_params->update_rss_flg);
2143
2144         rc = edev->ops->vport_update(cdev, vport_update_params);
2145         if (rc)
2146                 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
2147
2148 out:
2149         vfree(vport_update_params);
2150         return rc;
2151 }
2152
2153 enum qede_unload_mode {
2154         QEDE_UNLOAD_NORMAL,
2155         QEDE_UNLOAD_RECOVERY,
2156 };
2157
2158 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
2159                         bool is_locked)
2160 {
2161         struct qed_link_params link_params;
2162         int rc;
2163
2164         DP_INFO(edev, "Starting qede unload\n");
2165
2166         if (!is_locked)
2167                 __qede_lock(edev);
2168
2169         clear_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
2170
2171         if (mode != QEDE_UNLOAD_RECOVERY)
2172                 edev->state = QEDE_STATE_CLOSED;
2173
2174         qede_rdma_dev_event_close(edev);
2175
2176         /* Close OS Tx */
2177         netif_tx_disable(edev->ndev);
2178         netif_carrier_off(edev->ndev);
2179
2180         if (mode != QEDE_UNLOAD_RECOVERY) {
2181                 /* Reset the link */
2182                 memset(&link_params, 0, sizeof(link_params));
2183                 link_params.link_up = false;
2184                 edev->ops->common->set_link(edev->cdev, &link_params);
2185
2186                 rc = qede_stop_queues(edev);
2187                 if (rc) {
2188                         qede_sync_free_irqs(edev);
2189                         goto out;
2190                 }
2191
2192                 DP_INFO(edev, "Stopped Queues\n");
2193         }
2194
2195         qede_vlan_mark_nonconfigured(edev);
2196         edev->ops->fastpath_stop(edev->cdev);
2197
2198         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
2199                 qede_poll_for_freeing_arfs_filters(edev);
2200                 qede_free_arfs(edev);
2201         }
2202
2203         /* Release the interrupts */
2204         qede_sync_free_irqs(edev);
2205         edev->ops->common->set_fp_int(edev->cdev, 0);
2206
2207         qede_napi_disable_remove(edev);
2208
2209         if (mode == QEDE_UNLOAD_RECOVERY)
2210                 qede_empty_tx_queues(edev);
2211
2212         qede_free_mem_load(edev);
2213         qede_free_fp_array(edev);
2214
2215 out:
2216         if (!is_locked)
2217                 __qede_unlock(edev);
2218
2219         if (mode != QEDE_UNLOAD_RECOVERY)
2220                 DP_NOTICE(edev, "Link is down\n");
2221
2222         edev->ptp_skip_txts = 0;
2223
2224         DP_INFO(edev, "Ending qede unload\n");
2225 }
2226
2227 enum qede_load_mode {
2228         QEDE_LOAD_NORMAL,
2229         QEDE_LOAD_RELOAD,
2230         QEDE_LOAD_RECOVERY,
2231 };
2232
2233 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
2234                      bool is_locked)
2235 {
2236         struct qed_link_params link_params;
2237         u8 num_tc;
2238         int rc;
2239
2240         DP_INFO(edev, "Starting qede load\n");
2241
2242         if (!is_locked)
2243                 __qede_lock(edev);
2244
2245         rc = qede_set_num_queues(edev);
2246         if (rc)
2247                 goto out;
2248
2249         rc = qede_alloc_fp_array(edev);
2250         if (rc)
2251                 goto out;
2252
2253         qede_init_fp(edev);
2254
2255         rc = qede_alloc_mem_load(edev);
2256         if (rc)
2257                 goto err1;
2258         DP_INFO(edev, "Allocated %d Rx, %d Tx queues\n",
2259                 QEDE_RSS_COUNT(edev), QEDE_TSS_COUNT(edev));
2260
2261         rc = qede_set_real_num_queues(edev);
2262         if (rc)
2263                 goto err2;
2264
2265         if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
2266                 rc = qede_alloc_arfs(edev);
2267                 if (rc)
2268                         DP_NOTICE(edev, "aRFS memory allocation failed\n");
2269         }
2270
2271         qede_napi_add_enable(edev);
2272         DP_INFO(edev, "Napi added and enabled\n");
2273
2274         rc = qede_setup_irqs(edev);
2275         if (rc)
2276                 goto err3;
2277         DP_INFO(edev, "Setup IRQs succeeded\n");
2278
2279         rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
2280         if (rc)
2281                 goto err4;
2282         DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
2283
2284         num_tc = netdev_get_num_tc(edev->ndev);
2285         num_tc = num_tc ? num_tc : edev->dev_info.num_tc;
2286         qede_setup_tc(edev->ndev, num_tc);
2287
2288         /* Program un-configured VLANs */
2289         qede_configure_vlan_filters(edev);
2290
2291         set_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
2292
2293         /* Ask for link-up using current configuration */
2294         memset(&link_params, 0, sizeof(link_params));
2295         link_params.link_up = true;
2296         edev->ops->common->set_link(edev->cdev, &link_params);
2297
2298         edev->state = QEDE_STATE_OPEN;
2299
2300         DP_INFO(edev, "Ending successfully qede load\n");
2301
2302         goto out;
2303 err4:
2304         qede_sync_free_irqs(edev);
2305         memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
2306 err3:
2307         qede_napi_disable_remove(edev);
2308 err2:
2309         qede_free_mem_load(edev);
2310 err1:
2311         edev->ops->common->set_fp_int(edev->cdev, 0);
2312         qede_free_fp_array(edev);
2313         edev->num_queues = 0;
2314         edev->fp_num_tx = 0;
2315         edev->fp_num_rx = 0;
2316 out:
2317         if (!is_locked)
2318                 __qede_unlock(edev);
2319
2320         return rc;
2321 }
2322
2323 /* 'func' should be able to run between unload and reload assuming interface
2324  * is actually running, or afterwards in case it's currently DOWN.
2325  */
2326 void qede_reload(struct qede_dev *edev,
2327                  struct qede_reload_args *args, bool is_locked)
2328 {
2329         if (!is_locked)
2330                 __qede_lock(edev);
2331
2332         /* Since qede_lock is held, internal state wouldn't change even
2333          * if netdev state would start transitioning. Check whether current
2334          * internal configuration indicates device is up, then reload.
2335          */
2336         if (edev->state == QEDE_STATE_OPEN) {
2337                 qede_unload(edev, QEDE_UNLOAD_NORMAL, true);
2338                 if (args)
2339                         args->func(edev, args);
2340                 qede_load(edev, QEDE_LOAD_RELOAD, true);
2341
2342                 /* Since no one is going to do it for us, re-configure */
2343                 qede_config_rx_mode(edev->ndev);
2344         } else if (args) {
2345                 args->func(edev, args);
2346         }
2347
2348         if (!is_locked)
2349                 __qede_unlock(edev);
2350 }
2351
2352 /* called with rtnl_lock */
2353 static int qede_open(struct net_device *ndev)
2354 {
2355         struct qede_dev *edev = netdev_priv(ndev);
2356         int rc;
2357
2358         netif_carrier_off(ndev);
2359
2360         edev->ops->common->set_power_state(edev->cdev, PCI_D0);
2361
2362         rc = qede_load(edev, QEDE_LOAD_NORMAL, false);
2363         if (rc)
2364                 return rc;
2365
2366         udp_tunnel_get_rx_info(ndev);
2367
2368         edev->ops->common->update_drv_state(edev->cdev, true);
2369
2370         return 0;
2371 }
2372
2373 static int qede_close(struct net_device *ndev)
2374 {
2375         struct qede_dev *edev = netdev_priv(ndev);
2376
2377         qede_unload(edev, QEDE_UNLOAD_NORMAL, false);
2378
2379         edev->ops->common->update_drv_state(edev->cdev, false);
2380
2381         return 0;
2382 }
2383
2384 static void qede_link_update(void *dev, struct qed_link_output *link)
2385 {
2386         struct qede_dev *edev = dev;
2387
2388         if (!test_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags)) {
2389                 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not ready\n");
2390                 return;
2391         }
2392
2393         if (link->link_up) {
2394                 if (!netif_carrier_ok(edev->ndev)) {
2395                         DP_NOTICE(edev, "Link is up\n");
2396                         netif_tx_start_all_queues(edev->ndev);
2397                         netif_carrier_on(edev->ndev);
2398                         qede_rdma_dev_event_open(edev);
2399                 }
2400         } else {
2401                 if (netif_carrier_ok(edev->ndev)) {
2402                         DP_NOTICE(edev, "Link is down\n");
2403                         netif_tx_disable(edev->ndev);
2404                         netif_carrier_off(edev->ndev);
2405                         qede_rdma_dev_event_close(edev);
2406                 }
2407         }
2408 }
2409
2410 static void qede_schedule_recovery_handler(void *dev)
2411 {
2412         struct qede_dev *edev = dev;
2413
2414         if (edev->state == QEDE_STATE_RECOVERY) {
2415                 DP_NOTICE(edev,
2416                           "Avoid scheduling a recovery handling since already in recovery state\n");
2417                 return;
2418         }
2419
2420         set_bit(QEDE_SP_RECOVERY, &edev->sp_flags);
2421         schedule_delayed_work(&edev->sp_task, 0);
2422
2423         DP_INFO(edev, "Scheduled a recovery handler\n");
2424 }
2425
2426 static void qede_recovery_failed(struct qede_dev *edev)
2427 {
2428         netdev_err(edev->ndev, "Recovery handling has failed. Power cycle is needed.\n");
2429
2430         netif_device_detach(edev->ndev);
2431
2432         if (edev->cdev)
2433                 edev->ops->common->set_power_state(edev->cdev, PCI_D3hot);
2434 }
2435
2436 static void qede_recovery_handler(struct qede_dev *edev)
2437 {
2438         u32 curr_state = edev->state;
2439         int rc;
2440
2441         DP_NOTICE(edev, "Starting a recovery process\n");
2442
2443         /* No need to acquire first the qede_lock since is done by qede_sp_task
2444          * before calling this function.
2445          */
2446         edev->state = QEDE_STATE_RECOVERY;
2447
2448         edev->ops->common->recovery_prolog(edev->cdev);
2449
2450         if (curr_state == QEDE_STATE_OPEN)
2451                 qede_unload(edev, QEDE_UNLOAD_RECOVERY, true);
2452
2453         __qede_remove(edev->pdev, QEDE_REMOVE_RECOVERY);
2454
2455         rc = __qede_probe(edev->pdev, edev->dp_module, edev->dp_level,
2456                           IS_VF(edev), QEDE_PROBE_RECOVERY);
2457         if (rc) {
2458                 edev->cdev = NULL;
2459                 goto err;
2460         }
2461
2462         if (curr_state == QEDE_STATE_OPEN) {
2463                 rc = qede_load(edev, QEDE_LOAD_RECOVERY, true);
2464                 if (rc)
2465                         goto err;
2466
2467                 qede_config_rx_mode(edev->ndev);
2468                 udp_tunnel_get_rx_info(edev->ndev);
2469         }
2470
2471         edev->state = curr_state;
2472
2473         DP_NOTICE(edev, "Recovery handling is done\n");
2474
2475         return;
2476
2477 err:
2478         qede_recovery_failed(edev);
2479 }
2480
2481 static bool qede_is_txq_full(struct qede_dev *edev, struct qede_tx_queue *txq)
2482 {
2483         struct netdev_queue *netdev_txq;
2484
2485         netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id);
2486         if (netif_xmit_stopped(netdev_txq))
2487                 return true;
2488
2489         return false;
2490 }
2491
2492 static void qede_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
2493 {
2494         struct qede_dev *edev = dev;
2495         struct netdev_hw_addr *ha;
2496         int i;
2497
2498         if (edev->ndev->features & NETIF_F_IP_CSUM)
2499                 data->feat_flags |= QED_TLV_IP_CSUM;
2500         if (edev->ndev->features & NETIF_F_TSO)
2501                 data->feat_flags |= QED_TLV_LSO;
2502
2503         ether_addr_copy(data->mac[0], edev->ndev->dev_addr);
2504         memset(data->mac[1], 0, ETH_ALEN);
2505         memset(data->mac[2], 0, ETH_ALEN);
2506         /* Copy the first two UC macs */
2507         netif_addr_lock_bh(edev->ndev);
2508         i = 1;
2509         netdev_for_each_uc_addr(ha, edev->ndev) {
2510                 ether_addr_copy(data->mac[i++], ha->addr);
2511                 if (i == QED_TLV_MAC_COUNT)
2512                         break;
2513         }
2514
2515         netif_addr_unlock_bh(edev->ndev);
2516 }
2517
2518 static void qede_get_eth_tlv_data(void *dev, void *data)
2519 {
2520         struct qed_mfw_tlv_eth *etlv = data;
2521         struct qede_dev *edev = dev;
2522         struct qede_fastpath *fp;
2523         int i;
2524
2525         etlv->lso_maxoff_size = 0XFFFF;
2526         etlv->lso_maxoff_size_set = true;
2527         etlv->lso_minseg_size = (u16)ETH_TX_LSO_WINDOW_MIN_LEN;
2528         etlv->lso_minseg_size_set = true;
2529         etlv->prom_mode = !!(edev->ndev->flags & IFF_PROMISC);
2530         etlv->prom_mode_set = true;
2531         etlv->tx_descr_size = QEDE_TSS_COUNT(edev);
2532         etlv->tx_descr_size_set = true;
2533         etlv->rx_descr_size = QEDE_RSS_COUNT(edev);
2534         etlv->rx_descr_size_set = true;
2535         etlv->iov_offload = QED_MFW_TLV_IOV_OFFLOAD_VEB;
2536         etlv->iov_offload_set = true;
2537
2538         /* Fill information regarding queues; Should be done under the qede
2539          * lock to guarantee those don't change beneath our feet.
2540          */
2541         etlv->txqs_empty = true;
2542         etlv->rxqs_empty = true;
2543         etlv->num_txqs_full = 0;
2544         etlv->num_rxqs_full = 0;
2545
2546         __qede_lock(edev);
2547         for_each_queue(i) {
2548                 fp = &edev->fp_array[i];
2549                 if (fp->type & QEDE_FASTPATH_TX) {
2550                         struct qede_tx_queue *txq = QEDE_FP_TC0_TXQ(fp);
2551
2552                         if (txq->sw_tx_cons != txq->sw_tx_prod)
2553                                 etlv->txqs_empty = false;
2554                         if (qede_is_txq_full(edev, txq))
2555                                 etlv->num_txqs_full++;
2556                 }
2557                 if (fp->type & QEDE_FASTPATH_RX) {
2558                         if (qede_has_rx_work(fp->rxq))
2559                                 etlv->rxqs_empty = false;
2560
2561                         /* This one is a bit tricky; Firmware might stop
2562                          * placing packets if ring is not yet full.
2563                          * Give an approximation.
2564                          */
2565                         if (le16_to_cpu(*fp->rxq->hw_cons_ptr) -
2566                             qed_chain_get_cons_idx(&fp->rxq->rx_comp_ring) >
2567                             RX_RING_SIZE - 100)
2568                                 etlv->num_rxqs_full++;
2569                 }
2570         }
2571         __qede_unlock(edev);
2572
2573         etlv->txqs_empty_set = true;
2574         etlv->rxqs_empty_set = true;
2575         etlv->num_txqs_full_set = true;
2576         etlv->num_rxqs_full_set = true;
2577 }