drivers/net/ethernet/aquantia/atlantic/aq_nic.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /* Atlantic Network Driver
   3  *
   4  * Copyright (C) 2014-2019 aQuantia Corporation
   5  * Copyright (C) 2019-2020 Marvell International Ltd.
   6  */
   7
   8 /* File aq_nic.c: Definition of common code for NIC. */
   9
  10 #include "aq_nic.h"
  11 #include "aq_ring.h"
  12 #include "aq_vec.h"
  13 #include "aq_hw.h"
  14 #include "aq_pci_func.h"
  15 #include "aq_macsec.h"
  16 #include "aq_main.h"
  17 #include "aq_phy.h"
  18 #include "aq_ptp.h"
  19 #include "aq_filters.h"
  20
  21 #include <linux/moduleparam.h>
  22 #include <linux/netdevice.h>
  23 #include <linux/etherdevice.h>
  24 #include <linux/timer.h>
  25 #include <linux/cpu.h>
  26 #include <linux/ip.h>
  27 #include <linux/tcp.h>
  28 #include <net/ip.h>
  29 #include <net/pkt_cls.h>
  30
  31 static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
  32 module_param_named(aq_itr, aq_itr, uint, 0644);
  33 MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
  34
  35 static unsigned int aq_itr_tx;
  36 module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
  37 MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
  38
  39 static unsigned int aq_itr_rx;
  40 module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
  41 MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
  42
  43 static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
  44
  45 static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
  46 {
  47         static u8 rss_key[AQ_CFG_RSS_HASHKEY_SIZE] = {
  48                 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
  49                 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
  50                 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
  51                 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
  52                 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
  53         };
  54         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  55         struct aq_rss_parameters *rss_params;
  56         int i = 0;
  57
  58         rss_params = &cfg->aq_rss;
  59
  60         rss_params->hash_secret_key_size = sizeof(rss_key);
  61         memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
  62         rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
  63
  64         for (i = rss_params->indirection_table_size; i--;)
  65                 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
  66 }
  67
  68 /* Recalculate the number of vectors */
  69 static void aq_nic_cfg_update_num_vecs(struct aq_nic_s *self)
  70 {
  71         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  72
  73         cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
  74         cfg->vecs = min(cfg->vecs, num_online_cpus());
  75         if (self->irqvecs > AQ_HW_SERVICE_IRQS)
  76                 cfg->vecs = min(cfg->vecs, self->irqvecs - AQ_HW_SERVICE_IRQS);
  77         /* cfg->vecs should be power of 2 for RSS */
  78         cfg->vecs = rounddown_pow_of_two(cfg->vecs);
  79
  80         if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ANTIGUA)) {
  81                 if (cfg->tcs > 2)
  82                         cfg->vecs = min(cfg->vecs, 4U);
  83         }
  84
  85         if (cfg->vecs <= 4)
  86                 cfg->tc_mode = AQ_TC_MODE_8TCS;
  87         else
  88                 cfg->tc_mode = AQ_TC_MODE_4TCS;
  89
  90         /*rss rings */
  91         cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
  92         aq_nic_rss_init(self, cfg->num_rss_queues);
  93 }
  94
  95 /* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
  96 void aq_nic_cfg_start(struct aq_nic_s *self)
  97 {
  98         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  99         int i;
 100
 101         cfg->tcs = AQ_CFG_TCS_DEF;
 102
 103         cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
 104
 105         cfg->itr = aq_itr;
 106         cfg->tx_itr = aq_itr_tx;
 107         cfg->rx_itr = aq_itr_rx;
 108
 109         cfg->rxpageorder = AQ_CFG_RX_PAGEORDER;
 110         cfg->is_rss = AQ_CFG_IS_RSS_DEF;
 111         cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
 112         cfg->fc.req = AQ_CFG_FC_MODE;
 113         cfg->wol = AQ_CFG_WOL_MODES;
 114
 115         cfg->mtu = AQ_CFG_MTU_DEF;
 116         cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
 117         cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
 118
 119         cfg->is_lro = AQ_CFG_IS_LRO_DEF;
 120         cfg->is_ptp = true;
 121
 122         /*descriptors */
 123         cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
 124         cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
 125
 126         aq_nic_cfg_update_num_vecs(self);
 127
 128         cfg->irq_type = aq_pci_func_get_irq_type(self);
 129
 130         if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
 131             (cfg->aq_hw_caps->vecs == 1U) ||
 132             (cfg->vecs == 1U)) {
 133                 cfg->is_rss = 0U;
 134                 cfg->vecs = 1U;
 135         }
 136
 137         /* Check if we have enough vectors allocated for
 138          * link status IRQ. If no - we'll know link state from
 139          * slower service task.
 140          */
 141         if (AQ_HW_SERVICE_IRQS > 0 && cfg->vecs + 1 <= self->irqvecs)
 142                 cfg->link_irq_vec = cfg->vecs;
 143         else
 144                 cfg->link_irq_vec = 0;
 145
 146         cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
 147         cfg->features = cfg->aq_hw_caps->hw_features;
 148         cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX);
 149         cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX);
 150         cfg->is_vlan_force_promisc = true;
 151
 152         for (i = 0; i < sizeof(cfg->prio_tc_map); i++)
 153                 cfg->prio_tc_map[i] = cfg->tcs * i / 8;
 154 }
 155
 156 static int aq_nic_update_link_status(struct aq_nic_s *self)
 157 {
 158         int err = self->aq_fw_ops->update_link_status(self->aq_hw);
 159         u32 fc = 0;
 160
 161         if (err)
 162                 return err;
 163
 164         if (self->aq_fw_ops->get_flow_control)
 165                 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
 166         self->aq_nic_cfg.fc.cur = fc;
 167
 168         if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
 169                 netdev_info(self->ndev, "%s: link change old %d new %d\n",
 170                             AQ_CFG_DRV_NAME, self->link_status.mbps,
 171                             self->aq_hw->aq_link_status.mbps);
 172                 aq_nic_update_interrupt_moderation_settings(self);
 173
 174                 if (self->aq_ptp) {
 175                         aq_ptp_clock_init(self);
 176                         aq_ptp_tm_offset_set(self,
 177                                              self->aq_hw->aq_link_status.mbps);
 178                         aq_ptp_link_change(self);
 179                 }
 180
 181                 /* Driver has to update flow control settings on RX block
 182                  * on any link event.
 183                  * We should query FW whether it negotiated FC.
 184                  */
 185                 if (self->aq_hw_ops->hw_set_fc)
 186                         self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
 187         }
 188
 189         self->link_status = self->aq_hw->aq_link_status;
 190         if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
 191                 aq_utils_obj_set(&self->flags,
 192                                  AQ_NIC_FLAG_STARTED);
 193                 aq_utils_obj_clear(&self->flags,
 194                                    AQ_NIC_LINK_DOWN);
 195                 netif_carrier_on(self->ndev);
 196 #if IS_ENABLED(CONFIG_MACSEC)
 197                 aq_macsec_enable(self);
 198 #endif
 199                 if (self->aq_hw_ops->hw_tc_rate_limit_set)
 200                         self->aq_hw_ops->hw_tc_rate_limit_set(self->aq_hw);
 201
 202                 netif_tx_wake_all_queues(self->ndev);
 203         }
 204         if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
 205                 netif_carrier_off(self->ndev);
 206                 netif_tx_disable(self->ndev);
 207                 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
 208         }
 209
 210         return 0;
 211 }
 212
 213 static irqreturn_t aq_linkstate_threaded_isr(int irq, void *private)
 214 {
 215         struct aq_nic_s *self = private;
 216
 217         if (!self)
 218                 return IRQ_NONE;
 219
 220         aq_nic_update_link_status(self);
 221
 222         self->aq_hw_ops->hw_irq_enable(self->aq_hw,
 223                                        BIT(self->aq_nic_cfg.link_irq_vec));
 224
 225         return IRQ_HANDLED;
 226 }
 227
 228 static void aq_nic_service_task(struct work_struct *work)
 229 {
 230         struct aq_nic_s *self = container_of(work, struct aq_nic_s,
 231                                              service_task);
 232         int err;
 233
 234         aq_ptp_service_task(self);
 235
 236         if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
 237                 return;
 238
 239         err = aq_nic_update_link_status(self);
 240         if (err)
 241                 return;
 242
 243 #if IS_ENABLED(CONFIG_MACSEC)
 244         aq_macsec_work(self);
 245 #endif
 246
 247         mutex_lock(&self->fwreq_mutex);
 248         if (self->aq_fw_ops->update_stats)
 249                 self->aq_fw_ops->update_stats(self->aq_hw);
 250         mutex_unlock(&self->fwreq_mutex);
 251
 252         aq_nic_update_ndev_stats(self);
 253 }
 254
 255 static void aq_nic_service_timer_cb(struct timer_list *t)
 256 {
 257         struct aq_nic_s *self = from_timer(self, t, service_timer);
 258
 259         mod_timer(&self->service_timer,
 260                   jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
 261
 262         aq_ndev_schedule_work(&self->service_task);
 263 }
 264
 265 static void aq_nic_polling_timer_cb(struct timer_list *t)
 266 {
 267         struct aq_nic_s *self = from_timer(self, t, polling_timer);
 268         unsigned int i = 0U;
 269
 270         for (i = 0U; self->aq_vecs > i; ++i)
 271                 aq_vec_isr(i, (void *)self->aq_vec[i]);
 272
 273         mod_timer(&self->polling_timer, jiffies +
 274                   AQ_CFG_POLLING_TIMER_INTERVAL);
 275 }
 276
 277 static int aq_nic_hw_prepare(struct aq_nic_s *self)
 278 {
 279         int err = 0;
 280
 281         err = self->aq_hw_ops->hw_soft_reset(self->aq_hw);
 282         if (err)
 283                 goto exit;
 284
 285         err = self->aq_hw_ops->hw_prepare(self->aq_hw, &self->aq_fw_ops);
 286
 287 exit:
 288         return err;
 289 }
 290
 291 static bool aq_nic_is_valid_ether_addr(const u8 *addr)
 292 {
 293         /* Some engineering samples of Aquantia NICs are provisioned with a
 294          * partially populated MAC, which is still invalid.
 295          */
 296         return !(addr[0] == 0 && addr[1] == 0 && addr[2] == 0);
 297 }
 298
 299 int aq_nic_ndev_register(struct aq_nic_s *self)
 300 {
 301         u8 addr[ETH_ALEN];
 302         int err = 0;
 303
 304         if (!self->ndev) {
 305                 err = -EINVAL;
 306                 goto err_exit;
 307         }
 308
 309         err = aq_nic_hw_prepare(self);
 310         if (err)
 311                 goto err_exit;
 312
 313 #if IS_ENABLED(CONFIG_MACSEC)
 314         aq_macsec_init(self);
 315 #endif
 316
 317         if (platform_get_ethdev_address(&self->pdev->dev, self->ndev) != 0) {
 318                 // If DT has none or an invalid one, ask device for MAC address
 319                 mutex_lock(&self->fwreq_mutex);
 320                 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, addr);
 321                 mutex_unlock(&self->fwreq_mutex);
 322
 323                 if (err)
 324                         goto err_exit;
 325
 326                 if (is_valid_ether_addr(addr) &&
 327                     aq_nic_is_valid_ether_addr(addr)) {
 328                         eth_hw_addr_set(self->ndev, addr);
 329                 } else {
 330                         netdev_warn(self->ndev, "MAC is invalid, will use random.");
 331                         eth_hw_addr_random(self->ndev);
 332                 }
 333         }
 334
 335 #if defined(AQ_CFG_MAC_ADDR_PERMANENT)
 336         {
 337                 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
 338
 339                 eth_hw_addr_set(self->ndev, mac_addr_permanent);
 340         }
 341 #endif
 342
 343         for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
 344              self->aq_vecs++) {
 345                 self->aq_vec[self->aq_vecs] =
 346                     aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
 347                 if (!self->aq_vec[self->aq_vecs]) {
 348                         err = -ENOMEM;
 349                         goto err_exit;
 350                 }
 351         }
 352
 353         netif_carrier_off(self->ndev);
 354
 355         netif_tx_disable(self->ndev);
 356
 357         err = register_netdev(self->ndev);
 358         if (err)
 359                 goto err_exit;
 360
 361 err_exit:
 362 #if IS_ENABLED(CONFIG_MACSEC)
 363         if (err)
 364                 aq_macsec_free(self);
 365 #endif
 366         return err;
 367 }
 368
 369 void aq_nic_ndev_init(struct aq_nic_s *self)
 370 {
 371         const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
 372         struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
 373
 374         self->ndev->hw_features |= aq_hw_caps->hw_features;
 375         self->ndev->features = aq_hw_caps->hw_features;
 376         self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
 377                                      NETIF_F_RXHASH | NETIF_F_SG |
 378                                      NETIF_F_LRO | NETIF_F_TSO | NETIF_F_TSO6;
 379         self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4;
 380         self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
 381         self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
 382
 383         self->msg_enable = NETIF_MSG_DRV | NETIF_MSG_LINK;
 384         self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
 385         self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
 386
 387 }
 388
 389 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
 390                         struct aq_ring_s *ring)
 391 {
 392         self->aq_ring_tx[idx] = ring;
 393 }
 394
 395 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
 396 {
 397         return self->ndev;
 398 }
 399
 400 int aq_nic_init(struct aq_nic_s *self)
 401 {
 402         struct aq_vec_s *aq_vec = NULL;
 403         unsigned int i = 0U;
 404         int err = 0;
 405
 406         self->power_state = AQ_HW_POWER_STATE_D0;
 407         mutex_lock(&self->fwreq_mutex);
 408         err = self->aq_hw_ops->hw_reset(self->aq_hw);
 409         mutex_unlock(&self->fwreq_mutex);
 410         if (err < 0)
 411                 goto err_exit;
 412         /* Restore default settings */
 413         aq_nic_set_downshift(self, self->aq_nic_cfg.downshift_counter);
 414         aq_nic_set_media_detect(self, self->aq_nic_cfg.is_media_detect ?
 415                                 AQ_HW_MEDIA_DETECT_CNT : 0);
 416
 417         err = self->aq_hw_ops->hw_init(self->aq_hw,
 418                                        aq_nic_get_ndev(self)->dev_addr);
 419         if (err < 0)
 420                 goto err_exit;
 421
 422         if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ATLANTIC) &&
 423             self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) {
 424                 self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX;
 425                 err = aq_phy_init(self->aq_hw);
 426
 427                 /* Disable the PTP on NICs where it's known to cause datapath
 428                  * problems.
 429                  * Ideally this should have been done by PHY provisioning, but
 430                  * many units have been shipped with enabled PTP block already.
 431                  */
 432                 if (self->aq_nic_cfg.aq_hw_caps->quirks & AQ_NIC_QUIRK_BAD_PTP)
 433                         if (self->aq_hw->phy_id != HW_ATL_PHY_ID_MAX)
 434                                 aq_phy_disable_ptp(self->aq_hw);
 435         }
 436
 437         for (i = 0U; i < self->aq_vecs; i++) {
 438                 aq_vec = self->aq_vec[i];
 439                 err = aq_vec_ring_alloc(aq_vec, self, i,
 440                                         aq_nic_get_cfg(self));
 441                 if (err)
 442                         goto err_exit;
 443
 444                 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
 445         }
 446
 447         if (aq_nic_get_cfg(self)->is_ptp) {
 448                 err = aq_ptp_init(self, self->irqvecs - 1);
 449                 if (err < 0)
 450                         goto err_exit;
 451
 452                 err = aq_ptp_ring_alloc(self);
 453                 if (err < 0)
 454                         goto err_exit;
 455
 456                 err = aq_ptp_ring_init(self);
 457                 if (err < 0)
 458                         goto err_exit;
 459         }
 460
 461         netif_carrier_off(self->ndev);
 462
 463 err_exit:
 464         return err;
 465 }
 466
 467 int aq_nic_start(struct aq_nic_s *self)
 468 {
 469         struct aq_vec_s *aq_vec = NULL;
 470         struct aq_nic_cfg_s *cfg;
 471         unsigned int i = 0U;
 472         int err = 0;
 473
 474         cfg = aq_nic_get_cfg(self);
 475
 476         err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 477                                                      self->mc_list.ar,
 478                                                      self->mc_list.count);
 479         if (err < 0)
 480                 goto err_exit;
 481
 482         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
 483                                                     self->packet_filter);
 484         if (err < 0)
 485                 goto err_exit;
 486
 487         for (i = 0U; self->aq_vecs > i; ++i) {
 488                 aq_vec = self->aq_vec[i];
 489                 err = aq_vec_start(aq_vec);
 490                 if (err < 0)
 491                         goto err_exit;
 492         }
 493
 494         err = aq_ptp_ring_start(self);
 495         if (err < 0)
 496                 goto err_exit;
 497
 498         aq_nic_set_loopback(self);
 499
 500         err = self->aq_hw_ops->hw_start(self->aq_hw);
 501         if (err < 0)
 502                 goto err_exit;
 503
 504         err = aq_nic_update_interrupt_moderation_settings(self);
 505         if (err)
 506                 goto err_exit;
 507
 508         INIT_WORK(&self->service_task, aq_nic_service_task);
 509
 510         timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
 511         aq_nic_service_timer_cb(&self->service_timer);
 512
 513         if (cfg->is_polling) {
 514                 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
 515                 mod_timer(&self->polling_timer, jiffies +
 516                           AQ_CFG_POLLING_TIMER_INTERVAL);
 517         } else {
 518                 for (i = 0U; self->aq_vecs > i; ++i) {
 519                         aq_vec = self->aq_vec[i];
 520                         err = aq_pci_func_alloc_irq(self, i, self->ndev->name,
 521                                                     aq_vec_isr, aq_vec,
 522                                                     aq_vec_get_affinity_mask(aq_vec));
 523                         if (err < 0)
 524                                 goto err_exit;
 525                 }
 526
 527                 err = aq_ptp_irq_alloc(self);
 528                 if (err < 0)
 529                         goto err_exit;
 530
 531                 if (cfg->link_irq_vec) {
 532                         int irqvec = pci_irq_vector(self->pdev,
 533                                                     cfg->link_irq_vec);
 534                         err = request_threaded_irq(irqvec, NULL,
 535                                                    aq_linkstate_threaded_isr,
 536                                                    IRQF_SHARED | IRQF_ONESHOT,
 537                                                    self->ndev->name, self);
 538                         if (err < 0)
 539                                 goto err_exit;
 540                         self->msix_entry_mask |= (1 << cfg->link_irq_vec);
 541                 }
 542
 543                 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
 544                                                      AQ_CFG_IRQ_MASK);
 545                 if (err < 0)
 546                         goto err_exit;
 547         }
 548
 549         err = netif_set_real_num_tx_queues(self->ndev,
 550                                            self->aq_vecs * cfg->tcs);
 551         if (err < 0)
 552                 goto err_exit;
 553
 554         err = netif_set_real_num_rx_queues(self->ndev,
 555                                            self->aq_vecs * cfg->tcs);
 556         if (err < 0)
 557                 goto err_exit;
 558
 559         for (i = 0; i < cfg->tcs; i++) {
 560                 u16 offset = self->aq_vecs * i;
 561
 562                 netdev_set_tc_queue(self->ndev, i, self->aq_vecs, offset);
 563         }
 564         netif_tx_start_all_queues(self->ndev);
 565
 566 err_exit:
 567         return err;
 568 }
 569
 570 static unsigned int aq_nic_map_xdp(struct aq_nic_s *self,
 571                                    struct xdp_frame *xdpf,
 572                                    struct aq_ring_s *ring)
 573 {
 574         struct device *dev = aq_nic_get_dev(self);
 575         struct aq_ring_buff_s *first = NULL;
 576         unsigned int dx = ring->sw_tail;
 577         struct aq_ring_buff_s *dx_buff;
 578         struct skb_shared_info *sinfo;
 579         unsigned int frag_count = 0U;
 580         unsigned int nr_frags = 0U;
 581         unsigned int ret = 0U;
 582         u16 total_len;
 583
 584         dx_buff = &ring->buff_ring[dx];
 585         dx_buff->flags = 0U;
 586
 587         sinfo = xdp_get_shared_info_from_frame(xdpf);
 588         total_len = xdpf->len;
 589         dx_buff->len = total_len;
 590         if (xdp_frame_has_frags(xdpf)) {
 591                 nr_frags = sinfo->nr_frags;
 592                 total_len += sinfo->xdp_frags_size;
 593         }
 594         dx_buff->pa = dma_map_single(dev, xdpf->data, dx_buff->len,
 595                                      DMA_TO_DEVICE);
 596
 597         if (unlikely(dma_mapping_error(dev, dx_buff->pa)))
 598                 goto exit;
 599
 600         first = dx_buff;
 601         dx_buff->len_pkt = total_len;
 602         dx_buff->is_sop = 1U;
 603         dx_buff->is_mapped = 1U;
 604         ++ret;
 605
 606         for (; nr_frags--; ++frag_count) {
 607                 skb_frag_t *frag = &sinfo->frags[frag_count];
 608                 unsigned int frag_len = skb_frag_size(frag);
 609                 unsigned int buff_offset = 0U;
 610                 unsigned int buff_size = 0U;
 611                 dma_addr_t frag_pa;
 612
 613                 while (frag_len) {
 614                         if (frag_len > AQ_CFG_TX_FRAME_MAX)
 615                                 buff_size = AQ_CFG_TX_FRAME_MAX;
 616                         else
 617                                 buff_size = frag_len;
 618
 619                         frag_pa = skb_frag_dma_map(dev, frag, buff_offset,
 620                                                    buff_size, DMA_TO_DEVICE);
 621
 622                         if (unlikely(dma_mapping_error(dev, frag_pa)))
 623                                 goto mapping_error;
 624
 625                         dx = aq_ring_next_dx(ring, dx);
 626                         dx_buff = &ring->buff_ring[dx];
 627
 628                         dx_buff->flags = 0U;
 629                         dx_buff->len = buff_size;
 630                         dx_buff->pa = frag_pa;
 631                         dx_buff->is_mapped = 1U;
 632                         dx_buff->eop_index = 0xffffU;
 633
 634                         frag_len -= buff_size;
 635                         buff_offset += buff_size;
 636
 637                         ++ret;
 638                 }
 639         }
 640
 641         first->eop_index = dx;
 642         dx_buff->is_eop = 1U;
 643         dx_buff->skb = NULL;
 644         dx_buff->xdpf = xdpf;
 645         goto exit;
 646
 647 mapping_error:
 648         for (dx = ring->sw_tail;
 649              ret > 0;
 650              --ret, dx = aq_ring_next_dx(ring, dx)) {
 651                 dx_buff = &ring->buff_ring[dx];
 652
 653                 if (!dx_buff->pa)
 654                         continue;
 655                 if (unlikely(dx_buff->is_sop))
 656                         dma_unmap_single(dev, dx_buff->pa, dx_buff->len,
 657                                          DMA_TO_DEVICE);
 658                 else
 659                         dma_unmap_page(dev, dx_buff->pa, dx_buff->len,
 660                                        DMA_TO_DEVICE);
 661         }
 662
 663 exit:
 664         return ret;
 665 }
 666
 667 unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
 668                             struct aq_ring_s *ring)
 669 {
 670         unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
 671         struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
 672         struct device *dev = aq_nic_get_dev(self);
 673         struct aq_ring_buff_s *first = NULL;
 674         u8 ipver = ip_hdr(skb)->version;
 675         struct aq_ring_buff_s *dx_buff;
 676         bool need_context_tag = false;
 677         unsigned int frag_count = 0U;
 678         unsigned int ret = 0U;
 679         unsigned int dx;
 680         u8 l4proto = 0;
 681
 682         if (ipver == 4)
 683                 l4proto = ip_hdr(skb)->protocol;
 684         else if (ipver == 6)
 685                 l4proto = ipv6_hdr(skb)->nexthdr;
 686
 687         dx = ring->sw_tail;
 688         dx_buff = &ring->buff_ring[dx];
 689         dx_buff->flags = 0U;
 690
 691         if (unlikely(skb_is_gso(skb))) {
 692                 dx_buff->mss = skb_shinfo(skb)->gso_size;
 693                 if (l4proto == IPPROTO_TCP) {
 694                         dx_buff->is_gso_tcp = 1U;
 695                         dx_buff->len_l4 = tcp_hdrlen(skb);
 696                 } else if (l4proto == IPPROTO_UDP) {
 697                         dx_buff->is_gso_udp = 1U;
 698                         dx_buff->len_l4 = sizeof(struct udphdr);
 699                         /* UDP GSO Hardware does not replace packet length. */
 700                         udp_hdr(skb)->len = htons(dx_buff->mss +
 701                                                   dx_buff->len_l4);
 702                 } else {
 703                         WARN_ONCE(true, "Bad GSO mode");
 704                         goto exit;
 705                 }
 706                 dx_buff->len_pkt = skb->len;
 707                 dx_buff->len_l2 = ETH_HLEN;
 708                 dx_buff->len_l3 = skb_network_header_len(skb);
 709                 dx_buff->eop_index = 0xffffU;
 710                 dx_buff->is_ipv6 = (ipver == 6);
 711                 need_context_tag = true;
 712         }
 713
 714         if (cfg->is_vlan_tx_insert && skb_vlan_tag_present(skb)) {
 715                 dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb);
 716                 dx_buff->len_pkt = skb->len;
 717                 dx_buff->is_vlan = 1U;
 718                 need_context_tag = true;
 719         }
 720
 721         if (need_context_tag) {
 722                 dx = aq_ring_next_dx(ring, dx);
 723                 dx_buff = &ring->buff_ring[dx];
 724                 dx_buff->flags = 0U;
 725                 ++ret;
 726         }
 727
 728         dx_buff->len = skb_headlen(skb);
 729         dx_buff->pa = dma_map_single(dev,
 730                                      skb->data,
 731                                      dx_buff->len,
 732                                      DMA_TO_DEVICE);
 733
 734         if (unlikely(dma_mapping_error(dev, dx_buff->pa))) {
 735                 ret = 0;
 736                 goto exit;
 737         }
 738
 739         first = dx_buff;
 740         dx_buff->len_pkt = skb->len;
 741         dx_buff->is_sop = 1U;
 742         dx_buff->is_mapped = 1U;
 743         ++ret;
 744
 745         if (skb->ip_summed == CHECKSUM_PARTIAL) {
 746                 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol);
 747                 dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP);
 748                 dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP);
 749         }
 750
 751         for (; nr_frags--; ++frag_count) {
 752                 unsigned int frag_len = 0U;
 753                 unsigned int buff_offset = 0U;
 754                 unsigned int buff_size = 0U;
 755                 dma_addr_t frag_pa;
 756                 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
 757
 758                 frag_len = skb_frag_size(frag);
 759
 760                 while (frag_len) {
 761                         if (frag_len > AQ_CFG_TX_FRAME_MAX)
 762                                 buff_size = AQ_CFG_TX_FRAME_MAX;
 763                         else
 764                                 buff_size = frag_len;
 765
 766                         frag_pa = skb_frag_dma_map(dev,
 767                                                    frag,
 768                                                    buff_offset,
 769                                                    buff_size,
 770                                                    DMA_TO_DEVICE);
 771
 772                         if (unlikely(dma_mapping_error(dev,
 773                                                        frag_pa)))
 774                                 goto mapping_error;
 775
 776                         dx = aq_ring_next_dx(ring, dx);
 777                         dx_buff = &ring->buff_ring[dx];
 778
 779                         dx_buff->flags = 0U;
 780                         dx_buff->len = buff_size;
 781                         dx_buff->pa = frag_pa;
 782                         dx_buff->is_mapped = 1U;
 783                         dx_buff->eop_index = 0xffffU;
 784
 785                         frag_len -= buff_size;
 786                         buff_offset += buff_size;
 787
 788                         ++ret;
 789                 }
 790         }
 791
 792         first->eop_index = dx;
 793         dx_buff->is_eop = 1U;
 794         dx_buff->skb = skb;
 795         dx_buff->xdpf = NULL;
 796         goto exit;
 797
 798 mapping_error:
 799         for (dx = ring->sw_tail;
 800              ret > 0;
 801              --ret, dx = aq_ring_next_dx(ring, dx)) {
 802                 dx_buff = &ring->buff_ring[dx];
 803
 804                 if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) &&
 805                     !dx_buff->is_vlan && dx_buff->pa) {
 806                         if (unlikely(dx_buff->is_sop)) {
 807                                 dma_unmap_single(dev,
 808                                                  dx_buff->pa,
 809                                                  dx_buff->len,
 810                                                  DMA_TO_DEVICE);
 811                         } else {
 812                                 dma_unmap_page(dev,
 813                                                dx_buff->pa,
 814                                                dx_buff->len,
 815                                                DMA_TO_DEVICE);
 816                         }
 817                 }
 818         }
 819
 820 exit:
 821         return ret;
 822 }
 823
 824 int aq_nic_xmit_xdpf(struct aq_nic_s *aq_nic, struct aq_ring_s *tx_ring,
 825                      struct xdp_frame *xdpf)
 826 {
 827         u16 queue_index = AQ_NIC_RING2QMAP(aq_nic, tx_ring->idx);
 828         struct net_device *ndev = aq_nic_get_ndev(aq_nic);
 829         struct skb_shared_info *sinfo;
 830         int cpu = smp_processor_id();
 831         int err = NETDEV_TX_BUSY;
 832         struct netdev_queue *nq;
 833         unsigned int frags = 1;
 834
 835         if (xdp_frame_has_frags(xdpf)) {
 836                 sinfo = xdp_get_shared_info_from_frame(xdpf);
 837                 frags += sinfo->nr_frags;
 838         }
 839
 840         if (frags > AQ_CFG_SKB_FRAGS_MAX)
 841                 return err;
 842
 843         nq = netdev_get_tx_queue(ndev, tx_ring->idx);
 844         __netif_tx_lock(nq, cpu);
 845
 846         aq_ring_update_queue_state(tx_ring);
 847
 848         /* Above status update may stop the queue. Check this. */
 849         if (__netif_subqueue_stopped(aq_nic_get_ndev(aq_nic), queue_index))
 850                 goto out;
 851
 852         frags = aq_nic_map_xdp(aq_nic, xdpf, tx_ring);
 853         if (likely(frags))
 854                 err = aq_nic->aq_hw_ops->hw_ring_tx_xmit(aq_nic->aq_hw, tx_ring,
 855                                                          frags);
 856 out:
 857         __netif_tx_unlock(nq);
 858
 859         return err;
 860 }
 861
 862 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
 863 {
 864         struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
 865         unsigned int vec = skb->queue_mapping % cfg->vecs;
 866         unsigned int tc = skb->queue_mapping / cfg->vecs;
 867         struct aq_ring_s *ring = NULL;
 868         unsigned int frags = 0U;
 869         int err = NETDEV_TX_OK;
 870
 871         frags = skb_shinfo(skb)->nr_frags + 1;
 872
 873         ring = self->aq_ring_tx[AQ_NIC_CFG_TCVEC2RING(cfg, tc, vec)];
 874
 875         if (frags > AQ_CFG_SKB_FRAGS_MAX) {
 876                 dev_kfree_skb_any(skb);
 877                 goto err_exit;
 878         }
 879
 880         aq_ring_update_queue_state(ring);
 881
 882         if (cfg->priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) {
 883                 err = NETDEV_TX_BUSY;
 884                 goto err_exit;
 885         }
 886
 887         /* Above status update may stop the queue. Check this. */
 888         if (__netif_subqueue_stopped(self->ndev,
 889                                      AQ_NIC_RING2QMAP(self, ring->idx))) {
 890                 err = NETDEV_TX_BUSY;
 891                 goto err_exit;
 892         }
 893
 894         frags = aq_nic_map_skb(self, skb, ring);
 895
 896         if (likely(frags)) {
 897                 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
 898                                                        ring, frags);
 899         } else {
 900                 err = NETDEV_TX_BUSY;
 901         }
 902
 903 err_exit:
 904         return err;
 905 }
 906
 907 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
 908 {
 909         return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
 910 }
 911
 912 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
 913 {
 914         int err = 0;
 915
 916         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
 917         if (err < 0)
 918                 goto err_exit;
 919
 920         self->packet_filter = flags;
 921
 922 err_exit:
 923         return err;
 924 }
 925
 926 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
 927 {
 928         const struct aq_hw_ops *hw_ops = self->aq_hw_ops;
 929         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
 930         unsigned int packet_filter = ndev->flags;
 931         struct netdev_hw_addr *ha = NULL;
 932         unsigned int i = 0U;
 933         int err = 0;
 934
 935         self->mc_list.count = 0;
 936         if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
 937                 packet_filter |= IFF_PROMISC;
 938         } else {
 939                 netdev_for_each_uc_addr(ha, ndev) {
 940                         ether_addr_copy(self->mc_list.ar[i++], ha->addr);
 941                 }
 942         }
 943
 944         cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST);
 945         if (cfg->is_mc_list_enabled) {
 946                 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
 947                         packet_filter |= IFF_ALLMULTI;
 948                 } else {
 949                         netdev_for_each_mc_addr(ha, ndev) {
 950                                 ether_addr_copy(self->mc_list.ar[i++],
 951                                                 ha->addr);
 952                         }
 953                 }
 954         }
 955
 956         if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
 957                 self->mc_list.count = i;
 958                 err = hw_ops->hw_multicast_list_set(self->aq_hw,
 959                                                     self->mc_list.ar,
 960                                                     self->mc_list.count);
 961                 if (err < 0)
 962                         return err;
 963         }
 964
 965         return aq_nic_set_packet_filter(self, packet_filter);
 966 }
 967
 968 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
 969 {
 970         self->aq_nic_cfg.mtu = new_mtu;
 971
 972         return 0;
 973 }
 974
 975 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
 976 {
 977         return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
 978 }
 979
 980 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
 981 {
 982         return self->link_status.mbps;
 983 }
 984
 985 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
 986 {
 987         u32 *regs_buff = p;
 988         int err = 0;
 989
 990         if (unlikely(!self->aq_hw_ops->hw_get_regs))
 991                 return -EOPNOTSUPP;
 992
 993         regs->version = 1;
 994
 995         err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
 996                                            self->aq_nic_cfg.aq_hw_caps,
 997                                            regs_buff);
 998         if (err < 0)
 999                 goto err_exit;
1000
1001 err_exit:
1002         return err;
1003 }
1004
1005 int aq_nic_get_regs_count(struct aq_nic_s *self)
1006 {
1007         if (unlikely(!self->aq_hw_ops->hw_get_regs))
1008                 return 0;
1009
1010         return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
1011 }
1012
1013 u64 *aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
1014 {
1015         struct aq_stats_s *stats;
1016         unsigned int count = 0U;
1017         unsigned int i = 0U;
1018         unsigned int tc;
1019
1020         if (self->aq_fw_ops->update_stats) {
1021                 mutex_lock(&self->fwreq_mutex);
1022                 self->aq_fw_ops->update_stats(self->aq_hw);
1023                 mutex_unlock(&self->fwreq_mutex);
1024         }
1025         stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
1026
1027         if (!stats)
1028                 goto err_exit;
1029
1030         data[i] = stats->uprc + stats->mprc + stats->bprc;
1031         data[++i] = stats->uprc;
1032         data[++i] = stats->mprc;
1033         data[++i] = stats->bprc;
1034         data[++i] = stats->erpt;
1035         data[++i] = stats->uptc + stats->mptc + stats->bptc;
1036         data[++i] = stats->uptc;
1037         data[++i] = stats->mptc;
1038         data[++i] = stats->bptc;
1039         data[++i] = stats->ubrc;
1040         data[++i] = stats->ubtc;
1041         data[++i] = stats->mbrc;
1042         data[++i] = stats->mbtc;
1043         data[++i] = stats->bbrc;
1044         data[++i] = stats->bbtc;
1045         if (stats->brc)
1046                 data[++i] = stats->brc;
1047         else
1048                 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
1049         if (stats->btc)
1050                 data[++i] = stats->btc;
1051         else
1052                 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
1053         data[++i] = stats->dma_pkt_rc;
1054         data[++i] = stats->dma_pkt_tc;
1055         data[++i] = stats->dma_oct_rc;
1056         data[++i] = stats->dma_oct_tc;
1057         data[++i] = stats->dpc;
1058
1059         i++;
1060
1061         data += i;
1062
1063         for (tc = 0U; tc < self->aq_nic_cfg.tcs; tc++) {
1064                 for (i = 0U; self->aq_vecs > i; ++i) {
1065                         if (!self->aq_vec[i])
1066                                 break;
1067                         data += count;
1068                         count = aq_vec_get_sw_stats(self->aq_vec[i], tc, data);
1069                 }
1070         }
1071
1072         data += count;
1073
1074 err_exit:
1075         return data;
1076 }
1077
1078 static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
1079 {
1080         struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
1081         struct net_device *ndev = self->ndev;
1082
1083         ndev->stats.rx_packets = stats->dma_pkt_rc;
1084         ndev->stats.rx_bytes = stats->dma_oct_rc;
1085         ndev->stats.rx_errors = stats->erpr;
1086         ndev->stats.rx_dropped = stats->dpc;
1087         ndev->stats.tx_packets = stats->dma_pkt_tc;
1088         ndev->stats.tx_bytes = stats->dma_oct_tc;
1089         ndev->stats.tx_errors = stats->erpt;
1090         ndev->stats.multicast = stats->mprc;
1091 }
1092
1093 void aq_nic_get_link_ksettings(struct aq_nic_s *self,
1094                                struct ethtool_link_ksettings *cmd)
1095 {
1096         u32 lp_link_speed_msk;
1097
1098         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
1099                 cmd->base.port = PORT_FIBRE;
1100         else
1101                 cmd->base.port = PORT_TP;
1102
1103         cmd->base.duplex = DUPLEX_UNKNOWN;
1104         if (self->link_status.mbps)
1105                 cmd->base.duplex = self->link_status.full_duplex ?
1106                                    DUPLEX_FULL : DUPLEX_HALF;
1107         cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
1108
1109         ethtool_link_ksettings_zero_link_mode(cmd, supported);
1110
1111         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
1112                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1113                                                      10000baseT_Full);
1114
1115         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
1116                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1117                                                      5000baseT_Full);
1118
1119         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2G5)
1120                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1121                                                      2500baseT_Full);
1122
1123         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
1124                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1125                                                      1000baseT_Full);
1126
1127         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G_HALF)
1128                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1129                                                      1000baseT_Half);
1130
1131         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
1132                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1133                                                      100baseT_Full);
1134
1135         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M_HALF)
1136                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1137                                                      100baseT_Half);
1138
1139         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M)
1140                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1141                                                      10baseT_Full);
1142
1143         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M_HALF)
1144                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1145                                                      10baseT_Half);
1146
1147         if (self->aq_nic_cfg.aq_hw_caps->flow_control) {
1148                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1149                                                      Pause);
1150                 ethtool_link_ksettings_add_link_mode(cmd, supported,
1151                                                      Asym_Pause);
1152         }
1153
1154         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
1155
1156         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
1157                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
1158         else
1159                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
1160
1161         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
1162
1163         if (self->aq_nic_cfg.is_autoneg)
1164                 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
1165
1166         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G)
1167                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1168                                                      10000baseT_Full);
1169
1170         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G)
1171                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1172                                                      5000baseT_Full);
1173
1174         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2G5)
1175                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1176                                                      2500baseT_Full);
1177
1178         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G)
1179                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1180                                                      1000baseT_Full);
1181
1182         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G_HALF)
1183                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1184                                                      1000baseT_Half);
1185
1186         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M)
1187                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1188                                                      100baseT_Full);
1189
1190         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M_HALF)
1191                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1192                                                      100baseT_Half);
1193
1194         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M)
1195                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1196                                                      10baseT_Full);
1197
1198         if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M_HALF)
1199                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1200                                                      10baseT_Half);
1201
1202         if (self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX)
1203                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1204                                                      Pause);
1205
1206         /* Asym is when either RX or TX, but not both */
1207         if (!!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_TX) ^
1208             !!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX))
1209                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1210                                                      Asym_Pause);
1211
1212         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
1213                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
1214         else
1215                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
1216
1217         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
1218         lp_link_speed_msk = self->aq_hw->aq_link_status.lp_link_speed_msk;
1219
1220         if (lp_link_speed_msk & AQ_NIC_RATE_10G)
1221                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1222                                                      10000baseT_Full);
1223
1224         if (lp_link_speed_msk & AQ_NIC_RATE_5G)
1225                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1226                                                      5000baseT_Full);
1227
1228         if (lp_link_speed_msk & AQ_NIC_RATE_2G5)
1229                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1230                                                      2500baseT_Full);
1231
1232         if (lp_link_speed_msk & AQ_NIC_RATE_1G)
1233                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1234                                                      1000baseT_Full);
1235
1236         if (lp_link_speed_msk & AQ_NIC_RATE_1G_HALF)
1237                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1238                                                      1000baseT_Half);
1239
1240         if (lp_link_speed_msk & AQ_NIC_RATE_100M)
1241                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1242                                                      100baseT_Full);
1243
1244         if (lp_link_speed_msk & AQ_NIC_RATE_100M_HALF)
1245                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1246                                                      100baseT_Half);
1247
1248         if (lp_link_speed_msk & AQ_NIC_RATE_10M)
1249                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1250                                                      10baseT_Full);
1251
1252         if (lp_link_speed_msk & AQ_NIC_RATE_10M_HALF)
1253                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1254                                                      10baseT_Half);
1255
1256         if (self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX)
1257                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1258                                                      Pause);
1259         if (!!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_TX) ^
1260             !!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX))
1261                 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1262                                                      Asym_Pause);
1263 }
1264
1265 int aq_nic_set_link_ksettings(struct aq_nic_s *self,
1266                               const struct ethtool_link_ksettings *cmd)
1267 {
1268         int fduplex = (cmd->base.duplex == DUPLEX_FULL);
1269         u32 speed = cmd->base.speed;
1270         u32 rate = 0U;
1271         int err = 0;
1272
1273         if (!fduplex && speed > SPEED_1000) {
1274                 err = -EINVAL;
1275                 goto err_exit;
1276         }
1277
1278         if (cmd->base.autoneg == AUTONEG_ENABLE) {
1279                 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
1280                 self->aq_nic_cfg.is_autoneg = true;
1281         } else {
1282                 switch (speed) {
1283                 case SPEED_10:
1284                         rate = fduplex ? AQ_NIC_RATE_10M : AQ_NIC_RATE_10M_HALF;
1285                         break;
1286
1287                 case SPEED_100:
1288                         rate = fduplex ? AQ_NIC_RATE_100M
1289                                        : AQ_NIC_RATE_100M_HALF;
1290                         break;
1291
1292                 case SPEED_1000:
1293                         rate = fduplex ? AQ_NIC_RATE_1G : AQ_NIC_RATE_1G_HALF;
1294                         break;
1295
1296                 case SPEED_2500:
1297                         rate = AQ_NIC_RATE_2G5;
1298                         break;
1299
1300                 case SPEED_5000:
1301                         rate = AQ_NIC_RATE_5G;
1302                         break;
1303
1304                 case SPEED_10000:
1305                         rate = AQ_NIC_RATE_10G;
1306                         break;
1307
1308                 default:
1309                         err = -1;
1310                         goto err_exit;
1311                 }
1312                 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
1313                         err = -1;
1314                         goto err_exit;
1315                 }
1316
1317                 self->aq_nic_cfg.is_autoneg = false;
1318         }
1319
1320         mutex_lock(&self->fwreq_mutex);
1321         err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
1322         mutex_unlock(&self->fwreq_mutex);
1323         if (err < 0)
1324                 goto err_exit;
1325
1326         self->aq_nic_cfg.link_speed_msk = rate;
1327
1328 err_exit:
1329         return err;
1330 }
1331
1332 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
1333 {
1334         return &self->aq_nic_cfg;
1335 }
1336
1337 u32 aq_nic_get_fw_version(struct aq_nic_s *self)
1338 {
1339         return self->aq_hw_ops->hw_get_fw_version(self->aq_hw);
1340 }
1341
1342 int aq_nic_set_loopback(struct aq_nic_s *self)
1343 {
1344         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1345
1346         if (!self->aq_hw_ops->hw_set_loopback ||
1347             !self->aq_fw_ops->set_phyloopback)
1348                 return -EOPNOTSUPP;
1349
1350         mutex_lock(&self->fwreq_mutex);
1351         self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1352                                          AQ_HW_LOOPBACK_DMA_SYS,
1353                                          !!(cfg->priv_flags &
1354                                             BIT(AQ_HW_LOOPBACK_DMA_SYS)));
1355
1356         self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1357                                          AQ_HW_LOOPBACK_PKT_SYS,
1358                                          !!(cfg->priv_flags &
1359                                             BIT(AQ_HW_LOOPBACK_PKT_SYS)));
1360
1361         self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1362                                          AQ_HW_LOOPBACK_DMA_NET,
1363                                          !!(cfg->priv_flags &
1364                                             BIT(AQ_HW_LOOPBACK_DMA_NET)));
1365
1366         self->aq_fw_ops->set_phyloopback(self->aq_hw,
1367                                          AQ_HW_LOOPBACK_PHYINT_SYS,
1368                                          !!(cfg->priv_flags &
1369                                             BIT(AQ_HW_LOOPBACK_PHYINT_SYS)));
1370
1371         self->aq_fw_ops->set_phyloopback(self->aq_hw,
1372                                          AQ_HW_LOOPBACK_PHYEXT_SYS,
1373                                          !!(cfg->priv_flags &
1374                                             BIT(AQ_HW_LOOPBACK_PHYEXT_SYS)));
1375         mutex_unlock(&self->fwreq_mutex);
1376
1377         return 0;
1378 }
1379
1380 int aq_nic_stop(struct aq_nic_s *self)
1381 {
1382         unsigned int i = 0U;
1383
1384         netif_tx_disable(self->ndev);
1385         netif_carrier_off(self->ndev);
1386
1387         del_timer_sync(&self->service_timer);
1388         cancel_work_sync(&self->service_task);
1389
1390         self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
1391
1392         if (self->aq_nic_cfg.is_polling)
1393                 del_timer_sync(&self->polling_timer);
1394         else
1395                 aq_pci_func_free_irqs(self);
1396
1397         aq_ptp_irq_free(self);
1398
1399         for (i = 0U; self->aq_vecs > i; ++i)
1400                 aq_vec_stop(self->aq_vec[i]);
1401
1402         aq_ptp_ring_stop(self);
1403
1404         return self->aq_hw_ops->hw_stop(self->aq_hw);
1405 }
1406
1407 void aq_nic_set_power(struct aq_nic_s *self)
1408 {
1409         if (self->power_state != AQ_HW_POWER_STATE_D0 ||
1410             self->aq_hw->aq_nic_cfg->wol)
1411                 if (likely(self->aq_fw_ops->set_power)) {
1412                         mutex_lock(&self->fwreq_mutex);
1413                         self->aq_fw_ops->set_power(self->aq_hw,
1414                                                    self->power_state,
1415                                                    self->ndev->dev_addr);
1416                         mutex_unlock(&self->fwreq_mutex);
1417                 }
1418 }
1419
1420 void aq_nic_deinit(struct aq_nic_s *self, bool link_down)
1421 {
1422         struct aq_vec_s *aq_vec = NULL;
1423         unsigned int i = 0U;
1424
1425         if (!self)
1426                 goto err_exit;
1427
1428         for (i = 0U; i < self->aq_vecs; i++) {
1429                 aq_vec = self->aq_vec[i];
1430                 aq_vec_deinit(aq_vec);
1431                 aq_vec_ring_free(aq_vec);
1432         }
1433
1434         aq_ptp_unregister(self);
1435         aq_ptp_ring_deinit(self);
1436         aq_ptp_ring_free(self);
1437         aq_ptp_free(self);
1438
1439         if (likely(self->aq_fw_ops->deinit) && link_down) {
1440                 mutex_lock(&self->fwreq_mutex);
1441                 self->aq_fw_ops->deinit(self->aq_hw);
1442                 mutex_unlock(&self->fwreq_mutex);
1443         }
1444
1445 err_exit:;
1446 }
1447
1448 void aq_nic_free_vectors(struct aq_nic_s *self)
1449 {
1450         unsigned int i = 0U;
1451
1452         if (!self)
1453                 goto err_exit;
1454
1455         for (i = ARRAY_SIZE(self->aq_vec); i--;) {
1456                 if (self->aq_vec[i]) {
1457                         aq_vec_free(self->aq_vec[i]);
1458                         self->aq_vec[i] = NULL;
1459                 }
1460         }
1461
1462 err_exit:;
1463 }
1464
1465 int aq_nic_realloc_vectors(struct aq_nic_s *self)
1466 {
1467         struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
1468
1469         aq_nic_free_vectors(self);
1470
1471         for (self->aq_vecs = 0; self->aq_vecs < cfg->vecs; self->aq_vecs++) {
1472                 self->aq_vec[self->aq_vecs] = aq_vec_alloc(self, self->aq_vecs,
1473                                                            cfg);
1474                 if (unlikely(!self->aq_vec[self->aq_vecs]))
1475                         return -ENOMEM;
1476         }
1477
1478         return 0;
1479 }
1480
1481 void aq_nic_shutdown(struct aq_nic_s *self)
1482 {
1483         int err = 0;
1484
1485         if (!self->ndev)
1486                 return;
1487
1488         rtnl_lock();
1489
1490         netif_device_detach(self->ndev);
1491
1492         if (netif_running(self->ndev)) {
1493                 err = aq_nic_stop(self);
1494                 if (err < 0)
1495                         goto err_exit;
1496         }
1497         aq_nic_deinit(self, !self->aq_hw->aq_nic_cfg->wol);
1498         aq_nic_set_power(self);
1499
1500 err_exit:
1501         rtnl_unlock();
1502 }
1503
1504 u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type)
1505 {
1506         u8 location = 0xFF;
1507         u32 fltr_cnt;
1508         u32 n_bit;
1509
1510         switch (type) {
1511         case aq_rx_filter_ethertype:
1512                 location = AQ_RX_LAST_LOC_FETHERT - AQ_RX_FIRST_LOC_FETHERT -
1513                            self->aq_hw_rx_fltrs.fet_reserved_count;
1514                 self->aq_hw_rx_fltrs.fet_reserved_count++;
1515                 break;
1516         case aq_rx_filter_l3l4:
1517                 fltr_cnt = AQ_RX_LAST_LOC_FL3L4 - AQ_RX_FIRST_LOC_FL3L4;
1518                 n_bit = fltr_cnt - self->aq_hw_rx_fltrs.fl3l4.reserved_count;
1519
1520                 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 |= BIT(n_bit);
1521                 self->aq_hw_rx_fltrs.fl3l4.reserved_count++;
1522                 location = n_bit;
1523                 break;
1524         default:
1525                 break;
1526         }
1527
1528         return location;
1529 }
1530
1531 void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type,
1532                            u32 location)
1533 {
1534         switch (type) {
1535         case aq_rx_filter_ethertype:
1536                 self->aq_hw_rx_fltrs.fet_reserved_count--;
1537                 break;
1538         case aq_rx_filter_l3l4:
1539                 self->aq_hw_rx_fltrs.fl3l4.reserved_count--;
1540                 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 &= ~BIT(location);
1541                 break;
1542         default:
1543                 break;
1544         }
1545 }
1546
1547 int aq_nic_set_downshift(struct aq_nic_s *self, int val)
1548 {
1549         int err = 0;
1550         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1551
1552         if (!self->aq_fw_ops->set_downshift)
1553                 return -EOPNOTSUPP;
1554
1555         if (val > 15) {
1556                 netdev_err(self->ndev, "downshift counter should be <= 15\n");
1557                 return -EINVAL;
1558         }
1559         cfg->downshift_counter = val;
1560
1561         mutex_lock(&self->fwreq_mutex);
1562         err = self->aq_fw_ops->set_downshift(self->aq_hw, cfg->downshift_counter);
1563         mutex_unlock(&self->fwreq_mutex);
1564
1565         return err;
1566 }
1567
1568 int aq_nic_set_media_detect(struct aq_nic_s *self, int val)
1569 {
1570         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1571         int err = 0;
1572
1573         if (!self->aq_fw_ops->set_media_detect)
1574                 return -EOPNOTSUPP;
1575
1576         if (val > 0 && val != AQ_HW_MEDIA_DETECT_CNT) {
1577                 netdev_err(self->ndev, "EDPD on this device could have only fixed value of %d\n",
1578                            AQ_HW_MEDIA_DETECT_CNT);
1579                 return -EINVAL;
1580         }
1581
1582         mutex_lock(&self->fwreq_mutex);
1583         err = self->aq_fw_ops->set_media_detect(self->aq_hw, !!val);
1584         mutex_unlock(&self->fwreq_mutex);
1585
1586         /* msecs plays no role - configuration is always fixed in PHY */
1587         if (!err)
1588                 cfg->is_media_detect = !!val;
1589
1590         return err;
1591 }
1592
1593 int aq_nic_setup_tc_mqprio(struct aq_nic_s *self, u32 tcs, u8 *prio_tc_map)
1594 {
1595         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1596         const unsigned int prev_vecs = cfg->vecs;
1597         bool ndev_running;
1598         int err = 0;
1599         int i;
1600
1601         /* if already the same configuration or
1602          * disable request (tcs is 0) and we already is disabled
1603          */
1604         if (tcs == cfg->tcs || (tcs == 0 && !cfg->is_qos))
1605                 return 0;
1606
1607         ndev_running = netif_running(self->ndev);
1608         if (ndev_running)
1609                 dev_close(self->ndev);
1610
1611         cfg->tcs = tcs;
1612         if (cfg->tcs == 0)
1613                 cfg->tcs = 1;
1614         if (prio_tc_map)
1615                 memcpy(cfg->prio_tc_map, prio_tc_map, sizeof(cfg->prio_tc_map));
1616         else
1617                 for (i = 0; i < sizeof(cfg->prio_tc_map); i++)
1618                         cfg->prio_tc_map[i] = cfg->tcs * i / 8;
1619
1620         cfg->is_qos = !!tcs;
1621         cfg->is_ptp = (cfg->tcs <= AQ_HW_PTP_TC);
1622         if (!cfg->is_ptp)
1623                 netdev_warn(self->ndev, "%s\n",
1624                             "PTP is auto disabled due to requested TC count.");
1625
1626         netdev_set_num_tc(self->ndev, cfg->tcs);
1627
1628         /* Changing the number of TCs might change the number of vectors */
1629         aq_nic_cfg_update_num_vecs(self);
1630         if (prev_vecs != cfg->vecs) {
1631                 err = aq_nic_realloc_vectors(self);
1632                 if (err)
1633                         goto err_exit;
1634         }
1635
1636         if (ndev_running)
1637                 err = dev_open(self->ndev, NULL);
1638
1639 err_exit:
1640         return err;
1641 }
1642
1643 int aq_nic_setup_tc_max_rate(struct aq_nic_s *self, const unsigned int tc,
1644                              const u32 max_rate)
1645 {
1646         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1647
1648         if (tc >= AQ_CFG_TCS_MAX)
1649                 return -EINVAL;
1650
1651         if (max_rate && max_rate < 10) {
1652                 netdev_warn(self->ndev,
1653                         "Setting %s to the minimum usable value of %dMbps.\n",
1654                         "max rate", 10);
1655                 cfg->tc_max_rate[tc] = 10;
1656         } else {
1657                 cfg->tc_max_rate[tc] = max_rate;
1658         }
1659
1660         return 0;
1661 }
1662
1663 int aq_nic_setup_tc_min_rate(struct aq_nic_s *self, const unsigned int tc,
1664                              const u32 min_rate)
1665 {
1666         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1667
1668         if (tc >= AQ_CFG_TCS_MAX)
1669                 return -EINVAL;
1670
1671         if (min_rate)
1672                 set_bit(tc, &cfg->tc_min_rate_msk);
1673         else
1674                 clear_bit(tc, &cfg->tc_min_rate_msk);
1675
1676         if (min_rate && min_rate < 20) {
1677                 netdev_warn(self->ndev,
1678                         "Setting %s to the minimum usable value of %dMbps.\n",
1679                         "min rate", 20);
1680                 cfg->tc_min_rate[tc] = 20;
1681         } else {
1682                 cfg->tc_min_rate[tc] = min_rate;
1683         }
1684
1685         return 0;
1686 }