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

   1 /*
   2  * aQuantia Corporation Network Driver
   3  * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  */
   9
  10 /* File aq_nic.c: Definition of common code for NIC. */
  11
  12 #include "aq_nic.h"
  13 #include "aq_ring.h"
  14 #include "aq_vec.h"
  15 #include "aq_hw.h"
  16 #include "aq_pci_func.h"
  17
  18 #include <linux/moduleparam.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/timer.h>
  22 #include <linux/cpu.h>
  23 #include <linux/ip.h>
  24 #include <linux/tcp.h>
  25 #include <net/ip.h>
  26
  27 static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
  28 module_param_named(aq_itr, aq_itr, uint, 0644);
  29 MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
  30
  31 static unsigned int aq_itr_tx;
  32 module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
  33 MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
  34
  35 static unsigned int aq_itr_rx;
  36 module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
  37 MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
  38
  39 static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
  40
  41 static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
  42 {
  43         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  44         struct aq_rss_parameters *rss_params = &cfg->aq_rss;
  45         int i = 0;
  46
  47         static u8 rss_key[40] = {
  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
  55         rss_params->hash_secret_key_size = sizeof(rss_key);
  56         memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
  57         rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
  58
  59         for (i = rss_params->indirection_table_size; i--;)
  60                 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
  61 }
  62
  63 /* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
  64 void aq_nic_cfg_start(struct aq_nic_s *self)
  65 {
  66         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  67
  68         cfg->tcs = AQ_CFG_TCS_DEF;
  69
  70         cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
  71
  72         cfg->itr = aq_itr;
  73         cfg->tx_itr = aq_itr_tx;
  74         cfg->rx_itr = aq_itr_rx;
  75
  76         cfg->is_rss = AQ_CFG_IS_RSS_DEF;
  77         cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF;
  78         cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
  79         cfg->flow_control = AQ_CFG_FC_MODE;
  80
  81         cfg->mtu = AQ_CFG_MTU_DEF;
  82         cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
  83         cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
  84
  85         cfg->is_lro = AQ_CFG_IS_LRO_DEF;
  86
  87         cfg->vlan_id = 0U;
  88
  89         aq_nic_rss_init(self, cfg->num_rss_queues);
  90
  91         /*descriptors */
  92         cfg->rxds = min(cfg->aq_hw_caps->rxds, AQ_CFG_RXDS_DEF);
  93         cfg->txds = min(cfg->aq_hw_caps->txds, AQ_CFG_TXDS_DEF);
  94
  95         /*rss rings */
  96         cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
  97         cfg->vecs = min(cfg->vecs, num_online_cpus());
  98         cfg->vecs = min(cfg->vecs, self->irqvecs);
  99         /* cfg->vecs should be power of 2 for RSS */
 100         if (cfg->vecs >= 8U)
 101                 cfg->vecs = 8U;
 102         else if (cfg->vecs >= 4U)
 103                 cfg->vecs = 4U;
 104         else if (cfg->vecs >= 2U)
 105                 cfg->vecs = 2U;
 106         else
 107                 cfg->vecs = 1U;
 108
 109         cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
 110
 111         cfg->irq_type = aq_pci_func_get_irq_type(self);
 112
 113         if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
 114             (cfg->aq_hw_caps->vecs == 1U) ||
 115             (cfg->vecs == 1U)) {
 116                 cfg->is_rss = 0U;
 117                 cfg->vecs = 1U;
 118         }
 119
 120         cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
 121         cfg->hw_features = cfg->aq_hw_caps->hw_features;
 122 }
 123
 124 static int aq_nic_update_link_status(struct aq_nic_s *self)
 125 {
 126         int err = self->aq_fw_ops->update_link_status(self->aq_hw);
 127
 128         if (err)
 129                 return err;
 130
 131         if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
 132                 pr_info("%s: link change old %d new %d\n",
 133                         AQ_CFG_DRV_NAME, self->link_status.mbps,
 134                         self->aq_hw->aq_link_status.mbps);
 135                 aq_nic_update_interrupt_moderation_settings(self);
 136         }
 137
 138         self->link_status = self->aq_hw->aq_link_status;
 139         if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
 140                 aq_utils_obj_set(&self->flags,
 141                                  AQ_NIC_FLAG_STARTED);
 142                 aq_utils_obj_clear(&self->flags,
 143                                    AQ_NIC_LINK_DOWN);
 144                 netif_carrier_on(self->ndev);
 145                 netif_tx_wake_all_queues(self->ndev);
 146         }
 147         if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
 148                 netif_carrier_off(self->ndev);
 149                 netif_tx_disable(self->ndev);
 150                 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
 151         }
 152         return 0;
 153 }
 154
 155 static void aq_nic_service_timer_cb(struct timer_list *t)
 156 {
 157         struct aq_nic_s *self = from_timer(self, t, service_timer);
 158         int ctimer = AQ_CFG_SERVICE_TIMER_INTERVAL;
 159         int err = 0;
 160
 161         if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
 162                 goto err_exit;
 163
 164         err = aq_nic_update_link_status(self);
 165         if (err)
 166                 goto err_exit;
 167
 168         if (self->aq_fw_ops->update_stats)
 169                 self->aq_fw_ops->update_stats(self->aq_hw);
 170
 171         aq_nic_update_ndev_stats(self);
 172
 173         /* If no link - use faster timer rate to detect link up asap */
 174         if (!netif_carrier_ok(self->ndev))
 175                 ctimer = max(ctimer / 2, 1);
 176
 177 err_exit:
 178         mod_timer(&self->service_timer, jiffies + ctimer);
 179 }
 180
 181 static void aq_nic_polling_timer_cb(struct timer_list *t)
 182 {
 183         struct aq_nic_s *self = from_timer(self, t, polling_timer);
 184         struct aq_vec_s *aq_vec = NULL;
 185         unsigned int i = 0U;
 186
 187         for (i = 0U, aq_vec = self->aq_vec[0];
 188                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 189                 aq_vec_isr(i, (void *)aq_vec);
 190
 191         mod_timer(&self->polling_timer, jiffies +
 192                 AQ_CFG_POLLING_TIMER_INTERVAL);
 193 }
 194
 195 int aq_nic_ndev_register(struct aq_nic_s *self)
 196 {
 197         int err = 0;
 198
 199         if (!self->ndev) {
 200                 err = -EINVAL;
 201                 goto err_exit;
 202         }
 203
 204         err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops);
 205         if (err)
 206                 goto err_exit;
 207
 208         err = self->aq_fw_ops->get_mac_permanent(self->aq_hw,
 209                             self->ndev->dev_addr);
 210         if (err)
 211                 goto err_exit;
 212
 213 #if defined(AQ_CFG_MAC_ADDR_PERMANENT)
 214         {
 215                 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
 216
 217                 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
 218         }
 219 #endif
 220
 221         for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
 222              self->aq_vecs++) {
 223                 self->aq_vec[self->aq_vecs] =
 224                     aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
 225                 if (!self->aq_vec[self->aq_vecs]) {
 226                         err = -ENOMEM;
 227                         goto err_exit;
 228                 }
 229         }
 230
 231         netif_carrier_off(self->ndev);
 232
 233         netif_tx_disable(self->ndev);
 234
 235         err = register_netdev(self->ndev);
 236         if (err)
 237                 goto err_exit;
 238
 239 err_exit:
 240         return err;
 241 }
 242
 243 void aq_nic_ndev_init(struct aq_nic_s *self)
 244 {
 245         const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
 246         struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
 247
 248         self->ndev->hw_features |= aq_hw_caps->hw_features;
 249         self->ndev->features = aq_hw_caps->hw_features;
 250         self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
 251                                      NETIF_F_RXHASH | NETIF_F_SG | NETIF_F_LRO;
 252         self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
 253         self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
 254
 255         self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
 256         self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
 257
 258 }
 259
 260 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
 261                         struct aq_ring_s *ring)
 262 {
 263         self->aq_ring_tx[idx] = ring;
 264 }
 265
 266 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
 267 {
 268         return self->ndev;
 269 }
 270
 271 int aq_nic_init(struct aq_nic_s *self)
 272 {
 273         struct aq_vec_s *aq_vec = NULL;
 274         int err = 0;
 275         unsigned int i = 0U;
 276
 277         self->power_state = AQ_HW_POWER_STATE_D0;
 278         err = self->aq_hw_ops->hw_reset(self->aq_hw);
 279         if (err < 0)
 280                 goto err_exit;
 281
 282         err = self->aq_hw_ops->hw_init(self->aq_hw,
 283                                        aq_nic_get_ndev(self)->dev_addr);
 284         if (err < 0)
 285                 goto err_exit;
 286
 287         for (i = 0U, aq_vec = self->aq_vec[0];
 288                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 289                 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
 290
 291         netif_carrier_off(self->ndev);
 292
 293 err_exit:
 294         return err;
 295 }
 296
 297 int aq_nic_start(struct aq_nic_s *self)
 298 {
 299         struct aq_vec_s *aq_vec = NULL;
 300         int err = 0;
 301         unsigned int i = 0U;
 302
 303         err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 304                                                     self->mc_list.ar,
 305                                                     self->mc_list.count);
 306         if (err < 0)
 307                 goto err_exit;
 308
 309         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
 310                                                    self->packet_filter);
 311         if (err < 0)
 312                 goto err_exit;
 313
 314         for (i = 0U, aq_vec = self->aq_vec[0];
 315                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 316                 err = aq_vec_start(aq_vec);
 317                 if (err < 0)
 318                         goto err_exit;
 319         }
 320
 321         err = self->aq_hw_ops->hw_start(self->aq_hw);
 322         if (err < 0)
 323                 goto err_exit;
 324
 325         err = aq_nic_update_interrupt_moderation_settings(self);
 326         if (err)
 327                 goto err_exit;
 328         timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
 329         mod_timer(&self->service_timer, jiffies +
 330                         AQ_CFG_SERVICE_TIMER_INTERVAL);
 331
 332         if (self->aq_nic_cfg.is_polling) {
 333                 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
 334                 mod_timer(&self->polling_timer, jiffies +
 335                           AQ_CFG_POLLING_TIMER_INTERVAL);
 336         } else {
 337                 for (i = 0U, aq_vec = self->aq_vec[0];
 338                         self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 339                         err = aq_pci_func_alloc_irq(self, i,
 340                                                     self->ndev->name, aq_vec,
 341                                                     aq_vec_get_affinity_mask(aq_vec));
 342                         if (err < 0)
 343                                 goto err_exit;
 344                 }
 345
 346                 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
 347                                     AQ_CFG_IRQ_MASK);
 348                 if (err < 0)
 349                         goto err_exit;
 350         }
 351
 352         err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
 353         if (err < 0)
 354                 goto err_exit;
 355
 356         err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
 357         if (err < 0)
 358                 goto err_exit;
 359
 360         netif_tx_start_all_queues(self->ndev);
 361
 362 err_exit:
 363         return err;
 364 }
 365
 366 static unsigned int aq_nic_map_skb(struct aq_nic_s *self,
 367                                    struct sk_buff *skb,
 368                                    struct aq_ring_s *ring)
 369 {
 370         unsigned int ret = 0U;
 371         unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
 372         unsigned int frag_count = 0U;
 373         unsigned int dx = ring->sw_tail;
 374         struct aq_ring_buff_s *first = NULL;
 375         struct aq_ring_buff_s *dx_buff = &ring->buff_ring[dx];
 376
 377         if (unlikely(skb_is_gso(skb))) {
 378                 dx_buff->flags = 0U;
 379                 dx_buff->len_pkt = skb->len;
 380                 dx_buff->len_l2 = ETH_HLEN;
 381                 dx_buff->len_l3 = ip_hdrlen(skb);
 382                 dx_buff->len_l4 = tcp_hdrlen(skb);
 383                 dx_buff->mss = skb_shinfo(skb)->gso_size;
 384                 dx_buff->is_txc = 1U;
 385                 dx_buff->eop_index = 0xffffU;
 386
 387                 dx_buff->is_ipv6 =
 388                         (ip_hdr(skb)->version == 6) ? 1U : 0U;
 389
 390                 dx = aq_ring_next_dx(ring, dx);
 391                 dx_buff = &ring->buff_ring[dx];
 392                 ++ret;
 393         }
 394
 395         dx_buff->flags = 0U;
 396         dx_buff->len = skb_headlen(skb);
 397         dx_buff->pa = dma_map_single(aq_nic_get_dev(self),
 398                                      skb->data,
 399                                      dx_buff->len,
 400                                      DMA_TO_DEVICE);
 401
 402         if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa)))
 403                 goto exit;
 404
 405         first = dx_buff;
 406         dx_buff->len_pkt = skb->len;
 407         dx_buff->is_sop = 1U;
 408         dx_buff->is_mapped = 1U;
 409         ++ret;
 410
 411         if (skb->ip_summed == CHECKSUM_PARTIAL) {
 412                 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ?
 413                         1U : 0U;
 414
 415                 if (ip_hdr(skb)->version == 4) {
 416                         dx_buff->is_tcp_cso =
 417                                 (ip_hdr(skb)->protocol == IPPROTO_TCP) ?
 418                                         1U : 0U;
 419                         dx_buff->is_udp_cso =
 420                                 (ip_hdr(skb)->protocol == IPPROTO_UDP) ?
 421                                         1U : 0U;
 422                 } else if (ip_hdr(skb)->version == 6) {
 423                         dx_buff->is_tcp_cso =
 424                                 (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP) ?
 425                                         1U : 0U;
 426                         dx_buff->is_udp_cso =
 427                                 (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP) ?
 428                                         1U : 0U;
 429                 }
 430         }
 431
 432         for (; nr_frags--; ++frag_count) {
 433                 unsigned int frag_len = 0U;
 434                 unsigned int buff_offset = 0U;
 435                 unsigned int buff_size = 0U;
 436                 dma_addr_t frag_pa;
 437                 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
 438
 439                 frag_len = skb_frag_size(frag);
 440
 441                 while (frag_len) {
 442                         if (frag_len > AQ_CFG_TX_FRAME_MAX)
 443                                 buff_size = AQ_CFG_TX_FRAME_MAX;
 444                         else
 445                                 buff_size = frag_len;
 446
 447                         frag_pa = skb_frag_dma_map(aq_nic_get_dev(self),
 448                                                    frag,
 449                                                    buff_offset,
 450                                                    buff_size,
 451                                                    DMA_TO_DEVICE);
 452
 453                         if (unlikely(dma_mapping_error(aq_nic_get_dev(self),
 454                                                        frag_pa)))
 455                                 goto mapping_error;
 456
 457                         dx = aq_ring_next_dx(ring, dx);
 458                         dx_buff = &ring->buff_ring[dx];
 459
 460                         dx_buff->flags = 0U;
 461                         dx_buff->len = buff_size;
 462                         dx_buff->pa = frag_pa;
 463                         dx_buff->is_mapped = 1U;
 464                         dx_buff->eop_index = 0xffffU;
 465
 466                         frag_len -= buff_size;
 467                         buff_offset += buff_size;
 468
 469                         ++ret;
 470                 }
 471         }
 472
 473         first->eop_index = dx;
 474         dx_buff->is_eop = 1U;
 475         dx_buff->skb = skb;
 476         goto exit;
 477
 478 mapping_error:
 479         for (dx = ring->sw_tail;
 480              ret > 0;
 481              --ret, dx = aq_ring_next_dx(ring, dx)) {
 482                 dx_buff = &ring->buff_ring[dx];
 483
 484                 if (!dx_buff->is_txc && dx_buff->pa) {
 485                         if (unlikely(dx_buff->is_sop)) {
 486                                 dma_unmap_single(aq_nic_get_dev(self),
 487                                                  dx_buff->pa,
 488                                                  dx_buff->len,
 489                                                  DMA_TO_DEVICE);
 490                         } else {
 491                                 dma_unmap_page(aq_nic_get_dev(self),
 492                                                dx_buff->pa,
 493                                                dx_buff->len,
 494                                                DMA_TO_DEVICE);
 495                         }
 496                 }
 497         }
 498
 499 exit:
 500         return ret;
 501 }
 502
 503 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
 504 {
 505         struct aq_ring_s *ring = NULL;
 506         unsigned int frags = 0U;
 507         unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
 508         unsigned int tc = 0U;
 509         int err = NETDEV_TX_OK;
 510
 511         frags = skb_shinfo(skb)->nr_frags + 1;
 512
 513         ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
 514
 515         if (frags > AQ_CFG_SKB_FRAGS_MAX) {
 516                 dev_kfree_skb_any(skb);
 517                 goto err_exit;
 518         }
 519
 520         aq_ring_update_queue_state(ring);
 521
 522         /* Above status update may stop the queue. Check this. */
 523         if (__netif_subqueue_stopped(self->ndev, ring->idx)) {
 524                 err = NETDEV_TX_BUSY;
 525                 goto err_exit;
 526         }
 527
 528         frags = aq_nic_map_skb(self, skb, ring);
 529
 530         if (likely(frags)) {
 531                 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
 532                                                        ring, frags);
 533                 if (err >= 0) {
 534                         ++ring->stats.tx.packets;
 535                         ring->stats.tx.bytes += skb->len;
 536                 }
 537         } else {
 538                 err = NETDEV_TX_BUSY;
 539         }
 540
 541 err_exit:
 542         return err;
 543 }
 544
 545 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
 546 {
 547         return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
 548 }
 549
 550 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
 551 {
 552         int err = 0;
 553
 554         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
 555         if (err < 0)
 556                 goto err_exit;
 557
 558         self->packet_filter = flags;
 559
 560 err_exit:
 561         return err;
 562 }
 563
 564 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
 565 {
 566         struct netdev_hw_addr *ha = NULL;
 567         unsigned int i = 0U;
 568
 569         self->mc_list.count = 0U;
 570
 571         netdev_for_each_mc_addr(ha, ndev) {
 572                 ether_addr_copy(self->mc_list.ar[i++], ha->addr);
 573                 ++self->mc_list.count;
 574
 575                 if (i >= AQ_CFG_MULTICAST_ADDRESS_MAX)
 576                         break;
 577         }
 578
 579         if (i >= AQ_CFG_MULTICAST_ADDRESS_MAX) {
 580                 /* Number of filters is too big: atlantic does not support this.
 581                  * Force all multi filter to support this.
 582                  * With this we disable all UC filters and setup "all pass"
 583                  * multicast mask
 584                  */
 585                 self->packet_filter |= IFF_ALLMULTI;
 586                 self->aq_nic_cfg.mc_list_count = 0;
 587                 return self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
 588                                                              self->packet_filter);
 589         } else {
 590                 return self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 591                                                     self->mc_list.ar,
 592                                                     self->mc_list.count);
 593         }
 594 }
 595
 596 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
 597 {
 598         self->aq_nic_cfg.mtu = new_mtu;
 599
 600         return 0;
 601 }
 602
 603 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
 604 {
 605         return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
 606 }
 607
 608 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
 609 {
 610         return self->link_status.mbps;
 611 }
 612
 613 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
 614 {
 615         u32 *regs_buff = p;
 616         int err = 0;
 617
 618         regs->version = 1;
 619
 620         err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
 621                                            self->aq_nic_cfg.aq_hw_caps,
 622                                            regs_buff);
 623         if (err < 0)
 624                 goto err_exit;
 625
 626 err_exit:
 627         return err;
 628 }
 629
 630 int aq_nic_get_regs_count(struct aq_nic_s *self)
 631 {
 632         return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
 633 }
 634
 635 void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
 636 {
 637         unsigned int i = 0U;
 638         unsigned int count = 0U;
 639         struct aq_vec_s *aq_vec = NULL;
 640         struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 641
 642         if (!stats)
 643                 goto err_exit;
 644
 645         data[i] = stats->uprc + stats->mprc + stats->bprc;
 646         data[++i] = stats->uprc;
 647         data[++i] = stats->mprc;
 648         data[++i] = stats->bprc;
 649         data[++i] = stats->erpt;
 650         data[++i] = stats->uptc + stats->mptc + stats->bptc;
 651         data[++i] = stats->uptc;
 652         data[++i] = stats->mptc;
 653         data[++i] = stats->bptc;
 654         data[++i] = stats->ubrc;
 655         data[++i] = stats->ubtc;
 656         data[++i] = stats->mbrc;
 657         data[++i] = stats->mbtc;
 658         data[++i] = stats->bbrc;
 659         data[++i] = stats->bbtc;
 660         data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
 661         data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
 662         data[++i] = stats->dma_pkt_rc;
 663         data[++i] = stats->dma_pkt_tc;
 664         data[++i] = stats->dma_oct_rc;
 665         data[++i] = stats->dma_oct_tc;
 666         data[++i] = stats->dpc;
 667
 668         i++;
 669
 670         data += i;
 671
 672         for (i = 0U, aq_vec = self->aq_vec[0];
 673                 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 674                 data += count;
 675                 aq_vec_get_sw_stats(aq_vec, data, &count);
 676         }
 677
 678 err_exit:;
 679 }
 680
 681 static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
 682 {
 683         struct net_device *ndev = self->ndev;
 684         struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 685
 686         ndev->stats.rx_packets = stats->uprc + stats->mprc + stats->bprc;
 687         ndev->stats.rx_bytes = stats->ubrc + stats->mbrc + stats->bbrc;
 688         ndev->stats.rx_errors = stats->erpr;
 689         ndev->stats.tx_packets = stats->uptc + stats->mptc + stats->bptc;
 690         ndev->stats.tx_bytes = stats->ubtc + stats->mbtc + stats->bbtc;
 691         ndev->stats.tx_errors = stats->erpt;
 692         ndev->stats.multicast = stats->mprc;
 693 }
 694
 695 void aq_nic_get_link_ksettings(struct aq_nic_s *self,
 696                                struct ethtool_link_ksettings *cmd)
 697 {
 698         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 699                 cmd->base.port = PORT_FIBRE;
 700         else
 701                 cmd->base.port = PORT_TP;
 702         /* This driver supports only 10G capable adapters, so DUPLEX_FULL */
 703         cmd->base.duplex = DUPLEX_FULL;
 704         cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
 705
 706         ethtool_link_ksettings_zero_link_mode(cmd, supported);
 707
 708         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
 709                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 710                                                      10000baseT_Full);
 711
 712         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
 713                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 714                                                      5000baseT_Full);
 715
 716         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS)
 717                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 718                                                      2500baseT_Full);
 719
 720         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
 721                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 722                                                      1000baseT_Full);
 723
 724         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
 725                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 726                                                      100baseT_Full);
 727
 728         if (self->aq_nic_cfg.aq_hw_caps->flow_control)
 729                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 730                                                      Pause);
 731
 732         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
 733
 734         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 735                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 736         else
 737                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 738
 739         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
 740
 741         if (self->aq_nic_cfg.is_autoneg)
 742                 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
 743
 744         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_10G)
 745                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 746                                                      10000baseT_Full);
 747
 748         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_5G)
 749                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 750                                                      5000baseT_Full);
 751
 752         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_2GS)
 753                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 754                                                      2500baseT_Full);
 755
 756         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_1G)
 757                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 758                                                      1000baseT_Full);
 759
 760         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_100M)
 761                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 762                                                      100baseT_Full);
 763
 764         if (self->aq_nic_cfg.flow_control)
 765                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 766                                                      Pause);
 767
 768         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 769                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 770         else
 771                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 772 }
 773
 774 int aq_nic_set_link_ksettings(struct aq_nic_s *self,
 775                               const struct ethtool_link_ksettings *cmd)
 776 {
 777         u32 speed = 0U;
 778         u32 rate = 0U;
 779         int err = 0;
 780
 781         if (cmd->base.autoneg == AUTONEG_ENABLE) {
 782                 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
 783                 self->aq_nic_cfg.is_autoneg = true;
 784         } else {
 785                 speed = cmd->base.speed;
 786
 787                 switch (speed) {
 788                 case SPEED_100:
 789                         rate = AQ_NIC_RATE_100M;
 790                         break;
 791
 792                 case SPEED_1000:
 793                         rate = AQ_NIC_RATE_1G;
 794                         break;
 795
 796                 case SPEED_2500:
 797                         rate = AQ_NIC_RATE_2GS;
 798                         break;
 799
 800                 case SPEED_5000:
 801                         rate = AQ_NIC_RATE_5G;
 802                         break;
 803
 804                 case SPEED_10000:
 805                         rate = AQ_NIC_RATE_10G;
 806                         break;
 807
 808                 default:
 809                         err = -1;
 810                         goto err_exit;
 811                 break;
 812                 }
 813                 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
 814                         err = -1;
 815                         goto err_exit;
 816                 }
 817
 818                 self->aq_nic_cfg.is_autoneg = false;
 819         }
 820
 821         err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
 822         if (err < 0)
 823                 goto err_exit;
 824
 825         self->aq_nic_cfg.link_speed_msk = rate;
 826
 827 err_exit:
 828         return err;
 829 }
 830
 831 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
 832 {
 833         return &self->aq_nic_cfg;
 834 }
 835
 836 u32 aq_nic_get_fw_version(struct aq_nic_s *self)
 837 {
 838         u32 fw_version = 0U;
 839
 840         self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version);
 841
 842         return fw_version;
 843 }
 844
 845 int aq_nic_stop(struct aq_nic_s *self)
 846 {
 847         struct aq_vec_s *aq_vec = NULL;
 848         unsigned int i = 0U;
 849
 850         netif_tx_disable(self->ndev);
 851         netif_carrier_off(self->ndev);
 852
 853         del_timer_sync(&self->service_timer);
 854
 855         self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
 856
 857         if (self->aq_nic_cfg.is_polling)
 858                 del_timer_sync(&self->polling_timer);
 859         else
 860                 aq_pci_func_free_irqs(self);
 861
 862         for (i = 0U, aq_vec = self->aq_vec[0];
 863                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 864                 aq_vec_stop(aq_vec);
 865
 866         return self->aq_hw_ops->hw_stop(self->aq_hw);
 867 }
 868
 869 void aq_nic_deinit(struct aq_nic_s *self)
 870 {
 871         struct aq_vec_s *aq_vec = NULL;
 872         unsigned int i = 0U;
 873
 874         if (!self)
 875                 goto err_exit;
 876
 877         for (i = 0U, aq_vec = self->aq_vec[0];
 878                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 879                 aq_vec_deinit(aq_vec);
 880
 881         if (self->power_state == AQ_HW_POWER_STATE_D0) {
 882                 (void)self->aq_hw_ops->hw_deinit(self->aq_hw);
 883         } else {
 884                 (void)self->aq_hw_ops->hw_set_power(self->aq_hw,
 885                                                    self->power_state);
 886         }
 887
 888 err_exit:;
 889 }
 890
 891 void aq_nic_free_vectors(struct aq_nic_s *self)
 892 {
 893         unsigned int i = 0U;
 894
 895         if (!self)
 896                 goto err_exit;
 897
 898         for (i = ARRAY_SIZE(self->aq_vec); i--;) {
 899                 if (self->aq_vec[i]) {
 900                         aq_vec_free(self->aq_vec[i]);
 901                         self->aq_vec[i] = NULL;
 902                 }
 903         }
 904
 905 err_exit:;
 906 }
 907
 908 int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg)
 909 {
 910         int err = 0;
 911
 912         if (!netif_running(self->ndev)) {
 913                 err = 0;
 914                 goto out;
 915         }
 916         rtnl_lock();
 917         if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) {
 918                 self->power_state = AQ_HW_POWER_STATE_D3;
 919                 netif_device_detach(self->ndev);
 920                 netif_tx_stop_all_queues(self->ndev);
 921
 922                 err = aq_nic_stop(self);
 923                 if (err < 0)
 924                         goto err_exit;
 925
 926                 aq_nic_deinit(self);
 927         } else {
 928                 err = aq_nic_init(self);
 929                 if (err < 0)
 930                         goto err_exit;
 931
 932                 err = aq_nic_start(self);
 933                 if (err < 0)
 934                         goto err_exit;
 935
 936                 netif_device_attach(self->ndev);
 937                 netif_tx_start_all_queues(self->ndev);
 938         }
 939
 940 err_exit:
 941         rtnl_unlock();
 942 out:
 943         return err;
 944 }
 945
 946 void aq_nic_shutdown(struct aq_nic_s *self)
 947 {
 948         int err = 0;
 949
 950         if (!self->ndev)
 951                 return;
 952
 953         rtnl_lock();
 954
 955         netif_device_detach(self->ndev);
 956
 957         if (netif_running(self->ndev)) {
 958                 err = aq_nic_stop(self);
 959                 if (err < 0)
 960                         goto err_exit;
 961         }
 962         aq_nic_deinit(self);
 963
 964 err_exit:
 965         rtnl_unlock();
 966 }