1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * aQuantia Corporation Network Driver 4 * Copyright (C) 2014-2019 aQuantia Corporation. All rights reserved 5 */ 6 7 /* File aq_nic.c: Definition of common code for NIC. */ 8 9 #include "aq_nic.h" 10 #include "aq_ring.h" 11 #include "aq_vec.h" 12 #include "aq_hw.h" 13 #include "aq_pci_func.h" 14 #include "aq_macsec.h" 15 #include "aq_main.h" 16 #include "aq_phy.h" 17 #include "aq_ptp.h" 18 #include "aq_filters.h" 19 20 #include <linux/moduleparam.h> 21 #include <linux/netdevice.h> 22 #include <linux/etherdevice.h> 23 #include <linux/timer.h> 24 #include <linux/cpu.h> 25 #include <linux/ip.h> 26 #include <linux/tcp.h> 27 #include <net/ip.h> 28 29 static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO; 30 module_param_named(aq_itr, aq_itr, uint, 0644); 31 MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode"); 32 33 static unsigned int aq_itr_tx; 34 module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644); 35 MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate"); 36 37 static unsigned int aq_itr_rx; 38 module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644); 39 MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate"); 40 41 static void aq_nic_update_ndev_stats(struct aq_nic_s *self); 42 43 static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues) 44 { 45 static u8 rss_key[AQ_CFG_RSS_HASHKEY_SIZE] = { 46 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d, 47 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18, 48 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8, 49 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70, 50 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c 51 }; 52 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 53 struct aq_rss_parameters *rss_params; 54 int i = 0; 55 56 rss_params = &cfg->aq_rss; 57 58 rss_params->hash_secret_key_size = sizeof(rss_key); 59 memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key)); 60 rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX; 61 62 for (i = rss_params->indirection_table_size; i--;) 63 rss_params->indirection_table[i] = i & (num_rss_queues - 1); 64 } 65 66 /* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */ 67 void aq_nic_cfg_start(struct aq_nic_s *self) 68 { 69 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 70 71 cfg->tcs = AQ_CFG_TCS_DEF; 72 73 cfg->is_polling = AQ_CFG_IS_POLLING_DEF; 74 75 cfg->itr = aq_itr; 76 cfg->tx_itr = aq_itr_tx; 77 cfg->rx_itr = aq_itr_rx; 78 79 cfg->rxpageorder = AQ_CFG_RX_PAGEORDER; 80 cfg->is_rss = AQ_CFG_IS_RSS_DEF; 81 cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF; 82 cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF; 83 cfg->fc.req = AQ_CFG_FC_MODE; 84 cfg->wol = AQ_CFG_WOL_MODES; 85 86 cfg->mtu = AQ_CFG_MTU_DEF; 87 cfg->link_speed_msk = AQ_CFG_SPEED_MSK; 88 cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF; 89 90 cfg->is_lro = AQ_CFG_IS_LRO_DEF; 91 92 /*descriptors */ 93 cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF); 94 cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF); 95 96 /*rss rings */ 97 cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF); 98 cfg->vecs = min(cfg->vecs, num_online_cpus()); 99 if (self->irqvecs > AQ_HW_SERVICE_IRQS) 100 cfg->vecs = min(cfg->vecs, self->irqvecs - AQ_HW_SERVICE_IRQS); 101 /* cfg->vecs should be power of 2 for RSS */ 102 if (cfg->vecs >= 8U) 103 cfg->vecs = 8U; 104 else if (cfg->vecs >= 4U) 105 cfg->vecs = 4U; 106 else if (cfg->vecs >= 2U) 107 cfg->vecs = 2U; 108 else 109 cfg->vecs = 1U; 110 111 cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF); 112 113 aq_nic_rss_init(self, cfg->num_rss_queues); 114 115 cfg->irq_type = aq_pci_func_get_irq_type(self); 116 117 if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) || 118 (cfg->aq_hw_caps->vecs == 1U) || 119 (cfg->vecs == 1U)) { 120 cfg->is_rss = 0U; 121 cfg->vecs = 1U; 122 } 123 124 /* Check if we have enough vectors allocated for 125 * link status IRQ. If no - we'll know link state from 126 * slower service task. 127 */ 128 if (AQ_HW_SERVICE_IRQS > 0 && cfg->vecs + 1 <= self->irqvecs) 129 cfg->link_irq_vec = cfg->vecs; 130 else 131 cfg->link_irq_vec = 0; 132 133 cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk; 134 cfg->features = cfg->aq_hw_caps->hw_features; 135 cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX); 136 cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX); 137 cfg->is_vlan_force_promisc = true; 138 } 139 140 static int aq_nic_update_link_status(struct aq_nic_s *self) 141 { 142 int err = self->aq_fw_ops->update_link_status(self->aq_hw); 143 u32 fc = 0; 144 145 if (err) 146 return err; 147 148 if (self->aq_fw_ops->get_flow_control) 149 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc); 150 self->aq_nic_cfg.fc.cur = fc; 151 152 if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) { 153 netdev_info(self->ndev, "%s: link change old %d new %d\n", 154 AQ_CFG_DRV_NAME, self->link_status.mbps, 155 self->aq_hw->aq_link_status.mbps); 156 aq_nic_update_interrupt_moderation_settings(self); 157 158 if (self->aq_ptp) { 159 aq_ptp_clock_init(self); 160 aq_ptp_tm_offset_set(self, 161 self->aq_hw->aq_link_status.mbps); 162 aq_ptp_link_change(self); 163 } 164 165 /* Driver has to update flow control settings on RX block 166 * on any link event. 167 * We should query FW whether it negotiated FC. 168 */ 169 if (self->aq_hw_ops->hw_set_fc) 170 self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0); 171 } 172 173 self->link_status = self->aq_hw->aq_link_status; 174 if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) { 175 aq_utils_obj_set(&self->flags, 176 AQ_NIC_FLAG_STARTED); 177 aq_utils_obj_clear(&self->flags, 178 AQ_NIC_LINK_DOWN); 179 netif_carrier_on(self->ndev); 180 #if IS_ENABLED(CONFIG_MACSEC) 181 aq_macsec_enable(self); 182 #endif 183 netif_tx_wake_all_queues(self->ndev); 184 } 185 if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) { 186 netif_carrier_off(self->ndev); 187 netif_tx_disable(self->ndev); 188 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN); 189 } 190 191 return 0; 192 } 193 194 static irqreturn_t aq_linkstate_threaded_isr(int irq, void *private) 195 { 196 struct aq_nic_s *self = private; 197 198 if (!self) 199 return IRQ_NONE; 200 201 aq_nic_update_link_status(self); 202 203 self->aq_hw_ops->hw_irq_enable(self->aq_hw, 204 BIT(self->aq_nic_cfg.link_irq_vec)); 205 206 return IRQ_HANDLED; 207 } 208 209 static void aq_nic_service_task(struct work_struct *work) 210 { 211 struct aq_nic_s *self = container_of(work, struct aq_nic_s, 212 service_task); 213 int err; 214 215 aq_ptp_service_task(self); 216 217 if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY)) 218 return; 219 220 err = aq_nic_update_link_status(self); 221 if (err) 222 return; 223 224 #if IS_ENABLED(CONFIG_MACSEC) 225 aq_macsec_work(self); 226 #endif 227 228 mutex_lock(&self->fwreq_mutex); 229 if (self->aq_fw_ops->update_stats) 230 self->aq_fw_ops->update_stats(self->aq_hw); 231 mutex_unlock(&self->fwreq_mutex); 232 233 aq_nic_update_ndev_stats(self); 234 } 235 236 static void aq_nic_service_timer_cb(struct timer_list *t) 237 { 238 struct aq_nic_s *self = from_timer(self, t, service_timer); 239 240 mod_timer(&self->service_timer, 241 jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL); 242 243 aq_ndev_schedule_work(&self->service_task); 244 } 245 246 static void aq_nic_polling_timer_cb(struct timer_list *t) 247 { 248 struct aq_nic_s *self = from_timer(self, t, polling_timer); 249 struct aq_vec_s *aq_vec = NULL; 250 unsigned int i = 0U; 251 252 for (i = 0U, aq_vec = self->aq_vec[0]; 253 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 254 aq_vec_isr(i, (void *)aq_vec); 255 256 mod_timer(&self->polling_timer, jiffies + 257 AQ_CFG_POLLING_TIMER_INTERVAL); 258 } 259 260 int aq_nic_ndev_register(struct aq_nic_s *self) 261 { 262 int err = 0; 263 264 if (!self->ndev) { 265 err = -EINVAL; 266 goto err_exit; 267 } 268 269 err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops); 270 if (err) 271 goto err_exit; 272 273 #if IS_ENABLED(CONFIG_MACSEC) 274 aq_macsec_init(self); 275 #endif 276 277 mutex_lock(&self->fwreq_mutex); 278 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, 279 self->ndev->dev_addr); 280 mutex_unlock(&self->fwreq_mutex); 281 if (err) 282 goto err_exit; 283 284 #if defined(AQ_CFG_MAC_ADDR_PERMANENT) 285 { 286 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT; 287 288 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent); 289 } 290 #endif 291 292 for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs; 293 self->aq_vecs++) { 294 self->aq_vec[self->aq_vecs] = 295 aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self)); 296 if (!self->aq_vec[self->aq_vecs]) { 297 err = -ENOMEM; 298 goto err_exit; 299 } 300 } 301 302 netif_carrier_off(self->ndev); 303 304 netif_tx_disable(self->ndev); 305 306 err = register_netdev(self->ndev); 307 if (err) 308 goto err_exit; 309 310 err_exit: 311 #if IS_ENABLED(CONFIG_MACSEC) 312 if (err) 313 aq_macsec_free(self); 314 #endif 315 return err; 316 } 317 318 void aq_nic_ndev_init(struct aq_nic_s *self) 319 { 320 const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps; 321 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg; 322 323 self->ndev->hw_features |= aq_hw_caps->hw_features; 324 self->ndev->features = aq_hw_caps->hw_features; 325 self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM | 326 NETIF_F_RXHASH | NETIF_F_SG | 327 NETIF_F_LRO | NETIF_F_TSO; 328 self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4; 329 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags; 330 self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 331 332 self->msg_enable = NETIF_MSG_DRV | NETIF_MSG_LINK; 333 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN; 334 self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN; 335 336 } 337 338 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx, 339 struct aq_ring_s *ring) 340 { 341 self->aq_ring_tx[idx] = ring; 342 } 343 344 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self) 345 { 346 return self->ndev; 347 } 348 349 int aq_nic_init(struct aq_nic_s *self) 350 { 351 struct aq_vec_s *aq_vec = NULL; 352 unsigned int i = 0U; 353 int err = 0; 354 355 self->power_state = AQ_HW_POWER_STATE_D0; 356 mutex_lock(&self->fwreq_mutex); 357 err = self->aq_hw_ops->hw_reset(self->aq_hw); 358 mutex_unlock(&self->fwreq_mutex); 359 if (err < 0) 360 goto err_exit; 361 362 err = self->aq_hw_ops->hw_init(self->aq_hw, 363 aq_nic_get_ndev(self)->dev_addr); 364 if (err < 0) 365 goto err_exit; 366 367 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) { 368 self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX; 369 err = aq_phy_init(self->aq_hw); 370 } 371 372 for (i = 0U, aq_vec = self->aq_vec[0]; 373 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 374 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw); 375 376 err = aq_ptp_init(self, self->irqvecs - 1); 377 if (err < 0) 378 goto err_exit; 379 380 err = aq_ptp_ring_alloc(self); 381 if (err < 0) 382 goto err_exit; 383 384 err = aq_ptp_ring_init(self); 385 if (err < 0) 386 goto err_exit; 387 388 netif_carrier_off(self->ndev); 389 390 err_exit: 391 return err; 392 } 393 394 int aq_nic_start(struct aq_nic_s *self) 395 { 396 struct aq_vec_s *aq_vec = NULL; 397 unsigned int i = 0U; 398 int err = 0; 399 400 err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw, 401 self->mc_list.ar, 402 self->mc_list.count); 403 if (err < 0) 404 goto err_exit; 405 406 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, 407 self->packet_filter); 408 if (err < 0) 409 goto err_exit; 410 411 for (i = 0U, aq_vec = self->aq_vec[0]; 412 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 413 err = aq_vec_start(aq_vec); 414 if (err < 0) 415 goto err_exit; 416 } 417 418 err = aq_ptp_ring_start(self); 419 if (err < 0) 420 goto err_exit; 421 422 aq_nic_set_loopback(self); 423 424 err = self->aq_hw_ops->hw_start(self->aq_hw); 425 if (err < 0) 426 goto err_exit; 427 428 err = aq_nic_update_interrupt_moderation_settings(self); 429 if (err) 430 goto err_exit; 431 432 INIT_WORK(&self->service_task, aq_nic_service_task); 433 434 timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0); 435 aq_nic_service_timer_cb(&self->service_timer); 436 437 if (self->aq_nic_cfg.is_polling) { 438 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0); 439 mod_timer(&self->polling_timer, jiffies + 440 AQ_CFG_POLLING_TIMER_INTERVAL); 441 } else { 442 for (i = 0U, aq_vec = self->aq_vec[0]; 443 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 444 err = aq_pci_func_alloc_irq(self, i, self->ndev->name, 445 aq_vec_isr, aq_vec, 446 aq_vec_get_affinity_mask(aq_vec)); 447 if (err < 0) 448 goto err_exit; 449 } 450 451 err = aq_ptp_irq_alloc(self); 452 if (err < 0) 453 goto err_exit; 454 455 if (self->aq_nic_cfg.link_irq_vec) { 456 int irqvec = pci_irq_vector(self->pdev, 457 self->aq_nic_cfg.link_irq_vec); 458 err = request_threaded_irq(irqvec, NULL, 459 aq_linkstate_threaded_isr, 460 IRQF_SHARED | IRQF_ONESHOT, 461 self->ndev->name, self); 462 if (err < 0) 463 goto err_exit; 464 self->msix_entry_mask |= (1 << self->aq_nic_cfg.link_irq_vec); 465 } 466 467 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw, 468 AQ_CFG_IRQ_MASK); 469 if (err < 0) 470 goto err_exit; 471 } 472 473 err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs); 474 if (err < 0) 475 goto err_exit; 476 477 err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs); 478 if (err < 0) 479 goto err_exit; 480 481 netif_tx_start_all_queues(self->ndev); 482 483 err_exit: 484 return err; 485 } 486 487 unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb, 488 struct aq_ring_s *ring) 489 { 490 unsigned int nr_frags = skb_shinfo(skb)->nr_frags; 491 struct aq_ring_buff_s *first = NULL; 492 u8 ipver = ip_hdr(skb)->version; 493 struct aq_ring_buff_s *dx_buff; 494 bool need_context_tag = false; 495 unsigned int frag_count = 0U; 496 unsigned int ret = 0U; 497 unsigned int dx; 498 u8 l4proto = 0; 499 500 if (ipver == 4) 501 l4proto = ip_hdr(skb)->protocol; 502 else if (ipver == 6) 503 l4proto = ipv6_hdr(skb)->nexthdr; 504 505 dx = ring->sw_tail; 506 dx_buff = &ring->buff_ring[dx]; 507 dx_buff->flags = 0U; 508 509 if (unlikely(skb_is_gso(skb))) { 510 dx_buff->mss = skb_shinfo(skb)->gso_size; 511 if (l4proto == IPPROTO_TCP) { 512 dx_buff->is_gso_tcp = 1U; 513 dx_buff->len_l4 = tcp_hdrlen(skb); 514 } else if (l4proto == IPPROTO_UDP) { 515 dx_buff->is_gso_udp = 1U; 516 dx_buff->len_l4 = sizeof(struct udphdr); 517 /* UDP GSO Hardware does not replace packet length. */ 518 udp_hdr(skb)->len = htons(dx_buff->mss + 519 dx_buff->len_l4); 520 } else { 521 WARN_ONCE(true, "Bad GSO mode"); 522 goto exit; 523 } 524 dx_buff->len_pkt = skb->len; 525 dx_buff->len_l2 = ETH_HLEN; 526 dx_buff->len_l3 = skb_network_header_len(skb); 527 dx_buff->eop_index = 0xffffU; 528 dx_buff->is_ipv6 = (ipver == 6); 529 need_context_tag = true; 530 } 531 532 if (self->aq_nic_cfg.is_vlan_tx_insert && skb_vlan_tag_present(skb)) { 533 dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb); 534 dx_buff->len_pkt = skb->len; 535 dx_buff->is_vlan = 1U; 536 need_context_tag = true; 537 } 538 539 if (need_context_tag) { 540 dx = aq_ring_next_dx(ring, dx); 541 dx_buff = &ring->buff_ring[dx]; 542 dx_buff->flags = 0U; 543 ++ret; 544 } 545 546 dx_buff->len = skb_headlen(skb); 547 dx_buff->pa = dma_map_single(aq_nic_get_dev(self), 548 skb->data, 549 dx_buff->len, 550 DMA_TO_DEVICE); 551 552 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa))) { 553 ret = 0; 554 goto exit; 555 } 556 557 first = dx_buff; 558 dx_buff->len_pkt = skb->len; 559 dx_buff->is_sop = 1U; 560 dx_buff->is_mapped = 1U; 561 ++ret; 562 563 if (skb->ip_summed == CHECKSUM_PARTIAL) { 564 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol); 565 dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP); 566 dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP); 567 } 568 569 for (; nr_frags--; ++frag_count) { 570 unsigned int frag_len = 0U; 571 unsigned int buff_offset = 0U; 572 unsigned int buff_size = 0U; 573 dma_addr_t frag_pa; 574 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count]; 575 576 frag_len = skb_frag_size(frag); 577 578 while (frag_len) { 579 if (frag_len > AQ_CFG_TX_FRAME_MAX) 580 buff_size = AQ_CFG_TX_FRAME_MAX; 581 else 582 buff_size = frag_len; 583 584 frag_pa = skb_frag_dma_map(aq_nic_get_dev(self), 585 frag, 586 buff_offset, 587 buff_size, 588 DMA_TO_DEVICE); 589 590 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), 591 frag_pa))) 592 goto mapping_error; 593 594 dx = aq_ring_next_dx(ring, dx); 595 dx_buff = &ring->buff_ring[dx]; 596 597 dx_buff->flags = 0U; 598 dx_buff->len = buff_size; 599 dx_buff->pa = frag_pa; 600 dx_buff->is_mapped = 1U; 601 dx_buff->eop_index = 0xffffU; 602 603 frag_len -= buff_size; 604 buff_offset += buff_size; 605 606 ++ret; 607 } 608 } 609 610 first->eop_index = dx; 611 dx_buff->is_eop = 1U; 612 dx_buff->skb = skb; 613 goto exit; 614 615 mapping_error: 616 for (dx = ring->sw_tail; 617 ret > 0; 618 --ret, dx = aq_ring_next_dx(ring, dx)) { 619 dx_buff = &ring->buff_ring[dx]; 620 621 if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) && 622 !dx_buff->is_vlan && dx_buff->pa) { 623 if (unlikely(dx_buff->is_sop)) { 624 dma_unmap_single(aq_nic_get_dev(self), 625 dx_buff->pa, 626 dx_buff->len, 627 DMA_TO_DEVICE); 628 } else { 629 dma_unmap_page(aq_nic_get_dev(self), 630 dx_buff->pa, 631 dx_buff->len, 632 DMA_TO_DEVICE); 633 } 634 } 635 } 636 637 exit: 638 return ret; 639 } 640 641 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb) 642 { 643 unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs; 644 struct aq_ring_s *ring = NULL; 645 unsigned int frags = 0U; 646 int err = NETDEV_TX_OK; 647 unsigned int tc = 0U; 648 649 frags = skb_shinfo(skb)->nr_frags + 1; 650 651 ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)]; 652 653 if (frags > AQ_CFG_SKB_FRAGS_MAX) { 654 dev_kfree_skb_any(skb); 655 goto err_exit; 656 } 657 658 aq_ring_update_queue_state(ring); 659 660 if (self->aq_nic_cfg.priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) { 661 err = NETDEV_TX_BUSY; 662 goto err_exit; 663 } 664 665 /* Above status update may stop the queue. Check this. */ 666 if (__netif_subqueue_stopped(self->ndev, ring->idx)) { 667 err = NETDEV_TX_BUSY; 668 goto err_exit; 669 } 670 671 frags = aq_nic_map_skb(self, skb, ring); 672 673 if (likely(frags)) { 674 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw, 675 ring, frags); 676 } else { 677 err = NETDEV_TX_BUSY; 678 } 679 680 err_exit: 681 return err; 682 } 683 684 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self) 685 { 686 return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw); 687 } 688 689 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags) 690 { 691 int err = 0; 692 693 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags); 694 if (err < 0) 695 goto err_exit; 696 697 self->packet_filter = flags; 698 699 err_exit: 700 return err; 701 } 702 703 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev) 704 { 705 const struct aq_hw_ops *hw_ops = self->aq_hw_ops; 706 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 707 unsigned int packet_filter = ndev->flags; 708 struct netdev_hw_addr *ha = NULL; 709 unsigned int i = 0U; 710 int err = 0; 711 712 self->mc_list.count = 0; 713 if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 714 packet_filter |= IFF_PROMISC; 715 } else { 716 netdev_for_each_uc_addr(ha, ndev) { 717 ether_addr_copy(self->mc_list.ar[i++], ha->addr); 718 } 719 } 720 721 cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST); 722 if (cfg->is_mc_list_enabled) { 723 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 724 packet_filter |= IFF_ALLMULTI; 725 } else { 726 netdev_for_each_mc_addr(ha, ndev) { 727 ether_addr_copy(self->mc_list.ar[i++], 728 ha->addr); 729 } 730 } 731 } 732 733 if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) { 734 self->mc_list.count = i; 735 err = hw_ops->hw_multicast_list_set(self->aq_hw, 736 self->mc_list.ar, 737 self->mc_list.count); 738 if (err < 0) 739 return err; 740 } 741 742 return aq_nic_set_packet_filter(self, packet_filter); 743 } 744 745 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu) 746 { 747 self->aq_nic_cfg.mtu = new_mtu; 748 749 return 0; 750 } 751 752 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev) 753 { 754 return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr); 755 } 756 757 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self) 758 { 759 return self->link_status.mbps; 760 } 761 762 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p) 763 { 764 u32 *regs_buff = p; 765 int err = 0; 766 767 regs->version = 1; 768 769 err = self->aq_hw_ops->hw_get_regs(self->aq_hw, 770 self->aq_nic_cfg.aq_hw_caps, 771 regs_buff); 772 if (err < 0) 773 goto err_exit; 774 775 err_exit: 776 return err; 777 } 778 779 int aq_nic_get_regs_count(struct aq_nic_s *self) 780 { 781 return self->aq_nic_cfg.aq_hw_caps->mac_regs_count; 782 } 783 784 u64 *aq_nic_get_stats(struct aq_nic_s *self, u64 *data) 785 { 786 struct aq_vec_s *aq_vec = NULL; 787 struct aq_stats_s *stats; 788 unsigned int count = 0U; 789 unsigned int i = 0U; 790 791 if (self->aq_fw_ops->update_stats) { 792 mutex_lock(&self->fwreq_mutex); 793 self->aq_fw_ops->update_stats(self->aq_hw); 794 mutex_unlock(&self->fwreq_mutex); 795 } 796 stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 797 798 if (!stats) 799 goto err_exit; 800 801 data[i] = stats->uprc + stats->mprc + stats->bprc; 802 data[++i] = stats->uprc; 803 data[++i] = stats->mprc; 804 data[++i] = stats->bprc; 805 data[++i] = stats->erpt; 806 data[++i] = stats->uptc + stats->mptc + stats->bptc; 807 data[++i] = stats->uptc; 808 data[++i] = stats->mptc; 809 data[++i] = stats->bptc; 810 data[++i] = stats->ubrc; 811 data[++i] = stats->ubtc; 812 data[++i] = stats->mbrc; 813 data[++i] = stats->mbtc; 814 data[++i] = stats->bbrc; 815 data[++i] = stats->bbtc; 816 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc; 817 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc; 818 data[++i] = stats->dma_pkt_rc; 819 data[++i] = stats->dma_pkt_tc; 820 data[++i] = stats->dma_oct_rc; 821 data[++i] = stats->dma_oct_tc; 822 data[++i] = stats->dpc; 823 824 i++; 825 826 data += i; 827 828 for (i = 0U, aq_vec = self->aq_vec[0]; 829 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 830 data += count; 831 aq_vec_get_sw_stats(aq_vec, data, &count); 832 } 833 834 data += count; 835 836 err_exit:; 837 return data; 838 } 839 840 static void aq_nic_update_ndev_stats(struct aq_nic_s *self) 841 { 842 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 843 struct net_device *ndev = self->ndev; 844 845 ndev->stats.rx_packets = stats->dma_pkt_rc; 846 ndev->stats.rx_bytes = stats->dma_oct_rc; 847 ndev->stats.rx_errors = stats->erpr; 848 ndev->stats.rx_dropped = stats->dpc; 849 ndev->stats.tx_packets = stats->dma_pkt_tc; 850 ndev->stats.tx_bytes = stats->dma_oct_tc; 851 ndev->stats.tx_errors = stats->erpt; 852 ndev->stats.multicast = stats->mprc; 853 } 854 855 void aq_nic_get_link_ksettings(struct aq_nic_s *self, 856 struct ethtool_link_ksettings *cmd) 857 { 858 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 859 cmd->base.port = PORT_FIBRE; 860 else 861 cmd->base.port = PORT_TP; 862 /* This driver supports only 10G capable adapters, so DUPLEX_FULL */ 863 cmd->base.duplex = DUPLEX_FULL; 864 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg; 865 866 ethtool_link_ksettings_zero_link_mode(cmd, supported); 867 868 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G) 869 ethtool_link_ksettings_add_link_mode(cmd, supported, 870 10000baseT_Full); 871 872 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G) 873 ethtool_link_ksettings_add_link_mode(cmd, supported, 874 5000baseT_Full); 875 876 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS) 877 ethtool_link_ksettings_add_link_mode(cmd, supported, 878 2500baseT_Full); 879 880 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G) 881 ethtool_link_ksettings_add_link_mode(cmd, supported, 882 1000baseT_Full); 883 884 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M) 885 ethtool_link_ksettings_add_link_mode(cmd, supported, 886 100baseT_Full); 887 888 if (self->aq_nic_cfg.aq_hw_caps->flow_control) { 889 ethtool_link_ksettings_add_link_mode(cmd, supported, 890 Pause); 891 ethtool_link_ksettings_add_link_mode(cmd, supported, 892 Asym_Pause); 893 } 894 895 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 896 897 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 898 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 899 else 900 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 901 902 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 903 904 if (self->aq_nic_cfg.is_autoneg) 905 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 906 907 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G) 908 ethtool_link_ksettings_add_link_mode(cmd, advertising, 909 10000baseT_Full); 910 911 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G) 912 ethtool_link_ksettings_add_link_mode(cmd, advertising, 913 5000baseT_Full); 914 915 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS) 916 ethtool_link_ksettings_add_link_mode(cmd, advertising, 917 2500baseT_Full); 918 919 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G) 920 ethtool_link_ksettings_add_link_mode(cmd, advertising, 921 1000baseT_Full); 922 923 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M) 924 ethtool_link_ksettings_add_link_mode(cmd, advertising, 925 100baseT_Full); 926 927 if (self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX) 928 ethtool_link_ksettings_add_link_mode(cmd, advertising, 929 Pause); 930 931 /* Asym is when either RX or TX, but not both */ 932 if (!!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_TX) ^ 933 !!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX)) 934 ethtool_link_ksettings_add_link_mode(cmd, advertising, 935 Asym_Pause); 936 937 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 938 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 939 else 940 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 941 } 942 943 int aq_nic_set_link_ksettings(struct aq_nic_s *self, 944 const struct ethtool_link_ksettings *cmd) 945 { 946 u32 speed = 0U; 947 u32 rate = 0U; 948 int err = 0; 949 950 if (cmd->base.autoneg == AUTONEG_ENABLE) { 951 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk; 952 self->aq_nic_cfg.is_autoneg = true; 953 } else { 954 speed = cmd->base.speed; 955 956 switch (speed) { 957 case SPEED_100: 958 rate = AQ_NIC_RATE_100M; 959 break; 960 961 case SPEED_1000: 962 rate = AQ_NIC_RATE_1G; 963 break; 964 965 case SPEED_2500: 966 rate = AQ_NIC_RATE_2GS; 967 break; 968 969 case SPEED_5000: 970 rate = AQ_NIC_RATE_5G; 971 break; 972 973 case SPEED_10000: 974 rate = AQ_NIC_RATE_10G; 975 break; 976 977 default: 978 err = -1; 979 goto err_exit; 980 break; 981 } 982 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) { 983 err = -1; 984 goto err_exit; 985 } 986 987 self->aq_nic_cfg.is_autoneg = false; 988 } 989 990 mutex_lock(&self->fwreq_mutex); 991 err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate); 992 mutex_unlock(&self->fwreq_mutex); 993 if (err < 0) 994 goto err_exit; 995 996 self->aq_nic_cfg.link_speed_msk = rate; 997 998 err_exit: 999 return err; 1000 } 1001 1002 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self) 1003 { 1004 return &self->aq_nic_cfg; 1005 } 1006 1007 u32 aq_nic_get_fw_version(struct aq_nic_s *self) 1008 { 1009 u32 fw_version = 0U; 1010 1011 self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version); 1012 1013 return fw_version; 1014 } 1015 1016 int aq_nic_set_loopback(struct aq_nic_s *self) 1017 { 1018 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 1019 1020 if (!self->aq_hw_ops->hw_set_loopback || 1021 !self->aq_fw_ops->set_phyloopback) 1022 return -ENOTSUPP; 1023 1024 mutex_lock(&self->fwreq_mutex); 1025 self->aq_hw_ops->hw_set_loopback(self->aq_hw, 1026 AQ_HW_LOOPBACK_DMA_SYS, 1027 !!(cfg->priv_flags & 1028 BIT(AQ_HW_LOOPBACK_DMA_SYS))); 1029 1030 self->aq_hw_ops->hw_set_loopback(self->aq_hw, 1031 AQ_HW_LOOPBACK_PKT_SYS, 1032 !!(cfg->priv_flags & 1033 BIT(AQ_HW_LOOPBACK_PKT_SYS))); 1034 1035 self->aq_hw_ops->hw_set_loopback(self->aq_hw, 1036 AQ_HW_LOOPBACK_DMA_NET, 1037 !!(cfg->priv_flags & 1038 BIT(AQ_HW_LOOPBACK_DMA_NET))); 1039 1040 self->aq_fw_ops->set_phyloopback(self->aq_hw, 1041 AQ_HW_LOOPBACK_PHYINT_SYS, 1042 !!(cfg->priv_flags & 1043 BIT(AQ_HW_LOOPBACK_PHYINT_SYS))); 1044 1045 self->aq_fw_ops->set_phyloopback(self->aq_hw, 1046 AQ_HW_LOOPBACK_PHYEXT_SYS, 1047 !!(cfg->priv_flags & 1048 BIT(AQ_HW_LOOPBACK_PHYEXT_SYS))); 1049 mutex_unlock(&self->fwreq_mutex); 1050 1051 return 0; 1052 } 1053 1054 int aq_nic_stop(struct aq_nic_s *self) 1055 { 1056 struct aq_vec_s *aq_vec = NULL; 1057 unsigned int i = 0U; 1058 1059 netif_tx_disable(self->ndev); 1060 netif_carrier_off(self->ndev); 1061 1062 del_timer_sync(&self->service_timer); 1063 cancel_work_sync(&self->service_task); 1064 1065 self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK); 1066 1067 if (self->aq_nic_cfg.is_polling) 1068 del_timer_sync(&self->polling_timer); 1069 else 1070 aq_pci_func_free_irqs(self); 1071 1072 aq_ptp_irq_free(self); 1073 1074 for (i = 0U, aq_vec = self->aq_vec[0]; 1075 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 1076 aq_vec_stop(aq_vec); 1077 1078 aq_ptp_ring_stop(self); 1079 1080 return self->aq_hw_ops->hw_stop(self->aq_hw); 1081 } 1082 1083 void aq_nic_set_power(struct aq_nic_s *self) 1084 { 1085 if (self->power_state != AQ_HW_POWER_STATE_D0 || 1086 self->aq_hw->aq_nic_cfg->wol) 1087 if (likely(self->aq_fw_ops->set_power)) { 1088 mutex_lock(&self->fwreq_mutex); 1089 self->aq_fw_ops->set_power(self->aq_hw, 1090 self->power_state, 1091 self->ndev->dev_addr); 1092 mutex_unlock(&self->fwreq_mutex); 1093 } 1094 } 1095 1096 void aq_nic_deinit(struct aq_nic_s *self, bool link_down) 1097 { 1098 struct aq_vec_s *aq_vec = NULL; 1099 unsigned int i = 0U; 1100 1101 if (!self) 1102 goto err_exit; 1103 1104 for (i = 0U, aq_vec = self->aq_vec[0]; 1105 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 1106 aq_vec_deinit(aq_vec); 1107 1108 aq_ptp_unregister(self); 1109 aq_ptp_ring_deinit(self); 1110 aq_ptp_ring_free(self); 1111 aq_ptp_free(self); 1112 1113 if (likely(self->aq_fw_ops->deinit) && link_down) { 1114 mutex_lock(&self->fwreq_mutex); 1115 self->aq_fw_ops->deinit(self->aq_hw); 1116 mutex_unlock(&self->fwreq_mutex); 1117 } 1118 1119 err_exit:; 1120 } 1121 1122 void aq_nic_free_vectors(struct aq_nic_s *self) 1123 { 1124 unsigned int i = 0U; 1125 1126 if (!self) 1127 goto err_exit; 1128 1129 for (i = ARRAY_SIZE(self->aq_vec); i--;) { 1130 if (self->aq_vec[i]) { 1131 aq_vec_free(self->aq_vec[i]); 1132 self->aq_vec[i] = NULL; 1133 } 1134 } 1135 1136 err_exit:; 1137 } 1138 1139 void aq_nic_shutdown(struct aq_nic_s *self) 1140 { 1141 int err = 0; 1142 1143 if (!self->ndev) 1144 return; 1145 1146 rtnl_lock(); 1147 1148 netif_device_detach(self->ndev); 1149 1150 if (netif_running(self->ndev)) { 1151 err = aq_nic_stop(self); 1152 if (err < 0) 1153 goto err_exit; 1154 } 1155 aq_nic_deinit(self, !self->aq_hw->aq_nic_cfg->wol); 1156 aq_nic_set_power(self); 1157 1158 err_exit: 1159 rtnl_unlock(); 1160 } 1161 1162 u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type) 1163 { 1164 u8 location = 0xFF; 1165 u32 fltr_cnt; 1166 u32 n_bit; 1167 1168 switch (type) { 1169 case aq_rx_filter_ethertype: 1170 location = AQ_RX_LAST_LOC_FETHERT - AQ_RX_FIRST_LOC_FETHERT - 1171 self->aq_hw_rx_fltrs.fet_reserved_count; 1172 self->aq_hw_rx_fltrs.fet_reserved_count++; 1173 break; 1174 case aq_rx_filter_l3l4: 1175 fltr_cnt = AQ_RX_LAST_LOC_FL3L4 - AQ_RX_FIRST_LOC_FL3L4; 1176 n_bit = fltr_cnt - self->aq_hw_rx_fltrs.fl3l4.reserved_count; 1177 1178 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 |= BIT(n_bit); 1179 self->aq_hw_rx_fltrs.fl3l4.reserved_count++; 1180 location = n_bit; 1181 break; 1182 default: 1183 break; 1184 } 1185 1186 return location; 1187 } 1188 1189 void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type, 1190 u32 location) 1191 { 1192 switch (type) { 1193 case aq_rx_filter_ethertype: 1194 self->aq_hw_rx_fltrs.fet_reserved_count--; 1195 break; 1196 case aq_rx_filter_l3l4: 1197 self->aq_hw_rx_fltrs.fl3l4.reserved_count--; 1198 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 &= ~BIT(location); 1199 break; 1200 default: 1201 break; 1202 } 1203 } 1204