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 struct aq_vec_s *aq_vec = NULL; 269 unsigned int i = 0U; 270 271 for (i = 0U, aq_vec = self->aq_vec[0]; 272 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 273 aq_vec_isr(i, (void *)aq_vec); 274 275 mod_timer(&self->polling_timer, jiffies + 276 AQ_CFG_POLLING_TIMER_INTERVAL); 277 } 278 279 static int aq_nic_hw_prepare(struct aq_nic_s *self) 280 { 281 int err = 0; 282 283 err = self->aq_hw_ops->hw_soft_reset(self->aq_hw); 284 if (err) 285 goto exit; 286 287 err = self->aq_hw_ops->hw_prepare(self->aq_hw, &self->aq_fw_ops); 288 289 exit: 290 return err; 291 } 292 293 static bool aq_nic_is_valid_ether_addr(const u8 *addr) 294 { 295 /* Some engineering samples of Aquantia NICs are provisioned with a 296 * partially populated MAC, which is still invalid. 297 */ 298 return !(addr[0] == 0 && addr[1] == 0 && addr[2] == 0); 299 } 300 301 int aq_nic_ndev_register(struct aq_nic_s *self) 302 { 303 int err = 0; 304 305 if (!self->ndev) { 306 err = -EINVAL; 307 goto err_exit; 308 } 309 310 err = aq_nic_hw_prepare(self); 311 if (err) 312 goto err_exit; 313 314 #if IS_ENABLED(CONFIG_MACSEC) 315 aq_macsec_init(self); 316 #endif 317 318 mutex_lock(&self->fwreq_mutex); 319 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, 320 self->ndev->dev_addr); 321 mutex_unlock(&self->fwreq_mutex); 322 if (err) 323 goto err_exit; 324 325 if (!is_valid_ether_addr(self->ndev->dev_addr) || 326 !aq_nic_is_valid_ether_addr(self->ndev->dev_addr)) { 327 netdev_warn(self->ndev, "MAC is invalid, will use random."); 328 eth_hw_addr_random(self->ndev); 329 } 330 331 #if defined(AQ_CFG_MAC_ADDR_PERMANENT) 332 { 333 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT; 334 335 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent); 336 } 337 #endif 338 339 for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs; 340 self->aq_vecs++) { 341 self->aq_vec[self->aq_vecs] = 342 aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self)); 343 if (!self->aq_vec[self->aq_vecs]) { 344 err = -ENOMEM; 345 goto err_exit; 346 } 347 } 348 349 netif_carrier_off(self->ndev); 350 351 netif_tx_disable(self->ndev); 352 353 err = register_netdev(self->ndev); 354 if (err) 355 goto err_exit; 356 357 err_exit: 358 #if IS_ENABLED(CONFIG_MACSEC) 359 if (err) 360 aq_macsec_free(self); 361 #endif 362 return err; 363 } 364 365 void aq_nic_ndev_init(struct aq_nic_s *self) 366 { 367 const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps; 368 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg; 369 370 self->ndev->hw_features |= aq_hw_caps->hw_features; 371 self->ndev->features = aq_hw_caps->hw_features; 372 self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM | 373 NETIF_F_RXHASH | NETIF_F_SG | 374 NETIF_F_LRO | NETIF_F_TSO | NETIF_F_TSO6; 375 self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4; 376 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags; 377 self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 378 379 self->msg_enable = NETIF_MSG_DRV | NETIF_MSG_LINK; 380 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN; 381 self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN; 382 383 } 384 385 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx, 386 struct aq_ring_s *ring) 387 { 388 self->aq_ring_tx[idx] = ring; 389 } 390 391 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self) 392 { 393 return self->ndev; 394 } 395 396 int aq_nic_init(struct aq_nic_s *self) 397 { 398 struct aq_vec_s *aq_vec = NULL; 399 unsigned int i = 0U; 400 int err = 0; 401 402 self->power_state = AQ_HW_POWER_STATE_D0; 403 mutex_lock(&self->fwreq_mutex); 404 err = self->aq_hw_ops->hw_reset(self->aq_hw); 405 mutex_unlock(&self->fwreq_mutex); 406 if (err < 0) 407 goto err_exit; 408 /* Restore default settings */ 409 aq_nic_set_downshift(self, self->aq_nic_cfg.downshift_counter); 410 aq_nic_set_media_detect(self, self->aq_nic_cfg.is_media_detect ? 411 AQ_HW_MEDIA_DETECT_CNT : 0); 412 413 err = self->aq_hw_ops->hw_init(self->aq_hw, 414 aq_nic_get_ndev(self)->dev_addr); 415 if (err < 0) 416 goto err_exit; 417 418 if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ATLANTIC) && 419 self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) { 420 self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX; 421 err = aq_phy_init(self->aq_hw); 422 423 /* Disable the PTP on NICs where it's known to cause datapath 424 * problems. 425 * Ideally this should have been done by PHY provisioning, but 426 * many units have been shipped with enabled PTP block already. 427 */ 428 if (self->aq_nic_cfg.aq_hw_caps->quirks & AQ_NIC_QUIRK_BAD_PTP) 429 if (self->aq_hw->phy_id != HW_ATL_PHY_ID_MAX) 430 aq_phy_disable_ptp(self->aq_hw); 431 } 432 433 for (i = 0U; i < self->aq_vecs; i++) { 434 aq_vec = self->aq_vec[i]; 435 err = aq_vec_ring_alloc(aq_vec, self, i, 436 aq_nic_get_cfg(self)); 437 if (err) 438 goto err_exit; 439 440 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw); 441 } 442 443 if (aq_nic_get_cfg(self)->is_ptp) { 444 err = aq_ptp_init(self, self->irqvecs - 1); 445 if (err < 0) 446 goto err_exit; 447 448 err = aq_ptp_ring_alloc(self); 449 if (err < 0) 450 goto err_exit; 451 452 err = aq_ptp_ring_init(self); 453 if (err < 0) 454 goto err_exit; 455 } 456 457 netif_carrier_off(self->ndev); 458 459 err_exit: 460 return err; 461 } 462 463 int aq_nic_start(struct aq_nic_s *self) 464 { 465 struct aq_vec_s *aq_vec = NULL; 466 struct aq_nic_cfg_s *cfg; 467 unsigned int i = 0U; 468 int err = 0; 469 470 cfg = aq_nic_get_cfg(self); 471 472 err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw, 473 self->mc_list.ar, 474 self->mc_list.count); 475 if (err < 0) 476 goto err_exit; 477 478 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, 479 self->packet_filter); 480 if (err < 0) 481 goto err_exit; 482 483 for (i = 0U, aq_vec = self->aq_vec[0]; 484 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 485 err = aq_vec_start(aq_vec); 486 if (err < 0) 487 goto err_exit; 488 } 489 490 err = aq_ptp_ring_start(self); 491 if (err < 0) 492 goto err_exit; 493 494 aq_nic_set_loopback(self); 495 496 err = self->aq_hw_ops->hw_start(self->aq_hw); 497 if (err < 0) 498 goto err_exit; 499 500 err = aq_nic_update_interrupt_moderation_settings(self); 501 if (err) 502 goto err_exit; 503 504 INIT_WORK(&self->service_task, aq_nic_service_task); 505 506 timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0); 507 aq_nic_service_timer_cb(&self->service_timer); 508 509 if (cfg->is_polling) { 510 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0); 511 mod_timer(&self->polling_timer, jiffies + 512 AQ_CFG_POLLING_TIMER_INTERVAL); 513 } else { 514 for (i = 0U, aq_vec = self->aq_vec[0]; 515 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 516 err = aq_pci_func_alloc_irq(self, i, self->ndev->name, 517 aq_vec_isr, aq_vec, 518 aq_vec_get_affinity_mask(aq_vec)); 519 if (err < 0) 520 goto err_exit; 521 } 522 523 err = aq_ptp_irq_alloc(self); 524 if (err < 0) 525 goto err_exit; 526 527 if (cfg->link_irq_vec) { 528 int irqvec = pci_irq_vector(self->pdev, 529 cfg->link_irq_vec); 530 err = request_threaded_irq(irqvec, NULL, 531 aq_linkstate_threaded_isr, 532 IRQF_SHARED | IRQF_ONESHOT, 533 self->ndev->name, self); 534 if (err < 0) 535 goto err_exit; 536 self->msix_entry_mask |= (1 << cfg->link_irq_vec); 537 } 538 539 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw, 540 AQ_CFG_IRQ_MASK); 541 if (err < 0) 542 goto err_exit; 543 } 544 545 err = netif_set_real_num_tx_queues(self->ndev, 546 self->aq_vecs * cfg->tcs); 547 if (err < 0) 548 goto err_exit; 549 550 err = netif_set_real_num_rx_queues(self->ndev, 551 self->aq_vecs * cfg->tcs); 552 if (err < 0) 553 goto err_exit; 554 555 for (i = 0; i < cfg->tcs; i++) { 556 u16 offset = self->aq_vecs * i; 557 558 netdev_set_tc_queue(self->ndev, i, self->aq_vecs, offset); 559 } 560 netif_tx_start_all_queues(self->ndev); 561 562 err_exit: 563 return err; 564 } 565 566 unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb, 567 struct aq_ring_s *ring) 568 { 569 unsigned int nr_frags = skb_shinfo(skb)->nr_frags; 570 struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self); 571 struct device *dev = aq_nic_get_dev(self); 572 struct aq_ring_buff_s *first = NULL; 573 u8 ipver = ip_hdr(skb)->version; 574 struct aq_ring_buff_s *dx_buff; 575 bool need_context_tag = false; 576 unsigned int frag_count = 0U; 577 unsigned int ret = 0U; 578 unsigned int dx; 579 u8 l4proto = 0; 580 581 if (ipver == 4) 582 l4proto = ip_hdr(skb)->protocol; 583 else if (ipver == 6) 584 l4proto = ipv6_hdr(skb)->nexthdr; 585 586 dx = ring->sw_tail; 587 dx_buff = &ring->buff_ring[dx]; 588 dx_buff->flags = 0U; 589 590 if (unlikely(skb_is_gso(skb))) { 591 dx_buff->mss = skb_shinfo(skb)->gso_size; 592 if (l4proto == IPPROTO_TCP) { 593 dx_buff->is_gso_tcp = 1U; 594 dx_buff->len_l4 = tcp_hdrlen(skb); 595 } else if (l4proto == IPPROTO_UDP) { 596 dx_buff->is_gso_udp = 1U; 597 dx_buff->len_l4 = sizeof(struct udphdr); 598 /* UDP GSO Hardware does not replace packet length. */ 599 udp_hdr(skb)->len = htons(dx_buff->mss + 600 dx_buff->len_l4); 601 } else { 602 WARN_ONCE(true, "Bad GSO mode"); 603 goto exit; 604 } 605 dx_buff->len_pkt = skb->len; 606 dx_buff->len_l2 = ETH_HLEN; 607 dx_buff->len_l3 = skb_network_header_len(skb); 608 dx_buff->eop_index = 0xffffU; 609 dx_buff->is_ipv6 = (ipver == 6); 610 need_context_tag = true; 611 } 612 613 if (cfg->is_vlan_tx_insert && skb_vlan_tag_present(skb)) { 614 dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb); 615 dx_buff->len_pkt = skb->len; 616 dx_buff->is_vlan = 1U; 617 need_context_tag = true; 618 } 619 620 if (need_context_tag) { 621 dx = aq_ring_next_dx(ring, dx); 622 dx_buff = &ring->buff_ring[dx]; 623 dx_buff->flags = 0U; 624 ++ret; 625 } 626 627 dx_buff->len = skb_headlen(skb); 628 dx_buff->pa = dma_map_single(dev, 629 skb->data, 630 dx_buff->len, 631 DMA_TO_DEVICE); 632 633 if (unlikely(dma_mapping_error(dev, dx_buff->pa))) { 634 ret = 0; 635 goto exit; 636 } 637 638 first = dx_buff; 639 dx_buff->len_pkt = skb->len; 640 dx_buff->is_sop = 1U; 641 dx_buff->is_mapped = 1U; 642 ++ret; 643 644 if (skb->ip_summed == CHECKSUM_PARTIAL) { 645 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol); 646 dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP); 647 dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP); 648 } 649 650 for (; nr_frags--; ++frag_count) { 651 unsigned int frag_len = 0U; 652 unsigned int buff_offset = 0U; 653 unsigned int buff_size = 0U; 654 dma_addr_t frag_pa; 655 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count]; 656 657 frag_len = skb_frag_size(frag); 658 659 while (frag_len) { 660 if (frag_len > AQ_CFG_TX_FRAME_MAX) 661 buff_size = AQ_CFG_TX_FRAME_MAX; 662 else 663 buff_size = frag_len; 664 665 frag_pa = skb_frag_dma_map(dev, 666 frag, 667 buff_offset, 668 buff_size, 669 DMA_TO_DEVICE); 670 671 if (unlikely(dma_mapping_error(dev, 672 frag_pa))) 673 goto mapping_error; 674 675 dx = aq_ring_next_dx(ring, dx); 676 dx_buff = &ring->buff_ring[dx]; 677 678 dx_buff->flags = 0U; 679 dx_buff->len = buff_size; 680 dx_buff->pa = frag_pa; 681 dx_buff->is_mapped = 1U; 682 dx_buff->eop_index = 0xffffU; 683 684 frag_len -= buff_size; 685 buff_offset += buff_size; 686 687 ++ret; 688 } 689 } 690 691 first->eop_index = dx; 692 dx_buff->is_eop = 1U; 693 dx_buff->skb = skb; 694 goto exit; 695 696 mapping_error: 697 for (dx = ring->sw_tail; 698 ret > 0; 699 --ret, dx = aq_ring_next_dx(ring, dx)) { 700 dx_buff = &ring->buff_ring[dx]; 701 702 if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) && 703 !dx_buff->is_vlan && dx_buff->pa) { 704 if (unlikely(dx_buff->is_sop)) { 705 dma_unmap_single(dev, 706 dx_buff->pa, 707 dx_buff->len, 708 DMA_TO_DEVICE); 709 } else { 710 dma_unmap_page(dev, 711 dx_buff->pa, 712 dx_buff->len, 713 DMA_TO_DEVICE); 714 } 715 } 716 } 717 718 exit: 719 return ret; 720 } 721 722 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb) 723 { 724 struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self); 725 unsigned int vec = skb->queue_mapping % cfg->vecs; 726 unsigned int tc = skb->queue_mapping / cfg->vecs; 727 struct aq_ring_s *ring = NULL; 728 unsigned int frags = 0U; 729 int err = NETDEV_TX_OK; 730 731 frags = skb_shinfo(skb)->nr_frags + 1; 732 733 ring = self->aq_ring_tx[AQ_NIC_CFG_TCVEC2RING(cfg, tc, vec)]; 734 735 if (frags > AQ_CFG_SKB_FRAGS_MAX) { 736 dev_kfree_skb_any(skb); 737 goto err_exit; 738 } 739 740 aq_ring_update_queue_state(ring); 741 742 if (cfg->priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) { 743 err = NETDEV_TX_BUSY; 744 goto err_exit; 745 } 746 747 /* Above status update may stop the queue. Check this. */ 748 if (__netif_subqueue_stopped(self->ndev, 749 AQ_NIC_RING2QMAP(self, ring->idx))) { 750 err = NETDEV_TX_BUSY; 751 goto err_exit; 752 } 753 754 frags = aq_nic_map_skb(self, skb, ring); 755 756 if (likely(frags)) { 757 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw, 758 ring, frags); 759 } else { 760 err = NETDEV_TX_BUSY; 761 } 762 763 err_exit: 764 return err; 765 } 766 767 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self) 768 { 769 return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw); 770 } 771 772 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags) 773 { 774 int err = 0; 775 776 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags); 777 if (err < 0) 778 goto err_exit; 779 780 self->packet_filter = flags; 781 782 err_exit: 783 return err; 784 } 785 786 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev) 787 { 788 const struct aq_hw_ops *hw_ops = self->aq_hw_ops; 789 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 790 unsigned int packet_filter = ndev->flags; 791 struct netdev_hw_addr *ha = NULL; 792 unsigned int i = 0U; 793 int err = 0; 794 795 self->mc_list.count = 0; 796 if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 797 packet_filter |= IFF_PROMISC; 798 } else { 799 netdev_for_each_uc_addr(ha, ndev) { 800 ether_addr_copy(self->mc_list.ar[i++], ha->addr); 801 } 802 } 803 804 cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST); 805 if (cfg->is_mc_list_enabled) { 806 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 807 packet_filter |= IFF_ALLMULTI; 808 } else { 809 netdev_for_each_mc_addr(ha, ndev) { 810 ether_addr_copy(self->mc_list.ar[i++], 811 ha->addr); 812 } 813 } 814 } 815 816 if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) { 817 self->mc_list.count = i; 818 err = hw_ops->hw_multicast_list_set(self->aq_hw, 819 self->mc_list.ar, 820 self->mc_list.count); 821 if (err < 0) 822 return err; 823 } 824 825 return aq_nic_set_packet_filter(self, packet_filter); 826 } 827 828 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu) 829 { 830 self->aq_nic_cfg.mtu = new_mtu; 831 832 return 0; 833 } 834 835 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev) 836 { 837 return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr); 838 } 839 840 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self) 841 { 842 return self->link_status.mbps; 843 } 844 845 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p) 846 { 847 u32 *regs_buff = p; 848 int err = 0; 849 850 if (unlikely(!self->aq_hw_ops->hw_get_regs)) 851 return -EOPNOTSUPP; 852 853 regs->version = 1; 854 855 err = self->aq_hw_ops->hw_get_regs(self->aq_hw, 856 self->aq_nic_cfg.aq_hw_caps, 857 regs_buff); 858 if (err < 0) 859 goto err_exit; 860 861 err_exit: 862 return err; 863 } 864 865 int aq_nic_get_regs_count(struct aq_nic_s *self) 866 { 867 if (unlikely(!self->aq_hw_ops->hw_get_regs)) 868 return 0; 869 870 return self->aq_nic_cfg.aq_hw_caps->mac_regs_count; 871 } 872 873 u64 *aq_nic_get_stats(struct aq_nic_s *self, u64 *data) 874 { 875 struct aq_vec_s *aq_vec = NULL; 876 struct aq_stats_s *stats; 877 unsigned int count = 0U; 878 unsigned int i = 0U; 879 unsigned int tc; 880 881 if (self->aq_fw_ops->update_stats) { 882 mutex_lock(&self->fwreq_mutex); 883 self->aq_fw_ops->update_stats(self->aq_hw); 884 mutex_unlock(&self->fwreq_mutex); 885 } 886 stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 887 888 if (!stats) 889 goto err_exit; 890 891 data[i] = stats->uprc + stats->mprc + stats->bprc; 892 data[++i] = stats->uprc; 893 data[++i] = stats->mprc; 894 data[++i] = stats->bprc; 895 data[++i] = stats->erpt; 896 data[++i] = stats->uptc + stats->mptc + stats->bptc; 897 data[++i] = stats->uptc; 898 data[++i] = stats->mptc; 899 data[++i] = stats->bptc; 900 data[++i] = stats->ubrc; 901 data[++i] = stats->ubtc; 902 data[++i] = stats->mbrc; 903 data[++i] = stats->mbtc; 904 data[++i] = stats->bbrc; 905 data[++i] = stats->bbtc; 906 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc; 907 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc; 908 data[++i] = stats->dma_pkt_rc; 909 data[++i] = stats->dma_pkt_tc; 910 data[++i] = stats->dma_oct_rc; 911 data[++i] = stats->dma_oct_tc; 912 data[++i] = stats->dpc; 913 914 i++; 915 916 data += i; 917 918 for (tc = 0U; tc < self->aq_nic_cfg.tcs; tc++) { 919 for (i = 0U, aq_vec = self->aq_vec[0]; 920 aq_vec && self->aq_vecs > i; 921 ++i, aq_vec = self->aq_vec[i]) { 922 data += count; 923 count = aq_vec_get_sw_stats(aq_vec, tc, data); 924 } 925 } 926 927 data += count; 928 929 err_exit: 930 return data; 931 } 932 933 static void aq_nic_update_ndev_stats(struct aq_nic_s *self) 934 { 935 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 936 struct net_device *ndev = self->ndev; 937 938 ndev->stats.rx_packets = stats->dma_pkt_rc; 939 ndev->stats.rx_bytes = stats->dma_oct_rc; 940 ndev->stats.rx_errors = stats->erpr; 941 ndev->stats.rx_dropped = stats->dpc; 942 ndev->stats.tx_packets = stats->dma_pkt_tc; 943 ndev->stats.tx_bytes = stats->dma_oct_tc; 944 ndev->stats.tx_errors = stats->erpt; 945 ndev->stats.multicast = stats->mprc; 946 } 947 948 void aq_nic_get_link_ksettings(struct aq_nic_s *self, 949 struct ethtool_link_ksettings *cmd) 950 { 951 u32 lp_link_speed_msk; 952 953 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 954 cmd->base.port = PORT_FIBRE; 955 else 956 cmd->base.port = PORT_TP; 957 958 cmd->base.duplex = DUPLEX_UNKNOWN; 959 if (self->link_status.mbps) 960 cmd->base.duplex = self->link_status.full_duplex ? 961 DUPLEX_FULL : DUPLEX_HALF; 962 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg; 963 964 ethtool_link_ksettings_zero_link_mode(cmd, supported); 965 966 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G) 967 ethtool_link_ksettings_add_link_mode(cmd, supported, 968 10000baseT_Full); 969 970 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G) 971 ethtool_link_ksettings_add_link_mode(cmd, supported, 972 5000baseT_Full); 973 974 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2G5) 975 ethtool_link_ksettings_add_link_mode(cmd, supported, 976 2500baseT_Full); 977 978 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G) 979 ethtool_link_ksettings_add_link_mode(cmd, supported, 980 1000baseT_Full); 981 982 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G_HALF) 983 ethtool_link_ksettings_add_link_mode(cmd, supported, 984 1000baseT_Half); 985 986 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M) 987 ethtool_link_ksettings_add_link_mode(cmd, supported, 988 100baseT_Full); 989 990 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M_HALF) 991 ethtool_link_ksettings_add_link_mode(cmd, supported, 992 100baseT_Half); 993 994 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M) 995 ethtool_link_ksettings_add_link_mode(cmd, supported, 996 10baseT_Full); 997 998 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M_HALF) 999 ethtool_link_ksettings_add_link_mode(cmd, supported, 1000 10baseT_Half); 1001 1002 if (self->aq_nic_cfg.aq_hw_caps->flow_control) { 1003 ethtool_link_ksettings_add_link_mode(cmd, supported, 1004 Pause); 1005 ethtool_link_ksettings_add_link_mode(cmd, supported, 1006 Asym_Pause); 1007 } 1008 1009 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 1010 1011 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 1012 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 1013 else 1014 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 1015 1016 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 1017 1018 if (self->aq_nic_cfg.is_autoneg) 1019 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 1020 1021 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G) 1022 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1023 10000baseT_Full); 1024 1025 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G) 1026 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1027 5000baseT_Full); 1028 1029 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2G5) 1030 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1031 2500baseT_Full); 1032 1033 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G) 1034 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1035 1000baseT_Full); 1036 1037 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G_HALF) 1038 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1039 1000baseT_Half); 1040 1041 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M) 1042 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1043 100baseT_Full); 1044 1045 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M_HALF) 1046 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1047 100baseT_Half); 1048 1049 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M) 1050 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1051 10baseT_Full); 1052 1053 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M_HALF) 1054 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1055 10baseT_Half); 1056 1057 if (self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX) 1058 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1059 Pause); 1060 1061 /* Asym is when either RX or TX, but not both */ 1062 if (!!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_TX) ^ 1063 !!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX)) 1064 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1065 Asym_Pause); 1066 1067 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 1068 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 1069 else 1070 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 1071 1072 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 1073 lp_link_speed_msk = self->aq_hw->aq_link_status.lp_link_speed_msk; 1074 1075 if (lp_link_speed_msk & AQ_NIC_RATE_10G) 1076 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1077 10000baseT_Full); 1078 1079 if (lp_link_speed_msk & AQ_NIC_RATE_5G) 1080 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1081 5000baseT_Full); 1082 1083 if (lp_link_speed_msk & AQ_NIC_RATE_2G5) 1084 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1085 2500baseT_Full); 1086 1087 if (lp_link_speed_msk & AQ_NIC_RATE_1G) 1088 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1089 1000baseT_Full); 1090 1091 if (lp_link_speed_msk & AQ_NIC_RATE_1G_HALF) 1092 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1093 1000baseT_Half); 1094 1095 if (lp_link_speed_msk & AQ_NIC_RATE_100M) 1096 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1097 100baseT_Full); 1098 1099 if (lp_link_speed_msk & AQ_NIC_RATE_100M_HALF) 1100 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1101 100baseT_Half); 1102 1103 if (lp_link_speed_msk & AQ_NIC_RATE_10M) 1104 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1105 10baseT_Full); 1106 1107 if (lp_link_speed_msk & AQ_NIC_RATE_10M_HALF) 1108 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1109 10baseT_Half); 1110 1111 if (self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX) 1112 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1113 Pause); 1114 if (!!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_TX) ^ 1115 !!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX)) 1116 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, 1117 Asym_Pause); 1118 } 1119 1120 int aq_nic_set_link_ksettings(struct aq_nic_s *self, 1121 const struct ethtool_link_ksettings *cmd) 1122 { 1123 int fduplex = (cmd->base.duplex == DUPLEX_FULL); 1124 u32 speed = cmd->base.speed; 1125 u32 rate = 0U; 1126 int err = 0; 1127 1128 if (!fduplex && speed > SPEED_1000) { 1129 err = -EINVAL; 1130 goto err_exit; 1131 } 1132 1133 if (cmd->base.autoneg == AUTONEG_ENABLE) { 1134 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk; 1135 self->aq_nic_cfg.is_autoneg = true; 1136 } else { 1137 switch (speed) { 1138 case SPEED_10: 1139 rate = fduplex ? AQ_NIC_RATE_10M : AQ_NIC_RATE_10M_HALF; 1140 break; 1141 1142 case SPEED_100: 1143 rate = fduplex ? AQ_NIC_RATE_100M 1144 : AQ_NIC_RATE_100M_HALF; 1145 break; 1146 1147 case SPEED_1000: 1148 rate = fduplex ? AQ_NIC_RATE_1G : AQ_NIC_RATE_1G_HALF; 1149 break; 1150 1151 case SPEED_2500: 1152 rate = AQ_NIC_RATE_2G5; 1153 break; 1154 1155 case SPEED_5000: 1156 rate = AQ_NIC_RATE_5G; 1157 break; 1158 1159 case SPEED_10000: 1160 rate = AQ_NIC_RATE_10G; 1161 break; 1162 1163 default: 1164 err = -1; 1165 goto err_exit; 1166 } 1167 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) { 1168 err = -1; 1169 goto err_exit; 1170 } 1171 1172 self->aq_nic_cfg.is_autoneg = false; 1173 } 1174 1175 mutex_lock(&self->fwreq_mutex); 1176 err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate); 1177 mutex_unlock(&self->fwreq_mutex); 1178 if (err < 0) 1179 goto err_exit; 1180 1181 self->aq_nic_cfg.link_speed_msk = rate; 1182 1183 err_exit: 1184 return err; 1185 } 1186 1187 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self) 1188 { 1189 return &self->aq_nic_cfg; 1190 } 1191 1192 u32 aq_nic_get_fw_version(struct aq_nic_s *self) 1193 { 1194 return self->aq_hw_ops->hw_get_fw_version(self->aq_hw); 1195 } 1196 1197 int aq_nic_set_loopback(struct aq_nic_s *self) 1198 { 1199 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 1200 1201 if (!self->aq_hw_ops->hw_set_loopback || 1202 !self->aq_fw_ops->set_phyloopback) 1203 return -EOPNOTSUPP; 1204 1205 mutex_lock(&self->fwreq_mutex); 1206 self->aq_hw_ops->hw_set_loopback(self->aq_hw, 1207 AQ_HW_LOOPBACK_DMA_SYS, 1208 !!(cfg->priv_flags & 1209 BIT(AQ_HW_LOOPBACK_DMA_SYS))); 1210 1211 self->aq_hw_ops->hw_set_loopback(self->aq_hw, 1212 AQ_HW_LOOPBACK_PKT_SYS, 1213 !!(cfg->priv_flags & 1214 BIT(AQ_HW_LOOPBACK_PKT_SYS))); 1215 1216 self->aq_hw_ops->hw_set_loopback(self->aq_hw, 1217 AQ_HW_LOOPBACK_DMA_NET, 1218 !!(cfg->priv_flags & 1219 BIT(AQ_HW_LOOPBACK_DMA_NET))); 1220 1221 self->aq_fw_ops->set_phyloopback(self->aq_hw, 1222 AQ_HW_LOOPBACK_PHYINT_SYS, 1223 !!(cfg->priv_flags & 1224 BIT(AQ_HW_LOOPBACK_PHYINT_SYS))); 1225 1226 self->aq_fw_ops->set_phyloopback(self->aq_hw, 1227 AQ_HW_LOOPBACK_PHYEXT_SYS, 1228 !!(cfg->priv_flags & 1229 BIT(AQ_HW_LOOPBACK_PHYEXT_SYS))); 1230 mutex_unlock(&self->fwreq_mutex); 1231 1232 return 0; 1233 } 1234 1235 int aq_nic_stop(struct aq_nic_s *self) 1236 { 1237 struct aq_vec_s *aq_vec = NULL; 1238 unsigned int i = 0U; 1239 1240 netif_tx_disable(self->ndev); 1241 netif_carrier_off(self->ndev); 1242 1243 del_timer_sync(&self->service_timer); 1244 cancel_work_sync(&self->service_task); 1245 1246 self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK); 1247 1248 if (self->aq_nic_cfg.is_polling) 1249 del_timer_sync(&self->polling_timer); 1250 else 1251 aq_pci_func_free_irqs(self); 1252 1253 aq_ptp_irq_free(self); 1254 1255 for (i = 0U, aq_vec = self->aq_vec[0]; 1256 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 1257 aq_vec_stop(aq_vec); 1258 1259 aq_ptp_ring_stop(self); 1260 1261 return self->aq_hw_ops->hw_stop(self->aq_hw); 1262 } 1263 1264 void aq_nic_set_power(struct aq_nic_s *self) 1265 { 1266 if (self->power_state != AQ_HW_POWER_STATE_D0 || 1267 self->aq_hw->aq_nic_cfg->wol) 1268 if (likely(self->aq_fw_ops->set_power)) { 1269 mutex_lock(&self->fwreq_mutex); 1270 self->aq_fw_ops->set_power(self->aq_hw, 1271 self->power_state, 1272 self->ndev->dev_addr); 1273 mutex_unlock(&self->fwreq_mutex); 1274 } 1275 } 1276 1277 void aq_nic_deinit(struct aq_nic_s *self, bool link_down) 1278 { 1279 struct aq_vec_s *aq_vec = NULL; 1280 unsigned int i = 0U; 1281 1282 if (!self) 1283 goto err_exit; 1284 1285 for (i = 0U; i < self->aq_vecs; i++) { 1286 aq_vec = self->aq_vec[i]; 1287 aq_vec_deinit(aq_vec); 1288 aq_vec_ring_free(aq_vec); 1289 } 1290 1291 aq_ptp_unregister(self); 1292 aq_ptp_ring_deinit(self); 1293 aq_ptp_ring_free(self); 1294 aq_ptp_free(self); 1295 1296 if (likely(self->aq_fw_ops->deinit) && link_down) { 1297 mutex_lock(&self->fwreq_mutex); 1298 self->aq_fw_ops->deinit(self->aq_hw); 1299 mutex_unlock(&self->fwreq_mutex); 1300 } 1301 1302 err_exit:; 1303 } 1304 1305 void aq_nic_free_vectors(struct aq_nic_s *self) 1306 { 1307 unsigned int i = 0U; 1308 1309 if (!self) 1310 goto err_exit; 1311 1312 for (i = ARRAY_SIZE(self->aq_vec); i--;) { 1313 if (self->aq_vec[i]) { 1314 aq_vec_free(self->aq_vec[i]); 1315 self->aq_vec[i] = NULL; 1316 } 1317 } 1318 1319 err_exit:; 1320 } 1321 1322 int aq_nic_realloc_vectors(struct aq_nic_s *self) 1323 { 1324 struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self); 1325 1326 aq_nic_free_vectors(self); 1327 1328 for (self->aq_vecs = 0; self->aq_vecs < cfg->vecs; self->aq_vecs++) { 1329 self->aq_vec[self->aq_vecs] = aq_vec_alloc(self, self->aq_vecs, 1330 cfg); 1331 if (unlikely(!self->aq_vec[self->aq_vecs])) 1332 return -ENOMEM; 1333 } 1334 1335 return 0; 1336 } 1337 1338 void aq_nic_shutdown(struct aq_nic_s *self) 1339 { 1340 int err = 0; 1341 1342 if (!self->ndev) 1343 return; 1344 1345 rtnl_lock(); 1346 1347 netif_device_detach(self->ndev); 1348 1349 if (netif_running(self->ndev)) { 1350 err = aq_nic_stop(self); 1351 if (err < 0) 1352 goto err_exit; 1353 } 1354 aq_nic_deinit(self, !self->aq_hw->aq_nic_cfg->wol); 1355 aq_nic_set_power(self); 1356 1357 err_exit: 1358 rtnl_unlock(); 1359 } 1360 1361 u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type) 1362 { 1363 u8 location = 0xFF; 1364 u32 fltr_cnt; 1365 u32 n_bit; 1366 1367 switch (type) { 1368 case aq_rx_filter_ethertype: 1369 location = AQ_RX_LAST_LOC_FETHERT - AQ_RX_FIRST_LOC_FETHERT - 1370 self->aq_hw_rx_fltrs.fet_reserved_count; 1371 self->aq_hw_rx_fltrs.fet_reserved_count++; 1372 break; 1373 case aq_rx_filter_l3l4: 1374 fltr_cnt = AQ_RX_LAST_LOC_FL3L4 - AQ_RX_FIRST_LOC_FL3L4; 1375 n_bit = fltr_cnt - self->aq_hw_rx_fltrs.fl3l4.reserved_count; 1376 1377 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 |= BIT(n_bit); 1378 self->aq_hw_rx_fltrs.fl3l4.reserved_count++; 1379 location = n_bit; 1380 break; 1381 default: 1382 break; 1383 } 1384 1385 return location; 1386 } 1387 1388 void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type, 1389 u32 location) 1390 { 1391 switch (type) { 1392 case aq_rx_filter_ethertype: 1393 self->aq_hw_rx_fltrs.fet_reserved_count--; 1394 break; 1395 case aq_rx_filter_l3l4: 1396 self->aq_hw_rx_fltrs.fl3l4.reserved_count--; 1397 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 &= ~BIT(location); 1398 break; 1399 default: 1400 break; 1401 } 1402 } 1403 1404 int aq_nic_set_downshift(struct aq_nic_s *self, int val) 1405 { 1406 int err = 0; 1407 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 1408 1409 if (!self->aq_fw_ops->set_downshift) 1410 return -EOPNOTSUPP; 1411 1412 if (val > 15) { 1413 netdev_err(self->ndev, "downshift counter should be <= 15\n"); 1414 return -EINVAL; 1415 } 1416 cfg->downshift_counter = val; 1417 1418 mutex_lock(&self->fwreq_mutex); 1419 err = self->aq_fw_ops->set_downshift(self->aq_hw, cfg->downshift_counter); 1420 mutex_unlock(&self->fwreq_mutex); 1421 1422 return err; 1423 } 1424 1425 int aq_nic_set_media_detect(struct aq_nic_s *self, int val) 1426 { 1427 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 1428 int err = 0; 1429 1430 if (!self->aq_fw_ops->set_media_detect) 1431 return -EOPNOTSUPP; 1432 1433 if (val > 0 && val != AQ_HW_MEDIA_DETECT_CNT) { 1434 netdev_err(self->ndev, "EDPD on this device could have only fixed value of %d\n", 1435 AQ_HW_MEDIA_DETECT_CNT); 1436 return -EINVAL; 1437 } 1438 1439 mutex_lock(&self->fwreq_mutex); 1440 err = self->aq_fw_ops->set_media_detect(self->aq_hw, !!val); 1441 mutex_unlock(&self->fwreq_mutex); 1442 1443 /* msecs plays no role - configuration is always fixed in PHY */ 1444 if (!err) 1445 cfg->is_media_detect = !!val; 1446 1447 return err; 1448 } 1449 1450 int aq_nic_setup_tc_mqprio(struct aq_nic_s *self, u32 tcs, u8 *prio_tc_map) 1451 { 1452 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 1453 const unsigned int prev_vecs = cfg->vecs; 1454 bool ndev_running; 1455 int err = 0; 1456 int i; 1457 1458 /* if already the same configuration or 1459 * disable request (tcs is 0) and we already is disabled 1460 */ 1461 if (tcs == cfg->tcs || (tcs == 0 && !cfg->is_qos)) 1462 return 0; 1463 1464 ndev_running = netif_running(self->ndev); 1465 if (ndev_running) 1466 dev_close(self->ndev); 1467 1468 cfg->tcs = tcs; 1469 if (cfg->tcs == 0) 1470 cfg->tcs = 1; 1471 if (prio_tc_map) 1472 memcpy(cfg->prio_tc_map, prio_tc_map, sizeof(cfg->prio_tc_map)); 1473 else 1474 for (i = 0; i < sizeof(cfg->prio_tc_map); i++) 1475 cfg->prio_tc_map[i] = cfg->tcs * i / 8; 1476 1477 cfg->is_qos = !!tcs; 1478 cfg->is_ptp = (cfg->tcs <= AQ_HW_PTP_TC); 1479 if (!cfg->is_ptp) 1480 netdev_warn(self->ndev, "%s\n", 1481 "PTP is auto disabled due to requested TC count."); 1482 1483 netdev_set_num_tc(self->ndev, cfg->tcs); 1484 1485 /* Changing the number of TCs might change the number of vectors */ 1486 aq_nic_cfg_update_num_vecs(self); 1487 if (prev_vecs != cfg->vecs) { 1488 err = aq_nic_realloc_vectors(self); 1489 if (err) 1490 goto err_exit; 1491 } 1492 1493 if (ndev_running) 1494 err = dev_open(self->ndev, NULL); 1495 1496 err_exit: 1497 return err; 1498 } 1499 1500 int aq_nic_setup_tc_max_rate(struct aq_nic_s *self, const unsigned int tc, 1501 const u32 max_rate) 1502 { 1503 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 1504 1505 if (tc >= AQ_CFG_TCS_MAX) 1506 return -EINVAL; 1507 1508 if (max_rate && max_rate < 10) { 1509 netdev_warn(self->ndev, 1510 "Setting %s to the minimum usable value of %dMbps.\n", 1511 "max rate", 10); 1512 cfg->tc_max_rate[tc] = 10; 1513 } else { 1514 cfg->tc_max_rate[tc] = max_rate; 1515 } 1516 1517 return 0; 1518 } 1519 1520 int aq_nic_setup_tc_min_rate(struct aq_nic_s *self, const unsigned int tc, 1521 const u32 min_rate) 1522 { 1523 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; 1524 1525 if (tc >= AQ_CFG_TCS_MAX) 1526 return -EINVAL; 1527 1528 if (min_rate) 1529 set_bit(tc, &cfg->tc_min_rate_msk); 1530 else 1531 clear_bit(tc, &cfg->tc_min_rate_msk); 1532 1533 if (min_rate && min_rate < 20) { 1534 netdev_warn(self->ndev, 1535 "Setting %s to the minimum usable value of %dMbps.\n", 1536 "min rate", 20); 1537 cfg->tc_min_rate[tc] = 20; 1538 } else { 1539 cfg->tc_min_rate[tc] = min_rate; 1540 } 1541 1542 return 0; 1543 } 1544