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_max, AQ_CFG_RXDS_DEF); 93 cfg->txds = min(cfg->aq_hw_caps->txds_max, 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->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 u32 fc = 0; 128 129 if (err) 130 return err; 131 132 if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) { 133 pr_info("%s: link change old %d new %d\n", 134 AQ_CFG_DRV_NAME, self->link_status.mbps, 135 self->aq_hw->aq_link_status.mbps); 136 aq_nic_update_interrupt_moderation_settings(self); 137 138 /* Driver has to update flow control settings on RX block 139 * on any link event. 140 * We should query FW whether it negotiated FC. 141 */ 142 if (self->aq_fw_ops->get_flow_control) 143 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc); 144 if (self->aq_hw_ops->hw_set_fc) 145 self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0); 146 } 147 148 self->link_status = self->aq_hw->aq_link_status; 149 if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) { 150 aq_utils_obj_set(&self->flags, 151 AQ_NIC_FLAG_STARTED); 152 aq_utils_obj_clear(&self->flags, 153 AQ_NIC_LINK_DOWN); 154 netif_carrier_on(self->ndev); 155 netif_tx_wake_all_queues(self->ndev); 156 } 157 if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) { 158 netif_carrier_off(self->ndev); 159 netif_tx_disable(self->ndev); 160 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN); 161 } 162 return 0; 163 } 164 165 static void aq_nic_service_timer_cb(struct timer_list *t) 166 { 167 struct aq_nic_s *self = from_timer(self, t, service_timer); 168 int ctimer = AQ_CFG_SERVICE_TIMER_INTERVAL; 169 int err = 0; 170 171 if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY)) 172 goto err_exit; 173 174 err = aq_nic_update_link_status(self); 175 if (err) 176 goto err_exit; 177 178 if (self->aq_fw_ops->update_stats) 179 self->aq_fw_ops->update_stats(self->aq_hw); 180 181 aq_nic_update_ndev_stats(self); 182 183 /* If no link - use faster timer rate to detect link up asap */ 184 if (!netif_carrier_ok(self->ndev)) 185 ctimer = max(ctimer / 2, 1); 186 187 err_exit: 188 mod_timer(&self->service_timer, jiffies + ctimer); 189 } 190 191 static void aq_nic_polling_timer_cb(struct timer_list *t) 192 { 193 struct aq_nic_s *self = from_timer(self, t, polling_timer); 194 struct aq_vec_s *aq_vec = NULL; 195 unsigned int i = 0U; 196 197 for (i = 0U, aq_vec = self->aq_vec[0]; 198 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 199 aq_vec_isr(i, (void *)aq_vec); 200 201 mod_timer(&self->polling_timer, jiffies + 202 AQ_CFG_POLLING_TIMER_INTERVAL); 203 } 204 205 int aq_nic_ndev_register(struct aq_nic_s *self) 206 { 207 int err = 0; 208 209 if (!self->ndev) { 210 err = -EINVAL; 211 goto err_exit; 212 } 213 214 err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops); 215 if (err) 216 goto err_exit; 217 218 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, 219 self->ndev->dev_addr); 220 if (err) 221 goto err_exit; 222 223 #if defined(AQ_CFG_MAC_ADDR_PERMANENT) 224 { 225 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT; 226 227 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent); 228 } 229 #endif 230 231 for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs; 232 self->aq_vecs++) { 233 self->aq_vec[self->aq_vecs] = 234 aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self)); 235 if (!self->aq_vec[self->aq_vecs]) { 236 err = -ENOMEM; 237 goto err_exit; 238 } 239 } 240 241 netif_carrier_off(self->ndev); 242 243 netif_tx_disable(self->ndev); 244 245 err = register_netdev(self->ndev); 246 if (err) 247 goto err_exit; 248 249 err_exit: 250 return err; 251 } 252 253 void aq_nic_ndev_init(struct aq_nic_s *self) 254 { 255 const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps; 256 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg; 257 258 self->ndev->hw_features |= aq_hw_caps->hw_features; 259 self->ndev->features = aq_hw_caps->hw_features; 260 self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM | 261 NETIF_F_RXHASH | NETIF_F_SG | NETIF_F_LRO; 262 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags; 263 self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 264 265 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN; 266 self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN; 267 268 } 269 270 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx, 271 struct aq_ring_s *ring) 272 { 273 self->aq_ring_tx[idx] = ring; 274 } 275 276 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self) 277 { 278 return self->ndev; 279 } 280 281 int aq_nic_init(struct aq_nic_s *self) 282 { 283 struct aq_vec_s *aq_vec = NULL; 284 int err = 0; 285 unsigned int i = 0U; 286 287 self->power_state = AQ_HW_POWER_STATE_D0; 288 err = self->aq_hw_ops->hw_reset(self->aq_hw); 289 if (err < 0) 290 goto err_exit; 291 292 err = self->aq_hw_ops->hw_init(self->aq_hw, 293 aq_nic_get_ndev(self)->dev_addr); 294 if (err < 0) 295 goto err_exit; 296 297 for (i = 0U, aq_vec = self->aq_vec[0]; 298 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 299 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw); 300 301 netif_carrier_off(self->ndev); 302 303 err_exit: 304 return err; 305 } 306 307 int aq_nic_start(struct aq_nic_s *self) 308 { 309 struct aq_vec_s *aq_vec = NULL; 310 int err = 0; 311 unsigned int i = 0U; 312 313 err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw, 314 self->mc_list.ar, 315 self->mc_list.count); 316 if (err < 0) 317 goto err_exit; 318 319 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, 320 self->packet_filter); 321 if (err < 0) 322 goto err_exit; 323 324 for (i = 0U, aq_vec = self->aq_vec[0]; 325 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 326 err = aq_vec_start(aq_vec); 327 if (err < 0) 328 goto err_exit; 329 } 330 331 err = self->aq_hw_ops->hw_start(self->aq_hw); 332 if (err < 0) 333 goto err_exit; 334 335 err = aq_nic_update_interrupt_moderation_settings(self); 336 if (err) 337 goto err_exit; 338 timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0); 339 mod_timer(&self->service_timer, jiffies + 340 AQ_CFG_SERVICE_TIMER_INTERVAL); 341 342 if (self->aq_nic_cfg.is_polling) { 343 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0); 344 mod_timer(&self->polling_timer, jiffies + 345 AQ_CFG_POLLING_TIMER_INTERVAL); 346 } else { 347 for (i = 0U, aq_vec = self->aq_vec[0]; 348 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 349 err = aq_pci_func_alloc_irq(self, i, 350 self->ndev->name, aq_vec, 351 aq_vec_get_affinity_mask(aq_vec)); 352 if (err < 0) 353 goto err_exit; 354 } 355 356 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw, 357 AQ_CFG_IRQ_MASK); 358 if (err < 0) 359 goto err_exit; 360 } 361 362 err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs); 363 if (err < 0) 364 goto err_exit; 365 366 err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs); 367 if (err < 0) 368 goto err_exit; 369 370 netif_tx_start_all_queues(self->ndev); 371 372 err_exit: 373 return err; 374 } 375 376 static unsigned int aq_nic_map_skb(struct aq_nic_s *self, 377 struct sk_buff *skb, 378 struct aq_ring_s *ring) 379 { 380 unsigned int ret = 0U; 381 unsigned int nr_frags = skb_shinfo(skb)->nr_frags; 382 unsigned int frag_count = 0U; 383 unsigned int dx = ring->sw_tail; 384 struct aq_ring_buff_s *first = NULL; 385 struct aq_ring_buff_s *dx_buff = &ring->buff_ring[dx]; 386 387 if (unlikely(skb_is_gso(skb))) { 388 dx_buff->flags = 0U; 389 dx_buff->len_pkt = skb->len; 390 dx_buff->len_l2 = ETH_HLEN; 391 dx_buff->len_l3 = ip_hdrlen(skb); 392 dx_buff->len_l4 = tcp_hdrlen(skb); 393 dx_buff->mss = skb_shinfo(skb)->gso_size; 394 dx_buff->is_txc = 1U; 395 dx_buff->eop_index = 0xffffU; 396 397 dx_buff->is_ipv6 = 398 (ip_hdr(skb)->version == 6) ? 1U : 0U; 399 400 dx = aq_ring_next_dx(ring, dx); 401 dx_buff = &ring->buff_ring[dx]; 402 ++ret; 403 } 404 405 dx_buff->flags = 0U; 406 dx_buff->len = skb_headlen(skb); 407 dx_buff->pa = dma_map_single(aq_nic_get_dev(self), 408 skb->data, 409 dx_buff->len, 410 DMA_TO_DEVICE); 411 412 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa))) 413 goto exit; 414 415 first = dx_buff; 416 dx_buff->len_pkt = skb->len; 417 dx_buff->is_sop = 1U; 418 dx_buff->is_mapped = 1U; 419 ++ret; 420 421 if (skb->ip_summed == CHECKSUM_PARTIAL) { 422 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ? 423 1U : 0U; 424 425 if (ip_hdr(skb)->version == 4) { 426 dx_buff->is_tcp_cso = 427 (ip_hdr(skb)->protocol == IPPROTO_TCP) ? 428 1U : 0U; 429 dx_buff->is_udp_cso = 430 (ip_hdr(skb)->protocol == IPPROTO_UDP) ? 431 1U : 0U; 432 } else if (ip_hdr(skb)->version == 6) { 433 dx_buff->is_tcp_cso = 434 (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP) ? 435 1U : 0U; 436 dx_buff->is_udp_cso = 437 (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP) ? 438 1U : 0U; 439 } 440 } 441 442 for (; nr_frags--; ++frag_count) { 443 unsigned int frag_len = 0U; 444 unsigned int buff_offset = 0U; 445 unsigned int buff_size = 0U; 446 dma_addr_t frag_pa; 447 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count]; 448 449 frag_len = skb_frag_size(frag); 450 451 while (frag_len) { 452 if (frag_len > AQ_CFG_TX_FRAME_MAX) 453 buff_size = AQ_CFG_TX_FRAME_MAX; 454 else 455 buff_size = frag_len; 456 457 frag_pa = skb_frag_dma_map(aq_nic_get_dev(self), 458 frag, 459 buff_offset, 460 buff_size, 461 DMA_TO_DEVICE); 462 463 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), 464 frag_pa))) 465 goto mapping_error; 466 467 dx = aq_ring_next_dx(ring, dx); 468 dx_buff = &ring->buff_ring[dx]; 469 470 dx_buff->flags = 0U; 471 dx_buff->len = buff_size; 472 dx_buff->pa = frag_pa; 473 dx_buff->is_mapped = 1U; 474 dx_buff->eop_index = 0xffffU; 475 476 frag_len -= buff_size; 477 buff_offset += buff_size; 478 479 ++ret; 480 } 481 } 482 483 first->eop_index = dx; 484 dx_buff->is_eop = 1U; 485 dx_buff->skb = skb; 486 goto exit; 487 488 mapping_error: 489 for (dx = ring->sw_tail; 490 ret > 0; 491 --ret, dx = aq_ring_next_dx(ring, dx)) { 492 dx_buff = &ring->buff_ring[dx]; 493 494 if (!dx_buff->is_txc && dx_buff->pa) { 495 if (unlikely(dx_buff->is_sop)) { 496 dma_unmap_single(aq_nic_get_dev(self), 497 dx_buff->pa, 498 dx_buff->len, 499 DMA_TO_DEVICE); 500 } else { 501 dma_unmap_page(aq_nic_get_dev(self), 502 dx_buff->pa, 503 dx_buff->len, 504 DMA_TO_DEVICE); 505 } 506 } 507 } 508 509 exit: 510 return ret; 511 } 512 513 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb) 514 { 515 struct aq_ring_s *ring = NULL; 516 unsigned int frags = 0U; 517 unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs; 518 unsigned int tc = 0U; 519 int err = NETDEV_TX_OK; 520 521 frags = skb_shinfo(skb)->nr_frags + 1; 522 523 ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)]; 524 525 if (frags > AQ_CFG_SKB_FRAGS_MAX) { 526 dev_kfree_skb_any(skb); 527 goto err_exit; 528 } 529 530 aq_ring_update_queue_state(ring); 531 532 /* Above status update may stop the queue. Check this. */ 533 if (__netif_subqueue_stopped(self->ndev, ring->idx)) { 534 err = NETDEV_TX_BUSY; 535 goto err_exit; 536 } 537 538 frags = aq_nic_map_skb(self, skb, ring); 539 540 if (likely(frags)) { 541 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw, 542 ring, frags); 543 if (err >= 0) { 544 ++ring->stats.tx.packets; 545 ring->stats.tx.bytes += skb->len; 546 } 547 } else { 548 err = NETDEV_TX_BUSY; 549 } 550 551 err_exit: 552 return err; 553 } 554 555 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self) 556 { 557 return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw); 558 } 559 560 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags) 561 { 562 int err = 0; 563 564 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags); 565 if (err < 0) 566 goto err_exit; 567 568 self->packet_filter = flags; 569 570 err_exit: 571 return err; 572 } 573 574 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev) 575 { 576 unsigned int packet_filter = self->packet_filter; 577 struct netdev_hw_addr *ha = NULL; 578 unsigned int i = 0U; 579 580 self->mc_list.count = 0; 581 if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 582 packet_filter |= IFF_PROMISC; 583 } else { 584 netdev_for_each_uc_addr(ha, ndev) { 585 ether_addr_copy(self->mc_list.ar[i++], ha->addr); 586 587 if (i >= AQ_HW_MULTICAST_ADDRESS_MAX) 588 break; 589 } 590 } 591 592 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 593 packet_filter |= IFF_ALLMULTI; 594 } else { 595 netdev_for_each_mc_addr(ha, ndev) { 596 ether_addr_copy(self->mc_list.ar[i++], ha->addr); 597 598 if (i >= AQ_HW_MULTICAST_ADDRESS_MAX) 599 break; 600 } 601 } 602 603 if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) { 604 packet_filter |= IFF_MULTICAST; 605 self->mc_list.count = i; 606 self->aq_hw_ops->hw_multicast_list_set(self->aq_hw, 607 self->mc_list.ar, 608 self->mc_list.count); 609 } 610 return aq_nic_set_packet_filter(self, packet_filter); 611 } 612 613 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu) 614 { 615 self->aq_nic_cfg.mtu = new_mtu; 616 617 return 0; 618 } 619 620 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev) 621 { 622 return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr); 623 } 624 625 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self) 626 { 627 return self->link_status.mbps; 628 } 629 630 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p) 631 { 632 u32 *regs_buff = p; 633 int err = 0; 634 635 regs->version = 1; 636 637 err = self->aq_hw_ops->hw_get_regs(self->aq_hw, 638 self->aq_nic_cfg.aq_hw_caps, 639 regs_buff); 640 if (err < 0) 641 goto err_exit; 642 643 err_exit: 644 return err; 645 } 646 647 int aq_nic_get_regs_count(struct aq_nic_s *self) 648 { 649 return self->aq_nic_cfg.aq_hw_caps->mac_regs_count; 650 } 651 652 void aq_nic_get_stats(struct aq_nic_s *self, u64 *data) 653 { 654 unsigned int i = 0U; 655 unsigned int count = 0U; 656 struct aq_vec_s *aq_vec = NULL; 657 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 658 659 if (!stats) 660 goto err_exit; 661 662 data[i] = stats->uprc + stats->mprc + stats->bprc; 663 data[++i] = stats->uprc; 664 data[++i] = stats->mprc; 665 data[++i] = stats->bprc; 666 data[++i] = stats->erpt; 667 data[++i] = stats->uptc + stats->mptc + stats->bptc; 668 data[++i] = stats->uptc; 669 data[++i] = stats->mptc; 670 data[++i] = stats->bptc; 671 data[++i] = stats->ubrc; 672 data[++i] = stats->ubtc; 673 data[++i] = stats->mbrc; 674 data[++i] = stats->mbtc; 675 data[++i] = stats->bbrc; 676 data[++i] = stats->bbtc; 677 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc; 678 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc; 679 data[++i] = stats->dma_pkt_rc; 680 data[++i] = stats->dma_pkt_tc; 681 data[++i] = stats->dma_oct_rc; 682 data[++i] = stats->dma_oct_tc; 683 data[++i] = stats->dpc; 684 685 i++; 686 687 data += i; 688 689 for (i = 0U, aq_vec = self->aq_vec[0]; 690 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 691 data += count; 692 aq_vec_get_sw_stats(aq_vec, data, &count); 693 } 694 695 err_exit:; 696 } 697 698 static void aq_nic_update_ndev_stats(struct aq_nic_s *self) 699 { 700 struct net_device *ndev = self->ndev; 701 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 702 703 ndev->stats.rx_packets = stats->uprc + stats->mprc + stats->bprc; 704 ndev->stats.rx_bytes = stats->ubrc + stats->mbrc + stats->bbrc; 705 ndev->stats.rx_errors = stats->erpr; 706 ndev->stats.tx_packets = stats->uptc + stats->mptc + stats->bptc; 707 ndev->stats.tx_bytes = stats->ubtc + stats->mbtc + stats->bbtc; 708 ndev->stats.tx_errors = stats->erpt; 709 ndev->stats.multicast = stats->mprc; 710 } 711 712 void aq_nic_get_link_ksettings(struct aq_nic_s *self, 713 struct ethtool_link_ksettings *cmd) 714 { 715 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 716 cmd->base.port = PORT_FIBRE; 717 else 718 cmd->base.port = PORT_TP; 719 /* This driver supports only 10G capable adapters, so DUPLEX_FULL */ 720 cmd->base.duplex = DUPLEX_FULL; 721 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg; 722 723 ethtool_link_ksettings_zero_link_mode(cmd, supported); 724 725 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G) 726 ethtool_link_ksettings_add_link_mode(cmd, supported, 727 10000baseT_Full); 728 729 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G) 730 ethtool_link_ksettings_add_link_mode(cmd, supported, 731 5000baseT_Full); 732 733 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS) 734 ethtool_link_ksettings_add_link_mode(cmd, supported, 735 2500baseT_Full); 736 737 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G) 738 ethtool_link_ksettings_add_link_mode(cmd, supported, 739 1000baseT_Full); 740 741 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M) 742 ethtool_link_ksettings_add_link_mode(cmd, supported, 743 100baseT_Full); 744 745 if (self->aq_nic_cfg.aq_hw_caps->flow_control) 746 ethtool_link_ksettings_add_link_mode(cmd, supported, 747 Pause); 748 749 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 750 751 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 752 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 753 else 754 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 755 756 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 757 758 if (self->aq_nic_cfg.is_autoneg) 759 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 760 761 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G) 762 ethtool_link_ksettings_add_link_mode(cmd, advertising, 763 10000baseT_Full); 764 765 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G) 766 ethtool_link_ksettings_add_link_mode(cmd, advertising, 767 5000baseT_Full); 768 769 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS) 770 ethtool_link_ksettings_add_link_mode(cmd, advertising, 771 2500baseT_Full); 772 773 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G) 774 ethtool_link_ksettings_add_link_mode(cmd, advertising, 775 1000baseT_Full); 776 777 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M) 778 ethtool_link_ksettings_add_link_mode(cmd, advertising, 779 100baseT_Full); 780 781 if (self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX) 782 ethtool_link_ksettings_add_link_mode(cmd, advertising, 783 Pause); 784 785 /* Asym is when either RX or TX, but not both */ 786 if (!!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_TX) ^ 787 !!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX)) 788 ethtool_link_ksettings_add_link_mode(cmd, advertising, 789 Asym_Pause); 790 791 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 792 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 793 else 794 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 795 } 796 797 int aq_nic_set_link_ksettings(struct aq_nic_s *self, 798 const struct ethtool_link_ksettings *cmd) 799 { 800 u32 speed = 0U; 801 u32 rate = 0U; 802 int err = 0; 803 804 if (cmd->base.autoneg == AUTONEG_ENABLE) { 805 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk; 806 self->aq_nic_cfg.is_autoneg = true; 807 } else { 808 speed = cmd->base.speed; 809 810 switch (speed) { 811 case SPEED_100: 812 rate = AQ_NIC_RATE_100M; 813 break; 814 815 case SPEED_1000: 816 rate = AQ_NIC_RATE_1G; 817 break; 818 819 case SPEED_2500: 820 rate = AQ_NIC_RATE_2GS; 821 break; 822 823 case SPEED_5000: 824 rate = AQ_NIC_RATE_5G; 825 break; 826 827 case SPEED_10000: 828 rate = AQ_NIC_RATE_10G; 829 break; 830 831 default: 832 err = -1; 833 goto err_exit; 834 break; 835 } 836 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) { 837 err = -1; 838 goto err_exit; 839 } 840 841 self->aq_nic_cfg.is_autoneg = false; 842 } 843 844 err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate); 845 if (err < 0) 846 goto err_exit; 847 848 self->aq_nic_cfg.link_speed_msk = rate; 849 850 err_exit: 851 return err; 852 } 853 854 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self) 855 { 856 return &self->aq_nic_cfg; 857 } 858 859 u32 aq_nic_get_fw_version(struct aq_nic_s *self) 860 { 861 u32 fw_version = 0U; 862 863 self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version); 864 865 return fw_version; 866 } 867 868 int aq_nic_stop(struct aq_nic_s *self) 869 { 870 struct aq_vec_s *aq_vec = NULL; 871 unsigned int i = 0U; 872 873 netif_tx_disable(self->ndev); 874 netif_carrier_off(self->ndev); 875 876 del_timer_sync(&self->service_timer); 877 878 self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK); 879 880 if (self->aq_nic_cfg.is_polling) 881 del_timer_sync(&self->polling_timer); 882 else 883 aq_pci_func_free_irqs(self); 884 885 for (i = 0U, aq_vec = self->aq_vec[0]; 886 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 887 aq_vec_stop(aq_vec); 888 889 return self->aq_hw_ops->hw_stop(self->aq_hw); 890 } 891 892 void aq_nic_deinit(struct aq_nic_s *self) 893 { 894 struct aq_vec_s *aq_vec = NULL; 895 unsigned int i = 0U; 896 897 if (!self) 898 goto err_exit; 899 900 for (i = 0U, aq_vec = self->aq_vec[0]; 901 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 902 aq_vec_deinit(aq_vec); 903 904 self->aq_fw_ops->deinit(self->aq_hw); 905 906 if (self->power_state != AQ_HW_POWER_STATE_D0 || 907 self->aq_hw->aq_nic_cfg->wol) { 908 self->aq_fw_ops->set_power(self->aq_hw, 909 self->power_state, 910 self->ndev->dev_addr); 911 } 912 913 err_exit:; 914 } 915 916 void aq_nic_free_vectors(struct aq_nic_s *self) 917 { 918 unsigned int i = 0U; 919 920 if (!self) 921 goto err_exit; 922 923 for (i = ARRAY_SIZE(self->aq_vec); i--;) { 924 if (self->aq_vec[i]) { 925 aq_vec_free(self->aq_vec[i]); 926 self->aq_vec[i] = NULL; 927 } 928 } 929 930 err_exit:; 931 } 932 933 int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg) 934 { 935 int err = 0; 936 937 if (!netif_running(self->ndev)) { 938 err = 0; 939 goto out; 940 } 941 rtnl_lock(); 942 if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) { 943 self->power_state = AQ_HW_POWER_STATE_D3; 944 netif_device_detach(self->ndev); 945 netif_tx_stop_all_queues(self->ndev); 946 947 err = aq_nic_stop(self); 948 if (err < 0) 949 goto err_exit; 950 951 aq_nic_deinit(self); 952 } else { 953 err = aq_nic_init(self); 954 if (err < 0) 955 goto err_exit; 956 957 err = aq_nic_start(self); 958 if (err < 0) 959 goto err_exit; 960 961 netif_device_attach(self->ndev); 962 netif_tx_start_all_queues(self->ndev); 963 } 964 965 err_exit: 966 rtnl_unlock(); 967 out: 968 return err; 969 } 970 971 void aq_nic_shutdown(struct aq_nic_s *self) 972 { 973 int err = 0; 974 975 if (!self->ndev) 976 return; 977 978 rtnl_lock(); 979 980 netif_device_detach(self->ndev); 981 982 if (netif_running(self->ndev)) { 983 err = aq_nic_stop(self); 984 if (err < 0) 985 goto err_exit; 986 } 987 aq_nic_deinit(self); 988 989 err_exit: 990 rtnl_unlock(); 991 }