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[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 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->rxpageorder = AQ_CFG_RX_PAGEORDER; 77 cfg->is_rss = AQ_CFG_IS_RSS_DEF; 78 cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF; 79 cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF; 80 cfg->flow_control = AQ_CFG_FC_MODE; 81 82 cfg->mtu = AQ_CFG_MTU_DEF; 83 cfg->link_speed_msk = AQ_CFG_SPEED_MSK; 84 cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF; 85 86 cfg->is_lro = AQ_CFG_IS_LRO_DEF; 87 88 /*descriptors */ 89 cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF); 90 cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF); 91 92 /*rss rings */ 93 cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF); 94 cfg->vecs = min(cfg->vecs, num_online_cpus()); 95 cfg->vecs = min(cfg->vecs, self->irqvecs); 96 /* cfg->vecs should be power of 2 for RSS */ 97 if (cfg->vecs >= 8U) 98 cfg->vecs = 8U; 99 else if (cfg->vecs >= 4U) 100 cfg->vecs = 4U; 101 else if (cfg->vecs >= 2U) 102 cfg->vecs = 2U; 103 else 104 cfg->vecs = 1U; 105 106 cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF); 107 108 aq_nic_rss_init(self, cfg->num_rss_queues); 109 110 cfg->irq_type = aq_pci_func_get_irq_type(self); 111 112 if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) || 113 (cfg->aq_hw_caps->vecs == 1U) || 114 (cfg->vecs == 1U)) { 115 cfg->is_rss = 0U; 116 cfg->vecs = 1U; 117 } 118 119 cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk; 120 cfg->features = cfg->aq_hw_caps->hw_features; 121 } 122 123 static int aq_nic_update_link_status(struct aq_nic_s *self) 124 { 125 int err = self->aq_fw_ops->update_link_status(self->aq_hw); 126 u32 fc = 0; 127 128 if (err) 129 return err; 130 131 if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) { 132 pr_info("%s: link change old %d new %d\n", 133 AQ_CFG_DRV_NAME, self->link_status.mbps, 134 self->aq_hw->aq_link_status.mbps); 135 aq_nic_update_interrupt_moderation_settings(self); 136 137 /* Driver has to update flow control settings on RX block 138 * on any link event. 139 * We should query FW whether it negotiated FC. 140 */ 141 if (self->aq_fw_ops->get_flow_control) 142 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc); 143 if (self->aq_hw_ops->hw_set_fc) 144 self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0); 145 } 146 147 self->link_status = self->aq_hw->aq_link_status; 148 if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) { 149 aq_utils_obj_set(&self->flags, 150 AQ_NIC_FLAG_STARTED); 151 aq_utils_obj_clear(&self->flags, 152 AQ_NIC_LINK_DOWN); 153 netif_carrier_on(self->ndev); 154 netif_tx_wake_all_queues(self->ndev); 155 } 156 if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) { 157 netif_carrier_off(self->ndev); 158 netif_tx_disable(self->ndev); 159 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN); 160 } 161 return 0; 162 } 163 164 static void aq_nic_service_timer_cb(struct timer_list *t) 165 { 166 struct aq_nic_s *self = from_timer(self, t, service_timer); 167 int ctimer = AQ_CFG_SERVICE_TIMER_INTERVAL; 168 int err = 0; 169 170 if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY)) 171 goto err_exit; 172 173 err = aq_nic_update_link_status(self); 174 if (err) 175 goto err_exit; 176 177 if (self->aq_fw_ops->update_stats) 178 self->aq_fw_ops->update_stats(self->aq_hw); 179 180 aq_nic_update_ndev_stats(self); 181 182 /* If no link - use faster timer rate to detect link up asap */ 183 if (!netif_carrier_ok(self->ndev)) 184 ctimer = max(ctimer / 2, 1); 185 186 err_exit: 187 mod_timer(&self->service_timer, jiffies + ctimer); 188 } 189 190 static void aq_nic_polling_timer_cb(struct timer_list *t) 191 { 192 struct aq_nic_s *self = from_timer(self, t, polling_timer); 193 struct aq_vec_s *aq_vec = NULL; 194 unsigned int i = 0U; 195 196 for (i = 0U, aq_vec = self->aq_vec[0]; 197 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 198 aq_vec_isr(i, (void *)aq_vec); 199 200 mod_timer(&self->polling_timer, jiffies + 201 AQ_CFG_POLLING_TIMER_INTERVAL); 202 } 203 204 int aq_nic_ndev_register(struct aq_nic_s *self) 205 { 206 int err = 0; 207 208 if (!self->ndev) { 209 err = -EINVAL; 210 goto err_exit; 211 } 212 213 err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops); 214 if (err) 215 goto err_exit; 216 217 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, 218 self->ndev->dev_addr); 219 if (err) 220 goto err_exit; 221 222 #if defined(AQ_CFG_MAC_ADDR_PERMANENT) 223 { 224 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT; 225 226 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent); 227 } 228 #endif 229 230 for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs; 231 self->aq_vecs++) { 232 self->aq_vec[self->aq_vecs] = 233 aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self)); 234 if (!self->aq_vec[self->aq_vecs]) { 235 err = -ENOMEM; 236 goto err_exit; 237 } 238 } 239 240 netif_carrier_off(self->ndev); 241 242 netif_tx_disable(self->ndev); 243 244 err = register_netdev(self->ndev); 245 if (err) 246 goto err_exit; 247 248 err_exit: 249 return err; 250 } 251 252 void aq_nic_ndev_init(struct aq_nic_s *self) 253 { 254 const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps; 255 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg; 256 257 self->ndev->hw_features |= aq_hw_caps->hw_features; 258 self->ndev->features = aq_hw_caps->hw_features; 259 self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM | 260 NETIF_F_RXHASH | NETIF_F_SG | NETIF_F_LRO; 261 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags; 262 self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 263 264 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN; 265 self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN; 266 267 } 268 269 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx, 270 struct aq_ring_s *ring) 271 { 272 self->aq_ring_tx[idx] = ring; 273 } 274 275 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self) 276 { 277 return self->ndev; 278 } 279 280 int aq_nic_init(struct aq_nic_s *self) 281 { 282 struct aq_vec_s *aq_vec = NULL; 283 int err = 0; 284 unsigned int i = 0U; 285 286 self->power_state = AQ_HW_POWER_STATE_D0; 287 err = self->aq_hw_ops->hw_reset(self->aq_hw); 288 if (err < 0) 289 goto err_exit; 290 291 err = self->aq_hw_ops->hw_init(self->aq_hw, 292 aq_nic_get_ndev(self)->dev_addr); 293 if (err < 0) 294 goto err_exit; 295 296 for (i = 0U, aq_vec = self->aq_vec[0]; 297 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 298 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw); 299 300 netif_carrier_off(self->ndev); 301 302 err_exit: 303 return err; 304 } 305 306 int aq_nic_start(struct aq_nic_s *self) 307 { 308 struct aq_vec_s *aq_vec = NULL; 309 int err = 0; 310 unsigned int i = 0U; 311 312 err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw, 313 self->mc_list.ar, 314 self->mc_list.count); 315 if (err < 0) 316 goto err_exit; 317 318 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, 319 self->packet_filter); 320 if (err < 0) 321 goto err_exit; 322 323 for (i = 0U, aq_vec = self->aq_vec[0]; 324 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 325 err = aq_vec_start(aq_vec); 326 if (err < 0) 327 goto err_exit; 328 } 329 330 err = self->aq_hw_ops->hw_start(self->aq_hw); 331 if (err < 0) 332 goto err_exit; 333 334 err = aq_nic_update_interrupt_moderation_settings(self); 335 if (err) 336 goto err_exit; 337 timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0); 338 mod_timer(&self->service_timer, jiffies + 339 AQ_CFG_SERVICE_TIMER_INTERVAL); 340 341 if (self->aq_nic_cfg.is_polling) { 342 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0); 343 mod_timer(&self->polling_timer, jiffies + 344 AQ_CFG_POLLING_TIMER_INTERVAL); 345 } else { 346 for (i = 0U, aq_vec = self->aq_vec[0]; 347 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 348 err = aq_pci_func_alloc_irq(self, i, 349 self->ndev->name, aq_vec, 350 aq_vec_get_affinity_mask(aq_vec)); 351 if (err < 0) 352 goto err_exit; 353 } 354 355 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw, 356 AQ_CFG_IRQ_MASK); 357 if (err < 0) 358 goto err_exit; 359 } 360 361 err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs); 362 if (err < 0) 363 goto err_exit; 364 365 err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs); 366 if (err < 0) 367 goto err_exit; 368 369 netif_tx_start_all_queues(self->ndev); 370 371 err_exit: 372 return err; 373 } 374 375 static unsigned int aq_nic_map_skb(struct aq_nic_s *self, 376 struct sk_buff *skb, 377 struct aq_ring_s *ring) 378 { 379 unsigned int ret = 0U; 380 unsigned int nr_frags = skb_shinfo(skb)->nr_frags; 381 unsigned int frag_count = 0U; 382 unsigned int dx = ring->sw_tail; 383 struct aq_ring_buff_s *first = NULL; 384 struct aq_ring_buff_s *dx_buff = &ring->buff_ring[dx]; 385 386 if (unlikely(skb_is_gso(skb))) { 387 dx_buff->flags = 0U; 388 dx_buff->len_pkt = skb->len; 389 dx_buff->len_l2 = ETH_HLEN; 390 dx_buff->len_l3 = ip_hdrlen(skb); 391 dx_buff->len_l4 = tcp_hdrlen(skb); 392 dx_buff->mss = skb_shinfo(skb)->gso_size; 393 dx_buff->is_txc = 1U; 394 dx_buff->eop_index = 0xffffU; 395 396 dx_buff->is_ipv6 = 397 (ip_hdr(skb)->version == 6) ? 1U : 0U; 398 399 dx = aq_ring_next_dx(ring, dx); 400 dx_buff = &ring->buff_ring[dx]; 401 ++ret; 402 } 403 404 dx_buff->flags = 0U; 405 dx_buff->len = skb_headlen(skb); 406 dx_buff->pa = dma_map_single(aq_nic_get_dev(self), 407 skb->data, 408 dx_buff->len, 409 DMA_TO_DEVICE); 410 411 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa))) 412 goto exit; 413 414 first = dx_buff; 415 dx_buff->len_pkt = skb->len; 416 dx_buff->is_sop = 1U; 417 dx_buff->is_mapped = 1U; 418 ++ret; 419 420 if (skb->ip_summed == CHECKSUM_PARTIAL) { 421 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ? 422 1U : 0U; 423 424 if (ip_hdr(skb)->version == 4) { 425 dx_buff->is_tcp_cso = 426 (ip_hdr(skb)->protocol == IPPROTO_TCP) ? 427 1U : 0U; 428 dx_buff->is_udp_cso = 429 (ip_hdr(skb)->protocol == IPPROTO_UDP) ? 430 1U : 0U; 431 } else if (ip_hdr(skb)->version == 6) { 432 dx_buff->is_tcp_cso = 433 (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP) ? 434 1U : 0U; 435 dx_buff->is_udp_cso = 436 (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP) ? 437 1U : 0U; 438 } 439 } 440 441 for (; nr_frags--; ++frag_count) { 442 unsigned int frag_len = 0U; 443 unsigned int buff_offset = 0U; 444 unsigned int buff_size = 0U; 445 dma_addr_t frag_pa; 446 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count]; 447 448 frag_len = skb_frag_size(frag); 449 450 while (frag_len) { 451 if (frag_len > AQ_CFG_TX_FRAME_MAX) 452 buff_size = AQ_CFG_TX_FRAME_MAX; 453 else 454 buff_size = frag_len; 455 456 frag_pa = skb_frag_dma_map(aq_nic_get_dev(self), 457 frag, 458 buff_offset, 459 buff_size, 460 DMA_TO_DEVICE); 461 462 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), 463 frag_pa))) 464 goto mapping_error; 465 466 dx = aq_ring_next_dx(ring, dx); 467 dx_buff = &ring->buff_ring[dx]; 468 469 dx_buff->flags = 0U; 470 dx_buff->len = buff_size; 471 dx_buff->pa = frag_pa; 472 dx_buff->is_mapped = 1U; 473 dx_buff->eop_index = 0xffffU; 474 475 frag_len -= buff_size; 476 buff_offset += buff_size; 477 478 ++ret; 479 } 480 } 481 482 first->eop_index = dx; 483 dx_buff->is_eop = 1U; 484 dx_buff->skb = skb; 485 goto exit; 486 487 mapping_error: 488 for (dx = ring->sw_tail; 489 ret > 0; 490 --ret, dx = aq_ring_next_dx(ring, dx)) { 491 dx_buff = &ring->buff_ring[dx]; 492 493 if (!dx_buff->is_txc && dx_buff->pa) { 494 if (unlikely(dx_buff->is_sop)) { 495 dma_unmap_single(aq_nic_get_dev(self), 496 dx_buff->pa, 497 dx_buff->len, 498 DMA_TO_DEVICE); 499 } else { 500 dma_unmap_page(aq_nic_get_dev(self), 501 dx_buff->pa, 502 dx_buff->len, 503 DMA_TO_DEVICE); 504 } 505 } 506 } 507 508 exit: 509 return ret; 510 } 511 512 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb) 513 { 514 struct aq_ring_s *ring = NULL; 515 unsigned int frags = 0U; 516 unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs; 517 unsigned int tc = 0U; 518 int err = NETDEV_TX_OK; 519 520 frags = skb_shinfo(skb)->nr_frags + 1; 521 522 ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)]; 523 524 if (frags > AQ_CFG_SKB_FRAGS_MAX) { 525 dev_kfree_skb_any(skb); 526 goto err_exit; 527 } 528 529 aq_ring_update_queue_state(ring); 530 531 /* Above status update may stop the queue. Check this. */ 532 if (__netif_subqueue_stopped(self->ndev, ring->idx)) { 533 err = NETDEV_TX_BUSY; 534 goto err_exit; 535 } 536 537 frags = aq_nic_map_skb(self, skb, ring); 538 539 if (likely(frags)) { 540 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw, 541 ring, frags); 542 if (err >= 0) { 543 ++ring->stats.tx.packets; 544 ring->stats.tx.bytes += skb->len; 545 } 546 } else { 547 err = NETDEV_TX_BUSY; 548 } 549 550 err_exit: 551 return err; 552 } 553 554 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self) 555 { 556 return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw); 557 } 558 559 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags) 560 { 561 int err = 0; 562 563 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags); 564 if (err < 0) 565 goto err_exit; 566 567 self->packet_filter = flags; 568 569 err_exit: 570 return err; 571 } 572 573 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev) 574 { 575 unsigned int packet_filter = self->packet_filter; 576 struct netdev_hw_addr *ha = NULL; 577 unsigned int i = 0U; 578 579 self->mc_list.count = 0; 580 if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 581 packet_filter |= IFF_PROMISC; 582 } else { 583 netdev_for_each_uc_addr(ha, ndev) { 584 ether_addr_copy(self->mc_list.ar[i++], ha->addr); 585 586 if (i >= AQ_HW_MULTICAST_ADDRESS_MAX) 587 break; 588 } 589 } 590 591 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) { 592 packet_filter |= IFF_ALLMULTI; 593 } else { 594 netdev_for_each_mc_addr(ha, ndev) { 595 ether_addr_copy(self->mc_list.ar[i++], ha->addr); 596 597 if (i >= AQ_HW_MULTICAST_ADDRESS_MAX) 598 break; 599 } 600 } 601 602 if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) { 603 packet_filter |= IFF_MULTICAST; 604 self->mc_list.count = i; 605 self->aq_hw_ops->hw_multicast_list_set(self->aq_hw, 606 self->mc_list.ar, 607 self->mc_list.count); 608 } 609 return aq_nic_set_packet_filter(self, packet_filter); 610 } 611 612 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu) 613 { 614 self->aq_nic_cfg.mtu = new_mtu; 615 616 return 0; 617 } 618 619 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev) 620 { 621 return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr); 622 } 623 624 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self) 625 { 626 return self->link_status.mbps; 627 } 628 629 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p) 630 { 631 u32 *regs_buff = p; 632 int err = 0; 633 634 regs->version = 1; 635 636 err = self->aq_hw_ops->hw_get_regs(self->aq_hw, 637 self->aq_nic_cfg.aq_hw_caps, 638 regs_buff); 639 if (err < 0) 640 goto err_exit; 641 642 err_exit: 643 return err; 644 } 645 646 int aq_nic_get_regs_count(struct aq_nic_s *self) 647 { 648 return self->aq_nic_cfg.aq_hw_caps->mac_regs_count; 649 } 650 651 void aq_nic_get_stats(struct aq_nic_s *self, u64 *data) 652 { 653 unsigned int i = 0U; 654 unsigned int count = 0U; 655 struct aq_vec_s *aq_vec = NULL; 656 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 657 658 if (!stats) 659 goto err_exit; 660 661 data[i] = stats->uprc + stats->mprc + stats->bprc; 662 data[++i] = stats->uprc; 663 data[++i] = stats->mprc; 664 data[++i] = stats->bprc; 665 data[++i] = stats->erpt; 666 data[++i] = stats->uptc + stats->mptc + stats->bptc; 667 data[++i] = stats->uptc; 668 data[++i] = stats->mptc; 669 data[++i] = stats->bptc; 670 data[++i] = stats->ubrc; 671 data[++i] = stats->ubtc; 672 data[++i] = stats->mbrc; 673 data[++i] = stats->mbtc; 674 data[++i] = stats->bbrc; 675 data[++i] = stats->bbtc; 676 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc; 677 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc; 678 data[++i] = stats->dma_pkt_rc; 679 data[++i] = stats->dma_pkt_tc; 680 data[++i] = stats->dma_oct_rc; 681 data[++i] = stats->dma_oct_tc; 682 data[++i] = stats->dpc; 683 684 i++; 685 686 data += i; 687 688 for (i = 0U, aq_vec = self->aq_vec[0]; 689 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { 690 data += count; 691 aq_vec_get_sw_stats(aq_vec, data, &count); 692 } 693 694 err_exit:; 695 } 696 697 static void aq_nic_update_ndev_stats(struct aq_nic_s *self) 698 { 699 struct net_device *ndev = self->ndev; 700 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw); 701 702 ndev->stats.rx_packets = stats->uprc + stats->mprc + stats->bprc; 703 ndev->stats.rx_bytes = stats->ubrc + stats->mbrc + stats->bbrc; 704 ndev->stats.rx_errors = stats->erpr; 705 ndev->stats.tx_packets = stats->uptc + stats->mptc + stats->bptc; 706 ndev->stats.tx_bytes = stats->ubtc + stats->mbtc + stats->bbtc; 707 ndev->stats.tx_errors = stats->erpt; 708 ndev->stats.multicast = stats->mprc; 709 } 710 711 void aq_nic_get_link_ksettings(struct aq_nic_s *self, 712 struct ethtool_link_ksettings *cmd) 713 { 714 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 715 cmd->base.port = PORT_FIBRE; 716 else 717 cmd->base.port = PORT_TP; 718 /* This driver supports only 10G capable adapters, so DUPLEX_FULL */ 719 cmd->base.duplex = DUPLEX_FULL; 720 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg; 721 722 ethtool_link_ksettings_zero_link_mode(cmd, supported); 723 724 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G) 725 ethtool_link_ksettings_add_link_mode(cmd, supported, 726 10000baseT_Full); 727 728 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G) 729 ethtool_link_ksettings_add_link_mode(cmd, supported, 730 5000baseT_Full); 731 732 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS) 733 ethtool_link_ksettings_add_link_mode(cmd, supported, 734 2500baseT_Full); 735 736 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G) 737 ethtool_link_ksettings_add_link_mode(cmd, supported, 738 1000baseT_Full); 739 740 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M) 741 ethtool_link_ksettings_add_link_mode(cmd, supported, 742 100baseT_Full); 743 744 if (self->aq_nic_cfg.aq_hw_caps->flow_control) 745 ethtool_link_ksettings_add_link_mode(cmd, supported, 746 Pause); 747 748 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 749 750 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 751 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 752 else 753 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 754 755 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 756 757 if (self->aq_nic_cfg.is_autoneg) 758 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 759 760 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G) 761 ethtool_link_ksettings_add_link_mode(cmd, advertising, 762 10000baseT_Full); 763 764 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G) 765 ethtool_link_ksettings_add_link_mode(cmd, advertising, 766 5000baseT_Full); 767 768 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS) 769 ethtool_link_ksettings_add_link_mode(cmd, advertising, 770 2500baseT_Full); 771 772 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G) 773 ethtool_link_ksettings_add_link_mode(cmd, advertising, 774 1000baseT_Full); 775 776 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M) 777 ethtool_link_ksettings_add_link_mode(cmd, advertising, 778 100baseT_Full); 779 780 if (self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX) 781 ethtool_link_ksettings_add_link_mode(cmd, advertising, 782 Pause); 783 784 /* Asym is when either RX or TX, but not both */ 785 if (!!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_TX) ^ 786 !!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX)) 787 ethtool_link_ksettings_add_link_mode(cmd, advertising, 788 Asym_Pause); 789 790 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE) 791 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 792 else 793 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 794 } 795 796 int aq_nic_set_link_ksettings(struct aq_nic_s *self, 797 const struct ethtool_link_ksettings *cmd) 798 { 799 u32 speed = 0U; 800 u32 rate = 0U; 801 int err = 0; 802 803 if (cmd->base.autoneg == AUTONEG_ENABLE) { 804 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk; 805 self->aq_nic_cfg.is_autoneg = true; 806 } else { 807 speed = cmd->base.speed; 808 809 switch (speed) { 810 case SPEED_100: 811 rate = AQ_NIC_RATE_100M; 812 break; 813 814 case SPEED_1000: 815 rate = AQ_NIC_RATE_1G; 816 break; 817 818 case SPEED_2500: 819 rate = AQ_NIC_RATE_2GS; 820 break; 821 822 case SPEED_5000: 823 rate = AQ_NIC_RATE_5G; 824 break; 825 826 case SPEED_10000: 827 rate = AQ_NIC_RATE_10G; 828 break; 829 830 default: 831 err = -1; 832 goto err_exit; 833 break; 834 } 835 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) { 836 err = -1; 837 goto err_exit; 838 } 839 840 self->aq_nic_cfg.is_autoneg = false; 841 } 842 843 err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate); 844 if (err < 0) 845 goto err_exit; 846 847 self->aq_nic_cfg.link_speed_msk = rate; 848 849 err_exit: 850 return err; 851 } 852 853 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self) 854 { 855 return &self->aq_nic_cfg; 856 } 857 858 u32 aq_nic_get_fw_version(struct aq_nic_s *self) 859 { 860 u32 fw_version = 0U; 861 862 self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version); 863 864 return fw_version; 865 } 866 867 int aq_nic_stop(struct aq_nic_s *self) 868 { 869 struct aq_vec_s *aq_vec = NULL; 870 unsigned int i = 0U; 871 872 netif_tx_disable(self->ndev); 873 netif_carrier_off(self->ndev); 874 875 del_timer_sync(&self->service_timer); 876 877 self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK); 878 879 if (self->aq_nic_cfg.is_polling) 880 del_timer_sync(&self->polling_timer); 881 else 882 aq_pci_func_free_irqs(self); 883 884 for (i = 0U, aq_vec = self->aq_vec[0]; 885 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 886 aq_vec_stop(aq_vec); 887 888 return self->aq_hw_ops->hw_stop(self->aq_hw); 889 } 890 891 void aq_nic_deinit(struct aq_nic_s *self) 892 { 893 struct aq_vec_s *aq_vec = NULL; 894 unsigned int i = 0U; 895 896 if (!self) 897 goto err_exit; 898 899 for (i = 0U, aq_vec = self->aq_vec[0]; 900 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) 901 aq_vec_deinit(aq_vec); 902 903 self->aq_fw_ops->deinit(self->aq_hw); 904 905 if (self->power_state != AQ_HW_POWER_STATE_D0 || 906 self->aq_hw->aq_nic_cfg->wol) { 907 self->aq_fw_ops->set_power(self->aq_hw, 908 self->power_state, 909 self->ndev->dev_addr); 910 } 911 912 err_exit:; 913 } 914 915 void aq_nic_free_vectors(struct aq_nic_s *self) 916 { 917 unsigned int i = 0U; 918 919 if (!self) 920 goto err_exit; 921 922 for (i = ARRAY_SIZE(self->aq_vec); i--;) { 923 if (self->aq_vec[i]) { 924 aq_vec_free(self->aq_vec[i]); 925 self->aq_vec[i] = NULL; 926 } 927 } 928 929 err_exit:; 930 } 931 932 int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg) 933 { 934 int err = 0; 935 936 if (!netif_running(self->ndev)) { 937 err = 0; 938 goto out; 939 } 940 rtnl_lock(); 941 if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) { 942 self->power_state = AQ_HW_POWER_STATE_D3; 943 netif_device_detach(self->ndev); 944 netif_tx_stop_all_queues(self->ndev); 945 946 err = aq_nic_stop(self); 947 if (err < 0) 948 goto err_exit; 949 950 aq_nic_deinit(self); 951 } else { 952 err = aq_nic_init(self); 953 if (err < 0) 954 goto err_exit; 955 956 err = aq_nic_start(self); 957 if (err < 0) 958 goto err_exit; 959 960 netif_device_attach(self->ndev); 961 netif_tx_start_all_queues(self->ndev); 962 } 963 964 err_exit: 965 rtnl_unlock(); 966 out: 967 return err; 968 } 969 970 void aq_nic_shutdown(struct aq_nic_s *self) 971 { 972 int err = 0; 973 974 if (!self->ndev) 975 return; 976 977 rtnl_lock(); 978 979 netif_device_detach(self->ndev); 980 981 if (netif_running(self->ndev)) { 982 err = aq_nic_stop(self); 983 if (err < 0) 984 goto err_exit; 985 } 986 aq_nic_deinit(self); 987 988 err_exit: 989 rtnl_unlock(); 990 } 991