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