1/****************************************************************************** 2* This software may be used and distributed according to the terms of 3* the GNU General Public License (GPL), incorporated herein by reference. 4* Drivers based on or derived from this code fall under the GPL and must 5* retain the authorship, copyright and license notice. This file is not 6* a complete program and may only be used when the entire operating 7* system is licensed under the GPL. 8* See the file COPYING in this distribution for more information. 9* 10* vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O 11* Virtualized Server Adapter. 12* Copyright(c) 2002-2010 Exar Corp. 13* 14* The module loadable parameters that are supported by the driver and a brief 15* explanation of all the variables: 16* vlan_tag_strip: 17* Strip VLAN Tag enable/disable. Instructs the device to remove 18* the VLAN tag from all received tagged frames that are not 19* replicated at the internal L2 switch. 20* 0 - Do not strip the VLAN tag. 21* 1 - Strip the VLAN tag. 22* 23* addr_learn_en: 24* Enable learning the mac address of the guest OS interface in 25* a virtualization environment. 26* 0 - DISABLE 27* 1 - ENABLE 28* 29* max_config_port: 30* Maximum number of port to be supported. 31* MIN -1 and MAX - 2 32* 33* max_config_vpath: 34* This configures the maximum no of VPATH configures for each 35* device function. 36* MIN - 1 and MAX - 17 37* 38* max_config_dev: 39* This configures maximum no of Device function to be enabled. 40* MIN - 1 and MAX - 17 41* 42******************************************************************************/ 43 44#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 45 46#include <linux/bitops.h> 47#include <linux/if_vlan.h> 48#include <linux/interrupt.h> 49#include <linux/pci.h> 50#include <linux/slab.h> 51#include <linux/tcp.h> 52#include <net/ip.h> 53#include <linux/netdevice.h> 54#include <linux/etherdevice.h> 55#include <linux/firmware.h> 56#include <linux/net_tstamp.h> 57#include <linux/prefetch.h> 58#include <linux/module.h> 59#include "vxge-main.h" 60#include "vxge-reg.h" 61 62MODULE_LICENSE("Dual BSD/GPL"); 63MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O" 64 "Virtualized Server Adapter"); 65 66static const struct pci_device_id vxge_id_table[] = { 67 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID, 68 PCI_ANY_ID}, 69 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID, 70 PCI_ANY_ID}, 71 {0} 72}; 73 74MODULE_DEVICE_TABLE(pci, vxge_id_table); 75 76VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE); 77VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT); 78VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT); 79VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT); 80VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT); 81VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV); 82 83static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] = 84 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31}; 85static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] = 86 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF}; 87module_param_array(bw_percentage, uint, NULL, 0); 88 89static struct vxge_drv_config *driver_config; 90static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev); 91 92static inline int is_vxge_card_up(struct vxgedev *vdev) 93{ 94 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state); 95} 96 97static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo) 98{ 99 struct sk_buff **skb_ptr = NULL; 100 struct sk_buff **temp; 101#define NR_SKB_COMPLETED 16 102 struct sk_buff *completed[NR_SKB_COMPLETED]; 103 int more; 104 105 do { 106 more = 0; 107 skb_ptr = completed; 108 109 if (__netif_tx_trylock(fifo->txq)) { 110 vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr, 111 NR_SKB_COMPLETED, &more); 112 __netif_tx_unlock(fifo->txq); 113 } 114 115 /* free SKBs */ 116 for (temp = completed; temp != skb_ptr; temp++) 117 dev_consume_skb_irq(*temp); 118 } while (more); 119} 120 121static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev) 122{ 123 int i; 124 125 /* Complete all transmits */ 126 for (i = 0; i < vdev->no_of_vpath; i++) 127 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo); 128} 129 130static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev) 131{ 132 int i; 133 struct vxge_ring *ring; 134 135 /* Complete all receives*/ 136 for (i = 0; i < vdev->no_of_vpath; i++) { 137 ring = &vdev->vpaths[i].ring; 138 vxge_hw_vpath_poll_rx(ring->handle); 139 } 140} 141 142/* 143 * vxge_callback_link_up 144 * 145 * This function is called during interrupt context to notify link up state 146 * change. 147 */ 148static void vxge_callback_link_up(struct __vxge_hw_device *hldev) 149{ 150 struct net_device *dev = hldev->ndev; 151 struct vxgedev *vdev = netdev_priv(dev); 152 153 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 154 vdev->ndev->name, __func__, __LINE__); 155 netdev_notice(vdev->ndev, "Link Up\n"); 156 vdev->stats.link_up++; 157 158 netif_carrier_on(vdev->ndev); 159 netif_tx_wake_all_queues(vdev->ndev); 160 161 vxge_debug_entryexit(VXGE_TRACE, 162 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__); 163} 164 165/* 166 * vxge_callback_link_down 167 * 168 * This function is called during interrupt context to notify link down state 169 * change. 170 */ 171static void vxge_callback_link_down(struct __vxge_hw_device *hldev) 172{ 173 struct net_device *dev = hldev->ndev; 174 struct vxgedev *vdev = netdev_priv(dev); 175 176 vxge_debug_entryexit(VXGE_TRACE, 177 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__); 178 netdev_notice(vdev->ndev, "Link Down\n"); 179 180 vdev->stats.link_down++; 181 netif_carrier_off(vdev->ndev); 182 netif_tx_stop_all_queues(vdev->ndev); 183 184 vxge_debug_entryexit(VXGE_TRACE, 185 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__); 186} 187 188/* 189 * vxge_rx_alloc 190 * 191 * Allocate SKB. 192 */ 193static struct sk_buff * 194vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size) 195{ 196 struct net_device *dev; 197 struct sk_buff *skb; 198 struct vxge_rx_priv *rx_priv; 199 200 dev = ring->ndev; 201 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 202 ring->ndev->name, __func__, __LINE__); 203 204 rx_priv = vxge_hw_ring_rxd_private_get(dtrh); 205 206 /* try to allocate skb first. this one may fail */ 207 skb = netdev_alloc_skb(dev, skb_size + 208 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); 209 if (skb == NULL) { 210 vxge_debug_mem(VXGE_ERR, 211 "%s: out of memory to allocate SKB", dev->name); 212 ring->stats.skb_alloc_fail++; 213 return NULL; 214 } 215 216 vxge_debug_mem(VXGE_TRACE, 217 "%s: %s:%d Skb : 0x%p", ring->ndev->name, 218 __func__, __LINE__, skb); 219 220 skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); 221 222 rx_priv->skb = skb; 223 rx_priv->skb_data = NULL; 224 rx_priv->data_size = skb_size; 225 vxge_debug_entryexit(VXGE_TRACE, 226 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); 227 228 return skb; 229} 230 231/* 232 * vxge_rx_map 233 */ 234static int vxge_rx_map(void *dtrh, struct vxge_ring *ring) 235{ 236 struct vxge_rx_priv *rx_priv; 237 dma_addr_t dma_addr; 238 239 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 240 ring->ndev->name, __func__, __LINE__); 241 rx_priv = vxge_hw_ring_rxd_private_get(dtrh); 242 243 rx_priv->skb_data = rx_priv->skb->data; 244 dma_addr = dma_map_single(&ring->pdev->dev, rx_priv->skb_data, 245 rx_priv->data_size, DMA_FROM_DEVICE); 246 247 if (unlikely(dma_mapping_error(&ring->pdev->dev, dma_addr))) { 248 ring->stats.pci_map_fail++; 249 return -EIO; 250 } 251 vxge_debug_mem(VXGE_TRACE, 252 "%s: %s:%d 1 buffer mode dma_addr = 0x%llx", 253 ring->ndev->name, __func__, __LINE__, 254 (unsigned long long)dma_addr); 255 vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size); 256 257 rx_priv->data_dma = dma_addr; 258 vxge_debug_entryexit(VXGE_TRACE, 259 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); 260 261 return 0; 262} 263 264/* 265 * vxge_rx_initial_replenish 266 * Allocation of RxD as an initial replenish procedure. 267 */ 268static enum vxge_hw_status 269vxge_rx_initial_replenish(void *dtrh, void *userdata) 270{ 271 struct vxge_ring *ring = (struct vxge_ring *)userdata; 272 struct vxge_rx_priv *rx_priv; 273 274 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 275 ring->ndev->name, __func__, __LINE__); 276 if (vxge_rx_alloc(dtrh, ring, 277 VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL) 278 return VXGE_HW_FAIL; 279 280 if (vxge_rx_map(dtrh, ring)) { 281 rx_priv = vxge_hw_ring_rxd_private_get(dtrh); 282 dev_kfree_skb(rx_priv->skb); 283 284 return VXGE_HW_FAIL; 285 } 286 vxge_debug_entryexit(VXGE_TRACE, 287 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); 288 289 return VXGE_HW_OK; 290} 291 292static inline void 293vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan, 294 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info) 295{ 296 297 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 298 ring->ndev->name, __func__, __LINE__); 299 skb_record_rx_queue(skb, ring->driver_id); 300 skb->protocol = eth_type_trans(skb, ring->ndev); 301 302 u64_stats_update_begin(&ring->stats.syncp); 303 ring->stats.rx_frms++; 304 ring->stats.rx_bytes += pkt_length; 305 306 if (skb->pkt_type == PACKET_MULTICAST) 307 ring->stats.rx_mcast++; 308 u64_stats_update_end(&ring->stats.syncp); 309 310 vxge_debug_rx(VXGE_TRACE, 311 "%s: %s:%d skb protocol = %d", 312 ring->ndev->name, __func__, __LINE__, skb->protocol); 313 314 if (ext_info->vlan && 315 ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE) 316 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan); 317 napi_gro_receive(ring->napi_p, skb); 318 319 vxge_debug_entryexit(VXGE_TRACE, 320 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); 321} 322 323static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring, 324 struct vxge_rx_priv *rx_priv) 325{ 326 dma_sync_single_for_device(&ring->pdev->dev, rx_priv->data_dma, 327 rx_priv->data_size, DMA_FROM_DEVICE); 328 329 vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size); 330 vxge_hw_ring_rxd_pre_post(ring->handle, dtr); 331} 332 333static inline void vxge_post(int *dtr_cnt, void **first_dtr, 334 void *post_dtr, struct __vxge_hw_ring *ringh) 335{ 336 int dtr_count = *dtr_cnt; 337 if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) { 338 if (*first_dtr) 339 vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr); 340 *first_dtr = post_dtr; 341 } else 342 vxge_hw_ring_rxd_post_post(ringh, post_dtr); 343 dtr_count++; 344 *dtr_cnt = dtr_count; 345} 346 347/* 348 * vxge_rx_1b_compl 349 * 350 * If the interrupt is because of a received frame or if the receive ring 351 * contains fresh as yet un-processed frames, this function is called. 352 */ 353static enum vxge_hw_status 354vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr, 355 u8 t_code, void *userdata) 356{ 357 struct vxge_ring *ring = (struct vxge_ring *)userdata; 358 struct net_device *dev = ring->ndev; 359 unsigned int dma_sizes; 360 void *first_dtr = NULL; 361 int dtr_cnt = 0; 362 int data_size; 363 dma_addr_t data_dma; 364 int pkt_length; 365 struct sk_buff *skb; 366 struct vxge_rx_priv *rx_priv; 367 struct vxge_hw_ring_rxd_info ext_info; 368 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 369 ring->ndev->name, __func__, __LINE__); 370 371 if (ring->budget <= 0) 372 goto out; 373 374 do { 375 prefetch((char *)dtr + L1_CACHE_BYTES); 376 rx_priv = vxge_hw_ring_rxd_private_get(dtr); 377 skb = rx_priv->skb; 378 data_size = rx_priv->data_size; 379 data_dma = rx_priv->data_dma; 380 prefetch(rx_priv->skb_data); 381 382 vxge_debug_rx(VXGE_TRACE, 383 "%s: %s:%d skb = 0x%p", 384 ring->ndev->name, __func__, __LINE__, skb); 385 386 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes); 387 pkt_length = dma_sizes; 388 389 pkt_length -= ETH_FCS_LEN; 390 391 vxge_debug_rx(VXGE_TRACE, 392 "%s: %s:%d Packet Length = %d", 393 ring->ndev->name, __func__, __LINE__, pkt_length); 394 395 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info); 396 397 /* check skb validity */ 398 vxge_assert(skb); 399 400 prefetch((char *)skb + L1_CACHE_BYTES); 401 if (unlikely(t_code)) { 402 if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) != 403 VXGE_HW_OK) { 404 405 ring->stats.rx_errors++; 406 vxge_debug_rx(VXGE_TRACE, 407 "%s: %s :%d Rx T_code is %d", 408 ring->ndev->name, __func__, 409 __LINE__, t_code); 410 411 /* If the t_code is not supported and if the 412 * t_code is other than 0x5 (unparseable packet 413 * such as unknown UPV6 header), Drop it !!! 414 */ 415 vxge_re_pre_post(dtr, ring, rx_priv); 416 417 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); 418 ring->stats.rx_dropped++; 419 continue; 420 } 421 } 422 423 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) { 424 if (vxge_rx_alloc(dtr, ring, data_size) != NULL) { 425 if (!vxge_rx_map(dtr, ring)) { 426 skb_put(skb, pkt_length); 427 428 dma_unmap_single(&ring->pdev->dev, 429 data_dma, data_size, 430 DMA_FROM_DEVICE); 431 432 vxge_hw_ring_rxd_pre_post(ringh, dtr); 433 vxge_post(&dtr_cnt, &first_dtr, dtr, 434 ringh); 435 } else { 436 dev_kfree_skb(rx_priv->skb); 437 rx_priv->skb = skb; 438 rx_priv->data_size = data_size; 439 vxge_re_pre_post(dtr, ring, rx_priv); 440 441 vxge_post(&dtr_cnt, &first_dtr, dtr, 442 ringh); 443 ring->stats.rx_dropped++; 444 break; 445 } 446 } else { 447 vxge_re_pre_post(dtr, ring, rx_priv); 448 449 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); 450 ring->stats.rx_dropped++; 451 break; 452 } 453 } else { 454 struct sk_buff *skb_up; 455 456 skb_up = netdev_alloc_skb(dev, pkt_length + 457 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); 458 if (skb_up != NULL) { 459 skb_reserve(skb_up, 460 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); 461 462 dma_sync_single_for_cpu(&ring->pdev->dev, 463 data_dma, data_size, 464 DMA_FROM_DEVICE); 465 466 vxge_debug_mem(VXGE_TRACE, 467 "%s: %s:%d skb_up = %p", 468 ring->ndev->name, __func__, 469 __LINE__, skb); 470 memcpy(skb_up->data, skb->data, pkt_length); 471 472 vxge_re_pre_post(dtr, ring, rx_priv); 473 474 vxge_post(&dtr_cnt, &first_dtr, dtr, 475 ringh); 476 /* will netif_rx small SKB instead */ 477 skb = skb_up; 478 skb_put(skb, pkt_length); 479 } else { 480 vxge_re_pre_post(dtr, ring, rx_priv); 481 482 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); 483 vxge_debug_rx(VXGE_ERR, 484 "%s: vxge_rx_1b_compl: out of " 485 "memory", dev->name); 486 ring->stats.skb_alloc_fail++; 487 break; 488 } 489 } 490 491 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) && 492 !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) && 493 (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */ 494 ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK && 495 ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK) 496 skb->ip_summed = CHECKSUM_UNNECESSARY; 497 else 498 skb_checksum_none_assert(skb); 499 500 501 if (ring->rx_hwts) { 502 struct skb_shared_hwtstamps *skb_hwts; 503 u32 ns = *(u32 *)(skb->head + pkt_length); 504 505 skb_hwts = skb_hwtstamps(skb); 506 skb_hwts->hwtstamp = ns_to_ktime(ns); 507 } 508 509 /* rth_hash_type and rth_it_hit are non-zero regardless of 510 * whether rss is enabled. Only the rth_value is zero/non-zero 511 * if rss is disabled/enabled, so key off of that. 512 */ 513 if (ext_info.rth_value) 514 skb_set_hash(skb, ext_info.rth_value, 515 PKT_HASH_TYPE_L3); 516 517 vxge_rx_complete(ring, skb, ext_info.vlan, 518 pkt_length, &ext_info); 519 520 ring->budget--; 521 ring->pkts_processed++; 522 if (!ring->budget) 523 break; 524 525 } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr, 526 &t_code) == VXGE_HW_OK); 527 528 if (first_dtr) 529 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr); 530 531out: 532 vxge_debug_entryexit(VXGE_TRACE, 533 "%s:%d Exiting...", 534 __func__, __LINE__); 535 return VXGE_HW_OK; 536} 537 538/* 539 * vxge_xmit_compl 540 * 541 * If an interrupt was raised to indicate DMA complete of the Tx packet, 542 * this function is called. It identifies the last TxD whose buffer was 543 * freed and frees all skbs whose data have already DMA'ed into the NICs 544 * internal memory. 545 */ 546static enum vxge_hw_status 547vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr, 548 enum vxge_hw_fifo_tcode t_code, void *userdata, 549 struct sk_buff ***skb_ptr, int nr_skb, int *more) 550{ 551 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata; 552 struct sk_buff *skb, **done_skb = *skb_ptr; 553 int pkt_cnt = 0; 554 555 vxge_debug_entryexit(VXGE_TRACE, 556 "%s:%d Entered....", __func__, __LINE__); 557 558 do { 559 int frg_cnt; 560 skb_frag_t *frag; 561 int i = 0, j; 562 struct vxge_tx_priv *txd_priv = 563 vxge_hw_fifo_txdl_private_get(dtr); 564 565 skb = txd_priv->skb; 566 frg_cnt = skb_shinfo(skb)->nr_frags; 567 frag = &skb_shinfo(skb)->frags[0]; 568 569 vxge_debug_tx(VXGE_TRACE, 570 "%s: %s:%d fifo_hw = %p dtr = %p " 571 "tcode = 0x%x", fifo->ndev->name, __func__, 572 __LINE__, fifo_hw, dtr, t_code); 573 /* check skb validity */ 574 vxge_assert(skb); 575 vxge_debug_tx(VXGE_TRACE, 576 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d", 577 fifo->ndev->name, __func__, __LINE__, 578 skb, txd_priv, frg_cnt); 579 if (unlikely(t_code)) { 580 fifo->stats.tx_errors++; 581 vxge_debug_tx(VXGE_ERR, 582 "%s: tx: dtr %p completed due to " 583 "error t_code %01x", fifo->ndev->name, 584 dtr, t_code); 585 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code); 586 } 587 588 /* for unfragmented skb */ 589 dma_unmap_single(&fifo->pdev->dev, txd_priv->dma_buffers[i++], 590 skb_headlen(skb), DMA_TO_DEVICE); 591 592 for (j = 0; j < frg_cnt; j++) { 593 dma_unmap_page(&fifo->pdev->dev, 594 txd_priv->dma_buffers[i++], 595 skb_frag_size(frag), DMA_TO_DEVICE); 596 frag += 1; 597 } 598 599 vxge_hw_fifo_txdl_free(fifo_hw, dtr); 600 601 /* Updating the statistics block */ 602 u64_stats_update_begin(&fifo->stats.syncp); 603 fifo->stats.tx_frms++; 604 fifo->stats.tx_bytes += skb->len; 605 u64_stats_update_end(&fifo->stats.syncp); 606 607 *done_skb++ = skb; 608 609 if (--nr_skb <= 0) { 610 *more = 1; 611 break; 612 } 613 614 pkt_cnt++; 615 if (pkt_cnt > fifo->indicate_max_pkts) 616 break; 617 618 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw, 619 &dtr, &t_code) == VXGE_HW_OK); 620 621 *skb_ptr = done_skb; 622 if (netif_tx_queue_stopped(fifo->txq)) 623 netif_tx_wake_queue(fifo->txq); 624 625 vxge_debug_entryexit(VXGE_TRACE, 626 "%s: %s:%d Exiting...", 627 fifo->ndev->name, __func__, __LINE__); 628 return VXGE_HW_OK; 629} 630 631/* select a vpath to transmit the packet */ 632static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb) 633{ 634 u16 queue_len, counter = 0; 635 if (skb->protocol == htons(ETH_P_IP)) { 636 struct iphdr *ip; 637 struct tcphdr *th; 638 639 ip = ip_hdr(skb); 640 641 if (!ip_is_fragment(ip)) { 642 th = (struct tcphdr *)(((unsigned char *)ip) + 643 ip->ihl*4); 644 645 queue_len = vdev->no_of_vpath; 646 counter = (ntohs(th->source) + 647 ntohs(th->dest)) & 648 vdev->vpath_selector[queue_len - 1]; 649 if (counter >= queue_len) 650 counter = queue_len - 1; 651 } 652 } 653 return counter; 654} 655 656static enum vxge_hw_status vxge_search_mac_addr_in_list( 657 struct vxge_vpath *vpath, u64 del_mac) 658{ 659 struct list_head *entry, *next; 660 list_for_each_safe(entry, next, &vpath->mac_addr_list) { 661 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) 662 return TRUE; 663 } 664 return FALSE; 665} 666 667static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac) 668{ 669 struct vxge_mac_addrs *new_mac_entry; 670 u8 *mac_address = NULL; 671 672 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT) 673 return TRUE; 674 675 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC); 676 if (!new_mac_entry) { 677 vxge_debug_mem(VXGE_ERR, 678 "%s: memory allocation failed", 679 VXGE_DRIVER_NAME); 680 return FALSE; 681 } 682 683 list_add(&new_mac_entry->item, &vpath->mac_addr_list); 684 685 /* Copy the new mac address to the list */ 686 mac_address = (u8 *)&new_mac_entry->macaddr; 687 memcpy(mac_address, mac->macaddr, ETH_ALEN); 688 689 new_mac_entry->state = mac->state; 690 vpath->mac_addr_cnt++; 691 692 if (is_multicast_ether_addr(mac->macaddr)) 693 vpath->mcast_addr_cnt++; 694 695 return TRUE; 696} 697 698/* Add a mac address to DA table */ 699static enum vxge_hw_status 700vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac) 701{ 702 enum vxge_hw_status status = VXGE_HW_OK; 703 struct vxge_vpath *vpath; 704 enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode; 705 706 if (is_multicast_ether_addr(mac->macaddr)) 707 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE; 708 else 709 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE; 710 711 vpath = &vdev->vpaths[mac->vpath_no]; 712 status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr, 713 mac->macmask, duplicate_mode); 714 if (status != VXGE_HW_OK) { 715 vxge_debug_init(VXGE_ERR, 716 "DA config add entry failed for vpath:%d", 717 vpath->device_id); 718 } else 719 if (FALSE == vxge_mac_list_add(vpath, mac)) 720 status = -EPERM; 721 722 return status; 723} 724 725static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header) 726{ 727 struct macInfo mac_info; 728 u8 *mac_address = NULL; 729 u64 mac_addr = 0, vpath_vector = 0; 730 int vpath_idx = 0; 731 enum vxge_hw_status status = VXGE_HW_OK; 732 struct vxge_vpath *vpath = NULL; 733 734 mac_address = (u8 *)&mac_addr; 735 memcpy(mac_address, mac_header, ETH_ALEN); 736 737 /* Is this mac address already in the list? */ 738 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { 739 vpath = &vdev->vpaths[vpath_idx]; 740 if (vxge_search_mac_addr_in_list(vpath, mac_addr)) 741 return vpath_idx; 742 } 743 744 memset(&mac_info, 0, sizeof(struct macInfo)); 745 memcpy(mac_info.macaddr, mac_header, ETH_ALEN); 746 747 /* Any vpath has room to add mac address to its da table? */ 748 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { 749 vpath = &vdev->vpaths[vpath_idx]; 750 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) { 751 /* Add this mac address to this vpath */ 752 mac_info.vpath_no = vpath_idx; 753 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; 754 status = vxge_add_mac_addr(vdev, &mac_info); 755 if (status != VXGE_HW_OK) 756 return -EPERM; 757 return vpath_idx; 758 } 759 } 760 761 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST; 762 vpath_idx = 0; 763 mac_info.vpath_no = vpath_idx; 764 /* Is the first vpath already selected as catch-basin ? */ 765 vpath = &vdev->vpaths[vpath_idx]; 766 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) { 767 /* Add this mac address to this vpath */ 768 if (FALSE == vxge_mac_list_add(vpath, &mac_info)) 769 return -EPERM; 770 return vpath_idx; 771 } 772 773 /* Select first vpath as catch-basin */ 774 vpath_vector = vxge_mBIT(vpath->device_id); 775 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh, 776 vxge_hw_mgmt_reg_type_mrpcim, 777 0, 778 (ulong)offsetof( 779 struct vxge_hw_mrpcim_reg, 780 rts_mgr_cbasin_cfg), 781 vpath_vector); 782 if (status != VXGE_HW_OK) { 783 vxge_debug_tx(VXGE_ERR, 784 "%s: Unable to set the vpath-%d in catch-basin mode", 785 VXGE_DRIVER_NAME, vpath->device_id); 786 return -EPERM; 787 } 788 789 if (FALSE == vxge_mac_list_add(vpath, &mac_info)) 790 return -EPERM; 791 792 return vpath_idx; 793} 794 795/** 796 * vxge_xmit 797 * @skb : the socket buffer containing the Tx data. 798 * @dev : device pointer. 799 * 800 * This function is the Tx entry point of the driver. Neterion NIC supports 801 * certain protocol assist features on Tx side, namely CSO, S/G, LSO. 802*/ 803static netdev_tx_t 804vxge_xmit(struct sk_buff *skb, struct net_device *dev) 805{ 806 struct vxge_fifo *fifo = NULL; 807 void *dtr_priv; 808 void *dtr = NULL; 809 struct vxgedev *vdev = NULL; 810 enum vxge_hw_status status; 811 int frg_cnt, first_frg_len; 812 skb_frag_t *frag; 813 int i = 0, j = 0, avail; 814 u64 dma_pointer; 815 struct vxge_tx_priv *txdl_priv = NULL; 816 struct __vxge_hw_fifo *fifo_hw; 817 int offload_type; 818 int vpath_no = 0; 819 820 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 821 dev->name, __func__, __LINE__); 822 823 /* A buffer with no data will be dropped */ 824 if (unlikely(skb->len <= 0)) { 825 vxge_debug_tx(VXGE_ERR, 826 "%s: Buffer has no data..", dev->name); 827 dev_kfree_skb_any(skb); 828 return NETDEV_TX_OK; 829 } 830 831 vdev = netdev_priv(dev); 832 833 if (unlikely(!is_vxge_card_up(vdev))) { 834 vxge_debug_tx(VXGE_ERR, 835 "%s: vdev not initialized", dev->name); 836 dev_kfree_skb_any(skb); 837 return NETDEV_TX_OK; 838 } 839 840 if (vdev->config.addr_learn_en) { 841 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN); 842 if (vpath_no == -EPERM) { 843 vxge_debug_tx(VXGE_ERR, 844 "%s: Failed to store the mac address", 845 dev->name); 846 dev_kfree_skb_any(skb); 847 return NETDEV_TX_OK; 848 } 849 } 850 851 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) 852 vpath_no = skb_get_queue_mapping(skb); 853 else if (vdev->config.tx_steering_type == TX_PORT_STEERING) 854 vpath_no = vxge_get_vpath_no(vdev, skb); 855 856 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no); 857 858 if (vpath_no >= vdev->no_of_vpath) 859 vpath_no = 0; 860 861 fifo = &vdev->vpaths[vpath_no].fifo; 862 fifo_hw = fifo->handle; 863 864 if (netif_tx_queue_stopped(fifo->txq)) 865 return NETDEV_TX_BUSY; 866 867 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw); 868 if (avail == 0) { 869 vxge_debug_tx(VXGE_ERR, 870 "%s: No free TXDs available", dev->name); 871 fifo->stats.txd_not_free++; 872 goto _exit0; 873 } 874 875 /* Last TXD? Stop tx queue to avoid dropping packets. TX 876 * completion will resume the queue. 877 */ 878 if (avail == 1) 879 netif_tx_stop_queue(fifo->txq); 880 881 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv); 882 if (unlikely(status != VXGE_HW_OK)) { 883 vxge_debug_tx(VXGE_ERR, 884 "%s: Out of descriptors .", dev->name); 885 fifo->stats.txd_out_of_desc++; 886 goto _exit0; 887 } 888 889 vxge_debug_tx(VXGE_TRACE, 890 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p", 891 dev->name, __func__, __LINE__, 892 fifo_hw, dtr, dtr_priv); 893 894 if (skb_vlan_tag_present(skb)) { 895 u16 vlan_tag = skb_vlan_tag_get(skb); 896 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag); 897 } 898 899 first_frg_len = skb_headlen(skb); 900 901 dma_pointer = dma_map_single(&fifo->pdev->dev, skb->data, 902 first_frg_len, DMA_TO_DEVICE); 903 904 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer))) { 905 vxge_hw_fifo_txdl_free(fifo_hw, dtr); 906 fifo->stats.pci_map_fail++; 907 goto _exit0; 908 } 909 910 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr); 911 txdl_priv->skb = skb; 912 txdl_priv->dma_buffers[j] = dma_pointer; 913 914 frg_cnt = skb_shinfo(skb)->nr_frags; 915 vxge_debug_tx(VXGE_TRACE, 916 "%s: %s:%d skb = %p txdl_priv = %p " 917 "frag_cnt = %d dma_pointer = 0x%llx", dev->name, 918 __func__, __LINE__, skb, txdl_priv, 919 frg_cnt, (unsigned long long)dma_pointer); 920 921 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer, 922 first_frg_len); 923 924 frag = &skb_shinfo(skb)->frags[0]; 925 for (i = 0; i < frg_cnt; i++) { 926 /* ignore 0 length fragment */ 927 if (!skb_frag_size(frag)) 928 continue; 929 930 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag, 931 0, skb_frag_size(frag), 932 DMA_TO_DEVICE); 933 934 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer))) 935 goto _exit2; 936 vxge_debug_tx(VXGE_TRACE, 937 "%s: %s:%d frag = %d dma_pointer = 0x%llx", 938 dev->name, __func__, __LINE__, i, 939 (unsigned long long)dma_pointer); 940 941 txdl_priv->dma_buffers[j] = dma_pointer; 942 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer, 943 skb_frag_size(frag)); 944 frag += 1; 945 } 946 947 offload_type = vxge_offload_type(skb); 948 949 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) { 950 int mss = vxge_tcp_mss(skb); 951 if (mss) { 952 vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d", 953 dev->name, __func__, __LINE__, mss); 954 vxge_hw_fifo_txdl_mss_set(dtr, mss); 955 } else { 956 vxge_assert(skb->len <= 957 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE); 958 vxge_assert(0); 959 goto _exit1; 960 } 961 } 962 963 if (skb->ip_summed == CHECKSUM_PARTIAL) 964 vxge_hw_fifo_txdl_cksum_set_bits(dtr, 965 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN | 966 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN | 967 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN); 968 969 vxge_hw_fifo_txdl_post(fifo_hw, dtr); 970 971 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...", 972 dev->name, __func__, __LINE__); 973 return NETDEV_TX_OK; 974 975_exit2: 976 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name); 977_exit1: 978 j = 0; 979 frag = &skb_shinfo(skb)->frags[0]; 980 981 dma_unmap_single(&fifo->pdev->dev, txdl_priv->dma_buffers[j++], 982 skb_headlen(skb), DMA_TO_DEVICE); 983 984 for (; j < i; j++) { 985 dma_unmap_page(&fifo->pdev->dev, txdl_priv->dma_buffers[j], 986 skb_frag_size(frag), DMA_TO_DEVICE); 987 frag += 1; 988 } 989 990 vxge_hw_fifo_txdl_free(fifo_hw, dtr); 991_exit0: 992 netif_tx_stop_queue(fifo->txq); 993 dev_kfree_skb_any(skb); 994 995 return NETDEV_TX_OK; 996} 997 998/* 999 * vxge_rx_term 1000 * 1001 * Function will be called by hw function to abort all outstanding receive 1002 * descriptors. 1003 */ 1004static void 1005vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata) 1006{ 1007 struct vxge_ring *ring = (struct vxge_ring *)userdata; 1008 struct vxge_rx_priv *rx_priv = 1009 vxge_hw_ring_rxd_private_get(dtrh); 1010 1011 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 1012 ring->ndev->name, __func__, __LINE__); 1013 if (state != VXGE_HW_RXD_STATE_POSTED) 1014 return; 1015 1016 dma_unmap_single(&ring->pdev->dev, rx_priv->data_dma, 1017 rx_priv->data_size, DMA_FROM_DEVICE); 1018 1019 dev_kfree_skb(rx_priv->skb); 1020 rx_priv->skb_data = NULL; 1021 1022 vxge_debug_entryexit(VXGE_TRACE, 1023 "%s: %s:%d Exiting...", 1024 ring->ndev->name, __func__, __LINE__); 1025} 1026 1027/* 1028 * vxge_tx_term 1029 * 1030 * Function will be called to abort all outstanding tx descriptors 1031 */ 1032static void 1033vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata) 1034{ 1035 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata; 1036 skb_frag_t *frag; 1037 int i = 0, j, frg_cnt; 1038 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh); 1039 struct sk_buff *skb = txd_priv->skb; 1040 1041 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); 1042 1043 if (state != VXGE_HW_TXDL_STATE_POSTED) 1044 return; 1045 1046 /* check skb validity */ 1047 vxge_assert(skb); 1048 frg_cnt = skb_shinfo(skb)->nr_frags; 1049 frag = &skb_shinfo(skb)->frags[0]; 1050 1051 /* for unfragmented skb */ 1052 dma_unmap_single(&fifo->pdev->dev, txd_priv->dma_buffers[i++], 1053 skb_headlen(skb), DMA_TO_DEVICE); 1054 1055 for (j = 0; j < frg_cnt; j++) { 1056 dma_unmap_page(&fifo->pdev->dev, txd_priv->dma_buffers[i++], 1057 skb_frag_size(frag), DMA_TO_DEVICE); 1058 frag += 1; 1059 } 1060 1061 dev_kfree_skb(skb); 1062 1063 vxge_debug_entryexit(VXGE_TRACE, 1064 "%s:%d Exiting...", __func__, __LINE__); 1065} 1066 1067static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac) 1068{ 1069 struct list_head *entry, *next; 1070 u64 del_mac = 0; 1071 u8 *mac_address = (u8 *) (&del_mac); 1072 1073 /* Copy the mac address to delete from the list */ 1074 memcpy(mac_address, mac->macaddr, ETH_ALEN); 1075 1076 list_for_each_safe(entry, next, &vpath->mac_addr_list) { 1077 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) { 1078 list_del(entry); 1079 kfree(entry); 1080 vpath->mac_addr_cnt--; 1081 1082 if (is_multicast_ether_addr(mac->macaddr)) 1083 vpath->mcast_addr_cnt--; 1084 return TRUE; 1085 } 1086 } 1087 1088 return FALSE; 1089} 1090 1091/* delete a mac address from DA table */ 1092static enum vxge_hw_status 1093vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac) 1094{ 1095 enum vxge_hw_status status = VXGE_HW_OK; 1096 struct vxge_vpath *vpath; 1097 1098 vpath = &vdev->vpaths[mac->vpath_no]; 1099 status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr, 1100 mac->macmask); 1101 if (status != VXGE_HW_OK) { 1102 vxge_debug_init(VXGE_ERR, 1103 "DA config delete entry failed for vpath:%d", 1104 vpath->device_id); 1105 } else 1106 vxge_mac_list_del(vpath, mac); 1107 return status; 1108} 1109 1110/** 1111 * vxge_set_multicast 1112 * @dev: pointer to the device structure 1113 * 1114 * Entry point for multicast address enable/disable 1115 * This function is a driver entry point which gets called by the kernel 1116 * whenever multicast addresses must be enabled/disabled. This also gets 1117 * called to set/reset promiscuous mode. Depending on the deivce flag, we 1118 * determine, if multicast address must be enabled or if promiscuous mode 1119 * is to be disabled etc. 1120 */ 1121static void vxge_set_multicast(struct net_device *dev) 1122{ 1123 struct netdev_hw_addr *ha; 1124 struct vxgedev *vdev; 1125 int i, mcast_cnt = 0; 1126 struct vxge_vpath *vpath; 1127 enum vxge_hw_status status = VXGE_HW_OK; 1128 struct macInfo mac_info; 1129 int vpath_idx = 0; 1130 struct vxge_mac_addrs *mac_entry; 1131 struct list_head *list_head; 1132 struct list_head *entry, *next; 1133 u8 *mac_address = NULL; 1134 1135 vxge_debug_entryexit(VXGE_TRACE, 1136 "%s:%d", __func__, __LINE__); 1137 1138 vdev = netdev_priv(dev); 1139 1140 if (unlikely(!is_vxge_card_up(vdev))) 1141 return; 1142 1143 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) { 1144 for (i = 0; i < vdev->no_of_vpath; i++) { 1145 vpath = &vdev->vpaths[i]; 1146 vxge_assert(vpath->is_open); 1147 status = vxge_hw_vpath_mcast_enable(vpath->handle); 1148 if (status != VXGE_HW_OK) 1149 vxge_debug_init(VXGE_ERR, "failed to enable " 1150 "multicast, status %d", status); 1151 vdev->all_multi_flg = 1; 1152 } 1153 } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) { 1154 for (i = 0; i < vdev->no_of_vpath; i++) { 1155 vpath = &vdev->vpaths[i]; 1156 vxge_assert(vpath->is_open); 1157 status = vxge_hw_vpath_mcast_disable(vpath->handle); 1158 if (status != VXGE_HW_OK) 1159 vxge_debug_init(VXGE_ERR, "failed to disable " 1160 "multicast, status %d", status); 1161 vdev->all_multi_flg = 0; 1162 } 1163 } 1164 1165 1166 if (!vdev->config.addr_learn_en) { 1167 for (i = 0; i < vdev->no_of_vpath; i++) { 1168 vpath = &vdev->vpaths[i]; 1169 vxge_assert(vpath->is_open); 1170 1171 if (dev->flags & IFF_PROMISC) 1172 status = vxge_hw_vpath_promisc_enable( 1173 vpath->handle); 1174 else 1175 status = vxge_hw_vpath_promisc_disable( 1176 vpath->handle); 1177 if (status != VXGE_HW_OK) 1178 vxge_debug_init(VXGE_ERR, "failed to %s promisc" 1179 ", status %d", dev->flags&IFF_PROMISC ? 1180 "enable" : "disable", status); 1181 } 1182 } 1183 1184 memset(&mac_info, 0, sizeof(struct macInfo)); 1185 /* Update individual M_CAST address list */ 1186 if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) { 1187 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt; 1188 list_head = &vdev->vpaths[0].mac_addr_list; 1189 if ((netdev_mc_count(dev) + 1190 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) > 1191 vdev->vpaths[0].max_mac_addr_cnt) 1192 goto _set_all_mcast; 1193 1194 /* Delete previous MC's */ 1195 for (i = 0; i < mcast_cnt; i++) { 1196 list_for_each_safe(entry, next, list_head) { 1197 mac_entry = (struct vxge_mac_addrs *)entry; 1198 /* Copy the mac address to delete */ 1199 mac_address = (u8 *)&mac_entry->macaddr; 1200 memcpy(mac_info.macaddr, mac_address, ETH_ALEN); 1201 1202 if (is_multicast_ether_addr(mac_info.macaddr)) { 1203 for (vpath_idx = 0; vpath_idx < 1204 vdev->no_of_vpath; 1205 vpath_idx++) { 1206 mac_info.vpath_no = vpath_idx; 1207 status = vxge_del_mac_addr( 1208 vdev, 1209 &mac_info); 1210 } 1211 } 1212 } 1213 } 1214 1215 /* Add new ones */ 1216 netdev_for_each_mc_addr(ha, dev) { 1217 memcpy(mac_info.macaddr, ha->addr, ETH_ALEN); 1218 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; 1219 vpath_idx++) { 1220 mac_info.vpath_no = vpath_idx; 1221 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; 1222 status = vxge_add_mac_addr(vdev, &mac_info); 1223 if (status != VXGE_HW_OK) { 1224 vxge_debug_init(VXGE_ERR, 1225 "%s:%d Setting individual" 1226 "multicast address failed", 1227 __func__, __LINE__); 1228 goto _set_all_mcast; 1229 } 1230 } 1231 } 1232 1233 return; 1234_set_all_mcast: 1235 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt; 1236 /* Delete previous MC's */ 1237 for (i = 0; i < mcast_cnt; i++) { 1238 list_for_each_safe(entry, next, list_head) { 1239 mac_entry = (struct vxge_mac_addrs *)entry; 1240 /* Copy the mac address to delete */ 1241 mac_address = (u8 *)&mac_entry->macaddr; 1242 memcpy(mac_info.macaddr, mac_address, ETH_ALEN); 1243 1244 if (is_multicast_ether_addr(mac_info.macaddr)) 1245 break; 1246 } 1247 1248 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; 1249 vpath_idx++) { 1250 mac_info.vpath_no = vpath_idx; 1251 status = vxge_del_mac_addr(vdev, &mac_info); 1252 } 1253 } 1254 1255 /* Enable all multicast */ 1256 for (i = 0; i < vdev->no_of_vpath; i++) { 1257 vpath = &vdev->vpaths[i]; 1258 vxge_assert(vpath->is_open); 1259 1260 status = vxge_hw_vpath_mcast_enable(vpath->handle); 1261 if (status != VXGE_HW_OK) { 1262 vxge_debug_init(VXGE_ERR, 1263 "%s:%d Enabling all multicasts failed", 1264 __func__, __LINE__); 1265 } 1266 vdev->all_multi_flg = 1; 1267 } 1268 dev->flags |= IFF_ALLMULTI; 1269 } 1270 1271 vxge_debug_entryexit(VXGE_TRACE, 1272 "%s:%d Exiting...", __func__, __LINE__); 1273} 1274 1275/** 1276 * vxge_set_mac_addr 1277 * @dev: pointer to the device structure 1278 * @p: socket info 1279 * 1280 * Update entry "0" (default MAC addr) 1281 */ 1282static int vxge_set_mac_addr(struct net_device *dev, void *p) 1283{ 1284 struct sockaddr *addr = p; 1285 struct vxgedev *vdev; 1286 enum vxge_hw_status status = VXGE_HW_OK; 1287 struct macInfo mac_info_new, mac_info_old; 1288 int vpath_idx = 0; 1289 1290 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); 1291 1292 vdev = netdev_priv(dev); 1293 1294 if (!is_valid_ether_addr(addr->sa_data)) 1295 return -EINVAL; 1296 1297 memset(&mac_info_new, 0, sizeof(struct macInfo)); 1298 memset(&mac_info_old, 0, sizeof(struct macInfo)); 1299 1300 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...", 1301 __func__, __LINE__); 1302 1303 /* Get the old address */ 1304 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len); 1305 1306 /* Copy the new address */ 1307 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len); 1308 1309 /* First delete the old mac address from all the vpaths 1310 as we can't specify the index while adding new mac address */ 1311 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { 1312 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx]; 1313 if (!vpath->is_open) { 1314 /* This can happen when this interface is added/removed 1315 to the bonding interface. Delete this station address 1316 from the linked list */ 1317 vxge_mac_list_del(vpath, &mac_info_old); 1318 1319 /* Add this new address to the linked list 1320 for later restoring */ 1321 vxge_mac_list_add(vpath, &mac_info_new); 1322 1323 continue; 1324 } 1325 /* Delete the station address */ 1326 mac_info_old.vpath_no = vpath_idx; 1327 status = vxge_del_mac_addr(vdev, &mac_info_old); 1328 } 1329 1330 if (unlikely(!is_vxge_card_up(vdev))) { 1331 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); 1332 return VXGE_HW_OK; 1333 } 1334 1335 /* Set this mac address to all the vpaths */ 1336 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { 1337 mac_info_new.vpath_no = vpath_idx; 1338 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; 1339 status = vxge_add_mac_addr(vdev, &mac_info_new); 1340 if (status != VXGE_HW_OK) 1341 return -EINVAL; 1342 } 1343 1344 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); 1345 1346 return status; 1347} 1348 1349/* 1350 * vxge_vpath_intr_enable 1351 * @vdev: pointer to vdev 1352 * @vp_id: vpath for which to enable the interrupts 1353 * 1354 * Enables the interrupts for the vpath 1355*/ 1356static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id) 1357{ 1358 struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; 1359 int msix_id = 0; 1360 int tim_msix_id[4] = {0, 1, 0, 0}; 1361 int alarm_msix_id = VXGE_ALARM_MSIX_ID; 1362 1363 vxge_hw_vpath_intr_enable(vpath->handle); 1364 1365 if (vdev->config.intr_type == INTA) 1366 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle); 1367 else { 1368 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id, 1369 alarm_msix_id); 1370 1371 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE; 1372 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id); 1373 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1); 1374 1375 /* enable the alarm vector */ 1376 msix_id = (vpath->handle->vpath->hldev->first_vp_id * 1377 VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id; 1378 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id); 1379 } 1380} 1381 1382/* 1383 * vxge_vpath_intr_disable 1384 * @vdev: pointer to vdev 1385 * @vp_id: vpath for which to disable the interrupts 1386 * 1387 * Disables the interrupts for the vpath 1388*/ 1389static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id) 1390{ 1391 struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; 1392 struct __vxge_hw_device *hldev; 1393 int msix_id; 1394 1395 hldev = pci_get_drvdata(vdev->pdev); 1396 1397 vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id); 1398 1399 vxge_hw_vpath_intr_disable(vpath->handle); 1400 1401 if (vdev->config.intr_type == INTA) 1402 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle); 1403 else { 1404 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE; 1405 vxge_hw_vpath_msix_mask(vpath->handle, msix_id); 1406 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1); 1407 1408 /* disable the alarm vector */ 1409 msix_id = (vpath->handle->vpath->hldev->first_vp_id * 1410 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; 1411 vxge_hw_vpath_msix_mask(vpath->handle, msix_id); 1412 } 1413} 1414 1415/* list all mac addresses from DA table */ 1416static enum vxge_hw_status 1417vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac) 1418{ 1419 enum vxge_hw_status status = VXGE_HW_OK; 1420 unsigned char macmask[ETH_ALEN]; 1421 unsigned char macaddr[ETH_ALEN]; 1422 1423 status = vxge_hw_vpath_mac_addr_get(vpath->handle, 1424 macaddr, macmask); 1425 if (status != VXGE_HW_OK) { 1426 vxge_debug_init(VXGE_ERR, 1427 "DA config list entry failed for vpath:%d", 1428 vpath->device_id); 1429 return status; 1430 } 1431 1432 while (!ether_addr_equal(mac->macaddr, macaddr)) { 1433 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle, 1434 macaddr, macmask); 1435 if (status != VXGE_HW_OK) 1436 break; 1437 } 1438 1439 return status; 1440} 1441 1442/* Store all mac addresses from the list to the DA table */ 1443static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath) 1444{ 1445 enum vxge_hw_status status = VXGE_HW_OK; 1446 struct macInfo mac_info; 1447 u8 *mac_address = NULL; 1448 struct list_head *entry, *next; 1449 1450 memset(&mac_info, 0, sizeof(struct macInfo)); 1451 1452 if (vpath->is_open) { 1453 list_for_each_safe(entry, next, &vpath->mac_addr_list) { 1454 mac_address = 1455 (u8 *)& 1456 ((struct vxge_mac_addrs *)entry)->macaddr; 1457 memcpy(mac_info.macaddr, mac_address, ETH_ALEN); 1458 ((struct vxge_mac_addrs *)entry)->state = 1459 VXGE_LL_MAC_ADDR_IN_DA_TABLE; 1460 /* does this mac address already exist in da table? */ 1461 status = vxge_search_mac_addr_in_da_table(vpath, 1462 &mac_info); 1463 if (status != VXGE_HW_OK) { 1464 /* Add this mac address to the DA table */ 1465 status = vxge_hw_vpath_mac_addr_add( 1466 vpath->handle, mac_info.macaddr, 1467 mac_info.macmask, 1468 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE); 1469 if (status != VXGE_HW_OK) { 1470 vxge_debug_init(VXGE_ERR, 1471 "DA add entry failed for vpath:%d", 1472 vpath->device_id); 1473 ((struct vxge_mac_addrs *)entry)->state 1474 = VXGE_LL_MAC_ADDR_IN_LIST; 1475 } 1476 } 1477 } 1478 } 1479 1480 return status; 1481} 1482 1483/* Store all vlan ids from the list to the vid table */ 1484static enum vxge_hw_status 1485vxge_restore_vpath_vid_table(struct vxge_vpath *vpath) 1486{ 1487 enum vxge_hw_status status = VXGE_HW_OK; 1488 struct vxgedev *vdev = vpath->vdev; 1489 u16 vid; 1490 1491 if (!vpath->is_open) 1492 return status; 1493 1494 for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID) 1495 status = vxge_hw_vpath_vid_add(vpath->handle, vid); 1496 1497 return status; 1498} 1499 1500/* 1501 * vxge_reset_vpath 1502 * @vdev: pointer to vdev 1503 * @vp_id: vpath to reset 1504 * 1505 * Resets the vpath 1506*/ 1507static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id) 1508{ 1509 enum vxge_hw_status status = VXGE_HW_OK; 1510 struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; 1511 int ret = 0; 1512 1513 /* check if device is down already */ 1514 if (unlikely(!is_vxge_card_up(vdev))) 1515 return 0; 1516 1517 /* is device reset already scheduled */ 1518 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) 1519 return 0; 1520 1521 if (vpath->handle) { 1522 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) { 1523 if (is_vxge_card_up(vdev) && 1524 vxge_hw_vpath_recover_from_reset(vpath->handle) 1525 != VXGE_HW_OK) { 1526 vxge_debug_init(VXGE_ERR, 1527 "vxge_hw_vpath_recover_from_reset" 1528 "failed for vpath:%d", vp_id); 1529 return status; 1530 } 1531 } else { 1532 vxge_debug_init(VXGE_ERR, 1533 "vxge_hw_vpath_reset failed for" 1534 "vpath:%d", vp_id); 1535 return status; 1536 } 1537 } else 1538 return VXGE_HW_FAIL; 1539 1540 vxge_restore_vpath_mac_addr(vpath); 1541 vxge_restore_vpath_vid_table(vpath); 1542 1543 /* Enable all broadcast */ 1544 vxge_hw_vpath_bcast_enable(vpath->handle); 1545 1546 /* Enable all multicast */ 1547 if (vdev->all_multi_flg) { 1548 status = vxge_hw_vpath_mcast_enable(vpath->handle); 1549 if (status != VXGE_HW_OK) 1550 vxge_debug_init(VXGE_ERR, 1551 "%s:%d Enabling multicast failed", 1552 __func__, __LINE__); 1553 } 1554 1555 /* Enable the interrupts */ 1556 vxge_vpath_intr_enable(vdev, vp_id); 1557 1558 smp_wmb(); 1559 1560 /* Enable the flow of traffic through the vpath */ 1561 vxge_hw_vpath_enable(vpath->handle); 1562 1563 smp_wmb(); 1564 vxge_hw_vpath_rx_doorbell_init(vpath->handle); 1565 vpath->ring.last_status = VXGE_HW_OK; 1566 1567 /* Vpath reset done */ 1568 clear_bit(vp_id, &vdev->vp_reset); 1569 1570 /* Start the vpath queue */ 1571 if (netif_tx_queue_stopped(vpath->fifo.txq)) 1572 netif_tx_wake_queue(vpath->fifo.txq); 1573 1574 return ret; 1575} 1576 1577/* Configure CI */ 1578static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev) 1579{ 1580 int i = 0; 1581 1582 /* Enable CI for RTI */ 1583 if (vdev->config.intr_type == MSI_X) { 1584 for (i = 0; i < vdev->no_of_vpath; i++) { 1585 struct __vxge_hw_ring *hw_ring; 1586 1587 hw_ring = vdev->vpaths[i].ring.handle; 1588 vxge_hw_vpath_dynamic_rti_ci_set(hw_ring); 1589 } 1590 } 1591 1592 /* Enable CI for TTI */ 1593 for (i = 0; i < vdev->no_of_vpath; i++) { 1594 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle; 1595 vxge_hw_vpath_tti_ci_set(hw_fifo); 1596 /* 1597 * For Inta (with or without napi), Set CI ON for only one 1598 * vpath. (Have only one free running timer). 1599 */ 1600 if ((vdev->config.intr_type == INTA) && (i == 0)) 1601 break; 1602 } 1603 1604 return; 1605} 1606 1607static int do_vxge_reset(struct vxgedev *vdev, int event) 1608{ 1609 enum vxge_hw_status status; 1610 int ret = 0, vp_id, i; 1611 1612 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); 1613 1614 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) { 1615 /* check if device is down already */ 1616 if (unlikely(!is_vxge_card_up(vdev))) 1617 return 0; 1618 1619 /* is reset already scheduled */ 1620 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) 1621 return 0; 1622 } 1623 1624 if (event == VXGE_LL_FULL_RESET) { 1625 netif_carrier_off(vdev->ndev); 1626 1627 /* wait for all the vpath reset to complete */ 1628 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { 1629 while (test_bit(vp_id, &vdev->vp_reset)) 1630 msleep(50); 1631 } 1632 1633 netif_carrier_on(vdev->ndev); 1634 1635 /* if execution mode is set to debug, don't reset the adapter */ 1636 if (unlikely(vdev->exec_mode)) { 1637 vxge_debug_init(VXGE_ERR, 1638 "%s: execution mode is debug, returning..", 1639 vdev->ndev->name); 1640 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); 1641 netif_tx_stop_all_queues(vdev->ndev); 1642 return 0; 1643 } 1644 } 1645 1646 if (event == VXGE_LL_FULL_RESET) { 1647 vxge_hw_device_wait_receive_idle(vdev->devh); 1648 vxge_hw_device_intr_disable(vdev->devh); 1649 1650 switch (vdev->cric_err_event) { 1651 case VXGE_HW_EVENT_UNKNOWN: 1652 netif_tx_stop_all_queues(vdev->ndev); 1653 vxge_debug_init(VXGE_ERR, 1654 "fatal: %s: Disabling device due to" 1655 "unknown error", 1656 vdev->ndev->name); 1657 ret = -EPERM; 1658 goto out; 1659 case VXGE_HW_EVENT_RESET_START: 1660 break; 1661 case VXGE_HW_EVENT_RESET_COMPLETE: 1662 case VXGE_HW_EVENT_LINK_DOWN: 1663 case VXGE_HW_EVENT_LINK_UP: 1664 case VXGE_HW_EVENT_ALARM_CLEARED: 1665 case VXGE_HW_EVENT_ECCERR: 1666 case VXGE_HW_EVENT_MRPCIM_ECCERR: 1667 ret = -EPERM; 1668 goto out; 1669 case VXGE_HW_EVENT_FIFO_ERR: 1670 case VXGE_HW_EVENT_VPATH_ERR: 1671 break; 1672 case VXGE_HW_EVENT_CRITICAL_ERR: 1673 netif_tx_stop_all_queues(vdev->ndev); 1674 vxge_debug_init(VXGE_ERR, 1675 "fatal: %s: Disabling device due to" 1676 "serious error", 1677 vdev->ndev->name); 1678 /* SOP or device reset required */ 1679 /* This event is not currently used */ 1680 ret = -EPERM; 1681 goto out; 1682 case VXGE_HW_EVENT_SERR: 1683 netif_tx_stop_all_queues(vdev->ndev); 1684 vxge_debug_init(VXGE_ERR, 1685 "fatal: %s: Disabling device due to" 1686 "serious error", 1687 vdev->ndev->name); 1688 ret = -EPERM; 1689 goto out; 1690 case VXGE_HW_EVENT_SRPCIM_SERR: 1691 case VXGE_HW_EVENT_MRPCIM_SERR: 1692 ret = -EPERM; 1693 goto out; 1694 case VXGE_HW_EVENT_SLOT_FREEZE: 1695 netif_tx_stop_all_queues(vdev->ndev); 1696 vxge_debug_init(VXGE_ERR, 1697 "fatal: %s: Disabling device due to" 1698 "slot freeze", 1699 vdev->ndev->name); 1700 ret = -EPERM; 1701 goto out; 1702 default: 1703 break; 1704 1705 } 1706 } 1707 1708 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) 1709 netif_tx_stop_all_queues(vdev->ndev); 1710 1711 if (event == VXGE_LL_FULL_RESET) { 1712 status = vxge_reset_all_vpaths(vdev); 1713 if (status != VXGE_HW_OK) { 1714 vxge_debug_init(VXGE_ERR, 1715 "fatal: %s: can not reset vpaths", 1716 vdev->ndev->name); 1717 ret = -EPERM; 1718 goto out; 1719 } 1720 } 1721 1722 if (event == VXGE_LL_COMPL_RESET) { 1723 for (i = 0; i < vdev->no_of_vpath; i++) 1724 if (vdev->vpaths[i].handle) { 1725 if (vxge_hw_vpath_recover_from_reset( 1726 vdev->vpaths[i].handle) 1727 != VXGE_HW_OK) { 1728 vxge_debug_init(VXGE_ERR, 1729 "vxge_hw_vpath_recover_" 1730 "from_reset failed for vpath: " 1731 "%d", i); 1732 ret = -EPERM; 1733 goto out; 1734 } 1735 } else { 1736 vxge_debug_init(VXGE_ERR, 1737 "vxge_hw_vpath_reset failed for " 1738 "vpath:%d", i); 1739 ret = -EPERM; 1740 goto out; 1741 } 1742 } 1743 1744 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) { 1745 /* Reprogram the DA table with populated mac addresses */ 1746 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { 1747 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]); 1748 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]); 1749 } 1750 1751 /* enable vpath interrupts */ 1752 for (i = 0; i < vdev->no_of_vpath; i++) 1753 vxge_vpath_intr_enable(vdev, i); 1754 1755 vxge_hw_device_intr_enable(vdev->devh); 1756 1757 smp_wmb(); 1758 1759 /* Indicate card up */ 1760 set_bit(__VXGE_STATE_CARD_UP, &vdev->state); 1761 1762 /* Get the traffic to flow through the vpaths */ 1763 for (i = 0; i < vdev->no_of_vpath; i++) { 1764 vxge_hw_vpath_enable(vdev->vpaths[i].handle); 1765 smp_wmb(); 1766 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle); 1767 } 1768 1769 netif_tx_wake_all_queues(vdev->ndev); 1770 } 1771 1772 /* configure CI */ 1773 vxge_config_ci_for_tti_rti(vdev); 1774 1775out: 1776 vxge_debug_entryexit(VXGE_TRACE, 1777 "%s:%d Exiting...", __func__, __LINE__); 1778 1779 /* Indicate reset done */ 1780 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) 1781 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state); 1782 return ret; 1783} 1784 1785/* 1786 * vxge_reset 1787 * @vdev: pointer to ll device 1788 * 1789 * driver may reset the chip on events of serr, eccerr, etc 1790 */ 1791static void vxge_reset(struct work_struct *work) 1792{ 1793 struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task); 1794 1795 if (!netif_running(vdev->ndev)) 1796 return; 1797 1798 do_vxge_reset(vdev, VXGE_LL_FULL_RESET); 1799} 1800 1801/** 1802 * vxge_poll - Receive handler when Receive Polling is used. 1803 * @napi: pointer to the napi structure. 1804 * @budget: Number of packets budgeted to be processed in this iteration. 1805 * 1806 * This function comes into picture only if Receive side is being handled 1807 * through polling (called NAPI in linux). It mostly does what the normal 1808 * Rx interrupt handler does in terms of descriptor and packet processing 1809 * but not in an interrupt context. Also it will process a specified number 1810 * of packets at most in one iteration. This value is passed down by the 1811 * kernel as the function argument 'budget'. 1812 */ 1813static int vxge_poll_msix(struct napi_struct *napi, int budget) 1814{ 1815 struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi); 1816 int pkts_processed; 1817 int budget_org = budget; 1818 1819 ring->budget = budget; 1820 ring->pkts_processed = 0; 1821 vxge_hw_vpath_poll_rx(ring->handle); 1822 pkts_processed = ring->pkts_processed; 1823 1824 if (pkts_processed < budget_org) { 1825 napi_complete_done(napi, pkts_processed); 1826 1827 /* Re enable the Rx interrupts for the vpath */ 1828 vxge_hw_channel_msix_unmask( 1829 (struct __vxge_hw_channel *)ring->handle, 1830 ring->rx_vector_no); 1831 } 1832 1833 /* We are copying and returning the local variable, in case if after 1834 * clearing the msix interrupt above, if the interrupt fires right 1835 * away which can preempt this NAPI thread */ 1836 return pkts_processed; 1837} 1838 1839static int vxge_poll_inta(struct napi_struct *napi, int budget) 1840{ 1841 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi); 1842 int pkts_processed = 0; 1843 int i; 1844 int budget_org = budget; 1845 struct vxge_ring *ring; 1846 1847 struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev); 1848 1849 for (i = 0; i < vdev->no_of_vpath; i++) { 1850 ring = &vdev->vpaths[i].ring; 1851 ring->budget = budget; 1852 ring->pkts_processed = 0; 1853 vxge_hw_vpath_poll_rx(ring->handle); 1854 pkts_processed += ring->pkts_processed; 1855 budget -= ring->pkts_processed; 1856 if (budget <= 0) 1857 break; 1858 } 1859 1860 VXGE_COMPLETE_ALL_TX(vdev); 1861 1862 if (pkts_processed < budget_org) { 1863 napi_complete_done(napi, pkts_processed); 1864 /* Re enable the Rx interrupts for the ring */ 1865 vxge_hw_device_unmask_all(hldev); 1866 vxge_hw_device_flush_io(hldev); 1867 } 1868 1869 return pkts_processed; 1870} 1871 1872#ifdef CONFIG_NET_POLL_CONTROLLER 1873/** 1874 * vxge_netpoll - netpoll event handler entry point 1875 * @dev : pointer to the device structure. 1876 * Description: 1877 * This function will be called by upper layer to check for events on the 1878 * interface in situations where interrupts are disabled. It is used for 1879 * specific in-kernel networking tasks, such as remote consoles and kernel 1880 * debugging over the network (example netdump in RedHat). 1881 */ 1882static void vxge_netpoll(struct net_device *dev) 1883{ 1884 struct vxgedev *vdev = netdev_priv(dev); 1885 struct pci_dev *pdev = vdev->pdev; 1886 struct __vxge_hw_device *hldev = pci_get_drvdata(pdev); 1887 const int irq = pdev->irq; 1888 1889 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); 1890 1891 if (pci_channel_offline(pdev)) 1892 return; 1893 1894 disable_irq(irq); 1895 vxge_hw_device_clear_tx_rx(hldev); 1896 1897 vxge_hw_device_clear_tx_rx(hldev); 1898 VXGE_COMPLETE_ALL_RX(vdev); 1899 VXGE_COMPLETE_ALL_TX(vdev); 1900 1901 enable_irq(irq); 1902 1903 vxge_debug_entryexit(VXGE_TRACE, 1904 "%s:%d Exiting...", __func__, __LINE__); 1905} 1906#endif 1907 1908/* RTH configuration */ 1909static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev) 1910{ 1911 enum vxge_hw_status status = VXGE_HW_OK; 1912 struct vxge_hw_rth_hash_types hash_types; 1913 u8 itable[256] = {0}; /* indirection table */ 1914 u8 mtable[256] = {0}; /* CPU to vpath mapping */ 1915 int index; 1916 1917 /* 1918 * Filling 1919 * - itable with bucket numbers 1920 * - mtable with bucket-to-vpath mapping 1921 */ 1922 for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) { 1923 itable[index] = index; 1924 mtable[index] = index % vdev->no_of_vpath; 1925 } 1926 1927 /* set indirection table, bucket-to-vpath mapping */ 1928 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles, 1929 vdev->no_of_vpath, 1930 mtable, itable, 1931 vdev->config.rth_bkt_sz); 1932 if (status != VXGE_HW_OK) { 1933 vxge_debug_init(VXGE_ERR, 1934 "RTH indirection table configuration failed " 1935 "for vpath:%d", vdev->vpaths[0].device_id); 1936 return status; 1937 } 1938 1939 /* Fill RTH hash types */ 1940 hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4; 1941 hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4; 1942 hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6; 1943 hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6; 1944 hash_types.hash_type_tcpipv6ex_en = 1945 vdev->config.rth_hash_type_tcpipv6ex; 1946 hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex; 1947 1948 /* 1949 * Because the itable_set() method uses the active_table field 1950 * for the target virtual path the RTH config should be updated 1951 * for all VPATHs. The h/w only uses the lowest numbered VPATH 1952 * when steering frames. 1953 */ 1954 for (index = 0; index < vdev->no_of_vpath; index++) { 1955 status = vxge_hw_vpath_rts_rth_set( 1956 vdev->vpaths[index].handle, 1957 vdev->config.rth_algorithm, 1958 &hash_types, 1959 vdev->config.rth_bkt_sz); 1960 if (status != VXGE_HW_OK) { 1961 vxge_debug_init(VXGE_ERR, 1962 "RTH configuration failed for vpath:%d", 1963 vdev->vpaths[index].device_id); 1964 return status; 1965 } 1966 } 1967 1968 return status; 1969} 1970 1971/* reset vpaths */ 1972static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev) 1973{ 1974 enum vxge_hw_status status = VXGE_HW_OK; 1975 struct vxge_vpath *vpath; 1976 int i; 1977 1978 for (i = 0; i < vdev->no_of_vpath; i++) { 1979 vpath = &vdev->vpaths[i]; 1980 if (vpath->handle) { 1981 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) { 1982 if (is_vxge_card_up(vdev) && 1983 vxge_hw_vpath_recover_from_reset( 1984 vpath->handle) != VXGE_HW_OK) { 1985 vxge_debug_init(VXGE_ERR, 1986 "vxge_hw_vpath_recover_" 1987 "from_reset failed for vpath: " 1988 "%d", i); 1989 return status; 1990 } 1991 } else { 1992 vxge_debug_init(VXGE_ERR, 1993 "vxge_hw_vpath_reset failed for " 1994 "vpath:%d", i); 1995 return status; 1996 } 1997 } 1998 } 1999 2000 return status; 2001} 2002 2003/* close vpaths */ 2004static void vxge_close_vpaths(struct vxgedev *vdev, int index) 2005{ 2006 struct vxge_vpath *vpath; 2007 int i; 2008 2009 for (i = index; i < vdev->no_of_vpath; i++) { 2010 vpath = &vdev->vpaths[i]; 2011 2012 if (vpath->handle && vpath->is_open) { 2013 vxge_hw_vpath_close(vpath->handle); 2014 vdev->stats.vpaths_open--; 2015 } 2016 vpath->is_open = 0; 2017 vpath->handle = NULL; 2018 } 2019} 2020 2021/* open vpaths */ 2022static int vxge_open_vpaths(struct vxgedev *vdev) 2023{ 2024 struct vxge_hw_vpath_attr attr; 2025 enum vxge_hw_status status; 2026 struct vxge_vpath *vpath; 2027 u32 vp_id = 0; 2028 int i; 2029 2030 for (i = 0; i < vdev->no_of_vpath; i++) { 2031 vpath = &vdev->vpaths[i]; 2032 vxge_assert(vpath->is_configured); 2033 2034 if (!vdev->titan1) { 2035 struct vxge_hw_vp_config *vcfg; 2036 vcfg = &vdev->devh->config.vp_config[vpath->device_id]; 2037 2038 vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A; 2039 vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B; 2040 vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C; 2041 vcfg->tti.uec_a = TTI_T1A_TX_UFC_A; 2042 vcfg->tti.uec_b = TTI_T1A_TX_UFC_B; 2043 vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu); 2044 vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu); 2045 vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL; 2046 vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL; 2047 } 2048 2049 attr.vp_id = vpath->device_id; 2050 attr.fifo_attr.callback = vxge_xmit_compl; 2051 attr.fifo_attr.txdl_term = vxge_tx_term; 2052 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv); 2053 attr.fifo_attr.userdata = &vpath->fifo; 2054 2055 attr.ring_attr.callback = vxge_rx_1b_compl; 2056 attr.ring_attr.rxd_init = vxge_rx_initial_replenish; 2057 attr.ring_attr.rxd_term = vxge_rx_term; 2058 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv); 2059 attr.ring_attr.userdata = &vpath->ring; 2060 2061 vpath->ring.ndev = vdev->ndev; 2062 vpath->ring.pdev = vdev->pdev; 2063 2064 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle); 2065 if (status == VXGE_HW_OK) { 2066 vpath->fifo.handle = 2067 (struct __vxge_hw_fifo *)attr.fifo_attr.userdata; 2068 vpath->ring.handle = 2069 (struct __vxge_hw_ring *)attr.ring_attr.userdata; 2070 vpath->fifo.tx_steering_type = 2071 vdev->config.tx_steering_type; 2072 vpath->fifo.ndev = vdev->ndev; 2073 vpath->fifo.pdev = vdev->pdev; 2074 2075 u64_stats_init(&vpath->fifo.stats.syncp); 2076 u64_stats_init(&vpath->ring.stats.syncp); 2077 2078 if (vdev->config.tx_steering_type) 2079 vpath->fifo.txq = 2080 netdev_get_tx_queue(vdev->ndev, i); 2081 else 2082 vpath->fifo.txq = 2083 netdev_get_tx_queue(vdev->ndev, 0); 2084 vpath->fifo.indicate_max_pkts = 2085 vdev->config.fifo_indicate_max_pkts; 2086 vpath->fifo.tx_vector_no = 0; 2087 vpath->ring.rx_vector_no = 0; 2088 vpath->ring.rx_hwts = vdev->rx_hwts; 2089 vpath->is_open = 1; 2090 vdev->vp_handles[i] = vpath->handle; 2091 vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip; 2092 vdev->stats.vpaths_open++; 2093 } else { 2094 vdev->stats.vpath_open_fail++; 2095 vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to " 2096 "open with status: %d", 2097 vdev->ndev->name, vpath->device_id, 2098 status); 2099 vxge_close_vpaths(vdev, 0); 2100 return -EPERM; 2101 } 2102 2103 vp_id = vpath->handle->vpath->vp_id; 2104 vdev->vpaths_deployed |= vxge_mBIT(vp_id); 2105 } 2106 2107 return VXGE_HW_OK; 2108} 2109 2110/** 2111 * adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing 2112 * if the interrupts are not within a range 2113 * @fifo: pointer to transmit fifo structure 2114 * Description: The function changes boundary timer and restriction timer 2115 * value depends on the traffic 2116 * Return Value: None 2117 */ 2118static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo) 2119{ 2120 fifo->interrupt_count++; 2121 if (time_before(fifo->jiffies + HZ / 100, jiffies)) { 2122 struct __vxge_hw_fifo *hw_fifo = fifo->handle; 2123 2124 fifo->jiffies = jiffies; 2125 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT && 2126 hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) { 2127 hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL; 2128 vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo); 2129 } else if (hw_fifo->rtimer != 0) { 2130 hw_fifo->rtimer = 0; 2131 vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo); 2132 } 2133 fifo->interrupt_count = 0; 2134 } 2135} 2136 2137/** 2138 * adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing 2139 * if the interrupts are not within a range 2140 * @ring: pointer to receive ring structure 2141 * Description: The function increases of decreases the packet counts within 2142 * the ranges of traffic utilization, if the interrupts due to this ring are 2143 * not within a fixed range. 2144 * Return Value: Nothing 2145 */ 2146static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring) 2147{ 2148 ring->interrupt_count++; 2149 if (time_before(ring->jiffies + HZ / 100, jiffies)) { 2150 struct __vxge_hw_ring *hw_ring = ring->handle; 2151 2152 ring->jiffies = jiffies; 2153 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT && 2154 hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) { 2155 hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL; 2156 vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring); 2157 } else if (hw_ring->rtimer != 0) { 2158 hw_ring->rtimer = 0; 2159 vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring); 2160 } 2161 ring->interrupt_count = 0; 2162 } 2163} 2164 2165/* 2166 * vxge_isr_napi 2167 * @irq: the irq of the device. 2168 * @dev_id: a void pointer to the hldev structure of the Titan device 2169 * @ptregs: pointer to the registers pushed on the stack. 2170 * 2171 * This function is the ISR handler of the device when napi is enabled. It 2172 * identifies the reason for the interrupt and calls the relevant service 2173 * routines. 2174 */ 2175static irqreturn_t vxge_isr_napi(int irq, void *dev_id) 2176{ 2177 struct __vxge_hw_device *hldev; 2178 u64 reason; 2179 enum vxge_hw_status status; 2180 struct vxgedev *vdev = (struct vxgedev *)dev_id; 2181 2182 vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__); 2183 2184 hldev = pci_get_drvdata(vdev->pdev); 2185 2186 if (pci_channel_offline(vdev->pdev)) 2187 return IRQ_NONE; 2188 2189 if (unlikely(!is_vxge_card_up(vdev))) 2190 return IRQ_HANDLED; 2191 2192 status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason); 2193 if (status == VXGE_HW_OK) { 2194 vxge_hw_device_mask_all(hldev); 2195 2196 if (reason & 2197 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT( 2198 vdev->vpaths_deployed >> 2199 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) { 2200 2201 vxge_hw_device_clear_tx_rx(hldev); 2202 napi_schedule(&vdev->napi); 2203 vxge_debug_intr(VXGE_TRACE, 2204 "%s:%d Exiting...", __func__, __LINE__); 2205 return IRQ_HANDLED; 2206 } else 2207 vxge_hw_device_unmask_all(hldev); 2208 } else if (unlikely((status == VXGE_HW_ERR_VPATH) || 2209 (status == VXGE_HW_ERR_CRITICAL) || 2210 (status == VXGE_HW_ERR_FIFO))) { 2211 vxge_hw_device_mask_all(hldev); 2212 vxge_hw_device_flush_io(hldev); 2213 return IRQ_HANDLED; 2214 } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE)) 2215 return IRQ_HANDLED; 2216 2217 vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__); 2218 return IRQ_NONE; 2219} 2220 2221static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id) 2222{ 2223 struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id; 2224 2225 adaptive_coalesce_tx_interrupts(fifo); 2226 2227 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle, 2228 fifo->tx_vector_no); 2229 2230 vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle, 2231 fifo->tx_vector_no); 2232 2233 VXGE_COMPLETE_VPATH_TX(fifo); 2234 2235 vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle, 2236 fifo->tx_vector_no); 2237 2238 return IRQ_HANDLED; 2239} 2240 2241static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id) 2242{ 2243 struct vxge_ring *ring = (struct vxge_ring *)dev_id; 2244 2245 adaptive_coalesce_rx_interrupts(ring); 2246 2247 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle, 2248 ring->rx_vector_no); 2249 2250 vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle, 2251 ring->rx_vector_no); 2252 2253 napi_schedule(&ring->napi); 2254 return IRQ_HANDLED; 2255} 2256 2257static irqreturn_t 2258vxge_alarm_msix_handle(int irq, void *dev_id) 2259{ 2260 int i; 2261 enum vxge_hw_status status; 2262 struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id; 2263 struct vxgedev *vdev = vpath->vdev; 2264 int msix_id = (vpath->handle->vpath->vp_id * 2265 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; 2266 2267 for (i = 0; i < vdev->no_of_vpath; i++) { 2268 /* Reduce the chance of losing alarm interrupts by masking 2269 * the vector. A pending bit will be set if an alarm is 2270 * generated and on unmask the interrupt will be fired. 2271 */ 2272 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id); 2273 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id); 2274 2275 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle, 2276 vdev->exec_mode); 2277 if (status == VXGE_HW_OK) { 2278 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle, 2279 msix_id); 2280 continue; 2281 } 2282 vxge_debug_intr(VXGE_ERR, 2283 "%s: vxge_hw_vpath_alarm_process failed %x ", 2284 VXGE_DRIVER_NAME, status); 2285 } 2286 return IRQ_HANDLED; 2287} 2288 2289static int vxge_alloc_msix(struct vxgedev *vdev) 2290{ 2291 int j, i, ret = 0; 2292 int msix_intr_vect = 0, temp; 2293 vdev->intr_cnt = 0; 2294 2295start: 2296 /* Tx/Rx MSIX Vectors count */ 2297 vdev->intr_cnt = vdev->no_of_vpath * 2; 2298 2299 /* Alarm MSIX Vectors count */ 2300 vdev->intr_cnt++; 2301 2302 vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry), 2303 GFP_KERNEL); 2304 if (!vdev->entries) { 2305 vxge_debug_init(VXGE_ERR, 2306 "%s: memory allocation failed", 2307 VXGE_DRIVER_NAME); 2308 ret = -ENOMEM; 2309 goto alloc_entries_failed; 2310 } 2311 2312 vdev->vxge_entries = kcalloc(vdev->intr_cnt, 2313 sizeof(struct vxge_msix_entry), 2314 GFP_KERNEL); 2315 if (!vdev->vxge_entries) { 2316 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed", 2317 VXGE_DRIVER_NAME); 2318 ret = -ENOMEM; 2319 goto alloc_vxge_entries_failed; 2320 } 2321 2322 for (i = 0, j = 0; i < vdev->no_of_vpath; i++) { 2323 2324 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE; 2325 2326 /* Initialize the fifo vector */ 2327 vdev->entries[j].entry = msix_intr_vect; 2328 vdev->vxge_entries[j].entry = msix_intr_vect; 2329 vdev->vxge_entries[j].in_use = 0; 2330 j++; 2331 2332 /* Initialize the ring vector */ 2333 vdev->entries[j].entry = msix_intr_vect + 1; 2334 vdev->vxge_entries[j].entry = msix_intr_vect + 1; 2335 vdev->vxge_entries[j].in_use = 0; 2336 j++; 2337 } 2338 2339 /* Initialize the alarm vector */ 2340 vdev->entries[j].entry = VXGE_ALARM_MSIX_ID; 2341 vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID; 2342 vdev->vxge_entries[j].in_use = 0; 2343 2344 ret = pci_enable_msix_range(vdev->pdev, 2345 vdev->entries, 3, vdev->intr_cnt); 2346 if (ret < 0) { 2347 ret = -ENODEV; 2348 goto enable_msix_failed; 2349 } else if (ret < vdev->intr_cnt) { 2350 pci_disable_msix(vdev->pdev); 2351 2352 vxge_debug_init(VXGE_ERR, 2353 "%s: MSI-X enable failed for %d vectors, ret: %d", 2354 VXGE_DRIVER_NAME, vdev->intr_cnt, ret); 2355 if (max_config_vpath != VXGE_USE_DEFAULT) { 2356 ret = -ENODEV; 2357 goto enable_msix_failed; 2358 } 2359 2360 kfree(vdev->entries); 2361 kfree(vdev->vxge_entries); 2362 vdev->entries = NULL; 2363 vdev->vxge_entries = NULL; 2364 /* Try with less no of vector by reducing no of vpaths count */ 2365 temp = (ret - 1)/2; 2366 vxge_close_vpaths(vdev, temp); 2367 vdev->no_of_vpath = temp; 2368 goto start; 2369 } 2370 return 0; 2371 2372enable_msix_failed: 2373 kfree(vdev->vxge_entries); 2374alloc_vxge_entries_failed: 2375 kfree(vdev->entries); 2376alloc_entries_failed: 2377 return ret; 2378} 2379 2380static int vxge_enable_msix(struct vxgedev *vdev) 2381{ 2382 2383 int i, ret = 0; 2384 /* 0 - Tx, 1 - Rx */ 2385 int tim_msix_id[4] = {0, 1, 0, 0}; 2386 2387 vdev->intr_cnt = 0; 2388 2389 /* allocate msix vectors */ 2390 ret = vxge_alloc_msix(vdev); 2391 if (!ret) { 2392 for (i = 0; i < vdev->no_of_vpath; i++) { 2393 struct vxge_vpath *vpath = &vdev->vpaths[i]; 2394 2395 /* If fifo or ring are not enabled, the MSIX vector for 2396 * it should be set to 0. 2397 */ 2398 vpath->ring.rx_vector_no = (vpath->device_id * 2399 VXGE_HW_VPATH_MSIX_ACTIVE) + 1; 2400 2401 vpath->fifo.tx_vector_no = (vpath->device_id * 2402 VXGE_HW_VPATH_MSIX_ACTIVE); 2403 2404 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id, 2405 VXGE_ALARM_MSIX_ID); 2406 } 2407 } 2408 2409 return ret; 2410} 2411 2412static void vxge_rem_msix_isr(struct vxgedev *vdev) 2413{ 2414 int intr_cnt; 2415 2416 for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1); 2417 intr_cnt++) { 2418 if (vdev->vxge_entries[intr_cnt].in_use) { 2419 synchronize_irq(vdev->entries[intr_cnt].vector); 2420 free_irq(vdev->entries[intr_cnt].vector, 2421 vdev->vxge_entries[intr_cnt].arg); 2422 vdev->vxge_entries[intr_cnt].in_use = 0; 2423 } 2424 } 2425 2426 kfree(vdev->entries); 2427 kfree(vdev->vxge_entries); 2428 vdev->entries = NULL; 2429 vdev->vxge_entries = NULL; 2430 2431 if (vdev->config.intr_type == MSI_X) 2432 pci_disable_msix(vdev->pdev); 2433} 2434 2435static void vxge_rem_isr(struct vxgedev *vdev) 2436{ 2437 if (IS_ENABLED(CONFIG_PCI_MSI) && 2438 vdev->config.intr_type == MSI_X) { 2439 vxge_rem_msix_isr(vdev); 2440 } else if (vdev->config.intr_type == INTA) { 2441 synchronize_irq(vdev->pdev->irq); 2442 free_irq(vdev->pdev->irq, vdev); 2443 } 2444} 2445 2446static int vxge_add_isr(struct vxgedev *vdev) 2447{ 2448 int ret = 0; 2449 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0; 2450 int pci_fun = PCI_FUNC(vdev->pdev->devfn); 2451 2452 if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) 2453 ret = vxge_enable_msix(vdev); 2454 2455 if (ret) { 2456 vxge_debug_init(VXGE_ERR, 2457 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME); 2458 vxge_debug_init(VXGE_ERR, 2459 "%s: Defaulting to INTA", VXGE_DRIVER_NAME); 2460 vdev->config.intr_type = INTA; 2461 } 2462 2463 if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) { 2464 for (intr_idx = 0; 2465 intr_idx < (vdev->no_of_vpath * 2466 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) { 2467 2468 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE; 2469 irq_req = 0; 2470 2471 switch (msix_idx) { 2472 case 0: 2473 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, 2474 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d", 2475 vdev->ndev->name, 2476 vdev->entries[intr_cnt].entry, 2477 pci_fun, vp_idx); 2478 ret = request_irq( 2479 vdev->entries[intr_cnt].vector, 2480 vxge_tx_msix_handle, 0, 2481 vdev->desc[intr_cnt], 2482 &vdev->vpaths[vp_idx].fifo); 2483 vdev->vxge_entries[intr_cnt].arg = 2484 &vdev->vpaths[vp_idx].fifo; 2485 irq_req = 1; 2486 break; 2487 case 1: 2488 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, 2489 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d", 2490 vdev->ndev->name, 2491 vdev->entries[intr_cnt].entry, 2492 pci_fun, vp_idx); 2493 ret = request_irq( 2494 vdev->entries[intr_cnt].vector, 2495 vxge_rx_msix_napi_handle, 0, 2496 vdev->desc[intr_cnt], 2497 &vdev->vpaths[vp_idx].ring); 2498 vdev->vxge_entries[intr_cnt].arg = 2499 &vdev->vpaths[vp_idx].ring; 2500 irq_req = 1; 2501 break; 2502 } 2503 2504 if (ret) { 2505 vxge_debug_init(VXGE_ERR, 2506 "%s: MSIX - %d Registration failed", 2507 vdev->ndev->name, intr_cnt); 2508 vxge_rem_msix_isr(vdev); 2509 vdev->config.intr_type = INTA; 2510 vxge_debug_init(VXGE_ERR, 2511 "%s: Defaulting to INTA", 2512 vdev->ndev->name); 2513 goto INTA_MODE; 2514 } 2515 2516 if (irq_req) { 2517 /* We requested for this msix interrupt */ 2518 vdev->vxge_entries[intr_cnt].in_use = 1; 2519 msix_idx += vdev->vpaths[vp_idx].device_id * 2520 VXGE_HW_VPATH_MSIX_ACTIVE; 2521 vxge_hw_vpath_msix_unmask( 2522 vdev->vpaths[vp_idx].handle, 2523 msix_idx); 2524 intr_cnt++; 2525 } 2526 2527 /* Point to next vpath handler */ 2528 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) && 2529 (vp_idx < (vdev->no_of_vpath - 1))) 2530 vp_idx++; 2531 } 2532 2533 intr_cnt = vdev->no_of_vpath * 2; 2534 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, 2535 "%s:vxge:MSI-X %d - Alarm - fn:%d", 2536 vdev->ndev->name, 2537 vdev->entries[intr_cnt].entry, 2538 pci_fun); 2539 /* For Alarm interrupts */ 2540 ret = request_irq(vdev->entries[intr_cnt].vector, 2541 vxge_alarm_msix_handle, 0, 2542 vdev->desc[intr_cnt], 2543 &vdev->vpaths[0]); 2544 if (ret) { 2545 vxge_debug_init(VXGE_ERR, 2546 "%s: MSIX - %d Registration failed", 2547 vdev->ndev->name, intr_cnt); 2548 vxge_rem_msix_isr(vdev); 2549 vdev->config.intr_type = INTA; 2550 vxge_debug_init(VXGE_ERR, 2551 "%s: Defaulting to INTA", 2552 vdev->ndev->name); 2553 goto INTA_MODE; 2554 } 2555 2556 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id * 2557 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; 2558 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle, 2559 msix_idx); 2560 vdev->vxge_entries[intr_cnt].in_use = 1; 2561 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0]; 2562 } 2563 2564INTA_MODE: 2565 if (vdev->config.intr_type == INTA) { 2566 snprintf(vdev->desc[0], VXGE_INTR_STRLEN, 2567 "%s:vxge:INTA", vdev->ndev->name); 2568 vxge_hw_device_set_intr_type(vdev->devh, 2569 VXGE_HW_INTR_MODE_IRQLINE); 2570 2571 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle); 2572 2573 ret = request_irq((int) vdev->pdev->irq, 2574 vxge_isr_napi, 2575 IRQF_SHARED, vdev->desc[0], vdev); 2576 if (ret) { 2577 vxge_debug_init(VXGE_ERR, 2578 "%s %s-%d: ISR registration failed", 2579 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq); 2580 return -ENODEV; 2581 } 2582 vxge_debug_init(VXGE_TRACE, 2583 "new %s-%d line allocated", 2584 "IRQ", vdev->pdev->irq); 2585 } 2586 2587 return VXGE_HW_OK; 2588} 2589 2590static void vxge_poll_vp_reset(struct timer_list *t) 2591{ 2592 struct vxgedev *vdev = from_timer(vdev, t, vp_reset_timer); 2593 int i, j = 0; 2594 2595 for (i = 0; i < vdev->no_of_vpath; i++) { 2596 if (test_bit(i, &vdev->vp_reset)) { 2597 vxge_reset_vpath(vdev, i); 2598 j++; 2599 } 2600 } 2601 if (j && (vdev->config.intr_type != MSI_X)) { 2602 vxge_hw_device_unmask_all(vdev->devh); 2603 vxge_hw_device_flush_io(vdev->devh); 2604 } 2605 2606 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2); 2607} 2608 2609static void vxge_poll_vp_lockup(struct timer_list *t) 2610{ 2611 struct vxgedev *vdev = from_timer(vdev, t, vp_lockup_timer); 2612 enum vxge_hw_status status = VXGE_HW_OK; 2613 struct vxge_vpath *vpath; 2614 struct vxge_ring *ring; 2615 int i; 2616 unsigned long rx_frms; 2617 2618 for (i = 0; i < vdev->no_of_vpath; i++) { 2619 ring = &vdev->vpaths[i].ring; 2620 2621 /* Truncated to machine word size number of frames */ 2622 rx_frms = READ_ONCE(ring->stats.rx_frms); 2623 2624 /* Did this vpath received any packets */ 2625 if (ring->stats.prev_rx_frms == rx_frms) { 2626 status = vxge_hw_vpath_check_leak(ring->handle); 2627 2628 /* Did it received any packets last time */ 2629 if ((VXGE_HW_FAIL == status) && 2630 (VXGE_HW_FAIL == ring->last_status)) { 2631 2632 /* schedule vpath reset */ 2633 if (!test_and_set_bit(i, &vdev->vp_reset)) { 2634 vpath = &vdev->vpaths[i]; 2635 2636 /* disable interrupts for this vpath */ 2637 vxge_vpath_intr_disable(vdev, i); 2638 2639 /* stop the queue for this vpath */ 2640 netif_tx_stop_queue(vpath->fifo.txq); 2641 continue; 2642 } 2643 } 2644 } 2645 ring->stats.prev_rx_frms = rx_frms; 2646 ring->last_status = status; 2647 } 2648 2649 /* Check every 1 milli second */ 2650 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000); 2651} 2652 2653static netdev_features_t vxge_fix_features(struct net_device *dev, 2654 netdev_features_t features) 2655{ 2656 netdev_features_t changed = dev->features ^ features; 2657 2658 /* Enabling RTH requires some of the logic in vxge_device_register and a 2659 * vpath reset. Due to these restrictions, only allow modification 2660 * while the interface is down. 2661 */ 2662 if ((changed & NETIF_F_RXHASH) && netif_running(dev)) 2663 features ^= NETIF_F_RXHASH; 2664 2665 return features; 2666} 2667 2668static int vxge_set_features(struct net_device *dev, netdev_features_t features) 2669{ 2670 struct vxgedev *vdev = netdev_priv(dev); 2671 netdev_features_t changed = dev->features ^ features; 2672 2673 if (!(changed & NETIF_F_RXHASH)) 2674 return 0; 2675 2676 /* !netif_running() ensured by vxge_fix_features() */ 2677 2678 vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH); 2679 if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) { 2680 dev->features = features ^ NETIF_F_RXHASH; 2681 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH); 2682 return -EIO; 2683 } 2684 2685 return 0; 2686} 2687 2688/** 2689 * vxge_open 2690 * @dev: pointer to the device structure. 2691 * 2692 * This function is the open entry point of the driver. It mainly calls a 2693 * function to allocate Rx buffers and inserts them into the buffer 2694 * descriptors and then enables the Rx part of the NIC. 2695 * Return value: '0' on success and an appropriate (-)ve integer as 2696 * defined in errno.h file on failure. 2697 */ 2698static int vxge_open(struct net_device *dev) 2699{ 2700 enum vxge_hw_status status; 2701 struct vxgedev *vdev; 2702 struct __vxge_hw_device *hldev; 2703 struct vxge_vpath *vpath; 2704 int ret = 0; 2705 int i; 2706 u64 val64; 2707 2708 vxge_debug_entryexit(VXGE_TRACE, 2709 "%s: %s:%d", dev->name, __func__, __LINE__); 2710 2711 vdev = netdev_priv(dev); 2712 hldev = pci_get_drvdata(vdev->pdev); 2713 2714 /* make sure you have link off by default every time Nic is 2715 * initialized */ 2716 netif_carrier_off(dev); 2717 2718 /* Open VPATHs */ 2719 status = vxge_open_vpaths(vdev); 2720 if (status != VXGE_HW_OK) { 2721 vxge_debug_init(VXGE_ERR, 2722 "%s: fatal: Vpath open failed", vdev->ndev->name); 2723 ret = -EPERM; 2724 goto out0; 2725 } 2726 2727 vdev->mtu = dev->mtu; 2728 2729 status = vxge_add_isr(vdev); 2730 if (status != VXGE_HW_OK) { 2731 vxge_debug_init(VXGE_ERR, 2732 "%s: fatal: ISR add failed", dev->name); 2733 ret = -EPERM; 2734 goto out1; 2735 } 2736 2737 if (vdev->config.intr_type != MSI_X) { 2738 netif_napi_add(dev, &vdev->napi, vxge_poll_inta, 2739 vdev->config.napi_weight); 2740 napi_enable(&vdev->napi); 2741 for (i = 0; i < vdev->no_of_vpath; i++) { 2742 vpath = &vdev->vpaths[i]; 2743 vpath->ring.napi_p = &vdev->napi; 2744 } 2745 } else { 2746 for (i = 0; i < vdev->no_of_vpath; i++) { 2747 vpath = &vdev->vpaths[i]; 2748 netif_napi_add(dev, &vpath->ring.napi, 2749 vxge_poll_msix, vdev->config.napi_weight); 2750 napi_enable(&vpath->ring.napi); 2751 vpath->ring.napi_p = &vpath->ring.napi; 2752 } 2753 } 2754 2755 /* configure RTH */ 2756 if (vdev->config.rth_steering) { 2757 status = vxge_rth_configure(vdev); 2758 if (status != VXGE_HW_OK) { 2759 vxge_debug_init(VXGE_ERR, 2760 "%s: fatal: RTH configuration failed", 2761 dev->name); 2762 ret = -EPERM; 2763 goto out2; 2764 } 2765 } 2766 printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name, 2767 hldev->config.rth_en ? "enabled" : "disabled"); 2768 2769 for (i = 0; i < vdev->no_of_vpath; i++) { 2770 vpath = &vdev->vpaths[i]; 2771 2772 /* set initial mtu before enabling the device */ 2773 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu); 2774 if (status != VXGE_HW_OK) { 2775 vxge_debug_init(VXGE_ERR, 2776 "%s: fatal: can not set new MTU", dev->name); 2777 ret = -EPERM; 2778 goto out2; 2779 } 2780 } 2781 2782 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev); 2783 vxge_debug_init(vdev->level_trace, 2784 "%s: MTU is %d", vdev->ndev->name, vdev->mtu); 2785 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev); 2786 2787 /* Restore the DA, VID table and also multicast and promiscuous mode 2788 * states 2789 */ 2790 if (vdev->all_multi_flg) { 2791 for (i = 0; i < vdev->no_of_vpath; i++) { 2792 vpath = &vdev->vpaths[i]; 2793 vxge_restore_vpath_mac_addr(vpath); 2794 vxge_restore_vpath_vid_table(vpath); 2795 2796 status = vxge_hw_vpath_mcast_enable(vpath->handle); 2797 if (status != VXGE_HW_OK) 2798 vxge_debug_init(VXGE_ERR, 2799 "%s:%d Enabling multicast failed", 2800 __func__, __LINE__); 2801 } 2802 } 2803 2804 /* Enable vpath to sniff all unicast/multicast traffic that not 2805 * addressed to them. We allow promiscuous mode for PF only 2806 */ 2807 2808 val64 = 0; 2809 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) 2810 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i); 2811 2812 vxge_hw_mgmt_reg_write(vdev->devh, 2813 vxge_hw_mgmt_reg_type_mrpcim, 2814 0, 2815 (ulong)offsetof(struct vxge_hw_mrpcim_reg, 2816 rxmac_authorize_all_addr), 2817 val64); 2818 2819 vxge_hw_mgmt_reg_write(vdev->devh, 2820 vxge_hw_mgmt_reg_type_mrpcim, 2821 0, 2822 (ulong)offsetof(struct vxge_hw_mrpcim_reg, 2823 rxmac_authorize_all_vid), 2824 val64); 2825 2826 vxge_set_multicast(dev); 2827 2828 /* Enabling Bcast and mcast for all vpath */ 2829 for (i = 0; i < vdev->no_of_vpath; i++) { 2830 vpath = &vdev->vpaths[i]; 2831 status = vxge_hw_vpath_bcast_enable(vpath->handle); 2832 if (status != VXGE_HW_OK) 2833 vxge_debug_init(VXGE_ERR, 2834 "%s : Can not enable bcast for vpath " 2835 "id %d", dev->name, i); 2836 if (vdev->config.addr_learn_en) { 2837 status = vxge_hw_vpath_mcast_enable(vpath->handle); 2838 if (status != VXGE_HW_OK) 2839 vxge_debug_init(VXGE_ERR, 2840 "%s : Can not enable mcast for vpath " 2841 "id %d", dev->name, i); 2842 } 2843 } 2844 2845 vxge_hw_device_setpause_data(vdev->devh, 0, 2846 vdev->config.tx_pause_enable, 2847 vdev->config.rx_pause_enable); 2848 2849 if (vdev->vp_reset_timer.function == NULL) 2850 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset, 2851 HZ / 2); 2852 2853 /* There is no need to check for RxD leak and RxD lookup on Titan1A */ 2854 if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL) 2855 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup, 2856 HZ / 2); 2857 2858 set_bit(__VXGE_STATE_CARD_UP, &vdev->state); 2859 2860 smp_wmb(); 2861 2862 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) { 2863 netif_carrier_on(vdev->ndev); 2864 netdev_notice(vdev->ndev, "Link Up\n"); 2865 vdev->stats.link_up++; 2866 } 2867 2868 vxge_hw_device_intr_enable(vdev->devh); 2869 2870 smp_wmb(); 2871 2872 for (i = 0; i < vdev->no_of_vpath; i++) { 2873 vpath = &vdev->vpaths[i]; 2874 2875 vxge_hw_vpath_enable(vpath->handle); 2876 smp_wmb(); 2877 vxge_hw_vpath_rx_doorbell_init(vpath->handle); 2878 } 2879 2880 netif_tx_start_all_queues(vdev->ndev); 2881 2882 /* configure CI */ 2883 vxge_config_ci_for_tti_rti(vdev); 2884 2885 goto out0; 2886 2887out2: 2888 vxge_rem_isr(vdev); 2889 2890 /* Disable napi */ 2891 if (vdev->config.intr_type != MSI_X) 2892 napi_disable(&vdev->napi); 2893 else { 2894 for (i = 0; i < vdev->no_of_vpath; i++) 2895 napi_disable(&vdev->vpaths[i].ring.napi); 2896 } 2897 2898out1: 2899 vxge_close_vpaths(vdev, 0); 2900out0: 2901 vxge_debug_entryexit(VXGE_TRACE, 2902 "%s: %s:%d Exiting...", 2903 dev->name, __func__, __LINE__); 2904 return ret; 2905} 2906 2907/* Loop through the mac address list and delete all the entries */ 2908static void vxge_free_mac_add_list(struct vxge_vpath *vpath) 2909{ 2910 2911 struct list_head *entry, *next; 2912 if (list_empty(&vpath->mac_addr_list)) 2913 return; 2914 2915 list_for_each_safe(entry, next, &vpath->mac_addr_list) { 2916 list_del(entry); 2917 kfree(entry); 2918 } 2919} 2920 2921static void vxge_napi_del_all(struct vxgedev *vdev) 2922{ 2923 int i; 2924 if (vdev->config.intr_type != MSI_X) 2925 netif_napi_del(&vdev->napi); 2926 else { 2927 for (i = 0; i < vdev->no_of_vpath; i++) 2928 netif_napi_del(&vdev->vpaths[i].ring.napi); 2929 } 2930} 2931 2932static int do_vxge_close(struct net_device *dev, int do_io) 2933{ 2934 enum vxge_hw_status status; 2935 struct vxgedev *vdev; 2936 struct __vxge_hw_device *hldev; 2937 int i; 2938 u64 val64, vpath_vector; 2939 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", 2940 dev->name, __func__, __LINE__); 2941 2942 vdev = netdev_priv(dev); 2943 hldev = pci_get_drvdata(vdev->pdev); 2944 2945 if (unlikely(!is_vxge_card_up(vdev))) 2946 return 0; 2947 2948 /* If vxge_handle_crit_err task is executing, 2949 * wait till it completes. */ 2950 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) 2951 msleep(50); 2952 2953 if (do_io) { 2954 /* Put the vpath back in normal mode */ 2955 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id); 2956 status = vxge_hw_mgmt_reg_read(vdev->devh, 2957 vxge_hw_mgmt_reg_type_mrpcim, 2958 0, 2959 (ulong)offsetof( 2960 struct vxge_hw_mrpcim_reg, 2961 rts_mgr_cbasin_cfg), 2962 &val64); 2963 if (status == VXGE_HW_OK) { 2964 val64 &= ~vpath_vector; 2965 status = vxge_hw_mgmt_reg_write(vdev->devh, 2966 vxge_hw_mgmt_reg_type_mrpcim, 2967 0, 2968 (ulong)offsetof( 2969 struct vxge_hw_mrpcim_reg, 2970 rts_mgr_cbasin_cfg), 2971 val64); 2972 } 2973 2974 /* Remove the function 0 from promiscuous mode */ 2975 vxge_hw_mgmt_reg_write(vdev->devh, 2976 vxge_hw_mgmt_reg_type_mrpcim, 2977 0, 2978 (ulong)offsetof(struct vxge_hw_mrpcim_reg, 2979 rxmac_authorize_all_addr), 2980 0); 2981 2982 vxge_hw_mgmt_reg_write(vdev->devh, 2983 vxge_hw_mgmt_reg_type_mrpcim, 2984 0, 2985 (ulong)offsetof(struct vxge_hw_mrpcim_reg, 2986 rxmac_authorize_all_vid), 2987 0); 2988 2989 smp_wmb(); 2990 } 2991 2992 if (vdev->titan1) 2993 del_timer_sync(&vdev->vp_lockup_timer); 2994 2995 del_timer_sync(&vdev->vp_reset_timer); 2996 2997 if (do_io) 2998 vxge_hw_device_wait_receive_idle(hldev); 2999 3000 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); 3001 3002 /* Disable napi */ 3003 if (vdev->config.intr_type != MSI_X) 3004 napi_disable(&vdev->napi); 3005 else { 3006 for (i = 0; i < vdev->no_of_vpath; i++) 3007 napi_disable(&vdev->vpaths[i].ring.napi); 3008 } 3009 3010 netif_carrier_off(vdev->ndev); 3011 netdev_notice(vdev->ndev, "Link Down\n"); 3012 netif_tx_stop_all_queues(vdev->ndev); 3013 3014 /* Note that at this point xmit() is stopped by upper layer */ 3015 if (do_io) 3016 vxge_hw_device_intr_disable(vdev->devh); 3017 3018 vxge_rem_isr(vdev); 3019 3020 vxge_napi_del_all(vdev); 3021 3022 if (do_io) 3023 vxge_reset_all_vpaths(vdev); 3024 3025 vxge_close_vpaths(vdev, 0); 3026 3027 vxge_debug_entryexit(VXGE_TRACE, 3028 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__); 3029 3030 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state); 3031 3032 return 0; 3033} 3034 3035/** 3036 * vxge_close 3037 * @dev: device pointer. 3038 * 3039 * This is the stop entry point of the driver. It needs to undo exactly 3040 * whatever was done by the open entry point, thus it's usually referred to 3041 * as the close function.Among other things this function mainly stops the 3042 * Rx side of the NIC and frees all the Rx buffers in the Rx rings. 3043 * Return value: '0' on success and an appropriate (-)ve integer as 3044 * defined in errno.h file on failure. 3045 */ 3046static int vxge_close(struct net_device *dev) 3047{ 3048 do_vxge_close(dev, 1); 3049 return 0; 3050} 3051 3052/** 3053 * vxge_change_mtu 3054 * @dev: net device pointer. 3055 * @new_mtu :the new MTU size for the device. 3056 * 3057 * A driver entry point to change MTU size for the device. Before changing 3058 * the MTU the device must be stopped. 3059 */ 3060static int vxge_change_mtu(struct net_device *dev, int new_mtu) 3061{ 3062 struct vxgedev *vdev = netdev_priv(dev); 3063 3064 vxge_debug_entryexit(vdev->level_trace, 3065 "%s:%d", __func__, __LINE__); 3066 3067 /* check if device is down already */ 3068 if (unlikely(!is_vxge_card_up(vdev))) { 3069 /* just store new value, will use later on open() */ 3070 dev->mtu = new_mtu; 3071 vxge_debug_init(vdev->level_err, 3072 "%s", "device is down on MTU change"); 3073 return 0; 3074 } 3075 3076 vxge_debug_init(vdev->level_trace, 3077 "trying to apply new MTU %d", new_mtu); 3078 3079 if (vxge_close(dev)) 3080 return -EIO; 3081 3082 dev->mtu = new_mtu; 3083 vdev->mtu = new_mtu; 3084 3085 if (vxge_open(dev)) 3086 return -EIO; 3087 3088 vxge_debug_init(vdev->level_trace, 3089 "%s: MTU changed to %d", vdev->ndev->name, new_mtu); 3090 3091 vxge_debug_entryexit(vdev->level_trace, 3092 "%s:%d Exiting...", __func__, __LINE__); 3093 3094 return 0; 3095} 3096 3097/** 3098 * vxge_get_stats64 3099 * @dev: pointer to the device structure 3100 * @net_stats: pointer to struct rtnl_link_stats64 3101 * 3102 */ 3103static void 3104vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats) 3105{ 3106 struct vxgedev *vdev = netdev_priv(dev); 3107 int k; 3108 3109 /* net_stats already zeroed by caller */ 3110 for (k = 0; k < vdev->no_of_vpath; k++) { 3111 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats; 3112 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats; 3113 unsigned int start; 3114 u64 packets, bytes, multicast; 3115 3116 do { 3117 start = u64_stats_fetch_begin_irq(&rxstats->syncp); 3118 3119 packets = rxstats->rx_frms; 3120 multicast = rxstats->rx_mcast; 3121 bytes = rxstats->rx_bytes; 3122 } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start)); 3123 3124 net_stats->rx_packets += packets; 3125 net_stats->rx_bytes += bytes; 3126 net_stats->multicast += multicast; 3127 3128 net_stats->rx_errors += rxstats->rx_errors; 3129 net_stats->rx_dropped += rxstats->rx_dropped; 3130 3131 do { 3132 start = u64_stats_fetch_begin_irq(&txstats->syncp); 3133 3134 packets = txstats->tx_frms; 3135 bytes = txstats->tx_bytes; 3136 } while (u64_stats_fetch_retry_irq(&txstats->syncp, start)); 3137 3138 net_stats->tx_packets += packets; 3139 net_stats->tx_bytes += bytes; 3140 net_stats->tx_errors += txstats->tx_errors; 3141 } 3142} 3143 3144static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh) 3145{ 3146 enum vxge_hw_status status; 3147 u64 val64; 3148 3149 /* Timestamp is passed to the driver via the FCS, therefore we 3150 * must disable the FCS stripping by the adapter. Since this is 3151 * required for the driver to load (due to a hardware bug), 3152 * there is no need to do anything special here. 3153 */ 3154 val64 = VXGE_HW_XMAC_TIMESTAMP_EN | 3155 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) | 3156 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0); 3157 3158 status = vxge_hw_mgmt_reg_write(devh, 3159 vxge_hw_mgmt_reg_type_mrpcim, 3160 0, 3161 offsetof(struct vxge_hw_mrpcim_reg, 3162 xmac_timestamp), 3163 val64); 3164 vxge_hw_device_flush_io(devh); 3165 devh->config.hwts_en = VXGE_HW_HWTS_ENABLE; 3166 return status; 3167} 3168 3169static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data) 3170{ 3171 struct hwtstamp_config config; 3172 int i; 3173 3174 if (copy_from_user(&config, data, sizeof(config))) 3175 return -EFAULT; 3176 3177 /* reserved for future extensions */ 3178 if (config.flags) 3179 return -EINVAL; 3180 3181 /* Transmit HW Timestamp not supported */ 3182 switch (config.tx_type) { 3183 case HWTSTAMP_TX_OFF: 3184 break; 3185 case HWTSTAMP_TX_ON: 3186 default: 3187 return -ERANGE; 3188 } 3189 3190 switch (config.rx_filter) { 3191 case HWTSTAMP_FILTER_NONE: 3192 vdev->rx_hwts = 0; 3193 config.rx_filter = HWTSTAMP_FILTER_NONE; 3194 break; 3195 3196 case HWTSTAMP_FILTER_ALL: 3197 case HWTSTAMP_FILTER_SOME: 3198 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 3199 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 3200 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 3201 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 3202 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 3203 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 3204 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 3205 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 3206 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 3207 case HWTSTAMP_FILTER_PTP_V2_EVENT: 3208 case HWTSTAMP_FILTER_PTP_V2_SYNC: 3209 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 3210 case HWTSTAMP_FILTER_NTP_ALL: 3211 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE) 3212 return -EFAULT; 3213 3214 vdev->rx_hwts = 1; 3215 config.rx_filter = HWTSTAMP_FILTER_ALL; 3216 break; 3217 3218 default: 3219 return -ERANGE; 3220 } 3221 3222 for (i = 0; i < vdev->no_of_vpath; i++) 3223 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts; 3224 3225 if (copy_to_user(data, &config, sizeof(config))) 3226 return -EFAULT; 3227 3228 return 0; 3229} 3230 3231static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data) 3232{ 3233 struct hwtstamp_config config; 3234 3235 config.flags = 0; 3236 config.tx_type = HWTSTAMP_TX_OFF; 3237 config.rx_filter = (vdev->rx_hwts ? 3238 HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE); 3239 3240 if (copy_to_user(data, &config, sizeof(config))) 3241 return -EFAULT; 3242 3243 return 0; 3244} 3245 3246/** 3247 * vxge_ioctl 3248 * @dev: Device pointer. 3249 * @rq: An IOCTL specific structure, that can contain a pointer to 3250 * a proprietary structure used to pass information to the driver. 3251 * @cmd: This is used to distinguish between the different commands that 3252 * can be passed to the IOCTL functions. 3253 * 3254 * Entry point for the Ioctl. 3255 */ 3256static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 3257{ 3258 struct vxgedev *vdev = netdev_priv(dev); 3259 3260 switch (cmd) { 3261 case SIOCSHWTSTAMP: 3262 return vxge_hwtstamp_set(vdev, rq->ifr_data); 3263 case SIOCGHWTSTAMP: 3264 return vxge_hwtstamp_get(vdev, rq->ifr_data); 3265 default: 3266 return -EOPNOTSUPP; 3267 } 3268} 3269 3270/** 3271 * vxge_tx_watchdog 3272 * @dev: pointer to net device structure 3273 * @txqueue: index of the hanging queue 3274 * 3275 * Watchdog for transmit side. 3276 * This function is triggered if the Tx Queue is stopped 3277 * for a pre-defined amount of time when the Interface is still up. 3278 */ 3279static void vxge_tx_watchdog(struct net_device *dev, unsigned int txqueue) 3280{ 3281 struct vxgedev *vdev; 3282 3283 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); 3284 3285 vdev = netdev_priv(dev); 3286 3287 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START; 3288 3289 schedule_work(&vdev->reset_task); 3290 vxge_debug_entryexit(VXGE_TRACE, 3291 "%s:%d Exiting...", __func__, __LINE__); 3292} 3293 3294/** 3295 * vxge_vlan_rx_add_vid 3296 * @dev: net device pointer. 3297 * @proto: vlan protocol 3298 * @vid: vid 3299 * 3300 * Add the vlan id to the devices vlan id table 3301 */ 3302static int 3303vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) 3304{ 3305 struct vxgedev *vdev = netdev_priv(dev); 3306 struct vxge_vpath *vpath; 3307 int vp_id; 3308 3309 /* Add these vlan to the vid table */ 3310 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { 3311 vpath = &vdev->vpaths[vp_id]; 3312 if (!vpath->is_open) 3313 continue; 3314 vxge_hw_vpath_vid_add(vpath->handle, vid); 3315 } 3316 set_bit(vid, vdev->active_vlans); 3317 return 0; 3318} 3319 3320/** 3321 * vxge_vlan_rx_kill_vid 3322 * @dev: net device pointer. 3323 * @proto: vlan protocol 3324 * @vid: vid 3325 * 3326 * Remove the vlan id from the device's vlan id table 3327 */ 3328static int 3329vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) 3330{ 3331 struct vxgedev *vdev = netdev_priv(dev); 3332 struct vxge_vpath *vpath; 3333 int vp_id; 3334 3335 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); 3336 3337 /* Delete this vlan from the vid table */ 3338 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { 3339 vpath = &vdev->vpaths[vp_id]; 3340 if (!vpath->is_open) 3341 continue; 3342 vxge_hw_vpath_vid_delete(vpath->handle, vid); 3343 } 3344 vxge_debug_entryexit(VXGE_TRACE, 3345 "%s:%d Exiting...", __func__, __LINE__); 3346 clear_bit(vid, vdev->active_vlans); 3347 return 0; 3348} 3349 3350static const struct net_device_ops vxge_netdev_ops = { 3351 .ndo_open = vxge_open, 3352 .ndo_stop = vxge_close, 3353 .ndo_get_stats64 = vxge_get_stats64, 3354 .ndo_start_xmit = vxge_xmit, 3355 .ndo_validate_addr = eth_validate_addr, 3356 .ndo_set_rx_mode = vxge_set_multicast, 3357 .ndo_do_ioctl = vxge_ioctl, 3358 .ndo_set_mac_address = vxge_set_mac_addr, 3359 .ndo_change_mtu = vxge_change_mtu, 3360 .ndo_fix_features = vxge_fix_features, 3361 .ndo_set_features = vxge_set_features, 3362 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid, 3363 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid, 3364 .ndo_tx_timeout = vxge_tx_watchdog, 3365#ifdef CONFIG_NET_POLL_CONTROLLER 3366 .ndo_poll_controller = vxge_netpoll, 3367#endif 3368}; 3369 3370static int vxge_device_register(struct __vxge_hw_device *hldev, 3371 struct vxge_config *config, int high_dma, 3372 int no_of_vpath, struct vxgedev **vdev_out) 3373{ 3374 struct net_device *ndev; 3375 enum vxge_hw_status status = VXGE_HW_OK; 3376 struct vxgedev *vdev; 3377 int ret = 0, no_of_queue = 1; 3378 u64 stat; 3379 3380 *vdev_out = NULL; 3381 if (config->tx_steering_type) 3382 no_of_queue = no_of_vpath; 3383 3384 ndev = alloc_etherdev_mq(sizeof(struct vxgedev), 3385 no_of_queue); 3386 if (ndev == NULL) { 3387 vxge_debug_init( 3388 vxge_hw_device_trace_level_get(hldev), 3389 "%s : device allocation failed", __func__); 3390 ret = -ENODEV; 3391 goto _out0; 3392 } 3393 3394 vxge_debug_entryexit( 3395 vxge_hw_device_trace_level_get(hldev), 3396 "%s: %s:%d Entering...", 3397 ndev->name, __func__, __LINE__); 3398 3399 vdev = netdev_priv(ndev); 3400 memset(vdev, 0, sizeof(struct vxgedev)); 3401 3402 vdev->ndev = ndev; 3403 vdev->devh = hldev; 3404 vdev->pdev = hldev->pdev; 3405 memcpy(&vdev->config, config, sizeof(struct vxge_config)); 3406 vdev->rx_hwts = 0; 3407 vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION); 3408 3409 SET_NETDEV_DEV(ndev, &vdev->pdev->dev); 3410 3411 ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG | 3412 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 3413 NETIF_F_TSO | NETIF_F_TSO6 | 3414 NETIF_F_HW_VLAN_CTAG_TX; 3415 if (vdev->config.rth_steering != NO_STEERING) 3416 ndev->hw_features |= NETIF_F_RXHASH; 3417 3418 ndev->features |= ndev->hw_features | 3419 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER; 3420 3421 3422 ndev->netdev_ops = &vxge_netdev_ops; 3423 3424 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT; 3425 INIT_WORK(&vdev->reset_task, vxge_reset); 3426 3427 vxge_initialize_ethtool_ops(ndev); 3428 3429 /* Allocate memory for vpath */ 3430 vdev->vpaths = kcalloc(no_of_vpath, sizeof(struct vxge_vpath), 3431 GFP_KERNEL); 3432 if (!vdev->vpaths) { 3433 vxge_debug_init(VXGE_ERR, 3434 "%s: vpath memory allocation failed", 3435 vdev->ndev->name); 3436 ret = -ENOMEM; 3437 goto _out1; 3438 } 3439 3440 vxge_debug_init(vxge_hw_device_trace_level_get(hldev), 3441 "%s : checksumming enabled", __func__); 3442 3443 if (high_dma) { 3444 ndev->features |= NETIF_F_HIGHDMA; 3445 vxge_debug_init(vxge_hw_device_trace_level_get(hldev), 3446 "%s : using High DMA", __func__); 3447 } 3448 3449 /* MTU range: 68 - 9600 */ 3450 ndev->min_mtu = VXGE_HW_MIN_MTU; 3451 ndev->max_mtu = VXGE_HW_MAX_MTU; 3452 3453 ret = register_netdev(ndev); 3454 if (ret) { 3455 vxge_debug_init(vxge_hw_device_trace_level_get(hldev), 3456 "%s: %s : device registration failed!", 3457 ndev->name, __func__); 3458 goto _out2; 3459 } 3460 3461 /* Set the factory defined MAC address initially */ 3462 ndev->addr_len = ETH_ALEN; 3463 3464 /* Make Link state as off at this point, when the Link change 3465 * interrupt comes the state will be automatically changed to 3466 * the right state. 3467 */ 3468 netif_carrier_off(ndev); 3469 3470 vxge_debug_init(vxge_hw_device_trace_level_get(hldev), 3471 "%s: Ethernet device registered", 3472 ndev->name); 3473 3474 hldev->ndev = ndev; 3475 *vdev_out = vdev; 3476 3477 /* Resetting the Device stats */ 3478 status = vxge_hw_mrpcim_stats_access( 3479 hldev, 3480 VXGE_HW_STATS_OP_CLEAR_ALL_STATS, 3481 0, 3482 0, 3483 &stat); 3484 3485 if (status == VXGE_HW_ERR_PRIVILEGED_OPERATION) 3486 vxge_debug_init( 3487 vxge_hw_device_trace_level_get(hldev), 3488 "%s: device stats clear returns" 3489 "VXGE_HW_ERR_PRIVILEGED_OPERATION", ndev->name); 3490 3491 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev), 3492 "%s: %s:%d Exiting...", 3493 ndev->name, __func__, __LINE__); 3494 3495 return ret; 3496_out2: 3497 kfree(vdev->vpaths); 3498_out1: 3499 free_netdev(ndev); 3500_out0: 3501 return ret; 3502} 3503 3504/* 3505 * vxge_device_unregister 3506 * 3507 * This function will unregister and free network device 3508 */ 3509static void vxge_device_unregister(struct __vxge_hw_device *hldev) 3510{ 3511 struct vxgedev *vdev; 3512 struct net_device *dev; 3513 char buf[IFNAMSIZ]; 3514 3515 dev = hldev->ndev; 3516 vdev = netdev_priv(dev); 3517 3518 vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name, 3519 __func__, __LINE__); 3520 3521 strlcpy(buf, dev->name, IFNAMSIZ); 3522 3523 flush_work(&vdev->reset_task); 3524 3525 /* in 2.6 will call stop() if device is up */ 3526 unregister_netdev(dev); 3527 3528 kfree(vdev->vpaths); 3529 3530 vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered", 3531 buf); 3532 vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d Exiting...", buf, 3533 __func__, __LINE__); 3534 3535 /* we are safe to free it now */ 3536 free_netdev(dev); 3537} 3538 3539/* 3540 * vxge_callback_crit_err 3541 * 3542 * This function is called by the alarm handler in interrupt context. 3543 * Driver must analyze it based on the event type. 3544 */ 3545static void 3546vxge_callback_crit_err(struct __vxge_hw_device *hldev, 3547 enum vxge_hw_event type, u64 vp_id) 3548{ 3549 struct net_device *dev = hldev->ndev; 3550 struct vxgedev *vdev = netdev_priv(dev); 3551 struct vxge_vpath *vpath = NULL; 3552 int vpath_idx; 3553 3554 vxge_debug_entryexit(vdev->level_trace, 3555 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__); 3556 3557 /* Note: This event type should be used for device wide 3558 * indications only - Serious errors, Slot freeze and critical errors 3559 */ 3560 vdev->cric_err_event = type; 3561 3562 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { 3563 vpath = &vdev->vpaths[vpath_idx]; 3564 if (vpath->device_id == vp_id) 3565 break; 3566 } 3567 3568 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) { 3569 if (type == VXGE_HW_EVENT_SLOT_FREEZE) { 3570 vxge_debug_init(VXGE_ERR, 3571 "%s: Slot is frozen", vdev->ndev->name); 3572 } else if (type == VXGE_HW_EVENT_SERR) { 3573 vxge_debug_init(VXGE_ERR, 3574 "%s: Encountered Serious Error", 3575 vdev->ndev->name); 3576 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) 3577 vxge_debug_init(VXGE_ERR, 3578 "%s: Encountered Critical Error", 3579 vdev->ndev->name); 3580 } 3581 3582 if ((type == VXGE_HW_EVENT_SERR) || 3583 (type == VXGE_HW_EVENT_SLOT_FREEZE)) { 3584 if (unlikely(vdev->exec_mode)) 3585 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); 3586 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) { 3587 vxge_hw_device_mask_all(hldev); 3588 if (unlikely(vdev->exec_mode)) 3589 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); 3590 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) || 3591 (type == VXGE_HW_EVENT_VPATH_ERR)) { 3592 3593 if (unlikely(vdev->exec_mode)) 3594 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); 3595 else { 3596 /* check if this vpath is already set for reset */ 3597 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) { 3598 3599 /* disable interrupts for this vpath */ 3600 vxge_vpath_intr_disable(vdev, vpath_idx); 3601 3602 /* stop the queue for this vpath */ 3603 netif_tx_stop_queue(vpath->fifo.txq); 3604 } 3605 } 3606 } 3607 3608 vxge_debug_entryexit(vdev->level_trace, 3609 "%s: %s:%d Exiting...", 3610 vdev->ndev->name, __func__, __LINE__); 3611} 3612 3613static void verify_bandwidth(void) 3614{ 3615 int i, band_width, total = 0, equal_priority = 0; 3616 3617 /* 1. If user enters 0 for some fifo, give equal priority to all */ 3618 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { 3619 if (bw_percentage[i] == 0) { 3620 equal_priority = 1; 3621 break; 3622 } 3623 } 3624 3625 if (!equal_priority) { 3626 /* 2. If sum exceeds 100, give equal priority to all */ 3627 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { 3628 if (bw_percentage[i] == 0xFF) 3629 break; 3630 3631 total += bw_percentage[i]; 3632 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) { 3633 equal_priority = 1; 3634 break; 3635 } 3636 } 3637 } 3638 3639 if (!equal_priority) { 3640 /* Is all the bandwidth consumed? */ 3641 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) { 3642 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) { 3643 /* Split rest of bw equally among next VPs*/ 3644 band_width = 3645 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) / 3646 (VXGE_HW_MAX_VIRTUAL_PATHS - i); 3647 if (band_width < 2) /* min of 2% */ 3648 equal_priority = 1; 3649 else { 3650 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS; 3651 i++) 3652 bw_percentage[i] = 3653 band_width; 3654 } 3655 } 3656 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS) 3657 equal_priority = 1; 3658 } 3659 3660 if (equal_priority) { 3661 vxge_debug_init(VXGE_ERR, 3662 "%s: Assigning equal bandwidth to all the vpaths", 3663 VXGE_DRIVER_NAME); 3664 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX / 3665 VXGE_HW_MAX_VIRTUAL_PATHS; 3666 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) 3667 bw_percentage[i] = bw_percentage[0]; 3668 } 3669} 3670 3671/* 3672 * Vpath configuration 3673 */ 3674static int vxge_config_vpaths(struct vxge_hw_device_config *device_config, 3675 u64 vpath_mask, struct vxge_config *config_param) 3676{ 3677 int i, no_of_vpaths = 0, default_no_vpath = 0, temp; 3678 u32 txdl_size, txdl_per_memblock; 3679 3680 temp = driver_config->vpath_per_dev; 3681 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) && 3682 (max_config_dev == VXGE_MAX_CONFIG_DEV)) { 3683 /* No more CPU. Return vpath number as zero.*/ 3684 if (driver_config->g_no_cpus == -1) 3685 return 0; 3686 3687 if (!driver_config->g_no_cpus) 3688 driver_config->g_no_cpus = 3689 netif_get_num_default_rss_queues(); 3690 3691 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1; 3692 if (!driver_config->vpath_per_dev) 3693 driver_config->vpath_per_dev = 1; 3694 3695 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) 3696 if (!vxge_bVALn(vpath_mask, i, 1)) 3697 continue; 3698 else 3699 default_no_vpath++; 3700 if (default_no_vpath < driver_config->vpath_per_dev) 3701 driver_config->vpath_per_dev = default_no_vpath; 3702 3703 driver_config->g_no_cpus = driver_config->g_no_cpus - 3704 (driver_config->vpath_per_dev * 2); 3705 if (driver_config->g_no_cpus <= 0) 3706 driver_config->g_no_cpus = -1; 3707 } 3708 3709 if (driver_config->vpath_per_dev == 1) { 3710 vxge_debug_ll_config(VXGE_TRACE, 3711 "%s: Disable tx and rx steering, " 3712 "as single vpath is configured", VXGE_DRIVER_NAME); 3713 config_param->rth_steering = NO_STEERING; 3714 config_param->tx_steering_type = NO_STEERING; 3715 device_config->rth_en = 0; 3716 } 3717 3718 /* configure bandwidth */ 3719 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) 3720 device_config->vp_config[i].min_bandwidth = bw_percentage[i]; 3721 3722 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { 3723 device_config->vp_config[i].vp_id = i; 3724 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU; 3725 if (no_of_vpaths < driver_config->vpath_per_dev) { 3726 if (!vxge_bVALn(vpath_mask, i, 1)) { 3727 vxge_debug_ll_config(VXGE_TRACE, 3728 "%s: vpath: %d is not available", 3729 VXGE_DRIVER_NAME, i); 3730 continue; 3731 } else { 3732 vxge_debug_ll_config(VXGE_TRACE, 3733 "%s: vpath: %d available", 3734 VXGE_DRIVER_NAME, i); 3735 no_of_vpaths++; 3736 } 3737 } else { 3738 vxge_debug_ll_config(VXGE_TRACE, 3739 "%s: vpath: %d is not configured, " 3740 "max_config_vpath exceeded", 3741 VXGE_DRIVER_NAME, i); 3742 break; 3743 } 3744 3745 /* Configure Tx fifo's */ 3746 device_config->vp_config[i].fifo.enable = 3747 VXGE_HW_FIFO_ENABLE; 3748 device_config->vp_config[i].fifo.max_frags = 3749 MAX_SKB_FRAGS + 1; 3750 device_config->vp_config[i].fifo.memblock_size = 3751 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE; 3752 3753 txdl_size = device_config->vp_config[i].fifo.max_frags * 3754 sizeof(struct vxge_hw_fifo_txd); 3755 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size; 3756 3757 device_config->vp_config[i].fifo.fifo_blocks = 3758 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1; 3759 3760 device_config->vp_config[i].fifo.intr = 3761 VXGE_HW_FIFO_QUEUE_INTR_DISABLE; 3762 3763 /* Configure tti properties */ 3764 device_config->vp_config[i].tti.intr_enable = 3765 VXGE_HW_TIM_INTR_ENABLE; 3766 3767 device_config->vp_config[i].tti.btimer_val = 3768 (VXGE_TTI_BTIMER_VAL * 1000) / 272; 3769 3770 device_config->vp_config[i].tti.timer_ac_en = 3771 VXGE_HW_TIM_TIMER_AC_ENABLE; 3772 3773 /* For msi-x with napi (each vector has a handler of its own) - 3774 * Set CI to OFF for all vpaths 3775 */ 3776 device_config->vp_config[i].tti.timer_ci_en = 3777 VXGE_HW_TIM_TIMER_CI_DISABLE; 3778 3779 device_config->vp_config[i].tti.timer_ri_en = 3780 VXGE_HW_TIM_TIMER_RI_DISABLE; 3781 3782 device_config->vp_config[i].tti.util_sel = 3783 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL; 3784 3785 device_config->vp_config[i].tti.ltimer_val = 3786 (VXGE_TTI_LTIMER_VAL * 1000) / 272; 3787 3788 device_config->vp_config[i].tti.rtimer_val = 3789 (VXGE_TTI_RTIMER_VAL * 1000) / 272; 3790 3791 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A; 3792 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B; 3793 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C; 3794 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A; 3795 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B; 3796 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C; 3797 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D; 3798 3799 /* Configure Rx rings */ 3800 device_config->vp_config[i].ring.enable = 3801 VXGE_HW_RING_ENABLE; 3802 3803 device_config->vp_config[i].ring.ring_blocks = 3804 VXGE_HW_DEF_RING_BLOCKS; 3805 3806 device_config->vp_config[i].ring.buffer_mode = 3807 VXGE_HW_RING_RXD_BUFFER_MODE_1; 3808 3809 device_config->vp_config[i].ring.rxds_limit = 3810 VXGE_HW_DEF_RING_RXDS_LIMIT; 3811 3812 device_config->vp_config[i].ring.scatter_mode = 3813 VXGE_HW_RING_SCATTER_MODE_A; 3814 3815 /* Configure rti properties */ 3816 device_config->vp_config[i].rti.intr_enable = 3817 VXGE_HW_TIM_INTR_ENABLE; 3818 3819 device_config->vp_config[i].rti.btimer_val = 3820 (VXGE_RTI_BTIMER_VAL * 1000)/272; 3821 3822 device_config->vp_config[i].rti.timer_ac_en = 3823 VXGE_HW_TIM_TIMER_AC_ENABLE; 3824 3825 device_config->vp_config[i].rti.timer_ci_en = 3826 VXGE_HW_TIM_TIMER_CI_DISABLE; 3827 3828 device_config->vp_config[i].rti.timer_ri_en = 3829 VXGE_HW_TIM_TIMER_RI_DISABLE; 3830 3831 device_config->vp_config[i].rti.util_sel = 3832 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL; 3833 3834 device_config->vp_config[i].rti.urange_a = 3835 RTI_RX_URANGE_A; 3836 device_config->vp_config[i].rti.urange_b = 3837 RTI_RX_URANGE_B; 3838 device_config->vp_config[i].rti.urange_c = 3839 RTI_RX_URANGE_C; 3840 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A; 3841 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B; 3842 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C; 3843 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D; 3844 3845 device_config->vp_config[i].rti.rtimer_val = 3846 (VXGE_RTI_RTIMER_VAL * 1000) / 272; 3847 3848 device_config->vp_config[i].rti.ltimer_val = 3849 (VXGE_RTI_LTIMER_VAL * 1000) / 272; 3850 3851 device_config->vp_config[i].rpa_strip_vlan_tag = 3852 vlan_tag_strip; 3853 } 3854 3855 driver_config->vpath_per_dev = temp; 3856 return no_of_vpaths; 3857} 3858 3859/* initialize device configuratrions */ 3860static void vxge_device_config_init(struct vxge_hw_device_config *device_config, 3861 int *intr_type) 3862{ 3863 /* Used for CQRQ/SRQ. */ 3864 device_config->dma_blockpool_initial = 3865 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE; 3866 3867 device_config->dma_blockpool_max = 3868 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE; 3869 3870 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT) 3871 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT; 3872 3873 if (!IS_ENABLED(CONFIG_PCI_MSI)) { 3874 vxge_debug_init(VXGE_ERR, 3875 "%s: This Kernel does not support " 3876 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME); 3877 *intr_type = INTA; 3878 } 3879 3880 /* Configure whether MSI-X or IRQL. */ 3881 switch (*intr_type) { 3882 case INTA: 3883 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE; 3884 break; 3885 3886 case MSI_X: 3887 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT; 3888 break; 3889 } 3890 3891 /* Timer period between device poll */ 3892 device_config->device_poll_millis = VXGE_TIMER_DELAY; 3893 3894 /* Configure mac based steering. */ 3895 device_config->rts_mac_en = addr_learn_en; 3896 3897 /* Configure Vpaths */ 3898 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT; 3899 3900 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ", 3901 __func__); 3902 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d", 3903 device_config->intr_mode); 3904 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d", 3905 device_config->device_poll_millis); 3906 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d", 3907 device_config->rth_en); 3908 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d", 3909 device_config->rth_it_type); 3910} 3911 3912static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask) 3913{ 3914 int i; 3915 3916 vxge_debug_init(VXGE_TRACE, 3917 "%s: %d Vpath(s) opened", 3918 vdev->ndev->name, vdev->no_of_vpath); 3919 3920 switch (vdev->config.intr_type) { 3921 case INTA: 3922 vxge_debug_init(VXGE_TRACE, 3923 "%s: Interrupt type INTA", vdev->ndev->name); 3924 break; 3925 3926 case MSI_X: 3927 vxge_debug_init(VXGE_TRACE, 3928 "%s: Interrupt type MSI-X", vdev->ndev->name); 3929 break; 3930 } 3931 3932 if (vdev->config.rth_steering) { 3933 vxge_debug_init(VXGE_TRACE, 3934 "%s: RTH steering enabled for TCP_IPV4", 3935 vdev->ndev->name); 3936 } else { 3937 vxge_debug_init(VXGE_TRACE, 3938 "%s: RTH steering disabled", vdev->ndev->name); 3939 } 3940 3941 switch (vdev->config.tx_steering_type) { 3942 case NO_STEERING: 3943 vxge_debug_init(VXGE_TRACE, 3944 "%s: Tx steering disabled", vdev->ndev->name); 3945 break; 3946 case TX_PRIORITY_STEERING: 3947 vxge_debug_init(VXGE_TRACE, 3948 "%s: Unsupported tx steering option", 3949 vdev->ndev->name); 3950 vxge_debug_init(VXGE_TRACE, 3951 "%s: Tx steering disabled", vdev->ndev->name); 3952 vdev->config.tx_steering_type = 0; 3953 break; 3954 case TX_VLAN_STEERING: 3955 vxge_debug_init(VXGE_TRACE, 3956 "%s: Unsupported tx steering option", 3957 vdev->ndev->name); 3958 vxge_debug_init(VXGE_TRACE, 3959 "%s: Tx steering disabled", vdev->ndev->name); 3960 vdev->config.tx_steering_type = 0; 3961 break; 3962 case TX_MULTIQ_STEERING: 3963 vxge_debug_init(VXGE_TRACE, 3964 "%s: Tx multiqueue steering enabled", 3965 vdev->ndev->name); 3966 break; 3967 case TX_PORT_STEERING: 3968 vxge_debug_init(VXGE_TRACE, 3969 "%s: Tx port steering enabled", 3970 vdev->ndev->name); 3971 break; 3972 default: 3973 vxge_debug_init(VXGE_ERR, 3974 "%s: Unsupported tx steering type", 3975 vdev->ndev->name); 3976 vxge_debug_init(VXGE_TRACE, 3977 "%s: Tx steering disabled", vdev->ndev->name); 3978 vdev->config.tx_steering_type = 0; 3979 } 3980 3981 if (vdev->config.addr_learn_en) 3982 vxge_debug_init(VXGE_TRACE, 3983 "%s: MAC Address learning enabled", vdev->ndev->name); 3984 3985 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { 3986 if (!vxge_bVALn(vpath_mask, i, 1)) 3987 continue; 3988 vxge_debug_ll_config(VXGE_TRACE, 3989 "%s: MTU size - %d", vdev->ndev->name, 3990 ((vdev->devh))-> 3991 config.vp_config[i].mtu); 3992 vxge_debug_init(VXGE_TRACE, 3993 "%s: VLAN tag stripping %s", vdev->ndev->name, 3994 ((vdev->devh))-> 3995 config.vp_config[i].rpa_strip_vlan_tag 3996 ? "Enabled" : "Disabled"); 3997 vxge_debug_ll_config(VXGE_TRACE, 3998 "%s: Max frags : %d", vdev->ndev->name, 3999 ((vdev->devh))-> 4000 config.vp_config[i].fifo.max_frags); 4001 break; 4002 } 4003} 4004 4005/** 4006 * vxge_pm_suspend - vxge power management suspend entry point 4007 * @dev_d: device pointer 4008 * 4009 */ 4010static int __maybe_unused vxge_pm_suspend(struct device *dev_d) 4011{ 4012 return -ENOSYS; 4013} 4014/** 4015 * vxge_pm_resume - vxge power management resume entry point 4016 * @dev_d: device pointer 4017 * 4018 */ 4019static int __maybe_unused vxge_pm_resume(struct device *dev_d) 4020{ 4021 return -ENOSYS; 4022} 4023 4024/** 4025 * vxge_io_error_detected - called when PCI error is detected 4026 * @pdev: Pointer to PCI device 4027 * @state: The current pci connection state 4028 * 4029 * This function is called after a PCI bus error affecting 4030 * this device has been detected. 4031 */ 4032static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev, 4033 pci_channel_state_t state) 4034{ 4035 struct __vxge_hw_device *hldev = pci_get_drvdata(pdev); 4036 struct net_device *netdev = hldev->ndev; 4037 4038 netif_device_detach(netdev); 4039 4040 if (state == pci_channel_io_perm_failure) 4041 return PCI_ERS_RESULT_DISCONNECT; 4042 4043 if (netif_running(netdev)) { 4044 /* Bring down the card, while avoiding PCI I/O */ 4045 do_vxge_close(netdev, 0); 4046 } 4047 4048 pci_disable_device(pdev); 4049 4050 return PCI_ERS_RESULT_NEED_RESET; 4051} 4052 4053/** 4054 * vxge_io_slot_reset - called after the pci bus has been reset. 4055 * @pdev: Pointer to PCI device 4056 * 4057 * Restart the card from scratch, as if from a cold-boot. 4058 * At this point, the card has exprienced a hard reset, 4059 * followed by fixups by BIOS, and has its config space 4060 * set up identically to what it was at cold boot. 4061 */ 4062static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev) 4063{ 4064 struct __vxge_hw_device *hldev = pci_get_drvdata(pdev); 4065 struct net_device *netdev = hldev->ndev; 4066 4067 struct vxgedev *vdev = netdev_priv(netdev); 4068 4069 if (pci_enable_device(pdev)) { 4070 netdev_err(netdev, "Cannot re-enable device after reset\n"); 4071 return PCI_ERS_RESULT_DISCONNECT; 4072 } 4073 4074 pci_set_master(pdev); 4075 do_vxge_reset(vdev, VXGE_LL_FULL_RESET); 4076 4077 return PCI_ERS_RESULT_RECOVERED; 4078} 4079 4080/** 4081 * vxge_io_resume - called when traffic can start flowing again. 4082 * @pdev: Pointer to PCI device 4083 * 4084 * This callback is called when the error recovery driver tells 4085 * us that its OK to resume normal operation. 4086 */ 4087static void vxge_io_resume(struct pci_dev *pdev) 4088{ 4089 struct __vxge_hw_device *hldev = pci_get_drvdata(pdev); 4090 struct net_device *netdev = hldev->ndev; 4091 4092 if (netif_running(netdev)) { 4093 if (vxge_open(netdev)) { 4094 netdev_err(netdev, 4095 "Can't bring device back up after reset\n"); 4096 return; 4097 } 4098 } 4099 4100 netif_device_attach(netdev); 4101} 4102 4103static inline u32 vxge_get_num_vfs(u64 function_mode) 4104{ 4105 u32 num_functions = 0; 4106 4107 switch (function_mode) { 4108 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION: 4109 case VXGE_HW_FUNCTION_MODE_SRIOV_8: 4110 num_functions = 8; 4111 break; 4112 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION: 4113 num_functions = 1; 4114 break; 4115 case VXGE_HW_FUNCTION_MODE_SRIOV: 4116 case VXGE_HW_FUNCTION_MODE_MRIOV: 4117 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17: 4118 num_functions = 17; 4119 break; 4120 case VXGE_HW_FUNCTION_MODE_SRIOV_4: 4121 num_functions = 4; 4122 break; 4123 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2: 4124 num_functions = 2; 4125 break; 4126 case VXGE_HW_FUNCTION_MODE_MRIOV_8: 4127 num_functions = 8; /* TODO */ 4128 break; 4129 } 4130 return num_functions; 4131} 4132 4133int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override) 4134{ 4135 struct __vxge_hw_device *hldev = vdev->devh; 4136 u32 maj, min, bld, cmaj, cmin, cbld; 4137 enum vxge_hw_status status; 4138 const struct firmware *fw; 4139 int ret; 4140 4141 ret = request_firmware(&fw, fw_name, &vdev->pdev->dev); 4142 if (ret) { 4143 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found", 4144 VXGE_DRIVER_NAME, fw_name); 4145 goto out; 4146 } 4147 4148 /* Load the new firmware onto the adapter */ 4149 status = vxge_update_fw_image(hldev, fw->data, fw->size); 4150 if (status != VXGE_HW_OK) { 4151 vxge_debug_init(VXGE_ERR, 4152 "%s: FW image download to adapter failed '%s'.", 4153 VXGE_DRIVER_NAME, fw_name); 4154 ret = -EIO; 4155 goto out; 4156 } 4157 4158 /* Read the version of the new firmware */ 4159 status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld); 4160 if (status != VXGE_HW_OK) { 4161 vxge_debug_init(VXGE_ERR, 4162 "%s: Upgrade read version failed '%s'.", 4163 VXGE_DRIVER_NAME, fw_name); 4164 ret = -EIO; 4165 goto out; 4166 } 4167 4168 cmaj = vdev->config.device_hw_info.fw_version.major; 4169 cmin = vdev->config.device_hw_info.fw_version.minor; 4170 cbld = vdev->config.device_hw_info.fw_version.build; 4171 /* It's possible the version in /lib/firmware is not the latest version. 4172 * If so, we could get into a loop of trying to upgrade to the latest 4173 * and flashing the older version. 4174 */ 4175 if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) && 4176 !override) { 4177 ret = -EINVAL; 4178 goto out; 4179 } 4180 4181 printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n", 4182 maj, min, bld); 4183 4184 /* Flash the adapter with the new firmware */ 4185 status = vxge_hw_flash_fw(hldev); 4186 if (status != VXGE_HW_OK) { 4187 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.", 4188 VXGE_DRIVER_NAME, fw_name); 4189 ret = -EIO; 4190 goto out; 4191 } 4192 4193 printk(KERN_NOTICE "Upgrade of firmware successful! Adapter must be " 4194 "hard reset before using, thus requiring a system reboot or a " 4195 "hotplug event.\n"); 4196 4197out: 4198 release_firmware(fw); 4199 return ret; 4200} 4201 4202static int vxge_probe_fw_update(struct vxgedev *vdev) 4203{ 4204 u32 maj, min, bld; 4205 int ret, gpxe = 0; 4206 char *fw_name; 4207 4208 maj = vdev->config.device_hw_info.fw_version.major; 4209 min = vdev->config.device_hw_info.fw_version.minor; 4210 bld = vdev->config.device_hw_info.fw_version.build; 4211 4212 if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER) 4213 return 0; 4214 4215 /* Ignore the build number when determining if the current firmware is 4216 * "too new" to load the driver 4217 */ 4218 if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) { 4219 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known " 4220 "version, unable to load driver\n", 4221 VXGE_DRIVER_NAME); 4222 return -EINVAL; 4223 } 4224 4225 /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to 4226 * work with this driver. 4227 */ 4228 if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) { 4229 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be " 4230 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld); 4231 return -EINVAL; 4232 } 4233 4234 /* If file not specified, determine gPXE or not */ 4235 if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) { 4236 int i; 4237 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) 4238 if (vdev->devh->eprom_versions[i]) { 4239 gpxe = 1; 4240 break; 4241 } 4242 } 4243 if (gpxe) 4244 fw_name = "vxge/X3fw-pxe.ncf"; 4245 else 4246 fw_name = "vxge/X3fw.ncf"; 4247 4248 ret = vxge_fw_upgrade(vdev, fw_name, 0); 4249 /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on 4250 * probe, so ignore them 4251 */ 4252 if (ret != -EINVAL && ret != -ENOENT) 4253 return -EIO; 4254 else 4255 ret = 0; 4256 4257 if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) > 4258 VXGE_FW_VER(maj, min, 0)) { 4259 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to" 4260 " be used with this driver.", 4261 VXGE_DRIVER_NAME, maj, min, bld); 4262 return -EINVAL; 4263 } 4264 4265 return ret; 4266} 4267 4268static int is_sriov_initialized(struct pci_dev *pdev) 4269{ 4270 int pos; 4271 u16 ctrl; 4272 4273 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 4274 if (pos) { 4275 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl); 4276 if (ctrl & PCI_SRIOV_CTRL_VFE) 4277 return 1; 4278 } 4279 return 0; 4280} 4281 4282static const struct vxge_hw_uld_cbs vxge_callbacks = { 4283 .link_up = vxge_callback_link_up, 4284 .link_down = vxge_callback_link_down, 4285 .crit_err = vxge_callback_crit_err, 4286}; 4287 4288/** 4289 * vxge_probe 4290 * @pdev : structure containing the PCI related information of the device. 4291 * @pre: List of PCI devices supported by the driver listed in vxge_id_table. 4292 * Description: 4293 * This function is called when a new PCI device gets detected and initializes 4294 * it. 4295 * Return value: 4296 * returns 0 on success and negative on failure. 4297 * 4298 */ 4299static int 4300vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre) 4301{ 4302 struct __vxge_hw_device *hldev; 4303 enum vxge_hw_status status; 4304 int ret; 4305 int high_dma = 0; 4306 u64 vpath_mask = 0; 4307 struct vxgedev *vdev; 4308 struct vxge_config *ll_config = NULL; 4309 struct vxge_hw_device_config *device_config = NULL; 4310 struct vxge_hw_device_attr attr; 4311 int i, j, no_of_vpath = 0, max_vpath_supported = 0; 4312 u8 *macaddr; 4313 struct vxge_mac_addrs *entry; 4314 static int bus = -1, device = -1; 4315 u32 host_type; 4316 u8 new_device = 0; 4317 enum vxge_hw_status is_privileged; 4318 u32 function_mode; 4319 u32 num_vfs = 0; 4320 4321 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); 4322 attr.pdev = pdev; 4323 4324 /* In SRIOV-17 mode, functions of the same adapter 4325 * can be deployed on different buses 4326 */ 4327 if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) && 4328 !pdev->is_virtfn) 4329 new_device = 1; 4330 4331 bus = pdev->bus->number; 4332 device = PCI_SLOT(pdev->devfn); 4333 4334 if (new_device) { 4335 if (driver_config->config_dev_cnt && 4336 (driver_config->config_dev_cnt != 4337 driver_config->total_dev_cnt)) 4338 vxge_debug_init(VXGE_ERR, 4339 "%s: Configured %d of %d devices", 4340 VXGE_DRIVER_NAME, 4341 driver_config->config_dev_cnt, 4342 driver_config->total_dev_cnt); 4343 driver_config->config_dev_cnt = 0; 4344 driver_config->total_dev_cnt = 0; 4345 } 4346 4347 /* Now making the CPU based no of vpath calculation 4348 * applicable for individual functions as well. 4349 */ 4350 driver_config->g_no_cpus = 0; 4351 driver_config->vpath_per_dev = max_config_vpath; 4352 4353 driver_config->total_dev_cnt++; 4354 if (++driver_config->config_dev_cnt > max_config_dev) { 4355 ret = 0; 4356 goto _exit0; 4357 } 4358 4359 device_config = kzalloc(sizeof(struct vxge_hw_device_config), 4360 GFP_KERNEL); 4361 if (!device_config) { 4362 ret = -ENOMEM; 4363 vxge_debug_init(VXGE_ERR, 4364 "device_config : malloc failed %s %d", 4365 __FILE__, __LINE__); 4366 goto _exit0; 4367 } 4368 4369 ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL); 4370 if (!ll_config) { 4371 ret = -ENOMEM; 4372 vxge_debug_init(VXGE_ERR, 4373 "device_config : malloc failed %s %d", 4374 __FILE__, __LINE__); 4375 goto _exit0; 4376 } 4377 ll_config->tx_steering_type = TX_MULTIQ_STEERING; 4378 ll_config->intr_type = MSI_X; 4379 ll_config->napi_weight = NEW_NAPI_WEIGHT; 4380 ll_config->rth_steering = RTH_STEERING; 4381 4382 /* get the default configuration parameters */ 4383 vxge_hw_device_config_default_get(device_config); 4384 4385 /* initialize configuration parameters */ 4386 vxge_device_config_init(device_config, &ll_config->intr_type); 4387 4388 ret = pci_enable_device(pdev); 4389 if (ret) { 4390 vxge_debug_init(VXGE_ERR, 4391 "%s : can not enable PCI device", __func__); 4392 goto _exit0; 4393 } 4394 4395 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { 4396 vxge_debug_ll_config(VXGE_TRACE, 4397 "%s : using 64bit DMA", __func__); 4398 4399 high_dma = 1; 4400 4401 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 4402 vxge_debug_init(VXGE_ERR, 4403 "%s : unable to obtain 64bit DMA for " 4404 "consistent allocations", __func__); 4405 ret = -ENOMEM; 4406 goto _exit1; 4407 } 4408 } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { 4409 vxge_debug_ll_config(VXGE_TRACE, 4410 "%s : using 32bit DMA", __func__); 4411 } else { 4412 ret = -ENOMEM; 4413 goto _exit1; 4414 } 4415 4416 ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME); 4417 if (ret) { 4418 vxge_debug_init(VXGE_ERR, 4419 "%s : request regions failed", __func__); 4420 goto _exit1; 4421 } 4422 4423 pci_set_master(pdev); 4424 4425 attr.bar0 = pci_ioremap_bar(pdev, 0); 4426 if (!attr.bar0) { 4427 vxge_debug_init(VXGE_ERR, 4428 "%s : cannot remap io memory bar0", __func__); 4429 ret = -ENODEV; 4430 goto _exit2; 4431 } 4432 vxge_debug_ll_config(VXGE_TRACE, 4433 "pci ioremap bar0: %p:0x%llx", 4434 attr.bar0, 4435 (unsigned long long)pci_resource_start(pdev, 0)); 4436 4437 status = vxge_hw_device_hw_info_get(attr.bar0, 4438 &ll_config->device_hw_info); 4439 if (status != VXGE_HW_OK) { 4440 vxge_debug_init(VXGE_ERR, 4441 "%s: Reading of hardware info failed." 4442 "Please try upgrading the firmware.", VXGE_DRIVER_NAME); 4443 ret = -EINVAL; 4444 goto _exit3; 4445 } 4446 4447 vpath_mask = ll_config->device_hw_info.vpath_mask; 4448 if (vpath_mask == 0) { 4449 vxge_debug_ll_config(VXGE_TRACE, 4450 "%s: No vpaths available in device", VXGE_DRIVER_NAME); 4451 ret = -EINVAL; 4452 goto _exit3; 4453 } 4454 4455 vxge_debug_ll_config(VXGE_TRACE, 4456 "%s:%d Vpath mask = %llx", __func__, __LINE__, 4457 (unsigned long long)vpath_mask); 4458 4459 function_mode = ll_config->device_hw_info.function_mode; 4460 host_type = ll_config->device_hw_info.host_type; 4461 is_privileged = __vxge_hw_device_is_privilaged(host_type, 4462 ll_config->device_hw_info.func_id); 4463 4464 /* Check how many vpaths are available */ 4465 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { 4466 if (!((vpath_mask) & vxge_mBIT(i))) 4467 continue; 4468 max_vpath_supported++; 4469 } 4470 4471 if (new_device) 4472 num_vfs = vxge_get_num_vfs(function_mode) - 1; 4473 4474 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */ 4475 if (is_sriov(function_mode) && !is_sriov_initialized(pdev) && 4476 (ll_config->intr_type != INTA)) { 4477 ret = pci_enable_sriov(pdev, num_vfs); 4478 if (ret) 4479 vxge_debug_ll_config(VXGE_ERR, 4480 "Failed in enabling SRIOV mode: %d\n", ret); 4481 /* No need to fail out, as an error here is non-fatal */ 4482 } 4483 4484 /* 4485 * Configure vpaths and get driver configured number of vpaths 4486 * which is less than or equal to the maximum vpaths per function. 4487 */ 4488 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config); 4489 if (!no_of_vpath) { 4490 vxge_debug_ll_config(VXGE_ERR, 4491 "%s: No more vpaths to configure", VXGE_DRIVER_NAME); 4492 ret = 0; 4493 goto _exit3; 4494 } 4495 4496 /* Setting driver callbacks */ 4497 attr.uld_callbacks = &vxge_callbacks; 4498 4499 status = vxge_hw_device_initialize(&hldev, &attr, device_config); 4500 if (status != VXGE_HW_OK) { 4501 vxge_debug_init(VXGE_ERR, 4502 "Failed to initialize device (%d)", status); 4503 ret = -EINVAL; 4504 goto _exit3; 4505 } 4506 4507 if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major, 4508 ll_config->device_hw_info.fw_version.minor, 4509 ll_config->device_hw_info.fw_version.build) >= 4510 VXGE_EPROM_FW_VER) { 4511 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES]; 4512 4513 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img); 4514 if (status != VXGE_HW_OK) { 4515 vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed", 4516 VXGE_DRIVER_NAME); 4517 /* This is a non-fatal error, continue */ 4518 } 4519 4520 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) { 4521 hldev->eprom_versions[i] = img[i].version; 4522 if (!img[i].is_valid) 4523 break; 4524 vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version " 4525 "%d.%d.%d.%d", VXGE_DRIVER_NAME, i, 4526 VXGE_EPROM_IMG_MAJOR(img[i].version), 4527 VXGE_EPROM_IMG_MINOR(img[i].version), 4528 VXGE_EPROM_IMG_FIX(img[i].version), 4529 VXGE_EPROM_IMG_BUILD(img[i].version)); 4530 } 4531 } 4532 4533 /* if FCS stripping is not disabled in MAC fail driver load */ 4534 status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask); 4535 if (status != VXGE_HW_OK) { 4536 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC" 4537 " failing driver load", VXGE_DRIVER_NAME); 4538 ret = -EINVAL; 4539 goto _exit4; 4540 } 4541 4542 /* Always enable HWTS. This will always cause the FCS to be invalid, 4543 * due to the fact that HWTS is using the FCS as the location of the 4544 * timestamp. The HW FCS checking will still correctly determine if 4545 * there is a valid checksum, and the FCS is being removed by the driver 4546 * anyway. So no functionality is being lost. Since it is always 4547 * enabled, we now simply use the ioctl call to set whether or not the 4548 * driver should be paying attention to the HWTS. 4549 */ 4550 if (is_privileged == VXGE_HW_OK) { 4551 status = vxge_timestamp_config(hldev); 4552 if (status != VXGE_HW_OK) { 4553 vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed", 4554 VXGE_DRIVER_NAME); 4555 ret = -EFAULT; 4556 goto _exit4; 4557 } 4558 } 4559 4560 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL); 4561 4562 /* set private device info */ 4563 pci_set_drvdata(pdev, hldev); 4564 4565 ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS; 4566 ll_config->addr_learn_en = addr_learn_en; 4567 ll_config->rth_algorithm = RTH_ALG_JENKINS; 4568 ll_config->rth_hash_type_tcpipv4 = 1; 4569 ll_config->rth_hash_type_ipv4 = 0; 4570 ll_config->rth_hash_type_tcpipv6 = 0; 4571 ll_config->rth_hash_type_ipv6 = 0; 4572 ll_config->rth_hash_type_tcpipv6ex = 0; 4573 ll_config->rth_hash_type_ipv6ex = 0; 4574 ll_config->rth_bkt_sz = RTH_BUCKET_SIZE; 4575 ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE; 4576 ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE; 4577 4578 ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath, 4579 &vdev); 4580 if (ret) { 4581 ret = -EINVAL; 4582 goto _exit4; 4583 } 4584 4585 ret = vxge_probe_fw_update(vdev); 4586 if (ret) 4587 goto _exit5; 4588 4589 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL); 4590 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev), 4591 vxge_hw_device_trace_level_get(hldev)); 4592 4593 /* set private HW device info */ 4594 vdev->mtu = VXGE_HW_DEFAULT_MTU; 4595 vdev->bar0 = attr.bar0; 4596 vdev->max_vpath_supported = max_vpath_supported; 4597 vdev->no_of_vpath = no_of_vpath; 4598 4599 /* Virtual Path count */ 4600 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { 4601 if (!vxge_bVALn(vpath_mask, i, 1)) 4602 continue; 4603 if (j >= vdev->no_of_vpath) 4604 break; 4605 4606 vdev->vpaths[j].is_configured = 1; 4607 vdev->vpaths[j].device_id = i; 4608 vdev->vpaths[j].ring.driver_id = j; 4609 vdev->vpaths[j].vdev = vdev; 4610 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath; 4611 memcpy((u8 *)vdev->vpaths[j].macaddr, 4612 ll_config->device_hw_info.mac_addrs[i], 4613 ETH_ALEN); 4614 4615 /* Initialize the mac address list header */ 4616 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list); 4617 4618 vdev->vpaths[j].mac_addr_cnt = 0; 4619 vdev->vpaths[j].mcast_addr_cnt = 0; 4620 j++; 4621 } 4622 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE; 4623 vdev->max_config_port = max_config_port; 4624 4625 vdev->vlan_tag_strip = vlan_tag_strip; 4626 4627 /* map the hashing selector table to the configured vpaths */ 4628 for (i = 0; i < vdev->no_of_vpath; i++) 4629 vdev->vpath_selector[i] = vpath_selector[i]; 4630 4631 macaddr = (u8 *)vdev->vpaths[0].macaddr; 4632 4633 ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0'; 4634 ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0'; 4635 ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0'; 4636 4637 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s", 4638 vdev->ndev->name, ll_config->device_hw_info.serial_number); 4639 4640 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s", 4641 vdev->ndev->name, ll_config->device_hw_info.part_number); 4642 4643 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter", 4644 vdev->ndev->name, ll_config->device_hw_info.product_desc); 4645 4646 vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM", 4647 vdev->ndev->name, macaddr); 4648 4649 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d", 4650 vdev->ndev->name, vxge_hw_device_link_width_get(hldev)); 4651 4652 vxge_debug_init(VXGE_TRACE, 4653 "%s: Firmware version : %s Date : %s", vdev->ndev->name, 4654 ll_config->device_hw_info.fw_version.version, 4655 ll_config->device_hw_info.fw_date.date); 4656 4657 if (new_device) { 4658 switch (ll_config->device_hw_info.function_mode) { 4659 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION: 4660 vxge_debug_init(VXGE_TRACE, 4661 "%s: Single Function Mode Enabled", vdev->ndev->name); 4662 break; 4663 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION: 4664 vxge_debug_init(VXGE_TRACE, 4665 "%s: Multi Function Mode Enabled", vdev->ndev->name); 4666 break; 4667 case VXGE_HW_FUNCTION_MODE_SRIOV: 4668 vxge_debug_init(VXGE_TRACE, 4669 "%s: Single Root IOV Mode Enabled", vdev->ndev->name); 4670 break; 4671 case VXGE_HW_FUNCTION_MODE_MRIOV: 4672 vxge_debug_init(VXGE_TRACE, 4673 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name); 4674 break; 4675 } 4676 } 4677 4678 vxge_print_parm(vdev, vpath_mask); 4679 4680 /* Store the fw version for ethttool option */ 4681 strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version); 4682 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN); 4683 4684 /* Copy the station mac address to the list */ 4685 for (i = 0; i < vdev->no_of_vpath; i++) { 4686 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL); 4687 if (NULL == entry) { 4688 vxge_debug_init(VXGE_ERR, 4689 "%s: mac_addr_list : memory allocation failed", 4690 vdev->ndev->name); 4691 ret = -EPERM; 4692 goto _exit6; 4693 } 4694 macaddr = (u8 *)&entry->macaddr; 4695 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN); 4696 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list); 4697 vdev->vpaths[i].mac_addr_cnt = 1; 4698 } 4699 4700 kfree(device_config); 4701 4702 /* 4703 * INTA is shared in multi-function mode. This is unlike the INTA 4704 * implementation in MR mode, where each VH has its own INTA message. 4705 * - INTA is masked (disabled) as long as at least one function sets 4706 * its TITAN_MASK_ALL_INT.ALARM bit. 4707 * - INTA is unmasked (enabled) when all enabled functions have cleared 4708 * their own TITAN_MASK_ALL_INT.ALARM bit. 4709 * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up. 4710 * Though this driver leaves the top level interrupts unmasked while 4711 * leaving the required module interrupt bits masked on exit, there 4712 * could be a rougue driver around that does not follow this procedure 4713 * resulting in a failure to generate interrupts. The following code is 4714 * present to prevent such a failure. 4715 */ 4716 4717 if (ll_config->device_hw_info.function_mode == 4718 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) 4719 if (vdev->config.intr_type == INTA) 4720 vxge_hw_device_unmask_all(hldev); 4721 4722 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...", 4723 vdev->ndev->name, __func__, __LINE__); 4724 4725 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL); 4726 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev), 4727 vxge_hw_device_trace_level_get(hldev)); 4728 4729 kfree(ll_config); 4730 return 0; 4731 4732_exit6: 4733 for (i = 0; i < vdev->no_of_vpath; i++) 4734 vxge_free_mac_add_list(&vdev->vpaths[i]); 4735_exit5: 4736 vxge_device_unregister(hldev); 4737_exit4: 4738 vxge_hw_device_terminate(hldev); 4739 pci_disable_sriov(pdev); 4740_exit3: 4741 iounmap(attr.bar0); 4742_exit2: 4743 pci_release_region(pdev, 0); 4744_exit1: 4745 pci_disable_device(pdev); 4746_exit0: 4747 kfree(ll_config); 4748 kfree(device_config); 4749 driver_config->config_dev_cnt--; 4750 driver_config->total_dev_cnt--; 4751 return ret; 4752} 4753 4754/** 4755 * vxge_rem_nic - Free the PCI device 4756 * @pdev: structure containing the PCI related information of the device. 4757 * Description: This function is called by the Pci subsystem to release a 4758 * PCI device and free up all resource held up by the device. 4759 */ 4760static void vxge_remove(struct pci_dev *pdev) 4761{ 4762 struct __vxge_hw_device *hldev; 4763 struct vxgedev *vdev; 4764 int i; 4765 4766 hldev = pci_get_drvdata(pdev); 4767 if (hldev == NULL) 4768 return; 4769 4770 vdev = netdev_priv(hldev->ndev); 4771 4772 vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__); 4773 vxge_debug_init(vdev->level_trace, "%s : removing PCI device...", 4774 __func__); 4775 4776 for (i = 0; i < vdev->no_of_vpath; i++) 4777 vxge_free_mac_add_list(&vdev->vpaths[i]); 4778 4779 vxge_device_unregister(hldev); 4780 /* Do not call pci_disable_sriov here, as it will break child devices */ 4781 vxge_hw_device_terminate(hldev); 4782 iounmap(vdev->bar0); 4783 pci_release_region(pdev, 0); 4784 pci_disable_device(pdev); 4785 driver_config->config_dev_cnt--; 4786 driver_config->total_dev_cnt--; 4787 4788 vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered", 4789 __func__, __LINE__); 4790 vxge_debug_entryexit(vdev->level_trace, "%s:%d Exiting...", __func__, 4791 __LINE__); 4792} 4793 4794static const struct pci_error_handlers vxge_err_handler = { 4795 .error_detected = vxge_io_error_detected, 4796 .slot_reset = vxge_io_slot_reset, 4797 .resume = vxge_io_resume, 4798}; 4799 4800static SIMPLE_DEV_PM_OPS(vxge_pm_ops, vxge_pm_suspend, vxge_pm_resume); 4801 4802static struct pci_driver vxge_driver = { 4803 .name = VXGE_DRIVER_NAME, 4804 .id_table = vxge_id_table, 4805 .probe = vxge_probe, 4806 .remove = vxge_remove, 4807 .driver.pm = &vxge_pm_ops, 4808 .err_handler = &vxge_err_handler, 4809}; 4810 4811static int __init 4812vxge_starter(void) 4813{ 4814 int ret = 0; 4815 4816 pr_info("Copyright(c) 2002-2010 Exar Corp.\n"); 4817 pr_info("Driver version: %s\n", DRV_VERSION); 4818 4819 verify_bandwidth(); 4820 4821 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL); 4822 if (!driver_config) 4823 return -ENOMEM; 4824 4825 ret = pci_register_driver(&vxge_driver); 4826 if (ret) { 4827 kfree(driver_config); 4828 goto err; 4829 } 4830 4831 if (driver_config->config_dev_cnt && 4832 (driver_config->config_dev_cnt != driver_config->total_dev_cnt)) 4833 vxge_debug_init(VXGE_ERR, 4834 "%s: Configured %d of %d devices", 4835 VXGE_DRIVER_NAME, driver_config->config_dev_cnt, 4836 driver_config->total_dev_cnt); 4837err: 4838 return ret; 4839} 4840 4841static void __exit 4842vxge_closer(void) 4843{ 4844 pci_unregister_driver(&vxge_driver); 4845 kfree(driver_config); 4846} 4847module_init(vxge_starter); 4848module_exit(vxge_closer); 4849