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vxge-main.c
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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 
62 MODULE_LICENSE("Dual BSD/GPL");
63 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
64  "Virtualized Server Adapter");
65 
66 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
68  PCI_ANY_ID},
70  PCI_ANY_ID},
71  {0}
72 };
73 
74 MODULE_DEVICE_TABLE(pci, vxge_id_table);
75 
79 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
82 
83 static 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};
85 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
86  {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
87 module_param_array(bw_percentage, uint, NULL, 0);
88 
89 static struct vxge_drv_config *driver_config;
90 
91 static inline int is_vxge_card_up(struct vxgedev *vdev)
92 {
93  return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
94 }
95 
96 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
97 {
98  struct sk_buff **skb_ptr = NULL;
99  struct sk_buff **temp;
100 #define NR_SKB_COMPLETED 128
102  int more;
103 
104  do {
105  more = 0;
106  skb_ptr = completed;
107 
108  if (__netif_tx_trylock(fifo->txq)) {
109  vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
110  NR_SKB_COMPLETED, &more);
111  __netif_tx_unlock(fifo->txq);
112  }
113 
114  /* free SKBs */
115  for (temp = completed; temp != skb_ptr; temp++)
116  dev_kfree_skb_irq(*temp);
117  } while (more);
118 }
119 
120 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
121 {
122  int i;
123 
124  /* Complete all transmits */
125  for (i = 0; i < vdev->no_of_vpath; i++)
126  VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
127 }
128 
129 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
130 {
131  int i;
132  struct vxge_ring *ring;
133 
134  /* Complete all receives*/
135  for (i = 0; i < vdev->no_of_vpath; i++) {
136  ring = &vdev->vpaths[i].ring;
138  }
139 }
140 
141 /*
142  * vxge_callback_link_up
143  *
144  * This function is called during interrupt context to notify link up state
145  * change.
146  */
147 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
148 {
149  struct net_device *dev = hldev->ndev;
150  struct vxgedev *vdev = netdev_priv(dev);
151 
152  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
153  vdev->ndev->name, __func__, __LINE__);
154  netdev_notice(vdev->ndev, "Link Up\n");
155  vdev->stats.link_up++;
156 
157  netif_carrier_on(vdev->ndev);
158  netif_tx_wake_all_queues(vdev->ndev);
159 
161  "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
162 }
163 
164 /*
165  * vxge_callback_link_down
166  *
167  * This function is called during interrupt context to notify link down state
168  * change.
169  */
170 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
171 {
172  struct net_device *dev = hldev->ndev;
173  struct vxgedev *vdev = netdev_priv(dev);
174 
176  "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
177  netdev_notice(vdev->ndev, "Link Down\n");
178 
179  vdev->stats.link_down++;
180  netif_carrier_off(vdev->ndev);
181  netif_tx_stop_all_queues(vdev->ndev);
182 
184  "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
185 }
186 
187 /*
188  * vxge_rx_alloc
189  *
190  * Allocate SKB.
191  */
192 static struct sk_buff *
193 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
194 {
195  struct net_device *dev;
196  struct sk_buff *skb;
197  struct vxge_rx_priv *rx_priv;
198 
199  dev = ring->ndev;
200  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
201  ring->ndev->name, __func__, __LINE__);
202 
203  rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
204 
205  /* try to allocate skb first. this one may fail */
206  skb = netdev_alloc_skb(dev, skb_size +
208  if (skb == NULL) {
210  "%s: out of memory to allocate SKB", dev->name);
211  ring->stats.skb_alloc_fail++;
212  return NULL;
213  }
214 
216  "%s: %s:%d Skb : 0x%p", ring->ndev->name,
217  __func__, __LINE__, skb);
218 
219  skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
220 
221  rx_priv->skb = skb;
222  rx_priv->skb_data = NULL;
223  rx_priv->data_size = skb_size;
225  "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
226 
227  return skb;
228 }
229 
230 /*
231  * vxge_rx_map
232  */
233 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
234 {
235  struct vxge_rx_priv *rx_priv;
237 
238  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
239  ring->ndev->name, __func__, __LINE__);
240  rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
241 
242  rx_priv->skb_data = rx_priv->skb->data;
243  dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
244  rx_priv->data_size, PCI_DMA_FROMDEVICE);
245 
246  if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
247  ring->stats.pci_map_fail++;
248  return -EIO;
249  }
251  "%s: %s:%d 1 buffer mode dma_addr = 0x%llx",
252  ring->ndev->name, __func__, __LINE__,
253  (unsigned long long)dma_addr);
254  vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
255 
256  rx_priv->data_dma = dma_addr;
258  "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
259 
260  return 0;
261 }
262 
263 /*
264  * vxge_rx_initial_replenish
265  * Allocation of RxD as an initial replenish procedure.
266  */
267 static enum vxge_hw_status
268 vxge_rx_initial_replenish(void *dtrh, void *userdata)
269 {
270  struct vxge_ring *ring = (struct vxge_ring *)userdata;
271  struct vxge_rx_priv *rx_priv;
272 
273  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
274  ring->ndev->name, __func__, __LINE__);
275  if (vxge_rx_alloc(dtrh, ring,
276  VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
277  return VXGE_HW_FAIL;
278 
279  if (vxge_rx_map(dtrh, ring)) {
280  rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
281  dev_kfree_skb(rx_priv->skb);
282 
283  return VXGE_HW_FAIL;
284  }
286  "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
287 
288  return VXGE_HW_OK;
289 }
290 
291 static inline void
292 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
293  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
294 {
295 
296  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
297  ring->ndev->name, __func__, __LINE__);
298  skb_record_rx_queue(skb, ring->driver_id);
299  skb->protocol = eth_type_trans(skb, ring->ndev);
300 
301  u64_stats_update_begin(&ring->stats.syncp);
302  ring->stats.rx_frms++;
303  ring->stats.rx_bytes += pkt_length;
304 
305  if (skb->pkt_type == PACKET_MULTICAST)
306  ring->stats.rx_mcast++;
307  u64_stats_update_end(&ring->stats.syncp);
308 
310  "%s: %s:%d skb protocol = %d",
311  ring->ndev->name, __func__, __LINE__, skb->protocol);
312 
313  if (ext_info->vlan &&
315  __vlan_hwaccel_put_tag(skb, ext_info->vlan);
316  napi_gro_receive(ring->napi_p, skb);
317 
319  "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
320 }
321 
322 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
323  struct vxge_rx_priv *rx_priv)
324 {
325  pci_dma_sync_single_for_device(ring->pdev,
326  rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
327 
328  vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
329  vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
330 }
331 
332 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
333  void *post_dtr, struct __vxge_hw_ring *ringh)
334 {
335  int dtr_count = *dtr_cnt;
336  if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
337  if (*first_dtr)
338  vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
339  *first_dtr = post_dtr;
340  } else
341  vxge_hw_ring_rxd_post_post(ringh, post_dtr);
342  dtr_count++;
343  *dtr_cnt = dtr_count;
344 }
345 
346 /*
347  * vxge_rx_1b_compl
348  *
349  * If the interrupt is because of a received frame or if the receive ring
350  * contains fresh as yet un-processed frames, this function is called.
351  */
352 static enum vxge_hw_status
353 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
354  u8 t_code, void *userdata)
355 {
356  struct vxge_ring *ring = (struct vxge_ring *)userdata;
357  struct net_device *dev = ring->ndev;
358  unsigned int dma_sizes;
359  void *first_dtr = NULL;
360  int dtr_cnt = 0;
361  int data_size;
363  int pkt_length;
364  struct sk_buff *skb;
365  struct vxge_rx_priv *rx_priv;
366  struct vxge_hw_ring_rxd_info ext_info;
367  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
368  ring->ndev->name, __func__, __LINE__);
369 
370  do {
371  prefetch((char *)dtr + L1_CACHE_BYTES);
372  rx_priv = vxge_hw_ring_rxd_private_get(dtr);
373  skb = rx_priv->skb;
374  data_size = rx_priv->data_size;
375  data_dma = rx_priv->data_dma;
376  prefetch(rx_priv->skb_data);
377 
379  "%s: %s:%d skb = 0x%p",
380  ring->ndev->name, __func__, __LINE__, skb);
381 
382  vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
383  pkt_length = dma_sizes;
384 
385  pkt_length -= ETH_FCS_LEN;
386 
388  "%s: %s:%d Packet Length = %d",
389  ring->ndev->name, __func__, __LINE__, pkt_length);
390 
391  vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
392 
393  /* check skb validity */
394  vxge_assert(skb);
395 
396  prefetch((char *)skb + L1_CACHE_BYTES);
397  if (unlikely(t_code)) {
398  if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
399  VXGE_HW_OK) {
400 
401  ring->stats.rx_errors++;
403  "%s: %s :%d Rx T_code is %d",
404  ring->ndev->name, __func__,
405  __LINE__, t_code);
406 
407  /* If the t_code is not supported and if the
408  * t_code is other than 0x5 (unparseable packet
409  * such as unknown UPV6 header), Drop it !!!
410  */
411  vxge_re_pre_post(dtr, ring, rx_priv);
412 
413  vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
414  ring->stats.rx_dropped++;
415  continue;
416  }
417  }
418 
419  if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
420  if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
421  if (!vxge_rx_map(dtr, ring)) {
422  skb_put(skb, pkt_length);
423 
424  pci_unmap_single(ring->pdev, data_dma,
425  data_size, PCI_DMA_FROMDEVICE);
426 
427  vxge_hw_ring_rxd_pre_post(ringh, dtr);
428  vxge_post(&dtr_cnt, &first_dtr, dtr,
429  ringh);
430  } else {
431  dev_kfree_skb(rx_priv->skb);
432  rx_priv->skb = skb;
433  rx_priv->data_size = data_size;
434  vxge_re_pre_post(dtr, ring, rx_priv);
435 
436  vxge_post(&dtr_cnt, &first_dtr, dtr,
437  ringh);
438  ring->stats.rx_dropped++;
439  break;
440  }
441  } else {
442  vxge_re_pre_post(dtr, ring, rx_priv);
443 
444  vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
445  ring->stats.rx_dropped++;
446  break;
447  }
448  } else {
449  struct sk_buff *skb_up;
450 
451  skb_up = netdev_alloc_skb(dev, pkt_length +
453  if (skb_up != NULL) {
454  skb_reserve(skb_up,
456 
457  pci_dma_sync_single_for_cpu(ring->pdev,
458  data_dma, data_size,
460 
462  "%s: %s:%d skb_up = %p",
463  ring->ndev->name, __func__,
464  __LINE__, skb);
465  memcpy(skb_up->data, skb->data, pkt_length);
466 
467  vxge_re_pre_post(dtr, ring, rx_priv);
468 
469  vxge_post(&dtr_cnt, &first_dtr, dtr,
470  ringh);
471  /* will netif_rx small SKB instead */
472  skb = skb_up;
473  skb_put(skb, pkt_length);
474  } else {
475  vxge_re_pre_post(dtr, ring, rx_priv);
476 
477  vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
479  "%s: vxge_rx_1b_compl: out of "
480  "memory", dev->name);
481  ring->stats.skb_alloc_fail++;
482  break;
483  }
484  }
485 
486  if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
487  !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
488  (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
489  ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
490  ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
492  else
493  skb_checksum_none_assert(skb);
494 
495 
496  if (ring->rx_hwts) {
497  struct skb_shared_hwtstamps *skb_hwts;
498  u32 ns = *(u32 *)(skb->head + pkt_length);
499 
500  skb_hwts = skb_hwtstamps(skb);
501  skb_hwts->hwtstamp = ns_to_ktime(ns);
502  skb_hwts->syststamp.tv64 = 0;
503  }
504 
505  /* rth_hash_type and rth_it_hit are non-zero regardless of
506  * whether rss is enabled. Only the rth_value is zero/non-zero
507  * if rss is disabled/enabled, so key off of that.
508  */
509  if (ext_info.rth_value)
510  skb->rxhash = ext_info.rth_value;
511 
512  vxge_rx_complete(ring, skb, ext_info.vlan,
513  pkt_length, &ext_info);
514 
515  ring->budget--;
516  ring->pkts_processed++;
517  if (!ring->budget)
518  break;
519 
520  } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
521  &t_code) == VXGE_HW_OK);
522 
523  if (first_dtr)
524  vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
525 
527  "%s:%d Exiting...",
528  __func__, __LINE__);
529  return VXGE_HW_OK;
530 }
531 
532 /*
533  * vxge_xmit_compl
534  *
535  * If an interrupt was raised to indicate DMA complete of the Tx packet,
536  * this function is called. It identifies the last TxD whose buffer was
537  * freed and frees all skbs whose data have already DMA'ed into the NICs
538  * internal memory.
539  */
540 static enum vxge_hw_status
541 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
542  enum vxge_hw_fifo_tcode t_code, void *userdata,
543  struct sk_buff ***skb_ptr, int nr_skb, int *more)
544 {
545  struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
546  struct sk_buff *skb, **done_skb = *skb_ptr;
547  int pkt_cnt = 0;
548 
550  "%s:%d Entered....", __func__, __LINE__);
551 
552  do {
553  int frg_cnt;
554  skb_frag_t *frag;
555  int i = 0, j;
556  struct vxge_tx_priv *txd_priv =
557  vxge_hw_fifo_txdl_private_get(dtr);
558 
559  skb = txd_priv->skb;
560  frg_cnt = skb_shinfo(skb)->nr_frags;
561  frag = &skb_shinfo(skb)->frags[0];
562 
564  "%s: %s:%d fifo_hw = %p dtr = %p "
565  "tcode = 0x%x", fifo->ndev->name, __func__,
566  __LINE__, fifo_hw, dtr, t_code);
567  /* check skb validity */
568  vxge_assert(skb);
570  "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
571  fifo->ndev->name, __func__, __LINE__,
572  skb, txd_priv, frg_cnt);
573  if (unlikely(t_code)) {
574  fifo->stats.tx_errors++;
576  "%s: tx: dtr %p completed due to "
577  "error t_code %01x", fifo->ndev->name,
578  dtr, t_code);
579  vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
580  }
581 
582  /* for unfragmented skb */
583  pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
584  skb_headlen(skb), PCI_DMA_TODEVICE);
585 
586  for (j = 0; j < frg_cnt; j++) {
587  pci_unmap_page(fifo->pdev,
588  txd_priv->dma_buffers[i++],
589  skb_frag_size(frag), PCI_DMA_TODEVICE);
590  frag += 1;
591  }
592 
593  vxge_hw_fifo_txdl_free(fifo_hw, dtr);
594 
595  /* Updating the statistics block */
596  u64_stats_update_begin(&fifo->stats.syncp);
597  fifo->stats.tx_frms++;
598  fifo->stats.tx_bytes += skb->len;
599  u64_stats_update_end(&fifo->stats.syncp);
600 
601  *done_skb++ = skb;
602 
603  if (--nr_skb <= 0) {
604  *more = 1;
605  break;
606  }
607 
608  pkt_cnt++;
609  if (pkt_cnt > fifo->indicate_max_pkts)
610  break;
611 
612  } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
613  &dtr, &t_code) == VXGE_HW_OK);
614 
615  *skb_ptr = done_skb;
616  if (netif_tx_queue_stopped(fifo->txq))
617  netif_tx_wake_queue(fifo->txq);
618 
620  "%s: %s:%d Exiting...",
621  fifo->ndev->name, __func__, __LINE__);
622  return VXGE_HW_OK;
623 }
624 
625 /* select a vpath to transmit the packet */
626 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
627 {
628  u16 queue_len, counter = 0;
629  if (skb->protocol == htons(ETH_P_IP)) {
630  struct iphdr *ip;
631  struct tcphdr *th;
632 
633  ip = ip_hdr(skb);
634 
635  if (!ip_is_fragment(ip)) {
636  th = (struct tcphdr *)(((unsigned char *)ip) +
637  ip->ihl*4);
638 
639  queue_len = vdev->no_of_vpath;
640  counter = (ntohs(th->source) +
641  ntohs(th->dest)) &
642  vdev->vpath_selector[queue_len - 1];
643  if (counter >= queue_len)
644  counter = queue_len - 1;
645  }
646  }
647  return counter;
648 }
649 
650 static enum vxge_hw_status vxge_search_mac_addr_in_list(
651  struct vxge_vpath *vpath, u64 del_mac)
652 {
653  struct list_head *entry, *next;
654  list_for_each_safe(entry, next, &vpath->mac_addr_list) {
655  if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
656  return TRUE;
657  }
658  return FALSE;
659 }
660 
661 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
662 {
663  struct vxge_mac_addrs *new_mac_entry;
664  u8 *mac_address = NULL;
665 
667  return TRUE;
668 
669  new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
670  if (!new_mac_entry) {
672  "%s: memory allocation failed",
674  return FALSE;
675  }
676 
677  list_add(&new_mac_entry->item, &vpath->mac_addr_list);
678 
679  /* Copy the new mac address to the list */
680  mac_address = (u8 *)&new_mac_entry->macaddr;
681  memcpy(mac_address, mac->macaddr, ETH_ALEN);
682 
683  new_mac_entry->state = mac->state;
684  vpath->mac_addr_cnt++;
685 
686  if (is_multicast_ether_addr(mac->macaddr))
687  vpath->mcast_addr_cnt++;
688 
689  return TRUE;
690 }
691 
692 /* Add a mac address to DA table */
693 static enum vxge_hw_status
694 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
695 {
697  struct vxge_vpath *vpath;
698  enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
699 
700  if (is_multicast_ether_addr(mac->macaddr))
701  duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
702  else
704 
705  vpath = &vdev->vpaths[mac->vpath_no];
706  status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
707  mac->macmask, duplicate_mode);
708  if (status != VXGE_HW_OK) {
710  "DA config add entry failed for vpath:%d",
711  vpath->device_id);
712  } else
713  if (FALSE == vxge_mac_list_add(vpath, mac))
714  status = -EPERM;
715 
716  return status;
717 }
718 
719 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
720 {
721  struct macInfo mac_info;
722  u8 *mac_address = NULL;
723  u64 mac_addr = 0, vpath_vector = 0;
724  int vpath_idx = 0;
725  enum vxge_hw_status status = VXGE_HW_OK;
726  struct vxge_vpath *vpath = NULL;
727  struct __vxge_hw_device *hldev;
728 
729  hldev = pci_get_drvdata(vdev->pdev);
730 
731  mac_address = (u8 *)&mac_addr;
732  memcpy(mac_address, mac_header, ETH_ALEN);
733 
734  /* Is this mac address already in the list? */
735  for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
736  vpath = &vdev->vpaths[vpath_idx];
737  if (vxge_search_mac_addr_in_list(vpath, mac_addr))
738  return vpath_idx;
739  }
740 
741  memset(&mac_info, 0, sizeof(struct macInfo));
742  memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
743 
744  /* Any vpath has room to add mac address to its da table? */
745  for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
746  vpath = &vdev->vpaths[vpath_idx];
747  if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
748  /* Add this mac address to this vpath */
749  mac_info.vpath_no = vpath_idx;
751  status = vxge_add_mac_addr(vdev, &mac_info);
752  if (status != VXGE_HW_OK)
753  return -EPERM;
754  return vpath_idx;
755  }
756  }
757 
759  vpath_idx = 0;
760  mac_info.vpath_no = vpath_idx;
761  /* Is the first vpath already selected as catch-basin ? */
762  vpath = &vdev->vpaths[vpath_idx];
763  if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
764  /* Add this mac address to this vpath */
765  if (FALSE == vxge_mac_list_add(vpath, &mac_info))
766  return -EPERM;
767  return vpath_idx;
768  }
769 
770  /* Select first vpath as catch-basin */
771  vpath_vector = vxge_mBIT(vpath->device_id);
772  status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
774  0,
775  (ulong)offsetof(
776  struct vxge_hw_mrpcim_reg,
777  rts_mgr_cbasin_cfg),
778  vpath_vector);
779  if (status != VXGE_HW_OK) {
781  "%s: Unable to set the vpath-%d in catch-basin mode",
782  VXGE_DRIVER_NAME, vpath->device_id);
783  return -EPERM;
784  }
785 
786  if (FALSE == vxge_mac_list_add(vpath, &mac_info))
787  return -EPERM;
788 
789  return vpath_idx;
790 }
791 
800 static netdev_tx_t
801 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
802 {
803  struct vxge_fifo *fifo = NULL;
804  void *dtr_priv;
805  void *dtr = NULL;
806  struct vxgedev *vdev = NULL;
807  enum vxge_hw_status status;
808  int frg_cnt, first_frg_len;
809  skb_frag_t *frag;
810  int i = 0, j = 0, avail;
811  u64 dma_pointer;
812  struct vxge_tx_priv *txdl_priv = NULL;
813  struct __vxge_hw_fifo *fifo_hw;
814  int offload_type;
815  int vpath_no = 0;
816 
817  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
818  dev->name, __func__, __LINE__);
819 
820  /* A buffer with no data will be dropped */
821  if (unlikely(skb->len <= 0)) {
823  "%s: Buffer has no data..", dev->name);
824  dev_kfree_skb(skb);
825  return NETDEV_TX_OK;
826  }
827 
828  vdev = netdev_priv(dev);
829 
830  if (unlikely(!is_vxge_card_up(vdev))) {
832  "%s: vdev not initialized", dev->name);
833  dev_kfree_skb(skb);
834  return NETDEV_TX_OK;
835  }
836 
837  if (vdev->config.addr_learn_en) {
838  vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
839  if (vpath_no == -EPERM) {
841  "%s: Failed to store the mac address",
842  dev->name);
843  dev_kfree_skb(skb);
844  return NETDEV_TX_OK;
845  }
846  }
847 
848  if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
849  vpath_no = skb_get_queue_mapping(skb);
850  else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
851  vpath_no = vxge_get_vpath_no(vdev, skb);
852 
853  vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
854 
855  if (vpath_no >= vdev->no_of_vpath)
856  vpath_no = 0;
857 
858  fifo = &vdev->vpaths[vpath_no].fifo;
859  fifo_hw = fifo->handle;
860 
861  if (netif_tx_queue_stopped(fifo->txq))
862  return NETDEV_TX_BUSY;
863 
865  if (avail == 0) {
867  "%s: No free TXDs available", dev->name);
868  fifo->stats.txd_not_free++;
869  goto _exit0;
870  }
871 
872  /* Last TXD? Stop tx queue to avoid dropping packets. TX
873  * completion will resume the queue.
874  */
875  if (avail == 1)
876  netif_tx_stop_queue(fifo->txq);
877 
878  status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
879  if (unlikely(status != VXGE_HW_OK)) {
881  "%s: Out of descriptors .", dev->name);
882  fifo->stats.txd_out_of_desc++;
883  goto _exit0;
884  }
885 
887  "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
888  dev->name, __func__, __LINE__,
889  fifo_hw, dtr, dtr_priv);
890 
891  if (vlan_tx_tag_present(skb)) {
892  u16 vlan_tag = vlan_tx_tag_get(skb);
893  vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
894  }
895 
896  first_frg_len = skb_headlen(skb);
897 
898  dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
900 
901  if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
902  vxge_hw_fifo_txdl_free(fifo_hw, dtr);
903  fifo->stats.pci_map_fail++;
904  goto _exit0;
905  }
906 
907  txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
908  txdl_priv->skb = skb;
909  txdl_priv->dma_buffers[j] = dma_pointer;
910 
911  frg_cnt = skb_shinfo(skb)->nr_frags;
913  "%s: %s:%d skb = %p txdl_priv = %p "
914  "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
915  __func__, __LINE__, skb, txdl_priv,
916  frg_cnt, (unsigned long long)dma_pointer);
917 
918  vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
919  first_frg_len);
920 
921  frag = &skb_shinfo(skb)->frags[0];
922  for (i = 0; i < frg_cnt; i++) {
923  /* ignore 0 length fragment */
924  if (!skb_frag_size(frag))
925  continue;
926 
927  dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
928  0, skb_frag_size(frag),
929  DMA_TO_DEVICE);
930 
931  if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
932  goto _exit2;
934  "%s: %s:%d frag = %d dma_pointer = 0x%llx",
935  dev->name, __func__, __LINE__, i,
936  (unsigned long long)dma_pointer);
937 
938  txdl_priv->dma_buffers[j] = dma_pointer;
939  vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
940  skb_frag_size(frag));
941  frag += 1;
942  }
943 
944  offload_type = vxge_offload_type(skb);
945 
946  if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
947  int mss = vxge_tcp_mss(skb);
948  if (mss) {
949  vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
950  dev->name, __func__, __LINE__, mss);
951  vxge_hw_fifo_txdl_mss_set(dtr, mss);
952  } else {
953  vxge_assert(skb->len <=
955  vxge_assert(0);
956  goto _exit1;
957  }
958  }
959 
960  if (skb->ip_summed == CHECKSUM_PARTIAL)
961  vxge_hw_fifo_txdl_cksum_set_bits(dtr,
965 
966  vxge_hw_fifo_txdl_post(fifo_hw, dtr);
967 
968  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
969  dev->name, __func__, __LINE__);
970  return NETDEV_TX_OK;
971 
972 _exit2:
973  vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
974 _exit1:
975  j = 0;
976  frag = &skb_shinfo(skb)->frags[0];
977 
978  pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
979  skb_headlen(skb), PCI_DMA_TODEVICE);
980 
981  for (; j < i; j++) {
982  pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
983  skb_frag_size(frag), PCI_DMA_TODEVICE);
984  frag += 1;
985  }
986 
987  vxge_hw_fifo_txdl_free(fifo_hw, dtr);
988 _exit0:
989  netif_tx_stop_queue(fifo->txq);
990  dev_kfree_skb(skb);
991 
992  return NETDEV_TX_OK;
993 }
994 
995 /*
996  * vxge_rx_term
997  *
998  * Function will be called by hw function to abort all outstanding receive
999  * descriptors.
1000  */
1001 static void
1002 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1003 {
1004  struct vxge_ring *ring = (struct vxge_ring *)userdata;
1005  struct vxge_rx_priv *rx_priv =
1006  vxge_hw_ring_rxd_private_get(dtrh);
1007 
1008  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1009  ring->ndev->name, __func__, __LINE__);
1010  if (state != VXGE_HW_RXD_STATE_POSTED)
1011  return;
1012 
1013  pci_unmap_single(ring->pdev, rx_priv->data_dma,
1014  rx_priv->data_size, PCI_DMA_FROMDEVICE);
1015 
1016  dev_kfree_skb(rx_priv->skb);
1017  rx_priv->skb_data = NULL;
1018 
1020  "%s: %s:%d Exiting...",
1021  ring->ndev->name, __func__, __LINE__);
1022 }
1023 
1024 /*
1025  * vxge_tx_term
1026  *
1027  * Function will be called to abort all outstanding tx descriptors
1028  */
1029 static void
1030 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1031 {
1032  struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1033  skb_frag_t *frag;
1034  int i = 0, j, frg_cnt;
1035  struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1036  struct sk_buff *skb = txd_priv->skb;
1037 
1038  vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1039 
1040  if (state != VXGE_HW_TXDL_STATE_POSTED)
1041  return;
1042 
1043  /* check skb validity */
1044  vxge_assert(skb);
1045  frg_cnt = skb_shinfo(skb)->nr_frags;
1046  frag = &skb_shinfo(skb)->frags[0];
1047 
1048  /* for unfragmented skb */
1049  pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1050  skb_headlen(skb), PCI_DMA_TODEVICE);
1051 
1052  for (j = 0; j < frg_cnt; j++) {
1053  pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1054  skb_frag_size(frag), PCI_DMA_TODEVICE);
1055  frag += 1;
1056  }
1057 
1058  dev_kfree_skb(skb);
1059 
1061  "%s:%d Exiting...", __func__, __LINE__);
1062 }
1063 
1064 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1065 {
1066  struct list_head *entry, *next;
1067  u64 del_mac = 0;
1068  u8 *mac_address = (u8 *) (&del_mac);
1069 
1070  /* Copy the mac address to delete from the list */
1071  memcpy(mac_address, mac->macaddr, ETH_ALEN);
1072 
1073  list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1074  if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1075  list_del(entry);
1076  kfree((struct vxge_mac_addrs *)entry);
1077  vpath->mac_addr_cnt--;
1078 
1079  if (is_multicast_ether_addr(mac->macaddr))
1080  vpath->mcast_addr_cnt--;
1081  return TRUE;
1082  }
1083  }
1084 
1085  return FALSE;
1086 }
1087 
1088 /* delete a mac address from DA table */
1089 static enum vxge_hw_status
1090 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1091 {
1092  enum vxge_hw_status status = VXGE_HW_OK;
1093  struct vxge_vpath *vpath;
1094 
1095  vpath = &vdev->vpaths[mac->vpath_no];
1096  status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1097  mac->macmask);
1098  if (status != VXGE_HW_OK) {
1100  "DA config delete entry failed for vpath:%d",
1101  vpath->device_id);
1102  } else
1103  vxge_mac_list_del(vpath, mac);
1104  return status;
1105 }
1106 
1118 static void vxge_set_multicast(struct net_device *dev)
1119 {
1120  struct netdev_hw_addr *ha;
1121  struct vxgedev *vdev;
1122  int i, mcast_cnt = 0;
1123  struct __vxge_hw_device *hldev;
1124  struct vxge_vpath *vpath;
1125  enum vxge_hw_status status = VXGE_HW_OK;
1126  struct macInfo mac_info;
1127  int vpath_idx = 0;
1128  struct vxge_mac_addrs *mac_entry;
1129  struct list_head *list_head;
1130  struct list_head *entry, *next;
1131  u8 *mac_address = NULL;
1132 
1134  "%s:%d", __func__, __LINE__);
1135 
1136  vdev = netdev_priv(dev);
1137  hldev = vdev->devh;
1138 
1139  if (unlikely(!is_vxge_card_up(vdev)))
1140  return;
1141 
1142  if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1143  for (i = 0; i < vdev->no_of_vpath; i++) {
1144  vpath = &vdev->vpaths[i];
1145  vxge_assert(vpath->is_open);
1146  status = vxge_hw_vpath_mcast_enable(vpath->handle);
1147  if (status != VXGE_HW_OK)
1148  vxge_debug_init(VXGE_ERR, "failed to enable "
1149  "multicast, status %d", status);
1150  vdev->all_multi_flg = 1;
1151  }
1152  } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1153  for (i = 0; i < vdev->no_of_vpath; i++) {
1154  vpath = &vdev->vpaths[i];
1155  vxge_assert(vpath->is_open);
1156  status = vxge_hw_vpath_mcast_disable(vpath->handle);
1157  if (status != VXGE_HW_OK)
1158  vxge_debug_init(VXGE_ERR, "failed to disable "
1159  "multicast, status %d", status);
1160  vdev->all_multi_flg = 0;
1161  }
1162  }
1163 
1164 
1165  if (!vdev->config.addr_learn_en) {
1166  for (i = 0; i < vdev->no_of_vpath; i++) {
1167  vpath = &vdev->vpaths[i];
1168  vxge_assert(vpath->is_open);
1169 
1170  if (dev->flags & IFF_PROMISC)
1172  vpath->handle);
1173  else
1175  vpath->handle);
1176  if (status != VXGE_HW_OK)
1177  vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1178  ", status %d", dev->flags&IFF_PROMISC ?
1179  "enable" : "disable", status);
1180  }
1181  }
1182 
1183  memset(&mac_info, 0, sizeof(struct macInfo));
1184  /* Update individual M_CAST address list */
1185  if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1186  mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1187  list_head = &vdev->vpaths[0].mac_addr_list;
1188  if ((netdev_mc_count(dev) +
1189  (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1190  vdev->vpaths[0].max_mac_addr_cnt)
1191  goto _set_all_mcast;
1192 
1193  /* Delete previous MC's */
1194  for (i = 0; i < mcast_cnt; i++) {
1195  list_for_each_safe(entry, next, list_head) {
1196  mac_entry = (struct vxge_mac_addrs *)entry;
1197  /* Copy the mac address to delete */
1198  mac_address = (u8 *)&mac_entry->macaddr;
1199  memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1200 
1201  if (is_multicast_ether_addr(mac_info.macaddr)) {
1202  for (vpath_idx = 0; vpath_idx <
1203  vdev->no_of_vpath;
1204  vpath_idx++) {
1205  mac_info.vpath_no = vpath_idx;
1206  status = vxge_del_mac_addr(
1207  vdev,
1208  &mac_info);
1209  }
1210  }
1211  }
1212  }
1213 
1214  /* Add new ones */
1215  netdev_for_each_mc_addr(ha, dev) {
1216  memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1217  for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1218  vpath_idx++) {
1219  mac_info.vpath_no = vpath_idx;
1221  status = vxge_add_mac_addr(vdev, &mac_info);
1222  if (status != VXGE_HW_OK) {
1224  "%s:%d Setting individual"
1225  "multicast address failed",
1226  __func__, __LINE__);
1227  goto _set_all_mcast;
1228  }
1229  }
1230  }
1231 
1232  return;
1233 _set_all_mcast:
1234  mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1235  /* Delete previous MC's */
1236  for (i = 0; i < mcast_cnt; i++) {
1237  list_for_each_safe(entry, next, list_head) {
1238  mac_entry = (struct vxge_mac_addrs *)entry;
1239  /* Copy the mac address to delete */
1240  mac_address = (u8 *)&mac_entry->macaddr;
1241  memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1242 
1243  if (is_multicast_ether_addr(mac_info.macaddr))
1244  break;
1245  }
1246 
1247  for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1248  vpath_idx++) {
1249  mac_info.vpath_no = vpath_idx;
1250  status = vxge_del_mac_addr(vdev, &mac_info);
1251  }
1252  }
1253 
1254  /* Enable all multicast */
1255  for (i = 0; i < vdev->no_of_vpath; i++) {
1256  vpath = &vdev->vpaths[i];
1257  vxge_assert(vpath->is_open);
1258 
1259  status = vxge_hw_vpath_mcast_enable(vpath->handle);
1260  if (status != VXGE_HW_OK) {
1262  "%s:%d Enabling all multicasts failed",
1263  __func__, __LINE__);
1264  }
1265  vdev->all_multi_flg = 1;
1266  }
1267  dev->flags |= IFF_ALLMULTI;
1268  }
1269 
1271  "%s:%d Exiting...", __func__, __LINE__);
1272 }
1273 
1280 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1281 {
1282  struct sockaddr *addr = p;
1283  struct vxgedev *vdev;
1284  struct __vxge_hw_device *hldev;
1285  enum vxge_hw_status status = VXGE_HW_OK;
1286  struct macInfo mac_info_new, mac_info_old;
1287  int vpath_idx = 0;
1288 
1289  vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1290 
1291  vdev = netdev_priv(dev);
1292  hldev = vdev->devh;
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 */
1356 static 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 
1364 
1365  if (vdev->config.intr_type == INTA)
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 */
1389 static 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 
1398 
1400 
1401  if (vdev->config.intr_type == INTA)
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 *
1411  vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1412  }
1413 }
1414 
1415 /* list all mac addresses from DA table */
1416 static enum vxge_hw_status
1417 vxge_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) {
1427  "DA config list entry failed for vpath:%d",
1428  vpath->device_id);
1429  return status;
1430  }
1431 
1432  while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
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 */
1443 static 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 =
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,
1469  if (status != VXGE_HW_OK) {
1471  "DA add entry failed for vpath:%d",
1472  vpath->device_id);
1473  ((struct vxge_mac_addrs *)entry)->state
1475  }
1476  }
1477  }
1478  }
1479 
1480  return status;
1481 }
1482 
1483 /* Store all vlan ids from the list to the vid table */
1484 static enum vxge_hw_status
1485 vxge_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 
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 */
1507 static 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) &&
1525  != VXGE_HW_OK) {
1527  "vxge_hw_vpath_recover_from_reset"
1528  "failed for vpath:%d", vp_id);
1529  return status;
1530  }
1531  } else {
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 */
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)
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();
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 */
1578 static 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;
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 
1607 static 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 */
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)) {
1638  "%s: execution mode is debug, returning..",
1639  vdev->ndev->name);
1641  netif_tx_stop_all_queues(vdev->ndev);
1642  return 0;
1643  }
1644  }
1645 
1646  if (event == VXGE_LL_FULL_RESET) {
1649 
1650  switch (vdev->cric_err_event) {
1651  case VXGE_HW_EVENT_UNKNOWN:
1652  netif_tx_stop_all_queues(vdev->ndev);
1654  "fatal: %s: Disabling device due to"
1655  "unknown error",
1656  vdev->ndev->name);
1657  ret = -EPERM;
1658  goto out;
1660  break;
1663  case VXGE_HW_EVENT_LINK_UP:
1665  case VXGE_HW_EVENT_ECCERR:
1667  ret = -EPERM;
1668  goto out;
1671  break;
1673  netif_tx_stop_all_queues(vdev->ndev);
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);
1685  "fatal: %s: Disabling device due to"
1686  "serious error",
1687  vdev->ndev->name);
1688  ret = -EPERM;
1689  goto out;
1692  ret = -EPERM;
1693  goto out;
1695  netif_tx_stop_all_queues(vdev->ndev);
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) {
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) {
1726  vdev->vpaths[i].handle)
1727  != VXGE_HW_OK) {
1729  "vxge_hw_vpath_recover_"
1730  "from_reset failed for vpath: "
1731  "%d", i);
1732  ret = -EPERM;
1733  goto out;
1734  }
1735  } else {
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 
1756 
1757  smp_wmb();
1758 
1759  /* Indicate card up */
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 
1775 out:
1777  "%s:%d Exiting...", __func__, __LINE__);
1778 
1779  /* Indicate reset done */
1780  if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
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  */
1791 static 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 
1813 static 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;
1822  pkts_processed = ring->pkts_processed;
1823 
1824  if (ring->pkts_processed < budget_org) {
1825  napi_complete(napi);
1826 
1827  /* Re enable the Rx interrupts for the vpath */
1829  (struct __vxge_hw_channel *)ring->handle,
1830  ring->rx_vector_no);
1831  mmiowb();
1832  }
1833 
1834  /* We are copying and returning the local variable, in case if after
1835  * clearing the msix interrupt above, if the interrupt fires right
1836  * away which can preempt this NAPI thread */
1837  return pkts_processed;
1838 }
1839 
1840 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1841 {
1842  struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1843  int pkts_processed = 0;
1844  int i;
1845  int budget_org = budget;
1846  struct vxge_ring *ring;
1847 
1848  struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1849 
1850  for (i = 0; i < vdev->no_of_vpath; i++) {
1851  ring = &vdev->vpaths[i].ring;
1852  ring->budget = budget;
1853  ring->pkts_processed = 0;
1855  pkts_processed += ring->pkts_processed;
1856  budget -= ring->pkts_processed;
1857  if (budget <= 0)
1858  break;
1859  }
1860 
1861  VXGE_COMPLETE_ALL_TX(vdev);
1862 
1863  if (pkts_processed < budget_org) {
1864  napi_complete(napi);
1865  /* Re enable the Rx interrupts for the ring */
1867  vxge_hw_device_flush_io(hldev);
1868  }
1869 
1870  return pkts_processed;
1871 }
1872 
1873 #ifdef CONFIG_NET_POLL_CONTROLLER
1874 
1883 static void vxge_netpoll(struct net_device *dev)
1884 {
1885  struct vxgedev *vdev = netdev_priv(dev);
1886  struct pci_dev *pdev = vdev->pdev;
1887  struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1888  const int irq = pdev->irq;
1889 
1890  vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1891 
1892  if (pci_channel_offline(pdev))
1893  return;
1894 
1895  disable_irq(irq);
1897 
1899  VXGE_COMPLETE_ALL_RX(vdev);
1900  VXGE_COMPLETE_ALL_TX(vdev);
1901 
1902  enable_irq(irq);
1903 
1905  "%s:%d Exiting...", __func__, __LINE__);
1906 }
1907 #endif
1908 
1909 /* RTH configuration */
1910 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1911 {
1912  enum vxge_hw_status status = VXGE_HW_OK;
1913  struct vxge_hw_rth_hash_types hash_types;
1914  u8 itable[256] = {0}; /* indirection table */
1915  u8 mtable[256] = {0}; /* CPU to vpath mapping */
1916  int index;
1917 
1918  /*
1919  * Filling
1920  * - itable with bucket numbers
1921  * - mtable with bucket-to-vpath mapping
1922  */
1923  for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1924  itable[index] = index;
1925  mtable[index] = index % vdev->no_of_vpath;
1926  }
1927 
1928  /* set indirection table, bucket-to-vpath mapping */
1930  vdev->no_of_vpath,
1931  mtable, itable,
1932  vdev->config.rth_bkt_sz);
1933  if (status != VXGE_HW_OK) {
1935  "RTH indirection table configuration failed "
1936  "for vpath:%d", vdev->vpaths[0].device_id);
1937  return status;
1938  }
1939 
1940  /* Fill RTH hash types */
1941  hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4;
1942  hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4;
1943  hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6;
1944  hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6;
1945  hash_types.hash_type_tcpipv6ex_en =
1946  vdev->config.rth_hash_type_tcpipv6ex;
1947  hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex;
1948 
1949  /*
1950  * Because the itable_set() method uses the active_table field
1951  * for the target virtual path the RTH config should be updated
1952  * for all VPATHs. The h/w only uses the lowest numbered VPATH
1953  * when steering frames.
1954  */
1955  for (index = 0; index < vdev->no_of_vpath; index++) {
1956  status = vxge_hw_vpath_rts_rth_set(
1957  vdev->vpaths[index].handle,
1958  vdev->config.rth_algorithm,
1959  &hash_types,
1960  vdev->config.rth_bkt_sz);
1961  if (status != VXGE_HW_OK) {
1963  "RTH configuration failed for vpath:%d",
1964  vdev->vpaths[index].device_id);
1965  return status;
1966  }
1967  }
1968 
1969  return status;
1970 }
1971 
1972 /* reset vpaths */
1974 {
1975  enum vxge_hw_status status = VXGE_HW_OK;
1976  struct vxge_vpath *vpath;
1977  int i;
1978 
1979  for (i = 0; i < vdev->no_of_vpath; i++) {
1980  vpath = &vdev->vpaths[i];
1981  if (vpath->handle) {
1982  if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1983  if (is_vxge_card_up(vdev) &&
1985  vpath->handle) != VXGE_HW_OK) {
1987  "vxge_hw_vpath_recover_"
1988  "from_reset failed for vpath: "
1989  "%d", i);
1990  return status;
1991  }
1992  } else {
1994  "vxge_hw_vpath_reset failed for "
1995  "vpath:%d", i);
1996  return status;
1997  }
1998  }
1999  }
2000 
2001  return status;
2002 }
2003 
2004 /* close vpaths */
2005 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2006 {
2007  struct vxge_vpath *vpath;
2008  int i;
2009 
2010  for (i = index; i < vdev->no_of_vpath; i++) {
2011  vpath = &vdev->vpaths[i];
2012 
2013  if (vpath->handle && vpath->is_open) {
2014  vxge_hw_vpath_close(vpath->handle);
2015  vdev->stats.vpaths_open--;
2016  }
2017  vpath->is_open = 0;
2018  vpath->handle = NULL;
2019  }
2020 }
2021 
2022 /* open vpaths */
2023 static int vxge_open_vpaths(struct vxgedev *vdev)
2024 {
2025  struct vxge_hw_vpath_attr attr;
2026  enum vxge_hw_status status;
2027  struct vxge_vpath *vpath;
2028  u32 vp_id = 0;
2029  int i;
2030 
2031  for (i = 0; i < vdev->no_of_vpath; i++) {
2032  vpath = &vdev->vpaths[i];
2033  vxge_assert(vpath->is_configured);
2034 
2035  if (!vdev->titan1) {
2036  struct vxge_hw_vp_config *vcfg;
2037  vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2038 
2039  vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2040  vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2041  vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2042  vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2043  vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2044  vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2045  vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2046  vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2047  vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2048  }
2049 
2050  attr.vp_id = vpath->device_id;
2051  attr.fifo_attr.callback = vxge_xmit_compl;
2052  attr.fifo_attr.txdl_term = vxge_tx_term;
2053  attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2054  attr.fifo_attr.userdata = &vpath->fifo;
2055 
2056  attr.ring_attr.callback = vxge_rx_1b_compl;
2057  attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2058  attr.ring_attr.rxd_term = vxge_rx_term;
2059  attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2060  attr.ring_attr.userdata = &vpath->ring;
2061 
2062  vpath->ring.ndev = vdev->ndev;
2063  vpath->ring.pdev = vdev->pdev;
2064 
2065  status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2066  if (status == VXGE_HW_OK) {
2067  vpath->fifo.handle =
2068  (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2069  vpath->ring.handle =
2070  (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2071  vpath->fifo.tx_steering_type =
2072  vdev->config.tx_steering_type;
2073  vpath->fifo.ndev = vdev->ndev;
2074  vpath->fifo.pdev = vdev->pdev;
2075  if (vdev->config.tx_steering_type)
2076  vpath->fifo.txq =
2077  netdev_get_tx_queue(vdev->ndev, i);
2078  else
2079  vpath->fifo.txq =
2080  netdev_get_tx_queue(vdev->ndev, 0);
2081  vpath->fifo.indicate_max_pkts =
2082  vdev->config.fifo_indicate_max_pkts;
2083  vpath->fifo.tx_vector_no = 0;
2084  vpath->ring.rx_vector_no = 0;
2085  vpath->ring.rx_hwts = vdev->rx_hwts;
2086  vpath->is_open = 1;
2087  vdev->vp_handles[i] = vpath->handle;
2088  vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2089  vdev->stats.vpaths_open++;
2090  } else {
2091  vdev->stats.vpath_open_fail++;
2092  vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2093  "open with status: %d",
2094  vdev->ndev->name, vpath->device_id,
2095  status);
2096  vxge_close_vpaths(vdev, 0);
2097  return -EPERM;
2098  }
2099 
2100  vp_id = vpath->handle->vpath->vp_id;
2101  vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2102  }
2103 
2104  return VXGE_HW_OK;
2105 }
2106 
2115 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2116 {
2117  fifo->interrupt_count++;
2118  if (jiffies > fifo->jiffies + HZ / 100) {
2119  struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2120 
2121  fifo->jiffies = jiffies;
2123  hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2124  hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2126  } else if (hw_fifo->rtimer != 0) {
2127  hw_fifo->rtimer = 0;
2129  }
2130  fifo->interrupt_count = 0;
2131  }
2132 }
2133 
2143 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2144 {
2145  ring->interrupt_count++;
2146  if (jiffies > ring->jiffies + HZ / 100) {
2147  struct __vxge_hw_ring *hw_ring = ring->handle;
2148 
2149  ring->jiffies = jiffies;
2151  hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2152  hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2154  } else if (hw_ring->rtimer != 0) {
2155  hw_ring->rtimer = 0;
2157  }
2158  ring->interrupt_count = 0;
2159  }
2160 }
2161 
2162 /*
2163  * vxge_isr_napi
2164  * @irq: the irq of the device.
2165  * @dev_id: a void pointer to the hldev structure of the Titan device
2166  * @ptregs: pointer to the registers pushed on the stack.
2167  *
2168  * This function is the ISR handler of the device when napi is enabled. It
2169  * identifies the reason for the interrupt and calls the relevant service
2170  * routines.
2171  */
2172 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2173 {
2174  struct net_device *dev;
2175  struct __vxge_hw_device *hldev;
2176  u64 reason;
2177  enum vxge_hw_status status;
2178  struct vxgedev *vdev = (struct vxgedev *)dev_id;
2179 
2180  vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2181 
2182  dev = vdev->ndev;
2183  hldev = pci_get_drvdata(vdev->pdev);
2184 
2185  if (pci_channel_offline(vdev->pdev))
2186  return IRQ_NONE;
2187 
2188  if (unlikely(!is_vxge_card_up(vdev)))
2189  return IRQ_HANDLED;
2190 
2191  status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2192  if (status == VXGE_HW_OK) {
2193  vxge_hw_device_mask_all(hldev);
2194 
2195  if (reason &
2197  vdev->vpaths_deployed >>
2198  (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2199 
2201  napi_schedule(&vdev->napi);
2203  "%s:%d Exiting...", __func__, __LINE__);
2204  return IRQ_HANDLED;
2205  } else
2207  } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2208  (status == VXGE_HW_ERR_CRITICAL) ||
2209  (status == VXGE_HW_ERR_FIFO))) {
2210  vxge_hw_device_mask_all(hldev);
2211  vxge_hw_device_flush_io(hldev);
2212  return IRQ_HANDLED;
2213  } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2214  return IRQ_HANDLED;
2215 
2216  vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__);
2217  return IRQ_NONE;
2218 }
2219 
2220 #ifdef CONFIG_PCI_MSI
2221 
2222 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2223 {
2224  struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2225 
2226  adaptive_coalesce_tx_interrupts(fifo);
2227 
2229  fifo->tx_vector_no);
2230 
2232  fifo->tx_vector_no);
2233 
2234  VXGE_COMPLETE_VPATH_TX(fifo);
2235 
2237  fifo->tx_vector_no);
2238 
2239  mmiowb();
2240 
2241  return IRQ_HANDLED;
2242 }
2243 
2244 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2245 {
2246  struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2247 
2248  adaptive_coalesce_rx_interrupts(ring);
2249 
2251  ring->rx_vector_no);
2252 
2254  ring->rx_vector_no);
2255 
2256  napi_schedule(&ring->napi);
2257  return IRQ_HANDLED;
2258 }
2259 
2260 static irqreturn_t
2261 vxge_alarm_msix_handle(int irq, void *dev_id)
2262 {
2263  int i;
2264  enum vxge_hw_status status;
2265  struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2266  struct vxgedev *vdev = vpath->vdev;
2267  int msix_id = (vpath->handle->vpath->vp_id *
2269 
2270  for (i = 0; i < vdev->no_of_vpath; i++) {
2271  /* Reduce the chance of losing alarm interrupts by masking
2272  * the vector. A pending bit will be set if an alarm is
2273  * generated and on unmask the interrupt will be fired.
2274  */
2275  vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2276  vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2277  mmiowb();
2278 
2279  status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2280  vdev->exec_mode);
2281  if (status == VXGE_HW_OK) {
2282  vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2283  msix_id);
2284  mmiowb();
2285  continue;
2286  }
2288  "%s: vxge_hw_vpath_alarm_process failed %x ",
2289  VXGE_DRIVER_NAME, status);
2290  }
2291  return IRQ_HANDLED;
2292 }
2293 
2294 static int vxge_alloc_msix(struct vxgedev *vdev)
2295 {
2296  int j, i, ret = 0;
2297  int msix_intr_vect = 0, temp;
2298  vdev->intr_cnt = 0;
2299 
2300 start:
2301  /* Tx/Rx MSIX Vectors count */
2302  vdev->intr_cnt = vdev->no_of_vpath * 2;
2303 
2304  /* Alarm MSIX Vectors count */
2305  vdev->intr_cnt++;
2306 
2307  vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2308  GFP_KERNEL);
2309  if (!vdev->entries) {
2311  "%s: memory allocation failed",
2313  ret = -ENOMEM;
2314  goto alloc_entries_failed;
2315  }
2316 
2317  vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2318  sizeof(struct vxge_msix_entry),
2319  GFP_KERNEL);
2320  if (!vdev->vxge_entries) {
2321  vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2323  ret = -ENOMEM;
2324  goto alloc_vxge_entries_failed;
2325  }
2326 
2327  for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2328 
2329  msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2330 
2331  /* Initialize the fifo vector */
2332  vdev->entries[j].entry = msix_intr_vect;
2333  vdev->vxge_entries[j].entry = msix_intr_vect;
2334  vdev->vxge_entries[j].in_use = 0;
2335  j++;
2336 
2337  /* Initialize the ring vector */
2338  vdev->entries[j].entry = msix_intr_vect + 1;
2339  vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2340  vdev->vxge_entries[j].in_use = 0;
2341  j++;
2342  }
2343 
2344  /* Initialize the alarm vector */
2345  vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2346  vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2347  vdev->vxge_entries[j].in_use = 0;
2348 
2349  ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2350  if (ret > 0) {
2352  "%s: MSI-X enable failed for %d vectors, ret: %d",
2353  VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2354  if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2355  ret = -ENODEV;
2356  goto enable_msix_failed;
2357  }
2358 
2359  kfree(vdev->entries);
2360  kfree(vdev->vxge_entries);
2361  vdev->entries = NULL;
2362  vdev->vxge_entries = NULL;
2363  /* Try with less no of vector by reducing no of vpaths count */
2364  temp = (ret - 1)/2;
2365  vxge_close_vpaths(vdev, temp);
2366  vdev->no_of_vpath = temp;
2367  goto start;
2368  } else if (ret < 0) {
2369  ret = -ENODEV;
2370  goto enable_msix_failed;
2371  }
2372  return 0;
2373 
2374 enable_msix_failed:
2375  kfree(vdev->vxge_entries);
2376 alloc_vxge_entries_failed:
2377  kfree(vdev->entries);
2378 alloc_entries_failed:
2379  return ret;
2380 }
2381 
2382 static int vxge_enable_msix(struct vxgedev *vdev)
2383 {
2384 
2385  int i, ret = 0;
2386  /* 0 - Tx, 1 - Rx */
2387  int tim_msix_id[4] = {0, 1, 0, 0};
2388 
2389  vdev->intr_cnt = 0;
2390 
2391  /* allocate msix vectors */
2392  ret = vxge_alloc_msix(vdev);
2393  if (!ret) {
2394  for (i = 0; i < vdev->no_of_vpath; i++) {
2395  struct vxge_vpath *vpath = &vdev->vpaths[i];
2396 
2397  /* If fifo or ring are not enabled, the MSIX vector for
2398  * it should be set to 0.
2399  */
2400  vpath->ring.rx_vector_no = (vpath->device_id *
2402 
2403  vpath->fifo.tx_vector_no = (vpath->device_id *
2405 
2406  vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2408  }
2409  }
2410 
2411  return ret;
2412 }
2413 
2414 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2415 {
2416  int intr_cnt;
2417 
2418  for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2419  intr_cnt++) {
2420  if (vdev->vxge_entries[intr_cnt].in_use) {
2421  synchronize_irq(vdev->entries[intr_cnt].vector);
2422  free_irq(vdev->entries[intr_cnt].vector,
2423  vdev->vxge_entries[intr_cnt].arg);
2424  vdev->vxge_entries[intr_cnt].in_use = 0;
2425  }
2426  }
2427 
2428  kfree(vdev->entries);
2429  kfree(vdev->vxge_entries);
2430  vdev->entries = NULL;
2431  vdev->vxge_entries = NULL;
2432 
2433  if (vdev->config.intr_type == MSI_X)
2434  pci_disable_msix(vdev->pdev);
2435 }
2436 #endif
2437 
2438 static void vxge_rem_isr(struct vxgedev *vdev)
2439 {
2440  struct __vxge_hw_device *hldev;
2441  hldev = pci_get_drvdata(vdev->pdev);
2442 
2443 #ifdef CONFIG_PCI_MSI
2444  if (vdev->config.intr_type == MSI_X) {
2445  vxge_rem_msix_isr(vdev);
2446  } else
2447 #endif
2448  if (vdev->config.intr_type == INTA) {
2449  synchronize_irq(vdev->pdev->irq);
2450  free_irq(vdev->pdev->irq, vdev);
2451  }
2452 }
2453 
2454 static int vxge_add_isr(struct vxgedev *vdev)
2455 {
2456  int ret = 0;
2457 #ifdef CONFIG_PCI_MSI
2458  int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2459  int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2460 
2461  if (vdev->config.intr_type == MSI_X)
2462  ret = vxge_enable_msix(vdev);
2463 
2464  if (ret) {
2466  "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2468  "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2469  vdev->config.intr_type = INTA;
2470  }
2471 
2472  if (vdev->config.intr_type == MSI_X) {
2473  for (intr_idx = 0;
2474  intr_idx < (vdev->no_of_vpath *
2475  VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2476 
2477  msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2478  irq_req = 0;
2479 
2480  switch (msix_idx) {
2481  case 0:
2482  snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2483  "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2484  vdev->ndev->name,
2485  vdev->entries[intr_cnt].entry,
2486  pci_fun, vp_idx);
2487  ret = request_irq(
2488  vdev->entries[intr_cnt].vector,
2489  vxge_tx_msix_handle, 0,
2490  vdev->desc[intr_cnt],
2491  &vdev->vpaths[vp_idx].fifo);
2492  vdev->vxge_entries[intr_cnt].arg =
2493  &vdev->vpaths[vp_idx].fifo;
2494  irq_req = 1;
2495  break;
2496  case 1:
2497  snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2498  "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2499  vdev->ndev->name,
2500  vdev->entries[intr_cnt].entry,
2501  pci_fun, vp_idx);
2502  ret = request_irq(
2503  vdev->entries[intr_cnt].vector,
2504  vxge_rx_msix_napi_handle,
2505  0,
2506  vdev->desc[intr_cnt],
2507  &vdev->vpaths[vp_idx].ring);
2508  vdev->vxge_entries[intr_cnt].arg =
2509  &vdev->vpaths[vp_idx].ring;
2510  irq_req = 1;
2511  break;
2512  }
2513 
2514  if (ret) {
2516  "%s: MSIX - %d Registration failed",
2517  vdev->ndev->name, intr_cnt);
2518  vxge_rem_msix_isr(vdev);
2519  vdev->config.intr_type = INTA;
2521  "%s: Defaulting to INTA"
2522  , vdev->ndev->name);
2523  goto INTA_MODE;
2524  }
2525 
2526  if (irq_req) {
2527  /* We requested for this msix interrupt */
2528  vdev->vxge_entries[intr_cnt].in_use = 1;
2529  msix_idx += vdev->vpaths[vp_idx].device_id *
2532  vdev->vpaths[vp_idx].handle,
2533  msix_idx);
2534  intr_cnt++;
2535  }
2536 
2537  /* Point to next vpath handler */
2538  if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2539  (vp_idx < (vdev->no_of_vpath - 1)))
2540  vp_idx++;
2541  }
2542 
2543  intr_cnt = vdev->no_of_vpath * 2;
2544  snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2545  "%s:vxge:MSI-X %d - Alarm - fn:%d",
2546  vdev->ndev->name,
2547  vdev->entries[intr_cnt].entry,
2548  pci_fun);
2549  /* For Alarm interrupts */
2550  ret = request_irq(vdev->entries[intr_cnt].vector,
2551  vxge_alarm_msix_handle, 0,
2552  vdev->desc[intr_cnt],
2553  &vdev->vpaths[0]);
2554  if (ret) {
2556  "%s: MSIX - %d Registration failed",
2557  vdev->ndev->name, intr_cnt);
2558  vxge_rem_msix_isr(vdev);
2559  vdev->config.intr_type = INTA;
2561  "%s: Defaulting to INTA",
2562  vdev->ndev->name);
2563  goto INTA_MODE;
2564  }
2565 
2566  msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2568  vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2569  msix_idx);
2570  vdev->vxge_entries[intr_cnt].in_use = 1;
2571  vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2572  }
2573 INTA_MODE:
2574 #endif
2575 
2576  if (vdev->config.intr_type == INTA) {
2577  snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2578  "%s:vxge:INTA", vdev->ndev->name);
2581 
2582  vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2583 
2584  ret = request_irq((int) vdev->pdev->irq,
2585  vxge_isr_napi,
2586  IRQF_SHARED, vdev->desc[0], vdev);
2587  if (ret) {
2589  "%s %s-%d: ISR registration failed",
2590  VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2591  return -ENODEV;
2592  }
2594  "new %s-%d line allocated",
2595  "IRQ", vdev->pdev->irq);
2596  }
2597 
2598  return VXGE_HW_OK;
2599 }
2600 
2601 static void vxge_poll_vp_reset(unsigned long data)
2602 {
2603  struct vxgedev *vdev = (struct vxgedev *)data;
2604  int i, j = 0;
2605 
2606  for (i = 0; i < vdev->no_of_vpath; i++) {
2607  if (test_bit(i, &vdev->vp_reset)) {
2608  vxge_reset_vpath(vdev, i);
2609  j++;
2610  }
2611  }
2612  if (j && (vdev->config.intr_type != MSI_X)) {
2615  }
2616 
2617  mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2618 }
2619 
2620 static void vxge_poll_vp_lockup(unsigned long data)
2621 {
2622  struct vxgedev *vdev = (struct vxgedev *)data;
2623  enum vxge_hw_status status = VXGE_HW_OK;
2624  struct vxge_vpath *vpath;
2625  struct vxge_ring *ring;
2626  int i;
2627  unsigned long rx_frms;
2628 
2629  for (i = 0; i < vdev->no_of_vpath; i++) {
2630  ring = &vdev->vpaths[i].ring;
2631 
2632  /* Truncated to machine word size number of frames */
2633  rx_frms = ACCESS_ONCE(ring->stats.rx_frms);
2634 
2635  /* Did this vpath received any packets */
2636  if (ring->stats.prev_rx_frms == rx_frms) {
2637  status = vxge_hw_vpath_check_leak(ring->handle);
2638 
2639  /* Did it received any packets last time */
2640  if ((VXGE_HW_FAIL == status) &&
2641  (VXGE_HW_FAIL == ring->last_status)) {
2642 
2643  /* schedule vpath reset */
2644  if (!test_and_set_bit(i, &vdev->vp_reset)) {
2645  vpath = &vdev->vpaths[i];
2646 
2647  /* disable interrupts for this vpath */
2648  vxge_vpath_intr_disable(vdev, i);
2649 
2650  /* stop the queue for this vpath */
2651  netif_tx_stop_queue(vpath->fifo.txq);
2652  continue;
2653  }
2654  }
2655  }
2656  ring->stats.prev_rx_frms = rx_frms;
2657  ring->last_status = status;
2658  }
2659 
2660  /* Check every 1 milli second */
2661  mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2662 }
2663 
2664 static netdev_features_t vxge_fix_features(struct net_device *dev,
2666 {
2668 
2669  /* Enabling RTH requires some of the logic in vxge_device_register and a
2670  * vpath reset. Due to these restrictions, only allow modification
2671  * while the interface is down.
2672  */
2673  if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2674  features ^= NETIF_F_RXHASH;
2675 
2676  return features;
2677 }
2678 
2679 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2680 {
2681  struct vxgedev *vdev = netdev_priv(dev);
2682  netdev_features_t changed = dev->features ^ features;
2683 
2684  if (!(changed & NETIF_F_RXHASH))
2685  return 0;
2686 
2687  /* !netif_running() ensured by vxge_fix_features() */
2688 
2689  vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2690  if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2691  dev->features = features ^ NETIF_F_RXHASH;
2692  vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2693  return -EIO;
2694  }
2695 
2696  return 0;
2697 }
2698 
2709 static int vxge_open(struct net_device *dev)
2710 {
2711  enum vxge_hw_status status;
2712  struct vxgedev *vdev;
2713  struct __vxge_hw_device *hldev;
2714  struct vxge_vpath *vpath;
2715  int ret = 0;
2716  int i;
2717  u64 val64, function_mode;
2718 
2720  "%s: %s:%d", dev->name, __func__, __LINE__);
2721 
2722  vdev = netdev_priv(dev);
2723  hldev = pci_get_drvdata(vdev->pdev);
2724  function_mode = vdev->config.device_hw_info.function_mode;
2725 
2726  /* make sure you have link off by default every time Nic is
2727  * initialized */
2728  netif_carrier_off(dev);
2729 
2730  /* Open VPATHs */
2731  status = vxge_open_vpaths(vdev);
2732  if (status != VXGE_HW_OK) {
2734  "%s: fatal: Vpath open failed", vdev->ndev->name);
2735  ret = -EPERM;
2736  goto out0;
2737  }
2738 
2739  vdev->mtu = dev->mtu;
2740 
2741  status = vxge_add_isr(vdev);
2742  if (status != VXGE_HW_OK) {
2744  "%s: fatal: ISR add failed", dev->name);
2745  ret = -EPERM;
2746  goto out1;
2747  }
2748 
2749  if (vdev->config.intr_type != MSI_X) {
2750  netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2751  vdev->config.napi_weight);
2752  napi_enable(&vdev->napi);
2753  for (i = 0; i < vdev->no_of_vpath; i++) {
2754  vpath = &vdev->vpaths[i];
2755  vpath->ring.napi_p = &vdev->napi;
2756  }
2757  } else {
2758  for (i = 0; i < vdev->no_of_vpath; i++) {
2759  vpath = &vdev->vpaths[i];
2760  netif_napi_add(dev, &vpath->ring.napi,
2761  vxge_poll_msix, vdev->config.napi_weight);
2762  napi_enable(&vpath->ring.napi);
2763  vpath->ring.napi_p = &vpath->ring.napi;
2764  }
2765  }
2766 
2767  /* configure RTH */
2768  if (vdev->config.rth_steering) {
2769  status = vxge_rth_configure(vdev);
2770  if (status != VXGE_HW_OK) {
2772  "%s: fatal: RTH configuration failed",
2773  dev->name);
2774  ret = -EPERM;
2775  goto out2;
2776  }
2777  }
2778  printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2779  hldev->config.rth_en ? "enabled" : "disabled");
2780 
2781  for (i = 0; i < vdev->no_of_vpath; i++) {
2782  vpath = &vdev->vpaths[i];
2783 
2784  /* set initial mtu before enabling the device */
2785  status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2786  if (status != VXGE_HW_OK) {
2788  "%s: fatal: can not set new MTU", dev->name);
2789  ret = -EPERM;
2790  goto out2;
2791  }
2792  }
2793 
2796  "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2798 
2799  /* Restore the DA, VID table and also multicast and promiscuous mode
2800  * states
2801  */
2802  if (vdev->all_multi_flg) {
2803  for (i = 0; i < vdev->no_of_vpath; i++) {
2804  vpath = &vdev->vpaths[i];
2805  vxge_restore_vpath_mac_addr(vpath);
2806  vxge_restore_vpath_vid_table(vpath);
2807 
2808  status = vxge_hw_vpath_mcast_enable(vpath->handle);
2809  if (status != VXGE_HW_OK)
2811  "%s:%d Enabling multicast failed",
2812  __func__, __LINE__);
2813  }
2814  }
2815 
2816  /* Enable vpath to sniff all unicast/multicast traffic that not
2817  * addressed to them. We allow promiscuous mode for PF only
2818  */
2819 
2820  val64 = 0;
2821  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2823 
2826  0,
2828  rxmac_authorize_all_addr),
2829  val64);
2830 
2833  0,
2835  rxmac_authorize_all_vid),
2836  val64);
2837 
2838  vxge_set_multicast(dev);
2839 
2840  /* Enabling Bcast and mcast for all vpath */
2841  for (i = 0; i < vdev->no_of_vpath; i++) {
2842  vpath = &vdev->vpaths[i];
2843  status = vxge_hw_vpath_bcast_enable(vpath->handle);
2844  if (status != VXGE_HW_OK)
2846  "%s : Can not enable bcast for vpath "
2847  "id %d", dev->name, i);
2848  if (vdev->config.addr_learn_en) {
2849  status = vxge_hw_vpath_mcast_enable(vpath->handle);
2850  if (status != VXGE_HW_OK)
2852  "%s : Can not enable mcast for vpath "
2853  "id %d", dev->name, i);
2854  }
2855  }
2856 
2858  vdev->config.tx_pause_enable,
2859  vdev->config.rx_pause_enable);
2860 
2861  if (vdev->vp_reset_timer.function == NULL)
2862  vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset, vdev,
2863  HZ / 2);
2864 
2865  /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2866  if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2867  vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2868  HZ / 2);
2869 
2871 
2872  smp_wmb();
2873 
2874  if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2875  netif_carrier_on(vdev->ndev);
2876  netdev_notice(vdev->ndev, "Link Up\n");
2877  vdev->stats.link_up++;
2878  }
2879 
2881 
2882  smp_wmb();
2883 
2884  for (i = 0; i < vdev->no_of_vpath; i++) {
2885  vpath = &vdev->vpaths[i];
2886 
2887  vxge_hw_vpath_enable(vpath->handle);
2888  smp_wmb();
2890  }
2891 
2892  netif_tx_start_all_queues(vdev->ndev);
2893 
2894  /* configure CI */
2895  vxge_config_ci_for_tti_rti(vdev);
2896 
2897  goto out0;
2898 
2899 out2:
2900  vxge_rem_isr(vdev);
2901 
2902  /* Disable napi */
2903  if (vdev->config.intr_type != MSI_X)
2904  napi_disable(&vdev->napi);
2905  else {
2906  for (i = 0; i < vdev->no_of_vpath; i++)
2907  napi_disable(&vdev->vpaths[i].ring.napi);
2908  }
2909 
2910 out1:
2911  vxge_close_vpaths(vdev, 0);
2912 out0:
2914  "%s: %s:%d Exiting...",
2915  dev->name, __func__, __LINE__);
2916  return ret;
2917 }
2918 
2919 /* Loop through the mac address list and delete all the entries */
2920 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2921 {
2922 
2923  struct list_head *entry, *next;
2924  if (list_empty(&vpath->mac_addr_list))
2925  return;
2926 
2927  list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2928  list_del(entry);
2929  kfree((struct vxge_mac_addrs *)entry);
2930  }
2931 }
2932 
2933 static void vxge_napi_del_all(struct vxgedev *vdev)
2934 {
2935  int i;
2936  if (vdev->config.intr_type != MSI_X)
2937  netif_napi_del(&vdev->napi);
2938  else {
2939  for (i = 0; i < vdev->no_of_vpath; i++)
2940  netif_napi_del(&vdev->vpaths[i].ring.napi);
2941  }
2942 }
2943 
2944 static int do_vxge_close(struct net_device *dev, int do_io)
2945 {
2946  enum vxge_hw_status status;
2947  struct vxgedev *vdev;
2948  struct __vxge_hw_device *hldev;
2949  int i;
2950  u64 val64, vpath_vector;
2951  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2952  dev->name, __func__, __LINE__);
2953 
2954  vdev = netdev_priv(dev);
2955  hldev = pci_get_drvdata(vdev->pdev);
2956 
2957  if (unlikely(!is_vxge_card_up(vdev)))
2958  return 0;
2959 
2960  /* If vxge_handle_crit_err task is executing,
2961  * wait till it completes. */
2963  msleep(50);
2964 
2965  if (do_io) {
2966  /* Put the vpath back in normal mode */
2967  vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2968  status = vxge_hw_mgmt_reg_read(vdev->devh,
2970  0,
2971  (ulong)offsetof(
2972  struct vxge_hw_mrpcim_reg,
2973  rts_mgr_cbasin_cfg),
2974  &val64);
2975  if (status == VXGE_HW_OK) {
2976  val64 &= ~vpath_vector;
2977  status = vxge_hw_mgmt_reg_write(vdev->devh,
2979  0,
2980  (ulong)offsetof(
2981  struct vxge_hw_mrpcim_reg,
2982  rts_mgr_cbasin_cfg),
2983  val64);
2984  }
2985 
2986  /* Remove the function 0 from promiscuous mode */
2989  0,
2991  rxmac_authorize_all_addr),
2992  0);
2993 
2996  0,
2998  rxmac_authorize_all_vid),
2999  0);
3000 
3001  smp_wmb();
3002  }
3003 
3004  if (vdev->titan1)
3006 
3008 
3009  if (do_io)
3011 
3013 
3014  /* Disable napi */
3015  if (vdev->config.intr_type != MSI_X)
3016  napi_disable(&vdev->napi);
3017  else {
3018  for (i = 0; i < vdev->no_of_vpath; i++)
3019  napi_disable(&vdev->vpaths[i].ring.napi);
3020  }
3021 
3022  netif_carrier_off(vdev->ndev);
3023  netdev_notice(vdev->ndev, "Link Down\n");
3024  netif_tx_stop_all_queues(vdev->ndev);
3025 
3026  /* Note that at this point xmit() is stopped by upper layer */
3027  if (do_io)
3029 
3030  vxge_rem_isr(vdev);
3031 
3032  vxge_napi_del_all(vdev);
3033 
3034  if (do_io)
3035  vxge_reset_all_vpaths(vdev);
3036 
3037  vxge_close_vpaths(vdev, 0);
3038 
3040  "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
3041 
3043 
3044  return 0;
3045 }
3046 
3058 static int vxge_close(struct net_device *dev)
3059 {
3060  do_vxge_close(dev, 1);
3061  return 0;
3062 }
3063 
3072 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3073 {
3074  struct vxgedev *vdev = netdev_priv(dev);
3075 
3077  "%s:%d", __func__, __LINE__);
3078  if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3079  vxge_debug_init(vdev->level_err,
3080  "%s: mtu size is invalid", dev->name);
3081  return -EPERM;
3082  }
3083 
3084  /* check if device is down already */
3085  if (unlikely(!is_vxge_card_up(vdev))) {
3086  /* just store new value, will use later on open() */
3087  dev->mtu = new_mtu;
3088  vxge_debug_init(vdev->level_err,
3089  "%s", "device is down on MTU change");
3090  return 0;
3091  }
3092 
3094  "trying to apply new MTU %d", new_mtu);
3095 
3096  if (vxge_close(dev))
3097  return -EIO;
3098 
3099  dev->mtu = new_mtu;
3100  vdev->mtu = new_mtu;
3101 
3102  if (vxge_open(dev))
3103  return -EIO;
3104 
3106  "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3107 
3109  "%s:%d Exiting...", __func__, __LINE__);
3110 
3111  return 0;
3112 }
3113 
3120 static struct rtnl_link_stats64 *
3121 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3122 {
3123  struct vxgedev *vdev = netdev_priv(dev);
3124  int k;
3125 
3126  /* net_stats already zeroed by caller */
3127  for (k = 0; k < vdev->no_of_vpath; k++) {
3128  struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3129  struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3130  unsigned int start;
3131  u64 packets, bytes, multicast;
3132 
3133  do {
3134  start = u64_stats_fetch_begin_bh(&rxstats->syncp);
3135 
3136  packets = rxstats->rx_frms;
3137  multicast = rxstats->rx_mcast;
3138  bytes = rxstats->rx_bytes;
3139  } while (u64_stats_fetch_retry_bh(&rxstats->syncp, start));
3140 
3141  net_stats->rx_packets += packets;
3142  net_stats->rx_bytes += bytes;
3143  net_stats->multicast += multicast;
3144 
3145  net_stats->rx_errors += rxstats->rx_errors;
3146  net_stats->rx_dropped += rxstats->rx_dropped;
3147 
3148  do {
3149  start = u64_stats_fetch_begin_bh(&txstats->syncp);
3150 
3151  packets = txstats->tx_frms;
3152  bytes = txstats->tx_bytes;
3153  } while (u64_stats_fetch_retry_bh(&txstats->syncp, start));
3154 
3155  net_stats->tx_packets += packets;
3156  net_stats->tx_bytes += bytes;
3157  net_stats->tx_errors += txstats->tx_errors;
3158  }
3159 
3160  return net_stats;
3161 }
3162 
3163 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3164 {
3165  enum vxge_hw_status status;
3166  u64 val64;
3167 
3168  /* Timestamp is passed to the driver via the FCS, therefore we
3169  * must disable the FCS stripping by the adapter. Since this is
3170  * required for the driver to load (due to a hardware bug),
3171  * there is no need to do anything special here.
3172  */
3173  val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3176 
3177  status = vxge_hw_mgmt_reg_write(devh,
3179  0,
3181  xmac_timestamp),
3182  val64);
3184  devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3185  return status;
3186 }
3187 
3188 static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
3189 {
3190  struct hwtstamp_config config;
3191  int i;
3192 
3193  if (copy_from_user(&config, data, sizeof(config)))
3194  return -EFAULT;
3195 
3196  /* reserved for future extensions */
3197  if (config.flags)
3198  return -EINVAL;
3199 
3200  /* Transmit HW Timestamp not supported */
3201  switch (config.tx_type) {
3202  case HWTSTAMP_TX_OFF:
3203  break;
3204  case HWTSTAMP_TX_ON:
3205  default:
3206  return -ERANGE;
3207  }
3208 
3209  switch (config.rx_filter) {
3210  case HWTSTAMP_FILTER_NONE:
3211  vdev->rx_hwts = 0;
3212  config.rx_filter = HWTSTAMP_FILTER_NONE;
3213  break;
3214 
3215  case HWTSTAMP_FILTER_ALL:
3216  case HWTSTAMP_FILTER_SOME:
3229  if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3230  return -EFAULT;
3231 
3232  vdev->rx_hwts = 1;
3233  config.rx_filter = HWTSTAMP_FILTER_ALL;
3234  break;
3235 
3236  default:
3237  return -ERANGE;
3238  }
3239 
3240  for (i = 0; i < vdev->no_of_vpath; i++)
3241  vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3242 
3243  if (copy_to_user(data, &config, sizeof(config)))
3244  return -EFAULT;
3245 
3246  return 0;
3247 }
3248 
3259 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3260 {
3261  struct vxgedev *vdev = netdev_priv(dev);
3262  int ret;
3263 
3264  switch (cmd) {
3265  case SIOCSHWTSTAMP:
3266  ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data);
3267  if (ret)
3268  return ret;
3269  break;
3270  default:
3271  return -EOPNOTSUPP;
3272  }
3273 
3274  return 0;
3275 }
3276 
3285 static void vxge_tx_watchdog(struct net_device *dev)
3286 {
3287  struct vxgedev *vdev;
3288 
3289  vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3290 
3291  vdev = netdev_priv(dev);
3292 
3294 
3295  schedule_work(&vdev->reset_task);
3297  "%s:%d Exiting...", __func__, __LINE__);
3298 }
3299 
3307 static int
3308 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3309 {
3310  struct vxgedev *vdev = netdev_priv(dev);
3311  struct vxge_vpath *vpath;
3312  int vp_id;
3313 
3314  /* Add these vlan to the vid table */
3315  for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3316  vpath = &vdev->vpaths[vp_id];
3317  if (!vpath->is_open)
3318  continue;
3319  vxge_hw_vpath_vid_add(vpath->handle, vid);
3320  }
3321  set_bit(vid, vdev->active_vlans);
3322  return 0;
3323 }
3324 
3332 static int
3333 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3334 {
3335  struct vxgedev *vdev = netdev_priv(dev);
3336  struct vxge_vpath *vpath;
3337  int vp_id;
3338 
3339  vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3340 
3341  /* Delete this vlan from the vid table */
3342  for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3343  vpath = &vdev->vpaths[vp_id];
3344  if (!vpath->is_open)
3345  continue;
3346  vxge_hw_vpath_vid_delete(vpath->handle, vid);
3347  }
3349  "%s:%d Exiting...", __func__, __LINE__);
3350  clear_bit(vid, vdev->active_vlans);
3351  return 0;
3352 }
3353 
3354 static const struct net_device_ops vxge_netdev_ops = {
3355  .ndo_open = vxge_open,
3356  .ndo_stop = vxge_close,
3357  .ndo_get_stats64 = vxge_get_stats64,
3358  .ndo_start_xmit = vxge_xmit,
3359  .ndo_validate_addr = eth_validate_addr,
3360  .ndo_set_rx_mode = vxge_set_multicast,
3361  .ndo_do_ioctl = vxge_ioctl,
3362  .ndo_set_mac_address = vxge_set_mac_addr,
3363  .ndo_change_mtu = vxge_change_mtu,
3364  .ndo_fix_features = vxge_fix_features,
3365  .ndo_set_features = vxge_set_features,
3366  .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3367  .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3368  .ndo_tx_timeout = vxge_tx_watchdog,
3369 #ifdef CONFIG_NET_POLL_CONTROLLER
3370  .ndo_poll_controller = vxge_netpoll,
3371 #endif
3372 };
3373 
3374 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3375  struct vxge_config *config,
3376  int high_dma, int no_of_vpath,
3377  struct vxgedev **vdev_out)
3378 {
3379  struct net_device *ndev;
3380  enum vxge_hw_status status = VXGE_HW_OK;
3381  struct vxgedev *vdev;
3382  int ret = 0, no_of_queue = 1;
3383  u64 stat;
3384 
3385  *vdev_out = NULL;
3386  if (config->tx_steering_type)
3387  no_of_queue = no_of_vpath;
3388 
3389  ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3390  no_of_queue);
3391  if (ndev == NULL) {
3394  "%s : device allocation failed", __func__);
3395  ret = -ENODEV;
3396  goto _out0;
3397  }
3398 
3401  "%s: %s:%d Entering...",
3402  ndev->name, __func__, __LINE__);
3403 
3404  vdev = netdev_priv(ndev);
3405  memset(vdev, 0, sizeof(struct vxgedev));
3406 
3407  vdev->ndev = ndev;
3408  vdev->devh = hldev;
3409  vdev->pdev = hldev->pdev;
3410  memcpy(&vdev->config, config, sizeof(struct vxge_config));
3411  vdev->rx_hwts = 0;
3412  vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3413 
3414  SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3415 
3420  if (vdev->config.rth_steering != NO_STEERING)
3421  ndev->hw_features |= NETIF_F_RXHASH;
3422 
3423  ndev->features |= ndev->hw_features |
3425 
3426 
3427  ndev->netdev_ops = &vxge_netdev_ops;
3428 
3430  INIT_WORK(&vdev->reset_task, vxge_reset);
3431 
3433 
3434  /* Allocate memory for vpath */
3435  vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3436  no_of_vpath, GFP_KERNEL);
3437  if (!vdev->vpaths) {
3439  "%s: vpath memory allocation failed",
3440  vdev->ndev->name);
3441  ret = -ENOMEM;
3442  goto _out1;
3443  }
3444 
3446  "%s : checksuming enabled", __func__);
3447 
3448  if (high_dma) {
3449  ndev->features |= NETIF_F_HIGHDMA;
3451  "%s : using High DMA", __func__);
3452  }
3453 
3454  ret = register_netdev(ndev);
3455  if (ret) {
3457  "%s: %s : device registration failed!",
3458  ndev->name, __func__);
3459  goto _out2;
3460  }
3461 
3462  /* Set the factory defined MAC address initially */
3463  ndev->addr_len = ETH_ALEN;
3464 
3465  /* Make Link state as off at this point, when the Link change
3466  * interrupt comes the state will be automatically changed to
3467  * the right state.
3468  */
3469  netif_carrier_off(ndev);
3470 
3472  "%s: Ethernet device registered",
3473  ndev->name);
3474 
3475  hldev->ndev = ndev;
3476  *vdev_out = vdev;
3477 
3478  /* Resetting the Device stats */
3479  status = vxge_hw_mrpcim_stats_access(
3480  hldev,
3482  0,
3483  0,
3484  &stat);
3485 
3486  if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3489  "%s: device stats clear returns"
3490  "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3491 
3493  "%s: %s:%d Exiting...",
3494  ndev->name, __func__, __LINE__);
3495 
3496  return ret;
3497 _out2:
3498  kfree(vdev->vpaths);
3499 _out1:
3500  free_netdev(ndev);
3501 _out0:
3502  return ret;
3503 }
3504 
3505 /*
3506  * vxge_device_unregister
3507  *
3508  * This function will unregister and free network device
3509  */
3510 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3511 {
3512  struct vxgedev *vdev;
3513  struct net_device *dev;
3514  char buf[IFNAMSIZ];
3515 
3516  dev = hldev->ndev;
3517  vdev = netdev_priv(dev);
3518 
3519  vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3520  __func__, __LINE__);
3521 
3522  strncpy(buf, dev->name, IFNAMSIZ);
3523 
3524  flush_work(&vdev->reset_task);
3525 
3526  /* in 2.6 will call stop() if device is up */
3527  unregister_netdev(dev);
3528 
3529  kfree(vdev->vpaths);
3530 
3531  /* we are safe to free it now */
3532  free_netdev(dev);
3533 
3534  vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3535  buf);
3536  vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d Exiting...", buf,
3537  __func__, __LINE__);
3538 }
3539 
3540 /*
3541  * vxge_callback_crit_err
3542  *
3543  * This function is called by the alarm handler in interrupt context.
3544  * Driver must analyze it based on the event type.
3545  */
3546 static void
3547 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3548  enum vxge_hw_event type, u64 vp_id)
3549 {
3550  struct net_device *dev = hldev->ndev;
3551  struct vxgedev *vdev = netdev_priv(dev);
3552  struct vxge_vpath *vpath = NULL;
3553  int vpath_idx;
3554 
3556  "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3557 
3558  /* Note: This event type should be used for device wide
3559  * indications only - Serious errors, Slot freeze and critical errors
3560  */
3561  vdev->cric_err_event = type;
3562 
3563  for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3564  vpath = &vdev->vpaths[vpath_idx];
3565  if (vpath->device_id == vp_id)
3566  break;
3567  }
3568 
3569  if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3570  if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3572  "%s: Slot is frozen", vdev->ndev->name);
3573  } else if (type == VXGE_HW_EVENT_SERR) {
3575  "%s: Encountered Serious Error",
3576  vdev->ndev->name);
3577  } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3579  "%s: Encountered Critical Error",
3580  vdev->ndev->name);
3581  }
3582 
3583  if ((type == VXGE_HW_EVENT_SERR) ||
3584  (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3585  if (unlikely(vdev->exec_mode))
3587  } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3588  vxge_hw_device_mask_all(hldev);
3589  if (unlikely(vdev->exec_mode))
3591  } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3592  (type == VXGE_HW_EVENT_VPATH_ERR)) {
3593 
3594  if (unlikely(vdev->exec_mode))
3596  else {
3597  /* check if this vpath is already set for reset */
3598  if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3599 
3600  /* disable interrupts for this vpath */
3601  vxge_vpath_intr_disable(vdev, vpath_idx);
3602 
3603  /* stop the queue for this vpath */
3604  netif_tx_stop_queue(vpath->fifo.txq);
3605  }
3606  }
3607  }
3608 
3610  "%s: %s:%d Exiting...",
3611  vdev->ndev->name, __func__, __LINE__);
3612 }
3613 
3614 static void verify_bandwidth(void)
3615 {
3616  int i, band_width, total = 0, equal_priority = 0;
3617 
3618  /* 1. If user enters 0 for some fifo, give equal priority to all */
3619  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3620  if (bw_percentage[i] == 0) {
3621  equal_priority = 1;
3622  break;
3623  }
3624  }
3625 
3626  if (!equal_priority) {
3627  /* 2. If sum exceeds 100, give equal priority to all */
3628  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3629  if (bw_percentage[i] == 0xFF)
3630  break;
3631 
3632  total += bw_percentage[i];
3633  if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3634  equal_priority = 1;
3635  break;
3636  }
3637  }
3638  }
3639 
3640  if (!equal_priority) {
3641  /* Is all the bandwidth consumed? */
3642  if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3643  if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3644  /* Split rest of bw equally among next VPs*/
3645  band_width =
3646  (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3647  (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3648  if (band_width < 2) /* min of 2% */
3649  equal_priority = 1;
3650  else {
3651  for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3652  i++)
3653  bw_percentage[i] =
3654  band_width;
3655  }
3656  }
3657  } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3658  equal_priority = 1;
3659  }
3660 
3661  if (equal_priority) {
3663  "%s: Assigning equal bandwidth to all the vpaths",
3665  bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3667  for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3668  bw_percentage[i] = bw_percentage[0];
3669  }
3670 }
3671 
3672 /*
3673  * Vpath configuration
3674  */
3675 static int __devinit vxge_config_vpaths(
3676  struct vxge_hw_device_config *device_config,
3677  u64 vpath_mask, struct vxge_config *config_param)
3678 {
3679  int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3680  u32 txdl_size, txdl_per_memblock;
3681 
3682  temp = driver_config->vpath_per_dev;
3683  if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3684  (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3685  /* No more CPU. Return vpath number as zero.*/
3686  if (driver_config->g_no_cpus == -1)
3687  return 0;
3688 
3689  if (!driver_config->g_no_cpus)
3690  driver_config->g_no_cpus =
3692 
3693  driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3694  if (!driver_config->vpath_per_dev)
3695  driver_config->vpath_per_dev = 1;
3696 
3697  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3698  if (!vxge_bVALn(vpath_mask, i, 1))
3699  continue;
3700  else
3701  default_no_vpath++;
3702  if (default_no_vpath < driver_config->vpath_per_dev)
3703  driver_config->vpath_per_dev = default_no_vpath;
3704 
3705  driver_config->g_no_cpus = driver_config->g_no_cpus -
3706  (driver_config->vpath_per_dev * 2);
3707  if (driver_config->g_no_cpus <= 0)
3708  driver_config->g_no_cpus = -1;
3709  }
3710 
3711  if (driver_config->vpath_per_dev == 1) {
3713  "%s: Disable tx and rx steering, "
3714  "as single vpath is configured", VXGE_DRIVER_NAME);
3715  config_param->rth_steering = NO_STEERING;
3716  config_param->tx_steering_type = NO_STEERING;
3717  device_config->rth_en = 0;
3718  }
3719 
3720  /* configure bandwidth */
3721  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3722  device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3723 
3724  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3725  device_config->vp_config[i].vp_id = i;
3726  device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3727  if (no_of_vpaths < driver_config->vpath_per_dev) {
3728  if (!vxge_bVALn(vpath_mask, i, 1)) {
3730  "%s: vpath: %d is not available",
3731  VXGE_DRIVER_NAME, i);
3732  continue;
3733  } else {
3735  "%s: vpath: %d available",
3736  VXGE_DRIVER_NAME, i);
3737  no_of_vpaths++;
3738  }
3739  } else {
3741  "%s: vpath: %d is not configured, "
3742  "max_config_vpath exceeded",
3743  VXGE_DRIVER_NAME, i);
3744  break;
3745  }
3746 
3747  /* Configure Tx fifo's */
3748  device_config->vp_config[i].fifo.enable =
3750  device_config->vp_config[i].fifo.max_frags =
3751  MAX_SKB_FRAGS + 1;
3752  device_config->vp_config[i].fifo.memblock_size =
3754 
3755  txdl_size = device_config->vp_config[i].fifo.max_frags *
3756  sizeof(struct vxge_hw_fifo_txd);
3757  txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3758 
3759  device_config->vp_config[i].fifo.fifo_blocks =
3760  ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3761 
3762  device_config->vp_config[i].fifo.intr =
3764 
3765  /* Configure tti properties */
3766  device_config->vp_config[i].tti.intr_enable =
3768 
3769  device_config->vp_config[i].tti.btimer_val =
3770  (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3771 
3772  device_config->vp_config[i].tti.timer_ac_en =
3774 
3775  /* For msi-x with napi (each vector has a handler of its own) -
3776  * Set CI to OFF for all vpaths
3777  */
3778  device_config->vp_config[i].tti.timer_ci_en =
3780 
3781  device_config->vp_config[i].tti.timer_ri_en =
3783 
3784  device_config->vp_config[i].tti.util_sel =
3786 
3787  device_config->vp_config[i].tti.ltimer_val =
3788  (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3789 
3790  device_config->vp_config[i].tti.rtimer_val =
3791  (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3792 
3793  device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3794  device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3795  device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3796  device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3797  device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3798  device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3799  device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3800 
3801  /* Configure Rx rings */
3802  device_config->vp_config[i].ring.enable =
3804 
3805  device_config->vp_config[i].ring.ring_blocks =
3807 
3808  device_config->vp_config[i].ring.buffer_mode =
3810 
3811  device_config->vp_config[i].ring.rxds_limit =
3813 
3814  device_config->vp_config[i].ring.scatter_mode =
3816 
3817  /* Configure rti properties */
3818  device_config->vp_config[i].rti.intr_enable =
3820 
3821  device_config->vp_config[i].rti.btimer_val =
3822  (VXGE_RTI_BTIMER_VAL * 1000)/272;
3823 
3824  device_config->vp_config[i].rti.timer_ac_en =
3826 
3827  device_config->vp_config[i].rti.timer_ci_en =
3829 
3830  device_config->vp_config[i].rti.timer_ri_en =
3832 
3833  device_config->vp_config[i].rti.util_sel =
3835 
3836  device_config->vp_config[i].rti.urange_a =
3838  device_config->vp_config[i].rti.urange_b =
3840  device_config->vp_config[i].rti.urange_c =
3842  device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3843  device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3844  device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3845  device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3846 
3847  device_config->vp_config[i].rti.rtimer_val =
3848  (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3849 
3850  device_config->vp_config[i].rti.ltimer_val =
3851  (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3852 
3853  device_config->vp_config[i].rpa_strip_vlan_tag =
3854  vlan_tag_strip;
3855  }
3856 
3857  driver_config->vpath_per_dev = temp;
3858  return no_of_vpaths;
3859 }
3860 
3861 /* initialize device configuratrions */
3862 static void __devinit vxge_device_config_init(
3863  struct vxge_hw_device_config *device_config,
3864  int *intr_type)
3865 {
3866  /* Used for CQRQ/SRQ. */
3867  device_config->dma_blockpool_initial =
3869 
3870  device_config->dma_blockpool_max =
3872 
3873  if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3874  max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3875 
3876 #ifndef CONFIG_PCI_MSI
3878  "%s: This Kernel does not support "
3879  "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3880  *intr_type = INTA;
3881 #endif
3882 
3883  /* Configure whether MSI-X or IRQL. */
3884  switch (*intr_type) {
3885  case INTA:
3886  device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3887  break;
3888 
3889  case MSI_X:
3890  device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3891  break;
3892  }
3893 
3894  /* Timer period between device poll */
3895  device_config->device_poll_millis = VXGE_TIMER_DELAY;
3896 
3897  /* Configure mac based steering. */
3898  device_config->rts_mac_en = addr_learn_en;
3899 
3900  /* Configure Vpaths */
3901  device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3902 
3903  vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3904  __func__);
3905  vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3906  device_config->intr_mode);
3907  vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3908  device_config->device_poll_millis);
3909  vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3910  device_config->rth_en);
3911  vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3912  device_config->rth_it_type);
3913 }
3914 
3915 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3916 {
3917  int i;
3918 
3920  "%s: %d Vpath(s) opened",
3921  vdev->ndev->name, vdev->no_of_vpath);
3922 
3923  switch (vdev->config.intr_type) {
3924  case INTA:
3926  "%s: Interrupt type INTA", vdev->ndev->name);
3927  break;
3928 
3929  case MSI_X:
3931  "%s: Interrupt type MSI-X", vdev->ndev->name);
3932  break;
3933  }
3934 
3935  if (vdev->config.rth_steering) {
3937  "%s: RTH steering enabled for TCP_IPV4",
3938  vdev->ndev->name);
3939  } else {
3941  "%s: RTH steering disabled", vdev->ndev->name);
3942  }
3943 
3944  switch (vdev->config.tx_steering_type) {
3945  case NO_STEERING:
3947  "%s: Tx steering disabled", vdev->ndev->name);
3948  break;
3949  case TX_PRIORITY_STEERING:
3951  "%s: Unsupported tx steering option",
3952  vdev->ndev->name);
3954  "%s: Tx steering disabled", vdev->ndev->name);
3955  vdev->config.tx_steering_type = 0;
3956  break;
3957  case TX_VLAN_STEERING:
3959  "%s: Unsupported tx steering option",
3960  vdev->ndev->name);
3962  "%s: Tx steering disabled", vdev->ndev->name);
3963  vdev->config.tx_steering_type = 0;
3964  break;
3965  case TX_MULTIQ_STEERING:
3967  "%s: Tx multiqueue steering enabled",
3968  vdev->ndev->name);
3969  break;
3970  case TX_PORT_STEERING:
3972  "%s: Tx port steering enabled",
3973  vdev->ndev->name);
3974  break;
3975  default:
3977  "%s: Unsupported tx steering type",
3978  vdev->ndev->name);
3980  "%s: Tx steering disabled", vdev->ndev->name);
3981  vdev->config.tx_steering_type = 0;
3982  }
3983 
3984  if (vdev->config.addr_learn_en)
3986  "%s: MAC Address learning enabled", vdev->ndev->name);
3987 
3988  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3989  if (!vxge_bVALn(vpath_mask, i, 1))
3990  continue;
3992  "%s: MTU size - %d", vdev->ndev->name,
3993  ((vdev->devh))->
3994  config.vp_config[i].mtu);
3996  "%s: VLAN tag stripping %s", vdev->ndev->name,
3997  ((vdev->devh))->
3998  config.vp_config[i].rpa_strip_vlan_tag
3999  ? "Enabled" : "Disabled");
4001  "%s: Max frags : %d", vdev->ndev->name,
4002  ((vdev->devh))->
4003  config.vp_config[i].fifo.max_frags);
4004  break;
4005  }
4006 }
4007 
4008 #ifdef CONFIG_PM
4009 
4013 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4014 {
4015  return -ENOSYS;
4016 }
4021 static int vxge_pm_resume(struct pci_dev *pdev)
4022 {
4023  return -ENOSYS;
4024 }
4025 
4026 #endif
4027 
4036 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4037  pci_channel_state_t state)
4038 {
4039  struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4040  struct net_device *netdev = hldev->ndev;
4041 
4042  netif_device_detach(netdev);
4043 
4044  if (state == pci_channel_io_perm_failure)
4046 
4047  if (netif_running(netdev)) {
4048  /* Bring down the card, while avoiding PCI I/O */
4049  do_vxge_close(netdev, 0);
4050  }
4051 
4052  pci_disable_device(pdev);
4053 
4055 }
4056 
4066 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4067 {
4068  struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4069  struct net_device *netdev = hldev->ndev;
4070 
4071  struct vxgedev *vdev = netdev_priv(netdev);
4072 
4073  if (pci_enable_device(pdev)) {
4074  netdev_err(netdev, "Cannot re-enable device after reset\n");
4076  }
4077 
4078  pci_set_master(pdev);
4079  do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4080 
4081  return PCI_ERS_RESULT_RECOVERED;
4082 }
4083 
4091 static void vxge_io_resume(struct pci_dev *pdev)
4092 {
4093  struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4094  struct net_device *netdev = hldev->ndev;
4095 
4096  if (netif_running(netdev)) {
4097  if (vxge_open(netdev)) {
4098  netdev_err(netdev,
4099  "Can't bring device back up after reset\n");
4100  return;
4101  }
4102  }
4103 
4104  netif_device_attach(netdev);
4105 }
4106 
4107 static inline u32 vxge_get_num_vfs(u64 function_mode)
4108 {
4109  u32 num_functions = 0;
4110 
4111  switch (function_mode) {
4114  num_functions = 8;
4115  break;
4117  num_functions = 1;
4118  break;
4122  num_functions = 17;
4123  break;
4125  num_functions = 4;
4126  break;
4128  num_functions = 2;
4129  break;
4131  num_functions = 8; /* TODO */
4132  break;
4133  }
4134  return num_functions;
4135 }
4136 
4137 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4138 {
4139  struct __vxge_hw_device *hldev = vdev->devh;
4140  u32 maj, min, bld, cmaj, cmin, cbld;
4141  enum vxge_hw_status status;
4142  const struct firmware *fw;
4143  int ret;
4144 
4145  ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4146  if (ret) {
4147  vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4148  VXGE_DRIVER_NAME, fw_name);
4149  goto out;
4150  }
4151 
4152  /* Load the new firmware onto the adapter */
4153  status = vxge_update_fw_image(hldev, fw->data, fw->size);
4154  if (status != VXGE_HW_OK) {
4156  "%s: FW image download to adapter failed '%s'.",
4157  VXGE_DRIVER_NAME, fw_name);
4158  ret = -EIO;
4159  goto out;
4160  }
4161 
4162  /* Read the version of the new firmware */
4163  status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4164  if (status != VXGE_HW_OK) {
4166  "%s: Upgrade read version failed '%s'.",
4167  VXGE_DRIVER_NAME, fw_name);
4168  ret = -EIO;
4169  goto out;
4170  }
4171 
4172  cmaj = vdev->config.device_hw_info.fw_version.major;
4173  cmin = vdev->config.device_hw_info.fw_version.minor;
4174  cbld = vdev->config.device_hw_info.fw_version.build;
4175  /* It's possible the version in /lib/firmware is not the latest version.
4176  * If so, we could get into a loop of trying to upgrade to the latest
4177  * and flashing the older version.
4178  */
4179  if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4180  !override) {
4181  ret = -EINVAL;
4182  goto out;
4183  }
4184 
4185  printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4186  maj, min, bld);
4187 
4188  /* Flash the adapter with the new firmware */
4189  status = vxge_hw_flash_fw(hldev);
4190  if (status != VXGE_HW_OK) {
4191  vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4192  VXGE_DRIVER_NAME, fw_name);
4193  ret = -EIO;
4194  goto out;
4195  }
4196 
4197  printk(KERN_NOTICE "Upgrade of firmware successful! Adapter must be "
4198  "hard reset before using, thus requiring a system reboot or a "
4199  "hotplug event.\n");
4200 
4201 out:
4202  release_firmware(fw);
4203  return ret;
4204 }
4205 
4206 static int vxge_probe_fw_update(struct vxgedev *vdev)
4207 {
4208  u32 maj, min, bld;
4209  int ret, gpxe = 0;
4210  char *fw_name;
4211 
4212  maj = vdev->config.device_hw_info.fw_version.major;
4213  min = vdev->config.device_hw_info.fw_version.minor;
4214  bld = vdev->config.device_hw_info.fw_version.build;
4215 
4216  if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4217  return 0;
4218 
4219  /* Ignore the build number when determining if the current firmware is
4220  * "too new" to load the driver
4221  */
4222  if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4223  vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4224  "version, unable to load driver\n",
4226  return -EINVAL;
4227  }
4228 
4229  /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4230  * work with this driver.
4231  */
4232  if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4233  vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4234  "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4235  return -EINVAL;
4236  }
4237 
4238  /* If file not specified, determine gPXE or not */
4239  if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4240  int i;
4241  for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4242  if (vdev->devh->eprom_versions[i]) {
4243  gpxe = 1;
4244  break;
4245  }
4246  }
4247  if (gpxe)
4248  fw_name = "vxge/X3fw-pxe.ncf";
4249  else
4250  fw_name = "vxge/X3fw.ncf";
4251 
4252  ret = vxge_fw_upgrade(vdev, fw_name, 0);
4253  /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4254  * probe, so ignore them
4255  */
4256  if (ret != -EINVAL && ret != -ENOENT)
4257  return -EIO;
4258  else
4259  ret = 0;
4260 
4262  VXGE_FW_VER(maj, min, 0)) {
4263  vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4264  " be used with this driver.",
4265  VXGE_DRIVER_NAME, maj, min, bld);
4266  return -EINVAL;
4267  }
4268 
4269  return ret;
4270 }
4271 
4272 static int __devinit is_sriov_initialized(struct pci_dev *pdev)
4273 {
4274  int pos;
4275  u16 ctrl;
4276 
4278  if (pos) {
4279  pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4280  if (ctrl & PCI_SRIOV_CTRL_VFE)
4281  return 1;
4282  }
4283  return 0;
4284 }
4285 
4286 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4287  .link_up = vxge_callback_link_up,
4288  .link_down = vxge_callback_link_down,
4289  .crit_err = vxge_callback_crit_err,
4290 };
4291 
4303 static int __devinit
4304 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4305 {
4306  struct __vxge_hw_device *hldev;
4307  enum vxge_hw_status status;
4308  int ret;
4309  int high_dma = 0;
4310  u64 vpath_mask = 0;
4311  struct vxgedev *vdev;
4312  struct vxge_config *ll_config = NULL;
4313  struct vxge_hw_device_config *device_config = NULL;
4314  struct vxge_hw_device_attr attr;
4315  int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4316  u8 *macaddr;
4317  struct vxge_mac_addrs *entry;
4318  static int bus = -1, device = -1;
4319  u32 host_type;
4320  u8 new_device = 0;
4321  enum vxge_hw_status is_privileged;
4322  u32 function_mode;
4323  u32 num_vfs = 0;
4324 
4325  vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4326  attr.pdev = pdev;
4327 
4328  /* In SRIOV-17 mode, functions of the same adapter
4329  * can be deployed on different buses
4330  */
4331  if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4332  !pdev->is_virtfn)
4333  new_device = 1;
4334 
4335  bus = pdev->bus->number;
4336  device = PCI_SLOT(pdev->devfn);
4337 
4338  if (new_device) {
4339  if (driver_config->config_dev_cnt &&
4340  (driver_config->config_dev_cnt !=
4341  driver_config->total_dev_cnt))
4343  "%s: Configured %d of %d devices",
4345  driver_config->config_dev_cnt,
4346  driver_config->total_dev_cnt);
4347  driver_config->config_dev_cnt = 0;
4348  driver_config->total_dev_cnt = 0;
4349  }
4350 
4351  /* Now making the CPU based no of vpath calculation
4352  * applicable for individual functions as well.
4353  */
4354  driver_config->g_no_cpus = 0;
4355  driver_config->vpath_per_dev = max_config_vpath;
4356 
4357  driver_config->total_dev_cnt++;
4358  if (++driver_config->config_dev_cnt > max_config_dev) {
4359  ret = 0;
4360  goto _exit0;
4361  }
4362 
4363  device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4364  GFP_KERNEL);
4365  if (!device_config) {
4366  ret = -ENOMEM;
4368  "device_config : malloc failed %s %d",
4369  __FILE__, __LINE__);
4370  goto _exit0;
4371  }
4372 
4373  ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4374  if (!ll_config) {
4375  ret = -ENOMEM;
4377  "device_config : malloc failed %s %d",
4378  __FILE__, __LINE__);
4379  goto _exit0;
4380  }
4381  ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4382  ll_config->intr_type = MSI_X;
4383  ll_config->napi_weight = NEW_NAPI_WEIGHT;
4384  ll_config->rth_steering = RTH_STEERING;
4385 
4386  /* get the default configuration parameters */
4387  vxge_hw_device_config_default_get(device_config);
4388 
4389  /* initialize configuration parameters */
4390  vxge_device_config_init(device_config, &ll_config->intr_type);
4391 
4392  ret = pci_enable_device(pdev);
4393  if (ret) {
4395  "%s : can not enable PCI device", __func__);
4396  goto _exit0;
4397  }
4398 
4399  if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4401  "%s : using 64bit DMA", __func__);
4402 
4403  high_dma = 1;
4404 
4405  if (pci_set_consistent_dma_mask(pdev,
4406  DMA_BIT_MASK(64))) {
4408  "%s : unable to obtain 64bit DMA for "
4409  "consistent allocations", __func__);
4410  ret = -ENOMEM;
4411  goto _exit1;
4412  }
4413  } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4415  "%s : using 32bit DMA", __func__);
4416  } else {
4417  ret = -ENOMEM;
4418  goto _exit1;
4419  }
4420 
4421  ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4422  if (ret) {
4424  "%s : request regions failed", __func__);
4425  goto _exit1;
4426  }
4427 
4428  pci_set_master(pdev);
4429 
4430  attr.bar0 = pci_ioremap_bar(pdev, 0);
4431  if (!attr.bar0) {
4433  "%s : cannot remap io memory bar0", __func__);
4434  ret = -ENODEV;
4435  goto _exit2;
4436  }
4438  "pci ioremap bar0: %p:0x%llx",
4439  attr.bar0,
4440  (unsigned long long)pci_resource_start(pdev, 0));
4441 
4442  status = vxge_hw_device_hw_info_get(attr.bar0,
4443  &ll_config->device_hw_info);
4444  if (status != VXGE_HW_OK) {
4446  "%s: Reading of hardware info failed."
4447  "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4448  ret = -EINVAL;
4449  goto _exit3;
4450  }
4451 
4452  vpath_mask = ll_config->device_hw_info.vpath_mask;
4453  if (vpath_mask == 0) {
4455  "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4456  ret = -EINVAL;
4457  goto _exit3;
4458  }
4459 
4461  "%s:%d Vpath mask = %llx", __func__, __LINE__,
4462  (unsigned long long)vpath_mask);
4463 
4464  function_mode = ll_config->device_hw_info.function_mode;
4465  host_type = ll_config->device_hw_info.host_type;
4466  is_privileged = __vxge_hw_device_is_privilaged(host_type,
4467  ll_config->device_hw_info.func_id);
4468 
4469  /* Check how many vpaths are available */
4470  for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4471  if (!((vpath_mask) & vxge_mBIT(i)))
4472  continue;
4473  max_vpath_supported++;
4474  }
4475 
4476  if (new_device)
4477  num_vfs = vxge_get_num_vfs(function_mode) - 1;
4478 
4479  /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4480  if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4481  (ll_config->intr_type != INTA)) {
4482  ret = pci_enable_sriov(pdev, num_vfs);
4483  if (ret)
4485  "Failed in enabling SRIOV mode: %d\n", ret);
4486  /* No need to fail out, as an error here is non-fatal */
4487  }
4488 
4489  /*
4490  * Configure vpaths and get driver configured number of vpaths
4491  * which is less than or equal to the maximum vpaths per function.
4492  */
4493  no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4494  if (!no_of_vpath) {
4496  "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4497  ret = 0;
4498  goto _exit3;
4499  }
4500 
4501  /* Setting driver callbacks */
4502  attr.uld_callbacks = &vxge_callbacks;
4503 
4504  status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4505  if (status != VXGE_HW_OK) {
4507  "Failed to initialize device (%d)", status);
4508  ret = -EINVAL;
4509  goto _exit3;
4510  }
4511 
4512  if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4513  ll_config->device_hw_info.fw_version.minor,
4514  ll_config->device_hw_info.fw_version.build) >=
4516  struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4517 
4518  status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4519  if (status != VXGE_HW_OK) {
4520  vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4522  /* This is a non-fatal error, continue */
4523  }
4524 
4525  for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4526  hldev->eprom_versions[i] = img[i].version;
4527  if (!img[i].is_valid)
4528  break;
4529  vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4530  "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4531  VXGE_EPROM_IMG_MAJOR(img[i].version),
4532  VXGE_EPROM_IMG_MINOR(img[i].version),
4533  VXGE_EPROM_IMG_FIX(img[i].version),
4534  VXGE_EPROM_IMG_BUILD(img[i].version));
4535  }
4536  }
4537 
4538  /* if FCS stripping is not disabled in MAC fail driver load */
4539  status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4540  if (status != VXGE_HW_OK) {
4541  vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4542  " failing driver load", VXGE_DRIVER_NAME);
4543  ret = -EINVAL;
4544  goto _exit4;
4545  }
4546 
4547  /* Always enable HWTS. This will always cause the FCS to be invalid,
4548  * due to the fact that HWTS is using the FCS as the location of the
4549  * timestamp. The HW FCS checking will still correctly determine if
4550  * there is a valid checksum, and the FCS is being removed by the driver
4551  * anyway. So no fucntionality is being lost. Since it is always
4552  * enabled, we now simply use the ioctl call to set whether or not the
4553  * driver should be paying attention to the HWTS.
4554  */
4555  if (is_privileged == VXGE_HW_OK) {
4556  status = vxge_timestamp_config(hldev);
4557  if (status != VXGE_HW_OK) {
4558  vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4560  ret = -EFAULT;
4561  goto _exit4;
4562  }
4563  }
4564 
4566 
4567  /* set private device info */
4568  pci_set_drvdata(pdev, hldev);
4569 
4571  ll_config->addr_learn_en = addr_learn_en;
4572  ll_config->rth_algorithm = RTH_ALG_JENKINS;
4573  ll_config->rth_hash_type_tcpipv4 = 1;
4574  ll_config->rth_hash_type_ipv4 = 0;
4575  ll_config->rth_hash_type_tcpipv6 = 0;
4576  ll_config->rth_hash_type_ipv6 = 0;
4577  ll_config->rth_hash_type_tcpipv6ex = 0;
4578  ll_config->rth_hash_type_ipv6ex = 0;
4579  ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4582 
4583  ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4584  &vdev);
4585  if (ret) {
4586  ret = -EINVAL;
4587  goto _exit4;
4588  }
4589 
4590  ret = vxge_probe_fw_update(vdev);
4591  if (ret)
4592  goto _exit5;
4593 
4597 
4598  /* set private HW device info */
4599  vdev->mtu = VXGE_HW_DEFAULT_MTU;
4600  vdev->bar0 = attr.bar0;
4601  vdev->max_vpath_supported = max_vpath_supported;
4602  vdev->no_of_vpath = no_of_vpath;
4603 
4604  /* Virtual Path count */
4605  for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4606  if (!vxge_bVALn(vpath_mask, i, 1))
4607  continue;
4608  if (j >= vdev->no_of_vpath)
4609  break;
4610 
4611  vdev->vpaths[j].is_configured = 1;
4612  vdev->vpaths[j].device_id = i;
4613  vdev->vpaths[j].ring.driver_id = j;
4614  vdev->vpaths[j].vdev = vdev;
4615  vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4616  memcpy((u8 *)vdev->vpaths[j].macaddr,
4617  ll_config->device_hw_info.mac_addrs[i],
4618  ETH_ALEN);
4619 
4620  /* Initialize the mac address list header */
4621  INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4622 
4623  vdev->vpaths[j].mac_addr_cnt = 0;
4624  vdev->vpaths[j].mcast_addr_cnt = 0;
4625  j++;
4626  }
4628  vdev->max_config_port = max_config_port;
4629 
4630  vdev->vlan_tag_strip = vlan_tag_strip;
4631 
4632  /* map the hashing selector table to the configured vpaths */
4633  for (i = 0; i < vdev->no_of_vpath; i++)
4634  vdev->vpath_selector[i] = vpath_selector[i];
4635 
4636  macaddr = (u8 *)vdev->vpaths[0].macaddr;
4637 
4638  ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4639  ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4640  ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4641 
4642  vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4643  vdev->ndev->name, ll_config->device_hw_info.serial_number);
4644 
4645  vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4646  vdev->ndev->name, ll_config->device_hw_info.part_number);
4647 
4648  vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4649  vdev->ndev->name, ll_config->device_hw_info.product_desc);
4650 
4651  vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4652  vdev->ndev->name, macaddr);
4653 
4654  vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4655  vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4656 
4658  "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4659  ll_config->device_hw_info.fw_version.version,
4660  ll_config->device_hw_info.fw_date.date);
4661 
4662  if (new_device) {
4663  switch (ll_config->device_hw_info.function_mode) {
4666  "%s: Single Function Mode Enabled", vdev->ndev->name);
4667  break;
4670  "%s: Multi Function Mode Enabled", vdev->ndev->name);
4671  break;
4674  "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4675  break;
4678  "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4679  break;
4680  }
4681  }
4682 
4683  vxge_print_parm(vdev, vpath_mask);
4684 
4685  /* Store the fw version for ethttool option */
4686  strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4687  memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4688  memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4689 
4690  /* Copy the station mac address to the list */
4691  for (i = 0; i < vdev->no_of_vpath; i++) {
4692  entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4693  if (NULL == entry) {
4695  "%s: mac_addr_list : memory allocation failed",
4696  vdev->ndev->name);
4697  ret = -EPERM;
4698  goto _exit6;
4699  }
4700  macaddr = (u8 *)&entry->macaddr;
4701  memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4702  list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4703  vdev->vpaths[i].mac_addr_cnt = 1;
4704  }
4705 
4706  kfree(device_config);
4707 
4708  /*
4709  * INTA is shared in multi-function mode. This is unlike the INTA
4710  * implementation in MR mode, where each VH has its own INTA message.
4711  * - INTA is masked (disabled) as long as at least one function sets
4712  * its TITAN_MASK_ALL_INT.ALARM bit.
4713  * - INTA is unmasked (enabled) when all enabled functions have cleared
4714  * their own TITAN_MASK_ALL_INT.ALARM bit.
4715  * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4716  * Though this driver leaves the top level interrupts unmasked while
4717  * leaving the required module interrupt bits masked on exit, there
4718  * could be a rougue driver around that does not follow this procedure
4719  * resulting in a failure to generate interrupts. The following code is
4720  * present to prevent such a failure.
4721  */
4722 
4723  if (ll_config->device_hw_info.function_mode ==
4725  if (vdev->config.intr_type == INTA)
4727 
4728  vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4729  vdev->ndev->name, __func__, __LINE__);
4730 
4734 
4735  kfree(ll_config);
4736  return 0;
4737 
4738 _exit6:
4739  for (i = 0; i < vdev->no_of_vpath; i++)
4740  vxge_free_mac_add_list(&vdev->vpaths[i]);
4741 _exit5:
4742  vxge_device_unregister(hldev);
4743 _exit4:
4744  pci_set_drvdata(pdev, NULL);
4745  vxge_hw_device_terminate(hldev);
4746  pci_disable_sriov(pdev);
4747 _exit3:
4748  iounmap(attr.bar0);
4749 _exit2:
4750  pci_release_region(pdev, 0);
4751 _exit1:
4752  pci_disable_device(pdev);
4753 _exit0:
4754  kfree(ll_config);
4755  kfree(device_config);
4756  driver_config->config_dev_cnt--;
4757  driver_config->total_dev_cnt--;
4758  return ret;
4759 }
4760 
4767 static void __devexit vxge_remove(struct pci_dev *pdev)
4768 {
4769  struct __vxge_hw_device *hldev;
4770  struct vxgedev *vdev;
4771  int i;
4772 
4773  hldev = pci_get_drvdata(pdev);
4774  if (hldev == NULL)
4775  return;
4776 
4777  vdev = netdev_priv(hldev->ndev);
4778 
4779  vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4780  vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4781  __func__);
4782 
4783  for (i = 0; i < vdev->no_of_vpath; i++)
4784  vxge_free_mac_add_list(&vdev->vpaths[i]);
4785 
4786  vxge_device_unregister(hldev);
4787  pci_set_drvdata(pdev, NULL);
4788  /* Do not call pci_disable_sriov here, as it will break child devices */
4789  vxge_hw_device_terminate(hldev);
4790  iounmap(vdev->bar0);
4791  pci_release_region(pdev, 0);
4792  pci_disable_device(pdev);
4793  driver_config->config_dev_cnt--;
4794  driver_config->total_dev_cnt--;
4795 
4796  vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4797  __func__, __LINE__);
4798  vxge_debug_entryexit(vdev->level_trace, "%s:%d Exiting...", __func__,
4799  __LINE__);
4800 }
4801 
4802 static const struct pci_error_handlers vxge_err_handler = {
4803  .error_detected = vxge_io_error_detected,
4804  .slot_reset = vxge_io_slot_reset,
4805  .resume = vxge_io_resume,
4806 };
4807 
4808 static struct pci_driver vxge_driver = {
4809  .name = VXGE_DRIVER_NAME,
4810  .id_table = vxge_id_table,
4811  .probe = vxge_probe,
4812  .remove = __devexit_p(vxge_remove),
4813 #ifdef CONFIG_PM
4814  .suspend = vxge_pm_suspend,
4815  .resume = vxge_pm_resume,
4816 #endif
4817  .err_handler = &vxge_err_handler,
4818 };
4819 
4820 static int __init
4821 vxge_starter(void)
4822 {
4823  int ret = 0;
4824 
4825  pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4826  pr_info("Driver version: %s\n", DRV_VERSION);
4827 
4828  verify_bandwidth();
4829 
4830  driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4831  if (!driver_config)
4832  return -ENOMEM;
4833 
4834  ret = pci_register_driver(&vxge_driver);
4835  if (ret) {
4836  kfree(driver_config);
4837  goto err;
4838  }
4839 
4840  if (driver_config->config_dev_cnt &&
4841  (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4843  "%s: Configured %d of %d devices",
4844  VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4845  driver_config->total_dev_cnt);
4846 err:
4847  return ret;
4848 }
4849 
4850 static void __exit
4851 vxge_closer(void)
4852 {
4853  pci_unregister_driver(&vxge_driver);
4854  kfree(driver_config);
4855 }
4856 module_init(vxge_starter);
4857 module_exit(vxge_closer);