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vxge: set maximal number of default RSS queues
[linux-2.6.git] / drivers / net / ethernet / neterion / vxge / vxge-main.c
blob2fd1edbc5e0e1178db6a0ddf0c0b0eaac513bb95
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) = {
67 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
68 PCI_ANY_ID},
69 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
70 PCI_ANY_ID},
71 {0}
72 };
73
74 MODULE_DEVICE_TABLE(pci, vxge_id_table);
75
76 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
77 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
78 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
79 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
80 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
81 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
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
101 struct sk_buff *completed[NR_SKB_COMPLETED];
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;
137 vxge_hw_vpath_poll_rx(ring->handle);
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
160 vxge_debug_entryexit(VXGE_TRACE,
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
175 vxge_debug_entryexit(VXGE_TRACE,
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
183 vxge_debug_entryexit(VXGE_TRACE,
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 +
207 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
208 if (skb == NULL) {
209 vxge_debug_mem(VXGE_ERR,
210 "%s: out of memory to allocate SKB", dev->name);
211 ring->stats.skb_alloc_fail++;
212 return NULL;
213 }
214
215 vxge_debug_mem(VXGE_TRACE,
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;
224 vxge_debug_entryexit(VXGE_TRACE,
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;
236 dma_addr_t dma_addr;
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 }
250 vxge_debug_mem(VXGE_TRACE,
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;
257 vxge_debug_entryexit(VXGE_TRACE,
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 }
285 vxge_debug_entryexit(VXGE_TRACE,
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
309 vxge_debug_rx(VXGE_TRACE,
310 "%s: %s:%d skb protocol = %d",
311 ring->ndev->name, __func__, __LINE__, skb->protocol);
312
313 if (ext_info->vlan &&
314 ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
315 __vlan_hwaccel_put_tag(skb, ext_info->vlan);
316 napi_gro_receive(ring->napi_p, skb);
317
318 vxge_debug_entryexit(VXGE_TRACE,
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;
362 dma_addr_t data_dma;
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
378 vxge_debug_rx(VXGE_TRACE,
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
387 vxge_debug_rx(VXGE_TRACE,
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++;
402 vxge_debug_rx(VXGE_TRACE,
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 +
452 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
453 if (skb_up != NULL) {
454 skb_reserve(skb_up,
455 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
456
457 pci_dma_sync_single_for_cpu(ring->pdev,
458 data_dma, data_size,
459 PCI_DMA_FROMDEVICE);
460
461 vxge_debug_mem(VXGE_TRACE,
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);
478 vxge_debug_rx(VXGE_ERR,
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)
491 skb->ip_summed = CHECKSUM_UNNECESSARY;
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
526 vxge_debug_entryexit(VXGE_TRACE,
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
549 vxge_debug_entryexit(VXGE_TRACE,
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
563 vxge_debug_tx(VXGE_TRACE,
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);
569 vxge_debug_tx(VXGE_TRACE,
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++;
575 vxge_debug_tx(VXGE_ERR,
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
619 vxge_debug_entryexit(VXGE_TRACE,
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
666 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
667 return TRUE;
668
669 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
670 if (!new_mac_entry) {
671 vxge_debug_mem(VXGE_ERR,
672 "%s: memory allocation failed",
673 VXGE_DRIVER_NAME);
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 {
696 enum vxge_hw_status status = VXGE_HW_OK;
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
703 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
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) {
709 vxge_debug_init(VXGE_ERR,
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;
750 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
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
758 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
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,
773 vxge_hw_mgmt_reg_type_mrpcim,
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) {
780 vxge_debug_tx(VXGE_ERR,
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
792 /**
793 * vxge_xmit
794 * @skb : the socket buffer containing the Tx data.
795 * @dev : device pointer.
796 *
797 * This function is the Tx entry point of the driver. Neterion NIC supports
798 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
799 */
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)) {
822 vxge_debug_tx(VXGE_ERR,
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))) {
831 vxge_debug_tx(VXGE_ERR,
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) {
840 vxge_debug_tx(VXGE_ERR,
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
864 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
865 if (avail == 0) {
866 vxge_debug_tx(VXGE_ERR,
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)) {
880 vxge_debug_tx(VXGE_ERR,
881 "%s: Out of descriptors .", dev->name);
882 fifo->stats.txd_out_of_desc++;
883 goto _exit0;
884 }
885
886 vxge_debug_tx(VXGE_TRACE,
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,
899 PCI_DMA_TODEVICE);
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;
912 vxge_debug_tx(VXGE_TRACE,
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;
933 vxge_debug_tx(VXGE_TRACE,
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 <=
954 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
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,
962 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
963 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
964 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
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
1019 vxge_debug_entryexit(VXGE_TRACE,
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
1060 vxge_debug_entryexit(VXGE_TRACE,
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) {
1099 vxge_debug_init(VXGE_ERR,
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
1107 /**
1108 * vxge_set_multicast
1109 * @dev: pointer to the device structure
1110 *
1111 * Entry point for multicast address enable/disable
1112 * This function is a driver entry point which gets called by the kernel
1113 * whenever multicast addresses must be enabled/disabled. This also gets
1114 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1115 * determine, if multicast address must be enabled or if promiscuous mode
1116 * is to be disabled etc.
1117 */
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
1133 vxge_debug_entryexit(VXGE_TRACE,
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)
1171 status = vxge_hw_vpath_promisc_enable(
1172 vpath->handle);
1173 else
1174 status = vxge_hw_vpath_promisc_disable(
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;
1220 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1221 status = vxge_add_mac_addr(vdev, &mac_info);
1222 if (status != VXGE_HW_OK) {
1223 vxge_debug_init(VXGE_ERR,
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) {
1261 vxge_debug_init(VXGE_ERR,
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
1270 vxge_debug_entryexit(VXGE_TRACE,
1271 "%s:%d Exiting...", __func__, __LINE__);
1272 }
1273
1274 /**
1275 * vxge_set_mac_addr
1276 * @dev: pointer to the device structure
1277 *
1278 * Update entry "0" (default MAC addr)
1279 */
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
1363 vxge_hw_vpath_intr_enable(vpath->handle);
1364
1365 if (vdev->config.intr_type == INTA)
1366 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1367 else {
1368 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1369 alarm_msix_id);
1370
1371 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1372 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1373 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1374
1375 /* enable the alarm vector */
1376 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1377 VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1378 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1379 }
1380 }
1381
1382 /*
1383 * vxge_vpath_intr_disable
1384 * @vdev: pointer to vdev
1385 * @vp_id: vpath for which to disable the interrupts
1386 *
1387 * Disables the interrupts for the vpath
1388 */
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
1397 vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1398
1399 vxge_hw_vpath_intr_disable(vpath->handle);
1400
1401 if (vdev->config.intr_type == INTA)
1402 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1403 else {
1404 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1405 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1406 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1407
1408 /* disable the alarm vector */
1409 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1410 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1411 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1412 }
1413 }
1414
1415 /* list all mac addresses from DA table */
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) {
1426 vxge_debug_init(VXGE_ERR,
1427 "DA config list entry failed for vpath:%d",
1428 vpath->device_id);
1429 return status;
1430 }
1431
1432 while (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 =
1459 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1460 /* does this mac address already exist in da table? */
1461 status = vxge_search_mac_addr_in_da_table(vpath,
1462 &mac_info);
1463 if (status != VXGE_HW_OK) {
1464 /* Add this mac address to the DA table */
1465 status = vxge_hw_vpath_mac_addr_add(
1466 vpath->handle, mac_info.macaddr,
1467 mac_info.macmask,
1468 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1469 if (status != VXGE_HW_OK) {
1470 vxge_debug_init(VXGE_ERR,
1471 "DA add entry failed for vpath:%d",
1472 vpath->device_id);
1473 ((struct vxge_mac_addrs *)entry)->state
1474 = VXGE_LL_MAC_ADDR_IN_LIST;
1475 }
1476 }
1477 }
1478 }
1479
1480 return status;
1481 }
1482
1483 /* Store all vlan ids from the list to the vid table */
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
1494 for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1495 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1496
1497 return status;
1498 }
1499
1500 /*
1501 * vxge_reset_vpath
1502 * @vdev: pointer to vdev
1503 * @vp_id: vpath to reset
1504 *
1505 * Resets the vpath
1506 */
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) &&
1524 vxge_hw_vpath_recover_from_reset(vpath->handle)
1525 != VXGE_HW_OK) {
1526 vxge_debug_init(VXGE_ERR,
1527 "vxge_hw_vpath_recover_from_reset"
1528 "failed for vpath:%d", vp_id);
1529 return status;
1530 }
1531 } else {
1532 vxge_debug_init(VXGE_ERR,
1533 "vxge_hw_vpath_reset failed for"
1534 "vpath:%d", vp_id);
1535 return status;
1536 }
1537 } else
1538 return VXGE_HW_FAIL;
1539
1540 vxge_restore_vpath_mac_addr(vpath);
1541 vxge_restore_vpath_vid_table(vpath);
1542
1543 /* Enable all broadcast */
1544 vxge_hw_vpath_bcast_enable(vpath->handle);
1545
1546 /* Enable all multicast */
1547 if (vdev->all_multi_flg) {
1548 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1549 if (status != VXGE_HW_OK)
1550 vxge_debug_init(VXGE_ERR,
1551 "%s:%d Enabling multicast failed",
1552 __func__, __LINE__);
1553 }
1554
1555 /* Enable the interrupts */
1556 vxge_vpath_intr_enable(vdev, vp_id);
1557
1558 smp_wmb();
1559
1560 /* Enable the flow of traffic through the vpath */
1561 vxge_hw_vpath_enable(vpath->handle);
1562
1563 smp_wmb();
1564 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1565 vpath->ring.last_status = VXGE_HW_OK;
1566
1567 /* Vpath reset done */
1568 clear_bit(vp_id, &vdev->vp_reset);
1569
1570 /* Start the vpath queue */
1571 if (netif_tx_queue_stopped(vpath->fifo.txq))
1572 netif_tx_wake_queue(vpath->fifo.txq);
1573
1574 return ret;
1575 }
1576
1577 /* Configure CI */
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;
1588 vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1589 }
1590 }
1591
1592 /* Enable CI for TTI */
1593 for (i = 0; i < vdev->no_of_vpath; i++) {
1594 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1595 vxge_hw_vpath_tti_ci_set(hw_fifo);
1596 /*
1597 * For Inta (with or without napi), Set CI ON for only one
1598 * vpath. (Have only one free running timer).
1599 */
1600 if ((vdev->config.intr_type == INTA) && (i == 0))
1601 break;
1602 }
1603
1604 return;
1605 }
1606
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 */
1620 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1621 return 0;
1622 }
1623
1624 if (event == VXGE_LL_FULL_RESET) {
1625 netif_carrier_off(vdev->ndev);
1626
1627 /* wait for all the vpath reset to complete */
1628 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1629 while (test_bit(vp_id, &vdev->vp_reset))
1630 msleep(50);
1631 }
1632
1633 netif_carrier_on(vdev->ndev);
1634
1635 /* if execution mode is set to debug, don't reset the adapter */
1636 if (unlikely(vdev->exec_mode)) {
1637 vxge_debug_init(VXGE_ERR,
1638 "%s: execution mode is debug, returning..",
1639 vdev->ndev->name);
1640 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1641 netif_tx_stop_all_queues(vdev->ndev);
1642 return 0;
1643 }
1644 }
1645
1646 if (event == VXGE_LL_FULL_RESET) {
1647 vxge_hw_device_wait_receive_idle(vdev->devh);
1648 vxge_hw_device_intr_disable(vdev->devh);
1649
1650 switch (vdev->cric_err_event) {
1651 case VXGE_HW_EVENT_UNKNOWN:
1652 netif_tx_stop_all_queues(vdev->ndev);
1653 vxge_debug_init(VXGE_ERR,
1654 "fatal: %s: Disabling device due to"
1655 "unknown error",
1656 vdev->ndev->name);
1657 ret = -EPERM;
1658 goto out;
1659 case VXGE_HW_EVENT_RESET_START:
1660 break;
1661 case VXGE_HW_EVENT_RESET_COMPLETE:
1662 case VXGE_HW_EVENT_LINK_DOWN:
1663 case VXGE_HW_EVENT_LINK_UP:
1664 case VXGE_HW_EVENT_ALARM_CLEARED:
1665 case VXGE_HW_EVENT_ECCERR:
1666 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1667 ret = -EPERM;
1668 goto out;
1669 case VXGE_HW_EVENT_FIFO_ERR:
1670 case VXGE_HW_EVENT_VPATH_ERR:
1671 break;
1672 case VXGE_HW_EVENT_CRITICAL_ERR:
1673 netif_tx_stop_all_queues(vdev->ndev);
1674 vxge_debug_init(VXGE_ERR,
1675 "fatal: %s: Disabling device due to"
1676 "serious error",
1677 vdev->ndev->name);
1678 /* SOP or device reset required */
1679 /* This event is not currently used */
1680 ret = -EPERM;
1681 goto out;
1682 case VXGE_HW_EVENT_SERR:
1683 netif_tx_stop_all_queues(vdev->ndev);
1684 vxge_debug_init(VXGE_ERR,
1685 "fatal: %s: Disabling device due to"
1686 "serious error",
1687 vdev->ndev->name);
1688 ret = -EPERM;
1689 goto out;
1690 case VXGE_HW_EVENT_SRPCIM_SERR:
1691 case VXGE_HW_EVENT_MRPCIM_SERR:
1692 ret = -EPERM;
1693 goto out;
1694 case VXGE_HW_EVENT_SLOT_FREEZE:
1695 netif_tx_stop_all_queues(vdev->ndev);
1696 vxge_debug_init(VXGE_ERR,
1697 "fatal: %s: Disabling device due to"
1698 "slot freeze",
1699 vdev->ndev->name);
1700 ret = -EPERM;
1701 goto out;
1702 default:
1703 break;
1704
1705 }
1706 }
1707
1708 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1709 netif_tx_stop_all_queues(vdev->ndev);
1710
1711 if (event == VXGE_LL_FULL_RESET) {
1712 status = vxge_reset_all_vpaths(vdev);
1713 if (status != VXGE_HW_OK) {
1714 vxge_debug_init(VXGE_ERR,
1715 "fatal: %s: can not reset vpaths",
1716 vdev->ndev->name);
1717 ret = -EPERM;
1718 goto out;
1719 }
1720 }
1721
1722 if (event == VXGE_LL_COMPL_RESET) {
1723 for (i = 0; i < vdev->no_of_vpath; i++)
1724 if (vdev->vpaths[i].handle) {
1725 if (vxge_hw_vpath_recover_from_reset(
1726 vdev->vpaths[i].handle)
1727 != VXGE_HW_OK) {
1728 vxge_debug_init(VXGE_ERR,
1729 "vxge_hw_vpath_recover_"
1730 "from_reset failed for vpath: "
1731 "%d", i);
1732 ret = -EPERM;
1733 goto out;
1734 }
1735 } else {
1736 vxge_debug_init(VXGE_ERR,
1737 "vxge_hw_vpath_reset failed for "
1738 "vpath:%d", i);
1739 ret = -EPERM;
1740 goto out;
1741 }
1742 }
1743
1744 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1745 /* Reprogram the DA table with populated mac addresses */
1746 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1747 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1748 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1749 }
1750
1751 /* enable vpath interrupts */
1752 for (i = 0; i < vdev->no_of_vpath; i++)
1753 vxge_vpath_intr_enable(vdev, i);
1754
1755 vxge_hw_device_intr_enable(vdev->devh);
1756
1757 smp_wmb();
1758
1759 /* Indicate card up */
1760 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1761
1762 /* Get the traffic to flow through the vpaths */
1763 for (i = 0; i < vdev->no_of_vpath; i++) {
1764 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1765 smp_wmb();
1766 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1767 }
1768
1769 netif_tx_wake_all_queues(vdev->ndev);
1770 }
1771
1772 /* configure CI */
1773 vxge_config_ci_for_tti_rti(vdev);
1774
1775 out:
1776 vxge_debug_entryexit(VXGE_TRACE,
1777 "%s:%d Exiting...", __func__, __LINE__);
1778
1779 /* Indicate reset done */
1780 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1781 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1782 return ret;
1783 }
1784
1785 /*
1786 * vxge_reset
1787 * @vdev: pointer to ll device
1788 *
1789 * driver may reset the chip on events of serr, eccerr, etc
1790 */
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
1801 /**
1802 * vxge_poll - Receive handler when Receive Polling is used.
1803 * @dev: pointer to the device structure.
1804 * @budget: Number of packets budgeted to be processed in this iteration.
1805 *
1806 * This function comes into picture only if Receive side is being handled
1807 * through polling (called NAPI in linux). It mostly does what the normal
1808 * Rx interrupt handler does in terms of descriptor and packet processing
1809 * but not in an interrupt context. Also it will process a specified number
1810 * of packets at most in one iteration. This value is passed down by the
1811 * kernel as the function argument 'budget'.
1812 */
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;
1821 vxge_hw_vpath_poll_rx(ring->handle);
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 */
1828 vxge_hw_channel_msix_unmask(
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;
1854 vxge_hw_vpath_poll_rx(ring->handle);
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 */
1866 vxge_hw_device_unmask_all(hldev);
1867 vxge_hw_device_flush_io(hldev);
1868 }
1869
1870 return pkts_processed;
1871 }
1872
1873 #ifdef CONFIG_NET_POLL_CONTROLLER
1874 /**
1875 * vxge_netpoll - netpoll event handler entry point
1876 * @dev : pointer to the device structure.
1877 * Description:
1878 * This function will be called by upper layer to check for events on the
1879 * interface in situations where interrupts are disabled. It is used for
1880 * specific in-kernel networking tasks, such as remote consoles and kernel
1881 * debugging over the network (example netdump in RedHat).
1882 */
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);
1896 vxge_hw_device_clear_tx_rx(hldev);
1897
1898 vxge_hw_device_clear_tx_rx(hldev);
1899 VXGE_COMPLETE_ALL_RX(vdev);
1900 VXGE_COMPLETE_ALL_TX(vdev);
1901
1902 enable_irq(irq);
1903
1904 vxge_debug_entryexit(VXGE_TRACE,
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 */
1929 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1930 vdev->no_of_vpath,
1931 mtable, itable,
1932 vdev->config.rth_bkt_sz);
1933 if (status != VXGE_HW_OK) {
1934 vxge_debug_init(VXGE_ERR,
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) {
1962 vxge_debug_init(VXGE_ERR,
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 */
1973 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
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) &&
1984 vxge_hw_vpath_recover_from_reset(
1985 vpath->handle) != VXGE_HW_OK) {
1986 vxge_debug_init(VXGE_ERR,
1987 "vxge_hw_vpath_recover_"
1988 "from_reset failed for vpath: "
1989 "%d", i);
1990 return status;
1991 }
1992 } else {
1993 vxge_debug_init(VXGE_ERR,
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
2107 /**
2108 * adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2109 * if the interrupts are not within a range
2110 * @fifo: pointer to transmit fifo structure
2111 * Description: The function changes boundary timer and restriction timer
2112 * value depends on the traffic
2113 * Return Value: None
2114 */
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;
2122 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2123 hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2124 hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2125 vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2126 } else if (hw_fifo->rtimer != 0) {
2127 hw_fifo->rtimer = 0;
2128 vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2129 }
2130 fifo->interrupt_count = 0;
2131 }
2132 }
2133
2134 /**
2135 * adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2136 * if the interrupts are not within a range
2137 * @ring: pointer to receive ring structure
2138 * Description: The function increases of decreases the packet counts within
2139 * the ranges of traffic utilization, if the interrupts due to this ring are
2140 * not within a fixed range.
2141 * Return Value: Nothing
2142 */
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;
2150 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2151 hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2152 hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2153 vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2154 } else if (hw_ring->rtimer != 0) {
2155 hw_ring->rtimer = 0;
2156 vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
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 &
2196 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2197 vdev->vpaths_deployed >>
2198 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2199
2200 vxge_hw_device_clear_tx_rx(hldev);
2201 napi_schedule(&vdev->napi);
2202 vxge_debug_intr(VXGE_TRACE,
2203 "%s:%d Exiting...", __func__, __LINE__);
2204 return IRQ_HANDLED;
2205 } else
2206 vxge_hw_device_unmask_all(hldev);
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
2228 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2229 fifo->tx_vector_no);
2230
2231 vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2232 fifo->tx_vector_no);
2233
2234 VXGE_COMPLETE_VPATH_TX(fifo);
2235
2236 vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
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
2250 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2251 ring->rx_vector_no);
2252
2253 vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
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 *
2268 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_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 }
2287 vxge_debug_intr(VXGE_ERR,
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) {
2310 vxge_debug_init(VXGE_ERR,
2311 "%s: memory allocation failed",
2312 VXGE_DRIVER_NAME);
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",
2322 VXGE_DRIVER_NAME);
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) {
2351 vxge_debug_init(VXGE_ERR,
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 *
2401 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2402
2403 vpath->fifo.tx_vector_no = (vpath->device_id *
2404 VXGE_HW_VPATH_MSIX_ACTIVE);
2405
2406 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2407 VXGE_ALARM_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) {
2465 vxge_debug_init(VXGE_ERR,
2466 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2467 vxge_debug_init(VXGE_ERR,
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) {
2515 vxge_debug_init(VXGE_ERR,
2516 "%s: MSIX - %d Registration failed",
2517 vdev->ndev->name, intr_cnt);
2518 vxge_rem_msix_isr(vdev);
2519 vdev->config.intr_type = INTA;
2520 vxge_debug_init(VXGE_ERR,
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 *
2530 VXGE_HW_VPATH_MSIX_ACTIVE;
2531 vxge_hw_vpath_msix_unmask(
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) {
2555 vxge_debug_init(VXGE_ERR,
2556 "%s: MSIX - %d Registration failed",
2557 vdev->ndev->name, intr_cnt);
2558 vxge_rem_msix_isr(vdev);
2559 vdev->config.intr_type = INTA;
2560 vxge_debug_init(VXGE_ERR,
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 *
2567 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_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);
2579 vxge_hw_device_set_intr_type(vdev->devh,
2580 VXGE_HW_INTR_MODE_IRQLINE);
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) {
2588 vxge_debug_init(VXGE_ERR,
2589 "%s %s-%d: ISR registration failed",
2590 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2591 return -ENODEV;
2592 }
2593 vxge_debug_init(VXGE_TRACE,
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)) {
2613 vxge_hw_device_unmask_all(vdev->devh);
2614 vxge_hw_device_flush_io(vdev->devh);
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,
2665 netdev_features_t features)
2666 {
2667 netdev_features_t changed = dev->features ^ features;
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
2699 /**
2700 * vxge_open
2701 * @dev: pointer to the device structure.
2702 *
2703 * This function is the open entry point of the driver. It mainly calls a
2704 * function to allocate Rx buffers and inserts them into the buffer
2705 * descriptors and then enables the Rx part of the NIC.
2706 * Return value: '0' on success and an appropriate (-)ve integer as
2707 * defined in errno.h file on failure.
2708 */
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
2719 vxge_debug_entryexit(VXGE_TRACE,
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) {
2733 vxge_debug_init(VXGE_ERR,
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) {
2743 vxge_debug_init(VXGE_ERR,
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) {
2771 vxge_debug_init(VXGE_ERR,
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) {
2787 vxge_debug_init(VXGE_ERR,
2788 "%s: fatal: can not set new MTU", dev->name);
2789 ret = -EPERM;
2790 goto out2;
2791 }
2792 }
2793
2794 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2795 vxge_debug_init(vdev->level_trace,
2796 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2797 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
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)
2810 vxge_debug_init(VXGE_ERR,
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++)
2822 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2823
2824 vxge_hw_mgmt_reg_write(vdev->devh,
2825 vxge_hw_mgmt_reg_type_mrpcim,
2826 0,
2827 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2828 rxmac_authorize_all_addr),
2829 val64);
2830
2831 vxge_hw_mgmt_reg_write(vdev->devh,
2832 vxge_hw_mgmt_reg_type_mrpcim,
2833 0,
2834 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
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)
2845 vxge_debug_init(VXGE_ERR,
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)
2851 vxge_debug_init(VXGE_ERR,
2852 "%s : Can not enable mcast for vpath "
2853 "id %d", dev->name, i);
2854 }
2855 }
2856
2857 vxge_hw_device_setpause_data(vdev->devh, 0,
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
2870 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
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
2880 vxge_hw_device_intr_enable(vdev->devh);
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();
2889 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
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:
2913 vxge_debug_entryexit(VXGE_TRACE,
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. */
2962 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
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,
2969 vxge_hw_mgmt_reg_type_mrpcim,
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,
2978 vxge_hw_mgmt_reg_type_mrpcim,
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 */
2987 vxge_hw_mgmt_reg_write(vdev->devh,
2988 vxge_hw_mgmt_reg_type_mrpcim,
2989 0,
2990 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2991 rxmac_authorize_all_addr),
2992 0);
2993
2994 vxge_hw_mgmt_reg_write(vdev->devh,
2995 vxge_hw_mgmt_reg_type_mrpcim,
2996 0,
2997 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2998 rxmac_authorize_all_vid),
2999 0);
3000
3001 smp_wmb();
3002 }
3003
3004 if (vdev->titan1)
3005 del_timer_sync(&vdev->vp_lockup_timer);
3006
3007 del_timer_sync(&vdev->vp_reset_timer);
3008
3009 if (do_io)
3010 vxge_hw_device_wait_receive_idle(hldev);
3011
3012 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
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)
3028 vxge_hw_device_intr_disable(vdev->devh);
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
3039 vxge_debug_entryexit(VXGE_TRACE,
3040 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
3041
3042 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3043
3044 return 0;
3045 }
3046
3047 /**
3048 * vxge_close
3049 * @dev: device pointer.
3050 *
3051 * This is the stop entry point of the driver. It needs to undo exactly
3052 * whatever was done by the open entry point, thus it's usually referred to
3053 * as the close function.Among other things this function mainly stops the
3054 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3055 * Return value: '0' on success and an appropriate (-)ve integer as
3056 * defined in errno.h file on failure.
3057 */
3058 static int vxge_close(struct net_device *dev)
3059 {
3060 do_vxge_close(dev, 1);
3061 return 0;
3062 }
3063
3064 /**
3065 * vxge_change_mtu
3066 * @dev: net device pointer.
3067 * @new_mtu :the new MTU size for the device.
3068 *
3069 * A driver entry point to change MTU size for the device. Before changing
3070 * the MTU the device must be stopped.
3071 */
3072 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3073 {
3074 struct vxgedev *vdev = netdev_priv(dev);
3075
3076 vxge_debug_entryexit(vdev->level_trace,
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
3093 vxge_debug_init(vdev->level_trace,
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
3105 vxge_debug_init(vdev->level_trace,
3106 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3107
3108 vxge_debug_entryexit(vdev->level_trace,
3109 "%s:%d Exiting...", __func__, __LINE__);
3110
3111 return 0;
3112 }
3113
3114 /**
3115 * vxge_get_stats64
3116 * @dev: pointer to the device structure
3117 * @stats: pointer to struct rtnl_link_stats64
3118 *
3119 */
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(&rxstats->syncp);
3135
3136 packets = rxstats->rx_frms;
3137 multicast = rxstats->rx_mcast;
3138 bytes = rxstats->rx_bytes;
3139 } while (u64_stats_fetch_retry(&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(&txstats->syncp);
3150
3151 packets = txstats->tx_frms;
3152 bytes = txstats->tx_bytes;
3153 } while (u64_stats_fetch_retry(&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 |
3174 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3175 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3176
3177 status = vxge_hw_mgmt_reg_write(devh,
3178 vxge_hw_mgmt_reg_type_mrpcim,
3179 0,
3180 offsetof(struct vxge_hw_mrpcim_reg,
3181 xmac_timestamp),
3182 val64);
3183 vxge_hw_device_flush_io(devh);
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:
3217 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3218 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3219 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3220 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3221 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3222 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3223 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3224 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3225 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3226 case HWTSTAMP_FILTER_PTP_V2_EVENT:
3227 case HWTSTAMP_FILTER_PTP_V2_SYNC:
3228 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
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
3249 /**
3250 * vxge_ioctl
3251 * @dev: Device pointer.
3252 * @ifr: An IOCTL specific structure, that can contain a pointer to
3253 * a proprietary structure used to pass information to the driver.
3254 * @cmd: This is used to distinguish between the different commands that
3255 * can be passed to the IOCTL functions.
3256 *
3257 * Entry point for the Ioctl.
3258 */
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
3277 /**
3278 * vxge_tx_watchdog
3279 * @dev: pointer to net device structure
3280 *
3281 * Watchdog for transmit side.
3282 * This function is triggered if the Tx Queue is stopped
3283 * for a pre-defined amount of time when the Interface is still up.
3284 */
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
3293 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3294
3295 schedule_work(&vdev->reset_task);
3296 vxge_debug_entryexit(VXGE_TRACE,
3297 "%s:%d Exiting...", __func__, __LINE__);
3298 }
3299
3300 /**
3301 * vxge_vlan_rx_add_vid
3302 * @dev: net device pointer.
3303 * @vid: vid
3304 *
3305 * Add the vlan id to the devices vlan id table
3306 */
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
3325 /**
3326 * vxge_vlan_rx_add_vid
3327 * @dev: net device pointer.
3328 * @vid: vid
3329 *
3330 * Remove the vlan id from the device's vlan id table
3331 */
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 }
3348 vxge_debug_entryexit(VXGE_TRACE,
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) {
3392 vxge_debug_init(
3393 vxge_hw_device_trace_level_get(hldev),
3394 "%s : device allocation failed", __func__);
3395 ret = -ENODEV;
3396 goto _out0;
3397 }
3398
3399 vxge_debug_entryexit(
3400 vxge_hw_device_trace_level_get(hldev),
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
3416 ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3417 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3418 NETIF_F_TSO | NETIF_F_TSO6 |
3419 NETIF_F_HW_VLAN_TX;
3420 if (vdev->config.rth_steering != NO_STEERING)
3421 ndev->hw_features |= NETIF_F_RXHASH;
3422
3423 ndev->features |= ndev->hw_features |
3424 NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER;
3425
3426
3427 ndev->netdev_ops = &vxge_netdev_ops;
3428
3429 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3430 INIT_WORK(&vdev->reset_task, vxge_reset);
3431
3432 vxge_initialize_ethtool_ops(ndev);
3433
3434 /* Allocate memory for vpath */
3435 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3436 no_of_vpath, GFP_KERNEL);
3437 if (!vdev->vpaths) {
3438 vxge_debug_init(VXGE_ERR,
3439 "%s: vpath memory allocation failed",
3440 vdev->ndev->name);
3441 ret = -ENOMEM;
3442 goto _out1;
3443 }
3444
3445 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3446 "%s : checksuming enabled", __func__);
3447
3448 if (high_dma) {
3449 ndev->features |= NETIF_F_HIGHDMA;
3450 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3451 "%s : using High DMA", __func__);
3452 }
3453
3454 ret = register_netdev(ndev);
3455 if (ret) {
3456 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
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
3471 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
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,
3481 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3482 0,
3483 0,
3484 &stat);
3485
3486 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3487 vxge_debug_init(
3488 vxge_hw_device_trace_level_get(hldev),
3489 "%s: device stats clear returns"
3490 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3491
3492 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
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_sync(&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
3555 vxge_debug_entryexit(vdev->level_trace,
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) {
3571 vxge_debug_init(VXGE_ERR,
3572 "%s: Slot is frozen", vdev->ndev->name);
3573 } else if (type == VXGE_HW_EVENT_SERR) {
3574 vxge_debug_init(VXGE_ERR,
3575 "%s: Encountered Serious Error",
3576 vdev->ndev->name);
3577 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3578 vxge_debug_init(VXGE_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))
3586 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3587 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3588 vxge_hw_device_mask_all(hldev);
3589 if (unlikely(vdev->exec_mode))
3590 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3591 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3592 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3593
3594 if (unlikely(vdev->exec_mode))
3595 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
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
3609 vxge_debug_entryexit(vdev->level_trace,
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) {
3662 vxge_debug_init(VXGE_ERR,
3663 "%s: Assigning equal bandwidth to all the vpaths",
3664 VXGE_DRIVER_NAME);
3665 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3666 VXGE_HW_MAX_VIRTUAL_PATHS;
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 =
3691 netif_get_num_default_rss_queues();
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) {
3712 vxge_debug_ll_config(VXGE_TRACE,
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)) {
3729 vxge_debug_ll_config(VXGE_TRACE,
3730 "%s: vpath: %d is not available",
3731 VXGE_DRIVER_NAME, i);
3732 continue;
3733 } else {
3734 vxge_debug_ll_config(VXGE_TRACE,
3735 "%s: vpath: %d available",
3736 VXGE_DRIVER_NAME, i);
3737 no_of_vpaths++;
3738 }
3739 } else {
3740 vxge_debug_ll_config(VXGE_TRACE,
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 =
3749 VXGE_HW_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 =
3753 VXGE_HW_MIN_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 =
3763 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3764
3765 /* Configure tti properties */
3766 device_config->vp_config[i].tti.intr_enable =
3767 VXGE_HW_TIM_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 =
3773 VXGE_HW_TIM_TIMER_AC_ENABLE;
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 =
3779 VXGE_HW_TIM_TIMER_CI_DISABLE;
3780
3781 device_config->vp_config[i].tti.timer_ri_en =
3782 VXGE_HW_TIM_TIMER_RI_DISABLE;
3783
3784 device_config->vp_config[i].tti.util_sel =
3785 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
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 =
3803 VXGE_HW_RING_ENABLE;
3804
3805 device_config->vp_config[i].ring.ring_blocks =
3806 VXGE_HW_DEF_RING_BLOCKS;
3807
3808 device_config->vp_config[i].ring.buffer_mode =
3809 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3810
3811 device_config->vp_config[i].ring.rxds_limit =
3812 VXGE_HW_DEF_RING_RXDS_LIMIT;
3813
3814 device_config->vp_config[i].ring.scatter_mode =
3815 VXGE_HW_RING_SCATTER_MODE_A;
3816
3817 /* Configure rti properties */
3818 device_config->vp_config[i].rti.intr_enable =
3819 VXGE_HW_TIM_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 =
3825 VXGE_HW_TIM_TIMER_AC_ENABLE;
3826
3827 device_config->vp_config[i].rti.timer_ci_en =
3828 VXGE_HW_TIM_TIMER_CI_DISABLE;
3829
3830 device_config->vp_config[i].rti.timer_ri_en =
3831 VXGE_HW_TIM_TIMER_RI_DISABLE;
3832
3833 device_config->vp_config[i].rti.util_sel =
3834 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3835
3836 device_config->vp_config[i].rti.urange_a =
3837 RTI_RX_URANGE_A;
3838 device_config->vp_config[i].rti.urange_b =
3839 RTI_RX_URANGE_B;
3840 device_config->vp_config[i].rti.urange_c =
3841 RTI_RX_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 =
3868 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3869
3870 device_config->dma_blockpool_max =
3871 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
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
3877 vxge_debug_init(VXGE_ERR,
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
3919 vxge_debug_init(VXGE_TRACE,
3920 "%s: %d Vpath(s) opened",
3921 vdev->ndev->name, vdev->no_of_vpath);
3922
3923 switch (vdev->config.intr_type) {
3924 case INTA:
3925 vxge_debug_init(VXGE_TRACE,
3926 "%s: Interrupt type INTA", vdev->ndev->name);
3927 break;
3928
3929 case MSI_X:
3930 vxge_debug_init(VXGE_TRACE,
3931 "%s: Interrupt type MSI-X", vdev->ndev->name);
3932 break;
3933 }
3934
3935 if (vdev->config.rth_steering) {
3936 vxge_debug_init(VXGE_TRACE,
3937 "%s: RTH steering enabled for TCP_IPV4",
3938 vdev->ndev->name);
3939 } else {
3940 vxge_debug_init(VXGE_TRACE,
3941 "%s: RTH steering disabled", vdev->ndev->name);
3942 }
3943
3944 switch (vdev->config.tx_steering_type) {
3945 case NO_STEERING:
3946 vxge_debug_init(VXGE_TRACE,
3947 "%s: Tx steering disabled", vdev->ndev->name);
3948 break;
3949 case TX_PRIORITY_STEERING:
3950 vxge_debug_init(VXGE_TRACE,
3951 "%s: Unsupported tx steering option",
3952 vdev->ndev->name);
3953 vxge_debug_init(VXGE_TRACE,
3954 "%s: Tx steering disabled", vdev->ndev->name);
3955 vdev->config.tx_steering_type = 0;
3956 break;
3957 case TX_VLAN_STEERING:
3958 vxge_debug_init(VXGE_TRACE,
3959 "%s: Unsupported tx steering option",
3960 vdev->ndev->name);
3961 vxge_debug_init(VXGE_TRACE,
3962 "%s: Tx steering disabled", vdev->ndev->name);
3963 vdev->config.tx_steering_type = 0;
3964 break;
3965 case TX_MULTIQ_STEERING:
3966 vxge_debug_init(VXGE_TRACE,
3967 "%s: Tx multiqueue steering enabled",
3968 vdev->ndev->name);
3969 break;
3970 case TX_PORT_STEERING:
3971 vxge_debug_init(VXGE_TRACE,
3972 "%s: Tx port steering enabled",
3973 vdev->ndev->name);
3974 break;
3975 default:
3976 vxge_debug_init(VXGE_ERR,
3977 "%s: Unsupported tx steering type",
3978 vdev->ndev->name);
3979 vxge_debug_init(VXGE_TRACE,
3980 "%s: Tx steering disabled", vdev->ndev->name);
3981 vdev->config.tx_steering_type = 0;
3982 }
3983
3984 if (vdev->config.addr_learn_en)
3985 vxge_debug_init(VXGE_TRACE,
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;
3991 vxge_debug_ll_config(VXGE_TRACE,
3992 "%s: MTU size - %d", vdev->ndev->name,
3993 ((vdev->devh))->
3994 config.vp_config[i].mtu);
3995 vxge_debug_init(VXGE_TRACE,
3996 "%s: VLAN tag stripping %s", vdev->ndev->name,
3997 ((vdev->devh))->
3998 config.vp_config[i].rpa_strip_vlan_tag
3999 ? "Enabled" : "Disabled");
4000 vxge_debug_ll_config(VXGE_TRACE,
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 /**
4010 * vxge_pm_suspend - vxge power management suspend entry point
4011 *
4012 */
4013 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4014 {
4015 return -ENOSYS;
4016 }
4017 /**
4018 * vxge_pm_resume - vxge power management resume entry point
4019 *
4020 */
4021 static int vxge_pm_resume(struct pci_dev *pdev)
4022 {
4023 return -ENOSYS;
4024 }
4025
4026 #endif
4027
4028 /**
4029 * vxge_io_error_detected - called when PCI error is detected
4030 * @pdev: Pointer to PCI device
4031 * @state: The current pci connection state
4032 *
4033 * This function is called after a PCI bus error affecting
4034 * this device has been detected.
4035 */
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)
4045 return PCI_ERS_RESULT_DISCONNECT;
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
4054 return PCI_ERS_RESULT_NEED_RESET;
4055 }
4056
4057 /**
4058 * vxge_io_slot_reset - called after the pci bus has been reset.
4059 * @pdev: Pointer to PCI device
4060 *
4061 * Restart the card from scratch, as if from a cold-boot.
4062 * At this point, the card has exprienced a hard reset,
4063 * followed by fixups by BIOS, and has its config space
4064 * set up identically to what it was at cold boot.
4065 */
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");
4075 return PCI_ERS_RESULT_DISCONNECT;
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
4084 /**
4085 * vxge_io_resume - called when traffic can start flowing again.
4086 * @pdev: Pointer to PCI device
4087 *
4088 * This callback is called when the error recovery driver tells
4089 * us that its OK to resume normal operation.
4090 */
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) {
4112 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4113 case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4114 num_functions = 8;
4115 break;
4116 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4117 num_functions = 1;
4118 break;
4119 case VXGE_HW_FUNCTION_MODE_SRIOV:
4120 case VXGE_HW_FUNCTION_MODE_MRIOV:
4121 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4122 num_functions = 17;
4123 break;
4124 case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4125 num_functions = 4;
4126 break;
4127 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4128 num_functions = 2;
4129 break;
4130 case VXGE_HW_FUNCTION_MODE_MRIOV_8:
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) {
4155 vxge_debug_init(VXGE_ERR,
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) {
4165 vxge_debug_init(VXGE_ERR,
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",
4225 VXGE_DRIVER_NAME);
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
4261 if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
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.\n"
4265 "Please get the latest version from "
4266 "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE",
4267 VXGE_DRIVER_NAME, maj, min, bld);
4268 return -EINVAL;
4269 }
4270
4271 return ret;
4272 }
4273
4274 static int __devinit is_sriov_initialized(struct pci_dev *pdev)
4275 {
4276 int pos;
4277 u16 ctrl;
4278
4279 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4280 if (pos) {
4281 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4282 if (ctrl & PCI_SRIOV_CTRL_VFE)
4283 return 1;
4284 }
4285 return 0;
4286 }
4287
4288 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4289 .link_up = vxge_callback_link_up,
4290 .link_down = vxge_callback_link_down,
4291 .crit_err = vxge_callback_crit_err,
4292 };
4293
4294 /**
4295 * vxge_probe
4296 * @pdev : structure containing the PCI related information of the device.
4297 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4298 * Description:
4299 * This function is called when a new PCI device gets detected and initializes
4300 * it.
4301 * Return value:
4302 * returns 0 on success and negative on failure.
4303 *
4304 */
4305 static int __devinit
4306 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4307 {
4308 struct __vxge_hw_device *hldev;
4309 enum vxge_hw_status status;
4310 int ret;
4311 int high_dma = 0;
4312 u64 vpath_mask = 0;
4313 struct vxgedev *vdev;
4314 struct vxge_config *ll_config = NULL;
4315 struct vxge_hw_device_config *device_config = NULL;
4316 struct vxge_hw_device_attr attr;
4317 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4318 u8 *macaddr;
4319 struct vxge_mac_addrs *entry;
4320 static int bus = -1, device = -1;
4321 u32 host_type;
4322 u8 new_device = 0;
4323 enum vxge_hw_status is_privileged;
4324 u32 function_mode;
4325 u32 num_vfs = 0;
4326
4327 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4328 attr.pdev = pdev;
4329
4330 /* In SRIOV-17 mode, functions of the same adapter
4331 * can be deployed on different buses
4332 */
4333 if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4334 !pdev->is_virtfn)
4335 new_device = 1;
4336
4337 bus = pdev->bus->number;
4338 device = PCI_SLOT(pdev->devfn);
4339
4340 if (new_device) {
4341 if (driver_config->config_dev_cnt &&
4342 (driver_config->config_dev_cnt !=
4343 driver_config->total_dev_cnt))
4344 vxge_debug_init(VXGE_ERR,
4345 "%s: Configured %d of %d devices",
4346 VXGE_DRIVER_NAME,
4347 driver_config->config_dev_cnt,
4348 driver_config->total_dev_cnt);
4349 driver_config->config_dev_cnt = 0;
4350 driver_config->total_dev_cnt = 0;
4351 }
4352
4353 /* Now making the CPU based no of vpath calculation
4354 * applicable for individual functions as well.
4355 */
4356 driver_config->g_no_cpus = 0;
4357 driver_config->vpath_per_dev = max_config_vpath;
4358
4359 driver_config->total_dev_cnt++;
4360 if (++driver_config->config_dev_cnt > max_config_dev) {
4361 ret = 0;
4362 goto _exit0;
4363 }
4364
4365 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4366 GFP_KERNEL);
4367 if (!device_config) {
4368 ret = -ENOMEM;
4369 vxge_debug_init(VXGE_ERR,
4370 "device_config : malloc failed %s %d",
4371 __FILE__, __LINE__);
4372 goto _exit0;
4373 }
4374
4375 ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4376 if (!ll_config) {
4377 ret = -ENOMEM;
4378 vxge_debug_init(VXGE_ERR,
4379 "device_config : malloc failed %s %d",
4380 __FILE__, __LINE__);
4381 goto _exit0;
4382 }
4383 ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4384 ll_config->intr_type = MSI_X;
4385 ll_config->napi_weight = NEW_NAPI_WEIGHT;
4386 ll_config->rth_steering = RTH_STEERING;
4387
4388 /* get the default configuration parameters */
4389 vxge_hw_device_config_default_get(device_config);
4390
4391 /* initialize configuration parameters */
4392 vxge_device_config_init(device_config, &ll_config->intr_type);
4393
4394 ret = pci_enable_device(pdev);
4395 if (ret) {
4396 vxge_debug_init(VXGE_ERR,
4397 "%s : can not enable PCI device", __func__);
4398 goto _exit0;
4399 }
4400
4401 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4402 vxge_debug_ll_config(VXGE_TRACE,
4403 "%s : using 64bit DMA", __func__);
4404
4405 high_dma = 1;
4406
4407 if (pci_set_consistent_dma_mask(pdev,
4408 DMA_BIT_MASK(64))) {
4409 vxge_debug_init(VXGE_ERR,
4410 "%s : unable to obtain 64bit DMA for "
4411 "consistent allocations", __func__);
4412 ret = -ENOMEM;
4413 goto _exit1;
4414 }
4415 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4416 vxge_debug_ll_config(VXGE_TRACE,
4417 "%s : using 32bit DMA", __func__);
4418 } else {
4419 ret = -ENOMEM;
4420 goto _exit1;
4421 }
4422
4423 ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4424 if (ret) {
4425 vxge_debug_init(VXGE_ERR,
4426 "%s : request regions failed", __func__);
4427 goto _exit1;
4428 }
4429
4430 pci_set_master(pdev);
4431
4432 attr.bar0 = pci_ioremap_bar(pdev, 0);
4433 if (!attr.bar0) {
4434 vxge_debug_init(VXGE_ERR,
4435 "%s : cannot remap io memory bar0", __func__);
4436 ret = -ENODEV;
4437 goto _exit2;
4438 }
4439 vxge_debug_ll_config(VXGE_TRACE,
4440 "pci ioremap bar0: %p:0x%llx",
4441 attr.bar0,
4442 (unsigned long long)pci_resource_start(pdev, 0));
4443
4444 status = vxge_hw_device_hw_info_get(attr.bar0,
4445 &ll_config->device_hw_info);
4446 if (status != VXGE_HW_OK) {
4447 vxge_debug_init(VXGE_ERR,
4448 "%s: Reading of hardware info failed."
4449 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4450 ret = -EINVAL;
4451 goto _exit3;
4452 }
4453
4454 vpath_mask = ll_config->device_hw_info.vpath_mask;
4455 if (vpath_mask == 0) {
4456 vxge_debug_ll_config(VXGE_TRACE,
4457 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4458 ret = -EINVAL;
4459 goto _exit3;
4460 }
4461
4462 vxge_debug_ll_config(VXGE_TRACE,
4463 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4464 (unsigned long long)vpath_mask);
4465
4466 function_mode = ll_config->device_hw_info.function_mode;
4467 host_type = ll_config->device_hw_info.host_type;
4468 is_privileged = __vxge_hw_device_is_privilaged(host_type,
4469 ll_config->device_hw_info.func_id);
4470
4471 /* Check how many vpaths are available */
4472 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4473 if (!((vpath_mask) & vxge_mBIT(i)))
4474 continue;
4475 max_vpath_supported++;
4476 }
4477
4478 if (new_device)
4479 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4480
4481 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4482 if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4483 (ll_config->intr_type != INTA)) {
4484 ret = pci_enable_sriov(pdev, num_vfs);
4485 if (ret)
4486 vxge_debug_ll_config(VXGE_ERR,
4487 "Failed in enabling SRIOV mode: %d\n", ret);
4488 /* No need to fail out, as an error here is non-fatal */
4489 }
4490
4491 /*
4492 * Configure vpaths and get driver configured number of vpaths
4493 * which is less than or equal to the maximum vpaths per function.
4494 */
4495 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4496 if (!no_of_vpath) {
4497 vxge_debug_ll_config(VXGE_ERR,
4498 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4499 ret = 0;
4500 goto _exit3;
4501 }
4502
4503 /* Setting driver callbacks */
4504 attr.uld_callbacks = &vxge_callbacks;
4505
4506 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4507 if (status != VXGE_HW_OK) {
4508 vxge_debug_init(VXGE_ERR,
4509 "Failed to initialize device (%d)", status);
4510 ret = -EINVAL;
4511 goto _exit3;
4512 }
4513
4514 if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4515 ll_config->device_hw_info.fw_version.minor,
4516 ll_config->device_hw_info.fw_version.build) >=
4517 VXGE_EPROM_FW_VER) {
4518 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4519
4520 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4521 if (status != VXGE_HW_OK) {
4522 vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4523 VXGE_DRIVER_NAME);
4524 /* This is a non-fatal error, continue */
4525 }
4526
4527 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4528 hldev->eprom_versions[i] = img[i].version;
4529 if (!img[i].is_valid)
4530 break;
4531 vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4532 "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4533 VXGE_EPROM_IMG_MAJOR(img[i].version),
4534 VXGE_EPROM_IMG_MINOR(img[i].version),
4535 VXGE_EPROM_IMG_FIX(img[i].version),
4536 VXGE_EPROM_IMG_BUILD(img[i].version));
4537 }
4538 }
4539
4540 /* if FCS stripping is not disabled in MAC fail driver load */
4541 status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4542 if (status != VXGE_HW_OK) {
4543 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4544 " failing driver load", VXGE_DRIVER_NAME);
4545 ret = -EINVAL;
4546 goto _exit4;
4547 }
4548
4549 /* Always enable HWTS. This will always cause the FCS to be invalid,
4550 * due to the fact that HWTS is using the FCS as the location of the
4551 * timestamp. The HW FCS checking will still correctly determine if
4552 * there is a valid checksum, and the FCS is being removed by the driver
4553 * anyway. So no fucntionality is being lost. Since it is always
4554 * enabled, we now simply use the ioctl call to set whether or not the
4555 * driver should be paying attention to the HWTS.
4556 */
4557 if (is_privileged == VXGE_HW_OK) {
4558 status = vxge_timestamp_config(hldev);
4559 if (status != VXGE_HW_OK) {
4560 vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4561 VXGE_DRIVER_NAME);
4562 ret = -EFAULT;
4563 goto _exit4;
4564 }
4565 }
4566
4567 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4568
4569 /* set private device info */
4570 pci_set_drvdata(pdev, hldev);
4571
4572 ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4573 ll_config->addr_learn_en = addr_learn_en;
4574 ll_config->rth_algorithm = RTH_ALG_JENKINS;
4575 ll_config->rth_hash_type_tcpipv4 = 1;
4576 ll_config->rth_hash_type_ipv4 = 0;
4577 ll_config->rth_hash_type_tcpipv6 = 0;
4578 ll_config->rth_hash_type_ipv6 = 0;
4579 ll_config->rth_hash_type_tcpipv6ex = 0;
4580 ll_config->rth_hash_type_ipv6ex = 0;
4581 ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4582 ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4583 ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4584
4585 ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4586 &vdev);
4587 if (ret) {
4588 ret = -EINVAL;
4589 goto _exit4;
4590 }
4591
4592 ret = vxge_probe_fw_update(vdev);
4593 if (ret)
4594 goto _exit5;
4595
4596 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4597 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4598 vxge_hw_device_trace_level_get(hldev));
4599
4600 /* set private HW device info */
4601 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4602 vdev->bar0 = attr.bar0;
4603 vdev->max_vpath_supported = max_vpath_supported;
4604 vdev->no_of_vpath = no_of_vpath;
4605
4606 /* Virtual Path count */
4607 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4608 if (!vxge_bVALn(vpath_mask, i, 1))
4609 continue;
4610 if (j >= vdev->no_of_vpath)
4611 break;
4612
4613 vdev->vpaths[j].is_configured = 1;
4614 vdev->vpaths[j].device_id = i;
4615 vdev->vpaths[j].ring.driver_id = j;
4616 vdev->vpaths[j].vdev = vdev;
4617 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4618 memcpy((u8 *)vdev->vpaths[j].macaddr,
4619 ll_config->device_hw_info.mac_addrs[i],
4620 ETH_ALEN);
4621
4622 /* Initialize the mac address list header */
4623 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4624
4625 vdev->vpaths[j].mac_addr_cnt = 0;
4626 vdev->vpaths[j].mcast_addr_cnt = 0;
4627 j++;
4628 }
4629 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4630 vdev->max_config_port = max_config_port;
4631
4632 vdev->vlan_tag_strip = vlan_tag_strip;
4633
4634 /* map the hashing selector table to the configured vpaths */
4635 for (i = 0; i < vdev->no_of_vpath; i++)
4636 vdev->vpath_selector[i] = vpath_selector[i];
4637
4638 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4639
4640 ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4641 ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4642 ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4643
4644 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4645 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4646
4647 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4648 vdev->ndev->name, ll_config->device_hw_info.part_number);
4649
4650 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4651 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4652
4653 vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4654 vdev->ndev->name, macaddr);
4655
4656 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4657 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4658
4659 vxge_debug_init(VXGE_TRACE,
4660 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4661 ll_config->device_hw_info.fw_version.version,
4662 ll_config->device_hw_info.fw_date.date);
4663
4664 if (new_device) {
4665 switch (ll_config->device_hw_info.function_mode) {
4666 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4667 vxge_debug_init(VXGE_TRACE,
4668 "%s: Single Function Mode Enabled", vdev->ndev->name);
4669 break;
4670 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4671 vxge_debug_init(VXGE_TRACE,
4672 "%s: Multi Function Mode Enabled", vdev->ndev->name);
4673 break;
4674 case VXGE_HW_FUNCTION_MODE_SRIOV:
4675 vxge_debug_init(VXGE_TRACE,
4676 "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4677 break;
4678 case VXGE_HW_FUNCTION_MODE_MRIOV:
4679 vxge_debug_init(VXGE_TRACE,
4680 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4681 break;
4682 }
4683 }
4684
4685 vxge_print_parm(vdev, vpath_mask);
4686
4687 /* Store the fw version for ethttool option */
4688 strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4689 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4690 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4691
4692 /* Copy the station mac address to the list */
4693 for (i = 0; i < vdev->no_of_vpath; i++) {
4694 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4695 if (NULL == entry) {
4696 vxge_debug_init(VXGE_ERR,
4697 "%s: mac_addr_list : memory allocation failed",
4698 vdev->ndev->name);
4699 ret = -EPERM;
4700 goto _exit6;
4701 }
4702 macaddr = (u8 *)&entry->macaddr;
4703 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4704 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4705 vdev->vpaths[i].mac_addr_cnt = 1;
4706 }
4707
4708 kfree(device_config);
4709
4710 /*
4711 * INTA is shared in multi-function mode. This is unlike the INTA
4712 * implementation in MR mode, where each VH has its own INTA message.
4713 * - INTA is masked (disabled) as long as at least one function sets
4714 * its TITAN_MASK_ALL_INT.ALARM bit.
4715 * - INTA is unmasked (enabled) when all enabled functions have cleared
4716 * their own TITAN_MASK_ALL_INT.ALARM bit.
4717 * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4718 * Though this driver leaves the top level interrupts unmasked while
4719 * leaving the required module interrupt bits masked on exit, there
4720 * could be a rougue driver around that does not follow this procedure
4721 * resulting in a failure to generate interrupts. The following code is
4722 * present to prevent such a failure.
4723 */
4724
4725 if (ll_config->device_hw_info.function_mode ==
4726 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4727 if (vdev->config.intr_type == INTA)
4728 vxge_hw_device_unmask_all(hldev);
4729
4730 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4731 vdev->ndev->name, __func__, __LINE__);
4732
4733 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4734 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4735 vxge_hw_device_trace_level_get(hldev));
4736
4737 kfree(ll_config);
4738 return 0;
4739
4740 _exit6:
4741 for (i = 0; i < vdev->no_of_vpath; i++)
4742 vxge_free_mac_add_list(&vdev->vpaths[i]);
4743 _exit5:
4744 vxge_device_unregister(hldev);
4745 _exit4:
4746 pci_set_drvdata(pdev, NULL);
4747 vxge_hw_device_terminate(hldev);
4748 pci_disable_sriov(pdev);
4749 _exit3:
4750 iounmap(attr.bar0);
4751 _exit2:
4752 pci_release_region(pdev, 0);
4753 _exit1:
4754 pci_disable_device(pdev);
4755 _exit0:
4756 kfree(ll_config);
4757 kfree(device_config);
4758 driver_config->config_dev_cnt--;
4759 driver_config->total_dev_cnt--;
4760 return ret;
4761 }
4762
4763 /**
4764 * vxge_rem_nic - Free the PCI device
4765 * @pdev: structure containing the PCI related information of the device.
4766 * Description: This function is called by the Pci subsystem to release a
4767 * PCI device and free up all resource held up by the device.
4768 */
4769 static void __devexit vxge_remove(struct pci_dev *pdev)
4770 {
4771 struct __vxge_hw_device *hldev;
4772 struct vxgedev *vdev;
4773 int i;
4774
4775 hldev = pci_get_drvdata(pdev);
4776 if (hldev == NULL)
4777 return;
4778
4779 vdev = netdev_priv(hldev->ndev);
4780
4781 vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4782 vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4783 __func__);
4784
4785 for (i = 0; i < vdev->no_of_vpath; i++)
4786 vxge_free_mac_add_list(&vdev->vpaths[i]);
4787
4788 vxge_device_unregister(hldev);
4789 pci_set_drvdata(pdev, NULL);
4790 /* Do not call pci_disable_sriov here, as it will break child devices */
4791 vxge_hw_device_terminate(hldev);
4792 iounmap(vdev->bar0);
4793 pci_release_region(pdev, 0);
4794 pci_disable_device(pdev);
4795 driver_config->config_dev_cnt--;
4796 driver_config->total_dev_cnt--;
4797
4798 vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4799 __func__, __LINE__);
4800 vxge_debug_entryexit(vdev->level_trace, "%s:%d Exiting...", __func__,
4801 __LINE__);
4802 }
4803
4804 static struct pci_error_handlers vxge_err_handler = {
4805 .error_detected = vxge_io_error_detected,
4806 .slot_reset = vxge_io_slot_reset,
4807 .resume = vxge_io_resume,
4808 };
4809
4810 static struct pci_driver vxge_driver = {
4811 .name = VXGE_DRIVER_NAME,
4812 .id_table = vxge_id_table,
4813 .probe = vxge_probe,
4814 .remove = __devexit_p(vxge_remove),
4815 #ifdef CONFIG_PM
4816 .suspend = vxge_pm_suspend,
4817 .resume = vxge_pm_resume,
4818 #endif
4819 .err_handler = &vxge_err_handler,
4820 };
4821
4822 static int __init
4823 vxge_starter(void)
4824 {
4825 int ret = 0;
4826
4827 pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4828 pr_info("Driver version: %s\n", DRV_VERSION);
4829
4830 verify_bandwidth();
4831
4832 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4833 if (!driver_config)
4834 return -ENOMEM;
4835
4836 ret = pci_register_driver(&vxge_driver);
4837 if (ret) {
4838 kfree(driver_config);
4839 goto err;
4840 }
4841
4842 if (driver_config->config_dev_cnt &&
4843 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4844 vxge_debug_init(VXGE_ERR,
4845 "%s: Configured %d of %d devices",
4846 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4847 driver_config->total_dev_cnt);
4848 err:
4849 return ret;
4850 }
4851
4852 static void __exit
4853 vxge_closer(void)
4854 {
4855 pci_unregister_driver(&vxge_driver);
4856 kfree(driver_config);
4857 }
4858 module_init(vxge_starter);
4859 module_exit(vxge_closer);
Linus' kernel tree