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Merge branch 'linux-2.6.31.y' of git://git.kernel.org/pub/scm/linux/kernel/git/inaky...
[net-next-2.6.git] / drivers / net / vxge / vxge-main.c
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703da5a1
RV		 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 Neterion Inc's X3100 Series 10GbE PCIe I/O
11* Virtualized Server Adapter.
12* Copyright(c) 2002-2009 Neterion Inc.
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#include <linux/if_vlan.h>
45#include <linux/pci.h>
2b05e002 46#include <linux/tcp.h>
703da5a1
RV		 47#include <net/ip.h>
48#include <linux/netdevice.h>
49#include <linux/etherdevice.h>
50#include "vxge-main.h"
51#include "vxge-reg.h"
52
53MODULE_LICENSE("Dual BSD/GPL");
54MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
55 "Virtualized Server Adapter");
56
57static struct pci_device_id vxge_id_table[] __devinitdata = {
58 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
59 PCI_ANY_ID},
60 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
61 PCI_ANY_ID},
62 {0}
63};
64
65MODULE_DEVICE_TABLE(pci, vxge_id_table);
66
67VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
68VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
69VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
70VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
71VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
72VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
73
74static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
75 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
76static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
77 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
78module_param_array(bw_percentage, uint, NULL, 0);
79
80static struct vxge_drv_config *driver_config;
81
82static inline int is_vxge_card_up(struct vxgedev *vdev)
83{
84 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
85}
86
87static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
88{
89 unsigned long flags = 0;
90 struct sk_buff *skb_ptr = NULL;
91 struct sk_buff **temp, *head, *skb;
92
93 if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
94 vxge_hw_vpath_poll_tx(fifo->handle, (void **)&skb_ptr);
95 spin_unlock_irqrestore(&fifo->tx_lock, flags);
96 }
97 /* free SKBs */
98 head = skb_ptr;
99 while (head) {
100 skb = head;
101 temp = (struct sk_buff **)&skb->cb;
102 head = *temp;
103 *temp = NULL;
104 dev_kfree_skb_irq(skb);
105 }
106}
107
108static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
109{
110 int i;
111
112 /* Complete all transmits */
113 for (i = 0; i < vdev->no_of_vpath; i++)
114 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
115}
116
117static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
118{
119 int i;
120 struct vxge_ring *ring;
121
122 /* Complete all receives*/
123 for (i = 0; i < vdev->no_of_vpath; i++) {
124 ring = &vdev->vpaths[i].ring;
125 vxge_hw_vpath_poll_rx(ring->handle);
126 }
127}
128
129/*
130 * MultiQ manipulation helper functions
131 */
132void vxge_stop_all_tx_queue(struct vxgedev *vdev)
133{
134 int i;
135 struct net_device *dev = vdev->ndev;
136
137 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
138 for (i = 0; i < vdev->no_of_vpath; i++)
139 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
140 }
141 netif_tx_stop_all_queues(dev);
142}
143
144void vxge_stop_tx_queue(struct vxge_fifo *fifo)
145{
146 struct net_device *dev = fifo->ndev;
147
148 struct netdev_queue *txq = NULL;
149 if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
150 txq = netdev_get_tx_queue(dev, fifo->driver_id);
151 else {
152 txq = netdev_get_tx_queue(dev, 0);
153 fifo->queue_state = VPATH_QUEUE_STOP;
154 }
155
156 netif_tx_stop_queue(txq);
157}
158
159void vxge_start_all_tx_queue(struct vxgedev *vdev)
160{
161 int i;
162 struct net_device *dev = vdev->ndev;
163
164 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
165 for (i = 0; i < vdev->no_of_vpath; i++)
166 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
167 }
168 netif_tx_start_all_queues(dev);
169}
170
171static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
172{
173 int i;
174 struct net_device *dev = vdev->ndev;
175
176 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
177 for (i = 0; i < vdev->no_of_vpath; i++)
178 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
179 }
180 netif_tx_wake_all_queues(dev);
181}
182
183void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
184{
185 struct net_device *dev = fifo->ndev;
186
187 int vpath_no = fifo->driver_id;
188 struct netdev_queue *txq = NULL;
189 if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
190 txq = netdev_get_tx_queue(dev, vpath_no);
191 if (netif_tx_queue_stopped(txq))
192 netif_tx_wake_queue(txq);
193 } else {
194 txq = netdev_get_tx_queue(dev, 0);
195 if (fifo->queue_state == VPATH_QUEUE_STOP)
196 if (netif_tx_queue_stopped(txq)) {
197 fifo->queue_state = VPATH_QUEUE_START;
198 netif_tx_wake_queue(txq);
199 }
200 }
201}
202
203/*
204 * vxge_callback_link_up
205 *
206 * This function is called during interrupt context to notify link up state
207 * change.
208 */
209void
210vxge_callback_link_up(struct __vxge_hw_device *hldev)
211{
212 struct net_device *dev = hldev->ndev;
213 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
214
215 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
216 vdev->ndev->name, __func__, __LINE__);
217 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
218 vdev->stats.link_up++;
219
220 netif_carrier_on(vdev->ndev);
221 vxge_wake_all_tx_queue(vdev);
222
223 vxge_debug_entryexit(VXGE_TRACE,
224 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
225}
226
227/*
228 * vxge_callback_link_down
229 *
230 * This function is called during interrupt context to notify link down state
231 * change.
232 */
233void
234vxge_callback_link_down(struct __vxge_hw_device *hldev)
235{
236 struct net_device *dev = hldev->ndev;
237 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
238
239 vxge_debug_entryexit(VXGE_TRACE,
240 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
241 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
242
243 vdev->stats.link_down++;
244 netif_carrier_off(vdev->ndev);
245 vxge_stop_all_tx_queue(vdev);
246
247 vxge_debug_entryexit(VXGE_TRACE,
248 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
249}
250
251/*
252 * vxge_rx_alloc
253 *
254 * Allocate SKB.
255 */
256static struct sk_buff*
257vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
258{
259 struct net_device *dev;
260 struct sk_buff *skb;
261 struct vxge_rx_priv *rx_priv;
262
263 dev = ring->ndev;
264 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
265 ring->ndev->name, __func__, __LINE__);
266
267 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
268
269 /* try to allocate skb first. this one may fail */
270 skb = netdev_alloc_skb(dev, skb_size +
271 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
272 if (skb == NULL) {
273 vxge_debug_mem(VXGE_ERR,
274 "%s: out of memory to allocate SKB", dev->name);
275 ring->stats.skb_alloc_fail++;
276 return NULL;
277 }
278
279 vxge_debug_mem(VXGE_TRACE,
280 "%s: %s:%d Skb : 0x%p", ring->ndev->name,
281 __func__, __LINE__, skb);
282
283 skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
284
285 rx_priv->skb = skb;
286 rx_priv->data_size = skb_size;
287 vxge_debug_entryexit(VXGE_TRACE,
288 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
289
290 return skb;
291}
292
293/*
294 * vxge_rx_map
295 */
296static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
297{
298 struct vxge_rx_priv *rx_priv;
299 dma_addr_t dma_addr;
300
301 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
302 ring->ndev->name, __func__, __LINE__);
303 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
304
305 dma_addr = pci_map_single(ring->pdev, rx_priv->skb->data,
306 rx_priv->data_size, PCI_DMA_FROMDEVICE);
307
308 if (dma_addr == 0) {
309 ring->stats.pci_map_fail++;
310 return -EIO;
311 }
312 vxge_debug_mem(VXGE_TRACE,
313 "%s: %s:%d 1 buffer mode dma_addr = 0x%llx",
314 ring->ndev->name, __func__, __LINE__,
315 (unsigned long long)dma_addr);
316 vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
317
318 rx_priv->data_dma = dma_addr;
319 vxge_debug_entryexit(VXGE_TRACE,
320 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
321
322 return 0;
323}
324
325/*
326 * vxge_rx_initial_replenish
327 * Allocation of RxD as an initial replenish procedure.
328 */
329static enum vxge_hw_status
330vxge_rx_initial_replenish(void *dtrh, void *userdata)
331{
332 struct vxge_ring *ring = (struct vxge_ring *)userdata;
333 struct vxge_rx_priv *rx_priv;
334
335 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
336 ring->ndev->name, __func__, __LINE__);
337 if (vxge_rx_alloc(dtrh, ring,
338 VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
339 return VXGE_HW_FAIL;
340
341 if (vxge_rx_map(dtrh, ring)) {
342 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
343 dev_kfree_skb(rx_priv->skb);
344
345 return VXGE_HW_FAIL;
346 }
347 vxge_debug_entryexit(VXGE_TRACE,
348 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
349
350 return VXGE_HW_OK;
351}
352
353static inline void
354vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
355 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
356{
357
358 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
359 ring->ndev->name, __func__, __LINE__);
360 skb_record_rx_queue(skb, ring->driver_id);
361 skb->protocol = eth_type_trans(skb, ring->ndev);
362
363 ring->stats.rx_frms++;
364 ring->stats.rx_bytes += pkt_length;
365
366 if (skb->pkt_type == PACKET_MULTICAST)
367 ring->stats.rx_mcast++;
368
369 vxge_debug_rx(VXGE_TRACE,
370 "%s: %s:%d skb protocol = %d",
371 ring->ndev->name, __func__, __LINE__, skb->protocol);
372
373 if (ring->gro_enable) {
374 if (ring->vlgrp && ext_info->vlan &&
375 (ring->vlan_tag_strip ==
376 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
377 vlan_gro_receive(&ring->napi, ring->vlgrp,
378 ext_info->vlan, skb);
379 else
380 napi_gro_receive(&ring->napi, skb);
381 } else {
382 if (ring->vlgrp && vlan &&
383 (ring->vlan_tag_strip ==
384 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
385 vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
386 else
387 netif_receive_skb(skb);
388 }
389 vxge_debug_entryexit(VXGE_TRACE,
390 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
391}
392
393static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
394 struct vxge_rx_priv *rx_priv)
395{
396 pci_dma_sync_single_for_device(ring->pdev,
397 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
398
399 vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
400 vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
401}
402
403static inline void vxge_post(int *dtr_cnt, void **first_dtr,
404 void *post_dtr, struct __vxge_hw_ring *ringh)
405{
406 int dtr_count = *dtr_cnt;
407 if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
408 if (*first_dtr)
409 vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
410 *first_dtr = post_dtr;
411 } else
412 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
413 dtr_count++;
414 *dtr_cnt = dtr_count;
415}
416
417/*
418 * vxge_rx_1b_compl
419 *
420 * If the interrupt is because of a received frame or if the receive ring
421 * contains fresh as yet un-processed frames, this function is called.
422 */
423enum vxge_hw_status
424vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
425 u8 t_code, void *userdata)
426{
427 struct vxge_ring *ring = (struct vxge_ring *)userdata;
428 struct net_device *dev = ring->ndev;
429 unsigned int dma_sizes;
430 void *first_dtr = NULL;
431 int dtr_cnt = 0;
432 int data_size;
433 dma_addr_t data_dma;
434 int pkt_length;
435 struct sk_buff *skb;
436 struct vxge_rx_priv *rx_priv;
437 struct vxge_hw_ring_rxd_info ext_info;
438 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
439 ring->ndev->name, __func__, __LINE__);
440 ring->pkts_processed = 0;
441
442 vxge_hw_ring_replenish(ringh, 0);
443
444 do {
445 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
446 skb = rx_priv->skb;
447 data_size = rx_priv->data_size;
448 data_dma = rx_priv->data_dma;
449
450 vxge_debug_rx(VXGE_TRACE,
451 "%s: %s:%d skb = 0x%p",
452 ring->ndev->name, __func__, __LINE__, skb);
453
454 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
455 pkt_length = dma_sizes;
456
457 vxge_debug_rx(VXGE_TRACE,
458 "%s: %s:%d Packet Length = %d",
459 ring->ndev->name, __func__, __LINE__, pkt_length);
460
461 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
462
463 /* check skb validity */
464 vxge_assert(skb);
465
466 prefetch((char *)skb + L1_CACHE_BYTES);
467 if (unlikely(t_code)) {
468
469 if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
470 VXGE_HW_OK) {
471
472 ring->stats.rx_errors++;
473 vxge_debug_rx(VXGE_TRACE,
474 "%s: %s :%d Rx T_code is %d",
475 ring->ndev->name, __func__,
476 __LINE__, t_code);
477
478 /* If the t_code is not supported and if the
479 * t_code is other than 0x5 (unparseable packet
480 * such as unknown UPV6 header), Drop it !!!
481 */
482 vxge_re_pre_post(dtr, ring, rx_priv);
483
484 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
485 ring->stats.rx_dropped++;
486 continue;
487 }
488 }
489
490 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
491
492 if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
493
494 if (!vxge_rx_map(dtr, ring)) {
495 skb_put(skb, pkt_length);
496
497 pci_unmap_single(ring->pdev, data_dma,
498 data_size, PCI_DMA_FROMDEVICE);
499
500 vxge_hw_ring_rxd_pre_post(ringh, dtr);
501 vxge_post(&dtr_cnt, &first_dtr, dtr,
502 ringh);
503 } else {
504 dev_kfree_skb(rx_priv->skb);
505 rx_priv->skb = skb;
506 rx_priv->data_size = data_size;
507 vxge_re_pre_post(dtr, ring, rx_priv);
508
509 vxge_post(&dtr_cnt, &first_dtr, dtr,
510 ringh);
511 ring->stats.rx_dropped++;
512 break;
513 }
514 } else {
515 vxge_re_pre_post(dtr, ring, rx_priv);
516
517 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
518 ring->stats.rx_dropped++;
519 break;
520 }
521 } else {
522 struct sk_buff *skb_up;
523
524 skb_up = netdev_alloc_skb(dev, pkt_length +
525 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
526 if (skb_up != NULL) {
527 skb_reserve(skb_up,
528 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
529
530 pci_dma_sync_single_for_cpu(ring->pdev,
531 data_dma, data_size,
532 PCI_DMA_FROMDEVICE);
533
534 vxge_debug_mem(VXGE_TRACE,
535 "%s: %s:%d skb_up = %p",
536 ring->ndev->name, __func__,
537 __LINE__, skb);
538 memcpy(skb_up->data, skb->data, pkt_length);
539
540 vxge_re_pre_post(dtr, ring, rx_priv);
541
542 vxge_post(&dtr_cnt, &first_dtr, dtr,
543 ringh);
544 /* will netif_rx small SKB instead */
545 skb = skb_up;
546 skb_put(skb, pkt_length);
547 } else {
548 vxge_re_pre_post(dtr, ring, rx_priv);
549
550 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
551 vxge_debug_rx(VXGE_ERR,
552 "%s: vxge_rx_1b_compl: out of "
553 "memory", dev->name);
554 ring->stats.skb_alloc_fail++;
555 break;
556 }
557 }
558
559 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
560 !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
561 ring->rx_csum && /* Offload Rx side CSUM */
562 ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
563 ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
564 skb->ip_summed = CHECKSUM_UNNECESSARY;
565 else
566 skb->ip_summed = CHECKSUM_NONE;
567
568 vxge_rx_complete(ring, skb, ext_info.vlan,
569 pkt_length, &ext_info);
570
571 ring->budget--;
572 ring->pkts_processed++;
573 if (!ring->budget)
574 break;
575
576 } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
577 &t_code) == VXGE_HW_OK);
578
579 if (first_dtr)
580 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
581
582 dev->last_rx = jiffies;
583
584 vxge_debug_entryexit(VXGE_TRACE,
585 "%s:%d Exiting...",
586 __func__, __LINE__);
587 return VXGE_HW_OK;
588}
589
590/*
591 * vxge_xmit_compl
592 *
593 * If an interrupt was raised to indicate DMA complete of the Tx packet,
594 * this function is called. It identifies the last TxD whose buffer was
595 * freed and frees all skbs whose data have already DMA'ed into the NICs
596 * internal memory.
597 */
598enum vxge_hw_status
599vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
600 enum vxge_hw_fifo_tcode t_code, void *userdata,
601 void **skb_ptr)
602{
603 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
604 struct sk_buff *skb, *head = NULL;
605 struct sk_buff **temp;
606 int pkt_cnt = 0;
607
608 vxge_debug_entryexit(VXGE_TRACE,
609 "%s:%d Entered....", __func__, __LINE__);
610
611 do {
612 int frg_cnt;
613 skb_frag_t *frag;
614 int i = 0, j;
615 struct vxge_tx_priv *txd_priv =
616 vxge_hw_fifo_txdl_private_get(dtr);
617
618 skb = txd_priv->skb;
619 frg_cnt = skb_shinfo(skb)->nr_frags;
620 frag = &skb_shinfo(skb)->frags[0];
621
622 vxge_debug_tx(VXGE_TRACE,
623 "%s: %s:%d fifo_hw = %p dtr = %p "
624 "tcode = 0x%x", fifo->ndev->name, __func__,
625 __LINE__, fifo_hw, dtr, t_code);
626 /* check skb validity */
627 vxge_assert(skb);
628 vxge_debug_tx(VXGE_TRACE,
629 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
630 fifo->ndev->name, __func__, __LINE__,
631 skb, txd_priv, frg_cnt);
632 if (unlikely(t_code)) {
633 fifo->stats.tx_errors++;
634 vxge_debug_tx(VXGE_ERR,
635 "%s: tx: dtr %p completed due to "
636 "error t_code %01x", fifo->ndev->name,
637 dtr, t_code);
638 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
639 }
640
641 /* for unfragmented skb */
642 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
643 skb_headlen(skb), PCI_DMA_TODEVICE);
644
645 for (j = 0; j < frg_cnt; j++) {
646 pci_unmap_page(fifo->pdev,
647 txd_priv->dma_buffers[i++],
648 frag->size, PCI_DMA_TODEVICE);
649 frag += 1;
650 }
651
652 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
653
654 /* Updating the statistics block */
655 fifo->stats.tx_frms++;
656 fifo->stats.tx_bytes += skb->len;
657
658 temp = (struct sk_buff **)&skb->cb;
659 *temp = head;
660 head = skb;
661
662 pkt_cnt++;
663 if (pkt_cnt > fifo->indicate_max_pkts)
664 break;
665
666 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
667 &dtr, &t_code) == VXGE_HW_OK);
668
669 vxge_wake_tx_queue(fifo, skb);
670
671 if (skb_ptr)
672 *skb_ptr = (void *) head;
673
674 vxge_debug_entryexit(VXGE_TRACE,
675 "%s: %s:%d Exiting...",
676 fifo->ndev->name, __func__, __LINE__);
677 return VXGE_HW_OK;
678}
679
680/* select a vpath to trasmit the packet */
681static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
682 int *do_lock)
683{
684 u16 queue_len, counter = 0;
685 if (skb->protocol == htons(ETH_P_IP)) {
686 struct iphdr *ip;
687 struct tcphdr *th;
688
689 ip = ip_hdr(skb);
690
691 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
692 th = (struct tcphdr *)(((unsigned char *)ip) +
693 ip->ihl*4);
694
695 queue_len = vdev->no_of_vpath;
696 counter = (ntohs(th->source) +
697 ntohs(th->dest)) &
698 vdev->vpath_selector[queue_len - 1];
699 if (counter >= queue_len)
700 counter = queue_len - 1;
701
702 if (ip->protocol == IPPROTO_UDP) {
703#ifdef NETIF_F_LLTX
704 *do_lock = 0;
705#endif
706 }
707 }
708 }
709 return counter;
710}
711
712static enum vxge_hw_status vxge_search_mac_addr_in_list(
713 struct vxge_vpath *vpath, u64 del_mac)
714{
715 struct list_head *entry, *next;
716 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
717 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
718 return TRUE;
719 }
720 return FALSE;
721}
722
723static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
724{
725 struct macInfo mac_info;
726 u8 *mac_address = NULL;
727 u64 mac_addr = 0, vpath_vector = 0;
728 int vpath_idx = 0;
729 enum vxge_hw_status status = VXGE_HW_OK;
730 struct vxge_vpath *vpath = NULL;
731 struct __vxge_hw_device *hldev;
732
733 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
734
735 mac_address = (u8 *)&mac_addr;
736 memcpy(mac_address, mac_header, ETH_ALEN);
737
738 /* Is this mac address already in the list? */
739 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
740 vpath = &vdev->vpaths[vpath_idx];
741 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
742 return vpath_idx;
743 }
744
745 memset(&mac_info, 0, sizeof(struct macInfo));
746 memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
747
748 /* Any vpath has room to add mac address to its da table? */
749 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
750 vpath = &vdev->vpaths[vpath_idx];
751 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
752 /* Add this mac address to this vpath */
753 mac_info.vpath_no = vpath_idx;
754 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
755 status = vxge_add_mac_addr(vdev, &mac_info);
756 if (status != VXGE_HW_OK)
757 return -EPERM;
758 return vpath_idx;
759 }
760 }
761
762 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
763 vpath_idx = 0;
764 mac_info.vpath_no = vpath_idx;
765 /* Is the first vpath already selected as catch-basin ? */
766 vpath = &vdev->vpaths[vpath_idx];
767 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
768 /* Add this mac address to this vpath */
769 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
770 return -EPERM;
771 return vpath_idx;
772 }
773
774 /* Select first vpath as catch-basin */
775 vpath_vector = vxge_mBIT(vpath->device_id);
776 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
777 vxge_hw_mgmt_reg_type_mrpcim,
778 0,
779 (ulong)offsetof(
780 struct vxge_hw_mrpcim_reg,
781 rts_mgr_cbasin_cfg),
782 vpath_vector);
783 if (status != VXGE_HW_OK) {
784 vxge_debug_tx(VXGE_ERR,
785 "%s: Unable to set the vpath-%d in catch-basin mode",
786 VXGE_DRIVER_NAME, vpath->device_id);
787 return -EPERM;
788 }
789
790 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
791 return -EPERM;
792
793 return vpath_idx;
794}
795
796/**
797 * vxge_xmit
798 * @skb : the socket buffer containing the Tx data.
799 * @dev : device pointer.
800 *
801 * This function is the Tx entry point of the driver. Neterion NIC supports
802 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
803 * NOTE: when device cant queue the pkt, just the trans_start variable will
804 * not be upadted.
805*/
806static int
807vxge_xmit(struct sk_buff *skb, struct net_device *dev)
808{
809 struct vxge_fifo *fifo = NULL;
810 void *dtr_priv;
811 void *dtr = NULL;
812 struct vxgedev *vdev = NULL;
813 enum vxge_hw_status status;
814 int frg_cnt, first_frg_len;
815 skb_frag_t *frag;
816 int i = 0, j = 0, avail;
817 u64 dma_pointer;
818 struct vxge_tx_priv *txdl_priv = NULL;
819 struct __vxge_hw_fifo *fifo_hw;
820 u32 max_mss = 0x0;
821 int offload_type;
822 unsigned long flags = 0;
823 int vpath_no = 0;
824 int do_spin_tx_lock = 1;
825
826 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
827 dev->name, __func__, __LINE__);
828
829 /* A buffer with no data will be dropped */
830 if (unlikely(skb->len <= 0)) {
831 vxge_debug_tx(VXGE_ERR,
832 "%s: Buffer has no data..", dev->name);
833 dev_kfree_skb(skb);
834 return NETDEV_TX_OK;
835 }
836
837 vdev = (struct vxgedev *)netdev_priv(dev);
838
839 if (unlikely(!is_vxge_card_up(vdev))) {
840 vxge_debug_tx(VXGE_ERR,
841 "%s: vdev not initialized", dev->name);
842 dev_kfree_skb(skb);
843 return NETDEV_TX_OK;
844 }
845
846 if (vdev->config.addr_learn_en) {
847 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
848 if (vpath_no == -EPERM) {
849 vxge_debug_tx(VXGE_ERR,
850 "%s: Failed to store the mac address",
851 dev->name);
852 dev_kfree_skb(skb);
853 return NETDEV_TX_OK;
854 }
855 }
856
857 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
858 vpath_no = skb_get_queue_mapping(skb);
859 else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
860 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
861
862 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
863
864 if (vpath_no >= vdev->no_of_vpath)
865 vpath_no = 0;
866
867 fifo = &vdev->vpaths[vpath_no].fifo;
868 fifo_hw = fifo->handle;
869
870 if (do_spin_tx_lock)
871 spin_lock_irqsave(&fifo->tx_lock, flags);
872 else {
873 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
874 return NETDEV_TX_LOCKED;
875 }
876
877 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
878 if (netif_subqueue_stopped(dev, skb)) {
879 spin_unlock_irqrestore(&fifo->tx_lock, flags);
880 return NETDEV_TX_BUSY;
881 }
882 } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
883 if (netif_queue_stopped(dev)) {
884 spin_unlock_irqrestore(&fifo->tx_lock, flags);
885 return NETDEV_TX_BUSY;
886 }
887 }
888 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
889 if (avail == 0) {
890 vxge_debug_tx(VXGE_ERR,
891 "%s: No free TXDs available", dev->name);
892 fifo->stats.txd_not_free++;
893 vxge_stop_tx_queue(fifo);
894 goto _exit2;
895 }
896
897 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
898 if (unlikely(status != VXGE_HW_OK)) {
899 vxge_debug_tx(VXGE_ERR,
900 "%s: Out of descriptors .", dev->name);
901 fifo->stats.txd_out_of_desc++;
902 vxge_stop_tx_queue(fifo);
903 goto _exit2;
904 }
905
906 vxge_debug_tx(VXGE_TRACE,
907 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
908 dev->name, __func__, __LINE__,
909 fifo_hw, dtr, dtr_priv);
910
911 if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
912 u16 vlan_tag = vlan_tx_tag_get(skb);
913 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
914 }
915
916 first_frg_len = skb_headlen(skb);
917
918 dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
919 PCI_DMA_TODEVICE);
920
921 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
922 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
923 vxge_stop_tx_queue(fifo);
924 fifo->stats.pci_map_fail++;
925 goto _exit2;
926 }
927
928 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
929 txdl_priv->skb = skb;
930 txdl_priv->dma_buffers[j] = dma_pointer;
931
932 frg_cnt = skb_shinfo(skb)->nr_frags;
933 vxge_debug_tx(VXGE_TRACE,
934 "%s: %s:%d skb = %p txdl_priv = %p "
935 "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
936 __func__, __LINE__, skb, txdl_priv,
937 frg_cnt, (unsigned long long)dma_pointer);
938
939 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
940 first_frg_len);
941
942 frag = &skb_shinfo(skb)->frags[0];
943 for (i = 0; i < frg_cnt; i++) {
944 /* ignore 0 length fragment */
945 if (!frag->size)
946 continue;
947
948 dma_pointer =
949 (u64)pci_map_page(fifo->pdev, frag->page,
950 frag->page_offset, frag->size,
951 PCI_DMA_TODEVICE);
952
953 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
954 goto _exit0;
955 vxge_debug_tx(VXGE_TRACE,
956 "%s: %s:%d frag = %d dma_pointer = 0x%llx",
957 dev->name, __func__, __LINE__, i,
958 (unsigned long long)dma_pointer);
959
960 txdl_priv->dma_buffers[j] = dma_pointer;
961 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
962 frag->size);
963 frag += 1;
964 }
965
966 offload_type = vxge_offload_type(skb);
967
968 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
969
970 int mss = vxge_tcp_mss(skb);
971 if (mss) {
972 max_mss = dev->mtu + ETH_HLEN -
973 VXGE_HW_TCPIP_HEADER_MAX_SIZE;
974 if (mss > max_mss)
975 mss = max_mss;
976 vxge_debug_tx(VXGE_TRACE,
977 "%s: %s:%d mss = %d",
978 dev->name, __func__, __LINE__, mss);
979 vxge_hw_fifo_txdl_mss_set(dtr, mss);
980 } else {
981 vxge_assert(skb->len <=
982 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
983 vxge_assert(0);
984 goto _exit1;
985 }
986 }
987
988 if (skb->ip_summed == CHECKSUM_PARTIAL)
989 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
990 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
991 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
992 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
993
994 vxge_hw_fifo_txdl_post(fifo_hw, dtr);
995 dev->trans_start = jiffies;
996 spin_unlock_irqrestore(&fifo->tx_lock, flags);
997
998 VXGE_COMPLETE_VPATH_TX(fifo);
999 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
1000 dev->name, __func__, __LINE__);
1001 return 0;
1002
1003_exit0:
1004 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1005
1006_exit1:
1007 j = 0;
1008 frag = &skb_shinfo(skb)->frags[0];
1009
1010 pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1011 skb_headlen(skb), PCI_DMA_TODEVICE);
1012
1013 for (; j < i; j++) {
1014 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1015 frag->size, PCI_DMA_TODEVICE);
1016 frag += 1;
1017 }
1018
1019 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1020_exit2:
1021 dev_kfree_skb(skb);
1022 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1023 VXGE_COMPLETE_VPATH_TX(fifo);
1024
1025 return 0;
1026}
1027
1028/*
1029 * vxge_rx_term
1030 *
1031 * Function will be called by hw function to abort all outstanding receive
1032 * descriptors.
1033 */
1034static void
1035vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1036{
1037 struct vxge_ring *ring = (struct vxge_ring *)userdata;
1038 struct vxge_rx_priv *rx_priv =
1039 vxge_hw_ring_rxd_private_get(dtrh);
1040
1041 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1042 ring->ndev->name, __func__, __LINE__);
1043 if (state != VXGE_HW_RXD_STATE_POSTED)
1044 return;
1045
1046 pci_unmap_single(ring->pdev, rx_priv->data_dma,
1047 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1048
1049 dev_kfree_skb(rx_priv->skb);
1050
1051 vxge_debug_entryexit(VXGE_TRACE,
1052 "%s: %s:%d Exiting...",
1053 ring->ndev->name, __func__, __LINE__);
1054}
1055
1056/*
1057 * vxge_tx_term
1058 *
1059 * Function will be called to abort all outstanding tx descriptors
1060 */
1061static void
1062vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1063{
1064 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1065 skb_frag_t *frag;
1066 int i = 0, j, frg_cnt;
1067 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1068 struct sk_buff *skb = txd_priv->skb;
1069
1070 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1071
1072 if (state != VXGE_HW_TXDL_STATE_POSTED)
1073 return;
1074
1075 /* check skb validity */
1076 vxge_assert(skb);
1077 frg_cnt = skb_shinfo(skb)->nr_frags;
1078 frag = &skb_shinfo(skb)->frags[0];
1079
1080 /* for unfragmented skb */
1081 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1082 skb_headlen(skb), PCI_DMA_TODEVICE);
1083
1084 for (j = 0; j < frg_cnt; j++) {
1085 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1086 frag->size, PCI_DMA_TODEVICE);
1087 frag += 1;
1088 }
1089
1090 dev_kfree_skb(skb);
1091
1092 vxge_debug_entryexit(VXGE_TRACE,
1093 "%s:%d Exiting...", __func__, __LINE__);
1094}
1095
1096/**
1097 * vxge_set_multicast
1098 * @dev: pointer to the device structure
1099 *
1100 * Entry point for multicast address enable/disable
1101 * This function is a driver entry point which gets called by the kernel
1102 * whenever multicast addresses must be enabled/disabled. This also gets
1103 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1104 * determine, if multicast address must be enabled or if promiscuous mode
1105 * is to be disabled etc.
1106 */
1107static void vxge_set_multicast(struct net_device *dev)
1108{
1109 struct dev_mc_list *mclist;
1110 struct vxgedev *vdev;
1111 int i, mcast_cnt = 0;
1112 struct __vxge_hw_device *hldev;
1113 enum vxge_hw_status status = VXGE_HW_OK;
1114 struct macInfo mac_info;
1115 int vpath_idx = 0;
1116 struct vxge_mac_addrs *mac_entry;
1117 struct list_head *list_head;
1118 struct list_head *entry, *next;
1119 u8 *mac_address = NULL;
1120
1121 vxge_debug_entryexit(VXGE_TRACE,
1122 "%s:%d", __func__, __LINE__);
1123
1124 vdev = (struct vxgedev *)netdev_priv(dev);
1125 hldev = (struct __vxge_hw_device *)vdev->devh;
1126
1127 if (unlikely(!is_vxge_card_up(vdev)))
1128 return;
1129
1130 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1131 for (i = 0; i < vdev->no_of_vpath; i++) {
1132 vxge_assert(vdev->vpaths[i].is_open);
1133 status = vxge_hw_vpath_mcast_enable(
1134 vdev->vpaths[i].handle);
1135 vdev->all_multi_flg = 1;
1136 }
1137 } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1138 for (i = 0; i < vdev->no_of_vpath; i++) {
1139 vxge_assert(vdev->vpaths[i].is_open);
1140 status = vxge_hw_vpath_mcast_disable(
1141 vdev->vpaths[i].handle);
1142 vdev->all_multi_flg = 1;
1143 }
1144 }
1145
1146 if (status != VXGE_HW_OK)
1147 vxge_debug_init(VXGE_ERR,
1148 "failed to %s multicast, status %d",
1149 dev->flags & IFF_ALLMULTI ?
1150 "enable" : "disable", status);
1151
1152 if (!vdev->config.addr_learn_en) {
1153 if (dev->flags & IFF_PROMISC) {
1154 for (i = 0; i < vdev->no_of_vpath; i++) {
1155 vxge_assert(vdev->vpaths[i].is_open);
1156 status = vxge_hw_vpath_promisc_enable(
1157 vdev->vpaths[i].handle);
1158 }
1159 } else {
1160 for (i = 0; i < vdev->no_of_vpath; i++) {
1161 vxge_assert(vdev->vpaths[i].is_open);
1162 status = vxge_hw_vpath_promisc_disable(
1163 vdev->vpaths[i].handle);
1164 }
1165 }
1166 }
1167
1168 memset(&mac_info, 0, sizeof(struct macInfo));
1169 /* Update individual M_CAST address list */
1170 if ((!vdev->all_multi_flg) && dev->mc_count) {
1171
1172 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1173 list_head = &vdev->vpaths[0].mac_addr_list;
1174 if ((dev->mc_count +
1175 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1176 vdev->vpaths[0].max_mac_addr_cnt)
1177 goto _set_all_mcast;
1178
1179 /* Delete previous MC's */
1180 for (i = 0; i < mcast_cnt; i++) {
1181 if (!list_empty(list_head))
1182 mac_entry = (struct vxge_mac_addrs *)
1183 list_first_entry(list_head,
1184 struct vxge_mac_addrs,
1185 item);
1186
1187 list_for_each_safe(entry, next, list_head) {
1188
1189 mac_entry = (struct vxge_mac_addrs *) entry;
1190 /* Copy the mac address to delete */
1191 mac_address = (u8 *)&mac_entry->macaddr;
1192 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1193
1194 /* Is this a multicast address */
1195 if (0x01 & mac_info.macaddr[0]) {
1196 for (vpath_idx = 0; vpath_idx <
1197 vdev->no_of_vpath;
1198 vpath_idx++) {
1199 mac_info.vpath_no = vpath_idx;
1200 status = vxge_del_mac_addr(
1201 vdev,
1202 &mac_info);
1203 }
1204 }
1205 }
1206 }
1207
1208 /* Add new ones */
1209 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1210 i++, mclist = mclist->next) {
1211
1212 memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1213 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1214 vpath_idx++) {
1215 mac_info.vpath_no = vpath_idx;
1216 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1217 status = vxge_add_mac_addr(vdev, &mac_info);
1218 if (status != VXGE_HW_OK) {
1219 vxge_debug_init(VXGE_ERR,
1220 "%s:%d Setting individual"
1221 "multicast address failed",
1222 __func__, __LINE__);
1223 goto _set_all_mcast;
1224 }
1225 }
1226 }
1227
1228 return;
1229_set_all_mcast:
1230 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1231 /* Delete previous MC's */
1232 for (i = 0; i < mcast_cnt; i++) {
1233
1234 list_for_each_safe(entry, next, list_head) {
1235
1236 mac_entry = (struct vxge_mac_addrs *) entry;
1237 /* Copy the mac address to delete */
1238 mac_address = (u8 *)&mac_entry->macaddr;
1239 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1240
1241 /* Is this a multicast address */
1242 if (0x01 & mac_info.macaddr[0])
1243 break;
1244 }
1245
1246 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1247 vpath_idx++) {
1248 mac_info.vpath_no = vpath_idx;
1249 status = vxge_del_mac_addr(vdev, &mac_info);
1250 }
1251 }
1252
1253 /* Enable all multicast */
1254 for (i = 0; i < vdev->no_of_vpath; i++) {
1255 vxge_assert(vdev->vpaths[i].is_open);
1256 status = vxge_hw_vpath_mcast_enable(
1257 vdev->vpaths[i].handle);
1258 if (status != VXGE_HW_OK) {
1259 vxge_debug_init(VXGE_ERR,
1260 "%s:%d Enabling all multicasts failed",
1261 __func__, __LINE__);
1262 }
1263 vdev->all_multi_flg = 1;
1264 }
1265 dev->flags |= IFF_ALLMULTI;
1266 }
1267
1268 vxge_debug_entryexit(VXGE_TRACE,
1269 "%s:%d Exiting...", __func__, __LINE__);
1270}
1271
1272/**
1273 * vxge_set_mac_addr
1274 * @dev: pointer to the device structure
1275 *
1276 * Update entry "0" (default MAC addr)
1277 */
1278static int vxge_set_mac_addr(struct net_device *dev, void *p)
1279{
1280 struct sockaddr *addr = p;
1281 struct vxgedev *vdev;
1282 struct __vxge_hw_device *hldev;
1283 enum vxge_hw_status status = VXGE_HW_OK;
1284 struct macInfo mac_info_new, mac_info_old;
1285 int vpath_idx = 0;
1286
1287 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1288
1289 vdev = (struct vxgedev *)netdev_priv(dev);
1290 hldev = vdev->devh;
1291
1292 if (!is_valid_ether_addr(addr->sa_data))
1293 return -EINVAL;
1294
1295 memset(&mac_info_new, 0, sizeof(struct macInfo));
1296 memset(&mac_info_old, 0, sizeof(struct macInfo));
1297
1298 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...",
1299 __func__, __LINE__);
1300
1301 /* Get the old address */
1302 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1303
1304 /* Copy the new address */
1305 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1306
1307 /* First delete the old mac address from all the vpaths
1308 as we can't specify the index while adding new mac address */
1309 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1310 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1311 if (!vpath->is_open) {
1312 /* This can happen when this interface is added/removed
1313 to the bonding interface. Delete this station address
1314 from the linked list */
1315 vxge_mac_list_del(vpath, &mac_info_old);
1316
1317 /* Add this new address to the linked list
1318 for later restoring */
1319 vxge_mac_list_add(vpath, &mac_info_new);
1320
1321 continue;
1322 }
1323 /* Delete the station address */
1324 mac_info_old.vpath_no = vpath_idx;
1325 status = vxge_del_mac_addr(vdev, &mac_info_old);
1326 }
1327
1328 if (unlikely(!is_vxge_card_up(vdev))) {
1329 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1330 return VXGE_HW_OK;
1331 }
1332
1333 /* Set this mac address to all the vpaths */
1334 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1335 mac_info_new.vpath_no = vpath_idx;
1336 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1337 status = vxge_add_mac_addr(vdev, &mac_info_new);
1338 if (status != VXGE_HW_OK)
1339 return -EINVAL;
1340 }
1341
1342 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1343
1344 return status;
1345}
1346
1347/*
1348 * vxge_vpath_intr_enable
1349 * @vdev: pointer to vdev
1350 * @vp_id: vpath for which to enable the interrupts
1351 *
1352 * Enables the interrupts for the vpath
1353*/
1354void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1355{
1356 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1357 int msix_id, alarm_msix_id;
1358 int tim_msix_id[4] = {[0 ...3] = 0};
1359
1360 vxge_hw_vpath_intr_enable(vpath->handle);
1361
1362 if (vdev->config.intr_type == INTA)
1363 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1364 else {
1365 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1366 alarm_msix_id =
1367 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1368
1369 tim_msix_id[0] = msix_id;
1370 tim_msix_id[1] = msix_id + 1;
1371 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1372 alarm_msix_id);
1373
1374 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1375 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1376
1377 /* enable the alarm vector */
1378 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_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*/
1389void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1390{
1391 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1392 int msix_id;
1393
1394 vxge_hw_vpath_intr_disable(vpath->handle);
1395
1396 if (vdev->config.intr_type == INTA)
1397 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1398 else {
1399 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1400 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1401 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1402
1403 /* disable the alarm vector */
1404 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1405 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1406 }
1407}
1408
1409/*
1410 * vxge_reset_vpath
1411 * @vdev: pointer to vdev
1412 * @vp_id: vpath to reset
1413 *
1414 * Resets the vpath
1415*/
1416static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1417{
1418 enum vxge_hw_status status = VXGE_HW_OK;
1419 int ret = 0;
1420
1421 /* check if device is down already */
1422 if (unlikely(!is_vxge_card_up(vdev)))
1423 return 0;
1424
1425 /* is device reset already scheduled */
1426 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1427 return 0;
1428
1429 if (vdev->vpaths[vp_id].handle) {
1430 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1431 == VXGE_HW_OK) {
1432 if (is_vxge_card_up(vdev) &&
1433 vxge_hw_vpath_recover_from_reset(
1434 vdev->vpaths[vp_id].handle)
1435 != VXGE_HW_OK) {
1436 vxge_debug_init(VXGE_ERR,
1437 "vxge_hw_vpath_recover_from_reset"
1438 "failed for vpath:%d", vp_id);
1439 return status;
1440 }
1441 } else {
1442 vxge_debug_init(VXGE_ERR,
1443 "vxge_hw_vpath_reset failed for"
1444 "vpath:%d", vp_id);
1445 return status;
1446 }
1447 } else
1448 return VXGE_HW_FAIL;
1449
1450 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1451 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1452
1453 /* Enable all broadcast */
1454 vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1455
1456 /* Enable the interrupts */
1457 vxge_vpath_intr_enable(vdev, vp_id);
1458
1459 smp_wmb();
1460
1461 /* Enable the flow of traffic through the vpath */
1462 vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1463
1464 smp_wmb();
1465 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1466 vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1467
1468 /* Vpath reset done */
1469 clear_bit(vp_id, &vdev->vp_reset);
1470
1471 /* Start the vpath queue */
1472 vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1473
1474 return ret;
1475}
1476
1477static int do_vxge_reset(struct vxgedev *vdev, int event)
1478{
1479 enum vxge_hw_status status;
1480 int ret = 0, vp_id, i;
1481
1482 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1483
1484 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1485 /* check if device is down already */
1486 if (unlikely(!is_vxge_card_up(vdev)))
1487 return 0;
1488
1489 /* is reset already scheduled */
1490 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1491 return 0;
1492 }
1493
1494 if (event == VXGE_LL_FULL_RESET) {
1495 /* wait for all the vpath reset to complete */
1496 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1497 while (test_bit(vp_id, &vdev->vp_reset))
1498 msleep(50);
1499 }
1500
1501 /* if execution mode is set to debug, don't reset the adapter */
1502 if (unlikely(vdev->exec_mode)) {
1503 vxge_debug_init(VXGE_ERR,
1504 "%s: execution mode is debug, returning..",
1505 vdev->ndev->name);
1506 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1507 vxge_stop_all_tx_queue(vdev);
1508 return 0;
1509 }
1510 }
1511
1512 if (event == VXGE_LL_FULL_RESET) {
1513 vxge_hw_device_intr_disable(vdev->devh);
1514
1515 switch (vdev->cric_err_event) {
1516 case VXGE_HW_EVENT_UNKNOWN:
1517 vxge_stop_all_tx_queue(vdev);
1518 vxge_debug_init(VXGE_ERR,
1519 "fatal: %s: Disabling device due to"
1520 "unknown error",
1521 vdev->ndev->name);
1522 ret = -EPERM;
1523 goto out;
1524 case VXGE_HW_EVENT_RESET_START:
1525 break;
1526 case VXGE_HW_EVENT_RESET_COMPLETE:
1527 case VXGE_HW_EVENT_LINK_DOWN:
1528 case VXGE_HW_EVENT_LINK_UP:
1529 case VXGE_HW_EVENT_ALARM_CLEARED:
1530 case VXGE_HW_EVENT_ECCERR:
1531 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1532 ret = -EPERM;
1533 goto out;
1534 case VXGE_HW_EVENT_FIFO_ERR:
1535 case VXGE_HW_EVENT_VPATH_ERR:
1536 break;
1537 case VXGE_HW_EVENT_CRITICAL_ERR:
1538 vxge_stop_all_tx_queue(vdev);
1539 vxge_debug_init(VXGE_ERR,
1540 "fatal: %s: Disabling device due to"
1541 "serious error",
1542 vdev->ndev->name);
1543 /* SOP or device reset required */
1544 /* This event is not currently used */
1545 ret = -EPERM;
1546 goto out;
1547 case VXGE_HW_EVENT_SERR:
1548 vxge_stop_all_tx_queue(vdev);
1549 vxge_debug_init(VXGE_ERR,
1550 "fatal: %s: Disabling device due to"
1551 "serious error",
1552 vdev->ndev->name);
1553 ret = -EPERM;
1554 goto out;
1555 case VXGE_HW_EVENT_SRPCIM_SERR:
1556 case VXGE_HW_EVENT_MRPCIM_SERR:
1557 ret = -EPERM;
1558 goto out;
1559 case VXGE_HW_EVENT_SLOT_FREEZE:
1560 vxge_stop_all_tx_queue(vdev);
1561 vxge_debug_init(VXGE_ERR,
1562 "fatal: %s: Disabling device due to"
1563 "slot freeze",
1564 vdev->ndev->name);
1565 ret = -EPERM;
1566 goto out;
1567 default:
1568 break;
1569
1570 }
1571 }
1572
1573 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1574 vxge_stop_all_tx_queue(vdev);
1575
1576 if (event == VXGE_LL_FULL_RESET) {
1577 status = vxge_reset_all_vpaths(vdev);
1578 if (status != VXGE_HW_OK) {
1579 vxge_debug_init(VXGE_ERR,
1580 "fatal: %s: can not reset vpaths",
1581 vdev->ndev->name);
1582 ret = -EPERM;
1583 goto out;
1584 }
1585 }
1586
1587 if (event == VXGE_LL_COMPL_RESET) {
1588 for (i = 0; i < vdev->no_of_vpath; i++)
1589 if (vdev->vpaths[i].handle) {
1590 if (vxge_hw_vpath_recover_from_reset(
1591 vdev->vpaths[i].handle)
1592 != VXGE_HW_OK) {
1593 vxge_debug_init(VXGE_ERR,
1594 "vxge_hw_vpath_recover_"
1595 "from_reset failed for vpath: "
1596 "%d", i);
1597 ret = -EPERM;
1598 goto out;
1599 }
1600 } else {
1601 vxge_debug_init(VXGE_ERR,
1602 "vxge_hw_vpath_reset failed for "
1603 "vpath:%d", i);
1604 ret = -EPERM;
1605 goto out;
1606 }
1607 }
1608
1609 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1610 /* Reprogram the DA table with populated mac addresses */
1611 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1612 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1613 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1614 }
1615
1616 /* enable vpath interrupts */
1617 for (i = 0; i < vdev->no_of_vpath; i++)
1618 vxge_vpath_intr_enable(vdev, i);
1619
1620 vxge_hw_device_intr_enable(vdev->devh);
1621
1622 smp_wmb();
1623
1624 /* Indicate card up */
1625 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1626
1627 /* Get the traffic to flow through the vpaths */
1628 for (i = 0; i < vdev->no_of_vpath; i++) {
1629 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1630 smp_wmb();
1631 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1632 }
1633
1634 vxge_wake_all_tx_queue(vdev);
1635 }
1636
1637out:
1638 vxge_debug_entryexit(VXGE_TRACE,
1639 "%s:%d Exiting...", __func__, __LINE__);
1640
1641 /* Indicate reset done */
1642 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1643 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1644 return ret;
1645}
1646
1647/*
1648 * vxge_reset
1649 * @vdev: pointer to ll device
1650 *
1651 * driver may reset the chip on events of serr, eccerr, etc
1652 */
1653int vxge_reset(struct vxgedev *vdev)
1654{
1655 do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1656 return 0;
1657}
1658
1659/**
1660 * vxge_poll - Receive handler when Receive Polling is used.
1661 * @dev: pointer to the device structure.
1662 * @budget: Number of packets budgeted to be processed in this iteration.
1663 *
1664 * This function comes into picture only if Receive side is being handled
1665 * through polling (called NAPI in linux). It mostly does what the normal
1666 * Rx interrupt handler does in terms of descriptor and packet processing
1667 * but not in an interrupt context. Also it will process a specified number
1668 * of packets at most in one iteration. This value is passed down by the
1669 * kernel as the function argument 'budget'.
1670 */
1671static int vxge_poll_msix(struct napi_struct *napi, int budget)
1672{
1673 struct vxge_ring *ring =
1674 container_of(napi, struct vxge_ring, napi);
1675 int budget_org = budget;
1676 ring->budget = budget;
1677
1678 vxge_hw_vpath_poll_rx(ring->handle);
1679
1680 if (ring->pkts_processed < budget_org) {
1681 napi_complete(napi);
1682 /* Re enable the Rx interrupts for the vpath */
1683 vxge_hw_channel_msix_unmask(
1684 (struct __vxge_hw_channel *)ring->handle,
1685 ring->rx_vector_no);
1686 }
1687
1688 return ring->pkts_processed;
1689}
1690
1691static int vxge_poll_inta(struct napi_struct *napi, int budget)
1692{
1693 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1694 int pkts_processed = 0;
1695 int i;
1696 int budget_org = budget;
1697 struct vxge_ring *ring;
1698
1699 struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)
1700 pci_get_drvdata(vdev->pdev);
1701
1702 for (i = 0; i < vdev->no_of_vpath; i++) {
1703 ring = &vdev->vpaths[i].ring;
1704 ring->budget = budget;
1705 vxge_hw_vpath_poll_rx(ring->handle);
1706 pkts_processed += ring->pkts_processed;
1707 budget -= ring->pkts_processed;
1708 if (budget <= 0)
1709 break;
1710 }
1711
1712 VXGE_COMPLETE_ALL_TX(vdev);
1713
1714 if (pkts_processed < budget_org) {
1715 napi_complete(napi);
1716 /* Re enable the Rx interrupts for the ring */
1717 vxge_hw_device_unmask_all(hldev);
1718 vxge_hw_device_flush_io(hldev);
1719 }
1720
1721 return pkts_processed;
1722}
1723
1724#ifdef CONFIG_NET_POLL_CONTROLLER
1725/**
1726 * vxge_netpoll - netpoll event handler entry point
1727 * @dev : pointer to the device structure.
1728 * Description:
1729 * This function will be called by upper layer to check for events on the
1730 * interface in situations where interrupts are disabled. It is used for
1731 * specific in-kernel networking tasks, such as remote consoles and kernel
1732 * debugging over the network (example netdump in RedHat).
1733 */
1734static void vxge_netpoll(struct net_device *dev)
1735{
1736 struct __vxge_hw_device *hldev;
1737 struct vxgedev *vdev;
1738
1739 vdev = (struct vxgedev *)netdev_priv(dev);
1740 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1741
1742 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1743
1744 if (pci_channel_offline(vdev->pdev))
1745 return;
1746
1747 disable_irq(dev->irq);
1748 vxge_hw_device_clear_tx_rx(hldev);
1749
1750 vxge_hw_device_clear_tx_rx(hldev);
1751 VXGE_COMPLETE_ALL_RX(vdev);
1752 VXGE_COMPLETE_ALL_TX(vdev);
1753
1754 enable_irq(dev->irq);
1755
1756 vxge_debug_entryexit(VXGE_TRACE,
1757 "%s:%d Exiting...", __func__, __LINE__);
1758 return;
1759}
1760#endif
1761
1762/* RTH configuration */
1763static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1764{
1765 enum vxge_hw_status status = VXGE_HW_OK;
1766 struct vxge_hw_rth_hash_types hash_types;
1767 u8 itable[256] = {0}; /* indirection table */
1768 u8 mtable[256] = {0}; /* CPU to vpath mapping */
1769 int index;
1770
1771 /*
1772 * Filling
1773 * - itable with bucket numbers
1774 * - mtable with bucket-to-vpath mapping
1775 */
1776 for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1777 itable[index] = index;
1778 mtable[index] = index % vdev->no_of_vpath;
1779 }
1780
1781 /* Fill RTH hash types */
1782 hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4;
1783 hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4;
1784 hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6;
1785 hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6;
1786 hash_types.hash_type_tcpipv6ex_en =
1787 vdev->config.rth_hash_type_tcpipv6ex;
1788 hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex;
1789
1790 /* set indirection table, bucket-to-vpath mapping */
1791 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1792 vdev->no_of_vpath,
1793 mtable, itable,
1794 vdev->config.rth_bkt_sz);
1795 if (status != VXGE_HW_OK) {
1796 vxge_debug_init(VXGE_ERR,
1797 "RTH indirection table configuration failed "
1798 "for vpath:%d", vdev->vpaths[0].device_id);
1799 return status;
1800 }
1801
1802 /*
1803 * Because the itable_set() method uses the active_table field
1804 * for the target virtual path the RTH config should be updated
1805 * for all VPATHs. The h/w only uses the lowest numbered VPATH
1806 * when steering frames.
1807 */
1808 for (index = 0; index < vdev->no_of_vpath; index++) {
1809 status = vxge_hw_vpath_rts_rth_set(
1810 vdev->vpaths[index].handle,
1811 vdev->config.rth_algorithm,
1812 &hash_types,
1813 vdev->config.rth_bkt_sz);
1814
1815 if (status != VXGE_HW_OK) {
1816 vxge_debug_init(VXGE_ERR,
1817 "RTH configuration failed for vpath:%d",
1818 vdev->vpaths[index].device_id);
1819 return status;
1820 }
1821 }
1822
1823 return status;
1824}
1825
1826int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1827{
1828 struct vxge_mac_addrs *new_mac_entry;
1829 u8 *mac_address = NULL;
1830
1831 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1832 return TRUE;
1833
1834 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1835 if (!new_mac_entry) {
1836 vxge_debug_mem(VXGE_ERR,
1837 "%s: memory allocation failed",
1838 VXGE_DRIVER_NAME);
1839 return FALSE;
1840 }
1841
1842 list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1843
1844 /* Copy the new mac address to the list */
1845 mac_address = (u8 *)&new_mac_entry->macaddr;
1846 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1847
1848 new_mac_entry->state = mac->state;
1849 vpath->mac_addr_cnt++;
1850
1851 /* Is this a multicast address */
1852 if (0x01 & mac->macaddr[0])
1853 vpath->mcast_addr_cnt++;
1854
1855 return TRUE;
1856}
1857
1858/* Add a mac address to DA table */
1859enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1860{
1861 enum vxge_hw_status status = VXGE_HW_OK;
1862 struct vxge_vpath *vpath;
1863 enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1864
1865 if (0x01 & mac->macaddr[0]) /* multicast address */
1866 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1867 else
1868 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1869
1870 vpath = &vdev->vpaths[mac->vpath_no];
1871 status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1872 mac->macmask, duplicate_mode);
1873 if (status != VXGE_HW_OK) {
1874 vxge_debug_init(VXGE_ERR,
1875 "DA config add entry failed for vpath:%d",
1876 vpath->device_id);
1877 } else
1878 if (FALSE == vxge_mac_list_add(vpath, mac))
1879 status = -EPERM;
1880
1881 return status;
1882}
1883
1884int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1885{
1886 struct list_head *entry, *next;
1887 u64 del_mac = 0;
1888 u8 *mac_address = (u8 *) (&del_mac);
1889
1890 /* Copy the mac address to delete from the list */
1891 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1892
1893 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1894 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1895 list_del(entry);
1896 kfree((struct vxge_mac_addrs *)entry);
1897 vpath->mac_addr_cnt--;
1898
1899 /* Is this a multicast address */
1900 if (0x01 & mac->macaddr[0])
1901 vpath->mcast_addr_cnt--;
1902 return TRUE;
1903 }
1904 }
1905
1906 return FALSE;
1907}
1908/* delete a mac address from DA table */
1909enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1910{
1911 enum vxge_hw_status status = VXGE_HW_OK;
1912 struct vxge_vpath *vpath;
1913
1914 vpath = &vdev->vpaths[mac->vpath_no];
1915 status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1916 mac->macmask);
1917 if (status != VXGE_HW_OK) {
1918 vxge_debug_init(VXGE_ERR,
1919 "DA config delete entry failed for vpath:%d",
1920 vpath->device_id);
1921 } else
1922 vxge_mac_list_del(vpath, mac);
1923 return status;
1924}
1925
1926/* list all mac addresses from DA table */
1927enum vxge_hw_status
1928static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1929 struct macInfo *mac)
1930{
1931 enum vxge_hw_status status = VXGE_HW_OK;
1932 unsigned char macmask[ETH_ALEN];
1933 unsigned char macaddr[ETH_ALEN];
1934
1935 status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1936 macaddr, macmask);
1937 if (status != VXGE_HW_OK) {
1938 vxge_debug_init(VXGE_ERR,
1939 "DA config list entry failed for vpath:%d",
1940 vpath->device_id);
1941 return status;
1942 }
1943
1944 while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1945
1946 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1947 macaddr, macmask);
1948 if (status != VXGE_HW_OK)
1949 break;
1950 }
1951
1952 return status;
1953}
1954
1955/* Store all vlan ids from the list to the vid table */
1956enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1957{
1958 enum vxge_hw_status status = VXGE_HW_OK;
1959 struct vxgedev *vdev = vpath->vdev;
1960 u16 vid;
1961
1962 if (vdev->vlgrp && vpath->is_open) {
1963
1964 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1965 if (!vlan_group_get_device(vdev->vlgrp, vid))
1966 continue;
1967 /* Add these vlan to the vid table */
1968 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1969 }
1970 }
1971
1972 return status;
1973}
1974
1975/* Store all mac addresses from the list to the DA table */
1976enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1977{
1978 enum vxge_hw_status status = VXGE_HW_OK;
1979 struct macInfo mac_info;
1980 u8 *mac_address = NULL;
1981 struct list_head *entry, *next;
1982
1983 memset(&mac_info, 0, sizeof(struct macInfo));
1984
1985 if (vpath->is_open) {
1986
1987 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1988 mac_address =
1989 (u8 *)&
1990 ((struct vxge_mac_addrs *)entry)->macaddr;
1991 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1992 ((struct vxge_mac_addrs *)entry)->state =
1993 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1994 /* does this mac address already exist in da table? */
1995 status = vxge_search_mac_addr_in_da_table(vpath,
1996 &mac_info);
1997 if (status != VXGE_HW_OK) {
1998 /* Add this mac address to the DA table */
1999 status = vxge_hw_vpath_mac_addr_add(
2000 vpath->handle, mac_info.macaddr,
2001 mac_info.macmask,
2002 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2003 if (status != VXGE_HW_OK) {
2004 vxge_debug_init(VXGE_ERR,
2005 "DA add entry failed for vpath:%d",
2006 vpath->device_id);
2007 ((struct vxge_mac_addrs *)entry)->state
2008 = VXGE_LL_MAC_ADDR_IN_LIST;
2009 }
2010 }
2011 }
2012 }
2013
2014 return status;
2015}
2016
2017/* reset vpaths */
2018enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2019{
2020 int i;
2021 enum vxge_hw_status status = VXGE_HW_OK;
2022
2023 for (i = 0; i < vdev->no_of_vpath; i++)
2024 if (vdev->vpaths[i].handle) {
2025 if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2026 == VXGE_HW_OK) {
2027 if (is_vxge_card_up(vdev) &&
2028 vxge_hw_vpath_recover_from_reset(
2029 vdev->vpaths[i].handle)
2030 != VXGE_HW_OK) {
2031 vxge_debug_init(VXGE_ERR,
2032 "vxge_hw_vpath_recover_"
2033 "from_reset failed for vpath: "
2034 "%d", i);
2035 return status;
2036 }
2037 } else {
2038 vxge_debug_init(VXGE_ERR,
2039 "vxge_hw_vpath_reset failed for "
2040 "vpath:%d", i);
2041 return status;
2042 }
2043 }
2044 return status;
2045}
2046
2047/* close vpaths */
2048void vxge_close_vpaths(struct vxgedev *vdev, int index)
2049{
2050 int i;
2051 for (i = index; i < vdev->no_of_vpath; i++) {
2052 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2053 vxge_hw_vpath_close(vdev->vpaths[i].handle);
2054 vdev->stats.vpaths_open--;
2055 }
2056 vdev->vpaths[i].is_open = 0;
2057 vdev->vpaths[i].handle = NULL;
2058 }
2059}
2060
2061/* open vpaths */
2062int vxge_open_vpaths(struct vxgedev *vdev)
2063{
2064 enum vxge_hw_status status;
2065 int i;
2066 u32 vp_id = 0;
2067 struct vxge_hw_vpath_attr attr;
2068
2069 for (i = 0; i < vdev->no_of_vpath; i++) {
2070 vxge_assert(vdev->vpaths[i].is_configured);
2071 attr.vp_id = vdev->vpaths[i].device_id;
2072 attr.fifo_attr.callback = vxge_xmit_compl;
2073 attr.fifo_attr.txdl_term = vxge_tx_term;
2074 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2075 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2076
2077 attr.ring_attr.callback = vxge_rx_1b_compl;
2078 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2079 attr.ring_attr.rxd_term = vxge_rx_term;
2080 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2081 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2082
2083 vdev->vpaths[i].ring.ndev = vdev->ndev;
2084 vdev->vpaths[i].ring.pdev = vdev->pdev;
2085 status = vxge_hw_vpath_open(vdev->devh, &attr,
2086 &(vdev->vpaths[i].handle));
2087 if (status == VXGE_HW_OK) {
2088 vdev->vpaths[i].fifo.handle =
2089 (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2090 vdev->vpaths[i].ring.handle =
2091 (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2092 vdev->vpaths[i].fifo.tx_steering_type =
2093 vdev->config.tx_steering_type;
2094 vdev->vpaths[i].fifo.ndev = vdev->ndev;
2095 vdev->vpaths[i].fifo.pdev = vdev->pdev;
2096 vdev->vpaths[i].fifo.indicate_max_pkts =
2097 vdev->config.fifo_indicate_max_pkts;
2098 vdev->vpaths[i].ring.rx_vector_no = 0;
2099 vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2100 vdev->vpaths[i].is_open = 1;
2101 vdev->vp_handles[i] = vdev->vpaths[i].handle;
2102 vdev->vpaths[i].ring.gro_enable =
2103 vdev->config.gro_enable;
2104 vdev->vpaths[i].ring.vlan_tag_strip =
2105 vdev->vlan_tag_strip;
2106 vdev->stats.vpaths_open++;
2107 } else {
2108 vdev->stats.vpath_open_fail++;
2109 vxge_debug_init(VXGE_ERR,
2110 "%s: vpath: %d failed to open "
2111 "with status: %d",
2112 vdev->ndev->name, vdev->vpaths[i].device_id,
2113 status);
2114 vxge_close_vpaths(vdev, 0);
2115 return -EPERM;
2116 }
2117
2118 vp_id =
2119 ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2120 vpath->vp_id;
2121 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2122 }
2123 return VXGE_HW_OK;
2124}
2125
2126/*
2127 * vxge_isr_napi
2128 * @irq: the irq of the device.
2129 * @dev_id: a void pointer to the hldev structure of the Titan device
2130 * @ptregs: pointer to the registers pushed on the stack.
2131 *
2132 * This function is the ISR handler of the device when napi is enabled. It
2133 * identifies the reason for the interrupt and calls the relevant service
2134 * routines.
2135 */
2136static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2137{
2138 struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)dev_id;
2139 struct vxgedev *vdev;
2140 struct net_device *dev;
2141 u64 reason;
2142 enum vxge_hw_status status;
2143
2144 vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2145
2146 dev = hldev->ndev;
2147 vdev = netdev_priv(dev);
2148
2149 if (pci_channel_offline(vdev->pdev))
2150 return IRQ_NONE;
2151
2152 if (unlikely(!is_vxge_card_up(vdev)))
2153 return IRQ_NONE;
2154
2155 status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2156 &reason);
2157 if (status == VXGE_HW_OK) {
2158 vxge_hw_device_mask_all(hldev);
2159
2160 if (reason &
2161 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2162 vdev->vpaths_deployed >>
2163 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2164
2165 vxge_hw_device_clear_tx_rx(hldev);
2166 napi_schedule(&vdev->napi);
2167 vxge_debug_intr(VXGE_TRACE,
2168 "%s:%d Exiting...", __func__, __LINE__);
2169 return IRQ_HANDLED;
2170 } else
2171 vxge_hw_device_unmask_all(hldev);
2172 } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2173 (status == VXGE_HW_ERR_CRITICAL) ||
2174 (status == VXGE_HW_ERR_FIFO))) {
2175 vxge_hw_device_mask_all(hldev);
2176 vxge_hw_device_flush_io(hldev);
2177 return IRQ_HANDLED;
2178 } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2179 return IRQ_HANDLED;
2180
2181 vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__);
2182 return IRQ_NONE;
2183}
2184
2185#ifdef CONFIG_PCI_MSI
2186
2187static irqreturn_t
2188vxge_tx_msix_handle(int irq, void *dev_id)
2189{
2190 struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2191
2192 VXGE_COMPLETE_VPATH_TX(fifo);
2193
2194 return IRQ_HANDLED;
2195}
2196
2197static irqreturn_t
2198vxge_rx_msix_napi_handle(int irq, void *dev_id)
2199{
2200 struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2201
2202 /* MSIX_IDX for Rx is 1 */
2203 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2204 ring->rx_vector_no);
2205
2206 napi_schedule(&ring->napi);
2207 return IRQ_HANDLED;
2208}
2209
2210static irqreturn_t
2211vxge_alarm_msix_handle(int irq, void *dev_id)
2212{
2213 int i;
2214 enum vxge_hw_status status;
2215 struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2216 struct vxgedev *vdev = vpath->vdev;
2217 int alarm_msix_id =
2218 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2219
2220 for (i = 0; i < vdev->no_of_vpath; i++) {
2221 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2222 alarm_msix_id);
2223
2224 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2225 vdev->exec_mode);
2226 if (status == VXGE_HW_OK) {
2227
2228 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2229 alarm_msix_id);
2230 continue;
2231 }
2232 vxge_debug_intr(VXGE_ERR,
2233 "%s: vxge_hw_vpath_alarm_process failed %x ",
2234 VXGE_DRIVER_NAME, status);
2235 }
2236 return IRQ_HANDLED;
2237}
2238
2239static int vxge_alloc_msix(struct vxgedev *vdev)
2240{
2241 int j, i, ret = 0;
2242 int intr_cnt = 0;
2243 int alarm_msix_id = 0, msix_intr_vect = 0;
2244 vdev->intr_cnt = 0;
2245
2246 /* Tx/Rx MSIX Vectors count */
2247 vdev->intr_cnt = vdev->no_of_vpath * 2;
2248
2249 /* Alarm MSIX Vectors count */
2250 vdev->intr_cnt++;
2251
2252 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2253 vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2254 GFP_KERNEL);
2255 if (!vdev->entries) {
2256 vxge_debug_init(VXGE_ERR,
2257 "%s: memory allocation failed",
2258 VXGE_DRIVER_NAME);
2259 return -ENOMEM;
2260 }
2261
2262 vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2263 GFP_KERNEL);
2264 if (!vdev->vxge_entries) {
2265 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2266 VXGE_DRIVER_NAME);
2267 kfree(vdev->entries);
2268 return -ENOMEM;
2269 }
2270
2271 /* Last vector in the list is used for alarm */
2272 alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2273 for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2274
2275 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2276
2277 /* Initialize the fifo vector */
2278 vdev->entries[j].entry = msix_intr_vect;
2279 vdev->vxge_entries[j].entry = msix_intr_vect;
2280 vdev->vxge_entries[j].in_use = 0;
2281 j++;
2282
2283 /* Initialize the ring vector */
2284 vdev->entries[j].entry = msix_intr_vect + 1;
2285 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2286 vdev->vxge_entries[j].in_use = 0;
2287 j++;
2288 }
2289
2290 /* Initialize the alarm vector */
2291 vdev->entries[j].entry = alarm_msix_id;
2292 vdev->vxge_entries[j].entry = alarm_msix_id;
2293 vdev->vxge_entries[j].in_use = 0;
2294
2295 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2296 /* if driver request exceeeds available irq's, request with a small
2297 * number.
2298 */
2299 if (ret > 0) {
2300 vxge_debug_init(VXGE_ERR,
2301 "%s: MSI-X enable failed for %d vectors, available: %d",
2302 VXGE_DRIVER_NAME, intr_cnt, ret);
2303 vdev->max_vpath_supported = vdev->no_of_vpath;
2304 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2305
2306 /* Reset the alarm vector setting */
2307 vdev->entries[j].entry = 0;
2308 vdev->vxge_entries[j].entry = 0;
2309
2310 /* Initialize the alarm vector with new setting */
2311 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2312 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2313 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2314
2315 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2316 if (!ret)
2317 vxge_debug_init(VXGE_ERR,
2318 "%s: MSI-X enabled for %d vectors",
2319 VXGE_DRIVER_NAME, intr_cnt);
2320 }
2321
2322 if (ret) {
2323 vxge_debug_init(VXGE_ERR,
2324 "%s: MSI-X enable failed for %d vectors, ret: %d",
2325 VXGE_DRIVER_NAME, intr_cnt, ret);
2326 kfree(vdev->entries);
2327 kfree(vdev->vxge_entries);
2328 vdev->entries = NULL;
2329 vdev->vxge_entries = NULL;
2330 return -ENODEV;
2331 }
2332 return 0;
2333}
2334
2335static int vxge_enable_msix(struct vxgedev *vdev)
2336{
2337
2338 int i, ret = 0;
2339 enum vxge_hw_status status;
2340 /* 0 - Tx, 1 - Rx */
2341 int tim_msix_id[4];
2342 int alarm_msix_id = 0, msix_intr_vect = 0;;
2343 vdev->intr_cnt = 0;
2344
2345 /* allocate msix vectors */
2346 ret = vxge_alloc_msix(vdev);
2347 if (!ret) {
2348 /* Last vector in the list is used for alarm */
2349 alarm_msix_id =
2350 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2351 for (i = 0; i < vdev->no_of_vpath; i++) {
2352
2353 /* If fifo or ring are not enabled
2354 the MSIX vector for that should be set to 0
2355 Hence initializeing this array to all 0s.
2356 */
2357 memset(tim_msix_id, 0, sizeof(tim_msix_id));
2358 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2359 tim_msix_id[0] = msix_intr_vect;
2360
2361 tim_msix_id[1] = msix_intr_vect + 1;
2362 vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2363
2364 status = vxge_hw_vpath_msix_set(
2365 vdev->vpaths[i].handle,
2366 tim_msix_id, alarm_msix_id);
2367 if (status != VXGE_HW_OK) {
2368 vxge_debug_init(VXGE_ERR,
2369 "vxge_hw_vpath_msix_set "
2370 "failed with status : %x", status);
2371 kfree(vdev->entries);
2372 kfree(vdev->vxge_entries);
2373 pci_disable_msix(vdev->pdev);
2374 return -ENODEV;
2375 }
2376 }
2377 }
2378
2379 return ret;
2380}
2381
2382static void vxge_rem_msix_isr(struct vxgedev *vdev)
2383{
2384 int intr_cnt;
2385
2386 for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2387 intr_cnt++) {
2388 if (vdev->vxge_entries[intr_cnt].in_use) {
2389 synchronize_irq(vdev->entries[intr_cnt].vector);
2390 free_irq(vdev->entries[intr_cnt].vector,
2391 vdev->vxge_entries[intr_cnt].arg);
2392 vdev->vxge_entries[intr_cnt].in_use = 0;
2393 }
2394 }
2395
2396 kfree(vdev->entries);
2397 kfree(vdev->vxge_entries);
2398 vdev->entries = NULL;
2399 vdev->vxge_entries = NULL;
2400
2401 if (vdev->config.intr_type == MSI_X)
2402 pci_disable_msix(vdev->pdev);
2403}
2404#endif
2405
2406static void vxge_rem_isr(struct vxgedev *vdev)
2407{
2408 struct __vxge_hw_device *hldev;
2409 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2410
2411#ifdef CONFIG_PCI_MSI
2412 if (vdev->config.intr_type == MSI_X) {
2413 vxge_rem_msix_isr(vdev);
2414 } else
2415#endif
2416 if (vdev->config.intr_type == INTA) {
2417 synchronize_irq(vdev->pdev->irq);
2418 free_irq(vdev->pdev->irq, hldev);
2419 }
2420}
2421
2422static int vxge_add_isr(struct vxgedev *vdev)
2423{
2424 int ret = 0;
2425 struct __vxge_hw_device *hldev =
2426 (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2427#ifdef CONFIG_PCI_MSI
2428 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2429 u64 function_mode = vdev->config.device_hw_info.function_mode;
2430 int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2431
2432 if (vdev->config.intr_type == MSI_X)
2433 ret = vxge_enable_msix(vdev);
2434
2435 if (ret) {
2436 vxge_debug_init(VXGE_ERR,
2437 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2438 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2439 test_and_set_bit(__VXGE_STATE_CARD_UP,
2440 &driver_config->inta_dev_open))
2441 return VXGE_HW_FAIL;
2442 else {
2443 vxge_debug_init(VXGE_ERR,
2444 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2445 vdev->config.intr_type = INTA;
2446 vxge_hw_device_set_intr_type(vdev->devh,
2447 VXGE_HW_INTR_MODE_IRQLINE);
2448 vxge_close_vpaths(vdev, 1);
2449 vdev->no_of_vpath = 1;
2450 vdev->stats.vpaths_open = 1;
2451 }
2452 }
2453
2454 if (vdev->config.intr_type == MSI_X) {
2455 for (intr_idx = 0;
2456 intr_idx < (vdev->no_of_vpath *
2457 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2458
2459 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2460 irq_req = 0;
2461
2462 switch (msix_idx) {
2463 case 0:
2464 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2465 "%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
2466 vdev->ndev->name, pci_fun, vp_idx,
2467 vdev->entries[intr_cnt].entry);
2468 ret = request_irq(
2469 vdev->entries[intr_cnt].vector,
2470 vxge_tx_msix_handle, 0,
2471 vdev->desc[intr_cnt],
2472 &vdev->vpaths[vp_idx].fifo);
2473 vdev->vxge_entries[intr_cnt].arg =
2474 &vdev->vpaths[vp_idx].fifo;
2475 irq_req = 1;
2476 break;
2477 case 1:
2478 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2479 "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2480 vdev->ndev->name, pci_fun, vp_idx,
2481 vdev->entries[intr_cnt].entry);
2482 ret = request_irq(
2483 vdev->entries[intr_cnt].vector,
2484 vxge_rx_msix_napi_handle,
2485 0,
2486 vdev->desc[intr_cnt],
2487 &vdev->vpaths[vp_idx].ring);
2488 vdev->vxge_entries[intr_cnt].arg =
2489 &vdev->vpaths[vp_idx].ring;
2490 irq_req = 1;
2491 break;
2492 }
2493
2494 if (ret) {
2495 vxge_debug_init(VXGE_ERR,
2496 "%s: MSIX - %d Registration failed",
2497 vdev->ndev->name, intr_cnt);
2498 vxge_rem_msix_isr(vdev);
2499 if ((function_mode ==
2500 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2501 test_and_set_bit(__VXGE_STATE_CARD_UP,
2502 &driver_config->inta_dev_open))
2503 return VXGE_HW_FAIL;
2504 else {
2505 vxge_hw_device_set_intr_type(
2506 vdev->devh,
2507 VXGE_HW_INTR_MODE_IRQLINE);
2508 vdev->config.intr_type = INTA;
2509 vxge_debug_init(VXGE_ERR,
2510 "%s: Defaulting to INTA"
2511 , vdev->ndev->name);
2512 vxge_close_vpaths(vdev, 1);
2513 vdev->no_of_vpath = 1;
2514 vdev->stats.vpaths_open = 1;
2515 goto INTA_MODE;
2516 }
2517 }
2518
2519 if (irq_req) {
2520 /* We requested for this msix interrupt */
2521 vdev->vxge_entries[intr_cnt].in_use = 1;
2522 vxge_hw_vpath_msix_unmask(
2523 vdev->vpaths[vp_idx].handle,
2524 intr_idx);
2525 intr_cnt++;
2526 }
2527
2528 /* Point to next vpath handler */
2529 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
2530 && (vp_idx < (vdev->no_of_vpath - 1)))
2531 vp_idx++;
2532 }
2533
2534 intr_cnt = vdev->max_vpath_supported * 2;
2535 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2536 "%s:vxge Alarm fn: %d MSI-X: %d",
2537 vdev->ndev->name, pci_fun,
2538 vdev->entries[intr_cnt].entry);
2539 /* For Alarm interrupts */
2540 ret = request_irq(vdev->entries[intr_cnt].vector,
2541 vxge_alarm_msix_handle, 0,
2542 vdev->desc[intr_cnt],
2543 &vdev->vpaths[vp_idx]);
2544 if (ret) {
2545 vxge_debug_init(VXGE_ERR,
2546 "%s: MSIX - %d Registration failed",
2547 vdev->ndev->name, intr_cnt);
2548 vxge_rem_msix_isr(vdev);
2549 if ((function_mode ==
2550 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2551 test_and_set_bit(__VXGE_STATE_CARD_UP,
2552 &driver_config->inta_dev_open))
2553 return VXGE_HW_FAIL;
2554 else {
2555 vxge_hw_device_set_intr_type(vdev->devh,
2556 VXGE_HW_INTR_MODE_IRQLINE);
2557 vdev->config.intr_type = INTA;
2558 vxge_debug_init(VXGE_ERR,
2559 "%s: Defaulting to INTA",
2560 vdev->ndev->name);
2561 vxge_close_vpaths(vdev, 1);
2562 vdev->no_of_vpath = 1;
2563 vdev->stats.vpaths_open = 1;
2564 goto INTA_MODE;
2565 }
2566 }
2567
2568 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2569 intr_idx - 2);
2570 vdev->vxge_entries[intr_cnt].in_use = 1;
2571 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2572 }
2573INTA_MODE:
2574#endif
2575 snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2576
2577 if (vdev->config.intr_type == INTA) {
2578 ret = request_irq((int) vdev->pdev->irq,
2579 vxge_isr_napi,
2580 IRQF_SHARED, vdev->desc[0], hldev);
2581 if (ret) {
2582 vxge_debug_init(VXGE_ERR,
2583 "%s %s-%d: ISR registration failed",
2584 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2585 return -ENODEV;
2586 }
2587 vxge_debug_init(VXGE_TRACE,
2588 "new %s-%d line allocated",
2589 "IRQ", vdev->pdev->irq);
2590 }
2591
2592 return VXGE_HW_OK;
2593}
2594
2595static void vxge_poll_vp_reset(unsigned long data)
2596{
2597 struct vxgedev *vdev = (struct vxgedev *)data;
2598 int i, j = 0;
2599
2600 for (i = 0; i < vdev->no_of_vpath; i++) {
2601 if (test_bit(i, &vdev->vp_reset)) {
2602 vxge_reset_vpath(vdev, i);
2603 j++;
2604 }
2605 }
2606 if (j && (vdev->config.intr_type != MSI_X)) {
2607 vxge_hw_device_unmask_all(vdev->devh);
2608 vxge_hw_device_flush_io(vdev->devh);
2609 }
2610
2611 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2612}
2613
2614static void vxge_poll_vp_lockup(unsigned long data)
2615{
2616 struct vxgedev *vdev = (struct vxgedev *)data;
2617 int i;
2618 struct vxge_ring *ring;
2619 enum vxge_hw_status status = VXGE_HW_OK;
2620
2621 for (i = 0; i < vdev->no_of_vpath; i++) {
2622 ring = &vdev->vpaths[i].ring;
2623 /* Did this vpath received any packets */
2624 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2625 status = vxge_hw_vpath_check_leak(ring->handle);
2626
2627 /* Did it received any packets last time */
2628 if ((VXGE_HW_FAIL == status) &&
2629 (VXGE_HW_FAIL == ring->last_status)) {
2630
2631 /* schedule vpath reset */
2632 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2633
2634 /* disable interrupts for this vpath */
2635 vxge_vpath_intr_disable(vdev, i);
2636
2637 /* stop the queue for this vpath */
2638 vxge_stop_tx_queue(&vdev->vpaths[i].
2639 fifo);
2640 continue;
2641 }
2642 }
2643 }
2644 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2645 ring->last_status = status;
2646 }
2647
2648 /* Check every 1 milli second */
2649 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2650}
2651
2652/**
2653 * vxge_open
2654 * @dev: pointer to the device structure.
2655 *
2656 * This function is the open entry point of the driver. It mainly calls a
2657 * function to allocate Rx buffers and inserts them into the buffer
2658 * descriptors and then enables the Rx part of the NIC.
2659 * Return value: '0' on success and an appropriate (-)ve integer as
2660 * defined in errno.h file on failure.
2661 */
2662int
2663vxge_open(struct net_device *dev)
2664{
2665 enum vxge_hw_status status;
2666 struct vxgedev *vdev;
2667 struct __vxge_hw_device *hldev;
2668 int ret = 0;
2669 int i;
2670 u64 val64, function_mode;
2671 vxge_debug_entryexit(VXGE_TRACE,
2672 "%s: %s:%d", dev->name, __func__, __LINE__);
2673
2674 vdev = (struct vxgedev *)netdev_priv(dev);
2675 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2676 function_mode = vdev->config.device_hw_info.function_mode;
2677
2678 /* make sure you have link off by default every time Nic is
2679 * initialized */
2680 netif_carrier_off(dev);
2681
2682 /* Check for another device already opn with INTA */
2683 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2684 test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
2685 ret = -EPERM;
2686 goto out0;
2687 }
2688
2689 /* Open VPATHs */
2690 status = vxge_open_vpaths(vdev);
2691 if (status != VXGE_HW_OK) {
2692 vxge_debug_init(VXGE_ERR,
2693 "%s: fatal: Vpath open failed", vdev->ndev->name);
2694 ret = -EPERM;
2695 goto out0;
2696 }
2697
2698 vdev->mtu = dev->mtu;
2699
2700 status = vxge_add_isr(vdev);
2701 if (status != VXGE_HW_OK) {
2702 vxge_debug_init(VXGE_ERR,
2703 "%s: fatal: ISR add failed", dev->name);
2704 ret = -EPERM;
2705 goto out1;
2706 }
2707
2708
2709 if (vdev->config.intr_type != MSI_X) {
2710 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2711 vdev->config.napi_weight);
2712 napi_enable(&vdev->napi);
2713 } else {
2714 for (i = 0; i < vdev->no_of_vpath; i++) {
2715 netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2716 vxge_poll_msix, vdev->config.napi_weight);
2717 napi_enable(&vdev->vpaths[i].ring.napi);
2718 }
2719 }
2720
2721 /* configure RTH */
2722 if (vdev->config.rth_steering) {
2723 status = vxge_rth_configure(vdev);
2724 if (status != VXGE_HW_OK) {
2725 vxge_debug_init(VXGE_ERR,
2726 "%s: fatal: RTH configuration failed",
2727 dev->name);
2728 ret = -EPERM;
2729 goto out2;
2730 }
2731 }
2732
2733 for (i = 0; i < vdev->no_of_vpath; i++) {
2734 /* set initial mtu before enabling the device */
2735 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2736 vdev->mtu);
2737 if (status != VXGE_HW_OK) {
2738 vxge_debug_init(VXGE_ERR,
2739 "%s: fatal: can not set new MTU", dev->name);
2740 ret = -EPERM;
2741 goto out2;
2742 }
2743 }
2744
2745 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2746 vxge_debug_init(vdev->level_trace,
2747 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2748 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2749
2750 /* Reprogram the DA table with populated mac addresses */
2751 for (i = 0; i < vdev->no_of_vpath; i++) {
2752 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2753 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2754 }
2755
2756 /* Enable vpath to sniff all unicast/multicast traffic that not
2757 * addressed to them. We allow promiscous mode for PF only
2758 */
2759
2760 val64 = 0;
2761 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2762 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2763
2764 vxge_hw_mgmt_reg_write(vdev->devh,
2765 vxge_hw_mgmt_reg_type_mrpcim,
2766 0,
2767 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2768 rxmac_authorize_all_addr),
2769 val64);
2770
2771 vxge_hw_mgmt_reg_write(vdev->devh,
2772 vxge_hw_mgmt_reg_type_mrpcim,
2773 0,
2774 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2775 rxmac_authorize_all_vid),
2776 val64);
2777
2778 vxge_set_multicast(dev);
2779
2780 /* Enabling Bcast and mcast for all vpath */
2781 for (i = 0; i < vdev->no_of_vpath; i++) {
2782 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2783 if (status != VXGE_HW_OK)
2784 vxge_debug_init(VXGE_ERR,
2785 "%s : Can not enable bcast for vpath "
2786 "id %d", dev->name, i);
2787 if (vdev->config.addr_learn_en) {
2788 status =
2789 vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2790 if (status != VXGE_HW_OK)
2791 vxge_debug_init(VXGE_ERR,
2792 "%s : Can not enable mcast for vpath "
2793 "id %d", dev->name, i);
2794 }
2795 }
2796
2797 vxge_hw_device_setpause_data(vdev->devh, 0,
2798 vdev->config.tx_pause_enable,
2799 vdev->config.rx_pause_enable);
2800
2801 if (vdev->vp_reset_timer.function == NULL)
2802 vxge_os_timer(vdev->vp_reset_timer,
2803 vxge_poll_vp_reset, vdev, (HZ/2));
2804
2805 if (vdev->vp_lockup_timer.function == NULL)
2806 vxge_os_timer(vdev->vp_lockup_timer,
2807 vxge_poll_vp_lockup, vdev, (HZ/2));
2808
2809 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2810
2811 smp_wmb();
2812
2813 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2814 netif_carrier_on(vdev->ndev);
2815 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2816 vdev->stats.link_up++;
2817 }
2818
2819 vxge_hw_device_intr_enable(vdev->devh);
2820
2821 smp_wmb();
2822
2823 for (i = 0; i < vdev->no_of_vpath; i++) {
2824 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2825 smp_wmb();
2826 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2827 }
2828
2829 vxge_start_all_tx_queue(vdev);
2830 goto out0;
2831
2832out2:
2833 vxge_rem_isr(vdev);
2834
2835 /* Disable napi */
2836 if (vdev->config.intr_type != MSI_X)
2837 napi_disable(&vdev->napi);
2838 else {
2839 for (i = 0; i < vdev->no_of_vpath; i++)
2840 napi_disable(&vdev->vpaths[i].ring.napi);
2841 }
2842
2843out1:
2844 vxge_close_vpaths(vdev, 0);
2845out0:
2846 vxge_debug_entryexit(VXGE_TRACE,
2847 "%s: %s:%d Exiting...",
2848 dev->name, __func__, __LINE__);
2849 return ret;
2850}
2851
2852/* Loop throught the mac address list and delete all the entries */
2853void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2854{
2855
2856 struct list_head *entry, *next;
2857 if (list_empty(&vpath->mac_addr_list))
2858 return;
2859
2860 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2861 list_del(entry);
2862 kfree((struct vxge_mac_addrs *)entry);
2863 }
2864}
2865
2866static void vxge_napi_del_all(struct vxgedev *vdev)
2867{
2868 int i;
2869 if (vdev->config.intr_type != MSI_X)
2870 netif_napi_del(&vdev->napi);
2871 else {
2872 for (i = 0; i < vdev->no_of_vpath; i++)
2873 netif_napi_del(&vdev->vpaths[i].ring.napi);
2874 }
2875 return;
2876}
2877
2878int do_vxge_close(struct net_device *dev, int do_io)
2879{
2880 enum vxge_hw_status status;
2881 struct vxgedev *vdev;
2882 struct __vxge_hw_device *hldev;
2883 int i;
2884 u64 val64, vpath_vector;
2885 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2886 dev->name, __func__, __LINE__);
2887
2888 vdev = (struct vxgedev *)netdev_priv(dev);
2889 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2890
2891 /* If vxge_handle_crit_err task is executing,
2892 * wait till it completes. */
2893 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2894 msleep(50);
2895
2896 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2897 if (do_io) {
2898 /* Put the vpath back in normal mode */
2899 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2900 status = vxge_hw_mgmt_reg_read(vdev->devh,
2901 vxge_hw_mgmt_reg_type_mrpcim,
2902 0,
2903 (ulong)offsetof(
2904 struct vxge_hw_mrpcim_reg,
2905 rts_mgr_cbasin_cfg),
2906 &val64);
2907
2908 if (status == VXGE_HW_OK) {
2909 val64 &= ~vpath_vector;
2910 status = vxge_hw_mgmt_reg_write(vdev->devh,
2911 vxge_hw_mgmt_reg_type_mrpcim,
2912 0,
2913 (ulong)offsetof(
2914 struct vxge_hw_mrpcim_reg,
2915 rts_mgr_cbasin_cfg),
2916 val64);
2917 }
2918
2919 /* Remove the function 0 from promiscous mode */
2920 vxge_hw_mgmt_reg_write(vdev->devh,
2921 vxge_hw_mgmt_reg_type_mrpcim,
2922 0,
2923 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2924 rxmac_authorize_all_addr),
2925 0);
2926
2927 vxge_hw_mgmt_reg_write(vdev->devh,
2928 vxge_hw_mgmt_reg_type_mrpcim,
2929 0,
2930 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2931 rxmac_authorize_all_vid),
2932 0);
2933
2934 smp_wmb();
2935 }
2936 del_timer_sync(&vdev->vp_lockup_timer);
2937
2938 del_timer_sync(&vdev->vp_reset_timer);
2939
2940 /* Disable napi */
2941 if (vdev->config.intr_type != MSI_X)
2942 napi_disable(&vdev->napi);
2943 else {
2944 for (i = 0; i < vdev->no_of_vpath; i++)
2945 napi_disable(&vdev->vpaths[i].ring.napi);
2946 }
2947
2948 netif_carrier_off(vdev->ndev);
2949 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2950 vxge_stop_all_tx_queue(vdev);
2951
2952 /* Note that at this point xmit() is stopped by upper layer */
2953 if (do_io)
2954 vxge_hw_device_intr_disable(vdev->devh);
2955
2956 mdelay(1000);
2957
2958 vxge_rem_isr(vdev);
2959
2960 vxge_napi_del_all(vdev);
2961
2962 if (do_io)
2963 vxge_reset_all_vpaths(vdev);
2964
2965 vxge_close_vpaths(vdev, 0);
2966
2967 vxge_debug_entryexit(VXGE_TRACE,
2968 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
2969
2970 clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
2971 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2972
2973 return 0;
2974}
2975
2976/**
2977 * vxge_close
2978 * @dev: device pointer.
2979 *
2980 * This is the stop entry point of the driver. It needs to undo exactly
2981 * whatever was done by the open entry point, thus it's usually referred to
2982 * as the close function.Among other things this function mainly stops the
2983 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2984 * Return value: '0' on success and an appropriate (-)ve integer as
2985 * defined in errno.h file on failure.
2986 */
2987int
2988vxge_close(struct net_device *dev)
2989{
2990 do_vxge_close(dev, 1);
2991 return 0;
2992}
2993
2994/**
2995 * vxge_change_mtu
2996 * @dev: net device pointer.
2997 * @new_mtu :the new MTU size for the device.
2998 *
2999 * A driver entry point to change MTU size for the device. Before changing
3000 * the MTU the device must be stopped.
3001 */
3002static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3003{
3004 struct vxgedev *vdev = netdev_priv(dev);
3005
3006 vxge_debug_entryexit(vdev->level_trace,
3007 "%s:%d", __func__, __LINE__);
3008 if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3009 vxge_debug_init(vdev->level_err,
3010 "%s: mtu size is invalid", dev->name);
3011 return -EPERM;
3012 }
3013
3014 /* check if device is down already */
3015 if (unlikely(!is_vxge_card_up(vdev))) {
3016 /* just store new value, will use later on open() */
3017 dev->mtu = new_mtu;
3018 vxge_debug_init(vdev->level_err,
3019 "%s", "device is down on MTU change");
3020 return 0;
3021 }
3022
3023 vxge_debug_init(vdev->level_trace,
3024 "trying to apply new MTU %d", new_mtu);
3025
3026 if (vxge_close(dev))
3027 return -EIO;
3028
3029 dev->mtu = new_mtu;
3030 vdev->mtu = new_mtu;
3031
3032 if (vxge_open(dev))
3033 return -EIO;
3034
3035 vxge_debug_init(vdev->level_trace,
3036 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3037
3038 vxge_debug_entryexit(vdev->level_trace,
3039 "%s:%d Exiting...", __func__, __LINE__);
3040
3041 return 0;
3042}
3043
3044/**
3045 * vxge_get_stats
3046 * @dev: pointer to the device structure
3047 *
3048 * Updates the device statistics structure. This function updates the device
3049 * statistics structure in the net_device structure and returns a pointer
3050 * to the same.
3051 */
3052static struct net_device_stats *
3053vxge_get_stats(struct net_device *dev)
3054{
3055 struct vxgedev *vdev;
3056 struct net_device_stats *net_stats;
3057 int k;
3058
3059 vdev = netdev_priv(dev);
3060
3061 net_stats = &vdev->stats.net_stats;
3062
3063 memset(net_stats, 0, sizeof(struct net_device_stats));
3064
3065 for (k = 0; k < vdev->no_of_vpath; k++) {
3066 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3067 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3068 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3069 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3070 net_stats->rx_dropped +=
3071 vdev->vpaths[k].ring.stats.rx_dropped;
3072
3073 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3074 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3075 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3076 }
3077
3078 return net_stats;
3079}
3080
3081/**
3082 * vxge_ioctl
3083 * @dev: Device pointer.
3084 * @ifr: An IOCTL specific structure, that can contain a pointer to
3085 * a proprietary structure used to pass information to the driver.
3086 * @cmd: This is used to distinguish between the different commands that
3087 * can be passed to the IOCTL functions.
3088 *
3089 * Entry point for the Ioctl.
3090 */
3091static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3092{
3093 return -EOPNOTSUPP;
3094}
3095
3096/**
3097 * vxge_tx_watchdog
3098 * @dev: pointer to net device structure
3099 *
3100 * Watchdog for transmit side.
3101 * This function is triggered if the Tx Queue is stopped
3102 * for a pre-defined amount of time when the Interface is still up.
3103 */
3104static void
3105vxge_tx_watchdog(struct net_device *dev)
3106{
3107 struct vxgedev *vdev;
3108
3109 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3110
3111 vdev = (struct vxgedev *)netdev_priv(dev);
3112
3113 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3114
3115 vxge_reset(vdev);
3116 vxge_debug_entryexit(VXGE_TRACE,
3117 "%s:%d Exiting...", __func__, __LINE__);
3118}
3119
3120/**
3121 * vxge_vlan_rx_register
3122 * @dev: net device pointer.
3123 * @grp: vlan group
3124 *
3125 * Vlan group registration
3126 */
3127static void
3128vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3129{
3130 struct vxgedev *vdev;
3131 struct vxge_vpath *vpath;
3132 int vp;
3133 u64 vid;
3134 enum vxge_hw_status status;
3135 int i;
3136
3137 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3138
3139 vdev = (struct vxgedev *)netdev_priv(dev);
3140
3141 vpath = &vdev->vpaths[0];
3142 if ((NULL == grp) && (vpath->is_open)) {
3143 /* Get the first vlan */
3144 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3145
3146 while (status == VXGE_HW_OK) {
3147
3148 /* Delete this vlan from the vid table */
3149 for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3150 vpath = &vdev->vpaths[vp];
3151 if (!vpath->is_open)
3152 continue;
3153
3154 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3155 }
3156
3157 /* Get the next vlan to be deleted */
3158 vpath = &vdev->vpaths[0];
3159 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3160 }
3161 }
3162
3163 vdev->vlgrp = grp;
3164
3165 for (i = 0; i < vdev->no_of_vpath; i++) {
3166 if (vdev->vpaths[i].is_configured)
3167 vdev->vpaths[i].ring.vlgrp = grp;
3168 }
3169
3170 vxge_debug_entryexit(VXGE_TRACE,
3171 "%s:%d Exiting...", __func__, __LINE__);
3172}
3173
3174/**
3175 * vxge_vlan_rx_add_vid
3176 * @dev: net device pointer.
3177 * @vid: vid
3178 *
3179 * Add the vlan id to the devices vlan id table
3180 */
3181static void
3182vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3183{
3184 struct vxgedev *vdev;
3185 struct vxge_vpath *vpath;
3186 int vp_id;
3187
3188 vdev = (struct vxgedev *)netdev_priv(dev);
3189
3190 /* Add these vlan to the vid table */
3191 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3192 vpath = &vdev->vpaths[vp_id];
3193 if (!vpath->is_open)
3194 continue;
3195 vxge_hw_vpath_vid_add(vpath->handle, vid);
3196 }
3197}
3198
3199/**
3200 * vxge_vlan_rx_add_vid
3201 * @dev: net device pointer.
3202 * @vid: vid
3203 *
3204 * Remove the vlan id from the device's vlan id table
3205 */
3206static void
3207vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3208{
3209 struct vxgedev *vdev;
3210 struct vxge_vpath *vpath;
3211 int vp_id;
3212
3213 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3214
3215 vdev = (struct vxgedev *)netdev_priv(dev);
3216
3217 vlan_group_set_device(vdev->vlgrp, vid, NULL);
3218
3219 /* Delete this vlan from the vid table */
3220 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3221 vpath = &vdev->vpaths[vp_id];
3222 if (!vpath->is_open)
3223 continue;
3224 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3225 }
3226 vxge_debug_entryexit(VXGE_TRACE,
3227 "%s:%d Exiting...", __func__, __LINE__);
3228}
3229
3230static const struct net_device_ops vxge_netdev_ops = {
3231 .ndo_open = vxge_open,
3232 .ndo_stop = vxge_close,
3233 .ndo_get_stats = vxge_get_stats,
3234 .ndo_start_xmit = vxge_xmit,
3235 .ndo_validate_addr = eth_validate_addr,
3236 .ndo_set_multicast_list = vxge_set_multicast,
3237
3238 .ndo_do_ioctl = vxge_ioctl,
3239
3240 .ndo_set_mac_address = vxge_set_mac_addr,
3241 .ndo_change_mtu = vxge_change_mtu,
3242 .ndo_vlan_rx_register = vxge_vlan_rx_register,
3243 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3244 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3245
3246 .ndo_tx_timeout = vxge_tx_watchdog,
3247#ifdef CONFIG_NET_POLL_CONTROLLER
3248 .ndo_poll_controller = vxge_netpoll,
3249#endif
3250};
3251
3252int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3253 struct vxge_config *config,
3254 int high_dma, int no_of_vpath,
3255 struct vxgedev **vdev_out)
3256{
3257 struct net_device *ndev;
3258 enum vxge_hw_status status = VXGE_HW_OK;
3259 struct vxgedev *vdev;
3260 int i, ret = 0, no_of_queue = 1;
3261 u64 stat;
3262
3263 *vdev_out = NULL;
3264 if (config->tx_steering_type == TX_MULTIQ_STEERING)
3265 no_of_queue = no_of_vpath;
3266
3267 ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3268 no_of_queue);
3269 if (ndev == NULL) {
3270 vxge_debug_init(
3271 vxge_hw_device_trace_level_get(hldev),
3272 "%s : device allocation failed", __func__);
3273 ret = -ENODEV;
3274 goto _out0;
3275 }
3276
3277 vxge_debug_entryexit(
3278 vxge_hw_device_trace_level_get(hldev),
3279 "%s: %s:%d Entering...",
3280 ndev->name, __func__, __LINE__);
3281
3282 vdev = netdev_priv(ndev);
3283 memset(vdev, 0, sizeof(struct vxgedev));
3284
3285 vdev->ndev = ndev;
3286 vdev->devh = hldev;
3287 vdev->pdev = hldev->pdev;
3288 memcpy(&vdev->config, config, sizeof(struct vxge_config));
3289 vdev->rx_csum = 1; /* Enable Rx CSUM by default. */
3290
3291 SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3292
3293 ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3294 NETIF_F_HW_VLAN_FILTER;
3295 /* Driver entry points */
3296 ndev->irq = vdev->pdev->irq;
3297 ndev->base_addr = (unsigned long) hldev->bar0;
3298
3299 ndev->netdev_ops = &vxge_netdev_ops;
3300
3301 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3302
3303 initialize_ethtool_ops(ndev);
3304
3305 /* Allocate memory for vpath */
3306 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3307 no_of_vpath, GFP_KERNEL);
3308 if (!vdev->vpaths) {
3309 vxge_debug_init(VXGE_ERR,
3310 "%s: vpath memory allocation failed",
3311 vdev->ndev->name);
3312 ret = -ENODEV;
3313 goto _out1;
3314 }
3315
3316 ndev->features |= NETIF_F_SG;
3317
3318 ndev->features |= NETIF_F_HW_CSUM;
3319 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3320 "%s : checksuming enabled", __func__);
3321
3322 if (high_dma) {
3323 ndev->features |= NETIF_F_HIGHDMA;
3324 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3325 "%s : using High DMA", __func__);
3326 }
3327
3328 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3329
3330 if (vdev->config.gro_enable)
3331 ndev->features |= NETIF_F_GRO;
3332
3333 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3334 ndev->real_num_tx_queues = no_of_vpath;
3335
3336#ifdef NETIF_F_LLTX
3337 ndev->features |= NETIF_F_LLTX;
3338#endif
3339
3340 for (i = 0; i < no_of_vpath; i++)
3341 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3342
3343 if (register_netdev(ndev)) {
3344 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3345 "%s: %s : device registration failed!",
3346 ndev->name, __func__);
3347 ret = -ENODEV;
3348 goto _out2;
3349 }
3350
3351 /* Set the factory defined MAC address initially */
3352 ndev->addr_len = ETH_ALEN;
3353
3354 /* Make Link state as off at this point, when the Link change
3355 * interrupt comes the state will be automatically changed to
3356 * the right state.
3357 */
3358 netif_carrier_off(ndev);
3359
3360 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3361 "%s: Ethernet device registered",
3362 ndev->name);
3363
3364 *vdev_out = vdev;
3365
3366 /* Resetting the Device stats */
3367 status = vxge_hw_mrpcim_stats_access(
3368 hldev,
3369 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3370 0,
3371 0,
3372 &stat);
3373
3374 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3375 vxge_debug_init(
3376 vxge_hw_device_trace_level_get(hldev),
3377 "%s: device stats clear returns"
3378 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3379
3380 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3381 "%s: %s:%d Exiting...",
3382 ndev->name, __func__, __LINE__);
3383
3384 return ret;
3385_out2:
3386 kfree(vdev->vpaths);
3387_out1:
3388 free_netdev(ndev);
3389_out0:
3390 return ret;
3391}
3392
3393/*
3394 * vxge_device_unregister
3395 *
3396 * This function will unregister and free network device
3397 */
3398void
3399vxge_device_unregister(struct __vxge_hw_device *hldev)
3400{
3401 struct vxgedev *vdev;
3402 struct net_device *dev;
3403 char buf[IFNAMSIZ];
3404#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3405 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3406 u32 level_trace;
3407#endif
3408
3409 dev = hldev->ndev;
3410 vdev = netdev_priv(dev);
3411#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3412 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3413 level_trace = vdev->level_trace;
3414#endif
3415 vxge_debug_entryexit(level_trace,
3416 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3417
3418 memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3419
3420 /* in 2.6 will call stop() if device is up */
3421 unregister_netdev(dev);
3422
3423 flush_scheduled_work();
3424
3425 vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3426 vxge_debug_entryexit(level_trace,
3427 "%s: %s:%d Exiting...", buf, __func__, __LINE__);
3428}
3429
3430/*
3431 * vxge_callback_crit_err
3432 *
3433 * This function is called by the alarm handler in interrupt context.
3434 * Driver must analyze it based on the event type.
3435 */
3436static void
3437vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3438 enum vxge_hw_event type, u64 vp_id)
3439{
3440 struct net_device *dev = hldev->ndev;
3441 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3442 int vpath_idx;
3443
3444 vxge_debug_entryexit(vdev->level_trace,
3445 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3446
3447 /* Note: This event type should be used for device wide
3448 * indications only - Serious errors, Slot freeze and critical errors
3449 */
3450 vdev->cric_err_event = type;
3451
3452 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3453 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3454 break;
3455
3456 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3457 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3458 vxge_debug_init(VXGE_ERR,
3459 "%s: Slot is frozen", vdev->ndev->name);
3460 } else if (type == VXGE_HW_EVENT_SERR) {
3461 vxge_debug_init(VXGE_ERR,
3462 "%s: Encountered Serious Error",
3463 vdev->ndev->name);
3464 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3465 vxge_debug_init(VXGE_ERR,
3466 "%s: Encountered Critical Error",
3467 vdev->ndev->name);
3468 }
3469
3470 if ((type == VXGE_HW_EVENT_SERR) ||
3471 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3472 if (unlikely(vdev->exec_mode))
3473 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3474 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3475 vxge_hw_device_mask_all(hldev);
3476 if (unlikely(vdev->exec_mode))
3477 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3478 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3479 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3480
3481 if (unlikely(vdev->exec_mode))
3482 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3483 else {
3484 /* check if this vpath is already set for reset */
3485 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3486
3487 /* disable interrupts for this vpath */
3488 vxge_vpath_intr_disable(vdev, vpath_idx);
3489
3490 /* stop the queue for this vpath */
3491 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3492 fifo);
3493 }
3494 }
3495 }
3496
3497 vxge_debug_entryexit(vdev->level_trace,
3498 "%s: %s:%d Exiting...",
3499 vdev->ndev->name, __func__, __LINE__);
3500}
3501
3502static void verify_bandwidth(void)
3503{
3504 int i, band_width, total = 0, equal_priority = 0;
3505
3506 /* 1. If user enters 0 for some fifo, give equal priority to all */
3507 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3508 if (bw_percentage[i] == 0) {
3509 equal_priority = 1;
3510 break;
3511 }
3512 }
3513
3514 if (!equal_priority) {
3515 /* 2. If sum exceeds 100, give equal priority to all */
3516 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3517 if (bw_percentage[i] == 0xFF)
3518 break;
3519
3520 total += bw_percentage[i];
3521 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3522 equal_priority = 1;
3523 break;
3524 }
3525 }
3526 }
3527
3528 if (!equal_priority) {
3529 /* Is all the bandwidth consumed? */
3530 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3531 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3532 /* Split rest of bw equally among next VPs*/
3533 band_width =
3534 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3535 (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3536 if (band_width < 2) /* min of 2% */
3537 equal_priority = 1;
3538 else {
3539 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3540 i++)
3541 bw_percentage[i] =
3542 band_width;
3543 }
3544 }
3545 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3546 equal_priority = 1;
3547 }
3548
3549 if (equal_priority) {
3550 vxge_debug_init(VXGE_ERR,
3551 "%s: Assigning equal bandwidth to all the vpaths",
3552 VXGE_DRIVER_NAME);
3553 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3554 VXGE_HW_MAX_VIRTUAL_PATHS;
3555 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3556 bw_percentage[i] = bw_percentage[0];
3557 }
3558
3559 return;
3560}
3561
3562/*
3563 * Vpath configuration
3564 */
3565static int __devinit vxge_config_vpaths(
3566 struct vxge_hw_device_config *device_config,
3567 u64 vpath_mask, struct vxge_config *config_param)
3568{
3569 int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3570 u32 txdl_size, txdl_per_memblock;
3571
3572 temp = driver_config->vpath_per_dev;
3573 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3574 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3575 /* No more CPU. Return vpath number as zero.*/
3576 if (driver_config->g_no_cpus == -1)
3577 return 0;
3578
3579 if (!driver_config->g_no_cpus)
3580 driver_config->g_no_cpus = num_online_cpus();
3581
3582 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3583 if (!driver_config->vpath_per_dev)
3584 driver_config->vpath_per_dev = 1;
3585
3586 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3587 if (!vxge_bVALn(vpath_mask, i, 1))
3588 continue;
3589 else
3590 default_no_vpath++;
3591 if (default_no_vpath < driver_config->vpath_per_dev)
3592 driver_config->vpath_per_dev = default_no_vpath;
3593
3594 driver_config->g_no_cpus = driver_config->g_no_cpus -
3595 (driver_config->vpath_per_dev * 2);
3596 if (driver_config->g_no_cpus <= 0)
3597 driver_config->g_no_cpus = -1;
3598 }
3599
3600 if (driver_config->vpath_per_dev == 1) {
3601 vxge_debug_ll_config(VXGE_TRACE,
3602 "%s: Disable tx and rx steering, "
3603 "as single vpath is configured", VXGE_DRIVER_NAME);
3604 config_param->rth_steering = NO_STEERING;
3605 config_param->tx_steering_type = NO_STEERING;
3606 device_config->rth_en = 0;
3607 }
3608
3609 /* configure bandwidth */
3610 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3611 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3612
3613 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3614 device_config->vp_config[i].vp_id = i;
3615 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3616 if (no_of_vpaths < driver_config->vpath_per_dev) {
3617 if (!vxge_bVALn(vpath_mask, i, 1)) {
3618 vxge_debug_ll_config(VXGE_TRACE,
3619 "%s: vpath: %d is not available",
3620 VXGE_DRIVER_NAME, i);
3621 continue;
3622 } else {
3623 vxge_debug_ll_config(VXGE_TRACE,
3624 "%s: vpath: %d available",
3625 VXGE_DRIVER_NAME, i);
3626 no_of_vpaths++;
3627 }
3628 } else {
3629 vxge_debug_ll_config(VXGE_TRACE,
3630 "%s: vpath: %d is not configured, "
3631 "max_config_vpath exceeded",
3632 VXGE_DRIVER_NAME, i);
3633 break;
3634 }
3635
3636 /* Configure Tx fifo's */
3637 device_config->vp_config[i].fifo.enable =
3638 VXGE_HW_FIFO_ENABLE;
3639 device_config->vp_config[i].fifo.max_frags =
3640 MAX_SKB_FRAGS;
3641 device_config->vp_config[i].fifo.memblock_size =
3642 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3643
3644 txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
3645 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3646
3647 device_config->vp_config[i].fifo.fifo_blocks =
3648 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3649
3650 device_config->vp_config[i].fifo.intr =
3651 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3652
3653 /* Configure tti properties */
3654 device_config->vp_config[i].tti.intr_enable =
3655 VXGE_HW_TIM_INTR_ENABLE;
3656
3657 device_config->vp_config[i].tti.btimer_val =
3658 (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3659
3660 device_config->vp_config[i].tti.timer_ac_en =
3661 VXGE_HW_TIM_TIMER_AC_ENABLE;
3662
3663 /* For msi-x with napi (each vector
3664 has a handler of its own) -
3665 Set CI to OFF for all vpaths */
3666 device_config->vp_config[i].tti.timer_ci_en =
3667 VXGE_HW_TIM_TIMER_CI_DISABLE;
3668
3669 device_config->vp_config[i].tti.timer_ri_en =
3670 VXGE_HW_TIM_TIMER_RI_DISABLE;
3671
3672 device_config->vp_config[i].tti.util_sel =
3673 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3674
3675 device_config->vp_config[i].tti.ltimer_val =
3676 (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3677
3678 device_config->vp_config[i].tti.rtimer_val =
3679 (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3680
3681 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3682 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3683 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3684 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3685 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3686 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3687 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3688
3689 /* Configure Rx rings */
3690 device_config->vp_config[i].ring.enable =
3691 VXGE_HW_RING_ENABLE;
3692
3693 device_config->vp_config[i].ring.ring_blocks =
3694 VXGE_HW_DEF_RING_BLOCKS;
3695 device_config->vp_config[i].ring.buffer_mode =
3696 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3697 device_config->vp_config[i].ring.rxds_limit =
3698 VXGE_HW_DEF_RING_RXDS_LIMIT;
3699 device_config->vp_config[i].ring.scatter_mode =
3700 VXGE_HW_RING_SCATTER_MODE_A;
3701
3702 /* Configure rti properties */
3703 device_config->vp_config[i].rti.intr_enable =
3704 VXGE_HW_TIM_INTR_ENABLE;
3705
3706 device_config->vp_config[i].rti.btimer_val =
3707 (VXGE_RTI_BTIMER_VAL * 1000)/272;
3708
3709 device_config->vp_config[i].rti.timer_ac_en =
3710 VXGE_HW_TIM_TIMER_AC_ENABLE;
3711
3712 device_config->vp_config[i].rti.timer_ci_en =
3713 VXGE_HW_TIM_TIMER_CI_DISABLE;
3714
3715 device_config->vp_config[i].rti.timer_ri_en =
3716 VXGE_HW_TIM_TIMER_RI_DISABLE;
3717
3718 device_config->vp_config[i].rti.util_sel =
3719 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3720
3721 device_config->vp_config[i].rti.urange_a =
3722 RTI_RX_URANGE_A;
3723 device_config->vp_config[i].rti.urange_b =
3724 RTI_RX_URANGE_B;
3725 device_config->vp_config[i].rti.urange_c =
3726 RTI_RX_URANGE_C;
3727 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3728 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3729 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3730 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3731
3732 device_config->vp_config[i].rti.rtimer_val =
3733 (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3734
3735 device_config->vp_config[i].rti.ltimer_val =
3736 (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3737
3738 device_config->vp_config[i].rpa_strip_vlan_tag =
3739 vlan_tag_strip;
3740 }
3741
3742 driver_config->vpath_per_dev = temp;
3743 return no_of_vpaths;
3744}
3745
3746/* initialize device configuratrions */
3747static void __devinit vxge_device_config_init(
3748 struct vxge_hw_device_config *device_config,
3749 int *intr_type)
3750{
3751 /* Used for CQRQ/SRQ. */
3752 device_config->dma_blockpool_initial =
3753 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3754
3755 device_config->dma_blockpool_max =
3756 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3757
3758 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3759 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3760
3761#ifndef CONFIG_PCI_MSI
3762 vxge_debug_init(VXGE_ERR,
3763 "%s: This Kernel does not support "
3764 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3765 *intr_type = INTA;
3766#endif
3767
3768 /* Configure whether MSI-X or IRQL. */
3769 switch (*intr_type) {
3770 case INTA:
3771 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3772 break;
3773
3774 case MSI_X:
3775 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3776 break;
3777 }
3778 /* Timer period between device poll */
3779 device_config->device_poll_millis = VXGE_TIMER_DELAY;
3780
3781 /* Configure mac based steering. */
3782 device_config->rts_mac_en = addr_learn_en;
3783
3784 /* Configure Vpaths */
3785 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3786
3787 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3788 __func__);
3789 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3790 device_config->dma_blockpool_initial);
3791 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3792 device_config->dma_blockpool_max);
3793 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3794 device_config->intr_mode);
3795 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3796 device_config->device_poll_millis);
3797 vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3798 device_config->rts_mac_en);
3799 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3800 device_config->rth_en);
3801 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3802 device_config->rth_it_type);
3803}
3804
3805static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3806{
3807 int i;
3808
3809 vxge_debug_init(VXGE_TRACE,
3810 "%s: %d Vpath(s) opened",
3811 vdev->ndev->name, vdev->no_of_vpath);
3812
3813 switch (vdev->config.intr_type) {
3814 case INTA:
3815 vxge_debug_init(VXGE_TRACE,
3816 "%s: Interrupt type INTA", vdev->ndev->name);
3817 break;
3818
3819 case MSI_X:
3820 vxge_debug_init(VXGE_TRACE,
3821 "%s: Interrupt type MSI-X", vdev->ndev->name);
3822 break;
3823 }
3824
3825 if (vdev->config.rth_steering) {
3826 vxge_debug_init(VXGE_TRACE,
3827 "%s: RTH steering enabled for TCP_IPV4",
3828 vdev->ndev->name);
3829 } else {
3830 vxge_debug_init(VXGE_TRACE,
3831 "%s: RTH steering disabled", vdev->ndev->name);
3832 }
3833
3834 switch (vdev->config.tx_steering_type) {
3835 case NO_STEERING:
3836 vxge_debug_init(VXGE_TRACE,
3837 "%s: Tx steering disabled", vdev->ndev->name);
3838 break;
3839 case TX_PRIORITY_STEERING:
3840 vxge_debug_init(VXGE_TRACE,
3841 "%s: Unsupported tx steering option",
3842 vdev->ndev->name);
3843 vxge_debug_init(VXGE_TRACE,
3844 "%s: Tx steering disabled", vdev->ndev->name);
3845 vdev->config.tx_steering_type = 0;
3846 break;
3847 case TX_VLAN_STEERING:
3848 vxge_debug_init(VXGE_TRACE,
3849 "%s: Unsupported tx steering option",
3850 vdev->ndev->name);
3851 vxge_debug_init(VXGE_TRACE,
3852 "%s: Tx steering disabled", vdev->ndev->name);
3853 vdev->config.tx_steering_type = 0;
3854 break;
3855 case TX_MULTIQ_STEERING:
3856 vxge_debug_init(VXGE_TRACE,
3857 "%s: Tx multiqueue steering enabled",
3858 vdev->ndev->name);
3859 break;
3860 case TX_PORT_STEERING:
3861 vxge_debug_init(VXGE_TRACE,
3862 "%s: Tx port steering enabled",
3863 vdev->ndev->name);
3864 break;
3865 default:
3866 vxge_debug_init(VXGE_ERR,
3867 "%s: Unsupported tx steering type",
3868 vdev->ndev->name);
3869 vxge_debug_init(VXGE_TRACE,
3870 "%s: Tx steering disabled", vdev->ndev->name);
3871 vdev->config.tx_steering_type = 0;
3872 }
3873
3874 if (vdev->config.gro_enable) {
3875 vxge_debug_init(VXGE_ERR,
3876 "%s: Generic receive offload enabled",
3877 vdev->ndev->name);
3878 } else
3879 vxge_debug_init(VXGE_TRACE,
3880 "%s: Generic receive offload disabled",
3881 vdev->ndev->name);
3882
3883 if (vdev->config.addr_learn_en)
3884 vxge_debug_init(VXGE_TRACE,
3885 "%s: MAC Address learning enabled", vdev->ndev->name);
3886
3887 vxge_debug_init(VXGE_TRACE,
3888 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3889
3890 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3891 if (!vxge_bVALn(vpath_mask, i, 1))
3892 continue;
3893 vxge_debug_ll_config(VXGE_TRACE,
3894 "%s: MTU size - %d", vdev->ndev->name,
3895 ((struct __vxge_hw_device *)(vdev->devh))->
3896 config.vp_config[i].mtu);
3897 vxge_debug_init(VXGE_TRACE,
3898 "%s: VLAN tag stripping %s", vdev->ndev->name,
3899 ((struct __vxge_hw_device *)(vdev->devh))->
3900 config.vp_config[i].rpa_strip_vlan_tag
3901 ? "Enabled" : "Disabled");
3902 vxge_debug_init(VXGE_TRACE,
3903 "%s: Ring blocks : %d", vdev->ndev->name,
3904 ((struct __vxge_hw_device *)(vdev->devh))->
3905 config.vp_config[i].ring.ring_blocks);
3906 vxge_debug_init(VXGE_TRACE,
3907 "%s: Fifo blocks : %d", vdev->ndev->name,
3908 ((struct __vxge_hw_device *)(vdev->devh))->
3909 config.vp_config[i].fifo.fifo_blocks);
3910 vxge_debug_ll_config(VXGE_TRACE,
3911 "%s: Max frags : %d", vdev->ndev->name,
3912 ((struct __vxge_hw_device *)(vdev->devh))->
3913 config.vp_config[i].fifo.max_frags);
3914 break;
3915 }
3916}
3917
3918#ifdef CONFIG_PM
3919/**
3920 * vxge_pm_suspend - vxge power management suspend entry point
3921 *
3922 */
3923static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3924{
3925 return -ENOSYS;
3926}
3927/**
3928 * vxge_pm_resume - vxge power management resume entry point
3929 *
3930 */
3931static int vxge_pm_resume(struct pci_dev *pdev)
3932{
3933 return -ENOSYS;
3934}
3935
3936#endif
3937
3938/**
3939 * vxge_io_error_detected - called when PCI error is detected
3940 * @pdev: Pointer to PCI device
3941 * @state: The current pci connection state
3942 *
3943 * This function is called after a PCI bus error affecting
3944 * this device has been detected.
3945 */
3946static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3947 pci_channel_state_t state)
3948{
3949 struct __vxge_hw_device *hldev =
3950 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3951 struct net_device *netdev = hldev->ndev;
3952
3953 netif_device_detach(netdev);
3954
3955 if (netif_running(netdev)) {
3956 /* Bring down the card, while avoiding PCI I/O */
3957 do_vxge_close(netdev, 0);
3958 }
3959
3960 pci_disable_device(pdev);
3961
3962 return PCI_ERS_RESULT_NEED_RESET;
3963}
3964
3965/**
3966 * vxge_io_slot_reset - called after the pci bus has been reset.
3967 * @pdev: Pointer to PCI device
3968 *
3969 * Restart the card from scratch, as if from a cold-boot.
3970 * At this point, the card has exprienced a hard reset,
3971 * followed by fixups by BIOS, and has its config space
3972 * set up identically to what it was at cold boot.
3973 */
3974static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3975{
3976 struct __vxge_hw_device *hldev =
3977 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3978 struct net_device *netdev = hldev->ndev;
3979
3980 struct vxgedev *vdev = netdev_priv(netdev);
3981
3982 if (pci_enable_device(pdev)) {
3983 printk(KERN_ERR "%s: "
3984 "Cannot re-enable device after reset\n",
3985 VXGE_DRIVER_NAME);
3986 return PCI_ERS_RESULT_DISCONNECT;
3987 }
3988
3989 pci_set_master(pdev);
3990 vxge_reset(vdev);
3991
3992 return PCI_ERS_RESULT_RECOVERED;
3993}
3994
3995/**
3996 * vxge_io_resume - called when traffic can start flowing again.
3997 * @pdev: Pointer to PCI device
3998 *
3999 * This callback is called when the error recovery driver tells
4000 * us that its OK to resume normal operation.
4001 */
4002static void vxge_io_resume(struct pci_dev *pdev)
4003{
4004 struct __vxge_hw_device *hldev =
4005 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4006 struct net_device *netdev = hldev->ndev;
4007
4008 if (netif_running(netdev)) {
4009 if (vxge_open(netdev)) {
4010 printk(KERN_ERR "%s: "
4011 "Can't bring device back up after reset\n",
4012 VXGE_DRIVER_NAME);
4013 return;
4014 }
4015 }
4016
4017 netif_device_attach(netdev);
4018}
4019
4020/**
4021 * vxge_probe
4022 * @pdev : structure containing the PCI related information of the device.
4023 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4024 * Description:
4025 * This function is called when a new PCI device gets detected and initializes
4026 * it.
4027 * Return value:
4028 * returns 0 on success and negative on failure.
4029 *
4030 */
4031static int __devinit
4032vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4033{
4034 struct __vxge_hw_device *hldev;
4035 enum vxge_hw_status status;
4036 int ret;
4037 int high_dma = 0;
4038 u64 vpath_mask = 0;
4039 struct vxgedev *vdev;
4040 struct vxge_config ll_config;
4041 struct vxge_hw_device_config *device_config = NULL;
4042 struct vxge_hw_device_attr attr;
4043 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4044 u8 *macaddr;
4045 struct vxge_mac_addrs *entry;
4046 static int bus = -1, device = -1;
4047 u8 new_device = 0;
4048
4049 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4050 attr.pdev = pdev;
4051
4052 if (bus != pdev->bus->number)
4053 new_device = 1;
4054 if (device != PCI_SLOT(pdev->devfn))
4055 new_device = 1;
4056
4057 bus = pdev->bus->number;
4058 device = PCI_SLOT(pdev->devfn);
4059
4060 if (new_device) {
4061 if (driver_config->config_dev_cnt &&
4062 (driver_config->config_dev_cnt !=
4063 driver_config->total_dev_cnt))
4064 vxge_debug_init(VXGE_ERR,
4065 "%s: Configured %d of %d devices",
4066 VXGE_DRIVER_NAME,
4067 driver_config->config_dev_cnt,
4068 driver_config->total_dev_cnt);
4069 driver_config->config_dev_cnt = 0;
4070 driver_config->total_dev_cnt = 0;
4071 driver_config->g_no_cpus = 0;
4072 driver_config->vpath_per_dev = max_config_vpath;
4073 }
4074
4075 driver_config->total_dev_cnt++;
4076 if (++driver_config->config_dev_cnt > max_config_dev) {
4077 ret = 0;
4078 goto _exit0;
4079 }
4080
4081 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4082 GFP_KERNEL);
4083 if (!device_config) {
4084 ret = -ENOMEM;
4085 vxge_debug_init(VXGE_ERR,
4086 "device_config : malloc failed %s %d",
4087 __FILE__, __LINE__);
4088 goto _exit0;
4089 }
4090
4091 memset(&ll_config, 0, sizeof(struct vxge_config));
4092 ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4093 ll_config.intr_type = MSI_X;
4094 ll_config.napi_weight = NEW_NAPI_WEIGHT;
4095 ll_config.rth_steering = RTH_STEERING;
4096
4097 /* get the default configuration parameters */
4098 vxge_hw_device_config_default_get(device_config);
4099
4100 /* initialize configuration parameters */
4101 vxge_device_config_init(device_config, &ll_config.intr_type);
4102
4103 ret = pci_enable_device(pdev);
4104 if (ret) {
4105 vxge_debug_init(VXGE_ERR,
4106 "%s : can not enable PCI device", __func__);
4107 goto _exit0;
4108 }
4109
4110 if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
4111 vxge_debug_ll_config(VXGE_TRACE,
4112 "%s : using 64bit DMA", __func__);
4113
4114 high_dma = 1;
4115
4116 if (pci_set_consistent_dma_mask(pdev,
4117 0xffffffffffffffffULL)) {
4118 vxge_debug_init(VXGE_ERR,
4119 "%s : unable to obtain 64bit DMA for "
4120 "consistent allocations", __func__);
4121 ret = -ENOMEM;
4122 goto _exit1;
4123 }
4124 } else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
4125 vxge_debug_ll_config(VXGE_TRACE,
4126 "%s : using 32bit DMA", __func__);
4127 } else {
4128 ret = -ENOMEM;
4129 goto _exit1;
4130 }
4131
4132 if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4133 vxge_debug_init(VXGE_ERR,
4134 "%s : request regions failed", __func__);
4135 ret = -ENODEV;
4136 goto _exit1;
4137 }
4138
4139 pci_set_master(pdev);
4140
4141 attr.bar0 = pci_ioremap_bar(pdev, 0);
4142 if (!attr.bar0) {
4143 vxge_debug_init(VXGE_ERR,
4144 "%s : cannot remap io memory bar0", __func__);
4145 ret = -ENODEV;
4146 goto _exit2;
4147 }
4148 vxge_debug_ll_config(VXGE_TRACE,
4149 "pci ioremap bar0: %p:0x%llx",
4150 attr.bar0,
4151 (unsigned long long)pci_resource_start(pdev, 0));
4152
4153 attr.bar1 = pci_ioremap_bar(pdev, 2);
4154 if (!attr.bar1) {
4155 vxge_debug_init(VXGE_ERR,
4156 "%s : cannot remap io memory bar2", __func__);
4157 ret = -ENODEV;
4158 goto _exit3;
4159 }
4160 vxge_debug_ll_config(VXGE_TRACE,
4161 "pci ioremap bar1: %p:0x%llx",
4162 attr.bar1,
4163 (unsigned long long)pci_resource_start(pdev, 2));
4164
4165 status = vxge_hw_device_hw_info_get(attr.bar0,
4166 &ll_config.device_hw_info);
4167 if (status != VXGE_HW_OK) {
4168 vxge_debug_init(VXGE_ERR,
4169 "%s: Reading of hardware info failed."
4170 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4171 ret = -EINVAL;
4172 goto _exit4;
4173 }
4174
4175 if (ll_config.device_hw_info.fw_version.major !=
4176 VXGE_DRIVER_VERSION_MAJOR) {
4177 vxge_debug_init(VXGE_ERR,
4178 "FW Ver.(maj): %d not driver's expected version: %d",
4179 ll_config.device_hw_info.fw_version.major,
4180 VXGE_DRIVER_VERSION_MAJOR);
4181 ret = -EINVAL;
4182 goto _exit4;
4183 }
4184
4185 vpath_mask = ll_config.device_hw_info.vpath_mask;
4186 if (vpath_mask == 0) {
4187 vxge_debug_ll_config(VXGE_TRACE,
4188 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4189 ret = -EINVAL;
4190 goto _exit4;
4191 }
4192
4193 vxge_debug_ll_config(VXGE_TRACE,
4194 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4195 (unsigned long long)vpath_mask);
4196
4197 /* Check how many vpaths are available */
4198 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4199 if (!((vpath_mask) & vxge_mBIT(i)))
4200 continue;
4201 max_vpath_supported++;
4202 }
4203
4204 /*
4205 * Configure vpaths and get driver configured number of vpaths
4206 * which is less than or equal to the maximum vpaths per function.
4207 */
4208 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4209 if (!no_of_vpath) {
4210 vxge_debug_ll_config(VXGE_ERR,
4211 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4212 ret = 0;
4213 goto _exit4;
4214 }
4215
4216 /* Setting driver callbacks */
4217 attr.uld_callbacks.link_up = vxge_callback_link_up;
4218 attr.uld_callbacks.link_down = vxge_callback_link_down;
4219 attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4220
4221 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4222 if (status != VXGE_HW_OK) {
4223 vxge_debug_init(VXGE_ERR,
4224 "Failed to initialize device (%d)", status);
4225 ret = -EINVAL;
4226 goto _exit4;
4227 }
4228
4229 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4230
4231 /* set private device info */
4232 pci_set_drvdata(pdev, hldev);
4233
4234 ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4235 ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4236 ll_config.addr_learn_en = addr_learn_en;
4237 ll_config.rth_algorithm = RTH_ALG_JENKINS;
4238 ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4239 ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4240 ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4241 ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4242 ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4243 ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4244 ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4245 ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4246 ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4247
4248 if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4249 &vdev)) {
4250 ret = -EINVAL;
4251 goto _exit5;
4252 }
4253
4254 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4255 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4256 vxge_hw_device_trace_level_get(hldev));
4257
4258 /* set private HW device info */
4259 hldev->ndev = vdev->ndev;
4260 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4261 vdev->bar0 = attr.bar0;
4262 vdev->bar1 = attr.bar1;
4263 vdev->max_vpath_supported = max_vpath_supported;
4264 vdev->no_of_vpath = no_of_vpath;
4265
4266 /* Virtual Path count */
4267 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4268 if (!vxge_bVALn(vpath_mask, i, 1))
4269 continue;
4270 if (j >= vdev->no_of_vpath)
4271 break;
4272
4273 vdev->vpaths[j].is_configured = 1;
4274 vdev->vpaths[j].device_id = i;
4275 vdev->vpaths[j].fifo.driver_id = j;
4276 vdev->vpaths[j].ring.driver_id = j;
4277 vdev->vpaths[j].vdev = vdev;
4278 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4279 memcpy((u8 *)vdev->vpaths[j].macaddr,
4280 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4281 ETH_ALEN);
4282
4283 /* Initialize the mac address list header */
4284 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4285
4286 vdev->vpaths[j].mac_addr_cnt = 0;
4287 vdev->vpaths[j].mcast_addr_cnt = 0;
4288 j++;
4289 }
4290 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4291 vdev->max_config_port = max_config_port;
4292
4293 vdev->vlan_tag_strip = vlan_tag_strip;
4294
4295 /* map the hashing selector table to the configured vpaths */
4296 for (i = 0; i < vdev->no_of_vpath; i++)
4297 vdev->vpath_selector[i] = vpath_selector[i];
4298
4299 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4300
4301 ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4302 ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4303 ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4304
4305 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4306 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4307
4308 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4309 vdev->ndev->name, ll_config.device_hw_info.part_number);
4310
4311 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4312 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4313
4314 vxge_debug_init(VXGE_TRACE,
4315 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4316 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4317 macaddr[3], macaddr[4], macaddr[5]);
4318
4319 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4320 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4321
4322 vxge_debug_init(VXGE_TRACE,
4323 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4324 ll_config.device_hw_info.fw_version.version,
4325 ll_config.device_hw_info.fw_date.date);
4326
4327 vxge_print_parm(vdev, vpath_mask);
4328
4329 /* Store the fw version for ethttool option */
4330 strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4331 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4332 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4333
4334 /* Copy the station mac address to the list */
4335 for (i = 0; i < vdev->no_of_vpath; i++) {
4336 entry = (struct vxge_mac_addrs *)
4337 kzalloc(sizeof(struct vxge_mac_addrs),
4338 GFP_KERNEL);
4339 if (NULL == entry) {
4340 vxge_debug_init(VXGE_ERR,
4341 "%s: mac_addr_list : memory allocation failed",
4342 vdev->ndev->name);
4343 ret = -EPERM;
4344 goto _exit6;
4345 }
4346 macaddr = (u8 *)&entry->macaddr;
4347 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4348 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4349 vdev->vpaths[i].mac_addr_cnt = 1;
4350 }
4351
4352 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4353 vdev->ndev->name, __func__, __LINE__);
4354
4355 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4356 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4357 vxge_hw_device_trace_level_get(hldev));
4358
4359 return 0;
4360
4361_exit6:
4362 for (i = 0; i < vdev->no_of_vpath; i++)
4363 vxge_free_mac_add_list(&vdev->vpaths[i]);
4364
4365 vxge_device_unregister(hldev);
4366_exit5:
4367 vxge_hw_device_terminate(hldev);
4368_exit4:
4369 iounmap(attr.bar1);
4370_exit3:
4371 iounmap(attr.bar0);
4372_exit2:
4373 pci_release_regions(pdev);
4374_exit1:
4375 pci_disable_device(pdev);
4376_exit0:
4377 kfree(device_config);
4378 driver_config->config_dev_cnt--;
4379 pci_set_drvdata(pdev, NULL);
4380 return ret;
4381}
4382
4383/**
4384 * vxge_rem_nic - Free the PCI device
4385 * @pdev: structure containing the PCI related information of the device.
4386 * Description: This function is called by the Pci subsystem to release a
4387 * PCI device and free up all resource held up by the device.
4388 */
4389static void __devexit
4390vxge_remove(struct pci_dev *pdev)
4391{
4392 struct __vxge_hw_device *hldev;
4393 struct vxgedev *vdev = NULL;
4394 struct net_device *dev;
4395 int i = 0;
4396#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4397 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4398 u32 level_trace;
4399#endif
4400
4401 hldev = (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4402
4403 if (hldev == NULL)
4404 return;
4405 dev = hldev->ndev;
4406 vdev = netdev_priv(dev);
4407
4408#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4409 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4410 level_trace = vdev->level_trace;
4411#endif
4412 vxge_debug_entryexit(level_trace,
4413 "%s:%d", __func__, __LINE__);
4414
4415 vxge_debug_init(level_trace,
4416 "%s : removing PCI device...", __func__);
4417 vxge_device_unregister(hldev);
4418
4419 for (i = 0; i < vdev->no_of_vpath; i++) {
4420 vxge_free_mac_add_list(&vdev->vpaths[i]);
4421 vdev->vpaths[i].mcast_addr_cnt = 0;
4422 vdev->vpaths[i].mac_addr_cnt = 0;
4423 }
4424
4425 kfree(vdev->vpaths);
4426
4427 iounmap(vdev->bar0);
4428 iounmap(vdev->bar1);
4429
4430 /* we are safe to free it now */
4431 free_netdev(dev);
4432
4433 vxge_debug_init(level_trace,
4434 "%s:%d Device unregistered", __func__, __LINE__);
4435
4436 vxge_hw_device_terminate(hldev);
4437
4438 pci_disable_device(pdev);
4439 pci_release_regions(pdev);
4440 pci_set_drvdata(pdev, NULL);
4441 vxge_debug_entryexit(level_trace,
4442 "%s:%d Exiting...", __func__, __LINE__);
4443}
4444
4445static struct pci_error_handlers vxge_err_handler = {
4446 .error_detected = vxge_io_error_detected,
4447 .slot_reset = vxge_io_slot_reset,
4448 .resume = vxge_io_resume,
4449};
4450
4451static struct pci_driver vxge_driver = {
4452 .name = VXGE_DRIVER_NAME,
4453 .id_table = vxge_id_table,
4454 .probe = vxge_probe,
4455 .remove = __devexit_p(vxge_remove),
4456#ifdef CONFIG_PM
4457 .suspend = vxge_pm_suspend,
4458 .resume = vxge_pm_resume,
4459#endif
4460 .err_handler = &vxge_err_handler,
4461};
4462
4463static int __init
4464vxge_starter(void)
4465{
4466 int ret = 0;
4467 char version[32];
4468 snprintf(version, 32, "%s", DRV_VERSION);
4469
4470 printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4471 VXGE_DRIVER_NAME);
4472 printk(KERN_CRIT "%s: Driver version: %s\n",
4473 VXGE_DRIVER_NAME, version);
4474
4475 verify_bandwidth();
4476
4477 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4478 if (!driver_config)
4479 return -ENOMEM;
4480
4481 ret = pci_register_driver(&vxge_driver);
4482
4483 if (driver_config->config_dev_cnt &&
4484 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4485 vxge_debug_init(VXGE_ERR,
4486 "%s: Configured %d of %d devices",
4487 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4488 driver_config->total_dev_cnt);
4489
4490 if (ret)
4491 kfree(driver_config);
4492
4493 return ret;
4494}
4495
4496static void __exit
4497vxge_closer(void)
4498{
4499 pci_unregister_driver(&vxge_driver);
4500 kfree(driver_config);
4501}
4502module_init(vxge_starter);
4503module_exit(vxge_closer);
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