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OMAP3 PM: CPUFreq driver for OMAP3
[linux-ginger.git] / drivers / net / vxge / vxge-main.c
blob068d7a9d3e36aaf447661fb27e0b9d898325137a
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>
46 #include <linux/tcp.h>
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
53 MODULE_LICENSE("Dual BSD/GPL");
54 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
55 "Virtualized Server Adapter");
56
57 static 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
65 MODULE_DEVICE_TABLE(pci, vxge_id_table);
66
67 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
68 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
69 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
70 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
71 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
72 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
73
74 static 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};
76 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
77 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
78 module_param_array(bw_percentage, uint, NULL, 0);
79
80 static struct vxge_drv_config *driver_config;
81
82 static inline int is_vxge_card_up(struct vxgedev *vdev)
83 {
84 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
85 }
86
87 static 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;
92 #define NR_SKB_COMPLETED 128
93 struct sk_buff *completed[NR_SKB_COMPLETED];
94 int more;
95
96 do {
97 more = 0;
98 skb_ptr = completed;
99
100 if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
101 vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
102 NR_SKB_COMPLETED, &more);
103 spin_unlock_irqrestore(&fifo->tx_lock, flags);
104 }
105 /* free SKBs */
106 for (temp = completed; temp != skb_ptr; temp++)
107 dev_kfree_skb_irq(*temp);
108 } while (more) ;
109 }
110
111 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
112 {
113 int i;
114
115 /* Complete all transmits */
116 for (i = 0; i < vdev->no_of_vpath; i++)
117 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
118 }
119
120 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
121 {
122 int i;
123 struct vxge_ring *ring;
124
125 /* Complete all receives*/
126 for (i = 0; i < vdev->no_of_vpath; i++) {
127 ring = &vdev->vpaths[i].ring;
128 vxge_hw_vpath_poll_rx(ring->handle);
129 }
130 }
131
132 /*
133 * MultiQ manipulation helper functions
134 */
135 void vxge_stop_all_tx_queue(struct vxgedev *vdev)
136 {
137 int i;
138 struct net_device *dev = vdev->ndev;
139
140 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
141 for (i = 0; i < vdev->no_of_vpath; i++)
142 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
143 }
144 netif_tx_stop_all_queues(dev);
145 }
146
147 void vxge_stop_tx_queue(struct vxge_fifo *fifo)
148 {
149 struct net_device *dev = fifo->ndev;
150
151 struct netdev_queue *txq = NULL;
152 if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
153 txq = netdev_get_tx_queue(dev, fifo->driver_id);
154 else {
155 txq = netdev_get_tx_queue(dev, 0);
156 fifo->queue_state = VPATH_QUEUE_STOP;
157 }
158
159 netif_tx_stop_queue(txq);
160 }
161
162 void vxge_start_all_tx_queue(struct vxgedev *vdev)
163 {
164 int i;
165 struct net_device *dev = vdev->ndev;
166
167 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
168 for (i = 0; i < vdev->no_of_vpath; i++)
169 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
170 }
171 netif_tx_start_all_queues(dev);
172 }
173
174 static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
175 {
176 int i;
177 struct net_device *dev = vdev->ndev;
178
179 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
180 for (i = 0; i < vdev->no_of_vpath; i++)
181 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
182 }
183 netif_tx_wake_all_queues(dev);
184 }
185
186 void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
187 {
188 struct net_device *dev = fifo->ndev;
189
190 int vpath_no = fifo->driver_id;
191 struct netdev_queue *txq = NULL;
192 if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
193 txq = netdev_get_tx_queue(dev, vpath_no);
194 if (netif_tx_queue_stopped(txq))
195 netif_tx_wake_queue(txq);
196 } else {
197 txq = netdev_get_tx_queue(dev, 0);
198 if (fifo->queue_state == VPATH_QUEUE_STOP)
199 if (netif_tx_queue_stopped(txq)) {
200 fifo->queue_state = VPATH_QUEUE_START;
201 netif_tx_wake_queue(txq);
202 }
203 }
204 }
205
206 /*
207 * vxge_callback_link_up
208 *
209 * This function is called during interrupt context to notify link up state
210 * change.
211 */
212 void
213 vxge_callback_link_up(struct __vxge_hw_device *hldev)
214 {
215 struct net_device *dev = hldev->ndev;
216 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
217
218 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
219 vdev->ndev->name, __func__, __LINE__);
220 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
221 vdev->stats.link_up++;
222
223 netif_carrier_on(vdev->ndev);
224 vxge_wake_all_tx_queue(vdev);
225
226 vxge_debug_entryexit(VXGE_TRACE,
227 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
228 }
229
230 /*
231 * vxge_callback_link_down
232 *
233 * This function is called during interrupt context to notify link down state
234 * change.
235 */
236 void
237 vxge_callback_link_down(struct __vxge_hw_device *hldev)
238 {
239 struct net_device *dev = hldev->ndev;
240 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
241
242 vxge_debug_entryexit(VXGE_TRACE,
243 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
244 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
245
246 vdev->stats.link_down++;
247 netif_carrier_off(vdev->ndev);
248 vxge_stop_all_tx_queue(vdev);
249
250 vxge_debug_entryexit(VXGE_TRACE,
251 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
252 }
253
254 /*
255 * vxge_rx_alloc
256 *
257 * Allocate SKB.
258 */
259 static struct sk_buff*
260 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
261 {
262 struct net_device *dev;
263 struct sk_buff *skb;
264 struct vxge_rx_priv *rx_priv;
265
266 dev = ring->ndev;
267 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
268 ring->ndev->name, __func__, __LINE__);
269
270 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
271
272 /* try to allocate skb first. this one may fail */
273 skb = netdev_alloc_skb(dev, skb_size +
274 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
275 if (skb == NULL) {
276 vxge_debug_mem(VXGE_ERR,
277 "%s: out of memory to allocate SKB", dev->name);
278 ring->stats.skb_alloc_fail++;
279 return NULL;
280 }
281
282 vxge_debug_mem(VXGE_TRACE,
283 "%s: %s:%d Skb : 0x%p", ring->ndev->name,
284 __func__, __LINE__, skb);
285
286 skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
287
288 rx_priv->skb = skb;
289 rx_priv->skb_data = NULL;
290 rx_priv->data_size = skb_size;
291 vxge_debug_entryexit(VXGE_TRACE,
292 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
293
294 return skb;
295 }
296
297 /*
298 * vxge_rx_map
299 */
300 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
301 {
302 struct vxge_rx_priv *rx_priv;
303 dma_addr_t dma_addr;
304
305 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
306 ring->ndev->name, __func__, __LINE__);
307 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
308
309 rx_priv->skb_data = rx_priv->skb->data;
310 dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
311 rx_priv->data_size, PCI_DMA_FROMDEVICE);
312
313 if (dma_addr == 0) {
314 ring->stats.pci_map_fail++;
315 return -EIO;
316 }
317 vxge_debug_mem(VXGE_TRACE,
318 "%s: %s:%d 1 buffer mode dma_addr = 0x%llx",
319 ring->ndev->name, __func__, __LINE__,
320 (unsigned long long)dma_addr);
321 vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
322
323 rx_priv->data_dma = dma_addr;
324 vxge_debug_entryexit(VXGE_TRACE,
325 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
326
327 return 0;
328 }
329
330 /*
331 * vxge_rx_initial_replenish
332 * Allocation of RxD as an initial replenish procedure.
333 */
334 static enum vxge_hw_status
335 vxge_rx_initial_replenish(void *dtrh, void *userdata)
336 {
337 struct vxge_ring *ring = (struct vxge_ring *)userdata;
338 struct vxge_rx_priv *rx_priv;
339
340 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
341 ring->ndev->name, __func__, __LINE__);
342 if (vxge_rx_alloc(dtrh, ring,
343 VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
344 return VXGE_HW_FAIL;
345
346 if (vxge_rx_map(dtrh, ring)) {
347 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
348 dev_kfree_skb(rx_priv->skb);
349
350 return VXGE_HW_FAIL;
351 }
352 vxge_debug_entryexit(VXGE_TRACE,
353 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
354
355 return VXGE_HW_OK;
356 }
357
358 static inline void
359 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
360 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
361 {
362
363 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
364 ring->ndev->name, __func__, __LINE__);
365 skb_record_rx_queue(skb, ring->driver_id);
366 skb->protocol = eth_type_trans(skb, ring->ndev);
367
368 ring->stats.rx_frms++;
369 ring->stats.rx_bytes += pkt_length;
370
371 if (skb->pkt_type == PACKET_MULTICAST)
372 ring->stats.rx_mcast++;
373
374 vxge_debug_rx(VXGE_TRACE,
375 "%s: %s:%d skb protocol = %d",
376 ring->ndev->name, __func__, __LINE__, skb->protocol);
377
378 if (ring->gro_enable) {
379 if (ring->vlgrp && ext_info->vlan &&
380 (ring->vlan_tag_strip ==
381 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
382 vlan_gro_receive(ring->napi_p, ring->vlgrp,
383 ext_info->vlan, skb);
384 else
385 napi_gro_receive(ring->napi_p, skb);
386 } else {
387 if (ring->vlgrp && vlan &&
388 (ring->vlan_tag_strip ==
389 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
390 vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
391 else
392 netif_receive_skb(skb);
393 }
394 vxge_debug_entryexit(VXGE_TRACE,
395 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
396 }
397
398 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
399 struct vxge_rx_priv *rx_priv)
400 {
401 pci_dma_sync_single_for_device(ring->pdev,
402 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
403
404 vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
405 vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
406 }
407
408 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
409 void *post_dtr, struct __vxge_hw_ring *ringh)
410 {
411 int dtr_count = *dtr_cnt;
412 if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
413 if (*first_dtr)
414 vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
415 *first_dtr = post_dtr;
416 } else
417 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
418 dtr_count++;
419 *dtr_cnt = dtr_count;
420 }
421
422 /*
423 * vxge_rx_1b_compl
424 *
425 * If the interrupt is because of a received frame or if the receive ring
426 * contains fresh as yet un-processed frames, this function is called.
427 */
428 enum vxge_hw_status
429 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
430 u8 t_code, void *userdata)
431 {
432 struct vxge_ring *ring = (struct vxge_ring *)userdata;
433 struct net_device *dev = ring->ndev;
434 unsigned int dma_sizes;
435 void *first_dtr = NULL;
436 int dtr_cnt = 0;
437 int data_size;
438 dma_addr_t data_dma;
439 int pkt_length;
440 struct sk_buff *skb;
441 struct vxge_rx_priv *rx_priv;
442 struct vxge_hw_ring_rxd_info ext_info;
443 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
444 ring->ndev->name, __func__, __LINE__);
445 ring->pkts_processed = 0;
446
447 vxge_hw_ring_replenish(ringh, 0);
448
449 do {
450 prefetch((char *)dtr + L1_CACHE_BYTES);
451 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
452 skb = rx_priv->skb;
453 data_size = rx_priv->data_size;
454 data_dma = rx_priv->data_dma;
455 prefetch(rx_priv->skb_data);
456
457 vxge_debug_rx(VXGE_TRACE,
458 "%s: %s:%d skb = 0x%p",
459 ring->ndev->name, __func__, __LINE__, skb);
460
461 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
462 pkt_length = dma_sizes;
463
464 pkt_length -= ETH_FCS_LEN;
465
466 vxge_debug_rx(VXGE_TRACE,
467 "%s: %s:%d Packet Length = %d",
468 ring->ndev->name, __func__, __LINE__, pkt_length);
469
470 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
471
472 /* check skb validity */
473 vxge_assert(skb);
474
475 prefetch((char *)skb + L1_CACHE_BYTES);
476 if (unlikely(t_code)) {
477
478 if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
479 VXGE_HW_OK) {
480
481 ring->stats.rx_errors++;
482 vxge_debug_rx(VXGE_TRACE,
483 "%s: %s :%d Rx T_code is %d",
484 ring->ndev->name, __func__,
485 __LINE__, t_code);
486
487 /* If the t_code is not supported and if the
488 * t_code is other than 0x5 (unparseable packet
489 * such as unknown UPV6 header), Drop it !!!
490 */
491 vxge_re_pre_post(dtr, ring, rx_priv);
492
493 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
494 ring->stats.rx_dropped++;
495 continue;
496 }
497 }
498
499 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
500
501 if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
502
503 if (!vxge_rx_map(dtr, ring)) {
504 skb_put(skb, pkt_length);
505
506 pci_unmap_single(ring->pdev, data_dma,
507 data_size, PCI_DMA_FROMDEVICE);
508
509 vxge_hw_ring_rxd_pre_post(ringh, dtr);
510 vxge_post(&dtr_cnt, &first_dtr, dtr,
511 ringh);
512 } else {
513 dev_kfree_skb(rx_priv->skb);
514 rx_priv->skb = skb;
515 rx_priv->data_size = data_size;
516 vxge_re_pre_post(dtr, ring, rx_priv);
517
518 vxge_post(&dtr_cnt, &first_dtr, dtr,
519 ringh);
520 ring->stats.rx_dropped++;
521 break;
522 }
523 } else {
524 vxge_re_pre_post(dtr, ring, rx_priv);
525
526 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
527 ring->stats.rx_dropped++;
528 break;
529 }
530 } else {
531 struct sk_buff *skb_up;
532
533 skb_up = netdev_alloc_skb(dev, pkt_length +
534 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
535 if (skb_up != NULL) {
536 skb_reserve(skb_up,
537 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
538
539 pci_dma_sync_single_for_cpu(ring->pdev,
540 data_dma, data_size,
541 PCI_DMA_FROMDEVICE);
542
543 vxge_debug_mem(VXGE_TRACE,
544 "%s: %s:%d skb_up = %p",
545 ring->ndev->name, __func__,
546 __LINE__, skb);
547 memcpy(skb_up->data, skb->data, pkt_length);
548
549 vxge_re_pre_post(dtr, ring, rx_priv);
550
551 vxge_post(&dtr_cnt, &first_dtr, dtr,
552 ringh);
553 /* will netif_rx small SKB instead */
554 skb = skb_up;
555 skb_put(skb, pkt_length);
556 } else {
557 vxge_re_pre_post(dtr, ring, rx_priv);
558
559 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
560 vxge_debug_rx(VXGE_ERR,
561 "%s: vxge_rx_1b_compl: out of "
562 "memory", dev->name);
563 ring->stats.skb_alloc_fail++;
564 break;
565 }
566 }
567
568 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
569 !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
570 ring->rx_csum && /* Offload Rx side CSUM */
571 ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
572 ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
573 skb->ip_summed = CHECKSUM_UNNECESSARY;
574 else
575 skb->ip_summed = CHECKSUM_NONE;
576
577 vxge_rx_complete(ring, skb, ext_info.vlan,
578 pkt_length, &ext_info);
579
580 ring->budget--;
581 ring->pkts_processed++;
582 if (!ring->budget)
583 break;
584
585 } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
586 &t_code) == VXGE_HW_OK);
587
588 if (first_dtr)
589 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
590
591 vxge_debug_entryexit(VXGE_TRACE,
592 "%s:%d Exiting...",
593 __func__, __LINE__);
594 return VXGE_HW_OK;
595 }
596
597 /*
598 * vxge_xmit_compl
599 *
600 * If an interrupt was raised to indicate DMA complete of the Tx packet,
601 * this function is called. It identifies the last TxD whose buffer was
602 * freed and frees all skbs whose data have already DMA'ed into the NICs
603 * internal memory.
604 */
605 enum vxge_hw_status
606 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
607 enum vxge_hw_fifo_tcode t_code, void *userdata,
608 struct sk_buff ***skb_ptr, int nr_skb, int *more)
609 {
610 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
611 struct sk_buff *skb, **done_skb = *skb_ptr;
612 int pkt_cnt = 0;
613
614 vxge_debug_entryexit(VXGE_TRACE,
615 "%s:%d Entered....", __func__, __LINE__);
616
617 do {
618 int frg_cnt;
619 skb_frag_t *frag;
620 int i = 0, j;
621 struct vxge_tx_priv *txd_priv =
622 vxge_hw_fifo_txdl_private_get(dtr);
623
624 skb = txd_priv->skb;
625 frg_cnt = skb_shinfo(skb)->nr_frags;
626 frag = &skb_shinfo(skb)->frags[0];
627
628 vxge_debug_tx(VXGE_TRACE,
629 "%s: %s:%d fifo_hw = %p dtr = %p "
630 "tcode = 0x%x", fifo->ndev->name, __func__,
631 __LINE__, fifo_hw, dtr, t_code);
632 /* check skb validity */
633 vxge_assert(skb);
634 vxge_debug_tx(VXGE_TRACE,
635 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
636 fifo->ndev->name, __func__, __LINE__,
637 skb, txd_priv, frg_cnt);
638 if (unlikely(t_code)) {
639 fifo->stats.tx_errors++;
640 vxge_debug_tx(VXGE_ERR,
641 "%s: tx: dtr %p completed due to "
642 "error t_code %01x", fifo->ndev->name,
643 dtr, t_code);
644 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
645 }
646
647 /* for unfragmented skb */
648 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
649 skb_headlen(skb), PCI_DMA_TODEVICE);
650
651 for (j = 0; j < frg_cnt; j++) {
652 pci_unmap_page(fifo->pdev,
653 txd_priv->dma_buffers[i++],
654 frag->size, PCI_DMA_TODEVICE);
655 frag += 1;
656 }
657
658 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
659
660 /* Updating the statistics block */
661 fifo->stats.tx_frms++;
662 fifo->stats.tx_bytes += skb->len;
663
664 *done_skb++ = skb;
665
666 if (--nr_skb <= 0) {
667 *more = 1;
668 break;
669 }
670
671 pkt_cnt++;
672 if (pkt_cnt > fifo->indicate_max_pkts)
673 break;
674
675 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
676 &dtr, &t_code) == VXGE_HW_OK);
677
678 *skb_ptr = done_skb;
679 vxge_wake_tx_queue(fifo, skb);
680
681 vxge_debug_entryexit(VXGE_TRACE,
682 "%s: %s:%d Exiting...",
683 fifo->ndev->name, __func__, __LINE__);
684 return VXGE_HW_OK;
685 }
686
687 /* select a vpath to transmit the packet */
688 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
689 int *do_lock)
690 {
691 u16 queue_len, counter = 0;
692 if (skb->protocol == htons(ETH_P_IP)) {
693 struct iphdr *ip;
694 struct tcphdr *th;
695
696 ip = ip_hdr(skb);
697
698 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
699 th = (struct tcphdr *)(((unsigned char *)ip) +
700 ip->ihl*4);
701
702 queue_len = vdev->no_of_vpath;
703 counter = (ntohs(th->source) +
704 ntohs(th->dest)) &
705 vdev->vpath_selector[queue_len - 1];
706 if (counter >= queue_len)
707 counter = queue_len - 1;
708
709 if (ip->protocol == IPPROTO_UDP) {
710 #ifdef NETIF_F_LLTX
711 *do_lock = 0;
712 #endif
713 }
714 }
715 }
716 return counter;
717 }
718
719 static enum vxge_hw_status vxge_search_mac_addr_in_list(
720 struct vxge_vpath *vpath, u64 del_mac)
721 {
722 struct list_head *entry, *next;
723 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
724 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
725 return TRUE;
726 }
727 return FALSE;
728 }
729
730 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
731 {
732 struct macInfo mac_info;
733 u8 *mac_address = NULL;
734 u64 mac_addr = 0, vpath_vector = 0;
735 int vpath_idx = 0;
736 enum vxge_hw_status status = VXGE_HW_OK;
737 struct vxge_vpath *vpath = NULL;
738 struct __vxge_hw_device *hldev;
739
740 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
741
742 mac_address = (u8 *)&mac_addr;
743 memcpy(mac_address, mac_header, ETH_ALEN);
744
745 /* Is this mac address already in the list? */
746 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
747 vpath = &vdev->vpaths[vpath_idx];
748 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
749 return vpath_idx;
750 }
751
752 memset(&mac_info, 0, sizeof(struct macInfo));
753 memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
754
755 /* Any vpath has room to add mac address to its da table? */
756 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
757 vpath = &vdev->vpaths[vpath_idx];
758 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
759 /* Add this mac address to this vpath */
760 mac_info.vpath_no = vpath_idx;
761 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
762 status = vxge_add_mac_addr(vdev, &mac_info);
763 if (status != VXGE_HW_OK)
764 return -EPERM;
765 return vpath_idx;
766 }
767 }
768
769 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
770 vpath_idx = 0;
771 mac_info.vpath_no = vpath_idx;
772 /* Is the first vpath already selected as catch-basin ? */
773 vpath = &vdev->vpaths[vpath_idx];
774 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
775 /* Add this mac address to this vpath */
776 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
777 return -EPERM;
778 return vpath_idx;
779 }
780
781 /* Select first vpath as catch-basin */
782 vpath_vector = vxge_mBIT(vpath->device_id);
783 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
784 vxge_hw_mgmt_reg_type_mrpcim,
785 0,
786 (ulong)offsetof(
787 struct vxge_hw_mrpcim_reg,
788 rts_mgr_cbasin_cfg),
789 vpath_vector);
790 if (status != VXGE_HW_OK) {
791 vxge_debug_tx(VXGE_ERR,
792 "%s: Unable to set the vpath-%d in catch-basin mode",
793 VXGE_DRIVER_NAME, vpath->device_id);
794 return -EPERM;
795 }
796
797 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
798 return -EPERM;
799
800 return vpath_idx;
801 }
802
803 /**
804 * vxge_xmit
805 * @skb : the socket buffer containing the Tx data.
806 * @dev : device pointer.
807 *
808 * This function is the Tx entry point of the driver. Neterion NIC supports
809 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
810 * NOTE: when device cant queue the pkt, just the trans_start variable will
811 * not be upadted.
812 */
813 static netdev_tx_t
814 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
815 {
816 struct vxge_fifo *fifo = NULL;
817 void *dtr_priv;
818 void *dtr = NULL;
819 struct vxgedev *vdev = NULL;
820 enum vxge_hw_status status;
821 int frg_cnt, first_frg_len;
822 skb_frag_t *frag;
823 int i = 0, j = 0, avail;
824 u64 dma_pointer;
825 struct vxge_tx_priv *txdl_priv = NULL;
826 struct __vxge_hw_fifo *fifo_hw;
827 int offload_type;
828 unsigned long flags = 0;
829 int vpath_no = 0;
830 int do_spin_tx_lock = 1;
831
832 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
833 dev->name, __func__, __LINE__);
834
835 /* A buffer with no data will be dropped */
836 if (unlikely(skb->len <= 0)) {
837 vxge_debug_tx(VXGE_ERR,
838 "%s: Buffer has no data..", dev->name);
839 dev_kfree_skb(skb);
840 return NETDEV_TX_OK;
841 }
842
843 vdev = (struct vxgedev *)netdev_priv(dev);
844
845 if (unlikely(!is_vxge_card_up(vdev))) {
846 vxge_debug_tx(VXGE_ERR,
847 "%s: vdev not initialized", dev->name);
848 dev_kfree_skb(skb);
849 return NETDEV_TX_OK;
850 }
851
852 if (vdev->config.addr_learn_en) {
853 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
854 if (vpath_no == -EPERM) {
855 vxge_debug_tx(VXGE_ERR,
856 "%s: Failed to store the mac address",
857 dev->name);
858 dev_kfree_skb(skb);
859 return NETDEV_TX_OK;
860 }
861 }
862
863 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
864 vpath_no = skb_get_queue_mapping(skb);
865 else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
866 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
867
868 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
869
870 if (vpath_no >= vdev->no_of_vpath)
871 vpath_no = 0;
872
873 fifo = &vdev->vpaths[vpath_no].fifo;
874 fifo_hw = fifo->handle;
875
876 if (do_spin_tx_lock)
877 spin_lock_irqsave(&fifo->tx_lock, flags);
878 else {
879 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
880 return NETDEV_TX_LOCKED;
881 }
882
883 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
884 if (netif_subqueue_stopped(dev, skb)) {
885 spin_unlock_irqrestore(&fifo->tx_lock, flags);
886 return NETDEV_TX_BUSY;
887 }
888 } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
889 if (netif_queue_stopped(dev)) {
890 spin_unlock_irqrestore(&fifo->tx_lock, flags);
891 return NETDEV_TX_BUSY;
892 }
893 }
894 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
895 if (avail == 0) {
896 vxge_debug_tx(VXGE_ERR,
897 "%s: No free TXDs available", dev->name);
898 fifo->stats.txd_not_free++;
899 vxge_stop_tx_queue(fifo);
900 goto _exit2;
901 }
902
903 /* Last TXD? Stop tx queue to avoid dropping packets. TX
904 * completion will resume the queue.
905 */
906 if (avail == 1)
907 vxge_stop_tx_queue(fifo);
908
909 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
910 if (unlikely(status != VXGE_HW_OK)) {
911 vxge_debug_tx(VXGE_ERR,
912 "%s: Out of descriptors .", dev->name);
913 fifo->stats.txd_out_of_desc++;
914 vxge_stop_tx_queue(fifo);
915 goto _exit2;
916 }
917
918 vxge_debug_tx(VXGE_TRACE,
919 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
920 dev->name, __func__, __LINE__,
921 fifo_hw, dtr, dtr_priv);
922
923 if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
924 u16 vlan_tag = vlan_tx_tag_get(skb);
925 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
926 }
927
928 first_frg_len = skb_headlen(skb);
929
930 dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
931 PCI_DMA_TODEVICE);
932
933 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
934 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
935 vxge_stop_tx_queue(fifo);
936 fifo->stats.pci_map_fail++;
937 goto _exit2;
938 }
939
940 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
941 txdl_priv->skb = skb;
942 txdl_priv->dma_buffers[j] = dma_pointer;
943
944 frg_cnt = skb_shinfo(skb)->nr_frags;
945 vxge_debug_tx(VXGE_TRACE,
946 "%s: %s:%d skb = %p txdl_priv = %p "
947 "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
948 __func__, __LINE__, skb, txdl_priv,
949 frg_cnt, (unsigned long long)dma_pointer);
950
951 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
952 first_frg_len);
953
954 frag = &skb_shinfo(skb)->frags[0];
955 for (i = 0; i < frg_cnt; i++) {
956 /* ignore 0 length fragment */
957 if (!frag->size)
958 continue;
959
960 dma_pointer =
961 (u64)pci_map_page(fifo->pdev, frag->page,
962 frag->page_offset, frag->size,
963 PCI_DMA_TODEVICE);
964
965 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
966 goto _exit0;
967 vxge_debug_tx(VXGE_TRACE,
968 "%s: %s:%d frag = %d dma_pointer = 0x%llx",
969 dev->name, __func__, __LINE__, i,
970 (unsigned long long)dma_pointer);
971
972 txdl_priv->dma_buffers[j] = dma_pointer;
973 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
974 frag->size);
975 frag += 1;
976 }
977
978 offload_type = vxge_offload_type(skb);
979
980 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
981
982 int mss = vxge_tcp_mss(skb);
983 if (mss) {
984 vxge_debug_tx(VXGE_TRACE,
985 "%s: %s:%d mss = %d",
986 dev->name, __func__, __LINE__, mss);
987 vxge_hw_fifo_txdl_mss_set(dtr, mss);
988 } else {
989 vxge_assert(skb->len <=
990 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
991 vxge_assert(0);
992 goto _exit1;
993 }
994 }
995
996 if (skb->ip_summed == CHECKSUM_PARTIAL)
997 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
998 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
999 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
1000 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
1001
1002 vxge_hw_fifo_txdl_post(fifo_hw, dtr);
1003 #ifdef NETIF_F_LLTX
1004 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
1005 #endif
1006 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1007
1008 VXGE_COMPLETE_VPATH_TX(fifo);
1009 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
1010 dev->name, __func__, __LINE__);
1011 return NETDEV_TX_OK;
1012
1013 _exit0:
1014 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1015
1016 _exit1:
1017 j = 0;
1018 frag = &skb_shinfo(skb)->frags[0];
1019
1020 pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1021 skb_headlen(skb), PCI_DMA_TODEVICE);
1022
1023 for (; j < i; j++) {
1024 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1025 frag->size, PCI_DMA_TODEVICE);
1026 frag += 1;
1027 }
1028
1029 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1030 _exit2:
1031 dev_kfree_skb(skb);
1032 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1033 VXGE_COMPLETE_VPATH_TX(fifo);
1034
1035 return NETDEV_TX_OK;
1036 }
1037
1038 /*
1039 * vxge_rx_term
1040 *
1041 * Function will be called by hw function to abort all outstanding receive
1042 * descriptors.
1043 */
1044 static void
1045 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1046 {
1047 struct vxge_ring *ring = (struct vxge_ring *)userdata;
1048 struct vxge_rx_priv *rx_priv =
1049 vxge_hw_ring_rxd_private_get(dtrh);
1050
1051 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1052 ring->ndev->name, __func__, __LINE__);
1053 if (state != VXGE_HW_RXD_STATE_POSTED)
1054 return;
1055
1056 pci_unmap_single(ring->pdev, rx_priv->data_dma,
1057 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1058
1059 dev_kfree_skb(rx_priv->skb);
1060 rx_priv->skb_data = NULL;
1061
1062 vxge_debug_entryexit(VXGE_TRACE,
1063 "%s: %s:%d Exiting...",
1064 ring->ndev->name, __func__, __LINE__);
1065 }
1066
1067 /*
1068 * vxge_tx_term
1069 *
1070 * Function will be called to abort all outstanding tx descriptors
1071 */
1072 static void
1073 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1074 {
1075 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1076 skb_frag_t *frag;
1077 int i = 0, j, frg_cnt;
1078 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1079 struct sk_buff *skb = txd_priv->skb;
1080
1081 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1082
1083 if (state != VXGE_HW_TXDL_STATE_POSTED)
1084 return;
1085
1086 /* check skb validity */
1087 vxge_assert(skb);
1088 frg_cnt = skb_shinfo(skb)->nr_frags;
1089 frag = &skb_shinfo(skb)->frags[0];
1090
1091 /* for unfragmented skb */
1092 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1093 skb_headlen(skb), PCI_DMA_TODEVICE);
1094
1095 for (j = 0; j < frg_cnt; j++) {
1096 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1097 frag->size, PCI_DMA_TODEVICE);
1098 frag += 1;
1099 }
1100
1101 dev_kfree_skb(skb);
1102
1103 vxge_debug_entryexit(VXGE_TRACE,
1104 "%s:%d Exiting...", __func__, __LINE__);
1105 }
1106
1107 /**
1108 * vxge_set_multicast
1109 * @dev: pointer to the device structure
1110 *
1111 * Entry point for multicast address enable/disable
1112 * This function is a driver entry point which gets called by the kernel
1113 * whenever multicast addresses must be enabled/disabled. This also gets
1114 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1115 * determine, if multicast address must be enabled or if promiscuous mode
1116 * is to be disabled etc.
1117 */
1118 static void vxge_set_multicast(struct net_device *dev)
1119 {
1120 struct dev_mc_list *mclist;
1121 struct vxgedev *vdev;
1122 int i, mcast_cnt = 0;
1123 struct __vxge_hw_device *hldev;
1124 enum vxge_hw_status status = VXGE_HW_OK;
1125 struct macInfo mac_info;
1126 int vpath_idx = 0;
1127 struct vxge_mac_addrs *mac_entry;
1128 struct list_head *list_head;
1129 struct list_head *entry, *next;
1130 u8 *mac_address = NULL;
1131
1132 vxge_debug_entryexit(VXGE_TRACE,
1133 "%s:%d", __func__, __LINE__);
1134
1135 vdev = (struct vxgedev *)netdev_priv(dev);
1136 hldev = (struct __vxge_hw_device *)vdev->devh;
1137
1138 if (unlikely(!is_vxge_card_up(vdev)))
1139 return;
1140
1141 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1142 for (i = 0; i < vdev->no_of_vpath; i++) {
1143 vxge_assert(vdev->vpaths[i].is_open);
1144 status = vxge_hw_vpath_mcast_enable(
1145 vdev->vpaths[i].handle);
1146 vdev->all_multi_flg = 1;
1147 }
1148 } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1149 for (i = 0; i < vdev->no_of_vpath; i++) {
1150 vxge_assert(vdev->vpaths[i].is_open);
1151 status = vxge_hw_vpath_mcast_disable(
1152 vdev->vpaths[i].handle);
1153 vdev->all_multi_flg = 1;
1154 }
1155 }
1156
1157 if (status != VXGE_HW_OK)
1158 vxge_debug_init(VXGE_ERR,
1159 "failed to %s multicast, status %d",
1160 dev->flags & IFF_ALLMULTI ?
1161 "enable" : "disable", status);
1162
1163 if (!vdev->config.addr_learn_en) {
1164 if (dev->flags & IFF_PROMISC) {
1165 for (i = 0; i < vdev->no_of_vpath; i++) {
1166 vxge_assert(vdev->vpaths[i].is_open);
1167 status = vxge_hw_vpath_promisc_enable(
1168 vdev->vpaths[i].handle);
1169 }
1170 } else {
1171 for (i = 0; i < vdev->no_of_vpath; i++) {
1172 vxge_assert(vdev->vpaths[i].is_open);
1173 status = vxge_hw_vpath_promisc_disable(
1174 vdev->vpaths[i].handle);
1175 }
1176 }
1177 }
1178
1179 memset(&mac_info, 0, sizeof(struct macInfo));
1180 /* Update individual M_CAST address list */
1181 if ((!vdev->all_multi_flg) && dev->mc_count) {
1182
1183 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1184 list_head = &vdev->vpaths[0].mac_addr_list;
1185 if ((dev->mc_count +
1186 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1187 vdev->vpaths[0].max_mac_addr_cnt)
1188 goto _set_all_mcast;
1189
1190 /* Delete previous MC's */
1191 for (i = 0; i < mcast_cnt; i++) {
1192 if (!list_empty(list_head))
1193 mac_entry = (struct vxge_mac_addrs *)
1194 list_first_entry(list_head,
1195 struct vxge_mac_addrs,
1196 item);
1197
1198 list_for_each_safe(entry, next, list_head) {
1199
1200 mac_entry = (struct vxge_mac_addrs *) entry;
1201 /* Copy the mac address to delete */
1202 mac_address = (u8 *)&mac_entry->macaddr;
1203 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1204
1205 /* Is this a multicast address */
1206 if (0x01 & mac_info.macaddr[0]) {
1207 for (vpath_idx = 0; vpath_idx <
1208 vdev->no_of_vpath;
1209 vpath_idx++) {
1210 mac_info.vpath_no = vpath_idx;
1211 status = vxge_del_mac_addr(
1212 vdev,
1213 &mac_info);
1214 }
1215 }
1216 }
1217 }
1218
1219 /* Add new ones */
1220 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1221 i++, mclist = mclist->next) {
1222
1223 memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1224 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1225 vpath_idx++) {
1226 mac_info.vpath_no = vpath_idx;
1227 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1228 status = vxge_add_mac_addr(vdev, &mac_info);
1229 if (status != VXGE_HW_OK) {
1230 vxge_debug_init(VXGE_ERR,
1231 "%s:%d Setting individual"
1232 "multicast address failed",
1233 __func__, __LINE__);
1234 goto _set_all_mcast;
1235 }
1236 }
1237 }
1238
1239 return;
1240 _set_all_mcast:
1241 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1242 /* Delete previous MC's */
1243 for (i = 0; i < mcast_cnt; i++) {
1244
1245 list_for_each_safe(entry, next, list_head) {
1246
1247 mac_entry = (struct vxge_mac_addrs *) entry;
1248 /* Copy the mac address to delete */
1249 mac_address = (u8 *)&mac_entry->macaddr;
1250 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1251
1252 /* Is this a multicast address */
1253 if (0x01 & mac_info.macaddr[0])
1254 break;
1255 }
1256
1257 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1258 vpath_idx++) {
1259 mac_info.vpath_no = vpath_idx;
1260 status = vxge_del_mac_addr(vdev, &mac_info);
1261 }
1262 }
1263
1264 /* Enable all multicast */
1265 for (i = 0; i < vdev->no_of_vpath; i++) {
1266 vxge_assert(vdev->vpaths[i].is_open);
1267 status = vxge_hw_vpath_mcast_enable(
1268 vdev->vpaths[i].handle);
1269 if (status != VXGE_HW_OK) {
1270 vxge_debug_init(VXGE_ERR,
1271 "%s:%d Enabling all multicasts failed",
1272 __func__, __LINE__);
1273 }
1274 vdev->all_multi_flg = 1;
1275 }
1276 dev->flags |= IFF_ALLMULTI;
1277 }
1278
1279 vxge_debug_entryexit(VXGE_TRACE,
1280 "%s:%d Exiting...", __func__, __LINE__);
1281 }
1282
1283 /**
1284 * vxge_set_mac_addr
1285 * @dev: pointer to the device structure
1286 *
1287 * Update entry "0" (default MAC addr)
1288 */
1289 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1290 {
1291 struct sockaddr *addr = p;
1292 struct vxgedev *vdev;
1293 struct __vxge_hw_device *hldev;
1294 enum vxge_hw_status status = VXGE_HW_OK;
1295 struct macInfo mac_info_new, mac_info_old;
1296 int vpath_idx = 0;
1297
1298 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1299
1300 vdev = (struct vxgedev *)netdev_priv(dev);
1301 hldev = vdev->devh;
1302
1303 if (!is_valid_ether_addr(addr->sa_data))
1304 return -EINVAL;
1305
1306 memset(&mac_info_new, 0, sizeof(struct macInfo));
1307 memset(&mac_info_old, 0, sizeof(struct macInfo));
1308
1309 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...",
1310 __func__, __LINE__);
1311
1312 /* Get the old address */
1313 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1314
1315 /* Copy the new address */
1316 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1317
1318 /* First delete the old mac address from all the vpaths
1319 as we can't specify the index while adding new mac address */
1320 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1321 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1322 if (!vpath->is_open) {
1323 /* This can happen when this interface is added/removed
1324 to the bonding interface. Delete this station address
1325 from the linked list */
1326 vxge_mac_list_del(vpath, &mac_info_old);
1327
1328 /* Add this new address to the linked list
1329 for later restoring */
1330 vxge_mac_list_add(vpath, &mac_info_new);
1331
1332 continue;
1333 }
1334 /* Delete the station address */
1335 mac_info_old.vpath_no = vpath_idx;
1336 status = vxge_del_mac_addr(vdev, &mac_info_old);
1337 }
1338
1339 if (unlikely(!is_vxge_card_up(vdev))) {
1340 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1341 return VXGE_HW_OK;
1342 }
1343
1344 /* Set this mac address to all the vpaths */
1345 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1346 mac_info_new.vpath_no = vpath_idx;
1347 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1348 status = vxge_add_mac_addr(vdev, &mac_info_new);
1349 if (status != VXGE_HW_OK)
1350 return -EINVAL;
1351 }
1352
1353 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1354
1355 return status;
1356 }
1357
1358 /*
1359 * vxge_vpath_intr_enable
1360 * @vdev: pointer to vdev
1361 * @vp_id: vpath for which to enable the interrupts
1362 *
1363 * Enables the interrupts for the vpath
1364 */
1365 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1366 {
1367 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1368 int msix_id, alarm_msix_id;
1369 int tim_msix_id[4] = {[0 ...3] = 0};
1370
1371 vxge_hw_vpath_intr_enable(vpath->handle);
1372
1373 if (vdev->config.intr_type == INTA)
1374 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1375 else {
1376 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1377 alarm_msix_id =
1378 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1379
1380 tim_msix_id[0] = msix_id;
1381 tim_msix_id[1] = msix_id + 1;
1382 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1383 alarm_msix_id);
1384
1385 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1386 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1387
1388 /* enable the alarm vector */
1389 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
1390 }
1391 }
1392
1393 /*
1394 * vxge_vpath_intr_disable
1395 * @vdev: pointer to vdev
1396 * @vp_id: vpath for which to disable the interrupts
1397 *
1398 * Disables the interrupts for the vpath
1399 */
1400 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1401 {
1402 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1403 int msix_id;
1404
1405 vxge_hw_vpath_intr_disable(vpath->handle);
1406
1407 if (vdev->config.intr_type == INTA)
1408 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1409 else {
1410 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1411 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1412 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1413
1414 /* disable the alarm vector */
1415 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1416 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1417 }
1418 }
1419
1420 /*
1421 * vxge_reset_vpath
1422 * @vdev: pointer to vdev
1423 * @vp_id: vpath to reset
1424 *
1425 * Resets the vpath
1426 */
1427 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1428 {
1429 enum vxge_hw_status status = VXGE_HW_OK;
1430 int ret = 0;
1431
1432 /* check if device is down already */
1433 if (unlikely(!is_vxge_card_up(vdev)))
1434 return 0;
1435
1436 /* is device reset already scheduled */
1437 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1438 return 0;
1439
1440 if (vdev->vpaths[vp_id].handle) {
1441 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1442 == VXGE_HW_OK) {
1443 if (is_vxge_card_up(vdev) &&
1444 vxge_hw_vpath_recover_from_reset(
1445 vdev->vpaths[vp_id].handle)
1446 != VXGE_HW_OK) {
1447 vxge_debug_init(VXGE_ERR,
1448 "vxge_hw_vpath_recover_from_reset"
1449 "failed for vpath:%d", vp_id);
1450 return status;
1451 }
1452 } else {
1453 vxge_debug_init(VXGE_ERR,
1454 "vxge_hw_vpath_reset failed for"
1455 "vpath:%d", vp_id);
1456 return status;
1457 }
1458 } else
1459 return VXGE_HW_FAIL;
1460
1461 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1462 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1463
1464 /* Enable all broadcast */
1465 vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1466
1467 /* Enable the interrupts */
1468 vxge_vpath_intr_enable(vdev, vp_id);
1469
1470 smp_wmb();
1471
1472 /* Enable the flow of traffic through the vpath */
1473 vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1474
1475 smp_wmb();
1476 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1477 vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1478
1479 /* Vpath reset done */
1480 clear_bit(vp_id, &vdev->vp_reset);
1481
1482 /* Start the vpath queue */
1483 vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1484
1485 return ret;
1486 }
1487
1488 static int do_vxge_reset(struct vxgedev *vdev, int event)
1489 {
1490 enum vxge_hw_status status;
1491 int ret = 0, vp_id, i;
1492
1493 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1494
1495 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1496 /* check if device is down already */
1497 if (unlikely(!is_vxge_card_up(vdev)))
1498 return 0;
1499
1500 /* is reset already scheduled */
1501 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1502 return 0;
1503 }
1504
1505 if (event == VXGE_LL_FULL_RESET) {
1506 /* wait for all the vpath reset to complete */
1507 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1508 while (test_bit(vp_id, &vdev->vp_reset))
1509 msleep(50);
1510 }
1511
1512 /* if execution mode is set to debug, don't reset the adapter */
1513 if (unlikely(vdev->exec_mode)) {
1514 vxge_debug_init(VXGE_ERR,
1515 "%s: execution mode is debug, returning..",
1516 vdev->ndev->name);
1517 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1518 vxge_stop_all_tx_queue(vdev);
1519 return 0;
1520 }
1521 }
1522
1523 if (event == VXGE_LL_FULL_RESET) {
1524 vxge_hw_device_intr_disable(vdev->devh);
1525
1526 switch (vdev->cric_err_event) {
1527 case VXGE_HW_EVENT_UNKNOWN:
1528 vxge_stop_all_tx_queue(vdev);
1529 vxge_debug_init(VXGE_ERR,
1530 "fatal: %s: Disabling device due to"
1531 "unknown error",
1532 vdev->ndev->name);
1533 ret = -EPERM;
1534 goto out;
1535 case VXGE_HW_EVENT_RESET_START:
1536 break;
1537 case VXGE_HW_EVENT_RESET_COMPLETE:
1538 case VXGE_HW_EVENT_LINK_DOWN:
1539 case VXGE_HW_EVENT_LINK_UP:
1540 case VXGE_HW_EVENT_ALARM_CLEARED:
1541 case VXGE_HW_EVENT_ECCERR:
1542 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1543 ret = -EPERM;
1544 goto out;
1545 case VXGE_HW_EVENT_FIFO_ERR:
1546 case VXGE_HW_EVENT_VPATH_ERR:
1547 break;
1548 case VXGE_HW_EVENT_CRITICAL_ERR:
1549 vxge_stop_all_tx_queue(vdev);
1550 vxge_debug_init(VXGE_ERR,
1551 "fatal: %s: Disabling device due to"
1552 "serious error",
1553 vdev->ndev->name);
1554 /* SOP or device reset required */
1555 /* This event is not currently used */
1556 ret = -EPERM;
1557 goto out;
1558 case VXGE_HW_EVENT_SERR:
1559 vxge_stop_all_tx_queue(vdev);
1560 vxge_debug_init(VXGE_ERR,
1561 "fatal: %s: Disabling device due to"
1562 "serious error",
1563 vdev->ndev->name);
1564 ret = -EPERM;
1565 goto out;
1566 case VXGE_HW_EVENT_SRPCIM_SERR:
1567 case VXGE_HW_EVENT_MRPCIM_SERR:
1568 ret = -EPERM;
1569 goto out;
1570 case VXGE_HW_EVENT_SLOT_FREEZE:
1571 vxge_stop_all_tx_queue(vdev);
1572 vxge_debug_init(VXGE_ERR,
1573 "fatal: %s: Disabling device due to"
1574 "slot freeze",
1575 vdev->ndev->name);
1576 ret = -EPERM;
1577 goto out;
1578 default:
1579 break;
1580
1581 }
1582 }
1583
1584 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1585 vxge_stop_all_tx_queue(vdev);
1586
1587 if (event == VXGE_LL_FULL_RESET) {
1588 status = vxge_reset_all_vpaths(vdev);
1589 if (status != VXGE_HW_OK) {
1590 vxge_debug_init(VXGE_ERR,
1591 "fatal: %s: can not reset vpaths",
1592 vdev->ndev->name);
1593 ret = -EPERM;
1594 goto out;
1595 }
1596 }
1597
1598 if (event == VXGE_LL_COMPL_RESET) {
1599 for (i = 0; i < vdev->no_of_vpath; i++)
1600 if (vdev->vpaths[i].handle) {
1601 if (vxge_hw_vpath_recover_from_reset(
1602 vdev->vpaths[i].handle)
1603 != VXGE_HW_OK) {
1604 vxge_debug_init(VXGE_ERR,
1605 "vxge_hw_vpath_recover_"
1606 "from_reset failed for vpath: "
1607 "%d", i);
1608 ret = -EPERM;
1609 goto out;
1610 }
1611 } else {
1612 vxge_debug_init(VXGE_ERR,
1613 "vxge_hw_vpath_reset failed for "
1614 "vpath:%d", i);
1615 ret = -EPERM;
1616 goto out;
1617 }
1618 }
1619
1620 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1621 /* Reprogram the DA table with populated mac addresses */
1622 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1623 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1624 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1625 }
1626
1627 /* enable vpath interrupts */
1628 for (i = 0; i < vdev->no_of_vpath; i++)
1629 vxge_vpath_intr_enable(vdev, i);
1630
1631 vxge_hw_device_intr_enable(vdev->devh);
1632
1633 smp_wmb();
1634
1635 /* Indicate card up */
1636 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1637
1638 /* Get the traffic to flow through the vpaths */
1639 for (i = 0; i < vdev->no_of_vpath; i++) {
1640 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1641 smp_wmb();
1642 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1643 }
1644
1645 vxge_wake_all_tx_queue(vdev);
1646 }
1647
1648 out:
1649 vxge_debug_entryexit(VXGE_TRACE,
1650 "%s:%d Exiting...", __func__, __LINE__);
1651
1652 /* Indicate reset done */
1653 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1654 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1655 return ret;
1656 }
1657
1658 /*
1659 * vxge_reset
1660 * @vdev: pointer to ll device
1661 *
1662 * driver may reset the chip on events of serr, eccerr, etc
1663 */
1664 int vxge_reset(struct vxgedev *vdev)
1665 {
1666 do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1667 return 0;
1668 }
1669
1670 /**
1671 * vxge_poll - Receive handler when Receive Polling is used.
1672 * @dev: pointer to the device structure.
1673 * @budget: Number of packets budgeted to be processed in this iteration.
1674 *
1675 * This function comes into picture only if Receive side is being handled
1676 * through polling (called NAPI in linux). It mostly does what the normal
1677 * Rx interrupt handler does in terms of descriptor and packet processing
1678 * but not in an interrupt context. Also it will process a specified number
1679 * of packets at most in one iteration. This value is passed down by the
1680 * kernel as the function argument 'budget'.
1681 */
1682 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1683 {
1684 struct vxge_ring *ring =
1685 container_of(napi, struct vxge_ring, napi);
1686 int budget_org = budget;
1687 ring->budget = budget;
1688
1689 vxge_hw_vpath_poll_rx(ring->handle);
1690
1691 if (ring->pkts_processed < budget_org) {
1692 napi_complete(napi);
1693 /* Re enable the Rx interrupts for the vpath */
1694 vxge_hw_channel_msix_unmask(
1695 (struct __vxge_hw_channel *)ring->handle,
1696 ring->rx_vector_no);
1697 }
1698
1699 return ring->pkts_processed;
1700 }
1701
1702 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1703 {
1704 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1705 int pkts_processed = 0;
1706 int i;
1707 int budget_org = budget;
1708 struct vxge_ring *ring;
1709
1710 struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)
1711 pci_get_drvdata(vdev->pdev);
1712
1713 for (i = 0; i < vdev->no_of_vpath; i++) {
1714 ring = &vdev->vpaths[i].ring;
1715 ring->budget = budget;
1716 vxge_hw_vpath_poll_rx(ring->handle);
1717 pkts_processed += ring->pkts_processed;
1718 budget -= ring->pkts_processed;
1719 if (budget <= 0)
1720 break;
1721 }
1722
1723 VXGE_COMPLETE_ALL_TX(vdev);
1724
1725 if (pkts_processed < budget_org) {
1726 napi_complete(napi);
1727 /* Re enable the Rx interrupts for the ring */
1728 vxge_hw_device_unmask_all(hldev);
1729 vxge_hw_device_flush_io(hldev);
1730 }
1731
1732 return pkts_processed;
1733 }
1734
1735 #ifdef CONFIG_NET_POLL_CONTROLLER
1736 /**
1737 * vxge_netpoll - netpoll event handler entry point
1738 * @dev : pointer to the device structure.
1739 * Description:
1740 * This function will be called by upper layer to check for events on the
1741 * interface in situations where interrupts are disabled. It is used for
1742 * specific in-kernel networking tasks, such as remote consoles and kernel
1743 * debugging over the network (example netdump in RedHat).
1744 */
1745 static void vxge_netpoll(struct net_device *dev)
1746 {
1747 struct __vxge_hw_device *hldev;
1748 struct vxgedev *vdev;
1749
1750 vdev = (struct vxgedev *)netdev_priv(dev);
1751 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1752
1753 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1754
1755 if (pci_channel_offline(vdev->pdev))
1756 return;
1757
1758 disable_irq(dev->irq);
1759 vxge_hw_device_clear_tx_rx(hldev);
1760
1761 vxge_hw_device_clear_tx_rx(hldev);
1762 VXGE_COMPLETE_ALL_RX(vdev);
1763 VXGE_COMPLETE_ALL_TX(vdev);
1764
1765 enable_irq(dev->irq);
1766
1767 vxge_debug_entryexit(VXGE_TRACE,
1768 "%s:%d Exiting...", __func__, __LINE__);
1769 return;
1770 }
1771 #endif
1772
1773 /* RTH configuration */
1774 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1775 {
1776 enum vxge_hw_status status = VXGE_HW_OK;
1777 struct vxge_hw_rth_hash_types hash_types;
1778 u8 itable[256] = {0}; /* indirection table */
1779 u8 mtable[256] = {0}; /* CPU to vpath mapping */
1780 int index;
1781
1782 /*
1783 * Filling
1784 * - itable with bucket numbers
1785 * - mtable with bucket-to-vpath mapping
1786 */
1787 for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1788 itable[index] = index;
1789 mtable[index] = index % vdev->no_of_vpath;
1790 }
1791
1792 /* Fill RTH hash types */
1793 hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4;
1794 hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4;
1795 hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6;
1796 hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6;
1797 hash_types.hash_type_tcpipv6ex_en =
1798 vdev->config.rth_hash_type_tcpipv6ex;
1799 hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex;
1800
1801 /* set indirection table, bucket-to-vpath mapping */
1802 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1803 vdev->no_of_vpath,
1804 mtable, itable,
1805 vdev->config.rth_bkt_sz);
1806 if (status != VXGE_HW_OK) {
1807 vxge_debug_init(VXGE_ERR,
1808 "RTH indirection table configuration failed "
1809 "for vpath:%d", vdev->vpaths[0].device_id);
1810 return status;
1811 }
1812
1813 /*
1814 * Because the itable_set() method uses the active_table field
1815 * for the target virtual path the RTH config should be updated
1816 * for all VPATHs. The h/w only uses the lowest numbered VPATH
1817 * when steering frames.
1818 */
1819 for (index = 0; index < vdev->no_of_vpath; index++) {
1820 status = vxge_hw_vpath_rts_rth_set(
1821 vdev->vpaths[index].handle,
1822 vdev->config.rth_algorithm,
1823 &hash_types,
1824 vdev->config.rth_bkt_sz);
1825
1826 if (status != VXGE_HW_OK) {
1827 vxge_debug_init(VXGE_ERR,
1828 "RTH configuration failed for vpath:%d",
1829 vdev->vpaths[index].device_id);
1830 return status;
1831 }
1832 }
1833
1834 return status;
1835 }
1836
1837 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1838 {
1839 struct vxge_mac_addrs *new_mac_entry;
1840 u8 *mac_address = NULL;
1841
1842 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1843 return TRUE;
1844
1845 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1846 if (!new_mac_entry) {
1847 vxge_debug_mem(VXGE_ERR,
1848 "%s: memory allocation failed",
1849 VXGE_DRIVER_NAME);
1850 return FALSE;
1851 }
1852
1853 list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1854
1855 /* Copy the new mac address to the list */
1856 mac_address = (u8 *)&new_mac_entry->macaddr;
1857 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1858
1859 new_mac_entry->state = mac->state;
1860 vpath->mac_addr_cnt++;
1861
1862 /* Is this a multicast address */
1863 if (0x01 & mac->macaddr[0])
1864 vpath->mcast_addr_cnt++;
1865
1866 return TRUE;
1867 }
1868
1869 /* Add a mac address to DA table */
1870 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1871 {
1872 enum vxge_hw_status status = VXGE_HW_OK;
1873 struct vxge_vpath *vpath;
1874 enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1875
1876 if (0x01 & mac->macaddr[0]) /* multicast address */
1877 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1878 else
1879 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1880
1881 vpath = &vdev->vpaths[mac->vpath_no];
1882 status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1883 mac->macmask, duplicate_mode);
1884 if (status != VXGE_HW_OK) {
1885 vxge_debug_init(VXGE_ERR,
1886 "DA config add entry failed for vpath:%d",
1887 vpath->device_id);
1888 } else
1889 if (FALSE == vxge_mac_list_add(vpath, mac))
1890 status = -EPERM;
1891
1892 return status;
1893 }
1894
1895 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1896 {
1897 struct list_head *entry, *next;
1898 u64 del_mac = 0;
1899 u8 *mac_address = (u8 *) (&del_mac);
1900
1901 /* Copy the mac address to delete from the list */
1902 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1903
1904 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1905 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1906 list_del(entry);
1907 kfree((struct vxge_mac_addrs *)entry);
1908 vpath->mac_addr_cnt--;
1909
1910 /* Is this a multicast address */
1911 if (0x01 & mac->macaddr[0])
1912 vpath->mcast_addr_cnt--;
1913 return TRUE;
1914 }
1915 }
1916
1917 return FALSE;
1918 }
1919 /* delete a mac address from DA table */
1920 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1921 {
1922 enum vxge_hw_status status = VXGE_HW_OK;
1923 struct vxge_vpath *vpath;
1924
1925 vpath = &vdev->vpaths[mac->vpath_no];
1926 status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1927 mac->macmask);
1928 if (status != VXGE_HW_OK) {
1929 vxge_debug_init(VXGE_ERR,
1930 "DA config delete entry failed for vpath:%d",
1931 vpath->device_id);
1932 } else
1933 vxge_mac_list_del(vpath, mac);
1934 return status;
1935 }
1936
1937 /* list all mac addresses from DA table */
1938 enum vxge_hw_status
1939 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1940 struct macInfo *mac)
1941 {
1942 enum vxge_hw_status status = VXGE_HW_OK;
1943 unsigned char macmask[ETH_ALEN];
1944 unsigned char macaddr[ETH_ALEN];
1945
1946 status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1947 macaddr, macmask);
1948 if (status != VXGE_HW_OK) {
1949 vxge_debug_init(VXGE_ERR,
1950 "DA config list entry failed for vpath:%d",
1951 vpath->device_id);
1952 return status;
1953 }
1954
1955 while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1956
1957 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1958 macaddr, macmask);
1959 if (status != VXGE_HW_OK)
1960 break;
1961 }
1962
1963 return status;
1964 }
1965
1966 /* Store all vlan ids from the list to the vid table */
1967 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1968 {
1969 enum vxge_hw_status status = VXGE_HW_OK;
1970 struct vxgedev *vdev = vpath->vdev;
1971 u16 vid;
1972
1973 if (vdev->vlgrp && vpath->is_open) {
1974
1975 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1976 if (!vlan_group_get_device(vdev->vlgrp, vid))
1977 continue;
1978 /* Add these vlan to the vid table */
1979 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1980 }
1981 }
1982
1983 return status;
1984 }
1985
1986 /* Store all mac addresses from the list to the DA table */
1987 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1988 {
1989 enum vxge_hw_status status = VXGE_HW_OK;
1990 struct macInfo mac_info;
1991 u8 *mac_address = NULL;
1992 struct list_head *entry, *next;
1993
1994 memset(&mac_info, 0, sizeof(struct macInfo));
1995
1996 if (vpath->is_open) {
1997
1998 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1999 mac_address =
2000 (u8 *)&
2001 ((struct vxge_mac_addrs *)entry)->macaddr;
2002 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
2003 ((struct vxge_mac_addrs *)entry)->state =
2004 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
2005 /* does this mac address already exist in da table? */
2006 status = vxge_search_mac_addr_in_da_table(vpath,
2007 &mac_info);
2008 if (status != VXGE_HW_OK) {
2009 /* Add this mac address to the DA table */
2010 status = vxge_hw_vpath_mac_addr_add(
2011 vpath->handle, mac_info.macaddr,
2012 mac_info.macmask,
2013 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2014 if (status != VXGE_HW_OK) {
2015 vxge_debug_init(VXGE_ERR,
2016 "DA add entry failed for vpath:%d",
2017 vpath->device_id);
2018 ((struct vxge_mac_addrs *)entry)->state
2019 = VXGE_LL_MAC_ADDR_IN_LIST;
2020 }
2021 }
2022 }
2023 }
2024
2025 return status;
2026 }
2027
2028 /* reset vpaths */
2029 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2030 {
2031 int i;
2032 enum vxge_hw_status status = VXGE_HW_OK;
2033
2034 for (i = 0; i < vdev->no_of_vpath; i++)
2035 if (vdev->vpaths[i].handle) {
2036 if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2037 == VXGE_HW_OK) {
2038 if (is_vxge_card_up(vdev) &&
2039 vxge_hw_vpath_recover_from_reset(
2040 vdev->vpaths[i].handle)
2041 != VXGE_HW_OK) {
2042 vxge_debug_init(VXGE_ERR,
2043 "vxge_hw_vpath_recover_"
2044 "from_reset failed for vpath: "
2045 "%d", i);
2046 return status;
2047 }
2048 } else {
2049 vxge_debug_init(VXGE_ERR,
2050 "vxge_hw_vpath_reset failed for "
2051 "vpath:%d", i);
2052 return status;
2053 }
2054 }
2055 return status;
2056 }
2057
2058 /* close vpaths */
2059 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2060 {
2061 int i;
2062 for (i = index; i < vdev->no_of_vpath; i++) {
2063 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2064 vxge_hw_vpath_close(vdev->vpaths[i].handle);
2065 vdev->stats.vpaths_open--;
2066 }
2067 vdev->vpaths[i].is_open = 0;
2068 vdev->vpaths[i].handle = NULL;
2069 }
2070 }
2071
2072 /* open vpaths */
2073 int vxge_open_vpaths(struct vxgedev *vdev)
2074 {
2075 enum vxge_hw_status status;
2076 int i;
2077 u32 vp_id = 0;
2078 struct vxge_hw_vpath_attr attr;
2079
2080 for (i = 0; i < vdev->no_of_vpath; i++) {
2081 vxge_assert(vdev->vpaths[i].is_configured);
2082 attr.vp_id = vdev->vpaths[i].device_id;
2083 attr.fifo_attr.callback = vxge_xmit_compl;
2084 attr.fifo_attr.txdl_term = vxge_tx_term;
2085 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2086 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2087
2088 attr.ring_attr.callback = vxge_rx_1b_compl;
2089 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2090 attr.ring_attr.rxd_term = vxge_rx_term;
2091 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2092 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2093
2094 vdev->vpaths[i].ring.ndev = vdev->ndev;
2095 vdev->vpaths[i].ring.pdev = vdev->pdev;
2096 status = vxge_hw_vpath_open(vdev->devh, &attr,
2097 &(vdev->vpaths[i].handle));
2098 if (status == VXGE_HW_OK) {
2099 vdev->vpaths[i].fifo.handle =
2100 (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2101 vdev->vpaths[i].ring.handle =
2102 (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2103 vdev->vpaths[i].fifo.tx_steering_type =
2104 vdev->config.tx_steering_type;
2105 vdev->vpaths[i].fifo.ndev = vdev->ndev;
2106 vdev->vpaths[i].fifo.pdev = vdev->pdev;
2107 vdev->vpaths[i].fifo.indicate_max_pkts =
2108 vdev->config.fifo_indicate_max_pkts;
2109 vdev->vpaths[i].ring.rx_vector_no = 0;
2110 vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2111 vdev->vpaths[i].is_open = 1;
2112 vdev->vp_handles[i] = vdev->vpaths[i].handle;
2113 vdev->vpaths[i].ring.gro_enable =
2114 vdev->config.gro_enable;
2115 vdev->vpaths[i].ring.vlan_tag_strip =
2116 vdev->vlan_tag_strip;
2117 vdev->stats.vpaths_open++;
2118 } else {
2119 vdev->stats.vpath_open_fail++;
2120 vxge_debug_init(VXGE_ERR,
2121 "%s: vpath: %d failed to open "
2122 "with status: %d",
2123 vdev->ndev->name, vdev->vpaths[i].device_id,
2124 status);
2125 vxge_close_vpaths(vdev, 0);
2126 return -EPERM;
2127 }
2128
2129 vp_id =
2130 ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2131 vpath->vp_id;
2132 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2133 }
2134 return VXGE_HW_OK;
2135 }
2136
2137 /*
2138 * vxge_isr_napi
2139 * @irq: the irq of the device.
2140 * @dev_id: a void pointer to the hldev structure of the Titan device
2141 * @ptregs: pointer to the registers pushed on the stack.
2142 *
2143 * This function is the ISR handler of the device when napi is enabled. It
2144 * identifies the reason for the interrupt and calls the relevant service
2145 * routines.
2146 */
2147 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2148 {
2149 struct net_device *dev;
2150 struct __vxge_hw_device *hldev;
2151 u64 reason;
2152 enum vxge_hw_status status;
2153 struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2154
2155 vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2156
2157 dev = vdev->ndev;
2158 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2159
2160 if (pci_channel_offline(vdev->pdev))
2161 return IRQ_NONE;
2162
2163 if (unlikely(!is_vxge_card_up(vdev)))
2164 return IRQ_NONE;
2165
2166 status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2167 &reason);
2168 if (status == VXGE_HW_OK) {
2169 vxge_hw_device_mask_all(hldev);
2170
2171 if (reason &
2172 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2173 vdev->vpaths_deployed >>
2174 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2175
2176 vxge_hw_device_clear_tx_rx(hldev);
2177 napi_schedule(&vdev->napi);
2178 vxge_debug_intr(VXGE_TRACE,
2179 "%s:%d Exiting...", __func__, __LINE__);
2180 return IRQ_HANDLED;
2181 } else
2182 vxge_hw_device_unmask_all(hldev);
2183 } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2184 (status == VXGE_HW_ERR_CRITICAL) ||
2185 (status == VXGE_HW_ERR_FIFO))) {
2186 vxge_hw_device_mask_all(hldev);
2187 vxge_hw_device_flush_io(hldev);
2188 return IRQ_HANDLED;
2189 } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2190 return IRQ_HANDLED;
2191
2192 vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__);
2193 return IRQ_NONE;
2194 }
2195
2196 #ifdef CONFIG_PCI_MSI
2197
2198 static irqreturn_t
2199 vxge_tx_msix_handle(int irq, void *dev_id)
2200 {
2201 struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2202
2203 VXGE_COMPLETE_VPATH_TX(fifo);
2204
2205 return IRQ_HANDLED;
2206 }
2207
2208 static irqreturn_t
2209 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2210 {
2211 struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2212
2213 /* MSIX_IDX for Rx is 1 */
2214 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2215 ring->rx_vector_no);
2216
2217 napi_schedule(&ring->napi);
2218 return IRQ_HANDLED;
2219 }
2220
2221 static irqreturn_t
2222 vxge_alarm_msix_handle(int irq, void *dev_id)
2223 {
2224 int i;
2225 enum vxge_hw_status status;
2226 struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2227 struct vxgedev *vdev = vpath->vdev;
2228 int alarm_msix_id =
2229 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2230
2231 for (i = 0; i < vdev->no_of_vpath; i++) {
2232 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2233 alarm_msix_id);
2234
2235 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2236 vdev->exec_mode);
2237 if (status == VXGE_HW_OK) {
2238
2239 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2240 alarm_msix_id);
2241 continue;
2242 }
2243 vxge_debug_intr(VXGE_ERR,
2244 "%s: vxge_hw_vpath_alarm_process failed %x ",
2245 VXGE_DRIVER_NAME, status);
2246 }
2247 return IRQ_HANDLED;
2248 }
2249
2250 static int vxge_alloc_msix(struct vxgedev *vdev)
2251 {
2252 int j, i, ret = 0;
2253 int intr_cnt = 0;
2254 int alarm_msix_id = 0, msix_intr_vect = 0;
2255 vdev->intr_cnt = 0;
2256
2257 /* Tx/Rx MSIX Vectors count */
2258 vdev->intr_cnt = vdev->no_of_vpath * 2;
2259
2260 /* Alarm MSIX Vectors count */
2261 vdev->intr_cnt++;
2262
2263 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2264 vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2265 GFP_KERNEL);
2266 if (!vdev->entries) {
2267 vxge_debug_init(VXGE_ERR,
2268 "%s: memory allocation failed",
2269 VXGE_DRIVER_NAME);
2270 return -ENOMEM;
2271 }
2272
2273 vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2274 GFP_KERNEL);
2275 if (!vdev->vxge_entries) {
2276 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2277 VXGE_DRIVER_NAME);
2278 kfree(vdev->entries);
2279 return -ENOMEM;
2280 }
2281
2282 /* Last vector in the list is used for alarm */
2283 alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2284 for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2285
2286 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2287
2288 /* Initialize the fifo vector */
2289 vdev->entries[j].entry = msix_intr_vect;
2290 vdev->vxge_entries[j].entry = msix_intr_vect;
2291 vdev->vxge_entries[j].in_use = 0;
2292 j++;
2293
2294 /* Initialize the ring vector */
2295 vdev->entries[j].entry = msix_intr_vect + 1;
2296 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2297 vdev->vxge_entries[j].in_use = 0;
2298 j++;
2299 }
2300
2301 /* Initialize the alarm vector */
2302 vdev->entries[j].entry = alarm_msix_id;
2303 vdev->vxge_entries[j].entry = alarm_msix_id;
2304 vdev->vxge_entries[j].in_use = 0;
2305
2306 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2307 /* if driver request exceeeds available irq's, request with a small
2308 * number.
2309 */
2310 if (ret > 0) {
2311 vxge_debug_init(VXGE_ERR,
2312 "%s: MSI-X enable failed for %d vectors, available: %d",
2313 VXGE_DRIVER_NAME, intr_cnt, ret);
2314 vdev->max_vpath_supported = vdev->no_of_vpath;
2315 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2316
2317 /* Reset the alarm vector setting */
2318 vdev->entries[j].entry = 0;
2319 vdev->vxge_entries[j].entry = 0;
2320
2321 /* Initialize the alarm vector with new setting */
2322 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2323 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2324 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2325
2326 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2327 if (!ret)
2328 vxge_debug_init(VXGE_ERR,
2329 "%s: MSI-X enabled for %d vectors",
2330 VXGE_DRIVER_NAME, intr_cnt);
2331 }
2332
2333 if (ret) {
2334 vxge_debug_init(VXGE_ERR,
2335 "%s: MSI-X enable failed for %d vectors, ret: %d",
2336 VXGE_DRIVER_NAME, intr_cnt, ret);
2337 kfree(vdev->entries);
2338 kfree(vdev->vxge_entries);
2339 vdev->entries = NULL;
2340 vdev->vxge_entries = NULL;
2341 return -ENODEV;
2342 }
2343 return 0;
2344 }
2345
2346 static int vxge_enable_msix(struct vxgedev *vdev)
2347 {
2348
2349 int i, ret = 0;
2350 enum vxge_hw_status status;
2351 /* 0 - Tx, 1 - Rx */
2352 int tim_msix_id[4];
2353 int alarm_msix_id = 0, msix_intr_vect = 0;
2354 vdev->intr_cnt = 0;
2355
2356 /* allocate msix vectors */
2357 ret = vxge_alloc_msix(vdev);
2358 if (!ret) {
2359 /* Last vector in the list is used for alarm */
2360 alarm_msix_id =
2361 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2362 for (i = 0; i < vdev->no_of_vpath; i++) {
2363
2364 /* If fifo or ring are not enabled
2365 the MSIX vector for that should be set to 0
2366 Hence initializeing this array to all 0s.
2367 */
2368 memset(tim_msix_id, 0, sizeof(tim_msix_id));
2369 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2370 tim_msix_id[0] = msix_intr_vect;
2371
2372 tim_msix_id[1] = msix_intr_vect + 1;
2373 vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2374
2375 status = vxge_hw_vpath_msix_set(
2376 vdev->vpaths[i].handle,
2377 tim_msix_id, alarm_msix_id);
2378 if (status != VXGE_HW_OK) {
2379 vxge_debug_init(VXGE_ERR,
2380 "vxge_hw_vpath_msix_set "
2381 "failed with status : %x", status);
2382 kfree(vdev->entries);
2383 kfree(vdev->vxge_entries);
2384 pci_disable_msix(vdev->pdev);
2385 return -ENODEV;
2386 }
2387 }
2388 }
2389
2390 return ret;
2391 }
2392
2393 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2394 {
2395 int intr_cnt;
2396
2397 for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2398 intr_cnt++) {
2399 if (vdev->vxge_entries[intr_cnt].in_use) {
2400 synchronize_irq(vdev->entries[intr_cnt].vector);
2401 free_irq(vdev->entries[intr_cnt].vector,
2402 vdev->vxge_entries[intr_cnt].arg);
2403 vdev->vxge_entries[intr_cnt].in_use = 0;
2404 }
2405 }
2406
2407 kfree(vdev->entries);
2408 kfree(vdev->vxge_entries);
2409 vdev->entries = NULL;
2410 vdev->vxge_entries = NULL;
2411
2412 if (vdev->config.intr_type == MSI_X)
2413 pci_disable_msix(vdev->pdev);
2414 }
2415 #endif
2416
2417 static void vxge_rem_isr(struct vxgedev *vdev)
2418 {
2419 struct __vxge_hw_device *hldev;
2420 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2421
2422 #ifdef CONFIG_PCI_MSI
2423 if (vdev->config.intr_type == MSI_X) {
2424 vxge_rem_msix_isr(vdev);
2425 } else
2426 #endif
2427 if (vdev->config.intr_type == INTA) {
2428 synchronize_irq(vdev->pdev->irq);
2429 free_irq(vdev->pdev->irq, vdev);
2430 }
2431 }
2432
2433 static int vxge_add_isr(struct vxgedev *vdev)
2434 {
2435 int ret = 0;
2436 #ifdef CONFIG_PCI_MSI
2437 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2438 u64 function_mode = vdev->config.device_hw_info.function_mode;
2439 int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2440
2441 if (vdev->config.intr_type == MSI_X)
2442 ret = vxge_enable_msix(vdev);
2443
2444 if (ret) {
2445 vxge_debug_init(VXGE_ERR,
2446 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2447 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2448 test_and_set_bit(__VXGE_STATE_CARD_UP,
2449 &driver_config->inta_dev_open))
2450 return VXGE_HW_FAIL;
2451 else {
2452 vxge_debug_init(VXGE_ERR,
2453 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2454 vdev->config.intr_type = INTA;
2455 vxge_hw_device_set_intr_type(vdev->devh,
2456 VXGE_HW_INTR_MODE_IRQLINE);
2457 vxge_close_vpaths(vdev, 1);
2458 vdev->no_of_vpath = 1;
2459 vdev->stats.vpaths_open = 1;
2460 }
2461 }
2462
2463 if (vdev->config.intr_type == MSI_X) {
2464 for (intr_idx = 0;
2465 intr_idx < (vdev->no_of_vpath *
2466 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2467
2468 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2469 irq_req = 0;
2470
2471 switch (msix_idx) {
2472 case 0:
2473 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2474 "%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
2475 vdev->ndev->name, pci_fun, vp_idx,
2476 vdev->entries[intr_cnt].entry);
2477 ret = request_irq(
2478 vdev->entries[intr_cnt].vector,
2479 vxge_tx_msix_handle, 0,
2480 vdev->desc[intr_cnt],
2481 &vdev->vpaths[vp_idx].fifo);
2482 vdev->vxge_entries[intr_cnt].arg =
2483 &vdev->vpaths[vp_idx].fifo;
2484 irq_req = 1;
2485 break;
2486 case 1:
2487 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2488 "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2489 vdev->ndev->name, pci_fun, vp_idx,
2490 vdev->entries[intr_cnt].entry);
2491 ret = request_irq(
2492 vdev->entries[intr_cnt].vector,
2493 vxge_rx_msix_napi_handle,
2494 0,
2495 vdev->desc[intr_cnt],
2496 &vdev->vpaths[vp_idx].ring);
2497 vdev->vxge_entries[intr_cnt].arg =
2498 &vdev->vpaths[vp_idx].ring;
2499 irq_req = 1;
2500 break;
2501 }
2502
2503 if (ret) {
2504 vxge_debug_init(VXGE_ERR,
2505 "%s: MSIX - %d Registration failed",
2506 vdev->ndev->name, intr_cnt);
2507 vxge_rem_msix_isr(vdev);
2508 if ((function_mode ==
2509 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2510 test_and_set_bit(__VXGE_STATE_CARD_UP,
2511 &driver_config->inta_dev_open))
2512 return VXGE_HW_FAIL;
2513 else {
2514 vxge_hw_device_set_intr_type(
2515 vdev->devh,
2516 VXGE_HW_INTR_MODE_IRQLINE);
2517 vdev->config.intr_type = INTA;
2518 vxge_debug_init(VXGE_ERR,
2519 "%s: Defaulting to INTA"
2520 , vdev->ndev->name);
2521 vxge_close_vpaths(vdev, 1);
2522 vdev->no_of_vpath = 1;
2523 vdev->stats.vpaths_open = 1;
2524 goto INTA_MODE;
2525 }
2526 }
2527
2528 if (irq_req) {
2529 /* We requested for this msix interrupt */
2530 vdev->vxge_entries[intr_cnt].in_use = 1;
2531 vxge_hw_vpath_msix_unmask(
2532 vdev->vpaths[vp_idx].handle,
2533 intr_idx);
2534 intr_cnt++;
2535 }
2536
2537 /* Point to next vpath handler */
2538 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
2539 && (vp_idx < (vdev->no_of_vpath - 1)))
2540 vp_idx++;
2541 }
2542
2543 intr_cnt = vdev->max_vpath_supported * 2;
2544 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2545 "%s:vxge Alarm fn: %d MSI-X: %d",
2546 vdev->ndev->name, pci_fun,
2547 vdev->entries[intr_cnt].entry);
2548 /* For Alarm interrupts */
2549 ret = request_irq(vdev->entries[intr_cnt].vector,
2550 vxge_alarm_msix_handle, 0,
2551 vdev->desc[intr_cnt],
2552 &vdev->vpaths[vp_idx]);
2553 if (ret) {
2554 vxge_debug_init(VXGE_ERR,
2555 "%s: MSIX - %d Registration failed",
2556 vdev->ndev->name, intr_cnt);
2557 vxge_rem_msix_isr(vdev);
2558 if ((function_mode ==
2559 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2560 test_and_set_bit(__VXGE_STATE_CARD_UP,
2561 &driver_config->inta_dev_open))
2562 return VXGE_HW_FAIL;
2563 else {
2564 vxge_hw_device_set_intr_type(vdev->devh,
2565 VXGE_HW_INTR_MODE_IRQLINE);
2566 vdev->config.intr_type = INTA;
2567 vxge_debug_init(VXGE_ERR,
2568 "%s: Defaulting to INTA",
2569 vdev->ndev->name);
2570 vxge_close_vpaths(vdev, 1);
2571 vdev->no_of_vpath = 1;
2572 vdev->stats.vpaths_open = 1;
2573 goto INTA_MODE;
2574 }
2575 }
2576
2577 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2578 intr_idx - 2);
2579 vdev->vxge_entries[intr_cnt].in_use = 1;
2580 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2581 }
2582 INTA_MODE:
2583 #endif
2584 snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2585
2586 if (vdev->config.intr_type == INTA) {
2587 ret = request_irq((int) vdev->pdev->irq,
2588 vxge_isr_napi,
2589 IRQF_SHARED, vdev->desc[0], vdev);
2590 if (ret) {
2591 vxge_debug_init(VXGE_ERR,
2592 "%s %s-%d: ISR registration failed",
2593 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2594 return -ENODEV;
2595 }
2596 vxge_debug_init(VXGE_TRACE,
2597 "new %s-%d line allocated",
2598 "IRQ", vdev->pdev->irq);
2599 }
2600
2601 return VXGE_HW_OK;
2602 }
2603
2604 static void vxge_poll_vp_reset(unsigned long data)
2605 {
2606 struct vxgedev *vdev = (struct vxgedev *)data;
2607 int i, j = 0;
2608
2609 for (i = 0; i < vdev->no_of_vpath; i++) {
2610 if (test_bit(i, &vdev->vp_reset)) {
2611 vxge_reset_vpath(vdev, i);
2612 j++;
2613 }
2614 }
2615 if (j && (vdev->config.intr_type != MSI_X)) {
2616 vxge_hw_device_unmask_all(vdev->devh);
2617 vxge_hw_device_flush_io(vdev->devh);
2618 }
2619
2620 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2621 }
2622
2623 static void vxge_poll_vp_lockup(unsigned long data)
2624 {
2625 struct vxgedev *vdev = (struct vxgedev *)data;
2626 int i;
2627 struct vxge_ring *ring;
2628 enum vxge_hw_status status = VXGE_HW_OK;
2629
2630 for (i = 0; i < vdev->no_of_vpath; i++) {
2631 ring = &vdev->vpaths[i].ring;
2632 /* Did this vpath received any packets */
2633 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2634 status = vxge_hw_vpath_check_leak(ring->handle);
2635
2636 /* Did it received any packets last time */
2637 if ((VXGE_HW_FAIL == status) &&
2638 (VXGE_HW_FAIL == ring->last_status)) {
2639
2640 /* schedule vpath reset */
2641 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2642
2643 /* disable interrupts for this vpath */
2644 vxge_vpath_intr_disable(vdev, i);
2645
2646 /* stop the queue for this vpath */
2647 vxge_stop_tx_queue(&vdev->vpaths[i].
2648 fifo);
2649 continue;
2650 }
2651 }
2652 }
2653 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2654 ring->last_status = status;
2655 }
2656
2657 /* Check every 1 milli second */
2658 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2659 }
2660
2661 /**
2662 * vxge_open
2663 * @dev: pointer to the device structure.
2664 *
2665 * This function is the open entry point of the driver. It mainly calls a
2666 * function to allocate Rx buffers and inserts them into the buffer
2667 * descriptors and then enables the Rx part of the NIC.
2668 * Return value: '0' on success and an appropriate (-)ve integer as
2669 * defined in errno.h file on failure.
2670 */
2671 int
2672 vxge_open(struct net_device *dev)
2673 {
2674 enum vxge_hw_status status;
2675 struct vxgedev *vdev;
2676 struct __vxge_hw_device *hldev;
2677 int ret = 0;
2678 int i;
2679 u64 val64, function_mode;
2680 vxge_debug_entryexit(VXGE_TRACE,
2681 "%s: %s:%d", dev->name, __func__, __LINE__);
2682
2683 vdev = (struct vxgedev *)netdev_priv(dev);
2684 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2685 function_mode = vdev->config.device_hw_info.function_mode;
2686
2687 /* make sure you have link off by default every time Nic is
2688 * initialized */
2689 netif_carrier_off(dev);
2690
2691 /* Check for another device already opn with INTA */
2692 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2693 test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
2694 ret = -EPERM;
2695 goto out0;
2696 }
2697
2698 /* Open VPATHs */
2699 status = vxge_open_vpaths(vdev);
2700 if (status != VXGE_HW_OK) {
2701 vxge_debug_init(VXGE_ERR,
2702 "%s: fatal: Vpath open failed", vdev->ndev->name);
2703 ret = -EPERM;
2704 goto out0;
2705 }
2706
2707 vdev->mtu = dev->mtu;
2708
2709 status = vxge_add_isr(vdev);
2710 if (status != VXGE_HW_OK) {
2711 vxge_debug_init(VXGE_ERR,
2712 "%s: fatal: ISR add failed", dev->name);
2713 ret = -EPERM;
2714 goto out1;
2715 }
2716
2717
2718 if (vdev->config.intr_type != MSI_X) {
2719 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2720 vdev->config.napi_weight);
2721 napi_enable(&vdev->napi);
2722 for (i = 0; i < vdev->no_of_vpath; i++)
2723 vdev->vpaths[i].ring.napi_p = &vdev->napi;
2724 } else {
2725 for (i = 0; i < vdev->no_of_vpath; i++) {
2726 netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2727 vxge_poll_msix, vdev->config.napi_weight);
2728 napi_enable(&vdev->vpaths[i].ring.napi);
2729 vdev->vpaths[i].ring.napi_p =
2730 &vdev->vpaths[i].ring.napi;
2731 }
2732 }
2733
2734 /* configure RTH */
2735 if (vdev->config.rth_steering) {
2736 status = vxge_rth_configure(vdev);
2737 if (status != VXGE_HW_OK) {
2738 vxge_debug_init(VXGE_ERR,
2739 "%s: fatal: RTH configuration failed",
2740 dev->name);
2741 ret = -EPERM;
2742 goto out2;
2743 }
2744 }
2745
2746 for (i = 0; i < vdev->no_of_vpath; i++) {
2747 /* set initial mtu before enabling the device */
2748 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2749 vdev->mtu);
2750 if (status != VXGE_HW_OK) {
2751 vxge_debug_init(VXGE_ERR,
2752 "%s: fatal: can not set new MTU", dev->name);
2753 ret = -EPERM;
2754 goto out2;
2755 }
2756 }
2757
2758 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2759 vxge_debug_init(vdev->level_trace,
2760 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2761 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2762
2763 /* Reprogram the DA table with populated mac addresses */
2764 for (i = 0; i < vdev->no_of_vpath; i++) {
2765 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2766 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2767 }
2768
2769 /* Enable vpath to sniff all unicast/multicast traffic that not
2770 * addressed to them. We allow promiscous mode for PF only
2771 */
2772
2773 val64 = 0;
2774 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2775 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2776
2777 vxge_hw_mgmt_reg_write(vdev->devh,
2778 vxge_hw_mgmt_reg_type_mrpcim,
2779 0,
2780 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2781 rxmac_authorize_all_addr),
2782 val64);
2783
2784 vxge_hw_mgmt_reg_write(vdev->devh,
2785 vxge_hw_mgmt_reg_type_mrpcim,
2786 0,
2787 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2788 rxmac_authorize_all_vid),
2789 val64);
2790
2791 vxge_set_multicast(dev);
2792
2793 /* Enabling Bcast and mcast for all vpath */
2794 for (i = 0; i < vdev->no_of_vpath; i++) {
2795 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2796 if (status != VXGE_HW_OK)
2797 vxge_debug_init(VXGE_ERR,
2798 "%s : Can not enable bcast for vpath "
2799 "id %d", dev->name, i);
2800 if (vdev->config.addr_learn_en) {
2801 status =
2802 vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2803 if (status != VXGE_HW_OK)
2804 vxge_debug_init(VXGE_ERR,
2805 "%s : Can not enable mcast for vpath "
2806 "id %d", dev->name, i);
2807 }
2808 }
2809
2810 vxge_hw_device_setpause_data(vdev->devh, 0,
2811 vdev->config.tx_pause_enable,
2812 vdev->config.rx_pause_enable);
2813
2814 if (vdev->vp_reset_timer.function == NULL)
2815 vxge_os_timer(vdev->vp_reset_timer,
2816 vxge_poll_vp_reset, vdev, (HZ/2));
2817
2818 if (vdev->vp_lockup_timer.function == NULL)
2819 vxge_os_timer(vdev->vp_lockup_timer,
2820 vxge_poll_vp_lockup, vdev, (HZ/2));
2821
2822 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2823
2824 smp_wmb();
2825
2826 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2827 netif_carrier_on(vdev->ndev);
2828 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2829 vdev->stats.link_up++;
2830 }
2831
2832 vxge_hw_device_intr_enable(vdev->devh);
2833
2834 smp_wmb();
2835
2836 for (i = 0; i < vdev->no_of_vpath; i++) {
2837 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2838 smp_wmb();
2839 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2840 }
2841
2842 vxge_start_all_tx_queue(vdev);
2843 goto out0;
2844
2845 out2:
2846 vxge_rem_isr(vdev);
2847
2848 /* Disable napi */
2849 if (vdev->config.intr_type != MSI_X)
2850 napi_disable(&vdev->napi);
2851 else {
2852 for (i = 0; i < vdev->no_of_vpath; i++)
2853 napi_disable(&vdev->vpaths[i].ring.napi);
2854 }
2855
2856 out1:
2857 vxge_close_vpaths(vdev, 0);
2858 out0:
2859 vxge_debug_entryexit(VXGE_TRACE,
2860 "%s: %s:%d Exiting...",
2861 dev->name, __func__, __LINE__);
2862 return ret;
2863 }
2864
2865 /* Loop throught the mac address list and delete all the entries */
2866 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2867 {
2868
2869 struct list_head *entry, *next;
2870 if (list_empty(&vpath->mac_addr_list))
2871 return;
2872
2873 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2874 list_del(entry);
2875 kfree((struct vxge_mac_addrs *)entry);
2876 }
2877 }
2878
2879 static void vxge_napi_del_all(struct vxgedev *vdev)
2880 {
2881 int i;
2882 if (vdev->config.intr_type != MSI_X)
2883 netif_napi_del(&vdev->napi);
2884 else {
2885 for (i = 0; i < vdev->no_of_vpath; i++)
2886 netif_napi_del(&vdev->vpaths[i].ring.napi);
2887 }
2888 return;
2889 }
2890
2891 int do_vxge_close(struct net_device *dev, int do_io)
2892 {
2893 enum vxge_hw_status status;
2894 struct vxgedev *vdev;
2895 struct __vxge_hw_device *hldev;
2896 int i;
2897 u64 val64, vpath_vector;
2898 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2899 dev->name, __func__, __LINE__);
2900
2901 vdev = (struct vxgedev *)netdev_priv(dev);
2902 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2903
2904 if (unlikely(!is_vxge_card_up(vdev)))
2905 return 0;
2906
2907 /* If vxge_handle_crit_err task is executing,
2908 * wait till it completes. */
2909 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2910 msleep(50);
2911
2912 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2913 if (do_io) {
2914 /* Put the vpath back in normal mode */
2915 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2916 status = vxge_hw_mgmt_reg_read(vdev->devh,
2917 vxge_hw_mgmt_reg_type_mrpcim,
2918 0,
2919 (ulong)offsetof(
2920 struct vxge_hw_mrpcim_reg,
2921 rts_mgr_cbasin_cfg),
2922 &val64);
2923
2924 if (status == VXGE_HW_OK) {
2925 val64 &= ~vpath_vector;
2926 status = vxge_hw_mgmt_reg_write(vdev->devh,
2927 vxge_hw_mgmt_reg_type_mrpcim,
2928 0,
2929 (ulong)offsetof(
2930 struct vxge_hw_mrpcim_reg,
2931 rts_mgr_cbasin_cfg),
2932 val64);
2933 }
2934
2935 /* Remove the function 0 from promiscous mode */
2936 vxge_hw_mgmt_reg_write(vdev->devh,
2937 vxge_hw_mgmt_reg_type_mrpcim,
2938 0,
2939 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2940 rxmac_authorize_all_addr),
2941 0);
2942
2943 vxge_hw_mgmt_reg_write(vdev->devh,
2944 vxge_hw_mgmt_reg_type_mrpcim,
2945 0,
2946 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2947 rxmac_authorize_all_vid),
2948 0);
2949
2950 smp_wmb();
2951 }
2952 del_timer_sync(&vdev->vp_lockup_timer);
2953
2954 del_timer_sync(&vdev->vp_reset_timer);
2955
2956 /* Disable napi */
2957 if (vdev->config.intr_type != MSI_X)
2958 napi_disable(&vdev->napi);
2959 else {
2960 for (i = 0; i < vdev->no_of_vpath; i++)
2961 napi_disable(&vdev->vpaths[i].ring.napi);
2962 }
2963
2964 netif_carrier_off(vdev->ndev);
2965 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2966 vxge_stop_all_tx_queue(vdev);
2967
2968 /* Note that at this point xmit() is stopped by upper layer */
2969 if (do_io)
2970 vxge_hw_device_intr_disable(vdev->devh);
2971
2972 mdelay(1000);
2973
2974 vxge_rem_isr(vdev);
2975
2976 vxge_napi_del_all(vdev);
2977
2978 if (do_io)
2979 vxge_reset_all_vpaths(vdev);
2980
2981 vxge_close_vpaths(vdev, 0);
2982
2983 vxge_debug_entryexit(VXGE_TRACE,
2984 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
2985
2986 clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
2987 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2988
2989 return 0;
2990 }
2991
2992 /**
2993 * vxge_close
2994 * @dev: device pointer.
2995 *
2996 * This is the stop entry point of the driver. It needs to undo exactly
2997 * whatever was done by the open entry point, thus it's usually referred to
2998 * as the close function.Among other things this function mainly stops the
2999 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3000 * Return value: '0' on success and an appropriate (-)ve integer as
3001 * defined in errno.h file on failure.
3002 */
3003 int
3004 vxge_close(struct net_device *dev)
3005 {
3006 do_vxge_close(dev, 1);
3007 return 0;
3008 }
3009
3010 /**
3011 * vxge_change_mtu
3012 * @dev: net device pointer.
3013 * @new_mtu :the new MTU size for the device.
3014 *
3015 * A driver entry point to change MTU size for the device. Before changing
3016 * the MTU the device must be stopped.
3017 */
3018 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3019 {
3020 struct vxgedev *vdev = netdev_priv(dev);
3021
3022 vxge_debug_entryexit(vdev->level_trace,
3023 "%s:%d", __func__, __LINE__);
3024 if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3025 vxge_debug_init(vdev->level_err,
3026 "%s: mtu size is invalid", dev->name);
3027 return -EPERM;
3028 }
3029
3030 /* check if device is down already */
3031 if (unlikely(!is_vxge_card_up(vdev))) {
3032 /* just store new value, will use later on open() */
3033 dev->mtu = new_mtu;
3034 vxge_debug_init(vdev->level_err,
3035 "%s", "device is down on MTU change");
3036 return 0;
3037 }
3038
3039 vxge_debug_init(vdev->level_trace,
3040 "trying to apply new MTU %d", new_mtu);
3041
3042 if (vxge_close(dev))
3043 return -EIO;
3044
3045 dev->mtu = new_mtu;
3046 vdev->mtu = new_mtu;
3047
3048 if (vxge_open(dev))
3049 return -EIO;
3050
3051 vxge_debug_init(vdev->level_trace,
3052 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3053
3054 vxge_debug_entryexit(vdev->level_trace,
3055 "%s:%d Exiting...", __func__, __LINE__);
3056
3057 return 0;
3058 }
3059
3060 /**
3061 * vxge_get_stats
3062 * @dev: pointer to the device structure
3063 *
3064 * Updates the device statistics structure. This function updates the device
3065 * statistics structure in the net_device structure and returns a pointer
3066 * to the same.
3067 */
3068 static struct net_device_stats *
3069 vxge_get_stats(struct net_device *dev)
3070 {
3071 struct vxgedev *vdev;
3072 struct net_device_stats *net_stats;
3073 int k;
3074
3075 vdev = netdev_priv(dev);
3076
3077 net_stats = &vdev->stats.net_stats;
3078
3079 memset(net_stats, 0, sizeof(struct net_device_stats));
3080
3081 for (k = 0; k < vdev->no_of_vpath; k++) {
3082 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3083 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3084 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3085 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3086 net_stats->rx_dropped +=
3087 vdev->vpaths[k].ring.stats.rx_dropped;
3088
3089 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3090 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3091 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3092 }
3093
3094 return net_stats;
3095 }
3096
3097 /**
3098 * vxge_ioctl
3099 * @dev: Device pointer.
3100 * @ifr: An IOCTL specific structure, that can contain a pointer to
3101 * a proprietary structure used to pass information to the driver.
3102 * @cmd: This is used to distinguish between the different commands that
3103 * can be passed to the IOCTL functions.
3104 *
3105 * Entry point for the Ioctl.
3106 */
3107 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3108 {
3109 return -EOPNOTSUPP;
3110 }
3111
3112 /**
3113 * vxge_tx_watchdog
3114 * @dev: pointer to net device structure
3115 *
3116 * Watchdog for transmit side.
3117 * This function is triggered if the Tx Queue is stopped
3118 * for a pre-defined amount of time when the Interface is still up.
3119 */
3120 static void
3121 vxge_tx_watchdog(struct net_device *dev)
3122 {
3123 struct vxgedev *vdev;
3124
3125 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3126
3127 vdev = (struct vxgedev *)netdev_priv(dev);
3128
3129 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3130
3131 vxge_reset(vdev);
3132 vxge_debug_entryexit(VXGE_TRACE,
3133 "%s:%d Exiting...", __func__, __LINE__);
3134 }
3135
3136 /**
3137 * vxge_vlan_rx_register
3138 * @dev: net device pointer.
3139 * @grp: vlan group
3140 *
3141 * Vlan group registration
3142 */
3143 static void
3144 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3145 {
3146 struct vxgedev *vdev;
3147 struct vxge_vpath *vpath;
3148 int vp;
3149 u64 vid;
3150 enum vxge_hw_status status;
3151 int i;
3152
3153 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3154
3155 vdev = (struct vxgedev *)netdev_priv(dev);
3156
3157 vpath = &vdev->vpaths[0];
3158 if ((NULL == grp) && (vpath->is_open)) {
3159 /* Get the first vlan */
3160 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3161
3162 while (status == VXGE_HW_OK) {
3163
3164 /* Delete this vlan from the vid table */
3165 for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3166 vpath = &vdev->vpaths[vp];
3167 if (!vpath->is_open)
3168 continue;
3169
3170 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3171 }
3172
3173 /* Get the next vlan to be deleted */
3174 vpath = &vdev->vpaths[0];
3175 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3176 }
3177 }
3178
3179 vdev->vlgrp = grp;
3180
3181 for (i = 0; i < vdev->no_of_vpath; i++) {
3182 if (vdev->vpaths[i].is_configured)
3183 vdev->vpaths[i].ring.vlgrp = grp;
3184 }
3185
3186 vxge_debug_entryexit(VXGE_TRACE,
3187 "%s:%d Exiting...", __func__, __LINE__);
3188 }
3189
3190 /**
3191 * vxge_vlan_rx_add_vid
3192 * @dev: net device pointer.
3193 * @vid: vid
3194 *
3195 * Add the vlan id to the devices vlan id table
3196 */
3197 static void
3198 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3199 {
3200 struct vxgedev *vdev;
3201 struct vxge_vpath *vpath;
3202 int vp_id;
3203
3204 vdev = (struct vxgedev *)netdev_priv(dev);
3205
3206 /* Add these vlan to the vid table */
3207 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3208 vpath = &vdev->vpaths[vp_id];
3209 if (!vpath->is_open)
3210 continue;
3211 vxge_hw_vpath_vid_add(vpath->handle, vid);
3212 }
3213 }
3214
3215 /**
3216 * vxge_vlan_rx_add_vid
3217 * @dev: net device pointer.
3218 * @vid: vid
3219 *
3220 * Remove the vlan id from the device's vlan id table
3221 */
3222 static void
3223 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3224 {
3225 struct vxgedev *vdev;
3226 struct vxge_vpath *vpath;
3227 int vp_id;
3228
3229 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3230
3231 vdev = (struct vxgedev *)netdev_priv(dev);
3232
3233 vlan_group_set_device(vdev->vlgrp, vid, NULL);
3234
3235 /* Delete this vlan from the vid table */
3236 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3237 vpath = &vdev->vpaths[vp_id];
3238 if (!vpath->is_open)
3239 continue;
3240 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3241 }
3242 vxge_debug_entryexit(VXGE_TRACE,
3243 "%s:%d Exiting...", __func__, __LINE__);
3244 }
3245
3246 static const struct net_device_ops vxge_netdev_ops = {
3247 .ndo_open = vxge_open,
3248 .ndo_stop = vxge_close,
3249 .ndo_get_stats = vxge_get_stats,
3250 .ndo_start_xmit = vxge_xmit,
3251 .ndo_validate_addr = eth_validate_addr,
3252 .ndo_set_multicast_list = vxge_set_multicast,
3253
3254 .ndo_do_ioctl = vxge_ioctl,
3255
3256 .ndo_set_mac_address = vxge_set_mac_addr,
3257 .ndo_change_mtu = vxge_change_mtu,
3258 .ndo_vlan_rx_register = vxge_vlan_rx_register,
3259 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3260 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3261
3262 .ndo_tx_timeout = vxge_tx_watchdog,
3263 #ifdef CONFIG_NET_POLL_CONTROLLER
3264 .ndo_poll_controller = vxge_netpoll,
3265 #endif
3266 };
3267
3268 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3269 struct vxge_config *config,
3270 int high_dma, int no_of_vpath,
3271 struct vxgedev **vdev_out)
3272 {
3273 struct net_device *ndev;
3274 enum vxge_hw_status status = VXGE_HW_OK;
3275 struct vxgedev *vdev;
3276 int i, ret = 0, no_of_queue = 1;
3277 u64 stat;
3278
3279 *vdev_out = NULL;
3280 if (config->tx_steering_type == TX_MULTIQ_STEERING)
3281 no_of_queue = no_of_vpath;
3282
3283 ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3284 no_of_queue);
3285 if (ndev == NULL) {
3286 vxge_debug_init(
3287 vxge_hw_device_trace_level_get(hldev),
3288 "%s : device allocation failed", __func__);
3289 ret = -ENODEV;
3290 goto _out0;
3291 }
3292
3293 vxge_debug_entryexit(
3294 vxge_hw_device_trace_level_get(hldev),
3295 "%s: %s:%d Entering...",
3296 ndev->name, __func__, __LINE__);
3297
3298 vdev = netdev_priv(ndev);
3299 memset(vdev, 0, sizeof(struct vxgedev));
3300
3301 vdev->ndev = ndev;
3302 vdev->devh = hldev;
3303 vdev->pdev = hldev->pdev;
3304 memcpy(&vdev->config, config, sizeof(struct vxge_config));
3305 vdev->rx_csum = 1; /* Enable Rx CSUM by default. */
3306
3307 SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3308
3309 ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3310 NETIF_F_HW_VLAN_FILTER;
3311 /* Driver entry points */
3312 ndev->irq = vdev->pdev->irq;
3313 ndev->base_addr = (unsigned long) hldev->bar0;
3314
3315 ndev->netdev_ops = &vxge_netdev_ops;
3316
3317 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3318
3319 initialize_ethtool_ops(ndev);
3320
3321 /* Allocate memory for vpath */
3322 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3323 no_of_vpath, GFP_KERNEL);
3324 if (!vdev->vpaths) {
3325 vxge_debug_init(VXGE_ERR,
3326 "%s: vpath memory allocation failed",
3327 vdev->ndev->name);
3328 ret = -ENODEV;
3329 goto _out1;
3330 }
3331
3332 ndev->features |= NETIF_F_SG;
3333
3334 ndev->features |= NETIF_F_HW_CSUM;
3335 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3336 "%s : checksuming enabled", __func__);
3337
3338 if (high_dma) {
3339 ndev->features |= NETIF_F_HIGHDMA;
3340 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3341 "%s : using High DMA", __func__);
3342 }
3343
3344 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3345
3346 if (vdev->config.gro_enable)
3347 ndev->features |= NETIF_F_GRO;
3348
3349 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3350 ndev->real_num_tx_queues = no_of_vpath;
3351
3352 #ifdef NETIF_F_LLTX
3353 ndev->features |= NETIF_F_LLTX;
3354 #endif
3355
3356 for (i = 0; i < no_of_vpath; i++)
3357 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3358
3359 if (register_netdev(ndev)) {
3360 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3361 "%s: %s : device registration failed!",
3362 ndev->name, __func__);
3363 ret = -ENODEV;
3364 goto _out2;
3365 }
3366
3367 /* Set the factory defined MAC address initially */
3368 ndev->addr_len = ETH_ALEN;
3369
3370 /* Make Link state as off at this point, when the Link change
3371 * interrupt comes the state will be automatically changed to
3372 * the right state.
3373 */
3374 netif_carrier_off(ndev);
3375
3376 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3377 "%s: Ethernet device registered",
3378 ndev->name);
3379
3380 *vdev_out = vdev;
3381
3382 /* Resetting the Device stats */
3383 status = vxge_hw_mrpcim_stats_access(
3384 hldev,
3385 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3386 0,
3387 0,
3388 &stat);
3389
3390 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3391 vxge_debug_init(
3392 vxge_hw_device_trace_level_get(hldev),
3393 "%s: device stats clear returns"
3394 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3395
3396 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3397 "%s: %s:%d Exiting...",
3398 ndev->name, __func__, __LINE__);
3399
3400 return ret;
3401 _out2:
3402 kfree(vdev->vpaths);
3403 _out1:
3404 free_netdev(ndev);
3405 _out0:
3406 return ret;
3407 }
3408
3409 /*
3410 * vxge_device_unregister
3411 *
3412 * This function will unregister and free network device
3413 */
3414 void
3415 vxge_device_unregister(struct __vxge_hw_device *hldev)
3416 {
3417 struct vxgedev *vdev;
3418 struct net_device *dev;
3419 char buf[IFNAMSIZ];
3420 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3421 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3422 u32 level_trace;
3423 #endif
3424
3425 dev = hldev->ndev;
3426 vdev = netdev_priv(dev);
3427 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3428 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3429 level_trace = vdev->level_trace;
3430 #endif
3431 vxge_debug_entryexit(level_trace,
3432 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3433
3434 memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3435
3436 /* in 2.6 will call stop() if device is up */
3437 unregister_netdev(dev);
3438
3439 flush_scheduled_work();
3440
3441 vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3442 vxge_debug_entryexit(level_trace,
3443 "%s: %s:%d Exiting...", buf, __func__, __LINE__);
3444 }
3445
3446 /*
3447 * vxge_callback_crit_err
3448 *
3449 * This function is called by the alarm handler in interrupt context.
3450 * Driver must analyze it based on the event type.
3451 */
3452 static void
3453 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3454 enum vxge_hw_event type, u64 vp_id)
3455 {
3456 struct net_device *dev = hldev->ndev;
3457 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3458 int vpath_idx;
3459
3460 vxge_debug_entryexit(vdev->level_trace,
3461 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3462
3463 /* Note: This event type should be used for device wide
3464 * indications only - Serious errors, Slot freeze and critical errors
3465 */
3466 vdev->cric_err_event = type;
3467
3468 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3469 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3470 break;
3471
3472 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3473 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3474 vxge_debug_init(VXGE_ERR,
3475 "%s: Slot is frozen", vdev->ndev->name);
3476 } else if (type == VXGE_HW_EVENT_SERR) {
3477 vxge_debug_init(VXGE_ERR,
3478 "%s: Encountered Serious Error",
3479 vdev->ndev->name);
3480 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3481 vxge_debug_init(VXGE_ERR,
3482 "%s: Encountered Critical Error",
3483 vdev->ndev->name);
3484 }
3485
3486 if ((type == VXGE_HW_EVENT_SERR) ||
3487 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3488 if (unlikely(vdev->exec_mode))
3489 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3490 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3491 vxge_hw_device_mask_all(hldev);
3492 if (unlikely(vdev->exec_mode))
3493 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3494 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3495 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3496
3497 if (unlikely(vdev->exec_mode))
3498 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3499 else {
3500 /* check if this vpath is already set for reset */
3501 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3502
3503 /* disable interrupts for this vpath */
3504 vxge_vpath_intr_disable(vdev, vpath_idx);
3505
3506 /* stop the queue for this vpath */
3507 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3508 fifo);
3509 }
3510 }
3511 }
3512
3513 vxge_debug_entryexit(vdev->level_trace,
3514 "%s: %s:%d Exiting...",
3515 vdev->ndev->name, __func__, __LINE__);
3516 }
3517
3518 static void verify_bandwidth(void)
3519 {
3520 int i, band_width, total = 0, equal_priority = 0;
3521
3522 /* 1. If user enters 0 for some fifo, give equal priority to all */
3523 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3524 if (bw_percentage[i] == 0) {
3525 equal_priority = 1;
3526 break;
3527 }
3528 }
3529
3530 if (!equal_priority) {
3531 /* 2. If sum exceeds 100, give equal priority to all */
3532 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3533 if (bw_percentage[i] == 0xFF)
3534 break;
3535
3536 total += bw_percentage[i];
3537 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3538 equal_priority = 1;
3539 break;
3540 }
3541 }
3542 }
3543
3544 if (!equal_priority) {
3545 /* Is all the bandwidth consumed? */
3546 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3547 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3548 /* Split rest of bw equally among next VPs*/
3549 band_width =
3550 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3551 (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3552 if (band_width < 2) /* min of 2% */
3553 equal_priority = 1;
3554 else {
3555 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3556 i++)
3557 bw_percentage[i] =
3558 band_width;
3559 }
3560 }
3561 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3562 equal_priority = 1;
3563 }
3564
3565 if (equal_priority) {
3566 vxge_debug_init(VXGE_ERR,
3567 "%s: Assigning equal bandwidth to all the vpaths",
3568 VXGE_DRIVER_NAME);
3569 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3570 VXGE_HW_MAX_VIRTUAL_PATHS;
3571 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3572 bw_percentage[i] = bw_percentage[0];
3573 }
3574
3575 return;
3576 }
3577
3578 /*
3579 * Vpath configuration
3580 */
3581 static int __devinit vxge_config_vpaths(
3582 struct vxge_hw_device_config *device_config,
3583 u64 vpath_mask, struct vxge_config *config_param)
3584 {
3585 int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3586 u32 txdl_size, txdl_per_memblock;
3587
3588 temp = driver_config->vpath_per_dev;
3589 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3590 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3591 /* No more CPU. Return vpath number as zero.*/
3592 if (driver_config->g_no_cpus == -1)
3593 return 0;
3594
3595 if (!driver_config->g_no_cpus)
3596 driver_config->g_no_cpus = num_online_cpus();
3597
3598 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3599 if (!driver_config->vpath_per_dev)
3600 driver_config->vpath_per_dev = 1;
3601
3602 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3603 if (!vxge_bVALn(vpath_mask, i, 1))
3604 continue;
3605 else
3606 default_no_vpath++;
3607 if (default_no_vpath < driver_config->vpath_per_dev)
3608 driver_config->vpath_per_dev = default_no_vpath;
3609
3610 driver_config->g_no_cpus = driver_config->g_no_cpus -
3611 (driver_config->vpath_per_dev * 2);
3612 if (driver_config->g_no_cpus <= 0)
3613 driver_config->g_no_cpus = -1;
3614 }
3615
3616 if (driver_config->vpath_per_dev == 1) {
3617 vxge_debug_ll_config(VXGE_TRACE,
3618 "%s: Disable tx and rx steering, "
3619 "as single vpath is configured", VXGE_DRIVER_NAME);
3620 config_param->rth_steering = NO_STEERING;
3621 config_param->tx_steering_type = NO_STEERING;
3622 device_config->rth_en = 0;
3623 }
3624
3625 /* configure bandwidth */
3626 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3627 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3628
3629 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3630 device_config->vp_config[i].vp_id = i;
3631 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3632 if (no_of_vpaths < driver_config->vpath_per_dev) {
3633 if (!vxge_bVALn(vpath_mask, i, 1)) {
3634 vxge_debug_ll_config(VXGE_TRACE,
3635 "%s: vpath: %d is not available",
3636 VXGE_DRIVER_NAME, i);
3637 continue;
3638 } else {
3639 vxge_debug_ll_config(VXGE_TRACE,
3640 "%s: vpath: %d available",
3641 VXGE_DRIVER_NAME, i);
3642 no_of_vpaths++;
3643 }
3644 } else {
3645 vxge_debug_ll_config(VXGE_TRACE,
3646 "%s: vpath: %d is not configured, "
3647 "max_config_vpath exceeded",
3648 VXGE_DRIVER_NAME, i);
3649 break;
3650 }
3651
3652 /* Configure Tx fifo's */
3653 device_config->vp_config[i].fifo.enable =
3654 VXGE_HW_FIFO_ENABLE;
3655 device_config->vp_config[i].fifo.max_frags =
3656 MAX_SKB_FRAGS;
3657 device_config->vp_config[i].fifo.memblock_size =
3658 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3659
3660 txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
3661 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3662
3663 device_config->vp_config[i].fifo.fifo_blocks =
3664 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3665
3666 device_config->vp_config[i].fifo.intr =
3667 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3668
3669 /* Configure tti properties */
3670 device_config->vp_config[i].tti.intr_enable =
3671 VXGE_HW_TIM_INTR_ENABLE;
3672
3673 device_config->vp_config[i].tti.btimer_val =
3674 (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3675
3676 device_config->vp_config[i].tti.timer_ac_en =
3677 VXGE_HW_TIM_TIMER_AC_ENABLE;
3678
3679 /* For msi-x with napi (each vector
3680 has a handler of its own) -
3681 Set CI to OFF for all vpaths */
3682 device_config->vp_config[i].tti.timer_ci_en =
3683 VXGE_HW_TIM_TIMER_CI_DISABLE;
3684
3685 device_config->vp_config[i].tti.timer_ri_en =
3686 VXGE_HW_TIM_TIMER_RI_DISABLE;
3687
3688 device_config->vp_config[i].tti.util_sel =
3689 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3690
3691 device_config->vp_config[i].tti.ltimer_val =
3692 (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3693
3694 device_config->vp_config[i].tti.rtimer_val =
3695 (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3696
3697 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3698 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3699 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3700 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3701 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3702 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3703 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3704
3705 /* Configure Rx rings */
3706 device_config->vp_config[i].ring.enable =
3707 VXGE_HW_RING_ENABLE;
3708
3709 device_config->vp_config[i].ring.ring_blocks =
3710 VXGE_HW_DEF_RING_BLOCKS;
3711 device_config->vp_config[i].ring.buffer_mode =
3712 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3713 device_config->vp_config[i].ring.rxds_limit =
3714 VXGE_HW_DEF_RING_RXDS_LIMIT;
3715 device_config->vp_config[i].ring.scatter_mode =
3716 VXGE_HW_RING_SCATTER_MODE_A;
3717
3718 /* Configure rti properties */
3719 device_config->vp_config[i].rti.intr_enable =
3720 VXGE_HW_TIM_INTR_ENABLE;
3721
3722 device_config->vp_config[i].rti.btimer_val =
3723 (VXGE_RTI_BTIMER_VAL * 1000)/272;
3724
3725 device_config->vp_config[i].rti.timer_ac_en =
3726 VXGE_HW_TIM_TIMER_AC_ENABLE;
3727
3728 device_config->vp_config[i].rti.timer_ci_en =
3729 VXGE_HW_TIM_TIMER_CI_DISABLE;
3730
3731 device_config->vp_config[i].rti.timer_ri_en =
3732 VXGE_HW_TIM_TIMER_RI_DISABLE;
3733
3734 device_config->vp_config[i].rti.util_sel =
3735 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3736
3737 device_config->vp_config[i].rti.urange_a =
3738 RTI_RX_URANGE_A;
3739 device_config->vp_config[i].rti.urange_b =
3740 RTI_RX_URANGE_B;
3741 device_config->vp_config[i].rti.urange_c =
3742 RTI_RX_URANGE_C;
3743 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3744 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3745 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3746 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3747
3748 device_config->vp_config[i].rti.rtimer_val =
3749 (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3750
3751 device_config->vp_config[i].rti.ltimer_val =
3752 (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3753
3754 device_config->vp_config[i].rpa_strip_vlan_tag =
3755 vlan_tag_strip;
3756 }
3757
3758 driver_config->vpath_per_dev = temp;
3759 return no_of_vpaths;
3760 }
3761
3762 /* initialize device configuratrions */
3763 static void __devinit vxge_device_config_init(
3764 struct vxge_hw_device_config *device_config,
3765 int *intr_type)
3766 {
3767 /* Used for CQRQ/SRQ. */
3768 device_config->dma_blockpool_initial =
3769 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3770
3771 device_config->dma_blockpool_max =
3772 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3773
3774 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3775 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3776
3777 #ifndef CONFIG_PCI_MSI
3778 vxge_debug_init(VXGE_ERR,
3779 "%s: This Kernel does not support "
3780 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3781 *intr_type = INTA;
3782 #endif
3783
3784 /* Configure whether MSI-X or IRQL. */
3785 switch (*intr_type) {
3786 case INTA:
3787 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3788 break;
3789
3790 case MSI_X:
3791 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3792 break;
3793 }
3794 /* Timer period between device poll */
3795 device_config->device_poll_millis = VXGE_TIMER_DELAY;
3796
3797 /* Configure mac based steering. */
3798 device_config->rts_mac_en = addr_learn_en;
3799
3800 /* Configure Vpaths */
3801 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3802
3803 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3804 __func__);
3805 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3806 device_config->dma_blockpool_initial);
3807 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3808 device_config->dma_blockpool_max);
3809 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3810 device_config->intr_mode);
3811 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3812 device_config->device_poll_millis);
3813 vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3814 device_config->rts_mac_en);
3815 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3816 device_config->rth_en);
3817 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3818 device_config->rth_it_type);
3819 }
3820
3821 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3822 {
3823 int i;
3824
3825 vxge_debug_init(VXGE_TRACE,
3826 "%s: %d Vpath(s) opened",
3827 vdev->ndev->name, vdev->no_of_vpath);
3828
3829 switch (vdev->config.intr_type) {
3830 case INTA:
3831 vxge_debug_init(VXGE_TRACE,
3832 "%s: Interrupt type INTA", vdev->ndev->name);
3833 break;
3834
3835 case MSI_X:
3836 vxge_debug_init(VXGE_TRACE,
3837 "%s: Interrupt type MSI-X", vdev->ndev->name);
3838 break;
3839 }
3840
3841 if (vdev->config.rth_steering) {
3842 vxge_debug_init(VXGE_TRACE,
3843 "%s: RTH steering enabled for TCP_IPV4",
3844 vdev->ndev->name);
3845 } else {
3846 vxge_debug_init(VXGE_TRACE,
3847 "%s: RTH steering disabled", vdev->ndev->name);
3848 }
3849
3850 switch (vdev->config.tx_steering_type) {
3851 case NO_STEERING:
3852 vxge_debug_init(VXGE_TRACE,
3853 "%s: Tx steering disabled", vdev->ndev->name);
3854 break;
3855 case TX_PRIORITY_STEERING:
3856 vxge_debug_init(VXGE_TRACE,
3857 "%s: Unsupported tx steering option",
3858 vdev->ndev->name);
3859 vxge_debug_init(VXGE_TRACE,
3860 "%s: Tx steering disabled", vdev->ndev->name);
3861 vdev->config.tx_steering_type = 0;
3862 break;
3863 case TX_VLAN_STEERING:
3864 vxge_debug_init(VXGE_TRACE,
3865 "%s: Unsupported tx steering option",
3866 vdev->ndev->name);
3867 vxge_debug_init(VXGE_TRACE,
3868 "%s: Tx steering disabled", vdev->ndev->name);
3869 vdev->config.tx_steering_type = 0;
3870 break;
3871 case TX_MULTIQ_STEERING:
3872 vxge_debug_init(VXGE_TRACE,
3873 "%s: Tx multiqueue steering enabled",
3874 vdev->ndev->name);
3875 break;
3876 case TX_PORT_STEERING:
3877 vxge_debug_init(VXGE_TRACE,
3878 "%s: Tx port steering enabled",
3879 vdev->ndev->name);
3880 break;
3881 default:
3882 vxge_debug_init(VXGE_ERR,
3883 "%s: Unsupported tx steering type",
3884 vdev->ndev->name);
3885 vxge_debug_init(VXGE_TRACE,
3886 "%s: Tx steering disabled", vdev->ndev->name);
3887 vdev->config.tx_steering_type = 0;
3888 }
3889
3890 if (vdev->config.gro_enable) {
3891 vxge_debug_init(VXGE_ERR,
3892 "%s: Generic receive offload enabled",
3893 vdev->ndev->name);
3894 } else
3895 vxge_debug_init(VXGE_TRACE,
3896 "%s: Generic receive offload disabled",
3897 vdev->ndev->name);
3898
3899 if (vdev->config.addr_learn_en)
3900 vxge_debug_init(VXGE_TRACE,
3901 "%s: MAC Address learning enabled", vdev->ndev->name);
3902
3903 vxge_debug_init(VXGE_TRACE,
3904 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3905
3906 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3907 if (!vxge_bVALn(vpath_mask, i, 1))
3908 continue;
3909 vxge_debug_ll_config(VXGE_TRACE,
3910 "%s: MTU size - %d", vdev->ndev->name,
3911 ((struct __vxge_hw_device *)(vdev->devh))->
3912 config.vp_config[i].mtu);
3913 vxge_debug_init(VXGE_TRACE,
3914 "%s: VLAN tag stripping %s", vdev->ndev->name,
3915 ((struct __vxge_hw_device *)(vdev->devh))->
3916 config.vp_config[i].rpa_strip_vlan_tag
3917 ? "Enabled" : "Disabled");
3918 vxge_debug_init(VXGE_TRACE,
3919 "%s: Ring blocks : %d", vdev->ndev->name,
3920 ((struct __vxge_hw_device *)(vdev->devh))->
3921 config.vp_config[i].ring.ring_blocks);
3922 vxge_debug_init(VXGE_TRACE,
3923 "%s: Fifo blocks : %d", vdev->ndev->name,
3924 ((struct __vxge_hw_device *)(vdev->devh))->
3925 config.vp_config[i].fifo.fifo_blocks);
3926 vxge_debug_ll_config(VXGE_TRACE,
3927 "%s: Max frags : %d", vdev->ndev->name,
3928 ((struct __vxge_hw_device *)(vdev->devh))->
3929 config.vp_config[i].fifo.max_frags);
3930 break;
3931 }
3932 }
3933
3934 #ifdef CONFIG_PM
3935 /**
3936 * vxge_pm_suspend - vxge power management suspend entry point
3937 *
3938 */
3939 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3940 {
3941 return -ENOSYS;
3942 }
3943 /**
3944 * vxge_pm_resume - vxge power management resume entry point
3945 *
3946 */
3947 static int vxge_pm_resume(struct pci_dev *pdev)
3948 {
3949 return -ENOSYS;
3950 }
3951
3952 #endif
3953
3954 /**
3955 * vxge_io_error_detected - called when PCI error is detected
3956 * @pdev: Pointer to PCI device
3957 * @state: The current pci connection state
3958 *
3959 * This function is called after a PCI bus error affecting
3960 * this device has been detected.
3961 */
3962 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3963 pci_channel_state_t state)
3964 {
3965 struct __vxge_hw_device *hldev =
3966 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3967 struct net_device *netdev = hldev->ndev;
3968
3969 netif_device_detach(netdev);
3970
3971 if (state == pci_channel_io_perm_failure)
3972 return PCI_ERS_RESULT_DISCONNECT;
3973
3974 if (netif_running(netdev)) {
3975 /* Bring down the card, while avoiding PCI I/O */
3976 do_vxge_close(netdev, 0);
3977 }
3978
3979 pci_disable_device(pdev);
3980
3981 return PCI_ERS_RESULT_NEED_RESET;
3982 }
3983
3984 /**
3985 * vxge_io_slot_reset - called after the pci bus has been reset.
3986 * @pdev: Pointer to PCI device
3987 *
3988 * Restart the card from scratch, as if from a cold-boot.
3989 * At this point, the card has exprienced a hard reset,
3990 * followed by fixups by BIOS, and has its config space
3991 * set up identically to what it was at cold boot.
3992 */
3993 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3994 {
3995 struct __vxge_hw_device *hldev =
3996 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3997 struct net_device *netdev = hldev->ndev;
3998
3999 struct vxgedev *vdev = netdev_priv(netdev);
4000
4001 if (pci_enable_device(pdev)) {
4002 printk(KERN_ERR "%s: "
4003 "Cannot re-enable device after reset\n",
4004 VXGE_DRIVER_NAME);
4005 return PCI_ERS_RESULT_DISCONNECT;
4006 }
4007
4008 pci_set_master(pdev);
4009 vxge_reset(vdev);
4010
4011 return PCI_ERS_RESULT_RECOVERED;
4012 }
4013
4014 /**
4015 * vxge_io_resume - called when traffic can start flowing again.
4016 * @pdev: Pointer to PCI device
4017 *
4018 * This callback is called when the error recovery driver tells
4019 * us that its OK to resume normal operation.
4020 */
4021 static void vxge_io_resume(struct pci_dev *pdev)
4022 {
4023 struct __vxge_hw_device *hldev =
4024 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4025 struct net_device *netdev = hldev->ndev;
4026
4027 if (netif_running(netdev)) {
4028 if (vxge_open(netdev)) {
4029 printk(KERN_ERR "%s: "
4030 "Can't bring device back up after reset\n",
4031 VXGE_DRIVER_NAME);
4032 return;
4033 }
4034 }
4035
4036 netif_device_attach(netdev);
4037 }
4038
4039 /**
4040 * vxge_probe
4041 * @pdev : structure containing the PCI related information of the device.
4042 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4043 * Description:
4044 * This function is called when a new PCI device gets detected and initializes
4045 * it.
4046 * Return value:
4047 * returns 0 on success and negative on failure.
4048 *
4049 */
4050 static int __devinit
4051 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4052 {
4053 struct __vxge_hw_device *hldev;
4054 enum vxge_hw_status status;
4055 int ret;
4056 int high_dma = 0;
4057 u64 vpath_mask = 0;
4058 struct vxgedev *vdev;
4059 struct vxge_config ll_config;
4060 struct vxge_hw_device_config *device_config = NULL;
4061 struct vxge_hw_device_attr attr;
4062 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4063 u8 *macaddr;
4064 struct vxge_mac_addrs *entry;
4065 static int bus = -1, device = -1;
4066 u8 new_device = 0;
4067
4068 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4069 attr.pdev = pdev;
4070
4071 if (bus != pdev->bus->number)
4072 new_device = 1;
4073 if (device != PCI_SLOT(pdev->devfn))
4074 new_device = 1;
4075
4076 bus = pdev->bus->number;
4077 device = PCI_SLOT(pdev->devfn);
4078
4079 if (new_device) {
4080 if (driver_config->config_dev_cnt &&
4081 (driver_config->config_dev_cnt !=
4082 driver_config->total_dev_cnt))
4083 vxge_debug_init(VXGE_ERR,
4084 "%s: Configured %d of %d devices",
4085 VXGE_DRIVER_NAME,
4086 driver_config->config_dev_cnt,
4087 driver_config->total_dev_cnt);
4088 driver_config->config_dev_cnt = 0;
4089 driver_config->total_dev_cnt = 0;
4090 driver_config->g_no_cpus = 0;
4091 driver_config->vpath_per_dev = max_config_vpath;
4092 }
4093
4094 driver_config->total_dev_cnt++;
4095 if (++driver_config->config_dev_cnt > max_config_dev) {
4096 ret = 0;
4097 goto _exit0;
4098 }
4099
4100 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4101 GFP_KERNEL);
4102 if (!device_config) {
4103 ret = -ENOMEM;
4104 vxge_debug_init(VXGE_ERR,
4105 "device_config : malloc failed %s %d",
4106 __FILE__, __LINE__);
4107 goto _exit0;
4108 }
4109
4110 memset(&ll_config, 0, sizeof(struct vxge_config));
4111 ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4112 ll_config.intr_type = MSI_X;
4113 ll_config.napi_weight = NEW_NAPI_WEIGHT;
4114 ll_config.rth_steering = RTH_STEERING;
4115
4116 /* get the default configuration parameters */
4117 vxge_hw_device_config_default_get(device_config);
4118
4119 /* initialize configuration parameters */
4120 vxge_device_config_init(device_config, &ll_config.intr_type);
4121
4122 ret = pci_enable_device(pdev);
4123 if (ret) {
4124 vxge_debug_init(VXGE_ERR,
4125 "%s : can not enable PCI device", __func__);
4126 goto _exit0;
4127 }
4128
4129 if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
4130 vxge_debug_ll_config(VXGE_TRACE,
4131 "%s : using 64bit DMA", __func__);
4132
4133 high_dma = 1;
4134
4135 if (pci_set_consistent_dma_mask(pdev,
4136 0xffffffffffffffffULL)) {
4137 vxge_debug_init(VXGE_ERR,
4138 "%s : unable to obtain 64bit DMA for "
4139 "consistent allocations", __func__);
4140 ret = -ENOMEM;
4141 goto _exit1;
4142 }
4143 } else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
4144 vxge_debug_ll_config(VXGE_TRACE,
4145 "%s : using 32bit DMA", __func__);
4146 } else {
4147 ret = -ENOMEM;
4148 goto _exit1;
4149 }
4150
4151 if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4152 vxge_debug_init(VXGE_ERR,
4153 "%s : request regions failed", __func__);
4154 ret = -ENODEV;
4155 goto _exit1;
4156 }
4157
4158 pci_set_master(pdev);
4159
4160 attr.bar0 = pci_ioremap_bar(pdev, 0);
4161 if (!attr.bar0) {
4162 vxge_debug_init(VXGE_ERR,
4163 "%s : cannot remap io memory bar0", __func__);
4164 ret = -ENODEV;
4165 goto _exit2;
4166 }
4167 vxge_debug_ll_config(VXGE_TRACE,
4168 "pci ioremap bar0: %p:0x%llx",
4169 attr.bar0,
4170 (unsigned long long)pci_resource_start(pdev, 0));
4171
4172 status = vxge_hw_device_hw_info_get(attr.bar0,
4173 &ll_config.device_hw_info);
4174 if (status != VXGE_HW_OK) {
4175 vxge_debug_init(VXGE_ERR,
4176 "%s: Reading of hardware info failed."
4177 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4178 ret = -EINVAL;
4179 goto _exit3;
4180 }
4181
4182 if (ll_config.device_hw_info.fw_version.major !=
4183 VXGE_DRIVER_FW_VERSION_MAJOR) {
4184 vxge_debug_init(VXGE_ERR,
4185 "%s: Incorrect firmware version."
4186 "Please upgrade the firmware to version 1.x.x",
4187 VXGE_DRIVER_NAME);
4188 ret = -EINVAL;
4189 goto _exit3;
4190 }
4191
4192 vpath_mask = ll_config.device_hw_info.vpath_mask;
4193 if (vpath_mask == 0) {
4194 vxge_debug_ll_config(VXGE_TRACE,
4195 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4196 ret = -EINVAL;
4197 goto _exit3;
4198 }
4199
4200 vxge_debug_ll_config(VXGE_TRACE,
4201 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4202 (unsigned long long)vpath_mask);
4203
4204 /* Check how many vpaths are available */
4205 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4206 if (!((vpath_mask) & vxge_mBIT(i)))
4207 continue;
4208 max_vpath_supported++;
4209 }
4210
4211 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4212 if ((VXGE_HW_FUNCTION_MODE_SRIOV ==
4213 ll_config.device_hw_info.function_mode) &&
4214 (max_config_dev > 1) && (pdev->is_physfn)) {
4215 ret = pci_enable_sriov(pdev, max_config_dev - 1);
4216 if (ret)
4217 vxge_debug_ll_config(VXGE_ERR,
4218 "Failed to enable SRIOV: %d \n", ret);
4219 }
4220
4221 /*
4222 * Configure vpaths and get driver configured number of vpaths
4223 * which is less than or equal to the maximum vpaths per function.
4224 */
4225 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4226 if (!no_of_vpath) {
4227 vxge_debug_ll_config(VXGE_ERR,
4228 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4229 ret = 0;
4230 goto _exit3;
4231 }
4232
4233 /* Setting driver callbacks */
4234 attr.uld_callbacks.link_up = vxge_callback_link_up;
4235 attr.uld_callbacks.link_down = vxge_callback_link_down;
4236 attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4237
4238 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4239 if (status != VXGE_HW_OK) {
4240 vxge_debug_init(VXGE_ERR,
4241 "Failed to initialize device (%d)", status);
4242 ret = -EINVAL;
4243 goto _exit3;
4244 }
4245
4246 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4247
4248 /* set private device info */
4249 pci_set_drvdata(pdev, hldev);
4250
4251 ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4252 ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4253 ll_config.addr_learn_en = addr_learn_en;
4254 ll_config.rth_algorithm = RTH_ALG_JENKINS;
4255 ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4256 ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4257 ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4258 ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4259 ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4260 ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4261 ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4262 ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4263 ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4264
4265 if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4266 &vdev)) {
4267 ret = -EINVAL;
4268 goto _exit4;
4269 }
4270
4271 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4272 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4273 vxge_hw_device_trace_level_get(hldev));
4274
4275 /* set private HW device info */
4276 hldev->ndev = vdev->ndev;
4277 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4278 vdev->bar0 = attr.bar0;
4279 vdev->max_vpath_supported = max_vpath_supported;
4280 vdev->no_of_vpath = no_of_vpath;
4281
4282 /* Virtual Path count */
4283 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4284 if (!vxge_bVALn(vpath_mask, i, 1))
4285 continue;
4286 if (j >= vdev->no_of_vpath)
4287 break;
4288
4289 vdev->vpaths[j].is_configured = 1;
4290 vdev->vpaths[j].device_id = i;
4291 vdev->vpaths[j].fifo.driver_id = j;
4292 vdev->vpaths[j].ring.driver_id = j;
4293 vdev->vpaths[j].vdev = vdev;
4294 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4295 memcpy((u8 *)vdev->vpaths[j].macaddr,
4296 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4297 ETH_ALEN);
4298
4299 /* Initialize the mac address list header */
4300 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4301
4302 vdev->vpaths[j].mac_addr_cnt = 0;
4303 vdev->vpaths[j].mcast_addr_cnt = 0;
4304 j++;
4305 }
4306 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4307 vdev->max_config_port = max_config_port;
4308
4309 vdev->vlan_tag_strip = vlan_tag_strip;
4310
4311 /* map the hashing selector table to the configured vpaths */
4312 for (i = 0; i < vdev->no_of_vpath; i++)
4313 vdev->vpath_selector[i] = vpath_selector[i];
4314
4315 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4316
4317 ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4318 ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4319 ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4320
4321 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4322 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4323
4324 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4325 vdev->ndev->name, ll_config.device_hw_info.part_number);
4326
4327 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4328 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4329
4330 vxge_debug_init(VXGE_TRACE,
4331 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4332 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4333 macaddr[3], macaddr[4], macaddr[5]);
4334
4335 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4336 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4337
4338 vxge_debug_init(VXGE_TRACE,
4339 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4340 ll_config.device_hw_info.fw_version.version,
4341 ll_config.device_hw_info.fw_date.date);
4342
4343 if (new_device) {
4344 switch (ll_config.device_hw_info.function_mode) {
4345 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4346 vxge_debug_init(VXGE_TRACE,
4347 "%s: Single Function Mode Enabled", vdev->ndev->name);
4348 break;
4349 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4350 vxge_debug_init(VXGE_TRACE,
4351 "%s: Multi Function Mode Enabled", vdev->ndev->name);
4352 break;
4353 case VXGE_HW_FUNCTION_MODE_SRIOV:
4354 vxge_debug_init(VXGE_TRACE,
4355 "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4356 break;
4357 case VXGE_HW_FUNCTION_MODE_MRIOV:
4358 vxge_debug_init(VXGE_TRACE,
4359 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4360 break;
4361 }
4362 }
4363
4364 vxge_print_parm(vdev, vpath_mask);
4365
4366 /* Store the fw version for ethttool option */
4367 strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4368 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4369 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4370
4371 /* Copy the station mac address to the list */
4372 for (i = 0; i < vdev->no_of_vpath; i++) {
4373 entry = (struct vxge_mac_addrs *)
4374 kzalloc(sizeof(struct vxge_mac_addrs),
4375 GFP_KERNEL);
4376 if (NULL == entry) {
4377 vxge_debug_init(VXGE_ERR,
4378 "%s: mac_addr_list : memory allocation failed",
4379 vdev->ndev->name);
4380 ret = -EPERM;
4381 goto _exit5;
4382 }
4383 macaddr = (u8 *)&entry->macaddr;
4384 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4385 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4386 vdev->vpaths[i].mac_addr_cnt = 1;
4387 }
4388
4389 kfree(device_config);
4390 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4391 vdev->ndev->name, __func__, __LINE__);
4392
4393 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4394 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4395 vxge_hw_device_trace_level_get(hldev));
4396
4397 return 0;
4398
4399 _exit5:
4400 for (i = 0; i < vdev->no_of_vpath; i++)
4401 vxge_free_mac_add_list(&vdev->vpaths[i]);
4402
4403 vxge_device_unregister(hldev);
4404 _exit4:
4405 pci_disable_sriov(pdev);
4406 vxge_hw_device_terminate(hldev);
4407 _exit3:
4408 iounmap(attr.bar0);
4409 _exit2:
4410 pci_release_regions(pdev);
4411 _exit1:
4412 pci_disable_device(pdev);
4413 _exit0:
4414 kfree(device_config);
4415 driver_config->config_dev_cnt--;
4416 pci_set_drvdata(pdev, NULL);
4417 return ret;
4418 }
4419
4420 /**
4421 * vxge_rem_nic - Free the PCI device
4422 * @pdev: structure containing the PCI related information of the device.
4423 * Description: This function is called by the Pci subsystem to release a
4424 * PCI device and free up all resource held up by the device.
4425 */
4426 static void __devexit
4427 vxge_remove(struct pci_dev *pdev)
4428 {
4429 struct __vxge_hw_device *hldev;
4430 struct vxgedev *vdev = NULL;
4431 struct net_device *dev;
4432 int i = 0;
4433 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4434 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4435 u32 level_trace;
4436 #endif
4437
4438 hldev = (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4439
4440 if (hldev == NULL)
4441 return;
4442 dev = hldev->ndev;
4443 vdev = netdev_priv(dev);
4444
4445 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4446 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4447 level_trace = vdev->level_trace;
4448 #endif
4449 vxge_debug_entryexit(level_trace,
4450 "%s:%d", __func__, __LINE__);
4451
4452 vxge_debug_init(level_trace,
4453 "%s : removing PCI device...", __func__);
4454 vxge_device_unregister(hldev);
4455
4456 for (i = 0; i < vdev->no_of_vpath; i++) {
4457 vxge_free_mac_add_list(&vdev->vpaths[i]);
4458 vdev->vpaths[i].mcast_addr_cnt = 0;
4459 vdev->vpaths[i].mac_addr_cnt = 0;
4460 }
4461
4462 kfree(vdev->vpaths);
4463
4464 iounmap(vdev->bar0);
4465
4466 pci_disable_sriov(pdev);
4467
4468 /* we are safe to free it now */
4469 free_netdev(dev);
4470
4471 vxge_debug_init(level_trace,
4472 "%s:%d Device unregistered", __func__, __LINE__);
4473
4474 vxge_hw_device_terminate(hldev);
4475
4476 pci_disable_device(pdev);
4477 pci_release_regions(pdev);
4478 pci_set_drvdata(pdev, NULL);
4479 vxge_debug_entryexit(level_trace,
4480 "%s:%d Exiting...", __func__, __LINE__);
4481 }
4482
4483 static struct pci_error_handlers vxge_err_handler = {
4484 .error_detected = vxge_io_error_detected,
4485 .slot_reset = vxge_io_slot_reset,
4486 .resume = vxge_io_resume,
4487 };
4488
4489 static struct pci_driver vxge_driver = {
4490 .name = VXGE_DRIVER_NAME,
4491 .id_table = vxge_id_table,
4492 .probe = vxge_probe,
4493 .remove = __devexit_p(vxge_remove),
4494 #ifdef CONFIG_PM
4495 .suspend = vxge_pm_suspend,
4496 .resume = vxge_pm_resume,
4497 #endif
4498 .err_handler = &vxge_err_handler,
4499 };
4500
4501 static int __init
4502 vxge_starter(void)
4503 {
4504 int ret = 0;
4505 char version[32];
4506 snprintf(version, 32, "%s", DRV_VERSION);
4507
4508 printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4509 VXGE_DRIVER_NAME);
4510 printk(KERN_CRIT "%s: Driver version: %s\n",
4511 VXGE_DRIVER_NAME, version);
4512
4513 verify_bandwidth();
4514
4515 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4516 if (!driver_config)
4517 return -ENOMEM;
4518
4519 ret = pci_register_driver(&vxge_driver);
4520
4521 if (driver_config->config_dev_cnt &&
4522 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4523 vxge_debug_init(VXGE_ERR,
4524 "%s: Configured %d of %d devices",
4525 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4526 driver_config->total_dev_cnt);
4527
4528 if (ret)
4529 kfree(driver_config);
4530
4531 return ret;
4532 }
4533
4534 static void __exit
4535 vxge_closer(void)
4536 {
4537 pci_unregister_driver(&vxge_driver);
4538 kfree(driver_config);
4539 }
4540 module_init(vxge_starter);
4541 module_exit(vxge_closer);
Linux for Ginger Game Console