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wireless: convert drivers to netdev_tx_t
[net-next-2.6.git] / drivers / net / vxge / vxge-main.c
CommitLineData
703da5a1
RV		 1/******************************************************************************
2* This software may be used and distributed according to the terms of
3* the GNU General Public License (GPL), incorporated herein by reference.
4* Drivers based on or derived from this code fall under the GPL and must
5* retain the authorship, copyright and license notice. This file is not
6* a complete program and may only be used when the entire operating
7* system is licensed under the GPL.
8* See the file COPYING in this distribution for more information.
9*
10* vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
11* Virtualized Server Adapter.
12* Copyright(c) 2002-2009 Neterion Inc.
13*
14* The module loadable parameters that are supported by the driver and a brief
15* explanation of all the variables:
16* vlan_tag_strip:
17* Strip VLAN Tag enable/disable. Instructs the device to remove
18* the VLAN tag from all received tagged frames that are not
19* replicated at the internal L2 switch.
20* 0 - Do not strip the VLAN tag.
21* 1 - Strip the VLAN tag.
22*
23* addr_learn_en:
24* Enable learning the mac address of the guest OS interface in
25* a virtualization environment.
26* 0 - DISABLE
27* 1 - ENABLE
28*
29* max_config_port:
30* Maximum number of port to be supported.
31* MIN -1 and MAX - 2
32*
33* max_config_vpath:
34* This configures the maximum no of VPATH configures for each
35* device function.
36* MIN - 1 and MAX - 17
37*
38* max_config_dev:
39* This configures maximum no of Device function to be enabled.
40* MIN - 1 and MAX - 17
41*
42******************************************************************************/
43
44#include <linux/if_vlan.h>
45#include <linux/pci.h>
2b05e002 46#include <linux/tcp.h>
703da5a1
RV		 47#include <net/ip.h>
48#include <linux/netdevice.h>
49#include <linux/etherdevice.h>
50#include "vxge-main.h"
51#include "vxge-reg.h"
52
53MODULE_LICENSE("Dual BSD/GPL");
54MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
55 "Virtualized Server Adapter");
56
57static struct pci_device_id vxge_id_table[] __devinitdata = {
58 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
59 PCI_ANY_ID},
60 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
61 PCI_ANY_ID},
62 {0}
63};
64
65MODULE_DEVICE_TABLE(pci, vxge_id_table);
66
67VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
68VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
69VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
70VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
71VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
72VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
73
74static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
75 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
76static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
77 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
78module_param_array(bw_percentage, uint, NULL, 0);
79
80static struct vxge_drv_config *driver_config;
81
82static inline int is_vxge_card_up(struct vxgedev *vdev)
83{
84 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
85}
86
87static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
88{
89 unsigned long flags = 0;
ff67df55
BL		 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;
703da5a1 95
ff67df55
BL		 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) ;
703da5a1
RV		 109}
110
111static 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
120static 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 */
135void 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
147void 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
162void 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
174static 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
186void 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 */
212void
213vxge_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 */
236void
237vxge_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 */
259static struct sk_buff*
260vxge_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;
ea11bbe0 289 rx_priv->skb_data = NULL;
703da5a1
RV		 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 */
300static 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
ea11bbe0
BL		 309 rx_priv->skb_data = rx_priv->skb->data;
310 dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
703da5a1
RV		 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 */
334static enum vxge_hw_status
335vxge_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
358static inline void
359vxge_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))
a5d165b5 382 vlan_gro_receive(ring->napi_p, ring->vlgrp,
703da5a1
RV		 383 ext_info->vlan, skb);
384 else
a5d165b5 385 napi_gro_receive(ring->napi_p, skb);
703da5a1
RV		 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
398static 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
408static 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 */
428enum vxge_hw_status
429vxge_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 {
3f23e436 450 prefetch((char *)dtr + L1_CACHE_BYTES);
703da5a1
RV		 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;
ea11bbe0 455 prefetch(rx_priv->skb_data);
703da5a1
RV		 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
22fa125e
SH		 464 pkt_length -= ETH_FCS_LEN;
465
703da5a1
RV		 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 dev->last_rx = jiffies;
592
593 vxge_debug_entryexit(VXGE_TRACE,
594 "%s:%d Exiting...",
595 __func__, __LINE__);
596 return VXGE_HW_OK;
597}
598
599/*
600 * vxge_xmit_compl
601 *
602 * If an interrupt was raised to indicate DMA complete of the Tx packet,
603 * this function is called. It identifies the last TxD whose buffer was
604 * freed and frees all skbs whose data have already DMA'ed into the NICs
605 * internal memory.
606 */
607enum vxge_hw_status
608vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
609 enum vxge_hw_fifo_tcode t_code, void *userdata,
ff67df55 610 struct sk_buff ***skb_ptr, int nr_skb, int *more)
703da5a1
RV		 611{
612 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
ff67df55 613 struct sk_buff *skb, **done_skb = *skb_ptr;
703da5a1
RV		 614 int pkt_cnt = 0;
615
616 vxge_debug_entryexit(VXGE_TRACE,
617 "%s:%d Entered....", __func__, __LINE__);
618
619 do {
620 int frg_cnt;
621 skb_frag_t *frag;
622 int i = 0, j;
623 struct vxge_tx_priv *txd_priv =
624 vxge_hw_fifo_txdl_private_get(dtr);
625
626 skb = txd_priv->skb;
627 frg_cnt = skb_shinfo(skb)->nr_frags;
628 frag = &skb_shinfo(skb)->frags[0];
629
630 vxge_debug_tx(VXGE_TRACE,
631 "%s: %s:%d fifo_hw = %p dtr = %p "
632 "tcode = 0x%x", fifo->ndev->name, __func__,
633 __LINE__, fifo_hw, dtr, t_code);
634 /* check skb validity */
635 vxge_assert(skb);
636 vxge_debug_tx(VXGE_TRACE,
637 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
638 fifo->ndev->name, __func__, __LINE__,
639 skb, txd_priv, frg_cnt);
640 if (unlikely(t_code)) {
641 fifo->stats.tx_errors++;
642 vxge_debug_tx(VXGE_ERR,
643 "%s: tx: dtr %p completed due to "
644 "error t_code %01x", fifo->ndev->name,
645 dtr, t_code);
646 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
647 }
648
649 /* for unfragmented skb */
650 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
651 skb_headlen(skb), PCI_DMA_TODEVICE);
652
653 for (j = 0; j < frg_cnt; j++) {
654 pci_unmap_page(fifo->pdev,
655 txd_priv->dma_buffers[i++],
656 frag->size, PCI_DMA_TODEVICE);
657 frag += 1;
658 }
659
660 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
661
662 /* Updating the statistics block */
663 fifo->stats.tx_frms++;
664 fifo->stats.tx_bytes += skb->len;
665
ff67df55
BL		 666 *done_skb++ = skb;
667
668 if (--nr_skb <= 0) {
669 *more = 1;
670 break;
671 }
703da5a1
RV		 672
673 pkt_cnt++;
674 if (pkt_cnt > fifo->indicate_max_pkts)
675 break;
676
677 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
678 &dtr, &t_code) == VXGE_HW_OK);
679
ff67df55 680 *skb_ptr = done_skb;
703da5a1
RV		 681 vxge_wake_tx_queue(fifo, skb);
682
703da5a1
RV		 683 vxge_debug_entryexit(VXGE_TRACE,
684 "%s: %s:%d Exiting...",
685 fifo->ndev->name, __func__, __LINE__);
686 return VXGE_HW_OK;
687}
688
28679751 689/* select a vpath to transmit the packet */
703da5a1
RV		 690static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
691 int *do_lock)
692{
693 u16 queue_len, counter = 0;
694 if (skb->protocol == htons(ETH_P_IP)) {
695 struct iphdr *ip;
696 struct tcphdr *th;
697
698 ip = ip_hdr(skb);
699
700 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
701 th = (struct tcphdr *)(((unsigned char *)ip) +
702 ip->ihl*4);
703
704 queue_len = vdev->no_of_vpath;
705 counter = (ntohs(th->source) +
706 ntohs(th->dest)) &
707 vdev->vpath_selector[queue_len - 1];
708 if (counter >= queue_len)
709 counter = queue_len - 1;
710
711 if (ip->protocol == IPPROTO_UDP) {
712#ifdef NETIF_F_LLTX
713 *do_lock = 0;
714#endif
715 }
716 }
717 }
718 return counter;
719}
720
721static enum vxge_hw_status vxge_search_mac_addr_in_list(
722 struct vxge_vpath *vpath, u64 del_mac)
723{
724 struct list_head *entry, *next;
725 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
726 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
727 return TRUE;
728 }
729 return FALSE;
730}
731
732static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
733{
734 struct macInfo mac_info;
735 u8 *mac_address = NULL;
736 u64 mac_addr = 0, vpath_vector = 0;
737 int vpath_idx = 0;
738 enum vxge_hw_status status = VXGE_HW_OK;
739 struct vxge_vpath *vpath = NULL;
740 struct __vxge_hw_device *hldev;
741
742 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
743
744 mac_address = (u8 *)&mac_addr;
745 memcpy(mac_address, mac_header, ETH_ALEN);
746
747 /* Is this mac address already in the list? */
748 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
749 vpath = &vdev->vpaths[vpath_idx];
750 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
751 return vpath_idx;
752 }
753
754 memset(&mac_info, 0, sizeof(struct macInfo));
755 memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
756
757 /* Any vpath has room to add mac address to its da table? */
758 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
759 vpath = &vdev->vpaths[vpath_idx];
760 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
761 /* Add this mac address to this vpath */
762 mac_info.vpath_no = vpath_idx;
763 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
764 status = vxge_add_mac_addr(vdev, &mac_info);
765 if (status != VXGE_HW_OK)
766 return -EPERM;
767 return vpath_idx;
768 }
769 }
770
771 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
772 vpath_idx = 0;
773 mac_info.vpath_no = vpath_idx;
774 /* Is the first vpath already selected as catch-basin ? */
775 vpath = &vdev->vpaths[vpath_idx];
776 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
777 /* Add this mac address to this vpath */
778 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
779 return -EPERM;
780 return vpath_idx;
781 }
782
783 /* Select first vpath as catch-basin */
784 vpath_vector = vxge_mBIT(vpath->device_id);
785 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
786 vxge_hw_mgmt_reg_type_mrpcim,
787 0,
788 (ulong)offsetof(
789 struct vxge_hw_mrpcim_reg,
790 rts_mgr_cbasin_cfg),
791 vpath_vector);
792 if (status != VXGE_HW_OK) {
793 vxge_debug_tx(VXGE_ERR,
794 "%s: Unable to set the vpath-%d in catch-basin mode",
795 VXGE_DRIVER_NAME, vpath->device_id);
796 return -EPERM;
797 }
798
799 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
800 return -EPERM;
801
802 return vpath_idx;
803}
804
805/**
806 * vxge_xmit
807 * @skb : the socket buffer containing the Tx data.
808 * @dev : device pointer.
809 *
810 * This function is the Tx entry point of the driver. Neterion NIC supports
811 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
812 * NOTE: when device cant queue the pkt, just the trans_start variable will
813 * not be upadted.
814*/
815static int
816vxge_xmit(struct sk_buff *skb, struct net_device *dev)
817{
818 struct vxge_fifo *fifo = NULL;
819 void *dtr_priv;
820 void *dtr = NULL;
821 struct vxgedev *vdev = NULL;
822 enum vxge_hw_status status;
823 int frg_cnt, first_frg_len;
824 skb_frag_t *frag;
825 int i = 0, j = 0, avail;
826 u64 dma_pointer;
827 struct vxge_tx_priv *txdl_priv = NULL;
828 struct __vxge_hw_fifo *fifo_hw;
703da5a1
RV		 829 int offload_type;
830 unsigned long flags = 0;
831 int vpath_no = 0;
832 int do_spin_tx_lock = 1;
833
834 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
835 dev->name, __func__, __LINE__);
836
837 /* A buffer with no data will be dropped */
838 if (unlikely(skb->len <= 0)) {
839 vxge_debug_tx(VXGE_ERR,
840 "%s: Buffer has no data..", dev->name);
841 dev_kfree_skb(skb);
842 return NETDEV_TX_OK;
843 }
844
845 vdev = (struct vxgedev *)netdev_priv(dev);
846
847 if (unlikely(!is_vxge_card_up(vdev))) {
848 vxge_debug_tx(VXGE_ERR,
849 "%s: vdev not initialized", dev->name);
850 dev_kfree_skb(skb);
851 return NETDEV_TX_OK;
852 }
853
854 if (vdev->config.addr_learn_en) {
855 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
856 if (vpath_no == -EPERM) {
857 vxge_debug_tx(VXGE_ERR,
858 "%s: Failed to store the mac address",
859 dev->name);
860 dev_kfree_skb(skb);
861 return NETDEV_TX_OK;
862 }
863 }
864
865 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
866 vpath_no = skb_get_queue_mapping(skb);
867 else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
868 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
869
870 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
871
872 if (vpath_no >= vdev->no_of_vpath)
873 vpath_no = 0;
874
875 fifo = &vdev->vpaths[vpath_no].fifo;
876 fifo_hw = fifo->handle;
877
878 if (do_spin_tx_lock)
879 spin_lock_irqsave(&fifo->tx_lock, flags);
880 else {
881 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
882 return NETDEV_TX_LOCKED;
883 }
884
885 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
886 if (netif_subqueue_stopped(dev, skb)) {
887 spin_unlock_irqrestore(&fifo->tx_lock, flags);
888 return NETDEV_TX_BUSY;
889 }
890 } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
891 if (netif_queue_stopped(dev)) {
892 spin_unlock_irqrestore(&fifo->tx_lock, flags);
893 return NETDEV_TX_BUSY;
894 }
895 }
896 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
897 if (avail == 0) {
898 vxge_debug_tx(VXGE_ERR,
899 "%s: No free TXDs available", dev->name);
900 fifo->stats.txd_not_free++;
901 vxge_stop_tx_queue(fifo);
902 goto _exit2;
903 }
904
4403b371
BL		 905 /* Last TXD? Stop tx queue to avoid dropping packets. TX
906 * completion will resume the queue.
907 */
908 if (avail == 1)
909 vxge_stop_tx_queue(fifo);
910
703da5a1
RV		 911 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
912 if (unlikely(status != VXGE_HW_OK)) {
913 vxge_debug_tx(VXGE_ERR,
914 "%s: Out of descriptors .", dev->name);
915 fifo->stats.txd_out_of_desc++;
916 vxge_stop_tx_queue(fifo);
917 goto _exit2;
918 }
919
920 vxge_debug_tx(VXGE_TRACE,
921 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
922 dev->name, __func__, __LINE__,
923 fifo_hw, dtr, dtr_priv);
924
925 if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
926 u16 vlan_tag = vlan_tx_tag_get(skb);
927 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
928 }
929
930 first_frg_len = skb_headlen(skb);
931
932 dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
933 PCI_DMA_TODEVICE);
934
935 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
936 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
937 vxge_stop_tx_queue(fifo);
938 fifo->stats.pci_map_fail++;
939 goto _exit2;
940 }
941
942 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
943 txdl_priv->skb = skb;
944 txdl_priv->dma_buffers[j] = dma_pointer;
945
946 frg_cnt = skb_shinfo(skb)->nr_frags;
947 vxge_debug_tx(VXGE_TRACE,
948 "%s: %s:%d skb = %p txdl_priv = %p "
949 "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
950 __func__, __LINE__, skb, txdl_priv,
951 frg_cnt, (unsigned long long)dma_pointer);
952
953 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
954 first_frg_len);
955
956 frag = &skb_shinfo(skb)->frags[0];
957 for (i = 0; i < frg_cnt; i++) {
958 /* ignore 0 length fragment */
959 if (!frag->size)
960 continue;
961
962 dma_pointer =
963 (u64)pci_map_page(fifo->pdev, frag->page,
964 frag->page_offset, frag->size,
965 PCI_DMA_TODEVICE);
966
967 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
968 goto _exit0;
969 vxge_debug_tx(VXGE_TRACE,
970 "%s: %s:%d frag = %d dma_pointer = 0x%llx",
971 dev->name, __func__, __LINE__, i,
972 (unsigned long long)dma_pointer);
973
974 txdl_priv->dma_buffers[j] = dma_pointer;
975 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
976 frag->size);
977 frag += 1;
978 }
979
980 offload_type = vxge_offload_type(skb);
981
982 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
983
984 int mss = vxge_tcp_mss(skb);
985 if (mss) {
703da5a1
RV		 986 vxge_debug_tx(VXGE_TRACE,
987 "%s: %s:%d mss = %d",
988 dev->name, __func__, __LINE__, mss);
989 vxge_hw_fifo_txdl_mss_set(dtr, mss);
990 } else {
991 vxge_assert(skb->len <=
992 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
993 vxge_assert(0);
994 goto _exit1;
995 }
996 }
997
998 if (skb->ip_summed == CHECKSUM_PARTIAL)
999 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
1000 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
1001 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
1002 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
1003
1004 vxge_hw_fifo_txdl_post(fifo_hw, dtr);
28679751
ED		 1005#ifdef NETIF_F_LLTX
1006 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
1007#endif
703da5a1
RV		 1008 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1009
1010 VXGE_COMPLETE_VPATH_TX(fifo);
1011 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
1012 dev->name, __func__, __LINE__);
6ed10654 1013 return NETDEV_TX_OK;
703da5a1
RV		 1014
1015_exit0:
1016 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1017
1018_exit1:
1019 j = 0;
1020 frag = &skb_shinfo(skb)->frags[0];
1021
1022 pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1023 skb_headlen(skb), PCI_DMA_TODEVICE);
1024
1025 for (; j < i; j++) {
1026 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1027 frag->size, PCI_DMA_TODEVICE);
1028 frag += 1;
1029 }
1030
1031 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1032_exit2:
1033 dev_kfree_skb(skb);
1034 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1035 VXGE_COMPLETE_VPATH_TX(fifo);
1036
6ed10654 1037 return NETDEV_TX_OK;
703da5a1
RV		 1038}
1039
1040/*
1041 * vxge_rx_term
1042 *
1043 * Function will be called by hw function to abort all outstanding receive
1044 * descriptors.
1045 */
1046static void
1047vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1048{
1049 struct vxge_ring *ring = (struct vxge_ring *)userdata;
1050 struct vxge_rx_priv *rx_priv =
1051 vxge_hw_ring_rxd_private_get(dtrh);
1052
1053 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1054 ring->ndev->name, __func__, __LINE__);
1055 if (state != VXGE_HW_RXD_STATE_POSTED)
1056 return;
1057
1058 pci_unmap_single(ring->pdev, rx_priv->data_dma,
1059 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1060
1061 dev_kfree_skb(rx_priv->skb);
ea11bbe0 1062 rx_priv->skb_data = NULL;
703da5a1
RV		 1063
1064 vxge_debug_entryexit(VXGE_TRACE,
1065 "%s: %s:%d Exiting...",
1066 ring->ndev->name, __func__, __LINE__);
1067}
1068
1069/*
1070 * vxge_tx_term
1071 *
1072 * Function will be called to abort all outstanding tx descriptors
1073 */
1074static void
1075vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1076{
1077 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1078 skb_frag_t *frag;
1079 int i = 0, j, frg_cnt;
1080 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1081 struct sk_buff *skb = txd_priv->skb;
1082
1083 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1084
1085 if (state != VXGE_HW_TXDL_STATE_POSTED)
1086 return;
1087
1088 /* check skb validity */
1089 vxge_assert(skb);
1090 frg_cnt = skb_shinfo(skb)->nr_frags;
1091 frag = &skb_shinfo(skb)->frags[0];
1092
1093 /* for unfragmented skb */
1094 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1095 skb_headlen(skb), PCI_DMA_TODEVICE);
1096
1097 for (j = 0; j < frg_cnt; j++) {
1098 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1099 frag->size, PCI_DMA_TODEVICE);
1100 frag += 1;
1101 }
1102
1103 dev_kfree_skb(skb);
1104
1105 vxge_debug_entryexit(VXGE_TRACE,
1106 "%s:%d Exiting...", __func__, __LINE__);
1107}
1108
1109/**
1110 * vxge_set_multicast
1111 * @dev: pointer to the device structure
1112 *
1113 * Entry point for multicast address enable/disable
1114 * This function is a driver entry point which gets called by the kernel
1115 * whenever multicast addresses must be enabled/disabled. This also gets
1116 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1117 * determine, if multicast address must be enabled or if promiscuous mode
1118 * is to be disabled etc.
1119 */
1120static void vxge_set_multicast(struct net_device *dev)
1121{
1122 struct dev_mc_list *mclist;
1123 struct vxgedev *vdev;
1124 int i, mcast_cnt = 0;
1125 struct __vxge_hw_device *hldev;
1126 enum vxge_hw_status status = VXGE_HW_OK;
1127 struct macInfo mac_info;
1128 int vpath_idx = 0;
1129 struct vxge_mac_addrs *mac_entry;
1130 struct list_head *list_head;
1131 struct list_head *entry, *next;
1132 u8 *mac_address = NULL;
1133
1134 vxge_debug_entryexit(VXGE_TRACE,
1135 "%s:%d", __func__, __LINE__);
1136
1137 vdev = (struct vxgedev *)netdev_priv(dev);
1138 hldev = (struct __vxge_hw_device *)vdev->devh;
1139
1140 if (unlikely(!is_vxge_card_up(vdev)))
1141 return;
1142
1143 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1144 for (i = 0; i < vdev->no_of_vpath; i++) {
1145 vxge_assert(vdev->vpaths[i].is_open);
1146 status = vxge_hw_vpath_mcast_enable(
1147 vdev->vpaths[i].handle);
1148 vdev->all_multi_flg = 1;
1149 }
1150 } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1151 for (i = 0; i < vdev->no_of_vpath; i++) {
1152 vxge_assert(vdev->vpaths[i].is_open);
1153 status = vxge_hw_vpath_mcast_disable(
1154 vdev->vpaths[i].handle);
1155 vdev->all_multi_flg = 1;
1156 }
1157 }
1158
1159 if (status != VXGE_HW_OK)
1160 vxge_debug_init(VXGE_ERR,
1161 "failed to %s multicast, status %d",
1162 dev->flags & IFF_ALLMULTI ?
1163 "enable" : "disable", status);
1164
1165 if (!vdev->config.addr_learn_en) {
1166 if (dev->flags & IFF_PROMISC) {
1167 for (i = 0; i < vdev->no_of_vpath; i++) {
1168 vxge_assert(vdev->vpaths[i].is_open);
1169 status = vxge_hw_vpath_promisc_enable(
1170 vdev->vpaths[i].handle);
1171 }
1172 } else {
1173 for (i = 0; i < vdev->no_of_vpath; i++) {
1174 vxge_assert(vdev->vpaths[i].is_open);
1175 status = vxge_hw_vpath_promisc_disable(
1176 vdev->vpaths[i].handle);
1177 }
1178 }
1179 }
1180
1181 memset(&mac_info, 0, sizeof(struct macInfo));
1182 /* Update individual M_CAST address list */
1183 if ((!vdev->all_multi_flg) && dev->mc_count) {
1184
1185 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1186 list_head = &vdev->vpaths[0].mac_addr_list;
1187 if ((dev->mc_count +
1188 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1189 vdev->vpaths[0].max_mac_addr_cnt)
1190 goto _set_all_mcast;
1191
1192 /* Delete previous MC's */
1193 for (i = 0; i < mcast_cnt; i++) {
1194 if (!list_empty(list_head))
1195 mac_entry = (struct vxge_mac_addrs *)
1196 list_first_entry(list_head,
1197 struct vxge_mac_addrs,
1198 item);
1199
1200 list_for_each_safe(entry, next, list_head) {
1201
1202 mac_entry = (struct vxge_mac_addrs *) entry;
1203 /* Copy the mac address to delete */
1204 mac_address = (u8 *)&mac_entry->macaddr;
1205 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1206
1207 /* Is this a multicast address */
1208 if (0x01 & mac_info.macaddr[0]) {
1209 for (vpath_idx = 0; vpath_idx <
1210 vdev->no_of_vpath;
1211 vpath_idx++) {
1212 mac_info.vpath_no = vpath_idx;
1213 status = vxge_del_mac_addr(
1214 vdev,
1215 &mac_info);
1216 }
1217 }
1218 }
1219 }
1220
1221 /* Add new ones */
1222 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1223 i++, mclist = mclist->next) {
1224
1225 memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1226 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1227 vpath_idx++) {
1228 mac_info.vpath_no = vpath_idx;
1229 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1230 status = vxge_add_mac_addr(vdev, &mac_info);
1231 if (status != VXGE_HW_OK) {
1232 vxge_debug_init(VXGE_ERR,
1233 "%s:%d Setting individual"
1234 "multicast address failed",
1235 __func__, __LINE__);
1236 goto _set_all_mcast;
1237 }
1238 }
1239 }
1240
1241 return;
1242_set_all_mcast:
1243 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1244 /* Delete previous MC's */
1245 for (i = 0; i < mcast_cnt; i++) {
1246
1247 list_for_each_safe(entry, next, list_head) {
1248
1249 mac_entry = (struct vxge_mac_addrs *) entry;
1250 /* Copy the mac address to delete */
1251 mac_address = (u8 *)&mac_entry->macaddr;
1252 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1253
1254 /* Is this a multicast address */
1255 if (0x01 & mac_info.macaddr[0])
1256 break;
1257 }
1258
1259 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1260 vpath_idx++) {
1261 mac_info.vpath_no = vpath_idx;
1262 status = vxge_del_mac_addr(vdev, &mac_info);
1263 }
1264 }
1265
1266 /* Enable all multicast */
1267 for (i = 0; i < vdev->no_of_vpath; i++) {
1268 vxge_assert(vdev->vpaths[i].is_open);
1269 status = vxge_hw_vpath_mcast_enable(
1270 vdev->vpaths[i].handle);
1271 if (status != VXGE_HW_OK) {
1272 vxge_debug_init(VXGE_ERR,
1273 "%s:%d Enabling all multicasts failed",
1274 __func__, __LINE__);
1275 }
1276 vdev->all_multi_flg = 1;
1277 }
1278 dev->flags |= IFF_ALLMULTI;
1279 }
1280
1281 vxge_debug_entryexit(VXGE_TRACE,
1282 "%s:%d Exiting...", __func__, __LINE__);
1283}
1284
1285/**
1286 * vxge_set_mac_addr
1287 * @dev: pointer to the device structure
1288 *
1289 * Update entry "0" (default MAC addr)
1290 */
1291static int vxge_set_mac_addr(struct net_device *dev, void *p)
1292{
1293 struct sockaddr *addr = p;
1294 struct vxgedev *vdev;
1295 struct __vxge_hw_device *hldev;
1296 enum vxge_hw_status status = VXGE_HW_OK;
1297 struct macInfo mac_info_new, mac_info_old;
1298 int vpath_idx = 0;
1299
1300 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1301
1302 vdev = (struct vxgedev *)netdev_priv(dev);
1303 hldev = vdev->devh;
1304
1305 if (!is_valid_ether_addr(addr->sa_data))
1306 return -EINVAL;
1307
1308 memset(&mac_info_new, 0, sizeof(struct macInfo));
1309 memset(&mac_info_old, 0, sizeof(struct macInfo));
1310
1311 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...",
1312 __func__, __LINE__);
1313
1314 /* Get the old address */
1315 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1316
1317 /* Copy the new address */
1318 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1319
1320 /* First delete the old mac address from all the vpaths
1321 as we can't specify the index while adding new mac address */
1322 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1323 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1324 if (!vpath->is_open) {
1325 /* This can happen when this interface is added/removed
1326 to the bonding interface. Delete this station address
1327 from the linked list */
1328 vxge_mac_list_del(vpath, &mac_info_old);
1329
1330 /* Add this new address to the linked list
1331 for later restoring */
1332 vxge_mac_list_add(vpath, &mac_info_new);
1333
1334 continue;
1335 }
1336 /* Delete the station address */
1337 mac_info_old.vpath_no = vpath_idx;
1338 status = vxge_del_mac_addr(vdev, &mac_info_old);
1339 }
1340
1341 if (unlikely(!is_vxge_card_up(vdev))) {
1342 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1343 return VXGE_HW_OK;
1344 }
1345
1346 /* Set this mac address to all the vpaths */
1347 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1348 mac_info_new.vpath_no = vpath_idx;
1349 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1350 status = vxge_add_mac_addr(vdev, &mac_info_new);
1351 if (status != VXGE_HW_OK)
1352 return -EINVAL;
1353 }
1354
1355 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1356
1357 return status;
1358}
1359
1360/*
1361 * vxge_vpath_intr_enable
1362 * @vdev: pointer to vdev
1363 * @vp_id: vpath for which to enable the interrupts
1364 *
1365 * Enables the interrupts for the vpath
1366*/
1367void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1368{
1369 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1370 int msix_id, alarm_msix_id;
1371 int tim_msix_id[4] = {[0 ...3] = 0};
1372
1373 vxge_hw_vpath_intr_enable(vpath->handle);
1374
1375 if (vdev->config.intr_type == INTA)
1376 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1377 else {
1378 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1379 alarm_msix_id =
1380 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1381
1382 tim_msix_id[0] = msix_id;
1383 tim_msix_id[1] = msix_id + 1;
1384 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1385 alarm_msix_id);
1386
1387 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1388 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1389
1390 /* enable the alarm vector */
1391 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
1392 }
1393}
1394
1395/*
1396 * vxge_vpath_intr_disable
1397 * @vdev: pointer to vdev
1398 * @vp_id: vpath for which to disable the interrupts
1399 *
1400 * Disables the interrupts for the vpath
1401*/
1402void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1403{
1404 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1405 int msix_id;
1406
1407 vxge_hw_vpath_intr_disable(vpath->handle);
1408
1409 if (vdev->config.intr_type == INTA)
1410 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1411 else {
1412 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1413 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1414 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1415
1416 /* disable the alarm vector */
1417 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1418 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1419 }
1420}
1421
1422/*
1423 * vxge_reset_vpath
1424 * @vdev: pointer to vdev
1425 * @vp_id: vpath to reset
1426 *
1427 * Resets the vpath
1428*/
1429static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1430{
1431 enum vxge_hw_status status = VXGE_HW_OK;
1432 int ret = 0;
1433
1434 /* check if device is down already */
1435 if (unlikely(!is_vxge_card_up(vdev)))
1436 return 0;
1437
1438 /* is device reset already scheduled */
1439 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1440 return 0;
1441
1442 if (vdev->vpaths[vp_id].handle) {
1443 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1444 == VXGE_HW_OK) {
1445 if (is_vxge_card_up(vdev) &&
1446 vxge_hw_vpath_recover_from_reset(
1447 vdev->vpaths[vp_id].handle)
1448 != VXGE_HW_OK) {
1449 vxge_debug_init(VXGE_ERR,
1450 "vxge_hw_vpath_recover_from_reset"
1451 "failed for vpath:%d", vp_id);
1452 return status;
1453 }
1454 } else {
1455 vxge_debug_init(VXGE_ERR,
1456 "vxge_hw_vpath_reset failed for"
1457 "vpath:%d", vp_id);
1458 return status;
1459 }
1460 } else
1461 return VXGE_HW_FAIL;
1462
1463 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1464 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1465
1466 /* Enable all broadcast */
1467 vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1468
1469 /* Enable the interrupts */
1470 vxge_vpath_intr_enable(vdev, vp_id);
1471
1472 smp_wmb();
1473
1474 /* Enable the flow of traffic through the vpath */
1475 vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1476
1477 smp_wmb();
1478 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1479 vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1480
1481 /* Vpath reset done */
1482 clear_bit(vp_id, &vdev->vp_reset);
1483
1484 /* Start the vpath queue */
1485 vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1486
1487 return ret;
1488}
1489
1490static int do_vxge_reset(struct vxgedev *vdev, int event)
1491{
1492 enum vxge_hw_status status;
1493 int ret = 0, vp_id, i;
1494
1495 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1496
1497 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1498 /* check if device is down already */
1499 if (unlikely(!is_vxge_card_up(vdev)))
1500 return 0;
1501
1502 /* is reset already scheduled */
1503 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1504 return 0;
1505 }
1506
1507 if (event == VXGE_LL_FULL_RESET) {
1508 /* wait for all the vpath reset to complete */
1509 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1510 while (test_bit(vp_id, &vdev->vp_reset))
1511 msleep(50);
1512 }
1513
1514 /* if execution mode is set to debug, don't reset the adapter */
1515 if (unlikely(vdev->exec_mode)) {
1516 vxge_debug_init(VXGE_ERR,
1517 "%s: execution mode is debug, returning..",
1518 vdev->ndev->name);
1519 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1520 vxge_stop_all_tx_queue(vdev);
1521 return 0;
1522 }
1523 }
1524
1525 if (event == VXGE_LL_FULL_RESET) {
1526 vxge_hw_device_intr_disable(vdev->devh);
1527
1528 switch (vdev->cric_err_event) {
1529 case VXGE_HW_EVENT_UNKNOWN:
1530 vxge_stop_all_tx_queue(vdev);
1531 vxge_debug_init(VXGE_ERR,
1532 "fatal: %s: Disabling device due to"
1533 "unknown error",
1534 vdev->ndev->name);
1535 ret = -EPERM;
1536 goto out;
1537 case VXGE_HW_EVENT_RESET_START:
1538 break;
1539 case VXGE_HW_EVENT_RESET_COMPLETE:
1540 case VXGE_HW_EVENT_LINK_DOWN:
1541 case VXGE_HW_EVENT_LINK_UP:
1542 case VXGE_HW_EVENT_ALARM_CLEARED:
1543 case VXGE_HW_EVENT_ECCERR:
1544 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1545 ret = -EPERM;
1546 goto out;
1547 case VXGE_HW_EVENT_FIFO_ERR:
1548 case VXGE_HW_EVENT_VPATH_ERR:
1549 break;
1550 case VXGE_HW_EVENT_CRITICAL_ERR:
1551 vxge_stop_all_tx_queue(vdev);
1552 vxge_debug_init(VXGE_ERR,
1553 "fatal: %s: Disabling device due to"
1554 "serious error",
1555 vdev->ndev->name);
1556 /* SOP or device reset required */
1557 /* This event is not currently used */
1558 ret = -EPERM;
1559 goto out;
1560 case VXGE_HW_EVENT_SERR:
1561 vxge_stop_all_tx_queue(vdev);
1562 vxge_debug_init(VXGE_ERR,
1563 "fatal: %s: Disabling device due to"
1564 "serious error",
1565 vdev->ndev->name);
1566 ret = -EPERM;
1567 goto out;
1568 case VXGE_HW_EVENT_SRPCIM_SERR:
1569 case VXGE_HW_EVENT_MRPCIM_SERR:
1570 ret = -EPERM;
1571 goto out;
1572 case VXGE_HW_EVENT_SLOT_FREEZE:
1573 vxge_stop_all_tx_queue(vdev);
1574 vxge_debug_init(VXGE_ERR,
1575 "fatal: %s: Disabling device due to"
1576 "slot freeze",
1577 vdev->ndev->name);
1578 ret = -EPERM;
1579 goto out;
1580 default:
1581 break;
1582
1583 }
1584 }
1585
1586 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1587 vxge_stop_all_tx_queue(vdev);
1588
1589 if (event == VXGE_LL_FULL_RESET) {
1590 status = vxge_reset_all_vpaths(vdev);
1591 if (status != VXGE_HW_OK) {
1592 vxge_debug_init(VXGE_ERR,
1593 "fatal: %s: can not reset vpaths",
1594 vdev->ndev->name);
1595 ret = -EPERM;
1596 goto out;
1597 }
1598 }
1599
1600 if (event == VXGE_LL_COMPL_RESET) {
1601 for (i = 0; i < vdev->no_of_vpath; i++)
1602 if (vdev->vpaths[i].handle) {
1603 if (vxge_hw_vpath_recover_from_reset(
1604 vdev->vpaths[i].handle)
1605 != VXGE_HW_OK) {
1606 vxge_debug_init(VXGE_ERR,
1607 "vxge_hw_vpath_recover_"
1608 "from_reset failed for vpath: "
1609 "%d", i);
1610 ret = -EPERM;
1611 goto out;
1612 }
1613 } else {
1614 vxge_debug_init(VXGE_ERR,
1615 "vxge_hw_vpath_reset failed for "
1616 "vpath:%d", i);
1617 ret = -EPERM;
1618 goto out;
1619 }
1620 }
1621
1622 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1623 /* Reprogram the DA table with populated mac addresses */
1624 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1625 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1626 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1627 }
1628
1629 /* enable vpath interrupts */
1630 for (i = 0; i < vdev->no_of_vpath; i++)
1631 vxge_vpath_intr_enable(vdev, i);
1632
1633 vxge_hw_device_intr_enable(vdev->devh);
1634
1635 smp_wmb();
1636
1637 /* Indicate card up */
1638 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1639
1640 /* Get the traffic to flow through the vpaths */
1641 for (i = 0; i < vdev->no_of_vpath; i++) {
1642 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1643 smp_wmb();
1644 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1645 }
1646
1647 vxge_wake_all_tx_queue(vdev);
1648 }
1649
1650out:
1651 vxge_debug_entryexit(VXGE_TRACE,
1652 "%s:%d Exiting...", __func__, __LINE__);
1653
1654 /* Indicate reset done */
1655 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1656 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1657 return ret;
1658}
1659
1660/*
1661 * vxge_reset
1662 * @vdev: pointer to ll device
1663 *
1664 * driver may reset the chip on events of serr, eccerr, etc
1665 */
1666int vxge_reset(struct vxgedev *vdev)
1667{
1668 do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1669 return 0;
1670}
1671
1672/**
1673 * vxge_poll - Receive handler when Receive Polling is used.
1674 * @dev: pointer to the device structure.
1675 * @budget: Number of packets budgeted to be processed in this iteration.
1676 *
1677 * This function comes into picture only if Receive side is being handled
1678 * through polling (called NAPI in linux). It mostly does what the normal
1679 * Rx interrupt handler does in terms of descriptor and packet processing
1680 * but not in an interrupt context. Also it will process a specified number
1681 * of packets at most in one iteration. This value is passed down by the
1682 * kernel as the function argument 'budget'.
1683 */
1684static int vxge_poll_msix(struct napi_struct *napi, int budget)
1685{
1686 struct vxge_ring *ring =
1687 container_of(napi, struct vxge_ring, napi);
1688 int budget_org = budget;
1689 ring->budget = budget;
1690
1691 vxge_hw_vpath_poll_rx(ring->handle);
1692
1693 if (ring->pkts_processed < budget_org) {
1694 napi_complete(napi);
1695 /* Re enable the Rx interrupts for the vpath */
1696 vxge_hw_channel_msix_unmask(
1697 (struct __vxge_hw_channel *)ring->handle,
1698 ring->rx_vector_no);
1699 }
1700
1701 return ring->pkts_processed;
1702}
1703
1704static int vxge_poll_inta(struct napi_struct *napi, int budget)
1705{
1706 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1707 int pkts_processed = 0;
1708 int i;
1709 int budget_org = budget;
1710 struct vxge_ring *ring;
1711
1712 struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)
1713 pci_get_drvdata(vdev->pdev);
1714
1715 for (i = 0; i < vdev->no_of_vpath; i++) {
1716 ring = &vdev->vpaths[i].ring;
1717 ring->budget = budget;
1718 vxge_hw_vpath_poll_rx(ring->handle);
1719 pkts_processed += ring->pkts_processed;
1720 budget -= ring->pkts_processed;
1721 if (budget <= 0)
1722 break;
1723 }
1724
1725 VXGE_COMPLETE_ALL_TX(vdev);
1726
1727 if (pkts_processed < budget_org) {
1728 napi_complete(napi);
1729 /* Re enable the Rx interrupts for the ring */
1730 vxge_hw_device_unmask_all(hldev);
1731 vxge_hw_device_flush_io(hldev);
1732 }
1733
1734 return pkts_processed;
1735}
1736
1737#ifdef CONFIG_NET_POLL_CONTROLLER
1738/**
1739 * vxge_netpoll - netpoll event handler entry point
1740 * @dev : pointer to the device structure.
1741 * Description:
1742 * This function will be called by upper layer to check for events on the
1743 * interface in situations where interrupts are disabled. It is used for
1744 * specific in-kernel networking tasks, such as remote consoles and kernel
1745 * debugging over the network (example netdump in RedHat).
1746 */
1747static void vxge_netpoll(struct net_device *dev)
1748{
1749 struct __vxge_hw_device *hldev;
1750 struct vxgedev *vdev;
1751
1752 vdev = (struct vxgedev *)netdev_priv(dev);
1753 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1754
1755 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1756
1757 if (pci_channel_offline(vdev->pdev))
1758 return;
1759
1760 disable_irq(dev->irq);
1761 vxge_hw_device_clear_tx_rx(hldev);
1762
1763 vxge_hw_device_clear_tx_rx(hldev);
1764 VXGE_COMPLETE_ALL_RX(vdev);
1765 VXGE_COMPLETE_ALL_TX(vdev);
1766
1767 enable_irq(dev->irq);
1768
1769 vxge_debug_entryexit(VXGE_TRACE,
1770 "%s:%d Exiting...", __func__, __LINE__);
1771 return;
1772}
1773#endif
1774
1775/* RTH configuration */
1776static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1777{
1778 enum vxge_hw_status status = VXGE_HW_OK;
1779 struct vxge_hw_rth_hash_types hash_types;
1780 u8 itable[256] = {0}; /* indirection table */
1781 u8 mtable[256] = {0}; /* CPU to vpath mapping */
1782 int index;
1783
1784 /*
1785 * Filling
1786 * - itable with bucket numbers
1787 * - mtable with bucket-to-vpath mapping
1788 */
1789 for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1790 itable[index] = index;
1791 mtable[index] = index % vdev->no_of_vpath;
1792 }
1793
1794 /* Fill RTH hash types */
1795 hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4;
1796 hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4;
1797 hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6;
1798 hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6;
1799 hash_types.hash_type_tcpipv6ex_en =
1800 vdev->config.rth_hash_type_tcpipv6ex;
1801 hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex;
1802
1803 /* set indirection table, bucket-to-vpath mapping */
1804 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1805 vdev->no_of_vpath,
1806 mtable, itable,
1807 vdev->config.rth_bkt_sz);
1808 if (status != VXGE_HW_OK) {
1809 vxge_debug_init(VXGE_ERR,
1810 "RTH indirection table configuration failed "
1811 "for vpath:%d", vdev->vpaths[0].device_id);
1812 return status;
1813 }
1814
1815 /*
1816 * Because the itable_set() method uses the active_table field
1817 * for the target virtual path the RTH config should be updated
1818 * for all VPATHs. The h/w only uses the lowest numbered VPATH
1819 * when steering frames.
1820 */
1821 for (index = 0; index < vdev->no_of_vpath; index++) {
1822 status = vxge_hw_vpath_rts_rth_set(
1823 vdev->vpaths[index].handle,
1824 vdev->config.rth_algorithm,
1825 &hash_types,
1826 vdev->config.rth_bkt_sz);
1827
1828 if (status != VXGE_HW_OK) {
1829 vxge_debug_init(VXGE_ERR,
1830 "RTH configuration failed for vpath:%d",
1831 vdev->vpaths[index].device_id);
1832 return status;
1833 }
1834 }
1835
1836 return status;
1837}
1838
1839int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1840{
1841 struct vxge_mac_addrs *new_mac_entry;
1842 u8 *mac_address = NULL;
1843
1844 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1845 return TRUE;
1846
1847 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1848 if (!new_mac_entry) {
1849 vxge_debug_mem(VXGE_ERR,
1850 "%s: memory allocation failed",
1851 VXGE_DRIVER_NAME);
1852 return FALSE;
1853 }
1854
1855 list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1856
1857 /* Copy the new mac address to the list */
1858 mac_address = (u8 *)&new_mac_entry->macaddr;
1859 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1860
1861 new_mac_entry->state = mac->state;
1862 vpath->mac_addr_cnt++;
1863
1864 /* Is this a multicast address */
1865 if (0x01 & mac->macaddr[0])
1866 vpath->mcast_addr_cnt++;
1867
1868 return TRUE;
1869}
1870
1871/* Add a mac address to DA table */
1872enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1873{
1874 enum vxge_hw_status status = VXGE_HW_OK;
1875 struct vxge_vpath *vpath;
1876 enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1877
1878 if (0x01 & mac->macaddr[0]) /* multicast address */
1879 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1880 else
1881 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1882
1883 vpath = &vdev->vpaths[mac->vpath_no];
1884 status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1885 mac->macmask, duplicate_mode);
1886 if (status != VXGE_HW_OK) {
1887 vxge_debug_init(VXGE_ERR,
1888 "DA config add entry failed for vpath:%d",
1889 vpath->device_id);
1890 } else
1891 if (FALSE == vxge_mac_list_add(vpath, mac))
1892 status = -EPERM;
1893
1894 return status;
1895}
1896
1897int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1898{
1899 struct list_head *entry, *next;
1900 u64 del_mac = 0;
1901 u8 *mac_address = (u8 *) (&del_mac);
1902
1903 /* Copy the mac address to delete from the list */
1904 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1905
1906 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1907 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1908 list_del(entry);
1909 kfree((struct vxge_mac_addrs *)entry);
1910 vpath->mac_addr_cnt--;
1911
1912 /* Is this a multicast address */
1913 if (0x01 & mac->macaddr[0])
1914 vpath->mcast_addr_cnt--;
1915 return TRUE;
1916 }
1917 }
1918
1919 return FALSE;
1920}
1921/* delete a mac address from DA table */
1922enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1923{
1924 enum vxge_hw_status status = VXGE_HW_OK;
1925 struct vxge_vpath *vpath;
1926
1927 vpath = &vdev->vpaths[mac->vpath_no];
1928 status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1929 mac->macmask);
1930 if (status != VXGE_HW_OK) {
1931 vxge_debug_init(VXGE_ERR,
1932 "DA config delete entry failed for vpath:%d",
1933 vpath->device_id);
1934 } else
1935 vxge_mac_list_del(vpath, mac);
1936 return status;
1937}
1938
1939/* list all mac addresses from DA table */
1940enum vxge_hw_status
1941static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1942 struct macInfo *mac)
1943{
1944 enum vxge_hw_status status = VXGE_HW_OK;
1945 unsigned char macmask[ETH_ALEN];
1946 unsigned char macaddr[ETH_ALEN];
1947
1948 status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1949 macaddr, macmask);
1950 if (status != VXGE_HW_OK) {
1951 vxge_debug_init(VXGE_ERR,
1952 "DA config list entry failed for vpath:%d",
1953 vpath->device_id);
1954 return status;
1955 }
1956
1957 while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1958
1959 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1960 macaddr, macmask);
1961 if (status != VXGE_HW_OK)
1962 break;
1963 }
1964
1965 return status;
1966}
1967
1968/* Store all vlan ids from the list to the vid table */
1969enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1970{
1971 enum vxge_hw_status status = VXGE_HW_OK;
1972 struct vxgedev *vdev = vpath->vdev;
1973 u16 vid;
1974
1975 if (vdev->vlgrp && vpath->is_open) {
1976
1977 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1978 if (!vlan_group_get_device(vdev->vlgrp, vid))
1979 continue;
1980 /* Add these vlan to the vid table */
1981 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1982 }
1983 }
1984
1985 return status;
1986}
1987
1988/* Store all mac addresses from the list to the DA table */
1989enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1990{
1991 enum vxge_hw_status status = VXGE_HW_OK;
1992 struct macInfo mac_info;
1993 u8 *mac_address = NULL;
1994 struct list_head *entry, *next;
1995
1996 memset(&mac_info, 0, sizeof(struct macInfo));
1997
1998 if (vpath->is_open) {
1999
2000 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2001 mac_address =
2002 (u8 *)&
2003 ((struct vxge_mac_addrs *)entry)->macaddr;
2004 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
2005 ((struct vxge_mac_addrs *)entry)->state =
2006 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
2007 /* does this mac address already exist in da table? */
2008 status = vxge_search_mac_addr_in_da_table(vpath,
2009 &mac_info);
2010 if (status != VXGE_HW_OK) {
2011 /* Add this mac address to the DA table */
2012 status = vxge_hw_vpath_mac_addr_add(
2013 vpath->handle, mac_info.macaddr,
2014 mac_info.macmask,
2015 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2016 if (status != VXGE_HW_OK) {
2017 vxge_debug_init(VXGE_ERR,
2018 "DA add entry failed for vpath:%d",
2019 vpath->device_id);
2020 ((struct vxge_mac_addrs *)entry)->state
2021 = VXGE_LL_MAC_ADDR_IN_LIST;
2022 }
2023 }
2024 }
2025 }
2026
2027 return status;
2028}
2029
2030/* reset vpaths */
2031enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2032{
2033 int i;
2034 enum vxge_hw_status status = VXGE_HW_OK;
2035
2036 for (i = 0; i < vdev->no_of_vpath; i++)
2037 if (vdev->vpaths[i].handle) {
2038 if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2039 == VXGE_HW_OK) {
2040 if (is_vxge_card_up(vdev) &&
2041 vxge_hw_vpath_recover_from_reset(
2042 vdev->vpaths[i].handle)
2043 != VXGE_HW_OK) {
2044 vxge_debug_init(VXGE_ERR,
2045 "vxge_hw_vpath_recover_"
2046 "from_reset failed for vpath: "
2047 "%d", i);
2048 return status;
2049 }
2050 } else {
2051 vxge_debug_init(VXGE_ERR,
2052 "vxge_hw_vpath_reset failed for "
2053 "vpath:%d", i);
2054 return status;
2055 }
2056 }
2057 return status;
2058}
2059
2060/* close vpaths */
2061void vxge_close_vpaths(struct vxgedev *vdev, int index)
2062{
2063 int i;
2064 for (i = index; i < vdev->no_of_vpath; i++) {
2065 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2066 vxge_hw_vpath_close(vdev->vpaths[i].handle);
2067 vdev->stats.vpaths_open--;
2068 }
2069 vdev->vpaths[i].is_open = 0;
2070 vdev->vpaths[i].handle = NULL;
2071 }
2072}
2073
2074/* open vpaths */
2075int vxge_open_vpaths(struct vxgedev *vdev)
2076{
2077 enum vxge_hw_status status;
2078 int i;
2079 u32 vp_id = 0;
2080 struct vxge_hw_vpath_attr attr;
2081
2082 for (i = 0; i < vdev->no_of_vpath; i++) {
2083 vxge_assert(vdev->vpaths[i].is_configured);
2084 attr.vp_id = vdev->vpaths[i].device_id;
2085 attr.fifo_attr.callback = vxge_xmit_compl;
2086 attr.fifo_attr.txdl_term = vxge_tx_term;
2087 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2088 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2089
2090 attr.ring_attr.callback = vxge_rx_1b_compl;
2091 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2092 attr.ring_attr.rxd_term = vxge_rx_term;
2093 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2094 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2095
2096 vdev->vpaths[i].ring.ndev = vdev->ndev;
2097 vdev->vpaths[i].ring.pdev = vdev->pdev;
2098 status = vxge_hw_vpath_open(vdev->devh, &attr,
2099 &(vdev->vpaths[i].handle));
2100 if (status == VXGE_HW_OK) {
2101 vdev->vpaths[i].fifo.handle =
2102 (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2103 vdev->vpaths[i].ring.handle =
2104 (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2105 vdev->vpaths[i].fifo.tx_steering_type =
2106 vdev->config.tx_steering_type;
2107 vdev->vpaths[i].fifo.ndev = vdev->ndev;
2108 vdev->vpaths[i].fifo.pdev = vdev->pdev;
2109 vdev->vpaths[i].fifo.indicate_max_pkts =
2110 vdev->config.fifo_indicate_max_pkts;
2111 vdev->vpaths[i].ring.rx_vector_no = 0;
2112 vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2113 vdev->vpaths[i].is_open = 1;
2114 vdev->vp_handles[i] = vdev->vpaths[i].handle;
2115 vdev->vpaths[i].ring.gro_enable =
2116 vdev->config.gro_enable;
2117 vdev->vpaths[i].ring.vlan_tag_strip =
2118 vdev->vlan_tag_strip;
2119 vdev->stats.vpaths_open++;
2120 } else {
2121 vdev->stats.vpath_open_fail++;
2122 vxge_debug_init(VXGE_ERR,
2123 "%s: vpath: %d failed to open "
2124 "with status: %d",
2125 vdev->ndev->name, vdev->vpaths[i].device_id,
2126 status);
2127 vxge_close_vpaths(vdev, 0);
2128 return -EPERM;
2129 }
2130
2131 vp_id =
2132 ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2133 vpath->vp_id;
2134 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2135 }
2136 return VXGE_HW_OK;
2137}
2138
2139/*
2140 * vxge_isr_napi
2141 * @irq: the irq of the device.
2142 * @dev_id: a void pointer to the hldev structure of the Titan device
2143 * @ptregs: pointer to the registers pushed on the stack.
2144 *
2145 * This function is the ISR handler of the device when napi is enabled. It
2146 * identifies the reason for the interrupt and calls the relevant service
2147 * routines.
2148 */
2149static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2150{
703da5a1 2151 struct net_device *dev;
a5d165b5 2152 struct __vxge_hw_device *hldev;
703da5a1
RV		 2153 u64 reason;
2154 enum vxge_hw_status status;
a5d165b5 2155 struct vxgedev *vdev = (struct vxgedev *) dev_id;;
703da5a1
RV		 2156
2157 vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2158
a5d165b5
SH		 2159 dev = vdev->ndev;
2160 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
703da5a1
RV		 2161
2162 if (pci_channel_offline(vdev->pdev))
2163 return IRQ_NONE;
2164
2165 if (unlikely(!is_vxge_card_up(vdev)))
2166 return IRQ_NONE;
2167
2168 status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2169 &reason);
2170 if (status == VXGE_HW_OK) {
2171 vxge_hw_device_mask_all(hldev);
2172
2173 if (reason &
2174 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2175 vdev->vpaths_deployed >>
2176 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2177
2178 vxge_hw_device_clear_tx_rx(hldev);
2179 napi_schedule(&vdev->napi);
2180 vxge_debug_intr(VXGE_TRACE,
2181 "%s:%d Exiting...", __func__, __LINE__);
2182 return IRQ_HANDLED;
2183 } else
2184 vxge_hw_device_unmask_all(hldev);
2185 } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2186 (status == VXGE_HW_ERR_CRITICAL) ||
2187 (status == VXGE_HW_ERR_FIFO))) {
2188 vxge_hw_device_mask_all(hldev);
2189 vxge_hw_device_flush_io(hldev);
2190 return IRQ_HANDLED;
2191 } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2192 return IRQ_HANDLED;
2193
2194 vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__);
2195 return IRQ_NONE;
2196}
2197
2198#ifdef CONFIG_PCI_MSI
2199
2200static irqreturn_t
2201vxge_tx_msix_handle(int irq, void *dev_id)
2202{
2203 struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2204
2205 VXGE_COMPLETE_VPATH_TX(fifo);
2206
2207 return IRQ_HANDLED;
2208}
2209
2210static irqreturn_t
2211vxge_rx_msix_napi_handle(int irq, void *dev_id)
2212{
2213 struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2214
2215 /* MSIX_IDX for Rx is 1 */
2216 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2217 ring->rx_vector_no);
2218
2219 napi_schedule(&ring->napi);
2220 return IRQ_HANDLED;
2221}
2222
2223static irqreturn_t
2224vxge_alarm_msix_handle(int irq, void *dev_id)
2225{
2226 int i;
2227 enum vxge_hw_status status;
2228 struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2229 struct vxgedev *vdev = vpath->vdev;
2230 int alarm_msix_id =
2231 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2232
2233 for (i = 0; i < vdev->no_of_vpath; i++) {
2234 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2235 alarm_msix_id);
2236
2237 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2238 vdev->exec_mode);
2239 if (status == VXGE_HW_OK) {
2240
2241 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2242 alarm_msix_id);
2243 continue;
2244 }
2245 vxge_debug_intr(VXGE_ERR,
2246 "%s: vxge_hw_vpath_alarm_process failed %x ",
2247 VXGE_DRIVER_NAME, status);
2248 }
2249 return IRQ_HANDLED;
2250}
2251
2252static int vxge_alloc_msix(struct vxgedev *vdev)
2253{
2254 int j, i, ret = 0;
2255 int intr_cnt = 0;
2256 int alarm_msix_id = 0, msix_intr_vect = 0;
2257 vdev->intr_cnt = 0;
2258
2259 /* Tx/Rx MSIX Vectors count */
2260 vdev->intr_cnt = vdev->no_of_vpath * 2;
2261
2262 /* Alarm MSIX Vectors count */
2263 vdev->intr_cnt++;
2264
2265 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2266 vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2267 GFP_KERNEL);
2268 if (!vdev->entries) {
2269 vxge_debug_init(VXGE_ERR,
2270 "%s: memory allocation failed",
2271 VXGE_DRIVER_NAME);
2272 return -ENOMEM;
2273 }
2274
2275 vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2276 GFP_KERNEL);
2277 if (!vdev->vxge_entries) {
2278 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2279 VXGE_DRIVER_NAME);
2280 kfree(vdev->entries);
2281 return -ENOMEM;
2282 }
2283
2284 /* Last vector in the list is used for alarm */
2285 alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2286 for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2287
2288 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2289
2290 /* Initialize the fifo vector */
2291 vdev->entries[j].entry = msix_intr_vect;
2292 vdev->vxge_entries[j].entry = msix_intr_vect;
2293 vdev->vxge_entries[j].in_use = 0;
2294 j++;
2295
2296 /* Initialize the ring vector */
2297 vdev->entries[j].entry = msix_intr_vect + 1;
2298 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2299 vdev->vxge_entries[j].in_use = 0;
2300 j++;
2301 }
2302
2303 /* Initialize the alarm vector */
2304 vdev->entries[j].entry = alarm_msix_id;
2305 vdev->vxge_entries[j].entry = alarm_msix_id;
2306 vdev->vxge_entries[j].in_use = 0;
2307
2308 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2309 /* if driver request exceeeds available irq's, request with a small
2310 * number.
2311 */
2312 if (ret > 0) {
2313 vxge_debug_init(VXGE_ERR,
2314 "%s: MSI-X enable failed for %d vectors, available: %d",
2315 VXGE_DRIVER_NAME, intr_cnt, ret);
2316 vdev->max_vpath_supported = vdev->no_of_vpath;
2317 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2318
2319 /* Reset the alarm vector setting */
2320 vdev->entries[j].entry = 0;
2321 vdev->vxge_entries[j].entry = 0;
2322
2323 /* Initialize the alarm vector with new setting */
2324 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2325 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2326 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2327
2328 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2329 if (!ret)
2330 vxge_debug_init(VXGE_ERR,
2331 "%s: MSI-X enabled for %d vectors",
2332 VXGE_DRIVER_NAME, intr_cnt);
2333 }
2334
2335 if (ret) {
2336 vxge_debug_init(VXGE_ERR,
2337 "%s: MSI-X enable failed for %d vectors, ret: %d",
2338 VXGE_DRIVER_NAME, intr_cnt, ret);
2339 kfree(vdev->entries);
2340 kfree(vdev->vxge_entries);
2341 vdev->entries = NULL;
2342 vdev->vxge_entries = NULL;
2343 return -ENODEV;
2344 }
2345 return 0;
2346}
2347
2348static int vxge_enable_msix(struct vxgedev *vdev)
2349{
2350
2351 int i, ret = 0;
2352 enum vxge_hw_status status;
2353 /* 0 - Tx, 1 - Rx */
2354 int tim_msix_id[4];
2355 int alarm_msix_id = 0, msix_intr_vect = 0;;
2356 vdev->intr_cnt = 0;
2357
2358 /* allocate msix vectors */
2359 ret = vxge_alloc_msix(vdev);
2360 if (!ret) {
2361 /* Last vector in the list is used for alarm */
2362 alarm_msix_id =
2363 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2364 for (i = 0; i < vdev->no_of_vpath; i++) {
2365
2366 /* If fifo or ring are not enabled
2367 the MSIX vector for that should be set to 0
2368 Hence initializeing this array to all 0s.
2369 */
2370 memset(tim_msix_id, 0, sizeof(tim_msix_id));
2371 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2372 tim_msix_id[0] = msix_intr_vect;
2373
2374 tim_msix_id[1] = msix_intr_vect + 1;
2375 vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2376
2377 status = vxge_hw_vpath_msix_set(
2378 vdev->vpaths[i].handle,
2379 tim_msix_id, alarm_msix_id);
2380 if (status != VXGE_HW_OK) {
2381 vxge_debug_init(VXGE_ERR,
2382 "vxge_hw_vpath_msix_set "
2383 "failed with status : %x", status);
2384 kfree(vdev->entries);
2385 kfree(vdev->vxge_entries);
2386 pci_disable_msix(vdev->pdev);
2387 return -ENODEV;
2388 }
2389 }
2390 }
2391
2392 return ret;
2393}
2394
2395static void vxge_rem_msix_isr(struct vxgedev *vdev)
2396{
2397 int intr_cnt;
2398
2399 for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2400 intr_cnt++) {
2401 if (vdev->vxge_entries[intr_cnt].in_use) {
2402 synchronize_irq(vdev->entries[intr_cnt].vector);
2403 free_irq(vdev->entries[intr_cnt].vector,
2404 vdev->vxge_entries[intr_cnt].arg);
2405 vdev->vxge_entries[intr_cnt].in_use = 0;
2406 }
2407 }
2408
2409 kfree(vdev->entries);
2410 kfree(vdev->vxge_entries);
2411 vdev->entries = NULL;
2412 vdev->vxge_entries = NULL;
2413
2414 if (vdev->config.intr_type == MSI_X)
2415 pci_disable_msix(vdev->pdev);
2416}
2417#endif
2418
2419static void vxge_rem_isr(struct vxgedev *vdev)
2420{
2421 struct __vxge_hw_device *hldev;
2422 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2423
2424#ifdef CONFIG_PCI_MSI
2425 if (vdev->config.intr_type == MSI_X) {
2426 vxge_rem_msix_isr(vdev);
2427 } else
2428#endif
2429 if (vdev->config.intr_type == INTA) {
2430 synchronize_irq(vdev->pdev->irq);
a5d165b5 2431 free_irq(vdev->pdev->irq, vdev);
703da5a1
RV		 2432 }
2433}
2434
2435static int vxge_add_isr(struct vxgedev *vdev)
2436{
2437 int ret = 0;
703da5a1
RV		 2438#ifdef CONFIG_PCI_MSI
2439 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2440 u64 function_mode = vdev->config.device_hw_info.function_mode;
2441 int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2442
2443 if (vdev->config.intr_type == MSI_X)
2444 ret = vxge_enable_msix(vdev);
2445
2446 if (ret) {
2447 vxge_debug_init(VXGE_ERR,
2448 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2449 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2450 test_and_set_bit(__VXGE_STATE_CARD_UP,
2451 &driver_config->inta_dev_open))
2452 return VXGE_HW_FAIL;
2453 else {
2454 vxge_debug_init(VXGE_ERR,
2455 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2456 vdev->config.intr_type = INTA;
2457 vxge_hw_device_set_intr_type(vdev->devh,
2458 VXGE_HW_INTR_MODE_IRQLINE);
2459 vxge_close_vpaths(vdev, 1);
2460 vdev->no_of_vpath = 1;
2461 vdev->stats.vpaths_open = 1;
2462 }
2463 }
2464
2465 if (vdev->config.intr_type == MSI_X) {
2466 for (intr_idx = 0;
2467 intr_idx < (vdev->no_of_vpath *
2468 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2469
2470 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2471 irq_req = 0;
2472
2473 switch (msix_idx) {
2474 case 0:
2475 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2476 "%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
2477 vdev->ndev->name, pci_fun, vp_idx,
2478 vdev->entries[intr_cnt].entry);
2479 ret = request_irq(
2480 vdev->entries[intr_cnt].vector,
2481 vxge_tx_msix_handle, 0,
2482 vdev->desc[intr_cnt],
2483 &vdev->vpaths[vp_idx].fifo);
2484 vdev->vxge_entries[intr_cnt].arg =
2485 &vdev->vpaths[vp_idx].fifo;
2486 irq_req = 1;
2487 break;
2488 case 1:
2489 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2490 "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2491 vdev->ndev->name, pci_fun, vp_idx,
2492 vdev->entries[intr_cnt].entry);
2493 ret = request_irq(
2494 vdev->entries[intr_cnt].vector,
2495 vxge_rx_msix_napi_handle,
2496 0,
2497 vdev->desc[intr_cnt],
2498 &vdev->vpaths[vp_idx].ring);
2499 vdev->vxge_entries[intr_cnt].arg =
2500 &vdev->vpaths[vp_idx].ring;
2501 irq_req = 1;
2502 break;
2503 }
2504
2505 if (ret) {
2506 vxge_debug_init(VXGE_ERR,
2507 "%s: MSIX - %d Registration failed",
2508 vdev->ndev->name, intr_cnt);
2509 vxge_rem_msix_isr(vdev);
2510 if ((function_mode ==
2511 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2512 test_and_set_bit(__VXGE_STATE_CARD_UP,
2513 &driver_config->inta_dev_open))
2514 return VXGE_HW_FAIL;
2515 else {
2516 vxge_hw_device_set_intr_type(
2517 vdev->devh,
2518 VXGE_HW_INTR_MODE_IRQLINE);
2519 vdev->config.intr_type = INTA;
2520 vxge_debug_init(VXGE_ERR,
2521 "%s: Defaulting to INTA"
2522 , vdev->ndev->name);
2523 vxge_close_vpaths(vdev, 1);
2524 vdev->no_of_vpath = 1;
2525 vdev->stats.vpaths_open = 1;
2526 goto INTA_MODE;
2527 }
2528 }
2529
2530 if (irq_req) {
2531 /* We requested for this msix interrupt */
2532 vdev->vxge_entries[intr_cnt].in_use = 1;
2533 vxge_hw_vpath_msix_unmask(
2534 vdev->vpaths[vp_idx].handle,
2535 intr_idx);
2536 intr_cnt++;
2537 }
2538
2539 /* Point to next vpath handler */
2540 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
2541 && (vp_idx < (vdev->no_of_vpath - 1)))
2542 vp_idx++;
2543 }
2544
2545 intr_cnt = vdev->max_vpath_supported * 2;
2546 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2547 "%s:vxge Alarm fn: %d MSI-X: %d",
2548 vdev->ndev->name, pci_fun,
2549 vdev->entries[intr_cnt].entry);
2550 /* For Alarm interrupts */
2551 ret = request_irq(vdev->entries[intr_cnt].vector,
2552 vxge_alarm_msix_handle, 0,
2553 vdev->desc[intr_cnt],
2554 &vdev->vpaths[vp_idx]);
2555 if (ret) {
2556 vxge_debug_init(VXGE_ERR,
2557 "%s: MSIX - %d Registration failed",
2558 vdev->ndev->name, intr_cnt);
2559 vxge_rem_msix_isr(vdev);
2560 if ((function_mode ==
2561 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2562 test_and_set_bit(__VXGE_STATE_CARD_UP,
2563 &driver_config->inta_dev_open))
2564 return VXGE_HW_FAIL;
2565 else {
2566 vxge_hw_device_set_intr_type(vdev->devh,
2567 VXGE_HW_INTR_MODE_IRQLINE);
2568 vdev->config.intr_type = INTA;
2569 vxge_debug_init(VXGE_ERR,
2570 "%s: Defaulting to INTA",
2571 vdev->ndev->name);
2572 vxge_close_vpaths(vdev, 1);
2573 vdev->no_of_vpath = 1;
2574 vdev->stats.vpaths_open = 1;
2575 goto INTA_MODE;
2576 }
2577 }
2578
2579 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2580 intr_idx - 2);
2581 vdev->vxge_entries[intr_cnt].in_use = 1;
2582 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2583 }
2584INTA_MODE:
2585#endif
2586 snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2587
2588 if (vdev->config.intr_type == INTA) {
2589 ret = request_irq((int) vdev->pdev->irq,
2590 vxge_isr_napi,
a5d165b5 2591 IRQF_SHARED, vdev->desc[0], vdev);
703da5a1
RV		 2592 if (ret) {
2593 vxge_debug_init(VXGE_ERR,
2594 "%s %s-%d: ISR registration failed",
2595 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2596 return -ENODEV;
2597 }
2598 vxge_debug_init(VXGE_TRACE,
2599 "new %s-%d line allocated",
2600 "IRQ", vdev->pdev->irq);
2601 }
2602
2603 return VXGE_HW_OK;
2604}
2605
2606static void vxge_poll_vp_reset(unsigned long data)
2607{
2608 struct vxgedev *vdev = (struct vxgedev *)data;
2609 int i, j = 0;
2610
2611 for (i = 0; i < vdev->no_of_vpath; i++) {
2612 if (test_bit(i, &vdev->vp_reset)) {
2613 vxge_reset_vpath(vdev, i);
2614 j++;
2615 }
2616 }
2617 if (j && (vdev->config.intr_type != MSI_X)) {
2618 vxge_hw_device_unmask_all(vdev->devh);
2619 vxge_hw_device_flush_io(vdev->devh);
2620 }
2621
2622 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2623}
2624
2625static void vxge_poll_vp_lockup(unsigned long data)
2626{
2627 struct vxgedev *vdev = (struct vxgedev *)data;
2628 int i;
2629 struct vxge_ring *ring;
2630 enum vxge_hw_status status = VXGE_HW_OK;
2631
2632 for (i = 0; i < vdev->no_of_vpath; i++) {
2633 ring = &vdev->vpaths[i].ring;
2634 /* Did this vpath received any packets */
2635 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2636 status = vxge_hw_vpath_check_leak(ring->handle);
2637
2638 /* Did it received any packets last time */
2639 if ((VXGE_HW_FAIL == status) &&
2640 (VXGE_HW_FAIL == ring->last_status)) {
2641
2642 /* schedule vpath reset */
2643 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2644
2645 /* disable interrupts for this vpath */
2646 vxge_vpath_intr_disable(vdev, i);
2647
2648 /* stop the queue for this vpath */
2649 vxge_stop_tx_queue(&vdev->vpaths[i].
2650 fifo);
2651 continue;
2652 }
2653 }
2654 }
2655 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2656 ring->last_status = status;
2657 }
2658
2659 /* Check every 1 milli second */
2660 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2661}
2662
2663/**
2664 * vxge_open
2665 * @dev: pointer to the device structure.
2666 *
2667 * This function is the open entry point of the driver. It mainly calls a
2668 * function to allocate Rx buffers and inserts them into the buffer
2669 * descriptors and then enables the Rx part of the NIC.
2670 * Return value: '0' on success and an appropriate (-)ve integer as
2671 * defined in errno.h file on failure.
2672 */
2673int
2674vxge_open(struct net_device *dev)
2675{
2676 enum vxge_hw_status status;
2677 struct vxgedev *vdev;
2678 struct __vxge_hw_device *hldev;
2679 int ret = 0;
2680 int i;
2681 u64 val64, function_mode;
2682 vxge_debug_entryexit(VXGE_TRACE,
2683 "%s: %s:%d", dev->name, __func__, __LINE__);
2684
2685 vdev = (struct vxgedev *)netdev_priv(dev);
2686 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2687 function_mode = vdev->config.device_hw_info.function_mode;
2688
2689 /* make sure you have link off by default every time Nic is
2690 * initialized */
2691 netif_carrier_off(dev);
2692
2693 /* Check for another device already opn with INTA */
2694 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2695 test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
2696 ret = -EPERM;
2697 goto out0;
2698 }
2699
2700 /* Open VPATHs */
2701 status = vxge_open_vpaths(vdev);
2702 if (status != VXGE_HW_OK) {
2703 vxge_debug_init(VXGE_ERR,
2704 "%s: fatal: Vpath open failed", vdev->ndev->name);
2705 ret = -EPERM;
2706 goto out0;
2707 }
2708
2709 vdev->mtu = dev->mtu;
2710
2711 status = vxge_add_isr(vdev);
2712 if (status != VXGE_HW_OK) {
2713 vxge_debug_init(VXGE_ERR,
2714 "%s: fatal: ISR add failed", dev->name);
2715 ret = -EPERM;
2716 goto out1;
2717 }
2718
2719
2720 if (vdev->config.intr_type != MSI_X) {
2721 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2722 vdev->config.napi_weight);
2723 napi_enable(&vdev->napi);
a5d165b5
SH		 2724 for (i = 0; i < vdev->no_of_vpath; i++)
2725 vdev->vpaths[i].ring.napi_p = &vdev->napi;
703da5a1
RV		 2726 } else {
2727 for (i = 0; i < vdev->no_of_vpath; i++) {
2728 netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2729 vxge_poll_msix, vdev->config.napi_weight);
2730 napi_enable(&vdev->vpaths[i].ring.napi);
a5d165b5
SH		 2731 vdev->vpaths[i].ring.napi_p =
2732 &vdev->vpaths[i].ring.napi;
703da5a1
RV		 2733 }
2734 }
2735
2736 /* configure RTH */
2737 if (vdev->config.rth_steering) {
2738 status = vxge_rth_configure(vdev);
2739 if (status != VXGE_HW_OK) {
2740 vxge_debug_init(VXGE_ERR,
2741 "%s: fatal: RTH configuration failed",
2742 dev->name);
2743 ret = -EPERM;
2744 goto out2;
2745 }
2746 }
2747
2748 for (i = 0; i < vdev->no_of_vpath; i++) {
2749 /* set initial mtu before enabling the device */
2750 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2751 vdev->mtu);
2752 if (status != VXGE_HW_OK) {
2753 vxge_debug_init(VXGE_ERR,
2754 "%s: fatal: can not set new MTU", dev->name);
2755 ret = -EPERM;
2756 goto out2;
2757 }
2758 }
2759
2760 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2761 vxge_debug_init(vdev->level_trace,
2762 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2763 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2764
2765 /* Reprogram the DA table with populated mac addresses */
2766 for (i = 0; i < vdev->no_of_vpath; i++) {
2767 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2768 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2769 }
2770
2771 /* Enable vpath to sniff all unicast/multicast traffic that not
2772 * addressed to them. We allow promiscous mode for PF only
2773 */
2774
2775 val64 = 0;
2776 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2777 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2778
2779 vxge_hw_mgmt_reg_write(vdev->devh,
2780 vxge_hw_mgmt_reg_type_mrpcim,
2781 0,
2782 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2783 rxmac_authorize_all_addr),
2784 val64);
2785
2786 vxge_hw_mgmt_reg_write(vdev->devh,
2787 vxge_hw_mgmt_reg_type_mrpcim,
2788 0,
2789 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2790 rxmac_authorize_all_vid),
2791 val64);
2792
2793 vxge_set_multicast(dev);
2794
2795 /* Enabling Bcast and mcast for all vpath */
2796 for (i = 0; i < vdev->no_of_vpath; i++) {
2797 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2798 if (status != VXGE_HW_OK)
2799 vxge_debug_init(VXGE_ERR,
2800 "%s : Can not enable bcast for vpath "
2801 "id %d", dev->name, i);
2802 if (vdev->config.addr_learn_en) {
2803 status =
2804 vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2805 if (status != VXGE_HW_OK)
2806 vxge_debug_init(VXGE_ERR,
2807 "%s : Can not enable mcast for vpath "
2808 "id %d", dev->name, i);
2809 }
2810 }
2811
2812 vxge_hw_device_setpause_data(vdev->devh, 0,
2813 vdev->config.tx_pause_enable,
2814 vdev->config.rx_pause_enable);
2815
2816 if (vdev->vp_reset_timer.function == NULL)
2817 vxge_os_timer(vdev->vp_reset_timer,
2818 vxge_poll_vp_reset, vdev, (HZ/2));
2819
2820 if (vdev->vp_lockup_timer.function == NULL)
2821 vxge_os_timer(vdev->vp_lockup_timer,
2822 vxge_poll_vp_lockup, vdev, (HZ/2));
2823
2824 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2825
2826 smp_wmb();
2827
2828 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2829 netif_carrier_on(vdev->ndev);
2830 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2831 vdev->stats.link_up++;
2832 }
2833
2834 vxge_hw_device_intr_enable(vdev->devh);
2835
2836 smp_wmb();
2837
2838 for (i = 0; i < vdev->no_of_vpath; i++) {
2839 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2840 smp_wmb();
2841 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2842 }
2843
2844 vxge_start_all_tx_queue(vdev);
2845 goto out0;
2846
2847out2:
2848 vxge_rem_isr(vdev);
2849
2850 /* Disable napi */
2851 if (vdev->config.intr_type != MSI_X)
2852 napi_disable(&vdev->napi);
2853 else {
2854 for (i = 0; i < vdev->no_of_vpath; i++)
2855 napi_disable(&vdev->vpaths[i].ring.napi);
2856 }
2857
2858out1:
2859 vxge_close_vpaths(vdev, 0);
2860out0:
2861 vxge_debug_entryexit(VXGE_TRACE,
2862 "%s: %s:%d Exiting...",
2863 dev->name, __func__, __LINE__);
2864 return ret;
2865}
2866
2867/* Loop throught the mac address list and delete all the entries */
2868void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2869{
2870
2871 struct list_head *entry, *next;
2872 if (list_empty(&vpath->mac_addr_list))
2873 return;
2874
2875 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2876 list_del(entry);
2877 kfree((struct vxge_mac_addrs *)entry);
2878 }
2879}
2880
2881static void vxge_napi_del_all(struct vxgedev *vdev)
2882{
2883 int i;
2884 if (vdev->config.intr_type != MSI_X)
2885 netif_napi_del(&vdev->napi);
2886 else {
2887 for (i = 0; i < vdev->no_of_vpath; i++)
2888 netif_napi_del(&vdev->vpaths[i].ring.napi);
2889 }
2890 return;
2891}
2892
2893int do_vxge_close(struct net_device *dev, int do_io)
2894{
2895 enum vxge_hw_status status;
2896 struct vxgedev *vdev;
2897 struct __vxge_hw_device *hldev;
2898 int i;
2899 u64 val64, vpath_vector;
2900 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2901 dev->name, __func__, __LINE__);
2902
2903 vdev = (struct vxgedev *)netdev_priv(dev);
2904 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2905
bd9ee680
SH		 2906 if (unlikely(!is_vxge_card_up(vdev)))
2907 return 0;
2908
703da5a1
RV		 2909 /* If vxge_handle_crit_err task is executing,
2910 * wait till it completes. */
2911 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2912 msleep(50);
2913
2914 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2915 if (do_io) {
2916 /* Put the vpath back in normal mode */
2917 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2918 status = vxge_hw_mgmt_reg_read(vdev->devh,
2919 vxge_hw_mgmt_reg_type_mrpcim,
2920 0,
2921 (ulong)offsetof(
2922 struct vxge_hw_mrpcim_reg,
2923 rts_mgr_cbasin_cfg),
2924 &val64);
2925
2926 if (status == VXGE_HW_OK) {
2927 val64 &= ~vpath_vector;
2928 status = vxge_hw_mgmt_reg_write(vdev->devh,
2929 vxge_hw_mgmt_reg_type_mrpcim,
2930 0,
2931 (ulong)offsetof(
2932 struct vxge_hw_mrpcim_reg,
2933 rts_mgr_cbasin_cfg),
2934 val64);
2935 }
2936
2937 /* Remove the function 0 from promiscous mode */
2938 vxge_hw_mgmt_reg_write(vdev->devh,
2939 vxge_hw_mgmt_reg_type_mrpcim,
2940 0,
2941 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2942 rxmac_authorize_all_addr),
2943 0);
2944
2945 vxge_hw_mgmt_reg_write(vdev->devh,
2946 vxge_hw_mgmt_reg_type_mrpcim,
2947 0,
2948 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2949 rxmac_authorize_all_vid),
2950 0);
2951
2952 smp_wmb();
2953 }
2954 del_timer_sync(&vdev->vp_lockup_timer);
2955
2956 del_timer_sync(&vdev->vp_reset_timer);
2957
2958 /* Disable napi */
2959 if (vdev->config.intr_type != MSI_X)
2960 napi_disable(&vdev->napi);
2961 else {
2962 for (i = 0; i < vdev->no_of_vpath; i++)
2963 napi_disable(&vdev->vpaths[i].ring.napi);
2964 }
2965
2966 netif_carrier_off(vdev->ndev);
2967 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2968 vxge_stop_all_tx_queue(vdev);
2969
2970 /* Note that at this point xmit() is stopped by upper layer */
2971 if (do_io)
2972 vxge_hw_device_intr_disable(vdev->devh);
2973
2974 mdelay(1000);
2975
2976 vxge_rem_isr(vdev);
2977
2978 vxge_napi_del_all(vdev);
2979
2980 if (do_io)
2981 vxge_reset_all_vpaths(vdev);
2982
2983 vxge_close_vpaths(vdev, 0);
2984
2985 vxge_debug_entryexit(VXGE_TRACE,
2986 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
2987
2988 clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
2989 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2990
2991 return 0;
2992}
2993
2994/**
2995 * vxge_close
2996 * @dev: device pointer.
2997 *
2998 * This is the stop entry point of the driver. It needs to undo exactly
2999 * whatever was done by the open entry point, thus it's usually referred to
3000 * as the close function.Among other things this function mainly stops the
3001 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3002 * Return value: '0' on success and an appropriate (-)ve integer as
3003 * defined in errno.h file on failure.
3004 */
3005int
3006vxge_close(struct net_device *dev)
3007{
3008 do_vxge_close(dev, 1);
3009 return 0;
3010}
3011
3012/**
3013 * vxge_change_mtu
3014 * @dev: net device pointer.
3015 * @new_mtu :the new MTU size for the device.
3016 *
3017 * A driver entry point to change MTU size for the device. Before changing
3018 * the MTU the device must be stopped.
3019 */
3020static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3021{
3022 struct vxgedev *vdev = netdev_priv(dev);
3023
3024 vxge_debug_entryexit(vdev->level_trace,
3025 "%s:%d", __func__, __LINE__);
3026 if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3027 vxge_debug_init(vdev->level_err,
3028 "%s: mtu size is invalid", dev->name);
3029 return -EPERM;
3030 }
3031
3032 /* check if device is down already */
3033 if (unlikely(!is_vxge_card_up(vdev))) {
3034 /* just store new value, will use later on open() */
3035 dev->mtu = new_mtu;
3036 vxge_debug_init(vdev->level_err,
3037 "%s", "device is down on MTU change");
3038 return 0;
3039 }
3040
3041 vxge_debug_init(vdev->level_trace,
3042 "trying to apply new MTU %d", new_mtu);
3043
3044 if (vxge_close(dev))
3045 return -EIO;
3046
3047 dev->mtu = new_mtu;
3048 vdev->mtu = new_mtu;
3049
3050 if (vxge_open(dev))
3051 return -EIO;
3052
3053 vxge_debug_init(vdev->level_trace,
3054 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3055
3056 vxge_debug_entryexit(vdev->level_trace,
3057 "%s:%d Exiting...", __func__, __LINE__);
3058
3059 return 0;
3060}
3061
3062/**
3063 * vxge_get_stats
3064 * @dev: pointer to the device structure
3065 *
3066 * Updates the device statistics structure. This function updates the device
3067 * statistics structure in the net_device structure and returns a pointer
3068 * to the same.
3069 */
3070static struct net_device_stats *
3071vxge_get_stats(struct net_device *dev)
3072{
3073 struct vxgedev *vdev;
3074 struct net_device_stats *net_stats;
3075 int k;
3076
3077 vdev = netdev_priv(dev);
3078
3079 net_stats = &vdev->stats.net_stats;
3080
3081 memset(net_stats, 0, sizeof(struct net_device_stats));
3082
3083 for (k = 0; k < vdev->no_of_vpath; k++) {
3084 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3085 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3086 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3087 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3088 net_stats->rx_dropped +=
3089 vdev->vpaths[k].ring.stats.rx_dropped;
3090
3091 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3092 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3093 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3094 }
3095
3096 return net_stats;
3097}
3098
3099/**
3100 * vxge_ioctl
3101 * @dev: Device pointer.
3102 * @ifr: An IOCTL specific structure, that can contain a pointer to
3103 * a proprietary structure used to pass information to the driver.
3104 * @cmd: This is used to distinguish between the different commands that
3105 * can be passed to the IOCTL functions.
3106 *
3107 * Entry point for the Ioctl.
3108 */
3109static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3110{
3111 return -EOPNOTSUPP;
3112}
3113
3114/**
3115 * vxge_tx_watchdog
3116 * @dev: pointer to net device structure
3117 *
3118 * Watchdog for transmit side.
3119 * This function is triggered if the Tx Queue is stopped
3120 * for a pre-defined amount of time when the Interface is still up.
3121 */
3122static void
3123vxge_tx_watchdog(struct net_device *dev)
3124{
3125 struct vxgedev *vdev;
3126
3127 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3128
3129 vdev = (struct vxgedev *)netdev_priv(dev);
3130
3131 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3132
3133 vxge_reset(vdev);
3134 vxge_debug_entryexit(VXGE_TRACE,
3135 "%s:%d Exiting...", __func__, __LINE__);
3136}
3137
3138/**
3139 * vxge_vlan_rx_register
3140 * @dev: net device pointer.
3141 * @grp: vlan group
3142 *
3143 * Vlan group registration
3144 */
3145static void
3146vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3147{
3148 struct vxgedev *vdev;
3149 struct vxge_vpath *vpath;
3150 int vp;
3151 u64 vid;
3152 enum vxge_hw_status status;
3153 int i;
3154
3155 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3156
3157 vdev = (struct vxgedev *)netdev_priv(dev);
3158
3159 vpath = &vdev->vpaths[0];
3160 if ((NULL == grp) && (vpath->is_open)) {
3161 /* Get the first vlan */
3162 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3163
3164 while (status == VXGE_HW_OK) {
3165
3166 /* Delete this vlan from the vid table */
3167 for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3168 vpath = &vdev->vpaths[vp];
3169 if (!vpath->is_open)
3170 continue;
3171
3172 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3173 }
3174
3175 /* Get the next vlan to be deleted */
3176 vpath = &vdev->vpaths[0];
3177 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3178 }
3179 }
3180
3181 vdev->vlgrp = grp;
3182
3183 for (i = 0; i < vdev->no_of_vpath; i++) {
3184 if (vdev->vpaths[i].is_configured)
3185 vdev->vpaths[i].ring.vlgrp = grp;
3186 }
3187
3188 vxge_debug_entryexit(VXGE_TRACE,
3189 "%s:%d Exiting...", __func__, __LINE__);
3190}
3191
3192/**
3193 * vxge_vlan_rx_add_vid
3194 * @dev: net device pointer.
3195 * @vid: vid
3196 *
3197 * Add the vlan id to the devices vlan id table
3198 */
3199static void
3200vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3201{
3202 struct vxgedev *vdev;
3203 struct vxge_vpath *vpath;
3204 int vp_id;
3205
3206 vdev = (struct vxgedev *)netdev_priv(dev);
3207
3208 /* Add these vlan to the vid table */
3209 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3210 vpath = &vdev->vpaths[vp_id];
3211 if (!vpath->is_open)
3212 continue;
3213 vxge_hw_vpath_vid_add(vpath->handle, vid);
3214 }
3215}
3216
3217/**
3218 * vxge_vlan_rx_add_vid
3219 * @dev: net device pointer.
3220 * @vid: vid
3221 *
3222 * Remove the vlan id from the device's vlan id table
3223 */
3224static void
3225vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3226{
3227 struct vxgedev *vdev;
3228 struct vxge_vpath *vpath;
3229 int vp_id;
3230
3231 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3232
3233 vdev = (struct vxgedev *)netdev_priv(dev);
3234
3235 vlan_group_set_device(vdev->vlgrp, vid, NULL);
3236
3237 /* Delete this vlan from the vid table */
3238 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3239 vpath = &vdev->vpaths[vp_id];
3240 if (!vpath->is_open)
3241 continue;
3242 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3243 }
3244 vxge_debug_entryexit(VXGE_TRACE,
3245 "%s:%d Exiting...", __func__, __LINE__);
3246}
3247
3248static const struct net_device_ops vxge_netdev_ops = {
3249 .ndo_open = vxge_open,
3250 .ndo_stop = vxge_close,
3251 .ndo_get_stats = vxge_get_stats,
3252 .ndo_start_xmit = vxge_xmit,
3253 .ndo_validate_addr = eth_validate_addr,
3254 .ndo_set_multicast_list = vxge_set_multicast,
3255
3256 .ndo_do_ioctl = vxge_ioctl,
3257
3258 .ndo_set_mac_address = vxge_set_mac_addr,
3259 .ndo_change_mtu = vxge_change_mtu,
3260 .ndo_vlan_rx_register = vxge_vlan_rx_register,
3261 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3262 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3263
3264 .ndo_tx_timeout = vxge_tx_watchdog,
3265#ifdef CONFIG_NET_POLL_CONTROLLER
3266 .ndo_poll_controller = vxge_netpoll,
3267#endif
3268};
3269
3270int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3271 struct vxge_config *config,
3272 int high_dma, int no_of_vpath,
3273 struct vxgedev **vdev_out)
3274{
3275 struct net_device *ndev;
3276 enum vxge_hw_status status = VXGE_HW_OK;
3277 struct vxgedev *vdev;
3278 int i, ret = 0, no_of_queue = 1;
3279 u64 stat;
3280
3281 *vdev_out = NULL;
3282 if (config->tx_steering_type == TX_MULTIQ_STEERING)
3283 no_of_queue = no_of_vpath;
3284
3285 ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3286 no_of_queue);
3287 if (ndev == NULL) {
3288 vxge_debug_init(
3289 vxge_hw_device_trace_level_get(hldev),
3290 "%s : device allocation failed", __func__);
3291 ret = -ENODEV;
3292 goto _out0;
3293 }
3294
3295 vxge_debug_entryexit(
3296 vxge_hw_device_trace_level_get(hldev),
3297 "%s: %s:%d Entering...",
3298 ndev->name, __func__, __LINE__);
3299
3300 vdev = netdev_priv(ndev);
3301 memset(vdev, 0, sizeof(struct vxgedev));
3302
3303 vdev->ndev = ndev;
3304 vdev->devh = hldev;
3305 vdev->pdev = hldev->pdev;
3306 memcpy(&vdev->config, config, sizeof(struct vxge_config));
3307 vdev->rx_csum = 1; /* Enable Rx CSUM by default. */
3308
3309 SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3310
3311 ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3312 NETIF_F_HW_VLAN_FILTER;
3313 /* Driver entry points */
3314 ndev->irq = vdev->pdev->irq;
3315 ndev->base_addr = (unsigned long) hldev->bar0;
3316
3317 ndev->netdev_ops = &vxge_netdev_ops;
3318
3319 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3320
3321 initialize_ethtool_ops(ndev);
3322
3323 /* Allocate memory for vpath */
3324 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3325 no_of_vpath, GFP_KERNEL);
3326 if (!vdev->vpaths) {
3327 vxge_debug_init(VXGE_ERR,
3328 "%s: vpath memory allocation failed",
3329 vdev->ndev->name);
3330 ret = -ENODEV;
3331 goto _out1;
3332 }
3333
3334 ndev->features |= NETIF_F_SG;
3335
3336 ndev->features |= NETIF_F_HW_CSUM;
3337 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3338 "%s : checksuming enabled", __func__);
3339
3340 if (high_dma) {
3341 ndev->features |= NETIF_F_HIGHDMA;
3342 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3343 "%s : using High DMA", __func__);
3344 }
3345
3346 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3347
3348 if (vdev->config.gro_enable)
3349 ndev->features |= NETIF_F_GRO;
3350
3351 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3352 ndev->real_num_tx_queues = no_of_vpath;
3353
3354#ifdef NETIF_F_LLTX
3355 ndev->features |= NETIF_F_LLTX;
3356#endif
3357
3358 for (i = 0; i < no_of_vpath; i++)
3359 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3360
3361 if (register_netdev(ndev)) {
3362 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3363 "%s: %s : device registration failed!",
3364 ndev->name, __func__);
3365 ret = -ENODEV;
3366 goto _out2;
3367 }
3368
3369 /* Set the factory defined MAC address initially */
3370 ndev->addr_len = ETH_ALEN;
3371
3372 /* Make Link state as off at this point, when the Link change
3373 * interrupt comes the state will be automatically changed to
3374 * the right state.
3375 */
3376 netif_carrier_off(ndev);
3377
3378 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3379 "%s: Ethernet device registered",
3380 ndev->name);
3381
3382 *vdev_out = vdev;
3383
3384 /* Resetting the Device stats */
3385 status = vxge_hw_mrpcim_stats_access(
3386 hldev,
3387 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3388 0,
3389 0,
3390 &stat);
3391
3392 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3393 vxge_debug_init(
3394 vxge_hw_device_trace_level_get(hldev),
3395 "%s: device stats clear returns"
3396 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3397
3398 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3399 "%s: %s:%d Exiting...",
3400 ndev->name, __func__, __LINE__);
3401
3402 return ret;
3403_out2:
3404 kfree(vdev->vpaths);
3405_out1:
3406 free_netdev(ndev);
3407_out0:
3408 return ret;
3409}
3410
3411/*
3412 * vxge_device_unregister
3413 *
3414 * This function will unregister and free network device
3415 */
3416void
3417vxge_device_unregister(struct __vxge_hw_device *hldev)
3418{
3419 struct vxgedev *vdev;
3420 struct net_device *dev;
3421 char buf[IFNAMSIZ];
3422#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3423 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3424 u32 level_trace;
3425#endif
3426
3427 dev = hldev->ndev;
3428 vdev = netdev_priv(dev);
3429#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3430 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3431 level_trace = vdev->level_trace;
3432#endif
3433 vxge_debug_entryexit(level_trace,
3434 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3435
3436 memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3437
3438 /* in 2.6 will call stop() if device is up */
3439 unregister_netdev(dev);
3440
3441 flush_scheduled_work();
3442
3443 vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3444 vxge_debug_entryexit(level_trace,
3445 "%s: %s:%d Exiting...", buf, __func__, __LINE__);
3446}
3447
3448/*
3449 * vxge_callback_crit_err
3450 *
3451 * This function is called by the alarm handler in interrupt context.
3452 * Driver must analyze it based on the event type.
3453 */
3454static void
3455vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3456 enum vxge_hw_event type, u64 vp_id)
3457{
3458 struct net_device *dev = hldev->ndev;
3459 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3460 int vpath_idx;
3461
3462 vxge_debug_entryexit(vdev->level_trace,
3463 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3464
3465 /* Note: This event type should be used for device wide
3466 * indications only - Serious errors, Slot freeze and critical errors
3467 */
3468 vdev->cric_err_event = type;
3469
3470 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3471 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3472 break;
3473
3474 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3475 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3476 vxge_debug_init(VXGE_ERR,
3477 "%s: Slot is frozen", vdev->ndev->name);
3478 } else if (type == VXGE_HW_EVENT_SERR) {
3479 vxge_debug_init(VXGE_ERR,
3480 "%s: Encountered Serious Error",
3481 vdev->ndev->name);
3482 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3483 vxge_debug_init(VXGE_ERR,
3484 "%s: Encountered Critical Error",
3485 vdev->ndev->name);
3486 }
3487
3488 if ((type == VXGE_HW_EVENT_SERR) ||
3489 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3490 if (unlikely(vdev->exec_mode))
3491 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3492 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3493 vxge_hw_device_mask_all(hldev);
3494 if (unlikely(vdev->exec_mode))
3495 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3496 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3497 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3498
3499 if (unlikely(vdev->exec_mode))
3500 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3501 else {
3502 /* check if this vpath is already set for reset */
3503 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3504
3505 /* disable interrupts for this vpath */
3506 vxge_vpath_intr_disable(vdev, vpath_idx);
3507
3508 /* stop the queue for this vpath */
3509 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3510 fifo);
3511 }
3512 }
3513 }
3514
3515 vxge_debug_entryexit(vdev->level_trace,
3516 "%s: %s:%d Exiting...",
3517 vdev->ndev->name, __func__, __LINE__);
3518}
3519
3520static void verify_bandwidth(void)
3521{
3522 int i, band_width, total = 0, equal_priority = 0;
3523
3524 /* 1. If user enters 0 for some fifo, give equal priority to all */
3525 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3526 if (bw_percentage[i] == 0) {
3527 equal_priority = 1;
3528 break;
3529 }
3530 }
3531
3532 if (!equal_priority) {
3533 /* 2. If sum exceeds 100, give equal priority to all */
3534 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3535 if (bw_percentage[i] == 0xFF)
3536 break;
3537
3538 total += bw_percentage[i];
3539 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3540 equal_priority = 1;
3541 break;
3542 }
3543 }
3544 }
3545
3546 if (!equal_priority) {
3547 /* Is all the bandwidth consumed? */
3548 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3549 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3550 /* Split rest of bw equally among next VPs*/
3551 band_width =
3552 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3553 (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3554 if (band_width < 2) /* min of 2% */
3555 equal_priority = 1;
3556 else {
3557 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3558 i++)
3559 bw_percentage[i] =
3560 band_width;
3561 }
3562 }
3563 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3564 equal_priority = 1;
3565 }
3566
3567 if (equal_priority) {
3568 vxge_debug_init(VXGE_ERR,
3569 "%s: Assigning equal bandwidth to all the vpaths",
3570 VXGE_DRIVER_NAME);
3571 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3572 VXGE_HW_MAX_VIRTUAL_PATHS;
3573 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3574 bw_percentage[i] = bw_percentage[0];
3575 }
3576
3577 return;
3578}
3579
3580/*
3581 * Vpath configuration
3582 */
3583static int __devinit vxge_config_vpaths(
3584 struct vxge_hw_device_config *device_config,
3585 u64 vpath_mask, struct vxge_config *config_param)
3586{
3587 int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3588 u32 txdl_size, txdl_per_memblock;
3589
3590 temp = driver_config->vpath_per_dev;
3591 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3592 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3593 /* No more CPU. Return vpath number as zero.*/
3594 if (driver_config->g_no_cpus == -1)
3595 return 0;
3596
3597 if (!driver_config->g_no_cpus)
3598 driver_config->g_no_cpus = num_online_cpus();
3599
3600 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3601 if (!driver_config->vpath_per_dev)
3602 driver_config->vpath_per_dev = 1;
3603
3604 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3605 if (!vxge_bVALn(vpath_mask, i, 1))
3606 continue;
3607 else
3608 default_no_vpath++;
3609 if (default_no_vpath < driver_config->vpath_per_dev)
3610 driver_config->vpath_per_dev = default_no_vpath;
3611
3612 driver_config->g_no_cpus = driver_config->g_no_cpus -
3613 (driver_config->vpath_per_dev * 2);
3614 if (driver_config->g_no_cpus <= 0)
3615 driver_config->g_no_cpus = -1;
3616 }
3617
3618 if (driver_config->vpath_per_dev == 1) {
3619 vxge_debug_ll_config(VXGE_TRACE,
3620 "%s: Disable tx and rx steering, "
3621 "as single vpath is configured", VXGE_DRIVER_NAME);
3622 config_param->rth_steering = NO_STEERING;
3623 config_param->tx_steering_type = NO_STEERING;
3624 device_config->rth_en = 0;
3625 }
3626
3627 /* configure bandwidth */
3628 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3629 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3630
3631 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3632 device_config->vp_config[i].vp_id = i;
3633 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3634 if (no_of_vpaths < driver_config->vpath_per_dev) {
3635 if (!vxge_bVALn(vpath_mask, i, 1)) {
3636 vxge_debug_ll_config(VXGE_TRACE,
3637 "%s: vpath: %d is not available",
3638 VXGE_DRIVER_NAME, i);
3639 continue;
3640 } else {
3641 vxge_debug_ll_config(VXGE_TRACE,
3642 "%s: vpath: %d available",
3643 VXGE_DRIVER_NAME, i);
3644 no_of_vpaths++;
3645 }
3646 } else {
3647 vxge_debug_ll_config(VXGE_TRACE,
3648 "%s: vpath: %d is not configured, "
3649 "max_config_vpath exceeded",
3650 VXGE_DRIVER_NAME, i);
3651 break;
3652 }
3653
3654 /* Configure Tx fifo's */
3655 device_config->vp_config[i].fifo.enable =
3656 VXGE_HW_FIFO_ENABLE;
3657 device_config->vp_config[i].fifo.max_frags =
3658 MAX_SKB_FRAGS;
3659 device_config->vp_config[i].fifo.memblock_size =
3660 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3661
3662 txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
3663 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3664
3665 device_config->vp_config[i].fifo.fifo_blocks =
3666 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3667
3668 device_config->vp_config[i].fifo.intr =
3669 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3670
3671 /* Configure tti properties */
3672 device_config->vp_config[i].tti.intr_enable =
3673 VXGE_HW_TIM_INTR_ENABLE;
3674
3675 device_config->vp_config[i].tti.btimer_val =
3676 (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3677
3678 device_config->vp_config[i].tti.timer_ac_en =
3679 VXGE_HW_TIM_TIMER_AC_ENABLE;
3680
3681 /* For msi-x with napi (each vector
3682 has a handler of its own) -
3683 Set CI to OFF for all vpaths */
3684 device_config->vp_config[i].tti.timer_ci_en =
3685 VXGE_HW_TIM_TIMER_CI_DISABLE;
3686
3687 device_config->vp_config[i].tti.timer_ri_en =
3688 VXGE_HW_TIM_TIMER_RI_DISABLE;
3689
3690 device_config->vp_config[i].tti.util_sel =
3691 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3692
3693 device_config->vp_config[i].tti.ltimer_val =
3694 (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3695
3696 device_config->vp_config[i].tti.rtimer_val =
3697 (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3698
3699 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3700 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3701 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3702 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3703 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3704 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3705 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3706
3707 /* Configure Rx rings */
3708 device_config->vp_config[i].ring.enable =
3709 VXGE_HW_RING_ENABLE;
3710
3711 device_config->vp_config[i].ring.ring_blocks =
3712 VXGE_HW_DEF_RING_BLOCKS;
3713 device_config->vp_config[i].ring.buffer_mode =
3714 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3715 device_config->vp_config[i].ring.rxds_limit =
3716 VXGE_HW_DEF_RING_RXDS_LIMIT;
3717 device_config->vp_config[i].ring.scatter_mode =
3718 VXGE_HW_RING_SCATTER_MODE_A;
3719
3720 /* Configure rti properties */
3721 device_config->vp_config[i].rti.intr_enable =
3722 VXGE_HW_TIM_INTR_ENABLE;
3723
3724 device_config->vp_config[i].rti.btimer_val =
3725 (VXGE_RTI_BTIMER_VAL * 1000)/272;
3726
3727 device_config->vp_config[i].rti.timer_ac_en =
3728 VXGE_HW_TIM_TIMER_AC_ENABLE;
3729
3730 device_config->vp_config[i].rti.timer_ci_en =
3731 VXGE_HW_TIM_TIMER_CI_DISABLE;
3732
3733 device_config->vp_config[i].rti.timer_ri_en =
3734 VXGE_HW_TIM_TIMER_RI_DISABLE;
3735
3736 device_config->vp_config[i].rti.util_sel =
3737 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3738
3739 device_config->vp_config[i].rti.urange_a =
3740 RTI_RX_URANGE_A;
3741 device_config->vp_config[i].rti.urange_b =
3742 RTI_RX_URANGE_B;
3743 device_config->vp_config[i].rti.urange_c =
3744 RTI_RX_URANGE_C;
3745 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3746 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3747 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3748 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3749
3750 device_config->vp_config[i].rti.rtimer_val =
3751 (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3752
3753 device_config->vp_config[i].rti.ltimer_val =
3754 (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3755
3756 device_config->vp_config[i].rpa_strip_vlan_tag =
3757 vlan_tag_strip;
3758 }
3759
3760 driver_config->vpath_per_dev = temp;
3761 return no_of_vpaths;
3762}
3763
3764/* initialize device configuratrions */
3765static void __devinit vxge_device_config_init(
3766 struct vxge_hw_device_config *device_config,
3767 int *intr_type)
3768{
3769 /* Used for CQRQ/SRQ. */
3770 device_config->dma_blockpool_initial =
3771 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3772
3773 device_config->dma_blockpool_max =
3774 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3775
3776 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3777 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3778
3779#ifndef CONFIG_PCI_MSI
3780 vxge_debug_init(VXGE_ERR,
3781 "%s: This Kernel does not support "
3782 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3783 *intr_type = INTA;
3784#endif
3785
3786 /* Configure whether MSI-X or IRQL. */
3787 switch (*intr_type) {
3788 case INTA:
3789 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3790 break;
3791
3792 case MSI_X:
3793 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3794 break;
3795 }
3796 /* Timer period between device poll */
3797 device_config->device_poll_millis = VXGE_TIMER_DELAY;
3798
3799 /* Configure mac based steering. */
3800 device_config->rts_mac_en = addr_learn_en;
3801
3802 /* Configure Vpaths */
3803 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3804
3805 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3806 __func__);
3807 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3808 device_config->dma_blockpool_initial);
3809 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3810 device_config->dma_blockpool_max);
3811 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3812 device_config->intr_mode);
3813 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3814 device_config->device_poll_millis);
3815 vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3816 device_config->rts_mac_en);
3817 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3818 device_config->rth_en);
3819 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3820 device_config->rth_it_type);
3821}
3822
3823static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3824{
3825 int i;
3826
3827 vxge_debug_init(VXGE_TRACE,
3828 "%s: %d Vpath(s) opened",
3829 vdev->ndev->name, vdev->no_of_vpath);
3830
3831 switch (vdev->config.intr_type) {
3832 case INTA:
3833 vxge_debug_init(VXGE_TRACE,
3834 "%s: Interrupt type INTA", vdev->ndev->name);
3835 break;
3836
3837 case MSI_X:
3838 vxge_debug_init(VXGE_TRACE,
3839 "%s: Interrupt type MSI-X", vdev->ndev->name);
3840 break;
3841 }
3842
3843 if (vdev->config.rth_steering) {
3844 vxge_debug_init(VXGE_TRACE,
3845 "%s: RTH steering enabled for TCP_IPV4",
3846 vdev->ndev->name);
3847 } else {
3848 vxge_debug_init(VXGE_TRACE,
3849 "%s: RTH steering disabled", vdev->ndev->name);
3850 }
3851
3852 switch (vdev->config.tx_steering_type) {
3853 case NO_STEERING:
3854 vxge_debug_init(VXGE_TRACE,
3855 "%s: Tx steering disabled", vdev->ndev->name);
3856 break;
3857 case TX_PRIORITY_STEERING:
3858 vxge_debug_init(VXGE_TRACE,
3859 "%s: Unsupported tx steering option",
3860 vdev->ndev->name);
3861 vxge_debug_init(VXGE_TRACE,
3862 "%s: Tx steering disabled", vdev->ndev->name);
3863 vdev->config.tx_steering_type = 0;
3864 break;
3865 case TX_VLAN_STEERING:
3866 vxge_debug_init(VXGE_TRACE,
3867 "%s: Unsupported tx steering option",
3868 vdev->ndev->name);
3869 vxge_debug_init(VXGE_TRACE,
3870 "%s: Tx steering disabled", vdev->ndev->name);
3871 vdev->config.tx_steering_type = 0;
3872 break;
3873 case TX_MULTIQ_STEERING:
3874 vxge_debug_init(VXGE_TRACE,
3875 "%s: Tx multiqueue steering enabled",
3876 vdev->ndev->name);
3877 break;
3878 case TX_PORT_STEERING:
3879 vxge_debug_init(VXGE_TRACE,
3880 "%s: Tx port steering enabled",
3881 vdev->ndev->name);
3882 break;
3883 default:
3884 vxge_debug_init(VXGE_ERR,
3885 "%s: Unsupported tx steering type",
3886 vdev->ndev->name);
3887 vxge_debug_init(VXGE_TRACE,
3888 "%s: Tx steering disabled", vdev->ndev->name);
3889 vdev->config.tx_steering_type = 0;
3890 }
3891
3892 if (vdev->config.gro_enable) {
3893 vxge_debug_init(VXGE_ERR,
3894 "%s: Generic receive offload enabled",
3895 vdev->ndev->name);
3896 } else
3897 vxge_debug_init(VXGE_TRACE,
3898 "%s: Generic receive offload disabled",
3899 vdev->ndev->name);
3900
3901 if (vdev->config.addr_learn_en)
3902 vxge_debug_init(VXGE_TRACE,
3903 "%s: MAC Address learning enabled", vdev->ndev->name);
3904
3905 vxge_debug_init(VXGE_TRACE,
3906 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3907
3908 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3909 if (!vxge_bVALn(vpath_mask, i, 1))
3910 continue;
3911 vxge_debug_ll_config(VXGE_TRACE,
3912 "%s: MTU size - %d", vdev->ndev->name,
3913 ((struct __vxge_hw_device *)(vdev->devh))->
3914 config.vp_config[i].mtu);
3915 vxge_debug_init(VXGE_TRACE,
3916 "%s: VLAN tag stripping %s", vdev->ndev->name,
3917 ((struct __vxge_hw_device *)(vdev->devh))->
3918 config.vp_config[i].rpa_strip_vlan_tag
3919 ? "Enabled" : "Disabled");
3920 vxge_debug_init(VXGE_TRACE,
3921 "%s: Ring blocks : %d", vdev->ndev->name,
3922 ((struct __vxge_hw_device *)(vdev->devh))->
3923 config.vp_config[i].ring.ring_blocks);
3924 vxge_debug_init(VXGE_TRACE,
3925 "%s: Fifo blocks : %d", vdev->ndev->name,
3926 ((struct __vxge_hw_device *)(vdev->devh))->
3927 config.vp_config[i].fifo.fifo_blocks);
3928 vxge_debug_ll_config(VXGE_TRACE,
3929 "%s: Max frags : %d", vdev->ndev->name,
3930 ((struct __vxge_hw_device *)(vdev->devh))->
3931 config.vp_config[i].fifo.max_frags);
3932 break;
3933 }
3934}
3935
3936#ifdef CONFIG_PM
3937/**
3938 * vxge_pm_suspend - vxge power management suspend entry point
3939 *
3940 */
3941static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3942{
3943 return -ENOSYS;
3944}
3945/**
3946 * vxge_pm_resume - vxge power management resume entry point
3947 *
3948 */
3949static int vxge_pm_resume(struct pci_dev *pdev)
3950{
3951 return -ENOSYS;
3952}
3953
3954#endif
3955
3956/**
3957 * vxge_io_error_detected - called when PCI error is detected
3958 * @pdev: Pointer to PCI device
3959 * @state: The current pci connection state
3960 *
3961 * This function is called after a PCI bus error affecting
3962 * this device has been detected.
3963 */
3964static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3965 pci_channel_state_t state)
3966{
3967 struct __vxge_hw_device *hldev =
3968 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3969 struct net_device *netdev = hldev->ndev;
3970
3971 netif_device_detach(netdev);
3972
e33b992d
DN		 3973 if (state == pci_channel_io_perm_failure)
3974 return PCI_ERS_RESULT_DISCONNECT;
3975
703da5a1
RV		 3976 if (netif_running(netdev)) {
3977 /* Bring down the card, while avoiding PCI I/O */
3978 do_vxge_close(netdev, 0);
3979 }
3980
3981 pci_disable_device(pdev);
3982
3983 return PCI_ERS_RESULT_NEED_RESET;
3984}
3985
3986/**
3987 * vxge_io_slot_reset - called after the pci bus has been reset.
3988 * @pdev: Pointer to PCI device
3989 *
3990 * Restart the card from scratch, as if from a cold-boot.
3991 * At this point, the card has exprienced a hard reset,
3992 * followed by fixups by BIOS, and has its config space
3993 * set up identically to what it was at cold boot.
3994 */
3995static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3996{
3997 struct __vxge_hw_device *hldev =
3998 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3999 struct net_device *netdev = hldev->ndev;
4000
4001 struct vxgedev *vdev = netdev_priv(netdev);
4002
4003 if (pci_enable_device(pdev)) {
4004 printk(KERN_ERR "%s: "
4005 "Cannot re-enable device after reset\n",
4006 VXGE_DRIVER_NAME);
4007 return PCI_ERS_RESULT_DISCONNECT;
4008 }
4009
4010 pci_set_master(pdev);
4011 vxge_reset(vdev);
4012
4013 return PCI_ERS_RESULT_RECOVERED;
4014}
4015
4016/**
4017 * vxge_io_resume - called when traffic can start flowing again.
4018 * @pdev: Pointer to PCI device
4019 *
4020 * This callback is called when the error recovery driver tells
4021 * us that its OK to resume normal operation.
4022 */
4023static void vxge_io_resume(struct pci_dev *pdev)
4024{
4025 struct __vxge_hw_device *hldev =
4026 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4027 struct net_device *netdev = hldev->ndev;
4028
4029 if (netif_running(netdev)) {
4030 if (vxge_open(netdev)) {
4031 printk(KERN_ERR "%s: "
4032 "Can't bring device back up after reset\n",
4033 VXGE_DRIVER_NAME);
4034 return;
4035 }
4036 }
4037
4038 netif_device_attach(netdev);
4039}
4040
4041/**
4042 * vxge_probe
4043 * @pdev : structure containing the PCI related information of the device.
4044 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4045 * Description:
4046 * This function is called when a new PCI device gets detected and initializes
4047 * it.
4048 * Return value:
4049 * returns 0 on success and negative on failure.
4050 *
4051 */
4052static int __devinit
4053vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4054{
4055 struct __vxge_hw_device *hldev;
4056 enum vxge_hw_status status;
4057 int ret;
4058 int high_dma = 0;
4059 u64 vpath_mask = 0;
4060 struct vxgedev *vdev;
4061 struct vxge_config ll_config;
4062 struct vxge_hw_device_config *device_config = NULL;
4063 struct vxge_hw_device_attr attr;
4064 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4065 u8 *macaddr;
4066 struct vxge_mac_addrs *entry;
4067 static int bus = -1, device = -1;
4068 u8 new_device = 0;
4069
4070 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4071 attr.pdev = pdev;
4072
4073 if (bus != pdev->bus->number)
4074 new_device = 1;
4075 if (device != PCI_SLOT(pdev->devfn))
4076 new_device = 1;
4077
4078 bus = pdev->bus->number;
4079 device = PCI_SLOT(pdev->devfn);
4080
4081 if (new_device) {
4082 if (driver_config->config_dev_cnt &&
4083 (driver_config->config_dev_cnt !=
4084 driver_config->total_dev_cnt))
4085 vxge_debug_init(VXGE_ERR,
4086 "%s: Configured %d of %d devices",
4087 VXGE_DRIVER_NAME,
4088 driver_config->config_dev_cnt,
4089 driver_config->total_dev_cnt);
4090 driver_config->config_dev_cnt = 0;
4091 driver_config->total_dev_cnt = 0;
4092 driver_config->g_no_cpus = 0;
4093 driver_config->vpath_per_dev = max_config_vpath;
4094 }
4095
4096 driver_config->total_dev_cnt++;
4097 if (++driver_config->config_dev_cnt > max_config_dev) {
4098 ret = 0;
4099 goto _exit0;
4100 }
4101
4102 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4103 GFP_KERNEL);
4104 if (!device_config) {
4105 ret = -ENOMEM;
4106 vxge_debug_init(VXGE_ERR,
4107 "device_config : malloc failed %s %d",
4108 __FILE__, __LINE__);
4109 goto _exit0;
4110 }
4111
4112 memset(&ll_config, 0, sizeof(struct vxge_config));
4113 ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4114 ll_config.intr_type = MSI_X;
4115 ll_config.napi_weight = NEW_NAPI_WEIGHT;
4116 ll_config.rth_steering = RTH_STEERING;
4117
4118 /* get the default configuration parameters */
4119 vxge_hw_device_config_default_get(device_config);
4120
4121 /* initialize configuration parameters */
4122 vxge_device_config_init(device_config, &ll_config.intr_type);
4123
4124 ret = pci_enable_device(pdev);
4125 if (ret) {
4126 vxge_debug_init(VXGE_ERR,
4127 "%s : can not enable PCI device", __func__);
4128 goto _exit0;
4129 }
4130
4131 if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
4132 vxge_debug_ll_config(VXGE_TRACE,
4133 "%s : using 64bit DMA", __func__);
4134
4135 high_dma = 1;
4136
4137 if (pci_set_consistent_dma_mask(pdev,
4138 0xffffffffffffffffULL)) {
4139 vxge_debug_init(VXGE_ERR,
4140 "%s : unable to obtain 64bit DMA for "
4141 "consistent allocations", __func__);
4142 ret = -ENOMEM;
4143 goto _exit1;
4144 }
4145 } else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
4146 vxge_debug_ll_config(VXGE_TRACE,
4147 "%s : using 32bit DMA", __func__);
4148 } else {
4149 ret = -ENOMEM;
4150 goto _exit1;
4151 }
4152
4153 if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4154 vxge_debug_init(VXGE_ERR,
4155 "%s : request regions failed", __func__);
4156 ret = -ENODEV;
4157 goto _exit1;
4158 }
4159
4160 pci_set_master(pdev);
4161
4162 attr.bar0 = pci_ioremap_bar(pdev, 0);
4163 if (!attr.bar0) {
4164 vxge_debug_init(VXGE_ERR,
4165 "%s : cannot remap io memory bar0", __func__);
4166 ret = -ENODEV;
4167 goto _exit2;
4168 }
4169 vxge_debug_ll_config(VXGE_TRACE,
4170 "pci ioremap bar0: %p:0x%llx",
4171 attr.bar0,
4172 (unsigned long long)pci_resource_start(pdev, 0));
4173
703da5a1
RV		 4174 status = vxge_hw_device_hw_info_get(attr.bar0,
4175 &ll_config.device_hw_info);
4176 if (status != VXGE_HW_OK) {
4177 vxge_debug_init(VXGE_ERR,
4178 "%s: Reading of hardware info failed."
4179 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4180 ret = -EINVAL;
7975d1ee 4181 goto _exit3;
703da5a1
RV		 4182 }
4183
4184 if (ll_config.device_hw_info.fw_version.major !=
22fa125e 4185 VXGE_DRIVER_FW_VERSION_MAJOR) {
703da5a1 4186 vxge_debug_init(VXGE_ERR,
22fa125e
SH		 4187 "%s: Incorrect firmware version."
4188 "Please upgrade the firmware to version 1.x.x",
4189 VXGE_DRIVER_NAME);
703da5a1 4190 ret = -EINVAL;
7975d1ee 4191 goto _exit3;
703da5a1
RV		 4192 }
4193
4194 vpath_mask = ll_config.device_hw_info.vpath_mask;
4195 if (vpath_mask == 0) {
4196 vxge_debug_ll_config(VXGE_TRACE,
4197 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4198 ret = -EINVAL;
7975d1ee 4199 goto _exit3;
703da5a1
RV		 4200 }
4201
4202 vxge_debug_ll_config(VXGE_TRACE,
4203 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4204 (unsigned long long)vpath_mask);
4205
4206 /* Check how many vpaths are available */
4207 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4208 if (!((vpath_mask) & vxge_mBIT(i)))
4209 continue;
4210 max_vpath_supported++;
4211 }
4212
5dbc9011
SS		 4213 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4214 if ((VXGE_HW_FUNCTION_MODE_SRIOV ==
4215 ll_config.device_hw_info.function_mode) &&
4216 (max_config_dev > 1) && (pdev->is_physfn)) {
4217 ret = pci_enable_sriov(pdev, max_config_dev - 1);
4218 if (ret)
4219 vxge_debug_ll_config(VXGE_ERR,
4220 "Failed to enable SRIOV: %d \n", ret);
4221 }
4222
703da5a1
RV		 4223 /*
4224 * Configure vpaths and get driver configured number of vpaths
4225 * which is less than or equal to the maximum vpaths per function.
4226 */
4227 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4228 if (!no_of_vpath) {
4229 vxge_debug_ll_config(VXGE_ERR,
4230 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4231 ret = 0;
7975d1ee 4232 goto _exit3;
703da5a1
RV		 4233 }
4234
4235 /* Setting driver callbacks */
4236 attr.uld_callbacks.link_up = vxge_callback_link_up;
4237 attr.uld_callbacks.link_down = vxge_callback_link_down;
4238 attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4239
4240 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4241 if (status != VXGE_HW_OK) {
4242 vxge_debug_init(VXGE_ERR,
4243 "Failed to initialize device (%d)", status);
4244 ret = -EINVAL;
7975d1ee 4245 goto _exit3;
703da5a1
RV		 4246 }
4247
4248 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4249
4250 /* set private device info */
4251 pci_set_drvdata(pdev, hldev);
4252
4253 ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4254 ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4255 ll_config.addr_learn_en = addr_learn_en;
4256 ll_config.rth_algorithm = RTH_ALG_JENKINS;
4257 ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4258 ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4259 ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4260 ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4261 ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4262 ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4263 ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4264 ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4265 ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4266
4267 if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4268 &vdev)) {
4269 ret = -EINVAL;
7975d1ee 4270 goto _exit4;
703da5a1
RV		 4271 }
4272
4273 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4274 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4275 vxge_hw_device_trace_level_get(hldev));
4276
4277 /* set private HW device info */
4278 hldev->ndev = vdev->ndev;
4279 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4280 vdev->bar0 = attr.bar0;
703da5a1
RV		 4281 vdev->max_vpath_supported = max_vpath_supported;
4282 vdev->no_of_vpath = no_of_vpath;
4283
4284 /* Virtual Path count */
4285 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4286 if (!vxge_bVALn(vpath_mask, i, 1))
4287 continue;
4288 if (j >= vdev->no_of_vpath)
4289 break;
4290
4291 vdev->vpaths[j].is_configured = 1;
4292 vdev->vpaths[j].device_id = i;
4293 vdev->vpaths[j].fifo.driver_id = j;
4294 vdev->vpaths[j].ring.driver_id = j;
4295 vdev->vpaths[j].vdev = vdev;
4296 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4297 memcpy((u8 *)vdev->vpaths[j].macaddr,
4298 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4299 ETH_ALEN);
4300
4301 /* Initialize the mac address list header */
4302 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4303
4304 vdev->vpaths[j].mac_addr_cnt = 0;
4305 vdev->vpaths[j].mcast_addr_cnt = 0;
4306 j++;
4307 }
4308 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4309 vdev->max_config_port = max_config_port;
4310
4311 vdev->vlan_tag_strip = vlan_tag_strip;
4312
4313 /* map the hashing selector table to the configured vpaths */
4314 for (i = 0; i < vdev->no_of_vpath; i++)
4315 vdev->vpath_selector[i] = vpath_selector[i];
4316
4317 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4318
4319 ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4320 ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4321 ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4322
4323 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4324 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4325
4326 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4327 vdev->ndev->name, ll_config.device_hw_info.part_number);
4328
4329 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4330 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4331
4332 vxge_debug_init(VXGE_TRACE,
4333 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4334 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4335 macaddr[3], macaddr[4], macaddr[5]);
4336
4337 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4338 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4339
4340 vxge_debug_init(VXGE_TRACE,
4341 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4342 ll_config.device_hw_info.fw_version.version,
4343 ll_config.device_hw_info.fw_date.date);
4344
0a25bdc6
SH		 4345 if (new_device) {
4346 switch (ll_config.device_hw_info.function_mode) {
4347 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4348 vxge_debug_init(VXGE_TRACE,
4349 "%s: Single Function Mode Enabled", vdev->ndev->name);
4350 break;
4351 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4352 vxge_debug_init(VXGE_TRACE,
4353 "%s: Multi Function Mode Enabled", vdev->ndev->name);
4354 break;
4355 case VXGE_HW_FUNCTION_MODE_SRIOV:
4356 vxge_debug_init(VXGE_TRACE,
4357 "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4358 break;
4359 case VXGE_HW_FUNCTION_MODE_MRIOV:
4360 vxge_debug_init(VXGE_TRACE,
4361 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4362 break;
4363 }
4364 }
4365
703da5a1
RV		 4366 vxge_print_parm(vdev, vpath_mask);
4367
4368 /* Store the fw version for ethttool option */
4369 strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4370 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4371 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4372
4373 /* Copy the station mac address to the list */
4374 for (i = 0; i < vdev->no_of_vpath; i++) {
4375 entry = (struct vxge_mac_addrs *)
4376 kzalloc(sizeof(struct vxge_mac_addrs),
4377 GFP_KERNEL);
4378 if (NULL == entry) {
4379 vxge_debug_init(VXGE_ERR,
4380 "%s: mac_addr_list : memory allocation failed",
4381 vdev->ndev->name);
4382 ret = -EPERM;
7975d1ee 4383 goto _exit5;
703da5a1
RV		 4384 }
4385 macaddr = (u8 *)&entry->macaddr;
4386 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4387 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4388 vdev->vpaths[i].mac_addr_cnt = 1;
4389 }
4390
914d0d71 4391 kfree(device_config);
703da5a1
RV		 4392 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4393 vdev->ndev->name, __func__, __LINE__);
4394
4395 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4396 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4397 vxge_hw_device_trace_level_get(hldev));
4398
4399 return 0;
4400
7975d1ee 4401_exit5:
703da5a1
RV		 4402 for (i = 0; i < vdev->no_of_vpath; i++)
4403 vxge_free_mac_add_list(&vdev->vpaths[i]);
4404
4405 vxge_device_unregister(hldev);
7975d1ee 4406_exit4:
5dbc9011 4407 pci_disable_sriov(pdev);
703da5a1 4408 vxge_hw_device_terminate(hldev);
703da5a1
RV		 4409_exit3:
4410 iounmap(attr.bar0);
4411_exit2:
4412 pci_release_regions(pdev);
4413_exit1:
4414 pci_disable_device(pdev);
4415_exit0:
4416 kfree(device_config);
4417 driver_config->config_dev_cnt--;
4418 pci_set_drvdata(pdev, NULL);
4419 return ret;
4420}
4421
4422/**
4423 * vxge_rem_nic - Free the PCI device
4424 * @pdev: structure containing the PCI related information of the device.
4425 * Description: This function is called by the Pci subsystem to release a
4426 * PCI device and free up all resource held up by the device.
4427 */
4428static void __devexit
4429vxge_remove(struct pci_dev *pdev)
4430{
4431 struct __vxge_hw_device *hldev;
4432 struct vxgedev *vdev = NULL;
4433 struct net_device *dev;
4434 int i = 0;
4435#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4436 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4437 u32 level_trace;
4438#endif
4439
4440 hldev = (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4441
4442 if (hldev == NULL)
4443 return;
4444 dev = hldev->ndev;
4445 vdev = netdev_priv(dev);
4446
4447#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4448 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4449 level_trace = vdev->level_trace;
4450#endif
4451 vxge_debug_entryexit(level_trace,
4452 "%s:%d", __func__, __LINE__);
4453
4454 vxge_debug_init(level_trace,
4455 "%s : removing PCI device...", __func__);
4456 vxge_device_unregister(hldev);
4457
4458 for (i = 0; i < vdev->no_of_vpath; i++) {
4459 vxge_free_mac_add_list(&vdev->vpaths[i]);
4460 vdev->vpaths[i].mcast_addr_cnt = 0;
4461 vdev->vpaths[i].mac_addr_cnt = 0;
4462 }
4463
4464 kfree(vdev->vpaths);
4465
4466 iounmap(vdev->bar0);
703da5a1 4467
5dbc9011
SS		 4468 pci_disable_sriov(pdev);
4469
703da5a1
RV		 4470 /* we are safe to free it now */
4471 free_netdev(dev);
4472
4473 vxge_debug_init(level_trace,
4474 "%s:%d Device unregistered", __func__, __LINE__);
4475
4476 vxge_hw_device_terminate(hldev);
4477
4478 pci_disable_device(pdev);
4479 pci_release_regions(pdev);
4480 pci_set_drvdata(pdev, NULL);
4481 vxge_debug_entryexit(level_trace,
4482 "%s:%d Exiting...", __func__, __LINE__);
4483}
4484
4485static struct pci_error_handlers vxge_err_handler = {
4486 .error_detected = vxge_io_error_detected,
4487 .slot_reset = vxge_io_slot_reset,
4488 .resume = vxge_io_resume,
4489};
4490
4491static struct pci_driver vxge_driver = {
4492 .name = VXGE_DRIVER_NAME,
4493 .id_table = vxge_id_table,
4494 .probe = vxge_probe,
4495 .remove = __devexit_p(vxge_remove),
4496#ifdef CONFIG_PM
4497 .suspend = vxge_pm_suspend,
4498 .resume = vxge_pm_resume,
4499#endif
4500 .err_handler = &vxge_err_handler,
4501};
4502
4503static int __init
4504vxge_starter(void)
4505{
4506 int ret = 0;
4507 char version[32];
4508 snprintf(version, 32, "%s", DRV_VERSION);
4509
4510 printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4511 VXGE_DRIVER_NAME);
4512 printk(KERN_CRIT "%s: Driver version: %s\n",
4513 VXGE_DRIVER_NAME, version);
4514
4515 verify_bandwidth();
4516
4517 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4518 if (!driver_config)
4519 return -ENOMEM;
4520
4521 ret = pci_register_driver(&vxge_driver);
4522
4523 if (driver_config->config_dev_cnt &&
4524 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4525 vxge_debug_init(VXGE_ERR,
4526 "%s: Configured %d of %d devices",
4527 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4528 driver_config->total_dev_cnt);
4529
4530 if (ret)
4531 kfree(driver_config);
4532
4533 return ret;
4534}
4535
4536static void __exit
4537vxge_closer(void)
4538{
4539 pci_unregister_driver(&vxge_driver);
4540 kfree(driver_config);
4541}
4542module_init(vxge_starter);
4543module_exit(vxge_closer);
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