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net: bridge: fix sign bug
[net-next-2.6.git] / drivers / net / vxge / vxge-main.c
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703da5a1
RV		 1/******************************************************************************
2* This software may be used and distributed according to the terms of
3* the GNU General Public License (GPL), incorporated herein by reference.
4* Drivers based on or derived from this code fall under the GPL and must
5* retain the authorship, copyright and license notice. This file is not
6* a complete program and may only be used when the entire operating
7* system is licensed under the GPL.
8* See the file COPYING in this distribution for more information.
9*
10* vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
11* Virtualized Server Adapter.
12* Copyright(c) 2002-2009 Neterion Inc.
13*
14* The module loadable parameters that are supported by the driver and a brief
15* explanation of all the variables:
16* vlan_tag_strip:
17* Strip VLAN Tag enable/disable. Instructs the device to remove
18* the VLAN tag from all received tagged frames that are not
19* replicated at the internal L2 switch.
20* 0 - Do not strip the VLAN tag.
21* 1 - Strip the VLAN tag.
22*
23* addr_learn_en:
24* Enable learning the mac address of the guest OS interface in
25* a virtualization environment.
26* 0 - DISABLE
27* 1 - ENABLE
28*
29* max_config_port:
30* Maximum number of port to be supported.
31* MIN -1 and MAX - 2
32*
33* max_config_vpath:
34* This configures the maximum no of VPATH configures for each
35* device function.
36* MIN - 1 and MAX - 17
37*
38* max_config_dev:
39* This configures maximum no of Device function to be enabled.
40* MIN - 1 and MAX - 17
41*
42******************************************************************************/
43
44#include <linux/if_vlan.h>
45#include <linux/pci.h>
5a0e3ad6 46#include <linux/slab.h>
2b05e002 47#include <linux/tcp.h>
703da5a1
RV		 48#include <net/ip.h>
49#include <linux/netdevice.h>
50#include <linux/etherdevice.h>
51#include "vxge-main.h"
52#include "vxge-reg.h"
53
54MODULE_LICENSE("Dual BSD/GPL");
55MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
56 "Virtualized Server Adapter");
57
a3aa1884 58static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
703da5a1
RV		 59 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
60 PCI_ANY_ID},
61 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
62 PCI_ANY_ID},
63 {0}
64};
65
66MODULE_DEVICE_TABLE(pci, vxge_id_table);
67
68VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
69VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
70VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
71VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
72VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
73VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
74
75static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
76 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
77static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
78 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
79module_param_array(bw_percentage, uint, NULL, 0);
80
81static struct vxge_drv_config *driver_config;
82
83static inline int is_vxge_card_up(struct vxgedev *vdev)
84{
85 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
86}
87
88static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
89{
90 unsigned long flags = 0;
ff67df55
BL		 91 struct sk_buff **skb_ptr = NULL;
92 struct sk_buff **temp;
93#define NR_SKB_COMPLETED 128
94 struct sk_buff *completed[NR_SKB_COMPLETED];
95 int more;
703da5a1 96
ff67df55
BL		 97 do {
98 more = 0;
99 skb_ptr = completed;
100
101 if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
102 vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
103 NR_SKB_COMPLETED, &more);
104 spin_unlock_irqrestore(&fifo->tx_lock, flags);
105 }
106 /* free SKBs */
107 for (temp = completed; temp != skb_ptr; temp++)
108 dev_kfree_skb_irq(*temp);
109 } while (more) ;
703da5a1
RV		 110}
111
112static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
113{
114 int i;
115
116 /* Complete all transmits */
117 for (i = 0; i < vdev->no_of_vpath; i++)
118 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
119}
120
121static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
122{
123 int i;
124 struct vxge_ring *ring;
125
126 /* Complete all receives*/
127 for (i = 0; i < vdev->no_of_vpath; i++) {
128 ring = &vdev->vpaths[i].ring;
129 vxge_hw_vpath_poll_rx(ring->handle);
130 }
131}
132
133/*
134 * MultiQ manipulation helper functions
135 */
136void vxge_stop_all_tx_queue(struct vxgedev *vdev)
137{
138 int i;
139 struct net_device *dev = vdev->ndev;
140
141 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
142 for (i = 0; i < vdev->no_of_vpath; i++)
143 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
144 }
145 netif_tx_stop_all_queues(dev);
146}
147
148void vxge_stop_tx_queue(struct vxge_fifo *fifo)
149{
150 struct net_device *dev = fifo->ndev;
151
152 struct netdev_queue *txq = NULL;
153 if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
154 txq = netdev_get_tx_queue(dev, fifo->driver_id);
155 else {
156 txq = netdev_get_tx_queue(dev, 0);
157 fifo->queue_state = VPATH_QUEUE_STOP;
158 }
159
160 netif_tx_stop_queue(txq);
161}
162
163void vxge_start_all_tx_queue(struct vxgedev *vdev)
164{
165 int i;
166 struct net_device *dev = vdev->ndev;
167
168 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
169 for (i = 0; i < vdev->no_of_vpath; i++)
170 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
171 }
172 netif_tx_start_all_queues(dev);
173}
174
175static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
176{
177 int i;
178 struct net_device *dev = vdev->ndev;
179
180 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
181 for (i = 0; i < vdev->no_of_vpath; i++)
182 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
183 }
184 netif_tx_wake_all_queues(dev);
185}
186
187void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
188{
189 struct net_device *dev = fifo->ndev;
190
191 int vpath_no = fifo->driver_id;
192 struct netdev_queue *txq = NULL;
193 if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
194 txq = netdev_get_tx_queue(dev, vpath_no);
195 if (netif_tx_queue_stopped(txq))
196 netif_tx_wake_queue(txq);
197 } else {
198 txq = netdev_get_tx_queue(dev, 0);
199 if (fifo->queue_state == VPATH_QUEUE_STOP)
200 if (netif_tx_queue_stopped(txq)) {
201 fifo->queue_state = VPATH_QUEUE_START;
202 netif_tx_wake_queue(txq);
203 }
204 }
205}
206
207/*
208 * vxge_callback_link_up
209 *
210 * This function is called during interrupt context to notify link up state
211 * change.
212 */
213void
214vxge_callback_link_up(struct __vxge_hw_device *hldev)
215{
216 struct net_device *dev = hldev->ndev;
217 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
218
219 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
220 vdev->ndev->name, __func__, __LINE__);
221 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
222 vdev->stats.link_up++;
223
224 netif_carrier_on(vdev->ndev);
225 vxge_wake_all_tx_queue(vdev);
226
227 vxge_debug_entryexit(VXGE_TRACE,
228 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
229}
230
231/*
232 * vxge_callback_link_down
233 *
234 * This function is called during interrupt context to notify link down state
235 * change.
236 */
237void
238vxge_callback_link_down(struct __vxge_hw_device *hldev)
239{
240 struct net_device *dev = hldev->ndev;
241 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
242
243 vxge_debug_entryexit(VXGE_TRACE,
244 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
245 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
246
247 vdev->stats.link_down++;
248 netif_carrier_off(vdev->ndev);
249 vxge_stop_all_tx_queue(vdev);
250
251 vxge_debug_entryexit(VXGE_TRACE,
252 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
253}
254
255/*
256 * vxge_rx_alloc
257 *
258 * Allocate SKB.
259 */
260static struct sk_buff*
261vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
262{
263 struct net_device *dev;
264 struct sk_buff *skb;
265 struct vxge_rx_priv *rx_priv;
266
267 dev = ring->ndev;
268 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
269 ring->ndev->name, __func__, __LINE__);
270
271 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
272
273 /* try to allocate skb first. this one may fail */
274 skb = netdev_alloc_skb(dev, skb_size +
275 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
276 if (skb == NULL) {
277 vxge_debug_mem(VXGE_ERR,
278 "%s: out of memory to allocate SKB", dev->name);
279 ring->stats.skb_alloc_fail++;
280 return NULL;
281 }
282
283 vxge_debug_mem(VXGE_TRACE,
284 "%s: %s:%d Skb : 0x%p", ring->ndev->name,
285 __func__, __LINE__, skb);
286
287 skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
288
289 rx_priv->skb = skb;
ea11bbe0 290 rx_priv->skb_data = NULL;
703da5a1
RV		 291 rx_priv->data_size = skb_size;
292 vxge_debug_entryexit(VXGE_TRACE,
293 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
294
295 return skb;
296}
297
298/*
299 * vxge_rx_map
300 */
301static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
302{
303 struct vxge_rx_priv *rx_priv;
304 dma_addr_t dma_addr;
305
306 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
307 ring->ndev->name, __func__, __LINE__);
308 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
309
ea11bbe0
BL		 310 rx_priv->skb_data = rx_priv->skb->data;
311 dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
703da5a1
RV		 312 rx_priv->data_size, PCI_DMA_FROMDEVICE);
313
fa15e99b 314 if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
703da5a1
RV		 315 ring->stats.pci_map_fail++;
316 return -EIO;
317 }
318 vxge_debug_mem(VXGE_TRACE,
319 "%s: %s:%d 1 buffer mode dma_addr = 0x%llx",
320 ring->ndev->name, __func__, __LINE__,
321 (unsigned long long)dma_addr);
322 vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
323
324 rx_priv->data_dma = dma_addr;
325 vxge_debug_entryexit(VXGE_TRACE,
326 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
327
328 return 0;
329}
330
331/*
332 * vxge_rx_initial_replenish
333 * Allocation of RxD as an initial replenish procedure.
334 */
335static enum vxge_hw_status
336vxge_rx_initial_replenish(void *dtrh, void *userdata)
337{
338 struct vxge_ring *ring = (struct vxge_ring *)userdata;
339 struct vxge_rx_priv *rx_priv;
340
341 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
342 ring->ndev->name, __func__, __LINE__);
343 if (vxge_rx_alloc(dtrh, ring,
344 VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
345 return VXGE_HW_FAIL;
346
347 if (vxge_rx_map(dtrh, ring)) {
348 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
349 dev_kfree_skb(rx_priv->skb);
350
351 return VXGE_HW_FAIL;
352 }
353 vxge_debug_entryexit(VXGE_TRACE,
354 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
355
356 return VXGE_HW_OK;
357}
358
359static inline void
360vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
361 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
362{
363
364 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
365 ring->ndev->name, __func__, __LINE__);
366 skb_record_rx_queue(skb, ring->driver_id);
367 skb->protocol = eth_type_trans(skb, ring->ndev);
368
369 ring->stats.rx_frms++;
370 ring->stats.rx_bytes += pkt_length;
371
372 if (skb->pkt_type == PACKET_MULTICAST)
373 ring->stats.rx_mcast++;
374
375 vxge_debug_rx(VXGE_TRACE,
376 "%s: %s:%d skb protocol = %d",
377 ring->ndev->name, __func__, __LINE__, skb->protocol);
378
379 if (ring->gro_enable) {
380 if (ring->vlgrp && ext_info->vlan &&
381 (ring->vlan_tag_strip ==
382 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
a5d165b5 383 vlan_gro_receive(ring->napi_p, ring->vlgrp,
703da5a1
RV		 384 ext_info->vlan, skb);
385 else
a5d165b5 386 napi_gro_receive(ring->napi_p, skb);
703da5a1
RV		 387 } else {
388 if (ring->vlgrp && vlan &&
389 (ring->vlan_tag_strip ==
390 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
391 vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
392 else
393 netif_receive_skb(skb);
394 }
395 vxge_debug_entryexit(VXGE_TRACE,
396 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
397}
398
399static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
400 struct vxge_rx_priv *rx_priv)
401{
402 pci_dma_sync_single_for_device(ring->pdev,
403 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
404
405 vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
406 vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
407}
408
409static inline void vxge_post(int *dtr_cnt, void **first_dtr,
410 void *post_dtr, struct __vxge_hw_ring *ringh)
411{
412 int dtr_count = *dtr_cnt;
413 if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
414 if (*first_dtr)
415 vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
416 *first_dtr = post_dtr;
417 } else
418 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
419 dtr_count++;
420 *dtr_cnt = dtr_count;
421}
422
423/*
424 * vxge_rx_1b_compl
425 *
426 * If the interrupt is because of a received frame or if the receive ring
427 * contains fresh as yet un-processed frames, this function is called.
428 */
429enum vxge_hw_status
430vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
431 u8 t_code, void *userdata)
432{
433 struct vxge_ring *ring = (struct vxge_ring *)userdata;
434 struct net_device *dev = ring->ndev;
435 unsigned int dma_sizes;
436 void *first_dtr = NULL;
437 int dtr_cnt = 0;
438 int data_size;
439 dma_addr_t data_dma;
440 int pkt_length;
441 struct sk_buff *skb;
442 struct vxge_rx_priv *rx_priv;
443 struct vxge_hw_ring_rxd_info ext_info;
444 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
445 ring->ndev->name, __func__, __LINE__);
446 ring->pkts_processed = 0;
447
3363276f 448 vxge_hw_ring_replenish(ringh);
703da5a1
RV		 449
450 do {
3f23e436 451 prefetch((char *)dtr + L1_CACHE_BYTES);
703da5a1
RV		 452 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
453 skb = rx_priv->skb;
454 data_size = rx_priv->data_size;
455 data_dma = rx_priv->data_dma;
ea11bbe0 456 prefetch(rx_priv->skb_data);
703da5a1
RV		 457
458 vxge_debug_rx(VXGE_TRACE,
459 "%s: %s:%d skb = 0x%p",
460 ring->ndev->name, __func__, __LINE__, skb);
461
462 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
463 pkt_length = dma_sizes;
464
22fa125e
SH		 465 pkt_length -= ETH_FCS_LEN;
466
703da5a1
RV		 467 vxge_debug_rx(VXGE_TRACE,
468 "%s: %s:%d Packet Length = %d",
469 ring->ndev->name, __func__, __LINE__, pkt_length);
470
471 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
472
473 /* check skb validity */
474 vxge_assert(skb);
475
476 prefetch((char *)skb + L1_CACHE_BYTES);
477 if (unlikely(t_code)) {
478
479 if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
480 VXGE_HW_OK) {
481
482 ring->stats.rx_errors++;
483 vxge_debug_rx(VXGE_TRACE,
484 "%s: %s :%d Rx T_code is %d",
485 ring->ndev->name, __func__,
486 __LINE__, t_code);
487
488 /* If the t_code is not supported and if the
489 * t_code is other than 0x5 (unparseable packet
490 * such as unknown UPV6 header), Drop it !!!
491 */
492 vxge_re_pre_post(dtr, ring, rx_priv);
493
494 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
495 ring->stats.rx_dropped++;
496 continue;
497 }
498 }
499
500 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
501
502 if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
503
504 if (!vxge_rx_map(dtr, ring)) {
505 skb_put(skb, pkt_length);
506
507 pci_unmap_single(ring->pdev, data_dma,
508 data_size, PCI_DMA_FROMDEVICE);
509
510 vxge_hw_ring_rxd_pre_post(ringh, dtr);
511 vxge_post(&dtr_cnt, &first_dtr, dtr,
512 ringh);
513 } else {
514 dev_kfree_skb(rx_priv->skb);
515 rx_priv->skb = skb;
516 rx_priv->data_size = data_size;
517 vxge_re_pre_post(dtr, ring, rx_priv);
518
519 vxge_post(&dtr_cnt, &first_dtr, dtr,
520 ringh);
521 ring->stats.rx_dropped++;
522 break;
523 }
524 } else {
525 vxge_re_pre_post(dtr, ring, rx_priv);
526
527 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
528 ring->stats.rx_dropped++;
529 break;
530 }
531 } else {
532 struct sk_buff *skb_up;
533
534 skb_up = netdev_alloc_skb(dev, pkt_length +
535 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
536 if (skb_up != NULL) {
537 skb_reserve(skb_up,
538 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
539
540 pci_dma_sync_single_for_cpu(ring->pdev,
541 data_dma, data_size,
542 PCI_DMA_FROMDEVICE);
543
544 vxge_debug_mem(VXGE_TRACE,
545 "%s: %s:%d skb_up = %p",
546 ring->ndev->name, __func__,
547 __LINE__, skb);
548 memcpy(skb_up->data, skb->data, pkt_length);
549
550 vxge_re_pre_post(dtr, ring, rx_priv);
551
552 vxge_post(&dtr_cnt, &first_dtr, dtr,
553 ringh);
554 /* will netif_rx small SKB instead */
555 skb = skb_up;
556 skb_put(skb, pkt_length);
557 } else {
558 vxge_re_pre_post(dtr, ring, rx_priv);
559
560 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
561 vxge_debug_rx(VXGE_ERR,
562 "%s: vxge_rx_1b_compl: out of "
563 "memory", dev->name);
564 ring->stats.skb_alloc_fail++;
565 break;
566 }
567 }
568
569 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
570 !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
571 ring->rx_csum && /* Offload Rx side CSUM */
572 ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
573 ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
574 skb->ip_summed = CHECKSUM_UNNECESSARY;
575 else
576 skb->ip_summed = CHECKSUM_NONE;
577
578 vxge_rx_complete(ring, skb, ext_info.vlan,
579 pkt_length, &ext_info);
580
581 ring->budget--;
582 ring->pkts_processed++;
583 if (!ring->budget)
584 break;
585
586 } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
587 &t_code) == VXGE_HW_OK);
588
589 if (first_dtr)
590 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
591
703da5a1
RV		 592 vxge_debug_entryexit(VXGE_TRACE,
593 "%s:%d Exiting...",
594 __func__, __LINE__);
595 return VXGE_HW_OK;
596}
597
598/*
599 * vxge_xmit_compl
600 *
601 * If an interrupt was raised to indicate DMA complete of the Tx packet,
602 * this function is called. It identifies the last TxD whose buffer was
603 * freed and frees all skbs whose data have already DMA'ed into the NICs
604 * internal memory.
605 */
606enum vxge_hw_status
607vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
608 enum vxge_hw_fifo_tcode t_code, void *userdata,
ff67df55 609 struct sk_buff ***skb_ptr, int nr_skb, int *more)
703da5a1
RV		 610{
611 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
ff67df55 612 struct sk_buff *skb, **done_skb = *skb_ptr;
703da5a1
RV		 613 int pkt_cnt = 0;
614
615 vxge_debug_entryexit(VXGE_TRACE,
616 "%s:%d Entered....", __func__, __LINE__);
617
618 do {
619 int frg_cnt;
620 skb_frag_t *frag;
621 int i = 0, j;
622 struct vxge_tx_priv *txd_priv =
623 vxge_hw_fifo_txdl_private_get(dtr);
624
625 skb = txd_priv->skb;
626 frg_cnt = skb_shinfo(skb)->nr_frags;
627 frag = &skb_shinfo(skb)->frags[0];
628
629 vxge_debug_tx(VXGE_TRACE,
630 "%s: %s:%d fifo_hw = %p dtr = %p "
631 "tcode = 0x%x", fifo->ndev->name, __func__,
632 __LINE__, fifo_hw, dtr, t_code);
633 /* check skb validity */
634 vxge_assert(skb);
635 vxge_debug_tx(VXGE_TRACE,
636 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
637 fifo->ndev->name, __func__, __LINE__,
638 skb, txd_priv, frg_cnt);
639 if (unlikely(t_code)) {
640 fifo->stats.tx_errors++;
641 vxge_debug_tx(VXGE_ERR,
642 "%s: tx: dtr %p completed due to "
643 "error t_code %01x", fifo->ndev->name,
644 dtr, t_code);
645 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
646 }
647
648 /* for unfragmented skb */
649 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
650 skb_headlen(skb), PCI_DMA_TODEVICE);
651
652 for (j = 0; j < frg_cnt; j++) {
653 pci_unmap_page(fifo->pdev,
654 txd_priv->dma_buffers[i++],
655 frag->size, PCI_DMA_TODEVICE);
656 frag += 1;
657 }
658
659 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
660
661 /* Updating the statistics block */
662 fifo->stats.tx_frms++;
663 fifo->stats.tx_bytes += skb->len;
664
ff67df55
BL		 665 *done_skb++ = skb;
666
667 if (--nr_skb <= 0) {
668 *more = 1;
669 break;
670 }
703da5a1
RV		 671
672 pkt_cnt++;
673 if (pkt_cnt > fifo->indicate_max_pkts)
674 break;
675
676 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
677 &dtr, &t_code) == VXGE_HW_OK);
678
ff67df55 679 *skb_ptr = done_skb;
703da5a1
RV		 680 vxge_wake_tx_queue(fifo, skb);
681
703da5a1
RV		 682 vxge_debug_entryexit(VXGE_TRACE,
683 "%s: %s:%d Exiting...",
684 fifo->ndev->name, __func__, __LINE__);
685 return VXGE_HW_OK;
686}
687
28679751 688/* select a vpath to transmit the packet */
703da5a1
RV		 689static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
690 int *do_lock)
691{
692 u16 queue_len, counter = 0;
693 if (skb->protocol == htons(ETH_P_IP)) {
694 struct iphdr *ip;
695 struct tcphdr *th;
696
697 ip = ip_hdr(skb);
698
699 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
700 th = (struct tcphdr *)(((unsigned char *)ip) +
701 ip->ihl*4);
702
703 queue_len = vdev->no_of_vpath;
704 counter = (ntohs(th->source) +
705 ntohs(th->dest)) &
706 vdev->vpath_selector[queue_len - 1];
707 if (counter >= queue_len)
708 counter = queue_len - 1;
709
710 if (ip->protocol == IPPROTO_UDP) {
711#ifdef NETIF_F_LLTX
712 *do_lock = 0;
713#endif
714 }
715 }
716 }
717 return counter;
718}
719
720static enum vxge_hw_status vxge_search_mac_addr_in_list(
721 struct vxge_vpath *vpath, u64 del_mac)
722{
723 struct list_head *entry, *next;
724 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
725 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
726 return TRUE;
727 }
728 return FALSE;
729}
730
731static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
732{
733 struct macInfo mac_info;
734 u8 *mac_address = NULL;
735 u64 mac_addr = 0, vpath_vector = 0;
736 int vpath_idx = 0;
737 enum vxge_hw_status status = VXGE_HW_OK;
738 struct vxge_vpath *vpath = NULL;
739 struct __vxge_hw_device *hldev;
740
741 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
742
743 mac_address = (u8 *)&mac_addr;
744 memcpy(mac_address, mac_header, ETH_ALEN);
745
746 /* Is this mac address already in the list? */
747 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
748 vpath = &vdev->vpaths[vpath_idx];
749 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
750 return vpath_idx;
751 }
752
753 memset(&mac_info, 0, sizeof(struct macInfo));
754 memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
755
756 /* Any vpath has room to add mac address to its da table? */
757 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
758 vpath = &vdev->vpaths[vpath_idx];
759 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
760 /* Add this mac address to this vpath */
761 mac_info.vpath_no = vpath_idx;
762 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
763 status = vxge_add_mac_addr(vdev, &mac_info);
764 if (status != VXGE_HW_OK)
765 return -EPERM;
766 return vpath_idx;
767 }
768 }
769
770 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
771 vpath_idx = 0;
772 mac_info.vpath_no = vpath_idx;
773 /* Is the first vpath already selected as catch-basin ? */
774 vpath = &vdev->vpaths[vpath_idx];
775 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
776 /* Add this mac address to this vpath */
777 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
778 return -EPERM;
779 return vpath_idx;
780 }
781
782 /* Select first vpath as catch-basin */
783 vpath_vector = vxge_mBIT(vpath->device_id);
784 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
785 vxge_hw_mgmt_reg_type_mrpcim,
786 0,
787 (ulong)offsetof(
788 struct vxge_hw_mrpcim_reg,
789 rts_mgr_cbasin_cfg),
790 vpath_vector);
791 if (status != VXGE_HW_OK) {
792 vxge_debug_tx(VXGE_ERR,
793 "%s: Unable to set the vpath-%d in catch-basin mode",
794 VXGE_DRIVER_NAME, vpath->device_id);
795 return -EPERM;
796 }
797
798 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
799 return -EPERM;
800
801 return vpath_idx;
802}
803
804/**
805 * vxge_xmit
806 * @skb : the socket buffer containing the Tx data.
807 * @dev : device pointer.
808 *
809 * This function is the Tx entry point of the driver. Neterion NIC supports
810 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
811 * NOTE: when device cant queue the pkt, just the trans_start variable will
812 * not be upadted.
813*/
61357325 814static netdev_tx_t
703da5a1
RV		 815vxge_xmit(struct sk_buff *skb, struct net_device *dev)
816{
817 struct vxge_fifo *fifo = NULL;
818 void *dtr_priv;
819 void *dtr = NULL;
820 struct vxgedev *vdev = NULL;
821 enum vxge_hw_status status;
822 int frg_cnt, first_frg_len;
823 skb_frag_t *frag;
824 int i = 0, j = 0, avail;
825 u64 dma_pointer;
826 struct vxge_tx_priv *txdl_priv = NULL;
827 struct __vxge_hw_fifo *fifo_hw;
703da5a1
RV		 828 int offload_type;
829 unsigned long flags = 0;
830 int vpath_no = 0;
831 int do_spin_tx_lock = 1;
832
833 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
834 dev->name, __func__, __LINE__);
835
836 /* A buffer with no data will be dropped */
837 if (unlikely(skb->len <= 0)) {
838 vxge_debug_tx(VXGE_ERR,
839 "%s: Buffer has no data..", dev->name);
840 dev_kfree_skb(skb);
841 return NETDEV_TX_OK;
842 }
843
844 vdev = (struct vxgedev *)netdev_priv(dev);
845
846 if (unlikely(!is_vxge_card_up(vdev))) {
847 vxge_debug_tx(VXGE_ERR,
848 "%s: vdev not initialized", dev->name);
849 dev_kfree_skb(skb);
850 return NETDEV_TX_OK;
851 }
852
853 if (vdev->config.addr_learn_en) {
854 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
855 if (vpath_no == -EPERM) {
856 vxge_debug_tx(VXGE_ERR,
857 "%s: Failed to store the mac address",
858 dev->name);
859 dev_kfree_skb(skb);
860 return NETDEV_TX_OK;
861 }
862 }
863
864 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
865 vpath_no = skb_get_queue_mapping(skb);
866 else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
867 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
868
869 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
870
871 if (vpath_no >= vdev->no_of_vpath)
872 vpath_no = 0;
873
874 fifo = &vdev->vpaths[vpath_no].fifo;
875 fifo_hw = fifo->handle;
876
877 if (do_spin_tx_lock)
878 spin_lock_irqsave(&fifo->tx_lock, flags);
879 else {
880 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
881 return NETDEV_TX_LOCKED;
882 }
883
884 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
885 if (netif_subqueue_stopped(dev, skb)) {
886 spin_unlock_irqrestore(&fifo->tx_lock, flags);
887 return NETDEV_TX_BUSY;
888 }
889 } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
890 if (netif_queue_stopped(dev)) {
891 spin_unlock_irqrestore(&fifo->tx_lock, flags);
892 return NETDEV_TX_BUSY;
893 }
894 }
895 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
896 if (avail == 0) {
897 vxge_debug_tx(VXGE_ERR,
898 "%s: No free TXDs available", dev->name);
899 fifo->stats.txd_not_free++;
900 vxge_stop_tx_queue(fifo);
901 goto _exit2;
902 }
903
4403b371
BL		 904 /* Last TXD? Stop tx queue to avoid dropping packets. TX
905 * completion will resume the queue.
906 */
907 if (avail == 1)
908 vxge_stop_tx_queue(fifo);
909
703da5a1
RV		 910 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
911 if (unlikely(status != VXGE_HW_OK)) {
912 vxge_debug_tx(VXGE_ERR,
913 "%s: Out of descriptors .", dev->name);
914 fifo->stats.txd_out_of_desc++;
915 vxge_stop_tx_queue(fifo);
916 goto _exit2;
917 }
918
919 vxge_debug_tx(VXGE_TRACE,
920 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
921 dev->name, __func__, __LINE__,
922 fifo_hw, dtr, dtr_priv);
923
924 if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
925 u16 vlan_tag = vlan_tx_tag_get(skb);
926 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
927 }
928
929 first_frg_len = skb_headlen(skb);
930
931 dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
932 PCI_DMA_TODEVICE);
933
934 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
935 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
936 vxge_stop_tx_queue(fifo);
937 fifo->stats.pci_map_fail++;
938 goto _exit2;
939 }
940
941 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
942 txdl_priv->skb = skb;
943 txdl_priv->dma_buffers[j] = dma_pointer;
944
945 frg_cnt = skb_shinfo(skb)->nr_frags;
946 vxge_debug_tx(VXGE_TRACE,
947 "%s: %s:%d skb = %p txdl_priv = %p "
948 "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
949 __func__, __LINE__, skb, txdl_priv,
950 frg_cnt, (unsigned long long)dma_pointer);
951
952 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
953 first_frg_len);
954
955 frag = &skb_shinfo(skb)->frags[0];
956 for (i = 0; i < frg_cnt; i++) {
957 /* ignore 0 length fragment */
958 if (!frag->size)
959 continue;
960
961 dma_pointer =
962 (u64)pci_map_page(fifo->pdev, frag->page,
963 frag->page_offset, frag->size,
964 PCI_DMA_TODEVICE);
965
966 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
967 goto _exit0;
968 vxge_debug_tx(VXGE_TRACE,
969 "%s: %s:%d frag = %d dma_pointer = 0x%llx",
970 dev->name, __func__, __LINE__, i,
971 (unsigned long long)dma_pointer);
972
973 txdl_priv->dma_buffers[j] = dma_pointer;
974 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
975 frag->size);
976 frag += 1;
977 }
978
979 offload_type = vxge_offload_type(skb);
980
981 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
982
983 int mss = vxge_tcp_mss(skb);
984 if (mss) {
703da5a1
RV		 985 vxge_debug_tx(VXGE_TRACE,
986 "%s: %s:%d mss = %d",
987 dev->name, __func__, __LINE__, mss);
988 vxge_hw_fifo_txdl_mss_set(dtr, mss);
989 } else {
990 vxge_assert(skb->len <=
991 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
992 vxge_assert(0);
993 goto _exit1;
994 }
995 }
996
997 if (skb->ip_summed == CHECKSUM_PARTIAL)
998 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
999 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
1000 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
1001 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
1002
1003 vxge_hw_fifo_txdl_post(fifo_hw, dtr);
28679751
ED		 1004#ifdef NETIF_F_LLTX
1005 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
1006#endif
703da5a1
RV		 1007 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1008
1009 VXGE_COMPLETE_VPATH_TX(fifo);
1010 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
1011 dev->name, __func__, __LINE__);
6ed10654 1012 return NETDEV_TX_OK;
703da5a1
RV		 1013
1014_exit0:
1015 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1016
1017_exit1:
1018 j = 0;
1019 frag = &skb_shinfo(skb)->frags[0];
1020
1021 pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1022 skb_headlen(skb), PCI_DMA_TODEVICE);
1023
1024 for (; j < i; j++) {
1025 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1026 frag->size, PCI_DMA_TODEVICE);
1027 frag += 1;
1028 }
1029
1030 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1031_exit2:
1032 dev_kfree_skb(skb);
1033 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1034 VXGE_COMPLETE_VPATH_TX(fifo);
1035
6ed10654 1036 return NETDEV_TX_OK;
703da5a1
RV		 1037}
1038
1039/*
1040 * vxge_rx_term
1041 *
1042 * Function will be called by hw function to abort all outstanding receive
1043 * descriptors.
1044 */
1045static void
1046vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1047{
1048 struct vxge_ring *ring = (struct vxge_ring *)userdata;
1049 struct vxge_rx_priv *rx_priv =
1050 vxge_hw_ring_rxd_private_get(dtrh);
1051
1052 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1053 ring->ndev->name, __func__, __LINE__);
1054 if (state != VXGE_HW_RXD_STATE_POSTED)
1055 return;
1056
1057 pci_unmap_single(ring->pdev, rx_priv->data_dma,
1058 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1059
1060 dev_kfree_skb(rx_priv->skb);
ea11bbe0 1061 rx_priv->skb_data = NULL;
703da5a1
RV		 1062
1063 vxge_debug_entryexit(VXGE_TRACE,
1064 "%s: %s:%d Exiting...",
1065 ring->ndev->name, __func__, __LINE__);
1066}
1067
1068/*
1069 * vxge_tx_term
1070 *
1071 * Function will be called to abort all outstanding tx descriptors
1072 */
1073static void
1074vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1075{
1076 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1077 skb_frag_t *frag;
1078 int i = 0, j, frg_cnt;
1079 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1080 struct sk_buff *skb = txd_priv->skb;
1081
1082 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1083
1084 if (state != VXGE_HW_TXDL_STATE_POSTED)
1085 return;
1086
1087 /* check skb validity */
1088 vxge_assert(skb);
1089 frg_cnt = skb_shinfo(skb)->nr_frags;
1090 frag = &skb_shinfo(skb)->frags[0];
1091
1092 /* for unfragmented skb */
1093 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1094 skb_headlen(skb), PCI_DMA_TODEVICE);
1095
1096 for (j = 0; j < frg_cnt; j++) {
1097 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1098 frag->size, PCI_DMA_TODEVICE);
1099 frag += 1;
1100 }
1101
1102 dev_kfree_skb(skb);
1103
1104 vxge_debug_entryexit(VXGE_TRACE,
1105 "%s:%d Exiting...", __func__, __LINE__);
1106}
1107
1108/**
1109 * vxge_set_multicast
1110 * @dev: pointer to the device structure
1111 *
1112 * Entry point for multicast address enable/disable
1113 * This function is a driver entry point which gets called by the kernel
1114 * whenever multicast addresses must be enabled/disabled. This also gets
1115 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1116 * determine, if multicast address must be enabled or if promiscuous mode
1117 * is to be disabled etc.
1118 */
1119static void vxge_set_multicast(struct net_device *dev)
1120{
22bedad3 1121 struct netdev_hw_addr *ha;
703da5a1
RV		 1122 struct vxgedev *vdev;
1123 int i, mcast_cnt = 0;
1124 struct __vxge_hw_device *hldev;
1125 enum vxge_hw_status status = VXGE_HW_OK;
1126 struct macInfo mac_info;
1127 int vpath_idx = 0;
1128 struct vxge_mac_addrs *mac_entry;
1129 struct list_head *list_head;
1130 struct list_head *entry, *next;
1131 u8 *mac_address = NULL;
1132
1133 vxge_debug_entryexit(VXGE_TRACE,
1134 "%s:%d", __func__, __LINE__);
1135
1136 vdev = (struct vxgedev *)netdev_priv(dev);
1137 hldev = (struct __vxge_hw_device *)vdev->devh;
1138
1139 if (unlikely(!is_vxge_card_up(vdev)))
1140 return;
1141
1142 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1143 for (i = 0; i < vdev->no_of_vpath; i++) {
1144 vxge_assert(vdev->vpaths[i].is_open);
1145 status = vxge_hw_vpath_mcast_enable(
1146 vdev->vpaths[i].handle);
1147 vdev->all_multi_flg = 1;
1148 }
1149 } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1150 for (i = 0; i < vdev->no_of_vpath; i++) {
1151 vxge_assert(vdev->vpaths[i].is_open);
1152 status = vxge_hw_vpath_mcast_disable(
1153 vdev->vpaths[i].handle);
1154 vdev->all_multi_flg = 1;
1155 }
1156 }
1157
1158 if (status != VXGE_HW_OK)
1159 vxge_debug_init(VXGE_ERR,
1160 "failed to %s multicast, status %d",
1161 dev->flags & IFF_ALLMULTI ?
1162 "enable" : "disable", status);
1163
1164 if (!vdev->config.addr_learn_en) {
1165 if (dev->flags & IFF_PROMISC) {
1166 for (i = 0; i < vdev->no_of_vpath; i++) {
1167 vxge_assert(vdev->vpaths[i].is_open);
1168 status = vxge_hw_vpath_promisc_enable(
1169 vdev->vpaths[i].handle);
1170 }
1171 } else {
1172 for (i = 0; i < vdev->no_of_vpath; i++) {
1173 vxge_assert(vdev->vpaths[i].is_open);
1174 status = vxge_hw_vpath_promisc_disable(
1175 vdev->vpaths[i].handle);
1176 }
1177 }
1178 }
1179
1180 memset(&mac_info, 0, sizeof(struct macInfo));
1181 /* Update individual M_CAST address list */
4cd24eaf 1182 if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
703da5a1
RV		 1183
1184 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1185 list_head = &vdev->vpaths[0].mac_addr_list;
4cd24eaf 1186 if ((netdev_mc_count(dev) +
703da5a1
RV		 1187 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1188 vdev->vpaths[0].max_mac_addr_cnt)
1189 goto _set_all_mcast;
1190
1191 /* Delete previous MC's */
1192 for (i = 0; i < mcast_cnt; i++) {
1193 if (!list_empty(list_head))
1194 mac_entry = (struct vxge_mac_addrs *)
1195 list_first_entry(list_head,
1196 struct vxge_mac_addrs,
1197 item);
1198
1199 list_for_each_safe(entry, next, list_head) {
1200
1201 mac_entry = (struct vxge_mac_addrs *) entry;
1202 /* Copy the mac address to delete */
1203 mac_address = (u8 *)&mac_entry->macaddr;
1204 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1205
1206 /* Is this a multicast address */
1207 if (0x01 & mac_info.macaddr[0]) {
1208 for (vpath_idx = 0; vpath_idx <
1209 vdev->no_of_vpath;
1210 vpath_idx++) {
1211 mac_info.vpath_no = vpath_idx;
1212 status = vxge_del_mac_addr(
1213 vdev,
1214 &mac_info);
1215 }
1216 }
1217 }
1218 }
1219
1220 /* Add new ones */
22bedad3
JP		 1221 netdev_for_each_mc_addr(ha, dev) {
1222 memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
703da5a1
RV		 1223 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1224 vpath_idx++) {
1225 mac_info.vpath_no = vpath_idx;
1226 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1227 status = vxge_add_mac_addr(vdev, &mac_info);
1228 if (status != VXGE_HW_OK) {
1229 vxge_debug_init(VXGE_ERR,
1230 "%s:%d Setting individual"
1231 "multicast address failed",
1232 __func__, __LINE__);
1233 goto _set_all_mcast;
1234 }
1235 }
1236 }
1237
1238 return;
1239_set_all_mcast:
1240 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1241 /* Delete previous MC's */
1242 for (i = 0; i < mcast_cnt; i++) {
1243
1244 list_for_each_safe(entry, next, list_head) {
1245
1246 mac_entry = (struct vxge_mac_addrs *) entry;
1247 /* Copy the mac address to delete */
1248 mac_address = (u8 *)&mac_entry->macaddr;
1249 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1250
1251 /* Is this a multicast address */
1252 if (0x01 & mac_info.macaddr[0])
1253 break;
1254 }
1255
1256 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1257 vpath_idx++) {
1258 mac_info.vpath_no = vpath_idx;
1259 status = vxge_del_mac_addr(vdev, &mac_info);
1260 }
1261 }
1262
1263 /* Enable all multicast */
1264 for (i = 0; i < vdev->no_of_vpath; i++) {
1265 vxge_assert(vdev->vpaths[i].is_open);
1266 status = vxge_hw_vpath_mcast_enable(
1267 vdev->vpaths[i].handle);
1268 if (status != VXGE_HW_OK) {
1269 vxge_debug_init(VXGE_ERR,
1270 "%s:%d Enabling all multicasts failed",
1271 __func__, __LINE__);
1272 }
1273 vdev->all_multi_flg = 1;
1274 }
1275 dev->flags |= IFF_ALLMULTI;
1276 }
1277
1278 vxge_debug_entryexit(VXGE_TRACE,
1279 "%s:%d Exiting...", __func__, __LINE__);
1280}
1281
1282/**
1283 * vxge_set_mac_addr
1284 * @dev: pointer to the device structure
1285 *
1286 * Update entry "0" (default MAC addr)
1287 */
1288static int vxge_set_mac_addr(struct net_device *dev, void *p)
1289{
1290 struct sockaddr *addr = p;
1291 struct vxgedev *vdev;
1292 struct __vxge_hw_device *hldev;
1293 enum vxge_hw_status status = VXGE_HW_OK;
1294 struct macInfo mac_info_new, mac_info_old;
1295 int vpath_idx = 0;
1296
1297 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1298
1299 vdev = (struct vxgedev *)netdev_priv(dev);
1300 hldev = vdev->devh;
1301
1302 if (!is_valid_ether_addr(addr->sa_data))
1303 return -EINVAL;
1304
1305 memset(&mac_info_new, 0, sizeof(struct macInfo));
1306 memset(&mac_info_old, 0, sizeof(struct macInfo));
1307
1308 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...",
1309 __func__, __LINE__);
1310
1311 /* Get the old address */
1312 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1313
1314 /* Copy the new address */
1315 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1316
1317 /* First delete the old mac address from all the vpaths
1318 as we can't specify the index while adding new mac address */
1319 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1320 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1321 if (!vpath->is_open) {
1322 /* This can happen when this interface is added/removed
1323 to the bonding interface. Delete this station address
1324 from the linked list */
1325 vxge_mac_list_del(vpath, &mac_info_old);
1326
1327 /* Add this new address to the linked list
1328 for later restoring */
1329 vxge_mac_list_add(vpath, &mac_info_new);
1330
1331 continue;
1332 }
1333 /* Delete the station address */
1334 mac_info_old.vpath_no = vpath_idx;
1335 status = vxge_del_mac_addr(vdev, &mac_info_old);
1336 }
1337
1338 if (unlikely(!is_vxge_card_up(vdev))) {
1339 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1340 return VXGE_HW_OK;
1341 }
1342
1343 /* Set this mac address to all the vpaths */
1344 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1345 mac_info_new.vpath_no = vpath_idx;
1346 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1347 status = vxge_add_mac_addr(vdev, &mac_info_new);
1348 if (status != VXGE_HW_OK)
1349 return -EINVAL;
1350 }
1351
1352 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1353
1354 return status;
1355}
1356
1357/*
1358 * vxge_vpath_intr_enable
1359 * @vdev: pointer to vdev
1360 * @vp_id: vpath for which to enable the interrupts
1361 *
1362 * Enables the interrupts for the vpath
1363*/
1364void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1365{
1366 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
b59c9457
SH		 1367 int msix_id = 0;
1368 int tim_msix_id[4] = {0, 1, 0, 0};
1369 int alarm_msix_id = VXGE_ALARM_MSIX_ID;
703da5a1
RV		 1370
1371 vxge_hw_vpath_intr_enable(vpath->handle);
1372
1373 if (vdev->config.intr_type == INTA)
1374 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1375 else {
703da5a1
RV		 1376 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1377 alarm_msix_id);
1378
b59c9457 1379 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
703da5a1
RV		 1380 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1381 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1382
1383 /* enable the alarm vector */
b59c9457
SH		 1384 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1385 VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1386 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
703da5a1
RV		 1387 }
1388}
1389
1390/*
1391 * vxge_vpath_intr_disable
1392 * @vdev: pointer to vdev
1393 * @vp_id: vpath for which to disable the interrupts
1394 *
1395 * Disables the interrupts for the vpath
1396*/
1397void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1398{
1399 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1400 int msix_id;
1401
1402 vxge_hw_vpath_intr_disable(vpath->handle);
1403
1404 if (vdev->config.intr_type == INTA)
1405 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1406 else {
b59c9457 1407 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
703da5a1
RV		 1408 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1409 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1410
1411 /* disable the alarm vector */
b59c9457
SH		 1412 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1413 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
703da5a1
RV		 1414 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1415 }
1416}
1417
1418/*
1419 * vxge_reset_vpath
1420 * @vdev: pointer to vdev
1421 * @vp_id: vpath to reset
1422 *
1423 * Resets the vpath
1424*/
1425static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1426{
1427 enum vxge_hw_status status = VXGE_HW_OK;
1428 int ret = 0;
1429
1430 /* check if device is down already */
1431 if (unlikely(!is_vxge_card_up(vdev)))
1432 return 0;
1433
1434 /* is device reset already scheduled */
1435 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1436 return 0;
1437
1438 if (vdev->vpaths[vp_id].handle) {
1439 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1440 == VXGE_HW_OK) {
1441 if (is_vxge_card_up(vdev) &&
1442 vxge_hw_vpath_recover_from_reset(
1443 vdev->vpaths[vp_id].handle)
1444 != VXGE_HW_OK) {
1445 vxge_debug_init(VXGE_ERR,
1446 "vxge_hw_vpath_recover_from_reset"
1447 "failed for vpath:%d", vp_id);
1448 return status;
1449 }
1450 } else {
1451 vxge_debug_init(VXGE_ERR,
1452 "vxge_hw_vpath_reset failed for"
1453 "vpath:%d", vp_id);
1454 return status;
1455 }
1456 } else
1457 return VXGE_HW_FAIL;
1458
1459 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1460 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1461
1462 /* Enable all broadcast */
1463 vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1464
1465 /* Enable the interrupts */
1466 vxge_vpath_intr_enable(vdev, vp_id);
1467
1468 smp_wmb();
1469
1470 /* Enable the flow of traffic through the vpath */
1471 vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1472
1473 smp_wmb();
1474 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1475 vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1476
1477 /* Vpath reset done */
1478 clear_bit(vp_id, &vdev->vp_reset);
1479
1480 /* Start the vpath queue */
1481 vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1482
1483 return ret;
1484}
1485
1486static int do_vxge_reset(struct vxgedev *vdev, int event)
1487{
1488 enum vxge_hw_status status;
1489 int ret = 0, vp_id, i;
1490
1491 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1492
1493 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1494 /* check if device is down already */
1495 if (unlikely(!is_vxge_card_up(vdev)))
1496 return 0;
1497
1498 /* is reset already scheduled */
1499 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1500 return 0;
1501 }
1502
1503 if (event == VXGE_LL_FULL_RESET) {
1504 /* wait for all the vpath reset to complete */
1505 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1506 while (test_bit(vp_id, &vdev->vp_reset))
1507 msleep(50);
1508 }
1509
1510 /* if execution mode is set to debug, don't reset the adapter */
1511 if (unlikely(vdev->exec_mode)) {
1512 vxge_debug_init(VXGE_ERR,
1513 "%s: execution mode is debug, returning..",
1514 vdev->ndev->name);
1515 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1516 vxge_stop_all_tx_queue(vdev);
1517 return 0;
1518 }
1519 }
1520
1521 if (event == VXGE_LL_FULL_RESET) {
1522 vxge_hw_device_intr_disable(vdev->devh);
1523
1524 switch (vdev->cric_err_event) {
1525 case VXGE_HW_EVENT_UNKNOWN:
1526 vxge_stop_all_tx_queue(vdev);
1527 vxge_debug_init(VXGE_ERR,
1528 "fatal: %s: Disabling device due to"
1529 "unknown error",
1530 vdev->ndev->name);
1531 ret = -EPERM;
1532 goto out;
1533 case VXGE_HW_EVENT_RESET_START:
1534 break;
1535 case VXGE_HW_EVENT_RESET_COMPLETE:
1536 case VXGE_HW_EVENT_LINK_DOWN:
1537 case VXGE_HW_EVENT_LINK_UP:
1538 case VXGE_HW_EVENT_ALARM_CLEARED:
1539 case VXGE_HW_EVENT_ECCERR:
1540 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1541 ret = -EPERM;
1542 goto out;
1543 case VXGE_HW_EVENT_FIFO_ERR:
1544 case VXGE_HW_EVENT_VPATH_ERR:
1545 break;
1546 case VXGE_HW_EVENT_CRITICAL_ERR:
1547 vxge_stop_all_tx_queue(vdev);
1548 vxge_debug_init(VXGE_ERR,
1549 "fatal: %s: Disabling device due to"
1550 "serious error",
1551 vdev->ndev->name);
1552 /* SOP or device reset required */
1553 /* This event is not currently used */
1554 ret = -EPERM;
1555 goto out;
1556 case VXGE_HW_EVENT_SERR:
1557 vxge_stop_all_tx_queue(vdev);
1558 vxge_debug_init(VXGE_ERR,
1559 "fatal: %s: Disabling device due to"
1560 "serious error",
1561 vdev->ndev->name);
1562 ret = -EPERM;
1563 goto out;
1564 case VXGE_HW_EVENT_SRPCIM_SERR:
1565 case VXGE_HW_EVENT_MRPCIM_SERR:
1566 ret = -EPERM;
1567 goto out;
1568 case VXGE_HW_EVENT_SLOT_FREEZE:
1569 vxge_stop_all_tx_queue(vdev);
1570 vxge_debug_init(VXGE_ERR,
1571 "fatal: %s: Disabling device due to"
1572 "slot freeze",
1573 vdev->ndev->name);
1574 ret = -EPERM;
1575 goto out;
1576 default:
1577 break;
1578
1579 }
1580 }
1581
1582 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1583 vxge_stop_all_tx_queue(vdev);
1584
1585 if (event == VXGE_LL_FULL_RESET) {
1586 status = vxge_reset_all_vpaths(vdev);
1587 if (status != VXGE_HW_OK) {
1588 vxge_debug_init(VXGE_ERR,
1589 "fatal: %s: can not reset vpaths",
1590 vdev->ndev->name);
1591 ret = -EPERM;
1592 goto out;
1593 }
1594 }
1595
1596 if (event == VXGE_LL_COMPL_RESET) {
1597 for (i = 0; i < vdev->no_of_vpath; i++)
1598 if (vdev->vpaths[i].handle) {
1599 if (vxge_hw_vpath_recover_from_reset(
1600 vdev->vpaths[i].handle)
1601 != VXGE_HW_OK) {
1602 vxge_debug_init(VXGE_ERR,
1603 "vxge_hw_vpath_recover_"
1604 "from_reset failed for vpath: "
1605 "%d", i);
1606 ret = -EPERM;
1607 goto out;
1608 }
1609 } else {
1610 vxge_debug_init(VXGE_ERR,
1611 "vxge_hw_vpath_reset failed for "
1612 "vpath:%d", i);
1613 ret = -EPERM;
1614 goto out;
1615 }
1616 }
1617
1618 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1619 /* Reprogram the DA table with populated mac addresses */
1620 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1621 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1622 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1623 }
1624
1625 /* enable vpath interrupts */
1626 for (i = 0; i < vdev->no_of_vpath; i++)
1627 vxge_vpath_intr_enable(vdev, i);
1628
1629 vxge_hw_device_intr_enable(vdev->devh);
1630
1631 smp_wmb();
1632
1633 /* Indicate card up */
1634 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1635
1636 /* Get the traffic to flow through the vpaths */
1637 for (i = 0; i < vdev->no_of_vpath; i++) {
1638 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1639 smp_wmb();
1640 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1641 }
1642
1643 vxge_wake_all_tx_queue(vdev);
1644 }
1645
1646out:
1647 vxge_debug_entryexit(VXGE_TRACE,
1648 "%s:%d Exiting...", __func__, __LINE__);
1649
1650 /* Indicate reset done */
1651 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1652 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1653 return ret;
1654}
1655
1656/*
1657 * vxge_reset
1658 * @vdev: pointer to ll device
1659 *
1660 * driver may reset the chip on events of serr, eccerr, etc
1661 */
1662int vxge_reset(struct vxgedev *vdev)
1663{
1664 do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1665 return 0;
1666}
1667
1668/**
1669 * vxge_poll - Receive handler when Receive Polling is used.
1670 * @dev: pointer to the device structure.
1671 * @budget: Number of packets budgeted to be processed in this iteration.
1672 *
1673 * This function comes into picture only if Receive side is being handled
1674 * through polling (called NAPI in linux). It mostly does what the normal
1675 * Rx interrupt handler does in terms of descriptor and packet processing
1676 * but not in an interrupt context. Also it will process a specified number
1677 * of packets at most in one iteration. This value is passed down by the
1678 * kernel as the function argument 'budget'.
1679 */
1680static int vxge_poll_msix(struct napi_struct *napi, int budget)
1681{
1682 struct vxge_ring *ring =
1683 container_of(napi, struct vxge_ring, napi);
1684 int budget_org = budget;
1685 ring->budget = budget;
1686
1687 vxge_hw_vpath_poll_rx(ring->handle);
1688
1689 if (ring->pkts_processed < budget_org) {
1690 napi_complete(napi);
1691 /* Re enable the Rx interrupts for the vpath */
1692 vxge_hw_channel_msix_unmask(
1693 (struct __vxge_hw_channel *)ring->handle,
1694 ring->rx_vector_no);
1695 }
1696
1697 return ring->pkts_processed;
1698}
1699
1700static int vxge_poll_inta(struct napi_struct *napi, int budget)
1701{
1702 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1703 int pkts_processed = 0;
1704 int i;
1705 int budget_org = budget;
1706 struct vxge_ring *ring;
1707
1708 struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)
1709 pci_get_drvdata(vdev->pdev);
1710
1711 for (i = 0; i < vdev->no_of_vpath; i++) {
1712 ring = &vdev->vpaths[i].ring;
1713 ring->budget = budget;
1714 vxge_hw_vpath_poll_rx(ring->handle);
1715 pkts_processed += ring->pkts_processed;
1716 budget -= ring->pkts_processed;
1717 if (budget <= 0)
1718 break;
1719 }
1720
1721 VXGE_COMPLETE_ALL_TX(vdev);
1722
1723 if (pkts_processed < budget_org) {
1724 napi_complete(napi);
1725 /* Re enable the Rx interrupts for the ring */
1726 vxge_hw_device_unmask_all(hldev);
1727 vxge_hw_device_flush_io(hldev);
1728 }
1729
1730 return pkts_processed;
1731}
1732
1733#ifdef CONFIG_NET_POLL_CONTROLLER
1734/**
1735 * vxge_netpoll - netpoll event handler entry point
1736 * @dev : pointer to the device structure.
1737 * Description:
1738 * This function will be called by upper layer to check for events on the
1739 * interface in situations where interrupts are disabled. It is used for
1740 * specific in-kernel networking tasks, such as remote consoles and kernel
1741 * debugging over the network (example netdump in RedHat).
1742 */
1743static void vxge_netpoll(struct net_device *dev)
1744{
1745 struct __vxge_hw_device *hldev;
1746 struct vxgedev *vdev;
1747
1748 vdev = (struct vxgedev *)netdev_priv(dev);
1749 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1750
1751 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1752
1753 if (pci_channel_offline(vdev->pdev))
1754 return;
1755
1756 disable_irq(dev->irq);
1757 vxge_hw_device_clear_tx_rx(hldev);
1758
1759 vxge_hw_device_clear_tx_rx(hldev);
1760 VXGE_COMPLETE_ALL_RX(vdev);
1761 VXGE_COMPLETE_ALL_TX(vdev);
1762
1763 enable_irq(dev->irq);
1764
1765 vxge_debug_entryexit(VXGE_TRACE,
1766 "%s:%d Exiting...", __func__, __LINE__);
703da5a1
RV		 1767}
1768#endif
1769
1770/* RTH configuration */
1771static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1772{
1773 enum vxge_hw_status status = VXGE_HW_OK;
1774 struct vxge_hw_rth_hash_types hash_types;
1775 u8 itable[256] = {0}; /* indirection table */
1776 u8 mtable[256] = {0}; /* CPU to vpath mapping */
1777 int index;
1778
1779 /*
1780 * Filling
1781 * - itable with bucket numbers
1782 * - mtable with bucket-to-vpath mapping
1783 */
1784 for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1785 itable[index] = index;
1786 mtable[index] = index % vdev->no_of_vpath;
1787 }
1788
1789 /* Fill RTH hash types */
1790 hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4;
1791 hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4;
1792 hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6;
1793 hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6;
1794 hash_types.hash_type_tcpipv6ex_en =
1795 vdev->config.rth_hash_type_tcpipv6ex;
1796 hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex;
1797
1798 /* set indirection table, bucket-to-vpath mapping */
1799 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1800 vdev->no_of_vpath,
1801 mtable, itable,
1802 vdev->config.rth_bkt_sz);
1803 if (status != VXGE_HW_OK) {
1804 vxge_debug_init(VXGE_ERR,
1805 "RTH indirection table configuration failed "
1806 "for vpath:%d", vdev->vpaths[0].device_id);
1807 return status;
1808 }
1809
1810 /*
1811 * Because the itable_set() method uses the active_table field
1812 * for the target virtual path the RTH config should be updated
1813 * for all VPATHs. The h/w only uses the lowest numbered VPATH
1814 * when steering frames.
1815 */
1816 for (index = 0; index < vdev->no_of_vpath; index++) {
1817 status = vxge_hw_vpath_rts_rth_set(
1818 vdev->vpaths[index].handle,
1819 vdev->config.rth_algorithm,
1820 &hash_types,
1821 vdev->config.rth_bkt_sz);
1822
1823 if (status != VXGE_HW_OK) {
1824 vxge_debug_init(VXGE_ERR,
1825 "RTH configuration failed for vpath:%d",
1826 vdev->vpaths[index].device_id);
1827 return status;
1828 }
1829 }
1830
1831 return status;
1832}
1833
1834int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1835{
1836 struct vxge_mac_addrs *new_mac_entry;
1837 u8 *mac_address = NULL;
1838
1839 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1840 return TRUE;
1841
1842 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1843 if (!new_mac_entry) {
1844 vxge_debug_mem(VXGE_ERR,
1845 "%s: memory allocation failed",
1846 VXGE_DRIVER_NAME);
1847 return FALSE;
1848 }
1849
1850 list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1851
1852 /* Copy the new mac address to the list */
1853 mac_address = (u8 *)&new_mac_entry->macaddr;
1854 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1855
1856 new_mac_entry->state = mac->state;
1857 vpath->mac_addr_cnt++;
1858
1859 /* Is this a multicast address */
1860 if (0x01 & mac->macaddr[0])
1861 vpath->mcast_addr_cnt++;
1862
1863 return TRUE;
1864}
1865
1866/* Add a mac address to DA table */
1867enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1868{
1869 enum vxge_hw_status status = VXGE_HW_OK;
1870 struct vxge_vpath *vpath;
1871 enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1872
1873 if (0x01 & mac->macaddr[0]) /* multicast address */
1874 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1875 else
1876 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1877
1878 vpath = &vdev->vpaths[mac->vpath_no];
1879 status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1880 mac->macmask, duplicate_mode);
1881 if (status != VXGE_HW_OK) {
1882 vxge_debug_init(VXGE_ERR,
1883 "DA config add entry failed for vpath:%d",
1884 vpath->device_id);
1885 } else
1886 if (FALSE == vxge_mac_list_add(vpath, mac))
1887 status = -EPERM;
1888
1889 return status;
1890}
1891
1892int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1893{
1894 struct list_head *entry, *next;
1895 u64 del_mac = 0;
1896 u8 *mac_address = (u8 *) (&del_mac);
1897
1898 /* Copy the mac address to delete from the list */
1899 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1900
1901 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1902 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1903 list_del(entry);
1904 kfree((struct vxge_mac_addrs *)entry);
1905 vpath->mac_addr_cnt--;
1906
1907 /* Is this a multicast address */
1908 if (0x01 & mac->macaddr[0])
1909 vpath->mcast_addr_cnt--;
1910 return TRUE;
1911 }
1912 }
1913
1914 return FALSE;
1915}
1916/* delete a mac address from DA table */
1917enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1918{
1919 enum vxge_hw_status status = VXGE_HW_OK;
1920 struct vxge_vpath *vpath;
1921
1922 vpath = &vdev->vpaths[mac->vpath_no];
1923 status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1924 mac->macmask);
1925 if (status != VXGE_HW_OK) {
1926 vxge_debug_init(VXGE_ERR,
1927 "DA config delete entry failed for vpath:%d",
1928 vpath->device_id);
1929 } else
1930 vxge_mac_list_del(vpath, mac);
1931 return status;
1932}
1933
1934/* list all mac addresses from DA table */
1935enum vxge_hw_status
1936static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1937 struct macInfo *mac)
1938{
1939 enum vxge_hw_status status = VXGE_HW_OK;
1940 unsigned char macmask[ETH_ALEN];
1941 unsigned char macaddr[ETH_ALEN];
1942
1943 status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1944 macaddr, macmask);
1945 if (status != VXGE_HW_OK) {
1946 vxge_debug_init(VXGE_ERR,
1947 "DA config list entry failed for vpath:%d",
1948 vpath->device_id);
1949 return status;
1950 }
1951
1952 while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1953
1954 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1955 macaddr, macmask);
1956 if (status != VXGE_HW_OK)
1957 break;
1958 }
1959
1960 return status;
1961}
1962
1963/* Store all vlan ids from the list to the vid table */
1964enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1965{
1966 enum vxge_hw_status status = VXGE_HW_OK;
1967 struct vxgedev *vdev = vpath->vdev;
1968 u16 vid;
1969
1970 if (vdev->vlgrp && vpath->is_open) {
1971
1972 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1973 if (!vlan_group_get_device(vdev->vlgrp, vid))
1974 continue;
1975 /* Add these vlan to the vid table */
1976 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1977 }
1978 }
1979
1980 return status;
1981}
1982
1983/* Store all mac addresses from the list to the DA table */
1984enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1985{
1986 enum vxge_hw_status status = VXGE_HW_OK;
1987 struct macInfo mac_info;
1988 u8 *mac_address = NULL;
1989 struct list_head *entry, *next;
1990
1991 memset(&mac_info, 0, sizeof(struct macInfo));
1992
1993 if (vpath->is_open) {
1994
1995 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1996 mac_address =
1997 (u8 *)&
1998 ((struct vxge_mac_addrs *)entry)->macaddr;
1999 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
2000 ((struct vxge_mac_addrs *)entry)->state =
2001 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
2002 /* does this mac address already exist in da table? */
2003 status = vxge_search_mac_addr_in_da_table(vpath,
2004 &mac_info);
2005 if (status != VXGE_HW_OK) {
2006 /* Add this mac address to the DA table */
2007 status = vxge_hw_vpath_mac_addr_add(
2008 vpath->handle, mac_info.macaddr,
2009 mac_info.macmask,
2010 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2011 if (status != VXGE_HW_OK) {
2012 vxge_debug_init(VXGE_ERR,
2013 "DA add entry failed for vpath:%d",
2014 vpath->device_id);
2015 ((struct vxge_mac_addrs *)entry)->state
2016 = VXGE_LL_MAC_ADDR_IN_LIST;
2017 }
2018 }
2019 }
2020 }
2021
2022 return status;
2023}
2024
2025/* reset vpaths */
2026enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2027{
2028 int i;
2029 enum vxge_hw_status status = VXGE_HW_OK;
2030
2031 for (i = 0; i < vdev->no_of_vpath; i++)
2032 if (vdev->vpaths[i].handle) {
2033 if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2034 == VXGE_HW_OK) {
2035 if (is_vxge_card_up(vdev) &&
2036 vxge_hw_vpath_recover_from_reset(
2037 vdev->vpaths[i].handle)
2038 != VXGE_HW_OK) {
2039 vxge_debug_init(VXGE_ERR,
2040 "vxge_hw_vpath_recover_"
2041 "from_reset failed for vpath: "
2042 "%d", i);
2043 return status;
2044 }
2045 } else {
2046 vxge_debug_init(VXGE_ERR,
2047 "vxge_hw_vpath_reset failed for "
2048 "vpath:%d", i);
2049 return status;
2050 }
2051 }
2052 return status;
2053}
2054
2055/* close vpaths */
2056void vxge_close_vpaths(struct vxgedev *vdev, int index)
2057{
2058 int i;
2059 for (i = index; i < vdev->no_of_vpath; i++) {
2060 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2061 vxge_hw_vpath_close(vdev->vpaths[i].handle);
2062 vdev->stats.vpaths_open--;
2063 }
2064 vdev->vpaths[i].is_open = 0;
2065 vdev->vpaths[i].handle = NULL;
2066 }
2067}
2068
2069/* open vpaths */
2070int vxge_open_vpaths(struct vxgedev *vdev)
2071{
2072 enum vxge_hw_status status;
2073 int i;
2074 u32 vp_id = 0;
2075 struct vxge_hw_vpath_attr attr;
2076
2077 for (i = 0; i < vdev->no_of_vpath; i++) {
2078 vxge_assert(vdev->vpaths[i].is_configured);
2079 attr.vp_id = vdev->vpaths[i].device_id;
2080 attr.fifo_attr.callback = vxge_xmit_compl;
2081 attr.fifo_attr.txdl_term = vxge_tx_term;
2082 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2083 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2084
2085 attr.ring_attr.callback = vxge_rx_1b_compl;
2086 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2087 attr.ring_attr.rxd_term = vxge_rx_term;
2088 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2089 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2090
2091 vdev->vpaths[i].ring.ndev = vdev->ndev;
2092 vdev->vpaths[i].ring.pdev = vdev->pdev;
2093 status = vxge_hw_vpath_open(vdev->devh, &attr,
2094 &(vdev->vpaths[i].handle));
2095 if (status == VXGE_HW_OK) {
2096 vdev->vpaths[i].fifo.handle =
2097 (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2098 vdev->vpaths[i].ring.handle =
2099 (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2100 vdev->vpaths[i].fifo.tx_steering_type =
2101 vdev->config.tx_steering_type;
2102 vdev->vpaths[i].fifo.ndev = vdev->ndev;
2103 vdev->vpaths[i].fifo.pdev = vdev->pdev;
2104 vdev->vpaths[i].fifo.indicate_max_pkts =
2105 vdev->config.fifo_indicate_max_pkts;
2106 vdev->vpaths[i].ring.rx_vector_no = 0;
2107 vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2108 vdev->vpaths[i].is_open = 1;
2109 vdev->vp_handles[i] = vdev->vpaths[i].handle;
2110 vdev->vpaths[i].ring.gro_enable =
2111 vdev->config.gro_enable;
2112 vdev->vpaths[i].ring.vlan_tag_strip =
2113 vdev->vlan_tag_strip;
2114 vdev->stats.vpaths_open++;
2115 } else {
2116 vdev->stats.vpath_open_fail++;
2117 vxge_debug_init(VXGE_ERR,
2118 "%s: vpath: %d failed to open "
2119 "with status: %d",
2120 vdev->ndev->name, vdev->vpaths[i].device_id,
2121 status);
2122 vxge_close_vpaths(vdev, 0);
2123 return -EPERM;
2124 }
2125
2126 vp_id =
2127 ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2128 vpath->vp_id;
2129 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2130 }
2131 return VXGE_HW_OK;
2132}
2133
2134/*
2135 * vxge_isr_napi
2136 * @irq: the irq of the device.
2137 * @dev_id: a void pointer to the hldev structure of the Titan device
2138 * @ptregs: pointer to the registers pushed on the stack.
2139 *
2140 * This function is the ISR handler of the device when napi is enabled. It
2141 * identifies the reason for the interrupt and calls the relevant service
2142 * routines.
2143 */
2144static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2145{
703da5a1 2146 struct net_device *dev;
a5d165b5 2147 struct __vxge_hw_device *hldev;
703da5a1
RV		 2148 u64 reason;
2149 enum vxge_hw_status status;
a5d165b5 2150 struct vxgedev *vdev = (struct vxgedev *) dev_id;;
703da5a1
RV		 2151
2152 vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2153
a5d165b5
SH		 2154 dev = vdev->ndev;
2155 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
703da5a1
RV		 2156
2157 if (pci_channel_offline(vdev->pdev))
2158 return IRQ_NONE;
2159
2160 if (unlikely(!is_vxge_card_up(vdev)))
2161 return IRQ_NONE;
2162
2163 status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2164 &reason);
2165 if (status == VXGE_HW_OK) {
2166 vxge_hw_device_mask_all(hldev);
2167
2168 if (reason &
2169 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2170 vdev->vpaths_deployed >>
2171 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2172
2173 vxge_hw_device_clear_tx_rx(hldev);
2174 napi_schedule(&vdev->napi);
2175 vxge_debug_intr(VXGE_TRACE,
2176 "%s:%d Exiting...", __func__, __LINE__);
2177 return IRQ_HANDLED;
2178 } else
2179 vxge_hw_device_unmask_all(hldev);
2180 } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2181 (status == VXGE_HW_ERR_CRITICAL) ||
2182 (status == VXGE_HW_ERR_FIFO))) {
2183 vxge_hw_device_mask_all(hldev);
2184 vxge_hw_device_flush_io(hldev);
2185 return IRQ_HANDLED;
2186 } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2187 return IRQ_HANDLED;
2188
2189 vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__);
2190 return IRQ_NONE;
2191}
2192
2193#ifdef CONFIG_PCI_MSI
2194
2195static irqreturn_t
2196vxge_tx_msix_handle(int irq, void *dev_id)
2197{
2198 struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2199
2200 VXGE_COMPLETE_VPATH_TX(fifo);
2201
2202 return IRQ_HANDLED;
2203}
2204
2205static irqreturn_t
2206vxge_rx_msix_napi_handle(int irq, void *dev_id)
2207{
2208 struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2209
2210 /* MSIX_IDX for Rx is 1 */
2211 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2212 ring->rx_vector_no);
2213
2214 napi_schedule(&ring->napi);
2215 return IRQ_HANDLED;
2216}
2217
2218static irqreturn_t
2219vxge_alarm_msix_handle(int irq, void *dev_id)
2220{
2221 int i;
2222 enum vxge_hw_status status;
2223 struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2224 struct vxgedev *vdev = vpath->vdev;
b59c9457
SH		 2225 int msix_id = (vpath->handle->vpath->vp_id *
2226 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
703da5a1
RV		 2227
2228 for (i = 0; i < vdev->no_of_vpath; i++) {
b59c9457 2229 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
703da5a1
RV		 2230
2231 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2232 vdev->exec_mode);
2233 if (status == VXGE_HW_OK) {
2234
2235 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
b59c9457 2236 msix_id);
703da5a1
RV		 2237 continue;
2238 }
2239 vxge_debug_intr(VXGE_ERR,
2240 "%s: vxge_hw_vpath_alarm_process failed %x ",
2241 VXGE_DRIVER_NAME, status);
2242 }
2243 return IRQ_HANDLED;
2244}
2245
2246static int vxge_alloc_msix(struct vxgedev *vdev)
2247{
2248 int j, i, ret = 0;
b59c9457 2249 int msix_intr_vect = 0, temp;
703da5a1
RV		 2250 vdev->intr_cnt = 0;
2251
b59c9457 2252start:
703da5a1
RV		 2253 /* Tx/Rx MSIX Vectors count */
2254 vdev->intr_cnt = vdev->no_of_vpath * 2;
2255
2256 /* Alarm MSIX Vectors count */
2257 vdev->intr_cnt++;
2258
b59c9457 2259 vdev->entries = kzalloc(vdev->intr_cnt * sizeof(struct msix_entry),
703da5a1
RV		 2260 GFP_KERNEL);
2261 if (!vdev->entries) {
2262 vxge_debug_init(VXGE_ERR,
2263 "%s: memory allocation failed",
2264 VXGE_DRIVER_NAME);
cc413d90
MS		 2265 ret = -ENOMEM;
2266 goto alloc_entries_failed;
703da5a1
RV		 2267 }
2268
b59c9457
SH		 2269 vdev->vxge_entries =
2270 kzalloc(vdev->intr_cnt * sizeof(struct vxge_msix_entry),
2271 GFP_KERNEL);
703da5a1
RV		 2272 if (!vdev->vxge_entries) {
2273 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2274 VXGE_DRIVER_NAME);
cc413d90
MS		 2275 ret = -ENOMEM;
2276 goto alloc_vxge_entries_failed;
703da5a1
RV		 2277 }
2278
b59c9457 2279 for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
703da5a1
RV		 2280
2281 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2282
2283 /* Initialize the fifo vector */
2284 vdev->entries[j].entry = msix_intr_vect;
2285 vdev->vxge_entries[j].entry = msix_intr_vect;
2286 vdev->vxge_entries[j].in_use = 0;
2287 j++;
2288
2289 /* Initialize the ring vector */
2290 vdev->entries[j].entry = msix_intr_vect + 1;
2291 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2292 vdev->vxge_entries[j].in_use = 0;
2293 j++;
2294 }
2295
2296 /* Initialize the alarm vector */
b59c9457
SH		 2297 vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2298 vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
703da5a1
RV		 2299 vdev->vxge_entries[j].in_use = 0;
2300
b59c9457 2301 ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
703da5a1 2302
b59c9457 2303 if (ret > 0) {
703da5a1
RV		 2304 vxge_debug_init(VXGE_ERR,
2305 "%s: MSI-X enable failed for %d vectors, ret: %d",
b59c9457 2306 VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
cc413d90
MS		 2307 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2308 ret = -ENODEV;
2309 goto enable_msix_failed;
2310 }
2311
703da5a1
RV		 2312 kfree(vdev->entries);
2313 kfree(vdev->vxge_entries);
2314 vdev->entries = NULL;
2315 vdev->vxge_entries = NULL;
b59c9457
SH		 2316 /* Try with less no of vector by reducing no of vpaths count */
2317 temp = (ret - 1)/2;
2318 vxge_close_vpaths(vdev, temp);
2319 vdev->no_of_vpath = temp;
2320 goto start;
cc413d90
MS		 2321 } else if (ret < 0) {
2322 ret = -ENODEV;
2323 goto enable_msix_failed;
2324 }
703da5a1 2325 return 0;
cc413d90
MS		 2326
2327enable_msix_failed:
2328 kfree(vdev->vxge_entries);
2329alloc_vxge_entries_failed:
2330 kfree(vdev->entries);
2331alloc_entries_failed:
2332 return ret;
703da5a1
RV		 2333}
2334
2335static int vxge_enable_msix(struct vxgedev *vdev)
2336{
2337
2338 int i, ret = 0;
703da5a1 2339 /* 0 - Tx, 1 - Rx */
b59c9457
SH		 2340 int tim_msix_id[4] = {0, 1, 0, 0};
2341
703da5a1
RV		 2342 vdev->intr_cnt = 0;
2343
2344 /* allocate msix vectors */
2345 ret = vxge_alloc_msix(vdev);
2346 if (!ret) {
703da5a1
RV		 2347 for (i = 0; i < vdev->no_of_vpath; i++) {
2348
2349 /* If fifo or ring are not enabled
2350 the MSIX vector for that should be set to 0
2351 Hence initializeing this array to all 0s.
2352 */
b59c9457
SH		 2353 vdev->vpaths[i].ring.rx_vector_no =
2354 (vdev->vpaths[i].device_id *
2355 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
703da5a1 2356
b59c9457
SH		 2357 vxge_hw_vpath_msix_set(vdev->vpaths[i].handle,
2358 tim_msix_id, VXGE_ALARM_MSIX_ID);
703da5a1
RV		 2359 }
2360 }
2361
2362 return ret;
2363}
2364
2365static void vxge_rem_msix_isr(struct vxgedev *vdev)
2366{
2367 int intr_cnt;
2368
b59c9457 2369 for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
703da5a1
RV		 2370 intr_cnt++) {
2371 if (vdev->vxge_entries[intr_cnt].in_use) {
2372 synchronize_irq(vdev->entries[intr_cnt].vector);
2373 free_irq(vdev->entries[intr_cnt].vector,
2374 vdev->vxge_entries[intr_cnt].arg);
2375 vdev->vxge_entries[intr_cnt].in_use = 0;
2376 }
2377 }
2378
2379 kfree(vdev->entries);
2380 kfree(vdev->vxge_entries);
2381 vdev->entries = NULL;
2382 vdev->vxge_entries = NULL;
2383
2384 if (vdev->config.intr_type == MSI_X)
2385 pci_disable_msix(vdev->pdev);
2386}
2387#endif
2388
2389static void vxge_rem_isr(struct vxgedev *vdev)
2390{
2391 struct __vxge_hw_device *hldev;
2392 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2393
2394#ifdef CONFIG_PCI_MSI
2395 if (vdev->config.intr_type == MSI_X) {
2396 vxge_rem_msix_isr(vdev);
2397 } else
2398#endif
2399 if (vdev->config.intr_type == INTA) {
2400 synchronize_irq(vdev->pdev->irq);
a5d165b5 2401 free_irq(vdev->pdev->irq, vdev);
703da5a1
RV		 2402 }
2403}
2404
2405static int vxge_add_isr(struct vxgedev *vdev)
2406{
2407 int ret = 0;
703da5a1
RV		 2408#ifdef CONFIG_PCI_MSI
2409 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
703da5a1
RV		 2410 int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2411
2412 if (vdev->config.intr_type == MSI_X)
2413 ret = vxge_enable_msix(vdev);
2414
2415 if (ret) {
2416 vxge_debug_init(VXGE_ERR,
2417 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
eb5f10c2
SH		 2418 vxge_debug_init(VXGE_ERR,
2419 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2420 vdev->config.intr_type = INTA;
703da5a1
RV		 2421 }
2422
2423 if (vdev->config.intr_type == MSI_X) {
2424 for (intr_idx = 0;
2425 intr_idx < (vdev->no_of_vpath *
2426 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2427
2428 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2429 irq_req = 0;
2430
2431 switch (msix_idx) {
2432 case 0:
2433 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
b59c9457
SH		 2434 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2435 vdev->ndev->name,
2436 vdev->entries[intr_cnt].entry,
2437 pci_fun, vp_idx);
703da5a1
RV		 2438 ret = request_irq(
2439 vdev->entries[intr_cnt].vector,
2440 vxge_tx_msix_handle, 0,
2441 vdev->desc[intr_cnt],
2442 &vdev->vpaths[vp_idx].fifo);
2443 vdev->vxge_entries[intr_cnt].arg =
2444 &vdev->vpaths[vp_idx].fifo;
2445 irq_req = 1;
2446 break;
2447 case 1:
2448 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
b59c9457
SH		 2449 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2450 vdev->ndev->name,
2451 vdev->entries[intr_cnt].entry,
2452 pci_fun, vp_idx);
703da5a1
RV		 2453 ret = request_irq(
2454 vdev->entries[intr_cnt].vector,
2455 vxge_rx_msix_napi_handle,
2456 0,
2457 vdev->desc[intr_cnt],
2458 &vdev->vpaths[vp_idx].ring);
2459 vdev->vxge_entries[intr_cnt].arg =
2460 &vdev->vpaths[vp_idx].ring;
2461 irq_req = 1;
2462 break;
2463 }
2464
2465 if (ret) {
2466 vxge_debug_init(VXGE_ERR,
2467 "%s: MSIX - %d Registration failed",
2468 vdev->ndev->name, intr_cnt);
2469 vxge_rem_msix_isr(vdev);
eb5f10c2
SH		 2470 vdev->config.intr_type = INTA;
2471 vxge_debug_init(VXGE_ERR,
2472 "%s: Defaulting to INTA"
2473 , vdev->ndev->name);
703da5a1 2474 goto INTA_MODE;
703da5a1
RV		 2475 }
2476
2477 if (irq_req) {
2478 /* We requested for this msix interrupt */
2479 vdev->vxge_entries[intr_cnt].in_use = 1;
b59c9457
SH		 2480 msix_idx += vdev->vpaths[vp_idx].device_id *
2481 VXGE_HW_VPATH_MSIX_ACTIVE;
703da5a1
RV		 2482 vxge_hw_vpath_msix_unmask(
2483 vdev->vpaths[vp_idx].handle,
b59c9457 2484 msix_idx);
703da5a1
RV		 2485 intr_cnt++;
2486 }
2487
2488 /* Point to next vpath handler */
8e95a202
JP		 2489 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2490 (vp_idx < (vdev->no_of_vpath - 1)))
2491 vp_idx++;
703da5a1
RV		 2492 }
2493
b59c9457 2494 intr_cnt = vdev->no_of_vpath * 2;
703da5a1 2495 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
b59c9457
SH		 2496 "%s:vxge:MSI-X %d - Alarm - fn:%d",
2497 vdev->ndev->name,
2498 vdev->entries[intr_cnt].entry,
2499 pci_fun);
703da5a1
RV		 2500 /* For Alarm interrupts */
2501 ret = request_irq(vdev->entries[intr_cnt].vector,
2502 vxge_alarm_msix_handle, 0,
2503 vdev->desc[intr_cnt],
b59c9457 2504 &vdev->vpaths[0]);
703da5a1
RV		 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);
eb5f10c2
SH		 2510 vdev->config.intr_type = INTA;
2511 vxge_debug_init(VXGE_ERR,
2512 "%s: Defaulting to INTA",
2513 vdev->ndev->name);
703da5a1 2514 goto INTA_MODE;
703da5a1
RV		 2515 }
2516
b59c9457
SH		 2517 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2518 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
703da5a1 2519 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
b59c9457 2520 msix_idx);
703da5a1 2521 vdev->vxge_entries[intr_cnt].in_use = 1;
b59c9457 2522 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
703da5a1
RV		 2523 }
2524INTA_MODE:
2525#endif
703da5a1
RV		 2526
2527 if (vdev->config.intr_type == INTA) {
b59c9457
SH		 2528 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2529 "%s:vxge:INTA", vdev->ndev->name);
eb5f10c2
SH		 2530 vxge_hw_device_set_intr_type(vdev->devh,
2531 VXGE_HW_INTR_MODE_IRQLINE);
2532 vxge_hw_vpath_tti_ci_set(vdev->devh,
2533 vdev->vpaths[0].device_id);
703da5a1
RV		 2534 ret = request_irq((int) vdev->pdev->irq,
2535 vxge_isr_napi,
a5d165b5 2536 IRQF_SHARED, vdev->desc[0], vdev);
703da5a1
RV		 2537 if (ret) {
2538 vxge_debug_init(VXGE_ERR,
2539 "%s %s-%d: ISR registration failed",
2540 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2541 return -ENODEV;
2542 }
2543 vxge_debug_init(VXGE_TRACE,
2544 "new %s-%d line allocated",
2545 "IRQ", vdev->pdev->irq);
2546 }
2547
2548 return VXGE_HW_OK;
2549}
2550
2551static void vxge_poll_vp_reset(unsigned long data)
2552{
2553 struct vxgedev *vdev = (struct vxgedev *)data;
2554 int i, j = 0;
2555
2556 for (i = 0; i < vdev->no_of_vpath; i++) {
2557 if (test_bit(i, &vdev->vp_reset)) {
2558 vxge_reset_vpath(vdev, i);
2559 j++;
2560 }
2561 }
2562 if (j && (vdev->config.intr_type != MSI_X)) {
2563 vxge_hw_device_unmask_all(vdev->devh);
2564 vxge_hw_device_flush_io(vdev->devh);
2565 }
2566
2567 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2568}
2569
2570static void vxge_poll_vp_lockup(unsigned long data)
2571{
2572 struct vxgedev *vdev = (struct vxgedev *)data;
2573 int i;
2574 struct vxge_ring *ring;
2575 enum vxge_hw_status status = VXGE_HW_OK;
2576
2577 for (i = 0; i < vdev->no_of_vpath; i++) {
2578 ring = &vdev->vpaths[i].ring;
2579 /* Did this vpath received any packets */
2580 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2581 status = vxge_hw_vpath_check_leak(ring->handle);
2582
2583 /* Did it received any packets last time */
2584 if ((VXGE_HW_FAIL == status) &&
2585 (VXGE_HW_FAIL == ring->last_status)) {
2586
2587 /* schedule vpath reset */
2588 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2589
2590 /* disable interrupts for this vpath */
2591 vxge_vpath_intr_disable(vdev, i);
2592
2593 /* stop the queue for this vpath */
2594 vxge_stop_tx_queue(&vdev->vpaths[i].
2595 fifo);
2596 continue;
2597 }
2598 }
2599 }
2600 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2601 ring->last_status = status;
2602 }
2603
2604 /* Check every 1 milli second */
2605 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2606}
2607
2608/**
2609 * vxge_open
2610 * @dev: pointer to the device structure.
2611 *
2612 * This function is the open entry point of the driver. It mainly calls a
2613 * function to allocate Rx buffers and inserts them into the buffer
2614 * descriptors and then enables the Rx part of the NIC.
2615 * Return value: '0' on success and an appropriate (-)ve integer as
2616 * defined in errno.h file on failure.
2617 */
2618int
2619vxge_open(struct net_device *dev)
2620{
2621 enum vxge_hw_status status;
2622 struct vxgedev *vdev;
2623 struct __vxge_hw_device *hldev;
2624 int ret = 0;
2625 int i;
2626 u64 val64, function_mode;
2627 vxge_debug_entryexit(VXGE_TRACE,
2628 "%s: %s:%d", dev->name, __func__, __LINE__);
2629
2630 vdev = (struct vxgedev *)netdev_priv(dev);
2631 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2632 function_mode = vdev->config.device_hw_info.function_mode;
2633
2634 /* make sure you have link off by default every time Nic is
2635 * initialized */
2636 netif_carrier_off(dev);
2637
703da5a1
RV		 2638 /* Open VPATHs */
2639 status = vxge_open_vpaths(vdev);
2640 if (status != VXGE_HW_OK) {
2641 vxge_debug_init(VXGE_ERR,
2642 "%s: fatal: Vpath open failed", vdev->ndev->name);
2643 ret = -EPERM;
2644 goto out0;
2645 }
2646
2647 vdev->mtu = dev->mtu;
2648
2649 status = vxge_add_isr(vdev);
2650 if (status != VXGE_HW_OK) {
2651 vxge_debug_init(VXGE_ERR,
2652 "%s: fatal: ISR add failed", dev->name);
2653 ret = -EPERM;
2654 goto out1;
2655 }
2656
2657
2658 if (vdev->config.intr_type != MSI_X) {
2659 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2660 vdev->config.napi_weight);
2661 napi_enable(&vdev->napi);
a5d165b5
SH		 2662 for (i = 0; i < vdev->no_of_vpath; i++)
2663 vdev->vpaths[i].ring.napi_p = &vdev->napi;
703da5a1
RV		 2664 } else {
2665 for (i = 0; i < vdev->no_of_vpath; i++) {
2666 netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2667 vxge_poll_msix, vdev->config.napi_weight);
2668 napi_enable(&vdev->vpaths[i].ring.napi);
a5d165b5
SH		 2669 vdev->vpaths[i].ring.napi_p =
2670 &vdev->vpaths[i].ring.napi;
703da5a1
RV		 2671 }
2672 }
2673
2674 /* configure RTH */
2675 if (vdev->config.rth_steering) {
2676 status = vxge_rth_configure(vdev);
2677 if (status != VXGE_HW_OK) {
2678 vxge_debug_init(VXGE_ERR,
2679 "%s: fatal: RTH configuration failed",
2680 dev->name);
2681 ret = -EPERM;
2682 goto out2;
2683 }
2684 }
2685
2686 for (i = 0; i < vdev->no_of_vpath; i++) {
2687 /* set initial mtu before enabling the device */
2688 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2689 vdev->mtu);
2690 if (status != VXGE_HW_OK) {
2691 vxge_debug_init(VXGE_ERR,
2692 "%s: fatal: can not set new MTU", dev->name);
2693 ret = -EPERM;
2694 goto out2;
2695 }
2696 }
2697
2698 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2699 vxge_debug_init(vdev->level_trace,
2700 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2701 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2702
2703 /* Reprogram the DA table with populated mac addresses */
2704 for (i = 0; i < vdev->no_of_vpath; i++) {
2705 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2706 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2707 }
2708
2709 /* Enable vpath to sniff all unicast/multicast traffic that not
2710 * addressed to them. We allow promiscous mode for PF only
2711 */
2712
2713 val64 = 0;
2714 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2715 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2716
2717 vxge_hw_mgmt_reg_write(vdev->devh,
2718 vxge_hw_mgmt_reg_type_mrpcim,
2719 0,
2720 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2721 rxmac_authorize_all_addr),
2722 val64);
2723
2724 vxge_hw_mgmt_reg_write(vdev->devh,
2725 vxge_hw_mgmt_reg_type_mrpcim,
2726 0,
2727 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2728 rxmac_authorize_all_vid),
2729 val64);
2730
2731 vxge_set_multicast(dev);
2732
2733 /* Enabling Bcast and mcast for all vpath */
2734 for (i = 0; i < vdev->no_of_vpath; i++) {
2735 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2736 if (status != VXGE_HW_OK)
2737 vxge_debug_init(VXGE_ERR,
2738 "%s : Can not enable bcast for vpath "
2739 "id %d", dev->name, i);
2740 if (vdev->config.addr_learn_en) {
2741 status =
2742 vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2743 if (status != VXGE_HW_OK)
2744 vxge_debug_init(VXGE_ERR,
2745 "%s : Can not enable mcast for vpath "
2746 "id %d", dev->name, i);
2747 }
2748 }
2749
2750 vxge_hw_device_setpause_data(vdev->devh, 0,
2751 vdev->config.tx_pause_enable,
2752 vdev->config.rx_pause_enable);
2753
2754 if (vdev->vp_reset_timer.function == NULL)
2755 vxge_os_timer(vdev->vp_reset_timer,
2756 vxge_poll_vp_reset, vdev, (HZ/2));
2757
2758 if (vdev->vp_lockup_timer.function == NULL)
2759 vxge_os_timer(vdev->vp_lockup_timer,
2760 vxge_poll_vp_lockup, vdev, (HZ/2));
2761
2762 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2763
2764 smp_wmb();
2765
2766 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2767 netif_carrier_on(vdev->ndev);
2768 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2769 vdev->stats.link_up++;
2770 }
2771
2772 vxge_hw_device_intr_enable(vdev->devh);
2773
2774 smp_wmb();
2775
2776 for (i = 0; i < vdev->no_of_vpath; i++) {
2777 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2778 smp_wmb();
2779 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2780 }
2781
2782 vxge_start_all_tx_queue(vdev);
2783 goto out0;
2784
2785out2:
2786 vxge_rem_isr(vdev);
2787
2788 /* Disable napi */
2789 if (vdev->config.intr_type != MSI_X)
2790 napi_disable(&vdev->napi);
2791 else {
2792 for (i = 0; i < vdev->no_of_vpath; i++)
2793 napi_disable(&vdev->vpaths[i].ring.napi);
2794 }
2795
2796out1:
2797 vxge_close_vpaths(vdev, 0);
2798out0:
2799 vxge_debug_entryexit(VXGE_TRACE,
2800 "%s: %s:%d Exiting...",
2801 dev->name, __func__, __LINE__);
2802 return ret;
2803}
2804
2805/* Loop throught the mac address list and delete all the entries */
2806void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2807{
2808
2809 struct list_head *entry, *next;
2810 if (list_empty(&vpath->mac_addr_list))
2811 return;
2812
2813 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2814 list_del(entry);
2815 kfree((struct vxge_mac_addrs *)entry);
2816 }
2817}
2818
2819static void vxge_napi_del_all(struct vxgedev *vdev)
2820{
2821 int i;
2822 if (vdev->config.intr_type != MSI_X)
2823 netif_napi_del(&vdev->napi);
2824 else {
2825 for (i = 0; i < vdev->no_of_vpath; i++)
2826 netif_napi_del(&vdev->vpaths[i].ring.napi);
2827 }
703da5a1
RV		 2828}
2829
2830int do_vxge_close(struct net_device *dev, int do_io)
2831{
2832 enum vxge_hw_status status;
2833 struct vxgedev *vdev;
2834 struct __vxge_hw_device *hldev;
2835 int i;
2836 u64 val64, vpath_vector;
2837 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2838 dev->name, __func__, __LINE__);
2839
2840 vdev = (struct vxgedev *)netdev_priv(dev);
2841 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2842
bd9ee680
SH		 2843 if (unlikely(!is_vxge_card_up(vdev)))
2844 return 0;
2845
703da5a1
RV		 2846 /* If vxge_handle_crit_err task is executing,
2847 * wait till it completes. */
2848 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2849 msleep(50);
2850
2851 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2852 if (do_io) {
2853 /* Put the vpath back in normal mode */
2854 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2855 status = vxge_hw_mgmt_reg_read(vdev->devh,
2856 vxge_hw_mgmt_reg_type_mrpcim,
2857 0,
2858 (ulong)offsetof(
2859 struct vxge_hw_mrpcim_reg,
2860 rts_mgr_cbasin_cfg),
2861 &val64);
2862
2863 if (status == VXGE_HW_OK) {
2864 val64 &= ~vpath_vector;
2865 status = vxge_hw_mgmt_reg_write(vdev->devh,
2866 vxge_hw_mgmt_reg_type_mrpcim,
2867 0,
2868 (ulong)offsetof(
2869 struct vxge_hw_mrpcim_reg,
2870 rts_mgr_cbasin_cfg),
2871 val64);
2872 }
2873
2874 /* Remove the function 0 from promiscous mode */
2875 vxge_hw_mgmt_reg_write(vdev->devh,
2876 vxge_hw_mgmt_reg_type_mrpcim,
2877 0,
2878 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2879 rxmac_authorize_all_addr),
2880 0);
2881
2882 vxge_hw_mgmt_reg_write(vdev->devh,
2883 vxge_hw_mgmt_reg_type_mrpcim,
2884 0,
2885 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2886 rxmac_authorize_all_vid),
2887 0);
2888
2889 smp_wmb();
2890 }
2891 del_timer_sync(&vdev->vp_lockup_timer);
2892
2893 del_timer_sync(&vdev->vp_reset_timer);
2894
2895 /* Disable napi */
2896 if (vdev->config.intr_type != MSI_X)
2897 napi_disable(&vdev->napi);
2898 else {
2899 for (i = 0; i < vdev->no_of_vpath; i++)
2900 napi_disable(&vdev->vpaths[i].ring.napi);
2901 }
2902
2903 netif_carrier_off(vdev->ndev);
2904 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2905 vxge_stop_all_tx_queue(vdev);
2906
2907 /* Note that at this point xmit() is stopped by upper layer */
2908 if (do_io)
2909 vxge_hw_device_intr_disable(vdev->devh);
2910
2911 mdelay(1000);
2912
2913 vxge_rem_isr(vdev);
2914
2915 vxge_napi_del_all(vdev);
2916
2917 if (do_io)
2918 vxge_reset_all_vpaths(vdev);
2919
2920 vxge_close_vpaths(vdev, 0);
2921
2922 vxge_debug_entryexit(VXGE_TRACE,
2923 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
2924
703da5a1
RV		 2925 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2926
2927 return 0;
2928}
2929
2930/**
2931 * vxge_close
2932 * @dev: device pointer.
2933 *
2934 * This is the stop entry point of the driver. It needs to undo exactly
2935 * whatever was done by the open entry point, thus it's usually referred to
2936 * as the close function.Among other things this function mainly stops the
2937 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2938 * Return value: '0' on success and an appropriate (-)ve integer as
2939 * defined in errno.h file on failure.
2940 */
2941int
2942vxge_close(struct net_device *dev)
2943{
2944 do_vxge_close(dev, 1);
2945 return 0;
2946}
2947
2948/**
2949 * vxge_change_mtu
2950 * @dev: net device pointer.
2951 * @new_mtu :the new MTU size for the device.
2952 *
2953 * A driver entry point to change MTU size for the device. Before changing
2954 * the MTU the device must be stopped.
2955 */
2956static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2957{
2958 struct vxgedev *vdev = netdev_priv(dev);
2959
2960 vxge_debug_entryexit(vdev->level_trace,
2961 "%s:%d", __func__, __LINE__);
2962 if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2963 vxge_debug_init(vdev->level_err,
2964 "%s: mtu size is invalid", dev->name);
2965 return -EPERM;
2966 }
2967
2968 /* check if device is down already */
2969 if (unlikely(!is_vxge_card_up(vdev))) {
2970 /* just store new value, will use later on open() */
2971 dev->mtu = new_mtu;
2972 vxge_debug_init(vdev->level_err,
2973 "%s", "device is down on MTU change");
2974 return 0;
2975 }
2976
2977 vxge_debug_init(vdev->level_trace,
2978 "trying to apply new MTU %d", new_mtu);
2979
2980 if (vxge_close(dev))
2981 return -EIO;
2982
2983 dev->mtu = new_mtu;
2984 vdev->mtu = new_mtu;
2985
2986 if (vxge_open(dev))
2987 return -EIO;
2988
2989 vxge_debug_init(vdev->level_trace,
2990 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2991
2992 vxge_debug_entryexit(vdev->level_trace,
2993 "%s:%d Exiting...", __func__, __LINE__);
2994
2995 return 0;
2996}
2997
2998/**
2999 * vxge_get_stats
3000 * @dev: pointer to the device structure
3001 *
3002 * Updates the device statistics structure. This function updates the device
3003 * statistics structure in the net_device structure and returns a pointer
3004 * to the same.
3005 */
3006static struct net_device_stats *
3007vxge_get_stats(struct net_device *dev)
3008{
3009 struct vxgedev *vdev;
3010 struct net_device_stats *net_stats;
3011 int k;
3012
3013 vdev = netdev_priv(dev);
3014
3015 net_stats = &vdev->stats.net_stats;
3016
3017 memset(net_stats, 0, sizeof(struct net_device_stats));
3018
3019 for (k = 0; k < vdev->no_of_vpath; k++) {
3020 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3021 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3022 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3023 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3024 net_stats->rx_dropped +=
3025 vdev->vpaths[k].ring.stats.rx_dropped;
3026
3027 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3028 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3029 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3030 }
3031
3032 return net_stats;
3033}
3034
3035/**
3036 * vxge_ioctl
3037 * @dev: Device pointer.
3038 * @ifr: An IOCTL specific structure, that can contain a pointer to
3039 * a proprietary structure used to pass information to the driver.
3040 * @cmd: This is used to distinguish between the different commands that
3041 * can be passed to the IOCTL functions.
3042 *
3043 * Entry point for the Ioctl.
3044 */
3045static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3046{
3047 return -EOPNOTSUPP;
3048}
3049
3050/**
3051 * vxge_tx_watchdog
3052 * @dev: pointer to net device structure
3053 *
3054 * Watchdog for transmit side.
3055 * This function is triggered if the Tx Queue is stopped
3056 * for a pre-defined amount of time when the Interface is still up.
3057 */
3058static void
3059vxge_tx_watchdog(struct net_device *dev)
3060{
3061 struct vxgedev *vdev;
3062
3063 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3064
3065 vdev = (struct vxgedev *)netdev_priv(dev);
3066
3067 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3068
3069 vxge_reset(vdev);
3070 vxge_debug_entryexit(VXGE_TRACE,
3071 "%s:%d Exiting...", __func__, __LINE__);
3072}
3073
3074/**
3075 * vxge_vlan_rx_register
3076 * @dev: net device pointer.
3077 * @grp: vlan group
3078 *
3079 * Vlan group registration
3080 */
3081static void
3082vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3083{
3084 struct vxgedev *vdev;
3085 struct vxge_vpath *vpath;
3086 int vp;
3087 u64 vid;
3088 enum vxge_hw_status status;
3089 int i;
3090
3091 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3092
3093 vdev = (struct vxgedev *)netdev_priv(dev);
3094
3095 vpath = &vdev->vpaths[0];
3096 if ((NULL == grp) && (vpath->is_open)) {
3097 /* Get the first vlan */
3098 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3099
3100 while (status == VXGE_HW_OK) {
3101
3102 /* Delete this vlan from the vid table */
3103 for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3104 vpath = &vdev->vpaths[vp];
3105 if (!vpath->is_open)
3106 continue;
3107
3108 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3109 }
3110
3111 /* Get the next vlan to be deleted */
3112 vpath = &vdev->vpaths[0];
3113 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3114 }
3115 }
3116
3117 vdev->vlgrp = grp;
3118
3119 for (i = 0; i < vdev->no_of_vpath; i++) {
3120 if (vdev->vpaths[i].is_configured)
3121 vdev->vpaths[i].ring.vlgrp = grp;
3122 }
3123
3124 vxge_debug_entryexit(VXGE_TRACE,
3125 "%s:%d Exiting...", __func__, __LINE__);
3126}
3127
3128/**
3129 * vxge_vlan_rx_add_vid
3130 * @dev: net device pointer.
3131 * @vid: vid
3132 *
3133 * Add the vlan id to the devices vlan id table
3134 */
3135static void
3136vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3137{
3138 struct vxgedev *vdev;
3139 struct vxge_vpath *vpath;
3140 int vp_id;
3141
3142 vdev = (struct vxgedev *)netdev_priv(dev);
3143
3144 /* Add these vlan to the vid table */
3145 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3146 vpath = &vdev->vpaths[vp_id];
3147 if (!vpath->is_open)
3148 continue;
3149 vxge_hw_vpath_vid_add(vpath->handle, vid);
3150 }
3151}
3152
3153/**
3154 * vxge_vlan_rx_add_vid
3155 * @dev: net device pointer.
3156 * @vid: vid
3157 *
3158 * Remove the vlan id from the device's vlan id table
3159 */
3160static void
3161vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3162{
3163 struct vxgedev *vdev;
3164 struct vxge_vpath *vpath;
3165 int vp_id;
3166
3167 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3168
3169 vdev = (struct vxgedev *)netdev_priv(dev);
3170
3171 vlan_group_set_device(vdev->vlgrp, vid, NULL);
3172
3173 /* Delete this vlan from the vid table */
3174 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3175 vpath = &vdev->vpaths[vp_id];
3176 if (!vpath->is_open)
3177 continue;
3178 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3179 }
3180 vxge_debug_entryexit(VXGE_TRACE,
3181 "%s:%d Exiting...", __func__, __LINE__);
3182}
3183
3184static const struct net_device_ops vxge_netdev_ops = {
3185 .ndo_open = vxge_open,
3186 .ndo_stop = vxge_close,
3187 .ndo_get_stats = vxge_get_stats,
3188 .ndo_start_xmit = vxge_xmit,
3189 .ndo_validate_addr = eth_validate_addr,
3190 .ndo_set_multicast_list = vxge_set_multicast,
3191
3192 .ndo_do_ioctl = vxge_ioctl,
3193
3194 .ndo_set_mac_address = vxge_set_mac_addr,
3195 .ndo_change_mtu = vxge_change_mtu,
3196 .ndo_vlan_rx_register = vxge_vlan_rx_register,
3197 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3198 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3199
3200 .ndo_tx_timeout = vxge_tx_watchdog,
3201#ifdef CONFIG_NET_POLL_CONTROLLER
3202 .ndo_poll_controller = vxge_netpoll,
3203#endif
3204};
3205
3206int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3207 struct vxge_config *config,
3208 int high_dma, int no_of_vpath,
3209 struct vxgedev **vdev_out)
3210{
3211 struct net_device *ndev;
3212 enum vxge_hw_status status = VXGE_HW_OK;
3213 struct vxgedev *vdev;
3214 int i, ret = 0, no_of_queue = 1;
3215 u64 stat;
3216
3217 *vdev_out = NULL;
3218 if (config->tx_steering_type == TX_MULTIQ_STEERING)
3219 no_of_queue = no_of_vpath;
3220
3221 ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3222 no_of_queue);
3223 if (ndev == NULL) {
3224 vxge_debug_init(
3225 vxge_hw_device_trace_level_get(hldev),
3226 "%s : device allocation failed", __func__);
3227 ret = -ENODEV;
3228 goto _out0;
3229 }
3230
3231 vxge_debug_entryexit(
3232 vxge_hw_device_trace_level_get(hldev),
3233 "%s: %s:%d Entering...",
3234 ndev->name, __func__, __LINE__);
3235
3236 vdev = netdev_priv(ndev);
3237 memset(vdev, 0, sizeof(struct vxgedev));
3238
3239 vdev->ndev = ndev;
3240 vdev->devh = hldev;
3241 vdev->pdev = hldev->pdev;
3242 memcpy(&vdev->config, config, sizeof(struct vxge_config));
3243 vdev->rx_csum = 1; /* Enable Rx CSUM by default. */
3244
3245 SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3246
3247 ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3248 NETIF_F_HW_VLAN_FILTER;
3249 /* Driver entry points */
3250 ndev->irq = vdev->pdev->irq;
3251 ndev->base_addr = (unsigned long) hldev->bar0;
3252
3253 ndev->netdev_ops = &vxge_netdev_ops;
3254
3255 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3256
3257 initialize_ethtool_ops(ndev);
3258
3259 /* Allocate memory for vpath */
3260 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3261 no_of_vpath, GFP_KERNEL);
3262 if (!vdev->vpaths) {
3263 vxge_debug_init(VXGE_ERR,
3264 "%s: vpath memory allocation failed",
3265 vdev->ndev->name);
3266 ret = -ENODEV;
3267 goto _out1;
3268 }
3269
3270 ndev->features |= NETIF_F_SG;
3271
3272 ndev->features |= NETIF_F_HW_CSUM;
3273 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3274 "%s : checksuming enabled", __func__);
3275
3276 if (high_dma) {
3277 ndev->features |= NETIF_F_HIGHDMA;
3278 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3279 "%s : using High DMA", __func__);
3280 }
3281
3282 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3283
3284 if (vdev->config.gro_enable)
3285 ndev->features |= NETIF_F_GRO;
3286
3287 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3288 ndev->real_num_tx_queues = no_of_vpath;
3289
3290#ifdef NETIF_F_LLTX
3291 ndev->features |= NETIF_F_LLTX;
3292#endif
3293
3294 for (i = 0; i < no_of_vpath; i++)
3295 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3296
3297 if (register_netdev(ndev)) {
3298 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3299 "%s: %s : device registration failed!",
3300 ndev->name, __func__);
3301 ret = -ENODEV;
3302 goto _out2;
3303 }
3304
3305 /* Set the factory defined MAC address initially */
3306 ndev->addr_len = ETH_ALEN;
3307
3308 /* Make Link state as off at this point, when the Link change
3309 * interrupt comes the state will be automatically changed to
3310 * the right state.
3311 */
3312 netif_carrier_off(ndev);
3313
3314 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3315 "%s: Ethernet device registered",
3316 ndev->name);
3317
3318 *vdev_out = vdev;
3319
3320 /* Resetting the Device stats */
3321 status = vxge_hw_mrpcim_stats_access(
3322 hldev,
3323 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3324 0,
3325 0,
3326 &stat);
3327
3328 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3329 vxge_debug_init(
3330 vxge_hw_device_trace_level_get(hldev),
3331 "%s: device stats clear returns"
3332 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3333
3334 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3335 "%s: %s:%d Exiting...",
3336 ndev->name, __func__, __LINE__);
3337
3338 return ret;
3339_out2:
3340 kfree(vdev->vpaths);
3341_out1:
3342 free_netdev(ndev);
3343_out0:
3344 return ret;
3345}
3346
3347/*
3348 * vxge_device_unregister
3349 *
3350 * This function will unregister and free network device
3351 */
3352void
3353vxge_device_unregister(struct __vxge_hw_device *hldev)
3354{
3355 struct vxgedev *vdev;
3356 struct net_device *dev;
3357 char buf[IFNAMSIZ];
3358#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3359 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3360 u32 level_trace;
3361#endif
3362
3363 dev = hldev->ndev;
3364 vdev = netdev_priv(dev);
3365#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3366 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3367 level_trace = vdev->level_trace;
3368#endif
3369 vxge_debug_entryexit(level_trace,
3370 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3371
3372 memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3373
3374 /* in 2.6 will call stop() if device is up */
3375 unregister_netdev(dev);
3376
3377 flush_scheduled_work();
3378
3379 vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3380 vxge_debug_entryexit(level_trace,
3381 "%s: %s:%d Exiting...", buf, __func__, __LINE__);
3382}
3383
3384/*
3385 * vxge_callback_crit_err
3386 *
3387 * This function is called by the alarm handler in interrupt context.
3388 * Driver must analyze it based on the event type.
3389 */
3390static void
3391vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3392 enum vxge_hw_event type, u64 vp_id)
3393{
3394 struct net_device *dev = hldev->ndev;
3395 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3396 int vpath_idx;
3397
3398 vxge_debug_entryexit(vdev->level_trace,
3399 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3400
3401 /* Note: This event type should be used for device wide
3402 * indications only - Serious errors, Slot freeze and critical errors
3403 */
3404 vdev->cric_err_event = type;
3405
3406 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3407 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3408 break;
3409
3410 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3411 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3412 vxge_debug_init(VXGE_ERR,
3413 "%s: Slot is frozen", vdev->ndev->name);
3414 } else if (type == VXGE_HW_EVENT_SERR) {
3415 vxge_debug_init(VXGE_ERR,
3416 "%s: Encountered Serious Error",
3417 vdev->ndev->name);
3418 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3419 vxge_debug_init(VXGE_ERR,
3420 "%s: Encountered Critical Error",
3421 vdev->ndev->name);
3422 }
3423
3424 if ((type == VXGE_HW_EVENT_SERR) ||
3425 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3426 if (unlikely(vdev->exec_mode))
3427 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3428 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3429 vxge_hw_device_mask_all(hldev);
3430 if (unlikely(vdev->exec_mode))
3431 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3432 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3433 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3434
3435 if (unlikely(vdev->exec_mode))
3436 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3437 else {
3438 /* check if this vpath is already set for reset */
3439 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3440
3441 /* disable interrupts for this vpath */
3442 vxge_vpath_intr_disable(vdev, vpath_idx);
3443
3444 /* stop the queue for this vpath */
3445 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3446 fifo);
3447 }
3448 }
3449 }
3450
3451 vxge_debug_entryexit(vdev->level_trace,
3452 "%s: %s:%d Exiting...",
3453 vdev->ndev->name, __func__, __LINE__);
3454}
3455
3456static void verify_bandwidth(void)
3457{
3458 int i, band_width, total = 0, equal_priority = 0;
3459
3460 /* 1. If user enters 0 for some fifo, give equal priority to all */
3461 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3462 if (bw_percentage[i] == 0) {
3463 equal_priority = 1;
3464 break;
3465 }
3466 }
3467
3468 if (!equal_priority) {
3469 /* 2. If sum exceeds 100, give equal priority to all */
3470 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3471 if (bw_percentage[i] == 0xFF)
3472 break;
3473
3474 total += bw_percentage[i];
3475 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3476 equal_priority = 1;
3477 break;
3478 }
3479 }
3480 }
3481
3482 if (!equal_priority) {
3483 /* Is all the bandwidth consumed? */
3484 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3485 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3486 /* Split rest of bw equally among next VPs*/
3487 band_width =
3488 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3489 (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3490 if (band_width < 2) /* min of 2% */
3491 equal_priority = 1;
3492 else {
3493 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3494 i++)
3495 bw_percentage[i] =
3496 band_width;
3497 }
3498 }
3499 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3500 equal_priority = 1;
3501 }
3502
3503 if (equal_priority) {
3504 vxge_debug_init(VXGE_ERR,
3505 "%s: Assigning equal bandwidth to all the vpaths",
3506 VXGE_DRIVER_NAME);
3507 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3508 VXGE_HW_MAX_VIRTUAL_PATHS;
3509 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3510 bw_percentage[i] = bw_percentage[0];
3511 }
703da5a1
RV		 3512}
3513
3514/*
3515 * Vpath configuration
3516 */
3517static int __devinit vxge_config_vpaths(
3518 struct vxge_hw_device_config *device_config,
3519 u64 vpath_mask, struct vxge_config *config_param)
3520{
3521 int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3522 u32 txdl_size, txdl_per_memblock;
3523
3524 temp = driver_config->vpath_per_dev;
3525 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3526 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3527 /* No more CPU. Return vpath number as zero.*/
3528 if (driver_config->g_no_cpus == -1)
3529 return 0;
3530
3531 if (!driver_config->g_no_cpus)
3532 driver_config->g_no_cpus = num_online_cpus();
3533
3534 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3535 if (!driver_config->vpath_per_dev)
3536 driver_config->vpath_per_dev = 1;
3537
3538 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3539 if (!vxge_bVALn(vpath_mask, i, 1))
3540 continue;
3541 else
3542 default_no_vpath++;
3543 if (default_no_vpath < driver_config->vpath_per_dev)
3544 driver_config->vpath_per_dev = default_no_vpath;
3545
3546 driver_config->g_no_cpus = driver_config->g_no_cpus -
3547 (driver_config->vpath_per_dev * 2);
3548 if (driver_config->g_no_cpus <= 0)
3549 driver_config->g_no_cpus = -1;
3550 }
3551
3552 if (driver_config->vpath_per_dev == 1) {
3553 vxge_debug_ll_config(VXGE_TRACE,
3554 "%s: Disable tx and rx steering, "
3555 "as single vpath is configured", VXGE_DRIVER_NAME);
3556 config_param->rth_steering = NO_STEERING;
3557 config_param->tx_steering_type = NO_STEERING;
3558 device_config->rth_en = 0;
3559 }
3560
3561 /* configure bandwidth */
3562 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3563 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3564
3565 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3566 device_config->vp_config[i].vp_id = i;
3567 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3568 if (no_of_vpaths < driver_config->vpath_per_dev) {
3569 if (!vxge_bVALn(vpath_mask, i, 1)) {
3570 vxge_debug_ll_config(VXGE_TRACE,
3571 "%s: vpath: %d is not available",
3572 VXGE_DRIVER_NAME, i);
3573 continue;
3574 } else {
3575 vxge_debug_ll_config(VXGE_TRACE,
3576 "%s: vpath: %d available",
3577 VXGE_DRIVER_NAME, i);
3578 no_of_vpaths++;
3579 }
3580 } else {
3581 vxge_debug_ll_config(VXGE_TRACE,
3582 "%s: vpath: %d is not configured, "
3583 "max_config_vpath exceeded",
3584 VXGE_DRIVER_NAME, i);
3585 break;
3586 }
3587
3588 /* Configure Tx fifo's */
3589 device_config->vp_config[i].fifo.enable =
3590 VXGE_HW_FIFO_ENABLE;
3591 device_config->vp_config[i].fifo.max_frags =
5beefb4f 3592 MAX_SKB_FRAGS + 1;
703da5a1
RV		 3593 device_config->vp_config[i].fifo.memblock_size =
3594 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3595
5beefb4f
SH		 3596 txdl_size = device_config->vp_config[i].fifo.max_frags *
3597 sizeof(struct vxge_hw_fifo_txd);
703da5a1
RV		 3598 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3599
3600 device_config->vp_config[i].fifo.fifo_blocks =
3601 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3602
3603 device_config->vp_config[i].fifo.intr =
3604 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3605
3606 /* Configure tti properties */
3607 device_config->vp_config[i].tti.intr_enable =
3608 VXGE_HW_TIM_INTR_ENABLE;
3609
3610 device_config->vp_config[i].tti.btimer_val =
3611 (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3612
3613 device_config->vp_config[i].tti.timer_ac_en =
3614 VXGE_HW_TIM_TIMER_AC_ENABLE;
3615
3616 /* For msi-x with napi (each vector
3617 has a handler of its own) -
3618 Set CI to OFF for all vpaths */
3619 device_config->vp_config[i].tti.timer_ci_en =
3620 VXGE_HW_TIM_TIMER_CI_DISABLE;
3621
3622 device_config->vp_config[i].tti.timer_ri_en =
3623 VXGE_HW_TIM_TIMER_RI_DISABLE;
3624
3625 device_config->vp_config[i].tti.util_sel =
3626 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3627
3628 device_config->vp_config[i].tti.ltimer_val =
3629 (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3630
3631 device_config->vp_config[i].tti.rtimer_val =
3632 (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3633
3634 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3635 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3636 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3637 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3638 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3639 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3640 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3641
3642 /* Configure Rx rings */
3643 device_config->vp_config[i].ring.enable =
3644 VXGE_HW_RING_ENABLE;
3645
3646 device_config->vp_config[i].ring.ring_blocks =
3647 VXGE_HW_DEF_RING_BLOCKS;
3648 device_config->vp_config[i].ring.buffer_mode =
3649 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3650 device_config->vp_config[i].ring.rxds_limit =
3651 VXGE_HW_DEF_RING_RXDS_LIMIT;
3652 device_config->vp_config[i].ring.scatter_mode =
3653 VXGE_HW_RING_SCATTER_MODE_A;
3654
3655 /* Configure rti properties */
3656 device_config->vp_config[i].rti.intr_enable =
3657 VXGE_HW_TIM_INTR_ENABLE;
3658
3659 device_config->vp_config[i].rti.btimer_val =
3660 (VXGE_RTI_BTIMER_VAL * 1000)/272;
3661
3662 device_config->vp_config[i].rti.timer_ac_en =
3663 VXGE_HW_TIM_TIMER_AC_ENABLE;
3664
3665 device_config->vp_config[i].rti.timer_ci_en =
3666 VXGE_HW_TIM_TIMER_CI_DISABLE;
3667
3668 device_config->vp_config[i].rti.timer_ri_en =
3669 VXGE_HW_TIM_TIMER_RI_DISABLE;
3670
3671 device_config->vp_config[i].rti.util_sel =
3672 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3673
3674 device_config->vp_config[i].rti.urange_a =
3675 RTI_RX_URANGE_A;
3676 device_config->vp_config[i].rti.urange_b =
3677 RTI_RX_URANGE_B;
3678 device_config->vp_config[i].rti.urange_c =
3679 RTI_RX_URANGE_C;
3680 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3681 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3682 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3683 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3684
3685 device_config->vp_config[i].rti.rtimer_val =
3686 (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3687
3688 device_config->vp_config[i].rti.ltimer_val =
3689 (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3690
3691 device_config->vp_config[i].rpa_strip_vlan_tag =
3692 vlan_tag_strip;
3693 }
3694
3695 driver_config->vpath_per_dev = temp;
3696 return no_of_vpaths;
3697}
3698
3699/* initialize device configuratrions */
3700static void __devinit vxge_device_config_init(
3701 struct vxge_hw_device_config *device_config,
3702 int *intr_type)
3703{
3704 /* Used for CQRQ/SRQ. */
3705 device_config->dma_blockpool_initial =
3706 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3707
3708 device_config->dma_blockpool_max =
3709 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3710
3711 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3712 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3713
3714#ifndef CONFIG_PCI_MSI
3715 vxge_debug_init(VXGE_ERR,
3716 "%s: This Kernel does not support "
3717 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3718 *intr_type = INTA;
3719#endif
3720
3721 /* Configure whether MSI-X or IRQL. */
3722 switch (*intr_type) {
3723 case INTA:
3724 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3725 break;
3726
3727 case MSI_X:
3728 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3729 break;
3730 }
3731 /* Timer period between device poll */
3732 device_config->device_poll_millis = VXGE_TIMER_DELAY;
3733
3734 /* Configure mac based steering. */
3735 device_config->rts_mac_en = addr_learn_en;
3736
3737 /* Configure Vpaths */
3738 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3739
3740 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3741 __func__);
3742 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3743 device_config->dma_blockpool_initial);
3744 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3745 device_config->dma_blockpool_max);
3746 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3747 device_config->intr_mode);
3748 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3749 device_config->device_poll_millis);
3750 vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3751 device_config->rts_mac_en);
3752 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3753 device_config->rth_en);
3754 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3755 device_config->rth_it_type);
3756}
3757
3758static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3759{
3760 int i;
3761
3762 vxge_debug_init(VXGE_TRACE,
3763 "%s: %d Vpath(s) opened",
3764 vdev->ndev->name, vdev->no_of_vpath);
3765
3766 switch (vdev->config.intr_type) {
3767 case INTA:
3768 vxge_debug_init(VXGE_TRACE,
3769 "%s: Interrupt type INTA", vdev->ndev->name);
3770 break;
3771
3772 case MSI_X:
3773 vxge_debug_init(VXGE_TRACE,
3774 "%s: Interrupt type MSI-X", vdev->ndev->name);
3775 break;
3776 }
3777
3778 if (vdev->config.rth_steering) {
3779 vxge_debug_init(VXGE_TRACE,
3780 "%s: RTH steering enabled for TCP_IPV4",
3781 vdev->ndev->name);
3782 } else {
3783 vxge_debug_init(VXGE_TRACE,
3784 "%s: RTH steering disabled", vdev->ndev->name);
3785 }
3786
3787 switch (vdev->config.tx_steering_type) {
3788 case NO_STEERING:
3789 vxge_debug_init(VXGE_TRACE,
3790 "%s: Tx steering disabled", vdev->ndev->name);
3791 break;
3792 case TX_PRIORITY_STEERING:
3793 vxge_debug_init(VXGE_TRACE,
3794 "%s: Unsupported tx steering option",
3795 vdev->ndev->name);
3796 vxge_debug_init(VXGE_TRACE,
3797 "%s: Tx steering disabled", vdev->ndev->name);
3798 vdev->config.tx_steering_type = 0;
3799 break;
3800 case TX_VLAN_STEERING:
3801 vxge_debug_init(VXGE_TRACE,
3802 "%s: Unsupported tx steering option",
3803 vdev->ndev->name);
3804 vxge_debug_init(VXGE_TRACE,
3805 "%s: Tx steering disabled", vdev->ndev->name);
3806 vdev->config.tx_steering_type = 0;
3807 break;
3808 case TX_MULTIQ_STEERING:
3809 vxge_debug_init(VXGE_TRACE,
3810 "%s: Tx multiqueue steering enabled",
3811 vdev->ndev->name);
3812 break;
3813 case TX_PORT_STEERING:
3814 vxge_debug_init(VXGE_TRACE,
3815 "%s: Tx port steering enabled",
3816 vdev->ndev->name);
3817 break;
3818 default:
3819 vxge_debug_init(VXGE_ERR,
3820 "%s: Unsupported tx steering type",
3821 vdev->ndev->name);
3822 vxge_debug_init(VXGE_TRACE,
3823 "%s: Tx steering disabled", vdev->ndev->name);
3824 vdev->config.tx_steering_type = 0;
3825 }
3826
3827 if (vdev->config.gro_enable) {
3828 vxge_debug_init(VXGE_ERR,
3829 "%s: Generic receive offload enabled",
3830 vdev->ndev->name);
3831 } else
3832 vxge_debug_init(VXGE_TRACE,
3833 "%s: Generic receive offload disabled",
3834 vdev->ndev->name);
3835
3836 if (vdev->config.addr_learn_en)
3837 vxge_debug_init(VXGE_TRACE,
3838 "%s: MAC Address learning enabled", vdev->ndev->name);
3839
3840 vxge_debug_init(VXGE_TRACE,
3841 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3842
3843 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3844 if (!vxge_bVALn(vpath_mask, i, 1))
3845 continue;
3846 vxge_debug_ll_config(VXGE_TRACE,
3847 "%s: MTU size - %d", vdev->ndev->name,
3848 ((struct __vxge_hw_device *)(vdev->devh))->
3849 config.vp_config[i].mtu);
3850 vxge_debug_init(VXGE_TRACE,
3851 "%s: VLAN tag stripping %s", vdev->ndev->name,
3852 ((struct __vxge_hw_device *)(vdev->devh))->
3853 config.vp_config[i].rpa_strip_vlan_tag
3854 ? "Enabled" : "Disabled");
3855 vxge_debug_init(VXGE_TRACE,
3856 "%s: Ring blocks : %d", vdev->ndev->name,
3857 ((struct __vxge_hw_device *)(vdev->devh))->
3858 config.vp_config[i].ring.ring_blocks);
3859 vxge_debug_init(VXGE_TRACE,
3860 "%s: Fifo blocks : %d", vdev->ndev->name,
3861 ((struct __vxge_hw_device *)(vdev->devh))->
3862 config.vp_config[i].fifo.fifo_blocks);
3863 vxge_debug_ll_config(VXGE_TRACE,
3864 "%s: Max frags : %d", vdev->ndev->name,
3865 ((struct __vxge_hw_device *)(vdev->devh))->
3866 config.vp_config[i].fifo.max_frags);
3867 break;
3868 }
3869}
3870
3871#ifdef CONFIG_PM
3872/**
3873 * vxge_pm_suspend - vxge power management suspend entry point
3874 *
3875 */
3876static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3877{
3878 return -ENOSYS;
3879}
3880/**
3881 * vxge_pm_resume - vxge power management resume entry point
3882 *
3883 */
3884static int vxge_pm_resume(struct pci_dev *pdev)
3885{
3886 return -ENOSYS;
3887}
3888
3889#endif
3890
3891/**
3892 * vxge_io_error_detected - called when PCI error is detected
3893 * @pdev: Pointer to PCI device
3894 * @state: The current pci connection state
3895 *
3896 * This function is called after a PCI bus error affecting
3897 * this device has been detected.
3898 */
3899static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3900 pci_channel_state_t state)
3901{
3902 struct __vxge_hw_device *hldev =
3903 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3904 struct net_device *netdev = hldev->ndev;
3905
3906 netif_device_detach(netdev);
3907
e33b992d
DN		 3908 if (state == pci_channel_io_perm_failure)
3909 return PCI_ERS_RESULT_DISCONNECT;
3910
703da5a1
RV		 3911 if (netif_running(netdev)) {
3912 /* Bring down the card, while avoiding PCI I/O */
3913 do_vxge_close(netdev, 0);
3914 }
3915
3916 pci_disable_device(pdev);
3917
3918 return PCI_ERS_RESULT_NEED_RESET;
3919}
3920
3921/**
3922 * vxge_io_slot_reset - called after the pci bus has been reset.
3923 * @pdev: Pointer to PCI device
3924 *
3925 * Restart the card from scratch, as if from a cold-boot.
3926 * At this point, the card has exprienced a hard reset,
3927 * followed by fixups by BIOS, and has its config space
3928 * set up identically to what it was at cold boot.
3929 */
3930static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3931{
3932 struct __vxge_hw_device *hldev =
3933 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3934 struct net_device *netdev = hldev->ndev;
3935
3936 struct vxgedev *vdev = netdev_priv(netdev);
3937
3938 if (pci_enable_device(pdev)) {
3939 printk(KERN_ERR "%s: "
3940 "Cannot re-enable device after reset\n",
3941 VXGE_DRIVER_NAME);
3942 return PCI_ERS_RESULT_DISCONNECT;
3943 }
3944
3945 pci_set_master(pdev);
3946 vxge_reset(vdev);
3947
3948 return PCI_ERS_RESULT_RECOVERED;
3949}
3950
3951/**
3952 * vxge_io_resume - called when traffic can start flowing again.
3953 * @pdev: Pointer to PCI device
3954 *
3955 * This callback is called when the error recovery driver tells
3956 * us that its OK to resume normal operation.
3957 */
3958static void vxge_io_resume(struct pci_dev *pdev)
3959{
3960 struct __vxge_hw_device *hldev =
3961 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3962 struct net_device *netdev = hldev->ndev;
3963
3964 if (netif_running(netdev)) {
3965 if (vxge_open(netdev)) {
3966 printk(KERN_ERR "%s: "
3967 "Can't bring device back up after reset\n",
3968 VXGE_DRIVER_NAME);
3969 return;
3970 }
3971 }
3972
3973 netif_device_attach(netdev);
3974}
3975
cb27ec60
SH		 3976static inline u32 vxge_get_num_vfs(u64 function_mode)
3977{
3978 u32 num_functions = 0;
3979
3980 switch (function_mode) {
3981 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
3982 case VXGE_HW_FUNCTION_MODE_SRIOV_8:
3983 num_functions = 8;
3984 break;
3985 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
3986 num_functions = 1;
3987 break;
3988 case VXGE_HW_FUNCTION_MODE_SRIOV:
3989 case VXGE_HW_FUNCTION_MODE_MRIOV:
3990 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
3991 num_functions = 17;
3992 break;
3993 case VXGE_HW_FUNCTION_MODE_SRIOV_4:
3994 num_functions = 4;
3995 break;
3996 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
3997 num_functions = 2;
3998 break;
3999 case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4000 num_functions = 8; /* TODO */
4001 break;
4002 }
4003 return num_functions;
4004}
4005
703da5a1
RV		 4006/**
4007 * vxge_probe
4008 * @pdev : structure containing the PCI related information of the device.
4009 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4010 * Description:
4011 * This function is called when a new PCI device gets detected and initializes
4012 * it.
4013 * Return value:
4014 * returns 0 on success and negative on failure.
4015 *
4016 */
4017static int __devinit
4018vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4019{
4020 struct __vxge_hw_device *hldev;
4021 enum vxge_hw_status status;
4022 int ret;
4023 int high_dma = 0;
4024 u64 vpath_mask = 0;
4025 struct vxgedev *vdev;
7dad171c 4026 struct vxge_config *ll_config = NULL;
703da5a1
RV		 4027 struct vxge_hw_device_config *device_config = NULL;
4028 struct vxge_hw_device_attr attr;
4029 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4030 u8 *macaddr;
4031 struct vxge_mac_addrs *entry;
4032 static int bus = -1, device = -1;
cb27ec60 4033 u32 host_type;
703da5a1 4034 u8 new_device = 0;
cb27ec60
SH		 4035 enum vxge_hw_status is_privileged;
4036 u32 function_mode;
4037 u32 num_vfs = 0;
703da5a1
RV		 4038
4039 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4040 attr.pdev = pdev;
4041
cb27ec60
SH		 4042 /* In SRIOV-17 mode, functions of the same adapter
4043 * can be deployed on different buses */
4044 if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
4045 (device != PCI_SLOT(pdev->devfn))))
703da5a1
RV		 4046 new_device = 1;
4047
4048 bus = pdev->bus->number;
4049 device = PCI_SLOT(pdev->devfn);
4050
4051 if (new_device) {
4052 if (driver_config->config_dev_cnt &&
4053 (driver_config->config_dev_cnt !=
4054 driver_config->total_dev_cnt))
4055 vxge_debug_init(VXGE_ERR,
4056 "%s: Configured %d of %d devices",
4057 VXGE_DRIVER_NAME,
4058 driver_config->config_dev_cnt,
4059 driver_config->total_dev_cnt);
4060 driver_config->config_dev_cnt = 0;
4061 driver_config->total_dev_cnt = 0;
703da5a1 4062 }
9002397e
SH		 4063 /* Now making the CPU based no of vpath calculation
4064 * applicable for individual functions as well.
4065 */
4066 driver_config->g_no_cpus = 0;
657205bd
SH		 4067 driver_config->vpath_per_dev = max_config_vpath;
4068
703da5a1
RV		 4069 driver_config->total_dev_cnt++;
4070 if (++driver_config->config_dev_cnt > max_config_dev) {
4071 ret = 0;
4072 goto _exit0;
4073 }
4074
4075 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4076 GFP_KERNEL);
4077 if (!device_config) {
4078 ret = -ENOMEM;
4079 vxge_debug_init(VXGE_ERR,
4080 "device_config : malloc failed %s %d",
4081 __FILE__, __LINE__);
4082 goto _exit0;
4083 }
4084
7dad171c
PB		 4085 ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
4086 if (!ll_config) {
4087 ret = -ENOMEM;
4088 vxge_debug_init(VXGE_ERR,
4089 "ll_config : malloc failed %s %d",
4090 __FILE__, __LINE__);
4091 goto _exit0;
4092 }
4093 ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4094 ll_config->intr_type = MSI_X;
4095 ll_config->napi_weight = NEW_NAPI_WEIGHT;
4096 ll_config->rth_steering = RTH_STEERING;
703da5a1
RV		 4097
4098 /* get the default configuration parameters */
4099 vxge_hw_device_config_default_get(device_config);
4100
4101 /* initialize configuration parameters */
7dad171c 4102 vxge_device_config_init(device_config, &ll_config->intr_type);
703da5a1
RV		 4103
4104 ret = pci_enable_device(pdev);
4105 if (ret) {
4106 vxge_debug_init(VXGE_ERR,
4107 "%s : can not enable PCI device", __func__);
4108 goto _exit0;
4109 }
4110
b3837cec 4111 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
703da5a1
RV		 4112 vxge_debug_ll_config(VXGE_TRACE,
4113 "%s : using 64bit DMA", __func__);
4114
4115 high_dma = 1;
4116
4117 if (pci_set_consistent_dma_mask(pdev,
b3837cec 4118 DMA_BIT_MASK(64))) {
703da5a1
RV		 4119 vxge_debug_init(VXGE_ERR,
4120 "%s : unable to obtain 64bit DMA for "
4121 "consistent allocations", __func__);
4122 ret = -ENOMEM;
4123 goto _exit1;
4124 }
b3837cec 4125 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
703da5a1
RV		 4126 vxge_debug_ll_config(VXGE_TRACE,
4127 "%s : using 32bit DMA", __func__);
4128 } else {
4129 ret = -ENOMEM;
4130 goto _exit1;
4131 }
4132
4133 if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4134 vxge_debug_init(VXGE_ERR,
4135 "%s : request regions failed", __func__);
4136 ret = -ENODEV;
4137 goto _exit1;
4138 }
4139
4140 pci_set_master(pdev);
4141
4142 attr.bar0 = pci_ioremap_bar(pdev, 0);
4143 if (!attr.bar0) {
4144 vxge_debug_init(VXGE_ERR,
4145 "%s : cannot remap io memory bar0", __func__);
4146 ret = -ENODEV;
4147 goto _exit2;
4148 }
4149 vxge_debug_ll_config(VXGE_TRACE,
4150 "pci ioremap bar0: %p:0x%llx",
4151 attr.bar0,
4152 (unsigned long long)pci_resource_start(pdev, 0));
4153
703da5a1 4154 status = vxge_hw_device_hw_info_get(attr.bar0,
7dad171c 4155 &ll_config->device_hw_info);
703da5a1
RV		 4156 if (status != VXGE_HW_OK) {
4157 vxge_debug_init(VXGE_ERR,
4158 "%s: Reading of hardware info failed."
4159 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4160 ret = -EINVAL;
7975d1ee 4161 goto _exit3;
703da5a1
RV		 4162 }
4163
7dad171c 4164 if (ll_config->device_hw_info.fw_version.major !=
22fa125e 4165 VXGE_DRIVER_FW_VERSION_MAJOR) {
703da5a1 4166 vxge_debug_init(VXGE_ERR,
22fa125e
SH		 4167 "%s: Incorrect firmware version."
4168 "Please upgrade the firmware to version 1.x.x",
4169 VXGE_DRIVER_NAME);
703da5a1 4170 ret = -EINVAL;
7975d1ee 4171 goto _exit3;
703da5a1
RV		 4172 }
4173
7dad171c 4174 vpath_mask = ll_config->device_hw_info.vpath_mask;
703da5a1
RV		 4175 if (vpath_mask == 0) {
4176 vxge_debug_ll_config(VXGE_TRACE,
4177 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4178 ret = -EINVAL;
7975d1ee 4179 goto _exit3;
703da5a1
RV		 4180 }
4181
4182 vxge_debug_ll_config(VXGE_TRACE,
4183 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4184 (unsigned long long)vpath_mask);
4185
7dad171c
PB		 4186 function_mode = ll_config->device_hw_info.function_mode;
4187 host_type = ll_config->device_hw_info.host_type;
cb27ec60 4188 is_privileged = __vxge_hw_device_is_privilaged(host_type,
7dad171c 4189 ll_config->device_hw_info.func_id);
cb27ec60 4190
703da5a1
RV		 4191 /* Check how many vpaths are available */
4192 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4193 if (!((vpath_mask) & vxge_mBIT(i)))
4194 continue;
4195 max_vpath_supported++;
4196 }
4197
cb27ec60
SH		 4198 if (new_device)
4199 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4200
5dbc9011 4201 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
cb27ec60 4202 if (is_sriov(function_mode) && (max_config_dev > 1) &&
7dad171c 4203 (ll_config->intr_type != INTA) &&
cb27ec60
SH		 4204 (is_privileged == VXGE_HW_OK)) {
4205 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4206 ? (max_config_dev - 1) : num_vfs);
4207 if (ret)
4208 vxge_debug_ll_config(VXGE_ERR,
4209 "Failed in enabling SRIOV mode: %d\n", ret);
5dbc9011
SS		 4210 }
4211
703da5a1
RV		 4212 /*
4213 * Configure vpaths and get driver configured number of vpaths
4214 * which is less than or equal to the maximum vpaths per function.
4215 */
7dad171c 4216 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
703da5a1
RV		 4217 if (!no_of_vpath) {
4218 vxge_debug_ll_config(VXGE_ERR,
4219 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4220 ret = 0;
7975d1ee 4221 goto _exit3;
703da5a1
RV		 4222 }
4223
4224 /* Setting driver callbacks */
4225 attr.uld_callbacks.link_up = vxge_callback_link_up;
4226 attr.uld_callbacks.link_down = vxge_callback_link_down;
4227 attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4228
4229 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4230 if (status != VXGE_HW_OK) {
4231 vxge_debug_init(VXGE_ERR,
4232 "Failed to initialize device (%d)", status);
4233 ret = -EINVAL;
7975d1ee 4234 goto _exit3;
703da5a1
RV		 4235 }
4236
fa41fd10
SH		 4237 /* if FCS stripping is not disabled in MAC fail driver load */
4238 if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4239 vxge_debug_init(VXGE_ERR,
4240 "%s: FCS stripping is not disabled in MAC"
4241 " failing driver load", VXGE_DRIVER_NAME);
4242 ret = -EINVAL;
4243 goto _exit4;
4244 }
4245
703da5a1
RV		 4246 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4247
4248 /* set private device info */
4249 pci_set_drvdata(pdev, hldev);
4250
7dad171c
PB		 4251 ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4252 ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4253 ll_config->addr_learn_en = addr_learn_en;
4254 ll_config->rth_algorithm = RTH_ALG_JENKINS;
4255 ll_config->rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4256 ll_config->rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4257 ll_config->rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4258 ll_config->rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4259 ll_config->rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4260 ll_config->rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4261 ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4262 ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4263 ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4264
4265 if (vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
703da5a1
RV		 4266 &vdev)) {
4267 ret = -EINVAL;
7975d1ee 4268 goto _exit4;
703da5a1
RV		 4269 }
4270
4271 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4272 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4273 vxge_hw_device_trace_level_get(hldev));
4274
4275 /* set private HW device info */
4276 hldev->ndev = vdev->ndev;
4277 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4278 vdev->bar0 = attr.bar0;
703da5a1
RV		 4279 vdev->max_vpath_supported = max_vpath_supported;
4280 vdev->no_of_vpath = no_of_vpath;
4281
4282 /* Virtual Path count */
4283 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4284 if (!vxge_bVALn(vpath_mask, i, 1))
4285 continue;
4286 if (j >= vdev->no_of_vpath)
4287 break;
4288
4289 vdev->vpaths[j].is_configured = 1;
4290 vdev->vpaths[j].device_id = i;
4291 vdev->vpaths[j].fifo.driver_id = j;
4292 vdev->vpaths[j].ring.driver_id = j;
4293 vdev->vpaths[j].vdev = vdev;
4294 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4295 memcpy((u8 *)vdev->vpaths[j].macaddr,
7dad171c 4296 ll_config->device_hw_info.mac_addrs[i],
703da5a1
RV		 4297 ETH_ALEN);
4298
4299 /* Initialize the mac address list header */
4300 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4301
4302 vdev->vpaths[j].mac_addr_cnt = 0;
4303 vdev->vpaths[j].mcast_addr_cnt = 0;
4304 j++;
4305 }
4306 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4307 vdev->max_config_port = max_config_port;
4308
4309 vdev->vlan_tag_strip = vlan_tag_strip;
4310
4311 /* map the hashing selector table to the configured vpaths */
4312 for (i = 0; i < vdev->no_of_vpath; i++)
4313 vdev->vpath_selector[i] = vpath_selector[i];
4314
4315 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4316
7dad171c
PB		 4317 ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4318 ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4319 ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
703da5a1
RV		 4320
4321 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
7dad171c 4322 vdev->ndev->name, ll_config->device_hw_info.serial_number);
703da5a1
RV		 4323
4324 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
7dad171c 4325 vdev->ndev->name, ll_config->device_hw_info.part_number);
703da5a1
RV		 4326
4327 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
7dad171c 4328 vdev->ndev->name, ll_config->device_hw_info.product_desc);
703da5a1 4329
bf54e736 4330 vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4331 vdev->ndev->name, macaddr);
703da5a1
RV		 4332
4333 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4334 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4335
4336 vxge_debug_init(VXGE_TRACE,
4337 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
7dad171c
PB		 4338 ll_config->device_hw_info.fw_version.version,
4339 ll_config->device_hw_info.fw_date.date);
703da5a1 4340
0a25bdc6 4341 if (new_device) {
7dad171c 4342 switch (ll_config->device_hw_info.function_mode) {
0a25bdc6
SH		 4343 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4344 vxge_debug_init(VXGE_TRACE,
4345 "%s: Single Function Mode Enabled", vdev->ndev->name);
4346 break;
4347 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4348 vxge_debug_init(VXGE_TRACE,
4349 "%s: Multi Function Mode Enabled", vdev->ndev->name);
4350 break;
4351 case VXGE_HW_FUNCTION_MODE_SRIOV:
4352 vxge_debug_init(VXGE_TRACE,
4353 "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4354 break;
4355 case VXGE_HW_FUNCTION_MODE_MRIOV:
4356 vxge_debug_init(VXGE_TRACE,
4357 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4358 break;
4359 }
4360 }
4361
703da5a1
RV		 4362 vxge_print_parm(vdev, vpath_mask);
4363
4364 /* Store the fw version for ethttool option */
7dad171c 4365 strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
703da5a1
RV		 4366 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4367 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4368
4369 /* Copy the station mac address to the list */
4370 for (i = 0; i < vdev->no_of_vpath; i++) {
4371 entry = (struct vxge_mac_addrs *)
4372 kzalloc(sizeof(struct vxge_mac_addrs),
4373 GFP_KERNEL);
4374 if (NULL == entry) {
4375 vxge_debug_init(VXGE_ERR,
4376 "%s: mac_addr_list : memory allocation failed",
4377 vdev->ndev->name);
4378 ret = -EPERM;
7975d1ee 4379 goto _exit5;
703da5a1
RV		 4380 }
4381 macaddr = (u8 *)&entry->macaddr;
4382 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4383 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4384 vdev->vpaths[i].mac_addr_cnt = 1;
4385 }
4386
914d0d71 4387 kfree(device_config);
eb5f10c2
SH		 4388
4389 /*
4390 * INTA is shared in multi-function mode. This is unlike the INTA
4391 * implementation in MR mode, where each VH has its own INTA message.
4392 * - INTA is masked (disabled) as long as at least one function sets
4393 * its TITAN_MASK_ALL_INT.ALARM bit.
4394 * - INTA is unmasked (enabled) when all enabled functions have cleared
4395 * their own TITAN_MASK_ALL_INT.ALARM bit.
4396 * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4397 * Though this driver leaves the top level interrupts unmasked while
4398 * leaving the required module interrupt bits masked on exit, there
4399 * could be a rougue driver around that does not follow this procedure
4400 * resulting in a failure to generate interrupts. The following code is
4401 * present to prevent such a failure.
4402 */
4403
7dad171c 4404 if (ll_config->device_hw_info.function_mode ==
eb5f10c2
SH		 4405 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4406 if (vdev->config.intr_type == INTA)
4407 vxge_hw_device_unmask_all(hldev);
4408
703da5a1
RV		 4409 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4410 vdev->ndev->name, __func__, __LINE__);
4411
4412 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4413 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4414 vxge_hw_device_trace_level_get(hldev));
4415
7dad171c 4416 kfree(ll_config);
703da5a1
RV		 4417 return 0;
4418
7975d1ee 4419_exit5:
703da5a1
RV		 4420 for (i = 0; i < vdev->no_of_vpath; i++)
4421 vxge_free_mac_add_list(&vdev->vpaths[i]);
4422
4423 vxge_device_unregister(hldev);
7975d1ee 4424_exit4:
5dbc9011 4425 pci_disable_sriov(pdev);
703da5a1 4426 vxge_hw_device_terminate(hldev);
703da5a1
RV		 4427_exit3:
4428 iounmap(attr.bar0);
4429_exit2:
4430 pci_release_regions(pdev);
4431_exit1:
4432 pci_disable_device(pdev);
4433_exit0:
7dad171c 4434 kfree(ll_config);
703da5a1
RV		 4435 kfree(device_config);
4436 driver_config->config_dev_cnt--;
4437 pci_set_drvdata(pdev, NULL);
4438 return ret;
4439}
4440
4441/**
4442 * vxge_rem_nic - Free the PCI device
4443 * @pdev: structure containing the PCI related information of the device.
4444 * Description: This function is called by the Pci subsystem to release a
4445 * PCI device and free up all resource held up by the device.
4446 */
4447static void __devexit
4448vxge_remove(struct pci_dev *pdev)
4449{
4450 struct __vxge_hw_device *hldev;
4451 struct vxgedev *vdev = NULL;
4452 struct net_device *dev;
4453 int i = 0;
4454#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4455 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4456 u32 level_trace;
4457#endif
4458
4459 hldev = (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4460
4461 if (hldev == NULL)
4462 return;
4463 dev = hldev->ndev;
4464 vdev = netdev_priv(dev);
4465
4466#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4467 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4468 level_trace = vdev->level_trace;
4469#endif
4470 vxge_debug_entryexit(level_trace,
4471 "%s:%d", __func__, __LINE__);
4472
4473 vxge_debug_init(level_trace,
4474 "%s : removing PCI device...", __func__);
4475 vxge_device_unregister(hldev);
4476
4477 for (i = 0; i < vdev->no_of_vpath; i++) {
4478 vxge_free_mac_add_list(&vdev->vpaths[i]);
4479 vdev->vpaths[i].mcast_addr_cnt = 0;
4480 vdev->vpaths[i].mac_addr_cnt = 0;
4481 }
4482
4483 kfree(vdev->vpaths);
4484
4485 iounmap(vdev->bar0);
703da5a1 4486
5dbc9011
SS		 4487 pci_disable_sriov(pdev);
4488
703da5a1
RV		 4489 /* we are safe to free it now */
4490 free_netdev(dev);
4491
4492 vxge_debug_init(level_trace,
4493 "%s:%d Device unregistered", __func__, __LINE__);
4494
4495 vxge_hw_device_terminate(hldev);
4496
4497 pci_disable_device(pdev);
4498 pci_release_regions(pdev);
4499 pci_set_drvdata(pdev, NULL);
4500 vxge_debug_entryexit(level_trace,
4501 "%s:%d Exiting...", __func__, __LINE__);
4502}
4503
4504static struct pci_error_handlers vxge_err_handler = {
4505 .error_detected = vxge_io_error_detected,
4506 .slot_reset = vxge_io_slot_reset,
4507 .resume = vxge_io_resume,
4508};
4509
4510static struct pci_driver vxge_driver = {
4511 .name = VXGE_DRIVER_NAME,
4512 .id_table = vxge_id_table,
4513 .probe = vxge_probe,
4514 .remove = __devexit_p(vxge_remove),
4515#ifdef CONFIG_PM
4516 .suspend = vxge_pm_suspend,
4517 .resume = vxge_pm_resume,
4518#endif
4519 .err_handler = &vxge_err_handler,
4520};
4521
4522static int __init
4523vxge_starter(void)
4524{
4525 int ret = 0;
4526 char version[32];
4527 snprintf(version, 32, "%s", DRV_VERSION);
4528
7074b16c 4529 printk(KERN_INFO "%s: Copyright(c) 2002-2009 Neterion Inc\n",
703da5a1 4530 VXGE_DRIVER_NAME);
7074b16c 4531 printk(KERN_INFO "%s: Driver version: %s\n",
703da5a1
RV		 4532 VXGE_DRIVER_NAME, version);
4533
4534 verify_bandwidth();
4535
4536 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4537 if (!driver_config)
4538 return -ENOMEM;
4539
4540 ret = pci_register_driver(&vxge_driver);
4541
4542 if (driver_config->config_dev_cnt &&
4543 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4544 vxge_debug_init(VXGE_ERR,
4545 "%s: Configured %d of %d devices",
4546 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4547 driver_config->total_dev_cnt);
4548
4549 if (ret)
4550 kfree(driver_config);
4551
4552 return ret;
4553}
4554
4555static void __exit
4556vxge_closer(void)
4557{
4558 pci_unregister_driver(&vxge_driver);
4559 kfree(driver_config);
4560}
4561module_init(vxge_starter);
4562module_exit(vxge_closer);
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