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vxge: improve tx performance by using mmiowb() instead of wmb()
[net-next-2.6.git] / drivers / net / vxge / vxge-main.c
CommitLineData
703da5a1
RV		 1/******************************************************************************
2* This software may be used and distributed according to the terms of
3* the GNU General Public License (GPL), incorporated herein by reference.
4* Drivers based on or derived from this code fall under the GPL and must
5* retain the authorship, copyright and license notice. This file is not
6* a complete program and may only be used when the entire operating
7* system is licensed under the GPL.
8* See the file COPYING in this distribution for more information.
9*
10* vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
11* Virtualized Server Adapter.
12* Copyright(c) 2002-2009 Neterion Inc.
13*
14* The module loadable parameters that are supported by the driver and a brief
15* explanation of all the variables:
16* vlan_tag_strip:
17* Strip VLAN Tag enable/disable. Instructs the device to remove
18* the VLAN tag from all received tagged frames that are not
19* replicated at the internal L2 switch.
20* 0 - Do not strip the VLAN tag.
21* 1 - Strip the VLAN tag.
22*
23* addr_learn_en:
24* Enable learning the mac address of the guest OS interface in
25* a virtualization environment.
26* 0 - DISABLE
27* 1 - ENABLE
28*
29* max_config_port:
30* Maximum number of port to be supported.
31* MIN -1 and MAX - 2
32*
33* max_config_vpath:
34* This configures the maximum no of VPATH configures for each
35* device function.
36* MIN - 1 and MAX - 17
37*
38* max_config_dev:
39* This configures maximum no of Device function to be enabled.
40* MIN - 1 and MAX - 17
41*
42******************************************************************************/
43
44#include <linux/if_vlan.h>
45#include <linux/pci.h>
2b05e002 46#include <linux/tcp.h>
703da5a1
RV		 47#include <net/ip.h>
48#include <linux/netdevice.h>
49#include <linux/etherdevice.h>
50#include "vxge-main.h"
51#include "vxge-reg.h"
52
53MODULE_LICENSE("Dual BSD/GPL");
54MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
55 "Virtualized Server Adapter");
56
57static struct pci_device_id vxge_id_table[] __devinitdata = {
58 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
59 PCI_ANY_ID},
60 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
61 PCI_ANY_ID},
62 {0}
63};
64
65MODULE_DEVICE_TABLE(pci, vxge_id_table);
66
67VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
68VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
69VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
70VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
71VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
72VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
73
74static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
75 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
76static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
77 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
78module_param_array(bw_percentage, uint, NULL, 0);
79
80static struct vxge_drv_config *driver_config;
81
82static inline int is_vxge_card_up(struct vxgedev *vdev)
83{
84 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
85}
86
87static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
88{
89 unsigned long flags = 0;
ff67df55
BL		 90 struct sk_buff **skb_ptr = NULL;
91 struct sk_buff **temp;
92#define NR_SKB_COMPLETED 128
93 struct sk_buff *completed[NR_SKB_COMPLETED];
94 int more;
703da5a1 95
ff67df55
BL		 96 do {
97 more = 0;
98 skb_ptr = completed;
99
100 if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
101 vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
102 NR_SKB_COMPLETED, &more);
103 spin_unlock_irqrestore(&fifo->tx_lock, flags);
104 }
105 /* free SKBs */
106 for (temp = completed; temp != skb_ptr; temp++)
107 dev_kfree_skb_irq(*temp);
108 } while (more) ;
703da5a1
RV		 109}
110
111static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
112{
113 int i;
114
115 /* Complete all transmits */
116 for (i = 0; i < vdev->no_of_vpath; i++)
117 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
118}
119
120static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
121{
122 int i;
123 struct vxge_ring *ring;
124
125 /* Complete all receives*/
126 for (i = 0; i < vdev->no_of_vpath; i++) {
127 ring = &vdev->vpaths[i].ring;
128 vxge_hw_vpath_poll_rx(ring->handle);
129 }
130}
131
132/*
133 * MultiQ manipulation helper functions
134 */
135void vxge_stop_all_tx_queue(struct vxgedev *vdev)
136{
137 int i;
138 struct net_device *dev = vdev->ndev;
139
140 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
141 for (i = 0; i < vdev->no_of_vpath; i++)
142 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
143 }
144 netif_tx_stop_all_queues(dev);
145}
146
147void vxge_stop_tx_queue(struct vxge_fifo *fifo)
148{
149 struct net_device *dev = fifo->ndev;
150
151 struct netdev_queue *txq = NULL;
152 if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
153 txq = netdev_get_tx_queue(dev, fifo->driver_id);
154 else {
155 txq = netdev_get_tx_queue(dev, 0);
156 fifo->queue_state = VPATH_QUEUE_STOP;
157 }
158
159 netif_tx_stop_queue(txq);
160}
161
162void vxge_start_all_tx_queue(struct vxgedev *vdev)
163{
164 int i;
165 struct net_device *dev = vdev->ndev;
166
167 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
168 for (i = 0; i < vdev->no_of_vpath; i++)
169 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
170 }
171 netif_tx_start_all_queues(dev);
172}
173
174static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
175{
176 int i;
177 struct net_device *dev = vdev->ndev;
178
179 if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
180 for (i = 0; i < vdev->no_of_vpath; i++)
181 vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
182 }
183 netif_tx_wake_all_queues(dev);
184}
185
186void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
187{
188 struct net_device *dev = fifo->ndev;
189
190 int vpath_no = fifo->driver_id;
191 struct netdev_queue *txq = NULL;
192 if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
193 txq = netdev_get_tx_queue(dev, vpath_no);
194 if (netif_tx_queue_stopped(txq))
195 netif_tx_wake_queue(txq);
196 } else {
197 txq = netdev_get_tx_queue(dev, 0);
198 if (fifo->queue_state == VPATH_QUEUE_STOP)
199 if (netif_tx_queue_stopped(txq)) {
200 fifo->queue_state = VPATH_QUEUE_START;
201 netif_tx_wake_queue(txq);
202 }
203 }
204}
205
206/*
207 * vxge_callback_link_up
208 *
209 * This function is called during interrupt context to notify link up state
210 * change.
211 */
212void
213vxge_callback_link_up(struct __vxge_hw_device *hldev)
214{
215 struct net_device *dev = hldev->ndev;
216 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
217
218 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
219 vdev->ndev->name, __func__, __LINE__);
220 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
221 vdev->stats.link_up++;
222
223 netif_carrier_on(vdev->ndev);
224 vxge_wake_all_tx_queue(vdev);
225
226 vxge_debug_entryexit(VXGE_TRACE,
227 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
228}
229
230/*
231 * vxge_callback_link_down
232 *
233 * This function is called during interrupt context to notify link down state
234 * change.
235 */
236void
237vxge_callback_link_down(struct __vxge_hw_device *hldev)
238{
239 struct net_device *dev = hldev->ndev;
240 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
241
242 vxge_debug_entryexit(VXGE_TRACE,
243 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
244 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
245
246 vdev->stats.link_down++;
247 netif_carrier_off(vdev->ndev);
248 vxge_stop_all_tx_queue(vdev);
249
250 vxge_debug_entryexit(VXGE_TRACE,
251 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
252}
253
254/*
255 * vxge_rx_alloc
256 *
257 * Allocate SKB.
258 */
259static struct sk_buff*
260vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
261{
262 struct net_device *dev;
263 struct sk_buff *skb;
264 struct vxge_rx_priv *rx_priv;
265
266 dev = ring->ndev;
267 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
268 ring->ndev->name, __func__, __LINE__);
269
270 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
271
272 /* try to allocate skb first. this one may fail */
273 skb = netdev_alloc_skb(dev, skb_size +
274 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
275 if (skb == NULL) {
276 vxge_debug_mem(VXGE_ERR,
277 "%s: out of memory to allocate SKB", dev->name);
278 ring->stats.skb_alloc_fail++;
279 return NULL;
280 }
281
282 vxge_debug_mem(VXGE_TRACE,
283 "%s: %s:%d Skb : 0x%p", ring->ndev->name,
284 __func__, __LINE__, skb);
285
286 skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
287
288 rx_priv->skb = skb;
289 rx_priv->data_size = skb_size;
290 vxge_debug_entryexit(VXGE_TRACE,
291 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
292
293 return skb;
294}
295
296/*
297 * vxge_rx_map
298 */
299static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
300{
301 struct vxge_rx_priv *rx_priv;
302 dma_addr_t dma_addr;
303
304 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
305 ring->ndev->name, __func__, __LINE__);
306 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
307
308 dma_addr = pci_map_single(ring->pdev, rx_priv->skb->data,
309 rx_priv->data_size, PCI_DMA_FROMDEVICE);
310
311 if (dma_addr == 0) {
312 ring->stats.pci_map_fail++;
313 return -EIO;
314 }
315 vxge_debug_mem(VXGE_TRACE,
316 "%s: %s:%d 1 buffer mode dma_addr = 0x%llx",
317 ring->ndev->name, __func__, __LINE__,
318 (unsigned long long)dma_addr);
319 vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
320
321 rx_priv->data_dma = dma_addr;
322 vxge_debug_entryexit(VXGE_TRACE,
323 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
324
325 return 0;
326}
327
328/*
329 * vxge_rx_initial_replenish
330 * Allocation of RxD as an initial replenish procedure.
331 */
332static enum vxge_hw_status
333vxge_rx_initial_replenish(void *dtrh, void *userdata)
334{
335 struct vxge_ring *ring = (struct vxge_ring *)userdata;
336 struct vxge_rx_priv *rx_priv;
337
338 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
339 ring->ndev->name, __func__, __LINE__);
340 if (vxge_rx_alloc(dtrh, ring,
341 VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
342 return VXGE_HW_FAIL;
343
344 if (vxge_rx_map(dtrh, ring)) {
345 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
346 dev_kfree_skb(rx_priv->skb);
347
348 return VXGE_HW_FAIL;
349 }
350 vxge_debug_entryexit(VXGE_TRACE,
351 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
352
353 return VXGE_HW_OK;
354}
355
356static inline void
357vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
358 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
359{
360
361 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
362 ring->ndev->name, __func__, __LINE__);
363 skb_record_rx_queue(skb, ring->driver_id);
364 skb->protocol = eth_type_trans(skb, ring->ndev);
365
366 ring->stats.rx_frms++;
367 ring->stats.rx_bytes += pkt_length;
368
369 if (skb->pkt_type == PACKET_MULTICAST)
370 ring->stats.rx_mcast++;
371
372 vxge_debug_rx(VXGE_TRACE,
373 "%s: %s:%d skb protocol = %d",
374 ring->ndev->name, __func__, __LINE__, skb->protocol);
375
376 if (ring->gro_enable) {
377 if (ring->vlgrp && ext_info->vlan &&
378 (ring->vlan_tag_strip ==
379 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
a5d165b5 380 vlan_gro_receive(ring->napi_p, ring->vlgrp,
703da5a1
RV		 381 ext_info->vlan, skb);
382 else
a5d165b5 383 napi_gro_receive(ring->napi_p, skb);
703da5a1
RV		 384 } else {
385 if (ring->vlgrp && vlan &&
386 (ring->vlan_tag_strip ==
387 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
388 vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
389 else
390 netif_receive_skb(skb);
391 }
392 vxge_debug_entryexit(VXGE_TRACE,
393 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
394}
395
396static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
397 struct vxge_rx_priv *rx_priv)
398{
399 pci_dma_sync_single_for_device(ring->pdev,
400 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
401
402 vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
403 vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
404}
405
406static inline void vxge_post(int *dtr_cnt, void **first_dtr,
407 void *post_dtr, struct __vxge_hw_ring *ringh)
408{
409 int dtr_count = *dtr_cnt;
410 if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
411 if (*first_dtr)
412 vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
413 *first_dtr = post_dtr;
414 } else
415 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
416 dtr_count++;
417 *dtr_cnt = dtr_count;
418}
419
420/*
421 * vxge_rx_1b_compl
422 *
423 * If the interrupt is because of a received frame or if the receive ring
424 * contains fresh as yet un-processed frames, this function is called.
425 */
426enum vxge_hw_status
427vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
428 u8 t_code, void *userdata)
429{
430 struct vxge_ring *ring = (struct vxge_ring *)userdata;
431 struct net_device *dev = ring->ndev;
432 unsigned int dma_sizes;
433 void *first_dtr = NULL;
434 int dtr_cnt = 0;
435 int data_size;
436 dma_addr_t data_dma;
437 int pkt_length;
438 struct sk_buff *skb;
439 struct vxge_rx_priv *rx_priv;
440 struct vxge_hw_ring_rxd_info ext_info;
441 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
442 ring->ndev->name, __func__, __LINE__);
443 ring->pkts_processed = 0;
444
445 vxge_hw_ring_replenish(ringh, 0);
446
447 do {
448 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
449 skb = rx_priv->skb;
450 data_size = rx_priv->data_size;
451 data_dma = rx_priv->data_dma;
452
453 vxge_debug_rx(VXGE_TRACE,
454 "%s: %s:%d skb = 0x%p",
455 ring->ndev->name, __func__, __LINE__, skb);
456
457 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
458 pkt_length = dma_sizes;
459
22fa125e
SH		 460 pkt_length -= ETH_FCS_LEN;
461
703da5a1
RV		 462 vxge_debug_rx(VXGE_TRACE,
463 "%s: %s:%d Packet Length = %d",
464 ring->ndev->name, __func__, __LINE__, pkt_length);
465
466 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
467
468 /* check skb validity */
469 vxge_assert(skb);
470
471 prefetch((char *)skb + L1_CACHE_BYTES);
472 if (unlikely(t_code)) {
473
474 if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
475 VXGE_HW_OK) {
476
477 ring->stats.rx_errors++;
478 vxge_debug_rx(VXGE_TRACE,
479 "%s: %s :%d Rx T_code is %d",
480 ring->ndev->name, __func__,
481 __LINE__, t_code);
482
483 /* If the t_code is not supported and if the
484 * t_code is other than 0x5 (unparseable packet
485 * such as unknown UPV6 header), Drop it !!!
486 */
487 vxge_re_pre_post(dtr, ring, rx_priv);
488
489 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
490 ring->stats.rx_dropped++;
491 continue;
492 }
493 }
494
495 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
496
497 if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
498
499 if (!vxge_rx_map(dtr, ring)) {
500 skb_put(skb, pkt_length);
501
502 pci_unmap_single(ring->pdev, data_dma,
503 data_size, PCI_DMA_FROMDEVICE);
504
505 vxge_hw_ring_rxd_pre_post(ringh, dtr);
506 vxge_post(&dtr_cnt, &first_dtr, dtr,
507 ringh);
508 } else {
509 dev_kfree_skb(rx_priv->skb);
510 rx_priv->skb = skb;
511 rx_priv->data_size = data_size;
512 vxge_re_pre_post(dtr, ring, rx_priv);
513
514 vxge_post(&dtr_cnt, &first_dtr, dtr,
515 ringh);
516 ring->stats.rx_dropped++;
517 break;
518 }
519 } else {
520 vxge_re_pre_post(dtr, ring, rx_priv);
521
522 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
523 ring->stats.rx_dropped++;
524 break;
525 }
526 } else {
527 struct sk_buff *skb_up;
528
529 skb_up = netdev_alloc_skb(dev, pkt_length +
530 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
531 if (skb_up != NULL) {
532 skb_reserve(skb_up,
533 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
534
535 pci_dma_sync_single_for_cpu(ring->pdev,
536 data_dma, data_size,
537 PCI_DMA_FROMDEVICE);
538
539 vxge_debug_mem(VXGE_TRACE,
540 "%s: %s:%d skb_up = %p",
541 ring->ndev->name, __func__,
542 __LINE__, skb);
543 memcpy(skb_up->data, skb->data, pkt_length);
544
545 vxge_re_pre_post(dtr, ring, rx_priv);
546
547 vxge_post(&dtr_cnt, &first_dtr, dtr,
548 ringh);
549 /* will netif_rx small SKB instead */
550 skb = skb_up;
551 skb_put(skb, pkt_length);
552 } else {
553 vxge_re_pre_post(dtr, ring, rx_priv);
554
555 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
556 vxge_debug_rx(VXGE_ERR,
557 "%s: vxge_rx_1b_compl: out of "
558 "memory", dev->name);
559 ring->stats.skb_alloc_fail++;
560 break;
561 }
562 }
563
564 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
565 !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
566 ring->rx_csum && /* Offload Rx side CSUM */
567 ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
568 ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
569 skb->ip_summed = CHECKSUM_UNNECESSARY;
570 else
571 skb->ip_summed = CHECKSUM_NONE;
572
573 vxge_rx_complete(ring, skb, ext_info.vlan,
574 pkt_length, &ext_info);
575
576 ring->budget--;
577 ring->pkts_processed++;
578 if (!ring->budget)
579 break;
580
581 } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
582 &t_code) == VXGE_HW_OK);
583
584 if (first_dtr)
585 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
586
587 dev->last_rx = jiffies;
588
589 vxge_debug_entryexit(VXGE_TRACE,
590 "%s:%d Exiting...",
591 __func__, __LINE__);
592 return VXGE_HW_OK;
593}
594
595/*
596 * vxge_xmit_compl
597 *
598 * If an interrupt was raised to indicate DMA complete of the Tx packet,
599 * this function is called. It identifies the last TxD whose buffer was
600 * freed and frees all skbs whose data have already DMA'ed into the NICs
601 * internal memory.
602 */
603enum vxge_hw_status
604vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
605 enum vxge_hw_fifo_tcode t_code, void *userdata,
ff67df55 606 struct sk_buff ***skb_ptr, int nr_skb, int *more)
703da5a1
RV		 607{
608 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
ff67df55 609 struct sk_buff *skb, **done_skb = *skb_ptr;
703da5a1
RV		 610 int pkt_cnt = 0;
611
612 vxge_debug_entryexit(VXGE_TRACE,
613 "%s:%d Entered....", __func__, __LINE__);
614
615 do {
616 int frg_cnt;
617 skb_frag_t *frag;
618 int i = 0, j;
619 struct vxge_tx_priv *txd_priv =
620 vxge_hw_fifo_txdl_private_get(dtr);
621
622 skb = txd_priv->skb;
623 frg_cnt = skb_shinfo(skb)->nr_frags;
624 frag = &skb_shinfo(skb)->frags[0];
625
626 vxge_debug_tx(VXGE_TRACE,
627 "%s: %s:%d fifo_hw = %p dtr = %p "
628 "tcode = 0x%x", fifo->ndev->name, __func__,
629 __LINE__, fifo_hw, dtr, t_code);
630 /* check skb validity */
631 vxge_assert(skb);
632 vxge_debug_tx(VXGE_TRACE,
633 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
634 fifo->ndev->name, __func__, __LINE__,
635 skb, txd_priv, frg_cnt);
636 if (unlikely(t_code)) {
637 fifo->stats.tx_errors++;
638 vxge_debug_tx(VXGE_ERR,
639 "%s: tx: dtr %p completed due to "
640 "error t_code %01x", fifo->ndev->name,
641 dtr, t_code);
642 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
643 }
644
645 /* for unfragmented skb */
646 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
647 skb_headlen(skb), PCI_DMA_TODEVICE);
648
649 for (j = 0; j < frg_cnt; j++) {
650 pci_unmap_page(fifo->pdev,
651 txd_priv->dma_buffers[i++],
652 frag->size, PCI_DMA_TODEVICE);
653 frag += 1;
654 }
655
656 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
657
658 /* Updating the statistics block */
659 fifo->stats.tx_frms++;
660 fifo->stats.tx_bytes += skb->len;
661
ff67df55
BL		 662 *done_skb++ = skb;
663
664 if (--nr_skb <= 0) {
665 *more = 1;
666 break;
667 }
703da5a1
RV		 668
669 pkt_cnt++;
670 if (pkt_cnt > fifo->indicate_max_pkts)
671 break;
672
673 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
674 &dtr, &t_code) == VXGE_HW_OK);
675
ff67df55 676 *skb_ptr = done_skb;
703da5a1
RV		 677 vxge_wake_tx_queue(fifo, skb);
678
703da5a1
RV		 679 vxge_debug_entryexit(VXGE_TRACE,
680 "%s: %s:%d Exiting...",
681 fifo->ndev->name, __func__, __LINE__);
682 return VXGE_HW_OK;
683}
684
28679751 685/* select a vpath to transmit the packet */
703da5a1
RV		 686static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
687 int *do_lock)
688{
689 u16 queue_len, counter = 0;
690 if (skb->protocol == htons(ETH_P_IP)) {
691 struct iphdr *ip;
692 struct tcphdr *th;
693
694 ip = ip_hdr(skb);
695
696 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
697 th = (struct tcphdr *)(((unsigned char *)ip) +
698 ip->ihl*4);
699
700 queue_len = vdev->no_of_vpath;
701 counter = (ntohs(th->source) +
702 ntohs(th->dest)) &
703 vdev->vpath_selector[queue_len - 1];
704 if (counter >= queue_len)
705 counter = queue_len - 1;
706
707 if (ip->protocol == IPPROTO_UDP) {
708#ifdef NETIF_F_LLTX
709 *do_lock = 0;
710#endif
711 }
712 }
713 }
714 return counter;
715}
716
717static enum vxge_hw_status vxge_search_mac_addr_in_list(
718 struct vxge_vpath *vpath, u64 del_mac)
719{
720 struct list_head *entry, *next;
721 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
722 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
723 return TRUE;
724 }
725 return FALSE;
726}
727
728static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
729{
730 struct macInfo mac_info;
731 u8 *mac_address = NULL;
732 u64 mac_addr = 0, vpath_vector = 0;
733 int vpath_idx = 0;
734 enum vxge_hw_status status = VXGE_HW_OK;
735 struct vxge_vpath *vpath = NULL;
736 struct __vxge_hw_device *hldev;
737
738 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
739
740 mac_address = (u8 *)&mac_addr;
741 memcpy(mac_address, mac_header, ETH_ALEN);
742
743 /* Is this mac address already in the list? */
744 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
745 vpath = &vdev->vpaths[vpath_idx];
746 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
747 return vpath_idx;
748 }
749
750 memset(&mac_info, 0, sizeof(struct macInfo));
751 memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
752
753 /* Any vpath has room to add mac address to its da table? */
754 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
755 vpath = &vdev->vpaths[vpath_idx];
756 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
757 /* Add this mac address to this vpath */
758 mac_info.vpath_no = vpath_idx;
759 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
760 status = vxge_add_mac_addr(vdev, &mac_info);
761 if (status != VXGE_HW_OK)
762 return -EPERM;
763 return vpath_idx;
764 }
765 }
766
767 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
768 vpath_idx = 0;
769 mac_info.vpath_no = vpath_idx;
770 /* Is the first vpath already selected as catch-basin ? */
771 vpath = &vdev->vpaths[vpath_idx];
772 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
773 /* Add this mac address to this vpath */
774 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
775 return -EPERM;
776 return vpath_idx;
777 }
778
779 /* Select first vpath as catch-basin */
780 vpath_vector = vxge_mBIT(vpath->device_id);
781 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
782 vxge_hw_mgmt_reg_type_mrpcim,
783 0,
784 (ulong)offsetof(
785 struct vxge_hw_mrpcim_reg,
786 rts_mgr_cbasin_cfg),
787 vpath_vector);
788 if (status != VXGE_HW_OK) {
789 vxge_debug_tx(VXGE_ERR,
790 "%s: Unable to set the vpath-%d in catch-basin mode",
791 VXGE_DRIVER_NAME, vpath->device_id);
792 return -EPERM;
793 }
794
795 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
796 return -EPERM;
797
798 return vpath_idx;
799}
800
801/**
802 * vxge_xmit
803 * @skb : the socket buffer containing the Tx data.
804 * @dev : device pointer.
805 *
806 * This function is the Tx entry point of the driver. Neterion NIC supports
807 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
808 * NOTE: when device cant queue the pkt, just the trans_start variable will
809 * not be upadted.
810*/
811static int
812vxge_xmit(struct sk_buff *skb, struct net_device *dev)
813{
814 struct vxge_fifo *fifo = NULL;
815 void *dtr_priv;
816 void *dtr = NULL;
817 struct vxgedev *vdev = NULL;
818 enum vxge_hw_status status;
819 int frg_cnt, first_frg_len;
820 skb_frag_t *frag;
821 int i = 0, j = 0, avail;
822 u64 dma_pointer;
823 struct vxge_tx_priv *txdl_priv = NULL;
824 struct __vxge_hw_fifo *fifo_hw;
703da5a1
RV		 825 int offload_type;
826 unsigned long flags = 0;
827 int vpath_no = 0;
828 int do_spin_tx_lock = 1;
829
830 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
831 dev->name, __func__, __LINE__);
832
833 /* A buffer with no data will be dropped */
834 if (unlikely(skb->len <= 0)) {
835 vxge_debug_tx(VXGE_ERR,
836 "%s: Buffer has no data..", dev->name);
837 dev_kfree_skb(skb);
838 return NETDEV_TX_OK;
839 }
840
841 vdev = (struct vxgedev *)netdev_priv(dev);
842
843 if (unlikely(!is_vxge_card_up(vdev))) {
844 vxge_debug_tx(VXGE_ERR,
845 "%s: vdev not initialized", dev->name);
846 dev_kfree_skb(skb);
847 return NETDEV_TX_OK;
848 }
849
850 if (vdev->config.addr_learn_en) {
851 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
852 if (vpath_no == -EPERM) {
853 vxge_debug_tx(VXGE_ERR,
854 "%s: Failed to store the mac address",
855 dev->name);
856 dev_kfree_skb(skb);
857 return NETDEV_TX_OK;
858 }
859 }
860
861 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
862 vpath_no = skb_get_queue_mapping(skb);
863 else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
864 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
865
866 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
867
868 if (vpath_no >= vdev->no_of_vpath)
869 vpath_no = 0;
870
871 fifo = &vdev->vpaths[vpath_no].fifo;
872 fifo_hw = fifo->handle;
873
874 if (do_spin_tx_lock)
875 spin_lock_irqsave(&fifo->tx_lock, flags);
876 else {
877 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
878 return NETDEV_TX_LOCKED;
879 }
880
881 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
882 if (netif_subqueue_stopped(dev, skb)) {
883 spin_unlock_irqrestore(&fifo->tx_lock, flags);
884 return NETDEV_TX_BUSY;
885 }
886 } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
887 if (netif_queue_stopped(dev)) {
888 spin_unlock_irqrestore(&fifo->tx_lock, flags);
889 return NETDEV_TX_BUSY;
890 }
891 }
892 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
893 if (avail == 0) {
894 vxge_debug_tx(VXGE_ERR,
895 "%s: No free TXDs available", dev->name);
896 fifo->stats.txd_not_free++;
897 vxge_stop_tx_queue(fifo);
898 goto _exit2;
899 }
900
4403b371
BL		 901 /* Last TXD? Stop tx queue to avoid dropping packets. TX
902 * completion will resume the queue.
903 */
904 if (avail == 1)
905 vxge_stop_tx_queue(fifo);
906
703da5a1
RV		 907 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
908 if (unlikely(status != VXGE_HW_OK)) {
909 vxge_debug_tx(VXGE_ERR,
910 "%s: Out of descriptors .", dev->name);
911 fifo->stats.txd_out_of_desc++;
912 vxge_stop_tx_queue(fifo);
913 goto _exit2;
914 }
915
916 vxge_debug_tx(VXGE_TRACE,
917 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
918 dev->name, __func__, __LINE__,
919 fifo_hw, dtr, dtr_priv);
920
921 if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
922 u16 vlan_tag = vlan_tx_tag_get(skb);
923 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
924 }
925
926 first_frg_len = skb_headlen(skb);
927
928 dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
929 PCI_DMA_TODEVICE);
930
931 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
932 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
933 vxge_stop_tx_queue(fifo);
934 fifo->stats.pci_map_fail++;
935 goto _exit2;
936 }
937
938 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
939 txdl_priv->skb = skb;
940 txdl_priv->dma_buffers[j] = dma_pointer;
941
942 frg_cnt = skb_shinfo(skb)->nr_frags;
943 vxge_debug_tx(VXGE_TRACE,
944 "%s: %s:%d skb = %p txdl_priv = %p "
945 "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
946 __func__, __LINE__, skb, txdl_priv,
947 frg_cnt, (unsigned long long)dma_pointer);
948
949 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
950 first_frg_len);
951
952 frag = &skb_shinfo(skb)->frags[0];
953 for (i = 0; i < frg_cnt; i++) {
954 /* ignore 0 length fragment */
955 if (!frag->size)
956 continue;
957
958 dma_pointer =
959 (u64)pci_map_page(fifo->pdev, frag->page,
960 frag->page_offset, frag->size,
961 PCI_DMA_TODEVICE);
962
963 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
964 goto _exit0;
965 vxge_debug_tx(VXGE_TRACE,
966 "%s: %s:%d frag = %d dma_pointer = 0x%llx",
967 dev->name, __func__, __LINE__, i,
968 (unsigned long long)dma_pointer);
969
970 txdl_priv->dma_buffers[j] = dma_pointer;
971 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
972 frag->size);
973 frag += 1;
974 }
975
976 offload_type = vxge_offload_type(skb);
977
978 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
979
980 int mss = vxge_tcp_mss(skb);
981 if (mss) {
703da5a1
RV		 982 vxge_debug_tx(VXGE_TRACE,
983 "%s: %s:%d mss = %d",
984 dev->name, __func__, __LINE__, mss);
985 vxge_hw_fifo_txdl_mss_set(dtr, mss);
986 } else {
987 vxge_assert(skb->len <=
988 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
989 vxge_assert(0);
990 goto _exit1;
991 }
992 }
993
994 if (skb->ip_summed == CHECKSUM_PARTIAL)
995 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
996 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
997 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
998 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
999
1000 vxge_hw_fifo_txdl_post(fifo_hw, dtr);
28679751
ED		 1001#ifdef NETIF_F_LLTX
1002 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
1003#endif
703da5a1
RV		 1004 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1005
1006 VXGE_COMPLETE_VPATH_TX(fifo);
1007 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
1008 dev->name, __func__, __LINE__);
6ed10654 1009 return NETDEV_TX_OK;
703da5a1
RV		 1010
1011_exit0:
1012 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1013
1014_exit1:
1015 j = 0;
1016 frag = &skb_shinfo(skb)->frags[0];
1017
1018 pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1019 skb_headlen(skb), PCI_DMA_TODEVICE);
1020
1021 for (; j < i; j++) {
1022 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1023 frag->size, PCI_DMA_TODEVICE);
1024 frag += 1;
1025 }
1026
1027 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1028_exit2:
1029 dev_kfree_skb(skb);
1030 spin_unlock_irqrestore(&fifo->tx_lock, flags);
1031 VXGE_COMPLETE_VPATH_TX(fifo);
1032
6ed10654 1033 return NETDEV_TX_OK;
703da5a1
RV		 1034}
1035
1036/*
1037 * vxge_rx_term
1038 *
1039 * Function will be called by hw function to abort all outstanding receive
1040 * descriptors.
1041 */
1042static void
1043vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1044{
1045 struct vxge_ring *ring = (struct vxge_ring *)userdata;
1046 struct vxge_rx_priv *rx_priv =
1047 vxge_hw_ring_rxd_private_get(dtrh);
1048
1049 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1050 ring->ndev->name, __func__, __LINE__);
1051 if (state != VXGE_HW_RXD_STATE_POSTED)
1052 return;
1053
1054 pci_unmap_single(ring->pdev, rx_priv->data_dma,
1055 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1056
1057 dev_kfree_skb(rx_priv->skb);
1058
1059 vxge_debug_entryexit(VXGE_TRACE,
1060 "%s: %s:%d Exiting...",
1061 ring->ndev->name, __func__, __LINE__);
1062}
1063
1064/*
1065 * vxge_tx_term
1066 *
1067 * Function will be called to abort all outstanding tx descriptors
1068 */
1069static void
1070vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1071{
1072 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1073 skb_frag_t *frag;
1074 int i = 0, j, frg_cnt;
1075 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1076 struct sk_buff *skb = txd_priv->skb;
1077
1078 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1079
1080 if (state != VXGE_HW_TXDL_STATE_POSTED)
1081 return;
1082
1083 /* check skb validity */
1084 vxge_assert(skb);
1085 frg_cnt = skb_shinfo(skb)->nr_frags;
1086 frag = &skb_shinfo(skb)->frags[0];
1087
1088 /* for unfragmented skb */
1089 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1090 skb_headlen(skb), PCI_DMA_TODEVICE);
1091
1092 for (j = 0; j < frg_cnt; j++) {
1093 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1094 frag->size, PCI_DMA_TODEVICE);
1095 frag += 1;
1096 }
1097
1098 dev_kfree_skb(skb);
1099
1100 vxge_debug_entryexit(VXGE_TRACE,
1101 "%s:%d Exiting...", __func__, __LINE__);
1102}
1103
1104/**
1105 * vxge_set_multicast
1106 * @dev: pointer to the device structure
1107 *
1108 * Entry point for multicast address enable/disable
1109 * This function is a driver entry point which gets called by the kernel
1110 * whenever multicast addresses must be enabled/disabled. This also gets
1111 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1112 * determine, if multicast address must be enabled or if promiscuous mode
1113 * is to be disabled etc.
1114 */
1115static void vxge_set_multicast(struct net_device *dev)
1116{
1117 struct dev_mc_list *mclist;
1118 struct vxgedev *vdev;
1119 int i, mcast_cnt = 0;
1120 struct __vxge_hw_device *hldev;
1121 enum vxge_hw_status status = VXGE_HW_OK;
1122 struct macInfo mac_info;
1123 int vpath_idx = 0;
1124 struct vxge_mac_addrs *mac_entry;
1125 struct list_head *list_head;
1126 struct list_head *entry, *next;
1127 u8 *mac_address = NULL;
1128
1129 vxge_debug_entryexit(VXGE_TRACE,
1130 "%s:%d", __func__, __LINE__);
1131
1132 vdev = (struct vxgedev *)netdev_priv(dev);
1133 hldev = (struct __vxge_hw_device *)vdev->devh;
1134
1135 if (unlikely(!is_vxge_card_up(vdev)))
1136 return;
1137
1138 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1139 for (i = 0; i < vdev->no_of_vpath; i++) {
1140 vxge_assert(vdev->vpaths[i].is_open);
1141 status = vxge_hw_vpath_mcast_enable(
1142 vdev->vpaths[i].handle);
1143 vdev->all_multi_flg = 1;
1144 }
1145 } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1146 for (i = 0; i < vdev->no_of_vpath; i++) {
1147 vxge_assert(vdev->vpaths[i].is_open);
1148 status = vxge_hw_vpath_mcast_disable(
1149 vdev->vpaths[i].handle);
1150 vdev->all_multi_flg = 1;
1151 }
1152 }
1153
1154 if (status != VXGE_HW_OK)
1155 vxge_debug_init(VXGE_ERR,
1156 "failed to %s multicast, status %d",
1157 dev->flags & IFF_ALLMULTI ?
1158 "enable" : "disable", status);
1159
1160 if (!vdev->config.addr_learn_en) {
1161 if (dev->flags & IFF_PROMISC) {
1162 for (i = 0; i < vdev->no_of_vpath; i++) {
1163 vxge_assert(vdev->vpaths[i].is_open);
1164 status = vxge_hw_vpath_promisc_enable(
1165 vdev->vpaths[i].handle);
1166 }
1167 } else {
1168 for (i = 0; i < vdev->no_of_vpath; i++) {
1169 vxge_assert(vdev->vpaths[i].is_open);
1170 status = vxge_hw_vpath_promisc_disable(
1171 vdev->vpaths[i].handle);
1172 }
1173 }
1174 }
1175
1176 memset(&mac_info, 0, sizeof(struct macInfo));
1177 /* Update individual M_CAST address list */
1178 if ((!vdev->all_multi_flg) && dev->mc_count) {
1179
1180 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1181 list_head = &vdev->vpaths[0].mac_addr_list;
1182 if ((dev->mc_count +
1183 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1184 vdev->vpaths[0].max_mac_addr_cnt)
1185 goto _set_all_mcast;
1186
1187 /* Delete previous MC's */
1188 for (i = 0; i < mcast_cnt; i++) {
1189 if (!list_empty(list_head))
1190 mac_entry = (struct vxge_mac_addrs *)
1191 list_first_entry(list_head,
1192 struct vxge_mac_addrs,
1193 item);
1194
1195 list_for_each_safe(entry, next, list_head) {
1196
1197 mac_entry = (struct vxge_mac_addrs *) entry;
1198 /* Copy the mac address to delete */
1199 mac_address = (u8 *)&mac_entry->macaddr;
1200 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1201
1202 /* Is this a multicast address */
1203 if (0x01 & mac_info.macaddr[0]) {
1204 for (vpath_idx = 0; vpath_idx <
1205 vdev->no_of_vpath;
1206 vpath_idx++) {
1207 mac_info.vpath_no = vpath_idx;
1208 status = vxge_del_mac_addr(
1209 vdev,
1210 &mac_info);
1211 }
1212 }
1213 }
1214 }
1215
1216 /* Add new ones */
1217 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1218 i++, mclist = mclist->next) {
1219
1220 memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1221 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1222 vpath_idx++) {
1223 mac_info.vpath_no = vpath_idx;
1224 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1225 status = vxge_add_mac_addr(vdev, &mac_info);
1226 if (status != VXGE_HW_OK) {
1227 vxge_debug_init(VXGE_ERR,
1228 "%s:%d Setting individual"
1229 "multicast address failed",
1230 __func__, __LINE__);
1231 goto _set_all_mcast;
1232 }
1233 }
1234 }
1235
1236 return;
1237_set_all_mcast:
1238 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1239 /* Delete previous MC's */
1240 for (i = 0; i < mcast_cnt; i++) {
1241
1242 list_for_each_safe(entry, next, list_head) {
1243
1244 mac_entry = (struct vxge_mac_addrs *) entry;
1245 /* Copy the mac address to delete */
1246 mac_address = (u8 *)&mac_entry->macaddr;
1247 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1248
1249 /* Is this a multicast address */
1250 if (0x01 & mac_info.macaddr[0])
1251 break;
1252 }
1253
1254 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1255 vpath_idx++) {
1256 mac_info.vpath_no = vpath_idx;
1257 status = vxge_del_mac_addr(vdev, &mac_info);
1258 }
1259 }
1260
1261 /* Enable all multicast */
1262 for (i = 0; i < vdev->no_of_vpath; i++) {
1263 vxge_assert(vdev->vpaths[i].is_open);
1264 status = vxge_hw_vpath_mcast_enable(
1265 vdev->vpaths[i].handle);
1266 if (status != VXGE_HW_OK) {
1267 vxge_debug_init(VXGE_ERR,
1268 "%s:%d Enabling all multicasts failed",
1269 __func__, __LINE__);
1270 }
1271 vdev->all_multi_flg = 1;
1272 }
1273 dev->flags |= IFF_ALLMULTI;
1274 }
1275
1276 vxge_debug_entryexit(VXGE_TRACE,
1277 "%s:%d Exiting...", __func__, __LINE__);
1278}
1279
1280/**
1281 * vxge_set_mac_addr
1282 * @dev: pointer to the device structure
1283 *
1284 * Update entry "0" (default MAC addr)
1285 */
1286static int vxge_set_mac_addr(struct net_device *dev, void *p)
1287{
1288 struct sockaddr *addr = p;
1289 struct vxgedev *vdev;
1290 struct __vxge_hw_device *hldev;
1291 enum vxge_hw_status status = VXGE_HW_OK;
1292 struct macInfo mac_info_new, mac_info_old;
1293 int vpath_idx = 0;
1294
1295 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1296
1297 vdev = (struct vxgedev *)netdev_priv(dev);
1298 hldev = vdev->devh;
1299
1300 if (!is_valid_ether_addr(addr->sa_data))
1301 return -EINVAL;
1302
1303 memset(&mac_info_new, 0, sizeof(struct macInfo));
1304 memset(&mac_info_old, 0, sizeof(struct macInfo));
1305
1306 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...",
1307 __func__, __LINE__);
1308
1309 /* Get the old address */
1310 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1311
1312 /* Copy the new address */
1313 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1314
1315 /* First delete the old mac address from all the vpaths
1316 as we can't specify the index while adding new mac address */
1317 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1318 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1319 if (!vpath->is_open) {
1320 /* This can happen when this interface is added/removed
1321 to the bonding interface. Delete this station address
1322 from the linked list */
1323 vxge_mac_list_del(vpath, &mac_info_old);
1324
1325 /* Add this new address to the linked list
1326 for later restoring */
1327 vxge_mac_list_add(vpath, &mac_info_new);
1328
1329 continue;
1330 }
1331 /* Delete the station address */
1332 mac_info_old.vpath_no = vpath_idx;
1333 status = vxge_del_mac_addr(vdev, &mac_info_old);
1334 }
1335
1336 if (unlikely(!is_vxge_card_up(vdev))) {
1337 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1338 return VXGE_HW_OK;
1339 }
1340
1341 /* Set this mac address to all the vpaths */
1342 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1343 mac_info_new.vpath_no = vpath_idx;
1344 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1345 status = vxge_add_mac_addr(vdev, &mac_info_new);
1346 if (status != VXGE_HW_OK)
1347 return -EINVAL;
1348 }
1349
1350 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1351
1352 return status;
1353}
1354
1355/*
1356 * vxge_vpath_intr_enable
1357 * @vdev: pointer to vdev
1358 * @vp_id: vpath for which to enable the interrupts
1359 *
1360 * Enables the interrupts for the vpath
1361*/
1362void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1363{
1364 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1365 int msix_id, alarm_msix_id;
1366 int tim_msix_id[4] = {[0 ...3] = 0};
1367
1368 vxge_hw_vpath_intr_enable(vpath->handle);
1369
1370 if (vdev->config.intr_type == INTA)
1371 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1372 else {
1373 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1374 alarm_msix_id =
1375 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1376
1377 tim_msix_id[0] = msix_id;
1378 tim_msix_id[1] = msix_id + 1;
1379 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1380 alarm_msix_id);
1381
1382 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1383 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1384
1385 /* enable the alarm vector */
1386 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
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 {
1407 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
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 */
1412 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1413 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1414 }
1415}
1416
1417/*
1418 * vxge_reset_vpath
1419 * @vdev: pointer to vdev
1420 * @vp_id: vpath to reset
1421 *
1422 * Resets the vpath
1423*/
1424static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1425{
1426 enum vxge_hw_status status = VXGE_HW_OK;
1427 int ret = 0;
1428
1429 /* check if device is down already */
1430 if (unlikely(!is_vxge_card_up(vdev)))
1431 return 0;
1432
1433 /* is device reset already scheduled */
1434 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1435 return 0;
1436
1437 if (vdev->vpaths[vp_id].handle) {
1438 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1439 == VXGE_HW_OK) {
1440 if (is_vxge_card_up(vdev) &&
1441 vxge_hw_vpath_recover_from_reset(
1442 vdev->vpaths[vp_id].handle)
1443 != VXGE_HW_OK) {
1444 vxge_debug_init(VXGE_ERR,
1445 "vxge_hw_vpath_recover_from_reset"
1446 "failed for vpath:%d", vp_id);
1447 return status;
1448 }
1449 } else {
1450 vxge_debug_init(VXGE_ERR,
1451 "vxge_hw_vpath_reset failed for"
1452 "vpath:%d", vp_id);
1453 return status;
1454 }
1455 } else
1456 return VXGE_HW_FAIL;
1457
1458 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1459 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1460
1461 /* Enable all broadcast */
1462 vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1463
1464 /* Enable the interrupts */
1465 vxge_vpath_intr_enable(vdev, vp_id);
1466
1467 smp_wmb();
1468
1469 /* Enable the flow of traffic through the vpath */
1470 vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1471
1472 smp_wmb();
1473 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1474 vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1475
1476 /* Vpath reset done */
1477 clear_bit(vp_id, &vdev->vp_reset);
1478
1479 /* Start the vpath queue */
1480 vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1481
1482 return ret;
1483}
1484
1485static int do_vxge_reset(struct vxgedev *vdev, int event)
1486{
1487 enum vxge_hw_status status;
1488 int ret = 0, vp_id, i;
1489
1490 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1491
1492 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1493 /* check if device is down already */
1494 if (unlikely(!is_vxge_card_up(vdev)))
1495 return 0;
1496
1497 /* is reset already scheduled */
1498 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1499 return 0;
1500 }
1501
1502 if (event == VXGE_LL_FULL_RESET) {
1503 /* wait for all the vpath reset to complete */
1504 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1505 while (test_bit(vp_id, &vdev->vp_reset))
1506 msleep(50);
1507 }
1508
1509 /* if execution mode is set to debug, don't reset the adapter */
1510 if (unlikely(vdev->exec_mode)) {
1511 vxge_debug_init(VXGE_ERR,
1512 "%s: execution mode is debug, returning..",
1513 vdev->ndev->name);
1514 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1515 vxge_stop_all_tx_queue(vdev);
1516 return 0;
1517 }
1518 }
1519
1520 if (event == VXGE_LL_FULL_RESET) {
1521 vxge_hw_device_intr_disable(vdev->devh);
1522
1523 switch (vdev->cric_err_event) {
1524 case VXGE_HW_EVENT_UNKNOWN:
1525 vxge_stop_all_tx_queue(vdev);
1526 vxge_debug_init(VXGE_ERR,
1527 "fatal: %s: Disabling device due to"
1528 "unknown error",
1529 vdev->ndev->name);
1530 ret = -EPERM;
1531 goto out;
1532 case VXGE_HW_EVENT_RESET_START:
1533 break;
1534 case VXGE_HW_EVENT_RESET_COMPLETE:
1535 case VXGE_HW_EVENT_LINK_DOWN:
1536 case VXGE_HW_EVENT_LINK_UP:
1537 case VXGE_HW_EVENT_ALARM_CLEARED:
1538 case VXGE_HW_EVENT_ECCERR:
1539 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1540 ret = -EPERM;
1541 goto out;
1542 case VXGE_HW_EVENT_FIFO_ERR:
1543 case VXGE_HW_EVENT_VPATH_ERR:
1544 break;
1545 case VXGE_HW_EVENT_CRITICAL_ERR:
1546 vxge_stop_all_tx_queue(vdev);
1547 vxge_debug_init(VXGE_ERR,
1548 "fatal: %s: Disabling device due to"
1549 "serious error",
1550 vdev->ndev->name);
1551 /* SOP or device reset required */
1552 /* This event is not currently used */
1553 ret = -EPERM;
1554 goto out;
1555 case VXGE_HW_EVENT_SERR:
1556 vxge_stop_all_tx_queue(vdev);
1557 vxge_debug_init(VXGE_ERR,
1558 "fatal: %s: Disabling device due to"
1559 "serious error",
1560 vdev->ndev->name);
1561 ret = -EPERM;
1562 goto out;
1563 case VXGE_HW_EVENT_SRPCIM_SERR:
1564 case VXGE_HW_EVENT_MRPCIM_SERR:
1565 ret = -EPERM;
1566 goto out;
1567 case VXGE_HW_EVENT_SLOT_FREEZE:
1568 vxge_stop_all_tx_queue(vdev);
1569 vxge_debug_init(VXGE_ERR,
1570 "fatal: %s: Disabling device due to"
1571 "slot freeze",
1572 vdev->ndev->name);
1573 ret = -EPERM;
1574 goto out;
1575 default:
1576 break;
1577
1578 }
1579 }
1580
1581 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1582 vxge_stop_all_tx_queue(vdev);
1583
1584 if (event == VXGE_LL_FULL_RESET) {
1585 status = vxge_reset_all_vpaths(vdev);
1586 if (status != VXGE_HW_OK) {
1587 vxge_debug_init(VXGE_ERR,
1588 "fatal: %s: can not reset vpaths",
1589 vdev->ndev->name);
1590 ret = -EPERM;
1591 goto out;
1592 }
1593 }
1594
1595 if (event == VXGE_LL_COMPL_RESET) {
1596 for (i = 0; i < vdev->no_of_vpath; i++)
1597 if (vdev->vpaths[i].handle) {
1598 if (vxge_hw_vpath_recover_from_reset(
1599 vdev->vpaths[i].handle)
1600 != VXGE_HW_OK) {
1601 vxge_debug_init(VXGE_ERR,
1602 "vxge_hw_vpath_recover_"
1603 "from_reset failed for vpath: "
1604 "%d", i);
1605 ret = -EPERM;
1606 goto out;
1607 }
1608 } else {
1609 vxge_debug_init(VXGE_ERR,
1610 "vxge_hw_vpath_reset failed for "
1611 "vpath:%d", i);
1612 ret = -EPERM;
1613 goto out;
1614 }
1615 }
1616
1617 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1618 /* Reprogram the DA table with populated mac addresses */
1619 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1620 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1621 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1622 }
1623
1624 /* enable vpath interrupts */
1625 for (i = 0; i < vdev->no_of_vpath; i++)
1626 vxge_vpath_intr_enable(vdev, i);
1627
1628 vxge_hw_device_intr_enable(vdev->devh);
1629
1630 smp_wmb();
1631
1632 /* Indicate card up */
1633 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1634
1635 /* Get the traffic to flow through the vpaths */
1636 for (i = 0; i < vdev->no_of_vpath; i++) {
1637 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1638 smp_wmb();
1639 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1640 }
1641
1642 vxge_wake_all_tx_queue(vdev);
1643 }
1644
1645out:
1646 vxge_debug_entryexit(VXGE_TRACE,
1647 "%s:%d Exiting...", __func__, __LINE__);
1648
1649 /* Indicate reset done */
1650 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1651 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1652 return ret;
1653}
1654
1655/*
1656 * vxge_reset
1657 * @vdev: pointer to ll device
1658 *
1659 * driver may reset the chip on events of serr, eccerr, etc
1660 */
1661int vxge_reset(struct vxgedev *vdev)
1662{
1663 do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1664 return 0;
1665}
1666
1667/**
1668 * vxge_poll - Receive handler when Receive Polling is used.
1669 * @dev: pointer to the device structure.
1670 * @budget: Number of packets budgeted to be processed in this iteration.
1671 *
1672 * This function comes into picture only if Receive side is being handled
1673 * through polling (called NAPI in linux). It mostly does what the normal
1674 * Rx interrupt handler does in terms of descriptor and packet processing
1675 * but not in an interrupt context. Also it will process a specified number
1676 * of packets at most in one iteration. This value is passed down by the
1677 * kernel as the function argument 'budget'.
1678 */
1679static int vxge_poll_msix(struct napi_struct *napi, int budget)
1680{
1681 struct vxge_ring *ring =
1682 container_of(napi, struct vxge_ring, napi);
1683 int budget_org = budget;
1684 ring->budget = budget;
1685
1686 vxge_hw_vpath_poll_rx(ring->handle);
1687
1688 if (ring->pkts_processed < budget_org) {
1689 napi_complete(napi);
1690 /* Re enable the Rx interrupts for the vpath */
1691 vxge_hw_channel_msix_unmask(
1692 (struct __vxge_hw_channel *)ring->handle,
1693 ring->rx_vector_no);
1694 }
1695
1696 return ring->pkts_processed;
1697}
1698
1699static int vxge_poll_inta(struct napi_struct *napi, int budget)
1700{
1701 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1702 int pkts_processed = 0;
1703 int i;
1704 int budget_org = budget;
1705 struct vxge_ring *ring;
1706
1707 struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)
1708 pci_get_drvdata(vdev->pdev);
1709
1710 for (i = 0; i < vdev->no_of_vpath; i++) {
1711 ring = &vdev->vpaths[i].ring;
1712 ring->budget = budget;
1713 vxge_hw_vpath_poll_rx(ring->handle);
1714 pkts_processed += ring->pkts_processed;
1715 budget -= ring->pkts_processed;
1716 if (budget <= 0)
1717 break;
1718 }
1719
1720 VXGE_COMPLETE_ALL_TX(vdev);
1721
1722 if (pkts_processed < budget_org) {
1723 napi_complete(napi);
1724 /* Re enable the Rx interrupts for the ring */
1725 vxge_hw_device_unmask_all(hldev);
1726 vxge_hw_device_flush_io(hldev);
1727 }
1728
1729 return pkts_processed;
1730}
1731
1732#ifdef CONFIG_NET_POLL_CONTROLLER
1733/**
1734 * vxge_netpoll - netpoll event handler entry point
1735 * @dev : pointer to the device structure.
1736 * Description:
1737 * This function will be called by upper layer to check for events on the
1738 * interface in situations where interrupts are disabled. It is used for
1739 * specific in-kernel networking tasks, such as remote consoles and kernel
1740 * debugging over the network (example netdump in RedHat).
1741 */
1742static void vxge_netpoll(struct net_device *dev)
1743{
1744 struct __vxge_hw_device *hldev;
1745 struct vxgedev *vdev;
1746
1747 vdev = (struct vxgedev *)netdev_priv(dev);
1748 hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1749
1750 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1751
1752 if (pci_channel_offline(vdev->pdev))
1753 return;
1754
1755 disable_irq(dev->irq);
1756 vxge_hw_device_clear_tx_rx(hldev);
1757
1758 vxge_hw_device_clear_tx_rx(hldev);
1759 VXGE_COMPLETE_ALL_RX(vdev);
1760 VXGE_COMPLETE_ALL_TX(vdev);
1761
1762 enable_irq(dev->irq);
1763
1764 vxge_debug_entryexit(VXGE_TRACE,
1765 "%s:%d Exiting...", __func__, __LINE__);
1766 return;
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;
2225 int alarm_msix_id =
2226 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2227
2228 for (i = 0; i < vdev->no_of_vpath; i++) {
2229 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2230 alarm_msix_id);
2231
2232 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2233 vdev->exec_mode);
2234 if (status == VXGE_HW_OK) {
2235
2236 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2237 alarm_msix_id);
2238 continue;
2239 }
2240 vxge_debug_intr(VXGE_ERR,
2241 "%s: vxge_hw_vpath_alarm_process failed %x ",
2242 VXGE_DRIVER_NAME, status);
2243 }
2244 return IRQ_HANDLED;
2245}
2246
2247static int vxge_alloc_msix(struct vxgedev *vdev)
2248{
2249 int j, i, ret = 0;
2250 int intr_cnt = 0;
2251 int alarm_msix_id = 0, msix_intr_vect = 0;
2252 vdev->intr_cnt = 0;
2253
2254 /* Tx/Rx MSIX Vectors count */
2255 vdev->intr_cnt = vdev->no_of_vpath * 2;
2256
2257 /* Alarm MSIX Vectors count */
2258 vdev->intr_cnt++;
2259
2260 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2261 vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2262 GFP_KERNEL);
2263 if (!vdev->entries) {
2264 vxge_debug_init(VXGE_ERR,
2265 "%s: memory allocation failed",
2266 VXGE_DRIVER_NAME);
2267 return -ENOMEM;
2268 }
2269
2270 vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2271 GFP_KERNEL);
2272 if (!vdev->vxge_entries) {
2273 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2274 VXGE_DRIVER_NAME);
2275 kfree(vdev->entries);
2276 return -ENOMEM;
2277 }
2278
2279 /* Last vector in the list is used for alarm */
2280 alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2281 for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2282
2283 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2284
2285 /* Initialize the fifo vector */
2286 vdev->entries[j].entry = msix_intr_vect;
2287 vdev->vxge_entries[j].entry = msix_intr_vect;
2288 vdev->vxge_entries[j].in_use = 0;
2289 j++;
2290
2291 /* Initialize the ring vector */
2292 vdev->entries[j].entry = msix_intr_vect + 1;
2293 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2294 vdev->vxge_entries[j].in_use = 0;
2295 j++;
2296 }
2297
2298 /* Initialize the alarm vector */
2299 vdev->entries[j].entry = alarm_msix_id;
2300 vdev->vxge_entries[j].entry = alarm_msix_id;
2301 vdev->vxge_entries[j].in_use = 0;
2302
2303 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2304 /* if driver request exceeeds available irq's, request with a small
2305 * number.
2306 */
2307 if (ret > 0) {
2308 vxge_debug_init(VXGE_ERR,
2309 "%s: MSI-X enable failed for %d vectors, available: %d",
2310 VXGE_DRIVER_NAME, intr_cnt, ret);
2311 vdev->max_vpath_supported = vdev->no_of_vpath;
2312 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2313
2314 /* Reset the alarm vector setting */
2315 vdev->entries[j].entry = 0;
2316 vdev->vxge_entries[j].entry = 0;
2317
2318 /* Initialize the alarm vector with new setting */
2319 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2320 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2321 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2322
2323 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2324 if (!ret)
2325 vxge_debug_init(VXGE_ERR,
2326 "%s: MSI-X enabled for %d vectors",
2327 VXGE_DRIVER_NAME, intr_cnt);
2328 }
2329
2330 if (ret) {
2331 vxge_debug_init(VXGE_ERR,
2332 "%s: MSI-X enable failed for %d vectors, ret: %d",
2333 VXGE_DRIVER_NAME, intr_cnt, ret);
2334 kfree(vdev->entries);
2335 kfree(vdev->vxge_entries);
2336 vdev->entries = NULL;
2337 vdev->vxge_entries = NULL;
2338 return -ENODEV;
2339 }
2340 return 0;
2341}
2342
2343static int vxge_enable_msix(struct vxgedev *vdev)
2344{
2345
2346 int i, ret = 0;
2347 enum vxge_hw_status status;
2348 /* 0 - Tx, 1 - Rx */
2349 int tim_msix_id[4];
2350 int alarm_msix_id = 0, msix_intr_vect = 0;;
2351 vdev->intr_cnt = 0;
2352
2353 /* allocate msix vectors */
2354 ret = vxge_alloc_msix(vdev);
2355 if (!ret) {
2356 /* Last vector in the list is used for alarm */
2357 alarm_msix_id =
2358 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2359 for (i = 0; i < vdev->no_of_vpath; i++) {
2360
2361 /* If fifo or ring are not enabled
2362 the MSIX vector for that should be set to 0
2363 Hence initializeing this array to all 0s.
2364 */
2365 memset(tim_msix_id, 0, sizeof(tim_msix_id));
2366 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2367 tim_msix_id[0] = msix_intr_vect;
2368
2369 tim_msix_id[1] = msix_intr_vect + 1;
2370 vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2371
2372 status = vxge_hw_vpath_msix_set(
2373 vdev->vpaths[i].handle,
2374 tim_msix_id, alarm_msix_id);
2375 if (status != VXGE_HW_OK) {
2376 vxge_debug_init(VXGE_ERR,
2377 "vxge_hw_vpath_msix_set "
2378 "failed with status : %x", status);
2379 kfree(vdev->entries);
2380 kfree(vdev->vxge_entries);
2381 pci_disable_msix(vdev->pdev);
2382 return -ENODEV;
2383 }
2384 }
2385 }
2386
2387 return ret;
2388}
2389
2390static void vxge_rem_msix_isr(struct vxgedev *vdev)
2391{
2392 int intr_cnt;
2393
2394 for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2395 intr_cnt++) {
2396 if (vdev->vxge_entries[intr_cnt].in_use) {
2397 synchronize_irq(vdev->entries[intr_cnt].vector);
2398 free_irq(vdev->entries[intr_cnt].vector,
2399 vdev->vxge_entries[intr_cnt].arg);
2400 vdev->vxge_entries[intr_cnt].in_use = 0;
2401 }
2402 }
2403
2404 kfree(vdev->entries);
2405 kfree(vdev->vxge_entries);
2406 vdev->entries = NULL;
2407 vdev->vxge_entries = NULL;
2408
2409 if (vdev->config.intr_type == MSI_X)
2410 pci_disable_msix(vdev->pdev);
2411}
2412#endif
2413
2414static void vxge_rem_isr(struct vxgedev *vdev)
2415{
2416 struct __vxge_hw_device *hldev;
2417 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2418
2419#ifdef CONFIG_PCI_MSI
2420 if (vdev->config.intr_type == MSI_X) {
2421 vxge_rem_msix_isr(vdev);
2422 } else
2423#endif
2424 if (vdev->config.intr_type == INTA) {
2425 synchronize_irq(vdev->pdev->irq);
a5d165b5 2426 free_irq(vdev->pdev->irq, vdev);
703da5a1
RV		 2427 }
2428}
2429
2430static int vxge_add_isr(struct vxgedev *vdev)
2431{
2432 int ret = 0;
703da5a1
RV		 2433#ifdef CONFIG_PCI_MSI
2434 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2435 u64 function_mode = vdev->config.device_hw_info.function_mode;
2436 int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2437
2438 if (vdev->config.intr_type == MSI_X)
2439 ret = vxge_enable_msix(vdev);
2440
2441 if (ret) {
2442 vxge_debug_init(VXGE_ERR,
2443 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2444 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2445 test_and_set_bit(__VXGE_STATE_CARD_UP,
2446 &driver_config->inta_dev_open))
2447 return VXGE_HW_FAIL;
2448 else {
2449 vxge_debug_init(VXGE_ERR,
2450 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2451 vdev->config.intr_type = INTA;
2452 vxge_hw_device_set_intr_type(vdev->devh,
2453 VXGE_HW_INTR_MODE_IRQLINE);
2454 vxge_close_vpaths(vdev, 1);
2455 vdev->no_of_vpath = 1;
2456 vdev->stats.vpaths_open = 1;
2457 }
2458 }
2459
2460 if (vdev->config.intr_type == MSI_X) {
2461 for (intr_idx = 0;
2462 intr_idx < (vdev->no_of_vpath *
2463 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2464
2465 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2466 irq_req = 0;
2467
2468 switch (msix_idx) {
2469 case 0:
2470 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2471 "%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
2472 vdev->ndev->name, pci_fun, vp_idx,
2473 vdev->entries[intr_cnt].entry);
2474 ret = request_irq(
2475 vdev->entries[intr_cnt].vector,
2476 vxge_tx_msix_handle, 0,
2477 vdev->desc[intr_cnt],
2478 &vdev->vpaths[vp_idx].fifo);
2479 vdev->vxge_entries[intr_cnt].arg =
2480 &vdev->vpaths[vp_idx].fifo;
2481 irq_req = 1;
2482 break;
2483 case 1:
2484 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2485 "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2486 vdev->ndev->name, pci_fun, vp_idx,
2487 vdev->entries[intr_cnt].entry);
2488 ret = request_irq(
2489 vdev->entries[intr_cnt].vector,
2490 vxge_rx_msix_napi_handle,
2491 0,
2492 vdev->desc[intr_cnt],
2493 &vdev->vpaths[vp_idx].ring);
2494 vdev->vxge_entries[intr_cnt].arg =
2495 &vdev->vpaths[vp_idx].ring;
2496 irq_req = 1;
2497 break;
2498 }
2499
2500 if (ret) {
2501 vxge_debug_init(VXGE_ERR,
2502 "%s: MSIX - %d Registration failed",
2503 vdev->ndev->name, intr_cnt);
2504 vxge_rem_msix_isr(vdev);
2505 if ((function_mode ==
2506 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2507 test_and_set_bit(__VXGE_STATE_CARD_UP,
2508 &driver_config->inta_dev_open))
2509 return VXGE_HW_FAIL;
2510 else {
2511 vxge_hw_device_set_intr_type(
2512 vdev->devh,
2513 VXGE_HW_INTR_MODE_IRQLINE);
2514 vdev->config.intr_type = INTA;
2515 vxge_debug_init(VXGE_ERR,
2516 "%s: Defaulting to INTA"
2517 , vdev->ndev->name);
2518 vxge_close_vpaths(vdev, 1);
2519 vdev->no_of_vpath = 1;
2520 vdev->stats.vpaths_open = 1;
2521 goto INTA_MODE;
2522 }
2523 }
2524
2525 if (irq_req) {
2526 /* We requested for this msix interrupt */
2527 vdev->vxge_entries[intr_cnt].in_use = 1;
2528 vxge_hw_vpath_msix_unmask(
2529 vdev->vpaths[vp_idx].handle,
2530 intr_idx);
2531 intr_cnt++;
2532 }
2533
2534 /* Point to next vpath handler */
2535 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
2536 && (vp_idx < (vdev->no_of_vpath - 1)))
2537 vp_idx++;
2538 }
2539
2540 intr_cnt = vdev->max_vpath_supported * 2;
2541 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2542 "%s:vxge Alarm fn: %d MSI-X: %d",
2543 vdev->ndev->name, pci_fun,
2544 vdev->entries[intr_cnt].entry);
2545 /* For Alarm interrupts */
2546 ret = request_irq(vdev->entries[intr_cnt].vector,
2547 vxge_alarm_msix_handle, 0,
2548 vdev->desc[intr_cnt],
2549 &vdev->vpaths[vp_idx]);
2550 if (ret) {
2551 vxge_debug_init(VXGE_ERR,
2552 "%s: MSIX - %d Registration failed",
2553 vdev->ndev->name, intr_cnt);
2554 vxge_rem_msix_isr(vdev);
2555 if ((function_mode ==
2556 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2557 test_and_set_bit(__VXGE_STATE_CARD_UP,
2558 &driver_config->inta_dev_open))
2559 return VXGE_HW_FAIL;
2560 else {
2561 vxge_hw_device_set_intr_type(vdev->devh,
2562 VXGE_HW_INTR_MODE_IRQLINE);
2563 vdev->config.intr_type = INTA;
2564 vxge_debug_init(VXGE_ERR,
2565 "%s: Defaulting to INTA",
2566 vdev->ndev->name);
2567 vxge_close_vpaths(vdev, 1);
2568 vdev->no_of_vpath = 1;
2569 vdev->stats.vpaths_open = 1;
2570 goto INTA_MODE;
2571 }
2572 }
2573
2574 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2575 intr_idx - 2);
2576 vdev->vxge_entries[intr_cnt].in_use = 1;
2577 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2578 }
2579INTA_MODE:
2580#endif
2581 snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2582
2583 if (vdev->config.intr_type == INTA) {
2584 ret = request_irq((int) vdev->pdev->irq,
2585 vxge_isr_napi,
a5d165b5 2586 IRQF_SHARED, vdev->desc[0], vdev);
703da5a1
RV		 2587 if (ret) {
2588 vxge_debug_init(VXGE_ERR,
2589 "%s %s-%d: ISR registration failed",
2590 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2591 return -ENODEV;
2592 }
2593 vxge_debug_init(VXGE_TRACE,
2594 "new %s-%d line allocated",
2595 "IRQ", vdev->pdev->irq);
2596 }
2597
2598 return VXGE_HW_OK;
2599}
2600
2601static void vxge_poll_vp_reset(unsigned long data)
2602{
2603 struct vxgedev *vdev = (struct vxgedev *)data;
2604 int i, j = 0;
2605
2606 for (i = 0; i < vdev->no_of_vpath; i++) {
2607 if (test_bit(i, &vdev->vp_reset)) {
2608 vxge_reset_vpath(vdev, i);
2609 j++;
2610 }
2611 }
2612 if (j && (vdev->config.intr_type != MSI_X)) {
2613 vxge_hw_device_unmask_all(vdev->devh);
2614 vxge_hw_device_flush_io(vdev->devh);
2615 }
2616
2617 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2618}
2619
2620static void vxge_poll_vp_lockup(unsigned long data)
2621{
2622 struct vxgedev *vdev = (struct vxgedev *)data;
2623 int i;
2624 struct vxge_ring *ring;
2625 enum vxge_hw_status status = VXGE_HW_OK;
2626
2627 for (i = 0; i < vdev->no_of_vpath; i++) {
2628 ring = &vdev->vpaths[i].ring;
2629 /* Did this vpath received any packets */
2630 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2631 status = vxge_hw_vpath_check_leak(ring->handle);
2632
2633 /* Did it received any packets last time */
2634 if ((VXGE_HW_FAIL == status) &&
2635 (VXGE_HW_FAIL == ring->last_status)) {
2636
2637 /* schedule vpath reset */
2638 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2639
2640 /* disable interrupts for this vpath */
2641 vxge_vpath_intr_disable(vdev, i);
2642
2643 /* stop the queue for this vpath */
2644 vxge_stop_tx_queue(&vdev->vpaths[i].
2645 fifo);
2646 continue;
2647 }
2648 }
2649 }
2650 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2651 ring->last_status = status;
2652 }
2653
2654 /* Check every 1 milli second */
2655 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2656}
2657
2658/**
2659 * vxge_open
2660 * @dev: pointer to the device structure.
2661 *
2662 * This function is the open entry point of the driver. It mainly calls a
2663 * function to allocate Rx buffers and inserts them into the buffer
2664 * descriptors and then enables the Rx part of the NIC.
2665 * Return value: '0' on success and an appropriate (-)ve integer as
2666 * defined in errno.h file on failure.
2667 */
2668int
2669vxge_open(struct net_device *dev)
2670{
2671 enum vxge_hw_status status;
2672 struct vxgedev *vdev;
2673 struct __vxge_hw_device *hldev;
2674 int ret = 0;
2675 int i;
2676 u64 val64, function_mode;
2677 vxge_debug_entryexit(VXGE_TRACE,
2678 "%s: %s:%d", dev->name, __func__, __LINE__);
2679
2680 vdev = (struct vxgedev *)netdev_priv(dev);
2681 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2682 function_mode = vdev->config.device_hw_info.function_mode;
2683
2684 /* make sure you have link off by default every time Nic is
2685 * initialized */
2686 netif_carrier_off(dev);
2687
2688 /* Check for another device already opn with INTA */
2689 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2690 test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
2691 ret = -EPERM;
2692 goto out0;
2693 }
2694
2695 /* Open VPATHs */
2696 status = vxge_open_vpaths(vdev);
2697 if (status != VXGE_HW_OK) {
2698 vxge_debug_init(VXGE_ERR,
2699 "%s: fatal: Vpath open failed", vdev->ndev->name);
2700 ret = -EPERM;
2701 goto out0;
2702 }
2703
2704 vdev->mtu = dev->mtu;
2705
2706 status = vxge_add_isr(vdev);
2707 if (status != VXGE_HW_OK) {
2708 vxge_debug_init(VXGE_ERR,
2709 "%s: fatal: ISR add failed", dev->name);
2710 ret = -EPERM;
2711 goto out1;
2712 }
2713
2714
2715 if (vdev->config.intr_type != MSI_X) {
2716 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2717 vdev->config.napi_weight);
2718 napi_enable(&vdev->napi);
a5d165b5
SH		 2719 for (i = 0; i < vdev->no_of_vpath; i++)
2720 vdev->vpaths[i].ring.napi_p = &vdev->napi;
703da5a1
RV		 2721 } else {
2722 for (i = 0; i < vdev->no_of_vpath; i++) {
2723 netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2724 vxge_poll_msix, vdev->config.napi_weight);
2725 napi_enable(&vdev->vpaths[i].ring.napi);
a5d165b5
SH		 2726 vdev->vpaths[i].ring.napi_p =
2727 &vdev->vpaths[i].ring.napi;
703da5a1
RV		 2728 }
2729 }
2730
2731 /* configure RTH */
2732 if (vdev->config.rth_steering) {
2733 status = vxge_rth_configure(vdev);
2734 if (status != VXGE_HW_OK) {
2735 vxge_debug_init(VXGE_ERR,
2736 "%s: fatal: RTH configuration failed",
2737 dev->name);
2738 ret = -EPERM;
2739 goto out2;
2740 }
2741 }
2742
2743 for (i = 0; i < vdev->no_of_vpath; i++) {
2744 /* set initial mtu before enabling the device */
2745 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2746 vdev->mtu);
2747 if (status != VXGE_HW_OK) {
2748 vxge_debug_init(VXGE_ERR,
2749 "%s: fatal: can not set new MTU", dev->name);
2750 ret = -EPERM;
2751 goto out2;
2752 }
2753 }
2754
2755 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2756 vxge_debug_init(vdev->level_trace,
2757 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2758 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2759
2760 /* Reprogram the DA table with populated mac addresses */
2761 for (i = 0; i < vdev->no_of_vpath; i++) {
2762 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2763 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2764 }
2765
2766 /* Enable vpath to sniff all unicast/multicast traffic that not
2767 * addressed to them. We allow promiscous mode for PF only
2768 */
2769
2770 val64 = 0;
2771 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2772 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2773
2774 vxge_hw_mgmt_reg_write(vdev->devh,
2775 vxge_hw_mgmt_reg_type_mrpcim,
2776 0,
2777 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2778 rxmac_authorize_all_addr),
2779 val64);
2780
2781 vxge_hw_mgmt_reg_write(vdev->devh,
2782 vxge_hw_mgmt_reg_type_mrpcim,
2783 0,
2784 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2785 rxmac_authorize_all_vid),
2786 val64);
2787
2788 vxge_set_multicast(dev);
2789
2790 /* Enabling Bcast and mcast for all vpath */
2791 for (i = 0; i < vdev->no_of_vpath; i++) {
2792 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2793 if (status != VXGE_HW_OK)
2794 vxge_debug_init(VXGE_ERR,
2795 "%s : Can not enable bcast for vpath "
2796 "id %d", dev->name, i);
2797 if (vdev->config.addr_learn_en) {
2798 status =
2799 vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2800 if (status != VXGE_HW_OK)
2801 vxge_debug_init(VXGE_ERR,
2802 "%s : Can not enable mcast for vpath "
2803 "id %d", dev->name, i);
2804 }
2805 }
2806
2807 vxge_hw_device_setpause_data(vdev->devh, 0,
2808 vdev->config.tx_pause_enable,
2809 vdev->config.rx_pause_enable);
2810
2811 if (vdev->vp_reset_timer.function == NULL)
2812 vxge_os_timer(vdev->vp_reset_timer,
2813 vxge_poll_vp_reset, vdev, (HZ/2));
2814
2815 if (vdev->vp_lockup_timer.function == NULL)
2816 vxge_os_timer(vdev->vp_lockup_timer,
2817 vxge_poll_vp_lockup, vdev, (HZ/2));
2818
2819 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2820
2821 smp_wmb();
2822
2823 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2824 netif_carrier_on(vdev->ndev);
2825 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2826 vdev->stats.link_up++;
2827 }
2828
2829 vxge_hw_device_intr_enable(vdev->devh);
2830
2831 smp_wmb();
2832
2833 for (i = 0; i < vdev->no_of_vpath; i++) {
2834 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2835 smp_wmb();
2836 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2837 }
2838
2839 vxge_start_all_tx_queue(vdev);
2840 goto out0;
2841
2842out2:
2843 vxge_rem_isr(vdev);
2844
2845 /* Disable napi */
2846 if (vdev->config.intr_type != MSI_X)
2847 napi_disable(&vdev->napi);
2848 else {
2849 for (i = 0; i < vdev->no_of_vpath; i++)
2850 napi_disable(&vdev->vpaths[i].ring.napi);
2851 }
2852
2853out1:
2854 vxge_close_vpaths(vdev, 0);
2855out0:
2856 vxge_debug_entryexit(VXGE_TRACE,
2857 "%s: %s:%d Exiting...",
2858 dev->name, __func__, __LINE__);
2859 return ret;
2860}
2861
2862/* Loop throught the mac address list and delete all the entries */
2863void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2864{
2865
2866 struct list_head *entry, *next;
2867 if (list_empty(&vpath->mac_addr_list))
2868 return;
2869
2870 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2871 list_del(entry);
2872 kfree((struct vxge_mac_addrs *)entry);
2873 }
2874}
2875
2876static void vxge_napi_del_all(struct vxgedev *vdev)
2877{
2878 int i;
2879 if (vdev->config.intr_type != MSI_X)
2880 netif_napi_del(&vdev->napi);
2881 else {
2882 for (i = 0; i < vdev->no_of_vpath; i++)
2883 netif_napi_del(&vdev->vpaths[i].ring.napi);
2884 }
2885 return;
2886}
2887
2888int do_vxge_close(struct net_device *dev, int do_io)
2889{
2890 enum vxge_hw_status status;
2891 struct vxgedev *vdev;
2892 struct __vxge_hw_device *hldev;
2893 int i;
2894 u64 val64, vpath_vector;
2895 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2896 dev->name, __func__, __LINE__);
2897
2898 vdev = (struct vxgedev *)netdev_priv(dev);
2899 hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2900
bd9ee680
SH		 2901 if (unlikely(!is_vxge_card_up(vdev)))
2902 return 0;
2903
703da5a1
RV		 2904 /* If vxge_handle_crit_err task is executing,
2905 * wait till it completes. */
2906 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2907 msleep(50);
2908
2909 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2910 if (do_io) {
2911 /* Put the vpath back in normal mode */
2912 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2913 status = vxge_hw_mgmt_reg_read(vdev->devh,
2914 vxge_hw_mgmt_reg_type_mrpcim,
2915 0,
2916 (ulong)offsetof(
2917 struct vxge_hw_mrpcim_reg,
2918 rts_mgr_cbasin_cfg),
2919 &val64);
2920
2921 if (status == VXGE_HW_OK) {
2922 val64 &= ~vpath_vector;
2923 status = vxge_hw_mgmt_reg_write(vdev->devh,
2924 vxge_hw_mgmt_reg_type_mrpcim,
2925 0,
2926 (ulong)offsetof(
2927 struct vxge_hw_mrpcim_reg,
2928 rts_mgr_cbasin_cfg),
2929 val64);
2930 }
2931
2932 /* Remove the function 0 from promiscous mode */
2933 vxge_hw_mgmt_reg_write(vdev->devh,
2934 vxge_hw_mgmt_reg_type_mrpcim,
2935 0,
2936 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2937 rxmac_authorize_all_addr),
2938 0);
2939
2940 vxge_hw_mgmt_reg_write(vdev->devh,
2941 vxge_hw_mgmt_reg_type_mrpcim,
2942 0,
2943 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2944 rxmac_authorize_all_vid),
2945 0);
2946
2947 smp_wmb();
2948 }
2949 del_timer_sync(&vdev->vp_lockup_timer);
2950
2951 del_timer_sync(&vdev->vp_reset_timer);
2952
2953 /* Disable napi */
2954 if (vdev->config.intr_type != MSI_X)
2955 napi_disable(&vdev->napi);
2956 else {
2957 for (i = 0; i < vdev->no_of_vpath; i++)
2958 napi_disable(&vdev->vpaths[i].ring.napi);
2959 }
2960
2961 netif_carrier_off(vdev->ndev);
2962 printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2963 vxge_stop_all_tx_queue(vdev);
2964
2965 /* Note that at this point xmit() is stopped by upper layer */
2966 if (do_io)
2967 vxge_hw_device_intr_disable(vdev->devh);
2968
2969 mdelay(1000);
2970
2971 vxge_rem_isr(vdev);
2972
2973 vxge_napi_del_all(vdev);
2974
2975 if (do_io)
2976 vxge_reset_all_vpaths(vdev);
2977
2978 vxge_close_vpaths(vdev, 0);
2979
2980 vxge_debug_entryexit(VXGE_TRACE,
2981 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
2982
2983 clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
2984 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2985
2986 return 0;
2987}
2988
2989/**
2990 * vxge_close
2991 * @dev: device pointer.
2992 *
2993 * This is the stop entry point of the driver. It needs to undo exactly
2994 * whatever was done by the open entry point, thus it's usually referred to
2995 * as the close function.Among other things this function mainly stops the
2996 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2997 * Return value: '0' on success and an appropriate (-)ve integer as
2998 * defined in errno.h file on failure.
2999 */
3000int
3001vxge_close(struct net_device *dev)
3002{
3003 do_vxge_close(dev, 1);
3004 return 0;
3005}
3006
3007/**
3008 * vxge_change_mtu
3009 * @dev: net device pointer.
3010 * @new_mtu :the new MTU size for the device.
3011 *
3012 * A driver entry point to change MTU size for the device. Before changing
3013 * the MTU the device must be stopped.
3014 */
3015static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3016{
3017 struct vxgedev *vdev = netdev_priv(dev);
3018
3019 vxge_debug_entryexit(vdev->level_trace,
3020 "%s:%d", __func__, __LINE__);
3021 if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3022 vxge_debug_init(vdev->level_err,
3023 "%s: mtu size is invalid", dev->name);
3024 return -EPERM;
3025 }
3026
3027 /* check if device is down already */
3028 if (unlikely(!is_vxge_card_up(vdev))) {
3029 /* just store new value, will use later on open() */
3030 dev->mtu = new_mtu;
3031 vxge_debug_init(vdev->level_err,
3032 "%s", "device is down on MTU change");
3033 return 0;
3034 }
3035
3036 vxge_debug_init(vdev->level_trace,
3037 "trying to apply new MTU %d", new_mtu);
3038
3039 if (vxge_close(dev))
3040 return -EIO;
3041
3042 dev->mtu = new_mtu;
3043 vdev->mtu = new_mtu;
3044
3045 if (vxge_open(dev))
3046 return -EIO;
3047
3048 vxge_debug_init(vdev->level_trace,
3049 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3050
3051 vxge_debug_entryexit(vdev->level_trace,
3052 "%s:%d Exiting...", __func__, __LINE__);
3053
3054 return 0;
3055}
3056
3057/**
3058 * vxge_get_stats
3059 * @dev: pointer to the device structure
3060 *
3061 * Updates the device statistics structure. This function updates the device
3062 * statistics structure in the net_device structure and returns a pointer
3063 * to the same.
3064 */
3065static struct net_device_stats *
3066vxge_get_stats(struct net_device *dev)
3067{
3068 struct vxgedev *vdev;
3069 struct net_device_stats *net_stats;
3070 int k;
3071
3072 vdev = netdev_priv(dev);
3073
3074 net_stats = &vdev->stats.net_stats;
3075
3076 memset(net_stats, 0, sizeof(struct net_device_stats));
3077
3078 for (k = 0; k < vdev->no_of_vpath; k++) {
3079 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3080 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3081 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3082 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3083 net_stats->rx_dropped +=
3084 vdev->vpaths[k].ring.stats.rx_dropped;
3085
3086 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3087 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3088 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3089 }
3090
3091 return net_stats;
3092}
3093
3094/**
3095 * vxge_ioctl
3096 * @dev: Device pointer.
3097 * @ifr: An IOCTL specific structure, that can contain a pointer to
3098 * a proprietary structure used to pass information to the driver.
3099 * @cmd: This is used to distinguish between the different commands that
3100 * can be passed to the IOCTL functions.
3101 *
3102 * Entry point for the Ioctl.
3103 */
3104static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3105{
3106 return -EOPNOTSUPP;
3107}
3108
3109/**
3110 * vxge_tx_watchdog
3111 * @dev: pointer to net device structure
3112 *
3113 * Watchdog for transmit side.
3114 * This function is triggered if the Tx Queue is stopped
3115 * for a pre-defined amount of time when the Interface is still up.
3116 */
3117static void
3118vxge_tx_watchdog(struct net_device *dev)
3119{
3120 struct vxgedev *vdev;
3121
3122 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3123
3124 vdev = (struct vxgedev *)netdev_priv(dev);
3125
3126 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3127
3128 vxge_reset(vdev);
3129 vxge_debug_entryexit(VXGE_TRACE,
3130 "%s:%d Exiting...", __func__, __LINE__);
3131}
3132
3133/**
3134 * vxge_vlan_rx_register
3135 * @dev: net device pointer.
3136 * @grp: vlan group
3137 *
3138 * Vlan group registration
3139 */
3140static void
3141vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3142{
3143 struct vxgedev *vdev;
3144 struct vxge_vpath *vpath;
3145 int vp;
3146 u64 vid;
3147 enum vxge_hw_status status;
3148 int i;
3149
3150 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3151
3152 vdev = (struct vxgedev *)netdev_priv(dev);
3153
3154 vpath = &vdev->vpaths[0];
3155 if ((NULL == grp) && (vpath->is_open)) {
3156 /* Get the first vlan */
3157 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3158
3159 while (status == VXGE_HW_OK) {
3160
3161 /* Delete this vlan from the vid table */
3162 for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3163 vpath = &vdev->vpaths[vp];
3164 if (!vpath->is_open)
3165 continue;
3166
3167 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3168 }
3169
3170 /* Get the next vlan to be deleted */
3171 vpath = &vdev->vpaths[0];
3172 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3173 }
3174 }
3175
3176 vdev->vlgrp = grp;
3177
3178 for (i = 0; i < vdev->no_of_vpath; i++) {
3179 if (vdev->vpaths[i].is_configured)
3180 vdev->vpaths[i].ring.vlgrp = grp;
3181 }
3182
3183 vxge_debug_entryexit(VXGE_TRACE,
3184 "%s:%d Exiting...", __func__, __LINE__);
3185}
3186
3187/**
3188 * vxge_vlan_rx_add_vid
3189 * @dev: net device pointer.
3190 * @vid: vid
3191 *
3192 * Add the vlan id to the devices vlan id table
3193 */
3194static void
3195vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3196{
3197 struct vxgedev *vdev;
3198 struct vxge_vpath *vpath;
3199 int vp_id;
3200
3201 vdev = (struct vxgedev *)netdev_priv(dev);
3202
3203 /* Add these vlan to the vid table */
3204 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3205 vpath = &vdev->vpaths[vp_id];
3206 if (!vpath->is_open)
3207 continue;
3208 vxge_hw_vpath_vid_add(vpath->handle, vid);
3209 }
3210}
3211
3212/**
3213 * vxge_vlan_rx_add_vid
3214 * @dev: net device pointer.
3215 * @vid: vid
3216 *
3217 * Remove the vlan id from the device's vlan id table
3218 */
3219static void
3220vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3221{
3222 struct vxgedev *vdev;
3223 struct vxge_vpath *vpath;
3224 int vp_id;
3225
3226 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3227
3228 vdev = (struct vxgedev *)netdev_priv(dev);
3229
3230 vlan_group_set_device(vdev->vlgrp, vid, NULL);
3231
3232 /* Delete this vlan from the vid table */
3233 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3234 vpath = &vdev->vpaths[vp_id];
3235 if (!vpath->is_open)
3236 continue;
3237 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3238 }
3239 vxge_debug_entryexit(VXGE_TRACE,
3240 "%s:%d Exiting...", __func__, __LINE__);
3241}
3242
3243static const struct net_device_ops vxge_netdev_ops = {
3244 .ndo_open = vxge_open,
3245 .ndo_stop = vxge_close,
3246 .ndo_get_stats = vxge_get_stats,
3247 .ndo_start_xmit = vxge_xmit,
3248 .ndo_validate_addr = eth_validate_addr,
3249 .ndo_set_multicast_list = vxge_set_multicast,
3250
3251 .ndo_do_ioctl = vxge_ioctl,
3252
3253 .ndo_set_mac_address = vxge_set_mac_addr,
3254 .ndo_change_mtu = vxge_change_mtu,
3255 .ndo_vlan_rx_register = vxge_vlan_rx_register,
3256 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3257 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3258
3259 .ndo_tx_timeout = vxge_tx_watchdog,
3260#ifdef CONFIG_NET_POLL_CONTROLLER
3261 .ndo_poll_controller = vxge_netpoll,
3262#endif
3263};
3264
3265int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3266 struct vxge_config *config,
3267 int high_dma, int no_of_vpath,
3268 struct vxgedev **vdev_out)
3269{
3270 struct net_device *ndev;
3271 enum vxge_hw_status status = VXGE_HW_OK;
3272 struct vxgedev *vdev;
3273 int i, ret = 0, no_of_queue = 1;
3274 u64 stat;
3275
3276 *vdev_out = NULL;
3277 if (config->tx_steering_type == TX_MULTIQ_STEERING)
3278 no_of_queue = no_of_vpath;
3279
3280 ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3281 no_of_queue);
3282 if (ndev == NULL) {
3283 vxge_debug_init(
3284 vxge_hw_device_trace_level_get(hldev),
3285 "%s : device allocation failed", __func__);
3286 ret = -ENODEV;
3287 goto _out0;
3288 }
3289
3290 vxge_debug_entryexit(
3291 vxge_hw_device_trace_level_get(hldev),
3292 "%s: %s:%d Entering...",
3293 ndev->name, __func__, __LINE__);
3294
3295 vdev = netdev_priv(ndev);
3296 memset(vdev, 0, sizeof(struct vxgedev));
3297
3298 vdev->ndev = ndev;
3299 vdev->devh = hldev;
3300 vdev->pdev = hldev->pdev;
3301 memcpy(&vdev->config, config, sizeof(struct vxge_config));
3302 vdev->rx_csum = 1; /* Enable Rx CSUM by default. */
3303
3304 SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3305
3306 ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3307 NETIF_F_HW_VLAN_FILTER;
3308 /* Driver entry points */
3309 ndev->irq = vdev->pdev->irq;
3310 ndev->base_addr = (unsigned long) hldev->bar0;
3311
3312 ndev->netdev_ops = &vxge_netdev_ops;
3313
3314 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3315
3316 initialize_ethtool_ops(ndev);
3317
3318 /* Allocate memory for vpath */
3319 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3320 no_of_vpath, GFP_KERNEL);
3321 if (!vdev->vpaths) {
3322 vxge_debug_init(VXGE_ERR,
3323 "%s: vpath memory allocation failed",
3324 vdev->ndev->name);
3325 ret = -ENODEV;
3326 goto _out1;
3327 }
3328
3329 ndev->features |= NETIF_F_SG;
3330
3331 ndev->features |= NETIF_F_HW_CSUM;
3332 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3333 "%s : checksuming enabled", __func__);
3334
3335 if (high_dma) {
3336 ndev->features |= NETIF_F_HIGHDMA;
3337 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3338 "%s : using High DMA", __func__);
3339 }
3340
3341 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3342
3343 if (vdev->config.gro_enable)
3344 ndev->features |= NETIF_F_GRO;
3345
3346 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3347 ndev->real_num_tx_queues = no_of_vpath;
3348
3349#ifdef NETIF_F_LLTX
3350 ndev->features |= NETIF_F_LLTX;
3351#endif
3352
3353 for (i = 0; i < no_of_vpath; i++)
3354 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3355
3356 if (register_netdev(ndev)) {
3357 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3358 "%s: %s : device registration failed!",
3359 ndev->name, __func__);
3360 ret = -ENODEV;
3361 goto _out2;
3362 }
3363
3364 /* Set the factory defined MAC address initially */
3365 ndev->addr_len = ETH_ALEN;
3366
3367 /* Make Link state as off at this point, when the Link change
3368 * interrupt comes the state will be automatically changed to
3369 * the right state.
3370 */
3371 netif_carrier_off(ndev);
3372
3373 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3374 "%s: Ethernet device registered",
3375 ndev->name);
3376
3377 *vdev_out = vdev;
3378
3379 /* Resetting the Device stats */
3380 status = vxge_hw_mrpcim_stats_access(
3381 hldev,
3382 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3383 0,
3384 0,
3385 &stat);
3386
3387 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3388 vxge_debug_init(
3389 vxge_hw_device_trace_level_get(hldev),
3390 "%s: device stats clear returns"
3391 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3392
3393 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3394 "%s: %s:%d Exiting...",
3395 ndev->name, __func__, __LINE__);
3396
3397 return ret;
3398_out2:
3399 kfree(vdev->vpaths);
3400_out1:
3401 free_netdev(ndev);
3402_out0:
3403 return ret;
3404}
3405
3406/*
3407 * vxge_device_unregister
3408 *
3409 * This function will unregister and free network device
3410 */
3411void
3412vxge_device_unregister(struct __vxge_hw_device *hldev)
3413{
3414 struct vxgedev *vdev;
3415 struct net_device *dev;
3416 char buf[IFNAMSIZ];
3417#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3418 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3419 u32 level_trace;
3420#endif
3421
3422 dev = hldev->ndev;
3423 vdev = netdev_priv(dev);
3424#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3425 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3426 level_trace = vdev->level_trace;
3427#endif
3428 vxge_debug_entryexit(level_trace,
3429 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3430
3431 memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3432
3433 /* in 2.6 will call stop() if device is up */
3434 unregister_netdev(dev);
3435
3436 flush_scheduled_work();
3437
3438 vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3439 vxge_debug_entryexit(level_trace,
3440 "%s: %s:%d Exiting...", buf, __func__, __LINE__);
3441}
3442
3443/*
3444 * vxge_callback_crit_err
3445 *
3446 * This function is called by the alarm handler in interrupt context.
3447 * Driver must analyze it based on the event type.
3448 */
3449static void
3450vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3451 enum vxge_hw_event type, u64 vp_id)
3452{
3453 struct net_device *dev = hldev->ndev;
3454 struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3455 int vpath_idx;
3456
3457 vxge_debug_entryexit(vdev->level_trace,
3458 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3459
3460 /* Note: This event type should be used for device wide
3461 * indications only - Serious errors, Slot freeze and critical errors
3462 */
3463 vdev->cric_err_event = type;
3464
3465 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3466 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3467 break;
3468
3469 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3470 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3471 vxge_debug_init(VXGE_ERR,
3472 "%s: Slot is frozen", vdev->ndev->name);
3473 } else if (type == VXGE_HW_EVENT_SERR) {
3474 vxge_debug_init(VXGE_ERR,
3475 "%s: Encountered Serious Error",
3476 vdev->ndev->name);
3477 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3478 vxge_debug_init(VXGE_ERR,
3479 "%s: Encountered Critical Error",
3480 vdev->ndev->name);
3481 }
3482
3483 if ((type == VXGE_HW_EVENT_SERR) ||
3484 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3485 if (unlikely(vdev->exec_mode))
3486 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3487 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3488 vxge_hw_device_mask_all(hldev);
3489 if (unlikely(vdev->exec_mode))
3490 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3491 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3492 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3493
3494 if (unlikely(vdev->exec_mode))
3495 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3496 else {
3497 /* check if this vpath is already set for reset */
3498 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3499
3500 /* disable interrupts for this vpath */
3501 vxge_vpath_intr_disable(vdev, vpath_idx);
3502
3503 /* stop the queue for this vpath */
3504 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3505 fifo);
3506 }
3507 }
3508 }
3509
3510 vxge_debug_entryexit(vdev->level_trace,
3511 "%s: %s:%d Exiting...",
3512 vdev->ndev->name, __func__, __LINE__);
3513}
3514
3515static void verify_bandwidth(void)
3516{
3517 int i, band_width, total = 0, equal_priority = 0;
3518
3519 /* 1. If user enters 0 for some fifo, give equal priority to all */
3520 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3521 if (bw_percentage[i] == 0) {
3522 equal_priority = 1;
3523 break;
3524 }
3525 }
3526
3527 if (!equal_priority) {
3528 /* 2. If sum exceeds 100, give equal priority to all */
3529 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3530 if (bw_percentage[i] == 0xFF)
3531 break;
3532
3533 total += bw_percentage[i];
3534 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3535 equal_priority = 1;
3536 break;
3537 }
3538 }
3539 }
3540
3541 if (!equal_priority) {
3542 /* Is all the bandwidth consumed? */
3543 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3544 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3545 /* Split rest of bw equally among next VPs*/
3546 band_width =
3547 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3548 (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3549 if (band_width < 2) /* min of 2% */
3550 equal_priority = 1;
3551 else {
3552 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3553 i++)
3554 bw_percentage[i] =
3555 band_width;
3556 }
3557 }
3558 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3559 equal_priority = 1;
3560 }
3561
3562 if (equal_priority) {
3563 vxge_debug_init(VXGE_ERR,
3564 "%s: Assigning equal bandwidth to all the vpaths",
3565 VXGE_DRIVER_NAME);
3566 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3567 VXGE_HW_MAX_VIRTUAL_PATHS;
3568 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3569 bw_percentage[i] = bw_percentage[0];
3570 }
3571
3572 return;
3573}
3574
3575/*
3576 * Vpath configuration
3577 */
3578static int __devinit vxge_config_vpaths(
3579 struct vxge_hw_device_config *device_config,
3580 u64 vpath_mask, struct vxge_config *config_param)
3581{
3582 int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3583 u32 txdl_size, txdl_per_memblock;
3584
3585 temp = driver_config->vpath_per_dev;
3586 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3587 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3588 /* No more CPU. Return vpath number as zero.*/
3589 if (driver_config->g_no_cpus == -1)
3590 return 0;
3591
3592 if (!driver_config->g_no_cpus)
3593 driver_config->g_no_cpus = num_online_cpus();
3594
3595 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3596 if (!driver_config->vpath_per_dev)
3597 driver_config->vpath_per_dev = 1;
3598
3599 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3600 if (!vxge_bVALn(vpath_mask, i, 1))
3601 continue;
3602 else
3603 default_no_vpath++;
3604 if (default_no_vpath < driver_config->vpath_per_dev)
3605 driver_config->vpath_per_dev = default_no_vpath;
3606
3607 driver_config->g_no_cpus = driver_config->g_no_cpus -
3608 (driver_config->vpath_per_dev * 2);
3609 if (driver_config->g_no_cpus <= 0)
3610 driver_config->g_no_cpus = -1;
3611 }
3612
3613 if (driver_config->vpath_per_dev == 1) {
3614 vxge_debug_ll_config(VXGE_TRACE,
3615 "%s: Disable tx and rx steering, "
3616 "as single vpath is configured", VXGE_DRIVER_NAME);
3617 config_param->rth_steering = NO_STEERING;
3618 config_param->tx_steering_type = NO_STEERING;
3619 device_config->rth_en = 0;
3620 }
3621
3622 /* configure bandwidth */
3623 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3624 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3625
3626 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3627 device_config->vp_config[i].vp_id = i;
3628 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3629 if (no_of_vpaths < driver_config->vpath_per_dev) {
3630 if (!vxge_bVALn(vpath_mask, i, 1)) {
3631 vxge_debug_ll_config(VXGE_TRACE,
3632 "%s: vpath: %d is not available",
3633 VXGE_DRIVER_NAME, i);
3634 continue;
3635 } else {
3636 vxge_debug_ll_config(VXGE_TRACE,
3637 "%s: vpath: %d available",
3638 VXGE_DRIVER_NAME, i);
3639 no_of_vpaths++;
3640 }
3641 } else {
3642 vxge_debug_ll_config(VXGE_TRACE,
3643 "%s: vpath: %d is not configured, "
3644 "max_config_vpath exceeded",
3645 VXGE_DRIVER_NAME, i);
3646 break;
3647 }
3648
3649 /* Configure Tx fifo's */
3650 device_config->vp_config[i].fifo.enable =
3651 VXGE_HW_FIFO_ENABLE;
3652 device_config->vp_config[i].fifo.max_frags =
3653 MAX_SKB_FRAGS;
3654 device_config->vp_config[i].fifo.memblock_size =
3655 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3656
3657 txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
3658 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3659
3660 device_config->vp_config[i].fifo.fifo_blocks =
3661 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3662
3663 device_config->vp_config[i].fifo.intr =
3664 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3665
3666 /* Configure tti properties */
3667 device_config->vp_config[i].tti.intr_enable =
3668 VXGE_HW_TIM_INTR_ENABLE;
3669
3670 device_config->vp_config[i].tti.btimer_val =
3671 (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3672
3673 device_config->vp_config[i].tti.timer_ac_en =
3674 VXGE_HW_TIM_TIMER_AC_ENABLE;
3675
3676 /* For msi-x with napi (each vector
3677 has a handler of its own) -
3678 Set CI to OFF for all vpaths */
3679 device_config->vp_config[i].tti.timer_ci_en =
3680 VXGE_HW_TIM_TIMER_CI_DISABLE;
3681
3682 device_config->vp_config[i].tti.timer_ri_en =
3683 VXGE_HW_TIM_TIMER_RI_DISABLE;
3684
3685 device_config->vp_config[i].tti.util_sel =
3686 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3687
3688 device_config->vp_config[i].tti.ltimer_val =
3689 (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3690
3691 device_config->vp_config[i].tti.rtimer_val =
3692 (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3693
3694 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3695 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3696 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3697 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3698 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3699 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3700 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3701
3702 /* Configure Rx rings */
3703 device_config->vp_config[i].ring.enable =
3704 VXGE_HW_RING_ENABLE;
3705
3706 device_config->vp_config[i].ring.ring_blocks =
3707 VXGE_HW_DEF_RING_BLOCKS;
3708 device_config->vp_config[i].ring.buffer_mode =
3709 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3710 device_config->vp_config[i].ring.rxds_limit =
3711 VXGE_HW_DEF_RING_RXDS_LIMIT;
3712 device_config->vp_config[i].ring.scatter_mode =
3713 VXGE_HW_RING_SCATTER_MODE_A;
3714
3715 /* Configure rti properties */
3716 device_config->vp_config[i].rti.intr_enable =
3717 VXGE_HW_TIM_INTR_ENABLE;
3718
3719 device_config->vp_config[i].rti.btimer_val =
3720 (VXGE_RTI_BTIMER_VAL * 1000)/272;
3721
3722 device_config->vp_config[i].rti.timer_ac_en =
3723 VXGE_HW_TIM_TIMER_AC_ENABLE;
3724
3725 device_config->vp_config[i].rti.timer_ci_en =
3726 VXGE_HW_TIM_TIMER_CI_DISABLE;
3727
3728 device_config->vp_config[i].rti.timer_ri_en =
3729 VXGE_HW_TIM_TIMER_RI_DISABLE;
3730
3731 device_config->vp_config[i].rti.util_sel =
3732 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3733
3734 device_config->vp_config[i].rti.urange_a =
3735 RTI_RX_URANGE_A;
3736 device_config->vp_config[i].rti.urange_b =
3737 RTI_RX_URANGE_B;
3738 device_config->vp_config[i].rti.urange_c =
3739 RTI_RX_URANGE_C;
3740 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3741 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3742 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3743 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3744
3745 device_config->vp_config[i].rti.rtimer_val =
3746 (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3747
3748 device_config->vp_config[i].rti.ltimer_val =
3749 (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3750
3751 device_config->vp_config[i].rpa_strip_vlan_tag =
3752 vlan_tag_strip;
3753 }
3754
3755 driver_config->vpath_per_dev = temp;
3756 return no_of_vpaths;
3757}
3758
3759/* initialize device configuratrions */
3760static void __devinit vxge_device_config_init(
3761 struct vxge_hw_device_config *device_config,
3762 int *intr_type)
3763{
3764 /* Used for CQRQ/SRQ. */
3765 device_config->dma_blockpool_initial =
3766 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3767
3768 device_config->dma_blockpool_max =
3769 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3770
3771 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3772 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3773
3774#ifndef CONFIG_PCI_MSI
3775 vxge_debug_init(VXGE_ERR,
3776 "%s: This Kernel does not support "
3777 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3778 *intr_type = INTA;
3779#endif
3780
3781 /* Configure whether MSI-X or IRQL. */
3782 switch (*intr_type) {
3783 case INTA:
3784 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3785 break;
3786
3787 case MSI_X:
3788 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3789 break;
3790 }
3791 /* Timer period between device poll */
3792 device_config->device_poll_millis = VXGE_TIMER_DELAY;
3793
3794 /* Configure mac based steering. */
3795 device_config->rts_mac_en = addr_learn_en;
3796
3797 /* Configure Vpaths */
3798 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3799
3800 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3801 __func__);
3802 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3803 device_config->dma_blockpool_initial);
3804 vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3805 device_config->dma_blockpool_max);
3806 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3807 device_config->intr_mode);
3808 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3809 device_config->device_poll_millis);
3810 vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3811 device_config->rts_mac_en);
3812 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3813 device_config->rth_en);
3814 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3815 device_config->rth_it_type);
3816}
3817
3818static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3819{
3820 int i;
3821
3822 vxge_debug_init(VXGE_TRACE,
3823 "%s: %d Vpath(s) opened",
3824 vdev->ndev->name, vdev->no_of_vpath);
3825
3826 switch (vdev->config.intr_type) {
3827 case INTA:
3828 vxge_debug_init(VXGE_TRACE,
3829 "%s: Interrupt type INTA", vdev->ndev->name);
3830 break;
3831
3832 case MSI_X:
3833 vxge_debug_init(VXGE_TRACE,
3834 "%s: Interrupt type MSI-X", vdev->ndev->name);
3835 break;
3836 }
3837
3838 if (vdev->config.rth_steering) {
3839 vxge_debug_init(VXGE_TRACE,
3840 "%s: RTH steering enabled for TCP_IPV4",
3841 vdev->ndev->name);
3842 } else {
3843 vxge_debug_init(VXGE_TRACE,
3844 "%s: RTH steering disabled", vdev->ndev->name);
3845 }
3846
3847 switch (vdev->config.tx_steering_type) {
3848 case NO_STEERING:
3849 vxge_debug_init(VXGE_TRACE,
3850 "%s: Tx steering disabled", vdev->ndev->name);
3851 break;
3852 case TX_PRIORITY_STEERING:
3853 vxge_debug_init(VXGE_TRACE,
3854 "%s: Unsupported tx steering option",
3855 vdev->ndev->name);
3856 vxge_debug_init(VXGE_TRACE,
3857 "%s: Tx steering disabled", vdev->ndev->name);
3858 vdev->config.tx_steering_type = 0;
3859 break;
3860 case TX_VLAN_STEERING:
3861 vxge_debug_init(VXGE_TRACE,
3862 "%s: Unsupported tx steering option",
3863 vdev->ndev->name);
3864 vxge_debug_init(VXGE_TRACE,
3865 "%s: Tx steering disabled", vdev->ndev->name);
3866 vdev->config.tx_steering_type = 0;
3867 break;
3868 case TX_MULTIQ_STEERING:
3869 vxge_debug_init(VXGE_TRACE,
3870 "%s: Tx multiqueue steering enabled",
3871 vdev->ndev->name);
3872 break;
3873 case TX_PORT_STEERING:
3874 vxge_debug_init(VXGE_TRACE,
3875 "%s: Tx port steering enabled",
3876 vdev->ndev->name);
3877 break;
3878 default:
3879 vxge_debug_init(VXGE_ERR,
3880 "%s: Unsupported tx steering type",
3881 vdev->ndev->name);
3882 vxge_debug_init(VXGE_TRACE,
3883 "%s: Tx steering disabled", vdev->ndev->name);
3884 vdev->config.tx_steering_type = 0;
3885 }
3886
3887 if (vdev->config.gro_enable) {
3888 vxge_debug_init(VXGE_ERR,
3889 "%s: Generic receive offload enabled",
3890 vdev->ndev->name);
3891 } else
3892 vxge_debug_init(VXGE_TRACE,
3893 "%s: Generic receive offload disabled",
3894 vdev->ndev->name);
3895
3896 if (vdev->config.addr_learn_en)
3897 vxge_debug_init(VXGE_TRACE,
3898 "%s: MAC Address learning enabled", vdev->ndev->name);
3899
3900 vxge_debug_init(VXGE_TRACE,
3901 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3902
3903 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3904 if (!vxge_bVALn(vpath_mask, i, 1))
3905 continue;
3906 vxge_debug_ll_config(VXGE_TRACE,
3907 "%s: MTU size - %d", vdev->ndev->name,
3908 ((struct __vxge_hw_device *)(vdev->devh))->
3909 config.vp_config[i].mtu);
3910 vxge_debug_init(VXGE_TRACE,
3911 "%s: VLAN tag stripping %s", vdev->ndev->name,
3912 ((struct __vxge_hw_device *)(vdev->devh))->
3913 config.vp_config[i].rpa_strip_vlan_tag
3914 ? "Enabled" : "Disabled");
3915 vxge_debug_init(VXGE_TRACE,
3916 "%s: Ring blocks : %d", vdev->ndev->name,
3917 ((struct __vxge_hw_device *)(vdev->devh))->
3918 config.vp_config[i].ring.ring_blocks);
3919 vxge_debug_init(VXGE_TRACE,
3920 "%s: Fifo blocks : %d", vdev->ndev->name,
3921 ((struct __vxge_hw_device *)(vdev->devh))->
3922 config.vp_config[i].fifo.fifo_blocks);
3923 vxge_debug_ll_config(VXGE_TRACE,
3924 "%s: Max frags : %d", vdev->ndev->name,
3925 ((struct __vxge_hw_device *)(vdev->devh))->
3926 config.vp_config[i].fifo.max_frags);
3927 break;
3928 }
3929}
3930
3931#ifdef CONFIG_PM
3932/**
3933 * vxge_pm_suspend - vxge power management suspend entry point
3934 *
3935 */
3936static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3937{
3938 return -ENOSYS;
3939}
3940/**
3941 * vxge_pm_resume - vxge power management resume entry point
3942 *
3943 */
3944static int vxge_pm_resume(struct pci_dev *pdev)
3945{
3946 return -ENOSYS;
3947}
3948
3949#endif
3950
3951/**
3952 * vxge_io_error_detected - called when PCI error is detected
3953 * @pdev: Pointer to PCI device
3954 * @state: The current pci connection state
3955 *
3956 * This function is called after a PCI bus error affecting
3957 * this device has been detected.
3958 */
3959static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3960 pci_channel_state_t state)
3961{
3962 struct __vxge_hw_device *hldev =
3963 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3964 struct net_device *netdev = hldev->ndev;
3965
3966 netif_device_detach(netdev);
3967
e33b992d
DN		 3968 if (state == pci_channel_io_perm_failure)
3969 return PCI_ERS_RESULT_DISCONNECT;
3970
703da5a1
RV		 3971 if (netif_running(netdev)) {
3972 /* Bring down the card, while avoiding PCI I/O */
3973 do_vxge_close(netdev, 0);
3974 }
3975
3976 pci_disable_device(pdev);
3977
3978 return PCI_ERS_RESULT_NEED_RESET;
3979}
3980
3981/**
3982 * vxge_io_slot_reset - called after the pci bus has been reset.
3983 * @pdev: Pointer to PCI device
3984 *
3985 * Restart the card from scratch, as if from a cold-boot.
3986 * At this point, the card has exprienced a hard reset,
3987 * followed by fixups by BIOS, and has its config space
3988 * set up identically to what it was at cold boot.
3989 */
3990static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3991{
3992 struct __vxge_hw_device *hldev =
3993 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
3994 struct net_device *netdev = hldev->ndev;
3995
3996 struct vxgedev *vdev = netdev_priv(netdev);
3997
3998 if (pci_enable_device(pdev)) {
3999 printk(KERN_ERR "%s: "
4000 "Cannot re-enable device after reset\n",
4001 VXGE_DRIVER_NAME);
4002 return PCI_ERS_RESULT_DISCONNECT;
4003 }
4004
4005 pci_set_master(pdev);
4006 vxge_reset(vdev);
4007
4008 return PCI_ERS_RESULT_RECOVERED;
4009}
4010
4011/**
4012 * vxge_io_resume - called when traffic can start flowing again.
4013 * @pdev: Pointer to PCI device
4014 *
4015 * This callback is called when the error recovery driver tells
4016 * us that its OK to resume normal operation.
4017 */
4018static void vxge_io_resume(struct pci_dev *pdev)
4019{
4020 struct __vxge_hw_device *hldev =
4021 (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4022 struct net_device *netdev = hldev->ndev;
4023
4024 if (netif_running(netdev)) {
4025 if (vxge_open(netdev)) {
4026 printk(KERN_ERR "%s: "
4027 "Can't bring device back up after reset\n",
4028 VXGE_DRIVER_NAME);
4029 return;
4030 }
4031 }
4032
4033 netif_device_attach(netdev);
4034}
4035
4036/**
4037 * vxge_probe
4038 * @pdev : structure containing the PCI related information of the device.
4039 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4040 * Description:
4041 * This function is called when a new PCI device gets detected and initializes
4042 * it.
4043 * Return value:
4044 * returns 0 on success and negative on failure.
4045 *
4046 */
4047static int __devinit
4048vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4049{
4050 struct __vxge_hw_device *hldev;
4051 enum vxge_hw_status status;
4052 int ret;
4053 int high_dma = 0;
4054 u64 vpath_mask = 0;
4055 struct vxgedev *vdev;
4056 struct vxge_config ll_config;
4057 struct vxge_hw_device_config *device_config = NULL;
4058 struct vxge_hw_device_attr attr;
4059 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4060 u8 *macaddr;
4061 struct vxge_mac_addrs *entry;
4062 static int bus = -1, device = -1;
4063 u8 new_device = 0;
4064
4065 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4066 attr.pdev = pdev;
4067
4068 if (bus != pdev->bus->number)
4069 new_device = 1;
4070 if (device != PCI_SLOT(pdev->devfn))
4071 new_device = 1;
4072
4073 bus = pdev->bus->number;
4074 device = PCI_SLOT(pdev->devfn);
4075
4076 if (new_device) {
4077 if (driver_config->config_dev_cnt &&
4078 (driver_config->config_dev_cnt !=
4079 driver_config->total_dev_cnt))
4080 vxge_debug_init(VXGE_ERR,
4081 "%s: Configured %d of %d devices",
4082 VXGE_DRIVER_NAME,
4083 driver_config->config_dev_cnt,
4084 driver_config->total_dev_cnt);
4085 driver_config->config_dev_cnt = 0;
4086 driver_config->total_dev_cnt = 0;
4087 driver_config->g_no_cpus = 0;
4088 driver_config->vpath_per_dev = max_config_vpath;
4089 }
4090
4091 driver_config->total_dev_cnt++;
4092 if (++driver_config->config_dev_cnt > max_config_dev) {
4093 ret = 0;
4094 goto _exit0;
4095 }
4096
4097 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4098 GFP_KERNEL);
4099 if (!device_config) {
4100 ret = -ENOMEM;
4101 vxge_debug_init(VXGE_ERR,
4102 "device_config : malloc failed %s %d",
4103 __FILE__, __LINE__);
4104 goto _exit0;
4105 }
4106
4107 memset(&ll_config, 0, sizeof(struct vxge_config));
4108 ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4109 ll_config.intr_type = MSI_X;
4110 ll_config.napi_weight = NEW_NAPI_WEIGHT;
4111 ll_config.rth_steering = RTH_STEERING;
4112
4113 /* get the default configuration parameters */
4114 vxge_hw_device_config_default_get(device_config);
4115
4116 /* initialize configuration parameters */
4117 vxge_device_config_init(device_config, &ll_config.intr_type);
4118
4119 ret = pci_enable_device(pdev);
4120 if (ret) {
4121 vxge_debug_init(VXGE_ERR,
4122 "%s : can not enable PCI device", __func__);
4123 goto _exit0;
4124 }
4125
4126 if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
4127 vxge_debug_ll_config(VXGE_TRACE,
4128 "%s : using 64bit DMA", __func__);
4129
4130 high_dma = 1;
4131
4132 if (pci_set_consistent_dma_mask(pdev,
4133 0xffffffffffffffffULL)) {
4134 vxge_debug_init(VXGE_ERR,
4135 "%s : unable to obtain 64bit DMA for "
4136 "consistent allocations", __func__);
4137 ret = -ENOMEM;
4138 goto _exit1;
4139 }
4140 } else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
4141 vxge_debug_ll_config(VXGE_TRACE,
4142 "%s : using 32bit DMA", __func__);
4143 } else {
4144 ret = -ENOMEM;
4145 goto _exit1;
4146 }
4147
4148 if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4149 vxge_debug_init(VXGE_ERR,
4150 "%s : request regions failed", __func__);
4151 ret = -ENODEV;
4152 goto _exit1;
4153 }
4154
4155 pci_set_master(pdev);
4156
4157 attr.bar0 = pci_ioremap_bar(pdev, 0);
4158 if (!attr.bar0) {
4159 vxge_debug_init(VXGE_ERR,
4160 "%s : cannot remap io memory bar0", __func__);
4161 ret = -ENODEV;
4162 goto _exit2;
4163 }
4164 vxge_debug_ll_config(VXGE_TRACE,
4165 "pci ioremap bar0: %p:0x%llx",
4166 attr.bar0,
4167 (unsigned long long)pci_resource_start(pdev, 0));
4168
703da5a1
RV		 4169 status = vxge_hw_device_hw_info_get(attr.bar0,
4170 &ll_config.device_hw_info);
4171 if (status != VXGE_HW_OK) {
4172 vxge_debug_init(VXGE_ERR,
4173 "%s: Reading of hardware info failed."
4174 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4175 ret = -EINVAL;
7975d1ee 4176 goto _exit3;
703da5a1
RV		 4177 }
4178
4179 if (ll_config.device_hw_info.fw_version.major !=
22fa125e 4180 VXGE_DRIVER_FW_VERSION_MAJOR) {
703da5a1 4181 vxge_debug_init(VXGE_ERR,
22fa125e
SH		 4182 "%s: Incorrect firmware version."
4183 "Please upgrade the firmware to version 1.x.x",
4184 VXGE_DRIVER_NAME);
703da5a1 4185 ret = -EINVAL;
7975d1ee 4186 goto _exit3;
703da5a1
RV		 4187 }
4188
4189 vpath_mask = ll_config.device_hw_info.vpath_mask;
4190 if (vpath_mask == 0) {
4191 vxge_debug_ll_config(VXGE_TRACE,
4192 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4193 ret = -EINVAL;
7975d1ee 4194 goto _exit3;
703da5a1
RV		 4195 }
4196
4197 vxge_debug_ll_config(VXGE_TRACE,
4198 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4199 (unsigned long long)vpath_mask);
4200
4201 /* Check how many vpaths are available */
4202 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4203 if (!((vpath_mask) & vxge_mBIT(i)))
4204 continue;
4205 max_vpath_supported++;
4206 }
4207
5dbc9011
SS		 4208 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4209 if ((VXGE_HW_FUNCTION_MODE_SRIOV ==
4210 ll_config.device_hw_info.function_mode) &&
4211 (max_config_dev > 1) && (pdev->is_physfn)) {
4212 ret = pci_enable_sriov(pdev, max_config_dev - 1);
4213 if (ret)
4214 vxge_debug_ll_config(VXGE_ERR,
4215 "Failed to enable SRIOV: %d \n", ret);
4216 }
4217
703da5a1
RV		 4218 /*
4219 * Configure vpaths and get driver configured number of vpaths
4220 * which is less than or equal to the maximum vpaths per function.
4221 */
4222 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4223 if (!no_of_vpath) {
4224 vxge_debug_ll_config(VXGE_ERR,
4225 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4226 ret = 0;
7975d1ee 4227 goto _exit3;
703da5a1
RV		 4228 }
4229
4230 /* Setting driver callbacks */
4231 attr.uld_callbacks.link_up = vxge_callback_link_up;
4232 attr.uld_callbacks.link_down = vxge_callback_link_down;
4233 attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4234
4235 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4236 if (status != VXGE_HW_OK) {
4237 vxge_debug_init(VXGE_ERR,
4238 "Failed to initialize device (%d)", status);
4239 ret = -EINVAL;
7975d1ee 4240 goto _exit3;
703da5a1
RV		 4241 }
4242
4243 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4244
4245 /* set private device info */
4246 pci_set_drvdata(pdev, hldev);
4247
4248 ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4249 ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4250 ll_config.addr_learn_en = addr_learn_en;
4251 ll_config.rth_algorithm = RTH_ALG_JENKINS;
4252 ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4253 ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4254 ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4255 ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4256 ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4257 ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4258 ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4259 ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4260 ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4261
4262 if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4263 &vdev)) {
4264 ret = -EINVAL;
7975d1ee 4265 goto _exit4;
703da5a1
RV		 4266 }
4267
4268 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4269 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4270 vxge_hw_device_trace_level_get(hldev));
4271
4272 /* set private HW device info */
4273 hldev->ndev = vdev->ndev;
4274 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4275 vdev->bar0 = attr.bar0;
703da5a1
RV		 4276 vdev->max_vpath_supported = max_vpath_supported;
4277 vdev->no_of_vpath = no_of_vpath;
4278
4279 /* Virtual Path count */
4280 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4281 if (!vxge_bVALn(vpath_mask, i, 1))
4282 continue;
4283 if (j >= vdev->no_of_vpath)
4284 break;
4285
4286 vdev->vpaths[j].is_configured = 1;
4287 vdev->vpaths[j].device_id = i;
4288 vdev->vpaths[j].fifo.driver_id = j;
4289 vdev->vpaths[j].ring.driver_id = j;
4290 vdev->vpaths[j].vdev = vdev;
4291 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4292 memcpy((u8 *)vdev->vpaths[j].macaddr,
4293 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4294 ETH_ALEN);
4295
4296 /* Initialize the mac address list header */
4297 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4298
4299 vdev->vpaths[j].mac_addr_cnt = 0;
4300 vdev->vpaths[j].mcast_addr_cnt = 0;
4301 j++;
4302 }
4303 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4304 vdev->max_config_port = max_config_port;
4305
4306 vdev->vlan_tag_strip = vlan_tag_strip;
4307
4308 /* map the hashing selector table to the configured vpaths */
4309 for (i = 0; i < vdev->no_of_vpath; i++)
4310 vdev->vpath_selector[i] = vpath_selector[i];
4311
4312 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4313
4314 ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4315 ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4316 ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4317
4318 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4319 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4320
4321 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4322 vdev->ndev->name, ll_config.device_hw_info.part_number);
4323
4324 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4325 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4326
4327 vxge_debug_init(VXGE_TRACE,
4328 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4329 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4330 macaddr[3], macaddr[4], macaddr[5]);
4331
4332 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4333 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4334
4335 vxge_debug_init(VXGE_TRACE,
4336 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4337 ll_config.device_hw_info.fw_version.version,
4338 ll_config.device_hw_info.fw_date.date);
4339
0a25bdc6
SH		 4340 if (new_device) {
4341 switch (ll_config.device_hw_info.function_mode) {
4342 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4343 vxge_debug_init(VXGE_TRACE,
4344 "%s: Single Function Mode Enabled", vdev->ndev->name);
4345 break;
4346 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4347 vxge_debug_init(VXGE_TRACE,
4348 "%s: Multi Function Mode Enabled", vdev->ndev->name);
4349 break;
4350 case VXGE_HW_FUNCTION_MODE_SRIOV:
4351 vxge_debug_init(VXGE_TRACE,
4352 "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4353 break;
4354 case VXGE_HW_FUNCTION_MODE_MRIOV:
4355 vxge_debug_init(VXGE_TRACE,
4356 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4357 break;
4358 }
4359 }
4360
703da5a1
RV		 4361 vxge_print_parm(vdev, vpath_mask);
4362
4363 /* Store the fw version for ethttool option */
4364 strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4365 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4366 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4367
4368 /* Copy the station mac address to the list */
4369 for (i = 0; i < vdev->no_of_vpath; i++) {
4370 entry = (struct vxge_mac_addrs *)
4371 kzalloc(sizeof(struct vxge_mac_addrs),
4372 GFP_KERNEL);
4373 if (NULL == entry) {
4374 vxge_debug_init(VXGE_ERR,
4375 "%s: mac_addr_list : memory allocation failed",
4376 vdev->ndev->name);
4377 ret = -EPERM;
7975d1ee 4378 goto _exit5;
703da5a1
RV		 4379 }
4380 macaddr = (u8 *)&entry->macaddr;
4381 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4382 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4383 vdev->vpaths[i].mac_addr_cnt = 1;
4384 }
4385
914d0d71 4386 kfree(device_config);
703da5a1
RV		 4387 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4388 vdev->ndev->name, __func__, __LINE__);
4389
4390 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4391 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4392 vxge_hw_device_trace_level_get(hldev));
4393
4394 return 0;
4395
7975d1ee 4396_exit5:
703da5a1
RV		 4397 for (i = 0; i < vdev->no_of_vpath; i++)
4398 vxge_free_mac_add_list(&vdev->vpaths[i]);
4399
4400 vxge_device_unregister(hldev);
7975d1ee 4401_exit4:
5dbc9011 4402 pci_disable_sriov(pdev);
703da5a1 4403 vxge_hw_device_terminate(hldev);
703da5a1
RV		 4404_exit3:
4405 iounmap(attr.bar0);
4406_exit2:
4407 pci_release_regions(pdev);
4408_exit1:
4409 pci_disable_device(pdev);
4410_exit0:
4411 kfree(device_config);
4412 driver_config->config_dev_cnt--;
4413 pci_set_drvdata(pdev, NULL);
4414 return ret;
4415}
4416
4417/**
4418 * vxge_rem_nic - Free the PCI device
4419 * @pdev: structure containing the PCI related information of the device.
4420 * Description: This function is called by the Pci subsystem to release a
4421 * PCI device and free up all resource held up by the device.
4422 */
4423static void __devexit
4424vxge_remove(struct pci_dev *pdev)
4425{
4426 struct __vxge_hw_device *hldev;
4427 struct vxgedev *vdev = NULL;
4428 struct net_device *dev;
4429 int i = 0;
4430#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4431 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4432 u32 level_trace;
4433#endif
4434
4435 hldev = (struct __vxge_hw_device *) pci_get_drvdata(pdev);
4436
4437 if (hldev == NULL)
4438 return;
4439 dev = hldev->ndev;
4440 vdev = netdev_priv(dev);
4441
4442#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4443 (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4444 level_trace = vdev->level_trace;
4445#endif
4446 vxge_debug_entryexit(level_trace,
4447 "%s:%d", __func__, __LINE__);
4448
4449 vxge_debug_init(level_trace,
4450 "%s : removing PCI device...", __func__);
4451 vxge_device_unregister(hldev);
4452
4453 for (i = 0; i < vdev->no_of_vpath; i++) {
4454 vxge_free_mac_add_list(&vdev->vpaths[i]);
4455 vdev->vpaths[i].mcast_addr_cnt = 0;
4456 vdev->vpaths[i].mac_addr_cnt = 0;
4457 }
4458
4459 kfree(vdev->vpaths);
4460
4461 iounmap(vdev->bar0);
703da5a1 4462
5dbc9011
SS		 4463 pci_disable_sriov(pdev);
4464
703da5a1
RV		 4465 /* we are safe to free it now */
4466 free_netdev(dev);
4467
4468 vxge_debug_init(level_trace,
4469 "%s:%d Device unregistered", __func__, __LINE__);
4470
4471 vxge_hw_device_terminate(hldev);
4472
4473 pci_disable_device(pdev);
4474 pci_release_regions(pdev);
4475 pci_set_drvdata(pdev, NULL);
4476 vxge_debug_entryexit(level_trace,
4477 "%s:%d Exiting...", __func__, __LINE__);
4478}
4479
4480static struct pci_error_handlers vxge_err_handler = {
4481 .error_detected = vxge_io_error_detected,
4482 .slot_reset = vxge_io_slot_reset,
4483 .resume = vxge_io_resume,
4484};
4485
4486static struct pci_driver vxge_driver = {
4487 .name = VXGE_DRIVER_NAME,
4488 .id_table = vxge_id_table,
4489 .probe = vxge_probe,
4490 .remove = __devexit_p(vxge_remove),
4491#ifdef CONFIG_PM
4492 .suspend = vxge_pm_suspend,
4493 .resume = vxge_pm_resume,
4494#endif
4495 .err_handler = &vxge_err_handler,
4496};
4497
4498static int __init
4499vxge_starter(void)
4500{
4501 int ret = 0;
4502 char version[32];
4503 snprintf(version, 32, "%s", DRV_VERSION);
4504
4505 printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4506 VXGE_DRIVER_NAME);
4507 printk(KERN_CRIT "%s: Driver version: %s\n",
4508 VXGE_DRIVER_NAME, version);
4509
4510 verify_bandwidth();
4511
4512 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4513 if (!driver_config)
4514 return -ENOMEM;
4515
4516 ret = pci_register_driver(&vxge_driver);
4517
4518 if (driver_config->config_dev_cnt &&
4519 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4520 vxge_debug_init(VXGE_ERR,
4521 "%s: Configured %d of %d devices",
4522 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4523 driver_config->total_dev_cnt);
4524
4525 if (ret)
4526 kfree(driver_config);
4527
4528 return ret;
4529}
4530
4531static void __exit
4532vxge_closer(void)
4533{
4534 pci_unregister_driver(&vxge_driver);
4535 kfree(driver_config);
4536}
4537module_init(vxge_starter);
4538module_exit(vxge_closer);
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