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vxge: transmit timeout deadlock
[pohmelfs.git] / drivers / net / vxge / vxge-main.c
blob3ec80684cd5fcd3752f8a712ff7bac40546be655
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 Exar Corp's X3100 Series 10GbE PCIe I/O
11 * Virtualized Server Adapter.
12 * Copyright(c) 2002-2010 Exar Corp.
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
45
46 #include <linux/if_vlan.h>
47 #include <linux/pci.h>
48 #include <linux/slab.h>
49 #include <linux/tcp.h>
50 #include <net/ip.h>
51 #include <linux/netdevice.h>
52 #include <linux/etherdevice.h>
53 #include <linux/firmware.h>
54 #include <linux/net_tstamp.h>
55 #include "vxge-main.h"
56 #include "vxge-reg.h"
57
58 MODULE_LICENSE("Dual BSD/GPL");
59 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
60 "Virtualized Server Adapter");
61
62 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
63 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
64 PCI_ANY_ID},
65 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
66 PCI_ANY_ID},
67 {0}
68 };
69
70 MODULE_DEVICE_TABLE(pci, vxge_id_table);
71
72 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
73 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
74 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
75 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
76 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
77 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
78
79 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
80 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
81 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
82 {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
83 module_param_array(bw_percentage, uint, NULL, 0);
84
85 static struct vxge_drv_config *driver_config;
86
87 static inline int is_vxge_card_up(struct vxgedev *vdev)
88 {
89 return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
90 }
91
92 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
93 {
94 struct sk_buff **skb_ptr = NULL;
95 struct sk_buff **temp;
96 #define NR_SKB_COMPLETED 128
97 struct sk_buff *completed[NR_SKB_COMPLETED];
98 int more;
99
100 do {
101 more = 0;
102 skb_ptr = completed;
103
104 if (__netif_tx_trylock(fifo->txq)) {
105 vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
106 NR_SKB_COMPLETED, &more);
107 __netif_tx_unlock(fifo->txq);
108 }
109
110 /* free SKBs */
111 for (temp = completed; temp != skb_ptr; temp++)
112 dev_kfree_skb_irq(*temp);
113 } while (more);
114 }
115
116 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
117 {
118 int i;
119
120 /* Complete all transmits */
121 for (i = 0; i < vdev->no_of_vpath; i++)
122 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
123 }
124
125 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
126 {
127 int i;
128 struct vxge_ring *ring;
129
130 /* Complete all receives*/
131 for (i = 0; i < vdev->no_of_vpath; i++) {
132 ring = &vdev->vpaths[i].ring;
133 vxge_hw_vpath_poll_rx(ring->handle);
134 }
135 }
136
137 /*
138 * vxge_callback_link_up
139 *
140 * This function is called during interrupt context to notify link up state
141 * change.
142 */
143 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
144 {
145 struct net_device *dev = hldev->ndev;
146 struct vxgedev *vdev = netdev_priv(dev);
147
148 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
149 vdev->ndev->name, __func__, __LINE__);
150 netdev_notice(vdev->ndev, "Link Up\n");
151 vdev->stats.link_up++;
152
153 netif_carrier_on(vdev->ndev);
154 netif_tx_wake_all_queues(vdev->ndev);
155
156 vxge_debug_entryexit(VXGE_TRACE,
157 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
158 }
159
160 /*
161 * vxge_callback_link_down
162 *
163 * This function is called during interrupt context to notify link down state
164 * change.
165 */
166 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
167 {
168 struct net_device *dev = hldev->ndev;
169 struct vxgedev *vdev = netdev_priv(dev);
170
171 vxge_debug_entryexit(VXGE_TRACE,
172 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
173 netdev_notice(vdev->ndev, "Link Down\n");
174
175 vdev->stats.link_down++;
176 netif_carrier_off(vdev->ndev);
177 netif_tx_stop_all_queues(vdev->ndev);
178
179 vxge_debug_entryexit(VXGE_TRACE,
180 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
181 }
182
183 /*
184 * vxge_rx_alloc
185 *
186 * Allocate SKB.
187 */
188 static struct sk_buff *
189 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
190 {
191 struct net_device *dev;
192 struct sk_buff *skb;
193 struct vxge_rx_priv *rx_priv;
194
195 dev = ring->ndev;
196 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
197 ring->ndev->name, __func__, __LINE__);
198
199 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
200
201 /* try to allocate skb first. this one may fail */
202 skb = netdev_alloc_skb(dev, skb_size +
203 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
204 if (skb == NULL) {
205 vxge_debug_mem(VXGE_ERR,
206 "%s: out of memory to allocate SKB", dev->name);
207 ring->stats.skb_alloc_fail++;
208 return NULL;
209 }
210
211 vxge_debug_mem(VXGE_TRACE,
212 "%s: %s:%d Skb : 0x%p", ring->ndev->name,
213 __func__, __LINE__, skb);
214
215 skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
216
217 rx_priv->skb = skb;
218 rx_priv->skb_data = NULL;
219 rx_priv->data_size = skb_size;
220 vxge_debug_entryexit(VXGE_TRACE,
221 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
222
223 return skb;
224 }
225
226 /*
227 * vxge_rx_map
228 */
229 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
230 {
231 struct vxge_rx_priv *rx_priv;
232 dma_addr_t dma_addr;
233
234 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
235 ring->ndev->name, __func__, __LINE__);
236 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
237
238 rx_priv->skb_data = rx_priv->skb->data;
239 dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
240 rx_priv->data_size, PCI_DMA_FROMDEVICE);
241
242 if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
243 ring->stats.pci_map_fail++;
244 return -EIO;
245 }
246 vxge_debug_mem(VXGE_TRACE,
247 "%s: %s:%d 1 buffer mode dma_addr = 0x%llx",
248 ring->ndev->name, __func__, __LINE__,
249 (unsigned long long)dma_addr);
250 vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
251
252 rx_priv->data_dma = dma_addr;
253 vxge_debug_entryexit(VXGE_TRACE,
254 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
255
256 return 0;
257 }
258
259 /*
260 * vxge_rx_initial_replenish
261 * Allocation of RxD as an initial replenish procedure.
262 */
263 static enum vxge_hw_status
264 vxge_rx_initial_replenish(void *dtrh, void *userdata)
265 {
266 struct vxge_ring *ring = (struct vxge_ring *)userdata;
267 struct vxge_rx_priv *rx_priv;
268
269 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
270 ring->ndev->name, __func__, __LINE__);
271 if (vxge_rx_alloc(dtrh, ring,
272 VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
273 return VXGE_HW_FAIL;
274
275 if (vxge_rx_map(dtrh, ring)) {
276 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
277 dev_kfree_skb(rx_priv->skb);
278
279 return VXGE_HW_FAIL;
280 }
281 vxge_debug_entryexit(VXGE_TRACE,
282 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
283
284 return VXGE_HW_OK;
285 }
286
287 static inline void
288 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
289 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
290 {
291
292 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
293 ring->ndev->name, __func__, __LINE__);
294 skb_record_rx_queue(skb, ring->driver_id);
295 skb->protocol = eth_type_trans(skb, ring->ndev);
296
297 ring->stats.rx_frms++;
298 ring->stats.rx_bytes += pkt_length;
299
300 if (skb->pkt_type == PACKET_MULTICAST)
301 ring->stats.rx_mcast++;
302
303 vxge_debug_rx(VXGE_TRACE,
304 "%s: %s:%d skb protocol = %d",
305 ring->ndev->name, __func__, __LINE__, skb->protocol);
306
307 if (ring->gro_enable) {
308 if (ring->vlgrp && ext_info->vlan &&
309 (ring->vlan_tag_strip ==
310 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
311 vlan_gro_receive(ring->napi_p, ring->vlgrp,
312 ext_info->vlan, skb);
313 else
314 napi_gro_receive(ring->napi_p, skb);
315 } else {
316 if (ring->vlgrp && vlan &&
317 (ring->vlan_tag_strip ==
318 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
319 vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
320 else
321 netif_receive_skb(skb);
322 }
323 vxge_debug_entryexit(VXGE_TRACE,
324 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
325 }
326
327 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
328 struct vxge_rx_priv *rx_priv)
329 {
330 pci_dma_sync_single_for_device(ring->pdev,
331 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
332
333 vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
334 vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
335 }
336
337 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
338 void *post_dtr, struct __vxge_hw_ring *ringh)
339 {
340 int dtr_count = *dtr_cnt;
341 if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
342 if (*first_dtr)
343 vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
344 *first_dtr = post_dtr;
345 } else
346 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
347 dtr_count++;
348 *dtr_cnt = dtr_count;
349 }
350
351 /*
352 * vxge_rx_1b_compl
353 *
354 * If the interrupt is because of a received frame or if the receive ring
355 * contains fresh as yet un-processed frames, this function is called.
356 */
357 static enum vxge_hw_status
358 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
359 u8 t_code, void *userdata)
360 {
361 struct vxge_ring *ring = (struct vxge_ring *)userdata;
362 struct net_device *dev = ring->ndev;
363 unsigned int dma_sizes;
364 void *first_dtr = NULL;
365 int dtr_cnt = 0;
366 int data_size;
367 dma_addr_t data_dma;
368 int pkt_length;
369 struct sk_buff *skb;
370 struct vxge_rx_priv *rx_priv;
371 struct vxge_hw_ring_rxd_info ext_info;
372 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
373 ring->ndev->name, __func__, __LINE__);
374 ring->pkts_processed = 0;
375
376 vxge_hw_ring_replenish(ringh);
377
378 do {
379 prefetch((char *)dtr + L1_CACHE_BYTES);
380 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
381 skb = rx_priv->skb;
382 data_size = rx_priv->data_size;
383 data_dma = rx_priv->data_dma;
384 prefetch(rx_priv->skb_data);
385
386 vxge_debug_rx(VXGE_TRACE,
387 "%s: %s:%d skb = 0x%p",
388 ring->ndev->name, __func__, __LINE__, skb);
389
390 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
391 pkt_length = dma_sizes;
392
393 pkt_length -= ETH_FCS_LEN;
394
395 vxge_debug_rx(VXGE_TRACE,
396 "%s: %s:%d Packet Length = %d",
397 ring->ndev->name, __func__, __LINE__, pkt_length);
398
399 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
400
401 /* check skb validity */
402 vxge_assert(skb);
403
404 prefetch((char *)skb + L1_CACHE_BYTES);
405 if (unlikely(t_code)) {
406 if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
407 VXGE_HW_OK) {
408
409 ring->stats.rx_errors++;
410 vxge_debug_rx(VXGE_TRACE,
411 "%s: %s :%d Rx T_code is %d",
412 ring->ndev->name, __func__,
413 __LINE__, t_code);
414
415 /* If the t_code is not supported and if the
416 * t_code is other than 0x5 (unparseable packet
417 * such as unknown UPV6 header), Drop it !!!
418 */
419 vxge_re_pre_post(dtr, ring, rx_priv);
420
421 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
422 ring->stats.rx_dropped++;
423 continue;
424 }
425 }
426
427 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
428 if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
429 if (!vxge_rx_map(dtr, ring)) {
430 skb_put(skb, pkt_length);
431
432 pci_unmap_single(ring->pdev, data_dma,
433 data_size, PCI_DMA_FROMDEVICE);
434
435 vxge_hw_ring_rxd_pre_post(ringh, dtr);
436 vxge_post(&dtr_cnt, &first_dtr, dtr,
437 ringh);
438 } else {
439 dev_kfree_skb(rx_priv->skb);
440 rx_priv->skb = skb;
441 rx_priv->data_size = data_size;
442 vxge_re_pre_post(dtr, ring, rx_priv);
443
444 vxge_post(&dtr_cnt, &first_dtr, dtr,
445 ringh);
446 ring->stats.rx_dropped++;
447 break;
448 }
449 } else {
450 vxge_re_pre_post(dtr, ring, rx_priv);
451
452 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
453 ring->stats.rx_dropped++;
454 break;
455 }
456 } else {
457 struct sk_buff *skb_up;
458
459 skb_up = netdev_alloc_skb(dev, pkt_length +
460 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
461 if (skb_up != NULL) {
462 skb_reserve(skb_up,
463 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
464
465 pci_dma_sync_single_for_cpu(ring->pdev,
466 data_dma, data_size,
467 PCI_DMA_FROMDEVICE);
468
469 vxge_debug_mem(VXGE_TRACE,
470 "%s: %s:%d skb_up = %p",
471 ring->ndev->name, __func__,
472 __LINE__, skb);
473 memcpy(skb_up->data, skb->data, pkt_length);
474
475 vxge_re_pre_post(dtr, ring, rx_priv);
476
477 vxge_post(&dtr_cnt, &first_dtr, dtr,
478 ringh);
479 /* will netif_rx small SKB instead */
480 skb = skb_up;
481 skb_put(skb, pkt_length);
482 } else {
483 vxge_re_pre_post(dtr, ring, rx_priv);
484
485 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
486 vxge_debug_rx(VXGE_ERR,
487 "%s: vxge_rx_1b_compl: out of "
488 "memory", dev->name);
489 ring->stats.skb_alloc_fail++;
490 break;
491 }
492 }
493
494 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
495 !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
496 ring->rx_csum && /* Offload Rx side CSUM */
497 ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
498 ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
499 skb->ip_summed = CHECKSUM_UNNECESSARY;
500 else
501 skb_checksum_none_assert(skb);
502
503
504 if (ring->rx_hwts) {
505 struct skb_shared_hwtstamps *skb_hwts;
506 u32 ns = *(u32 *)(skb->head + pkt_length);
507
508 skb_hwts = skb_hwtstamps(skb);
509 skb_hwts->hwtstamp = ns_to_ktime(ns);
510 skb_hwts->syststamp.tv64 = 0;
511 }
512
513 /* rth_hash_type and rth_it_hit are non-zero regardless of
514 * whether rss is enabled. Only the rth_value is zero/non-zero
515 * if rss is disabled/enabled, so key off of that.
516 */
517 if (ext_info.rth_value)
518 skb->rxhash = ext_info.rth_value;
519
520 vxge_rx_complete(ring, skb, ext_info.vlan,
521 pkt_length, &ext_info);
522
523 ring->budget--;
524 ring->pkts_processed++;
525 if (!ring->budget)
526 break;
527
528 } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
529 &t_code) == VXGE_HW_OK);
530
531 if (first_dtr)
532 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
533
534 vxge_debug_entryexit(VXGE_TRACE,
535 "%s:%d Exiting...",
536 __func__, __LINE__);
537 return VXGE_HW_OK;
538 }
539
540 /*
541 * vxge_xmit_compl
542 *
543 * If an interrupt was raised to indicate DMA complete of the Tx packet,
544 * this function is called. It identifies the last TxD whose buffer was
545 * freed and frees all skbs whose data have already DMA'ed into the NICs
546 * internal memory.
547 */
548 static enum vxge_hw_status
549 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
550 enum vxge_hw_fifo_tcode t_code, void *userdata,
551 struct sk_buff ***skb_ptr, int nr_skb, int *more)
552 {
553 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
554 struct sk_buff *skb, **done_skb = *skb_ptr;
555 int pkt_cnt = 0;
556
557 vxge_debug_entryexit(VXGE_TRACE,
558 "%s:%d Entered....", __func__, __LINE__);
559
560 do {
561 int frg_cnt;
562 skb_frag_t *frag;
563 int i = 0, j;
564 struct vxge_tx_priv *txd_priv =
565 vxge_hw_fifo_txdl_private_get(dtr);
566
567 skb = txd_priv->skb;
568 frg_cnt = skb_shinfo(skb)->nr_frags;
569 frag = &skb_shinfo(skb)->frags[0];
570
571 vxge_debug_tx(VXGE_TRACE,
572 "%s: %s:%d fifo_hw = %p dtr = %p "
573 "tcode = 0x%x", fifo->ndev->name, __func__,
574 __LINE__, fifo_hw, dtr, t_code);
575 /* check skb validity */
576 vxge_assert(skb);
577 vxge_debug_tx(VXGE_TRACE,
578 "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
579 fifo->ndev->name, __func__, __LINE__,
580 skb, txd_priv, frg_cnt);
581 if (unlikely(t_code)) {
582 fifo->stats.tx_errors++;
583 vxge_debug_tx(VXGE_ERR,
584 "%s: tx: dtr %p completed due to "
585 "error t_code %01x", fifo->ndev->name,
586 dtr, t_code);
587 vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
588 }
589
590 /* for unfragmented skb */
591 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
592 skb_headlen(skb), PCI_DMA_TODEVICE);
593
594 for (j = 0; j < frg_cnt; j++) {
595 pci_unmap_page(fifo->pdev,
596 txd_priv->dma_buffers[i++],
597 frag->size, PCI_DMA_TODEVICE);
598 frag += 1;
599 }
600
601 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
602
603 /* Updating the statistics block */
604 fifo->stats.tx_frms++;
605 fifo->stats.tx_bytes += skb->len;
606
607 *done_skb++ = skb;
608
609 if (--nr_skb <= 0) {
610 *more = 1;
611 break;
612 }
613
614 pkt_cnt++;
615 if (pkt_cnt > fifo->indicate_max_pkts)
616 break;
617
618 } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
619 &dtr, &t_code) == VXGE_HW_OK);
620
621 *skb_ptr = done_skb;
622 if (netif_tx_queue_stopped(fifo->txq))
623 netif_tx_wake_queue(fifo->txq);
624
625 vxge_debug_entryexit(VXGE_TRACE,
626 "%s: %s:%d Exiting...",
627 fifo->ndev->name, __func__, __LINE__);
628 return VXGE_HW_OK;
629 }
630
631 /* select a vpath to transmit the packet */
632 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
633 {
634 u16 queue_len, counter = 0;
635 if (skb->protocol == htons(ETH_P_IP)) {
636 struct iphdr *ip;
637 struct tcphdr *th;
638
639 ip = ip_hdr(skb);
640
641 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
642 th = (struct tcphdr *)(((unsigned char *)ip) +
643 ip->ihl*4);
644
645 queue_len = vdev->no_of_vpath;
646 counter = (ntohs(th->source) +
647 ntohs(th->dest)) &
648 vdev->vpath_selector[queue_len - 1];
649 if (counter >= queue_len)
650 counter = queue_len - 1;
651 }
652 }
653 return counter;
654 }
655
656 static enum vxge_hw_status vxge_search_mac_addr_in_list(
657 struct vxge_vpath *vpath, u64 del_mac)
658 {
659 struct list_head *entry, *next;
660 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
661 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
662 return TRUE;
663 }
664 return FALSE;
665 }
666
667 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
668 {
669 struct vxge_mac_addrs *new_mac_entry;
670 u8 *mac_address = NULL;
671
672 if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
673 return TRUE;
674
675 new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
676 if (!new_mac_entry) {
677 vxge_debug_mem(VXGE_ERR,
678 "%s: memory allocation failed",
679 VXGE_DRIVER_NAME);
680 return FALSE;
681 }
682
683 list_add(&new_mac_entry->item, &vpath->mac_addr_list);
684
685 /* Copy the new mac address to the list */
686 mac_address = (u8 *)&new_mac_entry->macaddr;
687 memcpy(mac_address, mac->macaddr, ETH_ALEN);
688
689 new_mac_entry->state = mac->state;
690 vpath->mac_addr_cnt++;
691
692 /* Is this a multicast address */
693 if (0x01 & mac->macaddr[0])
694 vpath->mcast_addr_cnt++;
695
696 return TRUE;
697 }
698
699 /* Add a mac address to DA table */
700 static enum vxge_hw_status
701 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
702 {
703 enum vxge_hw_status status = VXGE_HW_OK;
704 struct vxge_vpath *vpath;
705 enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
706
707 if (0x01 & mac->macaddr[0]) /* multicast address */
708 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
709 else
710 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
711
712 vpath = &vdev->vpaths[mac->vpath_no];
713 status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
714 mac->macmask, duplicate_mode);
715 if (status != VXGE_HW_OK) {
716 vxge_debug_init(VXGE_ERR,
717 "DA config add entry failed for vpath:%d",
718 vpath->device_id);
719 } else
720 if (FALSE == vxge_mac_list_add(vpath, mac))
721 status = -EPERM;
722
723 return status;
724 }
725
726 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
727 {
728 struct macInfo mac_info;
729 u8 *mac_address = NULL;
730 u64 mac_addr = 0, vpath_vector = 0;
731 int vpath_idx = 0;
732 enum vxge_hw_status status = VXGE_HW_OK;
733 struct vxge_vpath *vpath = NULL;
734 struct __vxge_hw_device *hldev;
735
736 hldev = pci_get_drvdata(vdev->pdev);
737
738 mac_address = (u8 *)&mac_addr;
739 memcpy(mac_address, mac_header, ETH_ALEN);
740
741 /* Is this mac address already in the list? */
742 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
743 vpath = &vdev->vpaths[vpath_idx];
744 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
745 return vpath_idx;
746 }
747
748 memset(&mac_info, 0, sizeof(struct macInfo));
749 memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
750
751 /* Any vpath has room to add mac address to its da table? */
752 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
753 vpath = &vdev->vpaths[vpath_idx];
754 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
755 /* Add this mac address to this vpath */
756 mac_info.vpath_no = vpath_idx;
757 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
758 status = vxge_add_mac_addr(vdev, &mac_info);
759 if (status != VXGE_HW_OK)
760 return -EPERM;
761 return vpath_idx;
762 }
763 }
764
765 mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
766 vpath_idx = 0;
767 mac_info.vpath_no = vpath_idx;
768 /* Is the first vpath already selected as catch-basin ? */
769 vpath = &vdev->vpaths[vpath_idx];
770 if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
771 /* Add this mac address to this vpath */
772 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
773 return -EPERM;
774 return vpath_idx;
775 }
776
777 /* Select first vpath as catch-basin */
778 vpath_vector = vxge_mBIT(vpath->device_id);
779 status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
780 vxge_hw_mgmt_reg_type_mrpcim,
781 0,
782 (ulong)offsetof(
783 struct vxge_hw_mrpcim_reg,
784 rts_mgr_cbasin_cfg),
785 vpath_vector);
786 if (status != VXGE_HW_OK) {
787 vxge_debug_tx(VXGE_ERR,
788 "%s: Unable to set the vpath-%d in catch-basin mode",
789 VXGE_DRIVER_NAME, vpath->device_id);
790 return -EPERM;
791 }
792
793 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
794 return -EPERM;
795
796 return vpath_idx;
797 }
798
799 /**
800 * vxge_xmit
801 * @skb : the socket buffer containing the Tx data.
802 * @dev : device pointer.
803 *
804 * This function is the Tx entry point of the driver. Neterion NIC supports
805 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
806 */
807 static netdev_tx_t
808 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
809 {
810 struct vxge_fifo *fifo = NULL;
811 void *dtr_priv;
812 void *dtr = NULL;
813 struct vxgedev *vdev = NULL;
814 enum vxge_hw_status status;
815 int frg_cnt, first_frg_len;
816 skb_frag_t *frag;
817 int i = 0, j = 0, avail;
818 u64 dma_pointer;
819 struct vxge_tx_priv *txdl_priv = NULL;
820 struct __vxge_hw_fifo *fifo_hw;
821 int offload_type;
822 int vpath_no = 0;
823
824 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
825 dev->name, __func__, __LINE__);
826
827 /* A buffer with no data will be dropped */
828 if (unlikely(skb->len <= 0)) {
829 vxge_debug_tx(VXGE_ERR,
830 "%s: Buffer has no data..", dev->name);
831 dev_kfree_skb(skb);
832 return NETDEV_TX_OK;
833 }
834
835 vdev = netdev_priv(dev);
836
837 if (unlikely(!is_vxge_card_up(vdev))) {
838 vxge_debug_tx(VXGE_ERR,
839 "%s: vdev not initialized", dev->name);
840 dev_kfree_skb(skb);
841 return NETDEV_TX_OK;
842 }
843
844 if (vdev->config.addr_learn_en) {
845 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
846 if (vpath_no == -EPERM) {
847 vxge_debug_tx(VXGE_ERR,
848 "%s: Failed to store the mac address",
849 dev->name);
850 dev_kfree_skb(skb);
851 return NETDEV_TX_OK;
852 }
853 }
854
855 if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
856 vpath_no = skb_get_queue_mapping(skb);
857 else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
858 vpath_no = vxge_get_vpath_no(vdev, skb);
859
860 vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
861
862 if (vpath_no >= vdev->no_of_vpath)
863 vpath_no = 0;
864
865 fifo = &vdev->vpaths[vpath_no].fifo;
866 fifo_hw = fifo->handle;
867
868 if (netif_tx_queue_stopped(fifo->txq))
869 return NETDEV_TX_BUSY;
870
871 avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
872 if (avail == 0) {
873 vxge_debug_tx(VXGE_ERR,
874 "%s: No free TXDs available", dev->name);
875 fifo->stats.txd_not_free++;
876 goto _exit0;
877 }
878
879 /* Last TXD? Stop tx queue to avoid dropping packets. TX
880 * completion will resume the queue.
881 */
882 if (avail == 1)
883 netif_tx_stop_queue(fifo->txq);
884
885 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
886 if (unlikely(status != VXGE_HW_OK)) {
887 vxge_debug_tx(VXGE_ERR,
888 "%s: Out of descriptors .", dev->name);
889 fifo->stats.txd_out_of_desc++;
890 goto _exit0;
891 }
892
893 vxge_debug_tx(VXGE_TRACE,
894 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
895 dev->name, __func__, __LINE__,
896 fifo_hw, dtr, dtr_priv);
897
898 if (vlan_tx_tag_present(skb)) {
899 u16 vlan_tag = vlan_tx_tag_get(skb);
900 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
901 }
902
903 first_frg_len = skb_headlen(skb);
904
905 dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
906 PCI_DMA_TODEVICE);
907
908 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
909 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
910 fifo->stats.pci_map_fail++;
911 goto _exit0;
912 }
913
914 txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
915 txdl_priv->skb = skb;
916 txdl_priv->dma_buffers[j] = dma_pointer;
917
918 frg_cnt = skb_shinfo(skb)->nr_frags;
919 vxge_debug_tx(VXGE_TRACE,
920 "%s: %s:%d skb = %p txdl_priv = %p "
921 "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
922 __func__, __LINE__, skb, txdl_priv,
923 frg_cnt, (unsigned long long)dma_pointer);
924
925 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
926 first_frg_len);
927
928 frag = &skb_shinfo(skb)->frags[0];
929 for (i = 0; i < frg_cnt; i++) {
930 /* ignore 0 length fragment */
931 if (!frag->size)
932 continue;
933
934 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
935 frag->page_offset, frag->size,
936 PCI_DMA_TODEVICE);
937
938 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
939 goto _exit2;
940 vxge_debug_tx(VXGE_TRACE,
941 "%s: %s:%d frag = %d dma_pointer = 0x%llx",
942 dev->name, __func__, __LINE__, i,
943 (unsigned long long)dma_pointer);
944
945 txdl_priv->dma_buffers[j] = dma_pointer;
946 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
947 frag->size);
948 frag += 1;
949 }
950
951 offload_type = vxge_offload_type(skb);
952
953 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
954 int mss = vxge_tcp_mss(skb);
955 if (mss) {
956 vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
957 dev->name, __func__, __LINE__, mss);
958 vxge_hw_fifo_txdl_mss_set(dtr, mss);
959 } else {
960 vxge_assert(skb->len <=
961 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
962 vxge_assert(0);
963 goto _exit1;
964 }
965 }
966
967 if (skb->ip_summed == CHECKSUM_PARTIAL)
968 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
969 VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
970 VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
971 VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
972
973 vxge_hw_fifo_txdl_post(fifo_hw, dtr);
974
975 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
976 dev->name, __func__, __LINE__);
977 return NETDEV_TX_OK;
978
979 _exit2:
980 vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
981 _exit1:
982 j = 0;
983 frag = &skb_shinfo(skb)->frags[0];
984
985 pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
986 skb_headlen(skb), PCI_DMA_TODEVICE);
987
988 for (; j < i; j++) {
989 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
990 frag->size, PCI_DMA_TODEVICE);
991 frag += 1;
992 }
993
994 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
995 _exit0:
996 netif_tx_stop_queue(fifo->txq);
997 dev_kfree_skb(skb);
998
999 return NETDEV_TX_OK;
1000 }
1001
1002 /*
1003 * vxge_rx_term
1004 *
1005 * Function will be called by hw function to abort all outstanding receive
1006 * descriptors.
1007 */
1008 static void
1009 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1010 {
1011 struct vxge_ring *ring = (struct vxge_ring *)userdata;
1012 struct vxge_rx_priv *rx_priv =
1013 vxge_hw_ring_rxd_private_get(dtrh);
1014
1015 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1016 ring->ndev->name, __func__, __LINE__);
1017 if (state != VXGE_HW_RXD_STATE_POSTED)
1018 return;
1019
1020 pci_unmap_single(ring->pdev, rx_priv->data_dma,
1021 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1022
1023 dev_kfree_skb(rx_priv->skb);
1024 rx_priv->skb_data = NULL;
1025
1026 vxge_debug_entryexit(VXGE_TRACE,
1027 "%s: %s:%d Exiting...",
1028 ring->ndev->name, __func__, __LINE__);
1029 }
1030
1031 /*
1032 * vxge_tx_term
1033 *
1034 * Function will be called to abort all outstanding tx descriptors
1035 */
1036 static void
1037 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1038 {
1039 struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1040 skb_frag_t *frag;
1041 int i = 0, j, frg_cnt;
1042 struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1043 struct sk_buff *skb = txd_priv->skb;
1044
1045 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1046
1047 if (state != VXGE_HW_TXDL_STATE_POSTED)
1048 return;
1049
1050 /* check skb validity */
1051 vxge_assert(skb);
1052 frg_cnt = skb_shinfo(skb)->nr_frags;
1053 frag = &skb_shinfo(skb)->frags[0];
1054
1055 /* for unfragmented skb */
1056 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1057 skb_headlen(skb), PCI_DMA_TODEVICE);
1058
1059 for (j = 0; j < frg_cnt; j++) {
1060 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1061 frag->size, PCI_DMA_TODEVICE);
1062 frag += 1;
1063 }
1064
1065 dev_kfree_skb(skb);
1066
1067 vxge_debug_entryexit(VXGE_TRACE,
1068 "%s:%d Exiting...", __func__, __LINE__);
1069 }
1070
1071 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1072 {
1073 struct list_head *entry, *next;
1074 u64 del_mac = 0;
1075 u8 *mac_address = (u8 *) (&del_mac);
1076
1077 /* Copy the mac address to delete from the list */
1078 memcpy(mac_address, mac->macaddr, ETH_ALEN);
1079
1080 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1081 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1082 list_del(entry);
1083 kfree((struct vxge_mac_addrs *)entry);
1084 vpath->mac_addr_cnt--;
1085
1086 /* Is this a multicast address */
1087 if (0x01 & mac->macaddr[0])
1088 vpath->mcast_addr_cnt--;
1089 return TRUE;
1090 }
1091 }
1092
1093 return FALSE;
1094 }
1095
1096 /* delete a mac address from DA table */
1097 static enum vxge_hw_status
1098 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1099 {
1100 enum vxge_hw_status status = VXGE_HW_OK;
1101 struct vxge_vpath *vpath;
1102
1103 vpath = &vdev->vpaths[mac->vpath_no];
1104 status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1105 mac->macmask);
1106 if (status != VXGE_HW_OK) {
1107 vxge_debug_init(VXGE_ERR,
1108 "DA config delete entry failed for vpath:%d",
1109 vpath->device_id);
1110 } else
1111 vxge_mac_list_del(vpath, mac);
1112 return status;
1113 }
1114
1115 /**
1116 * vxge_set_multicast
1117 * @dev: pointer to the device structure
1118 *
1119 * Entry point for multicast address enable/disable
1120 * This function is a driver entry point which gets called by the kernel
1121 * whenever multicast addresses must be enabled/disabled. This also gets
1122 * called to set/reset promiscuous mode. Depending on the deivce flag, we
1123 * determine, if multicast address must be enabled or if promiscuous mode
1124 * is to be disabled etc.
1125 */
1126 static void vxge_set_multicast(struct net_device *dev)
1127 {
1128 struct netdev_hw_addr *ha;
1129 struct vxgedev *vdev;
1130 int i, mcast_cnt = 0;
1131 struct __vxge_hw_device *hldev;
1132 struct vxge_vpath *vpath;
1133 enum vxge_hw_status status = VXGE_HW_OK;
1134 struct macInfo mac_info;
1135 int vpath_idx = 0;
1136 struct vxge_mac_addrs *mac_entry;
1137 struct list_head *list_head;
1138 struct list_head *entry, *next;
1139 u8 *mac_address = NULL;
1140
1141 vxge_debug_entryexit(VXGE_TRACE,
1142 "%s:%d", __func__, __LINE__);
1143
1144 vdev = netdev_priv(dev);
1145 hldev = (struct __vxge_hw_device *)vdev->devh;
1146
1147 if (unlikely(!is_vxge_card_up(vdev)))
1148 return;
1149
1150 if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1151 for (i = 0; i < vdev->no_of_vpath; i++) {
1152 vpath = &vdev->vpaths[i];
1153 vxge_assert(vpath->is_open);
1154 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1155 if (status != VXGE_HW_OK)
1156 vxge_debug_init(VXGE_ERR, "failed to enable "
1157 "multicast, status %d", status);
1158 vdev->all_multi_flg = 1;
1159 }
1160 } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1161 for (i = 0; i < vdev->no_of_vpath; i++) {
1162 vpath = &vdev->vpaths[i];
1163 vxge_assert(vpath->is_open);
1164 status = vxge_hw_vpath_mcast_disable(vpath->handle);
1165 if (status != VXGE_HW_OK)
1166 vxge_debug_init(VXGE_ERR, "failed to disable "
1167 "multicast, status %d", status);
1168 vdev->all_multi_flg = 0;
1169 }
1170 }
1171
1172
1173 if (!vdev->config.addr_learn_en) {
1174 for (i = 0; i < vdev->no_of_vpath; i++) {
1175 vpath = &vdev->vpaths[i];
1176 vxge_assert(vpath->is_open);
1177
1178 if (dev->flags & IFF_PROMISC)
1179 status = vxge_hw_vpath_promisc_enable(
1180 vpath->handle);
1181 else
1182 status = vxge_hw_vpath_promisc_disable(
1183 vpath->handle);
1184 if (status != VXGE_HW_OK)
1185 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1186 ", status %d", dev->flags&IFF_PROMISC ?
1187 "enable" : "disable", status);
1188 }
1189 }
1190
1191 memset(&mac_info, 0, sizeof(struct macInfo));
1192 /* Update individual M_CAST address list */
1193 if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1194 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1195 list_head = &vdev->vpaths[0].mac_addr_list;
1196 if ((netdev_mc_count(dev) +
1197 (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1198 vdev->vpaths[0].max_mac_addr_cnt)
1199 goto _set_all_mcast;
1200
1201 /* Delete previous MC's */
1202 for (i = 0; i < mcast_cnt; i++) {
1203 list_for_each_safe(entry, next, list_head) {
1204 mac_entry = (struct vxge_mac_addrs *)entry;
1205 /* Copy the mac address to delete */
1206 mac_address = (u8 *)&mac_entry->macaddr;
1207 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1208
1209 /* Is this a multicast address */
1210 if (0x01 & mac_info.macaddr[0]) {
1211 for (vpath_idx = 0; vpath_idx <
1212 vdev->no_of_vpath;
1213 vpath_idx++) {
1214 mac_info.vpath_no = vpath_idx;
1215 status = vxge_del_mac_addr(
1216 vdev,
1217 &mac_info);
1218 }
1219 }
1220 }
1221 }
1222
1223 /* Add new ones */
1224 netdev_for_each_mc_addr(ha, dev) {
1225 memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1226 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1227 vpath_idx++) {
1228 mac_info.vpath_no = vpath_idx;
1229 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1230 status = vxge_add_mac_addr(vdev, &mac_info);
1231 if (status != VXGE_HW_OK) {
1232 vxge_debug_init(VXGE_ERR,
1233 "%s:%d Setting individual"
1234 "multicast address failed",
1235 __func__, __LINE__);
1236 goto _set_all_mcast;
1237 }
1238 }
1239 }
1240
1241 return;
1242 _set_all_mcast:
1243 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1244 /* Delete previous MC's */
1245 for (i = 0; i < mcast_cnt; i++) {
1246 list_for_each_safe(entry, next, list_head) {
1247 mac_entry = (struct vxge_mac_addrs *)entry;
1248 /* Copy the mac address to delete */
1249 mac_address = (u8 *)&mac_entry->macaddr;
1250 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1251
1252 /* Is this a multicast address */
1253 if (0x01 & mac_info.macaddr[0])
1254 break;
1255 }
1256
1257 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1258 vpath_idx++) {
1259 mac_info.vpath_no = vpath_idx;
1260 status = vxge_del_mac_addr(vdev, &mac_info);
1261 }
1262 }
1263
1264 /* Enable all multicast */
1265 for (i = 0; i < vdev->no_of_vpath; i++) {
1266 vpath = &vdev->vpaths[i];
1267 vxge_assert(vpath->is_open);
1268
1269 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1270 if (status != VXGE_HW_OK) {
1271 vxge_debug_init(VXGE_ERR,
1272 "%s:%d Enabling all multicasts failed",
1273 __func__, __LINE__);
1274 }
1275 vdev->all_multi_flg = 1;
1276 }
1277 dev->flags |= IFF_ALLMULTI;
1278 }
1279
1280 vxge_debug_entryexit(VXGE_TRACE,
1281 "%s:%d Exiting...", __func__, __LINE__);
1282 }
1283
1284 /**
1285 * vxge_set_mac_addr
1286 * @dev: pointer to the device structure
1287 *
1288 * Update entry "0" (default MAC addr)
1289 */
1290 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1291 {
1292 struct sockaddr *addr = p;
1293 struct vxgedev *vdev;
1294 struct __vxge_hw_device *hldev;
1295 enum vxge_hw_status status = VXGE_HW_OK;
1296 struct macInfo mac_info_new, mac_info_old;
1297 int vpath_idx = 0;
1298
1299 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1300
1301 vdev = netdev_priv(dev);
1302 hldev = vdev->devh;
1303
1304 if (!is_valid_ether_addr(addr->sa_data))
1305 return -EINVAL;
1306
1307 memset(&mac_info_new, 0, sizeof(struct macInfo));
1308 memset(&mac_info_old, 0, sizeof(struct macInfo));
1309
1310 vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...",
1311 __func__, __LINE__);
1312
1313 /* Get the old address */
1314 memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1315
1316 /* Copy the new address */
1317 memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1318
1319 /* First delete the old mac address from all the vpaths
1320 as we can't specify the index while adding new mac address */
1321 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1322 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1323 if (!vpath->is_open) {
1324 /* This can happen when this interface is added/removed
1325 to the bonding interface. Delete this station address
1326 from the linked list */
1327 vxge_mac_list_del(vpath, &mac_info_old);
1328
1329 /* Add this new address to the linked list
1330 for later restoring */
1331 vxge_mac_list_add(vpath, &mac_info_new);
1332
1333 continue;
1334 }
1335 /* Delete the station address */
1336 mac_info_old.vpath_no = vpath_idx;
1337 status = vxge_del_mac_addr(vdev, &mac_info_old);
1338 }
1339
1340 if (unlikely(!is_vxge_card_up(vdev))) {
1341 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1342 return VXGE_HW_OK;
1343 }
1344
1345 /* Set this mac address to all the vpaths */
1346 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1347 mac_info_new.vpath_no = vpath_idx;
1348 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1349 status = vxge_add_mac_addr(vdev, &mac_info_new);
1350 if (status != VXGE_HW_OK)
1351 return -EINVAL;
1352 }
1353
1354 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1355
1356 return status;
1357 }
1358
1359 /*
1360 * vxge_vpath_intr_enable
1361 * @vdev: pointer to vdev
1362 * @vp_id: vpath for which to enable the interrupts
1363 *
1364 * Enables the interrupts for the vpath
1365 */
1366 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1367 {
1368 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1369 int msix_id = 0;
1370 int tim_msix_id[4] = {0, 1, 0, 0};
1371 int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1372
1373 vxge_hw_vpath_intr_enable(vpath->handle);
1374
1375 if (vdev->config.intr_type == INTA)
1376 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1377 else {
1378 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1379 alarm_msix_id);
1380
1381 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
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 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1387 VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1388 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1389 }
1390 }
1391
1392 /*
1393 * vxge_vpath_intr_disable
1394 * @vdev: pointer to vdev
1395 * @vp_id: vpath for which to disable the interrupts
1396 *
1397 * Disables the interrupts for the vpath
1398 */
1399 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1400 {
1401 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1402 struct __vxge_hw_device *hldev;
1403 int msix_id;
1404
1405 hldev = pci_get_drvdata(vdev->pdev);
1406
1407 vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1408
1409 vxge_hw_vpath_intr_disable(vpath->handle);
1410
1411 if (vdev->config.intr_type == INTA)
1412 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1413 else {
1414 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1415 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1416 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1417
1418 /* disable the alarm vector */
1419 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1420 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1421 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1422 }
1423 }
1424
1425 /* list all mac addresses from DA table */
1426 static enum vxge_hw_status
1427 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1428 {
1429 enum vxge_hw_status status = VXGE_HW_OK;
1430 unsigned char macmask[ETH_ALEN];
1431 unsigned char macaddr[ETH_ALEN];
1432
1433 status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1434 macaddr, macmask);
1435 if (status != VXGE_HW_OK) {
1436 vxge_debug_init(VXGE_ERR,
1437 "DA config list entry failed for vpath:%d",
1438 vpath->device_id);
1439 return status;
1440 }
1441
1442 while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1443 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1444 macaddr, macmask);
1445 if (status != VXGE_HW_OK)
1446 break;
1447 }
1448
1449 return status;
1450 }
1451
1452 /* Store all mac addresses from the list to the DA table */
1453 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1454 {
1455 enum vxge_hw_status status = VXGE_HW_OK;
1456 struct macInfo mac_info;
1457 u8 *mac_address = NULL;
1458 struct list_head *entry, *next;
1459
1460 memset(&mac_info, 0, sizeof(struct macInfo));
1461
1462 if (vpath->is_open) {
1463 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1464 mac_address =
1465 (u8 *)&
1466 ((struct vxge_mac_addrs *)entry)->macaddr;
1467 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1468 ((struct vxge_mac_addrs *)entry)->state =
1469 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1470 /* does this mac address already exist in da table? */
1471 status = vxge_search_mac_addr_in_da_table(vpath,
1472 &mac_info);
1473 if (status != VXGE_HW_OK) {
1474 /* Add this mac address to the DA table */
1475 status = vxge_hw_vpath_mac_addr_add(
1476 vpath->handle, mac_info.macaddr,
1477 mac_info.macmask,
1478 VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1479 if (status != VXGE_HW_OK) {
1480 vxge_debug_init(VXGE_ERR,
1481 "DA add entry failed for vpath:%d",
1482 vpath->device_id);
1483 ((struct vxge_mac_addrs *)entry)->state
1484 = VXGE_LL_MAC_ADDR_IN_LIST;
1485 }
1486 }
1487 }
1488 }
1489
1490 return status;
1491 }
1492
1493 /* Store all vlan ids from the list to the vid table */
1494 static enum vxge_hw_status
1495 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1496 {
1497 enum vxge_hw_status status = VXGE_HW_OK;
1498 struct vxgedev *vdev = vpath->vdev;
1499 u16 vid;
1500
1501 if (vdev->vlgrp && vpath->is_open) {
1502
1503 for (vid = 0; vid < VLAN_N_VID; vid++) {
1504 if (!vlan_group_get_device(vdev->vlgrp, vid))
1505 continue;
1506 /* Add these vlan to the vid table */
1507 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1508 }
1509 }
1510
1511 return status;
1512 }
1513
1514 /*
1515 * vxge_reset_vpath
1516 * @vdev: pointer to vdev
1517 * @vp_id: vpath to reset
1518 *
1519 * Resets the vpath
1520 */
1521 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1522 {
1523 enum vxge_hw_status status = VXGE_HW_OK;
1524 struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1525 int ret = 0;
1526
1527 /* check if device is down already */
1528 if (unlikely(!is_vxge_card_up(vdev)))
1529 return 0;
1530
1531 /* is device reset already scheduled */
1532 if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1533 return 0;
1534
1535 if (vpath->handle) {
1536 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1537 if (is_vxge_card_up(vdev) &&
1538 vxge_hw_vpath_recover_from_reset(vpath->handle)
1539 != VXGE_HW_OK) {
1540 vxge_debug_init(VXGE_ERR,
1541 "vxge_hw_vpath_recover_from_reset"
1542 "failed for vpath:%d", vp_id);
1543 return status;
1544 }
1545 } else {
1546 vxge_debug_init(VXGE_ERR,
1547 "vxge_hw_vpath_reset failed for"
1548 "vpath:%d", vp_id);
1549 return status;
1550 }
1551 } else
1552 return VXGE_HW_FAIL;
1553
1554 vxge_restore_vpath_mac_addr(vpath);
1555 vxge_restore_vpath_vid_table(vpath);
1556
1557 /* Enable all broadcast */
1558 vxge_hw_vpath_bcast_enable(vpath->handle);
1559
1560 /* Enable all multicast */
1561 if (vdev->all_multi_flg) {
1562 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1563 if (status != VXGE_HW_OK)
1564 vxge_debug_init(VXGE_ERR,
1565 "%s:%d Enabling multicast failed",
1566 __func__, __LINE__);
1567 }
1568
1569 /* Enable the interrupts */
1570 vxge_vpath_intr_enable(vdev, vp_id);
1571
1572 smp_wmb();
1573
1574 /* Enable the flow of traffic through the vpath */
1575 vxge_hw_vpath_enable(vpath->handle);
1576
1577 smp_wmb();
1578 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1579 vpath->ring.last_status = VXGE_HW_OK;
1580
1581 /* Vpath reset done */
1582 clear_bit(vp_id, &vdev->vp_reset);
1583
1584 /* Start the vpath queue */
1585 if (netif_tx_queue_stopped(vpath->fifo.txq))
1586 netif_tx_wake_queue(vpath->fifo.txq);
1587
1588 return ret;
1589 }
1590
1591 static int do_vxge_reset(struct vxgedev *vdev, int event)
1592 {
1593 enum vxge_hw_status status;
1594 int ret = 0, vp_id, i;
1595
1596 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1597
1598 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1599 /* check if device is down already */
1600 if (unlikely(!is_vxge_card_up(vdev)))
1601 return 0;
1602
1603 /* is reset already scheduled */
1604 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1605 return 0;
1606 }
1607
1608 if (event == VXGE_LL_FULL_RESET) {
1609 netif_carrier_off(vdev->ndev);
1610
1611 /* wait for all the vpath reset to complete */
1612 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1613 while (test_bit(vp_id, &vdev->vp_reset))
1614 msleep(50);
1615 }
1616
1617 netif_carrier_on(vdev->ndev);
1618
1619 /* if execution mode is set to debug, don't reset the adapter */
1620 if (unlikely(vdev->exec_mode)) {
1621 vxge_debug_init(VXGE_ERR,
1622 "%s: execution mode is debug, returning..",
1623 vdev->ndev->name);
1624 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1625 netif_tx_stop_all_queues(vdev->ndev);
1626 return 0;
1627 }
1628 }
1629
1630 if (event == VXGE_LL_FULL_RESET) {
1631 vxge_hw_device_wait_receive_idle(vdev->devh);
1632 vxge_hw_device_intr_disable(vdev->devh);
1633
1634 switch (vdev->cric_err_event) {
1635 case VXGE_HW_EVENT_UNKNOWN:
1636 netif_tx_stop_all_queues(vdev->ndev);
1637 vxge_debug_init(VXGE_ERR,
1638 "fatal: %s: Disabling device due to"
1639 "unknown error",
1640 vdev->ndev->name);
1641 ret = -EPERM;
1642 goto out;
1643 case VXGE_HW_EVENT_RESET_START:
1644 break;
1645 case VXGE_HW_EVENT_RESET_COMPLETE:
1646 case VXGE_HW_EVENT_LINK_DOWN:
1647 case VXGE_HW_EVENT_LINK_UP:
1648 case VXGE_HW_EVENT_ALARM_CLEARED:
1649 case VXGE_HW_EVENT_ECCERR:
1650 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1651 ret = -EPERM;
1652 goto out;
1653 case VXGE_HW_EVENT_FIFO_ERR:
1654 case VXGE_HW_EVENT_VPATH_ERR:
1655 break;
1656 case VXGE_HW_EVENT_CRITICAL_ERR:
1657 netif_tx_stop_all_queues(vdev->ndev);
1658 vxge_debug_init(VXGE_ERR,
1659 "fatal: %s: Disabling device due to"
1660 "serious error",
1661 vdev->ndev->name);
1662 /* SOP or device reset required */
1663 /* This event is not currently used */
1664 ret = -EPERM;
1665 goto out;
1666 case VXGE_HW_EVENT_SERR:
1667 netif_tx_stop_all_queues(vdev->ndev);
1668 vxge_debug_init(VXGE_ERR,
1669 "fatal: %s: Disabling device due to"
1670 "serious error",
1671 vdev->ndev->name);
1672 ret = -EPERM;
1673 goto out;
1674 case VXGE_HW_EVENT_SRPCIM_SERR:
1675 case VXGE_HW_EVENT_MRPCIM_SERR:
1676 ret = -EPERM;
1677 goto out;
1678 case VXGE_HW_EVENT_SLOT_FREEZE:
1679 netif_tx_stop_all_queues(vdev->ndev);
1680 vxge_debug_init(VXGE_ERR,
1681 "fatal: %s: Disabling device due to"
1682 "slot freeze",
1683 vdev->ndev->name);
1684 ret = -EPERM;
1685 goto out;
1686 default:
1687 break;
1688
1689 }
1690 }
1691
1692 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1693 netif_tx_stop_all_queues(vdev->ndev);
1694
1695 if (event == VXGE_LL_FULL_RESET) {
1696 status = vxge_reset_all_vpaths(vdev);
1697 if (status != VXGE_HW_OK) {
1698 vxge_debug_init(VXGE_ERR,
1699 "fatal: %s: can not reset vpaths",
1700 vdev->ndev->name);
1701 ret = -EPERM;
1702 goto out;
1703 }
1704 }
1705
1706 if (event == VXGE_LL_COMPL_RESET) {
1707 for (i = 0; i < vdev->no_of_vpath; i++)
1708 if (vdev->vpaths[i].handle) {
1709 if (vxge_hw_vpath_recover_from_reset(
1710 vdev->vpaths[i].handle)
1711 != VXGE_HW_OK) {
1712 vxge_debug_init(VXGE_ERR,
1713 "vxge_hw_vpath_recover_"
1714 "from_reset failed for vpath: "
1715 "%d", i);
1716 ret = -EPERM;
1717 goto out;
1718 }
1719 } else {
1720 vxge_debug_init(VXGE_ERR,
1721 "vxge_hw_vpath_reset failed for "
1722 "vpath:%d", i);
1723 ret = -EPERM;
1724 goto out;
1725 }
1726 }
1727
1728 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1729 /* Reprogram the DA table with populated mac addresses */
1730 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1731 vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1732 vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1733 }
1734
1735 /* enable vpath interrupts */
1736 for (i = 0; i < vdev->no_of_vpath; i++)
1737 vxge_vpath_intr_enable(vdev, i);
1738
1739 vxge_hw_device_intr_enable(vdev->devh);
1740
1741 smp_wmb();
1742
1743 /* Indicate card up */
1744 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1745
1746 /* Get the traffic to flow through the vpaths */
1747 for (i = 0; i < vdev->no_of_vpath; i++) {
1748 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1749 smp_wmb();
1750 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1751 }
1752
1753 netif_tx_wake_all_queues(vdev->ndev);
1754 }
1755
1756 out:
1757 vxge_debug_entryexit(VXGE_TRACE,
1758 "%s:%d Exiting...", __func__, __LINE__);
1759
1760 /* Indicate reset done */
1761 if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1762 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1763 return ret;
1764 }
1765
1766 /*
1767 * vxge_reset
1768 * @vdev: pointer to ll device
1769 *
1770 * driver may reset the chip on events of serr, eccerr, etc
1771 */
1772 static void vxge_reset(struct work_struct *work)
1773 {
1774 struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1775
1776 if (!netif_running(vdev->ndev))
1777 return;
1778
1779 do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1780 }
1781
1782 /**
1783 * vxge_poll - Receive handler when Receive Polling is used.
1784 * @dev: pointer to the device structure.
1785 * @budget: Number of packets budgeted to be processed in this iteration.
1786 *
1787 * This function comes into picture only if Receive side is being handled
1788 * through polling (called NAPI in linux). It mostly does what the normal
1789 * Rx interrupt handler does in terms of descriptor and packet processing
1790 * but not in an interrupt context. Also it will process a specified number
1791 * of packets at most in one iteration. This value is passed down by the
1792 * kernel as the function argument 'budget'.
1793 */
1794 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1795 {
1796 struct vxge_ring *ring =
1797 container_of(napi, struct vxge_ring, napi);
1798 int budget_org = budget;
1799 ring->budget = budget;
1800
1801 vxge_hw_vpath_poll_rx(ring->handle);
1802
1803 if (ring->pkts_processed < budget_org) {
1804 napi_complete(napi);
1805 /* Re enable the Rx interrupts for the vpath */
1806 vxge_hw_channel_msix_unmask(
1807 (struct __vxge_hw_channel *)ring->handle,
1808 ring->rx_vector_no);
1809 }
1810
1811 return ring->pkts_processed;
1812 }
1813
1814 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1815 {
1816 struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1817 int pkts_processed = 0;
1818 int i;
1819 int budget_org = budget;
1820 struct vxge_ring *ring;
1821
1822 struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1823
1824 for (i = 0; i < vdev->no_of_vpath; i++) {
1825 ring = &vdev->vpaths[i].ring;
1826 ring->budget = budget;
1827 vxge_hw_vpath_poll_rx(ring->handle);
1828 pkts_processed += ring->pkts_processed;
1829 budget -= ring->pkts_processed;
1830 if (budget <= 0)
1831 break;
1832 }
1833
1834 VXGE_COMPLETE_ALL_TX(vdev);
1835
1836 if (pkts_processed < budget_org) {
1837 napi_complete(napi);
1838 /* Re enable the Rx interrupts for the ring */
1839 vxge_hw_device_unmask_all(hldev);
1840 vxge_hw_device_flush_io(hldev);
1841 }
1842
1843 return pkts_processed;
1844 }
1845
1846 #ifdef CONFIG_NET_POLL_CONTROLLER
1847 /**
1848 * vxge_netpoll - netpoll event handler entry point
1849 * @dev : pointer to the device structure.
1850 * Description:
1851 * This function will be called by upper layer to check for events on the
1852 * interface in situations where interrupts are disabled. It is used for
1853 * specific in-kernel networking tasks, such as remote consoles and kernel
1854 * debugging over the network (example netdump in RedHat).
1855 */
1856 static void vxge_netpoll(struct net_device *dev)
1857 {
1858 struct __vxge_hw_device *hldev;
1859 struct vxgedev *vdev;
1860
1861 vdev = netdev_priv(dev);
1862 hldev = pci_get_drvdata(vdev->pdev);
1863
1864 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1865
1866 if (pci_channel_offline(vdev->pdev))
1867 return;
1868
1869 disable_irq(dev->irq);
1870 vxge_hw_device_clear_tx_rx(hldev);
1871
1872 vxge_hw_device_clear_tx_rx(hldev);
1873 VXGE_COMPLETE_ALL_RX(vdev);
1874 VXGE_COMPLETE_ALL_TX(vdev);
1875
1876 enable_irq(dev->irq);
1877
1878 vxge_debug_entryexit(VXGE_TRACE,
1879 "%s:%d Exiting...", __func__, __LINE__);
1880 }
1881 #endif
1882
1883 /* RTH configuration */
1884 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1885 {
1886 enum vxge_hw_status status = VXGE_HW_OK;
1887 struct vxge_hw_rth_hash_types hash_types;
1888 u8 itable[256] = {0}; /* indirection table */
1889 u8 mtable[256] = {0}; /* CPU to vpath mapping */
1890 int index;
1891
1892 /*
1893 * Filling
1894 * - itable with bucket numbers
1895 * - mtable with bucket-to-vpath mapping
1896 */
1897 for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1898 itable[index] = index;
1899 mtable[index] = index % vdev->no_of_vpath;
1900 }
1901
1902 /* set indirection table, bucket-to-vpath mapping */
1903 status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1904 vdev->no_of_vpath,
1905 mtable, itable,
1906 vdev->config.rth_bkt_sz);
1907 if (status != VXGE_HW_OK) {
1908 vxge_debug_init(VXGE_ERR,
1909 "RTH indirection table configuration failed "
1910 "for vpath:%d", vdev->vpaths[0].device_id);
1911 return status;
1912 }
1913
1914 /* Fill RTH hash types */
1915 hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4;
1916 hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4;
1917 hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6;
1918 hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6;
1919 hash_types.hash_type_tcpipv6ex_en =
1920 vdev->config.rth_hash_type_tcpipv6ex;
1921 hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex;
1922
1923 /*
1924 * Because the itable_set() method uses the active_table field
1925 * for the target virtual path the RTH config should be updated
1926 * for all VPATHs. The h/w only uses the lowest numbered VPATH
1927 * when steering frames.
1928 */
1929 for (index = 0; index < vdev->no_of_vpath; index++) {
1930 status = vxge_hw_vpath_rts_rth_set(
1931 vdev->vpaths[index].handle,
1932 vdev->config.rth_algorithm,
1933 &hash_types,
1934 vdev->config.rth_bkt_sz);
1935 if (status != VXGE_HW_OK) {
1936 vxge_debug_init(VXGE_ERR,
1937 "RTH configuration failed for vpath:%d",
1938 vdev->vpaths[index].device_id);
1939 return status;
1940 }
1941 }
1942
1943 return status;
1944 }
1945
1946 /* reset vpaths */
1947 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1948 {
1949 enum vxge_hw_status status = VXGE_HW_OK;
1950 struct vxge_vpath *vpath;
1951 int i;
1952
1953 for (i = 0; i < vdev->no_of_vpath; i++) {
1954 vpath = &vdev->vpaths[i];
1955 if (vpath->handle) {
1956 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1957 if (is_vxge_card_up(vdev) &&
1958 vxge_hw_vpath_recover_from_reset(
1959 vpath->handle) != VXGE_HW_OK) {
1960 vxge_debug_init(VXGE_ERR,
1961 "vxge_hw_vpath_recover_"
1962 "from_reset failed for vpath: "
1963 "%d", i);
1964 return status;
1965 }
1966 } else {
1967 vxge_debug_init(VXGE_ERR,
1968 "vxge_hw_vpath_reset failed for "
1969 "vpath:%d", i);
1970 return status;
1971 }
1972 }
1973 }
1974
1975 return status;
1976 }
1977
1978 /* close vpaths */
1979 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
1980 {
1981 struct vxge_vpath *vpath;
1982 int i;
1983
1984 for (i = index; i < vdev->no_of_vpath; i++) {
1985 vpath = &vdev->vpaths[i];
1986
1987 if (vpath->handle && vpath->is_open) {
1988 vxge_hw_vpath_close(vpath->handle);
1989 vdev->stats.vpaths_open--;
1990 }
1991 vpath->is_open = 0;
1992 vpath->handle = NULL;
1993 }
1994 }
1995
1996 /* open vpaths */
1997 static int vxge_open_vpaths(struct vxgedev *vdev)
1998 {
1999 struct vxge_hw_vpath_attr attr;
2000 enum vxge_hw_status status;
2001 struct vxge_vpath *vpath;
2002 u32 vp_id = 0;
2003 int i;
2004
2005 for (i = 0; i < vdev->no_of_vpath; i++) {
2006 vpath = &vdev->vpaths[i];
2007 vxge_assert(vpath->is_configured);
2008
2009 if (!vdev->titan1) {
2010 struct vxge_hw_vp_config *vcfg;
2011 vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2012
2013 vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2014 vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2015 vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2016 vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2017 vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2018 vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2019 vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2020 vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2021 vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2022 }
2023
2024 attr.vp_id = vpath->device_id;
2025 attr.fifo_attr.callback = vxge_xmit_compl;
2026 attr.fifo_attr.txdl_term = vxge_tx_term;
2027 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2028 attr.fifo_attr.userdata = &vpath->fifo;
2029
2030 attr.ring_attr.callback = vxge_rx_1b_compl;
2031 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2032 attr.ring_attr.rxd_term = vxge_rx_term;
2033 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2034 attr.ring_attr.userdata = &vpath->ring;
2035
2036 vpath->ring.ndev = vdev->ndev;
2037 vpath->ring.pdev = vdev->pdev;
2038
2039 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2040 if (status == VXGE_HW_OK) {
2041 vpath->fifo.handle =
2042 (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2043 vpath->ring.handle =
2044 (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2045 vpath->fifo.tx_steering_type =
2046 vdev->config.tx_steering_type;
2047 vpath->fifo.ndev = vdev->ndev;
2048 vpath->fifo.pdev = vdev->pdev;
2049 if (vdev->config.tx_steering_type)
2050 vpath->fifo.txq =
2051 netdev_get_tx_queue(vdev->ndev, i);
2052 else
2053 vpath->fifo.txq =
2054 netdev_get_tx_queue(vdev->ndev, 0);
2055 vpath->fifo.indicate_max_pkts =
2056 vdev->config.fifo_indicate_max_pkts;
2057 vpath->ring.rx_vector_no = 0;
2058 vpath->ring.rx_csum = vdev->rx_csum;
2059 vpath->ring.rx_hwts = vdev->rx_hwts;
2060 vpath->is_open = 1;
2061 vdev->vp_handles[i] = vpath->handle;
2062 vpath->ring.gro_enable = vdev->config.gro_enable;
2063 vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2064 vdev->stats.vpaths_open++;
2065 } else {
2066 vdev->stats.vpath_open_fail++;
2067 vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2068 "open with status: %d",
2069 vdev->ndev->name, vpath->device_id,
2070 status);
2071 vxge_close_vpaths(vdev, 0);
2072 return -EPERM;
2073 }
2074
2075 vp_id = vpath->handle->vpath->vp_id;
2076 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2077 }
2078
2079 return VXGE_HW_OK;
2080 }
2081
2082 /*
2083 * vxge_isr_napi
2084 * @irq: the irq of the device.
2085 * @dev_id: a void pointer to the hldev structure of the Titan device
2086 * @ptregs: pointer to the registers pushed on the stack.
2087 *
2088 * This function is the ISR handler of the device when napi is enabled. It
2089 * identifies the reason for the interrupt and calls the relevant service
2090 * routines.
2091 */
2092 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2093 {
2094 struct net_device *dev;
2095 struct __vxge_hw_device *hldev;
2096 u64 reason;
2097 enum vxge_hw_status status;
2098 struct vxgedev *vdev = (struct vxgedev *)dev_id;
2099
2100 vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2101
2102 dev = vdev->ndev;
2103 hldev = pci_get_drvdata(vdev->pdev);
2104
2105 if (pci_channel_offline(vdev->pdev))
2106 return IRQ_NONE;
2107
2108 if (unlikely(!is_vxge_card_up(vdev)))
2109 return IRQ_HANDLED;
2110
2111 status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2112 if (status == VXGE_HW_OK) {
2113 vxge_hw_device_mask_all(hldev);
2114
2115 if (reason &
2116 VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2117 vdev->vpaths_deployed >>
2118 (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2119
2120 vxge_hw_device_clear_tx_rx(hldev);
2121 napi_schedule(&vdev->napi);
2122 vxge_debug_intr(VXGE_TRACE,
2123 "%s:%d Exiting...", __func__, __LINE__);
2124 return IRQ_HANDLED;
2125 } else
2126 vxge_hw_device_unmask_all(hldev);
2127 } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2128 (status == VXGE_HW_ERR_CRITICAL) ||
2129 (status == VXGE_HW_ERR_FIFO))) {
2130 vxge_hw_device_mask_all(hldev);
2131 vxge_hw_device_flush_io(hldev);
2132 return IRQ_HANDLED;
2133 } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2134 return IRQ_HANDLED;
2135
2136 vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__);
2137 return IRQ_NONE;
2138 }
2139
2140 #ifdef CONFIG_PCI_MSI
2141
2142 static irqreturn_t
2143 vxge_tx_msix_handle(int irq, void *dev_id)
2144 {
2145 struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2146
2147 VXGE_COMPLETE_VPATH_TX(fifo);
2148
2149 return IRQ_HANDLED;
2150 }
2151
2152 static irqreturn_t
2153 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2154 {
2155 struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2156
2157 /* MSIX_IDX for Rx is 1 */
2158 vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2159 ring->rx_vector_no);
2160
2161 napi_schedule(&ring->napi);
2162 return IRQ_HANDLED;
2163 }
2164
2165 static irqreturn_t
2166 vxge_alarm_msix_handle(int irq, void *dev_id)
2167 {
2168 int i;
2169 enum vxge_hw_status status;
2170 struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2171 struct vxgedev *vdev = vpath->vdev;
2172 int msix_id = (vpath->handle->vpath->vp_id *
2173 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2174
2175 for (i = 0; i < vdev->no_of_vpath; i++) {
2176 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2177
2178 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2179 vdev->exec_mode);
2180 if (status == VXGE_HW_OK) {
2181
2182 vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2183 msix_id);
2184 continue;
2185 }
2186 vxge_debug_intr(VXGE_ERR,
2187 "%s: vxge_hw_vpath_alarm_process failed %x ",
2188 VXGE_DRIVER_NAME, status);
2189 }
2190 return IRQ_HANDLED;
2191 }
2192
2193 static int vxge_alloc_msix(struct vxgedev *vdev)
2194 {
2195 int j, i, ret = 0;
2196 int msix_intr_vect = 0, temp;
2197 vdev->intr_cnt = 0;
2198
2199 start:
2200 /* Tx/Rx MSIX Vectors count */
2201 vdev->intr_cnt = vdev->no_of_vpath * 2;
2202
2203 /* Alarm MSIX Vectors count */
2204 vdev->intr_cnt++;
2205
2206 vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2207 GFP_KERNEL);
2208 if (!vdev->entries) {
2209 vxge_debug_init(VXGE_ERR,
2210 "%s: memory allocation failed",
2211 VXGE_DRIVER_NAME);
2212 ret = -ENOMEM;
2213 goto alloc_entries_failed;
2214 }
2215
2216 vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2217 sizeof(struct vxge_msix_entry),
2218 GFP_KERNEL);
2219 if (!vdev->vxge_entries) {
2220 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2221 VXGE_DRIVER_NAME);
2222 ret = -ENOMEM;
2223 goto alloc_vxge_entries_failed;
2224 }
2225
2226 for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2227
2228 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2229
2230 /* Initialize the fifo vector */
2231 vdev->entries[j].entry = msix_intr_vect;
2232 vdev->vxge_entries[j].entry = msix_intr_vect;
2233 vdev->vxge_entries[j].in_use = 0;
2234 j++;
2235
2236 /* Initialize the ring vector */
2237 vdev->entries[j].entry = msix_intr_vect + 1;
2238 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2239 vdev->vxge_entries[j].in_use = 0;
2240 j++;
2241 }
2242
2243 /* Initialize the alarm vector */
2244 vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2245 vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2246 vdev->vxge_entries[j].in_use = 0;
2247
2248 ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2249 if (ret > 0) {
2250 vxge_debug_init(VXGE_ERR,
2251 "%s: MSI-X enable failed for %d vectors, ret: %d",
2252 VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2253 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2254 ret = -ENODEV;
2255 goto enable_msix_failed;
2256 }
2257
2258 kfree(vdev->entries);
2259 kfree(vdev->vxge_entries);
2260 vdev->entries = NULL;
2261 vdev->vxge_entries = NULL;
2262 /* Try with less no of vector by reducing no of vpaths count */
2263 temp = (ret - 1)/2;
2264 vxge_close_vpaths(vdev, temp);
2265 vdev->no_of_vpath = temp;
2266 goto start;
2267 } else if (ret < 0) {
2268 ret = -ENODEV;
2269 goto enable_msix_failed;
2270 }
2271 return 0;
2272
2273 enable_msix_failed:
2274 kfree(vdev->vxge_entries);
2275 alloc_vxge_entries_failed:
2276 kfree(vdev->entries);
2277 alloc_entries_failed:
2278 return ret;
2279 }
2280
2281 static int vxge_enable_msix(struct vxgedev *vdev)
2282 {
2283
2284 int i, ret = 0;
2285 /* 0 - Tx, 1 - Rx */
2286 int tim_msix_id[4] = {0, 1, 0, 0};
2287
2288 vdev->intr_cnt = 0;
2289
2290 /* allocate msix vectors */
2291 ret = vxge_alloc_msix(vdev);
2292 if (!ret) {
2293 for (i = 0; i < vdev->no_of_vpath; i++) {
2294 struct vxge_vpath *vpath = &vdev->vpaths[i];
2295
2296 /* If fifo or ring are not enabled, the MSIX vector for
2297 * it should be set to 0.
2298 */
2299 vpath->ring.rx_vector_no = (vpath->device_id *
2300 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2301
2302 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2303 VXGE_ALARM_MSIX_ID);
2304 }
2305 }
2306
2307 return ret;
2308 }
2309
2310 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2311 {
2312 int intr_cnt;
2313
2314 for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2315 intr_cnt++) {
2316 if (vdev->vxge_entries[intr_cnt].in_use) {
2317 synchronize_irq(vdev->entries[intr_cnt].vector);
2318 free_irq(vdev->entries[intr_cnt].vector,
2319 vdev->vxge_entries[intr_cnt].arg);
2320 vdev->vxge_entries[intr_cnt].in_use = 0;
2321 }
2322 }
2323
2324 kfree(vdev->entries);
2325 kfree(vdev->vxge_entries);
2326 vdev->entries = NULL;
2327 vdev->vxge_entries = NULL;
2328
2329 if (vdev->config.intr_type == MSI_X)
2330 pci_disable_msix(vdev->pdev);
2331 }
2332 #endif
2333
2334 static void vxge_rem_isr(struct vxgedev *vdev)
2335 {
2336 struct __vxge_hw_device *hldev;
2337 hldev = pci_get_drvdata(vdev->pdev);
2338
2339 #ifdef CONFIG_PCI_MSI
2340 if (vdev->config.intr_type == MSI_X) {
2341 vxge_rem_msix_isr(vdev);
2342 } else
2343 #endif
2344 if (vdev->config.intr_type == INTA) {
2345 synchronize_irq(vdev->pdev->irq);
2346 free_irq(vdev->pdev->irq, vdev);
2347 }
2348 }
2349
2350 static int vxge_add_isr(struct vxgedev *vdev)
2351 {
2352 int ret = 0;
2353 #ifdef CONFIG_PCI_MSI
2354 int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2355 int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2356
2357 if (vdev->config.intr_type == MSI_X)
2358 ret = vxge_enable_msix(vdev);
2359
2360 if (ret) {
2361 vxge_debug_init(VXGE_ERR,
2362 "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2363 vxge_debug_init(VXGE_ERR,
2364 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2365 vdev->config.intr_type = INTA;
2366 }
2367
2368 if (vdev->config.intr_type == MSI_X) {
2369 for (intr_idx = 0;
2370 intr_idx < (vdev->no_of_vpath *
2371 VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2372
2373 msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2374 irq_req = 0;
2375
2376 switch (msix_idx) {
2377 case 0:
2378 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2379 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2380 vdev->ndev->name,
2381 vdev->entries[intr_cnt].entry,
2382 pci_fun, vp_idx);
2383 ret = request_irq(
2384 vdev->entries[intr_cnt].vector,
2385 vxge_tx_msix_handle, 0,
2386 vdev->desc[intr_cnt],
2387 &vdev->vpaths[vp_idx].fifo);
2388 vdev->vxge_entries[intr_cnt].arg =
2389 &vdev->vpaths[vp_idx].fifo;
2390 irq_req = 1;
2391 break;
2392 case 1:
2393 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2394 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2395 vdev->ndev->name,
2396 vdev->entries[intr_cnt].entry,
2397 pci_fun, vp_idx);
2398 ret = request_irq(
2399 vdev->entries[intr_cnt].vector,
2400 vxge_rx_msix_napi_handle,
2401 0,
2402 vdev->desc[intr_cnt],
2403 &vdev->vpaths[vp_idx].ring);
2404 vdev->vxge_entries[intr_cnt].arg =
2405 &vdev->vpaths[vp_idx].ring;
2406 irq_req = 1;
2407 break;
2408 }
2409
2410 if (ret) {
2411 vxge_debug_init(VXGE_ERR,
2412 "%s: MSIX - %d Registration failed",
2413 vdev->ndev->name, intr_cnt);
2414 vxge_rem_msix_isr(vdev);
2415 vdev->config.intr_type = INTA;
2416 vxge_debug_init(VXGE_ERR,
2417 "%s: Defaulting to INTA"
2418 , vdev->ndev->name);
2419 goto INTA_MODE;
2420 }
2421
2422 if (irq_req) {
2423 /* We requested for this msix interrupt */
2424 vdev->vxge_entries[intr_cnt].in_use = 1;
2425 msix_idx += vdev->vpaths[vp_idx].device_id *
2426 VXGE_HW_VPATH_MSIX_ACTIVE;
2427 vxge_hw_vpath_msix_unmask(
2428 vdev->vpaths[vp_idx].handle,
2429 msix_idx);
2430 intr_cnt++;
2431 }
2432
2433 /* Point to next vpath handler */
2434 if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2435 (vp_idx < (vdev->no_of_vpath - 1)))
2436 vp_idx++;
2437 }
2438
2439 intr_cnt = vdev->no_of_vpath * 2;
2440 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2441 "%s:vxge:MSI-X %d - Alarm - fn:%d",
2442 vdev->ndev->name,
2443 vdev->entries[intr_cnt].entry,
2444 pci_fun);
2445 /* For Alarm interrupts */
2446 ret = request_irq(vdev->entries[intr_cnt].vector,
2447 vxge_alarm_msix_handle, 0,
2448 vdev->desc[intr_cnt],
2449 &vdev->vpaths[0]);
2450 if (ret) {
2451 vxge_debug_init(VXGE_ERR,
2452 "%s: MSIX - %d Registration failed",
2453 vdev->ndev->name, intr_cnt);
2454 vxge_rem_msix_isr(vdev);
2455 vdev->config.intr_type = INTA;
2456 vxge_debug_init(VXGE_ERR,
2457 "%s: Defaulting to INTA",
2458 vdev->ndev->name);
2459 goto INTA_MODE;
2460 }
2461
2462 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2463 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2464 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2465 msix_idx);
2466 vdev->vxge_entries[intr_cnt].in_use = 1;
2467 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2468 }
2469 INTA_MODE:
2470 #endif
2471
2472 if (vdev->config.intr_type == INTA) {
2473 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2474 "%s:vxge:INTA", vdev->ndev->name);
2475 vxge_hw_device_set_intr_type(vdev->devh,
2476 VXGE_HW_INTR_MODE_IRQLINE);
2477 vxge_hw_vpath_tti_ci_set(vdev->devh,
2478 vdev->vpaths[0].device_id);
2479 ret = request_irq((int) vdev->pdev->irq,
2480 vxge_isr_napi,
2481 IRQF_SHARED, vdev->desc[0], vdev);
2482 if (ret) {
2483 vxge_debug_init(VXGE_ERR,
2484 "%s %s-%d: ISR registration failed",
2485 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2486 return -ENODEV;
2487 }
2488 vxge_debug_init(VXGE_TRACE,
2489 "new %s-%d line allocated",
2490 "IRQ", vdev->pdev->irq);
2491 }
2492
2493 return VXGE_HW_OK;
2494 }
2495
2496 static void vxge_poll_vp_reset(unsigned long data)
2497 {
2498 struct vxgedev *vdev = (struct vxgedev *)data;
2499 int i, j = 0;
2500
2501 for (i = 0; i < vdev->no_of_vpath; i++) {
2502 if (test_bit(i, &vdev->vp_reset)) {
2503 vxge_reset_vpath(vdev, i);
2504 j++;
2505 }
2506 }
2507 if (j && (vdev->config.intr_type != MSI_X)) {
2508 vxge_hw_device_unmask_all(vdev->devh);
2509 vxge_hw_device_flush_io(vdev->devh);
2510 }
2511
2512 mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2513 }
2514
2515 static void vxge_poll_vp_lockup(unsigned long data)
2516 {
2517 struct vxgedev *vdev = (struct vxgedev *)data;
2518 enum vxge_hw_status status = VXGE_HW_OK;
2519 struct vxge_vpath *vpath;
2520 struct vxge_ring *ring;
2521 int i;
2522
2523 for (i = 0; i < vdev->no_of_vpath; i++) {
2524 ring = &vdev->vpaths[i].ring;
2525 /* Did this vpath received any packets */
2526 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2527 status = vxge_hw_vpath_check_leak(ring->handle);
2528
2529 /* Did it received any packets last time */
2530 if ((VXGE_HW_FAIL == status) &&
2531 (VXGE_HW_FAIL == ring->last_status)) {
2532
2533 /* schedule vpath reset */
2534 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2535 vpath = &vdev->vpaths[i];
2536
2537 /* disable interrupts for this vpath */
2538 vxge_vpath_intr_disable(vdev, i);
2539
2540 /* stop the queue for this vpath */
2541 netif_tx_stop_queue(vpath->fifo.txq);
2542 continue;
2543 }
2544 }
2545 }
2546 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2547 ring->last_status = status;
2548 }
2549
2550 /* Check every 1 milli second */
2551 mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2552 }
2553
2554 /**
2555 * vxge_open
2556 * @dev: pointer to the device structure.
2557 *
2558 * This function is the open entry point of the driver. It mainly calls a
2559 * function to allocate Rx buffers and inserts them into the buffer
2560 * descriptors and then enables the Rx part of the NIC.
2561 * Return value: '0' on success and an appropriate (-)ve integer as
2562 * defined in errno.h file on failure.
2563 */
2564 static int vxge_open(struct net_device *dev)
2565 {
2566 enum vxge_hw_status status;
2567 struct vxgedev *vdev;
2568 struct __vxge_hw_device *hldev;
2569 struct vxge_vpath *vpath;
2570 int ret = 0;
2571 int i;
2572 u64 val64, function_mode;
2573
2574 vxge_debug_entryexit(VXGE_TRACE,
2575 "%s: %s:%d", dev->name, __func__, __LINE__);
2576
2577 vdev = netdev_priv(dev);
2578 hldev = pci_get_drvdata(vdev->pdev);
2579 function_mode = vdev->config.device_hw_info.function_mode;
2580
2581 /* make sure you have link off by default every time Nic is
2582 * initialized */
2583 netif_carrier_off(dev);
2584
2585 /* Open VPATHs */
2586 status = vxge_open_vpaths(vdev);
2587 if (status != VXGE_HW_OK) {
2588 vxge_debug_init(VXGE_ERR,
2589 "%s: fatal: Vpath open failed", vdev->ndev->name);
2590 ret = -EPERM;
2591 goto out0;
2592 }
2593
2594 vdev->mtu = dev->mtu;
2595
2596 status = vxge_add_isr(vdev);
2597 if (status != VXGE_HW_OK) {
2598 vxge_debug_init(VXGE_ERR,
2599 "%s: fatal: ISR add failed", dev->name);
2600 ret = -EPERM;
2601 goto out1;
2602 }
2603
2604 if (vdev->config.intr_type != MSI_X) {
2605 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2606 vdev->config.napi_weight);
2607 napi_enable(&vdev->napi);
2608 for (i = 0; i < vdev->no_of_vpath; i++) {
2609 vpath = &vdev->vpaths[i];
2610 vpath->ring.napi_p = &vdev->napi;
2611 }
2612 } else {
2613 for (i = 0; i < vdev->no_of_vpath; i++) {
2614 vpath = &vdev->vpaths[i];
2615 netif_napi_add(dev, &vpath->ring.napi,
2616 vxge_poll_msix, vdev->config.napi_weight);
2617 napi_enable(&vpath->ring.napi);
2618 vpath->ring.napi_p = &vpath->ring.napi;
2619 }
2620 }
2621
2622 /* configure RTH */
2623 if (vdev->config.rth_steering) {
2624 status = vxge_rth_configure(vdev);
2625 if (status != VXGE_HW_OK) {
2626 vxge_debug_init(VXGE_ERR,
2627 "%s: fatal: RTH configuration failed",
2628 dev->name);
2629 ret = -EPERM;
2630 goto out2;
2631 }
2632 }
2633 printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2634 hldev->config.rth_en ? "enabled" : "disabled");
2635
2636 for (i = 0; i < vdev->no_of_vpath; i++) {
2637 vpath = &vdev->vpaths[i];
2638
2639 /* set initial mtu before enabling the device */
2640 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2641 if (status != VXGE_HW_OK) {
2642 vxge_debug_init(VXGE_ERR,
2643 "%s: fatal: can not set new MTU", dev->name);
2644 ret = -EPERM;
2645 goto out2;
2646 }
2647 }
2648
2649 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2650 vxge_debug_init(vdev->level_trace,
2651 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2652 VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2653
2654 /* Restore the DA, VID table and also multicast and promiscuous mode
2655 * states
2656 */
2657 if (vdev->all_multi_flg) {
2658 for (i = 0; i < vdev->no_of_vpath; i++) {
2659 vpath = &vdev->vpaths[i];
2660 vxge_restore_vpath_mac_addr(vpath);
2661 vxge_restore_vpath_vid_table(vpath);
2662
2663 status = vxge_hw_vpath_mcast_enable(vpath->handle);
2664 if (status != VXGE_HW_OK)
2665 vxge_debug_init(VXGE_ERR,
2666 "%s:%d Enabling multicast failed",
2667 __func__, __LINE__);
2668 }
2669 }
2670
2671 /* Enable vpath to sniff all unicast/multicast traffic that not
2672 * addressed to them. We allow promiscous mode for PF only
2673 */
2674
2675 val64 = 0;
2676 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2677 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2678
2679 vxge_hw_mgmt_reg_write(vdev->devh,
2680 vxge_hw_mgmt_reg_type_mrpcim,
2681 0,
2682 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2683 rxmac_authorize_all_addr),
2684 val64);
2685
2686 vxge_hw_mgmt_reg_write(vdev->devh,
2687 vxge_hw_mgmt_reg_type_mrpcim,
2688 0,
2689 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2690 rxmac_authorize_all_vid),
2691 val64);
2692
2693 vxge_set_multicast(dev);
2694
2695 /* Enabling Bcast and mcast for all vpath */
2696 for (i = 0; i < vdev->no_of_vpath; i++) {
2697 vpath = &vdev->vpaths[i];
2698 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2699 if (status != VXGE_HW_OK)
2700 vxge_debug_init(VXGE_ERR,
2701 "%s : Can not enable bcast for vpath "
2702 "id %d", dev->name, i);
2703 if (vdev->config.addr_learn_en) {
2704 status = vxge_hw_vpath_mcast_enable(vpath->handle);
2705 if (status != VXGE_HW_OK)
2706 vxge_debug_init(VXGE_ERR,
2707 "%s : Can not enable mcast for vpath "
2708 "id %d", dev->name, i);
2709 }
2710 }
2711
2712 vxge_hw_device_setpause_data(vdev->devh, 0,
2713 vdev->config.tx_pause_enable,
2714 vdev->config.rx_pause_enable);
2715
2716 if (vdev->vp_reset_timer.function == NULL)
2717 vxge_os_timer(vdev->vp_reset_timer,
2718 vxge_poll_vp_reset, vdev, (HZ/2));
2719
2720 /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2721 if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2722 vxge_os_timer(vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2723 HZ / 2);
2724
2725 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2726
2727 smp_wmb();
2728
2729 if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2730 netif_carrier_on(vdev->ndev);
2731 netdev_notice(vdev->ndev, "Link Up\n");
2732 vdev->stats.link_up++;
2733 }
2734
2735 vxge_hw_device_intr_enable(vdev->devh);
2736
2737 smp_wmb();
2738
2739 for (i = 0; i < vdev->no_of_vpath; i++) {
2740 vpath = &vdev->vpaths[i];
2741
2742 vxge_hw_vpath_enable(vpath->handle);
2743 smp_wmb();
2744 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2745 }
2746
2747 netif_tx_start_all_queues(vdev->ndev);
2748 goto out0;
2749
2750 out2:
2751 vxge_rem_isr(vdev);
2752
2753 /* Disable napi */
2754 if (vdev->config.intr_type != MSI_X)
2755 napi_disable(&vdev->napi);
2756 else {
2757 for (i = 0; i < vdev->no_of_vpath; i++)
2758 napi_disable(&vdev->vpaths[i].ring.napi);
2759 }
2760
2761 out1:
2762 vxge_close_vpaths(vdev, 0);
2763 out0:
2764 vxge_debug_entryexit(VXGE_TRACE,
2765 "%s: %s:%d Exiting...",
2766 dev->name, __func__, __LINE__);
2767 return ret;
2768 }
2769
2770 /* Loop throught the mac address list and delete all the entries */
2771 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2772 {
2773
2774 struct list_head *entry, *next;
2775 if (list_empty(&vpath->mac_addr_list))
2776 return;
2777
2778 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2779 list_del(entry);
2780 kfree((struct vxge_mac_addrs *)entry);
2781 }
2782 }
2783
2784 static void vxge_napi_del_all(struct vxgedev *vdev)
2785 {
2786 int i;
2787 if (vdev->config.intr_type != MSI_X)
2788 netif_napi_del(&vdev->napi);
2789 else {
2790 for (i = 0; i < vdev->no_of_vpath; i++)
2791 netif_napi_del(&vdev->vpaths[i].ring.napi);
2792 }
2793 }
2794
2795 static int do_vxge_close(struct net_device *dev, int do_io)
2796 {
2797 enum vxge_hw_status status;
2798 struct vxgedev *vdev;
2799 struct __vxge_hw_device *hldev;
2800 int i;
2801 u64 val64, vpath_vector;
2802 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2803 dev->name, __func__, __LINE__);
2804
2805 vdev = netdev_priv(dev);
2806 hldev = pci_get_drvdata(vdev->pdev);
2807
2808 if (unlikely(!is_vxge_card_up(vdev)))
2809 return 0;
2810
2811 /* If vxge_handle_crit_err task is executing,
2812 * wait till it completes. */
2813 while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2814 msleep(50);
2815
2816 if (do_io) {
2817 /* Put the vpath back in normal mode */
2818 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2819 status = vxge_hw_mgmt_reg_read(vdev->devh,
2820 vxge_hw_mgmt_reg_type_mrpcim,
2821 0,
2822 (ulong)offsetof(
2823 struct vxge_hw_mrpcim_reg,
2824 rts_mgr_cbasin_cfg),
2825 &val64);
2826 if (status == VXGE_HW_OK) {
2827 val64 &= ~vpath_vector;
2828 status = vxge_hw_mgmt_reg_write(vdev->devh,
2829 vxge_hw_mgmt_reg_type_mrpcim,
2830 0,
2831 (ulong)offsetof(
2832 struct vxge_hw_mrpcim_reg,
2833 rts_mgr_cbasin_cfg),
2834 val64);
2835 }
2836
2837 /* Remove the function 0 from promiscous mode */
2838 vxge_hw_mgmt_reg_write(vdev->devh,
2839 vxge_hw_mgmt_reg_type_mrpcim,
2840 0,
2841 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2842 rxmac_authorize_all_addr),
2843 0);
2844
2845 vxge_hw_mgmt_reg_write(vdev->devh,
2846 vxge_hw_mgmt_reg_type_mrpcim,
2847 0,
2848 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2849 rxmac_authorize_all_vid),
2850 0);
2851
2852 smp_wmb();
2853 }
2854
2855 if (vdev->titan1)
2856 del_timer_sync(&vdev->vp_lockup_timer);
2857
2858 del_timer_sync(&vdev->vp_reset_timer);
2859
2860 if (do_io)
2861 vxge_hw_device_wait_receive_idle(hldev);
2862
2863 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2864
2865 /* Disable napi */
2866 if (vdev->config.intr_type != MSI_X)
2867 napi_disable(&vdev->napi);
2868 else {
2869 for (i = 0; i < vdev->no_of_vpath; i++)
2870 napi_disable(&vdev->vpaths[i].ring.napi);
2871 }
2872
2873 netif_carrier_off(vdev->ndev);
2874 netdev_notice(vdev->ndev, "Link Down\n");
2875 netif_tx_stop_all_queues(vdev->ndev);
2876
2877 /* Note that at this point xmit() is stopped by upper layer */
2878 if (do_io)
2879 vxge_hw_device_intr_disable(vdev->devh);
2880
2881 vxge_rem_isr(vdev);
2882
2883 vxge_napi_del_all(vdev);
2884
2885 if (do_io)
2886 vxge_reset_all_vpaths(vdev);
2887
2888 vxge_close_vpaths(vdev, 0);
2889
2890 vxge_debug_entryexit(VXGE_TRACE,
2891 "%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
2892
2893 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2894
2895 return 0;
2896 }
2897
2898 /**
2899 * vxge_close
2900 * @dev: device pointer.
2901 *
2902 * This is the stop entry point of the driver. It needs to undo exactly
2903 * whatever was done by the open entry point, thus it's usually referred to
2904 * as the close function.Among other things this function mainly stops the
2905 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2906 * Return value: '0' on success and an appropriate (-)ve integer as
2907 * defined in errno.h file on failure.
2908 */
2909 static int vxge_close(struct net_device *dev)
2910 {
2911 do_vxge_close(dev, 1);
2912 return 0;
2913 }
2914
2915 /**
2916 * vxge_change_mtu
2917 * @dev: net device pointer.
2918 * @new_mtu :the new MTU size for the device.
2919 *
2920 * A driver entry point to change MTU size for the device. Before changing
2921 * the MTU the device must be stopped.
2922 */
2923 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2924 {
2925 struct vxgedev *vdev = netdev_priv(dev);
2926
2927 vxge_debug_entryexit(vdev->level_trace,
2928 "%s:%d", __func__, __LINE__);
2929 if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2930 vxge_debug_init(vdev->level_err,
2931 "%s: mtu size is invalid", dev->name);
2932 return -EPERM;
2933 }
2934
2935 /* check if device is down already */
2936 if (unlikely(!is_vxge_card_up(vdev))) {
2937 /* just store new value, will use later on open() */
2938 dev->mtu = new_mtu;
2939 vxge_debug_init(vdev->level_err,
2940 "%s", "device is down on MTU change");
2941 return 0;
2942 }
2943
2944 vxge_debug_init(vdev->level_trace,
2945 "trying to apply new MTU %d", new_mtu);
2946
2947 if (vxge_close(dev))
2948 return -EIO;
2949
2950 dev->mtu = new_mtu;
2951 vdev->mtu = new_mtu;
2952
2953 if (vxge_open(dev))
2954 return -EIO;
2955
2956 vxge_debug_init(vdev->level_trace,
2957 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2958
2959 vxge_debug_entryexit(vdev->level_trace,
2960 "%s:%d Exiting...", __func__, __LINE__);
2961
2962 return 0;
2963 }
2964
2965 /**
2966 * vxge_get_stats64
2967 * @dev: pointer to the device structure
2968 * @stats: pointer to struct rtnl_link_stats64
2969 *
2970 */
2971 static struct rtnl_link_stats64 *
2972 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
2973 {
2974 struct vxgedev *vdev = netdev_priv(dev);
2975 int k;
2976
2977 /* net_stats already zeroed by caller */
2978 for (k = 0; k < vdev->no_of_vpath; k++) {
2979 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2980 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2981 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2982 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2983 net_stats->rx_dropped += vdev->vpaths[k].ring.stats.rx_dropped;
2984 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2985 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2986 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2987 }
2988
2989 return net_stats;
2990 }
2991
2992 static enum vxge_hw_status vxge_timestamp_config(struct vxgedev *vdev,
2993 int enable)
2994 {
2995 enum vxge_hw_status status;
2996 u64 val64;
2997
2998 /* Timestamp is passed to the driver via the FCS, therefore we
2999 * must disable the FCS stripping by the adapter. Since this is
3000 * required for the driver to load (due to a hardware bug),
3001 * there is no need to do anything special here.
3002 */
3003 if (enable)
3004 val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3005 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3006 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3007 else
3008 val64 = 0;
3009
3010 status = vxge_hw_mgmt_reg_write(vdev->devh,
3011 vxge_hw_mgmt_reg_type_mrpcim,
3012 0,
3013 offsetof(struct vxge_hw_mrpcim_reg,
3014 xmac_timestamp),
3015 val64);
3016 vxge_hw_device_flush_io(vdev->devh);
3017 return status;
3018 }
3019
3020 static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
3021 {
3022 struct hwtstamp_config config;
3023 enum vxge_hw_status status;
3024 int i;
3025
3026 if (copy_from_user(&config, data, sizeof(config)))
3027 return -EFAULT;
3028
3029 /* reserved for future extensions */
3030 if (config.flags)
3031 return -EINVAL;
3032
3033 /* Transmit HW Timestamp not supported */
3034 switch (config.tx_type) {
3035 case HWTSTAMP_TX_OFF:
3036 break;
3037 case HWTSTAMP_TX_ON:
3038 default:
3039 return -ERANGE;
3040 }
3041
3042 switch (config.rx_filter) {
3043 case HWTSTAMP_FILTER_NONE:
3044 status = vxge_timestamp_config(vdev, 0);
3045 if (status != VXGE_HW_OK)
3046 return -EFAULT;
3047
3048 vdev->rx_hwts = 0;
3049 config.rx_filter = HWTSTAMP_FILTER_NONE;
3050 break;
3051
3052 case HWTSTAMP_FILTER_ALL:
3053 case HWTSTAMP_FILTER_SOME:
3054 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3055 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3056 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3057 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3058 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3059 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3060 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3061 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3062 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3063 case HWTSTAMP_FILTER_PTP_V2_EVENT:
3064 case HWTSTAMP_FILTER_PTP_V2_SYNC:
3065 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3066 status = vxge_timestamp_config(vdev, 1);
3067 if (status != VXGE_HW_OK)
3068 return -EFAULT;
3069
3070 vdev->rx_hwts = 1;
3071 config.rx_filter = HWTSTAMP_FILTER_ALL;
3072 break;
3073
3074 default:
3075 return -ERANGE;
3076 }
3077
3078 for (i = 0; i < vdev->no_of_vpath; i++)
3079 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3080
3081 if (copy_to_user(data, &config, sizeof(config)))
3082 return -EFAULT;
3083
3084 return 0;
3085 }
3086
3087 /**
3088 * vxge_ioctl
3089 * @dev: Device pointer.
3090 * @ifr: An IOCTL specific structure, that can contain a pointer to
3091 * a proprietary structure used to pass information to the driver.
3092 * @cmd: This is used to distinguish between the different commands that
3093 * can be passed to the IOCTL functions.
3094 *
3095 * Entry point for the Ioctl.
3096 */
3097 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3098 {
3099 struct vxgedev *vdev = netdev_priv(dev);
3100 int ret;
3101
3102 switch (cmd) {
3103 case SIOCSHWTSTAMP:
3104 ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data);
3105 if (ret)
3106 return ret;
3107 break;
3108 default:
3109 return -EOPNOTSUPP;
3110 }
3111
3112 return 0;
3113 }
3114
3115 /**
3116 * vxge_tx_watchdog
3117 * @dev: pointer to net device structure
3118 *
3119 * Watchdog for transmit side.
3120 * This function is triggered if the Tx Queue is stopped
3121 * for a pre-defined amount of time when the Interface is still up.
3122 */
3123 static void vxge_tx_watchdog(struct net_device *dev)
3124 {
3125 struct vxgedev *vdev;
3126
3127 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3128
3129 vdev = netdev_priv(dev);
3130
3131 vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3132
3133 schedule_work(&vdev->reset_task);
3134 vxge_debug_entryexit(VXGE_TRACE,
3135 "%s:%d Exiting...", __func__, __LINE__);
3136 }
3137
3138 /**
3139 * vxge_vlan_rx_register
3140 * @dev: net device pointer.
3141 * @grp: vlan group
3142 *
3143 * Vlan group registration
3144 */
3145 static void
3146 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3147 {
3148 struct vxgedev *vdev;
3149 struct vxge_vpath *vpath;
3150 int vp;
3151 u64 vid;
3152 enum vxge_hw_status status;
3153 int i;
3154
3155 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3156
3157 vdev = netdev_priv(dev);
3158
3159 vpath = &vdev->vpaths[0];
3160 if ((NULL == grp) && (vpath->is_open)) {
3161 /* Get the first vlan */
3162 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3163
3164 while (status == VXGE_HW_OK) {
3165
3166 /* Delete this vlan from the vid table */
3167 for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3168 vpath = &vdev->vpaths[vp];
3169 if (!vpath->is_open)
3170 continue;
3171
3172 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3173 }
3174
3175 /* Get the next vlan to be deleted */
3176 vpath = &vdev->vpaths[0];
3177 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3178 }
3179 }
3180
3181 vdev->vlgrp = grp;
3182
3183 for (i = 0; i < vdev->no_of_vpath; i++) {
3184 if (vdev->vpaths[i].is_configured)
3185 vdev->vpaths[i].ring.vlgrp = grp;
3186 }
3187
3188 vxge_debug_entryexit(VXGE_TRACE,
3189 "%s:%d Exiting...", __func__, __LINE__);
3190 }
3191
3192 /**
3193 * vxge_vlan_rx_add_vid
3194 * @dev: net device pointer.
3195 * @vid: vid
3196 *
3197 * Add the vlan id to the devices vlan id table
3198 */
3199 static void
3200 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3201 {
3202 struct vxgedev *vdev;
3203 struct vxge_vpath *vpath;
3204 int vp_id;
3205
3206 vdev = netdev_priv(dev);
3207
3208 /* Add these vlan to the vid table */
3209 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3210 vpath = &vdev->vpaths[vp_id];
3211 if (!vpath->is_open)
3212 continue;
3213 vxge_hw_vpath_vid_add(vpath->handle, vid);
3214 }
3215 }
3216
3217 /**
3218 * vxge_vlan_rx_add_vid
3219 * @dev: net device pointer.
3220 * @vid: vid
3221 *
3222 * Remove the vlan id from the device's vlan id table
3223 */
3224 static void
3225 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3226 {
3227 struct vxgedev *vdev;
3228 struct vxge_vpath *vpath;
3229 int vp_id;
3230
3231 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3232
3233 vdev = netdev_priv(dev);
3234
3235 vlan_group_set_device(vdev->vlgrp, vid, NULL);
3236
3237 /* Delete this vlan from the vid table */
3238 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3239 vpath = &vdev->vpaths[vp_id];
3240 if (!vpath->is_open)
3241 continue;
3242 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3243 }
3244 vxge_debug_entryexit(VXGE_TRACE,
3245 "%s:%d Exiting...", __func__, __LINE__);
3246 }
3247
3248 static const struct net_device_ops vxge_netdev_ops = {
3249 .ndo_open = vxge_open,
3250 .ndo_stop = vxge_close,
3251 .ndo_get_stats64 = vxge_get_stats64,
3252 .ndo_start_xmit = vxge_xmit,
3253 .ndo_validate_addr = eth_validate_addr,
3254 .ndo_set_multicast_list = vxge_set_multicast,
3255 .ndo_do_ioctl = vxge_ioctl,
3256 .ndo_set_mac_address = vxge_set_mac_addr,
3257 .ndo_change_mtu = vxge_change_mtu,
3258 .ndo_vlan_rx_register = vxge_vlan_rx_register,
3259 .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid,
3260 .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid,
3261 .ndo_tx_timeout = vxge_tx_watchdog,
3262 #ifdef CONFIG_NET_POLL_CONTROLLER
3263 .ndo_poll_controller = vxge_netpoll,
3264 #endif
3265 };
3266
3267 static int __devinit vxge_device_revision(struct vxgedev *vdev)
3268 {
3269 int ret;
3270 u8 revision;
3271
3272 ret = pci_read_config_byte(vdev->pdev, PCI_REVISION_ID, &revision);
3273 if (ret)
3274 return -EIO;
3275
3276 vdev->titan1 = (revision == VXGE_HW_TITAN1_PCI_REVISION);
3277 return 0;
3278 }
3279
3280 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3281 struct vxge_config *config,
3282 int high_dma, int no_of_vpath,
3283 struct vxgedev **vdev_out)
3284 {
3285 struct net_device *ndev;
3286 enum vxge_hw_status status = VXGE_HW_OK;
3287 struct vxgedev *vdev;
3288 int ret = 0, no_of_queue = 1;
3289 u64 stat;
3290
3291 *vdev_out = NULL;
3292 if (config->tx_steering_type)
3293 no_of_queue = no_of_vpath;
3294
3295 ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3296 no_of_queue);
3297 if (ndev == NULL) {
3298 vxge_debug_init(
3299 vxge_hw_device_trace_level_get(hldev),
3300 "%s : device allocation failed", __func__);
3301 ret = -ENODEV;
3302 goto _out0;
3303 }
3304
3305 vxge_debug_entryexit(
3306 vxge_hw_device_trace_level_get(hldev),
3307 "%s: %s:%d Entering...",
3308 ndev->name, __func__, __LINE__);
3309
3310 vdev = netdev_priv(ndev);
3311 memset(vdev, 0, sizeof(struct vxgedev));
3312
3313 vdev->ndev = ndev;
3314 vdev->devh = hldev;
3315 vdev->pdev = hldev->pdev;
3316 memcpy(&vdev->config, config, sizeof(struct vxge_config));
3317 vdev->rx_csum = 1; /* Enable Rx CSUM by default. */
3318 vdev->rx_hwts = 0;
3319
3320 ret = vxge_device_revision(vdev);
3321 if (ret < 0)
3322 goto _out1;
3323
3324 SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3325
3326 ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3327 NETIF_F_HW_VLAN_FILTER;
3328 /* Driver entry points */
3329 ndev->irq = vdev->pdev->irq;
3330 ndev->base_addr = (unsigned long) hldev->bar0;
3331
3332 ndev->netdev_ops = &vxge_netdev_ops;
3333
3334 ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3335 INIT_WORK(&vdev->reset_task, vxge_reset);
3336
3337 vxge_initialize_ethtool_ops(ndev);
3338
3339 if (vdev->config.rth_steering != NO_STEERING) {
3340 ndev->features |= NETIF_F_RXHASH;
3341 hldev->config.rth_en = VXGE_HW_RTH_ENABLE;
3342 }
3343
3344 /* Allocate memory for vpath */
3345 vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3346 no_of_vpath, GFP_KERNEL);
3347 if (!vdev->vpaths) {
3348 vxge_debug_init(VXGE_ERR,
3349 "%s: vpath memory allocation failed",
3350 vdev->ndev->name);
3351 ret = -ENODEV;
3352 goto _out1;
3353 }
3354
3355 ndev->features |= NETIF_F_SG;
3356
3357 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3358 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3359 "%s : checksuming enabled", __func__);
3360
3361 if (high_dma) {
3362 ndev->features |= NETIF_F_HIGHDMA;
3363 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3364 "%s : using High DMA", __func__);
3365 }
3366
3367 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3368
3369 if (vdev->config.gro_enable)
3370 ndev->features |= NETIF_F_GRO;
3371
3372 if (register_netdev(ndev)) {
3373 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3374 "%s: %s : device registration failed!",
3375 ndev->name, __func__);
3376 ret = -ENODEV;
3377 goto _out2;
3378 }
3379
3380 /* Set the factory defined MAC address initially */
3381 ndev->addr_len = ETH_ALEN;
3382
3383 /* Make Link state as off at this point, when the Link change
3384 * interrupt comes the state will be automatically changed to
3385 * the right state.
3386 */
3387 netif_carrier_off(ndev);
3388
3389 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3390 "%s: Ethernet device registered",
3391 ndev->name);
3392
3393 hldev->ndev = ndev;
3394 *vdev_out = vdev;
3395
3396 /* Resetting the Device stats */
3397 status = vxge_hw_mrpcim_stats_access(
3398 hldev,
3399 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3400 0,
3401 0,
3402 &stat);
3403
3404 if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3405 vxge_debug_init(
3406 vxge_hw_device_trace_level_get(hldev),
3407 "%s: device stats clear returns"
3408 "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3409
3410 vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3411 "%s: %s:%d Exiting...",
3412 ndev->name, __func__, __LINE__);
3413
3414 return ret;
3415 _out2:
3416 kfree(vdev->vpaths);
3417 _out1:
3418 free_netdev(ndev);
3419 _out0:
3420 return ret;
3421 }
3422
3423 /*
3424 * vxge_device_unregister
3425 *
3426 * This function will unregister and free network device
3427 */
3428 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3429 {
3430 struct vxgedev *vdev;
3431 struct net_device *dev;
3432 char buf[IFNAMSIZ];
3433
3434 dev = hldev->ndev;
3435 vdev = netdev_priv(dev);
3436
3437 vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3438 __func__, __LINE__);
3439
3440 strncpy(buf, dev->name, IFNAMSIZ);
3441
3442 /* in 2.6 will call stop() if device is up */
3443 unregister_netdev(dev);
3444
3445 flush_scheduled_work();
3446
3447 vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3448 buf);
3449 vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d Exiting...", buf,
3450 __func__, __LINE__);
3451 }
3452
3453 /*
3454 * vxge_callback_crit_err
3455 *
3456 * This function is called by the alarm handler in interrupt context.
3457 * Driver must analyze it based on the event type.
3458 */
3459 static void
3460 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3461 enum vxge_hw_event type, u64 vp_id)
3462 {
3463 struct net_device *dev = hldev->ndev;
3464 struct vxgedev *vdev = netdev_priv(dev);
3465 struct vxge_vpath *vpath = NULL;
3466 int vpath_idx;
3467
3468 vxge_debug_entryexit(vdev->level_trace,
3469 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3470
3471 /* Note: This event type should be used for device wide
3472 * indications only - Serious errors, Slot freeze and critical errors
3473 */
3474 vdev->cric_err_event = type;
3475
3476 for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3477 vpath = &vdev->vpaths[vpath_idx];
3478 if (vpath->device_id == vp_id)
3479 break;
3480 }
3481
3482 if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3483 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3484 vxge_debug_init(VXGE_ERR,
3485 "%s: Slot is frozen", vdev->ndev->name);
3486 } else if (type == VXGE_HW_EVENT_SERR) {
3487 vxge_debug_init(VXGE_ERR,
3488 "%s: Encountered Serious Error",
3489 vdev->ndev->name);
3490 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3491 vxge_debug_init(VXGE_ERR,
3492 "%s: Encountered Critical Error",
3493 vdev->ndev->name);
3494 }
3495
3496 if ((type == VXGE_HW_EVENT_SERR) ||
3497 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3498 if (unlikely(vdev->exec_mode))
3499 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3500 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3501 vxge_hw_device_mask_all(hldev);
3502 if (unlikely(vdev->exec_mode))
3503 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3504 } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3505 (type == VXGE_HW_EVENT_VPATH_ERR)) {
3506
3507 if (unlikely(vdev->exec_mode))
3508 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3509 else {
3510 /* check if this vpath is already set for reset */
3511 if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3512
3513 /* disable interrupts for this vpath */
3514 vxge_vpath_intr_disable(vdev, vpath_idx);
3515
3516 /* stop the queue for this vpath */
3517 netif_tx_stop_queue(vpath->fifo.txq);
3518 }
3519 }
3520 }
3521
3522 vxge_debug_entryexit(vdev->level_trace,
3523 "%s: %s:%d Exiting...",
3524 vdev->ndev->name, __func__, __LINE__);
3525 }
3526
3527 static void verify_bandwidth(void)
3528 {
3529 int i, band_width, total = 0, equal_priority = 0;
3530
3531 /* 1. If user enters 0 for some fifo, give equal priority to all */
3532 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3533 if (bw_percentage[i] == 0) {
3534 equal_priority = 1;
3535 break;
3536 }
3537 }
3538
3539 if (!equal_priority) {
3540 /* 2. If sum exceeds 100, give equal priority to all */
3541 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3542 if (bw_percentage[i] == 0xFF)
3543 break;
3544
3545 total += bw_percentage[i];
3546 if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3547 equal_priority = 1;
3548 break;
3549 }
3550 }
3551 }
3552
3553 if (!equal_priority) {
3554 /* Is all the bandwidth consumed? */
3555 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3556 if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3557 /* Split rest of bw equally among next VPs*/
3558 band_width =
3559 (VXGE_HW_VPATH_BANDWIDTH_MAX - total) /
3560 (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3561 if (band_width < 2) /* min of 2% */
3562 equal_priority = 1;
3563 else {
3564 for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3565 i++)
3566 bw_percentage[i] =
3567 band_width;
3568 }
3569 }
3570 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3571 equal_priority = 1;
3572 }
3573
3574 if (equal_priority) {
3575 vxge_debug_init(VXGE_ERR,
3576 "%s: Assigning equal bandwidth to all the vpaths",
3577 VXGE_DRIVER_NAME);
3578 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3579 VXGE_HW_MAX_VIRTUAL_PATHS;
3580 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3581 bw_percentage[i] = bw_percentage[0];
3582 }
3583 }
3584
3585 /*
3586 * Vpath configuration
3587 */
3588 static int __devinit vxge_config_vpaths(
3589 struct vxge_hw_device_config *device_config,
3590 u64 vpath_mask, struct vxge_config *config_param)
3591 {
3592 int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3593 u32 txdl_size, txdl_per_memblock;
3594
3595 temp = driver_config->vpath_per_dev;
3596 if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3597 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3598 /* No more CPU. Return vpath number as zero.*/
3599 if (driver_config->g_no_cpus == -1)
3600 return 0;
3601
3602 if (!driver_config->g_no_cpus)
3603 driver_config->g_no_cpus = num_online_cpus();
3604
3605 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3606 if (!driver_config->vpath_per_dev)
3607 driver_config->vpath_per_dev = 1;
3608
3609 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3610 if (!vxge_bVALn(vpath_mask, i, 1))
3611 continue;
3612 else
3613 default_no_vpath++;
3614 if (default_no_vpath < driver_config->vpath_per_dev)
3615 driver_config->vpath_per_dev = default_no_vpath;
3616
3617 driver_config->g_no_cpus = driver_config->g_no_cpus -
3618 (driver_config->vpath_per_dev * 2);
3619 if (driver_config->g_no_cpus <= 0)
3620 driver_config->g_no_cpus = -1;
3621 }
3622
3623 if (driver_config->vpath_per_dev == 1) {
3624 vxge_debug_ll_config(VXGE_TRACE,
3625 "%s: Disable tx and rx steering, "
3626 "as single vpath is configured", VXGE_DRIVER_NAME);
3627 config_param->rth_steering = NO_STEERING;
3628 config_param->tx_steering_type = NO_STEERING;
3629 device_config->rth_en = 0;
3630 }
3631
3632 /* configure bandwidth */
3633 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3634 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3635
3636 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3637 device_config->vp_config[i].vp_id = i;
3638 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3639 if (no_of_vpaths < driver_config->vpath_per_dev) {
3640 if (!vxge_bVALn(vpath_mask, i, 1)) {
3641 vxge_debug_ll_config(VXGE_TRACE,
3642 "%s: vpath: %d is not available",
3643 VXGE_DRIVER_NAME, i);
3644 continue;
3645 } else {
3646 vxge_debug_ll_config(VXGE_TRACE,
3647 "%s: vpath: %d available",
3648 VXGE_DRIVER_NAME, i);
3649 no_of_vpaths++;
3650 }
3651 } else {
3652 vxge_debug_ll_config(VXGE_TRACE,
3653 "%s: vpath: %d is not configured, "
3654 "max_config_vpath exceeded",
3655 VXGE_DRIVER_NAME, i);
3656 break;
3657 }
3658
3659 /* Configure Tx fifo's */
3660 device_config->vp_config[i].fifo.enable =
3661 VXGE_HW_FIFO_ENABLE;
3662 device_config->vp_config[i].fifo.max_frags =
3663 MAX_SKB_FRAGS + 1;
3664 device_config->vp_config[i].fifo.memblock_size =
3665 VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3666
3667 txdl_size = device_config->vp_config[i].fifo.max_frags *
3668 sizeof(struct vxge_hw_fifo_txd);
3669 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3670
3671 device_config->vp_config[i].fifo.fifo_blocks =
3672 ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3673
3674 device_config->vp_config[i].fifo.intr =
3675 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3676
3677 /* Configure tti properties */
3678 device_config->vp_config[i].tti.intr_enable =
3679 VXGE_HW_TIM_INTR_ENABLE;
3680
3681 device_config->vp_config[i].tti.btimer_val =
3682 (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3683
3684 device_config->vp_config[i].tti.timer_ac_en =
3685 VXGE_HW_TIM_TIMER_AC_ENABLE;
3686
3687 /* For msi-x with napi (each vector has a handler of its own) -
3688 * Set CI to OFF for all vpaths
3689 */
3690 device_config->vp_config[i].tti.timer_ci_en =
3691 VXGE_HW_TIM_TIMER_CI_DISABLE;
3692
3693 device_config->vp_config[i].tti.timer_ri_en =
3694 VXGE_HW_TIM_TIMER_RI_DISABLE;
3695
3696 device_config->vp_config[i].tti.util_sel =
3697 VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3698
3699 device_config->vp_config[i].tti.ltimer_val =
3700 (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3701
3702 device_config->vp_config[i].tti.rtimer_val =
3703 (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3704
3705 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3706 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3707 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3708 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3709 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3710 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3711 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3712
3713 /* Configure Rx rings */
3714 device_config->vp_config[i].ring.enable =
3715 VXGE_HW_RING_ENABLE;
3716
3717 device_config->vp_config[i].ring.ring_blocks =
3718 VXGE_HW_DEF_RING_BLOCKS;
3719
3720 device_config->vp_config[i].ring.buffer_mode =
3721 VXGE_HW_RING_RXD_BUFFER_MODE_1;
3722
3723 device_config->vp_config[i].ring.rxds_limit =
3724 VXGE_HW_DEF_RING_RXDS_LIMIT;
3725
3726 device_config->vp_config[i].ring.scatter_mode =
3727 VXGE_HW_RING_SCATTER_MODE_A;
3728
3729 /* Configure rti properties */
3730 device_config->vp_config[i].rti.intr_enable =
3731 VXGE_HW_TIM_INTR_ENABLE;
3732
3733 device_config->vp_config[i].rti.btimer_val =
3734 (VXGE_RTI_BTIMER_VAL * 1000)/272;
3735
3736 device_config->vp_config[i].rti.timer_ac_en =
3737 VXGE_HW_TIM_TIMER_AC_ENABLE;
3738
3739 device_config->vp_config[i].rti.timer_ci_en =
3740 VXGE_HW_TIM_TIMER_CI_DISABLE;
3741
3742 device_config->vp_config[i].rti.timer_ri_en =
3743 VXGE_HW_TIM_TIMER_RI_DISABLE;
3744
3745 device_config->vp_config[i].rti.util_sel =
3746 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3747
3748 device_config->vp_config[i].rti.urange_a =
3749 RTI_RX_URANGE_A;
3750 device_config->vp_config[i].rti.urange_b =
3751 RTI_RX_URANGE_B;
3752 device_config->vp_config[i].rti.urange_c =
3753 RTI_RX_URANGE_C;
3754 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3755 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3756 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3757 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3758
3759 device_config->vp_config[i].rti.rtimer_val =
3760 (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3761
3762 device_config->vp_config[i].rti.ltimer_val =
3763 (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3764
3765 device_config->vp_config[i].rpa_strip_vlan_tag =
3766 vlan_tag_strip;
3767 }
3768
3769 driver_config->vpath_per_dev = temp;
3770 return no_of_vpaths;
3771 }
3772
3773 /* initialize device configuratrions */
3774 static void __devinit vxge_device_config_init(
3775 struct vxge_hw_device_config *device_config,
3776 int *intr_type)
3777 {
3778 /* Used for CQRQ/SRQ. */
3779 device_config->dma_blockpool_initial =
3780 VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3781
3782 device_config->dma_blockpool_max =
3783 VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3784
3785 if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3786 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3787
3788 #ifndef CONFIG_PCI_MSI
3789 vxge_debug_init(VXGE_ERR,
3790 "%s: This Kernel does not support "
3791 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3792 *intr_type = INTA;
3793 #endif
3794
3795 /* Configure whether MSI-X or IRQL. */
3796 switch (*intr_type) {
3797 case INTA:
3798 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3799 break;
3800
3801 case MSI_X:
3802 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3803 break;
3804 }
3805
3806 /* Timer period between device poll */
3807 device_config->device_poll_millis = VXGE_TIMER_DELAY;
3808
3809 /* Configure mac based steering. */
3810 device_config->rts_mac_en = addr_learn_en;
3811
3812 /* Configure Vpaths */
3813 device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3814
3815 vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3816 __func__);
3817 vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3818 device_config->intr_mode);
3819 vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3820 device_config->device_poll_millis);
3821 vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3822 device_config->rth_en);
3823 vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3824 device_config->rth_it_type);
3825 }
3826
3827 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3828 {
3829 int i;
3830
3831 vxge_debug_init(VXGE_TRACE,
3832 "%s: %d Vpath(s) opened",
3833 vdev->ndev->name, vdev->no_of_vpath);
3834
3835 switch (vdev->config.intr_type) {
3836 case INTA:
3837 vxge_debug_init(VXGE_TRACE,
3838 "%s: Interrupt type INTA", vdev->ndev->name);
3839 break;
3840
3841 case MSI_X:
3842 vxge_debug_init(VXGE_TRACE,
3843 "%s: Interrupt type MSI-X", vdev->ndev->name);
3844 break;
3845 }
3846
3847 if (vdev->config.rth_steering) {
3848 vxge_debug_init(VXGE_TRACE,
3849 "%s: RTH steering enabled for TCP_IPV4",
3850 vdev->ndev->name);
3851 } else {
3852 vxge_debug_init(VXGE_TRACE,
3853 "%s: RTH steering disabled", vdev->ndev->name);
3854 }
3855
3856 switch (vdev->config.tx_steering_type) {
3857 case NO_STEERING:
3858 vxge_debug_init(VXGE_TRACE,
3859 "%s: Tx steering disabled", vdev->ndev->name);
3860 break;
3861 case TX_PRIORITY_STEERING:
3862 vxge_debug_init(VXGE_TRACE,
3863 "%s: Unsupported tx steering option",
3864 vdev->ndev->name);
3865 vxge_debug_init(VXGE_TRACE,
3866 "%s: Tx steering disabled", vdev->ndev->name);
3867 vdev->config.tx_steering_type = 0;
3868 break;
3869 case TX_VLAN_STEERING:
3870 vxge_debug_init(VXGE_TRACE,
3871 "%s: Unsupported tx steering option",
3872 vdev->ndev->name);
3873 vxge_debug_init(VXGE_TRACE,
3874 "%s: Tx steering disabled", vdev->ndev->name);
3875 vdev->config.tx_steering_type = 0;
3876 break;
3877 case TX_MULTIQ_STEERING:
3878 vxge_debug_init(VXGE_TRACE,
3879 "%s: Tx multiqueue steering enabled",
3880 vdev->ndev->name);
3881 break;
3882 case TX_PORT_STEERING:
3883 vxge_debug_init(VXGE_TRACE,
3884 "%s: Tx port steering enabled",
3885 vdev->ndev->name);
3886 break;
3887 default:
3888 vxge_debug_init(VXGE_ERR,
3889 "%s: Unsupported tx steering type",
3890 vdev->ndev->name);
3891 vxge_debug_init(VXGE_TRACE,
3892 "%s: Tx steering disabled", vdev->ndev->name);
3893 vdev->config.tx_steering_type = 0;
3894 }
3895
3896 if (vdev->config.gro_enable) {
3897 vxge_debug_init(VXGE_ERR,
3898 "%s: Generic receive offload enabled",
3899 vdev->ndev->name);
3900 } else
3901 vxge_debug_init(VXGE_TRACE,
3902 "%s: Generic receive offload disabled",
3903 vdev->ndev->name);
3904
3905 if (vdev->config.addr_learn_en)
3906 vxge_debug_init(VXGE_TRACE,
3907 "%s: MAC Address learning enabled", vdev->ndev->name);
3908
3909 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3910 if (!vxge_bVALn(vpath_mask, i, 1))
3911 continue;
3912 vxge_debug_ll_config(VXGE_TRACE,
3913 "%s: MTU size - %d", vdev->ndev->name,
3914 ((struct __vxge_hw_device *)(vdev->devh))->
3915 config.vp_config[i].mtu);
3916 vxge_debug_init(VXGE_TRACE,
3917 "%s: VLAN tag stripping %s", vdev->ndev->name,
3918 ((struct __vxge_hw_device *)(vdev->devh))->
3919 config.vp_config[i].rpa_strip_vlan_tag
3920 ? "Enabled" : "Disabled");
3921 vxge_debug_ll_config(VXGE_TRACE,
3922 "%s: Max frags : %d", vdev->ndev->name,
3923 ((struct __vxge_hw_device *)(vdev->devh))->
3924 config.vp_config[i].fifo.max_frags);
3925 break;
3926 }
3927 }
3928
3929 #ifdef CONFIG_PM
3930 /**
3931 * vxge_pm_suspend - vxge power management suspend entry point
3932 *
3933 */
3934 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3935 {
3936 return -ENOSYS;
3937 }
3938 /**
3939 * vxge_pm_resume - vxge power management resume entry point
3940 *
3941 */
3942 static int vxge_pm_resume(struct pci_dev *pdev)
3943 {
3944 return -ENOSYS;
3945 }
3946
3947 #endif
3948
3949 /**
3950 * vxge_io_error_detected - called when PCI error is detected
3951 * @pdev: Pointer to PCI device
3952 * @state: The current pci connection state
3953 *
3954 * This function is called after a PCI bus error affecting
3955 * this device has been detected.
3956 */
3957 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3958 pci_channel_state_t state)
3959 {
3960 struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
3961 struct net_device *netdev = hldev->ndev;
3962
3963 netif_device_detach(netdev);
3964
3965 if (state == pci_channel_io_perm_failure)
3966 return PCI_ERS_RESULT_DISCONNECT;
3967
3968 if (netif_running(netdev)) {
3969 /* Bring down the card, while avoiding PCI I/O */
3970 do_vxge_close(netdev, 0);
3971 }
3972
3973 pci_disable_device(pdev);
3974
3975 return PCI_ERS_RESULT_NEED_RESET;
3976 }
3977
3978 /**
3979 * vxge_io_slot_reset - called after the pci bus has been reset.
3980 * @pdev: Pointer to PCI device
3981 *
3982 * Restart the card from scratch, as if from a cold-boot.
3983 * At this point, the card has exprienced a hard reset,
3984 * followed by fixups by BIOS, and has its config space
3985 * set up identically to what it was at cold boot.
3986 */
3987 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3988 {
3989 struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
3990 struct net_device *netdev = hldev->ndev;
3991
3992 struct vxgedev *vdev = netdev_priv(netdev);
3993
3994 if (pci_enable_device(pdev)) {
3995 netdev_err(netdev, "Cannot re-enable device after reset\n");
3996 return PCI_ERS_RESULT_DISCONNECT;
3997 }
3998
3999 pci_set_master(pdev);
4000 do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4001
4002 return PCI_ERS_RESULT_RECOVERED;
4003 }
4004
4005 /**
4006 * vxge_io_resume - called when traffic can start flowing again.
4007 * @pdev: Pointer to PCI device
4008 *
4009 * This callback is called when the error recovery driver tells
4010 * us that its OK to resume normal operation.
4011 */
4012 static void vxge_io_resume(struct pci_dev *pdev)
4013 {
4014 struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4015 struct net_device *netdev = hldev->ndev;
4016
4017 if (netif_running(netdev)) {
4018 if (vxge_open(netdev)) {
4019 netdev_err(netdev,
4020 "Can't bring device back up after reset\n");
4021 return;
4022 }
4023 }
4024
4025 netif_device_attach(netdev);
4026 }
4027
4028 static inline u32 vxge_get_num_vfs(u64 function_mode)
4029 {
4030 u32 num_functions = 0;
4031
4032 switch (function_mode) {
4033 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4034 case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4035 num_functions = 8;
4036 break;
4037 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4038 num_functions = 1;
4039 break;
4040 case VXGE_HW_FUNCTION_MODE_SRIOV:
4041 case VXGE_HW_FUNCTION_MODE_MRIOV:
4042 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4043 num_functions = 17;
4044 break;
4045 case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4046 num_functions = 4;
4047 break;
4048 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4049 num_functions = 2;
4050 break;
4051 case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4052 num_functions = 8; /* TODO */
4053 break;
4054 }
4055 return num_functions;
4056 }
4057
4058 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4059 {
4060 struct __vxge_hw_device *hldev = vdev->devh;
4061 u32 maj, min, bld, cmaj, cmin, cbld;
4062 enum vxge_hw_status status;
4063 const struct firmware *fw;
4064 int ret;
4065
4066 ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4067 if (ret) {
4068 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4069 VXGE_DRIVER_NAME, fw_name);
4070 goto out;
4071 }
4072
4073 /* Load the new firmware onto the adapter */
4074 status = vxge_update_fw_image(hldev, fw->data, fw->size);
4075 if (status != VXGE_HW_OK) {
4076 vxge_debug_init(VXGE_ERR,
4077 "%s: FW image download to adapter failed '%s'.",
4078 VXGE_DRIVER_NAME, fw_name);
4079 ret = -EIO;
4080 goto out;
4081 }
4082
4083 /* Read the version of the new firmware */
4084 status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4085 if (status != VXGE_HW_OK) {
4086 vxge_debug_init(VXGE_ERR,
4087 "%s: Upgrade read version failed '%s'.",
4088 VXGE_DRIVER_NAME, fw_name);
4089 ret = -EIO;
4090 goto out;
4091 }
4092
4093 cmaj = vdev->config.device_hw_info.fw_version.major;
4094 cmin = vdev->config.device_hw_info.fw_version.minor;
4095 cbld = vdev->config.device_hw_info.fw_version.build;
4096 /* It's possible the version in /lib/firmware is not the latest version.
4097 * If so, we could get into a loop of trying to upgrade to the latest
4098 * and flashing the older version.
4099 */
4100 if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4101 !override) {
4102 ret = -EINVAL;
4103 goto out;
4104 }
4105
4106 printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4107 maj, min, bld);
4108
4109 /* Flash the adapter with the new firmware */
4110 status = vxge_hw_flash_fw(hldev);
4111 if (status != VXGE_HW_OK) {
4112 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4113 VXGE_DRIVER_NAME, fw_name);
4114 ret = -EIO;
4115 goto out;
4116 }
4117
4118 printk(KERN_NOTICE "Upgrade of firmware successful! Adapter must be "
4119 "hard reset before using, thus requiring a system reboot or a "
4120 "hotplug event.\n");
4121
4122 out:
4123 return ret;
4124 }
4125
4126 static int vxge_probe_fw_update(struct vxgedev *vdev)
4127 {
4128 u32 maj, min, bld;
4129 int ret, gpxe = 0;
4130 char *fw_name;
4131
4132 maj = vdev->config.device_hw_info.fw_version.major;
4133 min = vdev->config.device_hw_info.fw_version.minor;
4134 bld = vdev->config.device_hw_info.fw_version.build;
4135
4136 if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4137 return 0;
4138
4139 /* Ignore the build number when determining if the current firmware is
4140 * "too new" to load the driver
4141 */
4142 if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4143 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4144 "version, unable to load driver\n",
4145 VXGE_DRIVER_NAME);
4146 return -EINVAL;
4147 }
4148
4149 /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4150 * work with this driver.
4151 */
4152 if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4153 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4154 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4155 return -EINVAL;
4156 }
4157
4158 /* If file not specified, determine gPXE or not */
4159 if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4160 int i;
4161 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4162 if (vdev->devh->eprom_versions[i]) {
4163 gpxe = 1;
4164 break;
4165 }
4166 }
4167 if (gpxe)
4168 fw_name = "vxge/X3fw-pxe.ncf";
4169 else
4170 fw_name = "vxge/X3fw.ncf";
4171
4172 ret = vxge_fw_upgrade(vdev, fw_name, 0);
4173 /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4174 * probe, so ignore them
4175 */
4176 if (ret != -EINVAL && ret != -ENOENT)
4177 return -EIO;
4178 else
4179 ret = 0;
4180
4181 if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4182 VXGE_FW_VER(maj, min, 0)) {
4183 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4184 " be used with this driver.\n"
4185 "Please get the latest version from "
4186 "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE",
4187 VXGE_DRIVER_NAME, maj, min, bld);
4188 return -EINVAL;
4189 }
4190
4191 return ret;
4192 }
4193
4194 static int __devinit is_sriov_initialized(struct pci_dev *pdev)
4195 {
4196 int pos;
4197 u16 ctrl;
4198
4199 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4200 if (pos) {
4201 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4202 if (ctrl & PCI_SRIOV_CTRL_VFE)
4203 return 1;
4204 }
4205 return 0;
4206 }
4207
4208 /**
4209 * vxge_probe
4210 * @pdev : structure containing the PCI related information of the device.
4211 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4212 * Description:
4213 * This function is called when a new PCI device gets detected and initializes
4214 * it.
4215 * Return value:
4216 * returns 0 on success and negative on failure.
4217 *
4218 */
4219 static int __devinit
4220 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4221 {
4222 struct __vxge_hw_device *hldev;
4223 enum vxge_hw_status status;
4224 int ret;
4225 int high_dma = 0;
4226 u64 vpath_mask = 0;
4227 struct vxgedev *vdev;
4228 struct vxge_config *ll_config = NULL;
4229 struct vxge_hw_device_config *device_config = NULL;
4230 struct vxge_hw_device_attr attr;
4231 int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4232 u8 *macaddr;
4233 struct vxge_mac_addrs *entry;
4234 static int bus = -1, device = -1;
4235 u32 host_type;
4236 u8 new_device = 0;
4237 enum vxge_hw_status is_privileged;
4238 u32 function_mode;
4239 u32 num_vfs = 0;
4240
4241 vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4242 attr.pdev = pdev;
4243
4244 /* In SRIOV-17 mode, functions of the same adapter
4245 * can be deployed on different buses
4246 */
4247 if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4248 !pdev->is_virtfn)
4249 new_device = 1;
4250
4251 bus = pdev->bus->number;
4252 device = PCI_SLOT(pdev->devfn);
4253
4254 if (new_device) {
4255 if (driver_config->config_dev_cnt &&
4256 (driver_config->config_dev_cnt !=
4257 driver_config->total_dev_cnt))
4258 vxge_debug_init(VXGE_ERR,
4259 "%s: Configured %d of %d devices",
4260 VXGE_DRIVER_NAME,
4261 driver_config->config_dev_cnt,
4262 driver_config->total_dev_cnt);
4263 driver_config->config_dev_cnt = 0;
4264 driver_config->total_dev_cnt = 0;
4265 }
4266
4267 /* Now making the CPU based no of vpath calculation
4268 * applicable for individual functions as well.
4269 */
4270 driver_config->g_no_cpus = 0;
4271 driver_config->vpath_per_dev = max_config_vpath;
4272
4273 driver_config->total_dev_cnt++;
4274 if (++driver_config->config_dev_cnt > max_config_dev) {
4275 ret = 0;
4276 goto _exit0;
4277 }
4278
4279 device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4280 GFP_KERNEL);
4281 if (!device_config) {
4282 ret = -ENOMEM;
4283 vxge_debug_init(VXGE_ERR,
4284 "device_config : malloc failed %s %d",
4285 __FILE__, __LINE__);
4286 goto _exit0;
4287 }
4288
4289 ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4290 if (!ll_config) {
4291 ret = -ENOMEM;
4292 vxge_debug_init(VXGE_ERR,
4293 "device_config : malloc failed %s %d",
4294 __FILE__, __LINE__);
4295 goto _exit0;
4296 }
4297 ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4298 ll_config->intr_type = MSI_X;
4299 ll_config->napi_weight = NEW_NAPI_WEIGHT;
4300 ll_config->rth_steering = RTH_STEERING;
4301
4302 /* get the default configuration parameters */
4303 vxge_hw_device_config_default_get(device_config);
4304
4305 /* initialize configuration parameters */
4306 vxge_device_config_init(device_config, &ll_config->intr_type);
4307
4308 ret = pci_enable_device(pdev);
4309 if (ret) {
4310 vxge_debug_init(VXGE_ERR,
4311 "%s : can not enable PCI device", __func__);
4312 goto _exit0;
4313 }
4314
4315 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4316 vxge_debug_ll_config(VXGE_TRACE,
4317 "%s : using 64bit DMA", __func__);
4318
4319 high_dma = 1;
4320
4321 if (pci_set_consistent_dma_mask(pdev,
4322 DMA_BIT_MASK(64))) {
4323 vxge_debug_init(VXGE_ERR,
4324 "%s : unable to obtain 64bit DMA for "
4325 "consistent allocations", __func__);
4326 ret = -ENOMEM;
4327 goto _exit1;
4328 }
4329 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4330 vxge_debug_ll_config(VXGE_TRACE,
4331 "%s : using 32bit DMA", __func__);
4332 } else {
4333 ret = -ENOMEM;
4334 goto _exit1;
4335 }
4336
4337 if (pci_request_region(pdev, 0, VXGE_DRIVER_NAME)) {
4338 vxge_debug_init(VXGE_ERR,
4339 "%s : request regions failed", __func__);
4340 ret = -ENODEV;
4341 goto _exit1;
4342 }
4343
4344 pci_set_master(pdev);
4345
4346 attr.bar0 = pci_ioremap_bar(pdev, 0);
4347 if (!attr.bar0) {
4348 vxge_debug_init(VXGE_ERR,
4349 "%s : cannot remap io memory bar0", __func__);
4350 ret = -ENODEV;
4351 goto _exit2;
4352 }
4353 vxge_debug_ll_config(VXGE_TRACE,
4354 "pci ioremap bar0: %p:0x%llx",
4355 attr.bar0,
4356 (unsigned long long)pci_resource_start(pdev, 0));
4357
4358 status = vxge_hw_device_hw_info_get(attr.bar0,
4359 &ll_config->device_hw_info);
4360 if (status != VXGE_HW_OK) {
4361 vxge_debug_init(VXGE_ERR,
4362 "%s: Reading of hardware info failed."
4363 "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4364 ret = -EINVAL;
4365 goto _exit3;
4366 }
4367
4368 vpath_mask = ll_config->device_hw_info.vpath_mask;
4369 if (vpath_mask == 0) {
4370 vxge_debug_ll_config(VXGE_TRACE,
4371 "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4372 ret = -EINVAL;
4373 goto _exit3;
4374 }
4375
4376 vxge_debug_ll_config(VXGE_TRACE,
4377 "%s:%d Vpath mask = %llx", __func__, __LINE__,
4378 (unsigned long long)vpath_mask);
4379
4380 function_mode = ll_config->device_hw_info.function_mode;
4381 host_type = ll_config->device_hw_info.host_type;
4382 is_privileged = __vxge_hw_device_is_privilaged(host_type,
4383 ll_config->device_hw_info.func_id);
4384
4385 /* Check how many vpaths are available */
4386 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4387 if (!((vpath_mask) & vxge_mBIT(i)))
4388 continue;
4389 max_vpath_supported++;
4390 }
4391
4392 if (new_device)
4393 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4394
4395 /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4396 if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4397 (ll_config->intr_type != INTA)) {
4398 ret = pci_enable_sriov(pdev, num_vfs);
4399 if (ret)
4400 vxge_debug_ll_config(VXGE_ERR,
4401 "Failed in enabling SRIOV mode: %d\n", ret);
4402 /* No need to fail out, as an error here is non-fatal */
4403 }
4404
4405 /*
4406 * Configure vpaths and get driver configured number of vpaths
4407 * which is less than or equal to the maximum vpaths per function.
4408 */
4409 no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4410 if (!no_of_vpath) {
4411 vxge_debug_ll_config(VXGE_ERR,
4412 "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4413 ret = 0;
4414 goto _exit3;
4415 }
4416
4417 /* Setting driver callbacks */
4418 attr.uld_callbacks.link_up = vxge_callback_link_up;
4419 attr.uld_callbacks.link_down = vxge_callback_link_down;
4420 attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4421
4422 status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4423 if (status != VXGE_HW_OK) {
4424 vxge_debug_init(VXGE_ERR,
4425 "Failed to initialize device (%d)", status);
4426 ret = -EINVAL;
4427 goto _exit3;
4428 }
4429
4430 if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4431 ll_config->device_hw_info.fw_version.minor,
4432 ll_config->device_hw_info.fw_version.build) >=
4433 VXGE_EPROM_FW_VER) {
4434 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4435
4436 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4437 if (status != VXGE_HW_OK) {
4438 vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4439 VXGE_DRIVER_NAME);
4440 /* This is a non-fatal error, continue */
4441 }
4442
4443 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4444 hldev->eprom_versions[i] = img[i].version;
4445 if (!img[i].is_valid)
4446 break;
4447 vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4448 "%d.%d.%d.%d\n", VXGE_DRIVER_NAME, i,
4449 VXGE_EPROM_IMG_MAJOR(img[i].version),
4450 VXGE_EPROM_IMG_MINOR(img[i].version),
4451 VXGE_EPROM_IMG_FIX(img[i].version),
4452 VXGE_EPROM_IMG_BUILD(img[i].version));
4453 }
4454 }
4455
4456 /* if FCS stripping is not disabled in MAC fail driver load */
4457 status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4458 if (status != VXGE_HW_OK) {
4459 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4460 " failing driver load", VXGE_DRIVER_NAME);
4461 ret = -EINVAL;
4462 goto _exit4;
4463 }
4464
4465 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4466
4467 /* set private device info */
4468 pci_set_drvdata(pdev, hldev);
4469
4470 ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4471 ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4472 ll_config->addr_learn_en = addr_learn_en;
4473 ll_config->rth_algorithm = RTH_ALG_JENKINS;
4474 ll_config->rth_hash_type_tcpipv4 = 1;
4475 ll_config->rth_hash_type_ipv4 = 0;
4476 ll_config->rth_hash_type_tcpipv6 = 0;
4477 ll_config->rth_hash_type_ipv6 = 0;
4478 ll_config->rth_hash_type_tcpipv6ex = 0;
4479 ll_config->rth_hash_type_ipv6ex = 0;
4480 ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4481 ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4482 ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4483
4484 ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4485 &vdev);
4486 if (ret) {
4487 ret = -EINVAL;
4488 goto _exit4;
4489 }
4490
4491 ret = vxge_probe_fw_update(vdev);
4492 if (ret)
4493 goto _exit5;
4494
4495 vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4496 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4497 vxge_hw_device_trace_level_get(hldev));
4498
4499 /* set private HW device info */
4500 vdev->mtu = VXGE_HW_DEFAULT_MTU;
4501 vdev->bar0 = attr.bar0;
4502 vdev->max_vpath_supported = max_vpath_supported;
4503 vdev->no_of_vpath = no_of_vpath;
4504
4505 /* Virtual Path count */
4506 for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4507 if (!vxge_bVALn(vpath_mask, i, 1))
4508 continue;
4509 if (j >= vdev->no_of_vpath)
4510 break;
4511
4512 vdev->vpaths[j].is_configured = 1;
4513 vdev->vpaths[j].device_id = i;
4514 vdev->vpaths[j].ring.driver_id = j;
4515 vdev->vpaths[j].vdev = vdev;
4516 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4517 memcpy((u8 *)vdev->vpaths[j].macaddr,
4518 ll_config->device_hw_info.mac_addrs[i],
4519 ETH_ALEN);
4520
4521 /* Initialize the mac address list header */
4522 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4523
4524 vdev->vpaths[j].mac_addr_cnt = 0;
4525 vdev->vpaths[j].mcast_addr_cnt = 0;
4526 j++;
4527 }
4528 vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4529 vdev->max_config_port = max_config_port;
4530
4531 vdev->vlan_tag_strip = vlan_tag_strip;
4532
4533 /* map the hashing selector table to the configured vpaths */
4534 for (i = 0; i < vdev->no_of_vpath; i++)
4535 vdev->vpath_selector[i] = vpath_selector[i];
4536
4537 macaddr = (u8 *)vdev->vpaths[0].macaddr;
4538
4539 ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4540 ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4541 ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4542
4543 vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4544 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4545
4546 vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4547 vdev->ndev->name, ll_config->device_hw_info.part_number);
4548
4549 vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4550 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4551
4552 vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4553 vdev->ndev->name, macaddr);
4554
4555 vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4556 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4557
4558 vxge_debug_init(VXGE_TRACE,
4559 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4560 ll_config->device_hw_info.fw_version.version,
4561 ll_config->device_hw_info.fw_date.date);
4562
4563 if (new_device) {
4564 switch (ll_config->device_hw_info.function_mode) {
4565 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4566 vxge_debug_init(VXGE_TRACE,
4567 "%s: Single Function Mode Enabled", vdev->ndev->name);
4568 break;
4569 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4570 vxge_debug_init(VXGE_TRACE,
4571 "%s: Multi Function Mode Enabled", vdev->ndev->name);
4572 break;
4573 case VXGE_HW_FUNCTION_MODE_SRIOV:
4574 vxge_debug_init(VXGE_TRACE,
4575 "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4576 break;
4577 case VXGE_HW_FUNCTION_MODE_MRIOV:
4578 vxge_debug_init(VXGE_TRACE,
4579 "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4580 break;
4581 }
4582 }
4583
4584 vxge_print_parm(vdev, vpath_mask);
4585
4586 /* Store the fw version for ethttool option */
4587 strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4588 memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4589 memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4590
4591 /* Copy the station mac address to the list */
4592 for (i = 0; i < vdev->no_of_vpath; i++) {
4593 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4594 if (NULL == entry) {
4595 vxge_debug_init(VXGE_ERR,
4596 "%s: mac_addr_list : memory allocation failed",
4597 vdev->ndev->name);
4598 ret = -EPERM;
4599 goto _exit6;
4600 }
4601 macaddr = (u8 *)&entry->macaddr;
4602 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4603 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4604 vdev->vpaths[i].mac_addr_cnt = 1;
4605 }
4606
4607 kfree(device_config);
4608
4609 /*
4610 * INTA is shared in multi-function mode. This is unlike the INTA
4611 * implementation in MR mode, where each VH has its own INTA message.
4612 * - INTA is masked (disabled) as long as at least one function sets
4613 * its TITAN_MASK_ALL_INT.ALARM bit.
4614 * - INTA is unmasked (enabled) when all enabled functions have cleared
4615 * their own TITAN_MASK_ALL_INT.ALARM bit.
4616 * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4617 * Though this driver leaves the top level interrupts unmasked while
4618 * leaving the required module interrupt bits masked on exit, there
4619 * could be a rougue driver around that does not follow this procedure
4620 * resulting in a failure to generate interrupts. The following code is
4621 * present to prevent such a failure.
4622 */
4623
4624 if (ll_config->device_hw_info.function_mode ==
4625 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4626 if (vdev->config.intr_type == INTA)
4627 vxge_hw_device_unmask_all(hldev);
4628
4629 vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
4630 vdev->ndev->name, __func__, __LINE__);
4631
4632 vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4633 VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4634 vxge_hw_device_trace_level_get(hldev));
4635
4636 kfree(ll_config);
4637 return 0;
4638
4639 _exit6:
4640 for (i = 0; i < vdev->no_of_vpath; i++)
4641 vxge_free_mac_add_list(&vdev->vpaths[i]);
4642 _exit5:
4643 vxge_device_unregister(hldev);
4644 _exit4:
4645 pci_disable_sriov(pdev);
4646 vxge_hw_device_terminate(hldev);
4647 _exit3:
4648 iounmap(attr.bar0);
4649 _exit2:
4650 pci_release_region(pdev, 0);
4651 _exit1:
4652 pci_disable_device(pdev);
4653 _exit0:
4654 kfree(ll_config);
4655 kfree(device_config);
4656 driver_config->config_dev_cnt--;
4657 pci_set_drvdata(pdev, NULL);
4658 return ret;
4659 }
4660
4661 /**
4662 * vxge_rem_nic - Free the PCI device
4663 * @pdev: structure containing the PCI related information of the device.
4664 * Description: This function is called by the Pci subsystem to release a
4665 * PCI device and free up all resource held up by the device.
4666 */
4667 static void __devexit vxge_remove(struct pci_dev *pdev)
4668 {
4669 struct __vxge_hw_device *hldev;
4670 struct vxgedev *vdev = NULL;
4671 struct net_device *dev;
4672 int i = 0;
4673
4674 hldev = pci_get_drvdata(pdev);
4675
4676 if (hldev == NULL)
4677 return;
4678
4679 dev = hldev->ndev;
4680 vdev = netdev_priv(dev);
4681
4682 vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4683
4684 vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4685 __func__);
4686 vxge_device_unregister(hldev);
4687
4688 for (i = 0; i < vdev->no_of_vpath; i++) {
4689 vxge_free_mac_add_list(&vdev->vpaths[i]);
4690 vdev->vpaths[i].mcast_addr_cnt = 0;
4691 vdev->vpaths[i].mac_addr_cnt = 0;
4692 }
4693
4694 kfree(vdev->vpaths);
4695
4696 iounmap(vdev->bar0);
4697
4698 /* we are safe to free it now */
4699 free_netdev(dev);
4700
4701 vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4702 __func__, __LINE__);
4703
4704 vxge_hw_device_terminate(hldev);
4705
4706 pci_disable_device(pdev);
4707 pci_release_region(pdev, 0);
4708 pci_set_drvdata(pdev, NULL);
4709 vxge_debug_entryexit(vdev->level_trace, "%s:%d Exiting...", __func__,
4710 __LINE__);
4711 }
4712
4713 static struct pci_error_handlers vxge_err_handler = {
4714 .error_detected = vxge_io_error_detected,
4715 .slot_reset = vxge_io_slot_reset,
4716 .resume = vxge_io_resume,
4717 };
4718
4719 static struct pci_driver vxge_driver = {
4720 .name = VXGE_DRIVER_NAME,
4721 .id_table = vxge_id_table,
4722 .probe = vxge_probe,
4723 .remove = __devexit_p(vxge_remove),
4724 #ifdef CONFIG_PM
4725 .suspend = vxge_pm_suspend,
4726 .resume = vxge_pm_resume,
4727 #endif
4728 .err_handler = &vxge_err_handler,
4729 };
4730
4731 static int __init
4732 vxge_starter(void)
4733 {
4734 int ret = 0;
4735
4736 pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4737 pr_info("Driver version: %s\n", DRV_VERSION);
4738
4739 verify_bandwidth();
4740
4741 driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4742 if (!driver_config)
4743 return -ENOMEM;
4744
4745 ret = pci_register_driver(&vxge_driver);
4746 if (ret) {
4747 kfree(driver_config);
4748 goto err;
4749 }
4750
4751 if (driver_config->config_dev_cnt &&
4752 (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4753 vxge_debug_init(VXGE_ERR,
4754 "%s: Configured %d of %d devices",
4755 VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4756 driver_config->total_dev_cnt);
4757 err:
4758 return ret;
4759 }
4760
4761 static void __exit
4762 vxge_closer(void)
4763 {
4764 pci_unregister_driver(&vxge_driver);
4765 kfree(driver_config);
4766 }
4767 module_init(vxge_starter);
4768 module_exit(vxge_closer);