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Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux
[linux-btrfs-devel.git] / drivers / net / bna / bnad.c
blob8e35b2596f93a9b0953ab52fac65827cae3a0322
1 /*
2 * Linux network driver for Brocade Converged Network Adapter.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License (GPL) Version 2 as
6 * published by the Free Software Foundation
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 */
13 /*
14 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
15 * All rights reserved
16 * www.brocade.com
17 */
18 #include <linux/bitops.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/etherdevice.h>
22 #include <linux/in.h>
23 #include <linux/ethtool.h>
24 #include <linux/if_vlan.h>
25 #include <linux/if_ether.h>
26 #include <linux/ip.h>
27 #include <linux/prefetch.h>
28
29 #include "bnad.h"
30 #include "bna.h"
31 #include "cna.h"
32
33 static DEFINE_MUTEX(bnad_fwimg_mutex);
34
35 /*
36 * Module params
37 */
38 static uint bnad_msix_disable;
39 module_param(bnad_msix_disable, uint, 0444);
40 MODULE_PARM_DESC(bnad_msix_disable, "Disable MSIX mode");
41
42 static uint bnad_ioc_auto_recover = 1;
43 module_param(bnad_ioc_auto_recover, uint, 0444);
44 MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery");
45
46 /*
47 * Global variables
48 */
49 u32 bnad_rxqs_per_cq = 2;
50
51 static const u8 bnad_bcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
52
53 /*
54 * Local MACROS
55 */
56 #define BNAD_TX_UNMAPQ_DEPTH (bnad->txq_depth * 2)
57
58 #define BNAD_RX_UNMAPQ_DEPTH (bnad->rxq_depth)
59
60 #define BNAD_GET_MBOX_IRQ(_bnad) \
61 (((_bnad)->cfg_flags & BNAD_CF_MSIX) ? \
62 ((_bnad)->msix_table[BNAD_MAILBOX_MSIX_INDEX].vector) : \
63 ((_bnad)->pcidev->irq))
64
65 #define BNAD_FILL_UNMAPQ_MEM_REQ(_res_info, _num, _depth) \
66 do { \
67 (_res_info)->res_type = BNA_RES_T_MEM; \
68 (_res_info)->res_u.mem_info.mem_type = BNA_MEM_T_KVA; \
69 (_res_info)->res_u.mem_info.num = (_num); \
70 (_res_info)->res_u.mem_info.len = \
71 sizeof(struct bnad_unmap_q) + \
72 (sizeof(struct bnad_skb_unmap) * ((_depth) - 1)); \
73 } while (0)
74
75 #define BNAD_TXRX_SYNC_MDELAY 250 /* 250 msecs */
76
77 /*
78 * Reinitialize completions in CQ, once Rx is taken down
79 */
80 static void
81 bnad_cq_cmpl_init(struct bnad *bnad, struct bna_ccb *ccb)
82 {
83 struct bna_cq_entry *cmpl, *next_cmpl;
84 unsigned int wi_range, wis = 0, ccb_prod = 0;
85 int i;
86
87 BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt, cmpl,
88 wi_range);
89
90 for (i = 0; i < ccb->q_depth; i++) {
91 wis++;
92 if (likely(--wi_range))
93 next_cmpl = cmpl + 1;
94 else {
95 BNA_QE_INDX_ADD(ccb_prod, wis, ccb->q_depth);
96 wis = 0;
97 BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt,
98 next_cmpl, wi_range);
99 }
100 cmpl->valid = 0;
101 cmpl = next_cmpl;
102 }
103 }
104
105 /*
106 * Frees all pending Tx Bufs
107 * At this point no activity is expected on the Q,
108 * so DMA unmap & freeing is fine.
109 */
110 static void
111 bnad_free_all_txbufs(struct bnad *bnad,
112 struct bna_tcb *tcb)
113 {
114 u32 unmap_cons;
115 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
116 struct bnad_skb_unmap *unmap_array;
117 struct sk_buff *skb = NULL;
118 int i;
119
120 unmap_array = unmap_q->unmap_array;
121
122 unmap_cons = 0;
123 while (unmap_cons < unmap_q->q_depth) {
124 skb = unmap_array[unmap_cons].skb;
125 if (!skb) {
126 unmap_cons++;
127 continue;
128 }
129 unmap_array[unmap_cons].skb = NULL;
130
131 dma_unmap_single(&bnad->pcidev->dev,
132 dma_unmap_addr(&unmap_array[unmap_cons],
133 dma_addr), skb_headlen(skb),
134 DMA_TO_DEVICE);
135
136 dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
137 if (++unmap_cons >= unmap_q->q_depth)
138 break;
139
140 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
141 dma_unmap_page(&bnad->pcidev->dev,
142 dma_unmap_addr(&unmap_array[unmap_cons],
143 dma_addr),
144 skb_shinfo(skb)->frags[i].size,
145 DMA_TO_DEVICE);
146 dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
147 0);
148 if (++unmap_cons >= unmap_q->q_depth)
149 break;
150 }
151 dev_kfree_skb_any(skb);
152 }
153 }
154
155 /* Data Path Handlers */
156
157 /*
158 * bnad_free_txbufs : Frees the Tx bufs on Tx completion
159 * Can be called in a) Interrupt context
160 * b) Sending context
161 * c) Tasklet context
162 */
163 static u32
164 bnad_free_txbufs(struct bnad *bnad,
165 struct bna_tcb *tcb)
166 {
167 u32 sent_packets = 0, sent_bytes = 0;
168 u16 wis, unmap_cons, updated_hw_cons;
169 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
170 struct bnad_skb_unmap *unmap_array;
171 struct sk_buff *skb;
172 int i;
173
174 /*
175 * Just return if TX is stopped. This check is useful
176 * when bnad_free_txbufs() runs out of a tasklet scheduled
177 * before bnad_cb_tx_cleanup() cleared BNAD_TXQ_TX_STARTED bit
178 * but this routine runs actually after the cleanup has been
179 * executed.
180 */
181 if (!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))
182 return 0;
183
184 updated_hw_cons = *(tcb->hw_consumer_index);
185
186 wis = BNA_Q_INDEX_CHANGE(tcb->consumer_index,
187 updated_hw_cons, tcb->q_depth);
188
189 BUG_ON(!(wis <= BNA_QE_IN_USE_CNT(tcb, tcb->q_depth)));
190
191 unmap_array = unmap_q->unmap_array;
192 unmap_cons = unmap_q->consumer_index;
193
194 prefetch(&unmap_array[unmap_cons + 1]);
195 while (wis) {
196 skb = unmap_array[unmap_cons].skb;
197
198 unmap_array[unmap_cons].skb = NULL;
199
200 sent_packets++;
201 sent_bytes += skb->len;
202 wis -= BNA_TXQ_WI_NEEDED(1 + skb_shinfo(skb)->nr_frags);
203
204 dma_unmap_single(&bnad->pcidev->dev,
205 dma_unmap_addr(&unmap_array[unmap_cons],
206 dma_addr), skb_headlen(skb),
207 DMA_TO_DEVICE);
208 dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
209 BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
210
211 prefetch(&unmap_array[unmap_cons + 1]);
212 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
213 prefetch(&unmap_array[unmap_cons + 1]);
214
215 dma_unmap_page(&bnad->pcidev->dev,
216 dma_unmap_addr(&unmap_array[unmap_cons],
217 dma_addr),
218 skb_shinfo(skb)->frags[i].size,
219 DMA_TO_DEVICE);
220 dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
221 0);
222 BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
223 }
224 dev_kfree_skb_any(skb);
225 }
226
227 /* Update consumer pointers. */
228 tcb->consumer_index = updated_hw_cons;
229 unmap_q->consumer_index = unmap_cons;
230
231 tcb->txq->tx_packets += sent_packets;
232 tcb->txq->tx_bytes += sent_bytes;
233
234 return sent_packets;
235 }
236
237 /* Tx Free Tasklet function */
238 /* Frees for all the tcb's in all the Tx's */
239 /*
240 * Scheduled from sending context, so that
241 * the fat Tx lock is not held for too long
242 * in the sending context.
243 */
244 static void
245 bnad_tx_free_tasklet(unsigned long bnad_ptr)
246 {
247 struct bnad *bnad = (struct bnad *)bnad_ptr;
248 struct bna_tcb *tcb;
249 u32 acked = 0;
250 int i, j;
251
252 for (i = 0; i < bnad->num_tx; i++) {
253 for (j = 0; j < bnad->num_txq_per_tx; j++) {
254 tcb = bnad->tx_info[i].tcb[j];
255 if (!tcb)
256 continue;
257 if (((u16) (*tcb->hw_consumer_index) !=
258 tcb->consumer_index) &&
259 (!test_and_set_bit(BNAD_TXQ_FREE_SENT,
260 &tcb->flags))) {
261 acked = bnad_free_txbufs(bnad, tcb);
262 if (likely(test_bit(BNAD_TXQ_TX_STARTED,
263 &tcb->flags)))
264 bna_ib_ack(tcb->i_dbell, acked);
265 smp_mb__before_clear_bit();
266 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
267 }
268 if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED,
269 &tcb->flags)))
270 continue;
271 if (netif_queue_stopped(bnad->netdev)) {
272 if (acked && netif_carrier_ok(bnad->netdev) &&
273 BNA_QE_FREE_CNT(tcb, tcb->q_depth) >=
274 BNAD_NETIF_WAKE_THRESHOLD) {
275 netif_wake_queue(bnad->netdev);
276 /* TODO */
277 /* Counters for individual TxQs? */
278 BNAD_UPDATE_CTR(bnad,
279 netif_queue_wakeup);
280 }
281 }
282 }
283 }
284 }
285
286 static u32
287 bnad_tx(struct bnad *bnad, struct bna_tcb *tcb)
288 {
289 struct net_device *netdev = bnad->netdev;
290 u32 sent = 0;
291
292 if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
293 return 0;
294
295 sent = bnad_free_txbufs(bnad, tcb);
296 if (sent) {
297 if (netif_queue_stopped(netdev) &&
298 netif_carrier_ok(netdev) &&
299 BNA_QE_FREE_CNT(tcb, tcb->q_depth) >=
300 BNAD_NETIF_WAKE_THRESHOLD) {
301 if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) {
302 netif_wake_queue(netdev);
303 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
304 }
305 }
306 }
307
308 if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)))
309 bna_ib_ack(tcb->i_dbell, sent);
310
311 smp_mb__before_clear_bit();
312 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
313
314 return sent;
315 }
316
317 /* MSIX Tx Completion Handler */
318 static irqreturn_t
319 bnad_msix_tx(int irq, void *data)
320 {
321 struct bna_tcb *tcb = (struct bna_tcb *)data;
322 struct bnad *bnad = tcb->bnad;
323
324 bnad_tx(bnad, tcb);
325
326 return IRQ_HANDLED;
327 }
328
329 static void
330 bnad_reset_rcb(struct bnad *bnad, struct bna_rcb *rcb)
331 {
332 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
333
334 rcb->producer_index = 0;
335 rcb->consumer_index = 0;
336
337 unmap_q->producer_index = 0;
338 unmap_q->consumer_index = 0;
339 }
340
341 static void
342 bnad_free_all_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
343 {
344 struct bnad_unmap_q *unmap_q;
345 struct bnad_skb_unmap *unmap_array;
346 struct sk_buff *skb;
347 int unmap_cons;
348
349 unmap_q = rcb->unmap_q;
350 unmap_array = unmap_q->unmap_array;
351 for (unmap_cons = 0; unmap_cons < unmap_q->q_depth; unmap_cons++) {
352 skb = unmap_array[unmap_cons].skb;
353 if (!skb)
354 continue;
355 unmap_array[unmap_cons].skb = NULL;
356 dma_unmap_single(&bnad->pcidev->dev,
357 dma_unmap_addr(&unmap_array[unmap_cons],
358 dma_addr),
359 rcb->rxq->buffer_size,
360 DMA_FROM_DEVICE);
361 dev_kfree_skb(skb);
362 }
363 bnad_reset_rcb(bnad, rcb);
364 }
365
366 static void
367 bnad_alloc_n_post_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
368 {
369 u16 to_alloc, alloced, unmap_prod, wi_range;
370 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
371 struct bnad_skb_unmap *unmap_array;
372 struct bna_rxq_entry *rxent;
373 struct sk_buff *skb;
374 dma_addr_t dma_addr;
375
376 alloced = 0;
377 to_alloc =
378 BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth);
379
380 unmap_array = unmap_q->unmap_array;
381 unmap_prod = unmap_q->producer_index;
382
383 BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent, wi_range);
384
385 while (to_alloc--) {
386 if (!wi_range) {
387 BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent,
388 wi_range);
389 }
390 skb = netdev_alloc_skb_ip_align(bnad->netdev,
391 rcb->rxq->buffer_size);
392 if (unlikely(!skb)) {
393 BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed);
394 goto finishing;
395 }
396 unmap_array[unmap_prod].skb = skb;
397 dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data,
398 rcb->rxq->buffer_size,
399 DMA_FROM_DEVICE);
400 dma_unmap_addr_set(&unmap_array[unmap_prod], dma_addr,
401 dma_addr);
402 BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr);
403 BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
404
405 rxent++;
406 wi_range--;
407 alloced++;
408 }
409
410 finishing:
411 if (likely(alloced)) {
412 unmap_q->producer_index = unmap_prod;
413 rcb->producer_index = unmap_prod;
414 smp_mb();
415 if (likely(test_bit(BNAD_RXQ_STARTED, &rcb->flags)))
416 bna_rxq_prod_indx_doorbell(rcb);
417 }
418 }
419
420 static inline void
421 bnad_refill_rxq(struct bnad *bnad, struct bna_rcb *rcb)
422 {
423 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
424
425 if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
426 if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
427 >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
428 bnad_alloc_n_post_rxbufs(bnad, rcb);
429 smp_mb__before_clear_bit();
430 clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
431 }
432 }
433
434 static u32
435 bnad_poll_cq(struct bnad *bnad, struct bna_ccb *ccb, int budget)
436 {
437 struct bna_cq_entry *cmpl, *next_cmpl;
438 struct bna_rcb *rcb = NULL;
439 unsigned int wi_range, packets = 0, wis = 0;
440 struct bnad_unmap_q *unmap_q;
441 struct bnad_skb_unmap *unmap_array;
442 struct sk_buff *skb;
443 u32 flags, unmap_cons;
444 u32 qid0 = ccb->rcb[0]->rxq->rxq_id;
445 struct bna_pkt_rate *pkt_rt = &ccb->pkt_rate;
446
447 if (!test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags))
448 return 0;
449
450 prefetch(bnad->netdev);
451 BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt, cmpl,
452 wi_range);
453 BUG_ON(!(wi_range <= ccb->q_depth));
454 while (cmpl->valid && packets < budget) {
455 packets++;
456 BNA_UPDATE_PKT_CNT(pkt_rt, ntohs(cmpl->length));
457
458 if (qid0 == cmpl->rxq_id)
459 rcb = ccb->rcb[0];
460 else
461 rcb = ccb->rcb[1];
462
463 unmap_q = rcb->unmap_q;
464 unmap_array = unmap_q->unmap_array;
465 unmap_cons = unmap_q->consumer_index;
466
467 skb = unmap_array[unmap_cons].skb;
468 BUG_ON(!(skb));
469 unmap_array[unmap_cons].skb = NULL;
470 dma_unmap_single(&bnad->pcidev->dev,
471 dma_unmap_addr(&unmap_array[unmap_cons],
472 dma_addr),
473 rcb->rxq->buffer_size,
474 DMA_FROM_DEVICE);
475 BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth);
476
477 /* Should be more efficient ? Performance ? */
478 BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth);
479
480 wis++;
481 if (likely(--wi_range))
482 next_cmpl = cmpl + 1;
483 else {
484 BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
485 wis = 0;
486 BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt,
487 next_cmpl, wi_range);
488 BUG_ON(!(wi_range <= ccb->q_depth));
489 }
490 prefetch(next_cmpl);
491
492 flags = ntohl(cmpl->flags);
493 if (unlikely
494 (flags &
495 (BNA_CQ_EF_MAC_ERROR | BNA_CQ_EF_FCS_ERROR |
496 BNA_CQ_EF_TOO_LONG))) {
497 dev_kfree_skb_any(skb);
498 rcb->rxq->rx_packets_with_error++;
499 goto next;
500 }
501
502 skb_put(skb, ntohs(cmpl->length));
503 if (likely
504 ((bnad->netdev->features & NETIF_F_RXCSUM) &&
505 (((flags & BNA_CQ_EF_IPV4) &&
506 (flags & BNA_CQ_EF_L3_CKSUM_OK)) ||
507 (flags & BNA_CQ_EF_IPV6)) &&
508 (flags & (BNA_CQ_EF_TCP | BNA_CQ_EF_UDP)) &&
509 (flags & BNA_CQ_EF_L4_CKSUM_OK)))
510 skb->ip_summed = CHECKSUM_UNNECESSARY;
511 else
512 skb_checksum_none_assert(skb);
513
514 rcb->rxq->rx_packets++;
515 rcb->rxq->rx_bytes += skb->len;
516 skb->protocol = eth_type_trans(skb, bnad->netdev);
517
518 if (flags & BNA_CQ_EF_VLAN)
519 __vlan_hwaccel_put_tag(skb, ntohs(cmpl->vlan_tag));
520
521 if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
522 struct bnad_rx_ctrl *rx_ctrl;
523
524 rx_ctrl = (struct bnad_rx_ctrl *) ccb->ctrl;
525 napi_gro_receive(&rx_ctrl->napi, skb);
526 } else {
527 netif_receive_skb(skb);
528 }
529
530 next:
531 cmpl->valid = 0;
532 cmpl = next_cmpl;
533 }
534
535 BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
536
537 if (likely(ccb)) {
538 if (likely(test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags)))
539 bna_ib_ack(ccb->i_dbell, packets);
540 bnad_refill_rxq(bnad, ccb->rcb[0]);
541 if (ccb->rcb[1])
542 bnad_refill_rxq(bnad, ccb->rcb[1]);
543 } else {
544 if (likely(test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags)))
545 bna_ib_ack(ccb->i_dbell, 0);
546 }
547
548 return packets;
549 }
550
551 static void
552 bnad_disable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
553 {
554 if (unlikely(!test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags)))
555 return;
556
557 bna_ib_coalescing_timer_set(ccb->i_dbell, 0);
558 bna_ib_ack(ccb->i_dbell, 0);
559 }
560
561 static void
562 bnad_enable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
563 {
564 unsigned long flags;
565
566 /* Because of polling context */
567 spin_lock_irqsave(&bnad->bna_lock, flags);
568 bnad_enable_rx_irq_unsafe(ccb);
569 spin_unlock_irqrestore(&bnad->bna_lock, flags);
570 }
571
572 static void
573 bnad_netif_rx_schedule_poll(struct bnad *bnad, struct bna_ccb *ccb)
574 {
575 struct bnad_rx_ctrl *rx_ctrl = (struct bnad_rx_ctrl *)(ccb->ctrl);
576 struct napi_struct *napi = &rx_ctrl->napi;
577
578 if (likely(napi_schedule_prep(napi))) {
579 bnad_disable_rx_irq(bnad, ccb);
580 __napi_schedule(napi);
581 }
582 BNAD_UPDATE_CTR(bnad, netif_rx_schedule);
583 }
584
585 /* MSIX Rx Path Handler */
586 static irqreturn_t
587 bnad_msix_rx(int irq, void *data)
588 {
589 struct bna_ccb *ccb = (struct bna_ccb *)data;
590 struct bnad *bnad = ccb->bnad;
591
592 bnad_netif_rx_schedule_poll(bnad, ccb);
593
594 return IRQ_HANDLED;
595 }
596
597 /* Interrupt handlers */
598
599 /* Mbox Interrupt Handlers */
600 static irqreturn_t
601 bnad_msix_mbox_handler(int irq, void *data)
602 {
603 u32 intr_status;
604 unsigned long flags;
605 struct bnad *bnad = (struct bnad *)data;
606
607 if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags)))
608 return IRQ_HANDLED;
609
610 spin_lock_irqsave(&bnad->bna_lock, flags);
611
612 bna_intr_status_get(&bnad->bna, intr_status);
613
614 if (BNA_IS_MBOX_ERR_INTR(intr_status))
615 bna_mbox_handler(&bnad->bna, intr_status);
616
617 spin_unlock_irqrestore(&bnad->bna_lock, flags);
618
619 return IRQ_HANDLED;
620 }
621
622 static irqreturn_t
623 bnad_isr(int irq, void *data)
624 {
625 int i, j;
626 u32 intr_status;
627 unsigned long flags;
628 struct bnad *bnad = (struct bnad *)data;
629 struct bnad_rx_info *rx_info;
630 struct bnad_rx_ctrl *rx_ctrl;
631
632 if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags)))
633 return IRQ_NONE;
634
635 bna_intr_status_get(&bnad->bna, intr_status);
636
637 if (unlikely(!intr_status))
638 return IRQ_NONE;
639
640 spin_lock_irqsave(&bnad->bna_lock, flags);
641
642 if (BNA_IS_MBOX_ERR_INTR(intr_status))
643 bna_mbox_handler(&bnad->bna, intr_status);
644
645 spin_unlock_irqrestore(&bnad->bna_lock, flags);
646
647 if (!BNA_IS_INTX_DATA_INTR(intr_status))
648 return IRQ_HANDLED;
649
650 /* Process data interrupts */
651 /* Tx processing */
652 for (i = 0; i < bnad->num_tx; i++) {
653 for (j = 0; j < bnad->num_txq_per_tx; j++)
654 bnad_tx(bnad, bnad->tx_info[i].tcb[j]);
655 }
656 /* Rx processing */
657 for (i = 0; i < bnad->num_rx; i++) {
658 rx_info = &bnad->rx_info[i];
659 if (!rx_info->rx)
660 continue;
661 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
662 rx_ctrl = &rx_info->rx_ctrl[j];
663 if (rx_ctrl->ccb)
664 bnad_netif_rx_schedule_poll(bnad,
665 rx_ctrl->ccb);
666 }
667 }
668 return IRQ_HANDLED;
669 }
670
671 /*
672 * Called in interrupt / callback context
673 * with bna_lock held, so cfg_flags access is OK
674 */
675 static void
676 bnad_enable_mbox_irq(struct bnad *bnad)
677 {
678 clear_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags);
679
680 BNAD_UPDATE_CTR(bnad, mbox_intr_enabled);
681 }
682
683 /*
684 * Called with bnad->bna_lock held b'cos of
685 * bnad->cfg_flags access.
686 */
687 static void
688 bnad_disable_mbox_irq(struct bnad *bnad)
689 {
690 set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags);
691
692 BNAD_UPDATE_CTR(bnad, mbox_intr_disabled);
693 }
694
695 static void
696 bnad_set_netdev_perm_addr(struct bnad *bnad)
697 {
698 struct net_device *netdev = bnad->netdev;
699
700 memcpy(netdev->perm_addr, &bnad->perm_addr, netdev->addr_len);
701 if (is_zero_ether_addr(netdev->dev_addr))
702 memcpy(netdev->dev_addr, &bnad->perm_addr, netdev->addr_len);
703 }
704
705 /* Control Path Handlers */
706
707 /* Callbacks */
708 void
709 bnad_cb_device_enable_mbox_intr(struct bnad *bnad)
710 {
711 bnad_enable_mbox_irq(bnad);
712 }
713
714 void
715 bnad_cb_device_disable_mbox_intr(struct bnad *bnad)
716 {
717 bnad_disable_mbox_irq(bnad);
718 }
719
720 void
721 bnad_cb_device_enabled(struct bnad *bnad, enum bna_cb_status status)
722 {
723 complete(&bnad->bnad_completions.ioc_comp);
724 bnad->bnad_completions.ioc_comp_status = status;
725 }
726
727 void
728 bnad_cb_device_disabled(struct bnad *bnad, enum bna_cb_status status)
729 {
730 complete(&bnad->bnad_completions.ioc_comp);
731 bnad->bnad_completions.ioc_comp_status = status;
732 }
733
734 static void
735 bnad_cb_port_disabled(void *arg, enum bna_cb_status status)
736 {
737 struct bnad *bnad = (struct bnad *)arg;
738
739 complete(&bnad->bnad_completions.port_comp);
740
741 netif_carrier_off(bnad->netdev);
742 }
743
744 void
745 bnad_cb_port_link_status(struct bnad *bnad,
746 enum bna_link_status link_status)
747 {
748 bool link_up = 0;
749
750 link_up = (link_status == BNA_LINK_UP) || (link_status == BNA_CEE_UP);
751
752 if (link_status == BNA_CEE_UP) {
753 set_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
754 BNAD_UPDATE_CTR(bnad, cee_up);
755 } else
756 clear_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
757
758 if (link_up) {
759 if (!netif_carrier_ok(bnad->netdev)) {
760 struct bna_tcb *tcb = bnad->tx_info[0].tcb[0];
761 if (!tcb)
762 return;
763 pr_warn("bna: %s link up\n",
764 bnad->netdev->name);
765 netif_carrier_on(bnad->netdev);
766 BNAD_UPDATE_CTR(bnad, link_toggle);
767 if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) {
768 /* Force an immediate Transmit Schedule */
769 pr_info("bna: %s TX_STARTED\n",
770 bnad->netdev->name);
771 netif_wake_queue(bnad->netdev);
772 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
773 } else {
774 netif_stop_queue(bnad->netdev);
775 BNAD_UPDATE_CTR(bnad, netif_queue_stop);
776 }
777 }
778 } else {
779 if (netif_carrier_ok(bnad->netdev)) {
780 pr_warn("bna: %s link down\n",
781 bnad->netdev->name);
782 netif_carrier_off(bnad->netdev);
783 BNAD_UPDATE_CTR(bnad, link_toggle);
784 }
785 }
786 }
787
788 static void
789 bnad_cb_tx_disabled(void *arg, struct bna_tx *tx,
790 enum bna_cb_status status)
791 {
792 struct bnad *bnad = (struct bnad *)arg;
793
794 complete(&bnad->bnad_completions.tx_comp);
795 }
796
797 static void
798 bnad_cb_tcb_setup(struct bnad *bnad, struct bna_tcb *tcb)
799 {
800 struct bnad_tx_info *tx_info =
801 (struct bnad_tx_info *)tcb->txq->tx->priv;
802 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
803
804 tx_info->tcb[tcb->id] = tcb;
805 unmap_q->producer_index = 0;
806 unmap_q->consumer_index = 0;
807 unmap_q->q_depth = BNAD_TX_UNMAPQ_DEPTH;
808 }
809
810 static void
811 bnad_cb_tcb_destroy(struct bnad *bnad, struct bna_tcb *tcb)
812 {
813 struct bnad_tx_info *tx_info =
814 (struct bnad_tx_info *)tcb->txq->tx->priv;
815 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
816
817 while (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
818 cpu_relax();
819
820 bnad_free_all_txbufs(bnad, tcb);
821
822 unmap_q->producer_index = 0;
823 unmap_q->consumer_index = 0;
824
825 smp_mb__before_clear_bit();
826 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
827
828 tx_info->tcb[tcb->id] = NULL;
829 }
830
831 static void
832 bnad_cb_rcb_setup(struct bnad *bnad, struct bna_rcb *rcb)
833 {
834 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
835
836 unmap_q->producer_index = 0;
837 unmap_q->consumer_index = 0;
838 unmap_q->q_depth = BNAD_RX_UNMAPQ_DEPTH;
839 }
840
841 static void
842 bnad_cb_rcb_destroy(struct bnad *bnad, struct bna_rcb *rcb)
843 {
844 bnad_free_all_rxbufs(bnad, rcb);
845 }
846
847 static void
848 bnad_cb_ccb_setup(struct bnad *bnad, struct bna_ccb *ccb)
849 {
850 struct bnad_rx_info *rx_info =
851 (struct bnad_rx_info *)ccb->cq->rx->priv;
852
853 rx_info->rx_ctrl[ccb->id].ccb = ccb;
854 ccb->ctrl = &rx_info->rx_ctrl[ccb->id];
855 }
856
857 static void
858 bnad_cb_ccb_destroy(struct bnad *bnad, struct bna_ccb *ccb)
859 {
860 struct bnad_rx_info *rx_info =
861 (struct bnad_rx_info *)ccb->cq->rx->priv;
862
863 rx_info->rx_ctrl[ccb->id].ccb = NULL;
864 }
865
866 static void
867 bnad_cb_tx_stall(struct bnad *bnad, struct bna_tcb *tcb)
868 {
869 struct bnad_tx_info *tx_info =
870 (struct bnad_tx_info *)tcb->txq->tx->priv;
871
872 if (tx_info != &bnad->tx_info[0])
873 return;
874
875 clear_bit(BNAD_TXQ_TX_STARTED, &tcb->flags);
876 netif_stop_queue(bnad->netdev);
877 pr_info("bna: %s TX_STOPPED\n", bnad->netdev->name);
878 }
879
880 static void
881 bnad_cb_tx_resume(struct bnad *bnad, struct bna_tcb *tcb)
882 {
883 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
884
885 if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))
886 return;
887
888 clear_bit(BNAD_RF_TX_SHUTDOWN_DELAYED, &bnad->run_flags);
889
890 while (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
891 cpu_relax();
892
893 bnad_free_all_txbufs(bnad, tcb);
894
895 unmap_q->producer_index = 0;
896 unmap_q->consumer_index = 0;
897
898 smp_mb__before_clear_bit();
899 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
900
901 /*
902 * Workaround for first device enable failure & we
903 * get a 0 MAC address. We try to get the MAC address
904 * again here.
905 */
906 if (is_zero_ether_addr(&bnad->perm_addr.mac[0])) {
907 bna_port_mac_get(&bnad->bna.port, &bnad->perm_addr);
908 bnad_set_netdev_perm_addr(bnad);
909 }
910
911 set_bit(BNAD_TXQ_TX_STARTED, &tcb->flags);
912
913 if (netif_carrier_ok(bnad->netdev)) {
914 pr_info("bna: %s TX_STARTED\n", bnad->netdev->name);
915 netif_wake_queue(bnad->netdev);
916 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
917 }
918 }
919
920 static void
921 bnad_cb_tx_cleanup(struct bnad *bnad, struct bna_tcb *tcb)
922 {
923 /* Delay only once for the whole Tx Path Shutdown */
924 if (!test_and_set_bit(BNAD_RF_TX_SHUTDOWN_DELAYED, &bnad->run_flags))
925 mdelay(BNAD_TXRX_SYNC_MDELAY);
926 }
927
928 static void
929 bnad_cb_rx_cleanup(struct bnad *bnad,
930 struct bna_ccb *ccb)
931 {
932 clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags);
933
934 if (ccb->rcb[1])
935 clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[1]->flags);
936
937 if (!test_and_set_bit(BNAD_RF_RX_SHUTDOWN_DELAYED, &bnad->run_flags))
938 mdelay(BNAD_TXRX_SYNC_MDELAY);
939 }
940
941 static void
942 bnad_cb_rx_post(struct bnad *bnad, struct bna_rcb *rcb)
943 {
944 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
945
946 clear_bit(BNAD_RF_RX_SHUTDOWN_DELAYED, &bnad->run_flags);
947
948 if (rcb == rcb->cq->ccb->rcb[0])
949 bnad_cq_cmpl_init(bnad, rcb->cq->ccb);
950
951 bnad_free_all_rxbufs(bnad, rcb);
952
953 set_bit(BNAD_RXQ_STARTED, &rcb->flags);
954
955 /* Now allocate & post buffers for this RCB */
956 /* !!Allocation in callback context */
957 if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
958 if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
959 >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
960 bnad_alloc_n_post_rxbufs(bnad, rcb);
961 smp_mb__before_clear_bit();
962 clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
963 }
964 }
965
966 static void
967 bnad_cb_rx_disabled(void *arg, struct bna_rx *rx,
968 enum bna_cb_status status)
969 {
970 struct bnad *bnad = (struct bnad *)arg;
971
972 complete(&bnad->bnad_completions.rx_comp);
973 }
974
975 static void
976 bnad_cb_rx_mcast_add(struct bnad *bnad, struct bna_rx *rx,
977 enum bna_cb_status status)
978 {
979 bnad->bnad_completions.mcast_comp_status = status;
980 complete(&bnad->bnad_completions.mcast_comp);
981 }
982
983 void
984 bnad_cb_stats_get(struct bnad *bnad, enum bna_cb_status status,
985 struct bna_stats *stats)
986 {
987 if (status == BNA_CB_SUCCESS)
988 BNAD_UPDATE_CTR(bnad, hw_stats_updates);
989
990 if (!netif_running(bnad->netdev) ||
991 !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
992 return;
993
994 mod_timer(&bnad->stats_timer,
995 jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ));
996 }
997
998 /* Resource allocation, free functions */
999
1000 static void
1001 bnad_mem_free(struct bnad *bnad,
1002 struct bna_mem_info *mem_info)
1003 {
1004 int i;
1005 dma_addr_t dma_pa;
1006
1007 if (mem_info->mdl == NULL)
1008 return;
1009
1010 for (i = 0; i < mem_info->num; i++) {
1011 if (mem_info->mdl[i].kva != NULL) {
1012 if (mem_info->mem_type == BNA_MEM_T_DMA) {
1013 BNA_GET_DMA_ADDR(&(mem_info->mdl[i].dma),
1014 dma_pa);
1015 dma_free_coherent(&bnad->pcidev->dev,
1016 mem_info->mdl[i].len,
1017 mem_info->mdl[i].kva, dma_pa);
1018 } else
1019 kfree(mem_info->mdl[i].kva);
1020 }
1021 }
1022 kfree(mem_info->mdl);
1023 mem_info->mdl = NULL;
1024 }
1025
1026 static int
1027 bnad_mem_alloc(struct bnad *bnad,
1028 struct bna_mem_info *mem_info)
1029 {
1030 int i;
1031 dma_addr_t dma_pa;
1032
1033 if ((mem_info->num == 0) || (mem_info->len == 0)) {
1034 mem_info->mdl = NULL;
1035 return 0;
1036 }
1037
1038 mem_info->mdl = kcalloc(mem_info->num, sizeof(struct bna_mem_descr),
1039 GFP_KERNEL);
1040 if (mem_info->mdl == NULL)
1041 return -ENOMEM;
1042
1043 if (mem_info->mem_type == BNA_MEM_T_DMA) {
1044 for (i = 0; i < mem_info->num; i++) {
1045 mem_info->mdl[i].len = mem_info->len;
1046 mem_info->mdl[i].kva =
1047 dma_alloc_coherent(&bnad->pcidev->dev,
1048 mem_info->len, &dma_pa,
1049 GFP_KERNEL);
1050
1051 if (mem_info->mdl[i].kva == NULL)
1052 goto err_return;
1053
1054 BNA_SET_DMA_ADDR(dma_pa,
1055 &(mem_info->mdl[i].dma));
1056 }
1057 } else {
1058 for (i = 0; i < mem_info->num; i++) {
1059 mem_info->mdl[i].len = mem_info->len;
1060 mem_info->mdl[i].kva = kzalloc(mem_info->len,
1061 GFP_KERNEL);
1062 if (mem_info->mdl[i].kva == NULL)
1063 goto err_return;
1064 }
1065 }
1066
1067 return 0;
1068
1069 err_return:
1070 bnad_mem_free(bnad, mem_info);
1071 return -ENOMEM;
1072 }
1073
1074 /* Free IRQ for Mailbox */
1075 static void
1076 bnad_mbox_irq_free(struct bnad *bnad,
1077 struct bna_intr_info *intr_info)
1078 {
1079 int irq;
1080 unsigned long flags;
1081
1082 if (intr_info->idl == NULL)
1083 return;
1084
1085 spin_lock_irqsave(&bnad->bna_lock, flags);
1086 bnad_disable_mbox_irq(bnad);
1087 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1088
1089 irq = BNAD_GET_MBOX_IRQ(bnad);
1090 free_irq(irq, bnad);
1091
1092 kfree(intr_info->idl);
1093 }
1094
1095 /*
1096 * Allocates IRQ for Mailbox, but keep it disabled
1097 * This will be enabled once we get the mbox enable callback
1098 * from bna
1099 */
1100 static int
1101 bnad_mbox_irq_alloc(struct bnad *bnad,
1102 struct bna_intr_info *intr_info)
1103 {
1104 int err = 0;
1105 unsigned long irq_flags, flags;
1106 u32 irq;
1107 irq_handler_t irq_handler;
1108
1109 /* Mbox should use only 1 vector */
1110
1111 intr_info->idl = kzalloc(sizeof(*(intr_info->idl)), GFP_KERNEL);
1112 if (!intr_info->idl)
1113 return -ENOMEM;
1114
1115 spin_lock_irqsave(&bnad->bna_lock, flags);
1116 if (bnad->cfg_flags & BNAD_CF_MSIX) {
1117 irq_handler = (irq_handler_t)bnad_msix_mbox_handler;
1118 irq = bnad->msix_table[BNAD_MAILBOX_MSIX_INDEX].vector;
1119 irq_flags = 0;
1120 intr_info->intr_type = BNA_INTR_T_MSIX;
1121 intr_info->idl[0].vector = BNAD_MAILBOX_MSIX_INDEX;
1122 } else {
1123 irq_handler = (irq_handler_t)bnad_isr;
1124 irq = bnad->pcidev->irq;
1125 irq_flags = IRQF_SHARED;
1126 intr_info->intr_type = BNA_INTR_T_INTX;
1127 }
1128
1129 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1130 sprintf(bnad->mbox_irq_name, "%s", BNAD_NAME);
1131
1132 /*
1133 * Set the Mbox IRQ disable flag, so that the IRQ handler
1134 * called from request_irq() for SHARED IRQs do not execute
1135 */
1136 set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags);
1137
1138 BNAD_UPDATE_CTR(bnad, mbox_intr_disabled);
1139
1140 err = request_irq(irq, irq_handler, irq_flags,
1141 bnad->mbox_irq_name, bnad);
1142
1143 if (err) {
1144 kfree(intr_info->idl);
1145 intr_info->idl = NULL;
1146 }
1147
1148 return err;
1149 }
1150
1151 static void
1152 bnad_txrx_irq_free(struct bnad *bnad, struct bna_intr_info *intr_info)
1153 {
1154 kfree(intr_info->idl);
1155 intr_info->idl = NULL;
1156 }
1157
1158 /* Allocates Interrupt Descriptor List for MSIX/INT-X vectors */
1159 static int
1160 bnad_txrx_irq_alloc(struct bnad *bnad, enum bnad_intr_source src,
1161 uint txrx_id, struct bna_intr_info *intr_info)
1162 {
1163 int i, vector_start = 0;
1164 u32 cfg_flags;
1165 unsigned long flags;
1166
1167 spin_lock_irqsave(&bnad->bna_lock, flags);
1168 cfg_flags = bnad->cfg_flags;
1169 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1170
1171 if (cfg_flags & BNAD_CF_MSIX) {
1172 intr_info->intr_type = BNA_INTR_T_MSIX;
1173 intr_info->idl = kcalloc(intr_info->num,
1174 sizeof(struct bna_intr_descr),
1175 GFP_KERNEL);
1176 if (!intr_info->idl)
1177 return -ENOMEM;
1178
1179 switch (src) {
1180 case BNAD_INTR_TX:
1181 vector_start = BNAD_MAILBOX_MSIX_VECTORS + txrx_id;
1182 break;
1183
1184 case BNAD_INTR_RX:
1185 vector_start = BNAD_MAILBOX_MSIX_VECTORS +
1186 (bnad->num_tx * bnad->num_txq_per_tx) +
1187 txrx_id;
1188 break;
1189
1190 default:
1191 BUG();
1192 }
1193
1194 for (i = 0; i < intr_info->num; i++)
1195 intr_info->idl[i].vector = vector_start + i;
1196 } else {
1197 intr_info->intr_type = BNA_INTR_T_INTX;
1198 intr_info->num = 1;
1199 intr_info->idl = kcalloc(intr_info->num,
1200 sizeof(struct bna_intr_descr),
1201 GFP_KERNEL);
1202 if (!intr_info->idl)
1203 return -ENOMEM;
1204
1205 switch (src) {
1206 case BNAD_INTR_TX:
1207 intr_info->idl[0].vector = BNAD_INTX_TX_IB_BITMASK;
1208 break;
1209
1210 case BNAD_INTR_RX:
1211 intr_info->idl[0].vector = BNAD_INTX_RX_IB_BITMASK;
1212 break;
1213 }
1214 }
1215 return 0;
1216 }
1217
1218 /**
1219 * NOTE: Should be called for MSIX only
1220 * Unregisters Tx MSIX vector(s) from the kernel
1221 */
1222 static void
1223 bnad_tx_msix_unregister(struct bnad *bnad, struct bnad_tx_info *tx_info,
1224 int num_txqs)
1225 {
1226 int i;
1227 int vector_num;
1228
1229 for (i = 0; i < num_txqs; i++) {
1230 if (tx_info->tcb[i] == NULL)
1231 continue;
1232
1233 vector_num = tx_info->tcb[i]->intr_vector;
1234 free_irq(bnad->msix_table[vector_num].vector, tx_info->tcb[i]);
1235 }
1236 }
1237
1238 /**
1239 * NOTE: Should be called for MSIX only
1240 * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel
1241 */
1242 static int
1243 bnad_tx_msix_register(struct bnad *bnad, struct bnad_tx_info *tx_info,
1244 uint tx_id, int num_txqs)
1245 {
1246 int i;
1247 int err;
1248 int vector_num;
1249
1250 for (i = 0; i < num_txqs; i++) {
1251 vector_num = tx_info->tcb[i]->intr_vector;
1252 sprintf(tx_info->tcb[i]->name, "%s TXQ %d", bnad->netdev->name,
1253 tx_id + tx_info->tcb[i]->id);
1254 err = request_irq(bnad->msix_table[vector_num].vector,
1255 (irq_handler_t)bnad_msix_tx, 0,
1256 tx_info->tcb[i]->name,
1257 tx_info->tcb[i]);
1258 if (err)
1259 goto err_return;
1260 }
1261
1262 return 0;
1263
1264 err_return:
1265 if (i > 0)
1266 bnad_tx_msix_unregister(bnad, tx_info, (i - 1));
1267 return -1;
1268 }
1269
1270 /**
1271 * NOTE: Should be called for MSIX only
1272 * Unregisters Rx MSIX vector(s) from the kernel
1273 */
1274 static void
1275 bnad_rx_msix_unregister(struct bnad *bnad, struct bnad_rx_info *rx_info,
1276 int num_rxps)
1277 {
1278 int i;
1279 int vector_num;
1280
1281 for (i = 0; i < num_rxps; i++) {
1282 if (rx_info->rx_ctrl[i].ccb == NULL)
1283 continue;
1284
1285 vector_num = rx_info->rx_ctrl[i].ccb->intr_vector;
1286 free_irq(bnad->msix_table[vector_num].vector,
1287 rx_info->rx_ctrl[i].ccb);
1288 }
1289 }
1290
1291 /**
1292 * NOTE: Should be called for MSIX only
1293 * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel
1294 */
1295 static int
1296 bnad_rx_msix_register(struct bnad *bnad, struct bnad_rx_info *rx_info,
1297 uint rx_id, int num_rxps)
1298 {
1299 int i;
1300 int err;
1301 int vector_num;
1302
1303 for (i = 0; i < num_rxps; i++) {
1304 vector_num = rx_info->rx_ctrl[i].ccb->intr_vector;
1305 sprintf(rx_info->rx_ctrl[i].ccb->name, "%s CQ %d",
1306 bnad->netdev->name,
1307 rx_id + rx_info->rx_ctrl[i].ccb->id);
1308 err = request_irq(bnad->msix_table[vector_num].vector,
1309 (irq_handler_t)bnad_msix_rx, 0,
1310 rx_info->rx_ctrl[i].ccb->name,
1311 rx_info->rx_ctrl[i].ccb);
1312 if (err)
1313 goto err_return;
1314 }
1315
1316 return 0;
1317
1318 err_return:
1319 if (i > 0)
1320 bnad_rx_msix_unregister(bnad, rx_info, (i - 1));
1321 return -1;
1322 }
1323
1324 /* Free Tx object Resources */
1325 static void
1326 bnad_tx_res_free(struct bnad *bnad, struct bna_res_info *res_info)
1327 {
1328 int i;
1329
1330 for (i = 0; i < BNA_TX_RES_T_MAX; i++) {
1331 if (res_info[i].res_type == BNA_RES_T_MEM)
1332 bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
1333 else if (res_info[i].res_type == BNA_RES_T_INTR)
1334 bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info);
1335 }
1336 }
1337
1338 /* Allocates memory and interrupt resources for Tx object */
1339 static int
1340 bnad_tx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info,
1341 uint tx_id)
1342 {
1343 int i, err = 0;
1344
1345 for (i = 0; i < BNA_TX_RES_T_MAX; i++) {
1346 if (res_info[i].res_type == BNA_RES_T_MEM)
1347 err = bnad_mem_alloc(bnad,
1348 &res_info[i].res_u.mem_info);
1349 else if (res_info[i].res_type == BNA_RES_T_INTR)
1350 err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_TX, tx_id,
1351 &res_info[i].res_u.intr_info);
1352 if (err)
1353 goto err_return;
1354 }
1355 return 0;
1356
1357 err_return:
1358 bnad_tx_res_free(bnad, res_info);
1359 return err;
1360 }
1361
1362 /* Free Rx object Resources */
1363 static void
1364 bnad_rx_res_free(struct bnad *bnad, struct bna_res_info *res_info)
1365 {
1366 int i;
1367
1368 for (i = 0; i < BNA_RX_RES_T_MAX; i++) {
1369 if (res_info[i].res_type == BNA_RES_T_MEM)
1370 bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
1371 else if (res_info[i].res_type == BNA_RES_T_INTR)
1372 bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info);
1373 }
1374 }
1375
1376 /* Allocates memory and interrupt resources for Rx object */
1377 static int
1378 bnad_rx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info,
1379 uint rx_id)
1380 {
1381 int i, err = 0;
1382
1383 /* All memory needs to be allocated before setup_ccbs */
1384 for (i = 0; i < BNA_RX_RES_T_MAX; i++) {
1385 if (res_info[i].res_type == BNA_RES_T_MEM)
1386 err = bnad_mem_alloc(bnad,
1387 &res_info[i].res_u.mem_info);
1388 else if (res_info[i].res_type == BNA_RES_T_INTR)
1389 err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_RX, rx_id,
1390 &res_info[i].res_u.intr_info);
1391 if (err)
1392 goto err_return;
1393 }
1394 return 0;
1395
1396 err_return:
1397 bnad_rx_res_free(bnad, res_info);
1398 return err;
1399 }
1400
1401 /* Timer callbacks */
1402 /* a) IOC timer */
1403 static void
1404 bnad_ioc_timeout(unsigned long data)
1405 {
1406 struct bnad *bnad = (struct bnad *)data;
1407 unsigned long flags;
1408
1409 spin_lock_irqsave(&bnad->bna_lock, flags);
1410 bfa_nw_ioc_timeout((void *) &bnad->bna.device.ioc);
1411 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1412 }
1413
1414 static void
1415 bnad_ioc_hb_check(unsigned long data)
1416 {
1417 struct bnad *bnad = (struct bnad *)data;
1418 unsigned long flags;
1419
1420 spin_lock_irqsave(&bnad->bna_lock, flags);
1421 bfa_nw_ioc_hb_check((void *) &bnad->bna.device.ioc);
1422 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1423 }
1424
1425 static void
1426 bnad_iocpf_timeout(unsigned long data)
1427 {
1428 struct bnad *bnad = (struct bnad *)data;
1429 unsigned long flags;
1430
1431 spin_lock_irqsave(&bnad->bna_lock, flags);
1432 bfa_nw_iocpf_timeout((void *) &bnad->bna.device.ioc);
1433 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1434 }
1435
1436 static void
1437 bnad_iocpf_sem_timeout(unsigned long data)
1438 {
1439 struct bnad *bnad = (struct bnad *)data;
1440 unsigned long flags;
1441
1442 spin_lock_irqsave(&bnad->bna_lock, flags);
1443 bfa_nw_iocpf_sem_timeout((void *) &bnad->bna.device.ioc);
1444 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1445 }
1446
1447 /*
1448 * All timer routines use bnad->bna_lock to protect against
1449 * the following race, which may occur in case of no locking:
1450 * Time CPU m CPU n
1451 * 0 1 = test_bit
1452 * 1 clear_bit
1453 * 2 del_timer_sync
1454 * 3 mod_timer
1455 */
1456
1457 /* b) Dynamic Interrupt Moderation Timer */
1458 static void
1459 bnad_dim_timeout(unsigned long data)
1460 {
1461 struct bnad *bnad = (struct bnad *)data;
1462 struct bnad_rx_info *rx_info;
1463 struct bnad_rx_ctrl *rx_ctrl;
1464 int i, j;
1465 unsigned long flags;
1466
1467 if (!netif_carrier_ok(bnad->netdev))
1468 return;
1469
1470 spin_lock_irqsave(&bnad->bna_lock, flags);
1471 for (i = 0; i < bnad->num_rx; i++) {
1472 rx_info = &bnad->rx_info[i];
1473 if (!rx_info->rx)
1474 continue;
1475 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
1476 rx_ctrl = &rx_info->rx_ctrl[j];
1477 if (!rx_ctrl->ccb)
1478 continue;
1479 bna_rx_dim_update(rx_ctrl->ccb);
1480 }
1481 }
1482
1483 /* Check for BNAD_CF_DIM_ENABLED, does not eleminate a race */
1484 if (test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags))
1485 mod_timer(&bnad->dim_timer,
1486 jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ));
1487 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1488 }
1489
1490 /* c) Statistics Timer */
1491 static void
1492 bnad_stats_timeout(unsigned long data)
1493 {
1494 struct bnad *bnad = (struct bnad *)data;
1495 unsigned long flags;
1496
1497 if (!netif_running(bnad->netdev) ||
1498 !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
1499 return;
1500
1501 spin_lock_irqsave(&bnad->bna_lock, flags);
1502 bna_stats_get(&bnad->bna);
1503 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1504 }
1505
1506 /*
1507 * Set up timer for DIM
1508 * Called with bnad->bna_lock held
1509 */
1510 void
1511 bnad_dim_timer_start(struct bnad *bnad)
1512 {
1513 if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED &&
1514 !test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) {
1515 setup_timer(&bnad->dim_timer, bnad_dim_timeout,
1516 (unsigned long)bnad);
1517 set_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags);
1518 mod_timer(&bnad->dim_timer,
1519 jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ));
1520 }
1521 }
1522
1523 /*
1524 * Set up timer for statistics
1525 * Called with mutex_lock(&bnad->conf_mutex) held
1526 */
1527 static void
1528 bnad_stats_timer_start(struct bnad *bnad)
1529 {
1530 unsigned long flags;
1531
1532 spin_lock_irqsave(&bnad->bna_lock, flags);
1533 if (!test_and_set_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) {
1534 setup_timer(&bnad->stats_timer, bnad_stats_timeout,
1535 (unsigned long)bnad);
1536 mod_timer(&bnad->stats_timer,
1537 jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ));
1538 }
1539 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1540 }
1541
1542 /*
1543 * Stops the stats timer
1544 * Called with mutex_lock(&bnad->conf_mutex) held
1545 */
1546 static void
1547 bnad_stats_timer_stop(struct bnad *bnad)
1548 {
1549 int to_del = 0;
1550 unsigned long flags;
1551
1552 spin_lock_irqsave(&bnad->bna_lock, flags);
1553 if (test_and_clear_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
1554 to_del = 1;
1555 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1556 if (to_del)
1557 del_timer_sync(&bnad->stats_timer);
1558 }
1559
1560 /* Utilities */
1561
1562 static void
1563 bnad_netdev_mc_list_get(struct net_device *netdev, u8 *mc_list)
1564 {
1565 int i = 1; /* Index 0 has broadcast address */
1566 struct netdev_hw_addr *mc_addr;
1567
1568 netdev_for_each_mc_addr(mc_addr, netdev) {
1569 memcpy(&mc_list[i * ETH_ALEN], &mc_addr->addr[0],
1570 ETH_ALEN);
1571 i++;
1572 }
1573 }
1574
1575 static int
1576 bnad_napi_poll_rx(struct napi_struct *napi, int budget)
1577 {
1578 struct bnad_rx_ctrl *rx_ctrl =
1579 container_of(napi, struct bnad_rx_ctrl, napi);
1580 struct bna_ccb *ccb;
1581 struct bnad *bnad;
1582 int rcvd = 0;
1583
1584 ccb = rx_ctrl->ccb;
1585
1586 bnad = ccb->bnad;
1587
1588 if (!netif_carrier_ok(bnad->netdev))
1589 goto poll_exit;
1590
1591 rcvd = bnad_poll_cq(bnad, ccb, budget);
1592 if (rcvd == budget)
1593 return rcvd;
1594
1595 poll_exit:
1596 napi_complete((napi));
1597
1598 BNAD_UPDATE_CTR(bnad, netif_rx_complete);
1599
1600 bnad_enable_rx_irq(bnad, ccb);
1601 return rcvd;
1602 }
1603
1604 static void
1605 bnad_napi_enable(struct bnad *bnad, u32 rx_id)
1606 {
1607 struct bnad_rx_ctrl *rx_ctrl;
1608 int i;
1609
1610 /* Initialize & enable NAPI */
1611 for (i = 0; i < bnad->num_rxp_per_rx; i++) {
1612 rx_ctrl = &bnad->rx_info[rx_id].rx_ctrl[i];
1613
1614 netif_napi_add(bnad->netdev, &rx_ctrl->napi,
1615 bnad_napi_poll_rx, 64);
1616
1617 napi_enable(&rx_ctrl->napi);
1618 }
1619 }
1620
1621 static void
1622 bnad_napi_disable(struct bnad *bnad, u32 rx_id)
1623 {
1624 int i;
1625
1626 /* First disable and then clean up */
1627 for (i = 0; i < bnad->num_rxp_per_rx; i++) {
1628 napi_disable(&bnad->rx_info[rx_id].rx_ctrl[i].napi);
1629 netif_napi_del(&bnad->rx_info[rx_id].rx_ctrl[i].napi);
1630 }
1631 }
1632
1633 /* Should be held with conf_lock held */
1634 void
1635 bnad_cleanup_tx(struct bnad *bnad, uint tx_id)
1636 {
1637 struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id];
1638 struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0];
1639 unsigned long flags;
1640
1641 if (!tx_info->tx)
1642 return;
1643
1644 init_completion(&bnad->bnad_completions.tx_comp);
1645 spin_lock_irqsave(&bnad->bna_lock, flags);
1646 bna_tx_disable(tx_info->tx, BNA_HARD_CLEANUP, bnad_cb_tx_disabled);
1647 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1648 wait_for_completion(&bnad->bnad_completions.tx_comp);
1649
1650 if (tx_info->tcb[0]->intr_type == BNA_INTR_T_MSIX)
1651 bnad_tx_msix_unregister(bnad, tx_info,
1652 bnad->num_txq_per_tx);
1653
1654 spin_lock_irqsave(&bnad->bna_lock, flags);
1655 bna_tx_destroy(tx_info->tx);
1656 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1657
1658 tx_info->tx = NULL;
1659
1660 if (0 == tx_id)
1661 tasklet_kill(&bnad->tx_free_tasklet);
1662
1663 bnad_tx_res_free(bnad, res_info);
1664 }
1665
1666 /* Should be held with conf_lock held */
1667 int
1668 bnad_setup_tx(struct bnad *bnad, uint tx_id)
1669 {
1670 int err;
1671 struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id];
1672 struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0];
1673 struct bna_intr_info *intr_info =
1674 &res_info[BNA_TX_RES_INTR_T_TXCMPL].res_u.intr_info;
1675 struct bna_tx_config *tx_config = &bnad->tx_config[tx_id];
1676 struct bna_tx_event_cbfn tx_cbfn;
1677 struct bna_tx *tx;
1678 unsigned long flags;
1679
1680 /* Initialize the Tx object configuration */
1681 tx_config->num_txq = bnad->num_txq_per_tx;
1682 tx_config->txq_depth = bnad->txq_depth;
1683 tx_config->tx_type = BNA_TX_T_REGULAR;
1684
1685 /* Initialize the tx event handlers */
1686 tx_cbfn.tcb_setup_cbfn = bnad_cb_tcb_setup;
1687 tx_cbfn.tcb_destroy_cbfn = bnad_cb_tcb_destroy;
1688 tx_cbfn.tx_stall_cbfn = bnad_cb_tx_stall;
1689 tx_cbfn.tx_resume_cbfn = bnad_cb_tx_resume;
1690 tx_cbfn.tx_cleanup_cbfn = bnad_cb_tx_cleanup;
1691
1692 /* Get BNA's resource requirement for one tx object */
1693 spin_lock_irqsave(&bnad->bna_lock, flags);
1694 bna_tx_res_req(bnad->num_txq_per_tx,
1695 bnad->txq_depth, res_info);
1696 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1697
1698 /* Fill Unmap Q memory requirements */
1699 BNAD_FILL_UNMAPQ_MEM_REQ(
1700 &res_info[BNA_TX_RES_MEM_T_UNMAPQ],
1701 bnad->num_txq_per_tx,
1702 BNAD_TX_UNMAPQ_DEPTH);
1703
1704 /* Allocate resources */
1705 err = bnad_tx_res_alloc(bnad, res_info, tx_id);
1706 if (err)
1707 return err;
1708
1709 /* Ask BNA to create one Tx object, supplying required resources */
1710 spin_lock_irqsave(&bnad->bna_lock, flags);
1711 tx = bna_tx_create(&bnad->bna, bnad, tx_config, &tx_cbfn, res_info,
1712 tx_info);
1713 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1714 if (!tx)
1715 goto err_return;
1716 tx_info->tx = tx;
1717
1718 /* Register ISR for the Tx object */
1719 if (intr_info->intr_type == BNA_INTR_T_MSIX) {
1720 err = bnad_tx_msix_register(bnad, tx_info,
1721 tx_id, bnad->num_txq_per_tx);
1722 if (err)
1723 goto err_return;
1724 }
1725
1726 spin_lock_irqsave(&bnad->bna_lock, flags);
1727 bna_tx_enable(tx);
1728 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1729
1730 return 0;
1731
1732 err_return:
1733 bnad_tx_res_free(bnad, res_info);
1734 return err;
1735 }
1736
1737 /* Setup the rx config for bna_rx_create */
1738 /* bnad decides the configuration */
1739 static void
1740 bnad_init_rx_config(struct bnad *bnad, struct bna_rx_config *rx_config)
1741 {
1742 rx_config->rx_type = BNA_RX_T_REGULAR;
1743 rx_config->num_paths = bnad->num_rxp_per_rx;
1744
1745 if (bnad->num_rxp_per_rx > 1) {
1746 rx_config->rss_status = BNA_STATUS_T_ENABLED;
1747 rx_config->rss_config.hash_type =
1748 (BFI_RSS_T_V4_TCP |
1749 BFI_RSS_T_V6_TCP |
1750 BFI_RSS_T_V4_IP |
1751 BFI_RSS_T_V6_IP);
1752 rx_config->rss_config.hash_mask =
1753 bnad->num_rxp_per_rx - 1;
1754 get_random_bytes(rx_config->rss_config.toeplitz_hash_key,
1755 sizeof(rx_config->rss_config.toeplitz_hash_key));
1756 } else {
1757 rx_config->rss_status = BNA_STATUS_T_DISABLED;
1758 memset(&rx_config->rss_config, 0,
1759 sizeof(rx_config->rss_config));
1760 }
1761 rx_config->rxp_type = BNA_RXP_SLR;
1762 rx_config->q_depth = bnad->rxq_depth;
1763
1764 rx_config->small_buff_size = BFI_SMALL_RXBUF_SIZE;
1765
1766 rx_config->vlan_strip_status = BNA_STATUS_T_ENABLED;
1767 }
1768
1769 /* Called with mutex_lock(&bnad->conf_mutex) held */
1770 void
1771 bnad_cleanup_rx(struct bnad *bnad, uint rx_id)
1772 {
1773 struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id];
1774 struct bna_rx_config *rx_config = &bnad->rx_config[rx_id];
1775 struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0];
1776 unsigned long flags;
1777 int dim_timer_del = 0;
1778
1779 if (!rx_info->rx)
1780 return;
1781
1782 if (0 == rx_id) {
1783 spin_lock_irqsave(&bnad->bna_lock, flags);
1784 dim_timer_del = bnad_dim_timer_running(bnad);
1785 if (dim_timer_del)
1786 clear_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags);
1787 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1788 if (dim_timer_del)
1789 del_timer_sync(&bnad->dim_timer);
1790 }
1791
1792 bnad_napi_disable(bnad, rx_id);
1793
1794 init_completion(&bnad->bnad_completions.rx_comp);
1795 spin_lock_irqsave(&bnad->bna_lock, flags);
1796 bna_rx_disable(rx_info->rx, BNA_HARD_CLEANUP, bnad_cb_rx_disabled);
1797 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1798 wait_for_completion(&bnad->bnad_completions.rx_comp);
1799
1800 if (rx_info->rx_ctrl[0].ccb->intr_type == BNA_INTR_T_MSIX)
1801 bnad_rx_msix_unregister(bnad, rx_info, rx_config->num_paths);
1802
1803 spin_lock_irqsave(&bnad->bna_lock, flags);
1804 bna_rx_destroy(rx_info->rx);
1805 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1806
1807 rx_info->rx = NULL;
1808
1809 bnad_rx_res_free(bnad, res_info);
1810 }
1811
1812 /* Called with mutex_lock(&bnad->conf_mutex) held */
1813 int
1814 bnad_setup_rx(struct bnad *bnad, uint rx_id)
1815 {
1816 int err;
1817 struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id];
1818 struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0];
1819 struct bna_intr_info *intr_info =
1820 &res_info[BNA_RX_RES_T_INTR].res_u.intr_info;
1821 struct bna_rx_config *rx_config = &bnad->rx_config[rx_id];
1822 struct bna_rx_event_cbfn rx_cbfn;
1823 struct bna_rx *rx;
1824 unsigned long flags;
1825
1826 /* Initialize the Rx object configuration */
1827 bnad_init_rx_config(bnad, rx_config);
1828
1829 /* Initialize the Rx event handlers */
1830 rx_cbfn.rcb_setup_cbfn = bnad_cb_rcb_setup;
1831 rx_cbfn.rcb_destroy_cbfn = bnad_cb_rcb_destroy;
1832 rx_cbfn.ccb_setup_cbfn = bnad_cb_ccb_setup;
1833 rx_cbfn.ccb_destroy_cbfn = bnad_cb_ccb_destroy;
1834 rx_cbfn.rx_cleanup_cbfn = bnad_cb_rx_cleanup;
1835 rx_cbfn.rx_post_cbfn = bnad_cb_rx_post;
1836
1837 /* Get BNA's resource requirement for one Rx object */
1838 spin_lock_irqsave(&bnad->bna_lock, flags);
1839 bna_rx_res_req(rx_config, res_info);
1840 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1841
1842 /* Fill Unmap Q memory requirements */
1843 BNAD_FILL_UNMAPQ_MEM_REQ(
1844 &res_info[BNA_RX_RES_MEM_T_UNMAPQ],
1845 rx_config->num_paths +
1846 ((rx_config->rxp_type == BNA_RXP_SINGLE) ? 0 :
1847 rx_config->num_paths), BNAD_RX_UNMAPQ_DEPTH);
1848
1849 /* Allocate resource */
1850 err = bnad_rx_res_alloc(bnad, res_info, rx_id);
1851 if (err)
1852 return err;
1853
1854 /* Ask BNA to create one Rx object, supplying required resources */
1855 spin_lock_irqsave(&bnad->bna_lock, flags);
1856 rx = bna_rx_create(&bnad->bna, bnad, rx_config, &rx_cbfn, res_info,
1857 rx_info);
1858 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1859 if (!rx)
1860 goto err_return;
1861 rx_info->rx = rx;
1862
1863 /* Register ISR for the Rx object */
1864 if (intr_info->intr_type == BNA_INTR_T_MSIX) {
1865 err = bnad_rx_msix_register(bnad, rx_info, rx_id,
1866 rx_config->num_paths);
1867 if (err)
1868 goto err_return;
1869 }
1870
1871 /* Enable NAPI */
1872 bnad_napi_enable(bnad, rx_id);
1873
1874 spin_lock_irqsave(&bnad->bna_lock, flags);
1875 if (0 == rx_id) {
1876 /* Set up Dynamic Interrupt Moderation Vector */
1877 if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED)
1878 bna_rx_dim_reconfig(&bnad->bna, bna_napi_dim_vector);
1879
1880 /* Enable VLAN filtering only on the default Rx */
1881 bna_rx_vlanfilter_enable(rx);
1882
1883 /* Start the DIM timer */
1884 bnad_dim_timer_start(bnad);
1885 }
1886
1887 bna_rx_enable(rx);
1888 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1889
1890 return 0;
1891
1892 err_return:
1893 bnad_cleanup_rx(bnad, rx_id);
1894 return err;
1895 }
1896
1897 /* Called with conf_lock & bnad->bna_lock held */
1898 void
1899 bnad_tx_coalescing_timeo_set(struct bnad *bnad)
1900 {
1901 struct bnad_tx_info *tx_info;
1902
1903 tx_info = &bnad->tx_info[0];
1904 if (!tx_info->tx)
1905 return;
1906
1907 bna_tx_coalescing_timeo_set(tx_info->tx, bnad->tx_coalescing_timeo);
1908 }
1909
1910 /* Called with conf_lock & bnad->bna_lock held */
1911 void
1912 bnad_rx_coalescing_timeo_set(struct bnad *bnad)
1913 {
1914 struct bnad_rx_info *rx_info;
1915 int i;
1916
1917 for (i = 0; i < bnad->num_rx; i++) {
1918 rx_info = &bnad->rx_info[i];
1919 if (!rx_info->rx)
1920 continue;
1921 bna_rx_coalescing_timeo_set(rx_info->rx,
1922 bnad->rx_coalescing_timeo);
1923 }
1924 }
1925
1926 /*
1927 * Called with bnad->bna_lock held
1928 */
1929 static int
1930 bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr)
1931 {
1932 int ret;
1933
1934 if (!is_valid_ether_addr(mac_addr))
1935 return -EADDRNOTAVAIL;
1936
1937 /* If datapath is down, pretend everything went through */
1938 if (!bnad->rx_info[0].rx)
1939 return 0;
1940
1941 ret = bna_rx_ucast_set(bnad->rx_info[0].rx, mac_addr, NULL);
1942 if (ret != BNA_CB_SUCCESS)
1943 return -EADDRNOTAVAIL;
1944
1945 return 0;
1946 }
1947
1948 /* Should be called with conf_lock held */
1949 static int
1950 bnad_enable_default_bcast(struct bnad *bnad)
1951 {
1952 struct bnad_rx_info *rx_info = &bnad->rx_info[0];
1953 int ret;
1954 unsigned long flags;
1955
1956 init_completion(&bnad->bnad_completions.mcast_comp);
1957
1958 spin_lock_irqsave(&bnad->bna_lock, flags);
1959 ret = bna_rx_mcast_add(rx_info->rx, (u8 *)bnad_bcast_addr,
1960 bnad_cb_rx_mcast_add);
1961 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1962
1963 if (ret == BNA_CB_SUCCESS)
1964 wait_for_completion(&bnad->bnad_completions.mcast_comp);
1965 else
1966 return -ENODEV;
1967
1968 if (bnad->bnad_completions.mcast_comp_status != BNA_CB_SUCCESS)
1969 return -ENODEV;
1970
1971 return 0;
1972 }
1973
1974 /* Called with bnad_conf_lock() held */
1975 static void
1976 bnad_restore_vlans(struct bnad *bnad, u32 rx_id)
1977 {
1978 u16 vid;
1979 unsigned long flags;
1980
1981 BUG_ON(!(VLAN_N_VID == (BFI_MAX_VLAN + 1)));
1982
1983 for_each_set_bit(vid, bnad->active_vlans, VLAN_N_VID) {
1984 spin_lock_irqsave(&bnad->bna_lock, flags);
1985 bna_rx_vlan_add(bnad->rx_info[rx_id].rx, vid);
1986 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1987 }
1988 }
1989
1990 /* Statistics utilities */
1991 void
1992 bnad_netdev_qstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats)
1993 {
1994 int i, j;
1995
1996 for (i = 0; i < bnad->num_rx; i++) {
1997 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
1998 if (bnad->rx_info[i].rx_ctrl[j].ccb) {
1999 stats->rx_packets += bnad->rx_info[i].
2000 rx_ctrl[j].ccb->rcb[0]->rxq->rx_packets;
2001 stats->rx_bytes += bnad->rx_info[i].
2002 rx_ctrl[j].ccb->rcb[0]->rxq->rx_bytes;
2003 if (bnad->rx_info[i].rx_ctrl[j].ccb->rcb[1] &&
2004 bnad->rx_info[i].rx_ctrl[j].ccb->
2005 rcb[1]->rxq) {
2006 stats->rx_packets +=
2007 bnad->rx_info[i].rx_ctrl[j].
2008 ccb->rcb[1]->rxq->rx_packets;
2009 stats->rx_bytes +=
2010 bnad->rx_info[i].rx_ctrl[j].
2011 ccb->rcb[1]->rxq->rx_bytes;
2012 }
2013 }
2014 }
2015 }
2016 for (i = 0; i < bnad->num_tx; i++) {
2017 for (j = 0; j < bnad->num_txq_per_tx; j++) {
2018 if (bnad->tx_info[i].tcb[j]) {
2019 stats->tx_packets +=
2020 bnad->tx_info[i].tcb[j]->txq->tx_packets;
2021 stats->tx_bytes +=
2022 bnad->tx_info[i].tcb[j]->txq->tx_bytes;
2023 }
2024 }
2025 }
2026 }
2027
2028 /*
2029 * Must be called with the bna_lock held.
2030 */
2031 void
2032 bnad_netdev_hwstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats)
2033 {
2034 struct bfi_ll_stats_mac *mac_stats;
2035 u64 bmap;
2036 int i;
2037
2038 mac_stats = &bnad->stats.bna_stats->hw_stats->mac_stats;
2039 stats->rx_errors =
2040 mac_stats->rx_fcs_error + mac_stats->rx_alignment_error +
2041 mac_stats->rx_frame_length_error + mac_stats->rx_code_error +
2042 mac_stats->rx_undersize;
2043 stats->tx_errors = mac_stats->tx_fcs_error +
2044 mac_stats->tx_undersize;
2045 stats->rx_dropped = mac_stats->rx_drop;
2046 stats->tx_dropped = mac_stats->tx_drop;
2047 stats->multicast = mac_stats->rx_multicast;
2048 stats->collisions = mac_stats->tx_total_collision;
2049
2050 stats->rx_length_errors = mac_stats->rx_frame_length_error;
2051
2052 /* receive ring buffer overflow ?? */
2053
2054 stats->rx_crc_errors = mac_stats->rx_fcs_error;
2055 stats->rx_frame_errors = mac_stats->rx_alignment_error;
2056 /* recv'r fifo overrun */
2057 bmap = (u64)bnad->stats.bna_stats->rxf_bmap[0] |
2058 ((u64)bnad->stats.bna_stats->rxf_bmap[1] << 32);
2059 for (i = 0; bmap && (i < BFI_LL_RXF_ID_MAX); i++) {
2060 if (bmap & 1) {
2061 stats->rx_fifo_errors +=
2062 bnad->stats.bna_stats->
2063 hw_stats->rxf_stats[i].frame_drops;
2064 break;
2065 }
2066 bmap >>= 1;
2067 }
2068 }
2069
2070 static void
2071 bnad_mbox_irq_sync(struct bnad *bnad)
2072 {
2073 u32 irq;
2074 unsigned long flags;
2075
2076 spin_lock_irqsave(&bnad->bna_lock, flags);
2077 if (bnad->cfg_flags & BNAD_CF_MSIX)
2078 irq = bnad->msix_table[BNAD_MAILBOX_MSIX_INDEX].vector;
2079 else
2080 irq = bnad->pcidev->irq;
2081 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2082
2083 synchronize_irq(irq);
2084 }
2085
2086 /* Utility used by bnad_start_xmit, for doing TSO */
2087 static int
2088 bnad_tso_prepare(struct bnad *bnad, struct sk_buff *skb)
2089 {
2090 int err;
2091
2092 /* SKB_GSO_TCPV4 and SKB_GSO_TCPV6 is defined since 2.6.18. */
2093 BUG_ON(!(skb_shinfo(skb)->gso_type == SKB_GSO_TCPV4 ||
2094 skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6));
2095 if (skb_header_cloned(skb)) {
2096 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2097 if (err) {
2098 BNAD_UPDATE_CTR(bnad, tso_err);
2099 return err;
2100 }
2101 }
2102
2103 /*
2104 * For TSO, the TCP checksum field is seeded with pseudo-header sum
2105 * excluding the length field.
2106 */
2107 if (skb->protocol == htons(ETH_P_IP)) {
2108 struct iphdr *iph = ip_hdr(skb);
2109
2110 /* Do we really need these? */
2111 iph->tot_len = 0;
2112 iph->check = 0;
2113
2114 tcp_hdr(skb)->check =
2115 ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
2116 IPPROTO_TCP, 0);
2117 BNAD_UPDATE_CTR(bnad, tso4);
2118 } else {
2119 struct ipv6hdr *ipv6h = ipv6_hdr(skb);
2120
2121 BUG_ON(!(skb->protocol == htons(ETH_P_IPV6)));
2122 ipv6h->payload_len = 0;
2123 tcp_hdr(skb)->check =
2124 ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, 0,
2125 IPPROTO_TCP, 0);
2126 BNAD_UPDATE_CTR(bnad, tso6);
2127 }
2128
2129 return 0;
2130 }
2131
2132 /*
2133 * Initialize Q numbers depending on Rx Paths
2134 * Called with bnad->bna_lock held, because of cfg_flags
2135 * access.
2136 */
2137 static void
2138 bnad_q_num_init(struct bnad *bnad)
2139 {
2140 int rxps;
2141
2142 rxps = min((uint)num_online_cpus(),
2143 (uint)(BNAD_MAX_RXS * BNAD_MAX_RXPS_PER_RX));
2144
2145 if (!(bnad->cfg_flags & BNAD_CF_MSIX))
2146 rxps = 1; /* INTx */
2147
2148 bnad->num_rx = 1;
2149 bnad->num_tx = 1;
2150 bnad->num_rxp_per_rx = rxps;
2151 bnad->num_txq_per_tx = BNAD_TXQ_NUM;
2152 }
2153
2154 /*
2155 * Adjusts the Q numbers, given a number of msix vectors
2156 * Give preference to RSS as opposed to Tx priority Queues,
2157 * in such a case, just use 1 Tx Q
2158 * Called with bnad->bna_lock held b'cos of cfg_flags access
2159 */
2160 static void
2161 bnad_q_num_adjust(struct bnad *bnad, int msix_vectors)
2162 {
2163 bnad->num_txq_per_tx = 1;
2164 if ((msix_vectors >= (bnad->num_tx * bnad->num_txq_per_tx) +
2165 bnad_rxqs_per_cq + BNAD_MAILBOX_MSIX_VECTORS) &&
2166 (bnad->cfg_flags & BNAD_CF_MSIX)) {
2167 bnad->num_rxp_per_rx = msix_vectors -
2168 (bnad->num_tx * bnad->num_txq_per_tx) -
2169 BNAD_MAILBOX_MSIX_VECTORS;
2170 } else
2171 bnad->num_rxp_per_rx = 1;
2172 }
2173
2174 /* Enable / disable device */
2175 static void
2176 bnad_device_disable(struct bnad *bnad)
2177 {
2178 unsigned long flags;
2179
2180 init_completion(&bnad->bnad_completions.ioc_comp);
2181
2182 spin_lock_irqsave(&bnad->bna_lock, flags);
2183 bna_device_disable(&bnad->bna.device, BNA_HARD_CLEANUP);
2184 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2185
2186 wait_for_completion(&bnad->bnad_completions.ioc_comp);
2187 }
2188
2189 static int
2190 bnad_device_enable(struct bnad *bnad)
2191 {
2192 int err = 0;
2193 unsigned long flags;
2194
2195 init_completion(&bnad->bnad_completions.ioc_comp);
2196
2197 spin_lock_irqsave(&bnad->bna_lock, flags);
2198 bna_device_enable(&bnad->bna.device);
2199 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2200
2201 wait_for_completion(&bnad->bnad_completions.ioc_comp);
2202
2203 if (bnad->bnad_completions.ioc_comp_status)
2204 err = bnad->bnad_completions.ioc_comp_status;
2205
2206 return err;
2207 }
2208
2209 /* Free BNA resources */
2210 static void
2211 bnad_res_free(struct bnad *bnad)
2212 {
2213 int i;
2214 struct bna_res_info *res_info = &bnad->res_info[0];
2215
2216 for (i = 0; i < BNA_RES_T_MAX; i++) {
2217 if (res_info[i].res_type == BNA_RES_T_MEM)
2218 bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
2219 else
2220 bnad_mbox_irq_free(bnad, &res_info[i].res_u.intr_info);
2221 }
2222 }
2223
2224 /* Allocates memory and interrupt resources for BNA */
2225 static int
2226 bnad_res_alloc(struct bnad *bnad)
2227 {
2228 int i, err;
2229 struct bna_res_info *res_info = &bnad->res_info[0];
2230
2231 for (i = 0; i < BNA_RES_T_MAX; i++) {
2232 if (res_info[i].res_type == BNA_RES_T_MEM)
2233 err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info);
2234 else
2235 err = bnad_mbox_irq_alloc(bnad,
2236 &res_info[i].res_u.intr_info);
2237 if (err)
2238 goto err_return;
2239 }
2240 return 0;
2241
2242 err_return:
2243 bnad_res_free(bnad);
2244 return err;
2245 }
2246
2247 /* Interrupt enable / disable */
2248 static void
2249 bnad_enable_msix(struct bnad *bnad)
2250 {
2251 int i, ret;
2252 unsigned long flags;
2253
2254 spin_lock_irqsave(&bnad->bna_lock, flags);
2255 if (!(bnad->cfg_flags & BNAD_CF_MSIX)) {
2256 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2257 return;
2258 }
2259 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2260
2261 if (bnad->msix_table)
2262 return;
2263
2264 bnad->msix_table =
2265 kcalloc(bnad->msix_num, sizeof(struct msix_entry), GFP_KERNEL);
2266
2267 if (!bnad->msix_table)
2268 goto intx_mode;
2269
2270 for (i = 0; i < bnad->msix_num; i++)
2271 bnad->msix_table[i].entry = i;
2272
2273 ret = pci_enable_msix(bnad->pcidev, bnad->msix_table, bnad->msix_num);
2274 if (ret > 0) {
2275 /* Not enough MSI-X vectors. */
2276
2277 spin_lock_irqsave(&bnad->bna_lock, flags);
2278 /* ret = #of vectors that we got */
2279 bnad_q_num_adjust(bnad, ret);
2280 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2281
2282 bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx)
2283 + (bnad->num_rx
2284 * bnad->num_rxp_per_rx) +
2285 BNAD_MAILBOX_MSIX_VECTORS;
2286
2287 /* Try once more with adjusted numbers */
2288 /* If this fails, fall back to INTx */
2289 ret = pci_enable_msix(bnad->pcidev, bnad->msix_table,
2290 bnad->msix_num);
2291 if (ret)
2292 goto intx_mode;
2293
2294 } else if (ret < 0)
2295 goto intx_mode;
2296 return;
2297
2298 intx_mode:
2299
2300 kfree(bnad->msix_table);
2301 bnad->msix_table = NULL;
2302 bnad->msix_num = 0;
2303 spin_lock_irqsave(&bnad->bna_lock, flags);
2304 bnad->cfg_flags &= ~BNAD_CF_MSIX;
2305 bnad_q_num_init(bnad);
2306 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2307 }
2308
2309 static void
2310 bnad_disable_msix(struct bnad *bnad)
2311 {
2312 u32 cfg_flags;
2313 unsigned long flags;
2314
2315 spin_lock_irqsave(&bnad->bna_lock, flags);
2316 cfg_flags = bnad->cfg_flags;
2317 if (bnad->cfg_flags & BNAD_CF_MSIX)
2318 bnad->cfg_flags &= ~BNAD_CF_MSIX;
2319 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2320
2321 if (cfg_flags & BNAD_CF_MSIX) {
2322 pci_disable_msix(bnad->pcidev);
2323 kfree(bnad->msix_table);
2324 bnad->msix_table = NULL;
2325 }
2326 }
2327
2328 /* Netdev entry points */
2329 static int
2330 bnad_open(struct net_device *netdev)
2331 {
2332 int err;
2333 struct bnad *bnad = netdev_priv(netdev);
2334 struct bna_pause_config pause_config;
2335 int mtu;
2336 unsigned long flags;
2337
2338 mutex_lock(&bnad->conf_mutex);
2339
2340 /* Tx */
2341 err = bnad_setup_tx(bnad, 0);
2342 if (err)
2343 goto err_return;
2344
2345 /* Rx */
2346 err = bnad_setup_rx(bnad, 0);
2347 if (err)
2348 goto cleanup_tx;
2349
2350 /* Port */
2351 pause_config.tx_pause = 0;
2352 pause_config.rx_pause = 0;
2353
2354 mtu = ETH_HLEN + bnad->netdev->mtu + ETH_FCS_LEN;
2355
2356 spin_lock_irqsave(&bnad->bna_lock, flags);
2357 bna_port_mtu_set(&bnad->bna.port, mtu, NULL);
2358 bna_port_pause_config(&bnad->bna.port, &pause_config, NULL);
2359 bna_port_enable(&bnad->bna.port);
2360 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2361
2362 /* Enable broadcast */
2363 bnad_enable_default_bcast(bnad);
2364
2365 /* Restore VLANs, if any */
2366 bnad_restore_vlans(bnad, 0);
2367
2368 /* Set the UCAST address */
2369 spin_lock_irqsave(&bnad->bna_lock, flags);
2370 bnad_mac_addr_set_locked(bnad, netdev->dev_addr);
2371 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2372
2373 /* Start the stats timer */
2374 bnad_stats_timer_start(bnad);
2375
2376 mutex_unlock(&bnad->conf_mutex);
2377
2378 return 0;
2379
2380 cleanup_tx:
2381 bnad_cleanup_tx(bnad, 0);
2382
2383 err_return:
2384 mutex_unlock(&bnad->conf_mutex);
2385 return err;
2386 }
2387
2388 static int
2389 bnad_stop(struct net_device *netdev)
2390 {
2391 struct bnad *bnad = netdev_priv(netdev);
2392 unsigned long flags;
2393
2394 mutex_lock(&bnad->conf_mutex);
2395
2396 /* Stop the stats timer */
2397 bnad_stats_timer_stop(bnad);
2398
2399 init_completion(&bnad->bnad_completions.port_comp);
2400
2401 spin_lock_irqsave(&bnad->bna_lock, flags);
2402 bna_port_disable(&bnad->bna.port, BNA_HARD_CLEANUP,
2403 bnad_cb_port_disabled);
2404 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2405
2406 wait_for_completion(&bnad->bnad_completions.port_comp);
2407
2408 bnad_cleanup_tx(bnad, 0);
2409 bnad_cleanup_rx(bnad, 0);
2410
2411 /* Synchronize mailbox IRQ */
2412 bnad_mbox_irq_sync(bnad);
2413
2414 mutex_unlock(&bnad->conf_mutex);
2415
2416 return 0;
2417 }
2418
2419 /* TX */
2420 /*
2421 * bnad_start_xmit : Netdev entry point for Transmit
2422 * Called under lock held by net_device
2423 */
2424 static netdev_tx_t
2425 bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2426 {
2427 struct bnad *bnad = netdev_priv(netdev);
2428
2429 u16 txq_prod, vlan_tag = 0;
2430 u32 unmap_prod, wis, wis_used, wi_range;
2431 u32 vectors, vect_id, i, acked;
2432 u32 tx_id;
2433 int err;
2434
2435 struct bnad_tx_info *tx_info;
2436 struct bna_tcb *tcb;
2437 struct bnad_unmap_q *unmap_q;
2438 dma_addr_t dma_addr;
2439 struct bna_txq_entry *txqent;
2440 bna_txq_wi_ctrl_flag_t flags;
2441
2442 if (unlikely
2443 (skb->len <= ETH_HLEN || skb->len > BFI_TX_MAX_DATA_PER_PKT)) {
2444 dev_kfree_skb(skb);
2445 return NETDEV_TX_OK;
2446 }
2447
2448 tx_id = 0;
2449
2450 tx_info = &bnad->tx_info[tx_id];
2451 tcb = tx_info->tcb[tx_id];
2452 unmap_q = tcb->unmap_q;
2453
2454 /*
2455 * Takes care of the Tx that is scheduled between clearing the flag
2456 * and the netif_stop_queue() call.
2457 */
2458 if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) {
2459 dev_kfree_skb(skb);
2460 return NETDEV_TX_OK;
2461 }
2462
2463 vectors = 1 + skb_shinfo(skb)->nr_frags;
2464 if (vectors > BFI_TX_MAX_VECTORS_PER_PKT) {
2465 dev_kfree_skb(skb);
2466 return NETDEV_TX_OK;
2467 }
2468 wis = BNA_TXQ_WI_NEEDED(vectors); /* 4 vectors per work item */
2469 acked = 0;
2470 if (unlikely
2471 (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) ||
2472 vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) {
2473 if ((u16) (*tcb->hw_consumer_index) !=
2474 tcb->consumer_index &&
2475 !test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) {
2476 acked = bnad_free_txbufs(bnad, tcb);
2477 if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)))
2478 bna_ib_ack(tcb->i_dbell, acked);
2479 smp_mb__before_clear_bit();
2480 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
2481 } else {
2482 netif_stop_queue(netdev);
2483 BNAD_UPDATE_CTR(bnad, netif_queue_stop);
2484 }
2485
2486 smp_mb();
2487 /*
2488 * Check again to deal with race condition between
2489 * netif_stop_queue here, and netif_wake_queue in
2490 * interrupt handler which is not inside netif tx lock.
2491 */
2492 if (likely
2493 (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) ||
2494 vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) {
2495 BNAD_UPDATE_CTR(bnad, netif_queue_stop);
2496 return NETDEV_TX_BUSY;
2497 } else {
2498 netif_wake_queue(netdev);
2499 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
2500 }
2501 }
2502
2503 unmap_prod = unmap_q->producer_index;
2504 wis_used = 1;
2505 vect_id = 0;
2506 flags = 0;
2507
2508 txq_prod = tcb->producer_index;
2509 BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt, txqent, wi_range);
2510 BUG_ON(!(wi_range <= tcb->q_depth));
2511 txqent->hdr.wi.reserved = 0;
2512 txqent->hdr.wi.num_vectors = vectors;
2513 txqent->hdr.wi.opcode =
2514 htons((skb_is_gso(skb) ? BNA_TXQ_WI_SEND_LSO :
2515 BNA_TXQ_WI_SEND));
2516
2517 if (vlan_tx_tag_present(skb)) {
2518 vlan_tag = (u16) vlan_tx_tag_get(skb);
2519 flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN);
2520 }
2521 if (test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) {
2522 vlan_tag =
2523 (tcb->priority & 0x7) << 13 | (vlan_tag & 0x1fff);
2524 flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN);
2525 }
2526
2527 txqent->hdr.wi.vlan_tag = htons(vlan_tag);
2528
2529 if (skb_is_gso(skb)) {
2530 err = bnad_tso_prepare(bnad, skb);
2531 if (err) {
2532 dev_kfree_skb(skb);
2533 return NETDEV_TX_OK;
2534 }
2535 txqent->hdr.wi.lso_mss = htons(skb_is_gso(skb));
2536 flags |= (BNA_TXQ_WI_CF_IP_CKSUM | BNA_TXQ_WI_CF_TCP_CKSUM);
2537 txqent->hdr.wi.l4_hdr_size_n_offset =
2538 htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
2539 (tcp_hdrlen(skb) >> 2,
2540 skb_transport_offset(skb)));
2541 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
2542 u8 proto = 0;
2543
2544 txqent->hdr.wi.lso_mss = 0;
2545
2546 if (skb->protocol == htons(ETH_P_IP))
2547 proto = ip_hdr(skb)->protocol;
2548 else if (skb->protocol == htons(ETH_P_IPV6)) {
2549 /* nexthdr may not be TCP immediately. */
2550 proto = ipv6_hdr(skb)->nexthdr;
2551 }
2552 if (proto == IPPROTO_TCP) {
2553 flags |= BNA_TXQ_WI_CF_TCP_CKSUM;
2554 txqent->hdr.wi.l4_hdr_size_n_offset =
2555 htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
2556 (0, skb_transport_offset(skb)));
2557
2558 BNAD_UPDATE_CTR(bnad, tcpcsum_offload);
2559
2560 BUG_ON(!(skb_headlen(skb) >=
2561 skb_transport_offset(skb) + tcp_hdrlen(skb)));
2562
2563 } else if (proto == IPPROTO_UDP) {
2564 flags |= BNA_TXQ_WI_CF_UDP_CKSUM;
2565 txqent->hdr.wi.l4_hdr_size_n_offset =
2566 htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
2567 (0, skb_transport_offset(skb)));
2568
2569 BNAD_UPDATE_CTR(bnad, udpcsum_offload);
2570
2571 BUG_ON(!(skb_headlen(skb) >=
2572 skb_transport_offset(skb) +
2573 sizeof(struct udphdr)));
2574 } else {
2575 err = skb_checksum_help(skb);
2576 BNAD_UPDATE_CTR(bnad, csum_help);
2577 if (err) {
2578 dev_kfree_skb(skb);
2579 BNAD_UPDATE_CTR(bnad, csum_help_err);
2580 return NETDEV_TX_OK;
2581 }
2582 }
2583 } else {
2584 txqent->hdr.wi.lso_mss = 0;
2585 txqent->hdr.wi.l4_hdr_size_n_offset = 0;
2586 }
2587
2588 txqent->hdr.wi.flags = htons(flags);
2589
2590 txqent->hdr.wi.frame_length = htonl(skb->len);
2591
2592 unmap_q->unmap_array[unmap_prod].skb = skb;
2593 BUG_ON(!(skb_headlen(skb) <= BFI_TX_MAX_DATA_PER_VECTOR));
2594 txqent->vector[vect_id].length = htons(skb_headlen(skb));
2595 dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data,
2596 skb_headlen(skb), DMA_TO_DEVICE);
2597 dma_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr,
2598 dma_addr);
2599
2600 BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr);
2601 BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
2602
2603 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2604 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
2605 u32 size = frag->size;
2606
2607 if (++vect_id == BFI_TX_MAX_VECTORS_PER_WI) {
2608 vect_id = 0;
2609 if (--wi_range)
2610 txqent++;
2611 else {
2612 BNA_QE_INDX_ADD(txq_prod, wis_used,
2613 tcb->q_depth);
2614 wis_used = 0;
2615 BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt,
2616 txqent, wi_range);
2617 BUG_ON(!(wi_range <= tcb->q_depth));
2618 }
2619 wis_used++;
2620 txqent->hdr.wi_ext.opcode = htons(BNA_TXQ_WI_EXTENSION);
2621 }
2622
2623 BUG_ON(!(size <= BFI_TX_MAX_DATA_PER_VECTOR));
2624 txqent->vector[vect_id].length = htons(size);
2625 dma_addr = dma_map_page(&bnad->pcidev->dev, frag->page,
2626 frag->page_offset, size, DMA_TO_DEVICE);
2627 dma_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr,
2628 dma_addr);
2629 BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr);
2630 BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
2631 }
2632
2633 unmap_q->producer_index = unmap_prod;
2634 BNA_QE_INDX_ADD(txq_prod, wis_used, tcb->q_depth);
2635 tcb->producer_index = txq_prod;
2636
2637 smp_mb();
2638
2639 if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)))
2640 return NETDEV_TX_OK;
2641
2642 bna_txq_prod_indx_doorbell(tcb);
2643
2644 if ((u16) (*tcb->hw_consumer_index) != tcb->consumer_index)
2645 tasklet_schedule(&bnad->tx_free_tasklet);
2646
2647 return NETDEV_TX_OK;
2648 }
2649
2650 /*
2651 * Used spin_lock to synchronize reading of stats structures, which
2652 * is written by BNA under the same lock.
2653 */
2654 static struct rtnl_link_stats64 *
2655 bnad_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
2656 {
2657 struct bnad *bnad = netdev_priv(netdev);
2658 unsigned long flags;
2659
2660 spin_lock_irqsave(&bnad->bna_lock, flags);
2661
2662 bnad_netdev_qstats_fill(bnad, stats);
2663 bnad_netdev_hwstats_fill(bnad, stats);
2664
2665 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2666
2667 return stats;
2668 }
2669
2670 static void
2671 bnad_set_rx_mode(struct net_device *netdev)
2672 {
2673 struct bnad *bnad = netdev_priv(netdev);
2674 u32 new_mask, valid_mask;
2675 unsigned long flags;
2676
2677 spin_lock_irqsave(&bnad->bna_lock, flags);
2678
2679 new_mask = valid_mask = 0;
2680
2681 if (netdev->flags & IFF_PROMISC) {
2682 if (!(bnad->cfg_flags & BNAD_CF_PROMISC)) {
2683 new_mask = BNAD_RXMODE_PROMISC_DEFAULT;
2684 valid_mask = BNAD_RXMODE_PROMISC_DEFAULT;
2685 bnad->cfg_flags |= BNAD_CF_PROMISC;
2686 }
2687 } else {
2688 if (bnad->cfg_flags & BNAD_CF_PROMISC) {
2689 new_mask = ~BNAD_RXMODE_PROMISC_DEFAULT;
2690 valid_mask = BNAD_RXMODE_PROMISC_DEFAULT;
2691 bnad->cfg_flags &= ~BNAD_CF_PROMISC;
2692 }
2693 }
2694
2695 if (netdev->flags & IFF_ALLMULTI) {
2696 if (!(bnad->cfg_flags & BNAD_CF_ALLMULTI)) {
2697 new_mask |= BNA_RXMODE_ALLMULTI;
2698 valid_mask |= BNA_RXMODE_ALLMULTI;
2699 bnad->cfg_flags |= BNAD_CF_ALLMULTI;
2700 }
2701 } else {
2702 if (bnad->cfg_flags & BNAD_CF_ALLMULTI) {
2703 new_mask &= ~BNA_RXMODE_ALLMULTI;
2704 valid_mask |= BNA_RXMODE_ALLMULTI;
2705 bnad->cfg_flags &= ~BNAD_CF_ALLMULTI;
2706 }
2707 }
2708
2709 bna_rx_mode_set(bnad->rx_info[0].rx, new_mask, valid_mask, NULL);
2710
2711 if (!netdev_mc_empty(netdev)) {
2712 u8 *mcaddr_list;
2713 int mc_count = netdev_mc_count(netdev);
2714
2715 /* Index 0 holds the broadcast address */
2716 mcaddr_list =
2717 kzalloc((mc_count + 1) * ETH_ALEN,
2718 GFP_ATOMIC);
2719 if (!mcaddr_list)
2720 goto unlock;
2721
2722 memcpy(&mcaddr_list[0], &bnad_bcast_addr[0], ETH_ALEN);
2723
2724 /* Copy rest of the MC addresses */
2725 bnad_netdev_mc_list_get(netdev, mcaddr_list);
2726
2727 bna_rx_mcast_listset(bnad->rx_info[0].rx, mc_count + 1,
2728 mcaddr_list, NULL);
2729
2730 /* Should we enable BNAD_CF_ALLMULTI for err != 0 ? */
2731 kfree(mcaddr_list);
2732 }
2733 unlock:
2734 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2735 }
2736
2737 /*
2738 * bna_lock is used to sync writes to netdev->addr
2739 * conf_lock cannot be used since this call may be made
2740 * in a non-blocking context.
2741 */
2742 static int
2743 bnad_set_mac_address(struct net_device *netdev, void *mac_addr)
2744 {
2745 int err;
2746 struct bnad *bnad = netdev_priv(netdev);
2747 struct sockaddr *sa = (struct sockaddr *)mac_addr;
2748 unsigned long flags;
2749
2750 spin_lock_irqsave(&bnad->bna_lock, flags);
2751
2752 err = bnad_mac_addr_set_locked(bnad, sa->sa_data);
2753
2754 if (!err)
2755 memcpy(netdev->dev_addr, sa->sa_data, netdev->addr_len);
2756
2757 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2758
2759 return err;
2760 }
2761
2762 static int
2763 bnad_change_mtu(struct net_device *netdev, int new_mtu)
2764 {
2765 int mtu, err = 0;
2766 unsigned long flags;
2767
2768 struct bnad *bnad = netdev_priv(netdev);
2769
2770 if (new_mtu + ETH_HLEN < ETH_ZLEN || new_mtu > BNAD_JUMBO_MTU)
2771 return -EINVAL;
2772
2773 mutex_lock(&bnad->conf_mutex);
2774
2775 netdev->mtu = new_mtu;
2776
2777 mtu = ETH_HLEN + new_mtu + ETH_FCS_LEN;
2778
2779 spin_lock_irqsave(&bnad->bna_lock, flags);
2780 bna_port_mtu_set(&bnad->bna.port, mtu, NULL);
2781 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2782
2783 mutex_unlock(&bnad->conf_mutex);
2784 return err;
2785 }
2786
2787 static void
2788 bnad_vlan_rx_add_vid(struct net_device *netdev,
2789 unsigned short vid)
2790 {
2791 struct bnad *bnad = netdev_priv(netdev);
2792 unsigned long flags;
2793
2794 if (!bnad->rx_info[0].rx)
2795 return;
2796
2797 mutex_lock(&bnad->conf_mutex);
2798
2799 spin_lock_irqsave(&bnad->bna_lock, flags);
2800 bna_rx_vlan_add(bnad->rx_info[0].rx, vid);
2801 set_bit(vid, bnad->active_vlans);
2802 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2803
2804 mutex_unlock(&bnad->conf_mutex);
2805 }
2806
2807 static void
2808 bnad_vlan_rx_kill_vid(struct net_device *netdev,
2809 unsigned short vid)
2810 {
2811 struct bnad *bnad = netdev_priv(netdev);
2812 unsigned long flags;
2813
2814 if (!bnad->rx_info[0].rx)
2815 return;
2816
2817 mutex_lock(&bnad->conf_mutex);
2818
2819 spin_lock_irqsave(&bnad->bna_lock, flags);
2820 clear_bit(vid, bnad->active_vlans);
2821 bna_rx_vlan_del(bnad->rx_info[0].rx, vid);
2822 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2823
2824 mutex_unlock(&bnad->conf_mutex);
2825 }
2826
2827 #ifdef CONFIG_NET_POLL_CONTROLLER
2828 static void
2829 bnad_netpoll(struct net_device *netdev)
2830 {
2831 struct bnad *bnad = netdev_priv(netdev);
2832 struct bnad_rx_info *rx_info;
2833 struct bnad_rx_ctrl *rx_ctrl;
2834 u32 curr_mask;
2835 int i, j;
2836
2837 if (!(bnad->cfg_flags & BNAD_CF_MSIX)) {
2838 bna_intx_disable(&bnad->bna, curr_mask);
2839 bnad_isr(bnad->pcidev->irq, netdev);
2840 bna_intx_enable(&bnad->bna, curr_mask);
2841 } else {
2842 for (i = 0; i < bnad->num_rx; i++) {
2843 rx_info = &bnad->rx_info[i];
2844 if (!rx_info->rx)
2845 continue;
2846 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
2847 rx_ctrl = &rx_info->rx_ctrl[j];
2848 if (rx_ctrl->ccb) {
2849 bnad_disable_rx_irq(bnad,
2850 rx_ctrl->ccb);
2851 bnad_netif_rx_schedule_poll(bnad,
2852 rx_ctrl->ccb);
2853 }
2854 }
2855 }
2856 }
2857 }
2858 #endif
2859
2860 static const struct net_device_ops bnad_netdev_ops = {
2861 .ndo_open = bnad_open,
2862 .ndo_stop = bnad_stop,
2863 .ndo_start_xmit = bnad_start_xmit,
2864 .ndo_get_stats64 = bnad_get_stats64,
2865 .ndo_set_rx_mode = bnad_set_rx_mode,
2866 .ndo_set_multicast_list = bnad_set_rx_mode,
2867 .ndo_validate_addr = eth_validate_addr,
2868 .ndo_set_mac_address = bnad_set_mac_address,
2869 .ndo_change_mtu = bnad_change_mtu,
2870 .ndo_vlan_rx_add_vid = bnad_vlan_rx_add_vid,
2871 .ndo_vlan_rx_kill_vid = bnad_vlan_rx_kill_vid,
2872 #ifdef CONFIG_NET_POLL_CONTROLLER
2873 .ndo_poll_controller = bnad_netpoll
2874 #endif
2875 };
2876
2877 static void
2878 bnad_netdev_init(struct bnad *bnad, bool using_dac)
2879 {
2880 struct net_device *netdev = bnad->netdev;
2881
2882 netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
2883 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2884 NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_TX;
2885
2886 netdev->vlan_features = NETIF_F_SG | NETIF_F_HIGHDMA |
2887 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2888 NETIF_F_TSO | NETIF_F_TSO6;
2889
2890 netdev->features |= netdev->hw_features |
2891 NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER;
2892
2893 if (using_dac)
2894 netdev->features |= NETIF_F_HIGHDMA;
2895
2896 netdev->mem_start = bnad->mmio_start;
2897 netdev->mem_end = bnad->mmio_start + bnad->mmio_len - 1;
2898
2899 netdev->netdev_ops = &bnad_netdev_ops;
2900 bnad_set_ethtool_ops(netdev);
2901 }
2902
2903 /*
2904 * 1. Initialize the bnad structure
2905 * 2. Setup netdev pointer in pci_dev
2906 * 3. Initialze Tx free tasklet
2907 * 4. Initialize no. of TxQ & CQs & MSIX vectors
2908 */
2909 static int
2910 bnad_init(struct bnad *bnad,
2911 struct pci_dev *pdev, struct net_device *netdev)
2912 {
2913 unsigned long flags;
2914
2915 SET_NETDEV_DEV(netdev, &pdev->dev);
2916 pci_set_drvdata(pdev, netdev);
2917
2918 bnad->netdev = netdev;
2919 bnad->pcidev = pdev;
2920 bnad->mmio_start = pci_resource_start(pdev, 0);
2921 bnad->mmio_len = pci_resource_len(pdev, 0);
2922 bnad->bar0 = ioremap_nocache(bnad->mmio_start, bnad->mmio_len);
2923 if (!bnad->bar0) {
2924 dev_err(&pdev->dev, "ioremap for bar0 failed\n");
2925 pci_set_drvdata(pdev, NULL);
2926 return -ENOMEM;
2927 }
2928 pr_info("bar0 mapped to %p, len %llu\n", bnad->bar0,
2929 (unsigned long long) bnad->mmio_len);
2930
2931 spin_lock_irqsave(&bnad->bna_lock, flags);
2932 if (!bnad_msix_disable)
2933 bnad->cfg_flags = BNAD_CF_MSIX;
2934
2935 bnad->cfg_flags |= BNAD_CF_DIM_ENABLED;
2936
2937 bnad_q_num_init(bnad);
2938 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2939
2940 bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx) +
2941 (bnad->num_rx * bnad->num_rxp_per_rx) +
2942 BNAD_MAILBOX_MSIX_VECTORS;
2943
2944 bnad->txq_depth = BNAD_TXQ_DEPTH;
2945 bnad->rxq_depth = BNAD_RXQ_DEPTH;
2946
2947 bnad->tx_coalescing_timeo = BFI_TX_COALESCING_TIMEO;
2948 bnad->rx_coalescing_timeo = BFI_RX_COALESCING_TIMEO;
2949
2950 tasklet_init(&bnad->tx_free_tasklet, bnad_tx_free_tasklet,
2951 (unsigned long)bnad);
2952
2953 return 0;
2954 }
2955
2956 /*
2957 * Must be called after bnad_pci_uninit()
2958 * so that iounmap() and pci_set_drvdata(NULL)
2959 * happens only after PCI uninitialization.
2960 */
2961 static void
2962 bnad_uninit(struct bnad *bnad)
2963 {
2964 if (bnad->bar0)
2965 iounmap(bnad->bar0);
2966 pci_set_drvdata(bnad->pcidev, NULL);
2967 }
2968
2969 /*
2970 * Initialize locks
2971 a) Per device mutes used for serializing configuration
2972 changes from OS interface
2973 b) spin lock used to protect bna state machine
2974 */
2975 static void
2976 bnad_lock_init(struct bnad *bnad)
2977 {
2978 spin_lock_init(&bnad->bna_lock);
2979 mutex_init(&bnad->conf_mutex);
2980 }
2981
2982 static void
2983 bnad_lock_uninit(struct bnad *bnad)
2984 {
2985 mutex_destroy(&bnad->conf_mutex);
2986 }
2987
2988 /* PCI Initialization */
2989 static int
2990 bnad_pci_init(struct bnad *bnad,
2991 struct pci_dev *pdev, bool *using_dac)
2992 {
2993 int err;
2994
2995 err = pci_enable_device(pdev);
2996 if (err)
2997 return err;
2998 err = pci_request_regions(pdev, BNAD_NAME);
2999 if (err)
3000 goto disable_device;
3001 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
3002 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
3003 *using_dac = 1;
3004 } else {
3005 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
3006 if (err) {
3007 err = dma_set_coherent_mask(&pdev->dev,
3008 DMA_BIT_MASK(32));
3009 if (err)
3010 goto release_regions;
3011 }
3012 *using_dac = 0;
3013 }
3014 pci_set_master(pdev);
3015 return 0;
3016
3017 release_regions:
3018 pci_release_regions(pdev);
3019 disable_device:
3020 pci_disable_device(pdev);
3021
3022 return err;
3023 }
3024
3025 static void
3026 bnad_pci_uninit(struct pci_dev *pdev)
3027 {
3028 pci_release_regions(pdev);
3029 pci_disable_device(pdev);
3030 }
3031
3032 static int __devinit
3033 bnad_pci_probe(struct pci_dev *pdev,
3034 const struct pci_device_id *pcidev_id)
3035 {
3036 bool using_dac = false;
3037 int err;
3038 struct bnad *bnad;
3039 struct bna *bna;
3040 struct net_device *netdev;
3041 struct bfa_pcidev pcidev_info;
3042 unsigned long flags;
3043
3044 pr_info("bnad_pci_probe : (0x%p, 0x%p) PCI Func : (%d)\n",
3045 pdev, pcidev_id, PCI_FUNC(pdev->devfn));
3046
3047 mutex_lock(&bnad_fwimg_mutex);
3048 if (!cna_get_firmware_buf(pdev)) {
3049 mutex_unlock(&bnad_fwimg_mutex);
3050 pr_warn("Failed to load Firmware Image!\n");
3051 return -ENODEV;
3052 }
3053 mutex_unlock(&bnad_fwimg_mutex);
3054
3055 /*
3056 * Allocates sizeof(struct net_device + struct bnad)
3057 * bnad = netdev->priv
3058 */
3059 netdev = alloc_etherdev(sizeof(struct bnad));
3060 if (!netdev) {
3061 dev_err(&pdev->dev, "alloc_etherdev failed\n");
3062 err = -ENOMEM;
3063 return err;
3064 }
3065 bnad = netdev_priv(netdev);
3066
3067 /*
3068 * PCI initialization
3069 * Output : using_dac = 1 for 64 bit DMA
3070 * = 0 for 32 bit DMA
3071 */
3072 err = bnad_pci_init(bnad, pdev, &using_dac);
3073 if (err)
3074 goto free_netdev;
3075
3076 bnad_lock_init(bnad);
3077 /*
3078 * Initialize bnad structure
3079 * Setup relation between pci_dev & netdev
3080 * Init Tx free tasklet
3081 */
3082 err = bnad_init(bnad, pdev, netdev);
3083 if (err)
3084 goto pci_uninit;
3085 /* Initialize netdev structure, set up ethtool ops */
3086 bnad_netdev_init(bnad, using_dac);
3087
3088 /* Set link to down state */
3089 netif_carrier_off(netdev);
3090
3091 bnad_enable_msix(bnad);
3092
3093 /* Get resource requirement form bna */
3094 bna_res_req(&bnad->res_info[0]);
3095
3096 /* Allocate resources from bna */
3097 err = bnad_res_alloc(bnad);
3098 if (err)
3099 goto free_netdev;
3100
3101 bna = &bnad->bna;
3102
3103 /* Setup pcidev_info for bna_init() */
3104 pcidev_info.pci_slot = PCI_SLOT(bnad->pcidev->devfn);
3105 pcidev_info.pci_func = PCI_FUNC(bnad->pcidev->devfn);
3106 pcidev_info.device_id = bnad->pcidev->device;
3107 pcidev_info.pci_bar_kva = bnad->bar0;
3108
3109 mutex_lock(&bnad->conf_mutex);
3110
3111 spin_lock_irqsave(&bnad->bna_lock, flags);
3112 bna_init(bna, bnad, &pcidev_info, &bnad->res_info[0]);
3113 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3114
3115 bnad->stats.bna_stats = &bna->stats;
3116
3117 /* Set up timers */
3118 setup_timer(&bnad->bna.device.ioc.ioc_timer, bnad_ioc_timeout,
3119 ((unsigned long)bnad));
3120 setup_timer(&bnad->bna.device.ioc.hb_timer, bnad_ioc_hb_check,
3121 ((unsigned long)bnad));
3122 setup_timer(&bnad->bna.device.ioc.iocpf_timer, bnad_iocpf_timeout,
3123 ((unsigned long)bnad));
3124 setup_timer(&bnad->bna.device.ioc.sem_timer, bnad_iocpf_sem_timeout,
3125 ((unsigned long)bnad));
3126
3127 /* Now start the timer before calling IOC */
3128 mod_timer(&bnad->bna.device.ioc.iocpf_timer,
3129 jiffies + msecs_to_jiffies(BNA_IOC_TIMER_FREQ));
3130
3131 /*
3132 * Start the chip
3133 * Don't care even if err != 0, bna state machine will
3134 * deal with it
3135 */
3136 err = bnad_device_enable(bnad);
3137
3138 /* Get the burnt-in mac */
3139 spin_lock_irqsave(&bnad->bna_lock, flags);
3140 bna_port_mac_get(&bna->port, &bnad->perm_addr);
3141 bnad_set_netdev_perm_addr(bnad);
3142 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3143
3144 mutex_unlock(&bnad->conf_mutex);
3145
3146 /* Finally, reguister with net_device layer */
3147 err = register_netdev(netdev);
3148 if (err) {
3149 pr_err("BNA : Registering with netdev failed\n");
3150 goto disable_device;
3151 }
3152
3153 return 0;
3154
3155 disable_device:
3156 mutex_lock(&bnad->conf_mutex);
3157 bnad_device_disable(bnad);
3158 del_timer_sync(&bnad->bna.device.ioc.ioc_timer);
3159 del_timer_sync(&bnad->bna.device.ioc.sem_timer);
3160 del_timer_sync(&bnad->bna.device.ioc.hb_timer);
3161 spin_lock_irqsave(&bnad->bna_lock, flags);
3162 bna_uninit(bna);
3163 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3164 mutex_unlock(&bnad->conf_mutex);
3165
3166 bnad_res_free(bnad);
3167 bnad_disable_msix(bnad);
3168 pci_uninit:
3169 bnad_pci_uninit(pdev);
3170 bnad_lock_uninit(bnad);
3171 bnad_uninit(bnad);
3172 free_netdev:
3173 free_netdev(netdev);
3174 return err;
3175 }
3176
3177 static void __devexit
3178 bnad_pci_remove(struct pci_dev *pdev)
3179 {
3180 struct net_device *netdev = pci_get_drvdata(pdev);
3181 struct bnad *bnad;
3182 struct bna *bna;
3183 unsigned long flags;
3184
3185 if (!netdev)
3186 return;
3187
3188 pr_info("%s bnad_pci_remove\n", netdev->name);
3189 bnad = netdev_priv(netdev);
3190 bna = &bnad->bna;
3191
3192 unregister_netdev(netdev);
3193
3194 mutex_lock(&bnad->conf_mutex);
3195 bnad_device_disable(bnad);
3196 del_timer_sync(&bnad->bna.device.ioc.ioc_timer);
3197 del_timer_sync(&bnad->bna.device.ioc.sem_timer);
3198 del_timer_sync(&bnad->bna.device.ioc.hb_timer);
3199 spin_lock_irqsave(&bnad->bna_lock, flags);
3200 bna_uninit(bna);
3201 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3202 mutex_unlock(&bnad->conf_mutex);
3203
3204 bnad_res_free(bnad);
3205 bnad_disable_msix(bnad);
3206 bnad_pci_uninit(pdev);
3207 bnad_lock_uninit(bnad);
3208 bnad_uninit(bnad);
3209 free_netdev(netdev);
3210 }
3211
3212 static DEFINE_PCI_DEVICE_TABLE(bnad_pci_id_table) = {
3213 {
3214 PCI_DEVICE(PCI_VENDOR_ID_BROCADE,
3215 PCI_DEVICE_ID_BROCADE_CT),
3216 .class = PCI_CLASS_NETWORK_ETHERNET << 8,
3217 .class_mask = 0xffff00
3218 }, {0, }
3219 };
3220
3221 MODULE_DEVICE_TABLE(pci, bnad_pci_id_table);
3222
3223 static struct pci_driver bnad_pci_driver = {
3224 .name = BNAD_NAME,
3225 .id_table = bnad_pci_id_table,
3226 .probe = bnad_pci_probe,
3227 .remove = __devexit_p(bnad_pci_remove),
3228 };
3229
3230 static int __init
3231 bnad_module_init(void)
3232 {
3233 int err;
3234
3235 pr_info("Brocade 10G Ethernet driver - version: %s\n",
3236 BNAD_VERSION);
3237
3238 bfa_nw_ioc_auto_recover(bnad_ioc_auto_recover);
3239
3240 err = pci_register_driver(&bnad_pci_driver);
3241 if (err < 0) {
3242 pr_err("bna : PCI registration failed in module init "
3243 "(%d)\n", err);
3244 return err;
3245 }
3246
3247 return 0;
3248 }
3249
3250 static void __exit
3251 bnad_module_exit(void)
3252 {
3253 pci_unregister_driver(&bnad_pci_driver);
3254
3255 if (bfi_fw)
3256 release_firmware(bfi_fw);
3257 }
3258
3259 module_init(bnad_module_init);
3260 module_exit(bnad_module_exit);
3261
3262 MODULE_AUTHOR("Brocade");
3263 MODULE_LICENSE("GPL");
3264 MODULE_DESCRIPTION("Brocade 10G PCIe Ethernet driver");
3265 MODULE_VERSION(BNAD_VERSION);
3266 MODULE_FIRMWARE(CNA_FW_FILE_CT);
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