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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / bna / bnad.c
blob7e839b9cec221758c69afe3871d7cd884207bb80
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/netdevice.h>
19 #include <linux/skbuff.h>
20 #include <linux/etherdevice.h>
21 #include <linux/in.h>
22 #include <linux/ethtool.h>
23 #include <linux/if_vlan.h>
24 #include <linux/if_ether.h>
25 #include <linux/ip.h>
26
27 #include "bnad.h"
28 #include "bna.h"
29 #include "cna.h"
30
31 static DEFINE_MUTEX(bnad_fwimg_mutex);
32
33 /*
34 * Module params
35 */
36 static uint bnad_msix_disable;
37 module_param(bnad_msix_disable, uint, 0444);
38 MODULE_PARM_DESC(bnad_msix_disable, "Disable MSIX mode");
39
40 static uint bnad_ioc_auto_recover = 1;
41 module_param(bnad_ioc_auto_recover, uint, 0444);
42 MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery");
43
44 /*
45 * Global variables
46 */
47 u32 bnad_rxqs_per_cq = 2;
48
49 static const u8 bnad_bcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
50
51 /*
52 * Local MACROS
53 */
54 #define BNAD_TX_UNMAPQ_DEPTH (bnad->txq_depth * 2)
55
56 #define BNAD_RX_UNMAPQ_DEPTH (bnad->rxq_depth)
57
58 #define BNAD_GET_MBOX_IRQ(_bnad) \
59 (((_bnad)->cfg_flags & BNAD_CF_MSIX) ? \
60 ((_bnad)->msix_table[(_bnad)->msix_num - 1].vector) : \
61 ((_bnad)->pcidev->irq))
62
63 #define BNAD_FILL_UNMAPQ_MEM_REQ(_res_info, _num, _depth) \
64 do { \
65 (_res_info)->res_type = BNA_RES_T_MEM; \
66 (_res_info)->res_u.mem_info.mem_type = BNA_MEM_T_KVA; \
67 (_res_info)->res_u.mem_info.num = (_num); \
68 (_res_info)->res_u.mem_info.len = \
69 sizeof(struct bnad_unmap_q) + \
70 (sizeof(struct bnad_skb_unmap) * ((_depth) - 1)); \
71 } while (0)
72
73 /*
74 * Reinitialize completions in CQ, once Rx is taken down
75 */
76 static void
77 bnad_cq_cmpl_init(struct bnad *bnad, struct bna_ccb *ccb)
78 {
79 struct bna_cq_entry *cmpl, *next_cmpl;
80 unsigned int wi_range, wis = 0, ccb_prod = 0;
81 int i;
82
83 BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt, cmpl,
84 wi_range);
85
86 for (i = 0; i < ccb->q_depth; i++) {
87 wis++;
88 if (likely(--wi_range))
89 next_cmpl = cmpl + 1;
90 else {
91 BNA_QE_INDX_ADD(ccb_prod, wis, ccb->q_depth);
92 wis = 0;
93 BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt,
94 next_cmpl, wi_range);
95 }
96 cmpl->valid = 0;
97 cmpl = next_cmpl;
98 }
99 }
100
101 /*
102 * Frees all pending Tx Bufs
103 * At this point no activity is expected on the Q,
104 * so DMA unmap & freeing is fine.
105 */
106 static void
107 bnad_free_all_txbufs(struct bnad *bnad,
108 struct bna_tcb *tcb)
109 {
110 u16 unmap_cons;
111 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
112 struct bnad_skb_unmap *unmap_array;
113 struct sk_buff *skb = NULL;
114 int i;
115
116 unmap_array = unmap_q->unmap_array;
117
118 unmap_cons = 0;
119 while (unmap_cons < unmap_q->q_depth) {
120 skb = unmap_array[unmap_cons].skb;
121 if (!skb) {
122 unmap_cons++;
123 continue;
124 }
125 unmap_array[unmap_cons].skb = NULL;
126
127 pci_unmap_single(bnad->pcidev,
128 pci_unmap_addr(&unmap_array[unmap_cons],
129 dma_addr), skb_headlen(skb),
130 PCI_DMA_TODEVICE);
131
132 pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
133 unmap_cons++;
134 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
135 pci_unmap_page(bnad->pcidev,
136 pci_unmap_addr(&unmap_array[unmap_cons],
137 dma_addr),
138 skb_shinfo(skb)->frags[i].size,
139 PCI_DMA_TODEVICE);
140 pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
141 0);
142 unmap_cons++;
143 }
144 dev_kfree_skb_any(skb);
145 }
146 }
147
148 /* Data Path Handlers */
149
150 /*
151 * bnad_free_txbufs : Frees the Tx bufs on Tx completion
152 * Can be called in a) Interrupt context
153 * b) Sending context
154 * c) Tasklet context
155 */
156 static u32
157 bnad_free_txbufs(struct bnad *bnad,
158 struct bna_tcb *tcb)
159 {
160 u32 sent_packets = 0, sent_bytes = 0;
161 u16 wis, unmap_cons, updated_hw_cons;
162 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
163 struct bnad_skb_unmap *unmap_array;
164 struct sk_buff *skb;
165 int i;
166
167 /*
168 * Just return if TX is stopped. This check is useful
169 * when bnad_free_txbufs() runs out of a tasklet scheduled
170 * before bnad_cb_tx_cleanup() cleared BNAD_RF_TX_STARTED bit
171 * but this routine runs actually after the cleanup has been
172 * executed.
173 */
174 if (!test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))
175 return 0;
176
177 updated_hw_cons = *(tcb->hw_consumer_index);
178
179 wis = BNA_Q_INDEX_CHANGE(tcb->consumer_index,
180 updated_hw_cons, tcb->q_depth);
181
182 BUG_ON(!(wis <= BNA_QE_IN_USE_CNT(tcb, tcb->q_depth)));
183
184 unmap_array = unmap_q->unmap_array;
185 unmap_cons = unmap_q->consumer_index;
186
187 prefetch(&unmap_array[unmap_cons + 1]);
188 while (wis) {
189 skb = unmap_array[unmap_cons].skb;
190
191 unmap_array[unmap_cons].skb = NULL;
192
193 sent_packets++;
194 sent_bytes += skb->len;
195 wis -= BNA_TXQ_WI_NEEDED(1 + skb_shinfo(skb)->nr_frags);
196
197 pci_unmap_single(bnad->pcidev,
198 pci_unmap_addr(&unmap_array[unmap_cons],
199 dma_addr), skb_headlen(skb),
200 PCI_DMA_TODEVICE);
201 pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
202 BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
203
204 prefetch(&unmap_array[unmap_cons + 1]);
205 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
206 prefetch(&unmap_array[unmap_cons + 1]);
207
208 pci_unmap_page(bnad->pcidev,
209 pci_unmap_addr(&unmap_array[unmap_cons],
210 dma_addr),
211 skb_shinfo(skb)->frags[i].size,
212 PCI_DMA_TODEVICE);
213 pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
214 0);
215 BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
216 }
217 dev_kfree_skb_any(skb);
218 }
219
220 /* Update consumer pointers. */
221 tcb->consumer_index = updated_hw_cons;
222 unmap_q->consumer_index = unmap_cons;
223
224 tcb->txq->tx_packets += sent_packets;
225 tcb->txq->tx_bytes += sent_bytes;
226
227 return sent_packets;
228 }
229
230 /* Tx Free Tasklet function */
231 /* Frees for all the tcb's in all the Tx's */
232 /*
233 * Scheduled from sending context, so that
234 * the fat Tx lock is not held for too long
235 * in the sending context.
236 */
237 static void
238 bnad_tx_free_tasklet(unsigned long bnad_ptr)
239 {
240 struct bnad *bnad = (struct bnad *)bnad_ptr;
241 struct bna_tcb *tcb;
242 u32 acked;
243 int i, j;
244
245 for (i = 0; i < bnad->num_tx; i++) {
246 for (j = 0; j < bnad->num_txq_per_tx; j++) {
247 tcb = bnad->tx_info[i].tcb[j];
248 if (!tcb)
249 continue;
250 if (((u16) (*tcb->hw_consumer_index) !=
251 tcb->consumer_index) &&
252 (!test_and_set_bit(BNAD_TXQ_FREE_SENT,
253 &tcb->flags))) {
254 acked = bnad_free_txbufs(bnad, tcb);
255 bna_ib_ack(tcb->i_dbell, acked);
256 smp_mb__before_clear_bit();
257 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
258 }
259 }
260 }
261 }
262
263 static u32
264 bnad_tx(struct bnad *bnad, struct bna_tcb *tcb)
265 {
266 struct net_device *netdev = bnad->netdev;
267 u32 sent;
268
269 if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
270 return 0;
271
272 sent = bnad_free_txbufs(bnad, tcb);
273 if (sent) {
274 if (netif_queue_stopped(netdev) &&
275 netif_carrier_ok(netdev) &&
276 BNA_QE_FREE_CNT(tcb, tcb->q_depth) >=
277 BNAD_NETIF_WAKE_THRESHOLD) {
278 netif_wake_queue(netdev);
279 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
280 }
281 bna_ib_ack(tcb->i_dbell, sent);
282 } else
283 bna_ib_ack(tcb->i_dbell, 0);
284
285 smp_mb__before_clear_bit();
286 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
287
288 return sent;
289 }
290
291 /* MSIX Tx Completion Handler */
292 static irqreturn_t
293 bnad_msix_tx(int irq, void *data)
294 {
295 struct bna_tcb *tcb = (struct bna_tcb *)data;
296 struct bnad *bnad = tcb->bnad;
297
298 bnad_tx(bnad, tcb);
299
300 return IRQ_HANDLED;
301 }
302
303 static void
304 bnad_reset_rcb(struct bnad *bnad, struct bna_rcb *rcb)
305 {
306 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
307
308 rcb->producer_index = 0;
309 rcb->consumer_index = 0;
310
311 unmap_q->producer_index = 0;
312 unmap_q->consumer_index = 0;
313 }
314
315 static void
316 bnad_free_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
317 {
318 struct bnad_unmap_q *unmap_q;
319 struct sk_buff *skb;
320
321 unmap_q = rcb->unmap_q;
322 while (BNA_QE_IN_USE_CNT(unmap_q, unmap_q->q_depth)) {
323 skb = unmap_q->unmap_array[unmap_q->consumer_index].skb;
324 BUG_ON(!(skb));
325 unmap_q->unmap_array[unmap_q->consumer_index].skb = NULL;
326 pci_unmap_single(bnad->pcidev, pci_unmap_addr(&unmap_q->
327 unmap_array[unmap_q->consumer_index],
328 dma_addr), rcb->rxq->buffer_size +
329 NET_IP_ALIGN, PCI_DMA_FROMDEVICE);
330 dev_kfree_skb(skb);
331 BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth);
332 BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth);
333 }
334
335 bnad_reset_rcb(bnad, rcb);
336 }
337
338 static void
339 bnad_alloc_n_post_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
340 {
341 u16 to_alloc, alloced, unmap_prod, wi_range;
342 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
343 struct bnad_skb_unmap *unmap_array;
344 struct bna_rxq_entry *rxent;
345 struct sk_buff *skb;
346 dma_addr_t dma_addr;
347
348 alloced = 0;
349 to_alloc =
350 BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth);
351
352 unmap_array = unmap_q->unmap_array;
353 unmap_prod = unmap_q->producer_index;
354
355 BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent, wi_range);
356
357 while (to_alloc--) {
358 if (!wi_range) {
359 BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent,
360 wi_range);
361 }
362 skb = alloc_skb(rcb->rxq->buffer_size + NET_IP_ALIGN,
363 GFP_ATOMIC);
364 if (unlikely(!skb)) {
365 BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed);
366 goto finishing;
367 }
368 skb->dev = bnad->netdev;
369 skb_reserve(skb, NET_IP_ALIGN);
370 unmap_array[unmap_prod].skb = skb;
371 dma_addr = pci_map_single(bnad->pcidev, skb->data,
372 rcb->rxq->buffer_size, PCI_DMA_FROMDEVICE);
373 pci_unmap_addr_set(&unmap_array[unmap_prod], dma_addr,
374 dma_addr);
375 BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr);
376 BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
377
378 rxent++;
379 wi_range--;
380 alloced++;
381 }
382
383 finishing:
384 if (likely(alloced)) {
385 unmap_q->producer_index = unmap_prod;
386 rcb->producer_index = unmap_prod;
387 smp_mb();
388 bna_rxq_prod_indx_doorbell(rcb);
389 }
390 }
391
392 /*
393 * Locking is required in the enable path
394 * because it is called from a napi poll
395 * context, where the bna_lock is not held
396 * unlike the IRQ context.
397 */
398 static void
399 bnad_enable_txrx_irqs(struct bnad *bnad)
400 {
401 struct bna_tcb *tcb;
402 struct bna_ccb *ccb;
403 int i, j;
404 unsigned long flags;
405
406 spin_lock_irqsave(&bnad->bna_lock, flags);
407 for (i = 0; i < bnad->num_tx; i++) {
408 for (j = 0; j < bnad->num_txq_per_tx; j++) {
409 tcb = bnad->tx_info[i].tcb[j];
410 bna_ib_coalescing_timer_set(tcb->i_dbell,
411 tcb->txq->ib->ib_config.coalescing_timeo);
412 bna_ib_ack(tcb->i_dbell, 0);
413 }
414 }
415
416 for (i = 0; i < bnad->num_rx; i++) {
417 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
418 ccb = bnad->rx_info[i].rx_ctrl[j].ccb;
419 bnad_enable_rx_irq_unsafe(ccb);
420 }
421 }
422 spin_unlock_irqrestore(&bnad->bna_lock, flags);
423 }
424
425 static inline void
426 bnad_refill_rxq(struct bnad *bnad, struct bna_rcb *rcb)
427 {
428 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
429
430 if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
431 if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
432 >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
433 bnad_alloc_n_post_rxbufs(bnad, rcb);
434 smp_mb__before_clear_bit();
435 clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
436 }
437 }
438
439 static u32
440 bnad_poll_cq(struct bnad *bnad, struct bna_ccb *ccb, int budget)
441 {
442 struct bna_cq_entry *cmpl, *next_cmpl;
443 struct bna_rcb *rcb = NULL;
444 unsigned int wi_range, packets = 0, wis = 0;
445 struct bnad_unmap_q *unmap_q;
446 struct sk_buff *skb;
447 u32 flags;
448 u32 qid0 = ccb->rcb[0]->rxq->rxq_id;
449 struct bna_pkt_rate *pkt_rt = &ccb->pkt_rate;
450
451 prefetch(bnad->netdev);
452 BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt, cmpl,
453 wi_range);
454 BUG_ON(!(wi_range <= ccb->q_depth));
455 while (cmpl->valid && packets < budget) {
456 packets++;
457 BNA_UPDATE_PKT_CNT(pkt_rt, ntohs(cmpl->length));
458
459 if (qid0 == cmpl->rxq_id)
460 rcb = ccb->rcb[0];
461 else
462 rcb = ccb->rcb[1];
463
464 unmap_q = rcb->unmap_q;
465
466 skb = unmap_q->unmap_array[unmap_q->consumer_index].skb;
467 BUG_ON(!(skb));
468 unmap_q->unmap_array[unmap_q->consumer_index].skb = NULL;
469 pci_unmap_single(bnad->pcidev,
470 pci_unmap_addr(&unmap_q->
471 unmap_array[unmap_q->
472 consumer_index],
473 dma_addr),
474 rcb->rxq->buffer_size,
475 PCI_DMA_FROMDEVICE);
476 BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth);
477
478 /* Should be more efficient ? Performance ? */
479 BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth);
480
481 wis++;
482 if (likely(--wi_range))
483 next_cmpl = cmpl + 1;
484 else {
485 BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
486 wis = 0;
487 BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt,
488 next_cmpl, wi_range);
489 BUG_ON(!(wi_range <= ccb->q_depth));
490 }
491 prefetch(next_cmpl);
492
493 flags = ntohl(cmpl->flags);
494 if (unlikely
495 (flags &
496 (BNA_CQ_EF_MAC_ERROR | BNA_CQ_EF_FCS_ERROR |
497 BNA_CQ_EF_TOO_LONG))) {
498 dev_kfree_skb_any(skb);
499 rcb->rxq->rx_packets_with_error++;
500 goto next;
501 }
502
503 skb_put(skb, ntohs(cmpl->length));
504 if (likely
505 (bnad->rx_csum &&
506 (((flags & BNA_CQ_EF_IPV4) &&
507 (flags & BNA_CQ_EF_L3_CKSUM_OK)) ||
508 (flags & BNA_CQ_EF_IPV6)) &&
509 (flags & (BNA_CQ_EF_TCP | BNA_CQ_EF_UDP)) &&
510 (flags & BNA_CQ_EF_L4_CKSUM_OK)))
511 skb->ip_summed = CHECKSUM_UNNECESSARY;
512 else
513 skb_checksum_none_assert(skb);
514
515 rcb->rxq->rx_packets++;
516 rcb->rxq->rx_bytes += skb->len;
517 skb->protocol = eth_type_trans(skb, bnad->netdev);
518
519 if (bnad->vlan_grp && (flags & BNA_CQ_EF_VLAN)) {
520 struct bnad_rx_ctrl *rx_ctrl =
521 (struct bnad_rx_ctrl *)ccb->ctrl;
522 if (skb->ip_summed == CHECKSUM_UNNECESSARY)
523 vlan_gro_receive(&rx_ctrl->napi, bnad->vlan_grp,
524 ntohs(cmpl->vlan_tag), skb);
525 else
526 vlan_hwaccel_receive_skb(skb,
527 bnad->vlan_grp,
528 ntohs(cmpl->vlan_tag));
529
530 } else { /* Not VLAN tagged/stripped */
531 struct bnad_rx_ctrl *rx_ctrl =
532 (struct bnad_rx_ctrl *)ccb->ctrl;
533 if (skb->ip_summed == CHECKSUM_UNNECESSARY)
534 napi_gro_receive(&rx_ctrl->napi, skb);
535 else
536 netif_receive_skb(skb);
537 }
538
539 next:
540 cmpl->valid = 0;
541 cmpl = next_cmpl;
542 }
543
544 BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
545
546 if (likely(ccb)) {
547 bna_ib_ack(ccb->i_dbell, packets);
548 bnad_refill_rxq(bnad, ccb->rcb[0]);
549 if (ccb->rcb[1])
550 bnad_refill_rxq(bnad, ccb->rcb[1]);
551 } else
552 bna_ib_ack(ccb->i_dbell, 0);
553
554 return packets;
555 }
556
557 static void
558 bnad_disable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
559 {
560 bna_ib_coalescing_timer_set(ccb->i_dbell, 0);
561 bna_ib_ack(ccb->i_dbell, 0);
562 }
563
564 static void
565 bnad_enable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
566 {
567 unsigned long flags;
568
569 spin_lock_irqsave(&bnad->bna_lock, flags); /* Because of polling context */
570 bnad_enable_rx_irq_unsafe(ccb);
571 spin_unlock_irqrestore(&bnad->bna_lock, flags);
572 }
573
574 static void
575 bnad_netif_rx_schedule_poll(struct bnad *bnad, struct bna_ccb *ccb)
576 {
577 struct bnad_rx_ctrl *rx_ctrl = (struct bnad_rx_ctrl *)(ccb->ctrl);
578 if (likely(napi_schedule_prep((&rx_ctrl->napi)))) {
579 bnad_disable_rx_irq(bnad, ccb);
580 __napi_schedule((&rx_ctrl->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 net_device *netdev = data;
606 struct bnad *bnad;
607
608 bnad = netdev_priv(netdev);
609
610 /* BNA_ISR_GET(bnad); Inc Ref count */
611 spin_lock_irqsave(&bnad->bna_lock, flags);
612
613 bna_intr_status_get(&bnad->bna, intr_status);
614
615 if (BNA_IS_MBOX_ERR_INTR(intr_status))
616 bna_mbox_handler(&bnad->bna, intr_status);
617
618 spin_unlock_irqrestore(&bnad->bna_lock, flags);
619
620 /* BNAD_ISR_PUT(bnad); Dec Ref count */
621 return IRQ_HANDLED;
622 }
623
624 static irqreturn_t
625 bnad_isr(int irq, void *data)
626 {
627 int i, j;
628 u32 intr_status;
629 unsigned long flags;
630 struct net_device *netdev = data;
631 struct bnad *bnad = netdev_priv(netdev);
632 struct bnad_rx_info *rx_info;
633 struct bnad_rx_ctrl *rx_ctrl;
634
635 if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags)))
636 return IRQ_NONE;
637
638 bna_intr_status_get(&bnad->bna, intr_status);
639
640 if (unlikely(!intr_status))
641 return IRQ_NONE;
642
643 spin_lock_irqsave(&bnad->bna_lock, flags);
644
645 if (BNA_IS_MBOX_ERR_INTR(intr_status)) {
646 bna_mbox_handler(&bnad->bna, intr_status);
647 if (!BNA_IS_INTX_DATA_INTR(intr_status)) {
648 spin_unlock_irqrestore(&bnad->bna_lock, flags);
649 goto done;
650 }
651 }
652 spin_unlock_irqrestore(&bnad->bna_lock, flags);
653
654 /* Process data interrupts */
655 for (i = 0; i < bnad->num_rx; i++) {
656 rx_info = &bnad->rx_info[i];
657 if (!rx_info->rx)
658 continue;
659 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
660 rx_ctrl = &rx_info->rx_ctrl[j];
661 if (rx_ctrl->ccb)
662 bnad_netif_rx_schedule_poll(bnad,
663 rx_ctrl->ccb);
664 }
665 }
666 done:
667 return IRQ_HANDLED;
668 }
669
670 /*
671 * Called in interrupt / callback context
672 * with bna_lock held, so cfg_flags access is OK
673 */
674 static void
675 bnad_enable_mbox_irq(struct bnad *bnad)
676 {
677 int irq = BNAD_GET_MBOX_IRQ(bnad);
678
679 if (test_and_clear_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))
680 if (bnad->cfg_flags & BNAD_CF_MSIX)
681 enable_irq(irq);
682
683 BNAD_UPDATE_CTR(bnad, mbox_intr_enabled);
684 }
685
686 /*
687 * Called with bnad->bna_lock held b'cos of
688 * bnad->cfg_flags access.
689 */
690 static void
691 bnad_disable_mbox_irq(struct bnad *bnad)
692 {
693 int irq = BNAD_GET_MBOX_IRQ(bnad);
694
695
696 if (!test_and_set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))
697 if (bnad->cfg_flags & BNAD_CF_MSIX)
698 disable_irq_nosync(irq);
699
700 BNAD_UPDATE_CTR(bnad, mbox_intr_disabled);
701 }
702
703 /* Control Path Handlers */
704
705 /* Callbacks */
706 void
707 bnad_cb_device_enable_mbox_intr(struct bnad *bnad)
708 {
709 bnad_enable_mbox_irq(bnad);
710 }
711
712 void
713 bnad_cb_device_disable_mbox_intr(struct bnad *bnad)
714 {
715 bnad_disable_mbox_irq(bnad);
716 }
717
718 void
719 bnad_cb_device_enabled(struct bnad *bnad, enum bna_cb_status status)
720 {
721 complete(&bnad->bnad_completions.ioc_comp);
722 bnad->bnad_completions.ioc_comp_status = status;
723 }
724
725 void
726 bnad_cb_device_disabled(struct bnad *bnad, enum bna_cb_status status)
727 {
728 complete(&bnad->bnad_completions.ioc_comp);
729 bnad->bnad_completions.ioc_comp_status = status;
730 }
731
732 static void
733 bnad_cb_port_disabled(void *arg, enum bna_cb_status status)
734 {
735 struct bnad *bnad = (struct bnad *)arg;
736
737 complete(&bnad->bnad_completions.port_comp);
738
739 netif_carrier_off(bnad->netdev);
740 }
741
742 void
743 bnad_cb_port_link_status(struct bnad *bnad,
744 enum bna_link_status link_status)
745 {
746 bool link_up = 0;
747
748 link_up = (link_status == BNA_LINK_UP) || (link_status == BNA_CEE_UP);
749
750 if (link_status == BNA_CEE_UP) {
751 set_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
752 BNAD_UPDATE_CTR(bnad, cee_up);
753 } else
754 clear_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
755
756 if (link_up) {
757 if (!netif_carrier_ok(bnad->netdev)) {
758 pr_warn("bna: %s link up\n",
759 bnad->netdev->name);
760 netif_carrier_on(bnad->netdev);
761 BNAD_UPDATE_CTR(bnad, link_toggle);
762 if (test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags)) {
763 /* Force an immediate Transmit Schedule */
764 pr_info("bna: %s TX_STARTED\n",
765 bnad->netdev->name);
766 netif_wake_queue(bnad->netdev);
767 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
768 } else {
769 netif_stop_queue(bnad->netdev);
770 BNAD_UPDATE_CTR(bnad, netif_queue_stop);
771 }
772 }
773 } else {
774 if (netif_carrier_ok(bnad->netdev)) {
775 pr_warn("bna: %s link down\n",
776 bnad->netdev->name);
777 netif_carrier_off(bnad->netdev);
778 BNAD_UPDATE_CTR(bnad, link_toggle);
779 }
780 }
781 }
782
783 static void
784 bnad_cb_tx_disabled(void *arg, struct bna_tx *tx,
785 enum bna_cb_status status)
786 {
787 struct bnad *bnad = (struct bnad *)arg;
788
789 complete(&bnad->bnad_completions.tx_comp);
790 }
791
792 static void
793 bnad_cb_tcb_setup(struct bnad *bnad, struct bna_tcb *tcb)
794 {
795 struct bnad_tx_info *tx_info =
796 (struct bnad_tx_info *)tcb->txq->tx->priv;
797 struct bnad_unmap_q *unmap_q = tcb->unmap_q;
798
799 tx_info->tcb[tcb->id] = tcb;
800 unmap_q->producer_index = 0;
801 unmap_q->consumer_index = 0;
802 unmap_q->q_depth = BNAD_TX_UNMAPQ_DEPTH;
803 }
804
805 static void
806 bnad_cb_tcb_destroy(struct bnad *bnad, struct bna_tcb *tcb)
807 {
808 struct bnad_tx_info *tx_info =
809 (struct bnad_tx_info *)tcb->txq->tx->priv;
810
811 tx_info->tcb[tcb->id] = NULL;
812 }
813
814 static void
815 bnad_cb_rcb_setup(struct bnad *bnad, struct bna_rcb *rcb)
816 {
817 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
818
819 unmap_q->producer_index = 0;
820 unmap_q->consumer_index = 0;
821 unmap_q->q_depth = BNAD_RX_UNMAPQ_DEPTH;
822 }
823
824 static void
825 bnad_cb_ccb_setup(struct bnad *bnad, struct bna_ccb *ccb)
826 {
827 struct bnad_rx_info *rx_info =
828 (struct bnad_rx_info *)ccb->cq->rx->priv;
829
830 rx_info->rx_ctrl[ccb->id].ccb = ccb;
831 ccb->ctrl = &rx_info->rx_ctrl[ccb->id];
832 }
833
834 static void
835 bnad_cb_ccb_destroy(struct bnad *bnad, struct bna_ccb *ccb)
836 {
837 struct bnad_rx_info *rx_info =
838 (struct bnad_rx_info *)ccb->cq->rx->priv;
839
840 rx_info->rx_ctrl[ccb->id].ccb = NULL;
841 }
842
843 static void
844 bnad_cb_tx_stall(struct bnad *bnad, struct bna_tcb *tcb)
845 {
846 struct bnad_tx_info *tx_info =
847 (struct bnad_tx_info *)tcb->txq->tx->priv;
848
849 if (tx_info != &bnad->tx_info[0])
850 return;
851
852 clear_bit(BNAD_RF_TX_STARTED, &bnad->run_flags);
853 netif_stop_queue(bnad->netdev);
854 pr_info("bna: %s TX_STOPPED\n", bnad->netdev->name);
855 }
856
857 static void
858 bnad_cb_tx_resume(struct bnad *bnad, struct bna_tcb *tcb)
859 {
860 if (test_and_set_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))
861 return;
862
863 if (netif_carrier_ok(bnad->netdev)) {
864 pr_info("bna: %s TX_STARTED\n", bnad->netdev->name);
865 netif_wake_queue(bnad->netdev);
866 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
867 }
868 }
869
870 static void
871 bnad_cb_tx_cleanup(struct bnad *bnad, struct bna_tcb *tcb)
872 {
873 struct bnad_unmap_q *unmap_q;
874
875 if (!tcb || (!tcb->unmap_q))
876 return;
877
878 unmap_q = tcb->unmap_q;
879 if (!unmap_q->unmap_array)
880 return;
881
882 if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
883 return;
884
885 bnad_free_all_txbufs(bnad, tcb);
886
887 unmap_q->producer_index = 0;
888 unmap_q->consumer_index = 0;
889
890 smp_mb__before_clear_bit();
891 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
892 }
893
894 static void
895 bnad_cb_rx_cleanup(struct bnad *bnad,
896 struct bna_ccb *ccb)
897 {
898 bnad_cq_cmpl_init(bnad, ccb);
899
900 bnad_free_rxbufs(bnad, ccb->rcb[0]);
901 clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags);
902
903 if (ccb->rcb[1]) {
904 bnad_free_rxbufs(bnad, ccb->rcb[1]);
905 clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[1]->flags);
906 }
907 }
908
909 static void
910 bnad_cb_rx_post(struct bnad *bnad, struct bna_rcb *rcb)
911 {
912 struct bnad_unmap_q *unmap_q = rcb->unmap_q;
913
914 set_bit(BNAD_RXQ_STARTED, &rcb->flags);
915
916 /* Now allocate & post buffers for this RCB */
917 /* !!Allocation in callback context */
918 if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
919 if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
920 >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
921 bnad_alloc_n_post_rxbufs(bnad, rcb);
922 smp_mb__before_clear_bit();
923 clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
924 }
925 }
926
927 static void
928 bnad_cb_rx_disabled(void *arg, struct bna_rx *rx,
929 enum bna_cb_status status)
930 {
931 struct bnad *bnad = (struct bnad *)arg;
932
933 complete(&bnad->bnad_completions.rx_comp);
934 }
935
936 static void
937 bnad_cb_rx_mcast_add(struct bnad *bnad, struct bna_rx *rx,
938 enum bna_cb_status status)
939 {
940 bnad->bnad_completions.mcast_comp_status = status;
941 complete(&bnad->bnad_completions.mcast_comp);
942 }
943
944 void
945 bnad_cb_stats_get(struct bnad *bnad, enum bna_cb_status status,
946 struct bna_stats *stats)
947 {
948 if (status == BNA_CB_SUCCESS)
949 BNAD_UPDATE_CTR(bnad, hw_stats_updates);
950
951 if (!netif_running(bnad->netdev) ||
952 !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
953 return;
954
955 mod_timer(&bnad->stats_timer,
956 jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ));
957 }
958
959 /* Resource allocation, free functions */
960
961 static void
962 bnad_mem_free(struct bnad *bnad,
963 struct bna_mem_info *mem_info)
964 {
965 int i;
966 dma_addr_t dma_pa;
967
968 if (mem_info->mdl == NULL)
969 return;
970
971 for (i = 0; i < mem_info->num; i++) {
972 if (mem_info->mdl[i].kva != NULL) {
973 if (mem_info->mem_type == BNA_MEM_T_DMA) {
974 BNA_GET_DMA_ADDR(&(mem_info->mdl[i].dma),
975 dma_pa);
976 pci_free_consistent(bnad->pcidev,
977 mem_info->mdl[i].len,
978 mem_info->mdl[i].kva, dma_pa);
979 } else
980 kfree(mem_info->mdl[i].kva);
981 }
982 }
983 kfree(mem_info->mdl);
984 mem_info->mdl = NULL;
985 }
986
987 static int
988 bnad_mem_alloc(struct bnad *bnad,
989 struct bna_mem_info *mem_info)
990 {
991 int i;
992 dma_addr_t dma_pa;
993
994 if ((mem_info->num == 0) || (mem_info->len == 0)) {
995 mem_info->mdl = NULL;
996 return 0;
997 }
998
999 mem_info->mdl = kcalloc(mem_info->num, sizeof(struct bna_mem_descr),
1000 GFP_KERNEL);
1001 if (mem_info->mdl == NULL)
1002 return -ENOMEM;
1003
1004 if (mem_info->mem_type == BNA_MEM_T_DMA) {
1005 for (i = 0; i < mem_info->num; i++) {
1006 mem_info->mdl[i].len = mem_info->len;
1007 mem_info->mdl[i].kva =
1008 pci_alloc_consistent(bnad->pcidev,
1009 mem_info->len, &dma_pa);
1010
1011 if (mem_info->mdl[i].kva == NULL)
1012 goto err_return;
1013
1014 BNA_SET_DMA_ADDR(dma_pa,
1015 &(mem_info->mdl[i].dma));
1016 }
1017 } else {
1018 for (i = 0; i < mem_info->num; i++) {
1019 mem_info->mdl[i].len = mem_info->len;
1020 mem_info->mdl[i].kva = kzalloc(mem_info->len,
1021 GFP_KERNEL);
1022 if (mem_info->mdl[i].kva == NULL)
1023 goto err_return;
1024 }
1025 }
1026
1027 return 0;
1028
1029 err_return:
1030 bnad_mem_free(bnad, mem_info);
1031 return -ENOMEM;
1032 }
1033
1034 /* Free IRQ for Mailbox */
1035 static void
1036 bnad_mbox_irq_free(struct bnad *bnad,
1037 struct bna_intr_info *intr_info)
1038 {
1039 int irq;
1040 unsigned long flags;
1041
1042 if (intr_info->idl == NULL)
1043 return;
1044
1045 spin_lock_irqsave(&bnad->bna_lock, flags);
1046 bnad_disable_mbox_irq(bnad);
1047 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1048
1049 irq = BNAD_GET_MBOX_IRQ(bnad);
1050 free_irq(irq, bnad->netdev);
1051
1052 kfree(intr_info->idl);
1053 }
1054
1055 /*
1056 * Allocates IRQ for Mailbox, but keep it disabled
1057 * This will be enabled once we get the mbox enable callback
1058 * from bna
1059 */
1060 static int
1061 bnad_mbox_irq_alloc(struct bnad *bnad,
1062 struct bna_intr_info *intr_info)
1063 {
1064 int err;
1065 unsigned long flags;
1066 u32 irq;
1067 irq_handler_t irq_handler;
1068
1069 /* Mbox should use only 1 vector */
1070
1071 intr_info->idl = kzalloc(sizeof(*(intr_info->idl)), GFP_KERNEL);
1072 if (!intr_info->idl)
1073 return -ENOMEM;
1074
1075 spin_lock_irqsave(&bnad->bna_lock, flags);
1076 if (bnad->cfg_flags & BNAD_CF_MSIX) {
1077 irq_handler = (irq_handler_t)bnad_msix_mbox_handler;
1078 irq = bnad->msix_table[bnad->msix_num - 1].vector;
1079 flags = 0;
1080 intr_info->intr_type = BNA_INTR_T_MSIX;
1081 intr_info->idl[0].vector = bnad->msix_num - 1;
1082 } else {
1083 irq_handler = (irq_handler_t)bnad_isr;
1084 irq = bnad->pcidev->irq;
1085 flags = IRQF_SHARED;
1086 intr_info->intr_type = BNA_INTR_T_INTX;
1087 /* intr_info->idl.vector = 0 ? */
1088 }
1089 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1090
1091 sprintf(bnad->mbox_irq_name, "%s", BNAD_NAME);
1092
1093 /*
1094 * Set the Mbox IRQ disable flag, so that the IRQ handler
1095 * called from request_irq() for SHARED IRQs do not execute
1096 */
1097 set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags);
1098
1099 err = request_irq(irq, irq_handler, flags,
1100 bnad->mbox_irq_name, bnad->netdev);
1101
1102 if (err) {
1103 kfree(intr_info->idl);
1104 intr_info->idl = NULL;
1105 return err;
1106 }
1107
1108 spin_lock_irqsave(&bnad->bna_lock, flags);
1109
1110 if (bnad->cfg_flags & BNAD_CF_MSIX)
1111 disable_irq_nosync(irq);
1112
1113 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1114 return 0;
1115 }
1116
1117 static void
1118 bnad_txrx_irq_free(struct bnad *bnad, struct bna_intr_info *intr_info)
1119 {
1120 kfree(intr_info->idl);
1121 intr_info->idl = NULL;
1122 }
1123
1124 /* Allocates Interrupt Descriptor List for MSIX/INT-X vectors */
1125 static int
1126 bnad_txrx_irq_alloc(struct bnad *bnad, enum bnad_intr_source src,
1127 uint txrx_id, struct bna_intr_info *intr_info)
1128 {
1129 int i, vector_start = 0;
1130 u32 cfg_flags;
1131 unsigned long flags;
1132
1133 spin_lock_irqsave(&bnad->bna_lock, flags);
1134 cfg_flags = bnad->cfg_flags;
1135 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1136
1137 if (cfg_flags & BNAD_CF_MSIX) {
1138 intr_info->intr_type = BNA_INTR_T_MSIX;
1139 intr_info->idl = kcalloc(intr_info->num,
1140 sizeof(struct bna_intr_descr),
1141 GFP_KERNEL);
1142 if (!intr_info->idl)
1143 return -ENOMEM;
1144
1145 switch (src) {
1146 case BNAD_INTR_TX:
1147 vector_start = txrx_id;
1148 break;
1149
1150 case BNAD_INTR_RX:
1151 vector_start = bnad->num_tx * bnad->num_txq_per_tx +
1152 txrx_id;
1153 break;
1154
1155 default:
1156 BUG();
1157 }
1158
1159 for (i = 0; i < intr_info->num; i++)
1160 intr_info->idl[i].vector = vector_start + i;
1161 } else {
1162 intr_info->intr_type = BNA_INTR_T_INTX;
1163 intr_info->num = 1;
1164 intr_info->idl = kcalloc(intr_info->num,
1165 sizeof(struct bna_intr_descr),
1166 GFP_KERNEL);
1167 if (!intr_info->idl)
1168 return -ENOMEM;
1169
1170 switch (src) {
1171 case BNAD_INTR_TX:
1172 intr_info->idl[0].vector = 0x1; /* Bit mask : Tx IB */
1173 break;
1174
1175 case BNAD_INTR_RX:
1176 intr_info->idl[0].vector = 0x2; /* Bit mask : Rx IB */
1177 break;
1178 }
1179 }
1180 return 0;
1181 }
1182
1183 /**
1184 * NOTE: Should be called for MSIX only
1185 * Unregisters Tx MSIX vector(s) from the kernel
1186 */
1187 static void
1188 bnad_tx_msix_unregister(struct bnad *bnad, struct bnad_tx_info *tx_info,
1189 int num_txqs)
1190 {
1191 int i;
1192 int vector_num;
1193
1194 for (i = 0; i < num_txqs; i++) {
1195 if (tx_info->tcb[i] == NULL)
1196 continue;
1197
1198 vector_num = tx_info->tcb[i]->intr_vector;
1199 free_irq(bnad->msix_table[vector_num].vector, tx_info->tcb[i]);
1200 }
1201 }
1202
1203 /**
1204 * NOTE: Should be called for MSIX only
1205 * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel
1206 */
1207 static int
1208 bnad_tx_msix_register(struct bnad *bnad, struct bnad_tx_info *tx_info,
1209 uint tx_id, int num_txqs)
1210 {
1211 int i;
1212 int err;
1213 int vector_num;
1214
1215 for (i = 0; i < num_txqs; i++) {
1216 vector_num = tx_info->tcb[i]->intr_vector;
1217 sprintf(tx_info->tcb[i]->name, "%s TXQ %d", bnad->netdev->name,
1218 tx_id + tx_info->tcb[i]->id);
1219 err = request_irq(bnad->msix_table[vector_num].vector,
1220 (irq_handler_t)bnad_msix_tx, 0,
1221 tx_info->tcb[i]->name,
1222 tx_info->tcb[i]);
1223 if (err)
1224 goto err_return;
1225 }
1226
1227 return 0;
1228
1229 err_return:
1230 if (i > 0)
1231 bnad_tx_msix_unregister(bnad, tx_info, (i - 1));
1232 return -1;
1233 }
1234
1235 /**
1236 * NOTE: Should be called for MSIX only
1237 * Unregisters Rx MSIX vector(s) from the kernel
1238 */
1239 static void
1240 bnad_rx_msix_unregister(struct bnad *bnad, struct bnad_rx_info *rx_info,
1241 int num_rxps)
1242 {
1243 int i;
1244 int vector_num;
1245
1246 for (i = 0; i < num_rxps; i++) {
1247 if (rx_info->rx_ctrl[i].ccb == NULL)
1248 continue;
1249
1250 vector_num = rx_info->rx_ctrl[i].ccb->intr_vector;
1251 free_irq(bnad->msix_table[vector_num].vector,
1252 rx_info->rx_ctrl[i].ccb);
1253 }
1254 }
1255
1256 /**
1257 * NOTE: Should be called for MSIX only
1258 * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel
1259 */
1260 static int
1261 bnad_rx_msix_register(struct bnad *bnad, struct bnad_rx_info *rx_info,
1262 uint rx_id, int num_rxps)
1263 {
1264 int i;
1265 int err;
1266 int vector_num;
1267
1268 for (i = 0; i < num_rxps; i++) {
1269 vector_num = rx_info->rx_ctrl[i].ccb->intr_vector;
1270 sprintf(rx_info->rx_ctrl[i].ccb->name, "%s CQ %d",
1271 bnad->netdev->name,
1272 rx_id + rx_info->rx_ctrl[i].ccb->id);
1273 err = request_irq(bnad->msix_table[vector_num].vector,
1274 (irq_handler_t)bnad_msix_rx, 0,
1275 rx_info->rx_ctrl[i].ccb->name,
1276 rx_info->rx_ctrl[i].ccb);
1277 if (err)
1278 goto err_return;
1279 }
1280
1281 return 0;
1282
1283 err_return:
1284 if (i > 0)
1285 bnad_rx_msix_unregister(bnad, rx_info, (i - 1));
1286 return -1;
1287 }
1288
1289 /* Free Tx object Resources */
1290 static void
1291 bnad_tx_res_free(struct bnad *bnad, struct bna_res_info *res_info)
1292 {
1293 int i;
1294
1295 for (i = 0; i < BNA_TX_RES_T_MAX; i++) {
1296 if (res_info[i].res_type == BNA_RES_T_MEM)
1297 bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
1298 else if (res_info[i].res_type == BNA_RES_T_INTR)
1299 bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info);
1300 }
1301 }
1302
1303 /* Allocates memory and interrupt resources for Tx object */
1304 static int
1305 bnad_tx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info,
1306 uint tx_id)
1307 {
1308 int i, err = 0;
1309
1310 for (i = 0; i < BNA_TX_RES_T_MAX; i++) {
1311 if (res_info[i].res_type == BNA_RES_T_MEM)
1312 err = bnad_mem_alloc(bnad,
1313 &res_info[i].res_u.mem_info);
1314 else if (res_info[i].res_type == BNA_RES_T_INTR)
1315 err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_TX, tx_id,
1316 &res_info[i].res_u.intr_info);
1317 if (err)
1318 goto err_return;
1319 }
1320 return 0;
1321
1322 err_return:
1323 bnad_tx_res_free(bnad, res_info);
1324 return err;
1325 }
1326
1327 /* Free Rx object Resources */
1328 static void
1329 bnad_rx_res_free(struct bnad *bnad, struct bna_res_info *res_info)
1330 {
1331 int i;
1332
1333 for (i = 0; i < BNA_RX_RES_T_MAX; i++) {
1334 if (res_info[i].res_type == BNA_RES_T_MEM)
1335 bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
1336 else if (res_info[i].res_type == BNA_RES_T_INTR)
1337 bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info);
1338 }
1339 }
1340
1341 /* Allocates memory and interrupt resources for Rx object */
1342 static int
1343 bnad_rx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info,
1344 uint rx_id)
1345 {
1346 int i, err = 0;
1347
1348 /* All memory needs to be allocated before setup_ccbs */
1349 for (i = 0; i < BNA_RX_RES_T_MAX; i++) {
1350 if (res_info[i].res_type == BNA_RES_T_MEM)
1351 err = bnad_mem_alloc(bnad,
1352 &res_info[i].res_u.mem_info);
1353 else if (res_info[i].res_type == BNA_RES_T_INTR)
1354 err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_RX, rx_id,
1355 &res_info[i].res_u.intr_info);
1356 if (err)
1357 goto err_return;
1358 }
1359 return 0;
1360
1361 err_return:
1362 bnad_rx_res_free(bnad, res_info);
1363 return err;
1364 }
1365
1366 /* Timer callbacks */
1367 /* a) IOC timer */
1368 static void
1369 bnad_ioc_timeout(unsigned long data)
1370 {
1371 struct bnad *bnad = (struct bnad *)data;
1372 unsigned long flags;
1373
1374 spin_lock_irqsave(&bnad->bna_lock, flags);
1375 bfa_nw_ioc_timeout((void *) &bnad->bna.device.ioc);
1376 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1377 }
1378
1379 static void
1380 bnad_ioc_hb_check(unsigned long data)
1381 {
1382 struct bnad *bnad = (struct bnad *)data;
1383 unsigned long flags;
1384
1385 spin_lock_irqsave(&bnad->bna_lock, flags);
1386 bfa_nw_ioc_hb_check((void *) &bnad->bna.device.ioc);
1387 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1388 }
1389
1390 static void
1391 bnad_ioc_sem_timeout(unsigned long data)
1392 {
1393 struct bnad *bnad = (struct bnad *)data;
1394 unsigned long flags;
1395
1396 spin_lock_irqsave(&bnad->bna_lock, flags);
1397 bfa_nw_ioc_sem_timeout((void *) &bnad->bna.device.ioc);
1398 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1399 }
1400
1401 /*
1402 * All timer routines use bnad->bna_lock to protect against
1403 * the following race, which may occur in case of no locking:
1404 * Time CPU m CPU n
1405 * 0 1 = test_bit
1406 * 1 clear_bit
1407 * 2 del_timer_sync
1408 * 3 mod_timer
1409 */
1410
1411 /* b) Dynamic Interrupt Moderation Timer */
1412 static void
1413 bnad_dim_timeout(unsigned long data)
1414 {
1415 struct bnad *bnad = (struct bnad *)data;
1416 struct bnad_rx_info *rx_info;
1417 struct bnad_rx_ctrl *rx_ctrl;
1418 int i, j;
1419 unsigned long flags;
1420
1421 if (!netif_carrier_ok(bnad->netdev))
1422 return;
1423
1424 spin_lock_irqsave(&bnad->bna_lock, flags);
1425 for (i = 0; i < bnad->num_rx; i++) {
1426 rx_info = &bnad->rx_info[i];
1427 if (!rx_info->rx)
1428 continue;
1429 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
1430 rx_ctrl = &rx_info->rx_ctrl[j];
1431 if (!rx_ctrl->ccb)
1432 continue;
1433 bna_rx_dim_update(rx_ctrl->ccb);
1434 }
1435 }
1436
1437 /* Check for BNAD_CF_DIM_ENABLED, does not eleminate a race */
1438 if (test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags))
1439 mod_timer(&bnad->dim_timer,
1440 jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ));
1441 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1442 }
1443
1444 /* c) Statistics Timer */
1445 static void
1446 bnad_stats_timeout(unsigned long data)
1447 {
1448 struct bnad *bnad = (struct bnad *)data;
1449 unsigned long flags;
1450
1451 if (!netif_running(bnad->netdev) ||
1452 !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
1453 return;
1454
1455 spin_lock_irqsave(&bnad->bna_lock, flags);
1456 bna_stats_get(&bnad->bna);
1457 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1458 }
1459
1460 /*
1461 * Set up timer for DIM
1462 * Called with bnad->bna_lock held
1463 */
1464 void
1465 bnad_dim_timer_start(struct bnad *bnad)
1466 {
1467 if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED &&
1468 !test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) {
1469 setup_timer(&bnad->dim_timer, bnad_dim_timeout,
1470 (unsigned long)bnad);
1471 set_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags);
1472 mod_timer(&bnad->dim_timer,
1473 jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ));
1474 }
1475 }
1476
1477 /*
1478 * Set up timer for statistics
1479 * Called with mutex_lock(&bnad->conf_mutex) held
1480 */
1481 static void
1482 bnad_stats_timer_start(struct bnad *bnad)
1483 {
1484 unsigned long flags;
1485
1486 spin_lock_irqsave(&bnad->bna_lock, flags);
1487 if (!test_and_set_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) {
1488 setup_timer(&bnad->stats_timer, bnad_stats_timeout,
1489 (unsigned long)bnad);
1490 mod_timer(&bnad->stats_timer,
1491 jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ));
1492 }
1493 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1494 }
1495
1496 /*
1497 * Stops the stats timer
1498 * Called with mutex_lock(&bnad->conf_mutex) held
1499 */
1500 static void
1501 bnad_stats_timer_stop(struct bnad *bnad)
1502 {
1503 int to_del = 0;
1504 unsigned long flags;
1505
1506 spin_lock_irqsave(&bnad->bna_lock, flags);
1507 if (test_and_clear_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
1508 to_del = 1;
1509 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1510 if (to_del)
1511 del_timer_sync(&bnad->stats_timer);
1512 }
1513
1514 /* Utilities */
1515
1516 static void
1517 bnad_netdev_mc_list_get(struct net_device *netdev, u8 *mc_list)
1518 {
1519 int i = 1; /* Index 0 has broadcast address */
1520 struct netdev_hw_addr *mc_addr;
1521
1522 netdev_for_each_mc_addr(mc_addr, netdev) {
1523 memcpy(&mc_list[i * ETH_ALEN], &mc_addr->addr[0],
1524 ETH_ALEN);
1525 i++;
1526 }
1527 }
1528
1529 static int
1530 bnad_napi_poll_rx(struct napi_struct *napi, int budget)
1531 {
1532 struct bnad_rx_ctrl *rx_ctrl =
1533 container_of(napi, struct bnad_rx_ctrl, napi);
1534 struct bna_ccb *ccb;
1535 struct bnad *bnad;
1536 int rcvd = 0;
1537
1538 ccb = rx_ctrl->ccb;
1539
1540 bnad = ccb->bnad;
1541
1542 if (!netif_carrier_ok(bnad->netdev))
1543 goto poll_exit;
1544
1545 rcvd = bnad_poll_cq(bnad, ccb, budget);
1546 if (rcvd == budget)
1547 return rcvd;
1548
1549 poll_exit:
1550 napi_complete((napi));
1551
1552 BNAD_UPDATE_CTR(bnad, netif_rx_complete);
1553
1554 bnad_enable_rx_irq(bnad, ccb);
1555 return rcvd;
1556 }
1557
1558 static int
1559 bnad_napi_poll_txrx(struct napi_struct *napi, int budget)
1560 {
1561 struct bnad_rx_ctrl *rx_ctrl =
1562 container_of(napi, struct bnad_rx_ctrl, napi);
1563 struct bna_ccb *ccb;
1564 struct bnad *bnad;
1565 int rcvd = 0;
1566 int i, j;
1567
1568 ccb = rx_ctrl->ccb;
1569
1570 bnad = ccb->bnad;
1571
1572 if (!netif_carrier_ok(bnad->netdev))
1573 goto poll_exit;
1574
1575 /* Handle Tx Completions, if any */
1576 for (i = 0; i < bnad->num_tx; i++) {
1577 for (j = 0; j < bnad->num_txq_per_tx; j++)
1578 bnad_tx(bnad, bnad->tx_info[i].tcb[j]);
1579 }
1580
1581 /* Handle Rx Completions */
1582 rcvd = bnad_poll_cq(bnad, ccb, budget);
1583 if (rcvd == budget)
1584 return rcvd;
1585 poll_exit:
1586 napi_complete((napi));
1587
1588 BNAD_UPDATE_CTR(bnad, netif_rx_complete);
1589
1590 bnad_enable_txrx_irqs(bnad);
1591 return rcvd;
1592 }
1593
1594 static void
1595 bnad_napi_enable(struct bnad *bnad, u32 rx_id)
1596 {
1597 int (*napi_poll) (struct napi_struct *, int);
1598 struct bnad_rx_ctrl *rx_ctrl;
1599 int i;
1600 unsigned long flags;
1601
1602 spin_lock_irqsave(&bnad->bna_lock, flags);
1603 if (bnad->cfg_flags & BNAD_CF_MSIX)
1604 napi_poll = bnad_napi_poll_rx;
1605 else
1606 napi_poll = bnad_napi_poll_txrx;
1607 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1608
1609 /* Initialize & enable NAPI */
1610 for (i = 0; i < bnad->num_rxp_per_rx; i++) {
1611 rx_ctrl = &bnad->rx_info[rx_id].rx_ctrl[i];
1612 netif_napi_add(bnad->netdev, &rx_ctrl->napi,
1613 napi_poll, 64);
1614 napi_enable(&rx_ctrl->napi);
1615 }
1616 }
1617
1618 static void
1619 bnad_napi_disable(struct bnad *bnad, u32 rx_id)
1620 {
1621 int i;
1622
1623 /* First disable and then clean up */
1624 for (i = 0; i < bnad->num_rxp_per_rx; i++) {
1625 napi_disable(&bnad->rx_info[rx_id].rx_ctrl[i].napi);
1626 netif_napi_del(&bnad->rx_info[rx_id].rx_ctrl[i].napi);
1627 }
1628 }
1629
1630 /* Should be held with conf_lock held */
1631 void
1632 bnad_cleanup_tx(struct bnad *bnad, uint tx_id)
1633 {
1634 struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id];
1635 struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0];
1636 unsigned long flags;
1637
1638 if (!tx_info->tx)
1639 return;
1640
1641 init_completion(&bnad->bnad_completions.tx_comp);
1642 spin_lock_irqsave(&bnad->bna_lock, flags);
1643 bna_tx_disable(tx_info->tx, BNA_HARD_CLEANUP, bnad_cb_tx_disabled);
1644 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1645 wait_for_completion(&bnad->bnad_completions.tx_comp);
1646
1647 if (tx_info->tcb[0]->intr_type == BNA_INTR_T_MSIX)
1648 bnad_tx_msix_unregister(bnad, tx_info,
1649 bnad->num_txq_per_tx);
1650
1651 spin_lock_irqsave(&bnad->bna_lock, flags);
1652 bna_tx_destroy(tx_info->tx);
1653 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1654
1655 tx_info->tx = NULL;
1656
1657 if (0 == tx_id)
1658 tasklet_kill(&bnad->tx_free_tasklet);
1659
1660 bnad_tx_res_free(bnad, res_info);
1661 }
1662
1663 /* Should be held with conf_lock held */
1664 int
1665 bnad_setup_tx(struct bnad *bnad, uint tx_id)
1666 {
1667 int err;
1668 struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id];
1669 struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0];
1670 struct bna_intr_info *intr_info =
1671 &res_info[BNA_TX_RES_INTR_T_TXCMPL].res_u.intr_info;
1672 struct bna_tx_config *tx_config = &bnad->tx_config[tx_id];
1673 struct bna_tx_event_cbfn tx_cbfn;
1674 struct bna_tx *tx;
1675 unsigned long flags;
1676
1677 /* Initialize the Tx object configuration */
1678 tx_config->num_txq = bnad->num_txq_per_tx;
1679 tx_config->txq_depth = bnad->txq_depth;
1680 tx_config->tx_type = BNA_TX_T_REGULAR;
1681
1682 /* Initialize the tx event handlers */
1683 tx_cbfn.tcb_setup_cbfn = bnad_cb_tcb_setup;
1684 tx_cbfn.tcb_destroy_cbfn = bnad_cb_tcb_destroy;
1685 tx_cbfn.tx_stall_cbfn = bnad_cb_tx_stall;
1686 tx_cbfn.tx_resume_cbfn = bnad_cb_tx_resume;
1687 tx_cbfn.tx_cleanup_cbfn = bnad_cb_tx_cleanup;
1688
1689 /* Get BNA's resource requirement for one tx object */
1690 spin_lock_irqsave(&bnad->bna_lock, flags);
1691 bna_tx_res_req(bnad->num_txq_per_tx,
1692 bnad->txq_depth, res_info);
1693 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1694
1695 /* Fill Unmap Q memory requirements */
1696 BNAD_FILL_UNMAPQ_MEM_REQ(
1697 &res_info[BNA_TX_RES_MEM_T_UNMAPQ],
1698 bnad->num_txq_per_tx,
1699 BNAD_TX_UNMAPQ_DEPTH);
1700
1701 /* Allocate resources */
1702 err = bnad_tx_res_alloc(bnad, res_info, tx_id);
1703 if (err)
1704 return err;
1705
1706 /* Ask BNA to create one Tx object, supplying required resources */
1707 spin_lock_irqsave(&bnad->bna_lock, flags);
1708 tx = bna_tx_create(&bnad->bna, bnad, tx_config, &tx_cbfn, res_info,
1709 tx_info);
1710 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1711 if (!tx)
1712 goto err_return;
1713 tx_info->tx = tx;
1714
1715 /* Register ISR for the Tx object */
1716 if (intr_info->intr_type == BNA_INTR_T_MSIX) {
1717 err = bnad_tx_msix_register(bnad, tx_info,
1718 tx_id, bnad->num_txq_per_tx);
1719 if (err)
1720 goto err_return;
1721 }
1722
1723 spin_lock_irqsave(&bnad->bna_lock, flags);
1724 bna_tx_enable(tx);
1725 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1726
1727 return 0;
1728
1729 err_return:
1730 bnad_tx_res_free(bnad, res_info);
1731 return err;
1732 }
1733
1734 /* Setup the rx config for bna_rx_create */
1735 /* bnad decides the configuration */
1736 static void
1737 bnad_init_rx_config(struct bnad *bnad, struct bna_rx_config *rx_config)
1738 {
1739 rx_config->rx_type = BNA_RX_T_REGULAR;
1740 rx_config->num_paths = bnad->num_rxp_per_rx;
1741
1742 if (bnad->num_rxp_per_rx > 1) {
1743 rx_config->rss_status = BNA_STATUS_T_ENABLED;
1744 rx_config->rss_config.hash_type =
1745 (BFI_RSS_T_V4_TCP |
1746 BFI_RSS_T_V6_TCP |
1747 BFI_RSS_T_V4_IP |
1748 BFI_RSS_T_V6_IP);
1749 rx_config->rss_config.hash_mask =
1750 bnad->num_rxp_per_rx - 1;
1751 get_random_bytes(rx_config->rss_config.toeplitz_hash_key,
1752 sizeof(rx_config->rss_config.toeplitz_hash_key));
1753 } else {
1754 rx_config->rss_status = BNA_STATUS_T_DISABLED;
1755 memset(&rx_config->rss_config, 0,
1756 sizeof(rx_config->rss_config));
1757 }
1758 rx_config->rxp_type = BNA_RXP_SLR;
1759 rx_config->q_depth = bnad->rxq_depth;
1760
1761 rx_config->small_buff_size = BFI_SMALL_RXBUF_SIZE;
1762
1763 rx_config->vlan_strip_status = BNA_STATUS_T_ENABLED;
1764 }
1765
1766 /* Called with mutex_lock(&bnad->conf_mutex) held */
1767 void
1768 bnad_cleanup_rx(struct bnad *bnad, uint rx_id)
1769 {
1770 struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id];
1771 struct bna_rx_config *rx_config = &bnad->rx_config[rx_id];
1772 struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0];
1773 unsigned long flags;
1774 int dim_timer_del = 0;
1775
1776 if (!rx_info->rx)
1777 return;
1778
1779 if (0 == rx_id) {
1780 spin_lock_irqsave(&bnad->bna_lock, flags);
1781 dim_timer_del = bnad_dim_timer_running(bnad);
1782 if (dim_timer_del)
1783 clear_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags);
1784 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1785 if (dim_timer_del)
1786 del_timer_sync(&bnad->dim_timer);
1787 }
1788
1789 bnad_napi_disable(bnad, rx_id);
1790
1791 init_completion(&bnad->bnad_completions.rx_comp);
1792 spin_lock_irqsave(&bnad->bna_lock, flags);
1793 bna_rx_disable(rx_info->rx, BNA_HARD_CLEANUP, bnad_cb_rx_disabled);
1794 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1795 wait_for_completion(&bnad->bnad_completions.rx_comp);
1796
1797 if (rx_info->rx_ctrl[0].ccb->intr_type == BNA_INTR_T_MSIX)
1798 bnad_rx_msix_unregister(bnad, rx_info, rx_config->num_paths);
1799
1800 spin_lock_irqsave(&bnad->bna_lock, flags);
1801 bna_rx_destroy(rx_info->rx);
1802 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1803
1804 rx_info->rx = NULL;
1805
1806 bnad_rx_res_free(bnad, res_info);
1807 }
1808
1809 /* Called with mutex_lock(&bnad->conf_mutex) held */
1810 int
1811 bnad_setup_rx(struct bnad *bnad, uint rx_id)
1812 {
1813 int err;
1814 struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id];
1815 struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0];
1816 struct bna_intr_info *intr_info =
1817 &res_info[BNA_RX_RES_T_INTR].res_u.intr_info;
1818 struct bna_rx_config *rx_config = &bnad->rx_config[rx_id];
1819 struct bna_rx_event_cbfn rx_cbfn;
1820 struct bna_rx *rx;
1821 unsigned long flags;
1822
1823 /* Initialize the Rx object configuration */
1824 bnad_init_rx_config(bnad, rx_config);
1825
1826 /* Initialize the Rx event handlers */
1827 rx_cbfn.rcb_setup_cbfn = bnad_cb_rcb_setup;
1828 rx_cbfn.rcb_destroy_cbfn = NULL;
1829 rx_cbfn.ccb_setup_cbfn = bnad_cb_ccb_setup;
1830 rx_cbfn.ccb_destroy_cbfn = bnad_cb_ccb_destroy;
1831 rx_cbfn.rx_cleanup_cbfn = bnad_cb_rx_cleanup;
1832 rx_cbfn.rx_post_cbfn = bnad_cb_rx_post;
1833
1834 /* Get BNA's resource requirement for one Rx object */
1835 spin_lock_irqsave(&bnad->bna_lock, flags);
1836 bna_rx_res_req(rx_config, res_info);
1837 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1838
1839 /* Fill Unmap Q memory requirements */
1840 BNAD_FILL_UNMAPQ_MEM_REQ(
1841 &res_info[BNA_RX_RES_MEM_T_UNMAPQ],
1842 rx_config->num_paths +
1843 ((rx_config->rxp_type == BNA_RXP_SINGLE) ? 0 :
1844 rx_config->num_paths), BNAD_RX_UNMAPQ_DEPTH);
1845
1846 /* Allocate resource */
1847 err = bnad_rx_res_alloc(bnad, res_info, rx_id);
1848 if (err)
1849 return err;
1850
1851 /* Ask BNA to create one Rx object, supplying required resources */
1852 spin_lock_irqsave(&bnad->bna_lock, flags);
1853 rx = bna_rx_create(&bnad->bna, bnad, rx_config, &rx_cbfn, res_info,
1854 rx_info);
1855 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1856 if (!rx)
1857 goto err_return;
1858 rx_info->rx = rx;
1859
1860 /* Register ISR for the Rx object */
1861 if (intr_info->intr_type == BNA_INTR_T_MSIX) {
1862 err = bnad_rx_msix_register(bnad, rx_info, rx_id,
1863 rx_config->num_paths);
1864 if (err)
1865 goto err_return;
1866 }
1867
1868 /* Enable NAPI */
1869 bnad_napi_enable(bnad, rx_id);
1870
1871 spin_lock_irqsave(&bnad->bna_lock, flags);
1872 if (0 == rx_id) {
1873 /* Set up Dynamic Interrupt Moderation Vector */
1874 if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED)
1875 bna_rx_dim_reconfig(&bnad->bna, bna_napi_dim_vector);
1876
1877 /* Enable VLAN filtering only on the default Rx */
1878 bna_rx_vlanfilter_enable(rx);
1879
1880 /* Start the DIM timer */
1881 bnad_dim_timer_start(bnad);
1882 }
1883
1884 bna_rx_enable(rx);
1885 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1886
1887 return 0;
1888
1889 err_return:
1890 bnad_cleanup_rx(bnad, rx_id);
1891 return err;
1892 }
1893
1894 /* Called with conf_lock & bnad->bna_lock held */
1895 void
1896 bnad_tx_coalescing_timeo_set(struct bnad *bnad)
1897 {
1898 struct bnad_tx_info *tx_info;
1899
1900 tx_info = &bnad->tx_info[0];
1901 if (!tx_info->tx)
1902 return;
1903
1904 bna_tx_coalescing_timeo_set(tx_info->tx, bnad->tx_coalescing_timeo);
1905 }
1906
1907 /* Called with conf_lock & bnad->bna_lock held */
1908 void
1909 bnad_rx_coalescing_timeo_set(struct bnad *bnad)
1910 {
1911 struct bnad_rx_info *rx_info;
1912 int i;
1913
1914 for (i = 0; i < bnad->num_rx; i++) {
1915 rx_info = &bnad->rx_info[i];
1916 if (!rx_info->rx)
1917 continue;
1918 bna_rx_coalescing_timeo_set(rx_info->rx,
1919 bnad->rx_coalescing_timeo);
1920 }
1921 }
1922
1923 /*
1924 * Called with bnad->bna_lock held
1925 */
1926 static int
1927 bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr)
1928 {
1929 int ret;
1930
1931 if (!is_valid_ether_addr(mac_addr))
1932 return -EADDRNOTAVAIL;
1933
1934 /* If datapath is down, pretend everything went through */
1935 if (!bnad->rx_info[0].rx)
1936 return 0;
1937
1938 ret = bna_rx_ucast_set(bnad->rx_info[0].rx, mac_addr, NULL);
1939 if (ret != BNA_CB_SUCCESS)
1940 return -EADDRNOTAVAIL;
1941
1942 return 0;
1943 }
1944
1945 /* Should be called with conf_lock held */
1946 static int
1947 bnad_enable_default_bcast(struct bnad *bnad)
1948 {
1949 struct bnad_rx_info *rx_info = &bnad->rx_info[0];
1950 int ret;
1951 unsigned long flags;
1952
1953 init_completion(&bnad->bnad_completions.mcast_comp);
1954
1955 spin_lock_irqsave(&bnad->bna_lock, flags);
1956 ret = bna_rx_mcast_add(rx_info->rx, (u8 *)bnad_bcast_addr,
1957 bnad_cb_rx_mcast_add);
1958 spin_unlock_irqrestore(&bnad->bna_lock, flags);
1959
1960 if (ret == BNA_CB_SUCCESS)
1961 wait_for_completion(&bnad->bnad_completions.mcast_comp);
1962 else
1963 return -ENODEV;
1964
1965 if (bnad->bnad_completions.mcast_comp_status != BNA_CB_SUCCESS)
1966 return -ENODEV;
1967
1968 return 0;
1969 }
1970
1971 /* Statistics utilities */
1972 void
1973 bnad_netdev_qstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats)
1974 {
1975 int i, j;
1976
1977 for (i = 0; i < bnad->num_rx; i++) {
1978 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
1979 if (bnad->rx_info[i].rx_ctrl[j].ccb) {
1980 stats->rx_packets += bnad->rx_info[i].
1981 rx_ctrl[j].ccb->rcb[0]->rxq->rx_packets;
1982 stats->rx_bytes += bnad->rx_info[i].
1983 rx_ctrl[j].ccb->rcb[0]->rxq->rx_bytes;
1984 if (bnad->rx_info[i].rx_ctrl[j].ccb->rcb[1] &&
1985 bnad->rx_info[i].rx_ctrl[j].ccb->
1986 rcb[1]->rxq) {
1987 stats->rx_packets +=
1988 bnad->rx_info[i].rx_ctrl[j].
1989 ccb->rcb[1]->rxq->rx_packets;
1990 stats->rx_bytes +=
1991 bnad->rx_info[i].rx_ctrl[j].
1992 ccb->rcb[1]->rxq->rx_bytes;
1993 }
1994 }
1995 }
1996 }
1997 for (i = 0; i < bnad->num_tx; i++) {
1998 for (j = 0; j < bnad->num_txq_per_tx; j++) {
1999 if (bnad->tx_info[i].tcb[j]) {
2000 stats->tx_packets +=
2001 bnad->tx_info[i].tcb[j]->txq->tx_packets;
2002 stats->tx_bytes +=
2003 bnad->tx_info[i].tcb[j]->txq->tx_bytes;
2004 }
2005 }
2006 }
2007 }
2008
2009 /*
2010 * Must be called with the bna_lock held.
2011 */
2012 void
2013 bnad_netdev_hwstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats)
2014 {
2015 struct bfi_ll_stats_mac *mac_stats;
2016 u64 bmap;
2017 int i;
2018
2019 mac_stats = &bnad->stats.bna_stats->hw_stats->mac_stats;
2020 stats->rx_errors =
2021 mac_stats->rx_fcs_error + mac_stats->rx_alignment_error +
2022 mac_stats->rx_frame_length_error + mac_stats->rx_code_error +
2023 mac_stats->rx_undersize;
2024 stats->tx_errors = mac_stats->tx_fcs_error +
2025 mac_stats->tx_undersize;
2026 stats->rx_dropped = mac_stats->rx_drop;
2027 stats->tx_dropped = mac_stats->tx_drop;
2028 stats->multicast = mac_stats->rx_multicast;
2029 stats->collisions = mac_stats->tx_total_collision;
2030
2031 stats->rx_length_errors = mac_stats->rx_frame_length_error;
2032
2033 /* receive ring buffer overflow ?? */
2034
2035 stats->rx_crc_errors = mac_stats->rx_fcs_error;
2036 stats->rx_frame_errors = mac_stats->rx_alignment_error;
2037 /* recv'r fifo overrun */
2038 bmap = (u64)bnad->stats.bna_stats->rxf_bmap[0] |
2039 ((u64)bnad->stats.bna_stats->rxf_bmap[1] << 32);
2040 for (i = 0; bmap && (i < BFI_LL_RXF_ID_MAX); i++) {
2041 if (bmap & 1) {
2042 stats->rx_fifo_errors +=
2043 bnad->stats.bna_stats->
2044 hw_stats->rxf_stats[i].frame_drops;
2045 break;
2046 }
2047 bmap >>= 1;
2048 }
2049 }
2050
2051 static void
2052 bnad_mbox_irq_sync(struct bnad *bnad)
2053 {
2054 u32 irq;
2055 unsigned long flags;
2056
2057 spin_lock_irqsave(&bnad->bna_lock, flags);
2058 if (bnad->cfg_flags & BNAD_CF_MSIX)
2059 irq = bnad->msix_table[bnad->msix_num - 1].vector;
2060 else
2061 irq = bnad->pcidev->irq;
2062 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2063
2064 synchronize_irq(irq);
2065 }
2066
2067 /* Utility used by bnad_start_xmit, for doing TSO */
2068 static int
2069 bnad_tso_prepare(struct bnad *bnad, struct sk_buff *skb)
2070 {
2071 int err;
2072
2073 /* SKB_GSO_TCPV4 and SKB_GSO_TCPV6 is defined since 2.6.18. */
2074 BUG_ON(!(skb_shinfo(skb)->gso_type == SKB_GSO_TCPV4 ||
2075 skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6));
2076 if (skb_header_cloned(skb)) {
2077 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2078 if (err) {
2079 BNAD_UPDATE_CTR(bnad, tso_err);
2080 return err;
2081 }
2082 }
2083
2084 /*
2085 * For TSO, the TCP checksum field is seeded with pseudo-header sum
2086 * excluding the length field.
2087 */
2088 if (skb->protocol == htons(ETH_P_IP)) {
2089 struct iphdr *iph = ip_hdr(skb);
2090
2091 /* Do we really need these? */
2092 iph->tot_len = 0;
2093 iph->check = 0;
2094
2095 tcp_hdr(skb)->check =
2096 ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
2097 IPPROTO_TCP, 0);
2098 BNAD_UPDATE_CTR(bnad, tso4);
2099 } else {
2100 struct ipv6hdr *ipv6h = ipv6_hdr(skb);
2101
2102 BUG_ON(!(skb->protocol == htons(ETH_P_IPV6)));
2103 ipv6h->payload_len = 0;
2104 tcp_hdr(skb)->check =
2105 ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, 0,
2106 IPPROTO_TCP, 0);
2107 BNAD_UPDATE_CTR(bnad, tso6);
2108 }
2109
2110 return 0;
2111 }
2112
2113 /*
2114 * Initialize Q numbers depending on Rx Paths
2115 * Called with bnad->bna_lock held, because of cfg_flags
2116 * access.
2117 */
2118 static void
2119 bnad_q_num_init(struct bnad *bnad)
2120 {
2121 int rxps;
2122
2123 rxps = min((uint)num_online_cpus(),
2124 (uint)(BNAD_MAX_RXS * BNAD_MAX_RXPS_PER_RX));
2125
2126 if (!(bnad->cfg_flags & BNAD_CF_MSIX))
2127 rxps = 1; /* INTx */
2128
2129 bnad->num_rx = 1;
2130 bnad->num_tx = 1;
2131 bnad->num_rxp_per_rx = rxps;
2132 bnad->num_txq_per_tx = BNAD_TXQ_NUM;
2133 }
2134
2135 /*
2136 * Adjusts the Q numbers, given a number of msix vectors
2137 * Give preference to RSS as opposed to Tx priority Queues,
2138 * in such a case, just use 1 Tx Q
2139 * Called with bnad->bna_lock held b'cos of cfg_flags access
2140 */
2141 static void
2142 bnad_q_num_adjust(struct bnad *bnad, int msix_vectors)
2143 {
2144 bnad->num_txq_per_tx = 1;
2145 if ((msix_vectors >= (bnad->num_tx * bnad->num_txq_per_tx) +
2146 bnad_rxqs_per_cq + BNAD_MAILBOX_MSIX_VECTORS) &&
2147 (bnad->cfg_flags & BNAD_CF_MSIX)) {
2148 bnad->num_rxp_per_rx = msix_vectors -
2149 (bnad->num_tx * bnad->num_txq_per_tx) -
2150 BNAD_MAILBOX_MSIX_VECTORS;
2151 } else
2152 bnad->num_rxp_per_rx = 1;
2153 }
2154
2155 static void
2156 bnad_set_netdev_perm_addr(struct bnad *bnad)
2157 {
2158 struct net_device *netdev = bnad->netdev;
2159
2160 memcpy(netdev->perm_addr, &bnad->perm_addr, netdev->addr_len);
2161 if (is_zero_ether_addr(netdev->dev_addr))
2162 memcpy(netdev->dev_addr, &bnad->perm_addr, netdev->addr_len);
2163 }
2164
2165 /* Enable / disable device */
2166 static void
2167 bnad_device_disable(struct bnad *bnad)
2168 {
2169 unsigned long flags;
2170
2171 init_completion(&bnad->bnad_completions.ioc_comp);
2172
2173 spin_lock_irqsave(&bnad->bna_lock, flags);
2174 bna_device_disable(&bnad->bna.device, BNA_HARD_CLEANUP);
2175 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2176
2177 wait_for_completion(&bnad->bnad_completions.ioc_comp);
2178 }
2179
2180 static int
2181 bnad_device_enable(struct bnad *bnad)
2182 {
2183 int err = 0;
2184 unsigned long flags;
2185
2186 init_completion(&bnad->bnad_completions.ioc_comp);
2187
2188 spin_lock_irqsave(&bnad->bna_lock, flags);
2189 bna_device_enable(&bnad->bna.device);
2190 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2191
2192 wait_for_completion(&bnad->bnad_completions.ioc_comp);
2193
2194 if (bnad->bnad_completions.ioc_comp_status)
2195 err = bnad->bnad_completions.ioc_comp_status;
2196
2197 return err;
2198 }
2199
2200 /* Free BNA resources */
2201 static void
2202 bnad_res_free(struct bnad *bnad)
2203 {
2204 int i;
2205 struct bna_res_info *res_info = &bnad->res_info[0];
2206
2207 for (i = 0; i < BNA_RES_T_MAX; i++) {
2208 if (res_info[i].res_type == BNA_RES_T_MEM)
2209 bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
2210 else
2211 bnad_mbox_irq_free(bnad, &res_info[i].res_u.intr_info);
2212 }
2213 }
2214
2215 /* Allocates memory and interrupt resources for BNA */
2216 static int
2217 bnad_res_alloc(struct bnad *bnad)
2218 {
2219 int i, err;
2220 struct bna_res_info *res_info = &bnad->res_info[0];
2221
2222 for (i = 0; i < BNA_RES_T_MAX; i++) {
2223 if (res_info[i].res_type == BNA_RES_T_MEM)
2224 err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info);
2225 else
2226 err = bnad_mbox_irq_alloc(bnad,
2227 &res_info[i].res_u.intr_info);
2228 if (err)
2229 goto err_return;
2230 }
2231 return 0;
2232
2233 err_return:
2234 bnad_res_free(bnad);
2235 return err;
2236 }
2237
2238 /* Interrupt enable / disable */
2239 static void
2240 bnad_enable_msix(struct bnad *bnad)
2241 {
2242 int i, ret;
2243 unsigned long flags;
2244
2245 spin_lock_irqsave(&bnad->bna_lock, flags);
2246 if (!(bnad->cfg_flags & BNAD_CF_MSIX)) {
2247 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2248 return;
2249 }
2250 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2251
2252 if (bnad->msix_table)
2253 return;
2254
2255 bnad->msix_table =
2256 kcalloc(bnad->msix_num, sizeof(struct msix_entry), GFP_KERNEL);
2257
2258 if (!bnad->msix_table)
2259 goto intx_mode;
2260
2261 for (i = 0; i < bnad->msix_num; i++)
2262 bnad->msix_table[i].entry = i;
2263
2264 ret = pci_enable_msix(bnad->pcidev, bnad->msix_table, bnad->msix_num);
2265 if (ret > 0) {
2266 /* Not enough MSI-X vectors. */
2267
2268 spin_lock_irqsave(&bnad->bna_lock, flags);
2269 /* ret = #of vectors that we got */
2270 bnad_q_num_adjust(bnad, ret);
2271 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2272
2273 bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx)
2274 + (bnad->num_rx
2275 * bnad->num_rxp_per_rx) +
2276 BNAD_MAILBOX_MSIX_VECTORS;
2277
2278 /* Try once more with adjusted numbers */
2279 /* If this fails, fall back to INTx */
2280 ret = pci_enable_msix(bnad->pcidev, bnad->msix_table,
2281 bnad->msix_num);
2282 if (ret)
2283 goto intx_mode;
2284
2285 } else if (ret < 0)
2286 goto intx_mode;
2287 return;
2288
2289 intx_mode:
2290
2291 kfree(bnad->msix_table);
2292 bnad->msix_table = NULL;
2293 bnad->msix_num = 0;
2294 spin_lock_irqsave(&bnad->bna_lock, flags);
2295 bnad->cfg_flags &= ~BNAD_CF_MSIX;
2296 bnad_q_num_init(bnad);
2297 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2298 }
2299
2300 static void
2301 bnad_disable_msix(struct bnad *bnad)
2302 {
2303 u32 cfg_flags;
2304 unsigned long flags;
2305
2306 spin_lock_irqsave(&bnad->bna_lock, flags);
2307 cfg_flags = bnad->cfg_flags;
2308 if (bnad->cfg_flags & BNAD_CF_MSIX)
2309 bnad->cfg_flags &= ~BNAD_CF_MSIX;
2310 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2311
2312 if (cfg_flags & BNAD_CF_MSIX) {
2313 pci_disable_msix(bnad->pcidev);
2314 kfree(bnad->msix_table);
2315 bnad->msix_table = NULL;
2316 }
2317 }
2318
2319 /* Netdev entry points */
2320 static int
2321 bnad_open(struct net_device *netdev)
2322 {
2323 int err;
2324 struct bnad *bnad = netdev_priv(netdev);
2325 struct bna_pause_config pause_config;
2326 int mtu;
2327 unsigned long flags;
2328
2329 mutex_lock(&bnad->conf_mutex);
2330
2331 /* Tx */
2332 err = bnad_setup_tx(bnad, 0);
2333 if (err)
2334 goto err_return;
2335
2336 /* Rx */
2337 err = bnad_setup_rx(bnad, 0);
2338 if (err)
2339 goto cleanup_tx;
2340
2341 /* Port */
2342 pause_config.tx_pause = 0;
2343 pause_config.rx_pause = 0;
2344
2345 mtu = ETH_HLEN + bnad->netdev->mtu + ETH_FCS_LEN;
2346
2347 spin_lock_irqsave(&bnad->bna_lock, flags);
2348 bna_port_mtu_set(&bnad->bna.port, mtu, NULL);
2349 bna_port_pause_config(&bnad->bna.port, &pause_config, NULL);
2350 bna_port_enable(&bnad->bna.port);
2351 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2352
2353 /* Enable broadcast */
2354 bnad_enable_default_bcast(bnad);
2355
2356 /* Set the UCAST address */
2357 spin_lock_irqsave(&bnad->bna_lock, flags);
2358 bnad_mac_addr_set_locked(bnad, netdev->dev_addr);
2359 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2360
2361 /* Start the stats timer */
2362 bnad_stats_timer_start(bnad);
2363
2364 mutex_unlock(&bnad->conf_mutex);
2365
2366 return 0;
2367
2368 cleanup_tx:
2369 bnad_cleanup_tx(bnad, 0);
2370
2371 err_return:
2372 mutex_unlock(&bnad->conf_mutex);
2373 return err;
2374 }
2375
2376 static int
2377 bnad_stop(struct net_device *netdev)
2378 {
2379 struct bnad *bnad = netdev_priv(netdev);
2380 unsigned long flags;
2381
2382 mutex_lock(&bnad->conf_mutex);
2383
2384 /* Stop the stats timer */
2385 bnad_stats_timer_stop(bnad);
2386
2387 init_completion(&bnad->bnad_completions.port_comp);
2388
2389 spin_lock_irqsave(&bnad->bna_lock, flags);
2390 bna_port_disable(&bnad->bna.port, BNA_HARD_CLEANUP,
2391 bnad_cb_port_disabled);
2392 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2393
2394 wait_for_completion(&bnad->bnad_completions.port_comp);
2395
2396 bnad_cleanup_tx(bnad, 0);
2397 bnad_cleanup_rx(bnad, 0);
2398
2399 /* Synchronize mailbox IRQ */
2400 bnad_mbox_irq_sync(bnad);
2401
2402 mutex_unlock(&bnad->conf_mutex);
2403
2404 return 0;
2405 }
2406
2407 /* TX */
2408 /*
2409 * bnad_start_xmit : Netdev entry point for Transmit
2410 * Called under lock held by net_device
2411 */
2412 static netdev_tx_t
2413 bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2414 {
2415 struct bnad *bnad = netdev_priv(netdev);
2416
2417 u16 txq_prod, vlan_tag = 0;
2418 u32 unmap_prod, wis, wis_used, wi_range;
2419 u32 vectors, vect_id, i, acked;
2420 u32 tx_id;
2421 int err;
2422
2423 struct bnad_tx_info *tx_info;
2424 struct bna_tcb *tcb;
2425 struct bnad_unmap_q *unmap_q;
2426 dma_addr_t dma_addr;
2427 struct bna_txq_entry *txqent;
2428 bna_txq_wi_ctrl_flag_t flags;
2429
2430 if (unlikely
2431 (skb->len <= ETH_HLEN || skb->len > BFI_TX_MAX_DATA_PER_PKT)) {
2432 dev_kfree_skb(skb);
2433 return NETDEV_TX_OK;
2434 }
2435
2436 /*
2437 * Takes care of the Tx that is scheduled between clearing the flag
2438 * and the netif_stop_queue() call.
2439 */
2440 if (unlikely(!test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))) {
2441 dev_kfree_skb(skb);
2442 return NETDEV_TX_OK;
2443 }
2444
2445 tx_id = 0;
2446
2447 tx_info = &bnad->tx_info[tx_id];
2448 tcb = tx_info->tcb[tx_id];
2449 unmap_q = tcb->unmap_q;
2450
2451 vectors = 1 + skb_shinfo(skb)->nr_frags;
2452 if (vectors > BFI_TX_MAX_VECTORS_PER_PKT) {
2453 dev_kfree_skb(skb);
2454 return NETDEV_TX_OK;
2455 }
2456 wis = BNA_TXQ_WI_NEEDED(vectors); /* 4 vectors per work item */
2457 acked = 0;
2458 if (unlikely
2459 (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) ||
2460 vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) {
2461 if ((u16) (*tcb->hw_consumer_index) !=
2462 tcb->consumer_index &&
2463 !test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) {
2464 acked = bnad_free_txbufs(bnad, tcb);
2465 bna_ib_ack(tcb->i_dbell, acked);
2466 smp_mb__before_clear_bit();
2467 clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
2468 } else {
2469 netif_stop_queue(netdev);
2470 BNAD_UPDATE_CTR(bnad, netif_queue_stop);
2471 }
2472
2473 smp_mb();
2474 /*
2475 * Check again to deal with race condition between
2476 * netif_stop_queue here, and netif_wake_queue in
2477 * interrupt handler which is not inside netif tx lock.
2478 */
2479 if (likely
2480 (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) ||
2481 vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) {
2482 BNAD_UPDATE_CTR(bnad, netif_queue_stop);
2483 return NETDEV_TX_BUSY;
2484 } else {
2485 netif_wake_queue(netdev);
2486 BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
2487 }
2488 }
2489
2490 unmap_prod = unmap_q->producer_index;
2491 wis_used = 1;
2492 vect_id = 0;
2493 flags = 0;
2494
2495 txq_prod = tcb->producer_index;
2496 BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt, txqent, wi_range);
2497 BUG_ON(!(wi_range <= tcb->q_depth));
2498 txqent->hdr.wi.reserved = 0;
2499 txqent->hdr.wi.num_vectors = vectors;
2500 txqent->hdr.wi.opcode =
2501 htons((skb_is_gso(skb) ? BNA_TXQ_WI_SEND_LSO :
2502 BNA_TXQ_WI_SEND));
2503
2504 if (vlan_tx_tag_present(skb)) {
2505 vlan_tag = (u16) vlan_tx_tag_get(skb);
2506 flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN);
2507 }
2508 if (test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) {
2509 vlan_tag =
2510 (tcb->priority & 0x7) << 13 | (vlan_tag & 0x1fff);
2511 flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN);
2512 }
2513
2514 txqent->hdr.wi.vlan_tag = htons(vlan_tag);
2515
2516 if (skb_is_gso(skb)) {
2517 err = bnad_tso_prepare(bnad, skb);
2518 if (err) {
2519 dev_kfree_skb(skb);
2520 return NETDEV_TX_OK;
2521 }
2522 txqent->hdr.wi.lso_mss = htons(skb_is_gso(skb));
2523 flags |= (BNA_TXQ_WI_CF_IP_CKSUM | BNA_TXQ_WI_CF_TCP_CKSUM);
2524 txqent->hdr.wi.l4_hdr_size_n_offset =
2525 htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
2526 (tcp_hdrlen(skb) >> 2,
2527 skb_transport_offset(skb)));
2528 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
2529 u8 proto = 0;
2530
2531 txqent->hdr.wi.lso_mss = 0;
2532
2533 if (skb->protocol == htons(ETH_P_IP))
2534 proto = ip_hdr(skb)->protocol;
2535 else if (skb->protocol == htons(ETH_P_IPV6)) {
2536 /* nexthdr may not be TCP immediately. */
2537 proto = ipv6_hdr(skb)->nexthdr;
2538 }
2539 if (proto == IPPROTO_TCP) {
2540 flags |= BNA_TXQ_WI_CF_TCP_CKSUM;
2541 txqent->hdr.wi.l4_hdr_size_n_offset =
2542 htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
2543 (0, skb_transport_offset(skb)));
2544
2545 BNAD_UPDATE_CTR(bnad, tcpcsum_offload);
2546
2547 BUG_ON(!(skb_headlen(skb) >=
2548 skb_transport_offset(skb) + tcp_hdrlen(skb)));
2549
2550 } else if (proto == IPPROTO_UDP) {
2551 flags |= BNA_TXQ_WI_CF_UDP_CKSUM;
2552 txqent->hdr.wi.l4_hdr_size_n_offset =
2553 htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
2554 (0, skb_transport_offset(skb)));
2555
2556 BNAD_UPDATE_CTR(bnad, udpcsum_offload);
2557
2558 BUG_ON(!(skb_headlen(skb) >=
2559 skb_transport_offset(skb) +
2560 sizeof(struct udphdr)));
2561 } else {
2562 err = skb_checksum_help(skb);
2563 BNAD_UPDATE_CTR(bnad, csum_help);
2564 if (err) {
2565 dev_kfree_skb(skb);
2566 BNAD_UPDATE_CTR(bnad, csum_help_err);
2567 return NETDEV_TX_OK;
2568 }
2569 }
2570 } else {
2571 txqent->hdr.wi.lso_mss = 0;
2572 txqent->hdr.wi.l4_hdr_size_n_offset = 0;
2573 }
2574
2575 txqent->hdr.wi.flags = htons(flags);
2576
2577 txqent->hdr.wi.frame_length = htonl(skb->len);
2578
2579 unmap_q->unmap_array[unmap_prod].skb = skb;
2580 BUG_ON(!(skb_headlen(skb) <= BFI_TX_MAX_DATA_PER_VECTOR));
2581 txqent->vector[vect_id].length = htons(skb_headlen(skb));
2582 dma_addr = pci_map_single(bnad->pcidev, skb->data, skb_headlen(skb),
2583 PCI_DMA_TODEVICE);
2584 pci_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr,
2585 dma_addr);
2586
2587 BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr);
2588 BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
2589
2590 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2591 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
2592 u32 size = frag->size;
2593
2594 if (++vect_id == BFI_TX_MAX_VECTORS_PER_WI) {
2595 vect_id = 0;
2596 if (--wi_range)
2597 txqent++;
2598 else {
2599 BNA_QE_INDX_ADD(txq_prod, wis_used,
2600 tcb->q_depth);
2601 wis_used = 0;
2602 BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt,
2603 txqent, wi_range);
2604 BUG_ON(!(wi_range <= tcb->q_depth));
2605 }
2606 wis_used++;
2607 txqent->hdr.wi_ext.opcode = htons(BNA_TXQ_WI_EXTENSION);
2608 }
2609
2610 BUG_ON(!(size <= BFI_TX_MAX_DATA_PER_VECTOR));
2611 txqent->vector[vect_id].length = htons(size);
2612 dma_addr =
2613 pci_map_page(bnad->pcidev, frag->page,
2614 frag->page_offset, size,
2615 PCI_DMA_TODEVICE);
2616 pci_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr,
2617 dma_addr);
2618 BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr);
2619 BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
2620 }
2621
2622 unmap_q->producer_index = unmap_prod;
2623 BNA_QE_INDX_ADD(txq_prod, wis_used, tcb->q_depth);
2624 tcb->producer_index = txq_prod;
2625
2626 smp_mb();
2627 bna_txq_prod_indx_doorbell(tcb);
2628
2629 if ((u16) (*tcb->hw_consumer_index) != tcb->consumer_index)
2630 tasklet_schedule(&bnad->tx_free_tasklet);
2631
2632 return NETDEV_TX_OK;
2633 }
2634
2635 /*
2636 * Used spin_lock to synchronize reading of stats structures, which
2637 * is written by BNA under the same lock.
2638 */
2639 static struct rtnl_link_stats64 *
2640 bnad_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
2641 {
2642 struct bnad *bnad = netdev_priv(netdev);
2643 unsigned long flags;
2644
2645 spin_lock_irqsave(&bnad->bna_lock, flags);
2646
2647 bnad_netdev_qstats_fill(bnad, stats);
2648 bnad_netdev_hwstats_fill(bnad, stats);
2649
2650 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2651
2652 return stats;
2653 }
2654
2655 static void
2656 bnad_set_rx_mode(struct net_device *netdev)
2657 {
2658 struct bnad *bnad = netdev_priv(netdev);
2659 u32 new_mask, valid_mask;
2660 unsigned long flags;
2661
2662 spin_lock_irqsave(&bnad->bna_lock, flags);
2663
2664 new_mask = valid_mask = 0;
2665
2666 if (netdev->flags & IFF_PROMISC) {
2667 if (!(bnad->cfg_flags & BNAD_CF_PROMISC)) {
2668 new_mask = BNAD_RXMODE_PROMISC_DEFAULT;
2669 valid_mask = BNAD_RXMODE_PROMISC_DEFAULT;
2670 bnad->cfg_flags |= BNAD_CF_PROMISC;
2671 }
2672 } else {
2673 if (bnad->cfg_flags & BNAD_CF_PROMISC) {
2674 new_mask = ~BNAD_RXMODE_PROMISC_DEFAULT;
2675 valid_mask = BNAD_RXMODE_PROMISC_DEFAULT;
2676 bnad->cfg_flags &= ~BNAD_CF_PROMISC;
2677 }
2678 }
2679
2680 if (netdev->flags & IFF_ALLMULTI) {
2681 if (!(bnad->cfg_flags & BNAD_CF_ALLMULTI)) {
2682 new_mask |= BNA_RXMODE_ALLMULTI;
2683 valid_mask |= BNA_RXMODE_ALLMULTI;
2684 bnad->cfg_flags |= BNAD_CF_ALLMULTI;
2685 }
2686 } else {
2687 if (bnad->cfg_flags & BNAD_CF_ALLMULTI) {
2688 new_mask &= ~BNA_RXMODE_ALLMULTI;
2689 valid_mask |= BNA_RXMODE_ALLMULTI;
2690 bnad->cfg_flags &= ~BNAD_CF_ALLMULTI;
2691 }
2692 }
2693
2694 bna_rx_mode_set(bnad->rx_info[0].rx, new_mask, valid_mask, NULL);
2695
2696 if (!netdev_mc_empty(netdev)) {
2697 u8 *mcaddr_list;
2698 int mc_count = netdev_mc_count(netdev);
2699
2700 /* Index 0 holds the broadcast address */
2701 mcaddr_list =
2702 kzalloc((mc_count + 1) * ETH_ALEN,
2703 GFP_ATOMIC);
2704 if (!mcaddr_list)
2705 goto unlock;
2706
2707 memcpy(&mcaddr_list[0], &bnad_bcast_addr[0], ETH_ALEN);
2708
2709 /* Copy rest of the MC addresses */
2710 bnad_netdev_mc_list_get(netdev, mcaddr_list);
2711
2712 bna_rx_mcast_listset(bnad->rx_info[0].rx, mc_count + 1,
2713 mcaddr_list, NULL);
2714
2715 /* Should we enable BNAD_CF_ALLMULTI for err != 0 ? */
2716 kfree(mcaddr_list);
2717 }
2718 unlock:
2719 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2720 }
2721
2722 /*
2723 * bna_lock is used to sync writes to netdev->addr
2724 * conf_lock cannot be used since this call may be made
2725 * in a non-blocking context.
2726 */
2727 static int
2728 bnad_set_mac_address(struct net_device *netdev, void *mac_addr)
2729 {
2730 int err;
2731 struct bnad *bnad = netdev_priv(netdev);
2732 struct sockaddr *sa = (struct sockaddr *)mac_addr;
2733 unsigned long flags;
2734
2735 spin_lock_irqsave(&bnad->bna_lock, flags);
2736
2737 err = bnad_mac_addr_set_locked(bnad, sa->sa_data);
2738
2739 if (!err)
2740 memcpy(netdev->dev_addr, sa->sa_data, netdev->addr_len);
2741
2742 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2743
2744 return err;
2745 }
2746
2747 static int
2748 bnad_change_mtu(struct net_device *netdev, int new_mtu)
2749 {
2750 int mtu, err = 0;
2751 unsigned long flags;
2752
2753 struct bnad *bnad = netdev_priv(netdev);
2754
2755 if (new_mtu + ETH_HLEN < ETH_ZLEN || new_mtu > BNAD_JUMBO_MTU)
2756 return -EINVAL;
2757
2758 mutex_lock(&bnad->conf_mutex);
2759
2760 netdev->mtu = new_mtu;
2761
2762 mtu = ETH_HLEN + new_mtu + ETH_FCS_LEN;
2763
2764 spin_lock_irqsave(&bnad->bna_lock, flags);
2765 bna_port_mtu_set(&bnad->bna.port, mtu, NULL);
2766 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2767
2768 mutex_unlock(&bnad->conf_mutex);
2769 return err;
2770 }
2771
2772 static void
2773 bnad_vlan_rx_register(struct net_device *netdev,
2774 struct vlan_group *vlan_grp)
2775 {
2776 struct bnad *bnad = netdev_priv(netdev);
2777
2778 mutex_lock(&bnad->conf_mutex);
2779 bnad->vlan_grp = vlan_grp;
2780 mutex_unlock(&bnad->conf_mutex);
2781 }
2782
2783 static void
2784 bnad_vlan_rx_add_vid(struct net_device *netdev,
2785 unsigned short vid)
2786 {
2787 struct bnad *bnad = netdev_priv(netdev);
2788 unsigned long flags;
2789
2790 if (!bnad->rx_info[0].rx)
2791 return;
2792
2793 mutex_lock(&bnad->conf_mutex);
2794
2795 spin_lock_irqsave(&bnad->bna_lock, flags);
2796 bna_rx_vlan_add(bnad->rx_info[0].rx, vid);
2797 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2798
2799 mutex_unlock(&bnad->conf_mutex);
2800 }
2801
2802 static void
2803 bnad_vlan_rx_kill_vid(struct net_device *netdev,
2804 unsigned short vid)
2805 {
2806 struct bnad *bnad = netdev_priv(netdev);
2807 unsigned long flags;
2808
2809 if (!bnad->rx_info[0].rx)
2810 return;
2811
2812 mutex_lock(&bnad->conf_mutex);
2813
2814 spin_lock_irqsave(&bnad->bna_lock, flags);
2815 bna_rx_vlan_del(bnad->rx_info[0].rx, vid);
2816 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2817
2818 mutex_unlock(&bnad->conf_mutex);
2819 }
2820
2821 #ifdef CONFIG_NET_POLL_CONTROLLER
2822 static void
2823 bnad_netpoll(struct net_device *netdev)
2824 {
2825 struct bnad *bnad = netdev_priv(netdev);
2826 struct bnad_rx_info *rx_info;
2827 struct bnad_rx_ctrl *rx_ctrl;
2828 u32 curr_mask;
2829 int i, j;
2830
2831 if (!(bnad->cfg_flags & BNAD_CF_MSIX)) {
2832 bna_intx_disable(&bnad->bna, curr_mask);
2833 bnad_isr(bnad->pcidev->irq, netdev);
2834 bna_intx_enable(&bnad->bna, curr_mask);
2835 } else {
2836 for (i = 0; i < bnad->num_rx; i++) {
2837 rx_info = &bnad->rx_info[i];
2838 if (!rx_info->rx)
2839 continue;
2840 for (j = 0; j < bnad->num_rxp_per_rx; j++) {
2841 rx_ctrl = &rx_info->rx_ctrl[j];
2842 if (rx_ctrl->ccb) {
2843 bnad_disable_rx_irq(bnad,
2844 rx_ctrl->ccb);
2845 bnad_netif_rx_schedule_poll(bnad,
2846 rx_ctrl->ccb);
2847 }
2848 }
2849 }
2850 }
2851 }
2852 #endif
2853
2854 static const struct net_device_ops bnad_netdev_ops = {
2855 .ndo_open = bnad_open,
2856 .ndo_stop = bnad_stop,
2857 .ndo_start_xmit = bnad_start_xmit,
2858 .ndo_get_stats64 = bnad_get_stats64,
2859 .ndo_set_rx_mode = bnad_set_rx_mode,
2860 .ndo_set_multicast_list = bnad_set_rx_mode,
2861 .ndo_validate_addr = eth_validate_addr,
2862 .ndo_set_mac_address = bnad_set_mac_address,
2863 .ndo_change_mtu = bnad_change_mtu,
2864 .ndo_vlan_rx_register = bnad_vlan_rx_register,
2865 .ndo_vlan_rx_add_vid = bnad_vlan_rx_add_vid,
2866 .ndo_vlan_rx_kill_vid = bnad_vlan_rx_kill_vid,
2867 #ifdef CONFIG_NET_POLL_CONTROLLER
2868 .ndo_poll_controller = bnad_netpoll
2869 #endif
2870 };
2871
2872 static void
2873 bnad_netdev_init(struct bnad *bnad, bool using_dac)
2874 {
2875 struct net_device *netdev = bnad->netdev;
2876
2877 netdev->features |= NETIF_F_IPV6_CSUM;
2878 netdev->features |= NETIF_F_TSO;
2879 netdev->features |= NETIF_F_TSO6;
2880
2881 netdev->features |= NETIF_F_GRO;
2882 pr_warn("bna: GRO enabled, using kernel stack GRO\n");
2883
2884 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
2885
2886 if (using_dac)
2887 netdev->features |= NETIF_F_HIGHDMA;
2888
2889 netdev->features |=
2890 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
2891 NETIF_F_HW_VLAN_FILTER;
2892
2893 netdev->vlan_features = netdev->features;
2894 netdev->mem_start = bnad->mmio_start;
2895 netdev->mem_end = bnad->mmio_start + bnad->mmio_len - 1;
2896
2897 netdev->netdev_ops = &bnad_netdev_ops;
2898 bnad_set_ethtool_ops(netdev);
2899 }
2900
2901 /*
2902 * 1. Initialize the bnad structure
2903 * 2. Setup netdev pointer in pci_dev
2904 * 3. Initialze Tx free tasklet
2905 * 4. Initialize no. of TxQ & CQs & MSIX vectors
2906 */
2907 static int
2908 bnad_init(struct bnad *bnad,
2909 struct pci_dev *pdev, struct net_device *netdev)
2910 {
2911 unsigned long flags;
2912
2913 SET_NETDEV_DEV(netdev, &pdev->dev);
2914 pci_set_drvdata(pdev, netdev);
2915
2916 bnad->netdev = netdev;
2917 bnad->pcidev = pdev;
2918 bnad->mmio_start = pci_resource_start(pdev, 0);
2919 bnad->mmio_len = pci_resource_len(pdev, 0);
2920 bnad->bar0 = ioremap_nocache(bnad->mmio_start, bnad->mmio_len);
2921 if (!bnad->bar0) {
2922 dev_err(&pdev->dev, "ioremap for bar0 failed\n");
2923 pci_set_drvdata(pdev, NULL);
2924 return -ENOMEM;
2925 }
2926 pr_info("bar0 mapped to %p, len %llu\n", bnad->bar0,
2927 (unsigned long long) bnad->mmio_len);
2928
2929 spin_lock_irqsave(&bnad->bna_lock, flags);
2930 if (!bnad_msix_disable)
2931 bnad->cfg_flags = BNAD_CF_MSIX;
2932
2933 bnad->cfg_flags |= BNAD_CF_DIM_ENABLED;
2934
2935 bnad_q_num_init(bnad);
2936 spin_unlock_irqrestore(&bnad->bna_lock, flags);
2937
2938 bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx) +
2939 (bnad->num_rx * bnad->num_rxp_per_rx) +
2940 BNAD_MAILBOX_MSIX_VECTORS;
2941
2942 bnad->txq_depth = BNAD_TXQ_DEPTH;
2943 bnad->rxq_depth = BNAD_RXQ_DEPTH;
2944 bnad->rx_csum = true;
2945
2946 bnad->tx_coalescing_timeo = BFI_TX_COALESCING_TIMEO;
2947 bnad->rx_coalescing_timeo = BFI_RX_COALESCING_TIMEO;
2948
2949 tasklet_init(&bnad->tx_free_tasklet, bnad_tx_free_tasklet,
2950 (unsigned long)bnad);
2951
2952 return 0;
2953 }
2954
2955 /*
2956 * Must be called after bnad_pci_uninit()
2957 * so that iounmap() and pci_set_drvdata(NULL)
2958 * happens only after PCI uninitialization.
2959 */
2960 static void
2961 bnad_uninit(struct bnad *bnad)
2962 {
2963 if (bnad->bar0)
2964 iounmap(bnad->bar0);
2965 pci_set_drvdata(bnad->pcidev, NULL);
2966 }
2967
2968 /*
2969 * Initialize locks
2970 a) Per device mutes used for serializing configuration
2971 changes from OS interface
2972 b) spin lock used to protect bna state machine
2973 */
2974 static void
2975 bnad_lock_init(struct bnad *bnad)
2976 {
2977 spin_lock_init(&bnad->bna_lock);
2978 mutex_init(&bnad->conf_mutex);
2979 }
2980
2981 static void
2982 bnad_lock_uninit(struct bnad *bnad)
2983 {
2984 mutex_destroy(&bnad->conf_mutex);
2985 }
2986
2987 /* PCI Initialization */
2988 static int
2989 bnad_pci_init(struct bnad *bnad,
2990 struct pci_dev *pdev, bool *using_dac)
2991 {
2992 int err;
2993
2994 err = pci_enable_device(pdev);
2995 if (err)
2996 return err;
2997 err = pci_request_regions(pdev, BNAD_NAME);
2998 if (err)
2999 goto disable_device;
3000 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
3001 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
3002 *using_dac = 1;
3003 } else {
3004 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3005 if (err) {
3006 err = pci_set_consistent_dma_mask(pdev,
3007 DMA_BIT_MASK(32));
3008 if (err)
3009 goto release_regions;
3010 }
3011 *using_dac = 0;
3012 }
3013 pci_set_master(pdev);
3014 return 0;
3015
3016 release_regions:
3017 pci_release_regions(pdev);
3018 disable_device:
3019 pci_disable_device(pdev);
3020
3021 return err;
3022 }
3023
3024 static void
3025 bnad_pci_uninit(struct pci_dev *pdev)
3026 {
3027 pci_release_regions(pdev);
3028 pci_disable_device(pdev);
3029 }
3030
3031 static int __devinit
3032 bnad_pci_probe(struct pci_dev *pdev,
3033 const struct pci_device_id *pcidev_id)
3034 {
3035 bool using_dac;
3036 int err;
3037 struct bnad *bnad;
3038 struct bna *bna;
3039 struct net_device *netdev;
3040 struct bfa_pcidev pcidev_info;
3041 unsigned long flags;
3042
3043 pr_info("bnad_pci_probe : (0x%p, 0x%p) PCI Func : (%d)\n",
3044 pdev, pcidev_id, PCI_FUNC(pdev->devfn));
3045
3046 mutex_lock(&bnad_fwimg_mutex);
3047 if (!cna_get_firmware_buf(pdev)) {
3048 mutex_unlock(&bnad_fwimg_mutex);
3049 pr_warn("Failed to load Firmware Image!\n");
3050 return -ENODEV;
3051 }
3052 mutex_unlock(&bnad_fwimg_mutex);
3053
3054 /*
3055 * Allocates sizeof(struct net_device + struct bnad)
3056 * bnad = netdev->priv
3057 */
3058 netdev = alloc_etherdev(sizeof(struct bnad));
3059 if (!netdev) {
3060 dev_err(&pdev->dev, "alloc_etherdev failed\n");
3061 err = -ENOMEM;
3062 return err;
3063 }
3064 bnad = netdev_priv(netdev);
3065
3066 /*
3067 * PCI initialization
3068 * Output : using_dac = 1 for 64 bit DMA
3069 * = 0 for 32 bit DMA
3070 */
3071 err = bnad_pci_init(bnad, pdev, &using_dac);
3072 if (err)
3073 goto free_netdev;
3074
3075 bnad_lock_init(bnad);
3076 /*
3077 * Initialize bnad structure
3078 * Setup relation between pci_dev & netdev
3079 * Init Tx free tasklet
3080 */
3081 err = bnad_init(bnad, pdev, netdev);
3082 if (err)
3083 goto pci_uninit;
3084 /* Initialize netdev structure, set up ethtool ops */
3085 bnad_netdev_init(bnad, using_dac);
3086
3087 bnad_enable_msix(bnad);
3088
3089 /* Get resource requirement form bna */
3090 bna_res_req(&bnad->res_info[0]);
3091
3092 /* Allocate resources from bna */
3093 err = bnad_res_alloc(bnad);
3094 if (err)
3095 goto free_netdev;
3096
3097 bna = &bnad->bna;
3098
3099 /* Setup pcidev_info for bna_init() */
3100 pcidev_info.pci_slot = PCI_SLOT(bnad->pcidev->devfn);
3101 pcidev_info.pci_func = PCI_FUNC(bnad->pcidev->devfn);
3102 pcidev_info.device_id = bnad->pcidev->device;
3103 pcidev_info.pci_bar_kva = bnad->bar0;
3104
3105 mutex_lock(&bnad->conf_mutex);
3106
3107 spin_lock_irqsave(&bnad->bna_lock, flags);
3108 bna_init(bna, bnad, &pcidev_info, &bnad->res_info[0]);
3109 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3110
3111 bnad->stats.bna_stats = &bna->stats;
3112
3113 /* Set up timers */
3114 setup_timer(&bnad->bna.device.ioc.ioc_timer, bnad_ioc_timeout,
3115 ((unsigned long)bnad));
3116 setup_timer(&bnad->bna.device.ioc.hb_timer, bnad_ioc_hb_check,
3117 ((unsigned long)bnad));
3118 setup_timer(&bnad->bna.device.ioc.sem_timer, bnad_ioc_sem_timeout,
3119 ((unsigned long)bnad));
3120
3121 /* Now start the timer before calling IOC */
3122 mod_timer(&bnad->bna.device.ioc.ioc_timer,
3123 jiffies + msecs_to_jiffies(BNA_IOC_TIMER_FREQ));
3124
3125 /*
3126 * Start the chip
3127 * Don't care even if err != 0, bna state machine will
3128 * deal with it
3129 */
3130 err = bnad_device_enable(bnad);
3131
3132 /* Get the burnt-in mac */
3133 spin_lock_irqsave(&bnad->bna_lock, flags);
3134 bna_port_mac_get(&bna->port, &bnad->perm_addr);
3135 bnad_set_netdev_perm_addr(bnad);
3136 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3137
3138 mutex_unlock(&bnad->conf_mutex);
3139
3140 /*
3141 * Make sure the link appears down to the stack
3142 */
3143 netif_carrier_off(netdev);
3144
3145 /* Finally, reguister with net_device layer */
3146 err = register_netdev(netdev);
3147 if (err) {
3148 pr_err("BNA : Registering with netdev failed\n");
3149 goto disable_device;
3150 }
3151
3152 return 0;
3153
3154 disable_device:
3155 mutex_lock(&bnad->conf_mutex);
3156 bnad_device_disable(bnad);
3157 del_timer_sync(&bnad->bna.device.ioc.ioc_timer);
3158 del_timer_sync(&bnad->bna.device.ioc.sem_timer);
3159 del_timer_sync(&bnad->bna.device.ioc.hb_timer);
3160 spin_lock_irqsave(&bnad->bna_lock, flags);
3161 bna_uninit(bna);
3162 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3163 mutex_unlock(&bnad->conf_mutex);
3164
3165 bnad_res_free(bnad);
3166 bnad_disable_msix(bnad);
3167 pci_uninit:
3168 bnad_pci_uninit(pdev);
3169 bnad_lock_uninit(bnad);
3170 bnad_uninit(bnad);
3171 free_netdev:
3172 free_netdev(netdev);
3173 return err;
3174 }
3175
3176 static void __devexit
3177 bnad_pci_remove(struct pci_dev *pdev)
3178 {
3179 struct net_device *netdev = pci_get_drvdata(pdev);
3180 struct bnad *bnad;
3181 struct bna *bna;
3182 unsigned long flags;
3183
3184 if (!netdev)
3185 return;
3186
3187 pr_info("%s bnad_pci_remove\n", netdev->name);
3188 bnad = netdev_priv(netdev);
3189 bna = &bnad->bna;
3190
3191 unregister_netdev(netdev);
3192
3193 mutex_lock(&bnad->conf_mutex);
3194 bnad_device_disable(bnad);
3195 del_timer_sync(&bnad->bna.device.ioc.ioc_timer);
3196 del_timer_sync(&bnad->bna.device.ioc.sem_timer);
3197 del_timer_sync(&bnad->bna.device.ioc.hb_timer);
3198 spin_lock_irqsave(&bnad->bna_lock, flags);
3199 bna_uninit(bna);
3200 spin_unlock_irqrestore(&bnad->bna_lock, flags);
3201 mutex_unlock(&bnad->conf_mutex);
3202
3203 bnad_res_free(bnad);
3204 bnad_disable_msix(bnad);
3205 bnad_pci_uninit(pdev);
3206 bnad_lock_uninit(bnad);
3207 bnad_uninit(bnad);
3208 free_netdev(netdev);
3209 }
3210
3211 static const struct pci_device_id bnad_pci_id_table[] = {
3212 {
3213 PCI_DEVICE(PCI_VENDOR_ID_BROCADE,
3214 PCI_DEVICE_ID_BROCADE_CT),
3215 .class = PCI_CLASS_NETWORK_ETHERNET << 8,
3216 .class_mask = 0xffff00
3217 }, {0, }
3218 };
3219
3220 MODULE_DEVICE_TABLE(pci, bnad_pci_id_table);
3221
3222 static struct pci_driver bnad_pci_driver = {
3223 .name = BNAD_NAME,
3224 .id_table = bnad_pci_id_table,
3225 .probe = bnad_pci_probe,
3226 .remove = __devexit_p(bnad_pci_remove),
3227 };
3228
3229 static int __init
3230 bnad_module_init(void)
3231 {
3232 int err;
3233
3234 pr_info("Brocade 10G Ethernet driver\n");
3235
3236 bfa_nw_ioc_auto_recover(bnad_ioc_auto_recover);
3237
3238 err = pci_register_driver(&bnad_pci_driver);
3239 if (err < 0) {
3240 pr_err("bna : PCI registration failed in module init "
3241 "(%d)\n", err);
3242 return err;
3243 }
3244
3245 return 0;
3246 }
3247
3248 static void __exit
3249 bnad_module_exit(void)
3250 {
3251 pci_unregister_driver(&bnad_pci_driver);
3252
3253 if (bfi_fw)
3254 release_firmware(bfi_fw);
3255 }
3256
3257 module_init(bnad_module_init);
3258 module_exit(bnad_module_exit);
3259
3260 MODULE_AUTHOR("Brocade");
3261 MODULE_LICENSE("GPL");
3262 MODULE_DESCRIPTION("Brocade 10G PCIe Ethernet driver");
3263 MODULE_VERSION(BNAD_VERSION);
3264 MODULE_FIRMWARE(CNA_FW_FILE_CT);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree