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18#include "be.h"
19#include <asm/div64.h>
20
21MODULE_VERSION(DRV_VER);
22MODULE_DEVICE_TABLE(pci, be_dev_ids);
23MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
24MODULE_AUTHOR("ServerEngines Corporation");
25MODULE_LICENSE("GPL");
26
27static unsigned int rx_frag_size = 2048;
28module_param(rx_frag_size, uint, S_IRUGO);
29MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
30
31static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
32 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
33 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
34 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
35 { 0 }
36};
37MODULE_DEVICE_TABLE(pci, be_dev_ids);
38
39static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
40{
41 struct be_dma_mem *mem = &q->dma_mem;
42 if (mem->va)
43 pci_free_consistent(adapter->pdev, mem->size,
44 mem->va, mem->dma);
45}
46
47static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
48 u16 len, u16 entry_size)
49{
50 struct be_dma_mem *mem = &q->dma_mem;
51
52 memset(q, 0, sizeof(*q));
53 q->len = len;
54 q->entry_size = entry_size;
55 mem->size = len * entry_size;
56 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
57 if (!mem->va)
58 return -1;
59 memset(mem->va, 0, mem->size);
60 return 0;
61}
62
63static inline void *queue_head_node(struct be_queue_info *q)
64{
65 return q->dma_mem.va + q->head * q->entry_size;
66}
67
68static inline void *queue_tail_node(struct be_queue_info *q)
69{
70 return q->dma_mem.va + q->tail * q->entry_size;
71}
72
73static inline void queue_head_inc(struct be_queue_info *q)
74{
75 index_inc(&q->head, q->len);
76}
77
78static inline void queue_tail_inc(struct be_queue_info *q)
79{
80 index_inc(&q->tail, q->len);
81}
82
83static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
84{
85 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
86 u32 reg = ioread32(addr);
87 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
88 if (!enabled && enable) {
89 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
90 } else if (enabled && !enable) {
91 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
92 } else {
93 printk(KERN_WARNING DRV_NAME
94 ": bad value in membar_int_ctrl reg=0x%x\n", reg);
95 return;
96 }
97 iowrite32(reg, addr);
98}
99
100static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
101{
102 u32 val = 0;
103 val |= qid & DB_RQ_RING_ID_MASK;
104 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
105 iowrite32(val, ctrl->db + DB_RQ_OFFSET);
106}
107
108static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
109{
110 u32 val = 0;
111 val |= qid & DB_TXULP_RING_ID_MASK;
112 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
113 iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
114}
115
116static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
117 bool arm, bool clear_int, u16 num_popped)
118{
119 u32 val = 0;
120 val |= qid & DB_EQ_RING_ID_MASK;
121 if (arm)
122 val |= 1 << DB_EQ_REARM_SHIFT;
123 if (clear_int)
124 val |= 1 << DB_EQ_CLR_SHIFT;
125 val |= 1 << DB_EQ_EVNT_SHIFT;
126 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
127 iowrite32(val, ctrl->db + DB_EQ_OFFSET);
128}
129
130static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
131 bool arm, u16 num_popped)
132{
133 u32 val = 0;
134 val |= qid & DB_CQ_RING_ID_MASK;
135 if (arm)
136 val |= 1 << DB_CQ_REARM_SHIFT;
137 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
138 iowrite32(val, ctrl->db + DB_CQ_OFFSET);
139}
140
141
142static int be_mac_addr_set(struct net_device *netdev, void *p)
143{
144 struct be_adapter *adapter = netdev_priv(netdev);
145 struct sockaddr *addr = p;
146 int status = 0;
147
148 if (netif_running(netdev)) {
149 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
150 adapter->pmac_id);
151 if (status)
152 return status;
153
154 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
155 adapter->if_handle, &adapter->pmac_id);
156 }
157
158 if (!status)
159 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
160
161 return status;
162}
163
164static void netdev_stats_update(struct be_adapter *adapter)
165{
166 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
167 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
168 struct be_port_rxf_stats *port_stats =
169 &rxf_stats->port[adapter->port_num];
170 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
171
172 dev_stats->rx_packets = port_stats->rx_total_frames;
173 dev_stats->tx_packets = port_stats->tx_unicastframes +
174 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
175 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
176 (u64) port_stats->rx_bytes_lsd;
177 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
178 (u64) port_stats->tx_bytes_lsd;
179
180
181 dev_stats->rx_errors = port_stats->rx_crc_errors +
182 port_stats->rx_alignment_symbol_errors +
183 port_stats->rx_in_range_errors +
184 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
185
186
187 dev_stats->tx_errors = 0;
188
189
190 dev_stats->rx_dropped = 0;
191
192
193 dev_stats->tx_dropped = 0;
194
195 dev_stats->multicast = port_stats->tx_multicastframes;
196 dev_stats->collisions = 0;
197
198
199 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
200 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
201
202 dev_stats->rx_over_errors = 0;
203 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
204
205
206 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
207
208
209 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
210 port_stats->rx_input_fifo_overflow +
211 rxf_stats->rx_drops_no_pbuf;
212
213 dev_stats->rx_missed_errors = 0;
214
215 dev_stats->tx_aborted_errors = 0;
216 dev_stats->tx_carrier_errors = 0;
217 dev_stats->tx_fifo_errors = 0;
218 dev_stats->tx_heartbeat_errors = 0;
219 dev_stats->tx_window_errors = 0;
220}
221
222static void be_link_status_update(struct be_adapter *adapter)
223{
224 struct be_link_info *prev = &adapter->link;
225 struct be_link_info now = { 0 };
226 struct net_device *netdev = adapter->netdev;
227
228 be_cmd_link_status_query(&adapter->ctrl, &now);
229
230
231 if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
232 prev->speed == PHY_LINK_SPEED_ZERO)) {
233 if (now.speed == PHY_LINK_SPEED_ZERO) {
234 netif_stop_queue(netdev);
235 netif_carrier_off(netdev);
236 printk(KERN_INFO "%s: Link down\n", netdev->name);
237 } else {
238 netif_start_queue(netdev);
239 netif_carrier_on(netdev);
240 printk(KERN_INFO "%s: Link up\n", netdev->name);
241 }
242 }
243 *prev = now;
244}
245
246
247static void be_rx_eqd_update(struct be_adapter *adapter)
248{
249 struct be_ctrl_info *ctrl = &adapter->ctrl;
250 struct be_eq_obj *rx_eq = &adapter->rx_eq;
251 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
252 ulong now = jiffies;
253 u32 eqd;
254
255 if (!rx_eq->enable_aic)
256 return;
257
258
259 if (time_before(now, stats->rx_fps_jiffies)) {
260 stats->rx_fps_jiffies = now;
261 return;
262 }
263
264
265 if ((now - stats->rx_fps_jiffies) < HZ)
266 return;
267
268 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
269 ((now - stats->rx_fps_jiffies) / HZ);
270
271 stats->rx_fps_jiffies = now;
272 stats->be_prev_rx_frags = stats->be_rx_frags;
273 eqd = stats->be_rx_fps / 110000;
274 eqd = eqd << 3;
275 if (eqd > rx_eq->max_eqd)
276 eqd = rx_eq->max_eqd;
277 if (eqd < rx_eq->min_eqd)
278 eqd = rx_eq->min_eqd;
279 if (eqd < 10)
280 eqd = 0;
281 if (eqd != rx_eq->cur_eqd)
282 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
283
284 rx_eq->cur_eqd = eqd;
285}
286
287static struct net_device_stats *be_get_stats(struct net_device *dev)
288{
289 struct be_adapter *adapter = netdev_priv(dev);
290
291 return &adapter->stats.net_stats;
292}
293
294static u32 be_calc_rate(u64 bytes, unsigned long ticks)
295{
296 u64 rate = bytes;
297
298 do_div(rate, ticks / HZ);
299 rate <<= 3;
300 do_div(rate, 1000000ul);
301
302 return rate;
303}
304
305static void be_tx_rate_update(struct be_adapter *adapter)
306{
307 struct be_drvr_stats *stats = drvr_stats(adapter);
308 ulong now = jiffies;
309
310
311 if (time_before(now, stats->be_tx_jiffies)) {
312 stats->be_tx_jiffies = now;
313 return;
314 }
315
316
317 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
318 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
319 - stats->be_tx_bytes_prev,
320 now - stats->be_tx_jiffies);
321 stats->be_tx_jiffies = now;
322 stats->be_tx_bytes_prev = stats->be_tx_bytes;
323 }
324}
325
326static void be_tx_stats_update(struct be_adapter *adapter,
327 u32 wrb_cnt, u32 copied, bool stopped)
328{
329 struct be_drvr_stats *stats = drvr_stats(adapter);
330 stats->be_tx_reqs++;
331 stats->be_tx_wrbs += wrb_cnt;
332 stats->be_tx_bytes += copied;
333 if (stopped)
334 stats->be_tx_stops++;
335}
336
337
338static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
339{
340 int cnt = 0;
341 while (skb) {
342 if (skb->len > skb->data_len)
343 cnt++;
344 cnt += skb_shinfo(skb)->nr_frags;
345 skb = skb_shinfo(skb)->frag_list;
346 }
347
348 cnt++;
349 if (cnt & 1) {
350
351 cnt++;
352 *dummy = true;
353 } else
354 *dummy = false;
355 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
356 return cnt;
357}
358
359static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
360{
361 wrb->frag_pa_hi = upper_32_bits(addr);
362 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
363 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
364}
365
366static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
367 bool vlan, u32 wrb_cnt, u32 len)
368{
369 memset(hdr, 0, sizeof(*hdr));
370
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
372
373 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
376 hdr, skb_shinfo(skb)->gso_size);
377 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
378 if (is_tcp_pkt(skb))
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
380 else if (is_udp_pkt(skb))
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
382 }
383
384 if (vlan && vlan_tx_tag_present(skb)) {
385 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
386 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
387 hdr, vlan_tx_tag_get(skb));
388 }
389
390 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
391 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
392 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
393 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
394}
395
396
397static int make_tx_wrbs(struct be_adapter *adapter,
398 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
399{
400 u64 busaddr;
401 u32 i, copied = 0;
402 struct pci_dev *pdev = adapter->pdev;
403 struct sk_buff *first_skb = skb;
404 struct be_queue_info *txq = &adapter->tx_obj.q;
405 struct be_eth_wrb *wrb;
406 struct be_eth_hdr_wrb *hdr;
407
408 atomic_add(wrb_cnt, &txq->used);
409 hdr = queue_head_node(txq);
410 queue_head_inc(txq);
411
412 while (skb) {
413 if (skb->len > skb->data_len) {
414 int len = skb->len - skb->data_len;
415 busaddr = pci_map_single(pdev, skb->data, len,
416 PCI_DMA_TODEVICE);
417 wrb = queue_head_node(txq);
418 wrb_fill(wrb, busaddr, len);
419 be_dws_cpu_to_le(wrb, sizeof(*wrb));
420 queue_head_inc(txq);
421 copied += len;
422 }
423
424 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
425 struct skb_frag_struct *frag =
426 &skb_shinfo(skb)->frags[i];
427 busaddr = pci_map_page(pdev, frag->page,
428 frag->page_offset,
429 frag->size, PCI_DMA_TODEVICE);
430 wrb = queue_head_node(txq);
431 wrb_fill(wrb, busaddr, frag->size);
432 be_dws_cpu_to_le(wrb, sizeof(*wrb));
433 queue_head_inc(txq);
434 copied += frag->size;
435 }
436 skb = skb_shinfo(skb)->frag_list;
437 }
438
439 if (dummy_wrb) {
440 wrb = queue_head_node(txq);
441 wrb_fill(wrb, 0, 0);
442 be_dws_cpu_to_le(wrb, sizeof(*wrb));
443 queue_head_inc(txq);
444 }
445
446 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
447 wrb_cnt, copied);
448 be_dws_cpu_to_le(hdr, sizeof(*hdr));
449
450 return copied;
451}
452
453static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
454{
455 struct be_adapter *adapter = netdev_priv(netdev);
456 struct be_tx_obj *tx_obj = &adapter->tx_obj;
457 struct be_queue_info *txq = &tx_obj->q;
458 u32 wrb_cnt = 0, copied = 0;
459 u32 start = txq->head;
460 bool dummy_wrb, stopped = false;
461
462 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
463
464 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
465
466
467 BUG_ON(tx_obj->sent_skb_list[start]);
468 tx_obj->sent_skb_list[start] = skb;
469
470
471
472
473
474 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
475 netif_stop_queue(netdev);
476 stopped = true;
477 }
478
479 be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
480
481 netdev->trans_start = jiffies;
482
483 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
484 return NETDEV_TX_OK;
485}
486
487static int be_change_mtu(struct net_device *netdev, int new_mtu)
488{
489 struct be_adapter *adapter = netdev_priv(netdev);
490 if (new_mtu < BE_MIN_MTU ||
491 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
492 dev_info(&adapter->pdev->dev,
493 "MTU must be between %d and %d bytes\n",
494 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
495 return -EINVAL;
496 }
497 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
498 netdev->mtu, new_mtu);
499 netdev->mtu = new_mtu;
500 return 0;
501}
502
503
504
505
506
507
508static void be_vid_config(struct net_device *netdev)
509{
510 struct be_adapter *adapter = netdev_priv(netdev);
511 u16 vtag[BE_NUM_VLANS_SUPPORTED];
512 u16 ntags = 0, i;
513
514 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
515
516 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
517 if (adapter->vlan_tag[i]) {
518 vtag[ntags] = cpu_to_le16(i);
519 ntags++;
520 }
521 }
522 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
523 vtag, ntags, 1, 0);
524 } else {
525 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
526 NULL, 0, 1, 1);
527 }
528}
529
530static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
531{
532 struct be_adapter *adapter = netdev_priv(netdev);
533 struct be_eq_obj *rx_eq = &adapter->rx_eq;
534 struct be_eq_obj *tx_eq = &adapter->tx_eq;
535 struct be_ctrl_info *ctrl = &adapter->ctrl;
536
537 be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
538 be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
539 adapter->vlan_grp = grp;
540 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
541 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
542}
543
544static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
545{
546 struct be_adapter *adapter = netdev_priv(netdev);
547
548 adapter->num_vlans++;
549 adapter->vlan_tag[vid] = 1;
550
551 be_vid_config(netdev);
552}
553
554static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
555{
556 struct be_adapter *adapter = netdev_priv(netdev);
557
558 adapter->num_vlans--;
559 adapter->vlan_tag[vid] = 0;
560
561 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
562 be_vid_config(netdev);
563}
564
565static void be_set_multicast_filter(struct net_device *netdev)
566{
567 struct be_adapter *adapter = netdev_priv(netdev);
568 struct dev_mc_list *mc_ptr;
569 u8 mac_addr[32][ETH_ALEN];
570 int i = 0;
571
572 if (netdev->flags & IFF_ALLMULTI) {
573
574 be_cmd_mcast_mac_set(&adapter->ctrl,
575 adapter->if_handle, NULL, 0, true);
576 return;
577 }
578
579 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
580 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
581 if (++i >= 32) {
582 be_cmd_mcast_mac_set(&adapter->ctrl,
583 adapter->if_handle, &mac_addr[0][0], i, false);
584 i = 0;
585 }
586
587 }
588
589 if (i) {
590
591 be_cmd_mcast_mac_set(&adapter->ctrl,
592 adapter->if_handle, &mac_addr[0][0], i, false);
593 }
594}
595
596static void be_set_multicast_list(struct net_device *netdev)
597{
598 struct be_adapter *adapter = netdev_priv(netdev);
599
600 if (netdev->flags & IFF_PROMISC) {
601 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
602 } else {
603 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
604 be_set_multicast_filter(netdev);
605 }
606}
607
608static void be_rx_rate_update(struct be_adapter *adapter)
609{
610 struct be_drvr_stats *stats = drvr_stats(adapter);
611 ulong now = jiffies;
612
613
614 if (time_before(now, stats->be_rx_jiffies)) {
615 stats->be_rx_jiffies = now;
616 return;
617 }
618
619
620 if ((now - stats->be_rx_jiffies) < 2 * HZ)
621 return;
622
623 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
624 - stats->be_rx_bytes_prev,
625 now - stats->be_rx_jiffies);
626 stats->be_rx_jiffies = now;
627 stats->be_rx_bytes_prev = stats->be_rx_bytes;
628}
629
630static void be_rx_stats_update(struct be_adapter *adapter,
631 u32 pktsize, u16 numfrags)
632{
633 struct be_drvr_stats *stats = drvr_stats(adapter);
634
635 stats->be_rx_compl++;
636 stats->be_rx_frags += numfrags;
637 stats->be_rx_bytes += pktsize;
638}
639
640static struct be_rx_page_info *
641get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
642{
643 struct be_rx_page_info *rx_page_info;
644 struct be_queue_info *rxq = &adapter->rx_obj.q;
645
646 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
647 BUG_ON(!rx_page_info->page);
648
649 if (rx_page_info->last_page_user)
650 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
651 adapter->big_page_size, PCI_DMA_FROMDEVICE);
652
653 atomic_dec(&rxq->used);
654 return rx_page_info;
655}
656
657
658static void be_rx_compl_discard(struct be_adapter *adapter,
659 struct be_eth_rx_compl *rxcp)
660{
661 struct be_queue_info *rxq = &adapter->rx_obj.q;
662 struct be_rx_page_info *page_info;
663 u16 rxq_idx, i, num_rcvd;
664
665 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
666 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
667
668 for (i = 0; i < num_rcvd; i++) {
669 page_info = get_rx_page_info(adapter, rxq_idx);
670 put_page(page_info->page);
671 memset(page_info, 0, sizeof(*page_info));
672 index_inc(&rxq_idx, rxq->len);
673 }
674}
675
676
677
678
679
680static void skb_fill_rx_data(struct be_adapter *adapter,
681 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
682{
683 struct be_queue_info *rxq = &adapter->rx_obj.q;
684 struct be_rx_page_info *page_info;
685 u16 rxq_idx, i, num_rcvd;
686 u32 pktsize, hdr_len, curr_frag_len;
687 u8 *start;
688
689 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
690 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
691 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
692
693 page_info = get_rx_page_info(adapter, rxq_idx);
694
695 start = page_address(page_info->page) + page_info->page_offset;
696 prefetch(start);
697
698
699 curr_frag_len = min(pktsize, rx_frag_size);
700
701
702 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
703 memcpy(skb->data, start, hdr_len);
704 skb->len = curr_frag_len;
705 if (curr_frag_len <= BE_HDR_LEN) {
706
707 put_page(page_info->page);
708 skb->data_len = 0;
709 skb->tail += curr_frag_len;
710 } else {
711 skb_shinfo(skb)->nr_frags = 1;
712 skb_shinfo(skb)->frags[0].page = page_info->page;
713 skb_shinfo(skb)->frags[0].page_offset =
714 page_info->page_offset + hdr_len;
715 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
716 skb->data_len = curr_frag_len - hdr_len;
717 skb->tail += hdr_len;
718 }
719 memset(page_info, 0, sizeof(*page_info));
720
721 if (pktsize <= rx_frag_size) {
722 BUG_ON(num_rcvd != 1);
723 return;
724 }
725
726
727 pktsize -= curr_frag_len;
728 for (i = 1; i < num_rcvd; i++) {
729 index_inc(&rxq_idx, rxq->len);
730 page_info = get_rx_page_info(adapter, rxq_idx);
731
732 curr_frag_len = min(pktsize, rx_frag_size);
733
734 skb_shinfo(skb)->frags[i].page = page_info->page;
735 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
736 skb_shinfo(skb)->frags[i].size = curr_frag_len;
737 skb->len += curr_frag_len;
738 skb->data_len += curr_frag_len;
739 skb_shinfo(skb)->nr_frags++;
740 pktsize -= curr_frag_len;
741
742 memset(page_info, 0, sizeof(*page_info));
743 }
744
745 be_rx_stats_update(adapter, pktsize, num_rcvd);
746 return;
747}
748
749
750static void be_rx_compl_process(struct be_adapter *adapter,
751 struct be_eth_rx_compl *rxcp)
752{
753 struct sk_buff *skb;
754 u32 vtp, vid;
755 int l4_cksm;
756
757 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
758 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
759
760 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
761 if (!skb) {
762 if (net_ratelimit())
763 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
764 be_rx_compl_discard(adapter, rxcp);
765 return;
766 }
767
768 skb_reserve(skb, NET_IP_ALIGN);
769
770 skb_fill_rx_data(adapter, skb, rxcp);
771
772 if (l4_cksm && adapter->rx_csum)
773 skb->ip_summed = CHECKSUM_UNNECESSARY;
774 else
775 skb->ip_summed = CHECKSUM_NONE;
776
777 skb->truesize = skb->len + sizeof(struct sk_buff);
778 skb->protocol = eth_type_trans(skb, adapter->netdev);
779 skb->dev = adapter->netdev;
780
781 if (vtp) {
782 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
783 kfree_skb(skb);
784 return;
785 }
786 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
787 vid = be16_to_cpu(vid);
788 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
789 } else {
790 netif_receive_skb(skb);
791 }
792
793 adapter->netdev->last_rx = jiffies;
794
795 return;
796}
797
798
799static void be_rx_compl_process_lro(struct be_adapter *adapter,
800 struct be_eth_rx_compl *rxcp)
801{
802 struct be_rx_page_info *page_info;
803 struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
804 struct be_queue_info *rxq = &adapter->rx_obj.q;
805 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
806 u16 i, rxq_idx = 0, vid;
807
808 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
809 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
810 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
811 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
812
813 remaining = pkt_size;
814 for (i = 0; i < num_rcvd; i++) {
815 page_info = get_rx_page_info(adapter, rxq_idx);
816
817 curr_frag_len = min(remaining, rx_frag_size);
818
819 rx_frags[i].page = page_info->page;
820 rx_frags[i].page_offset = page_info->page_offset;
821 rx_frags[i].size = curr_frag_len;
822 remaining -= curr_frag_len;
823
824 index_inc(&rxq_idx, rxq->len);
825
826 memset(page_info, 0, sizeof(*page_info));
827 }
828
829 if (likely(!vlanf)) {
830 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
831 pkt_size, NULL, 0);
832 } else {
833 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
834 vid = be16_to_cpu(vid);
835
836 if (!adapter->vlan_grp || adapter->num_vlans == 0)
837 return;
838
839 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
840 rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
841 vid, NULL, 0);
842 }
843
844 be_rx_stats_update(adapter, pkt_size, num_rcvd);
845 return;
846}
847
848static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
849{
850 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
851
852 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
853 return NULL;
854
855 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
856
857 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
858
859 queue_tail_inc(&adapter->rx_obj.cq);
860 return rxcp;
861}
862
863static inline struct page *be_alloc_pages(u32 size)
864{
865 gfp_t alloc_flags = GFP_ATOMIC;
866 u32 order = get_order(size);
867 if (order > 0)
868 alloc_flags |= __GFP_COMP;
869 return alloc_pages(alloc_flags, order);
870}
871
872
873
874
875
876static void be_post_rx_frags(struct be_adapter *adapter)
877{
878 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
879 struct be_rx_page_info *page_info = NULL;
880 struct be_queue_info *rxq = &adapter->rx_obj.q;
881 struct page *pagep = NULL;
882 struct be_eth_rx_d *rxd;
883 u64 page_dmaaddr = 0, frag_dmaaddr;
884 u32 posted, page_offset = 0;
885
886 page_info = &page_info_tbl[rxq->head];
887 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
888 if (!pagep) {
889 pagep = be_alloc_pages(adapter->big_page_size);
890 if (unlikely(!pagep)) {
891 drvr_stats(adapter)->be_ethrx_post_fail++;
892 break;
893 }
894 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
895 adapter->big_page_size,
896 PCI_DMA_FROMDEVICE);
897 page_info->page_offset = 0;
898 } else {
899 get_page(pagep);
900 page_info->page_offset = page_offset + rx_frag_size;
901 }
902 page_offset = page_info->page_offset;
903 page_info->page = pagep;
904 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
905 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
906
907 rxd = queue_head_node(rxq);
908 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
909 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
910 queue_head_inc(rxq);
911
912
913 if ((page_offset + rx_frag_size + rx_frag_size) >
914 adapter->big_page_size) {
915 pagep = NULL;
916 page_info->last_page_user = true;
917 }
918 page_info = &page_info_tbl[rxq->head];
919 }
920 if (pagep)
921 page_info->last_page_user = true;
922
923 if (posted) {
924 atomic_add(posted, &rxq->used);
925 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
926 } else if (atomic_read(&rxq->used) == 0) {
927
928 adapter->rx_post_starved = true;
929 }
930
931 return;
932}
933
934static struct be_eth_tx_compl *
935be_tx_compl_get(struct be_adapter *adapter)
936{
937 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
938 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
939
940 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
941 return NULL;
942
943 be_dws_le_to_cpu(txcp, sizeof(*txcp));
944
945 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
946
947 queue_tail_inc(tx_cq);
948 return txcp;
949}
950
951static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
952{
953 struct be_queue_info *txq = &adapter->tx_obj.q;
954 struct be_eth_wrb *wrb;
955 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
956 struct sk_buff *sent_skb;
957 u64 busaddr;
958 u16 cur_index, num_wrbs = 0;
959
960 cur_index = txq->tail;
961 sent_skb = sent_skbs[cur_index];
962 BUG_ON(!sent_skb);
963 sent_skbs[cur_index] = NULL;
964
965 do {
966 cur_index = txq->tail;
967 wrb = queue_tail_node(txq);
968 be_dws_le_to_cpu(wrb, sizeof(*wrb));
969 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
970 if (busaddr != 0) {
971 pci_unmap_single(adapter->pdev, busaddr,
972 wrb->frag_len, PCI_DMA_TODEVICE);
973 }
974 num_wrbs++;
975 queue_tail_inc(txq);
976 } while (cur_index != last_index);
977
978 atomic_sub(num_wrbs, &txq->used);
979
980 kfree_skb(sent_skb);
981}
982
983static void be_rx_q_clean(struct be_adapter *adapter)
984{
985 struct be_rx_page_info *page_info;
986 struct be_queue_info *rxq = &adapter->rx_obj.q;
987 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
988 struct be_eth_rx_compl *rxcp;
989 u16 tail;
990
991
992 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
993 be_rx_compl_discard(adapter, rxcp);
994 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
995 }
996
997
998 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
999 for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1000 page_info = get_rx_page_info(adapter, tail);
1001 put_page(page_info->page);
1002 memset(page_info, 0, sizeof(*page_info));
1003 }
1004 BUG_ON(atomic_read(&rxq->used));
1005}
1006
1007static void be_tx_q_clean(struct be_adapter *adapter)
1008{
1009 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1010 struct sk_buff *sent_skb;
1011 struct be_queue_info *txq = &adapter->tx_obj.q;
1012 u16 last_index;
1013 bool dummy_wrb;
1014
1015 while (atomic_read(&txq->used)) {
1016 sent_skb = sent_skbs[txq->tail];
1017 last_index = txq->tail;
1018 index_adv(&last_index,
1019 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1020 be_tx_compl_process(adapter, last_index);
1021 }
1022}
1023
1024static void be_tx_queues_destroy(struct be_adapter *adapter)
1025{
1026 struct be_queue_info *q;
1027
1028 q = &adapter->tx_obj.q;
1029 if (q->created)
1030 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1031 be_queue_free(adapter, q);
1032
1033 q = &adapter->tx_obj.cq;
1034 if (q->created)
1035 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1036 be_queue_free(adapter, q);
1037
1038
1039
1040 be_tx_q_clean(adapter);
1041
1042 q = &adapter->tx_eq.q;
1043 if (q->created)
1044 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1045 be_queue_free(adapter, q);
1046}
1047
1048static int be_tx_queues_create(struct be_adapter *adapter)
1049{
1050 struct be_queue_info *eq, *q, *cq;
1051
1052 adapter->tx_eq.max_eqd = 0;
1053 adapter->tx_eq.min_eqd = 0;
1054 adapter->tx_eq.cur_eqd = 96;
1055 adapter->tx_eq.enable_aic = false;
1056
1057 eq = &adapter->tx_eq.q;
1058 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1059 return -1;
1060
1061
1062 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1063 goto tx_eq_free;
1064
1065 cq = &adapter->tx_obj.cq;
1066 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1067 sizeof(struct be_eth_tx_compl)))
1068 goto tx_eq_destroy;
1069
1070
1071 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1072 goto tx_cq_free;
1073
1074
1075 q = &adapter->tx_obj.q;
1076 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1077 goto tx_cq_destroy;
1078
1079
1080 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1081 goto tx_q_free;
1082 return 0;
1083
1084tx_q_free:
1085 be_queue_free(adapter, q);
1086tx_cq_destroy:
1087 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1088tx_cq_free:
1089 be_queue_free(adapter, cq);
1090tx_eq_destroy:
1091 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1092tx_eq_free:
1093 be_queue_free(adapter, eq);
1094 return -1;
1095}
1096
1097static void be_rx_queues_destroy(struct be_adapter *adapter)
1098{
1099 struct be_queue_info *q;
1100
1101 q = &adapter->rx_obj.q;
1102 if (q->created) {
1103 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1104 be_rx_q_clean(adapter);
1105 }
1106 be_queue_free(adapter, q);
1107
1108 q = &adapter->rx_obj.cq;
1109 if (q->created)
1110 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1111 be_queue_free(adapter, q);
1112
1113 q = &adapter->rx_eq.q;
1114 if (q->created)
1115 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1116 be_queue_free(adapter, q);
1117}
1118
1119static int be_rx_queues_create(struct be_adapter *adapter)
1120{
1121 struct be_queue_info *eq, *q, *cq;
1122 int rc;
1123
1124 adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1125 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1126 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1127 adapter->rx_eq.min_eqd = 0;
1128 adapter->rx_eq.cur_eqd = 0;
1129 adapter->rx_eq.enable_aic = true;
1130
1131
1132 eq = &adapter->rx_eq.q;
1133 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1134 sizeof(struct be_eq_entry));
1135 if (rc)
1136 return rc;
1137
1138
1139 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1140 if (rc)
1141 goto rx_eq_free;
1142
1143
1144 cq = &adapter->rx_obj.cq;
1145 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1146 sizeof(struct be_eth_rx_compl));
1147 if (rc)
1148 goto rx_eq_destroy;
1149
1150
1151 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1152 if (rc)
1153 goto rx_cq_free;
1154
1155
1156 q = &adapter->rx_obj.q;
1157 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1158 if (rc)
1159 goto rx_cq_destroy;
1160
1161
1162 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1163 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1164 if (rc)
1165 goto rx_q_free;
1166
1167 return 0;
1168rx_q_free:
1169 be_queue_free(adapter, q);
1170rx_cq_destroy:
1171 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1172rx_cq_free:
1173 be_queue_free(adapter, cq);
1174rx_eq_destroy:
1175 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1176rx_eq_free:
1177 be_queue_free(adapter, eq);
1178 return rc;
1179}
1180static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1181{
1182 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1183 u32 evt = entry->evt;
1184
1185 if (!evt)
1186 return false;
1187
1188 evt = le32_to_cpu(evt);
1189 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1190 entry->evt = 0;
1191 queue_tail_inc(&eq_obj->q);
1192 return true;
1193}
1194
1195static int event_handle(struct be_ctrl_info *ctrl,
1196 struct be_eq_obj *eq_obj)
1197{
1198 u16 rid = 0, num = 0;
1199
1200 while (event_get(eq_obj, &rid))
1201 num++;
1202
1203
1204 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1205 if (num)
1206 napi_schedule(&eq_obj->napi);
1207
1208 return num;
1209}
1210
1211static irqreturn_t be_intx(int irq, void *dev)
1212{
1213 struct be_adapter *adapter = dev;
1214 struct be_ctrl_info *ctrl = &adapter->ctrl;
1215 int rx, tx;
1216
1217 tx = event_handle(ctrl, &adapter->tx_eq);
1218 rx = event_handle(ctrl, &adapter->rx_eq);
1219
1220 if (rx || tx)
1221 return IRQ_HANDLED;
1222 else
1223 return IRQ_NONE;
1224}
1225
1226static irqreturn_t be_msix_rx(int irq, void *dev)
1227{
1228 struct be_adapter *adapter = dev;
1229
1230 event_handle(&adapter->ctrl, &adapter->rx_eq);
1231
1232 return IRQ_HANDLED;
1233}
1234
1235static irqreturn_t be_msix_tx(int irq, void *dev)
1236{
1237 struct be_adapter *adapter = dev;
1238
1239 event_handle(&adapter->ctrl, &adapter->tx_eq);
1240
1241 return IRQ_HANDLED;
1242}
1243
1244static inline bool do_lro(struct be_adapter *adapter,
1245 struct be_eth_rx_compl *rxcp)
1246{
1247 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1248 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1249
1250 if (err)
1251 drvr_stats(adapter)->be_rxcp_err++;
1252
1253 return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1254 false : true;
1255}
1256
1257int be_poll_rx(struct napi_struct *napi, int budget)
1258{
1259 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1260 struct be_adapter *adapter =
1261 container_of(rx_eq, struct be_adapter, rx_eq);
1262 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1263 struct be_eth_rx_compl *rxcp;
1264 u32 work_done;
1265
1266 for (work_done = 0; work_done < budget; work_done++) {
1267 rxcp = be_rx_compl_get(adapter);
1268 if (!rxcp)
1269 break;
1270
1271 if (do_lro(adapter, rxcp))
1272 be_rx_compl_process_lro(adapter, rxcp);
1273 else
1274 be_rx_compl_process(adapter, rxcp);
1275 }
1276
1277 lro_flush_all(&adapter->rx_obj.lro_mgr);
1278
1279
1280 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1281 be_post_rx_frags(adapter);
1282
1283
1284 if (work_done < budget) {
1285 napi_complete(napi);
1286 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1287 } else {
1288
1289 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1290 }
1291 return work_done;
1292}
1293
1294
1295int be_poll_tx(struct napi_struct *napi, int budget)
1296{
1297 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1298 struct be_adapter *adapter =
1299 container_of(tx_eq, struct be_adapter, tx_eq);
1300 struct be_tx_obj *tx_obj = &adapter->tx_obj;
1301 struct be_queue_info *tx_cq = &tx_obj->cq;
1302 struct be_queue_info *txq = &tx_obj->q;
1303 struct be_eth_tx_compl *txcp;
1304 u32 num_cmpl = 0;
1305 u16 end_idx;
1306
1307 while ((txcp = be_tx_compl_get(adapter))) {
1308 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1309 wrb_index, txcp);
1310 be_tx_compl_process(adapter, end_idx);
1311 num_cmpl++;
1312 }
1313
1314
1315
1316
1317 if (netif_queue_stopped(adapter->netdev) &&
1318 atomic_read(&txq->used) < txq->len / 2) {
1319 netif_wake_queue(adapter->netdev);
1320 }
1321
1322 napi_complete(napi);
1323
1324 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1325
1326 drvr_stats(adapter)->be_tx_events++;
1327 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1328
1329 return 1;
1330}
1331
1332static void be_worker(struct work_struct *work)
1333{
1334 struct be_adapter *adapter =
1335 container_of(work, struct be_adapter, work.work);
1336 int status;
1337
1338
1339 be_link_status_update(adapter);
1340
1341
1342 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1343 if (!status)
1344 netdev_stats_update(adapter);
1345
1346
1347 be_rx_eqd_update(adapter);
1348
1349 be_tx_rate_update(adapter);
1350 be_rx_rate_update(adapter);
1351
1352 if (adapter->rx_post_starved) {
1353 adapter->rx_post_starved = false;
1354 be_post_rx_frags(adapter);
1355 }
1356
1357 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1358}
1359
1360static void be_msix_enable(struct be_adapter *adapter)
1361{
1362 int i, status;
1363
1364 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1365 adapter->msix_entries[i].entry = i;
1366
1367 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1368 BE_NUM_MSIX_VECTORS);
1369 if (status == 0)
1370 adapter->msix_enabled = true;
1371 return;
1372}
1373
1374static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1375{
1376 return adapter->msix_entries[eq_id -
1377 8 * adapter->ctrl.pci_func].vector;
1378}
1379
1380static int be_msix_register(struct be_adapter *adapter)
1381{
1382 struct net_device *netdev = adapter->netdev;
1383 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1384 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1385 int status, vec;
1386
1387 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1388 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1389 status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1390 if (status)
1391 goto err;
1392
1393 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1394 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1395 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1396 if (status) {
1397 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1398 free_irq(vec, adapter);
1399 goto err;
1400 }
1401 return 0;
1402err:
1403 dev_warn(&adapter->pdev->dev,
1404 "MSIX Request IRQ failed - err %d\n", status);
1405 pci_disable_msix(adapter->pdev);
1406 adapter->msix_enabled = false;
1407 return status;
1408}
1409
1410static int be_irq_register(struct be_adapter *adapter)
1411{
1412 struct net_device *netdev = adapter->netdev;
1413 int status;
1414
1415 if (adapter->msix_enabled) {
1416 status = be_msix_register(adapter);
1417 if (status == 0)
1418 goto done;
1419 }
1420
1421
1422 netdev->irq = adapter->pdev->irq;
1423 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1424 adapter);
1425 if (status) {
1426 dev_err(&adapter->pdev->dev,
1427 "INTx request IRQ failed - err %d\n", status);
1428 return status;
1429 }
1430done:
1431 adapter->isr_registered = true;
1432 return 0;
1433}
1434
1435static void be_irq_unregister(struct be_adapter *adapter)
1436{
1437 struct net_device *netdev = adapter->netdev;
1438 int vec;
1439
1440 if (!adapter->isr_registered)
1441 return;
1442
1443
1444 if (!adapter->msix_enabled) {
1445 free_irq(netdev->irq, adapter);
1446 goto done;
1447 }
1448
1449
1450 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1451 free_irq(vec, adapter);
1452 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1453 free_irq(vec, adapter);
1454done:
1455 adapter->isr_registered = false;
1456 return;
1457}
1458
1459static int be_open(struct net_device *netdev)
1460{
1461 struct be_adapter *adapter = netdev_priv(netdev);
1462 struct be_ctrl_info *ctrl = &adapter->ctrl;
1463 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1464 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1465 u32 if_flags;
1466 int status;
1467
1468 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1469 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1470 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1471 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1472 false, &adapter->if_handle,
1473 &adapter->pmac_id);
1474 if (status != 0)
1475 goto do_none;
1476
1477 be_vid_config(netdev);
1478
1479 status = be_cmd_set_flow_control(ctrl, true, true);
1480 if (status != 0)
1481 goto if_destroy;
1482
1483 status = be_tx_queues_create(adapter);
1484 if (status != 0)
1485 goto if_destroy;
1486
1487 status = be_rx_queues_create(adapter);
1488 if (status != 0)
1489 goto tx_qs_destroy;
1490
1491
1492 be_post_rx_frags(adapter);
1493
1494 napi_enable(&rx_eq->napi);
1495 napi_enable(&tx_eq->napi);
1496
1497 be_irq_register(adapter);
1498
1499 be_intr_set(ctrl, true);
1500
1501
1502 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1503 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1504
1505
1506 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1507 be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1508
1509 be_link_status_update(adapter);
1510
1511 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1512 return 0;
1513
1514tx_qs_destroy:
1515 be_tx_queues_destroy(adapter);
1516if_destroy:
1517 be_cmd_if_destroy(ctrl, adapter->if_handle);
1518do_none:
1519 return status;
1520}
1521
1522static int be_close(struct net_device *netdev)
1523{
1524 struct be_adapter *adapter = netdev_priv(netdev);
1525 struct be_ctrl_info *ctrl = &adapter->ctrl;
1526 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1527 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1528 int vec;
1529
1530 cancel_delayed_work(&adapter->work);
1531
1532 netif_stop_queue(netdev);
1533 netif_carrier_off(netdev);
1534 adapter->link.speed = PHY_LINK_SPEED_ZERO;
1535
1536 be_intr_set(ctrl, false);
1537
1538 if (adapter->msix_enabled) {
1539 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1540 synchronize_irq(vec);
1541 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1542 synchronize_irq(vec);
1543 } else {
1544 synchronize_irq(netdev->irq);
1545 }
1546 be_irq_unregister(adapter);
1547
1548 napi_disable(&rx_eq->napi);
1549 napi_disable(&tx_eq->napi);
1550
1551 be_rx_queues_destroy(adapter);
1552 be_tx_queues_destroy(adapter);
1553
1554 be_cmd_if_destroy(ctrl, adapter->if_handle);
1555 return 0;
1556}
1557
1558static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1559 void **ip_hdr, void **tcpudp_hdr,
1560 u64 *hdr_flags, void *priv)
1561{
1562 struct ethhdr *eh;
1563 struct vlan_ethhdr *veh;
1564 struct iphdr *iph;
1565 u8 *va = page_address(frag->page) + frag->page_offset;
1566 unsigned long ll_hlen;
1567
1568 prefetch(va);
1569 eh = (struct ethhdr *)va;
1570 *mac_hdr = eh;
1571 ll_hlen = ETH_HLEN;
1572 if (eh->h_proto != htons(ETH_P_IP)) {
1573 if (eh->h_proto == htons(ETH_P_8021Q)) {
1574 veh = (struct vlan_ethhdr *)va;
1575 if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1576 return -1;
1577
1578 ll_hlen += VLAN_HLEN;
1579 } else {
1580 return -1;
1581 }
1582 }
1583 *hdr_flags = LRO_IPV4;
1584 iph = (struct iphdr *)(va + ll_hlen);
1585 *ip_hdr = iph;
1586 if (iph->protocol != IPPROTO_TCP)
1587 return -1;
1588 *hdr_flags |= LRO_TCP;
1589 *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1590
1591 return 0;
1592}
1593
1594static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1595{
1596 struct net_lro_mgr *lro_mgr;
1597
1598 lro_mgr = &adapter->rx_obj.lro_mgr;
1599 lro_mgr->dev = netdev;
1600 lro_mgr->features = LRO_F_NAPI;
1601 lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1602 lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1603 lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1604 lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1605 lro_mgr->get_frag_header = be_get_frag_header;
1606 lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1607}
1608
1609static struct net_device_ops be_netdev_ops = {
1610 .ndo_open = be_open,
1611 .ndo_stop = be_close,
1612 .ndo_start_xmit = be_xmit,
1613 .ndo_get_stats = be_get_stats,
1614 .ndo_set_rx_mode = be_set_multicast_list,
1615 .ndo_set_mac_address = be_mac_addr_set,
1616 .ndo_change_mtu = be_change_mtu,
1617 .ndo_validate_addr = eth_validate_addr,
1618 .ndo_vlan_rx_register = be_vlan_register,
1619 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1620 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1621};
1622
1623static void be_netdev_init(struct net_device *netdev)
1624{
1625 struct be_adapter *adapter = netdev_priv(netdev);
1626
1627 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1628 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1629 NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1630
1631 netdev->flags |= IFF_MULTICAST;
1632
1633 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1634
1635 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1636
1637 be_lro_init(adapter, netdev);
1638
1639 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1640 BE_NAPI_WEIGHT);
1641 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1642 BE_NAPI_WEIGHT);
1643
1644 netif_carrier_off(netdev);
1645 netif_stop_queue(netdev);
1646}
1647
1648static void be_unmap_pci_bars(struct be_adapter *adapter)
1649{
1650 struct be_ctrl_info *ctrl = &adapter->ctrl;
1651 if (ctrl->csr)
1652 iounmap(ctrl->csr);
1653 if (ctrl->db)
1654 iounmap(ctrl->db);
1655 if (ctrl->pcicfg)
1656 iounmap(ctrl->pcicfg);
1657}
1658
1659static int be_map_pci_bars(struct be_adapter *adapter)
1660{
1661 u8 __iomem *addr;
1662
1663 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1664 pci_resource_len(adapter->pdev, 2));
1665 if (addr == NULL)
1666 return -ENOMEM;
1667 adapter->ctrl.csr = addr;
1668
1669 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1670 128 * 1024);
1671 if (addr == NULL)
1672 goto pci_map_err;
1673 adapter->ctrl.db = addr;
1674
1675 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1676 pci_resource_len(adapter->pdev, 1));
1677 if (addr == NULL)
1678 goto pci_map_err;
1679 adapter->ctrl.pcicfg = addr;
1680
1681 return 0;
1682pci_map_err:
1683 be_unmap_pci_bars(adapter);
1684 return -ENOMEM;
1685}
1686
1687
1688static void be_ctrl_cleanup(struct be_adapter *adapter)
1689{
1690 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1691
1692 be_unmap_pci_bars(adapter);
1693
1694 if (mem->va)
1695 pci_free_consistent(adapter->pdev, mem->size,
1696 mem->va, mem->dma);
1697}
1698
1699
1700static int be_ctrl_init(struct be_adapter *adapter)
1701{
1702 struct be_ctrl_info *ctrl = &adapter->ctrl;
1703 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1704 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1705 int status;
1706 u32 val;
1707
1708 status = be_map_pci_bars(adapter);
1709 if (status)
1710 return status;
1711
1712 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1713 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1714 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1715 if (!mbox_mem_alloc->va) {
1716 be_unmap_pci_bars(adapter);
1717 return -1;
1718 }
1719 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1720 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1721 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1722 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1723 spin_lock_init(&ctrl->cmd_lock);
1724
1725 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1726 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1727 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1728 return 0;
1729}
1730
1731static void be_stats_cleanup(struct be_adapter *adapter)
1732{
1733 struct be_stats_obj *stats = &adapter->stats;
1734 struct be_dma_mem *cmd = &stats->cmd;
1735
1736 if (cmd->va)
1737 pci_free_consistent(adapter->pdev, cmd->size,
1738 cmd->va, cmd->dma);
1739}
1740
1741static int be_stats_init(struct be_adapter *adapter)
1742{
1743 struct be_stats_obj *stats = &adapter->stats;
1744 struct be_dma_mem *cmd = &stats->cmd;
1745
1746 cmd->size = sizeof(struct be_cmd_req_get_stats);
1747 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1748 if (cmd->va == NULL)
1749 return -1;
1750 return 0;
1751}
1752
1753static void __devexit be_remove(struct pci_dev *pdev)
1754{
1755 struct be_adapter *adapter = pci_get_drvdata(pdev);
1756 if (!adapter)
1757 return;
1758
1759 unregister_netdev(adapter->netdev);
1760
1761 be_stats_cleanup(adapter);
1762
1763 be_ctrl_cleanup(adapter);
1764
1765 if (adapter->msix_enabled) {
1766 pci_disable_msix(adapter->pdev);
1767 adapter->msix_enabled = false;
1768 }
1769
1770 pci_set_drvdata(pdev, NULL);
1771 pci_release_regions(pdev);
1772 pci_disable_device(pdev);
1773
1774 free_netdev(adapter->netdev);
1775}
1776
1777static int be_hw_up(struct be_adapter *adapter)
1778{
1779 struct be_ctrl_info *ctrl = &adapter->ctrl;
1780 int status;
1781
1782 status = be_cmd_POST(ctrl);
1783 if (status)
1784 return status;
1785
1786 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1787 if (status)
1788 return status;
1789
1790 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1791 return status;
1792}
1793
1794static int __devinit be_probe(struct pci_dev *pdev,
1795 const struct pci_device_id *pdev_id)
1796{
1797 int status = 0;
1798 struct be_adapter *adapter;
1799 struct net_device *netdev;
1800 struct be_ctrl_info *ctrl;
1801 u8 mac[ETH_ALEN];
1802
1803 status = pci_enable_device(pdev);
1804 if (status)
1805 goto do_none;
1806
1807 status = pci_request_regions(pdev, DRV_NAME);
1808 if (status)
1809 goto disable_dev;
1810 pci_set_master(pdev);
1811
1812 netdev = alloc_etherdev(sizeof(struct be_adapter));
1813 if (netdev == NULL) {
1814 status = -ENOMEM;
1815 goto rel_reg;
1816 }
1817 adapter = netdev_priv(netdev);
1818 adapter->pdev = pdev;
1819 pci_set_drvdata(pdev, adapter);
1820 adapter->netdev = netdev;
1821
1822 be_msix_enable(adapter);
1823
1824 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1825 if (!status) {
1826 netdev->features |= NETIF_F_HIGHDMA;
1827 } else {
1828 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1829 if (status) {
1830 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1831 goto free_netdev;
1832 }
1833 }
1834
1835 ctrl = &adapter->ctrl;
1836 status = be_ctrl_init(adapter);
1837 if (status)
1838 goto free_netdev;
1839
1840 status = be_stats_init(adapter);
1841 if (status)
1842 goto ctrl_clean;
1843
1844 status = be_hw_up(adapter);
1845 if (status)
1846 goto stats_clean;
1847
1848 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1849 true , 0);
1850 if (status)
1851 goto stats_clean;
1852 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1853
1854 INIT_DELAYED_WORK(&adapter->work, be_worker);
1855 be_netdev_init(netdev);
1856 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1857
1858 status = register_netdev(netdev);
1859 if (status != 0)
1860 goto stats_clean;
1861
1862 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1863 return 0;
1864
1865stats_clean:
1866 be_stats_cleanup(adapter);
1867ctrl_clean:
1868 be_ctrl_cleanup(adapter);
1869free_netdev:
1870 free_netdev(adapter->netdev);
1871rel_reg:
1872 pci_release_regions(pdev);
1873disable_dev:
1874 pci_disable_device(pdev);
1875do_none:
1876 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1877 return status;
1878}
1879
1880static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1881{
1882 struct be_adapter *adapter = pci_get_drvdata(pdev);
1883 struct net_device *netdev = adapter->netdev;
1884
1885 netif_device_detach(netdev);
1886 if (netif_running(netdev)) {
1887 rtnl_lock();
1888 be_close(netdev);
1889 rtnl_unlock();
1890 }
1891
1892 pci_save_state(pdev);
1893 pci_disable_device(pdev);
1894 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1895 return 0;
1896}
1897
1898static int be_resume(struct pci_dev *pdev)
1899{
1900 int status = 0;
1901 struct be_adapter *adapter = pci_get_drvdata(pdev);
1902 struct net_device *netdev = adapter->netdev;
1903
1904 netif_device_detach(netdev);
1905
1906 status = pci_enable_device(pdev);
1907 if (status)
1908 return status;
1909
1910 pci_set_power_state(pdev, 0);
1911 pci_restore_state(pdev);
1912
1913 if (netif_running(netdev)) {
1914 rtnl_lock();
1915 be_open(netdev);
1916 rtnl_unlock();
1917 }
1918 netif_device_attach(netdev);
1919 return 0;
1920}
1921
1922static struct pci_driver be_driver = {
1923 .name = DRV_NAME,
1924 .id_table = be_dev_ids,
1925 .probe = be_probe,
1926 .remove = be_remove,
1927 .suspend = be_suspend,
1928 .resume = be_resume
1929};
1930
1931static int __init be_init_module(void)
1932{
1933 if (rx_frag_size != 8192 && rx_frag_size != 4096
1934 && rx_frag_size != 2048) {
1935 printk(KERN_WARNING DRV_NAME
1936 " : Module param rx_frag_size must be 2048/4096/8192."
1937 " Using 2048\n");
1938 rx_frag_size = 2048;
1939 }
1940
1941 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1942 printk(KERN_WARNING DRV_NAME
1943 " : Bad module param rx_frag_size. Using 2048\n");
1944 rx_frag_size = 2048;
1945 }
1946
1947 return pci_register_driver(&be_driver);
1948}
1949module_init(be_init_module);
1950
1951static void __exit be_exit_module(void)
1952{
1953 pci_unregister_driver(&be_driver);
1954}
1955module_exit(be_exit_module);
1956
