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net: Add be2net driver.
[deliverable/linux.git] / drivers / net / benet / be_main.c
CommitLineData
6b7c5b94
SP		 1/*
2 * Copyright (C) 2005 - 2009 ServerEngines
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
10 * Contact Information:
11 * linux-drivers@serverengines.com
12 *
13 * ServerEngines
14 * 209 N. Fair Oaks Ave
15 * Sunnyvale, CA 94085
16 */
17
18#include "be.h"
19
20MODULE_VERSION(DRV_VER);
21MODULE_DEVICE_TABLE(pci, be_dev_ids);
22MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
23MODULE_AUTHOR("ServerEngines Corporation");
24MODULE_LICENSE("GPL");
25
26static unsigned int rx_frag_size = 2048;
27module_param(rx_frag_size, uint, S_IRUGO);
28MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
29
30#define BE_VENDOR_ID 0x19a2
31#define BE2_DEVICE_ID_1 0x0211
32static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
33 { PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) },
34 { 0 }
35};
36MODULE_DEVICE_TABLE(pci, be_dev_ids);
37
38static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
39{
40 struct be_dma_mem *mem = &q->dma_mem;
41 if (mem->va)
42 pci_free_consistent(adapter->pdev, mem->size,
43 mem->va, mem->dma);
44}
45
46static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
47 u16 len, u16 entry_size)
48{
49 struct be_dma_mem *mem = &q->dma_mem;
50
51 memset(q, 0, sizeof(*q));
52 q->len = len;
53 q->entry_size = entry_size;
54 mem->size = len * entry_size;
55 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
56 if (!mem->va)
57 return -1;
58 memset(mem->va, 0, mem->size);
59 return 0;
60}
61
62static inline void *queue_head_node(struct be_queue_info *q)
63{
64 return q->dma_mem.va + q->head * q->entry_size;
65}
66
67static inline void *queue_tail_node(struct be_queue_info *q)
68{
69 return q->dma_mem.va + q->tail * q->entry_size;
70}
71
72static inline void queue_head_inc(struct be_queue_info *q)
73{
74 index_inc(&q->head, q->len);
75}
76
77static inline void queue_tail_inc(struct be_queue_info *q)
78{
79 index_inc(&q->tail, q->len);
80}
81
82static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
83{
84 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
85 u32 reg = ioread32(addr);
86 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
87 if (!enabled && enable) {
88 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
89 } else if (enabled && !enable) {
90 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
91 } else {
92 printk(KERN_WARNING DRV_NAME
93 ": bad value in membar_int_ctrl reg=0x%x\n", reg);
94 return;
95 }
96 iowrite32(reg, addr);
97}
98
99static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
100{
101 u32 val = 0;
102 val |= qid & DB_RQ_RING_ID_MASK;
103 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
104 iowrite32(val, ctrl->db + DB_RQ_OFFSET);
105}
106
107static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
108{
109 u32 val = 0;
110 val |= qid & DB_TXULP_RING_ID_MASK;
111 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
112 iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
113}
114
115static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
116 bool arm, bool clear_int, u16 num_popped)
117{
118 u32 val = 0;
119 val |= qid & DB_EQ_RING_ID_MASK;
120 if (arm)
121 val |= 1 << DB_EQ_REARM_SHIFT;
122 if (clear_int)
123 val |= 1 << DB_EQ_CLR_SHIFT;
124 val |= 1 << DB_EQ_EVNT_SHIFT;
125 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
126 iowrite32(val, ctrl->db + DB_EQ_OFFSET);
127}
128
129static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
130 bool arm, u16 num_popped)
131{
132 u32 val = 0;
133 val |= qid & DB_CQ_RING_ID_MASK;
134 if (arm)
135 val |= 1 << DB_CQ_REARM_SHIFT;
136 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
137 iowrite32(val, ctrl->db + DB_CQ_OFFSET);
138}
139
140
141static int be_mac_addr_set(struct net_device *netdev, void *p)
142{
143 struct be_adapter *adapter = netdev_priv(netdev);
144 struct sockaddr *addr = p;
145 int status = 0;
146
147 if (netif_running(netdev)) {
148 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
149 adapter->pmac_id);
150 if (status)
151 return status;
152
153 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
154 adapter->if_handle, &adapter->pmac_id);
155 }
156
157 if (!status)
158 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
159
160 return status;
161}
162
163static void netdev_stats_update(struct be_adapter *adapter)
164{
165 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
166 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
167 struct be_port_rxf_stats *port_stats =
168 &rxf_stats->port[adapter->port_num];
169 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
170
171 dev_stats->rx_packets = port_stats->rx_total_frames;
172 dev_stats->tx_packets = port_stats->tx_unicastframes +
173 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
174 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
175 (u64) port_stats->rx_bytes_lsd;
176 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
177 (u64) port_stats->tx_bytes_lsd;
178
179 /* bad pkts received */
180 dev_stats->rx_errors = port_stats->rx_crc_errors +
181 port_stats->rx_alignment_symbol_errors +
182 port_stats->rx_in_range_errors +
183 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
184
185 /* packet transmit problems */
186 dev_stats->tx_errors = 0;
187
188 /* no space in linux buffers */
189 dev_stats->rx_dropped = 0;
190
191 /* no space available in linux */
192 dev_stats->tx_dropped = 0;
193
194 dev_stats->multicast = port_stats->tx_multicastframes;
195 dev_stats->collisions = 0;
196
197 /* detailed rx errors */
198 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
199 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
200 /* receive ring buffer overflow */
201 dev_stats->rx_over_errors = 0;
202 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
203
204 /* frame alignment errors */
205 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
206 /* receiver fifo overrun */
207 /* drops_no_pbuf is no per i/f, it's per BE card */
208 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
209 port_stats->rx_input_fifo_overflow +
210 rxf_stats->rx_drops_no_pbuf;
211 /* receiver missed packetd */
212 dev_stats->rx_missed_errors = 0;
213 /* detailed tx_errors */
214 dev_stats->tx_aborted_errors = 0;
215 dev_stats->tx_carrier_errors = 0;
216 dev_stats->tx_fifo_errors = 0;
217 dev_stats->tx_heartbeat_errors = 0;
218 dev_stats->tx_window_errors = 0;
219}
220
221static void be_link_status_update(struct be_adapter *adapter)
222{
223 struct be_link_info *prev = &adapter->link;
224 struct be_link_info now = { 0 };
225 struct net_device *netdev = adapter->netdev;
226
227 be_cmd_link_status_query(&adapter->ctrl, &now);
228
229 /* If link came up or went down */
230 if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
231 prev->speed == PHY_LINK_SPEED_ZERO)) {
232 if (now.speed == PHY_LINK_SPEED_ZERO) {
233 netif_stop_queue(netdev);
234 netif_carrier_off(netdev);
235 printk(KERN_INFO "%s: Link down\n", netdev->name);
236 } else {
237 netif_start_queue(netdev);
238 netif_carrier_on(netdev);
239 printk(KERN_INFO "%s: Link up\n", netdev->name);
240 }
241 }
242 *prev = now;
243}
244
245/* Update the EQ delay n BE based on the RX frags consumed / sec */
246static void be_rx_eqd_update(struct be_adapter *adapter)
247{
248 u32 eqd;
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
253 /* Update once a second */
254 if (((jiffies - stats->rx_fps_jiffies) < HZ) || rx_eq->enable_aic == 0)
255 return;
256
257 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
258 ((jiffies - stats->rx_fps_jiffies) / HZ);
259
260 stats->rx_fps_jiffies = jiffies;
261 stats->be_prev_rx_frags = stats->be_rx_frags;
262 eqd = stats->be_rx_fps / 110000;
263 eqd = eqd << 3;
264 if (eqd > rx_eq->max_eqd)
265 eqd = rx_eq->max_eqd;
266 if (eqd < rx_eq->min_eqd)
267 eqd = rx_eq->min_eqd;
268 if (eqd < 10)
269 eqd = 0;
270 if (eqd != rx_eq->cur_eqd)
271 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
272
273 rx_eq->cur_eqd = eqd;
274}
275
276static void be_worker(struct work_struct *work)
277{
278 struct be_adapter *adapter =
279 container_of(work, struct be_adapter, work.work);
280 int status;
281
282 /* Check link */
283 be_link_status_update(adapter);
284
285 /* Get Stats */
286 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
287 if (!status)
288 netdev_stats_update(adapter);
289
290 /* Set EQ delay */
291 be_rx_eqd_update(adapter);
292
293 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
294}
295
296static struct net_device_stats *be_get_stats(struct net_device *dev)
297{
298 struct be_adapter *adapter = netdev_priv(dev);
299
300 return &adapter->stats.net_stats;
301}
302
303static void be_tx_stats_update(struct be_adapter *adapter,
304 u32 wrb_cnt, u32 copied, bool stopped)
305{
306 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
307 stats->be_tx_reqs++;
308 stats->be_tx_wrbs += wrb_cnt;
309 stats->be_tx_bytes += copied;
310 if (stopped)
311 stats->be_tx_stops++;
312
313 /* Update tx rate once in two seconds */
314 if ((jiffies - stats->be_tx_jiffies) > 2 * HZ) {
315 u32 r;
316 r = (stats->be_tx_bytes - stats->be_tx_bytes_prev) /
317 ((u32) (jiffies - stats->be_tx_jiffies) / HZ);
318 r = (r / 1000000); /* M bytes/s */
319 stats->be_tx_rate = (r * 8); /* M bits/s */
320 stats->be_tx_jiffies = jiffies;
321 stats->be_tx_bytes_prev = stats->be_tx_bytes;
322 }
323}
324
325/* Determine number of WRB entries needed to xmit data in an skb */
326static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
327{
328 int cnt = 0;
329 while (skb) {
330 if (skb->len > skb->data_len)
331 cnt++;
332 cnt += skb_shinfo(skb)->nr_frags;
333 skb = skb_shinfo(skb)->frag_list;
334 }
335 /* to account for hdr wrb */
336 cnt++;
337 if (cnt & 1) {
338 /* add a dummy to make it an even num */
339 cnt++;
340 *dummy = true;
341 } else
342 *dummy = false;
343 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
344 return cnt;
345}
346
347static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
348{
349 wrb->frag_pa_hi = upper_32_bits(addr);
350 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
351 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
352}
353
354static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
355 bool vlan, u32 wrb_cnt, u32 len)
356{
357 memset(hdr, 0, sizeof(*hdr));
358
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
360
361 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
362 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
363 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
364 hdr, skb_shinfo(skb)->gso_size);
365 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
366 if (is_tcp_pkt(skb))
367 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
368 else if (is_udp_pkt(skb))
369 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
370 }
371
372 if (vlan && vlan_tx_tag_present(skb)) {
373 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
375 hdr, vlan_tx_tag_get(skb));
376 }
377
378 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
380 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
382}
383
384
385static int make_tx_wrbs(struct be_adapter *adapter,
386 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
387{
388 u64 busaddr;
389 u32 i, copied = 0;
390 struct pci_dev *pdev = adapter->pdev;
391 struct sk_buff *first_skb = skb;
392 struct be_queue_info *txq = &adapter->tx_obj.q;
393 struct be_eth_wrb *wrb;
394 struct be_eth_hdr_wrb *hdr;
395
396 atomic_add(wrb_cnt, &txq->used);
397 hdr = queue_head_node(txq);
398 queue_head_inc(txq);
399
400 while (skb) {
401 if (skb->len > skb->data_len) {
402 int len = skb->len - skb->data_len;
403 busaddr = pci_map_single(pdev, skb->data, len,
404 PCI_DMA_TODEVICE);
405 wrb = queue_head_node(txq);
406 wrb_fill(wrb, busaddr, len);
407 be_dws_cpu_to_le(wrb, sizeof(*wrb));
408 queue_head_inc(txq);
409 copied += len;
410 }
411
412 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
413 struct skb_frag_struct *frag =
414 &skb_shinfo(skb)->frags[i];
415 busaddr = pci_map_page(pdev, frag->page,
416 frag->page_offset,
417 frag->size, PCI_DMA_TODEVICE);
418 wrb = queue_head_node(txq);
419 wrb_fill(wrb, busaddr, frag->size);
420 be_dws_cpu_to_le(wrb, sizeof(*wrb));
421 queue_head_inc(txq);
422 copied += frag->size;
423 }
424 skb = skb_shinfo(skb)->frag_list;
425 }
426
427 if (dummy_wrb) {
428 wrb = queue_head_node(txq);
429 wrb_fill(wrb, 0, 0);
430 be_dws_cpu_to_le(wrb, sizeof(*wrb));
431 queue_head_inc(txq);
432 }
433
434 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
435 wrb_cnt, copied);
436 be_dws_cpu_to_le(hdr, sizeof(*hdr));
437
438 return copied;
439}
440
441static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
442{
443 struct be_adapter *adapter = netdev_priv(netdev);
444 struct be_tx_obj *tx_obj = &adapter->tx_obj;
445 struct be_queue_info *txq = &tx_obj->q;
446 u32 wrb_cnt = 0, copied = 0;
447 u32 start = txq->head;
448 bool dummy_wrb, stopped = false;
449
450 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
451
452 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
453
454 /* record the sent skb in the sent_skb table */
455 BUG_ON(tx_obj->sent_skb_list[start]);
456 tx_obj->sent_skb_list[start] = skb;
457
458 /* Ensure that txq has space for the next skb; Else stop the queue
459 * *BEFORE* ringing the tx doorbell, so that we serialze the
460 * tx compls of the current transmit which'll wake up the queue
461 */
462 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
463 netif_stop_queue(netdev);
464 stopped = true;
465 }
466
467 be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
468
469 netdev->trans_start = jiffies;
470
471 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
472 return NETDEV_TX_OK;
473}
474
475static int be_change_mtu(struct net_device *netdev, int new_mtu)
476{
477 struct be_adapter *adapter = netdev_priv(netdev);
478 if (new_mtu < BE_MIN_MTU ||
479 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
480 dev_info(&adapter->pdev->dev,
481 "MTU must be between %d and %d bytes\n",
482 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
483 return -EINVAL;
484 }
485 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
486 netdev->mtu, new_mtu);
487 netdev->mtu = new_mtu;
488 return 0;
489}
490
491/*
492 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
493 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
494 * set the BE in promiscuous VLAN mode.
495 */
496static void be_vids_config(struct net_device *netdev)
497{
498 struct be_adapter *adapter = netdev_priv(netdev);
499 u16 vtag[BE_NUM_VLANS_SUPPORTED];
500 u16 ntags = 0, i;
501
502 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
503 /* Construct VLAN Table to give to HW */
504 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
505 if (adapter->vlan_tag[i]) {
506 vtag[ntags] = cpu_to_le16(i);
507 ntags++;
508 }
509 }
510 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
511 vtag, ntags, 1, 0);
512 } else {
513 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
514 NULL, 0, 1, 1);
515 }
516}
517
518static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
519{
520 struct be_adapter *adapter = netdev_priv(netdev);
521 struct be_eq_obj *rx_eq = &adapter->rx_eq;
522 struct be_eq_obj *tx_eq = &adapter->tx_eq;
523 struct be_ctrl_info *ctrl = &adapter->ctrl;
524
525 be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
526 be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
527 adapter->vlan_grp = grp;
528 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
529 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
530}
531
532static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
533{
534 struct be_adapter *adapter = netdev_priv(netdev);
535
536 adapter->num_vlans++;
537 adapter->vlan_tag[vid] = 1;
538
539 be_vids_config(netdev);
540}
541
542static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
543{
544 struct be_adapter *adapter = netdev_priv(netdev);
545
546 adapter->num_vlans--;
547 adapter->vlan_tag[vid] = 0;
548
549 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
550 be_vids_config(netdev);
551}
552
553static void be_set_multicast_filter(struct net_device *netdev)
554{
555 struct be_adapter *adapter = netdev_priv(netdev);
556 struct dev_mc_list *mc_ptr;
557 u8 mac_addr[32][ETH_ALEN];
558 int i = 0;
559
560 if (netdev->flags & IFF_ALLMULTI) {
561 /* set BE in Multicast promiscuous */
562 be_cmd_mcast_mac_set(&adapter->ctrl,
563 adapter->if_handle, NULL, 0, true);
564 return;
565 }
566
567 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
568 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
569 if (++i >= 32) {
570 be_cmd_mcast_mac_set(&adapter->ctrl,
571 adapter->if_handle, &mac_addr[0][0], i, false);
572 i = 0;
573 }
574
575 }
576
577 if (i) {
578 /* reset the promiscuous mode also. */
579 be_cmd_mcast_mac_set(&adapter->ctrl,
580 adapter->if_handle, &mac_addr[0][0], i, false);
581 }
582}
583
584static void be_set_multicast_list(struct net_device *netdev)
585{
586 struct be_adapter *adapter = netdev_priv(netdev);
587
588 if (netdev->flags & IFF_PROMISC) {
589 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
590 } else {
591 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
592 be_set_multicast_filter(netdev);
593 }
594}
595
596static void be_rx_rate_update(struct be_adapter *adapter, u32 pktsize,
597 u16 numfrags)
598{
599 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
600 u32 rate;
601
602 stats->be_rx_compl++;
603 stats->be_rx_frags += numfrags;
604 stats->be_rx_bytes += pktsize;
605
606 /* Update the rate once in two seconds */
607 if ((jiffies - stats->be_rx_jiffies) < 2 * HZ)
608 return;
609
610 rate = (stats->be_rx_bytes - stats->be_rx_bytes_prev) /
611 ((u32) (jiffies - stats->be_rx_jiffies) / HZ);
612 rate = (rate / 1000000); /* MB/Sec */
613 stats->be_rx_rate = (rate * 8); /* Mega Bits/Sec */
614 stats->be_rx_jiffies = jiffies;
615 stats->be_rx_bytes_prev = stats->be_rx_bytes;
616}
617
618static struct be_rx_page_info *
619get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
620{
621 struct be_rx_page_info *rx_page_info;
622 struct be_queue_info *rxq = &adapter->rx_obj.q;
623
624 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
625 BUG_ON(!rx_page_info->page);
626
627 if (rx_page_info->last_page_user)
628 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
629 adapter->big_page_size, PCI_DMA_FROMDEVICE);
630
631 atomic_dec(&rxq->used);
632 return rx_page_info;
633}
634
635/* Throwaway the data in the Rx completion */
636static void be_rx_compl_discard(struct be_adapter *adapter,
637 struct be_eth_rx_compl *rxcp)
638{
639 struct be_queue_info *rxq = &adapter->rx_obj.q;
640 struct be_rx_page_info *page_info;
641 u16 rxq_idx, i, num_rcvd;
642
643 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
644 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
645
646 for (i = 0; i < num_rcvd; i++) {
647 page_info = get_rx_page_info(adapter, rxq_idx);
648 put_page(page_info->page);
649 memset(page_info, 0, sizeof(*page_info));
650 index_inc(&rxq_idx, rxq->len);
651 }
652}
653
654/*
655 * skb_fill_rx_data forms a complete skb for an ether frame
656 * indicated by rxcp.
657 */
658static void skb_fill_rx_data(struct be_adapter *adapter,
659 struct sk_buff *skb, 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 u32 pktsize, hdr_len, curr_frag_len;
665 u8 *start;
666
667 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
668 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
669 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
670
671 page_info = get_rx_page_info(adapter, rxq_idx);
672
673 start = page_address(page_info->page) + page_info->page_offset;
674 prefetch(start);
675
676 /* Copy data in the first descriptor of this completion */
677 curr_frag_len = min(pktsize, rx_frag_size);
678
679 /* Copy the header portion into skb_data */
680 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
681 memcpy(skb->data, start, hdr_len);
682 skb->len = curr_frag_len;
683 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
684 /* Complete packet has now been moved to data */
685 put_page(page_info->page);
686 skb->data_len = 0;
687 skb->tail += curr_frag_len;
688 } else {
689 skb_shinfo(skb)->nr_frags = 1;
690 skb_shinfo(skb)->frags[0].page = page_info->page;
691 skb_shinfo(skb)->frags[0].page_offset =
692 page_info->page_offset + hdr_len;
693 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
694 skb->data_len = curr_frag_len - hdr_len;
695 skb->tail += hdr_len;
696 }
697 memset(page_info, 0, sizeof(*page_info));
698
699 if (pktsize <= rx_frag_size) {
700 BUG_ON(num_rcvd != 1);
701 return;
702 }
703
704 /* More frags present for this completion */
705 pktsize -= curr_frag_len; /* account for above copied frag */
706 for (i = 1; i < num_rcvd; i++) {
707 index_inc(&rxq_idx, rxq->len);
708 page_info = get_rx_page_info(adapter, rxq_idx);
709
710 curr_frag_len = min(pktsize, rx_frag_size);
711
712 skb_shinfo(skb)->frags[i].page = page_info->page;
713 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
714 skb_shinfo(skb)->frags[i].size = curr_frag_len;
715 skb->len += curr_frag_len;
716 skb->data_len += curr_frag_len;
717 skb_shinfo(skb)->nr_frags++;
718 pktsize -= curr_frag_len;
719
720 memset(page_info, 0, sizeof(*page_info));
721 }
722
723 be_rx_rate_update(adapter, pktsize, num_rcvd);
724 return;
725}
726
727/* Process the RX completion indicated by rxcp when LRO is disabled */
728static void be_rx_compl_process(struct be_adapter *adapter,
729 struct be_eth_rx_compl *rxcp)
730{
731 struct sk_buff *skb;
732 u32 vtp, vid;
733 int l4_cksm;
734
735 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
736 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
737
738 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
739 if (!skb) {
740 if (net_ratelimit())
741 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
742 be_rx_compl_discard(adapter, rxcp);
743 return;
744 }
745
746 skb_reserve(skb, NET_IP_ALIGN);
747
748 skb_fill_rx_data(adapter, skb, rxcp);
749
750 if (l4_cksm && adapter->rx_csum)
751 skb->ip_summed = CHECKSUM_UNNECESSARY;
752 else
753 skb->ip_summed = CHECKSUM_NONE;
754
755 skb->truesize = skb->len + sizeof(struct sk_buff);
756 skb->protocol = eth_type_trans(skb, adapter->netdev);
757 skb->dev = adapter->netdev;
758
759 if (vtp) {
760 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
761 kfree_skb(skb);
762 return;
763 }
764 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
765 vid = be16_to_cpu(vid);
766 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
767 } else {
768 netif_receive_skb(skb);
769 }
770
771 adapter->netdev->last_rx = jiffies;
772
773 return;
774}
775
776/* Process the RX completion indicated by rxcp when LRO is enabled */
777static void be_rx_compl_process_lro(struct be_adapter *adapter,
778 struct be_eth_rx_compl *rxcp)
779{
780 struct be_rx_page_info *page_info;
781 struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
782 struct be_queue_info *rxq = &adapter->rx_obj.q;
783 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
784 u16 i, rxq_idx = 0, vid;
785
786 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
787 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
788 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
789 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
790
791 remaining = pkt_size;
792 for (i = 0; i < num_rcvd; i++) {
793 page_info = get_rx_page_info(adapter, rxq_idx);
794
795 curr_frag_len = min(remaining, rx_frag_size);
796
797 rx_frags[i].page = page_info->page;
798 rx_frags[i].page_offset = page_info->page_offset;
799 rx_frags[i].size = curr_frag_len;
800 remaining -= curr_frag_len;
801
802 index_inc(&rxq_idx, rxq->len);
803
804 memset(page_info, 0, sizeof(*page_info));
805 }
806
807 if (likely(!vlanf)) {
808 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
809 pkt_size, NULL, 0);
810 } else {
811 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
812 vid = be16_to_cpu(vid);
813
814 if (!adapter->vlan_grp || adapter->num_vlans == 0)
815 return;
816
817 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
818 rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
819 vid, NULL, 0);
820 }
821
822 be_rx_rate_update(adapter, pkt_size, num_rcvd);
823 return;
824}
825
826static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
827{
828 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
829
830 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
831 return NULL;
832
833 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
834
835 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
836
837 queue_tail_inc(&adapter->rx_obj.cq);
838 return rxcp;
839}
840
841static inline struct page *be_alloc_pages(u32 size)
842{
843 gfp_t alloc_flags = GFP_ATOMIC;
844 u32 order = get_order(size);
845 if (order > 0)
846 alloc_flags |= __GFP_COMP;
847 return alloc_pages(alloc_flags, order);
848}
849
850/*
851 * Allocate a page, split it to fragments of size rx_frag_size and post as
852 * receive buffers to BE
853 */
854static void be_post_rx_frags(struct be_adapter *adapter)
855{
856 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
857 struct be_rx_page_info *page_info = NULL;
858 struct be_queue_info *rxq = &adapter->rx_obj.q;
859 struct page *pagep = NULL;
860 struct be_eth_rx_d *rxd;
861 u64 page_dmaaddr = 0, frag_dmaaddr;
862 u32 posted, page_offset = 0;
863
864
865 page_info = &page_info_tbl[rxq->head];
866 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
867 if (!pagep) {
868 pagep = be_alloc_pages(adapter->big_page_size);
869 if (unlikely(!pagep)) {
870 drvr_stats(adapter)->be_ethrx_post_fail++;
871 break;
872 }
873 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
874 adapter->big_page_size,
875 PCI_DMA_FROMDEVICE);
876 page_info->page_offset = 0;
877 } else {
878 get_page(pagep);
879 page_info->page_offset = page_offset + rx_frag_size;
880 }
881 page_offset = page_info->page_offset;
882 page_info->page = pagep;
883 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
884 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
885
886 rxd = queue_head_node(rxq);
887 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
888 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
889 queue_head_inc(rxq);
890
891 /* Any space left in the current big page for another frag? */
892 if ((page_offset + rx_frag_size + rx_frag_size) >
893 adapter->big_page_size) {
894 pagep = NULL;
895 page_info->last_page_user = true;
896 }
897 page_info = &page_info_tbl[rxq->head];
898 }
899 if (pagep)
900 page_info->last_page_user = true;
901
902 if (posted) {
903 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
904 atomic_add(posted, &rxq->used);
905 }
906
907 return;
908}
909
910static struct be_eth_tx_compl *
911be_tx_compl_get(struct be_adapter *adapter)
912{
913 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
914 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
915
916 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
917 return NULL;
918
919 be_dws_le_to_cpu(txcp, sizeof(*txcp));
920
921 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
922
923 queue_tail_inc(tx_cq);
924 return txcp;
925}
926
927static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
928{
929 struct be_queue_info *txq = &adapter->tx_obj.q;
930 struct be_eth_wrb *wrb;
931 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
932 struct sk_buff *sent_skb;
933 u64 busaddr;
934 u16 cur_index, num_wrbs = 0;
935
936 cur_index = txq->tail;
937 sent_skb = sent_skbs[cur_index];
938 BUG_ON(!sent_skb);
939 sent_skbs[cur_index] = NULL;
940
941 do {
942 cur_index = txq->tail;
943 wrb = queue_tail_node(txq);
944 be_dws_le_to_cpu(wrb, sizeof(*wrb));
945 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
946 if (busaddr != 0) {
947 pci_unmap_single(adapter->pdev, busaddr,
948 wrb->frag_len, PCI_DMA_TODEVICE);
949 }
950 num_wrbs++;
951 queue_tail_inc(txq);
952 } while (cur_index != last_index);
953
954 atomic_sub(num_wrbs, &txq->used);
955
956 kfree_skb(sent_skb);
957}
958
959static void be_rx_q_clean(struct be_adapter *adapter)
960{
961 struct be_rx_page_info *page_info;
962 struct be_queue_info *rxq = &adapter->rx_obj.q;
963 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
964 struct be_eth_rx_compl *rxcp;
965 u16 tail;
966
967 /* First cleanup pending rx completions */
968 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
969 be_rx_compl_discard(adapter, rxcp);
970 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
971 }
972
973 /* Then free posted rx buffer that were not used */
974 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
975 for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
976 page_info = get_rx_page_info(adapter, tail);
977 put_page(page_info->page);
978 memset(page_info, 0, sizeof(*page_info));
979 }
980 BUG_ON(atomic_read(&rxq->used));
981}
982
983static void be_tx_q_clean(struct be_adapter *adapter)
984{
985 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
986 struct sk_buff *sent_skb;
987 struct be_queue_info *txq = &adapter->tx_obj.q;
988 u16 last_index;
989 bool dummy_wrb;
990
991 while (atomic_read(&txq->used)) {
992 sent_skb = sent_skbs[txq->tail];
993 last_index = txq->tail;
994 index_adv(&last_index,
995 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
996 be_tx_compl_process(adapter, last_index);
997 }
998}
999
1000static void be_tx_queues_destroy(struct be_adapter *adapter)
1001{
1002 struct be_queue_info *q;
1003
1004 q = &adapter->tx_obj.q;
1005 if (q->created)
1006 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1007 be_queue_free(adapter, q);
1008
1009 q = &adapter->tx_obj.cq;
1010 if (q->created)
1011 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1012 be_queue_free(adapter, q);
1013
1014 /* No more tx completions can be rcvd now; clean up if there are
1015 * any pending completions or pending tx requests */
1016 be_tx_q_clean(adapter);
1017
1018 q = &adapter->tx_eq.q;
1019 if (q->created)
1020 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1021 be_queue_free(adapter, q);
1022}
1023
1024static int be_tx_queues_create(struct be_adapter *adapter)
1025{
1026 struct be_queue_info *eq, *q, *cq;
1027
1028 adapter->tx_eq.max_eqd = 0;
1029 adapter->tx_eq.min_eqd = 0;
1030 adapter->tx_eq.cur_eqd = 96;
1031 adapter->tx_eq.enable_aic = false;
1032 /* Alloc Tx Event queue */
1033 eq = &adapter->tx_eq.q;
1034 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1035 return -1;
1036
1037 /* Ask BE to create Tx Event queue */
1038 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1039 goto tx_eq_free;
1040 /* Alloc TX eth compl queue */
1041 cq = &adapter->tx_obj.cq;
1042 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1043 sizeof(struct be_eth_tx_compl)))
1044 goto tx_eq_destroy;
1045
1046 /* Ask BE to create Tx eth compl queue */
1047 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1048 goto tx_cq_free;
1049
1050 /* Alloc TX eth queue */
1051 q = &adapter->tx_obj.q;
1052 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1053 goto tx_cq_destroy;
1054
1055 /* Ask BE to create Tx eth queue */
1056 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1057 goto tx_q_free;
1058 return 0;
1059
1060tx_q_free:
1061 be_queue_free(adapter, q);
1062tx_cq_destroy:
1063 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1064tx_cq_free:
1065 be_queue_free(adapter, cq);
1066tx_eq_destroy:
1067 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1068tx_eq_free:
1069 be_queue_free(adapter, eq);
1070 return -1;
1071}
1072
1073static void be_rx_queues_destroy(struct be_adapter *adapter)
1074{
1075 struct be_queue_info *q;
1076
1077 q = &adapter->rx_obj.q;
1078 if (q->created) {
1079 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1080 be_rx_q_clean(adapter);
1081 }
1082 be_queue_free(adapter, q);
1083
1084 q = &adapter->rx_obj.cq;
1085 if (q->created)
1086 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1087 be_queue_free(adapter, q);
1088
1089 q = &adapter->rx_eq.q;
1090 if (q->created)
1091 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1092 be_queue_free(adapter, q);
1093}
1094
1095static int be_rx_queues_create(struct be_adapter *adapter)
1096{
1097 struct be_queue_info *eq, *q, *cq;
1098 int rc;
1099
1100 adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1101 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1102 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1103 adapter->rx_eq.min_eqd = 0;
1104 adapter->rx_eq.cur_eqd = 0;
1105 adapter->rx_eq.enable_aic = true;
1106
1107 /* Alloc Rx Event queue */
1108 eq = &adapter->rx_eq.q;
1109 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1110 sizeof(struct be_eq_entry));
1111 if (rc)
1112 return rc;
1113
1114 /* Ask BE to create Rx Event queue */
1115 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1116 if (rc)
1117 goto rx_eq_free;
1118
1119 /* Alloc RX eth compl queue */
1120 cq = &adapter->rx_obj.cq;
1121 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1122 sizeof(struct be_eth_rx_compl));
1123 if (rc)
1124 goto rx_eq_destroy;
1125
1126 /* Ask BE to create Rx eth compl queue */
1127 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1128 if (rc)
1129 goto rx_cq_free;
1130
1131 /* Alloc RX eth queue */
1132 q = &adapter->rx_obj.q;
1133 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1134 if (rc)
1135 goto rx_cq_destroy;
1136
1137 /* Ask BE to create Rx eth queue */
1138 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1139 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1140 if (rc)
1141 goto rx_q_free;
1142
1143 return 0;
1144rx_q_free:
1145 be_queue_free(adapter, q);
1146rx_cq_destroy:
1147 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1148rx_cq_free:
1149 be_queue_free(adapter, cq);
1150rx_eq_destroy:
1151 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1152rx_eq_free:
1153 be_queue_free(adapter, eq);
1154 return rc;
1155}
1156static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1157{
1158 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1159 u32 evt = entry->evt;
1160
1161 if (!evt)
1162 return false;
1163
1164 evt = le32_to_cpu(evt);
1165 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1166 entry->evt = 0;
1167 queue_tail_inc(&eq_obj->q);
1168 return true;
1169}
1170
1171static int event_handle(struct be_ctrl_info *ctrl,
1172 struct be_eq_obj *eq_obj)
1173{
1174 u16 rid = 0, num = 0;
1175
1176 while (event_get(eq_obj, &rid))
1177 num++;
1178
1179 /* We can see an interrupt and no event */
1180 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1181 if (num)
1182 napi_schedule(&eq_obj->napi);
1183
1184 return num;
1185}
1186
1187static irqreturn_t be_intx(int irq, void *dev)
1188{
1189 struct be_adapter *adapter = dev;
1190 struct be_ctrl_info *ctrl = &adapter->ctrl;
1191 int rx, tx;
1192
1193 tx = event_handle(ctrl, &adapter->tx_eq);
1194 rx = event_handle(ctrl, &adapter->rx_eq);
1195
1196 if (rx || tx)
1197 return IRQ_HANDLED;
1198 else
1199 return IRQ_NONE;
1200}
1201
1202static irqreturn_t be_msix_rx(int irq, void *dev)
1203{
1204 struct be_adapter *adapter = dev;
1205
1206 event_handle(&adapter->ctrl, &adapter->rx_eq);
1207
1208 return IRQ_HANDLED;
1209}
1210
1211static irqreturn_t be_msix_tx(int irq, void *dev)
1212{
1213 struct be_adapter *adapter = dev;
1214
1215 event_handle(&adapter->ctrl, &adapter->tx_eq);
1216
1217 return IRQ_HANDLED;
1218}
1219
1220static inline bool do_lro(struct be_adapter *adapter,
1221 struct be_eth_rx_compl *rxcp)
1222{
1223 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1224 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1225
1226 if (err)
1227 drvr_stats(adapter)->be_rxcp_err++;
1228
1229 return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1230 false : true;
1231}
1232
1233int be_poll_rx(struct napi_struct *napi, int budget)
1234{
1235 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1236 struct be_adapter *adapter =
1237 container_of(rx_eq, struct be_adapter, rx_eq);
1238 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1239 struct be_eth_rx_compl *rxcp;
1240 u32 work_done;
1241
1242 for (work_done = 0; work_done < budget; work_done++) {
1243 rxcp = be_rx_compl_get(adapter);
1244 if (!rxcp)
1245 break;
1246
1247 if (do_lro(adapter, rxcp))
1248 be_rx_compl_process_lro(adapter, rxcp);
1249 else
1250 be_rx_compl_process(adapter, rxcp);
1251 }
1252
1253 lro_flush_all(&adapter->rx_obj.lro_mgr);
1254
1255 /* Refill the queue */
1256 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1257 be_post_rx_frags(adapter);
1258
1259 /* All consumed */
1260 if (work_done < budget) {
1261 napi_complete(napi);
1262 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1263 } else {
1264 /* More to be consumed; continue with interrupts disabled */
1265 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1266 }
1267 return work_done;
1268}
1269
1270/* For TX we don't honour budget; consume everything */
1271int be_poll_tx(struct napi_struct *napi, int budget)
1272{
1273 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1274 struct be_adapter *adapter =
1275 container_of(tx_eq, struct be_adapter, tx_eq);
1276 struct be_tx_obj *tx_obj = &adapter->tx_obj;
1277 struct be_queue_info *tx_cq = &tx_obj->cq;
1278 struct be_queue_info *txq = &tx_obj->q;
1279 struct be_eth_tx_compl *txcp;
1280 u32 num_cmpl = 0;
1281 u16 end_idx;
1282
1283 while ((txcp = be_tx_compl_get(adapter))) {
1284 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1285 wrb_index, txcp);
1286 be_tx_compl_process(adapter, end_idx);
1287 num_cmpl++;
1288 }
1289
1290 /* As Tx wrbs have been freed up, wake up netdev queue if
1291 * it was stopped due to lack of tx wrbs.
1292 */
1293 if (netif_queue_stopped(adapter->netdev) &&
1294 atomic_read(&txq->used) < txq->len / 2) {
1295 netif_wake_queue(adapter->netdev);
1296 }
1297
1298 napi_complete(napi);
1299
1300 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1301
1302 drvr_stats(adapter)->be_tx_events++;
1303 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1304
1305 return 1;
1306}
1307
1308static void be_msix_enable(struct be_adapter *adapter)
1309{
1310 int i, status;
1311
1312 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1313 adapter->msix_entries[i].entry = i;
1314
1315 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1316 BE_NUM_MSIX_VECTORS);
1317 if (status == 0)
1318 adapter->msix_enabled = true;
1319 return;
1320}
1321
1322static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1323{
1324 return adapter->msix_entries[eq_id -
1325 8 * adapter->ctrl.pci_func].vector;
1326}
1327
1328static int be_msix_register(struct be_adapter *adapter)
1329{
1330 struct net_device *netdev = adapter->netdev;
1331 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1332 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1333 int status, vec;
1334
1335 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1336 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1337 status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1338 if (status)
1339 goto err;
1340
1341 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1342 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1343 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1344 if (status) { /* Free TX IRQ */
1345 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1346 free_irq(vec, adapter);
1347 goto err;
1348 }
1349 return 0;
1350err:
1351 dev_warn(&adapter->pdev->dev,
1352 "MSIX Request IRQ failed - err %d\n", status);
1353 pci_disable_msix(adapter->pdev);
1354 adapter->msix_enabled = false;
1355 return status;
1356}
1357
1358static int be_irq_register(struct be_adapter *adapter)
1359{
1360 struct net_device *netdev = adapter->netdev;
1361 int status;
1362
1363 if (adapter->msix_enabled) {
1364 status = be_msix_register(adapter);
1365 if (status == 0)
1366 goto done;
1367 }
1368
1369 /* INTx */
1370 netdev->irq = adapter->pdev->irq;
1371 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1372 adapter);
1373 if (status) {
1374 dev_err(&adapter->pdev->dev,
1375 "INTx request IRQ failed - err %d\n", status);
1376 return status;
1377 }
1378done:
1379 adapter->isr_registered = true;
1380 return 0;
1381}
1382
1383static void be_irq_unregister(struct be_adapter *adapter)
1384{
1385 struct net_device *netdev = adapter->netdev;
1386 int vec;
1387
1388 if (!adapter->isr_registered)
1389 return;
1390
1391 /* INTx */
1392 if (!adapter->msix_enabled) {
1393 free_irq(netdev->irq, adapter);
1394 goto done;
1395 }
1396
1397 /* MSIx */
1398 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1399 free_irq(vec, adapter);
1400 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1401 free_irq(vec, adapter);
1402done:
1403 adapter->isr_registered = false;
1404 return;
1405}
1406
1407static int be_open(struct net_device *netdev)
1408{
1409 struct be_adapter *adapter = netdev_priv(netdev);
1410 struct be_ctrl_info *ctrl = &adapter->ctrl;
1411 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1412 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1413 u32 if_flags;
1414 int status;
1415
1416 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1417 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1418 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1419 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1420 false/* pmac_invalid */, &adapter->if_handle,
1421 &adapter->pmac_id);
1422 if (status != 0)
1423 goto do_none;
1424
1425 status = be_cmd_set_flow_control(ctrl, true, true);
1426 if (status != 0)
1427 goto if_destroy;
1428
1429 status = be_tx_queues_create(adapter);
1430 if (status != 0)
1431 goto if_destroy;
1432
1433 status = be_rx_queues_create(adapter);
1434 if (status != 0)
1435 goto tx_qs_destroy;
1436
1437 /* First time posting */
1438 be_post_rx_frags(adapter);
1439
1440 napi_enable(&rx_eq->napi);
1441 napi_enable(&tx_eq->napi);
1442
1443 be_irq_register(adapter);
1444
1445 be_intr_set(ctrl, true);
1446
1447 /* The evt queues are created in the unarmed state; arm them */
1448 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1449 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1450
1451 /* The compl queues are created in the unarmed state; arm them */
1452 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1453 be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1454
1455 be_link_status_update(adapter);
1456
1457 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1458 return 0;
1459
1460tx_qs_destroy:
1461 be_tx_queues_destroy(adapter);
1462if_destroy:
1463 be_cmd_if_destroy(ctrl, adapter->if_handle);
1464do_none:
1465 return status;
1466}
1467
1468static int be_close(struct net_device *netdev)
1469{
1470 struct be_adapter *adapter = netdev_priv(netdev);
1471 struct be_ctrl_info *ctrl = &adapter->ctrl;
1472 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1473 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1474 int vec;
1475
1476 cancel_delayed_work(&adapter->work);
1477
1478 netif_stop_queue(netdev);
1479 netif_carrier_off(netdev);
1480 adapter->link.speed = PHY_LINK_SPEED_ZERO;
1481
1482 be_intr_set(ctrl, false);
1483
1484 if (adapter->msix_enabled) {
1485 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1486 synchronize_irq(vec);
1487 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1488 synchronize_irq(vec);
1489 } else {
1490 synchronize_irq(netdev->irq);
1491 }
1492 be_irq_unregister(adapter);
1493
1494 napi_disable(&rx_eq->napi);
1495 napi_disable(&tx_eq->napi);
1496
1497 be_rx_queues_destroy(adapter);
1498 be_tx_queues_destroy(adapter);
1499
1500 be_cmd_if_destroy(ctrl, adapter->if_handle);
1501 return 0;
1502}
1503
1504static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1505 void **ip_hdr, void **tcpudp_hdr,
1506 u64 *hdr_flags, void *priv)
1507{
1508 struct ethhdr *eh;
1509 struct vlan_ethhdr *veh;
1510 struct iphdr *iph;
1511 u8 *va = page_address(frag->page) + frag->page_offset;
1512 unsigned long ll_hlen;
1513
1514 prefetch(va);
1515 eh = (struct ethhdr *)va;
1516 *mac_hdr = eh;
1517 ll_hlen = ETH_HLEN;
1518 if (eh->h_proto != htons(ETH_P_IP)) {
1519 if (eh->h_proto == htons(ETH_P_8021Q)) {
1520 veh = (struct vlan_ethhdr *)va;
1521 if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1522 return -1;
1523
1524 ll_hlen += VLAN_HLEN;
1525 } else {
1526 return -1;
1527 }
1528 }
1529 *hdr_flags = LRO_IPV4;
1530 iph = (struct iphdr *)(va + ll_hlen);
1531 *ip_hdr = iph;
1532 if (iph->protocol != IPPROTO_TCP)
1533 return -1;
1534 *hdr_flags |= LRO_TCP;
1535 *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1536
1537 return 0;
1538}
1539
1540static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1541{
1542 struct net_lro_mgr *lro_mgr;
1543
1544 lro_mgr = &adapter->rx_obj.lro_mgr;
1545 lro_mgr->dev = netdev;
1546 lro_mgr->features = LRO_F_NAPI;
1547 lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1548 lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1549 lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1550 lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1551 lro_mgr->get_frag_header = be_get_frag_header;
1552 lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1553}
1554
1555static struct net_device_ops be_netdev_ops = {
1556 .ndo_open = be_open,
1557 .ndo_stop = be_close,
1558 .ndo_start_xmit = be_xmit,
1559 .ndo_get_stats = be_get_stats,
1560 .ndo_set_rx_mode = be_set_multicast_list,
1561 .ndo_set_mac_address = be_mac_addr_set,
1562 .ndo_change_mtu = be_change_mtu,
1563 .ndo_validate_addr = eth_validate_addr,
1564 .ndo_vlan_rx_register = be_vlan_register,
1565 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1566 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1567};
1568
1569static void be_netdev_init(struct net_device *netdev)
1570{
1571 struct be_adapter *adapter = netdev_priv(netdev);
1572
1573 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1574 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1575 NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1576
1577 netdev->flags |= IFF_MULTICAST;
1578
1579 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1580
1581 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1582
1583 be_lro_init(adapter, netdev);
1584
1585 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1586 BE_NAPI_WEIGHT);
1587 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1588 BE_NAPI_WEIGHT);
1589
1590 netif_carrier_off(netdev);
1591 netif_stop_queue(netdev);
1592}
1593
1594static void be_unmap_pci_bars(struct be_adapter *adapter)
1595{
1596 struct be_ctrl_info *ctrl = &adapter->ctrl;
1597 if (ctrl->csr)
1598 iounmap(ctrl->csr);
1599 if (ctrl->db)
1600 iounmap(ctrl->db);
1601 if (ctrl->pcicfg)
1602 iounmap(ctrl->pcicfg);
1603}
1604
1605static int be_map_pci_bars(struct be_adapter *adapter)
1606{
1607 u8 __iomem *addr;
1608
1609 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1610 pci_resource_len(adapter->pdev, 2));
1611 if (addr == NULL)
1612 return -ENOMEM;
1613 adapter->ctrl.csr = addr;
1614
1615 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1616 128 * 1024);
1617 if (addr == NULL)
1618 goto pci_map_err;
1619 adapter->ctrl.db = addr;
1620
1621 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1622 pci_resource_len(adapter->pdev, 1));
1623 if (addr == NULL)
1624 goto pci_map_err;
1625 adapter->ctrl.pcicfg = addr;
1626
1627 return 0;
1628pci_map_err:
1629 be_unmap_pci_bars(adapter);
1630 return -ENOMEM;
1631}
1632
1633
1634static void be_ctrl_cleanup(struct be_adapter *adapter)
1635{
1636 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1637
1638 be_unmap_pci_bars(adapter);
1639
1640 if (mem->va)
1641 pci_free_consistent(adapter->pdev, mem->size,
1642 mem->va, mem->dma);
1643}
1644
1645/* Initialize the mbox required to send cmds to BE */
1646static int be_ctrl_init(struct be_adapter *adapter)
1647{
1648 struct be_ctrl_info *ctrl = &adapter->ctrl;
1649 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1650 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1651 int status;
1652 u32 val;
1653
1654 status = be_map_pci_bars(adapter);
1655 if (status)
1656 return status;
1657
1658 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1659 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1660 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1661 if (!mbox_mem_alloc->va) {
1662 be_unmap_pci_bars(adapter);
1663 return -1;
1664 }
1665 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1666 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1667 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1668 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1669 spin_lock_init(&ctrl->cmd_lock);
1670
1671 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1672 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1673 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1674 return 0;
1675}
1676
1677static void be_stats_cleanup(struct be_adapter *adapter)
1678{
1679 struct be_stats_obj *stats = &adapter->stats;
1680 struct be_dma_mem *cmd = &stats->cmd;
1681
1682 if (cmd->va)
1683 pci_free_consistent(adapter->pdev, cmd->size,
1684 cmd->va, cmd->dma);
1685}
1686
1687static int be_stats_init(struct be_adapter *adapter)
1688{
1689 struct be_stats_obj *stats = &adapter->stats;
1690 struct be_dma_mem *cmd = &stats->cmd;
1691
1692 cmd->size = sizeof(struct be_cmd_req_get_stats);
1693 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1694 if (cmd->va == NULL)
1695 return -1;
1696 return 0;
1697}
1698
1699static void __devexit be_remove(struct pci_dev *pdev)
1700{
1701 struct be_adapter *adapter = pci_get_drvdata(pdev);
1702 if (!adapter)
1703 return;
1704
1705 unregister_netdev(adapter->netdev);
1706
1707 be_stats_cleanup(adapter);
1708
1709 be_ctrl_cleanup(adapter);
1710
1711 if (adapter->msix_enabled) {
1712 pci_disable_msix(adapter->pdev);
1713 adapter->msix_enabled = false;
1714 }
1715
1716 pci_set_drvdata(pdev, NULL);
1717 pci_release_regions(pdev);
1718 pci_disable_device(pdev);
1719
1720 free_netdev(adapter->netdev);
1721}
1722
1723static int be_hw_up(struct be_adapter *adapter)
1724{
1725 struct be_ctrl_info *ctrl = &adapter->ctrl;
1726 int status;
1727
1728 status = be_cmd_POST(ctrl);
1729 if (status)
1730 return status;
1731
1732 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1733 if (status)
1734 return status;
1735
1736 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1737 return status;
1738}
1739
1740static int __devinit be_probe(struct pci_dev *pdev,
1741 const struct pci_device_id *pdev_id)
1742{
1743 int status = 0;
1744 struct be_adapter *adapter;
1745 struct net_device *netdev;
1746 struct be_ctrl_info *ctrl;
1747 u8 mac[ETH_ALEN];
1748
1749 status = pci_enable_device(pdev);
1750 if (status)
1751 goto do_none;
1752
1753 status = pci_request_regions(pdev, DRV_NAME);
1754 if (status)
1755 goto disable_dev;
1756 pci_set_master(pdev);
1757
1758 netdev = alloc_etherdev(sizeof(struct be_adapter));
1759 if (netdev == NULL) {
1760 status = -ENOMEM;
1761 goto rel_reg;
1762 }
1763 adapter = netdev_priv(netdev);
1764 adapter->pdev = pdev;
1765 pci_set_drvdata(pdev, adapter);
1766 adapter->netdev = netdev;
1767
1768 be_msix_enable(adapter);
1769
1770 status = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
1771 if (!status) {
1772 netdev->features |= NETIF_F_HIGHDMA;
1773 } else {
1774 status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1775 if (status) {
1776 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1777 goto free_netdev;
1778 }
1779 }
1780
1781 ctrl = &adapter->ctrl;
1782 status = be_ctrl_init(adapter);
1783 if (status)
1784 goto free_netdev;
1785
1786 status = be_stats_init(adapter);
1787 if (status)
1788 goto ctrl_clean;
1789
1790 status = be_hw_up(adapter);
1791 if (status)
1792 goto stats_clean;
1793
1794 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1795 true /* permanent */, 0);
1796 if (status)
1797 goto stats_clean;
1798 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1799
1800 INIT_DELAYED_WORK(&adapter->work, be_worker);
1801 be_netdev_init(netdev);
1802 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1803
1804 status = register_netdev(netdev);
1805 if (status != 0)
1806 goto stats_clean;
1807
1808 dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num);
1809 return 0;
1810
1811stats_clean:
1812 be_stats_cleanup(adapter);
1813ctrl_clean:
1814 be_ctrl_cleanup(adapter);
1815free_netdev:
1816 free_netdev(adapter->netdev);
1817rel_reg:
1818 pci_release_regions(pdev);
1819disable_dev:
1820 pci_disable_device(pdev);
1821do_none:
1822 dev_warn(&pdev->dev, BE_NAME " initialization failed\n");
1823 return status;
1824}
1825
1826static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1827{
1828 struct be_adapter *adapter = pci_get_drvdata(pdev);
1829 struct net_device *netdev = adapter->netdev;
1830
1831 netif_device_detach(netdev);
1832 if (netif_running(netdev)) {
1833 rtnl_lock();
1834 be_close(netdev);
1835 rtnl_unlock();
1836 }
1837
1838 pci_save_state(pdev);
1839 pci_disable_device(pdev);
1840 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1841 return 0;
1842}
1843
1844static int be_resume(struct pci_dev *pdev)
1845{
1846 int status = 0;
1847 struct be_adapter *adapter = pci_get_drvdata(pdev);
1848 struct net_device *netdev = adapter->netdev;
1849
1850 netif_device_detach(netdev);
1851
1852 status = pci_enable_device(pdev);
1853 if (status)
1854 return status;
1855
1856 pci_set_power_state(pdev, 0);
1857 pci_restore_state(pdev);
1858
1859 be_vids_config(netdev);
1860
1861 if (netif_running(netdev)) {
1862 rtnl_lock();
1863 be_open(netdev);
1864 rtnl_unlock();
1865 }
1866 netif_device_attach(netdev);
1867 return 0;
1868}
1869
1870static struct pci_driver be_driver = {
1871 .name = DRV_NAME,
1872 .id_table = be_dev_ids,
1873 .probe = be_probe,
1874 .remove = be_remove,
1875 .suspend = be_suspend,
1876 .resume = be_resume
1877};
1878
1879static int __init be_init_module(void)
1880{
1881 if (rx_frag_size != 8192 && rx_frag_size != 4096
1882 && rx_frag_size != 2048) {
1883 printk(KERN_WARNING DRV_NAME
1884 " : Module param rx_frag_size must be 2048/4096/8192."
1885 " Using 2048\n");
1886 rx_frag_size = 2048;
1887 }
1888 /* Ensure rx_frag_size is aligned to chache line */
1889 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1890 printk(KERN_WARNING DRV_NAME
1891 " : Bad module param rx_frag_size. Using 2048\n");
1892 rx_frag_size = 2048;
1893 }
1894
1895 return pci_register_driver(&be_driver);
1896}
1897module_init(be_init_module);
1898
1899static void __exit be_exit_module(void)
1900{
1901 pci_unregister_driver(&be_driver);
1902}
1903module_exit(be_exit_module);
Linux kernel - Deliverables
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