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be2net:Creating/destroying queues regardless of netif_running() in suspend/resume...
[deliverable/linux.git] / drivers / net / benet / be_main.c
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 #include "be_cmds.h"
20 #include <asm/div64.h>
21
22 MODULE_VERSION(DRV_VER);
23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
25 MODULE_AUTHOR("ServerEngines Corporation");
26 MODULE_LICENSE("GPL");
27
28 static unsigned int rx_frag_size = 2048;
29 module_param(rx_frag_size, uint, S_IRUGO);
30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
31
32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
33 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
34 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
35 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
36 { 0 }
37 };
38 MODULE_DEVICE_TABLE(pci, be_dev_ids);
39
40 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
41 {
42 struct be_dma_mem *mem = &q->dma_mem;
43 if (mem->va)
44 pci_free_consistent(adapter->pdev, mem->size,
45 mem->va, mem->dma);
46 }
47
48 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
49 u16 len, u16 entry_size)
50 {
51 struct be_dma_mem *mem = &q->dma_mem;
52
53 memset(q, 0, sizeof(*q));
54 q->len = len;
55 q->entry_size = entry_size;
56 mem->size = len * entry_size;
57 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
58 if (!mem->va)
59 return -1;
60 memset(mem->va, 0, mem->size);
61 return 0;
62 }
63
64 static void be_intr_set(struct be_adapter *adapter, bool enable)
65 {
66 u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
67 u32 reg = ioread32(addr);
68 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
69
70 if (!enabled && enable)
71 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
72 else if (enabled && !enable)
73 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
74 else
75 return;
76
77 iowrite32(reg, addr);
78 }
79
80 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
81 {
82 u32 val = 0;
83 val |= qid & DB_RQ_RING_ID_MASK;
84 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
85 iowrite32(val, adapter->db + DB_RQ_OFFSET);
86 }
87
88 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
89 {
90 u32 val = 0;
91 val |= qid & DB_TXULP_RING_ID_MASK;
92 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
93 iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
94 }
95
96 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
97 bool arm, bool clear_int, u16 num_popped)
98 {
99 u32 val = 0;
100 val |= qid & DB_EQ_RING_ID_MASK;
101 if (arm)
102 val |= 1 << DB_EQ_REARM_SHIFT;
103 if (clear_int)
104 val |= 1 << DB_EQ_CLR_SHIFT;
105 val |= 1 << DB_EQ_EVNT_SHIFT;
106 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
107 iowrite32(val, adapter->db + DB_EQ_OFFSET);
108 }
109
110 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
111 {
112 u32 val = 0;
113 val |= qid & DB_CQ_RING_ID_MASK;
114 if (arm)
115 val |= 1 << DB_CQ_REARM_SHIFT;
116 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
117 iowrite32(val, adapter->db + DB_CQ_OFFSET);
118 }
119
120
121 static int be_mac_addr_set(struct net_device *netdev, void *p)
122 {
123 struct be_adapter *adapter = netdev_priv(netdev);
124 struct sockaddr *addr = p;
125 int status = 0;
126
127 if (netif_running(netdev)) {
128 status = be_cmd_pmac_del(adapter, adapter->if_handle,
129 adapter->pmac_id);
130 if (status)
131 return status;
132
133 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
134 adapter->if_handle, &adapter->pmac_id);
135 }
136
137 if (!status)
138 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
139
140 return status;
141 }
142
143 static void netdev_stats_update(struct be_adapter *adapter)
144 {
145 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
146 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
147 struct be_port_rxf_stats *port_stats =
148 &rxf_stats->port[adapter->port_num];
149 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
150 struct be_erx_stats *erx_stats = &hw_stats->erx;
151
152 dev_stats->rx_packets = port_stats->rx_total_frames;
153 dev_stats->tx_packets = port_stats->tx_unicastframes +
154 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
155 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
156 (u64) port_stats->rx_bytes_lsd;
157 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
158 (u64) port_stats->tx_bytes_lsd;
159
160 /* bad pkts received */
161 dev_stats->rx_errors = port_stats->rx_crc_errors +
162 port_stats->rx_alignment_symbol_errors +
163 port_stats->rx_in_range_errors +
164 port_stats->rx_out_range_errors +
165 port_stats->rx_frame_too_long +
166 port_stats->rx_dropped_too_small +
167 port_stats->rx_dropped_too_short +
168 port_stats->rx_dropped_header_too_small +
169 port_stats->rx_dropped_tcp_length +
170 port_stats->rx_dropped_runt +
171 port_stats->rx_tcp_checksum_errs +
172 port_stats->rx_ip_checksum_errs +
173 port_stats->rx_udp_checksum_errs;
174
175 /* no space in linux buffers: best possible approximation */
176 dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
177
178 /* detailed rx errors */
179 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
180 port_stats->rx_out_range_errors +
181 port_stats->rx_frame_too_long;
182
183 /* receive ring buffer overflow */
184 dev_stats->rx_over_errors = 0;
185
186 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
187
188 /* frame alignment errors */
189 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
190
191 /* receiver fifo overrun */
192 /* drops_no_pbuf is no per i/f, it's per BE card */
193 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
194 port_stats->rx_input_fifo_overflow +
195 rxf_stats->rx_drops_no_pbuf;
196 /* receiver missed packetd */
197 dev_stats->rx_missed_errors = 0;
198
199 /* packet transmit problems */
200 dev_stats->tx_errors = 0;
201
202 /* no space available in linux */
203 dev_stats->tx_dropped = 0;
204
205 dev_stats->multicast = port_stats->tx_multicastframes;
206 dev_stats->collisions = 0;
207
208 /* detailed tx_errors */
209 dev_stats->tx_aborted_errors = 0;
210 dev_stats->tx_carrier_errors = 0;
211 dev_stats->tx_fifo_errors = 0;
212 dev_stats->tx_heartbeat_errors = 0;
213 dev_stats->tx_window_errors = 0;
214 }
215
216 void be_link_status_update(struct be_adapter *adapter, bool link_up)
217 {
218 struct net_device *netdev = adapter->netdev;
219
220 /* If link came up or went down */
221 if (adapter->link_up != link_up) {
222 if (link_up) {
223 netif_start_queue(netdev);
224 netif_carrier_on(netdev);
225 printk(KERN_INFO "%s: Link up\n", netdev->name);
226 } else {
227 netif_stop_queue(netdev);
228 netif_carrier_off(netdev);
229 printk(KERN_INFO "%s: Link down\n", netdev->name);
230 }
231 adapter->link_up = link_up;
232 }
233 }
234
235 /* Update the EQ delay n BE based on the RX frags consumed / sec */
236 static void be_rx_eqd_update(struct be_adapter *adapter)
237 {
238 struct be_eq_obj *rx_eq = &adapter->rx_eq;
239 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
240 ulong now = jiffies;
241 u32 eqd;
242
243 if (!rx_eq->enable_aic)
244 return;
245
246 /* Wrapped around */
247 if (time_before(now, stats->rx_fps_jiffies)) {
248 stats->rx_fps_jiffies = now;
249 return;
250 }
251
252 /* Update once a second */
253 if ((now - stats->rx_fps_jiffies) < HZ)
254 return;
255
256 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
257 ((now - stats->rx_fps_jiffies) / HZ);
258
259 stats->rx_fps_jiffies = now;
260 stats->be_prev_rx_frags = stats->be_rx_frags;
261 eqd = stats->be_rx_fps / 110000;
262 eqd = eqd << 3;
263 if (eqd > rx_eq->max_eqd)
264 eqd = rx_eq->max_eqd;
265 if (eqd < rx_eq->min_eqd)
266 eqd = rx_eq->min_eqd;
267 if (eqd < 10)
268 eqd = 0;
269 if (eqd != rx_eq->cur_eqd)
270 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
271
272 rx_eq->cur_eqd = eqd;
273 }
274
275 static struct net_device_stats *be_get_stats(struct net_device *dev)
276 {
277 struct be_adapter *adapter = netdev_priv(dev);
278
279 return &adapter->stats.net_stats;
280 }
281
282 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
283 {
284 u64 rate = bytes;
285
286 do_div(rate, ticks / HZ);
287 rate <<= 3; /* bytes/sec -> bits/sec */
288 do_div(rate, 1000000ul); /* MB/Sec */
289
290 return rate;
291 }
292
293 static void be_tx_rate_update(struct be_adapter *adapter)
294 {
295 struct be_drvr_stats *stats = drvr_stats(adapter);
296 ulong now = jiffies;
297
298 /* Wrapped around? */
299 if (time_before(now, stats->be_tx_jiffies)) {
300 stats->be_tx_jiffies = now;
301 return;
302 }
303
304 /* Update tx rate once in two seconds */
305 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
306 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
307 - stats->be_tx_bytes_prev,
308 now - stats->be_tx_jiffies);
309 stats->be_tx_jiffies = now;
310 stats->be_tx_bytes_prev = stats->be_tx_bytes;
311 }
312 }
313
314 static void be_tx_stats_update(struct be_adapter *adapter,
315 u32 wrb_cnt, u32 copied, bool stopped)
316 {
317 struct be_drvr_stats *stats = drvr_stats(adapter);
318 stats->be_tx_reqs++;
319 stats->be_tx_wrbs += wrb_cnt;
320 stats->be_tx_bytes += copied;
321 if (stopped)
322 stats->be_tx_stops++;
323 }
324
325 /* Determine number of WRB entries needed to xmit data in an skb */
326 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
327 {
328 int cnt = (skb->len > skb->data_len);
329
330 cnt += skb_shinfo(skb)->nr_frags;
331
332 /* to account for hdr wrb */
333 cnt++;
334 if (cnt & 1) {
335 /* add a dummy to make it an even num */
336 cnt++;
337 *dummy = true;
338 } else
339 *dummy = false;
340 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
341 return cnt;
342 }
343
344 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
345 {
346 wrb->frag_pa_hi = upper_32_bits(addr);
347 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
348 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
349 }
350
351 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
352 bool vlan, u32 wrb_cnt, u32 len)
353 {
354 memset(hdr, 0, sizeof(*hdr));
355
356 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
357
358 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
360 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
361 hdr, skb_shinfo(skb)->gso_size);
362 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
363 if (is_tcp_pkt(skb))
364 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
365 else if (is_udp_pkt(skb))
366 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
367 }
368
369 if (vlan && vlan_tx_tag_present(skb)) {
370 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
372 hdr, vlan_tx_tag_get(skb));
373 }
374
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
376 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
377 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
378 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
379 }
380
381
382 static int make_tx_wrbs(struct be_adapter *adapter,
383 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
384 {
385 u64 busaddr;
386 u32 i, copied = 0;
387 struct pci_dev *pdev = adapter->pdev;
388 struct sk_buff *first_skb = skb;
389 struct be_queue_info *txq = &adapter->tx_obj.q;
390 struct be_eth_wrb *wrb;
391 struct be_eth_hdr_wrb *hdr;
392
393 atomic_add(wrb_cnt, &txq->used);
394 hdr = queue_head_node(txq);
395 queue_head_inc(txq);
396
397 if (skb->len > skb->data_len) {
398 int len = skb->len - skb->data_len;
399 busaddr = pci_map_single(pdev, skb->data, len,
400 PCI_DMA_TODEVICE);
401 wrb = queue_head_node(txq);
402 wrb_fill(wrb, busaddr, len);
403 be_dws_cpu_to_le(wrb, sizeof(*wrb));
404 queue_head_inc(txq);
405 copied += len;
406 }
407
408 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
409 struct skb_frag_struct *frag =
410 &skb_shinfo(skb)->frags[i];
411 busaddr = pci_map_page(pdev, frag->page,
412 frag->page_offset,
413 frag->size, PCI_DMA_TODEVICE);
414 wrb = queue_head_node(txq);
415 wrb_fill(wrb, busaddr, frag->size);
416 be_dws_cpu_to_le(wrb, sizeof(*wrb));
417 queue_head_inc(txq);
418 copied += frag->size;
419 }
420
421 if (dummy_wrb) {
422 wrb = queue_head_node(txq);
423 wrb_fill(wrb, 0, 0);
424 be_dws_cpu_to_le(wrb, sizeof(*wrb));
425 queue_head_inc(txq);
426 }
427
428 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
429 wrb_cnt, copied);
430 be_dws_cpu_to_le(hdr, sizeof(*hdr));
431
432 return copied;
433 }
434
435 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
436 {
437 struct be_adapter *adapter = netdev_priv(netdev);
438 struct be_tx_obj *tx_obj = &adapter->tx_obj;
439 struct be_queue_info *txq = &tx_obj->q;
440 u32 wrb_cnt = 0, copied = 0;
441 u32 start = txq->head;
442 bool dummy_wrb, stopped = false;
443
444 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
445
446 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
447
448 /* record the sent skb in the sent_skb table */
449 BUG_ON(tx_obj->sent_skb_list[start]);
450 tx_obj->sent_skb_list[start] = skb;
451
452 /* Ensure that txq has space for the next skb; Else stop the queue
453 * *BEFORE* ringing the tx doorbell, so that we serialze the
454 * tx compls of the current transmit which'll wake up the queue
455 */
456 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
457 netif_stop_queue(netdev);
458 stopped = true;
459 }
460
461 be_txq_notify(adapter, txq->id, wrb_cnt);
462
463 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
464 return NETDEV_TX_OK;
465 }
466
467 static int be_change_mtu(struct net_device *netdev, int new_mtu)
468 {
469 struct be_adapter *adapter = netdev_priv(netdev);
470 if (new_mtu < BE_MIN_MTU ||
471 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
472 dev_info(&adapter->pdev->dev,
473 "MTU must be between %d and %d bytes\n",
474 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
475 return -EINVAL;
476 }
477 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
478 netdev->mtu, new_mtu);
479 netdev->mtu = new_mtu;
480 return 0;
481 }
482
483 /*
484 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
485 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
486 * set the BE in promiscuous VLAN mode.
487 */
488 static void be_vid_config(struct net_device *netdev)
489 {
490 struct be_adapter *adapter = netdev_priv(netdev);
491 u16 vtag[BE_NUM_VLANS_SUPPORTED];
492 u16 ntags = 0, i;
493
494 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
495 /* Construct VLAN Table to give to HW */
496 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
497 if (adapter->vlan_tag[i]) {
498 vtag[ntags] = cpu_to_le16(i);
499 ntags++;
500 }
501 }
502 be_cmd_vlan_config(adapter, adapter->if_handle,
503 vtag, ntags, 1, 0);
504 } else {
505 be_cmd_vlan_config(adapter, adapter->if_handle,
506 NULL, 0, 1, 1);
507 }
508 }
509
510 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
511 {
512 struct be_adapter *adapter = netdev_priv(netdev);
513 struct be_eq_obj *rx_eq = &adapter->rx_eq;
514 struct be_eq_obj *tx_eq = &adapter->tx_eq;
515
516 be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
517 be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
518 adapter->vlan_grp = grp;
519 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
520 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
521 }
522
523 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
524 {
525 struct be_adapter *adapter = netdev_priv(netdev);
526
527 adapter->num_vlans++;
528 adapter->vlan_tag[vid] = 1;
529
530 be_vid_config(netdev);
531 }
532
533 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
534 {
535 struct be_adapter *adapter = netdev_priv(netdev);
536
537 adapter->num_vlans--;
538 adapter->vlan_tag[vid] = 0;
539
540 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
541 be_vid_config(netdev);
542 }
543
544 static void be_set_multicast_list(struct net_device *netdev)
545 {
546 struct be_adapter *adapter = netdev_priv(netdev);
547
548 if (netdev->flags & IFF_PROMISC) {
549 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
550 adapter->promiscuous = true;
551 goto done;
552 }
553
554 /* BE was previously in promiscous mode; disable it */
555 if (adapter->promiscuous) {
556 adapter->promiscuous = false;
557 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
558 }
559
560 if (netdev->flags & IFF_ALLMULTI) {
561 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
562 goto done;
563 }
564
565 be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
566 netdev->mc_count);
567 done:
568 return;
569 }
570
571 static void be_rx_rate_update(struct be_adapter *adapter)
572 {
573 struct be_drvr_stats *stats = drvr_stats(adapter);
574 ulong now = jiffies;
575
576 /* Wrapped around */
577 if (time_before(now, stats->be_rx_jiffies)) {
578 stats->be_rx_jiffies = now;
579 return;
580 }
581
582 /* Update the rate once in two seconds */
583 if ((now - stats->be_rx_jiffies) < 2 * HZ)
584 return;
585
586 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
587 - stats->be_rx_bytes_prev,
588 now - stats->be_rx_jiffies);
589 stats->be_rx_jiffies = now;
590 stats->be_rx_bytes_prev = stats->be_rx_bytes;
591 }
592
593 static void be_rx_stats_update(struct be_adapter *adapter,
594 u32 pktsize, u16 numfrags)
595 {
596 struct be_drvr_stats *stats = drvr_stats(adapter);
597
598 stats->be_rx_compl++;
599 stats->be_rx_frags += numfrags;
600 stats->be_rx_bytes += pktsize;
601 }
602
603 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
604 {
605 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
606
607 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
608 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
609 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
610 if (ip_version) {
611 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
612 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
613 }
614 ipv6_chk = (ip_version && (tcpf || udpf));
615
616 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
617 }
618
619 static struct be_rx_page_info *
620 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
621 {
622 struct be_rx_page_info *rx_page_info;
623 struct be_queue_info *rxq = &adapter->rx_obj.q;
624
625 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
626 BUG_ON(!rx_page_info->page);
627
628 if (rx_page_info->last_page_user)
629 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
630 adapter->big_page_size, PCI_DMA_FROMDEVICE);
631
632 atomic_dec(&rxq->used);
633 return rx_page_info;
634 }
635
636 /* Throwaway the data in the Rx completion */
637 static void be_rx_compl_discard(struct be_adapter *adapter,
638 struct be_eth_rx_compl *rxcp)
639 {
640 struct be_queue_info *rxq = &adapter->rx_obj.q;
641 struct be_rx_page_info *page_info;
642 u16 rxq_idx, i, num_rcvd;
643
644 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
645 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
646
647 for (i = 0; i < num_rcvd; i++) {
648 page_info = get_rx_page_info(adapter, rxq_idx);
649 put_page(page_info->page);
650 memset(page_info, 0, sizeof(*page_info));
651 index_inc(&rxq_idx, rxq->len);
652 }
653 }
654
655 /*
656 * skb_fill_rx_data forms a complete skb for an ether frame
657 * indicated by rxcp.
658 */
659 static void skb_fill_rx_data(struct be_adapter *adapter,
660 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
661 {
662 struct be_queue_info *rxq = &adapter->rx_obj.q;
663 struct be_rx_page_info *page_info;
664 u16 rxq_idx, i, num_rcvd, j;
665 u32 pktsize, hdr_len, curr_frag_len, size;
666 u8 *start;
667
668 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
669 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
670 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
671
672 page_info = get_rx_page_info(adapter, rxq_idx);
673
674 start = page_address(page_info->page) + page_info->page_offset;
675 prefetch(start);
676
677 /* Copy data in the first descriptor of this completion */
678 curr_frag_len = min(pktsize, rx_frag_size);
679
680 /* Copy the header portion into skb_data */
681 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
682 memcpy(skb->data, start, hdr_len);
683 skb->len = curr_frag_len;
684 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
685 /* Complete packet has now been moved to data */
686 put_page(page_info->page);
687 skb->data_len = 0;
688 skb->tail += curr_frag_len;
689 } else {
690 skb_shinfo(skb)->nr_frags = 1;
691 skb_shinfo(skb)->frags[0].page = page_info->page;
692 skb_shinfo(skb)->frags[0].page_offset =
693 page_info->page_offset + hdr_len;
694 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
695 skb->data_len = curr_frag_len - hdr_len;
696 skb->tail += hdr_len;
697 }
698 memset(page_info, 0, sizeof(*page_info));
699
700 if (pktsize <= rx_frag_size) {
701 BUG_ON(num_rcvd != 1);
702 goto done;
703 }
704
705 /* More frags present for this completion */
706 size = pktsize;
707 for (i = 1, j = 0; i < num_rcvd; i++) {
708 size -= curr_frag_len;
709 index_inc(&rxq_idx, rxq->len);
710 page_info = get_rx_page_info(adapter, rxq_idx);
711
712 curr_frag_len = min(size, rx_frag_size);
713
714 /* Coalesce all frags from the same physical page in one slot */
715 if (page_info->page_offset == 0) {
716 /* Fresh page */
717 j++;
718 skb_shinfo(skb)->frags[j].page = page_info->page;
719 skb_shinfo(skb)->frags[j].page_offset =
720 page_info->page_offset;
721 skb_shinfo(skb)->frags[j].size = 0;
722 skb_shinfo(skb)->nr_frags++;
723 } else {
724 put_page(page_info->page);
725 }
726
727 skb_shinfo(skb)->frags[j].size += curr_frag_len;
728 skb->len += curr_frag_len;
729 skb->data_len += curr_frag_len;
730
731 memset(page_info, 0, sizeof(*page_info));
732 }
733 BUG_ON(j > MAX_SKB_FRAGS);
734
735 done:
736 be_rx_stats_update(adapter, pktsize, num_rcvd);
737 return;
738 }
739
740 /* Process the RX completion indicated by rxcp when GRO is disabled */
741 static void be_rx_compl_process(struct be_adapter *adapter,
742 struct be_eth_rx_compl *rxcp)
743 {
744 struct sk_buff *skb;
745 u32 vtp, vid;
746
747 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
748
749 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
750 if (!skb) {
751 if (net_ratelimit())
752 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
753 be_rx_compl_discard(adapter, rxcp);
754 return;
755 }
756
757 skb_reserve(skb, NET_IP_ALIGN);
758
759 skb_fill_rx_data(adapter, skb, rxcp);
760
761 if (do_pkt_csum(rxcp, adapter->rx_csum))
762 skb->ip_summed = CHECKSUM_NONE;
763 else
764 skb->ip_summed = CHECKSUM_UNNECESSARY;
765
766 skb->truesize = skb->len + sizeof(struct sk_buff);
767 skb->protocol = eth_type_trans(skb, adapter->netdev);
768 skb->dev = adapter->netdev;
769
770 if (vtp) {
771 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
772 kfree_skb(skb);
773 return;
774 }
775 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
776 vid = be16_to_cpu(vid);
777 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
778 } else {
779 netif_receive_skb(skb);
780 }
781
782 adapter->netdev->last_rx = jiffies;
783
784 return;
785 }
786
787 /* Process the RX completion indicated by rxcp when GRO is enabled */
788 static void be_rx_compl_process_gro(struct be_adapter *adapter,
789 struct be_eth_rx_compl *rxcp)
790 {
791 struct be_rx_page_info *page_info;
792 struct sk_buff *skb = NULL;
793 struct be_queue_info *rxq = &adapter->rx_obj.q;
794 struct be_eq_obj *eq_obj = &adapter->rx_eq;
795 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
796 u16 i, rxq_idx = 0, vid, j;
797
798 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
799 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
800 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
801 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
802
803 skb = napi_get_frags(&eq_obj->napi);
804 if (!skb) {
805 be_rx_compl_discard(adapter, rxcp);
806 return;
807 }
808
809 remaining = pkt_size;
810 for (i = 0, j = -1; i < num_rcvd; i++) {
811 page_info = get_rx_page_info(adapter, rxq_idx);
812
813 curr_frag_len = min(remaining, rx_frag_size);
814
815 /* Coalesce all frags from the same physical page in one slot */
816 if (i == 0 || page_info->page_offset == 0) {
817 /* First frag or Fresh page */
818 j++;
819 skb_shinfo(skb)->frags[j].page = page_info->page;
820 skb_shinfo(skb)->frags[j].page_offset =
821 page_info->page_offset;
822 skb_shinfo(skb)->frags[j].size = 0;
823 } else {
824 put_page(page_info->page);
825 }
826 skb_shinfo(skb)->frags[j].size += curr_frag_len;
827
828 remaining -= curr_frag_len;
829 index_inc(&rxq_idx, rxq->len);
830 memset(page_info, 0, sizeof(*page_info));
831 }
832 BUG_ON(j > MAX_SKB_FRAGS);
833
834 skb_shinfo(skb)->nr_frags = j + 1;
835 skb->len = pkt_size;
836 skb->data_len = pkt_size;
837 skb->truesize += pkt_size;
838 skb->ip_summed = CHECKSUM_UNNECESSARY;
839
840 if (likely(!vlanf)) {
841 napi_gro_frags(&eq_obj->napi);
842 } else {
843 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
844 vid = be16_to_cpu(vid);
845
846 if (!adapter->vlan_grp || adapter->num_vlans == 0)
847 return;
848
849 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
850 }
851
852 be_rx_stats_update(adapter, pkt_size, num_rcvd);
853 return;
854 }
855
856 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
857 {
858 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
859
860 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
861 return NULL;
862
863 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
864
865 queue_tail_inc(&adapter->rx_obj.cq);
866 return rxcp;
867 }
868
869 /* To reset the valid bit, we need to reset the whole word as
870 * when walking the queue the valid entries are little-endian
871 * and invalid entries are host endian
872 */
873 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
874 {
875 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
876 }
877
878 static inline struct page *be_alloc_pages(u32 size)
879 {
880 gfp_t alloc_flags = GFP_ATOMIC;
881 u32 order = get_order(size);
882 if (order > 0)
883 alloc_flags |= __GFP_COMP;
884 return alloc_pages(alloc_flags, order);
885 }
886
887 /*
888 * Allocate a page, split it to fragments of size rx_frag_size and post as
889 * receive buffers to BE
890 */
891 static void be_post_rx_frags(struct be_adapter *adapter)
892 {
893 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
894 struct be_rx_page_info *page_info = NULL;
895 struct be_queue_info *rxq = &adapter->rx_obj.q;
896 struct page *pagep = NULL;
897 struct be_eth_rx_d *rxd;
898 u64 page_dmaaddr = 0, frag_dmaaddr;
899 u32 posted, page_offset = 0;
900
901 page_info = &page_info_tbl[rxq->head];
902 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
903 if (!pagep) {
904 pagep = be_alloc_pages(adapter->big_page_size);
905 if (unlikely(!pagep)) {
906 drvr_stats(adapter)->be_ethrx_post_fail++;
907 break;
908 }
909 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
910 adapter->big_page_size,
911 PCI_DMA_FROMDEVICE);
912 page_info->page_offset = 0;
913 } else {
914 get_page(pagep);
915 page_info->page_offset = page_offset + rx_frag_size;
916 }
917 page_offset = page_info->page_offset;
918 page_info->page = pagep;
919 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
920 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
921
922 rxd = queue_head_node(rxq);
923 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
924 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
925 queue_head_inc(rxq);
926
927 /* Any space left in the current big page for another frag? */
928 if ((page_offset + rx_frag_size + rx_frag_size) >
929 adapter->big_page_size) {
930 pagep = NULL;
931 page_info->last_page_user = true;
932 }
933 page_info = &page_info_tbl[rxq->head];
934 }
935 if (pagep)
936 page_info->last_page_user = true;
937
938 if (posted) {
939 atomic_add(posted, &rxq->used);
940 be_rxq_notify(adapter, rxq->id, posted);
941 } else if (atomic_read(&rxq->used) == 0) {
942 /* Let be_worker replenish when memory is available */
943 adapter->rx_post_starved = true;
944 }
945
946 return;
947 }
948
949 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
950 {
951 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
952
953 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
954 return NULL;
955
956 be_dws_le_to_cpu(txcp, sizeof(*txcp));
957
958 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
959
960 queue_tail_inc(tx_cq);
961 return txcp;
962 }
963
964 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
965 {
966 struct be_queue_info *txq = &adapter->tx_obj.q;
967 struct be_eth_wrb *wrb;
968 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
969 struct sk_buff *sent_skb;
970 u64 busaddr;
971 u16 cur_index, num_wrbs = 0;
972
973 cur_index = txq->tail;
974 sent_skb = sent_skbs[cur_index];
975 BUG_ON(!sent_skb);
976 sent_skbs[cur_index] = NULL;
977
978 do {
979 cur_index = txq->tail;
980 wrb = queue_tail_node(txq);
981 be_dws_le_to_cpu(wrb, sizeof(*wrb));
982 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
983 if (busaddr != 0) {
984 pci_unmap_single(adapter->pdev, busaddr,
985 wrb->frag_len, PCI_DMA_TODEVICE);
986 }
987 num_wrbs++;
988 queue_tail_inc(txq);
989 } while (cur_index != last_index);
990
991 atomic_sub(num_wrbs, &txq->used);
992
993 kfree_skb(sent_skb);
994 }
995
996 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
997 {
998 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
999
1000 if (!eqe->evt)
1001 return NULL;
1002
1003 eqe->evt = le32_to_cpu(eqe->evt);
1004 queue_tail_inc(&eq_obj->q);
1005 return eqe;
1006 }
1007
1008 static int event_handle(struct be_adapter *adapter,
1009 struct be_eq_obj *eq_obj)
1010 {
1011 struct be_eq_entry *eqe;
1012 u16 num = 0;
1013
1014 while ((eqe = event_get(eq_obj)) != NULL) {
1015 eqe->evt = 0;
1016 num++;
1017 }
1018
1019 /* Deal with any spurious interrupts that come
1020 * without events
1021 */
1022 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1023 if (num)
1024 napi_schedule(&eq_obj->napi);
1025
1026 return num;
1027 }
1028
1029 /* Just read and notify events without processing them.
1030 * Used at the time of destroying event queues */
1031 static void be_eq_clean(struct be_adapter *adapter,
1032 struct be_eq_obj *eq_obj)
1033 {
1034 struct be_eq_entry *eqe;
1035 u16 num = 0;
1036
1037 while ((eqe = event_get(eq_obj)) != NULL) {
1038 eqe->evt = 0;
1039 num++;
1040 }
1041
1042 if (num)
1043 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1044 }
1045
1046 static void be_rx_q_clean(struct be_adapter *adapter)
1047 {
1048 struct be_rx_page_info *page_info;
1049 struct be_queue_info *rxq = &adapter->rx_obj.q;
1050 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1051 struct be_eth_rx_compl *rxcp;
1052 u16 tail;
1053
1054 /* First cleanup pending rx completions */
1055 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1056 be_rx_compl_discard(adapter, rxcp);
1057 be_rx_compl_reset(rxcp);
1058 be_cq_notify(adapter, rx_cq->id, true, 1);
1059 }
1060
1061 /* Then free posted rx buffer that were not used */
1062 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1063 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1064 page_info = get_rx_page_info(adapter, tail);
1065 put_page(page_info->page);
1066 memset(page_info, 0, sizeof(*page_info));
1067 }
1068 BUG_ON(atomic_read(&rxq->used));
1069 }
1070
1071 static void be_tx_compl_clean(struct be_adapter *adapter)
1072 {
1073 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1074 struct be_queue_info *txq = &adapter->tx_obj.q;
1075 struct be_eth_tx_compl *txcp;
1076 u16 end_idx, cmpl = 0, timeo = 0;
1077
1078 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1079 do {
1080 while ((txcp = be_tx_compl_get(tx_cq))) {
1081 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1082 wrb_index, txcp);
1083 be_tx_compl_process(adapter, end_idx);
1084 cmpl++;
1085 }
1086 if (cmpl) {
1087 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1088 cmpl = 0;
1089 }
1090
1091 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1092 break;
1093
1094 mdelay(1);
1095 } while (true);
1096
1097 if (atomic_read(&txq->used))
1098 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1099 atomic_read(&txq->used));
1100 }
1101
1102 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1103 {
1104 struct be_queue_info *q;
1105
1106 q = &adapter->mcc_obj.q;
1107 if (q->created)
1108 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1109 be_queue_free(adapter, q);
1110
1111 q = &adapter->mcc_obj.cq;
1112 if (q->created)
1113 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1114 be_queue_free(adapter, q);
1115 }
1116
1117 /* Must be called only after TX qs are created as MCC shares TX EQ */
1118 static int be_mcc_queues_create(struct be_adapter *adapter)
1119 {
1120 struct be_queue_info *q, *cq;
1121
1122 /* Alloc MCC compl queue */
1123 cq = &adapter->mcc_obj.cq;
1124 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1125 sizeof(struct be_mcc_compl)))
1126 goto err;
1127
1128 /* Ask BE to create MCC compl queue; share TX's eq */
1129 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1130 goto mcc_cq_free;
1131
1132 /* Alloc MCC queue */
1133 q = &adapter->mcc_obj.q;
1134 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1135 goto mcc_cq_destroy;
1136
1137 /* Ask BE to create MCC queue */
1138 if (be_cmd_mccq_create(adapter, q, cq))
1139 goto mcc_q_free;
1140
1141 return 0;
1142
1143 mcc_q_free:
1144 be_queue_free(adapter, q);
1145 mcc_cq_destroy:
1146 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1147 mcc_cq_free:
1148 be_queue_free(adapter, cq);
1149 err:
1150 return -1;
1151 }
1152
1153 static void be_tx_queues_destroy(struct be_adapter *adapter)
1154 {
1155 struct be_queue_info *q;
1156
1157 q = &adapter->tx_obj.q;
1158 if (q->created)
1159 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1160 be_queue_free(adapter, q);
1161
1162 q = &adapter->tx_obj.cq;
1163 if (q->created)
1164 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1165 be_queue_free(adapter, q);
1166
1167 /* Clear any residual events */
1168 be_eq_clean(adapter, &adapter->tx_eq);
1169
1170 q = &adapter->tx_eq.q;
1171 if (q->created)
1172 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1173 be_queue_free(adapter, q);
1174 }
1175
1176 static int be_tx_queues_create(struct be_adapter *adapter)
1177 {
1178 struct be_queue_info *eq, *q, *cq;
1179
1180 adapter->tx_eq.max_eqd = 0;
1181 adapter->tx_eq.min_eqd = 0;
1182 adapter->tx_eq.cur_eqd = 96;
1183 adapter->tx_eq.enable_aic = false;
1184 /* Alloc Tx Event queue */
1185 eq = &adapter->tx_eq.q;
1186 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1187 return -1;
1188
1189 /* Ask BE to create Tx Event queue */
1190 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1191 goto tx_eq_free;
1192 /* Alloc TX eth compl queue */
1193 cq = &adapter->tx_obj.cq;
1194 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1195 sizeof(struct be_eth_tx_compl)))
1196 goto tx_eq_destroy;
1197
1198 /* Ask BE to create Tx eth compl queue */
1199 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1200 goto tx_cq_free;
1201
1202 /* Alloc TX eth queue */
1203 q = &adapter->tx_obj.q;
1204 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1205 goto tx_cq_destroy;
1206
1207 /* Ask BE to create Tx eth queue */
1208 if (be_cmd_txq_create(adapter, q, cq))
1209 goto tx_q_free;
1210 return 0;
1211
1212 tx_q_free:
1213 be_queue_free(adapter, q);
1214 tx_cq_destroy:
1215 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1216 tx_cq_free:
1217 be_queue_free(adapter, cq);
1218 tx_eq_destroy:
1219 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1220 tx_eq_free:
1221 be_queue_free(adapter, eq);
1222 return -1;
1223 }
1224
1225 static void be_rx_queues_destroy(struct be_adapter *adapter)
1226 {
1227 struct be_queue_info *q;
1228
1229 q = &adapter->rx_obj.q;
1230 if (q->created) {
1231 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1232 be_rx_q_clean(adapter);
1233 }
1234 be_queue_free(adapter, q);
1235
1236 q = &adapter->rx_obj.cq;
1237 if (q->created)
1238 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1239 be_queue_free(adapter, q);
1240
1241 /* Clear any residual events */
1242 be_eq_clean(adapter, &adapter->rx_eq);
1243
1244 q = &adapter->rx_eq.q;
1245 if (q->created)
1246 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1247 be_queue_free(adapter, q);
1248 }
1249
1250 static int be_rx_queues_create(struct be_adapter *adapter)
1251 {
1252 struct be_queue_info *eq, *q, *cq;
1253 int rc;
1254
1255 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1256 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1257 adapter->rx_eq.min_eqd = 0;
1258 adapter->rx_eq.cur_eqd = 0;
1259 adapter->rx_eq.enable_aic = true;
1260
1261 /* Alloc Rx Event queue */
1262 eq = &adapter->rx_eq.q;
1263 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1264 sizeof(struct be_eq_entry));
1265 if (rc)
1266 return rc;
1267
1268 /* Ask BE to create Rx Event queue */
1269 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1270 if (rc)
1271 goto rx_eq_free;
1272
1273 /* Alloc RX eth compl queue */
1274 cq = &adapter->rx_obj.cq;
1275 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1276 sizeof(struct be_eth_rx_compl));
1277 if (rc)
1278 goto rx_eq_destroy;
1279
1280 /* Ask BE to create Rx eth compl queue */
1281 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1282 if (rc)
1283 goto rx_cq_free;
1284
1285 /* Alloc RX eth queue */
1286 q = &adapter->rx_obj.q;
1287 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1288 if (rc)
1289 goto rx_cq_destroy;
1290
1291 /* Ask BE to create Rx eth queue */
1292 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1293 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1294 if (rc)
1295 goto rx_q_free;
1296
1297 return 0;
1298 rx_q_free:
1299 be_queue_free(adapter, q);
1300 rx_cq_destroy:
1301 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1302 rx_cq_free:
1303 be_queue_free(adapter, cq);
1304 rx_eq_destroy:
1305 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1306 rx_eq_free:
1307 be_queue_free(adapter, eq);
1308 return rc;
1309 }
1310
1311 static irqreturn_t be_intx(int irq, void *dev)
1312 {
1313 struct be_adapter *adapter = dev;
1314 int isr;
1315
1316 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1317 be_pci_func(adapter) * CEV_ISR_SIZE);
1318 if (!isr)
1319 return IRQ_NONE;
1320
1321 event_handle(adapter, &adapter->tx_eq);
1322 event_handle(adapter, &adapter->rx_eq);
1323
1324 return IRQ_HANDLED;
1325 }
1326
1327 static irqreturn_t be_msix_rx(int irq, void *dev)
1328 {
1329 struct be_adapter *adapter = dev;
1330
1331 event_handle(adapter, &adapter->rx_eq);
1332
1333 return IRQ_HANDLED;
1334 }
1335
1336 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1337 {
1338 struct be_adapter *adapter = dev;
1339
1340 event_handle(adapter, &adapter->tx_eq);
1341
1342 return IRQ_HANDLED;
1343 }
1344
1345 static inline bool do_gro(struct be_adapter *adapter,
1346 struct be_eth_rx_compl *rxcp)
1347 {
1348 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1349 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1350
1351 if (err)
1352 drvr_stats(adapter)->be_rxcp_err++;
1353
1354 return (tcp_frame && !err) ? true : false;
1355 }
1356
1357 int be_poll_rx(struct napi_struct *napi, int budget)
1358 {
1359 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1360 struct be_adapter *adapter =
1361 container_of(rx_eq, struct be_adapter, rx_eq);
1362 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1363 struct be_eth_rx_compl *rxcp;
1364 u32 work_done;
1365
1366 for (work_done = 0; work_done < budget; work_done++) {
1367 rxcp = be_rx_compl_get(adapter);
1368 if (!rxcp)
1369 break;
1370
1371 if (do_gro(adapter, rxcp))
1372 be_rx_compl_process_gro(adapter, rxcp);
1373 else
1374 be_rx_compl_process(adapter, rxcp);
1375
1376 be_rx_compl_reset(rxcp);
1377 }
1378
1379 /* Refill the queue */
1380 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1381 be_post_rx_frags(adapter);
1382
1383 /* All consumed */
1384 if (work_done < budget) {
1385 napi_complete(napi);
1386 be_cq_notify(adapter, rx_cq->id, true, work_done);
1387 } else {
1388 /* More to be consumed; continue with interrupts disabled */
1389 be_cq_notify(adapter, rx_cq->id, false, work_done);
1390 }
1391 return work_done;
1392 }
1393
1394 void be_process_tx(struct be_adapter *adapter)
1395 {
1396 struct be_queue_info *txq = &adapter->tx_obj.q;
1397 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1398 struct be_eth_tx_compl *txcp;
1399 u32 num_cmpl = 0;
1400 u16 end_idx;
1401
1402 while ((txcp = be_tx_compl_get(tx_cq))) {
1403 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1404 wrb_index, txcp);
1405 be_tx_compl_process(adapter, end_idx);
1406 num_cmpl++;
1407 }
1408
1409 if (num_cmpl) {
1410 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1411
1412 /* As Tx wrbs have been freed up, wake up netdev queue if
1413 * it was stopped due to lack of tx wrbs.
1414 */
1415 if (netif_queue_stopped(adapter->netdev) &&
1416 atomic_read(&txq->used) < txq->len / 2) {
1417 netif_wake_queue(adapter->netdev);
1418 }
1419
1420 drvr_stats(adapter)->be_tx_events++;
1421 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1422 }
1423 }
1424
1425 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1426 * For TX/MCC we don't honour budget; consume everything
1427 */
1428 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1429 {
1430 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1431 struct be_adapter *adapter =
1432 container_of(tx_eq, struct be_adapter, tx_eq);
1433
1434 napi_complete(napi);
1435
1436 be_process_tx(adapter);
1437
1438 be_process_mcc(adapter);
1439
1440 return 1;
1441 }
1442
1443 static void be_worker(struct work_struct *work)
1444 {
1445 struct be_adapter *adapter =
1446 container_of(work, struct be_adapter, work.work);
1447 int status;
1448
1449 /* Get Stats */
1450 status = be_cmd_get_stats(adapter, &adapter->stats.cmd);
1451 if (!status)
1452 netdev_stats_update(adapter);
1453
1454 /* Set EQ delay */
1455 be_rx_eqd_update(adapter);
1456
1457 be_tx_rate_update(adapter);
1458 be_rx_rate_update(adapter);
1459
1460 if (adapter->rx_post_starved) {
1461 adapter->rx_post_starved = false;
1462 be_post_rx_frags(adapter);
1463 }
1464
1465 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1466 }
1467
1468 static void be_msix_enable(struct be_adapter *adapter)
1469 {
1470 int i, status;
1471
1472 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1473 adapter->msix_entries[i].entry = i;
1474
1475 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1476 BE_NUM_MSIX_VECTORS);
1477 if (status == 0)
1478 adapter->msix_enabled = true;
1479 return;
1480 }
1481
1482 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1483 {
1484 return adapter->msix_entries[eq_id - 8 * be_pci_func(adapter)].vector;
1485 }
1486
1487 static int be_msix_register(struct be_adapter *adapter)
1488 {
1489 struct net_device *netdev = adapter->netdev;
1490 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1491 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1492 int status, vec;
1493
1494 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1495 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1496 status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter);
1497 if (status)
1498 goto err;
1499
1500 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1501 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1502 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1503 if (status) { /* Free TX IRQ */
1504 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1505 free_irq(vec, adapter);
1506 goto err;
1507 }
1508 return 0;
1509 err:
1510 dev_warn(&adapter->pdev->dev,
1511 "MSIX Request IRQ failed - err %d\n", status);
1512 pci_disable_msix(adapter->pdev);
1513 adapter->msix_enabled = false;
1514 return status;
1515 }
1516
1517 static int be_irq_register(struct be_adapter *adapter)
1518 {
1519 struct net_device *netdev = adapter->netdev;
1520 int status;
1521
1522 if (adapter->msix_enabled) {
1523 status = be_msix_register(adapter);
1524 if (status == 0)
1525 goto done;
1526 }
1527
1528 /* INTx */
1529 netdev->irq = adapter->pdev->irq;
1530 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1531 adapter);
1532 if (status) {
1533 dev_err(&adapter->pdev->dev,
1534 "INTx request IRQ failed - err %d\n", status);
1535 return status;
1536 }
1537 done:
1538 adapter->isr_registered = true;
1539 return 0;
1540 }
1541
1542 static void be_irq_unregister(struct be_adapter *adapter)
1543 {
1544 struct net_device *netdev = adapter->netdev;
1545 int vec;
1546
1547 if (!adapter->isr_registered)
1548 return;
1549
1550 /* INTx */
1551 if (!adapter->msix_enabled) {
1552 free_irq(netdev->irq, adapter);
1553 goto done;
1554 }
1555
1556 /* MSIx */
1557 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1558 free_irq(vec, adapter);
1559 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1560 free_irq(vec, adapter);
1561 done:
1562 adapter->isr_registered = false;
1563 return;
1564 }
1565
1566 static int be_open(struct net_device *netdev)
1567 {
1568 struct be_adapter *adapter = netdev_priv(netdev);
1569 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1570 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1571 bool link_up;
1572 int status;
1573
1574 /* First time posting */
1575 be_post_rx_frags(adapter);
1576
1577 napi_enable(&rx_eq->napi);
1578 napi_enable(&tx_eq->napi);
1579
1580 be_irq_register(adapter);
1581
1582 be_intr_set(adapter, true);
1583
1584 /* The evt queues are created in unarmed state; arm them */
1585 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1586 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1587
1588 /* Rx compl queue may be in unarmed state; rearm it */
1589 be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1590
1591 status = be_cmd_link_status_query(adapter, &link_up);
1592 if (status)
1593 return status;
1594 be_link_status_update(adapter, link_up);
1595
1596 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1597 return 0;
1598 }
1599
1600 static int be_setup(struct be_adapter *adapter)
1601 {
1602 struct net_device *netdev = adapter->netdev;
1603 u32 if_flags;
1604 int status;
1605
1606 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1607 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1608 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1609 status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
1610 false/* pmac_invalid */, &adapter->if_handle,
1611 &adapter->pmac_id);
1612 if (status != 0)
1613 goto do_none;
1614
1615 be_vid_config(netdev);
1616
1617 status = be_cmd_set_flow_control(adapter, true, true);
1618 if (status != 0)
1619 goto if_destroy;
1620
1621 status = be_tx_queues_create(adapter);
1622 if (status != 0)
1623 goto if_destroy;
1624
1625 status = be_rx_queues_create(adapter);
1626 if (status != 0)
1627 goto tx_qs_destroy;
1628
1629 status = be_mcc_queues_create(adapter);
1630 if (status != 0)
1631 goto rx_qs_destroy;
1632
1633 return 0;
1634
1635 rx_qs_destroy:
1636 be_rx_queues_destroy(adapter);
1637 tx_qs_destroy:
1638 be_tx_queues_destroy(adapter);
1639 if_destroy:
1640 be_cmd_if_destroy(adapter, adapter->if_handle);
1641 do_none:
1642 return status;
1643 }
1644
1645 static int be_clear(struct be_adapter *adapter)
1646 {
1647 be_rx_queues_destroy(adapter);
1648 be_tx_queues_destroy(adapter);
1649
1650 be_cmd_if_destroy(adapter, adapter->if_handle);
1651
1652 be_mcc_queues_destroy(adapter);
1653 return 0;
1654 }
1655
1656 static int be_close(struct net_device *netdev)
1657 {
1658 struct be_adapter *adapter = netdev_priv(netdev);
1659 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1660 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1661 int vec;
1662
1663 cancel_delayed_work_sync(&adapter->work);
1664
1665 netif_stop_queue(netdev);
1666 netif_carrier_off(netdev);
1667 adapter->link_up = false;
1668
1669 be_intr_set(adapter, false);
1670
1671 if (adapter->msix_enabled) {
1672 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1673 synchronize_irq(vec);
1674 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1675 synchronize_irq(vec);
1676 } else {
1677 synchronize_irq(netdev->irq);
1678 }
1679 be_irq_unregister(adapter);
1680
1681 napi_disable(&rx_eq->napi);
1682 napi_disable(&tx_eq->napi);
1683
1684 /* Wait for all pending tx completions to arrive so that
1685 * all tx skbs are freed.
1686 */
1687 be_tx_compl_clean(adapter);
1688
1689 return 0;
1690 }
1691
1692 static struct net_device_ops be_netdev_ops = {
1693 .ndo_open = be_open,
1694 .ndo_stop = be_close,
1695 .ndo_start_xmit = be_xmit,
1696 .ndo_get_stats = be_get_stats,
1697 .ndo_set_rx_mode = be_set_multicast_list,
1698 .ndo_set_mac_address = be_mac_addr_set,
1699 .ndo_change_mtu = be_change_mtu,
1700 .ndo_validate_addr = eth_validate_addr,
1701 .ndo_vlan_rx_register = be_vlan_register,
1702 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1703 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1704 };
1705
1706 static void be_netdev_init(struct net_device *netdev)
1707 {
1708 struct be_adapter *adapter = netdev_priv(netdev);
1709
1710 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1711 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1712 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
1713
1714 netdev->flags |= IFF_MULTICAST;
1715
1716 adapter->rx_csum = true;
1717
1718 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1719
1720 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1721
1722 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1723 BE_NAPI_WEIGHT);
1724 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1725 BE_NAPI_WEIGHT);
1726
1727 netif_carrier_off(netdev);
1728 netif_stop_queue(netdev);
1729 }
1730
1731 static void be_unmap_pci_bars(struct be_adapter *adapter)
1732 {
1733 if (adapter->csr)
1734 iounmap(adapter->csr);
1735 if (adapter->db)
1736 iounmap(adapter->db);
1737 if (adapter->pcicfg)
1738 iounmap(adapter->pcicfg);
1739 }
1740
1741 static int be_map_pci_bars(struct be_adapter *adapter)
1742 {
1743 u8 __iomem *addr;
1744
1745 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1746 pci_resource_len(adapter->pdev, 2));
1747 if (addr == NULL)
1748 return -ENOMEM;
1749 adapter->csr = addr;
1750
1751 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1752 128 * 1024);
1753 if (addr == NULL)
1754 goto pci_map_err;
1755 adapter->db = addr;
1756
1757 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1758 pci_resource_len(adapter->pdev, 1));
1759 if (addr == NULL)
1760 goto pci_map_err;
1761 adapter->pcicfg = addr;
1762
1763 return 0;
1764 pci_map_err:
1765 be_unmap_pci_bars(adapter);
1766 return -ENOMEM;
1767 }
1768
1769
1770 static void be_ctrl_cleanup(struct be_adapter *adapter)
1771 {
1772 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1773
1774 be_unmap_pci_bars(adapter);
1775
1776 if (mem->va)
1777 pci_free_consistent(adapter->pdev, mem->size,
1778 mem->va, mem->dma);
1779 }
1780
1781 static int be_ctrl_init(struct be_adapter *adapter)
1782 {
1783 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1784 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1785 int status;
1786
1787 status = be_map_pci_bars(adapter);
1788 if (status)
1789 return status;
1790
1791 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1792 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1793 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1794 if (!mbox_mem_alloc->va) {
1795 be_unmap_pci_bars(adapter);
1796 return -1;
1797 }
1798 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1799 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1800 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1801 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1802 spin_lock_init(&adapter->mbox_lock);
1803 spin_lock_init(&adapter->mcc_lock);
1804 spin_lock_init(&adapter->mcc_cq_lock);
1805
1806 return 0;
1807 }
1808
1809 static void be_stats_cleanup(struct be_adapter *adapter)
1810 {
1811 struct be_stats_obj *stats = &adapter->stats;
1812 struct be_dma_mem *cmd = &stats->cmd;
1813
1814 if (cmd->va)
1815 pci_free_consistent(adapter->pdev, cmd->size,
1816 cmd->va, cmd->dma);
1817 }
1818
1819 static int be_stats_init(struct be_adapter *adapter)
1820 {
1821 struct be_stats_obj *stats = &adapter->stats;
1822 struct be_dma_mem *cmd = &stats->cmd;
1823
1824 cmd->size = sizeof(struct be_cmd_req_get_stats);
1825 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1826 if (cmd->va == NULL)
1827 return -1;
1828 return 0;
1829 }
1830
1831 static void __devexit be_remove(struct pci_dev *pdev)
1832 {
1833 struct be_adapter *adapter = pci_get_drvdata(pdev);
1834 if (!adapter)
1835 return;
1836
1837 unregister_netdev(adapter->netdev);
1838
1839 be_clear(adapter);
1840
1841 be_stats_cleanup(adapter);
1842
1843 be_ctrl_cleanup(adapter);
1844
1845 if (adapter->msix_enabled) {
1846 pci_disable_msix(adapter->pdev);
1847 adapter->msix_enabled = false;
1848 }
1849
1850 pci_set_drvdata(pdev, NULL);
1851 pci_release_regions(pdev);
1852 pci_disable_device(pdev);
1853
1854 free_netdev(adapter->netdev);
1855 }
1856
1857 static int be_hw_up(struct be_adapter *adapter)
1858 {
1859 int status;
1860
1861 status = be_cmd_POST(adapter);
1862 if (status)
1863 return status;
1864
1865 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
1866 if (status)
1867 return status;
1868
1869 status = be_cmd_query_fw_cfg(adapter, &adapter->port_num);
1870 return status;
1871 }
1872
1873 static int __devinit be_probe(struct pci_dev *pdev,
1874 const struct pci_device_id *pdev_id)
1875 {
1876 int status = 0;
1877 struct be_adapter *adapter;
1878 struct net_device *netdev;
1879 u8 mac[ETH_ALEN];
1880
1881 status = pci_enable_device(pdev);
1882 if (status)
1883 goto do_none;
1884
1885 status = pci_request_regions(pdev, DRV_NAME);
1886 if (status)
1887 goto disable_dev;
1888 pci_set_master(pdev);
1889
1890 netdev = alloc_etherdev(sizeof(struct be_adapter));
1891 if (netdev == NULL) {
1892 status = -ENOMEM;
1893 goto rel_reg;
1894 }
1895 adapter = netdev_priv(netdev);
1896 adapter->pdev = pdev;
1897 pci_set_drvdata(pdev, adapter);
1898 adapter->netdev = netdev;
1899
1900 be_msix_enable(adapter);
1901
1902 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1903 if (!status) {
1904 netdev->features |= NETIF_F_HIGHDMA;
1905 } else {
1906 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1907 if (status) {
1908 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1909 goto free_netdev;
1910 }
1911 }
1912
1913 status = be_ctrl_init(adapter);
1914 if (status)
1915 goto free_netdev;
1916
1917 status = be_cmd_reset_function(adapter);
1918 if (status)
1919 goto ctrl_clean;
1920
1921 status = be_stats_init(adapter);
1922 if (status)
1923 goto ctrl_clean;
1924
1925 status = be_hw_up(adapter);
1926 if (status)
1927 goto stats_clean;
1928
1929 status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
1930 true /* permanent */, 0);
1931 if (status)
1932 goto stats_clean;
1933 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1934
1935 INIT_DELAYED_WORK(&adapter->work, be_worker);
1936 be_netdev_init(netdev);
1937 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1938
1939 status = be_setup(adapter);
1940 if (status)
1941 goto stats_clean;
1942 status = register_netdev(netdev);
1943 if (status != 0)
1944 goto unsetup;
1945
1946 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1947 return 0;
1948
1949 unsetup:
1950 be_clear(adapter);
1951 stats_clean:
1952 be_stats_cleanup(adapter);
1953 ctrl_clean:
1954 be_ctrl_cleanup(adapter);
1955 free_netdev:
1956 free_netdev(adapter->netdev);
1957 rel_reg:
1958 pci_release_regions(pdev);
1959 disable_dev:
1960 pci_disable_device(pdev);
1961 do_none:
1962 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1963 return status;
1964 }
1965
1966 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1967 {
1968 struct be_adapter *adapter = pci_get_drvdata(pdev);
1969 struct net_device *netdev = adapter->netdev;
1970
1971 netif_device_detach(netdev);
1972 if (netif_running(netdev)) {
1973 rtnl_lock();
1974 be_close(netdev);
1975 rtnl_unlock();
1976 }
1977 be_clear(adapter);
1978
1979 pci_save_state(pdev);
1980 pci_disable_device(pdev);
1981 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1982 return 0;
1983 }
1984
1985 static int be_resume(struct pci_dev *pdev)
1986 {
1987 int status = 0;
1988 struct be_adapter *adapter = pci_get_drvdata(pdev);
1989 struct net_device *netdev = adapter->netdev;
1990
1991 netif_device_detach(netdev);
1992
1993 status = pci_enable_device(pdev);
1994 if (status)
1995 return status;
1996
1997 pci_set_power_state(pdev, 0);
1998 pci_restore_state(pdev);
1999
2000 be_setup(adapter);
2001 if (netif_running(netdev)) {
2002 rtnl_lock();
2003 be_open(netdev);
2004 rtnl_unlock();
2005 }
2006 netif_device_attach(netdev);
2007 return 0;
2008 }
2009
2010 static struct pci_driver be_driver = {
2011 .name = DRV_NAME,
2012 .id_table = be_dev_ids,
2013 .probe = be_probe,
2014 .remove = be_remove,
2015 .suspend = be_suspend,
2016 .resume = be_resume
2017 };
2018
2019 static int __init be_init_module(void)
2020 {
2021 if (rx_frag_size != 8192 && rx_frag_size != 4096
2022 && rx_frag_size != 2048) {
2023 printk(KERN_WARNING DRV_NAME
2024 " : Module param rx_frag_size must be 2048/4096/8192."
2025 " Using 2048\n");
2026 rx_frag_size = 2048;
2027 }
2028
2029 return pci_register_driver(&be_driver);
2030 }
2031 module_init(be_init_module);
2032
2033 static void __exit be_exit_module(void)
2034 {
2035 pci_unregister_driver(&be_driver);
2036 }
2037 module_exit(be_exit_module);
Linux kernel - Deliverables
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