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Merge commit 'v2.6.34-rc1' into for-linus
[deliverable/linux.git] / drivers / net / benet / be_main.c
1 /*
2 * Copyright (C) 2005 - 2010 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, BE_DEVICE_ID2) },
35 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
36 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
37 { 0 }
38 };
39 MODULE_DEVICE_TABLE(pci, be_dev_ids);
40
41 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
42 {
43 struct be_dma_mem *mem = &q->dma_mem;
44 if (mem->va)
45 pci_free_consistent(adapter->pdev, mem->size,
46 mem->va, mem->dma);
47 }
48
49 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
50 u16 len, u16 entry_size)
51 {
52 struct be_dma_mem *mem = &q->dma_mem;
53
54 memset(q, 0, sizeof(*q));
55 q->len = len;
56 q->entry_size = entry_size;
57 mem->size = len * entry_size;
58 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
59 if (!mem->va)
60 return -1;
61 memset(mem->va, 0, mem->size);
62 return 0;
63 }
64
65 static void be_intr_set(struct be_adapter *adapter, bool enable)
66 {
67 u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
68 u32 reg = ioread32(addr);
69 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
70
71 if (adapter->eeh_err)
72 return;
73
74 if (!enabled && enable)
75 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
76 else if (enabled && !enable)
77 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
78 else
79 return;
80
81 iowrite32(reg, addr);
82 }
83
84 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
85 {
86 u32 val = 0;
87 val |= qid & DB_RQ_RING_ID_MASK;
88 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
89 iowrite32(val, adapter->db + DB_RQ_OFFSET);
90 }
91
92 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
93 {
94 u32 val = 0;
95 val |= qid & DB_TXULP_RING_ID_MASK;
96 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
97 iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
98 }
99
100 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
101 bool arm, bool clear_int, u16 num_popped)
102 {
103 u32 val = 0;
104 val |= qid & DB_EQ_RING_ID_MASK;
105
106 if (adapter->eeh_err)
107 return;
108
109 if (arm)
110 val |= 1 << DB_EQ_REARM_SHIFT;
111 if (clear_int)
112 val |= 1 << DB_EQ_CLR_SHIFT;
113 val |= 1 << DB_EQ_EVNT_SHIFT;
114 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
115 iowrite32(val, adapter->db + DB_EQ_OFFSET);
116 }
117
118 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
119 {
120 u32 val = 0;
121 val |= qid & DB_CQ_RING_ID_MASK;
122
123 if (adapter->eeh_err)
124 return;
125
126 if (arm)
127 val |= 1 << DB_CQ_REARM_SHIFT;
128 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
129 iowrite32(val, adapter->db + DB_CQ_OFFSET);
130 }
131
132 static int be_mac_addr_set(struct net_device *netdev, void *p)
133 {
134 struct be_adapter *adapter = netdev_priv(netdev);
135 struct sockaddr *addr = p;
136 int status = 0;
137
138 if (!is_valid_ether_addr(addr->sa_data))
139 return -EADDRNOTAVAIL;
140
141 status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
142 if (status)
143 return status;
144
145 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
146 adapter->if_handle, &adapter->pmac_id);
147 if (!status)
148 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
149
150 return status;
151 }
152
153 void netdev_stats_update(struct be_adapter *adapter)
154 {
155 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
156 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
157 struct be_port_rxf_stats *port_stats =
158 &rxf_stats->port[adapter->port_num];
159 struct net_device_stats *dev_stats = &adapter->netdev->stats;
160 struct be_erx_stats *erx_stats = &hw_stats->erx;
161
162 dev_stats->rx_packets = drvr_stats(adapter)->be_rx_pkts;
163 dev_stats->tx_packets = drvr_stats(adapter)->be_tx_pkts;
164 dev_stats->rx_bytes = drvr_stats(adapter)->be_rx_bytes;
165 dev_stats->tx_bytes = drvr_stats(adapter)->be_tx_bytes;
166
167 /* bad pkts received */
168 dev_stats->rx_errors = port_stats->rx_crc_errors +
169 port_stats->rx_alignment_symbol_errors +
170 port_stats->rx_in_range_errors +
171 port_stats->rx_out_range_errors +
172 port_stats->rx_frame_too_long +
173 port_stats->rx_dropped_too_small +
174 port_stats->rx_dropped_too_short +
175 port_stats->rx_dropped_header_too_small +
176 port_stats->rx_dropped_tcp_length +
177 port_stats->rx_dropped_runt +
178 port_stats->rx_tcp_checksum_errs +
179 port_stats->rx_ip_checksum_errs +
180 port_stats->rx_udp_checksum_errs;
181
182 /* no space in linux buffers: best possible approximation */
183 dev_stats->rx_dropped =
184 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
185
186 /* detailed rx errors */
187 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
188 port_stats->rx_out_range_errors +
189 port_stats->rx_frame_too_long;
190
191 /* receive ring buffer overflow */
192 dev_stats->rx_over_errors = 0;
193
194 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
195
196 /* frame alignment errors */
197 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
198
199 /* receiver fifo overrun */
200 /* drops_no_pbuf is no per i/f, it's per BE card */
201 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
202 port_stats->rx_input_fifo_overflow +
203 rxf_stats->rx_drops_no_pbuf;
204 /* receiver missed packetd */
205 dev_stats->rx_missed_errors = 0;
206
207 /* packet transmit problems */
208 dev_stats->tx_errors = 0;
209
210 /* no space available in linux */
211 dev_stats->tx_dropped = 0;
212
213 dev_stats->multicast = port_stats->rx_multicast_frames;
214 dev_stats->collisions = 0;
215
216 /* detailed tx_errors */
217 dev_stats->tx_aborted_errors = 0;
218 dev_stats->tx_carrier_errors = 0;
219 dev_stats->tx_fifo_errors = 0;
220 dev_stats->tx_heartbeat_errors = 0;
221 dev_stats->tx_window_errors = 0;
222 }
223
224 void be_link_status_update(struct be_adapter *adapter, bool link_up)
225 {
226 struct net_device *netdev = adapter->netdev;
227
228 /* If link came up or went down */
229 if (adapter->link_up != link_up) {
230 adapter->link_speed = -1;
231 if (link_up) {
232 netif_start_queue(netdev);
233 netif_carrier_on(netdev);
234 printk(KERN_INFO "%s: Link up\n", netdev->name);
235 } else {
236 netif_stop_queue(netdev);
237 netif_carrier_off(netdev);
238 printk(KERN_INFO "%s: Link down\n", netdev->name);
239 }
240 adapter->link_up = link_up;
241 }
242 }
243
244 /* Update the EQ delay n BE based on the RX frags consumed / sec */
245 static void be_rx_eqd_update(struct be_adapter *adapter)
246 {
247 struct be_eq_obj *rx_eq = &adapter->rx_eq;
248 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
249 ulong now = jiffies;
250 u32 eqd;
251
252 if (!rx_eq->enable_aic)
253 return;
254
255 /* Wrapped around */
256 if (time_before(now, stats->rx_fps_jiffies)) {
257 stats->rx_fps_jiffies = now;
258 return;
259 }
260
261 /* Update once a second */
262 if ((now - stats->rx_fps_jiffies) < HZ)
263 return;
264
265 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
266 ((now - stats->rx_fps_jiffies) / HZ);
267
268 stats->rx_fps_jiffies = now;
269 stats->be_prev_rx_frags = stats->be_rx_frags;
270 eqd = stats->be_rx_fps / 110000;
271 eqd = eqd << 3;
272 if (eqd > rx_eq->max_eqd)
273 eqd = rx_eq->max_eqd;
274 if (eqd < rx_eq->min_eqd)
275 eqd = rx_eq->min_eqd;
276 if (eqd < 10)
277 eqd = 0;
278 if (eqd != rx_eq->cur_eqd)
279 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
280
281 rx_eq->cur_eqd = eqd;
282 }
283
284 static struct net_device_stats *be_get_stats(struct net_device *dev)
285 {
286 return &dev->stats;
287 }
288
289 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
290 {
291 u64 rate = bytes;
292
293 do_div(rate, ticks / HZ);
294 rate <<= 3; /* bytes/sec -> bits/sec */
295 do_div(rate, 1000000ul); /* MB/Sec */
296
297 return rate;
298 }
299
300 static void be_tx_rate_update(struct be_adapter *adapter)
301 {
302 struct be_drvr_stats *stats = drvr_stats(adapter);
303 ulong now = jiffies;
304
305 /* Wrapped around? */
306 if (time_before(now, stats->be_tx_jiffies)) {
307 stats->be_tx_jiffies = now;
308 return;
309 }
310
311 /* Update tx rate once in two seconds */
312 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
313 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
314 - stats->be_tx_bytes_prev,
315 now - stats->be_tx_jiffies);
316 stats->be_tx_jiffies = now;
317 stats->be_tx_bytes_prev = stats->be_tx_bytes;
318 }
319 }
320
321 static void be_tx_stats_update(struct be_adapter *adapter,
322 u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
323 {
324 struct be_drvr_stats *stats = drvr_stats(adapter);
325 stats->be_tx_reqs++;
326 stats->be_tx_wrbs += wrb_cnt;
327 stats->be_tx_bytes += copied;
328 stats->be_tx_pkts += (gso_segs ? gso_segs : 1);
329 if (stopped)
330 stats->be_tx_stops++;
331 }
332
333 /* Determine number of WRB entries needed to xmit data in an skb */
334 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
335 {
336 int cnt = (skb->len > skb->data_len);
337
338 cnt += skb_shinfo(skb)->nr_frags;
339
340 /* to account for hdr wrb */
341 cnt++;
342 if (cnt & 1) {
343 /* add a dummy to make it an even num */
344 cnt++;
345 *dummy = true;
346 } else
347 *dummy = false;
348 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
349 return cnt;
350 }
351
352 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
353 {
354 wrb->frag_pa_hi = upper_32_bits(addr);
355 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
356 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
357 }
358
359 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
360 bool vlan, u32 wrb_cnt, u32 len)
361 {
362 memset(hdr, 0, sizeof(*hdr));
363
364 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
365
366 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
367 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
368 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
369 hdr, skb_shinfo(skb)->gso_size);
370 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
371 if (is_tcp_pkt(skb))
372 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
373 else if (is_udp_pkt(skb))
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
375 }
376
377 if (vlan && vlan_tx_tag_present(skb)) {
378 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
380 hdr, vlan_tx_tag_get(skb));
381 }
382
383 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
384 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
385 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
386 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
387 }
388
389
390 static int make_tx_wrbs(struct be_adapter *adapter,
391 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
392 {
393 u64 busaddr;
394 u32 i, copied = 0;
395 struct pci_dev *pdev = adapter->pdev;
396 struct sk_buff *first_skb = skb;
397 struct be_queue_info *txq = &adapter->tx_obj.q;
398 struct be_eth_wrb *wrb;
399 struct be_eth_hdr_wrb *hdr;
400
401 hdr = queue_head_node(txq);
402 atomic_add(wrb_cnt, &txq->used);
403 queue_head_inc(txq);
404
405 if (skb->len > skb->data_len) {
406 int len = skb->len - skb->data_len;
407 busaddr = pci_map_single(pdev, skb->data, len,
408 PCI_DMA_TODEVICE);
409 wrb = queue_head_node(txq);
410 wrb_fill(wrb, busaddr, len);
411 be_dws_cpu_to_le(wrb, sizeof(*wrb));
412 queue_head_inc(txq);
413 copied += len;
414 }
415
416 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
417 struct skb_frag_struct *frag =
418 &skb_shinfo(skb)->frags[i];
419 busaddr = pci_map_page(pdev, frag->page,
420 frag->page_offset,
421 frag->size, PCI_DMA_TODEVICE);
422 wrb = queue_head_node(txq);
423 wrb_fill(wrb, busaddr, frag->size);
424 be_dws_cpu_to_le(wrb, sizeof(*wrb));
425 queue_head_inc(txq);
426 copied += frag->size;
427 }
428
429 if (dummy_wrb) {
430 wrb = queue_head_node(txq);
431 wrb_fill(wrb, 0, 0);
432 be_dws_cpu_to_le(wrb, sizeof(*wrb));
433 queue_head_inc(txq);
434 }
435
436 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
437 wrb_cnt, copied);
438 be_dws_cpu_to_le(hdr, sizeof(*hdr));
439
440 return copied;
441 }
442
443 static netdev_tx_t be_xmit(struct sk_buff *skb,
444 struct net_device *netdev)
445 {
446 struct be_adapter *adapter = netdev_priv(netdev);
447 struct be_tx_obj *tx_obj = &adapter->tx_obj;
448 struct be_queue_info *txq = &tx_obj->q;
449 u32 wrb_cnt = 0, copied = 0;
450 u32 start = txq->head;
451 bool dummy_wrb, stopped = false;
452
453 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
454
455 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
456 if (copied) {
457 /* record the sent skb in the sent_skb table */
458 BUG_ON(tx_obj->sent_skb_list[start]);
459 tx_obj->sent_skb_list[start] = skb;
460
461 /* Ensure txq has space for the next skb; Else stop the queue
462 * *BEFORE* ringing the tx doorbell, so that we serialze the
463 * tx compls of the current transmit which'll wake up the queue
464 */
465 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
466 txq->len) {
467 netif_stop_queue(netdev);
468 stopped = true;
469 }
470
471 be_txq_notify(adapter, txq->id, wrb_cnt);
472
473 be_tx_stats_update(adapter, wrb_cnt, copied,
474 skb_shinfo(skb)->gso_segs, stopped);
475 } else {
476 txq->head = start;
477 dev_kfree_skb_any(skb);
478 }
479 return NETDEV_TX_OK;
480 }
481
482 static int be_change_mtu(struct net_device *netdev, int new_mtu)
483 {
484 struct be_adapter *adapter = netdev_priv(netdev);
485 if (new_mtu < BE_MIN_MTU ||
486 new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
487 (ETH_HLEN + ETH_FCS_LEN))) {
488 dev_info(&adapter->pdev->dev,
489 "MTU must be between %d and %d bytes\n",
490 BE_MIN_MTU,
491 (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
492 return -EINVAL;
493 }
494 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
495 netdev->mtu, new_mtu);
496 netdev->mtu = new_mtu;
497 return 0;
498 }
499
500 /*
501 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
502 * If the user configures more, place BE in vlan promiscuous mode.
503 */
504 static int be_vid_config(struct be_adapter *adapter)
505 {
506 u16 vtag[BE_NUM_VLANS_SUPPORTED];
507 u16 ntags = 0, i;
508 int status = 0;
509
510 if (adapter->vlans_added <= adapter->max_vlans) {
511 /* Construct VLAN Table to give to HW */
512 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
513 if (adapter->vlan_tag[i]) {
514 vtag[ntags] = cpu_to_le16(i);
515 ntags++;
516 }
517 }
518 status = be_cmd_vlan_config(adapter, adapter->if_handle,
519 vtag, ntags, 1, 0);
520 } else {
521 status = be_cmd_vlan_config(adapter, adapter->if_handle,
522 NULL, 0, 1, 1);
523 }
524 return status;
525 }
526
527 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
528 {
529 struct be_adapter *adapter = netdev_priv(netdev);
530 struct be_eq_obj *rx_eq = &adapter->rx_eq;
531 struct be_eq_obj *tx_eq = &adapter->tx_eq;
532
533 be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
534 be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
535 adapter->vlan_grp = grp;
536 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
537 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
538 }
539
540 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
541 {
542 struct be_adapter *adapter = netdev_priv(netdev);
543
544 adapter->vlan_tag[vid] = 1;
545 adapter->vlans_added++;
546 if (adapter->vlans_added <= (adapter->max_vlans + 1))
547 be_vid_config(adapter);
548 }
549
550 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
551 {
552 struct be_adapter *adapter = netdev_priv(netdev);
553
554 adapter->vlan_tag[vid] = 0;
555 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
556 adapter->vlans_added--;
557 if (adapter->vlans_added <= adapter->max_vlans)
558 be_vid_config(adapter);
559 }
560
561 static void be_set_multicast_list(struct net_device *netdev)
562 {
563 struct be_adapter *adapter = netdev_priv(netdev);
564
565 if (netdev->flags & IFF_PROMISC) {
566 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
567 adapter->promiscuous = true;
568 goto done;
569 }
570
571 /* BE was previously in promiscous mode; disable it */
572 if (adapter->promiscuous) {
573 adapter->promiscuous = false;
574 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
575 }
576
577 /* Enable multicast promisc if num configured exceeds what we support */
578 if (netdev->flags & IFF_ALLMULTI ||
579 netdev_mc_count(netdev) > BE_MAX_MC) {
580 be_cmd_multicast_set(adapter, adapter->if_handle, NULL,
581 &adapter->mc_cmd_mem);
582 goto done;
583 }
584
585 be_cmd_multicast_set(adapter, adapter->if_handle, netdev,
586 &adapter->mc_cmd_mem);
587 done:
588 return;
589 }
590
591 static void be_rx_rate_update(struct be_adapter *adapter)
592 {
593 struct be_drvr_stats *stats = drvr_stats(adapter);
594 ulong now = jiffies;
595
596 /* Wrapped around */
597 if (time_before(now, stats->be_rx_jiffies)) {
598 stats->be_rx_jiffies = now;
599 return;
600 }
601
602 /* Update the rate once in two seconds */
603 if ((now - stats->be_rx_jiffies) < 2 * HZ)
604 return;
605
606 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
607 - stats->be_rx_bytes_prev,
608 now - stats->be_rx_jiffies);
609 stats->be_rx_jiffies = now;
610 stats->be_rx_bytes_prev = stats->be_rx_bytes;
611 }
612
613 static void be_rx_stats_update(struct be_adapter *adapter,
614 u32 pktsize, u16 numfrags)
615 {
616 struct be_drvr_stats *stats = drvr_stats(adapter);
617
618 stats->be_rx_compl++;
619 stats->be_rx_frags += numfrags;
620 stats->be_rx_bytes += pktsize;
621 stats->be_rx_pkts++;
622 }
623
624 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
625 {
626 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
627
628 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
629 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
630 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
631 if (ip_version) {
632 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
633 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
634 }
635 ipv6_chk = (ip_version && (tcpf || udpf));
636
637 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
638 }
639
640 static struct be_rx_page_info *
641 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
642 {
643 struct be_rx_page_info *rx_page_info;
644 struct be_queue_info *rxq = &adapter->rx_obj.q;
645
646 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
647 BUG_ON(!rx_page_info->page);
648
649 if (rx_page_info->last_page_user) {
650 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
651 adapter->big_page_size, PCI_DMA_FROMDEVICE);
652 rx_page_info->last_page_user = false;
653 }
654
655 atomic_dec(&rxq->used);
656 return rx_page_info;
657 }
658
659 /* Throwaway the data in the Rx completion */
660 static void be_rx_compl_discard(struct be_adapter *adapter,
661 struct be_eth_rx_compl *rxcp)
662 {
663 struct be_queue_info *rxq = &adapter->rx_obj.q;
664 struct be_rx_page_info *page_info;
665 u16 rxq_idx, i, num_rcvd;
666
667 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
668 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
669
670 for (i = 0; i < num_rcvd; i++) {
671 page_info = get_rx_page_info(adapter, rxq_idx);
672 put_page(page_info->page);
673 memset(page_info, 0, sizeof(*page_info));
674 index_inc(&rxq_idx, rxq->len);
675 }
676 }
677
678 /*
679 * skb_fill_rx_data forms a complete skb for an ether frame
680 * indicated by rxcp.
681 */
682 static void skb_fill_rx_data(struct be_adapter *adapter,
683 struct sk_buff *skb, struct be_eth_rx_compl *rxcp,
684 u16 num_rcvd)
685 {
686 struct be_queue_info *rxq = &adapter->rx_obj.q;
687 struct be_rx_page_info *page_info;
688 u16 rxq_idx, i, j;
689 u32 pktsize, hdr_len, curr_frag_len, size;
690 u8 *start;
691
692 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
693 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
694
695 page_info = get_rx_page_info(adapter, rxq_idx);
696
697 start = page_address(page_info->page) + page_info->page_offset;
698 prefetch(start);
699
700 /* Copy data in the first descriptor of this completion */
701 curr_frag_len = min(pktsize, rx_frag_size);
702
703 /* Copy the header portion into skb_data */
704 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
705 memcpy(skb->data, start, hdr_len);
706 skb->len = curr_frag_len;
707 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
708 /* Complete packet has now been moved to data */
709 put_page(page_info->page);
710 skb->data_len = 0;
711 skb->tail += curr_frag_len;
712 } else {
713 skb_shinfo(skb)->nr_frags = 1;
714 skb_shinfo(skb)->frags[0].page = page_info->page;
715 skb_shinfo(skb)->frags[0].page_offset =
716 page_info->page_offset + hdr_len;
717 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
718 skb->data_len = curr_frag_len - hdr_len;
719 skb->tail += hdr_len;
720 }
721 page_info->page = NULL;
722
723 if (pktsize <= rx_frag_size) {
724 BUG_ON(num_rcvd != 1);
725 goto done;
726 }
727
728 /* More frags present for this completion */
729 size = pktsize;
730 for (i = 1, j = 0; i < num_rcvd; i++) {
731 size -= curr_frag_len;
732 index_inc(&rxq_idx, rxq->len);
733 page_info = get_rx_page_info(adapter, rxq_idx);
734
735 curr_frag_len = min(size, rx_frag_size);
736
737 /* Coalesce all frags from the same physical page in one slot */
738 if (page_info->page_offset == 0) {
739 /* Fresh page */
740 j++;
741 skb_shinfo(skb)->frags[j].page = page_info->page;
742 skb_shinfo(skb)->frags[j].page_offset =
743 page_info->page_offset;
744 skb_shinfo(skb)->frags[j].size = 0;
745 skb_shinfo(skb)->nr_frags++;
746 } else {
747 put_page(page_info->page);
748 }
749
750 skb_shinfo(skb)->frags[j].size += curr_frag_len;
751 skb->len += curr_frag_len;
752 skb->data_len += curr_frag_len;
753
754 page_info->page = NULL;
755 }
756 BUG_ON(j > MAX_SKB_FRAGS);
757
758 done:
759 be_rx_stats_update(adapter, pktsize, num_rcvd);
760 return;
761 }
762
763 /* Process the RX completion indicated by rxcp when GRO is disabled */
764 static void be_rx_compl_process(struct be_adapter *adapter,
765 struct be_eth_rx_compl *rxcp)
766 {
767 struct sk_buff *skb;
768 u32 vlanf, vid;
769 u16 num_rcvd;
770 u8 vtm;
771
772 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
773 /* Is it a flush compl that has no data */
774 if (unlikely(num_rcvd == 0))
775 return;
776
777 skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
778 if (unlikely(!skb)) {
779 if (net_ratelimit())
780 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
781 be_rx_compl_discard(adapter, rxcp);
782 return;
783 }
784
785 skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
786
787 if (do_pkt_csum(rxcp, adapter->rx_csum))
788 skb->ip_summed = CHECKSUM_NONE;
789 else
790 skb->ip_summed = CHECKSUM_UNNECESSARY;
791
792 skb->truesize = skb->len + sizeof(struct sk_buff);
793 skb->protocol = eth_type_trans(skb, adapter->netdev);
794 skb->dev = adapter->netdev;
795
796 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
797 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
798
799 /* vlanf could be wrongly set in some cards.
800 * ignore if vtm is not set */
801 if ((adapter->cap & 0x400) && !vtm)
802 vlanf = 0;
803
804 if (unlikely(vlanf)) {
805 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
806 kfree_skb(skb);
807 return;
808 }
809 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
810 vid = be16_to_cpu(vid);
811 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
812 } else {
813 netif_receive_skb(skb);
814 }
815
816 return;
817 }
818
819 /* Process the RX completion indicated by rxcp when GRO is enabled */
820 static void be_rx_compl_process_gro(struct be_adapter *adapter,
821 struct be_eth_rx_compl *rxcp)
822 {
823 struct be_rx_page_info *page_info;
824 struct sk_buff *skb = NULL;
825 struct be_queue_info *rxq = &adapter->rx_obj.q;
826 struct be_eq_obj *eq_obj = &adapter->rx_eq;
827 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
828 u16 i, rxq_idx = 0, vid, j;
829 u8 vtm;
830
831 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
832 /* Is it a flush compl that has no data */
833 if (unlikely(num_rcvd == 0))
834 return;
835
836 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
837 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
838 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
839 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
840
841 /* vlanf could be wrongly set in some cards.
842 * ignore if vtm is not set */
843 if ((adapter->cap & 0x400) && !vtm)
844 vlanf = 0;
845
846 skb = napi_get_frags(&eq_obj->napi);
847 if (!skb) {
848 be_rx_compl_discard(adapter, rxcp);
849 return;
850 }
851
852 remaining = pkt_size;
853 for (i = 0, j = -1; i < num_rcvd; i++) {
854 page_info = get_rx_page_info(adapter, rxq_idx);
855
856 curr_frag_len = min(remaining, rx_frag_size);
857
858 /* Coalesce all frags from the same physical page in one slot */
859 if (i == 0 || page_info->page_offset == 0) {
860 /* First frag or Fresh page */
861 j++;
862 skb_shinfo(skb)->frags[j].page = page_info->page;
863 skb_shinfo(skb)->frags[j].page_offset =
864 page_info->page_offset;
865 skb_shinfo(skb)->frags[j].size = 0;
866 } else {
867 put_page(page_info->page);
868 }
869 skb_shinfo(skb)->frags[j].size += curr_frag_len;
870
871 remaining -= curr_frag_len;
872 index_inc(&rxq_idx, rxq->len);
873 memset(page_info, 0, sizeof(*page_info));
874 }
875 BUG_ON(j > MAX_SKB_FRAGS);
876
877 skb_shinfo(skb)->nr_frags = j + 1;
878 skb->len = pkt_size;
879 skb->data_len = pkt_size;
880 skb->truesize += pkt_size;
881 skb->ip_summed = CHECKSUM_UNNECESSARY;
882
883 if (likely(!vlanf)) {
884 napi_gro_frags(&eq_obj->napi);
885 } else {
886 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
887 vid = be16_to_cpu(vid);
888
889 if (!adapter->vlan_grp || adapter->vlans_added == 0)
890 return;
891
892 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
893 }
894
895 be_rx_stats_update(adapter, pkt_size, num_rcvd);
896 return;
897 }
898
899 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
900 {
901 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
902
903 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
904 return NULL;
905
906 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
907
908 queue_tail_inc(&adapter->rx_obj.cq);
909 return rxcp;
910 }
911
912 /* To reset the valid bit, we need to reset the whole word as
913 * when walking the queue the valid entries are little-endian
914 * and invalid entries are host endian
915 */
916 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
917 {
918 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
919 }
920
921 static inline struct page *be_alloc_pages(u32 size)
922 {
923 gfp_t alloc_flags = GFP_ATOMIC;
924 u32 order = get_order(size);
925 if (order > 0)
926 alloc_flags |= __GFP_COMP;
927 return alloc_pages(alloc_flags, order);
928 }
929
930 /*
931 * Allocate a page, split it to fragments of size rx_frag_size and post as
932 * receive buffers to BE
933 */
934 static void be_post_rx_frags(struct be_adapter *adapter)
935 {
936 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
937 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
938 struct be_queue_info *rxq = &adapter->rx_obj.q;
939 struct page *pagep = NULL;
940 struct be_eth_rx_d *rxd;
941 u64 page_dmaaddr = 0, frag_dmaaddr;
942 u32 posted, page_offset = 0;
943
944 page_info = &page_info_tbl[rxq->head];
945 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
946 if (!pagep) {
947 pagep = be_alloc_pages(adapter->big_page_size);
948 if (unlikely(!pagep)) {
949 drvr_stats(adapter)->be_ethrx_post_fail++;
950 break;
951 }
952 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
953 adapter->big_page_size,
954 PCI_DMA_FROMDEVICE);
955 page_info->page_offset = 0;
956 } else {
957 get_page(pagep);
958 page_info->page_offset = page_offset + rx_frag_size;
959 }
960 page_offset = page_info->page_offset;
961 page_info->page = pagep;
962 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
963 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
964
965 rxd = queue_head_node(rxq);
966 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
967 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
968
969 /* Any space left in the current big page for another frag? */
970 if ((page_offset + rx_frag_size + rx_frag_size) >
971 adapter->big_page_size) {
972 pagep = NULL;
973 page_info->last_page_user = true;
974 }
975
976 prev_page_info = page_info;
977 queue_head_inc(rxq);
978 page_info = &page_info_tbl[rxq->head];
979 }
980 if (pagep)
981 prev_page_info->last_page_user = true;
982
983 if (posted) {
984 atomic_add(posted, &rxq->used);
985 be_rxq_notify(adapter, rxq->id, posted);
986 } else if (atomic_read(&rxq->used) == 0) {
987 /* Let be_worker replenish when memory is available */
988 adapter->rx_post_starved = true;
989 }
990
991 return;
992 }
993
994 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
995 {
996 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
997
998 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
999 return NULL;
1000
1001 be_dws_le_to_cpu(txcp, sizeof(*txcp));
1002
1003 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1004
1005 queue_tail_inc(tx_cq);
1006 return txcp;
1007 }
1008
1009 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1010 {
1011 struct be_queue_info *txq = &adapter->tx_obj.q;
1012 struct be_eth_wrb *wrb;
1013 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1014 struct sk_buff *sent_skb;
1015 u64 busaddr;
1016 u16 cur_index, num_wrbs = 0;
1017
1018 cur_index = txq->tail;
1019 sent_skb = sent_skbs[cur_index];
1020 BUG_ON(!sent_skb);
1021 sent_skbs[cur_index] = NULL;
1022 wrb = queue_tail_node(txq);
1023 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1024 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1025 if (busaddr != 0) {
1026 pci_unmap_single(adapter->pdev, busaddr,
1027 wrb->frag_len, PCI_DMA_TODEVICE);
1028 }
1029 num_wrbs++;
1030 queue_tail_inc(txq);
1031
1032 while (cur_index != last_index) {
1033 cur_index = txq->tail;
1034 wrb = queue_tail_node(txq);
1035 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1036 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1037 if (busaddr != 0) {
1038 pci_unmap_page(adapter->pdev, busaddr,
1039 wrb->frag_len, PCI_DMA_TODEVICE);
1040 }
1041 num_wrbs++;
1042 queue_tail_inc(txq);
1043 }
1044
1045 atomic_sub(num_wrbs, &txq->used);
1046
1047 kfree_skb(sent_skb);
1048 }
1049
1050 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1051 {
1052 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1053
1054 if (!eqe->evt)
1055 return NULL;
1056
1057 eqe->evt = le32_to_cpu(eqe->evt);
1058 queue_tail_inc(&eq_obj->q);
1059 return eqe;
1060 }
1061
1062 static int event_handle(struct be_adapter *adapter,
1063 struct be_eq_obj *eq_obj)
1064 {
1065 struct be_eq_entry *eqe;
1066 u16 num = 0;
1067
1068 while ((eqe = event_get(eq_obj)) != NULL) {
1069 eqe->evt = 0;
1070 num++;
1071 }
1072
1073 /* Deal with any spurious interrupts that come
1074 * without events
1075 */
1076 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1077 if (num)
1078 napi_schedule(&eq_obj->napi);
1079
1080 return num;
1081 }
1082
1083 /* Just read and notify events without processing them.
1084 * Used at the time of destroying event queues */
1085 static void be_eq_clean(struct be_adapter *adapter,
1086 struct be_eq_obj *eq_obj)
1087 {
1088 struct be_eq_entry *eqe;
1089 u16 num = 0;
1090
1091 while ((eqe = event_get(eq_obj)) != NULL) {
1092 eqe->evt = 0;
1093 num++;
1094 }
1095
1096 if (num)
1097 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1098 }
1099
1100 static void be_rx_q_clean(struct be_adapter *adapter)
1101 {
1102 struct be_rx_page_info *page_info;
1103 struct be_queue_info *rxq = &adapter->rx_obj.q;
1104 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1105 struct be_eth_rx_compl *rxcp;
1106 u16 tail;
1107
1108 /* First cleanup pending rx completions */
1109 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1110 be_rx_compl_discard(adapter, rxcp);
1111 be_rx_compl_reset(rxcp);
1112 be_cq_notify(adapter, rx_cq->id, true, 1);
1113 }
1114
1115 /* Then free posted rx buffer that were not used */
1116 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1117 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1118 page_info = get_rx_page_info(adapter, tail);
1119 put_page(page_info->page);
1120 memset(page_info, 0, sizeof(*page_info));
1121 }
1122 BUG_ON(atomic_read(&rxq->used));
1123 }
1124
1125 static void be_tx_compl_clean(struct be_adapter *adapter)
1126 {
1127 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1128 struct be_queue_info *txq = &adapter->tx_obj.q;
1129 struct be_eth_tx_compl *txcp;
1130 u16 end_idx, cmpl = 0, timeo = 0;
1131 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1132 struct sk_buff *sent_skb;
1133 bool dummy_wrb;
1134
1135 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1136 do {
1137 while ((txcp = be_tx_compl_get(tx_cq))) {
1138 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1139 wrb_index, txcp);
1140 be_tx_compl_process(adapter, end_idx);
1141 cmpl++;
1142 }
1143 if (cmpl) {
1144 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1145 cmpl = 0;
1146 }
1147
1148 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1149 break;
1150
1151 mdelay(1);
1152 } while (true);
1153
1154 if (atomic_read(&txq->used))
1155 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1156 atomic_read(&txq->used));
1157
1158 /* free posted tx for which compls will never arrive */
1159 while (atomic_read(&txq->used)) {
1160 sent_skb = sent_skbs[txq->tail];
1161 end_idx = txq->tail;
1162 index_adv(&end_idx,
1163 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1164 be_tx_compl_process(adapter, end_idx);
1165 }
1166 }
1167
1168 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1169 {
1170 struct be_queue_info *q;
1171
1172 q = &adapter->mcc_obj.q;
1173 if (q->created)
1174 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1175 be_queue_free(adapter, q);
1176
1177 q = &adapter->mcc_obj.cq;
1178 if (q->created)
1179 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1180 be_queue_free(adapter, q);
1181 }
1182
1183 /* Must be called only after TX qs are created as MCC shares TX EQ */
1184 static int be_mcc_queues_create(struct be_adapter *adapter)
1185 {
1186 struct be_queue_info *q, *cq;
1187
1188 /* Alloc MCC compl queue */
1189 cq = &adapter->mcc_obj.cq;
1190 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1191 sizeof(struct be_mcc_compl)))
1192 goto err;
1193
1194 /* Ask BE to create MCC compl queue; share TX's eq */
1195 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1196 goto mcc_cq_free;
1197
1198 /* Alloc MCC queue */
1199 q = &adapter->mcc_obj.q;
1200 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1201 goto mcc_cq_destroy;
1202
1203 /* Ask BE to create MCC queue */
1204 if (be_cmd_mccq_create(adapter, q, cq))
1205 goto mcc_q_free;
1206
1207 return 0;
1208
1209 mcc_q_free:
1210 be_queue_free(adapter, q);
1211 mcc_cq_destroy:
1212 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1213 mcc_cq_free:
1214 be_queue_free(adapter, cq);
1215 err:
1216 return -1;
1217 }
1218
1219 static void be_tx_queues_destroy(struct be_adapter *adapter)
1220 {
1221 struct be_queue_info *q;
1222
1223 q = &adapter->tx_obj.q;
1224 if (q->created)
1225 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1226 be_queue_free(adapter, q);
1227
1228 q = &adapter->tx_obj.cq;
1229 if (q->created)
1230 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1231 be_queue_free(adapter, q);
1232
1233 /* Clear any residual events */
1234 be_eq_clean(adapter, &adapter->tx_eq);
1235
1236 q = &adapter->tx_eq.q;
1237 if (q->created)
1238 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1239 be_queue_free(adapter, q);
1240 }
1241
1242 static int be_tx_queues_create(struct be_adapter *adapter)
1243 {
1244 struct be_queue_info *eq, *q, *cq;
1245
1246 adapter->tx_eq.max_eqd = 0;
1247 adapter->tx_eq.min_eqd = 0;
1248 adapter->tx_eq.cur_eqd = 96;
1249 adapter->tx_eq.enable_aic = false;
1250 /* Alloc Tx Event queue */
1251 eq = &adapter->tx_eq.q;
1252 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1253 return -1;
1254
1255 /* Ask BE to create Tx Event queue */
1256 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1257 goto tx_eq_free;
1258 /* Alloc TX eth compl queue */
1259 cq = &adapter->tx_obj.cq;
1260 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1261 sizeof(struct be_eth_tx_compl)))
1262 goto tx_eq_destroy;
1263
1264 /* Ask BE to create Tx eth compl queue */
1265 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1266 goto tx_cq_free;
1267
1268 /* Alloc TX eth queue */
1269 q = &adapter->tx_obj.q;
1270 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1271 goto tx_cq_destroy;
1272
1273 /* Ask BE to create Tx eth queue */
1274 if (be_cmd_txq_create(adapter, q, cq))
1275 goto tx_q_free;
1276 return 0;
1277
1278 tx_q_free:
1279 be_queue_free(adapter, q);
1280 tx_cq_destroy:
1281 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1282 tx_cq_free:
1283 be_queue_free(adapter, cq);
1284 tx_eq_destroy:
1285 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1286 tx_eq_free:
1287 be_queue_free(adapter, eq);
1288 return -1;
1289 }
1290
1291 static void be_rx_queues_destroy(struct be_adapter *adapter)
1292 {
1293 struct be_queue_info *q;
1294
1295 q = &adapter->rx_obj.q;
1296 if (q->created) {
1297 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1298
1299 /* After the rxq is invalidated, wait for a grace time
1300 * of 1ms for all dma to end and the flush compl to arrive
1301 */
1302 mdelay(1);
1303 be_rx_q_clean(adapter);
1304 }
1305 be_queue_free(adapter, q);
1306
1307 q = &adapter->rx_obj.cq;
1308 if (q->created)
1309 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1310 be_queue_free(adapter, q);
1311
1312 /* Clear any residual events */
1313 be_eq_clean(adapter, &adapter->rx_eq);
1314
1315 q = &adapter->rx_eq.q;
1316 if (q->created)
1317 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1318 be_queue_free(adapter, q);
1319 }
1320
1321 static int be_rx_queues_create(struct be_adapter *adapter)
1322 {
1323 struct be_queue_info *eq, *q, *cq;
1324 int rc;
1325
1326 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1327 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1328 adapter->rx_eq.min_eqd = 0;
1329 adapter->rx_eq.cur_eqd = 0;
1330 adapter->rx_eq.enable_aic = true;
1331
1332 /* Alloc Rx Event queue */
1333 eq = &adapter->rx_eq.q;
1334 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1335 sizeof(struct be_eq_entry));
1336 if (rc)
1337 return rc;
1338
1339 /* Ask BE to create Rx Event queue */
1340 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1341 if (rc)
1342 goto rx_eq_free;
1343
1344 /* Alloc RX eth compl queue */
1345 cq = &adapter->rx_obj.cq;
1346 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1347 sizeof(struct be_eth_rx_compl));
1348 if (rc)
1349 goto rx_eq_destroy;
1350
1351 /* Ask BE to create Rx eth compl queue */
1352 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1353 if (rc)
1354 goto rx_cq_free;
1355
1356 /* Alloc RX eth queue */
1357 q = &adapter->rx_obj.q;
1358 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1359 if (rc)
1360 goto rx_cq_destroy;
1361
1362 /* Ask BE to create Rx eth queue */
1363 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1364 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1365 if (rc)
1366 goto rx_q_free;
1367
1368 return 0;
1369 rx_q_free:
1370 be_queue_free(adapter, q);
1371 rx_cq_destroy:
1372 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1373 rx_cq_free:
1374 be_queue_free(adapter, cq);
1375 rx_eq_destroy:
1376 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1377 rx_eq_free:
1378 be_queue_free(adapter, eq);
1379 return rc;
1380 }
1381
1382 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1383 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1384 {
1385 return eq_id - 8 * be_pci_func(adapter);
1386 }
1387
1388 static irqreturn_t be_intx(int irq, void *dev)
1389 {
1390 struct be_adapter *adapter = dev;
1391 int isr;
1392
1393 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1394 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1395 if (!isr)
1396 return IRQ_NONE;
1397
1398 event_handle(adapter, &adapter->tx_eq);
1399 event_handle(adapter, &adapter->rx_eq);
1400
1401 return IRQ_HANDLED;
1402 }
1403
1404 static irqreturn_t be_msix_rx(int irq, void *dev)
1405 {
1406 struct be_adapter *adapter = dev;
1407
1408 event_handle(adapter, &adapter->rx_eq);
1409
1410 return IRQ_HANDLED;
1411 }
1412
1413 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1414 {
1415 struct be_adapter *adapter = dev;
1416
1417 event_handle(adapter, &adapter->tx_eq);
1418
1419 return IRQ_HANDLED;
1420 }
1421
1422 static inline bool do_gro(struct be_adapter *adapter,
1423 struct be_eth_rx_compl *rxcp)
1424 {
1425 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1426 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1427
1428 if (err)
1429 drvr_stats(adapter)->be_rxcp_err++;
1430
1431 return (tcp_frame && !err) ? true : false;
1432 }
1433
1434 int be_poll_rx(struct napi_struct *napi, int budget)
1435 {
1436 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1437 struct be_adapter *adapter =
1438 container_of(rx_eq, struct be_adapter, rx_eq);
1439 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1440 struct be_eth_rx_compl *rxcp;
1441 u32 work_done;
1442
1443 adapter->stats.drvr_stats.be_rx_polls++;
1444 for (work_done = 0; work_done < budget; work_done++) {
1445 rxcp = be_rx_compl_get(adapter);
1446 if (!rxcp)
1447 break;
1448
1449 if (do_gro(adapter, rxcp))
1450 be_rx_compl_process_gro(adapter, rxcp);
1451 else
1452 be_rx_compl_process(adapter, rxcp);
1453
1454 be_rx_compl_reset(rxcp);
1455 }
1456
1457 /* Refill the queue */
1458 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1459 be_post_rx_frags(adapter);
1460
1461 /* All consumed */
1462 if (work_done < budget) {
1463 napi_complete(napi);
1464 be_cq_notify(adapter, rx_cq->id, true, work_done);
1465 } else {
1466 /* More to be consumed; continue with interrupts disabled */
1467 be_cq_notify(adapter, rx_cq->id, false, work_done);
1468 }
1469 return work_done;
1470 }
1471
1472 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1473 * For TX/MCC we don't honour budget; consume everything
1474 */
1475 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1476 {
1477 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1478 struct be_adapter *adapter =
1479 container_of(tx_eq, struct be_adapter, tx_eq);
1480 struct be_queue_info *txq = &adapter->tx_obj.q;
1481 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1482 struct be_eth_tx_compl *txcp;
1483 int tx_compl = 0, mcc_compl, status = 0;
1484 u16 end_idx;
1485
1486 while ((txcp = be_tx_compl_get(tx_cq))) {
1487 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1488 wrb_index, txcp);
1489 be_tx_compl_process(adapter, end_idx);
1490 tx_compl++;
1491 }
1492
1493 mcc_compl = be_process_mcc(adapter, &status);
1494
1495 napi_complete(napi);
1496
1497 if (mcc_compl) {
1498 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1499 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1500 }
1501
1502 if (tx_compl) {
1503 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1504
1505 /* As Tx wrbs have been freed up, wake up netdev queue if
1506 * it was stopped due to lack of tx wrbs.
1507 */
1508 if (netif_queue_stopped(adapter->netdev) &&
1509 atomic_read(&txq->used) < txq->len / 2) {
1510 netif_wake_queue(adapter->netdev);
1511 }
1512
1513 drvr_stats(adapter)->be_tx_events++;
1514 drvr_stats(adapter)->be_tx_compl += tx_compl;
1515 }
1516
1517 return 1;
1518 }
1519
1520 static void be_worker(struct work_struct *work)
1521 {
1522 struct be_adapter *adapter =
1523 container_of(work, struct be_adapter, work.work);
1524
1525 be_cmd_get_stats(adapter, &adapter->stats.cmd);
1526
1527 /* Set EQ delay */
1528 be_rx_eqd_update(adapter);
1529
1530 be_tx_rate_update(adapter);
1531 be_rx_rate_update(adapter);
1532
1533 if (adapter->rx_post_starved) {
1534 adapter->rx_post_starved = false;
1535 be_post_rx_frags(adapter);
1536 }
1537
1538 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1539 }
1540
1541 static void be_msix_disable(struct be_adapter *adapter)
1542 {
1543 if (adapter->msix_enabled) {
1544 pci_disable_msix(adapter->pdev);
1545 adapter->msix_enabled = false;
1546 }
1547 }
1548
1549 static void be_msix_enable(struct be_adapter *adapter)
1550 {
1551 int i, status;
1552
1553 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1554 adapter->msix_entries[i].entry = i;
1555
1556 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1557 BE_NUM_MSIX_VECTORS);
1558 if (status == 0)
1559 adapter->msix_enabled = true;
1560 return;
1561 }
1562
1563 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1564 {
1565 return adapter->msix_entries[
1566 be_evt_bit_get(adapter, eq_id)].vector;
1567 }
1568
1569 static int be_request_irq(struct be_adapter *adapter,
1570 struct be_eq_obj *eq_obj,
1571 void *handler, char *desc)
1572 {
1573 struct net_device *netdev = adapter->netdev;
1574 int vec;
1575
1576 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1577 vec = be_msix_vec_get(adapter, eq_obj->q.id);
1578 return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1579 }
1580
1581 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1582 {
1583 int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1584 free_irq(vec, adapter);
1585 }
1586
1587 static int be_msix_register(struct be_adapter *adapter)
1588 {
1589 int status;
1590
1591 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1592 if (status)
1593 goto err;
1594
1595 status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1596 if (status)
1597 goto free_tx_irq;
1598
1599 return 0;
1600
1601 free_tx_irq:
1602 be_free_irq(adapter, &adapter->tx_eq);
1603 err:
1604 dev_warn(&adapter->pdev->dev,
1605 "MSIX Request IRQ failed - err %d\n", status);
1606 pci_disable_msix(adapter->pdev);
1607 adapter->msix_enabled = false;
1608 return status;
1609 }
1610
1611 static int be_irq_register(struct be_adapter *adapter)
1612 {
1613 struct net_device *netdev = adapter->netdev;
1614 int status;
1615
1616 if (adapter->msix_enabled) {
1617 status = be_msix_register(adapter);
1618 if (status == 0)
1619 goto done;
1620 }
1621
1622 /* INTx */
1623 netdev->irq = adapter->pdev->irq;
1624 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1625 adapter);
1626 if (status) {
1627 dev_err(&adapter->pdev->dev,
1628 "INTx request IRQ failed - err %d\n", status);
1629 return status;
1630 }
1631 done:
1632 adapter->isr_registered = true;
1633 return 0;
1634 }
1635
1636 static void be_irq_unregister(struct be_adapter *adapter)
1637 {
1638 struct net_device *netdev = adapter->netdev;
1639
1640 if (!adapter->isr_registered)
1641 return;
1642
1643 /* INTx */
1644 if (!adapter->msix_enabled) {
1645 free_irq(netdev->irq, adapter);
1646 goto done;
1647 }
1648
1649 /* MSIx */
1650 be_free_irq(adapter, &adapter->tx_eq);
1651 be_free_irq(adapter, &adapter->rx_eq);
1652 done:
1653 adapter->isr_registered = false;
1654 return;
1655 }
1656
1657 static int be_open(struct net_device *netdev)
1658 {
1659 struct be_adapter *adapter = netdev_priv(netdev);
1660 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1661 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1662 bool link_up;
1663 int status;
1664 u8 mac_speed;
1665 u16 link_speed;
1666
1667 /* First time posting */
1668 be_post_rx_frags(adapter);
1669
1670 napi_enable(&rx_eq->napi);
1671 napi_enable(&tx_eq->napi);
1672
1673 be_irq_register(adapter);
1674
1675 be_intr_set(adapter, true);
1676
1677 /* The evt queues are created in unarmed state; arm them */
1678 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1679 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1680
1681 /* Rx compl queue may be in unarmed state; rearm it */
1682 be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1683
1684 /* Now that interrupts are on we can process async mcc */
1685 be_async_mcc_enable(adapter);
1686
1687 status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1688 &link_speed);
1689 if (status)
1690 goto ret_sts;
1691 be_link_status_update(adapter, link_up);
1692
1693 status = be_vid_config(adapter);
1694 if (status)
1695 goto ret_sts;
1696
1697 status = be_cmd_set_flow_control(adapter,
1698 adapter->tx_fc, adapter->rx_fc);
1699 if (status)
1700 goto ret_sts;
1701
1702 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1703 ret_sts:
1704 return status;
1705 }
1706
1707 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1708 {
1709 struct be_dma_mem cmd;
1710 int status = 0;
1711 u8 mac[ETH_ALEN];
1712
1713 memset(mac, 0, ETH_ALEN);
1714
1715 cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1716 cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1717 if (cmd.va == NULL)
1718 return -1;
1719 memset(cmd.va, 0, cmd.size);
1720
1721 if (enable) {
1722 status = pci_write_config_dword(adapter->pdev,
1723 PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1724 if (status) {
1725 dev_err(&adapter->pdev->dev,
1726 "Could not enable Wake-on-lan \n");
1727 pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1728 cmd.dma);
1729 return status;
1730 }
1731 status = be_cmd_enable_magic_wol(adapter,
1732 adapter->netdev->dev_addr, &cmd);
1733 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1734 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1735 } else {
1736 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1737 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1738 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1739 }
1740
1741 pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1742 return status;
1743 }
1744
1745 static int be_setup(struct be_adapter *adapter)
1746 {
1747 struct net_device *netdev = adapter->netdev;
1748 u32 cap_flags, en_flags;
1749 int status;
1750
1751 cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1752 BE_IF_FLAGS_MCAST_PROMISCUOUS |
1753 BE_IF_FLAGS_PROMISCUOUS |
1754 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1755 en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1756 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1757
1758 status = be_cmd_if_create(adapter, cap_flags, en_flags,
1759 netdev->dev_addr, false/* pmac_invalid */,
1760 &adapter->if_handle, &adapter->pmac_id);
1761 if (status != 0)
1762 goto do_none;
1763
1764 status = be_tx_queues_create(adapter);
1765 if (status != 0)
1766 goto if_destroy;
1767
1768 status = be_rx_queues_create(adapter);
1769 if (status != 0)
1770 goto tx_qs_destroy;
1771
1772 status = be_mcc_queues_create(adapter);
1773 if (status != 0)
1774 goto rx_qs_destroy;
1775
1776 adapter->link_speed = -1;
1777
1778 return 0;
1779
1780 rx_qs_destroy:
1781 be_rx_queues_destroy(adapter);
1782 tx_qs_destroy:
1783 be_tx_queues_destroy(adapter);
1784 if_destroy:
1785 be_cmd_if_destroy(adapter, adapter->if_handle);
1786 do_none:
1787 return status;
1788 }
1789
1790 static int be_clear(struct be_adapter *adapter)
1791 {
1792 be_mcc_queues_destroy(adapter);
1793 be_rx_queues_destroy(adapter);
1794 be_tx_queues_destroy(adapter);
1795
1796 be_cmd_if_destroy(adapter, adapter->if_handle);
1797
1798 /* tell fw we're done with firing cmds */
1799 be_cmd_fw_clean(adapter);
1800 return 0;
1801 }
1802
1803 static int be_close(struct net_device *netdev)
1804 {
1805 struct be_adapter *adapter = netdev_priv(netdev);
1806 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1807 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1808 int vec;
1809
1810 cancel_delayed_work_sync(&adapter->work);
1811
1812 be_async_mcc_disable(adapter);
1813
1814 netif_stop_queue(netdev);
1815 netif_carrier_off(netdev);
1816 adapter->link_up = false;
1817
1818 be_intr_set(adapter, false);
1819
1820 if (adapter->msix_enabled) {
1821 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1822 synchronize_irq(vec);
1823 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1824 synchronize_irq(vec);
1825 } else {
1826 synchronize_irq(netdev->irq);
1827 }
1828 be_irq_unregister(adapter);
1829
1830 napi_disable(&rx_eq->napi);
1831 napi_disable(&tx_eq->napi);
1832
1833 /* Wait for all pending tx completions to arrive so that
1834 * all tx skbs are freed.
1835 */
1836 be_tx_compl_clean(adapter);
1837
1838 return 0;
1839 }
1840
1841 #define FW_FILE_HDR_SIGN "ServerEngines Corp. "
1842 char flash_cookie[2][16] = {"*** SE FLAS",
1843 "H DIRECTORY *** "};
1844
1845 static bool be_flash_redboot(struct be_adapter *adapter,
1846 const u8 *p, u32 img_start, int image_size,
1847 int hdr_size)
1848 {
1849 u32 crc_offset;
1850 u8 flashed_crc[4];
1851 int status;
1852
1853 crc_offset = hdr_size + img_start + image_size - 4;
1854
1855 p += crc_offset;
1856
1857 status = be_cmd_get_flash_crc(adapter, flashed_crc,
1858 (img_start + image_size - 4));
1859 if (status) {
1860 dev_err(&adapter->pdev->dev,
1861 "could not get crc from flash, not flashing redboot\n");
1862 return false;
1863 }
1864
1865 /*update redboot only if crc does not match*/
1866 if (!memcmp(flashed_crc, p, 4))
1867 return false;
1868 else
1869 return true;
1870 }
1871
1872 static int be_flash_data(struct be_adapter *adapter,
1873 const struct firmware *fw,
1874 struct be_dma_mem *flash_cmd, int num_of_images)
1875
1876 {
1877 int status = 0, i, filehdr_size = 0;
1878 u32 total_bytes = 0, flash_op;
1879 int num_bytes;
1880 const u8 *p = fw->data;
1881 struct be_cmd_write_flashrom *req = flash_cmd->va;
1882 struct flash_comp *pflashcomp;
1883
1884 struct flash_comp gen3_flash_types[8] = {
1885 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
1886 FLASH_IMAGE_MAX_SIZE_g3},
1887 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
1888 FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
1889 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
1890 FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1891 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
1892 FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1893 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
1894 FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1895 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
1896 FLASH_IMAGE_MAX_SIZE_g3},
1897 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
1898 FLASH_IMAGE_MAX_SIZE_g3},
1899 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
1900 FLASH_IMAGE_MAX_SIZE_g3}
1901 };
1902 struct flash_comp gen2_flash_types[8] = {
1903 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
1904 FLASH_IMAGE_MAX_SIZE_g2},
1905 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
1906 FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
1907 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
1908 FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1909 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
1910 FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1911 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
1912 FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1913 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
1914 FLASH_IMAGE_MAX_SIZE_g2},
1915 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
1916 FLASH_IMAGE_MAX_SIZE_g2},
1917 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
1918 FLASH_IMAGE_MAX_SIZE_g2}
1919 };
1920
1921 if (adapter->generation == BE_GEN3) {
1922 pflashcomp = gen3_flash_types;
1923 filehdr_size = sizeof(struct flash_file_hdr_g3);
1924 } else {
1925 pflashcomp = gen2_flash_types;
1926 filehdr_size = sizeof(struct flash_file_hdr_g2);
1927 }
1928 for (i = 0; i < 8; i++) {
1929 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
1930 (!be_flash_redboot(adapter, fw->data,
1931 pflashcomp[i].offset, pflashcomp[i].size,
1932 filehdr_size)))
1933 continue;
1934 p = fw->data;
1935 p += filehdr_size + pflashcomp[i].offset
1936 + (num_of_images * sizeof(struct image_hdr));
1937 if (p + pflashcomp[i].size > fw->data + fw->size)
1938 return -1;
1939 total_bytes = pflashcomp[i].size;
1940 while (total_bytes) {
1941 if (total_bytes > 32*1024)
1942 num_bytes = 32*1024;
1943 else
1944 num_bytes = total_bytes;
1945 total_bytes -= num_bytes;
1946
1947 if (!total_bytes)
1948 flash_op = FLASHROM_OPER_FLASH;
1949 else
1950 flash_op = FLASHROM_OPER_SAVE;
1951 memcpy(req->params.data_buf, p, num_bytes);
1952 p += num_bytes;
1953 status = be_cmd_write_flashrom(adapter, flash_cmd,
1954 pflashcomp[i].optype, flash_op, num_bytes);
1955 if (status) {
1956 dev_err(&adapter->pdev->dev,
1957 "cmd to write to flash rom failed.\n");
1958 return -1;
1959 }
1960 yield();
1961 }
1962 }
1963 return 0;
1964 }
1965
1966 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
1967 {
1968 if (fhdr == NULL)
1969 return 0;
1970 if (fhdr->build[0] == '3')
1971 return BE_GEN3;
1972 else if (fhdr->build[0] == '2')
1973 return BE_GEN2;
1974 else
1975 return 0;
1976 }
1977
1978 int be_load_fw(struct be_adapter *adapter, u8 *func)
1979 {
1980 char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1981 const struct firmware *fw;
1982 struct flash_file_hdr_g2 *fhdr;
1983 struct flash_file_hdr_g3 *fhdr3;
1984 struct image_hdr *img_hdr_ptr = NULL;
1985 struct be_dma_mem flash_cmd;
1986 int status, i = 0;
1987 const u8 *p;
1988 char fw_ver[FW_VER_LEN];
1989 char fw_cfg;
1990
1991 status = be_cmd_get_fw_ver(adapter, fw_ver);
1992 if (status)
1993 return status;
1994
1995 fw_cfg = *(fw_ver + 2);
1996 if (fw_cfg == '0')
1997 fw_cfg = '1';
1998 strcpy(fw_file, func);
1999
2000 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2001 if (status)
2002 goto fw_exit;
2003
2004 p = fw->data;
2005 fhdr = (struct flash_file_hdr_g2 *) p;
2006 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2007
2008 flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2009 flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
2010 &flash_cmd.dma);
2011 if (!flash_cmd.va) {
2012 status = -ENOMEM;
2013 dev_err(&adapter->pdev->dev,
2014 "Memory allocation failure while flashing\n");
2015 goto fw_exit;
2016 }
2017
2018 if ((adapter->generation == BE_GEN3) &&
2019 (get_ufigen_type(fhdr) == BE_GEN3)) {
2020 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2021 for (i = 0; i < fhdr3->num_imgs; i++) {
2022 img_hdr_ptr = (struct image_hdr *) (fw->data +
2023 (sizeof(struct flash_file_hdr_g3) +
2024 i * sizeof(struct image_hdr)));
2025 if (img_hdr_ptr->imageid == 1) {
2026 status = be_flash_data(adapter, fw,
2027 &flash_cmd, fhdr3->num_imgs);
2028 }
2029
2030 }
2031 } else if ((adapter->generation == BE_GEN2) &&
2032 (get_ufigen_type(fhdr) == BE_GEN2)) {
2033 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2034 } else {
2035 dev_err(&adapter->pdev->dev,
2036 "UFI and Interface are not compatible for flashing\n");
2037 status = -1;
2038 }
2039
2040 pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2041 flash_cmd.dma);
2042 if (status) {
2043 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2044 goto fw_exit;
2045 }
2046
2047 dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2048
2049 fw_exit:
2050 release_firmware(fw);
2051 return status;
2052 }
2053
2054 static struct net_device_ops be_netdev_ops = {
2055 .ndo_open = be_open,
2056 .ndo_stop = be_close,
2057 .ndo_start_xmit = be_xmit,
2058 .ndo_get_stats = be_get_stats,
2059 .ndo_set_rx_mode = be_set_multicast_list,
2060 .ndo_set_mac_address = be_mac_addr_set,
2061 .ndo_change_mtu = be_change_mtu,
2062 .ndo_validate_addr = eth_validate_addr,
2063 .ndo_vlan_rx_register = be_vlan_register,
2064 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
2065 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
2066 };
2067
2068 static void be_netdev_init(struct net_device *netdev)
2069 {
2070 struct be_adapter *adapter = netdev_priv(netdev);
2071
2072 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2073 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2074 NETIF_F_GRO;
2075
2076 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2077
2078 netdev->flags |= IFF_MULTICAST;
2079
2080 adapter->rx_csum = true;
2081
2082 /* Default settings for Rx and Tx flow control */
2083 adapter->rx_fc = true;
2084 adapter->tx_fc = true;
2085
2086 netif_set_gso_max_size(netdev, 65535);
2087
2088 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2089
2090 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2091
2092 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2093 BE_NAPI_WEIGHT);
2094 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2095 BE_NAPI_WEIGHT);
2096
2097 netif_carrier_off(netdev);
2098 netif_stop_queue(netdev);
2099 }
2100
2101 static void be_unmap_pci_bars(struct be_adapter *adapter)
2102 {
2103 if (adapter->csr)
2104 iounmap(adapter->csr);
2105 if (adapter->db)
2106 iounmap(adapter->db);
2107 if (adapter->pcicfg)
2108 iounmap(adapter->pcicfg);
2109 }
2110
2111 static int be_map_pci_bars(struct be_adapter *adapter)
2112 {
2113 u8 __iomem *addr;
2114 int pcicfg_reg;
2115
2116 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2117 pci_resource_len(adapter->pdev, 2));
2118 if (addr == NULL)
2119 return -ENOMEM;
2120 adapter->csr = addr;
2121
2122 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2123 128 * 1024);
2124 if (addr == NULL)
2125 goto pci_map_err;
2126 adapter->db = addr;
2127
2128 if (adapter->generation == BE_GEN2)
2129 pcicfg_reg = 1;
2130 else
2131 pcicfg_reg = 0;
2132
2133 addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2134 pci_resource_len(adapter->pdev, pcicfg_reg));
2135 if (addr == NULL)
2136 goto pci_map_err;
2137 adapter->pcicfg = addr;
2138
2139 return 0;
2140 pci_map_err:
2141 be_unmap_pci_bars(adapter);
2142 return -ENOMEM;
2143 }
2144
2145
2146 static void be_ctrl_cleanup(struct be_adapter *adapter)
2147 {
2148 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2149
2150 be_unmap_pci_bars(adapter);
2151
2152 if (mem->va)
2153 pci_free_consistent(adapter->pdev, mem->size,
2154 mem->va, mem->dma);
2155
2156 mem = &adapter->mc_cmd_mem;
2157 if (mem->va)
2158 pci_free_consistent(adapter->pdev, mem->size,
2159 mem->va, mem->dma);
2160 }
2161
2162 static int be_ctrl_init(struct be_adapter *adapter)
2163 {
2164 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2165 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2166 struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2167 int status;
2168
2169 status = be_map_pci_bars(adapter);
2170 if (status)
2171 goto done;
2172
2173 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2174 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2175 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2176 if (!mbox_mem_alloc->va) {
2177 status = -ENOMEM;
2178 goto unmap_pci_bars;
2179 }
2180
2181 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2182 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2183 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2184 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2185
2186 mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2187 mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2188 &mc_cmd_mem->dma);
2189 if (mc_cmd_mem->va == NULL) {
2190 status = -ENOMEM;
2191 goto free_mbox;
2192 }
2193 memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2194
2195 spin_lock_init(&adapter->mbox_lock);
2196 spin_lock_init(&adapter->mcc_lock);
2197 spin_lock_init(&adapter->mcc_cq_lock);
2198
2199 pci_save_state(adapter->pdev);
2200 return 0;
2201
2202 free_mbox:
2203 pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2204 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2205
2206 unmap_pci_bars:
2207 be_unmap_pci_bars(adapter);
2208
2209 done:
2210 return status;
2211 }
2212
2213 static void be_stats_cleanup(struct be_adapter *adapter)
2214 {
2215 struct be_stats_obj *stats = &adapter->stats;
2216 struct be_dma_mem *cmd = &stats->cmd;
2217
2218 if (cmd->va)
2219 pci_free_consistent(adapter->pdev, cmd->size,
2220 cmd->va, cmd->dma);
2221 }
2222
2223 static int be_stats_init(struct be_adapter *adapter)
2224 {
2225 struct be_stats_obj *stats = &adapter->stats;
2226 struct be_dma_mem *cmd = &stats->cmd;
2227
2228 cmd->size = sizeof(struct be_cmd_req_get_stats);
2229 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2230 if (cmd->va == NULL)
2231 return -1;
2232 memset(cmd->va, 0, cmd->size);
2233 return 0;
2234 }
2235
2236 static void __devexit be_remove(struct pci_dev *pdev)
2237 {
2238 struct be_adapter *adapter = pci_get_drvdata(pdev);
2239
2240 if (!adapter)
2241 return;
2242
2243 unregister_netdev(adapter->netdev);
2244
2245 be_clear(adapter);
2246
2247 be_stats_cleanup(adapter);
2248
2249 be_ctrl_cleanup(adapter);
2250
2251 be_msix_disable(adapter);
2252
2253 pci_set_drvdata(pdev, NULL);
2254 pci_release_regions(pdev);
2255 pci_disable_device(pdev);
2256
2257 free_netdev(adapter->netdev);
2258 }
2259
2260 static int be_get_config(struct be_adapter *adapter)
2261 {
2262 int status;
2263 u8 mac[ETH_ALEN];
2264
2265 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2266 if (status)
2267 return status;
2268
2269 status = be_cmd_query_fw_cfg(adapter,
2270 &adapter->port_num, &adapter->cap);
2271 if (status)
2272 return status;
2273
2274 memset(mac, 0, ETH_ALEN);
2275 status = be_cmd_mac_addr_query(adapter, mac,
2276 MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2277 if (status)
2278 return status;
2279
2280 if (!is_valid_ether_addr(mac))
2281 return -EADDRNOTAVAIL;
2282
2283 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2284 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2285
2286 if (adapter->cap & 0x400)
2287 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2288 else
2289 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2290
2291 return 0;
2292 }
2293
2294 static int __devinit be_probe(struct pci_dev *pdev,
2295 const struct pci_device_id *pdev_id)
2296 {
2297 int status = 0;
2298 struct be_adapter *adapter;
2299 struct net_device *netdev;
2300
2301 status = pci_enable_device(pdev);
2302 if (status)
2303 goto do_none;
2304
2305 status = pci_request_regions(pdev, DRV_NAME);
2306 if (status)
2307 goto disable_dev;
2308 pci_set_master(pdev);
2309
2310 netdev = alloc_etherdev(sizeof(struct be_adapter));
2311 if (netdev == NULL) {
2312 status = -ENOMEM;
2313 goto rel_reg;
2314 }
2315 adapter = netdev_priv(netdev);
2316
2317 switch (pdev->device) {
2318 case BE_DEVICE_ID1:
2319 case OC_DEVICE_ID1:
2320 adapter->generation = BE_GEN2;
2321 break;
2322 case BE_DEVICE_ID2:
2323 case OC_DEVICE_ID2:
2324 adapter->generation = BE_GEN3;
2325 break;
2326 default:
2327 adapter->generation = 0;
2328 }
2329
2330 adapter->pdev = pdev;
2331 pci_set_drvdata(pdev, adapter);
2332 adapter->netdev = netdev;
2333 be_netdev_init(netdev);
2334 SET_NETDEV_DEV(netdev, &pdev->dev);
2335
2336 be_msix_enable(adapter);
2337
2338 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2339 if (!status) {
2340 netdev->features |= NETIF_F_HIGHDMA;
2341 } else {
2342 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2343 if (status) {
2344 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2345 goto free_netdev;
2346 }
2347 }
2348
2349 status = be_ctrl_init(adapter);
2350 if (status)
2351 goto free_netdev;
2352
2353 /* sync up with fw's ready state */
2354 status = be_cmd_POST(adapter);
2355 if (status)
2356 goto ctrl_clean;
2357
2358 /* tell fw we're ready to fire cmds */
2359 status = be_cmd_fw_init(adapter);
2360 if (status)
2361 goto ctrl_clean;
2362
2363 status = be_cmd_reset_function(adapter);
2364 if (status)
2365 goto ctrl_clean;
2366
2367 status = be_stats_init(adapter);
2368 if (status)
2369 goto ctrl_clean;
2370
2371 status = be_get_config(adapter);
2372 if (status)
2373 goto stats_clean;
2374
2375 INIT_DELAYED_WORK(&adapter->work, be_worker);
2376
2377 status = be_setup(adapter);
2378 if (status)
2379 goto stats_clean;
2380
2381 status = register_netdev(netdev);
2382 if (status != 0)
2383 goto unsetup;
2384
2385 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2386 return 0;
2387
2388 unsetup:
2389 be_clear(adapter);
2390 stats_clean:
2391 be_stats_cleanup(adapter);
2392 ctrl_clean:
2393 be_ctrl_cleanup(adapter);
2394 free_netdev:
2395 be_msix_disable(adapter);
2396 free_netdev(adapter->netdev);
2397 pci_set_drvdata(pdev, NULL);
2398 rel_reg:
2399 pci_release_regions(pdev);
2400 disable_dev:
2401 pci_disable_device(pdev);
2402 do_none:
2403 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2404 return status;
2405 }
2406
2407 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2408 {
2409 struct be_adapter *adapter = pci_get_drvdata(pdev);
2410 struct net_device *netdev = adapter->netdev;
2411
2412 if (adapter->wol)
2413 be_setup_wol(adapter, true);
2414
2415 netif_device_detach(netdev);
2416 if (netif_running(netdev)) {
2417 rtnl_lock();
2418 be_close(netdev);
2419 rtnl_unlock();
2420 }
2421 be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2422 be_clear(adapter);
2423
2424 pci_save_state(pdev);
2425 pci_disable_device(pdev);
2426 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2427 return 0;
2428 }
2429
2430 static int be_resume(struct pci_dev *pdev)
2431 {
2432 int status = 0;
2433 struct be_adapter *adapter = pci_get_drvdata(pdev);
2434 struct net_device *netdev = adapter->netdev;
2435
2436 netif_device_detach(netdev);
2437
2438 status = pci_enable_device(pdev);
2439 if (status)
2440 return status;
2441
2442 pci_set_power_state(pdev, 0);
2443 pci_restore_state(pdev);
2444
2445 /* tell fw we're ready to fire cmds */
2446 status = be_cmd_fw_init(adapter);
2447 if (status)
2448 return status;
2449
2450 be_setup(adapter);
2451 if (netif_running(netdev)) {
2452 rtnl_lock();
2453 be_open(netdev);
2454 rtnl_unlock();
2455 }
2456 netif_device_attach(netdev);
2457
2458 if (adapter->wol)
2459 be_setup_wol(adapter, false);
2460 return 0;
2461 }
2462
2463 /*
2464 * An FLR will stop BE from DMAing any data.
2465 */
2466 static void be_shutdown(struct pci_dev *pdev)
2467 {
2468 struct be_adapter *adapter = pci_get_drvdata(pdev);
2469 struct net_device *netdev = adapter->netdev;
2470
2471 netif_device_detach(netdev);
2472
2473 be_cmd_reset_function(adapter);
2474
2475 if (adapter->wol)
2476 be_setup_wol(adapter, true);
2477
2478 pci_disable_device(pdev);
2479
2480 return;
2481 }
2482
2483 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2484 pci_channel_state_t state)
2485 {
2486 struct be_adapter *adapter = pci_get_drvdata(pdev);
2487 struct net_device *netdev = adapter->netdev;
2488
2489 dev_err(&adapter->pdev->dev, "EEH error detected\n");
2490
2491 adapter->eeh_err = true;
2492
2493 netif_device_detach(netdev);
2494
2495 if (netif_running(netdev)) {
2496 rtnl_lock();
2497 be_close(netdev);
2498 rtnl_unlock();
2499 }
2500 be_clear(adapter);
2501
2502 if (state == pci_channel_io_perm_failure)
2503 return PCI_ERS_RESULT_DISCONNECT;
2504
2505 pci_disable_device(pdev);
2506
2507 return PCI_ERS_RESULT_NEED_RESET;
2508 }
2509
2510 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2511 {
2512 struct be_adapter *adapter = pci_get_drvdata(pdev);
2513 int status;
2514
2515 dev_info(&adapter->pdev->dev, "EEH reset\n");
2516 adapter->eeh_err = false;
2517
2518 status = pci_enable_device(pdev);
2519 if (status)
2520 return PCI_ERS_RESULT_DISCONNECT;
2521
2522 pci_set_master(pdev);
2523 pci_set_power_state(pdev, 0);
2524 pci_restore_state(pdev);
2525
2526 /* Check if card is ok and fw is ready */
2527 status = be_cmd_POST(adapter);
2528 if (status)
2529 return PCI_ERS_RESULT_DISCONNECT;
2530
2531 return PCI_ERS_RESULT_RECOVERED;
2532 }
2533
2534 static void be_eeh_resume(struct pci_dev *pdev)
2535 {
2536 int status = 0;
2537 struct be_adapter *adapter = pci_get_drvdata(pdev);
2538 struct net_device *netdev = adapter->netdev;
2539
2540 dev_info(&adapter->pdev->dev, "EEH resume\n");
2541
2542 pci_save_state(pdev);
2543
2544 /* tell fw we're ready to fire cmds */
2545 status = be_cmd_fw_init(adapter);
2546 if (status)
2547 goto err;
2548
2549 status = be_setup(adapter);
2550 if (status)
2551 goto err;
2552
2553 if (netif_running(netdev)) {
2554 status = be_open(netdev);
2555 if (status)
2556 goto err;
2557 }
2558 netif_device_attach(netdev);
2559 return;
2560 err:
2561 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2562 return;
2563 }
2564
2565 static struct pci_error_handlers be_eeh_handlers = {
2566 .error_detected = be_eeh_err_detected,
2567 .slot_reset = be_eeh_reset,
2568 .resume = be_eeh_resume,
2569 };
2570
2571 static struct pci_driver be_driver = {
2572 .name = DRV_NAME,
2573 .id_table = be_dev_ids,
2574 .probe = be_probe,
2575 .remove = be_remove,
2576 .suspend = be_suspend,
2577 .resume = be_resume,
2578 .shutdown = be_shutdown,
2579 .err_handler = &be_eeh_handlers
2580 };
2581
2582 static int __init be_init_module(void)
2583 {
2584 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2585 rx_frag_size != 2048) {
2586 printk(KERN_WARNING DRV_NAME
2587 " : Module param rx_frag_size must be 2048/4096/8192."
2588 " Using 2048\n");
2589 rx_frag_size = 2048;
2590 }
2591
2592 return pci_register_driver(&be_driver);
2593 }
2594 module_init(be_init_module);
2595
2596 static void __exit be_exit_module(void)
2597 {
2598 pci_unregister_driver(&be_driver);
2599 }
2600 module_exit(be_exit_module);
Linux kernel - Deliverables
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