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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / net / benet / be_main.c
blob6d5e81f7046f2f769c5f5f78026927f6ad6f2eca
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 static int be_mac_addr_set(struct net_device *netdev, void *p)
121 {
122 struct be_adapter *adapter = netdev_priv(netdev);
123 struct sockaddr *addr = p;
124 int status = 0;
125
126 status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
127 if (status)
128 return status;
129
130 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
131 adapter->if_handle, &adapter->pmac_id);
132 if (!status)
133 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
134
135 return status;
136 }
137
138 void netdev_stats_update(struct be_adapter *adapter)
139 {
140 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
141 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
142 struct be_port_rxf_stats *port_stats =
143 &rxf_stats->port[adapter->port_num];
144 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
145 struct be_erx_stats *erx_stats = &hw_stats->erx;
146
147 dev_stats->rx_packets = port_stats->rx_total_frames;
148 dev_stats->tx_packets = port_stats->tx_unicastframes +
149 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
150 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
151 (u64) port_stats->rx_bytes_lsd;
152 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
153 (u64) port_stats->tx_bytes_lsd;
154
155 /* bad pkts received */
156 dev_stats->rx_errors = port_stats->rx_crc_errors +
157 port_stats->rx_alignment_symbol_errors +
158 port_stats->rx_in_range_errors +
159 port_stats->rx_out_range_errors +
160 port_stats->rx_frame_too_long +
161 port_stats->rx_dropped_too_small +
162 port_stats->rx_dropped_too_short +
163 port_stats->rx_dropped_header_too_small +
164 port_stats->rx_dropped_tcp_length +
165 port_stats->rx_dropped_runt +
166 port_stats->rx_tcp_checksum_errs +
167 port_stats->rx_ip_checksum_errs +
168 port_stats->rx_udp_checksum_errs;
169
170 /* no space in linux buffers: best possible approximation */
171 dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
172
173 /* detailed rx errors */
174 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
175 port_stats->rx_out_range_errors +
176 port_stats->rx_frame_too_long;
177
178 /* receive ring buffer overflow */
179 dev_stats->rx_over_errors = 0;
180
181 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
182
183 /* frame alignment errors */
184 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
185
186 /* receiver fifo overrun */
187 /* drops_no_pbuf is no per i/f, it's per BE card */
188 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
189 port_stats->rx_input_fifo_overflow +
190 rxf_stats->rx_drops_no_pbuf;
191 /* receiver missed packetd */
192 dev_stats->rx_missed_errors = 0;
193
194 /* packet transmit problems */
195 dev_stats->tx_errors = 0;
196
197 /* no space available in linux */
198 dev_stats->tx_dropped = 0;
199
200 dev_stats->multicast = port_stats->rx_multicast_frames;
201 dev_stats->collisions = 0;
202
203 /* detailed tx_errors */
204 dev_stats->tx_aborted_errors = 0;
205 dev_stats->tx_carrier_errors = 0;
206 dev_stats->tx_fifo_errors = 0;
207 dev_stats->tx_heartbeat_errors = 0;
208 dev_stats->tx_window_errors = 0;
209 }
210
211 void be_link_status_update(struct be_adapter *adapter, bool link_up)
212 {
213 struct net_device *netdev = adapter->netdev;
214
215 /* If link came up or went down */
216 if (adapter->link_up != link_up) {
217 if (link_up) {
218 netif_start_queue(netdev);
219 netif_carrier_on(netdev);
220 printk(KERN_INFO "%s: Link up\n", netdev->name);
221 } else {
222 netif_stop_queue(netdev);
223 netif_carrier_off(netdev);
224 printk(KERN_INFO "%s: Link down\n", netdev->name);
225 }
226 adapter->link_up = link_up;
227 }
228 }
229
230 /* Update the EQ delay n BE based on the RX frags consumed / sec */
231 static void be_rx_eqd_update(struct be_adapter *adapter)
232 {
233 struct be_eq_obj *rx_eq = &adapter->rx_eq;
234 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
235 ulong now = jiffies;
236 u32 eqd;
237
238 if (!rx_eq->enable_aic)
239 return;
240
241 /* Wrapped around */
242 if (time_before(now, stats->rx_fps_jiffies)) {
243 stats->rx_fps_jiffies = now;
244 return;
245 }
246
247 /* Update once a second */
248 if ((now - stats->rx_fps_jiffies) < HZ)
249 return;
250
251 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
252 ((now - stats->rx_fps_jiffies) / HZ);
253
254 stats->rx_fps_jiffies = now;
255 stats->be_prev_rx_frags = stats->be_rx_frags;
256 eqd = stats->be_rx_fps / 110000;
257 eqd = eqd << 3;
258 if (eqd > rx_eq->max_eqd)
259 eqd = rx_eq->max_eqd;
260 if (eqd < rx_eq->min_eqd)
261 eqd = rx_eq->min_eqd;
262 if (eqd < 10)
263 eqd = 0;
264 if (eqd != rx_eq->cur_eqd)
265 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
266
267 rx_eq->cur_eqd = eqd;
268 }
269
270 static struct net_device_stats *be_get_stats(struct net_device *dev)
271 {
272 struct be_adapter *adapter = netdev_priv(dev);
273
274 return &adapter->stats.net_stats;
275 }
276
277 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
278 {
279 u64 rate = bytes;
280
281 do_div(rate, ticks / HZ);
282 rate <<= 3; /* bytes/sec -> bits/sec */
283 do_div(rate, 1000000ul); /* MB/Sec */
284
285 return rate;
286 }
287
288 static void be_tx_rate_update(struct be_adapter *adapter)
289 {
290 struct be_drvr_stats *stats = drvr_stats(adapter);
291 ulong now = jiffies;
292
293 /* Wrapped around? */
294 if (time_before(now, stats->be_tx_jiffies)) {
295 stats->be_tx_jiffies = now;
296 return;
297 }
298
299 /* Update tx rate once in two seconds */
300 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
301 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
302 - stats->be_tx_bytes_prev,
303 now - stats->be_tx_jiffies);
304 stats->be_tx_jiffies = now;
305 stats->be_tx_bytes_prev = stats->be_tx_bytes;
306 }
307 }
308
309 static void be_tx_stats_update(struct be_adapter *adapter,
310 u32 wrb_cnt, u32 copied, bool stopped)
311 {
312 struct be_drvr_stats *stats = drvr_stats(adapter);
313 stats->be_tx_reqs++;
314 stats->be_tx_wrbs += wrb_cnt;
315 stats->be_tx_bytes += copied;
316 if (stopped)
317 stats->be_tx_stops++;
318 }
319
320 /* Determine number of WRB entries needed to xmit data in an skb */
321 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
322 {
323 int cnt = (skb->len > skb->data_len);
324
325 cnt += skb_shinfo(skb)->nr_frags;
326
327 /* to account for hdr wrb */
328 cnt++;
329 if (cnt & 1) {
330 /* add a dummy to make it an even num */
331 cnt++;
332 *dummy = true;
333 } else
334 *dummy = false;
335 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
336 return cnt;
337 }
338
339 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
340 {
341 wrb->frag_pa_hi = upper_32_bits(addr);
342 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
343 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
344 }
345
346 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
347 bool vlan, u32 wrb_cnt, u32 len)
348 {
349 memset(hdr, 0, sizeof(*hdr));
350
351 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
352
353 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
354 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
355 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
356 hdr, skb_shinfo(skb)->gso_size);
357 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
358 if (is_tcp_pkt(skb))
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
360 else if (is_udp_pkt(skb))
361 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
362 }
363
364 if (vlan && vlan_tx_tag_present(skb)) {
365 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
366 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
367 hdr, vlan_tx_tag_get(skb));
368 }
369
370 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
372 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
373 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
374 }
375
376
377 static int make_tx_wrbs(struct be_adapter *adapter,
378 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
379 {
380 u64 busaddr;
381 u32 i, copied = 0;
382 struct pci_dev *pdev = adapter->pdev;
383 struct sk_buff *first_skb = skb;
384 struct be_queue_info *txq = &adapter->tx_obj.q;
385 struct be_eth_wrb *wrb;
386 struct be_eth_hdr_wrb *hdr;
387
388 hdr = queue_head_node(txq);
389 atomic_add(wrb_cnt, &txq->used);
390 queue_head_inc(txq);
391
392 if (skb_dma_map(&pdev->dev, skb, DMA_TO_DEVICE)) {
393 dev_err(&pdev->dev, "TX DMA mapping failed\n");
394 return 0;
395 }
396
397 if (skb->len > skb->data_len) {
398 int len = skb->len - skb->data_len;
399 wrb = queue_head_node(txq);
400 busaddr = skb_shinfo(skb)->dma_head;
401 wrb_fill(wrb, busaddr, len);
402 be_dws_cpu_to_le(wrb, sizeof(*wrb));
403 queue_head_inc(txq);
404 copied += len;
405 }
406
407 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
408 struct skb_frag_struct *frag =
409 &skb_shinfo(skb)->frags[i];
410
411 busaddr = skb_shinfo(skb)->dma_maps[i];
412 wrb = queue_head_node(txq);
413 wrb_fill(wrb, busaddr, frag->size);
414 be_dws_cpu_to_le(wrb, sizeof(*wrb));
415 queue_head_inc(txq);
416 copied += frag->size;
417 }
418
419 if (dummy_wrb) {
420 wrb = queue_head_node(txq);
421 wrb_fill(wrb, 0, 0);
422 be_dws_cpu_to_le(wrb, sizeof(*wrb));
423 queue_head_inc(txq);
424 }
425
426 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
427 wrb_cnt, copied);
428 be_dws_cpu_to_le(hdr, sizeof(*hdr));
429
430 return copied;
431 }
432
433 static netdev_tx_t be_xmit(struct sk_buff *skb,
434 struct net_device *netdev)
435 {
436 struct be_adapter *adapter = netdev_priv(netdev);
437 struct be_tx_obj *tx_obj = &adapter->tx_obj;
438 struct be_queue_info *txq = &tx_obj->q;
439 u32 wrb_cnt = 0, copied = 0;
440 u32 start = txq->head;
441 bool dummy_wrb, stopped = false;
442
443 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
444
445 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
446 if (copied) {
447 /* record the sent skb in the sent_skb table */
448 BUG_ON(tx_obj->sent_skb_list[start]);
449 tx_obj->sent_skb_list[start] = skb;
450
451 /* Ensure txq has space for the next skb; Else stop the queue
452 * *BEFORE* ringing the tx doorbell, so that we serialze the
453 * tx compls of the current transmit which'll wake up the queue
454 */
455 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
456 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 } else {
465 txq->head = start;
466 dev_kfree_skb_any(skb);
467 }
468 return NETDEV_TX_OK;
469 }
470
471 static int be_change_mtu(struct net_device *netdev, int new_mtu)
472 {
473 struct be_adapter *adapter = netdev_priv(netdev);
474 if (new_mtu < BE_MIN_MTU ||
475 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
476 dev_info(&adapter->pdev->dev,
477 "MTU must be between %d and %d bytes\n",
478 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
479 return -EINVAL;
480 }
481 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
482 netdev->mtu, new_mtu);
483 netdev->mtu = new_mtu;
484 return 0;
485 }
486
487 /*
488 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
489 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
490 * set the BE in promiscuous VLAN mode.
491 */
492 static int be_vid_config(struct be_adapter *adapter)
493 {
494 u16 vtag[BE_NUM_VLANS_SUPPORTED];
495 u16 ntags = 0, i;
496 int status;
497
498 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
499 /* Construct VLAN Table to give to HW */
500 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
501 if (adapter->vlan_tag[i]) {
502 vtag[ntags] = cpu_to_le16(i);
503 ntags++;
504 }
505 }
506 status = be_cmd_vlan_config(adapter, adapter->if_handle,
507 vtag, ntags, 1, 0);
508 } else {
509 status = be_cmd_vlan_config(adapter, adapter->if_handle,
510 NULL, 0, 1, 1);
511 }
512 return status;
513 }
514
515 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
516 {
517 struct be_adapter *adapter = netdev_priv(netdev);
518 struct be_eq_obj *rx_eq = &adapter->rx_eq;
519 struct be_eq_obj *tx_eq = &adapter->tx_eq;
520
521 be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
522 be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
523 adapter->vlan_grp = grp;
524 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
525 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
526 }
527
528 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
529 {
530 struct be_adapter *adapter = netdev_priv(netdev);
531
532 adapter->num_vlans++;
533 adapter->vlan_tag[vid] = 1;
534
535 be_vid_config(adapter);
536 }
537
538 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
539 {
540 struct be_adapter *adapter = netdev_priv(netdev);
541
542 adapter->num_vlans--;
543 adapter->vlan_tag[vid] = 0;
544
545 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
546 be_vid_config(adapter);
547 }
548
549 static void be_set_multicast_list(struct net_device *netdev)
550 {
551 struct be_adapter *adapter = netdev_priv(netdev);
552
553 if (netdev->flags & IFF_PROMISC) {
554 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
555 adapter->promiscuous = true;
556 goto done;
557 }
558
559 /* BE was previously in promiscous mode; disable it */
560 if (adapter->promiscuous) {
561 adapter->promiscuous = false;
562 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
563 }
564
565 if (netdev->flags & IFF_ALLMULTI) {
566 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
567 goto done;
568 }
569
570 be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
571 netdev->mc_count);
572 done:
573 return;
574 }
575
576 static void be_rx_rate_update(struct be_adapter *adapter)
577 {
578 struct be_drvr_stats *stats = drvr_stats(adapter);
579 ulong now = jiffies;
580
581 /* Wrapped around */
582 if (time_before(now, stats->be_rx_jiffies)) {
583 stats->be_rx_jiffies = now;
584 return;
585 }
586
587 /* Update the rate once in two seconds */
588 if ((now - stats->be_rx_jiffies) < 2 * HZ)
589 return;
590
591 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
592 - stats->be_rx_bytes_prev,
593 now - stats->be_rx_jiffies);
594 stats->be_rx_jiffies = now;
595 stats->be_rx_bytes_prev = stats->be_rx_bytes;
596 }
597
598 static void be_rx_stats_update(struct be_adapter *adapter,
599 u32 pktsize, u16 numfrags)
600 {
601 struct be_drvr_stats *stats = drvr_stats(adapter);
602
603 stats->be_rx_compl++;
604 stats->be_rx_frags += numfrags;
605 stats->be_rx_bytes += pktsize;
606 }
607
608 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
609 {
610 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
611
612 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
613 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
614 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
615 if (ip_version) {
616 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
617 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
618 }
619 ipv6_chk = (ip_version && (tcpf || udpf));
620
621 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
622 }
623
624 static struct be_rx_page_info *
625 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
626 {
627 struct be_rx_page_info *rx_page_info;
628 struct be_queue_info *rxq = &adapter->rx_obj.q;
629
630 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
631 BUG_ON(!rx_page_info->page);
632
633 if (rx_page_info->last_page_user)
634 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
635 adapter->big_page_size, PCI_DMA_FROMDEVICE);
636
637 atomic_dec(&rxq->used);
638 return rx_page_info;
639 }
640
641 /* Throwaway the data in the Rx completion */
642 static void be_rx_compl_discard(struct be_adapter *adapter,
643 struct be_eth_rx_compl *rxcp)
644 {
645 struct be_queue_info *rxq = &adapter->rx_obj.q;
646 struct be_rx_page_info *page_info;
647 u16 rxq_idx, i, num_rcvd;
648
649 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
650 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
651
652 for (i = 0; i < num_rcvd; i++) {
653 page_info = get_rx_page_info(adapter, rxq_idx);
654 put_page(page_info->page);
655 memset(page_info, 0, sizeof(*page_info));
656 index_inc(&rxq_idx, rxq->len);
657 }
658 }
659
660 /*
661 * skb_fill_rx_data forms a complete skb for an ether frame
662 * indicated by rxcp.
663 */
664 static void skb_fill_rx_data(struct be_adapter *adapter,
665 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
666 {
667 struct be_queue_info *rxq = &adapter->rx_obj.q;
668 struct be_rx_page_info *page_info;
669 u16 rxq_idx, i, num_rcvd, j;
670 u32 pktsize, hdr_len, curr_frag_len, size;
671 u8 *start;
672
673 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
674 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
675 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
676
677 page_info = get_rx_page_info(adapter, rxq_idx);
678
679 start = page_address(page_info->page) + page_info->page_offset;
680 prefetch(start);
681
682 /* Copy data in the first descriptor of this completion */
683 curr_frag_len = min(pktsize, rx_frag_size);
684
685 /* Copy the header portion into skb_data */
686 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
687 memcpy(skb->data, start, hdr_len);
688 skb->len = curr_frag_len;
689 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
690 /* Complete packet has now been moved to data */
691 put_page(page_info->page);
692 skb->data_len = 0;
693 skb->tail += curr_frag_len;
694 } else {
695 skb_shinfo(skb)->nr_frags = 1;
696 skb_shinfo(skb)->frags[0].page = page_info->page;
697 skb_shinfo(skb)->frags[0].page_offset =
698 page_info->page_offset + hdr_len;
699 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
700 skb->data_len = curr_frag_len - hdr_len;
701 skb->tail += hdr_len;
702 }
703 memset(page_info, 0, sizeof(*page_info));
704
705 if (pktsize <= rx_frag_size) {
706 BUG_ON(num_rcvd != 1);
707 goto done;
708 }
709
710 /* More frags present for this completion */
711 size = pktsize;
712 for (i = 1, j = 0; i < num_rcvd; i++) {
713 size -= curr_frag_len;
714 index_inc(&rxq_idx, rxq->len);
715 page_info = get_rx_page_info(adapter, rxq_idx);
716
717 curr_frag_len = min(size, rx_frag_size);
718
719 /* Coalesce all frags from the same physical page in one slot */
720 if (page_info->page_offset == 0) {
721 /* Fresh page */
722 j++;
723 skb_shinfo(skb)->frags[j].page = page_info->page;
724 skb_shinfo(skb)->frags[j].page_offset =
725 page_info->page_offset;
726 skb_shinfo(skb)->frags[j].size = 0;
727 skb_shinfo(skb)->nr_frags++;
728 } else {
729 put_page(page_info->page);
730 }
731
732 skb_shinfo(skb)->frags[j].size += curr_frag_len;
733 skb->len += curr_frag_len;
734 skb->data_len += curr_frag_len;
735
736 memset(page_info, 0, sizeof(*page_info));
737 }
738 BUG_ON(j > MAX_SKB_FRAGS);
739
740 done:
741 be_rx_stats_update(adapter, pktsize, num_rcvd);
742 return;
743 }
744
745 /* Process the RX completion indicated by rxcp when GRO is disabled */
746 static void be_rx_compl_process(struct be_adapter *adapter,
747 struct be_eth_rx_compl *rxcp)
748 {
749 struct sk_buff *skb;
750 u32 vlanf, vid;
751 u8 vtm;
752
753 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
754 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
755
756 /* vlanf could be wrongly set in some cards.
757 * ignore if vtm is not set */
758 if ((adapter->cap == 0x400) && !vtm)
759 vlanf = 0;
760
761 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
762 if (!skb) {
763 if (net_ratelimit())
764 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
765 be_rx_compl_discard(adapter, rxcp);
766 return;
767 }
768
769 skb_reserve(skb, NET_IP_ALIGN);
770
771 skb_fill_rx_data(adapter, skb, rxcp);
772
773 if (do_pkt_csum(rxcp, adapter->rx_csum))
774 skb->ip_summed = CHECKSUM_NONE;
775 else
776 skb->ip_summed = CHECKSUM_UNNECESSARY;
777
778 skb->truesize = skb->len + sizeof(struct sk_buff);
779 skb->protocol = eth_type_trans(skb, adapter->netdev);
780 skb->dev = adapter->netdev;
781
782 if (vlanf) {
783 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
784 kfree_skb(skb);
785 return;
786 }
787 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
788 vid = be16_to_cpu(vid);
789 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
790 } else {
791 netif_receive_skb(skb);
792 }
793
794 return;
795 }
796
797 /* Process the RX completion indicated by rxcp when GRO is enabled */
798 static void be_rx_compl_process_gro(struct be_adapter *adapter,
799 struct be_eth_rx_compl *rxcp)
800 {
801 struct be_rx_page_info *page_info;
802 struct sk_buff *skb = NULL;
803 struct be_queue_info *rxq = &adapter->rx_obj.q;
804 struct be_eq_obj *eq_obj = &adapter->rx_eq;
805 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
806 u16 i, rxq_idx = 0, vid, j;
807 u8 vtm;
808
809 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
810 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
811 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
812 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
813 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
814
815 /* vlanf could be wrongly set in some cards.
816 * ignore if vtm is not set */
817 if ((adapter->cap == 0x400) && !vtm)
818 vlanf = 0;
819
820 skb = napi_get_frags(&eq_obj->napi);
821 if (!skb) {
822 be_rx_compl_discard(adapter, rxcp);
823 return;
824 }
825
826 remaining = pkt_size;
827 for (i = 0, j = -1; i < num_rcvd; i++) {
828 page_info = get_rx_page_info(adapter, rxq_idx);
829
830 curr_frag_len = min(remaining, rx_frag_size);
831
832 /* Coalesce all frags from the same physical page in one slot */
833 if (i == 0 || page_info->page_offset == 0) {
834 /* First frag or Fresh page */
835 j++;
836 skb_shinfo(skb)->frags[j].page = page_info->page;
837 skb_shinfo(skb)->frags[j].page_offset =
838 page_info->page_offset;
839 skb_shinfo(skb)->frags[j].size = 0;
840 } else {
841 put_page(page_info->page);
842 }
843 skb_shinfo(skb)->frags[j].size += curr_frag_len;
844
845 remaining -= curr_frag_len;
846 index_inc(&rxq_idx, rxq->len);
847 memset(page_info, 0, sizeof(*page_info));
848 }
849 BUG_ON(j > MAX_SKB_FRAGS);
850
851 skb_shinfo(skb)->nr_frags = j + 1;
852 skb->len = pkt_size;
853 skb->data_len = pkt_size;
854 skb->truesize += pkt_size;
855 skb->ip_summed = CHECKSUM_UNNECESSARY;
856
857 if (likely(!vlanf)) {
858 napi_gro_frags(&eq_obj->napi);
859 } else {
860 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
861 vid = be16_to_cpu(vid);
862
863 if (!adapter->vlan_grp || adapter->num_vlans == 0)
864 return;
865
866 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
867 }
868
869 be_rx_stats_update(adapter, pkt_size, num_rcvd);
870 return;
871 }
872
873 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
874 {
875 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
876
877 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
878 return NULL;
879
880 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
881
882 queue_tail_inc(&adapter->rx_obj.cq);
883 return rxcp;
884 }
885
886 /* To reset the valid bit, we need to reset the whole word as
887 * when walking the queue the valid entries are little-endian
888 * and invalid entries are host endian
889 */
890 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
891 {
892 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
893 }
894
895 static inline struct page *be_alloc_pages(u32 size)
896 {
897 gfp_t alloc_flags = GFP_ATOMIC;
898 u32 order = get_order(size);
899 if (order > 0)
900 alloc_flags |= __GFP_COMP;
901 return alloc_pages(alloc_flags, order);
902 }
903
904 /*
905 * Allocate a page, split it to fragments of size rx_frag_size and post as
906 * receive buffers to BE
907 */
908 static void be_post_rx_frags(struct be_adapter *adapter)
909 {
910 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
911 struct be_rx_page_info *page_info = NULL;
912 struct be_queue_info *rxq = &adapter->rx_obj.q;
913 struct page *pagep = NULL;
914 struct be_eth_rx_d *rxd;
915 u64 page_dmaaddr = 0, frag_dmaaddr;
916 u32 posted, page_offset = 0;
917
918 page_info = &page_info_tbl[rxq->head];
919 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
920 if (!pagep) {
921 pagep = be_alloc_pages(adapter->big_page_size);
922 if (unlikely(!pagep)) {
923 drvr_stats(adapter)->be_ethrx_post_fail++;
924 break;
925 }
926 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
927 adapter->big_page_size,
928 PCI_DMA_FROMDEVICE);
929 page_info->page_offset = 0;
930 } else {
931 get_page(pagep);
932 page_info->page_offset = page_offset + rx_frag_size;
933 }
934 page_offset = page_info->page_offset;
935 page_info->page = pagep;
936 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
937 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
938
939 rxd = queue_head_node(rxq);
940 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
941 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
942 queue_head_inc(rxq);
943
944 /* Any space left in the current big page for another frag? */
945 if ((page_offset + rx_frag_size + rx_frag_size) >
946 adapter->big_page_size) {
947 pagep = NULL;
948 page_info->last_page_user = true;
949 }
950 page_info = &page_info_tbl[rxq->head];
951 }
952 if (pagep)
953 page_info->last_page_user = true;
954
955 if (posted) {
956 atomic_add(posted, &rxq->used);
957 be_rxq_notify(adapter, rxq->id, posted);
958 } else if (atomic_read(&rxq->used) == 0) {
959 /* Let be_worker replenish when memory is available */
960 adapter->rx_post_starved = true;
961 }
962
963 return;
964 }
965
966 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
967 {
968 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
969
970 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
971 return NULL;
972
973 be_dws_le_to_cpu(txcp, sizeof(*txcp));
974
975 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
976
977 queue_tail_inc(tx_cq);
978 return txcp;
979 }
980
981 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
982 {
983 struct be_queue_info *txq = &adapter->tx_obj.q;
984 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
985 struct sk_buff *sent_skb;
986 u16 cur_index, num_wrbs = 0;
987
988 cur_index = txq->tail;
989 sent_skb = sent_skbs[cur_index];
990 BUG_ON(!sent_skb);
991 sent_skbs[cur_index] = NULL;
992
993 do {
994 cur_index = txq->tail;
995 num_wrbs++;
996 queue_tail_inc(txq);
997 } while (cur_index != last_index);
998
999 atomic_sub(num_wrbs, &txq->used);
1000 skb_dma_unmap(&adapter->pdev->dev, sent_skb, DMA_TO_DEVICE);
1001 kfree_skb(sent_skb);
1002 }
1003
1004 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1005 {
1006 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1007
1008 if (!eqe->evt)
1009 return NULL;
1010
1011 eqe->evt = le32_to_cpu(eqe->evt);
1012 queue_tail_inc(&eq_obj->q);
1013 return eqe;
1014 }
1015
1016 static int event_handle(struct be_adapter *adapter,
1017 struct be_eq_obj *eq_obj)
1018 {
1019 struct be_eq_entry *eqe;
1020 u16 num = 0;
1021
1022 while ((eqe = event_get(eq_obj)) != NULL) {
1023 eqe->evt = 0;
1024 num++;
1025 }
1026
1027 /* Deal with any spurious interrupts that come
1028 * without events
1029 */
1030 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1031 if (num)
1032 napi_schedule(&eq_obj->napi);
1033
1034 return num;
1035 }
1036
1037 /* Just read and notify events without processing them.
1038 * Used at the time of destroying event queues */
1039 static void be_eq_clean(struct be_adapter *adapter,
1040 struct be_eq_obj *eq_obj)
1041 {
1042 struct be_eq_entry *eqe;
1043 u16 num = 0;
1044
1045 while ((eqe = event_get(eq_obj)) != NULL) {
1046 eqe->evt = 0;
1047 num++;
1048 }
1049
1050 if (num)
1051 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1052 }
1053
1054 static void be_rx_q_clean(struct be_adapter *adapter)
1055 {
1056 struct be_rx_page_info *page_info;
1057 struct be_queue_info *rxq = &adapter->rx_obj.q;
1058 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1059 struct be_eth_rx_compl *rxcp;
1060 u16 tail;
1061
1062 /* First cleanup pending rx completions */
1063 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1064 be_rx_compl_discard(adapter, rxcp);
1065 be_rx_compl_reset(rxcp);
1066 be_cq_notify(adapter, rx_cq->id, true, 1);
1067 }
1068
1069 /* Then free posted rx buffer that were not used */
1070 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1071 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1072 page_info = get_rx_page_info(adapter, tail);
1073 put_page(page_info->page);
1074 memset(page_info, 0, sizeof(*page_info));
1075 }
1076 BUG_ON(atomic_read(&rxq->used));
1077 }
1078
1079 static void be_tx_compl_clean(struct be_adapter *adapter)
1080 {
1081 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1082 struct be_queue_info *txq = &adapter->tx_obj.q;
1083 struct be_eth_tx_compl *txcp;
1084 u16 end_idx, cmpl = 0, timeo = 0;
1085
1086 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1087 do {
1088 while ((txcp = be_tx_compl_get(tx_cq))) {
1089 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1090 wrb_index, txcp);
1091 be_tx_compl_process(adapter, end_idx);
1092 cmpl++;
1093 }
1094 if (cmpl) {
1095 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1096 cmpl = 0;
1097 }
1098
1099 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1100 break;
1101
1102 mdelay(1);
1103 } while (true);
1104
1105 if (atomic_read(&txq->used))
1106 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1107 atomic_read(&txq->used));
1108 }
1109
1110 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1111 {
1112 struct be_queue_info *q;
1113
1114 q = &adapter->mcc_obj.q;
1115 if (q->created)
1116 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1117 be_queue_free(adapter, q);
1118
1119 q = &adapter->mcc_obj.cq;
1120 if (q->created)
1121 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1122 be_queue_free(adapter, q);
1123 }
1124
1125 /* Must be called only after TX qs are created as MCC shares TX EQ */
1126 static int be_mcc_queues_create(struct be_adapter *adapter)
1127 {
1128 struct be_queue_info *q, *cq;
1129
1130 /* Alloc MCC compl queue */
1131 cq = &adapter->mcc_obj.cq;
1132 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1133 sizeof(struct be_mcc_compl)))
1134 goto err;
1135
1136 /* Ask BE to create MCC compl queue; share TX's eq */
1137 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1138 goto mcc_cq_free;
1139
1140 /* Alloc MCC queue */
1141 q = &adapter->mcc_obj.q;
1142 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1143 goto mcc_cq_destroy;
1144
1145 /* Ask BE to create MCC queue */
1146 if (be_cmd_mccq_create(adapter, q, cq))
1147 goto mcc_q_free;
1148
1149 return 0;
1150
1151 mcc_q_free:
1152 be_queue_free(adapter, q);
1153 mcc_cq_destroy:
1154 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1155 mcc_cq_free:
1156 be_queue_free(adapter, cq);
1157 err:
1158 return -1;
1159 }
1160
1161 static void be_tx_queues_destroy(struct be_adapter *adapter)
1162 {
1163 struct be_queue_info *q;
1164
1165 q = &adapter->tx_obj.q;
1166 if (q->created)
1167 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1168 be_queue_free(adapter, q);
1169
1170 q = &adapter->tx_obj.cq;
1171 if (q->created)
1172 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1173 be_queue_free(adapter, q);
1174
1175 /* Clear any residual events */
1176 be_eq_clean(adapter, &adapter->tx_eq);
1177
1178 q = &adapter->tx_eq.q;
1179 if (q->created)
1180 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1181 be_queue_free(adapter, q);
1182 }
1183
1184 static int be_tx_queues_create(struct be_adapter *adapter)
1185 {
1186 struct be_queue_info *eq, *q, *cq;
1187
1188 adapter->tx_eq.max_eqd = 0;
1189 adapter->tx_eq.min_eqd = 0;
1190 adapter->tx_eq.cur_eqd = 96;
1191 adapter->tx_eq.enable_aic = false;
1192 /* Alloc Tx Event queue */
1193 eq = &adapter->tx_eq.q;
1194 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1195 return -1;
1196
1197 /* Ask BE to create Tx Event queue */
1198 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1199 goto tx_eq_free;
1200 /* Alloc TX eth compl queue */
1201 cq = &adapter->tx_obj.cq;
1202 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1203 sizeof(struct be_eth_tx_compl)))
1204 goto tx_eq_destroy;
1205
1206 /* Ask BE to create Tx eth compl queue */
1207 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1208 goto tx_cq_free;
1209
1210 /* Alloc TX eth queue */
1211 q = &adapter->tx_obj.q;
1212 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1213 goto tx_cq_destroy;
1214
1215 /* Ask BE to create Tx eth queue */
1216 if (be_cmd_txq_create(adapter, q, cq))
1217 goto tx_q_free;
1218 return 0;
1219
1220 tx_q_free:
1221 be_queue_free(adapter, q);
1222 tx_cq_destroy:
1223 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1224 tx_cq_free:
1225 be_queue_free(adapter, cq);
1226 tx_eq_destroy:
1227 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1228 tx_eq_free:
1229 be_queue_free(adapter, eq);
1230 return -1;
1231 }
1232
1233 static void be_rx_queues_destroy(struct be_adapter *adapter)
1234 {
1235 struct be_queue_info *q;
1236
1237 q = &adapter->rx_obj.q;
1238 if (q->created) {
1239 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1240 be_rx_q_clean(adapter);
1241 }
1242 be_queue_free(adapter, q);
1243
1244 q = &adapter->rx_obj.cq;
1245 if (q->created)
1246 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1247 be_queue_free(adapter, q);
1248
1249 /* Clear any residual events */
1250 be_eq_clean(adapter, &adapter->rx_eq);
1251
1252 q = &adapter->rx_eq.q;
1253 if (q->created)
1254 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1255 be_queue_free(adapter, q);
1256 }
1257
1258 static int be_rx_queues_create(struct be_adapter *adapter)
1259 {
1260 struct be_queue_info *eq, *q, *cq;
1261 int rc;
1262
1263 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1264 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1265 adapter->rx_eq.min_eqd = 0;
1266 adapter->rx_eq.cur_eqd = 0;
1267 adapter->rx_eq.enable_aic = true;
1268
1269 /* Alloc Rx Event queue */
1270 eq = &adapter->rx_eq.q;
1271 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1272 sizeof(struct be_eq_entry));
1273 if (rc)
1274 return rc;
1275
1276 /* Ask BE to create Rx Event queue */
1277 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1278 if (rc)
1279 goto rx_eq_free;
1280
1281 /* Alloc RX eth compl queue */
1282 cq = &adapter->rx_obj.cq;
1283 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1284 sizeof(struct be_eth_rx_compl));
1285 if (rc)
1286 goto rx_eq_destroy;
1287
1288 /* Ask BE to create Rx eth compl queue */
1289 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1290 if (rc)
1291 goto rx_cq_free;
1292
1293 /* Alloc RX eth queue */
1294 q = &adapter->rx_obj.q;
1295 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1296 if (rc)
1297 goto rx_cq_destroy;
1298
1299 /* Ask BE to create Rx eth queue */
1300 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1301 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1302 if (rc)
1303 goto rx_q_free;
1304
1305 return 0;
1306 rx_q_free:
1307 be_queue_free(adapter, q);
1308 rx_cq_destroy:
1309 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1310 rx_cq_free:
1311 be_queue_free(adapter, cq);
1312 rx_eq_destroy:
1313 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1314 rx_eq_free:
1315 be_queue_free(adapter, eq);
1316 return rc;
1317 }
1318
1319 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1320 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1321 {
1322 return eq_id - 8 * be_pci_func(adapter);
1323 }
1324
1325 static irqreturn_t be_intx(int irq, void *dev)
1326 {
1327 struct be_adapter *adapter = dev;
1328 int isr;
1329
1330 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1331 be_pci_func(adapter) * CEV_ISR_SIZE);
1332 if (!isr)
1333 return IRQ_NONE;
1334
1335 event_handle(adapter, &adapter->tx_eq);
1336 event_handle(adapter, &adapter->rx_eq);
1337
1338 return IRQ_HANDLED;
1339 }
1340
1341 static irqreturn_t be_msix_rx(int irq, void *dev)
1342 {
1343 struct be_adapter *adapter = dev;
1344
1345 event_handle(adapter, &adapter->rx_eq);
1346
1347 return IRQ_HANDLED;
1348 }
1349
1350 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1351 {
1352 struct be_adapter *adapter = dev;
1353
1354 event_handle(adapter, &adapter->tx_eq);
1355
1356 return IRQ_HANDLED;
1357 }
1358
1359 static inline bool do_gro(struct be_adapter *adapter,
1360 struct be_eth_rx_compl *rxcp)
1361 {
1362 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1363 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1364
1365 if (err)
1366 drvr_stats(adapter)->be_rxcp_err++;
1367
1368 return (tcp_frame && !err) ? true : false;
1369 }
1370
1371 int be_poll_rx(struct napi_struct *napi, int budget)
1372 {
1373 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1374 struct be_adapter *adapter =
1375 container_of(rx_eq, struct be_adapter, rx_eq);
1376 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1377 struct be_eth_rx_compl *rxcp;
1378 u32 work_done;
1379
1380 for (work_done = 0; work_done < budget; work_done++) {
1381 rxcp = be_rx_compl_get(adapter);
1382 if (!rxcp)
1383 break;
1384
1385 if (do_gro(adapter, rxcp))
1386 be_rx_compl_process_gro(adapter, rxcp);
1387 else
1388 be_rx_compl_process(adapter, rxcp);
1389
1390 be_rx_compl_reset(rxcp);
1391 }
1392
1393 /* Refill the queue */
1394 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1395 be_post_rx_frags(adapter);
1396
1397 /* All consumed */
1398 if (work_done < budget) {
1399 napi_complete(napi);
1400 be_cq_notify(adapter, rx_cq->id, true, work_done);
1401 } else {
1402 /* More to be consumed; continue with interrupts disabled */
1403 be_cq_notify(adapter, rx_cq->id, false, work_done);
1404 }
1405 return work_done;
1406 }
1407
1408 void be_process_tx(struct be_adapter *adapter)
1409 {
1410 struct be_queue_info *txq = &adapter->tx_obj.q;
1411 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1412 struct be_eth_tx_compl *txcp;
1413 u32 num_cmpl = 0;
1414 u16 end_idx;
1415
1416 while ((txcp = be_tx_compl_get(tx_cq))) {
1417 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1418 wrb_index, txcp);
1419 be_tx_compl_process(adapter, end_idx);
1420 num_cmpl++;
1421 }
1422
1423 if (num_cmpl) {
1424 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1425
1426 /* As Tx wrbs have been freed up, wake up netdev queue if
1427 * it was stopped due to lack of tx wrbs.
1428 */
1429 if (netif_queue_stopped(adapter->netdev) &&
1430 atomic_read(&txq->used) < txq->len / 2) {
1431 netif_wake_queue(adapter->netdev);
1432 }
1433
1434 drvr_stats(adapter)->be_tx_events++;
1435 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1436 }
1437 }
1438
1439 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1440 * For TX/MCC we don't honour budget; consume everything
1441 */
1442 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1443 {
1444 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1445 struct be_adapter *adapter =
1446 container_of(tx_eq, struct be_adapter, tx_eq);
1447
1448 napi_complete(napi);
1449
1450 be_process_tx(adapter);
1451
1452 be_process_mcc(adapter);
1453
1454 return 1;
1455 }
1456
1457 static void be_worker(struct work_struct *work)
1458 {
1459 struct be_adapter *adapter =
1460 container_of(work, struct be_adapter, work.work);
1461
1462 be_cmd_get_stats(adapter, &adapter->stats.cmd);
1463
1464 /* Set EQ delay */
1465 be_rx_eqd_update(adapter);
1466
1467 be_tx_rate_update(adapter);
1468 be_rx_rate_update(adapter);
1469
1470 if (adapter->rx_post_starved) {
1471 adapter->rx_post_starved = false;
1472 be_post_rx_frags(adapter);
1473 }
1474
1475 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1476 }
1477
1478 static void be_msix_enable(struct be_adapter *adapter)
1479 {
1480 int i, status;
1481
1482 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1483 adapter->msix_entries[i].entry = i;
1484
1485 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1486 BE_NUM_MSIX_VECTORS);
1487 if (status == 0)
1488 adapter->msix_enabled = true;
1489 return;
1490 }
1491
1492 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1493 {
1494 return adapter->msix_entries[
1495 be_evt_bit_get(adapter, eq_id)].vector;
1496 }
1497
1498 static int be_request_irq(struct be_adapter *adapter,
1499 struct be_eq_obj *eq_obj,
1500 void *handler, char *desc)
1501 {
1502 struct net_device *netdev = adapter->netdev;
1503 int vec;
1504
1505 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1506 vec = be_msix_vec_get(adapter, eq_obj->q.id);
1507 return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1508 }
1509
1510 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1511 {
1512 int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1513 free_irq(vec, adapter);
1514 }
1515
1516 static int be_msix_register(struct be_adapter *adapter)
1517 {
1518 int status;
1519
1520 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1521 if (status)
1522 goto err;
1523
1524 status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1525 if (status)
1526 goto free_tx_irq;
1527
1528 return 0;
1529
1530 free_tx_irq:
1531 be_free_irq(adapter, &adapter->tx_eq);
1532 err:
1533 dev_warn(&adapter->pdev->dev,
1534 "MSIX Request IRQ failed - err %d\n", status);
1535 pci_disable_msix(adapter->pdev);
1536 adapter->msix_enabled = false;
1537 return status;
1538 }
1539
1540 static int be_irq_register(struct be_adapter *adapter)
1541 {
1542 struct net_device *netdev = adapter->netdev;
1543 int status;
1544
1545 if (adapter->msix_enabled) {
1546 status = be_msix_register(adapter);
1547 if (status == 0)
1548 goto done;
1549 }
1550
1551 /* INTx */
1552 netdev->irq = adapter->pdev->irq;
1553 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1554 adapter);
1555 if (status) {
1556 dev_err(&adapter->pdev->dev,
1557 "INTx request IRQ failed - err %d\n", status);
1558 return status;
1559 }
1560 done:
1561 adapter->isr_registered = true;
1562 return 0;
1563 }
1564
1565 static void be_irq_unregister(struct be_adapter *adapter)
1566 {
1567 struct net_device *netdev = adapter->netdev;
1568
1569 if (!adapter->isr_registered)
1570 return;
1571
1572 /* INTx */
1573 if (!adapter->msix_enabled) {
1574 free_irq(netdev->irq, adapter);
1575 goto done;
1576 }
1577
1578 /* MSIx */
1579 be_free_irq(adapter, &adapter->tx_eq);
1580 be_free_irq(adapter, &adapter->rx_eq);
1581 done:
1582 adapter->isr_registered = false;
1583 return;
1584 }
1585
1586 static int be_open(struct net_device *netdev)
1587 {
1588 struct be_adapter *adapter = netdev_priv(netdev);
1589 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1590 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1591 bool link_up;
1592 int status;
1593
1594 /* First time posting */
1595 be_post_rx_frags(adapter);
1596
1597 napi_enable(&rx_eq->napi);
1598 napi_enable(&tx_eq->napi);
1599
1600 be_irq_register(adapter);
1601
1602 be_intr_set(adapter, true);
1603
1604 /* The evt queues are created in unarmed state; arm them */
1605 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1606 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1607
1608 /* Rx compl queue may be in unarmed state; rearm it */
1609 be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1610
1611 status = be_cmd_link_status_query(adapter, &link_up);
1612 if (status)
1613 return status;
1614 be_link_status_update(adapter, link_up);
1615
1616 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1617 return 0;
1618 }
1619
1620 static int be_setup(struct be_adapter *adapter)
1621 {
1622 struct net_device *netdev = adapter->netdev;
1623 u32 if_flags;
1624 int status;
1625
1626 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1627 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1628 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1629 status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
1630 false/* pmac_invalid */, &adapter->if_handle,
1631 &adapter->pmac_id);
1632 if (status != 0)
1633 goto do_none;
1634
1635
1636 status = be_tx_queues_create(adapter);
1637 if (status != 0)
1638 goto if_destroy;
1639
1640 status = be_rx_queues_create(adapter);
1641 if (status != 0)
1642 goto tx_qs_destroy;
1643
1644 status = be_mcc_queues_create(adapter);
1645 if (status != 0)
1646 goto rx_qs_destroy;
1647
1648 status = be_vid_config(adapter);
1649 if (status != 0)
1650 goto mccqs_destroy;
1651
1652 status = be_cmd_set_flow_control(adapter, true, true);
1653 if (status != 0)
1654 goto mccqs_destroy;
1655 return 0;
1656
1657 mccqs_destroy:
1658 be_mcc_queues_destroy(adapter);
1659 rx_qs_destroy:
1660 be_rx_queues_destroy(adapter);
1661 tx_qs_destroy:
1662 be_tx_queues_destroy(adapter);
1663 if_destroy:
1664 be_cmd_if_destroy(adapter, adapter->if_handle);
1665 do_none:
1666 return status;
1667 }
1668
1669 static int be_clear(struct be_adapter *adapter)
1670 {
1671 be_mcc_queues_destroy(adapter);
1672 be_rx_queues_destroy(adapter);
1673 be_tx_queues_destroy(adapter);
1674
1675 be_cmd_if_destroy(adapter, adapter->if_handle);
1676
1677 return 0;
1678 }
1679
1680 static int be_close(struct net_device *netdev)
1681 {
1682 struct be_adapter *adapter = netdev_priv(netdev);
1683 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1684 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1685 int vec;
1686
1687 cancel_delayed_work_sync(&adapter->work);
1688
1689 netif_stop_queue(netdev);
1690 netif_carrier_off(netdev);
1691 adapter->link_up = false;
1692
1693 be_intr_set(adapter, false);
1694
1695 if (adapter->msix_enabled) {
1696 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1697 synchronize_irq(vec);
1698 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1699 synchronize_irq(vec);
1700 } else {
1701 synchronize_irq(netdev->irq);
1702 }
1703 be_irq_unregister(adapter);
1704
1705 napi_disable(&rx_eq->napi);
1706 napi_disable(&tx_eq->napi);
1707
1708 /* Wait for all pending tx completions to arrive so that
1709 * all tx skbs are freed.
1710 */
1711 be_tx_compl_clean(adapter);
1712
1713 return 0;
1714 }
1715
1716 #define FW_FILE_HDR_SIGN "ServerEngines Corp. "
1717 char flash_cookie[2][16] = {"*** SE FLAS",
1718 "H DIRECTORY *** "};
1719 static int be_flash_image(struct be_adapter *adapter,
1720 const struct firmware *fw,
1721 struct be_dma_mem *flash_cmd, u32 flash_type)
1722 {
1723 int status;
1724 u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1725 int num_bytes;
1726 const u8 *p = fw->data;
1727 struct be_cmd_write_flashrom *req = flash_cmd->va;
1728
1729 switch (flash_type) {
1730 case FLASHROM_TYPE_ISCSI_ACTIVE:
1731 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1732 image_size = FLASH_IMAGE_MAX_SIZE;
1733 break;
1734 case FLASHROM_TYPE_ISCSI_BACKUP:
1735 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1736 image_size = FLASH_IMAGE_MAX_SIZE;
1737 break;
1738 case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1739 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1740 image_size = FLASH_IMAGE_MAX_SIZE;
1741 break;
1742 case FLASHROM_TYPE_FCOE_FW_BACKUP:
1743 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1744 image_size = FLASH_IMAGE_MAX_SIZE;
1745 break;
1746 case FLASHROM_TYPE_BIOS:
1747 image_offset = FLASH_iSCSI_BIOS_START;
1748 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1749 break;
1750 case FLASHROM_TYPE_FCOE_BIOS:
1751 image_offset = FLASH_FCoE_BIOS_START;
1752 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1753 break;
1754 case FLASHROM_TYPE_PXE_BIOS:
1755 image_offset = FLASH_PXE_BIOS_START;
1756 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1757 break;
1758 default:
1759 return 0;
1760 }
1761
1762 p += sizeof(struct flash_file_hdr) + image_offset;
1763 if (p + image_size > fw->data + fw->size)
1764 return -1;
1765
1766 total_bytes = image_size;
1767
1768 while (total_bytes) {
1769 if (total_bytes > 32*1024)
1770 num_bytes = 32*1024;
1771 else
1772 num_bytes = total_bytes;
1773 total_bytes -= num_bytes;
1774
1775 if (!total_bytes)
1776 flash_op = FLASHROM_OPER_FLASH;
1777 else
1778 flash_op = FLASHROM_OPER_SAVE;
1779 memcpy(req->params.data_buf, p, num_bytes);
1780 p += num_bytes;
1781 status = be_cmd_write_flashrom(adapter, flash_cmd,
1782 flash_type, flash_op, num_bytes);
1783 if (status) {
1784 dev_err(&adapter->pdev->dev,
1785 "cmd to write to flash rom failed. type/op %d/%d\n",
1786 flash_type, flash_op);
1787 return -1;
1788 }
1789 yield();
1790 }
1791
1792 return 0;
1793 }
1794
1795 int be_load_fw(struct be_adapter *adapter, u8 *func)
1796 {
1797 char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1798 const struct firmware *fw;
1799 struct flash_file_hdr *fhdr;
1800 struct flash_section_info *fsec = NULL;
1801 struct be_dma_mem flash_cmd;
1802 int status;
1803 const u8 *p;
1804 bool entry_found = false;
1805 int flash_type;
1806 char fw_ver[FW_VER_LEN];
1807 char fw_cfg;
1808
1809 status = be_cmd_get_fw_ver(adapter, fw_ver);
1810 if (status)
1811 return status;
1812
1813 fw_cfg = *(fw_ver + 2);
1814 if (fw_cfg == '0')
1815 fw_cfg = '1';
1816 strcpy(fw_file, func);
1817
1818 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1819 if (status)
1820 goto fw_exit;
1821
1822 p = fw->data;
1823 fhdr = (struct flash_file_hdr *) p;
1824 if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1825 dev_err(&adapter->pdev->dev,
1826 "Firmware(%s) load error (signature did not match)\n",
1827 fw_file);
1828 status = -1;
1829 goto fw_exit;
1830 }
1831
1832 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1833
1834 p += sizeof(struct flash_file_hdr);
1835 while (p < (fw->data + fw->size)) {
1836 fsec = (struct flash_section_info *)p;
1837 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1838 entry_found = true;
1839 break;
1840 }
1841 p += 32;
1842 }
1843
1844 if (!entry_found) {
1845 status = -1;
1846 dev_err(&adapter->pdev->dev,
1847 "Flash cookie not found in firmware image\n");
1848 goto fw_exit;
1849 }
1850
1851 flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1852 flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1853 &flash_cmd.dma);
1854 if (!flash_cmd.va) {
1855 status = -ENOMEM;
1856 dev_err(&adapter->pdev->dev,
1857 "Memory allocation failure while flashing\n");
1858 goto fw_exit;
1859 }
1860
1861 for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1862 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1863 status = be_flash_image(adapter, fw, &flash_cmd,
1864 flash_type);
1865 if (status)
1866 break;
1867 }
1868
1869 pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1870 flash_cmd.dma);
1871 if (status) {
1872 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1873 goto fw_exit;
1874 }
1875
1876 dev_info(&adapter->pdev->dev, "Firmware flashed succesfully\n");
1877
1878 fw_exit:
1879 release_firmware(fw);
1880 return status;
1881 }
1882
1883 static struct net_device_ops be_netdev_ops = {
1884 .ndo_open = be_open,
1885 .ndo_stop = be_close,
1886 .ndo_start_xmit = be_xmit,
1887 .ndo_get_stats = be_get_stats,
1888 .ndo_set_rx_mode = be_set_multicast_list,
1889 .ndo_set_mac_address = be_mac_addr_set,
1890 .ndo_change_mtu = be_change_mtu,
1891 .ndo_validate_addr = eth_validate_addr,
1892 .ndo_vlan_rx_register = be_vlan_register,
1893 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1894 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1895 };
1896
1897 static void be_netdev_init(struct net_device *netdev)
1898 {
1899 struct be_adapter *adapter = netdev_priv(netdev);
1900
1901 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1902 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
1903 NETIF_F_GRO;
1904
1905 netdev->flags |= IFF_MULTICAST;
1906
1907 adapter->rx_csum = true;
1908
1909 netif_set_gso_max_size(netdev, 65535);
1910
1911 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1912
1913 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1914
1915 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1916 BE_NAPI_WEIGHT);
1917 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1918 BE_NAPI_WEIGHT);
1919
1920 netif_carrier_off(netdev);
1921 netif_stop_queue(netdev);
1922 }
1923
1924 static void be_unmap_pci_bars(struct be_adapter *adapter)
1925 {
1926 if (adapter->csr)
1927 iounmap(adapter->csr);
1928 if (adapter->db)
1929 iounmap(adapter->db);
1930 if (adapter->pcicfg)
1931 iounmap(adapter->pcicfg);
1932 }
1933
1934 static int be_map_pci_bars(struct be_adapter *adapter)
1935 {
1936 u8 __iomem *addr;
1937
1938 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1939 pci_resource_len(adapter->pdev, 2));
1940 if (addr == NULL)
1941 return -ENOMEM;
1942 adapter->csr = addr;
1943
1944 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1945 128 * 1024);
1946 if (addr == NULL)
1947 goto pci_map_err;
1948 adapter->db = addr;
1949
1950 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1951 pci_resource_len(adapter->pdev, 1));
1952 if (addr == NULL)
1953 goto pci_map_err;
1954 adapter->pcicfg = addr;
1955
1956 return 0;
1957 pci_map_err:
1958 be_unmap_pci_bars(adapter);
1959 return -ENOMEM;
1960 }
1961
1962
1963 static void be_ctrl_cleanup(struct be_adapter *adapter)
1964 {
1965 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1966
1967 be_unmap_pci_bars(adapter);
1968
1969 if (mem->va)
1970 pci_free_consistent(adapter->pdev, mem->size,
1971 mem->va, mem->dma);
1972 }
1973
1974 static int be_ctrl_init(struct be_adapter *adapter)
1975 {
1976 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1977 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1978 int status;
1979
1980 status = be_map_pci_bars(adapter);
1981 if (status)
1982 return status;
1983
1984 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1985 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1986 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1987 if (!mbox_mem_alloc->va) {
1988 be_unmap_pci_bars(adapter);
1989 return -1;
1990 }
1991 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1992 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1993 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1994 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1995 spin_lock_init(&adapter->mbox_lock);
1996 spin_lock_init(&adapter->mcc_lock);
1997 spin_lock_init(&adapter->mcc_cq_lock);
1998
1999 return 0;
2000 }
2001
2002 static void be_stats_cleanup(struct be_adapter *adapter)
2003 {
2004 struct be_stats_obj *stats = &adapter->stats;
2005 struct be_dma_mem *cmd = &stats->cmd;
2006
2007 if (cmd->va)
2008 pci_free_consistent(adapter->pdev, cmd->size,
2009 cmd->va, cmd->dma);
2010 }
2011
2012 static int be_stats_init(struct be_adapter *adapter)
2013 {
2014 struct be_stats_obj *stats = &adapter->stats;
2015 struct be_dma_mem *cmd = &stats->cmd;
2016
2017 cmd->size = sizeof(struct be_cmd_req_get_stats);
2018 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2019 if (cmd->va == NULL)
2020 return -1;
2021 return 0;
2022 }
2023
2024 static void __devexit be_remove(struct pci_dev *pdev)
2025 {
2026 struct be_adapter *adapter = pci_get_drvdata(pdev);
2027 if (!adapter)
2028 return;
2029
2030 unregister_netdev(adapter->netdev);
2031
2032 be_clear(adapter);
2033
2034 be_stats_cleanup(adapter);
2035
2036 be_ctrl_cleanup(adapter);
2037
2038 if (adapter->msix_enabled) {
2039 pci_disable_msix(adapter->pdev);
2040 adapter->msix_enabled = false;
2041 }
2042
2043 pci_set_drvdata(pdev, NULL);
2044 pci_release_regions(pdev);
2045 pci_disable_device(pdev);
2046
2047 free_netdev(adapter->netdev);
2048 }
2049
2050 static int be_hw_up(struct be_adapter *adapter)
2051 {
2052 int status;
2053
2054 status = be_cmd_POST(adapter);
2055 if (status)
2056 return status;
2057
2058 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2059 if (status)
2060 return status;
2061
2062 status = be_cmd_query_fw_cfg(adapter,
2063 &adapter->port_num, &adapter->cap);
2064 return status;
2065 }
2066
2067 static int __devinit be_probe(struct pci_dev *pdev,
2068 const struct pci_device_id *pdev_id)
2069 {
2070 int status = 0;
2071 struct be_adapter *adapter;
2072 struct net_device *netdev;
2073 u8 mac[ETH_ALEN];
2074
2075 status = pci_enable_device(pdev);
2076 if (status)
2077 goto do_none;
2078
2079 status = pci_request_regions(pdev, DRV_NAME);
2080 if (status)
2081 goto disable_dev;
2082 pci_set_master(pdev);
2083
2084 netdev = alloc_etherdev(sizeof(struct be_adapter));
2085 if (netdev == NULL) {
2086 status = -ENOMEM;
2087 goto rel_reg;
2088 }
2089 adapter = netdev_priv(netdev);
2090 adapter->pdev = pdev;
2091 pci_set_drvdata(pdev, adapter);
2092 adapter->netdev = netdev;
2093
2094 be_msix_enable(adapter);
2095
2096 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2097 if (!status) {
2098 netdev->features |= NETIF_F_HIGHDMA;
2099 } else {
2100 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2101 if (status) {
2102 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2103 goto free_netdev;
2104 }
2105 }
2106
2107 status = be_ctrl_init(adapter);
2108 if (status)
2109 goto free_netdev;
2110
2111 status = be_cmd_reset_function(adapter);
2112 if (status)
2113 goto ctrl_clean;
2114
2115 status = be_stats_init(adapter);
2116 if (status)
2117 goto ctrl_clean;
2118
2119 status = be_hw_up(adapter);
2120 if (status)
2121 goto stats_clean;
2122
2123 status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
2124 true /* permanent */, 0);
2125 if (status)
2126 goto stats_clean;
2127 memcpy(netdev->dev_addr, mac, ETH_ALEN);
2128
2129 INIT_DELAYED_WORK(&adapter->work, be_worker);
2130 be_netdev_init(netdev);
2131 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
2132
2133 status = be_setup(adapter);
2134 if (status)
2135 goto stats_clean;
2136 status = register_netdev(netdev);
2137 if (status != 0)
2138 goto unsetup;
2139
2140 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2141 return 0;
2142
2143 unsetup:
2144 be_clear(adapter);
2145 stats_clean:
2146 be_stats_cleanup(adapter);
2147 ctrl_clean:
2148 be_ctrl_cleanup(adapter);
2149 free_netdev:
2150 free_netdev(adapter->netdev);
2151 rel_reg:
2152 pci_release_regions(pdev);
2153 disable_dev:
2154 pci_disable_device(pdev);
2155 do_none:
2156 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2157 return status;
2158 }
2159
2160 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2161 {
2162 struct be_adapter *adapter = pci_get_drvdata(pdev);
2163 struct net_device *netdev = adapter->netdev;
2164
2165 netif_device_detach(netdev);
2166 if (netif_running(netdev)) {
2167 rtnl_lock();
2168 be_close(netdev);
2169 rtnl_unlock();
2170 }
2171 be_clear(adapter);
2172
2173 pci_save_state(pdev);
2174 pci_disable_device(pdev);
2175 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2176 return 0;
2177 }
2178
2179 static int be_resume(struct pci_dev *pdev)
2180 {
2181 int status = 0;
2182 struct be_adapter *adapter = pci_get_drvdata(pdev);
2183 struct net_device *netdev = adapter->netdev;
2184
2185 netif_device_detach(netdev);
2186
2187 status = pci_enable_device(pdev);
2188 if (status)
2189 return status;
2190
2191 pci_set_power_state(pdev, 0);
2192 pci_restore_state(pdev);
2193
2194 be_setup(adapter);
2195 if (netif_running(netdev)) {
2196 rtnl_lock();
2197 be_open(netdev);
2198 rtnl_unlock();
2199 }
2200 netif_device_attach(netdev);
2201 return 0;
2202 }
2203
2204 static struct pci_driver be_driver = {
2205 .name = DRV_NAME,
2206 .id_table = be_dev_ids,
2207 .probe = be_probe,
2208 .remove = be_remove,
2209 .suspend = be_suspend,
2210 .resume = be_resume
2211 };
2212
2213 static int __init be_init_module(void)
2214 {
2215 if (rx_frag_size != 8192 && rx_frag_size != 4096
2216 && rx_frag_size != 2048) {
2217 printk(KERN_WARNING DRV_NAME
2218 " : Module param rx_frag_size must be 2048/4096/8192."
2219 " Using 2048\n");
2220 rx_frag_size = 2048;
2221 }
2222
2223 return pci_register_driver(&be_driver);
2224 }
2225 module_init(be_init_module);
2226
2227 static void __exit be_exit_module(void)
2228 {
2229 pci_unregister_driver(&be_driver);
2230 }
2231 module_exit(be_exit_module);
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