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be2net: Add be_rx_polls counter
[linux-2.6/linux-2.6-openrd.git] / drivers / net / benet / be_main.c
blobf3e97ab3321d5636067a507b83be2f2d778eef2f
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, BE_DEVICE_ID2) },
35 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
36 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
37 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
38 { 0 }
39 };
40 MODULE_DEVICE_TABLE(pci, be_dev_ids);
41
42 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
43 {
44 struct be_dma_mem *mem = &q->dma_mem;
45 if (mem->va)
46 pci_free_consistent(adapter->pdev, mem->size,
47 mem->va, mem->dma);
48 }
49
50 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
51 u16 len, u16 entry_size)
52 {
53 struct be_dma_mem *mem = &q->dma_mem;
54
55 memset(q, 0, sizeof(*q));
56 q->len = len;
57 q->entry_size = entry_size;
58 mem->size = len * entry_size;
59 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
60 if (!mem->va)
61 return -1;
62 memset(mem->va, 0, mem->size);
63 return 0;
64 }
65
66 static void be_intr_set(struct be_adapter *adapter, bool enable)
67 {
68 u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
69 u32 reg = ioread32(addr);
70 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
71
72 if (!enabled && enable)
73 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
74 else if (enabled && !enable)
75 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
76 else
77 return;
78
79 iowrite32(reg, addr);
80 }
81
82 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
83 {
84 u32 val = 0;
85 val |= qid & DB_RQ_RING_ID_MASK;
86 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
87 iowrite32(val, adapter->db + DB_RQ_OFFSET);
88 }
89
90 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
91 {
92 u32 val = 0;
93 val |= qid & DB_TXULP_RING_ID_MASK;
94 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
95 iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
96 }
97
98 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
99 bool arm, bool clear_int, u16 num_popped)
100 {
101 u32 val = 0;
102 val |= qid & DB_EQ_RING_ID_MASK;
103 if (arm)
104 val |= 1 << DB_EQ_REARM_SHIFT;
105 if (clear_int)
106 val |= 1 << DB_EQ_CLR_SHIFT;
107 val |= 1 << DB_EQ_EVNT_SHIFT;
108 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
109 iowrite32(val, adapter->db + DB_EQ_OFFSET);
110 }
111
112 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
113 {
114 u32 val = 0;
115 val |= qid & DB_CQ_RING_ID_MASK;
116 if (arm)
117 val |= 1 << DB_CQ_REARM_SHIFT;
118 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
119 iowrite32(val, adapter->db + DB_CQ_OFFSET);
120 }
121
122 static int be_mac_addr_set(struct net_device *netdev, void *p)
123 {
124 struct be_adapter *adapter = netdev_priv(netdev);
125 struct sockaddr *addr = p;
126 int status = 0;
127
128 if (!is_valid_ether_addr(addr->sa_data))
129 return -EADDRNOTAVAIL;
130
131 status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
132 if (status)
133 return status;
134
135 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
136 adapter->if_handle, &adapter->pmac_id);
137 if (!status)
138 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
139
140 return status;
141 }
142
143 void netdev_stats_update(struct be_adapter *adapter)
144 {
145 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
146 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
147 struct be_port_rxf_stats *port_stats =
148 &rxf_stats->port[adapter->port_num];
149 struct net_device_stats *dev_stats = &adapter->netdev->stats;
150 struct be_erx_stats *erx_stats = &hw_stats->erx;
151
152 dev_stats->rx_packets = port_stats->rx_total_frames;
153 dev_stats->tx_packets = port_stats->tx_unicastframes +
154 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
155 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
156 (u64) port_stats->rx_bytes_lsd;
157 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
158 (u64) port_stats->tx_bytes_lsd;
159
160 /* bad pkts received */
161 dev_stats->rx_errors = port_stats->rx_crc_errors +
162 port_stats->rx_alignment_symbol_errors +
163 port_stats->rx_in_range_errors +
164 port_stats->rx_out_range_errors +
165 port_stats->rx_frame_too_long +
166 port_stats->rx_dropped_too_small +
167 port_stats->rx_dropped_too_short +
168 port_stats->rx_dropped_header_too_small +
169 port_stats->rx_dropped_tcp_length +
170 port_stats->rx_dropped_runt +
171 port_stats->rx_tcp_checksum_errs +
172 port_stats->rx_ip_checksum_errs +
173 port_stats->rx_udp_checksum_errs;
174
175 /* no space in linux buffers: best possible approximation */
176 dev_stats->rx_dropped =
177 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
178
179 /* detailed rx errors */
180 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
181 port_stats->rx_out_range_errors +
182 port_stats->rx_frame_too_long;
183
184 /* receive ring buffer overflow */
185 dev_stats->rx_over_errors = 0;
186
187 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
188
189 /* frame alignment errors */
190 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
191
192 /* receiver fifo overrun */
193 /* drops_no_pbuf is no per i/f, it's per BE card */
194 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
195 port_stats->rx_input_fifo_overflow +
196 rxf_stats->rx_drops_no_pbuf;
197 /* receiver missed packetd */
198 dev_stats->rx_missed_errors = 0;
199
200 /* packet transmit problems */
201 dev_stats->tx_errors = 0;
202
203 /* no space available in linux */
204 dev_stats->tx_dropped = 0;
205
206 dev_stats->multicast = port_stats->rx_multicast_frames;
207 dev_stats->collisions = 0;
208
209 /* detailed tx_errors */
210 dev_stats->tx_aborted_errors = 0;
211 dev_stats->tx_carrier_errors = 0;
212 dev_stats->tx_fifo_errors = 0;
213 dev_stats->tx_heartbeat_errors = 0;
214 dev_stats->tx_window_errors = 0;
215 }
216
217 void be_link_status_update(struct be_adapter *adapter, bool link_up)
218 {
219 struct net_device *netdev = adapter->netdev;
220
221 /* If link came up or went down */
222 if (adapter->link_up != link_up) {
223 if (link_up) {
224 netif_start_queue(netdev);
225 netif_carrier_on(netdev);
226 printk(KERN_INFO "%s: Link up\n", netdev->name);
227 } else {
228 netif_stop_queue(netdev);
229 netif_carrier_off(netdev);
230 printk(KERN_INFO "%s: Link down\n", netdev->name);
231 }
232 adapter->link_up = link_up;
233 }
234 }
235
236 /* Update the EQ delay n BE based on the RX frags consumed / sec */
237 static void be_rx_eqd_update(struct be_adapter *adapter)
238 {
239 struct be_eq_obj *rx_eq = &adapter->rx_eq;
240 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
241 ulong now = jiffies;
242 u32 eqd;
243
244 if (!rx_eq->enable_aic)
245 return;
246
247 /* Wrapped around */
248 if (time_before(now, stats->rx_fps_jiffies)) {
249 stats->rx_fps_jiffies = now;
250 return;
251 }
252
253 /* Update once a second */
254 if ((now - stats->rx_fps_jiffies) < HZ)
255 return;
256
257 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
258 ((now - stats->rx_fps_jiffies) / HZ);
259
260 stats->rx_fps_jiffies = now;
261 stats->be_prev_rx_frags = stats->be_rx_frags;
262 eqd = stats->be_rx_fps / 110000;
263 eqd = eqd << 3;
264 if (eqd > rx_eq->max_eqd)
265 eqd = rx_eq->max_eqd;
266 if (eqd < rx_eq->min_eqd)
267 eqd = rx_eq->min_eqd;
268 if (eqd < 10)
269 eqd = 0;
270 if (eqd != rx_eq->cur_eqd)
271 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
272
273 rx_eq->cur_eqd = eqd;
274 }
275
276 static struct net_device_stats *be_get_stats(struct net_device *dev)
277 {
278 return &dev->stats;
279 }
280
281 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
282 {
283 u64 rate = bytes;
284
285 do_div(rate, ticks / HZ);
286 rate <<= 3; /* bytes/sec -> bits/sec */
287 do_div(rate, 1000000ul); /* MB/Sec */
288
289 return rate;
290 }
291
292 static void be_tx_rate_update(struct be_adapter *adapter)
293 {
294 struct be_drvr_stats *stats = drvr_stats(adapter);
295 ulong now = jiffies;
296
297 /* Wrapped around? */
298 if (time_before(now, stats->be_tx_jiffies)) {
299 stats->be_tx_jiffies = now;
300 return;
301 }
302
303 /* Update tx rate once in two seconds */
304 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
305 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
306 - stats->be_tx_bytes_prev,
307 now - stats->be_tx_jiffies);
308 stats->be_tx_jiffies = now;
309 stats->be_tx_bytes_prev = stats->be_tx_bytes;
310 }
311 }
312
313 static void be_tx_stats_update(struct be_adapter *adapter,
314 u32 wrb_cnt, u32 copied, bool stopped)
315 {
316 struct be_drvr_stats *stats = drvr_stats(adapter);
317 stats->be_tx_reqs++;
318 stats->be_tx_wrbs += wrb_cnt;
319 stats->be_tx_bytes += copied;
320 if (stopped)
321 stats->be_tx_stops++;
322 }
323
324 /* Determine number of WRB entries needed to xmit data in an skb */
325 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
326 {
327 int cnt = (skb->len > skb->data_len);
328
329 cnt += skb_shinfo(skb)->nr_frags;
330
331 /* to account for hdr wrb */
332 cnt++;
333 if (cnt & 1) {
334 /* add a dummy to make it an even num */
335 cnt++;
336 *dummy = true;
337 } else
338 *dummy = false;
339 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
340 return cnt;
341 }
342
343 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
344 {
345 wrb->frag_pa_hi = upper_32_bits(addr);
346 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
347 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
348 }
349
350 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
351 bool vlan, u32 wrb_cnt, u32 len)
352 {
353 memset(hdr, 0, sizeof(*hdr));
354
355 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
356
357 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
358 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
360 hdr, skb_shinfo(skb)->gso_size);
361 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
362 if (is_tcp_pkt(skb))
363 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
364 else if (is_udp_pkt(skb))
365 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
366 }
367
368 if (vlan && vlan_tx_tag_present(skb)) {
369 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
370 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
371 hdr, vlan_tx_tag_get(skb));
372 }
373
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
376 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
377 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
378 }
379
380
381 static int make_tx_wrbs(struct be_adapter *adapter,
382 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
383 {
384 u64 busaddr;
385 u32 i, copied = 0;
386 struct pci_dev *pdev = adapter->pdev;
387 struct sk_buff *first_skb = skb;
388 struct be_queue_info *txq = &adapter->tx_obj.q;
389 struct be_eth_wrb *wrb;
390 struct be_eth_hdr_wrb *hdr;
391
392 hdr = queue_head_node(txq);
393 atomic_add(wrb_cnt, &txq->used);
394 queue_head_inc(txq);
395
396 if (skb_dma_map(&pdev->dev, skb, DMA_TO_DEVICE)) {
397 dev_err(&pdev->dev, "TX DMA mapping failed\n");
398 return 0;
399 }
400
401 if (skb->len > skb->data_len) {
402 int len = skb->len - skb->data_len;
403 wrb = queue_head_node(txq);
404 busaddr = skb_shinfo(skb)->dma_head;
405 wrb_fill(wrb, busaddr, len);
406 be_dws_cpu_to_le(wrb, sizeof(*wrb));
407 queue_head_inc(txq);
408 copied += len;
409 }
410
411 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
412 struct skb_frag_struct *frag =
413 &skb_shinfo(skb)->frags[i];
414
415 busaddr = skb_shinfo(skb)->dma_maps[i];
416 wrb = queue_head_node(txq);
417 wrb_fill(wrb, busaddr, frag->size);
418 be_dws_cpu_to_le(wrb, sizeof(*wrb));
419 queue_head_inc(txq);
420 copied += frag->size;
421 }
422
423 if (dummy_wrb) {
424 wrb = queue_head_node(txq);
425 wrb_fill(wrb, 0, 0);
426 be_dws_cpu_to_le(wrb, sizeof(*wrb));
427 queue_head_inc(txq);
428 }
429
430 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
431 wrb_cnt, copied);
432 be_dws_cpu_to_le(hdr, sizeof(*hdr));
433
434 return copied;
435 }
436
437 static netdev_tx_t be_xmit(struct sk_buff *skb,
438 struct net_device *netdev)
439 {
440 struct be_adapter *adapter = netdev_priv(netdev);
441 struct be_tx_obj *tx_obj = &adapter->tx_obj;
442 struct be_queue_info *txq = &tx_obj->q;
443 u32 wrb_cnt = 0, copied = 0;
444 u32 start = txq->head;
445 bool dummy_wrb, stopped = false;
446
447 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
448
449 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
450 if (copied) {
451 /* record the sent skb in the sent_skb table */
452 BUG_ON(tx_obj->sent_skb_list[start]);
453 tx_obj->sent_skb_list[start] = skb;
454
455 /* Ensure txq has space for the next skb; Else stop the queue
456 * *BEFORE* ringing the tx doorbell, so that we serialze the
457 * tx compls of the current transmit which'll wake up the queue
458 */
459 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
460 txq->len) {
461 netif_stop_queue(netdev);
462 stopped = true;
463 }
464
465 be_txq_notify(adapter, txq->id, wrb_cnt);
466
467 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
468 } else {
469 txq->head = start;
470 dev_kfree_skb_any(skb);
471 }
472 return NETDEV_TX_OK;
473 }
474
475 static int be_change_mtu(struct net_device *netdev, int new_mtu)
476 {
477 struct be_adapter *adapter = netdev_priv(netdev);
478 if (new_mtu < BE_MIN_MTU ||
479 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
480 dev_info(&adapter->pdev->dev,
481 "MTU must be between %d and %d bytes\n",
482 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
483 return -EINVAL;
484 }
485 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
486 netdev->mtu, new_mtu);
487 netdev->mtu = new_mtu;
488 return 0;
489 }
490
491 /*
492 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
493 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
494 * set the BE in promiscuous VLAN mode.
495 */
496 static int be_vid_config(struct be_adapter *adapter)
497 {
498 u16 vtag[BE_NUM_VLANS_SUPPORTED];
499 u16 ntags = 0, i;
500 int status;
501
502 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
503 /* Construct VLAN Table to give to HW */
504 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
505 if (adapter->vlan_tag[i]) {
506 vtag[ntags] = cpu_to_le16(i);
507 ntags++;
508 }
509 }
510 status = be_cmd_vlan_config(adapter, adapter->if_handle,
511 vtag, ntags, 1, 0);
512 } else {
513 status = be_cmd_vlan_config(adapter, adapter->if_handle,
514 NULL, 0, 1, 1);
515 }
516 return status;
517 }
518
519 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
520 {
521 struct be_adapter *adapter = netdev_priv(netdev);
522 struct be_eq_obj *rx_eq = &adapter->rx_eq;
523 struct be_eq_obj *tx_eq = &adapter->tx_eq;
524
525 be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
526 be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
527 adapter->vlan_grp = grp;
528 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
529 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
530 }
531
532 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
533 {
534 struct be_adapter *adapter = netdev_priv(netdev);
535
536 adapter->num_vlans++;
537 adapter->vlan_tag[vid] = 1;
538
539 be_vid_config(adapter);
540 }
541
542 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
543 {
544 struct be_adapter *adapter = netdev_priv(netdev);
545
546 adapter->num_vlans--;
547 adapter->vlan_tag[vid] = 0;
548
549 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
550 be_vid_config(adapter);
551 }
552
553 static void be_set_multicast_list(struct net_device *netdev)
554 {
555 struct be_adapter *adapter = netdev_priv(netdev);
556
557 if (netdev->flags & IFF_PROMISC) {
558 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
559 adapter->promiscuous = true;
560 goto done;
561 }
562
563 /* BE was previously in promiscous mode; disable it */
564 if (adapter->promiscuous) {
565 adapter->promiscuous = false;
566 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
567 }
568
569 /* Enable multicast promisc if num configured exceeds what we support */
570 if (netdev->flags & IFF_ALLMULTI || netdev->mc_count > BE_MAX_MC) {
571 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0,
572 &adapter->mc_cmd_mem);
573 goto done;
574 }
575
576 be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
577 netdev->mc_count, &adapter->mc_cmd_mem);
578 done:
579 return;
580 }
581
582 static void be_rx_rate_update(struct be_adapter *adapter)
583 {
584 struct be_drvr_stats *stats = drvr_stats(adapter);
585 ulong now = jiffies;
586
587 /* Wrapped around */
588 if (time_before(now, stats->be_rx_jiffies)) {
589 stats->be_rx_jiffies = now;
590 return;
591 }
592
593 /* Update the rate once in two seconds */
594 if ((now - stats->be_rx_jiffies) < 2 * HZ)
595 return;
596
597 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
598 - stats->be_rx_bytes_prev,
599 now - stats->be_rx_jiffies);
600 stats->be_rx_jiffies = now;
601 stats->be_rx_bytes_prev = stats->be_rx_bytes;
602 }
603
604 static void be_rx_stats_update(struct be_adapter *adapter,
605 u32 pktsize, u16 numfrags)
606 {
607 struct be_drvr_stats *stats = drvr_stats(adapter);
608
609 stats->be_rx_compl++;
610 stats->be_rx_frags += numfrags;
611 stats->be_rx_bytes += pktsize;
612 }
613
614 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
615 {
616 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
617
618 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
619 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
620 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
621 if (ip_version) {
622 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
623 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
624 }
625 ipv6_chk = (ip_version && (tcpf || udpf));
626
627 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
628 }
629
630 static struct be_rx_page_info *
631 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
632 {
633 struct be_rx_page_info *rx_page_info;
634 struct be_queue_info *rxq = &adapter->rx_obj.q;
635
636 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
637 BUG_ON(!rx_page_info->page);
638
639 if (rx_page_info->last_page_user)
640 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
641 adapter->big_page_size, PCI_DMA_FROMDEVICE);
642
643 atomic_dec(&rxq->used);
644 return rx_page_info;
645 }
646
647 /* Throwaway the data in the Rx completion */
648 static void be_rx_compl_discard(struct be_adapter *adapter,
649 struct be_eth_rx_compl *rxcp)
650 {
651 struct be_queue_info *rxq = &adapter->rx_obj.q;
652 struct be_rx_page_info *page_info;
653 u16 rxq_idx, i, num_rcvd;
654
655 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
656 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
657
658 for (i = 0; i < num_rcvd; i++) {
659 page_info = get_rx_page_info(adapter, rxq_idx);
660 put_page(page_info->page);
661 memset(page_info, 0, sizeof(*page_info));
662 index_inc(&rxq_idx, rxq->len);
663 }
664 }
665
666 /*
667 * skb_fill_rx_data forms a complete skb for an ether frame
668 * indicated by rxcp.
669 */
670 static void skb_fill_rx_data(struct be_adapter *adapter,
671 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
672 {
673 struct be_queue_info *rxq = &adapter->rx_obj.q;
674 struct be_rx_page_info *page_info;
675 u16 rxq_idx, i, num_rcvd, j;
676 u32 pktsize, hdr_len, curr_frag_len, size;
677 u8 *start;
678
679 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
680 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
681 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
682
683 page_info = get_rx_page_info(adapter, rxq_idx);
684
685 start = page_address(page_info->page) + page_info->page_offset;
686 prefetch(start);
687
688 /* Copy data in the first descriptor of this completion */
689 curr_frag_len = min(pktsize, rx_frag_size);
690
691 /* Copy the header portion into skb_data */
692 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
693 memcpy(skb->data, start, hdr_len);
694 skb->len = curr_frag_len;
695 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
696 /* Complete packet has now been moved to data */
697 put_page(page_info->page);
698 skb->data_len = 0;
699 skb->tail += curr_frag_len;
700 } else {
701 skb_shinfo(skb)->nr_frags = 1;
702 skb_shinfo(skb)->frags[0].page = page_info->page;
703 skb_shinfo(skb)->frags[0].page_offset =
704 page_info->page_offset + hdr_len;
705 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
706 skb->data_len = curr_frag_len - hdr_len;
707 skb->tail += hdr_len;
708 }
709 memset(page_info, 0, sizeof(*page_info));
710
711 if (pktsize <= rx_frag_size) {
712 BUG_ON(num_rcvd != 1);
713 goto done;
714 }
715
716 /* More frags present for this completion */
717 size = pktsize;
718 for (i = 1, j = 0; i < num_rcvd; i++) {
719 size -= curr_frag_len;
720 index_inc(&rxq_idx, rxq->len);
721 page_info = get_rx_page_info(adapter, rxq_idx);
722
723 curr_frag_len = min(size, rx_frag_size);
724
725 /* Coalesce all frags from the same physical page in one slot */
726 if (page_info->page_offset == 0) {
727 /* Fresh page */
728 j++;
729 skb_shinfo(skb)->frags[j].page = page_info->page;
730 skb_shinfo(skb)->frags[j].page_offset =
731 page_info->page_offset;
732 skb_shinfo(skb)->frags[j].size = 0;
733 skb_shinfo(skb)->nr_frags++;
734 } else {
735 put_page(page_info->page);
736 }
737
738 skb_shinfo(skb)->frags[j].size += curr_frag_len;
739 skb->len += curr_frag_len;
740 skb->data_len += curr_frag_len;
741
742 memset(page_info, 0, sizeof(*page_info));
743 }
744 BUG_ON(j > MAX_SKB_FRAGS);
745
746 done:
747 be_rx_stats_update(adapter, pktsize, num_rcvd);
748 return;
749 }
750
751 /* Process the RX completion indicated by rxcp when GRO is disabled */
752 static void be_rx_compl_process(struct be_adapter *adapter,
753 struct be_eth_rx_compl *rxcp)
754 {
755 struct sk_buff *skb;
756 u32 vlanf, vid;
757 u8 vtm;
758
759 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
760 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
761
762 /* vlanf could be wrongly set in some cards.
763 * ignore if vtm is not set */
764 if ((adapter->cap == 0x400) && !vtm)
765 vlanf = 0;
766
767 skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
768 if (!skb) {
769 if (net_ratelimit())
770 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
771 be_rx_compl_discard(adapter, rxcp);
772 return;
773 }
774
775 skb_fill_rx_data(adapter, skb, rxcp);
776
777 if (do_pkt_csum(rxcp, adapter->rx_csum))
778 skb->ip_summed = CHECKSUM_NONE;
779 else
780 skb->ip_summed = CHECKSUM_UNNECESSARY;
781
782 skb->truesize = skb->len + sizeof(struct sk_buff);
783 skb->protocol = eth_type_trans(skb, adapter->netdev);
784 skb->dev = adapter->netdev;
785
786 if (vlanf) {
787 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
788 kfree_skb(skb);
789 return;
790 }
791 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
792 vid = be16_to_cpu(vid);
793 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
794 } else {
795 netif_receive_skb(skb);
796 }
797
798 return;
799 }
800
801 /* Process the RX completion indicated by rxcp when GRO is enabled */
802 static void be_rx_compl_process_gro(struct be_adapter *adapter,
803 struct be_eth_rx_compl *rxcp)
804 {
805 struct be_rx_page_info *page_info;
806 struct sk_buff *skb = NULL;
807 struct be_queue_info *rxq = &adapter->rx_obj.q;
808 struct be_eq_obj *eq_obj = &adapter->rx_eq;
809 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
810 u16 i, rxq_idx = 0, vid, j;
811 u8 vtm;
812
813 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
814 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
815 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
816 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
817 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
818
819 /* vlanf could be wrongly set in some cards.
820 * ignore if vtm is not set */
821 if ((adapter->cap == 0x400) && !vtm)
822 vlanf = 0;
823
824 skb = napi_get_frags(&eq_obj->napi);
825 if (!skb) {
826 be_rx_compl_discard(adapter, rxcp);
827 return;
828 }
829
830 remaining = pkt_size;
831 for (i = 0, j = -1; i < num_rcvd; i++) {
832 page_info = get_rx_page_info(adapter, rxq_idx);
833
834 curr_frag_len = min(remaining, rx_frag_size);
835
836 /* Coalesce all frags from the same physical page in one slot */
837 if (i == 0 || page_info->page_offset == 0) {
838 /* First frag or Fresh page */
839 j++;
840 skb_shinfo(skb)->frags[j].page = page_info->page;
841 skb_shinfo(skb)->frags[j].page_offset =
842 page_info->page_offset;
843 skb_shinfo(skb)->frags[j].size = 0;
844 } else {
845 put_page(page_info->page);
846 }
847 skb_shinfo(skb)->frags[j].size += curr_frag_len;
848
849 remaining -= curr_frag_len;
850 index_inc(&rxq_idx, rxq->len);
851 memset(page_info, 0, sizeof(*page_info));
852 }
853 BUG_ON(j > MAX_SKB_FRAGS);
854
855 skb_shinfo(skb)->nr_frags = j + 1;
856 skb->len = pkt_size;
857 skb->data_len = pkt_size;
858 skb->truesize += pkt_size;
859 skb->ip_summed = CHECKSUM_UNNECESSARY;
860
861 if (likely(!vlanf)) {
862 napi_gro_frags(&eq_obj->napi);
863 } else {
864 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
865 vid = be16_to_cpu(vid);
866
867 if (!adapter->vlan_grp || adapter->num_vlans == 0)
868 return;
869
870 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
871 }
872
873 be_rx_stats_update(adapter, pkt_size, num_rcvd);
874 return;
875 }
876
877 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
878 {
879 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
880
881 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
882 return NULL;
883
884 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
885
886 queue_tail_inc(&adapter->rx_obj.cq);
887 return rxcp;
888 }
889
890 /* To reset the valid bit, we need to reset the whole word as
891 * when walking the queue the valid entries are little-endian
892 * and invalid entries are host endian
893 */
894 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
895 {
896 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
897 }
898
899 static inline struct page *be_alloc_pages(u32 size)
900 {
901 gfp_t alloc_flags = GFP_ATOMIC;
902 u32 order = get_order(size);
903 if (order > 0)
904 alloc_flags |= __GFP_COMP;
905 return alloc_pages(alloc_flags, order);
906 }
907
908 /*
909 * Allocate a page, split it to fragments of size rx_frag_size and post as
910 * receive buffers to BE
911 */
912 static void be_post_rx_frags(struct be_adapter *adapter)
913 {
914 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
915 struct be_rx_page_info *page_info = NULL;
916 struct be_queue_info *rxq = &adapter->rx_obj.q;
917 struct page *pagep = NULL;
918 struct be_eth_rx_d *rxd;
919 u64 page_dmaaddr = 0, frag_dmaaddr;
920 u32 posted, page_offset = 0;
921
922 page_info = &page_info_tbl[rxq->head];
923 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
924 if (!pagep) {
925 pagep = be_alloc_pages(adapter->big_page_size);
926 if (unlikely(!pagep)) {
927 drvr_stats(adapter)->be_ethrx_post_fail++;
928 break;
929 }
930 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
931 adapter->big_page_size,
932 PCI_DMA_FROMDEVICE);
933 page_info->page_offset = 0;
934 } else {
935 get_page(pagep);
936 page_info->page_offset = page_offset + rx_frag_size;
937 }
938 page_offset = page_info->page_offset;
939 page_info->page = pagep;
940 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
941 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
942
943 rxd = queue_head_node(rxq);
944 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
945 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
946 queue_head_inc(rxq);
947
948 /* Any space left in the current big page for another frag? */
949 if ((page_offset + rx_frag_size + rx_frag_size) >
950 adapter->big_page_size) {
951 pagep = NULL;
952 page_info->last_page_user = true;
953 }
954 page_info = &page_info_tbl[rxq->head];
955 }
956 if (pagep)
957 page_info->last_page_user = true;
958
959 if (posted) {
960 atomic_add(posted, &rxq->used);
961 be_rxq_notify(adapter, rxq->id, posted);
962 } else if (atomic_read(&rxq->used) == 0) {
963 /* Let be_worker replenish when memory is available */
964 adapter->rx_post_starved = true;
965 }
966
967 return;
968 }
969
970 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
971 {
972 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
973
974 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
975 return NULL;
976
977 be_dws_le_to_cpu(txcp, sizeof(*txcp));
978
979 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
980
981 queue_tail_inc(tx_cq);
982 return txcp;
983 }
984
985 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
986 {
987 struct be_queue_info *txq = &adapter->tx_obj.q;
988 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
989 struct sk_buff *sent_skb;
990 u16 cur_index, num_wrbs = 0;
991
992 cur_index = txq->tail;
993 sent_skb = sent_skbs[cur_index];
994 BUG_ON(!sent_skb);
995 sent_skbs[cur_index] = NULL;
996
997 do {
998 cur_index = txq->tail;
999 num_wrbs++;
1000 queue_tail_inc(txq);
1001 } while (cur_index != last_index);
1002
1003 atomic_sub(num_wrbs, &txq->used);
1004 skb_dma_unmap(&adapter->pdev->dev, sent_skb, DMA_TO_DEVICE);
1005 kfree_skb(sent_skb);
1006 }
1007
1008 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1009 {
1010 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1011
1012 if (!eqe->evt)
1013 return NULL;
1014
1015 eqe->evt = le32_to_cpu(eqe->evt);
1016 queue_tail_inc(&eq_obj->q);
1017 return eqe;
1018 }
1019
1020 static int event_handle(struct be_adapter *adapter,
1021 struct be_eq_obj *eq_obj)
1022 {
1023 struct be_eq_entry *eqe;
1024 u16 num = 0;
1025
1026 while ((eqe = event_get(eq_obj)) != NULL) {
1027 eqe->evt = 0;
1028 num++;
1029 }
1030
1031 /* Deal with any spurious interrupts that come
1032 * without events
1033 */
1034 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1035 if (num)
1036 napi_schedule(&eq_obj->napi);
1037
1038 return num;
1039 }
1040
1041 /* Just read and notify events without processing them.
1042 * Used at the time of destroying event queues */
1043 static void be_eq_clean(struct be_adapter *adapter,
1044 struct be_eq_obj *eq_obj)
1045 {
1046 struct be_eq_entry *eqe;
1047 u16 num = 0;
1048
1049 while ((eqe = event_get(eq_obj)) != NULL) {
1050 eqe->evt = 0;
1051 num++;
1052 }
1053
1054 if (num)
1055 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1056 }
1057
1058 static void be_rx_q_clean(struct be_adapter *adapter)
1059 {
1060 struct be_rx_page_info *page_info;
1061 struct be_queue_info *rxq = &adapter->rx_obj.q;
1062 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1063 struct be_eth_rx_compl *rxcp;
1064 u16 tail;
1065
1066 /* First cleanup pending rx completions */
1067 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1068 be_rx_compl_discard(adapter, rxcp);
1069 be_rx_compl_reset(rxcp);
1070 be_cq_notify(adapter, rx_cq->id, true, 1);
1071 }
1072
1073 /* Then free posted rx buffer that were not used */
1074 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1075 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1076 page_info = get_rx_page_info(adapter, tail);
1077 put_page(page_info->page);
1078 memset(page_info, 0, sizeof(*page_info));
1079 }
1080 BUG_ON(atomic_read(&rxq->used));
1081 }
1082
1083 static void be_tx_compl_clean(struct be_adapter *adapter)
1084 {
1085 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1086 struct be_queue_info *txq = &adapter->tx_obj.q;
1087 struct be_eth_tx_compl *txcp;
1088 u16 end_idx, cmpl = 0, timeo = 0;
1089
1090 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1091 do {
1092 while ((txcp = be_tx_compl_get(tx_cq))) {
1093 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1094 wrb_index, txcp);
1095 be_tx_compl_process(adapter, end_idx);
1096 cmpl++;
1097 }
1098 if (cmpl) {
1099 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1100 cmpl = 0;
1101 }
1102
1103 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1104 break;
1105
1106 mdelay(1);
1107 } while (true);
1108
1109 if (atomic_read(&txq->used))
1110 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1111 atomic_read(&txq->used));
1112 }
1113
1114 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1115 {
1116 struct be_queue_info *q;
1117
1118 q = &adapter->mcc_obj.q;
1119 if (q->created)
1120 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1121 be_queue_free(adapter, q);
1122
1123 q = &adapter->mcc_obj.cq;
1124 if (q->created)
1125 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1126 be_queue_free(adapter, q);
1127 }
1128
1129 /* Must be called only after TX qs are created as MCC shares TX EQ */
1130 static int be_mcc_queues_create(struct be_adapter *adapter)
1131 {
1132 struct be_queue_info *q, *cq;
1133
1134 /* Alloc MCC compl queue */
1135 cq = &adapter->mcc_obj.cq;
1136 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1137 sizeof(struct be_mcc_compl)))
1138 goto err;
1139
1140 /* Ask BE to create MCC compl queue; share TX's eq */
1141 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1142 goto mcc_cq_free;
1143
1144 /* Alloc MCC queue */
1145 q = &adapter->mcc_obj.q;
1146 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1147 goto mcc_cq_destroy;
1148
1149 /* Ask BE to create MCC queue */
1150 if (be_cmd_mccq_create(adapter, q, cq))
1151 goto mcc_q_free;
1152
1153 return 0;
1154
1155 mcc_q_free:
1156 be_queue_free(adapter, q);
1157 mcc_cq_destroy:
1158 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1159 mcc_cq_free:
1160 be_queue_free(adapter, cq);
1161 err:
1162 return -1;
1163 }
1164
1165 static void be_tx_queues_destroy(struct be_adapter *adapter)
1166 {
1167 struct be_queue_info *q;
1168
1169 q = &adapter->tx_obj.q;
1170 if (q->created)
1171 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1172 be_queue_free(adapter, q);
1173
1174 q = &adapter->tx_obj.cq;
1175 if (q->created)
1176 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1177 be_queue_free(adapter, q);
1178
1179 /* Clear any residual events */
1180 be_eq_clean(adapter, &adapter->tx_eq);
1181
1182 q = &adapter->tx_eq.q;
1183 if (q->created)
1184 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1185 be_queue_free(adapter, q);
1186 }
1187
1188 static int be_tx_queues_create(struct be_adapter *adapter)
1189 {
1190 struct be_queue_info *eq, *q, *cq;
1191
1192 adapter->tx_eq.max_eqd = 0;
1193 adapter->tx_eq.min_eqd = 0;
1194 adapter->tx_eq.cur_eqd = 96;
1195 adapter->tx_eq.enable_aic = false;
1196 /* Alloc Tx Event queue */
1197 eq = &adapter->tx_eq.q;
1198 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1199 return -1;
1200
1201 /* Ask BE to create Tx Event queue */
1202 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1203 goto tx_eq_free;
1204 /* Alloc TX eth compl queue */
1205 cq = &adapter->tx_obj.cq;
1206 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1207 sizeof(struct be_eth_tx_compl)))
1208 goto tx_eq_destroy;
1209
1210 /* Ask BE to create Tx eth compl queue */
1211 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1212 goto tx_cq_free;
1213
1214 /* Alloc TX eth queue */
1215 q = &adapter->tx_obj.q;
1216 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1217 goto tx_cq_destroy;
1218
1219 /* Ask BE to create Tx eth queue */
1220 if (be_cmd_txq_create(adapter, q, cq))
1221 goto tx_q_free;
1222 return 0;
1223
1224 tx_q_free:
1225 be_queue_free(adapter, q);
1226 tx_cq_destroy:
1227 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1228 tx_cq_free:
1229 be_queue_free(adapter, cq);
1230 tx_eq_destroy:
1231 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1232 tx_eq_free:
1233 be_queue_free(adapter, eq);
1234 return -1;
1235 }
1236
1237 static void be_rx_queues_destroy(struct be_adapter *adapter)
1238 {
1239 struct be_queue_info *q;
1240
1241 q = &adapter->rx_obj.q;
1242 if (q->created) {
1243 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1244 be_rx_q_clean(adapter);
1245 }
1246 be_queue_free(adapter, q);
1247
1248 q = &adapter->rx_obj.cq;
1249 if (q->created)
1250 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1251 be_queue_free(adapter, q);
1252
1253 /* Clear any residual events */
1254 be_eq_clean(adapter, &adapter->rx_eq);
1255
1256 q = &adapter->rx_eq.q;
1257 if (q->created)
1258 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1259 be_queue_free(adapter, q);
1260 }
1261
1262 static int be_rx_queues_create(struct be_adapter *adapter)
1263 {
1264 struct be_queue_info *eq, *q, *cq;
1265 int rc;
1266
1267 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1268 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1269 adapter->rx_eq.min_eqd = 0;
1270 adapter->rx_eq.cur_eqd = 0;
1271 adapter->rx_eq.enable_aic = true;
1272
1273 /* Alloc Rx Event queue */
1274 eq = &adapter->rx_eq.q;
1275 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1276 sizeof(struct be_eq_entry));
1277 if (rc)
1278 return rc;
1279
1280 /* Ask BE to create Rx Event queue */
1281 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1282 if (rc)
1283 goto rx_eq_free;
1284
1285 /* Alloc RX eth compl queue */
1286 cq = &adapter->rx_obj.cq;
1287 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1288 sizeof(struct be_eth_rx_compl));
1289 if (rc)
1290 goto rx_eq_destroy;
1291
1292 /* Ask BE to create Rx eth compl queue */
1293 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1294 if (rc)
1295 goto rx_cq_free;
1296
1297 /* Alloc RX eth queue */
1298 q = &adapter->rx_obj.q;
1299 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1300 if (rc)
1301 goto rx_cq_destroy;
1302
1303 /* Ask BE to create Rx eth queue */
1304 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1305 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1306 if (rc)
1307 goto rx_q_free;
1308
1309 return 0;
1310 rx_q_free:
1311 be_queue_free(adapter, q);
1312 rx_cq_destroy:
1313 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1314 rx_cq_free:
1315 be_queue_free(adapter, cq);
1316 rx_eq_destroy:
1317 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1318 rx_eq_free:
1319 be_queue_free(adapter, eq);
1320 return rc;
1321 }
1322
1323 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1324 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1325 {
1326 return eq_id - 8 * be_pci_func(adapter);
1327 }
1328
1329 static irqreturn_t be_intx(int irq, void *dev)
1330 {
1331 struct be_adapter *adapter = dev;
1332 int isr;
1333
1334 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1335 be_pci_func(adapter) * CEV_ISR_SIZE);
1336 if (!isr)
1337 return IRQ_NONE;
1338
1339 event_handle(adapter, &adapter->tx_eq);
1340 event_handle(adapter, &adapter->rx_eq);
1341
1342 return IRQ_HANDLED;
1343 }
1344
1345 static irqreturn_t be_msix_rx(int irq, void *dev)
1346 {
1347 struct be_adapter *adapter = dev;
1348
1349 event_handle(adapter, &adapter->rx_eq);
1350
1351 return IRQ_HANDLED;
1352 }
1353
1354 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1355 {
1356 struct be_adapter *adapter = dev;
1357
1358 event_handle(adapter, &adapter->tx_eq);
1359
1360 return IRQ_HANDLED;
1361 }
1362
1363 static inline bool do_gro(struct be_adapter *adapter,
1364 struct be_eth_rx_compl *rxcp)
1365 {
1366 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1367 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1368
1369 if (err)
1370 drvr_stats(adapter)->be_rxcp_err++;
1371
1372 return (tcp_frame && !err) ? true : false;
1373 }
1374
1375 int be_poll_rx(struct napi_struct *napi, int budget)
1376 {
1377 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1378 struct be_adapter *adapter =
1379 container_of(rx_eq, struct be_adapter, rx_eq);
1380 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1381 struct be_eth_rx_compl *rxcp;
1382 u32 work_done;
1383
1384 adapter->stats.drvr_stats.be_rx_polls++;
1385 for (work_done = 0; work_done < budget; work_done++) {
1386 rxcp = be_rx_compl_get(adapter);
1387 if (!rxcp)
1388 break;
1389
1390 if (do_gro(adapter, rxcp))
1391 be_rx_compl_process_gro(adapter, rxcp);
1392 else
1393 be_rx_compl_process(adapter, rxcp);
1394
1395 be_rx_compl_reset(rxcp);
1396 }
1397
1398 /* Refill the queue */
1399 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1400 be_post_rx_frags(adapter);
1401
1402 /* All consumed */
1403 if (work_done < budget) {
1404 napi_complete(napi);
1405 be_cq_notify(adapter, rx_cq->id, true, work_done);
1406 } else {
1407 /* More to be consumed; continue with interrupts disabled */
1408 be_cq_notify(adapter, rx_cq->id, false, work_done);
1409 }
1410 return work_done;
1411 }
1412
1413 void be_process_tx(struct be_adapter *adapter)
1414 {
1415 struct be_queue_info *txq = &adapter->tx_obj.q;
1416 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1417 struct be_eth_tx_compl *txcp;
1418 u32 num_cmpl = 0;
1419 u16 end_idx;
1420
1421 while ((txcp = be_tx_compl_get(tx_cq))) {
1422 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1423 wrb_index, txcp);
1424 be_tx_compl_process(adapter, end_idx);
1425 num_cmpl++;
1426 }
1427
1428 if (num_cmpl) {
1429 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1430
1431 /* As Tx wrbs have been freed up, wake up netdev queue if
1432 * it was stopped due to lack of tx wrbs.
1433 */
1434 if (netif_queue_stopped(adapter->netdev) &&
1435 atomic_read(&txq->used) < txq->len / 2) {
1436 netif_wake_queue(adapter->netdev);
1437 }
1438
1439 drvr_stats(adapter)->be_tx_events++;
1440 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1441 }
1442 }
1443
1444 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1445 * For TX/MCC we don't honour budget; consume everything
1446 */
1447 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1448 {
1449 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1450 struct be_adapter *adapter =
1451 container_of(tx_eq, struct be_adapter, tx_eq);
1452
1453 napi_complete(napi);
1454
1455 be_process_tx(adapter);
1456
1457 be_process_mcc(adapter);
1458
1459 return 1;
1460 }
1461
1462 static void be_worker(struct work_struct *work)
1463 {
1464 struct be_adapter *adapter =
1465 container_of(work, struct be_adapter, work.work);
1466
1467 be_cmd_get_stats(adapter, &adapter->stats.cmd);
1468
1469 /* Set EQ delay */
1470 be_rx_eqd_update(adapter);
1471
1472 be_tx_rate_update(adapter);
1473 be_rx_rate_update(adapter);
1474
1475 if (adapter->rx_post_starved) {
1476 adapter->rx_post_starved = false;
1477 be_post_rx_frags(adapter);
1478 }
1479
1480 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1481 }
1482
1483 static void be_msix_disable(struct be_adapter *adapter)
1484 {
1485 if (adapter->msix_enabled) {
1486 pci_disable_msix(adapter->pdev);
1487 adapter->msix_enabled = false;
1488 }
1489 }
1490
1491 static void be_msix_enable(struct be_adapter *adapter)
1492 {
1493 int i, status;
1494
1495 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1496 adapter->msix_entries[i].entry = i;
1497
1498 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1499 BE_NUM_MSIX_VECTORS);
1500 if (status == 0)
1501 adapter->msix_enabled = true;
1502 return;
1503 }
1504
1505 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1506 {
1507 return adapter->msix_entries[
1508 be_evt_bit_get(adapter, eq_id)].vector;
1509 }
1510
1511 static int be_request_irq(struct be_adapter *adapter,
1512 struct be_eq_obj *eq_obj,
1513 void *handler, char *desc)
1514 {
1515 struct net_device *netdev = adapter->netdev;
1516 int vec;
1517
1518 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1519 vec = be_msix_vec_get(adapter, eq_obj->q.id);
1520 return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1521 }
1522
1523 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1524 {
1525 int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1526 free_irq(vec, adapter);
1527 }
1528
1529 static int be_msix_register(struct be_adapter *adapter)
1530 {
1531 int status;
1532
1533 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1534 if (status)
1535 goto err;
1536
1537 status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1538 if (status)
1539 goto free_tx_irq;
1540
1541 return 0;
1542
1543 free_tx_irq:
1544 be_free_irq(adapter, &adapter->tx_eq);
1545 err:
1546 dev_warn(&adapter->pdev->dev,
1547 "MSIX Request IRQ failed - err %d\n", status);
1548 pci_disable_msix(adapter->pdev);
1549 adapter->msix_enabled = false;
1550 return status;
1551 }
1552
1553 static int be_irq_register(struct be_adapter *adapter)
1554 {
1555 struct net_device *netdev = adapter->netdev;
1556 int status;
1557
1558 if (adapter->msix_enabled) {
1559 status = be_msix_register(adapter);
1560 if (status == 0)
1561 goto done;
1562 }
1563
1564 /* INTx */
1565 netdev->irq = adapter->pdev->irq;
1566 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1567 adapter);
1568 if (status) {
1569 dev_err(&adapter->pdev->dev,
1570 "INTx request IRQ failed - err %d\n", status);
1571 return status;
1572 }
1573 done:
1574 adapter->isr_registered = true;
1575 return 0;
1576 }
1577
1578 static void be_irq_unregister(struct be_adapter *adapter)
1579 {
1580 struct net_device *netdev = adapter->netdev;
1581
1582 if (!adapter->isr_registered)
1583 return;
1584
1585 /* INTx */
1586 if (!adapter->msix_enabled) {
1587 free_irq(netdev->irq, adapter);
1588 goto done;
1589 }
1590
1591 /* MSIx */
1592 be_free_irq(adapter, &adapter->tx_eq);
1593 be_free_irq(adapter, &adapter->rx_eq);
1594 done:
1595 adapter->isr_registered = false;
1596 return;
1597 }
1598
1599 static int be_open(struct net_device *netdev)
1600 {
1601 struct be_adapter *adapter = netdev_priv(netdev);
1602 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1603 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1604 bool link_up;
1605 int status;
1606 u8 mac_speed;
1607 u16 link_speed;
1608
1609 /* First time posting */
1610 be_post_rx_frags(adapter);
1611
1612 napi_enable(&rx_eq->napi);
1613 napi_enable(&tx_eq->napi);
1614
1615 be_irq_register(adapter);
1616
1617 be_intr_set(adapter, true);
1618
1619 /* The evt queues are created in unarmed state; arm them */
1620 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1621 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1622
1623 /* Rx compl queue may be in unarmed state; rearm it */
1624 be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1625
1626 status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1627 &link_speed);
1628 if (status)
1629 goto ret_sts;
1630 be_link_status_update(adapter, link_up);
1631
1632 status = be_vid_config(adapter);
1633 if (status)
1634 goto ret_sts;
1635
1636 status = be_cmd_set_flow_control(adapter,
1637 adapter->tx_fc, adapter->rx_fc);
1638 if (status)
1639 goto ret_sts;
1640
1641 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1642 ret_sts:
1643 return status;
1644 }
1645
1646 static int be_setup(struct be_adapter *adapter)
1647 {
1648 struct net_device *netdev = adapter->netdev;
1649 u32 cap_flags, en_flags;
1650 int status;
1651
1652 cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1653 BE_IF_FLAGS_MCAST_PROMISCUOUS |
1654 BE_IF_FLAGS_PROMISCUOUS |
1655 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1656 en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1657 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1658
1659 status = be_cmd_if_create(adapter, cap_flags, en_flags,
1660 netdev->dev_addr, false/* pmac_invalid */,
1661 &adapter->if_handle, &adapter->pmac_id);
1662 if (status != 0)
1663 goto do_none;
1664
1665 status = be_tx_queues_create(adapter);
1666 if (status != 0)
1667 goto if_destroy;
1668
1669 status = be_rx_queues_create(adapter);
1670 if (status != 0)
1671 goto tx_qs_destroy;
1672
1673 status = be_mcc_queues_create(adapter);
1674 if (status != 0)
1675 goto rx_qs_destroy;
1676
1677 return 0;
1678
1679 rx_qs_destroy:
1680 be_rx_queues_destroy(adapter);
1681 tx_qs_destroy:
1682 be_tx_queues_destroy(adapter);
1683 if_destroy:
1684 be_cmd_if_destroy(adapter, adapter->if_handle);
1685 do_none:
1686 return status;
1687 }
1688
1689 static int be_clear(struct be_adapter *adapter)
1690 {
1691 be_mcc_queues_destroy(adapter);
1692 be_rx_queues_destroy(adapter);
1693 be_tx_queues_destroy(adapter);
1694
1695 be_cmd_if_destroy(adapter, adapter->if_handle);
1696
1697 /* tell fw we're done with firing cmds */
1698 be_cmd_fw_clean(adapter);
1699 return 0;
1700 }
1701
1702 static int be_close(struct net_device *netdev)
1703 {
1704 struct be_adapter *adapter = netdev_priv(netdev);
1705 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1706 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1707 int vec;
1708
1709 cancel_delayed_work_sync(&adapter->work);
1710
1711 netif_stop_queue(netdev);
1712 netif_carrier_off(netdev);
1713 adapter->link_up = false;
1714
1715 be_intr_set(adapter, false);
1716
1717 if (adapter->msix_enabled) {
1718 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1719 synchronize_irq(vec);
1720 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1721 synchronize_irq(vec);
1722 } else {
1723 synchronize_irq(netdev->irq);
1724 }
1725 be_irq_unregister(adapter);
1726
1727 napi_disable(&rx_eq->napi);
1728 napi_disable(&tx_eq->napi);
1729
1730 /* Wait for all pending tx completions to arrive so that
1731 * all tx skbs are freed.
1732 */
1733 be_tx_compl_clean(adapter);
1734
1735 return 0;
1736 }
1737
1738 #define FW_FILE_HDR_SIGN "ServerEngines Corp. "
1739 char flash_cookie[2][16] = {"*** SE FLAS",
1740 "H DIRECTORY *** "};
1741
1742 static bool be_flash_redboot(struct be_adapter *adapter,
1743 const u8 *p)
1744 {
1745 u32 crc_offset;
1746 u8 flashed_crc[4];
1747 int status;
1748 crc_offset = FLASH_REDBOOT_START + FLASH_REDBOOT_IMAGE_MAX_SIZE - 4
1749 + sizeof(struct flash_file_hdr) - 32*1024;
1750 p += crc_offset;
1751 status = be_cmd_get_flash_crc(adapter, flashed_crc);
1752 if (status) {
1753 dev_err(&adapter->pdev->dev,
1754 "could not get crc from flash, not flashing redboot\n");
1755 return false;
1756 }
1757
1758 /*update redboot only if crc does not match*/
1759 if (!memcmp(flashed_crc, p, 4))
1760 return false;
1761 else
1762 return true;
1763
1764 }
1765
1766 static int be_flash_image(struct be_adapter *adapter,
1767 const struct firmware *fw,
1768 struct be_dma_mem *flash_cmd, u32 flash_type)
1769 {
1770 int status;
1771 u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1772 int num_bytes;
1773 const u8 *p = fw->data;
1774 struct be_cmd_write_flashrom *req = flash_cmd->va;
1775
1776 switch (flash_type) {
1777 case FLASHROM_TYPE_ISCSI_ACTIVE:
1778 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1779 image_size = FLASH_IMAGE_MAX_SIZE;
1780 break;
1781 case FLASHROM_TYPE_ISCSI_BACKUP:
1782 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1783 image_size = FLASH_IMAGE_MAX_SIZE;
1784 break;
1785 case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1786 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1787 image_size = FLASH_IMAGE_MAX_SIZE;
1788 break;
1789 case FLASHROM_TYPE_FCOE_FW_BACKUP:
1790 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1791 image_size = FLASH_IMAGE_MAX_SIZE;
1792 break;
1793 case FLASHROM_TYPE_BIOS:
1794 image_offset = FLASH_iSCSI_BIOS_START;
1795 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1796 break;
1797 case FLASHROM_TYPE_FCOE_BIOS:
1798 image_offset = FLASH_FCoE_BIOS_START;
1799 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1800 break;
1801 case FLASHROM_TYPE_PXE_BIOS:
1802 image_offset = FLASH_PXE_BIOS_START;
1803 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1804 break;
1805 case FLASHROM_TYPE_REDBOOT:
1806 if (!be_flash_redboot(adapter, fw->data))
1807 return 0;
1808 image_offset = FLASH_REDBOOT_ISM_START;
1809 image_size = FLASH_REDBOOT_IMAGE_MAX_SIZE;
1810 break;
1811 default:
1812 return 0;
1813 }
1814
1815 p += sizeof(struct flash_file_hdr) + image_offset;
1816 if (p + image_size > fw->data + fw->size)
1817 return -1;
1818
1819 total_bytes = image_size;
1820
1821 while (total_bytes) {
1822 if (total_bytes > 32*1024)
1823 num_bytes = 32*1024;
1824 else
1825 num_bytes = total_bytes;
1826 total_bytes -= num_bytes;
1827
1828 if (!total_bytes)
1829 flash_op = FLASHROM_OPER_FLASH;
1830 else
1831 flash_op = FLASHROM_OPER_SAVE;
1832 memcpy(req->params.data_buf, p, num_bytes);
1833 p += num_bytes;
1834 status = be_cmd_write_flashrom(adapter, flash_cmd,
1835 flash_type, flash_op, num_bytes);
1836 if (status) {
1837 dev_err(&adapter->pdev->dev,
1838 "cmd to write to flash rom failed. type/op %d/%d\n",
1839 flash_type, flash_op);
1840 return -1;
1841 }
1842 yield();
1843 }
1844
1845 return 0;
1846 }
1847
1848 int be_load_fw(struct be_adapter *adapter, u8 *func)
1849 {
1850 char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1851 const struct firmware *fw;
1852 struct flash_file_hdr *fhdr;
1853 struct flash_section_info *fsec = NULL;
1854 struct be_dma_mem flash_cmd;
1855 int status;
1856 const u8 *p;
1857 bool entry_found = false;
1858 int flash_type;
1859 char fw_ver[FW_VER_LEN];
1860 char fw_cfg;
1861
1862 status = be_cmd_get_fw_ver(adapter, fw_ver);
1863 if (status)
1864 return status;
1865
1866 fw_cfg = *(fw_ver + 2);
1867 if (fw_cfg == '0')
1868 fw_cfg = '1';
1869 strcpy(fw_file, func);
1870
1871 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1872 if (status)
1873 goto fw_exit;
1874
1875 p = fw->data;
1876 fhdr = (struct flash_file_hdr *) p;
1877 if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1878 dev_err(&adapter->pdev->dev,
1879 "Firmware(%s) load error (signature did not match)\n",
1880 fw_file);
1881 status = -1;
1882 goto fw_exit;
1883 }
1884
1885 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1886
1887 p += sizeof(struct flash_file_hdr);
1888 while (p < (fw->data + fw->size)) {
1889 fsec = (struct flash_section_info *)p;
1890 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1891 entry_found = true;
1892 break;
1893 }
1894 p += 32;
1895 }
1896
1897 if (!entry_found) {
1898 status = -1;
1899 dev_err(&adapter->pdev->dev,
1900 "Flash cookie not found in firmware image\n");
1901 goto fw_exit;
1902 }
1903
1904 flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1905 flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1906 &flash_cmd.dma);
1907 if (!flash_cmd.va) {
1908 status = -ENOMEM;
1909 dev_err(&adapter->pdev->dev,
1910 "Memory allocation failure while flashing\n");
1911 goto fw_exit;
1912 }
1913
1914 for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1915 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1916 status = be_flash_image(adapter, fw, &flash_cmd,
1917 flash_type);
1918 if (status)
1919 break;
1920 }
1921
1922 pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1923 flash_cmd.dma);
1924 if (status) {
1925 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1926 goto fw_exit;
1927 }
1928
1929 dev_info(&adapter->pdev->dev, "Firmware flashed succesfully\n");
1930
1931 fw_exit:
1932 release_firmware(fw);
1933 return status;
1934 }
1935
1936 static struct net_device_ops be_netdev_ops = {
1937 .ndo_open = be_open,
1938 .ndo_stop = be_close,
1939 .ndo_start_xmit = be_xmit,
1940 .ndo_get_stats = be_get_stats,
1941 .ndo_set_rx_mode = be_set_multicast_list,
1942 .ndo_set_mac_address = be_mac_addr_set,
1943 .ndo_change_mtu = be_change_mtu,
1944 .ndo_validate_addr = eth_validate_addr,
1945 .ndo_vlan_rx_register = be_vlan_register,
1946 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1947 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1948 };
1949
1950 static void be_netdev_init(struct net_device *netdev)
1951 {
1952 struct be_adapter *adapter = netdev_priv(netdev);
1953
1954 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1955 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
1956 NETIF_F_GRO;
1957
1958 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
1959
1960 netdev->flags |= IFF_MULTICAST;
1961
1962 adapter->rx_csum = true;
1963
1964 /* Default settings for Rx and Tx flow control */
1965 adapter->rx_fc = true;
1966 adapter->tx_fc = true;
1967
1968 netif_set_gso_max_size(netdev, 65535);
1969
1970 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1971
1972 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1973
1974 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1975 BE_NAPI_WEIGHT);
1976 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1977 BE_NAPI_WEIGHT);
1978
1979 netif_carrier_off(netdev);
1980 netif_stop_queue(netdev);
1981 }
1982
1983 static void be_unmap_pci_bars(struct be_adapter *adapter)
1984 {
1985 if (adapter->csr)
1986 iounmap(adapter->csr);
1987 if (adapter->db)
1988 iounmap(adapter->db);
1989 if (adapter->pcicfg)
1990 iounmap(adapter->pcicfg);
1991 }
1992
1993 static int be_map_pci_bars(struct be_adapter *adapter)
1994 {
1995 u8 __iomem *addr;
1996
1997 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1998 pci_resource_len(adapter->pdev, 2));
1999 if (addr == NULL)
2000 return -ENOMEM;
2001 adapter->csr = addr;
2002
2003 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2004 128 * 1024);
2005 if (addr == NULL)
2006 goto pci_map_err;
2007 adapter->db = addr;
2008
2009 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
2010 pci_resource_len(adapter->pdev, 1));
2011 if (addr == NULL)
2012 goto pci_map_err;
2013 adapter->pcicfg = addr;
2014
2015 return 0;
2016 pci_map_err:
2017 be_unmap_pci_bars(adapter);
2018 return -ENOMEM;
2019 }
2020
2021
2022 static void be_ctrl_cleanup(struct be_adapter *adapter)
2023 {
2024 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2025
2026 be_unmap_pci_bars(adapter);
2027
2028 if (mem->va)
2029 pci_free_consistent(adapter->pdev, mem->size,
2030 mem->va, mem->dma);
2031
2032 mem = &adapter->mc_cmd_mem;
2033 if (mem->va)
2034 pci_free_consistent(adapter->pdev, mem->size,
2035 mem->va, mem->dma);
2036 }
2037
2038 static int be_ctrl_init(struct be_adapter *adapter)
2039 {
2040 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2041 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2042 struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2043 int status;
2044
2045 status = be_map_pci_bars(adapter);
2046 if (status)
2047 goto done;
2048
2049 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2050 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2051 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2052 if (!mbox_mem_alloc->va) {
2053 status = -ENOMEM;
2054 goto unmap_pci_bars;
2055 }
2056
2057 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2058 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2059 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2060 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2061
2062 mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2063 mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2064 &mc_cmd_mem->dma);
2065 if (mc_cmd_mem->va == NULL) {
2066 status = -ENOMEM;
2067 goto free_mbox;
2068 }
2069 memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2070
2071 spin_lock_init(&adapter->mbox_lock);
2072 spin_lock_init(&adapter->mcc_lock);
2073 spin_lock_init(&adapter->mcc_cq_lock);
2074
2075 return 0;
2076
2077 free_mbox:
2078 pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2079 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2080
2081 unmap_pci_bars:
2082 be_unmap_pci_bars(adapter);
2083
2084 done:
2085 return status;
2086 }
2087
2088 static void be_stats_cleanup(struct be_adapter *adapter)
2089 {
2090 struct be_stats_obj *stats = &adapter->stats;
2091 struct be_dma_mem *cmd = &stats->cmd;
2092
2093 if (cmd->va)
2094 pci_free_consistent(adapter->pdev, cmd->size,
2095 cmd->va, cmd->dma);
2096 }
2097
2098 static int be_stats_init(struct be_adapter *adapter)
2099 {
2100 struct be_stats_obj *stats = &adapter->stats;
2101 struct be_dma_mem *cmd = &stats->cmd;
2102
2103 cmd->size = sizeof(struct be_cmd_req_get_stats);
2104 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2105 if (cmd->va == NULL)
2106 return -1;
2107 return 0;
2108 }
2109
2110 static void __devexit be_remove(struct pci_dev *pdev)
2111 {
2112 struct be_adapter *adapter = pci_get_drvdata(pdev);
2113
2114 if (!adapter)
2115 return;
2116
2117 unregister_netdev(adapter->netdev);
2118
2119 be_clear(adapter);
2120
2121 be_stats_cleanup(adapter);
2122
2123 be_ctrl_cleanup(adapter);
2124
2125 be_msix_disable(adapter);
2126
2127 pci_set_drvdata(pdev, NULL);
2128 pci_release_regions(pdev);
2129 pci_disable_device(pdev);
2130
2131 free_netdev(adapter->netdev);
2132 }
2133
2134 static int be_get_config(struct be_adapter *adapter)
2135 {
2136 int status;
2137 u8 mac[ETH_ALEN];
2138
2139 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2140 if (status)
2141 return status;
2142
2143 status = be_cmd_query_fw_cfg(adapter,
2144 &adapter->port_num, &adapter->cap);
2145 if (status)
2146 return status;
2147
2148 memset(mac, 0, ETH_ALEN);
2149 status = be_cmd_mac_addr_query(adapter, mac,
2150 MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2151 if (status)
2152 return status;
2153
2154 if (!is_valid_ether_addr(mac))
2155 return -EADDRNOTAVAIL;
2156
2157 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2158 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2159
2160 return 0;
2161 }
2162
2163 static int __devinit be_probe(struct pci_dev *pdev,
2164 const struct pci_device_id *pdev_id)
2165 {
2166 int status = 0;
2167 struct be_adapter *adapter;
2168 struct net_device *netdev;
2169
2170 status = pci_enable_device(pdev);
2171 if (status)
2172 goto do_none;
2173
2174 status = pci_request_regions(pdev, DRV_NAME);
2175 if (status)
2176 goto disable_dev;
2177 pci_set_master(pdev);
2178
2179 netdev = alloc_etherdev(sizeof(struct be_adapter));
2180 if (netdev == NULL) {
2181 status = -ENOMEM;
2182 goto rel_reg;
2183 }
2184 adapter = netdev_priv(netdev);
2185 adapter->pdev = pdev;
2186 pci_set_drvdata(pdev, adapter);
2187 adapter->netdev = netdev;
2188 be_netdev_init(netdev);
2189 SET_NETDEV_DEV(netdev, &pdev->dev);
2190
2191 be_msix_enable(adapter);
2192
2193 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2194 if (!status) {
2195 netdev->features |= NETIF_F_HIGHDMA;
2196 } else {
2197 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2198 if (status) {
2199 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2200 goto free_netdev;
2201 }
2202 }
2203
2204 status = be_ctrl_init(adapter);
2205 if (status)
2206 goto free_netdev;
2207
2208 /* sync up with fw's ready state */
2209 status = be_cmd_POST(adapter);
2210 if (status)
2211 goto ctrl_clean;
2212
2213 /* tell fw we're ready to fire cmds */
2214 status = be_cmd_fw_init(adapter);
2215 if (status)
2216 goto ctrl_clean;
2217
2218 status = be_cmd_reset_function(adapter);
2219 if (status)
2220 goto ctrl_clean;
2221
2222 status = be_stats_init(adapter);
2223 if (status)
2224 goto ctrl_clean;
2225
2226 status = be_get_config(adapter);
2227 if (status)
2228 goto stats_clean;
2229
2230 INIT_DELAYED_WORK(&adapter->work, be_worker);
2231
2232 status = be_setup(adapter);
2233 if (status)
2234 goto stats_clean;
2235
2236 status = register_netdev(netdev);
2237 if (status != 0)
2238 goto unsetup;
2239
2240 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2241 return 0;
2242
2243 unsetup:
2244 be_clear(adapter);
2245 stats_clean:
2246 be_stats_cleanup(adapter);
2247 ctrl_clean:
2248 be_ctrl_cleanup(adapter);
2249 free_netdev:
2250 be_msix_disable(adapter);
2251 free_netdev(adapter->netdev);
2252 pci_set_drvdata(pdev, NULL);
2253 rel_reg:
2254 pci_release_regions(pdev);
2255 disable_dev:
2256 pci_disable_device(pdev);
2257 do_none:
2258 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2259 return status;
2260 }
2261
2262 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2263 {
2264 struct be_adapter *adapter = pci_get_drvdata(pdev);
2265 struct net_device *netdev = adapter->netdev;
2266
2267 netif_device_detach(netdev);
2268 if (netif_running(netdev)) {
2269 rtnl_lock();
2270 be_close(netdev);
2271 rtnl_unlock();
2272 }
2273 be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2274 be_clear(adapter);
2275
2276 pci_save_state(pdev);
2277 pci_disable_device(pdev);
2278 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2279 return 0;
2280 }
2281
2282 static int be_resume(struct pci_dev *pdev)
2283 {
2284 int status = 0;
2285 struct be_adapter *adapter = pci_get_drvdata(pdev);
2286 struct net_device *netdev = adapter->netdev;
2287
2288 netif_device_detach(netdev);
2289
2290 status = pci_enable_device(pdev);
2291 if (status)
2292 return status;
2293
2294 pci_set_power_state(pdev, 0);
2295 pci_restore_state(pdev);
2296
2297 /* tell fw we're ready to fire cmds */
2298 status = be_cmd_fw_init(adapter);
2299 if (status)
2300 return status;
2301
2302 be_setup(adapter);
2303 if (netif_running(netdev)) {
2304 rtnl_lock();
2305 be_open(netdev);
2306 rtnl_unlock();
2307 }
2308 netif_device_attach(netdev);
2309 return 0;
2310 }
2311
2312 static struct pci_driver be_driver = {
2313 .name = DRV_NAME,
2314 .id_table = be_dev_ids,
2315 .probe = be_probe,
2316 .remove = be_remove,
2317 .suspend = be_suspend,
2318 .resume = be_resume
2319 };
2320
2321 static int __init be_init_module(void)
2322 {
2323 if (rx_frag_size != 8192 && rx_frag_size != 4096
2324 && rx_frag_size != 2048) {
2325 printk(KERN_WARNING DRV_NAME
2326 " : Module param rx_frag_size must be 2048/4096/8192."
2327 " Using 2048\n");
2328 rx_frag_size = 2048;
2329 }
2330
2331 return pci_register_driver(&be_driver);
2332 }
2333 module_init(be_init_module);
2334
2335 static void __exit be_exit_module(void)
2336 {
2337 pci_unregister_driver(&be_driver);
2338 }
2339 module_exit(be_exit_module);
linux 2.6 git repository for openrd