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be2net: Add the new PCI IDs to PCI_DEVICE_TABLE.
[firewire-audio.git] / drivers / net / benet / be_main.c
blob43180dc210a23a24a02eb533a92d3d15e58d0f0e
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 status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
129 if (status)
130 return status;
131
132 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
133 adapter->if_handle, &adapter->pmac_id);
134 if (!status)
135 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
136
137 return status;
138 }
139
140 void netdev_stats_update(struct be_adapter *adapter)
141 {
142 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
143 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
144 struct be_port_rxf_stats *port_stats =
145 &rxf_stats->port[adapter->port_num];
146 struct net_device_stats *dev_stats = &adapter->netdev->stats;
147 struct be_erx_stats *erx_stats = &hw_stats->erx;
148
149 dev_stats->rx_packets = port_stats->rx_total_frames;
150 dev_stats->tx_packets = port_stats->tx_unicastframes +
151 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
152 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
153 (u64) port_stats->rx_bytes_lsd;
154 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
155 (u64) port_stats->tx_bytes_lsd;
156
157 /* bad pkts received */
158 dev_stats->rx_errors = port_stats->rx_crc_errors +
159 port_stats->rx_alignment_symbol_errors +
160 port_stats->rx_in_range_errors +
161 port_stats->rx_out_range_errors +
162 port_stats->rx_frame_too_long +
163 port_stats->rx_dropped_too_small +
164 port_stats->rx_dropped_too_short +
165 port_stats->rx_dropped_header_too_small +
166 port_stats->rx_dropped_tcp_length +
167 port_stats->rx_dropped_runt +
168 port_stats->rx_tcp_checksum_errs +
169 port_stats->rx_ip_checksum_errs +
170 port_stats->rx_udp_checksum_errs;
171
172 /* no space in linux buffers: best possible approximation */
173 dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
174
175 /* detailed rx errors */
176 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
177 port_stats->rx_out_range_errors +
178 port_stats->rx_frame_too_long;
179
180 /* receive ring buffer overflow */
181 dev_stats->rx_over_errors = 0;
182
183 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
184
185 /* frame alignment errors */
186 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
187
188 /* receiver fifo overrun */
189 /* drops_no_pbuf is no per i/f, it's per BE card */
190 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
191 port_stats->rx_input_fifo_overflow +
192 rxf_stats->rx_drops_no_pbuf;
193 /* receiver missed packetd */
194 dev_stats->rx_missed_errors = 0;
195
196 /* packet transmit problems */
197 dev_stats->tx_errors = 0;
198
199 /* no space available in linux */
200 dev_stats->tx_dropped = 0;
201
202 dev_stats->multicast = port_stats->rx_multicast_frames;
203 dev_stats->collisions = 0;
204
205 /* detailed tx_errors */
206 dev_stats->tx_aborted_errors = 0;
207 dev_stats->tx_carrier_errors = 0;
208 dev_stats->tx_fifo_errors = 0;
209 dev_stats->tx_heartbeat_errors = 0;
210 dev_stats->tx_window_errors = 0;
211 }
212
213 void be_link_status_update(struct be_adapter *adapter, bool link_up)
214 {
215 struct net_device *netdev = adapter->netdev;
216
217 /* If link came up or went down */
218 if (adapter->link_up != link_up) {
219 if (link_up) {
220 netif_start_queue(netdev);
221 netif_carrier_on(netdev);
222 printk(KERN_INFO "%s: Link up\n", netdev->name);
223 } else {
224 netif_stop_queue(netdev);
225 netif_carrier_off(netdev);
226 printk(KERN_INFO "%s: Link down\n", netdev->name);
227 }
228 adapter->link_up = link_up;
229 }
230 }
231
232 /* Update the EQ delay n BE based on the RX frags consumed / sec */
233 static void be_rx_eqd_update(struct be_adapter *adapter)
234 {
235 struct be_eq_obj *rx_eq = &adapter->rx_eq;
236 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
237 ulong now = jiffies;
238 u32 eqd;
239
240 if (!rx_eq->enable_aic)
241 return;
242
243 /* Wrapped around */
244 if (time_before(now, stats->rx_fps_jiffies)) {
245 stats->rx_fps_jiffies = now;
246 return;
247 }
248
249 /* Update once a second */
250 if ((now - stats->rx_fps_jiffies) < HZ)
251 return;
252
253 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
254 ((now - stats->rx_fps_jiffies) / HZ);
255
256 stats->rx_fps_jiffies = now;
257 stats->be_prev_rx_frags = stats->be_rx_frags;
258 eqd = stats->be_rx_fps / 110000;
259 eqd = eqd << 3;
260 if (eqd > rx_eq->max_eqd)
261 eqd = rx_eq->max_eqd;
262 if (eqd < rx_eq->min_eqd)
263 eqd = rx_eq->min_eqd;
264 if (eqd < 10)
265 eqd = 0;
266 if (eqd != rx_eq->cur_eqd)
267 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
268
269 rx_eq->cur_eqd = eqd;
270 }
271
272 static struct net_device_stats *be_get_stats(struct net_device *dev)
273 {
274 return &dev->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_ip_align(adapter->netdev, BE_HDR_LEN);
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_fill_rx_data(adapter, skb, rxcp);
770
771 if (do_pkt_csum(rxcp, adapter->rx_csum))
772 skb->ip_summed = CHECKSUM_NONE;
773 else
774 skb->ip_summed = CHECKSUM_UNNECESSARY;
775
776 skb->truesize = skb->len + sizeof(struct sk_buff);
777 skb->protocol = eth_type_trans(skb, adapter->netdev);
778 skb->dev = adapter->netdev;
779
780 if (vlanf) {
781 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
782 kfree_skb(skb);
783 return;
784 }
785 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
786 vid = be16_to_cpu(vid);
787 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
788 } else {
789 netif_receive_skb(skb);
790 }
791
792 return;
793 }
794
795 /* Process the RX completion indicated by rxcp when GRO is enabled */
796 static void be_rx_compl_process_gro(struct be_adapter *adapter,
797 struct be_eth_rx_compl *rxcp)
798 {
799 struct be_rx_page_info *page_info;
800 struct sk_buff *skb = NULL;
801 struct be_queue_info *rxq = &adapter->rx_obj.q;
802 struct be_eq_obj *eq_obj = &adapter->rx_eq;
803 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
804 u16 i, rxq_idx = 0, vid, j;
805 u8 vtm;
806
807 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
808 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
809 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
810 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
811 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
812
813 /* vlanf could be wrongly set in some cards.
814 * ignore if vtm is not set */
815 if ((adapter->cap == 0x400) && !vtm)
816 vlanf = 0;
817
818 skb = napi_get_frags(&eq_obj->napi);
819 if (!skb) {
820 be_rx_compl_discard(adapter, rxcp);
821 return;
822 }
823
824 remaining = pkt_size;
825 for (i = 0, j = -1; i < num_rcvd; i++) {
826 page_info = get_rx_page_info(adapter, rxq_idx);
827
828 curr_frag_len = min(remaining, rx_frag_size);
829
830 /* Coalesce all frags from the same physical page in one slot */
831 if (i == 0 || page_info->page_offset == 0) {
832 /* First frag or Fresh page */
833 j++;
834 skb_shinfo(skb)->frags[j].page = page_info->page;
835 skb_shinfo(skb)->frags[j].page_offset =
836 page_info->page_offset;
837 skb_shinfo(skb)->frags[j].size = 0;
838 } else {
839 put_page(page_info->page);
840 }
841 skb_shinfo(skb)->frags[j].size += curr_frag_len;
842
843 remaining -= curr_frag_len;
844 index_inc(&rxq_idx, rxq->len);
845 memset(page_info, 0, sizeof(*page_info));
846 }
847 BUG_ON(j > MAX_SKB_FRAGS);
848
849 skb_shinfo(skb)->nr_frags = j + 1;
850 skb->len = pkt_size;
851 skb->data_len = pkt_size;
852 skb->truesize += pkt_size;
853 skb->ip_summed = CHECKSUM_UNNECESSARY;
854
855 if (likely(!vlanf)) {
856 napi_gro_frags(&eq_obj->napi);
857 } else {
858 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
859 vid = be16_to_cpu(vid);
860
861 if (!adapter->vlan_grp || adapter->num_vlans == 0)
862 return;
863
864 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
865 }
866
867 be_rx_stats_update(adapter, pkt_size, num_rcvd);
868 return;
869 }
870
871 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
872 {
873 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
874
875 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
876 return NULL;
877
878 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
879
880 queue_tail_inc(&adapter->rx_obj.cq);
881 return rxcp;
882 }
883
884 /* To reset the valid bit, we need to reset the whole word as
885 * when walking the queue the valid entries are little-endian
886 * and invalid entries are host endian
887 */
888 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
889 {
890 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
891 }
892
893 static inline struct page *be_alloc_pages(u32 size)
894 {
895 gfp_t alloc_flags = GFP_ATOMIC;
896 u32 order = get_order(size);
897 if (order > 0)
898 alloc_flags |= __GFP_COMP;
899 return alloc_pages(alloc_flags, order);
900 }
901
902 /*
903 * Allocate a page, split it to fragments of size rx_frag_size and post as
904 * receive buffers to BE
905 */
906 static void be_post_rx_frags(struct be_adapter *adapter)
907 {
908 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
909 struct be_rx_page_info *page_info = NULL;
910 struct be_queue_info *rxq = &adapter->rx_obj.q;
911 struct page *pagep = NULL;
912 struct be_eth_rx_d *rxd;
913 u64 page_dmaaddr = 0, frag_dmaaddr;
914 u32 posted, page_offset = 0;
915
916 page_info = &page_info_tbl[rxq->head];
917 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
918 if (!pagep) {
919 pagep = be_alloc_pages(adapter->big_page_size);
920 if (unlikely(!pagep)) {
921 drvr_stats(adapter)->be_ethrx_post_fail++;
922 break;
923 }
924 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
925 adapter->big_page_size,
926 PCI_DMA_FROMDEVICE);
927 page_info->page_offset = 0;
928 } else {
929 get_page(pagep);
930 page_info->page_offset = page_offset + rx_frag_size;
931 }
932 page_offset = page_info->page_offset;
933 page_info->page = pagep;
934 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
935 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
936
937 rxd = queue_head_node(rxq);
938 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
939 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
940 queue_head_inc(rxq);
941
942 /* Any space left in the current big page for another frag? */
943 if ((page_offset + rx_frag_size + rx_frag_size) >
944 adapter->big_page_size) {
945 pagep = NULL;
946 page_info->last_page_user = true;
947 }
948 page_info = &page_info_tbl[rxq->head];
949 }
950 if (pagep)
951 page_info->last_page_user = true;
952
953 if (posted) {
954 atomic_add(posted, &rxq->used);
955 be_rxq_notify(adapter, rxq->id, posted);
956 } else if (atomic_read(&rxq->used) == 0) {
957 /* Let be_worker replenish when memory is available */
958 adapter->rx_post_starved = true;
959 }
960
961 return;
962 }
963
964 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
965 {
966 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
967
968 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
969 return NULL;
970
971 be_dws_le_to_cpu(txcp, sizeof(*txcp));
972
973 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
974
975 queue_tail_inc(tx_cq);
976 return txcp;
977 }
978
979 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
980 {
981 struct be_queue_info *txq = &adapter->tx_obj.q;
982 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
983 struct sk_buff *sent_skb;
984 u16 cur_index, num_wrbs = 0;
985
986 cur_index = txq->tail;
987 sent_skb = sent_skbs[cur_index];
988 BUG_ON(!sent_skb);
989 sent_skbs[cur_index] = NULL;
990
991 do {
992 cur_index = txq->tail;
993 num_wrbs++;
994 queue_tail_inc(txq);
995 } while (cur_index != last_index);
996
997 atomic_sub(num_wrbs, &txq->used);
998 skb_dma_unmap(&adapter->pdev->dev, sent_skb, DMA_TO_DEVICE);
999 kfree_skb(sent_skb);
1000 }
1001
1002 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1003 {
1004 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1005
1006 if (!eqe->evt)
1007 return NULL;
1008
1009 eqe->evt = le32_to_cpu(eqe->evt);
1010 queue_tail_inc(&eq_obj->q);
1011 return eqe;
1012 }
1013
1014 static int event_handle(struct be_adapter *adapter,
1015 struct be_eq_obj *eq_obj)
1016 {
1017 struct be_eq_entry *eqe;
1018 u16 num = 0;
1019
1020 while ((eqe = event_get(eq_obj)) != NULL) {
1021 eqe->evt = 0;
1022 num++;
1023 }
1024
1025 /* Deal with any spurious interrupts that come
1026 * without events
1027 */
1028 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1029 if (num)
1030 napi_schedule(&eq_obj->napi);
1031
1032 return num;
1033 }
1034
1035 /* Just read and notify events without processing them.
1036 * Used at the time of destroying event queues */
1037 static void be_eq_clean(struct be_adapter *adapter,
1038 struct be_eq_obj *eq_obj)
1039 {
1040 struct be_eq_entry *eqe;
1041 u16 num = 0;
1042
1043 while ((eqe = event_get(eq_obj)) != NULL) {
1044 eqe->evt = 0;
1045 num++;
1046 }
1047
1048 if (num)
1049 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1050 }
1051
1052 static void be_rx_q_clean(struct be_adapter *adapter)
1053 {
1054 struct be_rx_page_info *page_info;
1055 struct be_queue_info *rxq = &adapter->rx_obj.q;
1056 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1057 struct be_eth_rx_compl *rxcp;
1058 u16 tail;
1059
1060 /* First cleanup pending rx completions */
1061 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1062 be_rx_compl_discard(adapter, rxcp);
1063 be_rx_compl_reset(rxcp);
1064 be_cq_notify(adapter, rx_cq->id, true, 1);
1065 }
1066
1067 /* Then free posted rx buffer that were not used */
1068 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1069 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1070 page_info = get_rx_page_info(adapter, tail);
1071 put_page(page_info->page);
1072 memset(page_info, 0, sizeof(*page_info));
1073 }
1074 BUG_ON(atomic_read(&rxq->used));
1075 }
1076
1077 static void be_tx_compl_clean(struct be_adapter *adapter)
1078 {
1079 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1080 struct be_queue_info *txq = &adapter->tx_obj.q;
1081 struct be_eth_tx_compl *txcp;
1082 u16 end_idx, cmpl = 0, timeo = 0;
1083
1084 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1085 do {
1086 while ((txcp = be_tx_compl_get(tx_cq))) {
1087 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1088 wrb_index, txcp);
1089 be_tx_compl_process(adapter, end_idx);
1090 cmpl++;
1091 }
1092 if (cmpl) {
1093 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1094 cmpl = 0;
1095 }
1096
1097 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1098 break;
1099
1100 mdelay(1);
1101 } while (true);
1102
1103 if (atomic_read(&txq->used))
1104 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1105 atomic_read(&txq->used));
1106 }
1107
1108 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1109 {
1110 struct be_queue_info *q;
1111
1112 q = &adapter->mcc_obj.q;
1113 if (q->created)
1114 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1115 be_queue_free(adapter, q);
1116
1117 q = &adapter->mcc_obj.cq;
1118 if (q->created)
1119 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1120 be_queue_free(adapter, q);
1121 }
1122
1123 /* Must be called only after TX qs are created as MCC shares TX EQ */
1124 static int be_mcc_queues_create(struct be_adapter *adapter)
1125 {
1126 struct be_queue_info *q, *cq;
1127
1128 /* Alloc MCC compl queue */
1129 cq = &adapter->mcc_obj.cq;
1130 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1131 sizeof(struct be_mcc_compl)))
1132 goto err;
1133
1134 /* Ask BE to create MCC compl queue; share TX's eq */
1135 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1136 goto mcc_cq_free;
1137
1138 /* Alloc MCC queue */
1139 q = &adapter->mcc_obj.q;
1140 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1141 goto mcc_cq_destroy;
1142
1143 /* Ask BE to create MCC queue */
1144 if (be_cmd_mccq_create(adapter, q, cq))
1145 goto mcc_q_free;
1146
1147 return 0;
1148
1149 mcc_q_free:
1150 be_queue_free(adapter, q);
1151 mcc_cq_destroy:
1152 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1153 mcc_cq_free:
1154 be_queue_free(adapter, cq);
1155 err:
1156 return -1;
1157 }
1158
1159 static void be_tx_queues_destroy(struct be_adapter *adapter)
1160 {
1161 struct be_queue_info *q;
1162
1163 q = &adapter->tx_obj.q;
1164 if (q->created)
1165 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1166 be_queue_free(adapter, q);
1167
1168 q = &adapter->tx_obj.cq;
1169 if (q->created)
1170 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1171 be_queue_free(adapter, q);
1172
1173 /* Clear any residual events */
1174 be_eq_clean(adapter, &adapter->tx_eq);
1175
1176 q = &adapter->tx_eq.q;
1177 if (q->created)
1178 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1179 be_queue_free(adapter, q);
1180 }
1181
1182 static int be_tx_queues_create(struct be_adapter *adapter)
1183 {
1184 struct be_queue_info *eq, *q, *cq;
1185
1186 adapter->tx_eq.max_eqd = 0;
1187 adapter->tx_eq.min_eqd = 0;
1188 adapter->tx_eq.cur_eqd = 96;
1189 adapter->tx_eq.enable_aic = false;
1190 /* Alloc Tx Event queue */
1191 eq = &adapter->tx_eq.q;
1192 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1193 return -1;
1194
1195 /* Ask BE to create Tx Event queue */
1196 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1197 goto tx_eq_free;
1198 /* Alloc TX eth compl queue */
1199 cq = &adapter->tx_obj.cq;
1200 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1201 sizeof(struct be_eth_tx_compl)))
1202 goto tx_eq_destroy;
1203
1204 /* Ask BE to create Tx eth compl queue */
1205 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1206 goto tx_cq_free;
1207
1208 /* Alloc TX eth queue */
1209 q = &adapter->tx_obj.q;
1210 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1211 goto tx_cq_destroy;
1212
1213 /* Ask BE to create Tx eth queue */
1214 if (be_cmd_txq_create(adapter, q, cq))
1215 goto tx_q_free;
1216 return 0;
1217
1218 tx_q_free:
1219 be_queue_free(adapter, q);
1220 tx_cq_destroy:
1221 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1222 tx_cq_free:
1223 be_queue_free(adapter, cq);
1224 tx_eq_destroy:
1225 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1226 tx_eq_free:
1227 be_queue_free(adapter, eq);
1228 return -1;
1229 }
1230
1231 static void be_rx_queues_destroy(struct be_adapter *adapter)
1232 {
1233 struct be_queue_info *q;
1234
1235 q = &adapter->rx_obj.q;
1236 if (q->created) {
1237 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1238 be_rx_q_clean(adapter);
1239 }
1240 be_queue_free(adapter, q);
1241
1242 q = &adapter->rx_obj.cq;
1243 if (q->created)
1244 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1245 be_queue_free(adapter, q);
1246
1247 /* Clear any residual events */
1248 be_eq_clean(adapter, &adapter->rx_eq);
1249
1250 q = &adapter->rx_eq.q;
1251 if (q->created)
1252 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1253 be_queue_free(adapter, q);
1254 }
1255
1256 static int be_rx_queues_create(struct be_adapter *adapter)
1257 {
1258 struct be_queue_info *eq, *q, *cq;
1259 int rc;
1260
1261 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1262 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1263 adapter->rx_eq.min_eqd = 0;
1264 adapter->rx_eq.cur_eqd = 0;
1265 adapter->rx_eq.enable_aic = true;
1266
1267 /* Alloc Rx Event queue */
1268 eq = &adapter->rx_eq.q;
1269 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1270 sizeof(struct be_eq_entry));
1271 if (rc)
1272 return rc;
1273
1274 /* Ask BE to create Rx Event queue */
1275 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1276 if (rc)
1277 goto rx_eq_free;
1278
1279 /* Alloc RX eth compl queue */
1280 cq = &adapter->rx_obj.cq;
1281 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1282 sizeof(struct be_eth_rx_compl));
1283 if (rc)
1284 goto rx_eq_destroy;
1285
1286 /* Ask BE to create Rx eth compl queue */
1287 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1288 if (rc)
1289 goto rx_cq_free;
1290
1291 /* Alloc RX eth queue */
1292 q = &adapter->rx_obj.q;
1293 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1294 if (rc)
1295 goto rx_cq_destroy;
1296
1297 /* Ask BE to create Rx eth queue */
1298 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1299 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1300 if (rc)
1301 goto rx_q_free;
1302
1303 return 0;
1304 rx_q_free:
1305 be_queue_free(adapter, q);
1306 rx_cq_destroy:
1307 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1308 rx_cq_free:
1309 be_queue_free(adapter, cq);
1310 rx_eq_destroy:
1311 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1312 rx_eq_free:
1313 be_queue_free(adapter, eq);
1314 return rc;
1315 }
1316
1317 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1318 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1319 {
1320 return eq_id - 8 * be_pci_func(adapter);
1321 }
1322
1323 static irqreturn_t be_intx(int irq, void *dev)
1324 {
1325 struct be_adapter *adapter = dev;
1326 int isr;
1327
1328 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1329 be_pci_func(adapter) * CEV_ISR_SIZE);
1330 if (!isr)
1331 return IRQ_NONE;
1332
1333 event_handle(adapter, &adapter->tx_eq);
1334 event_handle(adapter, &adapter->rx_eq);
1335
1336 return IRQ_HANDLED;
1337 }
1338
1339 static irqreturn_t be_msix_rx(int irq, void *dev)
1340 {
1341 struct be_adapter *adapter = dev;
1342
1343 event_handle(adapter, &adapter->rx_eq);
1344
1345 return IRQ_HANDLED;
1346 }
1347
1348 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1349 {
1350 struct be_adapter *adapter = dev;
1351
1352 event_handle(adapter, &adapter->tx_eq);
1353
1354 return IRQ_HANDLED;
1355 }
1356
1357 static inline bool do_gro(struct be_adapter *adapter,
1358 struct be_eth_rx_compl *rxcp)
1359 {
1360 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1361 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1362
1363 if (err)
1364 drvr_stats(adapter)->be_rxcp_err++;
1365
1366 return (tcp_frame && !err) ? true : false;
1367 }
1368
1369 int be_poll_rx(struct napi_struct *napi, int budget)
1370 {
1371 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1372 struct be_adapter *adapter =
1373 container_of(rx_eq, struct be_adapter, rx_eq);
1374 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1375 struct be_eth_rx_compl *rxcp;
1376 u32 work_done;
1377
1378 for (work_done = 0; work_done < budget; work_done++) {
1379 rxcp = be_rx_compl_get(adapter);
1380 if (!rxcp)
1381 break;
1382
1383 if (do_gro(adapter, rxcp))
1384 be_rx_compl_process_gro(adapter, rxcp);
1385 else
1386 be_rx_compl_process(adapter, rxcp);
1387
1388 be_rx_compl_reset(rxcp);
1389 }
1390
1391 /* Refill the queue */
1392 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1393 be_post_rx_frags(adapter);
1394
1395 /* All consumed */
1396 if (work_done < budget) {
1397 napi_complete(napi);
1398 be_cq_notify(adapter, rx_cq->id, true, work_done);
1399 } else {
1400 /* More to be consumed; continue with interrupts disabled */
1401 be_cq_notify(adapter, rx_cq->id, false, work_done);
1402 }
1403 return work_done;
1404 }
1405
1406 void be_process_tx(struct be_adapter *adapter)
1407 {
1408 struct be_queue_info *txq = &adapter->tx_obj.q;
1409 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1410 struct be_eth_tx_compl *txcp;
1411 u32 num_cmpl = 0;
1412 u16 end_idx;
1413
1414 while ((txcp = be_tx_compl_get(tx_cq))) {
1415 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1416 wrb_index, txcp);
1417 be_tx_compl_process(adapter, end_idx);
1418 num_cmpl++;
1419 }
1420
1421 if (num_cmpl) {
1422 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1423
1424 /* As Tx wrbs have been freed up, wake up netdev queue if
1425 * it was stopped due to lack of tx wrbs.
1426 */
1427 if (netif_queue_stopped(adapter->netdev) &&
1428 atomic_read(&txq->used) < txq->len / 2) {
1429 netif_wake_queue(adapter->netdev);
1430 }
1431
1432 drvr_stats(adapter)->be_tx_events++;
1433 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1434 }
1435 }
1436
1437 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1438 * For TX/MCC we don't honour budget; consume everything
1439 */
1440 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1441 {
1442 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1443 struct be_adapter *adapter =
1444 container_of(tx_eq, struct be_adapter, tx_eq);
1445
1446 napi_complete(napi);
1447
1448 be_process_tx(adapter);
1449
1450 be_process_mcc(adapter);
1451
1452 return 1;
1453 }
1454
1455 static void be_worker(struct work_struct *work)
1456 {
1457 struct be_adapter *adapter =
1458 container_of(work, struct be_adapter, work.work);
1459
1460 be_cmd_get_stats(adapter, &adapter->stats.cmd);
1461
1462 /* Set EQ delay */
1463 be_rx_eqd_update(adapter);
1464
1465 be_tx_rate_update(adapter);
1466 be_rx_rate_update(adapter);
1467
1468 if (adapter->rx_post_starved) {
1469 adapter->rx_post_starved = false;
1470 be_post_rx_frags(adapter);
1471 }
1472
1473 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1474 }
1475
1476 static void be_msix_enable(struct be_adapter *adapter)
1477 {
1478 int i, status;
1479
1480 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1481 adapter->msix_entries[i].entry = i;
1482
1483 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1484 BE_NUM_MSIX_VECTORS);
1485 if (status == 0)
1486 adapter->msix_enabled = true;
1487 return;
1488 }
1489
1490 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1491 {
1492 return adapter->msix_entries[
1493 be_evt_bit_get(adapter, eq_id)].vector;
1494 }
1495
1496 static int be_request_irq(struct be_adapter *adapter,
1497 struct be_eq_obj *eq_obj,
1498 void *handler, char *desc)
1499 {
1500 struct net_device *netdev = adapter->netdev;
1501 int vec;
1502
1503 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1504 vec = be_msix_vec_get(adapter, eq_obj->q.id);
1505 return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1506 }
1507
1508 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1509 {
1510 int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1511 free_irq(vec, adapter);
1512 }
1513
1514 static int be_msix_register(struct be_adapter *adapter)
1515 {
1516 int status;
1517
1518 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1519 if (status)
1520 goto err;
1521
1522 status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1523 if (status)
1524 goto free_tx_irq;
1525
1526 return 0;
1527
1528 free_tx_irq:
1529 be_free_irq(adapter, &adapter->tx_eq);
1530 err:
1531 dev_warn(&adapter->pdev->dev,
1532 "MSIX Request IRQ failed - err %d\n", status);
1533 pci_disable_msix(adapter->pdev);
1534 adapter->msix_enabled = false;
1535 return status;
1536 }
1537
1538 static int be_irq_register(struct be_adapter *adapter)
1539 {
1540 struct net_device *netdev = adapter->netdev;
1541 int status;
1542
1543 if (adapter->msix_enabled) {
1544 status = be_msix_register(adapter);
1545 if (status == 0)
1546 goto done;
1547 }
1548
1549 /* INTx */
1550 netdev->irq = adapter->pdev->irq;
1551 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1552 adapter);
1553 if (status) {
1554 dev_err(&adapter->pdev->dev,
1555 "INTx request IRQ failed - err %d\n", status);
1556 return status;
1557 }
1558 done:
1559 adapter->isr_registered = true;
1560 return 0;
1561 }
1562
1563 static void be_irq_unregister(struct be_adapter *adapter)
1564 {
1565 struct net_device *netdev = adapter->netdev;
1566
1567 if (!adapter->isr_registered)
1568 return;
1569
1570 /* INTx */
1571 if (!adapter->msix_enabled) {
1572 free_irq(netdev->irq, adapter);
1573 goto done;
1574 }
1575
1576 /* MSIx */
1577 be_free_irq(adapter, &adapter->tx_eq);
1578 be_free_irq(adapter, &adapter->rx_eq);
1579 done:
1580 adapter->isr_registered = false;
1581 return;
1582 }
1583
1584 static int be_open(struct net_device *netdev)
1585 {
1586 struct be_adapter *adapter = netdev_priv(netdev);
1587 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1588 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1589 bool link_up;
1590 int status;
1591 u8 mac_speed;
1592 u16 link_speed;
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, &mac_speed,
1612 &link_speed);
1613 if (status)
1614 return status;
1615 be_link_status_update(adapter, link_up);
1616
1617 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1618 return 0;
1619 }
1620
1621 static int be_setup(struct be_adapter *adapter)
1622 {
1623 struct net_device *netdev = adapter->netdev;
1624 u32 cap_flags, en_flags;
1625 int status;
1626
1627 cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1628 BE_IF_FLAGS_MCAST_PROMISCUOUS |
1629 BE_IF_FLAGS_PROMISCUOUS |
1630 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1631 en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1632 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1633
1634 status = be_cmd_if_create(adapter, cap_flags, en_flags,
1635 netdev->dev_addr, false/* pmac_invalid */,
1636 &adapter->if_handle, &adapter->pmac_id);
1637 if (status != 0)
1638 goto do_none;
1639
1640 status = be_tx_queues_create(adapter);
1641 if (status != 0)
1642 goto if_destroy;
1643
1644 status = be_rx_queues_create(adapter);
1645 if (status != 0)
1646 goto tx_qs_destroy;
1647
1648 status = be_mcc_queues_create(adapter);
1649 if (status != 0)
1650 goto rx_qs_destroy;
1651
1652 status = be_vid_config(adapter);
1653 if (status != 0)
1654 goto mccqs_destroy;
1655
1656 status = be_cmd_set_flow_control(adapter, true, true);
1657 if (status != 0)
1658 goto mccqs_destroy;
1659 return 0;
1660
1661 mccqs_destroy:
1662 be_mcc_queues_destroy(adapter);
1663 rx_qs_destroy:
1664 be_rx_queues_destroy(adapter);
1665 tx_qs_destroy:
1666 be_tx_queues_destroy(adapter);
1667 if_destroy:
1668 be_cmd_if_destroy(adapter, adapter->if_handle);
1669 do_none:
1670 return status;
1671 }
1672
1673 static int be_clear(struct be_adapter *adapter)
1674 {
1675 be_mcc_queues_destroy(adapter);
1676 be_rx_queues_destroy(adapter);
1677 be_tx_queues_destroy(adapter);
1678
1679 be_cmd_if_destroy(adapter, adapter->if_handle);
1680
1681 return 0;
1682 }
1683
1684 static int be_close(struct net_device *netdev)
1685 {
1686 struct be_adapter *adapter = netdev_priv(netdev);
1687 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1688 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1689 int vec;
1690
1691 cancel_delayed_work_sync(&adapter->work);
1692
1693 netif_stop_queue(netdev);
1694 netif_carrier_off(netdev);
1695 adapter->link_up = false;
1696
1697 be_intr_set(adapter, false);
1698
1699 if (adapter->msix_enabled) {
1700 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1701 synchronize_irq(vec);
1702 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1703 synchronize_irq(vec);
1704 } else {
1705 synchronize_irq(netdev->irq);
1706 }
1707 be_irq_unregister(adapter);
1708
1709 napi_disable(&rx_eq->napi);
1710 napi_disable(&tx_eq->napi);
1711
1712 /* Wait for all pending tx completions to arrive so that
1713 * all tx skbs are freed.
1714 */
1715 be_tx_compl_clean(adapter);
1716
1717 return 0;
1718 }
1719
1720 #define FW_FILE_HDR_SIGN "ServerEngines Corp. "
1721 char flash_cookie[2][16] = {"*** SE FLAS",
1722 "H DIRECTORY *** "};
1723 static int be_flash_image(struct be_adapter *adapter,
1724 const struct firmware *fw,
1725 struct be_dma_mem *flash_cmd, u32 flash_type)
1726 {
1727 int status;
1728 u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1729 int num_bytes;
1730 const u8 *p = fw->data;
1731 struct be_cmd_write_flashrom *req = flash_cmd->va;
1732
1733 switch (flash_type) {
1734 case FLASHROM_TYPE_ISCSI_ACTIVE:
1735 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1736 image_size = FLASH_IMAGE_MAX_SIZE;
1737 break;
1738 case FLASHROM_TYPE_ISCSI_BACKUP:
1739 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1740 image_size = FLASH_IMAGE_MAX_SIZE;
1741 break;
1742 case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1743 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1744 image_size = FLASH_IMAGE_MAX_SIZE;
1745 break;
1746 case FLASHROM_TYPE_FCOE_FW_BACKUP:
1747 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1748 image_size = FLASH_IMAGE_MAX_SIZE;
1749 break;
1750 case FLASHROM_TYPE_BIOS:
1751 image_offset = FLASH_iSCSI_BIOS_START;
1752 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1753 break;
1754 case FLASHROM_TYPE_FCOE_BIOS:
1755 image_offset = FLASH_FCoE_BIOS_START;
1756 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1757 break;
1758 case FLASHROM_TYPE_PXE_BIOS:
1759 image_offset = FLASH_PXE_BIOS_START;
1760 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1761 break;
1762 default:
1763 return 0;
1764 }
1765
1766 p += sizeof(struct flash_file_hdr) + image_offset;
1767 if (p + image_size > fw->data + fw->size)
1768 return -1;
1769
1770 total_bytes = image_size;
1771
1772 while (total_bytes) {
1773 if (total_bytes > 32*1024)
1774 num_bytes = 32*1024;
1775 else
1776 num_bytes = total_bytes;
1777 total_bytes -= num_bytes;
1778
1779 if (!total_bytes)
1780 flash_op = FLASHROM_OPER_FLASH;
1781 else
1782 flash_op = FLASHROM_OPER_SAVE;
1783 memcpy(req->params.data_buf, p, num_bytes);
1784 p += num_bytes;
1785 status = be_cmd_write_flashrom(adapter, flash_cmd,
1786 flash_type, flash_op, num_bytes);
1787 if (status) {
1788 dev_err(&adapter->pdev->dev,
1789 "cmd to write to flash rom failed. type/op %d/%d\n",
1790 flash_type, flash_op);
1791 return -1;
1792 }
1793 yield();
1794 }
1795
1796 return 0;
1797 }
1798
1799 int be_load_fw(struct be_adapter *adapter, u8 *func)
1800 {
1801 char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1802 const struct firmware *fw;
1803 struct flash_file_hdr *fhdr;
1804 struct flash_section_info *fsec = NULL;
1805 struct be_dma_mem flash_cmd;
1806 int status;
1807 const u8 *p;
1808 bool entry_found = false;
1809 int flash_type;
1810 char fw_ver[FW_VER_LEN];
1811 char fw_cfg;
1812
1813 status = be_cmd_get_fw_ver(adapter, fw_ver);
1814 if (status)
1815 return status;
1816
1817 fw_cfg = *(fw_ver + 2);
1818 if (fw_cfg == '0')
1819 fw_cfg = '1';
1820 strcpy(fw_file, func);
1821
1822 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1823 if (status)
1824 goto fw_exit;
1825
1826 p = fw->data;
1827 fhdr = (struct flash_file_hdr *) p;
1828 if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1829 dev_err(&adapter->pdev->dev,
1830 "Firmware(%s) load error (signature did not match)\n",
1831 fw_file);
1832 status = -1;
1833 goto fw_exit;
1834 }
1835
1836 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1837
1838 p += sizeof(struct flash_file_hdr);
1839 while (p < (fw->data + fw->size)) {
1840 fsec = (struct flash_section_info *)p;
1841 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1842 entry_found = true;
1843 break;
1844 }
1845 p += 32;
1846 }
1847
1848 if (!entry_found) {
1849 status = -1;
1850 dev_err(&adapter->pdev->dev,
1851 "Flash cookie not found in firmware image\n");
1852 goto fw_exit;
1853 }
1854
1855 flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1856 flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1857 &flash_cmd.dma);
1858 if (!flash_cmd.va) {
1859 status = -ENOMEM;
1860 dev_err(&adapter->pdev->dev,
1861 "Memory allocation failure while flashing\n");
1862 goto fw_exit;
1863 }
1864
1865 for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1866 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1867 status = be_flash_image(adapter, fw, &flash_cmd,
1868 flash_type);
1869 if (status)
1870 break;
1871 }
1872
1873 pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1874 flash_cmd.dma);
1875 if (status) {
1876 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1877 goto fw_exit;
1878 }
1879
1880 dev_info(&adapter->pdev->dev, "Firmware flashed succesfully\n");
1881
1882 fw_exit:
1883 release_firmware(fw);
1884 return status;
1885 }
1886
1887 static struct net_device_ops be_netdev_ops = {
1888 .ndo_open = be_open,
1889 .ndo_stop = be_close,
1890 .ndo_start_xmit = be_xmit,
1891 .ndo_get_stats = be_get_stats,
1892 .ndo_set_rx_mode = be_set_multicast_list,
1893 .ndo_set_mac_address = be_mac_addr_set,
1894 .ndo_change_mtu = be_change_mtu,
1895 .ndo_validate_addr = eth_validate_addr,
1896 .ndo_vlan_rx_register = be_vlan_register,
1897 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1898 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1899 };
1900
1901 static void be_netdev_init(struct net_device *netdev)
1902 {
1903 struct be_adapter *adapter = netdev_priv(netdev);
1904
1905 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1906 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
1907 NETIF_F_GRO;
1908
1909 netdev->flags |= IFF_MULTICAST;
1910
1911 adapter->rx_csum = true;
1912
1913 netif_set_gso_max_size(netdev, 65535);
1914
1915 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1916
1917 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1918
1919 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1920 BE_NAPI_WEIGHT);
1921 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1922 BE_NAPI_WEIGHT);
1923
1924 netif_carrier_off(netdev);
1925 netif_stop_queue(netdev);
1926 }
1927
1928 static void be_unmap_pci_bars(struct be_adapter *adapter)
1929 {
1930 if (adapter->csr)
1931 iounmap(adapter->csr);
1932 if (adapter->db)
1933 iounmap(adapter->db);
1934 if (adapter->pcicfg)
1935 iounmap(adapter->pcicfg);
1936 }
1937
1938 static int be_map_pci_bars(struct be_adapter *adapter)
1939 {
1940 u8 __iomem *addr;
1941
1942 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1943 pci_resource_len(adapter->pdev, 2));
1944 if (addr == NULL)
1945 return -ENOMEM;
1946 adapter->csr = addr;
1947
1948 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1949 128 * 1024);
1950 if (addr == NULL)
1951 goto pci_map_err;
1952 adapter->db = addr;
1953
1954 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1955 pci_resource_len(adapter->pdev, 1));
1956 if (addr == NULL)
1957 goto pci_map_err;
1958 adapter->pcicfg = addr;
1959
1960 return 0;
1961 pci_map_err:
1962 be_unmap_pci_bars(adapter);
1963 return -ENOMEM;
1964 }
1965
1966
1967 static void be_ctrl_cleanup(struct be_adapter *adapter)
1968 {
1969 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1970
1971 be_unmap_pci_bars(adapter);
1972
1973 if (mem->va)
1974 pci_free_consistent(adapter->pdev, mem->size,
1975 mem->va, mem->dma);
1976 }
1977
1978 static int be_ctrl_init(struct be_adapter *adapter)
1979 {
1980 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1981 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1982 int status;
1983
1984 status = be_map_pci_bars(adapter);
1985 if (status)
1986 return status;
1987
1988 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1989 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1990 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1991 if (!mbox_mem_alloc->va) {
1992 be_unmap_pci_bars(adapter);
1993 return -1;
1994 }
1995 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1996 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1997 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1998 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1999 spin_lock_init(&adapter->mbox_lock);
2000 spin_lock_init(&adapter->mcc_lock);
2001 spin_lock_init(&adapter->mcc_cq_lock);
2002
2003 return 0;
2004 }
2005
2006 static void be_stats_cleanup(struct be_adapter *adapter)
2007 {
2008 struct be_stats_obj *stats = &adapter->stats;
2009 struct be_dma_mem *cmd = &stats->cmd;
2010
2011 if (cmd->va)
2012 pci_free_consistent(adapter->pdev, cmd->size,
2013 cmd->va, cmd->dma);
2014 }
2015
2016 static int be_stats_init(struct be_adapter *adapter)
2017 {
2018 struct be_stats_obj *stats = &adapter->stats;
2019 struct be_dma_mem *cmd = &stats->cmd;
2020
2021 cmd->size = sizeof(struct be_cmd_req_get_stats);
2022 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2023 if (cmd->va == NULL)
2024 return -1;
2025 return 0;
2026 }
2027
2028 static void __devexit be_remove(struct pci_dev *pdev)
2029 {
2030 struct be_adapter *adapter = pci_get_drvdata(pdev);
2031 if (!adapter)
2032 return;
2033
2034 unregister_netdev(adapter->netdev);
2035
2036 be_clear(adapter);
2037
2038 be_stats_cleanup(adapter);
2039
2040 be_ctrl_cleanup(adapter);
2041
2042 if (adapter->msix_enabled) {
2043 pci_disable_msix(adapter->pdev);
2044 adapter->msix_enabled = false;
2045 }
2046
2047 pci_set_drvdata(pdev, NULL);
2048 pci_release_regions(pdev);
2049 pci_disable_device(pdev);
2050
2051 free_netdev(adapter->netdev);
2052 }
2053
2054 static int be_hw_up(struct be_adapter *adapter)
2055 {
2056 int status;
2057
2058 status = be_cmd_POST(adapter);
2059 if (status)
2060 return status;
2061
2062 status = be_cmd_reset_function(adapter);
2063 if (status)
2064 return status;
2065
2066 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2067 if (status)
2068 return status;
2069
2070 status = be_cmd_query_fw_cfg(adapter,
2071 &adapter->port_num, &adapter->cap);
2072 return status;
2073 }
2074
2075 static int __devinit be_probe(struct pci_dev *pdev,
2076 const struct pci_device_id *pdev_id)
2077 {
2078 int status = 0;
2079 struct be_adapter *adapter;
2080 struct net_device *netdev;
2081 u8 mac[ETH_ALEN];
2082
2083 status = pci_enable_device(pdev);
2084 if (status)
2085 goto do_none;
2086
2087 status = pci_request_regions(pdev, DRV_NAME);
2088 if (status)
2089 goto disable_dev;
2090 pci_set_master(pdev);
2091
2092 netdev = alloc_etherdev(sizeof(struct be_adapter));
2093 if (netdev == NULL) {
2094 status = -ENOMEM;
2095 goto rel_reg;
2096 }
2097 adapter = netdev_priv(netdev);
2098 adapter->pdev = pdev;
2099 pci_set_drvdata(pdev, adapter);
2100 adapter->netdev = netdev;
2101
2102 be_msix_enable(adapter);
2103
2104 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2105 if (!status) {
2106 netdev->features |= NETIF_F_HIGHDMA;
2107 } else {
2108 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2109 if (status) {
2110 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2111 goto free_netdev;
2112 }
2113 }
2114
2115 status = be_ctrl_init(adapter);
2116 if (status)
2117 goto free_netdev;
2118
2119 status = be_stats_init(adapter);
2120 if (status)
2121 goto ctrl_clean;
2122
2123 status = be_hw_up(adapter);
2124 if (status)
2125 goto stats_clean;
2126
2127 status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
2128 true /* permanent */, 0);
2129 if (status)
2130 goto stats_clean;
2131 memcpy(netdev->dev_addr, mac, ETH_ALEN);
2132
2133 INIT_DELAYED_WORK(&adapter->work, be_worker);
2134 be_netdev_init(netdev);
2135 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
2136
2137 status = be_setup(adapter);
2138 if (status)
2139 goto stats_clean;
2140 status = register_netdev(netdev);
2141 if (status != 0)
2142 goto unsetup;
2143
2144 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2145 return 0;
2146
2147 unsetup:
2148 be_clear(adapter);
2149 stats_clean:
2150 be_stats_cleanup(adapter);
2151 ctrl_clean:
2152 be_ctrl_cleanup(adapter);
2153 free_netdev:
2154 free_netdev(adapter->netdev);
2155 rel_reg:
2156 pci_release_regions(pdev);
2157 disable_dev:
2158 pci_disable_device(pdev);
2159 do_none:
2160 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2161 return status;
2162 }
2163
2164 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2165 {
2166 struct be_adapter *adapter = pci_get_drvdata(pdev);
2167 struct net_device *netdev = adapter->netdev;
2168
2169 netif_device_detach(netdev);
2170 if (netif_running(netdev)) {
2171 rtnl_lock();
2172 be_close(netdev);
2173 rtnl_unlock();
2174 }
2175 be_clear(adapter);
2176
2177 pci_save_state(pdev);
2178 pci_disable_device(pdev);
2179 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2180 return 0;
2181 }
2182
2183 static int be_resume(struct pci_dev *pdev)
2184 {
2185 int status = 0;
2186 struct be_adapter *adapter = pci_get_drvdata(pdev);
2187 struct net_device *netdev = adapter->netdev;
2188
2189 netif_device_detach(netdev);
2190
2191 status = pci_enable_device(pdev);
2192 if (status)
2193 return status;
2194
2195 pci_set_power_state(pdev, 0);
2196 pci_restore_state(pdev);
2197
2198 be_setup(adapter);
2199 if (netif_running(netdev)) {
2200 rtnl_lock();
2201 be_open(netdev);
2202 rtnl_unlock();
2203 }
2204 netif_device_attach(netdev);
2205 return 0;
2206 }
2207
2208 static struct pci_driver be_driver = {
2209 .name = DRV_NAME,
2210 .id_table = be_dev_ids,
2211 .probe = be_probe,
2212 .remove = be_remove,
2213 .suspend = be_suspend,
2214 .resume = be_resume
2215 };
2216
2217 static int __init be_init_module(void)
2218 {
2219 if (rx_frag_size != 8192 && rx_frag_size != 4096
2220 && rx_frag_size != 2048) {
2221 printk(KERN_WARNING DRV_NAME
2222 " : Module param rx_frag_size must be 2048/4096/8192."
2223 " Using 2048\n");
2224 rx_frag_size = 2048;
2225 }
2226
2227 return pci_register_driver(&be_driver);
2228 }
2229 module_init(be_init_module);
2230
2231 static void __exit be_exit_module(void)
2232 {
2233 pci_unregister_driver(&be_driver);
2234 }
2235 module_exit(be_exit_module);
AMDTP streaming driver for the Linux FireWire stack (Juju)