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be2net: Fix to avoid a crash seen on PPC with LRO and Jumbo frames.
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / benet / be_main.c
blobdb19d17bccd957a4a1a5c28a7aa016525245fa35
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 <asm/div64.h>
20
21 MODULE_VERSION(DRV_VER);
22 MODULE_DEVICE_TABLE(pci, be_dev_ids);
23 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
24 MODULE_AUTHOR("ServerEngines Corporation");
25 MODULE_LICENSE("GPL");
26
27 static unsigned int rx_frag_size = 2048;
28 module_param(rx_frag_size, uint, S_IRUGO);
29 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
30
31 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
32 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
33 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
34 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
35 { 0 }
36 };
37 MODULE_DEVICE_TABLE(pci, be_dev_ids);
38
39 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
40 {
41 struct be_dma_mem *mem = &q->dma_mem;
42 if (mem->va)
43 pci_free_consistent(adapter->pdev, mem->size,
44 mem->va, mem->dma);
45 }
46
47 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
48 u16 len, u16 entry_size)
49 {
50 struct be_dma_mem *mem = &q->dma_mem;
51
52 memset(q, 0, sizeof(*q));
53 q->len = len;
54 q->entry_size = entry_size;
55 mem->size = len * entry_size;
56 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
57 if (!mem->va)
58 return -1;
59 memset(mem->va, 0, mem->size);
60 return 0;
61 }
62
63 static inline void *queue_head_node(struct be_queue_info *q)
64 {
65 return q->dma_mem.va + q->head * q->entry_size;
66 }
67
68 static inline void *queue_tail_node(struct be_queue_info *q)
69 {
70 return q->dma_mem.va + q->tail * q->entry_size;
71 }
72
73 static inline void queue_head_inc(struct be_queue_info *q)
74 {
75 index_inc(&q->head, q->len);
76 }
77
78 static inline void queue_tail_inc(struct be_queue_info *q)
79 {
80 index_inc(&q->tail, q->len);
81 }
82
83 static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
84 {
85 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
86 u32 reg = ioread32(addr);
87 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
88 if (!enabled && enable) {
89 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
90 } else if (enabled && !enable) {
91 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
92 } else {
93 printk(KERN_WARNING DRV_NAME
94 ": bad value in membar_int_ctrl reg=0x%x\n", reg);
95 return;
96 }
97 iowrite32(reg, addr);
98 }
99
100 static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
101 {
102 u32 val = 0;
103 val |= qid & DB_RQ_RING_ID_MASK;
104 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
105 iowrite32(val, ctrl->db + DB_RQ_OFFSET);
106 }
107
108 static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
109 {
110 u32 val = 0;
111 val |= qid & DB_TXULP_RING_ID_MASK;
112 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
113 iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
114 }
115
116 static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
117 bool arm, bool clear_int, u16 num_popped)
118 {
119 u32 val = 0;
120 val |= qid & DB_EQ_RING_ID_MASK;
121 if (arm)
122 val |= 1 << DB_EQ_REARM_SHIFT;
123 if (clear_int)
124 val |= 1 << DB_EQ_CLR_SHIFT;
125 val |= 1 << DB_EQ_EVNT_SHIFT;
126 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
127 iowrite32(val, ctrl->db + DB_EQ_OFFSET);
128 }
129
130 static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
131 bool arm, u16 num_popped)
132 {
133 u32 val = 0;
134 val |= qid & DB_CQ_RING_ID_MASK;
135 if (arm)
136 val |= 1 << DB_CQ_REARM_SHIFT;
137 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
138 iowrite32(val, ctrl->db + DB_CQ_OFFSET);
139 }
140
141
142 static int be_mac_addr_set(struct net_device *netdev, void *p)
143 {
144 struct be_adapter *adapter = netdev_priv(netdev);
145 struct sockaddr *addr = p;
146 int status = 0;
147
148 if (netif_running(netdev)) {
149 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
150 adapter->pmac_id);
151 if (status)
152 return status;
153
154 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
155 adapter->if_handle, &adapter->pmac_id);
156 }
157
158 if (!status)
159 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
160
161 return status;
162 }
163
164 static void netdev_stats_update(struct be_adapter *adapter)
165 {
166 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
167 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
168 struct be_port_rxf_stats *port_stats =
169 &rxf_stats->port[adapter->port_num];
170 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
171
172 dev_stats->rx_packets = port_stats->rx_total_frames;
173 dev_stats->tx_packets = port_stats->tx_unicastframes +
174 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
175 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
176 (u64) port_stats->rx_bytes_lsd;
177 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
178 (u64) port_stats->tx_bytes_lsd;
179
180 /* bad pkts received */
181 dev_stats->rx_errors = port_stats->rx_crc_errors +
182 port_stats->rx_alignment_symbol_errors +
183 port_stats->rx_in_range_errors +
184 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
185
186 /* packet transmit problems */
187 dev_stats->tx_errors = 0;
188
189 /* no space in linux buffers */
190 dev_stats->rx_dropped = 0;
191
192 /* no space available in linux */
193 dev_stats->tx_dropped = 0;
194
195 dev_stats->multicast = port_stats->tx_multicastframes;
196 dev_stats->collisions = 0;
197
198 /* detailed rx errors */
199 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
200 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
201 /* receive ring buffer overflow */
202 dev_stats->rx_over_errors = 0;
203 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
204
205 /* frame alignment errors */
206 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
207 /* receiver fifo overrun */
208 /* drops_no_pbuf is no per i/f, it's per BE card */
209 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
210 port_stats->rx_input_fifo_overflow +
211 rxf_stats->rx_drops_no_pbuf;
212 /* receiver missed packetd */
213 dev_stats->rx_missed_errors = 0;
214 /* detailed tx_errors */
215 dev_stats->tx_aborted_errors = 0;
216 dev_stats->tx_carrier_errors = 0;
217 dev_stats->tx_fifo_errors = 0;
218 dev_stats->tx_heartbeat_errors = 0;
219 dev_stats->tx_window_errors = 0;
220 }
221
222 static void be_link_status_update(struct be_adapter *adapter)
223 {
224 struct be_link_info *prev = &adapter->link;
225 struct be_link_info now = { 0 };
226 struct net_device *netdev = adapter->netdev;
227
228 be_cmd_link_status_query(&adapter->ctrl, &now);
229
230 /* If link came up or went down */
231 if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
232 prev->speed == PHY_LINK_SPEED_ZERO)) {
233 if (now.speed == PHY_LINK_SPEED_ZERO) {
234 netif_stop_queue(netdev);
235 netif_carrier_off(netdev);
236 printk(KERN_INFO "%s: Link down\n", netdev->name);
237 } else {
238 netif_start_queue(netdev);
239 netif_carrier_on(netdev);
240 printk(KERN_INFO "%s: Link up\n", netdev->name);
241 }
242 }
243 *prev = now;
244 }
245
246 /* Update the EQ delay n BE based on the RX frags consumed / sec */
247 static void be_rx_eqd_update(struct be_adapter *adapter)
248 {
249 struct be_ctrl_info *ctrl = &adapter->ctrl;
250 struct be_eq_obj *rx_eq = &adapter->rx_eq;
251 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
252 ulong now = jiffies;
253 u32 eqd;
254
255 if (!rx_eq->enable_aic)
256 return;
257
258 /* Wrapped around */
259 if (time_before(now, stats->rx_fps_jiffies)) {
260 stats->rx_fps_jiffies = now;
261 return;
262 }
263
264 /* Update once a second */
265 if ((now - stats->rx_fps_jiffies) < HZ)
266 return;
267
268 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
269 ((now - stats->rx_fps_jiffies) / HZ);
270
271 stats->rx_fps_jiffies = now;
272 stats->be_prev_rx_frags = stats->be_rx_frags;
273 eqd = stats->be_rx_fps / 110000;
274 eqd = eqd << 3;
275 if (eqd > rx_eq->max_eqd)
276 eqd = rx_eq->max_eqd;
277 if (eqd < rx_eq->min_eqd)
278 eqd = rx_eq->min_eqd;
279 if (eqd < 10)
280 eqd = 0;
281 if (eqd != rx_eq->cur_eqd)
282 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
283
284 rx_eq->cur_eqd = eqd;
285 }
286
287 static struct net_device_stats *be_get_stats(struct net_device *dev)
288 {
289 struct be_adapter *adapter = netdev_priv(dev);
290
291 return &adapter->stats.net_stats;
292 }
293
294 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
295 {
296 u64 rate = bytes;
297
298 do_div(rate, ticks / HZ);
299 rate <<= 3; /* bytes/sec -> bits/sec */
300 do_div(rate, 1000000ul); /* MB/Sec */
301
302 return rate;
303 }
304
305 static void be_tx_rate_update(struct be_adapter *adapter)
306 {
307 struct be_drvr_stats *stats = drvr_stats(adapter);
308 ulong now = jiffies;
309
310 /* Wrapped around? */
311 if (time_before(now, stats->be_tx_jiffies)) {
312 stats->be_tx_jiffies = now;
313 return;
314 }
315
316 /* Update tx rate once in two seconds */
317 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
318 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
319 - stats->be_tx_bytes_prev,
320 now - stats->be_tx_jiffies);
321 stats->be_tx_jiffies = now;
322 stats->be_tx_bytes_prev = stats->be_tx_bytes;
323 }
324 }
325
326 static void be_tx_stats_update(struct be_adapter *adapter,
327 u32 wrb_cnt, u32 copied, bool stopped)
328 {
329 struct be_drvr_stats *stats = drvr_stats(adapter);
330 stats->be_tx_reqs++;
331 stats->be_tx_wrbs += wrb_cnt;
332 stats->be_tx_bytes += copied;
333 if (stopped)
334 stats->be_tx_stops++;
335 }
336
337 /* Determine number of WRB entries needed to xmit data in an skb */
338 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
339 {
340 int cnt = 0;
341 while (skb) {
342 if (skb->len > skb->data_len)
343 cnt++;
344 cnt += skb_shinfo(skb)->nr_frags;
345 skb = skb_shinfo(skb)->frag_list;
346 }
347 /* to account for hdr wrb */
348 cnt++;
349 if (cnt & 1) {
350 /* add a dummy to make it an even num */
351 cnt++;
352 *dummy = true;
353 } else
354 *dummy = false;
355 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
356 return cnt;
357 }
358
359 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
360 {
361 wrb->frag_pa_hi = upper_32_bits(addr);
362 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
363 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
364 }
365
366 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
367 bool vlan, u32 wrb_cnt, u32 len)
368 {
369 memset(hdr, 0, sizeof(*hdr));
370
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
372
373 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
376 hdr, skb_shinfo(skb)->gso_size);
377 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
378 if (is_tcp_pkt(skb))
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
380 else if (is_udp_pkt(skb))
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
382 }
383
384 if (vlan && vlan_tx_tag_present(skb)) {
385 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
386 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
387 hdr, vlan_tx_tag_get(skb));
388 }
389
390 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
391 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
392 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
393 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
394 }
395
396
397 static int make_tx_wrbs(struct be_adapter *adapter,
398 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
399 {
400 u64 busaddr;
401 u32 i, copied = 0;
402 struct pci_dev *pdev = adapter->pdev;
403 struct sk_buff *first_skb = skb;
404 struct be_queue_info *txq = &adapter->tx_obj.q;
405 struct be_eth_wrb *wrb;
406 struct be_eth_hdr_wrb *hdr;
407
408 atomic_add(wrb_cnt, &txq->used);
409 hdr = queue_head_node(txq);
410 queue_head_inc(txq);
411
412 while (skb) {
413 if (skb->len > skb->data_len) {
414 int len = skb->len - skb->data_len;
415 busaddr = pci_map_single(pdev, skb->data, len,
416 PCI_DMA_TODEVICE);
417 wrb = queue_head_node(txq);
418 wrb_fill(wrb, busaddr, len);
419 be_dws_cpu_to_le(wrb, sizeof(*wrb));
420 queue_head_inc(txq);
421 copied += len;
422 }
423
424 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
425 struct skb_frag_struct *frag =
426 &skb_shinfo(skb)->frags[i];
427 busaddr = pci_map_page(pdev, frag->page,
428 frag->page_offset,
429 frag->size, PCI_DMA_TODEVICE);
430 wrb = queue_head_node(txq);
431 wrb_fill(wrb, busaddr, frag->size);
432 be_dws_cpu_to_le(wrb, sizeof(*wrb));
433 queue_head_inc(txq);
434 copied += frag->size;
435 }
436 skb = skb_shinfo(skb)->frag_list;
437 }
438
439 if (dummy_wrb) {
440 wrb = queue_head_node(txq);
441 wrb_fill(wrb, 0, 0);
442 be_dws_cpu_to_le(wrb, sizeof(*wrb));
443 queue_head_inc(txq);
444 }
445
446 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
447 wrb_cnt, copied);
448 be_dws_cpu_to_le(hdr, sizeof(*hdr));
449
450 return copied;
451 }
452
453 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
454 {
455 struct be_adapter *adapter = netdev_priv(netdev);
456 struct be_tx_obj *tx_obj = &adapter->tx_obj;
457 struct be_queue_info *txq = &tx_obj->q;
458 u32 wrb_cnt = 0, copied = 0;
459 u32 start = txq->head;
460 bool dummy_wrb, stopped = false;
461
462 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
463
464 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
465
466 /* record the sent skb in the sent_skb table */
467 BUG_ON(tx_obj->sent_skb_list[start]);
468 tx_obj->sent_skb_list[start] = skb;
469
470 /* Ensure that txq has space for the next skb; Else stop the queue
471 * *BEFORE* ringing the tx doorbell, so that we serialze the
472 * tx compls of the current transmit which'll wake up the queue
473 */
474 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
475 netif_stop_queue(netdev);
476 stopped = true;
477 }
478
479 be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
480
481 netdev->trans_start = jiffies;
482
483 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
484 return NETDEV_TX_OK;
485 }
486
487 static int be_change_mtu(struct net_device *netdev, int new_mtu)
488 {
489 struct be_adapter *adapter = netdev_priv(netdev);
490 if (new_mtu < BE_MIN_MTU ||
491 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
492 dev_info(&adapter->pdev->dev,
493 "MTU must be between %d and %d bytes\n",
494 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
495 return -EINVAL;
496 }
497 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
498 netdev->mtu, new_mtu);
499 netdev->mtu = new_mtu;
500 return 0;
501 }
502
503 /*
504 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
505 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
506 * set the BE in promiscuous VLAN mode.
507 */
508 static void be_vid_config(struct net_device *netdev)
509 {
510 struct be_adapter *adapter = netdev_priv(netdev);
511 u16 vtag[BE_NUM_VLANS_SUPPORTED];
512 u16 ntags = 0, i;
513
514 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
515 /* Construct VLAN Table to give to HW */
516 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
517 if (adapter->vlan_tag[i]) {
518 vtag[ntags] = cpu_to_le16(i);
519 ntags++;
520 }
521 }
522 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
523 vtag, ntags, 1, 0);
524 } else {
525 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
526 NULL, 0, 1, 1);
527 }
528 }
529
530 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
531 {
532 struct be_adapter *adapter = netdev_priv(netdev);
533 struct be_eq_obj *rx_eq = &adapter->rx_eq;
534 struct be_eq_obj *tx_eq = &adapter->tx_eq;
535 struct be_ctrl_info *ctrl = &adapter->ctrl;
536
537 be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
538 be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
539 adapter->vlan_grp = grp;
540 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
541 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
542 }
543
544 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
545 {
546 struct be_adapter *adapter = netdev_priv(netdev);
547
548 adapter->num_vlans++;
549 adapter->vlan_tag[vid] = 1;
550
551 be_vid_config(netdev);
552 }
553
554 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
555 {
556 struct be_adapter *adapter = netdev_priv(netdev);
557
558 adapter->num_vlans--;
559 adapter->vlan_tag[vid] = 0;
560
561 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
562 be_vid_config(netdev);
563 }
564
565 static void be_set_multicast_filter(struct net_device *netdev)
566 {
567 struct be_adapter *adapter = netdev_priv(netdev);
568 struct dev_mc_list *mc_ptr;
569 u8 mac_addr[32][ETH_ALEN];
570 int i = 0;
571
572 if (netdev->flags & IFF_ALLMULTI) {
573 /* set BE in Multicast promiscuous */
574 be_cmd_mcast_mac_set(&adapter->ctrl,
575 adapter->if_handle, NULL, 0, true);
576 return;
577 }
578
579 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
580 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
581 if (++i >= 32) {
582 be_cmd_mcast_mac_set(&adapter->ctrl,
583 adapter->if_handle, &mac_addr[0][0], i, false);
584 i = 0;
585 }
586
587 }
588
589 if (i) {
590 /* reset the promiscuous mode also. */
591 be_cmd_mcast_mac_set(&adapter->ctrl,
592 adapter->if_handle, &mac_addr[0][0], i, false);
593 }
594 }
595
596 static void be_set_multicast_list(struct net_device *netdev)
597 {
598 struct be_adapter *adapter = netdev_priv(netdev);
599
600 if (netdev->flags & IFF_PROMISC) {
601 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
602 } else {
603 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
604 be_set_multicast_filter(netdev);
605 }
606 }
607
608 static void be_rx_rate_update(struct be_adapter *adapter)
609 {
610 struct be_drvr_stats *stats = drvr_stats(adapter);
611 ulong now = jiffies;
612
613 /* Wrapped around */
614 if (time_before(now, stats->be_rx_jiffies)) {
615 stats->be_rx_jiffies = now;
616 return;
617 }
618
619 /* Update the rate once in two seconds */
620 if ((now - stats->be_rx_jiffies) < 2 * HZ)
621 return;
622
623 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
624 - stats->be_rx_bytes_prev,
625 now - stats->be_rx_jiffies);
626 stats->be_rx_jiffies = now;
627 stats->be_rx_bytes_prev = stats->be_rx_bytes;
628 }
629
630 static void be_rx_stats_update(struct be_adapter *adapter,
631 u32 pktsize, u16 numfrags)
632 {
633 struct be_drvr_stats *stats = drvr_stats(adapter);
634
635 stats->be_rx_compl++;
636 stats->be_rx_frags += numfrags;
637 stats->be_rx_bytes += pktsize;
638 }
639
640 static struct be_rx_page_info *
641 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
642 {
643 struct be_rx_page_info *rx_page_info;
644 struct be_queue_info *rxq = &adapter->rx_obj.q;
645
646 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
647 BUG_ON(!rx_page_info->page);
648
649 if (rx_page_info->last_page_user)
650 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
651 adapter->big_page_size, PCI_DMA_FROMDEVICE);
652
653 atomic_dec(&rxq->used);
654 return rx_page_info;
655 }
656
657 /* Throwaway the data in the Rx completion */
658 static void be_rx_compl_discard(struct be_adapter *adapter,
659 struct be_eth_rx_compl *rxcp)
660 {
661 struct be_queue_info *rxq = &adapter->rx_obj.q;
662 struct be_rx_page_info *page_info;
663 u16 rxq_idx, i, num_rcvd;
664
665 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
666 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
667
668 for (i = 0; i < num_rcvd; i++) {
669 page_info = get_rx_page_info(adapter, rxq_idx);
670 put_page(page_info->page);
671 memset(page_info, 0, sizeof(*page_info));
672 index_inc(&rxq_idx, rxq->len);
673 }
674 }
675
676 /*
677 * skb_fill_rx_data forms a complete skb for an ether frame
678 * indicated by rxcp.
679 */
680 static void skb_fill_rx_data(struct be_adapter *adapter,
681 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
682 {
683 struct be_queue_info *rxq = &adapter->rx_obj.q;
684 struct be_rx_page_info *page_info;
685 u16 rxq_idx, i, num_rcvd, j;
686 u32 pktsize, hdr_len, curr_frag_len;
687 u8 *start;
688
689 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
690 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
691 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
692
693 page_info = get_rx_page_info(adapter, rxq_idx);
694
695 start = page_address(page_info->page) + page_info->page_offset;
696 prefetch(start);
697
698 /* Copy data in the first descriptor of this completion */
699 curr_frag_len = min(pktsize, rx_frag_size);
700
701 /* Copy the header portion into skb_data */
702 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
703 memcpy(skb->data, start, hdr_len);
704 skb->len = curr_frag_len;
705 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
706 /* Complete packet has now been moved to data */
707 put_page(page_info->page);
708 skb->data_len = 0;
709 skb->tail += curr_frag_len;
710 } else {
711 skb_shinfo(skb)->nr_frags = 1;
712 skb_shinfo(skb)->frags[0].page = page_info->page;
713 skb_shinfo(skb)->frags[0].page_offset =
714 page_info->page_offset + hdr_len;
715 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
716 skb->data_len = curr_frag_len - hdr_len;
717 skb->tail += hdr_len;
718 }
719 memset(page_info, 0, sizeof(*page_info));
720
721 if (pktsize <= rx_frag_size) {
722 BUG_ON(num_rcvd != 1);
723 return;
724 }
725
726 /* More frags present for this completion */
727 pktsize -= curr_frag_len; /* account for above copied frag */
728 for (i = 1, j = 0; i < num_rcvd; i++) {
729 index_inc(&rxq_idx, rxq->len);
730 page_info = get_rx_page_info(adapter, rxq_idx);
731
732 curr_frag_len = min(pktsize, rx_frag_size);
733
734 /* Coalesce all frags from the same physical page in one slot */
735 if (page_info->page_offset == 0) {
736 /* Fresh page */
737 j++;
738 skb_shinfo(skb)->frags[j].page = page_info->page;
739 skb_shinfo(skb)->frags[j].page_offset =
740 page_info->page_offset;
741 skb_shinfo(skb)->frags[j].size = 0;
742 skb_shinfo(skb)->nr_frags++;
743 } else {
744 put_page(page_info->page);
745 }
746
747 skb_shinfo(skb)->frags[j].size += curr_frag_len;
748 skb->len += curr_frag_len;
749 skb->data_len += curr_frag_len;
750 pktsize -= curr_frag_len;
751
752 memset(page_info, 0, sizeof(*page_info));
753 }
754 BUG_ON(j > MAX_SKB_FRAGS);
755
756 be_rx_stats_update(adapter, pktsize, num_rcvd);
757 return;
758 }
759
760 /* Process the RX completion indicated by rxcp when LRO is disabled */
761 static void be_rx_compl_process(struct be_adapter *adapter,
762 struct be_eth_rx_compl *rxcp)
763 {
764 struct sk_buff *skb;
765 u32 vtp, vid;
766 int l4_cksm;
767
768 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
769 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
770
771 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
772 if (!skb) {
773 if (net_ratelimit())
774 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
775 be_rx_compl_discard(adapter, rxcp);
776 return;
777 }
778
779 skb_reserve(skb, NET_IP_ALIGN);
780
781 skb_fill_rx_data(adapter, skb, rxcp);
782
783 if (l4_cksm && adapter->rx_csum)
784 skb->ip_summed = CHECKSUM_UNNECESSARY;
785 else
786 skb->ip_summed = CHECKSUM_NONE;
787
788 skb->truesize = skb->len + sizeof(struct sk_buff);
789 skb->protocol = eth_type_trans(skb, adapter->netdev);
790 skb->dev = adapter->netdev;
791
792 if (vtp) {
793 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
794 kfree_skb(skb);
795 return;
796 }
797 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
798 vid = be16_to_cpu(vid);
799 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
800 } else {
801 netif_receive_skb(skb);
802 }
803
804 adapter->netdev->last_rx = jiffies;
805
806 return;
807 }
808
809 /* Process the RX completion indicated by rxcp when LRO is enabled */
810 static void be_rx_compl_process_lro(struct be_adapter *adapter,
811 struct be_eth_rx_compl *rxcp)
812 {
813 struct be_rx_page_info *page_info;
814 struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
815 struct be_queue_info *rxq = &adapter->rx_obj.q;
816 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
817 u16 i, rxq_idx = 0, vid, j;
818
819 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
820 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
821 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
822 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
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 rx_frags[j].page = page_info->page;
835 rx_frags[j].page_offset = page_info->page_offset;
836 rx_frags[j].size = 0;
837 } else {
838 put_page(page_info->page);
839 }
840 rx_frags[j].size += curr_frag_len;
841
842 remaining -= curr_frag_len;
843 index_inc(&rxq_idx, rxq->len);
844 memset(page_info, 0, sizeof(*page_info));
845 }
846 BUG_ON(j > MAX_SKB_FRAGS);
847
848 if (likely(!vlanf)) {
849 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
850 pkt_size, NULL, 0);
851 } else {
852 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
853 vid = be16_to_cpu(vid);
854
855 if (!adapter->vlan_grp || adapter->num_vlans == 0)
856 return;
857
858 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
859 rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
860 vid, NULL, 0);
861 }
862
863 be_rx_stats_update(adapter, pkt_size, num_rcvd);
864 return;
865 }
866
867 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
868 {
869 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
870
871 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
872 return NULL;
873
874 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
875
876 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
877
878 queue_tail_inc(&adapter->rx_obj.cq);
879 return rxcp;
880 }
881
882 static inline struct page *be_alloc_pages(u32 size)
883 {
884 gfp_t alloc_flags = GFP_ATOMIC;
885 u32 order = get_order(size);
886 if (order > 0)
887 alloc_flags |= __GFP_COMP;
888 return alloc_pages(alloc_flags, order);
889 }
890
891 /*
892 * Allocate a page, split it to fragments of size rx_frag_size and post as
893 * receive buffers to BE
894 */
895 static void be_post_rx_frags(struct be_adapter *adapter)
896 {
897 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
898 struct be_rx_page_info *page_info = NULL;
899 struct be_queue_info *rxq = &adapter->rx_obj.q;
900 struct page *pagep = NULL;
901 struct be_eth_rx_d *rxd;
902 u64 page_dmaaddr = 0, frag_dmaaddr;
903 u32 posted, page_offset = 0;
904
905 page_info = &page_info_tbl[rxq->head];
906 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
907 if (!pagep) {
908 pagep = be_alloc_pages(adapter->big_page_size);
909 if (unlikely(!pagep)) {
910 drvr_stats(adapter)->be_ethrx_post_fail++;
911 break;
912 }
913 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
914 adapter->big_page_size,
915 PCI_DMA_FROMDEVICE);
916 page_info->page_offset = 0;
917 } else {
918 get_page(pagep);
919 page_info->page_offset = page_offset + rx_frag_size;
920 }
921 page_offset = page_info->page_offset;
922 page_info->page = pagep;
923 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
924 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
925
926 rxd = queue_head_node(rxq);
927 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
928 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
929 queue_head_inc(rxq);
930
931 /* Any space left in the current big page for another frag? */
932 if ((page_offset + rx_frag_size + rx_frag_size) >
933 adapter->big_page_size) {
934 pagep = NULL;
935 page_info->last_page_user = true;
936 }
937 page_info = &page_info_tbl[rxq->head];
938 }
939 if (pagep)
940 page_info->last_page_user = true;
941
942 if (posted) {
943 atomic_add(posted, &rxq->used);
944 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
945 } else if (atomic_read(&rxq->used) == 0) {
946 /* Let be_worker replenish when memory is available */
947 adapter->rx_post_starved = true;
948 }
949
950 return;
951 }
952
953 static struct be_eth_tx_compl *
954 be_tx_compl_get(struct be_adapter *adapter)
955 {
956 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
957 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
958
959 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
960 return NULL;
961
962 be_dws_le_to_cpu(txcp, sizeof(*txcp));
963
964 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
965
966 queue_tail_inc(tx_cq);
967 return txcp;
968 }
969
970 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
971 {
972 struct be_queue_info *txq = &adapter->tx_obj.q;
973 struct be_eth_wrb *wrb;
974 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
975 struct sk_buff *sent_skb;
976 u64 busaddr;
977 u16 cur_index, num_wrbs = 0;
978
979 cur_index = txq->tail;
980 sent_skb = sent_skbs[cur_index];
981 BUG_ON(!sent_skb);
982 sent_skbs[cur_index] = NULL;
983
984 do {
985 cur_index = txq->tail;
986 wrb = queue_tail_node(txq);
987 be_dws_le_to_cpu(wrb, sizeof(*wrb));
988 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
989 if (busaddr != 0) {
990 pci_unmap_single(adapter->pdev, busaddr,
991 wrb->frag_len, PCI_DMA_TODEVICE);
992 }
993 num_wrbs++;
994 queue_tail_inc(txq);
995 } while (cur_index != last_index);
996
997 atomic_sub(num_wrbs, &txq->used);
998
999 kfree_skb(sent_skb);
1000 }
1001
1002 static void be_rx_q_clean(struct be_adapter *adapter)
1003 {
1004 struct be_rx_page_info *page_info;
1005 struct be_queue_info *rxq = &adapter->rx_obj.q;
1006 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1007 struct be_eth_rx_compl *rxcp;
1008 u16 tail;
1009
1010 /* First cleanup pending rx completions */
1011 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1012 be_rx_compl_discard(adapter, rxcp);
1013 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1014 }
1015
1016 /* Then free posted rx buffer that were not used */
1017 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1018 for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1019 page_info = get_rx_page_info(adapter, tail);
1020 put_page(page_info->page);
1021 memset(page_info, 0, sizeof(*page_info));
1022 }
1023 BUG_ON(atomic_read(&rxq->used));
1024 }
1025
1026 static void be_tx_q_clean(struct be_adapter *adapter)
1027 {
1028 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1029 struct sk_buff *sent_skb;
1030 struct be_queue_info *txq = &adapter->tx_obj.q;
1031 u16 last_index;
1032 bool dummy_wrb;
1033
1034 while (atomic_read(&txq->used)) {
1035 sent_skb = sent_skbs[txq->tail];
1036 last_index = txq->tail;
1037 index_adv(&last_index,
1038 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1039 be_tx_compl_process(adapter, last_index);
1040 }
1041 }
1042
1043 static void be_tx_queues_destroy(struct be_adapter *adapter)
1044 {
1045 struct be_queue_info *q;
1046
1047 q = &adapter->tx_obj.q;
1048 if (q->created)
1049 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1050 be_queue_free(adapter, q);
1051
1052 q = &adapter->tx_obj.cq;
1053 if (q->created)
1054 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1055 be_queue_free(adapter, q);
1056
1057 /* No more tx completions can be rcvd now; clean up if there are
1058 * any pending completions or pending tx requests */
1059 be_tx_q_clean(adapter);
1060
1061 q = &adapter->tx_eq.q;
1062 if (q->created)
1063 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1064 be_queue_free(adapter, q);
1065 }
1066
1067 static int be_tx_queues_create(struct be_adapter *adapter)
1068 {
1069 struct be_queue_info *eq, *q, *cq;
1070
1071 adapter->tx_eq.max_eqd = 0;
1072 adapter->tx_eq.min_eqd = 0;
1073 adapter->tx_eq.cur_eqd = 96;
1074 adapter->tx_eq.enable_aic = false;
1075 /* Alloc Tx Event queue */
1076 eq = &adapter->tx_eq.q;
1077 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1078 return -1;
1079
1080 /* Ask BE to create Tx Event queue */
1081 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1082 goto tx_eq_free;
1083 /* Alloc TX eth compl queue */
1084 cq = &adapter->tx_obj.cq;
1085 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1086 sizeof(struct be_eth_tx_compl)))
1087 goto tx_eq_destroy;
1088
1089 /* Ask BE to create Tx eth compl queue */
1090 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1091 goto tx_cq_free;
1092
1093 /* Alloc TX eth queue */
1094 q = &adapter->tx_obj.q;
1095 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1096 goto tx_cq_destroy;
1097
1098 /* Ask BE to create Tx eth queue */
1099 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1100 goto tx_q_free;
1101 return 0;
1102
1103 tx_q_free:
1104 be_queue_free(adapter, q);
1105 tx_cq_destroy:
1106 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1107 tx_cq_free:
1108 be_queue_free(adapter, cq);
1109 tx_eq_destroy:
1110 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1111 tx_eq_free:
1112 be_queue_free(adapter, eq);
1113 return -1;
1114 }
1115
1116 static void be_rx_queues_destroy(struct be_adapter *adapter)
1117 {
1118 struct be_queue_info *q;
1119
1120 q = &adapter->rx_obj.q;
1121 if (q->created) {
1122 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1123 be_rx_q_clean(adapter);
1124 }
1125 be_queue_free(adapter, q);
1126
1127 q = &adapter->rx_obj.cq;
1128 if (q->created)
1129 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1130 be_queue_free(adapter, q);
1131
1132 q = &adapter->rx_eq.q;
1133 if (q->created)
1134 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1135 be_queue_free(adapter, q);
1136 }
1137
1138 static int be_rx_queues_create(struct be_adapter *adapter)
1139 {
1140 struct be_queue_info *eq, *q, *cq;
1141 int rc;
1142
1143 adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1144 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1145 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1146 adapter->rx_eq.min_eqd = 0;
1147 adapter->rx_eq.cur_eqd = 0;
1148 adapter->rx_eq.enable_aic = true;
1149
1150 /* Alloc Rx Event queue */
1151 eq = &adapter->rx_eq.q;
1152 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1153 sizeof(struct be_eq_entry));
1154 if (rc)
1155 return rc;
1156
1157 /* Ask BE to create Rx Event queue */
1158 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1159 if (rc)
1160 goto rx_eq_free;
1161
1162 /* Alloc RX eth compl queue */
1163 cq = &adapter->rx_obj.cq;
1164 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1165 sizeof(struct be_eth_rx_compl));
1166 if (rc)
1167 goto rx_eq_destroy;
1168
1169 /* Ask BE to create Rx eth compl queue */
1170 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1171 if (rc)
1172 goto rx_cq_free;
1173
1174 /* Alloc RX eth queue */
1175 q = &adapter->rx_obj.q;
1176 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1177 if (rc)
1178 goto rx_cq_destroy;
1179
1180 /* Ask BE to create Rx eth queue */
1181 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1182 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1183 if (rc)
1184 goto rx_q_free;
1185
1186 return 0;
1187 rx_q_free:
1188 be_queue_free(adapter, q);
1189 rx_cq_destroy:
1190 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1191 rx_cq_free:
1192 be_queue_free(adapter, cq);
1193 rx_eq_destroy:
1194 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1195 rx_eq_free:
1196 be_queue_free(adapter, eq);
1197 return rc;
1198 }
1199 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1200 {
1201 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1202 u32 evt = entry->evt;
1203
1204 if (!evt)
1205 return false;
1206
1207 evt = le32_to_cpu(evt);
1208 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1209 entry->evt = 0;
1210 queue_tail_inc(&eq_obj->q);
1211 return true;
1212 }
1213
1214 static int event_handle(struct be_ctrl_info *ctrl,
1215 struct be_eq_obj *eq_obj)
1216 {
1217 u16 rid = 0, num = 0;
1218
1219 while (event_get(eq_obj, &rid))
1220 num++;
1221
1222 /* We can see an interrupt and no event */
1223 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1224 if (num)
1225 napi_schedule(&eq_obj->napi);
1226
1227 return num;
1228 }
1229
1230 static irqreturn_t be_intx(int irq, void *dev)
1231 {
1232 struct be_adapter *adapter = dev;
1233 struct be_ctrl_info *ctrl = &adapter->ctrl;
1234 int rx, tx;
1235
1236 tx = event_handle(ctrl, &adapter->tx_eq);
1237 rx = event_handle(ctrl, &adapter->rx_eq);
1238
1239 if (rx || tx)
1240 return IRQ_HANDLED;
1241 else
1242 return IRQ_NONE;
1243 }
1244
1245 static irqreturn_t be_msix_rx(int irq, void *dev)
1246 {
1247 struct be_adapter *adapter = dev;
1248
1249 event_handle(&adapter->ctrl, &adapter->rx_eq);
1250
1251 return IRQ_HANDLED;
1252 }
1253
1254 static irqreturn_t be_msix_tx(int irq, void *dev)
1255 {
1256 struct be_adapter *adapter = dev;
1257
1258 event_handle(&adapter->ctrl, &adapter->tx_eq);
1259
1260 return IRQ_HANDLED;
1261 }
1262
1263 static inline bool do_lro(struct be_adapter *adapter,
1264 struct be_eth_rx_compl *rxcp)
1265 {
1266 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1267 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1268
1269 if (err)
1270 drvr_stats(adapter)->be_rxcp_err++;
1271
1272 return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1273 false : true;
1274 }
1275
1276 int be_poll_rx(struct napi_struct *napi, int budget)
1277 {
1278 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1279 struct be_adapter *adapter =
1280 container_of(rx_eq, struct be_adapter, rx_eq);
1281 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1282 struct be_eth_rx_compl *rxcp;
1283 u32 work_done;
1284
1285 for (work_done = 0; work_done < budget; work_done++) {
1286 rxcp = be_rx_compl_get(adapter);
1287 if (!rxcp)
1288 break;
1289
1290 if (do_lro(adapter, rxcp))
1291 be_rx_compl_process_lro(adapter, rxcp);
1292 else
1293 be_rx_compl_process(adapter, rxcp);
1294 }
1295
1296 lro_flush_all(&adapter->rx_obj.lro_mgr);
1297
1298 /* Refill the queue */
1299 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1300 be_post_rx_frags(adapter);
1301
1302 /* All consumed */
1303 if (work_done < budget) {
1304 napi_complete(napi);
1305 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1306 } else {
1307 /* More to be consumed; continue with interrupts disabled */
1308 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1309 }
1310 return work_done;
1311 }
1312
1313 /* For TX we don't honour budget; consume everything */
1314 int be_poll_tx(struct napi_struct *napi, int budget)
1315 {
1316 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1317 struct be_adapter *adapter =
1318 container_of(tx_eq, struct be_adapter, tx_eq);
1319 struct be_tx_obj *tx_obj = &adapter->tx_obj;
1320 struct be_queue_info *tx_cq = &tx_obj->cq;
1321 struct be_queue_info *txq = &tx_obj->q;
1322 struct be_eth_tx_compl *txcp;
1323 u32 num_cmpl = 0;
1324 u16 end_idx;
1325
1326 while ((txcp = be_tx_compl_get(adapter))) {
1327 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1328 wrb_index, txcp);
1329 be_tx_compl_process(adapter, end_idx);
1330 num_cmpl++;
1331 }
1332
1333 /* As Tx wrbs have been freed up, wake up netdev queue if
1334 * it was stopped due to lack of tx wrbs.
1335 */
1336 if (netif_queue_stopped(adapter->netdev) &&
1337 atomic_read(&txq->used) < txq->len / 2) {
1338 netif_wake_queue(adapter->netdev);
1339 }
1340
1341 napi_complete(napi);
1342
1343 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1344
1345 drvr_stats(adapter)->be_tx_events++;
1346 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1347
1348 return 1;
1349 }
1350
1351 static void be_worker(struct work_struct *work)
1352 {
1353 struct be_adapter *adapter =
1354 container_of(work, struct be_adapter, work.work);
1355 int status;
1356
1357 /* Check link */
1358 be_link_status_update(adapter);
1359
1360 /* Get Stats */
1361 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1362 if (!status)
1363 netdev_stats_update(adapter);
1364
1365 /* Set EQ delay */
1366 be_rx_eqd_update(adapter);
1367
1368 be_tx_rate_update(adapter);
1369 be_rx_rate_update(adapter);
1370
1371 if (adapter->rx_post_starved) {
1372 adapter->rx_post_starved = false;
1373 be_post_rx_frags(adapter);
1374 }
1375
1376 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1377 }
1378
1379 static void be_msix_enable(struct be_adapter *adapter)
1380 {
1381 int i, status;
1382
1383 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1384 adapter->msix_entries[i].entry = i;
1385
1386 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1387 BE_NUM_MSIX_VECTORS);
1388 if (status == 0)
1389 adapter->msix_enabled = true;
1390 return;
1391 }
1392
1393 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1394 {
1395 return adapter->msix_entries[eq_id -
1396 8 * adapter->ctrl.pci_func].vector;
1397 }
1398
1399 static int be_msix_register(struct be_adapter *adapter)
1400 {
1401 struct net_device *netdev = adapter->netdev;
1402 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1403 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1404 int status, vec;
1405
1406 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1407 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1408 status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1409 if (status)
1410 goto err;
1411
1412 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1413 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1414 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1415 if (status) { /* Free TX IRQ */
1416 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1417 free_irq(vec, adapter);
1418 goto err;
1419 }
1420 return 0;
1421 err:
1422 dev_warn(&adapter->pdev->dev,
1423 "MSIX Request IRQ failed - err %d\n", status);
1424 pci_disable_msix(adapter->pdev);
1425 adapter->msix_enabled = false;
1426 return status;
1427 }
1428
1429 static int be_irq_register(struct be_adapter *adapter)
1430 {
1431 struct net_device *netdev = adapter->netdev;
1432 int status;
1433
1434 if (adapter->msix_enabled) {
1435 status = be_msix_register(adapter);
1436 if (status == 0)
1437 goto done;
1438 }
1439
1440 /* INTx */
1441 netdev->irq = adapter->pdev->irq;
1442 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1443 adapter);
1444 if (status) {
1445 dev_err(&adapter->pdev->dev,
1446 "INTx request IRQ failed - err %d\n", status);
1447 return status;
1448 }
1449 done:
1450 adapter->isr_registered = true;
1451 return 0;
1452 }
1453
1454 static void be_irq_unregister(struct be_adapter *adapter)
1455 {
1456 struct net_device *netdev = adapter->netdev;
1457 int vec;
1458
1459 if (!adapter->isr_registered)
1460 return;
1461
1462 /* INTx */
1463 if (!adapter->msix_enabled) {
1464 free_irq(netdev->irq, adapter);
1465 goto done;
1466 }
1467
1468 /* MSIx */
1469 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1470 free_irq(vec, adapter);
1471 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1472 free_irq(vec, adapter);
1473 done:
1474 adapter->isr_registered = false;
1475 return;
1476 }
1477
1478 static int be_open(struct net_device *netdev)
1479 {
1480 struct be_adapter *adapter = netdev_priv(netdev);
1481 struct be_ctrl_info *ctrl = &adapter->ctrl;
1482 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1483 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1484 u32 if_flags;
1485 int status;
1486
1487 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1488 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1489 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1490 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1491 false/* pmac_invalid */, &adapter->if_handle,
1492 &adapter->pmac_id);
1493 if (status != 0)
1494 goto do_none;
1495
1496 be_vid_config(netdev);
1497
1498 status = be_cmd_set_flow_control(ctrl, true, true);
1499 if (status != 0)
1500 goto if_destroy;
1501
1502 status = be_tx_queues_create(adapter);
1503 if (status != 0)
1504 goto if_destroy;
1505
1506 status = be_rx_queues_create(adapter);
1507 if (status != 0)
1508 goto tx_qs_destroy;
1509
1510 /* First time posting */
1511 be_post_rx_frags(adapter);
1512
1513 napi_enable(&rx_eq->napi);
1514 napi_enable(&tx_eq->napi);
1515
1516 be_irq_register(adapter);
1517
1518 be_intr_set(ctrl, true);
1519
1520 /* The evt queues are created in the unarmed state; arm them */
1521 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1522 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1523
1524 /* The compl queues are created in the unarmed state; arm them */
1525 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1526 be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1527
1528 be_link_status_update(adapter);
1529
1530 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1531 return 0;
1532
1533 tx_qs_destroy:
1534 be_tx_queues_destroy(adapter);
1535 if_destroy:
1536 be_cmd_if_destroy(ctrl, adapter->if_handle);
1537 do_none:
1538 return status;
1539 }
1540
1541 static int be_close(struct net_device *netdev)
1542 {
1543 struct be_adapter *adapter = netdev_priv(netdev);
1544 struct be_ctrl_info *ctrl = &adapter->ctrl;
1545 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1546 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1547 int vec;
1548
1549 cancel_delayed_work(&adapter->work);
1550
1551 netif_stop_queue(netdev);
1552 netif_carrier_off(netdev);
1553 adapter->link.speed = PHY_LINK_SPEED_ZERO;
1554
1555 be_intr_set(ctrl, false);
1556
1557 if (adapter->msix_enabled) {
1558 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1559 synchronize_irq(vec);
1560 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1561 synchronize_irq(vec);
1562 } else {
1563 synchronize_irq(netdev->irq);
1564 }
1565 be_irq_unregister(adapter);
1566
1567 napi_disable(&rx_eq->napi);
1568 napi_disable(&tx_eq->napi);
1569
1570 be_rx_queues_destroy(adapter);
1571 be_tx_queues_destroy(adapter);
1572
1573 be_cmd_if_destroy(ctrl, adapter->if_handle);
1574 return 0;
1575 }
1576
1577 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1578 void **ip_hdr, void **tcpudp_hdr,
1579 u64 *hdr_flags, void *priv)
1580 {
1581 struct ethhdr *eh;
1582 struct vlan_ethhdr *veh;
1583 struct iphdr *iph;
1584 u8 *va = page_address(frag->page) + frag->page_offset;
1585 unsigned long ll_hlen;
1586
1587 prefetch(va);
1588 eh = (struct ethhdr *)va;
1589 *mac_hdr = eh;
1590 ll_hlen = ETH_HLEN;
1591 if (eh->h_proto != htons(ETH_P_IP)) {
1592 if (eh->h_proto == htons(ETH_P_8021Q)) {
1593 veh = (struct vlan_ethhdr *)va;
1594 if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1595 return -1;
1596
1597 ll_hlen += VLAN_HLEN;
1598 } else {
1599 return -1;
1600 }
1601 }
1602 *hdr_flags = LRO_IPV4;
1603 iph = (struct iphdr *)(va + ll_hlen);
1604 *ip_hdr = iph;
1605 if (iph->protocol != IPPROTO_TCP)
1606 return -1;
1607 *hdr_flags |= LRO_TCP;
1608 *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1609
1610 return 0;
1611 }
1612
1613 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1614 {
1615 struct net_lro_mgr *lro_mgr;
1616
1617 lro_mgr = &adapter->rx_obj.lro_mgr;
1618 lro_mgr->dev = netdev;
1619 lro_mgr->features = LRO_F_NAPI;
1620 lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1621 lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1622 lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1623 lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1624 lro_mgr->get_frag_header = be_get_frag_header;
1625 lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1626 }
1627
1628 static struct net_device_ops be_netdev_ops = {
1629 .ndo_open = be_open,
1630 .ndo_stop = be_close,
1631 .ndo_start_xmit = be_xmit,
1632 .ndo_get_stats = be_get_stats,
1633 .ndo_set_rx_mode = be_set_multicast_list,
1634 .ndo_set_mac_address = be_mac_addr_set,
1635 .ndo_change_mtu = be_change_mtu,
1636 .ndo_validate_addr = eth_validate_addr,
1637 .ndo_vlan_rx_register = be_vlan_register,
1638 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1639 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1640 };
1641
1642 static void be_netdev_init(struct net_device *netdev)
1643 {
1644 struct be_adapter *adapter = netdev_priv(netdev);
1645
1646 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1647 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1648 NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1649
1650 netdev->flags |= IFF_MULTICAST;
1651
1652 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1653
1654 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1655
1656 be_lro_init(adapter, netdev);
1657
1658 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1659 BE_NAPI_WEIGHT);
1660 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1661 BE_NAPI_WEIGHT);
1662
1663 netif_carrier_off(netdev);
1664 netif_stop_queue(netdev);
1665 }
1666
1667 static void be_unmap_pci_bars(struct be_adapter *adapter)
1668 {
1669 struct be_ctrl_info *ctrl = &adapter->ctrl;
1670 if (ctrl->csr)
1671 iounmap(ctrl->csr);
1672 if (ctrl->db)
1673 iounmap(ctrl->db);
1674 if (ctrl->pcicfg)
1675 iounmap(ctrl->pcicfg);
1676 }
1677
1678 static int be_map_pci_bars(struct be_adapter *adapter)
1679 {
1680 u8 __iomem *addr;
1681
1682 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1683 pci_resource_len(adapter->pdev, 2));
1684 if (addr == NULL)
1685 return -ENOMEM;
1686 adapter->ctrl.csr = addr;
1687
1688 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1689 128 * 1024);
1690 if (addr == NULL)
1691 goto pci_map_err;
1692 adapter->ctrl.db = addr;
1693
1694 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1695 pci_resource_len(adapter->pdev, 1));
1696 if (addr == NULL)
1697 goto pci_map_err;
1698 adapter->ctrl.pcicfg = addr;
1699
1700 return 0;
1701 pci_map_err:
1702 be_unmap_pci_bars(adapter);
1703 return -ENOMEM;
1704 }
1705
1706
1707 static void be_ctrl_cleanup(struct be_adapter *adapter)
1708 {
1709 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1710
1711 be_unmap_pci_bars(adapter);
1712
1713 if (mem->va)
1714 pci_free_consistent(adapter->pdev, mem->size,
1715 mem->va, mem->dma);
1716 }
1717
1718 /* Initialize the mbox required to send cmds to BE */
1719 static int be_ctrl_init(struct be_adapter *adapter)
1720 {
1721 struct be_ctrl_info *ctrl = &adapter->ctrl;
1722 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1723 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1724 int status;
1725 u32 val;
1726
1727 status = be_map_pci_bars(adapter);
1728 if (status)
1729 return status;
1730
1731 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1732 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1733 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1734 if (!mbox_mem_alloc->va) {
1735 be_unmap_pci_bars(adapter);
1736 return -1;
1737 }
1738 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1739 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1740 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1741 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1742 spin_lock_init(&ctrl->cmd_lock);
1743
1744 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1745 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1746 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1747 return 0;
1748 }
1749
1750 static void be_stats_cleanup(struct be_adapter *adapter)
1751 {
1752 struct be_stats_obj *stats = &adapter->stats;
1753 struct be_dma_mem *cmd = &stats->cmd;
1754
1755 if (cmd->va)
1756 pci_free_consistent(adapter->pdev, cmd->size,
1757 cmd->va, cmd->dma);
1758 }
1759
1760 static int be_stats_init(struct be_adapter *adapter)
1761 {
1762 struct be_stats_obj *stats = &adapter->stats;
1763 struct be_dma_mem *cmd = &stats->cmd;
1764
1765 cmd->size = sizeof(struct be_cmd_req_get_stats);
1766 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1767 if (cmd->va == NULL)
1768 return -1;
1769 return 0;
1770 }
1771
1772 static void __devexit be_remove(struct pci_dev *pdev)
1773 {
1774 struct be_adapter *adapter = pci_get_drvdata(pdev);
1775 if (!adapter)
1776 return;
1777
1778 unregister_netdev(adapter->netdev);
1779
1780 be_stats_cleanup(adapter);
1781
1782 be_ctrl_cleanup(adapter);
1783
1784 if (adapter->msix_enabled) {
1785 pci_disable_msix(adapter->pdev);
1786 adapter->msix_enabled = false;
1787 }
1788
1789 pci_set_drvdata(pdev, NULL);
1790 pci_release_regions(pdev);
1791 pci_disable_device(pdev);
1792
1793 free_netdev(adapter->netdev);
1794 }
1795
1796 static int be_hw_up(struct be_adapter *adapter)
1797 {
1798 struct be_ctrl_info *ctrl = &adapter->ctrl;
1799 int status;
1800
1801 status = be_cmd_POST(ctrl);
1802 if (status)
1803 return status;
1804
1805 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1806 if (status)
1807 return status;
1808
1809 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1810 return status;
1811 }
1812
1813 static int __devinit be_probe(struct pci_dev *pdev,
1814 const struct pci_device_id *pdev_id)
1815 {
1816 int status = 0;
1817 struct be_adapter *adapter;
1818 struct net_device *netdev;
1819 struct be_ctrl_info *ctrl;
1820 u8 mac[ETH_ALEN];
1821
1822 status = pci_enable_device(pdev);
1823 if (status)
1824 goto do_none;
1825
1826 status = pci_request_regions(pdev, DRV_NAME);
1827 if (status)
1828 goto disable_dev;
1829 pci_set_master(pdev);
1830
1831 netdev = alloc_etherdev(sizeof(struct be_adapter));
1832 if (netdev == NULL) {
1833 status = -ENOMEM;
1834 goto rel_reg;
1835 }
1836 adapter = netdev_priv(netdev);
1837 adapter->pdev = pdev;
1838 pci_set_drvdata(pdev, adapter);
1839 adapter->netdev = netdev;
1840
1841 be_msix_enable(adapter);
1842
1843 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1844 if (!status) {
1845 netdev->features |= NETIF_F_HIGHDMA;
1846 } else {
1847 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1848 if (status) {
1849 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1850 goto free_netdev;
1851 }
1852 }
1853
1854 ctrl = &adapter->ctrl;
1855 status = be_ctrl_init(adapter);
1856 if (status)
1857 goto free_netdev;
1858
1859 status = be_stats_init(adapter);
1860 if (status)
1861 goto ctrl_clean;
1862
1863 status = be_hw_up(adapter);
1864 if (status)
1865 goto stats_clean;
1866
1867 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1868 true /* permanent */, 0);
1869 if (status)
1870 goto stats_clean;
1871 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1872
1873 INIT_DELAYED_WORK(&adapter->work, be_worker);
1874 be_netdev_init(netdev);
1875 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1876
1877 status = register_netdev(netdev);
1878 if (status != 0)
1879 goto stats_clean;
1880
1881 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1882 return 0;
1883
1884 stats_clean:
1885 be_stats_cleanup(adapter);
1886 ctrl_clean:
1887 be_ctrl_cleanup(adapter);
1888 free_netdev:
1889 free_netdev(adapter->netdev);
1890 rel_reg:
1891 pci_release_regions(pdev);
1892 disable_dev:
1893 pci_disable_device(pdev);
1894 do_none:
1895 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1896 return status;
1897 }
1898
1899 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1900 {
1901 struct be_adapter *adapter = pci_get_drvdata(pdev);
1902 struct net_device *netdev = adapter->netdev;
1903
1904 netif_device_detach(netdev);
1905 if (netif_running(netdev)) {
1906 rtnl_lock();
1907 be_close(netdev);
1908 rtnl_unlock();
1909 }
1910
1911 pci_save_state(pdev);
1912 pci_disable_device(pdev);
1913 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1914 return 0;
1915 }
1916
1917 static int be_resume(struct pci_dev *pdev)
1918 {
1919 int status = 0;
1920 struct be_adapter *adapter = pci_get_drvdata(pdev);
1921 struct net_device *netdev = adapter->netdev;
1922
1923 netif_device_detach(netdev);
1924
1925 status = pci_enable_device(pdev);
1926 if (status)
1927 return status;
1928
1929 pci_set_power_state(pdev, 0);
1930 pci_restore_state(pdev);
1931
1932 if (netif_running(netdev)) {
1933 rtnl_lock();
1934 be_open(netdev);
1935 rtnl_unlock();
1936 }
1937 netif_device_attach(netdev);
1938 return 0;
1939 }
1940
1941 static struct pci_driver be_driver = {
1942 .name = DRV_NAME,
1943 .id_table = be_dev_ids,
1944 .probe = be_probe,
1945 .remove = be_remove,
1946 .suspend = be_suspend,
1947 .resume = be_resume
1948 };
1949
1950 static int __init be_init_module(void)
1951 {
1952 if (rx_frag_size != 8192 && rx_frag_size != 4096
1953 && rx_frag_size != 2048) {
1954 printk(KERN_WARNING DRV_NAME
1955 " : Module param rx_frag_size must be 2048/4096/8192."
1956 " Using 2048\n");
1957 rx_frag_size = 2048;
1958 }
1959 /* Ensure rx_frag_size is aligned to chache line */
1960 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1961 printk(KERN_WARNING DRV_NAME
1962 " : Bad module param rx_frag_size. Using 2048\n");
1963 rx_frag_size = 2048;
1964 }
1965
1966 return pci_register_driver(&be_driver);
1967 }
1968 module_init(be_init_module);
1969
1970 static void __exit be_exit_module(void)
1971 {
1972 pci_unregister_driver(&be_driver);
1973 }
1974 module_exit(be_exit_module);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree