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be2net: Add GRO support to the be2net driver. LRO is not supported anymore.
[deliverable/linux.git] / drivers / net / benet / be_main.c
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 void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
64 {
65 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
66 u32 reg = ioread32(addr);
67 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
68 if (!enabled && enable) {
69 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
70 } else if (enabled && !enable) {
71 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
72 } else {
73 printk(KERN_WARNING DRV_NAME
74 ": bad value in membar_int_ctrl reg=0x%x\n", reg);
75 return;
76 }
77 iowrite32(reg, addr);
78 }
79
80 static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
81 {
82 u32 val = 0;
83 val |= qid & DB_RQ_RING_ID_MASK;
84 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
85 iowrite32(val, ctrl->db + DB_RQ_OFFSET);
86 }
87
88 static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
89 {
90 u32 val = 0;
91 val |= qid & DB_TXULP_RING_ID_MASK;
92 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
93 iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
94 }
95
96 static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
97 bool arm, bool clear_int, u16 num_popped)
98 {
99 u32 val = 0;
100 val |= qid & DB_EQ_RING_ID_MASK;
101 if (arm)
102 val |= 1 << DB_EQ_REARM_SHIFT;
103 if (clear_int)
104 val |= 1 << DB_EQ_CLR_SHIFT;
105 val |= 1 << DB_EQ_EVNT_SHIFT;
106 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
107 iowrite32(val, ctrl->db + DB_EQ_OFFSET);
108 }
109
110 void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
111 bool arm, u16 num_popped)
112 {
113 u32 val = 0;
114 val |= qid & DB_CQ_RING_ID_MASK;
115 if (arm)
116 val |= 1 << DB_CQ_REARM_SHIFT;
117 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
118 iowrite32(val, ctrl->db + DB_CQ_OFFSET);
119 }
120
121
122 static int be_mac_addr_set(struct net_device *netdev, void *p)
123 {
124 struct be_adapter *adapter = netdev_priv(netdev);
125 struct sockaddr *addr = p;
126 int status = 0;
127
128 if (netif_running(netdev)) {
129 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
130 adapter->pmac_id);
131 if (status)
132 return status;
133
134 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
135 adapter->if_handle, &adapter->pmac_id);
136 }
137
138 if (!status)
139 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
140
141 return status;
142 }
143
144 static void netdev_stats_update(struct be_adapter *adapter)
145 {
146 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
147 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
148 struct be_port_rxf_stats *port_stats =
149 &rxf_stats->port[adapter->port_num];
150 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
151 struct be_erx_stats *erx_stats = &hw_stats->erx;
152
153 dev_stats->rx_packets = port_stats->rx_total_frames;
154 dev_stats->tx_packets = port_stats->tx_unicastframes +
155 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
156 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
157 (u64) port_stats->rx_bytes_lsd;
158 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
159 (u64) port_stats->tx_bytes_lsd;
160
161 /* bad pkts received */
162 dev_stats->rx_errors = port_stats->rx_crc_errors +
163 port_stats->rx_alignment_symbol_errors +
164 port_stats->rx_in_range_errors +
165 port_stats->rx_out_range_errors +
166 port_stats->rx_frame_too_long +
167 port_stats->rx_dropped_too_small +
168 port_stats->rx_dropped_too_short +
169 port_stats->rx_dropped_header_too_small +
170 port_stats->rx_dropped_tcp_length +
171 port_stats->rx_dropped_runt +
172 port_stats->rx_tcp_checksum_errs +
173 port_stats->rx_ip_checksum_errs +
174 port_stats->rx_udp_checksum_errs;
175
176 /* no space in linux buffers: best possible approximation */
177 dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
178
179 /* detailed rx errors */
180 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
181 port_stats->rx_out_range_errors +
182 port_stats->rx_frame_too_long;
183
184 /* receive ring buffer overflow */
185 dev_stats->rx_over_errors = 0;
186
187 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
188
189 /* frame alignment errors */
190 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
191
192 /* receiver fifo overrun */
193 /* drops_no_pbuf is no per i/f, it's per BE card */
194 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
195 port_stats->rx_input_fifo_overflow +
196 rxf_stats->rx_drops_no_pbuf;
197 /* receiver missed packetd */
198 dev_stats->rx_missed_errors = 0;
199
200 /* packet transmit problems */
201 dev_stats->tx_errors = 0;
202
203 /* no space available in linux */
204 dev_stats->tx_dropped = 0;
205
206 dev_stats->multicast = port_stats->tx_multicastframes;
207 dev_stats->collisions = 0;
208
209 /* detailed tx_errors */
210 dev_stats->tx_aborted_errors = 0;
211 dev_stats->tx_carrier_errors = 0;
212 dev_stats->tx_fifo_errors = 0;
213 dev_stats->tx_heartbeat_errors = 0;
214 dev_stats->tx_window_errors = 0;
215 }
216
217 void be_link_status_update(void *ctxt, bool link_up)
218 {
219 struct be_adapter *adapter = ctxt;
220 struct net_device *netdev = adapter->netdev;
221
222 /* If link came up or went down */
223 if (adapter->link_up != link_up) {
224 if (link_up) {
225 netif_start_queue(netdev);
226 netif_carrier_on(netdev);
227 printk(KERN_INFO "%s: Link up\n", netdev->name);
228 } else {
229 netif_stop_queue(netdev);
230 netif_carrier_off(netdev);
231 printk(KERN_INFO "%s: Link down\n", netdev->name);
232 }
233 adapter->link_up = link_up;
234 }
235 }
236
237 /* Update the EQ delay n BE based on the RX frags consumed / sec */
238 static void be_rx_eqd_update(struct be_adapter *adapter)
239 {
240 struct be_ctrl_info *ctrl = &adapter->ctrl;
241 struct be_eq_obj *rx_eq = &adapter->rx_eq;
242 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
243 ulong now = jiffies;
244 u32 eqd;
245
246 if (!rx_eq->enable_aic)
247 return;
248
249 /* Wrapped around */
250 if (time_before(now, stats->rx_fps_jiffies)) {
251 stats->rx_fps_jiffies = now;
252 return;
253 }
254
255 /* Update once a second */
256 if ((now - stats->rx_fps_jiffies) < HZ)
257 return;
258
259 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
260 ((now - stats->rx_fps_jiffies) / HZ);
261
262 stats->rx_fps_jiffies = now;
263 stats->be_prev_rx_frags = stats->be_rx_frags;
264 eqd = stats->be_rx_fps / 110000;
265 eqd = eqd << 3;
266 if (eqd > rx_eq->max_eqd)
267 eqd = rx_eq->max_eqd;
268 if (eqd < rx_eq->min_eqd)
269 eqd = rx_eq->min_eqd;
270 if (eqd < 10)
271 eqd = 0;
272 if (eqd != rx_eq->cur_eqd)
273 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
274
275 rx_eq->cur_eqd = eqd;
276 }
277
278 static struct net_device_stats *be_get_stats(struct net_device *dev)
279 {
280 struct be_adapter *adapter = netdev_priv(dev);
281
282 return &adapter->stats.net_stats;
283 }
284
285 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
286 {
287 u64 rate = bytes;
288
289 do_div(rate, ticks / HZ);
290 rate <<= 3; /* bytes/sec -> bits/sec */
291 do_div(rate, 1000000ul); /* MB/Sec */
292
293 return rate;
294 }
295
296 static void be_tx_rate_update(struct be_adapter *adapter)
297 {
298 struct be_drvr_stats *stats = drvr_stats(adapter);
299 ulong now = jiffies;
300
301 /* Wrapped around? */
302 if (time_before(now, stats->be_tx_jiffies)) {
303 stats->be_tx_jiffies = now;
304 return;
305 }
306
307 /* Update tx rate once in two seconds */
308 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
309 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
310 - stats->be_tx_bytes_prev,
311 now - stats->be_tx_jiffies);
312 stats->be_tx_jiffies = now;
313 stats->be_tx_bytes_prev = stats->be_tx_bytes;
314 }
315 }
316
317 static void be_tx_stats_update(struct be_adapter *adapter,
318 u32 wrb_cnt, u32 copied, bool stopped)
319 {
320 struct be_drvr_stats *stats = drvr_stats(adapter);
321 stats->be_tx_reqs++;
322 stats->be_tx_wrbs += wrb_cnt;
323 stats->be_tx_bytes += copied;
324 if (stopped)
325 stats->be_tx_stops++;
326 }
327
328 /* Determine number of WRB entries needed to xmit data in an skb */
329 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
330 {
331 int cnt = (skb->len > skb->data_len);
332
333 cnt += skb_shinfo(skb)->nr_frags;
334
335 /* to account for hdr wrb */
336 cnt++;
337 if (cnt & 1) {
338 /* add a dummy to make it an even num */
339 cnt++;
340 *dummy = true;
341 } else
342 *dummy = false;
343 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
344 return cnt;
345 }
346
347 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
348 {
349 wrb->frag_pa_hi = upper_32_bits(addr);
350 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
351 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
352 }
353
354 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
355 bool vlan, u32 wrb_cnt, u32 len)
356 {
357 memset(hdr, 0, sizeof(*hdr));
358
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
360
361 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
362 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
363 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
364 hdr, skb_shinfo(skb)->gso_size);
365 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
366 if (is_tcp_pkt(skb))
367 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
368 else if (is_udp_pkt(skb))
369 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
370 }
371
372 if (vlan && vlan_tx_tag_present(skb)) {
373 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
375 hdr, vlan_tx_tag_get(skb));
376 }
377
378 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
380 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
382 }
383
384
385 static int make_tx_wrbs(struct be_adapter *adapter,
386 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
387 {
388 u64 busaddr;
389 u32 i, copied = 0;
390 struct pci_dev *pdev = adapter->pdev;
391 struct sk_buff *first_skb = skb;
392 struct be_queue_info *txq = &adapter->tx_obj.q;
393 struct be_eth_wrb *wrb;
394 struct be_eth_hdr_wrb *hdr;
395
396 atomic_add(wrb_cnt, &txq->used);
397 hdr = queue_head_node(txq);
398 queue_head_inc(txq);
399
400 if (skb->len > skb->data_len) {
401 int len = skb->len - skb->data_len;
402 busaddr = pci_map_single(pdev, skb->data, len,
403 PCI_DMA_TODEVICE);
404 wrb = queue_head_node(txq);
405 wrb_fill(wrb, busaddr, len);
406 be_dws_cpu_to_le(wrb, sizeof(*wrb));
407 queue_head_inc(txq);
408 copied += len;
409 }
410
411 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
412 struct skb_frag_struct *frag =
413 &skb_shinfo(skb)->frags[i];
414 busaddr = pci_map_page(pdev, frag->page,
415 frag->page_offset,
416 frag->size, PCI_DMA_TODEVICE);
417 wrb = queue_head_node(txq);
418 wrb_fill(wrb, busaddr, frag->size);
419 be_dws_cpu_to_le(wrb, sizeof(*wrb));
420 queue_head_inc(txq);
421 copied += frag->size;
422 }
423
424 if (dummy_wrb) {
425 wrb = queue_head_node(txq);
426 wrb_fill(wrb, 0, 0);
427 be_dws_cpu_to_le(wrb, sizeof(*wrb));
428 queue_head_inc(txq);
429 }
430
431 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
432 wrb_cnt, copied);
433 be_dws_cpu_to_le(hdr, sizeof(*hdr));
434
435 return copied;
436 }
437
438 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
439 {
440 struct be_adapter *adapter = netdev_priv(netdev);
441 struct be_tx_obj *tx_obj = &adapter->tx_obj;
442 struct be_queue_info *txq = &tx_obj->q;
443 u32 wrb_cnt = 0, copied = 0;
444 u32 start = txq->head;
445 bool dummy_wrb, stopped = false;
446
447 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
448
449 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
450
451 /* record the sent skb in the sent_skb table */
452 BUG_ON(tx_obj->sent_skb_list[start]);
453 tx_obj->sent_skb_list[start] = skb;
454
455 /* Ensure that txq has space for the next skb; Else stop the queue
456 * *BEFORE* ringing the tx doorbell, so that we serialze the
457 * tx compls of the current transmit which'll wake up the queue
458 */
459 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
460 netif_stop_queue(netdev);
461 stopped = true;
462 }
463
464 be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
465
466 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
467 return NETDEV_TX_OK;
468 }
469
470 static int be_change_mtu(struct net_device *netdev, int new_mtu)
471 {
472 struct be_adapter *adapter = netdev_priv(netdev);
473 if (new_mtu < BE_MIN_MTU ||
474 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
475 dev_info(&adapter->pdev->dev,
476 "MTU must be between %d and %d bytes\n",
477 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
478 return -EINVAL;
479 }
480 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
481 netdev->mtu, new_mtu);
482 netdev->mtu = new_mtu;
483 return 0;
484 }
485
486 /*
487 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
488 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
489 * set the BE in promiscuous VLAN mode.
490 */
491 static void be_vid_config(struct net_device *netdev)
492 {
493 struct be_adapter *adapter = netdev_priv(netdev);
494 u16 vtag[BE_NUM_VLANS_SUPPORTED];
495 u16 ntags = 0, i;
496
497 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
498 /* Construct VLAN Table to give to HW */
499 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
500 if (adapter->vlan_tag[i]) {
501 vtag[ntags] = cpu_to_le16(i);
502 ntags++;
503 }
504 }
505 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
506 vtag, ntags, 1, 0);
507 } else {
508 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
509 NULL, 0, 1, 1);
510 }
511 }
512
513 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
514 {
515 struct be_adapter *adapter = netdev_priv(netdev);
516 struct be_eq_obj *rx_eq = &adapter->rx_eq;
517 struct be_eq_obj *tx_eq = &adapter->tx_eq;
518 struct be_ctrl_info *ctrl = &adapter->ctrl;
519
520 be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
521 be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
522 adapter->vlan_grp = grp;
523 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
524 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
525 }
526
527 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
528 {
529 struct be_adapter *adapter = netdev_priv(netdev);
530
531 adapter->num_vlans++;
532 adapter->vlan_tag[vid] = 1;
533
534 be_vid_config(netdev);
535 }
536
537 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
538 {
539 struct be_adapter *adapter = netdev_priv(netdev);
540
541 adapter->num_vlans--;
542 adapter->vlan_tag[vid] = 0;
543
544 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
545 be_vid_config(netdev);
546 }
547
548 static void be_set_multicast_list(struct net_device *netdev)
549 {
550 struct be_adapter *adapter = netdev_priv(netdev);
551 struct be_ctrl_info *ctrl = &adapter->ctrl;
552
553 if (netdev->flags & IFF_PROMISC) {
554 be_cmd_promiscuous_config(ctrl, 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(ctrl, adapter->port_num, 0);
563 }
564
565 if (netdev->flags & IFF_ALLMULTI) {
566 be_cmd_multicast_set(ctrl, adapter->if_handle, NULL, 0);
567 goto done;
568 }
569
570 be_cmd_multicast_set(ctrl, 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;
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 pktsize -= curr_frag_len; /* account for above copied frag */
712 for (i = 1, j = 0; i < num_rcvd; i++) {
713 index_inc(&rxq_idx, rxq->len);
714 page_info = get_rx_page_info(adapter, rxq_idx);
715
716 curr_frag_len = min(pktsize, rx_frag_size);
717
718 /* Coalesce all frags from the same physical page in one slot */
719 if (page_info->page_offset == 0) {
720 /* Fresh page */
721 j++;
722 skb_shinfo(skb)->frags[j].page = page_info->page;
723 skb_shinfo(skb)->frags[j].page_offset =
724 page_info->page_offset;
725 skb_shinfo(skb)->frags[j].size = 0;
726 skb_shinfo(skb)->nr_frags++;
727 } else {
728 put_page(page_info->page);
729 }
730
731 skb_shinfo(skb)->frags[j].size += curr_frag_len;
732 skb->len += curr_frag_len;
733 skb->data_len += curr_frag_len;
734 pktsize -= 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 vtp, vid;
751
752 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
753
754 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
755 if (!skb) {
756 if (net_ratelimit())
757 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
758 be_rx_compl_discard(adapter, rxcp);
759 return;
760 }
761
762 skb_reserve(skb, NET_IP_ALIGN);
763
764 skb_fill_rx_data(adapter, skb, rxcp);
765
766 if (do_pkt_csum(rxcp, adapter->rx_csum))
767 skb->ip_summed = CHECKSUM_NONE;
768 else
769 skb->ip_summed = CHECKSUM_UNNECESSARY;
770
771 skb->truesize = skb->len + sizeof(struct sk_buff);
772 skb->protocol = eth_type_trans(skb, adapter->netdev);
773 skb->dev = adapter->netdev;
774
775 if (vtp) {
776 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
777 kfree_skb(skb);
778 return;
779 }
780 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
781 vid = be16_to_cpu(vid);
782 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
783 } else {
784 netif_receive_skb(skb);
785 }
786
787 adapter->netdev->last_rx = jiffies;
788
789 return;
790 }
791
792 /* Process the RX completion indicated by rxcp when GRO is enabled */
793 static void be_rx_compl_process_gro(struct be_adapter *adapter,
794 struct be_eth_rx_compl *rxcp)
795 {
796 struct be_rx_page_info *page_info;
797 struct sk_buff *skb = NULL;
798 struct be_queue_info *rxq = &adapter->rx_obj.q;
799 struct be_eq_obj *eq_obj = &adapter->rx_eq;
800 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
801 u16 i, rxq_idx = 0, vid, j;
802
803 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
804 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
805 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
806 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
807
808 skb = napi_get_frags(&eq_obj->napi);
809 if (!skb) {
810 be_rx_compl_discard(adapter, rxcp);
811 return;
812 }
813
814 remaining = pkt_size;
815 for (i = 0, j = -1; i < num_rcvd; i++) {
816 page_info = get_rx_page_info(adapter, rxq_idx);
817
818 curr_frag_len = min(remaining, rx_frag_size);
819
820 /* Coalesce all frags from the same physical page in one slot */
821 if (i == 0 || page_info->page_offset == 0) {
822 /* First frag or Fresh page */
823 j++;
824 skb_shinfo(skb)->frags[j].page = page_info->page;
825 skb_shinfo(skb)->frags[j].page_offset =
826 page_info->page_offset;
827 skb_shinfo(skb)->frags[j].size = 0;
828 } else {
829 put_page(page_info->page);
830 }
831 skb_shinfo(skb)->frags[j].size += curr_frag_len;
832
833 remaining -= curr_frag_len;
834 index_inc(&rxq_idx, rxq->len);
835 memset(page_info, 0, sizeof(*page_info));
836 }
837 BUG_ON(j > MAX_SKB_FRAGS);
838
839 skb_shinfo(skb)->nr_frags = j + 1;
840 skb->len = pkt_size;
841 skb->data_len = pkt_size;
842 skb->truesize += pkt_size;
843 skb->ip_summed = CHECKSUM_UNNECESSARY;
844
845 if (likely(!vlanf)) {
846 napi_gro_frags(&eq_obj->napi);
847 } else {
848 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
849 vid = be16_to_cpu(vid);
850
851 if (!adapter->vlan_grp || adapter->num_vlans == 0)
852 return;
853
854 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
855 }
856
857 be_rx_stats_update(adapter, pkt_size, num_rcvd);
858 return;
859 }
860
861 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
862 {
863 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
864
865 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
866 return NULL;
867
868 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
869
870 queue_tail_inc(&adapter->rx_obj.cq);
871 return rxcp;
872 }
873
874 /* To reset the valid bit, we need to reset the whole word as
875 * when walking the queue the valid entries are little-endian
876 * and invalid entries are host endian
877 */
878 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
879 {
880 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
881 }
882
883 static inline struct page *be_alloc_pages(u32 size)
884 {
885 gfp_t alloc_flags = GFP_ATOMIC;
886 u32 order = get_order(size);
887 if (order > 0)
888 alloc_flags |= __GFP_COMP;
889 return alloc_pages(alloc_flags, order);
890 }
891
892 /*
893 * Allocate a page, split it to fragments of size rx_frag_size and post as
894 * receive buffers to BE
895 */
896 static void be_post_rx_frags(struct be_adapter *adapter)
897 {
898 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
899 struct be_rx_page_info *page_info = NULL;
900 struct be_queue_info *rxq = &adapter->rx_obj.q;
901 struct page *pagep = NULL;
902 struct be_eth_rx_d *rxd;
903 u64 page_dmaaddr = 0, frag_dmaaddr;
904 u32 posted, page_offset = 0;
905
906 page_info = &page_info_tbl[rxq->head];
907 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
908 if (!pagep) {
909 pagep = be_alloc_pages(adapter->big_page_size);
910 if (unlikely(!pagep)) {
911 drvr_stats(adapter)->be_ethrx_post_fail++;
912 break;
913 }
914 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
915 adapter->big_page_size,
916 PCI_DMA_FROMDEVICE);
917 page_info->page_offset = 0;
918 } else {
919 get_page(pagep);
920 page_info->page_offset = page_offset + rx_frag_size;
921 }
922 page_offset = page_info->page_offset;
923 page_info->page = pagep;
924 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
925 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
926
927 rxd = queue_head_node(rxq);
928 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
929 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
930 queue_head_inc(rxq);
931
932 /* Any space left in the current big page for another frag? */
933 if ((page_offset + rx_frag_size + rx_frag_size) >
934 adapter->big_page_size) {
935 pagep = NULL;
936 page_info->last_page_user = true;
937 }
938 page_info = &page_info_tbl[rxq->head];
939 }
940 if (pagep)
941 page_info->last_page_user = true;
942
943 if (posted) {
944 atomic_add(posted, &rxq->used);
945 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
946 } else if (atomic_read(&rxq->used) == 0) {
947 /* Let be_worker replenish when memory is available */
948 adapter->rx_post_starved = true;
949 }
950
951 return;
952 }
953
954 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
955 {
956 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
957
958 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
959 return NULL;
960
961 be_dws_le_to_cpu(txcp, sizeof(*txcp));
962
963 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
964
965 queue_tail_inc(tx_cq);
966 return txcp;
967 }
968
969 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
970 {
971 struct be_queue_info *txq = &adapter->tx_obj.q;
972 struct be_eth_wrb *wrb;
973 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
974 struct sk_buff *sent_skb;
975 u64 busaddr;
976 u16 cur_index, num_wrbs = 0;
977
978 cur_index = txq->tail;
979 sent_skb = sent_skbs[cur_index];
980 BUG_ON(!sent_skb);
981 sent_skbs[cur_index] = NULL;
982
983 do {
984 cur_index = txq->tail;
985 wrb = queue_tail_node(txq);
986 be_dws_le_to_cpu(wrb, sizeof(*wrb));
987 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
988 if (busaddr != 0) {
989 pci_unmap_single(adapter->pdev, busaddr,
990 wrb->frag_len, PCI_DMA_TODEVICE);
991 }
992 num_wrbs++;
993 queue_tail_inc(txq);
994 } while (cur_index != last_index);
995
996 atomic_sub(num_wrbs, &txq->used);
997
998 kfree_skb(sent_skb);
999 }
1000
1001 static void be_rx_q_clean(struct be_adapter *adapter)
1002 {
1003 struct be_rx_page_info *page_info;
1004 struct be_queue_info *rxq = &adapter->rx_obj.q;
1005 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1006 struct be_eth_rx_compl *rxcp;
1007 u16 tail;
1008
1009 /* First cleanup pending rx completions */
1010 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1011 be_rx_compl_discard(adapter, rxcp);
1012 be_rx_compl_reset(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_mcc_queues_destroy(struct be_adapter *adapter)
1044 {
1045 struct be_queue_info *q;
1046 struct be_ctrl_info *ctrl = &adapter->ctrl;
1047
1048 q = &ctrl->mcc_obj.q;
1049 if (q->created)
1050 be_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
1051 be_queue_free(adapter, q);
1052
1053 q = &ctrl->mcc_obj.cq;
1054 if (q->created)
1055 be_cmd_q_destroy(ctrl, q, QTYPE_CQ);
1056 be_queue_free(adapter, q);
1057 }
1058
1059 /* Must be called only after TX qs are created as MCC shares TX EQ */
1060 static int be_mcc_queues_create(struct be_adapter *adapter)
1061 {
1062 struct be_queue_info *q, *cq;
1063 struct be_ctrl_info *ctrl = &adapter->ctrl;
1064
1065 /* Alloc MCC compl queue */
1066 cq = &ctrl->mcc_obj.cq;
1067 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1068 sizeof(struct be_mcc_cq_entry)))
1069 goto err;
1070
1071 /* Ask BE to create MCC compl queue; share TX's eq */
1072 if (be_cmd_cq_create(ctrl, cq, &adapter->tx_eq.q, false, true, 0))
1073 goto mcc_cq_free;
1074
1075 /* Alloc MCC queue */
1076 q = &ctrl->mcc_obj.q;
1077 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1078 goto mcc_cq_destroy;
1079
1080 /* Ask BE to create MCC queue */
1081 if (be_cmd_mccq_create(ctrl, q, cq))
1082 goto mcc_q_free;
1083
1084 return 0;
1085
1086 mcc_q_free:
1087 be_queue_free(adapter, q);
1088 mcc_cq_destroy:
1089 be_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
1090 mcc_cq_free:
1091 be_queue_free(adapter, cq);
1092 err:
1093 return -1;
1094 }
1095
1096 static void be_tx_queues_destroy(struct be_adapter *adapter)
1097 {
1098 struct be_queue_info *q;
1099
1100 q = &adapter->tx_obj.q;
1101 if (q->created) {
1102 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1103
1104 /* No more tx completions can be rcvd now; clean up if there
1105 * are any pending completions or pending tx requests */
1106 be_tx_q_clean(adapter);
1107 }
1108 be_queue_free(adapter, q);
1109
1110 q = &adapter->tx_obj.cq;
1111 if (q->created)
1112 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1113 be_queue_free(adapter, q);
1114
1115 q = &adapter->tx_eq.q;
1116 if (q->created)
1117 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1118 be_queue_free(adapter, q);
1119 }
1120
1121 static int be_tx_queues_create(struct be_adapter *adapter)
1122 {
1123 struct be_queue_info *eq, *q, *cq;
1124
1125 adapter->tx_eq.max_eqd = 0;
1126 adapter->tx_eq.min_eqd = 0;
1127 adapter->tx_eq.cur_eqd = 96;
1128 adapter->tx_eq.enable_aic = false;
1129 /* Alloc Tx Event queue */
1130 eq = &adapter->tx_eq.q;
1131 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1132 return -1;
1133
1134 /* Ask BE to create Tx Event queue */
1135 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1136 goto tx_eq_free;
1137 /* Alloc TX eth compl queue */
1138 cq = &adapter->tx_obj.cq;
1139 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1140 sizeof(struct be_eth_tx_compl)))
1141 goto tx_eq_destroy;
1142
1143 /* Ask BE to create Tx eth compl queue */
1144 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1145 goto tx_cq_free;
1146
1147 /* Alloc TX eth queue */
1148 q = &adapter->tx_obj.q;
1149 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1150 goto tx_cq_destroy;
1151
1152 /* Ask BE to create Tx eth queue */
1153 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1154 goto tx_q_free;
1155 return 0;
1156
1157 tx_q_free:
1158 be_queue_free(adapter, q);
1159 tx_cq_destroy:
1160 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1161 tx_cq_free:
1162 be_queue_free(adapter, cq);
1163 tx_eq_destroy:
1164 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1165 tx_eq_free:
1166 be_queue_free(adapter, eq);
1167 return -1;
1168 }
1169
1170 static void be_rx_queues_destroy(struct be_adapter *adapter)
1171 {
1172 struct be_queue_info *q;
1173
1174 q = &adapter->rx_obj.q;
1175 if (q->created) {
1176 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1177 be_rx_q_clean(adapter);
1178 }
1179 be_queue_free(adapter, q);
1180
1181 q = &adapter->rx_obj.cq;
1182 if (q->created)
1183 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1184 be_queue_free(adapter, q);
1185
1186 q = &adapter->rx_eq.q;
1187 if (q->created)
1188 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1189 be_queue_free(adapter, q);
1190 }
1191
1192 static int be_rx_queues_create(struct be_adapter *adapter)
1193 {
1194 struct be_queue_info *eq, *q, *cq;
1195 int rc;
1196
1197 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1198 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1199 adapter->rx_eq.min_eqd = 0;
1200 adapter->rx_eq.cur_eqd = 0;
1201 adapter->rx_eq.enable_aic = true;
1202
1203 /* Alloc Rx Event queue */
1204 eq = &adapter->rx_eq.q;
1205 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1206 sizeof(struct be_eq_entry));
1207 if (rc)
1208 return rc;
1209
1210 /* Ask BE to create Rx Event queue */
1211 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1212 if (rc)
1213 goto rx_eq_free;
1214
1215 /* Alloc RX eth compl queue */
1216 cq = &adapter->rx_obj.cq;
1217 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1218 sizeof(struct be_eth_rx_compl));
1219 if (rc)
1220 goto rx_eq_destroy;
1221
1222 /* Ask BE to create Rx eth compl queue */
1223 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1224 if (rc)
1225 goto rx_cq_free;
1226
1227 /* Alloc RX eth queue */
1228 q = &adapter->rx_obj.q;
1229 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1230 if (rc)
1231 goto rx_cq_destroy;
1232
1233 /* Ask BE to create Rx eth queue */
1234 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1235 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1236 if (rc)
1237 goto rx_q_free;
1238
1239 return 0;
1240 rx_q_free:
1241 be_queue_free(adapter, q);
1242 rx_cq_destroy:
1243 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1244 rx_cq_free:
1245 be_queue_free(adapter, cq);
1246 rx_eq_destroy:
1247 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1248 rx_eq_free:
1249 be_queue_free(adapter, eq);
1250 return rc;
1251 }
1252 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1253 {
1254 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1255 u32 evt = entry->evt;
1256
1257 if (!evt)
1258 return false;
1259
1260 evt = le32_to_cpu(evt);
1261 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1262 entry->evt = 0;
1263 queue_tail_inc(&eq_obj->q);
1264 return true;
1265 }
1266
1267 static int event_handle(struct be_ctrl_info *ctrl,
1268 struct be_eq_obj *eq_obj)
1269 {
1270 u16 rid = 0, num = 0;
1271
1272 while (event_get(eq_obj, &rid))
1273 num++;
1274
1275 /* We can see an interrupt and no event */
1276 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1277 if (num)
1278 napi_schedule(&eq_obj->napi);
1279
1280 return num;
1281 }
1282
1283 static irqreturn_t be_intx(int irq, void *dev)
1284 {
1285 struct be_adapter *adapter = dev;
1286 struct be_ctrl_info *ctrl = &adapter->ctrl;
1287 int isr;
1288
1289 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
1290 ctrl->pci_func * CEV_ISR_SIZE);
1291 if (!isr)
1292 return IRQ_NONE;
1293
1294 event_handle(ctrl, &adapter->tx_eq);
1295 event_handle(ctrl, &adapter->rx_eq);
1296
1297 return IRQ_HANDLED;
1298 }
1299
1300 static irqreturn_t be_msix_rx(int irq, void *dev)
1301 {
1302 struct be_adapter *adapter = dev;
1303
1304 event_handle(&adapter->ctrl, &adapter->rx_eq);
1305
1306 return IRQ_HANDLED;
1307 }
1308
1309 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1310 {
1311 struct be_adapter *adapter = dev;
1312
1313 event_handle(&adapter->ctrl, &adapter->tx_eq);
1314
1315 return IRQ_HANDLED;
1316 }
1317
1318 static inline bool do_gro(struct be_adapter *adapter,
1319 struct be_eth_rx_compl *rxcp)
1320 {
1321 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1322 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1323
1324 if (err)
1325 drvr_stats(adapter)->be_rxcp_err++;
1326
1327 return (tcp_frame && !err) ? true : false;
1328 }
1329
1330 int be_poll_rx(struct napi_struct *napi, int budget)
1331 {
1332 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1333 struct be_adapter *adapter =
1334 container_of(rx_eq, struct be_adapter, rx_eq);
1335 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1336 struct be_eth_rx_compl *rxcp;
1337 u32 work_done;
1338
1339 for (work_done = 0; work_done < budget; work_done++) {
1340 rxcp = be_rx_compl_get(adapter);
1341 if (!rxcp)
1342 break;
1343
1344 if (do_gro(adapter, rxcp))
1345 be_rx_compl_process_gro(adapter, rxcp);
1346 else
1347 be_rx_compl_process(adapter, rxcp);
1348
1349 be_rx_compl_reset(rxcp);
1350 }
1351
1352 /* Refill the queue */
1353 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1354 be_post_rx_frags(adapter);
1355
1356 /* All consumed */
1357 if (work_done < budget) {
1358 napi_complete(napi);
1359 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1360 } else {
1361 /* More to be consumed; continue with interrupts disabled */
1362 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1363 }
1364 return work_done;
1365 }
1366
1367 void be_process_tx(struct be_adapter *adapter)
1368 {
1369 struct be_queue_info *txq = &adapter->tx_obj.q;
1370 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1371 struct be_eth_tx_compl *txcp;
1372 u32 num_cmpl = 0;
1373 u16 end_idx;
1374
1375 while ((txcp = be_tx_compl_get(tx_cq))) {
1376 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1377 wrb_index, txcp);
1378 be_tx_compl_process(adapter, end_idx);
1379 num_cmpl++;
1380 }
1381
1382 if (num_cmpl) {
1383 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1384
1385 /* As Tx wrbs have been freed up, wake up netdev queue if
1386 * it was stopped due to lack of tx wrbs.
1387 */
1388 if (netif_queue_stopped(adapter->netdev) &&
1389 atomic_read(&txq->used) < txq->len / 2) {
1390 netif_wake_queue(adapter->netdev);
1391 }
1392
1393 drvr_stats(adapter)->be_tx_events++;
1394 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1395 }
1396 }
1397
1398 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1399 * For TX/MCC we don't honour budget; consume everything
1400 */
1401 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1402 {
1403 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1404 struct be_adapter *adapter =
1405 container_of(tx_eq, struct be_adapter, tx_eq);
1406
1407 napi_complete(napi);
1408
1409 be_process_tx(adapter);
1410
1411 be_process_mcc(&adapter->ctrl);
1412
1413 return 1;
1414 }
1415
1416 static void be_worker(struct work_struct *work)
1417 {
1418 struct be_adapter *adapter =
1419 container_of(work, struct be_adapter, work.work);
1420 int status;
1421
1422 /* Get Stats */
1423 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1424 if (!status)
1425 netdev_stats_update(adapter);
1426
1427 /* Set EQ delay */
1428 be_rx_eqd_update(adapter);
1429
1430 be_tx_rate_update(adapter);
1431 be_rx_rate_update(adapter);
1432
1433 if (adapter->rx_post_starved) {
1434 adapter->rx_post_starved = false;
1435 be_post_rx_frags(adapter);
1436 }
1437
1438 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1439 }
1440
1441 static void be_msix_enable(struct be_adapter *adapter)
1442 {
1443 int i, status;
1444
1445 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1446 adapter->msix_entries[i].entry = i;
1447
1448 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1449 BE_NUM_MSIX_VECTORS);
1450 if (status == 0)
1451 adapter->msix_enabled = true;
1452 return;
1453 }
1454
1455 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1456 {
1457 return adapter->msix_entries[eq_id -
1458 8 * adapter->ctrl.pci_func].vector;
1459 }
1460
1461 static int be_msix_register(struct be_adapter *adapter)
1462 {
1463 struct net_device *netdev = adapter->netdev;
1464 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1465 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1466 int status, vec;
1467
1468 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1469 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1470 status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter);
1471 if (status)
1472 goto err;
1473
1474 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1475 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1476 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1477 if (status) { /* Free TX IRQ */
1478 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1479 free_irq(vec, adapter);
1480 goto err;
1481 }
1482 return 0;
1483 err:
1484 dev_warn(&adapter->pdev->dev,
1485 "MSIX Request IRQ failed - err %d\n", status);
1486 pci_disable_msix(adapter->pdev);
1487 adapter->msix_enabled = false;
1488 return status;
1489 }
1490
1491 static int be_irq_register(struct be_adapter *adapter)
1492 {
1493 struct net_device *netdev = adapter->netdev;
1494 int status;
1495
1496 if (adapter->msix_enabled) {
1497 status = be_msix_register(adapter);
1498 if (status == 0)
1499 goto done;
1500 }
1501
1502 /* INTx */
1503 netdev->irq = adapter->pdev->irq;
1504 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1505 adapter);
1506 if (status) {
1507 dev_err(&adapter->pdev->dev,
1508 "INTx request IRQ failed - err %d\n", status);
1509 return status;
1510 }
1511 done:
1512 adapter->isr_registered = true;
1513 return 0;
1514 }
1515
1516 static void be_irq_unregister(struct be_adapter *adapter)
1517 {
1518 struct net_device *netdev = adapter->netdev;
1519 int vec;
1520
1521 if (!adapter->isr_registered)
1522 return;
1523
1524 /* INTx */
1525 if (!adapter->msix_enabled) {
1526 free_irq(netdev->irq, adapter);
1527 goto done;
1528 }
1529
1530 /* MSIx */
1531 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1532 free_irq(vec, adapter);
1533 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1534 free_irq(vec, adapter);
1535 done:
1536 adapter->isr_registered = false;
1537 return;
1538 }
1539
1540 static int be_open(struct net_device *netdev)
1541 {
1542 struct be_adapter *adapter = netdev_priv(netdev);
1543 struct be_ctrl_info *ctrl = &adapter->ctrl;
1544 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1545 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1546 bool link_up;
1547 int status;
1548
1549 /* First time posting */
1550 be_post_rx_frags(adapter);
1551
1552 napi_enable(&rx_eq->napi);
1553 napi_enable(&tx_eq->napi);
1554
1555 be_irq_register(adapter);
1556
1557 be_intr_set(ctrl, true);
1558
1559 /* The evt queues are created in unarmed state; arm them */
1560 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1561 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1562
1563 /* Rx compl queue may be in unarmed state; rearm it */
1564 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1565
1566 status = be_cmd_link_status_query(ctrl, &link_up);
1567 if (status)
1568 return status;
1569 be_link_status_update(adapter, link_up);
1570
1571 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1572 return 0;
1573 }
1574
1575 static int be_setup(struct be_adapter *adapter)
1576 {
1577 struct be_ctrl_info *ctrl = &adapter->ctrl;
1578 struct net_device *netdev = adapter->netdev;
1579 u32 if_flags;
1580 int status;
1581
1582 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1583 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1584 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1585 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1586 false/* pmac_invalid */, &adapter->if_handle,
1587 &adapter->pmac_id);
1588 if (status != 0)
1589 goto do_none;
1590
1591 be_vid_config(netdev);
1592
1593 status = be_cmd_set_flow_control(ctrl, true, true);
1594 if (status != 0)
1595 goto if_destroy;
1596
1597 status = be_tx_queues_create(adapter);
1598 if (status != 0)
1599 goto if_destroy;
1600
1601 status = be_rx_queues_create(adapter);
1602 if (status != 0)
1603 goto tx_qs_destroy;
1604
1605 status = be_mcc_queues_create(adapter);
1606 if (status != 0)
1607 goto rx_qs_destroy;
1608
1609 return 0;
1610
1611 rx_qs_destroy:
1612 be_rx_queues_destroy(adapter);
1613 tx_qs_destroy:
1614 be_tx_queues_destroy(adapter);
1615 if_destroy:
1616 be_cmd_if_destroy(ctrl, adapter->if_handle);
1617 do_none:
1618 return status;
1619 }
1620
1621 static int be_clear(struct be_adapter *adapter)
1622 {
1623 struct be_ctrl_info *ctrl = &adapter->ctrl;
1624
1625 be_rx_queues_destroy(adapter);
1626 be_tx_queues_destroy(adapter);
1627
1628 be_cmd_if_destroy(ctrl, adapter->if_handle);
1629
1630 be_mcc_queues_destroy(adapter);
1631 return 0;
1632 }
1633
1634 static int be_close(struct net_device *netdev)
1635 {
1636 struct be_adapter *adapter = netdev_priv(netdev);
1637 struct be_ctrl_info *ctrl = &adapter->ctrl;
1638 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1639 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1640 int vec;
1641
1642 cancel_delayed_work_sync(&adapter->work);
1643
1644 netif_stop_queue(netdev);
1645 netif_carrier_off(netdev);
1646 adapter->link_up = false;
1647
1648 be_intr_set(ctrl, false);
1649
1650 if (adapter->msix_enabled) {
1651 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1652 synchronize_irq(vec);
1653 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1654 synchronize_irq(vec);
1655 } else {
1656 synchronize_irq(netdev->irq);
1657 }
1658 be_irq_unregister(adapter);
1659
1660 napi_disable(&rx_eq->napi);
1661 napi_disable(&tx_eq->napi);
1662
1663 return 0;
1664 }
1665
1666 static struct net_device_ops be_netdev_ops = {
1667 .ndo_open = be_open,
1668 .ndo_stop = be_close,
1669 .ndo_start_xmit = be_xmit,
1670 .ndo_get_stats = be_get_stats,
1671 .ndo_set_rx_mode = be_set_multicast_list,
1672 .ndo_set_mac_address = be_mac_addr_set,
1673 .ndo_change_mtu = be_change_mtu,
1674 .ndo_validate_addr = eth_validate_addr,
1675 .ndo_vlan_rx_register = be_vlan_register,
1676 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1677 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1678 };
1679
1680 static void be_netdev_init(struct net_device *netdev)
1681 {
1682 struct be_adapter *adapter = netdev_priv(netdev);
1683
1684 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1685 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1686 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
1687
1688 netdev->flags |= IFF_MULTICAST;
1689
1690 adapter->rx_csum = true;
1691
1692 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1693
1694 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1695
1696 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1697 BE_NAPI_WEIGHT);
1698 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1699 BE_NAPI_WEIGHT);
1700
1701 netif_carrier_off(netdev);
1702 netif_stop_queue(netdev);
1703 }
1704
1705 static void be_unmap_pci_bars(struct be_adapter *adapter)
1706 {
1707 struct be_ctrl_info *ctrl = &adapter->ctrl;
1708 if (ctrl->csr)
1709 iounmap(ctrl->csr);
1710 if (ctrl->db)
1711 iounmap(ctrl->db);
1712 if (ctrl->pcicfg)
1713 iounmap(ctrl->pcicfg);
1714 }
1715
1716 static int be_map_pci_bars(struct be_adapter *adapter)
1717 {
1718 u8 __iomem *addr;
1719
1720 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1721 pci_resource_len(adapter->pdev, 2));
1722 if (addr == NULL)
1723 return -ENOMEM;
1724 adapter->ctrl.csr = addr;
1725
1726 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1727 128 * 1024);
1728 if (addr == NULL)
1729 goto pci_map_err;
1730 adapter->ctrl.db = addr;
1731
1732 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1733 pci_resource_len(adapter->pdev, 1));
1734 if (addr == NULL)
1735 goto pci_map_err;
1736 adapter->ctrl.pcicfg = addr;
1737
1738 return 0;
1739 pci_map_err:
1740 be_unmap_pci_bars(adapter);
1741 return -ENOMEM;
1742 }
1743
1744
1745 static void be_ctrl_cleanup(struct be_adapter *adapter)
1746 {
1747 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1748
1749 be_unmap_pci_bars(adapter);
1750
1751 if (mem->va)
1752 pci_free_consistent(adapter->pdev, mem->size,
1753 mem->va, mem->dma);
1754 }
1755
1756 /* Initialize the mbox required to send cmds to BE */
1757 static int be_ctrl_init(struct be_adapter *adapter)
1758 {
1759 struct be_ctrl_info *ctrl = &adapter->ctrl;
1760 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1761 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1762 int status;
1763 u32 val;
1764
1765 status = be_map_pci_bars(adapter);
1766 if (status)
1767 return status;
1768
1769 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1770 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1771 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1772 if (!mbox_mem_alloc->va) {
1773 be_unmap_pci_bars(adapter);
1774 return -1;
1775 }
1776 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1777 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1778 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1779 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1780 spin_lock_init(&ctrl->mbox_lock);
1781 spin_lock_init(&ctrl->mcc_lock);
1782 spin_lock_init(&ctrl->mcc_cq_lock);
1783
1784 ctrl->async_cb = be_link_status_update;
1785 ctrl->adapter_ctxt = adapter;
1786
1787 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1788 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1789 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1790 return 0;
1791 }
1792
1793 static void be_stats_cleanup(struct be_adapter *adapter)
1794 {
1795 struct be_stats_obj *stats = &adapter->stats;
1796 struct be_dma_mem *cmd = &stats->cmd;
1797
1798 if (cmd->va)
1799 pci_free_consistent(adapter->pdev, cmd->size,
1800 cmd->va, cmd->dma);
1801 }
1802
1803 static int be_stats_init(struct be_adapter *adapter)
1804 {
1805 struct be_stats_obj *stats = &adapter->stats;
1806 struct be_dma_mem *cmd = &stats->cmd;
1807
1808 cmd->size = sizeof(struct be_cmd_req_get_stats);
1809 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1810 if (cmd->va == NULL)
1811 return -1;
1812 return 0;
1813 }
1814
1815 static void __devexit be_remove(struct pci_dev *pdev)
1816 {
1817 struct be_adapter *adapter = pci_get_drvdata(pdev);
1818 if (!adapter)
1819 return;
1820
1821 unregister_netdev(adapter->netdev);
1822
1823 be_clear(adapter);
1824
1825 be_stats_cleanup(adapter);
1826
1827 be_ctrl_cleanup(adapter);
1828
1829 if (adapter->msix_enabled) {
1830 pci_disable_msix(adapter->pdev);
1831 adapter->msix_enabled = false;
1832 }
1833
1834 pci_set_drvdata(pdev, NULL);
1835 pci_release_regions(pdev);
1836 pci_disable_device(pdev);
1837
1838 free_netdev(adapter->netdev);
1839 }
1840
1841 static int be_hw_up(struct be_adapter *adapter)
1842 {
1843 struct be_ctrl_info *ctrl = &adapter->ctrl;
1844 int status;
1845
1846 status = be_cmd_POST(ctrl);
1847 if (status)
1848 return status;
1849
1850 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1851 if (status)
1852 return status;
1853
1854 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1855 return status;
1856 }
1857
1858 static int __devinit be_probe(struct pci_dev *pdev,
1859 const struct pci_device_id *pdev_id)
1860 {
1861 int status = 0;
1862 struct be_adapter *adapter;
1863 struct net_device *netdev;
1864 struct be_ctrl_info *ctrl;
1865 u8 mac[ETH_ALEN];
1866
1867 status = pci_enable_device(pdev);
1868 if (status)
1869 goto do_none;
1870
1871 status = pci_request_regions(pdev, DRV_NAME);
1872 if (status)
1873 goto disable_dev;
1874 pci_set_master(pdev);
1875
1876 netdev = alloc_etherdev(sizeof(struct be_adapter));
1877 if (netdev == NULL) {
1878 status = -ENOMEM;
1879 goto rel_reg;
1880 }
1881 adapter = netdev_priv(netdev);
1882 adapter->pdev = pdev;
1883 pci_set_drvdata(pdev, adapter);
1884 adapter->netdev = netdev;
1885
1886 be_msix_enable(adapter);
1887
1888 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1889 if (!status) {
1890 netdev->features |= NETIF_F_HIGHDMA;
1891 } else {
1892 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1893 if (status) {
1894 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1895 goto free_netdev;
1896 }
1897 }
1898
1899 ctrl = &adapter->ctrl;
1900 status = be_ctrl_init(adapter);
1901 if (status)
1902 goto free_netdev;
1903
1904 status = be_stats_init(adapter);
1905 if (status)
1906 goto ctrl_clean;
1907
1908 status = be_hw_up(adapter);
1909 if (status)
1910 goto stats_clean;
1911
1912 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1913 true /* permanent */, 0);
1914 if (status)
1915 goto stats_clean;
1916 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1917
1918 INIT_DELAYED_WORK(&adapter->work, be_worker);
1919 be_netdev_init(netdev);
1920 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1921
1922 status = be_setup(adapter);
1923 if (status)
1924 goto stats_clean;
1925 status = register_netdev(netdev);
1926 if (status != 0)
1927 goto unsetup;
1928
1929 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1930 return 0;
1931
1932 unsetup:
1933 be_clear(adapter);
1934 stats_clean:
1935 be_stats_cleanup(adapter);
1936 ctrl_clean:
1937 be_ctrl_cleanup(adapter);
1938 free_netdev:
1939 free_netdev(adapter->netdev);
1940 rel_reg:
1941 pci_release_regions(pdev);
1942 disable_dev:
1943 pci_disable_device(pdev);
1944 do_none:
1945 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1946 return status;
1947 }
1948
1949 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1950 {
1951 struct be_adapter *adapter = pci_get_drvdata(pdev);
1952 struct net_device *netdev = adapter->netdev;
1953
1954 netif_device_detach(netdev);
1955 if (netif_running(netdev)) {
1956 rtnl_lock();
1957 be_close(netdev);
1958 be_clear(adapter);
1959 rtnl_unlock();
1960 }
1961
1962 pci_save_state(pdev);
1963 pci_disable_device(pdev);
1964 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1965 return 0;
1966 }
1967
1968 static int be_resume(struct pci_dev *pdev)
1969 {
1970 int status = 0;
1971 struct be_adapter *adapter = pci_get_drvdata(pdev);
1972 struct net_device *netdev = adapter->netdev;
1973
1974 netif_device_detach(netdev);
1975
1976 status = pci_enable_device(pdev);
1977 if (status)
1978 return status;
1979
1980 pci_set_power_state(pdev, 0);
1981 pci_restore_state(pdev);
1982
1983 if (netif_running(netdev)) {
1984 rtnl_lock();
1985 be_setup(adapter);
1986 be_open(netdev);
1987 rtnl_unlock();
1988 }
1989 netif_device_attach(netdev);
1990 return 0;
1991 }
1992
1993 static struct pci_driver be_driver = {
1994 .name = DRV_NAME,
1995 .id_table = be_dev_ids,
1996 .probe = be_probe,
1997 .remove = be_remove,
1998 .suspend = be_suspend,
1999 .resume = be_resume
2000 };
2001
2002 static int __init be_init_module(void)
2003 {
2004 if (rx_frag_size != 8192 && rx_frag_size != 4096
2005 && rx_frag_size != 2048) {
2006 printk(KERN_WARNING DRV_NAME
2007 " : Module param rx_frag_size must be 2048/4096/8192."
2008 " Using 2048\n");
2009 rx_frag_size = 2048;
2010 }
2011 /* Ensure rx_frag_size is aligned to chache line */
2012 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
2013 printk(KERN_WARNING DRV_NAME
2014 " : Bad module param rx_frag_size. Using 2048\n");
2015 rx_frag_size = 2048;
2016 }
2017
2018 return pci_register_driver(&be_driver);
2019 }
2020 module_init(be_init_module);
2021
2022 static void __exit be_exit_module(void)
2023 {
2024 pci_unregister_driver(&be_driver);
2025 }
2026 module_exit(be_exit_module);
Linux kernel - Deliverables
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