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[mirror_ubuntu-jammy-kernel.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 LRO 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 LRO is enabled */
793 static void be_rx_compl_process_lro(struct be_adapter *adapter,
794 struct be_eth_rx_compl *rxcp)
795 {
796 struct be_rx_page_info *page_info;
797 struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
798 struct be_queue_info *rxq = &adapter->rx_obj.q;
799 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
800 u16 i, rxq_idx = 0, vid, j;
801
802 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
803 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
804 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
805 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
806
807 remaining = pkt_size;
808 for (i = 0, j = -1; i < num_rcvd; i++) {
809 page_info = get_rx_page_info(adapter, rxq_idx);
810
811 curr_frag_len = min(remaining, rx_frag_size);
812
813 /* Coalesce all frags from the same physical page in one slot */
814 if (i == 0 || page_info->page_offset == 0) {
815 /* First frag or Fresh page */
816 j++;
817 rx_frags[j].page = page_info->page;
818 rx_frags[j].page_offset = page_info->page_offset;
819 rx_frags[j].size = 0;
820 } else {
821 put_page(page_info->page);
822 }
823 rx_frags[j].size += curr_frag_len;
824
825 remaining -= curr_frag_len;
826 index_inc(&rxq_idx, rxq->len);
827 memset(page_info, 0, sizeof(*page_info));
828 }
829 BUG_ON(j > MAX_SKB_FRAGS);
830
831 if (likely(!vlanf)) {
832 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
833 pkt_size, NULL, 0);
834 } else {
835 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
836 vid = be16_to_cpu(vid);
837
838 if (!adapter->vlan_grp || adapter->num_vlans == 0)
839 return;
840
841 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
842 rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
843 vid, NULL, 0);
844 }
845
846 be_rx_stats_update(adapter, pkt_size, num_rcvd);
847 return;
848 }
849
850 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
851 {
852 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
853
854 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
855 return NULL;
856
857 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
858
859 queue_tail_inc(&adapter->rx_obj.cq);
860 return rxcp;
861 }
862
863 /* To reset the valid bit, we need to reset the whole word as
864 * when walking the queue the valid entries are little-endian
865 * and invalid entries are host endian
866 */
867 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
868 {
869 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
870 }
871
872 static inline struct page *be_alloc_pages(u32 size)
873 {
874 gfp_t alloc_flags = GFP_ATOMIC;
875 u32 order = get_order(size);
876 if (order > 0)
877 alloc_flags |= __GFP_COMP;
878 return alloc_pages(alloc_flags, order);
879 }
880
881 /*
882 * Allocate a page, split it to fragments of size rx_frag_size and post as
883 * receive buffers to BE
884 */
885 static void be_post_rx_frags(struct be_adapter *adapter)
886 {
887 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
888 struct be_rx_page_info *page_info = NULL;
889 struct be_queue_info *rxq = &adapter->rx_obj.q;
890 struct page *pagep = NULL;
891 struct be_eth_rx_d *rxd;
892 u64 page_dmaaddr = 0, frag_dmaaddr;
893 u32 posted, page_offset = 0;
894
895 page_info = &page_info_tbl[rxq->head];
896 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
897 if (!pagep) {
898 pagep = be_alloc_pages(adapter->big_page_size);
899 if (unlikely(!pagep)) {
900 drvr_stats(adapter)->be_ethrx_post_fail++;
901 break;
902 }
903 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
904 adapter->big_page_size,
905 PCI_DMA_FROMDEVICE);
906 page_info->page_offset = 0;
907 } else {
908 get_page(pagep);
909 page_info->page_offset = page_offset + rx_frag_size;
910 }
911 page_offset = page_info->page_offset;
912 page_info->page = pagep;
913 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
914 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
915
916 rxd = queue_head_node(rxq);
917 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
918 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
919 queue_head_inc(rxq);
920
921 /* Any space left in the current big page for another frag? */
922 if ((page_offset + rx_frag_size + rx_frag_size) >
923 adapter->big_page_size) {
924 pagep = NULL;
925 page_info->last_page_user = true;
926 }
927 page_info = &page_info_tbl[rxq->head];
928 }
929 if (pagep)
930 page_info->last_page_user = true;
931
932 if (posted) {
933 atomic_add(posted, &rxq->used);
934 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
935 } else if (atomic_read(&rxq->used) == 0) {
936 /* Let be_worker replenish when memory is available */
937 adapter->rx_post_starved = true;
938 }
939
940 return;
941 }
942
943 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
944 {
945 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
946
947 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
948 return NULL;
949
950 be_dws_le_to_cpu(txcp, sizeof(*txcp));
951
952 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
953
954 queue_tail_inc(tx_cq);
955 return txcp;
956 }
957
958 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
959 {
960 struct be_queue_info *txq = &adapter->tx_obj.q;
961 struct be_eth_wrb *wrb;
962 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
963 struct sk_buff *sent_skb;
964 u64 busaddr;
965 u16 cur_index, num_wrbs = 0;
966
967 cur_index = txq->tail;
968 sent_skb = sent_skbs[cur_index];
969 BUG_ON(!sent_skb);
970 sent_skbs[cur_index] = NULL;
971
972 do {
973 cur_index = txq->tail;
974 wrb = queue_tail_node(txq);
975 be_dws_le_to_cpu(wrb, sizeof(*wrb));
976 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
977 if (busaddr != 0) {
978 pci_unmap_single(adapter->pdev, busaddr,
979 wrb->frag_len, PCI_DMA_TODEVICE);
980 }
981 num_wrbs++;
982 queue_tail_inc(txq);
983 } while (cur_index != last_index);
984
985 atomic_sub(num_wrbs, &txq->used);
986
987 kfree_skb(sent_skb);
988 }
989
990 static void be_rx_q_clean(struct be_adapter *adapter)
991 {
992 struct be_rx_page_info *page_info;
993 struct be_queue_info *rxq = &adapter->rx_obj.q;
994 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
995 struct be_eth_rx_compl *rxcp;
996 u16 tail;
997
998 /* First cleanup pending rx completions */
999 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1000 be_rx_compl_discard(adapter, rxcp);
1001 be_rx_compl_reset(rxcp);
1002 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1003 }
1004
1005 /* Then free posted rx buffer that were not used */
1006 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1007 for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1008 page_info = get_rx_page_info(adapter, tail);
1009 put_page(page_info->page);
1010 memset(page_info, 0, sizeof(*page_info));
1011 }
1012 BUG_ON(atomic_read(&rxq->used));
1013 }
1014
1015 static void be_tx_q_clean(struct be_adapter *adapter)
1016 {
1017 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1018 struct sk_buff *sent_skb;
1019 struct be_queue_info *txq = &adapter->tx_obj.q;
1020 u16 last_index;
1021 bool dummy_wrb;
1022
1023 while (atomic_read(&txq->used)) {
1024 sent_skb = sent_skbs[txq->tail];
1025 last_index = txq->tail;
1026 index_adv(&last_index,
1027 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1028 be_tx_compl_process(adapter, last_index);
1029 }
1030 }
1031
1032 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1033 {
1034 struct be_queue_info *q;
1035 struct be_ctrl_info *ctrl = &adapter->ctrl;
1036
1037 q = &ctrl->mcc_obj.q;
1038 if (q->created)
1039 be_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
1040 be_queue_free(adapter, q);
1041
1042 q = &ctrl->mcc_obj.cq;
1043 if (q->created)
1044 be_cmd_q_destroy(ctrl, q, QTYPE_CQ);
1045 be_queue_free(adapter, q);
1046 }
1047
1048 /* Must be called only after TX qs are created as MCC shares TX EQ */
1049 static int be_mcc_queues_create(struct be_adapter *adapter)
1050 {
1051 struct be_queue_info *q, *cq;
1052 struct be_ctrl_info *ctrl = &adapter->ctrl;
1053
1054 /* Alloc MCC compl queue */
1055 cq = &ctrl->mcc_obj.cq;
1056 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1057 sizeof(struct be_mcc_cq_entry)))
1058 goto err;
1059
1060 /* Ask BE to create MCC compl queue; share TX's eq */
1061 if (be_cmd_cq_create(ctrl, cq, &adapter->tx_eq.q, false, true, 0))
1062 goto mcc_cq_free;
1063
1064 /* Alloc MCC queue */
1065 q = &ctrl->mcc_obj.q;
1066 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1067 goto mcc_cq_destroy;
1068
1069 /* Ask BE to create MCC queue */
1070 if (be_cmd_mccq_create(ctrl, q, cq))
1071 goto mcc_q_free;
1072
1073 return 0;
1074
1075 mcc_q_free:
1076 be_queue_free(adapter, q);
1077 mcc_cq_destroy:
1078 be_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
1079 mcc_cq_free:
1080 be_queue_free(adapter, cq);
1081 err:
1082 return -1;
1083 }
1084
1085 static void be_tx_queues_destroy(struct be_adapter *adapter)
1086 {
1087 struct be_queue_info *q;
1088
1089 q = &adapter->tx_obj.q;
1090 if (q->created) {
1091 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1092
1093 /* No more tx completions can be rcvd now; clean up if there
1094 * are any pending completions or pending tx requests */
1095 be_tx_q_clean(adapter);
1096 }
1097 be_queue_free(adapter, q);
1098
1099 q = &adapter->tx_obj.cq;
1100 if (q->created)
1101 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1102 be_queue_free(adapter, q);
1103
1104 q = &adapter->tx_eq.q;
1105 if (q->created)
1106 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1107 be_queue_free(adapter, q);
1108 }
1109
1110 static int be_tx_queues_create(struct be_adapter *adapter)
1111 {
1112 struct be_queue_info *eq, *q, *cq;
1113
1114 adapter->tx_eq.max_eqd = 0;
1115 adapter->tx_eq.min_eqd = 0;
1116 adapter->tx_eq.cur_eqd = 96;
1117 adapter->tx_eq.enable_aic = false;
1118 /* Alloc Tx Event queue */
1119 eq = &adapter->tx_eq.q;
1120 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1121 return -1;
1122
1123 /* Ask BE to create Tx Event queue */
1124 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1125 goto tx_eq_free;
1126 /* Alloc TX eth compl queue */
1127 cq = &adapter->tx_obj.cq;
1128 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1129 sizeof(struct be_eth_tx_compl)))
1130 goto tx_eq_destroy;
1131
1132 /* Ask BE to create Tx eth compl queue */
1133 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1134 goto tx_cq_free;
1135
1136 /* Alloc TX eth queue */
1137 q = &adapter->tx_obj.q;
1138 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1139 goto tx_cq_destroy;
1140
1141 /* Ask BE to create Tx eth queue */
1142 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1143 goto tx_q_free;
1144 return 0;
1145
1146 tx_q_free:
1147 be_queue_free(adapter, q);
1148 tx_cq_destroy:
1149 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1150 tx_cq_free:
1151 be_queue_free(adapter, cq);
1152 tx_eq_destroy:
1153 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1154 tx_eq_free:
1155 be_queue_free(adapter, eq);
1156 return -1;
1157 }
1158
1159 static void be_rx_queues_destroy(struct be_adapter *adapter)
1160 {
1161 struct be_queue_info *q;
1162
1163 q = &adapter->rx_obj.q;
1164 if (q->created) {
1165 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1166 be_rx_q_clean(adapter);
1167 }
1168 be_queue_free(adapter, q);
1169
1170 q = &adapter->rx_obj.cq;
1171 if (q->created)
1172 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1173 be_queue_free(adapter, q);
1174
1175 q = &adapter->rx_eq.q;
1176 if (q->created)
1177 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1178 be_queue_free(adapter, q);
1179 }
1180
1181 static int be_rx_queues_create(struct be_adapter *adapter)
1182 {
1183 struct be_queue_info *eq, *q, *cq;
1184 int rc;
1185
1186 adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1187 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1188 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1189 adapter->rx_eq.min_eqd = 0;
1190 adapter->rx_eq.cur_eqd = 0;
1191 adapter->rx_eq.enable_aic = true;
1192
1193 /* Alloc Rx Event queue */
1194 eq = &adapter->rx_eq.q;
1195 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1196 sizeof(struct be_eq_entry));
1197 if (rc)
1198 return rc;
1199
1200 /* Ask BE to create Rx Event queue */
1201 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1202 if (rc)
1203 goto rx_eq_free;
1204
1205 /* Alloc RX eth compl queue */
1206 cq = &adapter->rx_obj.cq;
1207 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1208 sizeof(struct be_eth_rx_compl));
1209 if (rc)
1210 goto rx_eq_destroy;
1211
1212 /* Ask BE to create Rx eth compl queue */
1213 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1214 if (rc)
1215 goto rx_cq_free;
1216
1217 /* Alloc RX eth queue */
1218 q = &adapter->rx_obj.q;
1219 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1220 if (rc)
1221 goto rx_cq_destroy;
1222
1223 /* Ask BE to create Rx eth queue */
1224 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1225 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1226 if (rc)
1227 goto rx_q_free;
1228
1229 return 0;
1230 rx_q_free:
1231 be_queue_free(adapter, q);
1232 rx_cq_destroy:
1233 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1234 rx_cq_free:
1235 be_queue_free(adapter, cq);
1236 rx_eq_destroy:
1237 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1238 rx_eq_free:
1239 be_queue_free(adapter, eq);
1240 return rc;
1241 }
1242 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1243 {
1244 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1245 u32 evt = entry->evt;
1246
1247 if (!evt)
1248 return false;
1249
1250 evt = le32_to_cpu(evt);
1251 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1252 entry->evt = 0;
1253 queue_tail_inc(&eq_obj->q);
1254 return true;
1255 }
1256
1257 static int event_handle(struct be_ctrl_info *ctrl,
1258 struct be_eq_obj *eq_obj)
1259 {
1260 u16 rid = 0, num = 0;
1261
1262 while (event_get(eq_obj, &rid))
1263 num++;
1264
1265 /* We can see an interrupt and no event */
1266 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1267 if (num)
1268 napi_schedule(&eq_obj->napi);
1269
1270 return num;
1271 }
1272
1273 static irqreturn_t be_intx(int irq, void *dev)
1274 {
1275 struct be_adapter *adapter = dev;
1276 struct be_ctrl_info *ctrl = &adapter->ctrl;
1277 int isr;
1278
1279 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
1280 ctrl->pci_func * CEV_ISR_SIZE);
1281 if (!isr)
1282 return IRQ_NONE;
1283
1284 event_handle(ctrl, &adapter->tx_eq);
1285 event_handle(ctrl, &adapter->rx_eq);
1286
1287 return IRQ_HANDLED;
1288 }
1289
1290 static irqreturn_t be_msix_rx(int irq, void *dev)
1291 {
1292 struct be_adapter *adapter = dev;
1293
1294 event_handle(&adapter->ctrl, &adapter->rx_eq);
1295
1296 return IRQ_HANDLED;
1297 }
1298
1299 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1300 {
1301 struct be_adapter *adapter = dev;
1302
1303 event_handle(&adapter->ctrl, &adapter->tx_eq);
1304
1305 return IRQ_HANDLED;
1306 }
1307
1308 static inline bool do_lro(struct be_adapter *adapter,
1309 struct be_eth_rx_compl *rxcp)
1310 {
1311 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1312 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1313
1314 if (err)
1315 drvr_stats(adapter)->be_rxcp_err++;
1316
1317 return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1318 false : true;
1319 }
1320
1321 int be_poll_rx(struct napi_struct *napi, int budget)
1322 {
1323 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1324 struct be_adapter *adapter =
1325 container_of(rx_eq, struct be_adapter, rx_eq);
1326 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1327 struct be_eth_rx_compl *rxcp;
1328 u32 work_done;
1329
1330 for (work_done = 0; work_done < budget; work_done++) {
1331 rxcp = be_rx_compl_get(adapter);
1332 if (!rxcp)
1333 break;
1334
1335 if (do_lro(adapter, rxcp))
1336 be_rx_compl_process_lro(adapter, rxcp);
1337 else
1338 be_rx_compl_process(adapter, rxcp);
1339
1340 be_rx_compl_reset(rxcp);
1341 }
1342
1343 lro_flush_all(&adapter->rx_obj.lro_mgr);
1344
1345 /* Refill the queue */
1346 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1347 be_post_rx_frags(adapter);
1348
1349 /* All consumed */
1350 if (work_done < budget) {
1351 napi_complete(napi);
1352 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1353 } else {
1354 /* More to be consumed; continue with interrupts disabled */
1355 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1356 }
1357 return work_done;
1358 }
1359
1360 void be_process_tx(struct be_adapter *adapter)
1361 {
1362 struct be_queue_info *txq = &adapter->tx_obj.q;
1363 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1364 struct be_eth_tx_compl *txcp;
1365 u32 num_cmpl = 0;
1366 u16 end_idx;
1367
1368 while ((txcp = be_tx_compl_get(tx_cq))) {
1369 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1370 wrb_index, txcp);
1371 be_tx_compl_process(adapter, end_idx);
1372 num_cmpl++;
1373 }
1374
1375 if (num_cmpl) {
1376 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1377
1378 /* As Tx wrbs have been freed up, wake up netdev queue if
1379 * it was stopped due to lack of tx wrbs.
1380 */
1381 if (netif_queue_stopped(adapter->netdev) &&
1382 atomic_read(&txq->used) < txq->len / 2) {
1383 netif_wake_queue(adapter->netdev);
1384 }
1385
1386 drvr_stats(adapter)->be_tx_events++;
1387 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1388 }
1389 }
1390
1391 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1392 * For TX/MCC we don't honour budget; consume everything
1393 */
1394 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1395 {
1396 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1397 struct be_adapter *adapter =
1398 container_of(tx_eq, struct be_adapter, tx_eq);
1399
1400 napi_complete(napi);
1401
1402 be_process_tx(adapter);
1403
1404 be_process_mcc(&adapter->ctrl);
1405
1406 return 1;
1407 }
1408
1409 static void be_worker(struct work_struct *work)
1410 {
1411 struct be_adapter *adapter =
1412 container_of(work, struct be_adapter, work.work);
1413 int status;
1414
1415 /* Get Stats */
1416 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1417 if (!status)
1418 netdev_stats_update(adapter);
1419
1420 /* Set EQ delay */
1421 be_rx_eqd_update(adapter);
1422
1423 be_tx_rate_update(adapter);
1424 be_rx_rate_update(adapter);
1425
1426 if (adapter->rx_post_starved) {
1427 adapter->rx_post_starved = false;
1428 be_post_rx_frags(adapter);
1429 }
1430
1431 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1432 }
1433
1434 static void be_msix_enable(struct be_adapter *adapter)
1435 {
1436 int i, status;
1437
1438 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1439 adapter->msix_entries[i].entry = i;
1440
1441 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1442 BE_NUM_MSIX_VECTORS);
1443 if (status == 0)
1444 adapter->msix_enabled = true;
1445 return;
1446 }
1447
1448 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1449 {
1450 return adapter->msix_entries[eq_id -
1451 8 * adapter->ctrl.pci_func].vector;
1452 }
1453
1454 static int be_msix_register(struct be_adapter *adapter)
1455 {
1456 struct net_device *netdev = adapter->netdev;
1457 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1458 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1459 int status, vec;
1460
1461 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1462 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1463 status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter);
1464 if (status)
1465 goto err;
1466
1467 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1468 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1469 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1470 if (status) { /* Free TX IRQ */
1471 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1472 free_irq(vec, adapter);
1473 goto err;
1474 }
1475 return 0;
1476 err:
1477 dev_warn(&adapter->pdev->dev,
1478 "MSIX Request IRQ failed - err %d\n", status);
1479 pci_disable_msix(adapter->pdev);
1480 adapter->msix_enabled = false;
1481 return status;
1482 }
1483
1484 static int be_irq_register(struct be_adapter *adapter)
1485 {
1486 struct net_device *netdev = adapter->netdev;
1487 int status;
1488
1489 if (adapter->msix_enabled) {
1490 status = be_msix_register(adapter);
1491 if (status == 0)
1492 goto done;
1493 }
1494
1495 /* INTx */
1496 netdev->irq = adapter->pdev->irq;
1497 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1498 adapter);
1499 if (status) {
1500 dev_err(&adapter->pdev->dev,
1501 "INTx request IRQ failed - err %d\n", status);
1502 return status;
1503 }
1504 done:
1505 adapter->isr_registered = true;
1506 return 0;
1507 }
1508
1509 static void be_irq_unregister(struct be_adapter *adapter)
1510 {
1511 struct net_device *netdev = adapter->netdev;
1512 int vec;
1513
1514 if (!adapter->isr_registered)
1515 return;
1516
1517 /* INTx */
1518 if (!adapter->msix_enabled) {
1519 free_irq(netdev->irq, adapter);
1520 goto done;
1521 }
1522
1523 /* MSIx */
1524 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1525 free_irq(vec, adapter);
1526 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1527 free_irq(vec, adapter);
1528 done:
1529 adapter->isr_registered = false;
1530 return;
1531 }
1532
1533 static int be_open(struct net_device *netdev)
1534 {
1535 struct be_adapter *adapter = netdev_priv(netdev);
1536 struct be_ctrl_info *ctrl = &adapter->ctrl;
1537 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1538 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1539 bool link_up;
1540 int status;
1541
1542 /* First time posting */
1543 be_post_rx_frags(adapter);
1544
1545 napi_enable(&rx_eq->napi);
1546 napi_enable(&tx_eq->napi);
1547
1548 be_irq_register(adapter);
1549
1550 be_intr_set(ctrl, true);
1551
1552 /* The evt queues are created in unarmed state; arm them */
1553 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1554 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1555
1556 /* Rx compl queue may be in unarmed state; rearm it */
1557 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1558
1559 status = be_cmd_link_status_query(ctrl, &link_up);
1560 if (status)
1561 return status;
1562 be_link_status_update(adapter, link_up);
1563
1564 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1565 return 0;
1566 }
1567
1568 static int be_setup(struct be_adapter *adapter)
1569 {
1570 struct be_ctrl_info *ctrl = &adapter->ctrl;
1571 struct net_device *netdev = adapter->netdev;
1572 u32 if_flags;
1573 int status;
1574
1575 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1576 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1577 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1578 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1579 false/* pmac_invalid */, &adapter->if_handle,
1580 &adapter->pmac_id);
1581 if (status != 0)
1582 goto do_none;
1583
1584 be_vid_config(netdev);
1585
1586 status = be_cmd_set_flow_control(ctrl, true, true);
1587 if (status != 0)
1588 goto if_destroy;
1589
1590 status = be_tx_queues_create(adapter);
1591 if (status != 0)
1592 goto if_destroy;
1593
1594 status = be_rx_queues_create(adapter);
1595 if (status != 0)
1596 goto tx_qs_destroy;
1597
1598 status = be_mcc_queues_create(adapter);
1599 if (status != 0)
1600 goto rx_qs_destroy;
1601
1602 return 0;
1603
1604 rx_qs_destroy:
1605 be_rx_queues_destroy(adapter);
1606 tx_qs_destroy:
1607 be_tx_queues_destroy(adapter);
1608 if_destroy:
1609 be_cmd_if_destroy(ctrl, adapter->if_handle);
1610 do_none:
1611 return status;
1612 }
1613
1614 static int be_clear(struct be_adapter *adapter)
1615 {
1616 struct be_ctrl_info *ctrl = &adapter->ctrl;
1617
1618 be_rx_queues_destroy(adapter);
1619 be_tx_queues_destroy(adapter);
1620
1621 be_cmd_if_destroy(ctrl, adapter->if_handle);
1622
1623 be_mcc_queues_destroy(adapter);
1624 return 0;
1625 }
1626
1627 static int be_close(struct net_device *netdev)
1628 {
1629 struct be_adapter *adapter = netdev_priv(netdev);
1630 struct be_ctrl_info *ctrl = &adapter->ctrl;
1631 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1632 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1633 int vec;
1634
1635 cancel_delayed_work_sync(&adapter->work);
1636
1637 netif_stop_queue(netdev);
1638 netif_carrier_off(netdev);
1639 adapter->link_up = false;
1640
1641 be_intr_set(ctrl, false);
1642
1643 if (adapter->msix_enabled) {
1644 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1645 synchronize_irq(vec);
1646 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1647 synchronize_irq(vec);
1648 } else {
1649 synchronize_irq(netdev->irq);
1650 }
1651 be_irq_unregister(adapter);
1652
1653 napi_disable(&rx_eq->napi);
1654 napi_disable(&tx_eq->napi);
1655
1656 return 0;
1657 }
1658
1659 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1660 void **ip_hdr, void **tcpudp_hdr,
1661 u64 *hdr_flags, void *priv)
1662 {
1663 struct ethhdr *eh;
1664 struct vlan_ethhdr *veh;
1665 struct iphdr *iph;
1666 u8 *va = page_address(frag->page) + frag->page_offset;
1667 unsigned long ll_hlen;
1668
1669 prefetch(va);
1670 eh = (struct ethhdr *)va;
1671 *mac_hdr = eh;
1672 ll_hlen = ETH_HLEN;
1673 if (eh->h_proto != htons(ETH_P_IP)) {
1674 if (eh->h_proto == htons(ETH_P_8021Q)) {
1675 veh = (struct vlan_ethhdr *)va;
1676 if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1677 return -1;
1678
1679 ll_hlen += VLAN_HLEN;
1680 } else {
1681 return -1;
1682 }
1683 }
1684 *hdr_flags = LRO_IPV4;
1685 iph = (struct iphdr *)(va + ll_hlen);
1686 *ip_hdr = iph;
1687 if (iph->protocol != IPPROTO_TCP)
1688 return -1;
1689 *hdr_flags |= LRO_TCP;
1690 *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1691
1692 return 0;
1693 }
1694
1695 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1696 {
1697 struct net_lro_mgr *lro_mgr;
1698
1699 lro_mgr = &adapter->rx_obj.lro_mgr;
1700 lro_mgr->dev = netdev;
1701 lro_mgr->features = LRO_F_NAPI;
1702 lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1703 lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1704 lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1705 lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1706 lro_mgr->get_frag_header = be_get_frag_header;
1707 lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1708 }
1709
1710 static struct net_device_ops be_netdev_ops = {
1711 .ndo_open = be_open,
1712 .ndo_stop = be_close,
1713 .ndo_start_xmit = be_xmit,
1714 .ndo_get_stats = be_get_stats,
1715 .ndo_set_rx_mode = be_set_multicast_list,
1716 .ndo_set_mac_address = be_mac_addr_set,
1717 .ndo_change_mtu = be_change_mtu,
1718 .ndo_validate_addr = eth_validate_addr,
1719 .ndo_vlan_rx_register = be_vlan_register,
1720 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1721 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1722 };
1723
1724 static void be_netdev_init(struct net_device *netdev)
1725 {
1726 struct be_adapter *adapter = netdev_priv(netdev);
1727
1728 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1729 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1730 NETIF_F_IPV6_CSUM;
1731
1732 netdev->flags |= IFF_MULTICAST;
1733
1734 adapter->rx_csum = true;
1735
1736 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1737
1738 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1739
1740 be_lro_init(adapter, netdev);
1741
1742 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1743 BE_NAPI_WEIGHT);
1744 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1745 BE_NAPI_WEIGHT);
1746
1747 netif_carrier_off(netdev);
1748 netif_stop_queue(netdev);
1749 }
1750
1751 static void be_unmap_pci_bars(struct be_adapter *adapter)
1752 {
1753 struct be_ctrl_info *ctrl = &adapter->ctrl;
1754 if (ctrl->csr)
1755 iounmap(ctrl->csr);
1756 if (ctrl->db)
1757 iounmap(ctrl->db);
1758 if (ctrl->pcicfg)
1759 iounmap(ctrl->pcicfg);
1760 }
1761
1762 static int be_map_pci_bars(struct be_adapter *adapter)
1763 {
1764 u8 __iomem *addr;
1765
1766 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1767 pci_resource_len(adapter->pdev, 2));
1768 if (addr == NULL)
1769 return -ENOMEM;
1770 adapter->ctrl.csr = addr;
1771
1772 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1773 128 * 1024);
1774 if (addr == NULL)
1775 goto pci_map_err;
1776 adapter->ctrl.db = addr;
1777
1778 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1779 pci_resource_len(adapter->pdev, 1));
1780 if (addr == NULL)
1781 goto pci_map_err;
1782 adapter->ctrl.pcicfg = addr;
1783
1784 return 0;
1785 pci_map_err:
1786 be_unmap_pci_bars(adapter);
1787 return -ENOMEM;
1788 }
1789
1790
1791 static void be_ctrl_cleanup(struct be_adapter *adapter)
1792 {
1793 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1794
1795 be_unmap_pci_bars(adapter);
1796
1797 if (mem->va)
1798 pci_free_consistent(adapter->pdev, mem->size,
1799 mem->va, mem->dma);
1800 }
1801
1802 /* Initialize the mbox required to send cmds to BE */
1803 static int be_ctrl_init(struct be_adapter *adapter)
1804 {
1805 struct be_ctrl_info *ctrl = &adapter->ctrl;
1806 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1807 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1808 int status;
1809 u32 val;
1810
1811 status = be_map_pci_bars(adapter);
1812 if (status)
1813 return status;
1814
1815 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1816 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1817 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1818 if (!mbox_mem_alloc->va) {
1819 be_unmap_pci_bars(adapter);
1820 return -1;
1821 }
1822 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1823 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1824 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1825 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1826 spin_lock_init(&ctrl->mbox_lock);
1827 spin_lock_init(&ctrl->mcc_lock);
1828 spin_lock_init(&ctrl->mcc_cq_lock);
1829
1830 ctrl->async_cb = be_link_status_update;
1831 ctrl->adapter_ctxt = adapter;
1832
1833 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1834 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1835 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1836 return 0;
1837 }
1838
1839 static void be_stats_cleanup(struct be_adapter *adapter)
1840 {
1841 struct be_stats_obj *stats = &adapter->stats;
1842 struct be_dma_mem *cmd = &stats->cmd;
1843
1844 if (cmd->va)
1845 pci_free_consistent(adapter->pdev, cmd->size,
1846 cmd->va, cmd->dma);
1847 }
1848
1849 static int be_stats_init(struct be_adapter *adapter)
1850 {
1851 struct be_stats_obj *stats = &adapter->stats;
1852 struct be_dma_mem *cmd = &stats->cmd;
1853
1854 cmd->size = sizeof(struct be_cmd_req_get_stats);
1855 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1856 if (cmd->va == NULL)
1857 return -1;
1858 return 0;
1859 }
1860
1861 static void __devexit be_remove(struct pci_dev *pdev)
1862 {
1863 struct be_adapter *adapter = pci_get_drvdata(pdev);
1864 if (!adapter)
1865 return;
1866
1867 unregister_netdev(adapter->netdev);
1868
1869 be_clear(adapter);
1870
1871 be_stats_cleanup(adapter);
1872
1873 be_ctrl_cleanup(adapter);
1874
1875 if (adapter->msix_enabled) {
1876 pci_disable_msix(adapter->pdev);
1877 adapter->msix_enabled = false;
1878 }
1879
1880 pci_set_drvdata(pdev, NULL);
1881 pci_release_regions(pdev);
1882 pci_disable_device(pdev);
1883
1884 free_netdev(adapter->netdev);
1885 }
1886
1887 static int be_hw_up(struct be_adapter *adapter)
1888 {
1889 struct be_ctrl_info *ctrl = &adapter->ctrl;
1890 int status;
1891
1892 status = be_cmd_POST(ctrl);
1893 if (status)
1894 return status;
1895
1896 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1897 if (status)
1898 return status;
1899
1900 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1901 return status;
1902 }
1903
1904 static int __devinit be_probe(struct pci_dev *pdev,
1905 const struct pci_device_id *pdev_id)
1906 {
1907 int status = 0;
1908 struct be_adapter *adapter;
1909 struct net_device *netdev;
1910 struct be_ctrl_info *ctrl;
1911 u8 mac[ETH_ALEN];
1912
1913 status = pci_enable_device(pdev);
1914 if (status)
1915 goto do_none;
1916
1917 status = pci_request_regions(pdev, DRV_NAME);
1918 if (status)
1919 goto disable_dev;
1920 pci_set_master(pdev);
1921
1922 netdev = alloc_etherdev(sizeof(struct be_adapter));
1923 if (netdev == NULL) {
1924 status = -ENOMEM;
1925 goto rel_reg;
1926 }
1927 adapter = netdev_priv(netdev);
1928 adapter->pdev = pdev;
1929 pci_set_drvdata(pdev, adapter);
1930 adapter->netdev = netdev;
1931
1932 be_msix_enable(adapter);
1933
1934 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1935 if (!status) {
1936 netdev->features |= NETIF_F_HIGHDMA;
1937 } else {
1938 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1939 if (status) {
1940 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1941 goto free_netdev;
1942 }
1943 }
1944
1945 ctrl = &adapter->ctrl;
1946 status = be_ctrl_init(adapter);
1947 if (status)
1948 goto free_netdev;
1949
1950 status = be_stats_init(adapter);
1951 if (status)
1952 goto ctrl_clean;
1953
1954 status = be_hw_up(adapter);
1955 if (status)
1956 goto stats_clean;
1957
1958 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1959 true /* permanent */, 0);
1960 if (status)
1961 goto stats_clean;
1962 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1963
1964 INIT_DELAYED_WORK(&adapter->work, be_worker);
1965 be_netdev_init(netdev);
1966 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1967
1968 status = be_setup(adapter);
1969 if (status)
1970 goto stats_clean;
1971 status = register_netdev(netdev);
1972 if (status != 0)
1973 goto unsetup;
1974
1975 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1976 return 0;
1977
1978 unsetup:
1979 be_clear(adapter);
1980 stats_clean:
1981 be_stats_cleanup(adapter);
1982 ctrl_clean:
1983 be_ctrl_cleanup(adapter);
1984 free_netdev:
1985 free_netdev(adapter->netdev);
1986 rel_reg:
1987 pci_release_regions(pdev);
1988 disable_dev:
1989 pci_disable_device(pdev);
1990 do_none:
1991 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1992 return status;
1993 }
1994
1995 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1996 {
1997 struct be_adapter *adapter = pci_get_drvdata(pdev);
1998 struct net_device *netdev = adapter->netdev;
1999
2000 netif_device_detach(netdev);
2001 if (netif_running(netdev)) {
2002 rtnl_lock();
2003 be_close(netdev);
2004 be_clear(adapter);
2005 rtnl_unlock();
2006 }
2007
2008 pci_save_state(pdev);
2009 pci_disable_device(pdev);
2010 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2011 return 0;
2012 }
2013
2014 static int be_resume(struct pci_dev *pdev)
2015 {
2016 int status = 0;
2017 struct be_adapter *adapter = pci_get_drvdata(pdev);
2018 struct net_device *netdev = adapter->netdev;
2019
2020 netif_device_detach(netdev);
2021
2022 status = pci_enable_device(pdev);
2023 if (status)
2024 return status;
2025
2026 pci_set_power_state(pdev, 0);
2027 pci_restore_state(pdev);
2028
2029 if (netif_running(netdev)) {
2030 rtnl_lock();
2031 be_setup(adapter);
2032 be_open(netdev);
2033 rtnl_unlock();
2034 }
2035 netif_device_attach(netdev);
2036 return 0;
2037 }
2038
2039 static struct pci_driver be_driver = {
2040 .name = DRV_NAME,
2041 .id_table = be_dev_ids,
2042 .probe = be_probe,
2043 .remove = be_remove,
2044 .suspend = be_suspend,
2045 .resume = be_resume
2046 };
2047
2048 static int __init be_init_module(void)
2049 {
2050 if (rx_frag_size != 8192 && rx_frag_size != 4096
2051 && rx_frag_size != 2048) {
2052 printk(KERN_WARNING DRV_NAME
2053 " : Module param rx_frag_size must be 2048/4096/8192."
2054 " Using 2048\n");
2055 rx_frag_size = 2048;
2056 }
2057 /* Ensure rx_frag_size is aligned to chache line */
2058 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
2059 printk(KERN_WARNING DRV_NAME
2060 " : Bad module param rx_frag_size. Using 2048\n");
2061 rx_frag_size = 2048;
2062 }
2063
2064 return pci_register_driver(&be_driver);
2065 }
2066 module_init(be_init_module);
2067
2068 static void __exit be_exit_module(void)
2069 {
2070 pci_unregister_driver(&be_driver);
2071 }
2072 module_exit(be_exit_module);
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