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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[deliverable/linux.git] / drivers / net / benet / be_main.c
1 /*
2 * Copyright (C) 2005 - 2011 Emulex
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@emulex.com
12 *
13 * Emulex
14 * 3333 Susan Street
15 * Costa Mesa, CA 92626
16 */
17
18 #include "be.h"
19 #include "be_cmds.h"
20 #include <asm/div64.h>
21
22 MODULE_VERSION(DRV_VER);
23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
25 MODULE_AUTHOR("ServerEngines Corporation");
26 MODULE_LICENSE("GPL");
27
28 static ushort rx_frag_size = 2048;
29 static unsigned int num_vfs;
30 module_param(rx_frag_size, ushort, S_IRUGO);
31 module_param(num_vfs, uint, S_IRUGO);
32 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
33 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
34
35 static bool multi_rxq = true;
36 module_param(multi_rxq, bool, S_IRUGO | S_IWUSR);
37 MODULE_PARM_DESC(multi_rxq, "Multi Rx Queue support. Enabled by default");
38
39 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
40 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
41 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
42 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
43 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
44 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
45 { 0 }
46 };
47 MODULE_DEVICE_TABLE(pci, be_dev_ids);
48 /* UE Status Low CSR */
49 static char *ue_status_low_desc[] = {
50 "CEV",
51 "CTX",
52 "DBUF",
53 "ERX",
54 "Host",
55 "MPU",
56 "NDMA",
57 "PTC ",
58 "RDMA ",
59 "RXF ",
60 "RXIPS ",
61 "RXULP0 ",
62 "RXULP1 ",
63 "RXULP2 ",
64 "TIM ",
65 "TPOST ",
66 "TPRE ",
67 "TXIPS ",
68 "TXULP0 ",
69 "TXULP1 ",
70 "UC ",
71 "WDMA ",
72 "TXULP2 ",
73 "HOST1 ",
74 "P0_OB_LINK ",
75 "P1_OB_LINK ",
76 "HOST_GPIO ",
77 "MBOX ",
78 "AXGMAC0",
79 "AXGMAC1",
80 "JTAG",
81 "MPU_INTPEND"
82 };
83 /* UE Status High CSR */
84 static char *ue_status_hi_desc[] = {
85 "LPCMEMHOST",
86 "MGMT_MAC",
87 "PCS0ONLINE",
88 "MPU_IRAM",
89 "PCS1ONLINE",
90 "PCTL0",
91 "PCTL1",
92 "PMEM",
93 "RR",
94 "TXPB",
95 "RXPP",
96 "XAUI",
97 "TXP",
98 "ARM",
99 "IPC",
100 "HOST2",
101 "HOST3",
102 "HOST4",
103 "HOST5",
104 "HOST6",
105 "HOST7",
106 "HOST8",
107 "HOST9",
108 "NETC"
109 "Unknown",
110 "Unknown",
111 "Unknown",
112 "Unknown",
113 "Unknown",
114 "Unknown",
115 "Unknown",
116 "Unknown"
117 };
118
119 static inline bool be_multi_rxq(struct be_adapter *adapter)
120 {
121 return (adapter->num_rx_qs > 1);
122 }
123
124 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
125 {
126 struct be_dma_mem *mem = &q->dma_mem;
127 if (mem->va)
128 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
129 mem->dma);
130 }
131
132 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
133 u16 len, u16 entry_size)
134 {
135 struct be_dma_mem *mem = &q->dma_mem;
136
137 memset(q, 0, sizeof(*q));
138 q->len = len;
139 q->entry_size = entry_size;
140 mem->size = len * entry_size;
141 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size, &mem->dma,
142 GFP_KERNEL);
143 if (!mem->va)
144 return -1;
145 memset(mem->va, 0, mem->size);
146 return 0;
147 }
148
149 static void be_intr_set(struct be_adapter *adapter, bool enable)
150 {
151 u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
152 u32 reg = ioread32(addr);
153 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
154
155 if (adapter->eeh_err)
156 return;
157
158 if (!enabled && enable)
159 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
160 else if (enabled && !enable)
161 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
162 else
163 return;
164
165 iowrite32(reg, addr);
166 }
167
168 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
169 {
170 u32 val = 0;
171 val |= qid & DB_RQ_RING_ID_MASK;
172 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
173
174 wmb();
175 iowrite32(val, adapter->db + DB_RQ_OFFSET);
176 }
177
178 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
179 {
180 u32 val = 0;
181 val |= qid & DB_TXULP_RING_ID_MASK;
182 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
183
184 wmb();
185 iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
186 }
187
188 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
189 bool arm, bool clear_int, u16 num_popped)
190 {
191 u32 val = 0;
192 val |= qid & DB_EQ_RING_ID_MASK;
193 val |= ((qid & DB_EQ_RING_ID_EXT_MASK) <<
194 DB_EQ_RING_ID_EXT_MASK_SHIFT);
195
196 if (adapter->eeh_err)
197 return;
198
199 if (arm)
200 val |= 1 << DB_EQ_REARM_SHIFT;
201 if (clear_int)
202 val |= 1 << DB_EQ_CLR_SHIFT;
203 val |= 1 << DB_EQ_EVNT_SHIFT;
204 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
205 iowrite32(val, adapter->db + DB_EQ_OFFSET);
206 }
207
208 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
209 {
210 u32 val = 0;
211 val |= qid & DB_CQ_RING_ID_MASK;
212 val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
213 DB_CQ_RING_ID_EXT_MASK_SHIFT);
214
215 if (adapter->eeh_err)
216 return;
217
218 if (arm)
219 val |= 1 << DB_CQ_REARM_SHIFT;
220 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
221 iowrite32(val, adapter->db + DB_CQ_OFFSET);
222 }
223
224 static int be_mac_addr_set(struct net_device *netdev, void *p)
225 {
226 struct be_adapter *adapter = netdev_priv(netdev);
227 struct sockaddr *addr = p;
228 int status = 0;
229
230 if (!is_valid_ether_addr(addr->sa_data))
231 return -EADDRNOTAVAIL;
232
233 /* MAC addr configuration will be done in hardware for VFs
234 * by their corresponding PFs. Just copy to netdev addr here
235 */
236 if (!be_physfn(adapter))
237 goto netdev_addr;
238
239 status = be_cmd_pmac_del(adapter, adapter->if_handle,
240 adapter->pmac_id, 0);
241 if (status)
242 return status;
243
244 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
245 adapter->if_handle, &adapter->pmac_id, 0);
246 netdev_addr:
247 if (!status)
248 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
249
250 return status;
251 }
252
253 void netdev_stats_update(struct be_adapter *adapter)
254 {
255 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats_cmd.va);
256 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
257 struct be_port_rxf_stats *port_stats =
258 &rxf_stats->port[adapter->port_num];
259 struct net_device_stats *dev_stats = &adapter->netdev->stats;
260 struct be_erx_stats *erx_stats = &hw_stats->erx;
261 struct be_rx_obj *rxo;
262 int i;
263
264 memset(dev_stats, 0, sizeof(*dev_stats));
265 for_all_rx_queues(adapter, rxo, i) {
266 dev_stats->rx_packets += rx_stats(rxo)->rx_pkts;
267 dev_stats->rx_bytes += rx_stats(rxo)->rx_bytes;
268 dev_stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
269 /* no space in linux buffers: best possible approximation */
270 dev_stats->rx_dropped +=
271 erx_stats->rx_drops_no_fragments[rxo->q.id];
272 }
273
274 dev_stats->tx_packets = tx_stats(adapter)->be_tx_pkts;
275 dev_stats->tx_bytes = tx_stats(adapter)->be_tx_bytes;
276
277 /* bad pkts received */
278 dev_stats->rx_errors = port_stats->rx_crc_errors +
279 port_stats->rx_alignment_symbol_errors +
280 port_stats->rx_in_range_errors +
281 port_stats->rx_out_range_errors +
282 port_stats->rx_frame_too_long +
283 port_stats->rx_dropped_too_small +
284 port_stats->rx_dropped_too_short +
285 port_stats->rx_dropped_header_too_small +
286 port_stats->rx_dropped_tcp_length +
287 port_stats->rx_dropped_runt +
288 port_stats->rx_tcp_checksum_errs +
289 port_stats->rx_ip_checksum_errs +
290 port_stats->rx_udp_checksum_errs;
291
292 /* detailed rx errors */
293 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
294 port_stats->rx_out_range_errors +
295 port_stats->rx_frame_too_long;
296
297 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
298
299 /* frame alignment errors */
300 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
301
302 /* receiver fifo overrun */
303 /* drops_no_pbuf is no per i/f, it's per BE card */
304 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
305 port_stats->rx_input_fifo_overflow +
306 rxf_stats->rx_drops_no_pbuf;
307 }
308
309 void be_link_status_update(struct be_adapter *adapter, bool link_up)
310 {
311 struct net_device *netdev = adapter->netdev;
312
313 /* If link came up or went down */
314 if (adapter->link_up != link_up) {
315 adapter->link_speed = -1;
316 if (link_up) {
317 netif_carrier_on(netdev);
318 printk(KERN_INFO "%s: Link up\n", netdev->name);
319 } else {
320 netif_carrier_off(netdev);
321 printk(KERN_INFO "%s: Link down\n", netdev->name);
322 }
323 adapter->link_up = link_up;
324 }
325 }
326
327 /* Update the EQ delay n BE based on the RX frags consumed / sec */
328 static void be_rx_eqd_update(struct be_adapter *adapter, struct be_rx_obj *rxo)
329 {
330 struct be_eq_obj *rx_eq = &rxo->rx_eq;
331 struct be_rx_stats *stats = &rxo->stats;
332 ulong now = jiffies;
333 u32 eqd;
334
335 if (!rx_eq->enable_aic)
336 return;
337
338 /* Wrapped around */
339 if (time_before(now, stats->rx_fps_jiffies)) {
340 stats->rx_fps_jiffies = now;
341 return;
342 }
343
344 /* Update once a second */
345 if ((now - stats->rx_fps_jiffies) < HZ)
346 return;
347
348 stats->rx_fps = (stats->rx_frags - stats->prev_rx_frags) /
349 ((now - stats->rx_fps_jiffies) / HZ);
350
351 stats->rx_fps_jiffies = now;
352 stats->prev_rx_frags = stats->rx_frags;
353 eqd = stats->rx_fps / 110000;
354 eqd = eqd << 3;
355 if (eqd > rx_eq->max_eqd)
356 eqd = rx_eq->max_eqd;
357 if (eqd < rx_eq->min_eqd)
358 eqd = rx_eq->min_eqd;
359 if (eqd < 10)
360 eqd = 0;
361 if (eqd != rx_eq->cur_eqd)
362 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
363
364 rx_eq->cur_eqd = eqd;
365 }
366
367 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
368 {
369 u64 rate = bytes;
370
371 do_div(rate, ticks / HZ);
372 rate <<= 3; /* bytes/sec -> bits/sec */
373 do_div(rate, 1000000ul); /* MB/Sec */
374
375 return rate;
376 }
377
378 static void be_tx_rate_update(struct be_adapter *adapter)
379 {
380 struct be_tx_stats *stats = tx_stats(adapter);
381 ulong now = jiffies;
382
383 /* Wrapped around? */
384 if (time_before(now, stats->be_tx_jiffies)) {
385 stats->be_tx_jiffies = now;
386 return;
387 }
388
389 /* Update tx rate once in two seconds */
390 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
391 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
392 - stats->be_tx_bytes_prev,
393 now - stats->be_tx_jiffies);
394 stats->be_tx_jiffies = now;
395 stats->be_tx_bytes_prev = stats->be_tx_bytes;
396 }
397 }
398
399 static void be_tx_stats_update(struct be_adapter *adapter,
400 u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
401 {
402 struct be_tx_stats *stats = tx_stats(adapter);
403 stats->be_tx_reqs++;
404 stats->be_tx_wrbs += wrb_cnt;
405 stats->be_tx_bytes += copied;
406 stats->be_tx_pkts += (gso_segs ? gso_segs : 1);
407 if (stopped)
408 stats->be_tx_stops++;
409 }
410
411 /* Determine number of WRB entries needed to xmit data in an skb */
412 static u32 wrb_cnt_for_skb(struct be_adapter *adapter, struct sk_buff *skb,
413 bool *dummy)
414 {
415 int cnt = (skb->len > skb->data_len);
416
417 cnt += skb_shinfo(skb)->nr_frags;
418
419 /* to account for hdr wrb */
420 cnt++;
421 if (lancer_chip(adapter) || !(cnt & 1)) {
422 *dummy = false;
423 } else {
424 /* add a dummy to make it an even num */
425 cnt++;
426 *dummy = true;
427 }
428 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
429 return cnt;
430 }
431
432 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
433 {
434 wrb->frag_pa_hi = upper_32_bits(addr);
435 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
436 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
437 }
438
439 static void wrb_fill_hdr(struct be_adapter *adapter, struct be_eth_hdr_wrb *hdr,
440 struct sk_buff *skb, u32 wrb_cnt, u32 len)
441 {
442 u8 vlan_prio = 0;
443 u16 vlan_tag = 0;
444
445 memset(hdr, 0, sizeof(*hdr));
446
447 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
448
449 if (skb_is_gso(skb)) {
450 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
451 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
452 hdr, skb_shinfo(skb)->gso_size);
453 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
454 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso6, hdr, 1);
455 if (lancer_chip(adapter) && adapter->sli_family ==
456 LANCER_A0_SLI_FAMILY) {
457 AMAP_SET_BITS(struct amap_eth_hdr_wrb, ipcs, hdr, 1);
458 if (is_tcp_pkt(skb))
459 AMAP_SET_BITS(struct amap_eth_hdr_wrb,
460 tcpcs, hdr, 1);
461 else if (is_udp_pkt(skb))
462 AMAP_SET_BITS(struct amap_eth_hdr_wrb,
463 udpcs, hdr, 1);
464 }
465 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
466 if (is_tcp_pkt(skb))
467 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
468 else if (is_udp_pkt(skb))
469 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
470 }
471
472 if (adapter->vlan_grp && vlan_tx_tag_present(skb)) {
473 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
474 vlan_tag = vlan_tx_tag_get(skb);
475 vlan_prio = (vlan_tag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
476 /* If vlan priority provided by OS is NOT in available bmap */
477 if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
478 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
479 adapter->recommended_prio;
480 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag, hdr, vlan_tag);
481 }
482
483 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
484 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
485 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
486 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
487 }
488
489 static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
490 bool unmap_single)
491 {
492 dma_addr_t dma;
493
494 be_dws_le_to_cpu(wrb, sizeof(*wrb));
495
496 dma = (u64)wrb->frag_pa_hi << 32 | (u64)wrb->frag_pa_lo;
497 if (wrb->frag_len) {
498 if (unmap_single)
499 dma_unmap_single(dev, dma, wrb->frag_len,
500 DMA_TO_DEVICE);
501 else
502 dma_unmap_page(dev, dma, wrb->frag_len, DMA_TO_DEVICE);
503 }
504 }
505
506 static int make_tx_wrbs(struct be_adapter *adapter,
507 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
508 {
509 dma_addr_t busaddr;
510 int i, copied = 0;
511 struct device *dev = &adapter->pdev->dev;
512 struct sk_buff *first_skb = skb;
513 struct be_queue_info *txq = &adapter->tx_obj.q;
514 struct be_eth_wrb *wrb;
515 struct be_eth_hdr_wrb *hdr;
516 bool map_single = false;
517 u16 map_head;
518
519 hdr = queue_head_node(txq);
520 queue_head_inc(txq);
521 map_head = txq->head;
522
523 if (skb->len > skb->data_len) {
524 int len = skb_headlen(skb);
525 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
526 if (dma_mapping_error(dev, busaddr))
527 goto dma_err;
528 map_single = true;
529 wrb = queue_head_node(txq);
530 wrb_fill(wrb, busaddr, len);
531 be_dws_cpu_to_le(wrb, sizeof(*wrb));
532 queue_head_inc(txq);
533 copied += len;
534 }
535
536 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
537 struct skb_frag_struct *frag =
538 &skb_shinfo(skb)->frags[i];
539 busaddr = dma_map_page(dev, frag->page, frag->page_offset,
540 frag->size, DMA_TO_DEVICE);
541 if (dma_mapping_error(dev, busaddr))
542 goto dma_err;
543 wrb = queue_head_node(txq);
544 wrb_fill(wrb, busaddr, frag->size);
545 be_dws_cpu_to_le(wrb, sizeof(*wrb));
546 queue_head_inc(txq);
547 copied += frag->size;
548 }
549
550 if (dummy_wrb) {
551 wrb = queue_head_node(txq);
552 wrb_fill(wrb, 0, 0);
553 be_dws_cpu_to_le(wrb, sizeof(*wrb));
554 queue_head_inc(txq);
555 }
556
557 wrb_fill_hdr(adapter, hdr, first_skb, wrb_cnt, copied);
558 be_dws_cpu_to_le(hdr, sizeof(*hdr));
559
560 return copied;
561 dma_err:
562 txq->head = map_head;
563 while (copied) {
564 wrb = queue_head_node(txq);
565 unmap_tx_frag(dev, wrb, map_single);
566 map_single = false;
567 copied -= wrb->frag_len;
568 queue_head_inc(txq);
569 }
570 return 0;
571 }
572
573 static netdev_tx_t be_xmit(struct sk_buff *skb,
574 struct net_device *netdev)
575 {
576 struct be_adapter *adapter = netdev_priv(netdev);
577 struct be_tx_obj *tx_obj = &adapter->tx_obj;
578 struct be_queue_info *txq = &tx_obj->q;
579 u32 wrb_cnt = 0, copied = 0;
580 u32 start = txq->head;
581 bool dummy_wrb, stopped = false;
582
583 wrb_cnt = wrb_cnt_for_skb(adapter, skb, &dummy_wrb);
584
585 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
586 if (copied) {
587 /* record the sent skb in the sent_skb table */
588 BUG_ON(tx_obj->sent_skb_list[start]);
589 tx_obj->sent_skb_list[start] = skb;
590
591 /* Ensure txq has space for the next skb; Else stop the queue
592 * *BEFORE* ringing the tx doorbell, so that we serialze the
593 * tx compls of the current transmit which'll wake up the queue
594 */
595 atomic_add(wrb_cnt, &txq->used);
596 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
597 txq->len) {
598 netif_stop_queue(netdev);
599 stopped = true;
600 }
601
602 be_txq_notify(adapter, txq->id, wrb_cnt);
603
604 be_tx_stats_update(adapter, wrb_cnt, copied,
605 skb_shinfo(skb)->gso_segs, stopped);
606 } else {
607 txq->head = start;
608 dev_kfree_skb_any(skb);
609 }
610 return NETDEV_TX_OK;
611 }
612
613 static int be_change_mtu(struct net_device *netdev, int new_mtu)
614 {
615 struct be_adapter *adapter = netdev_priv(netdev);
616 if (new_mtu < BE_MIN_MTU ||
617 new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
618 (ETH_HLEN + ETH_FCS_LEN))) {
619 dev_info(&adapter->pdev->dev,
620 "MTU must be between %d and %d bytes\n",
621 BE_MIN_MTU,
622 (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
623 return -EINVAL;
624 }
625 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
626 netdev->mtu, new_mtu);
627 netdev->mtu = new_mtu;
628 return 0;
629 }
630
631 /*
632 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
633 * If the user configures more, place BE in vlan promiscuous mode.
634 */
635 static int be_vid_config(struct be_adapter *adapter, bool vf, u32 vf_num)
636 {
637 u16 vtag[BE_NUM_VLANS_SUPPORTED];
638 u16 ntags = 0, i;
639 int status = 0;
640 u32 if_handle;
641
642 if (vf) {
643 if_handle = adapter->vf_cfg[vf_num].vf_if_handle;
644 vtag[0] = cpu_to_le16(adapter->vf_cfg[vf_num].vf_vlan_tag);
645 status = be_cmd_vlan_config(adapter, if_handle, vtag, 1, 1, 0);
646 }
647
648 if (adapter->vlans_added <= adapter->max_vlans) {
649 /* Construct VLAN Table to give to HW */
650 for (i = 0; i < VLAN_N_VID; i++) {
651 if (adapter->vlan_tag[i]) {
652 vtag[ntags] = cpu_to_le16(i);
653 ntags++;
654 }
655 }
656 status = be_cmd_vlan_config(adapter, adapter->if_handle,
657 vtag, ntags, 1, 0);
658 } else {
659 status = be_cmd_vlan_config(adapter, adapter->if_handle,
660 NULL, 0, 1, 1);
661 }
662
663 return status;
664 }
665
666 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
667 {
668 struct be_adapter *adapter = netdev_priv(netdev);
669
670 adapter->vlan_grp = grp;
671 }
672
673 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
674 {
675 struct be_adapter *adapter = netdev_priv(netdev);
676
677 adapter->vlans_added++;
678 if (!be_physfn(adapter))
679 return;
680
681 adapter->vlan_tag[vid] = 1;
682 if (adapter->vlans_added <= (adapter->max_vlans + 1))
683 be_vid_config(adapter, false, 0);
684 }
685
686 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
687 {
688 struct be_adapter *adapter = netdev_priv(netdev);
689
690 adapter->vlans_added--;
691 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
692
693 if (!be_physfn(adapter))
694 return;
695
696 adapter->vlan_tag[vid] = 0;
697 if (adapter->vlans_added <= adapter->max_vlans)
698 be_vid_config(adapter, false, 0);
699 }
700
701 static void be_set_multicast_list(struct net_device *netdev)
702 {
703 struct be_adapter *adapter = netdev_priv(netdev);
704
705 if (netdev->flags & IFF_PROMISC) {
706 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
707 adapter->promiscuous = true;
708 goto done;
709 }
710
711 /* BE was previously in promiscuous mode; disable it */
712 if (adapter->promiscuous) {
713 adapter->promiscuous = false;
714 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
715 }
716
717 /* Enable multicast promisc if num configured exceeds what we support */
718 if (netdev->flags & IFF_ALLMULTI ||
719 netdev_mc_count(netdev) > BE_MAX_MC) {
720 be_cmd_multicast_set(adapter, adapter->if_handle, NULL,
721 &adapter->mc_cmd_mem);
722 goto done;
723 }
724
725 be_cmd_multicast_set(adapter, adapter->if_handle, netdev,
726 &adapter->mc_cmd_mem);
727 done:
728 return;
729 }
730
731 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
732 {
733 struct be_adapter *adapter = netdev_priv(netdev);
734 int status;
735
736 if (!adapter->sriov_enabled)
737 return -EPERM;
738
739 if (!is_valid_ether_addr(mac) || (vf >= num_vfs))
740 return -EINVAL;
741
742 if (adapter->vf_cfg[vf].vf_pmac_id != BE_INVALID_PMAC_ID)
743 status = be_cmd_pmac_del(adapter,
744 adapter->vf_cfg[vf].vf_if_handle,
745 adapter->vf_cfg[vf].vf_pmac_id, vf + 1);
746
747 status = be_cmd_pmac_add(adapter, mac,
748 adapter->vf_cfg[vf].vf_if_handle,
749 &adapter->vf_cfg[vf].vf_pmac_id, vf + 1);
750
751 if (status)
752 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed\n",
753 mac, vf);
754 else
755 memcpy(adapter->vf_cfg[vf].vf_mac_addr, mac, ETH_ALEN);
756
757 return status;
758 }
759
760 static int be_get_vf_config(struct net_device *netdev, int vf,
761 struct ifla_vf_info *vi)
762 {
763 struct be_adapter *adapter = netdev_priv(netdev);
764
765 if (!adapter->sriov_enabled)
766 return -EPERM;
767
768 if (vf >= num_vfs)
769 return -EINVAL;
770
771 vi->vf = vf;
772 vi->tx_rate = adapter->vf_cfg[vf].vf_tx_rate;
773 vi->vlan = adapter->vf_cfg[vf].vf_vlan_tag;
774 vi->qos = 0;
775 memcpy(&vi->mac, adapter->vf_cfg[vf].vf_mac_addr, ETH_ALEN);
776
777 return 0;
778 }
779
780 static int be_set_vf_vlan(struct net_device *netdev,
781 int vf, u16 vlan, u8 qos)
782 {
783 struct be_adapter *adapter = netdev_priv(netdev);
784 int status = 0;
785
786 if (!adapter->sriov_enabled)
787 return -EPERM;
788
789 if ((vf >= num_vfs) || (vlan > 4095))
790 return -EINVAL;
791
792 if (vlan) {
793 adapter->vf_cfg[vf].vf_vlan_tag = vlan;
794 adapter->vlans_added++;
795 } else {
796 adapter->vf_cfg[vf].vf_vlan_tag = 0;
797 adapter->vlans_added--;
798 }
799
800 status = be_vid_config(adapter, true, vf);
801
802 if (status)
803 dev_info(&adapter->pdev->dev,
804 "VLAN %d config on VF %d failed\n", vlan, vf);
805 return status;
806 }
807
808 static int be_set_vf_tx_rate(struct net_device *netdev,
809 int vf, int rate)
810 {
811 struct be_adapter *adapter = netdev_priv(netdev);
812 int status = 0;
813
814 if (!adapter->sriov_enabled)
815 return -EPERM;
816
817 if ((vf >= num_vfs) || (rate < 0))
818 return -EINVAL;
819
820 if (rate > 10000)
821 rate = 10000;
822
823 adapter->vf_cfg[vf].vf_tx_rate = rate;
824 status = be_cmd_set_qos(adapter, rate / 10, vf + 1);
825
826 if (status)
827 dev_info(&adapter->pdev->dev,
828 "tx rate %d on VF %d failed\n", rate, vf);
829 return status;
830 }
831
832 static void be_rx_rate_update(struct be_rx_obj *rxo)
833 {
834 struct be_rx_stats *stats = &rxo->stats;
835 ulong now = jiffies;
836
837 /* Wrapped around */
838 if (time_before(now, stats->rx_jiffies)) {
839 stats->rx_jiffies = now;
840 return;
841 }
842
843 /* Update the rate once in two seconds */
844 if ((now - stats->rx_jiffies) < 2 * HZ)
845 return;
846
847 stats->rx_rate = be_calc_rate(stats->rx_bytes - stats->rx_bytes_prev,
848 now - stats->rx_jiffies);
849 stats->rx_jiffies = now;
850 stats->rx_bytes_prev = stats->rx_bytes;
851 }
852
853 static void be_rx_stats_update(struct be_rx_obj *rxo,
854 struct be_rx_compl_info *rxcp)
855 {
856 struct be_rx_stats *stats = &rxo->stats;
857
858 stats->rx_compl++;
859 stats->rx_frags += rxcp->num_rcvd;
860 stats->rx_bytes += rxcp->pkt_size;
861 stats->rx_pkts++;
862 if (rxcp->pkt_type == BE_MULTICAST_PACKET)
863 stats->rx_mcast_pkts++;
864 if (rxcp->err)
865 stats->rxcp_err++;
866 }
867
868 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
869 {
870 /* L4 checksum is not reliable for non TCP/UDP packets.
871 * Also ignore ipcksm for ipv6 pkts */
872 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
873 (rxcp->ip_csum || rxcp->ipv6);
874 }
875
876 static struct be_rx_page_info *
877 get_rx_page_info(struct be_adapter *adapter,
878 struct be_rx_obj *rxo,
879 u16 frag_idx)
880 {
881 struct be_rx_page_info *rx_page_info;
882 struct be_queue_info *rxq = &rxo->q;
883
884 rx_page_info = &rxo->page_info_tbl[frag_idx];
885 BUG_ON(!rx_page_info->page);
886
887 if (rx_page_info->last_page_user) {
888 dma_unmap_page(&adapter->pdev->dev,
889 dma_unmap_addr(rx_page_info, bus),
890 adapter->big_page_size, DMA_FROM_DEVICE);
891 rx_page_info->last_page_user = false;
892 }
893
894 atomic_dec(&rxq->used);
895 return rx_page_info;
896 }
897
898 /* Throwaway the data in the Rx completion */
899 static void be_rx_compl_discard(struct be_adapter *adapter,
900 struct be_rx_obj *rxo,
901 struct be_rx_compl_info *rxcp)
902 {
903 struct be_queue_info *rxq = &rxo->q;
904 struct be_rx_page_info *page_info;
905 u16 i, num_rcvd = rxcp->num_rcvd;
906
907 for (i = 0; i < num_rcvd; i++) {
908 page_info = get_rx_page_info(adapter, rxo, rxcp->rxq_idx);
909 put_page(page_info->page);
910 memset(page_info, 0, sizeof(*page_info));
911 index_inc(&rxcp->rxq_idx, rxq->len);
912 }
913 }
914
915 /*
916 * skb_fill_rx_data forms a complete skb for an ether frame
917 * indicated by rxcp.
918 */
919 static void skb_fill_rx_data(struct be_adapter *adapter, struct be_rx_obj *rxo,
920 struct sk_buff *skb, struct be_rx_compl_info *rxcp)
921 {
922 struct be_queue_info *rxq = &rxo->q;
923 struct be_rx_page_info *page_info;
924 u16 i, j;
925 u16 hdr_len, curr_frag_len, remaining;
926 u8 *start;
927
928 page_info = get_rx_page_info(adapter, rxo, rxcp->rxq_idx);
929 start = page_address(page_info->page) + page_info->page_offset;
930 prefetch(start);
931
932 /* Copy data in the first descriptor of this completion */
933 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
934
935 /* Copy the header portion into skb_data */
936 hdr_len = min(BE_HDR_LEN, curr_frag_len);
937 memcpy(skb->data, start, hdr_len);
938 skb->len = curr_frag_len;
939 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
940 /* Complete packet has now been moved to data */
941 put_page(page_info->page);
942 skb->data_len = 0;
943 skb->tail += curr_frag_len;
944 } else {
945 skb_shinfo(skb)->nr_frags = 1;
946 skb_shinfo(skb)->frags[0].page = page_info->page;
947 skb_shinfo(skb)->frags[0].page_offset =
948 page_info->page_offset + hdr_len;
949 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
950 skb->data_len = curr_frag_len - hdr_len;
951 skb->tail += hdr_len;
952 }
953 page_info->page = NULL;
954
955 if (rxcp->pkt_size <= rx_frag_size) {
956 BUG_ON(rxcp->num_rcvd != 1);
957 return;
958 }
959
960 /* More frags present for this completion */
961 index_inc(&rxcp->rxq_idx, rxq->len);
962 remaining = rxcp->pkt_size - curr_frag_len;
963 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
964 page_info = get_rx_page_info(adapter, rxo, rxcp->rxq_idx);
965 curr_frag_len = min(remaining, rx_frag_size);
966
967 /* Coalesce all frags from the same physical page in one slot */
968 if (page_info->page_offset == 0) {
969 /* Fresh page */
970 j++;
971 skb_shinfo(skb)->frags[j].page = page_info->page;
972 skb_shinfo(skb)->frags[j].page_offset =
973 page_info->page_offset;
974 skb_shinfo(skb)->frags[j].size = 0;
975 skb_shinfo(skb)->nr_frags++;
976 } else {
977 put_page(page_info->page);
978 }
979
980 skb_shinfo(skb)->frags[j].size += curr_frag_len;
981 skb->len += curr_frag_len;
982 skb->data_len += curr_frag_len;
983
984 remaining -= curr_frag_len;
985 index_inc(&rxcp->rxq_idx, rxq->len);
986 page_info->page = NULL;
987 }
988 BUG_ON(j > MAX_SKB_FRAGS);
989 }
990
991 /* Process the RX completion indicated by rxcp when GRO is disabled */
992 static void be_rx_compl_process(struct be_adapter *adapter,
993 struct be_rx_obj *rxo,
994 struct be_rx_compl_info *rxcp)
995 {
996 struct sk_buff *skb;
997
998 skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
999 if (unlikely(!skb)) {
1000 if (net_ratelimit())
1001 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
1002 be_rx_compl_discard(adapter, rxo, rxcp);
1003 return;
1004 }
1005
1006 skb_fill_rx_data(adapter, rxo, skb, rxcp);
1007
1008 if (likely(adapter->rx_csum && csum_passed(rxcp)))
1009 skb->ip_summed = CHECKSUM_UNNECESSARY;
1010 else
1011 skb_checksum_none_assert(skb);
1012
1013 skb->truesize = skb->len + sizeof(struct sk_buff);
1014 skb->protocol = eth_type_trans(skb, adapter->netdev);
1015
1016 if (unlikely(rxcp->vlanf)) {
1017 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
1018 kfree_skb(skb);
1019 return;
1020 }
1021 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, rxcp->vid);
1022 } else {
1023 netif_receive_skb(skb);
1024 }
1025 }
1026
1027 /* Process the RX completion indicated by rxcp when GRO is enabled */
1028 static void be_rx_compl_process_gro(struct be_adapter *adapter,
1029 struct be_rx_obj *rxo,
1030 struct be_rx_compl_info *rxcp)
1031 {
1032 struct be_rx_page_info *page_info;
1033 struct sk_buff *skb = NULL;
1034 struct be_queue_info *rxq = &rxo->q;
1035 struct be_eq_obj *eq_obj = &rxo->rx_eq;
1036 u16 remaining, curr_frag_len;
1037 u16 i, j;
1038
1039 skb = napi_get_frags(&eq_obj->napi);
1040 if (!skb) {
1041 be_rx_compl_discard(adapter, rxo, rxcp);
1042 return;
1043 }
1044
1045 remaining = rxcp->pkt_size;
1046 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
1047 page_info = get_rx_page_info(adapter, rxo, rxcp->rxq_idx);
1048
1049 curr_frag_len = min(remaining, rx_frag_size);
1050
1051 /* Coalesce all frags from the same physical page in one slot */
1052 if (i == 0 || page_info->page_offset == 0) {
1053 /* First frag or Fresh page */
1054 j++;
1055 skb_shinfo(skb)->frags[j].page = page_info->page;
1056 skb_shinfo(skb)->frags[j].page_offset =
1057 page_info->page_offset;
1058 skb_shinfo(skb)->frags[j].size = 0;
1059 } else {
1060 put_page(page_info->page);
1061 }
1062 skb_shinfo(skb)->frags[j].size += curr_frag_len;
1063
1064 remaining -= curr_frag_len;
1065 index_inc(&rxcp->rxq_idx, rxq->len);
1066 memset(page_info, 0, sizeof(*page_info));
1067 }
1068 BUG_ON(j > MAX_SKB_FRAGS);
1069
1070 skb_shinfo(skb)->nr_frags = j + 1;
1071 skb->len = rxcp->pkt_size;
1072 skb->data_len = rxcp->pkt_size;
1073 skb->truesize += rxcp->pkt_size;
1074 skb->ip_summed = CHECKSUM_UNNECESSARY;
1075
1076 if (likely(!rxcp->vlanf))
1077 napi_gro_frags(&eq_obj->napi);
1078 else
1079 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, rxcp->vid);
1080 }
1081
1082 static void be_parse_rx_compl_v1(struct be_adapter *adapter,
1083 struct be_eth_rx_compl *compl,
1084 struct be_rx_compl_info *rxcp)
1085 {
1086 rxcp->pkt_size =
1087 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, pktsize, compl);
1088 rxcp->vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, vtp, compl);
1089 rxcp->err = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, err, compl);
1090 rxcp->tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, tcpf, compl);
1091 rxcp->udpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, udpf, compl);
1092 rxcp->ip_csum =
1093 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, ipcksm, compl);
1094 rxcp->l4_csum =
1095 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, l4_cksm, compl);
1096 rxcp->ipv6 =
1097 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, ip_version, compl);
1098 rxcp->rxq_idx =
1099 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, fragndx, compl);
1100 rxcp->num_rcvd =
1101 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, numfrags, compl);
1102 rxcp->pkt_type =
1103 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, cast_enc, compl);
1104 rxcp->vtm = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, vtm, compl);
1105 rxcp->vid = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, vlan_tag, compl);
1106 }
1107
1108 static void be_parse_rx_compl_v0(struct be_adapter *adapter,
1109 struct be_eth_rx_compl *compl,
1110 struct be_rx_compl_info *rxcp)
1111 {
1112 rxcp->pkt_size =
1113 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, pktsize, compl);
1114 rxcp->vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, vtp, compl);
1115 rxcp->err = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, err, compl);
1116 rxcp->tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, tcpf, compl);
1117 rxcp->udpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, udpf, compl);
1118 rxcp->ip_csum =
1119 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, ipcksm, compl);
1120 rxcp->l4_csum =
1121 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, l4_cksm, compl);
1122 rxcp->ipv6 =
1123 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, ip_version, compl);
1124 rxcp->rxq_idx =
1125 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, fragndx, compl);
1126 rxcp->num_rcvd =
1127 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, numfrags, compl);
1128 rxcp->pkt_type =
1129 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, cast_enc, compl);
1130 rxcp->vtm = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, vtm, compl);
1131 rxcp->vid = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, vlan_tag, compl);
1132 }
1133
1134 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
1135 {
1136 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
1137 struct be_rx_compl_info *rxcp = &rxo->rxcp;
1138 struct be_adapter *adapter = rxo->adapter;
1139
1140 /* For checking the valid bit it is Ok to use either definition as the
1141 * valid bit is at the same position in both v0 and v1 Rx compl */
1142 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
1143 return NULL;
1144
1145 rmb();
1146 be_dws_le_to_cpu(compl, sizeof(*compl));
1147
1148 if (adapter->be3_native)
1149 be_parse_rx_compl_v1(adapter, compl, rxcp);
1150 else
1151 be_parse_rx_compl_v0(adapter, compl, rxcp);
1152
1153 /* vlanf could be wrongly set in some cards. ignore if vtm is not set */
1154 if ((adapter->function_mode & 0x400) && !rxcp->vtm)
1155 rxcp->vlanf = 0;
1156
1157 if (!lancer_chip(adapter))
1158 rxcp->vid = swab16(rxcp->vid);
1159
1160 if ((adapter->pvid == rxcp->vid) && !adapter->vlan_tag[rxcp->vid])
1161 rxcp->vlanf = 0;
1162
1163 /* As the compl has been parsed, reset it; we wont touch it again */
1164 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
1165
1166 queue_tail_inc(&rxo->cq);
1167 return rxcp;
1168 }
1169
1170 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
1171 {
1172 u32 order = get_order(size);
1173
1174 if (order > 0)
1175 gfp |= __GFP_COMP;
1176 return alloc_pages(gfp, order);
1177 }
1178
1179 /*
1180 * Allocate a page, split it to fragments of size rx_frag_size and post as
1181 * receive buffers to BE
1182 */
1183 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp)
1184 {
1185 struct be_adapter *adapter = rxo->adapter;
1186 struct be_rx_page_info *page_info_tbl = rxo->page_info_tbl;
1187 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
1188 struct be_queue_info *rxq = &rxo->q;
1189 struct page *pagep = NULL;
1190 struct be_eth_rx_d *rxd;
1191 u64 page_dmaaddr = 0, frag_dmaaddr;
1192 u32 posted, page_offset = 0;
1193
1194 page_info = &rxo->page_info_tbl[rxq->head];
1195 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
1196 if (!pagep) {
1197 pagep = be_alloc_pages(adapter->big_page_size, gfp);
1198 if (unlikely(!pagep)) {
1199 rxo->stats.rx_post_fail++;
1200 break;
1201 }
1202 page_dmaaddr = dma_map_page(&adapter->pdev->dev, pagep,
1203 0, adapter->big_page_size,
1204 DMA_FROM_DEVICE);
1205 page_info->page_offset = 0;
1206 } else {
1207 get_page(pagep);
1208 page_info->page_offset = page_offset + rx_frag_size;
1209 }
1210 page_offset = page_info->page_offset;
1211 page_info->page = pagep;
1212 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
1213 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
1214
1215 rxd = queue_head_node(rxq);
1216 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1217 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1218
1219 /* Any space left in the current big page for another frag? */
1220 if ((page_offset + rx_frag_size + rx_frag_size) >
1221 adapter->big_page_size) {
1222 pagep = NULL;
1223 page_info->last_page_user = true;
1224 }
1225
1226 prev_page_info = page_info;
1227 queue_head_inc(rxq);
1228 page_info = &page_info_tbl[rxq->head];
1229 }
1230 if (pagep)
1231 prev_page_info->last_page_user = true;
1232
1233 if (posted) {
1234 atomic_add(posted, &rxq->used);
1235 be_rxq_notify(adapter, rxq->id, posted);
1236 } else if (atomic_read(&rxq->used) == 0) {
1237 /* Let be_worker replenish when memory is available */
1238 rxo->rx_post_starved = true;
1239 }
1240 }
1241
1242 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1243 {
1244 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1245
1246 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1247 return NULL;
1248
1249 rmb();
1250 be_dws_le_to_cpu(txcp, sizeof(*txcp));
1251
1252 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1253
1254 queue_tail_inc(tx_cq);
1255 return txcp;
1256 }
1257
1258 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1259 {
1260 struct be_queue_info *txq = &adapter->tx_obj.q;
1261 struct be_eth_wrb *wrb;
1262 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1263 struct sk_buff *sent_skb;
1264 u16 cur_index, num_wrbs = 1; /* account for hdr wrb */
1265 bool unmap_skb_hdr = true;
1266
1267 sent_skb = sent_skbs[txq->tail];
1268 BUG_ON(!sent_skb);
1269 sent_skbs[txq->tail] = NULL;
1270
1271 /* skip header wrb */
1272 queue_tail_inc(txq);
1273
1274 do {
1275 cur_index = txq->tail;
1276 wrb = queue_tail_node(txq);
1277 unmap_tx_frag(&adapter->pdev->dev, wrb,
1278 (unmap_skb_hdr && skb_headlen(sent_skb)));
1279 unmap_skb_hdr = false;
1280
1281 num_wrbs++;
1282 queue_tail_inc(txq);
1283 } while (cur_index != last_index);
1284
1285 atomic_sub(num_wrbs, &txq->used);
1286
1287 kfree_skb(sent_skb);
1288 }
1289
1290 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1291 {
1292 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1293
1294 if (!eqe->evt)
1295 return NULL;
1296
1297 rmb();
1298 eqe->evt = le32_to_cpu(eqe->evt);
1299 queue_tail_inc(&eq_obj->q);
1300 return eqe;
1301 }
1302
1303 static int event_handle(struct be_adapter *adapter,
1304 struct be_eq_obj *eq_obj)
1305 {
1306 struct be_eq_entry *eqe;
1307 u16 num = 0;
1308
1309 while ((eqe = event_get(eq_obj)) != NULL) {
1310 eqe->evt = 0;
1311 num++;
1312 }
1313
1314 /* Deal with any spurious interrupts that come
1315 * without events
1316 */
1317 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1318 if (num)
1319 napi_schedule(&eq_obj->napi);
1320
1321 return num;
1322 }
1323
1324 /* Just read and notify events without processing them.
1325 * Used at the time of destroying event queues */
1326 static void be_eq_clean(struct be_adapter *adapter,
1327 struct be_eq_obj *eq_obj)
1328 {
1329 struct be_eq_entry *eqe;
1330 u16 num = 0;
1331
1332 while ((eqe = event_get(eq_obj)) != NULL) {
1333 eqe->evt = 0;
1334 num++;
1335 }
1336
1337 if (num)
1338 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1339 }
1340
1341 static void be_rx_q_clean(struct be_adapter *adapter, struct be_rx_obj *rxo)
1342 {
1343 struct be_rx_page_info *page_info;
1344 struct be_queue_info *rxq = &rxo->q;
1345 struct be_queue_info *rx_cq = &rxo->cq;
1346 struct be_rx_compl_info *rxcp;
1347 u16 tail;
1348
1349 /* First cleanup pending rx completions */
1350 while ((rxcp = be_rx_compl_get(rxo)) != NULL) {
1351 be_rx_compl_discard(adapter, rxo, rxcp);
1352 be_cq_notify(adapter, rx_cq->id, false, 1);
1353 }
1354
1355 /* Then free posted rx buffer that were not used */
1356 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1357 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1358 page_info = get_rx_page_info(adapter, rxo, tail);
1359 put_page(page_info->page);
1360 memset(page_info, 0, sizeof(*page_info));
1361 }
1362 BUG_ON(atomic_read(&rxq->used));
1363 }
1364
1365 static void be_tx_compl_clean(struct be_adapter *adapter)
1366 {
1367 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1368 struct be_queue_info *txq = &adapter->tx_obj.q;
1369 struct be_eth_tx_compl *txcp;
1370 u16 end_idx, cmpl = 0, timeo = 0;
1371 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1372 struct sk_buff *sent_skb;
1373 bool dummy_wrb;
1374
1375 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1376 do {
1377 while ((txcp = be_tx_compl_get(tx_cq))) {
1378 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1379 wrb_index, txcp);
1380 be_tx_compl_process(adapter, end_idx);
1381 cmpl++;
1382 }
1383 if (cmpl) {
1384 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1385 cmpl = 0;
1386 }
1387
1388 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1389 break;
1390
1391 mdelay(1);
1392 } while (true);
1393
1394 if (atomic_read(&txq->used))
1395 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1396 atomic_read(&txq->used));
1397
1398 /* free posted tx for which compls will never arrive */
1399 while (atomic_read(&txq->used)) {
1400 sent_skb = sent_skbs[txq->tail];
1401 end_idx = txq->tail;
1402 index_adv(&end_idx,
1403 wrb_cnt_for_skb(adapter, sent_skb, &dummy_wrb) - 1,
1404 txq->len);
1405 be_tx_compl_process(adapter, end_idx);
1406 }
1407 }
1408
1409 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1410 {
1411 struct be_queue_info *q;
1412
1413 q = &adapter->mcc_obj.q;
1414 if (q->created)
1415 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1416 be_queue_free(adapter, q);
1417
1418 q = &adapter->mcc_obj.cq;
1419 if (q->created)
1420 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1421 be_queue_free(adapter, q);
1422 }
1423
1424 /* Must be called only after TX qs are created as MCC shares TX EQ */
1425 static int be_mcc_queues_create(struct be_adapter *adapter)
1426 {
1427 struct be_queue_info *q, *cq;
1428
1429 /* Alloc MCC compl queue */
1430 cq = &adapter->mcc_obj.cq;
1431 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1432 sizeof(struct be_mcc_compl)))
1433 goto err;
1434
1435 /* Ask BE to create MCC compl queue; share TX's eq */
1436 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1437 goto mcc_cq_free;
1438
1439 /* Alloc MCC queue */
1440 q = &adapter->mcc_obj.q;
1441 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1442 goto mcc_cq_destroy;
1443
1444 /* Ask BE to create MCC queue */
1445 if (be_cmd_mccq_create(adapter, q, cq))
1446 goto mcc_q_free;
1447
1448 return 0;
1449
1450 mcc_q_free:
1451 be_queue_free(adapter, q);
1452 mcc_cq_destroy:
1453 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1454 mcc_cq_free:
1455 be_queue_free(adapter, cq);
1456 err:
1457 return -1;
1458 }
1459
1460 static void be_tx_queues_destroy(struct be_adapter *adapter)
1461 {
1462 struct be_queue_info *q;
1463
1464 q = &adapter->tx_obj.q;
1465 if (q->created)
1466 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1467 be_queue_free(adapter, q);
1468
1469 q = &adapter->tx_obj.cq;
1470 if (q->created)
1471 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1472 be_queue_free(adapter, q);
1473
1474 /* Clear any residual events */
1475 be_eq_clean(adapter, &adapter->tx_eq);
1476
1477 q = &adapter->tx_eq.q;
1478 if (q->created)
1479 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1480 be_queue_free(adapter, q);
1481 }
1482
1483 static int be_tx_queues_create(struct be_adapter *adapter)
1484 {
1485 struct be_queue_info *eq, *q, *cq;
1486
1487 adapter->tx_eq.max_eqd = 0;
1488 adapter->tx_eq.min_eqd = 0;
1489 adapter->tx_eq.cur_eqd = 96;
1490 adapter->tx_eq.enable_aic = false;
1491 /* Alloc Tx Event queue */
1492 eq = &adapter->tx_eq.q;
1493 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1494 return -1;
1495
1496 /* Ask BE to create Tx Event queue */
1497 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1498 goto tx_eq_free;
1499
1500 adapter->tx_eq.eq_idx = adapter->eq_next_idx++;
1501
1502
1503 /* Alloc TX eth compl queue */
1504 cq = &adapter->tx_obj.cq;
1505 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1506 sizeof(struct be_eth_tx_compl)))
1507 goto tx_eq_destroy;
1508
1509 /* Ask BE to create Tx eth compl queue */
1510 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1511 goto tx_cq_free;
1512
1513 /* Alloc TX eth queue */
1514 q = &adapter->tx_obj.q;
1515 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1516 goto tx_cq_destroy;
1517
1518 /* Ask BE to create Tx eth queue */
1519 if (be_cmd_txq_create(adapter, q, cq))
1520 goto tx_q_free;
1521 return 0;
1522
1523 tx_q_free:
1524 be_queue_free(adapter, q);
1525 tx_cq_destroy:
1526 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1527 tx_cq_free:
1528 be_queue_free(adapter, cq);
1529 tx_eq_destroy:
1530 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1531 tx_eq_free:
1532 be_queue_free(adapter, eq);
1533 return -1;
1534 }
1535
1536 static void be_rx_queues_destroy(struct be_adapter *adapter)
1537 {
1538 struct be_queue_info *q;
1539 struct be_rx_obj *rxo;
1540 int i;
1541
1542 for_all_rx_queues(adapter, rxo, i) {
1543 q = &rxo->q;
1544 if (q->created) {
1545 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1546 /* After the rxq is invalidated, wait for a grace time
1547 * of 1ms for all dma to end and the flush compl to
1548 * arrive
1549 */
1550 mdelay(1);
1551 be_rx_q_clean(adapter, rxo);
1552 }
1553 be_queue_free(adapter, q);
1554
1555 q = &rxo->cq;
1556 if (q->created)
1557 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1558 be_queue_free(adapter, q);
1559
1560 /* Clear any residual events */
1561 q = &rxo->rx_eq.q;
1562 if (q->created) {
1563 be_eq_clean(adapter, &rxo->rx_eq);
1564 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1565 }
1566 be_queue_free(adapter, q);
1567 }
1568 }
1569
1570 static int be_rx_queues_create(struct be_adapter *adapter)
1571 {
1572 struct be_queue_info *eq, *q, *cq;
1573 struct be_rx_obj *rxo;
1574 int rc, i;
1575
1576 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1577 for_all_rx_queues(adapter, rxo, i) {
1578 rxo->adapter = adapter;
1579 rxo->rx_eq.max_eqd = BE_MAX_EQD;
1580 rxo->rx_eq.enable_aic = true;
1581
1582 /* EQ */
1583 eq = &rxo->rx_eq.q;
1584 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1585 sizeof(struct be_eq_entry));
1586 if (rc)
1587 goto err;
1588
1589 rc = be_cmd_eq_create(adapter, eq, rxo->rx_eq.cur_eqd);
1590 if (rc)
1591 goto err;
1592
1593 rxo->rx_eq.eq_idx = adapter->eq_next_idx++;
1594
1595 /* CQ */
1596 cq = &rxo->cq;
1597 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1598 sizeof(struct be_eth_rx_compl));
1599 if (rc)
1600 goto err;
1601
1602 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1603 if (rc)
1604 goto err;
1605 /* Rx Q */
1606 q = &rxo->q;
1607 rc = be_queue_alloc(adapter, q, RX_Q_LEN,
1608 sizeof(struct be_eth_rx_d));
1609 if (rc)
1610 goto err;
1611
1612 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1613 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle,
1614 (i > 0) ? 1 : 0/* rss enable */, &rxo->rss_id);
1615 if (rc)
1616 goto err;
1617 }
1618
1619 if (be_multi_rxq(adapter)) {
1620 u8 rsstable[MAX_RSS_QS];
1621
1622 for_all_rss_queues(adapter, rxo, i)
1623 rsstable[i] = rxo->rss_id;
1624
1625 rc = be_cmd_rss_config(adapter, rsstable,
1626 adapter->num_rx_qs - 1);
1627 if (rc)
1628 goto err;
1629 }
1630
1631 return 0;
1632 err:
1633 be_rx_queues_destroy(adapter);
1634 return -1;
1635 }
1636
1637 static bool event_peek(struct be_eq_obj *eq_obj)
1638 {
1639 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1640 if (!eqe->evt)
1641 return false;
1642 else
1643 return true;
1644 }
1645
1646 static irqreturn_t be_intx(int irq, void *dev)
1647 {
1648 struct be_adapter *adapter = dev;
1649 struct be_rx_obj *rxo;
1650 int isr, i, tx = 0 , rx = 0;
1651
1652 if (lancer_chip(adapter)) {
1653 if (event_peek(&adapter->tx_eq))
1654 tx = event_handle(adapter, &adapter->tx_eq);
1655 for_all_rx_queues(adapter, rxo, i) {
1656 if (event_peek(&rxo->rx_eq))
1657 rx |= event_handle(adapter, &rxo->rx_eq);
1658 }
1659
1660 if (!(tx || rx))
1661 return IRQ_NONE;
1662
1663 } else {
1664 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1665 (adapter->tx_eq.q.id / 8) * CEV_ISR_SIZE);
1666 if (!isr)
1667 return IRQ_NONE;
1668
1669 if ((1 << adapter->tx_eq.eq_idx & isr))
1670 event_handle(adapter, &adapter->tx_eq);
1671
1672 for_all_rx_queues(adapter, rxo, i) {
1673 if ((1 << rxo->rx_eq.eq_idx & isr))
1674 event_handle(adapter, &rxo->rx_eq);
1675 }
1676 }
1677
1678 return IRQ_HANDLED;
1679 }
1680
1681 static irqreturn_t be_msix_rx(int irq, void *dev)
1682 {
1683 struct be_rx_obj *rxo = dev;
1684 struct be_adapter *adapter = rxo->adapter;
1685
1686 event_handle(adapter, &rxo->rx_eq);
1687
1688 return IRQ_HANDLED;
1689 }
1690
1691 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1692 {
1693 struct be_adapter *adapter = dev;
1694
1695 event_handle(adapter, &adapter->tx_eq);
1696
1697 return IRQ_HANDLED;
1698 }
1699
1700 static inline bool do_gro(struct be_rx_compl_info *rxcp)
1701 {
1702 return (rxcp->tcpf && !rxcp->err) ? true : false;
1703 }
1704
1705 static int be_poll_rx(struct napi_struct *napi, int budget)
1706 {
1707 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1708 struct be_rx_obj *rxo = container_of(rx_eq, struct be_rx_obj, rx_eq);
1709 struct be_adapter *adapter = rxo->adapter;
1710 struct be_queue_info *rx_cq = &rxo->cq;
1711 struct be_rx_compl_info *rxcp;
1712 u32 work_done;
1713
1714 rxo->stats.rx_polls++;
1715 for (work_done = 0; work_done < budget; work_done++) {
1716 rxcp = be_rx_compl_get(rxo);
1717 if (!rxcp)
1718 break;
1719
1720 /* Ignore flush completions */
1721 if (rxcp->num_rcvd) {
1722 if (do_gro(rxcp))
1723 be_rx_compl_process_gro(adapter, rxo, rxcp);
1724 else
1725 be_rx_compl_process(adapter, rxo, rxcp);
1726 }
1727 be_rx_stats_update(rxo, rxcp);
1728 }
1729
1730 /* Refill the queue */
1731 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM)
1732 be_post_rx_frags(rxo, GFP_ATOMIC);
1733
1734 /* All consumed */
1735 if (work_done < budget) {
1736 napi_complete(napi);
1737 be_cq_notify(adapter, rx_cq->id, true, work_done);
1738 } else {
1739 /* More to be consumed; continue with interrupts disabled */
1740 be_cq_notify(adapter, rx_cq->id, false, work_done);
1741 }
1742 return work_done;
1743 }
1744
1745 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1746 * For TX/MCC we don't honour budget; consume everything
1747 */
1748 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1749 {
1750 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1751 struct be_adapter *adapter =
1752 container_of(tx_eq, struct be_adapter, tx_eq);
1753 struct be_queue_info *txq = &adapter->tx_obj.q;
1754 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1755 struct be_eth_tx_compl *txcp;
1756 int tx_compl = 0, mcc_compl, status = 0;
1757 u16 end_idx;
1758
1759 while ((txcp = be_tx_compl_get(tx_cq))) {
1760 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1761 wrb_index, txcp);
1762 be_tx_compl_process(adapter, end_idx);
1763 tx_compl++;
1764 }
1765
1766 mcc_compl = be_process_mcc(adapter, &status);
1767
1768 napi_complete(napi);
1769
1770 if (mcc_compl) {
1771 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1772 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1773 }
1774
1775 if (tx_compl) {
1776 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1777
1778 /* As Tx wrbs have been freed up, wake up netdev queue if
1779 * it was stopped due to lack of tx wrbs.
1780 */
1781 if (netif_queue_stopped(adapter->netdev) &&
1782 atomic_read(&txq->used) < txq->len / 2) {
1783 netif_wake_queue(adapter->netdev);
1784 }
1785
1786 tx_stats(adapter)->be_tx_events++;
1787 tx_stats(adapter)->be_tx_compl += tx_compl;
1788 }
1789
1790 return 1;
1791 }
1792
1793 void be_detect_dump_ue(struct be_adapter *adapter)
1794 {
1795 u32 ue_status_lo, ue_status_hi, ue_status_lo_mask, ue_status_hi_mask;
1796 u32 i;
1797
1798 pci_read_config_dword(adapter->pdev,
1799 PCICFG_UE_STATUS_LOW, &ue_status_lo);
1800 pci_read_config_dword(adapter->pdev,
1801 PCICFG_UE_STATUS_HIGH, &ue_status_hi);
1802 pci_read_config_dword(adapter->pdev,
1803 PCICFG_UE_STATUS_LOW_MASK, &ue_status_lo_mask);
1804 pci_read_config_dword(adapter->pdev,
1805 PCICFG_UE_STATUS_HI_MASK, &ue_status_hi_mask);
1806
1807 ue_status_lo = (ue_status_lo & (~ue_status_lo_mask));
1808 ue_status_hi = (ue_status_hi & (~ue_status_hi_mask));
1809
1810 if (ue_status_lo || ue_status_hi) {
1811 adapter->ue_detected = true;
1812 adapter->eeh_err = true;
1813 dev_err(&adapter->pdev->dev, "UE Detected!!\n");
1814 }
1815
1816 if (ue_status_lo) {
1817 for (i = 0; ue_status_lo; ue_status_lo >>= 1, i++) {
1818 if (ue_status_lo & 1)
1819 dev_err(&adapter->pdev->dev,
1820 "UE: %s bit set\n", ue_status_low_desc[i]);
1821 }
1822 }
1823 if (ue_status_hi) {
1824 for (i = 0; ue_status_hi; ue_status_hi >>= 1, i++) {
1825 if (ue_status_hi & 1)
1826 dev_err(&adapter->pdev->dev,
1827 "UE: %s bit set\n", ue_status_hi_desc[i]);
1828 }
1829 }
1830
1831 }
1832
1833 static void be_worker(struct work_struct *work)
1834 {
1835 struct be_adapter *adapter =
1836 container_of(work, struct be_adapter, work.work);
1837 struct be_rx_obj *rxo;
1838 int i;
1839
1840 /* when interrupts are not yet enabled, just reap any pending
1841 * mcc completions */
1842 if (!netif_running(adapter->netdev)) {
1843 int mcc_compl, status = 0;
1844
1845 mcc_compl = be_process_mcc(adapter, &status);
1846
1847 if (mcc_compl) {
1848 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1849 be_cq_notify(adapter, mcc_obj->cq.id, false, mcc_compl);
1850 }
1851
1852 if (!adapter->ue_detected && !lancer_chip(adapter))
1853 be_detect_dump_ue(adapter);
1854
1855 goto reschedule;
1856 }
1857
1858 if (!adapter->stats_cmd_sent)
1859 be_cmd_get_stats(adapter, &adapter->stats_cmd);
1860
1861 be_tx_rate_update(adapter);
1862
1863 for_all_rx_queues(adapter, rxo, i) {
1864 be_rx_rate_update(rxo);
1865 be_rx_eqd_update(adapter, rxo);
1866
1867 if (rxo->rx_post_starved) {
1868 rxo->rx_post_starved = false;
1869 be_post_rx_frags(rxo, GFP_KERNEL);
1870 }
1871 }
1872 if (!adapter->ue_detected && !lancer_chip(adapter))
1873 be_detect_dump_ue(adapter);
1874
1875 reschedule:
1876 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1877 }
1878
1879 static void be_msix_disable(struct be_adapter *adapter)
1880 {
1881 if (adapter->msix_enabled) {
1882 pci_disable_msix(adapter->pdev);
1883 adapter->msix_enabled = false;
1884 }
1885 }
1886
1887 static int be_num_rxqs_get(struct be_adapter *adapter)
1888 {
1889 if (multi_rxq && (adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
1890 !adapter->sriov_enabled && !(adapter->function_mode & 0x400)) {
1891 return 1 + MAX_RSS_QS; /* one default non-RSS queue */
1892 } else {
1893 dev_warn(&adapter->pdev->dev,
1894 "No support for multiple RX queues\n");
1895 return 1;
1896 }
1897 }
1898
1899 static void be_msix_enable(struct be_adapter *adapter)
1900 {
1901 #define BE_MIN_MSIX_VECTORS (1 + 1) /* Rx + Tx */
1902 int i, status;
1903
1904 adapter->num_rx_qs = be_num_rxqs_get(adapter);
1905
1906 for (i = 0; i < (adapter->num_rx_qs + 1); i++)
1907 adapter->msix_entries[i].entry = i;
1908
1909 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1910 adapter->num_rx_qs + 1);
1911 if (status == 0) {
1912 goto done;
1913 } else if (status >= BE_MIN_MSIX_VECTORS) {
1914 if (pci_enable_msix(adapter->pdev, adapter->msix_entries,
1915 status) == 0) {
1916 adapter->num_rx_qs = status - 1;
1917 dev_warn(&adapter->pdev->dev,
1918 "Could alloc only %d MSIx vectors. "
1919 "Using %d RX Qs\n", status, adapter->num_rx_qs);
1920 goto done;
1921 }
1922 }
1923 return;
1924 done:
1925 adapter->msix_enabled = true;
1926 }
1927
1928 static void be_sriov_enable(struct be_adapter *adapter)
1929 {
1930 be_check_sriov_fn_type(adapter);
1931 #ifdef CONFIG_PCI_IOV
1932 if (be_physfn(adapter) && num_vfs) {
1933 int status;
1934
1935 status = pci_enable_sriov(adapter->pdev, num_vfs);
1936 adapter->sriov_enabled = status ? false : true;
1937 }
1938 #endif
1939 }
1940
1941 static void be_sriov_disable(struct be_adapter *adapter)
1942 {
1943 #ifdef CONFIG_PCI_IOV
1944 if (adapter->sriov_enabled) {
1945 pci_disable_sriov(adapter->pdev);
1946 adapter->sriov_enabled = false;
1947 }
1948 #endif
1949 }
1950
1951 static inline int be_msix_vec_get(struct be_adapter *adapter,
1952 struct be_eq_obj *eq_obj)
1953 {
1954 return adapter->msix_entries[eq_obj->eq_idx].vector;
1955 }
1956
1957 static int be_request_irq(struct be_adapter *adapter,
1958 struct be_eq_obj *eq_obj,
1959 void *handler, char *desc, void *context)
1960 {
1961 struct net_device *netdev = adapter->netdev;
1962 int vec;
1963
1964 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1965 vec = be_msix_vec_get(adapter, eq_obj);
1966 return request_irq(vec, handler, 0, eq_obj->desc, context);
1967 }
1968
1969 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj,
1970 void *context)
1971 {
1972 int vec = be_msix_vec_get(adapter, eq_obj);
1973 free_irq(vec, context);
1974 }
1975
1976 static int be_msix_register(struct be_adapter *adapter)
1977 {
1978 struct be_rx_obj *rxo;
1979 int status, i;
1980 char qname[10];
1981
1982 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx",
1983 adapter);
1984 if (status)
1985 goto err;
1986
1987 for_all_rx_queues(adapter, rxo, i) {
1988 sprintf(qname, "rxq%d", i);
1989 status = be_request_irq(adapter, &rxo->rx_eq, be_msix_rx,
1990 qname, rxo);
1991 if (status)
1992 goto err_msix;
1993 }
1994
1995 return 0;
1996
1997 err_msix:
1998 be_free_irq(adapter, &adapter->tx_eq, adapter);
1999
2000 for (i--, rxo = &adapter->rx_obj[i]; i >= 0; i--, rxo--)
2001 be_free_irq(adapter, &rxo->rx_eq, rxo);
2002
2003 err:
2004 dev_warn(&adapter->pdev->dev,
2005 "MSIX Request IRQ failed - err %d\n", status);
2006 pci_disable_msix(adapter->pdev);
2007 adapter->msix_enabled = false;
2008 return status;
2009 }
2010
2011 static int be_irq_register(struct be_adapter *adapter)
2012 {
2013 struct net_device *netdev = adapter->netdev;
2014 int status;
2015
2016 if (adapter->msix_enabled) {
2017 status = be_msix_register(adapter);
2018 if (status == 0)
2019 goto done;
2020 /* INTx is not supported for VF */
2021 if (!be_physfn(adapter))
2022 return status;
2023 }
2024
2025 /* INTx */
2026 netdev->irq = adapter->pdev->irq;
2027 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
2028 adapter);
2029 if (status) {
2030 dev_err(&adapter->pdev->dev,
2031 "INTx request IRQ failed - err %d\n", status);
2032 return status;
2033 }
2034 done:
2035 adapter->isr_registered = true;
2036 return 0;
2037 }
2038
2039 static void be_irq_unregister(struct be_adapter *adapter)
2040 {
2041 struct net_device *netdev = adapter->netdev;
2042 struct be_rx_obj *rxo;
2043 int i;
2044
2045 if (!adapter->isr_registered)
2046 return;
2047
2048 /* INTx */
2049 if (!adapter->msix_enabled) {
2050 free_irq(netdev->irq, adapter);
2051 goto done;
2052 }
2053
2054 /* MSIx */
2055 be_free_irq(adapter, &adapter->tx_eq, adapter);
2056
2057 for_all_rx_queues(adapter, rxo, i)
2058 be_free_irq(adapter, &rxo->rx_eq, rxo);
2059
2060 done:
2061 adapter->isr_registered = false;
2062 }
2063
2064 static int be_close(struct net_device *netdev)
2065 {
2066 struct be_adapter *adapter = netdev_priv(netdev);
2067 struct be_rx_obj *rxo;
2068 struct be_eq_obj *tx_eq = &adapter->tx_eq;
2069 int vec, i;
2070
2071 be_async_mcc_disable(adapter);
2072
2073 netif_carrier_off(netdev);
2074 adapter->link_up = false;
2075
2076 if (!lancer_chip(adapter))
2077 be_intr_set(adapter, false);
2078
2079 for_all_rx_queues(adapter, rxo, i)
2080 napi_disable(&rxo->rx_eq.napi);
2081
2082 napi_disable(&tx_eq->napi);
2083
2084 if (lancer_chip(adapter)) {
2085 be_cq_notify(adapter, adapter->tx_obj.cq.id, false, 0);
2086 be_cq_notify(adapter, adapter->mcc_obj.cq.id, false, 0);
2087 for_all_rx_queues(adapter, rxo, i)
2088 be_cq_notify(adapter, rxo->cq.id, false, 0);
2089 }
2090
2091 if (adapter->msix_enabled) {
2092 vec = be_msix_vec_get(adapter, tx_eq);
2093 synchronize_irq(vec);
2094
2095 for_all_rx_queues(adapter, rxo, i) {
2096 vec = be_msix_vec_get(adapter, &rxo->rx_eq);
2097 synchronize_irq(vec);
2098 }
2099 } else {
2100 synchronize_irq(netdev->irq);
2101 }
2102 be_irq_unregister(adapter);
2103
2104 /* Wait for all pending tx completions to arrive so that
2105 * all tx skbs are freed.
2106 */
2107 be_tx_compl_clean(adapter);
2108
2109 return 0;
2110 }
2111
2112 static int be_open(struct net_device *netdev)
2113 {
2114 struct be_adapter *adapter = netdev_priv(netdev);
2115 struct be_eq_obj *tx_eq = &adapter->tx_eq;
2116 struct be_rx_obj *rxo;
2117 bool link_up;
2118 int status, i;
2119 u8 mac_speed;
2120 u16 link_speed;
2121
2122 for_all_rx_queues(adapter, rxo, i) {
2123 be_post_rx_frags(rxo, GFP_KERNEL);
2124 napi_enable(&rxo->rx_eq.napi);
2125 }
2126 napi_enable(&tx_eq->napi);
2127
2128 be_irq_register(adapter);
2129
2130 if (!lancer_chip(adapter))
2131 be_intr_set(adapter, true);
2132
2133 /* The evt queues are created in unarmed state; arm them */
2134 for_all_rx_queues(adapter, rxo, i) {
2135 be_eq_notify(adapter, rxo->rx_eq.q.id, true, false, 0);
2136 be_cq_notify(adapter, rxo->cq.id, true, 0);
2137 }
2138 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
2139
2140 /* Now that interrupts are on we can process async mcc */
2141 be_async_mcc_enable(adapter);
2142
2143 status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
2144 &link_speed);
2145 if (status)
2146 goto err;
2147 be_link_status_update(adapter, link_up);
2148
2149 if (be_physfn(adapter)) {
2150 status = be_vid_config(adapter, false, 0);
2151 if (status)
2152 goto err;
2153
2154 status = be_cmd_set_flow_control(adapter,
2155 adapter->tx_fc, adapter->rx_fc);
2156 if (status)
2157 goto err;
2158 }
2159
2160 return 0;
2161 err:
2162 be_close(adapter->netdev);
2163 return -EIO;
2164 }
2165
2166 static int be_setup_wol(struct be_adapter *adapter, bool enable)
2167 {
2168 struct be_dma_mem cmd;
2169 int status = 0;
2170 u8 mac[ETH_ALEN];
2171
2172 memset(mac, 0, ETH_ALEN);
2173
2174 cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
2175 cmd.va = dma_alloc_coherent(&adapter->pdev->dev, cmd.size, &cmd.dma,
2176 GFP_KERNEL);
2177 if (cmd.va == NULL)
2178 return -1;
2179 memset(cmd.va, 0, cmd.size);
2180
2181 if (enable) {
2182 status = pci_write_config_dword(adapter->pdev,
2183 PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
2184 if (status) {
2185 dev_err(&adapter->pdev->dev,
2186 "Could not enable Wake-on-lan\n");
2187 dma_free_coherent(&adapter->pdev->dev, cmd.size, cmd.va,
2188 cmd.dma);
2189 return status;
2190 }
2191 status = be_cmd_enable_magic_wol(adapter,
2192 adapter->netdev->dev_addr, &cmd);
2193 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
2194 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
2195 } else {
2196 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
2197 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
2198 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
2199 }
2200
2201 dma_free_coherent(&adapter->pdev->dev, cmd.size, cmd.va, cmd.dma);
2202 return status;
2203 }
2204
2205 /*
2206 * Generate a seed MAC address from the PF MAC Address using jhash.
2207 * MAC Address for VFs are assigned incrementally starting from the seed.
2208 * These addresses are programmed in the ASIC by the PF and the VF driver
2209 * queries for the MAC address during its probe.
2210 */
2211 static inline int be_vf_eth_addr_config(struct be_adapter *adapter)
2212 {
2213 u32 vf = 0;
2214 int status = 0;
2215 u8 mac[ETH_ALEN];
2216
2217 be_vf_eth_addr_generate(adapter, mac);
2218
2219 for (vf = 0; vf < num_vfs; vf++) {
2220 status = be_cmd_pmac_add(adapter, mac,
2221 adapter->vf_cfg[vf].vf_if_handle,
2222 &adapter->vf_cfg[vf].vf_pmac_id,
2223 vf + 1);
2224 if (status)
2225 dev_err(&adapter->pdev->dev,
2226 "Mac address add failed for VF %d\n", vf);
2227 else
2228 memcpy(adapter->vf_cfg[vf].vf_mac_addr, mac, ETH_ALEN);
2229
2230 mac[5] += 1;
2231 }
2232 return status;
2233 }
2234
2235 static inline void be_vf_eth_addr_rem(struct be_adapter *adapter)
2236 {
2237 u32 vf;
2238
2239 for (vf = 0; vf < num_vfs; vf++) {
2240 if (adapter->vf_cfg[vf].vf_pmac_id != BE_INVALID_PMAC_ID)
2241 be_cmd_pmac_del(adapter,
2242 adapter->vf_cfg[vf].vf_if_handle,
2243 adapter->vf_cfg[vf].vf_pmac_id, vf + 1);
2244 }
2245 }
2246
2247 static int be_setup(struct be_adapter *adapter)
2248 {
2249 struct net_device *netdev = adapter->netdev;
2250 u32 cap_flags, en_flags, vf = 0;
2251 int status;
2252 u8 mac[ETH_ALEN];
2253
2254 cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED |
2255 BE_IF_FLAGS_BROADCAST |
2256 BE_IF_FLAGS_MULTICAST;
2257
2258 if (be_physfn(adapter)) {
2259 cap_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS |
2260 BE_IF_FLAGS_PROMISCUOUS |
2261 BE_IF_FLAGS_PASS_L3L4_ERRORS;
2262 en_flags |= BE_IF_FLAGS_PASS_L3L4_ERRORS;
2263
2264 if (be_multi_rxq(adapter)) {
2265 cap_flags |= BE_IF_FLAGS_RSS;
2266 en_flags |= BE_IF_FLAGS_RSS;
2267 }
2268 }
2269
2270 status = be_cmd_if_create(adapter, cap_flags, en_flags,
2271 netdev->dev_addr, false/* pmac_invalid */,
2272 &adapter->if_handle, &adapter->pmac_id, 0);
2273 if (status != 0)
2274 goto do_none;
2275
2276 if (be_physfn(adapter)) {
2277 if (adapter->sriov_enabled) {
2278 while (vf < num_vfs) {
2279 cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED |
2280 BE_IF_FLAGS_BROADCAST;
2281 status = be_cmd_if_create(adapter, cap_flags,
2282 en_flags, mac, true,
2283 &adapter->vf_cfg[vf].vf_if_handle,
2284 NULL, vf+1);
2285 if (status) {
2286 dev_err(&adapter->pdev->dev,
2287 "Interface Create failed for VF %d\n",
2288 vf);
2289 goto if_destroy;
2290 }
2291 adapter->vf_cfg[vf].vf_pmac_id =
2292 BE_INVALID_PMAC_ID;
2293 vf++;
2294 }
2295 }
2296 } else {
2297 status = be_cmd_mac_addr_query(adapter, mac,
2298 MAC_ADDRESS_TYPE_NETWORK, false, adapter->if_handle);
2299 if (!status) {
2300 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2301 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2302 }
2303 }
2304
2305 status = be_tx_queues_create(adapter);
2306 if (status != 0)
2307 goto if_destroy;
2308
2309 status = be_rx_queues_create(adapter);
2310 if (status != 0)
2311 goto tx_qs_destroy;
2312
2313 status = be_mcc_queues_create(adapter);
2314 if (status != 0)
2315 goto rx_qs_destroy;
2316
2317 adapter->link_speed = -1;
2318
2319 return 0;
2320
2321 be_mcc_queues_destroy(adapter);
2322 rx_qs_destroy:
2323 be_rx_queues_destroy(adapter);
2324 tx_qs_destroy:
2325 be_tx_queues_destroy(adapter);
2326 if_destroy:
2327 if (be_physfn(adapter) && adapter->sriov_enabled)
2328 for (vf = 0; vf < num_vfs; vf++)
2329 if (adapter->vf_cfg[vf].vf_if_handle)
2330 be_cmd_if_destroy(adapter,
2331 adapter->vf_cfg[vf].vf_if_handle,
2332 vf + 1);
2333 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
2334 do_none:
2335 return status;
2336 }
2337
2338 static int be_clear(struct be_adapter *adapter)
2339 {
2340 int vf;
2341
2342 if (be_physfn(adapter) && adapter->sriov_enabled)
2343 be_vf_eth_addr_rem(adapter);
2344
2345 be_mcc_queues_destroy(adapter);
2346 be_rx_queues_destroy(adapter);
2347 be_tx_queues_destroy(adapter);
2348 adapter->eq_next_idx = 0;
2349
2350 if (be_physfn(adapter) && adapter->sriov_enabled)
2351 for (vf = 0; vf < num_vfs; vf++)
2352 if (adapter->vf_cfg[vf].vf_if_handle)
2353 be_cmd_if_destroy(adapter,
2354 adapter->vf_cfg[vf].vf_if_handle,
2355 vf + 1);
2356
2357 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
2358
2359 /* tell fw we're done with firing cmds */
2360 be_cmd_fw_clean(adapter);
2361 return 0;
2362 }
2363
2364
2365 #define FW_FILE_HDR_SIGN "ServerEngines Corp. "
2366 static bool be_flash_redboot(struct be_adapter *adapter,
2367 const u8 *p, u32 img_start, int image_size,
2368 int hdr_size)
2369 {
2370 u32 crc_offset;
2371 u8 flashed_crc[4];
2372 int status;
2373
2374 crc_offset = hdr_size + img_start + image_size - 4;
2375
2376 p += crc_offset;
2377
2378 status = be_cmd_get_flash_crc(adapter, flashed_crc,
2379 (image_size - 4));
2380 if (status) {
2381 dev_err(&adapter->pdev->dev,
2382 "could not get crc from flash, not flashing redboot\n");
2383 return false;
2384 }
2385
2386 /*update redboot only if crc does not match*/
2387 if (!memcmp(flashed_crc, p, 4))
2388 return false;
2389 else
2390 return true;
2391 }
2392
2393 static int be_flash_data(struct be_adapter *adapter,
2394 const struct firmware *fw,
2395 struct be_dma_mem *flash_cmd, int num_of_images)
2396
2397 {
2398 int status = 0, i, filehdr_size = 0;
2399 u32 total_bytes = 0, flash_op;
2400 int num_bytes;
2401 const u8 *p = fw->data;
2402 struct be_cmd_write_flashrom *req = flash_cmd->va;
2403 const struct flash_comp *pflashcomp;
2404 int num_comp;
2405
2406 static const struct flash_comp gen3_flash_types[9] = {
2407 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
2408 FLASH_IMAGE_MAX_SIZE_g3},
2409 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
2410 FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
2411 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
2412 FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2413 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
2414 FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2415 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
2416 FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2417 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
2418 FLASH_IMAGE_MAX_SIZE_g3},
2419 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
2420 FLASH_IMAGE_MAX_SIZE_g3},
2421 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
2422 FLASH_IMAGE_MAX_SIZE_g3},
2423 { FLASH_NCSI_START_g3, IMG_TYPE_NCSI_FW,
2424 FLASH_NCSI_IMAGE_MAX_SIZE_g3}
2425 };
2426 static const struct flash_comp gen2_flash_types[8] = {
2427 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
2428 FLASH_IMAGE_MAX_SIZE_g2},
2429 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
2430 FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
2431 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
2432 FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2433 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
2434 FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2435 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
2436 FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2437 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
2438 FLASH_IMAGE_MAX_SIZE_g2},
2439 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
2440 FLASH_IMAGE_MAX_SIZE_g2},
2441 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
2442 FLASH_IMAGE_MAX_SIZE_g2}
2443 };
2444
2445 if (adapter->generation == BE_GEN3) {
2446 pflashcomp = gen3_flash_types;
2447 filehdr_size = sizeof(struct flash_file_hdr_g3);
2448 num_comp = ARRAY_SIZE(gen3_flash_types);
2449 } else {
2450 pflashcomp = gen2_flash_types;
2451 filehdr_size = sizeof(struct flash_file_hdr_g2);
2452 num_comp = ARRAY_SIZE(gen2_flash_types);
2453 }
2454 for (i = 0; i < num_comp; i++) {
2455 if ((pflashcomp[i].optype == IMG_TYPE_NCSI_FW) &&
2456 memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
2457 continue;
2458 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
2459 (!be_flash_redboot(adapter, fw->data,
2460 pflashcomp[i].offset, pflashcomp[i].size, filehdr_size +
2461 (num_of_images * sizeof(struct image_hdr)))))
2462 continue;
2463 p = fw->data;
2464 p += filehdr_size + pflashcomp[i].offset
2465 + (num_of_images * sizeof(struct image_hdr));
2466 if (p + pflashcomp[i].size > fw->data + fw->size)
2467 return -1;
2468 total_bytes = pflashcomp[i].size;
2469 while (total_bytes) {
2470 if (total_bytes > 32*1024)
2471 num_bytes = 32*1024;
2472 else
2473 num_bytes = total_bytes;
2474 total_bytes -= num_bytes;
2475
2476 if (!total_bytes)
2477 flash_op = FLASHROM_OPER_FLASH;
2478 else
2479 flash_op = FLASHROM_OPER_SAVE;
2480 memcpy(req->params.data_buf, p, num_bytes);
2481 p += num_bytes;
2482 status = be_cmd_write_flashrom(adapter, flash_cmd,
2483 pflashcomp[i].optype, flash_op, num_bytes);
2484 if (status) {
2485 dev_err(&adapter->pdev->dev,
2486 "cmd to write to flash rom failed.\n");
2487 return -1;
2488 }
2489 yield();
2490 }
2491 }
2492 return 0;
2493 }
2494
2495 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
2496 {
2497 if (fhdr == NULL)
2498 return 0;
2499 if (fhdr->build[0] == '3')
2500 return BE_GEN3;
2501 else if (fhdr->build[0] == '2')
2502 return BE_GEN2;
2503 else
2504 return 0;
2505 }
2506
2507 int be_load_fw(struct be_adapter *adapter, u8 *func)
2508 {
2509 char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
2510 const struct firmware *fw;
2511 struct flash_file_hdr_g2 *fhdr;
2512 struct flash_file_hdr_g3 *fhdr3;
2513 struct image_hdr *img_hdr_ptr = NULL;
2514 struct be_dma_mem flash_cmd;
2515 int status, i = 0, num_imgs = 0;
2516 const u8 *p;
2517
2518 if (!netif_running(adapter->netdev)) {
2519 dev_err(&adapter->pdev->dev,
2520 "Firmware load not allowed (interface is down)\n");
2521 return -EPERM;
2522 }
2523
2524 strcpy(fw_file, func);
2525
2526 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2527 if (status)
2528 goto fw_exit;
2529
2530 p = fw->data;
2531 fhdr = (struct flash_file_hdr_g2 *) p;
2532 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2533
2534 flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2535 flash_cmd.va = dma_alloc_coherent(&adapter->pdev->dev, flash_cmd.size,
2536 &flash_cmd.dma, GFP_KERNEL);
2537 if (!flash_cmd.va) {
2538 status = -ENOMEM;
2539 dev_err(&adapter->pdev->dev,
2540 "Memory allocation failure while flashing\n");
2541 goto fw_exit;
2542 }
2543
2544 if ((adapter->generation == BE_GEN3) &&
2545 (get_ufigen_type(fhdr) == BE_GEN3)) {
2546 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2547 num_imgs = le32_to_cpu(fhdr3->num_imgs);
2548 for (i = 0; i < num_imgs; i++) {
2549 img_hdr_ptr = (struct image_hdr *) (fw->data +
2550 (sizeof(struct flash_file_hdr_g3) +
2551 i * sizeof(struct image_hdr)));
2552 if (le32_to_cpu(img_hdr_ptr->imageid) == 1)
2553 status = be_flash_data(adapter, fw, &flash_cmd,
2554 num_imgs);
2555 }
2556 } else if ((adapter->generation == BE_GEN2) &&
2557 (get_ufigen_type(fhdr) == BE_GEN2)) {
2558 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2559 } else {
2560 dev_err(&adapter->pdev->dev,
2561 "UFI and Interface are not compatible for flashing\n");
2562 status = -1;
2563 }
2564
2565 dma_free_coherent(&adapter->pdev->dev, flash_cmd.size, flash_cmd.va,
2566 flash_cmd.dma);
2567 if (status) {
2568 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2569 goto fw_exit;
2570 }
2571
2572 dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2573
2574 fw_exit:
2575 release_firmware(fw);
2576 return status;
2577 }
2578
2579 static struct net_device_ops be_netdev_ops = {
2580 .ndo_open = be_open,
2581 .ndo_stop = be_close,
2582 .ndo_start_xmit = be_xmit,
2583 .ndo_set_rx_mode = be_set_multicast_list,
2584 .ndo_set_mac_address = be_mac_addr_set,
2585 .ndo_change_mtu = be_change_mtu,
2586 .ndo_validate_addr = eth_validate_addr,
2587 .ndo_vlan_rx_register = be_vlan_register,
2588 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
2589 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
2590 .ndo_set_vf_mac = be_set_vf_mac,
2591 .ndo_set_vf_vlan = be_set_vf_vlan,
2592 .ndo_set_vf_tx_rate = be_set_vf_tx_rate,
2593 .ndo_get_vf_config = be_get_vf_config
2594 };
2595
2596 static void be_netdev_init(struct net_device *netdev)
2597 {
2598 struct be_adapter *adapter = netdev_priv(netdev);
2599 struct be_rx_obj *rxo;
2600 int i;
2601
2602 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2603 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
2604 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2605 NETIF_F_GRO | NETIF_F_TSO6;
2606
2607 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO |
2608 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2609
2610 if (lancer_chip(adapter))
2611 netdev->vlan_features |= NETIF_F_TSO6;
2612
2613 netdev->flags |= IFF_MULTICAST;
2614
2615 adapter->rx_csum = true;
2616
2617 /* Default settings for Rx and Tx flow control */
2618 adapter->rx_fc = true;
2619 adapter->tx_fc = true;
2620
2621 netif_set_gso_max_size(netdev, 65535);
2622
2623 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2624
2625 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2626
2627 for_all_rx_queues(adapter, rxo, i)
2628 netif_napi_add(netdev, &rxo->rx_eq.napi, be_poll_rx,
2629 BE_NAPI_WEIGHT);
2630
2631 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2632 BE_NAPI_WEIGHT);
2633 }
2634
2635 static void be_unmap_pci_bars(struct be_adapter *adapter)
2636 {
2637 if (adapter->csr)
2638 iounmap(adapter->csr);
2639 if (adapter->db)
2640 iounmap(adapter->db);
2641 if (adapter->pcicfg && be_physfn(adapter))
2642 iounmap(adapter->pcicfg);
2643 }
2644
2645 static int be_map_pci_bars(struct be_adapter *adapter)
2646 {
2647 u8 __iomem *addr;
2648 int pcicfg_reg, db_reg;
2649
2650 if (lancer_chip(adapter)) {
2651 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 0),
2652 pci_resource_len(adapter->pdev, 0));
2653 if (addr == NULL)
2654 return -ENOMEM;
2655 adapter->db = addr;
2656 return 0;
2657 }
2658
2659 if (be_physfn(adapter)) {
2660 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2661 pci_resource_len(adapter->pdev, 2));
2662 if (addr == NULL)
2663 return -ENOMEM;
2664 adapter->csr = addr;
2665 }
2666
2667 if (adapter->generation == BE_GEN2) {
2668 pcicfg_reg = 1;
2669 db_reg = 4;
2670 } else {
2671 pcicfg_reg = 0;
2672 if (be_physfn(adapter))
2673 db_reg = 4;
2674 else
2675 db_reg = 0;
2676 }
2677 addr = ioremap_nocache(pci_resource_start(adapter->pdev, db_reg),
2678 pci_resource_len(adapter->pdev, db_reg));
2679 if (addr == NULL)
2680 goto pci_map_err;
2681 adapter->db = addr;
2682
2683 if (be_physfn(adapter)) {
2684 addr = ioremap_nocache(
2685 pci_resource_start(adapter->pdev, pcicfg_reg),
2686 pci_resource_len(adapter->pdev, pcicfg_reg));
2687 if (addr == NULL)
2688 goto pci_map_err;
2689 adapter->pcicfg = addr;
2690 } else
2691 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
2692
2693 return 0;
2694 pci_map_err:
2695 be_unmap_pci_bars(adapter);
2696 return -ENOMEM;
2697 }
2698
2699
2700 static void be_ctrl_cleanup(struct be_adapter *adapter)
2701 {
2702 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2703
2704 be_unmap_pci_bars(adapter);
2705
2706 if (mem->va)
2707 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
2708 mem->dma);
2709
2710 mem = &adapter->mc_cmd_mem;
2711 if (mem->va)
2712 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
2713 mem->dma);
2714 }
2715
2716 static int be_ctrl_init(struct be_adapter *adapter)
2717 {
2718 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2719 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2720 struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2721 int status;
2722
2723 status = be_map_pci_bars(adapter);
2724 if (status)
2725 goto done;
2726
2727 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2728 mbox_mem_alloc->va = dma_alloc_coherent(&adapter->pdev->dev,
2729 mbox_mem_alloc->size,
2730 &mbox_mem_alloc->dma,
2731 GFP_KERNEL);
2732 if (!mbox_mem_alloc->va) {
2733 status = -ENOMEM;
2734 goto unmap_pci_bars;
2735 }
2736
2737 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2738 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2739 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2740 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2741
2742 mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2743 mc_cmd_mem->va = dma_alloc_coherent(&adapter->pdev->dev,
2744 mc_cmd_mem->size, &mc_cmd_mem->dma,
2745 GFP_KERNEL);
2746 if (mc_cmd_mem->va == NULL) {
2747 status = -ENOMEM;
2748 goto free_mbox;
2749 }
2750 memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2751
2752 mutex_init(&adapter->mbox_lock);
2753 spin_lock_init(&adapter->mcc_lock);
2754 spin_lock_init(&adapter->mcc_cq_lock);
2755
2756 init_completion(&adapter->flash_compl);
2757 pci_save_state(adapter->pdev);
2758 return 0;
2759
2760 free_mbox:
2761 dma_free_coherent(&adapter->pdev->dev, mbox_mem_alloc->size,
2762 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2763
2764 unmap_pci_bars:
2765 be_unmap_pci_bars(adapter);
2766
2767 done:
2768 return status;
2769 }
2770
2771 static void be_stats_cleanup(struct be_adapter *adapter)
2772 {
2773 struct be_dma_mem *cmd = &adapter->stats_cmd;
2774
2775 if (cmd->va)
2776 dma_free_coherent(&adapter->pdev->dev, cmd->size,
2777 cmd->va, cmd->dma);
2778 }
2779
2780 static int be_stats_init(struct be_adapter *adapter)
2781 {
2782 struct be_dma_mem *cmd = &adapter->stats_cmd;
2783
2784 cmd->size = sizeof(struct be_cmd_req_get_stats);
2785 cmd->va = dma_alloc_coherent(&adapter->pdev->dev, cmd->size, &cmd->dma,
2786 GFP_KERNEL);
2787 if (cmd->va == NULL)
2788 return -1;
2789 memset(cmd->va, 0, cmd->size);
2790 return 0;
2791 }
2792
2793 static void __devexit be_remove(struct pci_dev *pdev)
2794 {
2795 struct be_adapter *adapter = pci_get_drvdata(pdev);
2796
2797 if (!adapter)
2798 return;
2799
2800 cancel_delayed_work_sync(&adapter->work);
2801
2802 unregister_netdev(adapter->netdev);
2803
2804 be_clear(adapter);
2805
2806 be_stats_cleanup(adapter);
2807
2808 be_ctrl_cleanup(adapter);
2809
2810 be_sriov_disable(adapter);
2811
2812 be_msix_disable(adapter);
2813
2814 pci_set_drvdata(pdev, NULL);
2815 pci_release_regions(pdev);
2816 pci_disable_device(pdev);
2817
2818 free_netdev(adapter->netdev);
2819 }
2820
2821 static int be_get_config(struct be_adapter *adapter)
2822 {
2823 int status;
2824 u8 mac[ETH_ALEN];
2825
2826 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2827 if (status)
2828 return status;
2829
2830 status = be_cmd_query_fw_cfg(adapter, &adapter->port_num,
2831 &adapter->function_mode, &adapter->function_caps);
2832 if (status)
2833 return status;
2834
2835 memset(mac, 0, ETH_ALEN);
2836
2837 if (be_physfn(adapter)) {
2838 status = be_cmd_mac_addr_query(adapter, mac,
2839 MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2840
2841 if (status)
2842 return status;
2843
2844 if (!is_valid_ether_addr(mac))
2845 return -EADDRNOTAVAIL;
2846
2847 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2848 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2849 }
2850
2851 if (adapter->function_mode & 0x400)
2852 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2853 else
2854 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2855
2856 status = be_cmd_get_cntl_attributes(adapter);
2857 if (status)
2858 return status;
2859
2860 be_cmd_check_native_mode(adapter);
2861 return 0;
2862 }
2863
2864 static int be_dev_family_check(struct be_adapter *adapter)
2865 {
2866 struct pci_dev *pdev = adapter->pdev;
2867 u32 sli_intf = 0, if_type;
2868
2869 switch (pdev->device) {
2870 case BE_DEVICE_ID1:
2871 case OC_DEVICE_ID1:
2872 adapter->generation = BE_GEN2;
2873 break;
2874 case BE_DEVICE_ID2:
2875 case OC_DEVICE_ID2:
2876 adapter->generation = BE_GEN3;
2877 break;
2878 case OC_DEVICE_ID3:
2879 pci_read_config_dword(pdev, SLI_INTF_REG_OFFSET, &sli_intf);
2880 if_type = (sli_intf & SLI_INTF_IF_TYPE_MASK) >>
2881 SLI_INTF_IF_TYPE_SHIFT;
2882
2883 if (((sli_intf & SLI_INTF_VALID_MASK) != SLI_INTF_VALID) ||
2884 if_type != 0x02) {
2885 dev_err(&pdev->dev, "SLI_INTF reg val is not valid\n");
2886 return -EINVAL;
2887 }
2888 if (num_vfs > 0) {
2889 dev_err(&pdev->dev, "VFs not supported\n");
2890 return -EINVAL;
2891 }
2892 adapter->sli_family = ((sli_intf & SLI_INTF_FAMILY_MASK) >>
2893 SLI_INTF_FAMILY_SHIFT);
2894 adapter->generation = BE_GEN3;
2895 break;
2896 default:
2897 adapter->generation = 0;
2898 }
2899 return 0;
2900 }
2901
2902 static int lancer_wait_ready(struct be_adapter *adapter)
2903 {
2904 #define SLIPORT_READY_TIMEOUT 500
2905 u32 sliport_status;
2906 int status = 0, i;
2907
2908 for (i = 0; i < SLIPORT_READY_TIMEOUT; i++) {
2909 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
2910 if (sliport_status & SLIPORT_STATUS_RDY_MASK)
2911 break;
2912
2913 msleep(20);
2914 }
2915
2916 if (i == SLIPORT_READY_TIMEOUT)
2917 status = -1;
2918
2919 return status;
2920 }
2921
2922 static int lancer_test_and_set_rdy_state(struct be_adapter *adapter)
2923 {
2924 int status;
2925 u32 sliport_status, err, reset_needed;
2926 status = lancer_wait_ready(adapter);
2927 if (!status) {
2928 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
2929 err = sliport_status & SLIPORT_STATUS_ERR_MASK;
2930 reset_needed = sliport_status & SLIPORT_STATUS_RN_MASK;
2931 if (err && reset_needed) {
2932 iowrite32(SLI_PORT_CONTROL_IP_MASK,
2933 adapter->db + SLIPORT_CONTROL_OFFSET);
2934
2935 /* check adapter has corrected the error */
2936 status = lancer_wait_ready(adapter);
2937 sliport_status = ioread32(adapter->db +
2938 SLIPORT_STATUS_OFFSET);
2939 sliport_status &= (SLIPORT_STATUS_ERR_MASK |
2940 SLIPORT_STATUS_RN_MASK);
2941 if (status || sliport_status)
2942 status = -1;
2943 } else if (err || reset_needed) {
2944 status = -1;
2945 }
2946 }
2947 return status;
2948 }
2949
2950 static int __devinit be_probe(struct pci_dev *pdev,
2951 const struct pci_device_id *pdev_id)
2952 {
2953 int status = 0;
2954 struct be_adapter *adapter;
2955 struct net_device *netdev;
2956
2957 status = pci_enable_device(pdev);
2958 if (status)
2959 goto do_none;
2960
2961 status = pci_request_regions(pdev, DRV_NAME);
2962 if (status)
2963 goto disable_dev;
2964 pci_set_master(pdev);
2965
2966 netdev = alloc_etherdev(sizeof(struct be_adapter));
2967 if (netdev == NULL) {
2968 status = -ENOMEM;
2969 goto rel_reg;
2970 }
2971 adapter = netdev_priv(netdev);
2972 adapter->pdev = pdev;
2973 pci_set_drvdata(pdev, adapter);
2974
2975 status = be_dev_family_check(adapter);
2976 if (status)
2977 goto free_netdev;
2978
2979 adapter->netdev = netdev;
2980 SET_NETDEV_DEV(netdev, &pdev->dev);
2981
2982 status = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
2983 if (!status) {
2984 netdev->features |= NETIF_F_HIGHDMA;
2985 } else {
2986 status = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
2987 if (status) {
2988 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2989 goto free_netdev;
2990 }
2991 }
2992
2993 be_sriov_enable(adapter);
2994
2995 status = be_ctrl_init(adapter);
2996 if (status)
2997 goto free_netdev;
2998
2999 if (lancer_chip(adapter)) {
3000 status = lancer_test_and_set_rdy_state(adapter);
3001 if (status) {
3002 dev_err(&pdev->dev, "Adapter in non recoverable error\n");
3003 goto free_netdev;
3004 }
3005 }
3006
3007 /* sync up with fw's ready state */
3008 if (be_physfn(adapter)) {
3009 status = be_cmd_POST(adapter);
3010 if (status)
3011 goto ctrl_clean;
3012 }
3013
3014 /* tell fw we're ready to fire cmds */
3015 status = be_cmd_fw_init(adapter);
3016 if (status)
3017 goto ctrl_clean;
3018
3019 status = be_cmd_reset_function(adapter);
3020 if (status)
3021 goto ctrl_clean;
3022
3023 status = be_stats_init(adapter);
3024 if (status)
3025 goto ctrl_clean;
3026
3027 status = be_get_config(adapter);
3028 if (status)
3029 goto stats_clean;
3030
3031 be_msix_enable(adapter);
3032
3033 INIT_DELAYED_WORK(&adapter->work, be_worker);
3034
3035 status = be_setup(adapter);
3036 if (status)
3037 goto msix_disable;
3038
3039 be_netdev_init(netdev);
3040 status = register_netdev(netdev);
3041 if (status != 0)
3042 goto unsetup;
3043 netif_carrier_off(netdev);
3044
3045 if (be_physfn(adapter) && adapter->sriov_enabled) {
3046 status = be_vf_eth_addr_config(adapter);
3047 if (status)
3048 goto unreg_netdev;
3049 }
3050
3051 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
3052 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
3053 return 0;
3054
3055 unreg_netdev:
3056 unregister_netdev(netdev);
3057 unsetup:
3058 be_clear(adapter);
3059 msix_disable:
3060 be_msix_disable(adapter);
3061 stats_clean:
3062 be_stats_cleanup(adapter);
3063 ctrl_clean:
3064 be_ctrl_cleanup(adapter);
3065 free_netdev:
3066 be_sriov_disable(adapter);
3067 free_netdev(netdev);
3068 pci_set_drvdata(pdev, NULL);
3069 rel_reg:
3070 pci_release_regions(pdev);
3071 disable_dev:
3072 pci_disable_device(pdev);
3073 do_none:
3074 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
3075 return status;
3076 }
3077
3078 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
3079 {
3080 struct be_adapter *adapter = pci_get_drvdata(pdev);
3081 struct net_device *netdev = adapter->netdev;
3082
3083 cancel_delayed_work_sync(&adapter->work);
3084 if (adapter->wol)
3085 be_setup_wol(adapter, true);
3086
3087 netif_device_detach(netdev);
3088 if (netif_running(netdev)) {
3089 rtnl_lock();
3090 be_close(netdev);
3091 rtnl_unlock();
3092 }
3093 be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
3094 be_clear(adapter);
3095
3096 be_msix_disable(adapter);
3097 pci_save_state(pdev);
3098 pci_disable_device(pdev);
3099 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3100 return 0;
3101 }
3102
3103 static int be_resume(struct pci_dev *pdev)
3104 {
3105 int status = 0;
3106 struct be_adapter *adapter = pci_get_drvdata(pdev);
3107 struct net_device *netdev = adapter->netdev;
3108
3109 netif_device_detach(netdev);
3110
3111 status = pci_enable_device(pdev);
3112 if (status)
3113 return status;
3114
3115 pci_set_power_state(pdev, 0);
3116 pci_restore_state(pdev);
3117
3118 be_msix_enable(adapter);
3119 /* tell fw we're ready to fire cmds */
3120 status = be_cmd_fw_init(adapter);
3121 if (status)
3122 return status;
3123
3124 be_setup(adapter);
3125 if (netif_running(netdev)) {
3126 rtnl_lock();
3127 be_open(netdev);
3128 rtnl_unlock();
3129 }
3130 netif_device_attach(netdev);
3131
3132 if (adapter->wol)
3133 be_setup_wol(adapter, false);
3134
3135 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
3136 return 0;
3137 }
3138
3139 /*
3140 * An FLR will stop BE from DMAing any data.
3141 */
3142 static void be_shutdown(struct pci_dev *pdev)
3143 {
3144 struct be_adapter *adapter = pci_get_drvdata(pdev);
3145
3146 if (!adapter)
3147 return;
3148
3149 if (netif_running(adapter->netdev))
3150 cancel_delayed_work_sync(&adapter->work);
3151
3152 netif_device_detach(adapter->netdev);
3153
3154 be_cmd_reset_function(adapter);
3155
3156 if (adapter->wol)
3157 be_setup_wol(adapter, true);
3158
3159 pci_disable_device(pdev);
3160 }
3161
3162 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
3163 pci_channel_state_t state)
3164 {
3165 struct be_adapter *adapter = pci_get_drvdata(pdev);
3166 struct net_device *netdev = adapter->netdev;
3167
3168 dev_err(&adapter->pdev->dev, "EEH error detected\n");
3169
3170 adapter->eeh_err = true;
3171
3172 netif_device_detach(netdev);
3173
3174 if (netif_running(netdev)) {
3175 rtnl_lock();
3176 be_close(netdev);
3177 rtnl_unlock();
3178 }
3179 be_clear(adapter);
3180
3181 if (state == pci_channel_io_perm_failure)
3182 return PCI_ERS_RESULT_DISCONNECT;
3183
3184 pci_disable_device(pdev);
3185
3186 return PCI_ERS_RESULT_NEED_RESET;
3187 }
3188
3189 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
3190 {
3191 struct be_adapter *adapter = pci_get_drvdata(pdev);
3192 int status;
3193
3194 dev_info(&adapter->pdev->dev, "EEH reset\n");
3195 adapter->eeh_err = false;
3196
3197 status = pci_enable_device(pdev);
3198 if (status)
3199 return PCI_ERS_RESULT_DISCONNECT;
3200
3201 pci_set_master(pdev);
3202 pci_set_power_state(pdev, 0);
3203 pci_restore_state(pdev);
3204
3205 /* Check if card is ok and fw is ready */
3206 status = be_cmd_POST(adapter);
3207 if (status)
3208 return PCI_ERS_RESULT_DISCONNECT;
3209
3210 return PCI_ERS_RESULT_RECOVERED;
3211 }
3212
3213 static void be_eeh_resume(struct pci_dev *pdev)
3214 {
3215 int status = 0;
3216 struct be_adapter *adapter = pci_get_drvdata(pdev);
3217 struct net_device *netdev = adapter->netdev;
3218
3219 dev_info(&adapter->pdev->dev, "EEH resume\n");
3220
3221 pci_save_state(pdev);
3222
3223 /* tell fw we're ready to fire cmds */
3224 status = be_cmd_fw_init(adapter);
3225 if (status)
3226 goto err;
3227
3228 status = be_setup(adapter);
3229 if (status)
3230 goto err;
3231
3232 if (netif_running(netdev)) {
3233 status = be_open(netdev);
3234 if (status)
3235 goto err;
3236 }
3237 netif_device_attach(netdev);
3238 return;
3239 err:
3240 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
3241 }
3242
3243 static struct pci_error_handlers be_eeh_handlers = {
3244 .error_detected = be_eeh_err_detected,
3245 .slot_reset = be_eeh_reset,
3246 .resume = be_eeh_resume,
3247 };
3248
3249 static struct pci_driver be_driver = {
3250 .name = DRV_NAME,
3251 .id_table = be_dev_ids,
3252 .probe = be_probe,
3253 .remove = be_remove,
3254 .suspend = be_suspend,
3255 .resume = be_resume,
3256 .shutdown = be_shutdown,
3257 .err_handler = &be_eeh_handlers
3258 };
3259
3260 static int __init be_init_module(void)
3261 {
3262 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
3263 rx_frag_size != 2048) {
3264 printk(KERN_WARNING DRV_NAME
3265 " : Module param rx_frag_size must be 2048/4096/8192."
3266 " Using 2048\n");
3267 rx_frag_size = 2048;
3268 }
3269
3270 if (num_vfs > 32) {
3271 printk(KERN_WARNING DRV_NAME
3272 " : Module param num_vfs must not be greater than 32."
3273 "Using 32\n");
3274 num_vfs = 32;
3275 }
3276
3277 return pci_register_driver(&be_driver);
3278 }
3279 module_init(be_init_module);
3280
3281 static void __exit be_exit_module(void)
3282 {
3283 pci_unregister_driver(&be_driver);
3284 }
3285 module_exit(be_exit_module);
Linux kernel - Deliverables
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