be2net: fix bug in rx page posting
[linux-2.6.git] / drivers / net / benet / be_main.c
1 /*
2  * Copyright (C) 2005 - 2009 ServerEngines
3  * All rights reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License version 2
7  * as published by the Free Software Foundation.  The full GNU General
8  * Public License is included in this distribution in the file called COPYING.
9  *
10  * Contact Information:
11  * linux-drivers@serverengines.com
12  *
13  * ServerEngines
14  * 209 N. Fair Oaks Ave
15  * Sunnyvale, CA 94085
16  */
17
18 #include "be.h"
19 #include "be_cmds.h"
20 #include <asm/div64.h>
21
22 MODULE_VERSION(DRV_VER);
23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
25 MODULE_AUTHOR("ServerEngines Corporation");
26 MODULE_LICENSE("GPL");
27
28 static unsigned int rx_frag_size = 2048;
29 module_param(rx_frag_size, uint, S_IRUGO);
30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
31
32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
34         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
36         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
37         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
38         { 0 }
39 };
40 MODULE_DEVICE_TABLE(pci, be_dev_ids);
41
42 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
43 {
44         struct be_dma_mem *mem = &q->dma_mem;
45         if (mem->va)
46                 pci_free_consistent(adapter->pdev, mem->size,
47                         mem->va, mem->dma);
48 }
49
50 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
51                 u16 len, u16 entry_size)
52 {
53         struct be_dma_mem *mem = &q->dma_mem;
54
55         memset(q, 0, sizeof(*q));
56         q->len = len;
57         q->entry_size = entry_size;
58         mem->size = len * entry_size;
59         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
60         if (!mem->va)
61                 return -1;
62         memset(mem->va, 0, mem->size);
63         return 0;
64 }
65
66 static void be_intr_set(struct be_adapter *adapter, bool enable)
67 {
68         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
69         u32 reg = ioread32(addr);
70         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
71
72         if (!enabled && enable)
73                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
74         else if (enabled && !enable)
75                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
76         else
77                 return;
78
79         iowrite32(reg, addr);
80 }
81
82 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
83 {
84         u32 val = 0;
85         val |= qid & DB_RQ_RING_ID_MASK;
86         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
87         iowrite32(val, adapter->db + DB_RQ_OFFSET);
88 }
89
90 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
91 {
92         u32 val = 0;
93         val |= qid & DB_TXULP_RING_ID_MASK;
94         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
95         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
96 }
97
98 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
99                 bool arm, bool clear_int, u16 num_popped)
100 {
101         u32 val = 0;
102         val |= qid & DB_EQ_RING_ID_MASK;
103         if (arm)
104                 val |= 1 << DB_EQ_REARM_SHIFT;
105         if (clear_int)
106                 val |= 1 << DB_EQ_CLR_SHIFT;
107         val |= 1 << DB_EQ_EVNT_SHIFT;
108         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
109         iowrite32(val, adapter->db + DB_EQ_OFFSET);
110 }
111
112 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
113 {
114         u32 val = 0;
115         val |= qid & DB_CQ_RING_ID_MASK;
116         if (arm)
117                 val |= 1 << DB_CQ_REARM_SHIFT;
118         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
119         iowrite32(val, adapter->db + DB_CQ_OFFSET);
120 }
121
122 static int be_mac_addr_set(struct net_device *netdev, void *p)
123 {
124         struct be_adapter *adapter = netdev_priv(netdev);
125         struct sockaddr *addr = p;
126         int status = 0;
127
128         if (!is_valid_ether_addr(addr->sa_data))
129                 return -EADDRNOTAVAIL;
130
131         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
132         if (status)
133                 return status;
134
135         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
136                         adapter->if_handle, &adapter->pmac_id);
137         if (!status)
138                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
139
140         return status;
141 }
142
143 void netdev_stats_update(struct be_adapter *adapter)
144 {
145         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
146         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
147         struct be_port_rxf_stats *port_stats =
148                         &rxf_stats->port[adapter->port_num];
149         struct net_device_stats *dev_stats = &adapter->netdev->stats;
150         struct be_erx_stats *erx_stats = &hw_stats->erx;
151
152         dev_stats->rx_packets = port_stats->rx_total_frames;
153         dev_stats->tx_packets = port_stats->tx_unicastframes +
154                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
155         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
156                                 (u64) port_stats->rx_bytes_lsd;
157         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
158                                 (u64) port_stats->tx_bytes_lsd;
159
160         /* bad pkts received */
161         dev_stats->rx_errors = port_stats->rx_crc_errors +
162                 port_stats->rx_alignment_symbol_errors +
163                 port_stats->rx_in_range_errors +
164                 port_stats->rx_out_range_errors +
165                 port_stats->rx_frame_too_long +
166                 port_stats->rx_dropped_too_small +
167                 port_stats->rx_dropped_too_short +
168                 port_stats->rx_dropped_header_too_small +
169                 port_stats->rx_dropped_tcp_length +
170                 port_stats->rx_dropped_runt +
171                 port_stats->rx_tcp_checksum_errs +
172                 port_stats->rx_ip_checksum_errs +
173                 port_stats->rx_udp_checksum_errs;
174
175         /*  no space in linux buffers: best possible approximation */
176         dev_stats->rx_dropped =
177                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
178
179         /* detailed rx errors */
180         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
181                 port_stats->rx_out_range_errors +
182                 port_stats->rx_frame_too_long;
183
184         /* receive ring buffer overflow */
185         dev_stats->rx_over_errors = 0;
186
187         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
188
189         /* frame alignment errors */
190         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
191
192         /* receiver fifo overrun */
193         /* drops_no_pbuf is no per i/f, it's per BE card */
194         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
195                                         port_stats->rx_input_fifo_overflow +
196                                         rxf_stats->rx_drops_no_pbuf;
197         /* receiver missed packetd */
198         dev_stats->rx_missed_errors = 0;
199
200         /*  packet transmit problems */
201         dev_stats->tx_errors = 0;
202
203         /* no space available in linux */
204         dev_stats->tx_dropped = 0;
205
206         dev_stats->multicast = port_stats->rx_multicast_frames;
207         dev_stats->collisions = 0;
208
209         /* detailed tx_errors */
210         dev_stats->tx_aborted_errors = 0;
211         dev_stats->tx_carrier_errors = 0;
212         dev_stats->tx_fifo_errors = 0;
213         dev_stats->tx_heartbeat_errors = 0;
214         dev_stats->tx_window_errors = 0;
215 }
216
217 void be_link_status_update(struct be_adapter *adapter, bool link_up)
218 {
219         struct net_device *netdev = adapter->netdev;
220
221         /* If link came up or went down */
222         if (adapter->link_up != link_up) {
223                 adapter->link_speed = -1;
224                 if (link_up) {
225                         netif_start_queue(netdev);
226                         netif_carrier_on(netdev);
227                         printk(KERN_INFO "%s: Link up\n", netdev->name);
228                 } else {
229                         netif_stop_queue(netdev);
230                         netif_carrier_off(netdev);
231                         printk(KERN_INFO "%s: Link down\n", netdev->name);
232                 }
233                 adapter->link_up = link_up;
234         }
235 }
236
237 /* Update the EQ delay n BE based on the RX frags consumed / sec */
238 static void be_rx_eqd_update(struct be_adapter *adapter)
239 {
240         struct be_eq_obj *rx_eq = &adapter->rx_eq;
241         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
242         ulong now = jiffies;
243         u32 eqd;
244
245         if (!rx_eq->enable_aic)
246                 return;
247
248         /* Wrapped around */
249         if (time_before(now, stats->rx_fps_jiffies)) {
250                 stats->rx_fps_jiffies = now;
251                 return;
252         }
253
254         /* Update once a second */
255         if ((now - stats->rx_fps_jiffies) < HZ)
256                 return;
257
258         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
259                         ((now - stats->rx_fps_jiffies) / HZ);
260
261         stats->rx_fps_jiffies = now;
262         stats->be_prev_rx_frags = stats->be_rx_frags;
263         eqd = stats->be_rx_fps / 110000;
264         eqd = eqd << 3;
265         if (eqd > rx_eq->max_eqd)
266                 eqd = rx_eq->max_eqd;
267         if (eqd < rx_eq->min_eqd)
268                 eqd = rx_eq->min_eqd;
269         if (eqd < 10)
270                 eqd = 0;
271         if (eqd != rx_eq->cur_eqd)
272                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
273
274         rx_eq->cur_eqd = eqd;
275 }
276
277 static struct net_device_stats *be_get_stats(struct net_device *dev)
278 {
279         return &dev->stats;
280 }
281
282 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
283 {
284         u64 rate = bytes;
285
286         do_div(rate, ticks / HZ);
287         rate <<= 3;                     /* bytes/sec -> bits/sec */
288         do_div(rate, 1000000ul);        /* MB/Sec */
289
290         return rate;
291 }
292
293 static void be_tx_rate_update(struct be_adapter *adapter)
294 {
295         struct be_drvr_stats *stats = drvr_stats(adapter);
296         ulong now = jiffies;
297
298         /* Wrapped around? */
299         if (time_before(now, stats->be_tx_jiffies)) {
300                 stats->be_tx_jiffies = now;
301                 return;
302         }
303
304         /* Update tx rate once in two seconds */
305         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
306                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
307                                                   - stats->be_tx_bytes_prev,
308                                                  now - stats->be_tx_jiffies);
309                 stats->be_tx_jiffies = now;
310                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
311         }
312 }
313
314 static void be_tx_stats_update(struct be_adapter *adapter,
315                         u32 wrb_cnt, u32 copied, bool stopped)
316 {
317         struct be_drvr_stats *stats = drvr_stats(adapter);
318         stats->be_tx_reqs++;
319         stats->be_tx_wrbs += wrb_cnt;
320         stats->be_tx_bytes += copied;
321         if (stopped)
322                 stats->be_tx_stops++;
323 }
324
325 /* Determine number of WRB entries needed to xmit data in an skb */
326 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
327 {
328         int cnt = (skb->len > skb->data_len);
329
330         cnt += skb_shinfo(skb)->nr_frags;
331
332         /* to account for hdr wrb */
333         cnt++;
334         if (cnt & 1) {
335                 /* add a dummy to make it an even num */
336                 cnt++;
337                 *dummy = true;
338         } else
339                 *dummy = false;
340         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
341         return cnt;
342 }
343
344 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
345 {
346         wrb->frag_pa_hi = upper_32_bits(addr);
347         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
348         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
349 }
350
351 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
352                 bool vlan, u32 wrb_cnt, u32 len)
353 {
354         memset(hdr, 0, sizeof(*hdr));
355
356         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
357
358         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
359                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
360                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
361                         hdr, skb_shinfo(skb)->gso_size);
362         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
363                 if (is_tcp_pkt(skb))
364                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
365                 else if (is_udp_pkt(skb))
366                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
367         }
368
369         if (vlan && vlan_tx_tag_present(skb)) {
370                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
371                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
372                         hdr, vlan_tx_tag_get(skb));
373         }
374
375         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
376         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
377         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
378         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
379 }
380
381
382 static int make_tx_wrbs(struct be_adapter *adapter,
383                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
384 {
385         u64 busaddr;
386         u32 i, copied = 0;
387         struct pci_dev *pdev = adapter->pdev;
388         struct sk_buff *first_skb = skb;
389         struct be_queue_info *txq = &adapter->tx_obj.q;
390         struct be_eth_wrb *wrb;
391         struct be_eth_hdr_wrb *hdr;
392
393         hdr = queue_head_node(txq);
394         atomic_add(wrb_cnt, &txq->used);
395         queue_head_inc(txq);
396
397         if (skb->len > skb->data_len) {
398                 int len = skb->len - skb->data_len;
399                 busaddr = pci_map_single(pdev, skb->data, len,
400                                          PCI_DMA_TODEVICE);
401                 wrb = queue_head_node(txq);
402                 wrb_fill(wrb, busaddr, len);
403                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
404                 queue_head_inc(txq);
405                 copied += len;
406         }
407
408         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
409                 struct skb_frag_struct *frag =
410                         &skb_shinfo(skb)->frags[i];
411                 busaddr = pci_map_page(pdev, frag->page,
412                                        frag->page_offset,
413                                        frag->size, PCI_DMA_TODEVICE);
414                 wrb = queue_head_node(txq);
415                 wrb_fill(wrb, busaddr, frag->size);
416                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
417                 queue_head_inc(txq);
418                 copied += frag->size;
419         }
420
421         if (dummy_wrb) {
422                 wrb = queue_head_node(txq);
423                 wrb_fill(wrb, 0, 0);
424                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
425                 queue_head_inc(txq);
426         }
427
428         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
429                 wrb_cnt, copied);
430         be_dws_cpu_to_le(hdr, sizeof(*hdr));
431
432         return copied;
433 }
434
435 static netdev_tx_t be_xmit(struct sk_buff *skb,
436                         struct net_device *netdev)
437 {
438         struct be_adapter *adapter = netdev_priv(netdev);
439         struct be_tx_obj *tx_obj = &adapter->tx_obj;
440         struct be_queue_info *txq = &tx_obj->q;
441         u32 wrb_cnt = 0, copied = 0;
442         u32 start = txq->head;
443         bool dummy_wrb, stopped = false;
444
445         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
446
447         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
448         if (copied) {
449                 /* record the sent skb in the sent_skb table */
450                 BUG_ON(tx_obj->sent_skb_list[start]);
451                 tx_obj->sent_skb_list[start] = skb;
452
453                 /* Ensure txq has space for the next skb; Else stop the queue
454                  * *BEFORE* ringing the tx doorbell, so that we serialze the
455                  * tx compls of the current transmit which'll wake up the queue
456                  */
457                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
458                                                                 txq->len) {
459                         netif_stop_queue(netdev);
460                         stopped = true;
461                 }
462
463                 be_txq_notify(adapter, txq->id, wrb_cnt);
464
465                 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
466         } else {
467                 txq->head = start;
468                 dev_kfree_skb_any(skb);
469         }
470         return NETDEV_TX_OK;
471 }
472
473 static int be_change_mtu(struct net_device *netdev, int new_mtu)
474 {
475         struct be_adapter *adapter = netdev_priv(netdev);
476         if (new_mtu < BE_MIN_MTU ||
477                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
478                 dev_info(&adapter->pdev->dev,
479                         "MTU must be between %d and %d bytes\n",
480                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
481                 return -EINVAL;
482         }
483         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
484                         netdev->mtu, new_mtu);
485         netdev->mtu = new_mtu;
486         return 0;
487 }
488
489 /*
490  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
491  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
492  * set the BE in promiscuous VLAN mode.
493  */
494 static int be_vid_config(struct be_adapter *adapter)
495 {
496         u16 vtag[BE_NUM_VLANS_SUPPORTED];
497         u16 ntags = 0, i;
498         int status;
499
500         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
501                 /* Construct VLAN Table to give to HW */
502                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
503                         if (adapter->vlan_tag[i]) {
504                                 vtag[ntags] = cpu_to_le16(i);
505                                 ntags++;
506                         }
507                 }
508                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
509                                         vtag, ntags, 1, 0);
510         } else {
511                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
512                                         NULL, 0, 1, 1);
513         }
514         return status;
515 }
516
517 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
518 {
519         struct be_adapter *adapter = netdev_priv(netdev);
520         struct be_eq_obj *rx_eq = &adapter->rx_eq;
521         struct be_eq_obj *tx_eq = &adapter->tx_eq;
522
523         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
524         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
525         adapter->vlan_grp = grp;
526         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
527         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
528 }
529
530 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
531 {
532         struct be_adapter *adapter = netdev_priv(netdev);
533
534         adapter->num_vlans++;
535         adapter->vlan_tag[vid] = 1;
536
537         be_vid_config(adapter);
538 }
539
540 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
541 {
542         struct be_adapter *adapter = netdev_priv(netdev);
543
544         adapter->num_vlans--;
545         adapter->vlan_tag[vid] = 0;
546
547         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
548         be_vid_config(adapter);
549 }
550
551 static void be_set_multicast_list(struct net_device *netdev)
552 {
553         struct be_adapter *adapter = netdev_priv(netdev);
554
555         if (netdev->flags & IFF_PROMISC) {
556                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
557                 adapter->promiscuous = true;
558                 goto done;
559         }
560
561         /* BE was previously in promiscous mode; disable it */
562         if (adapter->promiscuous) {
563                 adapter->promiscuous = false;
564                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
565         }
566
567         /* Enable multicast promisc if num configured exceeds what we support */
568         if (netdev->flags & IFF_ALLMULTI || netdev->mc_count > BE_MAX_MC) {
569                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0,
570                                 &adapter->mc_cmd_mem);
571                 goto done;
572         }
573
574         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
575                 netdev->mc_count, &adapter->mc_cmd_mem);
576 done:
577         return;
578 }
579
580 static void be_rx_rate_update(struct be_adapter *adapter)
581 {
582         struct be_drvr_stats *stats = drvr_stats(adapter);
583         ulong now = jiffies;
584
585         /* Wrapped around */
586         if (time_before(now, stats->be_rx_jiffies)) {
587                 stats->be_rx_jiffies = now;
588                 return;
589         }
590
591         /* Update the rate once in two seconds */
592         if ((now - stats->be_rx_jiffies) < 2 * HZ)
593                 return;
594
595         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
596                                           - stats->be_rx_bytes_prev,
597                                          now - stats->be_rx_jiffies);
598         stats->be_rx_jiffies = now;
599         stats->be_rx_bytes_prev = stats->be_rx_bytes;
600 }
601
602 static void be_rx_stats_update(struct be_adapter *adapter,
603                 u32 pktsize, u16 numfrags)
604 {
605         struct be_drvr_stats *stats = drvr_stats(adapter);
606
607         stats->be_rx_compl++;
608         stats->be_rx_frags += numfrags;
609         stats->be_rx_bytes += pktsize;
610 }
611
612 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
613 {
614         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
615
616         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
617         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
618         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
619         if (ip_version) {
620                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
621                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
622         }
623         ipv6_chk = (ip_version && (tcpf || udpf));
624
625         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
626 }
627
628 static struct be_rx_page_info *
629 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
630 {
631         struct be_rx_page_info *rx_page_info;
632         struct be_queue_info *rxq = &adapter->rx_obj.q;
633
634         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
635         BUG_ON(!rx_page_info->page);
636
637         if (rx_page_info->last_page_user)
638                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
639                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
640
641         atomic_dec(&rxq->used);
642         return rx_page_info;
643 }
644
645 /* Throwaway the data in the Rx completion */
646 static void be_rx_compl_discard(struct be_adapter *adapter,
647                         struct be_eth_rx_compl *rxcp)
648 {
649         struct be_queue_info *rxq = &adapter->rx_obj.q;
650         struct be_rx_page_info *page_info;
651         u16 rxq_idx, i, num_rcvd;
652
653         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
654         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
655
656         for (i = 0; i < num_rcvd; i++) {
657                 page_info = get_rx_page_info(adapter, rxq_idx);
658                 put_page(page_info->page);
659                 memset(page_info, 0, sizeof(*page_info));
660                 index_inc(&rxq_idx, rxq->len);
661         }
662 }
663
664 /*
665  * skb_fill_rx_data forms a complete skb for an ether frame
666  * indicated by rxcp.
667  */
668 static void skb_fill_rx_data(struct be_adapter *adapter,
669                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
670 {
671         struct be_queue_info *rxq = &adapter->rx_obj.q;
672         struct be_rx_page_info *page_info;
673         u16 rxq_idx, i, num_rcvd, j;
674         u32 pktsize, hdr_len, curr_frag_len, size;
675         u8 *start;
676
677         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
678         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
679         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
680
681         page_info = get_rx_page_info(adapter, rxq_idx);
682
683         start = page_address(page_info->page) + page_info->page_offset;
684         prefetch(start);
685
686         /* Copy data in the first descriptor of this completion */
687         curr_frag_len = min(pktsize, rx_frag_size);
688
689         /* Copy the header portion into skb_data */
690         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
691         memcpy(skb->data, start, hdr_len);
692         skb->len = curr_frag_len;
693         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
694                 /* Complete packet has now been moved to data */
695                 put_page(page_info->page);
696                 skb->data_len = 0;
697                 skb->tail += curr_frag_len;
698         } else {
699                 skb_shinfo(skb)->nr_frags = 1;
700                 skb_shinfo(skb)->frags[0].page = page_info->page;
701                 skb_shinfo(skb)->frags[0].page_offset =
702                                         page_info->page_offset + hdr_len;
703                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
704                 skb->data_len = curr_frag_len - hdr_len;
705                 skb->tail += hdr_len;
706         }
707         memset(page_info, 0, sizeof(*page_info));
708
709         if (pktsize <= rx_frag_size) {
710                 BUG_ON(num_rcvd != 1);
711                 goto done;
712         }
713
714         /* More frags present for this completion */
715         size = pktsize;
716         for (i = 1, j = 0; i < num_rcvd; i++) {
717                 size -= curr_frag_len;
718                 index_inc(&rxq_idx, rxq->len);
719                 page_info = get_rx_page_info(adapter, rxq_idx);
720
721                 curr_frag_len = min(size, rx_frag_size);
722
723                 /* Coalesce all frags from the same physical page in one slot */
724                 if (page_info->page_offset == 0) {
725                         /* Fresh page */
726                         j++;
727                         skb_shinfo(skb)->frags[j].page = page_info->page;
728                         skb_shinfo(skb)->frags[j].page_offset =
729                                                         page_info->page_offset;
730                         skb_shinfo(skb)->frags[j].size = 0;
731                         skb_shinfo(skb)->nr_frags++;
732                 } else {
733                         put_page(page_info->page);
734                 }
735
736                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
737                 skb->len += curr_frag_len;
738                 skb->data_len += curr_frag_len;
739
740                 memset(page_info, 0, sizeof(*page_info));
741         }
742         BUG_ON(j > MAX_SKB_FRAGS);
743
744 done:
745         be_rx_stats_update(adapter, pktsize, num_rcvd);
746         return;
747 }
748
749 /* Process the RX completion indicated by rxcp when GRO is disabled */
750 static void be_rx_compl_process(struct be_adapter *adapter,
751                         struct be_eth_rx_compl *rxcp)
752 {
753         struct sk_buff *skb;
754         u32 vlanf, vid;
755         u8 vtm;
756
757         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
758         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
759
760         /* vlanf could be wrongly set in some cards.
761          * ignore if vtm is not set */
762         if ((adapter->cap & 0x400) && !vtm)
763                 vlanf = 0;
764
765         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
766         if (!skb) {
767                 if (net_ratelimit())
768                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
769                 be_rx_compl_discard(adapter, rxcp);
770                 return;
771         }
772
773         skb_fill_rx_data(adapter, skb, rxcp);
774
775         if (do_pkt_csum(rxcp, adapter->rx_csum))
776                 skb->ip_summed = CHECKSUM_NONE;
777         else
778                 skb->ip_summed = CHECKSUM_UNNECESSARY;
779
780         skb->truesize = skb->len + sizeof(struct sk_buff);
781         skb->protocol = eth_type_trans(skb, adapter->netdev);
782         skb->dev = adapter->netdev;
783
784         if (vlanf) {
785                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
786                         kfree_skb(skb);
787                         return;
788                 }
789                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
790                 vid = be16_to_cpu(vid);
791                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
792         } else {
793                 netif_receive_skb(skb);
794         }
795
796         return;
797 }
798
799 /* Process the RX completion indicated by rxcp when GRO is enabled */
800 static void be_rx_compl_process_gro(struct be_adapter *adapter,
801                         struct be_eth_rx_compl *rxcp)
802 {
803         struct be_rx_page_info *page_info;
804         struct sk_buff *skb = NULL;
805         struct be_queue_info *rxq = &adapter->rx_obj.q;
806         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
807         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
808         u16 i, rxq_idx = 0, vid, j;
809         u8 vtm;
810
811         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
812         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
813         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
814         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
815         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
816
817         /* vlanf could be wrongly set in some cards.
818          * ignore if vtm is not set */
819         if ((adapter->cap & 0x400) && !vtm)
820                 vlanf = 0;
821
822         skb = napi_get_frags(&eq_obj->napi);
823         if (!skb) {
824                 be_rx_compl_discard(adapter, rxcp);
825                 return;
826         }
827
828         remaining = pkt_size;
829         for (i = 0, j = -1; i < num_rcvd; i++) {
830                 page_info = get_rx_page_info(adapter, rxq_idx);
831
832                 curr_frag_len = min(remaining, rx_frag_size);
833
834                 /* Coalesce all frags from the same physical page in one slot */
835                 if (i == 0 || page_info->page_offset == 0) {
836                         /* First frag or Fresh page */
837                         j++;
838                         skb_shinfo(skb)->frags[j].page = page_info->page;
839                         skb_shinfo(skb)->frags[j].page_offset =
840                                                         page_info->page_offset;
841                         skb_shinfo(skb)->frags[j].size = 0;
842                 } else {
843                         put_page(page_info->page);
844                 }
845                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
846
847                 remaining -= curr_frag_len;
848                 index_inc(&rxq_idx, rxq->len);
849                 memset(page_info, 0, sizeof(*page_info));
850         }
851         BUG_ON(j > MAX_SKB_FRAGS);
852
853         skb_shinfo(skb)->nr_frags = j + 1;
854         skb->len = pkt_size;
855         skb->data_len = pkt_size;
856         skb->truesize += pkt_size;
857         skb->ip_summed = CHECKSUM_UNNECESSARY;
858
859         if (likely(!vlanf)) {
860                 napi_gro_frags(&eq_obj->napi);
861         } else {
862                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
863                 vid = be16_to_cpu(vid);
864
865                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
866                         return;
867
868                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
869         }
870
871         be_rx_stats_update(adapter, pkt_size, num_rcvd);
872         return;
873 }
874
875 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
876 {
877         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
878
879         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
880                 return NULL;
881
882         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
883
884         queue_tail_inc(&adapter->rx_obj.cq);
885         return rxcp;
886 }
887
888 /* To reset the valid bit, we need to reset the whole word as
889  * when walking the queue the valid entries are little-endian
890  * and invalid entries are host endian
891  */
892 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
893 {
894         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
895 }
896
897 static inline struct page *be_alloc_pages(u32 size)
898 {
899         gfp_t alloc_flags = GFP_ATOMIC;
900         u32 order = get_order(size);
901         if (order > 0)
902                 alloc_flags |= __GFP_COMP;
903         return  alloc_pages(alloc_flags, order);
904 }
905
906 /*
907  * Allocate a page, split it to fragments of size rx_frag_size and post as
908  * receive buffers to BE
909  */
910 static void be_post_rx_frags(struct be_adapter *adapter)
911 {
912         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
913         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
914         struct be_queue_info *rxq = &adapter->rx_obj.q;
915         struct page *pagep = NULL;
916         struct be_eth_rx_d *rxd;
917         u64 page_dmaaddr = 0, frag_dmaaddr;
918         u32 posted, page_offset = 0;
919
920         page_info = &page_info_tbl[rxq->head];
921         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
922                 if (!pagep) {
923                         pagep = be_alloc_pages(adapter->big_page_size);
924                         if (unlikely(!pagep)) {
925                                 drvr_stats(adapter)->be_ethrx_post_fail++;
926                                 break;
927                         }
928                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
929                                                 adapter->big_page_size,
930                                                 PCI_DMA_FROMDEVICE);
931                         page_info->page_offset = 0;
932                 } else {
933                         get_page(pagep);
934                         page_info->page_offset = page_offset + rx_frag_size;
935                 }
936                 page_offset = page_info->page_offset;
937                 page_info->page = pagep;
938                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
939                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
940
941                 rxd = queue_head_node(rxq);
942                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
943                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
944
945                 /* Any space left in the current big page for another frag? */
946                 if ((page_offset + rx_frag_size + rx_frag_size) >
947                                         adapter->big_page_size) {
948                         pagep = NULL;
949                         page_info->last_page_user = true;
950                 }
951
952                 prev_page_info = page_info;
953                 queue_head_inc(rxq);
954                 page_info = &page_info_tbl[rxq->head];
955         }
956         if (pagep)
957                 prev_page_info->last_page_user = true;
958
959         if (posted) {
960                 atomic_add(posted, &rxq->used);
961                 be_rxq_notify(adapter, rxq->id, posted);
962         } else if (atomic_read(&rxq->used) == 0) {
963                 /* Let be_worker replenish when memory is available */
964                 adapter->rx_post_starved = true;
965         }
966
967         return;
968 }
969
970 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
971 {
972         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
973
974         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
975                 return NULL;
976
977         be_dws_le_to_cpu(txcp, sizeof(*txcp));
978
979         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
980
981         queue_tail_inc(tx_cq);
982         return txcp;
983 }
984
985 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
986 {
987         struct be_queue_info *txq = &adapter->tx_obj.q;
988         struct be_eth_wrb *wrb;
989         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
990         struct sk_buff *sent_skb;
991         u64 busaddr;
992         u16 cur_index, num_wrbs = 0;
993
994         cur_index = txq->tail;
995         sent_skb = sent_skbs[cur_index];
996         BUG_ON(!sent_skb);
997         sent_skbs[cur_index] = NULL;
998         wrb = queue_tail_node(txq);
999         be_dws_le_to_cpu(wrb, sizeof(*wrb));
1000         busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1001         if (busaddr != 0) {
1002                 pci_unmap_single(adapter->pdev, busaddr,
1003                                  wrb->frag_len, PCI_DMA_TODEVICE);
1004         }
1005         num_wrbs++;
1006         queue_tail_inc(txq);
1007
1008         while (cur_index != last_index) {
1009                 cur_index = txq->tail;
1010                 wrb = queue_tail_node(txq);
1011                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1012                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1013                 if (busaddr != 0) {
1014                         pci_unmap_page(adapter->pdev, busaddr,
1015                                        wrb->frag_len, PCI_DMA_TODEVICE);
1016                 }
1017                 num_wrbs++;
1018                 queue_tail_inc(txq);
1019         }
1020
1021         atomic_sub(num_wrbs, &txq->used);
1022
1023         kfree_skb(sent_skb);
1024 }
1025
1026 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1027 {
1028         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1029
1030         if (!eqe->evt)
1031                 return NULL;
1032
1033         eqe->evt = le32_to_cpu(eqe->evt);
1034         queue_tail_inc(&eq_obj->q);
1035         return eqe;
1036 }
1037
1038 static int event_handle(struct be_adapter *adapter,
1039                         struct be_eq_obj *eq_obj)
1040 {
1041         struct be_eq_entry *eqe;
1042         u16 num = 0;
1043
1044         while ((eqe = event_get(eq_obj)) != NULL) {
1045                 eqe->evt = 0;
1046                 num++;
1047         }
1048
1049         /* Deal with any spurious interrupts that come
1050          * without events
1051          */
1052         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1053         if (num)
1054                 napi_schedule(&eq_obj->napi);
1055
1056         return num;
1057 }
1058
1059 /* Just read and notify events without processing them.
1060  * Used at the time of destroying event queues */
1061 static void be_eq_clean(struct be_adapter *adapter,
1062                         struct be_eq_obj *eq_obj)
1063 {
1064         struct be_eq_entry *eqe;
1065         u16 num = 0;
1066
1067         while ((eqe = event_get(eq_obj)) != NULL) {
1068                 eqe->evt = 0;
1069                 num++;
1070         }
1071
1072         if (num)
1073                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1074 }
1075
1076 static void be_rx_q_clean(struct be_adapter *adapter)
1077 {
1078         struct be_rx_page_info *page_info;
1079         struct be_queue_info *rxq = &adapter->rx_obj.q;
1080         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1081         struct be_eth_rx_compl *rxcp;
1082         u16 tail;
1083
1084         /* First cleanup pending rx completions */
1085         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1086                 be_rx_compl_discard(adapter, rxcp);
1087                 be_rx_compl_reset(rxcp);
1088                 be_cq_notify(adapter, rx_cq->id, true, 1);
1089         }
1090
1091         /* Then free posted rx buffer that were not used */
1092         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1093         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1094                 page_info = get_rx_page_info(adapter, tail);
1095                 put_page(page_info->page);
1096                 memset(page_info, 0, sizeof(*page_info));
1097         }
1098         BUG_ON(atomic_read(&rxq->used));
1099 }
1100
1101 static void be_tx_compl_clean(struct be_adapter *adapter)
1102 {
1103         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1104         struct be_queue_info *txq = &adapter->tx_obj.q;
1105         struct be_eth_tx_compl *txcp;
1106         u16 end_idx, cmpl = 0, timeo = 0;
1107
1108         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1109         do {
1110                 while ((txcp = be_tx_compl_get(tx_cq))) {
1111                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1112                                         wrb_index, txcp);
1113                         be_tx_compl_process(adapter, end_idx);
1114                         cmpl++;
1115                 }
1116                 if (cmpl) {
1117                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1118                         cmpl = 0;
1119                 }
1120
1121                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1122                         break;
1123
1124                 mdelay(1);
1125         } while (true);
1126
1127         if (atomic_read(&txq->used))
1128                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1129                         atomic_read(&txq->used));
1130 }
1131
1132 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1133 {
1134         struct be_queue_info *q;
1135
1136         q = &adapter->mcc_obj.q;
1137         if (q->created)
1138                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1139         be_queue_free(adapter, q);
1140
1141         q = &adapter->mcc_obj.cq;
1142         if (q->created)
1143                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1144         be_queue_free(adapter, q);
1145 }
1146
1147 /* Must be called only after TX qs are created as MCC shares TX EQ */
1148 static int be_mcc_queues_create(struct be_adapter *adapter)
1149 {
1150         struct be_queue_info *q, *cq;
1151
1152         /* Alloc MCC compl queue */
1153         cq = &adapter->mcc_obj.cq;
1154         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1155                         sizeof(struct be_mcc_compl)))
1156                 goto err;
1157
1158         /* Ask BE to create MCC compl queue; share TX's eq */
1159         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1160                 goto mcc_cq_free;
1161
1162         /* Alloc MCC queue */
1163         q = &adapter->mcc_obj.q;
1164         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1165                 goto mcc_cq_destroy;
1166
1167         /* Ask BE to create MCC queue */
1168         if (be_cmd_mccq_create(adapter, q, cq))
1169                 goto mcc_q_free;
1170
1171         return 0;
1172
1173 mcc_q_free:
1174         be_queue_free(adapter, q);
1175 mcc_cq_destroy:
1176         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1177 mcc_cq_free:
1178         be_queue_free(adapter, cq);
1179 err:
1180         return -1;
1181 }
1182
1183 static void be_tx_queues_destroy(struct be_adapter *adapter)
1184 {
1185         struct be_queue_info *q;
1186
1187         q = &adapter->tx_obj.q;
1188         if (q->created)
1189                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1190         be_queue_free(adapter, q);
1191
1192         q = &adapter->tx_obj.cq;
1193         if (q->created)
1194                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1195         be_queue_free(adapter, q);
1196
1197         /* Clear any residual events */
1198         be_eq_clean(adapter, &adapter->tx_eq);
1199
1200         q = &adapter->tx_eq.q;
1201         if (q->created)
1202                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1203         be_queue_free(adapter, q);
1204 }
1205
1206 static int be_tx_queues_create(struct be_adapter *adapter)
1207 {
1208         struct be_queue_info *eq, *q, *cq;
1209
1210         adapter->tx_eq.max_eqd = 0;
1211         adapter->tx_eq.min_eqd = 0;
1212         adapter->tx_eq.cur_eqd = 96;
1213         adapter->tx_eq.enable_aic = false;
1214         /* Alloc Tx Event queue */
1215         eq = &adapter->tx_eq.q;
1216         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1217                 return -1;
1218
1219         /* Ask BE to create Tx Event queue */
1220         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1221                 goto tx_eq_free;
1222         /* Alloc TX eth compl queue */
1223         cq = &adapter->tx_obj.cq;
1224         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1225                         sizeof(struct be_eth_tx_compl)))
1226                 goto tx_eq_destroy;
1227
1228         /* Ask BE to create Tx eth compl queue */
1229         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1230                 goto tx_cq_free;
1231
1232         /* Alloc TX eth queue */
1233         q = &adapter->tx_obj.q;
1234         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1235                 goto tx_cq_destroy;
1236
1237         /* Ask BE to create Tx eth queue */
1238         if (be_cmd_txq_create(adapter, q, cq))
1239                 goto tx_q_free;
1240         return 0;
1241
1242 tx_q_free:
1243         be_queue_free(adapter, q);
1244 tx_cq_destroy:
1245         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1246 tx_cq_free:
1247         be_queue_free(adapter, cq);
1248 tx_eq_destroy:
1249         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1250 tx_eq_free:
1251         be_queue_free(adapter, eq);
1252         return -1;
1253 }
1254
1255 static void be_rx_queues_destroy(struct be_adapter *adapter)
1256 {
1257         struct be_queue_info *q;
1258
1259         q = &adapter->rx_obj.q;
1260         if (q->created) {
1261                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1262                 be_rx_q_clean(adapter);
1263         }
1264         be_queue_free(adapter, q);
1265
1266         q = &adapter->rx_obj.cq;
1267         if (q->created)
1268                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1269         be_queue_free(adapter, q);
1270
1271         /* Clear any residual events */
1272         be_eq_clean(adapter, &adapter->rx_eq);
1273
1274         q = &adapter->rx_eq.q;
1275         if (q->created)
1276                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1277         be_queue_free(adapter, q);
1278 }
1279
1280 static int be_rx_queues_create(struct be_adapter *adapter)
1281 {
1282         struct be_queue_info *eq, *q, *cq;
1283         int rc;
1284
1285         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1286         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1287         adapter->rx_eq.min_eqd = 0;
1288         adapter->rx_eq.cur_eqd = 0;
1289         adapter->rx_eq.enable_aic = true;
1290
1291         /* Alloc Rx Event queue */
1292         eq = &adapter->rx_eq.q;
1293         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1294                                 sizeof(struct be_eq_entry));
1295         if (rc)
1296                 return rc;
1297
1298         /* Ask BE to create Rx Event queue */
1299         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1300         if (rc)
1301                 goto rx_eq_free;
1302
1303         /* Alloc RX eth compl queue */
1304         cq = &adapter->rx_obj.cq;
1305         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1306                         sizeof(struct be_eth_rx_compl));
1307         if (rc)
1308                 goto rx_eq_destroy;
1309
1310         /* Ask BE to create Rx eth compl queue */
1311         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1312         if (rc)
1313                 goto rx_cq_free;
1314
1315         /* Alloc RX eth queue */
1316         q = &adapter->rx_obj.q;
1317         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1318         if (rc)
1319                 goto rx_cq_destroy;
1320
1321         /* Ask BE to create Rx eth queue */
1322         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1323                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1324         if (rc)
1325                 goto rx_q_free;
1326
1327         return 0;
1328 rx_q_free:
1329         be_queue_free(adapter, q);
1330 rx_cq_destroy:
1331         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1332 rx_cq_free:
1333         be_queue_free(adapter, cq);
1334 rx_eq_destroy:
1335         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1336 rx_eq_free:
1337         be_queue_free(adapter, eq);
1338         return rc;
1339 }
1340
1341 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1342 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1343 {
1344         return eq_id - 8 * be_pci_func(adapter);
1345 }
1346
1347 static irqreturn_t be_intx(int irq, void *dev)
1348 {
1349         struct be_adapter *adapter = dev;
1350         int isr;
1351
1352         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1353                         be_pci_func(adapter) * CEV_ISR_SIZE);
1354         if (!isr)
1355                 return IRQ_NONE;
1356
1357         event_handle(adapter, &adapter->tx_eq);
1358         event_handle(adapter, &adapter->rx_eq);
1359
1360         return IRQ_HANDLED;
1361 }
1362
1363 static irqreturn_t be_msix_rx(int irq, void *dev)
1364 {
1365         struct be_adapter *adapter = dev;
1366
1367         event_handle(adapter, &adapter->rx_eq);
1368
1369         return IRQ_HANDLED;
1370 }
1371
1372 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1373 {
1374         struct be_adapter *adapter = dev;
1375
1376         event_handle(adapter, &adapter->tx_eq);
1377
1378         return IRQ_HANDLED;
1379 }
1380
1381 static inline bool do_gro(struct be_adapter *adapter,
1382                         struct be_eth_rx_compl *rxcp)
1383 {
1384         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1385         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1386
1387         if (err)
1388                 drvr_stats(adapter)->be_rxcp_err++;
1389
1390         return (tcp_frame && !err) ? true : false;
1391 }
1392
1393 int be_poll_rx(struct napi_struct *napi, int budget)
1394 {
1395         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1396         struct be_adapter *adapter =
1397                 container_of(rx_eq, struct be_adapter, rx_eq);
1398         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1399         struct be_eth_rx_compl *rxcp;
1400         u32 work_done;
1401
1402         adapter->stats.drvr_stats.be_rx_polls++;
1403         for (work_done = 0; work_done < budget; work_done++) {
1404                 rxcp = be_rx_compl_get(adapter);
1405                 if (!rxcp)
1406                         break;
1407
1408                 if (do_gro(adapter, rxcp))
1409                         be_rx_compl_process_gro(adapter, rxcp);
1410                 else
1411                         be_rx_compl_process(adapter, rxcp);
1412
1413                 be_rx_compl_reset(rxcp);
1414         }
1415
1416         /* Refill the queue */
1417         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1418                 be_post_rx_frags(adapter);
1419
1420         /* All consumed */
1421         if (work_done < budget) {
1422                 napi_complete(napi);
1423                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1424         } else {
1425                 /* More to be consumed; continue with interrupts disabled */
1426                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1427         }
1428         return work_done;
1429 }
1430
1431 void be_process_tx(struct be_adapter *adapter)
1432 {
1433         struct be_queue_info *txq = &adapter->tx_obj.q;
1434         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1435         struct be_eth_tx_compl *txcp;
1436         u32 num_cmpl = 0;
1437         u16 end_idx;
1438
1439         while ((txcp = be_tx_compl_get(tx_cq))) {
1440                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1441                                         wrb_index, txcp);
1442                 be_tx_compl_process(adapter, end_idx);
1443                 num_cmpl++;
1444         }
1445
1446         if (num_cmpl) {
1447                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1448
1449                 /* As Tx wrbs have been freed up, wake up netdev queue if
1450                  * it was stopped due to lack of tx wrbs.
1451                  */
1452                 if (netif_queue_stopped(adapter->netdev) &&
1453                         atomic_read(&txq->used) < txq->len / 2) {
1454                         netif_wake_queue(adapter->netdev);
1455                 }
1456
1457                 drvr_stats(adapter)->be_tx_events++;
1458                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1459         }
1460 }
1461
1462 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1463  * For TX/MCC we don't honour budget; consume everything
1464  */
1465 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1466 {
1467         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1468         struct be_adapter *adapter =
1469                 container_of(tx_eq, struct be_adapter, tx_eq);
1470
1471         napi_complete(napi);
1472
1473         be_process_tx(adapter);
1474
1475         be_process_mcc(adapter);
1476
1477         return 1;
1478 }
1479
1480 static void be_worker(struct work_struct *work)
1481 {
1482         struct be_adapter *adapter =
1483                 container_of(work, struct be_adapter, work.work);
1484
1485         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1486
1487         /* Set EQ delay */
1488         be_rx_eqd_update(adapter);
1489
1490         be_tx_rate_update(adapter);
1491         be_rx_rate_update(adapter);
1492
1493         if (adapter->rx_post_starved) {
1494                 adapter->rx_post_starved = false;
1495                 be_post_rx_frags(adapter);
1496         }
1497
1498         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1499 }
1500
1501 static void be_msix_disable(struct be_adapter *adapter)
1502 {
1503         if (adapter->msix_enabled) {
1504                 pci_disable_msix(adapter->pdev);
1505                 adapter->msix_enabled = false;
1506         }
1507 }
1508
1509 static void be_msix_enable(struct be_adapter *adapter)
1510 {
1511         int i, status;
1512
1513         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1514                 adapter->msix_entries[i].entry = i;
1515
1516         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1517                 BE_NUM_MSIX_VECTORS);
1518         if (status == 0)
1519                 adapter->msix_enabled = true;
1520         return;
1521 }
1522
1523 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1524 {
1525         return adapter->msix_entries[
1526                         be_evt_bit_get(adapter, eq_id)].vector;
1527 }
1528
1529 static int be_request_irq(struct be_adapter *adapter,
1530                 struct be_eq_obj *eq_obj,
1531                 void *handler, char *desc)
1532 {
1533         struct net_device *netdev = adapter->netdev;
1534         int vec;
1535
1536         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1537         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1538         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1539 }
1540
1541 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1542 {
1543         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1544         free_irq(vec, adapter);
1545 }
1546
1547 static int be_msix_register(struct be_adapter *adapter)
1548 {
1549         int status;
1550
1551         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1552         if (status)
1553                 goto err;
1554
1555         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1556         if (status)
1557                 goto free_tx_irq;
1558
1559         return 0;
1560
1561 free_tx_irq:
1562         be_free_irq(adapter, &adapter->tx_eq);
1563 err:
1564         dev_warn(&adapter->pdev->dev,
1565                 "MSIX Request IRQ failed - err %d\n", status);
1566         pci_disable_msix(adapter->pdev);
1567         adapter->msix_enabled = false;
1568         return status;
1569 }
1570
1571 static int be_irq_register(struct be_adapter *adapter)
1572 {
1573         struct net_device *netdev = adapter->netdev;
1574         int status;
1575
1576         if (adapter->msix_enabled) {
1577                 status = be_msix_register(adapter);
1578                 if (status == 0)
1579                         goto done;
1580         }
1581
1582         /* INTx */
1583         netdev->irq = adapter->pdev->irq;
1584         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1585                         adapter);
1586         if (status) {
1587                 dev_err(&adapter->pdev->dev,
1588                         "INTx request IRQ failed - err %d\n", status);
1589                 return status;
1590         }
1591 done:
1592         adapter->isr_registered = true;
1593         return 0;
1594 }
1595
1596 static void be_irq_unregister(struct be_adapter *adapter)
1597 {
1598         struct net_device *netdev = adapter->netdev;
1599
1600         if (!adapter->isr_registered)
1601                 return;
1602
1603         /* INTx */
1604         if (!adapter->msix_enabled) {
1605                 free_irq(netdev->irq, adapter);
1606                 goto done;
1607         }
1608
1609         /* MSIx */
1610         be_free_irq(adapter, &adapter->tx_eq);
1611         be_free_irq(adapter, &adapter->rx_eq);
1612 done:
1613         adapter->isr_registered = false;
1614         return;
1615 }
1616
1617 static int be_open(struct net_device *netdev)
1618 {
1619         struct be_adapter *adapter = netdev_priv(netdev);
1620         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1621         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1622         bool link_up;
1623         int status;
1624         u8 mac_speed;
1625         u16 link_speed;
1626
1627         /* First time posting */
1628         be_post_rx_frags(adapter);
1629
1630         napi_enable(&rx_eq->napi);
1631         napi_enable(&tx_eq->napi);
1632
1633         be_irq_register(adapter);
1634
1635         be_intr_set(adapter, true);
1636
1637         /* The evt queues are created in unarmed state; arm them */
1638         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1639         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1640
1641         /* Rx compl queue may be in unarmed state; rearm it */
1642         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1643
1644         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1645                         &link_speed);
1646         if (status)
1647                 goto ret_sts;
1648         be_link_status_update(adapter, link_up);
1649
1650         status = be_vid_config(adapter);
1651         if (status)
1652                 goto ret_sts;
1653
1654         status = be_cmd_set_flow_control(adapter,
1655                                         adapter->tx_fc, adapter->rx_fc);
1656         if (status)
1657                 goto ret_sts;
1658
1659         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1660 ret_sts:
1661         return status;
1662 }
1663
1664 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1665 {
1666         struct be_dma_mem cmd;
1667         int status = 0;
1668         u8 mac[ETH_ALEN];
1669
1670         memset(mac, 0, ETH_ALEN);
1671
1672         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1673         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1674         if (cmd.va == NULL)
1675                 return -1;
1676         memset(cmd.va, 0, cmd.size);
1677
1678         if (enable) {
1679                 status = pci_write_config_dword(adapter->pdev,
1680                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1681                 if (status) {
1682                         dev_err(&adapter->pdev->dev,
1683                                 "Could not enable Wake-on-lan \n");
1684                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1685                                         cmd.dma);
1686                         return status;
1687                 }
1688                 status = be_cmd_enable_magic_wol(adapter,
1689                                 adapter->netdev->dev_addr, &cmd);
1690                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1691                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1692         } else {
1693                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1694                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1695                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1696         }
1697
1698         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1699         return status;
1700 }
1701
1702 static int be_setup(struct be_adapter *adapter)
1703 {
1704         struct net_device *netdev = adapter->netdev;
1705         u32 cap_flags, en_flags;
1706         int status;
1707
1708         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1709                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1710                         BE_IF_FLAGS_PROMISCUOUS |
1711                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1712         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1713                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1714
1715         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1716                         netdev->dev_addr, false/* pmac_invalid */,
1717                         &adapter->if_handle, &adapter->pmac_id);
1718         if (status != 0)
1719                 goto do_none;
1720
1721         status = be_tx_queues_create(adapter);
1722         if (status != 0)
1723                 goto if_destroy;
1724
1725         status = be_rx_queues_create(adapter);
1726         if (status != 0)
1727                 goto tx_qs_destroy;
1728
1729         status = be_mcc_queues_create(adapter);
1730         if (status != 0)
1731                 goto rx_qs_destroy;
1732
1733         adapter->link_speed = -1;
1734
1735         return 0;
1736
1737 rx_qs_destroy:
1738         be_rx_queues_destroy(adapter);
1739 tx_qs_destroy:
1740         be_tx_queues_destroy(adapter);
1741 if_destroy:
1742         be_cmd_if_destroy(adapter, adapter->if_handle);
1743 do_none:
1744         return status;
1745 }
1746
1747 static int be_clear(struct be_adapter *adapter)
1748 {
1749         be_mcc_queues_destroy(adapter);
1750         be_rx_queues_destroy(adapter);
1751         be_tx_queues_destroy(adapter);
1752
1753         be_cmd_if_destroy(adapter, adapter->if_handle);
1754
1755         /* tell fw we're done with firing cmds */
1756         be_cmd_fw_clean(adapter);
1757         return 0;
1758 }
1759
1760 static int be_close(struct net_device *netdev)
1761 {
1762         struct be_adapter *adapter = netdev_priv(netdev);
1763         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1764         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1765         int vec;
1766
1767         cancel_delayed_work_sync(&adapter->work);
1768
1769         netif_stop_queue(netdev);
1770         netif_carrier_off(netdev);
1771         adapter->link_up = false;
1772
1773         be_intr_set(adapter, false);
1774
1775         if (adapter->msix_enabled) {
1776                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1777                 synchronize_irq(vec);
1778                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1779                 synchronize_irq(vec);
1780         } else {
1781                 synchronize_irq(netdev->irq);
1782         }
1783         be_irq_unregister(adapter);
1784
1785         napi_disable(&rx_eq->napi);
1786         napi_disable(&tx_eq->napi);
1787
1788         /* Wait for all pending tx completions to arrive so that
1789          * all tx skbs are freed.
1790          */
1791         be_tx_compl_clean(adapter);
1792
1793         return 0;
1794 }
1795
1796 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1797 char flash_cookie[2][16] =      {"*** SE FLAS",
1798                                 "H DIRECTORY *** "};
1799
1800 static bool be_flash_redboot(struct be_adapter *adapter,
1801                         const u8 *p)
1802 {
1803         u32 crc_offset;
1804         u8 flashed_crc[4];
1805         int status;
1806         crc_offset = FLASH_REDBOOT_START + FLASH_REDBOOT_IMAGE_MAX_SIZE - 4
1807                         + sizeof(struct flash_file_hdr) - 32*1024;
1808         p += crc_offset;
1809         status = be_cmd_get_flash_crc(adapter, flashed_crc);
1810         if (status) {
1811                 dev_err(&adapter->pdev->dev,
1812                 "could not get crc from flash, not flashing redboot\n");
1813                 return false;
1814         }
1815
1816         /*update redboot only if crc does not match*/
1817         if (!memcmp(flashed_crc, p, 4))
1818                 return false;
1819         else
1820                 return true;
1821
1822 }
1823
1824 static int be_flash_image(struct be_adapter *adapter,
1825                         const struct firmware *fw,
1826                         struct be_dma_mem *flash_cmd, u32 flash_type)
1827 {
1828         int status;
1829         u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1830         int num_bytes;
1831         const u8 *p = fw->data;
1832         struct be_cmd_write_flashrom *req = flash_cmd->va;
1833
1834         switch (flash_type) {
1835         case FLASHROM_TYPE_ISCSI_ACTIVE:
1836                 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1837                 image_size = FLASH_IMAGE_MAX_SIZE;
1838                 break;
1839         case FLASHROM_TYPE_ISCSI_BACKUP:
1840                 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1841                 image_size = FLASH_IMAGE_MAX_SIZE;
1842                 break;
1843         case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1844                 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1845                 image_size = FLASH_IMAGE_MAX_SIZE;
1846                 break;
1847         case FLASHROM_TYPE_FCOE_FW_BACKUP:
1848                 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1849                 image_size = FLASH_IMAGE_MAX_SIZE;
1850                 break;
1851         case FLASHROM_TYPE_BIOS:
1852                 image_offset = FLASH_iSCSI_BIOS_START;
1853                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1854                 break;
1855         case FLASHROM_TYPE_FCOE_BIOS:
1856                 image_offset = FLASH_FCoE_BIOS_START;
1857                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1858                 break;
1859         case FLASHROM_TYPE_PXE_BIOS:
1860                 image_offset = FLASH_PXE_BIOS_START;
1861                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1862                 break;
1863         case FLASHROM_TYPE_REDBOOT:
1864                 if (!be_flash_redboot(adapter, fw->data))
1865                         return 0;
1866                 image_offset = FLASH_REDBOOT_ISM_START;
1867                 image_size = FLASH_REDBOOT_IMAGE_MAX_SIZE;
1868                 break;
1869         default:
1870                 return 0;
1871         }
1872
1873         p += sizeof(struct flash_file_hdr) + image_offset;
1874         if (p + image_size > fw->data + fw->size)
1875                 return -1;
1876
1877         total_bytes = image_size;
1878
1879         while (total_bytes) {
1880                 if (total_bytes > 32*1024)
1881                         num_bytes = 32*1024;
1882                 else
1883                         num_bytes = total_bytes;
1884                 total_bytes -= num_bytes;
1885
1886                 if (!total_bytes)
1887                         flash_op = FLASHROM_OPER_FLASH;
1888                 else
1889                         flash_op = FLASHROM_OPER_SAVE;
1890                 memcpy(req->params.data_buf, p, num_bytes);
1891                 p += num_bytes;
1892                 status = be_cmd_write_flashrom(adapter, flash_cmd,
1893                                 flash_type, flash_op, num_bytes);
1894                 if (status) {
1895                         dev_err(&adapter->pdev->dev,
1896                         "cmd to write to flash rom failed. type/op %d/%d\n",
1897                         flash_type, flash_op);
1898                         return -1;
1899                 }
1900                 yield();
1901         }
1902
1903         return 0;
1904 }
1905
1906 int be_load_fw(struct be_adapter *adapter, u8 *func)
1907 {
1908         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1909         const struct firmware *fw;
1910         struct flash_file_hdr *fhdr;
1911         struct flash_section_info *fsec = NULL;
1912         struct be_dma_mem flash_cmd;
1913         int status;
1914         const u8 *p;
1915         bool entry_found = false;
1916         int flash_type;
1917         char fw_ver[FW_VER_LEN];
1918         char fw_cfg;
1919
1920         status = be_cmd_get_fw_ver(adapter, fw_ver);
1921         if (status)
1922                 return status;
1923
1924         fw_cfg = *(fw_ver + 2);
1925         if (fw_cfg == '0')
1926                 fw_cfg = '1';
1927         strcpy(fw_file, func);
1928
1929         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1930         if (status)
1931                 goto fw_exit;
1932
1933         p = fw->data;
1934         fhdr = (struct flash_file_hdr *) p;
1935         if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1936                 dev_err(&adapter->pdev->dev,
1937                         "Firmware(%s) load error (signature did not match)\n",
1938                                 fw_file);
1939                 status = -1;
1940                 goto fw_exit;
1941         }
1942
1943         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1944
1945         p += sizeof(struct flash_file_hdr);
1946         while (p < (fw->data + fw->size)) {
1947                 fsec = (struct flash_section_info *)p;
1948                 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1949                         entry_found = true;
1950                         break;
1951                 }
1952                 p += 32;
1953         }
1954
1955         if (!entry_found) {
1956                 status = -1;
1957                 dev_err(&adapter->pdev->dev,
1958                         "Flash cookie not found in firmware image\n");
1959                 goto fw_exit;
1960         }
1961
1962         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1963         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1964                                         &flash_cmd.dma);
1965         if (!flash_cmd.va) {
1966                 status = -ENOMEM;
1967                 dev_err(&adapter->pdev->dev,
1968                         "Memory allocation failure while flashing\n");
1969                 goto fw_exit;
1970         }
1971
1972         for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1973                 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1974                 status = be_flash_image(adapter, fw, &flash_cmd,
1975                                 flash_type);
1976                 if (status)
1977                         break;
1978         }
1979
1980         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1981                                 flash_cmd.dma);
1982         if (status) {
1983                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1984                 goto fw_exit;
1985         }
1986
1987         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
1988
1989 fw_exit:
1990         release_firmware(fw);
1991         return status;
1992 }
1993
1994 static struct net_device_ops be_netdev_ops = {
1995         .ndo_open               = be_open,
1996         .ndo_stop               = be_close,
1997         .ndo_start_xmit         = be_xmit,
1998         .ndo_get_stats          = be_get_stats,
1999         .ndo_set_rx_mode        = be_set_multicast_list,
2000         .ndo_set_mac_address    = be_mac_addr_set,
2001         .ndo_change_mtu         = be_change_mtu,
2002         .ndo_validate_addr      = eth_validate_addr,
2003         .ndo_vlan_rx_register   = be_vlan_register,
2004         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2005         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2006 };
2007
2008 static void be_netdev_init(struct net_device *netdev)
2009 {
2010         struct be_adapter *adapter = netdev_priv(netdev);
2011
2012         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2013                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2014                 NETIF_F_GRO;
2015
2016         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2017
2018         netdev->flags |= IFF_MULTICAST;
2019
2020         adapter->rx_csum = true;
2021
2022         /* Default settings for Rx and Tx flow control */
2023         adapter->rx_fc = true;
2024         adapter->tx_fc = true;
2025
2026         netif_set_gso_max_size(netdev, 65535);
2027
2028         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2029
2030         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2031
2032         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2033                 BE_NAPI_WEIGHT);
2034         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2035                 BE_NAPI_WEIGHT);
2036
2037         netif_carrier_off(netdev);
2038         netif_stop_queue(netdev);
2039 }
2040
2041 static void be_unmap_pci_bars(struct be_adapter *adapter)
2042 {
2043         if (adapter->csr)
2044                 iounmap(adapter->csr);
2045         if (adapter->db)
2046                 iounmap(adapter->db);
2047         if (adapter->pcicfg)
2048                 iounmap(adapter->pcicfg);
2049 }
2050
2051 static int be_map_pci_bars(struct be_adapter *adapter)
2052 {
2053         u8 __iomem *addr;
2054
2055         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2056                         pci_resource_len(adapter->pdev, 2));
2057         if (addr == NULL)
2058                 return -ENOMEM;
2059         adapter->csr = addr;
2060
2061         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2062                         128 * 1024);
2063         if (addr == NULL)
2064                 goto pci_map_err;
2065         adapter->db = addr;
2066
2067         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
2068                         pci_resource_len(adapter->pdev, 1));
2069         if (addr == NULL)
2070                 goto pci_map_err;
2071         adapter->pcicfg = addr;
2072
2073         return 0;
2074 pci_map_err:
2075         be_unmap_pci_bars(adapter);
2076         return -ENOMEM;
2077 }
2078
2079
2080 static void be_ctrl_cleanup(struct be_adapter *adapter)
2081 {
2082         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2083
2084         be_unmap_pci_bars(adapter);
2085
2086         if (mem->va)
2087                 pci_free_consistent(adapter->pdev, mem->size,
2088                         mem->va, mem->dma);
2089
2090         mem = &adapter->mc_cmd_mem;
2091         if (mem->va)
2092                 pci_free_consistent(adapter->pdev, mem->size,
2093                         mem->va, mem->dma);
2094 }
2095
2096 static int be_ctrl_init(struct be_adapter *adapter)
2097 {
2098         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2099         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2100         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2101         int status;
2102
2103         status = be_map_pci_bars(adapter);
2104         if (status)
2105                 goto done;
2106
2107         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2108         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2109                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2110         if (!mbox_mem_alloc->va) {
2111                 status = -ENOMEM;
2112                 goto unmap_pci_bars;
2113         }
2114
2115         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2116         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2117         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2118         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2119
2120         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2121         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2122                         &mc_cmd_mem->dma);
2123         if (mc_cmd_mem->va == NULL) {
2124                 status = -ENOMEM;
2125                 goto free_mbox;
2126         }
2127         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2128
2129         spin_lock_init(&adapter->mbox_lock);
2130         spin_lock_init(&adapter->mcc_lock);
2131         spin_lock_init(&adapter->mcc_cq_lock);
2132
2133         return 0;
2134
2135 free_mbox:
2136         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2137                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2138
2139 unmap_pci_bars:
2140         be_unmap_pci_bars(adapter);
2141
2142 done:
2143         return status;
2144 }
2145
2146 static void be_stats_cleanup(struct be_adapter *adapter)
2147 {
2148         struct be_stats_obj *stats = &adapter->stats;
2149         struct be_dma_mem *cmd = &stats->cmd;
2150
2151         if (cmd->va)
2152                 pci_free_consistent(adapter->pdev, cmd->size,
2153                         cmd->va, cmd->dma);
2154 }
2155
2156 static int be_stats_init(struct be_adapter *adapter)
2157 {
2158         struct be_stats_obj *stats = &adapter->stats;
2159         struct be_dma_mem *cmd = &stats->cmd;
2160
2161         cmd->size = sizeof(struct be_cmd_req_get_stats);
2162         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2163         if (cmd->va == NULL)
2164                 return -1;
2165         return 0;
2166 }
2167
2168 static void __devexit be_remove(struct pci_dev *pdev)
2169 {
2170         struct be_adapter *adapter = pci_get_drvdata(pdev);
2171
2172         if (!adapter)
2173                 return;
2174
2175         unregister_netdev(adapter->netdev);
2176
2177         be_clear(adapter);
2178
2179         be_stats_cleanup(adapter);
2180
2181         be_ctrl_cleanup(adapter);
2182
2183         be_msix_disable(adapter);
2184
2185         pci_set_drvdata(pdev, NULL);
2186         pci_release_regions(pdev);
2187         pci_disable_device(pdev);
2188
2189         free_netdev(adapter->netdev);
2190 }
2191
2192 static int be_get_config(struct be_adapter *adapter)
2193 {
2194         int status;
2195         u8 mac[ETH_ALEN];
2196
2197         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2198         if (status)
2199                 return status;
2200
2201         status = be_cmd_query_fw_cfg(adapter,
2202                                 &adapter->port_num, &adapter->cap);
2203         if (status)
2204                 return status;
2205
2206         memset(mac, 0, ETH_ALEN);
2207         status = be_cmd_mac_addr_query(adapter, mac,
2208                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2209         if (status)
2210                 return status;
2211
2212         if (!is_valid_ether_addr(mac))
2213                 return -EADDRNOTAVAIL;
2214
2215         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2216         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2217
2218         return 0;
2219 }
2220
2221 static int __devinit be_probe(struct pci_dev *pdev,
2222                         const struct pci_device_id *pdev_id)
2223 {
2224         int status = 0;
2225         struct be_adapter *adapter;
2226         struct net_device *netdev;
2227
2228         status = pci_enable_device(pdev);
2229         if (status)
2230                 goto do_none;
2231
2232         status = pci_request_regions(pdev, DRV_NAME);
2233         if (status)
2234                 goto disable_dev;
2235         pci_set_master(pdev);
2236
2237         netdev = alloc_etherdev(sizeof(struct be_adapter));
2238         if (netdev == NULL) {
2239                 status = -ENOMEM;
2240                 goto rel_reg;
2241         }
2242         adapter = netdev_priv(netdev);
2243         adapter->pdev = pdev;
2244         pci_set_drvdata(pdev, adapter);
2245         adapter->netdev = netdev;
2246         be_netdev_init(netdev);
2247         SET_NETDEV_DEV(netdev, &pdev->dev);
2248
2249         be_msix_enable(adapter);
2250
2251         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2252         if (!status) {
2253                 netdev->features |= NETIF_F_HIGHDMA;
2254         } else {
2255                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2256                 if (status) {
2257                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2258                         goto free_netdev;
2259                 }
2260         }
2261
2262         status = be_ctrl_init(adapter);
2263         if (status)
2264                 goto free_netdev;
2265
2266         /* sync up with fw's ready state */
2267         status = be_cmd_POST(adapter);
2268         if (status)
2269                 goto ctrl_clean;
2270
2271         /* tell fw we're ready to fire cmds */
2272         status = be_cmd_fw_init(adapter);
2273         if (status)
2274                 goto ctrl_clean;
2275
2276         status = be_cmd_reset_function(adapter);
2277         if (status)
2278                 goto ctrl_clean;
2279
2280         status = be_stats_init(adapter);
2281         if (status)
2282                 goto ctrl_clean;
2283
2284         status = be_get_config(adapter);
2285         if (status)
2286                 goto stats_clean;
2287
2288         INIT_DELAYED_WORK(&adapter->work, be_worker);
2289
2290         status = be_setup(adapter);
2291         if (status)
2292                 goto stats_clean;
2293
2294         status = register_netdev(netdev);
2295         if (status != 0)
2296                 goto unsetup;
2297
2298         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2299         return 0;
2300
2301 unsetup:
2302         be_clear(adapter);
2303 stats_clean:
2304         be_stats_cleanup(adapter);
2305 ctrl_clean:
2306         be_ctrl_cleanup(adapter);
2307 free_netdev:
2308         be_msix_disable(adapter);
2309         free_netdev(adapter->netdev);
2310         pci_set_drvdata(pdev, NULL);
2311 rel_reg:
2312         pci_release_regions(pdev);
2313 disable_dev:
2314         pci_disable_device(pdev);
2315 do_none:
2316         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2317         return status;
2318 }
2319
2320 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2321 {
2322         struct be_adapter *adapter = pci_get_drvdata(pdev);
2323         struct net_device *netdev =  adapter->netdev;
2324
2325         if (adapter->wol)
2326                 be_setup_wol(adapter, true);
2327
2328         netif_device_detach(netdev);
2329         if (netif_running(netdev)) {
2330                 rtnl_lock();
2331                 be_close(netdev);
2332                 rtnl_unlock();
2333         }
2334         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2335         be_clear(adapter);
2336
2337         pci_save_state(pdev);
2338         pci_disable_device(pdev);
2339         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2340         return 0;
2341 }
2342
2343 static int be_resume(struct pci_dev *pdev)
2344 {
2345         int status = 0;
2346         struct be_adapter *adapter = pci_get_drvdata(pdev);
2347         struct net_device *netdev =  adapter->netdev;
2348
2349         netif_device_detach(netdev);
2350
2351         status = pci_enable_device(pdev);
2352         if (status)
2353                 return status;
2354
2355         pci_set_power_state(pdev, 0);
2356         pci_restore_state(pdev);
2357
2358         /* tell fw we're ready to fire cmds */
2359         status = be_cmd_fw_init(adapter);
2360         if (status)
2361                 return status;
2362
2363         be_setup(adapter);
2364         if (netif_running(netdev)) {
2365                 rtnl_lock();
2366                 be_open(netdev);
2367                 rtnl_unlock();
2368         }
2369         netif_device_attach(netdev);
2370
2371         if (adapter->wol)
2372                 be_setup_wol(adapter, false);
2373         return 0;
2374 }
2375
2376 static struct pci_driver be_driver = {
2377         .name = DRV_NAME,
2378         .id_table = be_dev_ids,
2379         .probe = be_probe,
2380         .remove = be_remove,
2381         .suspend = be_suspend,
2382         .resume = be_resume
2383 };
2384
2385 static int __init be_init_module(void)
2386 {
2387         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2388             rx_frag_size != 2048) {
2389                 printk(KERN_WARNING DRV_NAME
2390                         " : Module param rx_frag_size must be 2048/4096/8192."
2391                         " Using 2048\n");
2392                 rx_frag_size = 2048;
2393         }
2394
2395         return pci_register_driver(&be_driver);
2396 }
2397 module_init(be_init_module);
2398
2399 static void __exit be_exit_module(void)
2400 {
2401         pci_unregister_driver(&be_driver);
2402 }
2403 module_exit(be_exit_module);