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xfrm: Use frag list abstraction interfaces.
[deliverable/linux.git] / drivers / net / benet / be_main.c
CommitLineData
6b7c5b94
SP		 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"
65f71b8b 19#include <asm/div64.h>
6b7c5b94
SP		 20
21MODULE_VERSION(DRV_VER);
22MODULE_DEVICE_TABLE(pci, be_dev_ids);
23MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
24MODULE_AUTHOR("ServerEngines Corporation");
25MODULE_LICENSE("GPL");
26
27static unsigned int rx_frag_size = 2048;
28module_param(rx_frag_size, uint, S_IRUGO);
29MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
30
6b7c5b94 31static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
c4ca2374
AK		 32 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
33 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
34 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
6b7c5b94
SP		 35 { 0 }
36};
37MODULE_DEVICE_TABLE(pci, be_dev_ids);
38
39static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
40{
41 struct be_dma_mem *mem = &q->dma_mem;
42 if (mem->va)
43 pci_free_consistent(adapter->pdev, mem->size,
44 mem->va, mem->dma);
45}
46
47static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
48 u16 len, u16 entry_size)
49{
50 struct be_dma_mem *mem = &q->dma_mem;
51
52 memset(q, 0, sizeof(*q));
53 q->len = len;
54 q->entry_size = entry_size;
55 mem->size = len * entry_size;
56 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
57 if (!mem->va)
58 return -1;
59 memset(mem->va, 0, mem->size);
60 return 0;
61}
62
63static inline void *queue_head_node(struct be_queue_info *q)
64{
65 return q->dma_mem.va + q->head * q->entry_size;
66}
67
68static inline void *queue_tail_node(struct be_queue_info *q)
69{
70 return q->dma_mem.va + q->tail * q->entry_size;
71}
72
73static inline void queue_head_inc(struct be_queue_info *q)
74{
75 index_inc(&q->head, q->len);
76}
77
78static inline void queue_tail_inc(struct be_queue_info *q)
79{
80 index_inc(&q->tail, q->len);
81}
82
83static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
84{
85 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
86 u32 reg = ioread32(addr);
87 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
88 if (!enabled && enable) {
89 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
90 } else if (enabled && !enable) {
91 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
92 } else {
93 printk(KERN_WARNING DRV_NAME
94 ": bad value in membar_int_ctrl reg=0x%x\n", reg);
95 return;
96 }
97 iowrite32(reg, addr);
98}
99
100static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
101{
102 u32 val = 0;
103 val |= qid & DB_RQ_RING_ID_MASK;
104 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
105 iowrite32(val, ctrl->db + DB_RQ_OFFSET);
106}
107
108static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
109{
110 u32 val = 0;
111 val |= qid & DB_TXULP_RING_ID_MASK;
112 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
113 iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
114}
115
116static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
117 bool arm, bool clear_int, u16 num_popped)
118{
119 u32 val = 0;
120 val |= qid & DB_EQ_RING_ID_MASK;
121 if (arm)
122 val |= 1 << DB_EQ_REARM_SHIFT;
123 if (clear_int)
124 val |= 1 << DB_EQ_CLR_SHIFT;
125 val |= 1 << DB_EQ_EVNT_SHIFT;
126 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
127 iowrite32(val, ctrl->db + DB_EQ_OFFSET);
128}
129
130static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
131 bool arm, u16 num_popped)
132{
133 u32 val = 0;
134 val |= qid & DB_CQ_RING_ID_MASK;
135 if (arm)
136 val |= 1 << DB_CQ_REARM_SHIFT;
137 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
138 iowrite32(val, ctrl->db + DB_CQ_OFFSET);
139}
140
141
142static int be_mac_addr_set(struct net_device *netdev, void *p)
143{
144 struct be_adapter *adapter = netdev_priv(netdev);
145 struct sockaddr *addr = p;
146 int status = 0;
147
148 if (netif_running(netdev)) {
149 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
150 adapter->pmac_id);
151 if (status)
152 return status;
153
154 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
155 adapter->if_handle, &adapter->pmac_id);
156 }
157
158 if (!status)
159 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
160
161 return status;
162}
163
164static void netdev_stats_update(struct be_adapter *adapter)
165{
166 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
167 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
168 struct be_port_rxf_stats *port_stats =
169 &rxf_stats->port[adapter->port_num];
170 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
171
172 dev_stats->rx_packets = port_stats->rx_total_frames;
173 dev_stats->tx_packets = port_stats->tx_unicastframes +
174 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
175 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
176 (u64) port_stats->rx_bytes_lsd;
177 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
178 (u64) port_stats->tx_bytes_lsd;
179
180 /* bad pkts received */
181 dev_stats->rx_errors = port_stats->rx_crc_errors +
182 port_stats->rx_alignment_symbol_errors +
183 port_stats->rx_in_range_errors +
184 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
185
186 /* packet transmit problems */
187 dev_stats->tx_errors = 0;
188
189 /* no space in linux buffers */
190 dev_stats->rx_dropped = 0;
191
192 /* no space available in linux */
193 dev_stats->tx_dropped = 0;
194
195 dev_stats->multicast = port_stats->tx_multicastframes;
196 dev_stats->collisions = 0;
197
198 /* detailed rx errors */
199 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
200 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
201 /* receive ring buffer overflow */
202 dev_stats->rx_over_errors = 0;
203 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
204
205 /* frame alignment errors */
206 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
207 /* receiver fifo overrun */
208 /* drops_no_pbuf is no per i/f, it's per BE card */
209 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
210 port_stats->rx_input_fifo_overflow +
211 rxf_stats->rx_drops_no_pbuf;
212 /* receiver missed packetd */
213 dev_stats->rx_missed_errors = 0;
214 /* detailed tx_errors */
215 dev_stats->tx_aborted_errors = 0;
216 dev_stats->tx_carrier_errors = 0;
217 dev_stats->tx_fifo_errors = 0;
218 dev_stats->tx_heartbeat_errors = 0;
219 dev_stats->tx_window_errors = 0;
220}
221
222static void be_link_status_update(struct be_adapter *adapter)
223{
224 struct be_link_info *prev = &adapter->link;
225 struct be_link_info now = { 0 };
226 struct net_device *netdev = adapter->netdev;
227
228 be_cmd_link_status_query(&adapter->ctrl, &now);
229
230 /* If link came up or went down */
231 if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
232 prev->speed == PHY_LINK_SPEED_ZERO)) {
233 if (now.speed == PHY_LINK_SPEED_ZERO) {
234 netif_stop_queue(netdev);
235 netif_carrier_off(netdev);
236 printk(KERN_INFO "%s: Link down\n", netdev->name);
237 } else {
238 netif_start_queue(netdev);
239 netif_carrier_on(netdev);
240 printk(KERN_INFO "%s: Link up\n", netdev->name);
241 }
242 }
243 *prev = now;
244}
245
246/* Update the EQ delay n BE based on the RX frags consumed / sec */
247static void be_rx_eqd_update(struct be_adapter *adapter)
248{
6b7c5b94
SP		 249 struct be_ctrl_info *ctrl = &adapter->ctrl;
250 struct be_eq_obj *rx_eq = &adapter->rx_eq;
251 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
4097f663
SP		 252 ulong now = jiffies;
253 u32 eqd;
254
255 if (!rx_eq->enable_aic)
256 return;
257
258 /* Wrapped around */
259 if (time_before(now, stats->rx_fps_jiffies)) {
260 stats->rx_fps_jiffies = now;
261 return;
262 }
6b7c5b94
SP		 263
264 /* Update once a second */
4097f663 265 if ((now - stats->rx_fps_jiffies) < HZ)
6b7c5b94
SP		 266 return;
267
268 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
4097f663 269 ((now - stats->rx_fps_jiffies) / HZ);
6b7c5b94 270
4097f663 271 stats->rx_fps_jiffies = now;
6b7c5b94
SP		 272 stats->be_prev_rx_frags = stats->be_rx_frags;
273 eqd = stats->be_rx_fps / 110000;
274 eqd = eqd << 3;
275 if (eqd > rx_eq->max_eqd)
276 eqd = rx_eq->max_eqd;
277 if (eqd < rx_eq->min_eqd)
278 eqd = rx_eq->min_eqd;
279 if (eqd < 10)
280 eqd = 0;
281 if (eqd != rx_eq->cur_eqd)
282 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
283
284 rx_eq->cur_eqd = eqd;
285}
286
6b7c5b94
SP		 287static struct net_device_stats *be_get_stats(struct net_device *dev)
288{
289 struct be_adapter *adapter = netdev_priv(dev);
290
291 return &adapter->stats.net_stats;
292}
293
65f71b8b
SH		 294static u32 be_calc_rate(u64 bytes, unsigned long ticks)
295{
296 u64 rate = bytes;
297
298 do_div(rate, ticks / HZ);
299 rate <<= 3; /* bytes/sec -> bits/sec */
300 do_div(rate, 1000000ul); /* MB/Sec */
301
302 return rate;
303}
304
4097f663
SP		 305static void be_tx_rate_update(struct be_adapter *adapter)
306{
307 struct be_drvr_stats *stats = drvr_stats(adapter);
308 ulong now = jiffies;
309
310 /* Wrapped around? */
311 if (time_before(now, stats->be_tx_jiffies)) {
312 stats->be_tx_jiffies = now;
313 return;
314 }
315
316 /* Update tx rate once in two seconds */
317 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
65f71b8b
SH		 318 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
319 - stats->be_tx_bytes_prev,
320 now - stats->be_tx_jiffies);
4097f663
SP		 321 stats->be_tx_jiffies = now;
322 stats->be_tx_bytes_prev = stats->be_tx_bytes;
323 }
324}
325
6b7c5b94
SP		 326static void be_tx_stats_update(struct be_adapter *adapter,
327 u32 wrb_cnt, u32 copied, bool stopped)
328{
4097f663 329 struct be_drvr_stats *stats = drvr_stats(adapter);
6b7c5b94
SP		 330 stats->be_tx_reqs++;
331 stats->be_tx_wrbs += wrb_cnt;
332 stats->be_tx_bytes += copied;
333 if (stopped)
334 stats->be_tx_stops++;
6b7c5b94
SP		 335}
336
337/* Determine number of WRB entries needed to xmit data in an skb */
338static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
339{
340 int cnt = 0;
341 while (skb) {
342 if (skb->len > skb->data_len)
343 cnt++;
344 cnt += skb_shinfo(skb)->nr_frags;
345 skb = skb_shinfo(skb)->frag_list;
346 }
347 /* to account for hdr wrb */
348 cnt++;
349 if (cnt & 1) {
350 /* add a dummy to make it an even num */
351 cnt++;
352 *dummy = true;
353 } else
354 *dummy = false;
355 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
356 return cnt;
357}
358
359static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
360{
361 wrb->frag_pa_hi = upper_32_bits(addr);
362 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
363 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
364}
365
366static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
367 bool vlan, u32 wrb_cnt, u32 len)
368{
369 memset(hdr, 0, sizeof(*hdr));
370
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
372
373 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
376 hdr, skb_shinfo(skb)->gso_size);
377 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
378 if (is_tcp_pkt(skb))
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
380 else if (is_udp_pkt(skb))
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
382 }
383
384 if (vlan && vlan_tx_tag_present(skb)) {
385 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
386 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
387 hdr, vlan_tx_tag_get(skb));
388 }
389
390 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
391 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
392 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
393 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
394}
395
396
397static int make_tx_wrbs(struct be_adapter *adapter,
398 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
399{
400 u64 busaddr;
401 u32 i, copied = 0;
402 struct pci_dev *pdev = adapter->pdev;
403 struct sk_buff *first_skb = skb;
404 struct be_queue_info *txq = &adapter->tx_obj.q;
405 struct be_eth_wrb *wrb;
406 struct be_eth_hdr_wrb *hdr;
407
408 atomic_add(wrb_cnt, &txq->used);
409 hdr = queue_head_node(txq);
410 queue_head_inc(txq);
411
412 while (skb) {
413 if (skb->len > skb->data_len) {
414 int len = skb->len - skb->data_len;
415 busaddr = pci_map_single(pdev, skb->data, len,
416 PCI_DMA_TODEVICE);
417 wrb = queue_head_node(txq);
418 wrb_fill(wrb, busaddr, len);
419 be_dws_cpu_to_le(wrb, sizeof(*wrb));
420 queue_head_inc(txq);
421 copied += len;
422 }
423
424 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
425 struct skb_frag_struct *frag =
426 &skb_shinfo(skb)->frags[i];
427 busaddr = pci_map_page(pdev, frag->page,
428 frag->page_offset,
429 frag->size, PCI_DMA_TODEVICE);
430 wrb = queue_head_node(txq);
431 wrb_fill(wrb, busaddr, frag->size);
432 be_dws_cpu_to_le(wrb, sizeof(*wrb));
433 queue_head_inc(txq);
434 copied += frag->size;
435 }
436 skb = skb_shinfo(skb)->frag_list;
437 }
438
439 if (dummy_wrb) {
440 wrb = queue_head_node(txq);
441 wrb_fill(wrb, 0, 0);
442 be_dws_cpu_to_le(wrb, sizeof(*wrb));
443 queue_head_inc(txq);
444 }
445
446 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
447 wrb_cnt, copied);
448 be_dws_cpu_to_le(hdr, sizeof(*hdr));
449
450 return copied;
451}
452
453static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
454{
455 struct be_adapter *adapter = netdev_priv(netdev);
456 struct be_tx_obj *tx_obj = &adapter->tx_obj;
457 struct be_queue_info *txq = &tx_obj->q;
458 u32 wrb_cnt = 0, copied = 0;
459 u32 start = txq->head;
460 bool dummy_wrb, stopped = false;
461
462 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
463
464 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
465
466 /* record the sent skb in the sent_skb table */
467 BUG_ON(tx_obj->sent_skb_list[start]);
468 tx_obj->sent_skb_list[start] = skb;
469
470 /* Ensure that txq has space for the next skb; Else stop the queue
471 * *BEFORE* ringing the tx doorbell, so that we serialze the
472 * tx compls of the current transmit which'll wake up the queue
473 */
474 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
475 netif_stop_queue(netdev);
476 stopped = true;
477 }
478
479 be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
480
6b7c5b94
SP		 481 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
482 return NETDEV_TX_OK;
483}
484
485static int be_change_mtu(struct net_device *netdev, int new_mtu)
486{
487 struct be_adapter *adapter = netdev_priv(netdev);
488 if (new_mtu < BE_MIN_MTU ||
489 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
490 dev_info(&adapter->pdev->dev,
491 "MTU must be between %d and %d bytes\n",
492 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
493 return -EINVAL;
494 }
495 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
496 netdev->mtu, new_mtu);
497 netdev->mtu = new_mtu;
498 return 0;
499}
500
501/*
502 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
503 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
504 * set the BE in promiscuous VLAN mode.
505 */
1ab1ab75 506static void be_vid_config(struct net_device *netdev)
6b7c5b94
SP		 507{
508 struct be_adapter *adapter = netdev_priv(netdev);
509 u16 vtag[BE_NUM_VLANS_SUPPORTED];
510 u16 ntags = 0, i;
511
512 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
513 /* Construct VLAN Table to give to HW */
514 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
515 if (adapter->vlan_tag[i]) {
516 vtag[ntags] = cpu_to_le16(i);
517 ntags++;
518 }
519 }
520 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
521 vtag, ntags, 1, 0);
522 } else {
523 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
524 NULL, 0, 1, 1);
525 }
526}
527
528static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
529{
530 struct be_adapter *adapter = netdev_priv(netdev);
531 struct be_eq_obj *rx_eq = &adapter->rx_eq;
532 struct be_eq_obj *tx_eq = &adapter->tx_eq;
533 struct be_ctrl_info *ctrl = &adapter->ctrl;
534
535 be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
536 be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
537 adapter->vlan_grp = grp;
538 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
539 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
540}
541
542static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
543{
544 struct be_adapter *adapter = netdev_priv(netdev);
545
546 adapter->num_vlans++;
547 adapter->vlan_tag[vid] = 1;
548
1ab1ab75 549 be_vid_config(netdev);
6b7c5b94
SP		 550}
551
552static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
553{
554 struct be_adapter *adapter = netdev_priv(netdev);
555
556 adapter->num_vlans--;
557 adapter->vlan_tag[vid] = 0;
558
559 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
1ab1ab75 560 be_vid_config(netdev);
6b7c5b94
SP		 561}
562
563static void be_set_multicast_filter(struct net_device *netdev)
564{
565 struct be_adapter *adapter = netdev_priv(netdev);
566 struct dev_mc_list *mc_ptr;
567 u8 mac_addr[32][ETH_ALEN];
568 int i = 0;
569
570 if (netdev->flags & IFF_ALLMULTI) {
571 /* set BE in Multicast promiscuous */
572 be_cmd_mcast_mac_set(&adapter->ctrl,
573 adapter->if_handle, NULL, 0, true);
574 return;
575 }
576
577 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
578 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
579 if (++i >= 32) {
580 be_cmd_mcast_mac_set(&adapter->ctrl,
581 adapter->if_handle, &mac_addr[0][0], i, false);
582 i = 0;
583 }
584
585 }
586
587 if (i) {
588 /* reset the promiscuous mode also. */
589 be_cmd_mcast_mac_set(&adapter->ctrl,
590 adapter->if_handle, &mac_addr[0][0], i, false);
591 }
592}
593
594static void be_set_multicast_list(struct net_device *netdev)
595{
596 struct be_adapter *adapter = netdev_priv(netdev);
597
598 if (netdev->flags & IFF_PROMISC) {
599 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
600 } else {
601 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
602 be_set_multicast_filter(netdev);
603 }
604}
605
4097f663 606static void be_rx_rate_update(struct be_adapter *adapter)
6b7c5b94 607{
4097f663
SP		 608 struct be_drvr_stats *stats = drvr_stats(adapter);
609 ulong now = jiffies;
6b7c5b94 610
4097f663
SP		 611 /* Wrapped around */
612 if (time_before(now, stats->be_rx_jiffies)) {
613 stats->be_rx_jiffies = now;
614 return;
615 }
6b7c5b94
SP		 616
617 /* Update the rate once in two seconds */
4097f663 618 if ((now - stats->be_rx_jiffies) < 2 * HZ)
6b7c5b94
SP		 619 return;
620
65f71b8b
SH		 621 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
622 - stats->be_rx_bytes_prev,
623 now - stats->be_rx_jiffies);
4097f663 624 stats->be_rx_jiffies = now;
6b7c5b94
SP		 625 stats->be_rx_bytes_prev = stats->be_rx_bytes;
626}
627
4097f663
SP		 628static void be_rx_stats_update(struct be_adapter *adapter,
629 u32 pktsize, u16 numfrags)
630{
631 struct be_drvr_stats *stats = drvr_stats(adapter);
632
633 stats->be_rx_compl++;
634 stats->be_rx_frags += numfrags;
635 stats->be_rx_bytes += pktsize;
636}
637
728a9972
AK		 638static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
639{
640 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
641
642 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
643 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
644 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
645 if (ip_version) {
646 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
647 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
648 }
649 ipv6_chk = (ip_version && (tcpf || udpf));
650
651 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
652}
653
6b7c5b94
SP		 654static struct be_rx_page_info *
655get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
656{
657 struct be_rx_page_info *rx_page_info;
658 struct be_queue_info *rxq = &adapter->rx_obj.q;
659
660 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
661 BUG_ON(!rx_page_info->page);
662
663 if (rx_page_info->last_page_user)
664 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
665 adapter->big_page_size, PCI_DMA_FROMDEVICE);
666
667 atomic_dec(&rxq->used);
668 return rx_page_info;
669}
670
671/* Throwaway the data in the Rx completion */
672static void be_rx_compl_discard(struct be_adapter *adapter,
673 struct be_eth_rx_compl *rxcp)
674{
675 struct be_queue_info *rxq = &adapter->rx_obj.q;
676 struct be_rx_page_info *page_info;
677 u16 rxq_idx, i, num_rcvd;
678
679 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
680 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
681
682 for (i = 0; i < num_rcvd; i++) {
683 page_info = get_rx_page_info(adapter, rxq_idx);
684 put_page(page_info->page);
685 memset(page_info, 0, sizeof(*page_info));
686 index_inc(&rxq_idx, rxq->len);
687 }
688}
689
690/*
691 * skb_fill_rx_data forms a complete skb for an ether frame
692 * indicated by rxcp.
693 */
694static void skb_fill_rx_data(struct be_adapter *adapter,
695 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
696{
697 struct be_queue_info *rxq = &adapter->rx_obj.q;
698 struct be_rx_page_info *page_info;
699 u16 rxq_idx, i, num_rcvd;
700 u32 pktsize, hdr_len, curr_frag_len;
701 u8 *start;
702
703 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
704 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
705 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
706
707 page_info = get_rx_page_info(adapter, rxq_idx);
708
709 start = page_address(page_info->page) + page_info->page_offset;
710 prefetch(start);
711
712 /* Copy data in the first descriptor of this completion */
713 curr_frag_len = min(pktsize, rx_frag_size);
714
715 /* Copy the header portion into skb_data */
716 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
717 memcpy(skb->data, start, hdr_len);
718 skb->len = curr_frag_len;
719 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
720 /* Complete packet has now been moved to data */
721 put_page(page_info->page);
722 skb->data_len = 0;
723 skb->tail += curr_frag_len;
724 } else {
725 skb_shinfo(skb)->nr_frags = 1;
726 skb_shinfo(skb)->frags[0].page = page_info->page;
727 skb_shinfo(skb)->frags[0].page_offset =
728 page_info->page_offset + hdr_len;
729 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
730 skb->data_len = curr_frag_len - hdr_len;
731 skb->tail += hdr_len;
732 }
733 memset(page_info, 0, sizeof(*page_info));
734
735 if (pktsize <= rx_frag_size) {
736 BUG_ON(num_rcvd != 1);
737 return;
738 }
739
740 /* More frags present for this completion */
741 pktsize -= curr_frag_len; /* account for above copied frag */
742 for (i = 1; i < num_rcvd; i++) {
743 index_inc(&rxq_idx, rxq->len);
744 page_info = get_rx_page_info(adapter, rxq_idx);
745
746 curr_frag_len = min(pktsize, rx_frag_size);
747
748 skb_shinfo(skb)->frags[i].page = page_info->page;
749 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
750 skb_shinfo(skb)->frags[i].size = curr_frag_len;
751 skb->len += curr_frag_len;
752 skb->data_len += curr_frag_len;
753 skb_shinfo(skb)->nr_frags++;
754 pktsize -= curr_frag_len;
755
756 memset(page_info, 0, sizeof(*page_info));
757 }
758
4097f663 759 be_rx_stats_update(adapter, pktsize, num_rcvd);
6b7c5b94
SP		 760 return;
761}
762
763/* Process the RX completion indicated by rxcp when LRO is disabled */
764static void be_rx_compl_process(struct be_adapter *adapter,
765 struct be_eth_rx_compl *rxcp)
766{
767 struct sk_buff *skb;
768 u32 vtp, vid;
6b7c5b94 769
6b7c5b94
SP		 770 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
771
772 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
773 if (!skb) {
774 if (net_ratelimit())
775 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
776 be_rx_compl_discard(adapter, rxcp);
777 return;
778 }
779
780 skb_reserve(skb, NET_IP_ALIGN);
781
782 skb_fill_rx_data(adapter, skb, rxcp);
783
728a9972 784 if (do_pkt_csum(rxcp, adapter->rx_csum))
6b7c5b94 785 skb->ip_summed = CHECKSUM_NONE;
728a9972
AK		 786 else
787 skb->ip_summed = CHECKSUM_UNNECESSARY;
6b7c5b94
SP		 788
789 skb->truesize = skb->len + sizeof(struct sk_buff);
790 skb->protocol = eth_type_trans(skb, adapter->netdev);
791 skb->dev = adapter->netdev;
792
793 if (vtp) {
794 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
795 kfree_skb(skb);
796 return;
797 }
798 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
799 vid = be16_to_cpu(vid);
800 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
801 } else {
802 netif_receive_skb(skb);
803 }
804
805 adapter->netdev->last_rx = jiffies;
806
807 return;
808}
809
810/* Process the RX completion indicated by rxcp when LRO is enabled */
811static void be_rx_compl_process_lro(struct be_adapter *adapter,
812 struct be_eth_rx_compl *rxcp)
813{
814 struct be_rx_page_info *page_info;
815 struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
816 struct be_queue_info *rxq = &adapter->rx_obj.q;
817 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
818 u16 i, rxq_idx = 0, vid;
819
820 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
821 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
822 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
823 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
824
825 remaining = pkt_size;
826 for (i = 0; i < num_rcvd; i++) {
827 page_info = get_rx_page_info(adapter, rxq_idx);
828
829 curr_frag_len = min(remaining, rx_frag_size);
830
831 rx_frags[i].page = page_info->page;
832 rx_frags[i].page_offset = page_info->page_offset;
833 rx_frags[i].size = curr_frag_len;
834 remaining -= curr_frag_len;
835
836 index_inc(&rxq_idx, rxq->len);
837
838 memset(page_info, 0, sizeof(*page_info));
839 }
840
841 if (likely(!vlanf)) {
842 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
843 pkt_size, NULL, 0);
844 } else {
845 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
846 vid = be16_to_cpu(vid);
847
848 if (!adapter->vlan_grp || adapter->num_vlans == 0)
849 return;
850
851 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
852 rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
853 vid, NULL, 0);
854 }
855
4097f663 856 be_rx_stats_update(adapter, pkt_size, num_rcvd);
6b7c5b94
SP		 857 return;
858}
859
860static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
861{
862 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
863
864 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
865 return NULL;
866
867 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
868
869 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
870
871 queue_tail_inc(&adapter->rx_obj.cq);
872 return rxcp;
873}
874
875static inline struct page *be_alloc_pages(u32 size)
876{
877 gfp_t alloc_flags = GFP_ATOMIC;
878 u32 order = get_order(size);
879 if (order > 0)
880 alloc_flags |= __GFP_COMP;
881 return alloc_pages(alloc_flags, order);
882}
883
884/*
885 * Allocate a page, split it to fragments of size rx_frag_size and post as
886 * receive buffers to BE
887 */
888static void be_post_rx_frags(struct be_adapter *adapter)
889{
890 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
891 struct be_rx_page_info *page_info = NULL;
892 struct be_queue_info *rxq = &adapter->rx_obj.q;
893 struct page *pagep = NULL;
894 struct be_eth_rx_d *rxd;
895 u64 page_dmaaddr = 0, frag_dmaaddr;
896 u32 posted, page_offset = 0;
897
6b7c5b94
SP		 898 page_info = &page_info_tbl[rxq->head];
899 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
900 if (!pagep) {
901 pagep = be_alloc_pages(adapter->big_page_size);
902 if (unlikely(!pagep)) {
903 drvr_stats(adapter)->be_ethrx_post_fail++;
904 break;
905 }
906 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
907 adapter->big_page_size,
908 PCI_DMA_FROMDEVICE);
909 page_info->page_offset = 0;
910 } else {
911 get_page(pagep);
912 page_info->page_offset = page_offset + rx_frag_size;
913 }
914 page_offset = page_info->page_offset;
915 page_info->page = pagep;
916 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
917 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
918
919 rxd = queue_head_node(rxq);
920 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
921 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
922 queue_head_inc(rxq);
923
924 /* Any space left in the current big page for another frag? */
925 if ((page_offset + rx_frag_size + rx_frag_size) >
926 adapter->big_page_size) {
927 pagep = NULL;
928 page_info->last_page_user = true;
929 }
930 page_info = &page_info_tbl[rxq->head];
931 }
932 if (pagep)
933 page_info->last_page_user = true;
934
935 if (posted) {
6b7c5b94 936 atomic_add(posted, &rxq->used);
ea1dae11
SP		 937 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
938 } else if (atomic_read(&rxq->used) == 0) {
939 /* Let be_worker replenish when memory is available */
940 adapter->rx_post_starved = true;
6b7c5b94
SP		 941 }
942
943 return;
944}
945
946static struct be_eth_tx_compl *
947be_tx_compl_get(struct be_adapter *adapter)
948{
949 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
950 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
951
952 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
953 return NULL;
954
955 be_dws_le_to_cpu(txcp, sizeof(*txcp));
956
957 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
958
959 queue_tail_inc(tx_cq);
960 return txcp;
961}
962
963static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
964{
965 struct be_queue_info *txq = &adapter->tx_obj.q;
966 struct be_eth_wrb *wrb;
967 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
968 struct sk_buff *sent_skb;
969 u64 busaddr;
970 u16 cur_index, num_wrbs = 0;
971
972 cur_index = txq->tail;
973 sent_skb = sent_skbs[cur_index];
974 BUG_ON(!sent_skb);
975 sent_skbs[cur_index] = NULL;
976
977 do {
978 cur_index = txq->tail;
979 wrb = queue_tail_node(txq);
980 be_dws_le_to_cpu(wrb, sizeof(*wrb));
981 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
982 if (busaddr != 0) {
983 pci_unmap_single(adapter->pdev, busaddr,
984 wrb->frag_len, PCI_DMA_TODEVICE);
985 }
986 num_wrbs++;
987 queue_tail_inc(txq);
988 } while (cur_index != last_index);
989
990 atomic_sub(num_wrbs, &txq->used);
991
992 kfree_skb(sent_skb);
993}
994
995static void be_rx_q_clean(struct be_adapter *adapter)
996{
997 struct be_rx_page_info *page_info;
998 struct be_queue_info *rxq = &adapter->rx_obj.q;
999 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1000 struct be_eth_rx_compl *rxcp;
1001 u16 tail;
1002
1003 /* First cleanup pending rx completions */
1004 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1005 be_rx_compl_discard(adapter, rxcp);
1006 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1007 }
1008
1009 /* Then free posted rx buffer that were not used */
1010 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1011 for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1012 page_info = get_rx_page_info(adapter, tail);
1013 put_page(page_info->page);
1014 memset(page_info, 0, sizeof(*page_info));
1015 }
1016 BUG_ON(atomic_read(&rxq->used));
1017}
1018
1019static void be_tx_q_clean(struct be_adapter *adapter)
1020{
1021 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1022 struct sk_buff *sent_skb;
1023 struct be_queue_info *txq = &adapter->tx_obj.q;
1024 u16 last_index;
1025 bool dummy_wrb;
1026
1027 while (atomic_read(&txq->used)) {
1028 sent_skb = sent_skbs[txq->tail];
1029 last_index = txq->tail;
1030 index_adv(&last_index,
1031 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1032 be_tx_compl_process(adapter, last_index);
1033 }
1034}
1035
1036static void be_tx_queues_destroy(struct be_adapter *adapter)
1037{
1038 struct be_queue_info *q;
1039
1040 q = &adapter->tx_obj.q;
1041 if (q->created)
1042 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1043 be_queue_free(adapter, q);
1044
1045 q = &adapter->tx_obj.cq;
1046 if (q->created)
1047 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1048 be_queue_free(adapter, q);
1049
1050 /* No more tx completions can be rcvd now; clean up if there are
1051 * any pending completions or pending tx requests */
1052 be_tx_q_clean(adapter);
1053
1054 q = &adapter->tx_eq.q;
1055 if (q->created)
1056 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1057 be_queue_free(adapter, q);
1058}
1059
1060static int be_tx_queues_create(struct be_adapter *adapter)
1061{
1062 struct be_queue_info *eq, *q, *cq;
1063
1064 adapter->tx_eq.max_eqd = 0;
1065 adapter->tx_eq.min_eqd = 0;
1066 adapter->tx_eq.cur_eqd = 96;
1067 adapter->tx_eq.enable_aic = false;
1068 /* Alloc Tx Event queue */
1069 eq = &adapter->tx_eq.q;
1070 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1071 return -1;
1072
1073 /* Ask BE to create Tx Event queue */
1074 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1075 goto tx_eq_free;
1076 /* Alloc TX eth compl queue */
1077 cq = &adapter->tx_obj.cq;
1078 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1079 sizeof(struct be_eth_tx_compl)))
1080 goto tx_eq_destroy;
1081
1082 /* Ask BE to create Tx eth compl queue */
1083 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1084 goto tx_cq_free;
1085
1086 /* Alloc TX eth queue */
1087 q = &adapter->tx_obj.q;
1088 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1089 goto tx_cq_destroy;
1090
1091 /* Ask BE to create Tx eth queue */
1092 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1093 goto tx_q_free;
1094 return 0;
1095
1096tx_q_free:
1097 be_queue_free(adapter, q);
1098tx_cq_destroy:
1099 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1100tx_cq_free:
1101 be_queue_free(adapter, cq);
1102tx_eq_destroy:
1103 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1104tx_eq_free:
1105 be_queue_free(adapter, eq);
1106 return -1;
1107}
1108
1109static void be_rx_queues_destroy(struct be_adapter *adapter)
1110{
1111 struct be_queue_info *q;
1112
1113 q = &adapter->rx_obj.q;
1114 if (q->created) {
1115 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1116 be_rx_q_clean(adapter);
1117 }
1118 be_queue_free(adapter, q);
1119
1120 q = &adapter->rx_obj.cq;
1121 if (q->created)
1122 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1123 be_queue_free(adapter, q);
1124
1125 q = &adapter->rx_eq.q;
1126 if (q->created)
1127 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1128 be_queue_free(adapter, q);
1129}
1130
1131static int be_rx_queues_create(struct be_adapter *adapter)
1132{
1133 struct be_queue_info *eq, *q, *cq;
1134 int rc;
1135
1136 adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1137 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1138 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1139 adapter->rx_eq.min_eqd = 0;
1140 adapter->rx_eq.cur_eqd = 0;
1141 adapter->rx_eq.enable_aic = true;
1142
1143 /* Alloc Rx Event queue */
1144 eq = &adapter->rx_eq.q;
1145 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1146 sizeof(struct be_eq_entry));
1147 if (rc)
1148 return rc;
1149
1150 /* Ask BE to create Rx Event queue */
1151 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1152 if (rc)
1153 goto rx_eq_free;
1154
1155 /* Alloc RX eth compl queue */
1156 cq = &adapter->rx_obj.cq;
1157 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1158 sizeof(struct be_eth_rx_compl));
1159 if (rc)
1160 goto rx_eq_destroy;
1161
1162 /* Ask BE to create Rx eth compl queue */
1163 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1164 if (rc)
1165 goto rx_cq_free;
1166
1167 /* Alloc RX eth queue */
1168 q = &adapter->rx_obj.q;
1169 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1170 if (rc)
1171 goto rx_cq_destroy;
1172
1173 /* Ask BE to create Rx eth queue */
1174 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1175 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1176 if (rc)
1177 goto rx_q_free;
1178
1179 return 0;
1180rx_q_free:
1181 be_queue_free(adapter, q);
1182rx_cq_destroy:
1183 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1184rx_cq_free:
1185 be_queue_free(adapter, cq);
1186rx_eq_destroy:
1187 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1188rx_eq_free:
1189 be_queue_free(adapter, eq);
1190 return rc;
1191}
1192static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1193{
1194 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1195 u32 evt = entry->evt;
1196
1197 if (!evt)
1198 return false;
1199
1200 evt = le32_to_cpu(evt);
1201 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1202 entry->evt = 0;
1203 queue_tail_inc(&eq_obj->q);
1204 return true;
1205}
1206
1207static int event_handle(struct be_ctrl_info *ctrl,
1208 struct be_eq_obj *eq_obj)
1209{
1210 u16 rid = 0, num = 0;
1211
1212 while (event_get(eq_obj, &rid))
1213 num++;
1214
1215 /* We can see an interrupt and no event */
1216 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1217 if (num)
1218 napi_schedule(&eq_obj->napi);
1219
1220 return num;
1221}
1222
1223static irqreturn_t be_intx(int irq, void *dev)
1224{
1225 struct be_adapter *adapter = dev;
1226 struct be_ctrl_info *ctrl = &adapter->ctrl;
1227 int rx, tx;
1228
1229 tx = event_handle(ctrl, &adapter->tx_eq);
1230 rx = event_handle(ctrl, &adapter->rx_eq);
1231
1232 if (rx || tx)
1233 return IRQ_HANDLED;
1234 else
1235 return IRQ_NONE;
1236}
1237
1238static irqreturn_t be_msix_rx(int irq, void *dev)
1239{
1240 struct be_adapter *adapter = dev;
1241
1242 event_handle(&adapter->ctrl, &adapter->rx_eq);
1243
1244 return IRQ_HANDLED;
1245}
1246
1247static irqreturn_t be_msix_tx(int irq, void *dev)
1248{
1249 struct be_adapter *adapter = dev;
1250
1251 event_handle(&adapter->ctrl, &adapter->tx_eq);
1252
1253 return IRQ_HANDLED;
1254}
1255
1256static inline bool do_lro(struct be_adapter *adapter,
1257 struct be_eth_rx_compl *rxcp)
1258{
1259 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1260 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1261
1262 if (err)
1263 drvr_stats(adapter)->be_rxcp_err++;
1264
1265 return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1266 false : true;
1267}
1268
1269int be_poll_rx(struct napi_struct *napi, int budget)
1270{
1271 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1272 struct be_adapter *adapter =
1273 container_of(rx_eq, struct be_adapter, rx_eq);
1274 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1275 struct be_eth_rx_compl *rxcp;
1276 u32 work_done;
1277
1278 for (work_done = 0; work_done < budget; work_done++) {
1279 rxcp = be_rx_compl_get(adapter);
1280 if (!rxcp)
1281 break;
1282
1283 if (do_lro(adapter, rxcp))
1284 be_rx_compl_process_lro(adapter, rxcp);
1285 else
1286 be_rx_compl_process(adapter, rxcp);
1287 }
1288
1289 lro_flush_all(&adapter->rx_obj.lro_mgr);
1290
1291 /* Refill the queue */
1292 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1293 be_post_rx_frags(adapter);
1294
1295 /* All consumed */
1296 if (work_done < budget) {
1297 napi_complete(napi);
1298 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1299 } else {
1300 /* More to be consumed; continue with interrupts disabled */
1301 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1302 }
1303 return work_done;
1304}
1305
1306/* For TX we don't honour budget; consume everything */
1307int be_poll_tx(struct napi_struct *napi, int budget)
1308{
1309 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1310 struct be_adapter *adapter =
1311 container_of(tx_eq, struct be_adapter, tx_eq);
1312 struct be_tx_obj *tx_obj = &adapter->tx_obj;
1313 struct be_queue_info *tx_cq = &tx_obj->cq;
1314 struct be_queue_info *txq = &tx_obj->q;
1315 struct be_eth_tx_compl *txcp;
1316 u32 num_cmpl = 0;
1317 u16 end_idx;
1318
1319 while ((txcp = be_tx_compl_get(adapter))) {
1320 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1321 wrb_index, txcp);
1322 be_tx_compl_process(adapter, end_idx);
1323 num_cmpl++;
1324 }
1325
1326 /* As Tx wrbs have been freed up, wake up netdev queue if
1327 * it was stopped due to lack of tx wrbs.
1328 */
1329 if (netif_queue_stopped(adapter->netdev) &&
1330 atomic_read(&txq->used) < txq->len / 2) {
1331 netif_wake_queue(adapter->netdev);
1332 }
1333
1334 napi_complete(napi);
1335
1336 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1337
1338 drvr_stats(adapter)->be_tx_events++;
1339 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1340
1341 return 1;
1342}
1343
ea1dae11
SP		 1344static void be_worker(struct work_struct *work)
1345{
1346 struct be_adapter *adapter =
1347 container_of(work, struct be_adapter, work.work);
1348 int status;
1349
1350 /* Check link */
1351 be_link_status_update(adapter);
1352
1353 /* Get Stats */
1354 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1355 if (!status)
1356 netdev_stats_update(adapter);
1357
1358 /* Set EQ delay */
1359 be_rx_eqd_update(adapter);
1360
4097f663
SP		 1361 be_tx_rate_update(adapter);
1362 be_rx_rate_update(adapter);
1363
ea1dae11
SP		 1364 if (adapter->rx_post_starved) {
1365 adapter->rx_post_starved = false;
1366 be_post_rx_frags(adapter);
1367 }
1368
1369 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1370}
1371
6b7c5b94
SP		 1372static void be_msix_enable(struct be_adapter *adapter)
1373{
1374 int i, status;
1375
1376 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1377 adapter->msix_entries[i].entry = i;
1378
1379 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1380 BE_NUM_MSIX_VECTORS);
1381 if (status == 0)
1382 adapter->msix_enabled = true;
1383 return;
1384}
1385
1386static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1387{
1388 return adapter->msix_entries[eq_id -
1389 8 * adapter->ctrl.pci_func].vector;
1390}
1391
1392static int be_msix_register(struct be_adapter *adapter)
1393{
1394 struct net_device *netdev = adapter->netdev;
1395 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1396 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1397 int status, vec;
1398
1399 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1400 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1401 status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1402 if (status)
1403 goto err;
1404
1405 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1406 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1407 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1408 if (status) { /* Free TX IRQ */
1409 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1410 free_irq(vec, adapter);
1411 goto err;
1412 }
1413 return 0;
1414err:
1415 dev_warn(&adapter->pdev->dev,
1416 "MSIX Request IRQ failed - err %d\n", status);
1417 pci_disable_msix(adapter->pdev);
1418 adapter->msix_enabled = false;
1419 return status;
1420}
1421
1422static int be_irq_register(struct be_adapter *adapter)
1423{
1424 struct net_device *netdev = adapter->netdev;
1425 int status;
1426
1427 if (adapter->msix_enabled) {
1428 status = be_msix_register(adapter);
1429 if (status == 0)
1430 goto done;
1431 }
1432
1433 /* INTx */
1434 netdev->irq = adapter->pdev->irq;
1435 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1436 adapter);
1437 if (status) {
1438 dev_err(&adapter->pdev->dev,
1439 "INTx request IRQ failed - err %d\n", status);
1440 return status;
1441 }
1442done:
1443 adapter->isr_registered = true;
1444 return 0;
1445}
1446
1447static void be_irq_unregister(struct be_adapter *adapter)
1448{
1449 struct net_device *netdev = adapter->netdev;
1450 int vec;
1451
1452 if (!adapter->isr_registered)
1453 return;
1454
1455 /* INTx */
1456 if (!adapter->msix_enabled) {
1457 free_irq(netdev->irq, adapter);
1458 goto done;
1459 }
1460
1461 /* MSIx */
1462 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1463 free_irq(vec, adapter);
1464 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1465 free_irq(vec, adapter);
1466done:
1467 adapter->isr_registered = false;
1468 return;
1469}
1470
1471static int be_open(struct net_device *netdev)
1472{
1473 struct be_adapter *adapter = netdev_priv(netdev);
1474 struct be_ctrl_info *ctrl = &adapter->ctrl;
1475 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1476 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1477 u32 if_flags;
1478 int status;
1479
1480 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1481 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1482 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1483 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1484 false/* pmac_invalid */, &adapter->if_handle,
1485 &adapter->pmac_id);
1486 if (status != 0)
1487 goto do_none;
1488
1ab1ab75
SP		 1489 be_vid_config(netdev);
1490
6b7c5b94
SP		 1491 status = be_cmd_set_flow_control(ctrl, true, true);
1492 if (status != 0)
1493 goto if_destroy;
1494
1495 status = be_tx_queues_create(adapter);
1496 if (status != 0)
1497 goto if_destroy;
1498
1499 status = be_rx_queues_create(adapter);
1500 if (status != 0)
1501 goto tx_qs_destroy;
1502
1503 /* First time posting */
1504 be_post_rx_frags(adapter);
1505
1506 napi_enable(&rx_eq->napi);
1507 napi_enable(&tx_eq->napi);
1508
1509 be_irq_register(adapter);
1510
1511 be_intr_set(ctrl, true);
1512
1513 /* The evt queues are created in the unarmed state; arm them */
1514 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1515 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1516
1517 /* The compl queues are created in the unarmed state; arm them */
1518 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1519 be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1520
1521 be_link_status_update(adapter);
1522
1523 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1524 return 0;
1525
1526tx_qs_destroy:
1527 be_tx_queues_destroy(adapter);
1528if_destroy:
1529 be_cmd_if_destroy(ctrl, adapter->if_handle);
1530do_none:
1531 return status;
1532}
1533
1534static int be_close(struct net_device *netdev)
1535{
1536 struct be_adapter *adapter = netdev_priv(netdev);
1537 struct be_ctrl_info *ctrl = &adapter->ctrl;
1538 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1539 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1540 int vec;
1541
1542 cancel_delayed_work(&adapter->work);
1543
1544 netif_stop_queue(netdev);
1545 netif_carrier_off(netdev);
1546 adapter->link.speed = PHY_LINK_SPEED_ZERO;
1547
1548 be_intr_set(ctrl, false);
1549
1550 if (adapter->msix_enabled) {
1551 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1552 synchronize_irq(vec);
1553 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1554 synchronize_irq(vec);
1555 } else {
1556 synchronize_irq(netdev->irq);
1557 }
1558 be_irq_unregister(adapter);
1559
1560 napi_disable(&rx_eq->napi);
1561 napi_disable(&tx_eq->napi);
1562
1563 be_rx_queues_destroy(adapter);
1564 be_tx_queues_destroy(adapter);
1565
1566 be_cmd_if_destroy(ctrl, adapter->if_handle);
1567 return 0;
1568}
1569
1570static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1571 void **ip_hdr, void **tcpudp_hdr,
1572 u64 *hdr_flags, void *priv)
1573{
1574 struct ethhdr *eh;
1575 struct vlan_ethhdr *veh;
1576 struct iphdr *iph;
1577 u8 *va = page_address(frag->page) + frag->page_offset;
1578 unsigned long ll_hlen;
1579
1580 prefetch(va);
1581 eh = (struct ethhdr *)va;
1582 *mac_hdr = eh;
1583 ll_hlen = ETH_HLEN;
1584 if (eh->h_proto != htons(ETH_P_IP)) {
1585 if (eh->h_proto == htons(ETH_P_8021Q)) {
1586 veh = (struct vlan_ethhdr *)va;
1587 if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1588 return -1;
1589
1590 ll_hlen += VLAN_HLEN;
1591 } else {
1592 return -1;
1593 }
1594 }
1595 *hdr_flags = LRO_IPV4;
1596 iph = (struct iphdr *)(va + ll_hlen);
1597 *ip_hdr = iph;
1598 if (iph->protocol != IPPROTO_TCP)
1599 return -1;
1600 *hdr_flags |= LRO_TCP;
1601 *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1602
1603 return 0;
1604}
1605
1606static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1607{
1608 struct net_lro_mgr *lro_mgr;
1609
1610 lro_mgr = &adapter->rx_obj.lro_mgr;
1611 lro_mgr->dev = netdev;
1612 lro_mgr->features = LRO_F_NAPI;
1613 lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1614 lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1615 lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1616 lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1617 lro_mgr->get_frag_header = be_get_frag_header;
1618 lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1619}
1620
1621static struct net_device_ops be_netdev_ops = {
1622 .ndo_open = be_open,
1623 .ndo_stop = be_close,
1624 .ndo_start_xmit = be_xmit,
1625 .ndo_get_stats = be_get_stats,
1626 .ndo_set_rx_mode = be_set_multicast_list,
1627 .ndo_set_mac_address = be_mac_addr_set,
1628 .ndo_change_mtu = be_change_mtu,
1629 .ndo_validate_addr = eth_validate_addr,
1630 .ndo_vlan_rx_register = be_vlan_register,
1631 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1632 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1633};
1634
1635static void be_netdev_init(struct net_device *netdev)
1636{
1637 struct be_adapter *adapter = netdev_priv(netdev);
1638
1639 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1640 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
728a9972 1641 NETIF_F_IPV6_CSUM;
6b7c5b94
SP		 1642
1643 netdev->flags |= IFF_MULTICAST;
1644
728a9972
AK		 1645 adapter->rx_csum = true;
1646
6b7c5b94
SP		 1647 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1648
1649 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1650
1651 be_lro_init(adapter, netdev);
1652
1653 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1654 BE_NAPI_WEIGHT);
1655 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1656 BE_NAPI_WEIGHT);
1657
1658 netif_carrier_off(netdev);
1659 netif_stop_queue(netdev);
1660}
1661
1662static void be_unmap_pci_bars(struct be_adapter *adapter)
1663{
1664 struct be_ctrl_info *ctrl = &adapter->ctrl;
1665 if (ctrl->csr)
1666 iounmap(ctrl->csr);
1667 if (ctrl->db)
1668 iounmap(ctrl->db);
1669 if (ctrl->pcicfg)
1670 iounmap(ctrl->pcicfg);
1671}
1672
1673static int be_map_pci_bars(struct be_adapter *adapter)
1674{
1675 u8 __iomem *addr;
1676
1677 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1678 pci_resource_len(adapter->pdev, 2));
1679 if (addr == NULL)
1680 return -ENOMEM;
1681 adapter->ctrl.csr = addr;
1682
1683 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1684 128 * 1024);
1685 if (addr == NULL)
1686 goto pci_map_err;
1687 adapter->ctrl.db = addr;
1688
1689 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1690 pci_resource_len(adapter->pdev, 1));
1691 if (addr == NULL)
1692 goto pci_map_err;
1693 adapter->ctrl.pcicfg = addr;
1694
1695 return 0;
1696pci_map_err:
1697 be_unmap_pci_bars(adapter);
1698 return -ENOMEM;
1699}
1700
1701
1702static void be_ctrl_cleanup(struct be_adapter *adapter)
1703{
1704 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1705
1706 be_unmap_pci_bars(adapter);
1707
1708 if (mem->va)
1709 pci_free_consistent(adapter->pdev, mem->size,
1710 mem->va, mem->dma);
1711}
1712
1713/* Initialize the mbox required to send cmds to BE */
1714static int be_ctrl_init(struct be_adapter *adapter)
1715{
1716 struct be_ctrl_info *ctrl = &adapter->ctrl;
1717 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1718 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1719 int status;
1720 u32 val;
1721
1722 status = be_map_pci_bars(adapter);
1723 if (status)
1724 return status;
1725
1726 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1727 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1728 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1729 if (!mbox_mem_alloc->va) {
1730 be_unmap_pci_bars(adapter);
1731 return -1;
1732 }
1733 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1734 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1735 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1736 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1737 spin_lock_init(&ctrl->cmd_lock);
1738
1739 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1740 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1741 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1742 return 0;
1743}
1744
1745static void be_stats_cleanup(struct be_adapter *adapter)
1746{
1747 struct be_stats_obj *stats = &adapter->stats;
1748 struct be_dma_mem *cmd = &stats->cmd;
1749
1750 if (cmd->va)
1751 pci_free_consistent(adapter->pdev, cmd->size,
1752 cmd->va, cmd->dma);
1753}
1754
1755static int be_stats_init(struct be_adapter *adapter)
1756{
1757 struct be_stats_obj *stats = &adapter->stats;
1758 struct be_dma_mem *cmd = &stats->cmd;
1759
1760 cmd->size = sizeof(struct be_cmd_req_get_stats);
1761 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1762 if (cmd->va == NULL)
1763 return -1;
1764 return 0;
1765}
1766
1767static void __devexit be_remove(struct pci_dev *pdev)
1768{
1769 struct be_adapter *adapter = pci_get_drvdata(pdev);
1770 if (!adapter)
1771 return;
1772
1773 unregister_netdev(adapter->netdev);
1774
1775 be_stats_cleanup(adapter);
1776
1777 be_ctrl_cleanup(adapter);
1778
1779 if (adapter->msix_enabled) {
1780 pci_disable_msix(adapter->pdev);
1781 adapter->msix_enabled = false;
1782 }
1783
1784 pci_set_drvdata(pdev, NULL);
1785 pci_release_regions(pdev);
1786 pci_disable_device(pdev);
1787
1788 free_netdev(adapter->netdev);
1789}
1790
1791static int be_hw_up(struct be_adapter *adapter)
1792{
1793 struct be_ctrl_info *ctrl = &adapter->ctrl;
1794 int status;
1795
1796 status = be_cmd_POST(ctrl);
1797 if (status)
1798 return status;
1799
1800 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1801 if (status)
1802 return status;
1803
1804 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1805 return status;
1806}
1807
1808static int __devinit be_probe(struct pci_dev *pdev,
1809 const struct pci_device_id *pdev_id)
1810{
1811 int status = 0;
1812 struct be_adapter *adapter;
1813 struct net_device *netdev;
1814 struct be_ctrl_info *ctrl;
1815 u8 mac[ETH_ALEN];
1816
1817 status = pci_enable_device(pdev);
1818 if (status)
1819 goto do_none;
1820
1821 status = pci_request_regions(pdev, DRV_NAME);
1822 if (status)
1823 goto disable_dev;
1824 pci_set_master(pdev);
1825
1826 netdev = alloc_etherdev(sizeof(struct be_adapter));
1827 if (netdev == NULL) {
1828 status = -ENOMEM;
1829 goto rel_reg;
1830 }
1831 adapter = netdev_priv(netdev);
1832 adapter->pdev = pdev;
1833 pci_set_drvdata(pdev, adapter);
1834 adapter->netdev = netdev;
1835
1836 be_msix_enable(adapter);
1837
e930438c 1838 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
6b7c5b94
SP		 1839 if (!status) {
1840 netdev->features |= NETIF_F_HIGHDMA;
1841 } else {
e930438c 1842 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
6b7c5b94
SP		 1843 if (status) {
1844 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1845 goto free_netdev;
1846 }
1847 }
1848
1849 ctrl = &adapter->ctrl;
1850 status = be_ctrl_init(adapter);
1851 if (status)
1852 goto free_netdev;
1853
1854 status = be_stats_init(adapter);
1855 if (status)
1856 goto ctrl_clean;
1857
1858 status = be_hw_up(adapter);
1859 if (status)
1860 goto stats_clean;
1861
1862 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1863 true /* permanent */, 0);
1864 if (status)
1865 goto stats_clean;
1866 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1867
1868 INIT_DELAYED_WORK(&adapter->work, be_worker);
1869 be_netdev_init(netdev);
1870 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1871
1872 status = register_netdev(netdev);
1873 if (status != 0)
1874 goto stats_clean;
1875
c4ca2374 1876 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
6b7c5b94
SP		 1877 return 0;
1878
1879stats_clean:
1880 be_stats_cleanup(adapter);
1881ctrl_clean:
1882 be_ctrl_cleanup(adapter);
1883free_netdev:
1884 free_netdev(adapter->netdev);
1885rel_reg:
1886 pci_release_regions(pdev);
1887disable_dev:
1888 pci_disable_device(pdev);
1889do_none:
c4ca2374 1890 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
6b7c5b94
SP		 1891 return status;
1892}
1893
1894static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1895{
1896 struct be_adapter *adapter = pci_get_drvdata(pdev);
1897 struct net_device *netdev = adapter->netdev;
1898
1899 netif_device_detach(netdev);
1900 if (netif_running(netdev)) {
1901 rtnl_lock();
1902 be_close(netdev);
1903 rtnl_unlock();
1904 }
1905
1906 pci_save_state(pdev);
1907 pci_disable_device(pdev);
1908 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1909 return 0;
1910}
1911
1912static int be_resume(struct pci_dev *pdev)
1913{
1914 int status = 0;
1915 struct be_adapter *adapter = pci_get_drvdata(pdev);
1916 struct net_device *netdev = adapter->netdev;
1917
1918 netif_device_detach(netdev);
1919
1920 status = pci_enable_device(pdev);
1921 if (status)
1922 return status;
1923
1924 pci_set_power_state(pdev, 0);
1925 pci_restore_state(pdev);
1926
6b7c5b94
SP		 1927 if (netif_running(netdev)) {
1928 rtnl_lock();
1929 be_open(netdev);
1930 rtnl_unlock();
1931 }
1932 netif_device_attach(netdev);
1933 return 0;
1934}
1935
1936static struct pci_driver be_driver = {
1937 .name = DRV_NAME,
1938 .id_table = be_dev_ids,
1939 .probe = be_probe,
1940 .remove = be_remove,
1941 .suspend = be_suspend,
1942 .resume = be_resume
1943};
1944
1945static int __init be_init_module(void)
1946{
1947 if (rx_frag_size != 8192 && rx_frag_size != 4096
1948 && rx_frag_size != 2048) {
1949 printk(KERN_WARNING DRV_NAME
1950 " : Module param rx_frag_size must be 2048/4096/8192."
1951 " Using 2048\n");
1952 rx_frag_size = 2048;
1953 }
1954 /* Ensure rx_frag_size is aligned to chache line */
1955 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1956 printk(KERN_WARNING DRV_NAME
1957 " : Bad module param rx_frag_size. Using 2048\n");
1958 rx_frag_size = 2048;
1959 }
1960
1961 return pci_register_driver(&be_driver);
1962}
1963module_init(be_init_module);
1964
1965static void __exit be_exit_module(void)
1966{
1967 pci_unregister_driver(&be_driver);
1968}
1969module_exit(be_exit_module);
Linux kernel - Deliverables
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