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[net-next-2.6.git] / drivers / net / benet / be_main.c
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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"
19
20MODULE_VERSION(DRV_VER);
21MODULE_DEVICE_TABLE(pci, be_dev_ids);
22MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
23MODULE_AUTHOR("ServerEngines Corporation");
24MODULE_LICENSE("GPL");
25
26static unsigned int rx_frag_size = 2048;
27module_param(rx_frag_size, uint, S_IRUGO);
28MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
29
30#define BE_VENDOR_ID 0x19a2
31#define BE2_DEVICE_ID_1 0x0211
32static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
33 { PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) },
34 { 0 }
35};
36MODULE_DEVICE_TABLE(pci, be_dev_ids);
37
38static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
39{
40 struct be_dma_mem *mem = &q->dma_mem;
41 if (mem->va)
42 pci_free_consistent(adapter->pdev, mem->size,
43 mem->va, mem->dma);
44}
45
46static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
47 u16 len, u16 entry_size)
48{
49 struct be_dma_mem *mem = &q->dma_mem;
50
51 memset(q, 0, sizeof(*q));
52 q->len = len;
53 q->entry_size = entry_size;
54 mem->size = len * entry_size;
55 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
56 if (!mem->va)
57 return -1;
58 memset(mem->va, 0, mem->size);
59 return 0;
60}
61
62static inline void *queue_head_node(struct be_queue_info *q)
63{
64 return q->dma_mem.va + q->head * q->entry_size;
65}
66
67static inline void *queue_tail_node(struct be_queue_info *q)
68{
69 return q->dma_mem.va + q->tail * q->entry_size;
70}
71
72static inline void queue_head_inc(struct be_queue_info *q)
73{
74 index_inc(&q->head, q->len);
75}
76
77static inline void queue_tail_inc(struct be_queue_info *q)
78{
79 index_inc(&q->tail, q->len);
80}
81
82static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
83{
84 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
85 u32 reg = ioread32(addr);
86 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
87 if (!enabled && enable) {
88 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
89 } else if (enabled && !enable) {
90 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
91 } else {
92 printk(KERN_WARNING DRV_NAME
93 ": bad value in membar_int_ctrl reg=0x%x\n", reg);
94 return;
95 }
96 iowrite32(reg, addr);
97}
98
99static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
100{
101 u32 val = 0;
102 val |= qid & DB_RQ_RING_ID_MASK;
103 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
104 iowrite32(val, ctrl->db + DB_RQ_OFFSET);
105}
106
107static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
108{
109 u32 val = 0;
110 val |= qid & DB_TXULP_RING_ID_MASK;
111 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
112 iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
113}
114
115static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
116 bool arm, bool clear_int, u16 num_popped)
117{
118 u32 val = 0;
119 val |= qid & DB_EQ_RING_ID_MASK;
120 if (arm)
121 val |= 1 << DB_EQ_REARM_SHIFT;
122 if (clear_int)
123 val |= 1 << DB_EQ_CLR_SHIFT;
124 val |= 1 << DB_EQ_EVNT_SHIFT;
125 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
126 iowrite32(val, ctrl->db + DB_EQ_OFFSET);
127}
128
129static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
130 bool arm, u16 num_popped)
131{
132 u32 val = 0;
133 val |= qid & DB_CQ_RING_ID_MASK;
134 if (arm)
135 val |= 1 << DB_CQ_REARM_SHIFT;
136 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
137 iowrite32(val, ctrl->db + DB_CQ_OFFSET);
138}
139
140
141static int be_mac_addr_set(struct net_device *netdev, void *p)
142{
143 struct be_adapter *adapter = netdev_priv(netdev);
144 struct sockaddr *addr = p;
145 int status = 0;
146
147 if (netif_running(netdev)) {
148 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
149 adapter->pmac_id);
150 if (status)
151 return status;
152
153 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
154 adapter->if_handle, &adapter->pmac_id);
155 }
156
157 if (!status)
158 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
159
160 return status;
161}
162
163static void netdev_stats_update(struct be_adapter *adapter)
164{
165 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
166 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
167 struct be_port_rxf_stats *port_stats =
168 &rxf_stats->port[adapter->port_num];
169 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
170
171 dev_stats->rx_packets = port_stats->rx_total_frames;
172 dev_stats->tx_packets = port_stats->tx_unicastframes +
173 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
174 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
175 (u64) port_stats->rx_bytes_lsd;
176 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
177 (u64) port_stats->tx_bytes_lsd;
178
179 /* bad pkts received */
180 dev_stats->rx_errors = port_stats->rx_crc_errors +
181 port_stats->rx_alignment_symbol_errors +
182 port_stats->rx_in_range_errors +
183 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
184
185 /* packet transmit problems */
186 dev_stats->tx_errors = 0;
187
188 /* no space in linux buffers */
189 dev_stats->rx_dropped = 0;
190
191 /* no space available in linux */
192 dev_stats->tx_dropped = 0;
193
194 dev_stats->multicast = port_stats->tx_multicastframes;
195 dev_stats->collisions = 0;
196
197 /* detailed rx errors */
198 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
199 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
200 /* receive ring buffer overflow */
201 dev_stats->rx_over_errors = 0;
202 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
203
204 /* frame alignment errors */
205 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
206 /* receiver fifo overrun */
207 /* drops_no_pbuf is no per i/f, it's per BE card */
208 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
209 port_stats->rx_input_fifo_overflow +
210 rxf_stats->rx_drops_no_pbuf;
211 /* receiver missed packetd */
212 dev_stats->rx_missed_errors = 0;
213 /* detailed tx_errors */
214 dev_stats->tx_aborted_errors = 0;
215 dev_stats->tx_carrier_errors = 0;
216 dev_stats->tx_fifo_errors = 0;
217 dev_stats->tx_heartbeat_errors = 0;
218 dev_stats->tx_window_errors = 0;
219}
220
221static void be_link_status_update(struct be_adapter *adapter)
222{
223 struct be_link_info *prev = &adapter->link;
224 struct be_link_info now = { 0 };
225 struct net_device *netdev = adapter->netdev;
226
227 be_cmd_link_status_query(&adapter->ctrl, &now);
228
229 /* If link came up or went down */
230 if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
231 prev->speed == PHY_LINK_SPEED_ZERO)) {
232 if (now.speed == PHY_LINK_SPEED_ZERO) {
233 netif_stop_queue(netdev);
234 netif_carrier_off(netdev);
235 printk(KERN_INFO "%s: Link down\n", netdev->name);
236 } else {
237 netif_start_queue(netdev);
238 netif_carrier_on(netdev);
239 printk(KERN_INFO "%s: Link up\n", netdev->name);
240 }
241 }
242 *prev = now;
243}
244
245/* Update the EQ delay n BE based on the RX frags consumed / sec */
246static void be_rx_eqd_update(struct be_adapter *adapter)
247{
6b7c5b94
SP		 248 struct be_ctrl_info *ctrl = &adapter->ctrl;
249 struct be_eq_obj *rx_eq = &adapter->rx_eq;
250 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
4097f663
SP		 251 ulong now = jiffies;
252 u32 eqd;
253
254 if (!rx_eq->enable_aic)
255 return;
256
257 /* Wrapped around */
258 if (time_before(now, stats->rx_fps_jiffies)) {
259 stats->rx_fps_jiffies = now;
260 return;
261 }
6b7c5b94
SP		 262
263 /* Update once a second */
4097f663 264 if ((now - stats->rx_fps_jiffies) < HZ)
6b7c5b94
SP		 265 return;
266
267 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
4097f663 268 ((now - stats->rx_fps_jiffies) / HZ);
6b7c5b94 269
4097f663 270 stats->rx_fps_jiffies = now;
6b7c5b94
SP		 271 stats->be_prev_rx_frags = stats->be_rx_frags;
272 eqd = stats->be_rx_fps / 110000;
273 eqd = eqd << 3;
274 if (eqd > rx_eq->max_eqd)
275 eqd = rx_eq->max_eqd;
276 if (eqd < rx_eq->min_eqd)
277 eqd = rx_eq->min_eqd;
278 if (eqd < 10)
279 eqd = 0;
280 if (eqd != rx_eq->cur_eqd)
281 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
282
283 rx_eq->cur_eqd = eqd;
284}
285
6b7c5b94
SP		 286static struct net_device_stats *be_get_stats(struct net_device *dev)
287{
288 struct be_adapter *adapter = netdev_priv(dev);
289
290 return &adapter->stats.net_stats;
291}
292
4097f663
SP		 293static 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 u32 r;
307 r = (stats->be_tx_bytes - stats->be_tx_bytes_prev) /
308 ((now - stats->be_tx_jiffies) / HZ);
309 r = r / 1000000; /* M bytes/s */
310 stats->be_tx_rate = r * 8; /* M bits/s */
311 stats->be_tx_jiffies = now;
312 stats->be_tx_bytes_prev = stats->be_tx_bytes;
313 }
314}
315
6b7c5b94
SP		 316static void be_tx_stats_update(struct be_adapter *adapter,
317 u32 wrb_cnt, u32 copied, bool stopped)
318{
4097f663 319 struct be_drvr_stats *stats = drvr_stats(adapter);
6b7c5b94
SP		 320 stats->be_tx_reqs++;
321 stats->be_tx_wrbs += wrb_cnt;
322 stats->be_tx_bytes += copied;
323 if (stopped)
324 stats->be_tx_stops++;
6b7c5b94
SP		 325}
326
327/* Determine number of WRB entries needed to xmit data in an skb */
328static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
329{
330 int cnt = 0;
331 while (skb) {
332 if (skb->len > skb->data_len)
333 cnt++;
334 cnt += skb_shinfo(skb)->nr_frags;
335 skb = skb_shinfo(skb)->frag_list;
336 }
337 /* to account for hdr wrb */
338 cnt++;
339 if (cnt & 1) {
340 /* add a dummy to make it an even num */
341 cnt++;
342 *dummy = true;
343 } else
344 *dummy = false;
345 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
346 return cnt;
347}
348
349static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
350{
351 wrb->frag_pa_hi = upper_32_bits(addr);
352 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
353 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
354}
355
356static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
357 bool vlan, u32 wrb_cnt, u32 len)
358{
359 memset(hdr, 0, sizeof(*hdr));
360
361 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
362
363 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
364 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
365 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
366 hdr, skb_shinfo(skb)->gso_size);
367 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
368 if (is_tcp_pkt(skb))
369 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
370 else if (is_udp_pkt(skb))
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
372 }
373
374 if (vlan && vlan_tx_tag_present(skb)) {
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
376 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
377 hdr, vlan_tx_tag_get(skb));
378 }
379
380 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
382 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
383 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
384}
385
386
387static int make_tx_wrbs(struct be_adapter *adapter,
388 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
389{
390 u64 busaddr;
391 u32 i, copied = 0;
392 struct pci_dev *pdev = adapter->pdev;
393 struct sk_buff *first_skb = skb;
394 struct be_queue_info *txq = &adapter->tx_obj.q;
395 struct be_eth_wrb *wrb;
396 struct be_eth_hdr_wrb *hdr;
397
398 atomic_add(wrb_cnt, &txq->used);
399 hdr = queue_head_node(txq);
400 queue_head_inc(txq);
401
402 while (skb) {
403 if (skb->len > skb->data_len) {
404 int len = skb->len - skb->data_len;
405 busaddr = pci_map_single(pdev, skb->data, len,
406 PCI_DMA_TODEVICE);
407 wrb = queue_head_node(txq);
408 wrb_fill(wrb, busaddr, len);
409 be_dws_cpu_to_le(wrb, sizeof(*wrb));
410 queue_head_inc(txq);
411 copied += len;
412 }
413
414 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
415 struct skb_frag_struct *frag =
416 &skb_shinfo(skb)->frags[i];
417 busaddr = pci_map_page(pdev, frag->page,
418 frag->page_offset,
419 frag->size, PCI_DMA_TODEVICE);
420 wrb = queue_head_node(txq);
421 wrb_fill(wrb, busaddr, frag->size);
422 be_dws_cpu_to_le(wrb, sizeof(*wrb));
423 queue_head_inc(txq);
424 copied += frag->size;
425 }
426 skb = skb_shinfo(skb)->frag_list;
427 }
428
429 if (dummy_wrb) {
430 wrb = queue_head_node(txq);
431 wrb_fill(wrb, 0, 0);
432 be_dws_cpu_to_le(wrb, sizeof(*wrb));
433 queue_head_inc(txq);
434 }
435
436 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
437 wrb_cnt, copied);
438 be_dws_cpu_to_le(hdr, sizeof(*hdr));
439
440 return copied;
441}
442
443static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
444{
445 struct be_adapter *adapter = netdev_priv(netdev);
446 struct be_tx_obj *tx_obj = &adapter->tx_obj;
447 struct be_queue_info *txq = &tx_obj->q;
448 u32 wrb_cnt = 0, copied = 0;
449 u32 start = txq->head;
450 bool dummy_wrb, stopped = false;
451
452 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
453
454 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
455
456 /* record the sent skb in the sent_skb table */
457 BUG_ON(tx_obj->sent_skb_list[start]);
458 tx_obj->sent_skb_list[start] = skb;
459
460 /* Ensure that txq has space for the next skb; Else stop the queue
461 * *BEFORE* ringing the tx doorbell, so that we serialze the
462 * tx compls of the current transmit which'll wake up the queue
463 */
464 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
465 netif_stop_queue(netdev);
466 stopped = true;
467 }
468
469 be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
470
471 netdev->trans_start = jiffies;
472
473 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
474 return NETDEV_TX_OK;
475}
476
477static int be_change_mtu(struct net_device *netdev, int new_mtu)
478{
479 struct be_adapter *adapter = netdev_priv(netdev);
480 if (new_mtu < BE_MIN_MTU ||
481 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
482 dev_info(&adapter->pdev->dev,
483 "MTU must be between %d and %d bytes\n",
484 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
485 return -EINVAL;
486 }
487 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
488 netdev->mtu, new_mtu);
489 netdev->mtu = new_mtu;
490 return 0;
491}
492
493/*
494 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
495 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
496 * set the BE in promiscuous VLAN mode.
497 */
1ab1ab75 498static void be_vid_config(struct net_device *netdev)
6b7c5b94
SP		 499{
500 struct be_adapter *adapter = netdev_priv(netdev);
501 u16 vtag[BE_NUM_VLANS_SUPPORTED];
502 u16 ntags = 0, i;
503
504 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
505 /* Construct VLAN Table to give to HW */
506 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
507 if (adapter->vlan_tag[i]) {
508 vtag[ntags] = cpu_to_le16(i);
509 ntags++;
510 }
511 }
512 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
513 vtag, ntags, 1, 0);
514 } else {
515 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
516 NULL, 0, 1, 1);
517 }
518}
519
520static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
521{
522 struct be_adapter *adapter = netdev_priv(netdev);
523 struct be_eq_obj *rx_eq = &adapter->rx_eq;
524 struct be_eq_obj *tx_eq = &adapter->tx_eq;
525 struct be_ctrl_info *ctrl = &adapter->ctrl;
526
527 be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
528 be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
529 adapter->vlan_grp = grp;
530 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
531 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
532}
533
534static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
535{
536 struct be_adapter *adapter = netdev_priv(netdev);
537
538 adapter->num_vlans++;
539 adapter->vlan_tag[vid] = 1;
540
1ab1ab75 541 be_vid_config(netdev);
6b7c5b94
SP		 542}
543
544static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
545{
546 struct be_adapter *adapter = netdev_priv(netdev);
547
548 adapter->num_vlans--;
549 adapter->vlan_tag[vid] = 0;
550
551 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
1ab1ab75 552 be_vid_config(netdev);
6b7c5b94
SP		 553}
554
555static void be_set_multicast_filter(struct net_device *netdev)
556{
557 struct be_adapter *adapter = netdev_priv(netdev);
558 struct dev_mc_list *mc_ptr;
559 u8 mac_addr[32][ETH_ALEN];
560 int i = 0;
561
562 if (netdev->flags & IFF_ALLMULTI) {
563 /* set BE in Multicast promiscuous */
564 be_cmd_mcast_mac_set(&adapter->ctrl,
565 adapter->if_handle, NULL, 0, true);
566 return;
567 }
568
569 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
570 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
571 if (++i >= 32) {
572 be_cmd_mcast_mac_set(&adapter->ctrl,
573 adapter->if_handle, &mac_addr[0][0], i, false);
574 i = 0;
575 }
576
577 }
578
579 if (i) {
580 /* reset the promiscuous mode also. */
581 be_cmd_mcast_mac_set(&adapter->ctrl,
582 adapter->if_handle, &mac_addr[0][0], i, false);
583 }
584}
585
586static void be_set_multicast_list(struct net_device *netdev)
587{
588 struct be_adapter *adapter = netdev_priv(netdev);
589
590 if (netdev->flags & IFF_PROMISC) {
591 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
592 } else {
593 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
594 be_set_multicast_filter(netdev);
595 }
596}
597
4097f663 598static void be_rx_rate_update(struct be_adapter *adapter)
6b7c5b94 599{
4097f663
SP		 600 struct be_drvr_stats *stats = drvr_stats(adapter);
601 ulong now = jiffies;
6b7c5b94
SP		 602 u32 rate;
603
4097f663
SP		 604 /* Wrapped around */
605 if (time_before(now, stats->be_rx_jiffies)) {
606 stats->be_rx_jiffies = now;
607 return;
608 }
6b7c5b94
SP		 609
610 /* Update the rate once in two seconds */
4097f663 611 if ((now - stats->be_rx_jiffies) < 2 * HZ)
6b7c5b94
SP		 612 return;
613
614 rate = (stats->be_rx_bytes - stats->be_rx_bytes_prev) /
4097f663
SP		 615 ((now - stats->be_rx_jiffies) / HZ);
616 rate = rate / 1000000; /* MB/Sec */
617 stats->be_rx_rate = rate * 8; /* Mega Bits/Sec */
618 stats->be_rx_jiffies = now;
6b7c5b94
SP		 619 stats->be_rx_bytes_prev = stats->be_rx_bytes;
620}
621
4097f663
SP		 622static void be_rx_stats_update(struct be_adapter *adapter,
623 u32 pktsize, u16 numfrags)
624{
625 struct be_drvr_stats *stats = drvr_stats(adapter);
626
627 stats->be_rx_compl++;
628 stats->be_rx_frags += numfrags;
629 stats->be_rx_bytes += pktsize;
630}
631
6b7c5b94
SP		 632static struct be_rx_page_info *
633get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
634{
635 struct be_rx_page_info *rx_page_info;
636 struct be_queue_info *rxq = &adapter->rx_obj.q;
637
638 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
639 BUG_ON(!rx_page_info->page);
640
641 if (rx_page_info->last_page_user)
642 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
643 adapter->big_page_size, PCI_DMA_FROMDEVICE);
644
645 atomic_dec(&rxq->used);
646 return rx_page_info;
647}
648
649/* Throwaway the data in the Rx completion */
650static void be_rx_compl_discard(struct be_adapter *adapter,
651 struct be_eth_rx_compl *rxcp)
652{
653 struct be_queue_info *rxq = &adapter->rx_obj.q;
654 struct be_rx_page_info *page_info;
655 u16 rxq_idx, i, num_rcvd;
656
657 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
658 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
659
660 for (i = 0; i < num_rcvd; i++) {
661 page_info = get_rx_page_info(adapter, rxq_idx);
662 put_page(page_info->page);
663 memset(page_info, 0, sizeof(*page_info));
664 index_inc(&rxq_idx, rxq->len);
665 }
666}
667
668/*
669 * skb_fill_rx_data forms a complete skb for an ether frame
670 * indicated by rxcp.
671 */
672static void skb_fill_rx_data(struct be_adapter *adapter,
673 struct sk_buff *skb, 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 u32 pktsize, hdr_len, curr_frag_len;
679 u8 *start;
680
681 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
682 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
683 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
684
685 page_info = get_rx_page_info(adapter, rxq_idx);
686
687 start = page_address(page_info->page) + page_info->page_offset;
688 prefetch(start);
689
690 /* Copy data in the first descriptor of this completion */
691 curr_frag_len = min(pktsize, rx_frag_size);
692
693 /* Copy the header portion into skb_data */
694 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
695 memcpy(skb->data, start, hdr_len);
696 skb->len = curr_frag_len;
697 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
698 /* Complete packet has now been moved to data */
699 put_page(page_info->page);
700 skb->data_len = 0;
701 skb->tail += curr_frag_len;
702 } else {
703 skb_shinfo(skb)->nr_frags = 1;
704 skb_shinfo(skb)->frags[0].page = page_info->page;
705 skb_shinfo(skb)->frags[0].page_offset =
706 page_info->page_offset + hdr_len;
707 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
708 skb->data_len = curr_frag_len - hdr_len;
709 skb->tail += hdr_len;
710 }
711 memset(page_info, 0, sizeof(*page_info));
712
713 if (pktsize <= rx_frag_size) {
714 BUG_ON(num_rcvd != 1);
715 return;
716 }
717
718 /* More frags present for this completion */
719 pktsize -= curr_frag_len; /* account for above copied frag */
720 for (i = 1; i < num_rcvd; i++) {
721 index_inc(&rxq_idx, rxq->len);
722 page_info = get_rx_page_info(adapter, rxq_idx);
723
724 curr_frag_len = min(pktsize, rx_frag_size);
725
726 skb_shinfo(skb)->frags[i].page = page_info->page;
727 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
728 skb_shinfo(skb)->frags[i].size = curr_frag_len;
729 skb->len += curr_frag_len;
730 skb->data_len += curr_frag_len;
731 skb_shinfo(skb)->nr_frags++;
732 pktsize -= curr_frag_len;
733
734 memset(page_info, 0, sizeof(*page_info));
735 }
736
4097f663 737 be_rx_stats_update(adapter, pktsize, num_rcvd);
6b7c5b94
SP		 738 return;
739}
740
741/* Process the RX completion indicated by rxcp when LRO is disabled */
742static void be_rx_compl_process(struct be_adapter *adapter,
743 struct be_eth_rx_compl *rxcp)
744{
745 struct sk_buff *skb;
746 u32 vtp, vid;
747 int l4_cksm;
748
749 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
750 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
751
752 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
753 if (!skb) {
754 if (net_ratelimit())
755 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
756 be_rx_compl_discard(adapter, rxcp);
757 return;
758 }
759
760 skb_reserve(skb, NET_IP_ALIGN);
761
762 skb_fill_rx_data(adapter, skb, rxcp);
763
764 if (l4_cksm && adapter->rx_csum)
765 skb->ip_summed = CHECKSUM_UNNECESSARY;
766 else
767 skb->ip_summed = CHECKSUM_NONE;
768
769 skb->truesize = skb->len + sizeof(struct sk_buff);
770 skb->protocol = eth_type_trans(skb, adapter->netdev);
771 skb->dev = adapter->netdev;
772
773 if (vtp) {
774 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
775 kfree_skb(skb);
776 return;
777 }
778 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
779 vid = be16_to_cpu(vid);
780 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
781 } else {
782 netif_receive_skb(skb);
783 }
784
785 adapter->netdev->last_rx = jiffies;
786
787 return;
788}
789
790/* Process the RX completion indicated by rxcp when LRO is enabled */
791static void be_rx_compl_process_lro(struct be_adapter *adapter,
792 struct be_eth_rx_compl *rxcp)
793{
794 struct be_rx_page_info *page_info;
795 struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
796 struct be_queue_info *rxq = &adapter->rx_obj.q;
797 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
798 u16 i, rxq_idx = 0, vid;
799
800 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
801 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
802 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
803 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
804
805 remaining = pkt_size;
806 for (i = 0; i < num_rcvd; i++) {
807 page_info = get_rx_page_info(adapter, rxq_idx);
808
809 curr_frag_len = min(remaining, rx_frag_size);
810
811 rx_frags[i].page = page_info->page;
812 rx_frags[i].page_offset = page_info->page_offset;
813 rx_frags[i].size = curr_frag_len;
814 remaining -= curr_frag_len;
815
816 index_inc(&rxq_idx, rxq->len);
817
818 memset(page_info, 0, sizeof(*page_info));
819 }
820
821 if (likely(!vlanf)) {
822 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
823 pkt_size, NULL, 0);
824 } else {
825 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
826 vid = be16_to_cpu(vid);
827
828 if (!adapter->vlan_grp || adapter->num_vlans == 0)
829 return;
830
831 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
832 rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
833 vid, NULL, 0);
834 }
835
4097f663 836 be_rx_stats_update(adapter, pkt_size, num_rcvd);
6b7c5b94
SP		 837 return;
838}
839
840static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
841{
842 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
843
844 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
845 return NULL;
846
847 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
848
849 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
850
851 queue_tail_inc(&adapter->rx_obj.cq);
852 return rxcp;
853}
854
855static inline struct page *be_alloc_pages(u32 size)
856{
857 gfp_t alloc_flags = GFP_ATOMIC;
858 u32 order = get_order(size);
859 if (order > 0)
860 alloc_flags |= __GFP_COMP;
861 return alloc_pages(alloc_flags, order);
862}
863
864/*
865 * Allocate a page, split it to fragments of size rx_frag_size and post as
866 * receive buffers to BE
867 */
868static void be_post_rx_frags(struct be_adapter *adapter)
869{
870 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
871 struct be_rx_page_info *page_info = NULL;
872 struct be_queue_info *rxq = &adapter->rx_obj.q;
873 struct page *pagep = NULL;
874 struct be_eth_rx_d *rxd;
875 u64 page_dmaaddr = 0, frag_dmaaddr;
876 u32 posted, page_offset = 0;
877
6b7c5b94
SP		 878 page_info = &page_info_tbl[rxq->head];
879 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
880 if (!pagep) {
881 pagep = be_alloc_pages(adapter->big_page_size);
882 if (unlikely(!pagep)) {
883 drvr_stats(adapter)->be_ethrx_post_fail++;
884 break;
885 }
886 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
887 adapter->big_page_size,
888 PCI_DMA_FROMDEVICE);
889 page_info->page_offset = 0;
890 } else {
891 get_page(pagep);
892 page_info->page_offset = page_offset + rx_frag_size;
893 }
894 page_offset = page_info->page_offset;
895 page_info->page = pagep;
896 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
897 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
898
899 rxd = queue_head_node(rxq);
900 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
901 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
902 queue_head_inc(rxq);
903
904 /* Any space left in the current big page for another frag? */
905 if ((page_offset + rx_frag_size + rx_frag_size) >
906 adapter->big_page_size) {
907 pagep = NULL;
908 page_info->last_page_user = true;
909 }
910 page_info = &page_info_tbl[rxq->head];
911 }
912 if (pagep)
913 page_info->last_page_user = true;
914
915 if (posted) {
6b7c5b94 916 atomic_add(posted, &rxq->used);
ea1dae11
SP		 917 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
918 } else if (atomic_read(&rxq->used) == 0) {
919 /* Let be_worker replenish when memory is available */
920 adapter->rx_post_starved = true;
6b7c5b94
SP		 921 }
922
923 return;
924}
925
926static struct be_eth_tx_compl *
927be_tx_compl_get(struct be_adapter *adapter)
928{
929 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
930 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
931
932 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
933 return NULL;
934
935 be_dws_le_to_cpu(txcp, sizeof(*txcp));
936
937 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
938
939 queue_tail_inc(tx_cq);
940 return txcp;
941}
942
943static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
944{
945 struct be_queue_info *txq = &adapter->tx_obj.q;
946 struct be_eth_wrb *wrb;
947 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
948 struct sk_buff *sent_skb;
949 u64 busaddr;
950 u16 cur_index, num_wrbs = 0;
951
952 cur_index = txq->tail;
953 sent_skb = sent_skbs[cur_index];
954 BUG_ON(!sent_skb);
955 sent_skbs[cur_index] = NULL;
956
957 do {
958 cur_index = txq->tail;
959 wrb = queue_tail_node(txq);
960 be_dws_le_to_cpu(wrb, sizeof(*wrb));
961 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
962 if (busaddr != 0) {
963 pci_unmap_single(adapter->pdev, busaddr,
964 wrb->frag_len, PCI_DMA_TODEVICE);
965 }
966 num_wrbs++;
967 queue_tail_inc(txq);
968 } while (cur_index != last_index);
969
970 atomic_sub(num_wrbs, &txq->used);
971
972 kfree_skb(sent_skb);
973}
974
975static void be_rx_q_clean(struct be_adapter *adapter)
976{
977 struct be_rx_page_info *page_info;
978 struct be_queue_info *rxq = &adapter->rx_obj.q;
979 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
980 struct be_eth_rx_compl *rxcp;
981 u16 tail;
982
983 /* First cleanup pending rx completions */
984 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
985 be_rx_compl_discard(adapter, rxcp);
986 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
987 }
988
989 /* Then free posted rx buffer that were not used */
990 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
991 for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
992 page_info = get_rx_page_info(adapter, tail);
993 put_page(page_info->page);
994 memset(page_info, 0, sizeof(*page_info));
995 }
996 BUG_ON(atomic_read(&rxq->used));
997}
998
999static void be_tx_q_clean(struct be_adapter *adapter)
1000{
1001 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1002 struct sk_buff *sent_skb;
1003 struct be_queue_info *txq = &adapter->tx_obj.q;
1004 u16 last_index;
1005 bool dummy_wrb;
1006
1007 while (atomic_read(&txq->used)) {
1008 sent_skb = sent_skbs[txq->tail];
1009 last_index = txq->tail;
1010 index_adv(&last_index,
1011 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1012 be_tx_compl_process(adapter, last_index);
1013 }
1014}
1015
1016static void be_tx_queues_destroy(struct be_adapter *adapter)
1017{
1018 struct be_queue_info *q;
1019
1020 q = &adapter->tx_obj.q;
1021 if (q->created)
1022 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1023 be_queue_free(adapter, q);
1024
1025 q = &adapter->tx_obj.cq;
1026 if (q->created)
1027 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1028 be_queue_free(adapter, q);
1029
1030 /* No more tx completions can be rcvd now; clean up if there are
1031 * any pending completions or pending tx requests */
1032 be_tx_q_clean(adapter);
1033
1034 q = &adapter->tx_eq.q;
1035 if (q->created)
1036 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1037 be_queue_free(adapter, q);
1038}
1039
1040static int be_tx_queues_create(struct be_adapter *adapter)
1041{
1042 struct be_queue_info *eq, *q, *cq;
1043
1044 adapter->tx_eq.max_eqd = 0;
1045 adapter->tx_eq.min_eqd = 0;
1046 adapter->tx_eq.cur_eqd = 96;
1047 adapter->tx_eq.enable_aic = false;
1048 /* Alloc Tx Event queue */
1049 eq = &adapter->tx_eq.q;
1050 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1051 return -1;
1052
1053 /* Ask BE to create Tx Event queue */
1054 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1055 goto tx_eq_free;
1056 /* Alloc TX eth compl queue */
1057 cq = &adapter->tx_obj.cq;
1058 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1059 sizeof(struct be_eth_tx_compl)))
1060 goto tx_eq_destroy;
1061
1062 /* Ask BE to create Tx eth compl queue */
1063 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1064 goto tx_cq_free;
1065
1066 /* Alloc TX eth queue */
1067 q = &adapter->tx_obj.q;
1068 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1069 goto tx_cq_destroy;
1070
1071 /* Ask BE to create Tx eth queue */
1072 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1073 goto tx_q_free;
1074 return 0;
1075
1076tx_q_free:
1077 be_queue_free(adapter, q);
1078tx_cq_destroy:
1079 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1080tx_cq_free:
1081 be_queue_free(adapter, cq);
1082tx_eq_destroy:
1083 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1084tx_eq_free:
1085 be_queue_free(adapter, eq);
1086 return -1;
1087}
1088
1089static void be_rx_queues_destroy(struct be_adapter *adapter)
1090{
1091 struct be_queue_info *q;
1092
1093 q = &adapter->rx_obj.q;
1094 if (q->created) {
1095 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1096 be_rx_q_clean(adapter);
1097 }
1098 be_queue_free(adapter, q);
1099
1100 q = &adapter->rx_obj.cq;
1101 if (q->created)
1102 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1103 be_queue_free(adapter, q);
1104
1105 q = &adapter->rx_eq.q;
1106 if (q->created)
1107 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1108 be_queue_free(adapter, q);
1109}
1110
1111static int be_rx_queues_create(struct be_adapter *adapter)
1112{
1113 struct be_queue_info *eq, *q, *cq;
1114 int rc;
1115
1116 adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1117 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1118 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1119 adapter->rx_eq.min_eqd = 0;
1120 adapter->rx_eq.cur_eqd = 0;
1121 adapter->rx_eq.enable_aic = true;
1122
1123 /* Alloc Rx Event queue */
1124 eq = &adapter->rx_eq.q;
1125 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1126 sizeof(struct be_eq_entry));
1127 if (rc)
1128 return rc;
1129
1130 /* Ask BE to create Rx Event queue */
1131 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1132 if (rc)
1133 goto rx_eq_free;
1134
1135 /* Alloc RX eth compl queue */
1136 cq = &adapter->rx_obj.cq;
1137 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1138 sizeof(struct be_eth_rx_compl));
1139 if (rc)
1140 goto rx_eq_destroy;
1141
1142 /* Ask BE to create Rx eth compl queue */
1143 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1144 if (rc)
1145 goto rx_cq_free;
1146
1147 /* Alloc RX eth queue */
1148 q = &adapter->rx_obj.q;
1149 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1150 if (rc)
1151 goto rx_cq_destroy;
1152
1153 /* Ask BE to create Rx eth queue */
1154 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1155 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1156 if (rc)
1157 goto rx_q_free;
1158
1159 return 0;
1160rx_q_free:
1161 be_queue_free(adapter, q);
1162rx_cq_destroy:
1163 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1164rx_cq_free:
1165 be_queue_free(adapter, cq);
1166rx_eq_destroy:
1167 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1168rx_eq_free:
1169 be_queue_free(adapter, eq);
1170 return rc;
1171}
1172static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1173{
1174 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1175 u32 evt = entry->evt;
1176
1177 if (!evt)
1178 return false;
1179
1180 evt = le32_to_cpu(evt);
1181 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1182 entry->evt = 0;
1183 queue_tail_inc(&eq_obj->q);
1184 return true;
1185}
1186
1187static int event_handle(struct be_ctrl_info *ctrl,
1188 struct be_eq_obj *eq_obj)
1189{
1190 u16 rid = 0, num = 0;
1191
1192 while (event_get(eq_obj, &rid))
1193 num++;
1194
1195 /* We can see an interrupt and no event */
1196 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1197 if (num)
1198 napi_schedule(&eq_obj->napi);
1199
1200 return num;
1201}
1202
1203static irqreturn_t be_intx(int irq, void *dev)
1204{
1205 struct be_adapter *adapter = dev;
1206 struct be_ctrl_info *ctrl = &adapter->ctrl;
1207 int rx, tx;
1208
1209 tx = event_handle(ctrl, &adapter->tx_eq);
1210 rx = event_handle(ctrl, &adapter->rx_eq);
1211
1212 if (rx || tx)
1213 return IRQ_HANDLED;
1214 else
1215 return IRQ_NONE;
1216}
1217
1218static irqreturn_t be_msix_rx(int irq, void *dev)
1219{
1220 struct be_adapter *adapter = dev;
1221
1222 event_handle(&adapter->ctrl, &adapter->rx_eq);
1223
1224 return IRQ_HANDLED;
1225}
1226
1227static irqreturn_t be_msix_tx(int irq, void *dev)
1228{
1229 struct be_adapter *adapter = dev;
1230
1231 event_handle(&adapter->ctrl, &adapter->tx_eq);
1232
1233 return IRQ_HANDLED;
1234}
1235
1236static inline bool do_lro(struct be_adapter *adapter,
1237 struct be_eth_rx_compl *rxcp)
1238{
1239 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1240 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1241
1242 if (err)
1243 drvr_stats(adapter)->be_rxcp_err++;
1244
1245 return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1246 false : true;
1247}
1248
1249int be_poll_rx(struct napi_struct *napi, int budget)
1250{
1251 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1252 struct be_adapter *adapter =
1253 container_of(rx_eq, struct be_adapter, rx_eq);
1254 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1255 struct be_eth_rx_compl *rxcp;
1256 u32 work_done;
1257
1258 for (work_done = 0; work_done < budget; work_done++) {
1259 rxcp = be_rx_compl_get(adapter);
1260 if (!rxcp)
1261 break;
1262
1263 if (do_lro(adapter, rxcp))
1264 be_rx_compl_process_lro(adapter, rxcp);
1265 else
1266 be_rx_compl_process(adapter, rxcp);
1267 }
1268
1269 lro_flush_all(&adapter->rx_obj.lro_mgr);
1270
1271 /* Refill the queue */
1272 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1273 be_post_rx_frags(adapter);
1274
1275 /* All consumed */
1276 if (work_done < budget) {
1277 napi_complete(napi);
1278 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1279 } else {
1280 /* More to be consumed; continue with interrupts disabled */
1281 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1282 }
1283 return work_done;
1284}
1285
1286/* For TX we don't honour budget; consume everything */
1287int be_poll_tx(struct napi_struct *napi, int budget)
1288{
1289 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1290 struct be_adapter *adapter =
1291 container_of(tx_eq, struct be_adapter, tx_eq);
1292 struct be_tx_obj *tx_obj = &adapter->tx_obj;
1293 struct be_queue_info *tx_cq = &tx_obj->cq;
1294 struct be_queue_info *txq = &tx_obj->q;
1295 struct be_eth_tx_compl *txcp;
1296 u32 num_cmpl = 0;
1297 u16 end_idx;
1298
1299 while ((txcp = be_tx_compl_get(adapter))) {
1300 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1301 wrb_index, txcp);
1302 be_tx_compl_process(adapter, end_idx);
1303 num_cmpl++;
1304 }
1305
1306 /* As Tx wrbs have been freed up, wake up netdev queue if
1307 * it was stopped due to lack of tx wrbs.
1308 */
1309 if (netif_queue_stopped(adapter->netdev) &&
1310 atomic_read(&txq->used) < txq->len / 2) {
1311 netif_wake_queue(adapter->netdev);
1312 }
1313
1314 napi_complete(napi);
1315
1316 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1317
1318 drvr_stats(adapter)->be_tx_events++;
1319 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1320
1321 return 1;
1322}
1323
ea1dae11
SP		 1324static void be_worker(struct work_struct *work)
1325{
1326 struct be_adapter *adapter =
1327 container_of(work, struct be_adapter, work.work);
1328 int status;
1329
1330 /* Check link */
1331 be_link_status_update(adapter);
1332
1333 /* Get Stats */
1334 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1335 if (!status)
1336 netdev_stats_update(adapter);
1337
1338 /* Set EQ delay */
1339 be_rx_eqd_update(adapter);
1340
4097f663
SP		 1341 be_tx_rate_update(adapter);
1342 be_rx_rate_update(adapter);
1343
ea1dae11
SP		 1344 if (adapter->rx_post_starved) {
1345 adapter->rx_post_starved = false;
1346 be_post_rx_frags(adapter);
1347 }
1348
1349 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1350}
1351
6b7c5b94
SP		 1352static void be_msix_enable(struct be_adapter *adapter)
1353{
1354 int i, status;
1355
1356 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1357 adapter->msix_entries[i].entry = i;
1358
1359 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1360 BE_NUM_MSIX_VECTORS);
1361 if (status == 0)
1362 adapter->msix_enabled = true;
1363 return;
1364}
1365
1366static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1367{
1368 return adapter->msix_entries[eq_id -
1369 8 * adapter->ctrl.pci_func].vector;
1370}
1371
1372static int be_msix_register(struct be_adapter *adapter)
1373{
1374 struct net_device *netdev = adapter->netdev;
1375 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1376 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1377 int status, vec;
1378
1379 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1380 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1381 status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1382 if (status)
1383 goto err;
1384
1385 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1386 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1387 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1388 if (status) { /* Free TX IRQ */
1389 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1390 free_irq(vec, adapter);
1391 goto err;
1392 }
1393 return 0;
1394err:
1395 dev_warn(&adapter->pdev->dev,
1396 "MSIX Request IRQ failed - err %d\n", status);
1397 pci_disable_msix(adapter->pdev);
1398 adapter->msix_enabled = false;
1399 return status;
1400}
1401
1402static int be_irq_register(struct be_adapter *adapter)
1403{
1404 struct net_device *netdev = adapter->netdev;
1405 int status;
1406
1407 if (adapter->msix_enabled) {
1408 status = be_msix_register(adapter);
1409 if (status == 0)
1410 goto done;
1411 }
1412
1413 /* INTx */
1414 netdev->irq = adapter->pdev->irq;
1415 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1416 adapter);
1417 if (status) {
1418 dev_err(&adapter->pdev->dev,
1419 "INTx request IRQ failed - err %d\n", status);
1420 return status;
1421 }
1422done:
1423 adapter->isr_registered = true;
1424 return 0;
1425}
1426
1427static void be_irq_unregister(struct be_adapter *adapter)
1428{
1429 struct net_device *netdev = adapter->netdev;
1430 int vec;
1431
1432 if (!adapter->isr_registered)
1433 return;
1434
1435 /* INTx */
1436 if (!adapter->msix_enabled) {
1437 free_irq(netdev->irq, adapter);
1438 goto done;
1439 }
1440
1441 /* MSIx */
1442 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1443 free_irq(vec, adapter);
1444 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1445 free_irq(vec, adapter);
1446done:
1447 adapter->isr_registered = false;
1448 return;
1449}
1450
1451static int be_open(struct net_device *netdev)
1452{
1453 struct be_adapter *adapter = netdev_priv(netdev);
1454 struct be_ctrl_info *ctrl = &adapter->ctrl;
1455 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1456 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1457 u32 if_flags;
1458 int status;
1459
1460 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1461 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1462 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1463 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1464 false/* pmac_invalid */, &adapter->if_handle,
1465 &adapter->pmac_id);
1466 if (status != 0)
1467 goto do_none;
1468
1ab1ab75
SP		 1469 be_vid_config(netdev);
1470
6b7c5b94
SP		 1471 status = be_cmd_set_flow_control(ctrl, true, true);
1472 if (status != 0)
1473 goto if_destroy;
1474
1475 status = be_tx_queues_create(adapter);
1476 if (status != 0)
1477 goto if_destroy;
1478
1479 status = be_rx_queues_create(adapter);
1480 if (status != 0)
1481 goto tx_qs_destroy;
1482
1483 /* First time posting */
1484 be_post_rx_frags(adapter);
1485
1486 napi_enable(&rx_eq->napi);
1487 napi_enable(&tx_eq->napi);
1488
1489 be_irq_register(adapter);
1490
1491 be_intr_set(ctrl, true);
1492
1493 /* The evt queues are created in the unarmed state; arm them */
1494 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1495 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1496
1497 /* The compl queues are created in the unarmed state; arm them */
1498 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1499 be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1500
1501 be_link_status_update(adapter);
1502
1503 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1504 return 0;
1505
1506tx_qs_destroy:
1507 be_tx_queues_destroy(adapter);
1508if_destroy:
1509 be_cmd_if_destroy(ctrl, adapter->if_handle);
1510do_none:
1511 return status;
1512}
1513
1514static int be_close(struct net_device *netdev)
1515{
1516 struct be_adapter *adapter = netdev_priv(netdev);
1517 struct be_ctrl_info *ctrl = &adapter->ctrl;
1518 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1519 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1520 int vec;
1521
1522 cancel_delayed_work(&adapter->work);
1523
1524 netif_stop_queue(netdev);
1525 netif_carrier_off(netdev);
1526 adapter->link.speed = PHY_LINK_SPEED_ZERO;
1527
1528 be_intr_set(ctrl, false);
1529
1530 if (adapter->msix_enabled) {
1531 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1532 synchronize_irq(vec);
1533 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1534 synchronize_irq(vec);
1535 } else {
1536 synchronize_irq(netdev->irq);
1537 }
1538 be_irq_unregister(adapter);
1539
1540 napi_disable(&rx_eq->napi);
1541 napi_disable(&tx_eq->napi);
1542
1543 be_rx_queues_destroy(adapter);
1544 be_tx_queues_destroy(adapter);
1545
1546 be_cmd_if_destroy(ctrl, adapter->if_handle);
1547 return 0;
1548}
1549
1550static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1551 void **ip_hdr, void **tcpudp_hdr,
1552 u64 *hdr_flags, void *priv)
1553{
1554 struct ethhdr *eh;
1555 struct vlan_ethhdr *veh;
1556 struct iphdr *iph;
1557 u8 *va = page_address(frag->page) + frag->page_offset;
1558 unsigned long ll_hlen;
1559
1560 prefetch(va);
1561 eh = (struct ethhdr *)va;
1562 *mac_hdr = eh;
1563 ll_hlen = ETH_HLEN;
1564 if (eh->h_proto != htons(ETH_P_IP)) {
1565 if (eh->h_proto == htons(ETH_P_8021Q)) {
1566 veh = (struct vlan_ethhdr *)va;
1567 if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1568 return -1;
1569
1570 ll_hlen += VLAN_HLEN;
1571 } else {
1572 return -1;
1573 }
1574 }
1575 *hdr_flags = LRO_IPV4;
1576 iph = (struct iphdr *)(va + ll_hlen);
1577 *ip_hdr = iph;
1578 if (iph->protocol != IPPROTO_TCP)
1579 return -1;
1580 *hdr_flags |= LRO_TCP;
1581 *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1582
1583 return 0;
1584}
1585
1586static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1587{
1588 struct net_lro_mgr *lro_mgr;
1589
1590 lro_mgr = &adapter->rx_obj.lro_mgr;
1591 lro_mgr->dev = netdev;
1592 lro_mgr->features = LRO_F_NAPI;
1593 lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1594 lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1595 lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1596 lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1597 lro_mgr->get_frag_header = be_get_frag_header;
1598 lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1599}
1600
1601static struct net_device_ops be_netdev_ops = {
1602 .ndo_open = be_open,
1603 .ndo_stop = be_close,
1604 .ndo_start_xmit = be_xmit,
1605 .ndo_get_stats = be_get_stats,
1606 .ndo_set_rx_mode = be_set_multicast_list,
1607 .ndo_set_mac_address = be_mac_addr_set,
1608 .ndo_change_mtu = be_change_mtu,
1609 .ndo_validate_addr = eth_validate_addr,
1610 .ndo_vlan_rx_register = be_vlan_register,
1611 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1612 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1613};
1614
1615static void be_netdev_init(struct net_device *netdev)
1616{
1617 struct be_adapter *adapter = netdev_priv(netdev);
1618
1619 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1620 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1621 NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1622
1623 netdev->flags |= IFF_MULTICAST;
1624
1625 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1626
1627 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1628
1629 be_lro_init(adapter, netdev);
1630
1631 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1632 BE_NAPI_WEIGHT);
1633 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1634 BE_NAPI_WEIGHT);
1635
1636 netif_carrier_off(netdev);
1637 netif_stop_queue(netdev);
1638}
1639
1640static void be_unmap_pci_bars(struct be_adapter *adapter)
1641{
1642 struct be_ctrl_info *ctrl = &adapter->ctrl;
1643 if (ctrl->csr)
1644 iounmap(ctrl->csr);
1645 if (ctrl->db)
1646 iounmap(ctrl->db);
1647 if (ctrl->pcicfg)
1648 iounmap(ctrl->pcicfg);
1649}
1650
1651static int be_map_pci_bars(struct be_adapter *adapter)
1652{
1653 u8 __iomem *addr;
1654
1655 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1656 pci_resource_len(adapter->pdev, 2));
1657 if (addr == NULL)
1658 return -ENOMEM;
1659 adapter->ctrl.csr = addr;
1660
1661 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1662 128 * 1024);
1663 if (addr == NULL)
1664 goto pci_map_err;
1665 adapter->ctrl.db = addr;
1666
1667 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1668 pci_resource_len(adapter->pdev, 1));
1669 if (addr == NULL)
1670 goto pci_map_err;
1671 adapter->ctrl.pcicfg = addr;
1672
1673 return 0;
1674pci_map_err:
1675 be_unmap_pci_bars(adapter);
1676 return -ENOMEM;
1677}
1678
1679
1680static void be_ctrl_cleanup(struct be_adapter *adapter)
1681{
1682 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1683
1684 be_unmap_pci_bars(adapter);
1685
1686 if (mem->va)
1687 pci_free_consistent(adapter->pdev, mem->size,
1688 mem->va, mem->dma);
1689}
1690
1691/* Initialize the mbox required to send cmds to BE */
1692static int be_ctrl_init(struct be_adapter *adapter)
1693{
1694 struct be_ctrl_info *ctrl = &adapter->ctrl;
1695 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1696 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1697 int status;
1698 u32 val;
1699
1700 status = be_map_pci_bars(adapter);
1701 if (status)
1702 return status;
1703
1704 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1705 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1706 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1707 if (!mbox_mem_alloc->va) {
1708 be_unmap_pci_bars(adapter);
1709 return -1;
1710 }
1711 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1712 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1713 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1714 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1715 spin_lock_init(&ctrl->cmd_lock);
1716
1717 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1718 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1719 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1720 return 0;
1721}
1722
1723static void be_stats_cleanup(struct be_adapter *adapter)
1724{
1725 struct be_stats_obj *stats = &adapter->stats;
1726 struct be_dma_mem *cmd = &stats->cmd;
1727
1728 if (cmd->va)
1729 pci_free_consistent(adapter->pdev, cmd->size,
1730 cmd->va, cmd->dma);
1731}
1732
1733static int be_stats_init(struct be_adapter *adapter)
1734{
1735 struct be_stats_obj *stats = &adapter->stats;
1736 struct be_dma_mem *cmd = &stats->cmd;
1737
1738 cmd->size = sizeof(struct be_cmd_req_get_stats);
1739 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1740 if (cmd->va == NULL)
1741 return -1;
1742 return 0;
1743}
1744
1745static void __devexit be_remove(struct pci_dev *pdev)
1746{
1747 struct be_adapter *adapter = pci_get_drvdata(pdev);
1748 if (!adapter)
1749 return;
1750
1751 unregister_netdev(adapter->netdev);
1752
1753 be_stats_cleanup(adapter);
1754
1755 be_ctrl_cleanup(adapter);
1756
1757 if (adapter->msix_enabled) {
1758 pci_disable_msix(adapter->pdev);
1759 adapter->msix_enabled = false;
1760 }
1761
1762 pci_set_drvdata(pdev, NULL);
1763 pci_release_regions(pdev);
1764 pci_disable_device(pdev);
1765
1766 free_netdev(adapter->netdev);
1767}
1768
1769static int be_hw_up(struct be_adapter *adapter)
1770{
1771 struct be_ctrl_info *ctrl = &adapter->ctrl;
1772 int status;
1773
1774 status = be_cmd_POST(ctrl);
1775 if (status)
1776 return status;
1777
1778 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1779 if (status)
1780 return status;
1781
1782 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1783 return status;
1784}
1785
1786static int __devinit be_probe(struct pci_dev *pdev,
1787 const struct pci_device_id *pdev_id)
1788{
1789 int status = 0;
1790 struct be_adapter *adapter;
1791 struct net_device *netdev;
1792 struct be_ctrl_info *ctrl;
1793 u8 mac[ETH_ALEN];
1794
1795 status = pci_enable_device(pdev);
1796 if (status)
1797 goto do_none;
1798
1799 status = pci_request_regions(pdev, DRV_NAME);
1800 if (status)
1801 goto disable_dev;
1802 pci_set_master(pdev);
1803
1804 netdev = alloc_etherdev(sizeof(struct be_adapter));
1805 if (netdev == NULL) {
1806 status = -ENOMEM;
1807 goto rel_reg;
1808 }
1809 adapter = netdev_priv(netdev);
1810 adapter->pdev = pdev;
1811 pci_set_drvdata(pdev, adapter);
1812 adapter->netdev = netdev;
1813
1814 be_msix_enable(adapter);
1815
1816 status = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
1817 if (!status) {
1818 netdev->features |= NETIF_F_HIGHDMA;
1819 } else {
1820 status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1821 if (status) {
1822 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1823 goto free_netdev;
1824 }
1825 }
1826
1827 ctrl = &adapter->ctrl;
1828 status = be_ctrl_init(adapter);
1829 if (status)
1830 goto free_netdev;
1831
1832 status = be_stats_init(adapter);
1833 if (status)
1834 goto ctrl_clean;
1835
1836 status = be_hw_up(adapter);
1837 if (status)
1838 goto stats_clean;
1839
1840 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1841 true /* permanent */, 0);
1842 if (status)
1843 goto stats_clean;
1844 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1845
1846 INIT_DELAYED_WORK(&adapter->work, be_worker);
1847 be_netdev_init(netdev);
1848 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1849
1850 status = register_netdev(netdev);
1851 if (status != 0)
1852 goto stats_clean;
1853
1854 dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num);
1855 return 0;
1856
1857stats_clean:
1858 be_stats_cleanup(adapter);
1859ctrl_clean:
1860 be_ctrl_cleanup(adapter);
1861free_netdev:
1862 free_netdev(adapter->netdev);
1863rel_reg:
1864 pci_release_regions(pdev);
1865disable_dev:
1866 pci_disable_device(pdev);
1867do_none:
1868 dev_warn(&pdev->dev, BE_NAME " initialization failed\n");
1869 return status;
1870}
1871
1872static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1873{
1874 struct be_adapter *adapter = pci_get_drvdata(pdev);
1875 struct net_device *netdev = adapter->netdev;
1876
1877 netif_device_detach(netdev);
1878 if (netif_running(netdev)) {
1879 rtnl_lock();
1880 be_close(netdev);
1881 rtnl_unlock();
1882 }
1883
1884 pci_save_state(pdev);
1885 pci_disable_device(pdev);
1886 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1887 return 0;
1888}
1889
1890static int be_resume(struct pci_dev *pdev)
1891{
1892 int status = 0;
1893 struct be_adapter *adapter = pci_get_drvdata(pdev);
1894 struct net_device *netdev = adapter->netdev;
1895
1896 netif_device_detach(netdev);
1897
1898 status = pci_enable_device(pdev);
1899 if (status)
1900 return status;
1901
1902 pci_set_power_state(pdev, 0);
1903 pci_restore_state(pdev);
1904
6b7c5b94
SP		 1905 if (netif_running(netdev)) {
1906 rtnl_lock();
1907 be_open(netdev);
1908 rtnl_unlock();
1909 }
1910 netif_device_attach(netdev);
1911 return 0;
1912}
1913
1914static struct pci_driver be_driver = {
1915 .name = DRV_NAME,
1916 .id_table = be_dev_ids,
1917 .probe = be_probe,
1918 .remove = be_remove,
1919 .suspend = be_suspend,
1920 .resume = be_resume
1921};
1922
1923static int __init be_init_module(void)
1924{
1925 if (rx_frag_size != 8192 && rx_frag_size != 4096
1926 && rx_frag_size != 2048) {
1927 printk(KERN_WARNING DRV_NAME
1928 " : Module param rx_frag_size must be 2048/4096/8192."
1929 " Using 2048\n");
1930 rx_frag_size = 2048;
1931 }
1932 /* Ensure rx_frag_size is aligned to chache line */
1933 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1934 printk(KERN_WARNING DRV_NAME
1935 " : Bad module param rx_frag_size. Using 2048\n");
1936 rx_frag_size = 2048;
1937 }
1938
1939 return pci_register_driver(&be_driver);
1940}
1941module_init(be_init_module);
1942
1943static void __exit be_exit_module(void)
1944{
1945 pci_unregister_driver(&be_driver);
1946}
1947module_exit(be_exit_module);
Clone of davem's net-next-2.6 tree