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wireless: convert drivers to netdev_tx_t
[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"
8788fdc2 19#include "be_cmds.h"
65f71b8b 20#include <asm/div64.h>
6b7c5b94
SP		 21
22MODULE_VERSION(DRV_VER);
23MODULE_DEVICE_TABLE(pci, be_dev_ids);
24MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
25MODULE_AUTHOR("ServerEngines Corporation");
26MODULE_LICENSE("GPL");
27
28static unsigned int rx_frag_size = 2048;
29module_param(rx_frag_size, uint, S_IRUGO);
30MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
31
6b7c5b94 32static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
c4ca2374
AK		 33 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
34 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
35 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
6b7c5b94
SP		 36 { 0 }
37};
38MODULE_DEVICE_TABLE(pci, be_dev_ids);
39
40static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
41{
42 struct be_dma_mem *mem = &q->dma_mem;
43 if (mem->va)
44 pci_free_consistent(adapter->pdev, mem->size,
45 mem->va, mem->dma);
46}
47
48static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
49 u16 len, u16 entry_size)
50{
51 struct be_dma_mem *mem = &q->dma_mem;
52
53 memset(q, 0, sizeof(*q));
54 q->len = len;
55 q->entry_size = entry_size;
56 mem->size = len * entry_size;
57 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
58 if (!mem->va)
59 return -1;
60 memset(mem->va, 0, mem->size);
61 return 0;
62}
63
8788fdc2 64static void be_intr_set(struct be_adapter *adapter, bool enable)
6b7c5b94 65{
8788fdc2 66 u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
6b7c5b94
SP		 67 u32 reg = ioread32(addr);
68 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
5f0b849e
SP		 69
70 if (!enabled && enable)
6b7c5b94 71 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
5f0b849e 72 else if (enabled && !enable)
6b7c5b94 73 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
5f0b849e 74 else
6b7c5b94 75 return;
5f0b849e 76
6b7c5b94
SP		 77 iowrite32(reg, addr);
78}
79
8788fdc2 80static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
6b7c5b94
SP		 81{
82 u32 val = 0;
83 val |= qid & DB_RQ_RING_ID_MASK;
84 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
8788fdc2 85 iowrite32(val, adapter->db + DB_RQ_OFFSET);
6b7c5b94
SP		 86}
87
8788fdc2 88static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
6b7c5b94
SP		 89{
90 u32 val = 0;
91 val |= qid & DB_TXULP_RING_ID_MASK;
92 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
8788fdc2 93 iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
6b7c5b94
SP		 94}
95
8788fdc2 96static void be_eq_notify(struct be_adapter *adapter, u16 qid,
6b7c5b94
SP		 97 bool arm, bool clear_int, u16 num_popped)
98{
99 u32 val = 0;
100 val |= qid & DB_EQ_RING_ID_MASK;
101 if (arm)
102 val |= 1 << DB_EQ_REARM_SHIFT;
103 if (clear_int)
104 val |= 1 << DB_EQ_CLR_SHIFT;
105 val |= 1 << DB_EQ_EVNT_SHIFT;
106 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
8788fdc2 107 iowrite32(val, adapter->db + DB_EQ_OFFSET);
6b7c5b94
SP		 108}
109
8788fdc2 110void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
6b7c5b94
SP		 111{
112 u32 val = 0;
113 val |= qid & DB_CQ_RING_ID_MASK;
114 if (arm)
115 val |= 1 << DB_CQ_REARM_SHIFT;
116 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
8788fdc2 117 iowrite32(val, adapter->db + DB_CQ_OFFSET);
6b7c5b94
SP		 118}
119
6b7c5b94
SP		 120static int be_mac_addr_set(struct net_device *netdev, void *p)
121{
122 struct be_adapter *adapter = netdev_priv(netdev);
123 struct sockaddr *addr = p;
124 int status = 0;
125
a65027e4
SP		 126 status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
127 if (status)
128 return status;
6b7c5b94 129
a65027e4
SP		 130 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
131 adapter->if_handle, &adapter->pmac_id);
6b7c5b94
SP		 132 if (!status)
133 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
134
135 return status;
136}
137
138static void netdev_stats_update(struct be_adapter *adapter)
139{
140 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
141 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
142 struct be_port_rxf_stats *port_stats =
143 &rxf_stats->port[adapter->port_num];
144 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
68110868 145 struct be_erx_stats *erx_stats = &hw_stats->erx;
6b7c5b94
SP		 146
147 dev_stats->rx_packets = port_stats->rx_total_frames;
148 dev_stats->tx_packets = port_stats->tx_unicastframes +
149 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
150 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
151 (u64) port_stats->rx_bytes_lsd;
152 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
153 (u64) port_stats->tx_bytes_lsd;
154
155 /* bad pkts received */
156 dev_stats->rx_errors = port_stats->rx_crc_errors +
157 port_stats->rx_alignment_symbol_errors +
158 port_stats->rx_in_range_errors +
68110868
SP		 159 port_stats->rx_out_range_errors +
160 port_stats->rx_frame_too_long +
161 port_stats->rx_dropped_too_small +
162 port_stats->rx_dropped_too_short +
163 port_stats->rx_dropped_header_too_small +
164 port_stats->rx_dropped_tcp_length +
165 port_stats->rx_dropped_runt +
166 port_stats->rx_tcp_checksum_errs +
167 port_stats->rx_ip_checksum_errs +
168 port_stats->rx_udp_checksum_errs;
169
170 /* no space in linux buffers: best possible approximation */
171 dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
6b7c5b94
SP		 172
173 /* detailed rx errors */
174 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
68110868
SP		 175 port_stats->rx_out_range_errors +
176 port_stats->rx_frame_too_long;
177
6b7c5b94
SP		 178 /* receive ring buffer overflow */
179 dev_stats->rx_over_errors = 0;
68110868 180
6b7c5b94
SP		 181 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
182
183 /* frame alignment errors */
184 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
68110868 185
6b7c5b94
SP		 186 /* receiver fifo overrun */
187 /* drops_no_pbuf is no per i/f, it's per BE card */
188 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
189 port_stats->rx_input_fifo_overflow +
190 rxf_stats->rx_drops_no_pbuf;
191 /* receiver missed packetd */
192 dev_stats->rx_missed_errors = 0;
68110868
SP		 193
194 /* packet transmit problems */
195 dev_stats->tx_errors = 0;
196
197 /* no space available in linux */
198 dev_stats->tx_dropped = 0;
199
200 dev_stats->multicast = port_stats->tx_multicastframes;
201 dev_stats->collisions = 0;
202
6b7c5b94
SP		 203 /* detailed tx_errors */
204 dev_stats->tx_aborted_errors = 0;
205 dev_stats->tx_carrier_errors = 0;
206 dev_stats->tx_fifo_errors = 0;
207 dev_stats->tx_heartbeat_errors = 0;
208 dev_stats->tx_window_errors = 0;
209}
210
8788fdc2 211void be_link_status_update(struct be_adapter *adapter, bool link_up)
6b7c5b94 212{
6b7c5b94
SP		 213 struct net_device *netdev = adapter->netdev;
214
6b7c5b94 215 /* If link came up or went down */
a8f447bd
SP		 216 if (adapter->link_up != link_up) {
217 if (link_up) {
6b7c5b94
SP		 218 netif_start_queue(netdev);
219 netif_carrier_on(netdev);
220 printk(KERN_INFO "%s: Link up\n", netdev->name);
a8f447bd
SP		 221 } else {
222 netif_stop_queue(netdev);
223 netif_carrier_off(netdev);
224 printk(KERN_INFO "%s: Link down\n", netdev->name);
6b7c5b94 225 }
a8f447bd 226 adapter->link_up = link_up;
6b7c5b94 227 }
6b7c5b94
SP		 228}
229
230/* Update the EQ delay n BE based on the RX frags consumed / sec */
231static void be_rx_eqd_update(struct be_adapter *adapter)
232{
6b7c5b94
SP		 233 struct be_eq_obj *rx_eq = &adapter->rx_eq;
234 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
4097f663
SP		 235 ulong now = jiffies;
236 u32 eqd;
237
238 if (!rx_eq->enable_aic)
239 return;
240
241 /* Wrapped around */
242 if (time_before(now, stats->rx_fps_jiffies)) {
243 stats->rx_fps_jiffies = now;
244 return;
245 }
6b7c5b94
SP		 246
247 /* Update once a second */
4097f663 248 if ((now - stats->rx_fps_jiffies) < HZ)
6b7c5b94
SP		 249 return;
250
251 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
4097f663 252 ((now - stats->rx_fps_jiffies) / HZ);
6b7c5b94 253
4097f663 254 stats->rx_fps_jiffies = now;
6b7c5b94
SP		 255 stats->be_prev_rx_frags = stats->be_rx_frags;
256 eqd = stats->be_rx_fps / 110000;
257 eqd = eqd << 3;
258 if (eqd > rx_eq->max_eqd)
259 eqd = rx_eq->max_eqd;
260 if (eqd < rx_eq->min_eqd)
261 eqd = rx_eq->min_eqd;
262 if (eqd < 10)
263 eqd = 0;
264 if (eqd != rx_eq->cur_eqd)
8788fdc2 265 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
6b7c5b94
SP		 266
267 rx_eq->cur_eqd = eqd;
268}
269
6b7c5b94
SP		 270static struct net_device_stats *be_get_stats(struct net_device *dev)
271{
272 struct be_adapter *adapter = netdev_priv(dev);
273
274 return &adapter->stats.net_stats;
275}
276
65f71b8b
SH		 277static u32 be_calc_rate(u64 bytes, unsigned long ticks)
278{
279 u64 rate = bytes;
280
281 do_div(rate, ticks / HZ);
282 rate <<= 3; /* bytes/sec -> bits/sec */
283 do_div(rate, 1000000ul); /* MB/Sec */
284
285 return rate;
286}
287
4097f663
SP		 288static void be_tx_rate_update(struct be_adapter *adapter)
289{
290 struct be_drvr_stats *stats = drvr_stats(adapter);
291 ulong now = jiffies;
292
293 /* Wrapped around? */
294 if (time_before(now, stats->be_tx_jiffies)) {
295 stats->be_tx_jiffies = now;
296 return;
297 }
298
299 /* Update tx rate once in two seconds */
300 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
65f71b8b
SH		 301 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
302 - stats->be_tx_bytes_prev,
303 now - stats->be_tx_jiffies);
4097f663
SP		 304 stats->be_tx_jiffies = now;
305 stats->be_tx_bytes_prev = stats->be_tx_bytes;
306 }
307}
308
6b7c5b94
SP		 309static void be_tx_stats_update(struct be_adapter *adapter,
310 u32 wrb_cnt, u32 copied, bool stopped)
311{
4097f663 312 struct be_drvr_stats *stats = drvr_stats(adapter);
6b7c5b94
SP		 313 stats->be_tx_reqs++;
314 stats->be_tx_wrbs += wrb_cnt;
315 stats->be_tx_bytes += copied;
316 if (stopped)
317 stats->be_tx_stops++;
6b7c5b94
SP		 318}
319
320/* Determine number of WRB entries needed to xmit data in an skb */
321static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
322{
ebc8d2ab
DM		 323 int cnt = (skb->len > skb->data_len);
324
325 cnt += skb_shinfo(skb)->nr_frags;
326
6b7c5b94
SP		 327 /* to account for hdr wrb */
328 cnt++;
329 if (cnt & 1) {
330 /* add a dummy to make it an even num */
331 cnt++;
332 *dummy = true;
333 } else
334 *dummy = false;
335 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
336 return cnt;
337}
338
339static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
340{
341 wrb->frag_pa_hi = upper_32_bits(addr);
342 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
343 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
344}
345
346static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
347 bool vlan, u32 wrb_cnt, u32 len)
348{
349 memset(hdr, 0, sizeof(*hdr));
350
351 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
352
353 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
354 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
355 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
356 hdr, skb_shinfo(skb)->gso_size);
357 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
358 if (is_tcp_pkt(skb))
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
360 else if (is_udp_pkt(skb))
361 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
362 }
363
364 if (vlan && vlan_tx_tag_present(skb)) {
365 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
366 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
367 hdr, vlan_tx_tag_get(skb));
368 }
369
370 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
372 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
373 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
374}
375
376
377static int make_tx_wrbs(struct be_adapter *adapter,
378 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
379{
380 u64 busaddr;
381 u32 i, copied = 0;
382 struct pci_dev *pdev = adapter->pdev;
383 struct sk_buff *first_skb = skb;
384 struct be_queue_info *txq = &adapter->tx_obj.q;
385 struct be_eth_wrb *wrb;
386 struct be_eth_hdr_wrb *hdr;
387
388 atomic_add(wrb_cnt, &txq->used);
389 hdr = queue_head_node(txq);
390 queue_head_inc(txq);
391
ebc8d2ab
DM		 392 if (skb->len > skb->data_len) {
393 int len = skb->len - skb->data_len;
394 busaddr = pci_map_single(pdev, skb->data, len,
395 PCI_DMA_TODEVICE);
396 wrb = queue_head_node(txq);
397 wrb_fill(wrb, busaddr, len);
398 be_dws_cpu_to_le(wrb, sizeof(*wrb));
399 queue_head_inc(txq);
400 copied += len;
401 }
6b7c5b94 402
ebc8d2ab
DM		 403 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
404 struct skb_frag_struct *frag =
405 &skb_shinfo(skb)->frags[i];
406 busaddr = pci_map_page(pdev, frag->page,
8788fdc2
SP		 407 frag->page_offset,
408 frag->size, PCI_DMA_TODEVICE);
ebc8d2ab
DM		 409 wrb = queue_head_node(txq);
410 wrb_fill(wrb, busaddr, frag->size);
411 be_dws_cpu_to_le(wrb, sizeof(*wrb));
412 queue_head_inc(txq);
413 copied += frag->size;
6b7c5b94
SP		 414 }
415
416 if (dummy_wrb) {
417 wrb = queue_head_node(txq);
418 wrb_fill(wrb, 0, 0);
419 be_dws_cpu_to_le(wrb, sizeof(*wrb));
420 queue_head_inc(txq);
421 }
422
423 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
424 wrb_cnt, copied);
425 be_dws_cpu_to_le(hdr, sizeof(*hdr));
426
427 return copied;
428}
429
430static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
431{
432 struct be_adapter *adapter = netdev_priv(netdev);
433 struct be_tx_obj *tx_obj = &adapter->tx_obj;
434 struct be_queue_info *txq = &tx_obj->q;
435 u32 wrb_cnt = 0, copied = 0;
436 u32 start = txq->head;
437 bool dummy_wrb, stopped = false;
438
439 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
440
441 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
442
443 /* record the sent skb in the sent_skb table */
444 BUG_ON(tx_obj->sent_skb_list[start]);
445 tx_obj->sent_skb_list[start] = skb;
446
447 /* Ensure that txq has space for the next skb; Else stop the queue
448 * *BEFORE* ringing the tx doorbell, so that we serialze the
449 * tx compls of the current transmit which'll wake up the queue
450 */
451 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
452 netif_stop_queue(netdev);
453 stopped = true;
454 }
455
8788fdc2 456 be_txq_notify(adapter, txq->id, wrb_cnt);
6b7c5b94 457
6b7c5b94
SP		 458 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
459 return NETDEV_TX_OK;
460}
461
462static int be_change_mtu(struct net_device *netdev, int new_mtu)
463{
464 struct be_adapter *adapter = netdev_priv(netdev);
465 if (new_mtu < BE_MIN_MTU ||
466 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
467 dev_info(&adapter->pdev->dev,
468 "MTU must be between %d and %d bytes\n",
469 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
470 return -EINVAL;
471 }
472 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
473 netdev->mtu, new_mtu);
474 netdev->mtu = new_mtu;
475 return 0;
476}
477
478/*
479 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
480 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
481 * set the BE in promiscuous VLAN mode.
482 */
1ab1ab75 483static void be_vid_config(struct net_device *netdev)
6b7c5b94
SP		 484{
485 struct be_adapter *adapter = netdev_priv(netdev);
486 u16 vtag[BE_NUM_VLANS_SUPPORTED];
487 u16 ntags = 0, i;
488
489 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
490 /* Construct VLAN Table to give to HW */
491 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
492 if (adapter->vlan_tag[i]) {
493 vtag[ntags] = cpu_to_le16(i);
494 ntags++;
495 }
496 }
8788fdc2 497 be_cmd_vlan_config(adapter, adapter->if_handle,
6b7c5b94
SP		 498 vtag, ntags, 1, 0);
499 } else {
8788fdc2 500 be_cmd_vlan_config(adapter, adapter->if_handle,
6b7c5b94
SP		 501 NULL, 0, 1, 1);
502 }
503}
504
505static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
506{
507 struct be_adapter *adapter = netdev_priv(netdev);
508 struct be_eq_obj *rx_eq = &adapter->rx_eq;
509 struct be_eq_obj *tx_eq = &adapter->tx_eq;
6b7c5b94 510
8788fdc2
SP		 511 be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
512 be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
6b7c5b94 513 adapter->vlan_grp = grp;
8788fdc2
SP		 514 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
515 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
6b7c5b94
SP		 516}
517
518static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
519{
520 struct be_adapter *adapter = netdev_priv(netdev);
521
522 adapter->num_vlans++;
523 adapter->vlan_tag[vid] = 1;
524
1ab1ab75 525 be_vid_config(netdev);
6b7c5b94
SP		 526}
527
528static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
529{
530 struct be_adapter *adapter = netdev_priv(netdev);
531
532 adapter->num_vlans--;
533 adapter->vlan_tag[vid] = 0;
534
535 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
1ab1ab75 536 be_vid_config(netdev);
6b7c5b94
SP		 537}
538
24307eef 539static void be_set_multicast_list(struct net_device *netdev)
6b7c5b94
SP		 540{
541 struct be_adapter *adapter = netdev_priv(netdev);
6b7c5b94 542
24307eef 543 if (netdev->flags & IFF_PROMISC) {
8788fdc2 544 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
24307eef
SP		 545 adapter->promiscuous = true;
546 goto done;
6b7c5b94
SP		 547 }
548
24307eef
SP		 549 /* BE was previously in promiscous mode; disable it */
550 if (adapter->promiscuous) {
551 adapter->promiscuous = false;
8788fdc2 552 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
6b7c5b94
SP		 553 }
554
24307eef 555 if (netdev->flags & IFF_ALLMULTI) {
8788fdc2 556 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
24307eef 557 goto done;
6b7c5b94 558 }
6b7c5b94 559
8788fdc2 560 be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
24307eef
SP		 561 netdev->mc_count);
562done:
563 return;
6b7c5b94
SP		 564}
565
4097f663 566static void be_rx_rate_update(struct be_adapter *adapter)
6b7c5b94 567{
4097f663
SP		 568 struct be_drvr_stats *stats = drvr_stats(adapter);
569 ulong now = jiffies;
6b7c5b94 570
4097f663
SP		 571 /* Wrapped around */
572 if (time_before(now, stats->be_rx_jiffies)) {
573 stats->be_rx_jiffies = now;
574 return;
575 }
6b7c5b94
SP		 576
577 /* Update the rate once in two seconds */
4097f663 578 if ((now - stats->be_rx_jiffies) < 2 * HZ)
6b7c5b94
SP		 579 return;
580
65f71b8b
SH		 581 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
582 - stats->be_rx_bytes_prev,
583 now - stats->be_rx_jiffies);
4097f663 584 stats->be_rx_jiffies = now;
6b7c5b94
SP		 585 stats->be_rx_bytes_prev = stats->be_rx_bytes;
586}
587
4097f663
SP		 588static void be_rx_stats_update(struct be_adapter *adapter,
589 u32 pktsize, u16 numfrags)
590{
591 struct be_drvr_stats *stats = drvr_stats(adapter);
592
593 stats->be_rx_compl++;
594 stats->be_rx_frags += numfrags;
595 stats->be_rx_bytes += pktsize;
596}
597
728a9972
AK		 598static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
599{
600 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
601
602 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
603 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
604 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
605 if (ip_version) {
606 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
607 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
608 }
609 ipv6_chk = (ip_version && (tcpf || udpf));
610
611 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
612}
613
6b7c5b94
SP		 614static struct be_rx_page_info *
615get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
616{
617 struct be_rx_page_info *rx_page_info;
618 struct be_queue_info *rxq = &adapter->rx_obj.q;
619
620 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
621 BUG_ON(!rx_page_info->page);
622
623 if (rx_page_info->last_page_user)
624 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
625 adapter->big_page_size, PCI_DMA_FROMDEVICE);
626
627 atomic_dec(&rxq->used);
628 return rx_page_info;
629}
630
631/* Throwaway the data in the Rx completion */
632static void be_rx_compl_discard(struct be_adapter *adapter,
633 struct be_eth_rx_compl *rxcp)
634{
635 struct be_queue_info *rxq = &adapter->rx_obj.q;
636 struct be_rx_page_info *page_info;
637 u16 rxq_idx, i, num_rcvd;
638
639 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
640 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
641
642 for (i = 0; i < num_rcvd; i++) {
643 page_info = get_rx_page_info(adapter, rxq_idx);
644 put_page(page_info->page);
645 memset(page_info, 0, sizeof(*page_info));
646 index_inc(&rxq_idx, rxq->len);
647 }
648}
649
650/*
651 * skb_fill_rx_data forms a complete skb for an ether frame
652 * indicated by rxcp.
653 */
654static void skb_fill_rx_data(struct be_adapter *adapter,
655 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
656{
657 struct be_queue_info *rxq = &adapter->rx_obj.q;
658 struct be_rx_page_info *page_info;
bd46cb6c 659 u16 rxq_idx, i, num_rcvd, j;
fa77406a 660 u32 pktsize, hdr_len, curr_frag_len, size;
6b7c5b94
SP		 661 u8 *start;
662
663 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
664 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
665 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
666
667 page_info = get_rx_page_info(adapter, rxq_idx);
668
669 start = page_address(page_info->page) + page_info->page_offset;
670 prefetch(start);
671
672 /* Copy data in the first descriptor of this completion */
673 curr_frag_len = min(pktsize, rx_frag_size);
674
675 /* Copy the header portion into skb_data */
676 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
677 memcpy(skb->data, start, hdr_len);
678 skb->len = curr_frag_len;
679 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
680 /* Complete packet has now been moved to data */
681 put_page(page_info->page);
682 skb->data_len = 0;
683 skb->tail += curr_frag_len;
684 } else {
685 skb_shinfo(skb)->nr_frags = 1;
686 skb_shinfo(skb)->frags[0].page = page_info->page;
687 skb_shinfo(skb)->frags[0].page_offset =
688 page_info->page_offset + hdr_len;
689 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
690 skb->data_len = curr_frag_len - hdr_len;
691 skb->tail += hdr_len;
692 }
693 memset(page_info, 0, sizeof(*page_info));
694
695 if (pktsize <= rx_frag_size) {
696 BUG_ON(num_rcvd != 1);
76fbb429 697 goto done;
6b7c5b94
SP		 698 }
699
700 /* More frags present for this completion */
fa77406a 701 size = pktsize;
bd46cb6c 702 for (i = 1, j = 0; i < num_rcvd; i++) {
fa77406a 703 size -= curr_frag_len;
6b7c5b94
SP		 704 index_inc(&rxq_idx, rxq->len);
705 page_info = get_rx_page_info(adapter, rxq_idx);
706
fa77406a 707 curr_frag_len = min(size, rx_frag_size);
6b7c5b94 708
bd46cb6c
AK		 709 /* Coalesce all frags from the same physical page in one slot */
710 if (page_info->page_offset == 0) {
711 /* Fresh page */
712 j++;
713 skb_shinfo(skb)->frags[j].page = page_info->page;
714 skb_shinfo(skb)->frags[j].page_offset =
715 page_info->page_offset;
716 skb_shinfo(skb)->frags[j].size = 0;
717 skb_shinfo(skb)->nr_frags++;
718 } else {
719 put_page(page_info->page);
720 }
721
722 skb_shinfo(skb)->frags[j].size += curr_frag_len;
6b7c5b94
SP		 723 skb->len += curr_frag_len;
724 skb->data_len += curr_frag_len;
6b7c5b94
SP		 725
726 memset(page_info, 0, sizeof(*page_info));
727 }
bd46cb6c 728 BUG_ON(j > MAX_SKB_FRAGS);
6b7c5b94 729
76fbb429 730done:
4097f663 731 be_rx_stats_update(adapter, pktsize, num_rcvd);
6b7c5b94
SP		 732 return;
733}
734
5be93b9a 735/* Process the RX completion indicated by rxcp when GRO is disabled */
6b7c5b94
SP		 736static void be_rx_compl_process(struct be_adapter *adapter,
737 struct be_eth_rx_compl *rxcp)
738{
739 struct sk_buff *skb;
740 u32 vtp, vid;
6b7c5b94 741
6b7c5b94
SP		 742 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
743
744 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
745 if (!skb) {
746 if (net_ratelimit())
747 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
748 be_rx_compl_discard(adapter, rxcp);
749 return;
750 }
751
752 skb_reserve(skb, NET_IP_ALIGN);
753
754 skb_fill_rx_data(adapter, skb, rxcp);
755
728a9972 756 if (do_pkt_csum(rxcp, adapter->rx_csum))
6b7c5b94 757 skb->ip_summed = CHECKSUM_NONE;
728a9972
AK		 758 else
759 skb->ip_summed = CHECKSUM_UNNECESSARY;
6b7c5b94
SP		 760
761 skb->truesize = skb->len + sizeof(struct sk_buff);
762 skb->protocol = eth_type_trans(skb, adapter->netdev);
763 skb->dev = adapter->netdev;
764
765 if (vtp) {
766 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
767 kfree_skb(skb);
768 return;
769 }
770 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
771 vid = be16_to_cpu(vid);
772 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
773 } else {
774 netif_receive_skb(skb);
775 }
776
777 adapter->netdev->last_rx = jiffies;
778
779 return;
780}
781
5be93b9a
AK		 782/* Process the RX completion indicated by rxcp when GRO is enabled */
783static void be_rx_compl_process_gro(struct be_adapter *adapter,
6b7c5b94
SP		 784 struct be_eth_rx_compl *rxcp)
785{
786 struct be_rx_page_info *page_info;
5be93b9a 787 struct sk_buff *skb = NULL;
6b7c5b94 788 struct be_queue_info *rxq = &adapter->rx_obj.q;
5be93b9a 789 struct be_eq_obj *eq_obj = &adapter->rx_eq;
6b7c5b94 790 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
bd46cb6c 791 u16 i, rxq_idx = 0, vid, j;
6b7c5b94
SP		 792
793 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
794 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
795 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
796 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
797
5be93b9a
AK		 798 skb = napi_get_frags(&eq_obj->napi);
799 if (!skb) {
800 be_rx_compl_discard(adapter, rxcp);
801 return;
802 }
803
6b7c5b94 804 remaining = pkt_size;
bd46cb6c 805 for (i = 0, j = -1; i < num_rcvd; i++) {
6b7c5b94
SP		 806 page_info = get_rx_page_info(adapter, rxq_idx);
807
808 curr_frag_len = min(remaining, rx_frag_size);
809
bd46cb6c
AK		 810 /* Coalesce all frags from the same physical page in one slot */
811 if (i == 0 || page_info->page_offset == 0) {
812 /* First frag or Fresh page */
813 j++;
5be93b9a
AK		 814 skb_shinfo(skb)->frags[j].page = page_info->page;
815 skb_shinfo(skb)->frags[j].page_offset =
816 page_info->page_offset;
817 skb_shinfo(skb)->frags[j].size = 0;
bd46cb6c
AK		 818 } else {
819 put_page(page_info->page);
820 }
5be93b9a 821 skb_shinfo(skb)->frags[j].size += curr_frag_len;
6b7c5b94 822
bd46cb6c 823 remaining -= curr_frag_len;
6b7c5b94 824 index_inc(&rxq_idx, rxq->len);
6b7c5b94
SP		 825 memset(page_info, 0, sizeof(*page_info));
826 }
bd46cb6c 827 BUG_ON(j > MAX_SKB_FRAGS);
6b7c5b94 828
5be93b9a
AK		 829 skb_shinfo(skb)->nr_frags = j + 1;
830 skb->len = pkt_size;
831 skb->data_len = pkt_size;
832 skb->truesize += pkt_size;
833 skb->ip_summed = CHECKSUM_UNNECESSARY;
834
6b7c5b94 835 if (likely(!vlanf)) {
5be93b9a 836 napi_gro_frags(&eq_obj->napi);
6b7c5b94
SP		 837 } else {
838 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
839 vid = be16_to_cpu(vid);
840
841 if (!adapter->vlan_grp || adapter->num_vlans == 0)
842 return;
843
5be93b9a 844 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
6b7c5b94
SP		 845 }
846
4097f663 847 be_rx_stats_update(adapter, pkt_size, num_rcvd);
6b7c5b94
SP		 848 return;
849}
850
851static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
852{
853 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
854
855 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
856 return NULL;
857
858 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
859
6b7c5b94
SP		 860 queue_tail_inc(&adapter->rx_obj.cq);
861 return rxcp;
862}
863
a7a0ef31
SP		 864/* To reset the valid bit, we need to reset the whole word as
865 * when walking the queue the valid entries are little-endian
866 * and invalid entries are host endian
867 */
868static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
869{
870 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
871}
872
6b7c5b94
SP		 873static inline struct page *be_alloc_pages(u32 size)
874{
875 gfp_t alloc_flags = GFP_ATOMIC;
876 u32 order = get_order(size);
877 if (order > 0)
878 alloc_flags |= __GFP_COMP;
879 return alloc_pages(alloc_flags, order);
880}
881
882/*
883 * Allocate a page, split it to fragments of size rx_frag_size and post as
884 * receive buffers to BE
885 */
886static void be_post_rx_frags(struct be_adapter *adapter)
887{
888 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
889 struct be_rx_page_info *page_info = NULL;
890 struct be_queue_info *rxq = &adapter->rx_obj.q;
891 struct page *pagep = NULL;
892 struct be_eth_rx_d *rxd;
893 u64 page_dmaaddr = 0, frag_dmaaddr;
894 u32 posted, page_offset = 0;
895
6b7c5b94
SP		 896 page_info = &page_info_tbl[rxq->head];
897 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
898 if (!pagep) {
899 pagep = be_alloc_pages(adapter->big_page_size);
900 if (unlikely(!pagep)) {
901 drvr_stats(adapter)->be_ethrx_post_fail++;
902 break;
903 }
904 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
905 adapter->big_page_size,
906 PCI_DMA_FROMDEVICE);
907 page_info->page_offset = 0;
908 } else {
909 get_page(pagep);
910 page_info->page_offset = page_offset + rx_frag_size;
911 }
912 page_offset = page_info->page_offset;
913 page_info->page = pagep;
914 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
915 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
916
917 rxd = queue_head_node(rxq);
918 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
919 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
920 queue_head_inc(rxq);
921
922 /* Any space left in the current big page for another frag? */
923 if ((page_offset + rx_frag_size + rx_frag_size) >
924 adapter->big_page_size) {
925 pagep = NULL;
926 page_info->last_page_user = true;
927 }
928 page_info = &page_info_tbl[rxq->head];
929 }
930 if (pagep)
931 page_info->last_page_user = true;
932
933 if (posted) {
6b7c5b94 934 atomic_add(posted, &rxq->used);
8788fdc2 935 be_rxq_notify(adapter, rxq->id, posted);
ea1dae11
SP		 936 } else if (atomic_read(&rxq->used) == 0) {
937 /* Let be_worker replenish when memory is available */
938 adapter->rx_post_starved = true;
6b7c5b94
SP		 939 }
940
941 return;
942}
943
5fb379ee 944static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
6b7c5b94 945{
6b7c5b94
SP		 946 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
947
948 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
949 return NULL;
950
951 be_dws_le_to_cpu(txcp, sizeof(*txcp));
952
953 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
954
955 queue_tail_inc(tx_cq);
956 return txcp;
957}
958
959static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
960{
961 struct be_queue_info *txq = &adapter->tx_obj.q;
962 struct be_eth_wrb *wrb;
963 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
964 struct sk_buff *sent_skb;
965 u64 busaddr;
966 u16 cur_index, num_wrbs = 0;
967
968 cur_index = txq->tail;
969 sent_skb = sent_skbs[cur_index];
970 BUG_ON(!sent_skb);
971 sent_skbs[cur_index] = NULL;
972
973 do {
974 cur_index = txq->tail;
975 wrb = queue_tail_node(txq);
976 be_dws_le_to_cpu(wrb, sizeof(*wrb));
977 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
978 if (busaddr != 0) {
979 pci_unmap_single(adapter->pdev, busaddr,
980 wrb->frag_len, PCI_DMA_TODEVICE);
981 }
982 num_wrbs++;
983 queue_tail_inc(txq);
984 } while (cur_index != last_index);
985
986 atomic_sub(num_wrbs, &txq->used);
987
988 kfree_skb(sent_skb);
989}
990
859b1e4e
SP		 991static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
992{
993 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
994
995 if (!eqe->evt)
996 return NULL;
997
998 eqe->evt = le32_to_cpu(eqe->evt);
999 queue_tail_inc(&eq_obj->q);
1000 return eqe;
1001}
1002
1003static int event_handle(struct be_adapter *adapter,
1004 struct be_eq_obj *eq_obj)
1005{
1006 struct be_eq_entry *eqe;
1007 u16 num = 0;
1008
1009 while ((eqe = event_get(eq_obj)) != NULL) {
1010 eqe->evt = 0;
1011 num++;
1012 }
1013
1014 /* Deal with any spurious interrupts that come
1015 * without events
1016 */
1017 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1018 if (num)
1019 napi_schedule(&eq_obj->napi);
1020
1021 return num;
1022}
1023
1024/* Just read and notify events without processing them.
1025 * Used at the time of destroying event queues */
1026static void be_eq_clean(struct be_adapter *adapter,
1027 struct be_eq_obj *eq_obj)
1028{
1029 struct be_eq_entry *eqe;
1030 u16 num = 0;
1031
1032 while ((eqe = event_get(eq_obj)) != NULL) {
1033 eqe->evt = 0;
1034 num++;
1035 }
1036
1037 if (num)
1038 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1039}
1040
6b7c5b94
SP		 1041static void be_rx_q_clean(struct be_adapter *adapter)
1042{
1043 struct be_rx_page_info *page_info;
1044 struct be_queue_info *rxq = &adapter->rx_obj.q;
1045 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1046 struct be_eth_rx_compl *rxcp;
1047 u16 tail;
1048
1049 /* First cleanup pending rx completions */
1050 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1051 be_rx_compl_discard(adapter, rxcp);
a7a0ef31 1052 be_rx_compl_reset(rxcp);
8788fdc2 1053 be_cq_notify(adapter, rx_cq->id, true, 1);
6b7c5b94
SP		 1054 }
1055
1056 /* Then free posted rx buffer that were not used */
1057 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
cdab23b7 1058 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
6b7c5b94
SP		 1059 page_info = get_rx_page_info(adapter, tail);
1060 put_page(page_info->page);
1061 memset(page_info, 0, sizeof(*page_info));
1062 }
1063 BUG_ON(atomic_read(&rxq->used));
1064}
1065
a8e9179a 1066static void be_tx_compl_clean(struct be_adapter *adapter)
6b7c5b94 1067{
a8e9179a 1068 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
6b7c5b94 1069 struct be_queue_info *txq = &adapter->tx_obj.q;
a8e9179a
SP		 1070 struct be_eth_tx_compl *txcp;
1071 u16 end_idx, cmpl = 0, timeo = 0;
1072
1073 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1074 do {
1075 while ((txcp = be_tx_compl_get(tx_cq))) {
1076 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1077 wrb_index, txcp);
1078 be_tx_compl_process(adapter, end_idx);
1079 cmpl++;
1080 }
1081 if (cmpl) {
1082 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1083 cmpl = 0;
1084 }
1085
1086 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1087 break;
1088
1089 mdelay(1);
1090 } while (true);
1091
1092 if (atomic_read(&txq->used))
1093 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1094 atomic_read(&txq->used));
6b7c5b94
SP		 1095}
1096
5fb379ee
SP		 1097static void be_mcc_queues_destroy(struct be_adapter *adapter)
1098{
1099 struct be_queue_info *q;
5fb379ee 1100
8788fdc2 1101 q = &adapter->mcc_obj.q;
5fb379ee 1102 if (q->created)
8788fdc2 1103 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
5fb379ee
SP		 1104 be_queue_free(adapter, q);
1105
8788fdc2 1106 q = &adapter->mcc_obj.cq;
5fb379ee 1107 if (q->created)
8788fdc2 1108 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
5fb379ee
SP		 1109 be_queue_free(adapter, q);
1110}
1111
1112/* Must be called only after TX qs are created as MCC shares TX EQ */
1113static int be_mcc_queues_create(struct be_adapter *adapter)
1114{
1115 struct be_queue_info *q, *cq;
5fb379ee
SP		 1116
1117 /* Alloc MCC compl queue */
8788fdc2 1118 cq = &adapter->mcc_obj.cq;
5fb379ee 1119 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
efd2e40a 1120 sizeof(struct be_mcc_compl)))
5fb379ee
SP		 1121 goto err;
1122
1123 /* Ask BE to create MCC compl queue; share TX's eq */
8788fdc2 1124 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
5fb379ee
SP		 1125 goto mcc_cq_free;
1126
1127 /* Alloc MCC queue */
8788fdc2 1128 q = &adapter->mcc_obj.q;
5fb379ee
SP		 1129 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1130 goto mcc_cq_destroy;
1131
1132 /* Ask BE to create MCC queue */
8788fdc2 1133 if (be_cmd_mccq_create(adapter, q, cq))
5fb379ee
SP		 1134 goto mcc_q_free;
1135
1136 return 0;
1137
1138mcc_q_free:
1139 be_queue_free(adapter, q);
1140mcc_cq_destroy:
8788fdc2 1141 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
5fb379ee
SP		 1142mcc_cq_free:
1143 be_queue_free(adapter, cq);
1144err:
1145 return -1;
1146}
1147
6b7c5b94
SP		 1148static void be_tx_queues_destroy(struct be_adapter *adapter)
1149{
1150 struct be_queue_info *q;
1151
1152 q = &adapter->tx_obj.q;
a8e9179a 1153 if (q->created)
8788fdc2 1154 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
6b7c5b94
SP		 1155 be_queue_free(adapter, q);
1156
1157 q = &adapter->tx_obj.cq;
1158 if (q->created)
8788fdc2 1159 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
6b7c5b94
SP		 1160 be_queue_free(adapter, q);
1161
859b1e4e
SP		 1162 /* Clear any residual events */
1163 be_eq_clean(adapter, &adapter->tx_eq);
1164
6b7c5b94
SP		 1165 q = &adapter->tx_eq.q;
1166 if (q->created)
8788fdc2 1167 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
6b7c5b94
SP		 1168 be_queue_free(adapter, q);
1169}
1170
1171static int be_tx_queues_create(struct be_adapter *adapter)
1172{
1173 struct be_queue_info *eq, *q, *cq;
1174
1175 adapter->tx_eq.max_eqd = 0;
1176 adapter->tx_eq.min_eqd = 0;
1177 adapter->tx_eq.cur_eqd = 96;
1178 adapter->tx_eq.enable_aic = false;
1179 /* Alloc Tx Event queue */
1180 eq = &adapter->tx_eq.q;
1181 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1182 return -1;
1183
1184 /* Ask BE to create Tx Event queue */
8788fdc2 1185 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
6b7c5b94
SP		 1186 goto tx_eq_free;
1187 /* Alloc TX eth compl queue */
1188 cq = &adapter->tx_obj.cq;
1189 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1190 sizeof(struct be_eth_tx_compl)))
1191 goto tx_eq_destroy;
1192
1193 /* Ask BE to create Tx eth compl queue */
8788fdc2 1194 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
6b7c5b94
SP		 1195 goto tx_cq_free;
1196
1197 /* Alloc TX eth queue */
1198 q = &adapter->tx_obj.q;
1199 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1200 goto tx_cq_destroy;
1201
1202 /* Ask BE to create Tx eth queue */
8788fdc2 1203 if (be_cmd_txq_create(adapter, q, cq))
6b7c5b94
SP		 1204 goto tx_q_free;
1205 return 0;
1206
1207tx_q_free:
1208 be_queue_free(adapter, q);
1209tx_cq_destroy:
8788fdc2 1210 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
6b7c5b94
SP		 1211tx_cq_free:
1212 be_queue_free(adapter, cq);
1213tx_eq_destroy:
8788fdc2 1214 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
6b7c5b94
SP		 1215tx_eq_free:
1216 be_queue_free(adapter, eq);
1217 return -1;
1218}
1219
1220static void be_rx_queues_destroy(struct be_adapter *adapter)
1221{
1222 struct be_queue_info *q;
1223
1224 q = &adapter->rx_obj.q;
1225 if (q->created) {
8788fdc2 1226 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
6b7c5b94
SP		 1227 be_rx_q_clean(adapter);
1228 }
1229 be_queue_free(adapter, q);
1230
1231 q = &adapter->rx_obj.cq;
1232 if (q->created)
8788fdc2 1233 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
6b7c5b94
SP		 1234 be_queue_free(adapter, q);
1235
859b1e4e
SP		 1236 /* Clear any residual events */
1237 be_eq_clean(adapter, &adapter->rx_eq);
1238
6b7c5b94
SP		 1239 q = &adapter->rx_eq.q;
1240 if (q->created)
8788fdc2 1241 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
6b7c5b94
SP		 1242 be_queue_free(adapter, q);
1243}
1244
1245static int be_rx_queues_create(struct be_adapter *adapter)
1246{
1247 struct be_queue_info *eq, *q, *cq;
1248 int rc;
1249
6b7c5b94
SP		 1250 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1251 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1252 adapter->rx_eq.min_eqd = 0;
1253 adapter->rx_eq.cur_eqd = 0;
1254 adapter->rx_eq.enable_aic = true;
1255
1256 /* Alloc Rx Event queue */
1257 eq = &adapter->rx_eq.q;
1258 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1259 sizeof(struct be_eq_entry));
1260 if (rc)
1261 return rc;
1262
1263 /* Ask BE to create Rx Event queue */
8788fdc2 1264 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
6b7c5b94
SP		 1265 if (rc)
1266 goto rx_eq_free;
1267
1268 /* Alloc RX eth compl queue */
1269 cq = &adapter->rx_obj.cq;
1270 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1271 sizeof(struct be_eth_rx_compl));
1272 if (rc)
1273 goto rx_eq_destroy;
1274
1275 /* Ask BE to create Rx eth compl queue */
8788fdc2 1276 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
6b7c5b94
SP		 1277 if (rc)
1278 goto rx_cq_free;
1279
1280 /* Alloc RX eth queue */
1281 q = &adapter->rx_obj.q;
1282 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1283 if (rc)
1284 goto rx_cq_destroy;
1285
1286 /* Ask BE to create Rx eth queue */
8788fdc2 1287 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
6b7c5b94
SP		 1288 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1289 if (rc)
1290 goto rx_q_free;
1291
1292 return 0;
1293rx_q_free:
1294 be_queue_free(adapter, q);
1295rx_cq_destroy:
8788fdc2 1296 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
6b7c5b94
SP		 1297rx_cq_free:
1298 be_queue_free(adapter, cq);
1299rx_eq_destroy:
8788fdc2 1300 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
6b7c5b94
SP		 1301rx_eq_free:
1302 be_queue_free(adapter, eq);
1303 return rc;
1304}
6b7c5b94 1305
b628bde2
SP		 1306/* There are 8 evt ids per func. Retruns the evt id's bit number */
1307static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1308{
1309 return eq_id - 8 * be_pci_func(adapter);
1310}
1311
6b7c5b94
SP		 1312static irqreturn_t be_intx(int irq, void *dev)
1313{
1314 struct be_adapter *adapter = dev;
8788fdc2 1315 int isr;
6b7c5b94 1316
8788fdc2 1317 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
eec368fb 1318 be_pci_func(adapter) * CEV_ISR_SIZE);
c001c213 1319 if (!isr)
8788fdc2 1320 return IRQ_NONE;
6b7c5b94 1321
8788fdc2
SP		 1322 event_handle(adapter, &adapter->tx_eq);
1323 event_handle(adapter, &adapter->rx_eq);
c001c213 1324
8788fdc2 1325 return IRQ_HANDLED;
6b7c5b94
SP		 1326}
1327
1328static irqreturn_t be_msix_rx(int irq, void *dev)
1329{
1330 struct be_adapter *adapter = dev;
1331
8788fdc2 1332 event_handle(adapter, &adapter->rx_eq);
6b7c5b94
SP		 1333
1334 return IRQ_HANDLED;
1335}
1336
5fb379ee 1337static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
6b7c5b94
SP		 1338{
1339 struct be_adapter *adapter = dev;
1340
8788fdc2 1341 event_handle(adapter, &adapter->tx_eq);
6b7c5b94
SP		 1342
1343 return IRQ_HANDLED;
1344}
1345
5be93b9a 1346static inline bool do_gro(struct be_adapter *adapter,
6b7c5b94
SP		 1347 struct be_eth_rx_compl *rxcp)
1348{
1349 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1350 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1351
1352 if (err)
1353 drvr_stats(adapter)->be_rxcp_err++;
1354
5be93b9a 1355 return (tcp_frame && !err) ? true : false;
6b7c5b94
SP		 1356}
1357
1358int be_poll_rx(struct napi_struct *napi, int budget)
1359{
1360 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1361 struct be_adapter *adapter =
1362 container_of(rx_eq, struct be_adapter, rx_eq);
1363 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1364 struct be_eth_rx_compl *rxcp;
1365 u32 work_done;
1366
1367 for (work_done = 0; work_done < budget; work_done++) {
1368 rxcp = be_rx_compl_get(adapter);
1369 if (!rxcp)
1370 break;
1371
5be93b9a
AK		 1372 if (do_gro(adapter, rxcp))
1373 be_rx_compl_process_gro(adapter, rxcp);
6b7c5b94
SP		 1374 else
1375 be_rx_compl_process(adapter, rxcp);
a7a0ef31
SP		 1376
1377 be_rx_compl_reset(rxcp);
6b7c5b94
SP		 1378 }
1379
6b7c5b94
SP		 1380 /* Refill the queue */
1381 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1382 be_post_rx_frags(adapter);
1383
1384 /* All consumed */
1385 if (work_done < budget) {
1386 napi_complete(napi);
8788fdc2 1387 be_cq_notify(adapter, rx_cq->id, true, work_done);
6b7c5b94
SP		 1388 } else {
1389 /* More to be consumed; continue with interrupts disabled */
8788fdc2 1390 be_cq_notify(adapter, rx_cq->id, false, work_done);
6b7c5b94
SP		 1391 }
1392 return work_done;
1393}
1394
5fb379ee 1395void be_process_tx(struct be_adapter *adapter)
6b7c5b94 1396{
5fb379ee
SP		 1397 struct be_queue_info *txq = &adapter->tx_obj.q;
1398 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
6b7c5b94
SP		 1399 struct be_eth_tx_compl *txcp;
1400 u32 num_cmpl = 0;
1401 u16 end_idx;
1402
5fb379ee 1403 while ((txcp = be_tx_compl_get(tx_cq))) {
6b7c5b94
SP		 1404 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1405 wrb_index, txcp);
1406 be_tx_compl_process(adapter, end_idx);
1407 num_cmpl++;
1408 }
1409
5fb379ee 1410 if (num_cmpl) {
8788fdc2 1411 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
5fb379ee
SP		 1412
1413 /* As Tx wrbs have been freed up, wake up netdev queue if
1414 * it was stopped due to lack of tx wrbs.
1415 */
1416 if (netif_queue_stopped(adapter->netdev) &&
6b7c5b94 1417 atomic_read(&txq->used) < txq->len / 2) {
5fb379ee
SP		 1418 netif_wake_queue(adapter->netdev);
1419 }
1420
1421 drvr_stats(adapter)->be_tx_events++;
1422 drvr_stats(adapter)->be_tx_compl += num_cmpl;
6b7c5b94 1423 }
5fb379ee
SP		 1424}
1425
1426/* As TX and MCC share the same EQ check for both TX and MCC completions.
1427 * For TX/MCC we don't honour budget; consume everything
1428 */
1429static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1430{
1431 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1432 struct be_adapter *adapter =
1433 container_of(tx_eq, struct be_adapter, tx_eq);
6b7c5b94
SP		 1434
1435 napi_complete(napi);
1436
5fb379ee 1437 be_process_tx(adapter);
6b7c5b94 1438
8788fdc2 1439 be_process_mcc(adapter);
6b7c5b94
SP		 1440
1441 return 1;
1442}
1443
ea1dae11
SP		 1444static void be_worker(struct work_struct *work)
1445{
1446 struct be_adapter *adapter =
1447 container_of(work, struct be_adapter, work.work);
1448 int status;
1449
ea1dae11 1450 /* Get Stats */
8788fdc2 1451 status = be_cmd_get_stats(adapter, &adapter->stats.cmd);
ea1dae11
SP		 1452 if (!status)
1453 netdev_stats_update(adapter);
1454
1455 /* Set EQ delay */
1456 be_rx_eqd_update(adapter);
1457
4097f663
SP		 1458 be_tx_rate_update(adapter);
1459 be_rx_rate_update(adapter);
1460
ea1dae11
SP		 1461 if (adapter->rx_post_starved) {
1462 adapter->rx_post_starved = false;
1463 be_post_rx_frags(adapter);
1464 }
1465
1466 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1467}
1468
6b7c5b94
SP		 1469static void be_msix_enable(struct be_adapter *adapter)
1470{
1471 int i, status;
1472
1473 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1474 adapter->msix_entries[i].entry = i;
1475
1476 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1477 BE_NUM_MSIX_VECTORS);
1478 if (status == 0)
1479 adapter->msix_enabled = true;
1480 return;
1481}
1482
1483static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1484{
b628bde2
SP		 1485 return adapter->msix_entries[
1486 be_evt_bit_get(adapter, eq_id)].vector;
6b7c5b94
SP		 1487}
1488
b628bde2
SP		 1489static int be_request_irq(struct be_adapter *adapter,
1490 struct be_eq_obj *eq_obj,
1491 void *handler, char *desc)
6b7c5b94
SP		 1492{
1493 struct net_device *netdev = adapter->netdev;
b628bde2
SP		 1494 int vec;
1495
1496 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1497 vec = be_msix_vec_get(adapter, eq_obj->q.id);
1498 return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1499}
1500
1501static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1502{
1503 int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1504 free_irq(vec, adapter);
1505}
6b7c5b94 1506
b628bde2
SP		 1507static int be_msix_register(struct be_adapter *adapter)
1508{
1509 int status;
1510
1511 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
6b7c5b94
SP		 1512 if (status)
1513 goto err;
1514
b628bde2
SP		 1515 status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1516 if (status)
1517 goto free_tx_irq;
1518
6b7c5b94 1519 return 0;
b628bde2
SP		 1520
1521free_tx_irq:
1522 be_free_irq(adapter, &adapter->tx_eq);
6b7c5b94
SP		 1523err:
1524 dev_warn(&adapter->pdev->dev,
1525 "MSIX Request IRQ failed - err %d\n", status);
1526 pci_disable_msix(adapter->pdev);
1527 adapter->msix_enabled = false;
1528 return status;
1529}
1530
1531static int be_irq_register(struct be_adapter *adapter)
1532{
1533 struct net_device *netdev = adapter->netdev;
1534 int status;
1535
1536 if (adapter->msix_enabled) {
1537 status = be_msix_register(adapter);
1538 if (status == 0)
1539 goto done;
1540 }
1541
1542 /* INTx */
1543 netdev->irq = adapter->pdev->irq;
1544 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1545 adapter);
1546 if (status) {
1547 dev_err(&adapter->pdev->dev,
1548 "INTx request IRQ failed - err %d\n", status);
1549 return status;
1550 }
1551done:
1552 adapter->isr_registered = true;
1553 return 0;
1554}
1555
1556static void be_irq_unregister(struct be_adapter *adapter)
1557{
1558 struct net_device *netdev = adapter->netdev;
6b7c5b94
SP		 1559
1560 if (!adapter->isr_registered)
1561 return;
1562
1563 /* INTx */
1564 if (!adapter->msix_enabled) {
1565 free_irq(netdev->irq, adapter);
1566 goto done;
1567 }
1568
1569 /* MSIx */
b628bde2
SP		 1570 be_free_irq(adapter, &adapter->tx_eq);
1571 be_free_irq(adapter, &adapter->rx_eq);
6b7c5b94
SP		 1572done:
1573 adapter->isr_registered = false;
1574 return;
1575}
1576
1577static int be_open(struct net_device *netdev)
1578{
1579 struct be_adapter *adapter = netdev_priv(netdev);
6b7c5b94
SP		 1580 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1581 struct be_eq_obj *tx_eq = &adapter->tx_eq;
a8f447bd
SP		 1582 bool link_up;
1583 int status;
5fb379ee
SP		 1584
1585 /* First time posting */
1586 be_post_rx_frags(adapter);
1587
1588 napi_enable(&rx_eq->napi);
1589 napi_enable(&tx_eq->napi);
1590
1591 be_irq_register(adapter);
1592
8788fdc2 1593 be_intr_set(adapter, true);
5fb379ee
SP		 1594
1595 /* The evt queues are created in unarmed state; arm them */
8788fdc2
SP		 1596 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1597 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
5fb379ee
SP		 1598
1599 /* Rx compl queue may be in unarmed state; rearm it */
8788fdc2 1600 be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
5fb379ee 1601
8788fdc2 1602 status = be_cmd_link_status_query(adapter, &link_up);
a8f447bd
SP		 1603 if (status)
1604 return status;
1605 be_link_status_update(adapter, link_up);
5fb379ee
SP		 1606
1607 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1608 return 0;
1609}
1610
1611static int be_setup(struct be_adapter *adapter)
1612{
5fb379ee 1613 struct net_device *netdev = adapter->netdev;
6b7c5b94
SP		 1614 u32 if_flags;
1615 int status;
1616
1617 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1618 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1619 BE_IF_FLAGS_PASS_L3L4_ERRORS;
8788fdc2 1620 status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
6b7c5b94
SP		 1621 false/* pmac_invalid */, &adapter->if_handle,
1622 &adapter->pmac_id);
1623 if (status != 0)
1624 goto do_none;
1625
1ab1ab75
SP		 1626 be_vid_config(netdev);
1627
8788fdc2 1628 status = be_cmd_set_flow_control(adapter, true, true);
6b7c5b94
SP		 1629 if (status != 0)
1630 goto if_destroy;
1631
1632 status = be_tx_queues_create(adapter);
1633 if (status != 0)
1634 goto if_destroy;
1635
1636 status = be_rx_queues_create(adapter);
1637 if (status != 0)
1638 goto tx_qs_destroy;
1639
5fb379ee
SP		 1640 status = be_mcc_queues_create(adapter);
1641 if (status != 0)
1642 goto rx_qs_destroy;
6b7c5b94 1643
6b7c5b94
SP		 1644 return 0;
1645
5fb379ee
SP		 1646rx_qs_destroy:
1647 be_rx_queues_destroy(adapter);
6b7c5b94
SP		 1648tx_qs_destroy:
1649 be_tx_queues_destroy(adapter);
1650if_destroy:
8788fdc2 1651 be_cmd_if_destroy(adapter, adapter->if_handle);
6b7c5b94
SP		 1652do_none:
1653 return status;
1654}
1655
5fb379ee
SP		 1656static int be_clear(struct be_adapter *adapter)
1657{
1a8887d8 1658 be_mcc_queues_destroy(adapter);
5fb379ee
SP		 1659 be_rx_queues_destroy(adapter);
1660 be_tx_queues_destroy(adapter);
1661
8788fdc2 1662 be_cmd_if_destroy(adapter, adapter->if_handle);
5fb379ee 1663
5fb379ee
SP		 1664 return 0;
1665}
1666
6b7c5b94
SP		 1667static int be_close(struct net_device *netdev)
1668{
1669 struct be_adapter *adapter = netdev_priv(netdev);
6b7c5b94
SP		 1670 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1671 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1672 int vec;
1673
b305be78 1674 cancel_delayed_work_sync(&adapter->work);
6b7c5b94
SP		 1675
1676 netif_stop_queue(netdev);
1677 netif_carrier_off(netdev);
a8f447bd 1678 adapter->link_up = false;
6b7c5b94 1679
8788fdc2 1680 be_intr_set(adapter, false);
6b7c5b94
SP		 1681
1682 if (adapter->msix_enabled) {
1683 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1684 synchronize_irq(vec);
1685 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1686 synchronize_irq(vec);
1687 } else {
1688 synchronize_irq(netdev->irq);
1689 }
1690 be_irq_unregister(adapter);
1691
1692 napi_disable(&rx_eq->napi);
1693 napi_disable(&tx_eq->napi);
1694
a8e9179a
SP		 1695 /* Wait for all pending tx completions to arrive so that
1696 * all tx skbs are freed.
1697 */
1698 be_tx_compl_clean(adapter);
1699
6b7c5b94
SP		 1700 return 0;
1701}
1702
6b7c5b94
SP		 1703static struct net_device_ops be_netdev_ops = {
1704 .ndo_open = be_open,
1705 .ndo_stop = be_close,
1706 .ndo_start_xmit = be_xmit,
1707 .ndo_get_stats = be_get_stats,
1708 .ndo_set_rx_mode = be_set_multicast_list,
1709 .ndo_set_mac_address = be_mac_addr_set,
1710 .ndo_change_mtu = be_change_mtu,
1711 .ndo_validate_addr = eth_validate_addr,
1712 .ndo_vlan_rx_register = be_vlan_register,
1713 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1714 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1715};
1716
1717static void be_netdev_init(struct net_device *netdev)
1718{
1719 struct be_adapter *adapter = netdev_priv(netdev);
1720
1721 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1722 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
5be93b9a 1723 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
6b7c5b94
SP		 1724
1725 netdev->flags |= IFF_MULTICAST;
1726
728a9972
AK		 1727 adapter->rx_csum = true;
1728
6b7c5b94
SP		 1729 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1730
1731 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1732
6b7c5b94
SP		 1733 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1734 BE_NAPI_WEIGHT);
5fb379ee 1735 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
6b7c5b94
SP		 1736 BE_NAPI_WEIGHT);
1737
1738 netif_carrier_off(netdev);
1739 netif_stop_queue(netdev);
1740}
1741
1742static void be_unmap_pci_bars(struct be_adapter *adapter)
1743{
8788fdc2
SP		 1744 if (adapter->csr)
1745 iounmap(adapter->csr);
1746 if (adapter->db)
1747 iounmap(adapter->db);
1748 if (adapter->pcicfg)
1749 iounmap(adapter->pcicfg);
6b7c5b94
SP		 1750}
1751
1752static int be_map_pci_bars(struct be_adapter *adapter)
1753{
1754 u8 __iomem *addr;
1755
1756 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1757 pci_resource_len(adapter->pdev, 2));
1758 if (addr == NULL)
1759 return -ENOMEM;
8788fdc2 1760 adapter->csr = addr;
6b7c5b94
SP		 1761
1762 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1763 128 * 1024);
1764 if (addr == NULL)
1765 goto pci_map_err;
8788fdc2 1766 adapter->db = addr;
6b7c5b94
SP		 1767
1768 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1769 pci_resource_len(adapter->pdev, 1));
1770 if (addr == NULL)
1771 goto pci_map_err;
8788fdc2 1772 adapter->pcicfg = addr;
6b7c5b94
SP		 1773
1774 return 0;
1775pci_map_err:
1776 be_unmap_pci_bars(adapter);
1777 return -ENOMEM;
1778}
1779
1780
1781static void be_ctrl_cleanup(struct be_adapter *adapter)
1782{
8788fdc2 1783 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
6b7c5b94
SP		 1784
1785 be_unmap_pci_bars(adapter);
1786
1787 if (mem->va)
1788 pci_free_consistent(adapter->pdev, mem->size,
1789 mem->va, mem->dma);
1790}
1791
6b7c5b94
SP		 1792static int be_ctrl_init(struct be_adapter *adapter)
1793{
8788fdc2
SP		 1794 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1795 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
6b7c5b94 1796 int status;
6b7c5b94
SP		 1797
1798 status = be_map_pci_bars(adapter);
1799 if (status)
1800 return status;
1801
1802 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1803 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1804 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1805 if (!mbox_mem_alloc->va) {
1806 be_unmap_pci_bars(adapter);
1807 return -1;
1808 }
1809 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1810 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1811 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1812 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
8788fdc2
SP		 1813 spin_lock_init(&adapter->mbox_lock);
1814 spin_lock_init(&adapter->mcc_lock);
1815 spin_lock_init(&adapter->mcc_cq_lock);
a8f447bd 1816
6b7c5b94
SP		 1817 return 0;
1818}
1819
1820static void be_stats_cleanup(struct be_adapter *adapter)
1821{
1822 struct be_stats_obj *stats = &adapter->stats;
1823 struct be_dma_mem *cmd = &stats->cmd;
1824
1825 if (cmd->va)
1826 pci_free_consistent(adapter->pdev, cmd->size,
1827 cmd->va, cmd->dma);
1828}
1829
1830static int be_stats_init(struct be_adapter *adapter)
1831{
1832 struct be_stats_obj *stats = &adapter->stats;
1833 struct be_dma_mem *cmd = &stats->cmd;
1834
1835 cmd->size = sizeof(struct be_cmd_req_get_stats);
1836 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1837 if (cmd->va == NULL)
1838 return -1;
1839 return 0;
1840}
1841
1842static void __devexit be_remove(struct pci_dev *pdev)
1843{
1844 struct be_adapter *adapter = pci_get_drvdata(pdev);
1845 if (!adapter)
1846 return;
1847
1848 unregister_netdev(adapter->netdev);
1849
5fb379ee
SP		 1850 be_clear(adapter);
1851
6b7c5b94
SP		 1852 be_stats_cleanup(adapter);
1853
1854 be_ctrl_cleanup(adapter);
1855
1856 if (adapter->msix_enabled) {
1857 pci_disable_msix(adapter->pdev);
1858 adapter->msix_enabled = false;
1859 }
1860
1861 pci_set_drvdata(pdev, NULL);
1862 pci_release_regions(pdev);
1863 pci_disable_device(pdev);
1864
1865 free_netdev(adapter->netdev);
1866}
1867
1868static int be_hw_up(struct be_adapter *adapter)
1869{
6b7c5b94
SP		 1870 int status;
1871
8788fdc2 1872 status = be_cmd_POST(adapter);
6b7c5b94
SP		 1873 if (status)
1874 return status;
1875
8788fdc2 1876 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
6b7c5b94
SP		 1877 if (status)
1878 return status;
1879
8788fdc2 1880 status = be_cmd_query_fw_cfg(adapter, &adapter->port_num);
6b7c5b94
SP		 1881 return status;
1882}
1883
1884static int __devinit be_probe(struct pci_dev *pdev,
1885 const struct pci_device_id *pdev_id)
1886{
1887 int status = 0;
1888 struct be_adapter *adapter;
1889 struct net_device *netdev;
6b7c5b94
SP		 1890 u8 mac[ETH_ALEN];
1891
1892 status = pci_enable_device(pdev);
1893 if (status)
1894 goto do_none;
1895
1896 status = pci_request_regions(pdev, DRV_NAME);
1897 if (status)
1898 goto disable_dev;
1899 pci_set_master(pdev);
1900
1901 netdev = alloc_etherdev(sizeof(struct be_adapter));
1902 if (netdev == NULL) {
1903 status = -ENOMEM;
1904 goto rel_reg;
1905 }
1906 adapter = netdev_priv(netdev);
1907 adapter->pdev = pdev;
1908 pci_set_drvdata(pdev, adapter);
1909 adapter->netdev = netdev;
1910
1911 be_msix_enable(adapter);
1912
e930438c 1913 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
6b7c5b94
SP		 1914 if (!status) {
1915 netdev->features |= NETIF_F_HIGHDMA;
1916 } else {
e930438c 1917 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
6b7c5b94
SP		 1918 if (status) {
1919 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1920 goto free_netdev;
1921 }
1922 }
1923
6b7c5b94
SP		 1924 status = be_ctrl_init(adapter);
1925 if (status)
1926 goto free_netdev;
1927
14074eab 1928 status = be_cmd_reset_function(adapter);
1929 if (status)
1930 goto ctrl_clean;
1931
6b7c5b94
SP		 1932 status = be_stats_init(adapter);
1933 if (status)
1934 goto ctrl_clean;
1935
1936 status = be_hw_up(adapter);
1937 if (status)
1938 goto stats_clean;
1939
8788fdc2 1940 status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
6b7c5b94
SP		 1941 true /* permanent */, 0);
1942 if (status)
1943 goto stats_clean;
1944 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1945
1946 INIT_DELAYED_WORK(&adapter->work, be_worker);
1947 be_netdev_init(netdev);
1948 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1949
5fb379ee
SP		 1950 status = be_setup(adapter);
1951 if (status)
1952 goto stats_clean;
6b7c5b94
SP		 1953 status = register_netdev(netdev);
1954 if (status != 0)
5fb379ee 1955 goto unsetup;
6b7c5b94 1956
c4ca2374 1957 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
6b7c5b94
SP		 1958 return 0;
1959
5fb379ee
SP		 1960unsetup:
1961 be_clear(adapter);
6b7c5b94
SP		 1962stats_clean:
1963 be_stats_cleanup(adapter);
1964ctrl_clean:
1965 be_ctrl_cleanup(adapter);
1966free_netdev:
1967 free_netdev(adapter->netdev);
1968rel_reg:
1969 pci_release_regions(pdev);
1970disable_dev:
1971 pci_disable_device(pdev);
1972do_none:
c4ca2374 1973 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
6b7c5b94
SP		 1974 return status;
1975}
1976
1977static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1978{
1979 struct be_adapter *adapter = pci_get_drvdata(pdev);
1980 struct net_device *netdev = adapter->netdev;
1981
1982 netif_device_detach(netdev);
1983 if (netif_running(netdev)) {
1984 rtnl_lock();
1985 be_close(netdev);
1986 rtnl_unlock();
1987 }
9b0365f1 1988 be_clear(adapter);
6b7c5b94
SP		 1989
1990 pci_save_state(pdev);
1991 pci_disable_device(pdev);
1992 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1993 return 0;
1994}
1995
1996static int be_resume(struct pci_dev *pdev)
1997{
1998 int status = 0;
1999 struct be_adapter *adapter = pci_get_drvdata(pdev);
2000 struct net_device *netdev = adapter->netdev;
2001
2002 netif_device_detach(netdev);
2003
2004 status = pci_enable_device(pdev);
2005 if (status)
2006 return status;
2007
2008 pci_set_power_state(pdev, 0);
2009 pci_restore_state(pdev);
2010
9b0365f1 2011 be_setup(adapter);
6b7c5b94
SP		 2012 if (netif_running(netdev)) {
2013 rtnl_lock();
2014 be_open(netdev);
2015 rtnl_unlock();
2016 }
2017 netif_device_attach(netdev);
2018 return 0;
2019}
2020
2021static struct pci_driver be_driver = {
2022 .name = DRV_NAME,
2023 .id_table = be_dev_ids,
2024 .probe = be_probe,
2025 .remove = be_remove,
2026 .suspend = be_suspend,
2027 .resume = be_resume
2028};
2029
2030static int __init be_init_module(void)
2031{
2032 if (rx_frag_size != 8192 && rx_frag_size != 4096
2033 && rx_frag_size != 2048) {
2034 printk(KERN_WARNING DRV_NAME
2035 " : Module param rx_frag_size must be 2048/4096/8192."
2036 " Using 2048\n");
2037 rx_frag_size = 2048;
2038 }
6b7c5b94
SP		 2039
2040 return pci_register_driver(&be_driver);
2041}
2042module_init(be_init_module);
2043
2044static void __exit be_exit_module(void)
2045{
2046 pci_unregister_driver(&be_driver);
2047}
2048module_exit(be_exit_module);
Linux kernel - Deliverables
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