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x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / net / wireless / brcm80211 / brcmfmac / dhd_linux.c
blob40e7f854e10f9634b44e4475b3c78cab02ea4dc9
1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/etherdevice.h>
19 #include <linux/module.h>
20 #include <net/cfg80211.h>
21 #include <net/rtnetlink.h>
22 #include <brcmu_utils.h>
23 #include <brcmu_wifi.h>
24
25 #include "dhd.h"
26 #include "dhd_bus.h"
27 #include "dhd_proto.h"
28 #include "dhd_dbg.h"
29 #include "fwil_types.h"
30 #include "p2p.h"
31 #include "wl_cfg80211.h"
32 #include "fwil.h"
33 #include "fwsignal.h"
34
35 MODULE_AUTHOR("Broadcom Corporation");
36 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
37 MODULE_LICENSE("Dual BSD/GPL");
38
39 #define MAX_WAIT_FOR_8021X_TX 50 /* msecs */
40
41 /* AMPDU rx reordering definitions */
42 #define BRCMF_RXREORDER_FLOWID_OFFSET 0
43 #define BRCMF_RXREORDER_MAXIDX_OFFSET 2
44 #define BRCMF_RXREORDER_FLAGS_OFFSET 4
45 #define BRCMF_RXREORDER_CURIDX_OFFSET 6
46 #define BRCMF_RXREORDER_EXPIDX_OFFSET 8
47
48 #define BRCMF_RXREORDER_DEL_FLOW 0x01
49 #define BRCMF_RXREORDER_FLUSH_ALL 0x02
50 #define BRCMF_RXREORDER_CURIDX_VALID 0x04
51 #define BRCMF_RXREORDER_EXPIDX_VALID 0x08
52 #define BRCMF_RXREORDER_NEW_HOLE 0x10
53
54 /* Error bits */
55 int brcmf_msg_level;
56 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
57 MODULE_PARM_DESC(debug, "level of debug output");
58
59 /* P2P0 enable */
60 static int brcmf_p2p_enable;
61 #ifdef CONFIG_BRCMDBG
62 module_param_named(p2pon, brcmf_p2p_enable, int, 0);
63 MODULE_PARM_DESC(p2pon, "enable p2p management functionality");
64 #endif
65
66 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
67 {
68 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
69 brcmf_err("ifidx %d out of range\n", ifidx);
70 return "<if_bad>";
71 }
72
73 if (drvr->iflist[ifidx] == NULL) {
74 brcmf_err("null i/f %d\n", ifidx);
75 return "<if_null>";
76 }
77
78 if (drvr->iflist[ifidx]->ndev)
79 return drvr->iflist[ifidx]->ndev->name;
80
81 return "<if_none>";
82 }
83
84 static void _brcmf_set_multicast_list(struct work_struct *work)
85 {
86 struct brcmf_if *ifp;
87 struct net_device *ndev;
88 struct netdev_hw_addr *ha;
89 u32 cmd_value, cnt;
90 __le32 cnt_le;
91 char *buf, *bufp;
92 u32 buflen;
93 s32 err;
94
95 ifp = container_of(work, struct brcmf_if, multicast_work);
96
97 brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
98
99 ndev = ifp->ndev;
100
101 /* Determine initial value of allmulti flag */
102 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
103
104 /* Send down the multicast list first. */
105 cnt = netdev_mc_count(ndev);
106 buflen = sizeof(cnt) + (cnt * ETH_ALEN);
107 buf = kmalloc(buflen, GFP_ATOMIC);
108 if (!buf)
109 return;
110 bufp = buf;
111
112 cnt_le = cpu_to_le32(cnt);
113 memcpy(bufp, &cnt_le, sizeof(cnt_le));
114 bufp += sizeof(cnt_le);
115
116 netdev_for_each_mc_addr(ha, ndev) {
117 if (!cnt)
118 break;
119 memcpy(bufp, ha->addr, ETH_ALEN);
120 bufp += ETH_ALEN;
121 cnt--;
122 }
123
124 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
125 if (err < 0) {
126 brcmf_err("Setting mcast_list failed, %d\n", err);
127 cmd_value = cnt ? true : cmd_value;
128 }
129
130 kfree(buf);
131
132 /*
133 * Now send the allmulti setting. This is based on the setting in the
134 * net_device flags, but might be modified above to be turned on if we
135 * were trying to set some addresses and dongle rejected it...
136 */
137 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
138 if (err < 0)
139 brcmf_err("Setting allmulti failed, %d\n", err);
140
141 /*Finally, pick up the PROMISC flag */
142 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
143 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
144 if (err < 0)
145 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
146 err);
147 }
148
149 static void
150 _brcmf_set_mac_address(struct work_struct *work)
151 {
152 struct brcmf_if *ifp;
153 s32 err;
154
155 ifp = container_of(work, struct brcmf_if, setmacaddr_work);
156
157 brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
158
159 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
160 ETH_ALEN);
161 if (err < 0) {
162 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
163 } else {
164 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
165 ifp->mac_addr);
166 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
167 }
168 }
169
170 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
171 {
172 struct brcmf_if *ifp = netdev_priv(ndev);
173 struct sockaddr *sa = (struct sockaddr *)addr;
174
175 memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
176 schedule_work(&ifp->setmacaddr_work);
177 return 0;
178 }
179
180 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
181 {
182 struct brcmf_if *ifp = netdev_priv(ndev);
183
184 schedule_work(&ifp->multicast_work);
185 }
186
187 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
188 struct net_device *ndev)
189 {
190 int ret;
191 struct brcmf_if *ifp = netdev_priv(ndev);
192 struct brcmf_pub *drvr = ifp->drvr;
193 struct ethhdr *eh;
194
195 brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx);
196
197 /* Can the device send data? */
198 if (drvr->bus_if->state != BRCMF_BUS_DATA) {
199 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
200 netif_stop_queue(ndev);
201 dev_kfree_skb(skb);
202 ret = -ENODEV;
203 goto done;
204 }
205
206 if (!drvr->iflist[ifp->bssidx]) {
207 brcmf_err("bad ifidx %d\n", ifp->bssidx);
208 netif_stop_queue(ndev);
209 dev_kfree_skb(skb);
210 ret = -ENODEV;
211 goto done;
212 }
213
214 /* Make sure there's enough room for any header */
215 if (skb_headroom(skb) < drvr->hdrlen) {
216 struct sk_buff *skb2;
217
218 brcmf_dbg(INFO, "%s: insufficient headroom\n",
219 brcmf_ifname(drvr, ifp->bssidx));
220 drvr->bus_if->tx_realloc++;
221 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
222 dev_kfree_skb(skb);
223 skb = skb2;
224 if (skb == NULL) {
225 brcmf_err("%s: skb_realloc_headroom failed\n",
226 brcmf_ifname(drvr, ifp->bssidx));
227 ret = -ENOMEM;
228 goto done;
229 }
230 }
231
232 /* validate length for ether packet */
233 if (skb->len < sizeof(*eh)) {
234 ret = -EINVAL;
235 dev_kfree_skb(skb);
236 goto done;
237 }
238
239 ret = brcmf_fws_process_skb(ifp, skb);
240
241 done:
242 if (ret) {
243 ifp->stats.tx_dropped++;
244 } else {
245 ifp->stats.tx_packets++;
246 ifp->stats.tx_bytes += skb->len;
247 }
248
249 /* Return ok: we always eat the packet */
250 return NETDEV_TX_OK;
251 }
252
253 void brcmf_txflowblock_if(struct brcmf_if *ifp,
254 enum brcmf_netif_stop_reason reason, bool state)
255 {
256 unsigned long flags;
257
258 if (!ifp || !ifp->ndev)
259 return;
260
261 brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
262 ifp->bssidx, ifp->netif_stop, reason, state);
263
264 spin_lock_irqsave(&ifp->netif_stop_lock, flags);
265 if (state) {
266 if (!ifp->netif_stop)
267 netif_stop_queue(ifp->ndev);
268 ifp->netif_stop |= reason;
269 } else {
270 ifp->netif_stop &= ~reason;
271 if (!ifp->netif_stop)
272 netif_wake_queue(ifp->ndev);
273 }
274 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
275 }
276
277 void brcmf_txflowblock(struct device *dev, bool state)
278 {
279 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
280 struct brcmf_pub *drvr = bus_if->drvr;
281
282 brcmf_dbg(TRACE, "Enter\n");
283
284 brcmf_fws_bus_blocked(drvr, state);
285 }
286
287 static void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
288 {
289 skb->dev = ifp->ndev;
290 skb->protocol = eth_type_trans(skb, skb->dev);
291
292 if (skb->pkt_type == PACKET_MULTICAST)
293 ifp->stats.multicast++;
294
295 /* Process special event packets */
296 brcmf_fweh_process_skb(ifp->drvr, skb);
297
298 if (!(ifp->ndev->flags & IFF_UP)) {
299 brcmu_pkt_buf_free_skb(skb);
300 return;
301 }
302
303 ifp->stats.rx_bytes += skb->len;
304 ifp->stats.rx_packets++;
305
306 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
307 if (in_interrupt())
308 netif_rx(skb);
309 else
310 /* If the receive is not processed inside an ISR,
311 * the softirqd must be woken explicitly to service
312 * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni().
313 */
314 netif_rx_ni(skb);
315 }
316
317 static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
318 u8 start, u8 end,
319 struct sk_buff_head *skb_list)
320 {
321 /* initialize return list */
322 __skb_queue_head_init(skb_list);
323
324 if (rfi->pend_pkts == 0) {
325 brcmf_dbg(INFO, "no packets in reorder queue\n");
326 return;
327 }
328
329 do {
330 if (rfi->pktslots[start]) {
331 __skb_queue_tail(skb_list, rfi->pktslots[start]);
332 rfi->pktslots[start] = NULL;
333 }
334 start++;
335 if (start > rfi->max_idx)
336 start = 0;
337 } while (start != end);
338 rfi->pend_pkts -= skb_queue_len(skb_list);
339 }
340
341 static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data,
342 struct sk_buff *pkt)
343 {
344 u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
345 struct brcmf_ampdu_rx_reorder *rfi;
346 struct sk_buff_head reorder_list;
347 struct sk_buff *pnext;
348 u8 flags;
349 u32 buf_size;
350
351 flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
352 flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
353
354 /* validate flags and flow id */
355 if (flags == 0xFF) {
356 brcmf_err("invalid flags...so ignore this packet\n");
357 brcmf_netif_rx(ifp, pkt);
358 return;
359 }
360
361 rfi = ifp->drvr->reorder_flows[flow_id];
362 if (flags & BRCMF_RXREORDER_DEL_FLOW) {
363 brcmf_dbg(INFO, "flow-%d: delete\n",
364 flow_id);
365
366 if (rfi == NULL) {
367 brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
368 flow_id);
369 brcmf_netif_rx(ifp, pkt);
370 return;
371 }
372
373 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
374 &reorder_list);
375 /* add the last packet */
376 __skb_queue_tail(&reorder_list, pkt);
377 kfree(rfi);
378 ifp->drvr->reorder_flows[flow_id] = NULL;
379 goto netif_rx;
380 }
381 /* from here on we need a flow reorder instance */
382 if (rfi == NULL) {
383 buf_size = sizeof(*rfi);
384 max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
385
386 buf_size += (max_idx + 1) * sizeof(pkt);
387
388 /* allocate space for flow reorder info */
389 brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
390 flow_id, max_idx);
391 rfi = kzalloc(buf_size, GFP_ATOMIC);
392 if (rfi == NULL) {
393 brcmf_err("failed to alloc buffer\n");
394 brcmf_netif_rx(ifp, pkt);
395 return;
396 }
397
398 ifp->drvr->reorder_flows[flow_id] = rfi;
399 rfi->pktslots = (struct sk_buff **)(rfi+1);
400 rfi->max_idx = max_idx;
401 }
402 if (flags & BRCMF_RXREORDER_NEW_HOLE) {
403 if (rfi->pend_pkts) {
404 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
405 rfi->exp_idx,
406 &reorder_list);
407 WARN_ON(rfi->pend_pkts);
408 } else {
409 __skb_queue_head_init(&reorder_list);
410 }
411 rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
412 rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
413 rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
414 rfi->pktslots[rfi->cur_idx] = pkt;
415 rfi->pend_pkts++;
416 brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
417 flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
418 } else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
419 cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
420 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
421
422 if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
423 /* still in the current hole */
424 /* enqueue the current on the buffer chain */
425 if (rfi->pktslots[cur_idx] != NULL) {
426 brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
427 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
428 rfi->pktslots[cur_idx] = NULL;
429 }
430 rfi->pktslots[cur_idx] = pkt;
431 rfi->pend_pkts++;
432 rfi->cur_idx = cur_idx;
433 brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
434 flow_id, cur_idx, exp_idx, rfi->pend_pkts);
435
436 /* can return now as there is no reorder
437 * list to process.
438 */
439 return;
440 }
441 if (rfi->exp_idx == cur_idx) {
442 if (rfi->pktslots[cur_idx] != NULL) {
443 brcmf_dbg(INFO, "error buffer pending..free it\n");
444 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
445 rfi->pktslots[cur_idx] = NULL;
446 }
447 rfi->pktslots[cur_idx] = pkt;
448 rfi->pend_pkts++;
449
450 /* got the expected one. flush from current to expected
451 * and update expected
452 */
453 brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
454 flow_id, cur_idx, exp_idx, rfi->pend_pkts);
455
456 rfi->cur_idx = cur_idx;
457 rfi->exp_idx = exp_idx;
458
459 brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
460 &reorder_list);
461 brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
462 flow_id, skb_queue_len(&reorder_list),
463 rfi->pend_pkts);
464 } else {
465 u8 end_idx;
466
467 brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
468 flow_id, flags, rfi->cur_idx, rfi->exp_idx,
469 cur_idx, exp_idx);
470 if (flags & BRCMF_RXREORDER_FLUSH_ALL)
471 end_idx = rfi->exp_idx;
472 else
473 end_idx = exp_idx;
474
475 /* flush pkts first */
476 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
477 &reorder_list);
478
479 if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
480 __skb_queue_tail(&reorder_list, pkt);
481 } else {
482 rfi->pktslots[cur_idx] = pkt;
483 rfi->pend_pkts++;
484 }
485 rfi->exp_idx = exp_idx;
486 rfi->cur_idx = cur_idx;
487 }
488 } else {
489 /* explicity window move updating the expected index */
490 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
491
492 brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
493 flow_id, flags, rfi->exp_idx, exp_idx);
494 if (flags & BRCMF_RXREORDER_FLUSH_ALL)
495 end_idx = rfi->exp_idx;
496 else
497 end_idx = exp_idx;
498
499 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
500 &reorder_list);
501 __skb_queue_tail(&reorder_list, pkt);
502 /* set the new expected idx */
503 rfi->exp_idx = exp_idx;
504 }
505 netif_rx:
506 skb_queue_walk_safe(&reorder_list, pkt, pnext) {
507 __skb_unlink(pkt, &reorder_list);
508 brcmf_netif_rx(ifp, pkt);
509 }
510 }
511
512 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
513 {
514 struct sk_buff *skb, *pnext;
515 struct brcmf_if *ifp;
516 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
517 struct brcmf_pub *drvr = bus_if->drvr;
518 struct brcmf_skb_reorder_data *rd;
519 u8 ifidx;
520 int ret;
521
522 brcmf_dbg(DATA, "Enter: %s: count=%u\n", dev_name(dev),
523 skb_queue_len(skb_list));
524
525 skb_queue_walk_safe(skb_list, skb, pnext) {
526 skb_unlink(skb, skb_list);
527
528 /* process and remove protocol-specific header */
529 ret = brcmf_proto_hdrpull(drvr, true, &ifidx, skb);
530 ifp = drvr->iflist[ifidx];
531
532 if (ret || !ifp || !ifp->ndev) {
533 if ((ret != -ENODATA) && ifp)
534 ifp->stats.rx_errors++;
535 brcmu_pkt_buf_free_skb(skb);
536 continue;
537 }
538
539 rd = (struct brcmf_skb_reorder_data *)skb->cb;
540 if (rd->reorder)
541 brcmf_rxreorder_process_info(ifp, rd->reorder, skb);
542 else
543 brcmf_netif_rx(ifp, skb);
544 }
545 }
546
547 void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
548 bool success)
549 {
550 struct brcmf_if *ifp;
551 struct ethhdr *eh;
552 u8 ifidx;
553 u16 type;
554 int res;
555
556 res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp);
557
558 ifp = drvr->iflist[ifidx];
559 if (!ifp)
560 goto done;
561
562 if (res == 0) {
563 eh = (struct ethhdr *)(txp->data);
564 type = ntohs(eh->h_proto);
565
566 if (type == ETH_P_PAE) {
567 atomic_dec(&ifp->pend_8021x_cnt);
568 if (waitqueue_active(&ifp->pend_8021x_wait))
569 wake_up(&ifp->pend_8021x_wait);
570 }
571 }
572 if (!success)
573 ifp->stats.tx_errors++;
574 done:
575 brcmu_pkt_buf_free_skb(txp);
576 }
577
578 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
579 {
580 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
581 struct brcmf_pub *drvr = bus_if->drvr;
582
583 /* await txstatus signal for firmware if active */
584 if (brcmf_fws_fc_active(drvr->fws)) {
585 if (!success)
586 brcmf_fws_bustxfail(drvr->fws, txp);
587 } else {
588 brcmf_txfinalize(drvr, txp, success);
589 }
590 }
591
592 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
593 {
594 struct brcmf_if *ifp = netdev_priv(ndev);
595
596 brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
597
598 return &ifp->stats;
599 }
600
601 /*
602 * Set current toe component enables in toe_ol iovar,
603 * and set toe global enable iovar
604 */
605 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
606 {
607 s32 err;
608
609 err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
610 if (err < 0) {
611 brcmf_err("Setting toe_ol failed, %d\n", err);
612 return err;
613 }
614
615 err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
616 if (err < 0)
617 brcmf_err("Setting toe failed, %d\n", err);
618
619 return err;
620
621 }
622
623 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
624 struct ethtool_drvinfo *info)
625 {
626 struct brcmf_if *ifp = netdev_priv(ndev);
627 struct brcmf_pub *drvr = ifp->drvr;
628
629 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
630 snprintf(info->version, sizeof(info->version), "%lu",
631 drvr->drv_version);
632 strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
633 sizeof(info->bus_info));
634 }
635
636 static const struct ethtool_ops brcmf_ethtool_ops = {
637 .get_drvinfo = brcmf_ethtool_get_drvinfo,
638 };
639
640 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
641 {
642 struct brcmf_pub *drvr = ifp->drvr;
643 struct ethtool_drvinfo info;
644 char drvname[sizeof(info.driver)];
645 u32 cmd;
646 struct ethtool_value edata;
647 u32 toe_cmpnt, csum_dir;
648 int ret;
649
650 brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
651
652 /* all ethtool calls start with a cmd word */
653 if (copy_from_user(&cmd, uaddr, sizeof(u32)))
654 return -EFAULT;
655
656 switch (cmd) {
657 case ETHTOOL_GDRVINFO:
658 /* Copy out any request driver name */
659 if (copy_from_user(&info, uaddr, sizeof(info)))
660 return -EFAULT;
661 strncpy(drvname, info.driver, sizeof(info.driver));
662 drvname[sizeof(info.driver) - 1] = '\0';
663
664 /* clear struct for return */
665 memset(&info, 0, sizeof(info));
666 info.cmd = cmd;
667
668 /* if requested, identify ourselves */
669 if (strcmp(drvname, "?dhd") == 0) {
670 sprintf(info.driver, "dhd");
671 strcpy(info.version, BRCMF_VERSION_STR);
672 }
673 /* report dongle driver type */
674 else
675 sprintf(info.driver, "wl");
676
677 sprintf(info.version, "%lu", drvr->drv_version);
678 if (copy_to_user(uaddr, &info, sizeof(info)))
679 return -EFAULT;
680 brcmf_dbg(TRACE, "given %*s, returning %s\n",
681 (int)sizeof(drvname), drvname, info.driver);
682 break;
683
684 /* Get toe offload components from dongle */
685 case ETHTOOL_GRXCSUM:
686 case ETHTOOL_GTXCSUM:
687 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
688 if (ret < 0)
689 return ret;
690
691 csum_dir =
692 (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
693
694 edata.cmd = cmd;
695 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
696
697 if (copy_to_user(uaddr, &edata, sizeof(edata)))
698 return -EFAULT;
699 break;
700
701 /* Set toe offload components in dongle */
702 case ETHTOOL_SRXCSUM:
703 case ETHTOOL_STXCSUM:
704 if (copy_from_user(&edata, uaddr, sizeof(edata)))
705 return -EFAULT;
706
707 /* Read the current settings, update and write back */
708 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
709 if (ret < 0)
710 return ret;
711
712 csum_dir =
713 (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
714
715 if (edata.data != 0)
716 toe_cmpnt |= csum_dir;
717 else
718 toe_cmpnt &= ~csum_dir;
719
720 ret = brcmf_toe_set(ifp, toe_cmpnt);
721 if (ret < 0)
722 return ret;
723
724 /* If setting TX checksum mode, tell Linux the new mode */
725 if (cmd == ETHTOOL_STXCSUM) {
726 if (edata.data)
727 ifp->ndev->features |= NETIF_F_IP_CSUM;
728 else
729 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
730 }
731
732 break;
733
734 default:
735 return -EOPNOTSUPP;
736 }
737
738 return 0;
739 }
740
741 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
742 int cmd)
743 {
744 struct brcmf_if *ifp = netdev_priv(ndev);
745 struct brcmf_pub *drvr = ifp->drvr;
746
747 brcmf_dbg(TRACE, "Enter, idx=%d, cmd=0x%04x\n", ifp->bssidx, cmd);
748
749 if (!drvr->iflist[ifp->bssidx])
750 return -1;
751
752 if (cmd == SIOCETHTOOL)
753 return brcmf_ethtool(ifp, ifr->ifr_data);
754
755 return -EOPNOTSUPP;
756 }
757
758 static int brcmf_netdev_stop(struct net_device *ndev)
759 {
760 struct brcmf_if *ifp = netdev_priv(ndev);
761
762 brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
763
764 brcmf_cfg80211_down(ndev);
765
766 /* Set state and stop OS transmissions */
767 netif_stop_queue(ndev);
768
769 return 0;
770 }
771
772 static int brcmf_netdev_open(struct net_device *ndev)
773 {
774 struct brcmf_if *ifp = netdev_priv(ndev);
775 struct brcmf_pub *drvr = ifp->drvr;
776 struct brcmf_bus *bus_if = drvr->bus_if;
777 u32 toe_ol;
778 s32 ret = 0;
779
780 brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
781
782 /* If bus is not ready, can't continue */
783 if (bus_if->state != BRCMF_BUS_DATA) {
784 brcmf_err("failed bus is not ready\n");
785 return -EAGAIN;
786 }
787
788 atomic_set(&ifp->pend_8021x_cnt, 0);
789
790 /* Get current TOE mode from dongle */
791 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
792 && (toe_ol & TOE_TX_CSUM_OL) != 0)
793 ndev->features |= NETIF_F_IP_CSUM;
794 else
795 ndev->features &= ~NETIF_F_IP_CSUM;
796
797 /* Allow transmit calls */
798 netif_start_queue(ndev);
799 if (brcmf_cfg80211_up(ndev)) {
800 brcmf_err("failed to bring up cfg80211\n");
801 return -1;
802 }
803
804 return ret;
805 }
806
807 static const struct net_device_ops brcmf_netdev_ops_pri = {
808 .ndo_open = brcmf_netdev_open,
809 .ndo_stop = brcmf_netdev_stop,
810 .ndo_get_stats = brcmf_netdev_get_stats,
811 .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
812 .ndo_start_xmit = brcmf_netdev_start_xmit,
813 .ndo_set_mac_address = brcmf_netdev_set_mac_address,
814 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
815 };
816
817 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
818 {
819 struct brcmf_pub *drvr = ifp->drvr;
820 struct net_device *ndev;
821 s32 err;
822
823 brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
824 ifp->mac_addr);
825 ndev = ifp->ndev;
826
827 /* set appropriate operations */
828 ndev->netdev_ops = &brcmf_netdev_ops_pri;
829
830 ndev->hard_header_len += drvr->hdrlen;
831 ndev->ethtool_ops = &brcmf_ethtool_ops;
832
833 drvr->rxsz = ndev->mtu + ndev->hard_header_len +
834 drvr->hdrlen;
835
836 /* set the mac address */
837 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
838
839 INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
840 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
841
842 if (rtnl_locked)
843 err = register_netdevice(ndev);
844 else
845 err = register_netdev(ndev);
846 if (err != 0) {
847 brcmf_err("couldn't register the net device\n");
848 goto fail;
849 }
850
851 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
852
853 ndev->destructor = free_netdev;
854 return 0;
855
856 fail:
857 drvr->iflist[ifp->bssidx] = NULL;
858 ndev->netdev_ops = NULL;
859 free_netdev(ndev);
860 return -EBADE;
861 }
862
863 static int brcmf_net_p2p_open(struct net_device *ndev)
864 {
865 brcmf_dbg(TRACE, "Enter\n");
866
867 return brcmf_cfg80211_up(ndev);
868 }
869
870 static int brcmf_net_p2p_stop(struct net_device *ndev)
871 {
872 brcmf_dbg(TRACE, "Enter\n");
873
874 return brcmf_cfg80211_down(ndev);
875 }
876
877 static int brcmf_net_p2p_do_ioctl(struct net_device *ndev,
878 struct ifreq *ifr, int cmd)
879 {
880 brcmf_dbg(TRACE, "Enter\n");
881 return 0;
882 }
883
884 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
885 struct net_device *ndev)
886 {
887 if (skb)
888 dev_kfree_skb_any(skb);
889
890 return NETDEV_TX_OK;
891 }
892
893 static const struct net_device_ops brcmf_netdev_ops_p2p = {
894 .ndo_open = brcmf_net_p2p_open,
895 .ndo_stop = brcmf_net_p2p_stop,
896 .ndo_do_ioctl = brcmf_net_p2p_do_ioctl,
897 .ndo_start_xmit = brcmf_net_p2p_start_xmit
898 };
899
900 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
901 {
902 struct net_device *ndev;
903
904 brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
905 ifp->mac_addr);
906 ndev = ifp->ndev;
907
908 ndev->netdev_ops = &brcmf_netdev_ops_p2p;
909
910 /* set the mac address */
911 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
912
913 if (register_netdev(ndev) != 0) {
914 brcmf_err("couldn't register the p2p net device\n");
915 goto fail;
916 }
917
918 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
919
920 return 0;
921
922 fail:
923 ifp->drvr->iflist[ifp->bssidx] = NULL;
924 ndev->netdev_ops = NULL;
925 free_netdev(ndev);
926 return -EBADE;
927 }
928
929 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
930 char *name, u8 *mac_addr)
931 {
932 struct brcmf_if *ifp;
933 struct net_device *ndev;
934
935 brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
936
937 ifp = drvr->iflist[bssidx];
938 /*
939 * Delete the existing interface before overwriting it
940 * in case we missed the BRCMF_E_IF_DEL event.
941 */
942 if (ifp) {
943 brcmf_err("ERROR: netdev:%s already exists\n",
944 ifp->ndev->name);
945 if (ifidx) {
946 netif_stop_queue(ifp->ndev);
947 unregister_netdev(ifp->ndev);
948 free_netdev(ifp->ndev);
949 drvr->iflist[bssidx] = NULL;
950 } else {
951 brcmf_err("ignore IF event\n");
952 return ERR_PTR(-EINVAL);
953 }
954 }
955
956 if (!brcmf_p2p_enable && bssidx == 1) {
957 /* this is P2P_DEVICE interface */
958 brcmf_dbg(INFO, "allocate non-netdev interface\n");
959 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
960 if (!ifp)
961 return ERR_PTR(-ENOMEM);
962 } else {
963 brcmf_dbg(INFO, "allocate netdev interface\n");
964 /* Allocate netdev, including space for private structure */
965 ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
966 if (!ndev)
967 return ERR_PTR(-ENOMEM);
968
969 ifp = netdev_priv(ndev);
970 ifp->ndev = ndev;
971 }
972
973 ifp->drvr = drvr;
974 drvr->iflist[bssidx] = ifp;
975 ifp->ifidx = ifidx;
976 ifp->bssidx = bssidx;
977
978 init_waitqueue_head(&ifp->pend_8021x_wait);
979 spin_lock_init(&ifp->netif_stop_lock);
980
981 if (mac_addr != NULL)
982 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
983
984 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
985 current->pid, name, ifp->mac_addr);
986
987 return ifp;
988 }
989
990 void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
991 {
992 struct brcmf_if *ifp;
993
994 ifp = drvr->iflist[bssidx];
995 drvr->iflist[bssidx] = NULL;
996 if (!ifp) {
997 brcmf_err("Null interface, idx=%d\n", bssidx);
998 return;
999 }
1000 brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
1001 if (ifp->ndev) {
1002 if (bssidx == 0) {
1003 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
1004 rtnl_lock();
1005 brcmf_netdev_stop(ifp->ndev);
1006 rtnl_unlock();
1007 }
1008 } else {
1009 netif_stop_queue(ifp->ndev);
1010 }
1011
1012 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
1013 cancel_work_sync(&ifp->setmacaddr_work);
1014 cancel_work_sync(&ifp->multicast_work);
1015 }
1016 /* unregister will take care of freeing it */
1017 unregister_netdev(ifp->ndev);
1018 if (bssidx == 0)
1019 brcmf_cfg80211_detach(drvr->config);
1020 } else {
1021 kfree(ifp);
1022 }
1023 }
1024
1025 int brcmf_attach(uint bus_hdrlen, struct device *dev)
1026 {
1027 struct brcmf_pub *drvr = NULL;
1028 int ret = 0;
1029
1030 brcmf_dbg(TRACE, "Enter\n");
1031
1032 /* Allocate primary brcmf_info */
1033 drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
1034 if (!drvr)
1035 return -ENOMEM;
1036
1037 mutex_init(&drvr->proto_block);
1038
1039 /* Link to bus module */
1040 drvr->hdrlen = bus_hdrlen;
1041 drvr->bus_if = dev_get_drvdata(dev);
1042 drvr->bus_if->drvr = drvr;
1043
1044 /* create device debugfs folder */
1045 brcmf_debugfs_attach(drvr);
1046
1047 /* Attach and link in the protocol */
1048 ret = brcmf_proto_attach(drvr);
1049 if (ret != 0) {
1050 brcmf_err("brcmf_prot_attach failed\n");
1051 goto fail;
1052 }
1053
1054 /* attach firmware event handler */
1055 brcmf_fweh_attach(drvr);
1056
1057 INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
1058
1059 return ret;
1060
1061 fail:
1062 brcmf_detach(dev);
1063
1064 return ret;
1065 }
1066
1067 int brcmf_bus_start(struct device *dev)
1068 {
1069 int ret = -1;
1070 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1071 struct brcmf_pub *drvr = bus_if->drvr;
1072 struct brcmf_if *ifp;
1073 struct brcmf_if *p2p_ifp;
1074
1075 brcmf_dbg(TRACE, "\n");
1076
1077 /* Bring up the bus */
1078 ret = brcmf_bus_init(bus_if);
1079 if (ret != 0) {
1080 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
1081 return ret;
1082 }
1083
1084 /* add primary networking interface */
1085 ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
1086 if (IS_ERR(ifp))
1087 return PTR_ERR(ifp);
1088
1089 if (brcmf_p2p_enable)
1090 p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL);
1091 else
1092 p2p_ifp = NULL;
1093 if (IS_ERR(p2p_ifp))
1094 p2p_ifp = NULL;
1095
1096 /* signal bus ready */
1097 bus_if->state = BRCMF_BUS_DATA;
1098
1099 /* Bus is ready, do any initialization */
1100 ret = brcmf_c_preinit_dcmds(ifp);
1101 if (ret < 0)
1102 goto fail;
1103
1104 ret = brcmf_fws_init(drvr);
1105 if (ret < 0)
1106 goto fail;
1107
1108 brcmf_fws_add_interface(ifp);
1109
1110 drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
1111 if (drvr->config == NULL) {
1112 ret = -ENOMEM;
1113 goto fail;
1114 }
1115
1116 ret = brcmf_fweh_activate_events(ifp);
1117 if (ret < 0)
1118 goto fail;
1119
1120 ret = brcmf_net_attach(ifp, false);
1121 fail:
1122 if (ret < 0) {
1123 brcmf_err("failed: %d\n", ret);
1124 if (drvr->config)
1125 brcmf_cfg80211_detach(drvr->config);
1126 if (drvr->fws) {
1127 brcmf_fws_del_interface(ifp);
1128 brcmf_fws_deinit(drvr);
1129 }
1130 if (drvr->iflist[0]) {
1131 free_netdev(ifp->ndev);
1132 drvr->iflist[0] = NULL;
1133 }
1134 if (p2p_ifp) {
1135 free_netdev(p2p_ifp->ndev);
1136 drvr->iflist[1] = NULL;
1137 }
1138 return ret;
1139 }
1140 if ((brcmf_p2p_enable) && (p2p_ifp))
1141 if (brcmf_net_p2p_attach(p2p_ifp) < 0)
1142 brcmf_p2p_enable = 0;
1143
1144 return 0;
1145 }
1146
1147 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1148 {
1149 brcmf_dbg(TRACE, "Enter\n");
1150
1151 if (drvr) {
1152 /* Stop the protocol module */
1153 brcmf_proto_stop(drvr);
1154
1155 /* Stop the bus module */
1156 brcmf_bus_stop(drvr->bus_if);
1157 }
1158 }
1159
1160 void brcmf_dev_reset(struct device *dev)
1161 {
1162 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1163 struct brcmf_pub *drvr = bus_if->drvr;
1164
1165 if (drvr == NULL)
1166 return;
1167
1168 if (drvr->iflist[0])
1169 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1170 }
1171
1172 void brcmf_detach(struct device *dev)
1173 {
1174 s32 i;
1175 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1176 struct brcmf_pub *drvr = bus_if->drvr;
1177
1178 brcmf_dbg(TRACE, "Enter\n");
1179
1180 if (drvr == NULL)
1181 return;
1182
1183 /* stop firmware event handling */
1184 brcmf_fweh_detach(drvr);
1185
1186 /* make sure primary interface removed last */
1187 for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1188 if (drvr->iflist[i]) {
1189 brcmf_fws_del_interface(drvr->iflist[i]);
1190 brcmf_del_if(drvr, i);
1191 }
1192
1193 brcmf_bus_detach(drvr);
1194
1195 if (drvr->prot)
1196 brcmf_proto_detach(drvr);
1197
1198 brcmf_fws_deinit(drvr);
1199
1200 brcmf_debugfs_detach(drvr);
1201 bus_if->drvr = NULL;
1202 kfree(drvr);
1203 }
1204
1205 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1206 {
1207 return atomic_read(&ifp->pend_8021x_cnt);
1208 }
1209
1210 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1211 {
1212 struct brcmf_if *ifp = netdev_priv(ndev);
1213 int err;
1214
1215 err = wait_event_timeout(ifp->pend_8021x_wait,
1216 !brcmf_get_pend_8021x_cnt(ifp),
1217 msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
1218
1219 WARN_ON(!err);
1220
1221 return !err;
1222 }
1223
1224 /*
1225 * return chip id and rev of the device encoded in u32.
1226 */
1227 u32 brcmf_get_chip_info(struct brcmf_if *ifp)
1228 {
1229 struct brcmf_bus *bus = ifp->drvr->bus_if;
1230
1231 return bus->chip << 4 | bus->chiprev;
1232 }
1233
1234 static void brcmf_driver_register(struct work_struct *work)
1235 {
1236 #ifdef CONFIG_BRCMFMAC_SDIO
1237 brcmf_sdio_register();
1238 #endif
1239 #ifdef CONFIG_BRCMFMAC_USB
1240 brcmf_usb_register();
1241 #endif
1242 }
1243 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
1244
1245 static int __init brcmfmac_module_init(void)
1246 {
1247 brcmf_debugfs_init();
1248 #ifdef CONFIG_BRCMFMAC_SDIO
1249 brcmf_sdio_init();
1250 #endif
1251 if (!schedule_work(&brcmf_driver_work))
1252 return -EBUSY;
1253
1254 return 0;
1255 }
1256
1257 static void __exit brcmfmac_module_exit(void)
1258 {
1259 cancel_work_sync(&brcmf_driver_work);
1260
1261 #ifdef CONFIG_BRCMFMAC_SDIO
1262 brcmf_sdio_exit();
1263 #endif
1264 #ifdef CONFIG_BRCMFMAC_USB
1265 brcmf_usb_exit();
1266 #endif
1267 brcmf_debugfs_exit();
1268 }
1269
1270 module_init(brcmfmac_module_init);
1271 module_exit(brcmfmac_module_exit);
Linux with added FPC-III support