projects / deliverable / linux.git / blob
? search:


d7c76ce9d8cb3d74dccb79c863e5db1efd9a7446
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / dhd_linux.c
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/kthread.h>
22 #include <linux/slab.h>
23 #include <linux/skbuff.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/mmc/sdio_func.h>
27 #include <linux/random.h>
28 #include <linux/spinlock.h>
29 #include <linux/ethtool.h>
30 #include <linux/fcntl.h>
31 #include <linux/fs.h>
32 #include <linux/uaccess.h>
33 #include <linux/hardirq.h>
34 #include <linux/mutex.h>
35 #include <linux/wait.h>
36 #include <linux/module.h>
37 #include <net/cfg80211.h>
38 #include <net/rtnetlink.h>
39 #include <defs.h>
40 #include <brcmu_utils.h>
41 #include <brcmu_wifi.h>
42
43 #include "dhd.h"
44 #include "dhd_bus.h"
45 #include "dhd_proto.h"
46 #include "dhd_dbg.h"
47 #include "wl_cfg80211.h"
48
49 MODULE_AUTHOR("Broadcom Corporation");
50 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
51 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
52 MODULE_LICENSE("Dual BSD/GPL");
53
54
55 /* Interface control information */
56 struct brcmf_if {
57 struct brcmf_pub *drvr; /* back pointer to brcmf_pub */
58 /* OS/stack specifics */
59 struct net_device *ndev;
60 struct net_device_stats stats;
61 int idx; /* iface idx in dongle */
62 u8 mac_addr[ETH_ALEN]; /* assigned MAC address */
63 };
64
65 /* Error bits */
66 int brcmf_msg_level = BRCMF_ERROR_VAL;
67 module_param(brcmf_msg_level, int, 0);
68
69 int brcmf_ifname2idx(struct brcmf_pub *drvr, char *name)
70 {
71 int i = BRCMF_MAX_IFS;
72 struct brcmf_if *ifp;
73
74 if (name == NULL || *name == '\0')
75 return 0;
76
77 while (--i > 0) {
78 ifp = drvr->iflist[i];
79 if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ))
80 break;
81 }
82
83 brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
84
85 return i; /* default - the primary interface */
86 }
87
88 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
89 {
90 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
91 brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
92 return "<if_bad>";
93 }
94
95 if (drvr->iflist[ifidx] == NULL) {
96 brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
97 return "<if_null>";
98 }
99
100 if (drvr->iflist[ifidx]->ndev)
101 return drvr->iflist[ifidx]->ndev->name;
102
103 return "<if_none>";
104 }
105
106 static void _brcmf_set_multicast_list(struct work_struct *work)
107 {
108 struct net_device *ndev;
109 struct netdev_hw_addr *ha;
110 u32 dcmd_value, cnt;
111 __le32 cnt_le;
112 __le32 dcmd_le_value;
113
114 struct brcmf_dcmd dcmd;
115 char *buf, *bufp;
116 uint buflen;
117 int ret;
118
119 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,
120 multicast_work);
121
122 ndev = drvr->iflist[0]->ndev;
123 cnt = netdev_mc_count(ndev);
124
125 /* Determine initial value of allmulti flag */
126 dcmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
127
128 /* Send down the multicast list first. */
129
130 buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
131 bufp = buf = kmalloc(buflen, GFP_ATOMIC);
132 if (!bufp)
133 return;
134
135 strcpy(bufp, "mcast_list");
136 bufp += strlen("mcast_list") + 1;
137
138 cnt_le = cpu_to_le32(cnt);
139 memcpy(bufp, &cnt_le, sizeof(cnt));
140 bufp += sizeof(cnt_le);
141
142 netdev_for_each_mc_addr(ha, ndev) {
143 if (!cnt)
144 break;
145 memcpy(bufp, ha->addr, ETH_ALEN);
146 bufp += ETH_ALEN;
147 cnt--;
148 }
149
150 memset(&dcmd, 0, sizeof(dcmd));
151 dcmd.cmd = BRCMF_C_SET_VAR;
152 dcmd.buf = buf;
153 dcmd.len = buflen;
154 dcmd.set = true;
155
156 ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
157 if (ret < 0) {
158 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
159 brcmf_ifname(drvr, 0), cnt);
160 dcmd_value = cnt ? true : dcmd_value;
161 }
162
163 kfree(buf);
164
165 /* Now send the allmulti setting. This is based on the setting in the
166 * net_device flags, but might be modified above to be turned on if we
167 * were trying to set some addresses and dongle rejected it...
168 */
169
170 buflen = sizeof("allmulti") + sizeof(dcmd_value);
171 buf = kmalloc(buflen, GFP_ATOMIC);
172 if (!buf)
173 return;
174
175 dcmd_le_value = cpu_to_le32(dcmd_value);
176
177 if (!brcmf_c_mkiovar
178 ("allmulti", (void *)&dcmd_le_value,
179 sizeof(dcmd_le_value), buf, buflen)) {
180 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
181 brcmf_ifname(drvr, 0),
182 (int)sizeof(dcmd_value), buflen);
183 kfree(buf);
184 return;
185 }
186
187 memset(&dcmd, 0, sizeof(dcmd));
188 dcmd.cmd = BRCMF_C_SET_VAR;
189 dcmd.buf = buf;
190 dcmd.len = buflen;
191 dcmd.set = true;
192
193 ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
194 if (ret < 0) {
195 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
196 brcmf_ifname(drvr, 0),
197 le32_to_cpu(dcmd_le_value));
198 }
199
200 kfree(buf);
201
202 /* Finally, pick up the PROMISC flag as well, like the NIC
203 driver does */
204
205 dcmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
206 dcmd_le_value = cpu_to_le32(dcmd_value);
207
208 memset(&dcmd, 0, sizeof(dcmd));
209 dcmd.cmd = BRCMF_C_SET_PROMISC;
210 dcmd.buf = &dcmd_le_value;
211 dcmd.len = sizeof(dcmd_le_value);
212 dcmd.set = true;
213
214 ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
215 if (ret < 0) {
216 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
217 brcmf_ifname(drvr, 0),
218 le32_to_cpu(dcmd_le_value));
219 }
220 }
221
222 static void
223 _brcmf_set_mac_address(struct work_struct *work)
224 {
225 char buf[32];
226 struct brcmf_dcmd dcmd;
227 int ret;
228
229 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,
230 setmacaddr_work);
231
232 brcmf_dbg(TRACE, "enter\n");
233 if (!brcmf_c_mkiovar("cur_etheraddr", (char *)drvr->macvalue,
234 ETH_ALEN, buf, 32)) {
235 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
236 brcmf_ifname(drvr, 0));
237 return;
238 }
239 memset(&dcmd, 0, sizeof(dcmd));
240 dcmd.cmd = BRCMF_C_SET_VAR;
241 dcmd.buf = buf;
242 dcmd.len = 32;
243 dcmd.set = true;
244
245 ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
246 if (ret < 0)
247 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
248 brcmf_ifname(drvr, 0));
249 else
250 memcpy(drvr->iflist[0]->ndev->dev_addr,
251 drvr->macvalue, ETH_ALEN);
252
253 return;
254 }
255
256 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
257 {
258 struct brcmf_if *ifp = netdev_priv(ndev);
259 struct brcmf_pub *drvr = ifp->drvr;
260 struct sockaddr *sa = (struct sockaddr *)addr;
261
262 memcpy(&drvr->macvalue, sa->sa_data, ETH_ALEN);
263 schedule_work(&drvr->setmacaddr_work);
264 return 0;
265 }
266
267 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
268 {
269 struct brcmf_if *ifp = netdev_priv(ndev);
270 struct brcmf_pub *drvr = ifp->drvr;
271
272 schedule_work(&drvr->multicast_work);
273 }
274
275 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
276 {
277 int ret;
278 struct brcmf_if *ifp = netdev_priv(ndev);
279 struct brcmf_pub *drvr = ifp->drvr;
280
281 brcmf_dbg(TRACE, "Enter\n");
282
283 /* Reject if down */
284 if (!drvr->bus_if->drvr_up ||
285 (drvr->bus_if->state == BRCMF_BUS_DOWN)) {
286 brcmf_dbg(ERROR, "xmit rejected drvup=%d state=%d\n",
287 drvr->bus_if->drvr_up,
288 drvr->bus_if->state);
289 netif_stop_queue(ndev);
290 return -ENODEV;
291 }
292
293 if (!drvr->iflist[ifp->idx]) {
294 brcmf_dbg(ERROR, "bad ifidx %d\n", ifp->idx);
295 netif_stop_queue(ndev);
296 return -ENODEV;
297 }
298
299 /* Make sure there's enough room for any header */
300 if (skb_headroom(skb) < drvr->hdrlen) {
301 struct sk_buff *skb2;
302
303 brcmf_dbg(INFO, "%s: insufficient headroom\n",
304 brcmf_ifname(drvr, ifp->idx));
305 drvr->bus_if->tx_realloc++;
306 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
307 dev_kfree_skb(skb);
308 skb = skb2;
309 if (skb == NULL) {
310 brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
311 brcmf_ifname(drvr, ifp->idx));
312 ret = -ENOMEM;
313 goto done;
314 }
315 }
316
317 /* Update multicast statistic */
318 if (skb->len >= ETH_ALEN) {
319 u8 *pktdata = (u8 *)(skb->data);
320 struct ethhdr *eh = (struct ethhdr *)pktdata;
321
322 if (is_multicast_ether_addr(eh->h_dest))
323 drvr->tx_multicast++;
324 if (ntohs(eh->h_proto) == ETH_P_PAE)
325 atomic_inc(&drvr->pend_8021x_cnt);
326 }
327
328 /* If the protocol uses a data header, apply it */
329 brcmf_proto_hdrpush(drvr, ifp->idx, skb);
330
331 /* Use bus module to send data frame */
332 ret = drvr->bus_if->brcmf_bus_txdata(drvr->dev, skb);
333
334 done:
335 if (ret)
336 drvr->bus_if->dstats.tx_dropped++;
337 else
338 drvr->bus_if->dstats.tx_packets++;
339
340 /* Return ok: we always eat the packet */
341 return 0;
342 }
343
344 void brcmf_txflowblock(struct device *dev, bool state)
345 {
346 struct net_device *ndev;
347 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
348 struct brcmf_pub *drvr = bus_if->drvr;
349 int i;
350
351 brcmf_dbg(TRACE, "Enter\n");
352
353 for (i = 0; i < BRCMF_MAX_IFS; i++)
354 if (drvr->iflist[i]) {
355 ndev = drvr->iflist[i]->ndev;
356 if (state)
357 netif_stop_queue(ndev);
358 else
359 netif_wake_queue(ndev);
360 }
361 }
362
363 static int brcmf_host_event(struct brcmf_pub *drvr, int *ifidx,
364 void *pktdata, struct brcmf_event_msg *event,
365 void **data)
366 {
367 int bcmerror = 0;
368
369 bcmerror = brcmf_c_host_event(drvr, ifidx, pktdata, event, data);
370 if (bcmerror != 0)
371 return bcmerror;
372
373 if (drvr->iflist[*ifidx]->ndev)
374 brcmf_cfg80211_event(drvr->iflist[*ifidx]->ndev,
375 event, *data);
376
377 return bcmerror;
378 }
379
380 void brcmf_rx_frame(struct device *dev, int ifidx,
381 struct sk_buff_head *skb_list)
382 {
383 unsigned char *eth;
384 uint len;
385 void *data;
386 struct sk_buff *skb, *pnext;
387 struct brcmf_if *ifp;
388 struct brcmf_event_msg event;
389 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
390 struct brcmf_pub *drvr = bus_if->drvr;
391
392 brcmf_dbg(TRACE, "Enter\n");
393
394 skb_queue_walk_safe(skb_list, skb, pnext) {
395 skb_unlink(skb, skb_list);
396
397 /* Get the protocol, maintain skb around eth_type_trans()
398 * The main reason for this hack is for the limitation of
399 * Linux 2.4 where 'eth_type_trans' uses the
400 * 'net->hard_header_len'
401 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
402 * coping of the packet coming from the network stack to add
403 * BDC, Hardware header etc, during network interface
404 * registration
405 * we set the 'net->hard_header_len' to ETH_HLEN + extra space
406 * required
407 * for BDC, Hardware header etc. and not just the ETH_HLEN
408 */
409 eth = skb->data;
410 len = skb->len;
411
412 ifp = drvr->iflist[ifidx];
413 if (ifp == NULL)
414 ifp = drvr->iflist[0];
415
416 if (!ifp || !ifp->ndev ||
417 ifp->ndev->reg_state != NETREG_REGISTERED) {
418 brcmu_pkt_buf_free_skb(skb);
419 continue;
420 }
421
422 skb->dev = ifp->ndev;
423 skb->protocol = eth_type_trans(skb, skb->dev);
424
425 if (skb->pkt_type == PACKET_MULTICAST)
426 bus_if->dstats.multicast++;
427
428 skb->data = eth;
429 skb->len = len;
430
431 /* Strip header, count, deliver upward */
432 skb_pull(skb, ETH_HLEN);
433
434 /* Process special event packets and then discard them */
435 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
436 brcmf_host_event(drvr, &ifidx,
437 skb_mac_header(skb),
438 &event, &data);
439
440 if (drvr->iflist[ifidx]) {
441 ifp = drvr->iflist[ifidx];
442 ifp->ndev->last_rx = jiffies;
443 }
444
445 bus_if->dstats.rx_bytes += skb->len;
446 bus_if->dstats.rx_packets++; /* Local count */
447
448 if (in_interrupt())
449 netif_rx(skb);
450 else
451 /* If the receive is not processed inside an ISR,
452 * the softirqd must be woken explicitly to service
453 * the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled
454 * by netif_rx_ni(), but in earlier kernels, we need
455 * to do it manually.
456 */
457 netif_rx_ni(skb);
458 }
459 }
460
461 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
462 {
463 uint ifidx;
464 struct ethhdr *eh;
465 u16 type;
466 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
467 struct brcmf_pub *drvr = bus_if->drvr;
468
469 brcmf_proto_hdrpull(dev, &ifidx, txp);
470
471 eh = (struct ethhdr *)(txp->data);
472 type = ntohs(eh->h_proto);
473
474 if (type == ETH_P_PAE)
475 atomic_dec(&drvr->pend_8021x_cnt);
476
477 }
478
479 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
480 {
481 struct brcmf_if *ifp = netdev_priv(ndev);
482 struct brcmf_bus *bus_if = ifp->drvr->bus_if;
483
484 brcmf_dbg(TRACE, "Enter\n");
485
486 /* Copy dongle stats to net device stats */
487 ifp->stats.rx_packets = bus_if->dstats.rx_packets;
488 ifp->stats.tx_packets = bus_if->dstats.tx_packets;
489 ifp->stats.rx_bytes = bus_if->dstats.rx_bytes;
490 ifp->stats.tx_bytes = bus_if->dstats.tx_bytes;
491 ifp->stats.rx_errors = bus_if->dstats.rx_errors;
492 ifp->stats.tx_errors = bus_if->dstats.tx_errors;
493 ifp->stats.rx_dropped = bus_if->dstats.rx_dropped;
494 ifp->stats.tx_dropped = bus_if->dstats.tx_dropped;
495 ifp->stats.multicast = bus_if->dstats.multicast;
496
497 return &ifp->stats;
498 }
499
500 /* Retrieve current toe component enables, which are kept
501 as a bitmap in toe_ol iovar */
502 static int brcmf_toe_get(struct brcmf_pub *drvr, int ifidx, u32 *toe_ol)
503 {
504 struct brcmf_dcmd dcmd;
505 __le32 toe_le;
506 char buf[32];
507 int ret;
508
509 memset(&dcmd, 0, sizeof(dcmd));
510
511 dcmd.cmd = BRCMF_C_GET_VAR;
512 dcmd.buf = buf;
513 dcmd.len = (uint) sizeof(buf);
514 dcmd.set = false;
515
516 strcpy(buf, "toe_ol");
517 ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len);
518 if (ret < 0) {
519 /* Check for older dongle image that doesn't support toe_ol */
520 if (ret == -EIO) {
521 brcmf_dbg(ERROR, "%s: toe not supported by device\n",
522 brcmf_ifname(drvr, ifidx));
523 return -EOPNOTSUPP;
524 }
525
526 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
527 brcmf_ifname(drvr, ifidx), ret);
528 return ret;
529 }
530
531 memcpy(&toe_le, buf, sizeof(u32));
532 *toe_ol = le32_to_cpu(toe_le);
533 return 0;
534 }
535
536 /* Set current toe component enables in toe_ol iovar,
537 and set toe global enable iovar */
538 static int brcmf_toe_set(struct brcmf_pub *drvr, int ifidx, u32 toe_ol)
539 {
540 struct brcmf_dcmd dcmd;
541 char buf[32];
542 int ret;
543 __le32 toe_le = cpu_to_le32(toe_ol);
544
545 memset(&dcmd, 0, sizeof(dcmd));
546
547 dcmd.cmd = BRCMF_C_SET_VAR;
548 dcmd.buf = buf;
549 dcmd.len = (uint) sizeof(buf);
550 dcmd.set = true;
551
552 /* Set toe_ol as requested */
553 strcpy(buf, "toe_ol");
554 memcpy(&buf[sizeof("toe_ol")], &toe_le, sizeof(u32));
555
556 ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len);
557 if (ret < 0) {
558 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
559 brcmf_ifname(drvr, ifidx), ret);
560 return ret;
561 }
562
563 /* Enable toe globally only if any components are enabled. */
564 toe_le = cpu_to_le32(toe_ol != 0);
565
566 strcpy(buf, "toe");
567 memcpy(&buf[sizeof("toe")], &toe_le, sizeof(u32));
568
569 ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len);
570 if (ret < 0) {
571 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
572 brcmf_ifname(drvr, ifidx), ret);
573 return ret;
574 }
575
576 return 0;
577 }
578
579 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
580 struct ethtool_drvinfo *info)
581 {
582 struct brcmf_if *ifp = netdev_priv(ndev);
583 struct brcmf_pub *drvr = ifp->drvr;
584
585 sprintf(info->driver, KBUILD_MODNAME);
586 sprintf(info->version, "%lu", drvr->drv_version);
587 sprintf(info->bus_info, "%s", dev_name(drvr->dev));
588 }
589
590 static const struct ethtool_ops brcmf_ethtool_ops = {
591 .get_drvinfo = brcmf_ethtool_get_drvinfo,
592 };
593
594 static int brcmf_ethtool(struct brcmf_pub *drvr, void __user *uaddr)
595 {
596 struct ethtool_drvinfo info;
597 char drvname[sizeof(info.driver)];
598 u32 cmd;
599 struct ethtool_value edata;
600 u32 toe_cmpnt, csum_dir;
601 int ret;
602
603 brcmf_dbg(TRACE, "Enter\n");
604
605 /* all ethtool calls start with a cmd word */
606 if (copy_from_user(&cmd, uaddr, sizeof(u32)))
607 return -EFAULT;
608
609 switch (cmd) {
610 case ETHTOOL_GDRVINFO:
611 /* Copy out any request driver name */
612 if (copy_from_user(&info, uaddr, sizeof(info)))
613 return -EFAULT;
614 strncpy(drvname, info.driver, sizeof(info.driver));
615 drvname[sizeof(info.driver) - 1] = '\0';
616
617 /* clear struct for return */
618 memset(&info, 0, sizeof(info));
619 info.cmd = cmd;
620
621 /* if requested, identify ourselves */
622 if (strcmp(drvname, "?dhd") == 0) {
623 sprintf(info.driver, "dhd");
624 strcpy(info.version, BRCMF_VERSION_STR);
625 }
626
627 /* otherwise, require dongle to be up */
628 else if (!drvr->bus_if->drvr_up) {
629 brcmf_dbg(ERROR, "dongle is not up\n");
630 return -ENODEV;
631 }
632
633 /* finally, report dongle driver type */
634 else if (drvr->iswl)
635 sprintf(info.driver, "wl");
636 else
637 sprintf(info.driver, "xx");
638
639 sprintf(info.version, "%lu", drvr->drv_version);
640 if (copy_to_user(uaddr, &info, sizeof(info)))
641 return -EFAULT;
642 brcmf_dbg(CTL, "given %*s, returning %s\n",
643 (int)sizeof(drvname), drvname, info.driver);
644 break;
645
646 /* Get toe offload components from dongle */
647 case ETHTOOL_GRXCSUM:
648 case ETHTOOL_GTXCSUM:
649 ret = brcmf_toe_get(drvr, 0, &toe_cmpnt);
650 if (ret < 0)
651 return ret;
652
653 csum_dir =
654 (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
655
656 edata.cmd = cmd;
657 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
658
659 if (copy_to_user(uaddr, &edata, sizeof(edata)))
660 return -EFAULT;
661 break;
662
663 /* Set toe offload components in dongle */
664 case ETHTOOL_SRXCSUM:
665 case ETHTOOL_STXCSUM:
666 if (copy_from_user(&edata, uaddr, sizeof(edata)))
667 return -EFAULT;
668
669 /* Read the current settings, update and write back */
670 ret = brcmf_toe_get(drvr, 0, &toe_cmpnt);
671 if (ret < 0)
672 return ret;
673
674 csum_dir =
675 (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
676
677 if (edata.data != 0)
678 toe_cmpnt |= csum_dir;
679 else
680 toe_cmpnt &= ~csum_dir;
681
682 ret = brcmf_toe_set(drvr, 0, toe_cmpnt);
683 if (ret < 0)
684 return ret;
685
686 /* If setting TX checksum mode, tell Linux the new mode */
687 if (cmd == ETHTOOL_STXCSUM) {
688 if (edata.data)
689 drvr->iflist[0]->ndev->features |=
690 NETIF_F_IP_CSUM;
691 else
692 drvr->iflist[0]->ndev->features &=
693 ~NETIF_F_IP_CSUM;
694 }
695
696 break;
697
698 default:
699 return -EOPNOTSUPP;
700 }
701
702 return 0;
703 }
704
705 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
706 int cmd)
707 {
708 struct brcmf_if *ifp = netdev_priv(ndev);
709 struct brcmf_pub *drvr = ifp->drvr;
710
711 brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifp->idx, cmd);
712
713 if (!drvr->iflist[ifp->idx])
714 return -1;
715
716 if (cmd == SIOCETHTOOL)
717 return brcmf_ethtool(drvr, ifr->ifr_data);
718
719 return -EOPNOTSUPP;
720 }
721
722 /* called only from within this driver. Sends a command to the dongle. */
723 s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len)
724 {
725 struct brcmf_dcmd dcmd;
726 s32 err = 0;
727 int buflen = 0;
728 bool is_set_key_cmd;
729 struct brcmf_if *ifp = netdev_priv(ndev);
730 struct brcmf_pub *drvr = ifp->drvr;
731
732 memset(&dcmd, 0, sizeof(dcmd));
733 dcmd.cmd = cmd;
734 dcmd.buf = arg;
735 dcmd.len = len;
736
737 if (dcmd.buf != NULL)
738 buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN);
739
740 /* send to dongle (must be up, and wl) */
741 if ((drvr->bus_if->state != BRCMF_BUS_DATA)) {
742 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
743 err = -EIO;
744 goto done;
745 }
746
747 if (!drvr->iswl) {
748 err = -EIO;
749 goto done;
750 }
751
752 /*
753 * Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and
754 * set key CMD to prevent M4 encryption.
755 */
756 is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) ||
757 ((dcmd.cmd == BRCMF_C_SET_VAR) &&
758 !(strncmp("wsec_key", dcmd.buf, 9))) ||
759 ((dcmd.cmd == BRCMF_C_SET_VAR) &&
760 !(strncmp("bsscfg:wsec_key", dcmd.buf, 15))));
761 if (is_set_key_cmd)
762 brcmf_netdev_wait_pend8021x(ndev);
763
764 err = brcmf_proto_dcmd(drvr, ifp->idx, &dcmd, buflen);
765
766 done:
767 if (err > 0)
768 err = 0;
769
770 return err;
771 }
772
773 int brcmf_netlink_dcmd(struct net_device *ndev, struct brcmf_dcmd *dcmd)
774 {
775 brcmf_dbg(TRACE, "enter: cmd %x buf %p len %d\n",
776 dcmd->cmd, dcmd->buf, dcmd->len);
777
778 return brcmf_exec_dcmd(ndev, dcmd->cmd, dcmd->buf, dcmd->len);
779 }
780
781 static int brcmf_netdev_stop(struct net_device *ndev)
782 {
783 struct brcmf_if *ifp = netdev_priv(ndev);
784 struct brcmf_pub *drvr = ifp->drvr;
785
786 brcmf_dbg(TRACE, "Enter\n");
787 brcmf_cfg80211_down(drvr->config);
788 if (drvr->bus_if->drvr_up == 0)
789 return 0;
790
791 /* Set state and stop OS transmissions */
792 drvr->bus_if->drvr_up = false;
793 netif_stop_queue(ndev);
794
795 return 0;
796 }
797
798 static int brcmf_netdev_open(struct net_device *ndev)
799 {
800 struct brcmf_if *ifp = netdev_priv(ndev);
801 struct brcmf_pub *drvr = ifp->drvr;
802 struct brcmf_bus *bus_if = drvr->bus_if;
803 u32 toe_ol;
804 s32 ret = 0;
805 uint up = 0;
806
807 brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
808
809 if (ifp->idx == 0) { /* do it only for primary eth0 */
810 /* If bus is not ready, can't continue */
811 if (bus_if->state != BRCMF_BUS_DATA) {
812 brcmf_dbg(ERROR, "failed bus is not ready\n");
813 return -EAGAIN;
814 }
815
816 atomic_set(&drvr->pend_8021x_cnt, 0);
817
818 memcpy(ndev->dev_addr, drvr->mac, ETH_ALEN);
819
820 /* Get current TOE mode from dongle */
821 if (brcmf_toe_get(drvr, ifp->idx, &toe_ol) >= 0
822 && (toe_ol & TOE_TX_CSUM_OL) != 0)
823 drvr->iflist[ifp->idx]->ndev->features |=
824 NETIF_F_IP_CSUM;
825 else
826 drvr->iflist[ifp->idx]->ndev->features &=
827 ~NETIF_F_IP_CSUM;
828 }
829
830 /* make sure RF is ready for work */
831 brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_UP, (char *)&up, sizeof(up));
832
833 /* Allow transmit calls */
834 netif_start_queue(ndev);
835 drvr->bus_if->drvr_up = true;
836 if (brcmf_cfg80211_up(drvr->config)) {
837 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
838 return -1;
839 }
840
841 return ret;
842 }
843
844 static const struct net_device_ops brcmf_netdev_ops_pri = {
845 .ndo_open = brcmf_netdev_open,
846 .ndo_stop = brcmf_netdev_stop,
847 .ndo_get_stats = brcmf_netdev_get_stats,
848 .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
849 .ndo_start_xmit = brcmf_netdev_start_xmit,
850 .ndo_set_mac_address = brcmf_netdev_set_mac_address,
851 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
852 };
853
854 static int brcmf_net_attach(struct brcmf_if *ifp)
855 {
856 struct brcmf_pub *drvr = ifp->drvr;
857 struct net_device *ndev;
858 u8 temp_addr[ETH_ALEN];
859
860 brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
861
862 ndev = drvr->iflist[ifp->idx]->ndev;
863 ndev->netdev_ops = &brcmf_netdev_ops_pri;
864
865 /*
866 * determine mac address to use
867 */
868 if (is_valid_ether_addr(ifp->mac_addr))
869 memcpy(temp_addr, ifp->mac_addr, ETH_ALEN);
870 else
871 memcpy(temp_addr, drvr->mac, ETH_ALEN);
872
873 if (ifp->idx == 1) {
874 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
875 /* ACCESSPOINT INTERFACE CASE */
876 temp_addr[0] |= 0X02; /* set bit 2 ,
877 - Locally Administered address */
878
879 }
880 ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
881 ndev->ethtool_ops = &brcmf_ethtool_ops;
882
883 drvr->rxsz = ndev->mtu + ndev->hard_header_len +
884 drvr->hdrlen;
885
886 memcpy(ndev->dev_addr, temp_addr, ETH_ALEN);
887
888 /* attach to cfg80211 for primary interface */
889 if (!ifp->idx) {
890 drvr->config = brcmf_cfg80211_attach(ndev, drvr->dev, drvr);
891 if (drvr->config == NULL) {
892 brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
893 goto fail;
894 }
895 }
896
897 if (register_netdev(ndev) != 0) {
898 brcmf_dbg(ERROR, "couldn't register the net device\n");
899 goto fail;
900 }
901
902 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
903
904 return 0;
905
906 fail:
907 ndev->netdev_ops = NULL;
908 return -EBADE;
909 }
910
911 int
912 brcmf_add_if(struct device *dev, int ifidx, char *name, u8 *mac_addr)
913 {
914 struct brcmf_if *ifp;
915 struct net_device *ndev;
916 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
917 struct brcmf_pub *drvr = bus_if->drvr;
918
919 brcmf_dbg(TRACE, "idx %d\n", ifidx);
920
921 ifp = drvr->iflist[ifidx];
922 /*
923 * Delete the existing interface before overwriting it
924 * in case we missed the BRCMF_E_IF_DEL event.
925 */
926 if (ifp) {
927 brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
928 ifp->ndev->name);
929 netif_stop_queue(ifp->ndev);
930 unregister_netdev(ifp->ndev);
931 free_netdev(ifp->ndev);
932 drvr->iflist[ifidx] = NULL;
933 }
934
935 /* Allocate netdev, including space for private structure */
936 ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
937 if (!ndev) {
938 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
939 return -ENOMEM;
940 }
941
942 ifp = netdev_priv(ndev);
943 ifp->ndev = ndev;
944 ifp->drvr = drvr;
945 drvr->iflist[ifidx] = ifp;
946 ifp->idx = ifidx;
947 if (mac_addr != NULL)
948 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
949
950 if (brcmf_net_attach(ifp)) {
951 brcmf_dbg(ERROR, "brcmf_net_attach failed");
952 free_netdev(ifp->ndev);
953 drvr->iflist[ifidx] = NULL;
954 return -EOPNOTSUPP;
955 }
956
957 brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
958 current->pid, ifp->ndev->name);
959
960 return 0;
961 }
962
963 void brcmf_del_if(struct brcmf_pub *drvr, int ifidx)
964 {
965 struct brcmf_if *ifp;
966
967 brcmf_dbg(TRACE, "idx %d\n", ifidx);
968
969 ifp = drvr->iflist[ifidx];
970 if (!ifp) {
971 brcmf_dbg(ERROR, "Null interface\n");
972 return;
973 }
974 if (ifp->ndev) {
975 if (ifidx == 0) {
976 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
977 rtnl_lock();
978 brcmf_netdev_stop(ifp->ndev);
979 rtnl_unlock();
980 }
981 } else {
982 netif_stop_queue(ifp->ndev);
983 }
984
985 unregister_netdev(ifp->ndev);
986 drvr->iflist[ifidx] = NULL;
987 if (ifidx == 0)
988 brcmf_cfg80211_detach(drvr->config);
989 free_netdev(ifp->ndev);
990 }
991 }
992
993 int brcmf_attach(uint bus_hdrlen, struct device *dev)
994 {
995 struct brcmf_pub *drvr = NULL;
996 int ret = 0;
997
998 brcmf_dbg(TRACE, "Enter\n");
999
1000 /* Allocate primary brcmf_info */
1001 drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
1002 if (!drvr)
1003 return -ENOMEM;
1004
1005 mutex_init(&drvr->proto_block);
1006
1007 /* Link to bus module */
1008 drvr->hdrlen = bus_hdrlen;
1009 drvr->bus_if = dev_get_drvdata(dev);
1010 drvr->bus_if->drvr = drvr;
1011 drvr->dev = dev;
1012
1013 /* create device debugfs folder */
1014 brcmf_debugfs_attach(drvr);
1015
1016 /* Attach and link in the protocol */
1017 ret = brcmf_proto_attach(drvr);
1018 if (ret != 0) {
1019 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
1020 goto fail;
1021 }
1022
1023 INIT_WORK(&drvr->setmacaddr_work, _brcmf_set_mac_address);
1024 INIT_WORK(&drvr->multicast_work, _brcmf_set_multicast_list);
1025
1026 INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
1027
1028 return ret;
1029
1030 fail:
1031 brcmf_detach(dev);
1032
1033 return ret;
1034 }
1035
1036 int brcmf_bus_start(struct device *dev)
1037 {
1038 int ret = -1;
1039 /* Room for "event_msgs" + '\0' + bitvec */
1040 char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
1041 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1042 struct brcmf_pub *drvr = bus_if->drvr;
1043
1044 brcmf_dbg(TRACE, "\n");
1045
1046 /* Bring up the bus */
1047 ret = bus_if->brcmf_bus_init(dev);
1048 if (ret != 0) {
1049 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
1050 return ret;
1051 }
1052
1053 brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1054 iovbuf, sizeof(iovbuf));
1055 brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1056 sizeof(iovbuf));
1057 memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1058
1059 setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1060 setbit(drvr->eventmask, BRCMF_E_PRUNE);
1061 setbit(drvr->eventmask, BRCMF_E_AUTH);
1062 setbit(drvr->eventmask, BRCMF_E_REASSOC);
1063 setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1064 setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1065 setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1066 setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1067 setbit(drvr->eventmask, BRCMF_E_JOIN);
1068 setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1069 setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1070 setbit(drvr->eventmask, BRCMF_E_LINK);
1071 setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1072 setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1073 setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1074 setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1075 setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1076 setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1077
1078 /* enable dongle roaming event */
1079
1080 drvr->pktfilter_count = 1;
1081 /* Setup filter to allow only unicast */
1082 drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1083
1084 /* Bus is ready, do any protocol initialization */
1085 ret = brcmf_proto_init(drvr);
1086 if (ret < 0)
1087 return ret;
1088
1089 /* add primary networking interface */
1090 ret = brcmf_add_if(dev, 0, "wlan%d", drvr->mac);
1091 if (ret < 0)
1092 return ret;
1093
1094 /* signal bus ready */
1095 bus_if->state = BRCMF_BUS_DATA;
1096 return 0;
1097 }
1098
1099 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1100 {
1101 brcmf_dbg(TRACE, "Enter\n");
1102
1103 if (drvr) {
1104 /* Stop the protocol module */
1105 brcmf_proto_stop(drvr);
1106
1107 /* Stop the bus module */
1108 drvr->bus_if->brcmf_bus_stop(drvr->dev);
1109 }
1110 }
1111
1112 void brcmf_detach(struct device *dev)
1113 {
1114 int i;
1115 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1116 struct brcmf_pub *drvr = bus_if->drvr;
1117
1118 brcmf_dbg(TRACE, "Enter\n");
1119
1120
1121 /* make sure primary interface removed last */
1122 for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1123 if (drvr->iflist[i])
1124 brcmf_del_if(drvr, i);
1125
1126 brcmf_bus_detach(drvr);
1127
1128 if (drvr->prot) {
1129 cancel_work_sync(&drvr->setmacaddr_work);
1130 cancel_work_sync(&drvr->multicast_work);
1131 brcmf_proto_detach(drvr);
1132 }
1133
1134 brcmf_debugfs_detach(drvr);
1135 bus_if->drvr = NULL;
1136 kfree(drvr);
1137 }
1138
1139 static int brcmf_get_pend_8021x_cnt(struct brcmf_pub *drvr)
1140 {
1141 return atomic_read(&drvr->pend_8021x_cnt);
1142 }
1143
1144 #define MAX_WAIT_FOR_8021X_TX 10
1145
1146 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1147 {
1148 struct brcmf_if *ifp = netdev_priv(ndev);
1149 struct brcmf_pub *drvr = ifp->drvr;
1150 int timeout = 10 * HZ / 1000;
1151 int ntimes = MAX_WAIT_FOR_8021X_TX;
1152 int pend = brcmf_get_pend_8021x_cnt(drvr);
1153
1154 while (ntimes && pend) {
1155 if (pend) {
1156 set_current_state(TASK_INTERRUPTIBLE);
1157 schedule_timeout(timeout);
1158 set_current_state(TASK_RUNNING);
1159 ntimes--;
1160 }
1161 pend = brcmf_get_pend_8021x_cnt(drvr);
1162 }
1163 return pend;
1164 }
1165
1166 #ifdef DEBUG
1167 int brcmf_write_to_file(struct brcmf_pub *drvr, const u8 *buf, int size)
1168 {
1169 int ret = 0;
1170 struct file *fp;
1171 mm_segment_t old_fs;
1172 loff_t pos = 0;
1173
1174 /* change to KERNEL_DS address limit */
1175 old_fs = get_fs();
1176 set_fs(KERNEL_DS);
1177
1178 /* open file to write */
1179 fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1180 if (!fp) {
1181 brcmf_dbg(ERROR, "open file error\n");
1182 ret = -1;
1183 goto exit;
1184 }
1185
1186 /* Write buf to file */
1187 fp->f_op->write(fp, (char __user *)buf, size, &pos);
1188
1189 exit:
1190 /* free buf before return */
1191 kfree(buf);
1192 /* close file before return */
1193 if (fp)
1194 filp_close(fp, NULL);
1195 /* restore previous address limit */
1196 set_fs(old_fs);
1197
1198 return ret;
1199 }
1200 #endif /* DEBUG */
1201
1202 static void brcmf_driver_init(struct work_struct *work)
1203 {
1204 brcmf_debugfs_init();
1205
1206 #ifdef CONFIG_BRCMFMAC_SDIO
1207 brcmf_sdio_init();
1208 #endif
1209 #ifdef CONFIG_BRCMFMAC_USB
1210 brcmf_usb_init();
1211 #endif
1212 }
1213 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
1214
1215 static int __init brcmfmac_module_init(void)
1216 {
1217 if (!schedule_work(&brcmf_driver_work))
1218 return -EBUSY;
1219
1220 return 0;
1221 }
1222
1223 static void __exit brcmfmac_module_exit(void)
1224 {
1225 cancel_work_sync(&brcmf_driver_work);
1226
1227 #ifdef CONFIG_BRCMFMAC_SDIO
1228 brcmf_sdio_exit();
1229 #endif
1230 #ifdef CONFIG_BRCMFMAC_USB
1231 brcmf_usb_exit();
1232 #endif
1233 brcmf_debugfs_exit();
1234 }
1235
1236 module_init(brcmfmac_module_init);
1237 module_exit(brcmfmac_module_exit);
Linux kernel - Deliverables
This page took 0.285844 seconds and 4 git commands to generate.