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 "core.h"
26 #include "bus.h"
27 #include "debug.h"
28 #include "fwil_types.h"
29 #include "p2p.h"
30 #include "cfg80211.h"
31 #include "fwil.h"
32 #include "fwsignal.h"
33 #include "feature.h"
34 #include "proto.h"
35 #include "pcie.h"
36 #include "common.h"
37 
38 MODULE_AUTHOR("Broadcom Corporation");
39 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
40 MODULE_LICENSE("Dual BSD/GPL");
41 
42 #define MAX_WAIT_FOR_8021X_TX		50	/* msecs */
43 
44 /* AMPDU rx reordering definitions */
45 #define BRCMF_RXREORDER_FLOWID_OFFSET		0
46 #define BRCMF_RXREORDER_MAXIDX_OFFSET		2
47 #define BRCMF_RXREORDER_FLAGS_OFFSET		4
48 #define BRCMF_RXREORDER_CURIDX_OFFSET		6
49 #define BRCMF_RXREORDER_EXPIDX_OFFSET		8
50 
51 #define BRCMF_RXREORDER_DEL_FLOW		0x01
52 #define BRCMF_RXREORDER_FLUSH_ALL		0x02
53 #define BRCMF_RXREORDER_CURIDX_VALID		0x04
54 #define BRCMF_RXREORDER_EXPIDX_VALID		0x08
55 #define BRCMF_RXREORDER_NEW_HOLE		0x10
56 
57 #define BRCMF_BSSIDX_INVALID			-1
58 
59 /* Error bits */
60 int brcmf_msg_level;
61 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
62 MODULE_PARM_DESC(debug, "level of debug output");
63 
64 /* P2P0 enable */
65 static int brcmf_p2p_enable;
66 module_param_named(p2pon, brcmf_p2p_enable, int, 0);
67 MODULE_PARM_DESC(p2pon, "enable legacy p2p management functionality");
68 
brcmf_ifname(struct brcmf_pub * drvr,int ifidx)69 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
70 {
71 	if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
72 		brcmf_err("ifidx %d out of range\n", ifidx);
73 		return "<if_bad>";
74 	}
75 
76 	if (drvr->iflist[ifidx] == NULL) {
77 		brcmf_err("null i/f %d\n", ifidx);
78 		return "<if_null>";
79 	}
80 
81 	if (drvr->iflist[ifidx]->ndev)
82 		return drvr->iflist[ifidx]->ndev->name;
83 
84 	return "<if_none>";
85 }
86 
brcmf_get_ifp(struct brcmf_pub * drvr,int ifidx)87 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
88 {
89 	struct brcmf_if *ifp;
90 	s32 bssidx;
91 
92 	if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
93 		brcmf_err("ifidx %d out of range\n", ifidx);
94 		return NULL;
95 	}
96 
97 	ifp = NULL;
98 	bssidx = drvr->if2bss[ifidx];
99 	if (bssidx >= 0)
100 		ifp = drvr->iflist[bssidx];
101 
102 	return ifp;
103 }
104 
_brcmf_set_multicast_list(struct work_struct * work)105 static void _brcmf_set_multicast_list(struct work_struct *work)
106 {
107 	struct brcmf_if *ifp;
108 	struct net_device *ndev;
109 	struct netdev_hw_addr *ha;
110 	u32 cmd_value, cnt;
111 	__le32 cnt_le;
112 	char *buf, *bufp;
113 	u32 buflen;
114 	s32 err;
115 
116 	ifp = container_of(work, struct brcmf_if, multicast_work);
117 
118 	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
119 
120 	ndev = ifp->ndev;
121 
122 	/* Determine initial value of allmulti flag */
123 	cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
124 
125 	/* Send down the multicast list first. */
126 	cnt = netdev_mc_count(ndev);
127 	buflen = sizeof(cnt) + (cnt * ETH_ALEN);
128 	buf = kmalloc(buflen, GFP_ATOMIC);
129 	if (!buf)
130 		return;
131 	bufp = buf;
132 
133 	cnt_le = cpu_to_le32(cnt);
134 	memcpy(bufp, &cnt_le, sizeof(cnt_le));
135 	bufp += sizeof(cnt_le);
136 
137 	netdev_for_each_mc_addr(ha, ndev) {
138 		if (!cnt)
139 			break;
140 		memcpy(bufp, ha->addr, ETH_ALEN);
141 		bufp += ETH_ALEN;
142 		cnt--;
143 	}
144 
145 	err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
146 	if (err < 0) {
147 		brcmf_err("Setting mcast_list failed, %d\n", err);
148 		cmd_value = cnt ? true : cmd_value;
149 	}
150 
151 	kfree(buf);
152 
153 	/*
154 	 * Now send the allmulti setting.  This is based on the setting in the
155 	 * net_device flags, but might be modified above to be turned on if we
156 	 * were trying to set some addresses and dongle rejected it...
157 	 */
158 	err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
159 	if (err < 0)
160 		brcmf_err("Setting allmulti failed, %d\n", err);
161 
162 	/*Finally, pick up the PROMISC flag */
163 	cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
164 	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
165 	if (err < 0)
166 		brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
167 			  err);
168 }
169 
170 static void
_brcmf_set_mac_address(struct work_struct * work)171 _brcmf_set_mac_address(struct work_struct *work)
172 {
173 	struct brcmf_if *ifp;
174 	s32 err;
175 
176 	ifp = container_of(work, struct brcmf_if, setmacaddr_work);
177 
178 	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
179 
180 	err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
181 				       ETH_ALEN);
182 	if (err < 0) {
183 		brcmf_err("Setting cur_etheraddr failed, %d\n", err);
184 	} else {
185 		brcmf_dbg(TRACE, "MAC address updated to %pM\n",
186 			  ifp->mac_addr);
187 		memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
188 	}
189 }
190 
brcmf_netdev_set_mac_address(struct net_device * ndev,void * addr)191 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
192 {
193 	struct brcmf_if *ifp = netdev_priv(ndev);
194 	struct sockaddr *sa = (struct sockaddr *)addr;
195 
196 	memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
197 	schedule_work(&ifp->setmacaddr_work);
198 	return 0;
199 }
200 
brcmf_netdev_set_multicast_list(struct net_device * ndev)201 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
202 {
203 	struct brcmf_if *ifp = netdev_priv(ndev);
204 
205 	schedule_work(&ifp->multicast_work);
206 }
207 
brcmf_netdev_start_xmit(struct sk_buff * skb,struct net_device * ndev)208 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
209 					   struct net_device *ndev)
210 {
211 	int ret;
212 	struct brcmf_if *ifp = netdev_priv(ndev);
213 	struct brcmf_pub *drvr = ifp->drvr;
214 	struct ethhdr *eh = (struct ethhdr *)(skb->data);
215 
216 	brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx);
217 
218 	/* Can the device send data? */
219 	if (drvr->bus_if->state != BRCMF_BUS_UP) {
220 		brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
221 		netif_stop_queue(ndev);
222 		dev_kfree_skb(skb);
223 		ret = -ENODEV;
224 		goto done;
225 	}
226 
227 	if (!drvr->iflist[ifp->bssidx]) {
228 		brcmf_err("bad ifidx %d\n", ifp->bssidx);
229 		netif_stop_queue(ndev);
230 		dev_kfree_skb(skb);
231 		ret = -ENODEV;
232 		goto done;
233 	}
234 
235 	/* Make sure there's enough room for any header */
236 	if (skb_headroom(skb) < drvr->hdrlen) {
237 		struct sk_buff *skb2;
238 
239 		brcmf_dbg(INFO, "%s: insufficient headroom\n",
240 			  brcmf_ifname(drvr, ifp->bssidx));
241 		drvr->bus_if->tx_realloc++;
242 		skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
243 		dev_kfree_skb(skb);
244 		skb = skb2;
245 		if (skb == NULL) {
246 			brcmf_err("%s: skb_realloc_headroom failed\n",
247 				  brcmf_ifname(drvr, ifp->bssidx));
248 			ret = -ENOMEM;
249 			goto done;
250 		}
251 	}
252 
253 	/* validate length for ether packet */
254 	if (skb->len < sizeof(*eh)) {
255 		ret = -EINVAL;
256 		dev_kfree_skb(skb);
257 		goto done;
258 	}
259 
260 	if (eh->h_proto == htons(ETH_P_PAE))
261 		atomic_inc(&ifp->pend_8021x_cnt);
262 
263 	ret = brcmf_fws_process_skb(ifp, skb);
264 
265 done:
266 	if (ret) {
267 		ifp->stats.tx_dropped++;
268 	} else {
269 		ifp->stats.tx_packets++;
270 		ifp->stats.tx_bytes += skb->len;
271 	}
272 
273 	/* Return ok: we always eat the packet */
274 	return NETDEV_TX_OK;
275 }
276 
brcmf_txflowblock_if(struct brcmf_if * ifp,enum brcmf_netif_stop_reason reason,bool state)277 void brcmf_txflowblock_if(struct brcmf_if *ifp,
278 			  enum brcmf_netif_stop_reason reason, bool state)
279 {
280 	unsigned long flags;
281 
282 	if (!ifp || !ifp->ndev)
283 		return;
284 
285 	brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
286 		  ifp->bssidx, ifp->netif_stop, reason, state);
287 
288 	spin_lock_irqsave(&ifp->netif_stop_lock, flags);
289 	if (state) {
290 		if (!ifp->netif_stop)
291 			netif_stop_queue(ifp->ndev);
292 		ifp->netif_stop |= reason;
293 	} else {
294 		ifp->netif_stop &= ~reason;
295 		if (!ifp->netif_stop)
296 			netif_wake_queue(ifp->ndev);
297 	}
298 	spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
299 }
300 
brcmf_txflowblock(struct device * dev,bool state)301 void brcmf_txflowblock(struct device *dev, bool state)
302 {
303 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
304 	struct brcmf_pub *drvr = bus_if->drvr;
305 
306 	brcmf_dbg(TRACE, "Enter\n");
307 
308 	brcmf_fws_bus_blocked(drvr, state);
309 }
310 
brcmf_netif_rx(struct brcmf_if * ifp,struct sk_buff * skb)311 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
312 {
313 	skb->dev = ifp->ndev;
314 	skb->protocol = eth_type_trans(skb, skb->dev);
315 
316 	if (skb->pkt_type == PACKET_MULTICAST)
317 		ifp->stats.multicast++;
318 
319 	/* Process special event packets */
320 	brcmf_fweh_process_skb(ifp->drvr, skb);
321 
322 	if (!(ifp->ndev->flags & IFF_UP)) {
323 		brcmu_pkt_buf_free_skb(skb);
324 		return;
325 	}
326 
327 	ifp->stats.rx_bytes += skb->len;
328 	ifp->stats.rx_packets++;
329 
330 	brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
331 	if (in_interrupt())
332 		netif_rx(skb);
333 	else
334 		/* If the receive is not processed inside an ISR,
335 		 * the softirqd must be woken explicitly to service
336 		 * the NET_RX_SOFTIRQ.  This is handled by netif_rx_ni().
337 		 */
338 		netif_rx_ni(skb);
339 }
340 
brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder * rfi,u8 start,u8 end,struct sk_buff_head * skb_list)341 static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
342 					 u8 start, u8 end,
343 					 struct sk_buff_head *skb_list)
344 {
345 	/* initialize return list */
346 	__skb_queue_head_init(skb_list);
347 
348 	if (rfi->pend_pkts == 0) {
349 		brcmf_dbg(INFO, "no packets in reorder queue\n");
350 		return;
351 	}
352 
353 	do {
354 		if (rfi->pktslots[start]) {
355 			__skb_queue_tail(skb_list, rfi->pktslots[start]);
356 			rfi->pktslots[start] = NULL;
357 		}
358 		start++;
359 		if (start > rfi->max_idx)
360 			start = 0;
361 	} while (start != end);
362 	rfi->pend_pkts -= skb_queue_len(skb_list);
363 }
364 
brcmf_rxreorder_process_info(struct brcmf_if * ifp,u8 * reorder_data,struct sk_buff * pkt)365 static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data,
366 					 struct sk_buff *pkt)
367 {
368 	u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
369 	struct brcmf_ampdu_rx_reorder *rfi;
370 	struct sk_buff_head reorder_list;
371 	struct sk_buff *pnext;
372 	u8 flags;
373 	u32 buf_size;
374 
375 	flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
376 	flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
377 
378 	/* validate flags and flow id */
379 	if (flags == 0xFF) {
380 		brcmf_err("invalid flags...so ignore this packet\n");
381 		brcmf_netif_rx(ifp, pkt);
382 		return;
383 	}
384 
385 	rfi = ifp->drvr->reorder_flows[flow_id];
386 	if (flags & BRCMF_RXREORDER_DEL_FLOW) {
387 		brcmf_dbg(INFO, "flow-%d: delete\n",
388 			  flow_id);
389 
390 		if (rfi == NULL) {
391 			brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
392 				  flow_id);
393 			brcmf_netif_rx(ifp, pkt);
394 			return;
395 		}
396 
397 		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
398 					     &reorder_list);
399 		/* add the last packet */
400 		__skb_queue_tail(&reorder_list, pkt);
401 		kfree(rfi);
402 		ifp->drvr->reorder_flows[flow_id] = NULL;
403 		goto netif_rx;
404 	}
405 	/* from here on we need a flow reorder instance */
406 	if (rfi == NULL) {
407 		buf_size = sizeof(*rfi);
408 		max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
409 
410 		buf_size += (max_idx + 1) * sizeof(pkt);
411 
412 		/* allocate space for flow reorder info */
413 		brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
414 			  flow_id, max_idx);
415 		rfi = kzalloc(buf_size, GFP_ATOMIC);
416 		if (rfi == NULL) {
417 			brcmf_err("failed to alloc buffer\n");
418 			brcmf_netif_rx(ifp, pkt);
419 			return;
420 		}
421 
422 		ifp->drvr->reorder_flows[flow_id] = rfi;
423 		rfi->pktslots = (struct sk_buff **)(rfi+1);
424 		rfi->max_idx = max_idx;
425 	}
426 	if (flags & BRCMF_RXREORDER_NEW_HOLE)  {
427 		if (rfi->pend_pkts) {
428 			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
429 						     rfi->exp_idx,
430 						     &reorder_list);
431 			WARN_ON(rfi->pend_pkts);
432 		} else {
433 			__skb_queue_head_init(&reorder_list);
434 		}
435 		rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
436 		rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
437 		rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
438 		rfi->pktslots[rfi->cur_idx] = pkt;
439 		rfi->pend_pkts++;
440 		brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
441 			  flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
442 	} else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
443 		cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
444 		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
445 
446 		if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
447 			/* still in the current hole */
448 			/* enqueue the current on the buffer chain */
449 			if (rfi->pktslots[cur_idx] != NULL) {
450 				brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
451 				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
452 				rfi->pktslots[cur_idx] = NULL;
453 			}
454 			rfi->pktslots[cur_idx] = pkt;
455 			rfi->pend_pkts++;
456 			rfi->cur_idx = cur_idx;
457 			brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
458 				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);
459 
460 			/* can return now as there is no reorder
461 			 * list to process.
462 			 */
463 			return;
464 		}
465 		if (rfi->exp_idx == cur_idx) {
466 			if (rfi->pktslots[cur_idx] != NULL) {
467 				brcmf_dbg(INFO, "error buffer pending..free it\n");
468 				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
469 				rfi->pktslots[cur_idx] = NULL;
470 			}
471 			rfi->pktslots[cur_idx] = pkt;
472 			rfi->pend_pkts++;
473 
474 			/* got the expected one. flush from current to expected
475 			 * and update expected
476 			 */
477 			brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
478 				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);
479 
480 			rfi->cur_idx = cur_idx;
481 			rfi->exp_idx = exp_idx;
482 
483 			brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
484 						     &reorder_list);
485 			brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
486 				  flow_id, skb_queue_len(&reorder_list),
487 				  rfi->pend_pkts);
488 		} else {
489 			u8 end_idx;
490 
491 			brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
492 				  flow_id, flags, rfi->cur_idx, rfi->exp_idx,
493 				  cur_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 			/* flush pkts first */
500 			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
501 						     &reorder_list);
502 
503 			if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
504 				__skb_queue_tail(&reorder_list, pkt);
505 			} else {
506 				rfi->pktslots[cur_idx] = pkt;
507 				rfi->pend_pkts++;
508 			}
509 			rfi->exp_idx = exp_idx;
510 			rfi->cur_idx = cur_idx;
511 		}
512 	} else {
513 		/* explicity window move updating the expected index */
514 		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
515 
516 		brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
517 			  flow_id, flags, rfi->exp_idx, exp_idx);
518 		if (flags & BRCMF_RXREORDER_FLUSH_ALL)
519 			end_idx =  rfi->exp_idx;
520 		else
521 			end_idx =  exp_idx;
522 
523 		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
524 					     &reorder_list);
525 		__skb_queue_tail(&reorder_list, pkt);
526 		/* set the new expected idx */
527 		rfi->exp_idx = exp_idx;
528 	}
529 netif_rx:
530 	skb_queue_walk_safe(&reorder_list, pkt, pnext) {
531 		__skb_unlink(pkt, &reorder_list);
532 		brcmf_netif_rx(ifp, pkt);
533 	}
534 }
535 
brcmf_rx_frame(struct device * dev,struct sk_buff * skb)536 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb)
537 {
538 	struct brcmf_if *ifp;
539 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
540 	struct brcmf_pub *drvr = bus_if->drvr;
541 	struct brcmf_skb_reorder_data *rd;
542 	int ret;
543 
544 	brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
545 
546 	/* process and remove protocol-specific header */
547 	ret = brcmf_proto_hdrpull(drvr, true, skb, &ifp);
548 
549 	if (ret || !ifp || !ifp->ndev) {
550 		if (ret != -ENODATA && ifp)
551 			ifp->stats.rx_errors++;
552 		brcmu_pkt_buf_free_skb(skb);
553 		return;
554 	}
555 
556 	rd = (struct brcmf_skb_reorder_data *)skb->cb;
557 	if (rd->reorder)
558 		brcmf_rxreorder_process_info(ifp, rd->reorder, skb);
559 	else
560 		brcmf_netif_rx(ifp, skb);
561 }
562 
brcmf_txfinalize(struct brcmf_if * ifp,struct sk_buff * txp,bool success)563 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
564 {
565 	struct ethhdr *eh;
566 	u16 type;
567 
568 	eh = (struct ethhdr *)(txp->data);
569 	type = ntohs(eh->h_proto);
570 
571 	if (type == ETH_P_PAE) {
572 		atomic_dec(&ifp->pend_8021x_cnt);
573 		if (waitqueue_active(&ifp->pend_8021x_wait))
574 			wake_up(&ifp->pend_8021x_wait);
575 	}
576 
577 	if (!success)
578 		ifp->stats.tx_errors++;
579 
580 	brcmu_pkt_buf_free_skb(txp);
581 }
582 
brcmf_txcomplete(struct device * dev,struct sk_buff * txp,bool success)583 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
584 {
585 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
586 	struct brcmf_pub *drvr = bus_if->drvr;
587 	struct brcmf_if *ifp;
588 
589 	/* await txstatus signal for firmware if active */
590 	if (brcmf_fws_fc_active(drvr->fws)) {
591 		if (!success)
592 			brcmf_fws_bustxfail(drvr->fws, txp);
593 	} else {
594 		if (brcmf_proto_hdrpull(drvr, false, txp, &ifp))
595 			brcmu_pkt_buf_free_skb(txp);
596 		else
597 			brcmf_txfinalize(ifp, txp, success);
598 	}
599 }
600 
brcmf_netdev_get_stats(struct net_device * ndev)601 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
602 {
603 	struct brcmf_if *ifp = netdev_priv(ndev);
604 
605 	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
606 
607 	return &ifp->stats;
608 }
609 
brcmf_ethtool_get_drvinfo(struct net_device * ndev,struct ethtool_drvinfo * info)610 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
611 				    struct ethtool_drvinfo *info)
612 {
613 	struct brcmf_if *ifp = netdev_priv(ndev);
614 	struct brcmf_pub *drvr = ifp->drvr;
615 	char drev[BRCMU_DOTREV_LEN] = "n/a";
616 
617 	if (drvr->revinfo.result == 0)
618 		brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
619 	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
620 	strlcpy(info->version, drev, sizeof(info->version));
621 	strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
622 	strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
623 		sizeof(info->bus_info));
624 }
625 
626 static const struct ethtool_ops brcmf_ethtool_ops = {
627 	.get_drvinfo = brcmf_ethtool_get_drvinfo,
628 };
629 
brcmf_netdev_stop(struct net_device * ndev)630 static int brcmf_netdev_stop(struct net_device *ndev)
631 {
632 	struct brcmf_if *ifp = netdev_priv(ndev);
633 
634 	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
635 
636 	brcmf_cfg80211_down(ndev);
637 
638 	brcmf_net_setcarrier(ifp, false);
639 
640 	return 0;
641 }
642 
brcmf_netdev_open(struct net_device * ndev)643 static int brcmf_netdev_open(struct net_device *ndev)
644 {
645 	struct brcmf_if *ifp = netdev_priv(ndev);
646 	struct brcmf_pub *drvr = ifp->drvr;
647 	struct brcmf_bus *bus_if = drvr->bus_if;
648 	u32 toe_ol;
649 
650 	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
651 
652 	/* If bus is not ready, can't continue */
653 	if (bus_if->state != BRCMF_BUS_UP) {
654 		brcmf_err("failed bus is not ready\n");
655 		return -EAGAIN;
656 	}
657 
658 	atomic_set(&ifp->pend_8021x_cnt, 0);
659 
660 	/* Get current TOE mode from dongle */
661 	if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
662 	    && (toe_ol & TOE_TX_CSUM_OL) != 0)
663 		ndev->features |= NETIF_F_IP_CSUM;
664 	else
665 		ndev->features &= ~NETIF_F_IP_CSUM;
666 
667 	if (brcmf_cfg80211_up(ndev)) {
668 		brcmf_err("failed to bring up cfg80211\n");
669 		return -EIO;
670 	}
671 
672 	/* Clear, carrier, set when connected or AP mode. */
673 	netif_carrier_off(ndev);
674 	return 0;
675 }
676 
677 static const struct net_device_ops brcmf_netdev_ops_pri = {
678 	.ndo_open = brcmf_netdev_open,
679 	.ndo_stop = brcmf_netdev_stop,
680 	.ndo_get_stats = brcmf_netdev_get_stats,
681 	.ndo_start_xmit = brcmf_netdev_start_xmit,
682 	.ndo_set_mac_address = brcmf_netdev_set_mac_address,
683 	.ndo_set_rx_mode = brcmf_netdev_set_multicast_list
684 };
685 
brcmf_net_attach(struct brcmf_if * ifp,bool rtnl_locked)686 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
687 {
688 	struct brcmf_pub *drvr = ifp->drvr;
689 	struct net_device *ndev;
690 	s32 err;
691 
692 	brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
693 		  ifp->mac_addr);
694 	ndev = ifp->ndev;
695 
696 	/* set appropriate operations */
697 	ndev->netdev_ops = &brcmf_netdev_ops_pri;
698 
699 	ndev->hard_header_len += drvr->hdrlen;
700 	ndev->ethtool_ops = &brcmf_ethtool_ops;
701 
702 	drvr->rxsz = ndev->mtu + ndev->hard_header_len +
703 			      drvr->hdrlen;
704 
705 	/* set the mac address */
706 	memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
707 
708 	INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
709 	INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
710 
711 	if (rtnl_locked)
712 		err = register_netdevice(ndev);
713 	else
714 		err = register_netdev(ndev);
715 	if (err != 0) {
716 		brcmf_err("couldn't register the net device\n");
717 		goto fail;
718 	}
719 
720 	brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
721 	return 0;
722 
723 fail:
724 	drvr->iflist[ifp->bssidx] = NULL;
725 	ndev->netdev_ops = NULL;
726 	free_netdev(ndev);
727 	return -EBADE;
728 }
729 
brcmf_net_detach(struct net_device * ndev)730 static void brcmf_net_detach(struct net_device *ndev)
731 {
732 	if (ndev->reg_state == NETREG_REGISTERED)
733 		unregister_netdev(ndev);
734 	else
735 		brcmf_cfg80211_free_netdev(ndev);
736 }
737 
brcmf_net_setcarrier(struct brcmf_if * ifp,bool on)738 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
739 {
740 	struct net_device *ndev;
741 
742 	brcmf_dbg(TRACE, "Enter, idx=%d carrier=%d\n", ifp->bssidx, on);
743 
744 	ndev = ifp->ndev;
745 	brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
746 	if (on) {
747 		if (!netif_carrier_ok(ndev))
748 			netif_carrier_on(ndev);
749 
750 	} else {
751 		if (netif_carrier_ok(ndev))
752 			netif_carrier_off(ndev);
753 	}
754 }
755 
brcmf_net_p2p_open(struct net_device * ndev)756 static int brcmf_net_p2p_open(struct net_device *ndev)
757 {
758 	brcmf_dbg(TRACE, "Enter\n");
759 
760 	return brcmf_cfg80211_up(ndev);
761 }
762 
brcmf_net_p2p_stop(struct net_device * ndev)763 static int brcmf_net_p2p_stop(struct net_device *ndev)
764 {
765 	brcmf_dbg(TRACE, "Enter\n");
766 
767 	return brcmf_cfg80211_down(ndev);
768 }
769 
brcmf_net_p2p_start_xmit(struct sk_buff * skb,struct net_device * ndev)770 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
771 					    struct net_device *ndev)
772 {
773 	if (skb)
774 		dev_kfree_skb_any(skb);
775 
776 	return NETDEV_TX_OK;
777 }
778 
779 static const struct net_device_ops brcmf_netdev_ops_p2p = {
780 	.ndo_open = brcmf_net_p2p_open,
781 	.ndo_stop = brcmf_net_p2p_stop,
782 	.ndo_start_xmit = brcmf_net_p2p_start_xmit
783 };
784 
brcmf_net_p2p_attach(struct brcmf_if * ifp)785 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
786 {
787 	struct net_device *ndev;
788 
789 	brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
790 		  ifp->mac_addr);
791 	ndev = ifp->ndev;
792 
793 	ndev->netdev_ops = &brcmf_netdev_ops_p2p;
794 
795 	/* set the mac address */
796 	memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
797 
798 	if (register_netdev(ndev) != 0) {
799 		brcmf_err("couldn't register the p2p net device\n");
800 		goto fail;
801 	}
802 
803 	brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
804 
805 	return 0;
806 
807 fail:
808 	ifp->drvr->iflist[ifp->bssidx] = NULL;
809 	ndev->netdev_ops = NULL;
810 	free_netdev(ndev);
811 	return -EBADE;
812 }
813 
brcmf_add_if(struct brcmf_pub * drvr,s32 bssidx,s32 ifidx,bool is_p2pdev,char * name,u8 * mac_addr)814 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
815 			      bool is_p2pdev, char *name, u8 *mac_addr)
816 {
817 	struct brcmf_if *ifp;
818 	struct net_device *ndev;
819 
820 	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
821 
822 	ifp = drvr->iflist[bssidx];
823 	/*
824 	 * Delete the existing interface before overwriting it
825 	 * in case we missed the BRCMF_E_IF_DEL event.
826 	 */
827 	if (ifp) {
828 		brcmf_err("ERROR: netdev:%s already exists\n",
829 			  ifp->ndev->name);
830 		if (ifidx) {
831 			netif_stop_queue(ifp->ndev);
832 			brcmf_net_detach(ifp->ndev);
833 			drvr->iflist[bssidx] = NULL;
834 		} else {
835 			brcmf_err("ignore IF event\n");
836 			return ERR_PTR(-EINVAL);
837 		}
838 	}
839 
840 	if (!brcmf_p2p_enable && is_p2pdev) {
841 		/* this is P2P_DEVICE interface */
842 		brcmf_dbg(INFO, "allocate non-netdev interface\n");
843 		ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
844 		if (!ifp)
845 			return ERR_PTR(-ENOMEM);
846 	} else {
847 		brcmf_dbg(INFO, "allocate netdev interface\n");
848 		/* Allocate netdev, including space for private structure */
849 		ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
850 				    NET_NAME_UNKNOWN, ether_setup);
851 		if (!ndev)
852 			return ERR_PTR(-ENOMEM);
853 
854 		ndev->destructor = brcmf_cfg80211_free_netdev;
855 		ifp = netdev_priv(ndev);
856 		ifp->ndev = ndev;
857 		/* store mapping ifidx to bssidx */
858 		if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
859 			drvr->if2bss[ifidx] = bssidx;
860 	}
861 
862 	ifp->drvr = drvr;
863 	drvr->iflist[bssidx] = ifp;
864 	ifp->ifidx = ifidx;
865 	ifp->bssidx = bssidx;
866 
867 	init_waitqueue_head(&ifp->pend_8021x_wait);
868 	spin_lock_init(&ifp->netif_stop_lock);
869 
870 	if (mac_addr != NULL)
871 		memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
872 
873 	brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
874 		  current->pid, name, ifp->mac_addr);
875 
876 	return ifp;
877 }
878 
brcmf_del_if(struct brcmf_pub * drvr,s32 bssidx)879 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
880 {
881 	struct brcmf_if *ifp;
882 
883 	ifp = drvr->iflist[bssidx];
884 	drvr->iflist[bssidx] = NULL;
885 	if (!ifp) {
886 		brcmf_err("Null interface, idx=%d\n", bssidx);
887 		return;
888 	}
889 	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
890 	if (drvr->if2bss[ifp->ifidx] == bssidx)
891 		drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID;
892 	if (ifp->ndev) {
893 		if (bssidx == 0) {
894 			if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
895 				rtnl_lock();
896 				brcmf_netdev_stop(ifp->ndev);
897 				rtnl_unlock();
898 			}
899 		} else {
900 			netif_stop_queue(ifp->ndev);
901 		}
902 
903 		if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
904 			cancel_work_sync(&ifp->setmacaddr_work);
905 			cancel_work_sync(&ifp->multicast_work);
906 		}
907 		brcmf_net_detach(ifp->ndev);
908 	} else {
909 		/* Only p2p device interfaces which get dynamically created
910 		 * end up here. In this case the p2p module should be informed
911 		 * about the removal of the interface within the firmware. If
912 		 * not then p2p commands towards the firmware will cause some
913 		 * serious troublesome side effects. The p2p module will clean
914 		 * up the ifp if needed.
915 		 */
916 		brcmf_p2p_ifp_removed(ifp);
917 		kfree(ifp);
918 	}
919 }
920 
brcmf_remove_interface(struct brcmf_if * ifp)921 void brcmf_remove_interface(struct brcmf_if *ifp)
922 {
923 	if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bssidx] != ifp))
924 		return;
925 	brcmf_dbg(TRACE, "Enter, bssidx=%d, ifidx=%d\n", ifp->bssidx,
926 		  ifp->ifidx);
927 	brcmf_fws_del_interface(ifp);
928 	brcmf_del_if(ifp->drvr, ifp->bssidx);
929 }
930 
brcmf_get_next_free_bsscfgidx(struct brcmf_pub * drvr)931 int brcmf_get_next_free_bsscfgidx(struct brcmf_pub *drvr)
932 {
933 	int ifidx;
934 	int bsscfgidx;
935 	bool available;
936 	int highest;
937 
938 	available = false;
939 	bsscfgidx = 2;
940 	highest = 2;
941 	for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
942 		if (drvr->iflist[ifidx]) {
943 			if (drvr->iflist[ifidx]->bssidx == bsscfgidx)
944 				bsscfgidx = highest + 1;
945 			else if (drvr->iflist[ifidx]->bssidx > highest)
946 				highest = drvr->iflist[ifidx]->bssidx;
947 		} else {
948 			available = true;
949 		}
950 	}
951 
952 	return available ? bsscfgidx : -ENOMEM;
953 }
954 
brcmf_attach(struct device * dev)955 int brcmf_attach(struct device *dev)
956 {
957 	struct brcmf_pub *drvr = NULL;
958 	int ret = 0;
959 	int i;
960 
961 	brcmf_dbg(TRACE, "Enter\n");
962 
963 	/* Allocate primary brcmf_info */
964 	drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
965 	if (!drvr)
966 		return -ENOMEM;
967 
968 	for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
969 		drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
970 
971 	mutex_init(&drvr->proto_block);
972 
973 	/* Link to bus module */
974 	drvr->hdrlen = 0;
975 	drvr->bus_if = dev_get_drvdata(dev);
976 	drvr->bus_if->drvr = drvr;
977 
978 	/* attach debug facilities */
979 	brcmf_debug_attach(drvr);
980 
981 	/* Attach and link in the protocol */
982 	ret = brcmf_proto_attach(drvr);
983 	if (ret != 0) {
984 		brcmf_err("brcmf_prot_attach failed\n");
985 		goto fail;
986 	}
987 
988 	/* attach firmware event handler */
989 	brcmf_fweh_attach(drvr);
990 
991 	return ret;
992 
993 fail:
994 	brcmf_detach(dev);
995 
996 	return ret;
997 }
998 
brcmf_revinfo_read(struct seq_file * s,void * data)999 static int brcmf_revinfo_read(struct seq_file *s, void *data)
1000 {
1001 	struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
1002 	struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
1003 	char drev[BRCMU_DOTREV_LEN];
1004 	char brev[BRCMU_BOARDREV_LEN];
1005 
1006 	seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
1007 	seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
1008 	seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
1009 	seq_printf(s, "chipnum: %u (%x)\n", ri->chipnum, ri->chipnum);
1010 	seq_printf(s, "chiprev: %u\n", ri->chiprev);
1011 	seq_printf(s, "chippkg: %u\n", ri->chippkg);
1012 	seq_printf(s, "corerev: %u\n", ri->corerev);
1013 	seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
1014 	seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
1015 	seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
1016 	seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
1017 	seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
1018 	seq_printf(s, "bus: %u\n", ri->bus);
1019 	seq_printf(s, "phytype: %u\n", ri->phytype);
1020 	seq_printf(s, "phyrev: %u\n", ri->phyrev);
1021 	seq_printf(s, "anarev: %u\n", ri->anarev);
1022 	seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
1023 
1024 	return 0;
1025 }
1026 
brcmf_bus_start(struct device * dev)1027 int brcmf_bus_start(struct device *dev)
1028 {
1029 	int ret = -1;
1030 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1031 	struct brcmf_pub *drvr = bus_if->drvr;
1032 	struct brcmf_if *ifp;
1033 	struct brcmf_if *p2p_ifp;
1034 
1035 	brcmf_dbg(TRACE, "\n");
1036 
1037 	/* add primary networking interface */
1038 	ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
1039 	if (IS_ERR(ifp))
1040 		return PTR_ERR(ifp);
1041 
1042 	p2p_ifp = NULL;
1043 
1044 	/* signal bus ready */
1045 	brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
1046 
1047 	/* Bus is ready, do any initialization */
1048 	ret = brcmf_c_preinit_dcmds(ifp);
1049 	if (ret < 0)
1050 		goto fail;
1051 
1052 	brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
1053 
1054 	/* assure we have chipid before feature attach */
1055 	if (!bus_if->chip) {
1056 		bus_if->chip = drvr->revinfo.chipnum;
1057 		bus_if->chiprev = drvr->revinfo.chiprev;
1058 		brcmf_dbg(INFO, "firmware revinfo: chip %x (%d) rev %d\n",
1059 			  bus_if->chip, bus_if->chip, bus_if->chiprev);
1060 	}
1061 	brcmf_feat_attach(drvr);
1062 
1063 	ret = brcmf_fws_init(drvr);
1064 	if (ret < 0)
1065 		goto fail;
1066 
1067 	brcmf_fws_add_interface(ifp);
1068 
1069 	drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev,
1070 					     brcmf_p2p_enable);
1071 	if (drvr->config == NULL) {
1072 		ret = -ENOMEM;
1073 		goto fail;
1074 	}
1075 
1076 	ret = brcmf_net_attach(ifp, false);
1077 
1078 	if ((!ret) && (brcmf_p2p_enable)) {
1079 		p2p_ifp = drvr->iflist[1];
1080 		if (p2p_ifp)
1081 			ret = brcmf_net_p2p_attach(p2p_ifp);
1082 	}
1083 fail:
1084 	if (ret < 0) {
1085 		brcmf_err("failed: %d\n", ret);
1086 		if (drvr->config) {
1087 			brcmf_cfg80211_detach(drvr->config);
1088 			drvr->config = NULL;
1089 		}
1090 		if (drvr->fws) {
1091 			brcmf_fws_del_interface(ifp);
1092 			brcmf_fws_deinit(drvr);
1093 		}
1094 		if (ifp)
1095 			brcmf_net_detach(ifp->ndev);
1096 		if (p2p_ifp)
1097 			brcmf_net_detach(p2p_ifp->ndev);
1098 		return ret;
1099 	}
1100 	return 0;
1101 }
1102 
brcmf_bus_add_txhdrlen(struct device * dev,uint len)1103 void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
1104 {
1105 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1106 	struct brcmf_pub *drvr = bus_if->drvr;
1107 
1108 	if (drvr) {
1109 		drvr->hdrlen += len;
1110 	}
1111 }
1112 
brcmf_bus_detach(struct brcmf_pub * drvr)1113 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1114 {
1115 	brcmf_dbg(TRACE, "Enter\n");
1116 
1117 	if (drvr) {
1118 		/* Stop the bus module */
1119 		brcmf_bus_stop(drvr->bus_if);
1120 	}
1121 }
1122 
brcmf_dev_reset(struct device * dev)1123 void brcmf_dev_reset(struct device *dev)
1124 {
1125 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1126 	struct brcmf_pub *drvr = bus_if->drvr;
1127 
1128 	if (drvr == NULL)
1129 		return;
1130 
1131 	if (drvr->iflist[0])
1132 		brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1133 }
1134 
brcmf_detach(struct device * dev)1135 void brcmf_detach(struct device *dev)
1136 {
1137 	s32 i;
1138 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1139 	struct brcmf_pub *drvr = bus_if->drvr;
1140 
1141 	brcmf_dbg(TRACE, "Enter\n");
1142 
1143 	if (drvr == NULL)
1144 		return;
1145 
1146 	/* stop firmware event handling */
1147 	brcmf_fweh_detach(drvr);
1148 	if (drvr->config)
1149 		brcmf_p2p_detach(&drvr->config->p2p);
1150 
1151 	brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
1152 
1153 	/* make sure primary interface removed last */
1154 	for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1155 		brcmf_remove_interface(drvr->iflist[i]);
1156 
1157 	brcmf_cfg80211_detach(drvr->config);
1158 
1159 	brcmf_fws_deinit(drvr);
1160 
1161 	brcmf_bus_detach(drvr);
1162 
1163 	brcmf_proto_detach(drvr);
1164 
1165 	brcmf_debug_detach(drvr);
1166 	bus_if->drvr = NULL;
1167 	kfree(drvr);
1168 }
1169 
brcmf_iovar_data_set(struct device * dev,char * name,void * data,u32 len)1170 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
1171 {
1172 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1173 	struct brcmf_if *ifp = bus_if->drvr->iflist[0];
1174 
1175 	return brcmf_fil_iovar_data_set(ifp, name, data, len);
1176 }
1177 
brcmf_get_pend_8021x_cnt(struct brcmf_if * ifp)1178 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1179 {
1180 	return atomic_read(&ifp->pend_8021x_cnt);
1181 }
1182 
brcmf_netdev_wait_pend8021x(struct brcmf_if * ifp)1183 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
1184 {
1185 	int err;
1186 
1187 	err = wait_event_timeout(ifp->pend_8021x_wait,
1188 				 !brcmf_get_pend_8021x_cnt(ifp),
1189 				 msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
1190 
1191 	WARN_ON(!err);
1192 
1193 	return !err;
1194 }
1195 
brcmf_bus_change_state(struct brcmf_bus * bus,enum brcmf_bus_state state)1196 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
1197 {
1198 	struct brcmf_pub *drvr = bus->drvr;
1199 	struct net_device *ndev;
1200 	int ifidx;
1201 
1202 	brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
1203 	bus->state = state;
1204 
1205 	if (state == BRCMF_BUS_UP) {
1206 		for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
1207 			if ((drvr->iflist[ifidx]) &&
1208 			    (drvr->iflist[ifidx]->ndev)) {
1209 				ndev = drvr->iflist[ifidx]->ndev;
1210 				if (netif_queue_stopped(ndev))
1211 					netif_wake_queue(ndev);
1212 			}
1213 		}
1214 	}
1215 }
1216 
brcmf_driver_register(struct work_struct * work)1217 static void brcmf_driver_register(struct work_struct *work)
1218 {
1219 #ifdef CONFIG_BRCMFMAC_SDIO
1220 	brcmf_sdio_register();
1221 #endif
1222 #ifdef CONFIG_BRCMFMAC_USB
1223 	brcmf_usb_register();
1224 #endif
1225 #ifdef CONFIG_BRCMFMAC_PCIE
1226 	brcmf_pcie_register();
1227 #endif
1228 }
1229 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
1230 
brcmfmac_module_init(void)1231 static int __init brcmfmac_module_init(void)
1232 {
1233 	brcmf_debugfs_init();
1234 #ifdef CONFIG_BRCMFMAC_SDIO
1235 	brcmf_sdio_init();
1236 #endif
1237 	if (!schedule_work(&brcmf_driver_work))
1238 		return -EBUSY;
1239 
1240 	return 0;
1241 }
1242 
brcmfmac_module_exit(void)1243 static void __exit brcmfmac_module_exit(void)
1244 {
1245 	cancel_work_sync(&brcmf_driver_work);
1246 
1247 #ifdef CONFIG_BRCMFMAC_SDIO
1248 	brcmf_sdio_exit();
1249 #endif
1250 #ifdef CONFIG_BRCMFMAC_USB
1251 	brcmf_usb_exit();
1252 #endif
1253 #ifdef CONFIG_BRCMFMAC_PCIE
1254 	brcmf_pcie_exit();
1255 #endif
1256 	brcmf_debugfs_exit();
1257 }
1258 
1259 module_init(brcmfmac_module_init);
1260 module_exit(brcmfmac_module_exit);
1261