1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * This file is part of wl1271
4  *
5  * Copyright (C) 2009-2010 Nokia Corporation
6  *
7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8  */
9 
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <linux/pm_runtime.h>
13 #include <linux/spi/spi.h>
14 #include <linux/etherdevice.h>
15 #include <linux/ieee80211.h>
16 #include <linux/slab.h>
17 
18 #include "wlcore.h"
19 #include "debug.h"
20 #include "io.h"
21 #include "acx.h"
22 #include "wl12xx_80211.h"
23 #include "cmd.h"
24 #include "event.h"
25 #include "tx.h"
26 #include "hw_ops.h"
27 
28 #define WL1271_CMD_FAST_POLL_COUNT       50
29 #define WL1271_WAIT_EVENT_FAST_POLL_COUNT 20
30 
31 /*
32  * send command to firmware
33  *
34  * @wl: wl struct
35  * @id: command id
36  * @buf: buffer containing the command, must work with dma
37  * @len: length of the buffer
38  * return the cmd status code on success.
39  */
__wlcore_cmd_send(struct wl1271 * wl,u16 id,void * buf,size_t len,size_t res_len)40 static int __wlcore_cmd_send(struct wl1271 *wl, u16 id, void *buf,
41 			     size_t len, size_t res_len)
42 {
43 	struct wl1271_cmd_header *cmd;
44 	unsigned long timeout;
45 	u32 intr;
46 	int ret;
47 	u16 status;
48 	u16 poll_count = 0;
49 
50 	if (unlikely(wl->state == WLCORE_STATE_RESTARTING &&
51 		     id != CMD_STOP_FWLOGGER))
52 		return -EIO;
53 
54 	if (WARN_ON_ONCE(len < sizeof(*cmd)))
55 		return -EIO;
56 
57 	cmd = buf;
58 	cmd->id = cpu_to_le16(id);
59 	cmd->status = 0;
60 
61 	WARN_ON(len % 4 != 0);
62 	WARN_ON(test_bit(WL1271_FLAG_IN_ELP, &wl->flags));
63 
64 	ret = wlcore_write(wl, wl->cmd_box_addr, buf, len, false);
65 	if (ret < 0)
66 		return ret;
67 
68 	/*
69 	 * TODO: we just need this because one bit is in a different
70 	 * place.  Is there any better way?
71 	 */
72 	ret = wl->ops->trigger_cmd(wl, wl->cmd_box_addr, buf, len);
73 	if (ret < 0)
74 		return ret;
75 
76 	timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
77 
78 	ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
79 	if (ret < 0)
80 		return ret;
81 
82 	while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
83 		if (time_after(jiffies, timeout)) {
84 			wl1271_error("command complete timeout");
85 			return -ETIMEDOUT;
86 		}
87 
88 		poll_count++;
89 		if (poll_count < WL1271_CMD_FAST_POLL_COUNT)
90 			udelay(10);
91 		else
92 			msleep(1);
93 
94 		ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
95 		if (ret < 0)
96 			return ret;
97 	}
98 
99 	/* read back the status code of the command */
100 	if (res_len == 0)
101 		res_len = sizeof(struct wl1271_cmd_header);
102 
103 	ret = wlcore_read(wl, wl->cmd_box_addr, cmd, res_len, false);
104 	if (ret < 0)
105 		return ret;
106 
107 	status = le16_to_cpu(cmd->status);
108 
109 	ret = wlcore_write_reg(wl, REG_INTERRUPT_ACK,
110 			       WL1271_ACX_INTR_CMD_COMPLETE);
111 	if (ret < 0)
112 		return ret;
113 
114 	return status;
115 }
116 
117 /*
118  * send command to fw and return cmd status on success
119  * valid_rets contains a bitmap of allowed error codes
120  */
wlcore_cmd_send_failsafe(struct wl1271 * wl,u16 id,void * buf,size_t len,size_t res_len,unsigned long valid_rets)121 static int wlcore_cmd_send_failsafe(struct wl1271 *wl, u16 id, void *buf,
122 				    size_t len, size_t res_len,
123 				    unsigned long valid_rets)
124 {
125 	int ret = __wlcore_cmd_send(wl, id, buf, len, res_len);
126 
127 	if (ret < 0)
128 		goto fail;
129 
130 	/* success is always a valid status */
131 	valid_rets |= BIT(CMD_STATUS_SUCCESS);
132 
133 	if (ret >= MAX_COMMAND_STATUS ||
134 	    !test_bit(ret, &valid_rets)) {
135 		wl1271_error("command execute failure %d", ret);
136 		ret = -EIO;
137 		goto fail;
138 	}
139 	return ret;
140 fail:
141 	wl12xx_queue_recovery_work(wl);
142 	return ret;
143 }
144 
145 /*
146  * wrapper for wlcore_cmd_send that accept only CMD_STATUS_SUCCESS
147  * return 0 on success.
148  */
wl1271_cmd_send(struct wl1271 * wl,u16 id,void * buf,size_t len,size_t res_len)149 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
150 		    size_t res_len)
151 {
152 	int ret = wlcore_cmd_send_failsafe(wl, id, buf, len, res_len, 0);
153 
154 	if (ret < 0)
155 		return ret;
156 	return 0;
157 }
158 EXPORT_SYMBOL_GPL(wl1271_cmd_send);
159 
160 /*
161  * Poll the mailbox event field until any of the bits in the mask is set or a
162  * timeout occurs (WL1271_EVENT_TIMEOUT in msecs)
163  */
wlcore_cmd_wait_for_event_or_timeout(struct wl1271 * wl,u32 mask,bool * timeout)164 int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
165 					 u32 mask, bool *timeout)
166 {
167 	u32 *events_vector;
168 	u32 event;
169 	unsigned long timeout_time;
170 	u16 poll_count = 0;
171 	int ret = 0;
172 
173 	*timeout = false;
174 
175 	events_vector = kmalloc(sizeof(*events_vector), GFP_KERNEL | GFP_DMA);
176 	if (!events_vector)
177 		return -ENOMEM;
178 
179 	timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
180 
181 	ret = pm_runtime_get_sync(wl->dev);
182 	if (ret < 0) {
183 		pm_runtime_put_noidle(wl->dev);
184 		goto free_vector;
185 	}
186 
187 	do {
188 		if (time_after(jiffies, timeout_time)) {
189 			wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
190 				     (int)mask);
191 			*timeout = true;
192 			goto out;
193 		}
194 
195 		poll_count++;
196 		if (poll_count < WL1271_WAIT_EVENT_FAST_POLL_COUNT)
197 			usleep_range(50, 51);
198 		else
199 			usleep_range(1000, 5000);
200 
201 		/* read from both event fields */
202 		ret = wlcore_read(wl, wl->mbox_ptr[0], events_vector,
203 				  sizeof(*events_vector), false);
204 		if (ret < 0)
205 			goto out;
206 
207 		event = *events_vector & mask;
208 
209 		ret = wlcore_read(wl, wl->mbox_ptr[1], events_vector,
210 				  sizeof(*events_vector), false);
211 		if (ret < 0)
212 			goto out;
213 
214 		event |= *events_vector & mask;
215 	} while (!event);
216 
217 out:
218 	pm_runtime_mark_last_busy(wl->dev);
219 	pm_runtime_put_autosuspend(wl->dev);
220 free_vector:
221 	kfree(events_vector);
222 	return ret;
223 }
224 EXPORT_SYMBOL_GPL(wlcore_cmd_wait_for_event_or_timeout);
225 
wl12xx_cmd_role_enable(struct wl1271 * wl,u8 * addr,u8 role_type,u8 * role_id)226 int wl12xx_cmd_role_enable(struct wl1271 *wl, u8 *addr, u8 role_type,
227 			   u8 *role_id)
228 {
229 	struct wl12xx_cmd_role_enable *cmd;
230 	int ret;
231 
232 	wl1271_debug(DEBUG_CMD, "cmd role enable");
233 
234 	if (WARN_ON(*role_id != WL12XX_INVALID_ROLE_ID))
235 		return -EBUSY;
236 
237 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
238 	if (!cmd) {
239 		ret = -ENOMEM;
240 		goto out;
241 	}
242 
243 	/* get role id */
244 	cmd->role_id = find_first_zero_bit(wl->roles_map, WL12XX_MAX_ROLES);
245 	if (cmd->role_id >= WL12XX_MAX_ROLES) {
246 		ret = -EBUSY;
247 		goto out_free;
248 	}
249 
250 	memcpy(cmd->mac_address, addr, ETH_ALEN);
251 	cmd->role_type = role_type;
252 
253 	ret = wl1271_cmd_send(wl, CMD_ROLE_ENABLE, cmd, sizeof(*cmd), 0);
254 	if (ret < 0) {
255 		wl1271_error("failed to initiate cmd role enable");
256 		goto out_free;
257 	}
258 
259 	__set_bit(cmd->role_id, wl->roles_map);
260 	*role_id = cmd->role_id;
261 
262 out_free:
263 	kfree(cmd);
264 
265 out:
266 	return ret;
267 }
268 
wl12xx_cmd_role_disable(struct wl1271 * wl,u8 * role_id)269 int wl12xx_cmd_role_disable(struct wl1271 *wl, u8 *role_id)
270 {
271 	struct wl12xx_cmd_role_disable *cmd;
272 	int ret;
273 
274 	wl1271_debug(DEBUG_CMD, "cmd role disable");
275 
276 	if (WARN_ON(*role_id == WL12XX_INVALID_ROLE_ID))
277 		return -ENOENT;
278 
279 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
280 	if (!cmd) {
281 		ret = -ENOMEM;
282 		goto out;
283 	}
284 	cmd->role_id = *role_id;
285 
286 	ret = wl1271_cmd_send(wl, CMD_ROLE_DISABLE, cmd, sizeof(*cmd), 0);
287 	if (ret < 0) {
288 		wl1271_error("failed to initiate cmd role disable");
289 		goto out_free;
290 	}
291 
292 	__clear_bit(*role_id, wl->roles_map);
293 	*role_id = WL12XX_INVALID_ROLE_ID;
294 
295 out_free:
296 	kfree(cmd);
297 
298 out:
299 	return ret;
300 }
301 
wlcore_get_new_session_id(struct wl1271 * wl,u8 hlid)302 static int wlcore_get_new_session_id(struct wl1271 *wl, u8 hlid)
303 {
304 	if (wl->session_ids[hlid] >= SESSION_COUNTER_MAX)
305 		wl->session_ids[hlid] = 0;
306 
307 	wl->session_ids[hlid]++;
308 
309 	return wl->session_ids[hlid];
310 }
311 
wl12xx_allocate_link(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 * hlid)312 int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
313 {
314 	unsigned long flags;
315 	u8 link = find_first_zero_bit(wl->links_map, wl->num_links);
316 	if (link >= wl->num_links)
317 		return -EBUSY;
318 
319 	wl->session_ids[link] = wlcore_get_new_session_id(wl, link);
320 
321 	/* these bits are used by op_tx */
322 	spin_lock_irqsave(&wl->wl_lock, flags);
323 	__set_bit(link, wl->links_map);
324 	__set_bit(link, wlvif->links_map);
325 	spin_unlock_irqrestore(&wl->wl_lock, flags);
326 
327 	/*
328 	 * take the last "freed packets" value from the current FW status.
329 	 * on recovery, we might not have fw_status yet, and
330 	 * tx_lnk_free_pkts will be NULL. check for it.
331 	 */
332 	if (wl->fw_status->counters.tx_lnk_free_pkts)
333 		wl->links[link].prev_freed_pkts =
334 			wl->fw_status->counters.tx_lnk_free_pkts[link];
335 	wl->links[link].wlvif = wlvif;
336 
337 	/*
338 	 * Take saved value for total freed packets from wlvif, in case this is
339 	 * recovery/resume
340 	 */
341 	if (wlvif->bss_type != BSS_TYPE_AP_BSS)
342 		wl->links[link].total_freed_pkts = wlvif->total_freed_pkts;
343 
344 	*hlid = link;
345 
346 	wl->active_link_count++;
347 	return 0;
348 }
349 
wl12xx_free_link(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 * hlid)350 void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
351 {
352 	unsigned long flags;
353 
354 	if (*hlid == WL12XX_INVALID_LINK_ID)
355 		return;
356 
357 	/* these bits are used by op_tx */
358 	spin_lock_irqsave(&wl->wl_lock, flags);
359 	__clear_bit(*hlid, wl->links_map);
360 	__clear_bit(*hlid, wlvif->links_map);
361 	spin_unlock_irqrestore(&wl->wl_lock, flags);
362 
363 	wl->links[*hlid].allocated_pkts = 0;
364 	wl->links[*hlid].prev_freed_pkts = 0;
365 	wl->links[*hlid].ba_bitmap = 0;
366 	eth_zero_addr(wl->links[*hlid].addr);
367 
368 	/*
369 	 * At this point op_tx() will not add more packets to the queues. We
370 	 * can purge them.
371 	 */
372 	wl1271_tx_reset_link_queues(wl, *hlid);
373 	wl->links[*hlid].wlvif = NULL;
374 
375 	if (wlvif->bss_type == BSS_TYPE_AP_BSS &&
376 	    *hlid == wlvif->ap.bcast_hlid) {
377 		u32 sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING;
378 		/*
379 		 * save the total freed packets in the wlvif, in case this is
380 		 * recovery or suspend
381 		 */
382 		wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts;
383 
384 		/*
385 		 * increment the initial seq number on recovery to account for
386 		 * transmitted packets that we haven't yet got in the FW status
387 		 */
388 		if (wlvif->encryption_type == KEY_GEM)
389 			sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING_GEM;
390 
391 		if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
392 			wlvif->total_freed_pkts += sqn_padding;
393 	}
394 
395 	wl->links[*hlid].total_freed_pkts = 0;
396 
397 	*hlid = WL12XX_INVALID_LINK_ID;
398 	wl->active_link_count--;
399 	WARN_ON_ONCE(wl->active_link_count < 0);
400 }
401 
wlcore_get_native_channel_type(u8 nl_channel_type)402 u8 wlcore_get_native_channel_type(u8 nl_channel_type)
403 {
404 	switch (nl_channel_type) {
405 	case NL80211_CHAN_NO_HT:
406 		return WLCORE_CHAN_NO_HT;
407 	case NL80211_CHAN_HT20:
408 		return WLCORE_CHAN_HT20;
409 	case NL80211_CHAN_HT40MINUS:
410 		return WLCORE_CHAN_HT40MINUS;
411 	case NL80211_CHAN_HT40PLUS:
412 		return WLCORE_CHAN_HT40PLUS;
413 	default:
414 		WARN_ON(1);
415 		return WLCORE_CHAN_NO_HT;
416 	}
417 }
418 EXPORT_SYMBOL_GPL(wlcore_get_native_channel_type);
419 
wl12xx_cmd_role_start_dev(struct wl1271 * wl,struct wl12xx_vif * wlvif,enum nl80211_band band,int channel)420 static int wl12xx_cmd_role_start_dev(struct wl1271 *wl,
421 				     struct wl12xx_vif *wlvif,
422 				     enum nl80211_band band,
423 				     int channel)
424 {
425 	struct wl12xx_cmd_role_start *cmd;
426 	int ret;
427 
428 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
429 	if (!cmd) {
430 		ret = -ENOMEM;
431 		goto out;
432 	}
433 
434 	wl1271_debug(DEBUG_CMD, "cmd role start dev %d", wlvif->dev_role_id);
435 
436 	cmd->role_id = wlvif->dev_role_id;
437 	if (band == NL80211_BAND_5GHZ)
438 		cmd->band = WLCORE_BAND_5GHZ;
439 	cmd->channel = channel;
440 
441 	if (wlvif->dev_hlid == WL12XX_INVALID_LINK_ID) {
442 		ret = wl12xx_allocate_link(wl, wlvif, &wlvif->dev_hlid);
443 		if (ret)
444 			goto out_free;
445 	}
446 	cmd->device.hlid = wlvif->dev_hlid;
447 	cmd->device.session = wl->session_ids[wlvif->dev_hlid];
448 
449 	wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d",
450 		     cmd->role_id, cmd->device.hlid, cmd->device.session);
451 
452 	ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
453 	if (ret < 0) {
454 		wl1271_error("failed to initiate cmd role enable");
455 		goto err_hlid;
456 	}
457 
458 	goto out_free;
459 
460 err_hlid:
461 	/* clear links on error */
462 	wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
463 
464 out_free:
465 	kfree(cmd);
466 
467 out:
468 	return ret;
469 }
470 
wl12xx_cmd_role_stop_dev(struct wl1271 * wl,struct wl12xx_vif * wlvif)471 static int wl12xx_cmd_role_stop_dev(struct wl1271 *wl,
472 				    struct wl12xx_vif *wlvif)
473 {
474 	struct wl12xx_cmd_role_stop *cmd;
475 	int ret;
476 
477 	if (WARN_ON(wlvif->dev_hlid == WL12XX_INVALID_LINK_ID))
478 		return -EINVAL;
479 
480 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
481 	if (!cmd) {
482 		ret = -ENOMEM;
483 		goto out;
484 	}
485 
486 	wl1271_debug(DEBUG_CMD, "cmd role stop dev");
487 
488 	cmd->role_id = wlvif->dev_role_id;
489 	cmd->disc_type = DISCONNECT_IMMEDIATE;
490 	cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
491 
492 	ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
493 	if (ret < 0) {
494 		wl1271_error("failed to initiate cmd role stop");
495 		goto out_free;
496 	}
497 
498 	wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
499 
500 out_free:
501 	kfree(cmd);
502 
503 out:
504 	return ret;
505 }
506 
wl12xx_cmd_role_start_sta(struct wl1271 * wl,struct wl12xx_vif * wlvif)507 int wl12xx_cmd_role_start_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
508 {
509 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
510 	struct wl12xx_cmd_role_start *cmd;
511 	u32 supported_rates;
512 	int ret;
513 
514 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
515 	if (!cmd) {
516 		ret = -ENOMEM;
517 		goto out;
518 	}
519 
520 	wl1271_debug(DEBUG_CMD, "cmd role start sta %d", wlvif->role_id);
521 
522 	cmd->role_id = wlvif->role_id;
523 	if (wlvif->band == NL80211_BAND_5GHZ)
524 		cmd->band = WLCORE_BAND_5GHZ;
525 	cmd->channel = wlvif->channel;
526 	cmd->sta.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
527 	cmd->sta.beacon_interval = cpu_to_le16(wlvif->beacon_int);
528 	cmd->sta.ssid_type = WL12XX_SSID_TYPE_ANY;
529 	cmd->sta.ssid_len = wlvif->ssid_len;
530 	memcpy(cmd->sta.ssid, wlvif->ssid, wlvif->ssid_len);
531 	memcpy(cmd->sta.bssid, vif->bss_conf.bssid, ETH_ALEN);
532 
533 	supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
534 			  wlcore_hw_sta_get_ap_rate_mask(wl, wlvif);
535 	if (wlvif->p2p)
536 		supported_rates &= ~CONF_TX_CCK_RATES;
537 
538 	cmd->sta.local_rates = cpu_to_le32(supported_rates);
539 
540 	cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
541 
542 	if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
543 		ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
544 		if (ret)
545 			goto out_free;
546 	}
547 	cmd->sta.hlid = wlvif->sta.hlid;
548 	cmd->sta.session = wl->session_ids[wlvif->sta.hlid];
549 	/*
550 	 * We don't have the correct remote rates in this stage.  The
551 	 * rates will be reconfigured later, after association, if the
552 	 * firmware supports ACX_PEER_CAP.  Otherwise, there's nothing
553 	 * we can do, so use all supported_rates here.
554 	 */
555 	cmd->sta.remote_rates = cpu_to_le32(supported_rates);
556 
557 	wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
558 		     "basic_rate_set: 0x%x, remote_rates: 0x%x",
559 		     wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
560 		     wlvif->basic_rate_set, wlvif->rate_set);
561 
562 	ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
563 	if (ret < 0) {
564 		wl1271_error("failed to initiate cmd role start sta");
565 		goto err_hlid;
566 	}
567 
568 	wlvif->sta.role_chan_type = wlvif->channel_type;
569 	goto out_free;
570 
571 err_hlid:
572 	/* clear links on error. */
573 	wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
574 
575 out_free:
576 	kfree(cmd);
577 
578 out:
579 	return ret;
580 }
581 
582 /* use this function to stop ibss as well */
wl12xx_cmd_role_stop_sta(struct wl1271 * wl,struct wl12xx_vif * wlvif)583 int wl12xx_cmd_role_stop_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
584 {
585 	struct wl12xx_cmd_role_stop *cmd;
586 	int ret;
587 
588 	if (WARN_ON(wlvif->sta.hlid == WL12XX_INVALID_LINK_ID))
589 		return -EINVAL;
590 
591 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
592 	if (!cmd) {
593 		ret = -ENOMEM;
594 		goto out;
595 	}
596 
597 	wl1271_debug(DEBUG_CMD, "cmd role stop sta %d", wlvif->role_id);
598 
599 	cmd->role_id = wlvif->role_id;
600 	cmd->disc_type = DISCONNECT_IMMEDIATE;
601 	cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
602 
603 	ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
604 	if (ret < 0) {
605 		wl1271_error("failed to initiate cmd role stop sta");
606 		goto out_free;
607 	}
608 
609 	wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
610 
611 out_free:
612 	kfree(cmd);
613 
614 out:
615 	return ret;
616 }
617 
wl12xx_cmd_role_start_ap(struct wl1271 * wl,struct wl12xx_vif * wlvif)618 int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
619 {
620 	struct wl12xx_cmd_role_start *cmd;
621 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
622 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
623 	u32 supported_rates;
624 	int ret;
625 
626 	wl1271_debug(DEBUG_CMD, "cmd role start ap %d", wlvif->role_id);
627 
628 	/* If MESH --> ssid_len is always 0 */
629 	if (!ieee80211_vif_is_mesh(vif)) {
630 		/* trying to use hidden SSID with an old hostapd version */
631 		if (wlvif->ssid_len == 0 && !bss_conf->hidden_ssid) {
632 			wl1271_error("got a null SSID from beacon/bss");
633 			ret = -EINVAL;
634 			goto out;
635 		}
636 	}
637 
638 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
639 	if (!cmd) {
640 		ret = -ENOMEM;
641 		goto out;
642 	}
643 
644 	ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.global_hlid);
645 	if (ret < 0)
646 		goto out_free;
647 
648 	ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.bcast_hlid);
649 	if (ret < 0)
650 		goto out_free_global;
651 
652 	/* use the previous security seq, if this is a recovery/resume */
653 	wl->links[wlvif->ap.bcast_hlid].total_freed_pkts =
654 						wlvif->total_freed_pkts;
655 
656 	cmd->role_id = wlvif->role_id;
657 	cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
658 	cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
659 	cmd->ap.global_hlid = wlvif->ap.global_hlid;
660 	cmd->ap.broadcast_hlid = wlvif->ap.bcast_hlid;
661 	cmd->ap.global_session_id = wl->session_ids[wlvif->ap.global_hlid];
662 	cmd->ap.bcast_session_id = wl->session_ids[wlvif->ap.bcast_hlid];
663 	cmd->ap.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
664 	cmd->ap.beacon_interval = cpu_to_le16(wlvif->beacon_int);
665 	cmd->ap.dtim_interval = bss_conf->dtim_period;
666 	cmd->ap.beacon_expiry = WL1271_AP_DEF_BEACON_EXP;
667 	/* FIXME: Change when adding DFS */
668 	cmd->ap.reset_tsf = 1;  /* By default reset AP TSF */
669 	cmd->ap.wmm = wlvif->wmm_enabled;
670 	cmd->channel = wlvif->channel;
671 	cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
672 
673 	if (!bss_conf->hidden_ssid) {
674 		/* take the SSID from the beacon for backward compatibility */
675 		cmd->ap.ssid_type = WL12XX_SSID_TYPE_PUBLIC;
676 		cmd->ap.ssid_len = wlvif->ssid_len;
677 		memcpy(cmd->ap.ssid, wlvif->ssid, wlvif->ssid_len);
678 	} else {
679 		cmd->ap.ssid_type = WL12XX_SSID_TYPE_HIDDEN;
680 		cmd->ap.ssid_len = bss_conf->ssid_len;
681 		memcpy(cmd->ap.ssid, bss_conf->ssid, bss_conf->ssid_len);
682 	}
683 
684 	supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
685 		wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);
686 	if (wlvif->p2p)
687 		supported_rates &= ~CONF_TX_CCK_RATES;
688 
689 	wl1271_debug(DEBUG_CMD, "cmd role start ap with supported_rates 0x%08x",
690 		     supported_rates);
691 
692 	cmd->ap.local_rates = cpu_to_le32(supported_rates);
693 
694 	switch (wlvif->band) {
695 	case NL80211_BAND_2GHZ:
696 		cmd->band = WLCORE_BAND_2_4GHZ;
697 		break;
698 	case NL80211_BAND_5GHZ:
699 		cmd->band = WLCORE_BAND_5GHZ;
700 		break;
701 	default:
702 		wl1271_warning("ap start - unknown band: %d", (int)wlvif->band);
703 		cmd->band = WLCORE_BAND_2_4GHZ;
704 		break;
705 	}
706 
707 	ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
708 	if (ret < 0) {
709 		wl1271_error("failed to initiate cmd role start ap");
710 		goto out_free_bcast;
711 	}
712 
713 	goto out_free;
714 
715 out_free_bcast:
716 	wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
717 
718 out_free_global:
719 	wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
720 
721 out_free:
722 	kfree(cmd);
723 
724 out:
725 	return ret;
726 }
727 
wl12xx_cmd_role_stop_ap(struct wl1271 * wl,struct wl12xx_vif * wlvif)728 int wl12xx_cmd_role_stop_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
729 {
730 	struct wl12xx_cmd_role_stop *cmd;
731 	int ret;
732 
733 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
734 	if (!cmd) {
735 		ret = -ENOMEM;
736 		goto out;
737 	}
738 
739 	wl1271_debug(DEBUG_CMD, "cmd role stop ap %d", wlvif->role_id);
740 
741 	cmd->role_id = wlvif->role_id;
742 
743 	ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
744 	if (ret < 0) {
745 		wl1271_error("failed to initiate cmd role stop ap");
746 		goto out_free;
747 	}
748 
749 	wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
750 	wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
751 
752 out_free:
753 	kfree(cmd);
754 
755 out:
756 	return ret;
757 }
758 
wl12xx_cmd_role_start_ibss(struct wl1271 * wl,struct wl12xx_vif * wlvif)759 int wl12xx_cmd_role_start_ibss(struct wl1271 *wl, struct wl12xx_vif *wlvif)
760 {
761 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
762 	struct wl12xx_cmd_role_start *cmd;
763 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
764 	int ret;
765 
766 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
767 	if (!cmd) {
768 		ret = -ENOMEM;
769 		goto out;
770 	}
771 
772 	wl1271_debug(DEBUG_CMD, "cmd role start ibss %d", wlvif->role_id);
773 
774 	cmd->role_id = wlvif->role_id;
775 	if (wlvif->band == NL80211_BAND_5GHZ)
776 		cmd->band = WLCORE_BAND_5GHZ;
777 	cmd->channel = wlvif->channel;
778 	cmd->ibss.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
779 	cmd->ibss.beacon_interval = cpu_to_le16(wlvif->beacon_int);
780 	cmd->ibss.dtim_interval = bss_conf->dtim_period;
781 	cmd->ibss.ssid_type = WL12XX_SSID_TYPE_ANY;
782 	cmd->ibss.ssid_len = wlvif->ssid_len;
783 	memcpy(cmd->ibss.ssid, wlvif->ssid, wlvif->ssid_len);
784 	memcpy(cmd->ibss.bssid, vif->bss_conf.bssid, ETH_ALEN);
785 	cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set);
786 
787 	if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
788 		ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
789 		if (ret)
790 			goto out_free;
791 	}
792 	cmd->ibss.hlid = wlvif->sta.hlid;
793 	cmd->ibss.remote_rates = cpu_to_le32(wlvif->rate_set);
794 
795 	wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
796 		     "basic_rate_set: 0x%x, remote_rates: 0x%x",
797 		     wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
798 		     wlvif->basic_rate_set, wlvif->rate_set);
799 
800 	wl1271_debug(DEBUG_CMD, "vif->bss_conf.bssid = %pM",
801 		     vif->bss_conf.bssid);
802 
803 	ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
804 	if (ret < 0) {
805 		wl1271_error("failed to initiate cmd role enable");
806 		goto err_hlid;
807 	}
808 
809 	goto out_free;
810 
811 err_hlid:
812 	/* clear links on error. */
813 	wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
814 
815 out_free:
816 	kfree(cmd);
817 
818 out:
819 	return ret;
820 }
821 
822 
823 /**
824  * send test command to firmware
825  *
826  * @wl: wl struct
827  * @buf: buffer containing the command, with all headers, must work with dma
828  * @buf_len: length of the buffer
829  * @answer: is answer needed
830  */
wl1271_cmd_test(struct wl1271 * wl,void * buf,size_t buf_len,u8 answer)831 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
832 {
833 	int ret;
834 	size_t res_len = 0;
835 
836 	wl1271_debug(DEBUG_CMD, "cmd test");
837 
838 	if (answer)
839 		res_len = buf_len;
840 
841 	ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
842 
843 	if (ret < 0) {
844 		wl1271_warning("TEST command failed");
845 		return ret;
846 	}
847 
848 	return ret;
849 }
850 EXPORT_SYMBOL_GPL(wl1271_cmd_test);
851 
852 /**
853  * read acx from firmware
854  *
855  * @wl: wl struct
856  * @id: acx id
857  * @buf: buffer for the response, including all headers, must work with dma
858  * @cmd_len: length of command
859  * @res_len: length of payload
860  */
wl1271_cmd_interrogate(struct wl1271 * wl,u16 id,void * buf,size_t cmd_len,size_t res_len)861 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf,
862 			   size_t cmd_len, size_t res_len)
863 {
864 	struct acx_header *acx = buf;
865 	int ret;
866 
867 	wl1271_debug(DEBUG_CMD, "cmd interrogate");
868 
869 	acx->id = cpu_to_le16(id);
870 
871 	/* response payload length, does not include any headers */
872 	acx->len = cpu_to_le16(res_len - sizeof(*acx));
873 
874 	ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, cmd_len, res_len);
875 	if (ret < 0)
876 		wl1271_error("INTERROGATE command failed");
877 
878 	return ret;
879 }
880 
881 /**
882  * write acx value to firmware
883  *
884  * @wl: wl struct
885  * @id: acx id
886  * @buf: buffer containing acx, including all headers, must work with dma
887  * @len: length of buf
888  * @valid_rets: bitmap of valid cmd status codes (i.e. return values).
889  * return the cmd status on success.
890  */
wlcore_cmd_configure_failsafe(struct wl1271 * wl,u16 id,void * buf,size_t len,unsigned long valid_rets)891 int wlcore_cmd_configure_failsafe(struct wl1271 *wl, u16 id, void *buf,
892 				  size_t len, unsigned long valid_rets)
893 {
894 	struct acx_header *acx = buf;
895 	int ret;
896 
897 	wl1271_debug(DEBUG_CMD, "cmd configure (%d)", id);
898 
899 	if (WARN_ON_ONCE(len < sizeof(*acx)))
900 		return -EIO;
901 
902 	acx->id = cpu_to_le16(id);
903 
904 	/* payload length, does not include any headers */
905 	acx->len = cpu_to_le16(len - sizeof(*acx));
906 
907 	ret = wlcore_cmd_send_failsafe(wl, CMD_CONFIGURE, acx, len, 0,
908 				       valid_rets);
909 	if (ret < 0) {
910 		wl1271_warning("CONFIGURE command NOK");
911 		return ret;
912 	}
913 
914 	return ret;
915 }
916 
917 /*
918  * wrapper for wlcore_cmd_configure that accepts only success status.
919  * return 0 on success
920  */
wl1271_cmd_configure(struct wl1271 * wl,u16 id,void * buf,size_t len)921 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
922 {
923 	int ret = wlcore_cmd_configure_failsafe(wl, id, buf, len, 0);
924 
925 	if (ret < 0)
926 		return ret;
927 	return 0;
928 }
929 EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
930 
wl1271_cmd_data_path(struct wl1271 * wl,bool enable)931 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
932 {
933 	struct cmd_enabledisable_path *cmd;
934 	int ret;
935 	u16 cmd_rx, cmd_tx;
936 
937 	wl1271_debug(DEBUG_CMD, "cmd data path");
938 
939 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
940 	if (!cmd) {
941 		ret = -ENOMEM;
942 		goto out;
943 	}
944 
945 	/* the channel here is only used for calibration, so hardcoded to 1 */
946 	cmd->channel = 1;
947 
948 	if (enable) {
949 		cmd_rx = CMD_ENABLE_RX;
950 		cmd_tx = CMD_ENABLE_TX;
951 	} else {
952 		cmd_rx = CMD_DISABLE_RX;
953 		cmd_tx = CMD_DISABLE_TX;
954 	}
955 
956 	ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
957 	if (ret < 0) {
958 		wl1271_error("rx %s cmd for channel %d failed",
959 			     enable ? "start" : "stop", cmd->channel);
960 		goto out;
961 	}
962 
963 	wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
964 		     enable ? "start" : "stop", cmd->channel);
965 
966 	ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
967 	if (ret < 0) {
968 		wl1271_error("tx %s cmd for channel %d failed",
969 			     enable ? "start" : "stop", cmd->channel);
970 		goto out;
971 	}
972 
973 	wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
974 		     enable ? "start" : "stop", cmd->channel);
975 
976 out:
977 	kfree(cmd);
978 	return ret;
979 }
980 EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
981 
wl1271_cmd_ps_mode(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 ps_mode,u16 auto_ps_timeout)982 int wl1271_cmd_ps_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
983 		       u8 ps_mode, u16 auto_ps_timeout)
984 {
985 	struct wl1271_cmd_ps_params *ps_params = NULL;
986 	int ret = 0;
987 
988 	wl1271_debug(DEBUG_CMD, "cmd set ps mode");
989 
990 	ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
991 	if (!ps_params) {
992 		ret = -ENOMEM;
993 		goto out;
994 	}
995 
996 	ps_params->role_id = wlvif->role_id;
997 	ps_params->ps_mode = ps_mode;
998 	ps_params->auto_ps_timeout = auto_ps_timeout;
999 
1000 	ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
1001 			      sizeof(*ps_params), 0);
1002 	if (ret < 0) {
1003 		wl1271_error("cmd set_ps_mode failed");
1004 		goto out;
1005 	}
1006 
1007 out:
1008 	kfree(ps_params);
1009 	return ret;
1010 }
1011 
wl1271_cmd_template_set(struct wl1271 * wl,u8 role_id,u16 template_id,void * buf,size_t buf_len,int index,u32 rates)1012 int wl1271_cmd_template_set(struct wl1271 *wl, u8 role_id,
1013 			    u16 template_id, void *buf, size_t buf_len,
1014 			    int index, u32 rates)
1015 {
1016 	struct wl1271_cmd_template_set *cmd;
1017 	int ret = 0;
1018 
1019 	wl1271_debug(DEBUG_CMD, "cmd template_set %d (role %d)",
1020 		     template_id, role_id);
1021 
1022 	WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
1023 	buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
1024 
1025 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1026 	if (!cmd) {
1027 		ret = -ENOMEM;
1028 		goto out;
1029 	}
1030 
1031 	/* during initialization wlvif is NULL */
1032 	cmd->role_id = role_id;
1033 	cmd->len = cpu_to_le16(buf_len);
1034 	cmd->template_type = template_id;
1035 	cmd->enabled_rates = cpu_to_le32(rates);
1036 	cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit;
1037 	cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit;
1038 	cmd->index = index;
1039 
1040 	if (buf)
1041 		memcpy(cmd->template_data, buf, buf_len);
1042 
1043 	ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
1044 	if (ret < 0) {
1045 		wl1271_warning("cmd set_template failed: %d", ret);
1046 		goto out_free;
1047 	}
1048 
1049 out_free:
1050 	kfree(cmd);
1051 
1052 out:
1053 	return ret;
1054 }
1055 
wl12xx_cmd_build_null_data(struct wl1271 * wl,struct wl12xx_vif * wlvif)1056 int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1057 {
1058 	struct sk_buff *skb = NULL;
1059 	int size;
1060 	void *ptr;
1061 	int ret = -ENOMEM;
1062 
1063 
1064 	if (wlvif->bss_type == BSS_TYPE_IBSS) {
1065 		size = sizeof(struct wl12xx_null_data_template);
1066 		ptr = NULL;
1067 	} else {
1068 		skb = ieee80211_nullfunc_get(wl->hw,
1069 					     wl12xx_wlvif_to_vif(wlvif),
1070 					     false);
1071 		if (!skb)
1072 			goto out;
1073 		size = skb->len;
1074 		ptr = skb->data;
1075 	}
1076 
1077 	ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1078 				      CMD_TEMPL_NULL_DATA, ptr, size, 0,
1079 				      wlvif->basic_rate);
1080 
1081 out:
1082 	dev_kfree_skb(skb);
1083 	if (ret)
1084 		wl1271_warning("cmd build null data failed %d", ret);
1085 
1086 	return ret;
1087 
1088 }
1089 
wl12xx_cmd_build_klv_null_data(struct wl1271 * wl,struct wl12xx_vif * wlvif)1090 int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
1091 				   struct wl12xx_vif *wlvif)
1092 {
1093 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1094 	struct sk_buff *skb = NULL;
1095 	int ret = -ENOMEM;
1096 
1097 	skb = ieee80211_nullfunc_get(wl->hw, vif, false);
1098 	if (!skb)
1099 		goto out;
1100 
1101 	ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,
1102 				      skb->data, skb->len,
1103 				      wlvif->sta.klv_template_id,
1104 				      wlvif->basic_rate);
1105 
1106 out:
1107 	dev_kfree_skb(skb);
1108 	if (ret)
1109 		wl1271_warning("cmd build klv null data failed %d", ret);
1110 
1111 	return ret;
1112 
1113 }
1114 
wl1271_cmd_build_ps_poll(struct wl1271 * wl,struct wl12xx_vif * wlvif,u16 aid)1115 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1116 			     u16 aid)
1117 {
1118 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1119 	struct sk_buff *skb;
1120 	int ret = 0;
1121 
1122 	skb = ieee80211_pspoll_get(wl->hw, vif);
1123 	if (!skb)
1124 		goto out;
1125 
1126 	ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1127 				      CMD_TEMPL_PS_POLL, skb->data,
1128 				      skb->len, 0, wlvif->basic_rate_set);
1129 
1130 out:
1131 	dev_kfree_skb(skb);
1132 	return ret;
1133 }
1134 
wl12xx_cmd_build_probe_req(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 role_id,u8 band,const u8 * ssid,size_t ssid_len,const u8 * ie0,size_t ie0_len,const u8 * ie1,size_t ie1_len,bool sched_scan)1135 int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1136 			       u8 role_id, u8 band,
1137 			       const u8 *ssid, size_t ssid_len,
1138 			       const u8 *ie0, size_t ie0_len, const u8 *ie1,
1139 			       size_t ie1_len, bool sched_scan)
1140 {
1141 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1142 	struct sk_buff *skb;
1143 	int ret;
1144 	u32 rate;
1145 	u16 template_id_2_4 = wl->scan_templ_id_2_4;
1146 	u16 template_id_5 = wl->scan_templ_id_5;
1147 
1148 	wl1271_debug(DEBUG_SCAN, "build probe request band %d", band);
1149 
1150 	skb = ieee80211_probereq_get(wl->hw, vif->addr, ssid, ssid_len,
1151 				     ie0_len + ie1_len);
1152 	if (!skb) {
1153 		ret = -ENOMEM;
1154 		goto out;
1155 	}
1156 	if (ie0_len)
1157 		skb_put_data(skb, ie0, ie0_len);
1158 	if (ie1_len)
1159 		skb_put_data(skb, ie1, ie1_len);
1160 
1161 	if (sched_scan &&
1162 	    (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {
1163 		template_id_2_4 = wl->sched_scan_templ_id_2_4;
1164 		template_id_5 = wl->sched_scan_templ_id_5;
1165 	}
1166 
1167 	rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
1168 	if (band == NL80211_BAND_2GHZ)
1169 		ret = wl1271_cmd_template_set(wl, role_id,
1170 					      template_id_2_4,
1171 					      skb->data, skb->len, 0, rate);
1172 	else
1173 		ret = wl1271_cmd_template_set(wl, role_id,
1174 					      template_id_5,
1175 					      skb->data, skb->len, 0, rate);
1176 
1177 out:
1178 	dev_kfree_skb(skb);
1179 	return ret;
1180 }
1181 EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req);
1182 
wl1271_cmd_build_ap_probe_req(struct wl1271 * wl,struct wl12xx_vif * wlvif,struct sk_buff * skb)1183 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
1184 					      struct wl12xx_vif *wlvif,
1185 					      struct sk_buff *skb)
1186 {
1187 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1188 	int ret;
1189 	u32 rate;
1190 
1191 	if (!skb)
1192 		skb = ieee80211_ap_probereq_get(wl->hw, vif);
1193 	if (!skb)
1194 		goto out;
1195 
1196 	wl1271_debug(DEBUG_SCAN, "set ap probe request template");
1197 
1198 	rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);
1199 	if (wlvif->band == NL80211_BAND_2GHZ)
1200 		ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1201 					      CMD_TEMPL_CFG_PROBE_REQ_2_4,
1202 					      skb->data, skb->len, 0, rate);
1203 	else
1204 		ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1205 					      CMD_TEMPL_CFG_PROBE_REQ_5,
1206 					      skb->data, skb->len, 0, rate);
1207 
1208 	if (ret < 0)
1209 		wl1271_error("Unable to set ap probe request template.");
1210 
1211 out:
1212 	return skb;
1213 }
1214 
wl1271_cmd_build_arp_rsp(struct wl1271 * wl,struct wl12xx_vif * wlvif)1215 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1216 {
1217 	int ret, extra = 0;
1218 	u16 fc;
1219 	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1220 	struct sk_buff *skb;
1221 	struct wl12xx_arp_rsp_template *tmpl;
1222 	struct ieee80211_hdr_3addr *hdr;
1223 	struct arphdr *arp_hdr;
1224 
1225 	skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +
1226 			    WL1271_EXTRA_SPACE_MAX);
1227 	if (!skb) {
1228 		wl1271_error("failed to allocate buffer for arp rsp template");
1229 		return -ENOMEM;
1230 	}
1231 
1232 	skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);
1233 
1234 	tmpl = skb_put_zero(skb, sizeof(*tmpl));
1235 
1236 	/* llc layer */
1237 	memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));
1238 	tmpl->llc_type = cpu_to_be16(ETH_P_ARP);
1239 
1240 	/* arp header */
1241 	arp_hdr = &tmpl->arp_hdr;
1242 	arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
1243 	arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
1244 	arp_hdr->ar_hln = ETH_ALEN;
1245 	arp_hdr->ar_pln = 4;
1246 	arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
1247 
1248 	/* arp payload */
1249 	memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);
1250 	tmpl->sender_ip = wlvif->ip_addr;
1251 
1252 	/* encryption space */
1253 	switch (wlvif->encryption_type) {
1254 	case KEY_TKIP:
1255 		if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
1256 			extra = WL1271_EXTRA_SPACE_TKIP;
1257 		break;
1258 	case KEY_AES:
1259 		extra = WL1271_EXTRA_SPACE_AES;
1260 		break;
1261 	case KEY_NONE:
1262 	case KEY_WEP:
1263 	case KEY_GEM:
1264 		extra = 0;
1265 		break;
1266 	default:
1267 		wl1271_warning("Unknown encryption type: %d",
1268 			       wlvif->encryption_type);
1269 		ret = -EINVAL;
1270 		goto out;
1271 	}
1272 
1273 	if (extra) {
1274 		u8 *space = skb_push(skb, extra);
1275 		memset(space, 0, extra);
1276 	}
1277 
1278 	/* QoS header - BE */
1279 	if (wlvif->sta.qos)
1280 		memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));
1281 
1282 	/* mac80211 header */
1283 	hdr = skb_push(skb, sizeof(*hdr));
1284 	memset(hdr, 0, sizeof(*hdr));
1285 	fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;
1286 	if (wlvif->sta.qos)
1287 		fc |= IEEE80211_STYPE_QOS_DATA;
1288 	else
1289 		fc |= IEEE80211_STYPE_DATA;
1290 	if (wlvif->encryption_type != KEY_NONE)
1291 		fc |= IEEE80211_FCTL_PROTECTED;
1292 
1293 	hdr->frame_control = cpu_to_le16(fc);
1294 	memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);
1295 	memcpy(hdr->addr2, vif->addr, ETH_ALEN);
1296 	eth_broadcast_addr(hdr->addr3);
1297 
1298 	ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,
1299 				      skb->data, skb->len, 0,
1300 				      wlvif->basic_rate);
1301 out:
1302 	dev_kfree_skb(skb);
1303 	return ret;
1304 }
1305 
wl1271_build_qos_null_data(struct wl1271 * wl,struct ieee80211_vif * vif)1306 int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1307 {
1308 	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1309 	struct ieee80211_qos_hdr template;
1310 
1311 	memset(&template, 0, sizeof(template));
1312 
1313 	memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN);
1314 	memcpy(template.addr2, vif->addr, ETH_ALEN);
1315 	memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN);
1316 
1317 	template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1318 					     IEEE80211_STYPE_QOS_NULLFUNC |
1319 					     IEEE80211_FCTL_TODS);
1320 
1321 	/* FIXME: not sure what priority to use here */
1322 	template.qos_ctrl = cpu_to_le16(0);
1323 
1324 	return wl1271_cmd_template_set(wl, wlvif->role_id,
1325 				       CMD_TEMPL_QOS_NULL_DATA, &template,
1326 				       sizeof(template), 0,
1327 				       wlvif->basic_rate);
1328 }
1329 
wl12xx_cmd_set_default_wep_key(struct wl1271 * wl,u8 id,u8 hlid)1330 int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid)
1331 {
1332 	struct wl1271_cmd_set_keys *cmd;
1333 	int ret = 0;
1334 
1335 	wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
1336 
1337 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1338 	if (!cmd) {
1339 		ret = -ENOMEM;
1340 		goto out;
1341 	}
1342 
1343 	cmd->hlid = hlid;
1344 	cmd->key_id = id;
1345 	cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1346 	cmd->key_action = cpu_to_le16(KEY_SET_ID);
1347 	cmd->key_type = KEY_WEP;
1348 
1349 	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1350 	if (ret < 0) {
1351 		wl1271_warning("cmd set_default_wep_key failed: %d", ret);
1352 		goto out;
1353 	}
1354 
1355 out:
1356 	kfree(cmd);
1357 
1358 	return ret;
1359 }
1360 
wl1271_cmd_set_sta_key(struct wl1271 * wl,struct wl12xx_vif * wlvif,u16 action,u8 id,u8 key_type,u8 key_size,const u8 * key,const u8 * addr,u32 tx_seq_32,u16 tx_seq_16)1361 int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1362 		       u16 action, u8 id, u8 key_type,
1363 		       u8 key_size, const u8 *key, const u8 *addr,
1364 		       u32 tx_seq_32, u16 tx_seq_16)
1365 {
1366 	struct wl1271_cmd_set_keys *cmd;
1367 	int ret = 0;
1368 
1369 	/* hlid might have already been deleted */
1370 	if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
1371 		return 0;
1372 
1373 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1374 	if (!cmd) {
1375 		ret = -ENOMEM;
1376 		goto out;
1377 	}
1378 
1379 	cmd->hlid = wlvif->sta.hlid;
1380 
1381 	if (key_type == KEY_WEP)
1382 		cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1383 	else if (is_broadcast_ether_addr(addr))
1384 		cmd->lid_key_type = BROADCAST_LID_TYPE;
1385 	else
1386 		cmd->lid_key_type = UNICAST_LID_TYPE;
1387 
1388 	cmd->key_action = cpu_to_le16(action);
1389 	cmd->key_size = key_size;
1390 	cmd->key_type = key_type;
1391 
1392 	cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1393 	cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1394 
1395 	cmd->key_id = id;
1396 
1397 	if (key_type == KEY_TKIP) {
1398 		/*
1399 		 * We get the key in the following form:
1400 		 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1401 		 * but the target is expecting:
1402 		 * TKIP - RX MIC - TX MIC
1403 		 */
1404 		memcpy(cmd->key, key, 16);
1405 		memcpy(cmd->key + 16, key + 24, 8);
1406 		memcpy(cmd->key + 24, key + 16, 8);
1407 
1408 	} else {
1409 		memcpy(cmd->key, key, key_size);
1410 	}
1411 
1412 	wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1413 
1414 	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1415 	if (ret < 0) {
1416 		wl1271_warning("could not set keys");
1417 		goto out;
1418 	}
1419 
1420 out:
1421 	kfree(cmd);
1422 
1423 	return ret;
1424 }
1425 
1426 /*
1427  * TODO: merge with sta/ibss into 1 set_key function.
1428  * note there are slight diffs
1429  */
wl1271_cmd_set_ap_key(struct wl1271 * wl,struct wl12xx_vif * wlvif,u16 action,u8 id,u8 key_type,u8 key_size,const u8 * key,u8 hlid,u32 tx_seq_32,u16 tx_seq_16,bool is_pairwise)1430 int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1431 			  u16 action, u8 id, u8 key_type,
1432 			  u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
1433 			  u16 tx_seq_16, bool is_pairwise)
1434 {
1435 	struct wl1271_cmd_set_keys *cmd;
1436 	int ret = 0;
1437 	u8 lid_type;
1438 
1439 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1440 	if (!cmd)
1441 		return -ENOMEM;
1442 
1443 	if (hlid == wlvif->ap.bcast_hlid) {
1444 		if (key_type == KEY_WEP)
1445 			lid_type = WEP_DEFAULT_LID_TYPE;
1446 		else
1447 			lid_type = BROADCAST_LID_TYPE;
1448 	} else if (is_pairwise) {
1449 		lid_type = UNICAST_LID_TYPE;
1450 	} else {
1451 		lid_type = BROADCAST_LID_TYPE;
1452 	}
1453 
1454 	wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
1455 		     " hlid: %d", (int)action, (int)id, (int)lid_type,
1456 		     (int)key_type, (int)hlid);
1457 
1458 	cmd->lid_key_type = lid_type;
1459 	cmd->hlid = hlid;
1460 	cmd->key_action = cpu_to_le16(action);
1461 	cmd->key_size = key_size;
1462 	cmd->key_type = key_type;
1463 	cmd->key_id = id;
1464 	cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1465 	cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1466 
1467 	if (key_type == KEY_TKIP) {
1468 		/*
1469 		 * We get the key in the following form:
1470 		 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1471 		 * but the target is expecting:
1472 		 * TKIP - RX MIC - TX MIC
1473 		 */
1474 		memcpy(cmd->key, key, 16);
1475 		memcpy(cmd->key + 16, key + 24, 8);
1476 		memcpy(cmd->key + 24, key + 16, 8);
1477 	} else {
1478 		memcpy(cmd->key, key, key_size);
1479 	}
1480 
1481 	wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
1482 
1483 	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1484 	if (ret < 0) {
1485 		wl1271_warning("could not set ap keys");
1486 		goto out;
1487 	}
1488 
1489 out:
1490 	kfree(cmd);
1491 	return ret;
1492 }
1493 
wl12xx_cmd_set_peer_state(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 hlid)1494 int wl12xx_cmd_set_peer_state(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1495 			      u8 hlid)
1496 {
1497 	struct wl12xx_cmd_set_peer_state *cmd;
1498 	int ret = 0;
1499 
1500 	wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid);
1501 
1502 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1503 	if (!cmd) {
1504 		ret = -ENOMEM;
1505 		goto out;
1506 	}
1507 
1508 	cmd->hlid = hlid;
1509 	cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1510 
1511 	/* wmm param is valid only for station role */
1512 	if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1513 		cmd->wmm = wlvif->wmm_enabled;
1514 
1515 	ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0);
1516 	if (ret < 0) {
1517 		wl1271_error("failed to send set peer state command");
1518 		goto out_free;
1519 	}
1520 
1521 out_free:
1522 	kfree(cmd);
1523 
1524 out:
1525 	return ret;
1526 }
1527 
wl12xx_cmd_add_peer(struct wl1271 * wl,struct wl12xx_vif * wlvif,struct ieee80211_sta * sta,u8 hlid)1528 int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1529 			struct ieee80211_sta *sta, u8 hlid)
1530 {
1531 	struct wl12xx_cmd_add_peer *cmd;
1532 	int i, ret;
1533 	u32 sta_rates;
1534 
1535 	wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid);
1536 
1537 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1538 	if (!cmd) {
1539 		ret = -ENOMEM;
1540 		goto out;
1541 	}
1542 
1543 	memcpy(cmd->addr, sta->addr, ETH_ALEN);
1544 	cmd->bss_index = WL1271_AP_BSS_INDEX;
1545 	cmd->aid = sta->aid;
1546 	cmd->hlid = hlid;
1547 	cmd->sp_len = sta->max_sp;
1548 	cmd->wmm = sta->wme ? 1 : 0;
1549 	cmd->session_id = wl->session_ids[hlid];
1550 	cmd->role_id = wlvif->role_id;
1551 
1552 	for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++)
1553 		if (sta->wme && (sta->uapsd_queues & BIT(i)))
1554 			cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1555 					WL1271_PSD_UPSD_TRIGGER;
1556 		else
1557 			cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1558 					WL1271_PSD_LEGACY;
1559 
1560 
1561 	sta_rates = sta->supp_rates[wlvif->band];
1562 	if (sta->ht_cap.ht_supported)
1563 		sta_rates |=
1564 			(sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) |
1565 			(sta->ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET);
1566 
1567 	cmd->supported_rates =
1568 		cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates,
1569 							wlvif->band));
1570 
1571 	if (!cmd->supported_rates) {
1572 		wl1271_debug(DEBUG_CMD,
1573 			     "peer has no supported rates yet, configuring basic rates: 0x%x",
1574 			     wlvif->basic_rate_set);
1575 		cmd->supported_rates = cpu_to_le32(wlvif->basic_rate_set);
1576 	}
1577 
1578 	wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x",
1579 		     cmd->supported_rates, sta->uapsd_queues);
1580 
1581 	ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0);
1582 	if (ret < 0) {
1583 		wl1271_error("failed to initiate cmd add peer");
1584 		goto out_free;
1585 	}
1586 
1587 out_free:
1588 	kfree(cmd);
1589 
1590 out:
1591 	return ret;
1592 }
1593 
wl12xx_cmd_remove_peer(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 hlid)1594 int wl12xx_cmd_remove_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1595 			   u8 hlid)
1596 {
1597 	struct wl12xx_cmd_remove_peer *cmd;
1598 	int ret;
1599 	bool timeout = false;
1600 
1601 	wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid);
1602 
1603 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1604 	if (!cmd) {
1605 		ret = -ENOMEM;
1606 		goto out;
1607 	}
1608 
1609 	cmd->hlid = hlid;
1610 	/* We never send a deauth, mac80211 is in charge of this */
1611 	cmd->reason_opcode = 0;
1612 	cmd->send_deauth_flag = 0;
1613 	cmd->role_id = wlvif->role_id;
1614 
1615 	ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0);
1616 	if (ret < 0) {
1617 		wl1271_error("failed to initiate cmd remove peer");
1618 		goto out_free;
1619 	}
1620 
1621 	ret = wl->ops->wait_for_event(wl,
1622 				      WLCORE_EVENT_PEER_REMOVE_COMPLETE,
1623 				      &timeout);
1624 
1625 	/*
1626 	 * We are ok with a timeout here. The event is sometimes not sent
1627 	 * due to a firmware bug. In case of another error (like SDIO timeout)
1628 	 * queue a recovery.
1629 	 */
1630 	if (ret)
1631 		wl12xx_queue_recovery_work(wl);
1632 
1633 out_free:
1634 	kfree(cmd);
1635 
1636 out:
1637 	return ret;
1638 }
1639 
wlcore_get_reg_conf_ch_idx(enum nl80211_band band,u16 ch)1640 static int wlcore_get_reg_conf_ch_idx(enum nl80211_band band, u16 ch)
1641 {
1642 	/*
1643 	 * map the given band/channel to the respective predefined
1644 	 * bit expected by the fw
1645 	 */
1646 	switch (band) {
1647 	case NL80211_BAND_2GHZ:
1648 		/* channels 1..14 are mapped to 0..13 */
1649 		if (ch >= 1 && ch <= 14)
1650 			return ch - 1;
1651 		break;
1652 	case NL80211_BAND_5GHZ:
1653 		switch (ch) {
1654 		case 8 ... 16:
1655 			/* channels 8,12,16 are mapped to 18,19,20 */
1656 			return 18 + (ch-8)/4;
1657 		case 34 ... 48:
1658 			/* channels 34,36..48 are mapped to 21..28 */
1659 			return 21 + (ch-34)/2;
1660 		case 52 ... 64:
1661 			/* channels 52,56..64 are mapped to 29..32 */
1662 			return 29 + (ch-52)/4;
1663 		case 100 ... 140:
1664 			/* channels 100,104..140 are mapped to 33..43 */
1665 			return 33 + (ch-100)/4;
1666 		case 149 ... 165:
1667 			/* channels 149,153..165 are mapped to 44..48 */
1668 			return 44 + (ch-149)/4;
1669 		default:
1670 			break;
1671 		}
1672 		break;
1673 	default:
1674 		break;
1675 	}
1676 
1677 	wl1271_error("%s: unknown band/channel: %d/%d", __func__, band, ch);
1678 	return -1;
1679 }
1680 
wlcore_set_pending_regdomain_ch(struct wl1271 * wl,u16 channel,enum nl80211_band band)1681 void wlcore_set_pending_regdomain_ch(struct wl1271 *wl, u16 channel,
1682 				     enum nl80211_band band)
1683 {
1684 	int ch_bit_idx = 0;
1685 
1686 	if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1687 		return;
1688 
1689 	ch_bit_idx = wlcore_get_reg_conf_ch_idx(band, channel);
1690 
1691 	if (ch_bit_idx >= 0 && ch_bit_idx <= WL1271_MAX_CHANNELS)
1692 		__set_bit_le(ch_bit_idx, (long *)wl->reg_ch_conf_pending);
1693 }
1694 
wlcore_cmd_regdomain_config_locked(struct wl1271 * wl)1695 int wlcore_cmd_regdomain_config_locked(struct wl1271 *wl)
1696 {
1697 	struct wl12xx_cmd_regdomain_dfs_config *cmd = NULL;
1698 	int ret = 0, i, b, ch_bit_idx;
1699 	__le32 tmp_ch_bitmap[2] __aligned(sizeof(unsigned long));
1700 	struct wiphy *wiphy = wl->hw->wiphy;
1701 	struct ieee80211_supported_band *band;
1702 	bool timeout = false;
1703 
1704 	if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1705 		return 0;
1706 
1707 	wl1271_debug(DEBUG_CMD, "cmd reg domain config");
1708 
1709 	memcpy(tmp_ch_bitmap, wl->reg_ch_conf_pending, sizeof(tmp_ch_bitmap));
1710 
1711 	for (b = NL80211_BAND_2GHZ; b <= NL80211_BAND_5GHZ; b++) {
1712 		band = wiphy->bands[b];
1713 		for (i = 0; i < band->n_channels; i++) {
1714 			struct ieee80211_channel *channel = &band->channels[i];
1715 			u16 ch = channel->hw_value;
1716 			u32 flags = channel->flags;
1717 
1718 			if (flags & (IEEE80211_CHAN_DISABLED |
1719 				     IEEE80211_CHAN_NO_IR))
1720 				continue;
1721 
1722 			if ((flags & IEEE80211_CHAN_RADAR) &&
1723 			    channel->dfs_state != NL80211_DFS_AVAILABLE)
1724 				continue;
1725 
1726 			ch_bit_idx = wlcore_get_reg_conf_ch_idx(b, ch);
1727 			if (ch_bit_idx < 0)
1728 				continue;
1729 
1730 			__set_bit_le(ch_bit_idx, (long *)tmp_ch_bitmap);
1731 		}
1732 	}
1733 
1734 	if (!memcmp(tmp_ch_bitmap, wl->reg_ch_conf_last, sizeof(tmp_ch_bitmap)))
1735 		goto out;
1736 
1737 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1738 	if (!cmd) {
1739 		ret = -ENOMEM;
1740 		goto out;
1741 	}
1742 
1743 	cmd->ch_bit_map1 = tmp_ch_bitmap[0];
1744 	cmd->ch_bit_map2 = tmp_ch_bitmap[1];
1745 	cmd->dfs_region = wl->dfs_region;
1746 
1747 	wl1271_debug(DEBUG_CMD,
1748 		     "cmd reg domain bitmap1: 0x%08x, bitmap2: 0x%08x",
1749 		     cmd->ch_bit_map1, cmd->ch_bit_map2);
1750 
1751 	ret = wl1271_cmd_send(wl, CMD_DFS_CHANNEL_CONFIG, cmd, sizeof(*cmd), 0);
1752 	if (ret < 0) {
1753 		wl1271_error("failed to send reg domain dfs config");
1754 		goto out;
1755 	}
1756 
1757 	ret = wl->ops->wait_for_event(wl,
1758 				      WLCORE_EVENT_DFS_CONFIG_COMPLETE,
1759 				      &timeout);
1760 	if (ret < 0 || timeout) {
1761 		wl1271_error("reg domain conf %serror",
1762 			     timeout ? "completion " : "");
1763 		ret = timeout ? -ETIMEDOUT : ret;
1764 		goto out;
1765 	}
1766 
1767 	memcpy(wl->reg_ch_conf_last, tmp_ch_bitmap, sizeof(tmp_ch_bitmap));
1768 	memset(wl->reg_ch_conf_pending, 0, sizeof(wl->reg_ch_conf_pending));
1769 
1770 out:
1771 	kfree(cmd);
1772 	return ret;
1773 }
1774 
wl12xx_cmd_config_fwlog(struct wl1271 * wl)1775 int wl12xx_cmd_config_fwlog(struct wl1271 *wl)
1776 {
1777 	struct wl12xx_cmd_config_fwlog *cmd;
1778 	int ret = 0;
1779 
1780 	wl1271_debug(DEBUG_CMD, "cmd config firmware logger");
1781 
1782 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1783 	if (!cmd) {
1784 		ret = -ENOMEM;
1785 		goto out;
1786 	}
1787 
1788 	cmd->logger_mode = wl->conf.fwlog.mode;
1789 	cmd->log_severity = wl->conf.fwlog.severity;
1790 	cmd->timestamp = wl->conf.fwlog.timestamp;
1791 	cmd->output = wl->conf.fwlog.output;
1792 	cmd->threshold = wl->conf.fwlog.threshold;
1793 
1794 	ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0);
1795 	if (ret < 0) {
1796 		wl1271_error("failed to send config firmware logger command");
1797 		goto out_free;
1798 	}
1799 
1800 out_free:
1801 	kfree(cmd);
1802 
1803 out:
1804 	return ret;
1805 }
1806 
wl12xx_cmd_start_fwlog(struct wl1271 * wl)1807 int wl12xx_cmd_start_fwlog(struct wl1271 *wl)
1808 {
1809 	struct wl12xx_cmd_start_fwlog *cmd;
1810 	int ret = 0;
1811 
1812 	wl1271_debug(DEBUG_CMD, "cmd start firmware logger");
1813 
1814 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1815 	if (!cmd) {
1816 		ret = -ENOMEM;
1817 		goto out;
1818 	}
1819 
1820 	ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0);
1821 	if (ret < 0) {
1822 		wl1271_error("failed to send start firmware logger command");
1823 		goto out_free;
1824 	}
1825 
1826 out_free:
1827 	kfree(cmd);
1828 
1829 out:
1830 	return ret;
1831 }
1832 
wl12xx_cmd_stop_fwlog(struct wl1271 * wl)1833 int wl12xx_cmd_stop_fwlog(struct wl1271 *wl)
1834 {
1835 	struct wl12xx_cmd_stop_fwlog *cmd;
1836 	int ret = 0;
1837 
1838 	wl1271_debug(DEBUG_CMD, "cmd stop firmware logger");
1839 
1840 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1841 	if (!cmd) {
1842 		ret = -ENOMEM;
1843 		goto out;
1844 	}
1845 
1846 	ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0);
1847 	if (ret < 0) {
1848 		wl1271_error("failed to send stop firmware logger command");
1849 		goto out_free;
1850 	}
1851 
1852 out_free:
1853 	kfree(cmd);
1854 
1855 out:
1856 	return ret;
1857 }
1858 
wl12xx_cmd_roc(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 role_id,enum nl80211_band band,u8 channel)1859 static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1860 			  u8 role_id, enum nl80211_band band, u8 channel)
1861 {
1862 	struct wl12xx_cmd_roc *cmd;
1863 	int ret = 0;
1864 
1865 	wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", channel, role_id);
1866 
1867 	if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID))
1868 		return -EINVAL;
1869 
1870 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1871 	if (!cmd) {
1872 		ret = -ENOMEM;
1873 		goto out;
1874 	}
1875 
1876 	cmd->role_id = role_id;
1877 	cmd->channel = channel;
1878 	switch (band) {
1879 	case NL80211_BAND_2GHZ:
1880 		cmd->band = WLCORE_BAND_2_4GHZ;
1881 		break;
1882 	case NL80211_BAND_5GHZ:
1883 		cmd->band = WLCORE_BAND_5GHZ;
1884 		break;
1885 	default:
1886 		wl1271_error("roc - unknown band: %d", (int)wlvif->band);
1887 		ret = -EINVAL;
1888 		goto out_free;
1889 	}
1890 
1891 
1892 	ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0);
1893 	if (ret < 0) {
1894 		wl1271_error("failed to send ROC command");
1895 		goto out_free;
1896 	}
1897 
1898 out_free:
1899 	kfree(cmd);
1900 
1901 out:
1902 	return ret;
1903 }
1904 
wl12xx_cmd_croc(struct wl1271 * wl,u8 role_id)1905 static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id)
1906 {
1907 	struct wl12xx_cmd_croc *cmd;
1908 	int ret = 0;
1909 
1910 	wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id);
1911 
1912 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1913 	if (!cmd) {
1914 		ret = -ENOMEM;
1915 		goto out;
1916 	}
1917 	cmd->role_id = role_id;
1918 
1919 	ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd,
1920 			      sizeof(*cmd), 0);
1921 	if (ret < 0) {
1922 		wl1271_error("failed to send ROC command");
1923 		goto out_free;
1924 	}
1925 
1926 out_free:
1927 	kfree(cmd);
1928 
1929 out:
1930 	return ret;
1931 }
1932 
wl12xx_roc(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 role_id,enum nl80211_band band,u8 channel)1933 int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id,
1934 	       enum nl80211_band band, u8 channel)
1935 {
1936 	int ret = 0;
1937 
1938 	if (WARN_ON(test_bit(role_id, wl->roc_map)))
1939 		return 0;
1940 
1941 	ret = wl12xx_cmd_roc(wl, wlvif, role_id, band, channel);
1942 	if (ret < 0)
1943 		goto out;
1944 
1945 	__set_bit(role_id, wl->roc_map);
1946 out:
1947 	return ret;
1948 }
1949 
wl12xx_croc(struct wl1271 * wl,u8 role_id)1950 int wl12xx_croc(struct wl1271 *wl, u8 role_id)
1951 {
1952 	int ret = 0;
1953 
1954 	if (WARN_ON(!test_bit(role_id, wl->roc_map)))
1955 		return 0;
1956 
1957 	ret = wl12xx_cmd_croc(wl, role_id);
1958 	if (ret < 0)
1959 		goto out;
1960 
1961 	__clear_bit(role_id, wl->roc_map);
1962 
1963 	/*
1964 	 * Rearm the tx watchdog when removing the last ROC. This prevents
1965 	 * recoveries due to just finished ROCs - when Tx hasn't yet had
1966 	 * a chance to get out.
1967 	 */
1968 	if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES)
1969 		wl12xx_rearm_tx_watchdog_locked(wl);
1970 out:
1971 	return ret;
1972 }
1973 
wl12xx_cmd_stop_channel_switch(struct wl1271 * wl,struct wl12xx_vif * wlvif)1974 int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1975 {
1976 	struct wl12xx_cmd_stop_channel_switch *cmd;
1977 	int ret;
1978 
1979 	wl1271_debug(DEBUG_ACX, "cmd stop channel switch");
1980 
1981 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1982 	if (!cmd) {
1983 		ret = -ENOMEM;
1984 		goto out;
1985 	}
1986 
1987 	cmd->role_id = wlvif->role_id;
1988 
1989 	ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0);
1990 	if (ret < 0) {
1991 		wl1271_error("failed to stop channel switch command");
1992 		goto out_free;
1993 	}
1994 
1995 out_free:
1996 	kfree(cmd);
1997 
1998 out:
1999 	return ret;
2000 }
2001 
2002 /* start dev role and roc on its channel */
wl12xx_start_dev(struct wl1271 * wl,struct wl12xx_vif * wlvif,enum nl80211_band band,int channel)2003 int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2004 		     enum nl80211_band band, int channel)
2005 {
2006 	int ret;
2007 
2008 	if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2009 		      wlvif->bss_type == BSS_TYPE_IBSS)))
2010 		return -EINVAL;
2011 
2012 	/* the dev role is already started for p2p mgmt interfaces */
2013 	if (!wlcore_is_p2p_mgmt(wlvif)) {
2014 		ret = wl12xx_cmd_role_enable(wl,
2015 					     wl12xx_wlvif_to_vif(wlvif)->addr,
2016 					     WL1271_ROLE_DEVICE,
2017 					     &wlvif->dev_role_id);
2018 		if (ret < 0)
2019 			goto out;
2020 	}
2021 
2022 	ret = wl12xx_cmd_role_start_dev(wl, wlvif, band, channel);
2023 	if (ret < 0)
2024 		goto out_disable;
2025 
2026 	ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id, band, channel);
2027 	if (ret < 0)
2028 		goto out_stop;
2029 
2030 	return 0;
2031 
2032 out_stop:
2033 	wl12xx_cmd_role_stop_dev(wl, wlvif);
2034 out_disable:
2035 	if (!wlcore_is_p2p_mgmt(wlvif))
2036 		wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2037 out:
2038 	return ret;
2039 }
2040 
2041 /* croc dev hlid, and stop the role */
wl12xx_stop_dev(struct wl1271 * wl,struct wl12xx_vif * wlvif)2042 int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2043 {
2044 	int ret;
2045 
2046 	if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2047 		      wlvif->bss_type == BSS_TYPE_IBSS)))
2048 		return -EINVAL;
2049 
2050 	/* flush all pending packets */
2051 	ret = wlcore_tx_work_locked(wl);
2052 	if (ret < 0)
2053 		goto out;
2054 
2055 	if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
2056 		ret = wl12xx_croc(wl, wlvif->dev_role_id);
2057 		if (ret < 0)
2058 			goto out;
2059 	}
2060 
2061 	ret = wl12xx_cmd_role_stop_dev(wl, wlvif);
2062 	if (ret < 0)
2063 		goto out;
2064 
2065 	if (!wlcore_is_p2p_mgmt(wlvif)) {
2066 		ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2067 		if (ret < 0)
2068 			goto out;
2069 	}
2070 
2071 out:
2072 	return ret;
2073 }
2074 
wlcore_cmd_generic_cfg(struct wl1271 * wl,struct wl12xx_vif * wlvif,u8 feature,u8 enable,u8 value)2075 int wlcore_cmd_generic_cfg(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2076 			   u8 feature, u8 enable, u8 value)
2077 {
2078 	struct wlcore_cmd_generic_cfg *cmd;
2079 	int ret;
2080 
2081 	wl1271_debug(DEBUG_CMD,
2082 		     "cmd generic cfg (role %d feature %d enable %d value %d)",
2083 		     wlvif->role_id, feature, enable, value);
2084 
2085 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2086 	if (!cmd)
2087 		return -ENOMEM;
2088 
2089 	cmd->role_id = wlvif->role_id;
2090 	cmd->feature = feature;
2091 	cmd->enable = enable;
2092 	cmd->value = value;
2093 
2094 	ret = wl1271_cmd_send(wl, CMD_GENERIC_CFG, cmd, sizeof(*cmd), 0);
2095 	if (ret < 0) {
2096 		wl1271_error("failed to send generic cfg command");
2097 		goto out_free;
2098 	}
2099 out_free:
2100 	kfree(cmd);
2101 	return ret;
2102 }
2103 EXPORT_SYMBOL_GPL(wlcore_cmd_generic_cfg);
2104