1 /*
2 * This file is part of wl1271
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24 #include "wlcore.h"
25 #include "debug.h"
26 #include "io.h"
27 #include "event.h"
28 #include "ps.h"
29 #include "scan.h"
30 #include "wl12xx_80211.h"
31
wlcore_event_rssi_trigger(struct wl1271 * wl,s8 * metric_arr)32 void wlcore_event_rssi_trigger(struct wl1271 *wl, s8 *metric_arr)
33 {
34 struct wl12xx_vif *wlvif;
35 struct ieee80211_vif *vif;
36 enum nl80211_cqm_rssi_threshold_event event;
37 s8 metric = metric_arr[0];
38
39 wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric);
40
41 /* TODO: check actual multi-role support */
42 wl12xx_for_each_wlvif_sta(wl, wlvif) {
43 if (metric <= wlvif->rssi_thold)
44 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
45 else
46 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
47
48 vif = wl12xx_wlvif_to_vif(wlvif);
49 if (event != wlvif->last_rssi_event)
50 ieee80211_cqm_rssi_notify(vif, event, GFP_KERNEL);
51 wlvif->last_rssi_event = event;
52 }
53 }
54 EXPORT_SYMBOL_GPL(wlcore_event_rssi_trigger);
55
wl1271_stop_ba_event(struct wl1271 * wl,struct wl12xx_vif * wlvif)56 static void wl1271_stop_ba_event(struct wl1271 *wl, struct wl12xx_vif *wlvif)
57 {
58 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
59
60 if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
61 u8 hlid = wlvif->sta.hlid;
62 if (!wl->links[hlid].ba_bitmap)
63 return;
64 ieee80211_stop_rx_ba_session(vif, wl->links[hlid].ba_bitmap,
65 vif->bss_conf.bssid);
66 } else {
67 u8 hlid;
68 struct wl1271_link *lnk;
69 for_each_set_bit(hlid, wlvif->ap.sta_hlid_map,
70 wl->num_links) {
71 lnk = &wl->links[hlid];
72 if (!lnk->ba_bitmap)
73 continue;
74
75 ieee80211_stop_rx_ba_session(vif,
76 lnk->ba_bitmap,
77 lnk->addr);
78 }
79 }
80 }
81
wlcore_event_soft_gemini_sense(struct wl1271 * wl,u8 enable)82 void wlcore_event_soft_gemini_sense(struct wl1271 *wl, u8 enable)
83 {
84 struct wl12xx_vif *wlvif;
85
86 if (enable) {
87 set_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags);
88 } else {
89 clear_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags);
90 wl12xx_for_each_wlvif_sta(wl, wlvif) {
91 wl1271_recalc_rx_streaming(wl, wlvif);
92 }
93 }
94 }
95 EXPORT_SYMBOL_GPL(wlcore_event_soft_gemini_sense);
96
wlcore_event_sched_scan_completed(struct wl1271 * wl,u8 status)97 void wlcore_event_sched_scan_completed(struct wl1271 *wl,
98 u8 status)
99 {
100 wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_COMPLETE_EVENT (status 0x%0x)",
101 status);
102
103 if (wl->sched_vif) {
104 ieee80211_sched_scan_stopped(wl->hw);
105 wl->sched_vif = NULL;
106 }
107 }
108 EXPORT_SYMBOL_GPL(wlcore_event_sched_scan_completed);
109
wlcore_event_ba_rx_constraint(struct wl1271 * wl,unsigned long roles_bitmap,unsigned long allowed_bitmap)110 void wlcore_event_ba_rx_constraint(struct wl1271 *wl,
111 unsigned long roles_bitmap,
112 unsigned long allowed_bitmap)
113 {
114 struct wl12xx_vif *wlvif;
115
116 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx allowed=0x%lx",
117 __func__, roles_bitmap, allowed_bitmap);
118
119 wl12xx_for_each_wlvif(wl, wlvif) {
120 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
121 !test_bit(wlvif->role_id , &roles_bitmap))
122 continue;
123
124 wlvif->ba_allowed = !!test_bit(wlvif->role_id,
125 &allowed_bitmap);
126 if (!wlvif->ba_allowed)
127 wl1271_stop_ba_event(wl, wlvif);
128 }
129 }
130 EXPORT_SYMBOL_GPL(wlcore_event_ba_rx_constraint);
131
wlcore_event_channel_switch(struct wl1271 * wl,unsigned long roles_bitmap,bool success)132 void wlcore_event_channel_switch(struct wl1271 *wl,
133 unsigned long roles_bitmap,
134 bool success)
135 {
136 struct wl12xx_vif *wlvif;
137 struct ieee80211_vif *vif;
138
139 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx success=%d",
140 __func__, roles_bitmap, success);
141
142 wl12xx_for_each_wlvif(wl, wlvif) {
143 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
144 !test_bit(wlvif->role_id , &roles_bitmap))
145 continue;
146
147 if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS,
148 &wlvif->flags))
149 continue;
150
151 vif = wl12xx_wlvif_to_vif(wlvif);
152
153 if (wlvif->bss_type == BSS_TYPE_STA_BSS) {
154 ieee80211_chswitch_done(vif, success);
155 cancel_delayed_work(&wlvif->channel_switch_work);
156 } else {
157 set_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags);
158 ieee80211_csa_finish(vif);
159 }
160 }
161 }
162 EXPORT_SYMBOL_GPL(wlcore_event_channel_switch);
163
wlcore_event_dummy_packet(struct wl1271 * wl)164 void wlcore_event_dummy_packet(struct wl1271 *wl)
165 {
166 if (wl->plt) {
167 wl1271_info("Got DUMMY_PACKET event in PLT mode. FW bug, ignoring.");
168 return;
169 }
170
171 wl1271_debug(DEBUG_EVENT, "DUMMY_PACKET_ID_EVENT_ID");
172 wl1271_tx_dummy_packet(wl);
173 }
174 EXPORT_SYMBOL_GPL(wlcore_event_dummy_packet);
175
wlcore_disconnect_sta(struct wl1271 * wl,unsigned long sta_bitmap)176 static void wlcore_disconnect_sta(struct wl1271 *wl, unsigned long sta_bitmap)
177 {
178 u32 num_packets = wl->conf.tx.max_tx_retries;
179 struct wl12xx_vif *wlvif;
180 struct ieee80211_vif *vif;
181 struct ieee80211_sta *sta;
182 const u8 *addr;
183 int h;
184
185 for_each_set_bit(h, &sta_bitmap, wl->num_links) {
186 bool found = false;
187 /* find the ap vif connected to this sta */
188 wl12xx_for_each_wlvif_ap(wl, wlvif) {
189 if (!test_bit(h, wlvif->ap.sta_hlid_map))
190 continue;
191 found = true;
192 break;
193 }
194 if (!found)
195 continue;
196
197 vif = wl12xx_wlvif_to_vif(wlvif);
198 addr = wl->links[h].addr;
199
200 rcu_read_lock();
201 sta = ieee80211_find_sta(vif, addr);
202 if (sta) {
203 wl1271_debug(DEBUG_EVENT, "remove sta %d", h);
204 ieee80211_report_low_ack(sta, num_packets);
205 }
206 rcu_read_unlock();
207 }
208 }
209
wlcore_event_max_tx_failure(struct wl1271 * wl,unsigned long sta_bitmap)210 void wlcore_event_max_tx_failure(struct wl1271 *wl, unsigned long sta_bitmap)
211 {
212 wl1271_debug(DEBUG_EVENT, "MAX_TX_FAILURE_EVENT_ID");
213 wlcore_disconnect_sta(wl, sta_bitmap);
214 }
215 EXPORT_SYMBOL_GPL(wlcore_event_max_tx_failure);
216
wlcore_event_inactive_sta(struct wl1271 * wl,unsigned long sta_bitmap)217 void wlcore_event_inactive_sta(struct wl1271 *wl, unsigned long sta_bitmap)
218 {
219 wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID");
220 wlcore_disconnect_sta(wl, sta_bitmap);
221 }
222 EXPORT_SYMBOL_GPL(wlcore_event_inactive_sta);
223
wlcore_event_roc_complete(struct wl1271 * wl)224 void wlcore_event_roc_complete(struct wl1271 *wl)
225 {
226 wl1271_debug(DEBUG_EVENT, "REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID");
227 if (wl->roc_vif)
228 ieee80211_ready_on_channel(wl->hw);
229 }
230 EXPORT_SYMBOL_GPL(wlcore_event_roc_complete);
231
wlcore_event_beacon_loss(struct wl1271 * wl,unsigned long roles_bitmap)232 void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap)
233 {
234 /*
235 * We are HW_MONITOR device. On beacon loss - queue
236 * connection loss work. Cancel it on REGAINED event.
237 */
238 struct wl12xx_vif *wlvif;
239 struct ieee80211_vif *vif;
240 int delay = wl->conf.conn.synch_fail_thold *
241 wl->conf.conn.bss_lose_timeout;
242
243 wl1271_info("Beacon loss detected. roles:0x%lx", roles_bitmap);
244
245 wl12xx_for_each_wlvif_sta(wl, wlvif) {
246 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
247 !test_bit(wlvif->role_id , &roles_bitmap))
248 continue;
249
250 vif = wl12xx_wlvif_to_vif(wlvif);
251
252 /* don't attempt roaming in case of p2p */
253 if (wlvif->p2p) {
254 ieee80211_connection_loss(vif);
255 continue;
256 }
257
258 /*
259 * if the work is already queued, it should take place.
260 * We don't want to delay the connection loss
261 * indication any more.
262 */
263 ieee80211_queue_delayed_work(wl->hw,
264 &wlvif->connection_loss_work,
265 msecs_to_jiffies(delay));
266
267 ieee80211_cqm_beacon_loss_notify(vif, GFP_KERNEL);
268 }
269 }
270 EXPORT_SYMBOL_GPL(wlcore_event_beacon_loss);
271
wl1271_event_unmask(struct wl1271 * wl)272 int wl1271_event_unmask(struct wl1271 *wl)
273 {
274 int ret;
275
276 wl1271_debug(DEBUG_EVENT, "unmasking event_mask 0x%x", wl->event_mask);
277 ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
278 if (ret < 0)
279 return ret;
280
281 return 0;
282 }
283
wl1271_event_handle(struct wl1271 * wl,u8 mbox_num)284 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
285 {
286 int ret;
287
288 wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
289
290 if (mbox_num > 1)
291 return -EINVAL;
292
293 /* first we read the mbox descriptor */
294 ret = wlcore_read(wl, wl->mbox_ptr[mbox_num], wl->mbox,
295 wl->mbox_size, false);
296 if (ret < 0)
297 return ret;
298
299 /* process the descriptor */
300 ret = wl->ops->process_mailbox_events(wl);
301 if (ret < 0)
302 return ret;
303
304 /*
305 * TODO: we just need this because one bit is in a different
306 * place. Is there any better way?
307 */
308 ret = wl->ops->ack_event(wl);
309
310 return ret;
311 }
312