2 * This file is part of wl1271
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
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.
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.
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
30 #include "wl12xx_80211.h"
32 static void wl1271_event_rssi_trigger(struct wl1271
*wl
,
33 struct wl12xx_vif
*wlvif
,
34 struct event_mailbox
*mbox
)
36 struct ieee80211_vif
*vif
= wl12xx_wlvif_to_vif(wlvif
);
37 enum nl80211_cqm_rssi_threshold_event event
;
38 s8 metric
= mbox
->rssi_snr_trigger_metric
[0];
40 wl1271_debug(DEBUG_EVENT
, "RSSI trigger metric: %d", metric
);
42 if (metric
<= wlvif
->rssi_thold
)
43 event
= NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW
;
45 event
= NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH
;
47 if (event
!= wlvif
->last_rssi_event
)
48 ieee80211_cqm_rssi_notify(vif
, event
, GFP_KERNEL
);
49 wlvif
->last_rssi_event
= event
;
52 static void wl1271_stop_ba_event(struct wl1271
*wl
, struct wl12xx_vif
*wlvif
)
54 struct ieee80211_vif
*vif
= wl12xx_wlvif_to_vif(wlvif
);
56 if (wlvif
->bss_type
!= BSS_TYPE_AP_BSS
) {
57 if (!wlvif
->sta
.ba_rx_bitmap
)
59 ieee80211_stop_rx_ba_session(vif
, wlvif
->sta
.ba_rx_bitmap
,
63 struct wl1271_link
*lnk
;
64 for_each_set_bit(hlid
, wlvif
->ap
.sta_hlid_map
,
66 lnk
= &wl
->links
[hlid
];
70 ieee80211_stop_rx_ba_session(vif
,
77 static void wl12xx_event_soft_gemini_sense(struct wl1271
*wl
,
80 struct wl12xx_vif
*wlvif
;
83 set_bit(WL1271_FLAG_SOFT_GEMINI
, &wl
->flags
);
85 clear_bit(WL1271_FLAG_SOFT_GEMINI
, &wl
->flags
);
86 wl12xx_for_each_wlvif_sta(wl
, wlvif
) {
87 wl1271_recalc_rx_streaming(wl
, wlvif
);
93 static void wl1271_event_mbox_dump(struct event_mailbox
*mbox
)
95 wl1271_debug(DEBUG_EVENT
, "MBOX DUMP:");
96 wl1271_debug(DEBUG_EVENT
, "\tvector: 0x%x", mbox
->events_vector
);
97 wl1271_debug(DEBUG_EVENT
, "\tmask: 0x%x", mbox
->events_mask
);
100 static int wl1271_event_process(struct wl1271
*wl
)
102 struct event_mailbox
*mbox
= wl
->mbox
;
103 struct ieee80211_vif
*vif
;
104 struct wl12xx_vif
*wlvif
;
106 bool disconnect_sta
= false;
107 unsigned long sta_bitmap
= 0;
109 wl1271_event_mbox_dump(mbox
);
111 vector
= le32_to_cpu(mbox
->events_vector
);
112 vector
&= ~(le32_to_cpu(mbox
->events_mask
));
113 wl1271_debug(DEBUG_EVENT
, "vector: 0x%x", vector
);
115 if (vector
& SCAN_COMPLETE_EVENT_ID
) {
116 wl1271_debug(DEBUG_EVENT
, "status: 0x%x",
117 mbox
->scheduled_scan_status
);
119 wl1271_scan_stm(wl
, wl
->scan_vif
);
122 if (vector
& PERIODIC_SCAN_REPORT_EVENT_ID
) {
123 wl1271_debug(DEBUG_EVENT
, "PERIODIC_SCAN_REPORT_EVENT "
124 "(status 0x%0x)", mbox
->scheduled_scan_status
);
126 wl1271_scan_sched_scan_results(wl
);
129 if (vector
& PERIODIC_SCAN_COMPLETE_EVENT_ID
) {
130 wl1271_debug(DEBUG_EVENT
, "PERIODIC_SCAN_COMPLETE_EVENT "
131 "(status 0x%0x)", mbox
->scheduled_scan_status
);
132 if (wl
->sched_scanning
) {
133 ieee80211_sched_scan_stopped(wl
->hw
);
134 wl
->sched_scanning
= false;
138 if (vector
& SOFT_GEMINI_SENSE_EVENT_ID
)
139 wl12xx_event_soft_gemini_sense(wl
,
140 mbox
->soft_gemini_sense_info
);
143 * We are HW_MONITOR device. On beacon loss - queue
144 * connection loss work. Cancel it on REGAINED event.
146 if (vector
& BSS_LOSE_EVENT_ID
) {
147 /* TODO: check for multi-role */
148 int delay
= wl
->conf
.conn
.synch_fail_thold
*
149 wl
->conf
.conn
.bss_lose_timeout
;
150 wl1271_info("Beacon loss detected.");
153 * if the work is already queued, it should take place. We
154 * don't want to delay the connection loss indication
157 ieee80211_queue_delayed_work(wl
->hw
, &wl
->connection_loss_work
,
158 msecs_to_jiffies(delay
));
160 wl12xx_for_each_wlvif_sta(wl
, wlvif
) {
161 vif
= wl12xx_wlvif_to_vif(wlvif
);
163 ieee80211_cqm_rssi_notify(
165 NL80211_CQM_RSSI_BEACON_LOSS_EVENT
,
170 if (vector
& REGAINED_BSS_EVENT_ID
) {
171 /* TODO: check for multi-role */
172 wl1271_info("Beacon regained.");
173 cancel_delayed_work(&wl
->connection_loss_work
);
175 /* sanity check - we can't lose and gain the beacon together */
176 WARN(vector
& BSS_LOSE_EVENT_ID
,
177 "Concurrent beacon loss and gain from FW");
180 if (vector
& RSSI_SNR_TRIGGER_0_EVENT_ID
) {
181 /* TODO: check actual multi-role support */
182 wl1271_debug(DEBUG_EVENT
, "RSSI_SNR_TRIGGER_0_EVENT");
183 wl12xx_for_each_wlvif_sta(wl
, wlvif
) {
184 wl1271_event_rssi_trigger(wl
, wlvif
, mbox
);
188 if (vector
& BA_SESSION_RX_CONSTRAINT_EVENT_ID
) {
189 u8 role_id
= mbox
->role_id
;
190 wl1271_debug(DEBUG_EVENT
, "BA_SESSION_RX_CONSTRAINT_EVENT_ID. "
191 "ba_allowed = 0x%x, role_id=%d",
192 mbox
->rx_ba_allowed
, role_id
);
194 wl12xx_for_each_wlvif(wl
, wlvif
) {
195 if (role_id
!= 0xff && role_id
!= wlvif
->role_id
)
198 wlvif
->ba_allowed
= !!mbox
->rx_ba_allowed
;
199 if (!wlvif
->ba_allowed
)
200 wl1271_stop_ba_event(wl
, wlvif
);
204 if (vector
& CHANNEL_SWITCH_COMPLETE_EVENT_ID
) {
205 wl1271_debug(DEBUG_EVENT
, "CHANNEL_SWITCH_COMPLETE_EVENT_ID. "
207 mbox
->channel_switch_status
);
209 * That event uses for two cases:
210 * 1) channel switch complete with status=0
211 * 2) channel switch failed status=1
214 /* TODO: configure only the relevant vif */
215 wl12xx_for_each_wlvif_sta(wl
, wlvif
) {
218 if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS
,
222 success
= mbox
->channel_switch_status
? false : true;
223 vif
= wl12xx_wlvif_to_vif(wlvif
);
225 ieee80211_chswitch_done(vif
, success
);
229 if ((vector
& DUMMY_PACKET_EVENT_ID
)) {
230 wl1271_debug(DEBUG_EVENT
, "DUMMY_PACKET_ID_EVENT_ID");
231 wl1271_tx_dummy_packet(wl
);
235 * "TX retries exceeded" has a different meaning according to mode.
236 * In AP mode the offending station is disconnected.
238 if (vector
& MAX_TX_RETRY_EVENT_ID
) {
239 wl1271_debug(DEBUG_EVENT
, "MAX_TX_RETRY_EVENT_ID");
240 sta_bitmap
|= le16_to_cpu(mbox
->sta_tx_retry_exceeded
);
241 disconnect_sta
= true;
244 if (vector
& INACTIVE_STA_EVENT_ID
) {
245 wl1271_debug(DEBUG_EVENT
, "INACTIVE_STA_EVENT_ID");
246 sta_bitmap
|= le16_to_cpu(mbox
->sta_aging_status
);
247 disconnect_sta
= true;
250 if (disconnect_sta
) {
251 u32 num_packets
= wl
->conf
.tx
.max_tx_retries
;
252 struct ieee80211_sta
*sta
;
256 for_each_set_bit(h
, &sta_bitmap
, WL12XX_MAX_LINKS
) {
258 /* find the ap vif connected to this sta */
259 wl12xx_for_each_wlvif_ap(wl
, wlvif
) {
260 if (!test_bit(h
, wlvif
->ap
.sta_hlid_map
))
268 vif
= wl12xx_wlvif_to_vif(wlvif
);
269 addr
= wl
->links
[h
].addr
;
272 sta
= ieee80211_find_sta(vif
, addr
);
274 wl1271_debug(DEBUG_EVENT
, "remove sta %d", h
);
275 ieee80211_report_low_ack(sta
, num_packets
);
283 int wl1271_event_unmask(struct wl1271
*wl
)
287 ret
= wl1271_acx_event_mbox_mask(wl
, ~(wl
->event_mask
));
294 int wl1271_event_handle(struct wl1271
*wl
, u8 mbox_num
)
298 wl1271_debug(DEBUG_EVENT
, "EVENT on mbox %d", mbox_num
);
303 /* first we read the mbox descriptor */
304 ret
= wlcore_read(wl
, wl
->mbox_ptr
[mbox_num
], wl
->mbox
,
305 sizeof(*wl
->mbox
), false);
309 /* process the descriptor */
310 ret
= wl1271_event_process(wl
);
315 * TODO: we just need this because one bit is in a different
316 * place. Is there any better way?
318 wl
->ops
->ack_event(wl
);