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 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 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 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 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); 109 110 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); 131 132 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_sta(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 ieee80211_chswitch_done(vif, success); 154 cancel_delayed_work(&wlvif->channel_switch_work); 155 } 156 } 157 EXPORT_SYMBOL_GPL(wlcore_event_channel_switch); 158 159 void wlcore_event_dummy_packet(struct wl1271 *wl) 160 { 161 if (wl->plt) { 162 wl1271_info("Got DUMMY_PACKET event in PLT mode. FW bug, ignoring."); 163 return; 164 } 165 166 wl1271_debug(DEBUG_EVENT, "DUMMY_PACKET_ID_EVENT_ID"); 167 wl1271_tx_dummy_packet(wl); 168 } 169 EXPORT_SYMBOL_GPL(wlcore_event_dummy_packet); 170 171 static void wlcore_disconnect_sta(struct wl1271 *wl, unsigned long sta_bitmap) 172 { 173 u32 num_packets = wl->conf.tx.max_tx_retries; 174 struct wl12xx_vif *wlvif; 175 struct ieee80211_vif *vif; 176 struct ieee80211_sta *sta; 177 const u8 *addr; 178 int h; 179 180 for_each_set_bit(h, &sta_bitmap, wl->num_links) { 181 bool found = false; 182 /* find the ap vif connected to this sta */ 183 wl12xx_for_each_wlvif_ap(wl, wlvif) { 184 if (!test_bit(h, wlvif->ap.sta_hlid_map)) 185 continue; 186 found = true; 187 break; 188 } 189 if (!found) 190 continue; 191 192 vif = wl12xx_wlvif_to_vif(wlvif); 193 addr = wl->links[h].addr; 194 195 rcu_read_lock(); 196 sta = ieee80211_find_sta(vif, addr); 197 if (sta) { 198 wl1271_debug(DEBUG_EVENT, "remove sta %d", h); 199 ieee80211_report_low_ack(sta, num_packets); 200 } 201 rcu_read_unlock(); 202 } 203 } 204 205 void wlcore_event_max_tx_failure(struct wl1271 *wl, unsigned long sta_bitmap) 206 { 207 wl1271_debug(DEBUG_EVENT, "MAX_TX_FAILURE_EVENT_ID"); 208 wlcore_disconnect_sta(wl, sta_bitmap); 209 } 210 EXPORT_SYMBOL_GPL(wlcore_event_max_tx_failure); 211 212 void wlcore_event_inactive_sta(struct wl1271 *wl, unsigned long sta_bitmap) 213 { 214 wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID"); 215 wlcore_disconnect_sta(wl, sta_bitmap); 216 } 217 EXPORT_SYMBOL_GPL(wlcore_event_inactive_sta); 218 219 void wlcore_event_roc_complete(struct wl1271 *wl) 220 { 221 wl1271_debug(DEBUG_EVENT, "REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID"); 222 if (wl->roc_vif) 223 ieee80211_ready_on_channel(wl->hw); 224 } 225 EXPORT_SYMBOL_GPL(wlcore_event_roc_complete); 226 227 void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap) 228 { 229 /* 230 * We are HW_MONITOR device. On beacon loss - queue 231 * connection loss work. Cancel it on REGAINED event. 232 */ 233 struct wl12xx_vif *wlvif; 234 struct ieee80211_vif *vif; 235 int delay = wl->conf.conn.synch_fail_thold * 236 wl->conf.conn.bss_lose_timeout; 237 238 wl1271_info("Beacon loss detected. roles:0x%lx", roles_bitmap); 239 240 wl12xx_for_each_wlvif_sta(wl, wlvif) { 241 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID || 242 !test_bit(wlvif->role_id , &roles_bitmap)) 243 continue; 244 245 vif = wl12xx_wlvif_to_vif(wlvif); 246 247 /* don't attempt roaming in case of p2p */ 248 if (wlvif->p2p) { 249 ieee80211_connection_loss(vif); 250 continue; 251 } 252 253 /* 254 * if the work is already queued, it should take place. 255 * We don't want to delay the connection loss 256 * indication any more. 257 */ 258 ieee80211_queue_delayed_work(wl->hw, 259 &wlvif->connection_loss_work, 260 msecs_to_jiffies(delay)); 261 262 ieee80211_cqm_beacon_loss_notify(vif, GFP_KERNEL); 263 } 264 } 265 EXPORT_SYMBOL_GPL(wlcore_event_beacon_loss); 266 267 int wl1271_event_unmask(struct wl1271 *wl) 268 { 269 int ret; 270 271 wl1271_debug(DEBUG_EVENT, "unmasking event_mask 0x%x", wl->event_mask); 272 ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask)); 273 if (ret < 0) 274 return ret; 275 276 return 0; 277 } 278 279 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num) 280 { 281 int ret; 282 283 wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num); 284 285 if (mbox_num > 1) 286 return -EINVAL; 287 288 /* first we read the mbox descriptor */ 289 ret = wlcore_read(wl, wl->mbox_ptr[mbox_num], wl->mbox, 290 wl->mbox_size, false); 291 if (ret < 0) 292 return ret; 293 294 /* process the descriptor */ 295 ret = wl->ops->process_mailbox_events(wl); 296 if (ret < 0) 297 return ret; 298 299 /* 300 * TODO: we just need this because one bit is in a different 301 * place. Is there any better way? 302 */ 303 ret = wl->ops->ack_event(wl); 304 305 return ret; 306 } 307