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(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); 163 164 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); 175 176 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 } 209 210 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); 216 217 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); 223 224 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); 231 232 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); 271 272 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 } 283 284 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