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 #include "hw_ops.h" 32 33 #define WL18XX_LOGGER_SDIO_BUFF_MAX (0x1020) 34 #define WL18XX_DATA_RAM_BASE_ADDRESS (0x20000000) 35 #define WL18XX_LOGGER_SDIO_BUFF_ADDR (0x40159c) 36 #define WL18XX_LOGGER_BUFF_OFFSET (sizeof(struct fw_logger_information)) 37 #define WL18XX_LOGGER_READ_POINT_OFFSET (12) 38 39 int wlcore_event_fw_logger(struct wl1271 *wl) 40 { 41 int ret; 42 struct fw_logger_information fw_log; 43 u8 *buffer; 44 u32 internal_fw_addrbase = WL18XX_DATA_RAM_BASE_ADDRESS; 45 u32 addr = WL18XX_LOGGER_SDIO_BUFF_ADDR; 46 u32 end_buff_addr = WL18XX_LOGGER_SDIO_BUFF_ADDR + 47 WL18XX_LOGGER_BUFF_OFFSET; 48 u32 available_len; 49 u32 actual_len; 50 u32 clear_addr; 51 size_t len; 52 u32 start_loc; 53 54 buffer = kzalloc(WL18XX_LOGGER_SDIO_BUFF_MAX, GFP_KERNEL); 55 if (!buffer) { 56 wl1271_error("Fail to allocate fw logger memory"); 57 fw_log.actual_buff_size = cpu_to_le32(0); 58 goto out; 59 } 60 61 ret = wlcore_read(wl, addr, buffer, WL18XX_LOGGER_SDIO_BUFF_MAX, 62 false); 63 if (ret < 0) { 64 wl1271_error("Fail to read logger buffer, error_id = %d", 65 ret); 66 fw_log.actual_buff_size = cpu_to_le32(0); 67 goto free_out; 68 } 69 70 memcpy(&fw_log, buffer, sizeof(fw_log)); 71 72 if (le32_to_cpu(fw_log.actual_buff_size) == 0) 73 goto free_out; 74 75 actual_len = le32_to_cpu(fw_log.actual_buff_size); 76 start_loc = (le32_to_cpu(fw_log.buff_read_ptr) - 77 internal_fw_addrbase) - addr; 78 end_buff_addr += le32_to_cpu(fw_log.max_buff_size); 79 available_len = end_buff_addr - 80 (le32_to_cpu(fw_log.buff_read_ptr) - 81 internal_fw_addrbase); 82 actual_len = min(actual_len, available_len); 83 len = actual_len; 84 85 wl12xx_copy_fwlog(wl, &buffer[start_loc], len); 86 clear_addr = addr + start_loc + le32_to_cpu(fw_log.actual_buff_size) + 87 internal_fw_addrbase; 88 89 len = le32_to_cpu(fw_log.actual_buff_size) - len; 90 if (len) { 91 wl12xx_copy_fwlog(wl, 92 &buffer[WL18XX_LOGGER_BUFF_OFFSET], 93 len); 94 clear_addr = addr + WL18XX_LOGGER_BUFF_OFFSET + len + 95 internal_fw_addrbase; 96 } 97 98 /* double check that clear address and write pointer are the same */ 99 if (clear_addr != le32_to_cpu(fw_log.buff_write_ptr)) { 100 wl1271_error("Calculate of clear addr Clear = %x, write = %x", 101 clear_addr, le32_to_cpu(fw_log.buff_write_ptr)); 102 } 103 104 /* indicate FW about Clear buffer */ 105 ret = wlcore_write32(wl, addr + WL18XX_LOGGER_READ_POINT_OFFSET, 106 fw_log.buff_write_ptr); 107 free_out: 108 kfree(buffer); 109 out: 110 return le32_to_cpu(fw_log.actual_buff_size); 111 } 112 EXPORT_SYMBOL_GPL(wlcore_event_fw_logger); 113 114 void wlcore_event_rssi_trigger(struct wl1271 *wl, s8 *metric_arr) 115 { 116 struct wl12xx_vif *wlvif; 117 struct ieee80211_vif *vif; 118 enum nl80211_cqm_rssi_threshold_event event; 119 s8 metric = metric_arr[0]; 120 121 wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric); 122 123 /* TODO: check actual multi-role support */ 124 wl12xx_for_each_wlvif_sta(wl, wlvif) { 125 if (metric <= wlvif->rssi_thold) 126 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 127 else 128 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 129 130 vif = wl12xx_wlvif_to_vif(wlvif); 131 if (event != wlvif->last_rssi_event) 132 ieee80211_cqm_rssi_notify(vif, event, GFP_KERNEL); 133 wlvif->last_rssi_event = event; 134 } 135 } 136 EXPORT_SYMBOL_GPL(wlcore_event_rssi_trigger); 137 138 static void wl1271_stop_ba_event(struct wl1271 *wl, struct wl12xx_vif *wlvif) 139 { 140 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 141 142 if (wlvif->bss_type != BSS_TYPE_AP_BSS) { 143 u8 hlid = wlvif->sta.hlid; 144 if (!wl->links[hlid].ba_bitmap) 145 return; 146 ieee80211_stop_rx_ba_session(vif, wl->links[hlid].ba_bitmap, 147 vif->bss_conf.bssid); 148 } else { 149 u8 hlid; 150 struct wl1271_link *lnk; 151 for_each_set_bit(hlid, wlvif->ap.sta_hlid_map, 152 wl->num_links) { 153 lnk = &wl->links[hlid]; 154 if (!lnk->ba_bitmap) 155 continue; 156 157 ieee80211_stop_rx_ba_session(vif, 158 lnk->ba_bitmap, 159 lnk->addr); 160 } 161 } 162 } 163 164 void wlcore_event_soft_gemini_sense(struct wl1271 *wl, u8 enable) 165 { 166 struct wl12xx_vif *wlvif; 167 168 if (enable) { 169 set_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags); 170 } else { 171 clear_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags); 172 wl12xx_for_each_wlvif_sta(wl, wlvif) { 173 wl1271_recalc_rx_streaming(wl, wlvif); 174 } 175 } 176 } 177 EXPORT_SYMBOL_GPL(wlcore_event_soft_gemini_sense); 178 179 void wlcore_event_sched_scan_completed(struct wl1271 *wl, 180 u8 status) 181 { 182 wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_COMPLETE_EVENT (status 0x%0x)", 183 status); 184 185 if (wl->sched_vif) { 186 ieee80211_sched_scan_stopped(wl->hw); 187 wl->sched_vif = NULL; 188 } 189 } 190 EXPORT_SYMBOL_GPL(wlcore_event_sched_scan_completed); 191 192 void wlcore_event_ba_rx_constraint(struct wl1271 *wl, 193 unsigned long roles_bitmap, 194 unsigned long allowed_bitmap) 195 { 196 struct wl12xx_vif *wlvif; 197 198 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx allowed=0x%lx", 199 __func__, roles_bitmap, allowed_bitmap); 200 201 wl12xx_for_each_wlvif(wl, wlvif) { 202 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID || 203 !test_bit(wlvif->role_id , &roles_bitmap)) 204 continue; 205 206 wlvif->ba_allowed = !!test_bit(wlvif->role_id, 207 &allowed_bitmap); 208 if (!wlvif->ba_allowed) 209 wl1271_stop_ba_event(wl, wlvif); 210 } 211 } 212 EXPORT_SYMBOL_GPL(wlcore_event_ba_rx_constraint); 213 214 void wlcore_event_channel_switch(struct wl1271 *wl, 215 unsigned long roles_bitmap, 216 bool success) 217 { 218 struct wl12xx_vif *wlvif; 219 struct ieee80211_vif *vif; 220 221 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx success=%d", 222 __func__, roles_bitmap, success); 223 224 wl12xx_for_each_wlvif(wl, wlvif) { 225 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID || 226 !test_bit(wlvif->role_id , &roles_bitmap)) 227 continue; 228 229 if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, 230 &wlvif->flags)) 231 continue; 232 233 vif = wl12xx_wlvif_to_vif(wlvif); 234 235 if (wlvif->bss_type == BSS_TYPE_STA_BSS) { 236 ieee80211_chswitch_done(vif, success); 237 cancel_delayed_work(&wlvif->channel_switch_work); 238 } else { 239 set_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags); 240 ieee80211_csa_finish(vif); 241 } 242 } 243 } 244 EXPORT_SYMBOL_GPL(wlcore_event_channel_switch); 245 246 void wlcore_event_dummy_packet(struct wl1271 *wl) 247 { 248 if (wl->plt) { 249 wl1271_info("Got DUMMY_PACKET event in PLT mode. FW bug, ignoring."); 250 return; 251 } 252 253 wl1271_debug(DEBUG_EVENT, "DUMMY_PACKET_ID_EVENT_ID"); 254 wl1271_tx_dummy_packet(wl); 255 } 256 EXPORT_SYMBOL_GPL(wlcore_event_dummy_packet); 257 258 static void wlcore_disconnect_sta(struct wl1271 *wl, unsigned long sta_bitmap) 259 { 260 u32 num_packets = wl->conf.tx.max_tx_retries; 261 struct wl12xx_vif *wlvif; 262 struct ieee80211_vif *vif; 263 struct ieee80211_sta *sta; 264 const u8 *addr; 265 int h; 266 267 for_each_set_bit(h, &sta_bitmap, wl->num_links) { 268 bool found = false; 269 /* find the ap vif connected to this sta */ 270 wl12xx_for_each_wlvif_ap(wl, wlvif) { 271 if (!test_bit(h, wlvif->ap.sta_hlid_map)) 272 continue; 273 found = true; 274 break; 275 } 276 if (!found) 277 continue; 278 279 vif = wl12xx_wlvif_to_vif(wlvif); 280 addr = wl->links[h].addr; 281 282 rcu_read_lock(); 283 sta = ieee80211_find_sta(vif, addr); 284 if (sta) { 285 wl1271_debug(DEBUG_EVENT, "remove sta %d", h); 286 ieee80211_report_low_ack(sta, num_packets); 287 } 288 rcu_read_unlock(); 289 } 290 } 291 292 void wlcore_event_max_tx_failure(struct wl1271 *wl, unsigned long sta_bitmap) 293 { 294 wl1271_debug(DEBUG_EVENT, "MAX_TX_FAILURE_EVENT_ID"); 295 wlcore_disconnect_sta(wl, sta_bitmap); 296 } 297 EXPORT_SYMBOL_GPL(wlcore_event_max_tx_failure); 298 299 void wlcore_event_inactive_sta(struct wl1271 *wl, unsigned long sta_bitmap) 300 { 301 wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID"); 302 wlcore_disconnect_sta(wl, sta_bitmap); 303 } 304 EXPORT_SYMBOL_GPL(wlcore_event_inactive_sta); 305 306 void wlcore_event_roc_complete(struct wl1271 *wl) 307 { 308 wl1271_debug(DEBUG_EVENT, "REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID"); 309 if (wl->roc_vif) 310 ieee80211_ready_on_channel(wl->hw); 311 } 312 EXPORT_SYMBOL_GPL(wlcore_event_roc_complete); 313 314 void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap) 315 { 316 /* 317 * We are HW_MONITOR device. On beacon loss - queue 318 * connection loss work. Cancel it on REGAINED event. 319 */ 320 struct wl12xx_vif *wlvif; 321 struct ieee80211_vif *vif; 322 int delay = wl->conf.conn.synch_fail_thold * 323 wl->conf.conn.bss_lose_timeout; 324 325 wl1271_info("Beacon loss detected. roles:0x%lx", roles_bitmap); 326 327 wl12xx_for_each_wlvif_sta(wl, wlvif) { 328 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID || 329 !test_bit(wlvif->role_id , &roles_bitmap)) 330 continue; 331 332 vif = wl12xx_wlvif_to_vif(wlvif); 333 334 /* don't attempt roaming in case of p2p */ 335 if (wlvif->p2p) { 336 ieee80211_connection_loss(vif); 337 continue; 338 } 339 340 /* 341 * if the work is already queued, it should take place. 342 * We don't want to delay the connection loss 343 * indication any more. 344 */ 345 ieee80211_queue_delayed_work(wl->hw, 346 &wlvif->connection_loss_work, 347 msecs_to_jiffies(delay)); 348 349 ieee80211_cqm_beacon_loss_notify(vif, GFP_KERNEL); 350 } 351 } 352 EXPORT_SYMBOL_GPL(wlcore_event_beacon_loss); 353 354 int wl1271_event_unmask(struct wl1271 *wl) 355 { 356 int ret; 357 358 wl1271_debug(DEBUG_EVENT, "unmasking event_mask 0x%x", wl->event_mask); 359 ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask)); 360 if (ret < 0) 361 return ret; 362 363 return 0; 364 } 365 366 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num) 367 { 368 int ret; 369 370 wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num); 371 372 if (mbox_num > 1) 373 return -EINVAL; 374 375 /* first we read the mbox descriptor */ 376 ret = wlcore_read(wl, wl->mbox_ptr[mbox_num], wl->mbox, 377 wl->mbox_size, false); 378 if (ret < 0) 379 return ret; 380 381 /* process the descriptor */ 382 ret = wl->ops->process_mailbox_events(wl); 383 if (ret < 0) 384 return ret; 385 386 /* 387 * TODO: we just need this because one bit is in a different 388 * place. Is there any better way? 389 */ 390 ret = wl->ops->ack_event(wl); 391 392 return ret; 393 } 394