1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * This file is part of wl1271 4 * 5 * Copyright (C) 2008-2009 Nokia Corporation 6 * 7 * Contact: Luciano Coelho <luciano.coelho@nokia.com> 8 */ 9 10 #include "wlcore.h" 11 #include "debug.h" 12 #include "io.h" 13 #include "event.h" 14 #include "ps.h" 15 #include "scan.h" 16 #include "wl12xx_80211.h" 17 #include "hw_ops.h" 18 19 #define WL18XX_LOGGER_SDIO_BUFF_MAX (0x1020) 20 #define WL18XX_DATA_RAM_BASE_ADDRESS (0x20000000) 21 #define WL18XX_LOGGER_SDIO_BUFF_ADDR (0x40159c) 22 #define WL18XX_LOGGER_BUFF_OFFSET (sizeof(struct fw_logger_information)) 23 #define WL18XX_LOGGER_READ_POINT_OFFSET (12) 24 25 int wlcore_event_fw_logger(struct wl1271 *wl) 26 { 27 int ret; 28 struct fw_logger_information fw_log; 29 u8 *buffer; 30 u32 internal_fw_addrbase = WL18XX_DATA_RAM_BASE_ADDRESS; 31 u32 addr = WL18XX_LOGGER_SDIO_BUFF_ADDR; 32 u32 addr_ptr; 33 u32 buff_start_ptr; 34 u32 buff_read_ptr; 35 u32 buff_end_ptr; 36 u32 available_len; 37 u32 actual_len; 38 u32 clear_ptr; 39 size_t len; 40 u32 start_loc; 41 42 buffer = kzalloc(WL18XX_LOGGER_SDIO_BUFF_MAX, GFP_KERNEL); 43 if (!buffer) { 44 wl1271_error("Fail to allocate fw logger memory"); 45 actual_len = 0; 46 goto out; 47 } 48 49 ret = wlcore_read(wl, addr, buffer, WL18XX_LOGGER_SDIO_BUFF_MAX, 50 false); 51 if (ret < 0) { 52 wl1271_error("Fail to read logger buffer, error_id = %d", 53 ret); 54 actual_len = 0; 55 goto free_out; 56 } 57 58 memcpy(&fw_log, buffer, sizeof(fw_log)); 59 60 actual_len = le32_to_cpu(fw_log.actual_buff_size); 61 if (actual_len == 0) 62 goto free_out; 63 64 /* Calculate the internal pointer to the fwlog structure */ 65 addr_ptr = internal_fw_addrbase + addr; 66 67 /* Calculate the internal pointers to the start and end of log buffer */ 68 buff_start_ptr = addr_ptr + WL18XX_LOGGER_BUFF_OFFSET; 69 buff_end_ptr = buff_start_ptr + le32_to_cpu(fw_log.max_buff_size); 70 71 /* Read the read pointer and validate it */ 72 buff_read_ptr = le32_to_cpu(fw_log.buff_read_ptr); 73 if (buff_read_ptr < buff_start_ptr || 74 buff_read_ptr >= buff_end_ptr) { 75 wl1271_error("buffer read pointer out of bounds: %x not in (%x-%x)\n", 76 buff_read_ptr, buff_start_ptr, buff_end_ptr); 77 goto free_out; 78 } 79 80 start_loc = buff_read_ptr - addr_ptr; 81 available_len = buff_end_ptr - buff_read_ptr; 82 83 /* Copy initial part up to the end of ring buffer */ 84 len = min(actual_len, available_len); 85 wl12xx_copy_fwlog(wl, &buffer[start_loc], len); 86 clear_ptr = addr_ptr + start_loc + actual_len; 87 if (clear_ptr == buff_end_ptr) 88 clear_ptr = buff_start_ptr; 89 90 /* Copy any remaining part from beginning of ring buffer */ 91 len = actual_len - len; 92 if (len) { 93 wl12xx_copy_fwlog(wl, 94 &buffer[WL18XX_LOGGER_BUFF_OFFSET], 95 len); 96 clear_ptr = addr_ptr + WL18XX_LOGGER_BUFF_OFFSET + len; 97 } 98 99 /* Update the read pointer */ 100 ret = wlcore_write32(wl, addr + WL18XX_LOGGER_READ_POINT_OFFSET, 101 clear_ptr); 102 free_out: 103 kfree(buffer); 104 out: 105 return actual_len; 106 } 107 EXPORT_SYMBOL_GPL(wlcore_event_fw_logger); 108 109 void wlcore_event_rssi_trigger(struct wl1271 *wl, s8 *metric_arr) 110 { 111 struct wl12xx_vif *wlvif; 112 struct ieee80211_vif *vif; 113 enum nl80211_cqm_rssi_threshold_event event; 114 s8 metric = metric_arr[0]; 115 116 wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric); 117 118 /* TODO: check actual multi-role support */ 119 wl12xx_for_each_wlvif_sta(wl, wlvif) { 120 if (metric <= wlvif->rssi_thold) 121 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 122 else 123 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 124 125 vif = wl12xx_wlvif_to_vif(wlvif); 126 if (event != wlvif->last_rssi_event) 127 ieee80211_cqm_rssi_notify(vif, event, metric, 128 GFP_KERNEL); 129 wlvif->last_rssi_event = event; 130 } 131 } 132 EXPORT_SYMBOL_GPL(wlcore_event_rssi_trigger); 133 134 static void wl1271_stop_ba_event(struct wl1271 *wl, struct wl12xx_vif *wlvif) 135 { 136 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 137 138 if (wlvif->bss_type != BSS_TYPE_AP_BSS) { 139 u8 hlid = wlvif->sta.hlid; 140 if (!wl->links[hlid].ba_bitmap) 141 return; 142 ieee80211_stop_rx_ba_session(vif, wl->links[hlid].ba_bitmap, 143 vif->bss_conf.bssid); 144 } else { 145 u8 hlid; 146 struct wl1271_link *lnk; 147 for_each_set_bit(hlid, wlvif->ap.sta_hlid_map, 148 wl->num_links) { 149 lnk = &wl->links[hlid]; 150 if (!lnk->ba_bitmap) 151 continue; 152 153 ieee80211_stop_rx_ba_session(vif, 154 lnk->ba_bitmap, 155 lnk->addr); 156 } 157 } 158 } 159 160 void wlcore_event_soft_gemini_sense(struct wl1271 *wl, u8 enable) 161 { 162 struct wl12xx_vif *wlvif; 163 164 if (enable) { 165 set_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags); 166 } else { 167 clear_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags); 168 wl12xx_for_each_wlvif_sta(wl, wlvif) { 169 wl1271_recalc_rx_streaming(wl, wlvif); 170 } 171 } 172 } 173 EXPORT_SYMBOL_GPL(wlcore_event_soft_gemini_sense); 174 175 void wlcore_event_sched_scan_completed(struct wl1271 *wl, 176 u8 status) 177 { 178 wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_COMPLETE_EVENT (status 0x%0x)", 179 status); 180 181 if (wl->sched_vif) { 182 ieee80211_sched_scan_stopped(wl->hw); 183 wl->sched_vif = NULL; 184 } 185 } 186 EXPORT_SYMBOL_GPL(wlcore_event_sched_scan_completed); 187 188 void wlcore_event_ba_rx_constraint(struct wl1271 *wl, 189 unsigned long roles_bitmap, 190 unsigned long allowed_bitmap) 191 { 192 struct wl12xx_vif *wlvif; 193 194 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx allowed=0x%lx", 195 __func__, roles_bitmap, allowed_bitmap); 196 197 wl12xx_for_each_wlvif(wl, wlvif) { 198 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID || 199 !test_bit(wlvif->role_id , &roles_bitmap)) 200 continue; 201 202 wlvif->ba_allowed = !!test_bit(wlvif->role_id, 203 &allowed_bitmap); 204 if (!wlvif->ba_allowed) 205 wl1271_stop_ba_event(wl, wlvif); 206 } 207 } 208 EXPORT_SYMBOL_GPL(wlcore_event_ba_rx_constraint); 209 210 void wlcore_event_channel_switch(struct wl1271 *wl, 211 unsigned long roles_bitmap, 212 bool success) 213 { 214 struct wl12xx_vif *wlvif; 215 struct ieee80211_vif *vif; 216 217 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx success=%d", 218 __func__, roles_bitmap, success); 219 220 wl12xx_for_each_wlvif(wl, wlvif) { 221 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID || 222 !test_bit(wlvif->role_id , &roles_bitmap)) 223 continue; 224 225 if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, 226 &wlvif->flags)) 227 continue; 228 229 vif = wl12xx_wlvif_to_vif(wlvif); 230 231 if (wlvif->bss_type == BSS_TYPE_STA_BSS) { 232 ieee80211_chswitch_done(vif, success); 233 cancel_delayed_work(&wlvif->channel_switch_work); 234 } else { 235 set_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags); 236 ieee80211_csa_finish(vif); 237 } 238 } 239 } 240 EXPORT_SYMBOL_GPL(wlcore_event_channel_switch); 241 242 void wlcore_event_dummy_packet(struct wl1271 *wl) 243 { 244 if (wl->plt) { 245 wl1271_info("Got DUMMY_PACKET event in PLT mode. FW bug, ignoring."); 246 return; 247 } 248 249 wl1271_debug(DEBUG_EVENT, "DUMMY_PACKET_ID_EVENT_ID"); 250 wl1271_tx_dummy_packet(wl); 251 } 252 EXPORT_SYMBOL_GPL(wlcore_event_dummy_packet); 253 254 static void wlcore_disconnect_sta(struct wl1271 *wl, unsigned long sta_bitmap) 255 { 256 u32 num_packets = wl->conf.tx.max_tx_retries; 257 struct wl12xx_vif *wlvif; 258 struct ieee80211_vif *vif; 259 struct ieee80211_sta *sta; 260 const u8 *addr; 261 int h; 262 263 for_each_set_bit(h, &sta_bitmap, wl->num_links) { 264 bool found = false; 265 /* find the ap vif connected to this sta */ 266 wl12xx_for_each_wlvif_ap(wl, wlvif) { 267 if (!test_bit(h, wlvif->ap.sta_hlid_map)) 268 continue; 269 found = true; 270 break; 271 } 272 if (!found) 273 continue; 274 275 vif = wl12xx_wlvif_to_vif(wlvif); 276 addr = wl->links[h].addr; 277 278 rcu_read_lock(); 279 sta = ieee80211_find_sta(vif, addr); 280 if (sta) { 281 wl1271_debug(DEBUG_EVENT, "remove sta %d", h); 282 ieee80211_report_low_ack(sta, num_packets); 283 } 284 rcu_read_unlock(); 285 } 286 } 287 288 void wlcore_event_max_tx_failure(struct wl1271 *wl, unsigned long sta_bitmap) 289 { 290 wl1271_debug(DEBUG_EVENT, "MAX_TX_FAILURE_EVENT_ID"); 291 wlcore_disconnect_sta(wl, sta_bitmap); 292 } 293 EXPORT_SYMBOL_GPL(wlcore_event_max_tx_failure); 294 295 void wlcore_event_inactive_sta(struct wl1271 *wl, unsigned long sta_bitmap) 296 { 297 wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID"); 298 wlcore_disconnect_sta(wl, sta_bitmap); 299 } 300 EXPORT_SYMBOL_GPL(wlcore_event_inactive_sta); 301 302 void wlcore_event_roc_complete(struct wl1271 *wl) 303 { 304 wl1271_debug(DEBUG_EVENT, "REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID"); 305 if (wl->roc_vif) 306 ieee80211_ready_on_channel(wl->hw); 307 } 308 EXPORT_SYMBOL_GPL(wlcore_event_roc_complete); 309 310 void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap) 311 { 312 /* 313 * We are HW_MONITOR device. On beacon loss - queue 314 * connection loss work. Cancel it on REGAINED event. 315 */ 316 struct wl12xx_vif *wlvif; 317 struct ieee80211_vif *vif; 318 int delay = wl->conf.conn.synch_fail_thold * 319 wl->conf.conn.bss_lose_timeout; 320 321 wl1271_info("Beacon loss detected. roles:0x%lx", roles_bitmap); 322 323 wl12xx_for_each_wlvif_sta(wl, wlvif) { 324 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID || 325 !test_bit(wlvif->role_id , &roles_bitmap)) 326 continue; 327 328 vif = wl12xx_wlvif_to_vif(wlvif); 329 330 /* don't attempt roaming in case of p2p */ 331 if (wlvif->p2p) { 332 ieee80211_connection_loss(vif); 333 continue; 334 } 335 336 /* 337 * if the work is already queued, it should take place. 338 * We don't want to delay the connection loss 339 * indication any more. 340 */ 341 ieee80211_queue_delayed_work(wl->hw, 342 &wlvif->connection_loss_work, 343 msecs_to_jiffies(delay)); 344 345 ieee80211_cqm_beacon_loss_notify(vif, GFP_KERNEL); 346 } 347 } 348 EXPORT_SYMBOL_GPL(wlcore_event_beacon_loss); 349 350 int wl1271_event_unmask(struct wl1271 *wl) 351 { 352 int ret; 353 354 wl1271_debug(DEBUG_EVENT, "unmasking event_mask 0x%x", wl->event_mask); 355 ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask)); 356 if (ret < 0) 357 return ret; 358 359 return 0; 360 } 361 362 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num) 363 { 364 int ret; 365 366 wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num); 367 368 if (mbox_num > 1) 369 return -EINVAL; 370 371 /* first we read the mbox descriptor */ 372 ret = wlcore_read(wl, wl->mbox_ptr[mbox_num], wl->mbox, 373 wl->mbox_size, false); 374 if (ret < 0) 375 return ret; 376 377 /* process the descriptor */ 378 ret = wl->ops->process_mailbox_events(wl); 379 if (ret < 0) 380 return ret; 381 382 /* 383 * TODO: we just need this because one bit is in a different 384 * place. Is there any better way? 385 */ 386 ret = wl->ops->ack_event(wl); 387 388 return ret; 389 } 390