drivers/net/wireless/ti/wlcore/event.c

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