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 <[email protected]>
   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 + 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, 0);
 233                         cancel_delayed_work(&wlvif->channel_switch_work);
 234                 } else {
 235                         set_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags);
 236                         ieee80211_csa_finish(vif, 0);
 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 }