drivers/net/wireless/ti/wl18xx/event.c

   1 /*
   2  * This file is part of wl12xx
   3  *
   4  * Copyright (C) 2012 Texas Instruments. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <net/genetlink.h>
  23 #include "event.h"
  24 #include "scan.h"
  25 #include "../wlcore/cmd.h"
  26 #include "../wlcore/debug.h"
  27 #include "../wlcore/vendor_cmd.h"
  28
  29 int wl18xx_wait_for_event(struct wl1271 *wl, enum wlcore_wait_event event,
  30                           bool *timeout)
  31 {
  32         u32 local_event;
  33
  34         switch (event) {
  35         case WLCORE_EVENT_PEER_REMOVE_COMPLETE:
  36                 local_event = PEER_REMOVE_COMPLETE_EVENT_ID;
  37                 break;
  38
  39         case WLCORE_EVENT_DFS_CONFIG_COMPLETE:
  40                 local_event = DFS_CHANNELS_CONFIG_COMPLETE_EVENT;
  41                 break;
  42
  43         default:
  44                 /* event not implemented */
  45                 return 0;
  46         }
  47         return wlcore_cmd_wait_for_event_or_timeout(wl, local_event, timeout);
  48 }
  49
  50 static const char *wl18xx_radar_type_decode(u8 radar_type)
  51 {
  52         switch (radar_type) {
  53         case RADAR_TYPE_REGULAR:
  54                 return "REGULAR";
  55         case RADAR_TYPE_CHIRP:
  56                 return "CHIRP";
  57         case RADAR_TYPE_NONE:
  58         default:
  59                 return "N/A";
  60         }
  61 }
  62
  63 static int wlcore_smart_config_sync_event(struct wl1271 *wl, u8 sync_channel,
  64                                           u8 sync_band)
  65 {
  66         struct sk_buff *skb;
  67         enum nl80211_band band;
  68         int freq;
  69
  70         if (sync_band == WLCORE_BAND_5GHZ)
  71                 band = NL80211_BAND_5GHZ;
  72         else
  73                 band = NL80211_BAND_2GHZ;
  74
  75         freq = ieee80211_channel_to_frequency(sync_channel, band);
  76
  77         wl1271_debug(DEBUG_EVENT,
  78                      "SMART_CONFIG_SYNC_EVENT_ID, freq: %d (chan: %d band %d)",
  79                      freq, sync_channel, sync_band);
  80         skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL, 20,
  81                                           WLCORE_VENDOR_EVENT_SC_SYNC,
  82                                           GFP_KERNEL);
  83
  84         if (nla_put_u32(skb, WLCORE_VENDOR_ATTR_FREQ, freq)) {
  85                 kfree_skb(skb);
  86                 return -EMSGSIZE;
  87         }
  88         cfg80211_vendor_event(skb, GFP_KERNEL);
  89         return 0;
  90 }
  91
  92 static int wlcore_smart_config_decode_event(struct wl1271 *wl,
  93                                             u8 ssid_len, u8 *ssid,
  94                                             u8 pwd_len, u8 *pwd)
  95 {
  96         struct sk_buff *skb;
  97
  98         wl1271_debug(DEBUG_EVENT, "SMART_CONFIG_DECODE_EVENT_ID");
  99         wl1271_dump_ascii(DEBUG_EVENT, "SSID:", ssid, ssid_len);
 100
 101         skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL,
 102                                           ssid_len + pwd_len + 20,
 103                                           WLCORE_VENDOR_EVENT_SC_DECODE,
 104                                           GFP_KERNEL);
 105
 106         if (nla_put(skb, WLCORE_VENDOR_ATTR_SSID, ssid_len, ssid) ||
 107             nla_put(skb, WLCORE_VENDOR_ATTR_PSK, pwd_len, pwd)) {
 108                 kfree_skb(skb);
 109                 return -EMSGSIZE;
 110         }
 111         cfg80211_vendor_event(skb, GFP_KERNEL);
 112         return 0;
 113 }
 114
 115 static void wlcore_event_time_sync(struct wl1271 *wl,
 116                                    u16 tsf_high_msb, u16 tsf_high_lsb,
 117                                    u16 tsf_low_msb, u16 tsf_low_lsb)
 118 {
 119         u32 clock_low;
 120         u32 clock_high;
 121
 122         clock_high = (tsf_high_msb << 16) | tsf_high_lsb;
 123         clock_low = (tsf_low_msb << 16) | tsf_low_lsb;
 124
 125         wl1271_info("TIME_SYNC_EVENT_ID: clock_high %u, clock low %u",
 126                     clock_high, clock_low);
 127 }
 128
 129 int wl18xx_process_mailbox_events(struct wl1271 *wl)
 130 {
 131         struct wl18xx_event_mailbox *mbox = wl->mbox;
 132         u32 vector;
 133
 134         vector = le32_to_cpu(mbox->events_vector);
 135         wl1271_debug(DEBUG_EVENT, "MBOX vector: 0x%x", vector);
 136
 137         if (vector & SCAN_COMPLETE_EVENT_ID) {
 138                 wl1271_debug(DEBUG_EVENT, "scan results: %d",
 139                              mbox->number_of_scan_results);
 140
 141                 if (wl->scan_wlvif)
 142                         wl18xx_scan_completed(wl, wl->scan_wlvif);
 143         }
 144
 145         if (vector & TIME_SYNC_EVENT_ID)
 146                 wlcore_event_time_sync(wl,
 147                         mbox->time_sync_tsf_high_msb,
 148                         mbox->time_sync_tsf_high_lsb,
 149                         mbox->time_sync_tsf_low_msb,
 150                         mbox->time_sync_tsf_low_lsb);
 151
 152         if (vector & RADAR_DETECTED_EVENT_ID) {
 153                 wl1271_info("radar event: channel %d type %s",
 154                             mbox->radar_channel,
 155                             wl18xx_radar_type_decode(mbox->radar_type));
 156
 157                 if (!wl->radar_debug_mode)
 158                         ieee80211_radar_detected(wl->hw);
 159         }
 160
 161         if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) {
 162                 wl1271_debug(DEBUG_EVENT,
 163                              "PERIODIC_SCAN_REPORT_EVENT (results %d)",
 164                              mbox->number_of_sched_scan_results);
 165
 166                 wlcore_scan_sched_scan_results(wl);
 167         }
 168
 169         if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID)
 170                 wlcore_event_sched_scan_completed(wl, 1);
 171
 172         if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID)
 173                 wlcore_event_rssi_trigger(wl, mbox->rssi_snr_trigger_metric);
 174
 175         if (vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)
 176                 wlcore_event_ba_rx_constraint(wl,
 177                                 le16_to_cpu(mbox->rx_ba_role_id_bitmap),
 178                                 le16_to_cpu(mbox->rx_ba_allowed_bitmap));
 179
 180         if (vector & BSS_LOSS_EVENT_ID)
 181                 wlcore_event_beacon_loss(wl,
 182                                          le16_to_cpu(mbox->bss_loss_bitmap));
 183
 184         if (vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID)
 185                 wlcore_event_channel_switch(wl,
 186                         le16_to_cpu(mbox->channel_switch_role_id_bitmap),
 187                         true);
 188
 189         if (vector & DUMMY_PACKET_EVENT_ID)
 190                 wlcore_event_dummy_packet(wl);
 191
 192         /*
 193          * "TX retries exceeded" has a different meaning according to mode.
 194          * In AP mode the offending station is disconnected.
 195          */
 196         if (vector & MAX_TX_FAILURE_EVENT_ID)
 197                 wlcore_event_max_tx_failure(wl,
 198                                 le16_to_cpu(mbox->tx_retry_exceeded_bitmap));
 199
 200         if (vector & INACTIVE_STA_EVENT_ID)
 201                 wlcore_event_inactive_sta(wl,
 202                                 le16_to_cpu(mbox->inactive_sta_bitmap));
 203
 204         if (vector & REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID)
 205                 wlcore_event_roc_complete(wl);
 206
 207         if (vector & SMART_CONFIG_SYNC_EVENT_ID)
 208                 wlcore_smart_config_sync_event(wl, mbox->sc_sync_channel,
 209                                                mbox->sc_sync_band);
 210
 211         if (vector & SMART_CONFIG_DECODE_EVENT_ID)
 212                 wlcore_smart_config_decode_event(wl,
 213                                                  mbox->sc_ssid_len,
 214                                                  mbox->sc_ssid,
 215                                                  mbox->sc_pwd_len,
 216                                                  mbox->sc_pwd);
 217         if (vector & FW_LOGGER_INDICATION)
 218                 wlcore_event_fw_logger(wl);
 219
 220         return 0;
 221 }