kernel/drivers/net/wireless/ti/wlcore/scan.h

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009-2010 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 #ifndef __SCAN_H__
  25 #define __SCAN_H__
  26
  27 #include "wlcore.h"
  28
  29 int wlcore_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
  30                 const u8 *ssid, size_t ssid_len,
  31                 struct cfg80211_scan_request *req);
  32 int wl1271_scan_build_probe_req(struct wl1271 *wl,
  33                                 const u8 *ssid, size_t ssid_len,
  34                                 const u8 *ie, size_t ie_len, u8 band);
  35 void wl1271_scan_stm(struct wl1271 *wl, struct wl12xx_vif *wlvif);
  36 void wl1271_scan_complete_work(struct work_struct *work);
  37 int wl1271_scan_sched_scan_config(struct wl1271 *wl,
  38                                      struct wl12xx_vif *wlvif,
  39                                      struct cfg80211_sched_scan_request *req,
  40                                      struct ieee80211_scan_ies *ies);
  41 int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif);
  42 void wlcore_scan_sched_scan_results(struct wl1271 *wl);
  43
  44 #define WL1271_SCAN_MAX_CHANNELS       24
  45 #define WL1271_SCAN_DEFAULT_TAG        1
  46 #define WL1271_SCAN_CURRENT_TX_PWR     0
  47 #define WL1271_SCAN_OPT_ACTIVE         0
  48 #define WL1271_SCAN_OPT_PASSIVE        1
  49 #define WL1271_SCAN_OPT_SPLIT_SCAN     2
  50 #define WL1271_SCAN_OPT_PRIORITY_HIGH  4
  51 /* scan even if we fail to enter psm */
  52 #define WL1271_SCAN_OPT_FORCE          8
  53 #define WL1271_SCAN_BAND_2_4_GHZ 0
  54 #define WL1271_SCAN_BAND_5_GHZ 1
  55
  56 #define WL1271_SCAN_TIMEOUT    30000 /* msec */
  57
  58 enum {
  59         WL1271_SCAN_STATE_IDLE,
  60         WL1271_SCAN_STATE_2GHZ_ACTIVE,
  61         WL1271_SCAN_STATE_2GHZ_PASSIVE,
  62         WL1271_SCAN_STATE_5GHZ_ACTIVE,
  63         WL1271_SCAN_STATE_5GHZ_PASSIVE,
  64         WL1271_SCAN_STATE_DONE
  65 };
  66
  67 struct wl1271_cmd_trigger_scan_to {
  68         struct wl1271_cmd_header header;
  69
  70         __le32 timeout;
  71 } __packed;
  72
  73 #define MAX_CHANNELS_2GHZ       14
  74 #define MAX_CHANNELS_4GHZ       4
  75
  76 /*
  77  * This max value here is used only for the struct definition of
  78  * wlcore_scan_channels. This struct is used by both 12xx
  79  * and 18xx (which have different max 5ghz channels value).
  80  * In order to make sure this is large enough, just use the
  81  * max possible 5ghz channels.
  82  */
  83 #define MAX_CHANNELS_5GHZ       42
  84
  85 #define SCAN_MAX_CYCLE_INTERVALS 16
  86 #define SCAN_MAX_BANDS 3
  87
  88 enum {
  89         SCAN_SSID_FILTER_ANY      = 0,
  90         SCAN_SSID_FILTER_SPECIFIC = 1,
  91         SCAN_SSID_FILTER_LIST     = 2,
  92         SCAN_SSID_FILTER_DISABLED = 3
  93 };
  94
  95 enum {
  96         SCAN_BSS_TYPE_INDEPENDENT,
  97         SCAN_BSS_TYPE_INFRASTRUCTURE,
  98         SCAN_BSS_TYPE_ANY,
  99 };
 100
 101 #define SCAN_CHANNEL_FLAGS_DFS          BIT(0) /* channel is passive until an
 102                                                   activity is detected on it */
 103 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED  BIT(1)
 104
 105 struct conn_scan_ch_params {
 106         __le16 min_duration;
 107         __le16 max_duration;
 108         __le16 passive_duration;
 109
 110         u8  channel;
 111         u8  tx_power_att;
 112
 113         /* bit 0: DFS channel; bit 1: DFS enabled */
 114         u8  flags;
 115
 116         u8  padding[3];
 117 } __packed;
 118
 119 #define SCHED_SCAN_MAX_SSIDS 16
 120
 121 enum {
 122         SCAN_SSID_TYPE_PUBLIC = 0,
 123         SCAN_SSID_TYPE_HIDDEN = 1,
 124 };
 125
 126 struct wl1271_ssid {
 127         u8 type;
 128         u8 len;
 129         u8 ssid[IEEE80211_MAX_SSID_LEN];
 130         /* u8 padding[2]; */
 131 } __packed;
 132
 133 struct wl1271_cmd_sched_scan_ssid_list {
 134         struct wl1271_cmd_header header;
 135
 136         u8 n_ssids;
 137         struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
 138         u8 role_id;
 139         u8 padding[2];
 140 } __packed;
 141
 142 struct wlcore_scan_channels {
 143         u8 passive[SCAN_MAX_BANDS]; /* number of passive scan channels */
 144         u8 active[SCAN_MAX_BANDS];  /* number of active scan channels */
 145         u8 dfs;            /* number of dfs channels in 5ghz */
 146         u8 passive_active; /* number of passive before active channels 2.4ghz */
 147
 148         struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
 149         struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
 150         struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
 151 };
 152
 153 enum {
 154         SCAN_TYPE_SEARCH        = 0,
 155         SCAN_TYPE_PERIODIC      = 1,
 156         SCAN_TYPE_TRACKING      = 2,
 157 };
 158
 159 bool
 160 wlcore_set_scan_chan_params(struct wl1271 *wl,
 161                             struct wlcore_scan_channels *cfg,
 162                             struct ieee80211_channel *channels[],
 163                             u32 n_channels,
 164                             u32 n_ssids,
 165                             int scan_type);
 166
 167 int
 168 wlcore_scan_sched_scan_ssid_list(struct wl1271 *wl,
 169                                  struct wl12xx_vif *wlvif,
 170                                  struct cfg80211_sched_scan_request *req);
 171
 172 #endif /* __WL1271_SCAN_H__ */