LXR linux/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
  29int wlcore_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
  30                const u8 *ssid, size_t ssid_len,
  31                struct cfg80211_scan_request *req);
  32int 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);
  35void wl1271_scan_stm(struct wl1271 *wl, struct wl12xx_vif *wlvif);
  36void wl1271_scan_complete_work(struct work_struct *work);
  37int wl1271_scan_sched_scan_config(struct wl1271 *wl,
  38                                     struct wl12xx_vif *wlvif,
  39                                     struct cfg80211_sched_scan_request *req,
  40                                     struct ieee80211_sched_scan_ies *ies);
  41int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif);
  42void 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
  58enum {
  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
  67struct 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
  88enum {
  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
  95enum {
  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
 105struct 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
 121enum {
 122        SCAN_SSID_TYPE_PUBLIC = 0,
 123        SCAN_SSID_TYPE_HIDDEN = 1,
 124};
 125
 126struct wl1271_ssid {
 127        u8 type;
 128        u8 len;
 129        u8 ssid[IEEE80211_MAX_SSID_LEN];
 130        /* u8 padding[2]; */
 131} __packed;
 132
 133struct 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
 142struct 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
 153enum {
 154        SCAN_TYPE_SEARCH        = 0,
 155        SCAN_TYPE_PERIODIC      = 1,
 156        SCAN_TYPE_TRACKING      = 2,
 157};
 158
 159bool
 160wlcore_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
 167int
 168wlcore_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__ */
 173