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 87 /* The FW intervals can take up to 16 entries. 88 * The 1st entry isn't used (scan is immediate). The last 89 * entry should be used for the long_interval 90 */ 91 #define SCAN_MAX_SHORT_INTERVALS (SCAN_MAX_CYCLE_INTERVALS - 2) 92 #define SCAN_MAX_BANDS 3 93 94 enum { 95 SCAN_SSID_FILTER_ANY = 0, 96 SCAN_SSID_FILTER_SPECIFIC = 1, 97 SCAN_SSID_FILTER_LIST = 2, 98 SCAN_SSID_FILTER_DISABLED = 3 99 }; 100 101 enum { 102 SCAN_BSS_TYPE_INDEPENDENT, 103 SCAN_BSS_TYPE_INFRASTRUCTURE, 104 SCAN_BSS_TYPE_ANY, 105 }; 106 107 #define SCAN_CHANNEL_FLAGS_DFS BIT(0) /* channel is passive until an 108 activity is detected on it */ 109 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED BIT(1) 110 111 struct conn_scan_ch_params { 112 __le16 min_duration; 113 __le16 max_duration; 114 __le16 passive_duration; 115 116 u8 channel; 117 u8 tx_power_att; 118 119 /* bit 0: DFS channel; bit 1: DFS enabled */ 120 u8 flags; 121 122 u8 padding[3]; 123 } __packed; 124 125 #define SCHED_SCAN_MAX_SSIDS 16 126 127 enum { 128 SCAN_SSID_TYPE_PUBLIC = 0, 129 SCAN_SSID_TYPE_HIDDEN = 1, 130 }; 131 132 struct wl1271_ssid { 133 u8 type; 134 u8 len; 135 u8 ssid[IEEE80211_MAX_SSID_LEN]; 136 /* u8 padding[2]; */ 137 } __packed; 138 139 struct wl1271_cmd_sched_scan_ssid_list { 140 struct wl1271_cmd_header header; 141 142 u8 n_ssids; 143 struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS]; 144 u8 role_id; 145 u8 padding[2]; 146 } __packed; 147 148 struct wlcore_scan_channels { 149 u8 passive[SCAN_MAX_BANDS]; /* number of passive scan channels */ 150 u8 active[SCAN_MAX_BANDS]; /* number of active scan channels */ 151 u8 dfs; /* number of dfs channels in 5ghz */ 152 u8 passive_active; /* number of passive before active channels 2.4ghz */ 153 154 struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ]; 155 struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ]; 156 struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ]; 157 }; 158 159 enum { 160 SCAN_TYPE_SEARCH = 0, 161 SCAN_TYPE_PERIODIC = 1, 162 SCAN_TYPE_TRACKING = 2, 163 }; 164 165 bool 166 wlcore_set_scan_chan_params(struct wl1271 *wl, 167 struct wlcore_scan_channels *cfg, 168 struct ieee80211_channel *channels[], 169 u32 n_channels, 170 u32 n_ssids, 171 int scan_type); 172 173 int 174 wlcore_scan_sched_scan_ssid_list(struct wl1271 *wl, 175 struct wl12xx_vif *wlvif, 176 struct cfg80211_sched_scan_request *req); 177 178 #endif /* __WL1271_SCAN_H__ */ 179