Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6.git] / drivers / net / wireless / wl12xx / 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 "wl12xx.h"
28
29 int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
30                 struct cfg80211_scan_request *req);
31 int wl1271_scan_stop(struct wl1271 *wl);
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);
36 void wl1271_scan_complete_work(struct work_struct *work);
37 int wl1271_scan_sched_scan_config(struct wl1271 *wl,
38                                      struct cfg80211_sched_scan_request *req,
39                                      struct ieee80211_sched_scan_ies *ies);
40 int wl1271_scan_sched_scan_start(struct wl1271 *wl);
41 void wl1271_scan_sched_scan_stop(struct wl1271 *wl);
42 void wl1271_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_PRIORITY_HIGH  4
50 #define WL1271_SCAN_BAND_2_4_GHZ 0
51 #define WL1271_SCAN_BAND_5_GHZ 1
52
53 #define WL1271_SCAN_TIMEOUT    10000 /* msec */
54
55 enum {
56         WL1271_SCAN_STATE_IDLE,
57         WL1271_SCAN_STATE_2GHZ_ACTIVE,
58         WL1271_SCAN_STATE_2GHZ_PASSIVE,
59         WL1271_SCAN_STATE_5GHZ_ACTIVE,
60         WL1271_SCAN_STATE_5GHZ_PASSIVE,
61         WL1271_SCAN_STATE_DONE
62 };
63
64 struct basic_scan_params {
65         __le32 rx_config_options;
66         __le32 rx_filter_options;
67         /* Scan option flags (WL1271_SCAN_OPT_*) */
68         __le16 scan_options;
69         /* Number of scan channels in the list (maximum 30) */
70         u8 n_ch;
71         /* This field indicates the number of probe requests to send
72            per channel for an active scan */
73         u8 n_probe_reqs;
74         /* Rate bit field for sending the probes */
75         __le32 tx_rate;
76         u8 tid_trigger;
77         u8 ssid_len;
78         /* in order to align */
79         u8 padding1[2];
80         u8 ssid[IW_ESSID_MAX_SIZE];
81         /* Band to scan */
82         u8 band;
83         u8 use_ssid_list;
84         u8 scan_tag;
85         u8 padding2;
86 } __packed;
87
88 struct basic_scan_channel_params {
89         /* Duration in TU to wait for frames on a channel for active scan */
90         __le32 min_duration;
91         __le32 max_duration;
92         __le32 bssid_lsb;
93         __le16 bssid_msb;
94         u8 early_termination;
95         u8 tx_power_att;
96         u8 channel;
97         /* FW internal use only! */
98         u8 dfs_candidate;
99         u8 activity_detected;
100         u8 pad;
101 } __packed;
102
103 struct wl1271_cmd_scan {
104         struct wl1271_cmd_header header;
105
106         struct basic_scan_params params;
107         struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS];
108 } __packed;
109
110 struct wl1271_cmd_trigger_scan_to {
111         struct wl1271_cmd_header header;
112
113         __le32 timeout;
114 } __packed;
115
116 #define MAX_CHANNELS_2GHZ       14
117 #define MAX_CHANNELS_5GHZ       23
118 #define MAX_CHANNELS_4GHZ       4
119
120 #define SCAN_MAX_CYCLE_INTERVALS 16
121 #define SCAN_MAX_BANDS 3
122
123 enum {
124         SCAN_SSID_FILTER_ANY      = 0,
125         SCAN_SSID_FILTER_SPECIFIC = 1,
126         SCAN_SSID_FILTER_LIST     = 2,
127         SCAN_SSID_FILTER_DISABLED = 3
128 };
129
130 enum {
131         SCAN_BSS_TYPE_INDEPENDENT,
132         SCAN_BSS_TYPE_INFRASTRUCTURE,
133         SCAN_BSS_TYPE_ANY,
134 };
135
136 #define SCAN_CHANNEL_FLAGS_DFS          BIT(0)
137 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED  BIT(1)
138
139 struct conn_scan_ch_params {
140         __le16 min_duration;
141         __le16 max_duration;
142         __le16 passive_duration;
143
144         u8  channel;
145         u8  tx_power_att;
146
147         /* bit 0: DFS channel; bit 1: DFS enabled */
148         u8  flags;
149
150         u8  padding[3];
151 } __packed;
152
153 struct wl1271_cmd_sched_scan_config {
154         struct wl1271_cmd_header header;
155
156         __le32 intervals[SCAN_MAX_CYCLE_INTERVALS];
157
158         s8 rssi_threshold; /* for filtering (in dBm) */
159         s8 snr_threshold;  /* for filtering (in dB) */
160
161         u8 cycles;       /* maximum number of scan cycles */
162         u8 report_after; /* report when this number of results are received */
163         u8 terminate;    /* stop scanning after reporting */
164
165         u8 tag;
166         u8 bss_type; /* for filtering */
167         u8 filter_type;
168
169         u8 ssid_len;     /* For SCAN_SSID_FILTER_SPECIFIC */
170         u8 ssid[IW_ESSID_MAX_SIZE];
171
172         u8 n_probe_reqs; /* Number of probes requests per channel */
173
174         u8 passive[SCAN_MAX_BANDS];
175         u8 active[SCAN_MAX_BANDS];
176
177         u8 dfs;
178
179         u8 padding[3];
180
181         struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
182         struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
183         struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
184 } __packed;
185
186
187 #define SCHED_SCAN_MAX_SSIDS 8
188
189 enum {
190         SCAN_SSID_TYPE_PUBLIC = 0,
191         SCAN_SSID_TYPE_HIDDEN = 1,
192 };
193
194 struct wl1271_ssid {
195         u8 type;
196         u8 len;
197         u8 ssid[IW_ESSID_MAX_SIZE];
198         /* u8 padding[2]; */
199 } __packed;
200
201 struct wl1271_cmd_sched_scan_ssid_list {
202         struct wl1271_cmd_header header;
203
204         u8 n_ssids;
205         struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
206         u8 padding[3];
207 } __packed;
208
209 struct wl1271_cmd_sched_scan_start {
210         struct wl1271_cmd_header header;
211
212         u8 tag;
213         u8 padding[3];
214 } __packed;
215
216 struct wl1271_cmd_sched_scan_stop {
217         struct wl1271_cmd_header header;
218
219         u8 tag;
220         u8 padding[3];
221 } __packed;
222
223
224 #endif /* __WL1271_SCAN_H__ */