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_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
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
94enum {
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
101enum {
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
111struct 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
127enum {
128	SCAN_SSID_TYPE_PUBLIC = 0,
129	SCAN_SSID_TYPE_HIDDEN = 1,
130};
131
132struct wl1271_ssid {
133	u8 type;
134	u8 len;
135	u8 ssid[IEEE80211_MAX_SSID_LEN];
136	/* u8 padding[2]; */
137} __packed;
138
139struct 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
148struct 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
159enum {
160	SCAN_TYPE_SEARCH	= 0,
161	SCAN_TYPE_PERIODIC	= 1,
162	SCAN_TYPE_TRACKING	= 2,
163};
164
165bool
166wlcore_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
173int
174wlcore_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