1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * This file is part of wl1271
4  *
5  * Copyright (C) 2009-2010 Nokia Corporation
6  *
7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8  */
9 
10 #ifndef __SCAN_H__
11 #define __SCAN_H__
12 
13 #include "wlcore.h"
14 
15 int wlcore_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
16 		const u8 *ssid, size_t ssid_len,
17 		struct cfg80211_scan_request *req);
18 int wl1271_scan_build_probe_req(struct wl1271 *wl,
19 				const u8 *ssid, size_t ssid_len,
20 				const u8 *ie, size_t ie_len, u8 band);
21 void wl1271_scan_stm(struct wl1271 *wl, struct wl12xx_vif *wlvif);
22 void wl1271_scan_complete_work(struct work_struct *work);
23 int wl1271_scan_sched_scan_config(struct wl1271 *wl,
24 				     struct wl12xx_vif *wlvif,
25 				     struct cfg80211_sched_scan_request *req,
26 				     struct ieee80211_scan_ies *ies);
27 int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif);
28 void wlcore_scan_sched_scan_results(struct wl1271 *wl);
29 
30 #define WL1271_SCAN_MAX_CHANNELS       24
31 #define WL1271_SCAN_DEFAULT_TAG        1
32 #define WL1271_SCAN_CURRENT_TX_PWR     0
33 #define WL1271_SCAN_OPT_ACTIVE         0
34 #define WL1271_SCAN_OPT_PASSIVE	       1
35 #define WL1271_SCAN_OPT_SPLIT_SCAN     2
36 #define WL1271_SCAN_OPT_PRIORITY_HIGH  4
37 /* scan even if we fail to enter psm */
38 #define WL1271_SCAN_OPT_FORCE          8
39 #define WL1271_SCAN_BAND_2_4_GHZ 0
40 #define WL1271_SCAN_BAND_5_GHZ 1
41 
42 #define WL1271_SCAN_TIMEOUT    30000 /* msec */
43 
44 enum {
45 	WL1271_SCAN_STATE_IDLE,
46 	WL1271_SCAN_STATE_2GHZ_ACTIVE,
47 	WL1271_SCAN_STATE_2GHZ_PASSIVE,
48 	WL1271_SCAN_STATE_5GHZ_ACTIVE,
49 	WL1271_SCAN_STATE_5GHZ_PASSIVE,
50 	WL1271_SCAN_STATE_DONE
51 };
52 
53 struct wl1271_cmd_trigger_scan_to {
54 	struct wl1271_cmd_header header;
55 
56 	__le32 timeout;
57 } __packed;
58 
59 #define MAX_CHANNELS_2GHZ	14
60 #define MAX_CHANNELS_4GHZ	4
61 
62 /*
63  * This max value here is used only for the struct definition of
64  * wlcore_scan_channels. This struct is used by both 12xx
65  * and 18xx (which have different max 5ghz channels value).
66  * In order to make sure this is large enough, just use the
67  * max possible 5ghz channels.
68  */
69 #define MAX_CHANNELS_5GHZ	42
70 
71 #define SCAN_MAX_CYCLE_INTERVALS 16
72 
73 /* The FW intervals can take up to 16 entries.
74  * The 1st entry isn't used (scan is immediate). The last
75  * entry should be used for the long_interval
76  */
77 #define SCAN_MAX_SHORT_INTERVALS (SCAN_MAX_CYCLE_INTERVALS - 2)
78 #define SCAN_MAX_BANDS 3
79 
80 enum {
81 	SCAN_SSID_FILTER_ANY      = 0,
82 	SCAN_SSID_FILTER_SPECIFIC = 1,
83 	SCAN_SSID_FILTER_LIST     = 2,
84 	SCAN_SSID_FILTER_DISABLED = 3
85 };
86 
87 enum {
88 	SCAN_BSS_TYPE_INDEPENDENT,
89 	SCAN_BSS_TYPE_INFRASTRUCTURE,
90 	SCAN_BSS_TYPE_ANY,
91 };
92 
93 #define SCAN_CHANNEL_FLAGS_DFS		BIT(0) /* channel is passive until an
94 						  activity is detected on it */
95 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED	BIT(1)
96 
97 struct conn_scan_ch_params {
98 	__le16 min_duration;
99 	__le16 max_duration;
100 	__le16 passive_duration;
101 
102 	u8  channel;
103 	u8  tx_power_att;
104 
105 	/* bit 0: DFS channel; bit 1: DFS enabled */
106 	u8  flags;
107 
108 	u8  padding[3];
109 } __packed;
110 
111 #define SCHED_SCAN_MAX_SSIDS 16
112 
113 enum {
114 	SCAN_SSID_TYPE_PUBLIC = 0,
115 	SCAN_SSID_TYPE_HIDDEN = 1,
116 };
117 
118 struct wl1271_ssid {
119 	u8 type;
120 	u8 len;
121 	u8 ssid[IEEE80211_MAX_SSID_LEN];
122 	/* u8 padding[2]; */
123 } __packed;
124 
125 struct wl1271_cmd_sched_scan_ssid_list {
126 	struct wl1271_cmd_header header;
127 
128 	u8 n_ssids;
129 	struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
130 	u8 role_id;
131 	u8 padding[2];
132 } __packed;
133 
134 struct wlcore_scan_channels {
135 	u8 passive[SCAN_MAX_BANDS]; /* number of passive scan channels */
136 	u8 active[SCAN_MAX_BANDS];  /* number of active scan channels */
137 	u8 dfs;		   /* number of dfs channels in 5ghz */
138 	u8 passive_active; /* number of passive before active channels 2.4ghz */
139 
140 	struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
141 	struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
142 	struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
143 };
144 
145 enum {
146 	SCAN_TYPE_SEARCH	= 0,
147 	SCAN_TYPE_PERIODIC	= 1,
148 	SCAN_TYPE_TRACKING	= 2,
149 };
150 
151 bool
152 wlcore_set_scan_chan_params(struct wl1271 *wl,
153 			    struct wlcore_scan_channels *cfg,
154 			    struct ieee80211_channel *channels[],
155 			    u32 n_channels,
156 			    u32 n_ssids,
157 			    int scan_type);
158 
159 int
160 wlcore_scan_sched_scan_ssid_list(struct wl1271 *wl,
161 				 struct wl12xx_vif *wlvif,
162 				 struct cfg80211_sched_scan_request *req);
163 
164 #endif /* __WL1271_SCAN_H__ */
165