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
 15int wlcore_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
 16		const u8 *ssid, size_t ssid_len,
 17		struct cfg80211_scan_request *req);
 18int 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);
 21void wl1271_scan_stm(struct wl1271 *wl, struct wl12xx_vif *wlvif);
 22void wl1271_scan_complete_work(struct work_struct *work);
 23int 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);
 27int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif);
 28void 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
 44enum {
 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
 53struct 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
 80enum {
 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
 87enum {
 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
 97struct 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
113enum {
114	SCAN_SSID_TYPE_PUBLIC = 0,
115	SCAN_SSID_TYPE_HIDDEN = 1,
116};
117
118struct wl1271_ssid {
119	u8 type;
120	u8 len;
121	u8 ssid[IEEE80211_MAX_SSID_LEN];
122	/* u8 padding[2]; */
123} __packed;
124
125struct 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
134struct 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
145enum {
146	SCAN_TYPE_SEARCH	= 0,
147	SCAN_TYPE_PERIODIC	= 1,
148	SCAN_TYPE_TRACKING	= 2,
149};
150
151bool
152wlcore_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
159int
160wlcore_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__ */