1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
4 * Copyright(c) 2009-2010 Realtek Corporation.
6 *****************************************************************************/
11 #include <rtw_wifi_regd.h>
14 * REG_RULE(freq start, freq end, bandwidth, max gain, eirp, reg_flags)
18 * Only these channels all allow active
19 * scan on all world regulatory domains
22 /* 2G chan 01 - chan 11 */
23 #define RTW_2GHZ_CH01_11 \
24 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0)
27 * We enable active scan on these a case
28 * by case basis by regulatory domain
31 /* 2G chan 12 - chan 13, PASSIV SCAN */
32 #define RTW_2GHZ_CH12_13 \
33 REG_RULE(2467 - 10, 2472 + 10, 40, 0, 20, \
34 NL80211_RRF_PASSIVE_SCAN)
36 /* 2G chan 14, PASSIVS SCAN, NO OFDM (B only) */
37 #define RTW_2GHZ_CH14 \
38 REG_RULE(2484 - 10, 2484 + 10, 40, 0, 20, \
39 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM)
41 static const struct ieee80211_regdomain rtw_regdom_rd = {
50 static int rtw_ieee80211_channel_to_frequency(int chan, int band)
52 /* see 802.11 17.3.8.3.2 and Annex J
53 * there are overlapping channel numbers in 5GHz and 2GHz bands
56 /* NL80211_BAND_2GHZ */
60 return 2407 + chan * 5;
62 return 0; /* not supported */
65 static void _rtw_reg_apply_flags(struct wiphy *wiphy)
67 struct adapter *padapter = wiphy_to_adapter(wiphy);
68 struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
69 RT_CHANNEL_INFO *channel_set = pmlmeext->channel_set;
70 u8 max_chan_nums = pmlmeext->max_chan_nums;
72 struct ieee80211_supported_band *sband;
73 struct ieee80211_channel *ch;
78 /* all channels disable */
79 for (i = 0; i < NUM_NL80211_BANDS; i++) {
80 sband = wiphy->bands[i];
83 for (j = 0; j < sband->n_channels; j++) {
84 ch = &sband->channels[j];
87 ch->flags = IEEE80211_CHAN_DISABLED;
92 /* channels apply by channel plans. */
93 for (i = 0; i < max_chan_nums; i++) {
94 channel = channel_set[i].ChannelNum;
96 rtw_ieee80211_channel_to_frequency(channel,
99 ch = ieee80211_get_channel(wiphy, freq);
101 if (channel_set[i].ScanType == SCAN_PASSIVE)
102 ch->flags = IEEE80211_CHAN_NO_IR;
109 static int _rtw_reg_notifier_apply(struct wiphy *wiphy,
110 struct regulatory_request *request,
111 struct rtw_regulatory *reg)
113 /* Hard code flags */
114 _rtw_reg_apply_flags(wiphy);
118 static const struct ieee80211_regdomain *_rtw_regdomain_select(struct
122 return &rtw_regdom_rd;
125 static void _rtw_regd_init_wiphy(struct rtw_regulatory *reg,
127 void (*reg_notifier)(struct wiphy *wiphy,
132 const struct ieee80211_regdomain *regd;
134 wiphy->reg_notifier = reg_notifier;
136 wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
137 wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG;
138 wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS;
140 regd = _rtw_regdomain_select(reg);
141 wiphy_apply_custom_regulatory(wiphy, regd);
143 /* Hard code flags */
144 _rtw_reg_apply_flags(wiphy);
147 int rtw_regd_init(struct adapter *padapter,
148 void (*reg_notifier)(struct wiphy *wiphy,
149 struct regulatory_request *request))
151 struct wiphy *wiphy = padapter->rtw_wdev->wiphy;
153 _rtw_regd_init_wiphy(NULL, wiphy, reg_notifier);
158 void rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
160 struct rtw_regulatory *reg = NULL;
162 DBG_8192C("%s\n", __func__);
164 _rtw_reg_notifier_apply(wiphy, request, reg);