1 // SPDX-License-Identifier: GPL-2.0 2 /****************************************************************************** 3 * 4 * Copyright(c) 2009-2010 Realtek Corporation. 5 * 6 *****************************************************************************/ 7 8 #include <drv_types.h> 9 #include <rtw_debug.h> 10 11 #include <rtw_wifi_regd.h> 12 13 /* 14 * REG_RULE(freq start, freq end, bandwidth, max gain, eirp, reg_flags) 15 */ 16 17 /* 18 * Only these channels all allow active 19 * scan on all world regulatory domains 20 */ 21 22 /* 2G chan 01 - chan 11 */ 23 #define RTW_2GHZ_CH01_11 \ 24 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) 25 26 /* 27 * We enable active scan on these a case 28 * by case basis by regulatory domain 29 */ 30 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) 35 36 static const struct ieee80211_regdomain rtw_regdom_rd = { 37 .n_reg_rules = 2, 38 .alpha2 = "99", 39 .reg_rules = { 40 RTW_2GHZ_CH01_11, 41 RTW_2GHZ_CH12_13, 42 } 43 }; 44 45 static int rtw_ieee80211_channel_to_frequency(int chan, int band) 46 { 47 /* NL80211_BAND_2GHZ */ 48 if (chan == 14) 49 return 2484; 50 else if (chan < 14) 51 return 2407 + chan * 5; 52 else 53 return 0; /* not supported */ 54 } 55 56 static void _rtw_reg_apply_flags(struct wiphy *wiphy) 57 { 58 struct adapter *padapter = wiphy_to_adapter(wiphy); 59 struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv; 60 struct rt_channel_info *channel_set = pmlmeext->channel_set; 61 u8 max_chan_nums = pmlmeext->max_chan_nums; 62 63 struct ieee80211_supported_band *sband; 64 struct ieee80211_channel *ch; 65 unsigned int i, j; 66 u16 channel; 67 u32 freq; 68 69 /* all channels disable */ 70 for (i = 0; i < NUM_NL80211_BANDS; i++) { 71 sband = wiphy->bands[i]; 72 73 if (sband) { 74 for (j = 0; j < sband->n_channels; j++) { 75 ch = &sband->channels[j]; 76 77 if (ch) 78 ch->flags = IEEE80211_CHAN_DISABLED; 79 } 80 } 81 } 82 83 /* channels apply by channel plans. */ 84 for (i = 0; i < max_chan_nums; i++) { 85 channel = channel_set[i].ChannelNum; 86 freq = 87 rtw_ieee80211_channel_to_frequency(channel, 88 NL80211_BAND_2GHZ); 89 90 ch = ieee80211_get_channel(wiphy, freq); 91 if (ch) { 92 if (channel_set[i].ScanType == SCAN_PASSIVE) 93 ch->flags = IEEE80211_CHAN_NO_IR; 94 else 95 ch->flags = 0; 96 } 97 } 98 } 99 100 static int _rtw_reg_notifier_apply(struct wiphy *wiphy, 101 struct regulatory_request *request, 102 struct rtw_regulatory *reg) 103 { 104 /* Hard code flags */ 105 _rtw_reg_apply_flags(wiphy); 106 return 0; 107 } 108 109 static const struct ieee80211_regdomain *_rtw_regdomain_select(struct 110 rtw_regulatory 111 *reg) 112 { 113 return &rtw_regdom_rd; 114 } 115 116 static void _rtw_regd_init_wiphy(struct rtw_regulatory *reg, 117 struct wiphy *wiphy, 118 void (*reg_notifier)(struct wiphy *wiphy, 119 struct 120 regulatory_request * 121 request)) 122 { 123 const struct ieee80211_regdomain *regd; 124 125 wiphy->reg_notifier = reg_notifier; 126 127 wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; 128 wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG; 129 wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS; 130 131 regd = _rtw_regdomain_select(reg); 132 wiphy_apply_custom_regulatory(wiphy, regd); 133 134 /* Hard code flags */ 135 _rtw_reg_apply_flags(wiphy); 136 } 137 138 void rtw_regd_init(struct wiphy *wiphy, 139 void (*reg_notifier)(struct wiphy *wiphy, 140 struct regulatory_request *request)) 141 { 142 _rtw_regd_init_wiphy(NULL, wiphy, reg_notifier); 143 } 144 145 void rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) 146 { 147 struct rtw_regulatory *reg = NULL; 148 149 _rtw_reg_notifier_apply(wiphy, request, reg); 150 } 151