// SPDX-License-Identifier: GPL-2.0
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/******************************************************************************
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*
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* Copyright(c) 2009-2010 Realtek Corporation.
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*
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*****************************************************************************/
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#include <drv_types.h>
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#include <rtw_debug.h>
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#include <rtw_wifi_regd.h>
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/*
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* REG_RULE(freq start, freq end, bandwidth, max gain, eirp, reg_flags)
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*/
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/*
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* Only these channels all allow active
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* scan on all world regulatory domains
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*/
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/* 2G chan 01 - chan 11 */
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#define RTW_2GHZ_CH01_11 \
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REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0)
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/*
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* We enable active scan on these a case
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* by case basis by regulatory domain
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*/
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/* 2G chan 12 - chan 13, PASSIV SCAN */
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#define RTW_2GHZ_CH12_13 \
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REG_RULE(2467 - 10, 2472 + 10, 40, 0, 20, \
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NL80211_RRF_PASSIVE_SCAN)
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static const struct ieee80211_regdomain rtw_regdom_rd = {
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.n_reg_rules = 2,
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.alpha2 = "99",
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.reg_rules = {
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RTW_2GHZ_CH01_11,
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RTW_2GHZ_CH12_13,
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}
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};
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static int rtw_ieee80211_channel_to_frequency(int chan, int band)
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{
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/* see 802.11 17.3.8.3.2 and Annex J
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* there are overlapping channel numbers in 5GHz and 2GHz bands
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*/
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/* NL80211_BAND_2GHZ */
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if (chan == 14)
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return 2484;
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else if (chan < 14)
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return 2407 + chan * 5;
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else
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return 0; /* not supported */
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}
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static void _rtw_reg_apply_flags(struct wiphy *wiphy)
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{
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struct adapter *padapter = wiphy_to_adapter(wiphy);
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struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
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RT_CHANNEL_INFO *channel_set = pmlmeext->channel_set;
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u8 max_chan_nums = pmlmeext->max_chan_nums;
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struct ieee80211_supported_band *sband;
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struct ieee80211_channel *ch;
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unsigned int i, j;
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u16 channel;
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u32 freq;
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/* all channels disable */
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for (i = 0; i < NUM_NL80211_BANDS; i++) {
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sband = wiphy->bands[i];
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if (sband) {
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for (j = 0; j < sband->n_channels; j++) {
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ch = &sband->channels[j];
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if (ch)
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ch->flags = IEEE80211_CHAN_DISABLED;
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}
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}
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}
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/* channels apply by channel plans. */
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for (i = 0; i < max_chan_nums; i++) {
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channel = channel_set[i].ChannelNum;
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freq =
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rtw_ieee80211_channel_to_frequency(channel,
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NL80211_BAND_2GHZ);
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ch = ieee80211_get_channel(wiphy, freq);
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if (ch) {
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if (channel_set[i].ScanType == SCAN_PASSIVE)
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ch->flags = IEEE80211_CHAN_NO_IR;
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else
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ch->flags = 0;
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}
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}
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}
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static int _rtw_reg_notifier_apply(struct wiphy *wiphy,
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struct regulatory_request *request,
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struct rtw_regulatory *reg)
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{
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/* Hard code flags */
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_rtw_reg_apply_flags(wiphy);
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return 0;
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}
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static const struct ieee80211_regdomain *_rtw_regdomain_select(struct
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rtw_regulatory
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*reg)
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{
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return &rtw_regdom_rd;
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}
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static void _rtw_regd_init_wiphy(struct rtw_regulatory *reg,
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struct wiphy *wiphy,
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void (*reg_notifier)(struct wiphy *wiphy,
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struct
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regulatory_request *
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request))
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{
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const struct ieee80211_regdomain *regd;
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wiphy->reg_notifier = reg_notifier;
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wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
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wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG;
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wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS;
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regd = _rtw_regdomain_select(reg);
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wiphy_apply_custom_regulatory(wiphy, regd);
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/* Hard code flags */
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_rtw_reg_apply_flags(wiphy);
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}
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int rtw_regd_init(struct adapter *padapter,
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void (*reg_notifier)(struct wiphy *wiphy,
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struct regulatory_request *request))
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{
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struct wiphy *wiphy = padapter->rtw_wdev->wiphy;
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_rtw_regd_init_wiphy(NULL, wiphy, reg_notifier);
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return 0;
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}
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void rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
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{
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struct rtw_regulatory *reg = NULL;
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DBG_8192C("%s\n", __func__);
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_rtw_reg_notifier_apply(wiphy, request, reg);
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}
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