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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
554c0a3a HG |
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 | /* | |
7bb61981 FW |
18 | * Only these channels all allow active |
19 | * scan on all world regulatory domains | |
554c0a3a HG |
20 | */ |
21 | ||
22 | /* 2G chan 01 - chan 11 */ | |
23 | #define RTW_2GHZ_CH01_11 \ | |
a7941a08 | 24 | REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) |
554c0a3a HG |
25 | |
26 | /* | |
7bb61981 FW |
27 | * We enable active scan on these a case |
28 | * by case basis by regulatory domain | |
554c0a3a HG |
29 | */ |
30 | ||
31 | /* 2G chan 12 - chan 13, PASSIV SCAN */ | |
32 | #define RTW_2GHZ_CH12_13 \ | |
a7941a08 | 33 | REG_RULE(2467 - 10, 2472 + 10, 40, 0, 20, \ |
554c0a3a HG |
34 | NL80211_RRF_PASSIVE_SCAN) |
35 | ||
36 | /* 2G chan 14, PASSIVS SCAN, NO OFDM (B only) */ | |
37 | #define RTW_2GHZ_CH14 \ | |
a7941a08 | 38 | REG_RULE(2484 - 10, 2484 + 10, 40, 0, 20, \ |
554c0a3a HG |
39 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM) |
40 | ||
41 | static const struct ieee80211_regdomain rtw_regdom_rd = { | |
42 | .n_reg_rules = 3, | |
43 | .alpha2 = "99", | |
44 | .reg_rules = { | |
dae24da6 FW |
45 | RTW_2GHZ_CH01_11, |
46 | RTW_2GHZ_CH12_13, | |
47 | } | |
554c0a3a HG |
48 | }; |
49 | ||
50 | static int rtw_ieee80211_channel_to_frequency(int chan, int band) | |
51 | { | |
52 | /* see 802.11 17.3.8.3.2 and Annex J | |
7bb61981 FW |
53 | * there are overlapping channel numbers in 5GHz and 2GHz bands |
54 | */ | |
554c0a3a HG |
55 | |
56 | /* NL80211_BAND_2GHZ */ | |
57 | if (chan == 14) | |
58 | return 2484; | |
59 | else if (chan < 14) | |
60 | return 2407 + chan * 5; | |
61 | else | |
62 | return 0; /* not supported */ | |
63 | } | |
64 | ||
65 | static void _rtw_reg_apply_flags(struct wiphy *wiphy) | |
66 | { | |
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; | |
71 | ||
72 | struct ieee80211_supported_band *sband; | |
73 | struct ieee80211_channel *ch; | |
74 | unsigned int i, j; | |
75 | u16 channel; | |
76 | u32 freq; | |
77 | ||
7bb61981 | 78 | /* all channels disable */ |
554c0a3a HG |
79 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
80 | sband = wiphy->bands[i]; | |
81 | ||
82 | if (sband) { | |
83 | for (j = 0; j < sband->n_channels; j++) { | |
84 | ch = &sband->channels[j]; | |
85 | ||
86 | if (ch) | |
87 | ch->flags = IEEE80211_CHAN_DISABLED; | |
88 | } | |
89 | } | |
90 | } | |
91 | ||
7bb61981 | 92 | /* channels apply by channel plans. */ |
554c0a3a HG |
93 | for (i = 0; i < max_chan_nums; i++) { |
94 | channel = channel_set[i].ChannelNum; | |
95 | freq = | |
96 | rtw_ieee80211_channel_to_frequency(channel, | |
97 | NL80211_BAND_2GHZ); | |
98 | ||
99 | ch = ieee80211_get_channel(wiphy, freq); | |
100 | if (ch) { | |
a8e1afcc | 101 | if (channel_set[i].ScanType == SCAN_PASSIVE) |
554c0a3a | 102 | ch->flags = IEEE80211_CHAN_NO_IR; |
a8e1afcc | 103 | else |
554c0a3a | 104 | ch->flags = 0; |
554c0a3a HG |
105 | } |
106 | } | |
107 | } | |
108 | ||
109 | static int _rtw_reg_notifier_apply(struct wiphy *wiphy, | |
110 | struct regulatory_request *request, | |
111 | struct rtw_regulatory *reg) | |
112 | { | |
113 | /* Hard code flags */ | |
114 | _rtw_reg_apply_flags(wiphy); | |
115 | return 0; | |
116 | } | |
117 | ||
118 | static const struct ieee80211_regdomain *_rtw_regdomain_select(struct | |
119 | rtw_regulatory | |
120 | *reg) | |
121 | { | |
122 | return &rtw_regdom_rd; | |
123 | } | |
124 | ||
125 | static void _rtw_regd_init_wiphy(struct rtw_regulatory *reg, | |
2b385530 FW |
126 | struct wiphy *wiphy, |
127 | void (*reg_notifier)(struct wiphy *wiphy, | |
128 | struct | |
129 | regulatory_request * | |
130 | request)) | |
554c0a3a HG |
131 | { |
132 | const struct ieee80211_regdomain *regd; | |
133 | ||
134 | wiphy->reg_notifier = reg_notifier; | |
135 | ||
136 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; | |
137 | wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG; | |
138 | wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS; | |
139 | ||
140 | regd = _rtw_regdomain_select(reg); | |
141 | wiphy_apply_custom_regulatory(wiphy, regd); | |
142 | ||
143 | /* Hard code flags */ | |
144 | _rtw_reg_apply_flags(wiphy); | |
145 | } | |
146 | ||
147 | int rtw_regd_init(struct adapter *padapter, | |
4276cfd3 | 148 | void (*reg_notifier)(struct wiphy *wiphy, |
554c0a3a HG |
149 | struct regulatory_request *request)) |
150 | { | |
554c0a3a | 151 | struct wiphy *wiphy = padapter->rtw_wdev->wiphy; |
84508607 | 152 | |
554c0a3a HG |
153 | _rtw_regd_init_wiphy(NULL, wiphy, reg_notifier); |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
158 | void rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) | |
159 | { | |
160 | struct rtw_regulatory *reg = NULL; | |
161 | ||
162 | DBG_8192C("%s\n", __func__); | |
163 | ||
164 | _rtw_reg_notifier_apply(wiphy, request, reg); | |
165 | } |