Luis R. Rodriguez | db86f07 | 2009-11-05 08:44:39 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009 Atheros Communications Inc. |
| 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * Module for common driver code between ath9k and ath9k_htc |
| 19 | */ |
| 20 | |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/module.h> |
| 23 | |
| 24 | #include "common.h" |
| 25 | |
| 26 | MODULE_AUTHOR("Atheros Communications"); |
| 27 | MODULE_DESCRIPTION("Shared library for Atheros wireless 802.11n LAN cards."); |
| 28 | MODULE_LICENSE("Dual BSD/GPL"); |
| 29 | |
Benoit Papillault | 1bc1488 | 2009-11-24 15:49:18 +0100 | [diff] [blame] | 30 | int ath9k_cmn_padpos(__le16 frame_control) |
| 31 | { |
| 32 | int padpos = 24; |
| 33 | if (ieee80211_has_a4(frame_control)) { |
| 34 | padpos += ETH_ALEN; |
| 35 | } |
| 36 | if (ieee80211_is_data_qos(frame_control)) { |
| 37 | padpos += IEEE80211_QOS_CTL_LEN; |
| 38 | } |
| 39 | |
| 40 | return padpos; |
| 41 | } |
| 42 | EXPORT_SYMBOL(ath9k_cmn_padpos); |
| 43 | |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 44 | int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb) |
| 45 | { |
| 46 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
| 47 | |
| 48 | if (tx_info->control.hw_key) { |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 49 | switch (tx_info->control.hw_key->cipher) { |
| 50 | case WLAN_CIPHER_SUITE_WEP40: |
| 51 | case WLAN_CIPHER_SUITE_WEP104: |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 52 | return ATH9K_KEY_TYPE_WEP; |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 53 | case WLAN_CIPHER_SUITE_TKIP: |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 54 | return ATH9K_KEY_TYPE_TKIP; |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 55 | case WLAN_CIPHER_SUITE_CCMP: |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 56 | return ATH9K_KEY_TYPE_AES; |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 57 | default: |
| 58 | break; |
| 59 | } |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | return ATH9K_KEY_TYPE_CLEAR; |
| 63 | } |
| 64 | EXPORT_SYMBOL(ath9k_cmn_get_hw_crypto_keytype); |
| 65 | |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 66 | static u32 ath9k_get_extchanmode(struct ieee80211_channel *chan, |
| 67 | enum nl80211_channel_type channel_type) |
| 68 | { |
| 69 | u32 chanmode = 0; |
| 70 | |
| 71 | switch (chan->band) { |
| 72 | case IEEE80211_BAND_2GHZ: |
| 73 | switch (channel_type) { |
| 74 | case NL80211_CHAN_NO_HT: |
| 75 | case NL80211_CHAN_HT20: |
| 76 | chanmode = CHANNEL_G_HT20; |
| 77 | break; |
| 78 | case NL80211_CHAN_HT40PLUS: |
| 79 | chanmode = CHANNEL_G_HT40PLUS; |
| 80 | break; |
| 81 | case NL80211_CHAN_HT40MINUS: |
| 82 | chanmode = CHANNEL_G_HT40MINUS; |
| 83 | break; |
| 84 | } |
| 85 | break; |
| 86 | case IEEE80211_BAND_5GHZ: |
| 87 | switch (channel_type) { |
| 88 | case NL80211_CHAN_NO_HT: |
| 89 | case NL80211_CHAN_HT20: |
| 90 | chanmode = CHANNEL_A_HT20; |
| 91 | break; |
| 92 | case NL80211_CHAN_HT40PLUS: |
| 93 | chanmode = CHANNEL_A_HT40PLUS; |
| 94 | break; |
| 95 | case NL80211_CHAN_HT40MINUS: |
| 96 | chanmode = CHANNEL_A_HT40MINUS; |
| 97 | break; |
| 98 | } |
| 99 | break; |
| 100 | default: |
| 101 | break; |
| 102 | } |
| 103 | |
| 104 | return chanmode; |
| 105 | } |
| 106 | |
| 107 | /* |
| 108 | * Update internal channel flags. |
| 109 | */ |
Felix Fietkau | babcbc2 | 2010-10-20 02:09:46 +0200 | [diff] [blame] | 110 | void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan, |
| 111 | struct ieee80211_channel *chan, |
| 112 | enum nl80211_channel_type channel_type) |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 113 | { |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 114 | ichan->channel = chan->center_freq; |
| 115 | ichan->chan = chan; |
| 116 | |
| 117 | if (chan->band == IEEE80211_BAND_2GHZ) { |
| 118 | ichan->chanmode = CHANNEL_G; |
| 119 | ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G; |
| 120 | } else { |
| 121 | ichan->chanmode = CHANNEL_A; |
| 122 | ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM; |
| 123 | } |
| 124 | |
Felix Fietkau | babcbc2 | 2010-10-20 02:09:46 +0200 | [diff] [blame] | 125 | if (channel_type != NL80211_CHAN_NO_HT) |
| 126 | ichan->chanmode = ath9k_get_extchanmode(chan, channel_type); |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 127 | } |
| 128 | EXPORT_SYMBOL(ath9k_cmn_update_ichannel); |
| 129 | |
| 130 | /* |
| 131 | * Get the internal channel reference. |
| 132 | */ |
| 133 | struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw, |
| 134 | struct ath_hw *ah) |
| 135 | { |
| 136 | struct ieee80211_channel *curchan = hw->conf.channel; |
| 137 | struct ath9k_channel *channel; |
| 138 | u8 chan_idx; |
| 139 | |
| 140 | chan_idx = curchan->hw_value; |
| 141 | channel = &ah->channels[chan_idx]; |
Felix Fietkau | babcbc2 | 2010-10-20 02:09:46 +0200 | [diff] [blame] | 142 | ath9k_cmn_update_ichannel(channel, curchan, hw->conf.channel_type); |
Sujith | fb9987d | 2010-03-17 14:25:25 +0530 | [diff] [blame] | 143 | |
| 144 | return channel; |
| 145 | } |
| 146 | EXPORT_SYMBOL(ath9k_cmn_get_curchannel); |
| 147 | |
Sujith | 61389f3 | 2010-06-02 15:53:37 +0530 | [diff] [blame] | 148 | int ath9k_cmn_count_streams(unsigned int chainmask, int max) |
| 149 | { |
| 150 | int streams = 0; |
| 151 | |
| 152 | do { |
| 153 | if (++streams == max) |
| 154 | break; |
| 155 | } while ((chainmask = chainmask & (chainmask - 1))); |
| 156 | |
| 157 | return streams; |
| 158 | } |
| 159 | EXPORT_SYMBOL(ath9k_cmn_count_streams); |
| 160 | |
Vivek Natarajan | d99eeb8 | 2010-08-18 19:57:48 +0530 | [diff] [blame] | 161 | /* |
| 162 | * Configures appropriate weight based on stomp type. |
| 163 | */ |
| 164 | void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common, |
| 165 | enum ath_stomp_type stomp_type) |
| 166 | { |
| 167 | struct ath_hw *ah = common->ah; |
| 168 | |
| 169 | switch (stomp_type) { |
| 170 | case ATH_BTCOEX_STOMP_ALL: |
| 171 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, |
| 172 | AR_STOMP_ALL_WLAN_WGHT); |
| 173 | break; |
| 174 | case ATH_BTCOEX_STOMP_LOW: |
| 175 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, |
| 176 | AR_STOMP_LOW_WLAN_WGHT); |
| 177 | break; |
| 178 | case ATH_BTCOEX_STOMP_NONE: |
| 179 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, |
| 180 | AR_STOMP_NONE_WLAN_WGHT); |
| 181 | break; |
| 182 | default: |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 183 | ath_dbg(common, ATH_DBG_BTCOEX, |
| 184 | "Invalid Stomptype\n"); |
Vivek Natarajan | d99eeb8 | 2010-08-18 19:57:48 +0530 | [diff] [blame] | 185 | break; |
| 186 | } |
| 187 | |
| 188 | ath9k_hw_btcoex_enable(ah); |
| 189 | } |
| 190 | EXPORT_SYMBOL(ath9k_cmn_btcoex_bt_stomp); |
| 191 | |
Luis R. Rodriguez | db86f07 | 2009-11-05 08:44:39 -0800 | [diff] [blame] | 192 | static int __init ath9k_cmn_init(void) |
| 193 | { |
| 194 | return 0; |
| 195 | } |
| 196 | module_init(ath9k_cmn_init); |
| 197 | |
| 198 | static void __exit ath9k_cmn_exit(void) |
| 199 | { |
| 200 | return; |
| 201 | } |
| 202 | module_exit(ath9k_cmn_exit); |