2009-11-05 23:44:39 +07:00
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/*
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2011-05-17 15:06:18 +07:00
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* Copyright (c) 2009-2011 Atheros Communications Inc.
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2009-11-05 23:44:39 +07:00
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* Module for common driver code between ath9k and ath9k_htc
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include "common.h"
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MODULE_AUTHOR("Atheros Communications");
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MODULE_DESCRIPTION("Shared library for Atheros wireless 802.11n LAN cards.");
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MODULE_LICENSE("Dual BSD/GPL");
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2010-03-17 15:55:25 +07:00
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int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb)
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{
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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if (tx_info->control.hw_key) {
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2010-08-10 14:46:38 +07:00
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switch (tx_info->control.hw_key->cipher) {
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case WLAN_CIPHER_SUITE_WEP40:
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case WLAN_CIPHER_SUITE_WEP104:
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2010-03-17 15:55:25 +07:00
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return ATH9K_KEY_TYPE_WEP;
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2010-08-10 14:46:38 +07:00
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case WLAN_CIPHER_SUITE_TKIP:
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2010-03-17 15:55:25 +07:00
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return ATH9K_KEY_TYPE_TKIP;
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2010-08-10 14:46:38 +07:00
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case WLAN_CIPHER_SUITE_CCMP:
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2010-03-17 15:55:25 +07:00
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return ATH9K_KEY_TYPE_AES;
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2010-08-10 14:46:38 +07:00
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default:
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break;
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}
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2010-03-17 15:55:25 +07:00
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}
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return ATH9K_KEY_TYPE_CLEAR;
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}
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EXPORT_SYMBOL(ath9k_cmn_get_hw_crypto_keytype);
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/*
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* Update internal channel flags.
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*/
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2013-10-12 04:30:57 +07:00
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static void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
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struct cfg80211_chan_def *chandef)
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2010-03-17 15:55:25 +07:00
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{
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2013-10-12 04:30:56 +07:00
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struct ieee80211_channel *chan = chandef->chan;
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u16 flags = 0;
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ichan->channel = chan->center_freq;
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ichan->chan = chan;
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if (chan->band == IEEE80211_BAND_5GHZ)
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flags |= CHANNEL_5GHZ;
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2010-03-17 15:55:25 +07:00
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2013-08-16 15:46:04 +07:00
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switch (chandef->width) {
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case NL80211_CHAN_WIDTH_5:
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2013-10-12 04:30:56 +07:00
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flags |= CHANNEL_QUARTER;
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2013-08-16 15:46:04 +07:00
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break;
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case NL80211_CHAN_WIDTH_10:
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2013-10-12 04:30:56 +07:00
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flags |= CHANNEL_HALF;
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2013-08-16 15:46:04 +07:00
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break;
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case NL80211_CHAN_WIDTH_20_NOHT:
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break;
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case NL80211_CHAN_WIDTH_20:
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2013-10-12 04:30:56 +07:00
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flags |= CHANNEL_HT;
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break;
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2013-08-16 15:46:04 +07:00
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case NL80211_CHAN_WIDTH_40:
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2013-10-12 04:30:56 +07:00
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if (chandef->center_freq1 > chandef->chan->center_freq)
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flags |= CHANNEL_HT40PLUS | CHANNEL_HT;
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else
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flags |= CHANNEL_HT40MINUS | CHANNEL_HT;
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2013-08-16 15:46:04 +07:00
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break;
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default:
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WARN_ON(1);
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}
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2013-10-12 04:30:56 +07:00
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ichan->channelFlags = flags;
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2010-03-17 15:55:25 +07:00
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}
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/*
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* Get the internal channel reference.
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*/
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2013-10-12 04:30:57 +07:00
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struct ath9k_channel *ath9k_cmn_get_channel(struct ieee80211_hw *hw,
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struct ath_hw *ah,
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struct cfg80211_chan_def *chandef)
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2010-03-17 15:55:25 +07:00
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{
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2013-10-12 04:30:57 +07:00
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struct ieee80211_channel *curchan = chandef->chan;
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2010-03-17 15:55:25 +07:00
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struct ath9k_channel *channel;
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2013-12-15 00:03:35 +07:00
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channel = &ah->channels[curchan->hw_value];
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2013-10-12 04:30:57 +07:00
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ath9k_cmn_update_ichannel(channel, chandef);
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2010-03-17 15:55:25 +07:00
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return channel;
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}
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2013-10-12 04:30:57 +07:00
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EXPORT_SYMBOL(ath9k_cmn_get_channel);
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2010-03-17 15:55:25 +07:00
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2010-06-02 17:23:37 +07:00
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int ath9k_cmn_count_streams(unsigned int chainmask, int max)
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{
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int streams = 0;
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do {
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if (++streams == max)
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break;
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} while ((chainmask = chainmask & (chainmask - 1)));
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return streams;
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}
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EXPORT_SYMBOL(ath9k_cmn_count_streams);
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2011-02-01 01:17:44 +07:00
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void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
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u16 new_txpow, u16 *txpower)
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{
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2011-10-09 01:06:20 +07:00
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struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
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if (reg->power_limit != new_txpow) {
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2011-02-01 01:17:44 +07:00
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ath9k_hw_set_txpowerlimit(ah, new_txpow, false);
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/* read back in case value is clamped */
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2011-10-09 01:06:20 +07:00
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*txpower = reg->max_power_level;
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2011-02-01 01:17:44 +07:00
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}
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}
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EXPORT_SYMBOL(ath9k_cmn_update_txpow);
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2011-08-13 11:58:15 +07:00
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void ath9k_cmn_init_crypto(struct ath_hw *ah)
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{
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struct ath_common *common = ath9k_hw_common(ah);
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int i = 0;
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/* Get the hardware key cache size. */
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common->keymax = AR_KEYTABLE_SIZE;
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/*
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* Check whether the separate key cache entries
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* are required to handle both tx+rx MIC keys.
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* With split mic keys the number of stations is limited
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* to 27 otherwise 59.
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*/
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if (ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
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common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
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/*
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* Reset the key cache since some parts do not
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* reset the contents on initial power up.
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*/
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for (i = 0; i < common->keymax; i++)
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ath_hw_keyreset(common, (u16) i);
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}
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EXPORT_SYMBOL(ath9k_cmn_init_crypto);
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2009-11-05 23:44:39 +07:00
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static int __init ath9k_cmn_init(void)
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{
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return 0;
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}
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module_init(ath9k_cmn_init);
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static void __exit ath9k_cmn_exit(void)
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{
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return;
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}
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module_exit(ath9k_cmn_exit);
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