diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/pcu.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/pcu.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/drivers/net/wireless/ath/ath5k/pcu.c b/drivers/net/wireless/ath/ath5k/pcu.c index bb2e21553d1..6a891c4484a 100644 --- a/drivers/net/wireless/ath/ath5k/pcu.c +++ b/drivers/net/wireless/ath/ath5k/pcu.c @@ -640,197 +640,6 @@ void ath5k_hw_init_beacon(struct ath5k_hw *ah, u32 next_beacon, u32 interval) } - -/*********************\ -* Key table functions * -\*********************/ - -/* - * Reset a key entry on the table - */ -int ath5k_hw_reset_key(struct ath5k_hw *ah, u16 entry) -{ - unsigned int i, type; - u16 micentry = entry + AR5K_KEYTABLE_MIC_OFFSET; - - AR5K_ASSERT_ENTRY(entry, AR5K_KEYTABLE_SIZE); - - type = ath5k_hw_reg_read(ah, AR5K_KEYTABLE_TYPE(entry)); - - for (i = 0; i < AR5K_KEYCACHE_SIZE; i++) - ath5k_hw_reg_write(ah, 0, AR5K_KEYTABLE_OFF(entry, i)); - - /* Reset associated MIC entry if TKIP - * is enabled located at offset (entry + 64) */ - if (type == AR5K_KEYTABLE_TYPE_TKIP) { - AR5K_ASSERT_ENTRY(micentry, AR5K_KEYTABLE_SIZE); - for (i = 0; i < AR5K_KEYCACHE_SIZE / 2 ; i++) - ath5k_hw_reg_write(ah, 0, - AR5K_KEYTABLE_OFF(micentry, i)); - } - - /* - * Set NULL encryption on AR5212+ - * - * Note: AR5K_KEYTABLE_TYPE -> AR5K_KEYTABLE_OFF(entry, 5) - * AR5K_KEYTABLE_TYPE_NULL -> 0x00000007 - * - * Note2: Windows driver (ndiswrapper) sets this to - * 0x00000714 instead of 0x00000007 - */ - if (ah->ah_version >= AR5K_AR5211) { - ath5k_hw_reg_write(ah, AR5K_KEYTABLE_TYPE_NULL, - AR5K_KEYTABLE_TYPE(entry)); - - if (type == AR5K_KEYTABLE_TYPE_TKIP) { - ath5k_hw_reg_write(ah, AR5K_KEYTABLE_TYPE_NULL, - AR5K_KEYTABLE_TYPE(micentry)); - } - } - - return 0; -} - -static -int ath5k_keycache_type(const struct ieee80211_key_conf *key) -{ - switch (key->cipher) { - case WLAN_CIPHER_SUITE_TKIP: - return AR5K_KEYTABLE_TYPE_TKIP; - case WLAN_CIPHER_SUITE_CCMP: - return AR5K_KEYTABLE_TYPE_CCM; - case WLAN_CIPHER_SUITE_WEP40: - return AR5K_KEYTABLE_TYPE_40; - case WLAN_CIPHER_SUITE_WEP104: - return AR5K_KEYTABLE_TYPE_104; - default: - return -EINVAL; - } -} - -/* - * Set a key entry on the table - */ -int ath5k_hw_set_key(struct ath5k_hw *ah, u16 entry, - const struct ieee80211_key_conf *key, const u8 *mac) -{ - unsigned int i; - int keylen; - __le32 key_v[5] = {}; - __le32 key0 = 0, key1 = 0; - __le32 *rxmic, *txmic; - int keytype; - u16 micentry = entry + AR5K_KEYTABLE_MIC_OFFSET; - bool is_tkip; - const u8 *key_ptr; - - is_tkip = (key->cipher == WLAN_CIPHER_SUITE_TKIP); - - /* - * key->keylen comes in from mac80211 in bytes. - * TKIP is 128 bit + 128 bit mic - */ - keylen = (is_tkip) ? (128 / 8) : key->keylen; - - if (entry > AR5K_KEYTABLE_SIZE || - (is_tkip && micentry > AR5K_KEYTABLE_SIZE)) - return -EOPNOTSUPP; - - if (unlikely(keylen > 16)) - return -EOPNOTSUPP; - - keytype = ath5k_keycache_type(key); - if (keytype < 0) - return keytype; - - /* - * each key block is 6 bytes wide, written as pairs of - * alternating 32 and 16 bit le values. - */ - key_ptr = key->key; - for (i = 0; keylen >= 6; keylen -= 6) { - memcpy(&key_v[i], key_ptr, 6); - i += 2; - key_ptr += 6; - } - if (keylen) - memcpy(&key_v[i], key_ptr, keylen); - - /* intentionally corrupt key until mic is installed */ - if (is_tkip) { - key0 = key_v[0] = ~key_v[0]; - key1 = key_v[1] = ~key_v[1]; - } - - for (i = 0; i < ARRAY_SIZE(key_v); i++) - ath5k_hw_reg_write(ah, le32_to_cpu(key_v[i]), - AR5K_KEYTABLE_OFF(entry, i)); - - ath5k_hw_reg_write(ah, keytype, AR5K_KEYTABLE_TYPE(entry)); - - if (is_tkip) { - /* Install rx/tx MIC */ - rxmic = (__le32 *) &key->key[16]; - txmic = (__le32 *) &key->key[24]; - - if (ah->ah_combined_mic) { - key_v[0] = rxmic[0]; - key_v[1] = cpu_to_le32(le32_to_cpu(txmic[0]) >> 16); - key_v[2] = rxmic[1]; - key_v[3] = cpu_to_le32(le32_to_cpu(txmic[0]) & 0xffff); - key_v[4] = txmic[1]; - } else { - key_v[0] = rxmic[0]; - key_v[1] = 0; - key_v[2] = rxmic[1]; - key_v[3] = 0; - key_v[4] = 0; - } - for (i = 0; i < ARRAY_SIZE(key_v); i++) - ath5k_hw_reg_write(ah, le32_to_cpu(key_v[i]), - AR5K_KEYTABLE_OFF(micentry, i)); - - ath5k_hw_reg_write(ah, AR5K_KEYTABLE_TYPE_NULL, - AR5K_KEYTABLE_TYPE(micentry)); - ath5k_hw_reg_write(ah, 0, AR5K_KEYTABLE_MAC0(micentry)); - ath5k_hw_reg_write(ah, 0, AR5K_KEYTABLE_MAC1(micentry)); - - /* restore first 2 words of key */ - ath5k_hw_reg_write(ah, le32_to_cpu(~key0), - AR5K_KEYTABLE_OFF(entry, 0)); - ath5k_hw_reg_write(ah, le32_to_cpu(~key1), - AR5K_KEYTABLE_OFF(entry, 1)); - } - - return ath5k_hw_set_key_lladdr(ah, entry, mac); -} - -int ath5k_hw_set_key_lladdr(struct ath5k_hw *ah, u16 entry, const u8 *mac) -{ - u32 low_id, high_id; - - /* Invalid entry (key table overflow) */ - AR5K_ASSERT_ENTRY(entry, AR5K_KEYTABLE_SIZE); - - /* - * MAC may be NULL if it's a broadcast key. In this case no need to - * to compute get_unaligned_le32 and get_unaligned_le16 as we - * already know it. - */ - if (!mac) { - low_id = 0xffffffff; - high_id = 0xffff | AR5K_KEYTABLE_VALID; - } else { - low_id = get_unaligned_le32(mac); - high_id = get_unaligned_le16(mac + 4) | AR5K_KEYTABLE_VALID; - } - - ath5k_hw_reg_write(ah, low_id, AR5K_KEYTABLE_MAC0(entry)); - ath5k_hw_reg_write(ah, high_id, AR5K_KEYTABLE_MAC1(entry)); - - return 0; -} - /** * ath5k_hw_set_coverage_class - Set IEEE 802.11 coverage class * |