/*
* Clear the specified key cache entry and any associated MIC entry.
*/
HAL_BOOL
ar5212ResetKeyCacheEntry(struct ath_hal *ah, uint16_t entry)
{
uint32_t keyType;
if (entry >= AH_PRIVATE(ah)->ah_caps.halKeyCacheSize) {
HALDEBUG(ah, HAL_DEBUG_ANY, "%s: entry %u out of range\n",
__func__, entry);
return AH_FALSE;
}
keyType = OS_REG_READ(ah, AR_KEYTABLE_TYPE(entry));
/* XXX why not clear key type/valid bit first? */
OS_REG_WRITE(ah, AR_KEYTABLE_KEY0(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY1(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY2(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY3(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY4(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_TYPE(entry), AR_KEYTABLE_TYPE_CLR);
OS_REG_WRITE(ah, AR_KEYTABLE_MAC0(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_MAC1(entry), 0);
if (keyType == AR_KEYTABLE_TYPE_TKIP && IS_MIC_ENABLED(ah)) {
uint16_t micentry = entry+64; /* MIC goes at slot+64 */
HALASSERT(micentry < AH_PRIVATE(ah)->ah_caps.halKeyCacheSize);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY0(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY1(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY2(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY3(micentry), 0);
/* NB: key type and MAC are known to be ok */
}
return AH_TRUE;
}
/*
* Clear the specified key cache entry and any associated MIC entry.
*/
HAL_BOOL
ar9300_reset_key_cache_entry(struct ath_hal *ah, u_int16_t entry)
{
u_int32_t key_type;
struct ath_hal_9300 *ahp = AH9300(ah);
if (entry >= AH_PRIVATE(ah)->ah_caps.halKeyCacheSize) {
HALDEBUG(ah, HAL_DEBUG_KEYCACHE,
"%s: entry %u out of range\n", __func__, entry);
return AH_FALSE;
}
ahp->ah_keytype[entry] = keyType[HAL_CIPHER_CLR];
key_type = OS_REG_READ(ah, AR_KEYTABLE_TYPE(entry));
/* XXX why not clear key type/valid bit first? */
OS_REG_WRITE(ah, AR_KEYTABLE_KEY0(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY1(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY2(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY3(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY4(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_TYPE(entry), AR_KEYTABLE_TYPE_CLR);
OS_REG_WRITE(ah, AR_KEYTABLE_MAC0(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_MAC1(entry), 0);
if (key_type == AR_KEYTABLE_TYPE_TKIP && IS_MIC_ENABLED(ah)) {
u_int16_t micentry = entry + 64; /* MIC goes at slot+64 */
HALASSERT(micentry < AH_PRIVATE(ah)->ah_caps.halKeyCacheSize);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY0(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY1(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY2(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY3(micentry), 0);
/* NB: key type and MAC are known to be ok */
}
if (AH_PRIVATE(ah)->ah_curchan == AH_NULL) {
return AH_TRUE;
}
if (ar9300_get_capability(ah, HAL_CAP_BB_RIFS_HANG, 0, AH_NULL)
== HAL_OK) {
if (key_type == AR_KEYTABLE_TYPE_TKIP ||
key_type == AR_KEYTABLE_TYPE_40 ||
key_type == AR_KEYTABLE_TYPE_104 ||
key_type == AR_KEYTABLE_TYPE_128) {
/* SW WAR for Bug 31602 */
if (--ahp->ah_rifs_sec_cnt == 0) {
HALDEBUG(ah, HAL_DEBUG_KEYCACHE,
"%s: Count = %d, enabling RIFS\n",
__func__, ahp->ah_rifs_sec_cnt);
ar9300_set_rifs_delay(ah, AH_TRUE);
}
}
}
return AH_TRUE;
}
/*
* Clear the specified key cache entry and any associated MIC entry.
*/
HAL_BOOL
ar5416ResetKeyCacheEntry(struct ath_hal *ah, u_int16_t entry)
{
u_int32_t keyType;
struct ath_hal_5416 *ahp = AH5416(ah);
if (entry >= AH_PRIVATE(ah)->ah_caps.halKeyCacheSize) {
HDPRINTF(ah, HAL_DBG_KEYCACHE, "%s: entry %u out of range\n", __func__, entry);
return AH_FALSE;
}
keyType = OS_REG_READ(ah, AR_KEYTABLE_TYPE(entry));
ENABLE_REG_WRITE_BUFFER
/* XXX why not clear key type/valid bit first? */
OS_REG_WRITE(ah, AR_KEYTABLE_KEY0(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY1(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY2(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY3(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY4(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_TYPE(entry), AR_KEYTABLE_TYPE_CLR);
OS_REG_WRITE(ah, AR_KEYTABLE_MAC0(entry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_MAC1(entry), 0);
if (keyType == AR_KEYTABLE_TYPE_TKIP && IS_MIC_ENABLED(ah)) {
u_int16_t micentry = entry+64; /* MIC goes at slot+64 */
HALASSERT(micentry < AH_PRIVATE(ah)->ah_caps.halKeyCacheSize);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY0(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY1(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY2(micentry), 0);
OS_REG_WRITE(ah, AR_KEYTABLE_KEY3(micentry), 0);
/* NB: key type and MAC are known to be ok */
}
OS_REG_WRITE_FLUSH(ah);
DISABLE_REG_WRITE_BUFFER
if (AH_PRIVATE(ah)->ah_curchan == AH_NULL)
return AH_TRUE;
if (ar5416GetCapability(ah, HAL_CAP_BB_RIFS_HANG, 0, AH_NULL)
== HAL_OK) {
if (keyType == AR_KEYTABLE_TYPE_TKIP ||
keyType == AR_KEYTABLE_TYPE_40 ||
keyType == AR_KEYTABLE_TYPE_104 ||
keyType == AR_KEYTABLE_TYPE_128) {
/* SW WAR for Bug 31602 */
if (--ahp->ah_rifs_sec_cnt == 0) {
HDPRINTF(ah, HAL_DBG_KEYCACHE, "%s: Count = %d, enabling RIFS\n", __func__, ahp->ah_rifs_sec_cnt);
ar5416SetRifsDelay(ah, AH_TRUE);
}
}
}
return AH_TRUE;
}
