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authorFelix Fietkau <nbd@openwrt.org>2010-04-19 19:57:36 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-04-20 11:52:36 -0400
commit074a8c0db255e79960593122b5458c9a9c0551fa (patch)
tree7d1beb94abbca5fdd6b6e1c39e1d482be51cff5a /drivers
parentf79d9bad37cb1e7ef23d60b1dd0b7859957ced9e (diff)
ath9k: add support for Tx and Rx STBC
Supported only for single stream rates by the hardware Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/ath/ath9k/init.c6
-rw-r--r--drivers/net/wireless/ath/ath9k/mac.h8
-rw-r--r--drivers/net/wireless/ath/ath9k/xmit.c2
3 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 351538cd8e4c..70e5aa415c89 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -214,6 +214,12 @@ static void setup_ht_cap(struct ath_softc *sc,
else
max_streams = 2;
+ if (AR_SREV_9280_10_OR_LATER(ah)) {
+ if (max_streams >= 2)
+ ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
+ ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
+ }
+
/* set up supported mcs set */
memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
tx_streams = count_streams(common->tx_chainmask, max_streams);
diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h
index 66d0d5e56149..00f3e0c7528a 100644
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -37,6 +37,8 @@
AR_2040_##_index : 0) \
|((_series)[_index].RateFlags & ATH9K_RATESERIES_HALFGI ? \
AR_GI##_index : 0) \
+ |((_series)[_index].RateFlags & ATH9K_RATESERIES_STBC ? \
+ AR_STBC##_index : 0) \
|SM((_series)[_index].ChSel, AR_ChainSel##_index))
#define CCK_SIFS_TIME 10
@@ -434,7 +436,10 @@ struct ar5416_desc {
#define AR_ChainSel3_S 17
#define AR_RTSCTSRate 0x0ff00000
#define AR_RTSCTSRate_S 20
-#define AR_TxCtlRsvd70 0xf0000000
+#define AR_STBC0 0x10000000
+#define AR_STBC1 0x20000000
+#define AR_STBC2 0x40000000
+#define AR_STBC3 0x80000000
#define AR_TxRSSIAnt00 0x000000ff
#define AR_TxRSSIAnt00_S 0
@@ -647,6 +652,7 @@ enum ath9k_rx_filter {
#define ATH9K_RATESERIES_RTS_CTS 0x0001
#define ATH9K_RATESERIES_2040 0x0002
#define ATH9K_RATESERIES_HALFGI 0x0004
+#define ATH9K_RATESERIES_STBC 0x0008
struct ath9k_11n_rate_series {
u32 Tries;
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 2237658144e6..b0d345a675fe 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1607,6 +1607,8 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
series[i].Rate = rix | 0x80;
series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
is_40, is_sgi, is_sp);
+ if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC))
+ series[i].RateFlags |= ATH9K_RATESERIES_STBC;
continue;
}