+commit 065e0b64f71632f5ad7f00c102fde09c534cfbf0
+Author: Felix Fietkau <nbd@openwrt.org>
+Date: Tue Sep 30 11:00:33 2014 +0200
+
+ ath9k: fix getting tx duration for dynack
+
+ On AR9003, tx control and tx status are in separate descriptor rings.
+ Tx duration is extracted from the tx control descriptor data, which
+ ar9003_hw_proc_txdesc cannot access.
+
+ Fix getting the duration by adding a separate callback for it.
+
+ Acked-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
+ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
commit fdf9a4517b60d847b9bc0a30249efd96559fa450
Author: Felix Fietkau <nbd@openwrt.org>
Date: Tue Sep 9 09:48:30 2014 +0200
priv_ops->set_channel_regs = ar9003_hw_set_channel_regs;
priv_ops->init_bb = ar9003_hw_init_bb;
priv_ops->process_ini = ar9003_hw_process_ini;
+--- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
+@@ -381,16 +381,27 @@ static int ar9002_hw_proc_txdesc(struct
+ ts->evm1 = ads->AR_TxEVM1;
+ ts->evm2 = ads->AR_TxEVM2;
+
+- status = ACCESS_ONCE(ads->ds_ctl4);
+- ts->duration[0] = MS(status, AR_PacketDur0);
+- ts->duration[1] = MS(status, AR_PacketDur1);
+- status = ACCESS_ONCE(ads->ds_ctl5);
+- ts->duration[2] = MS(status, AR_PacketDur2);
+- ts->duration[3] = MS(status, AR_PacketDur3);
+-
+ return 0;
+ }
+
++static int ar9002_hw_get_duration(struct ath_hw *ah, const void *ds, int index)
++{
++ struct ar5416_desc *ads = AR5416DESC(ds);
++
++ switch (index) {
++ case 0:
++ return MS(ACCESS_ONCE(ads->ds_ctl4), AR_PacketDur0);
++ case 1:
++ return MS(ACCESS_ONCE(ads->ds_ctl4), AR_PacketDur1);
++ case 2:
++ return MS(ACCESS_ONCE(ads->ds_ctl5), AR_PacketDur2);
++ case 3:
++ return MS(ACCESS_ONCE(ads->ds_ctl5), AR_PacketDur3);
++ default:
++ return -1;
++ }
++}
++
+ void ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
+ u32 size, u32 flags)
+ {
+@@ -413,4 +424,5 @@ void ar9002_hw_attach_mac_ops(struct ath
+ ops->get_isr = ar9002_hw_get_isr;
+ ops->set_txdesc = ar9002_set_txdesc;
+ ops->proc_txdesc = ar9002_hw_proc_txdesc;
++ ops->get_duration = ar9002_hw_get_duration;
+ }
+--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+@@ -355,11 +355,9 @@ static int ar9003_hw_proc_txdesc(struct
+ struct ath_tx_status *ts)
+ {
+ struct ar9003_txs *ads;
+- struct ar9003_txc *adc;
+ u32 status;
+
+ ads = &ah->ts_ring[ah->ts_tail];
+- adc = (struct ar9003_txc *)ads;
+
+ status = ACCESS_ONCE(ads->status8);
+ if ((status & AR_TxDone) == 0)
+@@ -428,18 +426,29 @@ static int ar9003_hw_proc_txdesc(struct
+ ts->ts_rssi_ext1 = MS(status, AR_TxRSSIAnt11);
+ ts->ts_rssi_ext2 = MS(status, AR_TxRSSIAnt12);
+
+- status = ACCESS_ONCE(adc->ctl15);
+- ts->duration[0] = MS(status, AR_PacketDur0);
+- ts->duration[1] = MS(status, AR_PacketDur1);
+- status = ACCESS_ONCE(adc->ctl16);
+- ts->duration[2] = MS(status, AR_PacketDur2);
+- ts->duration[3] = MS(status, AR_PacketDur3);
+-
+ memset(ads, 0, sizeof(*ads));
+
+ return 0;
+ }
+
++static int ar9003_hw_get_duration(struct ath_hw *ah, const void *ds, int index)
++{
++ const struct ar9003_txc *adc = ds;
++
++ switch (index) {
++ case 0:
++ return MS(ACCESS_ONCE(adc->ctl15), AR_PacketDur0);
++ case 1:
++ return MS(ACCESS_ONCE(adc->ctl15), AR_PacketDur1);
++ case 2:
++ return MS(ACCESS_ONCE(adc->ctl16), AR_PacketDur2);
++ case 3:
++ return MS(ACCESS_ONCE(adc->ctl16), AR_PacketDur3);
++ default:
++ return 0;
++ }
++}
++
+ void ar9003_hw_attach_mac_ops(struct ath_hw *hw)
+ {
+ struct ath_hw_ops *ops = ath9k_hw_ops(hw);
+@@ -449,6 +458,7 @@ void ar9003_hw_attach_mac_ops(struct ath
+ ops->get_isr = ar9003_hw_get_isr;
+ ops->set_txdesc = ar9003_set_txdesc;
+ ops->proc_txdesc = ar9003_hw_proc_txdesc;
++ ops->get_duration = ar9003_hw_get_duration;
+ }
+
+ void ath9k_hw_set_rx_bufsize(struct ath_hw *ah, u16 buf_size)
+--- a/drivers/net/wireless/ath/ath9k/dynack.c
++++ b/drivers/net/wireless/ath/ath9k/dynack.c
+@@ -202,7 +202,7 @@ void ath_dynack_sample_tx_ts(struct ath_
+ ridx = ts->ts_rateindex;
+
+ da->st_rbf.ts[da->st_rbf.t_rb].tstamp = ts->ts_tstamp;
+- da->st_rbf.ts[da->st_rbf.t_rb].dur = ts->duration[ts->ts_rateindex];
++ da->st_rbf.ts[da->st_rbf.t_rb].dur = ts->duration;
+ ether_addr_copy(da->st_rbf.addr[da->st_rbf.t_rb].h_dest, hdr->addr1);
+ ether_addr_copy(da->st_rbf.addr[da->st_rbf.t_rb].h_src, hdr->addr2);
+
+--- a/drivers/net/wireless/ath/ath9k/hw-ops.h
++++ b/drivers/net/wireless/ath/ath9k/hw-ops.h
+@@ -67,6 +67,12 @@ static inline int ath9k_hw_txprocdesc(st
+ return ath9k_hw_ops(ah)->proc_txdesc(ah, ds, ts);
+ }
+
++static inline int ath9k_hw_get_duration(struct ath_hw *ah, const void *ds,
++ int index)
++{
++ return ath9k_hw_ops(ah)->get_duration(ah, ds, index);
++}
++
+ static inline void ath9k_hw_antdiv_comb_conf_get(struct ath_hw *ah,
+ struct ath_hw_antcomb_conf *antconf)
+ {
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -691,6 +691,7 @@ struct ath_hw_ops {
+ struct ath_tx_info *i);
+ int (*proc_txdesc)(struct ath_hw *ah, void *ds,
+ struct ath_tx_status *ts);
++ int (*get_duration)(struct ath_hw *ah, const void *ds, int index);
+ void (*antdiv_comb_conf_get)(struct ath_hw *ah,
+ struct ath_hw_antcomb_conf *antconf);
+ void (*antdiv_comb_conf_set)(struct ath_hw *ah,
+--- a/drivers/net/wireless/ath/ath9k/mac.h
++++ b/drivers/net/wireless/ath/ath9k/mac.h
+@@ -121,7 +121,7 @@ struct ath_tx_status {
+ u32 evm0;
+ u32 evm1;
+ u32 evm2;
+- u32 duration[4];
++ u32 duration;
+ };
+
+ struct ath_rx_status {
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -683,6 +683,8 @@ static void ath_tx_process_buffer(struct
+ if (bf_is_ampdu_not_probing(bf))
+ txq->axq_ampdu_depth--;
+
++ ts->duration = ath9k_hw_get_duration(sc->sc_ah, bf->bf_desc,
++ ts->ts_rateindex);
+ if (!bf_isampdu(bf)) {
+ if (!flush) {
+ info = IEEE80211_SKB_CB(bf->bf_mpdu);
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