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fix setting cw values in hardware

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mac80211 passes integer cw_min and cw_max values while hardware
registers should be programmed with the exponent

Signed-off-by: Jakub Kicinski <[email protected]>
This commit is contained in:
Jakub Kicinski
2015-02-01 11:18:40 +01:00
parent a4498bb148
commit 3cbd420a91
1 changed files with 10 additions and 4 deletions
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main.c
+10 -4
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@@ -310,12 +310,18 @@ mt76_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
struct mt76_dev *dev = hw->priv;
u8 cw_min = 5, cw_max = 10;
u32 val;
if (params->cw_min)
cw_min = fls(params->cw_min);
if (params->cw_max)
cw_max = fls(params->cw_max);
val = MT76_SET(MT_EDCA_CFG_TXOP, params->txop) |
MT76_SET(MT_EDCA_CFG_AIFSN, params->aifs) |
MT76_SET(MT_EDCA_CFG_CWMIN, params->cw_min) |
MT76_SET(MT_EDCA_CFG_CWMAX, params->cw_max);
MT76_SET(MT_EDCA_CFG_CWMIN, cw_min) |
MT76_SET(MT_EDCA_CFG_CWMAX, cw_max);
mt76_wr(dev, MT_EDCA_CFG_AC(queue), val);
val = mt76_rr(dev, MT_WMM_TXOP(queue));
@@ -330,12 +336,12 @@ mt76_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
val = mt76_rr(dev, MT_WMM_CWMIN);
val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(queue));
val |= params->cw_min << MT_WMM_CWMIN_SHIFT(queue);
val |= cw_min << MT_WMM_CWMIN_SHIFT(queue);
mt76_wr(dev, MT_WMM_CWMIN, val);
val = mt76_rr(dev, MT_WMM_CWMAX);
val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(queue));
val |= params->cw_max << MT_WMM_CWMAX_SHIFT(queue);
val |= cw_max << MT_WMM_CWMAX_SHIFT(queue);
mt76_wr(dev, MT_WMM_CWMAX, val);
return 0;