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rtl8180: add WMM parameters configuration for rtl8187se

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Introduce a new function to configure AC parameters for TX queues
on rtl8187se cards, and hook it onto mac80211 in order to enable
WMM support.

Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Andrea Merello 2014-03-26 21:03:40 +01:00 committed by John W. Linville
parent 833d15ad01
commit e944b0af86
2 changed files with 61 additions and 2 deletions
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62
drivers/net/wireless/rtl818x/rtl8180/dev.c
View file

@ -1090,6 +1090,7 @@ static int rtl8180_start(struct ieee80211_hw *dev)
/* CW is not on per-packet basis.
* in rtl8185 the CW_VALUE reg is used.
* in rtl8187se the AC param regs are used.
*/
reg &= ~RTL818X_CW_CONF_PERPACKET_CW;
/* retry limit IS on per-packet basis.
@ -1279,6 +1280,49 @@ static int rtl8180_config(struct ieee80211_hw *dev, u32 changed)
return 0;
}
static void rtl8187se_conf_ac_parm(struct ieee80211_hw *dev, u8 queue)
{
const struct ieee80211_tx_queue_params *params;
struct rtl8180_priv *priv = dev->priv;
/* hw value */
u32 ac_param;
u8 aifs;
u8 txop;
u8 cw_min, cw_max;
params = &priv->queue_param[queue];
cw_min = fls(params->cw_min);
cw_max = fls(params->cw_max);
aifs = 10 + params->aifs * priv->slot_time;
/* TODO: check if txop HW is in us (mult by 32) */
txop = params->txop;
ac_param = txop << AC_PARAM_TXOP_LIMIT_SHIFT |
cw_max << AC_PARAM_ECW_MAX_SHIFT |
cw_min << AC_PARAM_ECW_MIN_SHIFT |
aifs << AC_PARAM_AIFS_SHIFT;
switch (queue) {
case IEEE80211_AC_BK:
rtl818x_iowrite32(priv, &priv->map->AC_BK_PARAM, ac_param);
break;
case IEEE80211_AC_BE:
rtl818x_iowrite32(priv, &priv->map->AC_BE_PARAM, ac_param);
break;
case IEEE80211_AC_VI:
rtl818x_iowrite32(priv, &priv->map->AC_VI_PARAM, ac_param);
break;
case IEEE80211_AC_VO:
rtl818x_iowrite32(priv, &priv->map->AC_VO_PARAM, ac_param);
break;
}
}
static int rtl8180_conf_tx(struct ieee80211_hw *dev,
struct ieee80211_vif *vif, u16 queue,
const struct ieee80211_tx_queue_params *params)
@ -1293,8 +1337,12 @@ static int rtl8180_conf_tx(struct ieee80211_hw *dev,
cw_min = fls(params->cw_min);
cw_max = fls(params->cw_max);
rtl818x_iowrite8(priv, &priv->map->CW_VAL, (cw_max << 4) | cw_min);
if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
priv->queue_param[queue] = *params;
rtl8187se_conf_ac_parm(dev, queue);
} else
rtl818x_iowrite8(priv, &priv->map->CW_VAL,
(cw_max << 4) | cw_min);
return 0;
}
@ -1396,6 +1444,16 @@ static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
&priv->rates[0])) - 10;
rtl8180_conf_erp(dev, info);
/* mac80211 supplies aifs_n to driver and calls
* conf_tx callback whether aifs_n changes, NOT
* when aifs changes.
* Aifs should be recalculated if slot changes.
*/
if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
for (i = 0; i < 4; i++)
rtl8187se_conf_ac_parm(dev, i);
}
}
if (changed & BSS_CHANGED_BEACON_ENABLED)

1
drivers/net/wireless/rtl818x/rtl8180/rtl8180.h
View file

@ -117,6 +117,7 @@ struct rtl8180_priv {
struct ieee80211_channel channels[14];
struct ieee80211_rate rates[12];
struct ieee80211_supported_band band;
struct ieee80211_tx_queue_params queue_param[4];
struct pci_dev *pdev;
u32 rx_conf;
u8 slot_time;