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rt2x00: Implement get_survey callback for rt2800

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Implement the get_survey callback to allow user space to read statistics
about the current channel condition.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa
2010-12-13 12:31:58 +01:00
committed by John W. Linville
parent 38c8a566fc
commit 977206d79f
5 changed files with 63 additions and 0 deletions
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49
drivers/net/wireless/rt2x00/rt2800lib.c
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@ -1625,6 +1625,13 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
}
msleep(1);
/*
* Clear channel statistic counters
*/
rt2800_register_read(rt2x00dev, CH_IDLE_STA, &reg);
rt2800_register_read(rt2x00dev, CH_BUSY_STA, &reg);
rt2800_register_read(rt2x00dev, CH_BUSY_STA_SEC, &reg);
}
static void rt2800_config_txpower(struct rt2x00_dev *rt2x00dev,
@ -2259,6 +2266,17 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
rt2x00_set_field32(&reg, INT_TIMER_CFG_PRE_TBTT_TIMER, 6 << 4);
rt2800_register_write(rt2x00dev, INT_TIMER_CFG, reg);
/*
* Set up channel statistics timer
*/
rt2800_register_read(rt2x00dev, CH_TIME_CFG, &reg);
rt2x00_set_field32(&reg, CH_TIME_CFG_EIFS_BUSY, 1);
rt2x00_set_field32(&reg, CH_TIME_CFG_NAV_BUSY, 1);
rt2x00_set_field32(&reg, CH_TIME_CFG_RX_BUSY, 1);
rt2x00_set_field32(&reg, CH_TIME_CFG_TX_BUSY, 1);
rt2x00_set_field32(&reg, CH_TIME_CFG_TMR_EN, 1);
rt2800_register_write(rt2x00dev, CH_TIME_CFG, reg);
return 0;
}
@ -3539,6 +3557,37 @@ int rt2800_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
}
EXPORT_SYMBOL_GPL(rt2800_ampdu_action);
int rt2800_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
u32 idle, busy, busy_ext;
if (idx != 0)
return -ENOENT;
survey->channel = conf->channel;
rt2800_register_read(rt2x00dev, CH_IDLE_STA, &idle);
rt2800_register_read(rt2x00dev, CH_BUSY_STA, &busy);
rt2800_register_read(rt2x00dev, CH_BUSY_STA_SEC, &busy_ext);
if (idle || busy) {
survey->filled = SURVEY_INFO_CHANNEL_TIME |
SURVEY_INFO_CHANNEL_TIME_BUSY |
SURVEY_INFO_CHANNEL_TIME_EXT_BUSY;
survey->channel_time = (idle + busy) / 1000;
survey->channel_time_busy = busy / 1000;
survey->channel_time_ext_busy = busy_ext / 1000;
}
return 0;
}
EXPORT_SYMBOL_GPL(rt2800_get_survey);
MODULE_AUTHOR(DRV_PROJECT ", Bartlomiej Zolnierkiewicz");
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("Ralink RT2800 library");