ath9k: Add channel context structure
The channel context structure is defined to enable
multi-channel concurrency support.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 62ac95d..2e7cce7 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -233,7 +233,7 @@
ath9k_hw_set_interrupts(ah);
ath9k_hw_enable_interrupts(ah);
- if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && start) {
+ if (!sc->cur_chan->offchannel && start) {
if (!test_bit(ATH_OP_BEACONS, &common->op_flags))
goto work;
@@ -266,7 +266,7 @@
return true;
}
-static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan)
+int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
@@ -279,7 +279,7 @@
tasklet_disable(&sc->intr_tq);
spin_lock_bh(&sc->sc_pcu_lock);
- if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) {
+ if (!sc->cur_chan->offchannel) {
fastcc = false;
caldata = &sc->caldata;
}
@@ -307,7 +307,7 @@
}
if (ath9k_hw_mci_is_enabled(sc->sc_ah) &&
- (sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL))
+ sc->cur_chan->offchannel)
ath9k_mci_set_txpower(sc, true, false);
if (!ath_complete_reset(sc, true))
@@ -320,98 +320,6 @@
return r;
}
-
-/*
- * Set/change channels. If the channel is really being changed, it's done
- * by reseting the chip. To accomplish this we must first cleanup any pending
- * DMA, then restart stuff.
-*/
-static int ath_set_channel(struct ath_softc *sc, struct cfg80211_chan_def *chandef)
-{
- struct ath_hw *ah = sc->sc_ah;
- struct ath_common *common = ath9k_hw_common(ah);
- struct ieee80211_hw *hw = sc->hw;
- struct ath9k_channel *hchan;
- struct ieee80211_channel *chan = chandef->chan;
- bool offchannel;
- int pos = chan->hw_value;
- int old_pos = -1;
- int r;
-
- if (test_bit(ATH_OP_INVALID, &common->op_flags))
- return -EIO;
-
- offchannel = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL);
-
- if (ah->curchan)
- old_pos = ah->curchan - &ah->channels[0];
-
- ath_dbg(common, CONFIG, "Set channel: %d MHz width: %d\n",
- chan->center_freq, chandef->width);
-
- /* update survey stats for the old channel before switching */
- spin_lock_bh(&common->cc_lock);
- ath_update_survey_stats(sc);
- spin_unlock_bh(&common->cc_lock);
-
- ath9k_cmn_get_channel(hw, ah, chandef);
-
- /*
- * If the operating channel changes, change the survey in-use flags
- * along with it.
- * Reset the survey data for the new channel, unless we're switching
- * back to the operating channel from an off-channel operation.
- */
- if (!offchannel && sc->cur_survey != &sc->survey[pos]) {
- if (sc->cur_survey)
- sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
-
- sc->cur_survey = &sc->survey[pos];
-
- memset(sc->cur_survey, 0, sizeof(struct survey_info));
- sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
- } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
- memset(&sc->survey[pos], 0, sizeof(struct survey_info));
- }
-
- hchan = &sc->sc_ah->channels[pos];
- r = ath_reset_internal(sc, hchan);
- if (r)
- return r;
-
- /*
- * The most recent snapshot of channel->noisefloor for the old
- * channel is only available after the hardware reset. Copy it to
- * the survey stats now.
- */
- if (old_pos >= 0)
- ath_update_survey_nf(sc, old_pos);
-
- /*
- * Enable radar pulse detection if on a DFS channel. Spectral
- * scanning and radar detection can not be used concurrently.
- */
- if (hw->conf.radar_enabled) {
- u32 rxfilter;
-
- /* set HW specific DFS configuration */
- ath9k_hw_set_radar_params(ah);
- rxfilter = ath9k_hw_getrxfilter(ah);
- rxfilter |= ATH9K_RX_FILTER_PHYRADAR |
- ATH9K_RX_FILTER_PHYERR;
- ath9k_hw_setrxfilter(ah, rxfilter);
- ath_dbg(common, DFS, "DFS enabled at freq %d\n",
- chan->center_freq);
- } else {
- /* perform spectral scan if requested. */
- if (test_bit(ATH_OP_SCANNING, &common->op_flags) &&
- sc->spectral_mode == SPECTRAL_CHANSCAN)
- ath9k_spectral_scan_trigger(hw);
- }
-
- return 0;
-}
-
static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
struct ieee80211_vif *vif)
{
@@ -713,6 +621,7 @@
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *curchan = hw->conf.chandef.chan;
+ struct ath_chanctx *ctx = sc->cur_chan;
struct ath9k_channel *init_channel;
int r;
@@ -723,7 +632,8 @@
ath9k_ps_wakeup(sc);
mutex_lock(&sc->mutex);
- init_channel = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef);
+ memcpy(&ctx->chandef, &hw->conf.chandef, sizeof(ctx->chandef));
+ init_channel = ath9k_cmn_get_channel(hw, ah, &ctx->chandef);
/* Reset SERDES registers */
ath9k_hw_configpcipowersave(ah, false);
@@ -934,7 +844,8 @@
}
if (!ah->curchan)
- ah->curchan = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef);
+ ah->curchan = ath9k_cmn_get_channel(hw, ah,
+ &sc->cur_chan->chandef);
ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
ath9k_hw_phy_disable(ah);
@@ -1345,6 +1256,7 @@
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_conf *conf = &hw->conf;
+ struct ath_chanctx *ctx = sc->cur_chan;
bool reset_channel = false;
ath9k_ps_wakeup(sc);
@@ -1392,7 +1304,8 @@
}
if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
- if (ath_set_channel(sc, &hw->conf.chandef) < 0) {
+ ctx->offchannel = !!(conf->flags & IEEE80211_CONF_OFFCHANNEL);
+ if (ath_chanctx_set_channel(sc, ctx, &hw->conf.chandef) < 0) {
ath_err(common, "Unable to set channel\n");
mutex_unlock(&sc->mutex);
ath9k_ps_restore(sc);