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path: root/drivers/net/wireless/ath/wcn36xx/main.c
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Diffstat (limited to 'drivers/net/wireless/ath/wcn36xx/main.c')
-rw-r--r--drivers/net/wireless/ath/wcn36xx/main.c128
1 files changed, 61 insertions, 67 deletions
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index 702b689c06df..103416274bfd 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -354,8 +354,6 @@ static void wcn36xx_stop(struct ieee80211_hw *hw)
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
- cancel_work_sync(&wcn->scan_work);
-
mutex_lock(&wcn->scan_lock);
if (wcn->scan_req) {
struct cfg80211_scan_info scan_info = {
@@ -392,9 +390,24 @@ static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
int ch = WCN36XX_HW_CHANNEL(wcn);
wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
ch);
- list_for_each_entry(tmp, &wcn->vif_list, list) {
- vif = wcn36xx_priv_to_vif(tmp);
- wcn36xx_smd_switch_channel(wcn, vif, ch);
+
+ if (wcn->sw_scan_opchannel == ch) {
+ /* If channel is the initial operating channel, we may
+ * want to receive/transmit regular data packets, then
+ * simply stop the scan session.
+ */
+ wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
+ } else if (wcn->sw_scan) {
+ /* A scan is ongoing, do not change the operating
+ * channel, but start a scan session on the channel.
+ */
+ wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
+ wcn36xx_smd_start_scan(wcn, ch);
+ } else {
+ list_for_each_entry(tmp, &wcn->vif_list, list) {
+ vif = wcn36xx_priv_to_vif(tmp);
+ wcn36xx_smd_switch_channel(wcn, vif, ch);
+ }
}
}
@@ -614,56 +627,27 @@ out:
return ret;
}
-static void wcn36xx_hw_scan_worker(struct work_struct *work)
+static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_scan_request *hw_req)
{
- struct wcn36xx *wcn = container_of(work, struct wcn36xx, scan_work);
- struct cfg80211_scan_request *req = wcn->scan_req;
- u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX];
- struct cfg80211_scan_info scan_info = {};
- bool aborted = false;
+ struct wcn36xx *wcn = hw->priv;
int i;
- wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels);
-
- for (i = 0; i < req->n_channels; i++)
- channels[i] = req->channels[i]->hw_value;
-
- wcn36xx_smd_update_scan_params(wcn, channels, req->n_channels);
-
- wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
- for (i = 0; i < req->n_channels; i++) {
- mutex_lock(&wcn->scan_lock);
- aborted = wcn->scan_aborted;
- mutex_unlock(&wcn->scan_lock);
-
- if (aborted)
- break;
-
- wcn->scan_freq = req->channels[i]->center_freq;
- wcn->scan_band = req->channels[i]->band;
-
- wcn36xx_smd_start_scan(wcn, req->channels[i]->hw_value);
- msleep(30);
- wcn36xx_smd_end_scan(wcn, req->channels[i]->hw_value);
-
- wcn->scan_freq = 0;
+ if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
+ /* fallback to mac80211 software scan */
+ return 1;
}
- wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
- scan_info.aborted = aborted;
- ieee80211_scan_completed(wcn->hw, &scan_info);
+ /* For unknown reason, the hardware offloaded scan only works with
+ * 2.4Ghz channels, fallback to software scan in other cases.
+ */
+ for (i = 0; i < hw_req->req.n_channels; i++) {
+ if (hw_req->req.channels[i]->band != NL80211_BAND_2GHZ)
+ return 1;
+ }
mutex_lock(&wcn->scan_lock);
- wcn->scan_req = NULL;
- mutex_unlock(&wcn->scan_lock);
-}
-
-static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_scan_request *hw_req)
-{
- struct wcn36xx *wcn = hw->priv;
- mutex_lock(&wcn->scan_lock);
if (wcn->scan_req) {
mutex_unlock(&wcn->scan_lock);
return -EBUSY;
@@ -674,12 +658,6 @@ static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
mutex_unlock(&wcn->scan_lock);
- if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
- /* legacy manual/sw scan */
- schedule_work(&wcn->scan_work);
- return 0;
- }
-
return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
}
@@ -696,16 +674,30 @@ static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
/* ieee80211_scan_completed will be called on FW scan
* indication */
wcn36xx_smd_stop_hw_scan(wcn);
- } else {
- struct cfg80211_scan_info scan_info = {
- .aborted = true,
- };
-
- cancel_work_sync(&wcn->scan_work);
- ieee80211_scan_completed(wcn->hw, &scan_info);
}
}
+static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ const u8 *mac_addr)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ wcn->sw_scan = true;
+ wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
+}
+
+static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ /* ensure that any scan session is finished */
+ wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
+ wcn->sw_scan = false;
+ wcn->sw_scan_opchannel = 0;
+}
+
static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
enum nl80211_band band)
{
@@ -1083,6 +1075,7 @@ static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
u16 tid = params->tid;
u16 *ssn = &params->ssn;
int ret = 0;
+ u8 session;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
action, tid);
@@ -1092,10 +1085,11 @@ static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
switch (action) {
case IEEE80211_AMPDU_RX_START:
sta_priv->tid = tid;
- wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
- get_sta_index(vif, sta_priv));
- wcn36xx_smd_add_ba(wcn);
- wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
+ session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
+ get_sta_index(vif, sta_priv));
+ wcn36xx_smd_add_ba(wcn, session);
+ wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid,
+ session);
break;
case IEEE80211_AMPDU_RX_STOP:
wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
@@ -1149,6 +1143,8 @@ static const struct ieee80211_ops wcn36xx_ops = {
.set_key = wcn36xx_set_key,
.hw_scan = wcn36xx_hw_scan,
.cancel_hw_scan = wcn36xx_cancel_hw_scan,
+ .sw_scan_start = wcn36xx_sw_scan_start,
+ .sw_scan_complete = wcn36xx_sw_scan_complete,
.bss_info_changed = wcn36xx_bss_info_changed,
.set_rts_threshold = wcn36xx_set_rts_threshold,
.sta_add = wcn36xx_sta_add,
@@ -1326,8 +1322,6 @@ static int wcn36xx_probe(struct platform_device *pdev)
goto out_wq;
}
- INIT_WORK(&wcn->scan_work, wcn36xx_hw_scan_worker);
-
wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
if (IS_ERR(wcn->smd_channel)) {
wcn36xx_err("failed to open WLAN_CTRL channel\n");
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 11:14:53 +0000