wl1271: implement WMM

Now that necessary commands for WMM are implemented, implement queue handling
for WMM. But WMM is not enabled yet, only one queue is used.

Based on a similar patch from wl1251.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 73 insertions, 4 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index a3742c8052d4..6f7a7d946359 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -1712,6 +1712,36 @@ out:
         mutex_unlock(&wl->mutex);
 }
 
+static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
+                             const struct ieee80211_tx_queue_params *params)
+{
+        struct wl1271 *wl = hw->priv;
+        int ret;
+
+        mutex_lock(&wl->mutex);
+
+        wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
+
+        ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
+                                params->cw_min, params->cw_max,
+                                params->aifs, params->txop);
+        if (ret < 0)
+                goto out;
+
+        ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
+                                 CONF_CHANNEL_TYPE_EDCF,
+                                 wl1271_tx_get_queue(queue),
+                                 CONF_PS_SCHEME_LEGACY_PSPOLL,
+                                 CONF_ACK_POLICY_LEGACY, 0, 0);
+        if (ret < 0)
+                goto out;
+
+out:
+        mutex_unlock(&wl->mutex);
+
+        return ret;
+}
+
 
 /* can't be const, mac80211 writes to this */
 static struct ieee80211_rate wl1271_rates[] = {
@@ -1877,6 +1907,7 @@ static const struct ieee80211_ops wl1271_ops = {
         .hw_scan = wl1271_op_hw_scan,
         .bss_info_changed = wl1271_op_bss_info_changed,
         .set_rts_threshold = wl1271_op_set_rts_threshold,
+        .conf_tx = wl1271_op_conf_tx,
 };
 
 static int wl1271_register_hw(struct wl1271 *wl)
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.c b/drivers/net/wireless/wl12xx/wl1271_tx.c
index a288cc317d7b..f6815a9239e5 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.c
@@ -87,7 +87,7 @@ static int wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
                               u32 extra, struct ieee80211_tx_info *control)
 {
         struct wl1271_tx_hw_descr *desc;
-        int pad;
+        int pad, ac;
         u16 tx_attr;
 
         desc = (struct wl1271_tx_hw_descr *) skb->data;
@@ -107,9 +107,11 @@ static int wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
 
         /* configure the tx attributes */
         tx_attr = wl->session_counter << TX_HW_ATTR_OFST_SESSION_COUNTER;
-        /* FIXME: do we know the packet priority? can we identify mgmt
-           packets, and use max prio for them at least? */
-        desc->tid = 0;
+
+        /* queue */
+        ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
+        desc->tid = wl1271_tx_ac_to_tid(ac);
+
         desc->aid = TX_HW_DEFAULT_AID;
         desc->reserved = 0;
 
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.h b/drivers/net/wireless/wl12xx/wl1271_tx.h
index 416396caf0a0..17e405a09caa 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.h
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.h
@@ -123,6 +123,42 @@ struct wl1271_tx_hw_res_if {
         struct wl1271_tx_hw_res_descr tx_results_queue[TX_HW_RESULT_QUEUE_LEN];
 } __attribute__ ((packed));
 
+static inline int wl1271_tx_get_queue(int queue)
+{
+        /* FIXME: use best effort until WMM is enabled */
+        return CONF_TX_AC_BE;
+
+        switch (queue) {
+        case 0:
+                return CONF_TX_AC_VO;
+        case 1:
+                return CONF_TX_AC_VI;
+        case 2:
+                return CONF_TX_AC_BE;
+        case 3:
+                return CONF_TX_AC_BK;
+        default:
+                return CONF_TX_AC_BE;
+        }
+}
+
+/* wl1271 tx descriptor needs the tid and we need to convert it from ac */
+static inline int wl1271_tx_ac_to_tid(int ac)
+{
+        switch (ac) {
+        case 0:
+                return 0;
+        case 1:
+                return 2;
+        case 2:
+                return 4;
+        case 3:
+                return 6;
+        default:
+                return 0;
+        }
+}
+
 void wl1271_tx_work(struct work_struct *work);
 void wl1271_tx_complete(struct wl1271 *wl, u32 count);
 void wl1271_tx_flush(struct wl1271 *wl);