carl9170 firmware: Support multiple CAB queues
[carl9170fw.git] / carlfw / src / wlan.c
index d0adb5964dfcd999e1e8ac1d8a80ee5187234f1a..367dfabe0cfbd19ebd353c437a20ac76ee65efb2 100644 (file)
@@ -357,7 +357,7 @@ static bool wlan_tx_status(struct dma_queue *queue,
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
        if (unlikely(super->s.cab))
-               fw.wlan.cab_queue_len--;
+               fw.wlan.cab_queue_len[super->s.vif_id]--;
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 
        /* recycle freed descriptors */
@@ -407,8 +407,8 @@ void __hot wlan_tx(struct dma_desc *desc)
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
        if (unlikely(super->s.cab)) {
-               fw.wlan.cab_queue_len++;
-               dma_put(&fw.wlan.cab_queue, desc);
+               fw.wlan.cab_queue_len[super->s.vif_id]++;
+               dma_put(&fw.wlan.cab_queue[super->s.vif_id], desc);
                return;
        }
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
@@ -562,6 +562,11 @@ static void wlan_check_rx_overrun(void)
        fw.wlan.rx_overruns += overruns = get(AR9170_MAC_REG_RX_OVERRUN);
        if (unlikely(overruns)) {
                if (overruns == total) {
+                       /*
+                        * Theoretically, it should be enough to
+                        * trigger the WLAN RX DMA bit. But the
+                        * original firmware wanted a reset...
+                        */
                        DBG("RX Overrun");
                        fw.wlan.mac_reset++;
                }
@@ -572,8 +577,6 @@ static void handle_rx(void)
 {
        struct dma_desc *desc;
 
-       wlan_check_rx_overrun();
-
        for_each_desc_not_bits(desc, &fw.wlan.rx_queue, AR9170_OWN_BITS_HW) {
                if (unlikely(desc->totalLen < 26 ||
                    desc->totalLen > CONFIG_CARL9170FW_RX_FRAME_LEN)) {
@@ -595,6 +598,36 @@ static void handle_rx(void)
 }
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
+void wlan_cab_flush_queue(const unsigned int vif)
+{
+       struct dma_queue *cab_queue = &fw.wlan.cab_queue[vif];
+       struct dma_desc *desc;
+
+       /* move queued frames into the main tx queues */
+       for_each_desc(desc, cab_queue) {
+               struct carl9170_tx_superframe *super = get_super(desc);
+               if (!queue_empty(cab_queue)) {
+                       /*
+                        * Set MOREDATA flag for all,
+                        * but the last queued frame.
+                        * see: 802.11-2007 11.2.1.5 f)
+                        *
+                        * This is actually the reason to why
+                        * we need to prevent the reentry.
+                        */
+
+                       super->f.data.i3e.frame_control |=
+                               cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+               } else {
+                       super->f.data.i3e.frame_control &=
+                               cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
+               }
+
+               /* ready to roll! */
+               _wlan_tx(desc);
+       }
+}
+
 static uint8_t *beacon_find_ie(uint8_t ie)
 {
        struct ieee80211_mgmt *mgmt = getp(AR9170_MAC_REG_BCN_ADDR);
@@ -621,60 +654,7 @@ static uint8_t *beacon_find_ie(uint8_t ie)
        return NULL;
 }
 
-static void wlan_cab_flush_queue(void)
-{
-       struct dma_desc *desc;
-       uint8_t *_ie;
-       struct ieee80211_tim_ie *ie;
-
-       /*
-        * This prevents the code from sending new BC/MC frames
-        * which were queued after the previous buffered traffic
-        * has been sent out... They will have to wait until the
-        * next DTIM beacon comes along.
-        */
-       if (unlikely(fw.wlan.cab_flush_trigger == CARL9170_CAB_TRIGGER_DEFER))
-               return ;
-
-       _ie = beacon_find_ie(WLAN_EID_TIM);
-       if (unlikely(!_ie))
-               return ;
-
-       ie = (struct ieee80211_tim_ie *) &_ie[2];
-
-       /* Ideally, check here for == AR9170_CAB_TRIGGER_ARMED */
-       if (fw.wlan.cab_flush_trigger) {
-               /* move queued frames into the main tx queues */
-               for_each_desc(desc, &fw.wlan.cab_queue) {
-                       struct carl9170_tx_superframe *super = get_super(desc);
-
-                       if (!queue_empty(&fw.wlan.cab_queue)) {
-                               /*
-                                * Set MOREDATA flag for all,
-                                * but the last queued frame.
-                                * see: 802.11-2007 11.2.1.5 f)
-                                *
-                                * This is actually the reason to why
-                                * we need to prevent the reentry.
-                                */
-
-                               super->f.data.i3e.frame_control |=
-                                       cpu_to_le16(IEEE80211_FCTL_MOREDATA);
-                       } else {
-                               super->f.data.i3e.frame_control &=
-                                       cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
-                       }
-
-                       /* ready to roll! */
-                       _wlan_tx(desc);
-               }
-       }
-
-       /* Transfer finished - waiting for tx status */
-       fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_DEFER;
-}
-
-static void wlan_cab_modify_dtim_beacon(void)
+void wlan_cab_modify_dtim_beacon(const unsigned int vif)
 {
        uint8_t *_ie;
        struct ieee80211_tim_ie *ie;
@@ -682,16 +662,18 @@ static void wlan_cab_modify_dtim_beacon(void)
        _ie = beacon_find_ie(WLAN_EID_TIM);
        if (likely(_ie)) {
                ie = (struct ieee80211_tim_ie *) &_ie[2];
+               fw.wlan.cab_flush_vif = vif;
 
-               if (!queue_empty(&fw.wlan.cab_queue) && (ie->dtim_count == 0)) {
+               if (!queue_empty(&fw.wlan.cab_queue[vif]) && (ie->dtim_count == 0)) {
                        /* schedule DTIM transfer */
                        fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_ARMED;
-               } else if ((fw.wlan.cab_queue_len == 0) && (fw.wlan.cab_flush_trigger)) {
+               } else if ((fw.wlan.cab_queue_len[vif] == 0) && (fw.wlan.cab_flush_trigger)) {
                        /* undo all chances to the beacon structure */
                        ie->bitmap_ctrl &= ~0x1;
                        fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_EMPTY;
                }
 
+               /* Triggered by CARL9170_CAB_TRIGGER_ARMED || CARL9170_CAB_TRIGGER_DEFER */
                if (fw.wlan.cab_flush_trigger) {
                        /* Set the almighty Multicast Traffic Indication Bit. */
                        ie->bitmap_ctrl |= 0x1;
@@ -704,16 +686,6 @@ static void handle_beacon_config(void)
 {
        uint32_t bcn_count;
 
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
-       /*
-        * The application has now updated the relevant beacon data.
-        * Now it should be the perfect time to apply the DTIM
-        * multicast information.
-        */
-
-       wlan_cab_modify_dtim_beacon();
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
        bcn_count = get(AR9170_MAC_REG_BCN_COUNT);
        send_cmd_to_host(4, CARL9170_RSP_BEACON_CONFIG, 0x00,
                         (uint8_t *) &bcn_count);
@@ -733,7 +705,6 @@ static void handle_pretbtt(void)
 #else
        send_cmd_to_host(0, CARL9170_RSP_PRETBTT, 0x00, NULL);
 #endif /* CONFIG_CARL9170FW_PSM */
-
 }
 
 static void handle_atim(void)
@@ -760,7 +731,7 @@ static void handle_radar(void)
 static void wlan_janitor(void)
 {
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
-       if (unlikely(fw.wlan.cab_flush_trigger)) {
+       if (unlikely(fw.wlan.cab_flush_trigger == CARL9170_CAB_TRIGGER_ARMED)) {
                /*
                 * This is hardcoded into carl9170usb driver.
                 *
@@ -771,9 +742,16 @@ static void wlan_janitor(void)
                 * 11.2.1.6. Let's hope the current solution is adequate enough.
                 */
 
-               if (is_after_msecs(fw.wlan.cab_flush_time,
-                   (CARL9170_TBTT_DELTA))) {
-                       wlan_cab_flush_queue();
+               if (is_after_msecs(fw.wlan.cab_flush_time, (CARL9170_TBTT_DELTA))) {
+                       wlan_cab_flush_queue(fw.wlan.cab_flush_vif);
+
+                       /*
+                        * This prevents the code from sending new BC/MC frames
+                        * which were queued after the previous buffered traffic
+                        * has been sent out... They will have to wait until the
+                        * next DTIM beacon comes along.
+                        */
+                       fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_DEFER;
                }
        }
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
@@ -939,7 +917,7 @@ static void wlan_mac_reset(void)
        uint32_t rx_BB;
 #endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
 
-       ERR("MAC RESET");
+       INFO("MAC RESET");
 
        /* Save aggregation parameters */
        agg_wait_counter = get(AR9170_MAC_REG_AMPDU_FACTOR);