carl9170 firmware: Support multiple CAB queues

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>

diff --git a/carlfw/Kconfig b/carlfw/Kconfig
index c8f3cca38ad6cb2aae0ff652854b5cafcffb66e5..bacb6f29f6c935538d99999f94f18c180fd4eeb7 100644 (file)
--- a/carlfw/Kconfig
+++ b/carlfw/Kconfig
@@ -152,6 +152,12 @@ config CARL9170FW_DELAYED_TX
         Doesn't work 100% yet, but in most cases other HW designs can
         deal with the fallout.
 
         Doesn't work 100% yet, but in most cases other HW designs can
         deal with the fallout.
 

+config CARL9170FW_VIFS_NUM
+       default 0
+       int
+       prompt "Number of additional pseudo virtual interfaces"
+       depends on CARL9170FW_EXPERIMENTAL
+

 config CARL9170FW_BROKEN_FEATURES
        def_bool n
        prompt "Broken Featurs"
 config CARL9170FW_BROKEN_FEATURES
        def_bool n
        prompt "Broken Featurs"


@@ -184,12 +190,6 @@ config CARL9170FW_WATCHDOG_BUTTON
        depends on CARL9170FW_BROKEN && CARL9170FW_WATCHDOG && CARL9170FW_GPIO_INTERRUPT
        prompt "Trigger Watchdog by pressing the WPS button"
 
        depends on CARL9170FW_BROKEN && CARL9170FW_WATCHDOG && CARL9170FW_GPIO_INTERRUPT
        prompt "Trigger Watchdog by pressing the WPS button"
 

-config CARL9170FW_VIFS_NUM
-       default 0
-       int
-       prompt "Number of additional pseudo virtual interfaces"
-       depends on CARL9170FW_BROKEN_FEATURES
-

 choice CARL9170FW_UART_CLOCK
        prompt "UART Clock"
        depends on CARL9170FW_DEBUG_UART
 choice CARL9170FW_UART_CLOCK
        prompt "UART Clock"
        depends on CARL9170FW_DEBUG_UART

diff --git a/carlfw/include/carl9170.h b/carlfw/include/carl9170.h
index 220f2a1e07e51f41ea6494b05d230afc3a490196..6b19303cb15142ff58b1abb517016fb0a8518112 100644 (file)
--- a/carlfw/include/carl9170.h
+++ b/carlfw/include/carl9170.h
@@ -103,9 +103,9 @@ struct firmware_context_struct {
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
                /* CAB */
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
                /* CAB */

-               struct dma_queue cab_queue;
-               unsigned int cab_queue_len,
-                            cab_flush_time;
+               struct dma_queue cab_queue[CARL9170_INTF_NUM];
+               unsigned int cab_queue_len[CARL9170_INTF_NUM];
+               unsigned int cab_flush_time, cab_flush_vif;

                enum carl9170_cab_trigger cab_flush_trigger;
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 
                enum carl9170_cab_trigger cab_flush_trigger;
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 

diff --git a/carlfw/include/dma.h b/carlfw/include/dma.h
index 9913f3a40359ce23ebf393730ab84b38b90b5ae0..91da8651a3366cfb50cbf8aeaeabea102153db85 100644 (file)
--- a/carlfw/include/dma.h
+++ b/carlfw/include/dma.h
@@ -58,7 +58,7 @@ struct dma_desc {
 #endif /* CONFIG_CARL9170FW_DELAYED_TX */
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
 #endif /* CONFIG_CARL9170FW_DELAYED_TX */
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE

-#define AR9170_TERMINATOR_NUMBER_CAB   1
+#define AR9170_TERMINATOR_NUMBER_CAB   CARL9170_INTF_NUM

 #else
 #define AR9170_TERMINATOR_NUMBER_CAB   0
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 #else
 #define AR9170_TERMINATOR_NUMBER_CAB   0
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */

diff --git a/carlfw/include/wl.h b/carlfw/include/wl.h
index 47dda502bcd7a60ec912d79143327359096a6fc5..fa3cb229afeb41e0d1ab6f70b344268755172315 100644 (file)
--- a/carlfw/include/wl.h
+++ b/carlfw/include/wl.h
@@ -261,6 +261,9 @@ void wlan_timer(void);
 void handle_wlan(void);
 void wlan_tx_stuck(const struct carl9170_cmd *cmd, struct carl9170_rsp *rsp);
 
 void handle_wlan(void);
 void wlan_tx_stuck(const struct carl9170_cmd *cmd, struct carl9170_rsp *rsp);
 

+void wlan_cab_flush_queue(const unsigned int vif);
+void wlan_cab_modify_dtim_beacon(const unsigned int vif);
+

 static inline void __check_wlantx(void)
 {
        BUILD_BUG_ON(sizeof(struct carl9170_tx_superdesc) != CARL9170_TX_SUPERDESC_LEN);
 static inline void __check_wlantx(void)
 {
        BUILD_BUG_ON(sizeof(struct carl9170_tx_superdesc) != CARL9170_TX_SUPERDESC_LEN);

diff --git a/carlfw/src/cmd.c b/carlfw/src/cmd.c
index e04e8da486b44dfac8eafe62374cb4cd595a6831..587a826cee6372dca2a72e0dd474c50d7a101052 100644 (file)
--- a/carlfw/src/cmd.c
+++ b/carlfw/src/cmd.c
@@ -82,9 +82,15 @@ void handle_cmd(struct carl9170_rsp *resp)
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
        case CARL9170_CMD_FLUSH_CAB:
                resp->hdr.len = 0;
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
        case CARL9170_CMD_FLUSH_CAB:
                resp->hdr.len = 0;

-               fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_ARMED;
-               fw.wlan.cab_flush_time = get_clock_counter() +
-                                        CARL9170_TBTT_DELTA;
+
+               if (cmd->cab_flush.mode & CARL9170_CAB_FLUSH_CAB_TRIGGER) {
+                       wlan_cab_modify_dtim_beacon(cmd->cab_flush.vif_id);
+                       set(AR9170_MAC_REG_BCN_CTRL, AR9170_BCN_CTRL_READY);
+               } else {
+                       wlan_cab_flush_queue(cmd->cab_flush.vif_id);
+                       if (fw.wlan.cab_flush_vif == cmd->cab_flush.vif_id)
+                               fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_EMPTY;
+               }

                break;
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 
                break;
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 

diff --git a/carlfw/src/dma.c b/carlfw/src/dma.c
index dc4d2785ac4175fd1ca93cda5c29eba89ba59d63..6b40e05b846db7aac851daf309464df8ab0b0cfe 100644 (file)
--- a/carlfw/src/dma.c
+++ b/carlfw/src/dma.c
@@ -82,7 +82,14 @@ void dma_init_descriptors(void)
        fw.usb.int_desc = &dma_mem.terminator[i++];
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
        fw.usb.int_desc = &dma_mem.terminator[i++];
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE

-       fw.wlan.cab_queue.head = fw.wlan.cab_queue.terminator = &dma_mem.terminator[i++];
+       /* GCC bug ? */
+# if (CARL9170_INTF_NUM != 2)
+       for (j = 0; j < CARL9170_INTF_NUM; j++)
+               fw.wlan.cab_queue[j].head = fw.wlan.cab_queue[j].terminator = &dma_mem.terminator[i++];
+#else
+       fw.wlan.cab_queue[0].head = fw.wlan.cab_queue[0].terminator = &dma_mem.terminator[i++];
+       fw.wlan.cab_queue[1].head = fw.wlan.cab_queue[1].terminator = &dma_mem.terminator[i++];
+#endif

 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 
 #ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 
 #ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ


@@ -96,6 +103,8 @@ void dma_init_descriptors(void)
                fw.wlan.tx_delay[j].head = fw.wlan.tx_delay[j].terminator = &dma_mem.terminator[i++];
 #endif /* CONFIG_CARL9170FW_DELAYED_TX */
 
                fw.wlan.tx_delay[j].head = fw.wlan.tx_delay[j].terminator = &dma_mem.terminator[i++];
 #endif /* CONFIG_CARL9170FW_DELAYED_TX */
 

+       BUILD_BUG_ON(AR9170_TERMINATOR_NUMBER != j);
+

        DBG("Blocks:%d [tx:%d, rx:%d] Terminators:%d/%d\n",
            AR9170_BLOCK_NUMBER, AR9170_TX_BLOCK_NUMBER,
            AR9170_RX_BLOCK_NUMBER, AR9170_TERMINATOR_NUMBER, i);
        DBG("Blocks:%d [tx:%d, rx:%d] Terminators:%d/%d\n",
            AR9170_BLOCK_NUMBER, AR9170_TX_BLOCK_NUMBER,
            AR9170_RX_BLOCK_NUMBER, AR9170_TERMINATOR_NUMBER, i);

diff --git a/carlfw/src/wlan.c b/carlfw/src/wlan.c
index 279aedd7d9b66addd4824b980bcf80d5c1cff3d6..367dfabe0cfbd19ebd353c437a20ac76ee65efb2 100644 (file)
--- a/carlfw/src/wlan.c
+++ b/carlfw/src/wlan.c
@@ -357,7 +357,7 @@ static bool wlan_tx_status(struct dma_queue *queue,
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
        if (unlikely(super->s.cab))
 
 #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 */
 #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)) {
 
 #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 */
                return;
        }
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */


@@ -598,6 +598,36 @@ static void handle_rx(void)
 }
 
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
 }
 
 #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);
 static uint8_t *beacon_find_ie(uint8_t ie)
 {
        struct ieee80211_mgmt *mgmt = getp(AR9170_MAC_REG_BCN_ADDR);


@@ -624,60 +654,7 @@ static uint8_t *beacon_find_ie(uint8_t ie)
        return NULL;
 }
 
        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;
 {
        uint8_t *_ie;
        struct ieee80211_tim_ie *ie;


@@ -685,16 +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];
        _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;
                        /* 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;
                }
 
                        /* 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;
                if (fw.wlan.cab_flush_trigger) {
                        /* Set the almighty Multicast Traffic Indication Bit. */
                        ie->bitmap_ctrl |= 0x1;


@@ -707,16 +686,6 @@ static void handle_beacon_config(void)
 {
        uint32_t bcn_count;
 
 {
        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);
        bcn_count = get(AR9170_MAC_REG_BCN_COUNT);
        send_cmd_to_host(4, CARL9170_RSP_BEACON_CONFIG, 0x00,
                         (uint8_t *) &bcn_count);


@@ -736,7 +705,6 @@ static void handle_pretbtt(void)
 #else
        send_cmd_to_host(0, CARL9170_RSP_PRETBTT, 0x00, NULL);
 #endif /* CONFIG_CARL9170FW_PSM */
 #else
        send_cmd_to_host(0, CARL9170_RSP_PRETBTT, 0x00, NULL);
 #endif /* CONFIG_CARL9170FW_PSM */

-

 }
 
 static void handle_atim(void)
 }
 
 static void handle_atim(void)


@@ -763,7 +731,7 @@ static void handle_radar(void)
 static void wlan_janitor(void)
 {
 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
 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.
                 *
                /*
                 * This is hardcoded into carl9170usb driver.
                 *


@@ -774,9 +742,16 @@ static void wlan_janitor(void)
                 * 11.2.1.6. Let's hope the current solution is adequate enough.
                 */
 
                 * 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 */
                }
        }
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */

diff --git a/include/shared/fwcmd.h b/include/shared/fwcmd.h
index be62c9ce4dac5da331bdb43ba99e80af15fdd0b1..f1c8f9e81d80c48bcb192ba60674fb3738fdd5bb 100644 (file)
--- a/include/shared/fwcmd.h
+++ b/include/shared/fwcmd.h
@@ -152,9 +152,13 @@ struct carl9170_psm {
 #define CARL9170_PSM_SIZE              4
 
 struct carl9170_cab_flush_cmd {
 #define CARL9170_PSM_SIZE              4
 
 struct carl9170_cab_flush_cmd {

-       __le32          vif_id;         /* currently unused */
+       __le32          vif_id;
+       __le32          mode;

 } __packed;
 } __packed;

-#define CARL9170_CAB_FLUSH_CMD_SIZE    4
+#define CARL9170_CAB_FLUSH_CMD_SIZE    8
+
+#define CARL9170_CAB_FLUSH_DRAIN       0
+#define CARL9170_CAB_FLUSH_CAB_TRIGGER 1

 
 struct carl9170_cmd_head {
        union {
 
 struct carl9170_cmd_head {
        union {

diff --git a/include/shared/fwdesc.h b/include/shared/fwdesc.h
index 86b998bd67d959d69a98532b3db04c3af948f5aa..2bd4320845301117f50dfed19f48e8f31de460e5 100644 (file)
--- a/include/shared/fwdesc.h
+++ b/include/shared/fwdesc.h
@@ -92,8 +92,8 @@ struct carl9170fw_desc_head {
 #define CARL9170FW_DESC_HEAD_SIZE                      \
        (sizeof(struct carl9170fw_desc_head))
 
 #define CARL9170FW_DESC_HEAD_SIZE                      \
        (sizeof(struct carl9170fw_desc_head))
 

-#define CARL9170FW_OTUS_DESC_MIN_VER           4
-#define CARL9170FW_OTUS_DESC_CUR_VER           4
+#define CARL9170FW_OTUS_DESC_MIN_VER           5
+#define CARL9170FW_OTUS_DESC_CUR_VER           5

 struct carl9170fw_otus_desc {
        struct carl9170fw_desc_head head;
        __le32 feature_set;
 struct carl9170fw_otus_desc {
        struct carl9170fw_desc_head head;
        __le32 feature_set;

diff --git a/include/shared/hw.h b/include/shared/hw.h
index 14973128ea4d6fb26f945f1e0b8ed0324f68ef86..13b7b754cc4dfa1226ed4191dfeb78c538d0d8f6 100644 (file)
--- a/include/shared/hw.h
+++ b/include/shared/hw.h
@@ -375,8 +375,8 @@
 
 #define        AR9170_MAC_REG_BCN_PLCP                 (AR9170_MAC_REG_BASE + 0xd90)
 #define        AR9170_MAC_REG_BCN_CTRL                 (AR9170_MAC_REG_BASE + 0xd94)
 
 #define        AR9170_MAC_REG_BCN_PLCP                 (AR9170_MAC_REG_BASE + 0xd90)
 #define        AR9170_MAC_REG_BCN_CTRL                 (AR9170_MAC_REG_BASE + 0xd94)

-#define                AR9170_BCN_READY                        0x01
-#define                AR9170_BCN_LOCK                         0x02
+#define                AR9170_BCN_CTRL_READY                   0x01
+#define                AR9170_BCN_CTRL_LOCK                    0x02

 
 #define AR9170_MAC_REG_BCN_CURR_ADDR           (AR9170_MAC_REG_BASE + 0xd98)
 #define        AR9170_MAC_REG_BCN_COUNT                (AR9170_MAC_REG_BASE + 0xd9c)
 
 #define AR9170_MAC_REG_BCN_CURR_ADDR           (AR9170_MAC_REG_BASE + 0xd98)
 #define        AR9170_MAC_REG_BCN_COUNT                (AR9170_MAC_REG_BASE + 0xd9c)