rtlwifi: Add usb driver

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: George <george0505@realtek.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 1201 insertions, 1 deletions

diff --git a/drivers/net/wireless/rtlwifi/Makefile b/drivers/net/wireless/rtlwifi/Makefile
index 2a7a4384f8ee..efbff2f478bf 100644
--- a/drivers/net/wireless/rtlwifi/Makefile
+++ b/drivers/net/wireless/rtlwifi/Makefile
@@ -8,6 +8,7 @@ rtlwifi-objs	:=		\
                 pci.o           \
                 ps.o            \
                 rc.o            \
-                regd.o
+                regd.o          \
+                usb.o
 
 obj-$(CONFIG_RTL8192CE)         += rtl8192ce/
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c
new file mode 100644
index 000000000000..fbf24a0f9054
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/usb.c
@@ -0,0 +1,1035 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2009-2011  Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * wlanfae <wlanfae@realtek.com>
+ * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
+ * Hsinchu 300, Taiwan.
+ *
+ *****************************************************************************/
+#include <linux/usb.h>
+#include "core.h"
+#include "wifi.h"
+#include "usb.h"
+#include "base.h"
+#include "ps.h"
+
+#define REALTEK_USB_VENQT_READ                  0xC0
+#define REALTEK_USB_VENQT_WRITE                 0x40
+#define REALTEK_USB_VENQT_CMD_REQ               0x05
+#define REALTEK_USB_VENQT_CMD_IDX               0x00
+
+#define REALTEK_USB_VENQT_MAX_BUF_SIZE          254
+
+static void usbctrl_async_callback(struct urb *urb)
+{
+        if (urb)
+                kfree(urb->context);
+}
+
+static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
+                                          u16 value, u16 index, void *pdata,
+                                          u16 len)
+{
+        int rc;
+        unsigned int pipe;
+        u8 reqtype;
+        struct usb_ctrlrequest *dr;
+        struct urb *urb;
+        struct rtl819x_async_write_data {
+                u8 data[REALTEK_USB_VENQT_MAX_BUF_SIZE];
+                struct usb_ctrlrequest dr;
+        } *buf;
+
+        pipe = usb_sndctrlpipe(udev, 0); /* write_out */
+        reqtype =  REALTEK_USB_VENQT_WRITE;
+
+        buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
+        if (!buf)
+                return -ENOMEM;
+
+        urb = usb_alloc_urb(0, GFP_ATOMIC);
+        if (!urb) {
+                kfree(buf);
+                return -ENOMEM;
+        }
+
+        dr = &buf->dr;
+
+        dr->bRequestType = reqtype;
+        dr->bRequest = request;
+        dr->wValue = cpu_to_le16(value);
+        dr->wIndex = cpu_to_le16(index);
+        dr->wLength = cpu_to_le16(len);
+        memcpy(buf, pdata, len);
+        usb_fill_control_urb(urb, udev, pipe,
+                             (unsigned char *)dr, buf, len,
+                             usbctrl_async_callback, buf);
+        rc = usb_submit_urb(urb, GFP_ATOMIC);
+        if (rc < 0)
+                kfree(buf);
+        usb_free_urb(urb);
+        return rc;
+}
+
+static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
+                                        u16 value, u16 index, void *pdata,
+                                        u16 len)
+{
+        unsigned int pipe;
+        int status;
+        u8 reqtype;
+
+        pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
+        reqtype =  REALTEK_USB_VENQT_READ;
+
+        status = usb_control_msg(udev, pipe, request, reqtype, value, index,
+                                 pdata, len, 0); /* max. timeout */
+
+        if (status < 0)
+                printk(KERN_ERR "reg 0x%x, usbctrl_vendorreq TimeOut! "
+                       "status:0x%x value=0x%x\n", value, status,
+                       *(u32 *)pdata);
+        return status;
+}
+
+static u32 _usb_read_sync(struct usb_device *udev, u32 addr, u16 len)
+{
+        u8 request;
+        u16 wvalue;
+        u16 index;
+        u32 *data;
+        u32 ret;
+
+        data = kmalloc(sizeof(u32), GFP_KERNEL);
+        if (!data)
+                return -ENOMEM;
+        request = REALTEK_USB_VENQT_CMD_REQ;
+        index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
+
+        wvalue = (u16)addr;
+        _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
+        ret = le32_to_cpu(*data);
+        kfree(data);
+        return ret;
+}
+
+static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        return (u8)_usb_read_sync(to_usb_device(dev), addr, 1);
+}
+
+static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        return (u16)_usb_read_sync(to_usb_device(dev), addr, 2);
+}
+
+static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        return _usb_read_sync(to_usb_device(dev), addr, 4);
+}
+
+static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
+                             u16 len)
+{
+        u8 request;
+        u16 wvalue;
+        u16 index;
+        u32 data;
+
+        request = REALTEK_USB_VENQT_CMD_REQ;
+        index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
+        wvalue = (u16)(addr&0x0000ffff);
+        data = cpu_to_le32(val);
+        _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
+                                       len);
+}
+
+static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        _usb_write_async(to_usb_device(dev), addr, val, 1);
+}
+
+static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        _usb_write_async(to_usb_device(dev), addr, val, 2);
+}
+
+static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        _usb_write_async(to_usb_device(dev), addr, val, 4);
+}
+
+static int _usb_nbytes_read_write(struct usb_device *udev, bool read, u32 addr,
+                                  u16 len, u8 *pdata)
+{
+        int status;
+        u8 request;
+        u16 wvalue;
+        u16 index;
+
+        request = REALTEK_USB_VENQT_CMD_REQ;
+        index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
+        wvalue = (u16)addr;
+        if (read)
+                status = _usbctrl_vendorreq_sync_read(udev, request, wvalue,
+                                                      index, pdata, len);
+        else
+                status = _usbctrl_vendorreq_async_write(udev, request, wvalue,
+                                                        index, pdata, len);
+        return status;
+}
+
+static int _usb_readN_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len,
+                           u8 *pdata)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        return _usb_nbytes_read_write(to_usb_device(dev), true, addr, len,
+                                       pdata);
+}
+
+static int _usb_writeN_async(struct rtl_priv *rtlpriv, u32 addr, u16 len,
+                             u8 *pdata)
+{
+        struct device *dev = rtlpriv->io.dev;
+
+        return _usb_nbytes_read_write(to_usb_device(dev), false, addr, len,
+                                      pdata);
+}
+
+static void _rtl_usb_io_handler_init(struct device *dev,
+                                     struct ieee80211_hw *hw)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+        rtlpriv->io.dev = dev;
+        mutex_init(&rtlpriv->io.bb_mutex);
+        rtlpriv->io.write8_async        = _usb_write8_async;
+        rtlpriv->io.write16_async       = _usb_write16_async;
+        rtlpriv->io.write32_async       = _usb_write32_async;
+        rtlpriv->io.writeN_async        = _usb_writeN_async;
+        rtlpriv->io.read8_sync          = _usb_read8_sync;
+        rtlpriv->io.read16_sync         = _usb_read16_sync;
+        rtlpriv->io.read32_sync         = _usb_read32_sync;
+        rtlpriv->io.readN_sync          = _usb_readN_sync;
+}
+
+static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+        mutex_destroy(&rtlpriv->io.bb_mutex);
+}
+
+/**
+ *
+ *      Default aggregation handler. Do nothing and just return the oldest skb.
+ */
+static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
+                                                  struct sk_buff_head *list)
+{
+        return skb_dequeue(list);
+}
+
+#define IS_HIGH_SPEED_USB(udev) \
+                ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
+
+static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
+{
+        u32 i;
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
+                                                    ? USB_HIGH_SPEED_BULK_SIZE
+                                                    : USB_FULL_SPEED_BULK_SIZE;
+
+        RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("USB Max Bulk-out Size=%d\n",
+                 rtlusb->max_bulk_out_size));
+
+        for (i = 0; i < __RTL_TXQ_NUM; i++) {
+                u32 ep_num = rtlusb->ep_map.ep_mapping[i];
+                if (!ep_num) {
+                        RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
+                                 ("Invalid endpoint map setting!\n"));
+                        return -EINVAL;
+                }
+        }
+
+        rtlusb->usb_tx_post_hdl =
+                 rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
+        rtlusb->usb_tx_cleanup  =
+                 rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
+        rtlusb->usb_tx_aggregate_hdl =
+                 (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
+                 ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
+                 : &_none_usb_tx_aggregate_hdl;
+
+        init_usb_anchor(&rtlusb->tx_submitted);
+        for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
+                skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
+                init_usb_anchor(&rtlusb->tx_pending[i]);
+        }
+        return 0;
+}
+
+static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
+
+        rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
+        rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
+        rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
+        rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
+        rtlusb->usb_rx_segregate_hdl =
+                rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
+
+        printk(KERN_INFO "rtl8192cu: rx_max_size %d, rx_urb_num %d, in_ep %d\n",
+                rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
+        init_usb_anchor(&rtlusb->rx_submitted);
+        return 0;
+}
+
+static int _rtl_usb_init(struct ieee80211_hw *hw)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
+        int err;
+        u8 epidx;
+        struct usb_interface    *usb_intf = rtlusb->intf;
+        u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
+
+        rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
+        for (epidx = 0; epidx < epnums; epidx++) {
+                struct usb_endpoint_descriptor *pep_desc;
+                pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
+
+                if (usb_endpoint_dir_in(pep_desc))
+                        rtlusb->in_ep_nums++;
+                else if (usb_endpoint_dir_out(pep_desc))
+                        rtlusb->out_ep_nums++;
+
+                RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
+                         ("USB EP(0x%02x), MaxPacketSize=%d ,Interval=%d.\n",
+                         pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
+                         pep_desc->bInterval));
+        }
+        if (rtlusb->in_ep_nums <  rtlpriv->cfg->usb_interface_cfg->in_ep_num)
+                return -EINVAL ;
+
+        /* usb endpoint mapping */
+        err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
+        rtlusb->usb_mq_to_hwq =  rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
+        _rtl_usb_init_tx(hw);
+        _rtl_usb_init_rx(hw);
+        return err;
+}
+
+static int _rtl_usb_init_sw(struct ieee80211_hw *hw)
+{
+        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        rtlhal->hw = hw;
+        ppsc->b_inactiveps = false;
+        ppsc->b_leisure_ps = false;
+        ppsc->b_fwctrl_lps = false;
+        ppsc->b_reg_fwctrl_lps = 3;
+        ppsc->reg_max_lps_awakeintvl = 5;
+        ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
+
+         /* IBSS */
+        mac->beacon_interval = 100;
+
+         /* AMPDU */
+        mac->min_space_cfg = 0;
+        mac->max_mss_density = 0;
+
+        /* set sane AMPDU defaults */
+        mac->current_ampdu_density = 7;
+        mac->current_ampdu_factor = 3;
+
+        /* QOS */
+        rtlusb->acm_method = eAcmWay2_SW;
+
+        /* IRQ */
+        /* HIMR - turn all on */
+        rtlusb->irq_mask[0] = 0xFFFFFFFF;
+        /* HIMR_EX - turn all on */
+        rtlusb->irq_mask[1] = 0xFFFFFFFF;
+        rtlusb->disableHWSM =  true;
+        return 0;
+}
+
+#define __RADIO_TAP_SIZE_RSV    32
+
+static void _rtl_rx_completed(struct urb *urb);
+
+static struct sk_buff *_rtl_prep_rx_urb(struct ieee80211_hw *hw,
+                                        struct rtl_usb *rtlusb,
+                                        struct urb *urb,
+                                        gfp_t gfp_mask)
+{
+        struct sk_buff *skb;
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+        skb = __dev_alloc_skb((rtlusb->rx_max_size + __RADIO_TAP_SIZE_RSV),
+                               gfp_mask);
+        if (!skb) {
+                RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                         ("Failed to __dev_alloc_skb!!\n"))
+                return ERR_PTR(-ENOMEM);
+        }
+
+        /* reserve some space for mac80211's radiotap */
+        skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
+        usb_fill_bulk_urb(urb, rtlusb->udev,
+                          usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
+                          skb->data, min(skb_tailroom(skb),
+                          (int)rtlusb->rx_max_size),
+                          _rtl_rx_completed, skb);
+
+        _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
+        return skb;
+}
+
+#undef __RADIO_TAP_SIZE_RSV
+
+static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
+                                    struct sk_buff *skb)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        u8 *rxdesc = skb->data;
+        struct ieee80211_hdr *hdr;
+        bool unicast = false;
+        u16 fc;
+        struct ieee80211_rx_status rx_status = {0};
+        struct rtl_stats stats = {
+                .signal = 0,
+                .noise = -98,
+                .rate = 0,
+        };
+
+        skb_pull(skb, RTL_RX_DESC_SIZE);
+        rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
+        skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
+        hdr = (struct ieee80211_hdr *)(skb->data);
+        fc = le16_to_cpu(hdr->frame_control);
+        if (!stats.b_crc) {
+                memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
+
+                if (is_broadcast_ether_addr(hdr->addr1)) {
+                        /*TODO*/;
+                } else if (is_multicast_ether_addr(hdr->addr1)) {
+                        /*TODO*/
+                } else {
+                        unicast = true;
+                        rtlpriv->stats.rxbytesunicast +=  skb->len;
+                }
+
+                rtl_is_special_data(hw, skb, false);
+
+                if (ieee80211_is_data(fc)) {
+                        rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
+
+                        if (unicast)
+                                rtlpriv->link_info.num_rx_inperiod++;
+                }
+        }
+}
+
+static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
+                                      struct sk_buff *skb)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        u8 *rxdesc = skb->data;
+        struct ieee80211_hdr *hdr;
+        bool unicast = false;
+        u16 fc;
+        struct ieee80211_rx_status rx_status = {0};
+        struct rtl_stats stats = {
+                .signal = 0,
+                .noise = -98,
+                .rate = 0,
+        };
+
+        skb_pull(skb, RTL_RX_DESC_SIZE);
+        rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
+        skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
+        hdr = (struct ieee80211_hdr *)(skb->data);
+        fc = le16_to_cpu(hdr->frame_control);
+        if (!stats.b_crc) {
+                memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
+
+                if (is_broadcast_ether_addr(hdr->addr1)) {
+                        /*TODO*/;
+                } else if (is_multicast_ether_addr(hdr->addr1)) {
+                        /*TODO*/
+                } else {
+                        unicast = true;
+                        rtlpriv->stats.rxbytesunicast +=  skb->len;
+                }
+
+                rtl_is_special_data(hw, skb, false);
+
+                if (ieee80211_is_data(fc)) {
+                        rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
+
+                        if (unicast)
+                                rtlpriv->link_info.num_rx_inperiod++;
+                }
+                if (likely(rtl_action_proc(hw, skb, false))) {
+                        struct sk_buff *uskb = NULL;
+                        u8 *pdata;
+
+                        uskb = dev_alloc_skb(skb->len + 128);
+                        memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
+                               sizeof(rx_status));
+                        pdata = (u8 *)skb_put(uskb, skb->len);
+                        memcpy(pdata, skb->data, skb->len);
+                        dev_kfree_skb_any(skb);
+                        ieee80211_rx_irqsafe(hw, uskb);
+                } else {
+                        dev_kfree_skb_any(skb);
+                }
+        }
+}
+
+static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+        struct sk_buff *_skb;
+        struct sk_buff_head rx_queue;
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        skb_queue_head_init(&rx_queue);
+        if (rtlusb->usb_rx_segregate_hdl)
+                rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
+        WARN_ON(skb_queue_empty(&rx_queue));
+        while (!skb_queue_empty(&rx_queue)) {
+                _skb = skb_dequeue(&rx_queue);
+                _rtl_usb_rx_process_agg(hw, skb);
+                ieee80211_rx_irqsafe(hw, skb);
+        }
+}
+
+static void _rtl_rx_completed(struct urb *_urb)
+{
+        struct sk_buff *skb = (struct sk_buff *)_urb->context;
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
+        struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        int err = 0;
+
+        if (unlikely(IS_USB_STOP(rtlusb)))
+                goto free;
+
+        if (likely(0 == _urb->status)) {
+                /* If this code were moved to work queue, would CPU
+                 * utilization be improved?  NOTE: We shall allocate another skb
+                 * and reuse the original one.
+                 */
+                skb_put(skb, _urb->actual_length);
+
+                if (likely(!rtlusb->usb_rx_segregate_hdl)) {
+                        struct sk_buff *_skb;
+                        _rtl_usb_rx_process_noagg(hw, skb);
+                        _skb = _rtl_prep_rx_urb(hw, rtlusb, _urb, GFP_ATOMIC);
+                        if (IS_ERR(_skb)) {
+                                err = PTR_ERR(_skb);
+                                RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                                        ("Can't allocate skb for bulk IN!\n"));
+                                return;
+                        }
+                        skb = _skb;
+                } else{
+                        /* TO DO */
+                        _rtl_rx_pre_process(hw, skb);
+                        printk(KERN_ERR "rtlwifi: rx agg not supported\n");
+                }
+                goto resubmit;
+        }
+
+        switch (_urb->status) {
+        /* disconnect */
+        case -ENOENT:
+        case -ECONNRESET:
+        case -ENODEV:
+        case -ESHUTDOWN:
+                goto free;
+        default:
+                break;
+        }
+
+resubmit:
+        skb_reset_tail_pointer(skb);
+        skb_trim(skb, 0);
+
+        usb_anchor_urb(_urb, &rtlusb->rx_submitted);
+        err = usb_submit_urb(_urb, GFP_ATOMIC);
+        if (unlikely(err)) {
+                usb_unanchor_urb(_urb);
+                goto free;
+        }
+        return;
+
+free:
+        dev_kfree_skb_irq(skb);
+}
+
+static int _rtl_usb_receive(struct ieee80211_hw *hw)
+{
+        struct urb *urb;
+        struct sk_buff *skb;
+        int err;
+        int i;
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        WARN_ON(0 == rtlusb->rx_urb_num);
+        /* 1600 == 1514 + max WLAN header + rtk info */
+        WARN_ON(rtlusb->rx_max_size < 1600);
+
+        for (i = 0; i < rtlusb->rx_urb_num; i++) {
+                err = -ENOMEM;
+                urb = usb_alloc_urb(0, GFP_KERNEL);
+                if (!urb) {
+                        RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                                 ("Failed to alloc URB!!\n"))
+                        goto err_out;
+                }
+
+                skb = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
+                if (IS_ERR(skb)) {
+                        RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                                 ("Failed to prep_rx_urb!!\n"))
+                        err = PTR_ERR(skb);
+                        goto err_out;
+                }
+
+                usb_anchor_urb(urb, &rtlusb->rx_submitted);
+                err = usb_submit_urb(urb, GFP_KERNEL);
+                if (err)
+                        goto err_out;
+                usb_free_urb(urb);
+        }
+        return 0;
+
+err_out:
+        usb_kill_anchored_urbs(&rtlusb->rx_submitted);
+        return err;
+}
+
+static int rtl_usb_start(struct ieee80211_hw *hw)
+{
+        int err;
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        err = rtlpriv->cfg->ops->hw_init(hw);
+        rtl_init_rx_config(hw);
+
+        /* Enable software */
+        SET_USB_START(rtlusb);
+        /* should after adapter start and interrupt enable. */
+        set_hal_start(rtlhal);
+
+        /* Start bulk IN */
+        _rtl_usb_receive(hw);
+
+        return err;
+}
+/**
+ *
+ *
+ */
+
+/*=======================  tx =========================================*/
+static void rtl_usb_cleanup(struct ieee80211_hw *hw)
+{
+        u32 i;
+        struct sk_buff *_skb;
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+        struct ieee80211_tx_info *txinfo;
+
+        SET_USB_STOP(rtlusb);
+
+        /* clean up rx stuff. */
+        usb_kill_anchored_urbs(&rtlusb->rx_submitted);
+
+        /* clean up tx stuff */
+        for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
+                while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
+                        rtlusb->usb_tx_cleanup(hw, _skb);
+                        txinfo = IEEE80211_SKB_CB(_skb);
+                        ieee80211_tx_info_clear_status(txinfo);
+                        txinfo->flags |= IEEE80211_TX_STAT_ACK;
+                        ieee80211_tx_status_irqsafe(hw, _skb);
+                }
+                usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
+        }
+        usb_kill_anchored_urbs(&rtlusb->tx_submitted);
+}
+
+/**
+ *
+ * We may add some struct into struct rtl_usb later. Do deinit here.
+ *
+ */
+static void rtl_usb_deinit(struct ieee80211_hw *hw)
+{
+        rtl_usb_cleanup(hw);
+}
+
+static void rtl_usb_stop(struct ieee80211_hw *hw)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        /* should after adapter start and interrupt enable. */
+        set_hal_stop(rtlhal);
+        /* Enable software */
+        SET_USB_STOP(rtlusb);
+        rtl_usb_deinit(hw);
+        rtlpriv->cfg->ops->hw_disable(hw);
+}
+
+static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
+{
+        int err;
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        usb_anchor_urb(_urb, &rtlusb->tx_submitted);
+        err = usb_submit_urb(_urb, GFP_ATOMIC);
+        if (err < 0) {
+                struct sk_buff *skb;
+
+                RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                         ("Failed to submit urb.\n"));
+                usb_unanchor_urb(_urb);
+                skb = (struct sk_buff *)_urb->context;
+                kfree_skb(skb);
+        }
+        usb_free_urb(_urb);
+}
+
+static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
+                        struct sk_buff *skb)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+        struct ieee80211_tx_info *txinfo;
+
+        rtlusb->usb_tx_post_hdl(hw, urb, skb);
+        skb_pull(skb, RTL_TX_HEADER_SIZE);
+        txinfo = IEEE80211_SKB_CB(skb);
+        ieee80211_tx_info_clear_status(txinfo);
+        txinfo->flags |= IEEE80211_TX_STAT_ACK;
+
+        if (urb->status) {
+                RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                         ("Urb has error status 0x%X\n", urb->status));
+                goto out;
+        }
+        /*  TODO:       statistics */
+out:
+        ieee80211_tx_status_irqsafe(hw, skb);
+        return urb->status;
+}
+
+static void _rtl_tx_complete(struct urb *urb)
+{
+        struct sk_buff *skb = (struct sk_buff *)urb->context;
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
+        struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
+        int err;
+
+        if (unlikely(IS_USB_STOP(rtlusb)))
+                return;
+        err = _usb_tx_post(hw, urb, skb);
+        if (err) {
+                /* Ignore error and keep issuiing other urbs */
+                return;
+        }
+}
+
+static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
+                                struct sk_buff *skb, u32 ep_num)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+        struct urb *_urb;
+
+        WARN_ON(NULL == skb);
+        _urb = usb_alloc_urb(0, GFP_ATOMIC);
+        if (!_urb) {
+                RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                         ("Can't allocate URB for bulk out!\n"));
+                kfree_skb(skb);
+                return NULL;
+        }
+        _rtl_install_trx_info(rtlusb, skb, ep_num);
+        usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
+                          ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
+        _urb->transfer_flags |= URB_ZERO_PACKET;
+        return _urb;
+}
+
+static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
+                       enum rtl_txq qnum)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+        u32 ep_num;
+        struct urb *_urb = NULL;
+        struct sk_buff *_skb = NULL;
+        struct sk_buff_head *skb_list;
+        struct usb_anchor *urb_list;
+
+        WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
+        if (unlikely(IS_USB_STOP(rtlusb))) {
+                RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+                         ("USB device is stopping...\n"));
+                kfree_skb(skb);
+                return;
+        }
+        ep_num = rtlusb->ep_map.ep_mapping[qnum];
+        skb_list = &rtlusb->tx_skb_queue[ep_num];
+        _skb = skb;
+        _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
+        if (unlikely(!_urb)) {
+                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+                         ("Can't allocate urb. Drop skb!\n"));
+                return;
+        }
+        urb_list = &rtlusb->tx_pending[ep_num];
+        _rtl_submit_tx_urb(hw, _urb);
+}
+
+static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
+                            u16 hw_queue)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        struct rtl_tx_desc *pdesc = NULL;
+        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
+        u16 fc = le16_to_cpu(hdr->frame_control);
+        u8 *pda_addr = hdr->addr1;
+        /* ssn */
+        u8 *qc = NULL;
+        u8 tid = 0;
+        u16 seq_number = 0;
+
+        if (ieee80211_is_mgmt(fc))
+                rtl_tx_mgmt_proc(hw, skb);
+        rtl_action_proc(hw, skb, true);
+        if (is_multicast_ether_addr(pda_addr))
+                rtlpriv->stats.txbytesmulticast += skb->len;
+        else if (is_broadcast_ether_addr(pda_addr))
+                rtlpriv->stats.txbytesbroadcast += skb->len;
+        else
+                rtlpriv->stats.txbytesunicast += skb->len;
+        if (ieee80211_is_data_qos(fc)) {
+                qc = ieee80211_get_qos_ctl(hdr);
+                tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
+                seq_number = (le16_to_cpu(hdr->seq_ctrl) &
+                             IEEE80211_SCTL_SEQ) >> 4;
+                seq_number += 1;
+                seq_number <<= 4;
+        }
+        rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, skb,
+                                        hw_queue);
+        if (!ieee80211_has_morefrags(hdr->frame_control)) {
+                if (qc)
+                        mac->tids[tid].seq_number = seq_number;
+        }
+        if (ieee80211_is_data(fc))
+                rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
+}
+
+static int rtl_usb_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
+        u16 fc = le16_to_cpu(hdr->frame_control);
+        u16 hw_queue;
+
+        if (unlikely(is_hal_stop(rtlhal)))
+                goto err_free;
+        hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
+        _rtl_usb_tx_preprocess(hw, skb, hw_queue);
+        _rtl_usb_transmit(hw, skb, hw_queue);
+        return NETDEV_TX_OK;
+
+err_free:
+        dev_kfree_skb_any(skb);
+        return NETDEV_TX_OK;
+}
+
+static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
+                                        struct sk_buff *skb)
+{
+        return false;
+}
+
+static struct rtl_intf_ops rtl_usb_ops = {
+        .adapter_start = rtl_usb_start,
+        .adapter_stop = rtl_usb_stop,
+        .adapter_tx = rtl_usb_tx,
+        .waitq_insert = rtl_usb_tx_chk_waitq_insert,
+};
+
+int __devinit rtl_usb_probe(struct usb_interface *intf,
+                        const struct usb_device_id *id)
+{
+        int err;
+        struct ieee80211_hw *hw = NULL;
+        struct rtl_priv *rtlpriv = NULL;
+        struct usb_device       *udev;
+        struct rtl_usb_priv *usb_priv;
+
+        hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
+                                sizeof(struct rtl_usb_priv), &rtl_ops);
+        if (!hw) {
+                RT_ASSERT(false, ("%s : ieee80211 alloc failed\n", __func__));
+                return -ENOMEM;
+        }
+        rtlpriv = hw->priv;
+        SET_IEEE80211_DEV(hw, &intf->dev);
+        udev = interface_to_usbdev(intf);
+        usb_get_dev(udev);
+        usb_priv = rtl_usbpriv(hw);
+        memset(usb_priv, 0, sizeof(*usb_priv));
+        usb_priv->dev.intf = intf;
+        usb_priv->dev.udev = udev;
+        usb_set_intfdata(intf, hw);
+        /* init cfg & intf_ops */
+        rtlpriv->rtlhal.interface = INTF_USB;
+        rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_info);
+        rtlpriv->intf_ops = &rtl_usb_ops;
+        rtl_dbgp_flag_init(hw);
+        /* Init IO handler */
+        _rtl_usb_io_handler_init(&udev->dev, hw);
+        rtlpriv->cfg->ops->read_chip_version(hw);
+        /*like read eeprom and so on */
+        rtlpriv->cfg->ops->read_eeprom_info(hw);
+        if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
+                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+                         ("Can't init_sw_vars.\n"));
+                goto error_out;
+        }
+        rtlpriv->cfg->ops->init_sw_leds(hw);
+        err = _rtl_usb_init(hw);
+        err = _rtl_usb_init_sw(hw);
+        /* Init mac80211 sw */
+        err = rtl_init_core(hw);
+        if (err) {
+                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+                         ("Can't allocate sw for mac80211.\n"));
+                goto error_out;
+        }
+
+        /*init rfkill */
+        /* rtl_init_rfkill(hw); */
+
+        err = ieee80211_register_hw(hw);
+        if (err) {
+                RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
+                         ("Can't register mac80211 hw.\n"));
+                goto error_out;
+        } else {
+                rtlpriv->mac80211.mac80211_registered = 1;
+        }
+        set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
+        return 0;
+error_out:
+        rtl_deinit_core(hw);
+        _rtl_usb_io_handler_release(hw);
+        ieee80211_free_hw(hw);
+        usb_put_dev(udev);
+        return -ENODEV;
+}
+EXPORT_SYMBOL(rtl_usb_probe);
+
+void rtl_usb_disconnect(struct usb_interface *intf)
+{
+        struct ieee80211_hw *hw = usb_get_intfdata(intf);
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
+        struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+
+        if (unlikely(!rtlpriv))
+                return;
+        /*ieee80211_unregister_hw will call ops_stop */
+        if (rtlmac->mac80211_registered == 1) {
+                ieee80211_unregister_hw(hw);
+                rtlmac->mac80211_registered = 0;
+        } else {
+                rtl_deinit_deferred_work(hw);
+                rtlpriv->intf_ops->adapter_stop(hw);
+        }
+        /*deinit rfkill */
+        /* rtl_deinit_rfkill(hw); */
+        rtl_usb_deinit(hw);
+        rtl_deinit_core(hw);
+        rtlpriv->cfg->ops->deinit_sw_leds(hw);
+        rtlpriv->cfg->ops->deinit_sw_vars(hw);
+        _rtl_usb_io_handler_release(hw);
+        usb_put_dev(rtlusb->udev);
+        usb_set_intfdata(intf, NULL);
+        ieee80211_free_hw(hw);
+}
+EXPORT_SYMBOL(rtl_usb_disconnect);
+
+int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
+{
+        return 0;
+}
+EXPORT_SYMBOL(rtl_usb_suspend);
+
+int rtl_usb_resume(struct usb_interface *pusb_intf)
+{
+        return 0;
+}
+EXPORT_SYMBOL(rtl_usb_resume);
diff --git a/drivers/net/wireless/rtlwifi/usb.h b/drivers/net/wireless/rtlwifi/usb.h
new file mode 100644
index 000000000000..c83311655104
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/usb.h
@@ -0,0 +1,164 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2009-2011  Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * wlanfae <wlanfae@realtek.com>
+ * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
+ * Hsinchu 300, Taiwan.
+ *
+ *****************************************************************************/
+
+#ifndef __RTL_USB_H__
+#define __RTL_USB_H__
+
+#include <linux/usb.h>
+#include <linux/skbuff.h>
+
+#define RTL_USB_DEVICE(vend, prod, cfg) \
+        .match_flags = USB_DEVICE_ID_MATCH_DEVICE, \
+        .idVendor = (vend), \
+        .idProduct = (prod), \
+        .driver_info = (kernel_ulong_t)&(cfg)
+
+#define USB_HIGH_SPEED_BULK_SIZE        512
+#define USB_FULL_SPEED_BULK_SIZE        64
+
+
+#define RTL_USB_MAX_TXQ_NUM             4               /* max tx queue */
+#define RTL_USB_MAX_EP_NUM              6               /* max ep number */
+#define RTL_USB_MAX_TX_URBS_NUM         8
+
+enum rtl_txq {
+        /* These definitions shall be consistent with value
+         * returned by skb_get_queue_mapping
+         *------------------------------------*/
+        RTL_TXQ_BK,
+        RTL_TXQ_BE,
+        RTL_TXQ_VI,
+        RTL_TXQ_VO,
+        /*------------------------------------*/
+        RTL_TXQ_BCN,
+        RTL_TXQ_MGT,
+        RTL_TXQ_HI,
+
+        /* Must be last */
+        __RTL_TXQ_NUM,
+};
+
+struct rtl_ep_map {
+        u32 ep_mapping[__RTL_TXQ_NUM];
+};
+
+struct _trx_info {
+        struct rtl_usb *rtlusb;
+        u32 ep_num;
+};
+
+static inline void _rtl_install_trx_info(struct rtl_usb *rtlusb,
+                                         struct sk_buff *skb,
+                                         u32 ep_num)
+{
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        info->rate_driver_data[0] = rtlusb;
+        info->rate_driver_data[1] = (void *)(__kernel_size_t)ep_num;
+}
+
+
+/*  Add suspend/resume later */
+enum rtl_usb_state {
+        USB_STATE_STOP  = 0,
+        USB_STATE_START = 1,
+};
+
+#define IS_USB_STOP(rtlusb_ptr) (USB_STATE_STOP == (rtlusb_ptr)->state)
+#define IS_USB_START(rtlusb_ptr) (USB_STATE_START == (rtlusb_ptr)->state)
+#define SET_USB_STOP(rtlusb_ptr) \
+        do {                                                    \
+                (rtlusb_ptr)->state = USB_STATE_STOP;           \
+        } while (0)
+
+#define SET_USB_START(rtlusb_ptr)                               \
+        do { \
+                (rtlusb_ptr)->state = USB_STATE_START;          \
+        } while (0)
+
+struct rtl_usb {
+        struct usb_device *udev;
+        struct usb_interface *intf;
+        enum rtl_usb_state state;
+
+        /* Bcn control register setting */
+        u32 reg_bcn_ctrl_val;
+        /* for 88/92cu card disable */
+        u8      disableHWSM;
+        /*QOS & EDCA */
+        enum acm_method acm_method;
+        /* irq  . HIMR,HIMR_EX */
+        u32 irq_mask[2];
+        bool irq_enabled;
+
+        u16 (*usb_mq_to_hwq)(u16 fc, u16 mac80211_queue_index);
+
+        /* Tx */
+        u8 out_ep_nums ;
+        u8 out_queue_sel;
+        struct rtl_ep_map ep_map;
+
+        u32 max_bulk_out_size;
+        u32 tx_submitted_urbs;
+        struct sk_buff_head tx_skb_queue[RTL_USB_MAX_EP_NUM];
+
+        struct usb_anchor tx_pending[RTL_USB_MAX_EP_NUM];
+        struct usb_anchor tx_submitted;
+
+        struct sk_buff *(*usb_tx_aggregate_hdl)(struct ieee80211_hw *,
+                                                struct sk_buff_head *);
+        int (*usb_tx_post_hdl)(struct ieee80211_hw *,
+                               struct urb *, struct sk_buff *);
+        void (*usb_tx_cleanup)(struct ieee80211_hw *, struct sk_buff *);
+
+        /* Rx */
+        u8 in_ep_nums ;
+        u32 in_ep;              /* Bulk IN endpoint number */
+        u32 rx_max_size;        /* Bulk IN max buffer size */
+        u32 rx_urb_num;         /* How many Bulk INs are submitted to host. */
+        struct usb_anchor       rx_submitted;
+        void (*usb_rx_segregate_hdl)(struct ieee80211_hw *, struct sk_buff *,
+                                     struct sk_buff_head *);
+        void (*usb_rx_hdl)(struct ieee80211_hw *, struct sk_buff *);
+};
+
+struct rtl_usb_priv {
+        struct rtl_usb dev;
+        struct rtl_led_ctl ledctl;
+};
+
+#define rtl_usbpriv(hw)  (((struct rtl_usb_priv *)(rtl_priv(hw))->priv))
+#define rtl_usbdev(usbpriv)     (&((usbpriv)->dev))
+
+
+
+int __devinit rtl_usb_probe(struct usb_interface *intf,
+                            const struct usb_device_id *id);
+void rtl_usb_disconnect(struct usb_interface *intf);
+int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message);
+int rtl_usb_resume(struct usb_interface *pusb_intf);
+
+#endif