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Add rtl8723bu driver version 4.4.5
[android-x86/external-kernel-drivers.git] / rtl8723bu / os_dep / linux / usb_ops_linux.c
diff --git a/rtl8723bu/os_dep/linux/usb_ops_linux.c b/rtl8723bu/os_dep/linux/usb_ops_linux.c
new file mode 100644 (file)
index 0000000..9ee59ed
--- /dev/null
@@ -0,0 +1,1199 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2012 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
+ *
+ *******************************************************************************/
+#define _USB_OPS_LINUX_C_
+
+#include <drv_types.h>
+#include <hal_data.h>
+#include <rtw_sreset.h>
+
+struct rtw_async_write_data {
+       u8 data[VENDOR_CMD_MAX_DATA_LEN];
+       struct usb_ctrlrequest dr;
+};
+
+int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u8 request, u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
+{
+       _adapter        *padapter = pintfhdl->padapter;
+       struct dvobj_priv  *pdvobjpriv = adapter_to_dvobj(padapter);
+       struct pwrctrl_priv *pwrctl = dvobj_to_pwrctl(pdvobjpriv);
+       struct usb_device *udev=pdvobjpriv->pusbdev;
+
+       unsigned int pipe;
+       int status = 0;
+       u32 tmp_buflen=0;
+       u8 reqtype;
+       u8 *pIo_buf;
+       int vendorreq_times = 0;
+
+       #ifdef CONFIG_USB_VENDOR_REQ_BUFFER_DYNAMIC_ALLOCATE
+       u8 *tmp_buf;
+       #else // use stack memory
+       u8 tmp_buf[MAX_USB_IO_CTL_SIZE];
+       #endif
+
+#ifdef CONFIG_CONCURRENT_MODE
+       if(padapter->adapter_type > PRIMARY_ADAPTER)
+       {
+               padapter = padapter->pbuddy_adapter;
+               pdvobjpriv = adapter_to_dvobj(padapter);
+               udev = pdvobjpriv->pusbdev;
+       }
+#endif
+
+       //DBG_871X("%s %s:%d\n",__FUNCTION__, current->comm, current->pid);
+
+       if (RTW_CANNOT_IO(padapter)){
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usbctrl_vendorreq:(RTW_CANNOT_IO)!!!\n"));
+               status = -EPERM;
+               goto exit;
+       }
+
+       if(len>MAX_VENDOR_REQ_CMD_SIZE){
+               DBG_8192C( "[%s] Buffer len error ,vendor request failed\n", __FUNCTION__ );
+               status = -EINVAL;
+               goto exit;
+       }
+
+       #ifdef CONFIG_USB_VENDOR_REQ_MUTEX
+       _enter_critical_mutex(&pdvobjpriv->usb_vendor_req_mutex, NULL);
+       #endif
+
+
+       // Acquire IO memory for vendorreq
+#ifdef CONFIG_USB_VENDOR_REQ_BUFFER_PREALLOC
+       pIo_buf = pdvobjpriv->usb_vendor_req_buf;
+#else
+       #ifdef CONFIG_USB_VENDOR_REQ_BUFFER_DYNAMIC_ALLOCATE
+       tmp_buf = rtw_malloc( (u32) len + ALIGNMENT_UNIT);
+       tmp_buflen =  (u32)len + ALIGNMENT_UNIT;
+       #else // use stack memory
+       tmp_buflen = MAX_USB_IO_CTL_SIZE;
+       #endif
+
+       // Added by Albert 2010/02/09
+       // For mstar platform, mstar suggests the address for USB IO should be 16 bytes alignment.
+       // Trying to fix it here.
+       pIo_buf = (tmp_buf==NULL)?NULL:tmp_buf + ALIGNMENT_UNIT -((SIZE_PTR)(tmp_buf) & 0x0f );
+#endif
+
+       if ( pIo_buf== NULL) {
+               DBG_8192C( "[%s] pIo_buf == NULL \n", __FUNCTION__ );
+               status = -ENOMEM;
+               goto release_mutex;
+       }
+
+       while(++vendorreq_times<= MAX_USBCTRL_VENDORREQ_TIMES)
+       {
+               _rtw_memset(pIo_buf, 0, len);
+
+               if (requesttype == 0x01)
+               {
+                       pipe = usb_rcvctrlpipe(udev, 0);//read_in
+                       reqtype =  REALTEK_USB_VENQT_READ;
+               }
+               else
+               {
+                       pipe = usb_sndctrlpipe(udev, 0);//write_out
+                       reqtype =  REALTEK_USB_VENQT_WRITE;
+                       _rtw_memcpy( pIo_buf, pdata, len);
+               }
+
+               status = rtw_usb_control_msg(udev, pipe, request, reqtype, value, index, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
+
+               if ( status == len)   // Success this control transfer.
+               {
+                       rtw_reset_continual_io_error(pdvobjpriv);
+                       if ( requesttype == 0x01 )
+                       {   // For Control read transfer, we have to copy the read data from pIo_buf to pdata.
+                               _rtw_memcpy( pdata, pIo_buf,  len );
+                       }
+               }
+               else { // error cases
+                       DBG_8192C("reg 0x%x, usb %s %u fail, status:%d value=0x%x, vendorreq_times:%d\n"
+                               , value,(requesttype == 0x01)?"read":"write" , len, status, *(u32*)pdata, vendorreq_times);
+
+                       if (status < 0) {
+                               if(status == (-ESHUTDOWN)       || status == -ENODEV    )
+                               {
+                                       rtw_set_surprise_removed(padapter);
+                               } else {
+                                       #ifdef DBG_CONFIG_ERROR_DETECT
+                                       {
+                                               HAL_DATA_TYPE   *pHalData = GET_HAL_DATA(padapter);
+                                               pHalData->srestpriv.Wifi_Error_Status = USB_VEN_REQ_CMD_FAIL;
+                                       }
+                                       #endif
+                               }
+                       }
+                       else // status != len && status >= 0
+                       {
+                               if(status > 0) {
+                                       if ( requesttype == 0x01 )
+                                       {   // For Control read transfer, we have to copy the read data from pIo_buf to pdata.
+                                               _rtw_memcpy( pdata, pIo_buf,  len );
+                                       }
+                               }
+                       }
+
+                       if(rtw_inc_and_chk_continual_io_error(pdvobjpriv) == _TRUE ){
+                               rtw_set_surprise_removed(padapter);
+                               break;
+                       }
+
+               }
+
+               // firmware download is checksumed, don't retry
+               if( (value >= FW_START_ADDRESS ) || status == len )
+                       break;
+
+       }
+
+       // release IO memory used by vendorreq
+       #ifdef CONFIG_USB_VENDOR_REQ_BUFFER_DYNAMIC_ALLOCATE
+       rtw_mfree(tmp_buf, tmp_buflen);
+       #endif
+
+release_mutex:
+       #ifdef CONFIG_USB_VENDOR_REQ_MUTEX
+       _exit_critical_mutex(&pdvobjpriv->usb_vendor_req_mutex, NULL);
+       #endif
+exit:
+       return status;
+
+}
+
+#ifdef CONFIG_USB_SUPPORT_ASYNC_VDN_REQ
+static void _usbctrl_vendorreq_async_callback(struct urb *urb, struct pt_regs *regs)
+{
+       if (urb) {
+               if (urb->context) {
+                       rtw_mfree(urb->context, sizeof(struct rtw_async_write_data));
+               }
+               usb_free_urb(urb);
+       }
+}
+
+int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
+       u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
+{
+       int rc;
+       unsigned int pipe;
+       u8 reqtype;
+       struct usb_ctrlrequest *dr;
+       struct urb *urb;
+       struct rtw_async_write_data *buf;
+
+
+       if (requesttype == VENDOR_READ) {
+               pipe = usb_rcvctrlpipe(udev, 0);//read_in
+               reqtype =  REALTEK_USB_VENQT_READ;
+       }
+       else {
+               pipe = usb_sndctrlpipe(udev, 0);//write_out
+               reqtype =  REALTEK_USB_VENQT_WRITE;
+       }
+
+       buf = (struct rtl819x_async_write_data *)rtw_zmalloc(sizeof(*buf));
+       if (!buf) {
+               rc = -ENOMEM;
+               goto exit;
+       }
+
+       urb = usb_alloc_urb(0, GFP_ATOMIC);
+       if (!urb) {
+               rtw_mfree((u8*)buf, sizeof(*buf));
+               rc = -ENOMEM;
+               goto exit;
+       }
+
+       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);
+
+       _rtw_memcpy(buf, pdata, len);
+
+       usb_fill_control_urb(urb, udev, pipe, (unsigned char *)dr, buf, len,
+               _usbctrl_vendorreq_async_callback, buf);
+
+       rc = usb_submit_urb(urb, GFP_ATOMIC);
+       if (rc < 0) {
+               rtw_mfree((u8*)buf, sizeof(*buf));
+               usb_free_urb(urb);
+       }
+
+exit:
+       return rc;
+}
+
+
+#endif /* CONFIG_USB_SUPPORT_ASYNC_VDN_REQ */
+
+unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
+{
+       unsigned int pipe=0, ep_num=0;
+       struct usb_device *pusbd = pdvobj->pusbdev;
+
+       if (addr == RECV_BULK_IN_ADDR) {
+               pipe=usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[0]);
+
+       } else if (addr == RECV_INT_IN_ADDR) {
+               pipe=usb_rcvintpipe(pusbd, pdvobj->RtInPipe[1]);
+
+       } else if (addr < HW_QUEUE_ENTRY) {
+               ep_num = pdvobj->Queue2Pipe[addr];
+               pipe = usb_sndbulkpipe(pusbd, ep_num);
+       }
+
+       return pipe;
+}
+
+struct zero_bulkout_context{
+       void *pbuf;
+       void *purb;
+       void *pirp;
+       void *padapter;
+};
+
+static void usb_bulkout_zero_complete(struct urb *purb, struct pt_regs *regs)
+{
+       struct zero_bulkout_context *pcontext = (struct zero_bulkout_context *)purb->context;
+
+       //DBG_8192C("+usb_bulkout_zero_complete\n");
+
+       if(pcontext)
+       {
+               if(pcontext->pbuf)
+               {
+                       rtw_mfree(pcontext->pbuf, sizeof(int));
+               }
+
+               if(pcontext->purb && (pcontext->purb==purb))
+               {
+                       usb_free_urb(pcontext->purb);
+               }
+
+
+               rtw_mfree((u8*)pcontext, sizeof(struct zero_bulkout_context));
+       }
+
+
+}
+
+static u32 usb_bulkout_zero(struct intf_hdl *pintfhdl, u32 addr)
+{
+       int pipe, status, len;
+       u32 ret;
+       unsigned char *pbuf;
+       struct zero_bulkout_context *pcontext;
+       PURB    purb = NULL;
+       _adapter *padapter = (_adapter *)pintfhdl->padapter;
+       struct dvobj_priv *pdvobj = adapter_to_dvobj(padapter);
+       struct pwrctrl_priv *pwrctl = dvobj_to_pwrctl(pdvobj);
+       struct usb_device *pusbd = pdvobj->pusbdev;
+
+       //DBG_871X("%s\n", __func__);
+
+
+       if (RTW_CANNOT_TX(padapter))
+       {
+               return _FAIL;
+       }
+
+
+       pcontext = (struct zero_bulkout_context *)rtw_zmalloc(sizeof(struct zero_bulkout_context));
+       if (pcontext == NULL) {
+               return _FAIL;
+       }
+
+       pbuf = (unsigned char *)rtw_zmalloc(sizeof(int));
+       purb = usb_alloc_urb(0, GFP_ATOMIC);
+
+       //translate DMA FIFO addr to pipehandle
+       pipe = ffaddr2pipehdl(pdvobj, addr);
+
+       len = 0;
+       pcontext->pbuf = pbuf;
+       pcontext->purb = purb;
+       pcontext->pirp = NULL;
+       pcontext->padapter = padapter;
+
+
+       //translate DMA FIFO addr to pipehandle
+       //pipe = ffaddr2pipehdl(pdvobj, addr);
+
+       usb_fill_bulk_urb(purb, pusbd, pipe,
+                               pbuf,
+                               len,
+                               usb_bulkout_zero_complete,
+                               pcontext);//context is pcontext
+
+       status = usb_submit_urb(purb, GFP_ATOMIC);
+
+       if (!status)
+       {
+               ret= _SUCCESS;
+       }
+       else
+       {
+               ret= _FAIL;
+       }
+
+
+       return _SUCCESS;
+
+}
+
+void usb_read_mem(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *rmem)
+{
+
+}
+
+void usb_write_mem(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
+{
+
+}
+
+
+void usb_read_port_cancel(struct intf_hdl *pintfhdl)
+{
+       int i;
+       struct recv_buf *precvbuf;
+       _adapter        *padapter = pintfhdl->padapter;
+       precvbuf = (struct recv_buf *)padapter->recvpriv.precv_buf;
+
+       DBG_871X("%s\n", __func__);
+
+       for (i=0; i < NR_RECVBUFF ; i++) {
+
+               if (precvbuf->purb)      {
+                       //DBG_8192C("usb_read_port_cancel : usb_kill_urb \n");
+                       usb_kill_urb(precvbuf->purb);
+               }
+               precvbuf++;
+       }
+
+#ifdef CONFIG_USB_INTERRUPT_IN_PIPE
+       usb_kill_urb(padapter->recvpriv.int_in_urb);
+#endif
+}
+
+static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
+{
+       _irqL irqL;
+       int i;
+       struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
+       //struct xmit_frame *pxmitframe = (struct xmit_frame *)pxmitbuf->priv_data;
+       //_adapter                      *padapter = pxmitframe->padapter;
+       _adapter        *padapter = pxmitbuf->padapter;
+       struct xmit_priv        *pxmitpriv = &padapter->xmitpriv;
+       //struct pkt_attrib *pattrib = &pxmitframe->attrib;
+
+_func_enter_;
+
+       switch(pxmitbuf->flags)
+       {
+               case VO_QUEUE_INX:
+                       pxmitpriv->voq_cnt--;
+                       break;
+               case VI_QUEUE_INX:
+                       pxmitpriv->viq_cnt--;
+                       break;
+               case BE_QUEUE_INX:
+                       pxmitpriv->beq_cnt--;
+                       break;
+               case BK_QUEUE_INX:
+                       pxmitpriv->bkq_cnt--;
+                       break;
+               default:
+                       break;
+       }
+
+
+/*
+       _enter_critical(&pxmitpriv->lock, &irqL);
+
+       pxmitpriv->txirp_cnt--;
+
+       switch(pattrib->priority)
+       {
+               case 1:
+               case 2:
+                       pxmitpriv->bkq_cnt--;
+                       //DBG_8192C("pxmitpriv->bkq_cnt=%d\n", pxmitpriv->bkq_cnt);
+                       break;
+               case 4:
+               case 5:
+                       pxmitpriv->viq_cnt--;
+                       //DBG_8192C("pxmitpriv->viq_cnt=%d\n", pxmitpriv->viq_cnt);
+                       break;
+               case 6:
+               case 7:
+                       pxmitpriv->voq_cnt--;
+                       //DBG_8192C("pxmitpriv->voq_cnt=%d\n", pxmitpriv->voq_cnt);
+                       break;
+               case 0:
+               case 3:
+               default:
+                       pxmitpriv->beq_cnt--;
+                       //DBG_8192C("pxmitpriv->beq_cnt=%d\n", pxmitpriv->beq_cnt);
+                       break;
+
+       }
+
+       _exit_critical(&pxmitpriv->lock, &irqL);
+
+
+       if(pxmitpriv->txirp_cnt==0)
+       {
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port_complete: txirp_cnt== 0, set allrxreturnevt!\n"));
+               _rtw_up_sema(&(pxmitpriv->tx_retevt));
+       }
+*/
+        //rtw_free_xmitframe(pxmitpriv, pxmitframe);
+
+       if (RTW_CANNOT_TX(padapter))
+       {
+               DBG_8192C("%s(): TX Warning! bDriverStopped(%s) OR bSurpriseRemoved(%s) pxmitbuf->buf_tag(%x)\n"
+               , __func__
+               , rtw_is_drv_stopped(padapter)?"True":"False"
+               , rtw_is_surprise_removed(padapter)?"True":"False"
+               , pxmitbuf->buf_tag);
+
+               goto check_completion;
+       }
+
+
+       if (purb->status==0) {
+
+       } else {
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port_complete : purb->status(%d) != 0 \n", purb->status));
+               DBG_871X("###=> urb_write_port_complete status(%d)\n",purb->status);
+               if((purb->status==-EPIPE)||(purb->status==-EPROTO))
+               {
+                       //usb_clear_halt(pusbdev, purb->pipe);
+                       //msleep(10);
+                       sreset_set_wifi_error_status(padapter, USB_WRITE_PORT_FAIL);
+               } else if (purb->status == -EINPROGRESS) {
+                       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port_complete: EINPROGESS\n"));
+                       goto check_completion;
+
+               } else if (purb->status == -ENOENT) {
+                       DBG_871X("%s: -ENOENT\n", __func__);
+                       goto check_completion;
+
+               } else if (purb->status == -ECONNRESET) {
+                       DBG_871X("%s: -ECONNRESET\n", __func__);
+                       goto check_completion;
+
+               } else if (purb->status == -ESHUTDOWN) {
+                       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port_complete: ESHUTDOWN\n"));
+                       rtw_set_drv_stopped(padapter);
+                       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port_complete:bDriverStopped=TRUE\n"));
+
+                       goto check_completion;
+               }
+               else
+               {
+                       rtw_set_surprise_removed(padapter);
+                       DBG_8192C("bSurpriseRemoved=TRUE\n");
+                       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port_complete:bSurpriseRemoved=TRUE\n"));
+
+                       goto check_completion;
+               }
+       }
+
+       #ifdef DBG_CONFIG_ERROR_DETECT
+       {
+               HAL_DATA_TYPE   *pHalData = GET_HAL_DATA(padapter);
+               pHalData->srestpriv.last_tx_complete_time = rtw_get_current_time();
+       }
+       #endif
+
+check_completion:
+       _enter_critical(&pxmitpriv->lock_sctx, &irqL);
+       rtw_sctx_done_err(&pxmitbuf->sctx,
+       purb->status ? RTW_SCTX_DONE_WRITE_PORT_ERR : RTW_SCTX_DONE_SUCCESS);
+       _exit_critical(&pxmitpriv->lock_sctx, &irqL);
+
+       rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
+
+       //if(rtw_txframes_pending(padapter))
+       {
+               tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
+       }
+
+_func_exit_;
+
+}
+
+u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
+{
+       _irqL irqL;
+       unsigned int pipe;
+       int status;
+       u32 ret = _FAIL, bwritezero = _FALSE;
+       PURB    purb = NULL;
+       _adapter *padapter = (_adapter *)pintfhdl->padapter;
+       struct dvobj_priv       *pdvobj = adapter_to_dvobj(padapter);
+       struct pwrctrl_priv *pwrctl = dvobj_to_pwrctl(pdvobj);
+       struct xmit_priv        *pxmitpriv = &padapter->xmitpriv;
+       struct xmit_buf *pxmitbuf = (struct xmit_buf *)wmem;
+       struct xmit_frame *pxmitframe = (struct xmit_frame *)pxmitbuf->priv_data;
+       struct usb_device *pusbd = pdvobj->pusbdev;
+       struct pkt_attrib *pattrib = &pxmitframe->attrib;
+
+_func_enter_;
+
+       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("+usb_write_port\n"));
+
+       if (RTW_CANNOT_TX(padapter)) {
+               #ifdef DBG_TX
+               DBG_871X(" DBG_TX %s:%d bDriverStopped%s, bSurpriseRemoved:%s\n", __func__, __LINE__
+                       , rtw_is_drv_stopped(padapter)?"True":"False"
+                       , rtw_is_surprise_removed(padapter)?"True":"False");
+               #endif
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port:( padapter->bDriverStopped ||padapter->bSurpriseRemoved )!!!\n"));
+               rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
+               goto exit;
+       }
+
+       _enter_critical(&pxmitpriv->lock, &irqL);
+
+       switch(addr)
+       {
+               case VO_QUEUE_INX:
+                       pxmitpriv->voq_cnt++;
+                       pxmitbuf->flags = VO_QUEUE_INX;
+                       break;
+               case VI_QUEUE_INX:
+                       pxmitpriv->viq_cnt++;
+                       pxmitbuf->flags = VI_QUEUE_INX;
+                       break;
+               case BE_QUEUE_INX:
+                       pxmitpriv->beq_cnt++;
+                       pxmitbuf->flags = BE_QUEUE_INX;
+                       break;
+               case BK_QUEUE_INX:
+                       pxmitpriv->bkq_cnt++;
+                       pxmitbuf->flags = BK_QUEUE_INX;
+                       break;
+               case HIGH_QUEUE_INX:
+                       pxmitbuf->flags = HIGH_QUEUE_INX;
+                       break;
+               default:
+                       pxmitbuf->flags = MGT_QUEUE_INX;
+                       break;
+       }
+
+       _exit_critical(&pxmitpriv->lock, &irqL);
+
+       purb    = pxmitbuf->pxmit_urb[0];
+
+       //translate DMA FIFO addr to pipehandle
+       pipe = ffaddr2pipehdl(pdvobj, addr);
+
+#ifdef CONFIG_REDUCE_USB_TX_INT
+       if ( (pxmitpriv->free_xmitbuf_cnt%NR_XMITBUFF == 0)
+               || (pxmitbuf->buf_tag > XMITBUF_DATA) )
+       {
+               purb->transfer_flags  &=  (~URB_NO_INTERRUPT);
+       } else {
+               purb->transfer_flags  |=  URB_NO_INTERRUPT;
+               //DBG_8192C("URB_NO_INTERRUPT ");
+       }
+#endif
+
+
+       usb_fill_bulk_urb(purb, pusbd, pipe,
+                               pxmitframe->buf_addr, //= pxmitbuf->pbuf
+                               cnt,
+                               usb_write_port_complete,
+                               pxmitbuf);//context is pxmitbuf
+
+#ifdef CONFIG_USE_USB_BUFFER_ALLOC_TX
+       purb->transfer_dma = pxmitbuf->dma_transfer_addr;
+       purb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+       purb->transfer_flags |= URB_ZERO_PACKET;
+#endif // CONFIG_USE_USB_BUFFER_ALLOC_TX
+
+#ifdef USB_PACKET_OFFSET_SZ
+#if (USB_PACKET_OFFSET_SZ == 0)
+       purb->transfer_flags |= URB_ZERO_PACKET;
+#endif
+#endif
+
+#if 0
+       if (bwritezero)
+        {
+            purb->transfer_flags |= URB_ZERO_PACKET;
+        }
+#endif
+
+       status = usb_submit_urb(purb, GFP_ATOMIC);
+       if (!status) {
+               #ifdef DBG_CONFIG_ERROR_DETECT
+               {
+                       HAL_DATA_TYPE   *pHalData = GET_HAL_DATA(padapter);
+                       pHalData->srestpriv.last_tx_time = rtw_get_current_time();
+               }
+               #endif
+       } else {
+               rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
+               DBG_871X("usb_write_port, status=%d\n", status);
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_write_port(): usb_submit_urb, status=%x\n", status));
+
+               switch (status) {
+               case -ENODEV:
+                       rtw_set_drv_stopped(padapter);
+                       break;
+               default:
+                       break;
+               }
+               goto exit;
+       }
+
+       ret= _SUCCESS;
+
+//   Commented by Albert 2009/10/13
+//   We add the URB_ZERO_PACKET flag to urb so that the host will send the zero packet automatically.
+/*
+       if(bwritezero == _TRUE)
+       {
+               usb_bulkout_zero(pintfhdl, addr);
+       }
+*/
+
+       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("-usb_write_port\n"));
+
+exit:
+       if (ret != _SUCCESS)
+               rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
+_func_exit_;
+       return ret;
+
+}
+
+void usb_write_port_cancel(struct intf_hdl *pintfhdl)
+{
+       int i, j;
+       _adapter        *padapter = pintfhdl->padapter;
+       struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
+
+       DBG_871X("%s \n", __func__);
+
+       for (i=0; i<NR_XMITBUFF; i++) {
+               for (j=0; j<8; j++) {
+                       if (pxmitbuf->pxmit_urb[j]) {
+                               usb_kill_urb(pxmitbuf->pxmit_urb[j]);
+                       }
+               }
+               pxmitbuf++;
+       }
+
+       pxmitbuf = (struct xmit_buf*)padapter->xmitpriv.pxmit_extbuf;
+       for (i = 0; i < NR_XMIT_EXTBUFF ; i++) {
+               for (j=0; j<8; j++) {
+                       if(pxmitbuf->pxmit_urb[j]) {
+                               usb_kill_urb(pxmitbuf->pxmit_urb[j]);
+                       }
+               }
+               pxmitbuf++;
+       }
+}
+
+void usb_init_recvbuf(_adapter *padapter, struct recv_buf *precvbuf)
+{
+
+       precvbuf->transfer_len = 0;
+
+       precvbuf->len = 0;
+
+       precvbuf->ref_cnt = 0;
+
+       if(precvbuf->pbuf)
+       {
+               precvbuf->pdata = precvbuf->phead = precvbuf->ptail = precvbuf->pbuf;
+               precvbuf->pend = precvbuf->pdata + MAX_RECVBUF_SZ;
+       }
+
+}
+
+int recvbuf2recvframe(PADAPTER padapter, void *ptr);
+
+#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
+void usb_recv_tasklet(void *priv)
+{
+       struct recv_buf *precvbuf = NULL;
+       _adapter        *padapter = (_adapter*)priv;
+       struct recv_priv        *precvpriv = &padapter->recvpriv;
+
+       while (NULL != (precvbuf = rtw_dequeue_recvbuf(&precvpriv->recv_buf_pending_queue)))
+       {
+               if (RTW_CANNOT_RUN(padapter)) {
+                       DBG_8192C("recv_tasklet => bDriverStopped or bSurpriseRemoved\n");
+                       break;
+               }
+
+
+               recvbuf2recvframe(padapter, precvbuf);
+
+               rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
+       }
+
+}
+
+void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
+{
+       struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
+       _adapter                        *padapter =(_adapter *)precvbuf->adapter;
+       struct recv_priv        *precvpriv = &padapter->recvpriv;
+
+       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete!!!\n"));
+
+       ATOMIC_DEC(&(precvpriv->rx_pending_cnt));
+
+       if (RTW_CANNOT_RX(padapter))
+       {
+               DBG_8192C("%s() RX Warning! bDriverStopped(%s) OR bSurpriseRemoved(%s)\n"
+               , __func__
+               , rtw_is_drv_stopped(padapter)?"True":"False"
+               , rtw_is_surprise_removed(padapter)?"True":"False");
+               goto exit;
+       }
+
+       if(purb->status==0)//SUCCESS
+       {
+               if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE))
+               {
+                       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n"));
+
+                       rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
+               }
+               else
+               {
+                       rtw_reset_continual_io_error(adapter_to_dvobj(padapter));
+
+                       precvbuf->transfer_len = purb->actual_length;
+
+                       //rtw_enqueue_rx_transfer_buffer(precvpriv, rx_transfer_buf);
+                       rtw_enqueue_recvbuf(precvbuf, &precvpriv->recv_buf_pending_queue);
+
+                       tasklet_schedule(&precvpriv->recv_tasklet);
+               }
+       }
+       else
+       {
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete : purb->status(%d) != 0 \n", purb->status));
+
+               DBG_8192C("###=> usb_read_port_complete => urb status(%d)\n", purb->status);
+
+               if (rtw_inc_and_chk_continual_io_error(adapter_to_dvobj(padapter)) == _TRUE)
+                       rtw_set_surprise_removed(padapter);
+
+               switch(purb->status) {
+                       case -EINVAL:
+                       case -EPIPE:
+                       case -ENODEV:
+                       case -ESHUTDOWN:
+                               /*rtw_set_surprise_removed(padapter);*/
+                               //RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete:bSurpriseRemoved=TRUE\n"));
+                       case -ENOENT:
+                               rtw_set_drv_stopped(padapter);
+                               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete:bDriverStopped=TRUE\n"));
+                               break;
+                       case -EPROTO:
+                       case -EILSEQ:
+                       case -ETIME:
+                       case -ECOMM:
+                       case -EOVERFLOW:
+                               #ifdef DBG_CONFIG_ERROR_DETECT
+                               {
+                                       HAL_DATA_TYPE   *pHalData = GET_HAL_DATA(padapter);
+                                       pHalData->srestpriv.Wifi_Error_Status = USB_READ_PORT_FAIL;
+                               }
+                               #endif
+                               rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
+                               break;
+                       case -EINPROGRESS:
+                               DBG_8192C("ERROR: URB IS IN PROGRESS!/n");
+                               break;
+                       default:
+                               break;
+               }
+
+       }
+
+exit:
+
+_func_exit_;
+}
+
+u32 usb_read_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *rmem)
+{
+       int err;
+       unsigned int pipe;
+       u32 ret = _SUCCESS;
+       PURB purb = NULL;
+       struct recv_buf *precvbuf = (struct recv_buf *)rmem;
+       _adapter                *adapter = pintfhdl->padapter;
+       struct dvobj_priv       *pdvobj = adapter_to_dvobj(adapter);
+       struct pwrctrl_priv *pwrctl = dvobj_to_pwrctl(pdvobj);
+       struct recv_priv        *precvpriv = &adapter->recvpriv;
+       struct usb_device       *pusbd = pdvobj->pusbdev;
+
+_func_enter_;
+
+       if (RTW_CANNOT_RX(adapter) || (precvbuf == NULL))
+       {
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port:( RTW_CANNOT_RX ) || precvbuf == NULL!!!\n"));
+               return _FAIL;
+       }
+
+       usb_init_recvbuf(adapter, precvbuf);
+
+       if(precvbuf->pbuf)
+       {
+               ATOMIC_INC(&(precvpriv->rx_pending_cnt));
+               purb = precvbuf->purb;
+
+               //translate DMA FIFO addr to pipehandle
+               pipe = ffaddr2pipehdl(pdvobj, addr);
+
+               usb_fill_bulk_urb(purb, pusbd, pipe,
+                                       precvbuf->pbuf,
+                                       MAX_RECVBUF_SZ,
+                                       usb_read_port_complete,
+                                       precvbuf);//context is precvbuf
+
+               purb->transfer_dma = precvbuf->dma_transfer_addr;
+               purb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+               err = usb_submit_urb(purb, GFP_ATOMIC);
+               if((err) && (err != (-EPERM)))
+               {
+                       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("cannot submit rx in-token(err=0x%.8x), URB_STATUS =0x%.8x", err, purb->status));
+                       DBG_8192C("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n",err,purb->status);
+                       ret = _FAIL;
+               }
+
+       }
+
+_func_exit_;
+
+       return ret;
+}
+#else  // CONFIG_USE_USB_BUFFER_ALLOC_RX
+
+void usb_recv_tasklet(void *priv)
+{
+       _pkt                    *pskb;
+       _adapter                *padapter = (_adapter*)priv;
+       struct recv_priv        *precvpriv = &padapter->recvpriv;
+       struct recv_buf *precvbuf = NULL;
+
+       while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
+
+               if (RTW_CANNOT_RUN(padapter)) {
+                       DBG_8192C("recv_tasklet => bDriverStopped or bSurpriseRemoved\n");
+                       #ifdef CONFIG_PREALLOC_RX_SKB_BUFFER
+                       if (rtw_free_skb_premem(pskb) != 0)
+                       #endif //CONFIG_PREALLOC_RX_SKB_BUFFER
+                               rtw_skb_free(pskb);
+                       break;
+               }
+
+               recvbuf2recvframe(padapter, pskb);
+
+               skb_reset_tail_pointer(pskb);
+               pskb->len = 0;
+
+               skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
+
+               if (NULL != (precvbuf = rtw_dequeue_recvbuf(&precvpriv->recv_buf_pending_queue))) {
+                       precvbuf->pskb = NULL;
+                       rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
+               }
+       }
+}
+
+void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
+{
+       struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
+       _adapter                        *padapter =(_adapter *)precvbuf->adapter;
+       struct recv_priv        *precvpriv = &padapter->recvpriv;
+
+       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete!!!\n"));
+
+       ATOMIC_DEC(&(precvpriv->rx_pending_cnt));
+
+       if(RTW_CANNOT_RX(padapter))
+       {
+               DBG_8192C("%s() RX Warning! bDriverStopped(%s) OR bSurpriseRemoved(%s)\n"
+                       , __func__
+                       , rtw_is_drv_stopped(padapter)?"True":"False"
+                       , rtw_is_surprise_removed(padapter)?"True":"False");
+               goto exit;
+       }
+
+       if(purb->status==0)//SUCCESS
+       {
+               if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE))
+               {
+                       RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n"));
+                       rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
+                       DBG_8192C("%s()-%d: RX Warning!\n", __FUNCTION__, __LINE__);
+               }
+               else
+               {
+                       rtw_reset_continual_io_error(adapter_to_dvobj(padapter));
+
+                       precvbuf->transfer_len = purb->actual_length;
+                       skb_put(precvbuf->pskb, purb->actual_length);
+                       skb_queue_tail(&precvpriv->rx_skb_queue, precvbuf->pskb);
+
+                       #ifndef CONFIG_FIX_NR_BULKIN_BUFFER
+                       if (skb_queue_len(&precvpriv->rx_skb_queue)<=1)
+                       #endif
+                               tasklet_schedule(&precvpriv->recv_tasklet);
+
+                       precvbuf->pskb = NULL;
+                       rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
+               }
+       }
+       else
+       {
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete : purb->status(%d) != 0 \n", purb->status));
+
+               DBG_8192C("###=> usb_read_port_complete => urb status(%d)\n", purb->status);
+
+               if (rtw_inc_and_chk_continual_io_error(adapter_to_dvobj(padapter)) == _TRUE)
+                       rtw_set_surprise_removed(padapter);
+
+
+               switch(purb->status) {
+                       case -EINVAL:
+                       case -EPIPE:
+                       case -ENODEV:
+                       case -ESHUTDOWN:
+                               /*rtw_set_surprise_removed(padapter);*/
+                               //RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete:bSurpriseRemoved=TRUE\n"));
+                       case -ENOENT:
+                               rtw_set_drv_stopped(padapter);
+                               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port_complete:bDriverStopped=TRUE\n"));
+                               break;
+                       case -EPROTO:
+                       case -EILSEQ:
+                       case -ETIME:
+                       case -ECOMM:
+                       case -EOVERFLOW:
+                               #ifdef DBG_CONFIG_ERROR_DETECT
+                               {
+                                       HAL_DATA_TYPE   *pHalData = GET_HAL_DATA(padapter);
+                                       pHalData->srestpriv.Wifi_Error_Status = USB_READ_PORT_FAIL;
+                               }
+                               #endif
+                               rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
+                               break;
+                       case -EINPROGRESS:
+                               DBG_8192C("ERROR: URB IS IN PROGRESS!/n");
+                               break;
+                       default:
+                               break;
+               }
+
+       }
+
+exit:
+
+_func_exit_;
+
+}
+
+u32 usb_read_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *rmem)
+{
+       int err;
+       unsigned int pipe;
+       u32 ret = _FAIL;
+       PURB purb = NULL;
+       struct recv_buf *precvbuf = (struct recv_buf *)rmem;
+       _adapter                *adapter = pintfhdl->padapter;
+       struct dvobj_priv       *pdvobj = adapter_to_dvobj(adapter);
+       struct pwrctrl_priv *pwrctl = dvobj_to_pwrctl(pdvobj);
+       struct recv_priv        *precvpriv = &adapter->recvpriv;
+       struct usb_device       *pusbd = pdvobj->pusbdev;
+
+_func_enter_;
+
+       if (RTW_CANNOT_RX(adapter) || (precvbuf == NULL)) {
+               RT_TRACE(_module_hci_ops_os_c_,_drv_err_,("usb_read_port:( RTW_CANNOT_RX ) || precvbuf == NULL!!!\n"));
+               goto exit;
+       }
+
+       usb_init_recvbuf(adapter, precvbuf);
+
+       if (precvbuf->pskb == NULL) {
+               SIZE_PTR tmpaddr = 0;
+               SIZE_PTR alignment = 0;
+
+               if (NULL != (precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue)))
+                       goto recv_buf_hook;
+
+               #ifndef CONFIG_FIX_NR_BULKIN_BUFFER
+               precvbuf->pskb = rtw_skb_alloc(MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ);
+               #endif
+
+               if (precvbuf->pskb == NULL) {
+                       if (0)
+                               DBG_871X("usb_read_port() enqueue precvbuf=%p \n", precvbuf);
+                       /* enqueue precvbuf and wait for free skb */
+                       rtw_enqueue_recvbuf(precvbuf, &precvpriv->recv_buf_pending_queue);
+                       goto exit;
+               }
+
+               tmpaddr = (SIZE_PTR)precvbuf->pskb->data;
+               alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1);
+               skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment));
+       }
+
+recv_buf_hook:
+       precvbuf->phead = precvbuf->pskb->head;
+       precvbuf->pdata = precvbuf->pskb->data;
+       precvbuf->ptail = skb_tail_pointer(precvbuf->pskb);
+       precvbuf->pend = skb_end_pointer(precvbuf->pskb);
+       precvbuf->pbuf = precvbuf->pskb->data;
+
+       purb = precvbuf->purb;
+
+       /* translate DMA FIFO addr to pipehandle */
+       pipe = ffaddr2pipehdl(pdvobj, addr);
+
+       usb_fill_bulk_urb(purb, pusbd, pipe,
+               precvbuf->pbuf,
+               MAX_RECVBUF_SZ,
+               usb_read_port_complete,
+               precvbuf);
+
+       err = usb_submit_urb(purb, GFP_ATOMIC);
+       if (err && err != (-EPERM)) {
+               DBG_871X("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n"
+                       , err, purb->status);
+               goto exit;
+       }
+
+       ATOMIC_INC(&(precvpriv->rx_pending_cnt));
+       ret = _SUCCESS;
+
+exit:
+
+_func_exit_;
+
+       return ret;
+}
+#endif // CONFIG_USE_USB_BUFFER_ALLOC_RX
+
+#ifdef CONFIG_USB_INTERRUPT_IN_PIPE
+void usb_read_interrupt_complete(struct urb *purb, struct pt_regs *regs)
+{
+       int     err;
+       _adapter        *padapter = (_adapter *)purb->context;
+
+       if (RTW_CANNOT_RX(padapter)) {
+               DBG_8192C("%s() RX Warning! bDriverStopped(%s) OR bSurpriseRemoved(%s)\n"
+               , __func__
+               , rtw_is_drv_stopped(padapter)?"True":"False"
+               , rtw_is_surprise_removed(padapter)?"True":"False");
+
+               return;
+       }
+
+       if (purb->status == 0) {/*SUCCESS*/
+               if (purb->actual_length > INTERRUPT_MSG_FORMAT_LEN)
+                       DBG_8192C("usb_read_interrupt_complete: purb->actual_length > INTERRUPT_MSG_FORMAT_LEN(%d)\n", INTERRUPT_MSG_FORMAT_LEN);
+
+               rtw_hal_interrupt_handler(padapter, purb->actual_length, purb->transfer_buffer);
+
+               err = usb_submit_urb(purb, GFP_ATOMIC);
+               if ((err) && (err != (-EPERM)))
+                       DBG_8192C("cannot submit interrupt in-token(err = 0x%08x),urb_status = %d\n", err, purb->status);
+       } else {
+               DBG_8192C("###=> usb_read_interrupt_complete => urb status(%d)\n", purb->status);
+
+               switch (purb->status) {
+               case -EINVAL:
+               case -EPIPE:
+               case -ENODEV:
+               case -ESHUTDOWN:
+                       /*rtw_set_surprise_removed(padapter);*/
+                       /*RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete:bSurpriseRemoved=TRUE\n"));*/
+               case -ENOENT:
+                       rtw_set_drv_stopped(padapter);
+                       RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete:bDriverStopped=TRUE\n"));
+                       break;
+               case -EPROTO:
+                       break;
+               case -EINPROGRESS:
+                       DBG_8192C("ERROR: URB IS IN PROGRESS!/n");
+                       break;
+               default:
+                       break;
+               }
+       }
+}
+
+u32 usb_read_interrupt(struct intf_hdl *pintfhdl, u32 addr)
+{
+       int     err;
+       unsigned int pipe;
+       u32     ret = _SUCCESS;
+       _adapter                        *adapter = pintfhdl->padapter;
+       struct dvobj_priv       *pdvobj = adapter_to_dvobj(adapter);
+       struct recv_priv        *precvpriv = &adapter->recvpriv;
+       struct usb_device       *pusbd = pdvobj->pusbdev;
+
+_func_enter_;
+
+       if (RTW_CANNOT_RX(adapter)) {
+               RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_interrupt:( RTW_CANNOT_RX )!!!\n"));
+               return _FAIL;
+       }
+
+       /*translate DMA FIFO addr to pipehandle*/
+       pipe = ffaddr2pipehdl(pdvobj, addr);
+
+       usb_fill_int_urb(precvpriv->int_in_urb, pusbd, pipe,
+                                               precvpriv->int_in_buf,
+                                               INTERRUPT_MSG_FORMAT_LEN,
+                                               usb_read_interrupt_complete,
+                                               adapter,
+                                               1);
+
+       err = usb_submit_urb(precvpriv->int_in_urb, GFP_ATOMIC);
+       if ((err) && (err != (-EPERM))) {
+               DBG_8192C("cannot submit interrupt in-token(err = 0x%08x), urb_status = %d\n", err, precvpriv->int_in_urb->status);
+               ret = _FAIL;
+       }
+
+_func_exit_;
+       return ret;
+}
+#endif /* CONFIG_USB_INTERRUPT_IN_PIPE */