kernel/drivers/staging/rtl8723au/hal/usb_ops_linux.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  ******************************************************************************/
  15 #define _HCI_OPS_OS_C_
  16
  17 #include <osdep_service.h>
  18 #include <drv_types.h>
  19 #include <osdep_intf.h>
  20 #include <usb_ops.h>
  21 #include <recv_osdep.h>
  22 #include <rtl8723a_hal.h>
  23 #include <rtl8723a_recv.h>
  24
  25 u8 rtl8723au_read8(struct rtw_adapter *padapter, u16 addr)
  26 {
  27         struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
  28         struct usb_device *udev = pdvobjpriv->pusbdev;
  29         int len;
  30         u8 data;
  31
  32         mutex_lock(&pdvobjpriv->usb_vendor_req_mutex);
  33         len = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  34                               REALTEK_USB_VENQT_CMD_REQ, REALTEK_USB_VENQT_READ,
  35                               addr, 0, &pdvobjpriv->usb_buf.val8, sizeof(data),
  36                               RTW_USB_CONTROL_MSG_TIMEOUT);
  37
  38         data = pdvobjpriv->usb_buf.val8;
  39         mutex_unlock(&pdvobjpriv->usb_vendor_req_mutex);
  40
  41         return data;
  42 }
  43
  44 u16 rtl8723au_read16(struct rtw_adapter *padapter, u16 addr)
  45 {
  46         struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
  47         struct usb_device *udev = pdvobjpriv->pusbdev;
  48         int len;
  49         u16 data;
  50
  51         mutex_lock(&pdvobjpriv->usb_vendor_req_mutex);
  52         len = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  53                               REALTEK_USB_VENQT_CMD_REQ, REALTEK_USB_VENQT_READ,
  54                               addr, 0, &pdvobjpriv->usb_buf.val16, sizeof(data),
  55                               RTW_USB_CONTROL_MSG_TIMEOUT);
  56
  57         data = le16_to_cpu(pdvobjpriv->usb_buf.val16);
  58         mutex_unlock(&pdvobjpriv->usb_vendor_req_mutex);
  59
  60         return data;
  61 }
  62
  63 u32 rtl8723au_read32(struct rtw_adapter *padapter, u16 addr)
  64 {
  65         struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
  66         struct usb_device *udev = pdvobjpriv->pusbdev;
  67         int len;
  68         u32 data;
  69
  70         mutex_lock(&pdvobjpriv->usb_vendor_req_mutex);
  71         len = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  72                               REALTEK_USB_VENQT_CMD_REQ, REALTEK_USB_VENQT_READ,
  73                               addr, 0, &pdvobjpriv->usb_buf.val32, sizeof(data),
  74                               RTW_USB_CONTROL_MSG_TIMEOUT);
  75
  76         data = le32_to_cpu(pdvobjpriv->usb_buf.val32);
  77         mutex_unlock(&pdvobjpriv->usb_vendor_req_mutex);
  78
  79         return data;
  80 }
  81
  82 int rtl8723au_write8(struct rtw_adapter *padapter, u16 addr, u8 val)
  83 {
  84         struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
  85         struct usb_device *udev = pdvobjpriv->pusbdev;
  86         int ret;
  87
  88         mutex_lock(&pdvobjpriv->usb_vendor_req_mutex);
  89         pdvobjpriv->usb_buf.val8 = val;
  90
  91         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  92                               REALTEK_USB_VENQT_CMD_REQ,
  93                               REALTEK_USB_VENQT_WRITE,
  94                               addr, 0, &pdvobjpriv->usb_buf.val8, sizeof(val),
  95                               RTW_USB_CONTROL_MSG_TIMEOUT);
  96
  97         if (ret != sizeof(val))
  98                 ret = _FAIL;
  99         else
 100                 ret = _SUCCESS;
 101
 102         mutex_unlock(&pdvobjpriv->usb_vendor_req_mutex);
 103         return ret;
 104 }
 105
 106 int rtl8723au_write16(struct rtw_adapter *padapter, u16 addr, u16 val)
 107 {
 108         struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
 109         struct usb_device *udev = pdvobjpriv->pusbdev;
 110         int ret;
 111
 112         mutex_lock(&pdvobjpriv->usb_vendor_req_mutex);
 113         pdvobjpriv->usb_buf.val16 = cpu_to_le16(val);
 114
 115         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 116                               REALTEK_USB_VENQT_CMD_REQ,
 117                               REALTEK_USB_VENQT_WRITE,
 118                               addr, 0, &pdvobjpriv->usb_buf.val16, sizeof(val),
 119                               RTW_USB_CONTROL_MSG_TIMEOUT);
 120
 121         if (ret != sizeof(val))
 122                 ret = _FAIL;
 123         else
 124                 ret = _SUCCESS;
 125
 126         mutex_unlock(&pdvobjpriv->usb_vendor_req_mutex);
 127         return ret;
 128 }
 129
 130 int rtl8723au_write32(struct rtw_adapter *padapter, u16 addr, u32 val)
 131 {
 132         struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
 133         struct usb_device *udev = pdvobjpriv->pusbdev;
 134         int ret;
 135
 136         mutex_lock(&pdvobjpriv->usb_vendor_req_mutex);
 137         pdvobjpriv->usb_buf.val32 = cpu_to_le32(val);
 138
 139         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 140                               REALTEK_USB_VENQT_CMD_REQ,
 141                               REALTEK_USB_VENQT_WRITE,
 142                               addr, 0, &pdvobjpriv->usb_buf.val32, sizeof(val),
 143                               RTW_USB_CONTROL_MSG_TIMEOUT);
 144
 145         if (ret != sizeof(val))
 146                 ret = _FAIL;
 147         else
 148                 ret = _SUCCESS;
 149
 150         mutex_unlock(&pdvobjpriv->usb_vendor_req_mutex);
 151         return ret;
 152 }
 153
 154 int rtl8723au_writeN(struct rtw_adapter *padapter, u16 addr, u16 len, u8 *buf)
 155 {
 156         struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
 157         struct usb_device *udev = pdvobjpriv->pusbdev;
 158         int ret;
 159
 160         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 161                               REALTEK_USB_VENQT_CMD_REQ,
 162                               REALTEK_USB_VENQT_WRITE,
 163                               addr, 0, buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
 164
 165         if (ret != len)
 166                 return _FAIL;
 167         return _SUCCESS;
 168 }
 169
 170 /*
 171  * Description:
 172  *      Recognize the interrupt content by reading the interrupt
 173  *      register or content and masking interrupt mask (IMR)
 174  *      if it is our NIC's interrupt. After recognizing, we may clear
 175  *      the all interrupts (ISR).
 176  * Arguments:
 177  *      [in] Adapter -
 178  *              The adapter context.
 179  *      [in] pContent -
 180  *              Under PCI interface, this field is ignord.
 181  *              Under USB interface, the content is the interrupt
 182  *              content pointer.
 183  *              Under SDIO interface, this is the interrupt type which
 184  *              is Local interrupt or system interrupt.
 185  *      [in] ContentLen -
 186  *              The length in byte of pContent.
 187  * Return:
 188  *      If any interrupt matches the mask (IMR), return true, and
 189  *      return false otherwise.
 190  */
 191 static bool
 192 InterruptRecognized8723AU(struct rtw_adapter *Adapter, void *pContent,
 193                           u32 ContentLen)
 194 {
 195         struct hal_data_8723a   *pHalData = GET_HAL_DATA(Adapter);
 196         u8 *buffer = (u8 *)pContent;
 197         struct reportpwrstate_parm report;
 198
 199         memcpy(&pHalData->IntArray[0], &buffer[USB_INTR_CONTENT_HISR_OFFSET],
 200                4);
 201         pHalData->IntArray[0] &= pHalData->IntrMask[0];
 202
 203         /* For HISR extension. Added by tynli. 2009.10.07. */
 204         memcpy(&pHalData->IntArray[1],
 205                &buffer[USB_INTR_CONTENT_HISRE_OFFSET], 4);
 206         pHalData->IntArray[1] &= pHalData->IntrMask[1];
 207
 208         /* We sholud remove this function later because DDK suggest
 209          * not to executing too many operations in MPISR  */
 210
 211         memcpy(&report.state, &buffer[USB_INTR_CPWM_OFFSET], 1);
 212
 213         return (pHalData->IntArray[0] & pHalData->IntrMask[0]) != 0 ||
 214                 (pHalData->IntArray[1] & pHalData->IntrMask[1]) != 0;
 215 }
 216
 217 static void usb_read_interrupt_complete(struct urb *purb)
 218 {
 219         int err;
 220         struct rtw_adapter *padapter = (struct rtw_adapter *)purb->context;
 221
 222         if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
 223             padapter->bReadPortCancel) {
 224                 DBG_8723A("%s() RX Warning! bDriverStopped(%d) OR "
 225                           "bSurpriseRemoved(%d) bReadPortCancel(%d)\n",
 226                           __func__, padapter->bDriverStopped,
 227                           padapter->bSurpriseRemoved,
 228                           padapter->bReadPortCancel);
 229                 return;
 230         }
 231
 232         if (purb->status == 0) {
 233                 struct c2h_evt_hdr *c2h_evt;
 234
 235                 c2h_evt = (struct c2h_evt_hdr *)purb->transfer_buffer;
 236
 237                 if (purb->actual_length > USB_INTR_CONTENT_LENGTH) {
 238                         DBG_8723A("usb_read_interrupt_complete: purb->actual_"
 239                                   "length > USB_INTR_CONTENT_LENGTH\n");
 240                         goto urb_submit;
 241                 }
 242
 243                 InterruptRecognized8723AU(padapter, purb->transfer_buffer,
 244                                           purb->actual_length);
 245
 246                 if (c2h_evt_exist(c2h_evt)) {
 247                         if (c2h_id_filter_ccx_8723a(c2h_evt->id)) {
 248                                 /* Handle CCX report here */
 249                                 handle_txrpt_ccx_8723a(padapter, (void *)
 250                                                        c2h_evt->payload);
 251                                 schedule_work(&padapter->evtpriv.irq_wk);
 252                         } else {
 253                                 struct evt_work *c2w;
 254                                 int res;
 255
 256                                 c2w = kmalloc(sizeof(struct evt_work),
 257                                                 GFP_ATOMIC);
 258
 259                                 if (!c2w) {
 260                                         printk(KERN_WARNING "%s: unable to "
 261                                                "allocate work buffer\n",
 262                                                __func__);
 263                                         goto urb_submit;
 264                                 }
 265
 266                                 c2w->adapter = padapter;
 267                                 INIT_WORK(&c2w->work, rtw_evt_work);
 268                                 memcpy(c2w->u.buf, purb->transfer_buffer, 16);
 269
 270                                 res = queue_work(padapter->evtpriv.wq,
 271                                                  &c2w->work);
 272
 273                                 if (!res) {
 274                                         printk(KERN_ERR "%s: Call to "
 275                                                "queue_work() failed\n",
 276                                                __func__);
 277                                         kfree(c2w);
 278                                         goto urb_submit;
 279                                 }
 280                         }
 281                 }
 282
 283 urb_submit:
 284                 err = usb_submit_urb(purb, GFP_ATOMIC);
 285                 if (err && (err != -EPERM)) {
 286                         DBG_8723A("cannot submit interrupt in-token(err = "
 287                                   "0x%08x), urb_status = %d\n",
 288                                   err, purb->status);
 289                 }
 290         } else {
 291                 DBG_8723A("###=> usb_read_interrupt_complete => urb "
 292                           "status(%d)\n", purb->status);
 293
 294                 switch (purb->status) {
 295                 case -EINVAL:
 296                 case -EPIPE:
 297                 case -ENODEV:
 298                 case -ESHUTDOWN:
 299                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 300                                  "usb_read_port_complete:bSurpriseRemoved =true\n");
 301                         /* Fall Through here */
 302                 case -ENOENT:
 303                         padapter->bDriverStopped = true;
 304                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 305                                  "usb_read_port_complete:bDriverStopped =true\n");
 306                         break;
 307                 case -EPROTO:
 308                         break;
 309                 case -EINPROGRESS:
 310                         DBG_8723A("ERROR: URB IS IN PROGRESS!\n");
 311                         break;
 312                 default:
 313                         break;
 314                 }
 315         }
 316 }
 317
 318 int rtl8723au_read_interrupt(struct rtw_adapter *adapter)
 319 {
 320         int err;
 321         unsigned int pipe;
 322         int ret = _SUCCESS;
 323         struct dvobj_priv *pdvobj = adapter_to_dvobj(adapter);
 324         struct recv_priv *precvpriv = &adapter->recvpriv;
 325         struct usb_device *pusbd = pdvobj->pusbdev;
 326
 327         /* translate DMA FIFO addr to pipehandle */
 328         pipe = usb_rcvintpipe(pusbd, pdvobj->RtInPipe[1]);
 329
 330         usb_fill_int_urb(precvpriv->int_in_urb, pusbd, pipe,
 331                          precvpriv->int_in_buf, USB_INTR_CONTENT_LENGTH,
 332                          usb_read_interrupt_complete, adapter, 1);
 333
 334         err = usb_submit_urb(precvpriv->int_in_urb, GFP_ATOMIC);
 335         if (err && (err != -EPERM)) {
 336                 DBG_8723A("cannot submit interrupt in-token(err = 0x%08x),"
 337                           "urb_status = %d\n", err,
 338                           precvpriv->int_in_urb->status);
 339                 ret = _FAIL;
 340         }
 341
 342         return ret;
 343 }
 344
 345 static int recvbuf2recvframe(struct rtw_adapter *padapter, struct sk_buff *pskb)
 346 {
 347         u8      *pbuf;
 348         u8      shift_sz = 0;
 349         u16     pkt_cnt;
 350         u32     pkt_offset, skb_len, alloc_sz;
 351         int     transfer_len;
 352         struct recv_stat *prxstat;
 353         struct phy_stat *pphy_info;
 354         struct sk_buff *pkt_copy;
 355         struct recv_frame *precvframe;
 356         struct rx_pkt_attrib *pattrib;
 357         struct recv_priv *precvpriv = &padapter->recvpriv;
 358         struct rtw_queue *pfree_recv_queue = &precvpriv->free_recv_queue;
 359
 360         transfer_len = (int)pskb->len;
 361         pbuf = pskb->data;
 362
 363         prxstat = (struct recv_stat *)pbuf;
 364         pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
 365
 366         do {
 367                 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
 368                          "recvbuf2recvframe: rxdesc = offsset 0:0x%08x, 4:0x%08x, 8:0x%08x, C:0x%08x\n",
 369                          prxstat->rxdw0, prxstat->rxdw1,
 370                          prxstat->rxdw2, prxstat->rxdw4);
 371
 372                 prxstat = (struct recv_stat *)pbuf;
 373
 374                 precvframe = rtw_alloc_recvframe23a(pfree_recv_queue);
 375                 if (!precvframe) {
 376                         RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
 377                                  "recvbuf2recvframe: precvframe == NULL\n");
 378                         DBG_8723A("%s()-%d: rtw_alloc_recvframe23a() failed! RX "
 379                                   "Drop!\n", __func__, __LINE__);
 380                         goto _exit_recvbuf2recvframe;
 381                 }
 382
 383                 INIT_LIST_HEAD(&precvframe->list);
 384
 385                 update_recvframe_attrib(precvframe, prxstat);
 386
 387                 pattrib = &precvframe->attrib;
 388
 389                 if (pattrib->crc_err) {
 390                         DBG_8723A("%s()-%d: RX Warning! rx CRC ERROR !!\n",
 391                                   __func__, __LINE__);
 392                         rtw_free_recvframe23a(precvframe);
 393                         goto _exit_recvbuf2recvframe;
 394                 }
 395
 396                 pkt_offset = RXDESC_SIZE + pattrib->drvinfo_sz +
 397                         pattrib->shift_sz + pattrib->pkt_len;
 398
 399                 if (pattrib->pkt_len <= 0 || pkt_offset > transfer_len) {
 400                         RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
 401                                  "recvbuf2recvframe: pkt_len<= 0\n");
 402                         DBG_8723A("%s()-%d: RX Warning!\n",
 403                                   __func__, __LINE__);
 404                         rtw_free_recvframe23a(precvframe);
 405                         goto _exit_recvbuf2recvframe;
 406                 }
 407
 408                 /*      Modified by Albert 20101213 */
 409                 /*      For 8 bytes IP header alignment. */
 410                 /*      Qos data, wireless lan header length is 26 */
 411                 if (pattrib->qos)
 412                         shift_sz = 6;
 413                 else
 414                         shift_sz = 0;
 415
 416                 skb_len = pattrib->pkt_len;
 417
 418                 /* for first fragment packet, driver need allocate
 419                  * 1536+drvinfo_sz+RXDESC_SIZE to defrag packet.
 420                  * modify alloc_sz for recvive crc error packet
 421                  * by thomas 2011-06-02 */
 422                 if (pattrib->mfrag == 1 && pattrib->frag_num == 0) {
 423                         /* alloc_sz = 1664;     1664 is 128 alignment. */
 424                         if (skb_len <= 1650)
 425                                 alloc_sz = 1664;
 426                         else
 427                                 alloc_sz = skb_len + 14;
 428                 } else {
 429                         alloc_sz = skb_len;
 430                 /*  6 is for IP header 8 bytes alignment in QoS packet case. */
 431                 /*  8 is for skb->data 4 bytes alignment. */
 432                         alloc_sz += 14;
 433                 }
 434
 435                 pkt_copy = netdev_alloc_skb(padapter->pnetdev, alloc_sz);
 436                 if (pkt_copy) {
 437                         pkt_copy->dev = padapter->pnetdev;
 438                         precvframe->pkt = pkt_copy;
 439                         /* force pkt_copy->data at 8-byte alignment address */
 440                         skb_reserve(pkt_copy, 8 -
 441                                     ((unsigned long)(pkt_copy->data) & 7));
 442                         /*force ip_hdr at 8-byte alignment address
 443                           according to shift_sz. */
 444                         skb_reserve(pkt_copy, shift_sz);
 445                         memcpy(pkt_copy->data, pbuf + pattrib->shift_sz +
 446                                pattrib->drvinfo_sz + RXDESC_SIZE, skb_len);
 447                         skb_put(pkt_copy, skb_len);
 448                 } else {
 449                         if (pattrib->mfrag == 1 && pattrib->frag_num == 0) {
 450                                 DBG_8723A("recvbuf2recvframe: alloc_skb fail, "
 451                                           "drop frag frame \n");
 452                                 rtw_free_recvframe23a(precvframe);
 453                                 goto _exit_recvbuf2recvframe;
 454                         }
 455
 456                         precvframe->pkt = skb_clone(pskb, GFP_ATOMIC);
 457                         if (!precvframe->pkt) {
 458                                 DBG_8723A("recvbuf2recvframe: skb_clone "
 459                                           "fail\n");
 460                                 rtw_free_recvframe23a(precvframe);
 461                                 goto _exit_recvbuf2recvframe;
 462                         }
 463                 }
 464
 465                 if (pattrib->physt) {
 466                         pphy_info = (struct phy_stat *)(pbuf + RXDESC_OFFSET);
 467                         update_recvframe_phyinfo(precvframe, pphy_info);
 468                 }
 469
 470                 if (rtw_recv_entry23a(precvframe) != _SUCCESS)
 471                         RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
 472                                  "recvbuf2recvframe: rtw_recv_entry23a(precvframe) != _SUCCESS\n");
 473
 474                 pkt_cnt--;
 475                 transfer_len -= pkt_offset;
 476                 pbuf += pkt_offset;
 477                 precvframe = NULL;
 478                 pkt_copy = NULL;
 479
 480                 if (transfer_len > 0 && pkt_cnt == 0)
 481                         pkt_cnt = (le32_to_cpu(prxstat->rxdw2)>>16) & 0xff;
 482
 483         } while (transfer_len > 0 && pkt_cnt > 0);
 484
 485 _exit_recvbuf2recvframe:
 486
 487         return _SUCCESS;
 488 }
 489
 490 void rtl8723au_recv_tasklet(void *priv)
 491 {
 492         struct sk_buff *pskb;
 493         struct rtw_adapter *padapter = (struct rtw_adapter *)priv;
 494         struct recv_priv *precvpriv = &padapter->recvpriv;
 495
 496         while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
 497                 if (padapter->bDriverStopped || padapter->bSurpriseRemoved) {
 498                         DBG_8723A("recv_tasklet => bDriverStopped or "
 499                                   "bSurpriseRemoved \n");
 500                         dev_kfree_skb_any(pskb);
 501                         break;
 502                 }
 503
 504                 recvbuf2recvframe(padapter, pskb);
 505                 skb_reset_tail_pointer(pskb);
 506
 507                 pskb->len = 0;
 508
 509                 skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
 510         }
 511 }
 512
 513 static void usb_read_port_complete(struct urb *purb)
 514 {
 515         struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
 516         struct rtw_adapter *padapter = (struct rtw_adapter *)precvbuf->adapter;
 517         struct recv_priv *precvpriv = &padapter->recvpriv;
 518
 519         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 520                  "usb_read_port_complete!!!\n");
 521
 522         precvpriv->rx_pending_cnt--;
 523
 524         if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
 525             padapter->bReadPortCancel) {
 526                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 527                          "usb_read_port_complete:bDriverStopped(%d) OR bSurpriseRemoved(%d)\n",
 528                          padapter->bDriverStopped, padapter->bSurpriseRemoved);
 529
 530                 DBG_8723A("%s()-%d: RX Warning! bDriverStopped(%d) OR "
 531                           "bSurpriseRemoved(%d) bReadPortCancel(%d)\n",
 532                           __func__, __LINE__, padapter->bDriverStopped,
 533                           padapter->bSurpriseRemoved, padapter->bReadPortCancel);
 534                 return;
 535         }
 536
 537         if (purb->status == 0) {
 538                 if (purb->actual_length > MAX_RECVBUF_SZ ||
 539                     purb->actual_length < RXDESC_SIZE) {
 540                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 541                                  "usb_read_port_complete: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n");
 542                         rtl8723au_read_port(padapter, 0, precvbuf);
 543                         DBG_8723A("%s()-%d: RX Warning!\n",
 544                                   __func__, __LINE__);
 545                 } else {
 546                         rtw_reset_continual_urb_error(
 547                                 adapter_to_dvobj(padapter));
 548
 549                         skb_put(precvbuf->pskb, purb->actual_length);
 550                         skb_queue_tail(&precvpriv->rx_skb_queue,
 551                                        precvbuf->pskb);
 552
 553                         if (skb_queue_len(&precvpriv->rx_skb_queue) <= 1)
 554                                 tasklet_schedule(&precvpriv->recv_tasklet);
 555
 556                         precvbuf->pskb = NULL;
 557                         rtl8723au_read_port(padapter, 0, precvbuf);
 558                 }
 559         } else {
 560                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 561                          "usb_read_port_complete : purb->status(%d) != 0\n",
 562                          purb->status);
 563                 skb_put(precvbuf->pskb, purb->actual_length);
 564                 precvbuf->pskb = NULL;
 565
 566                 DBG_8723A("###=> usb_read_port_complete => urb status(%d)\n",
 567                           purb->status);
 568
 569                 if (rtw_inc_and_chk_continual_urb_error(
 570                             adapter_to_dvobj(padapter))) {
 571                         padapter->bSurpriseRemoved = true;
 572                 }
 573
 574                 switch (purb->status) {
 575                 case -EINVAL:
 576                 case -EPIPE:
 577                 case -ENODEV:
 578                 case -ESHUTDOWN:
 579                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 580                                  "usb_read_port_complete:bSurpriseRemoved = true\n");
 581                         /* Intentional fall through here */
 582                 case -ENOENT:
 583                         padapter->bDriverStopped = true;
 584                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 585                                  "usb_read_port_complete:bDriverStopped = true\n");
 586                         break;
 587                 case -EPROTO:
 588                 case -EOVERFLOW:
 589                         rtl8723au_read_port(padapter, 0, precvbuf);
 590                         break;
 591                 case -EINPROGRESS:
 592                         DBG_8723A("ERROR: URB IS IN PROGRESS!\n");
 593                         break;
 594                 default:
 595                         break;
 596                 }
 597         }
 598 }
 599
 600 int rtl8723au_read_port(struct rtw_adapter *adapter, u32 cnt,
 601                         struct recv_buf *precvbuf)
 602 {
 603         struct urb *purb;
 604         struct dvobj_priv *pdvobj = adapter_to_dvobj(adapter);
 605         struct recv_priv *precvpriv = &adapter->recvpriv;
 606         struct usb_device *pusbd = pdvobj->pusbdev;
 607         int err;
 608         unsigned int pipe;
 609         unsigned long tmpaddr;
 610         unsigned long alignment;
 611         int ret = _SUCCESS;
 612
 613         if (adapter->bDriverStopped || adapter->bSurpriseRemoved) {
 614                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 615                          "usb_read_port:(padapter->bDriverStopped ||padapter->bSurpriseRemoved)!!!\n");
 616                 return _FAIL;
 617         }
 618
 619         if (!precvbuf) {
 620                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 621                          "usb_read_port:precvbuf == NULL\n");
 622                 return _FAIL;
 623         }
 624
 625         if (!precvbuf->pskb)
 626                 precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue);
 627
 628         /* re-assign for linux based on skb */
 629         if (!precvbuf->pskb) {
 630                 precvbuf->pskb = netdev_alloc_skb(adapter->pnetdev, MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ);
 631                 if (precvbuf->pskb == NULL) {
 632                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 633                                  "init_recvbuf(): alloc_skb fail!\n");
 634                         return _FAIL;
 635                 }
 636
 637                 tmpaddr = (unsigned long)precvbuf->pskb->data;
 638                 alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1);
 639                 skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment));
 640         }
 641
 642         precvpriv->rx_pending_cnt++;
 643
 644         purb = precvbuf->purb;
 645
 646         /* translate DMA FIFO addr to pipehandle */
 647         pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[0]);
 648
 649         usb_fill_bulk_urb(purb, pusbd, pipe, precvbuf->pskb->data,
 650                           MAX_RECVBUF_SZ, usb_read_port_complete,
 651                           precvbuf);/* context is precvbuf */
 652
 653         err = usb_submit_urb(purb, GFP_ATOMIC);
 654         if ((err) && (err != -EPERM)) {
 655                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 656                          "cannot submit rx in-token(err = 0x%.8x), URB_STATUS = 0x%.8x\n",
 657                          err, purb->status);
 658                 DBG_8723A("cannot submit rx in-token(err = 0x%08x), urb_status "
 659                           "= %d\n", err, purb->status);
 660                 ret = _FAIL;
 661         }
 662         return ret;
 663 }
 664
 665 void rtl8723au_xmit_tasklet(void *priv)
 666 {
 667         int ret;
 668         struct rtw_adapter *padapter = (struct rtw_adapter *)priv;
 669         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 670
 671         if (check_fwstate(&padapter->mlmepriv, _FW_UNDER_SURVEY))
 672                 return;
 673
 674         while (1) {
 675                 if (padapter->bDriverStopped || padapter->bSurpriseRemoved ||
 676                     padapter->bWritePortCancel) {
 677                         DBG_8723A("xmit_tasklet => bDriverStopped or "
 678                                   "bSurpriseRemoved or bWritePortCancel\n");
 679                         break;
 680                 }
 681
 682                 ret = rtl8723au_xmitframe_complete(padapter, pxmitpriv, NULL);
 683
 684                 if (!ret)
 685                         break;
 686         }
 687 }
 688
 689 void rtl8723au_set_hw_type(struct rtw_adapter *padapter)
 690 {
 691         padapter->chip_type = RTL8723A;
 692         padapter->HardwareType = HARDWARE_TYPE_RTL8723AU;
 693         DBG_8723A("CHIP TYPE: RTL8723A\n");
 694 }