drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
   5  *
   6  ******************************************************************************/
   7 #define _USB_OPS_LINUX_C_
   8
   9 #include <drv_types.h>
  10 #include <recv_osdep.h>
  11 #include <rtw_sreset.h>
  12
  13 static void interrupt_handler_8188eu(struct adapter *adapt, u16 pkt_len, u8 *pbuf)
  14 {
  15         struct hal_data_8188e *haldata = adapt->HalData;
  16
  17         if (pkt_len != INTERRUPT_MSG_FORMAT_LEN) {
  18                 DBG_88E("%s Invalid interrupt content length (%d)!\n", __func__, pkt_len);
  19                 return;
  20         }
  21
  22         /*  HISR */
  23         memcpy(&haldata->IntArray[0], &pbuf[USB_INTR_CONTENT_HISR_OFFSET], 4);
  24         memcpy(&haldata->IntArray[1], &pbuf[USB_INTR_CONTENT_HISRE_OFFSET], 4);
  25
  26         /*  C2H Event */
  27         if (pbuf[0] != 0)
  28                 memcpy(&haldata->C2hArray[0],
  29                        &pbuf[USB_INTR_CONTENT_C2H_OFFSET], 16);
  30 }
  31
  32 static int recvbuf2recvframe(struct adapter *adapt, struct sk_buff *pskb)
  33 {
  34         u8 *pbuf;
  35         u8 shift_sz = 0;
  36         u16 pkt_cnt;
  37         u32 pkt_offset, skb_len, alloc_sz;
  38         s32 transfer_len;
  39         struct recv_stat *prxstat;
  40         struct phy_stat *pphy_status = NULL;
  41         struct sk_buff *pkt_copy = NULL;
  42         struct recv_frame *precvframe = NULL;
  43         struct rx_pkt_attrib *pattrib = NULL;
  44         struct hal_data_8188e *haldata = adapt->HalData;
  45         struct recv_priv *precvpriv = &adapt->recvpriv;
  46         struct __queue *pfree_recv_queue = &precvpriv->free_recv_queue;
  47
  48         transfer_len = (s32)pskb->len;
  49         pbuf = pskb->data;
  50
  51         prxstat = (struct recv_stat *)pbuf;
  52         pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
  53
  54         do {
  55                 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
  56                          ("%s: rxdesc=offsset 0:0x%08x, 4:0x%08x, 8:0x%08x, C:0x%08x\n",
  57                           __func__, prxstat->rxdw0, prxstat->rxdw1,
  58                           prxstat->rxdw2, prxstat->rxdw4));
  59
  60                 prxstat = (struct recv_stat *)pbuf;
  61
  62                 precvframe = rtw_alloc_recvframe(pfree_recv_queue);
  63                 if (!precvframe) {
  64                         RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
  65                                  ("%s: precvframe==NULL\n", __func__));
  66                         DBG_88E("%s()-%d: rtw_alloc_recvframe() failed! RX Drop!\n", __func__, __LINE__);
  67                         goto _exit_recvbuf2recvframe;
  68                 }
  69
  70                 INIT_LIST_HEAD(&precvframe->list);
  71
  72                 update_recvframe_attrib_88e(precvframe, prxstat);
  73
  74                 pattrib = &precvframe->attrib;
  75
  76                 if ((pattrib->crc_err) || (pattrib->icv_err)) {
  77                         DBG_88E("%s: RX Warning! crc_err=%d icv_err=%d, skip!\n", __func__, pattrib->crc_err, pattrib->icv_err);
  78
  79                         rtw_free_recvframe(precvframe, pfree_recv_queue);
  80                         goto _exit_recvbuf2recvframe;
  81                 }
  82
  83                 if ((pattrib->physt) && (pattrib->pkt_rpt_type == NORMAL_RX))
  84                         pphy_status = (struct phy_stat *)(pbuf + RXDESC_OFFSET);
  85
  86                 pkt_offset = RXDESC_SIZE + pattrib->drvinfo_sz + pattrib->shift_sz + pattrib->pkt_len;
  87
  88                 if ((pattrib->pkt_len <= 0) || (pkt_offset > transfer_len)) {
  89                         RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
  90                                  ("%s: pkt_len<=0\n", __func__));
  91                         DBG_88E("%s()-%d: RX Warning!,pkt_len<=0 or pkt_offset> transfer_len\n", __func__, __LINE__);
  92                         rtw_free_recvframe(precvframe, pfree_recv_queue);
  93                         goto _exit_recvbuf2recvframe;
  94                 }
  95
  96                 /*      Modified by Albert 20101213 */
  97                 /*      For 8 bytes IP header alignment. */
  98                 if (pattrib->qos)       /*      Qos data, wireless lan header length is 26 */
  99                         shift_sz = 6;
 100                 else
 101                         shift_sz = 0;
 102
 103                 skb_len = pattrib->pkt_len;
 104
 105                 /*  for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */
 106                 /*  modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */
 107                 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
 108                         if (skb_len <= 1650)
 109                                 alloc_sz = 1664;
 110                         else
 111                                 alloc_sz = skb_len + 14;
 112                 } else {
 113                         alloc_sz = skb_len;
 114                         /*      6 is for IP header 8 bytes alignment in QoS packet case. */
 115                         /*      8 is for skb->data 4 bytes alignment. */
 116                         alloc_sz += 14;
 117                 }
 118
 119                 pkt_copy = netdev_alloc_skb(adapt->pnetdev, alloc_sz);
 120                 if (pkt_copy) {
 121                         pkt_copy->dev = adapt->pnetdev;
 122                         precvframe->pkt = pkt_copy;
 123                         skb_reserve(pkt_copy, 8 - ((size_t)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */
 124                         skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */
 125                         memcpy(pkt_copy->data, (pbuf + pattrib->drvinfo_sz + RXDESC_SIZE), skb_len);
 126                         skb_put(precvframe->pkt, skb_len);
 127                 } else {
 128                         DBG_88E("%s: alloc_skb fail , drop frag frame\n",
 129                                 __func__);
 130                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 131                         goto _exit_recvbuf2recvframe;
 132                 }
 133
 134                 switch (haldata->UsbRxAggMode) {
 135                 case USB_RX_AGG_DMA:
 136                 case USB_RX_AGG_MIX:
 137                         pkt_offset = (u16)round_up(pkt_offset, 128);
 138                         break;
 139                 case USB_RX_AGG_USB:
 140                         pkt_offset = (u16)round_up(pkt_offset, 4);
 141                         break;
 142                 case USB_RX_AGG_DISABLE:
 143                 default:
 144                         break;
 145                 }
 146                 if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */
 147                         if (pattrib->physt)
 148                                 update_recvframe_phyinfo_88e(precvframe, pphy_status);
 149                         if (rtw_recv_entry(precvframe) != _SUCCESS) {
 150                                 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
 151                                          ("%s: rtw_recv_entry(precvframe) != _SUCCESS\n",
 152                                          __func__));
 153                         }
 154                 } else if (pattrib->pkt_rpt_type == TX_REPORT1) {
 155                         /* CCX-TXRPT ack for xmit mgmt frames. */
 156                         handle_txrpt_ccx_88e(adapt, precvframe->pkt->data);
 157                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 158                 } else if (pattrib->pkt_rpt_type == TX_REPORT2) {
 159                         ODM_RA_TxRPT2Handle_8188E(&haldata->odmpriv,
 160                                                   precvframe->pkt->data,
 161                                                   pattrib->pkt_len,
 162                                                   pattrib->MacIDValidEntry[0],
 163                                                   pattrib->MacIDValidEntry[1]);
 164                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 165                 } else if (pattrib->pkt_rpt_type == HIS_REPORT) {
 166                         interrupt_handler_8188eu(adapt, pattrib->pkt_len, precvframe->pkt->data);
 167                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 168                 }
 169                 pkt_cnt--;
 170                 transfer_len -= pkt_offset;
 171                 pbuf += pkt_offset;
 172                 precvframe = NULL;
 173                 pkt_copy = NULL;
 174
 175                 if (transfer_len > 0 && pkt_cnt == 0)
 176                         pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
 177
 178         } while ((transfer_len > 0) && (pkt_cnt > 0));
 179
 180 _exit_recvbuf2recvframe:
 181
 182         return _SUCCESS;
 183 }
 184
 185 unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
 186 {
 187         unsigned int pipe = 0, ep_num = 0;
 188         struct usb_device *pusbd = pdvobj->pusbdev;
 189
 190         if (addr == RECV_BULK_IN_ADDR) {
 191                 pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[0]);
 192         } else if (addr == RECV_INT_IN_ADDR) {
 193                 pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[1]);
 194         } else if (addr < HW_QUEUE_ENTRY) {
 195                 ep_num = pdvobj->Queue2Pipe[addr];
 196                 pipe = usb_sndbulkpipe(pusbd, ep_num);
 197         }
 198
 199         return pipe;
 200 }
 201
 202 static int usbctrl_vendorreq(struct adapter *adapt, u8 request, u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
 203 {
 204         struct dvobj_priv *dvobjpriv = adapter_to_dvobj(adapt);
 205         struct usb_device *udev = dvobjpriv->pusbdev;
 206         unsigned int pipe;
 207         int status = 0;
 208         u8 reqtype;
 209         u8 *pIo_buf;
 210         int vendorreq_times = 0;
 211
 212         if ((adapt->bSurpriseRemoved) || (adapt->pwrctrlpriv.pnp_bstop_trx)) {
 213                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 214                          ("%s:(adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 215                           __func__));
 216                 status = -EPERM;
 217                 goto exit;
 218         }
 219
 220         if (len > MAX_VENDOR_REQ_CMD_SIZE) {
 221                 DBG_88E("[%s] Buffer len error ,vendor request failed\n", __func__);
 222                 status = -EINVAL;
 223                 goto exit;
 224         }
 225
 226         if (mutex_lock_interruptible(&dvobjpriv->usb_vendor_req_mutex)) {
 227                 status = -ERESTARTSYS;
 228                 goto exit;
 229         }
 230
 231         /*  Acquire IO memory for vendorreq */
 232         pIo_buf = kmalloc(MAX_USB_IO_CTL_SIZE, GFP_ATOMIC);
 233
 234         if (!pIo_buf) {
 235                 DBG_88E("[%s] pIo_buf == NULL\n", __func__);
 236                 status = -ENOMEM;
 237                 goto release_mutex;
 238         }
 239
 240         while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
 241                 memset(pIo_buf, 0, len);
 242
 243                 if (requesttype == 0x01) {
 244                         pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
 245                         reqtype =  REALTEK_USB_VENQT_READ;
 246                 } else {
 247                         pipe = usb_sndctrlpipe(udev, 0);/* write_out */
 248                         reqtype =  REALTEK_USB_VENQT_WRITE;
 249                         memcpy(pIo_buf, pdata, len);
 250                 }
 251
 252                 status = usb_control_msg(udev, pipe, request, reqtype, value, index, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
 253
 254                 if (status == len) {   /*  Success this control transfer. */
 255                         if (requesttype == 0x01)
 256                                 memcpy(pdata, pIo_buf,  len);
 257                 } else { /*  error cases */
 258                         DBG_88E("reg 0x%x, usb %s %u fail, status:%d value=0x%x, vendorreq_times:%d\n",
 259                                 value, (requesttype == 0x01) ? "read" : "write",
 260                                 len, status, *(u32 *)pdata, vendorreq_times);
 261
 262                         if (status < 0) {
 263                                 if (status == (-ESHUTDOWN) || status == -ENODEV)
 264                                         adapt->bSurpriseRemoved = true;
 265                                 else
 266                                         adapt->HalData->srestpriv.wifi_error_status = USB_VEN_REQ_CMD_FAIL;
 267                         } else { /*  status != len && status >= 0 */
 268                                 if (status > 0) {
 269                                         if (requesttype == 0x01) {
 270                                                 /*  For Control read transfer, we have to copy the read data from pIo_buf to pdata. */
 271                                                 memcpy(pdata, pIo_buf,  len);
 272                                         }
 273                                 }
 274                         }
 275                 }
 276
 277                 /*  firmware download is checksummed, don't retry */
 278                 if ((value >= FW_8188E_START_ADDRESS && value <= FW_8188E_END_ADDRESS) || status == len)
 279                         break;
 280         }
 281         kfree(pIo_buf);
 282
 283 release_mutex:
 284         mutex_unlock(&dvobjpriv->usb_vendor_req_mutex);
 285 exit:
 286         return status;
 287 }
 288
 289 u8 usb_read8(struct adapter *adapter, u32 addr)
 290 {
 291         u8 request;
 292         u8 requesttype;
 293         u16 wvalue;
 294         u16 index;
 295         u16 len;
 296         u8 data = 0;
 297
 298         request = 0x05;
 299         requesttype = 0x01;/* read_in */
 300         index = 0;/* n/a */
 301
 302         wvalue = (u16)(addr & 0x0000ffff);
 303         len = 1;
 304
 305         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 306
 307         return data;
 308 }
 309
 310 u16 usb_read16(struct adapter *adapter, u32 addr)
 311 {
 312         u8 request;
 313         u8 requesttype;
 314         u16 wvalue;
 315         u16 index;
 316         u16 len;
 317         __le32 data;
 318
 319         request = 0x05;
 320         requesttype = 0x01;/* read_in */
 321         index = 0;/* n/a */
 322         wvalue = (u16)(addr & 0x0000ffff);
 323         len = 2;
 324         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 325
 326         return (u16)(le32_to_cpu(data) & 0xffff);
 327 }
 328
 329 u32 usb_read32(struct adapter *adapter, u32 addr)
 330 {
 331         u8 request;
 332         u8 requesttype;
 333         u16 wvalue;
 334         u16 index;
 335         u16 len;
 336         __le32 data;
 337
 338         request = 0x05;
 339         requesttype = 0x01;/* read_in */
 340         index = 0;/* n/a */
 341
 342         wvalue = (u16)(addr & 0x0000ffff);
 343         len = 4;
 344
 345         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 346
 347         return le32_to_cpu(data);
 348 }
 349
 350 static void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
 351 {
 352         struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
 353         struct adapter *adapt = (struct adapter *)precvbuf->adapter;
 354         struct recv_priv *precvpriv = &adapt->recvpriv;
 355
 356         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("%s!!!\n", __func__));
 357
 358         if (adapt->bSurpriseRemoved || adapt->bDriverStopped || adapt->bReadPortCancel) {
 359                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 360                          ("%s:bDriverStopped(%d) OR bSurpriseRemoved(%d)\n",
 361                          __func__, adapt->bDriverStopped,
 362                          adapt->bSurpriseRemoved));
 363
 364                 precvbuf->reuse = true;
 365                 DBG_88E("%s() RX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bReadPortCancel(%d)\n",
 366                         __func__, adapt->bDriverStopped,
 367                         adapt->bSurpriseRemoved, adapt->bReadPortCancel);
 368                 return;
 369         }
 370
 371         if (purb->status == 0) { /* SUCCESS */
 372                 if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)) {
 373                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 374                                  ("%s: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n",
 375                                  __func__));
 376                         precvbuf->reuse = true;
 377                         usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 378                         DBG_88E("%s()-%d: RX Warning!\n", __func__, __LINE__);
 379                 } else {
 380                         skb_put(precvbuf->pskb, purb->actual_length);
 381                         skb_queue_tail(&precvpriv->rx_skb_queue, precvbuf->pskb);
 382
 383                         if (skb_queue_len(&precvpriv->rx_skb_queue) <= 1)
 384                                 tasklet_schedule(&precvpriv->recv_tasklet);
 385
 386                         precvbuf->pskb = NULL;
 387                         precvbuf->reuse = false;
 388                         usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 389                 }
 390         } else {
 391                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 392                          ("%s : purb->status(%d) != 0\n",
 393                           __func__, purb->status));
 394
 395                 DBG_88E("###=> %s => urb status(%d)\n", __func__, purb->status);
 396                 skb_put(precvbuf->pskb, purb->actual_length);
 397                 precvbuf->pskb = NULL;
 398
 399                 switch (purb->status) {
 400                 case -EINVAL:
 401                 case -EPIPE:
 402                 case -ENODEV:
 403                 case -ESHUTDOWN:
 404                         adapt->bSurpriseRemoved = true;
 405                         /* fall through */
 406                 case -ENOENT:
 407                         adapt->bDriverStopped = true;
 408                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 409                                  ("%s:bDriverStopped=true\n", __func__));
 410                         break;
 411                 case -EPROTO:
 412                 case -EOVERFLOW:
 413                         adapt->HalData->srestpriv.wifi_error_status = USB_READ_PORT_FAIL;
 414                         precvbuf->reuse = true;
 415                         usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 416                         break;
 417                 case -EINPROGRESS:
 418                         DBG_88E("ERROR: URB IS IN PROGRESS!\n");
 419                         break;
 420                 default:
 421                         break;
 422                 }
 423         }
 424 }
 425
 426 u32 usb_read_port(struct adapter *adapter, u32 addr, struct recv_buf *precvbuf)
 427 {
 428         struct urb *purb = NULL;
 429         struct dvobj_priv *pdvobj = adapter_to_dvobj(adapter);
 430         struct recv_priv *precvpriv = &adapter->recvpriv;
 431         struct usb_device *pusbd = pdvobj->pusbdev;
 432         int err;
 433         unsigned int pipe;
 434         u32 ret = _SUCCESS;
 435
 436         if (adapter->bDriverStopped || adapter->bSurpriseRemoved ||
 437             adapter->pwrctrlpriv.pnp_bstop_trx) {
 438                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 439                          ("%s:(adapt->bDriverStopped ||adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 440                           __func__));
 441                 return _FAIL;
 442         }
 443
 444         if (!precvbuf) {
 445                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 446                          ("%s:precvbuf==NULL\n", __func__));
 447                 return _FAIL;
 448         }
 449
 450         if (!precvbuf->reuse || !precvbuf->pskb) {
 451                 precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue);
 452                 if (precvbuf->pskb)
 453                         precvbuf->reuse = true;
 454         }
 455
 456         /* re-assign for linux based on skb */
 457         if (!precvbuf->reuse || !precvbuf->pskb) {
 458                 precvbuf->pskb = netdev_alloc_skb(adapter->pnetdev, MAX_RECVBUF_SZ);
 459                 if (!precvbuf->pskb) {
 460                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("init_recvbuf(): alloc_skb fail!\n"));
 461                         DBG_88E("#### %s() alloc_skb fail!#####\n", __func__);
 462                         return _FAIL;
 463                 }
 464         } else { /* reuse skb */
 465                 precvbuf->reuse = false;
 466         }
 467
 468         purb = precvbuf->purb;
 469
 470         /* translate DMA FIFO addr to pipehandle */
 471         pipe = ffaddr2pipehdl(pdvobj, addr);
 472
 473         usb_fill_bulk_urb(purb, pusbd, pipe,
 474                           precvbuf->pskb->data,
 475                           MAX_RECVBUF_SZ,
 476                           usb_read_port_complete,
 477                           precvbuf);/* context is precvbuf */
 478
 479         err = usb_submit_urb(purb, GFP_ATOMIC);
 480         if ((err) && (err != (-EPERM))) {
 481                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 482                          ("cannot submit rx in-token(err=0x%.8x), URB_STATUS =0x%.8x",
 483                          err, purb->status));
 484                 DBG_88E("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n",
 485                         err, purb->status);
 486                 ret = _FAIL;
 487         }
 488
 489         return ret;
 490 }
 491
 492 void rtw_hal_inirp_deinit(struct adapter *padapter)
 493 {
 494         int i;
 495         struct recv_buf *precvbuf;
 496
 497         precvbuf = padapter->recvpriv.precv_buf;
 498
 499         DBG_88E("%s\n", __func__);
 500
 501         padapter->bReadPortCancel = true;
 502
 503         for (i = 0; i < NR_RECVBUFF; i++) {
 504                 precvbuf->reuse = true;
 505                 if (precvbuf->purb)
 506                         usb_kill_urb(precvbuf->purb);
 507                 precvbuf++;
 508         }
 509 }
 510
 511 int usb_write8(struct adapter *adapter, u32 addr, u8 val)
 512 {
 513         u8 request;
 514         u8 requesttype;
 515         u16 wvalue;
 516         u16 index;
 517         u16 len;
 518         u8 data;
 519
 520         request = 0x05;
 521         requesttype = 0x00;/* write_out */
 522         index = 0;/* n/a */
 523         wvalue = (u16)(addr & 0x0000ffff);
 524         len = 1;
 525         data = val;
 526         return usbctrl_vendorreq(adapter, request, wvalue,
 527                                  index, &data, len, requesttype);
 528 }
 529
 530 int usb_write16(struct adapter *adapter, u32 addr, u16 val)
 531 {
 532         u8 request;
 533         u8 requesttype;
 534         u16 wvalue;
 535         u16 index;
 536         u16 len;
 537         __le32 data;
 538
 539         request = 0x05;
 540         requesttype = 0x00;/* write_out */
 541         index = 0;/* n/a */
 542
 543         wvalue = (u16)(addr & 0x0000ffff);
 544         len = 2;
 545
 546         data = cpu_to_le32(val & 0x0000ffff);
 547
 548         return usbctrl_vendorreq(adapter, request, wvalue,
 549                                  index, &data, len, requesttype);
 550 }
 551
 552 int usb_write32(struct adapter *adapter, u32 addr, u32 val)
 553 {
 554         u8 request;
 555         u8 requesttype;
 556         u16 wvalue;
 557         u16 index;
 558         u16 len;
 559         __le32 data;
 560
 561         request = 0x05;
 562         requesttype = 0x00;/* write_out */
 563         index = 0;/* n/a */
 564
 565         wvalue = (u16)(addr & 0x0000ffff);
 566         len = 4;
 567         data = cpu_to_le32(val);
 568
 569         return usbctrl_vendorreq(adapter, request, wvalue,
 570                                  index, &data, len, requesttype);
 571 }
 572
 573 static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
 574 {
 575         struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
 576         struct adapter *padapter = pxmitbuf->padapter;
 577         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 578
 579         switch (pxmitbuf->flags) {
 580         case VO_QUEUE_INX:
 581                 pxmitpriv->voq_cnt--;
 582                 break;
 583         case VI_QUEUE_INX:
 584                 pxmitpriv->viq_cnt--;
 585                 break;
 586         case BE_QUEUE_INX:
 587                 pxmitpriv->beq_cnt--;
 588                 break;
 589         case BK_QUEUE_INX:
 590                 pxmitpriv->bkq_cnt--;
 591                 break;
 592         case HIGH_QUEUE_INX:
 593 #ifdef CONFIG_88EU_AP_MODE
 594                 rtw_chk_hi_queue_cmd(padapter);
 595 #endif
 596                 break;
 597         default:
 598                 break;
 599         }
 600
 601         if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
 602             padapter->bWritePortCancel) {
 603                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 604                          ("%s:bDriverStopped(%d) OR bSurpriseRemoved(%d)",
 605                           __func__, padapter->bDriverStopped,
 606                           padapter->bSurpriseRemoved));
 607                 DBG_88E("%s(): TX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bWritePortCancel(%d) pxmitbuf->ext_tag(%x)\n",
 608                         __func__, padapter->bDriverStopped,
 609                         padapter->bSurpriseRemoved, padapter->bReadPortCancel,
 610                         pxmitbuf->ext_tag);
 611
 612                 goto check_completion;
 613         }
 614
 615         if (purb->status) {
 616                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 617                          ("%s : purb->status(%d) != 0\n",
 618                           __func__, purb->status));
 619                 DBG_88E("###=> %s status(%d)\n", __func__, purb->status);
 620                 if ((purb->status == -EPIPE) || (purb->status == -EPROTO)) {
 621                         sreset_set_wifi_error_status(padapter, USB_WRITE_PORT_FAIL);
 622                 } else if (purb->status == -EINPROGRESS) {
 623                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 624                                  ("%s: EINPROGRESS\n", __func__));
 625                         goto check_completion;
 626                 } else if (purb->status == -ENOENT) {
 627                         DBG_88E("%s: -ENOENT\n", __func__);
 628                         goto check_completion;
 629                 } else if (purb->status == -ECONNRESET) {
 630                         DBG_88E("%s: -ECONNRESET\n", __func__);
 631                         goto check_completion;
 632                 } else if (purb->status == -ESHUTDOWN) {
 633                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 634                                  ("%s: ESHUTDOWN\n", __func__));
 635                         padapter->bDriverStopped = true;
 636                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 637                                  ("%s:bDriverStopped = true\n", __func__));
 638                         goto check_completion;
 639                 } else {
 640                         padapter->bSurpriseRemoved = true;
 641                         DBG_88E("bSurpriseRemoved = true\n");
 642                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 643                                  ("%s:bSurpriseRemoved = true\n", __func__));
 644                         goto check_completion;
 645                 }
 646         }
 647
 648 check_completion:
 649         rtw_sctx_done_err(&pxmitbuf->sctx,
 650                           purb->status ? RTW_SCTX_DONE_WRITE_PORT_ERR :
 651                           RTW_SCTX_DONE_SUCCESS);
 652
 653         rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
 654
 655         tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
 656 }
 657
 658 u32 usb_write_port(struct adapter *padapter, u32 addr, u32 cnt, struct xmit_buf *xmitbuf)
 659 {
 660         unsigned long irqL;
 661         unsigned int pipe;
 662         int status;
 663         u32 ret = _FAIL;
 664         struct urb *purb = NULL;
 665         struct dvobj_priv *pdvobj = adapter_to_dvobj(padapter);
 666         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 667         struct xmit_frame *pxmitframe = (struct xmit_frame *)xmitbuf->priv_data;
 668         struct usb_device *pusbd = pdvobj->pusbdev;
 669
 670         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("+%s\n", __func__));
 671
 672         if ((padapter->bDriverStopped) || (padapter->bSurpriseRemoved) ||
 673             (padapter->pwrctrlpriv.pnp_bstop_trx)) {
 674                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 675                          ("%s:( padapter->bDriverStopped ||padapter->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 676                           __func__));
 677                 rtw_sctx_done_err(&xmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
 678                 goto exit;
 679         }
 680
 681         spin_lock_irqsave(&pxmitpriv->lock, irqL);
 682
 683         switch (addr) {
 684         case VO_QUEUE_INX:
 685                 pxmitpriv->voq_cnt++;
 686                 xmitbuf->flags = VO_QUEUE_INX;
 687                 break;
 688         case VI_QUEUE_INX:
 689                 pxmitpriv->viq_cnt++;
 690                 xmitbuf->flags = VI_QUEUE_INX;
 691                 break;
 692         case BE_QUEUE_INX:
 693                 pxmitpriv->beq_cnt++;
 694                 xmitbuf->flags = BE_QUEUE_INX;
 695                 break;
 696         case BK_QUEUE_INX:
 697                 pxmitpriv->bkq_cnt++;
 698                 xmitbuf->flags = BK_QUEUE_INX;
 699                 break;
 700         case HIGH_QUEUE_INX:
 701                 xmitbuf->flags = HIGH_QUEUE_INX;
 702                 break;
 703         default:
 704                 xmitbuf->flags = MGT_QUEUE_INX;
 705                 break;
 706         }
 707
 708         spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
 709
 710         purb    = xmitbuf->pxmit_urb[0];
 711
 712         /* translate DMA FIFO addr to pipehandle */
 713         pipe = ffaddr2pipehdl(pdvobj, addr);
 714
 715         usb_fill_bulk_urb(purb, pusbd, pipe,
 716                           pxmitframe->buf_addr, /*  xmitbuf->pbuf */
 717                           cnt,
 718                           usb_write_port_complete,
 719                           xmitbuf);/* context is xmitbuf */
 720
 721         status = usb_submit_urb(purb, GFP_ATOMIC);
 722         if (status) {
 723                 rtw_sctx_done_err(&xmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
 724                 DBG_88E("%s, status =%d\n", __func__, status);
 725                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 726                          ("%s(): usb_submit_urb, status =%x\n",
 727                           __func__, status));
 728
 729                 switch (status) {
 730                 case -ENODEV:
 731                         padapter->bDriverStopped = true;
 732                         break;
 733                 default:
 734                         break;
 735                 }
 736                 goto exit;
 737         }
 738
 739         ret = _SUCCESS;
 740
 741 /*    We add the URB_ZERO_PACKET flag to urb so that the host will send the zero packet automatically. */
 742
 743         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("-%s\n", __func__));
 744
 745 exit:
 746         if (ret != _SUCCESS)
 747                 rtw_free_xmitbuf(pxmitpriv, xmitbuf);
 748         return ret;
 749 }
 750
 751 void usb_write_port_cancel(struct adapter *padapter)
 752 {
 753         int i, j;
 754         struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
 755
 756         DBG_88E("%s\n", __func__);
 757
 758         padapter->bWritePortCancel = true;
 759
 760         for (i = 0; i < NR_XMITBUFF; i++) {
 761                 for (j = 0; j < 8; j++) {
 762                         if (pxmitbuf->pxmit_urb[j])
 763                                 usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 764                 }
 765                 pxmitbuf++;
 766         }
 767
 768         pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmit_extbuf;
 769         for (i = 0; i < NR_XMIT_EXTBUFF; i++) {
 770                 for (j = 0; j < 8; j++) {
 771                         if (pxmitbuf->pxmit_urb[j])
 772                                 usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 773                 }
 774                 pxmitbuf++;
 775         }
 776 }
 777
 778 void rtl8188eu_recv_tasklet(void *priv)
 779 {
 780         struct sk_buff *pskb;
 781         struct adapter *adapt = priv;
 782         struct recv_priv *precvpriv = &adapt->recvpriv;
 783
 784         while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
 785                 if ((adapt->bDriverStopped) || (adapt->bSurpriseRemoved)) {
 786                         DBG_88E("recv_tasklet => bDriverStopped or bSurpriseRemoved\n");
 787                         dev_kfree_skb_any(pskb);
 788                         break;
 789                 }
 790                 recvbuf2recvframe(adapt, pskb);
 791                 skb_reset_tail_pointer(pskb);
 792                 pskb->len = 0;
 793                 skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
 794         }
 795 }
 796
 797 void rtl8188eu_xmit_tasklet(void *priv)
 798 {
 799         struct adapter *adapt = priv;
 800         struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
 801
 802         if (check_fwstate(&adapt->mlmepriv, _FW_UNDER_SURVEY))
 803                 return;
 804
 805         while (1) {
 806                 if ((adapt->bDriverStopped) ||
 807                     (adapt->bSurpriseRemoved) ||
 808                     (adapt->bWritePortCancel)) {
 809                         DBG_88E("xmit_tasklet => bDriverStopped or bSurpriseRemoved or bWritePortCancel\n");
 810                         break;
 811                 }
 812
 813                 if (!rtl8188eu_xmitframe_complete(adapt, pxmitpriv))
 814                         break;
 815         }
 816 }