linux/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
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   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
  13static 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
  32static 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                        skb_put_data(pkt_copy, (pbuf + pattrib->drvinfo_sz + RXDESC_SIZE), skb_len);
 126                } else {
 127                        DBG_88E("%s: alloc_skb fail , drop frag frame\n",
 128                                __func__);
 129                        rtw_free_recvframe(precvframe, pfree_recv_queue);
 130                        goto _exit_recvbuf2recvframe;
 131                }
 132
 133                switch (haldata->UsbRxAggMode) {
 134                case USB_RX_AGG_DMA:
 135                case USB_RX_AGG_MIX:
 136                        pkt_offset = (u16)round_up(pkt_offset, 128);
 137                        break;
 138                case USB_RX_AGG_USB:
 139                        pkt_offset = (u16)round_up(pkt_offset, 4);
 140                        break;
 141                case USB_RX_AGG_DISABLE:
 142                default:
 143                        break;
 144                }
 145                if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */
 146                        if (pattrib->physt)
 147                                update_recvframe_phyinfo_88e(precvframe, pphy_status);
 148                        if (rtw_recv_entry(precvframe) != _SUCCESS) {
 149                                RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
 150                                         ("%s: rtw_recv_entry(precvframe) != _SUCCESS\n",
 151                                         __func__));
 152                        }
 153                } else if (pattrib->pkt_rpt_type == TX_REPORT1) {
 154                        /* CCX-TXRPT ack for xmit mgmt frames. */
 155                        handle_txrpt_ccx_88e(adapt, precvframe->pkt->data);
 156                        rtw_free_recvframe(precvframe, pfree_recv_queue);
 157                } else if (pattrib->pkt_rpt_type == TX_REPORT2) {
 158                        ODM_RA_TxRPT2Handle_8188E(&haldata->odmpriv,
 159                                                  precvframe->pkt->data,
 160                                                  pattrib->pkt_len,
 161                                                  pattrib->MacIDValidEntry[0],
 162                                                  pattrib->MacIDValidEntry[1]);
 163                        rtw_free_recvframe(precvframe, pfree_recv_queue);
 164                } else if (pattrib->pkt_rpt_type == HIS_REPORT) {
 165                        interrupt_handler_8188eu(adapt, pattrib->pkt_len, precvframe->pkt->data);
 166                        rtw_free_recvframe(precvframe, pfree_recv_queue);
 167                }
 168                pkt_cnt--;
 169                transfer_len -= pkt_offset;
 170                pbuf += pkt_offset;
 171                precvframe = NULL;
 172                pkt_copy = NULL;
 173
 174                if (transfer_len > 0 && pkt_cnt == 0)
 175                        pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
 176
 177        } while ((transfer_len > 0) && (pkt_cnt > 0));
 178
 179_exit_recvbuf2recvframe:
 180
 181        return _SUCCESS;
 182}
 183
 184unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
 185{
 186        unsigned int pipe = 0, ep_num = 0;
 187        struct usb_device *pusbd = pdvobj->pusbdev;
 188
 189        if (addr == RECV_BULK_IN_ADDR) {
 190                pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[0]);
 191        } else if (addr == RECV_INT_IN_ADDR) {
 192                pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[1]);
 193        } else if (addr < HW_QUEUE_ENTRY) {
 194                ep_num = pdvobj->Queue2Pipe[addr];
 195                pipe = usb_sndbulkpipe(pusbd, ep_num);
 196        }
 197
 198        return pipe;
 199}
 200
 201static int usbctrl_vendorreq(struct adapter *adapt, u8 request, u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
 202{
 203        struct dvobj_priv *dvobjpriv = adapter_to_dvobj(adapt);
 204        struct usb_device *udev = dvobjpriv->pusbdev;
 205        unsigned int pipe;
 206        int status = 0;
 207        u8 reqtype;
 208        u8 *pIo_buf;
 209        int vendorreq_times = 0;
 210
 211        if ((adapt->bSurpriseRemoved) || (adapt->pwrctrlpriv.pnp_bstop_trx)) {
 212                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 213                         ("%s:(adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 214                          __func__));
 215                status = -EPERM;
 216                goto exit;
 217        }
 218
 219        if (len > MAX_VENDOR_REQ_CMD_SIZE) {
 220                DBG_88E("[%s] Buffer len error ,vendor request failed\n", __func__);
 221                status = -EINVAL;
 222                goto exit;
 223        }
 224
 225        if (mutex_lock_interruptible(&dvobjpriv->usb_vendor_req_mutex)) {
 226                status = -ERESTARTSYS;
 227                goto exit;
 228        }
 229
 230        /*  Acquire IO memory for vendorreq */
 231        pIo_buf = kmalloc(MAX_USB_IO_CTL_SIZE, GFP_ATOMIC);
 232
 233        if (!pIo_buf) {
 234                status = -ENOMEM;
 235                goto release_mutex;
 236        }
 237
 238        while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
 239                memset(pIo_buf, 0, len);
 240
 241                if (requesttype == 0x01) {
 242                        pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
 243                        reqtype =  REALTEK_USB_VENQT_READ;
 244                } else {
 245                        pipe = usb_sndctrlpipe(udev, 0);/* write_out */
 246                        reqtype =  REALTEK_USB_VENQT_WRITE;
 247                        memcpy(pIo_buf, pdata, len);
 248                }
 249
 250                status = usb_control_msg(udev, pipe, request, reqtype, value, index, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
 251
 252                if (status == len) {   /*  Success this control transfer. */
 253                        if (requesttype == 0x01)
 254                                memcpy(pdata, pIo_buf,  len);
 255                } else { /*  error cases */
 256                        DBG_88E("reg 0x%x, usb %s %u fail, status:%d value=0x%x, vendorreq_times:%d\n",
 257                                value, (requesttype == 0x01) ? "read" : "write",
 258                                len, status, *(u32 *)pdata, vendorreq_times);
 259
 260                        if (status < 0) {
 261                                if (status == (-ESHUTDOWN) || status == -ENODEV)
 262                                        adapt->bSurpriseRemoved = true;
 263                                else
 264                                        adapt->HalData->srestpriv.wifi_error_status = USB_VEN_REQ_CMD_FAIL;
 265                        } else { /*  status != len && status >= 0 */
 266                                if (status > 0) {
 267                                        if (requesttype == 0x01) {
 268                                                /*  For Control read transfer, we have to copy the read data from pIo_buf to pdata. */
 269                                                memcpy(pdata, pIo_buf,  len);
 270                                        }
 271                                }
 272                        }
 273                }
 274
 275                /*  firmware download is checksummed, don't retry */
 276                if ((value >= FW_8188E_START_ADDRESS && value <= FW_8188E_END_ADDRESS) || status == len)
 277                        break;
 278        }
 279        kfree(pIo_buf);
 280
 281release_mutex:
 282        mutex_unlock(&dvobjpriv->usb_vendor_req_mutex);
 283exit:
 284        return status;
 285}
 286
 287u8 usb_read8(struct adapter *adapter, u32 addr)
 288{
 289        u8 request;
 290        u8 requesttype;
 291        u16 wvalue;
 292        u16 index;
 293        u16 len;
 294        u8 data = 0;
 295
 296        request = 0x05;
 297        requesttype = 0x01;/* read_in */
 298        index = 0;/* n/a */
 299
 300        wvalue = (u16)(addr & 0x0000ffff);
 301        len = 1;
 302
 303        usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 304
 305        return data;
 306}
 307
 308u16 usb_read16(struct adapter *adapter, u32 addr)
 309{
 310        u8 request;
 311        u8 requesttype;
 312        u16 wvalue;
 313        u16 index;
 314        u16 len;
 315        __le32 data;
 316
 317        request = 0x05;
 318        requesttype = 0x01;/* read_in */
 319        index = 0;/* n/a */
 320        wvalue = (u16)(addr & 0x0000ffff);
 321        len = 2;
 322        usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 323
 324        return (u16)(le32_to_cpu(data) & 0xffff);
 325}
 326
 327u32 usb_read32(struct adapter *adapter, u32 addr)
 328{
 329        u8 request;
 330        u8 requesttype;
 331        u16 wvalue;
 332        u16 index;
 333        u16 len;
 334        __le32 data;
 335
 336        request = 0x05;
 337        requesttype = 0x01;/* read_in */
 338        index = 0;/* n/a */
 339
 340        wvalue = (u16)(addr & 0x0000ffff);
 341        len = 4;
 342
 343        usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 344
 345        return le32_to_cpu(data);
 346}
 347
 348static void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
 349{
 350        struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
 351        struct adapter *adapt = (struct adapter *)precvbuf->adapter;
 352        struct recv_priv *precvpriv = &adapt->recvpriv;
 353
 354        RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("%s!!!\n", __func__));
 355
 356        if (adapt->bSurpriseRemoved || adapt->bDriverStopped || adapt->bReadPortCancel) {
 357                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 358                         ("%s:bDriverStopped(%d) OR bSurpriseRemoved(%d)\n",
 359                         __func__, adapt->bDriverStopped,
 360                         adapt->bSurpriseRemoved));
 361
 362                precvbuf->reuse = true;
 363                DBG_88E("%s() RX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bReadPortCancel(%d)\n",
 364                        __func__, adapt->bDriverStopped,
 365                        adapt->bSurpriseRemoved, adapt->bReadPortCancel);
 366                return;
 367        }
 368
 369        if (purb->status == 0) { /* SUCCESS */
 370                if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)) {
 371                        RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 372                                 ("%s: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n",
 373                                 __func__));
 374                        precvbuf->reuse = true;
 375                        usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 376                        DBG_88E("%s()-%d: RX Warning!\n", __func__, __LINE__);
 377                } else {
 378                        skb_put(precvbuf->pskb, purb->actual_length);
 379                        skb_queue_tail(&precvpriv->rx_skb_queue, precvbuf->pskb);
 380
 381                        if (skb_queue_len(&precvpriv->rx_skb_queue) <= 1)
 382                                tasklet_schedule(&precvpriv->recv_tasklet);
 383
 384                        precvbuf->pskb = NULL;
 385                        precvbuf->reuse = false;
 386                        usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 387                }
 388        } else {
 389                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 390                         ("%s : purb->status(%d) != 0\n",
 391                          __func__, purb->status));
 392
 393                DBG_88E("###=> %s => urb status(%d)\n", __func__, purb->status);
 394                skb_put(precvbuf->pskb, purb->actual_length);
 395                precvbuf->pskb = NULL;
 396
 397                switch (purb->status) {
 398                case -EINVAL:
 399                case -EPIPE:
 400                case -ENODEV:
 401                case -ESHUTDOWN:
 402                        adapt->bSurpriseRemoved = true;
 403                        fallthrough;
 404                case -ENOENT:
 405                        adapt->bDriverStopped = true;
 406                        RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 407                                 ("%s:bDriverStopped=true\n", __func__));
 408                        break;
 409                case -EPROTO:
 410                case -EOVERFLOW:
 411                        adapt->HalData->srestpriv.wifi_error_status = USB_READ_PORT_FAIL;
 412                        precvbuf->reuse = true;
 413                        usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 414                        break;
 415                case -EINPROGRESS:
 416                        DBG_88E("ERROR: URB IS IN PROGRESS!\n");
 417                        break;
 418                default:
 419                        break;
 420                }
 421        }
 422}
 423
 424u32 usb_read_port(struct adapter *adapter, u32 addr, struct recv_buf *precvbuf)
 425{
 426        struct urb *purb = NULL;
 427        struct dvobj_priv *pdvobj = adapter_to_dvobj(adapter);
 428        struct recv_priv *precvpriv = &adapter->recvpriv;
 429        struct usb_device *pusbd = pdvobj->pusbdev;
 430        int err;
 431        unsigned int pipe;
 432        u32 ret = _SUCCESS;
 433
 434        if (adapter->bDriverStopped || adapter->bSurpriseRemoved ||
 435            adapter->pwrctrlpriv.pnp_bstop_trx) {
 436                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 437                         ("%s:(adapt->bDriverStopped ||adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 438                          __func__));
 439                return _FAIL;
 440        }
 441
 442        if (!precvbuf) {
 443                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 444                         ("%s:precvbuf==NULL\n", __func__));
 445                return _FAIL;
 446        }
 447
 448        if (!precvbuf->reuse || !precvbuf->pskb) {
 449                precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue);
 450                if (precvbuf->pskb)
 451                        precvbuf->reuse = true;
 452        }
 453
 454        /* re-assign for linux based on skb */
 455        if (!precvbuf->reuse || !precvbuf->pskb) {
 456                precvbuf->pskb = netdev_alloc_skb(adapter->pnetdev, MAX_RECVBUF_SZ);
 457                if (!precvbuf->pskb) {
 458                        RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("init_recvbuf(): alloc_skb fail!\n"));
 459                        DBG_88E("#### %s() alloc_skb fail!#####\n", __func__);
 460                        return _FAIL;
 461                }
 462        } else { /* reuse skb */
 463                precvbuf->reuse = false;
 464        }
 465
 466        purb = precvbuf->purb;
 467
 468        /* translate DMA FIFO addr to pipehandle */
 469        pipe = ffaddr2pipehdl(pdvobj, addr);
 470
 471        usb_fill_bulk_urb(purb, pusbd, pipe,
 472                          precvbuf->pskb->data,
 473                          MAX_RECVBUF_SZ,
 474                          usb_read_port_complete,
 475                          precvbuf);/* context is precvbuf */
 476
 477        err = usb_submit_urb(purb, GFP_ATOMIC);
 478        if ((err) && (err != (-EPERM))) {
 479                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 480                         ("cannot submit rx in-token(err=0x%.8x), URB_STATUS =0x%.8x",
 481                         err, purb->status));
 482                DBG_88E("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n",
 483                        err, purb->status);
 484                ret = _FAIL;
 485        }
 486
 487        return ret;
 488}
 489
 490void rtw_hal_inirp_deinit(struct adapter *padapter)
 491{
 492        int i;
 493        struct recv_buf *precvbuf;
 494
 495        precvbuf = padapter->recvpriv.precv_buf;
 496
 497        DBG_88E("%s\n", __func__);
 498
 499        padapter->bReadPortCancel = true;
 500
 501        for (i = 0; i < NR_RECVBUFF; i++) {
 502                precvbuf->reuse = true;
 503                if (precvbuf->purb)
 504                        usb_kill_urb(precvbuf->purb);
 505                precvbuf++;
 506        }
 507}
 508
 509int usb_write8(struct adapter *adapter, u32 addr, u8 val)
 510{
 511        u8 request;
 512        u8 requesttype;
 513        u16 wvalue;
 514        u16 index;
 515        u16 len;
 516        u8 data;
 517
 518        request = 0x05;
 519        requesttype = 0x00;/* write_out */
 520        index = 0;/* n/a */
 521        wvalue = (u16)(addr & 0x0000ffff);
 522        len = 1;
 523        data = val;
 524        return usbctrl_vendorreq(adapter, request, wvalue,
 525                                 index, &data, len, requesttype);
 526}
 527
 528int usb_write16(struct adapter *adapter, u32 addr, u16 val)
 529{
 530        u8 request;
 531        u8 requesttype;
 532        u16 wvalue;
 533        u16 index;
 534        u16 len;
 535        __le32 data;
 536
 537        request = 0x05;
 538        requesttype = 0x00;/* write_out */
 539        index = 0;/* n/a */
 540
 541        wvalue = (u16)(addr & 0x0000ffff);
 542        len = 2;
 543
 544        data = cpu_to_le32(val & 0x0000ffff);
 545
 546        return usbctrl_vendorreq(adapter, request, wvalue,
 547                                 index, &data, len, requesttype);
 548}
 549
 550int usb_write32(struct adapter *adapter, u32 addr, u32 val)
 551{
 552        u8 request;
 553        u8 requesttype;
 554        u16 wvalue;
 555        u16 index;
 556        u16 len;
 557        __le32 data;
 558
 559        request = 0x05;
 560        requesttype = 0x00;/* write_out */
 561        index = 0;/* n/a */
 562
 563        wvalue = (u16)(addr & 0x0000ffff);
 564        len = 4;
 565        data = cpu_to_le32(val);
 566
 567        return usbctrl_vendorreq(adapter, request, wvalue,
 568                                 index, &data, len, requesttype);
 569}
 570
 571static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
 572{
 573        struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
 574        struct adapter *padapter = pxmitbuf->padapter;
 575        struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 576
 577        switch (pxmitbuf->flags) {
 578        case VO_QUEUE_INX:
 579                pxmitpriv->voq_cnt--;
 580                break;
 581        case VI_QUEUE_INX:
 582                pxmitpriv->viq_cnt--;
 583                break;
 584        case BE_QUEUE_INX:
 585                pxmitpriv->beq_cnt--;
 586                break;
 587        case BK_QUEUE_INX:
 588                pxmitpriv->bkq_cnt--;
 589                break;
 590        case HIGH_QUEUE_INX:
 591#ifdef CONFIG_88EU_AP_MODE
 592                rtw_chk_hi_queue_cmd(padapter);
 593#endif
 594                break;
 595        default:
 596                break;
 597        }
 598
 599        if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
 600            padapter->bWritePortCancel) {
 601                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 602                         ("%s:bDriverStopped(%d) OR bSurpriseRemoved(%d)",
 603                          __func__, padapter->bDriverStopped,
 604                          padapter->bSurpriseRemoved));
 605                DBG_88E("%s(): TX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bWritePortCancel(%d) pxmitbuf->ext_tag(%x)\n",
 606                        __func__, padapter->bDriverStopped,
 607                        padapter->bSurpriseRemoved, padapter->bReadPortCancel,
 608                        pxmitbuf->ext_tag);
 609
 610                goto check_completion;
 611        }
 612
 613        if (purb->status) {
 614                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 615                         ("%s : purb->status(%d) != 0\n",
 616                          __func__, purb->status));
 617                DBG_88E("###=> %s status(%d)\n", __func__, purb->status);
 618                if ((purb->status == -EPIPE) || (purb->status == -EPROTO)) {
 619                        sreset_set_wifi_error_status(padapter, USB_WRITE_PORT_FAIL);
 620                } else if (purb->status == -EINPROGRESS) {
 621                        RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 622                                 ("%s: EINPROGRESS\n", __func__));
 623                        goto check_completion;
 624                } else if (purb->status == -ENOENT) {
 625                        DBG_88E("%s: -ENOENT\n", __func__);
 626                        goto check_completion;
 627                } else if (purb->status == -ECONNRESET) {
 628                        DBG_88E("%s: -ECONNRESET\n", __func__);
 629                        goto check_completion;
 630                } else if (purb->status == -ESHUTDOWN) {
 631                        RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 632                                 ("%s: ESHUTDOWN\n", __func__));
 633                        padapter->bDriverStopped = true;
 634                        RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 635                                 ("%s:bDriverStopped = true\n", __func__));
 636                        goto check_completion;
 637                } else {
 638                        padapter->bSurpriseRemoved = true;
 639                        DBG_88E("bSurpriseRemoved = true\n");
 640                        RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 641                                 ("%s:bSurpriseRemoved = true\n", __func__));
 642                        goto check_completion;
 643                }
 644        }
 645
 646check_completion:
 647        rtw_sctx_done_err(&pxmitbuf->sctx,
 648                          purb->status ? RTW_SCTX_DONE_WRITE_PORT_ERR :
 649                          RTW_SCTX_DONE_SUCCESS);
 650
 651        rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
 652
 653        tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
 654}
 655
 656u32 usb_write_port(struct adapter *padapter, u32 addr, u32 cnt, struct xmit_buf *xmitbuf)
 657{
 658        unsigned long irqL;
 659        unsigned int pipe;
 660        int status;
 661        u32 ret = _FAIL;
 662        struct urb *purb = NULL;
 663        struct dvobj_priv *pdvobj = adapter_to_dvobj(padapter);
 664        struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 665        struct xmit_frame *pxmitframe = (struct xmit_frame *)xmitbuf->priv_data;
 666        struct usb_device *pusbd = pdvobj->pusbdev;
 667
 668        RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("+%s\n", __func__));
 669
 670        if ((padapter->bDriverStopped) || (padapter->bSurpriseRemoved) ||
 671            (padapter->pwrctrlpriv.pnp_bstop_trx)) {
 672                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 673                         ("%s:( padapter->bDriverStopped ||padapter->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 674                          __func__));
 675                rtw_sctx_done_err(&xmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
 676                goto exit;
 677        }
 678
 679        spin_lock_irqsave(&pxmitpriv->lock, irqL);
 680
 681        switch (addr) {
 682        case VO_QUEUE_INX:
 683                pxmitpriv->voq_cnt++;
 684                xmitbuf->flags = VO_QUEUE_INX;
 685                break;
 686        case VI_QUEUE_INX:
 687                pxmitpriv->viq_cnt++;
 688                xmitbuf->flags = VI_QUEUE_INX;
 689                break;
 690        case BE_QUEUE_INX:
 691                pxmitpriv->beq_cnt++;
 692                xmitbuf->flags = BE_QUEUE_INX;
 693                break;
 694        case BK_QUEUE_INX:
 695                pxmitpriv->bkq_cnt++;
 696                xmitbuf->flags = BK_QUEUE_INX;
 697                break;
 698        case HIGH_QUEUE_INX:
 699                xmitbuf->flags = HIGH_QUEUE_INX;
 700                break;
 701        default:
 702                xmitbuf->flags = MGT_QUEUE_INX;
 703                break;
 704        }
 705
 706        spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
 707
 708        purb    = xmitbuf->pxmit_urb[0];
 709
 710        /* translate DMA FIFO addr to pipehandle */
 711        pipe = ffaddr2pipehdl(pdvobj, addr);
 712
 713        usb_fill_bulk_urb(purb, pusbd, pipe,
 714                          pxmitframe->buf_addr, /*  xmitbuf->pbuf */
 715                          cnt,
 716                          usb_write_port_complete,
 717                          xmitbuf);/* context is xmitbuf */
 718
 719        status = usb_submit_urb(purb, GFP_ATOMIC);
 720        if (status) {
 721                rtw_sctx_done_err(&xmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
 722                DBG_88E("%s, status =%d\n", __func__, status);
 723                RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 724                         ("%s(): usb_submit_urb, status =%x\n",
 725                          __func__, status));
 726
 727                switch (status) {
 728                case -ENODEV:
 729                        padapter->bDriverStopped = true;
 730                        break;
 731                default:
 732                        break;
 733                }
 734                goto exit;
 735        }
 736
 737        ret = _SUCCESS;
 738
 739/*    We add the URB_ZERO_PACKET flag to urb so that the host will send the zero packet automatically. */
 740
 741        RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("-%s\n", __func__));
 742
 743exit:
 744        if (ret != _SUCCESS)
 745                rtw_free_xmitbuf(pxmitpriv, xmitbuf);
 746        return ret;
 747}
 748
 749void usb_write_port_cancel(struct adapter *padapter)
 750{
 751        int i, j;
 752        struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
 753
 754        DBG_88E("%s\n", __func__);
 755
 756        padapter->bWritePortCancel = true;
 757
 758        for (i = 0; i < NR_XMITBUFF; i++) {
 759                for (j = 0; j < 8; j++) {
 760                        if (pxmitbuf->pxmit_urb[j])
 761                                usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 762                }
 763                pxmitbuf++;
 764        }
 765
 766        pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmit_extbuf;
 767        for (i = 0; i < NR_XMIT_EXTBUFF; i++) {
 768                for (j = 0; j < 8; j++) {
 769                        if (pxmitbuf->pxmit_urb[j])
 770                                usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 771                }
 772                pxmitbuf++;
 773        }
 774}
 775
 776void rtl8188eu_recv_tasklet(struct tasklet_struct *t)
 777{
 778        struct sk_buff *pskb;
 779        struct adapter *adapt = from_tasklet(adapt, t, recvpriv.recv_tasklet);
 780        struct recv_priv *precvpriv = &adapt->recvpriv;
 781
 782        while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
 783                if ((adapt->bDriverStopped) || (adapt->bSurpriseRemoved)) {
 784                        DBG_88E("recv_tasklet => bDriverStopped or bSurpriseRemoved\n");
 785                        dev_kfree_skb_any(pskb);
 786                        break;
 787                }
 788                recvbuf2recvframe(adapt, pskb);
 789                skb_reset_tail_pointer(pskb);
 790                pskb->len = 0;
 791                skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
 792        }
 793}
 794
 795void rtl8188eu_xmit_tasklet(struct tasklet_struct *t)
 796{
 797        struct adapter *adapt = from_tasklet(adapt, t, xmitpriv.xmit_tasklet);
 798        struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
 799
 800        if (check_fwstate(&adapt->mlmepriv, _FW_UNDER_SURVEY))
 801                return;
 802
 803        while (1) {
 804                if ((adapt->bDriverStopped) ||
 805                    (adapt->bSurpriseRemoved) ||
 806                    (adapt->bWritePortCancel)) {
 807                        DBG_88E("xmit_tasklet => bDriverStopped or bSurpriseRemoved or bWritePortCancel\n");
 808                        break;
 809                }
 810
 811                if (!rtl8188eu_xmitframe_complete(adapt, pxmitpriv))
 812                        break;
 813        }
 814}
 815