drivers/net/wireless/rtlwifi/usb.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  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  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  *****************************************************************************/
  27
  28 #include "wifi.h"
  29 #include "core.h"
  30 #include "usb.h"
  31 #include "base.h"
  32 #include "ps.h"
  33 #include "rtl8192c/fw_common.h"
  34 #include <linux/export.h>
  35
  36 #define REALTEK_USB_VENQT_READ                  0xC0
  37 #define REALTEK_USB_VENQT_WRITE                 0x40
  38 #define REALTEK_USB_VENQT_CMD_REQ               0x05
  39 #define REALTEK_USB_VENQT_CMD_IDX               0x00
  40
  41 #define MAX_USBCTRL_VENDORREQ_TIMES             10
  42
  43 static void usbctrl_async_callback(struct urb *urb)
  44 {
  45         if (urb) {
  46                 /* free dr */
  47                 kfree(urb->setup_packet);
  48                 /* free databuf */
  49                 kfree(urb->transfer_buffer);
  50         }
  51 }
  52
  53 static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
  54                                           u16 value, u16 index, void *pdata,
  55                                           u16 len)
  56 {
  57         int rc;
  58         unsigned int pipe;
  59         u8 reqtype;
  60         struct usb_ctrlrequest *dr;
  61         struct urb *urb;
  62         const u16 databuf_maxlen = REALTEK_USB_VENQT_MAX_BUF_SIZE;
  63         u8 *databuf;
  64
  65         if (WARN_ON_ONCE(len > databuf_maxlen))
  66                 len = databuf_maxlen;
  67
  68         pipe = usb_sndctrlpipe(udev, 0); /* write_out */
  69         reqtype =  REALTEK_USB_VENQT_WRITE;
  70
  71         dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
  72         if (!dr)
  73                 return -ENOMEM;
  74
  75         databuf = kmalloc(databuf_maxlen, GFP_ATOMIC);
  76         if (!databuf) {
  77                 kfree(dr);
  78                 return -ENOMEM;
  79         }
  80
  81         urb = usb_alloc_urb(0, GFP_ATOMIC);
  82         if (!urb) {
  83                 kfree(databuf);
  84                 kfree(dr);
  85                 return -ENOMEM;
  86         }
  87
  88         dr->bRequestType = reqtype;
  89         dr->bRequest = request;
  90         dr->wValue = cpu_to_le16(value);
  91         dr->wIndex = cpu_to_le16(index);
  92         dr->wLength = cpu_to_le16(len);
  93         /* data are already in little-endian order */
  94         memcpy(databuf, pdata, len);
  95         usb_fill_control_urb(urb, udev, pipe,
  96                              (unsigned char *)dr, databuf, len,
  97                              usbctrl_async_callback, NULL);
  98         rc = usb_submit_urb(urb, GFP_ATOMIC);
  99         if (rc < 0) {
 100                 kfree(databuf);
 101                 kfree(dr);
 102         }
 103         usb_free_urb(urb);
 104         return rc;
 105 }
 106
 107 static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
 108                                         u16 value, u16 index, void *pdata,
 109                                         u16 len)
 110 {
 111         unsigned int pipe;
 112         int status;
 113         u8 reqtype;
 114         int vendorreq_times = 0;
 115         static int count;
 116
 117         pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
 118         reqtype =  REALTEK_USB_VENQT_READ;
 119
 120         do {
 121                 status = usb_control_msg(udev, pipe, request, reqtype, value,
 122                                          index, pdata, len, 0); /*max. timeout*/
 123                 if (status < 0) {
 124                         /* firmware download is checksumed, don't retry */
 125                         if ((value >= FW_8192C_START_ADDRESS &&
 126                             value <= FW_8192C_END_ADDRESS))
 127                                 break;
 128                 } else {
 129                         break;
 130                 }
 131         } while (++vendorreq_times < MAX_USBCTRL_VENDORREQ_TIMES);
 132
 133         if (status < 0 && count++ < 4)
 134                 pr_err("reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x\n",
 135                        value, status, *(u32 *)pdata);
 136         return status;
 137 }
 138
 139 static u32 _usb_read_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len)
 140 {
 141         struct device *dev = rtlpriv->io.dev;
 142         struct usb_device *udev = to_usb_device(dev);
 143         u8 request;
 144         u16 wvalue;
 145         u16 index;
 146         __le32 *data;
 147         unsigned long flags;
 148
 149         spin_lock_irqsave(&rtlpriv->locks.usb_lock, flags);
 150         if (++rtlpriv->usb_data_index >= RTL_USB_MAX_RX_COUNT)
 151                 rtlpriv->usb_data_index = 0;
 152         data = &rtlpriv->usb_data[rtlpriv->usb_data_index];
 153         spin_unlock_irqrestore(&rtlpriv->locks.usb_lock, flags);
 154         request = REALTEK_USB_VENQT_CMD_REQ;
 155         index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
 156
 157         wvalue = (u16)addr;
 158         _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
 159         return le32_to_cpu(*data);
 160 }
 161
 162 static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
 163 {
 164         return (u8)_usb_read_sync(rtlpriv, addr, 1);
 165 }
 166
 167 static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
 168 {
 169         return (u16)_usb_read_sync(rtlpriv, addr, 2);
 170 }
 171
 172 static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
 173 {
 174         return _usb_read_sync(rtlpriv, addr, 4);
 175 }
 176
 177 static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
 178                              u16 len)
 179 {
 180         u8 request;
 181         u16 wvalue;
 182         u16 index;
 183         __le32 data;
 184
 185         request = REALTEK_USB_VENQT_CMD_REQ;
 186         index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
 187         wvalue = (u16)(addr&0x0000ffff);
 188         data = cpu_to_le32(val);
 189         _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
 190                                        len);
 191 }
 192
 193 static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
 194 {
 195         struct device *dev = rtlpriv->io.dev;
 196
 197         _usb_write_async(to_usb_device(dev), addr, val, 1);
 198 }
 199
 200 static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
 201 {
 202         struct device *dev = rtlpriv->io.dev;
 203
 204         _usb_write_async(to_usb_device(dev), addr, val, 2);
 205 }
 206
 207 static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
 208 {
 209         struct device *dev = rtlpriv->io.dev;
 210
 211         _usb_write_async(to_usb_device(dev), addr, val, 4);
 212 }
 213
 214 static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
 215                              u16 len)
 216 {
 217         struct device *dev = rtlpriv->io.dev;
 218         struct usb_device *udev = to_usb_device(dev);
 219         u8 request = REALTEK_USB_VENQT_CMD_REQ;
 220         u8 reqtype =  REALTEK_USB_VENQT_WRITE;
 221         u16 wvalue;
 222         u16 index = REALTEK_USB_VENQT_CMD_IDX;
 223         int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
 224         u8 *buffer;
 225
 226         wvalue = (u16)(addr & 0x0000ffff);
 227         buffer = kmemdup(data, len, GFP_ATOMIC);
 228         if (!buffer)
 229                 return;
 230         usb_control_msg(udev, pipe, request, reqtype, wvalue,
 231                         index, buffer, len, 50);
 232
 233         kfree(buffer);
 234 }
 235
 236 static void _rtl_usb_io_handler_init(struct device *dev,
 237                                      struct ieee80211_hw *hw)
 238 {
 239         struct rtl_priv *rtlpriv = rtl_priv(hw);
 240
 241         rtlpriv->io.dev = dev;
 242         mutex_init(&rtlpriv->io.bb_mutex);
 243         rtlpriv->io.write8_async        = _usb_write8_async;
 244         rtlpriv->io.write16_async       = _usb_write16_async;
 245         rtlpriv->io.write32_async       = _usb_write32_async;
 246         rtlpriv->io.read8_sync          = _usb_read8_sync;
 247         rtlpriv->io.read16_sync         = _usb_read16_sync;
 248         rtlpriv->io.read32_sync         = _usb_read32_sync;
 249         rtlpriv->io.writeN_sync         = _usb_writeN_sync;
 250 }
 251
 252 static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
 253 {
 254         struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
 255
 256         mutex_destroy(&rtlpriv->io.bb_mutex);
 257 }
 258
 259 /**
 260  *
 261  *      Default aggregation handler. Do nothing and just return the oldest skb.
 262  */
 263 static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
 264                                                   struct sk_buff_head *list)
 265 {
 266         return skb_dequeue(list);
 267 }
 268
 269 #define IS_HIGH_SPEED_USB(udev) \
 270                 ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
 271
 272 static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
 273 {
 274         u32 i;
 275         struct rtl_priv *rtlpriv = rtl_priv(hw);
 276         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 277
 278         rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
 279                                                     ? USB_HIGH_SPEED_BULK_SIZE
 280                                                     : USB_FULL_SPEED_BULK_SIZE;
 281
 282         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "USB Max Bulk-out Size=%d\n",
 283                  rtlusb->max_bulk_out_size);
 284
 285         for (i = 0; i < __RTL_TXQ_NUM; i++) {
 286                 u32 ep_num = rtlusb->ep_map.ep_mapping[i];
 287                 if (!ep_num) {
 288                         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 289                                  "Invalid endpoint map setting!\n");
 290                         return -EINVAL;
 291                 }
 292         }
 293
 294         rtlusb->usb_tx_post_hdl =
 295                  rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
 296         rtlusb->usb_tx_cleanup  =
 297                  rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
 298         rtlusb->usb_tx_aggregate_hdl =
 299                  (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
 300                  ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
 301                  : &_none_usb_tx_aggregate_hdl;
 302
 303         init_usb_anchor(&rtlusb->tx_submitted);
 304         for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
 305                 skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
 306                 init_usb_anchor(&rtlusb->tx_pending[i]);
 307         }
 308         return 0;
 309 }
 310
 311 static void _rtl_rx_work(unsigned long param);
 312
 313 static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
 314 {
 315         struct rtl_priv *rtlpriv = rtl_priv(hw);
 316         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
 317         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
 318
 319         rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
 320         rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
 321         rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
 322         rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
 323         rtlusb->usb_rx_segregate_hdl =
 324                 rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
 325
 326         pr_info("rx_max_size %d, rx_urb_num %d, in_ep %d\n",
 327                 rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
 328         init_usb_anchor(&rtlusb->rx_submitted);
 329         init_usb_anchor(&rtlusb->rx_cleanup_urbs);
 330
 331         skb_queue_head_init(&rtlusb->rx_queue);
 332         rtlusb->rx_work_tasklet.func = _rtl_rx_work;
 333         rtlusb->rx_work_tasklet.data = (unsigned long)rtlusb;
 334
 335         return 0;
 336 }
 337
 338 static int _rtl_usb_init(struct ieee80211_hw *hw)
 339 {
 340         struct rtl_priv *rtlpriv = rtl_priv(hw);
 341         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
 342         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
 343         int err;
 344         u8 epidx;
 345         struct usb_interface    *usb_intf = rtlusb->intf;
 346         u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
 347
 348         rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
 349         for (epidx = 0; epidx < epnums; epidx++) {
 350                 struct usb_endpoint_descriptor *pep_desc;
 351                 pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
 352
 353                 if (usb_endpoint_dir_in(pep_desc))
 354                         rtlusb->in_ep_nums++;
 355                 else if (usb_endpoint_dir_out(pep_desc))
 356                         rtlusb->out_ep_nums++;
 357
 358                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 359                          "USB EP(0x%02x), MaxPacketSize=%d, Interval=%d\n",
 360                          pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
 361                          pep_desc->bInterval);
 362         }
 363         if (rtlusb->in_ep_nums <  rtlpriv->cfg->usb_interface_cfg->in_ep_num) {
 364                 pr_err("Too few input end points found\n");
 365                 return -EINVAL;
 366         }
 367         if (rtlusb->out_ep_nums == 0) {
 368                 pr_err("No output end points found\n");
 369                 return -EINVAL;
 370         }
 371         /* usb endpoint mapping */
 372         err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
 373         rtlusb->usb_mq_to_hwq =  rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
 374         _rtl_usb_init_tx(hw);
 375         _rtl_usb_init_rx(hw);
 376         return err;
 377 }
 378
 379 static void rtl_usb_init_sw(struct ieee80211_hw *hw)
 380 {
 381         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 382         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 383         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 384         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 385
 386         rtlhal->hw = hw;
 387         ppsc->inactiveps = false;
 388         ppsc->leisure_ps = false;
 389         ppsc->fwctrl_lps = false;
 390         ppsc->reg_fwctrl_lps = 3;
 391         ppsc->reg_max_lps_awakeintvl = 5;
 392         ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
 393
 394          /* IBSS */
 395         mac->beacon_interval = 100;
 396
 397          /* AMPDU */
 398         mac->min_space_cfg = 0;
 399         mac->max_mss_density = 0;
 400
 401         /* set sane AMPDU defaults */
 402         mac->current_ampdu_density = 7;
 403         mac->current_ampdu_factor = 3;
 404
 405         /* QOS */
 406         rtlusb->acm_method = eAcmWay2_SW;
 407
 408         /* IRQ */
 409         /* HIMR - turn all on */
 410         rtlusb->irq_mask[0] = 0xFFFFFFFF;
 411         /* HIMR_EX - turn all on */
 412         rtlusb->irq_mask[1] = 0xFFFFFFFF;
 413         rtlusb->disableHWSM =  true;
 414 }
 415
 416 static void _rtl_rx_completed(struct urb *urb);
 417
 418 static int _rtl_prep_rx_urb(struct ieee80211_hw *hw, struct rtl_usb *rtlusb,
 419                               struct urb *urb, gfp_t gfp_mask)
 420 {
 421         struct rtl_priv *rtlpriv = rtl_priv(hw);
 422         void *buf;
 423
 424         buf = usb_alloc_coherent(rtlusb->udev, rtlusb->rx_max_size, gfp_mask,
 425                                  &urb->transfer_dma);
 426         if (!buf) {
 427                 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 428                          "Failed to usb_alloc_coherent!!\n");
 429                 return -ENOMEM;
 430         }
 431
 432         usb_fill_bulk_urb(urb, rtlusb->udev,
 433                           usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
 434                           buf, rtlusb->rx_max_size, _rtl_rx_completed, rtlusb);
 435         urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 436
 437         return 0;
 438 }
 439
 440 static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
 441                                     struct sk_buff *skb)
 442 {
 443         struct rtl_priv *rtlpriv = rtl_priv(hw);
 444         u8 *rxdesc = skb->data;
 445         struct ieee80211_hdr *hdr;
 446         bool unicast = false;
 447         __le16 fc;
 448         struct ieee80211_rx_status rx_status = {0};
 449         struct rtl_stats stats = {
 450                 .signal = 0,
 451                 .noise = -98,
 452                 .rate = 0,
 453         };
 454
 455         skb_pull(skb, RTL_RX_DESC_SIZE);
 456         rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
 457         skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
 458         hdr = (struct ieee80211_hdr *)(skb->data);
 459         fc = hdr->frame_control;
 460         if (!stats.crc) {
 461                 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 462
 463                 if (is_broadcast_ether_addr(hdr->addr1)) {
 464                         /*TODO*/;
 465                 } else if (is_multicast_ether_addr(hdr->addr1)) {
 466                         /*TODO*/
 467                 } else {
 468                         unicast = true;
 469                         rtlpriv->stats.rxbytesunicast +=  skb->len;
 470                 }
 471
 472                 rtl_is_special_data(hw, skb, false);
 473
 474                 if (ieee80211_is_data(fc)) {
 475                         rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
 476
 477                         if (unicast)
 478                                 rtlpriv->link_info.num_rx_inperiod++;
 479                 }
 480         }
 481 }
 482
 483 static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
 484                                       struct sk_buff *skb)
 485 {
 486         struct rtl_priv *rtlpriv = rtl_priv(hw);
 487         u8 *rxdesc = skb->data;
 488         struct ieee80211_hdr *hdr;
 489         bool unicast = false;
 490         __le16 fc;
 491         struct ieee80211_rx_status rx_status = {0};
 492         struct rtl_stats stats = {
 493                 .signal = 0,
 494                 .noise = -98,
 495                 .rate = 0,
 496         };
 497
 498         skb_pull(skb, RTL_RX_DESC_SIZE);
 499         rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
 500         skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
 501         hdr = (struct ieee80211_hdr *)(skb->data);
 502         fc = hdr->frame_control;
 503         if (!stats.crc) {
 504                 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 505
 506                 if (is_broadcast_ether_addr(hdr->addr1)) {
 507                         /*TODO*/;
 508                 } else if (is_multicast_ether_addr(hdr->addr1)) {
 509                         /*TODO*/
 510                 } else {
 511                         unicast = true;
 512                         rtlpriv->stats.rxbytesunicast +=  skb->len;
 513                 }
 514
 515                 rtl_is_special_data(hw, skb, false);
 516
 517                 if (ieee80211_is_data(fc)) {
 518                         rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
 519
 520                         if (unicast)
 521                                 rtlpriv->link_info.num_rx_inperiod++;
 522                 }
 523
 524                 /* static bcn for roaming */
 525                 rtl_beacon_statistic(hw, skb);
 526
 527                 if (likely(rtl_action_proc(hw, skb, false)))
 528                         ieee80211_rx(hw, skb);
 529                 else
 530                         dev_kfree_skb_any(skb);
 531         }
 532 }
 533
 534 static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
 535 {
 536         struct sk_buff *_skb;
 537         struct sk_buff_head rx_queue;
 538         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 539
 540         skb_queue_head_init(&rx_queue);
 541         if (rtlusb->usb_rx_segregate_hdl)
 542                 rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
 543         WARN_ON(skb_queue_empty(&rx_queue));
 544         while (!skb_queue_empty(&rx_queue)) {
 545                 _skb = skb_dequeue(&rx_queue);
 546                 _rtl_usb_rx_process_agg(hw, _skb);
 547                 ieee80211_rx(hw, _skb);
 548         }
 549 }
 550
 551 #define __RX_SKB_MAX_QUEUED     32
 552
 553 static void _rtl_rx_work(unsigned long param)
 554 {
 555         struct rtl_usb *rtlusb = (struct rtl_usb *)param;
 556         struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
 557         struct sk_buff *skb;
 558
 559         while ((skb = skb_dequeue(&rtlusb->rx_queue))) {
 560                 if (unlikely(IS_USB_STOP(rtlusb))) {
 561                         dev_kfree_skb_any(skb);
 562                         continue;
 563                 }
 564
 565                 if (likely(!rtlusb->usb_rx_segregate_hdl)) {
 566                         _rtl_usb_rx_process_noagg(hw, skb);
 567                 } else {
 568                         /* TO DO */
 569                         _rtl_rx_pre_process(hw, skb);
 570                         pr_err("rx agg not supported\n");
 571                 }
 572         }
 573 }
 574
 575 static unsigned int _rtl_rx_get_padding(struct ieee80211_hdr *hdr,
 576                                         unsigned int len)
 577 {
 578         unsigned int padding = 0;
 579
 580         /* make function no-op when possible */
 581         if (NET_IP_ALIGN == 0 || len < sizeof(*hdr))
 582                 return 0;
 583
 584         /* alignment calculation as in lbtf_rx() / carl9170_rx_copy_data() */
 585         /* TODO: deduplicate common code, define helper function instead? */
 586
 587         if (ieee80211_is_data_qos(hdr->frame_control)) {
 588                 u8 *qc = ieee80211_get_qos_ctl(hdr);
 589
 590                 padding ^= NET_IP_ALIGN;
 591
 592                 /* Input might be invalid, avoid accessing memory outside
 593                  * the buffer.
 594                  */
 595                 if ((unsigned long)qc - (unsigned long)hdr < len &&
 596                     *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT)
 597                         padding ^= NET_IP_ALIGN;
 598         }
 599
 600         if (ieee80211_has_a4(hdr->frame_control))
 601                 padding ^= NET_IP_ALIGN;
 602
 603         return padding;
 604 }
 605
 606 #define __RADIO_TAP_SIZE_RSV    32
 607
 608 static void _rtl_rx_completed(struct urb *_urb)
 609 {
 610         struct rtl_usb *rtlusb = (struct rtl_usb *)_urb->context;
 611         struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
 612         struct rtl_priv *rtlpriv = rtl_priv(hw);
 613         int err = 0;
 614
 615         if (unlikely(IS_USB_STOP(rtlusb)))
 616                 goto free;
 617
 618         if (likely(0 == _urb->status)) {
 619                 unsigned int padding;
 620                 struct sk_buff *skb;
 621                 unsigned int qlen;
 622                 unsigned int size = _urb->actual_length;
 623                 struct ieee80211_hdr *hdr;
 624
 625                 if (size < RTL_RX_DESC_SIZE + sizeof(struct ieee80211_hdr)) {
 626                         RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 627                                  "Too short packet from bulk IN! (len: %d)\n",
 628                                  size);
 629                         goto resubmit;
 630                 }
 631
 632                 qlen = skb_queue_len(&rtlusb->rx_queue);
 633                 if (qlen >= __RX_SKB_MAX_QUEUED) {
 634                         RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 635                                  "Pending RX skbuff queue full! (qlen: %d)\n",
 636                                  qlen);
 637                         goto resubmit;
 638                 }
 639
 640                 hdr = (void *)(_urb->transfer_buffer + RTL_RX_DESC_SIZE);
 641                 padding = _rtl_rx_get_padding(hdr, size - RTL_RX_DESC_SIZE);
 642
 643                 skb = dev_alloc_skb(size + __RADIO_TAP_SIZE_RSV + padding);
 644                 if (!skb) {
 645                         RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 646                                  "Can't allocate skb for bulk IN!\n");
 647                         goto resubmit;
 648                 }
 649
 650                 _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
 651
 652                 /* Make sure the payload data is 4 byte aligned. */
 653                 skb_reserve(skb, padding);
 654
 655                 /* reserve some space for mac80211's radiotap */
 656                 skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
 657
 658                 memcpy(skb_put(skb, size), _urb->transfer_buffer, size);
 659
 660                 skb_queue_tail(&rtlusb->rx_queue, skb);
 661                 tasklet_schedule(&rtlusb->rx_work_tasklet);
 662
 663                 goto resubmit;
 664         }
 665
 666         switch (_urb->status) {
 667         /* disconnect */
 668         case -ENOENT:
 669         case -ECONNRESET:
 670         case -ENODEV:
 671         case -ESHUTDOWN:
 672                 goto free;
 673         default:
 674                 break;
 675         }
 676
 677 resubmit:
 678         usb_anchor_urb(_urb, &rtlusb->rx_submitted);
 679         err = usb_submit_urb(_urb, GFP_ATOMIC);
 680         if (unlikely(err)) {
 681                 usb_unanchor_urb(_urb);
 682                 goto free;
 683         }
 684         return;
 685
 686 free:
 687         /* On some architectures, usb_free_coherent must not be called from
 688          * hardirq context. Queue urb to cleanup list.
 689          */
 690         usb_anchor_urb(_urb, &rtlusb->rx_cleanup_urbs);
 691 }
 692
 693 #undef __RADIO_TAP_SIZE_RSV
 694
 695 static void _rtl_usb_cleanup_rx(struct ieee80211_hw *hw)
 696 {
 697         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 698         struct urb *urb;
 699
 700         usb_kill_anchored_urbs(&rtlusb->rx_submitted);
 701
 702         tasklet_kill(&rtlusb->rx_work_tasklet);
 703         skb_queue_purge(&rtlusb->rx_queue);
 704
 705         while ((urb = usb_get_from_anchor(&rtlusb->rx_cleanup_urbs))) {
 706                 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
 707                                 urb->transfer_buffer, urb->transfer_dma);
 708                 usb_free_urb(urb);
 709         }
 710 }
 711
 712 static int _rtl_usb_receive(struct ieee80211_hw *hw)
 713 {
 714         struct urb *urb;
 715         int err;
 716         int i;
 717         struct rtl_priv *rtlpriv = rtl_priv(hw);
 718         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 719
 720         WARN_ON(0 == rtlusb->rx_urb_num);
 721         /* 1600 == 1514 + max WLAN header + rtk info */
 722         WARN_ON(rtlusb->rx_max_size < 1600);
 723
 724         for (i = 0; i < rtlusb->rx_urb_num; i++) {
 725                 err = -ENOMEM;
 726                 urb = usb_alloc_urb(0, GFP_KERNEL);
 727                 if (!urb) {
 728                         RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 729                                  "Failed to alloc URB!!\n");
 730                         goto err_out;
 731                 }
 732
 733                 err = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
 734                 if (err < 0) {
 735                         RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 736                                  "Failed to prep_rx_urb!!\n");
 737                         usb_free_urb(urb);
 738                         goto err_out;
 739                 }
 740
 741                 usb_anchor_urb(urb, &rtlusb->rx_submitted);
 742                 err = usb_submit_urb(urb, GFP_KERNEL);
 743                 if (err)
 744                         goto err_out;
 745                 usb_free_urb(urb);
 746         }
 747         return 0;
 748
 749 err_out:
 750         usb_kill_anchored_urbs(&rtlusb->rx_submitted);
 751         _rtl_usb_cleanup_rx(hw);
 752         return err;
 753 }
 754
 755 static int rtl_usb_start(struct ieee80211_hw *hw)
 756 {
 757         int err;
 758         struct rtl_priv *rtlpriv = rtl_priv(hw);
 759         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 760         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 761
 762         err = rtlpriv->cfg->ops->hw_init(hw);
 763         if (!err) {
 764                 rtl_init_rx_config(hw);
 765
 766                 /* Enable software */
 767                 SET_USB_START(rtlusb);
 768                 /* should after adapter start and interrupt enable. */
 769                 set_hal_start(rtlhal);
 770
 771                 /* Start bulk IN */
 772                 err = _rtl_usb_receive(hw);
 773         }
 774
 775         return err;
 776 }
 777 /**
 778  *
 779  *
 780  */
 781
 782 /*=======================  tx =========================================*/
 783 static void rtl_usb_cleanup(struct ieee80211_hw *hw)
 784 {
 785         u32 i;
 786         struct sk_buff *_skb;
 787         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 788         struct ieee80211_tx_info *txinfo;
 789
 790         SET_USB_STOP(rtlusb);
 791
 792         /* clean up rx stuff. */
 793         _rtl_usb_cleanup_rx(hw);
 794
 795         /* clean up tx stuff */
 796         for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
 797                 while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
 798                         rtlusb->usb_tx_cleanup(hw, _skb);
 799                         txinfo = IEEE80211_SKB_CB(_skb);
 800                         ieee80211_tx_info_clear_status(txinfo);
 801                         txinfo->flags |= IEEE80211_TX_STAT_ACK;
 802                         ieee80211_tx_status_irqsafe(hw, _skb);
 803                 }
 804                 usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
 805         }
 806         usb_kill_anchored_urbs(&rtlusb->tx_submitted);
 807 }
 808
 809 /**
 810  *
 811  * We may add some struct into struct rtl_usb later. Do deinit here.
 812  *
 813  */
 814 static void rtl_usb_deinit(struct ieee80211_hw *hw)
 815 {
 816         rtl_usb_cleanup(hw);
 817 }
 818
 819 static void rtl_usb_stop(struct ieee80211_hw *hw)
 820 {
 821         struct rtl_priv *rtlpriv = rtl_priv(hw);
 822         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 823         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 824
 825         /* should after adapter start and interrupt enable. */
 826         set_hal_stop(rtlhal);
 827         cancel_work_sync(&rtlpriv->works.fill_h2c_cmd);
 828         /* Enable software */
 829         SET_USB_STOP(rtlusb);
 830         rtl_usb_deinit(hw);
 831         rtlpriv->cfg->ops->hw_disable(hw);
 832 }
 833
 834 static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
 835 {
 836         int err;
 837         struct rtl_priv *rtlpriv = rtl_priv(hw);
 838         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 839
 840         usb_anchor_urb(_urb, &rtlusb->tx_submitted);
 841         err = usb_submit_urb(_urb, GFP_ATOMIC);
 842         if (err < 0) {
 843                 struct sk_buff *skb;
 844
 845                 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 846                          "Failed to submit urb\n");
 847                 usb_unanchor_urb(_urb);
 848                 skb = (struct sk_buff *)_urb->context;
 849                 kfree_skb(skb);
 850         }
 851         usb_free_urb(_urb);
 852 }
 853
 854 static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
 855                         struct sk_buff *skb)
 856 {
 857         struct rtl_priv *rtlpriv = rtl_priv(hw);
 858         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 859         struct ieee80211_tx_info *txinfo;
 860
 861         rtlusb->usb_tx_post_hdl(hw, urb, skb);
 862         skb_pull(skb, RTL_TX_HEADER_SIZE);
 863         txinfo = IEEE80211_SKB_CB(skb);
 864         ieee80211_tx_info_clear_status(txinfo);
 865         txinfo->flags |= IEEE80211_TX_STAT_ACK;
 866
 867         if (urb->status) {
 868                 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 869                          "Urb has error status 0x%X\n", urb->status);
 870                 goto out;
 871         }
 872         /*  TODO:       statistics */
 873 out:
 874         ieee80211_tx_status_irqsafe(hw, skb);
 875         return urb->status;
 876 }
 877
 878 static void _rtl_tx_complete(struct urb *urb)
 879 {
 880         struct sk_buff *skb = (struct sk_buff *)urb->context;
 881         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 882         struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
 883         struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
 884         int err;
 885
 886         if (unlikely(IS_USB_STOP(rtlusb)))
 887                 return;
 888         err = _usb_tx_post(hw, urb, skb);
 889         if (err) {
 890                 /* Ignore error and keep issuiing other urbs */
 891                 return;
 892         }
 893 }
 894
 895 static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
 896                                 struct sk_buff *skb, u32 ep_num)
 897 {
 898         struct rtl_priv *rtlpriv = rtl_priv(hw);
 899         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 900         struct urb *_urb;
 901
 902         WARN_ON(NULL == skb);
 903         _urb = usb_alloc_urb(0, GFP_ATOMIC);
 904         if (!_urb) {
 905                 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 906                          "Can't allocate URB for bulk out!\n");
 907                 kfree_skb(skb);
 908                 return NULL;
 909         }
 910         _rtl_install_trx_info(rtlusb, skb, ep_num);
 911         usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
 912                           ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
 913         _urb->transfer_flags |= URB_ZERO_PACKET;
 914         return _urb;
 915 }
 916
 917 static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
 918                        enum rtl_txq qnum)
 919 {
 920         struct rtl_priv *rtlpriv = rtl_priv(hw);
 921         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 922         u32 ep_num;
 923         struct urb *_urb = NULL;
 924         struct sk_buff *_skb = NULL;
 925
 926         WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
 927         if (unlikely(IS_USB_STOP(rtlusb))) {
 928                 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
 929                          "USB device is stopping...\n");
 930                 kfree_skb(skb);
 931                 return;
 932         }
 933         ep_num = rtlusb->ep_map.ep_mapping[qnum];
 934         _skb = skb;
 935         _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
 936         if (unlikely(!_urb)) {
 937                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 938                          "Can't allocate urb. Drop skb!\n");
 939                 kfree_skb(skb);
 940                 return;
 941         }
 942         _rtl_submit_tx_urb(hw, _urb);
 943 }
 944
 945 static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
 946                                    struct ieee80211_sta *sta,
 947                                    struct sk_buff *skb,
 948                                    u16 hw_queue)
 949 {
 950         struct rtl_priv *rtlpriv = rtl_priv(hw);
 951         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 952         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 953         struct rtl_tx_desc *pdesc = NULL;
 954         struct rtl_tcb_desc tcb_desc;
 955         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
 956         __le16 fc = hdr->frame_control;
 957         u8 *pda_addr = hdr->addr1;
 958         /* ssn */
 959         u8 *qc = NULL;
 960         u8 tid = 0;
 961         u16 seq_number = 0;
 962
 963         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
 964         if (ieee80211_is_auth(fc)) {
 965                 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
 966                 rtl_ips_nic_on(hw);
 967         }
 968
 969         if (rtlpriv->psc.sw_ps_enabled) {
 970                 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
 971                     !ieee80211_has_pm(fc))
 972                         hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 973         }
 974
 975         rtl_action_proc(hw, skb, true);
 976         if (is_multicast_ether_addr(pda_addr))
 977                 rtlpriv->stats.txbytesmulticast += skb->len;
 978         else if (is_broadcast_ether_addr(pda_addr))
 979                 rtlpriv->stats.txbytesbroadcast += skb->len;
 980         else
 981                 rtlpriv->stats.txbytesunicast += skb->len;
 982         if (ieee80211_is_data_qos(fc)) {
 983                 qc = ieee80211_get_qos_ctl(hdr);
 984                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
 985                 seq_number = (le16_to_cpu(hdr->seq_ctrl) &
 986                              IEEE80211_SCTL_SEQ) >> 4;
 987                 seq_number += 1;
 988                 seq_number <<= 4;
 989         }
 990         rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, sta, skb,
 991                                         hw_queue, &tcb_desc);
 992         if (!ieee80211_has_morefrags(hdr->frame_control)) {
 993                 if (qc)
 994                         mac->tids[tid].seq_number = seq_number;
 995         }
 996         if (ieee80211_is_data(fc))
 997                 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
 998 }
 999
1000 static int rtl_usb_tx(struct ieee80211_hw *hw,
1001                       struct ieee80211_sta *sta,
1002                       struct sk_buff *skb,
1003                       struct rtl_tcb_desc *dummy)
1004 {
1005         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1006         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1007         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
1008         __le16 fc = hdr->frame_control;
1009         u16 hw_queue;
1010
1011         if (unlikely(is_hal_stop(rtlhal)))
1012                 goto err_free;
1013         hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
1014         _rtl_usb_tx_preprocess(hw, sta, skb, hw_queue);
1015         _rtl_usb_transmit(hw, skb, hw_queue);
1016         return NETDEV_TX_OK;
1017
1018 err_free:
1019         dev_kfree_skb_any(skb);
1020         return NETDEV_TX_OK;
1021 }
1022
1023 static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
1024                                         struct ieee80211_sta *sta,
1025                                         struct sk_buff *skb)
1026 {
1027         return false;
1028 }
1029
1030 static void rtl_fill_h2c_cmd_work_callback(struct work_struct *work)
1031 {
1032         struct rtl_works *rtlworks =
1033             container_of(work, struct rtl_works, fill_h2c_cmd);
1034         struct ieee80211_hw *hw = rtlworks->hw;
1035         struct rtl_priv *rtlpriv = rtl_priv(hw);
1036
1037         rtlpriv->cfg->ops->fill_h2c_cmd(hw, H2C_RA_MASK, 5, rtlpriv->rate_mask);
1038 }
1039
1040 static struct rtl_intf_ops rtl_usb_ops = {
1041         .adapter_start = rtl_usb_start,
1042         .adapter_stop = rtl_usb_stop,
1043         .adapter_tx = rtl_usb_tx,
1044         .waitq_insert = rtl_usb_tx_chk_waitq_insert,
1045 };
1046
1047 int rtl_usb_probe(struct usb_interface *intf,
1048                   const struct usb_device_id *id,
1049                   struct rtl_hal_cfg *rtl_hal_cfg)
1050 {
1051         int err;
1052         struct ieee80211_hw *hw = NULL;
1053         struct rtl_priv *rtlpriv = NULL;
1054         struct usb_device       *udev;
1055         struct rtl_usb_priv *usb_priv;
1056
1057         hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
1058                                 sizeof(struct rtl_usb_priv), &rtl_ops);
1059         if (!hw) {
1060                 RT_ASSERT(false, "ieee80211 alloc failed\n");
1061                 return -ENOMEM;
1062         }
1063         rtlpriv = hw->priv;
1064         rtlpriv->usb_data = kzalloc(RTL_USB_MAX_RX_COUNT * sizeof(u32),
1065                                     GFP_KERNEL);
1066         if (!rtlpriv->usb_data)
1067                 return -ENOMEM;
1068
1069         /* this spin lock must be initialized early */
1070         spin_lock_init(&rtlpriv->locks.usb_lock);
1071         INIT_WORK(&rtlpriv->works.fill_h2c_cmd,
1072                   rtl_fill_h2c_cmd_work_callback);
1073
1074         rtlpriv->usb_data_index = 0;
1075         init_completion(&rtlpriv->firmware_loading_complete);
1076         SET_IEEE80211_DEV(hw, &intf->dev);
1077         udev = interface_to_usbdev(intf);
1078         usb_get_dev(udev);
1079         usb_priv = rtl_usbpriv(hw);
1080         memset(usb_priv, 0, sizeof(*usb_priv));
1081         usb_priv->dev.intf = intf;
1082         usb_priv->dev.udev = udev;
1083         usb_set_intfdata(intf, hw);
1084         /* init cfg & intf_ops */
1085         rtlpriv->rtlhal.interface = INTF_USB;
1086         rtlpriv->cfg = rtl_hal_cfg;
1087         rtlpriv->intf_ops = &rtl_usb_ops;
1088         rtl_dbgp_flag_init(hw);
1089         /* Init IO handler */
1090         _rtl_usb_io_handler_init(&udev->dev, hw);
1091         rtlpriv->cfg->ops->read_chip_version(hw);
1092         /*like read eeprom and so on */
1093         rtlpriv->cfg->ops->read_eeprom_info(hw);
1094         err = _rtl_usb_init(hw);
1095         if (err)
1096                 goto error_out;
1097         rtl_usb_init_sw(hw);
1098         /* Init mac80211 sw */
1099         err = rtl_init_core(hw);
1100         if (err) {
1101                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1102                          "Can't allocate sw for mac80211\n");
1103                 goto error_out;
1104         }
1105         if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
1106                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
1107                 goto error_out;
1108         }
1109         rtlpriv->cfg->ops->init_sw_leds(hw);
1110
1111         return 0;
1112 error_out:
1113         rtl_deinit_core(hw);
1114         _rtl_usb_io_handler_release(hw);
1115         usb_put_dev(udev);
1116         complete(&rtlpriv->firmware_loading_complete);
1117         return -ENODEV;
1118 }
1119 EXPORT_SYMBOL(rtl_usb_probe);
1120
1121 void rtl_usb_disconnect(struct usb_interface *intf)
1122 {
1123         struct ieee80211_hw *hw = usb_get_intfdata(intf);
1124         struct rtl_priv *rtlpriv = rtl_priv(hw);
1125         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1126         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1127
1128         if (unlikely(!rtlpriv))
1129                 return;
1130
1131         /* just in case driver is removed before firmware callback */
1132         wait_for_completion(&rtlpriv->firmware_loading_complete);
1133         /*ieee80211_unregister_hw will call ops_stop */
1134         if (rtlmac->mac80211_registered == 1) {
1135                 ieee80211_unregister_hw(hw);
1136                 rtlmac->mac80211_registered = 0;
1137         } else {
1138                 rtl_deinit_deferred_work(hw);
1139                 rtlpriv->intf_ops->adapter_stop(hw);
1140         }
1141         /*deinit rfkill */
1142         /* rtl_deinit_rfkill(hw); */
1143         rtl_usb_deinit(hw);
1144         rtl_deinit_core(hw);
1145         kfree(rtlpriv->usb_data);
1146         rtlpriv->cfg->ops->deinit_sw_leds(hw);
1147         rtlpriv->cfg->ops->deinit_sw_vars(hw);
1148         _rtl_usb_io_handler_release(hw);
1149         usb_put_dev(rtlusb->udev);
1150         usb_set_intfdata(intf, NULL);
1151         ieee80211_free_hw(hw);
1152 }
1153 EXPORT_SYMBOL(rtl_usb_disconnect);
1154
1155 int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
1156 {
1157         return 0;
1158 }
1159 EXPORT_SYMBOL(rtl_usb_suspend);
1160
1161 int rtl_usb_resume(struct usb_interface *pusb_intf)
1162 {
1163         return 0;
1164 }
1165 EXPORT_SYMBOL(rtl_usb_resume);