drivers/staging/rtl8712/usb_intf.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  * usb_intf.c
   4  *
   5  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   6  * Linux device driver for RTL8192SU
   7  *
   8  * Modifications for inclusion into the Linux staging tree are
   9  * Copyright(c) 2010 Larry Finger. All rights reserved.
  10  *
  11  * Contact information:
  12  * WLAN FAE <[email protected]>
  13  * Larry Finger <[email protected]>
  14  *
  15  ******************************************************************************/
  16
  17 #define _HCI_INTF_C_
  18
  19 #include <linux/usb.h>
  20 #include <linux/module.h>
  21 #include <linux/firmware.h>
  22
  23 #include "osdep_service.h"
  24 #include "drv_types.h"
  25 #include "recv_osdep.h"
  26 #include "xmit_osdep.h"
  27 #include "rtl8712_efuse.h"
  28 #include "usb_ops.h"
  29 #include "usb_osintf.h"
  30
  31 static struct usb_interface *pintf;
  32
  33 static int r871xu_drv_init(struct usb_interface *pusb_intf,
  34                            const struct usb_device_id *pdid);
  35
  36 static void r871xu_dev_remove(struct usb_interface *pusb_intf);
  37
  38 static const struct usb_device_id rtl871x_usb_id_tbl[] = {
  39 /* RTL8188SU */
  40         /* Realtek */
  41         {USB_DEVICE(0x0BDA, 0x8171)},
  42         {USB_DEVICE(0x0bda, 0x8173)},
  43         {USB_DEVICE(0x0bda, 0x8712)},
  44         {USB_DEVICE(0x0bda, 0x8713)},
  45         {USB_DEVICE(0x0bda, 0xC512)},
  46         /* Abocom */
  47         {USB_DEVICE(0x07B8, 0x8188)},
  48         /* ASUS */
  49         {USB_DEVICE(0x0B05, 0x1786)},
  50         {USB_DEVICE(0x0B05, 0x1791)}, /* 11n mode disable */
  51         /* Belkin */
  52         {USB_DEVICE(0x050D, 0x945A)},
  53         /* ISY IWL - Belkin clone */
  54         {USB_DEVICE(0x050D, 0x11F1)},
  55         /* Corega */
  56         {USB_DEVICE(0x07AA, 0x0047)},
  57         /* D-Link */
  58         {USB_DEVICE(0x2001, 0x3306)},
  59         {USB_DEVICE(0x07D1, 0x3306)}, /* 11n mode disable */
  60         /* Edimax */
  61         {USB_DEVICE(0x7392, 0x7611)},
  62         /* EnGenius */
  63         {USB_DEVICE(0x1740, 0x9603)},
  64         /* Hawking */
  65         {USB_DEVICE(0x0E66, 0x0016)},
  66         /* Hercules */
  67         {USB_DEVICE(0x06F8, 0xE034)},
  68         {USB_DEVICE(0x06F8, 0xE032)},
  69         /* Logitec */
  70         {USB_DEVICE(0x0789, 0x0167)},
  71         /* PCI */
  72         {USB_DEVICE(0x2019, 0xAB28)},
  73         {USB_DEVICE(0x2019, 0xED16)},
  74         /* Sitecom */
  75         {USB_DEVICE(0x0DF6, 0x0057)},
  76         {USB_DEVICE(0x0DF6, 0x0045)},
  77         {USB_DEVICE(0x0DF6, 0x0059)}, /* 11n mode disable */
  78         {USB_DEVICE(0x0DF6, 0x004B)},
  79         {USB_DEVICE(0x0DF6, 0x005B)},
  80         {USB_DEVICE(0x0DF6, 0x005D)},
  81         {USB_DEVICE(0x0DF6, 0x0063)},
  82         /* Sweex */
  83         {USB_DEVICE(0x177F, 0x0154)},
  84         /* Thinkware */
  85         {USB_DEVICE(0x0BDA, 0x5077)},
  86         /* Toshiba */
  87         {USB_DEVICE(0x1690, 0x0752)},
  88         /* - */
  89         {USB_DEVICE(0x20F4, 0x646B)},
  90         {USB_DEVICE(0x083A, 0xC512)},
  91         {USB_DEVICE(0x25D4, 0x4CA1)},
  92         {USB_DEVICE(0x25D4, 0x4CAB)},
  93
  94 /* RTL8191SU */
  95         /* Realtek */
  96         {USB_DEVICE(0x0BDA, 0x8172)},
  97         {USB_DEVICE(0x0BDA, 0x8192)},
  98         /* Amigo */
  99         {USB_DEVICE(0x0EB0, 0x9061)},
 100         /* ASUS/EKB */
 101         {USB_DEVICE(0x13D3, 0x3323)},
 102         {USB_DEVICE(0x13D3, 0x3311)}, /* 11n mode disable */
 103         {USB_DEVICE(0x13D3, 0x3342)},
 104         /* ASUS/EKBLenovo */
 105         {USB_DEVICE(0x13D3, 0x3333)},
 106         {USB_DEVICE(0x13D3, 0x3334)},
 107         {USB_DEVICE(0x13D3, 0x3335)}, /* 11n mode disable */
 108         {USB_DEVICE(0x13D3, 0x3336)}, /* 11n mode disable */
 109         /* ASUS/Media BOX */
 110         {USB_DEVICE(0x13D3, 0x3309)},
 111         /* Belkin */
 112         {USB_DEVICE(0x050D, 0x815F)},
 113         /* D-Link */
 114         {USB_DEVICE(0x07D1, 0x3302)},
 115         {USB_DEVICE(0x07D1, 0x3300)},
 116         {USB_DEVICE(0x07D1, 0x3303)},
 117         /* Edimax */
 118         {USB_DEVICE(0x7392, 0x7612)},
 119         /* EnGenius */
 120         {USB_DEVICE(0x1740, 0x9605)},
 121         /* Guillemot */
 122         {USB_DEVICE(0x06F8, 0xE031)},
 123         /* Hawking */
 124         {USB_DEVICE(0x0E66, 0x0015)},
 125         /* Mediao */
 126         {USB_DEVICE(0x13D3, 0x3306)},
 127         /* PCI */
 128         {USB_DEVICE(0x2019, 0xED18)},
 129         {USB_DEVICE(0x2019, 0x4901)},
 130         /* Sitecom */
 131         {USB_DEVICE(0x0DF6, 0x0058)},
 132         {USB_DEVICE(0x0DF6, 0x0049)},
 133         {USB_DEVICE(0x0DF6, 0x004C)},
 134         {USB_DEVICE(0x0DF6, 0x006C)},
 135         {USB_DEVICE(0x0DF6, 0x0064)},
 136         /* Skyworth */
 137         {USB_DEVICE(0x14b2, 0x3300)},
 138         {USB_DEVICE(0x14b2, 0x3301)},
 139         {USB_DEVICE(0x14B2, 0x3302)},
 140         /* - */
 141         {USB_DEVICE(0x04F2, 0xAFF2)},
 142         {USB_DEVICE(0x04F2, 0xAFF5)},
 143         {USB_DEVICE(0x04F2, 0xAFF6)},
 144         {USB_DEVICE(0x13D3, 0x3339)},
 145         {USB_DEVICE(0x13D3, 0x3340)}, /* 11n mode disable */
 146         {USB_DEVICE(0x13D3, 0x3341)}, /* 11n mode disable */
 147         {USB_DEVICE(0x13D3, 0x3310)},
 148         {USB_DEVICE(0x13D3, 0x3325)},
 149
 150 /* RTL8192SU */
 151         /* Realtek */
 152         {USB_DEVICE(0x0BDA, 0x8174)},
 153         /* Belkin */
 154         {USB_DEVICE(0x050D, 0x845A)},
 155         /* Corega */
 156         {USB_DEVICE(0x07AA, 0x0051)},
 157         /* Edimax */
 158         {USB_DEVICE(0x7392, 0x7622)},
 159         /* NEC */
 160         {USB_DEVICE(0x0409, 0x02B6)},
 161         {}
 162 };
 163
 164 MODULE_DEVICE_TABLE(usb, rtl871x_usb_id_tbl);
 165
 166 static struct specific_device_id specific_device_id_tbl[] = {
 167         {.idVendor = 0x0b05, .idProduct = 0x1791,
 168                  .flags = SPEC_DEV_ID_DISABLE_HT},
 169         {.idVendor = 0x0df6, .idProduct = 0x0059,
 170                  .flags = SPEC_DEV_ID_DISABLE_HT},
 171         {.idVendor = 0x13d3, .idProduct = 0x3306,
 172                  .flags = SPEC_DEV_ID_DISABLE_HT},
 173         {.idVendor = 0x13D3, .idProduct = 0x3311,
 174                  .flags = SPEC_DEV_ID_DISABLE_HT},
 175         {.idVendor = 0x13d3, .idProduct = 0x3335,
 176                  .flags = SPEC_DEV_ID_DISABLE_HT},
 177         {.idVendor = 0x13d3, .idProduct = 0x3336,
 178                  .flags = SPEC_DEV_ID_DISABLE_HT},
 179         {.idVendor = 0x13d3, .idProduct = 0x3340,
 180                  .flags = SPEC_DEV_ID_DISABLE_HT},
 181         {.idVendor = 0x13d3, .idProduct = 0x3341,
 182                  .flags = SPEC_DEV_ID_DISABLE_HT},
 183         {}
 184 };
 185
 186 struct drv_priv {
 187         struct usb_driver r871xu_drv;
 188         int drv_registered;
 189 };
 190
 191 #ifdef CONFIG_PM
 192 static int r871x_suspend(struct usb_interface *pusb_intf, pm_message_t state)
 193 {
 194         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
 195         struct _adapter *padapter = netdev_priv(pnetdev);
 196
 197         netdev_info(pnetdev, "Suspending...\n");
 198         padapter->suspended = true;
 199         rtl871x_intf_stop(padapter);
 200         if (pnetdev->netdev_ops->ndo_stop)
 201                 pnetdev->netdev_ops->ndo_stop(pnetdev);
 202         mdelay(10);
 203         netif_device_detach(pnetdev);
 204         return 0;
 205 }
 206
 207 static void rtl871x_intf_resume(struct _adapter *padapter)
 208 {
 209         if (padapter->dvobjpriv.inirp_init)
 210                 padapter->dvobjpriv.inirp_init(padapter);
 211 }
 212
 213 static int r871x_resume(struct usb_interface *pusb_intf)
 214 {
 215         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
 216         struct _adapter *padapter = netdev_priv(pnetdev);
 217
 218         netdev_info(pnetdev,  "Resuming...\n");
 219         netif_device_attach(pnetdev);
 220         if (pnetdev->netdev_ops->ndo_open)
 221                 pnetdev->netdev_ops->ndo_open(pnetdev);
 222         padapter->suspended = false;
 223         rtl871x_intf_resume(padapter);
 224         return 0;
 225 }
 226 #endif
 227
 228 static struct drv_priv drvpriv = {
 229         .r871xu_drv.name = "r8712u",
 230         .r871xu_drv.id_table = rtl871x_usb_id_tbl,
 231         .r871xu_drv.probe = r871xu_drv_init,
 232         .r871xu_drv.disconnect = r871xu_dev_remove,
 233 #ifdef CONFIG_PM
 234         .r871xu_drv.suspend = r871x_suspend,
 235         .r871xu_drv.resume = r871x_resume,
 236 #endif
 237 };
 238
 239 static uint r8712_usb_dvobj_init(struct _adapter *padapter)
 240 {
 241         uint    status = _SUCCESS;
 242         struct  usb_host_interface              *phost_iface;
 243         struct  usb_interface_descriptor        *piface_desc;
 244         struct dvobj_priv *pdvobjpriv = &padapter->dvobjpriv;
 245         struct usb_device *pusbd = pdvobjpriv->pusbdev;
 246
 247         pdvobjpriv->padapter = padapter;
 248         padapter->eeprom_address_size = 6;
 249         phost_iface = pintf->cur_altsetting;
 250         piface_desc = &phost_iface->desc;
 251         pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;
 252         if (pusbd->speed == USB_SPEED_HIGH) {
 253                 pdvobjpriv->ishighspeed = true;
 254                 dev_info(&pusbd->dev, "r8712u: USB_SPEED_HIGH with %d endpoints\n",
 255                          pdvobjpriv->nr_endpoint);
 256         } else {
 257                 pdvobjpriv->ishighspeed = false;
 258                 dev_info(&pusbd->dev, "r8712u: USB_SPEED_LOW with %d endpoints\n",
 259                          pdvobjpriv->nr_endpoint);
 260         }
 261         if ((r8712_alloc_io_queue(padapter)) == _FAIL)
 262                 status = _FAIL;
 263         return status;
 264 }
 265
 266 static void r8712_usb_dvobj_deinit(struct _adapter *padapter)
 267 {
 268         r8712_free_io_queue(padapter);
 269 }
 270
 271 void rtl871x_intf_stop(struct _adapter *padapter)
 272 {
 273         /*disable_hw_interrupt*/
 274         if (!padapter->surprise_removed) {
 275                 /*device still exists, so driver can do i/o operation
 276                  * TODO:
 277                  */
 278         }
 279
 280         /* cancel in irp */
 281         if (padapter->dvobjpriv.inirp_deinit)
 282                 padapter->dvobjpriv.inirp_deinit(padapter);
 283         /* cancel out irp */
 284         r8712_usb_write_port_cancel(padapter);
 285         /* TODO:cancel other irps */
 286 }
 287
 288 void r871x_dev_unload(struct _adapter *padapter)
 289 {
 290         if (padapter->bup) {
 291                 /*s1.*/
 292                 padapter->driver_stopped = true;
 293
 294                 /*s3.*/
 295                 rtl871x_intf_stop(padapter);
 296
 297                 /*s4.*/
 298                 r8712_stop_drv_threads(padapter);
 299
 300                 /*s5.*/
 301                 if (!padapter->surprise_removed) {
 302                         padapter->hw_init_completed = false;
 303                         rtl8712_hal_deinit(padapter);
 304                 }
 305
 306                 padapter->bup = false;
 307         }
 308 }
 309
 310 static void disable_ht_for_spec_devid(const struct usb_device_id *pdid,
 311                                       struct _adapter *padapter)
 312 {
 313         u16 vid, pid;
 314         u32 flags;
 315         int i;
 316         int num = ARRAY_SIZE(specific_device_id_tbl);
 317
 318         for (i = 0; i < num; i++) {
 319                 vid = specific_device_id_tbl[i].idVendor;
 320                 pid = specific_device_id_tbl[i].idProduct;
 321                 flags = specific_device_id_tbl[i].flags;
 322
 323                 if ((pdid->idVendor == vid) && (pdid->idProduct == pid) &&
 324                     (flags & SPEC_DEV_ID_DISABLE_HT)) {
 325                         padapter->registrypriv.ht_enable = 0;
 326                         padapter->registrypriv.cbw40_enable = 0;
 327                         padapter->registrypriv.ampdu_enable = 0;
 328                 }
 329         }
 330 }
 331
 332 static const struct device_type wlan_type = {
 333         .name = "wlan",
 334 };
 335
 336 /*
 337  * drv_init() - a device potentially for us
 338  *
 339  * notes: drv_init() is called when the bus driver has located a card for us
 340  * to support. We accept the new device by returning 0.
 341  */
 342 static int r871xu_drv_init(struct usb_interface *pusb_intf,
 343                            const struct usb_device_id *pdid)
 344 {
 345         uint status;
 346         struct _adapter *padapter = NULL;
 347         struct dvobj_priv *pdvobjpriv;
 348         struct net_device *pnetdev;
 349         struct usb_device *udev;
 350
 351         /* In this probe function, O.S. will provide the usb interface pointer
 352          * to driver. We have to increase the reference count of the usb device
 353          * structure by using the usb_get_dev function.
 354          */
 355         udev = interface_to_usbdev(pusb_intf);
 356         usb_get_dev(udev);
 357         pintf = pusb_intf;
 358         /* step 1. */
 359         pnetdev = r8712_init_netdev();
 360         if (!pnetdev)
 361                 goto put_dev;
 362         padapter = netdev_priv(pnetdev);
 363         disable_ht_for_spec_devid(pdid, padapter);
 364         pdvobjpriv = &padapter->dvobjpriv;
 365         pdvobjpriv->padapter = padapter;
 366         padapter->dvobjpriv.pusbdev = udev;
 367         padapter->pusb_intf = pusb_intf;
 368         usb_set_intfdata(pusb_intf, pnetdev);
 369         SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
 370         pnetdev->dev.type = &wlan_type;
 371         /* step 2. */
 372         padapter->dvobj_init = r8712_usb_dvobj_init;
 373         padapter->dvobj_deinit = r8712_usb_dvobj_deinit;
 374         padapter->halpriv.hal_bus_init = r8712_usb_hal_bus_init;
 375         padapter->dvobjpriv.inirp_init = r8712_usb_inirp_init;
 376         padapter->dvobjpriv.inirp_deinit = r8712_usb_inirp_deinit;
 377         /* step 3.
 378          * initialize the dvobj_priv
 379          */
 380
 381         status = padapter->dvobj_init(padapter);
 382         if (status != _SUCCESS)
 383                 goto free_netdev;
 384
 385         /* step 4. */
 386         status = r8712_init_drv_sw(padapter);
 387         if (status)
 388                 goto dvobj_deinit;
 389         /* step 5. read efuse/eeprom data and get mac_addr */
 390         {
 391                 int i, offset;
 392                 u8 mac[6];
 393                 u8 tmpU1b, AutoloadFail, eeprom_CustomerID;
 394                 u8 *pdata = padapter->eeprompriv.efuse_eeprom_data;
 395
 396                 tmpU1b = r8712_read8(padapter, EE_9346CR);/*CR9346*/
 397
 398                 /* To check system boot selection.*/
 399                 dev_info(&udev->dev, "r8712u: Boot from %s: Autoload %s\n",
 400                          (tmpU1b & _9356SEL) ? "EEPROM" : "EFUSE",
 401                          (tmpU1b & _EEPROM_EN) ? "OK" : "Failed");
 402
 403                 /* To check autoload success or not.*/
 404                 if (tmpU1b & _EEPROM_EN) {
 405                         AutoloadFail = true;
 406                         /* The following operations prevent Efuse leakage by
 407                          * turning on 2.5V.
 408                          */
 409                         tmpU1b = r8712_read8(padapter, EFUSE_TEST + 3);
 410                         r8712_write8(padapter, EFUSE_TEST + 3, tmpU1b | 0x80);
 411                         msleep(20);
 412                         r8712_write8(padapter, EFUSE_TEST + 3,
 413                                      (tmpU1b & (~BIT(7))));
 414
 415                         /* Retrieve Chip version.
 416                          * Recognize IC version by Reg0x4 BIT15.
 417                          */
 418                         tmpU1b = (u8)((r8712_read32(padapter, PMC_FSM) >> 15) &
 419                                                     0x1F);
 420                         if (tmpU1b == 0x3)
 421                                 padapter->registrypriv.chip_version =
 422                                      RTL8712_3rdCUT;
 423                         else
 424                                 padapter->registrypriv.chip_version =
 425                                      (tmpU1b >> 1) + 1;
 426                         switch (padapter->registrypriv.chip_version) {
 427                         case RTL8712_1stCUT:
 428                         case RTL8712_2ndCUT:
 429                         case RTL8712_3rdCUT:
 430                                 break;
 431                         default:
 432                                 padapter->registrypriv.chip_version =
 433                                      RTL8712_2ndCUT;
 434                                 break;
 435                         }
 436
 437                         for (i = 0, offset = 0; i < 128; i += 8, offset++)
 438                                 r8712_efuse_pg_packet_read(padapter, offset,
 439                                                      &pdata[i]);
 440
 441                         if (!r8712_initmac || !mac_pton(r8712_initmac, mac)) {
 442                                 /* Use the mac address stored in the Efuse
 443                                  * offset = 0x12 for usb in efuse
 444                                  */
 445                                 ether_addr_copy(mac, &pdata[0x12]);
 446                         }
 447                         eeprom_CustomerID = pdata[0x52];
 448                         switch (eeprom_CustomerID) {
 449                         case EEPROM_CID_ALPHA:
 450                                 padapter->eeprompriv.CustomerID =
 451                                                  RT_CID_819x_ALPHA;
 452                                 break;
 453                         case EEPROM_CID_CAMEO:
 454                                 padapter->eeprompriv.CustomerID =
 455                                                  RT_CID_819x_CAMEO;
 456                                 break;
 457                         case EEPROM_CID_SITECOM:
 458                                 padapter->eeprompriv.CustomerID =
 459                                                  RT_CID_819x_Sitecom;
 460                                 break;
 461                         case EEPROM_CID_COREGA:
 462                                 padapter->eeprompriv.CustomerID =
 463                                                  RT_CID_COREGA;
 464                                 break;
 465                         case EEPROM_CID_Senao:
 466                                 padapter->eeprompriv.CustomerID =
 467                                                  RT_CID_819x_Senao;
 468                                 break;
 469                         case EEPROM_CID_EDIMAX_BELKIN:
 470                                 padapter->eeprompriv.CustomerID =
 471                                                  RT_CID_819x_Edimax_Belkin;
 472                                 break;
 473                         case EEPROM_CID_SERCOMM_BELKIN:
 474                                 padapter->eeprompriv.CustomerID =
 475                                                  RT_CID_819x_Sercomm_Belkin;
 476                                 break;
 477                         case EEPROM_CID_WNC_COREGA:
 478                                 padapter->eeprompriv.CustomerID =
 479                                                  RT_CID_819x_WNC_COREGA;
 480                                 break;
 481                         case EEPROM_CID_WHQL:
 482                                 break;
 483                         case EEPROM_CID_NetCore:
 484                                 padapter->eeprompriv.CustomerID =
 485                                                  RT_CID_819x_Netcore;
 486                                 break;
 487                         case EEPROM_CID_CAMEO1:
 488                                 padapter->eeprompriv.CustomerID =
 489                                                  RT_CID_819x_CAMEO1;
 490                                 break;
 491                         case EEPROM_CID_CLEVO:
 492                                 padapter->eeprompriv.CustomerID =
 493                                                  RT_CID_819x_CLEVO;
 494                                 break;
 495                         default:
 496                                 padapter->eeprompriv.CustomerID =
 497                                                  RT_CID_DEFAULT;
 498                                 break;
 499                         }
 500                         dev_info(&udev->dev, "r8712u: CustomerID = 0x%.4x\n",
 501                                  padapter->eeprompriv.CustomerID);
 502                         /* Led mode */
 503                         switch (padapter->eeprompriv.CustomerID) {
 504                         case RT_CID_DEFAULT:
 505                         case RT_CID_819x_ALPHA:
 506                         case RT_CID_819x_CAMEO:
 507                                 padapter->ledpriv.LedStrategy = SW_LED_MODE1;
 508                                 padapter->ledpriv.bRegUseLed = true;
 509                                 break;
 510                         case RT_CID_819x_Sitecom:
 511                                 padapter->ledpriv.LedStrategy = SW_LED_MODE2;
 512                                 padapter->ledpriv.bRegUseLed = true;
 513                                 break;
 514                         case RT_CID_COREGA:
 515                         case RT_CID_819x_Senao:
 516                                 padapter->ledpriv.LedStrategy = SW_LED_MODE3;
 517                                 padapter->ledpriv.bRegUseLed = true;
 518                                 break;
 519                         case RT_CID_819x_Edimax_Belkin:
 520                                 padapter->ledpriv.LedStrategy = SW_LED_MODE4;
 521                                 padapter->ledpriv.bRegUseLed = true;
 522                                 break;
 523                         case RT_CID_819x_Sercomm_Belkin:
 524                                 padapter->ledpriv.LedStrategy = SW_LED_MODE5;
 525                                 padapter->ledpriv.bRegUseLed = true;
 526                                 break;
 527                         case RT_CID_819x_WNC_COREGA:
 528                                 padapter->ledpriv.LedStrategy = SW_LED_MODE6;
 529                                 padapter->ledpriv.bRegUseLed = true;
 530                                 break;
 531                         default:
 532                                 padapter->ledpriv.LedStrategy = SW_LED_MODE0;
 533                                 padapter->ledpriv.bRegUseLed = false;
 534                                 break;
 535                         }
 536                 } else {
 537                         AutoloadFail = false;
 538                 }
 539                 if ((!AutoloadFail) ||
 540                     ((mac[0] == 0xff) && (mac[1] == 0xff) &&
 541                      (mac[2] == 0xff) && (mac[3] == 0xff) &&
 542                      (mac[4] == 0xff) && (mac[5] == 0xff)) ||
 543                     ((mac[0] == 0x00) && (mac[1] == 0x00) &&
 544                      (mac[2] == 0x00) && (mac[3] == 0x00) &&
 545                      (mac[4] == 0x00) && (mac[5] == 0x00))) {
 546                         mac[0] = 0x00;
 547                         mac[1] = 0xe0;
 548                         mac[2] = 0x4c;
 549                         mac[3] = 0x87;
 550                         mac[4] = 0x00;
 551                         mac[5] = 0x00;
 552                 }
 553                 if (r8712_initmac) {
 554                         /* Make sure the user did not select a multicast
 555                          * address by setting bit 1 of first octet.
 556                          */
 557                         mac[0] &= 0xFE;
 558                         dev_info(&udev->dev,
 559                                 "r8712u: MAC Address from user = %pM\n", mac);
 560                 } else {
 561                         dev_info(&udev->dev,
 562                                 "r8712u: MAC Address from efuse = %pM\n", mac);
 563                 }
 564                 eth_hw_addr_set(pnetdev, mac);
 565         }
 566         /* step 6. Load the firmware asynchronously */
 567         if (rtl871x_load_fw(padapter))
 568                 goto deinit_drv_sw;
 569         init_completion(&padapter->rx_filter_ready);
 570         mutex_init(&padapter->mutex_start);
 571         return 0;
 572
 573 deinit_drv_sw:
 574         r8712_free_drv_sw(padapter);
 575 dvobj_deinit:
 576         padapter->dvobj_deinit(padapter);
 577 free_netdev:
 578         free_netdev(pnetdev);
 579 put_dev:
 580         usb_put_dev(udev);
 581         usb_set_intfdata(pusb_intf, NULL);
 582         return -ENODEV;
 583 }
 584
 585 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove()
 586  * => how to recognize both
 587  */
 588 static void r871xu_dev_remove(struct usb_interface *pusb_intf)
 589 {
 590         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
 591         struct usb_device *udev = interface_to_usbdev(pusb_intf);
 592         struct _adapter *padapter = netdev_priv(pnetdev);
 593
 594         /* never exit with a firmware callback pending */
 595         wait_for_completion(&padapter->rtl8712_fw_ready);
 596         if (pnetdev->reg_state != NETREG_UNINITIALIZED)
 597                 unregister_netdev(pnetdev); /* will call netdev_close() */
 598         usb_set_intfdata(pusb_intf, NULL);
 599         release_firmware(padapter->fw);
 600         if (drvpriv.drv_registered)
 601                 padapter->surprise_removed = true;
 602         r8712_flush_rwctrl_works(padapter);
 603         r8712_flush_led_works(padapter);
 604         udelay(1);
 605         /* Stop driver mlme relation timer */
 606         r8712_stop_drv_timers(padapter);
 607         r871x_dev_unload(padapter);
 608         if (padapter->dvobj_deinit)
 609                 padapter->dvobj_deinit(padapter);
 610         r8712_free_drv_sw(padapter);
 611         free_netdev(pnetdev);
 612
 613         /* decrease the reference count of the usb device structure
 614          * when disconnect
 615          */
 616         usb_put_dev(udev);
 617
 618         /* If we didn't unplug usb dongle and remove/insert module, driver
 619          * fails on sitesurvey for the first time when device is up.
 620          * Reset usb port for sitesurvey fail issue.
 621          */
 622         if (udev->state != USB_STATE_NOTATTACHED)
 623                 usb_reset_device(udev);
 624 }
 625
 626 static int __init r8712u_drv_entry(void)
 627 {
 628         drvpriv.drv_registered = true;
 629         return usb_register(&drvpriv.r871xu_drv);
 630 }
 631
 632 static void __exit r8712u_drv_halt(void)
 633 {
 634         drvpriv.drv_registered = false;
 635         usb_deregister(&drvpriv.r871xu_drv);
 636 }
 637
 638 module_init(r8712u_drv_entry);
 639 module_exit(r8712u_drv_halt);