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
  40 /* RTL8188SU */
  41         /* Realtek */
  42         {USB_DEVICE(0x0BDA, 0x8171)},
  43         {USB_DEVICE(0x0bda, 0x8173)},
  44         {USB_DEVICE(0x0bda, 0x8712)},
  45         {USB_DEVICE(0x0bda, 0x8713)},
  46         {USB_DEVICE(0x0bda, 0xC512)},
  47         /* Abocom */
  48         {USB_DEVICE(0x07B8, 0x8188)},
  49         /* ASUS */
  50         {USB_DEVICE(0x0B05, 0x1786)},
  51         {USB_DEVICE(0x0B05, 0x1791)}, /* 11n mode disable */
  52         /* Belkin */
  53         {USB_DEVICE(0x050D, 0x945A)},
  54         /* ISY IWL - Belkin clone */
  55         {USB_DEVICE(0x050D, 0x11F1)},
  56         /* Corega */
  57         {USB_DEVICE(0x07AA, 0x0047)},
  58         /* D-Link */
  59         {USB_DEVICE(0x2001, 0x3306)},
  60         {USB_DEVICE(0x07D1, 0x3306)}, /* 11n mode disable */
  61         /* Edimax */
  62         {USB_DEVICE(0x7392, 0x7611)},
  63         /* EnGenius */
  64         {USB_DEVICE(0x1740, 0x9603)},
  65         /* Hawking */
  66         {USB_DEVICE(0x0E66, 0x0016)},
  67         /* Hercules */
  68         {USB_DEVICE(0x06F8, 0xE034)},
  69         {USB_DEVICE(0x06F8, 0xE032)},
  70         /* Logitec */
  71         {USB_DEVICE(0x0789, 0x0167)},
  72         /* PCI */
  73         {USB_DEVICE(0x2019, 0xAB28)},
  74         {USB_DEVICE(0x2019, 0xED16)},
  75         /* Sitecom */
  76         {USB_DEVICE(0x0DF6, 0x0057)},
  77         {USB_DEVICE(0x0DF6, 0x0045)},
  78         {USB_DEVICE(0x0DF6, 0x0059)}, /* 11n mode disable */
  79         {USB_DEVICE(0x0DF6, 0x004B)},
  80         {USB_DEVICE(0x0DF6, 0x005B)},
  81         {USB_DEVICE(0x0DF6, 0x005D)},
  82         {USB_DEVICE(0x0DF6, 0x0063)},
  83         /* Sweex */
  84         {USB_DEVICE(0x177F, 0x0154)},
  85         /* Thinkware */
  86         {USB_DEVICE(0x0BDA, 0x5077)},
  87         /* Toshiba */
  88         {USB_DEVICE(0x1690, 0x0752)},
  89         /* - */
  90         {USB_DEVICE(0x20F4, 0x646B)},
  91         {USB_DEVICE(0x083A, 0xC512)},
  92         {USB_DEVICE(0x25D4, 0x4CA1)},
  93         {USB_DEVICE(0x25D4, 0x4CAB)},
  94
  95 /* RTL8191SU */
  96         /* Realtek */
  97         {USB_DEVICE(0x0BDA, 0x8172)},
  98         {USB_DEVICE(0x0BDA, 0x8192)},
  99         /* Amigo */
 100         {USB_DEVICE(0x0EB0, 0x9061)},
 101         /* ASUS/EKB */
 102         {USB_DEVICE(0x13D3, 0x3323)},
 103         {USB_DEVICE(0x13D3, 0x3311)}, /* 11n mode disable */
 104         {USB_DEVICE(0x13D3, 0x3342)},
 105         /* ASUS/EKBLenovo */
 106         {USB_DEVICE(0x13D3, 0x3333)},
 107         {USB_DEVICE(0x13D3, 0x3334)},
 108         {USB_DEVICE(0x13D3, 0x3335)}, /* 11n mode disable */
 109         {USB_DEVICE(0x13D3, 0x3336)}, /* 11n mode disable */
 110         /* ASUS/Media BOX */
 111         {USB_DEVICE(0x13D3, 0x3309)},
 112         /* Belkin */
 113         {USB_DEVICE(0x050D, 0x815F)},
 114         /* D-Link */
 115         {USB_DEVICE(0x07D1, 0x3302)},
 116         {USB_DEVICE(0x07D1, 0x3300)},
 117         {USB_DEVICE(0x07D1, 0x3303)},
 118         /* Edimax */
 119         {USB_DEVICE(0x7392, 0x7612)},
 120         /* EnGenius */
 121         {USB_DEVICE(0x1740, 0x9605)},
 122         /* Guillemot */
 123         {USB_DEVICE(0x06F8, 0xE031)},
 124         /* Hawking */
 125         {USB_DEVICE(0x0E66, 0x0015)},
 126         /* Mediao */
 127         {USB_DEVICE(0x13D3, 0x3306)},
 128         /* PCI */
 129         {USB_DEVICE(0x2019, 0xED18)},
 130         {USB_DEVICE(0x2019, 0x4901)},
 131         /* Sitecom */
 132         {USB_DEVICE(0x0DF6, 0x0058)},
 133         {USB_DEVICE(0x0DF6, 0x0049)},
 134         {USB_DEVICE(0x0DF6, 0x004C)},
 135         {USB_DEVICE(0x0DF6, 0x006C)},
 136         {USB_DEVICE(0x0DF6, 0x0064)},
 137         /* Skyworth */
 138         {USB_DEVICE(0x14b2, 0x3300)},
 139         {USB_DEVICE(0x14b2, 0x3301)},
 140         {USB_DEVICE(0x14B2, 0x3302)},
 141         /* - */
 142         {USB_DEVICE(0x04F2, 0xAFF2)},
 143         {USB_DEVICE(0x04F2, 0xAFF5)},
 144         {USB_DEVICE(0x04F2, 0xAFF6)},
 145         {USB_DEVICE(0x13D3, 0x3339)},
 146         {USB_DEVICE(0x13D3, 0x3340)}, /* 11n mode disable */
 147         {USB_DEVICE(0x13D3, 0x3341)}, /* 11n mode disable */
 148         {USB_DEVICE(0x13D3, 0x3310)},
 149         {USB_DEVICE(0x13D3, 0x3325)},
 150
 151 /* RTL8192SU */
 152         /* Realtek */
 153         {USB_DEVICE(0x0BDA, 0x8174)},
 154         /* Belkin */
 155         {USB_DEVICE(0x050D, 0x845A)},
 156         /* Corega */
 157         {USB_DEVICE(0x07AA, 0x0051)},
 158         /* Edimax */
 159         {USB_DEVICE(0x7392, 0x7622)},
 160         /* NEC */
 161         {USB_DEVICE(0x0409, 0x02B6)},
 162         {}
 163 };
 164
 165 MODULE_DEVICE_TABLE(usb, rtl871x_usb_id_tbl);
 166
 167 static struct specific_device_id specific_device_id_tbl[] = {
 168         {.idVendor = 0x0b05, .idProduct = 0x1791,
 169                  .flags = SPEC_DEV_ID_DISABLE_HT},
 170         {.idVendor = 0x0df6, .idProduct = 0x0059,
 171                  .flags = SPEC_DEV_ID_DISABLE_HT},
 172         {.idVendor = 0x13d3, .idProduct = 0x3306,
 173                  .flags = SPEC_DEV_ID_DISABLE_HT},
 174         {.idVendor = 0x13D3, .idProduct = 0x3311,
 175                  .flags = SPEC_DEV_ID_DISABLE_HT},
 176         {.idVendor = 0x13d3, .idProduct = 0x3335,
 177                  .flags = SPEC_DEV_ID_DISABLE_HT},
 178         {.idVendor = 0x13d3, .idProduct = 0x3336,
 179                  .flags = SPEC_DEV_ID_DISABLE_HT},
 180         {.idVendor = 0x13d3, .idProduct = 0x3340,
 181                  .flags = SPEC_DEV_ID_DISABLE_HT},
 182         {.idVendor = 0x13d3, .idProduct = 0x3341,
 183                  .flags = SPEC_DEV_ID_DISABLE_HT},
 184         {}
 185 };
 186
 187 struct drv_priv {
 188         struct usb_driver r871xu_drv;
 189         int drv_registered;
 190 };
 191
 192 #ifdef CONFIG_PM
 193 static int r871x_suspend(struct usb_interface *pusb_intf, pm_message_t state)
 194 {
 195         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
 196         struct _adapter *padapter = netdev_priv(pnetdev);
 197
 198         netdev_info(pnetdev, "Suspending...\n");
 199         padapter->bSuspended = true;
 200         rtl871x_intf_stop(padapter);
 201         if (pnetdev->netdev_ops->ndo_stop)
 202                 pnetdev->netdev_ops->ndo_stop(pnetdev);
 203         mdelay(10);
 204         netif_device_detach(pnetdev);
 205         return 0;
 206 }
 207
 208 static void rtl871x_intf_resume(struct _adapter *padapter)
 209 {
 210         if (padapter->dvobjpriv.inirp_init)
 211                 padapter->dvobjpriv.inirp_init(padapter);
 212 }
 213
 214 static int r871x_resume(struct usb_interface *pusb_intf)
 215 {
 216         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
 217         struct _adapter *padapter = netdev_priv(pnetdev);
 218
 219         netdev_info(pnetdev,  "Resuming...\n");
 220         netif_device_attach(pnetdev);
 221         if (pnetdev->netdev_ops->ndo_open)
 222                 pnetdev->netdev_ops->ndo_open(pnetdev);
 223         padapter->bSuspended = false;
 224         rtl871x_intf_resume(padapter);
 225         return 0;
 226 }
 227 #endif
 228
 229 static struct drv_priv drvpriv = {
 230         .r871xu_drv.name = "r8712u",
 231         .r871xu_drv.id_table = rtl871x_usb_id_tbl,
 232         .r871xu_drv.probe = r871xu_drv_init,
 233         .r871xu_drv.disconnect = r871xu_dev_remove,
 234 #ifdef CONFIG_PM
 235         .r871xu_drv.suspend = r871x_suspend,
 236         .r871xu_drv.resume = r871x_resume,
 237 #endif
 238 };
 239
 240 static uint r8712_usb_dvobj_init(struct _adapter *padapter)
 241 {
 242         uint    status = _SUCCESS;
 243         struct  usb_host_interface              *phost_iface;
 244         struct  usb_interface_descriptor        *piface_desc;
 245         struct dvobj_priv *pdvobjpriv = &padapter->dvobjpriv;
 246         struct usb_device *pusbd = pdvobjpriv->pusbdev;
 247
 248         pdvobjpriv->padapter = padapter;
 249         padapter->EepromAddressSize = 6;
 250         phost_iface = &pintf->altsetting[0];
 251         piface_desc = &phost_iface->desc;
 252         pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;
 253         if (pusbd->speed == USB_SPEED_HIGH) {
 254                 pdvobjpriv->ishighspeed = true;
 255                 dev_info(&pusbd->dev, "r8712u: USB_SPEED_HIGH with %d endpoints\n",
 256                          pdvobjpriv->nr_endpoint);
 257         } else {
 258                 pdvobjpriv->ishighspeed = false;
 259                 dev_info(&pusbd->dev, "r8712u: USB_SPEED_LOW with %d endpoints\n",
 260                          pdvobjpriv->nr_endpoint);
 261         }
 262         if ((r8712_alloc_io_queue(padapter)) == _FAIL)
 263                 status = _FAIL;
 264         return status;
 265 }
 266
 267 static void r8712_usb_dvobj_deinit(struct _adapter *padapter)
 268 {
 269 }
 270
 271 void rtl871x_intf_stop(struct _adapter *padapter)
 272 {
 273         /*disable_hw_interrupt*/
 274         if (!padapter->bSurpriseRemoved) {
 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->bDriverStopped = true;
 293
 294                 /*s3.*/
 295                 rtl871x_intf_stop(padapter);
 296
 297                 /*s4.*/
 298                 r8712_stop_drv_threads(padapter);
 299
 300                 /*s5.*/
 301                 if (!padapter->bSurpriseRemoved) {
 302                         padapter->hw_init_completed = false;
 303                         rtl8712_hal_deinit(padapter);
 304                 }
 305
 306                 /*s6.*/
 307                 if (padapter->dvobj_deinit)
 308                         padapter->dvobj_deinit(padapter);
 309                 padapter->bup = false;
 310         }
 311 }
 312
 313 static void disable_ht_for_spec_devid(const struct usb_device_id *pdid,
 314                                       struct _adapter *padapter)
 315 {
 316         u16 vid, pid;
 317         u32 flags;
 318         int i;
 319         int num = ARRAY_SIZE(specific_device_id_tbl);
 320
 321         for (i = 0; i < num; i++) {
 322                 vid = specific_device_id_tbl[i].idVendor;
 323                 pid = specific_device_id_tbl[i].idProduct;
 324                 flags = specific_device_id_tbl[i].flags;
 325
 326                 if ((pdid->idVendor == vid) && (pdid->idProduct == pid) &&
 327                     (flags & SPEC_DEV_ID_DISABLE_HT)) {
 328                         padapter->registrypriv.ht_enable = 0;
 329                         padapter->registrypriv.cbw40_enable = 0;
 330                         padapter->registrypriv.ampdu_enable = 0;
 331                 }
 332         }
 333 }
 334
 335 static const struct device_type wlan_type = {
 336         .name = "wlan",
 337 };
 338
 339 /*
 340  * drv_init() - a device potentially for us
 341  *
 342  * notes: drv_init() is called when the bus driver has located a card for us
 343  * to support. We accept the new device by returning 0.
 344  */
 345 static int r871xu_drv_init(struct usb_interface *pusb_intf,
 346                            const struct usb_device_id *pdid)
 347 {
 348         uint status;
 349         struct _adapter *padapter = NULL;
 350         struct dvobj_priv *pdvobjpriv;
 351         struct net_device *pnetdev;
 352         struct usb_device *udev;
 353
 354         /* In this probe function, O.S. will provide the usb interface pointer
 355          * to driver. We have to increase the reference count of the usb device
 356          * structure by using the usb_get_dev function.
 357          */
 358         udev = interface_to_usbdev(pusb_intf);
 359         usb_get_dev(udev);
 360         pintf = pusb_intf;
 361         /* step 1. */
 362         pnetdev = r8712_init_netdev();
 363         if (!pnetdev)
 364                 goto error;
 365         padapter = netdev_priv(pnetdev);
 366         disable_ht_for_spec_devid(pdid, padapter);
 367         pdvobjpriv = &padapter->dvobjpriv;
 368         pdvobjpriv->padapter = padapter;
 369         padapter->dvobjpriv.pusbdev = udev;
 370         padapter->pusb_intf = pusb_intf;
 371         usb_set_intfdata(pusb_intf, pnetdev);
 372         SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
 373         pnetdev->dev.type = &wlan_type;
 374         /* step 2. */
 375         padapter->dvobj_init = r8712_usb_dvobj_init;
 376         padapter->dvobj_deinit = r8712_usb_dvobj_deinit;
 377         padapter->halpriv.hal_bus_init = r8712_usb_hal_bus_init;
 378         padapter->dvobjpriv.inirp_init = r8712_usb_inirp_init;
 379         padapter->dvobjpriv.inirp_deinit = r8712_usb_inirp_deinit;
 380         /* step 3.
 381          * initialize the dvobj_priv
 382          */
 383         if (!padapter->dvobj_init) {
 384                 goto error;
 385         } else {
 386                 status = padapter->dvobj_init(padapter);
 387                 if (status != _SUCCESS)
 388                         goto error;
 389         }
 390         /* step 4. */
 391         status = r8712_init_drv_sw(padapter);
 392         if (status == _FAIL)
 393                 goto error;
 394         /* step 5. read efuse/eeprom data and get mac_addr */
 395         {
 396                 int i, offset;
 397                 u8 mac[6];
 398                 u8 tmpU1b, AutoloadFail, eeprom_CustomerID;
 399                 u8 *pdata = padapter->eeprompriv.efuse_eeprom_data;
 400
 401                 tmpU1b = r8712_read8(padapter, EE_9346CR);/*CR9346*/
 402
 403                 /* To check system boot selection.*/
 404                 dev_info(&udev->dev, "r8712u: Boot from %s: Autoload %s\n",
 405                          (tmpU1b & _9356SEL) ? "EEPROM" : "EFUSE",
 406                          (tmpU1b & _EEPROM_EN) ? "OK" : "Failed");
 407
 408                 /* To check autoload success or not.*/
 409                 if (tmpU1b & _EEPROM_EN) {
 410                         AutoloadFail = true;
 411                         /* The following operations prevent Efuse leakage by
 412                          * turning on 2.5V.
 413                          */
 414                         tmpU1b = r8712_read8(padapter, EFUSE_TEST + 3);
 415                         r8712_write8(padapter, EFUSE_TEST + 3, tmpU1b | 0x80);
 416                         msleep(20);
 417                         r8712_write8(padapter, EFUSE_TEST + 3,
 418                                      (tmpU1b & (~BIT(7))));
 419
 420                         /* Retrieve Chip version.
 421                          * Recognize IC version by Reg0x4 BIT15.
 422                          */
 423                         tmpU1b = (u8)((r8712_read32(padapter, PMC_FSM) >> 15) &
 424                                                     0x1F);
 425                         if (tmpU1b == 0x3)
 426                                 padapter->registrypriv.chip_version =
 427                                      RTL8712_3rdCUT;
 428                         else
 429                                 padapter->registrypriv.chip_version =
 430                                      (tmpU1b >> 1) + 1;
 431                         switch (padapter->registrypriv.chip_version) {
 432                         case RTL8712_1stCUT:
 433                         case RTL8712_2ndCUT:
 434                         case RTL8712_3rdCUT:
 435                                 break;
 436                         default:
 437                                 padapter->registrypriv.chip_version =
 438                                      RTL8712_2ndCUT;
 439                                 break;
 440                         }
 441
 442                         for (i = 0, offset = 0; i < 128; i += 8, offset++)
 443                                 r8712_efuse_pg_packet_read(padapter, offset,
 444                                                      &pdata[i]);
 445
 446                         if (!r8712_initmac || !mac_pton(r8712_initmac, mac)) {
 447                                 /* Use the mac address stored in the Efuse
 448                                  * offset = 0x12 for usb in efuse
 449                                  */
 450                                 ether_addr_copy(mac, &pdata[0x12]);
 451                         }
 452                         eeprom_CustomerID = pdata[0x52];
 453                         switch (eeprom_CustomerID) {
 454                         case EEPROM_CID_ALPHA:
 455                                 padapter->eeprompriv.CustomerID =
 456                                                  RT_CID_819x_ALPHA;
 457                                 break;
 458                         case EEPROM_CID_CAMEO:
 459                                 padapter->eeprompriv.CustomerID =
 460                                                  RT_CID_819x_CAMEO;
 461                                 break;
 462                         case EEPROM_CID_SITECOM:
 463                                 padapter->eeprompriv.CustomerID =
 464                                                  RT_CID_819x_Sitecom;
 465                                 break;
 466                         case EEPROM_CID_COREGA:
 467                                 padapter->eeprompriv.CustomerID =
 468                                                  RT_CID_COREGA;
 469                                 break;
 470                         case EEPROM_CID_Senao:
 471                                 padapter->eeprompriv.CustomerID =
 472                                                  RT_CID_819x_Senao;
 473                                 break;
 474                         case EEPROM_CID_EDIMAX_BELKIN:
 475                                 padapter->eeprompriv.CustomerID =
 476                                                  RT_CID_819x_Edimax_Belkin;
 477                                 break;
 478                         case EEPROM_CID_SERCOMM_BELKIN:
 479                                 padapter->eeprompriv.CustomerID =
 480                                                  RT_CID_819x_Sercomm_Belkin;
 481                                 break;
 482                         case EEPROM_CID_WNC_COREGA:
 483                                 padapter->eeprompriv.CustomerID =
 484                                                  RT_CID_819x_WNC_COREGA;
 485                                 break;
 486                         case EEPROM_CID_WHQL:
 487                                 break;
 488                         case EEPROM_CID_NetCore:
 489                                 padapter->eeprompriv.CustomerID =
 490                                                  RT_CID_819x_Netcore;
 491                                 break;
 492                         case EEPROM_CID_CAMEO1:
 493                                 padapter->eeprompriv.CustomerID =
 494                                                  RT_CID_819x_CAMEO1;
 495                                 break;
 496                         case EEPROM_CID_CLEVO:
 497                                 padapter->eeprompriv.CustomerID =
 498                                                  RT_CID_819x_CLEVO;
 499                                 break;
 500                         default:
 501                                 padapter->eeprompriv.CustomerID =
 502                                                  RT_CID_DEFAULT;
 503                                 break;
 504                         }
 505                         dev_info(&udev->dev, "r8712u: CustomerID = 0x%.4x\n",
 506                                  padapter->eeprompriv.CustomerID);
 507                         /* Led mode */
 508                         switch (padapter->eeprompriv.CustomerID) {
 509                         case RT_CID_DEFAULT:
 510                         case RT_CID_819x_ALPHA:
 511                         case RT_CID_819x_CAMEO:
 512                                 padapter->ledpriv.LedStrategy = SW_LED_MODE1;
 513                                 padapter->ledpriv.bRegUseLed = true;
 514                                 break;
 515                         case RT_CID_819x_Sitecom:
 516                                 padapter->ledpriv.LedStrategy = SW_LED_MODE2;
 517                                 padapter->ledpriv.bRegUseLed = true;
 518                                 break;
 519                         case RT_CID_COREGA:
 520                         case RT_CID_819x_Senao:
 521                                 padapter->ledpriv.LedStrategy = SW_LED_MODE3;
 522                                 padapter->ledpriv.bRegUseLed = true;
 523                                 break;
 524                         case RT_CID_819x_Edimax_Belkin:
 525                                 padapter->ledpriv.LedStrategy = SW_LED_MODE4;
 526                                 padapter->ledpriv.bRegUseLed = true;
 527                                 break;
 528                         case RT_CID_819x_Sercomm_Belkin:
 529                                 padapter->ledpriv.LedStrategy = SW_LED_MODE5;
 530                                 padapter->ledpriv.bRegUseLed = true;
 531                                 break;
 532                         case RT_CID_819x_WNC_COREGA:
 533                                 padapter->ledpriv.LedStrategy = SW_LED_MODE6;
 534                                 padapter->ledpriv.bRegUseLed = true;
 535                                 break;
 536                         default:
 537                                 padapter->ledpriv.LedStrategy = SW_LED_MODE0;
 538                                 padapter->ledpriv.bRegUseLed = false;
 539                                 break;
 540                         }
 541                 } else {
 542                         AutoloadFail = false;
 543                 }
 544                 if (((mac[0] == 0xff) && (mac[1] == 0xff) &&
 545                      (mac[2] == 0xff) && (mac[3] == 0xff) &&
 546                      (mac[4] == 0xff) && (mac[5] == 0xff)) ||
 547                     ((mac[0] == 0x00) && (mac[1] == 0x00) &&
 548                      (mac[2] == 0x00) && (mac[3] == 0x00) &&
 549                      (mac[4] == 0x00) && (mac[5] == 0x00)) ||
 550                      (!AutoloadFail)) {
 551                         mac[0] = 0x00;
 552                         mac[1] = 0xe0;
 553                         mac[2] = 0x4c;
 554                         mac[3] = 0x87;
 555                         mac[4] = 0x00;
 556                         mac[5] = 0x00;
 557                 }
 558                 if (r8712_initmac) {
 559                         /* Make sure the user did not select a multicast
 560                          * address by setting bit 1 of first octet.
 561                          */
 562                         mac[0] &= 0xFE;
 563                         dev_info(&udev->dev,
 564                                 "r8712u: MAC Address from user = %pM\n", mac);
 565                 } else {
 566                         dev_info(&udev->dev,
 567                                 "r8712u: MAC Address from efuse = %pM\n", mac);
 568                 }
 569                 ether_addr_copy(pnetdev->dev_addr, mac);
 570         }
 571         /* step 6. Load the firmware asynchronously */
 572         if (rtl871x_load_fw(padapter))
 573                 goto error;
 574         spin_lock_init(&padapter->lockRxFF0Filter);
 575         mutex_init(&padapter->mutex_start);
 576         return 0;
 577 error:
 578         usb_put_dev(udev);
 579         usb_set_intfdata(pusb_intf, NULL);
 580         if (padapter && padapter->dvobj_deinit != NULL)
 581                 padapter->dvobj_deinit(padapter);
 582         if (pnetdev)
 583                 free_netdev(pnetdev);
 584         return -ENODEV;
 585 }
 586
 587 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove()
 588  * => how to recognize both
 589  */
 590 static void r871xu_dev_remove(struct usb_interface *pusb_intf)
 591 {
 592         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
 593         struct usb_device *udev = interface_to_usbdev(pusb_intf);
 594
 595         if (pnetdev) {
 596                 struct _adapter *padapter = netdev_priv(pnetdev);
 597
 598                 usb_set_intfdata(pusb_intf, NULL);
 599                 release_firmware(padapter->fw);
 600                 /* never exit with a firmware callback pending */
 601                 wait_for_completion(&padapter->rtl8712_fw_ready);
 602                 if (drvpriv.drv_registered)
 603                         padapter->bSurpriseRemoved = true;
 604                 unregister_netdev(pnetdev); /* will call netdev_close() */
 605                 flush_scheduled_work();
 606                 udelay(1);
 607                 /* Stop driver mlme relation timer */
 608                 r8712_stop_drv_timers(padapter);
 609                 r871x_dev_unload(padapter);
 610                 r8712_free_drv_sw(padapter);
 611
 612                 /* decrease the reference count of the usb device structure
 613                  * when disconnect
 614                  */
 615                 usb_put_dev(udev);
 616         }
 617         /* If we didn't unplug usb dongle and remove/insert module, driver
 618          * fails on sitesurvey for the first time when device is up.
 619          * Reset usb port for sitesurvey fail issue.
 620          */
 621         if (udev->state != USB_STATE_NOTATTACHED)
 622                 usb_reset_device(udev);
 623 }
 624
 625 static int __init r8712u_drv_entry(void)
 626 {
 627         drvpriv.drv_registered = true;
 628         return usb_register(&drvpriv.r871xu_drv);
 629 }
 630
 631 static void __exit r8712u_drv_halt(void)
 632 {
 633         drvpriv.drv_registered = false;
 634         usb_deregister(&drvpriv.r871xu_drv);
 635 }
 636
 637 module_init(r8712u_drv_entry);
 638 module_exit(r8712u_drv_halt);