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1 /******************************************************************************
2  * usb_intf.c
3  *
4  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
5  * Linux device driver for RTL8192SU
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of version 2 of the GNU General Public License as
9  * published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * this program; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
19  *
20  * Modifications for inclusion into the Linux staging tree are
21  * Copyright(c) 2010 Larry Finger. All rights reserved.
22  *
23  * Contact information:
24  * WLAN FAE <wlanfae@realtek.com>
25  * Larry Finger <Larry.Finger@lwfinger.net>
26  *
27  ******************************************************************************/
28
29 #define _HCI_INTF_C_
30
31 #include <linux/usb.h>
32 #include <linux/module.h>
33 #include <linux/firmware.h>
34
35 #include "osdep_service.h"
36 #include "drv_types.h"
37 #include "recv_osdep.h"
38 #include "xmit_osdep.h"
39 #include "rtl8712_efuse.h"
40 #include "usb_vendor_req.h"
41 #include "usb_ops.h"
42 #include "usb_osintf.h"
43
44 #define DRVER  "v7_0.20100831"
45
46 static struct usb_interface *pintf;
47
48 static int r871xu_drv_init(struct usb_interface *pusb_intf,
49                            const struct usb_device_id *pdid);
50
51 static void r871xu_dev_remove(struct usb_interface *pusb_intf);
52
53 static struct usb_device_id rtl871x_usb_id_tbl[] = {
54
55 /* RTL8188SU */
56         /* Realtek */
57         {USB_DEVICE(0x0BDA, 0x8171)},
58         {USB_DEVICE(0x0bda, 0x8173)},
59         {USB_DEVICE(0x0bda, 0x8712)},
60         {USB_DEVICE(0x0bda, 0x8713)},
61         {USB_DEVICE(0x0bda, 0xC512)},
62         /* Abocom */
63         {USB_DEVICE(0x07B8, 0x8188)},
64         /* ASUS */
65         {USB_DEVICE(0x0B05, 0x1786)},
66         {USB_DEVICE(0x0B05, 0x1791)}, /* 11n mode disable */
67         /* Belkin */
68         {USB_DEVICE(0x050D, 0x945A)},
69         /* Corega */
70         {USB_DEVICE(0x07AA, 0x0047)},
71         /* D-Link */
72         {USB_DEVICE(0x2001, 0x3306)},
73         {USB_DEVICE(0x07D1, 0x3306)}, /* 11n mode disable */
74         /* Edimax */
75         {USB_DEVICE(0x7392, 0x7611)},
76         /* EnGenius */
77         {USB_DEVICE(0x1740, 0x9603)},
78         /* Hawking */
79         {USB_DEVICE(0x0E66, 0x0016)},
80         /* Hercules */
81         {USB_DEVICE(0x06F8, 0xE034)},
82         {USB_DEVICE(0x06F8, 0xE032)},
83         /* Logitec */
84         {USB_DEVICE(0x0789, 0x0167)},
85         /* PCI */
86         {USB_DEVICE(0x2019, 0xAB28)},
87         {USB_DEVICE(0x2019, 0xED16)},
88         /* Sitecom */
89         {USB_DEVICE(0x0DF6, 0x0057)},
90         {USB_DEVICE(0x0DF6, 0x0045)},
91         {USB_DEVICE(0x0DF6, 0x0059)}, /* 11n mode disable */
92         {USB_DEVICE(0x0DF6, 0x004B)},
93         {USB_DEVICE(0x0DF6, 0x005B)},
94         {USB_DEVICE(0x0DF6, 0x005D)},
95         {USB_DEVICE(0x0DF6, 0x0063)},
96         /* Sweex */
97         {USB_DEVICE(0x177F, 0x0154)},
98         /* Thinkware */
99         {USB_DEVICE(0x0BDA, 0x5077)},
100         /* Toshiba */
101         {USB_DEVICE(0x1690, 0x0752)},
102         /* - */
103         {USB_DEVICE(0x20F4, 0x646B)},
104         {USB_DEVICE(0x083A, 0xC512)},
105
106 /* RTL8191SU */
107         /* Realtek */
108         {USB_DEVICE(0x0BDA, 0x8172)},
109         {USB_DEVICE(0x0BDA, 0x8192)},
110         /* Amigo */
111         {USB_DEVICE(0x0EB0, 0x9061)},
112         /* ASUS/EKB */
113         {USB_DEVICE(0x13D3, 0x3323)},
114         {USB_DEVICE(0x13D3, 0x3311)}, /* 11n mode disable */
115         {USB_DEVICE(0x13D3, 0x3342)},
116         /* ASUS/EKBLenovo */
117         {USB_DEVICE(0x13D3, 0x3333)},
118         {USB_DEVICE(0x13D3, 0x3334)},
119         {USB_DEVICE(0x13D3, 0x3335)}, /* 11n mode disable */
120         {USB_DEVICE(0x13D3, 0x3336)}, /* 11n mode disable */
121         /* ASUS/Media BOX */
122         {USB_DEVICE(0x13D3, 0x3309)},
123         /* Belkin */
124         {USB_DEVICE(0x050D, 0x815F)},
125         /* D-Link */
126         {USB_DEVICE(0x07D1, 0x3302)},
127         {USB_DEVICE(0x07D1, 0x3300)},
128         {USB_DEVICE(0x07D1, 0x3303)},
129         /* Edimax */
130         {USB_DEVICE(0x7392, 0x7612)},
131         /* EnGenius */
132         {USB_DEVICE(0x1740, 0x9605)},
133         /* Guillemot */
134         {USB_DEVICE(0x06F8, 0xE031)},
135         /* Hawking */
136         {USB_DEVICE(0x0E66, 0x0015)},
137         /* Mediao */
138         {USB_DEVICE(0x13D3, 0x3306)},
139         /* PCI */
140         {USB_DEVICE(0x2019, 0xED18)},
141         {USB_DEVICE(0x2019, 0x4901)},
142         /* Sitecom */
143         {USB_DEVICE(0x0DF6, 0x0058)},
144         {USB_DEVICE(0x0DF6, 0x0049)},
145         {USB_DEVICE(0x0DF6, 0x004C)},
146         {USB_DEVICE(0x0DF6, 0x0064)},
147         /* Skyworth */
148         {USB_DEVICE(0x14b2, 0x3300)},
149         {USB_DEVICE(0x14b2, 0x3301)},
150         {USB_DEVICE(0x14B2, 0x3302)},
151         /* - */
152         {USB_DEVICE(0x04F2, 0xAFF2)},
153         {USB_DEVICE(0x04F2, 0xAFF5)},
154         {USB_DEVICE(0x04F2, 0xAFF6)},
155         {USB_DEVICE(0x13D3, 0x3339)},
156         {USB_DEVICE(0x13D3, 0x3340)}, /* 11n mode disable */
157         {USB_DEVICE(0x13D3, 0x3341)}, /* 11n mode disable */
158         {USB_DEVICE(0x13D3, 0x3310)},
159         {USB_DEVICE(0x13D3, 0x3325)},
160
161 /* RTL8192SU */
162         /* Realtek */
163         {USB_DEVICE(0x0BDA, 0x8174)},
164         /* Belkin */
165         {USB_DEVICE(0x050D, 0x845A)},
166         /* Corega */
167         {USB_DEVICE(0x07AA, 0x0051)},
168         /* Edimax */
169         {USB_DEVICE(0x7392, 0x7622)},
170         /* NEC */
171         {USB_DEVICE(0x0409, 0x02B6)},
172         {}
173 };
174
175 MODULE_DEVICE_TABLE(usb, rtl871x_usb_id_tbl);
176
177 static struct specific_device_id specific_device_id_tbl[] = {
178         {.idVendor = 0x0b05, .idProduct = 0x1791,
179                  .flags = SPEC_DEV_ID_DISABLE_HT},
180         {.idVendor = 0x0df6, .idProduct = 0x0059,
181                  .flags = SPEC_DEV_ID_DISABLE_HT},
182         {.idVendor = 0x13d3, .idProduct = 0x3306,
183                  .flags = SPEC_DEV_ID_DISABLE_HT},
184         {.idVendor = 0x13D3, .idProduct = 0x3311,
185                  .flags = SPEC_DEV_ID_DISABLE_HT},
186         {.idVendor = 0x13d3, .idProduct = 0x3335,
187                  .flags = SPEC_DEV_ID_DISABLE_HT},
188         {.idVendor = 0x13d3, .idProduct = 0x3336,
189                  .flags = SPEC_DEV_ID_DISABLE_HT},
190         {.idVendor = 0x13d3, .idProduct = 0x3340,
191                  .flags = SPEC_DEV_ID_DISABLE_HT},
192         {.idVendor = 0x13d3, .idProduct = 0x3341,
193                  .flags = SPEC_DEV_ID_DISABLE_HT},
194         {}
195 };
196
197 struct drv_priv {
198         struct usb_driver r871xu_drv;
199         int drv_registered;
200 };
201
202 #ifdef CONFIG_PM
203 static int r871x_suspend(struct usb_interface *pusb_intf, pm_message_t state)
204 {
205         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
206
207         printk(KERN_INFO "r8712: suspending...\n");
208         if (!pnetdev || !netif_running(pnetdev)) {
209                 printk(KERN_INFO "r8712: unable to suspend\n");
210                 return 0;
211         }
212         if (pnetdev->netdev_ops->ndo_stop)
213                 pnetdev->netdev_ops->ndo_stop(pnetdev);
214         mdelay(10);
215         netif_device_detach(pnetdev);
216         return 0;
217 }
218
219 static int r871x_resume(struct usb_interface *pusb_intf)
220 {
221         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
222
223         printk(KERN_INFO "r8712: resuming...\n");
224         if (!pnetdev || !netif_running(pnetdev)) {
225                 printk(KERN_INFO "r8712: unable to resume\n");
226                 return 0;
227         }
228         netif_device_attach(pnetdev);
229         if (pnetdev->netdev_ops->ndo_open)
230                 pnetdev->netdev_ops->ndo_open(pnetdev);
231         return 0;
232 }
233
234 static int r871x_reset_resume(struct usb_interface *pusb_intf)
235 {
236         /* dummy routine */
237         return 0;
238 }
239
240 #endif
241
242 static struct drv_priv drvpriv = {
243         .r871xu_drv.name = "r8712u",
244         .r871xu_drv.id_table = rtl871x_usb_id_tbl,
245         .r871xu_drv.probe = r871xu_drv_init,
246         .r871xu_drv.disconnect = r871xu_dev_remove,
247 #ifdef CONFIG_PM
248         .r871xu_drv.suspend = r871x_suspend,
249         .r871xu_drv.resume = r871x_resume,
250         .r871xu_drv.reset_resume = r871x_reset_resume,
251 #endif
252 };
253
254 static uint r8712_usb_dvobj_init(struct _adapter *padapter)
255 {
256         uint    status = _SUCCESS;
257         struct  usb_device_descriptor           *pdev_desc;
258         struct  usb_host_config                 *phost_conf;
259         struct  usb_config_descriptor           *pconf_desc;
260         struct  usb_host_interface              *phost_iface;
261         struct  usb_interface_descriptor        *piface_desc;
262         struct dvobj_priv *pdvobjpriv = &padapter->dvobjpriv;
263         struct usb_device *pusbd = pdvobjpriv->pusbdev;
264
265         pdvobjpriv->padapter = padapter;
266         padapter->EepromAddressSize = 6;
267         pdev_desc = &pusbd->descriptor;
268         phost_conf = pusbd->actconfig;
269         pconf_desc = &phost_conf->desc;
270         phost_iface = &pintf->altsetting[0];
271         piface_desc = &phost_iface->desc;
272         pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;
273         if (pusbd->speed == USB_SPEED_HIGH) {
274                 pdvobjpriv->ishighspeed = true;
275                 printk(KERN_INFO "r8712u: USB_SPEED_HIGH with %d endpoints\n",
276                        pdvobjpriv->nr_endpoint);
277         } else {
278                 pdvobjpriv->ishighspeed = false;
279                 printk(KERN_INFO "r8712u: USB_SPEED_LOW with %d endpoints\n",
280                        pdvobjpriv->nr_endpoint);
281         }
282         if ((r8712_alloc_io_queue(padapter)) == _FAIL)
283                 status = _FAIL;
284         return status;
285 }
286
287 static void r8712_usb_dvobj_deinit(struct _adapter *padapter)
288 {
289 }
290
291 void rtl871x_intf_stop(struct _adapter *padapter)
292 {
293         /*disable_hw_interrupt*/
294         if (padapter->bSurpriseRemoved == false) {
295                 /*device still exists, so driver can do i/o operation
296                  * TODO: */
297         }
298
299         /* cancel in irp */
300         if (padapter->dvobjpriv.inirp_deinit != NULL)
301                 padapter->dvobjpriv.inirp_deinit(padapter);
302         /* cancel out irp */
303         r8712_usb_write_port_cancel(padapter);
304         /* TODO:cancel other irps */
305 }
306
307 void r871x_dev_unload(struct _adapter *padapter)
308 {
309         if (padapter->bup == true) {
310                 /*s1.*/
311                 padapter->bDriverStopped = true;
312
313                 /*s3.*/
314                 rtl871x_intf_stop(padapter);
315
316                 /*s4.*/
317                 r8712_stop_drv_threads(padapter);
318
319                 /*s5.*/
320                 if (padapter->bSurpriseRemoved == false) {
321                         padapter->hw_init_completed = false;
322                         rtl8712_hal_deinit(padapter);
323                 }
324
325                 /*s6.*/
326                 if (padapter->dvobj_deinit)
327                         padapter->dvobj_deinit(padapter);
328                 padapter->bup = false;
329         }
330 }
331
332 static void disable_ht_for_spec_devid(const struct usb_device_id *pdid,
333                                       struct _adapter *padapter)
334 {
335         u16 vid, pid;
336         u32 flags;
337         int i;
338         int num = sizeof(specific_device_id_tbl) /
339                   sizeof(struct specific_device_id);
340
341         for (i = 0; i < num; i++) {
342                 vid = specific_device_id_tbl[i].idVendor;
343                 pid = specific_device_id_tbl[i].idProduct;
344                 flags = specific_device_id_tbl[i].flags;
345
346                 if ((pdid->idVendor == vid) && (pdid->idProduct == pid) &&
347                     (flags&SPEC_DEV_ID_DISABLE_HT)) {
348                         padapter->registrypriv.ht_enable = 0;
349                         padapter->registrypriv.cbw40_enable = 0;
350                         padapter->registrypriv.ampdu_enable = 0;
351                 }
352         }
353 }
354
355 static u8 key_2char2num(u8 hch, u8 lch)
356 {
357         return (hex_to_bin(hch) << 4) | hex_to_bin(lch);
358 }
359
360 /*
361  * drv_init() - a device potentially for us
362  *
363  * notes: drv_init() is called when the bus driver has located a card for us
364  * to support. We accept the new device by returning 0.
365 */
366 static int r871xu_drv_init(struct usb_interface *pusb_intf,
367                            const struct usb_device_id *pdid)
368 {
369         uint status;
370         struct _adapter *padapter = NULL;
371         struct dvobj_priv *pdvobjpriv;
372         struct net_device *pnetdev;
373         struct usb_device *udev;
374
375         printk(KERN_INFO "r8712u: DriverVersion: %s\n", DRVER);
376         /* In this probe function, O.S. will provide the usb interface pointer
377          * to driver. We have to increase the reference count of the usb device
378          * structure by using the usb_get_dev function.
379          */
380         udev = interface_to_usbdev(pusb_intf);
381         usb_get_dev(udev);
382         pintf = pusb_intf;
383         /* step 1. */
384         pnetdev = r8712_init_netdev();
385         if (!pnetdev)
386                 goto error;
387         padapter = netdev_priv(pnetdev);
388         disable_ht_for_spec_devid(pdid, padapter);
389         pdvobjpriv = &padapter->dvobjpriv;
390         pdvobjpriv->padapter = padapter;
391         padapter->dvobjpriv.pusbdev = udev;
392         padapter->pusb_intf = pusb_intf;
393         usb_set_intfdata(pusb_intf, pnetdev);
394         SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
395         /* step 2. */
396         padapter->dvobj_init = &r8712_usb_dvobj_init;
397         padapter->dvobj_deinit = &r8712_usb_dvobj_deinit;
398         padapter->halpriv.hal_bus_init = &r8712_usb_hal_bus_init;
399         padapter->dvobjpriv.inirp_init = &r8712_usb_inirp_init;
400         padapter->dvobjpriv.inirp_deinit = &r8712_usb_inirp_deinit;
401         /* step 3.
402          * initialize the dvobj_priv
403          */
404         if (padapter->dvobj_init == NULL)
405                         goto error;
406         else {
407                 status = padapter->dvobj_init(padapter);
408                 if (status != _SUCCESS)
409                         goto error;
410         }
411         /* step 4. */
412         status = r8712_init_drv_sw(padapter);
413         if (status == _FAIL)
414                 goto error;
415         /* step 5. read efuse/eeprom data and get mac_addr */
416         {
417                 int i, offset;
418                 u8 mac[6];
419                 u8 tmpU1b, AutoloadFail, eeprom_CustomerID;
420                 u8 *pdata = padapter->eeprompriv.efuse_eeprom_data;
421
422                 tmpU1b = r8712_read8(padapter, EE_9346CR);/*CR9346*/
423
424                 /* To check system boot selection.*/
425                 printk(KERN_INFO "r8712u: Boot from %s: Autoload %s\n",
426                        (tmpU1b & _9356SEL) ? "EEPROM" : "EFUSE",
427                        (tmpU1b & _EEPROM_EN) ? "OK" : "Failed");
428
429                 /* To check autoload success or not.*/
430                 if (tmpU1b & _EEPROM_EN) {
431                         AutoloadFail = true;
432                         /* The following operations prevent Efuse leakage by
433                          * turning on 2.5V.
434                          */
435                         tmpU1b = r8712_read8(padapter, EFUSE_TEST+3);
436                         r8712_write8(padapter, EFUSE_TEST + 3, tmpU1b | 0x80);
437                         msleep(20);
438                         r8712_write8(padapter, EFUSE_TEST + 3,
439                                      (tmpU1b & (~BIT(7))));
440
441                         /* Retrieve Chip version.
442                          * Recognize IC version by Reg0x4 BIT15.
443                          */
444                         tmpU1b = (u8)((r8712_read32(padapter, PMC_FSM) >> 15) &
445                                                     0x1F);
446                         if (tmpU1b == 0x3)
447                                 padapter->registrypriv.chip_version =
448                                      RTL8712_3rdCUT;
449                         else
450                                 padapter->registrypriv.chip_version =
451                                      (tmpU1b >> 1) + 1;
452                         switch (padapter->registrypriv.chip_version) {
453                         case RTL8712_1stCUT:
454                         case RTL8712_2ndCUT:
455                         case RTL8712_3rdCUT:
456                                 break;
457                         default:
458                                 padapter->registrypriv.chip_version =
459                                      RTL8712_2ndCUT;
460                                 break;
461                         }
462
463                         for (i = 0, offset = 0; i < 128; i += 8, offset++)
464                                 r8712_efuse_pg_packet_read(padapter, offset,
465                                                      &pdata[i]);
466
467                         if (r8712_initmac) {
468                                 /* Users specify the mac address */
469                                 int jj, kk;
470
471                                 for (jj = 0, kk = 0; jj < ETH_ALEN;
472                                      jj++, kk += 3)
473                                         mac[jj] =
474                                            key_2char2num(r8712_initmac[kk],
475                                            r8712_initmac[kk + 1]);
476                         } else {
477                                 /* Use the mac address stored in the Efuse
478                                  * offset = 0x12 for usb in efuse
479                                  */
480                                 memcpy(mac, &pdata[0x12], ETH_ALEN);
481                         }
482                         eeprom_CustomerID = pdata[0x52];
483                         switch (eeprom_CustomerID) {
484                         case EEPROM_CID_ALPHA:
485                                 padapter->eeprompriv.CustomerID =
486                                                  RT_CID_819x_ALPHA;
487                                 break;
488                         case EEPROM_CID_CAMEO:
489                                 padapter->eeprompriv.CustomerID =
490                                                  RT_CID_819x_CAMEO;
491                                 break;
492                         case EEPROM_CID_SITECOM:
493                                 padapter->eeprompriv.CustomerID =
494                                                  RT_CID_819x_Sitecom;
495                                 break;
496                         case EEPROM_CID_COREGA:
497                                 padapter->eeprompriv.CustomerID =
498                                                  RT_CID_COREGA;
499                                 break;
500                         case EEPROM_CID_Senao:
501                                 padapter->eeprompriv.CustomerID =
502                                                  RT_CID_819x_Senao;
503                                 break;
504                         case EEPROM_CID_EDIMAX_BELKIN:
505                                 padapter->eeprompriv.CustomerID =
506                                                  RT_CID_819x_Edimax_Belkin;
507                                 break;
508                         case EEPROM_CID_SERCOMM_BELKIN:
509                                 padapter->eeprompriv.CustomerID =
510                                                  RT_CID_819x_Sercomm_Belkin;
511                                 break;
512                         case EEPROM_CID_WNC_COREGA:
513                                 padapter->eeprompriv.CustomerID =
514                                                  RT_CID_819x_WNC_COREGA;
515                                 break;
516                         case EEPROM_CID_WHQL:
517                                 break;
518                         case EEPROM_CID_NetCore:
519                                 padapter->eeprompriv.CustomerID =
520                                                  RT_CID_819x_Netcore;
521                                 break;
522                         case EEPROM_CID_CAMEO1:
523                                 padapter->eeprompriv.CustomerID =
524                                                  RT_CID_819x_CAMEO1;
525                                 break;
526                         case EEPROM_CID_CLEVO:
527                                 padapter->eeprompriv.CustomerID =
528                                                  RT_CID_819x_CLEVO;
529                                 break;
530                         default:
531                                 padapter->eeprompriv.CustomerID =
532                                                  RT_CID_DEFAULT;
533                                 break;
534                         }
535                         printk(KERN_INFO "r8712u: CustomerID = 0x%.4x\n",
536                              padapter->eeprompriv.CustomerID);
537                         /* Led mode */
538                         switch (padapter->eeprompriv.CustomerID) {
539                         case RT_CID_DEFAULT:
540                         case RT_CID_819x_ALPHA:
541                         case RT_CID_819x_CAMEO:
542                                 padapter->ledpriv.LedStrategy = SW_LED_MODE1;
543                                 padapter->ledpriv.bRegUseLed = true;
544                                 break;
545                         case RT_CID_819x_Sitecom:
546                                 padapter->ledpriv.LedStrategy = SW_LED_MODE2;
547                                 padapter->ledpriv.bRegUseLed = true;
548                                 break;
549                         case RT_CID_COREGA:
550                         case RT_CID_819x_Senao:
551                                 padapter->ledpriv.LedStrategy = SW_LED_MODE3;
552                                 padapter->ledpriv.bRegUseLed = true;
553                                 break;
554                         case RT_CID_819x_Edimax_Belkin:
555                                 padapter->ledpriv.LedStrategy = SW_LED_MODE4;
556                                 padapter->ledpriv.bRegUseLed = true;
557                                 break;
558                         case RT_CID_819x_Sercomm_Belkin:
559                                 padapter->ledpriv.LedStrategy = SW_LED_MODE5;
560                                 padapter->ledpriv.bRegUseLed = true;
561                                 break;
562                         case RT_CID_819x_WNC_COREGA:
563                                 padapter->ledpriv.LedStrategy = SW_LED_MODE6;
564                                 padapter->ledpriv.bRegUseLed = true;
565                                 break;
566                         default:
567                                 padapter->ledpriv.LedStrategy = SW_LED_MODE0;
568                                 padapter->ledpriv.bRegUseLed = false;
569                                 break;
570                         }
571                 } else
572                         AutoloadFail = false;
573                 if (((mac[0] == 0xff) && (mac[1] == 0xff) &&
574                      (mac[2] == 0xff) && (mac[3] == 0xff) &&
575                      (mac[4] == 0xff) && (mac[5] == 0xff)) ||
576                     ((mac[0] == 0x00) && (mac[1] == 0x00) &&
577                      (mac[2] == 0x00) && (mac[3] == 0x00) &&
578                      (mac[4] == 0x00) && (mac[5] == 0x00)) ||
579                      (AutoloadFail == false)) {
580                         mac[0] = 0x00;
581                         mac[1] = 0xe0;
582                         mac[2] = 0x4c;
583                         mac[3] = 0x87;
584                         mac[4] = 0x00;
585                         mac[5] = 0x00;
586                 }
587                 if (r8712_initmac) {
588                         /* Make sure the user did not select a multicast
589                          * address by setting bit 1 of first octet.
590                          */
591                         mac[0] &= 0xFE;
592                         printk(KERN_INFO "r8712u: MAC Address from user = "
593                                "%pM\n", mac);
594                 } else
595                         printk(KERN_INFO "r8712u: MAC Address from efuse = "
596                                "%pM\n", mac);
597                 memcpy(pnetdev->dev_addr, mac, ETH_ALEN);
598         }
599         /* step 6. Load the firmware asynchronously */
600         if (rtl871x_load_fw(padapter))
601                 goto error;
602         spin_lock_init(&padapter->lockRxFF0Filter);
603         mutex_init(&padapter->mutex_start);
604         return 0;
605 error:
606         usb_put_dev(udev);
607         usb_set_intfdata(pusb_intf, NULL);
608         if (padapter->dvobj_deinit != NULL)
609                 padapter->dvobj_deinit(padapter);
610         if (pnetdev)
611                 free_netdev(pnetdev);
612         return -ENODEV;
613 }
614
615 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove()
616  * => how to recognize both */
617 static void r871xu_dev_remove(struct usb_interface *pusb_intf)
618 {
619         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
620         struct _adapter *padapter = netdev_priv(pnetdev);
621         struct usb_device *udev = interface_to_usbdev(pusb_intf);
622
623         usb_set_intfdata(pusb_intf, NULL);
624         if (padapter->fw_found)
625                 release_firmware(padapter->fw);
626         /* never exit with a firmware callback pending */
627         wait_for_completion(&padapter->rtl8712_fw_ready);
628         if (drvpriv.drv_registered == true)
629                 padapter->bSurpriseRemoved = true;
630         if (pnetdev != NULL) {
631                 /* will call netdev_close() */
632                 unregister_netdev(pnetdev);
633         }
634         flush_scheduled_work();
635         udelay(1);
636         /*Stop driver mlme relation timer */
637         if (padapter->fw_found)
638                 r8712_stop_drv_timers(padapter);
639         r871x_dev_unload(padapter);
640         r8712_free_drv_sw(padapter);
641         usb_set_intfdata(pusb_intf, NULL);
642         /* decrease the reference count of the usb device structure
643          * when disconnect */
644         usb_put_dev(udev);
645         /* If we didn't unplug usb dongle and remove/insert module, driver
646          * fails on sitesurvey for the first time when device is up.
647          * Reset usb port for sitesurvey fail issue. */
648         if (udev->state != USB_STATE_NOTATTACHED)
649                 usb_reset_device(udev);
650         return;
651 }
652
653 static int __init r8712u_drv_entry(void)
654 {
655         drvpriv.drv_registered = true;
656         return usb_register(&drvpriv.r871xu_drv);
657 }
658
659 static void __exit r8712u_drv_halt(void)
660 {
661         drvpriv.drv_registered = false;
662         usb_deregister(&drvpriv.r871xu_drv);
663         printk(KERN_INFO "r8712u: Driver unloaded\n");
664 }
665
666 module_init(r8712u_drv_entry);
667 module_exit(r8712u_drv_halt);