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