1 /******************************************************************************
2 * os_intfs.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 _OS_INTFS_C_
30
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/kthread.h>
34 #include <linux/firmware.h>
35 #include "osdep_service.h"
36 #include "drv_types.h"
37 #include "xmit_osdep.h"
38 #include "recv_osdep.h"
39 #include "rtl871x_ioctl.h"
40 #include "usb_osintf.h"
41
42 MODULE_LICENSE("GPL");
43 MODULE_DESCRIPTION("rtl871x wireless lan driver");
44 MODULE_AUTHOR("Larry Finger");
45
46 static char ifname[IFNAMSIZ] = "wlan%d";
47
48 /* module param defaults */
49 static int chip_version = RTL8712_2ndCUT;
50 static int rfintfs = HWPI;
51 static int lbkmode = RTL8712_AIR_TRX;
52 static int hci = RTL8712_USB;
53 static int ampdu_enable = 1;/*for enable tx_ampdu*/
54
55 /* The video_mode variable is for vedio mode.*/
56 /* It may be specify when inserting module with video_mode=1 parameter.*/
57 static int video_mode = 1; /* enable video mode*/
58
59 /*Ndis802_11Infrastructure; infra, ad-hoc, auto*/
60 static int network_mode = Ndis802_11IBSS;
61 static int channel = 1;/*ad-hoc support requirement*/
62 static int wireless_mode = WIRELESS_11BG;
63 static int vrtl_carrier_sense = AUTO_VCS;
64 static int vcs_type = RTS_CTS;
65 static int frag_thresh = 2346;
66 static int preamble = PREAMBLE_LONG;/*long, short, auto*/
67 static int scan_mode = 1;/*active, passive*/
68 static int adhoc_tx_pwr = 1;
69 static int soft_ap;
70 static int smart_ps = 1;
71 static int power_mgnt = PS_MODE_ACTIVE;
72 static int radio_enable = 1;
73 static int long_retry_lmt = 7;
74 static int short_retry_lmt = 7;
75 static int busy_thresh = 40;
76 static int ack_policy = NORMAL_ACK;
77 static int mp_mode;
78 static int software_encrypt;
79 static int software_decrypt;
80
81 static int wmm_enable;/* default is set to disable the wmm.*/
82 static int uapsd_enable;
83 static int uapsd_max_sp = NO_LIMIT;
84 static int uapsd_acbk_en;
85 static int uapsd_acbe_en;
86 static int uapsd_acvi_en;
87 static int uapsd_acvo_en;
88
89 static int ht_enable = 1;
90 static int cbw40_enable = 1;
91 static int rf_config = RTL8712_RF_1T2R; /* 1T2R*/
92 static int low_power;
93 /* mac address to use instead of the one stored in Efuse */
94 char *r8712_initmac;
95 static char *initmac;
96 /* if wifi_test = 1, driver will disable the turbo mode and pass it to
97 * firmware private.
98 */
99 static int wifi_test = 0;
100
101 module_param_string(ifname, ifname, sizeof(ifname), S_IRUGO|S_IWUSR);
102 module_param(wifi_test, int, 0644);
103 module_param(initmac, charp, 0644);
104 module_param(video_mode, int, 0644);
105 module_param(chip_version, int, 0644);
106 module_param(rfintfs, int, 0644);
107 module_param(lbkmode, int, 0644);
108 module_param(hci, int, 0644);
109 module_param(network_mode, int, 0644);
110 module_param(channel, int, 0644);
111 module_param(mp_mode, int, 0644);
112 module_param(wmm_enable, int, 0644);
113 module_param(vrtl_carrier_sense, int, 0644);
114 module_param(vcs_type, int, 0644);
115 module_param(busy_thresh, int, 0644);
116 module_param(ht_enable, int, 0644);
117 module_param(cbw40_enable, int, 0644);
118 module_param(ampdu_enable, int, 0644);
119 module_param(rf_config, int, 0644);
120 module_param(power_mgnt, int, 0644);
121 module_param(low_power, int, 0644);
122
123 MODULE_PARM_DESC(ifname, " Net interface name, wlan%d=default");
124 MODULE_PARM_DESC(initmac, "MAC-Address, default: use FUSE");
125
126 static uint loadparam(struct _adapter *padapter, struct net_device *pnetdev);
127 static int netdev_open(struct net_device *pnetdev);
128 static int netdev_close(struct net_device *pnetdev);
129
loadparam(struct _adapter * padapter,struct net_device * pnetdev)130 static uint loadparam(struct _adapter *padapter, struct net_device *pnetdev)
131 {
132 uint status = _SUCCESS;
133 struct registry_priv *registry_par = &padapter->registrypriv;
134
135 registry_par->chip_version = (u8)chip_version;
136 registry_par->rfintfs = (u8)rfintfs;
137 registry_par->lbkmode = (u8)lbkmode;
138 registry_par->hci = (u8)hci;
139 registry_par->network_mode = (u8)network_mode;
140 memcpy(registry_par->ssid.Ssid, "ANY", 3);
141 registry_par->ssid.SsidLength = 3;
142 registry_par->channel = (u8)channel;
143 registry_par->wireless_mode = (u8)wireless_mode;
144 registry_par->vrtl_carrier_sense = (u8)vrtl_carrier_sense ;
145 registry_par->vcs_type = (u8)vcs_type;
146 registry_par->frag_thresh = (u16)frag_thresh;
147 registry_par->preamble = (u8)preamble;
148 registry_par->scan_mode = (u8)scan_mode;
149 registry_par->adhoc_tx_pwr = (u8)adhoc_tx_pwr;
150 registry_par->soft_ap = (u8)soft_ap;
151 registry_par->smart_ps = (u8)smart_ps;
152 registry_par->power_mgnt = (u8)power_mgnt;
153 registry_par->radio_enable = (u8)radio_enable;
154 registry_par->long_retry_lmt = (u8)long_retry_lmt;
155 registry_par->short_retry_lmt = (u8)short_retry_lmt;
156 registry_par->busy_thresh = (u16)busy_thresh;
157 registry_par->ack_policy = (u8)ack_policy;
158 registry_par->mp_mode = (u8)mp_mode;
159 registry_par->software_encrypt = (u8)software_encrypt;
160 registry_par->software_decrypt = (u8)software_decrypt;
161 /*UAPSD*/
162 registry_par->wmm_enable = (u8)wmm_enable;
163 registry_par->uapsd_enable = (u8)uapsd_enable;
164 registry_par->uapsd_max_sp = (u8)uapsd_max_sp;
165 registry_par->uapsd_acbk_en = (u8)uapsd_acbk_en;
166 registry_par->uapsd_acbe_en = (u8)uapsd_acbe_en;
167 registry_par->uapsd_acvi_en = (u8)uapsd_acvi_en;
168 registry_par->uapsd_acvo_en = (u8)uapsd_acvo_en;
169 registry_par->ht_enable = (u8)ht_enable;
170 registry_par->cbw40_enable = (u8)cbw40_enable;
171 registry_par->ampdu_enable = (u8)ampdu_enable;
172 registry_par->rf_config = (u8)rf_config;
173 registry_par->low_power = (u8)low_power;
174 registry_par->wifi_test = (u8) wifi_test;
175 r8712_initmac = initmac;
176 return status;
177 }
178
r871x_net_set_mac_address(struct net_device * pnetdev,void * p)179 static int r871x_net_set_mac_address(struct net_device *pnetdev, void *p)
180 {
181 struct _adapter *padapter = (struct _adapter *)netdev_priv(pnetdev);
182 struct sockaddr *addr = p;
183
184 if (padapter->bup == false)
185 memcpy(pnetdev->dev_addr, addr->sa_data, ETH_ALEN);
186 return 0;
187 }
188
r871x_net_get_stats(struct net_device * pnetdev)189 static struct net_device_stats *r871x_net_get_stats(struct net_device *pnetdev)
190 {
191 struct _adapter *padapter = (struct _adapter *) netdev_priv(pnetdev);
192 struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
193 struct recv_priv *precvpriv = &(padapter->recvpriv);
194
195 padapter->stats.tx_packets = pxmitpriv->tx_pkts;
196 padapter->stats.rx_packets = precvpriv->rx_pkts;
197 padapter->stats.tx_dropped = pxmitpriv->tx_drop;
198 padapter->stats.rx_dropped = precvpriv->rx_drop;
199 padapter->stats.tx_bytes = pxmitpriv->tx_bytes;
200 padapter->stats.rx_bytes = precvpriv->rx_bytes;
201 return &padapter->stats;
202 }
203
204 static const struct net_device_ops rtl8712_netdev_ops = {
205 .ndo_open = netdev_open,
206 .ndo_stop = netdev_close,
207 .ndo_start_xmit = r8712_xmit_entry,
208 .ndo_set_mac_address = r871x_net_set_mac_address,
209 .ndo_get_stats = r871x_net_get_stats,
210 .ndo_do_ioctl = r871x_ioctl,
211 };
212
r8712_init_netdev(void)213 struct net_device *r8712_init_netdev(void)
214 {
215 struct _adapter *padapter;
216 struct net_device *pnetdev;
217
218 pnetdev = alloc_etherdev(sizeof(struct _adapter));
219 if (!pnetdev)
220 return NULL;
221 if (dev_alloc_name(pnetdev, ifname) < 0) {
222 strcpy(ifname, "wlan%d");
223 dev_alloc_name(pnetdev, ifname);
224 }
225 padapter = (struct _adapter *) netdev_priv(pnetdev);
226 padapter->pnetdev = pnetdev;
227 printk(KERN_INFO "r8712u: register rtl8712_netdev_ops to"
228 " netdev_ops\n");
229 pnetdev->netdev_ops = &rtl8712_netdev_ops;
230 pnetdev->watchdog_timeo = HZ; /* 1 second timeout */
231 pnetdev->wireless_handlers = (struct iw_handler_def *)
232 &r871x_handlers_def;
233 /*step 2.*/
234 loadparam(padapter, pnetdev);
235 netif_carrier_off(pnetdev);
236 padapter->pid = 0; /* Initial the PID value used for HW PBC.*/
237 return pnetdev;
238 }
239
start_drv_threads(struct _adapter * padapter)240 static u32 start_drv_threads(struct _adapter *padapter)
241 {
242 padapter->cmdThread = kthread_run(r8712_cmd_thread, padapter,
243 padapter->pnetdev->name);
244 if (IS_ERR(padapter->cmdThread) < 0)
245 return _FAIL;
246 return _SUCCESS;
247 }
248
r8712_stop_drv_threads(struct _adapter * padapter)249 void r8712_stop_drv_threads(struct _adapter *padapter)
250 {
251 /*Below is to termindate r8712_cmd_thread & event_thread...*/
252 up(&padapter->cmdpriv.cmd_queue_sema);
253 if (padapter->cmdThread)
254 _down_sema(&padapter->cmdpriv.terminate_cmdthread_sema);
255 padapter->cmdpriv.cmd_seq = 1;
256 }
257
start_drv_timers(struct _adapter * padapter)258 static void start_drv_timers(struct _adapter *padapter)
259 {
260 _set_timer(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
261 5000);
262 _set_timer(&padapter->mlmepriv.wdg_timer, 2000);
263 }
264
r8712_stop_drv_timers(struct _adapter * padapter)265 void r8712_stop_drv_timers(struct _adapter *padapter)
266 {
267 _cancel_timer_ex(&padapter->mlmepriv.assoc_timer);
268 _cancel_timer_ex(&padapter->securitypriv.tkip_timer);
269 _cancel_timer_ex(&padapter->mlmepriv.scan_to_timer);
270 _cancel_timer_ex(&padapter->mlmepriv.dhcp_timer);
271 _cancel_timer_ex(&padapter->mlmepriv.wdg_timer);
272 _cancel_timer_ex(&padapter->mlmepriv.sitesurveyctrl.
273 sitesurvey_ctrl_timer);
274 }
275
init_default_value(struct _adapter * padapter)276 static u8 init_default_value(struct _adapter *padapter)
277 {
278 u8 ret = _SUCCESS;
279 struct registry_priv *pregistrypriv = &padapter->registrypriv;
280 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
281 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
282 struct security_priv *psecuritypriv = &padapter->securitypriv;
283
284 /*xmit_priv*/
285 pxmitpriv->vcs_setting = pregistrypriv->vrtl_carrier_sense;
286 pxmitpriv->vcs = pregistrypriv->vcs_type;
287 pxmitpriv->vcs_type = pregistrypriv->vcs_type;
288 pxmitpriv->rts_thresh = pregistrypriv->rts_thresh;
289 pxmitpriv->frag_len = pregistrypriv->frag_thresh;
290 /* mlme_priv */
291 /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
292 pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
293 /*ht_priv*/
294 {
295 int i;
296 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
297
298 phtpriv->ampdu_enable = false;/*set to disabled*/
299 for (i = 0; i < 16; i++)
300 phtpriv->baddbareq_issued[i] = false;
301 }
302 /*security_priv*/
303 psecuritypriv->sw_encrypt = pregistrypriv->software_encrypt;
304 psecuritypriv->sw_decrypt = pregistrypriv->software_decrypt;
305 psecuritypriv->binstallGrpkey = _FAIL;
306 /*pwrctrl_priv*/
307 /*registry_priv*/
308 r8712_init_registrypriv_dev_network(padapter);
309 r8712_update_registrypriv_dev_network(padapter);
310 /*misc.*/
311 return ret;
312 }
313
r8712_init_drv_sw(struct _adapter * padapter)314 u8 r8712_init_drv_sw(struct _adapter *padapter)
315 {
316 if ((r8712_init_cmd_priv(&padapter->cmdpriv)) == _FAIL)
317 return _FAIL;
318 padapter->cmdpriv.padapter = padapter;
319 if ((r8712_init_evt_priv(&padapter->evtpriv)) == _FAIL)
320 return _FAIL;
321 if (r8712_init_mlme_priv(padapter) == _FAIL)
322 return _FAIL;
323 _r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
324 _r8712_init_recv_priv(&padapter->recvpriv, padapter);
325 memset((unsigned char *)&padapter->securitypriv, 0,
326 sizeof(struct security_priv));
327 _init_timer(&(padapter->securitypriv.tkip_timer), padapter->pnetdev,
328 r8712_use_tkipkey_handler, padapter);
329 _r8712_init_sta_priv(&padapter->stapriv);
330 padapter->stapriv.padapter = padapter;
331 r8712_init_bcmc_stainfo(padapter);
332 r8712_init_pwrctrl_priv(padapter);
333 mp871xinit(padapter);
334 if (init_default_value(padapter) != _SUCCESS)
335 return _FAIL;
336 r8712_InitSwLeds(padapter);
337 return _SUCCESS;
338 }
339
r8712_free_drv_sw(struct _adapter * padapter)340 u8 r8712_free_drv_sw(struct _adapter *padapter)
341 {
342 struct net_device *pnetdev = (struct net_device *)padapter->pnetdev;
343
344 r8712_free_cmd_priv(&padapter->cmdpriv);
345 r8712_free_evt_priv(&padapter->evtpriv);
346 r8712_DeInitSwLeds(padapter);
347 r8712_free_mlme_priv(&padapter->mlmepriv);
348 r8712_free_io_queue(padapter);
349 _free_xmit_priv(&padapter->xmitpriv);
350 if (padapter->fw_found)
351 _r8712_free_sta_priv(&padapter->stapriv);
352 _r8712_free_recv_priv(&padapter->recvpriv);
353 mp871xdeinit(padapter);
354 if (pnetdev)
355 free_netdev(pnetdev);
356 return _SUCCESS;
357 }
358
359
enable_video_mode(struct _adapter * padapter,int cbw40_value)360 static void enable_video_mode(struct _adapter *padapter, int cbw40_value)
361 {
362 /* bit 8:
363 * 1 -> enable video mode to 96B AP
364 * 0 -> disable video mode to 96B AP
365 * bit 9:
366 * 1 -> enable 40MHz mode
367 * 0 -> disable 40MHz mode
368 * bit 10:
369 * 1 -> enable STBC
370 * 0 -> disable STBC
371 */
372 u32 intcmd = 0xf4000500; /* enable bit8, bit10*/
373
374 if (cbw40_value) {
375 /* if the driver supports the 40M bandwidth,
376 * we can enable the bit 9.*/
377 intcmd |= 0x200;
378 }
379 r8712_fw_cmd(padapter, intcmd);
380 }
381
382 /**
383 *
384 * This function intends to handle the activation of an interface
385 * i.e. when it is brought Up/Active from a Down state.
386 *
387 */
netdev_open(struct net_device * pnetdev)388 static int netdev_open(struct net_device *pnetdev)
389 {
390 struct _adapter *padapter = (struct _adapter *)netdev_priv(pnetdev);
391
392 mutex_lock(&padapter->mutex_start);
393 if (padapter->bup == false) {
394 padapter->bDriverStopped = false;
395 padapter->bSurpriseRemoved = false;
396 padapter->bup = true;
397 if (rtl871x_hal_init(padapter) != _SUCCESS)
398 goto netdev_open_error;
399 if (r8712_initmac == NULL)
400 /* Use the mac address stored in the Efuse */
401 memcpy(pnetdev->dev_addr,
402 padapter->eeprompriv.mac_addr, ETH_ALEN);
403 else {
404 /* We have to inform f/w to use user-supplied MAC
405 * address.
406 */
407 msleep(200);
408 r8712_setMacAddr_cmd(padapter, (u8 *)pnetdev->dev_addr);
409 /*
410 * The "myid" function will get the wifi mac address
411 * from eeprompriv structure instead of netdev
412 * structure. So, we have to overwrite the mac_addr
413 * stored in the eeprompriv structure. In this case,
414 * the real mac address won't be used anymore. So that,
415 * the eeprompriv.mac_addr should store the mac which
416 * users specify.
417 */
418 memcpy(padapter->eeprompriv.mac_addr,
419 pnetdev->dev_addr, ETH_ALEN);
420 }
421 if (start_drv_threads(padapter) != _SUCCESS)
422 goto netdev_open_error;
423 if (padapter->dvobjpriv.inirp_init == NULL)
424 goto netdev_open_error;
425 else
426 padapter->dvobjpriv.inirp_init(padapter);
427 r8712_set_ps_mode(padapter, padapter->registrypriv.power_mgnt,
428 padapter->registrypriv.smart_ps);
429 }
430 if (!netif_queue_stopped(pnetdev))
431 netif_start_queue(pnetdev);
432 else
433 netif_wake_queue(pnetdev);
434
435 if (video_mode)
436 enable_video_mode(padapter, cbw40_enable);
437 /* start driver mlme relation timer */
438 start_drv_timers(padapter);
439 padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
440 mutex_unlock(&padapter->mutex_start);
441 return 0;
442 netdev_open_error:
443 padapter->bup = false;
444 netif_carrier_off(pnetdev);
445 netif_stop_queue(pnetdev);
446 mutex_unlock(&padapter->mutex_start);
447 return -1;
448 }
449
450 /**
451 *
452 * This function intends to handle the shutdown of an interface
453 * i.e. when it is brought Down from an Up/Active state.
454 *
455 */
netdev_close(struct net_device * pnetdev)456 static int netdev_close(struct net_device *pnetdev)
457 {
458 struct _adapter *padapter = (struct _adapter *) netdev_priv(pnetdev);
459
460 /* Close LED*/
461 padapter->ledpriv.LedControlHandler(padapter, LED_CTL_POWER_OFF);
462 msleep(200);
463
464 /*s1.*/
465 if (pnetdev) {
466 if (!netif_queue_stopped(pnetdev))
467 netif_stop_queue(pnetdev);
468 }
469 /*s2.*/
470 /*s2-1. issue disassoc_cmd to fw*/
471 r8712_disassoc_cmd(padapter);
472 /*s2-2. indicate disconnect to os*/
473 r8712_ind_disconnect(padapter);
474 /*s2-3.*/
475 r8712_free_assoc_resources(padapter);
476 /*s2-4.*/
477 r8712_free_network_queue(padapter);
478 return 0;
479 }
480
481 #include "mlme_osdep.h"
482