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