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 * Modifications for inclusion into the Linux staging tree are
17 * Copyright(c) 2010 Larry Finger. All rights reserved.
18 *
19 * Contact information:
20 * WLAN FAE <wlanfae@realtek.com>.
21 * Larry Finger <Larry.Finger@lwfinger.net>
22 *
23 ******************************************************************************/
24
25 #define _OS_INTFS_C_
26
27 #include <linux/module.h>
28 #include <linux/kthread.h>
29 #include <linux/firmware.h>
30 #include "osdep_service.h"
31 #include "drv_types.h"
32 #include "xmit_osdep.h"
33 #include "recv_osdep.h"
34 #include "rtl871x_ioctl.h"
35 #include "usb_osintf.h"
36
37 MODULE_LICENSE("GPL");
38 MODULE_DESCRIPTION("rtl871x wireless lan driver");
39 MODULE_AUTHOR("Larry Finger");
40
41 static char ifname[IFNAMSIZ] = "wlan%d";
42
43 /* module param defaults */
44 static int chip_version = RTL8712_2ndCUT;
45 static int rfintfs = HWPI;
46 static int lbkmode = RTL8712_AIR_TRX;
47 static int hci = RTL8712_USB;
48 static int ampdu_enable = 1;/*for enable tx_ampdu*/
49
50 /* The video_mode variable is for video mode.*/
51 /* It may be specify when inserting module with video_mode=1 parameter.*/
52 static int video_mode = 1; /* enable video mode*/
53
54 /*Ndis802_11Infrastructure; infra, ad-hoc, auto*/
55 static int network_mode = Ndis802_11IBSS;
56 static int channel = 1;/*ad-hoc support requirement*/
57 static int wireless_mode = WIRELESS_11BG;
58 static int vrtl_carrier_sense = AUTO_VCS;
59 static int vcs_type = RTS_CTS;
60 static int frag_thresh = 2346;
61 static int preamble = PREAMBLE_LONG;/*long, short, auto*/
62 static int scan_mode = 1;/*active, passive*/
63 static int adhoc_tx_pwr = 1;
64 static int soft_ap;
65 static int smart_ps = 1;
66 static int power_mgnt = PS_MODE_ACTIVE;
67 static int radio_enable = 1;
68 static int long_retry_lmt = 7;
69 static int short_retry_lmt = 7;
70 static int busy_thresh = 40;
71 static int ack_policy = NORMAL_ACK;
72 static int mp_mode;
73 static int software_encrypt;
74 static int software_decrypt;
75
76 static int wmm_enable;/* default is set to disable the wmm.*/
77 static int uapsd_enable;
78 static int uapsd_max_sp = NO_LIMIT;
79 static int uapsd_acbk_en;
80 static int uapsd_acbe_en;
81 static int uapsd_acvi_en;
82 static int uapsd_acvo_en;
83
84 static int ht_enable = 1;
85 static int cbw40_enable = 1;
86 static int rf_config = RTL8712_RF_1T2R; /* 1T2R*/
87 static int low_power;
88 /* mac address to use instead of the one stored in Efuse */
89 char *r8712_initmac;
90 static char *initmac;
91 /* if wifi_test = 1, driver will disable the turbo mode and pass it to
92 * firmware private.
93 */
94 static int wifi_test;
95
96 module_param_string(ifname, ifname, sizeof(ifname), 0644);
97 module_param(wifi_test, int, 0644);
98 module_param(initmac, charp, 0644);
99 module_param(video_mode, int, 0644);
100 module_param(chip_version, int, 0644);
101 module_param(rfintfs, int, 0644);
102 module_param(lbkmode, int, 0644);
103 module_param(hci, int, 0644);
104 module_param(network_mode, int, 0644);
105 module_param(channel, int, 0644);
106 module_param(mp_mode, int, 0644);
107 module_param(wmm_enable, int, 0644);
108 module_param(vrtl_carrier_sense, int, 0644);
109 module_param(vcs_type, int, 0644);
110 module_param(busy_thresh, int, 0644);
111 module_param(ht_enable, int, 0644);
112 module_param(cbw40_enable, int, 0644);
113 module_param(ampdu_enable, int, 0644);
114 module_param(rf_config, int, 0644);
115 module_param(power_mgnt, int, 0644);
116 module_param(low_power, int, 0644);
117
118 MODULE_PARM_DESC(ifname, " Net interface name, wlan%d=default");
119 MODULE_PARM_DESC(initmac, "MAC-Address, default: use FUSE");
120
121 static int netdev_open(struct net_device *pnetdev);
122 static int netdev_close(struct net_device *pnetdev);
123
loadparam(struct _adapter * padapter,struct net_device * pnetdev)124 static void loadparam(struct _adapter *padapter, struct net_device *pnetdev)
125 {
126 struct registry_priv *registry_par = &padapter->registrypriv;
127
128 registry_par->chip_version = (u8)chip_version;
129 registry_par->rfintfs = (u8)rfintfs;
130 registry_par->lbkmode = (u8)lbkmode;
131 registry_par->hci = (u8)hci;
132 registry_par->network_mode = (u8)network_mode;
133 memcpy(registry_par->ssid.Ssid, "ANY", 3);
134 registry_par->ssid.SsidLength = 3;
135 registry_par->channel = (u8)channel;
136 registry_par->wireless_mode = (u8)wireless_mode;
137 registry_par->vrtl_carrier_sense = (u8)vrtl_carrier_sense;
138 registry_par->vcs_type = (u8)vcs_type;
139 registry_par->frag_thresh = (u16)frag_thresh;
140 registry_par->preamble = (u8)preamble;
141 registry_par->scan_mode = (u8)scan_mode;
142 registry_par->adhoc_tx_pwr = (u8)adhoc_tx_pwr;
143 registry_par->soft_ap = (u8)soft_ap;
144 registry_par->smart_ps = (u8)smart_ps;
145 registry_par->power_mgnt = (u8)power_mgnt;
146 registry_par->radio_enable = (u8)radio_enable;
147 registry_par->long_retry_lmt = (u8)long_retry_lmt;
148 registry_par->short_retry_lmt = (u8)short_retry_lmt;
149 registry_par->busy_thresh = (u16)busy_thresh;
150 registry_par->ack_policy = (u8)ack_policy;
151 registry_par->mp_mode = (u8)mp_mode;
152 registry_par->software_encrypt = (u8)software_encrypt;
153 registry_par->software_decrypt = (u8)software_decrypt;
154 /*UAPSD*/
155 registry_par->wmm_enable = (u8)wmm_enable;
156 registry_par->uapsd_enable = (u8)uapsd_enable;
157 registry_par->uapsd_max_sp = (u8)uapsd_max_sp;
158 registry_par->uapsd_acbk_en = (u8)uapsd_acbk_en;
159 registry_par->uapsd_acbe_en = (u8)uapsd_acbe_en;
160 registry_par->uapsd_acvi_en = (u8)uapsd_acvi_en;
161 registry_par->uapsd_acvo_en = (u8)uapsd_acvo_en;
162 registry_par->ht_enable = (u8)ht_enable;
163 registry_par->cbw40_enable = (u8)cbw40_enable;
164 registry_par->ampdu_enable = (u8)ampdu_enable;
165 registry_par->rf_config = (u8)rf_config;
166 registry_par->low_power = (u8)low_power;
167 registry_par->wifi_test = (u8)wifi_test;
168 r8712_initmac = initmac;
169 }
170
r871x_net_set_mac_address(struct net_device * pnetdev,void * p)171 static int r871x_net_set_mac_address(struct net_device *pnetdev, void *p)
172 {
173 struct _adapter *padapter = netdev_priv(pnetdev);
174 struct sockaddr *addr = p;
175
176 if (!padapter->bup)
177 ether_addr_copy(pnetdev->dev_addr, addr->sa_data);
178 return 0;
179 }
180
r871x_net_get_stats(struct net_device * pnetdev)181 static struct net_device_stats *r871x_net_get_stats(struct net_device *pnetdev)
182 {
183 struct _adapter *padapter = netdev_priv(pnetdev);
184 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
185 struct recv_priv *precvpriv = &padapter->recvpriv;
186
187 padapter->stats.tx_packets = pxmitpriv->tx_pkts;
188 padapter->stats.rx_packets = precvpriv->rx_pkts;
189 padapter->stats.tx_dropped = pxmitpriv->tx_drop;
190 padapter->stats.rx_dropped = precvpriv->rx_drop;
191 padapter->stats.tx_bytes = pxmitpriv->tx_bytes;
192 padapter->stats.rx_bytes = precvpriv->rx_bytes;
193 return &padapter->stats;
194 }
195
196 static const struct net_device_ops rtl8712_netdev_ops = {
197 .ndo_open = netdev_open,
198 .ndo_stop = netdev_close,
199 .ndo_start_xmit = r8712_xmit_entry,
200 .ndo_set_mac_address = r871x_net_set_mac_address,
201 .ndo_get_stats = r871x_net_get_stats,
202 .ndo_do_ioctl = r871x_ioctl,
203 };
204
r8712_init_netdev(void)205 struct net_device *r8712_init_netdev(void)
206 {
207 struct _adapter *padapter;
208 struct net_device *pnetdev;
209
210 pnetdev = alloc_etherdev(sizeof(struct _adapter));
211 if (!pnetdev)
212 return NULL;
213 if (dev_alloc_name(pnetdev, ifname) < 0) {
214 strcpy(ifname, "wlan%d");
215 dev_alloc_name(pnetdev, ifname);
216 }
217 padapter = netdev_priv(pnetdev);
218 padapter->pnetdev = pnetdev;
219 pr_info("r8712u: register rtl8712_netdev_ops to netdev_ops\n");
220 pnetdev->netdev_ops = &rtl8712_netdev_ops;
221 pnetdev->watchdog_timeo = HZ; /* 1 second timeout */
222 pnetdev->wireless_handlers = (struct iw_handler_def *)
223 &r871x_handlers_def;
224 loadparam(padapter, pnetdev);
225 netif_carrier_off(pnetdev);
226 padapter->pid = 0; /* Initial the PID value used for HW PBC.*/
227 return pnetdev;
228 }
229
start_drv_threads(struct _adapter * padapter)230 static u32 start_drv_threads(struct _adapter *padapter)
231 {
232 padapter->cmdThread = kthread_run(r8712_cmd_thread, padapter, "%s",
233 padapter->pnetdev->name);
234 if (IS_ERR(padapter->cmdThread))
235 return _FAIL;
236 return _SUCCESS;
237 }
238
r8712_stop_drv_threads(struct _adapter * padapter)239 void r8712_stop_drv_threads(struct _adapter *padapter)
240 {
241 /*Below is to terminate r8712_cmd_thread & event_thread...*/
242 complete(&padapter->cmdpriv.cmd_queue_comp);
243 if (padapter->cmdThread)
244 wait_for_completion_interruptible(&padapter->cmdpriv.terminate_cmdthread_comp);
245 padapter->cmdpriv.cmd_seq = 1;
246 }
247
start_drv_timers(struct _adapter * padapter)248 static void start_drv_timers(struct _adapter *padapter)
249 {
250 mod_timer(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
251 jiffies + msecs_to_jiffies(5000));
252 mod_timer(&padapter->mlmepriv.wdg_timer,
253 jiffies + msecs_to_jiffies(2000));
254 }
255
r8712_stop_drv_timers(struct _adapter * padapter)256 void r8712_stop_drv_timers(struct _adapter *padapter)
257 {
258 del_timer_sync(&padapter->mlmepriv.assoc_timer);
259 del_timer_sync(&padapter->securitypriv.tkip_timer);
260 del_timer_sync(&padapter->mlmepriv.scan_to_timer);
261 del_timer_sync(&padapter->mlmepriv.dhcp_timer);
262 del_timer_sync(&padapter->mlmepriv.wdg_timer);
263 del_timer_sync(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer);
264 }
265
init_default_value(struct _adapter * padapter)266 static u8 init_default_value(struct _adapter *padapter)
267 {
268 struct registry_priv *pregistrypriv = &padapter->registrypriv;
269 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
270 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
271 struct security_priv *psecuritypriv = &padapter->securitypriv;
272
273 /*xmit_priv*/
274 pxmitpriv->vcs_setting = pregistrypriv->vrtl_carrier_sense;
275 pxmitpriv->vcs = pregistrypriv->vcs_type;
276 pxmitpriv->vcs_type = pregistrypriv->vcs_type;
277 pxmitpriv->rts_thresh = pregistrypriv->rts_thresh;
278 pxmitpriv->frag_len = pregistrypriv->frag_thresh;
279 /* mlme_priv */
280 /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
281 pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
282 /*ht_priv*/
283 {
284 int i;
285 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
286
287 phtpriv->ampdu_enable = false;/*set to disabled*/
288 for (i = 0; i < 16; i++)
289 phtpriv->baddbareq_issued[i] = false;
290 }
291 /*security_priv*/
292 psecuritypriv->sw_encrypt = pregistrypriv->software_encrypt;
293 psecuritypriv->sw_decrypt = pregistrypriv->software_decrypt;
294 psecuritypriv->binstallGrpkey = _FAIL;
295 /*pwrctrl_priv*/
296 /*registry_priv*/
297 r8712_init_registrypriv_dev_network(padapter);
298 r8712_update_registrypriv_dev_network(padapter);
299 /*misc.*/
300 return _SUCCESS;
301 }
302
r8712_init_drv_sw(struct _adapter * padapter)303 u8 r8712_init_drv_sw(struct _adapter *padapter)
304 {
305 if ((r8712_init_cmd_priv(&padapter->cmdpriv)) == _FAIL)
306 return _FAIL;
307 padapter->cmdpriv.padapter = padapter;
308 if ((r8712_init_evt_priv(&padapter->evtpriv)) == _FAIL)
309 return _FAIL;
310 if (r8712_init_mlme_priv(padapter) == _FAIL)
311 return _FAIL;
312 _r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
313 _r8712_init_recv_priv(&padapter->recvpriv, padapter);
314 memset((unsigned char *)&padapter->securitypriv, 0,
315 sizeof(struct security_priv));
316 setup_timer(&padapter->securitypriv.tkip_timer,
317 r8712_use_tkipkey_handler, (unsigned long)padapter);
318 _r8712_init_sta_priv(&padapter->stapriv);
319 padapter->stapriv.padapter = padapter;
320 r8712_init_bcmc_stainfo(padapter);
321 r8712_init_pwrctrl_priv(padapter);
322 mp871xinit(padapter);
323 if (init_default_value(padapter) != _SUCCESS)
324 return _FAIL;
325 r8712_InitSwLeds(padapter);
326 return _SUCCESS;
327 }
328
r8712_free_drv_sw(struct _adapter * padapter)329 u8 r8712_free_drv_sw(struct _adapter *padapter)
330 {
331 struct net_device *pnetdev = padapter->pnetdev;
332
333 r8712_free_cmd_priv(&padapter->cmdpriv);
334 r8712_free_evt_priv(&padapter->evtpriv);
335 r8712_DeInitSwLeds(padapter);
336 r8712_free_mlme_priv(&padapter->mlmepriv);
337 r8712_free_io_queue(padapter);
338 _free_xmit_priv(&padapter->xmitpriv);
339 _r8712_free_sta_priv(&padapter->stapriv);
340 _r8712_free_recv_priv(&padapter->recvpriv);
341 mp871xdeinit(padapter);
342 if (pnetdev)
343 free_netdev(pnetdev);
344 return _SUCCESS;
345 }
346
347
enable_video_mode(struct _adapter * padapter,int cbw40_value)348 static void enable_video_mode(struct _adapter *padapter, int cbw40_value)
349 {
350 /* bit 8:
351 * 1 -> enable video mode to 96B AP
352 * 0 -> disable video mode to 96B AP
353 * bit 9:
354 * 1 -> enable 40MHz mode
355 * 0 -> disable 40MHz mode
356 * bit 10:
357 * 1 -> enable STBC
358 * 0 -> disable STBC
359 */
360 u32 intcmd = 0xf4000500; /* enable bit8, bit10*/
361
362 if (cbw40_value) {
363 /* if the driver supports the 40M bandwidth,
364 * we can enable the bit 9.
365 */
366 intcmd |= 0x200;
367 }
368 r8712_fw_cmd(padapter, intcmd);
369 }
370
371 /**
372 *
373 * This function intends to handle the activation of an interface
374 * i.e. when it is brought Up/Active from a Down state.
375 *
376 */
netdev_open(struct net_device * pnetdev)377 static int netdev_open(struct net_device *pnetdev)
378 {
379 struct _adapter *padapter = netdev_priv(pnetdev);
380
381 mutex_lock(&padapter->mutex_start);
382 if (!padapter->bup) {
383 padapter->bDriverStopped = false;
384 padapter->bSurpriseRemoved = false;
385 padapter->bup = true;
386 if (rtl871x_hal_init(padapter) != _SUCCESS)
387 goto netdev_open_error;
388 if (!r8712_initmac)
389 /* Use the mac address stored in the Efuse */
390 memcpy(pnetdev->dev_addr,
391 padapter->eeprompriv.mac_addr, ETH_ALEN);
392 else {
393 /* We have to inform f/w to use user-supplied MAC
394 * address.
395 */
396 msleep(200);
397 r8712_setMacAddr_cmd(padapter, (u8 *)pnetdev->dev_addr);
398 /*
399 * The "myid" function will get the wifi mac address
400 * from eeprompriv structure instead of netdev
401 * structure. So, we have to overwrite the mac_addr
402 * stored in the eeprompriv structure. In this case,
403 * the real mac address won't be used anymore. So that,
404 * the eeprompriv.mac_addr should store the mac which
405 * users specify.
406 */
407 memcpy(padapter->eeprompriv.mac_addr,
408 pnetdev->dev_addr, ETH_ALEN);
409 }
410 if (start_drv_threads(padapter) != _SUCCESS)
411 goto netdev_open_error;
412 if (!padapter->dvobjpriv.inirp_init)
413 goto netdev_open_error;
414 else
415 padapter->dvobjpriv.inirp_init(padapter);
416 r8712_set_ps_mode(padapter, padapter->registrypriv.power_mgnt,
417 padapter->registrypriv.smart_ps);
418 }
419 if (!netif_queue_stopped(pnetdev))
420 netif_start_queue(pnetdev);
421 else
422 netif_wake_queue(pnetdev);
423
424 if (video_mode)
425 enable_video_mode(padapter, cbw40_enable);
426 /* start driver mlme relation timer */
427 start_drv_timers(padapter);
428 padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
429 mutex_unlock(&padapter->mutex_start);
430 return 0;
431 netdev_open_error:
432 padapter->bup = false;
433 netif_carrier_off(pnetdev);
434 netif_stop_queue(pnetdev);
435 mutex_unlock(&padapter->mutex_start);
436 return -1;
437 }
438
439 /**
440 *
441 * This function intends to handle the shutdown of an interface
442 * i.e. when it is brought Down from an Up/Active state.
443 *
444 */
netdev_close(struct net_device * pnetdev)445 static int netdev_close(struct net_device *pnetdev)
446 {
447 struct _adapter *padapter = netdev_priv(pnetdev);
448
449 /* Close LED*/
450 padapter->ledpriv.LedControlHandler(padapter, LED_CTL_POWER_OFF);
451 msleep(200);
452
453 /*s1.*/
454 if (pnetdev) {
455 if (!netif_queue_stopped(pnetdev))
456 netif_stop_queue(pnetdev);
457 }
458 /*s2.*/
459 /*s2-1. issue disassoc_cmd to fw*/
460 r8712_disassoc_cmd(padapter);
461 /*s2-2. indicate disconnect to os*/
462 r8712_ind_disconnect(padapter);
463 /*s2-3.*/
464 r8712_free_assoc_resources(padapter);
465 /*s2-4.*/
466 r8712_free_network_queue(padapter);
467 return 0;
468 }
469
470 #include "mlme_osdep.h"
471