1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 * os_intfs.c
4 *
5 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
6 * Linux device driver for RTL8192SU
7 *
8 * Modifications for inclusion into the Linux staging tree are
9 * Copyright(c) 2010 Larry Finger. All rights reserved.
10 *
11 * Contact information:
12 * WLAN FAE <wlanfae@realtek.com>.
13 * Larry Finger <Larry.Finger@lwfinger.net>
14 *
15 ******************************************************************************/
16
17 #define _OS_INTFS_C_
18
19 #include <linux/module.h>
20 #include <linux/kthread.h>
21 #include <linux/firmware.h>
22 #include "osdep_service.h"
23 #include "drv_types.h"
24 #include "xmit_osdep.h"
25 #include "recv_osdep.h"
26 #include "rtl871x_ioctl.h"
27 #include "usb_osintf.h"
28
29 MODULE_LICENSE("GPL");
30 MODULE_DESCRIPTION("rtl871x wireless lan driver");
31 MODULE_AUTHOR("Larry Finger");
32
33 static char ifname[IFNAMSIZ] = "wlan%d";
34
35 /* module param defaults */
36 static int chip_version = RTL8712_2ndCUT;
37 static int rfintfs = HWPI;
38 static int lbkmode = RTL8712_AIR_TRX;
39 static int hci = RTL8712_USB;
40 static int ampdu_enable = 1;/*for enable tx_ampdu*/
41
42 /* The video_mode variable is for video mode.*/
43 /* It may be specify when inserting module with video_mode=1 parameter.*/
44 static int video_mode = 1; /* enable video mode*/
45
46 /*Ndis802_11Infrastructure; infra, ad-hoc, auto*/
47 static int network_mode = Ndis802_11IBSS;
48 static int channel = 1;/*ad-hoc support requirement*/
49 static int wireless_mode = WIRELESS_11BG;
50 static int vrtl_carrier_sense = AUTO_VCS;
51 static int vcs_type = RTS_CTS;
52 static int frag_thresh = 2346;
53 static int preamble = PREAMBLE_LONG;/*long, short, auto*/
54 static int scan_mode = 1;/*active, passive*/
55 static int adhoc_tx_pwr = 1;
56 static int soft_ap;
57 static int smart_ps = 1;
58 static int power_mgnt = PS_MODE_ACTIVE;
59 static int radio_enable = 1;
60 static int long_retry_lmt = 7;
61 static int short_retry_lmt = 7;
62 static int busy_thresh = 40;
63 static int ack_policy = NORMAL_ACK;
64 static int mp_mode;
65 static int software_encrypt;
66 static int software_decrypt;
67
68 static int wmm_enable;/* default is set to disable the wmm.*/
69 static int uapsd_enable;
70 static int uapsd_max_sp = NO_LIMIT;
71 static int uapsd_acbk_en;
72 static int uapsd_acbe_en;
73 static int uapsd_acvi_en;
74 static int uapsd_acvo_en;
75
76 static int ht_enable = 1;
77 static int cbw40_enable = 1;
78 static int rf_config = RTL8712_RF_1T2R; /* 1T2R*/
79 static int low_power;
80 /* mac address to use instead of the one stored in Efuse */
81 char *r8712_initmac;
82 static char *initmac;
83 /* if wifi_test = 1, driver will disable the turbo mode and pass it to
84 * firmware private.
85 */
86 static int wifi_test;
87
88 module_param_string(ifname, ifname, sizeof(ifname), 0644);
89 module_param(wifi_test, int, 0644);
90 module_param(initmac, charp, 0644);
91 module_param(video_mode, int, 0644);
92 module_param(chip_version, int, 0644);
93 module_param(rfintfs, int, 0644);
94 module_param(lbkmode, int, 0644);
95 module_param(hci, int, 0644);
96 module_param(network_mode, int, 0644);
97 module_param(channel, int, 0644);
98 module_param(mp_mode, int, 0644);
99 module_param(wmm_enable, int, 0644);
100 module_param(vrtl_carrier_sense, int, 0644);
101 module_param(vcs_type, int, 0644);
102 module_param(busy_thresh, int, 0644);
103 module_param(ht_enable, int, 0644);
104 module_param(cbw40_enable, int, 0644);
105 module_param(ampdu_enable, int, 0644);
106 module_param(rf_config, int, 0644);
107 module_param(power_mgnt, int, 0644);
108 module_param(low_power, int, 0644);
109
110 MODULE_PARM_DESC(ifname, " Net interface name, wlan%d=default");
111 MODULE_PARM_DESC(initmac, "MAC-Address, default: use FUSE");
112
113 static int netdev_open(struct net_device *pnetdev);
114 static int netdev_close(struct net_device *pnetdev);
115
loadparam(struct _adapter * padapter,struct net_device * pnetdev)116 static void loadparam(struct _adapter *padapter, struct net_device *pnetdev)
117 {
118 struct registry_priv *registry_par = &padapter->registrypriv;
119
120 registry_par->chip_version = (u8)chip_version;
121 registry_par->rfintfs = (u8)rfintfs;
122 registry_par->lbkmode = (u8)lbkmode;
123 registry_par->hci = (u8)hci;
124 registry_par->network_mode = (u8)network_mode;
125 memcpy(registry_par->ssid.Ssid, "ANY", 3);
126 registry_par->ssid.SsidLength = 3;
127 registry_par->channel = (u8)channel;
128 registry_par->wireless_mode = (u8)wireless_mode;
129 registry_par->vrtl_carrier_sense = (u8)vrtl_carrier_sense;
130 registry_par->vcs_type = (u8)vcs_type;
131 registry_par->frag_thresh = (u16)frag_thresh;
132 registry_par->preamble = (u8)preamble;
133 registry_par->scan_mode = (u8)scan_mode;
134 registry_par->adhoc_tx_pwr = (u8)adhoc_tx_pwr;
135 registry_par->soft_ap = (u8)soft_ap;
136 registry_par->smart_ps = (u8)smart_ps;
137 registry_par->power_mgnt = (u8)power_mgnt;
138 registry_par->radio_enable = (u8)radio_enable;
139 registry_par->long_retry_lmt = (u8)long_retry_lmt;
140 registry_par->short_retry_lmt = (u8)short_retry_lmt;
141 registry_par->busy_thresh = (u16)busy_thresh;
142 registry_par->ack_policy = (u8)ack_policy;
143 registry_par->mp_mode = (u8)mp_mode;
144 registry_par->software_encrypt = (u8)software_encrypt;
145 registry_par->software_decrypt = (u8)software_decrypt;
146 /*UAPSD*/
147 registry_par->wmm_enable = (u8)wmm_enable;
148 registry_par->uapsd_enable = (u8)uapsd_enable;
149 registry_par->uapsd_max_sp = (u8)uapsd_max_sp;
150 registry_par->uapsd_acbk_en = (u8)uapsd_acbk_en;
151 registry_par->uapsd_acbe_en = (u8)uapsd_acbe_en;
152 registry_par->uapsd_acvi_en = (u8)uapsd_acvi_en;
153 registry_par->uapsd_acvo_en = (u8)uapsd_acvo_en;
154 registry_par->ht_enable = (u8)ht_enable;
155 registry_par->cbw40_enable = (u8)cbw40_enable;
156 registry_par->ampdu_enable = (u8)ampdu_enable;
157 registry_par->rf_config = (u8)rf_config;
158 registry_par->low_power = (u8)low_power;
159 registry_par->wifi_test = (u8)wifi_test;
160 r8712_initmac = initmac;
161 }
162
r871x_net_set_mac_address(struct net_device * pnetdev,void * p)163 static int r871x_net_set_mac_address(struct net_device *pnetdev, void *p)
164 {
165 struct _adapter *padapter = netdev_priv(pnetdev);
166 struct sockaddr *addr = p;
167
168 if (!padapter->bup)
169 ether_addr_copy(pnetdev->dev_addr, addr->sa_data);
170 return 0;
171 }
172
r871x_net_get_stats(struct net_device * pnetdev)173 static struct net_device_stats *r871x_net_get_stats(struct net_device *pnetdev)
174 {
175 struct _adapter *padapter = netdev_priv(pnetdev);
176 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
177 struct recv_priv *precvpriv = &padapter->recvpriv;
178
179 padapter->stats.tx_packets = pxmitpriv->tx_pkts;
180 padapter->stats.rx_packets = precvpriv->rx_pkts;
181 padapter->stats.tx_dropped = pxmitpriv->tx_drop;
182 padapter->stats.rx_dropped = precvpriv->rx_drop;
183 padapter->stats.tx_bytes = pxmitpriv->tx_bytes;
184 padapter->stats.rx_bytes = precvpriv->rx_bytes;
185 return &padapter->stats;
186 }
187
188 static const struct net_device_ops rtl8712_netdev_ops = {
189 .ndo_open = netdev_open,
190 .ndo_stop = netdev_close,
191 .ndo_start_xmit = r8712_xmit_entry,
192 .ndo_set_mac_address = r871x_net_set_mac_address,
193 .ndo_get_stats = r871x_net_get_stats,
194 .ndo_do_ioctl = r871x_ioctl,
195 };
196
r8712_init_netdev(void)197 struct net_device *r8712_init_netdev(void)
198 {
199 struct _adapter *padapter;
200 struct net_device *pnetdev;
201
202 pnetdev = alloc_etherdev(sizeof(struct _adapter));
203 if (!pnetdev)
204 return NULL;
205 if (dev_alloc_name(pnetdev, ifname) < 0) {
206 strscpy(ifname, "wlan%d", sizeof(ifname));
207 dev_alloc_name(pnetdev, ifname);
208 }
209 padapter = netdev_priv(pnetdev);
210 padapter->pnetdev = pnetdev;
211 pr_info("r8712u: register rtl8712_netdev_ops to netdev_ops\n");
212 pnetdev->netdev_ops = &rtl8712_netdev_ops;
213 pnetdev->watchdog_timeo = HZ; /* 1 second timeout */
214 pnetdev->wireless_handlers = (struct iw_handler_def *)
215 &r871x_handlers_def;
216 loadparam(padapter, pnetdev);
217 netif_carrier_off(pnetdev);
218 padapter->pid = 0; /* Initial the PID value used for HW PBC.*/
219 return pnetdev;
220 }
221
start_drv_threads(struct _adapter * padapter)222 static u32 start_drv_threads(struct _adapter *padapter)
223 {
224 padapter->cmd_thread = kthread_run(r8712_cmd_thread, padapter, "%s",
225 padapter->pnetdev->name);
226 if (IS_ERR(padapter->cmd_thread))
227 return _FAIL;
228 return _SUCCESS;
229 }
230
r8712_stop_drv_threads(struct _adapter * padapter)231 void r8712_stop_drv_threads(struct _adapter *padapter)
232 {
233 struct completion *completion =
234 &padapter->cmdpriv.terminate_cmdthread_comp;
235
236 /*Below is to terminate r8712_cmd_thread & event_thread...*/
237 complete(&padapter->cmdpriv.cmd_queue_comp);
238 if (padapter->cmd_thread)
239 wait_for_completion_interruptible(completion);
240 padapter->cmdpriv.cmd_seq = 1;
241 }
242
start_drv_timers(struct _adapter * padapter)243 static void start_drv_timers(struct _adapter *padapter)
244 {
245 mod_timer(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
246 jiffies + msecs_to_jiffies(5000));
247 mod_timer(&padapter->mlmepriv.wdg_timer,
248 jiffies + msecs_to_jiffies(2000));
249 }
250
r8712_stop_drv_timers(struct _adapter * padapter)251 void r8712_stop_drv_timers(struct _adapter *padapter)
252 {
253 del_timer_sync(&padapter->mlmepriv.assoc_timer);
254 del_timer_sync(&padapter->securitypriv.tkip_timer);
255 del_timer_sync(&padapter->mlmepriv.scan_to_timer);
256 del_timer_sync(&padapter->mlmepriv.dhcp_timer);
257 del_timer_sync(&padapter->mlmepriv.wdg_timer);
258 del_timer_sync(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer);
259 }
260
init_default_value(struct _adapter * padapter)261 static void init_default_value(struct _adapter *padapter)
262 {
263 struct registry_priv *pregistrypriv = &padapter->registrypriv;
264 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
265 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
266 struct security_priv *psecuritypriv = &padapter->securitypriv;
267
268 /*xmit_priv*/
269 pxmitpriv->vcs_setting = pregistrypriv->vrtl_carrier_sense;
270 pxmitpriv->vcs = pregistrypriv->vcs_type;
271 pxmitpriv->vcs_type = pregistrypriv->vcs_type;
272 pxmitpriv->rts_thresh = pregistrypriv->rts_thresh;
273 pxmitpriv->frag_len = pregistrypriv->frag_thresh;
274 /* mlme_priv */
275 /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
276 pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
277 /*ht_priv*/
278 {
279 int i;
280 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
281
282 phtpriv->ampdu_enable = false;/*set to disabled*/
283 for (i = 0; i < 16; i++)
284 phtpriv->baddbareq_issued[i] = false;
285 }
286 /*security_priv*/
287 psecuritypriv->sw_encrypt = pregistrypriv->software_encrypt;
288 psecuritypriv->sw_decrypt = pregistrypriv->software_decrypt;
289 psecuritypriv->binstallGrpkey = _FAIL;
290 /*pwrctrl_priv*/
291 /*registry_priv*/
292 r8712_init_registrypriv_dev_network(padapter);
293 r8712_update_registrypriv_dev_network(padapter);
294 /*misc.*/
295 }
296
r8712_init_drv_sw(struct _adapter * padapter)297 int r8712_init_drv_sw(struct _adapter *padapter)
298 {
299 int ret;
300
301 ret = r8712_init_cmd_priv(&padapter->cmdpriv);
302 if (ret)
303 return ret;
304 padapter->cmdpriv.padapter = padapter;
305 ret = r8712_init_evt_priv(&padapter->evtpriv);
306 if (ret)
307 return ret;
308 ret = r8712_init_mlme_priv(padapter);
309 if (ret)
310 return ret;
311 _r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
312 _r8712_init_recv_priv(&padapter->recvpriv, padapter);
313 memset((unsigned char *)&padapter->securitypriv, 0,
314 sizeof(struct security_priv));
315 timer_setup(&padapter->securitypriv.tkip_timer,
316 r8712_use_tkipkey_handler, 0);
317 ret = _r8712_init_sta_priv(&padapter->stapriv);
318 if (ret)
319 return ret;
320 padapter->stapriv.padapter = padapter;
321 r8712_init_bcmc_stainfo(padapter);
322 r8712_init_pwrctrl_priv(padapter);
323 mp871xinit(padapter);
324 init_default_value(padapter);
325 r8712_InitSwLeds(padapter);
326 mutex_init(&padapter->mutex_start);
327 return ret;
328 }
329
r8712_free_drv_sw(struct _adapter * padapter)330 void r8712_free_drv_sw(struct _adapter *padapter)
331 {
332 r8712_free_cmd_priv(&padapter->cmdpriv);
333 r8712_free_evt_priv(&padapter->evtpriv);
334 r8712_DeInitSwLeds(padapter);
335 r8712_free_mlme_priv(&padapter->mlmepriv);
336 _free_xmit_priv(&padapter->xmitpriv);
337 _r8712_free_sta_priv(&padapter->stapriv);
338 _r8712_free_recv_priv(&padapter->recvpriv);
339 mp871xdeinit(padapter);
340 }
341
enable_video_mode(struct _adapter * padapter,int cbw40_value)342 static void enable_video_mode(struct _adapter *padapter, int cbw40_value)
343 {
344 /* bit 8:
345 * 1 -> enable video mode to 96B AP
346 * 0 -> disable video mode to 96B AP
347 * bit 9:
348 * 1 -> enable 40MHz mode
349 * 0 -> disable 40MHz mode
350 * bit 10:
351 * 1 -> enable STBC
352 * 0 -> disable STBC
353 */
354 u32 intcmd = 0xf4000500; /* enable bit8, bit10*/
355
356 if (cbw40_value) {
357 /* if the driver supports the 40M bandwidth,
358 * we can enable the bit 9.
359 */
360 intcmd |= 0x200;
361 }
362 r8712_fw_cmd(padapter, intcmd);
363 }
364
365 /*
366 *
367 * This function intends to handle the activation of an interface
368 * i.e. when it is brought Up/Active from a Down state.
369 *
370 */
netdev_open(struct net_device * pnetdev)371 static int netdev_open(struct net_device *pnetdev)
372 {
373 struct _adapter *padapter = netdev_priv(pnetdev);
374
375 mutex_lock(&padapter->mutex_start);
376 if (!padapter->bup) {
377 padapter->driver_stopped = false;
378 padapter->surprise_removed = false;
379 padapter->bup = true;
380 if (rtl871x_hal_init(padapter) != _SUCCESS)
381 goto netdev_open_error;
382 if (!r8712_initmac) {
383 /* Use the mac address stored in the Efuse */
384 memcpy(pnetdev->dev_addr,
385 padapter->eeprompriv.mac_addr, ETH_ALEN);
386 } else {
387 /* We have to inform f/w to use user-supplied MAC
388 * address.
389 */
390 msleep(200);
391 r8712_setMacAddr_cmd(padapter, (u8 *)pnetdev->dev_addr);
392 /*
393 * The "myid" function will get the wifi mac address
394 * from eeprompriv structure instead of netdev
395 * structure. So, we have to overwrite the mac_addr
396 * stored in the eeprompriv structure. In this case,
397 * the real mac address won't be used anymore. So that,
398 * the eeprompriv.mac_addr should store the mac which
399 * users specify.
400 */
401 memcpy(padapter->eeprompriv.mac_addr,
402 pnetdev->dev_addr, ETH_ALEN);
403 }
404 if (start_drv_threads(padapter) != _SUCCESS)
405 goto netdev_open_error;
406 if (!padapter->dvobjpriv.inirp_init)
407 goto netdev_open_error;
408 else
409 padapter->dvobjpriv.inirp_init(padapter);
410 r8712_set_ps_mode(padapter, padapter->registrypriv.power_mgnt,
411 padapter->registrypriv.smart_ps);
412 }
413 if (!netif_queue_stopped(pnetdev))
414 netif_start_queue(pnetdev);
415 else
416 netif_wake_queue(pnetdev);
417
418 if (video_mode)
419 enable_video_mode(padapter, cbw40_enable);
420 /* start driver mlme relation timer */
421 start_drv_timers(padapter);
422 padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
423 mutex_unlock(&padapter->mutex_start);
424 return 0;
425 netdev_open_error:
426 padapter->bup = false;
427 netif_carrier_off(pnetdev);
428 netif_stop_queue(pnetdev);
429 mutex_unlock(&padapter->mutex_start);
430 return -1;
431 }
432
433 /*
434 *
435 * This function intends to handle the shutdown of an interface
436 * i.e. when it is brought Down from an Up/Active state.
437 *
438 */
netdev_close(struct net_device * pnetdev)439 static int netdev_close(struct net_device *pnetdev)
440 {
441 struct _adapter *padapter = netdev_priv(pnetdev);
442
443 /* Close LED*/
444 padapter->ledpriv.LedControlHandler(padapter, LED_CTL_POWER_OFF);
445 msleep(200);
446
447 /*s1.*/
448 if (pnetdev) {
449 if (!netif_queue_stopped(pnetdev))
450 netif_stop_queue(pnetdev);
451 }
452 /*s2.*/
453 /*s2-1. issue disassoc_cmd to fw*/
454 r8712_disassoc_cmd(padapter);
455 /*s2-2. indicate disconnect to os*/
456 r8712_ind_disconnect(padapter);
457 /*s2-3.*/
458 r8712_free_assoc_resources(padapter);
459 /*s2-4.*/
460 r8712_free_network_queue(padapter);
461 return 0;
462 }
463
464 #include "mlme_osdep.h"
465