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Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
[linux-btrfs-devel.git] / drivers / staging / rtl8712 / rtl8712_cmd.c
blob26c605e8cd6f165c57bf10788717ceddbf41169e
1 /******************************************************************************
2 * rtl8712_cmd.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 _RTL8712_CMD_C_
30
31 #include "osdep_service.h"
32 #include "drv_types.h"
33 #include "recv_osdep.h"
34 #include "mlme_osdep.h"
35 #include "rtl871x_byteorder.h"
36 #include "rtl871x_ioctl_set.h"
37
38 static void check_hw_pbc(struct _adapter *padapter)
39 {
40 u8 tmp1byte;
41
42 r8712_write8(padapter, MAC_PINMUX_CTRL, (GPIOMUX_EN | GPIOSEL_GPIO));
43 tmp1byte = r8712_read8(padapter, GPIO_IO_SEL);
44 tmp1byte &= ~(HAL_8192S_HW_GPIO_WPS_BIT);
45 r8712_write8(padapter, GPIO_IO_SEL, tmp1byte);
46 tmp1byte = r8712_read8(padapter, GPIO_CTRL);
47 if (tmp1byte == 0xff)
48 return ;
49 if (tmp1byte&HAL_8192S_HW_GPIO_WPS_BIT) {
50 /* Here we only set bPbcPressed to true
51 * After trigger PBC, the variable will be set to false */
52 DBG_8712("CheckPbcGPIO - PBC is pressed !!!!\n");
53 /* 0 is the default value and it means the application monitors
54 * the HW PBC doesn't privde its pid to driver. */
55 if (padapter->pid == 0)
56 return;
57 kill_pid(find_vpid(padapter->pid), SIGUSR1, 1);
58 }
59 }
60
61 /* query rx phy status from fw.
62 * Adhoc mode: beacon.
63 * Infrastructure mode: beacon , data. */
64 static void query_fw_rx_phy_status(struct _adapter *padapter)
65 {
66 u32 val32 = 0;
67 int pollingcnts = 50;
68
69 if (check_fwstate(&padapter->mlmepriv, _FW_LINKED) == true) {
70 r8712_write32(padapter, IOCMD_CTRL_REG, 0xf4000001);
71 msleep(100);
72 /* Wait FW complete IO Cmd */
73 while ((r8712_read32(padapter, IOCMD_CTRL_REG)) &&
74 (pollingcnts > 0)) {
75 pollingcnts--;
76 msleep(20);
77 }
78 if (pollingcnts != 0)
79 val32 = r8712_read32(padapter, IOCMD_DATA_REG);
80 else /* time out */
81 val32 = 0;
82 val32 = val32 >> 4;
83 padapter->recvpriv.fw_rssi =
84 (u8)r8712_signal_scale_mapping(val32);
85 }
86 }
87
88 /* check mlme, hw, phy, or dynamic algorithm status. */
89 static void StatusWatchdogCallback(struct _adapter *padapter)
90 {
91 check_hw_pbc(padapter);
92 query_fw_rx_phy_status(padapter);
93 }
94
95 static void r871x_internal_cmd_hdl(struct _adapter *padapter, u8 *pbuf)
96 {
97 struct drvint_cmd_parm *pdrvcmd;
98
99 if (!pbuf)
100 return;
101 pdrvcmd = (struct drvint_cmd_parm *)pbuf;
102 switch (pdrvcmd->i_cid) {
103 case WDG_WK_CID:
104 StatusWatchdogCallback(padapter);
105 break;
106 default:
107 break;
108 }
109 kfree(pdrvcmd->pbuf);
110 }
111
112 static u8 read_macreg_hdl(struct _adapter *padapter, u8 *pbuf)
113 {
114 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
115 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
116
117 /* invoke cmd->callback function */
118 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
119 if (pcmd_callback == NULL)
120 r8712_free_cmd_obj(pcmd);
121 else
122 pcmd_callback(padapter, pcmd);
123 return H2C_SUCCESS;
124 }
125
126 static u8 write_macreg_hdl(struct _adapter *padapter, u8 *pbuf)
127 {
128 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
129 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
130
131 /* invoke cmd->callback function */
132 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
133 if (pcmd_callback == NULL)
134 r8712_free_cmd_obj(pcmd);
135 else
136 pcmd_callback(padapter, pcmd);
137 return H2C_SUCCESS;
138 }
139
140 static u8 read_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
141 {
142 u32 val;
143 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
144 struct readBB_parm *prdbbparm;
145 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
146
147 prdbbparm = (struct readBB_parm *)pcmd->parmbuf;
148 if (pcmd->rsp && pcmd->rspsz > 0)
149 memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz);
150 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
151 if (pcmd_callback == NULL)
152 r8712_free_cmd_obj(pcmd);
153 else
154 pcmd_callback(padapter, pcmd);
155 return H2C_SUCCESS;
156 }
157
158 static u8 write_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
159 {
160 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
161 struct writeBB_parm *pwritebbparm;
162 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
163
164 pwritebbparm = (struct writeBB_parm *)pcmd->parmbuf;
165 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
166 if (pcmd_callback == NULL)
167 r8712_free_cmd_obj(pcmd);
168 else
169 pcmd_callback(padapter, pcmd);
170 return H2C_SUCCESS;
171 }
172
173 static u8 read_rfreg_hdl(struct _adapter *padapter, u8 *pbuf)
174 {
175 u32 val;
176 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
177 struct readRF_parm *prdrfparm;
178 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
179
180 prdrfparm = (struct readRF_parm *)pcmd->parmbuf;
181 if (pcmd->rsp && pcmd->rspsz > 0)
182 memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz);
183 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
184 if (pcmd_callback == NULL)
185 r8712_free_cmd_obj(pcmd);
186 else
187 pcmd_callback(padapter, pcmd);
188 return H2C_SUCCESS;
189 }
190
191 static u8 write_rfreg_hdl(struct _adapter *padapter, u8 *pbuf)
192 {
193 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
194 struct writeRF_parm *pwriterfparm;
195 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
196
197 pwriterfparm = (struct writeRF_parm *)pcmd->parmbuf;
198 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
199 if (pcmd_callback == NULL)
200 r8712_free_cmd_obj(pcmd);
201 else
202 pcmd_callback(padapter, pcmd);
203 return H2C_SUCCESS;
204 }
205
206 static u8 sys_suspend_hdl(struct _adapter *padapter, u8 *pbuf)
207 {
208 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
209 struct usb_suspend_parm *psetusbsuspend;
210
211 psetusbsuspend = (struct usb_suspend_parm *)pcmd->parmbuf;
212 r8712_free_cmd_obj(pcmd);
213 return H2C_SUCCESS;
214 }
215
216 static struct cmd_obj *cmd_hdl_filter(struct _adapter *padapter,
217 struct cmd_obj *pcmd)
218 {
219 struct cmd_obj *pcmd_r;
220
221 if (pcmd == NULL)
222 return pcmd;
223 pcmd_r = NULL;
224
225 switch (pcmd->cmdcode) {
226 case GEN_CMD_CODE(_Read_MACREG):
227 read_macreg_hdl(padapter, (u8 *)pcmd);
228 pcmd_r = pcmd;
229 break;
230 case GEN_CMD_CODE(_Write_MACREG):
231 write_macreg_hdl(padapter, (u8 *)pcmd);
232 pcmd_r = pcmd;
233 break;
234 case GEN_CMD_CODE(_Read_BBREG):
235 read_bbreg_hdl(padapter, (u8 *)pcmd);
236 break;
237 case GEN_CMD_CODE(_Write_BBREG):
238 write_bbreg_hdl(padapter, (u8 *)pcmd);
239 break;
240 case GEN_CMD_CODE(_Read_RFREG):
241 read_rfreg_hdl(padapter, (u8 *)pcmd);
242 break;
243 case GEN_CMD_CODE(_Write_RFREG):
244 write_rfreg_hdl(padapter, (u8 *)pcmd);
245 break;
246 case GEN_CMD_CODE(_SetUsbSuspend):
247 sys_suspend_hdl(padapter, (u8 *)pcmd);
248 break;
249 case GEN_CMD_CODE(_JoinBss):
250 r8712_joinbss_reset(padapter);
251 /* Before set JoinBss_CMD to FW, driver must ensure FW is in
252 * PS_MODE_ACTIVE. Directly write rpwm to radio on and assign
253 * new pwr_mode to Driver, instead of use workitem to change
254 * state. */
255 if (padapter->pwrctrlpriv.pwr_mode > PS_MODE_ACTIVE) {
256 padapter->pwrctrlpriv.pwr_mode = PS_MODE_ACTIVE;
257 _enter_pwrlock(&(padapter->pwrctrlpriv.lock));
258 r8712_set_rpwm(padapter, PS_STATE_S4);
259 up(&(padapter->pwrctrlpriv.lock));
260 }
261 pcmd_r = pcmd;
262 break;
263 case _DRV_INT_CMD_:
264 r871x_internal_cmd_hdl(padapter, pcmd->parmbuf);
265 r8712_free_cmd_obj(pcmd);
266 pcmd_r = NULL;
267 break;
268 default:
269 pcmd_r = pcmd;
270 break;
271 }
272 return pcmd_r; /* if returning pcmd_r == NULL, pcmd must be free. */
273 }
274
275 static u8 check_cmd_fifo(struct _adapter *padapter, uint sz)
276 {
277 u8 res = _SUCCESS;
278 return res;
279 }
280
281 u8 r8712_fw_cmd(struct _adapter *pAdapter, u32 cmd)
282 {
283 int pollingcnts = 50;
284
285 r8712_write32(pAdapter, IOCMD_CTRL_REG, cmd);
286 msleep(100);
287 while ((0 != r8712_read32(pAdapter, IOCMD_CTRL_REG)) &&
288 (pollingcnts > 0)) {
289 pollingcnts--;
290 msleep(20);
291 }
292 if (pollingcnts == 0)
293 return false;
294 return true;
295 }
296
297 void r8712_fw_cmd_data(struct _adapter *pAdapter, u32 *value, u8 flag)
298 {
299 if (flag == 0) /* set */
300 r8712_write32(pAdapter, IOCMD_DATA_REG, *value);
301 else /* query */
302 *value = r8712_read32(pAdapter, IOCMD_DATA_REG);
303 }
304
305 int r8712_cmd_thread(void *context)
306 {
307 struct cmd_obj *pcmd;
308 unsigned int cmdsz, wr_sz, *pcmdbuf, *prspbuf;
309 struct tx_desc *pdesc;
310 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
311 struct _adapter *padapter = (struct _adapter *)context;
312 struct cmd_priv *pcmdpriv = &(padapter->cmdpriv);
313
314 thread_enter(padapter);
315 while (1) {
316 if ((_down_sema(&(pcmdpriv->cmd_queue_sema))) == _FAIL)
317 break;
318 if ((padapter->bDriverStopped == true) ||
319 (padapter->bSurpriseRemoved == true))
320 break;
321 if (r8712_register_cmd_alive(padapter) != _SUCCESS)
322 continue;
323 _next:
324 pcmd = r8712_dequeue_cmd(&(pcmdpriv->cmd_queue));
325 if (!(pcmd)) {
326 r8712_unregister_cmd_alive(padapter);
327 continue;
328 }
329 pcmdbuf = (unsigned int *)pcmdpriv->cmd_buf;
330 prspbuf = (unsigned int *)pcmdpriv->rsp_buf;
331 pdesc = (struct tx_desc *)pcmdbuf;
332 memset(pdesc, 0, TXDESC_SIZE);
333 pcmd = cmd_hdl_filter(padapter, pcmd);
334 if (pcmd) { /* if pcmd != NULL, cmd will be handled by f/w */
335 struct dvobj_priv *pdvobj = (struct dvobj_priv *)
336 &padapter->dvobjpriv;
337 u8 blnPending = 0;
338 pcmdpriv->cmd_issued_cnt++;
339 cmdsz = _RND8((pcmd->cmdsz)); /* _RND8 */
340 wr_sz = TXDESC_SIZE + 8 + cmdsz;
341 pdesc->txdw0 |= cpu_to_le32((wr_sz-TXDESC_SIZE) &
342 0x0000ffff);
343 if (pdvobj->ishighspeed) {
344 if ((wr_sz % 512) == 0)
345 blnPending = 1;
346 } else {
347 if ((wr_sz % 64) == 0)
348 blnPending = 1;
349 }
350 if (blnPending) /* 32 bytes for TX Desc - 8 offset */
351 pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE +
352 OFFSET_SZ + 8) << OFFSET_SHT) &
353 0x00ff0000);
354 else {
355 pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE +
356 OFFSET_SZ) <<
357 OFFSET_SHT) &
358 0x00ff0000);
359 }
360 pdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
361 pdesc->txdw1 |= cpu_to_le32((0x13 << QSEL_SHT) &
362 0x00001f00);
363 pcmdbuf += (TXDESC_SIZE >> 2);
364 *pcmdbuf = cpu_to_le32((cmdsz & 0x0000ffff) |
365 (pcmd->cmdcode << 16) |
366 (pcmdpriv->cmd_seq << 24));
367 pcmdbuf += 2 ; /* 8 bytes aligment */
368 memcpy((u8 *)pcmdbuf, pcmd->parmbuf, pcmd->cmdsz);
369 while (check_cmd_fifo(padapter, wr_sz) == _FAIL) {
370 if ((padapter->bDriverStopped == true) ||
371 (padapter->bSurpriseRemoved == true))
372 break;
373 msleep(100);
374 continue;
375 }
376 if (blnPending)
377 wr_sz += 8; /* Append 8 bytes */
378 r8712_write_mem(padapter, RTL8712_DMA_H2CCMD, wr_sz,
379 (u8 *)pdesc);
380 pcmdpriv->cmd_seq++;
381 if (pcmd->cmdcode == GEN_CMD_CODE(_CreateBss)) {
382 pcmd->res = H2C_SUCCESS;
383 pcmd_callback = cmd_callback[pcmd->
384 cmdcode].callback;
385 if (pcmd_callback)
386 pcmd_callback(padapter, pcmd);
387 continue;
388 }
389 if (pcmd->cmdcode == GEN_CMD_CODE(_SetPwrMode)) {
390 if (padapter->pwrctrlpriv.bSleep) {
391 _enter_pwrlock(&(padapter->
392 pwrctrlpriv.lock));
393 r8712_set_rpwm(padapter, PS_STATE_S2);
394 up(&padapter->pwrctrlpriv.lock);
395 }
396 }
397 r8712_free_cmd_obj(pcmd);
398 if (_queue_empty(&(pcmdpriv->cmd_queue))) {
399 r8712_unregister_cmd_alive(padapter);
400 continue;
401 } else
402 goto _next;
403 } else
404 goto _next;
405 flush_signals_thread();
406 }
407 /* free all cmd_obj resources */
408 do {
409 pcmd = r8712_dequeue_cmd(&(pcmdpriv->cmd_queue));
410 if (pcmd == NULL)
411 break;
412 r8712_free_cmd_obj(pcmd);
413 } while (1);
414 up(&pcmdpriv->terminate_cmdthread_sema);
415 thread_exit();
416 }
417
418 void r8712_event_handle(struct _adapter *padapter, uint *peventbuf)
419 {
420 u8 evt_code, evt_seq;
421 u16 evt_sz;
422 void (*event_callback)(struct _adapter *dev, u8 *pbuf);
423 struct evt_priv *pevt_priv = &(padapter->evtpriv);
424
425 if (peventbuf == NULL)
426 goto _abort_event_;
427 evt_sz = (u16)(le32_to_cpu(*peventbuf) & 0xffff);
428 evt_seq = (u8)((le32_to_cpu(*peventbuf) >> 24) & 0x7f);
429 evt_code = (u8)((le32_to_cpu(*peventbuf) >> 16) & 0xff);
430 /* checking event sequence... */
431 if ((evt_seq & 0x7f) != pevt_priv->event_seq) {
432 pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
433 goto _abort_event_;
434 }
435 /* checking if event code is valid */
436 if (evt_code >= MAX_C2HEVT) {
437 pevt_priv->event_seq = ((evt_seq+1) & 0x7f);
438 goto _abort_event_;
439 } else if ((evt_code == GEN_EVT_CODE(_Survey)) &&
440 (evt_sz > sizeof(struct wlan_bssid_ex))) {
441 pevt_priv->event_seq = ((evt_seq+1)&0x7f);
442 goto _abort_event_;
443 }
444 /* checking if event size match the event parm size */
445 if ((wlanevents[evt_code].parmsize) &&
446 (wlanevents[evt_code].parmsize != evt_sz)) {
447 pevt_priv->event_seq = ((evt_seq+1)&0x7f);
448 goto _abort_event_;
449 } else if ((evt_sz == 0) && (evt_code != GEN_EVT_CODE(_WPS_PBC))) {
450 pevt_priv->event_seq = ((evt_seq+1)&0x7f);
451 goto _abort_event_;
452 }
453 pevt_priv->event_seq++; /* update evt_seq */
454 if (pevt_priv->event_seq > 127)
455 pevt_priv->event_seq = 0;
456 peventbuf = peventbuf + 2; /* move to event content, 8 bytes aligment */
457 if (peventbuf) {
458 event_callback = wlanevents[evt_code].event_callback;
459 if (event_callback)
460 event_callback(padapter, (u8 *)peventbuf);
461 }
462 pevt_priv->evt_done_cnt++;
463 _abort_event_:
464 return;
465 }
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