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2865d42c LF |
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 | ||
359140aa AB |
31 | #include <linux/compiler.h> |
32 | #include <linux/kernel.h> | |
33 | #include <linux/errno.h> | |
359140aa AB |
34 | #include <linux/slab.h> |
35 | #include <linux/module.h> | |
36 | #include <linux/kref.h> | |
37 | #include <linux/netdevice.h> | |
38 | #include <linux/skbuff.h> | |
39 | #include <linux/usb.h> | |
40 | #include <linux/usb/ch9.h> | |
41 | #include <linux/circ_buf.h> | |
42 | #include <linux/uaccess.h> | |
43 | #include <asm/byteorder.h> | |
44 | #include <linux/atomic.h> | |
45 | #include <linux/semaphore.h> | |
46 | #include <linux/rtnetlink.h> | |
47 | ||
2865d42c LF |
48 | #include "osdep_service.h" |
49 | #include "drv_types.h" | |
50 | #include "recv_osdep.h" | |
51 | #include "mlme_osdep.h" | |
2865d42c LF |
52 | #include "rtl871x_ioctl_set.h" |
53 | ||
54 | static void check_hw_pbc(struct _adapter *padapter) | |
55 | { | |
56 | u8 tmp1byte; | |
57 | ||
58 | r8712_write8(padapter, MAC_PINMUX_CTRL, (GPIOMUX_EN | GPIOSEL_GPIO)); | |
59 | tmp1byte = r8712_read8(padapter, GPIO_IO_SEL); | |
60 | tmp1byte &= ~(HAL_8192S_HW_GPIO_WPS_BIT); | |
61 | r8712_write8(padapter, GPIO_IO_SEL, tmp1byte); | |
62 | tmp1byte = r8712_read8(padapter, GPIO_CTRL); | |
63 | if (tmp1byte == 0xff) | |
77e73e8c | 64 | return; |
2865d42c LF |
65 | if (tmp1byte&HAL_8192S_HW_GPIO_WPS_BIT) { |
66 | /* Here we only set bPbcPressed to true | |
67 | * After trigger PBC, the variable will be set to false */ | |
68 | DBG_8712("CheckPbcGPIO - PBC is pressed !!!!\n"); | |
69 | /* 0 is the default value and it means the application monitors | |
be10ac2b | 70 | * the HW PBC doesn't provide its pid to driver. */ |
2865d42c LF |
71 | if (padapter->pid == 0) |
72 | return; | |
73 | kill_pid(find_vpid(padapter->pid), SIGUSR1, 1); | |
74 | } | |
75 | } | |
76 | ||
77 | /* query rx phy status from fw. | |
78 | * Adhoc mode: beacon. | |
79 | * Infrastructure mode: beacon , data. */ | |
80 | static void query_fw_rx_phy_status(struct _adapter *padapter) | |
81 | { | |
82 | u32 val32 = 0; | |
83 | int pollingcnts = 50; | |
84 | ||
85 | if (check_fwstate(&padapter->mlmepriv, _FW_LINKED) == true) { | |
86 | r8712_write32(padapter, IOCMD_CTRL_REG, 0xf4000001); | |
87 | msleep(100); | |
88 | /* Wait FW complete IO Cmd */ | |
89 | while ((r8712_read32(padapter, IOCMD_CTRL_REG)) && | |
90 | (pollingcnts > 0)) { | |
91 | pollingcnts--; | |
92 | msleep(20); | |
93 | } | |
94 | if (pollingcnts != 0) | |
95 | val32 = r8712_read32(padapter, IOCMD_DATA_REG); | |
96 | else /* time out */ | |
97 | val32 = 0; | |
ae52e527 | 98 | val32 >>= 4; |
2865d42c LF |
99 | padapter->recvpriv.fw_rssi = |
100 | (u8)r8712_signal_scale_mapping(val32); | |
101 | } | |
102 | } | |
103 | ||
104 | /* check mlme, hw, phy, or dynamic algorithm status. */ | |
105 | static void StatusWatchdogCallback(struct _adapter *padapter) | |
106 | { | |
107 | check_hw_pbc(padapter); | |
108 | query_fw_rx_phy_status(padapter); | |
109 | } | |
110 | ||
111 | static void r871x_internal_cmd_hdl(struct _adapter *padapter, u8 *pbuf) | |
112 | { | |
113 | struct drvint_cmd_parm *pdrvcmd; | |
114 | ||
115 | if (!pbuf) | |
116 | return; | |
117 | pdrvcmd = (struct drvint_cmd_parm *)pbuf; | |
118 | switch (pdrvcmd->i_cid) { | |
119 | case WDG_WK_CID: | |
120 | StatusWatchdogCallback(padapter); | |
121 | break; | |
122 | default: | |
123 | break; | |
124 | } | |
125 | kfree(pdrvcmd->pbuf); | |
126 | } | |
127 | ||
128 | static u8 read_macreg_hdl(struct _adapter *padapter, u8 *pbuf) | |
129 | { | |
130 | void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); | |
131 | struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; | |
132 | ||
133 | /* invoke cmd->callback function */ | |
134 | pcmd_callback = cmd_callback[pcmd->cmdcode].callback; | |
135 | if (pcmd_callback == NULL) | |
136 | r8712_free_cmd_obj(pcmd); | |
137 | else | |
138 | pcmd_callback(padapter, pcmd); | |
139 | return H2C_SUCCESS; | |
140 | } | |
141 | ||
142 | static u8 write_macreg_hdl(struct _adapter *padapter, u8 *pbuf) | |
143 | { | |
144 | void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); | |
145 | struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; | |
146 | ||
147 | /* invoke cmd->callback function */ | |
148 | pcmd_callback = cmd_callback[pcmd->cmdcode].callback; | |
149 | if (pcmd_callback == NULL) | |
150 | r8712_free_cmd_obj(pcmd); | |
151 | else | |
152 | pcmd_callback(padapter, pcmd); | |
153 | return H2C_SUCCESS; | |
154 | } | |
155 | ||
156 | static u8 read_bbreg_hdl(struct _adapter *padapter, u8 *pbuf) | |
157 | { | |
158 | u32 val; | |
159 | void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); | |
2865d42c LF |
160 | struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; |
161 | ||
2865d42c LF |
162 | if (pcmd->rsp && pcmd->rspsz > 0) |
163 | memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz); | |
164 | pcmd_callback = cmd_callback[pcmd->cmdcode].callback; | |
165 | if (pcmd_callback == NULL) | |
166 | r8712_free_cmd_obj(pcmd); | |
167 | else | |
168 | pcmd_callback(padapter, pcmd); | |
169 | return H2C_SUCCESS; | |
170 | } | |
171 | ||
172 | static u8 write_bbreg_hdl(struct _adapter *padapter, u8 *pbuf) | |
173 | { | |
174 | void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); | |
2865d42c LF |
175 | struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; |
176 | ||
2865d42c LF |
177 | pcmd_callback = cmd_callback[pcmd->cmdcode].callback; |
178 | if (pcmd_callback == NULL) | |
179 | r8712_free_cmd_obj(pcmd); | |
180 | else | |
181 | pcmd_callback(padapter, pcmd); | |
182 | return H2C_SUCCESS; | |
183 | } | |
184 | ||
185 | static u8 read_rfreg_hdl(struct _adapter *padapter, u8 *pbuf) | |
186 | { | |
187 | u32 val; | |
188 | void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); | |
2865d42c LF |
189 | struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; |
190 | ||
2865d42c LF |
191 | if (pcmd->rsp && pcmd->rspsz > 0) |
192 | memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz); | |
193 | pcmd_callback = cmd_callback[pcmd->cmdcode].callback; | |
194 | if (pcmd_callback == NULL) | |
195 | r8712_free_cmd_obj(pcmd); | |
196 | else | |
197 | pcmd_callback(padapter, pcmd); | |
198 | return H2C_SUCCESS; | |
199 | } | |
200 | ||
201 | static u8 write_rfreg_hdl(struct _adapter *padapter, u8 *pbuf) | |
202 | { | |
203 | void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); | |
2865d42c LF |
204 | struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; |
205 | ||
2865d42c LF |
206 | pcmd_callback = cmd_callback[pcmd->cmdcode].callback; |
207 | if (pcmd_callback == NULL) | |
208 | r8712_free_cmd_obj(pcmd); | |
209 | else | |
210 | pcmd_callback(padapter, pcmd); | |
211 | return H2C_SUCCESS; | |
212 | } | |
213 | ||
214 | static u8 sys_suspend_hdl(struct _adapter *padapter, u8 *pbuf) | |
215 | { | |
216 | struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; | |
2865d42c | 217 | |
2865d42c LF |
218 | r8712_free_cmd_obj(pcmd); |
219 | return H2C_SUCCESS; | |
220 | } | |
221 | ||
222 | static struct cmd_obj *cmd_hdl_filter(struct _adapter *padapter, | |
223 | struct cmd_obj *pcmd) | |
224 | { | |
225 | struct cmd_obj *pcmd_r; | |
226 | ||
227 | if (pcmd == NULL) | |
228 | return pcmd; | |
229 | pcmd_r = NULL; | |
230 | ||
231 | switch (pcmd->cmdcode) { | |
232 | case GEN_CMD_CODE(_Read_MACREG): | |
233 | read_macreg_hdl(padapter, (u8 *)pcmd); | |
234 | pcmd_r = pcmd; | |
235 | break; | |
236 | case GEN_CMD_CODE(_Write_MACREG): | |
237 | write_macreg_hdl(padapter, (u8 *)pcmd); | |
238 | pcmd_r = pcmd; | |
239 | break; | |
240 | case GEN_CMD_CODE(_Read_BBREG): | |
241 | read_bbreg_hdl(padapter, (u8 *)pcmd); | |
242 | break; | |
243 | case GEN_CMD_CODE(_Write_BBREG): | |
244 | write_bbreg_hdl(padapter, (u8 *)pcmd); | |
245 | break; | |
246 | case GEN_CMD_CODE(_Read_RFREG): | |
247 | read_rfreg_hdl(padapter, (u8 *)pcmd); | |
248 | break; | |
249 | case GEN_CMD_CODE(_Write_RFREG): | |
250 | write_rfreg_hdl(padapter, (u8 *)pcmd); | |
251 | break; | |
252 | case GEN_CMD_CODE(_SetUsbSuspend): | |
253 | sys_suspend_hdl(padapter, (u8 *)pcmd); | |
254 | break; | |
255 | case GEN_CMD_CODE(_JoinBss): | |
256 | r8712_joinbss_reset(padapter); | |
257 | /* Before set JoinBss_CMD to FW, driver must ensure FW is in | |
258 | * PS_MODE_ACTIVE. Directly write rpwm to radio on and assign | |
259 | * new pwr_mode to Driver, instead of use workitem to change | |
260 | * state. */ | |
261 | if (padapter->pwrctrlpriv.pwr_mode > PS_MODE_ACTIVE) { | |
262 | padapter->pwrctrlpriv.pwr_mode = PS_MODE_ACTIVE; | |
263 | _enter_pwrlock(&(padapter->pwrctrlpriv.lock)); | |
264 | r8712_set_rpwm(padapter, PS_STATE_S4); | |
265 | up(&(padapter->pwrctrlpriv.lock)); | |
266 | } | |
267 | pcmd_r = pcmd; | |
268 | break; | |
269 | case _DRV_INT_CMD_: | |
270 | r871x_internal_cmd_hdl(padapter, pcmd->parmbuf); | |
271 | r8712_free_cmd_obj(pcmd); | |
272 | pcmd_r = NULL; | |
273 | break; | |
274 | default: | |
275 | pcmd_r = pcmd; | |
276 | break; | |
277 | } | |
278 | return pcmd_r; /* if returning pcmd_r == NULL, pcmd must be free. */ | |
279 | } | |
280 | ||
281 | static u8 check_cmd_fifo(struct _adapter *padapter, uint sz) | |
282 | { | |
8ffca9ea | 283 | return _SUCCESS; |
2865d42c LF |
284 | } |
285 | ||
286 | u8 r8712_fw_cmd(struct _adapter *pAdapter, u32 cmd) | |
287 | { | |
288 | int pollingcnts = 50; | |
289 | ||
290 | r8712_write32(pAdapter, IOCMD_CTRL_REG, cmd); | |
291 | msleep(100); | |
292 | while ((0 != r8712_read32(pAdapter, IOCMD_CTRL_REG)) && | |
293 | (pollingcnts > 0)) { | |
294 | pollingcnts--; | |
295 | msleep(20); | |
296 | } | |
297 | if (pollingcnts == 0) | |
298 | return false; | |
299 | return true; | |
300 | } | |
301 | ||
302 | void r8712_fw_cmd_data(struct _adapter *pAdapter, u32 *value, u8 flag) | |
303 | { | |
304 | if (flag == 0) /* set */ | |
305 | r8712_write32(pAdapter, IOCMD_DATA_REG, *value); | |
306 | else /* query */ | |
307 | *value = r8712_read32(pAdapter, IOCMD_DATA_REG); | |
308 | } | |
309 | ||
310 | int r8712_cmd_thread(void *context) | |
311 | { | |
312 | struct cmd_obj *pcmd; | |
e29d3ebc | 313 | unsigned int cmdsz, wr_sz, *pcmdbuf; |
2865d42c LF |
314 | struct tx_desc *pdesc; |
315 | void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); | |
316 | struct _adapter *padapter = (struct _adapter *)context; | |
317 | struct cmd_priv *pcmdpriv = &(padapter->cmdpriv); | |
318 | ||
fee51243 | 319 | allow_signal(SIGTERM); |
2865d42c LF |
320 | while (1) { |
321 | if ((_down_sema(&(pcmdpriv->cmd_queue_sema))) == _FAIL) | |
322 | break; | |
323 | if ((padapter->bDriverStopped == true) || | |
324 | (padapter->bSurpriseRemoved == true)) | |
325 | break; | |
326 | if (r8712_register_cmd_alive(padapter) != _SUCCESS) | |
327 | continue; | |
328 | _next: | |
329 | pcmd = r8712_dequeue_cmd(&(pcmdpriv->cmd_queue)); | |
330 | if (!(pcmd)) { | |
331 | r8712_unregister_cmd_alive(padapter); | |
332 | continue; | |
333 | } | |
334 | pcmdbuf = (unsigned int *)pcmdpriv->cmd_buf; | |
2865d42c LF |
335 | pdesc = (struct tx_desc *)pcmdbuf; |
336 | memset(pdesc, 0, TXDESC_SIZE); | |
337 | pcmd = cmd_hdl_filter(padapter, pcmd); | |
338 | if (pcmd) { /* if pcmd != NULL, cmd will be handled by f/w */ | |
339 | struct dvobj_priv *pdvobj = (struct dvobj_priv *) | |
340 | &padapter->dvobjpriv; | |
341 | u8 blnPending = 0; | |
02a29d2d | 342 | |
2865d42c | 343 | pcmdpriv->cmd_issued_cnt++; |
d913e54e | 344 | cmdsz = round_up(pcmd->cmdsz, 8); |
2865d42c LF |
345 | wr_sz = TXDESC_SIZE + 8 + cmdsz; |
346 | pdesc->txdw0 |= cpu_to_le32((wr_sz-TXDESC_SIZE) & | |
347 | 0x0000ffff); | |
348 | if (pdvobj->ishighspeed) { | |
349 | if ((wr_sz % 512) == 0) | |
350 | blnPending = 1; | |
351 | } else { | |
352 | if ((wr_sz % 64) == 0) | |
353 | blnPending = 1; | |
354 | } | |
355 | if (blnPending) /* 32 bytes for TX Desc - 8 offset */ | |
356 | pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE + | |
357 | OFFSET_SZ + 8) << OFFSET_SHT) & | |
358 | 0x00ff0000); | |
359 | else { | |
360 | pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE + | |
361 | OFFSET_SZ) << | |
362 | OFFSET_SHT) & | |
363 | 0x00ff0000); | |
364 | } | |
365 | pdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG); | |
366 | pdesc->txdw1 |= cpu_to_le32((0x13 << QSEL_SHT) & | |
367 | 0x00001f00); | |
368 | pcmdbuf += (TXDESC_SIZE >> 2); | |
369 | *pcmdbuf = cpu_to_le32((cmdsz & 0x0000ffff) | | |
370 | (pcmd->cmdcode << 16) | | |
371 | (pcmdpriv->cmd_seq << 24)); | |
77e73e8c | 372 | pcmdbuf += 2; /* 8 bytes alignment */ |
2865d42c LF |
373 | memcpy((u8 *)pcmdbuf, pcmd->parmbuf, pcmd->cmdsz); |
374 | while (check_cmd_fifo(padapter, wr_sz) == _FAIL) { | |
375 | if ((padapter->bDriverStopped == true) || | |
376 | (padapter->bSurpriseRemoved == true)) | |
377 | break; | |
378 | msleep(100); | |
379 | continue; | |
380 | } | |
381 | if (blnPending) | |
382 | wr_sz += 8; /* Append 8 bytes */ | |
383 | r8712_write_mem(padapter, RTL8712_DMA_H2CCMD, wr_sz, | |
384 | (u8 *)pdesc); | |
385 | pcmdpriv->cmd_seq++; | |
386 | if (pcmd->cmdcode == GEN_CMD_CODE(_CreateBss)) { | |
387 | pcmd->res = H2C_SUCCESS; | |
388 | pcmd_callback = cmd_callback[pcmd-> | |
389 | cmdcode].callback; | |
390 | if (pcmd_callback) | |
391 | pcmd_callback(padapter, pcmd); | |
392 | continue; | |
393 | } | |
394 | if (pcmd->cmdcode == GEN_CMD_CODE(_SetPwrMode)) { | |
395 | if (padapter->pwrctrlpriv.bSleep) { | |
396 | _enter_pwrlock(&(padapter-> | |
397 | pwrctrlpriv.lock)); | |
398 | r8712_set_rpwm(padapter, PS_STATE_S2); | |
399 | up(&padapter->pwrctrlpriv.lock); | |
400 | } | |
401 | } | |
402 | r8712_free_cmd_obj(pcmd); | |
df353f61 | 403 | if (list_empty(&pcmdpriv->cmd_queue.queue)) { |
2865d42c LF |
404 | r8712_unregister_cmd_alive(padapter); |
405 | continue; | |
406 | } else | |
407 | goto _next; | |
408 | } else | |
409 | goto _next; | |
410 | flush_signals_thread(); | |
411 | } | |
412 | /* free all cmd_obj resources */ | |
413 | do { | |
414 | pcmd = r8712_dequeue_cmd(&(pcmdpriv->cmd_queue)); | |
415 | if (pcmd == NULL) | |
416 | break; | |
417 | r8712_free_cmd_obj(pcmd); | |
418 | } while (1); | |
419 | up(&pcmdpriv->terminate_cmdthread_sema); | |
420 | thread_exit(); | |
421 | } | |
422 | ||
423 | void r8712_event_handle(struct _adapter *padapter, uint *peventbuf) | |
424 | { | |
425 | u8 evt_code, evt_seq; | |
426 | u16 evt_sz; | |
427 | void (*event_callback)(struct _adapter *dev, u8 *pbuf); | |
428 | struct evt_priv *pevt_priv = &(padapter->evtpriv); | |
429 | ||
430 | if (peventbuf == NULL) | |
431 | goto _abort_event_; | |
432 | evt_sz = (u16)(le32_to_cpu(*peventbuf) & 0xffff); | |
433 | evt_seq = (u8)((le32_to_cpu(*peventbuf) >> 24) & 0x7f); | |
434 | evt_code = (u8)((le32_to_cpu(*peventbuf) >> 16) & 0xff); | |
435 | /* checking event sequence... */ | |
436 | if ((evt_seq & 0x7f) != pevt_priv->event_seq) { | |
437 | pevt_priv->event_seq = ((evt_seq + 1) & 0x7f); | |
438 | goto _abort_event_; | |
439 | } | |
440 | /* checking if event code is valid */ | |
441 | if (evt_code >= MAX_C2HEVT) { | |
442 | pevt_priv->event_seq = ((evt_seq+1) & 0x7f); | |
443 | goto _abort_event_; | |
444 | } else if ((evt_code == GEN_EVT_CODE(_Survey)) && | |
445 | (evt_sz > sizeof(struct wlan_bssid_ex))) { | |
446 | pevt_priv->event_seq = ((evt_seq+1)&0x7f); | |
447 | goto _abort_event_; | |
448 | } | |
449 | /* checking if event size match the event parm size */ | |
450 | if ((wlanevents[evt_code].parmsize) && | |
451 | (wlanevents[evt_code].parmsize != evt_sz)) { | |
452 | pevt_priv->event_seq = ((evt_seq+1)&0x7f); | |
453 | goto _abort_event_; | |
454 | } else if ((evt_sz == 0) && (evt_code != GEN_EVT_CODE(_WPS_PBC))) { | |
455 | pevt_priv->event_seq = ((evt_seq+1)&0x7f); | |
456 | goto _abort_event_; | |
457 | } | |
458 | pevt_priv->event_seq++; /* update evt_seq */ | |
459 | if (pevt_priv->event_seq > 127) | |
460 | pevt_priv->event_seq = 0; | |
57b6686e TP |
461 | /* move to event content, 8 bytes alignment */ |
462 | peventbuf = peventbuf + 2; | |
a376932a DC |
463 | event_callback = wlanevents[evt_code].event_callback; |
464 | if (event_callback) | |
465 | event_callback(padapter, (u8 *)peventbuf); | |
2865d42c LF |
466 | pevt_priv->evt_done_cnt++; |
467 | _abort_event_: | |
468 | return; | |
469 | } |