1 /******************************************************************************
4 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
5 * Linux device driver for RTL8192SU
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.
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
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
20 * Modifications for inclusion into the Linux staging tree are
21 * Copyright(c) 2010 Larry Finger. All rights reserved.
23 * Contact information:
24 * WLAN FAE <wlanfae@realtek.com>.
25 * Larry Finger <Larry.Finger@lwfinger.net>
27 ******************************************************************************/
29 #define _RTL8712_CMD_C_
31 #include <linux/compiler.h>
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/slab.h>
35 #include <linux/sched/signal.h>
36 #include <linux/module.h>
37 #include <linux/kref.h>
38 #include <linux/netdevice.h>
39 #include <linux/skbuff.h>
40 #include <linux/usb.h>
41 #include <linux/usb/ch9.h>
42 #include <linux/circ_buf.h>
43 #include <linux/uaccess.h>
44 #include <asm/byteorder.h>
45 #include <linux/atomic.h>
46 #include <linux/semaphore.h>
47 #include <linux/rtnetlink.h>
49 #include "osdep_service.h"
50 #include "drv_types.h"
51 #include "recv_osdep.h"
52 #include "mlme_osdep.h"
53 #include "rtl871x_ioctl_set.h"
55 static void check_hw_pbc(struct _adapter *padapter)
59 r8712_write8(padapter, MAC_PINMUX_CTRL, (GPIOMUX_EN | GPIOSEL_GPIO));
60 tmp1byte = r8712_read8(padapter, GPIO_IO_SEL);
61 tmp1byte &= ~(HAL_8192S_HW_GPIO_WPS_BIT);
62 r8712_write8(padapter, GPIO_IO_SEL, tmp1byte);
63 tmp1byte = r8712_read8(padapter, GPIO_CTRL);
66 if (tmp1byte & HAL_8192S_HW_GPIO_WPS_BIT) {
67 /* Here we only set bPbcPressed to true
68 * After trigger PBC, the variable will be set to false
70 DBG_8712("CheckPbcGPIO - PBC is pressed !!!!\n");
71 /* 0 is the default value and it means the application monitors
72 * the HW PBC doesn't provide its pid to driver.
74 if (padapter->pid == 0)
76 kill_pid(find_vpid(padapter->pid), SIGUSR1, 1);
80 /* query rx phy status from fw.
82 * Infrastructure mode: beacon , data.
84 static void query_fw_rx_phy_status(struct _adapter *padapter)
89 if (check_fwstate(&padapter->mlmepriv, _FW_LINKED)) {
90 r8712_write32(padapter, IOCMD_CTRL_REG, 0xf4000001);
92 /* Wait FW complete IO Cmd */
93 while ((r8712_read32(padapter, IOCMD_CTRL_REG)) &&
99 val32 = r8712_read32(padapter, IOCMD_DATA_REG);
103 padapter->recvpriv.fw_rssi =
104 (u8)r8712_signal_scale_mapping(val32);
108 /* check mlme, hw, phy, or dynamic algorithm status. */
109 static void StatusWatchdogCallback(struct _adapter *padapter)
111 check_hw_pbc(padapter);
112 query_fw_rx_phy_status(padapter);
115 static void r871x_internal_cmd_hdl(struct _adapter *padapter, u8 *pbuf)
117 struct drvint_cmd_parm *pdrvcmd;
121 pdrvcmd = (struct drvint_cmd_parm *)pbuf;
122 switch (pdrvcmd->i_cid) {
124 StatusWatchdogCallback(padapter);
129 kfree(pdrvcmd->pbuf);
132 static u8 read_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
134 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
136 r8712_free_cmd_obj(pcmd);
140 static u8 write_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
142 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
143 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
145 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
147 r8712_free_cmd_obj(pcmd);
149 pcmd_callback(padapter, pcmd);
153 static u8 read_rfreg_hdl(struct _adapter *padapter, u8 *pbuf)
156 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
157 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
159 if (pcmd->rsp && pcmd->rspsz > 0)
160 memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz);
161 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
163 r8712_free_cmd_obj(pcmd);
165 pcmd_callback(padapter, pcmd);
169 static u8 write_rfreg_hdl(struct _adapter *padapter, u8 *pbuf)
171 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
172 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
174 pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
176 r8712_free_cmd_obj(pcmd);
178 pcmd_callback(padapter, pcmd);
182 static u8 sys_suspend_hdl(struct _adapter *padapter, u8 *pbuf)
184 struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
186 r8712_free_cmd_obj(pcmd);
190 static struct cmd_obj *cmd_hdl_filter(struct _adapter *padapter,
191 struct cmd_obj *pcmd)
193 struct cmd_obj *pcmd_r;
199 switch (pcmd->cmdcode) {
200 case GEN_CMD_CODE(_Read_BBREG):
201 read_bbreg_hdl(padapter, (u8 *)pcmd);
203 case GEN_CMD_CODE(_Write_BBREG):
204 write_bbreg_hdl(padapter, (u8 *)pcmd);
206 case GEN_CMD_CODE(_Read_RFREG):
207 read_rfreg_hdl(padapter, (u8 *)pcmd);
209 case GEN_CMD_CODE(_Write_RFREG):
210 write_rfreg_hdl(padapter, (u8 *)pcmd);
212 case GEN_CMD_CODE(_SetUsbSuspend):
213 sys_suspend_hdl(padapter, (u8 *)pcmd);
215 case GEN_CMD_CODE(_JoinBss):
216 r8712_joinbss_reset(padapter);
217 /* Before set JoinBss_CMD to FW, driver must ensure FW is in
218 * PS_MODE_ACTIVE. Directly write rpwm to radio on and assign
219 * new pwr_mode to Driver, instead of use workitem to change
222 if (padapter->pwrctrlpriv.pwr_mode > PS_MODE_ACTIVE) {
223 padapter->pwrctrlpriv.pwr_mode = PS_MODE_ACTIVE;
224 mutex_lock(&padapter->pwrctrlpriv.mutex_lock);
225 r8712_set_rpwm(padapter, PS_STATE_S4);
226 mutex_unlock(&padapter->pwrctrlpriv.mutex_lock);
231 r871x_internal_cmd_hdl(padapter, pcmd->parmbuf);
232 r8712_free_cmd_obj(pcmd);
239 return pcmd_r; /* if returning pcmd_r == NULL, pcmd must be free. */
242 static u8 check_cmd_fifo(struct _adapter *padapter, uint sz)
247 u8 r8712_fw_cmd(struct _adapter *pAdapter, u32 cmd)
249 int pollingcnts = 50;
251 r8712_write32(pAdapter, IOCMD_CTRL_REG, cmd);
253 while ((r8712_read32(pAdapter, IOCMD_CTRL_REG != 0)) &&
258 if (pollingcnts == 0)
263 void r8712_fw_cmd_data(struct _adapter *pAdapter, u32 *value, u8 flag)
265 if (flag == 0) /* set */
266 r8712_write32(pAdapter, IOCMD_DATA_REG, *value);
268 *value = r8712_read32(pAdapter, IOCMD_DATA_REG);
271 int r8712_cmd_thread(void *context)
273 struct cmd_obj *pcmd;
274 unsigned int cmdsz, wr_sz;
276 struct tx_desc *pdesc;
277 void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
278 struct _adapter *padapter = context;
279 struct cmd_priv *pcmdpriv = &padapter->cmdpriv;
280 struct completion *cmd_queue_comp =
281 &pcmdpriv->cmd_queue_comp;
282 struct mutex *pwctrl_lock = &padapter->pwrctrlpriv.mutex_lock;
284 allow_signal(SIGTERM);
286 if (wait_for_completion_interruptible(cmd_queue_comp))
288 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
290 if (r8712_register_cmd_alive(padapter) != _SUCCESS)
293 pcmd = r8712_dequeue_cmd(&pcmdpriv->cmd_queue);
295 r8712_unregister_cmd_alive(padapter);
298 pcmdbuf = (__le32 *)pcmdpriv->cmd_buf;
299 pdesc = (struct tx_desc *)pcmdbuf;
300 memset(pdesc, 0, TXDESC_SIZE);
301 pcmd = cmd_hdl_filter(padapter, pcmd);
302 if (pcmd) { /* if pcmd != NULL, cmd will be handled by f/w */
303 struct dvobj_priv *pdvobj = &padapter->dvobjpriv;
305 u16 cmdcode = pcmd->cmdcode;
307 pcmdpriv->cmd_issued_cnt++;
308 cmdsz = round_up(pcmd->cmdsz, 8);
309 wr_sz = TXDESC_SIZE + 8 + cmdsz;
310 pdesc->txdw0 |= cpu_to_le32((wr_sz - TXDESC_SIZE) &
312 if (pdvobj->ishighspeed) {
313 if ((wr_sz % 512) == 0)
316 if ((wr_sz % 64) == 0)
319 if (blnPending) { /* 32 bytes for TX Desc - 8 offset */
320 pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE +
321 OFFSET_SZ + 8) << OFFSET_SHT) &
324 pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE +
329 pdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
330 pdesc->txdw1 |= cpu_to_le32((0x13 << QSEL_SHT) &
332 pcmdbuf += (TXDESC_SIZE >> 2);
333 *pcmdbuf = cpu_to_le32((cmdsz & 0x0000ffff) |
334 (pcmd->cmdcode << 16) |
335 (pcmdpriv->cmd_seq << 24));
336 pcmdbuf += 2; /* 8 bytes alignment */
337 memcpy((u8 *)pcmdbuf, pcmd->parmbuf, pcmd->cmdsz);
338 while (check_cmd_fifo(padapter, wr_sz) == _FAIL) {
339 if (padapter->bDriverStopped ||
340 padapter->bSurpriseRemoved)
346 wr_sz += 8; /* Append 8 bytes */
347 r8712_write_mem(padapter, RTL8712_DMA_H2CCMD, wr_sz,
350 if (cmdcode == GEN_CMD_CODE(_CreateBss)) {
351 pcmd->res = H2C_SUCCESS;
352 pcmd_callback = cmd_callback[cmdcode].callback;
354 pcmd_callback(padapter, pcmd);
357 if (cmdcode == GEN_CMD_CODE(_SetPwrMode)) {
358 if (padapter->pwrctrlpriv.bSleep) {
359 mutex_lock(pwctrl_lock);
360 r8712_set_rpwm(padapter, PS_STATE_S2);
361 mutex_unlock(pwctrl_lock);
364 r8712_free_cmd_obj(pcmd);
365 if (list_empty(&pcmdpriv->cmd_queue.queue)) {
366 r8712_unregister_cmd_alive(padapter);
374 flush_signals_thread();
376 /* free all cmd_obj resources */
378 pcmd = r8712_dequeue_cmd(&pcmdpriv->cmd_queue);
381 r8712_free_cmd_obj(pcmd);
383 complete(&pcmdpriv->terminate_cmdthread_comp);
387 void r8712_event_handle(struct _adapter *padapter, __le32 *peventbuf)
389 u8 evt_code, evt_seq;
391 void (*event_callback)(struct _adapter *dev, u8 *pbuf);
392 struct evt_priv *pevt_priv = &padapter->evtpriv;
396 evt_sz = (u16)(le32_to_cpu(*peventbuf) & 0xffff);
397 evt_seq = (u8)((le32_to_cpu(*peventbuf) >> 24) & 0x7f);
398 evt_code = (u8)((le32_to_cpu(*peventbuf) >> 16) & 0xff);
399 /* checking event sequence... */
400 if ((evt_seq & 0x7f) != pevt_priv->event_seq) {
401 pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
404 /* checking if event code is valid */
405 if (evt_code >= MAX_C2HEVT) {
406 pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
408 } else if ((evt_code == GEN_EVT_CODE(_Survey)) &&
409 (evt_sz > sizeof(struct wlan_bssid_ex))) {
410 pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
413 /* checking if event size match the event parm size */
414 if ((wlanevents[evt_code].parmsize) &&
415 (wlanevents[evt_code].parmsize != evt_sz)) {
416 pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
418 } else if ((evt_sz == 0) && (evt_code != GEN_EVT_CODE(_WPS_PBC))) {
419 pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
422 pevt_priv->event_seq++; /* update evt_seq */
423 if (pevt_priv->event_seq > 127)
424 pevt_priv->event_seq = 0;
425 /* move to event content, 8 bytes alignment */
426 peventbuf = peventbuf + 2;
427 event_callback = wlanevents[evt_code].event_callback;
429 event_callback(padapter, (u8 *)peventbuf);
430 pevt_priv->evt_done_cnt++;