drivers/staging/rtl8712/rtl8712_cmd.c

   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 }