drivers/staging/rtl8712/os_intfs.c

   1 /******************************************************************************
   2  * os_intfs.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 _OS_INTFS_C_
  30
  31 #include <linux/module.h>
  32 #include <linux/kthread.h>
  33 #include <linux/firmware.h>
  34 #include "osdep_service.h"
  35 #include "drv_types.h"
  36 #include "xmit_osdep.h"
  37 #include "recv_osdep.h"
  38 #include "rtl871x_ioctl.h"
  39 #include "usb_osintf.h"
  40
  41 MODULE_LICENSE("GPL");
  42 MODULE_DESCRIPTION("rtl871x wireless lan driver");
  43 MODULE_AUTHOR("Larry Finger");
  44
  45 static char ifname[IFNAMSIZ] = "wlan%d";
  46
  47 /* module param defaults */
  48 static int chip_version = RTL8712_2ndCUT;
  49 static int rfintfs = HWPI;
  50 static int lbkmode = RTL8712_AIR_TRX;
  51 static int hci = RTL8712_USB;
  52 static int ampdu_enable = 1;/*for enable tx_ampdu*/
  53
  54 /* The video_mode variable is for video mode.*/
  55 /* It may be specify when inserting module with video_mode=1 parameter.*/
  56 static int video_mode = 1;   /* enable video mode*/
  57
  58 /*Ndis802_11Infrastructure; infra, ad-hoc, auto*/
  59 static int network_mode = Ndis802_11IBSS;
  60 static int channel = 1;/*ad-hoc support requirement*/
  61 static int wireless_mode = WIRELESS_11BG;
  62 static int vrtl_carrier_sense = AUTO_VCS;
  63 static int vcs_type = RTS_CTS;
  64 static int frag_thresh = 2346;
  65 static int preamble = PREAMBLE_LONG;/*long, short, auto*/
  66 static int scan_mode = 1;/*active, passive*/
  67 static int adhoc_tx_pwr = 1;
  68 static int soft_ap;
  69 static int smart_ps = 1;
  70 static int power_mgnt = PS_MODE_ACTIVE;
  71 static int radio_enable = 1;
  72 static int long_retry_lmt = 7;
  73 static int short_retry_lmt = 7;
  74 static int busy_thresh = 40;
  75 static int ack_policy = NORMAL_ACK;
  76 static int mp_mode;
  77 static int software_encrypt;
  78 static int software_decrypt;
  79
  80 static int wmm_enable;/* default is set to disable the wmm.*/
  81 static int uapsd_enable;
  82 static int uapsd_max_sp = NO_LIMIT;
  83 static int uapsd_acbk_en;
  84 static int uapsd_acbe_en;
  85 static int uapsd_acvi_en;
  86 static int uapsd_acvo_en;
  87
  88 static int ht_enable = 1;
  89 static int cbw40_enable = 1;
  90 static int rf_config = RTL8712_RF_1T2R;  /* 1T2R*/
  91 static int low_power;
  92 /* mac address to use instead of the one stored in Efuse */
  93 char *r8712_initmac;
  94 static char *initmac;
  95 /* if wifi_test = 1, driver will disable the turbo mode and pass it to
  96  * firmware private.
  97  */
  98 static int wifi_test;
  99
 100 module_param_string(ifname, ifname, sizeof(ifname), S_IRUGO | S_IWUSR);
 101 module_param(wifi_test, int, 0644);
 102 module_param(initmac, charp, 0644);
 103 module_param(video_mode, int, 0644);
 104 module_param(chip_version, int, 0644);
 105 module_param(rfintfs, int, 0644);
 106 module_param(lbkmode, int, 0644);
 107 module_param(hci, int, 0644);
 108 module_param(network_mode, int, 0644);
 109 module_param(channel, int, 0644);
 110 module_param(mp_mode, int, 0644);
 111 module_param(wmm_enable, int, 0644);
 112 module_param(vrtl_carrier_sense, int, 0644);
 113 module_param(vcs_type, int, 0644);
 114 module_param(busy_thresh, int, 0644);
 115 module_param(ht_enable, int, 0644);
 116 module_param(cbw40_enable, int, 0644);
 117 module_param(ampdu_enable, int, 0644);
 118 module_param(rf_config, int, 0644);
 119 module_param(power_mgnt, int, 0644);
 120 module_param(low_power, int, 0644);
 121
 122 MODULE_PARM_DESC(ifname, " Net interface name, wlan%d=default");
 123 MODULE_PARM_DESC(initmac, "MAC-Address, default: use FUSE");
 124
 125 static int netdev_open(struct net_device *pnetdev);
 126 static int netdev_close(struct net_device *pnetdev);
 127
 128 static void loadparam(struct _adapter *padapter, struct  net_device *pnetdev)
 129 {
 130         struct registry_priv  *registry_par = &padapter->registrypriv;
 131
 132         registry_par->chip_version = (u8)chip_version;
 133         registry_par->rfintfs = (u8)rfintfs;
 134         registry_par->lbkmode = (u8)lbkmode;
 135         registry_par->hci = (u8)hci;
 136         registry_par->network_mode  = (u8)network_mode;
 137         memcpy(registry_par->ssid.Ssid, "ANY", 3);
 138         registry_par->ssid.SsidLength = 3;
 139         registry_par->channel = (u8)channel;
 140         registry_par->wireless_mode = (u8)wireless_mode;
 141         registry_par->vrtl_carrier_sense = (u8)vrtl_carrier_sense;
 142         registry_par->vcs_type = (u8)vcs_type;
 143         registry_par->frag_thresh = (u16)frag_thresh;
 144         registry_par->preamble = (u8)preamble;
 145         registry_par->scan_mode = (u8)scan_mode;
 146         registry_par->adhoc_tx_pwr = (u8)adhoc_tx_pwr;
 147         registry_par->soft_ap = (u8)soft_ap;
 148         registry_par->smart_ps = (u8)smart_ps;
 149         registry_par->power_mgnt = (u8)power_mgnt;
 150         registry_par->radio_enable = (u8)radio_enable;
 151         registry_par->long_retry_lmt = (u8)long_retry_lmt;
 152         registry_par->short_retry_lmt = (u8)short_retry_lmt;
 153         registry_par->busy_thresh = (u16)busy_thresh;
 154         registry_par->ack_policy = (u8)ack_policy;
 155         registry_par->mp_mode = (u8)mp_mode;
 156         registry_par->software_encrypt = (u8)software_encrypt;
 157         registry_par->software_decrypt = (u8)software_decrypt;
 158         /*UAPSD*/
 159         registry_par->wmm_enable = (u8)wmm_enable;
 160         registry_par->uapsd_enable = (u8)uapsd_enable;
 161         registry_par->uapsd_max_sp = (u8)uapsd_max_sp;
 162         registry_par->uapsd_acbk_en = (u8)uapsd_acbk_en;
 163         registry_par->uapsd_acbe_en = (u8)uapsd_acbe_en;
 164         registry_par->uapsd_acvi_en = (u8)uapsd_acvi_en;
 165         registry_par->uapsd_acvo_en = (u8)uapsd_acvo_en;
 166         registry_par->ht_enable = (u8)ht_enable;
 167         registry_par->cbw40_enable = (u8)cbw40_enable;
 168         registry_par->ampdu_enable = (u8)ampdu_enable;
 169         registry_par->rf_config = (u8)rf_config;
 170         registry_par->low_power = (u8)low_power;
 171         registry_par->wifi_test = (u8) wifi_test;
 172         r8712_initmac = initmac;
 173 }
 174
 175 static int r871x_net_set_mac_address(struct net_device *pnetdev, void *p)
 176 {
 177         struct _adapter *padapter = netdev_priv(pnetdev);
 178         struct sockaddr *addr = p;
 179
 180         if (!padapter->bup)
 181                 ether_addr_copy(pnetdev->dev_addr, addr->sa_data);
 182         return 0;
 183 }
 184
 185 static struct net_device_stats *r871x_net_get_stats(struct net_device *pnetdev)
 186 {
 187         struct _adapter *padapter = netdev_priv(pnetdev);
 188         struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
 189         struct recv_priv *precvpriv = &(padapter->recvpriv);
 190
 191         padapter->stats.tx_packets = pxmitpriv->tx_pkts;
 192         padapter->stats.rx_packets = precvpriv->rx_pkts;
 193         padapter->stats.tx_dropped = pxmitpriv->tx_drop;
 194         padapter->stats.rx_dropped = precvpriv->rx_drop;
 195         padapter->stats.tx_bytes = pxmitpriv->tx_bytes;
 196         padapter->stats.rx_bytes = precvpriv->rx_bytes;
 197         return &padapter->stats;
 198 }
 199
 200 static const struct net_device_ops rtl8712_netdev_ops = {
 201         .ndo_open = netdev_open,
 202         .ndo_stop = netdev_close,
 203         .ndo_start_xmit = r8712_xmit_entry,
 204         .ndo_set_mac_address = r871x_net_set_mac_address,
 205         .ndo_get_stats = r871x_net_get_stats,
 206         .ndo_do_ioctl = r871x_ioctl,
 207 };
 208
 209 struct net_device *r8712_init_netdev(void)
 210 {
 211         struct _adapter *padapter;
 212         struct net_device *pnetdev;
 213
 214         pnetdev = alloc_etherdev(sizeof(struct _adapter));
 215         if (!pnetdev)
 216                 return NULL;
 217         if (dev_alloc_name(pnetdev, ifname) < 0) {
 218                 strcpy(ifname, "wlan%d");
 219                 dev_alloc_name(pnetdev, ifname);
 220         }
 221         padapter = netdev_priv(pnetdev);
 222         padapter->pnetdev = pnetdev;
 223         pr_info("r8712u: register rtl8712_netdev_ops to netdev_ops\n");
 224         pnetdev->netdev_ops = &rtl8712_netdev_ops;
 225         pnetdev->watchdog_timeo = HZ; /* 1 second timeout */
 226         pnetdev->wireless_handlers = (struct iw_handler_def *)
 227                                      &r871x_handlers_def;
 228         loadparam(padapter, pnetdev);
 229         netif_carrier_off(pnetdev);
 230         padapter->pid = 0;  /* Initial the PID value used for HW PBC.*/
 231         return pnetdev;
 232 }
 233
 234 static u32 start_drv_threads(struct _adapter *padapter)
 235 {
 236         padapter->cmdThread = kthread_run(r8712_cmd_thread, padapter, "%s",
 237                               padapter->pnetdev->name);
 238         if (IS_ERR(padapter->cmdThread))
 239                 return _FAIL;
 240         return _SUCCESS;
 241 }
 242
 243 void r8712_stop_drv_threads(struct _adapter *padapter)
 244 {
 245         /*Below is to terminate r8712_cmd_thread & event_thread...*/
 246         up(&padapter->cmdpriv.cmd_queue_sema);
 247         if (padapter->cmdThread)
 248                 _down_sema(&padapter->cmdpriv.terminate_cmdthread_sema);
 249         padapter->cmdpriv.cmd_seq = 1;
 250 }
 251
 252 static void start_drv_timers(struct _adapter *padapter)
 253 {
 254         mod_timer(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
 255                   jiffies + msecs_to_jiffies(5000));
 256         mod_timer(&padapter->mlmepriv.wdg_timer,
 257                   jiffies + msecs_to_jiffies(2000));
 258 }
 259
 260 void r8712_stop_drv_timers(struct _adapter *padapter)
 261 {
 262         del_timer_sync(&padapter->mlmepriv.assoc_timer);
 263         del_timer_sync(&padapter->securitypriv.tkip_timer);
 264         del_timer_sync(&padapter->mlmepriv.scan_to_timer);
 265         del_timer_sync(&padapter->mlmepriv.dhcp_timer);
 266         del_timer_sync(&padapter->mlmepriv.wdg_timer);
 267         del_timer_sync(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer);
 268 }
 269
 270 static u8 init_default_value(struct _adapter *padapter)
 271 {
 272         u8 ret  = _SUCCESS;
 273         struct registry_priv *pregistrypriv = &padapter->registrypriv;
 274         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 275         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 276         struct security_priv *psecuritypriv = &padapter->securitypriv;
 277
 278         /*xmit_priv*/
 279         pxmitpriv->vcs_setting = pregistrypriv->vrtl_carrier_sense;
 280         pxmitpriv->vcs = pregistrypriv->vcs_type;
 281         pxmitpriv->vcs_type = pregistrypriv->vcs_type;
 282         pxmitpriv->rts_thresh = pregistrypriv->rts_thresh;
 283         pxmitpriv->frag_len = pregistrypriv->frag_thresh;
 284         /* mlme_priv */
 285         /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
 286         pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
 287         /*ht_priv*/
 288         {
 289                 int i;
 290                 struct ht_priv   *phtpriv = &pmlmepriv->htpriv;
 291
 292                 phtpriv->ampdu_enable = false;/*set to disabled*/
 293                 for (i = 0; i < 16; i++)
 294                         phtpriv->baddbareq_issued[i] = false;
 295         }
 296         /*security_priv*/
 297         psecuritypriv->sw_encrypt = pregistrypriv->software_encrypt;
 298         psecuritypriv->sw_decrypt = pregistrypriv->software_decrypt;
 299         psecuritypriv->binstallGrpkey = _FAIL;
 300         /*pwrctrl_priv*/
 301         /*registry_priv*/
 302         r8712_init_registrypriv_dev_network(padapter);
 303         r8712_update_registrypriv_dev_network(padapter);
 304         /*misc.*/
 305         return ret;
 306 }
 307
 308 u8 r8712_init_drv_sw(struct _adapter *padapter)
 309 {
 310         if ((r8712_init_cmd_priv(&padapter->cmdpriv)) == _FAIL)
 311                 return _FAIL;
 312         padapter->cmdpriv.padapter = padapter;
 313         if ((r8712_init_evt_priv(&padapter->evtpriv)) == _FAIL)
 314                 return _FAIL;
 315         if (r8712_init_mlme_priv(padapter) == _FAIL)
 316                 return _FAIL;
 317         _r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
 318         _r8712_init_recv_priv(&padapter->recvpriv, padapter);
 319         memset((unsigned char *)&padapter->securitypriv, 0,
 320                sizeof(struct security_priv));
 321         setup_timer(&padapter->securitypriv.tkip_timer,
 322                     r8712_use_tkipkey_handler, (unsigned long)padapter);
 323         _r8712_init_sta_priv(&padapter->stapriv);
 324         padapter->stapriv.padapter = padapter;
 325         r8712_init_bcmc_stainfo(padapter);
 326         r8712_init_pwrctrl_priv(padapter);
 327         mp871xinit(padapter);
 328         if (init_default_value(padapter) != _SUCCESS)
 329                 return _FAIL;
 330         r8712_InitSwLeds(padapter);
 331         return _SUCCESS;
 332 }
 333
 334 u8 r8712_free_drv_sw(struct _adapter *padapter)
 335 {
 336         struct net_device *pnetdev = padapter->pnetdev;
 337
 338         r8712_free_cmd_priv(&padapter->cmdpriv);
 339         r8712_free_evt_priv(&padapter->evtpriv);
 340         r8712_DeInitSwLeds(padapter);
 341         r8712_free_mlme_priv(&padapter->mlmepriv);
 342         r8712_free_io_queue(padapter);
 343         _free_xmit_priv(&padapter->xmitpriv);
 344         _r8712_free_sta_priv(&padapter->stapriv);
 345         _r8712_free_recv_priv(&padapter->recvpriv);
 346         mp871xdeinit(padapter);
 347         if (pnetdev)
 348                 free_netdev(pnetdev);
 349         return _SUCCESS;
 350 }
 351
 352
 353 static void enable_video_mode(struct _adapter *padapter, int cbw40_value)
 354 {
 355         /*   bit 8:
 356          *   1 -> enable video mode to 96B AP
 357          *   0 -> disable video mode to 96B AP
 358          *   bit 9:
 359          *   1 -> enable 40MHz mode
 360          *   0 -> disable 40MHz mode
 361          *   bit 10:
 362          *   1 -> enable STBC
 363          *   0 -> disable STBC
 364          */
 365         u32  intcmd = 0xf4000500;   /* enable bit8, bit10*/
 366
 367         if (cbw40_value) {
 368                 /* if the driver supports the 40M bandwidth,
 369                  * we can enable the bit 9.
 370                  */
 371                 intcmd |= 0x200;
 372         }
 373         r8712_fw_cmd(padapter, intcmd);
 374 }
 375
 376 /**
 377  *
 378  * This function intends to handle the activation of an interface
 379  * i.e. when it is brought Up/Active from a Down state.
 380  *
 381  */
 382 static int netdev_open(struct net_device *pnetdev)
 383 {
 384         struct _adapter *padapter = netdev_priv(pnetdev);
 385
 386         mutex_lock(&padapter->mutex_start);
 387         if (!padapter->bup) {
 388                 padapter->bDriverStopped = false;
 389                 padapter->bSurpriseRemoved = false;
 390                 padapter->bup = true;
 391                 if (rtl871x_hal_init(padapter) != _SUCCESS)
 392                         goto netdev_open_error;
 393                 if (r8712_initmac == NULL)
 394                         /* Use the mac address stored in the Efuse */
 395                         memcpy(pnetdev->dev_addr,
 396                                 padapter->eeprompriv.mac_addr, ETH_ALEN);
 397                 else {
 398                         /* We have to inform f/w to use user-supplied MAC
 399                          * address.
 400                          */
 401                         msleep(200);
 402                         r8712_setMacAddr_cmd(padapter, (u8 *)pnetdev->dev_addr);
 403                         /*
 404                          * The "myid" function will get the wifi mac address
 405                          * from eeprompriv structure instead of netdev
 406                          * structure. So, we have to overwrite the mac_addr
 407                          * stored in the eeprompriv structure. In this case,
 408                          * the real mac address won't be used anymore. So that,
 409                          * the eeprompriv.mac_addr should store the mac which
 410                          * users specify.
 411                          */
 412                         memcpy(padapter->eeprompriv.mac_addr,
 413                                 pnetdev->dev_addr, ETH_ALEN);
 414                 }
 415                 if (start_drv_threads(padapter) != _SUCCESS)
 416                         goto netdev_open_error;
 417                 if (padapter->dvobjpriv.inirp_init == NULL)
 418                         goto netdev_open_error;
 419                 else
 420                         padapter->dvobjpriv.inirp_init(padapter);
 421                 r8712_set_ps_mode(padapter, padapter->registrypriv.power_mgnt,
 422                                   padapter->registrypriv.smart_ps);
 423         }
 424         if (!netif_queue_stopped(pnetdev))
 425                 netif_start_queue(pnetdev);
 426         else
 427                 netif_wake_queue(pnetdev);
 428
 429          if (video_mode)
 430                 enable_video_mode(padapter, cbw40_enable);
 431         /* start driver mlme relation timer */
 432         start_drv_timers(padapter);
 433         padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
 434         mutex_unlock(&padapter->mutex_start);
 435         return 0;
 436 netdev_open_error:
 437         padapter->bup = false;
 438         netif_carrier_off(pnetdev);
 439         netif_stop_queue(pnetdev);
 440         mutex_unlock(&padapter->mutex_start);
 441         return -1;
 442 }
 443
 444 /**
 445  *
 446  * This function intends to handle the shutdown of an interface
 447  * i.e. when it is brought Down from an Up/Active state.
 448  *
 449  */
 450 static int netdev_close(struct net_device *pnetdev)
 451 {
 452         struct _adapter *padapter = netdev_priv(pnetdev);
 453
 454         /* Close LED*/
 455         padapter->ledpriv.LedControlHandler(padapter, LED_CTL_POWER_OFF);
 456         msleep(200);
 457
 458         /*s1.*/
 459         if (pnetdev) {
 460                 if (!netif_queue_stopped(pnetdev))
 461                         netif_stop_queue(pnetdev);
 462         }
 463         /*s2.*/
 464         /*s2-1.  issue disassoc_cmd to fw*/
 465         r8712_disassoc_cmd(padapter);
 466         /*s2-2.  indicate disconnect to os*/
 467         r8712_ind_disconnect(padapter);
 468         /*s2-3.*/
 469         r8712_free_assoc_resources(padapter);
 470         /*s2-4.*/
 471         r8712_free_network_queue(padapter);
 472         return 0;
 473 }
 474
 475 #include "mlme_osdep.h"