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  * Modifications for inclusion into the Linux staging tree are
  17  * Copyright(c) 2010 Larry Finger. All rights reserved.
  18  *
  19  * Contact information:
  20  * WLAN FAE <wlanfae@realtek.com>.
  21  * Larry Finger <Larry.Finger@lwfinger.net>
  22  *
  23  ******************************************************************************/
  24
  25 #define _OS_INTFS_C_
  26
  27 #include <linux/module.h>
  28 #include <linux/kthread.h>
  29 #include <linux/firmware.h>
  30 #include "osdep_service.h"
  31 #include "drv_types.h"
  32 #include "xmit_osdep.h"
  33 #include "recv_osdep.h"
  34 #include "rtl871x_ioctl.h"
  35 #include "usb_osintf.h"
  36
  37 MODULE_LICENSE("GPL");
  38 MODULE_DESCRIPTION("rtl871x wireless lan driver");
  39 MODULE_AUTHOR("Larry Finger");
  40
  41 static char ifname[IFNAMSIZ] = "wlan%d";
  42
  43 /* module param defaults */
  44 static int chip_version = RTL8712_2ndCUT;
  45 static int rfintfs = HWPI;
  46 static int lbkmode = RTL8712_AIR_TRX;
  47 static int hci = RTL8712_USB;
  48 static int ampdu_enable = 1;/*for enable tx_ampdu*/
  49
  50 /* The video_mode variable is for video mode.*/
  51 /* It may be specify when inserting module with video_mode=1 parameter.*/
  52 static int video_mode = 1;   /* enable video mode*/
  53
  54 /*Ndis802_11Infrastructure; infra, ad-hoc, auto*/
  55 static int network_mode = Ndis802_11IBSS;
  56 static int channel = 1;/*ad-hoc support requirement*/
  57 static int wireless_mode = WIRELESS_11BG;
  58 static int vrtl_carrier_sense = AUTO_VCS;
  59 static int vcs_type = RTS_CTS;
  60 static int frag_thresh = 2346;
  61 static int preamble = PREAMBLE_LONG;/*long, short, auto*/
  62 static int scan_mode = 1;/*active, passive*/
  63 static int adhoc_tx_pwr = 1;
  64 static int soft_ap;
  65 static int smart_ps = 1;
  66 static int power_mgnt = PS_MODE_ACTIVE;
  67 static int radio_enable = 1;
  68 static int long_retry_lmt = 7;
  69 static int short_retry_lmt = 7;
  70 static int busy_thresh = 40;
  71 static int ack_policy = NORMAL_ACK;
  72 static int mp_mode;
  73 static int software_encrypt;
  74 static int software_decrypt;
  75
  76 static int wmm_enable;/* default is set to disable the wmm.*/
  77 static int uapsd_enable;
  78 static int uapsd_max_sp = NO_LIMIT;
  79 static int uapsd_acbk_en;
  80 static int uapsd_acbe_en;
  81 static int uapsd_acvi_en;
  82 static int uapsd_acvo_en;
  83
  84 static int ht_enable = 1;
  85 static int cbw40_enable = 1;
  86 static int rf_config = RTL8712_RF_1T2R;  /* 1T2R*/
  87 static int low_power;
  88 /* mac address to use instead of the one stored in Efuse */
  89 char *r8712_initmac;
  90 static char *initmac;
  91 /* if wifi_test = 1, driver will disable the turbo mode and pass it to
  92  * firmware private.
  93  */
  94 static int wifi_test;
  95
  96 module_param_string(ifname, ifname, sizeof(ifname), 0644);
  97 module_param(wifi_test, int, 0644);
  98 module_param(initmac, charp, 0644);
  99 module_param(video_mode, int, 0644);
 100 module_param(chip_version, int, 0644);
 101 module_param(rfintfs, int, 0644);
 102 module_param(lbkmode, int, 0644);
 103 module_param(hci, int, 0644);
 104 module_param(network_mode, int, 0644);
 105 module_param(channel, int, 0644);
 106 module_param(mp_mode, int, 0644);
 107 module_param(wmm_enable, int, 0644);
 108 module_param(vrtl_carrier_sense, int, 0644);
 109 module_param(vcs_type, int, 0644);
 110 module_param(busy_thresh, int, 0644);
 111 module_param(ht_enable, int, 0644);
 112 module_param(cbw40_enable, int, 0644);
 113 module_param(ampdu_enable, int, 0644);
 114 module_param(rf_config, int, 0644);
 115 module_param(power_mgnt, int, 0644);
 116 module_param(low_power, int, 0644);
 117
 118 MODULE_PARM_DESC(ifname, " Net interface name, wlan%d=default");
 119 MODULE_PARM_DESC(initmac, "MAC-Address, default: use FUSE");
 120
 121 static int netdev_open(struct net_device *pnetdev);
 122 static int netdev_close(struct net_device *pnetdev);
 123
 124 static void loadparam(struct _adapter *padapter, struct  net_device *pnetdev)
 125 {
 126         struct registry_priv  *registry_par = &padapter->registrypriv;
 127
 128         registry_par->chip_version = (u8)chip_version;
 129         registry_par->rfintfs = (u8)rfintfs;
 130         registry_par->lbkmode = (u8)lbkmode;
 131         registry_par->hci = (u8)hci;
 132         registry_par->network_mode  = (u8)network_mode;
 133         memcpy(registry_par->ssid.Ssid, "ANY", 3);
 134         registry_par->ssid.SsidLength = 3;
 135         registry_par->channel = (u8)channel;
 136         registry_par->wireless_mode = (u8)wireless_mode;
 137         registry_par->vrtl_carrier_sense = (u8)vrtl_carrier_sense;
 138         registry_par->vcs_type = (u8)vcs_type;
 139         registry_par->frag_thresh = (u16)frag_thresh;
 140         registry_par->preamble = (u8)preamble;
 141         registry_par->scan_mode = (u8)scan_mode;
 142         registry_par->adhoc_tx_pwr = (u8)adhoc_tx_pwr;
 143         registry_par->soft_ap = (u8)soft_ap;
 144         registry_par->smart_ps = (u8)smart_ps;
 145         registry_par->power_mgnt = (u8)power_mgnt;
 146         registry_par->radio_enable = (u8)radio_enable;
 147         registry_par->long_retry_lmt = (u8)long_retry_lmt;
 148         registry_par->short_retry_lmt = (u8)short_retry_lmt;
 149         registry_par->busy_thresh = (u16)busy_thresh;
 150         registry_par->ack_policy = (u8)ack_policy;
 151         registry_par->mp_mode = (u8)mp_mode;
 152         registry_par->software_encrypt = (u8)software_encrypt;
 153         registry_par->software_decrypt = (u8)software_decrypt;
 154         /*UAPSD*/
 155         registry_par->wmm_enable = (u8)wmm_enable;
 156         registry_par->uapsd_enable = (u8)uapsd_enable;
 157         registry_par->uapsd_max_sp = (u8)uapsd_max_sp;
 158         registry_par->uapsd_acbk_en = (u8)uapsd_acbk_en;
 159         registry_par->uapsd_acbe_en = (u8)uapsd_acbe_en;
 160         registry_par->uapsd_acvi_en = (u8)uapsd_acvi_en;
 161         registry_par->uapsd_acvo_en = (u8)uapsd_acvo_en;
 162         registry_par->ht_enable = (u8)ht_enable;
 163         registry_par->cbw40_enable = (u8)cbw40_enable;
 164         registry_par->ampdu_enable = (u8)ampdu_enable;
 165         registry_par->rf_config = (u8)rf_config;
 166         registry_par->low_power = (u8)low_power;
 167         registry_par->wifi_test = (u8)wifi_test;
 168         r8712_initmac = initmac;
 169 }
 170
 171 static int r871x_net_set_mac_address(struct net_device *pnetdev, void *p)
 172 {
 173         struct _adapter *padapter = netdev_priv(pnetdev);
 174         struct sockaddr *addr = p;
 175
 176         if (!padapter->bup)
 177                 ether_addr_copy(pnetdev->dev_addr, addr->sa_data);
 178         return 0;
 179 }
 180
 181 static struct net_device_stats *r871x_net_get_stats(struct net_device *pnetdev)
 182 {
 183         struct _adapter *padapter = netdev_priv(pnetdev);
 184         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 185         struct recv_priv *precvpriv = &padapter->recvpriv;
 186
 187         padapter->stats.tx_packets = pxmitpriv->tx_pkts;
 188         padapter->stats.rx_packets = precvpriv->rx_pkts;
 189         padapter->stats.tx_dropped = pxmitpriv->tx_drop;
 190         padapter->stats.rx_dropped = precvpriv->rx_drop;
 191         padapter->stats.tx_bytes = pxmitpriv->tx_bytes;
 192         padapter->stats.rx_bytes = precvpriv->rx_bytes;
 193         return &padapter->stats;
 194 }
 195
 196 static const struct net_device_ops rtl8712_netdev_ops = {
 197         .ndo_open = netdev_open,
 198         .ndo_stop = netdev_close,
 199         .ndo_start_xmit = r8712_xmit_entry,
 200         .ndo_set_mac_address = r871x_net_set_mac_address,
 201         .ndo_get_stats = r871x_net_get_stats,
 202         .ndo_do_ioctl = r871x_ioctl,
 203 };
 204
 205 struct net_device *r8712_init_netdev(void)
 206 {
 207         struct _adapter *padapter;
 208         struct net_device *pnetdev;
 209
 210         pnetdev = alloc_etherdev(sizeof(struct _adapter));
 211         if (!pnetdev)
 212                 return NULL;
 213         if (dev_alloc_name(pnetdev, ifname) < 0) {
 214                 strcpy(ifname, "wlan%d");
 215                 dev_alloc_name(pnetdev, ifname);
 216         }
 217         padapter = netdev_priv(pnetdev);
 218         padapter->pnetdev = pnetdev;
 219         pr_info("r8712u: register rtl8712_netdev_ops to netdev_ops\n");
 220         pnetdev->netdev_ops = &rtl8712_netdev_ops;
 221         pnetdev->watchdog_timeo = HZ; /* 1 second timeout */
 222         pnetdev->wireless_handlers = (struct iw_handler_def *)
 223                                      &r871x_handlers_def;
 224         loadparam(padapter, pnetdev);
 225         netif_carrier_off(pnetdev);
 226         padapter->pid = 0;  /* Initial the PID value used for HW PBC.*/
 227         return pnetdev;
 228 }
 229
 230 static u32 start_drv_threads(struct _adapter *padapter)
 231 {
 232         padapter->cmdThread = kthread_run(r8712_cmd_thread, padapter, "%s",
 233                               padapter->pnetdev->name);
 234         if (IS_ERR(padapter->cmdThread))
 235                 return _FAIL;
 236         return _SUCCESS;
 237 }
 238
 239 void r8712_stop_drv_threads(struct _adapter *padapter)
 240 {
 241         /*Below is to terminate r8712_cmd_thread & event_thread...*/
 242         complete(&padapter->cmdpriv.cmd_queue_comp);
 243         if (padapter->cmdThread)
 244                 wait_for_completion_interruptible(&padapter->cmdpriv.terminate_cmdthread_comp);
 245         padapter->cmdpriv.cmd_seq = 1;
 246 }
 247
 248 static void start_drv_timers(struct _adapter *padapter)
 249 {
 250         mod_timer(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
 251                   jiffies + msecs_to_jiffies(5000));
 252         mod_timer(&padapter->mlmepriv.wdg_timer,
 253                   jiffies + msecs_to_jiffies(2000));
 254 }
 255
 256 void r8712_stop_drv_timers(struct _adapter *padapter)
 257 {
 258         del_timer_sync(&padapter->mlmepriv.assoc_timer);
 259         del_timer_sync(&padapter->securitypriv.tkip_timer);
 260         del_timer_sync(&padapter->mlmepriv.scan_to_timer);
 261         del_timer_sync(&padapter->mlmepriv.dhcp_timer);
 262         del_timer_sync(&padapter->mlmepriv.wdg_timer);
 263         del_timer_sync(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer);
 264 }
 265
 266 static u8 init_default_value(struct _adapter *padapter)
 267 {
 268         struct registry_priv *pregistrypriv = &padapter->registrypriv;
 269         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 270         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 271         struct security_priv *psecuritypriv = &padapter->securitypriv;
 272
 273         /*xmit_priv*/
 274         pxmitpriv->vcs_setting = pregistrypriv->vrtl_carrier_sense;
 275         pxmitpriv->vcs = pregistrypriv->vcs_type;
 276         pxmitpriv->vcs_type = pregistrypriv->vcs_type;
 277         pxmitpriv->rts_thresh = pregistrypriv->rts_thresh;
 278         pxmitpriv->frag_len = pregistrypriv->frag_thresh;
 279         /* mlme_priv */
 280         /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
 281         pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
 282         /*ht_priv*/
 283         {
 284                 int i;
 285                 struct ht_priv   *phtpriv = &pmlmepriv->htpriv;
 286
 287                 phtpriv->ampdu_enable = false;/*set to disabled*/
 288                 for (i = 0; i < 16; i++)
 289                         phtpriv->baddbareq_issued[i] = false;
 290         }
 291         /*security_priv*/
 292         psecuritypriv->sw_encrypt = pregistrypriv->software_encrypt;
 293         psecuritypriv->sw_decrypt = pregistrypriv->software_decrypt;
 294         psecuritypriv->binstallGrpkey = _FAIL;
 295         /*pwrctrl_priv*/
 296         /*registry_priv*/
 297         r8712_init_registrypriv_dev_network(padapter);
 298         r8712_update_registrypriv_dev_network(padapter);
 299         /*misc.*/
 300         return _SUCCESS;
 301 }
 302
 303 u8 r8712_init_drv_sw(struct _adapter *padapter)
 304 {
 305         if ((r8712_init_cmd_priv(&padapter->cmdpriv)) == _FAIL)
 306                 return _FAIL;
 307         padapter->cmdpriv.padapter = padapter;
 308         if ((r8712_init_evt_priv(&padapter->evtpriv)) == _FAIL)
 309                 return _FAIL;
 310         if (r8712_init_mlme_priv(padapter) == _FAIL)
 311                 return _FAIL;
 312         _r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
 313         _r8712_init_recv_priv(&padapter->recvpriv, padapter);
 314         memset((unsigned char *)&padapter->securitypriv, 0,
 315                sizeof(struct security_priv));
 316         setup_timer(&padapter->securitypriv.tkip_timer,
 317                     r8712_use_tkipkey_handler, (unsigned long)padapter);
 318         _r8712_init_sta_priv(&padapter->stapriv);
 319         padapter->stapriv.padapter = padapter;
 320         r8712_init_bcmc_stainfo(padapter);
 321         r8712_init_pwrctrl_priv(padapter);
 322         mp871xinit(padapter);
 323         if (init_default_value(padapter) != _SUCCESS)
 324                 return _FAIL;
 325         r8712_InitSwLeds(padapter);
 326         return _SUCCESS;
 327 }
 328
 329 u8 r8712_free_drv_sw(struct _adapter *padapter)
 330 {
 331         struct net_device *pnetdev = padapter->pnetdev;
 332
 333         r8712_free_cmd_priv(&padapter->cmdpriv);
 334         r8712_free_evt_priv(&padapter->evtpriv);
 335         r8712_DeInitSwLeds(padapter);
 336         r8712_free_mlme_priv(&padapter->mlmepriv);
 337         r8712_free_io_queue(padapter);
 338         _free_xmit_priv(&padapter->xmitpriv);
 339         _r8712_free_sta_priv(&padapter->stapriv);
 340         _r8712_free_recv_priv(&padapter->recvpriv);
 341         mp871xdeinit(padapter);
 342         if (pnetdev)
 343                 free_netdev(pnetdev);
 344         return _SUCCESS;
 345 }
 346
 347
 348 static void enable_video_mode(struct _adapter *padapter, int cbw40_value)
 349 {
 350         /*   bit 8:
 351          *   1 -> enable video mode to 96B AP
 352          *   0 -> disable video mode to 96B AP
 353          *   bit 9:
 354          *   1 -> enable 40MHz mode
 355          *   0 -> disable 40MHz mode
 356          *   bit 10:
 357          *   1 -> enable STBC
 358          *   0 -> disable STBC
 359          */
 360         u32  intcmd = 0xf4000500;   /* enable bit8, bit10*/
 361
 362         if (cbw40_value) {
 363                 /* if the driver supports the 40M bandwidth,
 364                  * we can enable the bit 9.
 365                  */
 366                 intcmd |= 0x200;
 367         }
 368         r8712_fw_cmd(padapter, intcmd);
 369 }
 370
 371 /**
 372  *
 373  * This function intends to handle the activation of an interface
 374  * i.e. when it is brought Up/Active from a Down state.
 375  *
 376  */
 377 static int netdev_open(struct net_device *pnetdev)
 378 {
 379         struct _adapter *padapter = netdev_priv(pnetdev);
 380
 381         mutex_lock(&padapter->mutex_start);
 382         if (!padapter->bup) {
 383                 padapter->bDriverStopped = false;
 384                 padapter->bSurpriseRemoved = false;
 385                 padapter->bup = true;
 386                 if (rtl871x_hal_init(padapter) != _SUCCESS)
 387                         goto netdev_open_error;
 388                 if (!r8712_initmac)
 389                         /* Use the mac address stored in the Efuse */
 390                         memcpy(pnetdev->dev_addr,
 391                                padapter->eeprompriv.mac_addr, ETH_ALEN);
 392                 else {
 393                         /* We have to inform f/w to use user-supplied MAC
 394                          * address.
 395                          */
 396                         msleep(200);
 397                         r8712_setMacAddr_cmd(padapter, (u8 *)pnetdev->dev_addr);
 398                         /*
 399                          * The "myid" function will get the wifi mac address
 400                          * from eeprompriv structure instead of netdev
 401                          * structure. So, we have to overwrite the mac_addr
 402                          * stored in the eeprompriv structure. In this case,
 403                          * the real mac address won't be used anymore. So that,
 404                          * the eeprompriv.mac_addr should store the mac which
 405                          * users specify.
 406                          */
 407                         memcpy(padapter->eeprompriv.mac_addr,
 408                                pnetdev->dev_addr, ETH_ALEN);
 409                 }
 410                 if (start_drv_threads(padapter) != _SUCCESS)
 411                         goto netdev_open_error;
 412                 if (!padapter->dvobjpriv.inirp_init)
 413                         goto netdev_open_error;
 414                 else
 415                         padapter->dvobjpriv.inirp_init(padapter);
 416                 r8712_set_ps_mode(padapter, padapter->registrypriv.power_mgnt,
 417                                   padapter->registrypriv.smart_ps);
 418         }
 419         if (!netif_queue_stopped(pnetdev))
 420                 netif_start_queue(pnetdev);
 421         else
 422                 netif_wake_queue(pnetdev);
 423
 424         if (video_mode)
 425                 enable_video_mode(padapter, cbw40_enable);
 426         /* start driver mlme relation timer */
 427         start_drv_timers(padapter);
 428         padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
 429         mutex_unlock(&padapter->mutex_start);
 430         return 0;
 431 netdev_open_error:
 432         padapter->bup = false;
 433         netif_carrier_off(pnetdev);
 434         netif_stop_queue(pnetdev);
 435         mutex_unlock(&padapter->mutex_start);
 436         return -1;
 437 }
 438
 439 /**
 440  *
 441  * This function intends to handle the shutdown of an interface
 442  * i.e. when it is brought Down from an Up/Active state.
 443  *
 444  */
 445 static int netdev_close(struct net_device *pnetdev)
 446 {
 447         struct _adapter *padapter = netdev_priv(pnetdev);
 448
 449         /* Close LED*/
 450         padapter->ledpriv.LedControlHandler(padapter, LED_CTL_POWER_OFF);
 451         msleep(200);
 452
 453         /*s1.*/
 454         if (pnetdev) {
 455                 if (!netif_queue_stopped(pnetdev))
 456                         netif_stop_queue(pnetdev);
 457         }
 458         /*s2.*/
 459         /*s2-1.  issue disassoc_cmd to fw*/
 460         r8712_disassoc_cmd(padapter);
 461         /*s2-2.  indicate disconnect to os*/
 462         r8712_ind_disconnect(padapter);
 463         /*s2-3.*/
 464         r8712_free_assoc_resources(padapter);
 465         /*s2-4.*/
 466         r8712_free_network_queue(padapter);
 467         return 0;
 468 }
 469
 470 #include "mlme_osdep.h"