linux/drivers/staging/rtl8712/os_intfs.c
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   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
  37MODULE_LICENSE("GPL");
  38MODULE_DESCRIPTION("rtl871x wireless lan driver");
  39MODULE_AUTHOR("Larry Finger");
  40
  41static char ifname[IFNAMSIZ] = "wlan%d";
  42
  43/* module param defaults */
  44static int chip_version = RTL8712_2ndCUT;
  45static int rfintfs = HWPI;
  46static int lbkmode = RTL8712_AIR_TRX;
  47static int hci = RTL8712_USB;
  48static 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.*/
  52static int video_mode = 1;   /* enable video mode*/
  53
  54/*Ndis802_11Infrastructure; infra, ad-hoc, auto*/
  55static int network_mode = Ndis802_11IBSS;
  56static int channel = 1;/*ad-hoc support requirement*/
  57static int wireless_mode = WIRELESS_11BG;
  58static int vrtl_carrier_sense = AUTO_VCS;
  59static int vcs_type = RTS_CTS;
  60static int frag_thresh = 2346;
  61static int preamble = PREAMBLE_LONG;/*long, short, auto*/
  62static int scan_mode = 1;/*active, passive*/
  63static int adhoc_tx_pwr = 1;
  64static int soft_ap;
  65static int smart_ps = 1;
  66static int power_mgnt = PS_MODE_ACTIVE;
  67static int radio_enable = 1;
  68static int long_retry_lmt = 7;
  69static int short_retry_lmt = 7;
  70static int busy_thresh = 40;
  71static int ack_policy = NORMAL_ACK;
  72static int mp_mode;
  73static int software_encrypt;
  74static int software_decrypt;
  75
  76static int wmm_enable;/* default is set to disable the wmm.*/
  77static int uapsd_enable;
  78static int uapsd_max_sp = NO_LIMIT;
  79static int uapsd_acbk_en;
  80static int uapsd_acbe_en;
  81static int uapsd_acvi_en;
  82static int uapsd_acvo_en;
  83
  84static int ht_enable = 1;
  85static int cbw40_enable = 1;
  86static int rf_config = RTL8712_RF_1T2R;  /* 1T2R*/
  87static int low_power;
  88/* mac address to use instead of the one stored in Efuse */
  89char *r8712_initmac;
  90static char *initmac;
  91/* if wifi_test = 1, driver will disable the turbo mode and pass it to
  92 * firmware private.
  93 */
  94static int wifi_test;
  95
  96module_param_string(ifname, ifname, sizeof(ifname), 0644);
  97module_param(wifi_test, int, 0644);
  98module_param(initmac, charp, 0644);
  99module_param(video_mode, int, 0644);
 100module_param(chip_version, int, 0644);
 101module_param(rfintfs, int, 0644);
 102module_param(lbkmode, int, 0644);
 103module_param(hci, int, 0644);
 104module_param(network_mode, int, 0644);
 105module_param(channel, int, 0644);
 106module_param(mp_mode, int, 0644);
 107module_param(wmm_enable, int, 0644);
 108module_param(vrtl_carrier_sense, int, 0644);
 109module_param(vcs_type, int, 0644);
 110module_param(busy_thresh, int, 0644);
 111module_param(ht_enable, int, 0644);
 112module_param(cbw40_enable, int, 0644);
 113module_param(ampdu_enable, int, 0644);
 114module_param(rf_config, int, 0644);
 115module_param(power_mgnt, int, 0644);
 116module_param(low_power, int, 0644);
 117
 118MODULE_PARM_DESC(ifname, " Net interface name, wlan%d=default");
 119MODULE_PARM_DESC(initmac, "MAC-Address, default: use FUSE");
 120
 121static int netdev_open(struct net_device *pnetdev);
 122static int netdev_close(struct net_device *pnetdev);
 123
 124static 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
 171static 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
 181static 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
 196static 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
 205struct 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
 230static 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
 239void 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
 248static 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
 256void 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
 266static 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
 303u8 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        timer_setup(&padapter->securitypriv.tkip_timer,
 317                    r8712_use_tkipkey_handler, 0);
 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
 329u8 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
 348static 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 */
 377static 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;
 431netdev_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 */
 445static 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"
 471