drivers/staging/rtl8188eu/os_dep/usb_intf.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  ******************************************************************************/
  15
  16 #define pr_fmt(fmt) "R8188EU: " fmt
  17 #include <osdep_service.h>
  18 #include <drv_types.h>
  19 #include <recv_osdep.h>
  20 #include <xmit_osdep.h>
  21 #include <hal_intf.h>
  22 #include <linux/usb.h>
  23 #include <linux/vmalloc.h>
  24 #include <mon.h>
  25 #include <osdep_intf.h>
  26
  27 #include <usb_ops_linux.h>
  28 #include <rtw_ioctl.h>
  29
  30 #include "rtl8188e_hal.h"
  31
  32 #define USB_VENDER_ID_REALTEK           0x0bda
  33
  34 /* DID_USB_v916_20130116 */
  35 static struct usb_device_id rtw_usb_id_tbl[] = {
  36         /*=== Realtek demoboard ===*/
  37         {USB_DEVICE(USB_VENDER_ID_REALTEK, 0x8179)}, /* 8188EUS */
  38         {USB_DEVICE(USB_VENDER_ID_REALTEK, 0x0179)}, /* 8188ETV */
  39         /*=== Customer ID ===*/
  40         /****** 8188EUS ********/
  41         {USB_DEVICE(0x056e, 0x4008)}, /* Elecom WDC-150SU2M */
  42         {USB_DEVICE(0x07b8, 0x8179)}, /* Abocom - Abocom */
  43         {USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */
  44         {USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */
  45         {USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
  46         {USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
  47         {}      /* Terminating entry */
  48 };
  49
  50 MODULE_DEVICE_TABLE(usb, rtw_usb_id_tbl);
  51
  52 static struct dvobj_priv *usb_dvobj_init(struct usb_interface *usb_intf)
  53 {
  54         int     i;
  55         struct dvobj_priv *pdvobjpriv;
  56         struct usb_host_config          *phost_conf;
  57         struct usb_config_descriptor    *pconf_desc;
  58         struct usb_host_interface       *phost_iface;
  59         struct usb_interface_descriptor *piface_desc;
  60         struct usb_endpoint_descriptor  *pendp_desc;
  61         struct usb_device       *pusbd;
  62
  63         pdvobjpriv = kzalloc(sizeof(*pdvobjpriv), GFP_KERNEL);
  64         if (!pdvobjpriv)
  65                 return NULL;
  66
  67         pdvobjpriv->pusbintf = usb_intf;
  68         pusbd = interface_to_usbdev(usb_intf);
  69         pdvobjpriv->pusbdev = pusbd;
  70         usb_set_intfdata(usb_intf, pdvobjpriv);
  71
  72         pdvobjpriv->RtNumInPipes = 0;
  73         pdvobjpriv->RtNumOutPipes = 0;
  74
  75         phost_conf = pusbd->actconfig;
  76         pconf_desc = &phost_conf->desc;
  77
  78         phost_iface = &usb_intf->altsetting[0];
  79         piface_desc = &phost_iface->desc;
  80
  81         pdvobjpriv->NumInterfaces = pconf_desc->bNumInterfaces;
  82         pdvobjpriv->InterfaceNumber = piface_desc->bInterfaceNumber;
  83
  84         for (i = 0; i < piface_desc->bNumEndpoints; i++) {
  85                 int ep_num;
  86
  87                 pendp_desc = &phost_iface->endpoint[i].desc;
  88
  89                 ep_num = usb_endpoint_num(pendp_desc);
  90
  91                 if (usb_endpoint_is_bulk_in(pendp_desc)) {
  92                         pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = ep_num;
  93                         pdvobjpriv->RtNumInPipes++;
  94                 } else if (usb_endpoint_is_int_in(pendp_desc)) {
  95                         pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = ep_num;
  96                         pdvobjpriv->RtNumInPipes++;
  97                 } else if (usb_endpoint_is_bulk_out(pendp_desc)) {
  98                         pdvobjpriv->RtOutPipe[pdvobjpriv->RtNumOutPipes] =
  99                                 ep_num;
 100                         pdvobjpriv->RtNumOutPipes++;
 101                 }
 102         }
 103
 104         if (pusbd->speed == USB_SPEED_HIGH)
 105                 pdvobjpriv->ishighspeed = true;
 106         else
 107                 pdvobjpriv->ishighspeed = false;
 108
 109         mutex_init(&pdvobjpriv->usb_vendor_req_mutex);
 110         usb_get_dev(pusbd);
 111
 112         return pdvobjpriv;
 113 }
 114
 115 static void usb_dvobj_deinit(struct usb_interface *usb_intf)
 116 {
 117         struct dvobj_priv *dvobj = usb_get_intfdata(usb_intf);
 118
 119         usb_set_intfdata(usb_intf, NULL);
 120         if (dvobj) {
 121                 /* Modify condition for 92DU DMDP 2010.11.18, by Thomas */
 122                 if ((dvobj->NumInterfaces != 2 &&
 123                     dvobj->NumInterfaces != 3) ||
 124                     (dvobj->InterfaceNumber == 1)) {
 125                         if (interface_to_usbdev(usb_intf)->state !=
 126                             USB_STATE_NOTATTACHED) {
 127                                 /* If we didn't unplug usb dongle and
 128                                  * remove/insert module, driver fails
 129                                  * on sitesurvey for the first time when
 130                                  * device is up . Reset usb port for sitesurvey
 131                                  * fail issue. */
 132                                 pr_debug("usb attached..., try to reset usb device\n");
 133                                 usb_reset_device(interface_to_usbdev(usb_intf));
 134                         }
 135                 }
 136
 137                 mutex_destroy(&dvobj->usb_vendor_req_mutex);
 138                 kfree(dvobj);
 139         }
 140
 141         usb_put_dev(interface_to_usbdev(usb_intf));
 142
 143 }
 144
 145 void usb_intf_stop(struct adapter *padapter)
 146 {
 147         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+usb_intf_stop\n"));
 148
 149         /* disable_hw_interrupt */
 150         if (!padapter->bSurpriseRemoved) {
 151                 /* device still exists, so driver can do i/o operation */
 152                 /* TODO: */
 153                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 154                          ("SurpriseRemoved == false\n"));
 155         }
 156
 157         /* cancel in irp */
 158         rtw_hal_inirp_deinit(padapter);
 159
 160         /* cancel out irp */
 161         usb_write_port_cancel(padapter);
 162
 163         /* todo:cancel other irps */
 164
 165         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-usb_intf_stop\n"));
 166 }
 167
 168 static void rtw_dev_unload(struct adapter *padapter)
 169 {
 170         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_dev_unload\n"));
 171
 172         if (padapter->bup) {
 173                 pr_debug("===> rtw_dev_unload\n");
 174                 padapter->bDriverStopped = true;
 175                 if (padapter->xmitpriv.ack_tx)
 176                         rtw_ack_tx_done(&padapter->xmitpriv, RTW_SCTX_DONE_DRV_STOP);
 177                 /* s3. */
 178                 usb_intf_stop(padapter);
 179                 /* s4. */
 180                 if (!padapter->pwrctrlpriv.bInternalAutoSuspend)
 181                         rtw_stop_drv_threads(padapter);
 182
 183                 /* s5. */
 184                 if (!padapter->bSurpriseRemoved) {
 185                         rtw_hal_deinit(padapter);
 186                         padapter->bSurpriseRemoved = true;
 187                 }
 188
 189                 padapter->bup = false;
 190         } else {
 191                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 192                          ("r871x_dev_unload():padapter->bup == false\n"));
 193         }
 194
 195         pr_debug("<=== rtw_dev_unload\n");
 196
 197         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-rtw_dev_unload\n"));
 198 }
 199
 200 static int rtw_suspend(struct usb_interface *pusb_intf, pm_message_t message)
 201 {
 202         struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
 203         struct adapter *padapter = dvobj->if1;
 204         struct net_device *pnetdev = padapter->pnetdev;
 205         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 206         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 207         unsigned long start_time = jiffies;
 208
 209         pr_debug("==> %s (%s:%d)\n", __func__, current->comm, current->pid);
 210
 211         if ((!padapter->bup) || (padapter->bDriverStopped) ||
 212             (padapter->bSurpriseRemoved)) {
 213                 pr_debug("padapter->bup=%d bDriverStopped=%d bSurpriseRemoved = %d\n",
 214                         padapter->bup, padapter->bDriverStopped,
 215                         padapter->bSurpriseRemoved);
 216                 goto exit;
 217         }
 218
 219         pwrpriv->bInSuspend = true;
 220         rtw_cancel_all_timer(padapter);
 221         LeaveAllPowerSaveMode(padapter);
 222
 223         mutex_lock(&pwrpriv->mutex_lock);
 224         /* s1. */
 225         if (pnetdev) {
 226                 netif_carrier_off(pnetdev);
 227                 netif_tx_stop_all_queues(pnetdev);
 228         }
 229
 230         /* s2. */
 231         rtw_disassoc_cmd(padapter, 0, false);
 232
 233         if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) &&
 234             check_fwstate(pmlmepriv, _FW_LINKED)) {
 235                 pr_debug("%s:%d %s(%pM), length:%d assoc_ssid.length:%d\n",
 236                         __func__, __LINE__,
 237                         pmlmepriv->cur_network.network.Ssid.Ssid,
 238                         pmlmepriv->cur_network.network.MacAddress,
 239                         pmlmepriv->cur_network.network.Ssid.SsidLength,
 240                         pmlmepriv->assoc_ssid.SsidLength);
 241
 242                 pmlmepriv->to_roaming = 1;
 243         }
 244         /* s2-2.  indicate disconnect to os */
 245         rtw_indicate_disconnect(padapter);
 246         /* s2-3. */
 247         rtw_free_assoc_resources(padapter);
 248         /* s2-4. */
 249         rtw_free_network_queue(padapter, true);
 250
 251         rtw_dev_unload(padapter);
 252         mutex_unlock(&pwrpriv->mutex_lock);
 253
 254         if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY))
 255                 rtw_indicate_scan_done(padapter, 1);
 256
 257         if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING))
 258                 rtw_indicate_disconnect(padapter);
 259
 260 exit:
 261         pr_debug("<===  %s .............. in %dms\n", __func__,
 262                  jiffies_to_msecs(jiffies - start_time));
 263
 264         return 0;
 265 }
 266
 267 static int rtw_resume_process(struct adapter *padapter)
 268 {
 269         struct net_device *pnetdev;
 270         struct pwrctrl_priv *pwrpriv = NULL;
 271         int ret = -1;
 272         unsigned long start_time = jiffies;
 273
 274         pr_debug("==> %s (%s:%d)\n", __func__, current->comm, current->pid);
 275
 276         if (padapter) {
 277                 pnetdev = padapter->pnetdev;
 278                 pwrpriv = &padapter->pwrctrlpriv;
 279         } else {
 280                 goto exit;
 281         }
 282
 283         mutex_lock(&pwrpriv->mutex_lock);
 284         rtw_reset_drv_sw(padapter);
 285         pwrpriv->bkeepfwalive = false;
 286
 287         pr_debug("bkeepfwalive(%x)\n", pwrpriv->bkeepfwalive);
 288         if (netdev_open(pnetdev) != 0) {
 289                 mutex_unlock(&pwrpriv->mutex_lock);
 290                 goto exit;
 291         }
 292
 293         netif_device_attach(pnetdev);
 294         netif_carrier_on(pnetdev);
 295
 296         mutex_unlock(&pwrpriv->mutex_lock);
 297
 298         rtw_roaming(padapter, NULL);
 299
 300         ret = 0;
 301 exit:
 302         if (pwrpriv)
 303                 pwrpriv->bInSuspend = false;
 304         pr_debug("<===  %s return %d.............. in %dms\n", __func__,
 305                 ret, jiffies_to_msecs(jiffies - start_time));
 306
 307         return ret;
 308 }
 309
 310 static int rtw_resume(struct usb_interface *pusb_intf)
 311 {
 312         struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
 313         struct adapter *padapter = dvobj->if1;
 314
 315         return rtw_resume_process(padapter);
 316 }
 317
 318 /*
 319  * drv_init() - a device potentially for us
 320  *
 321  * notes: drv_init() is called when the bus driver has located
 322  * a card for us to support.
 323  *        We accept the new device by returning 0.
 324  */
 325
 326 static struct adapter *rtw_usb_if1_init(struct dvobj_priv *dvobj,
 327         struct usb_interface *pusb_intf, const struct usb_device_id *pdid)
 328 {
 329         struct adapter *padapter = NULL;
 330         struct net_device *pnetdev = NULL;
 331         struct net_device *pmondev;
 332         int status = _FAIL;
 333
 334         padapter = (struct adapter *)vzalloc(sizeof(*padapter));
 335         if (padapter == NULL)
 336                 goto exit;
 337         padapter->dvobj = dvobj;
 338         dvobj->if1 = padapter;
 339
 340         padapter->bDriverStopped = true;
 341         mutex_init(&padapter->hw_init_mutex);
 342
 343         pnetdev = rtw_init_netdev(padapter);
 344         if (pnetdev == NULL)
 345                 goto free_adapter;
 346         SET_NETDEV_DEV(pnetdev, dvobj_to_dev(dvobj));
 347         padapter = rtw_netdev_priv(pnetdev);
 348
 349         if (padapter->registrypriv.monitor_enable) {
 350                 pmondev = rtl88eu_mon_init();
 351                 if (pmondev == NULL)
 352                         netdev_warn(pnetdev, "Failed to initialize monitor interface");
 353                 padapter->pmondev = pmondev;
 354         }
 355
 356         padapter->HalData = kzalloc(sizeof(struct hal_data_8188e), GFP_KERNEL);
 357         if (!padapter->HalData)
 358                 DBG_88E("cant not alloc memory for HAL DATA\n");
 359
 360         /* step read_chip_version */
 361         rtw_hal_read_chip_version(padapter);
 362
 363         /* step usb endpoint mapping */
 364         rtw_hal_chip_configure(padapter);
 365
 366         /* step read efuse/eeprom data and get mac_addr */
 367         rtw_hal_read_chip_info(padapter);
 368
 369         /* step 5. */
 370         if (rtw_init_drv_sw(padapter) == _FAIL) {
 371                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 372                          ("Initialize driver software resource Failed!\n"));
 373                 goto free_hal_data;
 374         }
 375
 376 #ifdef CONFIG_PM
 377         if (padapter->pwrctrlpriv.bSupportRemoteWakeup) {
 378                 dvobj->pusbdev->do_remote_wakeup = 1;
 379                 pusb_intf->needs_remote_wakeup = 1;
 380                 device_init_wakeup(&pusb_intf->dev, 1);
 381                 pr_debug("\n  padapter->pwrctrlpriv.bSupportRemoteWakeup~~~~~~\n");
 382                 pr_debug("\n  padapter->pwrctrlpriv.bSupportRemoteWakeup~~~[%d]~~~\n",
 383                         device_may_wakeup(&pusb_intf->dev));
 384         }
 385 #endif
 386
 387         /* 2012-07-11 Move here to prevent the 8723AS-VAU BT auto
 388          * suspend influence */
 389         if (usb_autopm_get_interface(pusb_intf) < 0)
 390                         pr_debug("can't get autopm:\n");
 391
 392         /*  alloc dev name after read efuse. */
 393         rtw_init_netdev_name(pnetdev, padapter->registrypriv.ifname);
 394         rtw_macaddr_cfg(padapter->eeprompriv.mac_addr);
 395         memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);
 396         pr_debug("MAC Address from pnetdev->dev_addr =  %pM\n",
 397                 pnetdev->dev_addr);
 398
 399         /* step 6. Tell the network stack we exist */
 400         if (register_netdev(pnetdev) != 0) {
 401                 RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("register_netdev() failed\n"));
 402                 goto free_hal_data;
 403         }
 404
 405         pr_debug("bDriverStopped:%d, bSurpriseRemoved:%d, bup:%d, hw_init_completed:%d\n"
 406                 , padapter->bDriverStopped
 407                 , padapter->bSurpriseRemoved
 408                 , padapter->bup
 409                 , padapter->hw_init_completed
 410         );
 411
 412         status = _SUCCESS;
 413
 414 free_hal_data:
 415         if (status != _SUCCESS)
 416                 kfree(padapter->HalData);
 417 free_adapter:
 418         if (status != _SUCCESS) {
 419                 if (pnetdev)
 420                         rtw_free_netdev(pnetdev);
 421                 else
 422                         vfree(padapter);
 423                 padapter = NULL;
 424         }
 425 exit:
 426         return padapter;
 427 }
 428
 429 static void rtw_usb_if1_deinit(struct adapter *if1)
 430 {
 431         struct net_device *pnetdev = if1->pnetdev;
 432         struct mlme_priv *pmlmepriv = &if1->mlmepriv;
 433
 434         if (check_fwstate(pmlmepriv, _FW_LINKED))
 435                 rtw_disassoc_cmd(if1, 0, false);
 436
 437 #ifdef CONFIG_88EU_AP_MODE
 438         free_mlme_ap_info(if1);
 439 #endif
 440
 441         if (pnetdev)
 442                 unregister_netdev(pnetdev); /* will call netdev_close() */
 443
 444         rtl88eu_mon_deinit(if1->pmondev);
 445         rtw_cancel_all_timer(if1);
 446
 447         rtw_dev_unload(if1);
 448         pr_debug("+r871xu_dev_remove, hw_init_completed=%d\n",
 449                 if1->hw_init_completed);
 450         rtw_free_drv_sw(if1);
 451         rtw_free_netdev(pnetdev);
 452 }
 453
 454 static int rtw_drv_init(struct usb_interface *pusb_intf, const struct usb_device_id *pdid)
 455 {
 456         struct adapter *if1 = NULL;
 457         struct dvobj_priv *dvobj;
 458
 459         /* Initialize dvobj_priv */
 460         dvobj = usb_dvobj_init(pusb_intf);
 461         if (!dvobj) {
 462                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 463                          ("initialize device object priv Failed!\n"));
 464                 goto exit;
 465         }
 466
 467         if1 = rtw_usb_if1_init(dvobj, pusb_intf, pdid);
 468         if (!if1) {
 469                 pr_debug("rtw_init_primarystruct adapter Failed!\n");
 470                 goto free_dvobj;
 471         }
 472
 473         return 0;
 474
 475 free_dvobj:
 476         usb_dvobj_deinit(pusb_intf);
 477 exit:
 478         return -ENODEV;
 479 }
 480
 481 /*
 482  * dev_remove() - our device is being removed
 483 */
 484 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove() => how to recognize both */
 485 static void rtw_dev_remove(struct usb_interface *pusb_intf)
 486 {
 487         struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
 488         struct adapter *padapter = dvobj->if1;
 489
 490         pr_debug("+rtw_dev_remove\n");
 491         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+dev_remove()\n"));
 492
 493         if (!pusb_intf->unregistering)
 494                 padapter->bSurpriseRemoved = true;
 495
 496         rtw_pm_set_ips(padapter, IPS_NONE);
 497         rtw_pm_set_lps(padapter, PS_MODE_ACTIVE);
 498
 499         LeaveAllPowerSaveMode(padapter);
 500
 501         rtw_usb_if1_deinit(padapter);
 502
 503         usb_dvobj_deinit(pusb_intf);
 504
 505         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-dev_remove()\n"));
 506         pr_debug("-r871xu_dev_remove, done\n");
 507 }
 508
 509 static struct usb_driver rtl8188e_usb_drv = {
 510         .name = "r8188eu",
 511         .probe = rtw_drv_init,
 512         .disconnect = rtw_dev_remove,
 513         .id_table = rtw_usb_id_tbl,
 514         .suspend =  rtw_suspend,
 515         .resume = rtw_resume,
 516         .reset_resume = rtw_resume,
 517 };
 518
 519 module_usb_driver(rtl8188e_usb_drv)