kernel/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  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  *
  19  ******************************************************************************/
  20
  21 #define pr_fmt(fmt) "R8188EU: " fmt
  22 #include <osdep_service.h>
  23 #include <drv_types.h>
  24 #include <recv_osdep.h>
  25 #include <xmit_osdep.h>
  26 #include <hal_intf.h>
  27 #include <linux/usb.h>
  28 #include <linux/vmalloc.h>
  29 #include <mon.h>
  30 #include <osdep_intf.h>
  31
  32 #include <usb_ops_linux.h>
  33 #include <usb_hal.h>
  34 #include <rtw_ioctl.h>
  35
  36 #define USB_VENDER_ID_REALTEK           0x0bda
  37
  38 /* DID_USB_v916_20130116 */
  39 static struct usb_device_id rtw_usb_id_tbl[] = {
  40         /*=== Realtek demoboard ===*/
  41         {USB_DEVICE(USB_VENDER_ID_REALTEK, 0x8179)}, /* 8188EUS */
  42         {USB_DEVICE(USB_VENDER_ID_REALTEK, 0x0179)}, /* 8188ETV */
  43         /*=== Customer ID ===*/
  44         /****** 8188EUS ********/
  45         {USB_DEVICE(0x056e, 0x4008)}, /* Elecom WDC-150SU2M */
  46         {USB_DEVICE(0x07b8, 0x8179)}, /* Abocom - Abocom */
  47         {USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */
  48         {USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */
  49         {USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
  50         {USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
  51         {}      /* Terminating entry */
  52 };
  53
  54 MODULE_DEVICE_TABLE(usb, rtw_usb_id_tbl);
  55
  56 static struct dvobj_priv *usb_dvobj_init(struct usb_interface *usb_intf)
  57 {
  58         int     i;
  59         struct dvobj_priv *pdvobjpriv;
  60         struct usb_host_config          *phost_conf;
  61         struct usb_config_descriptor    *pconf_desc;
  62         struct usb_host_interface       *phost_iface;
  63         struct usb_interface_descriptor *piface_desc;
  64         struct usb_endpoint_descriptor  *pendp_desc;
  65         struct usb_device       *pusbd;
  66
  67         pdvobjpriv = kzalloc(sizeof(*pdvobjpriv), GFP_KERNEL);
  68         if (pdvobjpriv == NULL)
  69                 return NULL;
  70
  71         pdvobjpriv->pusbintf = usb_intf;
  72         pusbd = interface_to_usbdev(usb_intf);
  73         pdvobjpriv->pusbdev = pusbd;
  74         usb_set_intfdata(usb_intf, pdvobjpriv);
  75
  76         pdvobjpriv->RtNumInPipes = 0;
  77         pdvobjpriv->RtNumOutPipes = 0;
  78
  79         phost_conf = pusbd->actconfig;
  80         pconf_desc = &phost_conf->desc;
  81
  82         phost_iface = &usb_intf->altsetting[0];
  83         piface_desc = &phost_iface->desc;
  84
  85         pdvobjpriv->NumInterfaces = pconf_desc->bNumInterfaces;
  86         pdvobjpriv->InterfaceNumber = piface_desc->bInterfaceNumber;
  87         pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;
  88
  89         for (i = 0; i < pdvobjpriv->nr_endpoint; i++) {
  90                 int ep_num;
  91                 pendp_desc = &phost_iface->endpoint[i].desc;
  92
  93                 ep_num = usb_endpoint_num(pendp_desc);
  94
  95                 if (usb_endpoint_is_bulk_in(pendp_desc)) {
  96                         pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = ep_num;
  97                         pdvobjpriv->RtNumInPipes++;
  98                 } else if (usb_endpoint_is_int_in(pendp_desc)) {
  99                         pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = ep_num;
 100                         pdvobjpriv->RtNumInPipes++;
 101                 } else if (usb_endpoint_is_bulk_out(pendp_desc)) {
 102                         pdvobjpriv->RtOutPipe[pdvobjpriv->RtNumOutPipes] =
 103                                 ep_num;
 104                         pdvobjpriv->RtNumOutPipes++;
 105                 }
 106                 pdvobjpriv->ep_num[i] = ep_num;
 107         }
 108
 109         if (pusbd->speed == USB_SPEED_HIGH)
 110                 pdvobjpriv->ishighspeed = true;
 111         else
 112                 pdvobjpriv->ishighspeed = false;
 113
 114         mutex_init(&pdvobjpriv->usb_vendor_req_mutex);
 115         pdvobjpriv->usb_vendor_req_buf = kzalloc(MAX_USB_IO_CTL_SIZE, GFP_KERNEL);
 116
 117         if (!pdvobjpriv->usb_vendor_req_buf) {
 118                 usb_set_intfdata(usb_intf, NULL);
 119                 kfree(pdvobjpriv);
 120                 return NULL;
 121         }
 122         usb_get_dev(pusbd);
 123
 124         return pdvobjpriv;
 125 }
 126
 127 static void usb_dvobj_deinit(struct usb_interface *usb_intf)
 128 {
 129         struct dvobj_priv *dvobj = usb_get_intfdata(usb_intf);
 130
 131         usb_set_intfdata(usb_intf, NULL);
 132         if (dvobj) {
 133                 /* Modify condition for 92DU DMDP 2010.11.18, by Thomas */
 134                 if ((dvobj->NumInterfaces != 2 &&
 135                     dvobj->NumInterfaces != 3) ||
 136                     (dvobj->InterfaceNumber == 1)) {
 137                         if (interface_to_usbdev(usb_intf)->state !=
 138                             USB_STATE_NOTATTACHED) {
 139                                 /* If we didn't unplug usb dongle and
 140                                  * remove/insert module, driver fails
 141                                  * on sitesurvey for the first time when
 142                                  * device is up . Reset usb port for sitesurvey
 143                                  * fail issue. */
 144                                 pr_debug("usb attached..., try to reset usb device\n");
 145                                 usb_reset_device(interface_to_usbdev(usb_intf));
 146                         }
 147                 }
 148
 149                 kfree(dvobj->usb_vendor_req_buf);
 150                 mutex_destroy(&dvobj->usb_vendor_req_mutex);
 151                 kfree(dvobj);
 152         }
 153
 154         usb_put_dev(interface_to_usbdev(usb_intf));
 155
 156 }
 157
 158 static void usb_intf_start(struct adapter *padapter)
 159 {
 160         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+usb_intf_start\n"));
 161
 162         rtw_hal_inirp_init(padapter);
 163
 164         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-usb_intf_start\n"));
 165 }
 166
 167 static void usb_intf_stop(struct adapter *padapter)
 168 {
 169         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+usb_intf_stop\n"));
 170
 171         /* disable_hw_interrupt */
 172         if (!padapter->bSurpriseRemoved) {
 173                 /* device still exists, so driver can do i/o operation */
 174                 /* TODO: */
 175                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 176                          ("SurpriseRemoved == false\n"));
 177         }
 178
 179         /* cancel in irp */
 180         rtw_hal_inirp_deinit(padapter);
 181
 182         /* cancel out irp */
 183         usb_write_port_cancel(padapter);
 184
 185         /* todo:cancel other irps */
 186
 187         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-usb_intf_stop\n"));
 188 }
 189
 190 static void rtw_dev_unload(struct adapter *padapter)
 191 {
 192         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_dev_unload\n"));
 193
 194         if (padapter->bup) {
 195                 pr_debug("===> rtw_dev_unload\n");
 196                 padapter->bDriverStopped = true;
 197                 if (padapter->xmitpriv.ack_tx)
 198                         rtw_ack_tx_done(&padapter->xmitpriv, RTW_SCTX_DONE_DRV_STOP);
 199                 /* s3. */
 200                 if (padapter->intf_stop)
 201                         padapter->intf_stop(padapter);
 202                 /* s4. */
 203                 if (!padapter->pwrctrlpriv.bInternalAutoSuspend)
 204                         rtw_stop_drv_threads(padapter);
 205
 206                 /* s5. */
 207                 if (!padapter->bSurpriseRemoved) {
 208                         rtw_hal_deinit(padapter);
 209                         padapter->bSurpriseRemoved = true;
 210                 }
 211
 212                 padapter->bup = false;
 213         } else {
 214                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 215                          ("r871x_dev_unload():padapter->bup == false\n"));
 216         }
 217
 218         pr_debug("<=== rtw_dev_unload\n");
 219
 220         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-rtw_dev_unload\n"));
 221 }
 222
 223 static int rtw_suspend(struct usb_interface *pusb_intf, pm_message_t message)
 224 {
 225         struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
 226         struct adapter *padapter = dvobj->if1;
 227         struct net_device *pnetdev = padapter->pnetdev;
 228         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 229         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 230         u32 start_time = jiffies;
 231
 232         pr_debug("==> %s (%s:%d)\n", __func__, current->comm, current->pid);
 233
 234         if ((!padapter->bup) || (padapter->bDriverStopped) ||
 235             (padapter->bSurpriseRemoved)) {
 236                 pr_debug("padapter->bup=%d bDriverStopped=%d bSurpriseRemoved = %d\n",
 237                         padapter->bup, padapter->bDriverStopped,
 238                         padapter->bSurpriseRemoved);
 239                 goto exit;
 240         }
 241
 242         pwrpriv->bInSuspend = true;
 243         rtw_cancel_all_timer(padapter);
 244         LeaveAllPowerSaveMode(padapter);
 245
 246         _enter_pwrlock(&pwrpriv->lock);
 247         /* s1. */
 248         if (pnetdev) {
 249                 netif_carrier_off(pnetdev);
 250                 netif_tx_stop_all_queues(pnetdev);
 251         }
 252
 253         /* s2. */
 254         rtw_disassoc_cmd(padapter, 0, false);
 255
 256         if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) &&
 257             check_fwstate(pmlmepriv, _FW_LINKED)) {
 258                 pr_debug("%s:%d %s(%pM), length:%d assoc_ssid.length:%d\n",
 259                         __func__, __LINE__,
 260                         pmlmepriv->cur_network.network.Ssid.Ssid,
 261                         pmlmepriv->cur_network.network.MacAddress,
 262                         pmlmepriv->cur_network.network.Ssid.SsidLength,
 263                         pmlmepriv->assoc_ssid.SsidLength);
 264
 265                 pmlmepriv->to_roaming = 1;
 266         }
 267         /* s2-2.  indicate disconnect to os */
 268         rtw_indicate_disconnect(padapter);
 269         /* s2-3. */
 270         rtw_free_assoc_resources(padapter);
 271         /* s2-4. */
 272         rtw_free_network_queue(padapter, true);
 273
 274         rtw_dev_unload(padapter);
 275         _exit_pwrlock(&pwrpriv->lock);
 276
 277         if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY))
 278                 rtw_indicate_scan_done(padapter, 1);
 279
 280         if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING))
 281                 rtw_indicate_disconnect(padapter);
 282
 283 exit:
 284         pr_debug("<===  %s .............. in %dms\n", __func__,
 285                  rtw_get_passing_time_ms(start_time));
 286
 287         return 0;
 288 }
 289
 290 static int rtw_resume_process(struct adapter *padapter)
 291 {
 292         struct net_device *pnetdev;
 293         struct pwrctrl_priv *pwrpriv = NULL;
 294         int ret = -1;
 295         u32 start_time = jiffies;
 296
 297         pr_debug("==> %s (%s:%d)\n", __func__, current->comm, current->pid);
 298
 299         if (padapter) {
 300                 pnetdev = padapter->pnetdev;
 301                 pwrpriv = &padapter->pwrctrlpriv;
 302         } else {
 303                 goto exit;
 304         }
 305
 306         _enter_pwrlock(&pwrpriv->lock);
 307         rtw_reset_drv_sw(padapter);
 308         pwrpriv->bkeepfwalive = false;
 309
 310         pr_debug("bkeepfwalive(%x)\n", pwrpriv->bkeepfwalive);
 311         if (pm_netdev_open(pnetdev, true) != 0)
 312                 goto exit;
 313
 314         netif_device_attach(pnetdev);
 315         netif_carrier_on(pnetdev);
 316
 317         _exit_pwrlock(&pwrpriv->lock);
 318
 319         rtw_roaming(padapter, NULL);
 320
 321         ret = 0;
 322 exit:
 323         if (pwrpriv)
 324                 pwrpriv->bInSuspend = false;
 325         pr_debug("<===  %s return %d.............. in %dms\n", __func__,
 326                 ret, rtw_get_passing_time_ms(start_time));
 327
 328         return ret;
 329 }
 330
 331 static int rtw_resume(struct usb_interface *pusb_intf)
 332 {
 333         struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
 334         struct adapter *padapter = dvobj->if1;
 335
 336         return rtw_resume_process(padapter);
 337 }
 338
 339 /*
 340  * drv_init() - a device potentially for us
 341  *
 342  * notes: drv_init() is called when the bus driver has located
 343  * a card for us to support.
 344  *        We accept the new device by returning 0.
 345  */
 346
 347 static struct adapter *rtw_usb_if1_init(struct dvobj_priv *dvobj,
 348         struct usb_interface *pusb_intf, const struct usb_device_id *pdid)
 349 {
 350         struct adapter *padapter = NULL;
 351         struct net_device *pnetdev = NULL;
 352         struct net_device *pmondev;
 353         int status = _FAIL;
 354
 355         padapter = (struct adapter *)vzalloc(sizeof(*padapter));
 356         if (padapter == NULL)
 357                 goto exit;
 358         padapter->dvobj = dvobj;
 359         dvobj->if1 = padapter;
 360
 361         padapter->bDriverStopped = true;
 362         mutex_init(&padapter->hw_init_mutex);
 363         padapter->chip_type = RTL8188E;
 364
 365         pnetdev = rtw_init_netdev(padapter);
 366         if (pnetdev == NULL)
 367                 goto free_adapter;
 368         SET_NETDEV_DEV(pnetdev, dvobj_to_dev(dvobj));
 369         padapter = rtw_netdev_priv(pnetdev);
 370
 371         if (padapter->registrypriv.monitor_enable) {
 372                 pmondev = rtl88eu_mon_init();
 373                 if (pmondev == NULL)
 374                         netdev_warn(pnetdev, "Failed to initialize monitor interface");
 375                 padapter->pmondev = pmondev;
 376         }
 377
 378         /* step 2. hook HalFunc, allocate HalData */
 379         hal_set_hal_ops(padapter);
 380
 381         padapter->intf_start = &usb_intf_start;
 382         padapter->intf_stop = &usb_intf_stop;
 383
 384         /* step read_chip_version */
 385         rtw_hal_read_chip_version(padapter);
 386
 387         /* step usb endpoint mapping */
 388         rtw_hal_chip_configure(padapter);
 389
 390         /* step read efuse/eeprom data and get mac_addr */
 391         rtw_hal_read_chip_info(padapter);
 392
 393         /* step 5. */
 394         if (rtw_init_drv_sw(padapter) == _FAIL) {
 395                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 396                          ("Initialize driver software resource Failed!\n"));
 397                 goto free_hal_data;
 398         }
 399
 400 #ifdef CONFIG_PM
 401         if (padapter->pwrctrlpriv.bSupportRemoteWakeup) {
 402                 dvobj->pusbdev->do_remote_wakeup = 1;
 403                 pusb_intf->needs_remote_wakeup = 1;
 404                 device_init_wakeup(&pusb_intf->dev, 1);
 405                 pr_debug("\n  padapter->pwrctrlpriv.bSupportRemoteWakeup~~~~~~\n");
 406                 pr_debug("\n  padapter->pwrctrlpriv.bSupportRemoteWakeup~~~[%d]~~~\n",
 407                         device_may_wakeup(&pusb_intf->dev));
 408         }
 409 #endif
 410
 411         /* 2012-07-11 Move here to prevent the 8723AS-VAU BT auto
 412          * suspend influence */
 413         if (usb_autopm_get_interface(pusb_intf) < 0)
 414                         pr_debug("can't get autopm:\n");
 415
 416         /*  alloc dev name after read efuse. */
 417         rtw_init_netdev_name(pnetdev, padapter->registrypriv.ifname);
 418         rtw_macaddr_cfg(padapter->eeprompriv.mac_addr);
 419         memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);
 420         pr_debug("MAC Address from pnetdev->dev_addr =  %pM\n",
 421                 pnetdev->dev_addr);
 422
 423         /* step 6. Tell the network stack we exist */
 424         if (register_netdev(pnetdev) != 0) {
 425                 RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("register_netdev() failed\n"));
 426                 goto free_hal_data;
 427         }
 428
 429         pr_debug("bDriverStopped:%d, bSurpriseRemoved:%d, bup:%d, hw_init_completed:%d\n"
 430                 , padapter->bDriverStopped
 431                 , padapter->bSurpriseRemoved
 432                 , padapter->bup
 433                 , padapter->hw_init_completed
 434         );
 435
 436         status = _SUCCESS;
 437
 438 free_hal_data:
 439         if (status != _SUCCESS)
 440                 kfree(padapter->HalData);
 441 free_adapter:
 442         if (status != _SUCCESS) {
 443                 if (pnetdev)
 444                         rtw_free_netdev(pnetdev);
 445                 else if (padapter)
 446                         vfree(padapter);
 447                 padapter = NULL;
 448         }
 449 exit:
 450         return padapter;
 451 }
 452
 453 static void rtw_usb_if1_deinit(struct adapter *if1)
 454 {
 455         struct net_device *pnetdev = if1->pnetdev;
 456         struct mlme_priv *pmlmepriv = &if1->mlmepriv;
 457
 458         if (check_fwstate(pmlmepriv, _FW_LINKED))
 459                 rtw_disassoc_cmd(if1, 0, false);
 460
 461 #ifdef CONFIG_88EU_AP_MODE
 462         free_mlme_ap_info(if1);
 463 #endif
 464
 465         if (pnetdev) {
 466                 /* will call netdev_close() */
 467                 unregister_netdev(pnetdev);
 468                 rtw_proc_remove_one(pnetdev);
 469         }
 470         rtl88eu_mon_deinit(if1->pmondev);
 471         rtw_cancel_all_timer(if1);
 472
 473         rtw_dev_unload(if1);
 474         pr_debug("+r871xu_dev_remove, hw_init_completed=%d\n",
 475                 if1->hw_init_completed);
 476         rtw_free_drv_sw(if1);
 477         if (pnetdev)
 478                 rtw_free_netdev(pnetdev);
 479 }
 480
 481 static int rtw_drv_init(struct usb_interface *pusb_intf, const struct usb_device_id *pdid)
 482 {
 483         struct adapter *if1 = NULL;
 484         struct dvobj_priv *dvobj;
 485
 486         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_drv_init\n"));
 487
 488         /* Initialize dvobj_priv */
 489         dvobj = usb_dvobj_init(pusb_intf);
 490         if (dvobj == NULL) {
 491                 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
 492                          ("initialize device object priv Failed!\n"));
 493                 goto exit;
 494         }
 495
 496         if1 = rtw_usb_if1_init(dvobj, pusb_intf, pdid);
 497         if (if1 == NULL) {
 498                 pr_debug("rtw_init_primarystruct adapter Failed!\n");
 499                 goto free_dvobj;
 500         }
 501
 502         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-871x_drv - drv_init, success!\n"));
 503
 504         return 0;
 505
 506 free_dvobj:
 507         usb_dvobj_deinit(pusb_intf);
 508 exit:
 509         return -ENODEV;
 510 }
 511
 512 /*
 513  * dev_remove() - our device is being removed
 514 */
 515 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove() => how to recognize both */
 516 static void rtw_dev_remove(struct usb_interface *pusb_intf)
 517 {
 518         struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
 519         struct adapter *padapter = dvobj->if1;
 520
 521         pr_debug("+rtw_dev_remove\n");
 522         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+dev_remove()\n"));
 523
 524         if (!pusb_intf->unregistering)
 525                 padapter->bSurpriseRemoved = true;
 526
 527         rtw_pm_set_ips(padapter, IPS_NONE);
 528         rtw_pm_set_lps(padapter, PS_MODE_ACTIVE);
 529
 530         LeaveAllPowerSaveMode(padapter);
 531
 532         rtw_usb_if1_deinit(padapter);
 533
 534         usb_dvobj_deinit(pusb_intf);
 535
 536         RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-dev_remove()\n"));
 537         pr_debug("-r871xu_dev_remove, done\n");
 538 }
 539
 540 static struct usb_driver rtl8188e_usb_drv = {
 541         .name = "r8188eu",
 542         .probe = rtw_drv_init,
 543         .disconnect = rtw_dev_remove,
 544         .id_table = rtw_usb_id_tbl,
 545         .suspend =  rtw_suspend,
 546         .resume = rtw_resume,
 547         .reset_resume = rtw_resume,
 548 };
 549
 550 module_usb_driver(rtl8188e_usb_drv)