drivers/staging/rtl8192e/rtl8192e/rtl_core.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
   4  *
   5  * Based on the r8180 driver, which is:
   6  * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
   7  *
   8  * Contact Information: wlanfae <wlanfae@realtek.com>
   9  */
  10 #include <linux/uaccess.h>
  11 #include <linux/pci.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/ieee80211.h>
  14 #include "rtl_core.h"
  15 #include "r8192E_phy.h"
  16 #include "r8192E_phyreg.h"
  17 #include "r8190P_rtl8256.h"
  18 #include "r8192E_cmdpkt.h"
  19
  20 #include "rtl_wx.h"
  21 #include "rtl_dm.h"
  22
  23 #include "rtl_pm.h"
  24
  25 int hwwep = 1;
  26 static char *ifname = "wlan%d";
  27
  28 static struct pci_device_id rtl8192_pci_id_tbl[] = {
  29         {PCI_DEVICE(0x10ec, 0x8192)},
  30         {PCI_DEVICE(0x07aa, 0x0044)},
  31         {PCI_DEVICE(0x07aa, 0x0047)},
  32         {}
  33 };
  34
  35 MODULE_DEVICE_TABLE(pci, rtl8192_pci_id_tbl);
  36
  37 static int _rtl92e_pci_probe(struct pci_dev *pdev,
  38                              const struct pci_device_id *id);
  39 static void _rtl92e_pci_disconnect(struct pci_dev *pdev);
  40 static irqreturn_t _rtl92e_irq(int irq, void *netdev);
  41
  42 static SIMPLE_DEV_PM_OPS(rtl92e_pm_ops, rtl92e_suspend, rtl92e_resume);
  43
  44 static struct pci_driver rtl8192_pci_driver = {
  45         .name = DRV_NAME,       /* Driver name   */
  46         .id_table = rtl8192_pci_id_tbl, /* PCI_ID table  */
  47         .probe  = _rtl92e_pci_probe,    /* probe fn      */
  48         .remove  = _rtl92e_pci_disconnect,      /* remove fn */
  49         .driver.pm = &rtl92e_pm_ops,
  50 };
  51
  52 static short _rtl92e_is_tx_queue_empty(struct net_device *dev);
  53 static void _rtl92e_watchdog_wq_cb(void *data);
  54 static void _rtl92e_watchdog_timer_cb(struct timer_list *t);
  55 static void _rtl92e_hard_data_xmit(struct sk_buff *skb, struct net_device *dev,
  56                                    int rate);
  57 static int _rtl92e_hard_start_xmit(struct sk_buff *skb, struct net_device *dev);
  58 static void _rtl92e_tx_cmd(struct net_device *dev, struct sk_buff *skb);
  59 static short _rtl92e_tx(struct net_device *dev, struct sk_buff *skb);
  60 static short _rtl92e_pci_initdescring(struct net_device *dev);
  61 static void _rtl92e_irq_tx_tasklet(struct tasklet_struct *t);
  62 static void _rtl92e_irq_rx_tasklet(struct tasklet_struct *t);
  63 static void _rtl92e_cancel_deferred_work(struct r8192_priv *priv);
  64 static int _rtl92e_up(struct net_device *dev);
  65 static int _rtl92e_try_up(struct net_device *dev);
  66 static int _rtl92e_down(struct net_device *dev, bool shutdownrf);
  67 static void _rtl92e_restart(void *data);
  68
  69 /****************************************************************************
  70  *  -----------------------------IO STUFF-------------------------
  71  ****************************************************************************/
  72
  73 u8 rtl92e_readb(struct net_device *dev, int x)
  74 {
  75         return 0xff & readb((u8 __iomem *)dev->mem_start + x);
  76 }
  77
  78 u32 rtl92e_readl(struct net_device *dev, int x)
  79 {
  80         return readl((u8 __iomem *)dev->mem_start + x);
  81 }
  82
  83 u16 rtl92e_readw(struct net_device *dev, int x)
  84 {
  85         return readw((u8 __iomem *)dev->mem_start + x);
  86 }
  87
  88 void rtl92e_writeb(struct net_device *dev, int x, u8 y)
  89 {
  90         writeb(y, (u8 __iomem *)dev->mem_start + x);
  91
  92         udelay(20);
  93 }
  94
  95 void rtl92e_writel(struct net_device *dev, int x, u32 y)
  96 {
  97         writel(y, (u8 __iomem *)dev->mem_start + x);
  98
  99         udelay(20);
 100 }
 101
 102 void rtl92e_writew(struct net_device *dev, int x, u16 y)
 103 {
 104         writew(y, (u8 __iomem *)dev->mem_start + x);
 105
 106         udelay(20);
 107 }
 108
 109 /****************************************************************************
 110  *  -----------------------------GENERAL FUNCTION-------------------------
 111  ****************************************************************************/
 112 bool rtl92e_set_rf_state(struct net_device *dev,
 113                          enum rt_rf_power_state state_to_set,
 114                          RT_RF_CHANGE_SOURCE change_source)
 115 {
 116         struct r8192_priv *priv = rtllib_priv(dev);
 117         struct rtllib_device *ieee = priv->rtllib;
 118         bool action_allowed = false;
 119         bool connect_by_ssid = false;
 120         enum rt_rf_power_state rt_state;
 121         u16 rf_wait_counter = 0;
 122         unsigned long flag;
 123
 124         while (true) {
 125                 spin_lock_irqsave(&priv->rf_ps_lock, flag);
 126                 if (priv->rf_change_in_progress) {
 127                         spin_unlock_irqrestore(&priv->rf_ps_lock, flag);
 128
 129                         while (priv->rf_change_in_progress) {
 130                                 rf_wait_counter++;
 131                                 mdelay(1);
 132
 133                                 if (rf_wait_counter > 100) {
 134                                         netdev_warn(dev,
 135                                                     "%s(): Timeout waiting for RF change.\n",
 136                                                     __func__);
 137                                         return false;
 138                                 }
 139                         }
 140                 } else {
 141                         priv->rf_change_in_progress = true;
 142                         spin_unlock_irqrestore(&priv->rf_ps_lock, flag);
 143                         break;
 144                 }
 145         }
 146
 147         rt_state = priv->rtllib->rf_power_state;
 148
 149         switch (state_to_set) {
 150         case rf_on:
 151                 priv->rtllib->rf_off_reason &= (~change_source);
 152
 153                 if ((change_source == RF_CHANGE_BY_HW) && priv->hw_radio_off)
 154                         priv->hw_radio_off = false;
 155
 156                 if (!priv->rtllib->rf_off_reason) {
 157                         priv->rtllib->rf_off_reason = 0;
 158                         action_allowed = true;
 159
 160                         if (rt_state == rf_off &&
 161                             change_source >= RF_CHANGE_BY_HW)
 162                                 connect_by_ssid = true;
 163                 }
 164                 break;
 165
 166         case rf_off:
 167
 168                 if (priv->rtllib->iw_mode == IW_MODE_INFRA) {
 169                         if ((priv->rtllib->rf_off_reason > RF_CHANGE_BY_IPS) ||
 170                             (change_source > RF_CHANGE_BY_IPS)) {
 171                                 if (ieee->link_state == MAC80211_LINKED)
 172                                         priv->blinked_ingpio = true;
 173                                 else
 174                                         priv->blinked_ingpio = false;
 175                                 rtllib_mgnt_disconnect(priv->rtllib,
 176                                                       WLAN_REASON_DISASSOC_STA_HAS_LEFT);
 177                         }
 178                 }
 179                 if ((change_source == RF_CHANGE_BY_HW) && !priv->hw_radio_off)
 180                         priv->hw_radio_off = true;
 181                 priv->rtllib->rf_off_reason |= change_source;
 182                 action_allowed = true;
 183                 break;
 184
 185         case rf_sleep:
 186                 priv->rtllib->rf_off_reason |= change_source;
 187                 action_allowed = true;
 188                 break;
 189
 190         default:
 191                 break;
 192         }
 193
 194         if (action_allowed) {
 195                 rtl92e_set_rf_power_state(dev, state_to_set);
 196                 if (state_to_set == rf_on) {
 197                         if (connect_by_ssid && priv->blinked_ingpio) {
 198                                 schedule_delayed_work(
 199                                          &ieee->associate_procedure_wq, 0);
 200                                 priv->blinked_ingpio = false;
 201                         }
 202                 }
 203         }
 204
 205         spin_lock_irqsave(&priv->rf_ps_lock, flag);
 206         priv->rf_change_in_progress = false;
 207         spin_unlock_irqrestore(&priv->rf_ps_lock, flag);
 208         return action_allowed;
 209 }
 210
 211 static short _rtl92e_check_nic_enough_desc(struct net_device *dev, int prio)
 212 {
 213         struct r8192_priv *priv = rtllib_priv(dev);
 214         struct rtl8192_tx_ring *ring = &priv->tx_ring[prio];
 215
 216         if (ring->entries - skb_queue_len(&ring->queue) >= 2)
 217                 return 1;
 218         return 0;
 219 }
 220
 221 static void _rtl92e_tx_timeout(struct net_device *dev, unsigned int txqueue)
 222 {
 223         struct r8192_priv *priv = rtllib_priv(dev);
 224
 225         schedule_work(&priv->reset_wq);
 226         netdev_info(dev, "TXTIMEOUT");
 227 }
 228
 229 static void _rtl92e_update_cap(struct net_device *dev, u16 cap)
 230 {
 231         struct r8192_priv *priv = rtllib_priv(dev);
 232         struct rtllib_network *net = &priv->rtllib->current_network;
 233         bool            ShortPreamble;
 234
 235         if (cap & WLAN_CAPABILITY_SHORT_PREAMBLE) {
 236                 if (priv->dot11_current_preamble_mode != PREAMBLE_SHORT) {
 237                         ShortPreamble = true;
 238                         priv->dot11_current_preamble_mode = PREAMBLE_SHORT;
 239                         priv->rtllib->set_hw_reg_handler(dev, HW_VAR_ACK_PREAMBLE,
 240                                         (unsigned char *)&ShortPreamble);
 241                 }
 242         } else {
 243                 if (priv->dot11_current_preamble_mode != PREAMBLE_LONG) {
 244                         ShortPreamble = false;
 245                         priv->dot11_current_preamble_mode = PREAMBLE_LONG;
 246                         priv->rtllib->set_hw_reg_handler(dev, HW_VAR_ACK_PREAMBLE,
 247                                               (unsigned char *)&ShortPreamble);
 248                 }
 249         }
 250
 251         if (net->mode & (WIRELESS_MODE_G | WIRELESS_MODE_N_24G)) {
 252                 u8      slot_time_val;
 253                 u8      cur_slot_time = priv->slot_time;
 254
 255                 if ((cap & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
 256                    (!priv->rtllib->ht_info->current_rt2rt_long_slot_time)) {
 257                         if (cur_slot_time != SHORT_SLOT_TIME) {
 258                                 slot_time_val = SHORT_SLOT_TIME;
 259                                 priv->rtllib->set_hw_reg_handler(dev,
 260                                          HW_VAR_SLOT_TIME, &slot_time_val);
 261                         }
 262                 } else {
 263                         if (cur_slot_time != NON_SHORT_SLOT_TIME) {
 264                                 slot_time_val = NON_SHORT_SLOT_TIME;
 265                                 priv->rtllib->set_hw_reg_handler(dev,
 266                                          HW_VAR_SLOT_TIME, &slot_time_val);
 267                         }
 268                 }
 269         }
 270 }
 271
 272 static const struct rtllib_qos_parameters def_qos_parameters = {
 273         {cpu_to_le16(3), cpu_to_le16(3), cpu_to_le16(3), cpu_to_le16(3)},
 274         {cpu_to_le16(7), cpu_to_le16(7), cpu_to_le16(7), cpu_to_le16(7)},
 275         {2, 2, 2, 2},
 276         {0, 0, 0, 0},
 277         {0, 0, 0, 0}
 278 };
 279
 280 static void _rtl92e_update_beacon(void *data)
 281 {
 282         struct r8192_priv *priv = container_of(data, struct r8192_priv, update_beacon_wq.work);
 283         struct net_device *dev = priv->rtllib->dev;
 284         struct rtllib_device *ieee = priv->rtllib;
 285         struct rtllib_network *net = &ieee->current_network;
 286
 287         if (ieee->ht_info->current_ht_support)
 288                 HT_update_self_and_peer_setting(ieee, net);
 289         ieee->ht_info->current_rt2rt_long_slot_time = net->bssht.bd_rt2rt_long_slot_time;
 290         _rtl92e_update_cap(dev, net->capability);
 291 }
 292
 293 static void _rtl92e_qos_activate(void *data)
 294 {
 295         struct r8192_priv *priv = container_of(data, struct r8192_priv, qos_activate);
 296         struct net_device *dev = priv->rtllib->dev;
 297         int i;
 298
 299         mutex_lock(&priv->mutex);
 300         if (priv->rtllib->link_state != MAC80211_LINKED)
 301                 goto success;
 302
 303         for (i = 0; i <  QOS_QUEUE_NUM; i++)
 304                 priv->rtllib->set_hw_reg_handler(dev, HW_VAR_AC_PARAM, (u8 *)(&i));
 305
 306 success:
 307         mutex_unlock(&priv->mutex);
 308 }
 309
 310 static int _rtl92e_qos_handle_probe_response(struct r8192_priv *priv,
 311                                              int active_network,
 312                                              struct rtllib_network *network)
 313 {
 314         int ret = 0;
 315         u32 size = sizeof(struct rtllib_qos_parameters);
 316
 317         if (priv->rtllib->link_state != MAC80211_LINKED)
 318                 return ret;
 319
 320         if (priv->rtllib->iw_mode != IW_MODE_INFRA)
 321                 return ret;
 322
 323         if (network->flags & NETWORK_HAS_QOS_MASK) {
 324                 if (active_network &&
 325                                 (network->flags & NETWORK_HAS_QOS_PARAMETERS))
 326                         network->qos_data.active = network->qos_data.supported;
 327
 328                 if ((network->qos_data.active == 1) && (active_network == 1) &&
 329                                 (network->flags & NETWORK_HAS_QOS_PARAMETERS) &&
 330                                 (network->qos_data.old_param_count !=
 331                                 network->qos_data.param_count)) {
 332                         network->qos_data.old_param_count =
 333                                 network->qos_data.param_count;
 334                         priv->rtllib->wmm_acm = network->qos_data.wmm_acm;
 335                         schedule_work(&priv->qos_activate);
 336                 }
 337         } else {
 338                 memcpy(&priv->rtllib->current_network.qos_data.parameters,
 339                        &def_qos_parameters, size);
 340
 341                 if ((network->qos_data.active == 1) && (active_network == 1))
 342                         schedule_work(&priv->qos_activate);
 343
 344                 network->qos_data.active = 0;
 345                 network->qos_data.supported = 0;
 346         }
 347
 348         return 0;
 349 }
 350
 351 static int _rtl92e_handle_beacon(struct net_device *dev,
 352                                  struct rtllib_beacon *beacon,
 353                                  struct rtllib_network *network)
 354 {
 355         struct r8192_priv *priv = rtllib_priv(dev);
 356
 357         _rtl92e_qos_handle_probe_response(priv, 1, network);
 358
 359         schedule_delayed_work(&priv->update_beacon_wq, 0);
 360         return 0;
 361 }
 362
 363 static int _rtl92e_qos_assoc_resp(struct r8192_priv *priv,
 364                                   struct rtllib_network *network)
 365 {
 366         unsigned long flags;
 367         u32 size = sizeof(struct rtllib_qos_parameters);
 368         int set_qos_param = 0;
 369
 370         if (!priv || !network)
 371                 return 0;
 372
 373         if (priv->rtllib->link_state != MAC80211_LINKED)
 374                 return 0;
 375
 376         if (priv->rtllib->iw_mode != IW_MODE_INFRA)
 377                 return 0;
 378
 379         spin_lock_irqsave(&priv->rtllib->lock, flags);
 380         if (network->flags & NETWORK_HAS_QOS_PARAMETERS) {
 381                 memcpy(&priv->rtllib->current_network.qos_data.parameters,
 382                        &network->qos_data.parameters,
 383                        sizeof(struct rtllib_qos_parameters));
 384                 priv->rtllib->current_network.qos_data.active = 1;
 385                 priv->rtllib->wmm_acm = network->qos_data.wmm_acm;
 386                 set_qos_param = 1;
 387                 priv->rtllib->current_network.qos_data.old_param_count =
 388                         priv->rtllib->current_network.qos_data.param_count;
 389                 priv->rtllib->current_network.qos_data.param_count =
 390                         network->qos_data.param_count;
 391         } else {
 392                 memcpy(&priv->rtllib->current_network.qos_data.parameters,
 393                 &def_qos_parameters, size);
 394                 priv->rtllib->current_network.qos_data.active = 0;
 395                 priv->rtllib->current_network.qos_data.supported = 0;
 396                 set_qos_param = 1;
 397         }
 398
 399         spin_unlock_irqrestore(&priv->rtllib->lock, flags);
 400
 401         if (set_qos_param == 1) {
 402                 rtl92e_dm_init_edca_turbo(priv->rtllib->dev);
 403                 schedule_work(&priv->qos_activate);
 404         }
 405         return 0;
 406 }
 407
 408 static int _rtl92e_handle_assoc_response(struct net_device *dev,
 409                                  struct rtllib_assoc_response_frame *resp,
 410                                  struct rtllib_network *network)
 411 {
 412         struct r8192_priv *priv = rtllib_priv(dev);
 413
 414         _rtl92e_qos_assoc_resp(priv, network);
 415         return 0;
 416 }
 417
 418 void rtl92e_config_rate(struct net_device *dev, u16 *rate_config)
 419 {
 420         struct r8192_priv *priv = rtllib_priv(dev);
 421         struct rtllib_network *net;
 422         u8 i = 0, basic_rate = 0;
 423
 424         net = &priv->rtllib->current_network;
 425
 426         for (i = 0; i < net->rates_len; i++) {
 427                 basic_rate = net->rates[i] & 0x7f;
 428                 switch (basic_rate) {
 429                 case MGN_1M:
 430                         *rate_config |= RRSR_1M;
 431                         break;
 432                 case MGN_2M:
 433                         *rate_config |= RRSR_2M;
 434                         break;
 435                 case MGN_5_5M:
 436                         *rate_config |= RRSR_5_5M;
 437                         break;
 438                 case MGN_11M:
 439                         *rate_config |= RRSR_11M;
 440                         break;
 441                 case MGN_6M:
 442                         *rate_config |= RRSR_6M;
 443                         break;
 444                 case MGN_9M:
 445                         *rate_config |= RRSR_9M;
 446                         break;
 447                 case MGN_12M:
 448                         *rate_config |= RRSR_12M;
 449                         break;
 450                 case MGN_18M:
 451                         *rate_config |= RRSR_18M;
 452                         break;
 453                 case MGN_24M:
 454                         *rate_config |= RRSR_24M;
 455                         break;
 456                 case MGN_36M:
 457                         *rate_config |= RRSR_36M;
 458                         break;
 459                 case MGN_48M:
 460                         *rate_config |= RRSR_48M;
 461                         break;
 462                 case MGN_54M:
 463                         *rate_config |= RRSR_54M;
 464                         break;
 465                 }
 466         }
 467
 468         for (i = 0; i < net->rates_ex_len; i++) {
 469                 basic_rate = net->rates_ex[i] & 0x7f;
 470                 switch (basic_rate) {
 471                 case MGN_1M:
 472                         *rate_config |= RRSR_1M;
 473                         break;
 474                 case MGN_2M:
 475                         *rate_config |= RRSR_2M;
 476                         break;
 477                 case MGN_5_5M:
 478                         *rate_config |= RRSR_5_5M;
 479                         break;
 480                 case MGN_11M:
 481                         *rate_config |= RRSR_11M;
 482                         break;
 483                 case MGN_6M:
 484                         *rate_config |= RRSR_6M;
 485                         break;
 486                 case MGN_9M:
 487                         *rate_config |= RRSR_9M;
 488                         break;
 489                 case MGN_12M:
 490                         *rate_config |= RRSR_12M;
 491                         break;
 492                 case MGN_18M:
 493                         *rate_config |= RRSR_18M;
 494                         break;
 495                 case MGN_24M:
 496                         *rate_config |= RRSR_24M;
 497                         break;
 498                 case MGN_36M:
 499                         *rate_config |= RRSR_36M;
 500                         break;
 501                 case MGN_48M:
 502                         *rate_config |= RRSR_48M;
 503                         break;
 504                 case MGN_54M:
 505                         *rate_config |= RRSR_54M;
 506                         break;
 507                 }
 508         }
 509 }
 510
 511 static void _rtl92e_refresh_support_rate(struct r8192_priv *priv)
 512 {
 513         struct rtllib_device *ieee = priv->rtllib;
 514
 515         if (ieee->mode == WIRELESS_MODE_N_24G) {
 516                 memcpy(ieee->reg_dot11ht_oper_rate_set,
 517                        ieee->reg_ht_supp_rate_set, 16);
 518                 memcpy(ieee->reg_dot11tx_ht_oper_rate_set,
 519                        ieee->reg_ht_supp_rate_set, 16);
 520
 521         } else {
 522                 memset(ieee->reg_dot11ht_oper_rate_set, 0, 16);
 523         }
 524 }
 525
 526 void rtl92e_set_wireless_mode(struct net_device *dev, u8 wireless_mode)
 527 {
 528         struct r8192_priv *priv = rtllib_priv(dev);
 529         u8 support_mode = (WIRELESS_MODE_N_24G | WIRELESS_MODE_G | WIRELESS_MODE_B);
 530
 531         if ((wireless_mode == WIRELESS_MODE_AUTO) || ((wireless_mode & support_mode) == 0))
 532                 wireless_mode = WIRELESS_MODE_N_24G;
 533
 534         if ((wireless_mode & (WIRELESS_MODE_B | WIRELESS_MODE_G)) ==
 535             (WIRELESS_MODE_G | WIRELESS_MODE_B))
 536                 wireless_mode = WIRELESS_MODE_G;
 537
 538         priv->rtllib->mode = wireless_mode;
 539
 540         if (wireless_mode == WIRELESS_MODE_N_24G)
 541                 priv->rtllib->ht_info->enable_ht = 1;
 542         else
 543                 priv->rtllib->ht_info->enable_ht = 0;
 544
 545         _rtl92e_refresh_support_rate(priv);
 546 }
 547
 548 static int _rtl92e_sta_up(struct net_device *dev)
 549 {
 550         struct r8192_priv *priv = rtllib_priv(dev);
 551         struct rt_pwr_save_ctrl *psc = (struct rt_pwr_save_ctrl *)
 552                                         (&priv->rtllib->pwr_save_ctrl);
 553         bool init_status;
 554
 555         priv->up = 1;
 556         priv->rtllib->ieee_up = 1;
 557
 558         priv->up_first_time = 0;
 559         init_status = rtl92e_start_adapter(dev);
 560         if (!init_status) {
 561                 netdev_err(dev, "%s(): Initialization failed!\n", __func__);
 562                 return -1;
 563         }
 564
 565         RT_CLEAR_PS_LEVEL(psc, RT_RF_OFF_LEVL_HALT_NIC);
 566
 567         if (priv->polling_timer_on == 0)
 568                 rtl92e_check_rfctrl_gpio_timer(&priv->gpio_polling_timer);
 569
 570         if (priv->rtllib->link_state != MAC80211_LINKED)
 571                 rtllib_softmac_start_protocol(priv->rtllib);
 572         rtllib_reset_queue(priv->rtllib);
 573         _rtl92e_watchdog_timer_cb(&priv->watch_dog_timer);
 574
 575         if (!netif_queue_stopped(dev))
 576                 netif_start_queue(dev);
 577         else
 578                 netif_wake_queue(dev);
 579
 580         priv->bfirst_after_down = false;
 581         return 0;
 582 }
 583
 584 static int _rtl92e_sta_down(struct net_device *dev, bool shutdownrf)
 585 {
 586         struct r8192_priv *priv = rtllib_priv(dev);
 587         unsigned long flags = 0;
 588         u8 rf_in_progress_timeout = 0;
 589
 590         if (priv->up == 0)
 591                 return -1;
 592
 593         priv->rtllib->rtllib_ips_leave(dev);
 594
 595         if (priv->rtllib->link_state == MAC80211_LINKED)
 596                 rtl92e_leisure_ps_leave(dev);
 597
 598         priv->up = 0;
 599         priv->rtllib->ieee_up = 0;
 600         priv->bfirst_after_down = true;
 601         if (!netif_queue_stopped(dev))
 602                 netif_stop_queue(dev);
 603
 604         priv->rtllib->wpa_ie_len = 0;
 605         kfree(priv->rtllib->wpa_ie);
 606         priv->rtllib->wpa_ie = NULL;
 607         rtl92e_cam_reset(dev);
 608         memset(priv->rtllib->swcamtable, 0, sizeof(struct sw_cam_table) * 32);
 609         rtl92e_irq_disable(dev);
 610
 611         del_timer_sync(&priv->watch_dog_timer);
 612         _rtl92e_cancel_deferred_work(priv);
 613         cancel_delayed_work(&priv->rtllib->hw_wakeup_wq);
 614
 615         rtllib_softmac_stop_protocol(priv->rtllib);
 616         spin_lock_irqsave(&priv->rf_ps_lock, flags);
 617         while (priv->rf_change_in_progress) {
 618                 spin_unlock_irqrestore(&priv->rf_ps_lock, flags);
 619                 if (rf_in_progress_timeout > 100) {
 620                         spin_lock_irqsave(&priv->rf_ps_lock, flags);
 621                         break;
 622                 }
 623                 mdelay(1);
 624                 rf_in_progress_timeout++;
 625                 spin_lock_irqsave(&priv->rf_ps_lock, flags);
 626         }
 627         priv->rf_change_in_progress = true;
 628         spin_unlock_irqrestore(&priv->rf_ps_lock, flags);
 629         rtl92e_stop_adapter(dev, false);
 630         spin_lock_irqsave(&priv->rf_ps_lock, flags);
 631         priv->rf_change_in_progress = false;
 632         spin_unlock_irqrestore(&priv->rf_ps_lock, flags);
 633         udelay(100);
 634         memset(&priv->rtllib->current_network, 0,
 635                offsetof(struct rtllib_network, list));
 636
 637         return 0;
 638 }
 639
 640 static void _rtl92e_init_priv_handler(struct net_device *dev)
 641 {
 642         struct r8192_priv *priv = rtllib_priv(dev);
 643
 644         priv->rtllib->softmac_hard_start_xmit   = _rtl92e_hard_start_xmit;
 645         priv->rtllib->set_chan                  = rtl92e_set_channel;
 646         priv->rtllib->link_change               = rtl92e_link_change;
 647         priv->rtllib->softmac_data_hard_start_xmit = _rtl92e_hard_data_xmit;
 648         priv->rtllib->check_nic_enough_desc     = _rtl92e_check_nic_enough_desc;
 649         priv->rtllib->handle_assoc_response     = _rtl92e_handle_assoc_response;
 650         priv->rtllib->handle_beacon             = _rtl92e_handle_beacon;
 651         priv->rtllib->set_wireless_mode         = rtl92e_set_wireless_mode;
 652         priv->rtllib->leisure_ps_leave          = rtl92e_leisure_ps_leave;
 653         priv->rtllib->set_bw_mode_handler       = rtl92e_set_bw_mode;
 654
 655         priv->rtllib->sta_wake_up = rtl92e_hw_wakeup;
 656         priv->rtllib->enter_sleep_state = rtl92e_enter_sleep;
 657         priv->rtllib->ps_is_queue_empty = _rtl92e_is_tx_queue_empty;
 658
 659         priv->rtllib->get_nmode_support_by_sec_cfg = rtl92e_get_nmode_support_by_sec;
 660         priv->rtllib->get_half_nmode_support_by_aps_handler =
 661                                                 rtl92e_is_halfn_supported_by_ap;
 662
 663         priv->rtllib->set_hw_reg_handler = rtl92e_set_reg;
 664         priv->rtllib->allow_all_dest_addr_handler = rtl92e_set_monitor_mode;
 665         priv->rtllib->init_gain_handler = rtl92e_init_gain;
 666         priv->rtllib->rtllib_ips_leave_wq = rtl92e_rtllib_ips_leave_wq;
 667         priv->rtllib->rtllib_ips_leave = rtl92e_rtllib_ips_leave;
 668         priv->rtllib->ScanOperationBackupHandler = rtl92e_scan_op_backup;
 669 }
 670
 671 static void _rtl92e_init_priv_variable(struct net_device *dev)
 672 {
 673         struct r8192_priv *priv = rtllib_priv(dev);
 674         u8 i;
 675
 676         priv->dot11_current_preamble_mode = PREAMBLE_AUTO;
 677         priv->rtllib->status = 0;
 678         priv->polling_timer_on = 0;
 679         priv->up_first_time = 1;
 680         priv->blinked_ingpio = false;
 681         priv->being_init_adapter = false;
 682         priv->txringcount = 64;
 683         priv->rxbuffersize = 9100;
 684         priv->rxringcount = MAX_RX_COUNT;
 685         priv->irq_enabled = 0;
 686         priv->chan = 1;
 687         priv->rtllib->mode = WIRELESS_MODE_AUTO;
 688         priv->rtllib->iw_mode = IW_MODE_INFRA;
 689         priv->rtllib->ieee_up = 0;
 690         priv->retry_rts = DEFAULT_RETRY_RTS;
 691         priv->retry_data = DEFAULT_RETRY_DATA;
 692         priv->rtllib->rts = DEFAULT_RTS_THRESHOLD;
 693         priv->rtllib->rate = 110;
 694         priv->promisc = (dev->flags & IFF_PROMISC) ? 1 : 0;
 695         priv->bcck_in_ch14 = false;
 696         priv->cck_present_attn = 0;
 697         priv->rfa_txpowertrackingindex = 0;
 698         priv->cck_pwr_enl = 6;
 699         memset(priv->rtllib->swcamtable, 0, sizeof(struct sw_cam_table) * 32);
 700         priv->rx_ctr = 0;
 701         priv->rtllib->wx_set_enc = 0;
 702         priv->hw_radio_off = false;
 703         priv->rtllib->rf_off_reason = 0;
 704         priv->rf_change_in_progress = false;
 705         priv->hw_rf_off_action = 0;
 706         priv->set_rf_pwr_state_in_progress = false;
 707         priv->rtllib->pwr_save_ctrl.bLeisurePs = true;
 708         priv->rtllib->lps_delay_cnt = 0;
 709         priv->rtllib->sta_sleep = LPS_IS_WAKE;
 710         priv->rtllib->rf_power_state = rf_on;
 711
 712         priv->rtllib->current_network.beacon_interval = DEFAULT_BEACONINTERVAL;
 713         priv->rtllib->iw_mode = IW_MODE_INFRA;
 714         priv->rtllib->be_scan_inprogress = false;
 715
 716         priv->rtllib->fts = DEFAULT_FRAG_THRESHOLD;
 717
 718         priv->fw_info = vzalloc(sizeof(struct rt_firmware));
 719         if (!priv->fw_info)
 720                 netdev_err(dev,
 721                            "rtl8192e: Unable to allocate space for firmware\n");
 722
 723         skb_queue_head_init(&priv->skb_queue);
 724
 725         for (i = 0; i < MAX_QUEUE_SIZE; i++)
 726                 skb_queue_head_init(&priv->rtllib->skb_waitq[i]);
 727 }
 728
 729 static void _rtl92e_init_priv_lock(struct r8192_priv *priv)
 730 {
 731         spin_lock_init(&priv->tx_lock);
 732         spin_lock_init(&priv->irq_th_lock);
 733         spin_lock_init(&priv->rf_ps_lock);
 734         spin_lock_init(&priv->ps_lock);
 735         mutex_init(&priv->wx_mutex);
 736         mutex_init(&priv->rf_mutex);
 737         mutex_init(&priv->mutex);
 738 }
 739
 740 static void _rtl92e_init_priv_task(struct net_device *dev)
 741 {
 742         struct r8192_priv *priv = rtllib_priv(dev);
 743
 744         INIT_WORK(&priv->reset_wq, (void *)_rtl92e_restart);
 745         INIT_WORK(&priv->rtllib->ips_leave_wq, (void *)rtl92e_ips_leave_wq);
 746         INIT_DELAYED_WORK(&priv->watch_dog_wq, (void *)_rtl92e_watchdog_wq_cb);
 747         INIT_DELAYED_WORK(&priv->txpower_tracking_wq, (void *)rtl92e_dm_txpower_tracking_wq);
 748         INIT_DELAYED_WORK(&priv->rfpath_check_wq, (void *)rtl92e_dm_rf_pathcheck_wq);
 749         INIT_DELAYED_WORK(&priv->update_beacon_wq, (void *)_rtl92e_update_beacon);
 750         INIT_WORK(&priv->qos_activate, (void *)_rtl92e_qos_activate);
 751         INIT_DELAYED_WORK(&priv->rtllib->hw_wakeup_wq, (void *)rtl92e_hw_wakeup_wq);
 752         INIT_DELAYED_WORK(&priv->rtllib->hw_sleep_wq, (void *)rtl92e_hw_sleep_wq);
 753         tasklet_setup(&priv->irq_rx_tasklet, _rtl92e_irq_rx_tasklet);
 754         tasklet_setup(&priv->irq_tx_tasklet, _rtl92e_irq_tx_tasklet);
 755 }
 756
 757 static short _rtl92e_get_channel_map(struct net_device *dev)
 758 {
 759         int i;
 760
 761         struct r8192_priv *priv = rtllib_priv(dev);
 762
 763         for (i = 1; i <= 11; i++)
 764                 (priv->rtllib->active_channel_map)[i] = 1;
 765         (priv->rtllib->active_channel_map)[12] = 2;
 766         (priv->rtllib->active_channel_map)[13] = 2;
 767
 768         return 0;
 769 }
 770
 771 static short _rtl92e_init(struct net_device *dev)
 772 {
 773         struct r8192_priv *priv = rtllib_priv(dev);
 774
 775         memset(&priv->stats, 0, sizeof(struct rt_stats));
 776
 777         _rtl92e_init_priv_handler(dev);
 778         _rtl92e_init_priv_variable(dev);
 779         _rtl92e_init_priv_lock(priv);
 780         _rtl92e_init_priv_task(dev);
 781         rtl92e_get_eeprom_size(dev);
 782         rtl92e_init_variables(dev);
 783         _rtl92e_get_channel_map(dev);
 784
 785         rtl92e_dm_init(dev);
 786
 787         timer_setup(&priv->watch_dog_timer, _rtl92e_watchdog_timer_cb, 0);
 788
 789         timer_setup(&priv->gpio_polling_timer, rtl92e_check_rfctrl_gpio_timer,
 790                     0);
 791
 792         rtl92e_irq_disable(dev);
 793         if (request_irq(dev->irq, _rtl92e_irq, IRQF_SHARED, dev->name, dev)) {
 794                 netdev_err(dev, "Error allocating IRQ %d", dev->irq);
 795                 return -1;
 796         }
 797
 798         priv->irq = dev->irq;
 799
 800         if (_rtl92e_pci_initdescring(dev) != 0) {
 801                 netdev_err(dev, "Endopoints initialization failed");
 802                 free_irq(dev->irq, dev);
 803                 return -1;
 804         }
 805
 806         return 0;
 807 }
 808
 809 /***************************************************************************
 810  * -------------------------------WATCHDOG STUFF---------------------------
 811  **************************************************************************/
 812 static short _rtl92e_is_tx_queue_empty(struct net_device *dev)
 813 {
 814         int i = 0;
 815         struct r8192_priv *priv = rtllib_priv(dev);
 816
 817         for (i = 0; i <= MGNT_QUEUE; i++) {
 818                 if ((i == TXCMD_QUEUE) || (i == HCCA_QUEUE))
 819                         continue;
 820                 if (skb_queue_len(&(&priv->tx_ring[i])->queue) > 0) {
 821                         netdev_info(dev, "===>tx queue is not empty:%d, %d\n",
 822                                i, skb_queue_len(&(&priv->tx_ring[i])->queue));
 823                         return 0;
 824                 }
 825         }
 826         return 1;
 827 }
 828
 829 static enum reset_type _rtl92e_tx_check_stuck(struct net_device *dev)
 830 {
 831         struct r8192_priv *priv = rtllib_priv(dev);
 832         u8      QueueID;
 833         bool    bCheckFwTxCnt = false;
 834         struct rtl8192_tx_ring  *ring = NULL;
 835         struct sk_buff *skb = NULL;
 836         struct cb_desc *tcb_desc = NULL;
 837         unsigned long flags = 0;
 838
 839         switch (priv->rtllib->ps) {
 840         case RTLLIB_PS_DISABLED:
 841                 break;
 842         case (RTLLIB_PS_MBCAST | RTLLIB_PS_UNICAST):
 843                 break;
 844         default:
 845                 break;
 846         }
 847         spin_lock_irqsave(&priv->irq_th_lock, flags);
 848         for (QueueID = 0; QueueID < MAX_TX_QUEUE; QueueID++) {
 849                 if (QueueID == TXCMD_QUEUE)
 850                         continue;
 851
 852                 if (QueueID == BEACON_QUEUE)
 853                         continue;
 854
 855                 ring = &priv->tx_ring[QueueID];
 856
 857                 if (skb_queue_len(&ring->queue) == 0) {
 858                         continue;
 859                 } else {
 860                         skb = __skb_peek(&ring->queue);
 861                         tcb_desc = (struct cb_desc *)(skb->cb +
 862                                     MAX_DEV_ADDR_SIZE);
 863                         tcb_desc->nStuckCount++;
 864                         bCheckFwTxCnt = true;
 865                         if (tcb_desc->nStuckCount > 1)
 866                                 netdev_info(dev,
 867                                             "%s: QueueID=%d tcb_desc->nStuckCount=%d\n",
 868                                             __func__, QueueID,
 869                                             tcb_desc->nStuckCount);
 870                 }
 871         }
 872         spin_unlock_irqrestore(&priv->irq_th_lock, flags);
 873
 874         if (bCheckFwTxCnt) {
 875                 if (rtl92e_is_tx_stuck(dev))
 876                         return RESET_TYPE_SILENT;
 877         }
 878
 879         return RESET_TYPE_NORESET;
 880 }
 881
 882 static enum reset_type _rtl92e_rx_check_stuck(struct net_device *dev)
 883 {
 884         if (rtl92e_is_rx_stuck(dev))
 885                 return RESET_TYPE_SILENT;
 886
 887         return RESET_TYPE_NORESET;
 888 }
 889
 890 static void _rtl92e_if_check_reset(struct net_device *dev)
 891 {
 892         struct r8192_priv *priv = rtllib_priv(dev);
 893         enum reset_type TxResetType = RESET_TYPE_NORESET;
 894         enum reset_type RxResetType = RESET_TYPE_NORESET;
 895         enum rt_rf_power_state rfState;
 896
 897         rfState = priv->rtllib->rf_power_state;
 898
 899         if (rfState == rf_on)
 900                 TxResetType = _rtl92e_tx_check_stuck(dev);
 901
 902         if (rfState == rf_on &&
 903             (priv->rtllib->iw_mode == IW_MODE_INFRA) &&
 904             (priv->rtllib->link_state == MAC80211_LINKED))
 905                 RxResetType = _rtl92e_rx_check_stuck(dev);
 906
 907         if (TxResetType == RESET_TYPE_SILENT ||
 908                    RxResetType == RESET_TYPE_SILENT) {
 909                 netdev_info(dev, "%s(): TxResetType is %d, RxResetType is %d\n",
 910                             __func__, TxResetType, RxResetType);
 911         }
 912 }
 913
 914 static void _rtl92e_update_rxcounts(struct r8192_priv *priv, u32 *TotalRxBcnNum,
 915                                     u32 *TotalRxDataNum)
 916 {
 917         u16     slot_index;
 918         u8      i;
 919
 920         *TotalRxBcnNum = 0;
 921         *TotalRxDataNum = 0;
 922
 923         slot_index = (priv->rtllib->link_detect_info.slot_index++) %
 924                         (priv->rtllib->link_detect_info.slot_num);
 925         priv->rtllib->link_detect_info.RxBcnNum[slot_index] =
 926                         priv->rtllib->link_detect_info.num_recv_bcn_in_period;
 927         priv->rtllib->link_detect_info.RxDataNum[slot_index] =
 928                         priv->rtllib->link_detect_info.num_recv_data_in_period;
 929         for (i = 0; i < priv->rtllib->link_detect_info.slot_num; i++) {
 930                 *TotalRxBcnNum += priv->rtllib->link_detect_info.RxBcnNum[i];
 931                 *TotalRxDataNum += priv->rtllib->link_detect_info.RxDataNum[i];
 932         }
 933 }
 934
 935 static void _rtl92e_watchdog_wq_cb(void *data)
 936 {
 937         struct r8192_priv *priv = container_of_dwork_rsl(data,
 938                                   struct r8192_priv, watch_dog_wq);
 939         struct net_device *dev = priv->rtllib->dev;
 940         struct rtllib_device *ieee = priv->rtllib;
 941         static u8 check_reset_cnt;
 942         unsigned long flags;
 943         struct rt_pwr_save_ctrl *psc = (struct rt_pwr_save_ctrl *)
 944                                         (&priv->rtllib->pwr_save_ctrl);
 945         bool busy_traffic = false;
 946         bool    bHigherBusyTraffic = false;
 947         bool    bHigherBusyRxTraffic = false;
 948         bool bEnterPS = false;
 949
 950         if (!priv->up || priv->hw_radio_off)
 951                 return;
 952
 953         if (priv->rtllib->link_state >= MAC80211_LINKED) {
 954                 if (priv->rtllib->CntAfterLink < 2)
 955                         priv->rtllib->CntAfterLink++;
 956         } else {
 957                 priv->rtllib->CntAfterLink = 0;
 958         }
 959
 960         rtl92e_dm_watchdog(dev);
 961
 962         if (!rtllib_act_scanning(priv->rtllib, false)) {
 963                 if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->link_state ==
 964                      MAC80211_NOLINK) &&
 965                      (ieee->rf_power_state == rf_on) && !ieee->is_set_key &&
 966                      (!ieee->proto_stoppping) && !ieee->wx_set_enc) {
 967                         if (ieee->pwr_save_ctrl.ReturnPoint == IPS_CALLBACK_NONE)
 968                                 rtl92e_ips_enter(dev);
 969                 }
 970         }
 971         if ((ieee->link_state == MAC80211_LINKED) && (ieee->iw_mode == IW_MODE_INFRA)) {
 972                 if (ieee->link_detect_info.num_rx_ok_in_period > 100 ||
 973                 ieee->link_detect_info.num_tx_ok_in_period > 100)
 974                         busy_traffic = true;
 975
 976                 if (ieee->link_detect_info.num_rx_ok_in_period > 4000 ||
 977                     ieee->link_detect_info.num_tx_ok_in_period > 4000) {
 978                         bHigherBusyTraffic = true;
 979                         if (ieee->link_detect_info.num_rx_ok_in_period > 5000)
 980                                 bHigherBusyRxTraffic = true;
 981                         else
 982                                 bHigherBusyRxTraffic = false;
 983                 }
 984
 985                 if (((ieee->link_detect_info.num_rx_unicast_ok_in_period +
 986                     ieee->link_detect_info.num_tx_ok_in_period) > 8) ||
 987                     (ieee->link_detect_info.num_rx_unicast_ok_in_period > 2))
 988                         bEnterPS = false;
 989                 else
 990                         bEnterPS = true;
 991
 992                 if (ieee->current_network.beacon_interval < 95)
 993                         bEnterPS = false;
 994
 995                 if (bEnterPS)
 996                         rtl92e_leisure_ps_enter(dev);
 997                 else
 998                         rtl92e_leisure_ps_leave(dev);
 999
1000         } else {
1001                 rtl92e_leisure_ps_leave(dev);
1002         }
1003
1004         ieee->link_detect_info.num_rx_ok_in_period = 0;
1005         ieee->link_detect_info.num_tx_ok_in_period = 0;
1006         ieee->link_detect_info.num_rx_unicast_ok_in_period = 0;
1007         ieee->link_detect_info.busy_traffic = busy_traffic;
1008
1009         ieee->link_detect_info.bHigherBusyTraffic = bHigherBusyTraffic;
1010         ieee->link_detect_info.bHigherBusyRxTraffic = bHigherBusyRxTraffic;
1011
1012         if (ieee->link_state == MAC80211_LINKED && ieee->iw_mode == IW_MODE_INFRA) {
1013                 u32     TotalRxBcnNum = 0;
1014                 u32     TotalRxDataNum = 0;
1015
1016                 _rtl92e_update_rxcounts(priv, &TotalRxBcnNum, &TotalRxDataNum);
1017
1018                 if ((TotalRxBcnNum + TotalRxDataNum) == 0)
1019                         priv->check_roaming_cnt++;
1020                 else
1021                         priv->check_roaming_cnt = 0;
1022
1023                 if (priv->check_roaming_cnt > 0) {
1024                         if (ieee->rf_power_state == rf_off)
1025                                 netdev_info(dev, "%s(): RF is off\n", __func__);
1026
1027                         netdev_info(dev,
1028                                     "===>%s(): AP is power off, chan:%d, connect another one\n",
1029                                     __func__, priv->chan);
1030
1031                         ieee->link_state = RTLLIB_ASSOCIATING;
1032
1033                         remove_peer_ts(priv->rtllib,
1034                                      priv->rtllib->current_network.bssid);
1035                         ieee->is_roaming = true;
1036                         ieee->is_set_key = false;
1037                         ieee->link_change(dev);
1038                         notify_wx_assoc_event(ieee);
1039
1040                         if (!(ieee->rtllib_ap_sec_type(ieee) &
1041                              (SEC_ALG_CCMP | SEC_ALG_TKIP)))
1042                                 schedule_delayed_work(
1043                                         &ieee->associate_procedure_wq, 0);
1044
1045                         priv->check_roaming_cnt = 0;
1046                 }
1047                 ieee->link_detect_info.num_recv_bcn_in_period = 0;
1048                 ieee->link_detect_info.num_recv_data_in_period = 0;
1049         }
1050
1051         spin_lock_irqsave(&priv->tx_lock, flags);
1052         if ((check_reset_cnt++ >= 3) && (!ieee->is_roaming) &&
1053             (!priv->rf_change_in_progress) && (!psc->bSwRfProcessing)) {
1054                 _rtl92e_if_check_reset(dev);
1055                 check_reset_cnt = 3;
1056         }
1057         spin_unlock_irqrestore(&priv->tx_lock, flags);
1058 }
1059
1060 static void _rtl92e_watchdog_timer_cb(struct timer_list *t)
1061 {
1062         struct r8192_priv *priv = from_timer(priv, t, watch_dog_timer);
1063
1064         schedule_delayed_work(&priv->watch_dog_wq, 0);
1065         mod_timer(&priv->watch_dog_timer, jiffies +
1066                   msecs_to_jiffies(RTLLIB_WATCH_DOG_TIME));
1067 }
1068
1069 /****************************************************************************
1070  * ---------------------------- NIC TX/RX STUFF---------------------------
1071  ****************************************************************************/
1072 void rtl92e_rx_enable(struct net_device *dev)
1073 {
1074         rtl92e_enable_rx(dev);
1075 }
1076
1077 void rtl92e_tx_enable(struct net_device *dev)
1078 {
1079         struct r8192_priv *priv = rtllib_priv(dev);
1080
1081         rtl92e_enable_tx(dev);
1082
1083         rtllib_reset_queue(priv->rtllib);
1084 }
1085
1086 static void _rtl92e_free_rx_ring(struct net_device *dev)
1087 {
1088         struct r8192_priv *priv = rtllib_priv(dev);
1089         int i;
1090
1091         for (i = 0; i < priv->rxringcount; i++) {
1092                 struct sk_buff *skb = priv->rx_buf[i];
1093
1094                 if (!skb)
1095                         continue;
1096
1097                 dma_unmap_single(&priv->pdev->dev,
1098                                  *((dma_addr_t *)skb->cb),
1099                                  priv->rxbuffersize, DMA_FROM_DEVICE);
1100                 kfree_skb(skb);
1101         }
1102
1103         dma_free_coherent(&priv->pdev->dev,
1104                           sizeof(*priv->rx_ring) * priv->rxringcount,
1105                           priv->rx_ring,
1106                           priv->rx_ring_dma);
1107         priv->rx_ring = NULL;
1108 }
1109
1110 static void _rtl92e_free_tx_ring(struct net_device *dev, unsigned int prio)
1111 {
1112         struct r8192_priv *priv = rtllib_priv(dev);
1113         struct rtl8192_tx_ring *ring = &priv->tx_ring[prio];
1114
1115         while (skb_queue_len(&ring->queue)) {
1116                 struct tx_desc *entry = &ring->desc[ring->idx];
1117                 struct sk_buff *skb = __skb_dequeue(&ring->queue);
1118
1119                 dma_unmap_single(&priv->pdev->dev, entry->TxBuffAddr,
1120                                  skb->len, DMA_TO_DEVICE);
1121                 kfree_skb(skb);
1122                 ring->idx = (ring->idx + 1) % ring->entries;
1123         }
1124
1125         dma_free_coherent(&priv->pdev->dev,
1126                           sizeof(*ring->desc) * ring->entries, ring->desc,
1127                           ring->dma);
1128         ring->desc = NULL;
1129 }
1130
1131 static void _rtl92e_hard_data_xmit(struct sk_buff *skb, struct net_device *dev,
1132                                    int rate)
1133 {
1134         struct r8192_priv *priv = rtllib_priv(dev);
1135         int ret;
1136         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb +
1137                                     MAX_DEV_ADDR_SIZE);
1138         u8 queue_index = tcb_desc->queue_index;
1139
1140         if ((priv->rtllib->rf_power_state == rf_off) || !priv->up) {
1141                 kfree_skb(skb);
1142                 return;
1143         }
1144
1145         if (queue_index == TXCMD_QUEUE)
1146                 netdev_warn(dev, "%s(): queue index == TXCMD_QUEUE\n",
1147                             __func__);
1148
1149         memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
1150         skb_push(skb, priv->rtllib->tx_headroom);
1151         ret = _rtl92e_tx(dev, skb);
1152
1153         if (queue_index != MGNT_QUEUE) {
1154                 priv->rtllib->stats.tx_bytes += (skb->len -
1155                                                  priv->rtllib->tx_headroom);
1156                 priv->rtllib->stats.tx_packets++;
1157         }
1158
1159         if (ret != 0)
1160                 kfree_skb(skb);
1161 }
1162
1163 static int _rtl92e_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1164 {
1165         struct r8192_priv *priv = rtllib_priv(dev);
1166         int ret;
1167         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb +
1168                                     MAX_DEV_ADDR_SIZE);
1169         u8 queue_index = tcb_desc->queue_index;
1170
1171         if (queue_index != TXCMD_QUEUE) {
1172                 if ((priv->rtllib->rf_power_state == rf_off) ||
1173                      !priv->up) {
1174                         kfree_skb(skb);
1175                         return 0;
1176                 }
1177         }
1178
1179         memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
1180         if (queue_index == TXCMD_QUEUE) {
1181                 _rtl92e_tx_cmd(dev, skb);
1182                 return 0;
1183         }
1184
1185         tcb_desc->ratr_index = 7;
1186         tcb_desc->tx_dis_rate_fallback = 1;
1187         tcb_desc->tx_use_drv_assinged_rate = 1;
1188         tcb_desc->tx_enable_fw_calc_dur = 1;
1189         skb_push(skb, priv->rtllib->tx_headroom);
1190         ret = _rtl92e_tx(dev, skb);
1191         if (ret != 0)
1192                 kfree_skb(skb);
1193         return ret;
1194 }
1195
1196 static void _rtl92e_tx_isr(struct net_device *dev, int prio)
1197 {
1198         struct r8192_priv *priv = rtllib_priv(dev);
1199
1200         struct rtl8192_tx_ring *ring = &priv->tx_ring[prio];
1201
1202         while (skb_queue_len(&ring->queue)) {
1203                 struct tx_desc *entry = &ring->desc[ring->idx];
1204                 struct sk_buff *skb;
1205
1206                 if (prio != BEACON_QUEUE) {
1207                         if (entry->OWN)
1208                                 return;
1209                         ring->idx = (ring->idx + 1) % ring->entries;
1210                 }
1211
1212                 skb = __skb_dequeue(&ring->queue);
1213                 dma_unmap_single(&priv->pdev->dev, entry->TxBuffAddr,
1214                                  skb->len, DMA_TO_DEVICE);
1215
1216                 kfree_skb(skb);
1217         }
1218         if (prio != BEACON_QUEUE)
1219                 tasklet_schedule(&priv->irq_tx_tasklet);
1220 }
1221
1222 static void _rtl92e_tx_cmd(struct net_device *dev, struct sk_buff *skb)
1223 {
1224         struct r8192_priv *priv = rtllib_priv(dev);
1225         struct rtl8192_tx_ring *ring;
1226         struct tx_desc_cmd *entry;
1227         unsigned int idx;
1228         struct cb_desc *tcb_desc;
1229         unsigned long flags;
1230
1231         spin_lock_irqsave(&priv->irq_th_lock, flags);
1232         ring = &priv->tx_ring[TXCMD_QUEUE];
1233
1234         idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
1235         entry = (struct tx_desc_cmd *)&ring->desc[idx];
1236
1237         tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
1238
1239         rtl92e_fill_tx_cmd_desc(dev, entry, tcb_desc, skb);
1240
1241         __skb_queue_tail(&ring->queue, skb);
1242         spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1243 }
1244
1245 static short _rtl92e_tx(struct net_device *dev, struct sk_buff *skb)
1246 {
1247         struct r8192_priv *priv = rtllib_priv(dev);
1248         struct rtl8192_tx_ring  *ring;
1249         unsigned long flags;
1250         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb +
1251                                     MAX_DEV_ADDR_SIZE);
1252         struct tx_desc *pdesc = NULL;
1253         struct ieee80211_hdr *header = NULL;
1254         u8 *pda_addr = NULL;
1255         int   idx;
1256         u32 fwinfo_size = 0;
1257
1258         priv->rtllib->awake_pkt_sent = true;
1259
1260         fwinfo_size = sizeof(struct tx_fwinfo_8190pci);
1261
1262         header = (struct ieee80211_hdr *)(((u8 *)skb->data) + fwinfo_size);
1263         pda_addr = header->addr1;
1264
1265         if (!is_broadcast_ether_addr(pda_addr) && !is_multicast_ether_addr(pda_addr))
1266                 priv->stats.txbytesunicast += skb->len - fwinfo_size;
1267
1268         spin_lock_irqsave(&priv->irq_th_lock, flags);
1269         ring = &priv->tx_ring[tcb_desc->queue_index];
1270         if (tcb_desc->queue_index != BEACON_QUEUE)
1271                 idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
1272         else
1273                 idx = 0;
1274
1275         pdesc = &ring->desc[idx];
1276         if ((pdesc->OWN == 1) && (tcb_desc->queue_index != BEACON_QUEUE)) {
1277                 netdev_warn(dev,
1278                             "No more TX desc@%d, ring->idx = %d, idx = %d, skblen = 0x%x queuelen=%d",
1279                             tcb_desc->queue_index, ring->idx, idx, skb->len,
1280                             skb_queue_len(&ring->queue));
1281                 spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1282                 return skb->len;
1283         }
1284         rtl92e_fill_tx_desc(dev, pdesc, tcb_desc, skb);
1285         __skb_queue_tail(&ring->queue, skb);
1286         pdesc->OWN = 1;
1287         spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1288         netif_trans_update(dev);
1289
1290         rtl92e_writew(dev, TP_POLL, 0x01 << tcb_desc->queue_index);
1291         return 0;
1292 }
1293
1294 static short _rtl92e_alloc_rx_ring(struct net_device *dev)
1295 {
1296         struct r8192_priv *priv = rtllib_priv(dev);
1297         struct rx_desc *entry = NULL;
1298         int i;
1299
1300         priv->rx_ring = dma_alloc_coherent(&priv->pdev->dev,
1301                                            sizeof(*priv->rx_ring) * priv->rxringcount,
1302                                            &priv->rx_ring_dma,
1303                                            GFP_ATOMIC);
1304         if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
1305                 netdev_warn(dev, "Cannot allocate RX ring\n");
1306                 return -ENOMEM;
1307         }
1308
1309         priv->rx_idx = 0;
1310
1311         for (i = 0; i < priv->rxringcount; i++) {
1312                 struct sk_buff *skb = dev_alloc_skb(priv->rxbuffersize);
1313                 dma_addr_t *mapping;
1314
1315                 entry = &priv->rx_ring[i];
1316                 if (!skb)
1317                         return 0;
1318                 skb->dev = dev;
1319                 priv->rx_buf[i] = skb;
1320                 mapping = (dma_addr_t *)skb->cb;
1321                 *mapping = dma_map_single(&priv->pdev->dev,
1322                                           skb_tail_pointer(skb),
1323                                           priv->rxbuffersize, DMA_FROM_DEVICE);
1324                 if (dma_mapping_error(&priv->pdev->dev, *mapping)) {
1325                         dev_kfree_skb_any(skb);
1326                         return -1;
1327                 }
1328                 entry->BufferAddress = *mapping;
1329
1330                 entry->Length = priv->rxbuffersize;
1331                 entry->OWN = 1;
1332         }
1333
1334         if (entry)
1335                 entry->EOR = 1;
1336         return 0;
1337 }
1338
1339 static int _rtl92e_alloc_tx_ring(struct net_device *dev, unsigned int prio,
1340                                  unsigned int entries)
1341 {
1342         struct r8192_priv *priv = rtllib_priv(dev);
1343         struct tx_desc *ring;
1344         dma_addr_t dma;
1345         int i;
1346
1347         ring = dma_alloc_coherent(&priv->pdev->dev, sizeof(*ring) * entries,
1348                                   &dma, GFP_ATOMIC);
1349         if (!ring || (unsigned long)ring & 0xFF) {
1350                 netdev_warn(dev, "Cannot allocate TX ring (prio = %d)\n", prio);
1351                 return -ENOMEM;
1352         }
1353
1354         priv->tx_ring[prio].desc = ring;
1355         priv->tx_ring[prio].dma = dma;
1356         priv->tx_ring[prio].idx = 0;
1357         priv->tx_ring[prio].entries = entries;
1358         skb_queue_head_init(&priv->tx_ring[prio].queue);
1359
1360         for (i = 0; i < entries; i++)
1361                 ring[i].NextDescAddress =
1362                         (u32)dma + ((i + 1) % entries) *
1363                         sizeof(*ring);
1364
1365         return 0;
1366 }
1367
1368 static short _rtl92e_pci_initdescring(struct net_device *dev)
1369 {
1370         u32 ret;
1371         int i;
1372         struct r8192_priv *priv = rtllib_priv(dev);
1373
1374         ret = _rtl92e_alloc_rx_ring(dev);
1375         if (ret)
1376                 return ret;
1377
1378         for (i = 0; i < MAX_TX_QUEUE_COUNT; i++) {
1379                 ret = _rtl92e_alloc_tx_ring(dev, i, priv->txringcount);
1380                 if (ret)
1381                         goto err_free_rings;
1382         }
1383
1384         return 0;
1385
1386 err_free_rings:
1387         _rtl92e_free_rx_ring(dev);
1388         for (i = 0; i < MAX_TX_QUEUE_COUNT; i++)
1389                 if (priv->tx_ring[i].desc)
1390                         _rtl92e_free_tx_ring(dev, i);
1391         return 1;
1392 }
1393
1394 void rtl92e_reset_desc_ring(struct net_device *dev)
1395 {
1396         struct r8192_priv *priv = rtllib_priv(dev);
1397         int i;
1398         unsigned long flags = 0;
1399
1400         if (priv->rx_ring) {
1401                 struct rx_desc *entry = NULL;
1402
1403                 for (i = 0; i < priv->rxringcount; i++) {
1404                         entry = &priv->rx_ring[i];
1405                         entry->OWN = 1;
1406                 }
1407                 priv->rx_idx = 0;
1408         }
1409
1410         spin_lock_irqsave(&priv->irq_th_lock, flags);
1411         for (i = 0; i < MAX_TX_QUEUE_COUNT; i++) {
1412                 if (priv->tx_ring[i].desc) {
1413                         struct rtl8192_tx_ring *ring = &priv->tx_ring[i];
1414
1415                         while (skb_queue_len(&ring->queue)) {
1416                                 struct tx_desc *entry = &ring->desc[ring->idx];
1417                                 struct sk_buff *skb =
1418                                                  __skb_dequeue(&ring->queue);
1419
1420                                 dma_unmap_single(&priv->pdev->dev,
1421                                                  entry->TxBuffAddr, skb->len,
1422                                                  DMA_TO_DEVICE);
1423                                 kfree_skb(skb);
1424                                 ring->idx = (ring->idx + 1) % ring->entries;
1425                         }
1426                         ring->idx = 0;
1427                 }
1428         }
1429         spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1430 }
1431
1432 long rtl92e_translate_to_dbm(struct r8192_priv *priv, u8 signal_strength_index)
1433 {
1434         long    signal_power;
1435
1436         signal_power = (long)((signal_strength_index + 1) >> 1);
1437         signal_power -= 95;
1438
1439         return signal_power;
1440 }
1441
1442 void rtl92e_update_rx_statistics(struct r8192_priv *priv,
1443                                  struct rtllib_rx_stats *pprevious_stats)
1444 {
1445         int weighting = 0;
1446
1447         if (priv->stats.recv_signal_power == 0)
1448                 priv->stats.recv_signal_power =
1449                                          pprevious_stats->RecvSignalPower;
1450
1451         if (pprevious_stats->RecvSignalPower > priv->stats.recv_signal_power)
1452                 weighting = 5;
1453         else if (pprevious_stats->RecvSignalPower <
1454                  priv->stats.recv_signal_power)
1455                 weighting = (-5);
1456         priv->stats.recv_signal_power = (priv->stats.recv_signal_power * 5 +
1457                                         pprevious_stats->RecvSignalPower +
1458                                         weighting) / 6;
1459 }
1460
1461 u8 rtl92e_rx_db_to_percent(s8 antpower)
1462 {
1463         if ((antpower <= -100) || (antpower >= 20))
1464                 return  0;
1465         else if (antpower >= 0)
1466                 return  100;
1467         else
1468                 return  100 + antpower;
1469
1470 }       /* QueryRxPwrPercentage */
1471
1472 u8 rtl92e_evm_db_to_percent(s8 value)
1473 {
1474         s8 ret_val = clamp(-value, 0, 33) * 3;
1475
1476         if (ret_val == 99)
1477                 ret_val = 100;
1478
1479         return ret_val;
1480 }
1481
1482 void rtl92e_copy_mpdu_stats(struct rtllib_rx_stats *psrc_stats,
1483                             struct rtllib_rx_stats *ptarget_stats)
1484 {
1485         ptarget_stats->bIsAMPDU = psrc_stats->bIsAMPDU;
1486         ptarget_stats->bFirstMPDU = psrc_stats->bFirstMPDU;
1487 }
1488
1489 static void _rtl92e_rx_normal(struct net_device *dev)
1490 {
1491         struct r8192_priv *priv = rtllib_priv(dev);
1492         struct ieee80211_hdr *rtllib_hdr = NULL;
1493         bool unicast_packet = false;
1494         u32 skb_len = 0;
1495
1496         struct rtllib_rx_stats stats = {
1497                 .signal = 0,
1498                 .noise = (u8)-98,
1499                 .rate = 0,
1500         };
1501         unsigned int count = priv->rxringcount;
1502
1503         while (count--) {
1504                 struct rx_desc *pdesc = &priv->rx_ring
1505                                         [priv->rx_idx];
1506                 struct sk_buff *skb = priv->rx_buf
1507                                       [priv->rx_idx];
1508                 struct sk_buff *new_skb;
1509
1510                 if (pdesc->OWN)
1511                         return;
1512                 if (!rtl92e_get_rx_stats(dev, &stats, pdesc, skb))
1513                         goto done;
1514                 new_skb = dev_alloc_skb(priv->rxbuffersize);
1515                 /* if allocation of new skb failed - drop current packet
1516                  * and reuse skb
1517                  */
1518                 if (unlikely(!new_skb))
1519                         goto done;
1520
1521                 dma_unmap_single(&priv->pdev->dev, *((dma_addr_t *)skb->cb),
1522                                  priv->rxbuffersize, DMA_FROM_DEVICE);
1523
1524                 skb_put(skb, pdesc->Length);
1525                 skb_reserve(skb, stats.RxDrvInfoSize +
1526                         stats.RxBufShift);
1527                 skb_trim(skb, skb->len - S_CRC_LEN);
1528                 rtllib_hdr = (struct ieee80211_hdr *)skb->data;
1529                 if (!is_multicast_ether_addr(rtllib_hdr->addr1)) {
1530                         /* unicast packet */
1531                         unicast_packet = true;
1532                 }
1533                 skb_len = skb->len;
1534
1535                 if (!rtllib_rx(priv->rtllib, skb, &stats)) {
1536                         dev_kfree_skb_any(skb);
1537                 } else {
1538                         if (unicast_packet)
1539                                 priv->stats.rxbytesunicast += skb_len;
1540                 }
1541
1542                 skb = new_skb;
1543                 skb->dev = dev;
1544
1545                 priv->rx_buf[priv->rx_idx] = skb;
1546                 *((dma_addr_t *)skb->cb) = dma_map_single(&priv->pdev->dev,
1547                                                           skb_tail_pointer(skb),
1548                                                           priv->rxbuffersize, DMA_FROM_DEVICE);
1549                 if (dma_mapping_error(&priv->pdev->dev, *((dma_addr_t *)skb->cb))) {
1550                         dev_kfree_skb_any(skb);
1551                         return;
1552                 }
1553 done:
1554                 pdesc->BufferAddress = *((dma_addr_t *)skb->cb);
1555                 pdesc->OWN = 1;
1556                 pdesc->Length = priv->rxbuffersize;
1557                 if (priv->rx_idx == priv->rxringcount - 1)
1558                         pdesc->EOR = 1;
1559                 priv->rx_idx = (priv->rx_idx + 1) %
1560                                               priv->rxringcount;
1561         }
1562 }
1563
1564 static void _rtl92e_tx_resume(struct net_device *dev)
1565 {
1566         struct r8192_priv *priv = rtllib_priv(dev);
1567         struct rtllib_device *ieee = priv->rtllib;
1568         struct sk_buff *skb;
1569         int queue_index;
1570
1571         for (queue_index = BK_QUEUE;
1572              queue_index < MAX_QUEUE_SIZE; queue_index++) {
1573                 while ((!skb_queue_empty(&ieee->skb_waitq[queue_index])) &&
1574                 (priv->rtllib->check_nic_enough_desc(dev, queue_index) > 0)) {
1575                         skb = skb_dequeue(&ieee->skb_waitq[queue_index]);
1576                         ieee->softmac_data_hard_start_xmit(skb, dev, 0);
1577                 }
1578         }
1579 }
1580
1581 static void _rtl92e_irq_tx_tasklet(struct tasklet_struct *t)
1582 {
1583         struct r8192_priv *priv = from_tasklet(priv, t, irq_tx_tasklet);
1584
1585         _rtl92e_tx_resume(priv->rtllib->dev);
1586 }
1587
1588 static void _rtl92e_irq_rx_tasklet(struct tasklet_struct *t)
1589 {
1590         struct r8192_priv *priv = from_tasklet(priv, t, irq_rx_tasklet);
1591
1592         _rtl92e_rx_normal(priv->rtllib->dev);
1593
1594         rtl92e_writel(priv->rtllib->dev, INTA_MASK,
1595                       rtl92e_readl(priv->rtllib->dev, INTA_MASK) | IMR_RDU);
1596 }
1597
1598 /****************************************************************************
1599  * ---------------------------- NIC START/CLOSE STUFF---------------------------
1600  ****************************************************************************/
1601 static void _rtl92e_cancel_deferred_work(struct r8192_priv *priv)
1602 {
1603         cancel_delayed_work_sync(&priv->watch_dog_wq);
1604         cancel_delayed_work_sync(&priv->update_beacon_wq);
1605         cancel_delayed_work(&priv->rtllib->hw_sleep_wq);
1606         cancel_work_sync(&priv->reset_wq);
1607         cancel_work_sync(&priv->qos_activate);
1608 }
1609
1610 static int _rtl92e_up(struct net_device *dev)
1611 {
1612         if (_rtl92e_sta_up(dev) == -1)
1613                 return -1;
1614         return 0;
1615 }
1616
1617 static int _rtl92e_open(struct net_device *dev)
1618 {
1619         struct r8192_priv *priv = rtllib_priv(dev);
1620         int ret;
1621
1622         mutex_lock(&priv->wx_mutex);
1623         ret = _rtl92e_try_up(dev);
1624         mutex_unlock(&priv->wx_mutex);
1625         return ret;
1626 }
1627
1628 static int _rtl92e_try_up(struct net_device *dev)
1629 {
1630         struct r8192_priv *priv = rtllib_priv(dev);
1631
1632         if (priv->up == 1)
1633                 return -1;
1634         return _rtl92e_up(dev);
1635 }
1636
1637 static int _rtl92e_close(struct net_device *dev)
1638 {
1639         struct r8192_priv *priv = rtllib_priv(dev);
1640         int ret;
1641
1642         if ((rtllib_act_scanning(priv->rtllib, false)) &&
1643                 !(priv->rtllib->softmac_features & IEEE_SOFTMAC_SCAN)) {
1644                 rtllib_stop_scan(priv->rtllib);
1645         }
1646
1647         mutex_lock(&priv->wx_mutex);
1648
1649         ret = _rtl92e_down(dev, true);
1650
1651         mutex_unlock(&priv->wx_mutex);
1652
1653         return ret;
1654 }
1655
1656 static int _rtl92e_down(struct net_device *dev, bool shutdownrf)
1657 {
1658         if (_rtl92e_sta_down(dev, shutdownrf) == -1)
1659                 return -1;
1660
1661         return 0;
1662 }
1663
1664 void rtl92e_commit(struct net_device *dev)
1665 {
1666         struct r8192_priv *priv = rtllib_priv(dev);
1667
1668         if (priv->up == 0)
1669                 return;
1670         rtllib_softmac_stop_protocol(priv->rtllib);
1671         rtl92e_irq_disable(dev);
1672         rtl92e_stop_adapter(dev, true);
1673         _rtl92e_up(dev);
1674 }
1675
1676 static void _rtl92e_restart(void *data)
1677 {
1678         struct r8192_priv *priv = container_of(data, struct r8192_priv, reset_wq);
1679         struct net_device *dev = priv->rtllib->dev;
1680
1681         mutex_lock(&priv->wx_mutex);
1682
1683         rtl92e_commit(dev);
1684
1685         mutex_unlock(&priv->wx_mutex);
1686 }
1687
1688 static void _rtl92e_set_multicast(struct net_device *dev)
1689 {
1690         struct r8192_priv *priv = rtllib_priv(dev);
1691         short promisc;
1692
1693         promisc = (dev->flags & IFF_PROMISC) ? 1 : 0;
1694         priv->promisc = promisc;
1695 }
1696
1697 static int _rtl92e_set_mac_adr(struct net_device *dev, void *mac)
1698 {
1699         struct r8192_priv *priv = rtllib_priv(dev);
1700         struct sockaddr *addr = mac;
1701
1702         mutex_lock(&priv->wx_mutex);
1703
1704         eth_hw_addr_set(dev, addr->sa_data);
1705
1706         schedule_work(&priv->reset_wq);
1707         mutex_unlock(&priv->wx_mutex);
1708
1709         return 0;
1710 }
1711
1712 static irqreturn_t _rtl92e_irq(int irq, void *netdev)
1713 {
1714         struct net_device *dev = netdev;
1715         struct r8192_priv *priv = rtllib_priv(dev);
1716         unsigned long flags;
1717         u32 inta;
1718
1719         if (priv->irq_enabled == 0)
1720                 goto done;
1721
1722         spin_lock_irqsave(&priv->irq_th_lock, flags);
1723
1724         rtl92e_ack_irq(dev, &inta);
1725
1726         if (!inta) {
1727                 spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1728                 goto done;
1729         }
1730
1731         if (inta == 0xffff) {
1732                 spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1733                 goto done;
1734         }
1735
1736         if (!netif_running(dev)) {
1737                 spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1738                 goto done;
1739         }
1740
1741         if (inta  & IMR_MGNTDOK) {
1742                 _rtl92e_tx_isr(dev, MGNT_QUEUE);
1743                 spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1744                 if (priv->rtllib->ack_tx_to_ieee) {
1745                         if (_rtl92e_is_tx_queue_empty(dev)) {
1746                                 priv->rtllib->ack_tx_to_ieee = 0;
1747                                 rtllib_ps_tx_ack(priv->rtllib, 1);
1748                         }
1749                 }
1750                 spin_lock_irqsave(&priv->irq_th_lock, flags);
1751         }
1752
1753         if (inta & IMR_COMDOK)
1754                 _rtl92e_tx_isr(dev, TXCMD_QUEUE);
1755
1756         if (inta & IMR_HIGHDOK)
1757                 _rtl92e_tx_isr(dev, HIGH_QUEUE);
1758
1759         if (inta & IMR_ROK)
1760                 tasklet_schedule(&priv->irq_rx_tasklet);
1761
1762         if (inta & IMR_RDU) {
1763                 rtl92e_writel(dev, INTA_MASK,
1764                               rtl92e_readl(dev, INTA_MASK) & ~IMR_RDU);
1765                 tasklet_schedule(&priv->irq_rx_tasklet);
1766         }
1767
1768         if (inta & IMR_RXFOVW)
1769                 tasklet_schedule(&priv->irq_rx_tasklet);
1770
1771         if (inta & IMR_BKDOK) {
1772                 priv->rtllib->link_detect_info.num_tx_ok_in_period++;
1773                 _rtl92e_tx_isr(dev, BK_QUEUE);
1774         }
1775
1776         if (inta & IMR_BEDOK) {
1777                 priv->rtllib->link_detect_info.num_tx_ok_in_period++;
1778                 _rtl92e_tx_isr(dev, BE_QUEUE);
1779         }
1780
1781         if (inta & IMR_VIDOK) {
1782                 priv->rtllib->link_detect_info.num_tx_ok_in_period++;
1783                 _rtl92e_tx_isr(dev, VI_QUEUE);
1784         }
1785
1786         if (inta & IMR_VODOK) {
1787                 priv->rtllib->link_detect_info.num_tx_ok_in_period++;
1788                 _rtl92e_tx_isr(dev, VO_QUEUE);
1789         }
1790
1791         spin_unlock_irqrestore(&priv->irq_th_lock, flags);
1792
1793 done:
1794
1795         return IRQ_HANDLED;
1796 }
1797
1798 /****************************************************************************
1799  * ---------------------------- PCI_STUFF---------------------------
1800  ****************************************************************************/
1801 static const struct net_device_ops rtl8192_netdev_ops = {
1802         .ndo_open = _rtl92e_open,
1803         .ndo_stop = _rtl92e_close,
1804         .ndo_tx_timeout = _rtl92e_tx_timeout,
1805         .ndo_set_rx_mode = _rtl92e_set_multicast,
1806         .ndo_set_mac_address = _rtl92e_set_mac_adr,
1807         .ndo_validate_addr = eth_validate_addr,
1808         .ndo_start_xmit = rtllib_xmit,
1809 };
1810
1811 static int _rtl92e_pci_probe(struct pci_dev *pdev,
1812                              const struct pci_device_id *id)
1813 {
1814         unsigned long ioaddr = 0;
1815         struct net_device *dev = NULL;
1816         struct r8192_priv *priv = NULL;
1817         unsigned long pmem_start, pmem_len, pmem_flags;
1818         int err = -ENOMEM;
1819
1820         if (pci_enable_device(pdev)) {
1821                 dev_err(&pdev->dev, "Failed to enable PCI device");
1822                 return -EIO;
1823         }
1824
1825         pci_set_master(pdev);
1826
1827         if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
1828                 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32))) {
1829                         dev_info(&pdev->dev,
1830                                  "Unable to obtain 32bit DMA for consistent allocations\n");
1831                         goto err_pci_disable;
1832                 }
1833         }
1834         dev = alloc_rtllib(sizeof(struct r8192_priv));
1835         if (!dev)
1836                 goto err_pci_disable;
1837
1838         err = -ENODEV;
1839
1840         pci_set_drvdata(pdev, dev);
1841         SET_NETDEV_DEV(dev, &pdev->dev);
1842         priv = rtllib_priv(dev);
1843         priv->rtllib = (struct rtllib_device *)netdev_priv_rsl(dev);
1844         priv->pdev = pdev;
1845         priv->rtllib->pdev = pdev;
1846         if ((pdev->subsystem_vendor == PCI_VENDOR_ID_DLINK) &&
1847             (pdev->subsystem_device == 0x3304))
1848                 priv->rtllib->bSupportRemoteWakeUp = 1;
1849         else
1850                 priv->rtllib->bSupportRemoteWakeUp = 0;
1851
1852         pmem_start = pci_resource_start(pdev, 1);
1853         pmem_len = pci_resource_len(pdev, 1);
1854         pmem_flags = pci_resource_flags(pdev, 1);
1855
1856         if (!(pmem_flags & IORESOURCE_MEM)) {
1857                 netdev_err(dev, "region #1 not a MMIO resource, aborting");
1858                 goto err_rel_rtllib;
1859         }
1860
1861         dev_info(&pdev->dev, "Memory mapped space start: 0x%08lx\n",
1862                  pmem_start);
1863         if (!request_mem_region(pmem_start, pmem_len, DRV_NAME)) {
1864                 netdev_err(dev, "request_mem_region failed!");
1865                 goto err_rel_rtllib;
1866         }
1867
1868         ioaddr = (unsigned long)ioremap(pmem_start, pmem_len);
1869         if (ioaddr == (unsigned long)NULL) {
1870                 netdev_err(dev, "ioremap failed!");
1871                 goto err_rel_mem;
1872         }
1873
1874         dev->mem_start = ioaddr;
1875         dev->mem_end = ioaddr + pci_resource_len(pdev, 0);
1876
1877         if (!rtl92e_check_adapter(pdev, dev))
1878                 goto err_unmap;
1879
1880         dev->irq = pdev->irq;
1881         priv->irq = 0;
1882
1883         dev->netdev_ops = &rtl8192_netdev_ops;
1884
1885         dev->wireless_handlers = &r8192_wx_handlers_def;
1886         dev->ethtool_ops = &rtl819x_ethtool_ops;
1887
1888         dev->type = ARPHRD_ETHER;
1889         dev->watchdog_timeo = HZ * 3;
1890
1891         if (dev_alloc_name(dev, ifname) < 0)
1892                 dev_alloc_name(dev, ifname);
1893
1894         if (_rtl92e_init(dev) != 0) {
1895                 netdev_warn(dev, "Initialization failed");
1896                 goto err_free_irq;
1897         }
1898
1899         netif_carrier_off(dev);
1900         netif_stop_queue(dev);
1901
1902         if (register_netdev(dev))
1903                 goto err_free_irq;
1904
1905         if (priv->polling_timer_on == 0)
1906                 rtl92e_check_rfctrl_gpio_timer(&priv->gpio_polling_timer);
1907
1908         return 0;
1909
1910 err_free_irq:
1911         free_irq(dev->irq, dev);
1912         priv->irq = 0;
1913 err_unmap:
1914         iounmap((void __iomem *)ioaddr);
1915 err_rel_mem:
1916         release_mem_region(pmem_start, pmem_len);
1917 err_rel_rtllib:
1918         free_rtllib(dev);
1919 err_pci_disable:
1920         pci_disable_device(pdev);
1921         return err;
1922 }
1923
1924 static void _rtl92e_pci_disconnect(struct pci_dev *pdev)
1925 {
1926         struct net_device *dev = pci_get_drvdata(pdev);
1927         struct r8192_priv *priv;
1928         u32 i;
1929
1930         if (dev) {
1931                 unregister_netdev(dev);
1932
1933                 priv = rtllib_priv(dev);
1934
1935                 del_timer_sync(&priv->gpio_polling_timer);
1936                 cancel_delayed_work_sync(&priv->gpio_change_rf_wq);
1937                 priv->polling_timer_on = 0;
1938                 _rtl92e_down(dev, true);
1939                 rtl92e_dm_deinit(dev);
1940                 vfree(priv->fw_info);
1941                 priv->fw_info = NULL;
1942                 _rtl92e_free_rx_ring(dev);
1943                 for (i = 0; i < MAX_TX_QUEUE_COUNT; i++)
1944                         _rtl92e_free_tx_ring(dev, i);
1945
1946                 if (priv->irq) {
1947                         dev_info(&pdev->dev, "Freeing irq %d\n", dev->irq);
1948                         free_irq(dev->irq, dev);
1949                         priv->irq = 0;
1950                 }
1951
1952                 if (dev->mem_start != 0) {
1953                         iounmap((void __iomem *)dev->mem_start);
1954                         release_mem_region(pci_resource_start(pdev, 1),
1955                                         pci_resource_len(pdev, 1));
1956                 }
1957
1958                 free_rtllib(dev);
1959         }
1960
1961         pci_disable_device(pdev);
1962 }
1963
1964 bool rtl92e_enable_nic(struct net_device *dev)
1965 {
1966         bool init_status = true;
1967         struct r8192_priv *priv = rtllib_priv(dev);
1968         struct rt_pwr_save_ctrl *psc = (struct rt_pwr_save_ctrl *)
1969                                         (&priv->rtllib->pwr_save_ctrl);
1970
1971         if (!priv->up) {
1972                 netdev_warn(dev, "%s(): Driver is already down!\n", __func__);
1973                 return false;
1974         }
1975
1976         init_status = rtl92e_start_adapter(dev);
1977         if (!init_status) {
1978                 netdev_warn(dev, "%s(): Initialization failed!\n", __func__);
1979                 return false;
1980         }
1981         RT_CLEAR_PS_LEVEL(psc, RT_RF_OFF_LEVL_HALT_NIC);
1982
1983         rtl92e_irq_enable(dev);
1984         return init_status;
1985 }
1986
1987 module_pci_driver(rtl8192_pci_driver);
1988
1989 void rtl92e_check_rfctrl_gpio_timer(struct timer_list *t)
1990 {
1991         struct r8192_priv *priv = from_timer(priv, t, gpio_polling_timer);
1992
1993         priv->polling_timer_on = 1;
1994
1995         schedule_delayed_work(&priv->gpio_change_rf_wq, 0);
1996
1997         mod_timer(&priv->gpio_polling_timer, jiffies +
1998                   msecs_to_jiffies(RTLLIB_WATCH_DOG_TIME));
1999 }
2000
2001 /***************************************************************************
2002  * ------------------- module init / exit stubs ----------------
2003  ***************************************************************************/
2004 MODULE_DESCRIPTION("Linux driver for Realtek RTL819x WiFi cards");
2005 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
2006 MODULE_VERSION(DRV_VERSION);
2007 MODULE_LICENSE("GPL");
2008 MODULE_FIRMWARE(RTL8192E_BOOT_IMG_FW);
2009 MODULE_FIRMWARE(RTL8192E_MAIN_IMG_FW);
2010 MODULE_FIRMWARE(RTL8192E_DATA_IMG_FW);
2011
2012 module_param(ifname, charp, 0644);
2013 module_param(hwwep, int, 0644);
2014
2015 MODULE_PARM_DESC(ifname, " Net interface name, wlan%d=default");
2016 MODULE_PARM_DESC(hwwep, " Try to use hardware WEP support(default use hw. set 0 to use software security)");