drivers/net/wireless/rtlwifi/pci.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  Realtek Corporation.
   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  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  * Larry Finger <Larry.Finger@lwfinger.net>
  27  *
  28  *****************************************************************************/
  29
  30 #include "wifi.h"
  31 #include "core.h"
  32 #include "pci.h"
  33 #include "base.h"
  34 #include "ps.h"
  35 #include "efuse.h"
  36 #include <linux/export.h>
  37 #include <linux/kmemleak.h>
  38 #include <linux/module.h>
  39
  40 MODULE_AUTHOR("lizhaoming       <chaoming_li@realsil.com.cn>");
  41 MODULE_AUTHOR("Realtek WlanFAE  <wlanfae@realtek.com>");
  42 MODULE_AUTHOR("Larry Finger     <Larry.FInger@lwfinger.net>");
  43 MODULE_LICENSE("GPL");
  44 MODULE_DESCRIPTION("PCI basic driver for rtlwifi");
  45
  46 static const u16 pcibridge_vendors[PCI_BRIDGE_VENDOR_MAX] = {
  47         PCI_VENDOR_ID_INTEL,
  48         PCI_VENDOR_ID_ATI,
  49         PCI_VENDOR_ID_AMD,
  50         PCI_VENDOR_ID_SI
  51 };
  52
  53 static const u8 ac_to_hwq[] = {
  54         VO_QUEUE,
  55         VI_QUEUE,
  56         BE_QUEUE,
  57         BK_QUEUE
  58 };
  59
  60 static u8 _rtl_mac_to_hwqueue(struct ieee80211_hw *hw,
  61                        struct sk_buff *skb)
  62 {
  63         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  64         __le16 fc = rtl_get_fc(skb);
  65         u8 queue_index = skb_get_queue_mapping(skb);
  66
  67         if (unlikely(ieee80211_is_beacon(fc)))
  68                 return BEACON_QUEUE;
  69         if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
  70                 return MGNT_QUEUE;
  71         if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
  72                 if (ieee80211_is_nullfunc(fc))
  73                         return HIGH_QUEUE;
  74
  75         return ac_to_hwq[queue_index];
  76 }
  77
  78 /* Update PCI dependent default settings*/
  79 static void _rtl_pci_update_default_setting(struct ieee80211_hw *hw)
  80 {
  81         struct rtl_priv *rtlpriv = rtl_priv(hw);
  82         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
  83         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
  84         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
  85         u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
  86         u8 init_aspm;
  87
  88         ppsc->reg_rfps_level = 0;
  89         ppsc->support_aspm = false;
  90
  91         /*Update PCI ASPM setting */
  92         ppsc->const_amdpci_aspm = rtlpci->const_amdpci_aspm;
  93         switch (rtlpci->const_pci_aspm) {
  94         case 0:
  95                 /*No ASPM */
  96                 break;
  97
  98         case 1:
  99                 /*ASPM dynamically enabled/disable. */
 100                 ppsc->reg_rfps_level |= RT_RF_LPS_LEVEL_ASPM;
 101                 break;
 102
 103         case 2:
 104                 /*ASPM with Clock Req dynamically enabled/disable. */
 105                 ppsc->reg_rfps_level |= (RT_RF_LPS_LEVEL_ASPM |
 106                                          RT_RF_OFF_LEVL_CLK_REQ);
 107                 break;
 108
 109         case 3:
 110                 /*
 111                  * Always enable ASPM and Clock Req
 112                  * from initialization to halt.
 113                  * */
 114                 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM);
 115                 ppsc->reg_rfps_level |= (RT_RF_PS_LEVEL_ALWAYS_ASPM |
 116                                          RT_RF_OFF_LEVL_CLK_REQ);
 117                 break;
 118
 119         case 4:
 120                 /*
 121                  * Always enable ASPM without Clock Req
 122                  * from initialization to halt.
 123                  * */
 124                 ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM |
 125                                           RT_RF_OFF_LEVL_CLK_REQ);
 126                 ppsc->reg_rfps_level |= RT_RF_PS_LEVEL_ALWAYS_ASPM;
 127                 break;
 128         }
 129
 130         ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;
 131
 132         /*Update Radio OFF setting */
 133         switch (rtlpci->const_hwsw_rfoff_d3) {
 134         case 1:
 135                 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
 136                         ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
 137                 break;
 138
 139         case 2:
 140                 if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
 141                         ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
 142                 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;
 143                 break;
 144
 145         case 3:
 146                 ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_PCI_D3;
 147                 break;
 148         }
 149
 150         /*Set HW definition to determine if it supports ASPM. */
 151         switch (rtlpci->const_support_pciaspm) {
 152         case 0:{
 153                         /*Not support ASPM. */
 154                         bool support_aspm = false;
 155                         ppsc->support_aspm = support_aspm;
 156                         break;
 157                 }
 158         case 1:{
 159                         /*Support ASPM. */
 160                         bool support_aspm = true;
 161                         bool support_backdoor = true;
 162                         ppsc->support_aspm = support_aspm;
 163
 164                         /*if (priv->oem_id == RT_CID_TOSHIBA &&
 165                            !priv->ndis_adapter.amd_l1_patch)
 166                            support_backdoor = false; */
 167
 168                         ppsc->support_backdoor = support_backdoor;
 169
 170                         break;
 171                 }
 172         case 2:
 173                 /*ASPM value set by chipset. */
 174                 if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL) {
 175                         bool support_aspm = true;
 176                         ppsc->support_aspm = support_aspm;
 177                 }
 178                 break;
 179         default:
 180                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 181                          "switch case not processed\n");
 182                 break;
 183         }
 184
 185         /* toshiba aspm issue, toshiba will set aspm selfly
 186          * so we should not set aspm in driver */
 187         pci_read_config_byte(rtlpci->pdev, 0x80, &init_aspm);
 188         if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8192SE &&
 189                 init_aspm == 0x43)
 190                 ppsc->support_aspm = false;
 191 }
 192
 193 static bool _rtl_pci_platform_switch_device_pci_aspm(
 194                         struct ieee80211_hw *hw,
 195                         u8 value)
 196 {
 197         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 198         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 199
 200         if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE)
 201                 value |= 0x40;
 202
 203         pci_write_config_byte(rtlpci->pdev, 0x80, value);
 204
 205         return false;
 206 }
 207
 208 /*When we set 0x01 to enable clk request. Set 0x0 to disable clk req.*/
 209 static void _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u8 value)
 210 {
 211         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 212         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 213
 214         pci_write_config_byte(rtlpci->pdev, 0x81, value);
 215
 216         if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
 217                 udelay(100);
 218 }
 219
 220 /*Disable RTL8192SE ASPM & Disable Pci Bridge ASPM*/
 221 static void rtl_pci_disable_aspm(struct ieee80211_hw *hw)
 222 {
 223         struct rtl_priv *rtlpriv = rtl_priv(hw);
 224         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 225         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 226         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 227         u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
 228         u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
 229         /*Retrieve original configuration settings. */
 230         u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg;
 231         u16 pcibridge_linkctrlreg = pcipriv->ndis_adapter.
 232                                 pcibridge_linkctrlreg;
 233         u16 aspmlevel = 0;
 234         u8 tmp_u1b = 0;
 235
 236         if (!ppsc->support_aspm)
 237                 return;
 238
 239         if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
 240                 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
 241                          "PCI(Bridge) UNKNOWN\n");
 242
 243                 return;
 244         }
 245
 246         if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
 247                 RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
 248                 _rtl_pci_switch_clk_req(hw, 0x0);
 249         }
 250
 251         /*for promising device will in L0 state after an I/O. */
 252         pci_read_config_byte(rtlpci->pdev, 0x80, &tmp_u1b);
 253
 254         /*Set corresponding value. */
 255         aspmlevel |= BIT(0) | BIT(1);
 256         linkctrl_reg &= ~aspmlevel;
 257         pcibridge_linkctrlreg &= ~(BIT(0) | BIT(1));
 258
 259         _rtl_pci_platform_switch_device_pci_aspm(hw, linkctrl_reg);
 260         udelay(50);
 261
 262         /*4 Disable Pci Bridge ASPM */
 263         pci_write_config_byte(rtlpci->pdev, (num4bytes << 2),
 264                               pcibridge_linkctrlreg);
 265
 266         udelay(50);
 267 }
 268
 269 /*
 270  *Enable RTL8192SE ASPM & Enable Pci Bridge ASPM for
 271  *power saving We should follow the sequence to enable
 272  *RTL8192SE first then enable Pci Bridge ASPM
 273  *or the system will show bluescreen.
 274  */
 275 static void rtl_pci_enable_aspm(struct ieee80211_hw *hw)
 276 {
 277         struct rtl_priv *rtlpriv = rtl_priv(hw);
 278         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 279         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 280         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 281         u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
 282         u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
 283         u16 aspmlevel;
 284         u8 u_pcibridge_aspmsetting;
 285         u8 u_device_aspmsetting;
 286
 287         if (!ppsc->support_aspm)
 288                 return;
 289
 290         if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
 291                 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
 292                          "PCI(Bridge) UNKNOWN\n");
 293                 return;
 294         }
 295
 296         /*4 Enable Pci Bridge ASPM */
 297
 298         u_pcibridge_aspmsetting =
 299             pcipriv->ndis_adapter.pcibridge_linkctrlreg |
 300             rtlpci->const_hostpci_aspm_setting;
 301
 302         if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL)
 303                 u_pcibridge_aspmsetting &= ~BIT(0);
 304
 305         pci_write_config_byte(rtlpci->pdev, (num4bytes << 2),
 306                               u_pcibridge_aspmsetting);
 307
 308         RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
 309                  "PlatformEnableASPM(): Write reg[%x] = %x\n",
 310                  (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10),
 311                  u_pcibridge_aspmsetting);
 312
 313         udelay(50);
 314
 315         /*Get ASPM level (with/without Clock Req) */
 316         aspmlevel = rtlpci->const_devicepci_aspm_setting;
 317         u_device_aspmsetting = pcipriv->ndis_adapter.linkctrl_reg;
 318
 319         /*_rtl_pci_platform_switch_device_pci_aspm(dev,*/
 320         /*(priv->ndis_adapter.linkctrl_reg | ASPMLevel)); */
 321
 322         u_device_aspmsetting |= aspmlevel;
 323
 324         _rtl_pci_platform_switch_device_pci_aspm(hw, u_device_aspmsetting);
 325
 326         if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
 327                 _rtl_pci_switch_clk_req(hw, (ppsc->reg_rfps_level &
 328                                              RT_RF_OFF_LEVL_CLK_REQ) ? 1 : 0);
 329                 RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
 330         }
 331         udelay(100);
 332 }
 333
 334 static bool rtl_pci_get_amd_l1_patch(struct ieee80211_hw *hw)
 335 {
 336         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 337
 338         bool status = false;
 339         u8 offset_e0;
 340         unsigned offset_e4;
 341
 342         pci_write_config_byte(rtlpci->pdev, 0xe0, 0xa0);
 343
 344         pci_read_config_byte(rtlpci->pdev, 0xe0, &offset_e0);
 345
 346         if (offset_e0 == 0xA0) {
 347                 pci_read_config_dword(rtlpci->pdev, 0xe4, &offset_e4);
 348                 if (offset_e4 & BIT(23))
 349                         status = true;
 350         }
 351
 352         return status;
 353 }
 354
 355 static bool rtl_pci_check_buddy_priv(struct ieee80211_hw *hw,
 356                                      struct rtl_priv **buddy_priv)
 357 {
 358         struct rtl_priv *rtlpriv = rtl_priv(hw);
 359         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 360         bool find_buddy_priv = false;
 361         struct rtl_priv *tpriv = NULL;
 362         struct rtl_pci_priv *tpcipriv = NULL;
 363
 364         if (!list_empty(&rtlpriv->glb_var->glb_priv_list)) {
 365                 list_for_each_entry(tpriv, &rtlpriv->glb_var->glb_priv_list,
 366                                     list) {
 367                         if (tpriv) {
 368                                 tpcipriv = (struct rtl_pci_priv *)tpriv->priv;
 369                                 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
 370                                          "pcipriv->ndis_adapter.funcnumber %x\n",
 371                                         pcipriv->ndis_adapter.funcnumber);
 372                                 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
 373                                          "tpcipriv->ndis_adapter.funcnumber %x\n",
 374                                         tpcipriv->ndis_adapter.funcnumber);
 375
 376                                 if ((pcipriv->ndis_adapter.busnumber ==
 377                                      tpcipriv->ndis_adapter.busnumber) &&
 378                                     (pcipriv->ndis_adapter.devnumber ==
 379                                     tpcipriv->ndis_adapter.devnumber) &&
 380                                     (pcipriv->ndis_adapter.funcnumber !=
 381                                     tpcipriv->ndis_adapter.funcnumber)) {
 382                                         find_buddy_priv = true;
 383                                         break;
 384                                 }
 385                         }
 386                 }
 387         }
 388
 389         RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
 390                  "find_buddy_priv %d\n", find_buddy_priv);
 391
 392         if (find_buddy_priv)
 393                 *buddy_priv = tpriv;
 394
 395         return find_buddy_priv;
 396 }
 397
 398 static void rtl_pci_get_linkcontrol_field(struct ieee80211_hw *hw)
 399 {
 400         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 401         struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
 402         u8 capabilityoffset = pcipriv->ndis_adapter.pcibridge_pciehdr_offset;
 403         u8 linkctrl_reg;
 404         u8 num4bbytes;
 405
 406         num4bbytes = (capabilityoffset + 0x10) / 4;
 407
 408         /*Read  Link Control Register */
 409         pci_read_config_byte(rtlpci->pdev, (num4bbytes << 2), &linkctrl_reg);
 410
 411         pcipriv->ndis_adapter.pcibridge_linkctrlreg = linkctrl_reg;
 412 }
 413
 414 static void rtl_pci_parse_configuration(struct pci_dev *pdev,
 415                 struct ieee80211_hw *hw)
 416 {
 417         struct rtl_priv *rtlpriv = rtl_priv(hw);
 418         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
 419
 420         u8 tmp;
 421         u16 linkctrl_reg;
 422
 423         /*Link Control Register */
 424         pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &linkctrl_reg);
 425         pcipriv->ndis_adapter.linkctrl_reg = (u8)linkctrl_reg;
 426
 427         RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE, "Link Control Register =%x\n",
 428                  pcipriv->ndis_adapter.linkctrl_reg);
 429
 430         pci_read_config_byte(pdev, 0x98, &tmp);
 431         tmp |= BIT(4);
 432         pci_write_config_byte(pdev, 0x98, tmp);
 433
 434         tmp = 0x17;
 435         pci_write_config_byte(pdev, 0x70f, tmp);
 436 }
 437
 438 static void rtl_pci_init_aspm(struct ieee80211_hw *hw)
 439 {
 440         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 441
 442         _rtl_pci_update_default_setting(hw);
 443
 444         if (ppsc->reg_rfps_level & RT_RF_PS_LEVEL_ALWAYS_ASPM) {
 445                 /*Always enable ASPM & Clock Req. */
 446                 rtl_pci_enable_aspm(hw);
 447                 RT_SET_PS_LEVEL(ppsc, RT_RF_PS_LEVEL_ALWAYS_ASPM);
 448         }
 449
 450 }
 451
 452 static void _rtl_pci_io_handler_init(struct device *dev,
 453                                      struct ieee80211_hw *hw)
 454 {
 455         struct rtl_priv *rtlpriv = rtl_priv(hw);
 456
 457         rtlpriv->io.dev = dev;
 458
 459         rtlpriv->io.write8_async = pci_write8_async;
 460         rtlpriv->io.write16_async = pci_write16_async;
 461         rtlpriv->io.write32_async = pci_write32_async;
 462
 463         rtlpriv->io.read8_sync = pci_read8_sync;
 464         rtlpriv->io.read16_sync = pci_read16_sync;
 465         rtlpriv->io.read32_sync = pci_read32_sync;
 466
 467 }
 468
 469 static bool _rtl_update_earlymode_info(struct ieee80211_hw *hw,
 470                 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc, u8 tid)
 471 {
 472         struct rtl_priv *rtlpriv = rtl_priv(hw);
 473         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 474         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 475         struct sk_buff *next_skb;
 476         u8 additionlen = FCS_LEN;
 477
 478         /* here open is 4, wep/tkip is 8, aes is 12*/
 479         if (info->control.hw_key)
 480                 additionlen += info->control.hw_key->icv_len;
 481
 482         /* The most skb num is 6 */
 483         tcb_desc->empkt_num = 0;
 484         spin_lock_bh(&rtlpriv->locks.waitq_lock);
 485         skb_queue_walk(&rtlpriv->mac80211.skb_waitq[tid], next_skb) {
 486                 struct ieee80211_tx_info *next_info;
 487
 488                 next_info = IEEE80211_SKB_CB(next_skb);
 489                 if (next_info->flags & IEEE80211_TX_CTL_AMPDU) {
 490                         tcb_desc->empkt_len[tcb_desc->empkt_num] =
 491                                 next_skb->len + additionlen;
 492                         tcb_desc->empkt_num++;
 493                 } else {
 494                         break;
 495                 }
 496
 497                 if (skb_queue_is_last(&rtlpriv->mac80211.skb_waitq[tid],
 498                                       next_skb))
 499                         break;
 500
 501                 if (tcb_desc->empkt_num >= rtlhal->max_earlymode_num)
 502                         break;
 503         }
 504         spin_unlock_bh(&rtlpriv->locks.waitq_lock);
 505
 506         return true;
 507 }
 508
 509 /* just for early mode now */
 510 static void _rtl_pci_tx_chk_waitq(struct ieee80211_hw *hw)
 511 {
 512         struct rtl_priv *rtlpriv = rtl_priv(hw);
 513         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 514         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 515         struct sk_buff *skb = NULL;
 516         struct ieee80211_tx_info *info = NULL;
 517         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 518         int tid;
 519
 520         if (!rtlpriv->rtlhal.earlymode_enable)
 521                 return;
 522
 523         if (rtlpriv->dm.supp_phymode_switch &&
 524             (rtlpriv->easy_concurrent_ctl.switch_in_process ||
 525             (rtlpriv->buddy_priv &&
 526             rtlpriv->buddy_priv->easy_concurrent_ctl.switch_in_process)))
 527                 return;
 528         /* we juse use em for BE/BK/VI/VO */
 529         for (tid = 7; tid >= 0; tid--) {
 530                 u8 hw_queue = ac_to_hwq[rtl_tid_to_ac(tid)];
 531                 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
 532                 while (!mac->act_scanning &&
 533                        rtlpriv->psc.rfpwr_state == ERFON) {
 534                         struct rtl_tcb_desc tcb_desc;
 535                         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
 536
 537                         spin_lock_bh(&rtlpriv->locks.waitq_lock);
 538                         if (!skb_queue_empty(&mac->skb_waitq[tid]) &&
 539                             (ring->entries - skb_queue_len(&ring->queue) >
 540                              rtlhal->max_earlymode_num)) {
 541                                 skb = skb_dequeue(&mac->skb_waitq[tid]);
 542                         } else {
 543                                 spin_unlock_bh(&rtlpriv->locks.waitq_lock);
 544                                 break;
 545                         }
 546                         spin_unlock_bh(&rtlpriv->locks.waitq_lock);
 547
 548                         /* Some macaddr can't do early mode. like
 549                          * multicast/broadcast/no_qos data */
 550                         info = IEEE80211_SKB_CB(skb);
 551                         if (info->flags & IEEE80211_TX_CTL_AMPDU)
 552                                 _rtl_update_earlymode_info(hw, skb,
 553                                                            &tcb_desc, tid);
 554
 555                         rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc);
 556                 }
 557         }
 558 }
 559
 560
 561 static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio)
 562 {
 563         struct rtl_priv *rtlpriv = rtl_priv(hw);
 564         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 565
 566         struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];
 567
 568         while (skb_queue_len(&ring->queue)) {
 569                 struct rtl_tx_desc *entry = &ring->desc[ring->idx];
 570                 struct sk_buff *skb;
 571                 struct ieee80211_tx_info *info;
 572                 __le16 fc;
 573                 u8 tid;
 574
 575                 u8 own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) entry, true,
 576                                                           HW_DESC_OWN);
 577
 578                 /*beacon packet will only use the first
 579                  *descriptor by defaut, and the own may not
 580                  *be cleared by the hardware
 581                  */
 582                 if (own)
 583                         return;
 584                 ring->idx = (ring->idx + 1) % ring->entries;
 585
 586                 skb = __skb_dequeue(&ring->queue);
 587                 pci_unmap_single(rtlpci->pdev,
 588                                  rtlpriv->cfg->ops->
 589                                              get_desc((u8 *) entry, true,
 590                                                       HW_DESC_TXBUFF_ADDR),
 591                                  skb->len, PCI_DMA_TODEVICE);
 592
 593                 /* remove early mode header */
 594                 if (rtlpriv->rtlhal.earlymode_enable)
 595                         skb_pull(skb, EM_HDR_LEN);
 596
 597                 RT_TRACE(rtlpriv, (COMP_INTR | COMP_SEND), DBG_TRACE,
 598                          "new ring->idx:%d, free: skb_queue_len:%d, free: seq:%x\n",
 599                          ring->idx,
 600                          skb_queue_len(&ring->queue),
 601                          *(u16 *) (skb->data + 22));
 602
 603                 if (prio == TXCMD_QUEUE) {
 604                         dev_kfree_skb(skb);
 605                         goto tx_status_ok;
 606
 607                 }
 608
 609                 /* for sw LPS, just after NULL skb send out, we can
 610                  * sure AP knows we are sleeping, we should not let
 611                  * rf sleep
 612                  */
 613                 fc = rtl_get_fc(skb);
 614                 if (ieee80211_is_nullfunc(fc)) {
 615                         if (ieee80211_has_pm(fc)) {
 616                                 rtlpriv->mac80211.offchan_delay = true;
 617                                 rtlpriv->psc.state_inap = true;
 618                         } else {
 619                                 rtlpriv->psc.state_inap = false;
 620                         }
 621                 }
 622                 if (ieee80211_is_action(fc)) {
 623                         struct ieee80211_mgmt *action_frame =
 624                                 (struct ieee80211_mgmt *)skb->data;
 625                         if (action_frame->u.action.u.ht_smps.action ==
 626                             WLAN_HT_ACTION_SMPS) {
 627                                 dev_kfree_skb(skb);
 628                                 goto tx_status_ok;
 629                         }
 630                 }
 631
 632                 /* update tid tx pkt num */
 633                 tid = rtl_get_tid(skb);
 634                 if (tid <= 7)
 635                         rtlpriv->link_info.tidtx_inperiod[tid]++;
 636
 637                 info = IEEE80211_SKB_CB(skb);
 638                 ieee80211_tx_info_clear_status(info);
 639
 640                 info->flags |= IEEE80211_TX_STAT_ACK;
 641                 /*info->status.rates[0].count = 1; */
 642
 643                 ieee80211_tx_status_irqsafe(hw, skb);
 644
 645                 if ((ring->entries - skb_queue_len(&ring->queue))
 646                                 == 2) {
 647
 648                         RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
 649                                  "more desc left, wake skb_queue@%d, ring->idx = %d, skb_queue_len = 0x%d\n",
 650                                  prio, ring->idx,
 651                                  skb_queue_len(&ring->queue));
 652
 653                         ieee80211_wake_queue(hw,
 654                                         skb_get_queue_mapping
 655                                         (skb));
 656                 }
 657 tx_status_ok:
 658                 skb = NULL;
 659         }
 660
 661         if (((rtlpriv->link_info.num_rx_inperiod +
 662                 rtlpriv->link_info.num_tx_inperiod) > 8) ||
 663                 (rtlpriv->link_info.num_rx_inperiod > 2)) {
 664                 rtlpriv->enter_ps = false;
 665                 schedule_work(&rtlpriv->works.lps_change_work);
 666         }
 667 }
 668
 669 static void _rtl_receive_one(struct ieee80211_hw *hw, struct sk_buff *skb,
 670                              struct ieee80211_rx_status rx_status)
 671 {
 672         struct rtl_priv *rtlpriv = rtl_priv(hw);
 673         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
 674         __le16 fc = rtl_get_fc(skb);
 675         bool unicast = false;
 676         struct sk_buff *uskb = NULL;
 677         u8 *pdata;
 678
 679
 680         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 681
 682         if (is_broadcast_ether_addr(hdr->addr1)) {
 683                 ;/*TODO*/
 684         } else if (is_multicast_ether_addr(hdr->addr1)) {
 685                 ;/*TODO*/
 686         } else {
 687                 unicast = true;
 688                 rtlpriv->stats.rxbytesunicast += skb->len;
 689         }
 690
 691         rtl_is_special_data(hw, skb, false);
 692
 693         if (ieee80211_is_data(fc)) {
 694                 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
 695
 696                 if (unicast)
 697                         rtlpriv->link_info.num_rx_inperiod++;
 698         }
 699
 700         /* static bcn for roaming */
 701         rtl_beacon_statistic(hw, skb);
 702         rtl_p2p_info(hw, (void *)skb->data, skb->len);
 703
 704         /* for sw lps */
 705         rtl_swlps_beacon(hw, (void *)skb->data, skb->len);
 706         rtl_recognize_peer(hw, (void *)skb->data, skb->len);
 707         if ((rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP) &&
 708             (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G) &&
 709              (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)))
 710                 return;
 711
 712         if (unlikely(!rtl_action_proc(hw, skb, false)))
 713                 return;
 714
 715         uskb = dev_alloc_skb(skb->len + 128);
 716         if (!uskb)
 717                 return;         /* exit if allocation failed */
 718         memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status, sizeof(rx_status));
 719         pdata = (u8 *)skb_put(uskb, skb->len);
 720         memcpy(pdata, skb->data, skb->len);
 721
 722         ieee80211_rx_irqsafe(hw, uskb);
 723 }
 724
 725 static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
 726 {
 727         struct rtl_priv *rtlpriv = rtl_priv(hw);
 728         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 729         int rx_queue_idx = RTL_PCI_RX_MPDU_QUEUE;
 730
 731         struct ieee80211_rx_status rx_status = { 0 };
 732         unsigned int count = rtlpci->rxringcount;
 733         u8 own;
 734         u8 tmp_one;
 735         u32 bufferaddress;
 736
 737         struct rtl_stats stats = {
 738                 .signal = 0,
 739                 .rate = 0,
 740         };
 741         int index = rtlpci->rx_ring[rx_queue_idx].idx;
 742
 743         if (rtlpci->driver_is_goingto_unload)
 744                 return;
 745         /*RX NORMAL PKT */
 746         while (count--) {
 747                 /*rx descriptor */
 748                 struct rtl_rx_desc *pdesc = &rtlpci->rx_ring[rx_queue_idx].desc[
 749                                 index];
 750                 /*rx pkt */
 751                 struct sk_buff *skb = rtlpci->rx_ring[rx_queue_idx].rx_buf[
 752                                 index];
 753                 struct sk_buff *new_skb = NULL;
 754
 755                 own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) pdesc,
 756                                                        false, HW_DESC_OWN);
 757
 758                 /*wait data to be filled by hardware */
 759                 if (own)
 760                         break;
 761
 762                 rtlpriv->cfg->ops->query_rx_desc(hw, &stats,
 763                                                  &rx_status,
 764                                                  (u8 *) pdesc, skb);
 765
 766                 if (stats.crc || stats.hwerror)
 767                         goto done;
 768
 769                 new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
 770                 if (unlikely(!new_skb)) {
 771                         RT_TRACE(rtlpriv, (COMP_INTR | COMP_RECV), DBG_DMESG,
 772                                  "can't alloc skb for rx\n");
 773                         goto done;
 774                 }
 775                 kmemleak_not_leak(new_skb);
 776
 777                 pci_unmap_single(rtlpci->pdev,
 778                                  *((dma_addr_t *) skb->cb),
 779                                  rtlpci->rxbuffersize,
 780                                  PCI_DMA_FROMDEVICE);
 781
 782                 skb_put(skb, rtlpriv->cfg->ops->get_desc((u8 *) pdesc, false,
 783                         HW_DESC_RXPKT_LEN));
 784                 skb_reserve(skb, stats.rx_drvinfo_size + stats.rx_bufshift);
 785
 786                 /*
 787                  * NOTICE This can not be use for mac80211,
 788                  * this is done in mac80211 code,
 789                  * if you done here sec DHCP will fail
 790                  * skb_trim(skb, skb->len - 4);
 791                  */
 792
 793                 _rtl_receive_one(hw, skb, rx_status);
 794
 795                 if (((rtlpriv->link_info.num_rx_inperiod +
 796                       rtlpriv->link_info.num_tx_inperiod) > 8) ||
 797                       (rtlpriv->link_info.num_rx_inperiod > 2)) {
 798                         rtlpriv->enter_ps = false;
 799                         schedule_work(&rtlpriv->works.lps_change_work);
 800                 }
 801
 802                 dev_kfree_skb_any(skb);
 803                 skb = new_skb;
 804
 805                 rtlpci->rx_ring[rx_queue_idx].rx_buf[index] = skb;
 806                 *((dma_addr_t *) skb->cb) =
 807                             pci_map_single(rtlpci->pdev, skb_tail_pointer(skb),
 808                                            rtlpci->rxbuffersize,
 809                                            PCI_DMA_FROMDEVICE);
 810
 811 done:
 812                 bufferaddress = (*((dma_addr_t *)skb->cb));
 813                 if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress))
 814                         return;
 815                 tmp_one = 1;
 816                 rtlpriv->cfg->ops->set_desc((u8 *) pdesc, false,
 817                                             HW_DESC_RXBUFF_ADDR,
 818                                             (u8 *)&bufferaddress);
 819                 rtlpriv->cfg->ops->set_desc((u8 *)pdesc, false,
 820                                             HW_DESC_RXPKT_LEN,
 821                                             (u8 *)&rtlpci->rxbuffersize);
 822
 823                 if (index == rtlpci->rxringcount - 1)
 824                         rtlpriv->cfg->ops->set_desc((u8 *)pdesc, false,
 825                                                     HW_DESC_RXERO,
 826                                                     &tmp_one);
 827
 828                 rtlpriv->cfg->ops->set_desc((u8 *)pdesc, false, HW_DESC_RXOWN,
 829                                             &tmp_one);
 830
 831                 index = (index + 1) % rtlpci->rxringcount;
 832         }
 833
 834         rtlpci->rx_ring[rx_queue_idx].idx = index;
 835 }
 836
 837 static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
 838 {
 839         struct ieee80211_hw *hw = dev_id;
 840         struct rtl_priv *rtlpriv = rtl_priv(hw);
 841         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 842         unsigned long flags;
 843         u32 inta = 0;
 844         u32 intb = 0;
 845         irqreturn_t ret = IRQ_HANDLED;
 846
 847         spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
 848
 849         /*read ISR: 4/8bytes */
 850         rtlpriv->cfg->ops->interrupt_recognized(hw, &inta, &intb);
 851
 852         /*Shared IRQ or HW disappared */
 853         if (!inta || inta == 0xffff) {
 854                 ret = IRQ_NONE;
 855                 goto done;
 856         }
 857
 858         /*<1> beacon related */
 859         if (inta & rtlpriv->cfg->maps[RTL_IMR_TBDOK]) {
 860                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 861                          "beacon ok interrupt!\n");
 862         }
 863
 864         if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_TBDER])) {
 865                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 866                          "beacon err interrupt!\n");
 867         }
 868
 869         if (inta & rtlpriv->cfg->maps[RTL_IMR_BDOK]) {
 870                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE, "beacon interrupt!\n");
 871         }
 872
 873         if (inta & rtlpriv->cfg->maps[RTL_IMR_BCNINT]) {
 874                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 875                          "prepare beacon for interrupt!\n");
 876                 tasklet_schedule(&rtlpriv->works.irq_prepare_bcn_tasklet);
 877         }
 878
 879         /*<3> Tx related */
 880         if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_TXFOVW]))
 881                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "IMR_TXFOVW!\n");
 882
 883         if (inta & rtlpriv->cfg->maps[RTL_IMR_MGNTDOK]) {
 884                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 885                          "Manage ok interrupt!\n");
 886                 _rtl_pci_tx_isr(hw, MGNT_QUEUE);
 887         }
 888
 889         if (inta & rtlpriv->cfg->maps[RTL_IMR_HIGHDOK]) {
 890                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 891                          "HIGH_QUEUE ok interrupt!\n");
 892                 _rtl_pci_tx_isr(hw, HIGH_QUEUE);
 893         }
 894
 895         if (inta & rtlpriv->cfg->maps[RTL_IMR_BKDOK]) {
 896                 rtlpriv->link_info.num_tx_inperiod++;
 897
 898                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 899                          "BK Tx OK interrupt!\n");
 900                 _rtl_pci_tx_isr(hw, BK_QUEUE);
 901         }
 902
 903         if (inta & rtlpriv->cfg->maps[RTL_IMR_BEDOK]) {
 904                 rtlpriv->link_info.num_tx_inperiod++;
 905
 906                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 907                          "BE TX OK interrupt!\n");
 908                 _rtl_pci_tx_isr(hw, BE_QUEUE);
 909         }
 910
 911         if (inta & rtlpriv->cfg->maps[RTL_IMR_VIDOK]) {
 912                 rtlpriv->link_info.num_tx_inperiod++;
 913
 914                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 915                          "VI TX OK interrupt!\n");
 916                 _rtl_pci_tx_isr(hw, VI_QUEUE);
 917         }
 918
 919         if (inta & rtlpriv->cfg->maps[RTL_IMR_VODOK]) {
 920                 rtlpriv->link_info.num_tx_inperiod++;
 921
 922                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 923                          "Vo TX OK interrupt!\n");
 924                 _rtl_pci_tx_isr(hw, VO_QUEUE);
 925         }
 926
 927         if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) {
 928                 if (inta & rtlpriv->cfg->maps[RTL_IMR_COMDOK]) {
 929                         rtlpriv->link_info.num_tx_inperiod++;
 930
 931                         RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 932                                  "CMD TX OK interrupt!\n");
 933                         _rtl_pci_tx_isr(hw, TXCMD_QUEUE);
 934                 }
 935         }
 936
 937         /*<2> Rx related */
 938         if (inta & rtlpriv->cfg->maps[RTL_IMR_ROK]) {
 939                 RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE, "Rx ok interrupt!\n");
 940                 _rtl_pci_rx_interrupt(hw);
 941         }
 942
 943         if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_RDU])) {
 944                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 945                          "rx descriptor unavailable!\n");
 946                 _rtl_pci_rx_interrupt(hw);
 947         }
 948
 949         if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) {
 950                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "rx overflow !\n");
 951                 _rtl_pci_rx_interrupt(hw);
 952         }
 953
 954         /*fw related*/
 955         if (rtlhal->hw_type == HARDWARE_TYPE_RTL8723AE) {
 956                 if (inta & rtlpriv->cfg->maps[RTL_IMR_C2HCMD]) {
 957                         RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
 958                                  "firmware interrupt!\n");
 959                         queue_delayed_work(rtlpriv->works.rtl_wq,
 960                                            &rtlpriv->works.fwevt_wq, 0);
 961                 }
 962         }
 963
 964         if (rtlpriv->rtlhal.earlymode_enable)
 965                 tasklet_schedule(&rtlpriv->works.irq_tasklet);
 966
 967 done:
 968         spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
 969         return ret;
 970 }
 971
 972 static void _rtl_pci_irq_tasklet(struct ieee80211_hw *hw)
 973 {
 974         _rtl_pci_tx_chk_waitq(hw);
 975 }
 976
 977 static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
 978 {
 979         struct rtl_priv *rtlpriv = rtl_priv(hw);
 980         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 981         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 982         struct rtl8192_tx_ring *ring = NULL;
 983         struct ieee80211_hdr *hdr = NULL;
 984         struct ieee80211_tx_info *info = NULL;
 985         struct sk_buff *pskb = NULL;
 986         struct rtl_tx_desc *pdesc = NULL;
 987         struct rtl_tcb_desc tcb_desc;
 988         u8 temp_one = 1;
 989
 990         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
 991         ring = &rtlpci->tx_ring[BEACON_QUEUE];
 992         pskb = __skb_dequeue(&ring->queue);
 993         if (pskb) {
 994                 struct rtl_tx_desc *entry = &ring->desc[ring->idx];
 995                 pci_unmap_single(rtlpci->pdev, rtlpriv->cfg->ops->get_desc(
 996                                  (u8 *) entry, true, HW_DESC_TXBUFF_ADDR),
 997                                  pskb->len, PCI_DMA_TODEVICE);
 998                 kfree_skb(pskb);
 999         }
1000
1001         /*NB: the beacon data buffer must be 32-bit aligned. */
1002         pskb = ieee80211_beacon_get(hw, mac->vif);
1003         if (pskb == NULL)
1004                 return;
1005         hdr = rtl_get_hdr(pskb);
1006         info = IEEE80211_SKB_CB(pskb);
1007         pdesc = &ring->desc[0];
1008         rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc,
1009                 info, NULL, pskb, BEACON_QUEUE, &tcb_desc);
1010
1011         __skb_queue_tail(&ring->queue, pskb);
1012
1013         rtlpriv->cfg->ops->set_desc((u8 *) pdesc, true, HW_DESC_OWN,
1014                                     &temp_one);
1015
1016         return;
1017 }
1018
1019 static void _rtl_pci_init_trx_var(struct ieee80211_hw *hw)
1020 {
1021         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1022         u8 i;
1023
1024         for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1025                 rtlpci->txringcount[i] = RT_TXDESC_NUM;
1026
1027         /*
1028          *we just alloc 2 desc for beacon queue,
1029          *because we just need first desc in hw beacon.
1030          */
1031         rtlpci->txringcount[BEACON_QUEUE] = 2;
1032
1033         /*
1034          *BE queue need more descriptor for performance
1035          *consideration or, No more tx desc will happen,
1036          *and may cause mac80211 mem leakage.
1037          */
1038         rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE;
1039
1040         rtlpci->rxbuffersize = 9100;    /*2048/1024; */
1041         rtlpci->rxringcount = RTL_PCI_MAX_RX_COUNT;     /*64; */
1042 }
1043
1044 static void _rtl_pci_init_struct(struct ieee80211_hw *hw,
1045                 struct pci_dev *pdev)
1046 {
1047         struct rtl_priv *rtlpriv = rtl_priv(hw);
1048         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1049         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1050         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1051
1052         rtlpci->up_first_time = true;
1053         rtlpci->being_init_adapter = false;
1054
1055         rtlhal->hw = hw;
1056         rtlpci->pdev = pdev;
1057
1058         /*Tx/Rx related var */
1059         _rtl_pci_init_trx_var(hw);
1060
1061         /*IBSS*/ mac->beacon_interval = 100;
1062
1063         /*AMPDU*/
1064         mac->min_space_cfg = 0;
1065         mac->max_mss_density = 0;
1066         /*set sane AMPDU defaults */
1067         mac->current_ampdu_density = 7;
1068         mac->current_ampdu_factor = 3;
1069
1070         /*QOS*/
1071         rtlpci->acm_method = eAcmWay2_SW;
1072
1073         /*task */
1074         tasklet_init(&rtlpriv->works.irq_tasklet,
1075                      (void (*)(unsigned long))_rtl_pci_irq_tasklet,
1076                      (unsigned long)hw);
1077         tasklet_init(&rtlpriv->works.irq_prepare_bcn_tasklet,
1078                      (void (*)(unsigned long))_rtl_pci_prepare_bcn_tasklet,
1079                      (unsigned long)hw);
1080         INIT_WORK(&rtlpriv->works.lps_change_work,
1081                   rtl_lps_change_work_callback);
1082 }
1083
1084 static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw,
1085                                  unsigned int prio, unsigned int entries)
1086 {
1087         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1088         struct rtl_priv *rtlpriv = rtl_priv(hw);
1089         struct rtl_tx_desc *ring;
1090         dma_addr_t dma;
1091         u32 nextdescaddress;
1092         int i;
1093
1094         ring = pci_alloc_consistent(rtlpci->pdev,
1095                                     sizeof(*ring) * entries, &dma);
1096
1097         if (!ring || (unsigned long)ring & 0xFF) {
1098                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1099                          "Cannot allocate TX ring (prio = %d)\n", prio);
1100                 return -ENOMEM;
1101         }
1102
1103         memset(ring, 0, sizeof(*ring) * entries);
1104         rtlpci->tx_ring[prio].desc = ring;
1105         rtlpci->tx_ring[prio].dma = dma;
1106         rtlpci->tx_ring[prio].idx = 0;
1107         rtlpci->tx_ring[prio].entries = entries;
1108         skb_queue_head_init(&rtlpci->tx_ring[prio].queue);
1109
1110         RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, "queue:%d, ring_addr:%p\n",
1111                  prio, ring);
1112
1113         for (i = 0; i < entries; i++) {
1114                 nextdescaddress = (u32) dma +
1115                                               ((i + 1) % entries) *
1116                                               sizeof(*ring);
1117
1118                 rtlpriv->cfg->ops->set_desc((u8 *)&(ring[i]),
1119                                             true, HW_DESC_TX_NEXTDESC_ADDR,
1120                                             (u8 *)&nextdescaddress);
1121         }
1122
1123         return 0;
1124 }
1125
1126 static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw)
1127 {
1128         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1129         struct rtl_priv *rtlpriv = rtl_priv(hw);
1130         struct rtl_rx_desc *entry = NULL;
1131         int i, rx_queue_idx;
1132         u8 tmp_one = 1;
1133
1134         /*
1135          *rx_queue_idx 0:RX_MPDU_QUEUE
1136          *rx_queue_idx 1:RX_CMD_QUEUE
1137          */
1138         for (rx_queue_idx = 0; rx_queue_idx < RTL_PCI_MAX_RX_QUEUE;
1139              rx_queue_idx++) {
1140                 rtlpci->rx_ring[rx_queue_idx].desc =
1141                     pci_alloc_consistent(rtlpci->pdev,
1142                                          sizeof(*rtlpci->rx_ring[rx_queue_idx].
1143                                                 desc) * rtlpci->rxringcount,
1144                                          &rtlpci->rx_ring[rx_queue_idx].dma);
1145
1146                 if (!rtlpci->rx_ring[rx_queue_idx].desc ||
1147                     (unsigned long)rtlpci->rx_ring[rx_queue_idx].desc & 0xFF) {
1148                         RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1149                                  "Cannot allocate RX ring\n");
1150                         return -ENOMEM;
1151                 }
1152
1153                 memset(rtlpci->rx_ring[rx_queue_idx].desc, 0,
1154                        sizeof(*rtlpci->rx_ring[rx_queue_idx].desc) *
1155                        rtlpci->rxringcount);
1156
1157                 rtlpci->rx_ring[rx_queue_idx].idx = 0;
1158
1159                 /* If amsdu_8k is disabled, set buffersize to 4096. This
1160                  * change will reduce memory fragmentation.
1161                  */
1162                 if (rtlpci->rxbuffersize > 4096 &&
1163                     rtlpriv->rtlhal.disable_amsdu_8k)
1164                         rtlpci->rxbuffersize = 4096;
1165
1166                 for (i = 0; i < rtlpci->rxringcount; i++) {
1167                         struct sk_buff *skb =
1168                             dev_alloc_skb(rtlpci->rxbuffersize);
1169                         u32 bufferaddress;
1170                         if (!skb)
1171                                 return 0;
1172                         kmemleak_not_leak(skb);
1173                         entry = &rtlpci->rx_ring[rx_queue_idx].desc[i];
1174
1175                         /*skb->dev = dev; */
1176
1177                         rtlpci->rx_ring[rx_queue_idx].rx_buf[i] = skb;
1178
1179                         /*
1180                          *just set skb->cb to mapping addr
1181                          *for pci_unmap_single use
1182                          */
1183                         *((dma_addr_t *) skb->cb) =
1184                             pci_map_single(rtlpci->pdev, skb_tail_pointer(skb),
1185                                            rtlpci->rxbuffersize,
1186                                            PCI_DMA_FROMDEVICE);
1187
1188                         bufferaddress = (*((dma_addr_t *)skb->cb));
1189                         if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress)) {
1190                                 dev_kfree_skb_any(skb);
1191                                 return 1;
1192                         }
1193                         rtlpriv->cfg->ops->set_desc((u8 *)entry, false,
1194                                                     HW_DESC_RXBUFF_ADDR,
1195                                                     (u8 *)&bufferaddress);
1196                         rtlpriv->cfg->ops->set_desc((u8 *)entry, false,
1197                                                     HW_DESC_RXPKT_LEN,
1198                                                     (u8 *)&rtlpci->
1199                                                     rxbuffersize);
1200                         rtlpriv->cfg->ops->set_desc((u8 *) entry, false,
1201                                                     HW_DESC_RXOWN,
1202                                                     &tmp_one);
1203                 }
1204
1205                 rtlpriv->cfg->ops->set_desc((u8 *) entry, false,
1206                                             HW_DESC_RXERO, &tmp_one);
1207         }
1208         return 0;
1209 }
1210
1211 static void _rtl_pci_free_tx_ring(struct ieee80211_hw *hw,
1212                 unsigned int prio)
1213 {
1214         struct rtl_priv *rtlpriv = rtl_priv(hw);
1215         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1216         struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];
1217
1218         while (skb_queue_len(&ring->queue)) {
1219                 struct rtl_tx_desc *entry = &ring->desc[ring->idx];
1220                 struct sk_buff *skb = __skb_dequeue(&ring->queue);
1221
1222                 pci_unmap_single(rtlpci->pdev,
1223                                  rtlpriv->cfg->
1224                                              ops->get_desc((u8 *) entry, true,
1225                                                    HW_DESC_TXBUFF_ADDR),
1226                                  skb->len, PCI_DMA_TODEVICE);
1227                 kfree_skb(skb);
1228                 ring->idx = (ring->idx + 1) % ring->entries;
1229         }
1230
1231         if (ring->desc) {
1232                 pci_free_consistent(rtlpci->pdev,
1233                                     sizeof(*ring->desc) * ring->entries,
1234                                     ring->desc, ring->dma);
1235                 ring->desc = NULL;
1236         }
1237 }
1238
1239 static void _rtl_pci_free_rx_ring(struct rtl_pci *rtlpci)
1240 {
1241         int i, rx_queue_idx;
1242
1243         /*rx_queue_idx 0:RX_MPDU_QUEUE */
1244         /*rx_queue_idx 1:RX_CMD_QUEUE */
1245         for (rx_queue_idx = 0; rx_queue_idx < RTL_PCI_MAX_RX_QUEUE;
1246              rx_queue_idx++) {
1247                 for (i = 0; i < rtlpci->rxringcount; i++) {
1248                         struct sk_buff *skb =
1249                             rtlpci->rx_ring[rx_queue_idx].rx_buf[i];
1250                         if (!skb)
1251                                 continue;
1252
1253                         pci_unmap_single(rtlpci->pdev,
1254                                          *((dma_addr_t *) skb->cb),
1255                                          rtlpci->rxbuffersize,
1256                                          PCI_DMA_FROMDEVICE);
1257                         kfree_skb(skb);
1258                 }
1259
1260                 if (rtlpci->rx_ring[rx_queue_idx].desc) {
1261                         pci_free_consistent(rtlpci->pdev,
1262                                     sizeof(*rtlpci->rx_ring[rx_queue_idx].
1263                                            desc) * rtlpci->rxringcount,
1264                                     rtlpci->rx_ring[rx_queue_idx].desc,
1265                                     rtlpci->rx_ring[rx_queue_idx].dma);
1266                         rtlpci->rx_ring[rx_queue_idx].desc = NULL;
1267                 }
1268         }
1269 }
1270
1271 static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw)
1272 {
1273         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1274         int ret;
1275         int i;
1276
1277         ret = _rtl_pci_init_rx_ring(hw);
1278         if (ret)
1279                 return ret;
1280
1281         for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
1282                 ret = _rtl_pci_init_tx_ring(hw, i,
1283                                  rtlpci->txringcount[i]);
1284                 if (ret)
1285                         goto err_free_rings;
1286         }
1287
1288         return 0;
1289
1290 err_free_rings:
1291         _rtl_pci_free_rx_ring(rtlpci);
1292
1293         for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1294                 if (rtlpci->tx_ring[i].desc)
1295                         _rtl_pci_free_tx_ring(hw, i);
1296
1297         return 1;
1298 }
1299
1300 static int _rtl_pci_deinit_trx_ring(struct ieee80211_hw *hw)
1301 {
1302         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1303         u32 i;
1304
1305         /*free rx rings */
1306         _rtl_pci_free_rx_ring(rtlpci);
1307
1308         /*free tx rings */
1309         for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
1310                 _rtl_pci_free_tx_ring(hw, i);
1311
1312         return 0;
1313 }
1314
1315 int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
1316 {
1317         struct rtl_priv *rtlpriv = rtl_priv(hw);
1318         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1319         int i, rx_queue_idx;
1320         unsigned long flags;
1321         u8 tmp_one = 1;
1322
1323         /*rx_queue_idx 0:RX_MPDU_QUEUE */
1324         /*rx_queue_idx 1:RX_CMD_QUEUE */
1325         for (rx_queue_idx = 0; rx_queue_idx < RTL_PCI_MAX_RX_QUEUE;
1326              rx_queue_idx++) {
1327                 /*
1328                  *force the rx_ring[RX_MPDU_QUEUE/
1329                  *RX_CMD_QUEUE].idx to the first one
1330                  */
1331                 if (rtlpci->rx_ring[rx_queue_idx].desc) {
1332                         struct rtl_rx_desc *entry = NULL;
1333
1334                         for (i = 0; i < rtlpci->rxringcount; i++) {
1335                                 entry = &rtlpci->rx_ring[rx_queue_idx].desc[i];
1336                                 rtlpriv->cfg->ops->set_desc((u8 *) entry,
1337                                                             false,
1338                                                             HW_DESC_RXOWN,
1339                                                             &tmp_one);
1340                         }
1341                         rtlpci->rx_ring[rx_queue_idx].idx = 0;
1342                 }
1343         }
1344
1345         /*
1346          *after reset, release previous pending packet,
1347          *and force the  tx idx to the first one
1348          */
1349         for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
1350                 if (rtlpci->tx_ring[i].desc) {
1351                         struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[i];
1352
1353                         while (skb_queue_len(&ring->queue)) {
1354                                 struct rtl_tx_desc *entry;
1355                                 struct sk_buff *skb;
1356
1357                                 spin_lock_irqsave(&rtlpriv->locks.irq_th_lock,
1358                                                   flags);
1359                                 entry = &ring->desc[ring->idx];
1360                                 skb = __skb_dequeue(&ring->queue);
1361                                 pci_unmap_single(rtlpci->pdev,
1362                                                  rtlpriv->cfg->ops->
1363                                                          get_desc((u8 *)
1364                                                          entry,
1365                                                          true,
1366                                                          HW_DESC_TXBUFF_ADDR),
1367                                                  skb->len, PCI_DMA_TODEVICE);
1368                                 ring->idx = (ring->idx + 1) % ring->entries;
1369                                 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock,
1370                                                   flags);
1371                                 kfree_skb(skb);
1372                         }
1373                         ring->idx = 0;
1374                 }
1375         }
1376
1377         return 0;
1378 }
1379
1380 static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw,
1381                                         struct ieee80211_sta *sta,
1382                                         struct sk_buff *skb)
1383 {
1384         struct rtl_priv *rtlpriv = rtl_priv(hw);
1385         struct rtl_sta_info *sta_entry = NULL;
1386         u8 tid = rtl_get_tid(skb);
1387         __le16 fc = rtl_get_fc(skb);
1388
1389         if (!sta)
1390                 return false;
1391         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1392
1393         if (!rtlpriv->rtlhal.earlymode_enable)
1394                 return false;
1395         if (ieee80211_is_nullfunc(fc))
1396                 return false;
1397         if (ieee80211_is_qos_nullfunc(fc))
1398                 return false;
1399         if (ieee80211_is_pspoll(fc))
1400                 return false;
1401         if (sta_entry->tids[tid].agg.agg_state != RTL_AGG_OPERATIONAL)
1402                 return false;
1403         if (_rtl_mac_to_hwqueue(hw, skb) > VO_QUEUE)
1404                 return false;
1405         if (tid > 7)
1406                 return false;
1407
1408         /* maybe every tid should be checked */
1409         if (!rtlpriv->link_info.higher_busytxtraffic[tid])
1410                 return false;
1411
1412         spin_lock_bh(&rtlpriv->locks.waitq_lock);
1413         skb_queue_tail(&rtlpriv->mac80211.skb_waitq[tid], skb);
1414         spin_unlock_bh(&rtlpriv->locks.waitq_lock);
1415
1416         return true;
1417 }
1418
1419 static int rtl_pci_tx(struct ieee80211_hw *hw,
1420                       struct ieee80211_sta *sta,
1421                       struct sk_buff *skb,
1422                       struct rtl_tcb_desc *ptcb_desc)
1423 {
1424         struct rtl_priv *rtlpriv = rtl_priv(hw);
1425         struct rtl_sta_info *sta_entry = NULL;
1426         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1427         struct rtl8192_tx_ring *ring;
1428         struct rtl_tx_desc *pdesc;
1429         u8 idx;
1430         u8 hw_queue = _rtl_mac_to_hwqueue(hw, skb);
1431         unsigned long flags;
1432         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
1433         __le16 fc = rtl_get_fc(skb);
1434         u8 *pda_addr = hdr->addr1;
1435         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1436         /*ssn */
1437         u8 tid = 0;
1438         u16 seq_number = 0;
1439         u8 own;
1440         u8 temp_one = 1;
1441
1442         if (ieee80211_is_mgmt(fc))
1443                 rtl_tx_mgmt_proc(hw, skb);
1444
1445         if (rtlpriv->psc.sw_ps_enabled) {
1446                 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
1447                         !ieee80211_has_pm(fc))
1448                         hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1449         }
1450
1451         rtl_action_proc(hw, skb, true);
1452
1453         if (is_multicast_ether_addr(pda_addr))
1454                 rtlpriv->stats.txbytesmulticast += skb->len;
1455         else if (is_broadcast_ether_addr(pda_addr))
1456                 rtlpriv->stats.txbytesbroadcast += skb->len;
1457         else
1458                 rtlpriv->stats.txbytesunicast += skb->len;
1459
1460         spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
1461         ring = &rtlpci->tx_ring[hw_queue];
1462         if (hw_queue != BEACON_QUEUE)
1463                 idx = (ring->idx + skb_queue_len(&ring->queue)) %
1464                                 ring->entries;
1465         else
1466                 idx = 0;
1467
1468         pdesc = &ring->desc[idx];
1469         own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) pdesc,
1470                         true, HW_DESC_OWN);
1471
1472         if ((own == 1) && (hw_queue != BEACON_QUEUE)) {
1473                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
1474                          "No more TX desc@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%d\n",
1475                          hw_queue, ring->idx, idx,
1476                          skb_queue_len(&ring->queue));
1477
1478                 spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1479                 return skb->len;
1480         }
1481
1482         if (ieee80211_is_data_qos(fc)) {
1483                 tid = rtl_get_tid(skb);
1484                 if (sta) {
1485                         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1486                         seq_number = (le16_to_cpu(hdr->seq_ctrl) &
1487                                       IEEE80211_SCTL_SEQ) >> 4;
1488                         seq_number += 1;
1489
1490                         if (!ieee80211_has_morefrags(hdr->frame_control))
1491                                 sta_entry->tids[tid].seq_number = seq_number;
1492                 }
1493         }
1494
1495         if (ieee80211_is_data(fc))
1496                 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
1497
1498         rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc,
1499                         info, sta, skb, hw_queue, ptcb_desc);
1500
1501         __skb_queue_tail(&ring->queue, skb);
1502
1503         rtlpriv->cfg->ops->set_desc((u8 *)pdesc, true,
1504                                     HW_DESC_OWN, &temp_one);
1505
1506
1507         if ((ring->entries - skb_queue_len(&ring->queue)) < 2 &&
1508             hw_queue != BEACON_QUEUE) {
1509
1510                 RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
1511                          "less desc left, stop skb_queue@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%d\n",
1512                          hw_queue, ring->idx, idx,
1513                          skb_queue_len(&ring->queue));
1514
1515                 ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
1516         }
1517
1518         spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
1519
1520         rtlpriv->cfg->ops->tx_polling(hw, hw_queue);
1521
1522         return 0;
1523 }
1524
1525 static void rtl_pci_flush(struct ieee80211_hw *hw, bool drop)
1526 {
1527         struct rtl_priv *rtlpriv = rtl_priv(hw);
1528         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
1529         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1530         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1531         u16 i = 0;
1532         int queue_id;
1533         struct rtl8192_tx_ring *ring;
1534
1535         if (mac->skip_scan)
1536                 return;
1537
1538         for (queue_id = RTL_PCI_MAX_TX_QUEUE_COUNT - 1; queue_id >= 0;) {
1539                 u32 queue_len;
1540                 ring = &pcipriv->dev.tx_ring[queue_id];
1541                 queue_len = skb_queue_len(&ring->queue);
1542                 if (queue_len == 0 || queue_id == BEACON_QUEUE ||
1543                         queue_id == TXCMD_QUEUE) {
1544                         queue_id--;
1545                         continue;
1546                 } else {
1547                         msleep(20);
1548                         i++;
1549                 }
1550
1551                 /* we just wait 1s for all queues */
1552                 if (rtlpriv->psc.rfpwr_state == ERFOFF ||
1553                         is_hal_stop(rtlhal) || i >= 200)
1554                         return;
1555         }
1556 }
1557
1558 static void rtl_pci_deinit(struct ieee80211_hw *hw)
1559 {
1560         struct rtl_priv *rtlpriv = rtl_priv(hw);
1561         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1562
1563         _rtl_pci_deinit_trx_ring(hw);
1564
1565         synchronize_irq(rtlpci->pdev->irq);
1566         tasklet_kill(&rtlpriv->works.irq_tasklet);
1567         cancel_work_sync(&rtlpriv->works.lps_change_work);
1568
1569         flush_workqueue(rtlpriv->works.rtl_wq);
1570         destroy_workqueue(rtlpriv->works.rtl_wq);
1571
1572 }
1573
1574 static int rtl_pci_init(struct ieee80211_hw *hw, struct pci_dev *pdev)
1575 {
1576         struct rtl_priv *rtlpriv = rtl_priv(hw);
1577         int err;
1578
1579         _rtl_pci_init_struct(hw, pdev);
1580
1581         err = _rtl_pci_init_trx_ring(hw);
1582         if (err) {
1583                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1584                          "tx ring initialization failed\n");
1585                 return err;
1586         }
1587
1588         return 0;
1589 }
1590
1591 static int rtl_pci_start(struct ieee80211_hw *hw)
1592 {
1593         struct rtl_priv *rtlpriv = rtl_priv(hw);
1594         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1595         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1596         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1597
1598         int err;
1599
1600         rtl_pci_reset_trx_ring(hw);
1601
1602         rtlpci->driver_is_goingto_unload = false;
1603         err = rtlpriv->cfg->ops->hw_init(hw);
1604         if (err) {
1605                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1606                          "Failed to config hardware!\n");
1607                 return err;
1608         }
1609
1610         rtlpriv->cfg->ops->enable_interrupt(hw);
1611         RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, "enable_interrupt OK\n");
1612
1613         rtl_init_rx_config(hw);
1614
1615         /*should be after adapter start and interrupt enable. */
1616         set_hal_start(rtlhal);
1617
1618         RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
1619
1620         rtlpci->up_first_time = false;
1621
1622         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "OK\n");
1623         return 0;
1624 }
1625
1626 static void rtl_pci_stop(struct ieee80211_hw *hw)
1627 {
1628         struct rtl_priv *rtlpriv = rtl_priv(hw);
1629         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1630         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1631         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1632         unsigned long flags;
1633         u8 RFInProgressTimeOut = 0;
1634
1635         /*
1636          *should be before disable interrupt&adapter
1637          *and will do it immediately.
1638          */
1639         set_hal_stop(rtlhal);
1640
1641         rtlpci->driver_is_goingto_unload = true;
1642         rtlpriv->cfg->ops->disable_interrupt(hw);
1643         cancel_work_sync(&rtlpriv->works.lps_change_work);
1644
1645         spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1646         while (ppsc->rfchange_inprogress) {
1647                 spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1648                 if (RFInProgressTimeOut > 100) {
1649                         spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1650                         break;
1651                 }
1652                 mdelay(1);
1653                 RFInProgressTimeOut++;
1654                 spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1655         }
1656         ppsc->rfchange_inprogress = true;
1657         spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1658
1659         rtlpriv->cfg->ops->hw_disable(hw);
1660         /* some things are not needed if firmware not available */
1661         if (!rtlpriv->max_fw_size)
1662                 return;
1663         rtlpriv->cfg->ops->led_control(hw, LED_CTL_POWER_OFF);
1664
1665         spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
1666         ppsc->rfchange_inprogress = false;
1667         spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
1668
1669         rtl_pci_enable_aspm(hw);
1670 }
1671
1672 static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
1673                 struct ieee80211_hw *hw)
1674 {
1675         struct rtl_priv *rtlpriv = rtl_priv(hw);
1676         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
1677         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1678         struct pci_dev *bridge_pdev = pdev->bus->self;
1679         u16 venderid;
1680         u16 deviceid;
1681         u8 revisionid;
1682         u16 irqline;
1683         u8 tmp;
1684
1685         pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN;
1686         venderid = pdev->vendor;
1687         deviceid = pdev->device;
1688         pci_read_config_byte(pdev, 0x8, &revisionid);
1689         pci_read_config_word(pdev, 0x3C, &irqline);
1690
1691         /* PCI ID 0x10ec:0x8192 occurs for both RTL8192E, which uses
1692          * r8192e_pci, and RTL8192SE, which uses this driver. If the
1693          * revision ID is RTL_PCI_REVISION_ID_8192PCIE (0x01), then
1694          * the correct driver is r8192e_pci, thus this routine should
1695          * return false.
1696          */
1697         if (deviceid == RTL_PCI_8192SE_DID &&
1698             revisionid == RTL_PCI_REVISION_ID_8192PCIE)
1699                 return false;
1700
1701         if (deviceid == RTL_PCI_8192_DID ||
1702             deviceid == RTL_PCI_0044_DID ||
1703             deviceid == RTL_PCI_0047_DID ||
1704             deviceid == RTL_PCI_8192SE_DID ||
1705             deviceid == RTL_PCI_8174_DID ||
1706             deviceid == RTL_PCI_8173_DID ||
1707             deviceid == RTL_PCI_8172_DID ||
1708             deviceid == RTL_PCI_8171_DID) {
1709                 switch (revisionid) {
1710                 case RTL_PCI_REVISION_ID_8192PCIE:
1711                         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1712                                  "8192 PCI-E is found - vid/did=%x/%x\n",
1713                                  venderid, deviceid);
1714                         rtlhal->hw_type = HARDWARE_TYPE_RTL8192E;
1715                         return false;
1716                 case RTL_PCI_REVISION_ID_8192SE:
1717                         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1718                                  "8192SE is found - vid/did=%x/%x\n",
1719                                  venderid, deviceid);
1720                         rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
1721                         break;
1722                 default:
1723                         RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
1724                                  "Err: Unknown device - vid/did=%x/%x\n",
1725                                  venderid, deviceid);
1726                         rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
1727                         break;
1728
1729                 }
1730         } else if (deviceid == RTL_PCI_8723AE_DID) {
1731                 rtlhal->hw_type = HARDWARE_TYPE_RTL8723AE;
1732                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1733                          "8723AE PCI-E is found - "
1734                          "vid/did=%x/%x\n", venderid, deviceid);
1735         } else if (deviceid == RTL_PCI_8192CET_DID ||
1736                    deviceid == RTL_PCI_8192CE_DID ||
1737                    deviceid == RTL_PCI_8191CE_DID ||
1738                    deviceid == RTL_PCI_8188CE_DID) {
1739                 rtlhal->hw_type = HARDWARE_TYPE_RTL8192CE;
1740                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1741                          "8192C PCI-E is found - vid/did=%x/%x\n",
1742                          venderid, deviceid);
1743         } else if (deviceid == RTL_PCI_8192DE_DID ||
1744                    deviceid == RTL_PCI_8192DE_DID2) {
1745                 rtlhal->hw_type = HARDWARE_TYPE_RTL8192DE;
1746                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1747                          "8192D PCI-E is found - vid/did=%x/%x\n",
1748                          venderid, deviceid);
1749         } else if (deviceid == RTL_PCI_8188EE_DID) {
1750                 rtlhal->hw_type = HARDWARE_TYPE_RTL8188EE;
1751                 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
1752                          "Find adapter, Hardware type is 8188EE\n");
1753         } else {
1754                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
1755                          "Err: Unknown device - vid/did=%x/%x\n",
1756                          venderid, deviceid);
1757
1758                 rtlhal->hw_type = RTL_DEFAULT_HARDWARE_TYPE;
1759         }
1760
1761         if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192DE) {
1762                 if (revisionid == 0 || revisionid == 1) {
1763                         if (revisionid == 0) {
1764                                 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
1765                                          "Find 92DE MAC0\n");
1766                                 rtlhal->interfaceindex = 0;
1767                         } else if (revisionid == 1) {
1768                                 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
1769                                          "Find 92DE MAC1\n");
1770                                 rtlhal->interfaceindex = 1;
1771                         }
1772                 } else {
1773                         RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
1774                                  "Unknown device - VendorID/DeviceID=%x/%x, Revision=%x\n",
1775                                  venderid, deviceid, revisionid);
1776                         rtlhal->interfaceindex = 0;
1777                 }
1778         }
1779         /*find bus info */
1780         pcipriv->ndis_adapter.busnumber = pdev->bus->number;
1781         pcipriv->ndis_adapter.devnumber = PCI_SLOT(pdev->devfn);
1782         pcipriv->ndis_adapter.funcnumber = PCI_FUNC(pdev->devfn);
1783
1784         /* some ARM have no bridge_pdev and will crash here
1785          * so we should check if bridge_pdev is NULL
1786          */
1787         if (bridge_pdev) {
1788                 /*find bridge info if available */
1789                 pcipriv->ndis_adapter.pcibridge_vendorid = bridge_pdev->vendor;
1790                 for (tmp = 0; tmp < PCI_BRIDGE_VENDOR_MAX; tmp++) {
1791                         if (bridge_pdev->vendor == pcibridge_vendors[tmp]) {
1792                                 pcipriv->ndis_adapter.pcibridge_vendor = tmp;
1793                                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1794                                          "Pci Bridge Vendor is found index: %d\n",
1795                                          tmp);
1796                                 break;
1797                         }
1798                 }
1799         }
1800
1801         if (pcipriv->ndis_adapter.pcibridge_vendor !=
1802                 PCI_BRIDGE_VENDOR_UNKNOWN) {
1803                 pcipriv->ndis_adapter.pcibridge_busnum =
1804                     bridge_pdev->bus->number;
1805                 pcipriv->ndis_adapter.pcibridge_devnum =
1806                     PCI_SLOT(bridge_pdev->devfn);
1807                 pcipriv->ndis_adapter.pcibridge_funcnum =
1808                     PCI_FUNC(bridge_pdev->devfn);
1809                 pcipriv->ndis_adapter.pcibridge_pciehdr_offset =
1810                     pci_pcie_cap(bridge_pdev);
1811                 pcipriv->ndis_adapter.num4bytes =
1812                     (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10) / 4;
1813
1814                 rtl_pci_get_linkcontrol_field(hw);
1815
1816                 if (pcipriv->ndis_adapter.pcibridge_vendor ==
1817                     PCI_BRIDGE_VENDOR_AMD) {
1818                         pcipriv->ndis_adapter.amd_l1_patch =
1819                             rtl_pci_get_amd_l1_patch(hw);
1820                 }
1821         }
1822
1823         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1824                  "pcidev busnumber:devnumber:funcnumber:vendor:link_ctl %d:%d:%d:%x:%x\n",
1825                  pcipriv->ndis_adapter.busnumber,
1826                  pcipriv->ndis_adapter.devnumber,
1827                  pcipriv->ndis_adapter.funcnumber,
1828                  pdev->vendor, pcipriv->ndis_adapter.linkctrl_reg);
1829
1830         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1831                  "pci_bridge busnumber:devnumber:funcnumber:vendor:pcie_cap:link_ctl_reg:amd %d:%d:%d:%x:%x:%x:%x\n",
1832                  pcipriv->ndis_adapter.pcibridge_busnum,
1833                  pcipriv->ndis_adapter.pcibridge_devnum,
1834                  pcipriv->ndis_adapter.pcibridge_funcnum,
1835                  pcibridge_vendors[pcipriv->ndis_adapter.pcibridge_vendor],
1836                  pcipriv->ndis_adapter.pcibridge_pciehdr_offset,
1837                  pcipriv->ndis_adapter.pcibridge_linkctrlreg,
1838                  pcipriv->ndis_adapter.amd_l1_patch);
1839
1840         rtl_pci_parse_configuration(pdev, hw);
1841         list_add_tail(&rtlpriv->list, &rtlpriv->glb_var->glb_priv_list);
1842
1843         return true;
1844 }
1845
1846 int rtl_pci_probe(struct pci_dev *pdev,
1847                             const struct pci_device_id *id)
1848 {
1849         struct ieee80211_hw *hw = NULL;
1850
1851         struct rtl_priv *rtlpriv = NULL;
1852         struct rtl_pci_priv *pcipriv = NULL;
1853         struct rtl_pci *rtlpci;
1854         unsigned long pmem_start, pmem_len, pmem_flags;
1855         int err;
1856
1857         err = pci_enable_device(pdev);
1858         if (err) {
1859                 RT_ASSERT(false, "%s : Cannot enable new PCI device\n",
1860                           pci_name(pdev));
1861                 return err;
1862         }
1863
1864         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
1865                 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1866                         RT_ASSERT(false,
1867                                   "Unable to obtain 32bit DMA for consistent allocations\n");
1868                         err = -ENOMEM;
1869                         goto fail1;
1870                 }
1871         }
1872
1873         pci_set_master(pdev);
1874
1875         hw = ieee80211_alloc_hw(sizeof(struct rtl_pci_priv) +
1876                                 sizeof(struct rtl_priv), &rtl_ops);
1877         if (!hw) {
1878                 RT_ASSERT(false,
1879                           "%s : ieee80211 alloc failed\n", pci_name(pdev));
1880                 err = -ENOMEM;
1881                 goto fail1;
1882         }
1883
1884         SET_IEEE80211_DEV(hw, &pdev->dev);
1885         pci_set_drvdata(pdev, hw);
1886
1887         rtlpriv = hw->priv;
1888         rtlpriv->hw = hw;
1889         pcipriv = (void *)rtlpriv->priv;
1890         pcipriv->dev.pdev = pdev;
1891         init_completion(&rtlpriv->firmware_loading_complete);
1892
1893         /* init cfg & intf_ops */
1894         rtlpriv->rtlhal.interface = INTF_PCI;
1895         rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_data);
1896         rtlpriv->intf_ops = &rtl_pci_ops;
1897         rtlpriv->glb_var = &rtl_global_var;
1898
1899         /*
1900          *init dbgp flags before all
1901          *other functions, because we will
1902          *use it in other funtions like
1903          *RT_TRACE/RT_PRINT/RTL_PRINT_DATA
1904          *you can not use these macro
1905          *before this
1906          */
1907         rtl_dbgp_flag_init(hw);
1908
1909         /* MEM map */
1910         err = pci_request_regions(pdev, KBUILD_MODNAME);
1911         if (err) {
1912                 RT_ASSERT(false, "Can't obtain PCI resources\n");
1913                 goto fail1;
1914         }
1915
1916         pmem_start = pci_resource_start(pdev, rtlpriv->cfg->bar_id);
1917         pmem_len = pci_resource_len(pdev, rtlpriv->cfg->bar_id);
1918         pmem_flags = pci_resource_flags(pdev, rtlpriv->cfg->bar_id);
1919
1920         /*shared mem start */
1921         rtlpriv->io.pci_mem_start =
1922                         (unsigned long)pci_iomap(pdev,
1923                         rtlpriv->cfg->bar_id, pmem_len);
1924         if (rtlpriv->io.pci_mem_start == 0) {
1925                 RT_ASSERT(false, "Can't map PCI mem\n");
1926                 err = -ENOMEM;
1927                 goto fail2;
1928         }
1929
1930         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1931                  "mem mapped space: start: 0x%08lx len:%08lx flags:%08lx, after map:0x%08lx\n",
1932                  pmem_start, pmem_len, pmem_flags,
1933                  rtlpriv->io.pci_mem_start);
1934
1935         /* Disable Clk Request */
1936         pci_write_config_byte(pdev, 0x81, 0);
1937         /* leave D3 mode */
1938         pci_write_config_byte(pdev, 0x44, 0);
1939         pci_write_config_byte(pdev, 0x04, 0x06);
1940         pci_write_config_byte(pdev, 0x04, 0x07);
1941
1942         /* find adapter */
1943         if (!_rtl_pci_find_adapter(pdev, hw)) {
1944                 err = -ENODEV;
1945                 goto fail3;
1946         }
1947
1948         /* Init IO handler */
1949         _rtl_pci_io_handler_init(&pdev->dev, hw);
1950
1951         /*like read eeprom and so on */
1952         rtlpriv->cfg->ops->read_eeprom_info(hw);
1953
1954         /*aspm */
1955         rtl_pci_init_aspm(hw);
1956
1957         /* Init mac80211 sw */
1958         err = rtl_init_core(hw);
1959         if (err) {
1960                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1961                          "Can't allocate sw for mac80211\n");
1962                 goto fail3;
1963         }
1964
1965         /* Init PCI sw */
1966         err = rtl_pci_init(hw, pdev);
1967         if (err) {
1968                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Failed to init PCI\n");
1969                 goto fail3;
1970         }
1971
1972         if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
1973                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
1974                 err = -ENODEV;
1975                 goto fail3;
1976         }
1977
1978         rtlpriv->cfg->ops->init_sw_leds(hw);
1979
1980         err = sysfs_create_group(&pdev->dev.kobj, &rtl_attribute_group);
1981         if (err) {
1982                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1983                          "failed to create sysfs device attributes\n");
1984                 goto fail3;
1985         }
1986
1987         rtlpci = rtl_pcidev(pcipriv);
1988         err = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt,
1989                           IRQF_SHARED, KBUILD_MODNAME, hw);
1990         if (err) {
1991                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
1992                          "%s: failed to register IRQ handler\n",
1993                          wiphy_name(hw->wiphy));
1994                 goto fail3;
1995         }
1996         rtlpci->irq_alloc = 1;
1997
1998         return 0;
1999
2000 fail3:
2001         rtl_deinit_core(hw);
2002
2003         if (rtlpriv->io.pci_mem_start != 0)
2004                 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
2005
2006 fail2:
2007         pci_release_regions(pdev);
2008         complete(&rtlpriv->firmware_loading_complete);
2009
2010 fail1:
2011         if (hw)
2012                 ieee80211_free_hw(hw);
2013         pci_disable_device(pdev);
2014
2015         return err;
2016
2017 }
2018 EXPORT_SYMBOL(rtl_pci_probe);
2019
2020 void rtl_pci_disconnect(struct pci_dev *pdev)
2021 {
2022         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2023         struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
2024         struct rtl_priv *rtlpriv = rtl_priv(hw);
2025         struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
2026         struct rtl_mac *rtlmac = rtl_mac(rtlpriv);
2027
2028         /* just in case driver is removed before firmware callback */
2029         wait_for_completion(&rtlpriv->firmware_loading_complete);
2030         clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
2031
2032         sysfs_remove_group(&pdev->dev.kobj, &rtl_attribute_group);
2033
2034         /*ieee80211_unregister_hw will call ops_stop */
2035         if (rtlmac->mac80211_registered == 1) {
2036                 ieee80211_unregister_hw(hw);
2037                 rtlmac->mac80211_registered = 0;
2038         } else {
2039                 rtl_deinit_deferred_work(hw);
2040                 rtlpriv->intf_ops->adapter_stop(hw);
2041         }
2042         rtlpriv->cfg->ops->disable_interrupt(hw);
2043
2044         /*deinit rfkill */
2045         rtl_deinit_rfkill(hw);
2046
2047         rtl_pci_deinit(hw);
2048         rtl_deinit_core(hw);
2049         rtlpriv->cfg->ops->deinit_sw_vars(hw);
2050
2051         if (rtlpci->irq_alloc) {
2052                 synchronize_irq(rtlpci->pdev->irq);
2053                 free_irq(rtlpci->pdev->irq, hw);
2054                 rtlpci->irq_alloc = 0;
2055         }
2056
2057         list_del(&rtlpriv->list);
2058         if (rtlpriv->io.pci_mem_start != 0) {
2059                 pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
2060                 pci_release_regions(pdev);
2061         }
2062
2063         pci_disable_device(pdev);
2064
2065         rtl_pci_disable_aspm(hw);
2066
2067         ieee80211_free_hw(hw);
2068 }
2069 EXPORT_SYMBOL(rtl_pci_disconnect);
2070
2071 #ifdef CONFIG_PM_SLEEP
2072 /***************************************
2073 kernel pci power state define:
2074 PCI_D0         ((pci_power_t __force) 0)
2075 PCI_D1         ((pci_power_t __force) 1)
2076 PCI_D2         ((pci_power_t __force) 2)
2077 PCI_D3hot      ((pci_power_t __force) 3)
2078 PCI_D3cold     ((pci_power_t __force) 4)
2079 PCI_UNKNOWN    ((pci_power_t __force) 5)
2080
2081 This function is called when system
2082 goes into suspend state mac80211 will
2083 call rtl_mac_stop() from the mac80211
2084 suspend function first, So there is
2085 no need to call hw_disable here.
2086 ****************************************/
2087 int rtl_pci_suspend(struct device *dev)
2088 {
2089         struct pci_dev *pdev = to_pci_dev(dev);
2090         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2091         struct rtl_priv *rtlpriv = rtl_priv(hw);
2092
2093         rtlpriv->cfg->ops->hw_suspend(hw);
2094         rtl_deinit_rfkill(hw);
2095
2096         return 0;
2097 }
2098 EXPORT_SYMBOL(rtl_pci_suspend);
2099
2100 int rtl_pci_resume(struct device *dev)
2101 {
2102         struct pci_dev *pdev = to_pci_dev(dev);
2103         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2104         struct rtl_priv *rtlpriv = rtl_priv(hw);
2105
2106         rtlpriv->cfg->ops->hw_resume(hw);
2107         rtl_init_rfkill(hw);
2108         return 0;
2109 }
2110 EXPORT_SYMBOL(rtl_pci_resume);
2111 #endif /* CONFIG_PM_SLEEP */
2112
2113 struct rtl_intf_ops rtl_pci_ops = {
2114         .read_efuse_byte = read_efuse_byte,
2115         .adapter_start = rtl_pci_start,
2116         .adapter_stop = rtl_pci_stop,
2117         .check_buddy_priv = rtl_pci_check_buddy_priv,
2118         .adapter_tx = rtl_pci_tx,
2119         .flush = rtl_pci_flush,
2120         .reset_trx_ring = rtl_pci_reset_trx_ring,
2121         .waitq_insert = rtl_pci_tx_chk_waitq_insert,
2122
2123         .disable_aspm = rtl_pci_disable_aspm,
2124         .enable_aspm = rtl_pci_enable_aspm,
2125 };