drivers/net/wireless/rtlwifi/rtl8192cu/mac.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2010  Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * 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 #include <linux/module.h>
  30
  31 #include "../wifi.h"
  32 #include "../pci.h"
  33 #include "../usb.h"
  34 #include "../ps.h"
  35 #include "../cam.h"
  36 #include "reg.h"
  37 #include "def.h"
  38 #include "phy.h"
  39 #include "rf.h"
  40 #include "dm.h"
  41 #include "mac.h"
  42 #include "trx.h"
  43
  44 /* macro to shorten lines */
  45
  46 #define LINK_Q  ui_link_quality
  47 #define RX_EVM  rx_evm_percentage
  48 #define RX_SIGQ rx_mimo_signalquality
  49
  50
  51 void rtl92c_read_chip_version(struct ieee80211_hw *hw)
  52 {
  53         struct rtl_priv *rtlpriv = rtl_priv(hw);
  54         struct rtl_phy *rtlphy = &(rtlpriv->phy);
  55         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
  56         enum version_8192c chip_version = VERSION_UNKNOWN;
  57         u32 value32;
  58
  59         value32 = rtl_read_dword(rtlpriv, REG_SYS_CFG);
  60         if (value32 & TRP_VAUX_EN) {
  61                 chip_version = (value32 & TYPE_ID) ? VERSION_TEST_CHIP_92C :
  62                                VERSION_TEST_CHIP_88C;
  63         } else {
  64                 /* Normal mass production chip. */
  65                 chip_version = NORMAL_CHIP;
  66                 chip_version |= ((value32 & TYPE_ID) ? CHIP_92C : 0);
  67                 chip_version |= ((value32 & VENDOR_ID) ? CHIP_VENDOR_UMC : 0);
  68                 /* RTL8723 with BT function. */
  69                 chip_version |= ((value32 & BT_FUNC) ? CHIP_8723 : 0);
  70                 if (IS_VENDOR_UMC(chip_version))
  71                         chip_version |= ((value32 & CHIP_VER_RTL_MASK) ?
  72                                          CHIP_VENDOR_UMC_B_CUT : 0);
  73                 if (IS_92C_SERIAL(chip_version)) {
  74                         value32 = rtl_read_dword(rtlpriv, REG_HPON_FSM);
  75                         chip_version |= ((CHIP_BONDING_IDENTIFIER(value32) ==
  76                                  CHIP_BONDING_92C_1T2R) ? CHIP_92C_1T2R : 0);
  77                 } else if (IS_8723_SERIES(chip_version)) {
  78                         value32 = rtl_read_dword(rtlpriv, REG_GPIO_OUTSTS);
  79                         chip_version |= ((value32 & RF_RL_ID) ?
  80                                           CHIP_8723_DRV_REV : 0);
  81                 }
  82         }
  83         rtlhal->version  = (enum version_8192c)chip_version;
  84         switch (rtlhal->version) {
  85         case VERSION_NORMAL_TSMC_CHIP_92C_1T2R:
  86                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
  87                  ("Chip Version ID: VERSION_B_CHIP_92C.\n"));
  88                 break;
  89         case VERSION_NORMAL_TSMC_CHIP_92C:
  90                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
  91                         ("Chip Version ID: VERSION_NORMAL_TSMC_CHIP_92C.\n"));
  92                 break;
  93         case VERSION_NORMAL_TSMC_CHIP_88C:
  94                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
  95                         ("Chip Version ID: VERSION_NORMAL_TSMC_CHIP_88C.\n"));
  96                 break;
  97         case VERSION_NORMAL_UMC_CHIP_92C_1T2R_A_CUT:
  98                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
  99                         ("Chip Version ID: VERSION_NORMAL_UMC_CHIP_i"
 100                         "92C_1T2R_A_CUT.\n"));
 101                 break;
 102         case VERSION_NORMAL_UMC_CHIP_92C_A_CUT:
 103                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 104                         ("Chip Version ID: VERSION_NORMAL_UMC_CHIP_"
 105                         "92C_A_CUT.\n"));
 106                 break;
 107         case VERSION_NORMAL_UMC_CHIP_88C_A_CUT:
 108                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 109                         ("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
 110                         "_88C_A_CUT.\n"));
 111                 break;
 112         case VERSION_NORMAL_UMC_CHIP_92C_1T2R_B_CUT:
 113                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 114                         ("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
 115                         "_92C_1T2R_B_CUT.\n"));
 116                 break;
 117         case VERSION_NORMAL_UMC_CHIP_92C_B_CUT:
 118                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 119                         ("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
 120                         "_92C_B_CUT.\n"));
 121                 break;
 122         case VERSION_NORMAL_UMC_CHIP_88C_B_CUT:
 123                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 124                         ("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
 125                         "_88C_B_CUT.\n"));
 126                 break;
 127         case VERSION_NORMA_UMC_CHIP_8723_1T1R_A_CUT:
 128                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 129                         ("Chip Version ID: VERSION_NORMA_UMC_CHIP"
 130                         "_8723_1T1R_A_CUT.\n"));
 131                 break;
 132         case VERSION_NORMA_UMC_CHIP_8723_1T1R_B_CUT:
 133                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 134                         ("Chip Version ID: VERSION_NORMA_UMC_CHIP"
 135                         "_8723_1T1R_B_CUT.\n"));
 136                 break;
 137         case VERSION_TEST_CHIP_92C:
 138                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 139                         ("Chip Version ID: VERSION_TEST_CHIP_92C.\n"));
 140                 break;
 141         case VERSION_TEST_CHIP_88C:
 142                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 143                         ("Chip Version ID: VERSION_TEST_CHIP_88C.\n"));
 144                 break;
 145         default:
 146                 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 147                         ("Chip Version ID: ???????????????.\n"));
 148                 break;
 149         }
 150         if (IS_92C_SERIAL(rtlhal->version))
 151                 rtlphy->rf_type =
 152                          (IS_92C_1T2R(rtlhal->version)) ? RF_1T2R : RF_2T2R;
 153         else
 154                 rtlphy->rf_type = RF_1T1R;
 155         RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
 156                  ("Chip RF Type: %s\n", (rtlphy->rf_type == RF_2T2R) ?
 157                   "RF_2T2R" : "RF_1T1R"));
 158         if (get_rf_type(rtlphy) == RF_1T1R)
 159                 rtlpriv->dm.rfpath_rxenable[0] = true;
 160         else
 161                 rtlpriv->dm.rfpath_rxenable[0] =
 162                     rtlpriv->dm.rfpath_rxenable[1] = true;
 163         RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, ("VersionID = 0x%4x\n",
 164                                                 rtlhal->version));
 165 }
 166
 167 /**
 168  * writeLLT - LLT table write access
 169  * @io: io callback
 170  * @address: LLT logical address.
 171  * @data: LLT data content
 172  *
 173  * Realtek hardware access function.
 174  *
 175  */
 176 bool rtl92c_llt_write(struct ieee80211_hw *hw, u32 address, u32 data)
 177 {
 178         struct rtl_priv *rtlpriv = rtl_priv(hw);
 179         bool status = true;
 180         long count = 0;
 181         u32 value = _LLT_INIT_ADDR(address) |
 182             _LLT_INIT_DATA(data) | _LLT_OP(_LLT_WRITE_ACCESS);
 183
 184         rtl_write_dword(rtlpriv, REG_LLT_INIT, value);
 185         do {
 186                 value = rtl_read_dword(rtlpriv, REG_LLT_INIT);
 187                 if (_LLT_NO_ACTIVE == _LLT_OP_VALUE(value))
 188                         break;
 189                 if (count > POLLING_LLT_THRESHOLD) {
 190                         RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 191                                  ("Failed to polling write LLT done at"
 192                                  " address %d! _LLT_OP_VALUE(%x)\n",
 193                                  address, _LLT_OP_VALUE(value)));
 194                         status = false;
 195                         break;
 196                 }
 197         } while (++count);
 198         return status;
 199 }
 200 /**
 201  * rtl92c_init_LLT_table - Init LLT table
 202  * @io: io callback
 203  * @boundary:
 204  *
 205  * Realtek hardware access function.
 206  *
 207  */
 208 bool rtl92c_init_llt_table(struct ieee80211_hw *hw, u32 boundary)
 209 {
 210         bool rst = true;
 211         u32     i;
 212
 213         for (i = 0; i < (boundary - 1); i++) {
 214                 rst = rtl92c_llt_write(hw, i , i + 1);
 215                 if (true != rst) {
 216                         printk(KERN_ERR "===> %s #1 fail\n", __func__);
 217                         return rst;
 218                 }
 219         }
 220         /* end of list */
 221         rst = rtl92c_llt_write(hw, (boundary - 1), 0xFF);
 222         if (true != rst) {
 223                 printk(KERN_ERR "===> %s #2 fail\n", __func__);
 224                 return rst;
 225         }
 226         /* Make the other pages as ring buffer
 227          * This ring buffer is used as beacon buffer if we config this MAC
 228          *  as two MAC transfer.
 229          * Otherwise used as local loopback buffer.
 230          */
 231         for (i = boundary; i < LLT_LAST_ENTRY_OF_TX_PKT_BUFFER; i++) {
 232                 rst = rtl92c_llt_write(hw, i, (i + 1));
 233                 if (true != rst) {
 234                         printk(KERN_ERR "===> %s #3 fail\n", __func__);
 235                         return rst;
 236                 }
 237         }
 238         /* Let last entry point to the start entry of ring buffer */
 239         rst = rtl92c_llt_write(hw, LLT_LAST_ENTRY_OF_TX_PKT_BUFFER, boundary);
 240         if (true != rst) {
 241                 printk(KERN_ERR "===> %s #4 fail\n", __func__);
 242                 return rst;
 243         }
 244         return rst;
 245 }
 246 void rtl92c_set_key(struct ieee80211_hw *hw, u32 key_index,
 247                      u8 *p_macaddr, bool is_group, u8 enc_algo,
 248                      bool is_wepkey, bool clear_all)
 249 {
 250         struct rtl_priv *rtlpriv = rtl_priv(hw);
 251         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 252         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 253         u8 *macaddr = p_macaddr;
 254         u32 entry_id = 0;
 255         bool is_pairwise = false;
 256         static u8 cam_const_addr[4][6] = {
 257                 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
 258                 {0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
 259                 {0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
 260                 {0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
 261         };
 262         static u8 cam_const_broad[] = {
 263                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
 264         };
 265
 266         if (clear_all) {
 267                 u8 idx = 0;
 268                 u8 cam_offset = 0;
 269                 u8 clear_number = 5;
 270
 271                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("clear_all\n"));
 272                 for (idx = 0; idx < clear_number; idx++) {
 273                         rtl_cam_mark_invalid(hw, cam_offset + idx);
 274                         rtl_cam_empty_entry(hw, cam_offset + idx);
 275                         if (idx < 5) {
 276                                 memset(rtlpriv->sec.key_buf[idx], 0,
 277                                        MAX_KEY_LEN);
 278                                 rtlpriv->sec.key_len[idx] = 0;
 279                         }
 280                 }
 281         } else {
 282                 switch (enc_algo) {
 283                 case WEP40_ENCRYPTION:
 284                         enc_algo = CAM_WEP40;
 285                         break;
 286                 case WEP104_ENCRYPTION:
 287                         enc_algo = CAM_WEP104;
 288                         break;
 289                 case TKIP_ENCRYPTION:
 290                         enc_algo = CAM_TKIP;
 291                         break;
 292                 case AESCCMP_ENCRYPTION:
 293                         enc_algo = CAM_AES;
 294                         break;
 295                 default:
 296                         RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 297                                 ("iillegal switch case\n"));
 298                         enc_algo = CAM_TKIP;
 299                         break;
 300                 }
 301                 if (is_wepkey || rtlpriv->sec.use_defaultkey) {
 302                         macaddr = cam_const_addr[key_index];
 303                         entry_id = key_index;
 304                 } else {
 305                         if (is_group) {
 306                                 macaddr = cam_const_broad;
 307                                 entry_id = key_index;
 308                         } else {
 309                                 key_index = PAIRWISE_KEYIDX;
 310                                 entry_id = CAM_PAIRWISE_KEY_POSITION;
 311                                 is_pairwise = true;
 312                         }
 313                 }
 314                 if (rtlpriv->sec.key_len[key_index] == 0) {
 315                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 316                                  ("delete one entry\n"));
 317                         rtl_cam_delete_one_entry(hw, p_macaddr, entry_id);
 318                 } else {
 319                         RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
 320                                  ("The insert KEY length is %d\n",
 321                                   rtlpriv->sec.key_len[PAIRWISE_KEYIDX]));
 322                         RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
 323                                  ("The insert KEY  is %x %x\n",
 324                                   rtlpriv->sec.key_buf[0][0],
 325                                   rtlpriv->sec.key_buf[0][1]));
 326                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 327                                  ("add one entry\n"));
 328                         if (is_pairwise) {
 329                                 RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_LOUD,
 330                                               "Pairwiase Key content :",
 331                                               rtlpriv->sec.pairwise_key,
 332                                               rtlpriv->sec.
 333                                               key_len[PAIRWISE_KEYIDX]);
 334                                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 335                                          ("set Pairwiase key\n"));
 336
 337                                 rtl_cam_add_one_entry(hw, macaddr, key_index,
 338                                                 entry_id, enc_algo,
 339                                                 CAM_CONFIG_NO_USEDK,
 340                                                 rtlpriv->sec.
 341                                                 key_buf[key_index]);
 342                         } else {
 343                                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 344                                          ("set group key\n"));
 345                                 if (mac->opmode == NL80211_IFTYPE_ADHOC) {
 346                                         rtl_cam_add_one_entry(hw,
 347                                                 rtlefuse->dev_addr,
 348                                                 PAIRWISE_KEYIDX,
 349                                                 CAM_PAIRWISE_KEY_POSITION,
 350                                                 enc_algo,
 351                                                 CAM_CONFIG_NO_USEDK,
 352                                                 rtlpriv->sec.key_buf
 353                                                 [entry_id]);
 354                                 }
 355                                 rtl_cam_add_one_entry(hw, macaddr, key_index,
 356                                                 entry_id, enc_algo,
 357                                                 CAM_CONFIG_NO_USEDK,
 358                                                 rtlpriv->sec.key_buf[entry_id]);
 359                         }
 360                 }
 361         }
 362 }
 363
 364 u32 rtl92c_get_txdma_status(struct ieee80211_hw *hw)
 365 {
 366         struct rtl_priv *rtlpriv = rtl_priv(hw);
 367
 368         return rtl_read_dword(rtlpriv, REG_TXDMA_STATUS);
 369 }
 370
 371 void rtl92c_enable_interrupt(struct ieee80211_hw *hw)
 372 {
 373         struct rtl_priv *rtlpriv = rtl_priv(hw);
 374         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 375         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 376         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 377
 378         if (IS_HARDWARE_TYPE_8192CE(rtlhal)) {
 379                 rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] &
 380                                 0xFFFFFFFF);
 381                 rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] &
 382                                 0xFFFFFFFF);
 383                 rtlpci->irq_enabled = true;
 384         } else {
 385                 rtl_write_dword(rtlpriv, REG_HIMR, rtlusb->irq_mask[0] &
 386                                 0xFFFFFFFF);
 387                 rtl_write_dword(rtlpriv, REG_HIMRE, rtlusb->irq_mask[1] &
 388                                 0xFFFFFFFF);
 389                 rtlusb->irq_enabled = true;
 390         }
 391 }
 392
 393 void rtl92c_init_interrupt(struct ieee80211_hw *hw)
 394 {
 395          rtl92c_enable_interrupt(hw);
 396 }
 397
 398 void rtl92c_disable_interrupt(struct ieee80211_hw *hw)
 399 {
 400         struct rtl_priv *rtlpriv = rtl_priv(hw);
 401         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 402         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 403         struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 404
 405         rtl_write_dword(rtlpriv, REG_HIMR, IMR8190_DISABLED);
 406         rtl_write_dword(rtlpriv, REG_HIMRE, IMR8190_DISABLED);
 407         if (IS_HARDWARE_TYPE_8192CE(rtlhal))
 408                 rtlpci->irq_enabled = false;
 409         else if (IS_HARDWARE_TYPE_8192CU(rtlhal))
 410                 rtlusb->irq_enabled = false;
 411 }
 412
 413 void rtl92c_set_qos(struct ieee80211_hw *hw, int aci)
 414 {
 415         struct rtl_priv *rtlpriv = rtl_priv(hw);
 416         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 417         u32 u4b_ac_param;
 418
 419         rtl92c_dm_init_edca_turbo(hw);
 420         u4b_ac_param = (u32) mac->ac[aci].aifs;
 421         u4b_ac_param |=
 422             ((u32) le16_to_cpu(mac->ac[aci].cw_min) & 0xF) <<
 423             AC_PARAM_ECW_MIN_OFFSET;
 424         u4b_ac_param |=
 425             ((u32) le16_to_cpu(mac->ac[aci].cw_max) & 0xF) <<
 426             AC_PARAM_ECW_MAX_OFFSET;
 427         u4b_ac_param |= (u32) le16_to_cpu(mac->ac[aci].tx_op) <<
 428                          AC_PARAM_TXOP_OFFSET;
 429         RT_TRACE(rtlpriv, COMP_QOS, DBG_LOUD,
 430                  ("queue:%x, ac_param:%x\n", aci, u4b_ac_param));
 431         switch (aci) {
 432         case AC1_BK:
 433                 rtl_write_dword(rtlpriv, REG_EDCA_BK_PARAM, u4b_ac_param);
 434                 break;
 435         case AC0_BE:
 436                 rtl_write_dword(rtlpriv, REG_EDCA_BE_PARAM, u4b_ac_param);
 437                 break;
 438         case AC2_VI:
 439                 rtl_write_dword(rtlpriv, REG_EDCA_VI_PARAM, u4b_ac_param);
 440                 break;
 441         case AC3_VO:
 442                 rtl_write_dword(rtlpriv, REG_EDCA_VO_PARAM, u4b_ac_param);
 443                 break;
 444         default:
 445                 RT_ASSERT(false, ("invalid aci: %d !\n", aci));
 446                 break;
 447         }
 448 }
 449
 450 /*-------------------------------------------------------------------------
 451  * HW MAC Address
 452  *-------------------------------------------------------------------------*/
 453 void rtl92c_set_mac_addr(struct ieee80211_hw *hw, const u8 *addr)
 454 {
 455         u32 i;
 456         struct rtl_priv *rtlpriv = rtl_priv(hw);
 457
 458         for (i = 0 ; i < ETH_ALEN ; i++)
 459                 rtl_write_byte(rtlpriv, (REG_MACID + i), *(addr+i));
 460
 461         RT_TRACE(rtlpriv, COMP_CMD, DBG_DMESG, ("MAC Address: %02X-%02X-%02X-"
 462                 "%02X-%02X-%02X\n",
 463                 rtl_read_byte(rtlpriv, REG_MACID),
 464                 rtl_read_byte(rtlpriv, REG_MACID+1),
 465                 rtl_read_byte(rtlpriv, REG_MACID+2),
 466                 rtl_read_byte(rtlpriv, REG_MACID+3),
 467                 rtl_read_byte(rtlpriv, REG_MACID+4),
 468                 rtl_read_byte(rtlpriv, REG_MACID+5)));
 469 }
 470
 471 void rtl92c_init_driver_info_size(struct ieee80211_hw *hw, u8 size)
 472 {
 473         struct rtl_priv *rtlpriv = rtl_priv(hw);
 474         rtl_write_byte(rtlpriv, REG_RX_DRVINFO_SZ, size);
 475 }
 476
 477 int rtl92c_set_network_type(struct ieee80211_hw *hw, enum nl80211_iftype type)
 478 {
 479         u8 value;
 480         struct rtl_priv *rtlpriv = rtl_priv(hw);
 481
 482         switch (type) {
 483         case NL80211_IFTYPE_UNSPECIFIED:
 484                 value = NT_NO_LINK;
 485                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 486                         ("Set Network type to NO LINK!\n"));
 487                 break;
 488         case NL80211_IFTYPE_ADHOC:
 489                 value = NT_LINK_AD_HOC;
 490                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 491                         ("Set Network type to Ad Hoc!\n"));
 492                 break;
 493         case NL80211_IFTYPE_STATION:
 494                 value = NT_LINK_AP;
 495                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 496                         ("Set Network type to STA!\n"));
 497                 break;
 498         case NL80211_IFTYPE_AP:
 499                 value = NT_AS_AP;
 500                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 501                         ("Set Network type to AP!\n"));
 502                 break;
 503         default:
 504                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 505                         ("Network type %d not support!\n", type));
 506                 return -EOPNOTSUPP;
 507         }
 508         rtl_write_byte(rtlpriv, (REG_CR + 2), value);
 509         return 0;
 510 }
 511
 512 void rtl92c_init_network_type(struct ieee80211_hw *hw)
 513 {
 514         rtl92c_set_network_type(hw, NL80211_IFTYPE_UNSPECIFIED);
 515 }
 516
 517 void rtl92c_init_adaptive_ctrl(struct ieee80211_hw *hw)
 518 {
 519         u16     value16;
 520         u32     value32;
 521         struct rtl_priv *rtlpriv = rtl_priv(hw);
 522
 523         /* Response Rate Set */
 524         value32 = rtl_read_dword(rtlpriv, REG_RRSR);
 525         value32 &= ~RATE_BITMAP_ALL;
 526         value32 |= RATE_RRSR_CCK_ONLY_1M;
 527         rtl_write_dword(rtlpriv, REG_RRSR, value32);
 528         /* SIFS (used in NAV) */
 529         value16 = _SPEC_SIFS_CCK(0x10) | _SPEC_SIFS_OFDM(0x10);
 530         rtl_write_word(rtlpriv,  REG_SPEC_SIFS, value16);
 531         /* Retry Limit */
 532         value16 = _LRL(0x30) | _SRL(0x30);
 533         rtl_write_dword(rtlpriv,  REG_RL, value16);
 534 }
 535
 536 void rtl92c_init_rate_fallback(struct ieee80211_hw *hw)
 537 {
 538         struct rtl_priv *rtlpriv = rtl_priv(hw);
 539
 540         /* Set Data Auto Rate Fallback Retry Count register. */
 541         rtl_write_dword(rtlpriv,  REG_DARFRC, 0x00000000);
 542         rtl_write_dword(rtlpriv,  REG_DARFRC+4, 0x10080404);
 543         rtl_write_dword(rtlpriv,  REG_RARFRC, 0x04030201);
 544         rtl_write_dword(rtlpriv,  REG_RARFRC+4, 0x08070605);
 545 }
 546
 547 static void rtl92c_set_cck_sifs(struct ieee80211_hw *hw, u8 trx_sifs,
 548                                 u8 ctx_sifs)
 549 {
 550         struct rtl_priv *rtlpriv = rtl_priv(hw);
 551
 552         rtl_write_byte(rtlpriv, REG_SIFS_CCK, trx_sifs);
 553         rtl_write_byte(rtlpriv, (REG_SIFS_CCK + 1), ctx_sifs);
 554 }
 555
 556 static void rtl92c_set_ofdm_sifs(struct ieee80211_hw *hw, u8 trx_sifs,
 557                                  u8 ctx_sifs)
 558 {
 559         struct rtl_priv *rtlpriv = rtl_priv(hw);
 560
 561         rtl_write_byte(rtlpriv, REG_SIFS_OFDM, trx_sifs);
 562         rtl_write_byte(rtlpriv, (REG_SIFS_OFDM + 1), ctx_sifs);
 563 }
 564
 565 void rtl92c_init_edca_param(struct ieee80211_hw *hw,
 566                             u16 queue, u16 txop, u8 cw_min, u8 cw_max, u8 aifs)
 567 {
 568         /* sequence: VO, VI, BE, BK ==> the same as 92C hardware design.
 569          * referenc : enum nl80211_txq_q or ieee80211_set_wmm_default function.
 570          */
 571         u32 value;
 572         struct rtl_priv *rtlpriv = rtl_priv(hw);
 573
 574         value = (u32)aifs;
 575         value |= ((u32)cw_min & 0xF) << 8;
 576         value |= ((u32)cw_max & 0xF) << 12;
 577         value |= (u32)txop << 16;
 578         /* 92C hardware register sequence is the same as queue number. */
 579         rtl_write_dword(rtlpriv, (REG_EDCA_VO_PARAM + (queue * 4)), value);
 580 }
 581
 582 void rtl92c_init_edca(struct ieee80211_hw *hw)
 583 {
 584         u16 value16;
 585         struct rtl_priv *rtlpriv = rtl_priv(hw);
 586
 587         /* disable EDCCA count down, to reduce collison and retry */
 588         value16 = rtl_read_word(rtlpriv, REG_RD_CTRL);
 589         value16 |= DIS_EDCA_CNT_DWN;
 590         rtl_write_word(rtlpriv, REG_RD_CTRL, value16);
 591         /* Update SIFS timing.  ??????????
 592          * pHalData->SifsTime = 0x0e0e0a0a; */
 593         rtl92c_set_cck_sifs(hw, 0xa, 0xa);
 594         rtl92c_set_ofdm_sifs(hw, 0xe, 0xe);
 595         /* Set CCK/OFDM SIFS to be 10us. */
 596         rtl_write_word(rtlpriv, REG_SIFS_CCK, 0x0a0a);
 597         rtl_write_word(rtlpriv, REG_SIFS_OFDM, 0x1010);
 598         rtl_write_word(rtlpriv, REG_PROT_MODE_CTRL, 0x0204);
 599         rtl_write_dword(rtlpriv, REG_BAR_MODE_CTRL, 0x014004);
 600         /* TXOP */
 601         rtl_write_dword(rtlpriv, REG_EDCA_BE_PARAM, 0x005EA42B);
 602         rtl_write_dword(rtlpriv, REG_EDCA_BK_PARAM, 0x0000A44F);
 603         rtl_write_dword(rtlpriv, REG_EDCA_VI_PARAM, 0x005EA324);
 604         rtl_write_dword(rtlpriv, REG_EDCA_VO_PARAM, 0x002FA226);
 605         /* PIFS */
 606         rtl_write_byte(rtlpriv, REG_PIFS, 0x1C);
 607         /* AGGR BREAK TIME Register */
 608         rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
 609         rtl_write_word(rtlpriv, REG_NAV_PROT_LEN, 0x0040);
 610         rtl_write_byte(rtlpriv, REG_BCNDMATIM, 0x02);
 611         rtl_write_byte(rtlpriv, REG_ATIMWND, 0x02);
 612 }
 613
 614 void rtl92c_init_ampdu_aggregation(struct ieee80211_hw *hw)
 615 {
 616         struct rtl_priv *rtlpriv = rtl_priv(hw);
 617
 618         rtl_write_dword(rtlpriv, REG_AGGLEN_LMT, 0x99997631);
 619         rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
 620         /* init AMPDU aggregation number, tuning for Tx's TP, */
 621         rtl_write_word(rtlpriv, 0x4CA, 0x0708);
 622 }
 623
 624 void rtl92c_init_beacon_max_error(struct ieee80211_hw *hw, bool infra_mode)
 625 {
 626         struct rtl_priv *rtlpriv = rtl_priv(hw);
 627
 628         rtl_write_byte(rtlpriv, REG_BCN_MAX_ERR, 0xFF);
 629 }
 630
 631 void rtl92c_init_rdg_setting(struct ieee80211_hw *hw)
 632 {
 633         struct rtl_priv *rtlpriv = rtl_priv(hw);
 634
 635         rtl_write_byte(rtlpriv, REG_RD_CTRL, 0xFF);
 636         rtl_write_word(rtlpriv, REG_RD_NAV_NXT, 0x200);
 637         rtl_write_byte(rtlpriv, REG_RD_RESP_PKT_TH, 0x05);
 638 }
 639
 640 void rtl92c_init_retry_function(struct ieee80211_hw *hw)
 641 {
 642         u8      value8;
 643         struct rtl_priv *rtlpriv = rtl_priv(hw);
 644
 645         value8 = rtl_read_byte(rtlpriv, REG_FWHW_TXQ_CTRL);
 646         value8 |= EN_AMPDU_RTY_NEW;
 647         rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL, value8);
 648         /* Set ACK timeout */
 649         rtl_write_byte(rtlpriv, REG_ACKTO, 0x40);
 650 }
 651
 652 void rtl92c_init_beacon_parameters(struct ieee80211_hw *hw,
 653                                    enum version_8192c version)
 654 {
 655         struct rtl_priv *rtlpriv = rtl_priv(hw);
 656         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 657
 658         rtl_write_word(rtlpriv, REG_TBTT_PROHIBIT, 0x6404);/* ms */
 659         rtl_write_byte(rtlpriv, REG_DRVERLYINT, DRIVER_EARLY_INT_TIME);/*ms*/
 660         rtl_write_byte(rtlpriv, REG_BCNDMATIM, BCN_DMA_ATIME_INT_TIME);
 661         if (IS_NORMAL_CHIP(rtlhal->version))
 662                 rtl_write_word(rtlpriv, REG_BCNTCFG, 0x660F);
 663         else
 664                 rtl_write_word(rtlpriv, REG_BCNTCFG, 0x66FF);
 665 }
 666
 667 void rtl92c_disable_fast_edca(struct ieee80211_hw *hw)
 668 {
 669         struct rtl_priv *rtlpriv = rtl_priv(hw);
 670
 671         rtl_write_word(rtlpriv, REG_FAST_EDCA_CTRL, 0);
 672 }
 673
 674 void rtl92c_set_min_space(struct ieee80211_hw *hw, bool is2T)
 675 {
 676         struct rtl_priv *rtlpriv = rtl_priv(hw);
 677         u8 value = is2T ? MAX_MSS_DENSITY_2T : MAX_MSS_DENSITY_1T;
 678
 679         rtl_write_byte(rtlpriv, REG_AMPDU_MIN_SPACE, value);
 680 }
 681
 682 u16 rtl92c_get_mgt_filter(struct ieee80211_hw *hw)
 683 {
 684         struct rtl_priv *rtlpriv = rtl_priv(hw);
 685
 686         return rtl_read_word(rtlpriv, REG_RXFLTMAP0);
 687 }
 688
 689 void rtl92c_set_mgt_filter(struct ieee80211_hw *hw, u16 filter)
 690 {
 691         struct rtl_priv *rtlpriv = rtl_priv(hw);
 692
 693         rtl_write_word(rtlpriv, REG_RXFLTMAP0, filter);
 694 }
 695
 696 u16 rtl92c_get_ctrl_filter(struct ieee80211_hw *hw)
 697 {
 698         struct rtl_priv *rtlpriv = rtl_priv(hw);
 699
 700         return rtl_read_word(rtlpriv, REG_RXFLTMAP1);
 701 }
 702
 703 void rtl92c_set_ctrl_filter(struct ieee80211_hw *hw, u16 filter)
 704 {
 705         struct rtl_priv *rtlpriv = rtl_priv(hw);
 706
 707         rtl_write_word(rtlpriv, REG_RXFLTMAP1, filter);
 708 }
 709
 710 u16 rtl92c_get_data_filter(struct ieee80211_hw *hw)
 711 {
 712         struct rtl_priv *rtlpriv = rtl_priv(hw);
 713
 714         return rtl_read_word(rtlpriv,  REG_RXFLTMAP2);
 715 }
 716
 717 void rtl92c_set_data_filter(struct ieee80211_hw *hw, u16 filter)
 718 {
 719         struct rtl_priv *rtlpriv = rtl_priv(hw);
 720
 721         rtl_write_word(rtlpriv, REG_RXFLTMAP2, filter);
 722 }
 723 /*==============================================================*/
 724
 725 static u8 _rtl92c_query_rxpwrpercentage(char antpower)
 726 {
 727         if ((antpower <= -100) || (antpower >= 20))
 728                 return 0;
 729         else if (antpower >= 0)
 730                 return 100;
 731         else
 732                 return 100 + antpower;
 733 }
 734
 735 static u8 _rtl92c_evm_db_to_percentage(char value)
 736 {
 737         char ret_val;
 738
 739         ret_val = value;
 740         if (ret_val >= 0)
 741                 ret_val = 0;
 742         if (ret_val <= -33)
 743                 ret_val = -33;
 744         ret_val = 0 - ret_val;
 745         ret_val *= 3;
 746         if (ret_val == 99)
 747                 ret_val = 100;
 748         return ret_val;
 749 }
 750
 751 static long _rtl92c_translate_todbm(struct ieee80211_hw *hw,
 752                                      u8 signal_strength_index)
 753 {
 754         long signal_power;
 755
 756         signal_power = (long)((signal_strength_index + 1) >> 1);
 757         signal_power -= 95;
 758         return signal_power;
 759 }
 760
 761 static long _rtl92c_signal_scale_mapping(struct ieee80211_hw *hw,
 762                 long currsig)
 763 {
 764         long retsig;
 765
 766         if (currsig >= 61 && currsig <= 100)
 767                 retsig = 90 + ((currsig - 60) / 4);
 768         else if (currsig >= 41 && currsig <= 60)
 769                 retsig = 78 + ((currsig - 40) / 2);
 770         else if (currsig >= 31 && currsig <= 40)
 771                 retsig = 66 + (currsig - 30);
 772         else if (currsig >= 21 && currsig <= 30)
 773                 retsig = 54 + (currsig - 20);
 774         else if (currsig >= 5 && currsig <= 20)
 775                 retsig = 42 + (((currsig - 5) * 2) / 3);
 776         else if (currsig == 4)
 777                 retsig = 36;
 778         else if (currsig == 3)
 779                 retsig = 27;
 780         else if (currsig == 2)
 781                 retsig = 18;
 782         else if (currsig == 1)
 783                 retsig = 9;
 784         else
 785                 retsig = currsig;
 786         return retsig;
 787 }
 788
 789 static void _rtl92c_query_rxphystatus(struct ieee80211_hw *hw,
 790                                       struct rtl_stats *pstats,
 791                                       struct rx_desc_92c *pdesc,
 792                                       struct rx_fwinfo_92c *p_drvinfo,
 793                                       bool packet_match_bssid,
 794                                       bool packet_toself,
 795                                       bool packet_beacon)
 796 {
 797         struct rtl_priv *rtlpriv = rtl_priv(hw);
 798         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 799         struct phy_sts_cck_8192s_t *cck_buf;
 800         s8 rx_pwr_all = 0, rx_pwr[4];
 801         u8 rf_rx_num = 0, evm, pwdb_all;
 802         u8 i, max_spatial_stream;
 803         u32 rssi, total_rssi = 0;
 804         bool in_powersavemode = false;
 805         bool is_cck_rate;
 806
 807         is_cck_rate = RX_HAL_IS_CCK_RATE(pdesc);
 808         pstats->packet_matchbssid = packet_match_bssid;
 809         pstats->packet_toself = packet_toself;
 810         pstats->is_cck = is_cck_rate;
 811         pstats->packet_beacon = packet_beacon;
 812         pstats->is_cck = is_cck_rate;
 813         pstats->RX_SIGQ[0] = -1;
 814         pstats->RX_SIGQ[1] = -1;
 815         if (is_cck_rate) {
 816                 u8 report, cck_highpwr;
 817                 cck_buf = (struct phy_sts_cck_8192s_t *)p_drvinfo;
 818                 if (!in_powersavemode)
 819                         cck_highpwr = rtlphy->cck_high_power;
 820                 else
 821                         cck_highpwr = false;
 822                 if (!cck_highpwr) {
 823                         u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
 824                         report = cck_buf->cck_agc_rpt & 0xc0;
 825                         report = report >> 6;
 826                         switch (report) {
 827                         case 0x3:
 828                                 rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
 829                                 break;
 830                         case 0x2:
 831                                 rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
 832                                 break;
 833                         case 0x1:
 834                                 rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
 835                                 break;
 836                         case 0x0:
 837                                 rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
 838                                 break;
 839                         }
 840                 } else {
 841                         u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
 842                         report = p_drvinfo->cfosho[0] & 0x60;
 843                         report = report >> 5;
 844                         switch (report) {
 845                         case 0x3:
 846                                 rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1);
 847                                 break;
 848                         case 0x2:
 849                                 rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1);
 850                                 break;
 851                         case 0x1:
 852                                 rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1);
 853                                 break;
 854                         case 0x0:
 855                                 rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1);
 856                                 break;
 857                         }
 858                 }
 859                 pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
 860                 pstats->rx_pwdb_all = pwdb_all;
 861                 pstats->recvsignalpower = rx_pwr_all;
 862                 if (packet_match_bssid) {
 863                         u8 sq;
 864                         if (pstats->rx_pwdb_all > 40)
 865                                 sq = 100;
 866                         else {
 867                                 sq = cck_buf->sq_rpt;
 868                                 if (sq > 64)
 869                                         sq = 0;
 870                                 else if (sq < 20)
 871                                         sq = 100;
 872                                 else
 873                                         sq = ((64 - sq) * 100) / 44;
 874                         }
 875                         pstats->signalquality = sq;
 876                         pstats->RX_SIGQ[0] = sq;
 877                         pstats->RX_SIGQ[1] = -1;
 878                 }
 879         } else {
 880                 rtlpriv->dm.rfpath_rxenable[0] =
 881                     rtlpriv->dm.rfpath_rxenable[1] = true;
 882                 for (i = RF90_PATH_A; i < RF90_PATH_MAX; i++) {
 883                         if (rtlpriv->dm.rfpath_rxenable[i])
 884                                 rf_rx_num++;
 885                         rx_pwr[i] =
 886                             ((p_drvinfo->gain_trsw[i] & 0x3f) * 2) - 110;
 887                         rssi = _rtl92c_query_rxpwrpercentage(rx_pwr[i]);
 888                         total_rssi += rssi;
 889                         rtlpriv->stats.rx_snr_db[i] =
 890                             (long)(p_drvinfo->rxsnr[i] / 2);
 891
 892                         if (packet_match_bssid)
 893                                 pstats->rx_mimo_signalstrength[i] = (u8) rssi;
 894                 }
 895                 rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 110;
 896                 pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
 897                 pstats->rx_pwdb_all = pwdb_all;
 898                 pstats->rxpower = rx_pwr_all;
 899                 pstats->recvsignalpower = rx_pwr_all;
 900                 if (GET_RX_DESC_RX_MCS(pdesc) &&
 901                     GET_RX_DESC_RX_MCS(pdesc) >= DESC92C_RATEMCS8 &&
 902                     GET_RX_DESC_RX_MCS(pdesc) <= DESC92C_RATEMCS15)
 903                         max_spatial_stream = 2;
 904                 else
 905                         max_spatial_stream = 1;
 906                 for (i = 0; i < max_spatial_stream; i++) {
 907                         evm = _rtl92c_evm_db_to_percentage(p_drvinfo->rxevm[i]);
 908                         if (packet_match_bssid) {
 909                                 if (i == 0)
 910                                         pstats->signalquality =
 911                                             (u8) (evm & 0xff);
 912                                 pstats->RX_SIGQ[i] =
 913                                     (u8) (evm & 0xff);
 914                         }
 915                 }
 916         }
 917         if (is_cck_rate)
 918                 pstats->signalstrength =
 919                     (u8) (_rtl92c_signal_scale_mapping(hw, pwdb_all));
 920         else if (rf_rx_num != 0)
 921                 pstats->signalstrength =
 922                     (u8) (_rtl92c_signal_scale_mapping
 923                           (hw, total_rssi /= rf_rx_num));
 924 }
 925
 926 static void _rtl92c_process_ui_rssi(struct ieee80211_hw *hw,
 927                 struct rtl_stats *pstats)
 928 {
 929         struct rtl_priv *rtlpriv = rtl_priv(hw);
 930         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 931         u8 rfpath;
 932         u32 last_rssi, tmpval;
 933
 934         if (pstats->packet_toself || pstats->packet_beacon) {
 935                 rtlpriv->stats.rssi_calculate_cnt++;
 936                 if (rtlpriv->stats.ui_rssi.total_num++ >=
 937                     PHY_RSSI_SLID_WIN_MAX) {
 938                         rtlpriv->stats.ui_rssi.total_num =
 939                             PHY_RSSI_SLID_WIN_MAX;
 940                         last_rssi =
 941                             rtlpriv->stats.ui_rssi.elements[rtlpriv->
 942                                                            stats.ui_rssi.index];
 943                         rtlpriv->stats.ui_rssi.total_val -= last_rssi;
 944                 }
 945                 rtlpriv->stats.ui_rssi.total_val += pstats->signalstrength;
 946                 rtlpriv->stats.ui_rssi.elements[rtlpriv->stats.ui_rssi.
 947                                         index++] = pstats->signalstrength;
 948                 if (rtlpriv->stats.ui_rssi.index >= PHY_RSSI_SLID_WIN_MAX)
 949                         rtlpriv->stats.ui_rssi.index = 0;
 950                 tmpval = rtlpriv->stats.ui_rssi.total_val /
 951                     rtlpriv->stats.ui_rssi.total_num;
 952                 rtlpriv->stats.signal_strength =
 953                     _rtl92c_translate_todbm(hw, (u8) tmpval);
 954                 pstats->rssi = rtlpriv->stats.signal_strength;
 955         }
 956         if (!pstats->is_cck && pstats->packet_toself) {
 957                 for (rfpath = RF90_PATH_A; rfpath < rtlphy->num_total_rfpath;
 958                      rfpath++) {
 959                         if (!rtl8192_phy_check_is_legal_rfpath(hw, rfpath))
 960                                 continue;
 961                         if (rtlpriv->stats.rx_rssi_percentage[rfpath] == 0) {
 962                                 rtlpriv->stats.rx_rssi_percentage[rfpath] =
 963                                     pstats->rx_mimo_signalstrength[rfpath];
 964                         }
 965                         if (pstats->rx_mimo_signalstrength[rfpath] >
 966                             rtlpriv->stats.rx_rssi_percentage[rfpath]) {
 967                                 rtlpriv->stats.rx_rssi_percentage[rfpath] =
 968                                     ((rtlpriv->stats.
 969                                       rx_rssi_percentage[rfpath] *
 970                                       (RX_SMOOTH_FACTOR - 1)) +
 971                                      (pstats->rx_mimo_signalstrength[rfpath])) /
 972                                     (RX_SMOOTH_FACTOR);
 973
 974                                 rtlpriv->stats.rx_rssi_percentage[rfpath] =
 975                                     rtlpriv->stats.rx_rssi_percentage[rfpath] +
 976                                     1;
 977                         } else {
 978                                 rtlpriv->stats.rx_rssi_percentage[rfpath] =
 979                                     ((rtlpriv->stats.
 980                                       rx_rssi_percentage[rfpath] *
 981                                       (RX_SMOOTH_FACTOR - 1)) +
 982                                      (pstats->rx_mimo_signalstrength[rfpath])) /
 983                                     (RX_SMOOTH_FACTOR);
 984                         }
 985                 }
 986         }
 987 }
 988
 989 static void _rtl92c_update_rxsignalstatistics(struct ieee80211_hw *hw,
 990                                                struct rtl_stats *pstats)
 991 {
 992         struct rtl_priv *rtlpriv = rtl_priv(hw);
 993         int weighting = 0;
 994
 995         if (rtlpriv->stats.recv_signal_power == 0)
 996                 rtlpriv->stats.recv_signal_power = pstats->recvsignalpower;
 997         if (pstats->recvsignalpower > rtlpriv->stats.recv_signal_power)
 998                 weighting = 5;
 999         else if (pstats->recvsignalpower < rtlpriv->stats.recv_signal_power)
1000                 weighting = (-5);
1001         rtlpriv->stats.recv_signal_power =
1002             (rtlpriv->stats.recv_signal_power * 5 +
1003              pstats->recvsignalpower + weighting) / 6;
1004 }
1005
1006 static void _rtl92c_process_pwdb(struct ieee80211_hw *hw,
1007                 struct rtl_stats *pstats)
1008 {
1009         struct rtl_priv *rtlpriv = rtl_priv(hw);
1010         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1011         long undecorated_smoothed_pwdb = 0;
1012
1013         if (mac->opmode == NL80211_IFTYPE_ADHOC) {
1014                 return;
1015         } else {
1016                 undecorated_smoothed_pwdb =
1017                     rtlpriv->dm.undecorated_smoothed_pwdb;
1018         }
1019         if (pstats->packet_toself || pstats->packet_beacon) {
1020                 if (undecorated_smoothed_pwdb < 0)
1021                         undecorated_smoothed_pwdb = pstats->rx_pwdb_all;
1022                 if (pstats->rx_pwdb_all > (u32) undecorated_smoothed_pwdb) {
1023                         undecorated_smoothed_pwdb =
1024                             (((undecorated_smoothed_pwdb) *
1025                               (RX_SMOOTH_FACTOR - 1)) +
1026                              (pstats->rx_pwdb_all)) / (RX_SMOOTH_FACTOR);
1027                         undecorated_smoothed_pwdb = undecorated_smoothed_pwdb
1028                             + 1;
1029                 } else {
1030                         undecorated_smoothed_pwdb =
1031                             (((undecorated_smoothed_pwdb) *
1032                               (RX_SMOOTH_FACTOR - 1)) +
1033                              (pstats->rx_pwdb_all)) / (RX_SMOOTH_FACTOR);
1034                 }
1035                 rtlpriv->dm.undecorated_smoothed_pwdb =
1036                     undecorated_smoothed_pwdb;
1037                 _rtl92c_update_rxsignalstatistics(hw, pstats);
1038         }
1039 }
1040
1041 static void _rtl92c_process_LINK_Q(struct ieee80211_hw *hw,
1042                                              struct rtl_stats *pstats)
1043 {
1044         struct rtl_priv *rtlpriv = rtl_priv(hw);
1045         u32 last_evm = 0, n_stream, tmpval;
1046
1047         if (pstats->signalquality != 0) {
1048                 if (pstats->packet_toself || pstats->packet_beacon) {
1049                         if (rtlpriv->stats.LINK_Q.total_num++ >=
1050                             PHY_LINKQUALITY_SLID_WIN_MAX) {
1051                                 rtlpriv->stats.LINK_Q.total_num =
1052                                     PHY_LINKQUALITY_SLID_WIN_MAX;
1053                                 last_evm =
1054                                     rtlpriv->stats.LINK_Q.elements
1055                                     [rtlpriv->stats.LINK_Q.index];
1056                                 rtlpriv->stats.LINK_Q.total_val -=
1057                                     last_evm;
1058                         }
1059                         rtlpriv->stats.LINK_Q.total_val +=
1060                             pstats->signalquality;
1061                         rtlpriv->stats.LINK_Q.elements
1062                            [rtlpriv->stats.LINK_Q.index++] =
1063                             pstats->signalquality;
1064                         if (rtlpriv->stats.LINK_Q.index >=
1065                             PHY_LINKQUALITY_SLID_WIN_MAX)
1066                                 rtlpriv->stats.LINK_Q.index = 0;
1067                         tmpval = rtlpriv->stats.LINK_Q.total_val /
1068                             rtlpriv->stats.LINK_Q.total_num;
1069                         rtlpriv->stats.signal_quality = tmpval;
1070                         rtlpriv->stats.last_sigstrength_inpercent = tmpval;
1071                         for (n_stream = 0; n_stream < 2;
1072                              n_stream++) {
1073                                 if (pstats->RX_SIGQ[n_stream] != -1) {
1074                                         if (!rtlpriv->stats.RX_EVM[n_stream]) {
1075                                                 rtlpriv->stats.RX_EVM[n_stream]
1076                                                  = pstats->RX_SIGQ[n_stream];
1077                                         }
1078                                         rtlpriv->stats.RX_EVM[n_stream] =
1079                                             ((rtlpriv->stats.RX_EVM
1080                                             [n_stream] *
1081                                             (RX_SMOOTH_FACTOR - 1)) +
1082                                             (pstats->RX_SIGQ
1083                                             [n_stream] * 1)) /
1084                                             (RX_SMOOTH_FACTOR);
1085                                 }
1086                         }
1087                 }
1088         } else {
1089                 ;
1090         }
1091 }
1092
1093 static void _rtl92c_process_phyinfo(struct ieee80211_hw *hw,
1094                                      u8 *buffer,
1095                                      struct rtl_stats *pcurrent_stats)
1096 {
1097         if (!pcurrent_stats->packet_matchbssid &&
1098             !pcurrent_stats->packet_beacon)
1099                 return;
1100         _rtl92c_process_ui_rssi(hw, pcurrent_stats);
1101         _rtl92c_process_pwdb(hw, pcurrent_stats);
1102         _rtl92c_process_LINK_Q(hw, pcurrent_stats);
1103 }
1104
1105 void rtl92c_translate_rx_signal_stuff(struct ieee80211_hw *hw,
1106                                                struct sk_buff *skb,
1107                                                struct rtl_stats *pstats,
1108                                                struct rx_desc_92c *pdesc,
1109                                                struct rx_fwinfo_92c *p_drvinfo)
1110 {
1111         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1112         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1113         struct ieee80211_hdr *hdr;
1114         u8 *tmp_buf;
1115         u8 *praddr;
1116         u8 *psaddr;
1117         __le16 fc;
1118         u16 type, cpu_fc;
1119         bool packet_matchbssid, packet_toself, packet_beacon;
1120
1121         tmp_buf = skb->data + pstats->rx_drvinfo_size + pstats->rx_bufshift;
1122         hdr = (struct ieee80211_hdr *)tmp_buf;
1123         fc = hdr->frame_control;
1124         cpu_fc = le16_to_cpu(fc);
1125         type = WLAN_FC_GET_TYPE(fc);
1126         praddr = hdr->addr1;
1127         psaddr = hdr->addr2;
1128         packet_matchbssid =
1129             ((IEEE80211_FTYPE_CTL != type) &&
1130              (!compare_ether_addr(mac->bssid,
1131                           (cpu_fc & IEEE80211_FCTL_TODS) ?
1132                           hdr->addr1 : (cpu_fc & IEEE80211_FCTL_FROMDS) ?
1133                           hdr->addr2 : hdr->addr3)) &&
1134              (!pstats->hwerror) && (!pstats->crc) && (!pstats->icv));
1135
1136         packet_toself = packet_matchbssid &&
1137             (!compare_ether_addr(praddr, rtlefuse->dev_addr));
1138         if (ieee80211_is_beacon(fc))
1139                 packet_beacon = true;
1140         _rtl92c_query_rxphystatus(hw, pstats, pdesc, p_drvinfo,
1141                                    packet_matchbssid, packet_toself,
1142                                    packet_beacon);
1143         _rtl92c_process_phyinfo(hw, tmp_buf, pstats);
1144 }