drivers/net/wireless/realtek/rtlwifi/rtl8192se/sw.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 "../base.h"
  33 #include "../pci.h"
  34 #include "reg.h"
  35 #include "def.h"
  36 #include "phy.h"
  37 #include "dm.h"
  38 #include "fw.h"
  39 #include "hw.h"
  40 #include "sw.h"
  41 #include "trx.h"
  42 #include "led.h"
  43
  44 #include <linux/module.h>
  45
  46 static void rtl92s_init_aspm_vars(struct ieee80211_hw *hw)
  47 {
  48         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
  49
  50         /*close ASPM for AMD defaultly */
  51         rtlpci->const_amdpci_aspm = 0;
  52
  53         /* ASPM PS mode.
  54          * 0 - Disable ASPM,
  55          * 1 - Enable ASPM without Clock Req,
  56          * 2 - Enable ASPM with Clock Req,
  57          * 3 - Alwyas Enable ASPM with Clock Req,
  58          * 4 - Always Enable ASPM without Clock Req.
  59          * set defult to RTL8192CE:3 RTL8192E:2
  60          * */
  61         rtlpci->const_pci_aspm = 2;
  62
  63         /*Setting for PCI-E device */
  64         rtlpci->const_devicepci_aspm_setting = 0x03;
  65
  66         /*Setting for PCI-E bridge */
  67         rtlpci->const_hostpci_aspm_setting = 0x02;
  68
  69         /* In Hw/Sw Radio Off situation.
  70          * 0 - Default,
  71          * 1 - From ASPM setting without low Mac Pwr,
  72          * 2 - From ASPM setting with low Mac Pwr,
  73          * 3 - Bus D3
  74          * set default to RTL8192CE:0 RTL8192SE:2
  75          */
  76         rtlpci->const_hwsw_rfoff_d3 = 2;
  77
  78         /* This setting works for those device with
  79          * backdoor ASPM setting such as EPHY setting.
  80          * 0 - Not support ASPM,
  81          * 1 - Support ASPM,
  82          * 2 - According to chipset.
  83          */
  84         rtlpci->const_support_pciaspm = 2;
  85 }
  86
  87 static void rtl92se_fw_cb(const struct firmware *firmware, void *context)
  88 {
  89         struct ieee80211_hw *hw = context;
  90         struct rtl_priv *rtlpriv = rtl_priv(hw);
  91         struct rt_firmware *pfirmware = NULL;
  92
  93         RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
  94                          "Firmware callback routine entered!\n");
  95         complete(&rtlpriv->firmware_loading_complete);
  96         if (!firmware) {
  97                 pr_err("Firmware %s not available\n", rtlpriv->cfg->fw_name);
  98                 rtlpriv->max_fw_size = 0;
  99                 return;
 100         }
 101         if (firmware->size > rtlpriv->max_fw_size) {
 102                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 103                          "Firmware is too big!\n");
 104                 rtlpriv->max_fw_size = 0;
 105                 release_firmware(firmware);
 106                 return;
 107         }
 108         pfirmware = (struct rt_firmware *)rtlpriv->rtlhal.pfirmware;
 109         memcpy(pfirmware->sz_fw_tmpbuffer, firmware->data, firmware->size);
 110         pfirmware->sz_fw_tmpbufferlen = firmware->size;
 111         release_firmware(firmware);
 112 }
 113
 114 static int rtl92s_init_sw_vars(struct ieee80211_hw *hw)
 115 {
 116         struct rtl_priv *rtlpriv = rtl_priv(hw);
 117         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 118         int err = 0;
 119         u16 earlyrxthreshold = 7;
 120
 121         rtlpriv->dm.dm_initialgain_enable = true;
 122         rtlpriv->dm.dm_flag = 0;
 123         rtlpriv->dm.disable_framebursting = false;
 124         rtlpriv->dm.thermalvalue = 0;
 125         rtlpriv->dm.useramask = true;
 126
 127         /* compatible 5G band 91se just 2.4G band & smsp */
 128         rtlpriv->rtlhal.current_bandtype = BAND_ON_2_4G;
 129         rtlpriv->rtlhal.bandset = BAND_ON_2_4G;
 130         rtlpriv->rtlhal.macphymode = SINGLEMAC_SINGLEPHY;
 131
 132         rtlpci->transmit_config = 0;
 133
 134         rtlpci->receive_config =
 135                         RCR_APPFCS |
 136                         RCR_APWRMGT |
 137                         /*RCR_ADD3 |*/
 138                         RCR_AMF |
 139                         RCR_ADF |
 140                         RCR_APP_MIC |
 141                         RCR_APP_ICV |
 142                         RCR_AICV |
 143                         /* Accept ICV error, CRC32 Error */
 144                         RCR_ACRC32 |
 145                         RCR_AB |
 146                         /* Accept Broadcast, Multicast */
 147                         RCR_AM  |
 148                         /* Accept Physical match */
 149                         RCR_APM |
 150                         /* Accept Destination Address packets */
 151                         /*RCR_AAP |*/
 152                         RCR_APP_PHYST_STAFF |
 153                         /* Accept PHY status */
 154                         RCR_APP_PHYST_RXFF |
 155                         (earlyrxthreshold << RCR_FIFO_OFFSET);
 156
 157         rtlpci->irq_mask[0] = (u32)
 158                         (IMR_ROK |
 159                         IMR_VODOK |
 160                         IMR_VIDOK |
 161                         IMR_BEDOK |
 162                         IMR_BKDOK |
 163                         IMR_HCCADOK |
 164                         IMR_MGNTDOK |
 165                         IMR_COMDOK |
 166                         IMR_HIGHDOK |
 167                         IMR_BDOK |
 168                         IMR_RXCMDOK |
 169                         /*IMR_TIMEOUT0 |*/
 170                         IMR_RDU |
 171                         IMR_RXFOVW      |
 172                         IMR_BCNINT
 173                         /*| IMR_TXFOVW*/
 174                         /*| IMR_TBDOK |
 175                         IMR_TBDER*/);
 176
 177         rtlpci->irq_mask[1] = (u32) 0;
 178
 179         rtlpci->shortretry_limit = 0x30;
 180         rtlpci->longretry_limit = 0x30;
 181
 182         rtlpci->first_init = true;
 183
 184         /* for debug level */
 185         rtlpriv->dbg.global_debuglevel = rtlpriv->cfg->mod_params->debug;
 186         /* for LPS & IPS */
 187         rtlpriv->psc.inactiveps = rtlpriv->cfg->mod_params->inactiveps;
 188         rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
 189         rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
 190         rtlpriv->cfg->mod_params->sw_crypto =
 191                 rtlpriv->cfg->mod_params->sw_crypto;
 192         if (!rtlpriv->psc.inactiveps)
 193                 pr_info("Power Save off (module option)\n");
 194         if (!rtlpriv->psc.fwctrl_lps)
 195                 pr_info("FW Power Save off (module option)\n");
 196         rtlpriv->psc.reg_fwctrl_lps = 3;
 197         rtlpriv->psc.reg_max_lps_awakeintvl = 5;
 198         /* for ASPM, you can close aspm through
 199          * set const_support_pciaspm = 0 */
 200         rtl92s_init_aspm_vars(hw);
 201
 202         if (rtlpriv->psc.reg_fwctrl_lps == 1)
 203                 rtlpriv->psc.fwctrl_psmode = FW_PS_MIN_MODE;
 204         else if (rtlpriv->psc.reg_fwctrl_lps == 2)
 205                 rtlpriv->psc.fwctrl_psmode = FW_PS_MAX_MODE;
 206         else if (rtlpriv->psc.reg_fwctrl_lps == 3)
 207                 rtlpriv->psc.fwctrl_psmode = FW_PS_DTIM_MODE;
 208
 209         /* for firmware buf */
 210         rtlpriv->rtlhal.pfirmware = vzalloc(sizeof(struct rt_firmware));
 211         if (!rtlpriv->rtlhal.pfirmware)
 212                 return 1;
 213
 214         rtlpriv->max_fw_size = RTL8190_MAX_FIRMWARE_CODE_SIZE*2 +
 215                                sizeof(struct fw_hdr);
 216         pr_info("Driver for Realtek RTL8192SE/RTL8191SE\n"
 217                 "Loading firmware %s\n", rtlpriv->cfg->fw_name);
 218         /* request fw */
 219         err = request_firmware_nowait(THIS_MODULE, 1, rtlpriv->cfg->fw_name,
 220                                       rtlpriv->io.dev, GFP_KERNEL, hw,
 221                                       rtl92se_fw_cb);
 222         if (err) {
 223                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 224                          "Failed to request firmware!\n");
 225                 return 1;
 226         }
 227
 228         return err;
 229 }
 230
 231 static void rtl92s_deinit_sw_vars(struct ieee80211_hw *hw)
 232 {
 233         struct rtl_priv *rtlpriv = rtl_priv(hw);
 234
 235         if (rtlpriv->rtlhal.pfirmware) {
 236                 vfree(rtlpriv->rtlhal.pfirmware);
 237                 rtlpriv->rtlhal.pfirmware = NULL;
 238         }
 239 }
 240
 241 static bool rtl92se_is_tx_desc_closed(struct ieee80211_hw *hw, u8 hw_queue,
 242                                       u16 index)
 243 {
 244         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 245         struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
 246         u8 *entry = (u8 *)(&ring->desc[ring->idx]);
 247         u8 own = (u8)rtl92se_get_desc(entry, true, HW_DESC_OWN);
 248
 249         if (own)
 250                 return false;
 251         return true;
 252 }
 253
 254 static struct rtl_hal_ops rtl8192se_hal_ops = {
 255         .init_sw_vars = rtl92s_init_sw_vars,
 256         .deinit_sw_vars = rtl92s_deinit_sw_vars,
 257         .read_eeprom_info = rtl92se_read_eeprom_info,
 258         .interrupt_recognized = rtl92se_interrupt_recognized,
 259         .hw_init = rtl92se_hw_init,
 260         .hw_disable = rtl92se_card_disable,
 261         .hw_suspend = rtl92se_suspend,
 262         .hw_resume = rtl92se_resume,
 263         .enable_interrupt = rtl92se_enable_interrupt,
 264         .disable_interrupt = rtl92se_disable_interrupt,
 265         .set_network_type = rtl92se_set_network_type,
 266         .set_chk_bssid = rtl92se_set_check_bssid,
 267         .set_qos = rtl92se_set_qos,
 268         .set_bcn_reg = rtl92se_set_beacon_related_registers,
 269         .set_bcn_intv = rtl92se_set_beacon_interval,
 270         .update_interrupt_mask = rtl92se_update_interrupt_mask,
 271         .get_hw_reg = rtl92se_get_hw_reg,
 272         .set_hw_reg = rtl92se_set_hw_reg,
 273         .update_rate_tbl = rtl92se_update_hal_rate_tbl,
 274         .fill_tx_desc = rtl92se_tx_fill_desc,
 275         .fill_tx_cmddesc = rtl92se_tx_fill_cmddesc,
 276         .query_rx_desc = rtl92se_rx_query_desc,
 277         .set_channel_access = rtl92se_update_channel_access_setting,
 278         .radio_onoff_checking = rtl92se_gpio_radio_on_off_checking,
 279         .set_bw_mode = rtl92s_phy_set_bw_mode,
 280         .switch_channel = rtl92s_phy_sw_chnl,
 281         .dm_watchdog = rtl92s_dm_watchdog,
 282         .scan_operation_backup = rtl92s_phy_scan_operation_backup,
 283         .set_rf_power_state = rtl92s_phy_set_rf_power_state,
 284         .led_control = rtl92se_led_control,
 285         .set_desc = rtl92se_set_desc,
 286         .get_desc = rtl92se_get_desc,
 287         .is_tx_desc_closed = rtl92se_is_tx_desc_closed,
 288         .tx_polling = rtl92se_tx_polling,
 289         .enable_hw_sec = rtl92se_enable_hw_security_config,
 290         .set_key = rtl92se_set_key,
 291         .init_sw_leds = rtl92se_init_sw_leds,
 292         .get_bbreg = rtl92s_phy_query_bb_reg,
 293         .set_bbreg = rtl92s_phy_set_bb_reg,
 294         .get_rfreg = rtl92s_phy_query_rf_reg,
 295         .set_rfreg = rtl92s_phy_set_rf_reg,
 296         .get_btc_status = rtl_btc_status_false,
 297 };
 298
 299 static struct rtl_mod_params rtl92se_mod_params = {
 300         .sw_crypto = false,
 301         .inactiveps = true,
 302         .swctrl_lps = true,
 303         .fwctrl_lps = false,
 304         .debug = DBG_EMERG,
 305 };
 306
 307 /* Because memory R/W bursting will cause system hang/crash
 308  * for 92se, so we don't read back after every write action */
 309 static struct rtl_hal_cfg rtl92se_hal_cfg = {
 310         .bar_id = 1,
 311         .write_readback = false,
 312         .name = "rtl92s_pci",
 313         .fw_name = "rtlwifi/rtl8192sefw.bin",
 314         .ops = &rtl8192se_hal_ops,
 315         .mod_params = &rtl92se_mod_params,
 316
 317         .maps[SYS_ISO_CTRL] = REG_SYS_ISO_CTRL,
 318         .maps[SYS_FUNC_EN] = REG_SYS_FUNC_EN,
 319         .maps[SYS_CLK] = SYS_CLKR,
 320         .maps[MAC_RCR_AM] = RCR_AM,
 321         .maps[MAC_RCR_AB] = RCR_AB,
 322         .maps[MAC_RCR_ACRC32] = RCR_ACRC32,
 323         .maps[MAC_RCR_ACF] = RCR_ACF,
 324         .maps[MAC_RCR_AAP] = RCR_AAP,
 325         .maps[MAC_HIMR] = INTA_MASK,
 326         .maps[MAC_HIMRE] = INTA_MASK + 4,
 327
 328         .maps[EFUSE_TEST] = REG_EFUSE_TEST,
 329         .maps[EFUSE_CTRL] = REG_EFUSE_CTRL,
 330         .maps[EFUSE_CLK] = REG_EFUSE_CLK,
 331         .maps[EFUSE_CLK_CTRL] = REG_EFUSE_CTRL,
 332         .maps[EFUSE_PWC_EV12V] = 0, /* nouse for 8192se */
 333         .maps[EFUSE_FEN_ELDR] = 0, /* nouse for 8192se */
 334         .maps[EFUSE_LOADER_CLK_EN] = 0,/* nouse for 8192se */
 335         .maps[EFUSE_ANA8M] = EFUSE_ANA8M,
 336         .maps[EFUSE_HWSET_MAX_SIZE] = HWSET_MAX_SIZE_92S,
 337         .maps[EFUSE_MAX_SECTION_MAP] = EFUSE_MAX_SECTION,
 338         .maps[EFUSE_REAL_CONTENT_SIZE] = EFUSE_REAL_CONTENT_LEN,
 339         .maps[EFUSE_OOB_PROTECT_BYTES_LEN] = EFUSE_OOB_PROTECT_BYTES,
 340
 341         .maps[RWCAM] = REG_RWCAM,
 342         .maps[WCAMI] = REG_WCAMI,
 343         .maps[RCAMO] = REG_RCAMO,
 344         .maps[CAMDBG] = REG_CAMDBG,
 345         .maps[SECR] = REG_SECR,
 346         .maps[SEC_CAM_NONE] = CAM_NONE,
 347         .maps[SEC_CAM_WEP40] = CAM_WEP40,
 348         .maps[SEC_CAM_TKIP] = CAM_TKIP,
 349         .maps[SEC_CAM_AES] = CAM_AES,
 350         .maps[SEC_CAM_WEP104] = CAM_WEP104,
 351
 352         .maps[RTL_IMR_BCNDMAINT6] = IMR_BCNDMAINT6,
 353         .maps[RTL_IMR_BCNDMAINT5] = IMR_BCNDMAINT5,
 354         .maps[RTL_IMR_BCNDMAINT4] = IMR_BCNDMAINT4,
 355         .maps[RTL_IMR_BCNDMAINT3] = IMR_BCNDMAINT3,
 356         .maps[RTL_IMR_BCNDMAINT2] = IMR_BCNDMAINT2,
 357         .maps[RTL_IMR_BCNDMAINT1] = IMR_BCNDMAINT1,
 358         .maps[RTL_IMR_BCNDOK8] = IMR_BCNDOK8,
 359         .maps[RTL_IMR_BCNDOK7] = IMR_BCNDOK7,
 360         .maps[RTL_IMR_BCNDOK6] = IMR_BCNDOK6,
 361         .maps[RTL_IMR_BCNDOK5] = IMR_BCNDOK5,
 362         .maps[RTL_IMR_BCNDOK4] = IMR_BCNDOK4,
 363         .maps[RTL_IMR_BCNDOK3] = IMR_BCNDOK3,
 364         .maps[RTL_IMR_BCNDOK2] = IMR_BCNDOK2,
 365         .maps[RTL_IMR_BCNDOK1] = IMR_BCNDOK1,
 366         .maps[RTL_IMR_TIMEOUT2] = IMR_TIMEOUT2,
 367         .maps[RTL_IMR_TIMEOUT1] = IMR_TIMEOUT1,
 368
 369         .maps[RTL_IMR_TXFOVW] = IMR_TXFOVW,
 370         .maps[RTL_IMR_PSTIMEOUT] = IMR_PSTIMEOUT,
 371         .maps[RTL_IMR_BCNINT] = IMR_BCNINT,
 372         .maps[RTL_IMR_RXFOVW] = IMR_RXFOVW,
 373         .maps[RTL_IMR_RDU] = IMR_RDU,
 374         .maps[RTL_IMR_ATIMEND] = IMR_ATIMEND,
 375         .maps[RTL_IMR_BDOK] = IMR_BDOK,
 376         .maps[RTL_IMR_MGNTDOK] = IMR_MGNTDOK,
 377         .maps[RTL_IMR_TBDER] = IMR_TBDER,
 378         .maps[RTL_IMR_HIGHDOK] = IMR_HIGHDOK,
 379         .maps[RTL_IMR_COMDOK] = IMR_COMDOK,
 380         .maps[RTL_IMR_TBDOK] = IMR_TBDOK,
 381         .maps[RTL_IMR_BKDOK] = IMR_BKDOK,
 382         .maps[RTL_IMR_BEDOK] = IMR_BEDOK,
 383         .maps[RTL_IMR_VIDOK] = IMR_VIDOK,
 384         .maps[RTL_IMR_VODOK] = IMR_VODOK,
 385         .maps[RTL_IMR_ROK] = IMR_ROK,
 386         .maps[RTL_IBSS_INT_MASKS] = (IMR_BCNINT | IMR_TBDOK | IMR_TBDER),
 387
 388         .maps[RTL_RC_CCK_RATE1M] = DESC_RATE1M,
 389         .maps[RTL_RC_CCK_RATE2M] = DESC_RATE2M,
 390         .maps[RTL_RC_CCK_RATE5_5M] = DESC_RATE5_5M,
 391         .maps[RTL_RC_CCK_RATE11M] = DESC_RATE11M,
 392         .maps[RTL_RC_OFDM_RATE6M] = DESC_RATE6M,
 393         .maps[RTL_RC_OFDM_RATE9M] = DESC_RATE9M,
 394         .maps[RTL_RC_OFDM_RATE12M] = DESC_RATE12M,
 395         .maps[RTL_RC_OFDM_RATE18M] = DESC_RATE18M,
 396         .maps[RTL_RC_OFDM_RATE24M] = DESC_RATE24M,
 397         .maps[RTL_RC_OFDM_RATE36M] = DESC_RATE36M,
 398         .maps[RTL_RC_OFDM_RATE48M] = DESC_RATE48M,
 399         .maps[RTL_RC_OFDM_RATE54M] = DESC_RATE54M,
 400
 401         .maps[RTL_RC_HT_RATEMCS7] = DESC_RATEMCS7,
 402         .maps[RTL_RC_HT_RATEMCS15] = DESC_RATEMCS15,
 403 };
 404
 405 static struct pci_device_id rtl92se_pci_ids[] = {
 406         {RTL_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8192, rtl92se_hal_cfg)},
 407         {RTL_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8171, rtl92se_hal_cfg)},
 408         {RTL_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8172, rtl92se_hal_cfg)},
 409         {RTL_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8173, rtl92se_hal_cfg)},
 410         {RTL_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8174, rtl92se_hal_cfg)},
 411         {},
 412 };
 413
 414 MODULE_DEVICE_TABLE(pci, rtl92se_pci_ids);
 415
 416 MODULE_AUTHOR("lizhaoming       <chaoming_li@realsil.com.cn>");
 417 MODULE_AUTHOR("Realtek WlanFAE  <wlanfae@realtek.com>");
 418 MODULE_AUTHOR("Larry Finger     <Larry.Finger@lwfinger.net>");
 419 MODULE_LICENSE("GPL");
 420 MODULE_DESCRIPTION("Realtek 8192S/8191S 802.11n PCI wireless");
 421 MODULE_FIRMWARE("rtlwifi/rtl8192sefw.bin");
 422
 423 module_param_named(swenc, rtl92se_mod_params.sw_crypto, bool, 0444);
 424 module_param_named(debug, rtl92se_mod_params.debug, int, 0444);
 425 module_param_named(ips, rtl92se_mod_params.inactiveps, bool, 0444);
 426 module_param_named(swlps, rtl92se_mod_params.swctrl_lps, bool, 0444);
 427 module_param_named(fwlps, rtl92se_mod_params.fwctrl_lps, bool, 0444);
 428 MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
 429 MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
 430 MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 1)\n");
 431 MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 0)\n");
 432 MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
 433
 434 static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
 435
 436 static struct pci_driver rtl92se_driver = {
 437         .name = KBUILD_MODNAME,
 438         .id_table = rtl92se_pci_ids,
 439         .probe = rtl_pci_probe,
 440         .remove = rtl_pci_disconnect,
 441         .driver.pm = &rtlwifi_pm_ops,
 442 };
 443
 444 module_pci_driver(rtl92se_driver);