kernel/drivers/staging/rtl8192e/rtl8192e/rtl_pci.c

   1 /******************************************************************************
   2  * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
   3  *
   4  * Based on the r8180 driver, which is:
   5  * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of version 2 of the GNU General Public License as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * The full GNU General Public License is included in this distribution in the
  16  * file called LICENSE.
  17  *
  18  * Contact Information:
  19  * wlanfae <wlanfae@realtek.com>
  20  *****************************************************************************/
  21 #include "rtl_pci.h"
  22 #include "rtl_core.h"
  23
  24 static void _rtl92e_parse_pci_configuration(struct pci_dev *pdev,
  25                                             struct net_device *dev)
  26 {
  27         struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
  28
  29         u8 tmp;
  30         u16 LinkCtrlReg;
  31
  32         pcie_capability_read_word(priv->pdev, PCI_EXP_LNKCTL, &LinkCtrlReg);
  33
  34         RT_TRACE(COMP_INIT, "Link Control Register =%x\n", LinkCtrlReg);
  35
  36         pci_read_config_byte(pdev, 0x98, &tmp);
  37         tmp |= BIT4;
  38         pci_write_config_byte(pdev, 0x98, tmp);
  39
  40         tmp = 0x17;
  41         pci_write_config_byte(pdev, 0x70f, tmp);
  42 }
  43
  44 bool rtl92e_check_adapter(struct pci_dev *pdev, struct net_device *dev)
  45 {
  46         struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
  47         u16 VenderID;
  48         u16 DeviceID;
  49         u8  RevisionID;
  50         u16 IrqLine;
  51
  52         VenderID = pdev->vendor;
  53         DeviceID = pdev->device;
  54         RevisionID = pdev->revision;
  55         pci_read_config_word(pdev, 0x3C, &IrqLine);
  56
  57         priv->card_8192 = priv->ops->nic_type;
  58
  59         if (DeviceID == 0x8192) {
  60                 switch (RevisionID) {
  61                 case HAL_HW_PCI_REVISION_ID_8192PCIE:
  62                         dev_info(&pdev->dev,
  63                                  "Adapter(8192 PCI-E) is found - DeviceID=%x\n",
  64                                  DeviceID);
  65                         priv->card_8192 = NIC_8192E;
  66                         break;
  67                 case HAL_HW_PCI_REVISION_ID_8192SE:
  68                         dev_info(&pdev->dev,
  69                                  "Adapter(8192SE) is found - DeviceID=%x\n",
  70                                  DeviceID);
  71                         priv->card_8192 = NIC_8192SE;
  72                         break;
  73                 default:
  74                         dev_info(&pdev->dev,
  75                                  "UNKNOWN nic type(%4x:%4x)\n",
  76                                  pdev->vendor, pdev->device);
  77                         priv->card_8192 = NIC_UNKNOWN;
  78                         return false;
  79                 }
  80         }
  81
  82         if (priv->ops->nic_type != priv->card_8192) {
  83                 dev_info(&pdev->dev,
  84                          "Detect info(%x) and hardware info(%x) not match!\n",
  85                          priv->ops->nic_type, priv->card_8192);
  86                 dev_info(&pdev->dev,
  87                          "Please select proper driver before install!!!!\n");
  88                 return false;
  89         }
  90
  91         _rtl92e_parse_pci_configuration(pdev, dev);
  92
  93         return true;
  94 }