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  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  18  *
  19  * The full GNU General Public License is included in this distribution in the
  20  * file called LICENSE.
  21  *
  22  * Contact Information:
  23  * wlanfae <wlanfae@realtek.com>
  24  *****************************************************************************/
  25 #include "rtl_pci.h"
  26 #include "rtl_core.h"
  27
  28 static void rtl8192_parse_pci_configuration(struct pci_dev *pdev,
  29                                             struct net_device *dev)
  30 {
  31         struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
  32
  33         u8 tmp;
  34         u16 LinkCtrlReg;
  35
  36         pcie_capability_read_word(priv->pdev, PCI_EXP_LNKCTL, &LinkCtrlReg);
  37         priv->NdisAdapter.LinkCtrlReg = (u8)LinkCtrlReg;
  38
  39         RT_TRACE(COMP_INIT, "Link Control Register =%x\n",
  40                  priv->NdisAdapter.LinkCtrlReg);
  41
  42         pci_read_config_byte(pdev, 0x98, &tmp);
  43         tmp |= BIT4;
  44         pci_write_config_byte(pdev, 0x98, tmp);
  45
  46         tmp = 0x17;
  47         pci_write_config_byte(pdev, 0x70f, tmp);
  48 }
  49
  50 bool rtl8192_pci_findadapter(struct pci_dev *pdev, struct net_device *dev)
  51 {
  52         struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
  53         u16 VenderID;
  54         u16 DeviceID;
  55         u8  RevisionID;
  56         u16 IrqLine;
  57
  58         VenderID = pdev->vendor;
  59         DeviceID = pdev->device;
  60         RevisionID = pdev->revision;
  61         pci_read_config_word(pdev, 0x3C, &IrqLine);
  62
  63         priv->card_8192 = priv->ops->nic_type;
  64
  65         if (DeviceID == 0x8172) {
  66                 switch (RevisionID) {
  67                 case HAL_HW_PCI_REVISION_ID_8192PCIE:
  68                         dev_info(&pdev->dev,
  69                                  "Adapter(8192 PCI-E) is found - DeviceID=%x\n",
  70                                  DeviceID);
  71                         priv->card_8192 = NIC_8192E;
  72                         break;
  73                 case HAL_HW_PCI_REVISION_ID_8192SE:
  74                         dev_info(&pdev->dev,
  75                                  "Adapter(8192SE) is found - DeviceID=%x\n",
  76                                  DeviceID);
  77                         priv->card_8192 = NIC_8192SE;
  78                         break;
  79                 default:
  80                         dev_info(&pdev->dev,
  81                                  "UNKNOWN nic type(%4x:%4x)\n",
  82                                  pdev->vendor, pdev->device);
  83                         priv->card_8192 = NIC_UNKNOWN;
  84                         return false;
  85                 }
  86         }
  87
  88         if (priv->ops->nic_type != priv->card_8192) {
  89                 dev_info(&pdev->dev,
  90                          "Detect info(%x) and hardware info(%x) not match!\n",
  91                          priv->ops->nic_type, priv->card_8192);
  92                 dev_info(&pdev->dev,
  93                          "Please select proper driver before install!!!!\n");
  94                 return false;
  95         }
  96
  97         rtl8192_parse_pci_configuration(pdev, dev);
  98
  99         return true;
 100 }