rtl_pci.c

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/******************************************************************************
 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
 *
 * Based on the r8180 driver, which is:
 * Copyright 2004-2005 Andrea Merello <[email protected]>, et al.
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <[email protected]>
 *****************************************************************************/
#include "rtl_pci.h"
#include "rtl_core.h"

static void rtl8192_parse_pci_configuration(struct pci_dev *pdev,
                        struct net_device *dev)
{
    struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);

    u8 tmp;
    u16 LinkCtrlReg;

    pcie_capability_read_word(priv->pdev, PCI_EXP_LNKCTL, &LinkCtrlReg);
    priv->NdisAdapter.LinkCtrlReg = (u8)LinkCtrlReg;

    RT_TRACE(COMP_INIT, "Link Control Register =%x\n",
         priv->NdisAdapter.LinkCtrlReg);

    pci_read_config_byte(pdev, 0x98, &tmp);
    tmp |= BIT4;
    pci_write_config_byte(pdev, 0x98, tmp);

    tmp = 0x17;
    pci_write_config_byte(pdev, 0x70f, tmp);
}

bool rtl8192_pci_findadapter(struct pci_dev *pdev, struct net_device *dev)
{
    struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
    u16 VenderID;
    u16 DeviceID;
    u8  RevisionID;
    u16 IrqLine;

    VenderID = pdev->vendor;
    DeviceID = pdev->device;
    RevisionID = pdev->revision;
    pci_read_config_word(pdev, 0x3C, &IrqLine);

    priv->card_8192 = priv->ops->nic_type;

    if (DeviceID == 0x8172) {
        switch (RevisionID) {
        case HAL_HW_PCI_REVISION_ID_8192PCIE:
            printk(KERN_INFO "Adapter(8192 PCI-E) is found - "
                   "DeviceID=%x\n", DeviceID);
            priv->card_8192 = NIC_8192E;
            break;
        case HAL_HW_PCI_REVISION_ID_8192SE:
            printk(KERN_INFO "Adapter(8192SE) is found - "
                   "DeviceID=%x\n", DeviceID);
            priv->card_8192 = NIC_8192SE;
            break;
        default:
            printk(KERN_INFO "UNKNOWN nic type(%4x:%4x)\n",
                   pdev->vendor, pdev->device);
            priv->card_8192 = NIC_UNKNOWN;
            return false;
        }
    }

    if (priv->ops->nic_type != priv->card_8192) {
        printk(KERN_INFO "Detect info(%x) and hardware info(%x) not match!\n",
                priv->ops->nic_type, priv->card_8192);
        printk(KERN_INFO "Please select proper driver before install!!!!\n");
        return false;
    }

    rtl8192_parse_pci_configuration(pdev, dev);

    return true;
}