www.pudn.com > PlxSdk.rar > PlxChipFn.c

/*******************************************************************************
 * Copyright (c) 2007 PLX Technology, Inc.
 *
 * PLX Technology Inc. licenses this software under specific terms and
 * conditions.  Use of any of the software or derviatives thereof in any
 * product without a PLX Technology chip is strictly prohibited.
 *
 * PLX Technology, Inc. provides this software AS IS, WITHOUT ANY WARRANTY,
 * EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  PLX makes no guarantee
 * or representations regarding the use of, or the results of the use of,
 * the software and documentation in terms of correctness, accuracy,
 * reliability, currentness, or otherwise; and you rely on the software,
 * documentation and results solely at your own risk.
 *
 * IN NO EVENT SHALL PLX BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS,
 * LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES
 * OF ANY KIND.  IN NO EVENT SHALL PLX'S TOTAL LIABILITY EXCEED THE SUM
 * PAID TO PLX FOR THE PRODUCT LICENSED HEREUNDER.
 *
 ******************************************************************************/

/******************************************************************************
 *
 * File Name:
 *
 *      PlxChipFn.c
 *
 * Description:
 *
 *      Contains PLX chip-specific support functions
 *
 * Revision History:
 *
 *      02-01-07 : PLX SDK v5.00
 *
 ******************************************************************************/


#include "DriverDefs.h"
#include "PciSupport.h"
#include "PlxInterrupt.h"
#include "SupportFunc.h"




/******************************************************************************
 *
 * Function   :  PlxChipInterruptsEnable
 *
 * Description:  Globally enables PLX chip interrupts
 *
 *****************************************************************************/
BOOLEAN
PlxChipInterruptsEnable(
    DEVICE_EXTENSION *pdx
    )
{
    U32 RegValue;


    // Enable upstream doorbell interrupts
    PLX_PCI_REG_READ(
        pdx,
        0xc4,
        &RegValue
        );

    RegValue |= 0xFFFF;

    PLX_PCI_REG_WRITE(
        pdx,
        0xc4,
        RegValue
        );

    // Enable Message, S_RSTIN, S_PME, & GPIO interrupts
    PLX_PCI_REG_WRITE(
        pdx,
        0xc8,
        0xFF000000
        );

    return TRUE;
}




/******************************************************************************
 *
 * Function   :  PlxChipInterruptsDisable
 *
 * Description:  Globally disables PLX chip interrupts
 *
 *****************************************************************************/
BOOLEAN
PlxChipInterruptsDisable(
    DEVICE_EXTENSION *pdx
    )
{
    U32 RegValue;


    // Disable upstream doorbell interrupts
    PLX_PCI_REG_READ(
        pdx,
        0xc4,
        &RegValue
        );

    RegValue &= ~0xFFFF;

    PLX_PCI_REG_WRITE(
        pdx,
        0xc4,
        RegValue
        );

    // Disable Message, S_RSTIN, S_PME, & GPIO interrupts
    PLX_PCI_REG_WRITE(
        pdx,
        0xc8,
        0x00000000
        );

    return TRUE;
}