windows-server-2003/base/busdrv/pccard/pcmcibus/o2m.c

/*++

Copyright (c) 1994 Microsoft Corporation

Module Name:

    o2m.c

Abstract:

    This module contains the code that contains
    O2 micro cardbus controller specific initialization and
    other dispatches

Author:

    Ravisankar Pudipeddi (ravisp) 1-Nov-97


Environment:

    Kernel mode

Revision History :


--*/

#include "pch.h"



VOID
O2MInitialize(
    IN PFDO_EXTENSION FdoExtension
    )
/*++

Routine Description:

     Initialize O2Micro controllers

Arguments:

     FdoExtension - Pointer to the device extension for the controller FDO

Return Value:

     None
--*/
{
    UCHAR byte;
    USHORT word;

    //
    // patch for o2micro controllers courtesy of Eric Still ([email protected])
    //
    byte = PcicReadSocket(FdoExtension->SocketList, 0x3a) | 0xa0;
    PcicWriteSocket(FdoExtension->SocketList, 0x3a, byte);

    //
    // initialize IRQ routing to ISA
    //

    GetPciConfigSpace(FdoExtension, CFGSPACE_BRIDGE_CTRL, &word, 2);
    word |= BCTRL_IRQROUTING_ENABLE;
    SetPciConfigSpace(FdoExtension, CFGSPACE_BRIDGE_CTRL, &word, 2);
}


NTSTATUS
O2MSetPower(
    IN PSOCKET Socket,
    IN BOOLEAN Enable,
    OUT PULONG pDelayTime
    )

/*++

Routine Description:

     Set power to the specified socket.

Arguments:

     SocketPtr - the socket to set
     Enable - TRUE means to set power - FALSE is to turn it off.
     pDelayTime - specifies delay (msec) to occur after the current phase

Return Value:

     STATUS_MORE_PROCESSING_REQUIRED - increment phase, perform delay, recall
     other status values terminate sequence

--*/

{
    NTSTATUS status;

    status = CBSetPower(Socket, Enable, pDelayTime);

    if (NT_SUCCESS(status) & Enable) {
        UCHAR byte;

        //
        // patch for o2micro controllers courtesy of Eric Still ([email protected])
        //
        byte = PcicReadSocket(Socket, 0x3a) | 0xa0;
        PcicWriteSocket(Socket, 0x3a, byte);
    }
    return status;
}


BOOLEAN
O2MSetZV(
    IN PSOCKET Socket,
    IN BOOLEAN Enable
    )
{
    ULONG oldValue;

    if (Enable) {
        oldValue = CBReadSocketRegister(Socket, CBREG_O2MICRO_ZVCTRL);
        oldValue |= ZVCTRL_ZV_ENABLE;
        CBWriteSocketRegister(Socket, CBREG_O2MICRO_ZVCTRL, oldValue);
    } else {
        oldValue = CBReadSocketRegister(Socket, CBREG_O2MICRO_ZVCTRL);
        oldValue &= ~ZVCTRL_ZV_ENABLE;
        CBWriteSocketRegister(Socket, CBREG_O2MICRO_ZVCTRL, oldValue);
    }

    return TRUE;
}