ks_config.c

MICREL 网卡驱动 FOR CE 5.0

/*---------------------------------------------------------------------------
          Copyright (c) 2004-2006 Micrel, Inc.  All rights reserved.
  ---------------------------------------------------------------------------

  ks_config.c - KS884X switch configuration functions.

  Author  Date      Version  Description
  PCD     03/17/06  1.0.0    took out workaround (disable DMA flow control when link is half duplex mode)
                             for "KS8841/2/P can't release backpressue". A4 device fix this problem.
  THa     02/28/06           Do not use HW_WRITE_BYTE because of limitation of
                             some hardware platforms.
  THa     02/23/06           Removed KS884X_HW conditional.
  PCD     11/14/05  0.2.1    enable (1) Aggressive back off algorithm,
                             (2).No excessive collision drop.
                             (3).Flow control. (4).Back pressure
  PCD     10/20/05  0.2.0    incorrect register offset in SwitchSetAddress().
  THa     10/06/05           Disable flow control if half-duplex mode.
  THa     07/07/05           Added auto fast aging.
  THa     05/10/05           Updated file.
  THa     10/14/04           Updated with latest specs.
  THa     09/30/04           Updated for PCI version.
  THa     02/13/04           Created file.
  ---------------------------------------------------------------------------
*/


#include "target.h"
#include "hardware.h"


#if 1
#define LINK_CHECK_FIX
#endif


/* -------------------------------------------------------------------------- */

#ifdef KS_ISA_BUS
ULONG SwapBytes (
    ULONG dwData )
{
    ULONG  dwValue;
    PUCHAR pSrc = ( PUCHAR ) &dwData;
    PUCHAR pDst = ( PUCHAR ) &dwValue;

    pDst[ 0 ] = pSrc[ 3 ];
    pDst[ 1 ] = pSrc[ 2 ];
    pDst[ 2 ] = pSrc[ 1 ];
    pDst[ 3 ] = pSrc[ 0 ];
    return( dwValue );
}  /* SwapBytes */
#endif

/* -------------------------------------------------------------------------- */

/*
    PortConfigGet

    Description:
        This function checks whether the specified bits of the port register
        are set or not.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        UCHAR bBank
            The bank of the port register.

        UCHAR bOffset
            The offset of the port register.

        UCHAR bBits
        ULONG ulBits
            The data bits to check.

    Return (BOOLEAN):
        TRUE if the bits are set; otherwise FALSE.
*/

#ifdef KS_PCI_BUS
BOOLEAN PortConfigGet_PCI (
#else
BOOLEAN PortConfigGet_ISA (
#endif
    PHARDWARE pHardware,
    UCHAR     bPort,

#ifdef KS_ISA_BUS
    UCHAR     bBank,
#endif
    UCHAR     bOffset,
    UCHAR     bBits )
{
    UCHAR bData;

#ifdef KS_PCI_BUS
    ULONG ulAddr;

    PORT_CTRL_ADDR( bPort, ulAddr );
    ulAddr += bOffset;
    HW_READ_BYTE( pHardware, ulAddr, &bData );

#else
    HardwareSelectBank( pHardware, ( UCHAR )( bBank + bPort *
        PORT_BANK_INTERVAL ));
    HW_READ_BYTE( pHardware, bOffset, &bData );
#endif
    if ( ( bData & bBits ) == bBits )
        return TRUE;
    else
        return FALSE;
}  /* PortConfigGet */


/*
    PortConfigSet

    Description:
        This routine sets or resets the specified bits of the port register.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        UCHAR bBank
            The bank of the port register.

        UCHAR bOffset
            The offset of the port register.

        UCHAR bBits
        ULONG ulBits
            The data bits to set.

        BOOLEAN fSet
            The flag indicating whether the bits are to be set or not.

    Return (None):
*/

#ifdef KS_PCI_BUS
void PortConfigSet_PCI (
#else
void PortConfigSet_ISA (
#endif
    PHARDWARE pHardware,
    UCHAR     bPort,

#ifdef KS_ISA_BUS
    UCHAR     bBank,
#endif
    UCHAR     bOffset,

#ifdef SH_16BIT_WRITE
    USHORT    bBits,

#else
    UCHAR     bBits,
#endif
    BOOLEAN   fSet )
{
#ifdef KS_PCI_BUS
    ULONG ulAddr;
    UCHAR bData;

    PORT_CTRL_ADDR( bPort, ulAddr );
    ulAddr += bOffset;
    HW_READ_BYTE( pHardware, ulAddr, &bData );
    if ( fSet )
        bData |= bBits;
    else
        bData &= ~bBits;
    HW_WRITE_BYTE( pHardware, ulAddr, bData );

#else
#ifdef SH_16BIT_WRITE
    USHORT RegData;
    UCHAR  bShift = bOffset & 1;

    bOffset &= ~1;
    bBits <<= ( bShift << 3 );
    HardwareSelectBank( pHardware, ( UCHAR )( bBank + bPort *
        PORT_BANK_INTERVAL ));
    HW_READ_WORD( pHardware, bOffset, &RegData );
    if ( fSet )
        RegData |= bBits;
    else
        RegData &= ~bBits;
    HW_WRITE_WORD( pHardware, bOffset, RegData );

#else
    UCHAR bData;

    HardwareSelectBank( pHardware, ( UCHAR )( bBank + bPort *
        PORT_BANK_INTERVAL ));
    HW_READ_BYTE( pHardware, bOffset, &bData );
    if ( fSet )
        bData |= bBits;
    else
        bData &= ~bBits;
    HW_WRITE_BYTE( pHardware, bOffset, bData );
#endif
#endif
}  /* PortConfigSet */


#ifdef KS_PCI_BUS_
/*
    PortConfigGetShift

    Description:
        This function checks whether the specified bits of the port register
        are set or not.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        ULONG ulOffset
            The offset of the port register.

        UCHAR bShift
            Number of bits to shift.

    Return (BOOLEAN):
        TRUE if the bits are set; otherwise FALSE.
*/

BOOLEAN PortConfigGetShift (
    PHARDWARE pHardware,
    UCHAR     bPort,
    ULONG     ulOffset,
    UCHAR     bShift )
{
    ULONG ulData;
    ULONG ulBits = 1UL << bPort;

    HW_READ_DWORD( pHardware, ulOffset, &ulData );
    ulData >>= bShift;
    if ( ( ulData & ulBits ) == ulBits )
        return TRUE;
    else
        return FALSE;
}  /* PortConfigGetShift */


/*
    PortConfigSetShift

    Description:
        This routine sets or resets the specified bits of the port register.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        ULONG ulOffset
            The offset of the port register.

        UCHAR bShift
            Number of bits to shift.

        BOOLEAN fSet
            The flag indicating whether the bits are to be set or not.

    Return (None):
*/

void PortConfigSetShift (
    PHARDWARE pHardware,
    UCHAR     bPort,
    ULONG     ulOffset,
    UCHAR     bShift,
    BOOLEAN   fSet )
{
    ULONG ulData;
    ULONG ulBits = 1UL << bPort;

    HW_READ_DWORD( pHardware, ulOffset, &ulData );
    ulBits <<= bShift;
    if ( fSet )
        ulData |= ulBits;
    else
        ulData &= ~ulBits;
    HW_WRITE_DWORD( pHardware, ulOffset, ulData );
}  /* PortConfigSetShift */
#endif


/*
    PortConfigReadByte

    Description:
        This routine reads a byte from the port register.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        UCHAR bBank
            The bank of the port register.

        UCHAR bOffset
            The offset of the port register.

        PUCHAR pbData
            Buffer to store the data.

    Return (None):
*/

#ifdef KS_PCI_BUS
void PortConfigReadByte_PCI
#else
void PortConfigReadByte_ISA
#endif
(
    PHARDWARE pHardware,
    UCHAR     bPort,

#ifdef KS_ISA_BUS
    UCHAR     bBank,
#endif
    UCHAR     bOffset,
    PUCHAR    pbData )
{
#ifdef KS_PCI_BUS
    ULONG ulAddr;

    PORT_CTRL_ADDR( bPort, ulAddr );
    ulAddr += bOffset;
    HW_READ_BYTE( pHardware, ulAddr, pbData );

#else
    HardwareSelectBank( pHardware, ( UCHAR )( bBank + bPort *
        PORT_BANK_INTERVAL ));
    HW_READ_BYTE( pHardware, bOffset, pbData );
#endif
}  /* PortConfigReadByte */


/*
    PortConfigWriteByte

    Description:
        This routine writes a byte to the port register.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        UCHAR bBank
            The bank of the port register.

        UCHAR bOffset
            The offset of the port register.

        UCHAR bData
            Data to write.

    Return (None):
*/

#ifdef KS_PCI_BUS
void PortConfigWriteByte_PCI
#else
void PortConfigWriteByte_ISA
#endif
(
    PHARDWARE pHardware,
    UCHAR     bPort,

#ifdef KS_ISA_BUS
    UCHAR     bBank,
#endif
    UCHAR     bOffset,
    UCHAR     bData )
{
#ifdef KS_PCI_BUS
    ULONG ulAddr;

    PORT_CTRL_ADDR( bPort, ulAddr );
    ulAddr += bOffset;
    HW_WRITE_BYTE( pHardware, ulAddr, bData );

#else

#ifdef SH_16BIT_WRITE
    ASSERT( FALSE );
#endif
    HardwareSelectBank( pHardware, ( UCHAR )( bBank + bPort *
        PORT_BANK_INTERVAL ));
    HW_WRITE_BYTE( pHardware, bOffset, bData );
#endif
}  /* PortConfigWriteByte */


/*
    PortConfigReadWord

    Description:
        This routine reads a word from the port register.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        UCHAR bBank
            The bank of the port register.

        UCHAR bOffset
            The offset of the port register.

        PUSHORT pwData
            Buffer to store the data.

    Return (None):
*/

#ifdef KS_PCI_BUS
void PortConfigReadWord_PCI
#else
void PortConfigReadWord_ISA
#endif
(
    PHARDWARE pHardware,
    UCHAR     bPort,

#ifdef KS_ISA_BUS
    UCHAR     bBank,
#endif
    UCHAR     bOffset,
    PUSHORT   pwData )
{
#ifdef KS_PCI_BUS
    ULONG ulAddr;

    PORT_CTRL_ADDR( bPort, ulAddr );
    ulAddr += bOffset;
    HW_READ_WORD( pHardware, ulAddr, pwData );

#else
    HardwareSelectBank( pHardware, ( UCHAR )( bBank + bPort *
        PORT_BANK_INTERVAL ));
    HW_READ_WORD( pHardware, bOffset, pwData );
#endif
}  /* PortConfigReadWord */


/*
    PortConfigWriteWord

    Description:
        This routine writes a word to the port register.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bPort
            The port index.

        UCHAR bBank
            The bank of the port register.

        UCHAR bOffset
            The offset of the port register.

        USHORT usData
            Data to write.

    Return (None):
*/

#ifdef KS_PCI_BUS
void PortConfigWriteWord_PCI
#else
void PortConfigWriteWord_ISA
#endif
(
    PHARDWARE pHardware,
    UCHAR     bPort,

#ifdef KS_ISA_BUS
    UCHAR     bBank,
#endif
    UCHAR     bOffset,
    USHORT    usData )
{
#ifdef KS_PCI_BUS
    ULONG ulAddr;

    PORT_CTRL_ADDR( bPort, ulAddr );
    ulAddr += bOffset;
    HW_WRITE_WORD( pHardware, ulAddr, usData );

#else
    HardwareSelectBank( pHardware, ( UCHAR )( bBank + bPort *
        PORT_BANK_INTERVAL ));
    HW_WRITE_WORD( pHardware, bOffset, usData );
#endif
}  /* PortConfigWriteWord */

/* -------------------------------------------------------------------------- */

/*
    SwitchConfigGet

    Description:
        This function checks whether the specified bits of the switch register
        are set or not.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bOffset
        ULONG ulOffset
            The offset of the switch register.

        UCHAR bBits
        ULONG ulBits
            The data bits to check.

    Return (BOOLEAN):
        TRUE if the bits are set; otherwise FALSE.
*/

#ifdef KS_PCI_BUS
BOOLEAN SwitchConfigGet_PCI (
#else
BOOLEAN SwitchConfigGet_ISA (
#endif
    PHARDWARE pHardware,
    int       Offset,
    UCHAR     bBits )
{
    UCHAR bData;

#ifdef KS_ISA_BUS
    HardwareSelectBank( pHardware, REG_SWITCH_CTRL_BANK );
#endif
    HW_READ_BYTE( pHardware, Offset, &bData );
    if ( ( bData & bBits ) == bBits )
        return TRUE;
    else
        return FALSE;
}  /* SwitchConfigGet */


/*
    SwitchConfigSet

    Description:
        This function sets or resets the specified bits of the switch register.

    Parameters:
        PHARDWARE pHardware
            Pointer to hardware instance.

        UCHAR bOffset
        ULONG ulOffset
            The offset of the switch register.

        UCHAR bBits
        ULONG ulBits
            The data bits to check.

        BOOLEAN fSet
            The flag indicating whether the bits are to be set or not.

    Return (None):
*/

#ifdef KS_PCI_BUS
void SwitchConfigSet_PCI (
#else
void SwitchConfigSet_ISA (
#endif
    PHARDWARE pHardware,
    int       Offset,

#ifdef SH_16BIT_WRITE
    USHORT    bBits,

#else
    UCHAR     bBits,
#endif
    BOOLEAN   fSet )