mac.c

VIA VT6655 x86下的Linux Source Code

/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * This software is copyrighted by and is the sole property of
 * VIA Networking Technologies, Inc. This software may only be used
 * in accordance with the corresponding license agreement. Any unauthorized
 * use, duplication, transmission, distribution, or disclosure of this
 * software is expressly forbidden.
 *
 * This software is provided by VIA Networking Technologies, Inc. "as is"
 * and any express or implied warranties, including, but not limited to, the
 * implied warranties of merchantability and fitness for a particular purpose
 * are disclaimed. In no event shall VIA Networking Technologies, Inc.
 * be liable for any direct, indirect, incidental, special, exemplary, or
 * consequential damages. 
 *
 * File: mac.c
 *
 * Purpose:  MAC routines
 *
 * Author: Tevin Chen
 *
 * Date: May 21, 1996
 *
 * Functions:
 *      MACvReadAllRegs - Read All MAC Registers to buffer
 *      MACbIsRegBitsOn - Test if All test Bits On 
 *      MACbIsRegBitsOff - Test if All test Bits Off
 *      MACbIsIntDisable - Test if MAC interrupt disable
 *      MACbyReadMultiAddr - Read Multicast Address Mask Pattern
 *      MACvWriteMultiAddr - Write Multicast Address Mask Pattern
 *      MACvSetMultiAddrByHash - Set Multicast Address Mask by Hash value
 *      MACvResetMultiAddrByHash - Clear Multicast Address Mask by Hash value
 *      MACvSetRxThreshold - Set Rx Threshold value
 *      MACvGetRxThreshold - Get Rx Threshold value
 *      MACvSetTxThreshold - Set Tx Threshold value
 *      MACvGetTxThreshold - Get Tx Threshold value
 *      MACvSetDmaLength - Set Dma Length value
 *      MACvGetDmaLength - Get Dma Length value
 *      MACvSetShortRetryLimit - Set 802.11 Short Retry limit
 *      MACvGetShortRetryLimit - Get 802.11 Short Retry limit
 *      MACvSetLongRetryLimit - Set 802.11 Long Retry limit
 *      MACvGetLongRetryLimit - Get 802.11 Long Retry limit
 *      MACvSetLoopbackMode - Set MAC Loopback Mode
 *      MACbIsInLoopbackMode - Test if MAC in Loopback mode
 *      MACvSetPacketFilter - Set MAC Address Filter
 *      MACvSaveContext - Save Context of MAC Registers
 *      MACvRestoreContext - Restore Context of MAC Registers
 *      MACbCompareContext - Compare if values of MAC Registers same as Context
 *      MACbSoftwareReset - Software Reset MAC
 *      MACbSafeRxOff - Turn Off MAC Rx
 *      MACbSafeTxOff - Turn Off MAC Tx
 *      MACbSafeStop - Stop MAC function
 *      MACbShutdown - Shut down MAC
 *      MACvInitialize - Initialize MAC
 *      MACvSetCurrRxDescAddr - Set Rx Descriptos Address
 *      MACvSetCurrTx0DescAddr - Set Tx0 Descriptos Address
 *      MACvSetCurrTx1DescAddr - Set Tx1 Descriptos Address
 *      MACvTimer0MicroSDelay - Micro Second Delay Loop by MAC
 *
 * Revision History:
 *      08-22-2003 Kyle Hsu     :  Porting MAC functions from sim53
 *      09-03-2003 Bryan YC Fan :  Add MACvClearBusSusInd()& MACvEnableBusSusEn()
 *      09-18-2003 Jerry Chen   :  Add MACvSetKeyEntry & MACvDisableKeyEntry 
 *
 */

#if !defined(__TMACRO_H__)
#include "tmacro.h"
#endif
#if !defined(__TBIT_H__)
#include "tbit.h"
#endif
#if !defined(__TETHER_H__)
#include "tether.h"
#endif
#if !defined(__MAC_H__)
#include "mac.h"
#endif



/*---------------------  Static Definitions -------------------------*/
//static int          msglevel                =MSG_LEVEL_DEBUG;
static int          msglevel                =MSG_LEVEL_INFO;
/*---------------------  Static Classes  ----------------------------*/

/*---------------------  Static Variables  --------------------------*/

/*---------------------  Static Functions  --------------------------*/

/*---------------------  Export Variables  --------------------------*/

/*---------------------  Export Functions  --------------------------*/

/*
 * Description:
 *      Read All MAC Registers to buffer
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *  Out:
 *      pbyMacRegs  - buffer to read
 *
 * Return Value: none
 *
 */
VOID MACvReadAllRegs (DWORD_PTR dwIoBase, PBYTE pbyMacRegs)
{
    int ii;

    // read page0 register
    for (ii = 0; ii < MAC_MAX_CONTEXT_SIZE_PAGE0; ii++) {
        VNSvInPortB(dwIoBase + ii, pbyMacRegs);
        pbyMacRegs++;
    }

    MACvSelectPage1(dwIoBase);

    // read page1 register
    for (ii = 0; ii < MAC_MAX_CONTEXT_SIZE_PAGE1; ii++) {
        VNSvInPortB(dwIoBase + ii, pbyMacRegs);
        pbyMacRegs++;
    }

    MACvSelectPage0(dwIoBase);

}

/*
 * Description:
 *      Test if all test bits on
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byRegOfs    - Offset of MAC Register
 *      byTestBits  - Test bits
 *  Out:
 *      none
 *
 * Return Value: TRUE if all test bits On; otherwise FALSE
 *
 */
BOOL MACbIsRegBitsOn (DWORD_PTR dwIoBase, BYTE byRegOfs, BYTE byTestBits)
{
    BYTE byData;

    VNSvInPortB(dwIoBase + byRegOfs, &byData);
    return BITbIsAllBitsOn(byData, byTestBits);
}

/*
 * Description:
 *      Test if all test bits off
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byRegOfs    - Offset of MAC Register
 *      byTestBits  - Test bits
 *  Out:
 *      none
 *
 * Return Value: TRUE if all test bits Off; otherwise FALSE
 *
 */
BOOL MACbIsRegBitsOff (DWORD_PTR dwIoBase, BYTE byRegOfs, BYTE byTestBits)
{
    BYTE byData;

    VNSvInPortB(dwIoBase + byRegOfs, &byData);
    return BITbIsAllBitsOff(byData, byTestBits);
}

/*
 * Description:
 *      Test if MAC interrupt disable
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: TRUE if interrupt is disable; otherwise FALSE
 *
 */
BOOL MACbIsIntDisable (DWORD_PTR dwIoBase)
{
    DWORD dwData;

    VNSvInPortD(dwIoBase + MAC_REG_IMR, &dwData);
    if (dwData != 0)
        return FALSE;

    return TRUE;
}

/*
 * Description:
 *      Read MAC Multicast Address Mask
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      uByteidx    - Index of Mask
 *  Out:
 *      none
 *
 * Return Value: Mask Value read
 *
 */
BYTE MACbyReadMultiAddr (DWORD_PTR dwIoBase, UINT uByteIdx)
{
    BYTE byData;

    MACvSelectPage1(dwIoBase);
    VNSvInPortB(dwIoBase + MAC_REG_MAR0 + uByteIdx, &byData);
    MACvSelectPage0(dwIoBase);
    return byData;
}

/*
 * Description:
 *      Write MAC Multicast Address Mask
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      uByteidx    - Index of Mask
 *      byData      - Mask Value to write
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
VOID MACvWriteMultiAddr (DWORD_PTR dwIoBase, UINT uByteIdx, BYTE byData)
{
    MACvSelectPage1(dwIoBase);
    VNSvOutPortB(dwIoBase + MAC_REG_MAR0 + uByteIdx, byData);
    MACvSelectPage0(dwIoBase);
}

/*
 * Description:
 *      Set this hash index into multicast address register bit
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byHashIdx   - Hash index to set
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetMultiAddrByHash (DWORD_PTR dwIoBase, BYTE byHashIdx)
{
    UINT uByteIdx;
    BYTE byBitMask;
    BYTE byOrgValue;

    // calculate byte position
    uByteIdx = byHashIdx / 8;
    ASSERT(uByteIdx < 8);
    // calculate bit position
    byBitMask = 1;
    byBitMask <<= (byHashIdx % 8);
    // turn on the bit
    byOrgValue = MACbyReadMultiAddr(dwIoBase, uByteIdx);
    MACvWriteMultiAddr(dwIoBase, uByteIdx, (BYTE)(byOrgValue | byBitMask));
}

/*
 * Description:
 *      Reset this hash index into multicast address register bit
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byHashIdx   - Hash index to clear
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvResetMultiAddrByHash (DWORD_PTR dwIoBase, BYTE byHashIdx)
{
    UINT uByteIdx;
    BYTE byBitMask;
    BYTE byOrgValue;

    // calculate byte position
    uByteIdx = byHashIdx / 8;
    ASSERT(uByteIdx < 8);
    // calculate bit position
    byBitMask = 1;
    byBitMask <<= (byHashIdx % 8);
    // turn off the bit
    byOrgValue = MACbyReadMultiAddr(dwIoBase, uByteIdx);
    MACvWriteMultiAddr(dwIoBase, uByteIdx, (BYTE)(byOrgValue & (~byBitMask)));
}

/*
 * Description:
 *      Set Rx Threshold
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byThreshold - Threshold Value
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetRxThreshold (DWORD_PTR dwIoBase, BYTE byThreshold)
{
    BYTE byOrgValue;

    ASSERT(byThreshold < 4);

    // set FCR0
    VNSvInPortB(dwIoBase + MAC_REG_FCR0, &byOrgValue);
    byOrgValue = (byOrgValue & 0xCF) | (byThreshold << 4);
    VNSvOutPortB(dwIoBase + MAC_REG_FCR0, byOrgValue);
}

/*
 * Description:
 *      Get Rx Threshold
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *  Out:
 *      pbyThreshold- Threshold Value Get
 *
 * Return Value: none
 *
 */
void MACvGetRxThreshold (DWORD_PTR dwIoBase, PBYTE pbyThreshold)
{
    // get FCR0
    VNSvInPortB(dwIoBase + MAC_REG_FCR0, pbyThreshold);
    *pbyThreshold = (*pbyThreshold >> 4) & 0x03;
}

/*
 * Description:
 *      Set Tx Threshold
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byThreshold - Threshold Value
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetTxThreshold (DWORD_PTR dwIoBase, BYTE byThreshold)
{
    BYTE byOrgValue;

    ASSERT(byThreshold < 4);

    // set FCR0
    VNSvInPortB(dwIoBase + MAC_REG_FCR0, &byOrgValue);
    byOrgValue = (byOrgValue & 0xF3) | (byThreshold << 2);
    VNSvOutPortB(dwIoBase + MAC_REG_FCR0, byOrgValue);
}

/*
 * Description:
 *      Get Tx Threshold
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *  Out:
 *      pbyThreshold- Threshold Value Get
 *
 * Return Value: none
 *
 */
void MACvGetTxThreshold (DWORD_PTR dwIoBase, PBYTE pbyThreshold)
{
    // get FCR0
    VNSvInPortB(dwIoBase + MAC_REG_FCR0, pbyThreshold);
    *pbyThreshold = (*pbyThreshold >> 2) & 0x03;
}

/*
 * Description:
 *      Set Dma Length
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byDmaLength - Dma Length Value
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetDmaLength (DWORD_PTR dwIoBase, BYTE byDmaLength)
{
    BYTE byOrgValue;

    ASSERT(byDmaLength < 4);

    // set FCR0
    VNSvInPortB(dwIoBase + MAC_REG_FCR0, &byOrgValue);
    byOrgValue = (byOrgValue & 0xFC) | byDmaLength;
    VNSvOutPortB(dwIoBase + MAC_REG_FCR0, byOrgValue);
}

/*
 * Description:
 *      Get Dma Length
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *  Out:
 *      pbyDmaLength- Dma Length Value Get
 *
 * Return Value: none
 *
 */
void MACvGetDmaLength (DWORD_PTR dwIoBase, PBYTE pbyDmaLength)
{
    // get FCR0
    VNSvInPortB(dwIoBase + MAC_REG_FCR0, pbyDmaLength);
    *pbyDmaLength &= 0x03;
}

/*
 * Description:
 *      Set 802.11 Short Retry Limit
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byRetryLimit- Retry Limit
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetShortRetryLimit (DWORD_PTR dwIoBase, BYTE byRetryLimit)
{
    // set SRT
    VNSvOutPortB(dwIoBase + MAC_REG_SRT, byRetryLimit);
}

/*
 * Description:
 *      Get 802.11 Short Retry Limit
 *
 * Parameters:
 *  In:
 *      dwIoBase        - Base Address for MAC
 *  Out:
 *      pbyRetryLimit   - Retry Limit Get
 *
 * Return Value: none
 *
 */
void MACvGetShortRetryLimit (DWORD_PTR dwIoBase, PBYTE pbyRetryLimit)
{
    // get SRT
    VNSvInPortB(dwIoBase + MAC_REG_SRT, pbyRetryLimit);
}

/*
 * Description:
 *      Set 802.11 Long Retry Limit
 *
 * Parameters:
 *  In:
 *      dwIoBase    - Base Address for MAC
 *      byRetryLimit- Retry Limit
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetLongRetryLimit (DWORD_PTR dwIoBase, BYTE byRetryLimit)
{
    // set LRT
    VNSvOutPortB(dwIoBase + MAC_REG_LRT, byRetryLimit);
}

/*
 * Description:
 *      Get 802.11 Long Retry Limit
 *
 * Parameters:
 *  In:
 *      dwIoBase        - Base Address for MAC
 *  Out:
 *      pbyRetryLimit   - Retry Limit Get
 *
 * Return Value: none
 *
 */
void MACvGetLongRetryLimit (DWORD_PTR dwIoBase, PBYTE pbyRetryLimit)
{
    // get LRT
    VNSvInPortB(dwIoBase + MAC_REG_LRT, pbyRetryLimit);
}

/*
 * Description:
 *      Set MAC Loopback mode
 *
 * Parameters:
 *  In:
 *      dwIoBase        - Base Address for MAC
 *      byLoopbackMode  - Loopback Mode
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetLoopbackMode (DWORD_PTR dwIoBase, BYTE byLoopbackMode)
{
    BYTE byOrgValue;

    ASSERT(byLoopbackMode < 3);
    byLoopbackMode <<= 6;
    // set TCR
    VNSvInPortB(dwIoBase + MAC_REG_TEST, &byOrgValue);
    byOrgValue = byOrgValue & 0x3F;
    byOrgValue = byOrgValue | byLoopbackMode;
    VNSvOutPortB(dwIoBase + MAC_REG_TEST, byOrgValue);
}

/*
 * Description:
 *      Test if MAC in Loopback mode
 *
 * Parameters:
 *  In:
 *      dwIoBase        - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: TRUE if in Loopback mode; otherwise FALSE
 *
 */
BOOL MACbIsInLoopbackMode (DWORD_PTR dwIoBase)
{
    BYTE byOrgValue;

    VNSvInPortB(dwIoBase + MAC_REG_TEST, &byOrgValue);
    if (BITbIsAnyBitsOn(byOrgValue, (TEST_LBINT | TEST_LBEXT)))
        return TRUE;
    return FALSE;
}

/*
 * Description:
 *      Set MAC Address filter
 *
 * Parameters:
 *  In:
 *      dwIoBase        - Base Address for MAC
 *      wFilterType     - Filter Type
 *  Out: