swmpmtb.c

vt6528芯片交换机API函数和文档运行程序

/*
 * 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:    swmpmtb.c
 *
 * Purpose: multicast port mask table operation functions
 *
 * Author:  Wango Wei
 *          Henry Lin
 *
 * Date:    March 24, 2005
 *          May 2, 2005
 *
 * Functions:
 *
 * Revision History:
 *
 */


#if !defined(__STR_H__)
#include "str.h"
#endif
#if !defined(__SWITCH_H__)
#include "switch.h"
#endif
#if !defined(__SWMPMTB_H__)
#include "swmpmtb.h"
#endif
#if !defined(__SWSRAM_H__)
#include "swsram.h"
#endif


/*---------------------  Static Definitions  ------------------------*/
/*---------------------  Static Types  ------------------------------*/
/*---------------------  Static Macros  -----------------------------*/
#define MPM_INDEX_TO_SA(indx)      (SRAM_PTMSK_TBL_BASE_ADDR +  (indx<<SHIFT_NUM_SIZE_4Byte))
/*---------------------  Static Classes  ----------------------------*/
/*---------------------  Static Variables  --------------------------*/
/*---------------------  Static Functions  --------------------------*/
/*---------------------  Export Variables  --------------------------*/




BOOL SWMPMTB_bGetEntry(UINT16 u16Indx, UINT32* pu32PM)
{
    UINT32 u32Addr;
    
    
    u32Addr = MPM_INDEX_TO_SA(u16Indx);
    // read entry
    {
        UINT8       abyBuf[4];
        
        SWSRAM_bReadEntry(u32Addr, abyBuf);
        SWSRAM_vExtractBits( abyBuf, 0, 31, (PUINT8 )pu32PM);    
    }
    return TRUE;
}


BOOL SWMPMTB_bInsEntry(UINT16 u16Indx, UINT32 u32PM)
{
    UINT32 u32Addr;
    
    
    u32Addr = MPM_INDEX_TO_SA(u16Indx);
    
    // write entry
    {
        UINT8   abyBuf[4];
        SWSRAM_vModifyBits(abyBuf, 0, 31, (PUINT8)&u32PM);
        SWSRAM_bWriteEntry(u32Addr, abyBuf);        
    }
    return TRUE;
}


BOOL SWMPMTB_bDelEntry(UINT16 u16Indx)
{
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_4Byte];
    UINT32 u32Addr;
    
    
    STR_pvMemset(au8EntryBuf, 0 , SRAM_ENTRY_SIZE_4Byte);

    // write entry
    u32Addr = MPM_INDEX_TO_SA(u16Indx);
    SWSRAM_bWriteEntry(u32Addr,   au8EntryBuf);
    return TRUE;
}


/*
 * Description : Entry is empty in Multicast port mask table.
 */
BOOL SWMPMTB_bIsEntryEmpty(UINT16 u16Indx)
{
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_4Byte], uu;
    UINT32 u32Addr;
    
    
    u32Addr = MPM_INDEX_TO_SA(u16Indx);
    // read memory entry
    SWSRAM_bReadEntry(u32Addr, au8EntryBuf);
    for (uu = 0; uu < SRAM_ENTRY_SIZE_4Byte; uu++) {
        if (au8EntryBuf[uu] != 0)
            return FALSE;
    }
    return TRUE;
}