swmsttb.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:    swmsttb.c
 *
 * Purpose: Multiple Spanning Tree state table operation functions
 *
 * Author:  Henry Lin
 *
 * Date:    Nov 05, 2004
 *
 * Functions:
 *
 * Revision History:
 * 2005-07-15   LucasLin    Clear Software_Valid bit in SWMSTTB_bGetEntry
 *
 */


#if !defined(__STR_H__)
#include "str.h"
#endif
#if !defined(__SWITCH_H__)
#include "switch.h"
#endif
#if !defined(__SWREG_H__)
#include "swreg.h"
#endif
#if !defined(__SWSRAM_H__)
#include "swsram.h"
#endif
#if !defined(__SWMSTTB_H__)
#include "swmsttb.h"
#endif




/*---------------------  Static Definitions  ------------------------*/

/*---------------------  Static Types  ------------------------------*/

/*---------------------  Static Macros  -----------------------------*/
#define MSTID_TO_SA(mid)      (SRAM_STP_TBL_BASE_ADDR +  (mid<<SHIFT_NUM_SIZE_8Byte))

/*---------------------  Static Classes  ----------------------------*/

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

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

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




BOOL SWMSTTB_bGetEntry (UINT8 u8MstId, UINT32 *pu32STStHigh, UINT32 *pu32STStLow)
{
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_8Byte];
    UINT32  u32Addr;


    u32Addr = MSTID_TO_SA(u8MstId);
    // read entry
    SWSRAM_bReadEntry(u32Addr, au8EntryBuf);
    SWSRAM_bReadEntry(u32Addr+4, au8EntryBuf+4);

    /*
     * 2005-07-15, Lucas
     * Clear Software_Valid bit upon SWMSTTB_bGetEntry
     */
    au8EntryBuf[3] &= ~STP_BPTN_VALID;
    au8EntryBuf[7] &= ~STP_BPTN_VALID;
    
    *pu32STStHigh = *((UINT32 *)&au8EntryBuf[4]);
    *pu32STStLow  = *((UINT32 *)&au8EntryBuf[0]);
    
    return TRUE;
}


BOOL SWMSTTB_bInsEntry (UINT8 u8MstId, UINT32 u32STStHigh, UINT32 u32STStLow)
{
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_8Byte];
    UINT32  u32Addr;


    u32Addr = MSTID_TO_SA(u8MstId);
    STR_pvMemset(au8EntryBuf, 0 , SRAM_ENTRY_SIZE_8Byte);
    *((UINT32 *)au8EntryBuf)     = u32STStLow;
    *((UINT32 *)&au8EntryBuf[4]) = u32STStHigh;
    
    //bit[26][58] only used by software
    au8EntryBuf[3] |= STP_BPTN_VALID;
    au8EntryBuf[7] |= STP_BPTN_VALID;

    // write entry
    SWSRAM_bWriteEntry(u32Addr, au8EntryBuf);
    SWSRAM_bWriteEntry(u32Addr+4, au8EntryBuf+4);

    return TRUE;    
}


BOOL SWMSTTB_bDelEntry (UINT8 u8MstId)
{
    UINT32  u32Addr;
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_8Byte];


    u32Addr = MSTID_TO_SA(u8MstId);
    STR_pvMemset(au8EntryBuf, 0 , SRAM_ENTRY_SIZE_8Byte);

    // write entry
    SWSRAM_bWriteEntry(u32Addr,   au8EntryBuf);
    SWSRAM_bWriteEntry(u32Addr+4, au8EntryBuf+4);
    
    return TRUE;
}


BOOL SWMSTTB_bDelEntryBySA(UINT32 u32Addr)
{
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_8Byte];


    STR_pvMemset(au8EntryBuf, 0 , SRAM_ENTRY_SIZE_8Byte);

    // write entry
    SWSRAM_bWriteEntry(u32Addr,   au8EntryBuf);
    SWSRAM_bWriteEntry(u32Addr+4, au8EntryBuf+4);
    
    return TRUE;
}


/*
 * Description : This function only be used by debug(anlz).
 */
BOOL SWMSTTB_bIsEntryValid (UINT32 u32Addr)
{
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_8Byte];


    // read entry
    SWSRAM_bReadEntry(u32Addr, au8EntryBuf);
    SWSRAM_bReadEntry(u32Addr+4, au8EntryBuf+4);

    // Check if bit[26],[58] is 1 of Valid array
    if (((au8EntryBuf[3] & STP_BPTN_VALID) != 0) &&
         ((au8EntryBuf[7] & STP_BPTN_VALID) != 0) )
        return TRUE;

    return FALSE;
}

//
// Input:  Multiple Spanning Tree ID(0~63)
// Output: Sram Addr for MST table
//

UINT32 SWMSTTB_dwGetSA(UINT8 byMid)
{
    UINT32 dwAddr;
    

    if (byMid > 63)
        return UINT32_MAX;
        
    dwAddr = SRAM_STP_TBL_BASE_ADDR + (byMid << SHIFT_NUM_SIZE_8Byte);
        
    return dwAddr;
}


/*
 * Description : This function only be used by debug(anlz).
 */
void SWMSTTB_vSetEntryValid(UINT32 u32Addr)
{
    UINT8   au8EntryBuf[SRAM_ENTRY_SIZE_8Byte];


    // Write sram data, because we want to set bit[26][58]
    au8EntryBuf[3] = STP_BPTN_VALID;
    au8EntryBuf[7] = STP_BPTN_VALID;

    // write entry
    SWSRAM_bWriteEntry(u32Addr, au8EntryBuf);
    SWSRAM_bWriteEntry(u32Addr+4, au8EntryBuf+4);

}