swprimtb.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:    swprimtb.c
 *
 * Purpose: tos/dscp to 802.1p priority mapping table
 *
 * Author:  Wango Wei
 *
 * Date:    March 24, 2005
 *
 * Functions:
 *
 * Revision History:
 *
 */


#if !defined(__SWITCH_H__)
#include "switch.h"
#endif
#if !defined(__SWPRIMTB_H__)
#include "swprimtb.h"
#endif
#if !defined(__SWSRAM_H__)
#include "swsram.h"
#endif




/*---------------------  Static Definitions  ------------------------*/
#define DCSP_NUM_PER_MEM_ENTYR  8

/*---------------------  Static Types  ------------------------------*/
/*---------------------  Static Macros  -----------------------------*/
/*---------------------  Static Classes  ----------------------------*/
/*---------------------  Static Variables  --------------------------*/
/*---------------------  Static Functions  --------------------------*/
/*---------------------  Export Variables  --------------------------*/




BOOL SWPRIM_bReadEntry (UINT8  u8Dscp, UINT8 *pu8Pri)
{
    UINT8    abyEntryBuf[SRAM_ENTRY_SIZE_4Byte], byMemEntryNum, byId;


    if ((u8Dscp > DSCP_MAX))
        return FALSE;

    byMemEntryNum = u8Dscp / DCSP_NUM_PER_MEM_ENTYR;
    byId = u8Dscp % DCSP_NUM_PER_MEM_ENTYR;
    SWSRAM_bReadEntry(SRAM_TOSDSCP_1P_MAP_TBL_BASE_ADDR + (byMemEntryNum*SRAM_ENTRY_SIZE_4Byte), abyEntryBuf);
    SWSRAM_vExtractBitsByByte(abyEntryBuf, (byId*3), (byId*3)+2, pu8Pri);
    return TRUE;
}


BOOL SWPRIM_bWriteEntry (UINT8 u8Dscp, UINT8 u8Pri)
{
    UINT8    abyEntryBuf[SRAM_ENTRY_SIZE_4Byte], byMemEntryNum, byId;


    if ((u8Dscp > DSCP_MAX) || (u8Pri > PRIORITY_MAX))
        return FALSE;

    byMemEntryNum = u8Dscp / DCSP_NUM_PER_MEM_ENTYR;
    byId = u8Dscp % DCSP_NUM_PER_MEM_ENTYR;
    SWSRAM_bReadEntry(SRAM_TOSDSCP_1P_MAP_TBL_BASE_ADDR + (byMemEntryNum*SRAM_ENTRY_SIZE_4Byte), abyEntryBuf);
    SWSRAM_vModifyBitsByByte(abyEntryBuf, (byId*3), (byId*3)+2, &u8Pri);
    SWSRAM_bWriteEntry(SRAM_TOSDSCP_1P_MAP_TBL_BASE_ADDR + (byMemEntryNum*SRAM_ENTRY_SIZE_4Byte), abyEntryBuf);

    return TRUE;
}