swstp.c

VIA VT6524 8口网管交换机源码

/*
 * 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:    swstp.c
 *
 * Purpose: STP functions
 *
 * Author:  Tevin Chen
 *
 * Date:    Jan 08, 2002
 *
 * Functions:
 *
 * Revision History:
 *
 */


#if !defined(__SWITCH_H__)
#include "switch.h"
#endif
#if !defined(__SWREG_H__)
#include "swreg.h"
#endif
#if !defined(__SWSTP_H__)
#include "swstp.h"
#endif




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

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

/*---------------------  Static Macros  -----------------------------*/

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

/*---------------------  Static Variables  --------------------------*/
UINT8   au8PortState[SWITCH_PORT_NUM] = {
    FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING,
    FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING,
    FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING, FORWARDING,
    FORWARDING, FORWARDING
};

UINT32  u32PortStateMsk = 0x03FFFFFFUL;

/*---------------------  Static Functions  --------------------------*/
static BOOL s_bSetStpState(UINT8 byPortId, BYTE byStpState);

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




BOOL SWSTP_bSetStpStatus(BOOL bStatus)
{
    UINT8   u8Temp;
    UINT8   u8Msk=0x3;


    SWREG_vReadB(RB_STP_CPU_FWD_ADDR, &u8Temp);

    if (bStatus) {
        u8Temp &= ~u8Msk;
        u8Temp |= FWD_BPUD_PKT_2_CPU_ONLY ;
    }
    else {
        u8Temp &= ~u8Msk;
        u8Temp |= FWD_BPDU_PKT_2_ALL_BUT_CPU ;
    }

    SWREG_vWriteB(RB_STP_CPU_FWD_ADDR, u8Temp);

    return TRUE;
}



static BOOL s_bSetStpState(UINT8 byPortId, BYTE byStpState)
{
    switch( byStpState ) {
    case DISABLED:
        SWREG_vWriteB(RB_STP_PORT_START_ADDR+byPortId, DISABLED);
        break;
    case BLOCKING:
        SWREG_vWriteB(RB_STP_PORT_START_ADDR+byPortId, BLOCKING);
        break;
    case LISTENING:
        SWREG_vWriteB(RB_STP_PORT_START_ADDR+byPortId, BLOCKING);
        break;
    case LEARNING:
        SWREG_vWriteB(RB_STP_PORT_START_ADDR+byPortId, LEARNING);
        break;
    case FORWARDING:
        SWREG_vWriteB(RB_STP_PORT_START_ADDR+byPortId, FORWARDING);
        break;
    default:
        return FALSE;
    }

    return TRUE;
}


void SWSTP_vSetPortState(UINT8 u8Port, UINT8 u8State)
{
    UINT32 u32Msk = 0x1;


    au8PortState[u8Port] = u8State;

    switch (u8State) {
    case DISABLED:
        s_bSetStpState(u8Port, u8State);
        u32PortStateMsk &= ~(u32Msk<<u8Port) ;
        break;
        
    case BLOCKING:
        s_bSetStpState(u8Port, u8State);
        u32PortStateMsk &= ~(u32Msk<<u8Port) ;
        break;
        
    case LISTENING:
        s_bSetStpState(u8Port, u8State);
        u32PortStateMsk &= ~(u32Msk<<u8Port) ;
        break;
        
    case LEARNING:
        s_bSetStpState(u8Port, u8State);
        u32PortStateMsk &= ~(u32Msk<<u8Port) ;
        break;
        
    case FORWARDING:
        s_bSetStpState(u8Port, u8State);
        u32PortStateMsk |= (u32Msk<<u8Port) ;
        break;
        
    default:
        break;
    }
}