bosnmisc.c

这是单板上DPRAM的驱动程序

#include <psos.h>
#include "board.h"
#include "sdev.h"
#include "bspspec.h"
#include "bosnmisc.h"

static void BosnMiscInit(void *pDataBuf, BosnMiscCfgStruct *cfg )
{
    BosnMiscCfgStruct*   pCfg =(BosnMiscCfgStruct *)(pDataBuf);
    memmove(pCfg,cfg,sizeof(*cfg));
}

static int BosnMiscCntrl(void *pDataBuf, int cmd, void *pParam, int maxlen)
{
    int i,len;  /* del ret,index,by maold */
     PDA *pda= (PDA *)(GetIMMR() & IO_MAP_MASK);  
    BosnMiscCfgStruct*  pCfg =(BosnMiscCfgStruct *)(pDataBuf);
    switch(cmd)
    {
        case SDC_REINIT:
            BosnMiscInit(pDataBuf,pCfg);
            break;

        case SDC_GET_ALARMS:
            i=0; len=maxlen/4;
            if( (pda->pip_pbdat & (1<<(31-16)))==0 ){
                if(i>=len)return SDE_SHORTER_BUF;
                ((ULONG*)pParam)[i++]=SDA_LOST_16M8K;
                }
            if( (pda->pip_pbdat & (1<<(31-15)))==0 ){
                if(i>=len)return SDE_SHORTER_BUF;
                ((ULONG*)pParam)[i++]=SDA_ERR_S4402;
                }
            if( (pda->pip_pbdat & (1<<(31-22)))==0 ){
                if(i>=len)return SDE_SHORTER_BUF;
                ((ULONG*)pParam)[i++]=SDA_ERR_FPGA;
                }
            return i;

        default: 
            return SDE_UNKNOW_CMD;

    }/* end of switch(cmd) */
    return SDE_OK;
}

UCHAR *BosnMiscBspInit(int DEV, UCHAR *FreeMemPtr, BosnMiscCfgStruct *cfg)
{
    InstallSD(DEV,NULL,NULL,BosnMiscCntrl,FreeMemPtr);
    BosnMiscInit(FreeMemPtr, cfg); 
    FreeMemPtr += sizeof(BosnMiscCfgStruct);
    memcpy(FreeMemPtr,"*BosnMisc",8);
    FreeMemPtr += 8;
    return FreeMemPtr;
}