sysne2000end.c

鼎鼎大名的WRS提供的VxWorks下pcPentium BSP开发包

/* sysNe2000End.c - system configuration module for NE2000 END */
 
/* Copyright 1999 Wind River Systems, Inc. */
 
/*
modification history
--------------------
01b,31mar99,sbs  corrected ne2000ParamTemplate initialization.
                 (SPR #26208)
01a,10mar99,sbs  written from sysNE2000End.c
*/


/*
DESCRIPTION
This is the WRS-supplied configuration module for the VxWorks 
NE2000 (ene) END driver for the ISA/PC104 bus.
 
It performs the dynamic parameterization of the ne2000End driver.
This technique of 'just-in-time' parameterization allows driver
parameter values to be declared as any other defined constants rather 
than as static strings. 
*/
 
/* includes */

#include "vxWorks.h"
#include "stdio.h"
#include "stdlib.h"
#include "string.h"
#include "end.h"
#include "config.h"

#ifdef INCLUDE_ENE_END
 
/* defines */

#define ENE_BYTE_ACCESS 	FALSE 	/* set to enforce 8 bit */
#define ENE_USE_ENET_PROM 	TRUE    /* set to use prom enet adrs */
#define ENE_OFFSET 		0

/* globals */

char ne2000EnetAddr[8];  	/* place holder for driver */
 
/* imports */

IMPORT END_OBJ * ne2000EndLoad (char *);


/******************************************************************************
*
* sysNe2000EndLoad - load (create) NE2000 (ene) device
*
* This routine loads the ene device with initial parameters specified by
* values given in the BSP configuration files (config.h).
*
* RETURNS: pointer to END object or ERROR.
*
* SEE ALSO: ne2000EndLoad()
*/
 
END_OBJ * sysNe2000EndLoad
    (
    char * pParamStr,   /* ptr to initialization parameter string */
    void * unused       /* unused optional argument */
    )
    {
    /*
     * The ne2000End driver END_LOAD_STRING should be:
     * "<adrs>:<ivec>:<iLvl>:<byteAccess>:<usePromEnetAddr>:<offset>"
     * Note that ne2000 unit string is prepended by the mux, so we 
     * don't put it here. 
     */

    char * cp; 			
    char paramStr [END_INIT_STR_MAX];   /* from end.h */
    static char ne2000ParamTemplate [] = "%#x:%#x:%#x:%d:%d:%#x";
    END_OBJ * pEnd;

    if (strlen (pParamStr) == 0)
        {
        /* 
         * muxDevLoad() calls us twice.  If the string is
         * zero length, then this is the first time through
         * this routine, so we just return.
         */

        pEnd = ne2000EndLoad (pParamStr);
        }

    else
	{
        /*
         * On the second pass though here, we actually create 
         * the initialization parameter string on the fly.   
         * Note that we will be handed our unit number on the 
         * second pass through and we need to preserve that information.
         * So we use the unit number handed from the input string.
         */

        cp = strcpy (paramStr, pParamStr); /* cp points to paramStr */

        /* Now, we advance cp, by finding the end the string */

        cp += strlen (paramStr);
        
        /* finish off the initialization parameter string */

	sprintf (cp, ne2000ParamTemplate, 
                 IO_ADRS_ENE, 
                 INT_VEC_ENE,
                 INT_LVL_ENE, 
                 ENE_BYTE_ACCESS, 
                 ENE_USE_ENET_PROM, 
                 ENE_OFFSET);

        if ((pEnd = ne2000EndLoad (paramStr)) == (END_OBJ *)ERROR)
	    {
            printf ("Error: NE2000 device failed ne2000EndLoad routine.\n");
	    }
	}

    return (pEnd);
    }

 
/*******************************************************************************
*
* sysLanIntEnable - enable a bus interrupt level
*
* This routine enables a specified bus interrupt level.
*
* RETURNS: Ok or ERROR, if <intLevel> is out of range.
*
* ARGSUSED0
*/
 
STATUS sysLanIntEnable
    (
    int intLevel        /* interrupt level to enable */
    )
    {
    sysIntEnablePIC (intLevel);
    return (OK);
    }
 
#endif /* INCLUDE_ENE_END */