sysserial.c

S3c2510下的VXWORKS的BSP源代码（包括了以太网、串口、USB等等驱动）

/* sysSerial.c - SAMSUNG SMDK2510 serial device initialization */

/* Copyright 2002 SAMSUNG ELECTRONICS */

/*
modification history
--------------------
01a,08feb02,jmLee   created.
*/


#include "vxWorks.h"
#include "intLib.h"
#include "errno.h"
#include "sysLib.h"

#include "drv/multi/s3c2510.h"
#include "config.h"
#include "drv/intrCtl/s3c2510Intr.h"
#include "drv/sio/s3c2510Sio.h"


/* Driver Initialization Parameters */
LOCAL S3C2510_SIO_CHAN_PARAM s3c2510SioParams[] = {
    {INT_LVL_CUARTRX,  INT_LVL_CUARTTX,  INT_VEC_CUARTRX,  INT_VEC_CUARTTX,  0},
    {INT_LVL_HUART0RX, INT_LVL_HUART0TX, INT_VEC_HUART0RX, INT_VEC_HUART0TX, 1},
    {INT_LVL_HUART1RX, INT_LVL_HUART1TX, INT_VEC_HUART1RX, INT_VEC_HUART1TX, 2},
};

/* Array of all serial channels configured in system. */
LOCAL S3C2510_SIO_CHAN s3c2510SioChan[N_SIO_CHANNELS];


/******************************************************************************
*
* sysSerialHwInit - initialize the BSP serial devices to a quiescent state
*
* This routine initializes the BSP serial device descriptors and puts the
* devices in a quiesent state. It is called from sysHwInit() with interrupts
* locked.
*
* RETURNS: N/A
*
* SEE ALSO: sysHwInit()
*/

void sysSerialHwInit(void)
{
    int i;

    for (i=0; i<N_SIO_CHANNELS; i++)
    {
        s3c2510SioChan[i].intLvlRx  = s3c2510SioParams[i].intLvlRx;
        s3c2510SioChan[i].intLvlTx  = s3c2510SioParams[i].intLvlTx;
        s3c2510SioChan[i].intVecRx  = s3c2510SioParams[i].intVecRx;
        s3c2510SioChan[i].intVecTx  = s3c2510SioParams[i].intVecTx;

        s3c2510SioChan[i].ch        = s3c2510SioParams[i].ch;

        s3c2510SioDevInit(&s3c2510SioChan[i]);
        LED_ON(LED_ALL_MASK); 
    }
}

/******************************************************************************
*
* sysSerialHwInit2 - connect BSP serial device interrupts
*
* This routine connects the BSP serial device interrupts. It is called from
* sysHwInit2(). Serial device interrupts could not be connected in
* sysSerialHwInit() because the kernel memory allocator was not initialized at
* that point, and intConnect() may call malloc().
*
* RETURNS: N/A
*
* SEE ALSO: sysHwInit2()
*/

void sysSerialHwInit2(void)
{
    int i;

    for (i=0; i<N_SIO_CHANNELS; i++)
    {
        /* Connect interrupt. */
        intConnect(s3c2510SioChan[i].intVecRx, (VOIDFUNCPTR)s3c2510SioIntRx, (int)&s3c2510SioChan[i]);
        intConnect(s3c2510SioChan[i].intVecTx, (VOIDFUNCPTR)s3c2510SioIntTx, (int)&s3c2510SioChan[i]);

        /* Enable interrupt. */
        intEnable(s3c2510SioChan[i].intLvlRx);
        intEnable(s3c2510SioChan[i].intLvlTx);

        s3c2510SioDevInit2(&s3c2510SioChan[i]);
    }
}

/******************************************************************************
*
* sysSerialChanGet - get the SIO_CHAN device associated with a serial channel
*
* This routine returns a pointer to the SIO_CHAN device associated with a
* specified serial channel. It is called by usrRoot() to obtain pointers when
* creating the system serial devices '/tyCo/x'. It is also used by the WDB agent
* to locate its serial channel.
*
* RETURNS: A pointer to the SIO_CHAN structure for the channel, or ERROR if the
* channel is invalid.
*/

SIO_CHAN* sysSerialChanGet(
    int channel                                             /* serial channel */
    )
{
    if ((channel < 0) || (channel >= N_SIO_CHANNELS))
    {
        return (SIO_CHAN*)ERROR;
    }

    return ((SIO_CHAN*)&s3c2510SioChan[channel]);
}

/******************************************************************************
*
* sysSerialReset - reset the sio devices to a quiet state
*
* Reset all devices to prevent them from generating interrupts.
*
* This is called from sysToMonitor to shutdown the system gracefully before
* transferring to the boot ROMs.
*
* RETURNS: N/A.
*/

void sysSerialReset(void)
{
    int i;

    for (i=0; i<N_SIO_CHANNELS; i++)
    {
        /* Disable interrupt. */
        intDisable(s3c2510SioChan[i].intLvlRx);
        intDisable(s3c2510SioChan[i].intLvlTx);
    }
}