sysserial.c

vxworks的BSP开发配置文件

/* sysSerial.c - Intel ixm1200 serial device initialisation */

/* Copyright 1996-1998 Wind River Systems, Inc.; Copyright 1999 Intel Corp. */
#include "copyright_wrs.h"

/*
modification history
--------------------
01c,30aug01,scm  adjust to reflect ixm1200...
01b,13aug99,jdg  changed name from vbsa1200 to ixp1200eb
01a,07may99,jdg  created, based on brutus, version 01a
*/

/*
DESCRIPTION
This file contains the board-specific routines for serial channel
initialisation of the UART built in to the IXM1200 chip on the 
ixm1200 board.
*/

/* includes */

#include "vxWorks.h"
#include "iv.h"
#include "intLib.h"
#include "config.h"
#include "sysLib.h"
#include "ixm1200Sio.h"
#include "hpcSerial.h"

/* Local data structures */

LOCAL IXM1200_CHAN ixm1200Chan[N_IXM1200_UART_CHANNELS];

#ifdef INCLUDE_HPC_SERIAL
LOCAL HPC_SERIAL_CHAN hpcSerChan[N_HPC_SERIAL_CHANNELS];
#endif

/*
 * Array of pointers to all serial channels configured in system.
 * See sioChanGet(). It is this array that maps channel pointers
 * to standard device names.  The first entry will become "/tyCo/0",
 * the second "/tyCo/1", and so forth.
 */

SIO_CHAN * sysSioChans [] =
    {
    &ixm1200Chan[0].sio, /* /tyCo/0 */
#ifdef INCLUDE_HPC_SERIAL
    &hpcSerChan[0].sio,
    &hpcSerChan[1].sio,
#endif
    };

/******************************************************************************
*
* sysSerialHwInit - initialise the BSP serial devices to a quiescent state
*
* This routine initialises the BSP serial device descriptors and puts the
* devices in a quiescent 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_IXM1200_UART_CHANNELS; i++)
        {
        ixm1200Chan[i].baudRate = CONSOLE_BAUD_RATE;
        ixm1200Chan[i].xtal = UART_XTAL_FREQ; 

        /*
         * Initialise driver functions, getTxChar, putRcvChar and channelMode
         * and initialise UART
         */

        ixm1200UartDevInit(&ixm1200Chan[i]);
        }

#ifdef INCLUDE_HPC_SERIAL
    for (i=0; i < N_HPC_SERIAL_CHANNELS; i++)
        {
        hpcSerChan[i].channelNum = FIRST_HPC_SERIAL_CHANNEL + i;
        hpcsDevInit(&hpcSerChan[i]);
        }
#endif
    }

/******************************************************************************
*
* 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
* initialised at that point, and intConnect() may call malloc().
* 
* RETURNS: N/A 
*
* SEE ALSO: sysHwInit2()
*/

void sysSerialHwInit2 (void)
    {
    int i;

    for (i = 0; i < N_IXM1200_UART_CHANNELS; i++)
        {
        /*
         * We would like to check the return value from this and log a message
         * if it failed. However, logLib has not been initialised yet, so we
         * cannot log a message, so there's little point in checking it.
         */

        /* connect and enable interrupts */

        (void) intConnect (INUM_TO_IVEC(INT_VEC_UART),
                           ixm1200UartInt, (int) &ixm1200Chan[i]);

        ixm1200UartDevInit2(&ixm1200Chan[i]);
        }

#ifdef INCLUDE_HPC_SERIAL
    for (i=0; i < N_HPC_SERIAL_CHANNELS; i++)
        {
        /*
         * Open the HPC channel
         */

        hpcsDevInit2(&hpcSerChan[i]);
        }
#endif
    }

/******************************************************************************
*
* 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 >= (int) (NELEMENTS(sysSioChans)) )
        return (SIO_CHAN *) ERROR;

    return sysSioChans[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 bootroms.
*
* RETURNS: N/A.
*/

void sysSerialReset (void)
    {
    int i;

    for (i = 0; i < N_IXM1200_UART_CHANNELS; i++)
        {

        /* disable interrupts */
        ixm1200UartDevReset(&ixm1200Chan[i]);
        }

    return;
    }