sysserial.c

ixp425 bsp for vxworks

/* sysSerial.c - IXP425 UART bsp serial device initialization */

/* Copyright 2002 Wind River Systems, Inc. */

#include "copyright_wrs.h"

/*
modification history
--------------------
01a,05jun02,jb  initial version...
*/

/*
DESCRIPTION
Serial initialisation routines.
*/

#include "vxWorks.h"
#include "iv.h"
#include "intLib.h"
#include "config.h"
#include "sysLib.h"
#include "ixp425.h"
#include "ixp425Sio.h"
#include "ixp425Sio.c"

/* 
 * UART2 should not be used as a very low level debug port therefore only enable it
 * if debug support is turned off.
 */
#ifdef INCLUDE_UART2_SUPPORT
   #ifdef INCLUDE_IXP425_UART_DEBUG
      #undef INCLUDE_UART2_SUPPORT
   #endif
#endif /* INCLUDE_UART2_SUPPORT */


/* local data */
static IXP425_SIO_CHAN ixp425Chan[IXP425_NUM_UARTS];

/******************************************************************************
*
* sysSerialHwInit - initialize the BSP serial devices to a quiesent 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
*/

void sysSerialHwInit (void)
    {
    /* intialize the chips device descriptors */

#ifdef INCLUDE_UART1_SUPPORT
     ixp425Chan[0].regs	= (UINT8 *)IXP425_UART1_BASE;
     ixp425Chan[0].level = INT_VEC_UART1;
     ixp425Chan[0].regDelta = IXP425_UART_REG_DELTA;
     ixp425Chan[0].xtal	= IXP425_UART_XTAL;
     ixp425Chan[0].baudRate = UART_DEFAULT_BAUD;
     ixp425Chan[0].options = 0;
#endif

#ifdef INCLUDE_UART2_SUPPORT
     ixp425Chan[1].regs	= (UINT8 *)IXP425_UART2_BASE;
     ixp425Chan[1].level = INT_VEC_UART2;
     ixp425Chan[1].regDelta = IXP425_UART_REG_DELTA;
     ixp425Chan[1].xtal	= IXP425_UART_XTAL;
     ixp425Chan[1].baudRate = UART_DEFAULT_BAUD;
     ixp425Chan[1].options = 0;
#endif

     /* reset the chips */

#ifdef INCLUDE_UART1_SUPPORT
     ixp425SioDevInit (&ixp425Chan[0]);
#endif

#ifdef INCLUDE_UART2_SUPPORT
     ixp425SioDevInit (&ixp425Chan[1]);
#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 initialized
* at that point, and intConnect() calls malloc().
*
* RETURNS: N/A
*/

void sysSerialHwInit2 (void)
    {

    /* now connect the serial device interrupts */

#ifdef INCLUDE_UART1_SUPPORT
    (void) intConnect ((VOIDFUNCPTR *)((UINT32)ixp425Chan[0].level),
                       (VOIDFUNCPTR) ixp425SioInt, (int)&ixp425Chan[0]);
#endif

#ifdef INCLUDE_UART2_SUPPORT
    (void) intConnect ((VOIDFUNCPTR *)((UINT32)ixp425Chan[1].level),
                       (VOIDFUNCPTR) ixp425SioInt, (int)&ixp425Chan[1]);
#endif

#ifdef INCLUDE_UART1_SUPPORT
    /* Enable the UART interrupt */
    intEnable (ixp425Chan[0].level);
#endif

#ifdef INCLUDE_UART2_SUPPORT
    intEnable (ixp425Chan[1].level);
#endif
    }

/******************************************************************************
*
* sysSerialChanGet - get the SIO_CHAN device associated with a serial channel
*
* This routine gets the SIO_CHAN device associated with a specified 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
    )
    {
    switch (channel)
	{
#ifdef INCLUDE_UART1_SUPPORT
	case 0:
	    return ((SIO_CHAN *)&ixp425Chan[0]);
#endif

#ifdef INCLUDE_UART2_SUPPORT
	case 1:
	    return ((SIO_CHAN *)&ixp425Chan[1]);
#endif
	default:
	    return ((SIO_CHAN *)ERROR);
	}
    }

/******************************************************************************
*
* 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 control to the boot ROM.
*
* RETURNS: N/A.
*/

void sysSerialReset (void)
    {
    /* Disable the UART interrupt */

#ifdef INCLUDE_UART1_SUPPORT
    intDisable (ixp425Chan[0].level);
#endif

#ifdef INCLUDE_UART2_SUPPORT
    intDisable (ixp425Chan[1].level);
#endif
    }

/******************************************************************************
*
* sysSerialShow - display serial statistics
*
* RETURNS: N/A.
*/

void sysSerialShow ()
    {
    int i=0;

    for (i=0; i<IXP425_NUM_UARTS; i++)
	{
	printf("\nChannel (%d):", i);
	ixp425SioStatsShow(&ixp425Chan[i]);
	}
    }