sysserial.c

ixp2400 bsp for vxworks

/* sysSerial.c - NS 16550 UART bsp serial device initialization */

/* Copyright 2001 Wind River Systems, Inc. */
#include "copyright_wrs.h"

/*
modification history
--------------------
rev, mar02, vgd - Initial Port from BRH_BE BSP to IXDP2400 
*/

#include "vxWorks.h"
#include "iv.h"
#include "intLib.h"
#include "config.h"
#include "sysLib.h"
#include "ixdp2400Sio.h"

/* local data */

LOCAL IXP2400_CHAN ixp2400Chan[IXP2400_UART_N_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 */
   
    
        ixp2400Chan[0].regs      = (UINT8 *)IXP2400_UART_ADDR;
        ixp2400Chan[0].level     = IXP2400_INT_UART;
        ixp2400Chan[0].regDelta  = IXP2400_UART_REG_DELTA; 
        ixp2400Chan[0].xtal      = IXP2400_UART_XTAL;
        ixp2400Chan[0].baudRate  = UART_DEFAULT_BAUD;

#ifdef SECOND_UART
		ixp2400Chan[0].regs      = (UINT8 *)IXP2400_UART_ADDR;
        ixp2400Chan[0].level     = IXP2400_INT_UART;
        ixp2400Chan[0].regDelta  = IXP2400_UART_REG_DELTA; 
        ixp2400Chan[0].xtal      = IXP2400_UART_XTAL;
        ixp2400Chan[0].baudRate  = UART_DEFAULT_BAUD;
#endif
         /* reset the chips */
        ixp2400DevInit (&ixp2400Chan[0]);

#ifdef SECOND_UART        
        ixp2400DevInit (&ixp2400Chan[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 */
    /* Connect serial interrupts. */

     (void) intConnect (INUM_TO_IVEC((UINT32)ixp2400Chan[0].level),
                       (VOIDFUNCPTR) ixp2400Int, (int)&ixp2400Chan[0]);
#ifdef SECOND_UART
	(void) intConnect (INUM_TO_IVEC((UINT32)ixp2400Chan[1].level),
                       (VOIDFUNCPTR) ixp2400Int, (int)&ixp2400Chan[1]);
#endif        
        /* Enable the UART interrupt */
        intEnable (ixp2400Chan[0].level);
#ifdef SECOND_UART
 	intEnable (ixp2400Chan[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)
	{
	case 0:
		 return ((SIO_CHAN *)&ixp2400Chan[0]);
#ifdef SECOND_UART
	case 1:
 		return ((SIO_CHAN *)&ixp2400Chan[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 */
    intDisable (ixp2400Chan[0].level);
#ifdef SECOND_UART
    intDisable (ixp2400Chan[1].level);
#endif	   
    }