lpc214x_irq.c

/****************************************************************************
 * lpc214x/lpc214x_irq.c
 *
 *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name Gregory Nutt nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/irq.h>

#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
#include "lpc214x_vic.h"

/****************************************************************************
 * Definitions
 ****************************************************************************/

/****************************************************************************
 * Public Data
 ****************************************************************************/

uint32 *current_regs;

/****************************************************************************
 * Private Data
 ****************************************************************************/

/****************************************************************************
 * Private Functions
 ****************************************************************************/

/****************************************************************************
 * Public Funtions
 ****************************************************************************/

/****************************************************************************
 * Name: up_irqinitialize
 ****************************************************************************/

void up_irqinitialize(void)
{
  int reg;

  /* Acknowledge and disable all interrupts */

  vic_putreg(0, LPC214X_VIC_INTENCLEAR_OFFSET);
  vic_putreg(0, LPC214X_VIC_INTENABLE_OFFSET);

  /* All IRQs, no FIQs */

  vic_putreg(0, LPC214X_VIC_INTSELECT_OFFSET);

  /* Set the default vector */

  vic_putreg((uint32)up_decodeirq, LPC214X_VIC_DEFVECTADDR_OFFSET);

  /* Disable all vectored interrupts */

  for (reg = LPC214X_VIC_VECTCNTL0_OFFSET;
       reg <= LPC214X_VIC_VECTCNTL15_OFFSET;
       reg += 4)
    {
      vic_putreg(0, reg);
    }

#warning "Not implemented"

  /* currents_regs is non-NULL only while processing an interrupt */

  current_regs = NULL;

  /* And finally, enable interrupts */

#ifndef CONFIG_SUPPRESS_INTERRUPTS
  irqrestore(SVC_MODE | PSR_F_BIT);
#endif
}

/****************************************************************************
 * Name: up_disable_irq
 *
 * Description:
 *   Disable the IRQ specified by 'irq'
 *
 ****************************************************************************/

void up_disable_irq(int irq)
{
#warning "Not implemented"
}

/****************************************************************************
 * Name: up_enable_irq
 *
 * Description:
 *   Enable the IRQ specified by 'irq'
 *
 ****************************************************************************/

void up_enable_irq(int irq)
{
#warning "Not implemented"
}

/****************************************************************************
 * Name: up_maskack_irq
 *
 * Description:
 *   Mask the IRQ and acknowledge it
 *
 ****************************************************************************/

void up_maskack_irq(int irq)
{
#warning "Not implemented"
}

/****************************************************************************
 * Name: up_attach_vector
 *
 * Description:
 *   Assign
 *
 ****************************************************************************/

#ifndef CONFIG_VECTORED_INTERRUPTS
void up_attach_vector(int irq, int vector, vic_vector_t handler)
{
#warning "Not implemented"
}
#endif

/****************************************************************************
 * Name: up_detach_vector
 *
 * Description:
 *   Mask the IRQ and acknowledge it
 *
 ****************************************************************************/

#ifndef CONFIG_VECTORED_INTERRUPTS
void up_detach_vector(int vector)
{
#warning "Not implemented"
}
#endif