source: rtems/c/src/lib/libbsp/powerpc/gen83xx/include/tm27.h @ 2d2de4eb

/**
 * @file
 *
 * @brief Support file for Timer Test 27.
 */

/*
 * Copyright (c) 2008
 * Embedded Brains GmbH
 * Obere Lagerstr. 30
 * D-82178 Puchheim
 * Germany
 * rtems@embedded-brains.de
 *
 * The license and distribution terms for this file may be found in the file
 * LICENSE in this distribution or at http://www.rtems.com/license/LICENSE.
 */

#ifndef _RTEMS_TMTEST27
  #error "This is an RTEMS internal file you must not include directly."
#endif /* _RTEMS_TMTEST27 */

#ifndef TMTESTS_TM27_H
#define TMTESTS_TM27_H

#include <libcpu/powerpc-utility.h>
#include <bsp/vectors.h>

#define MUST_WAIT_FOR_INTERRUPT 1

static rtems_isr_entry tm27_interrupt_handler = NULL;

static int tm27_exception_handler( BSP_Exception_frame *frame, unsigned number)
{
        tm27_interrupt_handler( 0);

        return 0;
}

void Install_tm27_vector( rtems_isr_entry handler)
{
  int rv = 0;

  tm27_interrupt_handler = handler;

  rv = ppc_exc_set_handler( ASM_DEC_VECTOR, tm27_exception_handler);
  if (rv < 0) {
    printk( "Error installing clock interrupt handler!\n");
  }
}

#define Cause_tm27_intr() \
  ppc_set_decrementer_register( 8)

#define Clear_tm27_intr() \
  ppc_set_decrementer_register( UINT32_MAX)

#define Lower_tm27_intr() \
  (void) ppc_external_exceptions_enable()

#endif /* TMTESTS_TM27_H */