tm27.h

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/*
 * 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.org/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 void (*tm27_interrupt_handler)(rtems_vector_number);
 
static int tm27_exception_handler( BSP_Exception_frame *frame, unsigned number)
{
    (*tm27_interrupt_handler)( 0);
 
    return 0;
}
 
static void Install_tm27_vector( void (*handler)(rtems_vector_number))
{
  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 */