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/*
*
* This file contains the implementation of the function described in irq.h
*
* Copyright (C) 1998, 1999 valette@crf.canon.fr
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* Dummy support for just the decrementer interrupt but no PIC.
*
* T. Straumann, 2007/11/30
*
* $Id$
*/
#include <rtems.h>
#include <bsp.h>
#include <bsp/irq.h>
#include <bsp/irq_supp.h>
#include <libcpu/raw_exception.h>
static rtems_irq_connect_data *rtems_hdl_tbl;
static rtems_irq_connect_data dflt_entry;
/*
* High level IRQ handler called from shared_raw_irq_code_entry
*/
int C_dispatch_irq_handler(
struct _BSP_Exception_frame *frame,
unsigned int excNum
)
{
register uint32_t l_orig;
if (excNum == ASM_DEC_VECTOR) {
l_orig = _ISR_Get_level();
/* re-enable all interrupts */
_ISR_Set_level(0);
bsp_irq_dispatch_list(rtems_hdl_tbl, BSP_DECREMENTER, dflt_entry.hdl);
_ISR_Set_level(l_orig);
return 0;
}
return -1; /* unhandled interrupt */
}
void
BSP_enable_irq_at_pic(const rtems_irq_number irq)
{
}
int
BSP_disable_irq_at_pic(const rtems_irq_number irq)
{
return 0;
}
int
BSP_setup_the_pic(rtems_irq_global_settings *config)
{
dflt_entry = config->defaultEntry;
rtems_hdl_tbl = config->irqHdlTbl;
return 1;
}
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