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https://gitlab.rtems.org/rtems/rtos/rtems.git
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391f35c8ff
* irq/irq.c: Removed printk() before the interrupt initialization because it somehow destroys the interrupt context. * make/custom/nds.cfg: Enable Thumb interwork. * startup/bspstart.c: Set default exception handler.
102 lines
1.6 KiB
C
102 lines
1.6 KiB
C
/*
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* RTEMS for Nintendo DS interrupt manager.
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*
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* Copyright (c) 2008 by Matthieu Bucchianeri <mbucchia@gmail.com>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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*
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* http://www.rtems.com/license/LICENSE
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*
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* $Id$
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*/
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#include <bsp.h>
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#include <rtems/irq.h>
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#include <nds.h>
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/*
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* this function check that the value given for the irq line is valid.
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*/
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static int
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isValidInterrupt (int irq)
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{
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if (irq < 0 || irq >= MAX_INTERRUPTS)
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return 0;
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return 1;
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}
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/*
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* initialize the irq management.
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*/
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void
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BSP_rtems_irq_mngt_init (void)
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{
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irqInit ();
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REG_IME = IME_ENABLE;
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}
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/*
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* install a irq handler.
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*/
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int
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BSP_install_rtems_irq_handler (const rtems_irq_connect_data * irq)
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{
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rtems_interrupt_level level;
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if (!isValidInterrupt (irq->name))
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return 0;
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rtems_interrupt_disable (level);
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/*
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* FIXME: irq_hdl will probably not be called with its parameter
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*/
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irqSet (irq->name, (VoidFunctionPointer)irq->hdl);
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if (irq->on != NULL)
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irq->on (irq);
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rtems_interrupt_enable (level);
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return 1;
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}
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/*
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* return the handler hooked to the given irq.
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*/
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int
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BSP_get_current_rtems_irq_handler (rtems_irq_connect_data * irq)
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{
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return 0; /* FIXME */
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}
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/*
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* remove & disable given irq.
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*/
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int
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BSP_remove_rtems_irq_handler (const rtems_irq_connect_data * irq)
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{
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rtems_interrupt_level level;
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if (!isValidInterrupt (irq->name))
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return 0;
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rtems_interrupt_disable (level);
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if (irq->off != NULL)
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irq->off (irq);
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irqClear (irq->name);
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rtems_interrupt_enable (level);
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return 1;
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}
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