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/*  ictrl.h

 *

 *  This file contains definitions and declarations for the

 *  PowerPC 403 CPU built-in external interrupt controller

 *

 *

 *  Author: Thomas Doerfler <td@imd.m.isar.de>

 *

 *  COPYRIGHT (c) 1998 by IMD, Puchheim, Germany

 *

 *  To anyone who acknowledges that this file is provided "AS IS"

 *  without any express or implied warranty:

 *      permission to use, copy, modify, and distribute this file

 *      for any purpose is hereby granted without fee, provided that

 *      the above copyright notice and this notice appears in all

 *      copies, and that the name of IMD not be used in

 *      advertising or publicity pertaining to distribution of the

 *      software without specific, written prior permission.

 *      IMD makes no representations about the suitability

 *      of this software for any purpose.

 *

 */

#ifndef _INCLUDE_ICTRL_h

#define _INCLUDE_ICTRL_h

#include <rtems.h>

#include <rtems/system.h>

#include <rtems/score/isr.h>

#ifdef __cplusplus

extern "C" {

#endif

/*

 *  definitions for second level IRQ handler support

 *  External Interrupts via EXTERNAL/EISR

 */

#define PPC_IRQ_EXT_BASE        (PPC_IRQ_LAST+1)

/* mask for external interrupt status in EXIER/EXISR register */

/* note: critical interrupt is in these registers aswell */

#define PPC_EXI_MASK           0x0FFFFFFF

#define PPC_IRQ_EXT_SPIR        (PPC_IRQ_EXT_BASE+4)

#define PPC_IRQ_EXT_SPIT        (PPC_IRQ_EXT_BASE+5)

#define PPC_IRQ_EXT_JTAGR       (PPC_IRQ_EXT_BASE+6)

#define PPC_IRQ_EXT_JTAGT       (PPC_IRQ_EXT_BASE+7)

#define PPC_IRQ_EXT_DMA0        (PPC_IRQ_EXT_BASE+8)

#define PPC_IRQ_EXT_DMA1        (PPC_IRQ_EXT_BASE+9)

#define PPC_IRQ_EXT_DMA2        (PPC_IRQ_EXT_BASE+10)

#define PPC_IRQ_EXT_DMA3        (PPC_IRQ_EXT_BASE+11)

#define PPC_IRQ_EXT_0           (PPC_IRQ_EXT_BASE+27)

#define PPC_IRQ_EXT_1           (PPC_IRQ_EXT_BASE+28)

#define PPC_IRQ_EXT_2           (PPC_IRQ_EXT_BASE+29)

#define PPC_IRQ_EXT_3           (PPC_IRQ_EXT_BASE+30)

#define PPC_IRQ_EXT_4           (PPC_IRQ_EXT_BASE+31)

#define PPC_IRQ_EXT_MAX         (32)

#define VEC_TO_EXMSK(v)         (0x80000000 >> (v))

/*

 *

 * install a user vector for one of the external interrupt sources

 *

 */

rtems_status_code

ictrl_set_vector(rtems_isr_entry   new_handler,

                 unsigned32        vector,

                 rtems_isr_entry   *old_handler

);

/*

 * activate the interrupt controller

 */

rtems_status_code

ictrl_init(void);

#ifdef __cplusplus

}

#endif

#endif /* ! _INCLUDE_ICTRL_h */

/* end of include file */