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/*

 * raw_execption.h

 *

 *          This file contains implementation of C function to

 *          Instanciate 60x ppc primary exception entries.

 *          More detailled information can be found on motorola

 *          site and more precisely in the following book :

 *

 *              MPC750

 *              Risc Microporcessor User's Manual

 *              Mtorola REF : MPC750UM/AD 8/97

 *

 * Copyright (C) 1999  Eric Valette (valette@crf.canon.fr)

 *                     Canon Centre Recherche France.

 *

 * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com>

 * to support 603, 603e, 604, 604e exceptions

 *

 *  The license and distribution terms for this file may be

 *  found in found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 * $Id: raw_exception.h,v 1.2 2001-09-27 12:01:25 chris Exp $

 */

#ifndef _LIBCPU_MCP750_EXCEPTION_RAW_EXCEPTION_H

#define _LIBCPU_MCP750_EXCEPTION_RAW_EXCEPTION_H

/*

 * Exception Vectors as defined in the MCP750 manual

 */

#define ASM_RESET_VECTOR        0x01

#define ASM_MACH_VECTOR         0x02

#define ASM_PROT_VECTOR         0x03

#define ASM_ISI_VECTOR          0x04

#define ASM_EXT_VECTOR          0x05

#define ASM_ALIGN_VECTOR        0x06

#define ASM_PROG_VECTOR         0x07

#define ASM_FLOAT_VECTOR        0x08

#define ASM_DEC_VECTOR          0x09

#define ASM_SYS_VECTOR          0x0C

#define ASM_TRACE_VECTOR        0x0D

#define ASM_PERFMON_VECTOR      0x0F

#define ASM_IMISS_VECTOR        0x10

#define ASM_DLMISS_VECTOR       0x11

#define ASM_DSMISS_VECTOR       0x12

#define ASM_ADDR_VECTOR         0x13

#define ASM_SYSMGMT_VECTOR      0x14

#define ASM_ITM_VECTOR          0x17

#define LAST_VALID_EXC          ASM_ITM_VECTOR

/*

 * Vector offsets as defined in the MCP750 manual

 */

#define ASM_RESET_VECTOR_OFFSET         (ASM_RESET_VECTOR << 8)

#define ASM_MACH_VECTOR_OFFSET          (ASM_MACH_VECTOR  << 8)

#define ASM_PROT_VECTOR_OFFSET          (ASM_PROT_VECTOR  << 8)

#define ASM_ISI_VECTOR_OFFSET           (ASM_ISI_VECTOR   << 8)

#define ASM_EXT_VECTOR_OFFSET           (ASM_EXT_VECTOR   << 8)

#define ASM_ALIGN_VECTOR_OFFSET         (ASM_ALIGN_VECTOR << 8)

#define ASM_PROG_VECTOR_OFFSET          (ASM_PROG_VECTOR  << 8)

#define ASM_FLOAT_VECTOR_OFFSET         (ASM_FLOAT_VECTOR << 8)

#define ASM_DEC_VECTOR_OFFSET           (ASM_DEC_VECTOR   << 8)

#define ASM_SYS_VECTOR_OFFSET           (ASM_SYS_VECTOR   << 8)

#define ASM_TRACE_VECTOR_OFFSET         (ASM_TRACE_VECTOR << 8)

#define ASM_ADDR_VECTOR_OFFSET          (ASM_ADDR_VECTOR  << 8)

#define ASM_SYSMGMT_VECTOR_OFFSET       (ASM_SYSMGMT_VECTOR << 8)

#define ASM_ITM_VECTOR_OFFSET           (ASM_ITM_VECTOR   << 8)

#ifndef ASM

/*

 * Type definition for raw exceptions.

 */

typedef unsigned char  rtems_vector;

struct  __rtems_raw_except_connect_data__;

typedef void            (*rtems_raw_except_func)                (void);

typedef unsigned char   rtems_raw_except_hdl_size;

typedef struct {

  rtems_vector                  vector;

  rtems_raw_except_func         raw_hdl;

  rtems_raw_except_hdl_size     raw_hdl_size;

}rtems_raw_except_hdl;

typedef void (*rtems_raw_except_enable)         (const struct __rtems_raw_except_connect_data__*);

typedef void (*rtems_raw_except_disable)        (const struct __rtems_raw_except_connect_data__*);

typedef int  (*rtems_raw_except_is_enabled)     (const struct __rtems_raw_except_connect_data__*);

typedef struct __rtems_raw_except_connect_data__{

 /*

  * Exception vector (As defined in the manual)

  */

  rtems_vector                  exceptIndex;

  /*

   * Exception raw handler. See comment on handler properties below in function prototype.

   */

  rtems_raw_except_hdl          hdl;

  /*

   * function for enabling raw exceptions. In order to be consistent

   * with the fact that the raw connexion can defined in the

   * libcpu library, this library should have no knowledge of

   * board specific hardware to manage exceptions and thus the

   * "on" routine must enable the except at processor level only.

   *

   */

    rtems_raw_except_enable     on;

  /*

   * function for disabling raw exceptions. In order to be consistent

   * with the fact that the raw connexion can defined in the

   * libcpu library, this library should have no knowledge of

   * board specific hardware to manage exceptions and thus the

   * "on" routine must disable the except both at device and PIC level.

   *

   */

  rtems_raw_except_disable      off;

  /*

   * function enabling to know what exception may currently occur

   */

  rtems_raw_except_is_enabled   isOn;

}rtems_raw_except_connect_data;

typedef struct {

  /*

   * size of all the table fields (*Tbl) described below.

   */

  unsigned int                          exceptSize;

  /*

   * Default handler used when disconnecting exceptions.

   */

  rtems_raw_except_connect_data         defaultRawEntry;

  /*

   * Table containing initials/current value.

   */

  rtems_raw_except_connect_data*        rawExceptHdlTbl;

}rtems_raw_except_global_settings;

/*

 * C callable function enabling to set up one raw idt entry

 */

extern int mpc60x_set_exception (const rtems_raw_except_connect_data*);

/*

 * C callable function enabling to get one current raw idt entry

 */

extern int mpc60x_get_current_exception (rtems_raw_except_connect_data*);

/*

 * C callable function enabling to remove one current raw idt entry

 */

extern int mpc60x_delete_exception (const rtems_raw_except_connect_data*);

/*

 * C callable function enabling to check if vector is valid

 */

extern int mpc750_vector_is_valid(rtems_vector vector);

inline static  void* mpc60x_get_vector_addr(rtems_vector vector)

{

  return ((void*)  (((unsigned) vector) << 8));

}

/*

 * Exception global init.

 */

extern int mpc60x_init_exceptions (rtems_raw_except_global_settings* config);

extern int mpc60x_get_exception_config (rtems_raw_except_global_settings** config);

# endif /* ASM */

#endif