var_intr.h

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#ifndef CYGONCE_HAL_VAR_INTR_H
#define CYGONCE_HAL_VAR_INTR_H

//==========================================================================
//
//      var_intr.h
//
//      AM33 Interrupt and clock support
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    nickg
// Contributors: nickg, jskov,
//               gthomas, jlarmour, dmoseley
// Date:         1999-02-16
// Purpose:      VR4300 Interrupt support
// Description:  The macros defined here provide the HAL APIs for handling
//               interrupts and the clock for AM33 variants of the MN10300
//               architecture.
//              
// Usage:
//              #include <cyg/hal/var_intr.h>
//              ...
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================

#include <pkgconf/hal.h>

#include <cyg/infra/cyg_type.h>

#include <cyg/hal/plf_intr.h>

//--------------------------------------------------------------------------

// The MN10300 has a somewhat complex interrupt structure. Besides the
// reset and NMI vectors there are seven maskable interrupt vectors
// which must point to code in the 64k starting at 0x40000000. There
// are also 25 Interrupt control groups, each of which can have 4
// interrupt lines attached, for a theoretical total of 100 interrupts
// (!). Some of these are dedicated to specific devices, other to
// external pins, and others are not connected to anything, resulting
// in only 45 that can actually be delivered. Each control group may
// be assigned one of seven interrupt levels, and is delivered to the
// corresponding vector. Software can then use a register to determine
// the delivering group and detect from there which interrupt has been
// delivered.
//
// The approach we will adopt at present is for the code attached to
// each vector to save state and jump via a table to a VSR. The
// default VSR will fully decode the delivered interrupt into a table
// of isr/data/object entries. VSR replacement will operate on the
// first level indirection table rather than the hardware
// vectors. This is the fastest mechanism, however it needs 100*3*4 +
// 7*4 = 1228 bytes for the tables.
// 

//--------------------------------------------------------------------------
// Interrupt vectors.

// The level-specific hardware vectors
// These correspond to VSRs and are the values to use for HAL_VSR_GET/SET
#define CYGNUM_HAL_VECTOR_0                     0
#define CYGNUM_HAL_VECTOR_1                     1
#define CYGNUM_HAL_VECTOR_2                     2
#define CYGNUM_HAL_VECTOR_3                     3
#define CYGNUM_HAL_VECTOR_4                     4
#define CYGNUM_HAL_VECTOR_5                     5
#define CYGNUM_HAL_VECTOR_6                     6
#define CYGNUM_HAL_VECTOR_NMI_ENTRY             7
#define CYGNUM_HAL_VECTOR_TRAP                  8
#define CYGNUM_HAL_VECTOR_NMI                   9
#define CYGNUM_HAL_VECTOR_WATCHDOG              10
#define CYGNUM_HAL_VECTOR_SYSTEM_ERROR          11
#define CYGNUM_HAL_VECTOR_JTAG                  12
#define CYGNUM_HAL_VECTOR_ISTEP                 13
#define CYGNUM_HAL_VECTOR_MISSA                 14
#define CYGNUM_HAL_VECTOR_UNIMP                 15
#define CYGNUM_HAL_VECTOR_PIEXE                 16
#define CYGNUM_HAL_VECTOR_MEMERR                17
#define CYGNUM_HAL_VECTOR_IBREAK                18
#define CYGNUM_HAL_VECTOR_DBSRL                 19
#define CYGNUM_HAL_VECTOR_PERIDB                20
#define CYGNUM_HAL_VECTOR_EXUNIMP               21
#define CYGNUM_HAL_VECTOR_OBREAK                22
#define CYGNUM_HAL_VECTOR_PRIV                  23
#define CYGNUM_HAL_VECTOR_BUSERR                24
#define CYGNUM_HAL_VECTOR_DBFLT                 25
#define CYGNUM_HAL_VECTOR_UNUSED_1              26
#define CYGNUM_HAL_VECTOR_UNUSED_2              27


#define CYGNUM_HAL_VSR_MIN                      0
#define CYGNUM_HAL_VSR_MAX                      27
#define CYGNUM_HAL_VSR_COUNT                    28

// Exception numbers. These are the values used when passed out to an
// external exception handler using cyg_hal_deliver_exception()

#define CYGNUM_HAL_EXCEPTION_NMI               CYGNUM_HAL_VECTOR_NMI
#define CYGNUM_HAL_EXCEPTION_WATCHDOG          CYGNUM_HAL_VECTOR_WATCHDOG
#define CYGNUM_HAL_EXCEPTION_SYSTEM_ERROR      CYGNUM_HAL_VECTOR_SYSTEM_ERROR
#define CYGNUM_HAL_EXCEPTION_TRAP              CYGNUM_HAL_VECTOR_TRAP
#define CYGNUM_HAL_EXCEPTION_JTAG              CYGNUM_HAL_VECTOR_JTAG
#define CYGNUM_HAL_EXCEPTION_ISTEP             CYGNUM_HAL_VECTOR_ISTEP
#define CYGNUM_HAL_EXCEPTION_MISSA             CYGNUM_HAL_VECTOR_MISSA
#define CYGNUM_HAL_EXCEPTION_UNIMP             CYGNUM_HAL_VECTOR_UNIMP
#define CYGNUM_HAL_EXCEPTION_PIEXE             CYGNUM_HAL_VECTOR_PIEXE
#define CYGNUM_HAL_EXCEPTION_MEMERR            CYGNUM_HAL_VECTOR_MEMERR
#define CYGNUM_HAL_EXCEPTION_IBREAK            CYGNUM_HAL_VECTOR_IBREAK
#define CYGNUM_HAL_EXCEPTION_DBSRL             CYGNUM_HAL_VECTOR_DBSRL
#define CYGNUM_HAL_EXCEPTION_PERIDB            CYGNUM_HAL_VECTOR_PERIDB
#define CYGNUM_HAL_EXCEPTION_EXUNIMP           CYGNUM_HAL_VECTOR_EXUNIMP
#define CYGNUM_HAL_EXCEPTION_OBREAK            CYGNUM_HAL_VECTOR_OBREAK
#define CYGNUM_HAL_EXCEPTION_PRIV              CYGNUM_HAL_VECTOR_PRIV
#define CYGNUM_HAL_EXCEPTION_BUSERR            CYGNUM_HAL_VECTOR_BUSERR
#define CYGNUM_HAL_EXCEPTION_DBLFLT            CYGNUM_HAL_VECTOR_DBLFLT


#define CYGNUM_HAL_EXCEPTION_MIN               CYGNUM_HAL_VSR_MIN
#define CYGNUM_HAL_EXCEPTION_MAX               CYGNUM_HAL_VSR_MAX
#define CYGNUM_HAL_EXCEPTION_COUNT             CYGNUM_HAL_VSR_COUNT

#define CYGNUM_HAL_EXCEPTION_INTERRUPT         CYGNUM_HAL_EXCEPTION_SYSTEM_ERROR
#define CYGNUM_HAL_VECTOR_BREAKPOINT           CYGNUM_HAL_EXCEPTION_SYSTEM_ERROR

// Canonical names for various exceptions. These are used
// by generic exception handling code to make sense of
// excptions that have been delivered.

#define CYGNUM_HAL_EXCEPTION_DATA_ACCESS       \
          CYGNUM_HAL_EXCEPTION_BUSERR
#define CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS \
          CYGNUM_HAL_EXCEPTION_MISSA
#define CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION \
          CYGNUM_HAL_EXCEPTION_UNIMP


// The decoded interrupts

#define CYGNUM_HAL_INTERRUPT_NMIRQ                0
#define CYGNUM_HAL_INTERRUPT_WATCHDOG             1
#define CYGNUM_HAL_INTERRUPT_SYSTEM_ERROR         2
#define CYGNUM_HAL_INTERRUPT_RESERVED_3           3

#define CYGNUM_HAL_INTERRUPT_RESERVED_4           4
#define CYGNUM_HAL_INTERRUPT_RESERVED_5           5
#define CYGNUM_HAL_INTERRUPT_RESERVED_6           6
#define CYGNUM_HAL_INTERRUPT_RESERVED_7           7

#define CYGNUM_HAL_INTERRUPT_TIMER_0              8
#define CYGNUM_HAL_INTERRUPT_RESERVED_9           9
#define CYGNUM_HAL_INTERRUPT_RESERVED_10          10
#define CYGNUM_HAL_INTERRUPT_RESERVED_11          11

#define CYGNUM_HAL_INTERRUPT_TIMER_1              12
#define CYGNUM_HAL_INTERRUPT_RESERVED_13          13
#define CYGNUM_HAL_INTERRUPT_RESERVED_14          14
#define CYGNUM_HAL_INTERRUPT_RESERVED_15          15

#define CYGNUM_HAL_INTERRUPT_TIMER_2              16
#define CYGNUM_HAL_INTERRUPT_RESERVED_17          17
#define CYGNUM_HAL_INTERRUPT_RESERVED_18          18
#define CYGNUM_HAL_INTERRUPT_RESERVED_19          19

#define CYGNUM_HAL_INTERRUPT_TIMER_3              20
#define CYGNUM_HAL_INTERRUPT_RESERVED_21          21
#define CYGNUM_HAL_INTERRUPT_RESERVED_22          22
#define CYGNUM_HAL_INTERRUPT_RESERVED_23          23

#define CYGNUM_HAL_INTERRUPT_TIMER_4              24
#define CYGNUM_HAL_INTERRUPT_RESERVED_25          25
#define CYGNUM_HAL_INTERRUPT_RESERVED_26          26
#define CYGNUM_HAL_INTERRUPT_RESERVED_27          27

#define CYGNUM_HAL_INTERRUPT_TIMER_5              28
#define CYGNUM_HAL_INTERRUPT_RESERVED_29          29
#define CYGNUM_HAL_INTERRUPT_RESERVED_30          30
#define CYGNUM_HAL_INTERRUPT_RESERVED_31          31

#define CYGNUM_HAL_INTERRUPT_TIMER_6              32
#define CYGNUM_HAL_INTERRUPT_RESERVED_33          33
#define CYGNUM_HAL_INTERRUPT_RESERVED_34          34
#define CYGNUM_HAL_INTERRUPT_RESERVED_35          35

#define CYGNUM_HAL_INTERRUPT_TIMER_6_COMPARE_A    36
#define CYGNUM_HAL_INTERRUPT_RESERVED_37          37
#define CYGNUM_HAL_INTERRUPT_RESERVED_38          38
#define CYGNUM_HAL_INTERRUPT_RESERVED_39          39

#define CYGNUM_HAL_INTERRUPT_TIMER_6_COMPARE_B    40
#define CYGNUM_HAL_INTERRUPT_RESERVED_41          41
#define CYGNUM_HAL_INTERRUPT_RESERVED_42          42
#define CYGNUM_HAL_INTERRUPT_RESERVED_43          43

#define CYGNUM_HAL_INTERRUPT_TIMER_7              44
#define CYGNUM_HAL_INTERRUPT_RESERVED_45          45
#define CYGNUM_HAL_INTERRUPT_RESERVED_46          46
#define CYGNUM_HAL_INTERRUPT_RESERVED_47          47

#define CYGNUM_HAL_INTERRUPT_TIMER_8              48
#define CYGNUM_HAL_INTERRUPT_RESERVED_49          49
#define CYGNUM_HAL_INTERRUPT_RESERVED_50          50
#define CYGNUM_HAL_INTERRUPT_RESERVED_51          51

#define CYGNUM_HAL_INTERRUPT_TIMER_9              52
#define CYGNUM_HAL_INTERRUPT_RESERVED_53          53
#define CYGNUM_HAL_INTERRUPT_RESERVED_54          54
#define CYGNUM_HAL_INTERRUPT_RESERVED_55          55

#define CYGNUM_HAL_INTERRUPT_TIMER_10             56
#define CYGNUM_HAL_INTERRUPT_RESERVED_57          57
#define CYGNUM_HAL_INTERRUPT_RESERVED_58          58
#define CYGNUM_HAL_INTERRUPT_RESERVED_59          59

#define CYGNUM_HAL_INTERRUPT_TIMER_11             60
#define CYGNUM_HAL_INTERRUPT_RESERVED_61          61
#define CYGNUM_HAL_INTERRUPT_RESERVED_62          62
#define CYGNUM_HAL_INTERRUPT_RESERVED_63          63

#define CYGNUM_HAL_INTERRUPT_DMA0                 64
#define CYGNUM_HAL_INTERRUPT_RESERVED_65          65
#define CYGNUM_HAL_INTERRUPT_RESERVED_66          66
#define CYGNUM_HAL_INTERRUPT_RESERVED_67          67

#define CYGNUM_HAL_INTERRUPT_DMA1                 68
#define CYGNUM_HAL_INTERRUPT_RESERVED_69          69
#define CYGNUM_HAL_INTERRUPT_RESERVED_70          70
#define CYGNUM_HAL_INTERRUPT_RESERVED_71          71

#define CYGNUM_HAL_INTERRUPT_DMA2                 72
#define CYGNUM_HAL_INTERRUPT_RESERVED_73          73
#define CYGNUM_HAL_INTERRUPT_RESERVED_74          74
#define CYGNUM_HAL_INTERRUPT_RESERVED_75          75

#define CYGNUM_HAL_INTERRUPT_DMA3                 76
#define CYGNUM_HAL_INTERRUPT_RESERVED_77          77
#define CYGNUM_HAL_INTERRUPT_RESERVED_78          78
#define CYGNUM_HAL_INTERRUPT_RESERVED_79          79

#define CYGNUM_HAL_INTERRUPT_SERIAL_0_RX          80
#define CYGNUM_HAL_INTERRUPT_RESERVED_81          81
#define CYGNUM_HAL_INTERRUPT_RESERVED_82          82
#define CYGNUM_HAL_INTERRUPT_RESERVED_83          83

#define CYGNUM_HAL_INTERRUPT_SERIAL_0_TX          84
#define CYGNUM_HAL_INTERRUPT_RESERVED_85          85
#define CYGNUM_HAL_INTERRUPT_RESERVED_86          86
#define CYGNUM_HAL_INTERRUPT_RESERVED_87          87