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#ifndef CYGONCE_HAL_INTR_EXCEVT_H

#define CYGONCE_HAL_INTR_EXCEVT_H

//==========================================================================

//

//      hal_intr_excevt.h

//

//      HAL Interrupt and clock support for variants with EXCEVT style

//      exception/interrupt mapping (SH3, SH4)

//

//==========================================================================

//####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

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//

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// 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.

//

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// 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):    jskov

// Contributors: jskov,

// Date:         1999-04-24

// Purpose:      Define Interrupt support

// Description:  The macros defined here provide the HAL APIs for handling

//               interrupts and the clock.

//              

// Usage:        Is included from <cyg/hal/hal_intr.h>

//

//####DESCRIPTIONEND####

//

//==========================================================================

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

// SH exception vectors. These correspond to VSRs and are the values

// to use for HAL_VSR_GET/SET

//

// Note that exceptions are decoded - there is a VSR slot for each exception

// source, while interrupts are handled via the same VSR.

#define CYGNUM_HAL_VECTOR_POWERON                0 // power-on

#define CYGNUM_HAL_VECTOR_RESET                  1 // reset

#define CYGNUM_HAL_VECTOR_TLBMISS_ACCESS         2 // TLB-miss/invalid load

#define CYGNUM_HAL_VECTOR_TLBMISS_WRITE          3 // TLB-miss/invalid store

#define CYGNUM_HAL_VECTOR_INITIAL_WRITE          4 // initial page write

#define CYGNUM_HAL_VECTOR_TLBERROR_ACCESS        5 // TLB prot violation l

#define CYGNUM_HAL_VECTOR_TLBERROR_WRITE         6 // TLB prot violation s

#define CYGNUM_HAL_VECTOR_DATA_ACCESS            7 // address error (load)

#define CYGNUM_HAL_VECTOR_DATA_WRITE             8 // address error (store)

// RESERVED 9-10

#define CYGNUM_HAL_VECTOR_TRAP                  11 // unconditional trap

#define CYGNUM_HAL_VECTOR_ILLEGAL_INSTRUCTION   12 // reserved instruction

#define CYGNUM_HAL_VECTOR_ILLEGAL_SLOT_INSTRUCTION  13 

                                           // illegal instruction in delay slot

#define CYGNUM_HAL_VECTOR_NMI                   14 // NMI

#define CYGNUM_HAL_VECTOR_INSTRUCTION_BP        15 // user breakpoint

#define CYGNUM_HAL_VECTOR_INTERRUPT             16 // all interrupts

#ifndef CYG_VECTOR_IS_INTERRUPT

# define CYG_VECTOR_IS_INTERRUPT(v) (CYGNUM_HAL_VECTOR_INSTRUCTION_BP < (v))

#endif

#define CYGNUM_HAL_VSR_MIN                   CYGNUM_HAL_VECTOR_POWERON

#ifndef CYGNUM_HAL_VSR_MAX

# define CYGNUM_HAL_VSR_MAX                  CYGNUM_HAL_VECTOR_INTERRUPT

#endif

#define CYGNUM_HAL_VSR_COUNT                 ( CYGNUM_HAL_VSR_MAX + 1 )

#ifndef CYGNUM_HAL_VSR_EXCEPTION_COUNT

# define CYGNUM_HAL_VSR_EXCEPTION_COUNT       (CYGNUM_HAL_VECTOR_INSTRUCTION_BP-CYGNUM_HAL_VECTOR_POWERON+1)

#endif

// For the stub exception handling

#define _CYGNUM_HAL_VECTOR_FIRST_MEM_FAULT       CYGNUM_HAL_EXCEPTION_TLBMISS_ACCESS

#define _CYGNUM_HAL_VECTOR_LAST_MEM_FAULT        CYGNUM_HAL_EXCEPTION_DATA_WRITE

// The decoded interrupts.

#define CYGNUM_HAL_INTERRUPT_NMI             0

#define CYGNUM_HAL_INTERRUPT_RESERVED_1E0    1

#define CYGNUM_HAL_INTERRUPT_LVL0            2

#define CYGNUM_HAL_INTERRUPT_LVL1            3

#define CYGNUM_HAL_INTERRUPT_LVL2            4

#define CYGNUM_HAL_INTERRUPT_LVL3            5

#define CYGNUM_HAL_INTERRUPT_LVL4            6

#define CYGNUM_HAL_INTERRUPT_LVL5            7

#define CYGNUM_HAL_INTERRUPT_LVL6            8

#define CYGNUM_HAL_INTERRUPT_LVL7            9

#define CYGNUM_HAL_INTERRUPT_LVL8            10

#define CYGNUM_HAL_INTERRUPT_LVL9            11

#define CYGNUM_HAL_INTERRUPT_LVL10           12

#define CYGNUM_HAL_INTERRUPT_LVL11           13

#define CYGNUM_HAL_INTERRUPT_LVL12           14

#define CYGNUM_HAL_INTERRUPT_LVL13           15

#define CYGNUM_HAL_INTERRUPT_LVL14           16

#define CYGNUM_HAL_INTERRUPT_RESERVED_3E0    17

#define CYGNUM_HAL_INTERRUPT_TMU0_TUNI0      18

#define CYGNUM_HAL_INTERRUPT_TMU1_TUNI1      19

#define CYGNUM_HAL_INTERRUPT_TMU2_TUNI2      20

#define CYGNUM_HAL_INTERRUPT_TMU2_TICPI2     21

#define CYGNUM_HAL_INTERRUPT_RTC_ATI         22

#define CYGNUM_HAL_INTERRUPT_RTC_PRI         23

#define CYGNUM_HAL_INTERRUPT_RTC_CUI         24

#define CYGNUM_HAL_INTERRUPT_SCI_ERI         25

#define CYGNUM_HAL_INTERRUPT_SCI_RXI         26

#define CYGNUM_HAL_INTERRUPT_SCI_TXI         27

#define CYGNUM_HAL_INTERRUPT_SCI_TEI         28

#define CYGNUM_HAL_INTERRUPT_WDT_ITI         29

#define CYGNUM_HAL_INTERRUPT_REF_RCMI        30

#define CYGNUM_HAL_INTERRUPT_REF_ROVI        31

#ifndef CYGNUM_HAL_ISR_MAX

# define CYGNUM_HAL_ISR_MAX                  CYGNUM_HAL_INTERRUPT_REF_ROVI

#endif

#define CYGNUM_HAL_ISR_MIN                   CYGNUM_HAL_INTERRUPT_NMI

#define CYGNUM_HAL_ISR_COUNT                 ( CYGNUM_HAL_ISR_MAX - CYGNUM_HAL_ISR_MIN + 1 )

// The vector used by the Real time clock

#ifndef CYGNUM_HAL_INTERRUPT_RTC

# define CYGNUM_HAL_INTERRUPT_RTC             CYGNUM_HAL_INTERRUPT_TMU0_TUNI0

#endif

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

// Exception vectors. These are the values used when passed out to an

// external exception handler using cyg_hal_deliver_exception()

// The exception indexes are EXPEVT/0x20. Variants may define additional

// exception vectors.

#define CYGNUM_HAL_EXCEPTION_POWERON                0 // power-on

#define CYGNUM_HAL_EXCEPTION_RESET                  1 // reset

#define CYGNUM_HAL_EXCEPTION_TLBMISS_ACCESS         2 // TLB-miss/invalid load

#define CYGNUM_HAL_EXCEPTION_TLBMISS_WRITE          3 // TLB-miss/invalid store

#define CYGNUM_HAL_EXCEPTION_INITIAL_WRITE          4 // initial page write

#define CYGNUM_HAL_EXCEPTION_TLBERROR_ACCESS        5 // TLB prot violation l

#define CYGNUM_HAL_EXCEPTION_TLBERROR_WRITE         6 // TLB prot violation s

#define CYGNUM_HAL_EXCEPTION_DATA_ACCESS            7 // address error (load)

#define CYGNUM_HAL_EXCEPTION_DATA_WRITE             8 // address error (store)

#define CYGNUM_HAL_EXCEPTION_TRAP                  11 // unconditional trap

#define CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION   12 // reserved instruction

#define CYGNUM_HAL_EXCEPTION_ILLEGAL_SLOT_INSTRUCTION  13 

                                           // illegal instruction in delay slot

#define CYGNUM_HAL_EXCEPTION_INSTRUCTION_BP        15 // user breakpoint

#define CYGNUM_HAL_EXCEPTION_MIN          CYGNUM_HAL_EXCEPTION_POWERON

#ifndef CYGNUM_HAL_EXCEPTION_MAX

# define CYGNUM_HAL_EXCEPTION_MAX         CYGNUM_HAL_EXCEPTION_INSTRUCTION_BP

#endif

#define CYGNUM_HAL_EXCEPTION_COUNT           \

                 ( CYGNUM_HAL_EXCEPTION_MAX - CYGNUM_HAL_EXCEPTION_MIN + 1 )

#ifndef __ASSEMBLER__

#include <cyg/infra/cyg_type.h>

#include <cyg/hal/sh_regs.h>            // register definitions

#include <cyg/hal/hal_io.h>             // io macros

#include <cyg/infra/cyg_ass.h>          // CYG_FAIL

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

// Clock control, using TMU counter 0.

#define CYGHWR_SH_RTC_TIMER_IS_TMU

#define HAL_CLOCK_INITIALIZE( _period_ )                                    \

    CYG_MACRO_START                                                         \

    register cyg_uint8 _tstr_;                                              \

                                                                            \

    /* Disable timer while programming it. */                               \

    HAL_READ_UINT8(CYGARC_REG_TSTR, _tstr_);                                \

    _tstr_ &= ~CYGARC_REG_TSTR_STR0;                                        \

    HAL_WRITE_UINT8(CYGARC_REG_TSTR, _tstr_);                               \

                                                                            \

    /* Set counter registers. */                                            \

    HAL_WRITE_UINT32(CYGARC_REG_TCOR0, (_period_));                         \

    HAL_WRITE_UINT32(CYGARC_REG_TCNT0, (_period_));                         \

                                                                            \

    /* Set interrupt on underflow and decrement frequency */                \

    HAL_WRITE_UINT16(CYGARC_REG_TCR0, CYGARC_REG_TCR_UNIE |                 \

                     ((4==CYGHWR_HAL_SH_TMU_PRESCALE_0) ?                   \

                          CYGARC_REG_TCR_TPSC_4 :                           \

                      (16==CYGHWR_HAL_SH_TMU_PRESCALE_0) ?                  \

                          CYGARC_REG_TCR_TPSC_16:                           \

                      (64==CYGHWR_HAL_SH_TMU_PRESCALE_0) ?                  \

                          CYGARC_REG_TCR_TPSC_64:CYGARC_REG_TCR_TPSC_256)); \

                                                                            \

                                                                            \

    /* Enable timer. */                                                     \

    _tstr_ |= CYGARC_REG_TSTR_STR0;                                         \

    HAL_WRITE_UINT8(CYGARC_REG_TSTR, _tstr_);                               \

                                                                            \

    CYG_MACRO_END

#define HAL_CLOCK_RESET( _vector_, _period_ )           \

    CYG_MACRO_START                                     \

    register cyg_uint16 _tcr_;                          \

                                                        \

    /* Clear underflow flag. */                         \

    HAL_READ_UINT16(CYGARC_REG_TCR0, _tcr_);            \

    _tcr_ &= ~CYGARC_REG_TCR_UNF;                       \

    HAL_WRITE_UINT16(CYGARC_REG_TCR0, _tcr_);           \

    HAL_READ_UINT16(CYGARC_REG_TCR0, _tcr_);            \

                                                        \

    CYG_MACRO_END

#define HAL_CLOCK_READ( _pvalue_ )                              \

    CYG_MACRO_START                                             \

    register cyg_uint32 _result_;                               \

                                                                \

    HAL_READ_UINT32(CYGARC_REG_TCNT0, _result_);                \

                                                                \

    *(_pvalue_) = CYGNUM_KERNEL_COUNTERS_RTC_PERIOD-_result_;   \

    CYG_MACRO_END

#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY

#define HAL_CLOCK_LATENCY( _pvalue_ ) HAL_CLOCK_READ(_pvalue_)

#endif

extern void hal_delay_us(int);

#define HAL_DELAY_US(n) hal_delay_us(n)

#endif // __ASSEMBLER__

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

#endif // ifndef CYGONCE_HAL_INTR_EXCEVT_H

// End of hal_intr_excevt.h