Subversion Repositories openrisc_me

#ifndef CYGONCE_VAR_INTR_H

#define CYGONCE_VAR_INTR_H

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

//

//      var_intr.h

//

//      Variant HAL 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, jlarmour, hmt

// Date:        2000-04-02

// Purpose:     Variant interrupt support

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

//              interrupts and the clock on the MPC8xx variant CPUs.

// Usage:       Is included via the architecture interrupt header:

//              #include <cyg/hal/hal_intr.h>

//              ...

//

//####DESCRIPTIONEND####

//

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

#include <pkgconf/hal.h>

#include <cyg/hal/plf_intr.h>

#include <cyg/infra/cyg_type.h>         // types

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

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

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

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

// Exception vectors.

// Additional exceptions on the MPC8xx CPUs

#define CYGNUM_HAL_VECTOR_RESERVED_F         15

#define CYGNUM_HAL_VECTOR_SW_EMUL            16

#define CYGNUM_HAL_VECTOR_ITLB_MISS          17

#define CYGNUM_HAL_VECTOR_DTLB_MISS          18

#define CYGNUM_HAL_VECTOR_ITLB_ERROR         19

#define CYGNUM_HAL_VECTOR_DTLB_ERROR         20

#define CYGNUM_HAL_VECTOR_RESERVED_15        21

#define CYGNUM_HAL_VECTOR_RESERVED_16        22

#define CYGNUM_HAL_VECTOR_RESERVED_17        23

#define CYGNUM_HAL_VECTOR_RESERVED_18        24

#define CYGNUM_HAL_VECTOR_RESERVED_19        25

#define CYGNUM_HAL_VECTOR_RESERVED_1A        26

#define CYGNUM_HAL_VECTOR_RESERVED_1B        27

#define CYGNUM_HAL_VECTOR_DATA_BP            28

#define CYGNUM_HAL_VECTOR_INSTRUCTION_BP     29

#define CYGNUM_HAL_VECTOR_PERIPHERAL_BP      30

#define CYGNUM_HAL_VECTOR_NMI                31

#define CYGNUM_HAL_VSR_MAX                   CYGNUM_HAL_VECTOR_NMI

// These are the values used when passed out to an

// external exception handler using cyg_hal_deliver_exception()

#define CYGNUM_HAL_EXCEPTION_RESERVED_0      CYGNUM_HAL_VECTOR_RESERVED_0

#define CYGNUM_HAL_EXCEPTION_MACHINE_CHECK   CYGNUM_HAL_VECTOR_MACHINE_CHECK

#ifdef CYGPKG_HAL_POWERPC_MPC860

// The MPC860 does not generate DSI and ISI: instead it goes to machine

// check, so that a software VM system can then call into vectors 0x300 or

// 0x400 if the address is truly invalid rather than merely not in the TLB

// right now.  Shades of IBM wanting to port OS/MVS here!

// See pp 7-9/10 in "PowerQUICC - MPC860 User's Manual"

# undef CYGNUM_HAL_EXCEPTION_DATA_ACCESS

# define CYGNUM_HAL_EXCEPTION_DATA_ACCESS    CYGNUM_HAL_VECTOR_MACHINE_CHECK

// do not define catchers for DSI and ISI - should never happen.

# undef CYGNUM_HAL_EXCEPTION_MACHINE_CHECK

# undef CYGNUM_HAL_EXCEPTION_CODE_ACCESS

#else

# define CYGNUM_HAL_EXCEPTION_DATA_ACCESS    CYGNUM_HAL_VECTOR_DSI

# define CYGNUM_HAL_EXCEPTION_CODE_ACCESS    CYGNUM_HAL_VECTOR_ISI

#endif

#define CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS  \

           CYGNUM_HAL_VECTOR_ALIGNMENT

#define CYGNUM_HAL_EXCEPTION_FPU_NOT_AVAIL   CYGNUM_HAL_VECTOR_FP_UNAVAILABLE

#define CYGNUM_HAL_EXCEPTION_RESERVED_A      CYGNUM_HAL_VECTOR_RESERVED_A

#define CYGNUM_HAL_EXCEPTION_RESERVED_B      CYGNUM_HAL_VECTOR_RESERVED_B

#define CYGNUM_HAL_EXCEPTION_SYSTEM_CALL     CYGNUM_HAL_VECTOR_SYSTEM_CALL

#define CYGNUM_HAL_EXCEPTION_TRACE           CYGNUM_HAL_VECTOR_TRACE

#define CYGNUM_HAL_EXCEPTION_FP_ASSIST       CYGNUM_HAL_VECTOR_FP_ASSIST

#define CYGNUM_HAL_EXCEPTION_RESERVED_F      CYGNUM_HAL_VECTOR_RESERVED_F

#define CYGNUM_HAL_EXCEPTION_SW_EMUL         CYGNUM_HAL_VECTOR_SW_EMUL

#define CYGNUM_HAL_EXCEPTION_CODE_TLBMISS_ACCESS  CYGNUM_HAL_VECTOR_ITLB_MISS

#define CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS  CYGNUM_HAL_VECTOR_DTLB_MISS

#define CYGNUM_HAL_EXCEPTION_CODE_TLBERROR_ACCESS \

               CYGNUM_HAL_VECTOR_ITLB_ERROR

#define CYGNUM_HAL_EXCEPTION_DATA_TLBERROR_ACCESS \

           CYGNUM_HAL_VECTOR_DTLB_ERROR

#define CYGNUM_HAL_EXCEPTION_RESERVED_15     CYGNUM_HAL_VECTOR_RESERVED_15

#define CYGNUM_HAL_EXCEPTION_RESERVED_16     CYGNUM_HAL_VECTOR_RESERVED_16

#define CYGNUM_HAL_EXCEPTION_RESERVED_17     CYGNUM_HAL_VECTOR_RESERVED_17

#define CYGNUM_HAL_EXCEPTION_RESERVED_18     CYGNUM_HAL_VECTOR_RESERVED_18

#define CYGNUM_HAL_EXCEPTION_RESERVED_19     CYGNUM_HAL_VECTOR_RESERVED_19

#define CYGNUM_HAL_EXCEPTION_RESERVED_1A     CYGNUM_HAL_VECTOR_RESERVED_1A

#define CYGNUM_HAL_EXCEPTION_RESERVED_1B     CYGNUM_HAL_VECTOR_RESERVED_1B

#define CYGNUM_HAL_EXCEPTION_DATA_BP         CYGNUM_HAL_VECTOR_DATA_BP

#define CYGNUM_HAL_EXCEPTION_INSTRUCTION_BP  CYGNUM_HAL_VECTOR_INSTRUCTION_BP

#define CYGNUM_HAL_EXCEPTION_PERIPHERAL_BP   CYGNUM_HAL_VECTOR_PERIPHERAL_BP

#define CYGNUM_HAL_EXCEPTION_NMI             CYGNUM_HAL_VECTOR_NMI

#define CYGNUM_HAL_EXCEPTION_MIN             CYGNUM_HAL_EXCEPTION_RESERVED_0

#define CYGNUM_HAL_EXCEPTION_MAX             CYGNUM_HAL_EXCEPTION_NMI

#define CYGHWR_HAL_EXCEPTION_VECTORS_DEFINED

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

// Interrupts

// The first level of external interrupts

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ0            1

#define CYGNUM_HAL_INTERRUPT_SIU_LVL0            2

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ1            3

#define CYGNUM_HAL_INTERRUPT_SIU_LVL1            4

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ2            5

#define CYGNUM_HAL_INTERRUPT_SIU_LVL2            6

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ3            7

#define CYGNUM_HAL_INTERRUPT_SIU_LVL3            8

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ4            9

#define CYGNUM_HAL_INTERRUPT_SIU_LVL4           10

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ5           11

#define CYGNUM_HAL_INTERRUPT_SIU_LVL5           12

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ6           13

#define CYGNUM_HAL_INTERRUPT_SIU_LVL6           14

#define CYGNUM_HAL_INTERRUPT_SIU_IRQ7           15

#define CYGNUM_HAL_INTERRUPT_SIU_LVL7           16

// Further decoded interrups

#define CYGNUM_HAL_INTERRUPT_SIU_TB_A           17

#define CYGNUM_HAL_INTERRUPT_SIU_TB_B           18

#define CYGNUM_HAL_INTERRUPT_SIU_PIT            19

#define CYGNUM_HAL_INTERRUPT_SIU_RTC_SEC        20

#define CYGNUM_HAL_INTERRUPT_SIU_RTC_ALR        21

#define CYGNUM_HAL_INTERRUPT_SIU_PCMCIA_A_IRQ   22

#define CYGNUM_HAL_INTERRUPT_SIU_PCMCIA_A_CHLVL 23

#define CYGNUM_HAL_INTERRUPT_SIU_PCMCIA_B_IRQ   24

#define CYGNUM_HAL_INTERRUPT_SIU_PCMCIA_B_CHLVL 25

#define CYGNUM_HAL_INTERRUPT_SIU_CPM            26

// Even further...

#define CYGNUM_HAL_INTERRUPT_CPM_PC15           27

#define CYGNUM_HAL_INTERRUPT_CPM_SCC1           28

#define CYGNUM_HAL_INTERRUPT_CPM_SCC2           29

#define CYGNUM_HAL_INTERRUPT_CPM_SCC3           30

#define CYGNUM_HAL_INTERRUPT_CPM_SCC4           31

#define CYGNUM_HAL_INTERRUPT_CPM_PC14           32

#define CYGNUM_HAL_INTERRUPT_CPM_TIMER1         33

#define CYGNUM_HAL_INTERRUPT_CPM_PC13           34

#define CYGNUM_HAL_INTERRUPT_CPM_PC12           35

#define CYGNUM_HAL_INTERRUPT_CPM_SDMA           36

#define CYGNUM_HAL_INTERRUPT_CPM_IDMA1          37

#define CYGNUM_HAL_INTERRUPT_CPM_IDMA2          38

#define CYGNUM_HAL_INTERRUPT_CPM_RESERVED_13    39

#define CYGNUM_HAL_INTERRUPT_CPM_TIMER2         40

#define CYGNUM_HAL_INTERRUPT_CPM_RISCTT         41

#define CYGNUM_HAL_INTERRUPT_CPM_I2C            42

#define CYGNUM_HAL_INTERRUPT_CPM_PC11           43

#define CYGNUM_HAL_INTERRUPT_CPM_PC10           44

#define CYGNUM_HAL_INTERRUPT_CPM_RESERVED_0D    45

#define CYGNUM_HAL_INTERRUPT_CPM_TIMER3         46

#define CYGNUM_HAL_INTERRUPT_CPM_PC9            47

#define CYGNUM_HAL_INTERRUPT_CPM_PC8            48

#define CYGNUM_HAL_INTERRUPT_CPM_PC7            49

#define CYGNUM_HAL_INTERRUPT_CPM_RESERVED_08    50

#define CYGNUM_HAL_INTERRUPT_CPM_TIMER4         51

#define CYGNUM_HAL_INTERRUPT_CPM_PC6            52

#define CYGNUM_HAL_INTERRUPT_CPM_SPI            53

#define CYGNUM_HAL_INTERRUPT_CPM_SMC1           54

#define CYGNUM_HAL_INTERRUPT_CPM_SMC2_PIP       55

#define CYGNUM_HAL_INTERRUPT_CPM_PC5            56

#define CYGNUM_HAL_INTERRUPT_CPM_PC4            57

#define CYGNUM_HAL_INTERRUPT_CPM_ERROR          58

#define CYGNUM_HAL_INTERRUPT_CPM_FIRST       CYGNUM_HAL_INTERRUPT_CPM_PC15

#define CYGNUM_HAL_INTERRUPT_CPM_LAST        CYGNUM_HAL_INTERRUPT_CPM_ERROR

#define CYGNUM_HAL_ISR_MAX                   CYGNUM_HAL_INTERRUPT_CPM_LAST

#endif

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

// Interrupt controller access

#ifndef CYGHWR_HAL_INTERRUPT_CONTROLLER_ACCESS_DEFINED

#ifdef CYGPKG_HAL_POWERPC_MPC860

static __inline__ void

cyg_hal_interrupt_mask ( cyg_uint32 vector )

{

    switch (vector) {

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ0 ... CYGNUM_HAL_INTERRUPT_SIU_LVL7:

    {

        // SIU interrupt vectors

        cyg_uint32 simask;

        HAL_READ_UINT32 (CYGARC_REG_IMM_SIMASK, simask);

        simask &= ~(((cyg_uint32) CYGARC_REG_IMM_SIMASK_IRQ0)

                    >> (vector - CYGNUM_HAL_INTERRUPT_SIU_IRQ0));

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_SIMASK, simask);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_TB_A:

    {

        // TimeBase A interrupt

        cyg_uint16 tbscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        tbscr &= ~(CYGARC_REG_IMM_TBSCR_REFAE);

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_TB_B:

    {

        // TimeBase B interrupt

        cyg_uint16 tbscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        tbscr &= ~(CYGARC_REG_IMM_TBSCR_REFBE);

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_PIT:

    {

        // Periodic Interrupt

        cyg_uint16 piscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        piscr &= ~(CYGARC_REG_IMM_PISCR_PIE);

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_SEC:

    {

        // Real Time Clock Second

        cyg_uint16 rtcsc;

        HAL_READ_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        rtcsc &= ~(CYGARC_REG_IMM_RTCSC_SIE);

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_ALR:

    {

        // Real Time Clock Alarm

        cyg_uint16 rtcsc;

        HAL_READ_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        rtcsc &= ~(CYGARC_REG_IMM_RTCSC_ALE);

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        break;

    }

    // PCMCIA_A_IRQ

    // PCMCIA_A_CHLVL

    // PCMCIA_B_IRQ

    // PCMCIA_B_CHLVL

    case CYGNUM_HAL_INTERRUPT_SIU_CPM:

    {

        // Communications Processor Module

        cyg_uint32 cicr;

        HAL_READ_UINT32 (CYGARC_REG_IMM_CICR, cicr);

        cicr &= ~(CYGARC_REG_IMM_CICR_IEN);

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_CICR, cicr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_CPM_FIRST ... CYGNUM_HAL_INTERRUPT_CPM_LAST:

    {

        // CPM interrupts

        cyg_uint32 cimr;

        HAL_READ_UINT32 (CYGARC_REG_IMM_CIMR, cimr);

        cimr &= ~(((cyg_uint32) 0x80000000)

                  >> (vector - CYGNUM_HAL_INTERRUPT_CPM_FIRST));

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_CIMR, cimr);

        break;

    }

    default:

        CYG_FAIL("Unknown Interrupt!!!");

        break;

    }

}

static __inline__ void

cyg_hal_interrupt_unmask ( cyg_uint32 vector )

{

    switch (vector) {

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ0 ... CYGNUM_HAL_INTERRUPT_SIU_LVL7:

    {

        // SIU interrupt vectors

        cyg_uint32 simask;

        HAL_READ_UINT32 (CYGARC_REG_IMM_SIMASK, simask);

        simask |= (((cyg_uint32) CYGARC_REG_IMM_SIMASK_IRQ0)

                   >> (vector - CYGNUM_HAL_INTERRUPT_SIU_IRQ0));

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_SIMASK, simask);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_TB_A:

    {

        // TimeBase A interrupt

        cyg_uint16 tbscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        tbscr |= CYGARC_REG_IMM_TBSCR_REFAE;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_TB_B:

    {

        // TimeBase B interrupt

        cyg_uint16 tbscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        tbscr |= CYGARC_REG_IMM_TBSCR_REFBE;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_PIT:

    {

        // Periodic Interrupt

        cyg_uint16 piscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        piscr |= CYGARC_REG_IMM_PISCR_PIE;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_SEC:

    {

        // Real Time Clock Second

        cyg_uint16 rtcsc;

        HAL_READ_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        rtcsc |= CYGARC_REG_IMM_RTCSC_SIE;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_ALR:

    {

        // Real Time Clock Alarm

        cyg_uint16 rtcsc;

        HAL_READ_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        rtcsc |= CYGARC_REG_IMM_RTCSC_ALE;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        break;

    }

    // PCMCIA_A_IRQ

    // PCMCIA_A_CHLVL

    // PCMCIA_B_IRQ

    // PCMCIA_B_CHLVL

    case CYGNUM_HAL_INTERRUPT_SIU_CPM:

    {

        // Communications Processor Module

        cyg_uint32 cicr;

        HAL_READ_UINT32 (CYGARC_REG_IMM_CICR, cicr);

        cicr |= CYGARC_REG_IMM_CICR_IEN;

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_CICR, cicr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_CPM_FIRST ... CYGNUM_HAL_INTERRUPT_CPM_LAST:

    {

        // CPM interrupts

        cyg_uint32 cimr;

        HAL_READ_UINT32 (CYGARC_REG_IMM_CIMR, cimr);

        cimr |= (((cyg_uint32) 0x80000000)

                 >> (vector - CYGNUM_HAL_INTERRUPT_CPM_FIRST));

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_CIMR, cimr);

        break;

    }

    default:

        CYG_FAIL("Unknown Interrupt!!!");

        break;

    }

}

static __inline__ void

cyg_hal_interrupt_acknowledge ( cyg_uint32 vector )

{

    switch (vector) {

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ0 ... CYGNUM_HAL_INTERRUPT_SIU_LVL7:

    {

        // SIU interrupt vectors

        cyg_uint32 sipend;

        // When IRQx is configured as an edge interrupt it needs to be

        // cleared. Write to INTx and IRQ/level bits are ignore so

        // it's safe to do always.

        HAL_READ_UINT32 (CYGARC_REG_IMM_SIPEND, sipend);

        sipend |= (((cyg_uint32) CYGARC_REG_IMM_SIPEND_IRQ0)

                   >> (vector - CYGNUM_HAL_INTERRUPT_SIU_IRQ0));

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_SIPEND, sipend);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_TB_A:

    {

        // TimeBase A interrupt

        cyg_uint16 tbscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        tbscr |= CYGARC_REG_IMM_TBSCR_REFA;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_TB_B:

    {

        // TimeBase B interrupt

        cyg_uint16 tbscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        tbscr |= CYGARC_REG_IMM_TBSCR_REFB;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_PIT:

    {

        // Periodic Interrupt

        cyg_uint16 piscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        piscr |= CYGARC_REG_IMM_PISCR_PS;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_SEC:

    {

        // Real Time Clock Second

        cyg_uint16 rtcsc;

        HAL_READ_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        rtcsc |= CYGARC_REG_IMM_RTCSC_SEC;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_ALR:

    {

        // Real Time Clock Alarm

        cyg_uint16 rtcsc;

        HAL_READ_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        rtcsc |= CYGARC_REG_IMM_RTCSC_ALR;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        break;

    }

    // PCMCIA_A_IRQ

    // PCMCIA_A_CHLVL

    // PCMCIA_B_IRQ

    // PCMCIA_B_CHLVL

    case CYGNUM_HAL_INTERRUPT_SIU_CPM:

        // Communications Processor Module

        // The CPM interrupts must be acknowledged individually.

        break;

    case CYGNUM_HAL_INTERRUPT_CPM_FIRST ... CYGNUM_HAL_INTERRUPT_CPM_LAST:

    {

        // CPM interrupts

        cyg_uint32 cisr;

        HAL_READ_UINT32 (CYGARC_REG_IMM_CISR, cisr);

        cisr |= (((cyg_uint32) 0x80000000)

                 >> (vector - CYGNUM_HAL_INTERRUPT_CPM_FIRST));

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_CISR, cisr);

        break;

    }

    default:

        CYG_FAIL("Unknown Interrupt!!!");

        break;

    }

}

static __inline__ void

cyg_hal_interrupt_configure ( cyg_uint32 vector,

                              cyg_bool level,

                              cyg_bool up )

{

    switch (vector) {

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ0:

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ1:

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ2:

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ3:

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ4:

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ5:

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ6:

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ7:

    {

        // External interrupts

        cyg_uint32 siel, bit;

        CYG_ASSERT( level || !up, "Only falling edge is supported");

        bit = (((cyg_uint32) CYGARC_REG_IMM_SIEL_IRQ0)

               >> (vector - CYGNUM_HAL_INTERRUPT_SIU_IRQ0));

        HAL_READ_UINT32 (CYGARC_REG_IMM_SIEL, siel);

        siel &= ~bit;

        if (!level) {

            // Set edge detect bit.

            siel |= bit;

        }

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_SIEL, siel);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_LVL0:

    case CYGNUM_HAL_INTERRUPT_SIU_LVL1:

    case CYGNUM_HAL_INTERRUPT_SIU_LVL2:

    case CYGNUM_HAL_INTERRUPT_SIU_LVL3:

    case CYGNUM_HAL_INTERRUPT_SIU_LVL4:

    case CYGNUM_HAL_INTERRUPT_SIU_LVL5:

    case CYGNUM_HAL_INTERRUPT_SIU_LVL6:

    case CYGNUM_HAL_INTERRUPT_SIU_LVL7:

    case CYGNUM_HAL_INTERRUPT_SIU_TB_A:

    case CYGNUM_HAL_INTERRUPT_SIU_TB_B:

    case CYGNUM_HAL_INTERRUPT_SIU_PIT:

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_SEC:

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_ALR:

    // PCMCIA_A_IRQ

    // PCMCIA_A_CHLVL

    // PCMCIA_B_IRQ

    // PCMCIA_B_CHLVL

    case CYGNUM_HAL_INTERRUPT_SIU_CPM:

    case CYGNUM_HAL_INTERRUPT_CPM_FIRST ... CYGNUM_HAL_INTERRUPT_CPM_LAST:

        // These cannot be configured.

        break;

    default:

        CYG_FAIL("Unknown Interrupt!!!");

        break;

    }

}

static __inline__ void

cyg_hal_interrupt_set_level ( cyg_uint32 vector, cyg_uint32 level )

{

    // Note: highest priority has the lowest numerical value.

    CYG_ASSERT( level >= CYGARC_SIU_PRIORITY_HIGH, "Invalid priority");

    CYG_ASSERT( level <= CYGARC_SIU_PRIORITY_LOW, "Invalid priority");

    switch (vector) {

    case CYGNUM_HAL_INTERRUPT_SIU_IRQ0 ... CYGNUM_HAL_INTERRUPT_SIU_LVL7:

        // These cannot be configured.

        break;

    case CYGNUM_HAL_INTERRUPT_SIU_TB_A:

    case CYGNUM_HAL_INTERRUPT_SIU_TB_B:

    {

        // TimeBase A+B interrupt

        cyg_uint16 tbscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        tbscr &= ~(CYGARC_REG_IMM_TBSCR_IRQMASK);

        tbscr |= CYGARC_REG_IMM_TBSCR_IRQ0 >> level;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_TBSCR, tbscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_PIT:

    {

        // Periodic Interrupt

        cyg_uint16 piscr;

        HAL_READ_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        piscr &= ~(CYGARC_REG_IMM_PISCR_IRQMASK);

        piscr |= CYGARC_REG_IMM_PISCR_IRQ0 >> level;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_PISCR, piscr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_SEC:

    case CYGNUM_HAL_INTERRUPT_SIU_RTC_ALR:

    {

        // Real Time Clock Second & Real Time Clock Alarm

        cyg_uint16 rtcsc;

        HAL_READ_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        rtcsc &= ~(CYGARC_REG_IMM_RTCSC_IRQMASK);

        rtcsc |= CYGARC_REG_IMM_RTCSC_IRQ0 >> level;

        HAL_WRITE_UINT16 (CYGARC_REG_IMM_RTCSC, rtcsc);

        break;

    }

    // PCMCIA_A_IRQ

    // PCMCIA_A_CHLVL

    // PCMCIA_B_IRQ

    // PCMCIA_B_CHLVL

    case CYGNUM_HAL_INTERRUPT_SIU_CPM:

    {

        // Communications Processor Module

        cyg_uint32 cicr;

        HAL_READ_UINT32 (CYGARC_REG_IMM_CICR, cicr);

        cicr &= ~(CYGARC_REG_IMM_CICR_IRQMASK);

        cicr |= level << CYGARC_REG_IMM_CICR_IRQ_SHIFT;

        HAL_WRITE_UINT32 (CYGARC_REG_IMM_CICR, cicr);

        break;

    }

    case CYGNUM_HAL_INTERRUPT_CPM_FIRST ... CYGNUM_HAL_INTERRUPT_CPM_LAST:

        // CPM interrupt levels are for internal priority. All interrupts

        // fed to the CPU use the CPM level set above.

        // FIXME: Control of SCdP ordering.

        break;

    default:

        CYG_FAIL("Unknown Interrupt!!!");

        break;

    }

}

// The decrementer interrupt cannnot be masked, configured or acknowledged.

#define HAL_INTERRUPT_MASK( _vector_ )                    \

    CYG_MACRO_START                                       \

    if (CYGNUM_HAL_INTERRUPT_DECREMENTER != (_vector_))   \

        cyg_hal_interrupt_mask ( (_vector_) );            \

    CYG_MACRO_END

#define HAL_INTERRUPT_UNMASK( _vector_ )                  \

    CYG_MACRO_START                                       \

    if (CYGNUM_HAL_INTERRUPT_DECREMENTER != (_vector_))   \

        cyg_hal_interrupt_unmask ( (_vector_) );          \

    CYG_MACRO_END

#define HAL_INTERRUPT_ACKNOWLEDGE( _vector_ )             \

    CYG_MACRO_START                                       \

    if (CYGNUM_HAL_INTERRUPT_DECREMENTER != (_vector_))   \

        cyg_hal_interrupt_acknowledge ( (_vector_) );     \

    CYG_MACRO_END

#define HAL_INTERRUPT_CONFIGURE( _vector_, _level_, _up_ )              \

    CYG_MACRO_START                                                     \

    if (CYGNUM_HAL_INTERRUPT_DECREMENTER != (_vector_))                 \

        cyg_hal_interrupt_configure ( (_vector_), (_level_), (_up_) );  \

    CYG_MACRO_END

#define HAL_INTERRUPT_SET_LEVEL( _vector_, _level_ )            \

    CYG_MACRO_START                                             \

    if (CYGNUM_HAL_INTERRUPT_DECREMENTER != (_vector_))         \

        cyg_hal_interrupt_set_level ( (_vector_) , (_level_) ); \

    CYG_MACRO_END

#define CYGHWR_HAL_INTERRUPT_CONTROLLER_ACCESS_DEFINED

#endif

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

// Interrupt arbiters

#ifdef CYGPKG_HAL_POWERPC_MPC860

externC cyg_uint32 hal_arbitration_isr_tb (CYG_ADDRWORD vector,

                                           CYG_ADDRWORD data);

externC cyg_uint32 hal_arbitration_isr_pit (CYG_ADDRWORD vector,

                                            CYG_ADDRWORD data);

externC cyg_uint32 hal_arbitration_isr_rtc (CYG_ADDRWORD vector,

                                            CYG_ADDRWORD data);

externC cyg_uint32 hal_arbitration_isr_cpm (CYG_ADDRWORD vector,

                                            CYG_ADDRWORD data);

#endif // ifdef CYGPKG_HAL_POWERPC_MPC860

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

// Symbols used by assembly code

#define CYGARC_VARIANT_DEFS                                     \

    DEFINE(CYGNUM_HAL_VECTOR_NMI, CYGNUM_HAL_VECTOR_NMI);

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

#endif // ifndef CYGONCE_VAR_INTR_H

// End of var_intr.h