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

//

//      v850_misc.c

//

//      HAL CPU variant miscellaneous functions

//

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

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//

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//

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

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2000-03-15

// Purpose:      HAL miscellaneous functions

// Description:  This file contains miscellaneous functions provided by the

//               HAL.

//

//####DESCRIPTIONEND####

//

//========================================================================*/

#include <pkgconf/hal.h>

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

#include <cyg/infra/cyg_ass.h>          // assertion macros

#include <cyg/hal/hal_intr.h>

#include <cyg/hal/v850_common.h>

externC void cyg_hal_platform_hardware_init(void);

//

// Interrupt management functions

//

static volatile unsigned char *interrupt_control_registers[] = {

    CYG_HAL_V85X_INTERRUPT_CONTROL_REGISTERS   // Defined in <plf_intr.h>

};

#define INT_CONTROL_PENDING   0x80

#define INT_CONTROL_DISABLE   0x40

#define INT_CONTROL_LEVEL(n)  n

#define INT_CONTROL_DEFAULT INT_CONTROL_DISABLE|INT_CONTROL_LEVEL(7)

//

// Mask, i.e. disable, interrupt #vector from occurring

//

void

hal_interrupt_mask(int vector)

{

    volatile unsigned char *ctl;

    CYG_ASSERT(vector >= CYGNUM_HAL_ISR_MIN, "invalid interrupt vector [< MIN]");

    CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX, "invalid interrupt vector [> MAX]");

    ctl = interrupt_control_registers[vector-CYGNUM_HAL_ISR_MIN];

    CYG_ASSERT((void *)ctl != 0, "invalid interrupt vector [not defined]");

    if (ctl ) {

        *ctl |= INT_CONTROL_DISABLE;

    }

}

//

// Unmask, i.e. enable, interrupt #vector

//

void

hal_interrupt_unmask(int vector)

{

    volatile unsigned char *ctl;

    CYG_ASSERT(vector >= CYGNUM_HAL_ISR_MIN, "invalid interrupt vector [< MIN]");

    CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX, "invalid interrupt vector [> MAX]");

    ctl = interrupt_control_registers[vector-CYGNUM_HAL_ISR_MIN];

    CYG_ASSERT((void *)ctl != 0, "invalid interrupt vector [not defined]");

    if (ctl ) {

        *ctl &= ~INT_CONTROL_DISABLE;

    }

}

//

// Acknowledge, i.e. clear, interrupt #vector

//

void

hal_interrupt_acknowledge(int vector)

{

    volatile unsigned char *ctl;

    CYG_ASSERT(vector >= CYGNUM_HAL_ISR_MIN, "invalid interrupt vector [< MIN]");

    CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX, "invalid interrupt vector [> MAX]");

    ctl = interrupt_control_registers[vector-CYGNUM_HAL_ISR_MIN];

    CYG_ASSERT((void *)ctl != 0, "invalid interrupt vector [not defined]");

    if (ctl ) {

        *ctl &= ~INT_CONTROL_PENDING;

    }

}

static void

init_interrupts(void)

{

    int i;

    volatile unsigned char *ctl;

    for (i = CYGNUM_HAL_ISR_MIN;  i <= CYGNUM_HAL_ISR_MAX;  i++) {

        ctl = interrupt_control_registers[i-CYGNUM_HAL_ISR_MIN];

        if (ctl) {

            *ctl = INT_CONTROL_DEFAULT;

        }

    }

}

//

// Initialize the hardware.  This may involve platform specific code.

//

void

cyg_hal_hardware_init(void)

{

    init_interrupts();

    cyg_hal_platform_hardware_init();

}

/*------------------------------------------------------------------------*/

/* End of v850_misc.c                                                      */