pic.h

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// Copyright (c) 2014, 임경현 (dlarudgus20)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
//   list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef PIC_H_
#define PIC_H_

#include <stddef.h>
#include <stdint.h>

enum
{
    PIC_MASTER_PORT1 = 0x20,
    PIC_MASTER_PORT2 = 0x21,
    PIC_SLAVE_PORT1 = 0xa0,
    PIC_SLAVE_PORT2 = 0xa1,

    PIC_INTERRUPT_NUMBER = 0x20
};

enum
{
    PIC_IRQ_TIMER               = 0,
    PIC_IRQ_KEYBOARD            = 1,
    PIC_IRQ_SLAVE               = 2,
    PIC_IRQ_SERIAL1             = 3,
    PIC_IRQ_SERIAL2             = 4,
    PIC_IRQ_PARALLEL1           = 5,
    PIC_IRQ_FLOPPY              = 6,
    PIC_IRQ_PARALLEL2           = 7,
    PIC_IRQ_RTC                 = 8,
    PIC_IRQ_MOUSE               = 12,
    PIC_IRQ_COPROCESSER         = 13,
    PIC_IRQ_HARDDISK1           = 14,
    PIC_IRQ_HARDDISK2           = 15
};
enum
{
    PIC_MASKBIT_TIMER           = 1 << PIC_IRQ_TIMER,
    PIC_MASKBIT_KEYBOARD        = 1 << PIC_IRQ_KEYBOARD,
    PIC_MASKBIT_SLAVE           = 1 << PIC_IRQ_SLAVE,
    PIC_MASKBIT_SERIAL1         = 1 << PIC_IRQ_SERIAL1,
    PIC_MASKBIT_SERIAL2         = 1 << PIC_IRQ_SERIAL2,
    PIC_MASKBIT_PARALLEL1       = 1 << PIC_IRQ_PARALLEL1,
    PIC_MASKBIT_FLOPPY          = 1 << PIC_IRQ_FLOPPY,
    PIC_MASKBIT_PARALLEL2       = 1 << PIC_IRQ_PARALLEL2,
    PIC_MASKBIT_RTC             = 1 << PIC_IRQ_RTC,
    PIC_MASKBIT_MOUSE           = 1 << PIC_IRQ_MOUSE,
    PIC_MASKBIT_COPROCESSER     = 1 << PIC_IRQ_COPROCESSER,
    PIC_MASKBIT_HARDDISK1       = 1 << PIC_IRQ_HARDDISK1,
    PIC_MASKBIT_HARDDISK2       = 1 << PIC_IRQ_HARDDISK2
};
enum
{
    PIC_INTERRUPT_TIMER         = PIC_INTERRUPT_NUMBER + PIC_IRQ_TIMER,
    PIC_INTERRUPT_KEYBOARD      = PIC_INTERRUPT_NUMBER + PIC_IRQ_KEYBOARD,
    PIC_INTERRUPT_SLAVE         = PIC_INTERRUPT_NUMBER + PIC_IRQ_SLAVE,
    PIC_INTERRUPT_SERIAL1       = PIC_INTERRUPT_NUMBER + PIC_IRQ_SERIAL1,
    PIC_INTERRUPT_SERIAL2       = PIC_INTERRUPT_NUMBER + PIC_IRQ_SERIAL2,
    PIC_INTERRUPT_PARALLEL1     = PIC_INTERRUPT_NUMBER + PIC_IRQ_PARALLEL1,
    PIC_INTERRUPT_FLOPPY        = PIC_INTERRUPT_NUMBER + PIC_IRQ_FLOPPY,
    PIC_INTERRUPT_PARALLEL2     = PIC_INTERRUPT_NUMBER + PIC_IRQ_PARALLEL2,
    PIC_INTERRUPT_RTC           = PIC_INTERRUPT_NUMBER + PIC_IRQ_RTC,
    PIC_INTERRUPT_MOUSE         = PIC_INTERRUPT_NUMBER + PIC_IRQ_MOUSE,
    PIC_INTERRUPT_COPROCESSER   = PIC_INTERRUPT_NUMBER + PIC_IRQ_COPROCESSER,
    PIC_INTERRUPT_HARDDISK1     = PIC_INTERRUPT_NUMBER + PIC_IRQ_HARDDISK1,
    PIC_INTERRUPT_HARDDISK2     = PIC_INTERRUPT_NUMBER + PIC_IRQ_HARDDISK2
};

void ckPicInitialize(void);

void ckPicMaskInterrupt(uint16_t mask);

void ckPicSendEOI(uint8_t irq);

#endif /* PIC_H_ */