keyboard.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 KEYBOARD_H_
#define KEYBOARD_H_

#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include "port.h"

enum
{
    KEYBOARD_PORT_CONTROL = 0x64,
    KEYBOARD_PORT_STATUS = 0x64,
    KEYBOARD_PORT_INPUT = 0x60,
    KEYBOARD_PORT_OUTPUT = 0x60
};

enum
{
    KEYBOARD_CONTROL_ACTIVATE_MOUSE = 0xa7,
    KEYBOARD_CONTROL_DEACTIVATED_MOUSE = 0xa8,
    KEYBOARD_CONTROL_ACTIVATE_KEYBOARD = 0xae,
    KEYBOARD_CONTROL_DEACTIVATE_KEYBOARD = 0xad,
    KEYBOARD_CONTROL_READ_OUTP = 0xd0,
    KEYBOARD_CONTROL_WRITE_OUTP = 0xd1
};
enum
{
    KEYBOARD_STATUS_PARE = 0x80,
    KEYBOARD_STATUS_TIM = 0x40,
    KEYBOARD_STATUS_AUXB = 0x20,
    KEYBOARD_STATUS_KEYL = 0x10,
    KEYBOARD_STATUS_C_D = 0x08,
    KEYBOARD_STATUS_SYSF = 0x04,
    KEYBOARD_STATUS_INPB = 0x02,
    KEYBOARD_STATUS_OUTB = 0x01
};

enum
{
    KEYBOARD_COMMAND_LED = 0xed,
    KEYBOARD_COMMAND_ACTIVATE = 0xf4,

    KEYBOARD_ACK = 0xfa
};

typedef struct tagKeyStruct
{
    uint8_t NormalKey;      
    uint8_t CombinedKey;    
    bool bPushedKey;        
} KeyStruct;

typedef struct tagKeyboardStruct
{
    bool bNumLock;          
    bool bCapsLock;         
    bool bScrollLock;       
    bool bShift;            
} KeyboardStruct;

extern KeyStruct g_KeyTable[];

extern KeyboardStruct g_Keyboard;

#include "keytable.h"

bool ckKeyboardInitialize(void);
bool ckKeyboardUpdateLED(void);

bool ckKeyboardWaitForACK(void);
bool ckKeyboardWaitForACKAndPutQueue(void);

void ckKeyboardWaitForInput(void);

void ckKeyboardResetPC(void);

static inline bool ckKeyboardIsInputBufferFull(void)
{
    return (ckPortInByte(KEYBOARD_PORT_STATUS) & KEYBOARD_STATUS_INPB) != 0;
}
static inline bool ckKeyboardIsOutputBufferFull(void)
{
    return (ckPortInByte(KEYBOARD_PORT_STATUS) & KEYBOARD_STATUS_OUTB) != 0;
}

void ckKeyboardIntHandler();

#endif /* KEYBOARD_H_ */