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/*

 * Copyright (C) 2006 Josef Cejka

 * 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.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.

 */

#include <arch/kbd.h>

#include <ipc/ipc.h>

#include <sysinfo.h>

#define MSIM_KEY_F1 0x504f1bL

#define MSIM_KEY_F2 0x514f1bL

#define MSIM_KEY_F3 0x524f1bL

#define MSIM_KEY_F4 0x534f1bL

#define MSIM_KEY_F5 0x35315b1bL

#define MSIM_KEY_F6 0x37315b1bL

#define MSIM_KEY_F7 0x38315b1bL

#define MSIM_KEY_F8 0x39315b1bL

#define MSIM_KEY_F9 0x30325b1bL

#define MSIM_KEY_F10 0x31325b1bL

#define MSIM_KEY_F11 0x33325b1bL

#define MSIM_KEY_F12 0x34325b1bL

#define GXEMUL_KEY_F1 0x504f5b1bL

#define GXEMUL_KEY_F2 0x514f5b1bL

#define GXEMUL_KEY_F3 0x524f5b1bL

#define GXEMUL_KEY_F4 0x534f5b1bL

#define GXEMUL_KEY_F5 0x35315b1bL

#define GXEMUL_KEY_F6 0x37315b1bL

#define GXEMUL_KEY_F7 0x38315b1bL

#define GXEMUL_KEY_F8 0x39315b1bL

#define GXEMUL_KEY_F9 0x38325b1bL

#define GXEMUL_KEY_F10 0x39325b1bL

#define GXEMUL_KEY_F11 0x33325b1bL

#define GXEMUL_KEY_F12 0x34325b1bL

#define FUNCTION_KEYS 0x100

irq_cmd_t msim_cmds[1] = {

    { CMD_MEM_READ_1, (void *)0xB0000000, 0 }

};

irq_code_t msim_kbd = {

    1,

    msim_cmds

};

static int msim,gxemul;

int kbd_arch_init(void)

{

    ipc_register_irq(2, &msim_kbd);

    msim=sysinfo_value("machine.msim");

    gxemul=sysinfo_value("machine.lgxemul");

    return 1;

}

//*

//*

//* Please preserve this code (it can be used to determine scancodes)

//*

int to_hex(int v)

{

        return "0123456789ABCDEF"[v];

}

//*/

static int kbd_arch_process_msim(keybuffer_t *keybuffer, int scan_code)

{

    static unsigned long buf=0;

    static int count=0;

    //* Please preserve this code (it can be used to determine scancodes)

    //*

    //keybuffer_push(keybuffer, to_hex((scan_code>>4)&0xf));

    //keybuffer_push(keybuffer, to_hex(scan_code&0xf));

    //keybuffer_push(keybuffer, ' ');

    //keybuffer_push(keybuffer, ' ');

    //*/

    //return 1;

    if(scan_code==0x7e)

    {

        switch (buf){

            case MSIM_KEY_F5:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 5 );

                buf=count=0;

                return 1;

            case MSIM_KEY_F6:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 6 );

                buf=count=0;

                return 1;

            case MSIM_KEY_F7:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 7 );

                buf=count=0;

                return 1;

            case MSIM_KEY_F8:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 8 );

                buf=count=0;

                return 1;

            case MSIM_KEY_F9:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 9 );

                buf=count=0;

                return 1;

            case MSIM_KEY_F10:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 10 );

                buf=count=0;

                return 1;

            case MSIM_KEY_F11:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 11 );

                buf=count=0;

                return 1;

            case MSIM_KEY_F12:

                keybuffer_push(keybuffer,FUNCTION_KEYS | 12 );

                buf=count=0;

                return 1;

            default:

                keybuffer_push(keybuffer, buf & 0xff );

                keybuffer_push(keybuffer, (buf >> 8) &0xff );

                keybuffer_push(keybuffer, (buf >> 16) &0xff );

                keybuffer_push(keybuffer, (buf >> 24) &0xff );

                keybuffer_push(keybuffer, scan_code );

                buf=count=0;

                return 1;

        }

    }

    buf|=((unsigned long) scan_code)<<(8*(count++));

    if((buf & 0xff)!= (MSIM_KEY_F1 & 0xff)) {

        keybuffer_push(keybuffer,buf );

        buf=count=0;

        return 1;

    }

    if ( count <= 1 )

        return 1;

    if(    (buf & 0xffff) != (MSIM_KEY_F1 & 0xffff)

        && (buf & 0xffff) != (MSIM_KEY_F5 & 0xffff) ) {

        keybuffer_push(keybuffer, buf & 0xff );

        keybuffer_push(keybuffer, (buf >> 8) &0xff );

        buf=count=0;

        return 1;

    }

    if ( count <= 2)

        return 1;

    switch (buf){

        case MSIM_KEY_F1:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 1 );

            buf=count=0;

            return 1;

        case MSIM_KEY_F2:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 2 );

            buf=count=0;

            return 1;

        case MSIM_KEY_F3:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 3 );

            buf=count=0;

            return 1;

        case MSIM_KEY_F4:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 4 );

            buf=count=0;

            return 1;

    }

    if(    (buf & 0xffffff) != (MSIM_KEY_F5 & 0xffffff)

        && (buf & 0xffffff) != (MSIM_KEY_F9 & 0xffffff) ) {

        keybuffer_push(keybuffer, buf & 0xff );

        keybuffer_push(keybuffer, (buf >> 8) &0xff );

        keybuffer_push(keybuffer, (buf >> 16) &0xff );

        buf=count=0;

        return 1;

    }

    if ( count <= 3 )

        return 1;

    switch (buf){

        case MSIM_KEY_F5:

        case MSIM_KEY_F6:

        case MSIM_KEY_F7:

        case MSIM_KEY_F8:

        case MSIM_KEY_F9:

        case MSIM_KEY_F10:

        case MSIM_KEY_F11:

        case MSIM_KEY_F12:

            return 1;

        default:

            keybuffer_push(keybuffer, buf & 0xff );

            keybuffer_push(keybuffer, (buf >> 8) &0xff );

            keybuffer_push(keybuffer, (buf >> 16) &0xff );

            keybuffer_push(keybuffer, (buf >> 24) &0xff );

            buf=count=0;

            return 1;

        }

    return 1;

}

static int kbd_arch_process_gxemul(keybuffer_t *keybuffer, int scan_code)

{

    static unsigned long buf=0;

    static int count=0;

    //* Please preserve this code (it can be used to determine scancodes)

    //*

    //keybuffer_push(keybuffer, to_hex((scan_code>>4)&0xf));

    //keybuffer_push(keybuffer, to_hex(scan_code&0xf));

    //keybuffer_push(keybuffer, ' ');

    //keybuffer_push(keybuffer, ' ');

    //*/

    //return 1;

    if ( scan_code == '\r' )

        scan_code = '\n' ;

    buf|=((unsigned long) scan_code)<<(8*(count++));

    if((buf & 0xff)!= (GXEMUL_KEY_F1 & 0xff)) {

        keybuffer_push(keybuffer,buf );

        buf=count=0;

        return 1;

    }

    if ( count <= 1 )

        return 1;

    if(    (buf & 0xffff) != (GXEMUL_KEY_F1 & 0xffff)  ) {

        keybuffer_push(keybuffer, buf & 0xff );

        keybuffer_push(keybuffer, (buf >> 8) &0xff );

        buf=count=0;

        return 1;

    }

    if ( count <= 2)

        return 1;

    if(    (buf & 0xffffff) != (GXEMUL_KEY_F1 & 0xffffff)

        && (buf & 0xffffff) != (GXEMUL_KEY_F5 & 0xffffff)

        && (buf & 0xffffff) != (GXEMUL_KEY_F9 & 0xffffff) ) {

        keybuffer_push(keybuffer, buf & 0xff );

        keybuffer_push(keybuffer, (buf >> 8) &0xff );

        keybuffer_push(keybuffer, (buf >> 16) &0xff );

        buf=count=0;

        return 1;

    }

    if ( count <= 3 )

        return 1;

    switch (buf){

        case GXEMUL_KEY_F1:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 1 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F2:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 2 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F3:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 3 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F4:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 4 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F5:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 5 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F6:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 6 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F7:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 7 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F8:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 8 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F9:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 9 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F10:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 10 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F11:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 11 );

            buf=count=0;

            return 1;

        case GXEMUL_KEY_F12:

            keybuffer_push(keybuffer,FUNCTION_KEYS | 12 );

            buf=count=0;

            return 1;

        default:

            keybuffer_push(keybuffer, buf & 0xff );

            keybuffer_push(keybuffer, (buf >> 8) &0xff );

            keybuffer_push(keybuffer, (buf >> 16) &0xff );

            keybuffer_push(keybuffer, (buf >> 24) &0xff );

            buf=count=0;

            return 1;

        }

    return 1;

}

int kbd_arch_process(keybuffer_t *keybuffer, int scan_code)

{

    if(msim) return kbd_arch_process_msim(keybuffer, scan_code);

    if(gxemul) return kbd_arch_process_gxemul(keybuffer, scan_code);

    return 0;

}