/*
 * 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.
 */

/** @addtogroup kbdmips32 mips32
 * @brief	HelenOS mips32 arch dependent parts of uspace keyboard handler.
 * @ingroup  kbd
 * @{
 */ 
/** @file
 */
#include <arch/kbd.h>
#include <genarch/nofb.h>
#include <ipc/ipc.h>
#include <sysinfo.h>
#include <kbd.h>
#include <keys.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 *) 0, 0, 2 }
};

irq_code_t msim_kbd = {
	1,
	msim_cmds
};

static int msim,gxemul;
static int fb_fb;


int kbd_arch_init(void)
{
	fb_fb = (sysinfo_value("fb.kind") == 1);
	msim_cmds[0].addr = sysinfo_value("kbd.address.virtual");
	ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &msim_kbd);
	return 0;
}


/*
//*
//* Please preserve this code (it can be used to determine scancodes)
//*
int to_hex(int v) 
{
        return "0123456789ABCDEF"[v];
}
*/

static int kbd_arch_process_fb(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, ipc_call_t *call)
{
	int scan_code = IPC_GET_ARG2(*call);
	static int esc_count=0;

	if (scan_code == 0x1b) {
		esc_count++;
		if (esc_count == 3)
			__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
	} else {
		esc_count=0;
	}

	if (fb_fb)
		return kbd_arch_process_fb(keybuffer, scan_code);

	return kbd_process_no_fb(keybuffer, scan_code);
}
/** @}
*/