/*----------------------------------------------------------------------------
 *  Copyright (c) 2001 by National Semiconductor Corporation
 *  National Semiconductor Corporation
 *
 *  All rights reserved
 *
 *<<<-------------------------------------------------------------------------
 * File Contents:
 *	icu.c - ICU related definitions
 *
 *  Project: USB Demo firmware
 *  Author : Yan Nosovitsky
 *  Date   : Oct 2001
 *----------------------------------------------------------------------->>>*/
#ifndef __icu_h__
#define __icu_h__




/* INTVECT value Definition */
# define MASKABLE_INTS_BASE		0x10
# define MASKABLE_INTS_LAST		0x2F
# define INT_TAB_SIZE			0x30

/* Internal interrupts */
#define TWM_INT			 	13

/* External interrupts */
#define DRQ_INT				17
#define USB_NODE_INT		31
#define TIMER_INT			7

/* Events values */

#define EVT_USB_BULK_RX			0x01
#define EVT_USB_BULK_TX			0x02
#define EVT_TIMER_INT			0x04
#define EVT_USB_ISO_RX			0x08
#define EVT_USB_ISO_TX			0x10

#define EVT_MASK 		(EVT_USB_BULK_RX | EVT_USB_BULK_TX | EVT_TIMER_INT | EVT_USB_ISO_RX | EVT_USB_ISO_TX)



/* Voyager reset and watchdog macro */

#define WATCHDOG_RESET \
	TWCFG = TWCFG_WDSDME; \
	WDSDM = 0

#define WATCHDOG_COUNT 60

#define WATCHDOG_INIT \
	ICU_unmask_int(TIMER_INT); \
	T1CRA=0x8000; \
	T1CKC=0x4; \
	T1CTRL=0x2+16 
	
#define WATCHDOG_START \
	T1ICTL=16; \
	T1ICLR |= 1

#define WATCHDOG_STOP \
	T1ICTL=0 


#define TOUCH_WATCHDOG(interval) \
	WatchdogTime = interval

/* event table variable */

#ifndef parser_c
extern volatile unsigned int event_table; 
extern volatile unsigned int WatchdogTime;
#else
volatile unsigned int event_table = 0;     // First initialization
volatile unsigned int WatchdogTime = WATCHDOG_COUNT;
#endif


/* Send event prototype */

#define send_event(X) event_table |= X
#define clear_event(X) { \
	_di_(); \
	event_table &= ~X; \
	_ei_(); \
}


#define IENAM0_LAST			7
#define ISTAT0_LAST			7

#define PSR_E_BIT   			9
#define PSR_E_BIT_MASK			(1 << PSR_E_BIT)
#define PSR_I_BIT  			11
#define PSR_I_BIT_MASK			(1 << PSR_I_BIT)

#define ICU_CLEAR_INT(int_no)           if (int_no < 16) IECLR0 = (1 << (int_no % 16)); else IECLR1 = (1 << (int_no % 16))
#define ICU_MASK_INT(int_no)            if (int_no < 16) IENAM0 &= ~(1 << (int_no % 16)); else IENAM1 &= ~(1 << (int_no % 16))
#define ICU_UNMASK_INT(int_no)          if (int_no < 16) IENAM0 |= (1 << (int_no % 16)); else IENAM1 |= (1 << (int_no % 16))
#define ICU_INT_IS_MASKED(int_no)       ((int_no < 16) ? ((IENAM0 & (1 << (int_no % 16))) == 0): ((IENAM1 & (1 << (int_no % 16)) ) == 0) )
#define ICU_INT_IS_UNMASKED(int_no)     ((int_no < 16) ? (IENAM0 & (1 << (int_no % 16))) : (IENAM1 & (1 << (int_no % 16)) ) )
#define ICU_STATUS_INT(int_no)			((int_no < 16) ? (ISTAT0 & (1 << (int_no % 16))) : (ISTAT1 & (1 << (int_no % 16)) ) )

#define ICU_enable_interrupts()        _ei_()
#define ICU_disable_interrupts()       _di_()

extern int main();
extern int panic(char *str);
extern void null_handler(void);
extern void ICU_init(void);
extern void ICU_mask_int(int int_no);
extern void ICU_unmask_int(int int_no);
extern void ICU_clear_int(/* int_no */);
extern void ICU_install_handler(int int_no, handler_t handler_func);


#endif __icu_h__