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/* Project:     OSLib
 * Description: The OS Construction Kit
 * Date:                1.6.2000
 * Idea by:             Luca Abeni & Gerardo Lamastra
 *
 * OSLib is an SO project aimed at developing a common, easy-to-use
 * low-level infrastructure for developing OS kernels and Embedded
 * Applications; it partially derives from the HARTIK project but it
 * currently is independently developed.
 *
 * OSLib is distributed under GPL License, and some of its code has
 * been derived from the Linux kernel source; also some important
 * ideas come from studying the DJGPP go32 extender.
 *
 * We acknowledge the Linux Community, Free Software Foundation,
 * D.J. Delorie and all the other developers who believe in the
 * freedom of software and ideas.
 *
 * For legalese, check out the included GPL license.
 */

/*      Time event management functions */

#ifndef __LL_SYS_LL_EVENT_H__
#define __LL_SYS_LL_EVENT_H__

#include <ll/i386/defs.h>
#include <ll/sys/ll/time.h>
#include <ll/sys/ll/ll-data.h>

BEGIN_DEF

#define MAX_EVENT 250

struct event {
        struct event *next;             /* Next event in an event queue */
        void *par;                      /* Handler's parameter          */
        void (*handler)(void *p);       /* Event Handler                */
        struct timespec time;           /* Time at which the event
                                           will raise */
        int index;                      /* Event ID                     */
};

/* Event management functions... */

void event_setprologue(void *p);
void event_setepilogue(void *p);

void event_setlasthandler(void *p);

int (*event_post)(struct timespec time, void (*handler)(void *p), void *par);
int (*event_delete)(int index);

int oneshot_event_post(struct timespec time, void (*handler)(void *p), void *par);
int oneshot_event_delete(int index);
int periodic_event_post(struct timespec time, void (*handler)(void *p), void *par);
int periodic_event_delete(int index);
void event_init(struct ll_initparms *l);

/* Interrupt handler entry */
struct intentry {
        void *par;                      /* Handler's parameter          */
        void (*handler)(void *p);       /* Interrupt Handler            */
        int index;                      /* Interrupt number             */
        DWORD status;                   /* Interrupt status
                                                no handler --> FREE
                                                handler --> ASSIGNED
                                                being served --> BUSY
                                                                        */
        DWORD flags;
};

#define INT_PREEMPTABLE 1
#define INT_FORCE       2

#define INTSTAT_FREE            1
#define INTSTAT_ASSIGNED        2
#define INTSTAT_BUSY            3

void irq_init(void);
int irq_bind(int irq, void (*handler)(void *p), DWORD flags);
int ll_ActiveInt();

END_DEF
#endif