Subversion Repositories freemyipod

//

//

//    Copyright 2010 TheSeven

//

//

//    This file is part of emBIOS.

//

//    emBIOS is free software: you can redistribute it and/or

//    modify it under the terms of the GNU General Public License as

//    published by the Free Software Foundation, either version 2 of the

//    License, or (at your option) any later version.

//

//    emBIOS is distributed in the hope that it will be useful,

//    but WITHOUT ANY WARRANTY; without even the implied warranty of

//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

//    See the GNU General Public License for more details.

//

//    You should have received a copy of the GNU General Public License along

//    with emBIOS.  If not, see <http://www.gnu.org/licenses/>.

//

//

#ifndef __TIMER_H__

#define __TIMER_H__

#include "global.h"

#define TIME_AFTER(a,b)         ((long)(b) - (long)(a) < 0)

#define TIME_BEFORE(a,b)        TIME_AFTER(b,a)

#define TIMEOUT_EXPIRED(a,b)    TIME_AFTER(USEC_TIMER,a + b)

uint64_t read_native_timer();

#define NATIVE_TIMER (read_native_timer())

uint32_t read_usec_timer();

#define USEC_TIMER (read_usec_timer())

static inline void udelay(long duration)  /* in usec steps */

{

    long timestamp = USEC_TIMER;

    while (!TIMEOUT_EXPIRED(timestamp, duration));

}

void setup_tick() INITCODE_ATTR;

void INT_TIMERB() ICODE_ATTR;

#endif