Atmosphere/exosphere/sc7fw/src/timer.h

/*
 * Copyright (c) 2018-2020 Atmosphère-NX
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef EXOSPHERE_BPMPFW_TIMER_H
#define EXOSPHERE_BPMPFW_TIMER_H

#include "utils.h"

#define TIMERUS_CNTR_1US_0 MAKE_REG32(0x60005010)

static inline void timer_wait(uint32_t microseconds) {
    uint32_t old_time = TIMERUS_CNTR_1US_0;
    while (TIMERUS_CNTR_1US_0 - old_time <= microseconds) {
        /* Spin-lock. */
    }
}

void spinlock_wait(uint32_t count);

#endif