Atmosphere/thermosphere/src/platform/tegra/timers.h
2021-02-19 21:51:19 +00:00

95 lines
2.6 KiB
C

/*
* Copyright (c) 2018-2019 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/>.
*/
#pragma once
#include "../../utils.h"
#define TIMERS_BASE 0x60005000
#define MAKE_TIMERS_REG(n) MAKE_REG32(TIMERS_BASE + n)
#define TIMERUS_CNTR_1US_0 MAKE_TIMERS_REG(0x10)
#define TIMERUS_USEC_CFG_0 MAKE_TIMERS_REG(0x14)
#define SHARED_INTR_STATUS_0 MAKE_TIMERS_REG(0x1A0)
#define SHARED_TIMER_SECURE_CFG_0 MAKE_TIMERS_REG(0x1A4)
#define RTC_BASE 0x7000E000
#define MAKE_RTC_REG(n) MAKE_REG32(RTC_BASE + n)
#define RTC_SECONDS MAKE_RTC_REG(0x08)
#define RTC_SHADOW_SECONDS MAKE_RTC_REG(0x0C)
#define RTC_MILLI_SECONDS MAKE_RTC_REG(0x10)
typedef struct {
uint32_t CONFIG;
uint32_t STATUS;
uint32_t COMMAND;
uint32_t PATTERN;
} watchdog_timers_t;
#define GET_WDT(n) ((volatile watchdog_timers_t *)(TIMERS_BASE + 0x100 + 0x20 * n))
#define WDT_REBOOT_PATTERN 0xC45A
#define GET_WDT_REBOOT_CFG_REG(n) MAKE_REG32(TIMERS_BASE + 0x60 + 0x8 * n)
void wait(uint32_t microseconds);
static inline uint32_t get_time_s(void) {
return RTC_SECONDS;
}
static inline uint32_t get_time_ms(void) {
return (RTC_MILLI_SECONDS | (RTC_SHADOW_SECONDS << 10));
}
static inline uint32_t get_time_us(void) {
return TIMERUS_CNTR_1US_0;
}
/**
* Returns the time in microseconds.
*/
static inline uint32_t get_time(void) {
return get_time_us();
}
/**
* Returns the number of microseconds that have passed since a given get_time().
*/
static inline uint32_t get_time_since(uint32_t base) {
return get_time_us() - base;
}
/**
* Delays for a given number of microseconds.
*/
static inline void udelay(uint32_t usecs) {
uint32_t start = get_time_us();
while (get_time_us() - start < usecs);
}
/**
* Delays until a number of usecs have passed since an absolute start time.
*/
static inline void udelay_absolute(uint32_t start, uint32_t usecs) {
while (get_time_us() - start < usecs);
}
/**
* Delays for a given number of milliseconds.
*/
static inline void mdelay(uint32_t msecs) {
uint32_t start = get_time_ms();
while (get_time_ms() - start < msecs);
}