34 lines
1.0 KiB
C
34 lines
1.0 KiB
C
/**
|
|
* PIT section header of rockOS
|
|
* Copyright (C) 2022 Furkan Mudanyali
|
|
*
|
|
* This program 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#define SUBTICKS_PER_TICK 100
|
|
|
|
#define PIT_0 0x40
|
|
#define PIT_1 0x41
|
|
#define PIT_2 0x42
|
|
#define PIT_CONTROL 0x43
|
|
|
|
#define PIT_MASK 0xFF
|
|
#define PIT_SCALE 1193180
|
|
#define PIT_SET 0x36
|
|
|
|
void timer_phase(uint32_t hz);
|
|
void timer_handler(void* frame);
|
|
uint64_t get_ticks(); |