22 lines
507 B
C
22 lines
507 B
C
#include <kernel/kernel.h>
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#include <kernel/pit.h>
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#include <kernel/io.h>
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#include <kernel/pic.h>
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extern kernel_ctx_t ctx;
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void pit_init(void) {
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outb(PIT_MODE_CMD, PIT_CHAN0 | PIT_LOHIGH | PIT_MODE2);
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outb(PIT_CHAN0_DATA, (uint8_t)(DIVISOR & 0xff));
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outb(PIT_CHAN0_DATA, (uint8_t)((DIVISOR & 0xff00) >> 8));
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}
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void pit_handler(void) {
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ctx.ticks++;
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outb(PIT_CHAN0_DATA, (uint8_t)(DIVISOR & 0xff));
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outb(PIT_CHAN0_DATA, (uint8_t)((DIVISOR & 0xff00) >> 8));
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pic_send_eoi(0);
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}
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