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Fix PIC, add small delays when initializing

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This commit is contained in:
Kamil Kowalczyk
2025-11-18 23:27:49 +01:00
parent 638214a0e2
commit 28c95303e9
8 changed files with 51 additions and 24 deletions
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30
kernel/intr/pic.c
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@ -25,22 +25,44 @@
void intr_pic_init(void) {
io_out8(PIC1_CMD, ICW1_INIT | ICW1_ICW4);
io_wait();
io_out8(PIC2_CMD, ICW1_INIT | ICW1_ICW4);
io_wait();
io_out8(PIC1_DATA, INTR_IRQBASE);
io_wait();
io_out8(PIC2_DATA, INTR_IRQBASE+8);
io_wait();
io_out8(PIC1_DATA, 2);
io_wait();
io_out8(PIC2_DATA, 2);
io_wait();
io_out8(PIC1_DATA, ICW4_8086);
io_wait();
io_out8(PIC2_DATA, ICW4_8086);
io_wait();
io_out8(PIC1_DATA, 0);
io_out8(PIC2_DATA, 0);
intr_pic_mask();
}
void intr_pic_eoi(void) {
io_out8(PIC2_CMD, PIC_EOI);
void intr_pic_mask(void) {
io_out8(PIC1_DATA, 0xFF);
io_wait();
io_out8(PIC2_DATA, 0xFF);
io_wait();
}
void intr_pic_unmask(void) {
io_out8(PIC1_DATA, 0);
io_wait();
io_out8(PIC2_DATA, 0);
io_wait();
}
void intr_pic_eoi(bool pic2) {
if (pic2)
io_out8(PIC2_CMD, PIC_EOI);
io_out8(PIC1_CMD, PIC_EOI);
}