major refactorings

Signed-off-by: kaguya3311 <kaguya3311@national.shitposting.agency>
2026-05-18 04:02:59 -04:00
parent f7aa6f913a
commit b28a6bcf29
211 changed files with 17699 additions and 8107 deletions
@@ -0,0 +1,68 @@
+#include <uacpi/tables.h>
+#include "madt.h"
+#include <stddef.h>
+#include "libk/debug.h"
+#include "arch/x86_64/asm/asm.h"
+
+
+struct madt *madt;
+
+lapic_vec_t madt_local_apics;
+ioapic_vec_t madt_io_apics;
+iso_vec_t madt_isos;
+nmi_vec_t madt_nmis;
+
+uintptr_t lapic_addr = 0;
+
+uintptr_t acpi_get_lapic(void) {
+	return lapic_addr;
+}
+    
+void madt_init(void) {
+	vec_init(&madt_local_apics);
+	vec_init(&madt_io_apics);
+	vec_init(&madt_isos);
+	vec_init(&madt_nmis);
+
+    struct uacpi_table madt_table;
+    uacpi_status st = uacpi_table_find_by_signature("APIC", &madt_table);
+    if (uacpi_unlikely_error(st)) {
+        panic("Could not find MADT: %s\n", uacpi_status_to_string(st));
+    }
+
+	madt = (struct madt *)madt_table.ptr;
+
+    lapic_addr = madt->local_controller_addr;
+	kprintf("MADT: MADT at %p\n", madt);
+	for (uint8_t *madt_ptr = (uint8_t *)madt->madt_entries_begin;
+		 (uintptr_t)madt_ptr < (uintptr_t)madt + madt->sdt.length;
+		 madt_ptr += *(madt_ptr + 1)) {
+		switch (*(madt_ptr)) {
+			case 0:
+				// Processor local APIC
+				kprintf("MADT: Got local APIC 0x%x\n", madt_local_apics.length);
+				vec_push(&madt_local_apics, (void *)madt_ptr);
+				break;
+			case 1:
+				// I/O APIC
+				kprintf("MADT: Got IO APIC 0x%x\n", madt_io_apics.length);
+				vec_push(&madt_io_apics, (void *)madt_ptr);
+				break;
+			case 2:
+				// Interrupt source override
+				kprintf("MADT: Got ISO 0x%x\n", madt_isos.length);
+				vec_push(&madt_isos, (void *)madt_ptr);
+				break;
+			case 4:
+				// NMI
+				kprintf("MADT: Got NMI 0x%x\n", madt_nmis.length);
+				vec_push(&madt_nmis, (void *)madt_ptr);
+				break;
+			case 5:
+				// Local APIC address override
+				lapic_addr = QWORD_PTR(madt_ptr + 4);
+				break;
+		}
+	}
+
+}