Changeset 89 for trunk/hal/x86_64/core/hal_acpi.c

Timestamp:

Jun 29, 2017, 9:54:01 AM (7 years ago)

Author:

max@…

Message:

Parse the IOAPIC structure in ACPI, map the IOAPIC, and enable
the keyboard interrupt. Its queue is not flushed yet.

File:

• trunk/hal/x86_64/core/hal_acpi.c (modified) (1 diff)

trunk/hal/x86_64/core/hal_acpi.c

@@ -109 +109 @@
 /* -------------------------------------------------------------------------- */
 
+static void hal_acpi_parse_ioapic(madt_ioapic_t *ioapic)
+{
+        extern paddr_t ioapic_pa;
+        ioapic_pa = ioapic->Address;
+        x86_printf("-> IOAPIC address: %Z\n", ioapic_pa);
+}
+
 static void hal_acpi_parse_madt(madt_t *madt)
 {
+        void *ptr, *end;
+        subheader_t *sub;
+
         extern paddr_t lapic_pa;
         lapic_pa = (paddr_t)madt->Address;
+
+        ptr = (void *)(madt + 1);
+        end = (void *)madt + madt->Header.Length;
+
+        while (ptr < end) {
+                sub = (subheader_t *)ptr;
+                if (sub->Type == ACPI_MADT_TYPE_IO_APIC) {
+                        hal_acpi_parse_ioapic((madt_ioapic_t *)sub);
+                }
+                // XXX: handle lapic override
+                ptr += sub->Length;
+        }
+
         x86_printf("-> LAPIC address: %Z\n", lapic_pa);
 }