dev/acpi: Implement uACPI kernel APIs

2026-10-28 22:07:39 +01:00
parent 8f30525cab
commit b52a3949a5
11 changed files with 672 additions and 11 deletions
@@ -61,11 +61,7 @@ static void apic_msi_eoi(struct irq_line* self) {
    lapic_eoi(&percpu_ref(arch_data)->lapic);
 }

-errno_t arch_irq_alloc_msi(struct msi_line** out) {
-    struct apic_msi_line* line = mem_alloc(sizeof(*line), 0);
-    if (!line)
-        return ENOMEM;
-
+errno_t apic_alloc_vector(struct irq_line* line, uint8_t* out_vector, uint32_t* out_lapic) {
    irq_lock();
    struct arch_percpu* arch_cpu = percpu_ref(arch_data);
    size_t slot;
@@ -75,20 +71,39 @@ errno_t arch_irq_alloc_msi(struct msi_line** out) {
    }
    if (slot == ARRAY_SIZE(arch_cpu->irq_lines)) {
        irq_unlock();
-        mem_free(line);
        return ENOSPC;
    }

+    *out_vector = slot + 0x20;
+    *out_lapic = arch_cpu->lapic.id;
+    arch_cpu->irq_lines[slot] = line;
+    irq_unlock();
+    return 0;
+}
+
+void apic_free_vector(uint8_t vector) {
+    irq_lock();
+    percpu_ref(arch_data)->irq_lines[vector - 0x20] = nullptr;
+    irq_unlock();
+}
+
+errno_t arch_irq_alloc_msi(struct msi_line** out) {
+    struct apic_msi_line* line = mem_alloc(sizeof(*line), 0);
+    if (!line)
+        return ENOMEM;
+
    line->msi.line.set_config = apic_msi_set_config;
    line->msi.line.mask = apic_msi_mask;
    line->msi.line.unmask = apic_msi_unmask;
    line->msi.line.eoi = apic_msi_eoi;
    line->msi.msg_addr = apic_msi_msg_addr;
    line->msi.msg_data = apic_msi_msg_data;
-    line->vector = slot + 0x20;
-    line->lapic = arch_cpu->lapic.id;
-    arch_cpu->irq_lines[slot] = &line->msi.line;
-    irq_unlock();
+
+    errno_t status = apic_alloc_vector(&line->msi.line, &line->vector, &line->lapic);
+    if (status) {
+        mem_free(line);
+        return status;
+    }

    *out = &line->msi;
    return 0;