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
@@ -5,14 +5,21 @@
 #include <zinnia/acpi.h>
 #include <zinnia/alloc.h>
 #include <zinnia/cmdline.h>
+#include <zinnia/irq.h>
+#include <zinnia/pci.h>
 #include <zinnia/percpu.h>
 #include <zinnia/print.h>
+#include <zinnia/sched.h>
 #include <zinnia/types.h>
+#include <zinnia/workqueue.h>
+#include <uacpi/event.h>
+#include <uacpi/sleep.h>
 #include <uacpi/status.h>
 #include <uacpi/tables.h>
 #include <uacpi/uacpi.h>

 phys_t acpi_rsdp_addr = 0;
+struct workqueue* acpi_workqueue;

 static char table_buf[0x1000];

@@ -45,3 +52,66 @@ static bool acpi_stage_init(struct boot_info* info) {
 INIT_TASK(acpi_stage, "dev.acpi", acpi_stage_init);
 INIT_DEPENDS(acpi_stage, mem_stage);
 INIT_ENTAILS(acpi_stage, percpu_stage);
+
+static bool namespace_done;
+
+[[__init]]
+static void acpi_namespace_init(struct boot_info*) {
+    errno_t error = workqueue_create("acpi", SCHED_PRIO_WORK_HIGH, &acpi_workqueue);
+    if (error) {
+        log_err("Failed to create the ACPI workqueue (%i)\n", error);
+        return;
+    }
+
+    uacpi_status status = uacpi_initialize(0);
+    if (status != UACPI_STATUS_OK) {
+        log_err("Initialization failed with error \"%s\"!\n", uacpi_status_to_string(status));
+        return;
+    }
+
+    status = uacpi_namespace_load();
+    if (status != UACPI_STATUS_OK) {
+        log_err("Namespace loading failed with error \"%s\"!\n", uacpi_status_to_string(status));
+        return;
+    }
+
+    status = uacpi_namespace_initialize();
+    if (status != UACPI_STATUS_OK) {
+        log_err("Namespace initialization failed with error \"%s\"!\n", uacpi_status_to_string(status));
+        return;
+    }
+
+    status = uacpi_finalize_gpe_initialization();
+    if (status != UACPI_STATUS_OK)
+        log_warn("GPE initialization failed with error \"%s\"!\n", uacpi_status_to_string(status));
+
+    namespace_done = true;
+}
+INIT_TASK(acpi_namespace_stage, "dev.acpi.namespace", acpi_namespace_init);
+INIT_DEPENDS(acpi_namespace_stage, acpi_stage, workqueue_stage);
+#if CONFIG_PCI
+INIT_DEPENDS(acpi_namespace_stage, pci_stage);
+#endif
+
+errno_t acpi_reboot() {
+    if (!namespace_done)
+        return ENOSYS;
+
+    uacpi_status status = uacpi_reboot();
+    log_err("Failed to reset the system: %s\n", uacpi_status_to_string(status));
+    return EIO;
+}
+
+errno_t acpi_power_off() {
+    if (!namespace_done)
+        return ENOSYS;
+
+    uacpi_status status = uacpi_prepare_for_sleep_state(UACPI_SLEEP_STATE_S5);
+    if (status == UACPI_STATUS_OK) {
+        irq_lock();
+        status = uacpi_enter_sleep_state(UACPI_SLEEP_STATE_S5);
+        irq_unlock();
+    }
+    log_err("Failed to power off the system: %s\n", uacpi_status_to_string(status));
+    return EIO;
+}