Integrate uACPI

kernel/hal/x86_64/uACPI/include/uacpi/io.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <uacpi/types.h>
+#include <uacpi/acpi.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef UACPI_BAREBONES_MODE
+
+uacpi_status uacpi_gas_read(const struct acpi_gas *gas, uacpi_u64 *value);
+uacpi_status uacpi_gas_write(const struct acpi_gas *gas, uacpi_u64 value);
+
+typedef struct uacpi_mapped_gas uacpi_mapped_gas;
+
+/*
+ * Map a GAS for faster access in the future. The handle returned via
+ * 'out_mapped' must be freed & unmapped using uacpi_unmap_gas() when
+ * no longer needed.
+ */
+uacpi_status uacpi_map_gas(const struct acpi_gas *gas, uacpi_mapped_gas **out_mapped);
+void uacpi_unmap_gas(uacpi_mapped_gas*);
+
+/*
+ * Same as uacpi_gas_{read,write} but operates on a pre-mapped handle for faster
+ * access and/or ability to use in critical sections/irq contexts.
+ */
+uacpi_status uacpi_gas_read_mapped(const uacpi_mapped_gas *gas, uacpi_u64 *value);
+uacpi_status uacpi_gas_write_mapped(const uacpi_mapped_gas *gas, uacpi_u64 value);
+
+#endif // !UACPI_BAREBONES_MODE
+
+#ifdef __cplusplus
+}
+#endif