os: add tentative IoRegionType

libraries/libstratosphere/include/stratosphere/os/os_io_region_api.hpp

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/os/os_memory_permission.hpp>
+
+namespace ams::os {
+
+    struct IoRegionType;
+
+    Result CreateIoRegion(IoRegionType *io_region, Handle io_pool_handle, uintptr_t address, size_t size, MemoryMapping mapping, MemoryPermission permission);
+
+    void AttachIoRegion(IoRegionType *io_region, size_t size, Handle handle, bool managed);
+
+    void DestroyIoRegion(IoRegionType *io_region);
+
+    Handle GetIoRegionHandle(const IoRegionType *io_region);
+
+    Result MapIoRegion(void **out, IoRegionType *io_region, MemoryPermission perm);
+    void UnmapIoRegion(IoRegionType *io_region);
+
+}