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diff --git a/src/include/exec/ioport.h b/src/include/exec/ioport.h
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+/*
+ * defines ioport related functions
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**************************************************************************
+ * IO ports API
+ */
+
+#ifndef IOPORT_H
+#define IOPORT_H
+
+#include "qemu-common.h"
+#include "qom/object.h"
+#include "exec/memory.h"
+
+typedef uint32_t pio_addr_t;
+#define FMT_pioaddr PRIx32
+
+#define MAX_IOPORTS (64 * 1024)
+#define IOPORTS_MASK (MAX_IOPORTS - 1)
+
+typedef struct MemoryRegionPortio {
+ uint32_t offset;
+ uint32_t len;
+ unsigned size;
+ uint32_t (*read)(void *opaque, uint32_t address);
+ void (*write)(void *opaque, uint32_t address, uint32_t data);
+ uint32_t base; /* private field */
+} MemoryRegionPortio;
+
+#define PORTIO_END_OF_LIST() { }
+
+#ifndef CONFIG_USER_ONLY
+extern const MemoryRegionOps unassigned_io_ops;
+#endif
+
+void cpu_outb(pio_addr_t addr, uint8_t val);
+void cpu_outw(pio_addr_t addr, uint16_t val);
+void cpu_outl(pio_addr_t addr, uint32_t val);
+uint8_t cpu_inb(pio_addr_t addr);
+uint16_t cpu_inw(pio_addr_t addr);
+uint32_t cpu_inl(pio_addr_t addr);
+
+typedef struct PortioList {
+ const struct MemoryRegionPortio *ports;
+ Object *owner;
+ struct MemoryRegion *address_space;
+ unsigned nr;
+ struct MemoryRegion **regions;
+ void *opaque;
+ const char *name;
+ bool flush_coalesced_mmio;
+} PortioList;
+
+void portio_list_init(PortioList *piolist, Object *owner,
+ const struct MemoryRegionPortio *callbacks,
+ void *opaque, const char *name);
+void portio_list_set_flush_coalesced(PortioList *piolist);
+void portio_list_destroy(PortioList *piolist);
+void portio_list_add(PortioList *piolist,
+ struct MemoryRegion *address_space,
+ uint32_t addr);
+void portio_list_del(PortioList *piolist);
+
+#endif /* IOPORT_H */
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