1 files changed, 71 insertions, 0 deletions
diff --git a/include/system/xen-mapcache.h b/include/system/xen-mapcache.h
new file mode 100644
index 0000000000..b68f196ddd
--- /dev/null
+++ b/include/system/xen-mapcache.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2011       Citrix Ltd.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef XEN_MAPCACHE_H
+#define XEN_MAPCACHE_H
+
+#include "exec/cpu-common.h"
+#include "system/xen.h"
+
+typedef hwaddr (*phys_offset_to_gaddr_t)(hwaddr phys_offset,
+                                         ram_addr_t size);
+#ifdef CONFIG_XEN_IS_POSSIBLE
+
+void xen_map_cache_init(phys_offset_to_gaddr_t f,
+                        void *opaque);
+uint8_t *xen_map_cache(MemoryRegion *mr, hwaddr phys_addr, hwaddr size,
+                       ram_addr_t ram_addr_offset,
+                       uint8_t lock, bool dma,
+                       bool is_write);
+ram_addr_t xen_ram_addr_from_mapcache(void *ptr);
+void xen_invalidate_map_cache_entry(uint8_t *buffer);
+void xen_invalidate_map_cache(void);
+uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
+                                 hwaddr new_phys_addr,
+                                 hwaddr size);
+#else
+
+static inline void xen_map_cache_init(phys_offset_to_gaddr_t f,
+                                      void *opaque)
+{
+}
+
+static inline uint8_t *xen_map_cache(MemoryRegion *mr,
+                                     hwaddr phys_addr,
+                                     hwaddr size,
+                                     ram_addr_t ram_addr_offset,
+                                     uint8_t lock,
+                                     bool dma,
+                                     bool is_write)
+{
+    abort();
+}
+
+static inline ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
+{
+    abort();
+}
+
+static inline void xen_invalidate_map_cache_entry(uint8_t *buffer)
+{
+}
+
+static inline void xen_invalidate_map_cache(void)
+{
+}
+
+static inline uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
+                                               hwaddr new_phys_addr,
+                                               hwaddr size)
+{
+    abort();
+}
+
+#endif
+
+#endif /* XEN_MAPCACHE_H */