1 files changed, 82 insertions, 0 deletions
diff --git a/qemu/include/sysemu/memory_mapping.h b/qemu/include/sysemu/memory_mapping.h
new file mode 100644
index 000000000..a75d59a55
--- /dev/null
+++ b/qemu/include/sysemu/memory_mapping.h
@@ -0,0 +1,82 @@
+/*
+ * QEMU memory mapping
+ *
+ * Copyright Fujitsu, Corp. 2011, 2012
+ *
+ * Authors:
+ *     Wen Congyang <wency@cn.fujitsu.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef MEMORY_MAPPING_H
+#define MEMORY_MAPPING_H
+
+#include "qemu/queue.h"
+#include "qemu/typedefs.h"
+
+typedef struct GuestPhysBlock {
+    /* visible to guest, reflects PCI hole, etc */
+    hwaddr target_start;
+
+    /* implies size */
+    hwaddr target_end;
+
+    /* points into host memory */
+    uint8_t *host_addr;
+
+    QTAILQ_ENTRY(GuestPhysBlock) next;
+} GuestPhysBlock;
+
+/* point-in-time snapshot of guest-visible physical mappings */
+typedef struct GuestPhysBlockList {
+    unsigned num;
+    QTAILQ_HEAD(GuestPhysBlockHead, GuestPhysBlock) head;
+} GuestPhysBlockList;
+
+/* The physical and virtual address in the memory mapping are contiguous. */
+typedef struct MemoryMapping {
+    hwaddr phys_addr;
+    target_ulong virt_addr;
+    ram_addr_t length;
+    QTAILQ_ENTRY(MemoryMapping) next;
+} MemoryMapping;
+
+struct MemoryMappingList {
+    unsigned int num;
+    MemoryMapping *last_mapping;
+    QTAILQ_HEAD(, MemoryMapping) head;
+};
+
+/*
+ * add or merge the memory region [phys_addr, phys_addr + length) into the
+ * memory mapping's list. The region's virtual address starts with virt_addr,
+ * and is contiguous. The list is sorted by phys_addr.
+ */
+void memory_mapping_list_add_merge_sorted(MemoryMappingList *list,
+                                          hwaddr phys_addr,
+                                          hwaddr virt_addr,
+                                          ram_addr_t length);
+
+void memory_mapping_list_free(MemoryMappingList *list);
+
+void memory_mapping_list_init(MemoryMappingList *list);
+
+void guest_phys_blocks_free(GuestPhysBlockList *list);
+void guest_phys_blocks_init(GuestPhysBlockList *list);
+void guest_phys_blocks_append(GuestPhysBlockList *list);
+
+void qemu_get_guest_memory_mapping(MemoryMappingList *list,
+                                   const GuestPhysBlockList *guest_phys_blocks,
+                                   Error **errp);
+
+/* get guest's memory mapping without do paging(virtual address is 0). */
+void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list,
+                                  const GuestPhysBlockList *guest_phys_blocks);
+
+void memory_mapping_filter(MemoryMappingList *list, int64_t begin,
+                           int64_t length);
+
+#endif