memory: export AddressSpace
The DMA API will use an AddressSpace to differentiate among different
initiators.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/memory.c b/memory.c
index 7e9e373..431a867 100644
--- a/memory.c
+++ b/memory.c
@@ -216,17 +216,8 @@
unsigned nr_allocated;
};
-typedef struct AddressSpace AddressSpace;
typedef struct AddressSpaceOps AddressSpaceOps;
-/* A system address space - I/O, memory, etc. */
-struct AddressSpace {
- MemoryRegion *root;
- FlatView *current_map;
- int ioeventfd_nb;
- MemoryRegionIoeventfd *ioeventfds;
-};
-
#define FOR_EACH_FLAT_RANGE(var, view) \
for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
@@ -1510,7 +1501,7 @@
QTAILQ_REMOVE(&memory_listeners, listener, link);
}
-static void address_space_init(AddressSpace *as, MemoryRegion *root)
+void address_space_init(AddressSpace *as, MemoryRegion *root)
{
memory_region_transaction_begin();
as->root = root;
diff --git a/memory.h b/memory.h
index 37ce151..a1d75e7 100644
--- a/memory.h
+++ b/memory.h
@@ -157,6 +157,19 @@
#define PORTIO_END_OF_LIST() { }
+typedef struct AddressSpace AddressSpace;
+
+/**
+ * AddressSpace: describes a mapping of addresses to #MemoryRegion objects
+ */
+struct AddressSpace {
+ /* All fields are private. */
+ MemoryRegion *root;
+ struct FlatView *current_map;
+ int ioeventfd_nb;
+ struct MemoryRegionIoeventfd *ioeventfds;
+};
+
typedef struct MemoryRegionSection MemoryRegionSection;
/**
@@ -776,6 +789,14 @@
void mtree_info(fprintf_function mon_printf, void *f);
+/**
+ * address_space_init: initializes an address space
+ *
+ * @as: an uninitialized #AddressSpace
+ * @root: a #MemoryRegion that routes addesses for the address space
+ */
+void address_space_init(AddressSpace *as, MemoryRegion *root);
+
#endif
#endif
