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memory: export AddressSpace

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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>
This commit is contained in:
Avi Kivity 2012-10-02 14:59:23 +02:00
parent 8786db7cb9
commit 9ad2bbc167
2 changed files with 22 additions and 10 deletions
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11
memory.c
View File

@ -216,17 +216,8 @@ struct FlatView {
unsigned nr_allocated; unsigned nr_allocated;
}; };
typedef struct AddressSpace AddressSpace;
typedef struct AddressSpaceOps AddressSpaceOps; 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) \ #define FOR_EACH_FLAT_RANGE(var, view) \
for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var) for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
@ -1510,7 +1501,7 @@ void memory_listener_unregister(MemoryListener *listener)
QTAILQ_REMOVE(&memory_listeners, listener, link); 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(); memory_region_transaction_begin();
as->root = root; as->root = root;

21
memory.h
View File

@ -157,6 +157,19 @@ struct MemoryRegionPortio {
#define PORTIO_END_OF_LIST() { } #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; typedef struct MemoryRegionSection MemoryRegionSection;
/** /**
@ -776,6 +789,14 @@ void memory_global_dirty_log_stop(void);
void mtree_info(fprintf_function mon_printf, void *f); 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
#endif #endif