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memory: MemoryRegion: Add size property

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To allow devices to dynamically resize the device. The motivation is
to allow devices with variable size to init their memory_region
without size early and then correctly populate size at realize() time.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Crosthwaite 2014-06-05 23:17:35 -07:00 committed by Paolo Bonzini
parent d33382da9a
commit 52aef7bba7
1 changed files with 13 additions and 0 deletions
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13
memory.c
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@ -971,6 +971,15 @@ static bool memory_region_get_may_overlap(Object *obj, Error **errp)
return mr->may_overlap;
}
static void memory_region_get_size(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
MemoryRegion *mr = MEMORY_REGION(obj);
uint64_t value = memory_region_size(mr);
visit_type_uint64(v, &value, name, errp);
}
static void memory_region_initfn(Object *obj)
{
MemoryRegion *mr = MEMORY_REGION(obj);
@ -1002,6 +1011,10 @@ static void memory_region_initfn(Object *obj)
memory_region_get_may_overlap,
NULL, /* memory_region_set_may_overlap */
&error_abort);
object_property_add(OBJECT(mr), "size", "uint64",
memory_region_get_size,
NULL, /* memory_region_set_size, */
NULL, NULL, &error_abort);
}
static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,