memory: MemoryRegion: Add size property
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>
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memory.c
13
memory.c
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@ -971,6 +971,15 @@ static bool memory_region_get_may_overlap(Object *obj, Error **errp)
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return mr->may_overlap;
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return mr->may_overlap;
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}
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}
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static void memory_region_get_size(Object *obj, Visitor *v, void *opaque,
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const char *name, Error **errp)
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{
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MemoryRegion *mr = MEMORY_REGION(obj);
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uint64_t value = memory_region_size(mr);
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visit_type_uint64(v, &value, name, errp);
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}
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static void memory_region_initfn(Object *obj)
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static void memory_region_initfn(Object *obj)
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{
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{
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MemoryRegion *mr = MEMORY_REGION(obj);
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MemoryRegion *mr = MEMORY_REGION(obj);
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@ -1002,6 +1011,10 @@ static void memory_region_initfn(Object *obj)
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memory_region_get_may_overlap,
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memory_region_get_may_overlap,
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NULL, /* memory_region_set_may_overlap */
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NULL, /* memory_region_set_may_overlap */
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&error_abort);
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&error_abort);
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object_property_add(OBJECT(mr), "size", "uint64",
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memory_region_get_size,
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NULL, /* memory_region_set_size, */
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NULL, NULL, &error_abort);
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}
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}
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static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
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static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
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