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memory-device: factor out get_memory_region() from pc-dimm

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The memory region is necessary for plugging/unplugging a memory device.
The region size (via get_region_size()) is no longer sufficient, as
besides the alignment, also the region itself is required in order to
add it to the device memory region of the machine via
- memory_region_add_subregion
- memory_region_del_subregion

So, to factor out plugging/unplugging of memory devices from pc-dimm
code, we have to factor out access to the memory region first.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20181005092024.14344-11-david@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
David Hildenbrand 2018-10-05 11:20:18 +02:00 • committed by Eduardo Habkost
parent 946d6154ab
commit 3a0a2b0a2b
4 changed files with 39 additions and 16 deletions
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9
hw/mem/nvdimm.c
View file

@ -27,6 +27,7 @@
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "hw/mem/nvdimm.h"
#include "hw/mem/memory-device.h"
static void nvdimm_get_label_size(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
@ -118,9 +119,10 @@ static void nvdimm_prepare_memory_region(NVDIMMDevice *nvdimm, Error **errp)
nvdimm->nvdimm_mr->align = align;
}
static MemoryRegion *nvdimm_get_memory_region(PCDIMMDevice *dimm, Error **errp)
static MemoryRegion *nvdimm_md_get_memory_region(MemoryDeviceState *md,
Error **errp)
{
NVDIMMDevice *nvdimm = NVDIMM(dimm);
NVDIMMDevice *nvdimm = NVDIMM(md);
Error *local_err = NULL;
if (!nvdimm->nvdimm_mr) {
@ -190,11 +192,12 @@ static Property nvdimm_properties[] = {
static void nvdimm_class_init(ObjectClass *oc, void *data)
{
PCDIMMDeviceClass *ddc = PC_DIMM_CLASS(oc);
MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(oc);
NVDIMMClass *nvc = NVDIMM_CLASS(oc);
DeviceClass *dc = DEVICE_CLASS(oc);
ddc->realize = nvdimm_realize;
ddc->get_memory_region = nvdimm_get_memory_region;
mdc->get_memory_region = nvdimm_md_get_memory_region;
dc->props = nvdimm_properties;
nvc->read_label_data = nvdimm_read_label_data;