提交 cbcaf79e 编写于 作者: M Michael S. Tsirkin

q35: expose mmcfg size as a property

Address is already exposed, expose size for symmetry.
Reviewed-by: NGerd Hoffmann <kraxel@redhat.com>
Tested-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NIgor Mammedov <imammedo@redhat.com>
Tested-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
上级 87f65245
......@@ -109,6 +109,16 @@ static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v,
visit_type_uint64(v, &w64.end, name, errp);
}
static void q35_host_get_mmcfg_size(Object *obj, Visitor *v,
void *opaque, const char *name,
Error **errp)
{
PCIExpressHost *e = PCIE_HOST_BRIDGE(obj);
uint32_t value = e->size;
visit_type_uint32(v, &value, name, errp);
}
static Property mch_props[] = {
DEFINE_PROP_UINT64(PCIE_HOST_MCFG_BASE, Q35PCIHost, parent_obj.base_addr,
MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT),
......@@ -160,6 +170,10 @@ static void q35_host_initfn(Object *obj)
q35_host_get_pci_hole64_end,
NULL, NULL, NULL, NULL);
object_property_add(obj, PCIE_HOST_MCFG_SIZE, "int",
q35_host_get_mmcfg_size,
NULL, NULL, NULL, NULL);
/* Leave enough space for the biggest MCFG BAR */
/* TODO: this matches current bios behaviour, but
* it's not a power of two, which means an MTRR
......
......@@ -29,6 +29,7 @@
OBJECT_CHECK(PCIExpressHost, (obj), TYPE_PCIE_HOST_BRIDGE)
#define PCIE_HOST_MCFG_BASE "MCFG"
#define PCIE_HOST_MCFG_SIZE "mcfg_size"
/* pcie_host::base_addr == PCIE_BASE_ADDR_UNMAPPED when it isn't mapped. */
#define PCIE_BASE_ADDR_UNMAPPED ((hwaddr)-1ULL)
......
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