[PATCH v7 32/36] hw/arm/virt: Let virt support pci hotplug/unplug GED event

[Eric Auger]

Set up the IO registers used to communicate between QEMU
and ACPI.

Signed-off-by: Eric Auger <eric.au...@redhat.com>
Reviewed-by: Jonathan Cameron <jonathan.came...@huawei.com>
Reviewed-by: Igor Mammedov <imamm...@redhat.com>

---
v2 -> v3:
- remove acpi_ged_state->pcihp_state.use_acpi_hotplug_bridge = true;
- use sysbus_mmio_map_name for all regs (Igor)
- create_pcie left at its original place

v1 -> v2:
- use ACPI_PCIHP_REGION_NAME
---
 hw/arm/virt.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index f127a668ef..ef6be3660f 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -691,6 +691,7 @@ static inline DeviceState *create_acpi_ged(VirtMachineState 
*vms)
     SysBusDevice *sbdev;
     int irq = vms->irqmap[VIRT_ACPI_GED];
     uint32_t event = ACPI_GED_PWR_DOWN_EVT;
+    bool acpi_pcihp;
 
     if (ms->ram_slots) {
         event |= ACPI_GED_MEM_HOTPLUG_EVT;
@@ -709,6 +710,18 @@ static inline DeviceState 
*create_acpi_ged(VirtMachineState *vms)
     sysbus_mmio_map_name(sbdev, TYPE_ACPI_GED, 
vms->memmap[VIRT_ACPI_GED].base);
     sysbus_mmio_map_name(sbdev, ACPI_MEMHP_REGION_NAME,
                          vms->memmap[VIRT_PCDIMM_ACPI].base);
+
+    acpi_pcihp = object_property_get_bool(OBJECT(dev),
+                                          ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, 
NULL);
+
+    if (acpi_pcihp) {
+        int pcihp_region_index;
+
+        pcihp_region_index = sysbus_mmio_map_name(sbdev, 
ACPI_PCIHP_REGION_NAME,
+                                                  
vms->memmap[VIRT_ACPI_PCIHP].base);
+        assert(pcihp_region_index >= 0);
+    }
+
     sysbus_connect_irq(sbdev, 0, qdev_get_gpio_in(vms->gic, irq));
 
     return dev;
-- 
2.49.0