[PATCH v3 5/6] hw/arm/virt: Add an SMMU_IO_LEN macro

[Shameer Kolothum]

From: Nicolin Chen <nicolinc@nvidia.com>

This is useful as the subsequent support for new SMMUv3 dev will also
use the same.

Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Donald Dutile <ddutile@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
---
 hw/arm/virt.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 71b923f786..eeace4754d 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -146,6 +146,9 @@ static void arm_virt_compat_set(MachineClass *mc)
 #define LEGACY_RAMLIMIT_GB 255
 #define LEGACY_RAMLIMIT_BYTES (LEGACY_RAMLIMIT_GB * GiB)
 
+/* MMIO region size for SMMUv3 */
+#define SMMU_IO_LEN 0x20000
+
 /* Addresses and sizes of our components.
  * 0..128MB is space for a flash device so we can run bootrom code such as 
UEFI.
  * 128MB..256MB is used for miscellaneous device I/O.
@@ -177,7 +180,7 @@ static const MemMapEntry base_memmap[] = {
     [VIRT_FW_CFG] =             { 0x09020000, 0x00000018 },
     [VIRT_GPIO] =               { 0x09030000, 0x00001000 },
     [VIRT_UART1] =              { 0x09040000, 0x00001000 },
-    [VIRT_SMMU] =               { 0x09050000, 0x00020000 },
+    [VIRT_SMMU] =               { 0x09050000, SMMU_IO_LEN },
     [VIRT_PCDIMM_ACPI] =        { 0x09070000, MEMORY_HOTPLUG_IO_LEN },
     [VIRT_ACPI_GED] =           { 0x09080000, ACPI_GED_EVT_SEL_LEN },
     [VIRT_NVDIMM_ACPI] =        { 0x09090000, NVDIMM_ACPI_IO_LEN},
@@ -1447,7 +1450,6 @@ static void create_smmu(const VirtMachineState *vms,
     int irq =  vms->irqmap[VIRT_SMMU];
     int i;
     hwaddr base = vms->memmap[VIRT_SMMU].base;
-    hwaddr size = vms->memmap[VIRT_SMMU].size;
     DeviceState *dev;
 
     if (vms->iommu != VIRT_IOMMU_SMMUV3 || !vms->iommu_phandle) {
@@ -1467,7 +1469,7 @@ static void create_smmu(const VirtMachineState *vms,
         sysbus_connect_irq(SYS_BUS_DEVICE(dev), i,
                            qdev_get_gpio_in(vms->gic, irq + i));
     }
-    create_smmuv3_dt_bindings(vms, base, size, irq);
+    create_smmuv3_dt_bindings(vms, base, SMMU_IO_LEN, irq);
 }
 
 static void create_virtio_iommu_dt_bindings(VirtMachineState *vms)
-- 
2.34.1