[Qemu-devel] [RFC PATCH 2/2] ARM: Virt: ACPI: Add GIC ITS description in ACPI MADT table

[Shannon Zhao <zhaoshenglong@huawei.com>]

From: Shannon Zhao <shannon.zhao@linaro.org>

If GIC ITS is supported, add description in ACPI MADT table, then guest
could use ITS when booting with ACPI.

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
---
 hw/arm/virt-acpi-build.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 3c2c5d6..f200086 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -41,6 +41,7 @@
 #include "hw/acpi/aml-build.h"
 #include "hw/pci/pcie_host.h"
 #include "hw/pci/pci.h"
+#include "kvm_arm.h"
 
 #define ARM_SPI_BASE 32
 
@@ -440,6 +441,7 @@ build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info,
     AcpiMultipleApicTable *madt;
     AcpiMadtGenericDistributor *gicd;
     AcpiMadtGenericMsiFrame *gic_msi;
+    AcpiMadtGenericTranslator *gic_its;
     int i;
 
     madt = acpi_data_push(table_data, sizeof *madt);
@@ -475,6 +477,15 @@ build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info,
         gicr->length = sizeof(*gicr);
         gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST].base);
         gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST].size);
+
+        if (!its_class_name()) {
+            return;
+        }
+        gic_its = acpi_data_push(table_data, sizeof *gic_its);
+        gic_its->type =  ACPI_APIC_GENERIC_TRANSLATOR;
+        gic_its->length = sizeof(*gic_its);
+        gic_its->translation_id = 0;
+        gic_its->base_address = cpu_to_le64(memmap[VIRT_GIC_ITS].base);
     } else {
         gic_msi = acpi_data_push(table_data, sizeof *gic_msi);
         gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME;
-- 
2.0.4