[PATCH v2 4/7] acpi_build: Use IOMMU pci device to build IOMMU DeviceID

[Sairaj Kodilkar <sarunkod@amd.com>]

Currently, build_amd_iommu() uses "addr" property to build the DeviceID for
IOMMU device and advertise it through IVRS. But this property does not encode
IOMMU bus number, only the device and function number. This creates an
incorrect DeviceID when the IOMMU is attached to a bus other than the
default one with bus number 0.

Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reviewed-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
---
 hw/i386/acpi-build.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index d8c14644e62e..6e174f20a4ef 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1848,6 +1848,7 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id,
     AcpiTable table = { .sig = "IVRS", .rev = 1, .oem_id = oem_id,
                         .oem_table_id = oem_table_id };
     uint64_t feature_report;
+    uint16_t iommu_devid = pci_get_bdf(&s->pci->dev);
 
     acpi_table_begin(&table, table_data);
     /* IVinfo - IO virtualization information common to all
@@ -1910,9 +1911,7 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id,
     /* IVHD length */
     build_append_int_noprefix(table_data, ivhd_blob->len + 24, 2);
     /* DeviceID */
-    build_append_int_noprefix(table_data,
-                              object_property_get_int(OBJECT(s->pci), "addr",
-                                                      &error_abort), 2);
+    build_append_int_noprefix(table_data, iommu_devid, 2);
     /* Capability offset */
     build_append_int_noprefix(table_data, s->pci->capab_offset, 2);
     /* IOMMU base address */
@@ -1944,10 +1943,9 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id,
 
     /* IVHD length */
     build_append_int_noprefix(table_data, ivhd_blob->len + 40, 2);
+
     /* DeviceID */
-    build_append_int_noprefix(table_data,
-                              object_property_get_int(OBJECT(s->pci), "addr",
-                                                      &error_abort), 2);
+    build_append_int_noprefix(table_data, iommu_devid, 2);
     /* Capability offset */
     build_append_int_noprefix(table_data, s->pci->capab_offset, 2);
     /* IOMMU base address */
-- 
2.34.1