[PATCH 6/8] amd_iommu: Introduce root bus

[Sairaj Kodilkar <sarunkod@amd.com>]

Following patch will create IVRS entries starting from the root bus

Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
---
 hw/i386/amd_iommu.c | 2 ++
 hw/i386/amd_iommu.h | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
index 5c1fb0879c0f..5e4d5d1f1fcd 100644
--- a/hw/i386/amd_iommu.c
+++ b/hw/i386/amd_iommu.c
@@ -2713,6 +2713,8 @@ static void amdvi_sysbus_realize(DeviceState *dev, Error **errp)
         }
     }
 
+    s->root_bus = bus;
+
     s->iotlb = g_hash_table_new_full(amdvi_iotlb_hash,
                                      amdvi_iotlb_equal, g_free, g_free);
 
diff --git a/hw/i386/amd_iommu.h b/hw/i386/amd_iommu.h
index 687691ec1cce..04a5bbd33740 100644
--- a/hw/i386/amd_iommu.h
+++ b/hw/i386/amd_iommu.h
@@ -373,6 +373,9 @@ struct AMDVIState {
 
     /* DMA address translation */
     bool dma_remap;
+
+    /* root bus to register IOMMU ops */
+    PCIBus *root_bus;
 };
 
 uint64_t amdvi_extended_feature_register(AMDVIState *s);
-- 
2.34.1