[PATCH 10/17] OvmfPkg/PvScsiDxe: Enable IOSpace & Bus-Mastering in PCI attributes

["Liran Alon" <liran.alon@oracle.com>]

Enable IOSpace & Bus-Mastering PCI attributes when device is started.
Note that original PCI attributes is restored when device is stopped.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2567
Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
---
 OvmfPkg/PvScsiDxe/PvScsi.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/OvmfPkg/PvScsiDxe/PvScsi.c b/OvmfPkg/PvScsiDxe/PvScsi.c
index 92e0f4a98965..ff6b50b7020f 100644
--- a/OvmfPkg/PvScsiDxe/PvScsi.c
+++ b/OvmfPkg/PvScsiDxe/PvScsi.c
@@ -309,6 +309,20 @@ PvScsiSetPCIAttributes (
     return Status;
   }
 
+  //
+  // Enable IOSpace & Bus-Mastering
+  //
+  Status = Dev->PciIo->Attributes (
+                         Dev->PciIo,
+                         EfiPciIoAttributeOperationEnable,
+                         (EFI_PCI_IO_ATTRIBUTE_MEMORY |
+                          EFI_PCI_IO_ATTRIBUTE_BUS_MASTER),
+                         NULL
+                         );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
   return EFI_SUCCESS;
 }
 
-- 
2.20.1