1 files changed, 69 insertions, 0 deletions
diff --git a/Silicon/Intel/LewisburgPkg/AcpiTables/Dsdt/usbsbd.asl b/Silicon/Intel/LewisburgPkg/AcpiTables/Dsdt/usbsbd.asl
new file mode 100644
index 0000000000..2778f4247b
--- /dev/null
+++ b/Silicon/Intel/LewisburgPkg/AcpiTables/Dsdt/usbsbd.asl
@@ -0,0 +1,69 @@
+/** @file
+
+Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+//
+// _DSM : Device Specific Method supporting USB Sideband Deferring function
+//
+// Arg0: UUID Unique function identifier
+// Arg1: Integer Revision Level
+// Arg2: Integer Function Index
+// Arg3: Package Parameters
+//
+Method (_DSM, 4, Serialized, 0, UnknownObj, {BuffObj, IntObj, IntObj, PkgObj})
+{
+
+  If (LEqual(Arg0, ToUUID ("A5FC708F-8775-4BA6-BD0C-BA90A1EC72F8")))
+  {
+    //
+    // Switch by function index
+    //
+    Switch (ToInteger(Arg2))
+    {
+      //
+      // Standard query - A bitmask of functions supported
+      // Supports function 0-2
+      //
+      Case (0)
+      {
+        if (LEqual(Arg1, 1)){ // test Arg1 for the revision 
+          Return (Buffer () {0x07})
+        } else {
+          Return (Buffer () {0})
+        }
+      }
+      //
+      // USB Sideband Deferring Support
+      //   0: USB Sideband Deferring not supported on this device
+      //   1: USB Sideband Deferring supported
+      //
+      Case (1)
+      {
+        if (LEqual(SDGV,0xFF)){ // check for valid GPE vector
+          Return (0)
+        } else {
+          Return (1)
+        }
+      }
+      //
+      // GPE Vector
+      //  Return the bit offset within the GPE block of the GPIO (HOST_ALERT) driven by this device
+      //
+      Case (2)
+      {
+        Return (SDGV)
+      }
+    }
+  }
+
+  Return (0)
+}