Vlv2DeviceRefCodePkg/AcpiTablesPCAT/UsbSbd.asl

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   4 ;*    Intel Corporation - ACPI Reference Code for the Baytrail                      *;
   5 ;*    Family of Customer Reference Boards.                                          *;
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   7 ;*    MPG-MSAE                                                                      *;
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  34 ;*    Version:  See README.TXT                                                      *;
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  37
  38 //
  39 // _DSM : Device Specific Method supporting USB Sideband Deferring function
  40 //
  41 // Arg0: UUID Unique function identifier
  42 // Arg1: Integer Revision Level
  43 // Arg2: Integer Function Index
  44 // Arg3: Package Parameters
  45 //
  46 Method (_DSM, 4, Serialized, 0, UnknownObj, {BuffObj, IntObj, IntObj, PkgObj})
  47 {
  48
  49   If (LEqual(Arg0, ToUUID ("A5FC708F-8775-4BA6-BD0C-BA90A1EC72F8")))
  50   {
  51     //
  52     // Switch by function index
  53     //
  54     Switch (ToInteger(Arg2))
  55     {
  56       //
  57       // Standard query - A bitmask of functions supported
  58       // Supports function 0-2
  59       //
  60       Case (0)
  61       {
  62         if (LEqual(Arg1, 1))   // test Arg1 for the revision
  63         {
  64           Return (Buffer () {0x07})
  65         }
  66         else
  67         {
  68           Return (Buffer () {0})
  69         }
  70       }
  71       //
  72       // USB Sideband Deferring Support
  73       //   0: USB Sideband Deferring not supported on this device
  74       //   1: USB Sideband Deferring supported
  75       //
  76       Case (1)
  77       {
  78         if (LEqual(SDGV,0xFF))   // check for valid GPE vector
  79         {
  80           Return (0)
  81         }
  82         else
  83         {
  84           Return (1)
  85         }
  86       }
  87       //
  88       // GPE Vector
  89       //  Return the bit offset within the GPE block of the GPIO (HOST_ALERT) driven by this device
  90       //
  91       Case (2)
  92       {
  93         Return (SDGV)
  94       }
  95     }
  96   }
  97
  98   Return (0)
  99 }