Vlv2DeviceRefCodePkg/AcpiTablesPCAT/UsbSbd.asl

   1 /************************************************************************************;
   2 ;*                                                                                  *;
   3 ;*                                                                                  *;
   4 ;*    Intel Corporation - ACPI Reference Code for the Baytrail                      *;
   5 ;*    Family of Customer Reference Boards.                                          *;
   6 ;*                                                                                  *;
   7 ;*    MPG-MSAE                                                                      *;
   8 ;*                                                                                  *;
   9 ;*    Copyright (c) 1999 - 2014, Intel Corporation.                                 *;
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  11 ;* ThSPDX-License-Identifier: BSD-2-Clause-Patent
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  13 ;*                                                                                  *;
  14 ;*    This program has been developed by Intel Corporation.                         *;
  15 ;*    Licensee has Intel's permission to incorporate this source code               *;
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  26 ;*    update it.                                                                    *;
  27 ;*                                                                                  *;
  28 ;*    Version:  See README.TXT                                                      *;
  29 ;*                                                                                  *;
  30 ;************************************************************************************/
  31
  32 //
  33 // _DSM : Device Specific Method supporting USB Sideband Deferring function
  34 //
  35 // Arg0: UUID Unique function identifier
  36 // Arg1: Integer Revision Level
  37 // Arg2: Integer Function Index
  38 // Arg3: Package Parameters
  39 //
  40 Method (_DSM, 4, Serialized, 0, UnknownObj, {BuffObj, IntObj, IntObj, PkgObj})
  41 {
  42
  43   If (LEqual(Arg0, ToUUID ("A5FC708F-8775-4BA6-BD0C-BA90A1EC72F8")))
  44   {
  45     //
  46     // Switch by function index
  47     //
  48     Switch (ToInteger(Arg2))
  49     {
  50       //
  51       // Standard query - A bitmask of functions supported
  52       // Supports function 0-2
  53       //
  54       Case (0)
  55       {
  56         if (LEqual(Arg1, 1))   // test Arg1 for the revision
  57         {
  58           Return (Buffer () {0x07})
  59         }
  60         else
  61         {
  62           Return (Buffer () {0})
  63         }
  64       }
  65       //
  66       // USB Sideband Deferring Support
  67       //   0: USB Sideband Deferring not supported on this device
  68       //   1: USB Sideband Deferring supported
  69       //
  70       Case (1)
  71       {
  72         if (LEqual(SDGV,0xFF))   // check for valid GPE vector
  73         {
  74           Return (0)
  75         }
  76         else
  77         {
  78           Return (1)
  79         }
  80       }
  81       //
  82       // GPE Vector
  83       //  Return the bit offset within the GPE block of the GPIO (HOST_ALERT) driven by this device
  84       //
  85       Case (2)
  86       {
  87         Return (SDGV)
  88       }
  89     }
  90   }
  91
  92   Return (0)
  93 }