audk/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/UsbSbd.asl

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/************************************************************************************;
;* *;
;* *;
;* Intel Corporation - ACPI Reference Code for the Baytrail *;
;* Family of Customer Reference Boards. *;
;* *;
;* MPG-MSAE *;
;* *;
;* Copyright (c) 1999 - 2014, Intel Corporation. *;
;* *;
;* 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. *;
;* *;
;* *;
;* This program has been developed by Intel Corporation. *;
;* Licensee has Intel's permission to incorporate this source code *;
;* into their product, royalty free. This source code may NOT be *;
;* redistributed to anyone without Intel's written permission. *;
;* *;
;* Intel specifically disclaims all warranties, express or *;
;* implied, and all liability, including consequential and other *;
;* indirect damages, for the use of this code, including liability *;
;* for infringement of any proprietary rights, and including the *;
;* warranties of merchantability and fitness for a particular *;
;* purpose. Intel does not assume any responsibility for any *;
;* errors which may appear in this code nor any responsibility to *;
;* update it. *;
;* *;
;* Version: See README.TXT *;
;* *;
;************************************************************************************/
//
// _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)
}