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/**
* @file
*
* ALIB PSPP Pcie Smu Lib V1
*
*
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: AGESA
* @e sub-project: GNB
* @e \$Revision: 63425 $ @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $
*
*/
/*
*****************************************************************************
*
* Copyright (c) 2008 - 2012, Advanced Micro Devices, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Advanced Micro Devices, Inc. nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ***************************************************************************
*
*/
/*----------------------------------------------------------------------------------------*/
/**
* Request VID
*
* Arg0 - 1 - GEN1 2 - GEN2
* Arg1 - 0 = do not wait intil voltage is set
* 1 = wait until voltage is set
*/
Method (procPcieSetVoltage, 2, Serialized) {
Store ("PcieSetVoltage Enter", Debug)
// Get real vid by index
if (LEqual (Arg0, DEF_LINK_SPEED_GEN1)) {
Store (DeRefOf (Index (varSclkVid, varGen1Vid)), local3)
} else {
Store (DeRefOf (Index (varSclkVid, varGen2Vid)), local3)
}
// GMMx63C/GMMx640 -- CG_Reg = reg - 0x600
// Store REQ in local2
And (procIndirectRegisterRead (0x0, 0xB8, 0xE000203C), 0x4, Local2)
// Store ACK in local1
And (procIndirectRegisterRead (0x0, 0xB8, 0xE0002040), 0x1, Local1)
// Compare REQ with ACK
while (LNotEqual (ShiftLeft(Local1, 0x2), Local2)) {
And (procIndirectRegisterRead (0x0, 0xB8, 0xE0002040), 0x1, Local1)
}
Store (procIndirectRegisterRead (0x0, 0xB8, 0xE000203C), Local1)
//Enable voltage change
if (LEqual (Arg0, DEF_LINK_SPEED_GEN1)) {
And (Local1, 0xFFFFFFFD, Local1)
} else {
Or (Local1, 0x2, Local1)
}
procIndirectRegisterWrite (0x0, 0xB8, 0xE000203C, Local1)
//Clear voltage index
And (Local1, Not (ShiftLeft (0xFF, 8)), Local1)
Store (Concatenate (" Voltage Index:", ToHexString (local3), Local6), Debug)
//Set new voltage index
Or (Local1, ShiftLeft (local3, 8), Local1)
//Togle request
And (Not (Local1), 0x4, Local2)
Or (And (Local1, Not (0x4)), Local2, Local1)
procIndirectRegisterWrite (0x0, 0xB8, 0xE000203C, Local1)
if (LNotEqual (Arg1, 0)) {
while (LNotEqual (ShiftLeft(Local1, 0x2), Local2)) {
And (procIndirectRegisterRead (0x0, 0xB8, 0xE0002040), 0x1, Local1)
}
}
Store ("PcieSetVoltage Exit", Debug)
}
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