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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/KbcEmulation/ALASKA/KBCEMUL/Kbccore.c 9 1/09/12 1:30a Rameshr $
//
// $Revision: 9 $
//
// $Date: 1/09/12 1:30a $
//
//****************************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/KbcEmulation/ALASKA/KBCEMUL/Kbccore.c $
//
// 9 1/09/12 1:30a Rameshr
// [TAG] EIP74128
// [Category] Improvement
// [Description] Disable the KbcEmulation Smi’s on ACPI enable and
// Disable SMI call
// [Files] Kbccore.c, KbcEmuulAcpi.c, KbcEmul.c, KbcEmul.cif,
// KbcEmul.h, KbcEmul.sdl
//
// 8 1/06/12 3:51a Rameshr
// [TAG] EIP78617
// [Category] Bug Fix
// [Severity] Important
// [Symptom] When KBCEmulation is enabled during OS runtime phase,
// system reboots
// [RootCause] if the SMI happens from AP, Kbcemulation driver unable to
// handle it.
// [Solution] Added logic in KbcCore.c to find the CPU that cause SMI
// and access the corresponding AL register.
// [Files] Ap4x.h, KbcCore.c
//
// 7 1/06/12 3:21a Rameshr
// EIP78617 check-in removed.
//
// 5 2/10/11 1:02a Rameshr
// [TAG] EIP53687
// [Category] Improvement
// [Description] AMI headers update for KbcEmulation Module
// [Files] KbcEmul.mak,KbcEmul.dxs,KbcEmul.c,KbcEmul.h,KbcEmulLib.h,Kbc
// EmulLib.c,Kbc.h,KbcDevEmul.h,Kbccore.c,Legacykbc.c,Legacykbd.c,LegacyMo
// use.c,VirtualKbc.c,VirtualKbd.c,VirtualMouse.c,Ap4x.h,Ap4x.c,KbcUhci.c,
// KbcUhci.h,KbcEmulIrq.c, KbcOhci.c, Kbcohci.h
//
// 4 7/08/10 1:56a Rameshr
// Ohci Emulation support Added.
// EIP 39712
//
// 3 6/30/09 11:30a Rameshr
// Coding Standard and File header updated.
//
// 2 2/05/09 9:35a Rameshr
// Symptom : With Latest CSM Emulation doesn't work.
// Solution: Added Emulation enable code in outside SMM. This is called
// from Uhcd.c when ever USB mode changes to Legacy
// EIP:18730
//
// 1 12/14/07 10:26a Rameshraju
// Initial Check-in
//****************************************************************************
//<AMI_FHDR_START>
//**********************************************************************
//
// Name: Kbccore.c
//
// Description: It has function for port 60 read, 60 write, 64 read and 64 write
//
//**********************************************************************
//<AMI_FHDR_END>
#include "KbcEmul.h"
#include "kbc.h"
#if UHCI_EMUL_SUPPORT
#include "KbcUhci.h"
#else
#include "KbcOhci.h"
#endif
BOOLEAN AcpiEmulationDisable=FALSE;
extern KBC* gVirtualKBC;
#define SYNC_SMI_BIT (1 << 0)
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: FindSMICpu
//
// Description: In a Multiprocessor environment, any logical CPU can generate
// the SMI. This function finds the CPU that generates SMI by accessing
// IO 60/64 Ports
//
// Input: None
//
// Output: UINT8 CpuIndex
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
UINT8 FindSMICpu ( ) {
UINT8 CpuIndex;
UINT32 SmmIoMiscInfo;
UINT16 IOAddress;
UINT32 Smbase=0;
for (CpuIndex = 0; CpuIndex < gSmst->NumberOfCpus; CpuIndex++) {
//
// Find which CPU caused the SMI
//
Smbase = gSmst->CpuSaveState[CpuIndex].Ia32SaveState.SMBASE;
SmmIoMiscInfo = *(UINT32 *) (((UINT8 *) (UINTN) Smbase) + 0x8000 + 0x7FA4);
IOAddress = SmmIoMiscInfo >> 16;
if (((IOAddress == 0x60) || (IOAddress == 0x64)) && (SmmIoMiscInfo & SYNC_SMI_BIT)) {
return CpuIndex;
}
}
return 0xFF;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: getTrapAL
//
// Description: Get the port 60 or 64 input value from the CPU save reg
//
// Input: None
//
// Output: UINT8 Value
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
UINT8 GetTrapAL()
{
#if UHCI_EMUL_SUPPORT
UINT8 CpuIndex;
CpuIndex = FindSMICpu ();
ASSERT (CpuIndex != 0xFF);
return (UINT8)GET_CPUSAVESTATE_REG(CpuIndex, EAX);
#else
return GetHceInput();
#endif
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: setTrapAL
//
// Description: Set the port 60 or 64 output value to the CPU save reg
//
// Input: UINT8 Data
//
// Output: None
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
void SetTrapAL(UINT8 data)
{
#if UHCI_EMUL_SUPPORT
UINT8 CpuIndex;
CpuIndex = FindSMICpu();
ASSERT (CpuIndex != 0xFF);
*(UINT8*)&GET_CPUSAVESTATE_REG(CpuIndex, EAX) = data;
#endif
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: trap64w
//
// Description: This function handles the Port64 write command
//
// Input: None
//
// Output: None
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
void trap64w()
{
(*gVirtualKBC->kbc_write_command)( gVirtualKBC,GetTrapAL() );
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: setTrapAL
//
// Description: This function handles the Port60 write command
//
// Input: None
//
// Output: None
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
void trap60w()
{
(*gVirtualKBC->kbc_write_data)( gVirtualKBC,GetTrapAL() );
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: setTrapAL
//
// Description: This function handles the Port64 Read command
//
// Input: None
//
// Output: None
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
void trap64r()
{
SetTrapAL((*gVirtualKBC->kbc_read_status)(gVirtualKBC));
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: setTrapAL
//
// Description: This function handles the Port60 Read command
//
// Input: None
//
// Output: None
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
void trap60r()
{
SetTrapAL((*gVirtualKBC->kbc_read_data)(gVirtualKBC));
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: hasTrapStatus
//
// Description: return the port 6064 trap status
//
// Input: None
//
// Output: TRUE: Trab enabled for port 6064
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
BOOLEAN hasTrapStatus()
{
BOOLEAN TrapStatus=FALSE;
#if UHCI_EMUL_SUPPORT
TrapStatus=Uhci_HasTrapStatus();
#endif
#if OHCI_EMUL_SUPPORT
TrapStatus=Ohci_HasTrapStatus();
#endif
return TrapStatus;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: TrapEnable
//
// Description: Enable/disable the port6064 trap
//
// Input: TRUE : enable the trap.
// FALSE: Disable the trap.
//
// Output: TRUE : when suucessfully done else FALSE
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
BOOLEAN TrapEnable(BOOLEAN b)
{
if(AcpiEmulationDisable) {
return FALSE;
}
#if UHCI_EMUL_SUPPORT
return Uhci_TrapEnable(b);
#endif
#if OHCI_EMUL_SUPPORT
return Ohci_TrapEnable(b);
#endif
return TRUE;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: NonSmmTrapEnable
//
// Description: Enable/disable the port6064 trap in Non SMM
//
// Input: TRUE : enable the trap.
// FALSE: Disable the trap.
//
// Output: TRUE/FALSE
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
BOOLEAN NonSmmTrapEnable(BOOLEAN b)
{
#if UHCI_EMUL_SUPPORT
return NonSmmUhci_TrapEnable(b);
#endif
#if OHCI_EMUL_SUPPORT
return NonSmmOhci_TrapEnable(b);
#endif
return TRUE;
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
|
