Source code of Windows XP (NT5)
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/*++
Copyright (c) 1998 Microsoft Corporation
Module Name:
fakeacpi.c
Abstract:
Temporary support for Acpi tables in SIMICS simulator environment. This
file should be removed when SIMICS provides Acpi tables.
Author:
Forrest Foltz (forrestf) 04-02-2001
Environment:
Kernel mode only.
Revision History:
--*/
#if defined(_AMD64_SIMULATOR_)
#include "halcmn.h"
typedef struct _FAKE_ACPI_PORT_DESC {
ACPI_REG_TYPE AcpiReg;
USHORT PortSize;
USHORT BlockSize;
BOOLEAN Mask;
ULONG Data;
PUCHAR IoPortName;
} FAKE_ACPI_PORT_DESC, *PFAKE_ACPI_PORT_DESC;
#define FPE(p,r,s,b,d) { p, r, s, b, d, #p }
FAKE_ACPI_PORT_DESC HalpFakePortDescriptions[] = {
FPE( PM1a_ENABLE, 2, 2, FALSE, 1 ),
FPE( PM1b_ENABLE, 2, 2, FALSE, 0 ),
FPE( PM1a_STATUS, 2, 2, TRUE, 0 ),
FPE( PM1b_STATUS, 2, 2, TRUE, 0 ),
FPE( PM1a_CONTROL, 2, 2, FALSE, 0 ),
FPE( PM1b_CONTROL, 2, 2, FALSE, 0 ),
FPE( GP_STATUS, 1, 2, TRUE, 0 ),
FPE( GP_ENABLE, 1, 2, FALSE, 0 ),
FPE( SMI_CMD, 1, 1, FALSE, 0 )
};
#if DBG
BOOLEAN HalpDebugFakeAcpi = FALSE;
#else
#define HalpDebugFakeAcpi FALSE
#endif
PFAKE_ACPI_PORT_DESC
HalpFindFakeAcpiPortDesc (
ACPI_REG_TYPE AcpiReg
)
/*++
Routine Description:
Locates the FAKE_ACPI_PORT_DESC structure appropriate to the
supplied AcpiReg.
Arguments:
AcpiReg - Specifies which ACPI fixed register to find the structure for.
Return Value:
Returns a pointer to the appropriate FAKE_ACPI_PORT_DESC structure if
it was found, or NULL otherwise.
--*/
{
ULONG i;
PFAKE_ACPI_PORT_DESC portDesc;
for (i = 0; i < RTL_NUMBER_OF(HalpFakePortDescriptions); i += 1) {
portDesc = &HalpFakePortDescriptions[i];
if (portDesc->AcpiReg == AcpiReg) {
return portDesc;
}
}
DbgPrint("AMD64: Need to emulate ACPI I/O port 0x%x\n",AcpiReg);
return NULL;
}
USHORT
HalpReadAcpiRegister (
IN ACPI_REG_TYPE AcpiReg,
IN ULONG Register
)
/*++
Routine Description:
Read from the specified ACPI fixed register.
Arguments:
AcpiReg - Specifies which ACPI fixed register to read from.
Register - Specifies which GP register to read from. Not used for PM1x
registers.
Return Value:
Value of the specified ACPI fixed register.
--*/
{
PFAKE_ACPI_PORT_DESC portDesc;
PUCHAR source;
USHORT retVal;
portDesc = HalpFindFakeAcpiPortDesc(AcpiReg);
if (portDesc == NULL) {
return 0xffff;
}
ASSERT((Register + portDesc->PortSize) <= portDesc->BlockSize);
source = (PUCHAR)&portDesc->Data + Register;
retVal = 0;
RtlCopyMemory((PUCHAR)&retVal, source, portDesc->PortSize);
if (HalpDebugFakeAcpi != FALSE) {
DbgPrint("HalpReadAcpiRegister(%s,0x%x) returns 0x%x\n",
portDesc->IoPortName,
Register,
retVal);
}
return retVal;
}
VOID
HalpWriteAcpiRegister (
IN ACPI_REG_TYPE AcpiReg,
IN ULONG Register,
IN USHORT Value
)
/*++
Routine Description:
Write to the specified ACPI fixed register.
Arguments:
AcpiReg - Specifies which ACPI fixed register to write to.
Register - Specifies which GP register to write to. Not used for PM1x
registers.
Value - Data to write.
Return Value:
None.
--*/
{
PFAKE_ACPI_PORT_DESC portDesc;
PUCHAR source;
PUCHAR destination;
ULONG i;
portDesc = HalpFindFakeAcpiPortDesc(AcpiReg);
if (portDesc == NULL) {
return;
}
ASSERT((Register + portDesc->PortSize) <= portDesc->BlockSize);
source = (PUCHAR)&Value;
destination = (PUCHAR)&portDesc->Data + Register;
if (HalpDebugFakeAcpi != FALSE) {
DbgPrint("HalpWriteAcpiRegister(%s,0x%x) with value 0x%x\n",
portDesc->IoPortName,
Register,
Value);
}
for (i = 0; i < portDesc->PortSize; i++) {
if (portDesc->Mask != FALSE) {
*destination &= ~(*source);
} else {
*destination = *source;
}
source += 1;
destination += 1;
}
if (AcpiReg == SMI_CMD && Register == 0) {
//
// Assume that we have just turned ACPI on.
//
HalpFindFakeAcpiPortDesc(PM1a_CONTROL)->Data |= 1;
}
}
#endif // _AMD64_SIMULATOR_