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/*++
Copyright (c) 1993 Digital Equipment Corporation
Module Name:
ev4parit.c
Abstract:
This module implements machine check handling for machines with
parity memory protection that are based on the DECchip 21064
microprocessor.
Author:
Joe Notarangelo 11-Feb-1993
Environment:
Kernel mode only.
Revision History:
--*/
#include "halp.h"
#include "axp21064.h"
VOID
HalpDisplayLogout21064( PLOGOUT_FRAME_21064 LogoutFrame );
BOOLEAN
HalMachineCheck (
IN PEXCEPTION_RECORD ExceptionRecord,
IN PKEXCEPTION_FRAME ExceptionFrame,
IN PKTRAP_FRAME TrapFrame
)
/*++
Routine Description:
This function fields machine check for 21064-based machines with
parity memory protection.
Arguments:
ExceptionRecord - Supplies a pointer to the exception record for the
machine check. Included in the exception information
is the pointer to the logout frame.
ExceptionFrame - Supplies a pointer to the kernel exception frame.
TrapFrame - Supplies a pointer to the kernel trap frame.
Return Value:
A value of TRUE is returned if the machine check has been
handled by the HAL. If it has been handled then execution may
resume at the faulting address. Otherwise, a value of FALSE
is returned.
N.B. - under some circumstances this routine may not return at
all.
--*/
{
PMCHK_STATUS MachineCheckStatus;
//
// This is a parity machine. If we receive a machine check it
// is uncorrectable. We will print the logout frame and then we
// will bugcheck.
//
// However, we will first check that the machine check is not
// marked as correctable. If the machine check is correctable it uses
// a differently formatted logout frame. We will ignore the frame
// for any machine check marked as correctable since it is an impossible
// condition on a parity machine.
//
MachineCheckStatus =
(PMCHK_STATUS)&ExceptionRecord->ExceptionInformation[0];
if( MachineCheckStatus->Correctable == 0 ){
HalpDisplayLogout21064(
(PLOGOUT_FRAME_21064)(ExceptionRecord->ExceptionInformation[1])
);
}
//
// Bugcheck to dump the rest of the machine state, this will help
// if the machine check is software-related.
//
KeBugCheckEx( DATA_BUS_ERROR,
(ULONG)MachineCheckStatus->Correctable,
(ULONG)MachineCheckStatus->Retryable,
0,
0 );
}
#define MAX_ERROR_STRING 100
VOID
HalpDisplayLogout21064 (
IN PLOGOUT_FRAME_21064 LogoutFrame
)
/*++
Routine Description:
This function displays the logout frame for a 21064.
Arguments:
LogoutFrame - Supplies a pointer to the logout frame generated
by the 21064.
Return Value:
None.
--*/
{
UCHAR OutBuffer[ MAX_ERROR_STRING ];
//
// Acquire ownership of the display. This is done here in case we take
// a machine check before the display has been taken away from the HAL.
// When the HAL begins displaying strings after it has lost the
// display ownership then the HAL will be careful not to scroll information
// off of the screen.
//
HalAcquireDisplayOwnership(NULL);
//
// Display the machine state via the logout frame.
//
HalDisplayString( "\nFatal system hardware error.\n\n" );
sprintf( OutBuffer, "BIU_STAT : %016Lx BIU_ADDR: %016Lx\n",
BIUSTAT_ALL_21064( LogoutFrame->BiuStat ),
LogoutFrame->BiuAddr.QuadPart );
HalDisplayString( OutBuffer );
sprintf( OutBuffer, "FILL_ADDR: %016Lx FILL_SYN: %016Lx\n",
LogoutFrame->FillAddr.QuadPart,
FILLSYNDROME_ALL_21064(LogoutFrame->FillSyndrome) );
HalDisplayString( OutBuffer );
sprintf( OutBuffer, "DC_STAT : %016Lx BC_TAG : %016Lx\n",
DCSTAT_ALL_21064(LogoutFrame->DcStat),
BCTAG_ALL_21064(LogoutFrame->BcTag) );
HalDisplayString( OutBuffer );
sprintf( OutBuffer, "ICCSR : %016Lx ABOX_CTL: %016Lx EXC_SUM: %016Lx\n",
ICCSR_ALL_21064(LogoutFrame->Iccsr),
ABOXCTL_ALL_21064(LogoutFrame->AboxCtl),
EXCSUM_ALL_21064(LogoutFrame->ExcSum) );
HalDisplayString( OutBuffer );
sprintf( OutBuffer, "EXC_ADDR : %016Lx VA : %016Lx MM_CSR : %016Lx\n",
LogoutFrame->ExcAddr.QuadPart,
LogoutFrame->Va.QuadPart,
MMCSR_ALL_21064(LogoutFrame->MmCsr) );
HalDisplayString( OutBuffer );
sprintf( OutBuffer, "HIRR : %016Lx HIER : %016Lx PS : %016Lx\n",
IRR_ALL_21064(LogoutFrame->Hirr),
IER_ALL_21064(LogoutFrame->Hier),
PS_ALL_21064(LogoutFrame->Ps) );
HalDisplayString( OutBuffer );
sprintf( OutBuffer, "PAL_BASE : %016Lx \n",
LogoutFrame->PalBase.QuadPart );
HalDisplayString( OutBuffer );
//
// Print out interpretation of the error.
//
HalDisplayString( "\n" );
//
// Check for tag control parity error.
//
if( BIUSTAT_TCPERR_21064(LogoutFrame->BiuStat) == 1 ){
sprintf( OutBuffer,
"Tag control parity error, Tag control: P: %1x D: %1x S: %1x V: %1x\n",
BCTAG_TAGCTLP_21064( LogoutFrame->BcTag ),
BCTAG_TAGCTLD_21064( LogoutFrame->BcTag ),
BCTAG_TAGCTLS_21064( LogoutFrame->BcTag ),
BCTAG_TAGCTLV_21064( LogoutFrame->BcTag ) );
HalDisplayString( OutBuffer );
}
//
// Check for tag parity error.
//
if( BIUSTAT_TPERR_21064(LogoutFrame->BiuStat) == 1 ){
sprintf( OutBuffer,
"Tag parity error, Tag: 0b%17b Parity: %1x\n",
BCTAG_TAG_21064(LogoutFrame->BcTag),
BCTAG_TAGP_21064(LogoutFrame->BcTag) );
HalDisplayString( OutBuffer );
}
//
// Check for hard error.
//
if( BIUSTAT_HERR_21064(LogoutFrame->BiuStat) == 1 ){
sprintf( OutBuffer, "Hard error acknowledge: BIU CMD: %x PA: %16Lx\n",
BIUSTAT_CMD_21064(LogoutFrame->BiuStat),
LogoutFrame->BiuAddr.QuadPart );
HalDisplayString( OutBuffer );
}
//
// Check for soft error.
//
if( BIUSTAT_SERR_21064(LogoutFrame->BiuStat) == 1 ){
sprintf( OutBuffer, "Soft error acknowledge: BIU CMD: %x PA: %16Lx\n",
BIUSTAT_CMD_21064(LogoutFrame->BiuStat),
LogoutFrame->BiuAddr.QuadPart );
HalDisplayString( OutBuffer );
}
//
// Check for fill ECC errors.
//
if( BIUSTAT_FILLECC_21064(LogoutFrame->BiuStat) == 1 ){
sprintf( OutBuffer, "ECC error: %s\n",
(BIUSTAT_FILLIRD_21064(LogoutFrame->BiuStat) ?
"Icache Fill" : "Dcache Fill") );
HalDisplayString( OutBuffer );
sprintf( OutBuffer,
"PA: %16Lx Quadword: %x Longword0: %x Longword1: %x\n",
LogoutFrame->FillAddr.QuadPart,
BIUSTAT_FILLQW_21064(LogoutFrame->BiuStat),
FILLSYNDROME_LO_21064(LogoutFrame->FillSyndrome),
FILLSYNDROME_HI_21064(LogoutFrame->FillSyndrome) );
HalDisplayString( OutBuffer );
}
//
// Check for fill Parity errors.
//
if( BIUSTAT_FILLDPERR_21064(LogoutFrame->BiuStat) == 1 ){
sprintf( OutBuffer, "Parity error: %s\n",
(BIUSTAT_FILLIRD_21064(LogoutFrame->BiuStat) ?
"Icache Fill" : "Dcache Fill") );
HalDisplayString( OutBuffer );
sprintf( OutBuffer,
"PA: %16Lx Quadword: %x Longword0: %x Longword1: %x\n",
LogoutFrame->FillAddr.QuadPart,
BIUSTAT_FILLQW_21064(LogoutFrame->BiuStat),
FILLSYNDROME_LO_21064(LogoutFrame->FillSyndrome),
FILLSYNDROME_HI_21064(LogoutFrame->FillSyndrome) );
HalDisplayString( OutBuffer );
}
//
// Check for multiple hard errors.
//
if( BIUSTAT_FATAL1_21064(LogoutFrame->BiuStat) == 1 ){
HalDisplayString( "Multiple external/tag errors detected.\n" );
}
//
// Check for multiple fill errors.
//
if( BIUSTAT_FATAL2_21064(LogoutFrame->BiuStat) == 1 ){
HalDisplayString( "Multiple fill errors detected.\n" );
}
//
// return to caller
//
return;
}
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