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NT4/private/ntos/fw/mips/eisapod.c
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2020-09-30 17:12:29 +02:00

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// ----------------------------------------------------------------------------
// Copyright (c) 1992 Olivetti
//
// File: eisapod.c
//
// Description:
// ----------------------------------------------------------------------------
//
#include "fwp.h"
#include "oli2msft.h"
#include "arceisa.h"
#include "inc.h"
#include "string.h"
#include "debug.h"
#include "eisastr.h"
extern EISA_BUS_INFO EisaBusInfo[];
// ----------------------------------------------------------------------------
// Define Function Prototypes
// ----------------------------------------------------------------------------
BOOLEAN
EisaBusPod
(
IN ULONG BusNumber
);
BOOLEAN
EisaIntPod
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
);
VOID
EisaPicIni
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
);
BOOLEAN
EisaPicRegTest
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
);
BOOLEAN
EisaClearPendingInts
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
);
BOOLEAN
EisaDmaPod
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
);
BOOLEAN
EisaDmaMaskTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
);
BOOLEAN
EisaDmaPageTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
);
BOOLEAN
EisaDmaAddressTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
);
BOOLEAN
EisaDmaCountTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
);
BOOLEAN
EisaDmaStopTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
);
VOID
EisaDmaIni
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
);
BOOLEAN
EisaOtherPod
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
);
BOOLEAN
EisaNmiTest
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
);
BOOLEAN
EisaNmiHandlerTest
(
IN ULONG Couse
);
BOOLEAN
EisaNmiHandler
(
IN ULONG Couse
);
VOID
EisaParityError
(
IN PUCHAR EisaIoStart
);
VOID
EisaIoChkError
(
IN PUCHAR EisaIoStart,
IN ULONG Slots
);
VOID
EisaBusTimeoutError
(
IN PUCHAR EisaIoStart,
IN ULONG Slots
);
VOID
EisaSlaveTimeoutError
(
IN PUCHAR EisaIoStart,
IN ULONG Slots
);
BOOLEAN
EisaRefreshTest
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
);
BOOLEAN
EisaPort61Test
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
);
BOOLEAN
EisaTimer1Test
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
);
BOOLEAN
EisaTimer2Test
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
);
// ----------------------------------------------------------------------------
// Define EISA Function Prototypes
// ----------------------------------------------------------------------------
VOID
EisaClearPendingInt
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo,
IN USHORT Irq
);
UCHAR
EisaAckInt
(
IN PEISA_INT_INFO pIntInfo
);
VOID
EisaSendSpecificEoi
(
IN PUCHAR EisaIoStart,
IN USHORT Irq
);
VOID
EisaDisableParityIoCheck
(
IN PUCHAR EisaIoStart
);
VOID
EisaEnableParityIoCheck
(
IN PUCHAR EisaIoStart
);
VOID
EisaDisableInt
(
VOID
);
VOID
EisaDisableNmi
(
IN PUCHAR EisaIoStart
);
VOID
EisaEnableNmi
(
IN PUCHAR EisaIoStart
);
BOOLEAN
EisaCheckReg
(
IN PUCHAR Port,
IN UCHAR DataMask
);
BOOLEAN
EisaCheckDeepReg
(
IN PUCHAR Port
);
UCHAR
EisaReadRtc
(
IN PUCHAR EisaIoStart,
IN ULONG RtcIndex
);
VOID
EisaOutUchar
(
IN PUCHAR Addr,
IN UCHAR Value
);
UCHAR
EisaInUchar
(
IN PUCHAR Addr
);
// ----------------------------------------------------------------------------
// Define Global Variables
// ----------------------------------------------------------------------------
EISA_DMA_REGS_TEST EisaDmaRegsTest[ EISA_DMAS ] =
{
{ DMA_ADDR_0, DMA_PAGE_0, DMA_HPAGE_0,
DMA_COUNT_0, DMA_HCOUNT_0, DMA_STOP_0 },
{ DMA_ADDR_1, DMA_PAGE_1, DMA_HPAGE_1,
DMA_COUNT_1, DMA_HCOUNT_1, DMA_STOP_1 },
{ DMA_ADDR_2, DMA_PAGE_2, DMA_HPAGE_2,
DMA_COUNT_2, DMA_HCOUNT_2, DMA_STOP_2 },
{ DMA_ADDR_3, DMA_PAGE_3, DMA_HPAGE_3,
DMA_COUNT_3, DMA_HCOUNT_3, DMA_STOP_3 },
{ DMA_ADDR_4, DMA_PAGE_RFR, 0,
DMA_COUNT_4, 0, 0 },
{ DMA_ADDR_5, DMA_PAGE_5, DMA_HPAGE_5,
DMA_COUNT_5, DMA_HCOUNT_5, DMA_STOP_5 },
{ DMA_ADDR_6, DMA_PAGE_6, DMA_HPAGE_6,
DMA_COUNT_6, DMA_HCOUNT_6, DMA_STOP_6 },
{ DMA_ADDR_7, DMA_PAGE_7, DMA_HPAGE_7,
DMA_COUNT_7, DMA_HCOUNT_7, DMA_STOP_7 }
};
EISA_DMA_CTRL_TEST EisaDmaCtrlTest[ 2 ] =
{
{DMA_MASK_CLR03, DMA_MASKS03, DMA_1MASK03, DMA_MASK_STAT03, DMA_CHAIN03},
{DMA_MASK_CLR47, DMA_MASKS47, DMA_1MASK47, DMA_MASK_STAT47, DMA_CHAIN47}
};
BOOLEAN EisaNmiFlag; // for NMI testing
// ----------------------------------------------------------------------------
// PROCEDURE: EisaBusPod:
//
// DESCRIPTION: This function initializes the hardware of the
// specified EISA bus.
//
// ARGUMENTS: BusNumber EISA bus number
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaBusPod
(
IN ULONG BusNumber
)
{
//
// define local variables
//
BOOLEAN IniOk = TRUE; // initialization status
PEISA_DMA_INFO pDmaInfo; // DMA info pointer
PEISA_INT_INFO pIntInfo; // INT info pointer
PEISA_PORT_INFO pPortInfo; // PORT info pointer
PUCHAR EisaIoStart; // EISA I/O virtual address
PRINTDBG("EisaBusPod\n\r"); // DEBUG SUPPORT
//
// initialize variables
//
pDmaInfo = EisaBusInfo[ BusNumber ].DmaInfo;
pIntInfo = EisaBusInfo[ BusNumber ].IntInfo;
pPortInfo = EisaBusInfo[ BusNumber ].PortInfo;
// EisaIoStart = EisaBusInfo[ BusNumber ].IoBusInfo->VirAddr;
EisaIoStart = EISA_IO_VIRTUAL_BASE; // TEMPTEMP
//
// perform any PIC testing and initialization
//
if ( !EisaIntPod( EisaIoStart, pIntInfo ) )
{
IniOk = FALSE;
}
//
// perform any DMA testing and initialization
//
if ( !EisaDmaPod( EisaIoStart, pDmaInfo ) )
{
IniOk = FALSE;
}
//
// perform any other port testing and initialization
//
if ( !EisaOtherPod( EisaIoStart, pPortInfo ) )
{
IniOk = FALSE;
}
//
// return status
//
return IniOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaIntPod:
//
// DESCRIPTION: This function tests and initializes the PIC for the
// specified EISA bus.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pIntInfo Interrupt info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaIntPod
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
)
{
PRINTDBG("EisaIntPod\n\r"); // DEBUG SUPPORT
//
// if ini already done, return status
//
if ( pIntInfo->Flags.IniDone )
{
return (BOOLEAN)(pIntInfo->Flags.Error);
}
pIntInfo->Flags.Error = 1; // be pessimistic
//
// first part of checkpoint
//
EisaCheckpointFirstFase( EisaPic );
//
// disable EISA PICs interrupt chain
//
EisaDisableInt();
do
{
//
// initialize PICs
//
EisaPicIni( EisaIoStart, pIntInfo );
//
// test registers
//
if ( !EisaPicRegTest( EisaIoStart, pIntInfo ));
//
// clear any pending interrupt
//
else if ( !EisaClearPendingInts( EisaIoStart, pIntInfo ));
//
// all done
//
else
{
pIntInfo->IrqPresent = 0;
pIntInfo->IrqShareable = 0;
pIntInfo->IrqLevel = 0;
pIntInfo->Flags.Error = 0;
}
}
while ( EisaCheckpointFinalFase( EisaPic,
pIntInfo->Flags.Error ? FALSE : TRUE ));
//
// return to caller
//
pIntInfo->Flags.IniDone = 1;
return !(BOOLEAN)(pIntInfo->Flags.Error);
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaPicIni:
//
// DESCRIPTION: This function initializes the PICs of the specified
// EISA bus.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pIntInfo Interrupt info pointer
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaPicIni
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
)
{
PUCHAR Pic1Port1, Pic1Port2, Pic2Port1, Pic2Port2;
PRINTDBG("EisaPicIni\n\r"); // DEBUG SUPPORT
//
// initialize variables
//
Pic1Port1 = EisaIoStart + PIC1;
Pic1Port2 = EisaIoStart + PIC1 + 1;
Pic2Port1 = EisaIoStart + PIC2;
Pic2Port2 = EisaIoStart + PIC2 + 1;
//
// Initialize the EISA interrupt controller. There are two cascaded
// interrupt controllers, each of which must initialized with 4 initialize
// control words.
//
EisaOutUchar( Pic1Port1, 0x11 );
EisaOutUchar( Pic2Port1, 0x11 );
//
// The second intitialization control word sets the iterrupt vector to
// 0-15.
//
EisaOutUchar( Pic1Port2, 0x00 );
EisaOutUchar( Pic2Port2, 0x08 );
//
// The thrid initialization control word set the controls for slave mode.
// The master ICW3 uses bit position and the slave ICW3 uses a numberic.
//
EisaOutUchar( Pic1Port2, 0x04 );
EisaOutUchar( Pic2Port2, 0x02 );
//
// The fourth initialization control word is used to specify normal
// end-of-interrupt mode and not special-fully-nested mode.
//
EisaOutUchar( Pic1Port2, 0x01 );
EisaOutUchar( Pic2Port2, 0x01 );
//
// Mask all the interrupts.
//
EisaOutUchar( Pic1Port2, 0xFF );
EisaOutUchar( Pic2Port2, 0xFF );
//
// set all interrupts to edge sensitive
//
EisaOutUchar( EisaIoStart + PIC1_ELCR, 0 );
EisaOutUchar( EisaIoStart + PIC2_ELCR, 0 );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaPicRegTest:
//
// DESCRIPTION: This function performs a test on the PIC registers.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pIntInfo Interrupt info pointer
//
// RETURN: TRUE all correct
// FALSE error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaPicRegTest
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
)
{
//
// initialize variables
//
BOOLEAN RegOk = FALSE; // be pessimistic
PRINTDBG("EisaPicRegTest\n\r"); // DEBUG SUPPORT
//
// check mask of 1st PIC
//
if ( !EisaCheckReg( EisaIoStart + PIC1_MASK, 0xFF ));
//
// check mask of 2nd PIC
//
else if ( !EisaCheckReg( EisaIoStart + PIC2_MASK, 0xFF ));
//
// check ELCR 1, but skip bits 0, 1 and 2 (they are reserved)
//
else if ( !EisaCheckReg( EisaIoStart + PIC1_ELCR, 0xF8 ));
//
// check ELCR 2, but skip bits 0 and 5 (they are reserved)
//
else if ( !EisaCheckReg( EisaIoStart + PIC2_ELCR, 0xDE ));
//
// if we got here, everything is fine
//
else
{
EisaOutUchar( EisaIoStart + PIC1_MASK, 0xFF );
EisaOutUchar( EisaIoStart + PIC2_MASK, 0xFF );
EisaOutUchar( EisaIoStart + PIC1_ELCR, 0 );
EisaOutUchar( EisaIoStart + PIC2_ELCR, 0 );
RegOk = TRUE;
}
return RegOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaClearPendingInts:
//
// DESCRIPTION: This function cleares any pending interrupt at
// the CPU level.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pIntInfo Interrupt info pointer
//
// RETURN: TRUE all correct
// FALSE error
//
// ASSUMPTIONS: interrupts disabled, PIC lines masked and
// all the IRQ lines are edge triggered.
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaClearPendingInts
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo
)
{
//
// initialize variables
//
UCHAR Irr; // interrupt request register
UCHAR Isr; // interrupt service register
USHORT Irq; // interrupt level
PUCHAR PicPort; // I/O address
PRINTDBG("EisaClearPendingInts\n\r"); // DEBUG SUPPORT
//--------------------------------------------------
// send a specific EOI for each in service interrupt
//--------------------------------------------------
//
// read ISR PIC1
//
PicPort = EisaIoStart + PIC1;
EisaOutUchar( PicPort, OCW3_ISR );
Isr = EisaInUchar( PicPort );
//
// send SEOI for each interrupt that was in service
//
for ( Irq=IRQ0; Isr; Irq++, Isr >>= 1 )
{
//
// check if this IRQ was in service
//
if ( !(Isr & 0x1) )
{
continue;
}
//
// send a specific and of interrupt
//
EisaSendSpecificEoi( EisaIoStart, Irq );
}
//
// read ISR PIC2
//
PicPort = EisaIoStart + PIC2;
EisaOutUchar( PicPort, OCW3_ISR );
Isr = EisaInUchar( PicPort );
//
// send SEOI for each interrupt that was in service
//
for ( Irq=IRQ8; Isr; Irq++, Isr >>= 1 )
{
//
// check if this IRQ was in service
//
if ( !(Isr & 0x1) )
{
continue;
}
//
// send a specific and of interrupt
//
EisaSendSpecificEoi( EisaIoStart, Irq );
}
//--------------------------------------------------
// reset all the pending interrupt in the EISA bus
//--------------------------------------------------
//
// read IRR PIC1
//
PicPort = EisaIoStart + PIC1;
EisaOutUchar( PicPort, OCW3_IRR );
// don't play with IRQ 0, 1 and 2
Irr = EisaInUchar( PicPort ) & 0xF8;
//
// clear any PIC1 pending interrupt
//
for ( Irq=IRQ0; Irr; Irq++, Irr >>= 1 )
{
//
// check if this IRQ was pending
//
if ( !(Irr & 0x1) )
{
continue;
}
//
// reset the specified IRQ
//
EisaClearPendingInt( EisaIoStart, pIntInfo, Irq );
}
//
// read IRR PIC2
//
PicPort = EisaIoStart + PIC2;
EisaOutUchar( PicPort, OCW3_IRR );
// don't play with IRQ 8
Irr = EisaInUchar( PicPort ) & 0xFE;
//
// clear any PIC1 pending interrupt
//
for ( Irq=IRQ8; Irr; Irq++, Irr >>= 1 )
{
//
// check if this IRQ was pending
//
if ( !(Irr & 0x1) )
{
continue;
}
//
// reset the specifed IRQ
//
EisaClearPendingInt( EisaIoStart, pIntInfo, Irq );
}
//----------------------------------------------------
// error if it is possible to acknowledge an interrupt
//----------------------------------------------------
EisaAckInt( pIntInfo );
//
// read the ISR
//
PicPort = EisaIoStart + PIC1;
EisaOutUchar( PicPort, OCW3_ISR );
return EisaInUchar( PicPort ) ? FALSE : TRUE;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDmaPod:
//
// DESCRIPTION: This function tests and initializes the DMA for the
// specified EISA bus.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaDmaPod
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
)
{
PRINTDBG("EisaDmaPod\n\r"); // DEBUG SUPPORT
//
// if ini already done, return status
//
if ( pDmaInfo->Flags.IniDone )
{
return (BOOLEAN)(pDmaInfo->Flags.Error);
}
pDmaInfo->Flags.Error = 1; // be pessimistic
do
{
//
// first part of checkpoint
//
EisaCheckpointFirstFase( EisaDma );
//
// Clear the DMA controllers and disable all the channels.
//
EisaOutUchar( EisaIoStart + DMA_MASTER_CLR03, 0);
EisaOutUchar( EisaIoStart + DMA_COMMAND03, 4); // Set channel 0-3 disable
EisaOutUchar( EisaIoStart + DMA_MASTER_CLR47, 0);
EisaOutUchar( EisaIoStart + DMA_COMMAND47, 4); // Set channel 4-7 disable
//
// check mask register
//
if ( !EisaDmaMaskTest( EisaIoStart, pDmaInfo ));
//
// check the low and high page
//
else if ( !EisaDmaPageTest( EisaIoStart, pDmaInfo ));
//
// check the base/current address register
//
else if ( !EisaDmaAddressTest( EisaIoStart, pDmaInfo ));
//
// check the count register
//
else if ( !EisaDmaCountTest( EisaIoStart, pDmaInfo ));
//
// check stop register
//
else if ( !EisaDmaStopTest( EisaIoStart, pDmaInfo ));
//
// if we got here everything is fine
//
else
{
EisaDmaIni( EisaIoStart, pDmaInfo );
pDmaInfo->Flags.Error = 0;
}
}
while ( EisaCheckpointFinalFase( EisaDma,
pDmaInfo->Flags.Error ? FALSE : TRUE ));
//
// return to caller
//
pDmaInfo->Flags.IniDone = 1;
return !(BOOLEAN)(pDmaInfo->Flags.Error);
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDmaMaskTest:
//
// DESCRIPTION: This function tests the mask register.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES: if any error, all DMA channels will be masked.
// if no error, all DMA channels will be masked except
// for channel 4 which is used to cascade the two DMA
// controllers.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaDmaMaskTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
)
{
//
// define local variables
//
UCHAR DmaIndex; // DMA channel within controller
ULONG DmaCtrl = 0; // DMA controller
PUCHAR Clear, MaskAll, Mask, MaskStatus; // port address
BOOLEAN CheckOk = TRUE; // check status
PRINTDBG("EisaDmaMaskTest\n\r"); // DEBUG SUPPORT
//
// one loop per DMA controller
//
do
{
//
// initialize port values
//
Clear = EisaIoStart + EisaDmaCtrlTest[ DmaCtrl ].Clear;
MaskAll = EisaIoStart + EisaDmaCtrlTest[ DmaCtrl ].MaskAll;
Mask = EisaIoStart + EisaDmaCtrlTest[ DmaCtrl ].Mask;
MaskStatus = EisaIoStart + EisaDmaCtrlTest[ DmaCtrl ].MaskStatus;
//
// test mask clear register
//
EisaOutUchar( Clear, 0x00 );
if ( EisaInUchar( MaskStatus ) & 0xF )
{
CheckOk = FALSE;
break;
}
//
// now set all the mask bits
//
EisaOutUchar( MaskAll, 0x0F );
if ( (EisaInUchar( MaskStatus ) & 0x0F) != 0x0F )
{
CheckOk = FALSE;
break;
}
//
// now test each single mask bit
//
for ( DmaIndex=0; DmaIndex < 4; DmaIndex++ )
{
//
// clear single bit
//
EisaOutUchar( Mask, DmaIndex );
if ( EisaInUchar( MaskStatus ) & (1 << DmaIndex))
{
CheckOk = FALSE;
break;
}
//
// set single bit
//
EisaOutUchar( Mask, 0x04 | DmaIndex );
if ( !(EisaInUchar( MaskStatus ) & (1 << DmaIndex)))
{
CheckOk = FALSE;
break;
}
}
}
while( CheckOk && !DmaCtrl++ );
//
// return check status
//
EisaOutUchar( EisaIoStart + DMA_MASKS03, 0x0F );
EisaOutUchar( EisaIoStart + DMA_MASKS47, CheckOk ? 0x0E : 0x0F );
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDmaPageTest:
//
// DESCRIPTION: This function tests the low and high pages.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES: The low and high page registers will be left in
// the power-on state of 0x00.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaDmaPageTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
)
{
//
// define local variables
//
ULONG DmaChannel; // # of DMA channel
PUCHAR Port1, Port2; // general I/O ports
BOOLEAN CheckOk = TRUE; // check status
PRINTDBG("EisaDmaPageTest\n\r"); // DEBUG SUPPORT
//
// one loop per DMA channel
//
for ( DmaChannel = 0; DmaChannel < EISA_DMAS; DmaChannel++ )
{
Port1 = EisaIoStart + EisaDmaRegsTest[ DmaChannel ].LowPage;
Port2 = EisaIoStart + EisaDmaRegsTest[ DmaChannel ].HighPage;
//
// check high page address
//
if ( DmaChannel != 4 )
{
EisaOutUchar( Port2, 0xFF );
if ( !EisaCheckReg( Port2, 0xFF ) )
{
//
// error
//
CheckOk = FALSE;
break;
}
}
//
// check low page register
//
EisaOutUchar( Port1, 0x00 );
if ( !EisaCheckReg( Port1, 0xFF ) )
{
//
// error
//
CheckOk = FALSE;
break;
}
//
// check if high reg has been cleared writing to low reg
//
if ( DmaChannel != 4 && EisaInUchar( Port2 ) != 0 )
{
//
// error
//
CheckOk = FALSE;
break;
}
}
//
// return check status
//
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDmaAddressTest:
//
// DESCRIPTION: This function tests the address register.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES: The address registers will be left in the power-on
// state of 0x0000.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaDmaAddressTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
)
{
//
// define local variables
//
ULONG DmaChannel; // # of DMA channel
PUCHAR Port1, Port2; // general I/O ports
BOOLEAN CheckOk = TRUE; // check status
PRINTDBG("EisaDmaAddressTest\n\r"); // DEBUG SUPPORT
//
// reset the internal DMA pointers
//
EisaOutUchar( EisaIoStart + DMA_FF_CLR03, 0x00 );
EisaOutUchar( EisaIoStart + DMA_FF_CLR47, 0x00 );
//
// one loop per DMA channel
//
for ( DmaChannel = 0; DmaChannel < EISA_DMAS; DmaChannel++ )
{
//
// load high and address register addresses
//
Port1 = EisaIoStart + EisaDmaRegsTest[ DmaChannel ].Address;
Port2 = EisaIoStart + EisaDmaRegsTest[ DmaChannel ].HighPage;
//
// write a value different from zero in high page
//
if ( DmaChannel != 4 )
{
EisaOutUchar( Port2, 0xFF );
}
//
// check word register using one 8 bit port
//
if ( !EisaCheckDeepReg( Port1 ) )
{
//
// error
//
CheckOk = FALSE;
break;
}
//
// initialize register
//
EisaOutUchar( Port1, 0x00 );
EisaOutUchar( Port1, 0x00 );
//
// check if high reg has been cleared writing to low reg
//
if ( DmaChannel != 4 && EisaInUchar( Port2 ) != 0 )
{
//
// error
//
CheckOk = FALSE;
break;
}
}
//
// return check status
//
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDmaCountTest:
//
// DESCRIPTION: This function tests the count register.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES: The count registers will be left in the power-on
// state of 0x00 (high) and 0xFFFF (low).
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaDmaCountTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
)
{
//
// define local variables
//
ULONG DmaChannel; // # of DMA channel
PUCHAR Port1, Port2; // general I/O ports
BOOLEAN CheckOk = TRUE; // check status
PRINTDBG("EisaDmaCountTest\n\r"); // DEBUG SUPPORT
//
// reset the internal DMA pointers
//
EisaOutUchar( EisaIoStart + DMA_FF_CLR03, 0x00 );
EisaOutUchar( EisaIoStart + DMA_FF_CLR47, 0x00 );
//
// one loop per DMA channel
//
for ( DmaChannel = 0; DmaChannel < EISA_DMAS; DmaChannel++ )
{
//
// load high and address register addresses
//
Port1 = EisaIoStart + EisaDmaRegsTest[ DmaChannel ].LowCount;
Port2 = EisaIoStart + EisaDmaRegsTest[ DmaChannel ].HighCount;
//
// check high count register
//
if ( DmaChannel != 4 )
{
EisaOutUchar( Port2, 0xFF );
if ( !EisaCheckReg( Port2, 0xFF ) )
{
//
// error
//
CheckOk = FALSE;
break;
}
}
//
// check word register using one 8 bit port
//
if ( !EisaCheckDeepReg( Port1 ) )
{
//
// error
//
CheckOk = FALSE;
break;
}
//
// initialize register
//
EisaOutUchar( Port1, 0xFF );
EisaOutUchar( Port1, 0xFF );
//
// check if high reg has been cleared writing to low reg
//
if ( DmaChannel != 4 && EisaInUchar( Port2 ) != 0 )
{
//
// error
//
CheckOk = FALSE;
break;
}
}
//
// return check status
//
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDmaStopTest:
//
// DESCRIPTION: This function tests the stop register.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES: The count registers will be left in the power-on
// state of 0xFFFFFC.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaDmaStopTest
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
)
{
//
// define local variables
//
ULONG DmaChannel; // # of DMA channel
PUCHAR Stop; // general I/O ports
BOOLEAN CheckOk = TRUE; // check status
PRINTDBG("EisaDmaStopTest\n\r"); // DEBUG SUPPORT
//
// one loop per DMA channel
//
for ( DmaChannel = 0; DmaChannel < EISA_DMAS; DmaChannel++ )
{
Stop = EisaIoStart + EisaDmaRegsTest[ DmaChannel ].Stop;
//
// check high page address
//
if ( DmaChannel != 4 )
{
//
// initialize stop registers and test them
//
EisaOutUchar( Stop, 0x00 );
EisaOutUchar( Stop+1, 0x00 );
EisaOutUchar( Stop+2, 0x00 );
if ( !EisaCheckReg( Stop, 0xFC ) ||
!EisaCheckReg( Stop+1, 0xFF ) ||
!EisaCheckReg( Stop+2, 0xFF ) )
{
//
// error
//
CheckOk = FALSE;
break;
}
}
}
//
// return check status
//
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDmaIni:
//
// DESCRIPTION: This function initializes the DMA controllers of
// the specified EISA bus.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaDmaIni
(
IN PUCHAR EisaIoStart,
IN PEISA_DMA_INFO pDmaInfo
)
{
//
// define local variables
//
ULONG Index; // general index
ULONG DmaCtrl = 0; // DMA controller
UCHAR Reg = 0; // DMA command Register
PUCHAR Port; // general port
PRINTDBG("EisaDmaIni\n\r"); // DEBUG SUPPORT
//-----------------------------------------------------------------
//
// set command registers for fixed priotiry, DREQ active high,
// DACK# active low and channels enabled
//
EisaOutUchar( EisaIoStart + DMA_COMMAND03, Reg );
EisaOutUchar( EisaIoStart + DMA_COMMAND47, Reg );
//-----------------------------------------------------------------
//
// initialize mode register for channel 4. The other channels will
// be initializated during the EisaRequestDmaTransfer functions.
//
EisaOutUchar( EisaIoStart + DMA_MODE47, 0xC0 );
//-----------------------------------------------------------------
//
// disable the chaining mode
//
do
{
//
// load the controller port address
//
Port = EisaIoStart + EisaDmaCtrlTest[ DmaCtrl ].Chain;
//
// disable chaining mode
//
for ( Index = 0; Index < 4 ; Index++ )
{
EisaOutUchar( Port, 0x00 );
}
}
while( !DmaCtrl++ );
//-----------------------------------------------------------------
//
// initialize DMA structures
//
for ( Index = 0; Index < EISA_DMAS; Index++ )
{
pDmaInfo->DmaFlags[ Index ].Busy = 0;
pDmaInfo->DmaFlags[ Index ].Tc = 0;
// stop enabled, T-C output, ISA compatible,
// 8 bit I/O byte count and DMA channel
// (see DMA configuration).
pDmaInfo->DmaExtReg[ Index ] = Index < 4 ? Index : Index - 4;
}
//
// all done
//
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaOtherPod:
//
// DESCRIPTION: This function tests and initializes all the general
// ports of the EISA bus.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pPortInfo port info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaOtherPod
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
)
{
//
// define local variables
//
BOOLEAN ChkOk;
PRINTDBG("EisaOtherPod\n\r"); // DEBUG SUPPORT
//
// if ini already done, return status
//
if ( pPortInfo->Flags.IniDone )
{
return (BOOLEAN)(pPortInfo->Flags.Error);
}
pPortInfo->Flags.Error = 0;
//
// check and initialize NMI
//
do
{
EisaCheckpointFirstFase( EisaNmi );
if ( !( ChkOk = EisaNmiTest( EisaIoStart, pPortInfo )))
{
pPortInfo->Flags.Error = 1;
}
}
while ( EisaCheckpointFinalFase( EisaNmi, ChkOk ));
//
// check and initialize refresh
//
do
{
EisaCheckpointFirstFase( EisaRefresh );
if ( !( ChkOk = EisaRefreshTest( EisaIoStart, pPortInfo )))
{
pPortInfo->Flags.Error = 1;
}
}
while ( EisaCheckpointFinalFase( EisaRefresh, ChkOk ));
//
// check and initialize port 61
//
do
{
EisaCheckpointFirstFase( EisaPort61 );
if ( !( ChkOk = EisaPort61Test( EisaIoStart, pPortInfo )))
{
pPortInfo->Flags.Error = 1;
}
}
while ( EisaCheckpointFinalFase( EisaPort61, ChkOk ));
//
// check and initialize timer1
//
do
{
EisaCheckpointFirstFase( EisaTimer1 );
if ( !( ChkOk = EisaTimer1Test( EisaIoStart, pPortInfo )))
{
pPortInfo->Flags.Error = 1;
}
}
while ( EisaCheckpointFinalFase( EisaTimer1, ChkOk ));
//
// check and initialize timer2
//
do
{
EisaCheckpointFirstFase( EisaTimer2 );
if ( !( ChkOk = EisaTimer2Test( EisaIoStart, pPortInfo )))
{
pPortInfo->Flags.Error = 1;
}
}
while ( EisaCheckpointFinalFase( EisaTimer2, ChkOk ));
//
// return check status
//
pPortInfo->Flags.IniDone = 1;
return !(BOOLEAN)(pPortInfo->Flags.Error);
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaNmiTest:
//
// DESCRIPTION: This function tests and initializes the EISA NMI.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pPortInfo port info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS: EisaNmiFlag
//
// NOTES: if any error, the NMI will be disabled (real-time clock)
// if no error, the NMI will be left enabled but with all
// the NMI sources disabled.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaNmiTest
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
)
{
PRINTDBG("EisaNmiTest\n\r"); // DEBUG SUPPORT
// NOTE: NMI test is disabled for JAZZ.
#if 0
//
// install an NMI interrupt handler
//
EisaNmiFlag = FALSE;
FwInstallIntVector( EISA_NMI_VECTOR, EisaNmiHandlerTest );
//----------------------------------------------------------------
//
// disable all the NMI sources
// (using the extended NMI status and contrl port and system control port B)
//
EisaOutUchar( EisaIoStart + EISA_SYS_EXT_NMI, 0x00 );
//
// note that the following operation clears any pending parity or I/O check
// errors.
//
EisaDisableParityIoCheck( EisaIoStart );
EisaEnableNmi( EisaIoStart );
//
// ... wait.
//
ArcEisaStallProcessor( EISA_WAIT_NMI_TEST );
EisaDisableNmi( EisaIoStart );
//
// return error if an hot EISA NMI
//
if ( EisaNmiFlag )
{
return FALSE;
}
//----------------------------------------------------------------
//
// enable all the NMI sources used by the fw
//
EisaOutUchar( EisaIoStart + EISA_SYS_EXT_NMI, EISA_ENABLE_NMI_32 );
EisaEnableParityIoCheck( EisaIoStart );
EisaEnableNmi( EisaIoStart );
//
// ... wait
//
ArcEisaStallProcessor( EISA_WAIT_NMI_TEST );
EisaDisableNmi( EisaIoStart );
//
// return error if an hot EISA NMI
//
if ( EisaNmiFlag )
{
return FALSE;
}
//----------------------------------------------------------------
//
// enable NMI I/O port and NMI; and force one to come
//
EisaOutUchar( EisaIoStart + EISA_SYS_EXT_NMI, EISA_ENABLE_NMI_IO );
EisaEnableNmi( EisaIoStart );
EisaOutUchar( EisaIoStart + EISA_SW_NMI_PORT, 0x00 );
//
// ... wait
//
ArcEisaStallProcessor( EISA_WAIT_NMI_TEST );
EisaDisableNmi( EisaIoStart );
//
// return an error if not NMI
//
if ( !EisaNmiFlag )
{
return FALSE;
}
//
// enable the NMI and all the NMI sources used by fw
// ( the software NMI will be disabled )
//
FwInstallIntVector( EISA_NMI_VECTOR, EisaNmiHandler );
EisaOutUchar( EisaIoStart + EISA_SYS_EXT_NMI, EISA_ENABLE_NMI_32 );
EisaEnableNmi( EisaIoStart );
//
// return
//
#endif // 0
return TRUE;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaNmiHandlerTest:
//
// DESCRIPTION: This function is the NMI handler during the NMI test.
//
// ARGUMENTS: Cause R4000 cause register
//
// RETURN: TRUE interrupt recognized
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS: EisaNmi
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaNmiHandlerTest
(
IN ULONG Couse
)
{
PRINTDBG("EisaNmiHandlerTest\n\r"); // DEBUG SUPPORT
StatusReg( ~STATUS_EISA_NMI, (ULONG)0 );
EisaNmiFlag = TRUE;
return TRUE;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaNmiHandler:
//
// DESCRIPTION: This function handles the EISA NMI.
// An NMI can be caused by :
//
// 1) System/Adapter board memory parity error
// ( port 61h bit 7 set )
// 2) Adapter I/O channel check error
// ( port 61h bit 6 set )
// 3) Fail-Safe Timer (channle 2 or the interval Timer 2)
// ( port 461h bit 7 set ) - NOT CHECKED *
// 4) DMA bus timeout error
// ( port 461h bit 6 set )
// 5) Write to NMI port 462h
// ( port 461h bit 5 set ) - NOT CHECKED *
// 6) Coprocessor exception interrupt - NOT CHECKED *
//
// An error message will be displayed indicating the
// cause of the error and the system will halt.
// The only allowed operation after an NMI is to reset
// the machine.
//
// * The firmware doesn't enable these NMI sources.
//
// ARGUMENTS: Cause R4000 cause register
//
// RETURN: TRUE interrupt recognized
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS: EisaBusInfo
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaNmiHandler
(
IN ULONG Couse
)
{
//
// define local variables
//
PUCHAR EisaIoStart; // eisa I/O virtual address
UCHAR NmiData, ExtNmiData; // NMI status
ULONG BusNumber = 0; // eisa bus number
ULONG Slots; // # slots
BOOLEAN NmiPresent; // NMI source status
PRINTDBG("EisaNmiHandler\n\r"); // DEBUG SUPPORT
//
// disable NMI at CPU level
//
StatusReg( ~STATUS_EISA_NMI, (ULONG)0 );
//
// clear screen and display message
//
FwClearScreen();
FwPrint(EISA_HOT_NMI_MSG);
EisaCheckpointFirstFase( EisaHotNmi );
do
{
//
// print eisa bus number
//
FwPrint( EISA_BUS_NUMBER_MSG , BusNumber );
//
// initialize variables
//
EisaIoStart = EisaBusInfo[ BusNumber ].IoBusInfo->VirAddr;
Slots = EisaBusInfo[ BusNumber ].SlotsInfo->PhysSlots;
NmiPresent = FALSE;
//
// read NMI status
//
NmiData = EisaInUchar( EisaIoStart + EISA_SYS_CTRL_PORTB );
ExtNmiData = EisaInUchar( EisaIoStart + EISA_SYS_EXT_NMI );
//
// check if there is a parity error
//
if ( NmiData & EISA_PARITY_STATUS )
{
EisaParityError( EisaIoStart );
NmiPresent = TRUE;
}
//
// check if there is a I/O channel check
//
if ( NmiData & EISA_IOCHK_STATUS )
{
EisaIoChkError( EisaIoStart, Slots );
NmiPresent = TRUE;
}
//
// check if there is a DMA or bus master timeout error
//
if ( ExtNmiData & EISA_NMI_32_STATUS )
{
if ( ExtNmiData & EISA_NMI_32_CAUSE )
{
EisaBusTimeoutError( EisaIoStart, Slots );
}
else
{
EisaSlaveTimeoutError( EisaIoStart, Slots );
}
NmiPresent = TRUE;
}
//
// if no NMI for this bus, display "no problem"
//
if ( !NmiPresent )
{
FwPrint(EISA_NMI_NOT_FOUND_MSG);
}
}
while( ++BusNumber < EISA_BUSES );
//
// print final message and hang
//
EisaCheckpointFinalFase( EisaHotNmi, FALSE );
while(1); // just to be sure
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaParityError:
//
// DESCRIPTION: This function displays the error message and
// returns to the caller without do any other thing.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaParityError
(
IN PUCHAR EisaIoStart
)
{
PRINTDBG("EisaParityError\n\r"); // DEBUG SUPPORT
FwPrint(EISA_PARITY_ERROR_MSG , ASCII_CSI );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaIoChkError:
//
// DESCRIPTION: This function tries to find the slot in error.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// Slots # slots
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaIoChkError
(
IN PUCHAR EisaIoStart,
IN ULONG Slots
)
{
//
// define local variabls
//
ULONG AdapId; // adapter ID
PUCHAR ExpCtrl; // expansion board ctrl addr
UCHAR CtrlBits; // port value
PRINTDBG("EisaIoChkError\n\r"); // DEBUG SUPPORT
//
// display first message
//
FwPrint(EISA_IO_CHECK_ERROR_MSG , ASCII_CSI);
//
// check all slots starting from the last one
//
while( --Slots )
{
//
// check if there is an adapter with a readable ID
//
if ( !EisaReadReadyId( EisaIoStart, Slots, &AdapId ) ||
AdapId == NO_ADAP_ID )
{
continue;
}
ExpCtrl = EisaIoStart + 0x1000 * Slots + EXPANSION_BOARD_CTRL_BITS;
//
// test the IOCHKERR bit of the Expansion Board Contrl Bits.
// the IOCHKERR bit can be read to determine if an expansion
// board has a pending error. The expansion board indicates a
// pending error by setting IOCHKERR, clearing the ENABLE bit
// and entering the disabled state.
//
// note: because the EISA expansion boards are not required to
// support this port, we need the following simple
// assumption: this I/O port is not supported if the value
// read from it is 0xFF.
//
if ((CtrlBits = EisaInUchar( ExpCtrl )) != 0xFF )
{
if ( CtrlBits & EISA_IOCHKERR )
{
break;
}
}
}
//
// print final message
//
if ( !Slots )
{
FwPrint( EISA_IO_CHECK_NOT_SUP_MSG ); // slot not found
}
else
{
FwPrint(EISA_IN_SLOT_MSG , Slots ); // slot in error
}
//
// all done, exit
//
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaBusTimeoutError:
//
// DESCRIPTION: This function displays the bus master number in error.
// If a 32-bit bus master tries to hold the bus beyond
// the BUS limit (8 usec if BCLK = 8 MHz), the ISP will
// assert the NMI and RSTDRV signals togheter.
// The RSTDRV signal will remain aserted until the NMI has
// been reset by plsing bit 3 of I/O port 461h.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// Slots # slots
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaBusTimeoutError
(
IN PUCHAR EisaIoStart,
IN ULONG Slots
)
{
//
// define local variables
//
UCHAR Status; // 32-bit bus master status
ULONG BusMaster = 0; // bus master number in error
PUCHAR ExtNmi; // extended NMI control
PRINTDBG("EisaBusTimeoutError\n\r"); // DEBUG SUPPORT
//
// find the bus master group in error
//
if ( ~(Status = EisaInUchar(EisaIoStart+EISA_BUSMASTER_LSTATUS)) & 0xFF )
{
BusMaster = 1;
}
else if ( ~(Status = (EisaInUchar(EisaIoStart+EISA_BUSMASTER_HSTATUS) |
0x80)) & 0xFF )
{
BusMaster = 9;
}
//
// find the bus master number in error and display it
//
FwPrint( EISA_BUS_MASTER_MSG, ASCII_CSI );
if ( BusMaster )
{
for (; Status & 1; Status >>= 1, BusMaster++ );
FwPrint(EISA_TIMEOUT_MSG , BusMaster );
}
else
{
FwPrint(EISA_TIMEOUT2_MSG ); // bus master not found
}
//
// reset NMI
//
ExtNmi = EisaIoStart + EISA_SYS_EXT_NMI;
EisaOutUchar( ExtNmi, EisaInUchar( ExtNmi ) & ~EISA_ENABLE_NMI_32 );
//
// all done
//
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaSlaveTimeoutError:
//
// DESCRIPTION: This function displays an error message.
// If a memory slave extends a cycle long enough that
// CMD# is active for more than 256 BCLKs (32usec if
// BCLK = 8MHz), the ISP will assert the NMI and RSTDRV
// signals togheter.
// The RSTDRV signal will remain aserted until the NMI has
// been reset by plsing bit 3 of I/O port 461h.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// Slots # slots
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaSlaveTimeoutError
(
IN PUCHAR EisaIoStart,
IN ULONG Slots
)
{
//
// define local variables
//
PUCHAR ExtNmi; // extended NMI control
PRINTDBG("EisaSlaveTimeoutError\n\r"); // DEBUG SUPPORT
//
// display the error message
//
FwPrint(EISA_SLAVE_TIMEOUT_MSG , ASCII_CSI );
//
// reset NMI
//
ExtNmi = EisaIoStart + EISA_SYS_EXT_NMI;
EisaOutUchar( ExtNmi, EisaInUchar( ExtNmi ) & ~EISA_ENABLE_NMI_32 );
//
// all done
//
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaRefreshTest:
//
// DESCRIPTION: This function tests and initializes the EISA refresh.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pPortInfo port info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES: the refresh will be left enabled.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaRefreshTest
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
)
{
//
// define local variables
//
BOOLEAN CheckOk = FALSE; // checking status
ULONG Retry; // # retry
PUCHAR Port; // general I/O port
PRINTDBG("EisaRefreshTest\n\r"); // DEBUG SUPPORT
//
// clear refresh pages
//
EisaOutUchar( EisaIoStart + DMA_PAGE_RFR, 0x00 );
EisaOutUchar( EisaIoStart + DMA_HPAGE_RFR, 0x00 );
//
// start timer 1, counter 1
//
EisaOutUchar( EisaIoStart + EISA_TIMER1_CTRL, 0x54 );
EisaOutUchar( EisaIoStart + EISA_TIMER1_COUNTER1, EISA_RFR_COUNT );
//
// check if refresh bit in the system control port B is toggling
//
Port = EisaIoStart + EISA_SYS_CTRL_PORTB;
for ( CheckOk = FALSE, Retry = EISA_RFR_RETRY; Retry; Retry-- )
{
//
// check if refresh bit is set
//
if ( READ_REGISTER_UCHAR( Port ) & EISA_REFRESH )
{
//
// yes, exit loop
//
CheckOk = TRUE;
break;
}
}
//
// if time-out, exit with error
//
if ( !Retry )
{
return FALSE;
}
//
// check if refresh bit in the system control port B is toggling
//
for ( CheckOk = FALSE, Retry = EISA_RFR_RETRY; Retry; Retry-- )
{
//
// check if refresh bit is cleared
//
if ( !(READ_REGISTER_UCHAR( Port ) & EISA_REFRESH) )
{
//
// yes, exit loop
//
CheckOk = TRUE;
break;
}
}
//
// return check status
//
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaPort61Test:
//
// DESCRIPTION: This function tests and initializes the system
// control port B.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pPortInfo port info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS: NMI has already been tested.
//
// CALLS:
//
// GLOBALS:
//
// NOTES: The parity and the I/O channel check, The speaker gate
// and speaker timer will be left disabled.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaPort61Test
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
)
{
//
// define local variables
//
PUCHAR Port; // genearl I/O port
BOOLEAN CheckOk = TRUE; // check status
PRINTDBG("EisaPort61Test\n\r"); // DEBUG SUPPORT
Port = EisaIoStart + EISA_SYS_CTRL_PORTB;
//
// gate signal for speaker timer
//
EisaOutUchar( Port, EISA_SPEAKER_GATE );
if ( (EisaInUchar( Port ) & 0x0F) != EISA_SPEAKER_GATE )
{
CheckOk = FALSE;
}
//
// speaker timer contrl
//
if ( CheckOk )
{
EisaOutUchar( Port, EISA_SPEAKER_TIMER);
if ( (EisaInUchar( Port ) & 0x0F) != EISA_SPEAKER_TIMER )
{
CheckOk = FALSE;
}
}
//
// parity bit
//
if ( CheckOk )
{
EisaOutUchar( Port, EISA_PARITY_OFF);
if ( (EisaInUchar( Port ) & 0x0F) != EISA_PARITY_OFF )
{
CheckOk = FALSE;
}
}
//
// I/O channel check
//
if ( CheckOk )
{
EisaOutUchar( Port, EISA_IOCHK_OFF );
if ( (EisaInUchar( Port ) & 0x0F) != EISA_IOCHK_OFF )
{
CheckOk = FALSE;
}
}
//
// initialize port 61h.
//
EisaOutUchar( Port, 0x00 );
//
// return check status
//
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaTimer1Test:
//
// DESCRIPTION: This function tests only the counter 2 of
// timer 1 (speaker).
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pPortInfo port info pointer
//
// RETURN: TRUE All done
// FALSE Error
//
// ASSUMPTIONS: NMI has already been tested.
//
// CALLS:
//
// GLOBALS:
//
// NOTES: The functions stops timer1 counter0, turns off the
// timer1 counter2 gate and disable the speaker output.
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaTimer1Test
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
)
{
//
// define local variables
//
BOOLEAN CheckOk = FALSE; // check status
PUCHAR Ctrl, Port, Port61; // genearl I/O ports
PRINTDBG("EisaTimer1Test\n\r"); // DEBUG SUPPORT
//
// initialize variables
//
Ctrl = EisaIoStart + EISA_TIMER1_CTRL;
Port = EisaIoStart + EISA_TIMER1_COUNTER2;
Port61 = EisaIoStart + EISA_SYS_CTRL_PORTB;
//
// disable timer1 counter2 gate, speaker output
//
EisaOutUchar( Port61, 0x00 );
//
// program timer 1, counter 2 (speaker) in 16-bit count, mode 0
//
EisaOutUchar( Ctrl, 0xB0 );
EisaOutUchar( Port, 0x00 );
EisaOutUchar( Port, 0x80 );
//
// check register
//
if ( !(EisaCheckDeepReg( Port )));
//
// check speaker output. It must be low otherwise there is an error
//
else if ( EisaInUchar( Port61 ) & EISA_SPEAKER_OUT );
//
// enable speaker gate to enable the counter, wait for some time and
// check if speaker output is high, if not error out
//
else
{
//
// enable speaker gate
//
EisaOutUchar( Port61, EISA_SPEAKER_GATE );
//
// wait 40msec = ~ ( 0x8000 / 1.193 Mhz ) + something
//
// NOTE: Wait longer for JAZZ.
// ArcEisaStallProcessor( 40 * 1000 );
ArcEisaStallProcessor( 160 * 1000 );
//
// check speaker output
//
if ( EisaInUchar( Port61 ) & EISA_SPEAKER_OUT )
{
//
// initialize timer1 counter2 in 16-bit , mode 3
//
// EisaOutUchar( Ctrl, 0xB6 );
// EisaOutUchar( Port,
// (UCHAR)( EISA_SPEAKER_CLOCK/EISA_SPEAKER_FREQ ));
// EisaOutUchar( Port,
// (UCHAR)( (EISA_SPEAKER_CLOCK/EISA_SPEAKER_FREQ) >> 8 ));
//
// all done
//
CheckOk = TRUE;
}
}
//
// disable speaker gate, speaker output
//
EisaOutUchar( Port61, 0x00 );
//
// stop timer1 counter0 sending the control word without the count value
//
EisaOutUchar( Ctrl, 0x30 );
//
// all done, exit
//
return CheckOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaTimer2Test:
//
// DESCRIPTION: This function stops the timer2 counter0 (Fail-safe).
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pPortInfo port info pointer
//
// RETURN: TRUE All done
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaTimer2Test
(
IN PUCHAR EisaIoStart,
IN PEISA_PORT_INFO pPortInfo
)
{
PRINTDBG("EisaTimer2Test\n\r"); // DEBUG SUPPORT
//
// stop timer2 counter0 sending the control word without the count value
//
EisaOutUchar( EisaIoStart + EISA_TIMER2_CTRL, 0x30 );
//
// all done, exit
//
return TRUE;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaClearPendingInt:
//
// DESCRIPTION: This function cleares the specified pending interrupt.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pIntInfo interrupt info pointer
// Irq IRQ to reset
//
// RETURN: none
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaClearPendingInt
(
IN PUCHAR EisaIoStart,
IN PEISA_INT_INFO pIntInfo,
IN USHORT Irq
)
{
//
// define local variables
//
PUCHAR PicMask1, PicMask2; // I/O port address
PRINTDBG("EisaClearPendingInt\n\r"); // DEBUG SUPPORT
//
// initialize variables
//
PicMask1 = EisaIoStart + PIC1_MASK;
PicMask2 = EisaIoStart + PIC2_MASK;
//
// unmask the specified IRQ
//
if ( Irq > IRQ7 )
{
EisaOutUchar( PicMask1, (UCHAR)(~(1 << IRQ2)));
EisaOutUchar( PicMask2, (UCHAR)(~(1 << (Irq % 8))));
}
else
{
EisaOutUchar( PicMask1, (UCHAR)(~(1 << Irq )));
}
//
// acknowledge the interrupt
//
EisaAckInt( pIntInfo );
//
// mask off all the IRQ lines
//
EisaOutUchar( PicMask1, 0xFF );
EisaOutUchar( PicMask2, 0xFF );
//
// and send a specific EOF
//
EisaSendSpecificEoi( EisaIoStart, Irq );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaIntAck:
//
// DESCRIPTION: This function acknowledges the highest priority
// interrupt.
//
// ARGUMENTS: pIntInfo interrupt info pointer (not used)
//
// RETURN: Int interrupt acknowledged.
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
UCHAR
EisaAckInt
(
IN PEISA_INT_INFO pIntInfo
)
{
UCHAR Int;
PRINTDBG("EisaAckInt\n\r"); // DEBUG SUPPORT
Int = READ_REGISTER_UCHAR( EISA_INT_ACK_ADDR );
EISA_IO_DELAY;
return Int;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaSendSpecificEoi:
//
// DESCRIPTION: This function sends a specific EOI to the spcified
// IRQ line.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// Irq IRQ to reset
//
// RETURN: none
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaSendSpecificEoi
(
IN PUCHAR EisaIoStart,
IN USHORT Irq
)
{
//
// define local variables
//
PUCHAR PicPort1, PicPort2;
PRINTDBG("EisaSendSpecificEoi\n\r"); // DEBUG SUPPORT
//
// initialize local variables
//
PicPort1 = EisaIoStart + PIC1;
PicPort2 = EisaIoStart + PIC2;
//
// send a specific EOI
//
if ( Irq > IRQ7 )
{
EisaOutUchar( PicPort2, OCW2_SEOI | ( Irq % 8 ));
EisaOutUchar( PicPort1, OCW2_SEOI | IRQ2 );
}
else
{
EisaOutUchar( PicPort1, OCW2_SEOI | Irq );
}
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDisableParityIoCheck:
//
// DESCRIPTION: This function disables the partiy and I/O check NMIs.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
//
// RETURN: none
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaDisableParityIoCheck
(
IN PUCHAR EisaIoStart
)
{
PRINTDBG("EisaDisableParityIoCheck\n\r"); // DEBUG SUPPORT
EisaOutUchar( EisaIoStart + EISA_SYS_CTRL_PORTB,
( EisaInUchar( EisaIoStart + EISA_SYS_CTRL_PORTB ) |
EISA_PARITY_OFF | EISA_IOCHK_OFF ) & 0x0F );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaEnableParityIoCheck:
//
// DESCRIPTION: This function enables the partiy and I/O check NMIs.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
//
// RETURN: none
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaEnableParityIoCheck
(
IN PUCHAR EisaIoStart
)
{
PRINTDBG("EisaEnableParityIoCheck\n\r"); // DEBUG SUPPORT
EisaOutUchar( EisaIoStart + EISA_SYS_CTRL_PORTB,
( EisaInUchar( EisaIoStart + EISA_SYS_CTRL_PORTB ) &
~(EISA_PARITY_OFF | EISA_IOCHK_OFF)) & 0x0F );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDisableInt:
//
// DESCRIPTION: The function disables the EISA interrupts at CPU
// level.
//
// ARGUMENTS: none
//
// RETURN: none
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaDisableInt
(
VOID
)
{
PRINTDBG("EisaDisableInt\n\r"); // DEBUG SUPPORT
StatusReg( ~STATUS_EISA, (ULONG)0 );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaDisableNmi:
//
// DESCRIPTION: The function disables the NMI using the real-time
// clock port.
//
// ARGUMENTS: none
//
// RETURN: none
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaDisableNmi
(
IN PUCHAR EisaIoStart
)
{
PRINTDBG("EisaDisableNmi\n\r"); // DEBUG SUPPORT
//
// at real-time clock address port
//
EisaOutUchar(EisaIoStart+EISA_RTC_CTRL, EISA_DISABLE_NMI+RTC_C_REG);
READ_REGISTER_UCHAR( RTC_VIRTUAL_BASE );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaEnableNmi:
//
// DESCRIPTION: The function enables the NMI line.
// The following ports are used :
//
// . real-time clock ctrl port
// . CPU status register port
//
// ARGUMENTS: none
//
// RETURN: none
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaEnableNmi
(
IN PUCHAR EisaIoStart
)
{
PRINTDBG("EisaEnableNmi\n\r"); // DEBUG SUPPORT
//
// at real-time clock address port
//
EisaReadRtc( EisaIoStart, RTC_C_REG );
// NOTE: this code has been removed because of a R4000 CPU bug.
//
// //
// // at interrupt enable register
// //
//
// EisaBeginCriticalSection();
// WRITE_REGISTER_UCHAR(INT_ENABLE_ADDR, READ_REGISTER_UCHAR(INT_ENABLE_ADDR) | 0x08);
// EisaEndCriticalSection();
//
//
// at CPU level
//
StatusReg( (ULONG)-1, STATUS_EISA_NMI + STATUS_IE );
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaCheckReg:
//
// DESCRIPTION: This function performs read/write test on an 8 bit
// I/O port using the following patterns: FFh, AAh, 55h
// and 00h. The original part value is restored before
// returning.
//
// ARGUMENTS: Port port address
// DataMask mask for test pattern to compare with
// data
//
// RETURN: TRUE test completed successfully
// FALSE error
//
// ASSUMPTIONS: none
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaCheckReg
(
IN PUCHAR Port,
IN UCHAR DataMask
)
{
//
// define local variables
//
BOOLEAN CompOk = TRUE;
UCHAR Save, Program;
PRINTDBG("EisaCheckReg\n\r"); // DEBUG SUPPORT
//
// save original value
//
Save = EisaInUchar( Port );
//
// one loop per each value
//
for ( Program = 0; ; Program += 0x55 )
{
//
// write port, read it back and compare values
//
EisaOutUchar( Port, Program );
if ((EisaInUchar( Port ) & DataMask) != (Program & DataMask))
{
//
// error, value are not the same
//
CompOk = FALSE;
break;
}
//
// exit loop if last value
//
if ( Program == 0xFF )
{
break;
}
}
//
// restore original value before returning
//
EisaOutUchar( Port, Save );
return CompOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaCheckDeepReg:
//
// DESCRIPTION: This function checks the 2x8bit registers.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// pDmaInfo DMA info pointer
//
// RETURN: TRUE check completed successfully
// FALSE error
//
// ASSUMPTIONS: The internal pointer has already been resetted.
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
BOOLEAN
EisaCheckDeepReg
(
IN PUCHAR Port
)
{
//
// define local variables
//
UCHAR LSave, HSave, Program, LCheck, HCheck;
BOOLEAN CompOk = TRUE;
PRINTDBG("EisaCheckDeepReg\n\r"); // DEBUG SUPPORT
//
// save original value
//
LSave = EisaInUchar( Port );
HSave = EisaInUchar( Port );
//
// one loop per each value
//
for ( Program = 0; ; Program += 0x55 )
{
//
// write port and read it back
//
EisaOutUchar( Port, Program );
EisaOutUchar( Port, Program );
EISA_IO_DELAY; //
EISA_IO_DELAY; // for the timer chip
EISA_IO_DELAY; //
LCheck = EisaInUchar( Port );
HCheck = EisaInUchar( Port );
//
// check the read values
//
if ( LCheck != Program || HCheck != Program )
{
//
// error, value are not the same
//
CompOk = FALSE;
break;
}
//
// exit loop if last value
//
if ( Program == 0xFF )
{
break;
}
}
//
// restore the original value
//
EisaOutUchar( Port, LSave );
EisaOutUchar( Port, HSave );
return CompOk;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaReadRtc:
//
// DESCRIPTION: This function returns the value of the specified
// real-time clock internal address.
//
// ARGUMENTS: EisaIoStart EISA I/O virtual address
// RtcIndex index within the RTC
//
// RETURN: Value register value
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
UCHAR
EisaReadRtc
(
IN PUCHAR EisaIoStart,
IN ULONG RtcIndex
)
{
UCHAR Value;
PRINTDBG("EisaReadRtc\n\r"); // DEBUG SUPPORT
// NOTE: CriticalSection is not supported on JAZZ.
// EisaBeginCriticalSection();
EisaOutUchar( EisaIoStart + EISA_RTC_CTRL, RtcIndex );
Value = READ_REGISTER_UCHAR( RTC_VIRTUAL_BASE );
// EisaEndCriticalSection();
return Value;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaOutUchar:
//
// DESCRIPTION: This function writes an uchar within the EISA I/O
// space and delays before returning.
//
// ARGUMENTS: Addr Address where the value has to be
// write to.
// Value Value to write
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
VOID
EisaOutUchar
(
IN PUCHAR Addr,
IN UCHAR Value
)
{
// PRINTDBG("EisaOutUchar\n\r"); // DEBUG SUPPORT
WRITE_REGISTER_UCHAR( Addr, Value );
EISA_IO_DELAY;
return;
}
// ----------------------------------------------------------------------------
// PROCEDURE: EisaInUchar:
//
// DESCRIPTION: This function reads an uchar from the EISA I/O
// space and delays before returning.
//
// ARGUMENTS: Addr Address where the value has to be
// read from.
//
// RETURN: none
//
// ASSUMPTIONS:
//
// CALLS:
//
// GLOBALS:
//
// NOTES:
//
// ----------------------------------------------------------------------------
//
UCHAR
EisaInUchar
(
IN PUCHAR Addr
)
{
UCHAR Value;
// PRINTDBG("EisaInUchar\n\r"); // DEBUG SUPPORT
Value = READ_REGISTER_UCHAR( Addr );
EISA_IO_DELAY;
return Value;
}
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