pc98hw.c File Reference

#include <freeldr.h>
#include <cportlib/cportlib.h>
#include <drivers/pc98/pit.h>
#include <drivers/pc98/fdc.h>
#include <debug.h>

Include dependency graph for pc98hw.c:

Go to the source code of this file.

Macros
#define	MILLISEC   10
#define	PRECISION   8
#define	HZ   100

Functions
	DBG_DEFAULT_CHANNEL (HWDETECT)
PCHAR	GetHarddiskIdentifier (UCHAR DriveNumber)
static VOID	__StallExecutionProcessor (ULONG Loops)
VOID	StallExecutionProcessor (ULONG Microseconds)
static VOID	WaitFor8253Wraparound (VOID)
VOID	HalpCalibrateStallExecution (VOID)
static UCHAR	GetFloppyType (UCHAR FloppyNumber)
static VOID	DetectBiosFloppyPeripheral (PCONFIGURATION_COMPONENT_DATA ControllerKey)
static PCONFIGURATION_COMPONENT_DATA	DetectBiosFloppyController (PCONFIGURATION_COMPONENT_DATA BusKey)
static PCM_PARTIAL_RESOURCE_LIST	Pc98GetHarddiskConfigurationData (UCHAR DriveNumber, ULONG *pSize)
VOID	DetectBiosDisks (PCONFIGURATION_COMPONENT_DATA SystemKey, PCONFIGURATION_COMPONENT_DATA BusKey)
static VOID	DetectPointerPeripheral (PCONFIGURATION_COMPONENT_DATA ControllerKey)
static VOID	DetectPointerController (PCONFIGURATION_COMPONENT_DATA BusKey)
static VOID	DetectKeyboardPeripheral (PCONFIGURATION_COMPONENT_DATA ControllerKey)
static VOID	DetectKeyboardController (PCONFIGURATION_COMPONENT_DATA BusKey)
static VOID	DetectParallelPorts (PCONFIGURATION_COMPONENT_DATA BusKey)
static VOID	DetectSerialPorts (PCONFIGURATION_COMPONENT_DATA BusKey)
static VOID	DetectCBusBios (PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)
static VOID	DetectNesaBios (PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)
static VOID	DetectPnpBios (PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)
PCONFIGURATION_COMPONENT_DATA	Pc98HwDetect (_In_opt_ PCSTR Options)
UCHAR	Pc98GetFloppyCount (VOID)
VOID __cdecl	DiskStopFloppyMotor (VOID)
VOID	FrLdrCheckCpuCompatibility (VOID)

Variables
UCHAR	PcBiosDiskCount
BOOLEAN	HiResoMachine
GET_HARDDISK_CONFIG_DATA	GetHarddiskConfigurationData = NULL
static unsigned int	delay_count = 1

Macro Definition Documentation

HZ

#define HZ   100

Definition at line 29 of file pc98hw.c.

MILLISEC

#define MILLISEC   10

Definition at line 27 of file pc98hw.c.

PRECISION

#define PRECISION   8

Definition at line 28 of file pc98hw.c.

Function Documentation

__StallExecutionProcessor()

static VOID __StallExecutionProcessor ( ULONG  Loops )

static

Definition at line 39 of file pc98hw.c.

{
    register volatile unsigned int i;
    for (i = 0; i < Loops; i++);
}

Referenced by HalpCalibrateStallExecution(), and StallExecutionProcessor().

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

HWDETECT

)

DetectBiosDisks()

VOID DetectBiosDisks	(	PCONFIGURATION_COMPONENT_DATA	SystemKey,
		PCONFIGURATION_COMPONENT_DATA	BusKey
	)

Definition at line 368 of file pc98hw.c.

{
    PCONFIGURATION_COMPONENT_DATA ControllerKey, DiskKey;
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_INT13_DRIVE_PARAMETER Int13Drives;
    GEOMETRY Geometry;
    UCHAR DiskCount, DriveNumber;
    USHORT i;
    ULONG Size;
 
    /* The pre-enumeration of the BIOS disks was already done in InitializeBootDevices() */
    DiskCount = PcBiosDiskCount;
 
    /* Use the floppy disk controller as our controller */
    ControllerKey = DetectBiosFloppyController(BusKey);
    if (!ControllerKey)
    {
        ERR("Failed to detect BIOS disk controller\n");
        return;
    }
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[1]) +
           sizeof(CM_INT13_DRIVE_PARAMETER) * DiskCount;
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 1;
 
    PartialResourceList->PartialDescriptors[0].Type = CmResourceTypeDeviceSpecific;
    PartialResourceList->PartialDescriptors[0].ShareDisposition = 0;
    PartialResourceList->PartialDescriptors[0].Flags = 0;
    PartialResourceList->PartialDescriptors[0].u.DeviceSpecificData.DataSize =
        sizeof(CM_INT13_DRIVE_PARAMETER) * DiskCount;
 
    /* Get harddisk Int13 geometry data */
    Int13Drives = (PCM_INT13_DRIVE_PARAMETER)&PartialResourceList->PartialDescriptors[1];
    for (i = 0; i < DiskCount; i++)
    {
        DriveNumber = 0x80 + i;
 
        if (Pc98DiskGetDriveGeometry(DriveNumber, &Geometry))
        {
            Int13Drives[i].DriveSelect = DriveNumber;
            Int13Drives[i].MaxCylinders = Geometry.Cylinders - 1;
            Int13Drives[i].SectorsPerTrack = (USHORT)Geometry.SectorsPerTrack;
            Int13Drives[i].MaxHeads = (USHORT)Geometry.Heads - 1;
            Int13Drives[i].NumberDrives = DiskCount;
 
            TRACE("Disk %x: %u Cylinders  %u Heads  %u Sectors  %u Bytes\n",
                  DriveNumber,
                  Geometry.Cylinders - 1,
                  Geometry.Heads - 1,
                  Geometry.SectorsPerTrack,
                  Geometry.BytesPerSector);
        }
    }
 
    /* Update the 'System' key's configuration data with BIOS INT13h information */
    FldrSetConfigurationData(SystemKey, PartialResourceList, Size);
 
    /* Create and fill subkey for each harddisk */
    for (i = 0; i < DiskCount; i++)
    {
        PCSTR Identifier;
 
        DriveNumber = 0x80 + i;
 
        /* Get disk values */
        PartialResourceList = GetHarddiskConfigurationData(DriveNumber, &Size);
        Identifier = GetHarddiskIdentifier(DriveNumber);
 
        /* Create disk key */
        FldrCreateComponentKey(ControllerKey,
                               PeripheralClass,
                               DiskPeripheral,
                               Output | Input,
                               i,
                               0xFFFFFFFF,
                               Identifier,
                               PartialResourceList,
                               Size,
                               &DiskKey);
    }
}

Referenced by DetectCBusBios().

DetectBiosFloppyController()

static PCONFIGURATION_COMPONENT_DATA DetectBiosFloppyController ( PCONFIGURATION_COMPONENT_DATA  BusKey )

static

Definition at line 226 of file pc98hw.c.

{
    PCONFIGURATION_COMPONENT_DATA ControllerKey;
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
    ULONG Size;
    ULONG FloppyCount;
    UCHAR i;
    UCHAR Index = 0;
 
    FloppyCount = Pc98GetFloppyCount();
 
    /* Always create a BIOS disk controller, no matter if we have floppy drives or not */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[7]);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return NULL;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 7;
 
    /* Set I/O ports */
    for (i = 0; i < 3; i++)
    {
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypePort;
        PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
        PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
        PartialDescriptor->u.Port.Start.LowPart = 0x90 + i * 2;
        PartialDescriptor->u.Port.Start.HighPart = 0;
        PartialDescriptor->u.Port.Length = 1;
    }
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypePort;
    PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
    PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
    PartialDescriptor->u.Port.Start.LowPart = 0xBE;
    PartialDescriptor->u.Port.Start.HighPart = 0;
    PartialDescriptor->u.Port.Length = 1;
 
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypePort;
    PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
    PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
    PartialDescriptor->u.Port.Start.LowPart = 0x4BE;
    PartialDescriptor->u.Port.Start.HighPart = 0;
    PartialDescriptor->u.Port.Length = 1;
 
    /* Set Interrupt */
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypeInterrupt;
    PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
    PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED;
    PartialDescriptor->u.Interrupt.Level = 11;
    PartialDescriptor->u.Interrupt.Vector = 11;
    PartialDescriptor->u.Interrupt.Affinity = 0xFFFFFFFF;
 
    /* Set DMA channel */
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypeDma;
    PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
    PartialDescriptor->Flags = 0;
    PartialDescriptor->u.Dma.Channel = 2;
    PartialDescriptor->u.Dma.Port = 0;
 
    /* Create floppy disk controller */
    FldrCreateComponentKey(BusKey,
                           ControllerClass,
                           DiskController,
                           Output | Input,
                           0,
                           0xFFFFFFFF,
                           NULL,
                           PartialResourceList,
                           Size,
                           &ControllerKey);
 
    if (FloppyCount)
        DetectBiosFloppyPeripheral(ControllerKey);
 
    return ControllerKey;
}

Referenced by DetectBiosDisks().

DetectBiosFloppyPeripheral()

static VOID DetectBiosFloppyPeripheral ( PCONFIGURATION_COMPONENT_DATA  ControllerKey )

static

Definition at line 150 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
    PCM_FLOPPY_DEVICE_DATA FloppyData;
    CHAR Identifier[20];
    PCONFIGURATION_COMPONENT_DATA PeripheralKey;
    ULONG Size;
    UCHAR FloppyNumber;
    UCHAR FloppyType;
    ULONG MaxDensity[6] = {0, 360, 1200, 720, 1440, 2880};
 
    for (FloppyNumber = 0; FloppyNumber < Pc98GetFloppyCount(); FloppyNumber++)
    {
        FloppyType = GetFloppyType(FloppyNumber);
 
        if ((FloppyType > 5) || (FloppyType == 0))
            continue;
 
        /* TODO: Properly detect */
 
        RtlStringCbPrintfA(Identifier, sizeof(Identifier), "FLOPPY%d", FloppyNumber + 1);
 
        /* Set 'Configuration Data' value */
        Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[1]) + sizeof(*FloppyData);
        PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
        if (PartialResourceList == NULL)
        {
            ERR("Failed to allocate resource descriptor! Ignoring remaining floppy peripherals. (FloppyNumber = %u, FloppyCount = %u)\n",
                FloppyNumber, Pc98GetFloppyCount());
            return;
        }
        RtlZeroMemory(PartialResourceList, Size);
        PartialResourceList->Version = 1;
        PartialResourceList->Revision = 1;
        PartialResourceList->Count = 1;
 
        PartialDescriptor = &PartialResourceList->PartialDescriptors[0];
        PartialDescriptor->Type = CmResourceTypeDeviceSpecific;
        PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
        PartialDescriptor->u.DeviceSpecificData.DataSize = sizeof(*FloppyData);
 
        /* FIXME: Don't use default parameters for 1.44 MB floppy */
        FloppyData = (PCM_FLOPPY_DEVICE_DATA)(PartialDescriptor + 1);
        FloppyData->Version = 2;
        FloppyData->Revision = 0;
        FloppyData->MaxDensity = MaxDensity[FloppyType];
        FloppyData->MountDensity = 0;
        FloppyData->StepRateHeadUnloadTime = 175;
        FloppyData->HeadLoadTime = 2;
        FloppyData->MotorOffTime = 37;
        FloppyData->SectorLengthCode = 2;
        FloppyData->SectorPerTrack = 18;
        FloppyData->ReadWriteGapLength = 27;
        FloppyData->DataTransferLength = 255;
        FloppyData->FormatGapLength = 108;
        FloppyData->FormatFillCharacter = 0xF6;
        FloppyData->HeadSettleTime = 15;
        FloppyData->MotorSettleTime = 8;
        FloppyData->MaximumTrackValue = (FloppyType == 1) ? 39 : 79;
        FloppyData->DataTransferRate = 0;
 
        FldrCreateComponentKey(ControllerKey,
                               PeripheralClass,
                               FloppyDiskPeripheral,
                               Input | Output,
                               FloppyNumber,
                               0xFFFFFFFF,
                               Identifier,
                               PartialResourceList,
                               Size,
                               &PeripheralKey);
    }
}

Referenced by DetectBiosFloppyController().

DetectCBusBios()

static VOID DetectCBusBios ( PCONFIGURATION_COMPONENT_DATA  SystemKey, ULONG *  BusNumber  )

static

Definition at line 951 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCONFIGURATION_COMPONENT_DATA BusKey;
    ULONG Size;
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 0;
 
    /* Create bus key */
    FldrCreateComponentKey(SystemKey,
                           AdapterClass,
                           MultiFunctionAdapter,
                           0,
                           0,
                           0xFFFFFFFF,
                           "ISA",
                           PartialResourceList,
                           Size,
                           &BusKey);
 
    /* Increment bus number */
    (*BusNumber)++;
 
    /* Detect C-bus/BIOS devices */
    DetectBiosDisks(SystemKey, BusKey);
    DetectSerialPorts(BusKey);
    DetectParallelPorts(BusKey);
    DetectKeyboardController(BusKey);
    DetectPointerController(BusKey);
 
    /* FIXME: Detect more C-bus devices */
}

Referenced by Pc98HwDetect().

DetectKeyboardController()

static VOID DetectKeyboardController ( PCONFIGURATION_COMPONENT_DATA  BusKey )

static

Definition at line 646 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
    PCONFIGURATION_COMPONENT_DATA ControllerKey;
    ULONG Size;
    UCHAR i;
 
    if (!CpDoesPortExist((PUCHAR)0x41))
        return;
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[3]);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 3;
 
    /* Set I/O ports */
    for (i = 0; i < 2; i++)
    {
        PartialDescriptor = &PartialResourceList->PartialDescriptors[i];
        PartialDescriptor->Type = CmResourceTypePort;
        PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
        PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
        PartialDescriptor->u.Port.Start.LowPart = 0x41 + i * 2;
        PartialDescriptor->u.Port.Start.HighPart = 0;
        PartialDescriptor->u.Port.Length = 1;
    }
 
    /* Set Interrupt */
    PartialDescriptor = &PartialResourceList->PartialDescriptors[2];
    PartialDescriptor->Type = CmResourceTypeInterrupt;
    PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
    PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED;
    PartialDescriptor->u.Interrupt.Level = 1;
    PartialDescriptor->u.Interrupt.Vector = 1;
    PartialDescriptor->u.Interrupt.Affinity = 0xFFFFFFFF;
 
    /* Create controller key */
    FldrCreateComponentKey(BusKey,
                           ControllerClass,
                           KeyboardController,
                           Input | ConsoleIn,
                           0,
                           0xFFFFFFFF,
                           NULL,
                           PartialResourceList,
                           Size,
                           &ControllerKey);
 
    DetectKeyboardPeripheral(ControllerKey);
}

Referenced by DetectCBusBios().

DetectKeyboardPeripheral()

static VOID DetectKeyboardPeripheral ( PCONFIGURATION_COMPONENT_DATA  ControllerKey )

static

Definition at line 574 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
    PCM_KEYBOARD_DEVICE_DATA KeyboardData;
    PCONFIGURATION_COMPONENT_DATA PeripheralKey;
    PCSTR Identifier;
    ULONG Size;
    REGS Regs;
    UCHAR KeyboardType = ((*(PUCHAR)MEM_KEYB_TYPE & 0x40) >> 5) |
                         ((*(PUCHAR)MEM_KEYB_TYPE & 0x08) >> 3);
 
    /* TODO: Properly detect */
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[1]) + sizeof(*KeyboardData);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 1;
 
    PartialDescriptor = &PartialResourceList->PartialDescriptors[0];
    PartialDescriptor->Type = CmResourceTypeDeviceSpecific;
    PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
    PartialDescriptor->u.DeviceSpecificData.DataSize = sizeof(*KeyboardData);
 
    /* Int 18h AH=02h
     * KEYBOARD - GET SHIFT FLAGS
     *
     * Return:
     * AL - shift flags
     */
    Regs.b.ah = 0x02;
    Int386(0x18, &Regs, &Regs);
 
    KeyboardData = (PCM_KEYBOARD_DEVICE_DATA)(PartialDescriptor + 1);
    KeyboardData->Version = 1;
    KeyboardData->Revision = 1;
    KeyboardData->Type = 7;
    KeyboardData->Subtype = 1;
    KeyboardData->KeyboardFlags = (Regs.b.al & 0x08) |
                                  ((Regs.b.al & 0x02) << 6) |
                                  ((Regs.b.al & 0x10) << 2) |
                                  ((Regs.b.al & 0x01) << 1);
 
    if (KeyboardType == 0)
        Identifier = "PC98_NmodeKEY";
    else if (KeyboardType == 2)
        Identifier = "PC98_106KEY";
    else
        Identifier = "PC98_LaptopKEY";
 
    /* Create controller key */
    FldrCreateComponentKey(ControllerKey,
                           PeripheralClass,
                           KeyboardPeripheral,
                           Input | ConsoleIn,
                           0,
                           0xFFFFFFFF,
                           Identifier,
                           PartialResourceList,
                           Size,
                           &PeripheralKey);
}

Referenced by DetectKeyboardController().

DetectNesaBios()

static VOID DetectNesaBios ( PCONFIGURATION_COMPONENT_DATA  SystemKey, ULONG *  BusNumber  )

static

Definition at line 996 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCONFIGURATION_COMPONENT_DATA BusKey;
    ULONG Size;
 
    if (!((*(PUCHAR)MEM_BIOS_FLAG5) & NESA_BUS_FLAG))
        return;
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 0;
 
    /* Create bus key */
    FldrCreateComponentKey(SystemKey,
                           AdapterClass,
                           MultiFunctionAdapter,
                           0,
                           0,
                           0xFFFFFFFF,
                           "EISA",
                           PartialResourceList,
                           Size,
                           &BusKey);
 
    /* Increment bus number */
    (*BusNumber)++;
}

Referenced by Pc98HwDetect().

DetectParallelPorts()

static VOID DetectParallelPorts ( PCONFIGURATION_COMPONENT_DATA  BusKey )

static

Definition at line 707 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
    PCONFIGURATION_COMPONENT_DATA ControllerKey;
    ULONG Size;
    UCHAR i;
    UCHAR Index = 0;
 
    /* TODO: Properly detect */
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[8]);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 8;
 
    /* Set I/O ports */
    for (i = 0; i < 4; i++)
    {
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypePort;
        PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
        PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
        PartialDescriptor->u.Port.Start.LowPart = 0x40 + i * 2;
        PartialDescriptor->u.Port.Start.HighPart = 0;
        PartialDescriptor->u.Port.Length = 3;
    }
 
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypePort;
    PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
    PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
    PartialDescriptor->u.Port.Start.LowPart = 0x140;
    PartialDescriptor->u.Port.Start.HighPart = 0;
    PartialDescriptor->u.Port.Length = 3;
 
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypePort;
    PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
    PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
    PartialDescriptor->u.Port.Start.LowPart = 0x149;
    PartialDescriptor->u.Port.Start.HighPart = 0;
    PartialDescriptor->u.Port.Length = 1;
 
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypePort;
    PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
    PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
    PartialDescriptor->u.Port.Start.LowPart = 0x14B;
    PartialDescriptor->u.Port.Start.HighPart = 0;
    PartialDescriptor->u.Port.Length = 4;
 
    /* Set Interrupt */
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypeInterrupt;
    PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
    PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED;
    PartialDescriptor->u.Interrupt.Level = 14;
    PartialDescriptor->u.Interrupt.Vector = 14;
    PartialDescriptor->u.Interrupt.Affinity = 0xFFFFFFFF;
 
    /* Create controller key */
    FldrCreateComponentKey(BusKey,
                           ControllerClass,
                           ParallelController,
                           Output,
                           0,
                           0xFFFFFFFF,
                           "PARALLEL1",
                           PartialResourceList,
                           Size,
                           &ControllerKey);
}

Referenced by DetectCBusBios().

DetectPnpBios()

static VOID DetectPnpBios ( PCONFIGURATION_COMPONENT_DATA  SystemKey, ULONG *  BusNumber  )

static

Definition at line 1036 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PNP_BIOS_DEVICE_NODE DeviceNode;
    PCM_PNP_BIOS_INSTALLATION_CHECK InstData;
    PCONFIGURATION_COMPONENT_DATA BusKey;
    ULONG x;
    ULONG NodeSize = 0;
    ULONG NodeCount = 0;
    UCHAR NodeNumber;
    ULONG FoundNodeCount;
    int i;
    ULONG PnpBufferSize;
    ULONG PnpBufferSizeLimit;
    ULONG Size;
    char* Ptr;
 
    InstData = (PCM_PNP_BIOS_INSTALLATION_CHECK)PnpBiosSupported();
    if (InstData == NULL || strncmp((CHAR*)InstData->Signature, "$PnP", 4))
    {
        TRACE("PnP-BIOS not supported\n");
        return;
    }
 
    TRACE("PnP-BIOS supported\n");
    TRACE("Signature '%c%c%c%c'\n",
          InstData->Signature[0], InstData->Signature[1],
          InstData->Signature[2], InstData->Signature[3]);
 
    x = PnpBiosGetDeviceNodeCount(&NodeSize, &NodeCount);
    if (x == 0x82)
    {
        TRACE("PnP-BIOS function 'Get Number of System Device Nodes' not supported\n");
        return;
    }
 
    NodeCount &= 0xFF; // needed since some fscked up BIOSes return wrong info (e.g. Mac Virtual PC)
    // e.g. look: https://web.archive.org/web/20080329010332/http://my.execpc.com/~geezer/osd/pnp/pnp16.c
    if (x != 0 || NodeSize == 0 || NodeCount == 0)
    {
        ERR("PnP-BIOS failed to enumerate device nodes\n");
        return;
    }
    TRACE("MaxNodeSize %u  NodeCount %u\n", NodeSize, NodeCount);
    TRACE("Estimated buffer size %u\n", NodeSize * NodeCount);
 
    /* Set 'Configuration Data' value */
    PnpBufferSizeLimit = sizeof(*InstData) + (NodeSize * NodeCount);
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[1]) + PnpBufferSizeLimit;
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
 
    /* Initialize resource descriptor */
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 1;
    PartialResourceList->PartialDescriptors[0].Type =
        CmResourceTypeDeviceSpecific;
    PartialResourceList->PartialDescriptors[0].ShareDisposition =
        CmResourceShareUndetermined;
 
    /* Set installation check data */
    Ptr = (char*)&PartialResourceList->PartialDescriptors[1];
    RtlCopyMemory(Ptr, InstData, sizeof(*InstData));
    Ptr += sizeof(*InstData);
    PnpBufferSize = sizeof(*InstData);
 
    /* Copy device nodes */
    FoundNodeCount = 0;
    for (i = 0; i < 0xFF; i++)
    {
        NodeNumber = (UCHAR)i;
 
        x = PnpBiosGetDeviceNode(&NodeNumber, DiskReadBuffer);
        if (x == 0)
        {
            DeviceNode = (PCM_PNP_BIOS_DEVICE_NODE)DiskReadBuffer;
 
            TRACE("Node: %u  Size %u (0x%x)\n",
                  DeviceNode->Node,
                  DeviceNode->Size,
                  DeviceNode->Size);
 
            if (PnpBufferSize + DeviceNode->Size > PnpBufferSizeLimit)
            {
                ERR("Buffer too small! Ignoring remaining device nodes. (i = %d)\n", i);
                break;
            }
 
            RtlCopyMemory(Ptr, DeviceNode, DeviceNode->Size);
 
            Ptr += DeviceNode->Size;
            PnpBufferSize += DeviceNode->Size;
 
            FoundNodeCount++;
            if (FoundNodeCount >= NodeCount)
                break;
        }
    }
 
    /* Set real data size */
    PartialResourceList->PartialDescriptors[0].u.DeviceSpecificData.DataSize =
        PnpBufferSize;
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[1]) + PnpBufferSize;
 
    TRACE("Real buffer size: %u\n", PnpBufferSize);
    TRACE("Resource size: %u\n", Size);
 
    /* Create component key */
    FldrCreateComponentKey(SystemKey,
                           AdapterClass,
                           MultiFunctionAdapter,
                           0,
                           0,
                           0xFFFFFFFF,
                           "PNP BIOS",
                           PartialResourceList,
                           Size,
                           &BusKey);
 
    (*BusNumber)++;
}

Referenced by Pc98HwDetect().

DetectPointerController()

static VOID DetectPointerController ( PCONFIGURATION_COMPONENT_DATA  BusKey )

static

Definition at line 498 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
    PCONFIGURATION_COMPONENT_DATA ControllerKey;
    ULONG Size;
    UCHAR i;
    UCHAR Index = 0;
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[HiResoMachine ? 7 : 6]);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = (HiResoMachine ? 7 : 6);
 
    /* Set I/O ports */
    for (i = 0; i < 4; i++)
    {
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypePort;
        PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
        PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
        PartialDescriptor->u.Port.Start.LowPart = (HiResoMachine ? 0x61 : 0x7FD9) + i * 2;
        PartialDescriptor->u.Port.Start.HighPart = 0;
        PartialDescriptor->u.Port.Length = 1;
    }
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypePort;
    PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
    PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
    PartialDescriptor->u.Port.Start.LowPart = (HiResoMachine ? 0x869 : 0xBFDB);
    PartialDescriptor->u.Port.Start.HighPart = 0;
    PartialDescriptor->u.Port.Length = 1;
    if (HiResoMachine)
    {
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypePort;
        PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
        PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
        PartialDescriptor->u.Port.Start.LowPart = 0x98D7;
        PartialDescriptor->u.Port.Start.HighPart = 0;
        PartialDescriptor->u.Port.Length = 1;
    }
 
    /* Set Interrupt */
    PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
    PartialDescriptor->Type = CmResourceTypeInterrupt;
    PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
    PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED;
    PartialDescriptor->u.Interrupt.Level = 13;
    PartialDescriptor->u.Interrupt.Vector = 13;
    PartialDescriptor->u.Interrupt.Affinity = 0xFFFFFFFF;
 
    /* Create controller key */
    FldrCreateComponentKey(BusKey,
                           ControllerClass,
                           PointerController,
                           Input,
                           0,
                           0xFFFFFFFF,
                           NULL,
                           PartialResourceList,
                           Size,
                           &ControllerKey);
 
    DetectPointerPeripheral(ControllerKey);
}

Referenced by DetectCBusBios().

DetectPointerPeripheral()

static VOID DetectPointerPeripheral ( PCONFIGURATION_COMPONENT_DATA  ControllerKey )

static

Definition at line 463 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCONFIGURATION_COMPONENT_DATA PeripheralKey;
    ULONG Size;
 
    /* TODO: Properly detect */
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 0;
 
    /* Create 'PointerPeripheral' key */
    FldrCreateComponentKey(ControllerKey,
                           PeripheralClass,
                           PointerPeripheral,
                           Input,
                           0,
                           0xFFFFFFFF,
                           "NEC PC-9800 BUS MOUSE",
                           PartialResourceList,
                           Size,
                           &PeripheralKey);
}

Referenced by DetectPointerController().

DetectSerialPorts()

static VOID DetectSerialPorts ( PCONFIGURATION_COMPONENT_DATA  BusKey )

static

Definition at line 790 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
    PCM_SERIAL_DEVICE_DATA SerialDeviceData;
    PCONFIGURATION_COMPONENT_DATA ControllerKey;
    CHAR Identifier[80];
    ULONG Size;
    UCHAR Index;
    ULONG ControllerNumber = 0;
 
    if (CpDoesPortExist((PUCHAR)0x30))
    {
        UCHAR FifoStatus;
        BOOLEAN HasFifo;
        UCHAR i;
 
        FifoStatus = READ_PORT_UCHAR((PUCHAR)0x136) & 0x40;
        StallExecutionProcessor(5);
        HasFifo = ((READ_PORT_UCHAR((PUCHAR)0x136) & 0x40) != FifoStatus);
 
        RtlStringCbPrintfA(Identifier, sizeof(Identifier), "COM%d", ControllerNumber + 1);
 
        /* Set 'Configuration Data' value */
        Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[HasFifo ? 11 : 4]) +
               sizeof(*SerialDeviceData);
        PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
        if (PartialResourceList == NULL)
        {
            ERR("Failed to allocate resource descriptor\n");
            return;
        }
        RtlZeroMemory(PartialResourceList, Size);
        PartialResourceList->Version = 1;
        PartialResourceList->Revision = 1;
        PartialResourceList->Count = (HasFifo ? 11 : 4);
 
        Index = 0;
 
        /* Set I/O ports */
        for (i = 0; i < 2; i++)
        {
            PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
            PartialDescriptor->Type = CmResourceTypePort;
            PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
            PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
            PartialDescriptor->u.Port.Start.LowPart = 0x30 + i * 2;
            PartialDescriptor->u.Port.Start.HighPart = 0;
            PartialDescriptor->u.Port.Length = 1;
        }
        if (HasFifo)
        {
            for (i = 0; i < 7; i++)
            {
                PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
                PartialDescriptor->Type = CmResourceTypePort;
                PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
                PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
                PartialDescriptor->u.Port.Start.LowPart = 0x130 + i * 2;
                PartialDescriptor->u.Port.Start.HighPart = 0;
                PartialDescriptor->u.Port.Length = 1;
            }
        }
 
        /* Set Interrupt */
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypeInterrupt;
        PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
        PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED;
        PartialDescriptor->u.Interrupt.Level = 4;
        PartialDescriptor->u.Interrupt.Vector = 4;
        PartialDescriptor->u.Interrupt.Affinity = 0xFFFFFFFF;
 
        /* Set serial data (device specific) */
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypeDeviceSpecific;
        PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
        PartialDescriptor->Flags = 0;
        PartialDescriptor->u.DeviceSpecificData.DataSize = sizeof(*SerialDeviceData);
 
        SerialDeviceData = (PCM_SERIAL_DEVICE_DATA)(PartialDescriptor + 1);
        SerialDeviceData->BaudClock = (*(PUCHAR)MEM_BIOS_FLAG1 & SYSTEM_CLOCK_8MHZ_FLAG) ?
                                       TIMER_FREQUENCY_1 : TIMER_FREQUENCY_2;
 
        /* Create controller key */
        FldrCreateComponentKey(BusKey,
                               ControllerClass,
                               SerialController,
                               Output | Input | ConsoleIn | ConsoleOut,
                               ControllerNumber,
                               0xFFFFFFFF,
                               Identifier,
                               PartialResourceList,
                               Size,
                               &ControllerKey);
        ++ControllerNumber;
    }
 
    if (CpDoesPortExist((PUCHAR)0x238))
    {
        RtlStringCbPrintfA(Identifier, sizeof(Identifier), "COM%d", ControllerNumber + 1);
 
        /* Set 'Configuration Data' value */
        Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[3]) + sizeof(*SerialDeviceData);
        PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
        if (PartialResourceList == NULL)
        {
            ERR("Failed to allocate resource descriptor\n");
            return;
        }
        RtlZeroMemory(PartialResourceList, Size);
        PartialResourceList->Version = 1;
        PartialResourceList->Revision = 1;
        PartialResourceList->Count = 3;
 
        Index = 0;
 
        /* Set I/O ports */
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypePort;
        PartialDescriptor->ShareDisposition = CmResourceShareDeviceExclusive;
        PartialDescriptor->Flags = CM_RESOURCE_PORT_IO;
        PartialDescriptor->u.Port.Start.LowPart = 0x238;
        PartialDescriptor->u.Port.Start.HighPart = 0;
        PartialDescriptor->u.Port.Length = 8;
 
        /* Set Interrupt */
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypeInterrupt;
        PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
        PartialDescriptor->Flags = CM_RESOURCE_INTERRUPT_LATCHED;
        PartialDescriptor->u.Interrupt.Level = 5;
        PartialDescriptor->u.Interrupt.Vector = 5;
        PartialDescriptor->u.Interrupt.Affinity = 0xFFFFFFFF;
 
        /* Set serial data (device specific) */
        PartialDescriptor = &PartialResourceList->PartialDescriptors[Index++];
        PartialDescriptor->Type = CmResourceTypeDeviceSpecific;
        PartialDescriptor->ShareDisposition = CmResourceShareUndetermined;
        PartialDescriptor->Flags = 0;
        PartialDescriptor->u.DeviceSpecificData.DataSize = sizeof(*SerialDeviceData);
 
        SerialDeviceData = (PCM_SERIAL_DEVICE_DATA)(PartialDescriptor + 1);
        SerialDeviceData->BaudClock = 1843200;
 
        /* Create controller key */
        FldrCreateComponentKey(BusKey,
                               ControllerClass,
                               SerialController,
                               Output | Input | ConsoleIn | ConsoleOut,
                               ControllerNumber,
                               0xFFFFFFFF,
                               Identifier,
                               PartialResourceList,
                               Size,
                               &ControllerKey);
        ++ControllerNumber;
    }
}

Referenced by DetectCBusBios().

DiskStopFloppyMotor()

VOID __cdecl DiskStopFloppyMotor

(

VOID

)

Definition at line 1217 of file pc98hw.c.

{
    WRITE_PORT_UCHAR((PUCHAR)(FDC1_IO_BASE + FDC_o_CONTROL), 0);
    WRITE_PORT_UCHAR((PUCHAR)(FDC2_IO_BASE + FDC_o_CONTROL), 0);
}

Referenced by Pc98PrepareForReactOS(), and PcPrepareForReactOS().

FrLdrCheckCpuCompatibility()

VOID FrLdrCheckCpuCompatibility

(

VOID

)

Definition at line 1225 of file pc98hw.c.

{
    INT CpuInformation[4] = {-1};
    ULONG NumberOfIds;
 
    /* Check if the processor first supports ID 1 */
    __cpuid(CpuInformation, 0);
 
    NumberOfIds = CpuInformation[0];
 
    if (NumberOfIds == 0)
    {
        FrLdrBugCheckWithMessage(MISSING_HARDWARE_REQUIREMENTS,
                                 __FILE__,
                                 __LINE__,
                                 "ReactOS requires the CPUID instruction to return "
                                 "more than one supported ID.\n\n");
    }
 
    /* NumberOfIds will be greater than 1 if the processor is new enough */
    if (NumberOfIds == 1)
    {
        INT ProcessorFamily;
 
        /* Get information */
        __cpuid(CpuInformation, 1);
 
        ProcessorFamily = (CpuInformation[0] >> 8) & 0xF;
 
        /* If it's Family 4 or lower, bugcheck */
        if (ProcessorFamily < 5)
        {
            FrLdrBugCheckWithMessage(MISSING_HARDWARE_REQUIREMENTS,
                                     __FILE__,
                                     __LINE__,
                                     "Processor is too old (family %u < 5)\n"
                                     "ReactOS requires a Pentium-level processor or newer.",
                                     ProcessorFamily);
        }
    }
}

GetFloppyType()

static UCHAR GetFloppyType ( UCHAR  FloppyNumber )

static

Definition at line 143 of file pc98hw.c.

{
    /* FIXME */
    return 5;
}

Referenced by DetectBiosFloppyPeripheral().

GetHarddiskIdentifier()

PCHAR GetHarddiskIdentifier

(

UCHAR

DriveNumber

)

Definition at line 254 of file hwdisk.c.

{
    return PcDiskIdentifier[DriveNumber - FIRST_BIOS_DISK];
}

Referenced by DetectBiosDisks().

HalpCalibrateStallExecution()

VOID HalpCalibrateStallExecution

(

VOID

)

Definition at line 70 of file pc98hw.c.

{
    ULONG i;
    ULONG calib_bit;
    ULONG CurCount;
    TIMER_CONTROL_PORT_REGISTER TimerControl;
    USHORT Count = (*(PUCHAR)MEM_BIOS_FLAG1 & SYSTEM_CLOCK_8MHZ_FLAG) ?
                    (TIMER_FREQUENCY_1 / HZ) : (TIMER_FREQUENCY_2 / HZ);
 
    /* Initialize timer interrupt with MILLISECOND ms interval */
    TimerControl.BcdMode = FALSE;
    TimerControl.OperatingMode = PitOperatingMode2;
    TimerControl.AccessMode = PitAccessModeLowHigh;
    TimerControl.Channel = PitChannel0;
    Write8253Timer(TimerControl, Count);
 
    /* Stage 1: Coarse calibration */
 
    delay_count = 1;
 
    do
    {
        /* Next delay count to try */
        delay_count <<= 1;
 
        WaitFor8253Wraparound();
 
        /* Do the delay */
        __StallExecutionProcessor(delay_count);
 
        CurCount = Read8253Timer(PitChannel0);
    }
    while (CurCount > Count / 2);
 
    /* Get bottom value for delay */
    delay_count >>= 1;
 
    /* Stage 2: Fine calibration */
 
    /* Which bit are we going to test */
    calib_bit = delay_count;
 
    for (i = 0; i < PRECISION; i++)
    {
        /* Next bit to calibrate */
        calib_bit >>= 1;
 
        /* If we have done all bits, stop */
        if (!calib_bit)
            break;
 
        /* Set the bit in delay_count */
        delay_count |= calib_bit;
 
        WaitFor8253Wraparound();
 
        /* Do the delay */
        __StallExecutionProcessor(delay_count);
 
        CurCount = Read8253Timer(PitChannel0);
 
        /* If a tick has passed, turn the calibrated bit back off */
        if (CurCount <= Count / 2)
            delay_count &= ~calib_bit;
    }
 
    /* We're finished: Do the finishing touches */
 
    /* Calculate delay_count for 1ms */
    delay_count /= (MILLISEC / 2);
}

Pc98GetFloppyCount()

UCHAR Pc98GetFloppyCount

(

VOID

)

Definition at line 1196 of file pc98hw.c.

{
    USHORT DiskEquipment = *(PUSHORT)MEM_DISK_EQUIP & ~(*(PUCHAR)MEM_RDISK_EQUIP);
    UCHAR DiskMask;
    UCHAR FloppyCount = 0;
 
    for (DiskMask = 0x01; DiskMask != 0; DiskMask <<= 1)
    {
        if (FIRSTBYTE(DiskEquipment) & DiskMask)
            ++FloppyCount;
    }
 
    for (DiskMask = 0x10; DiskMask != 0; DiskMask <<= 1)
    {
        if (SECONDBYTE(DiskEquipment) & DiskMask)
            ++FloppyCount;
    }
 
    return FloppyCount;
}

Referenced by DetectBiosFloppyController(), DetectBiosFloppyPeripheral(), and MachInit().

Pc98GetHarddiskConfigurationData()

static PCM_PARTIAL_RESOURCE_LIST Pc98GetHarddiskConfigurationData ( UCHAR  DriveNumber, ULONG *  pSize  )

static

Definition at line 314 of file pc98hw.c.

{
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    PCM_DISK_GEOMETRY_DEVICE_DATA DiskGeometry;
    GEOMETRY Geometry;
    ULONG Size;
 
    *pSize = 0;
 
    /* Set 'Configuration Data' value */
    Size = FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors[1]) + sizeof(*DiskGeometry);
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return NULL;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 1;
    PartialResourceList->Revision = 1;
    PartialResourceList->Count = 1;
    PartialResourceList->PartialDescriptors[0].Type = CmResourceTypeDeviceSpecific;
//  PartialResourceList->PartialDescriptors[0].ShareDisposition =
//  PartialResourceList->PartialDescriptors[0].Flags =
    PartialResourceList->PartialDescriptors[0].u.DeviceSpecificData.DataSize =
        sizeof(*DiskGeometry);
 
    /* Get the disk geometry. Extended geometry isn't supported by hardware. */
    DiskGeometry = (PCM_DISK_GEOMETRY_DEVICE_DATA)&PartialResourceList->PartialDescriptors[1];
    if (Pc98DiskGetDriveGeometry(DriveNumber, &Geometry))
    {
        DiskGeometry->BytesPerSector = Geometry.BytesPerSector;
        DiskGeometry->NumberOfCylinders = Geometry.Cylinders;
        DiskGeometry->SectorsPerTrack = Geometry.SectorsPerTrack;
        DiskGeometry->NumberOfHeads = Geometry.Heads;
    }
    else
    {
        TRACE("Reading disk geometry failed\n");
        FrLdrHeapFree(PartialResourceList, TAG_HW_RESOURCE_LIST);
        return NULL;
    }
    TRACE("Disk %x: %u Cylinders  %u Heads  %u Sectors  %u Bytes\n",
          DriveNumber,
          DiskGeometry->NumberOfCylinders,
          DiskGeometry->NumberOfHeads,
          DiskGeometry->SectorsPerTrack,
          DiskGeometry->BytesPerSector);
 
    *pSize = Size;
    return PartialResourceList;
}

Referenced by Pc98HwDetect().

Pc98HwDetect()

PCONFIGURATION_COMPONENT_DATA Pc98HwDetect

(

_In_opt_ PCSTR

Options

)

Definition at line 1165 of file pc98hw.c.

{
    PCONFIGURATION_COMPONENT_DATA SystemKey;
    ULONG BusNumber = 0;
 
    TRACE("DetectHardware()\n");
 
    /* Create the 'System' key */
    FldrCreateSystemKey(&SystemKey, "NEC PC-98");
 
    GetHarddiskConfigurationData = Pc98GetHarddiskConfigurationData;
    FindPciBios = PcFindPciBios;
 
    /* Detect buses */
    DetectPciBios(SystemKey, &BusNumber);
    DetectApmBios(SystemKey, &BusNumber);
    DetectPnpBios(SystemKey, &BusNumber);
    DetectNesaBios(SystemKey, &BusNumber);
    DetectCBusBios(SystemKey, &BusNumber);
    DetectAcpiBios(SystemKey, &BusNumber);
    // TODO: Detect more buses
 
    // TODO: Collect the ROM blocks and append their
    // CM_ROM_BLOCK data into the 'System' key's configuration data.
 
    TRACE("DetectHardware() Done\n");
    return SystemKey;
}

Referenced by MachInit().

StallExecutionProcessor()

VOID StallExecutionProcessor

(

ULONG

Microseconds

)

Definition at line 45 of file pc98hw.c.

{
    ULONGLONG LoopCount = ((ULONGLONG)delay_count * (ULONGLONG)Microseconds) / 1000ULL;
    __StallExecutionProcessor((ULONG)LoopCount);
}

Referenced by DetectSerialPorts().

WaitFor8253Wraparound()

static VOID WaitFor8253Wraparound ( VOID  )

static

Definition at line 52 of file pc98hw.c.

{
    ULONG CurrentCount;
    ULONG PreviousCount = ~0;
    LONG Delta;
 
    CurrentCount = Read8253Timer(PitChannel0);
 
    do
    {
        PreviousCount = CurrentCount;
        CurrentCount = Read8253Timer(PitChannel0);
        Delta = CurrentCount - PreviousCount;
    }
    while (Delta < 300);
}

Referenced by HalpCalibrateStallExecution().

Variable Documentation

delay_count

unsigned int delay_count = 1

static

Definition at line 31 of file pc98hw.c.

Referenced by HalpCalibrateStallExecution(), and StallExecutionProcessor().

GetHarddiskConfigurationData

GET_HARDDISK_CONFIG_DATA GetHarddiskConfigurationData = NULL

Definition at line 23 of file pc98hw.c.

Referenced by DetectBiosDisks(), and Pc98HwDetect().

HiResoMachine

BOOLEAN HiResoMachine

extern

Definition at line 17 of file machpc98.c.

Referenced by DetectPointerController().

PcBiosDiskCount

UCHAR PcBiosDiskCount

extern

Definition at line 47 of file hwdisk.c.

Referenced by DetectBiosDisks().