xboxdisk.c File Reference

#include <freeldr.h>
#include <hwide.h>
#include <debug.h>

Include dependency graph for xboxdisk.c:

Go to the source code of this file.

Functions
	DBG_DEFAULT_CHANNEL (DISK)
LONG	DiskReportError (BOOLEAN bShowError)
static VOID	DiskError (PCSTR ErrorString, ULONG ErrorCode)
static VOID	XboxDiskInit (VOID)
static PDEVICE_UNIT	XboxDiskDriveNumberToDeviceUnit (UCHAR DriveNumber)
BOOLEAN	DiskResetController (UCHAR DriveNumber)
CONFIGURATION_TYPE	DiskGetConfigType (_In_ UCHAR DriveNumber)
VOID __cdecl	DiskStopFloppyMotor (VOID)
BOOLEAN	XboxDiskReadLogicalSectors (IN UCHAR DriveNumber, IN ULONGLONG SectorNumber, IN ULONG SectorCount, OUT PVOID Buffer)
BOOLEAN	XboxDiskGetDriveGeometry (UCHAR DriveNumber, PGEOMETRY Geometry)
ULONG	XboxDiskGetCacheableBlockCount (UCHAR DriveNumber)

Variables
static PDEVICE_UNIT	HardDrive = NULL
static PDEVICE_UNIT	CdDrive = NULL
static BOOLEAN	AtaInitialized = FALSE
static LONG	lReportError = 0

Function Documentation

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

DISK

)

DiskError()

static VOID DiskError ( PCSTR  ErrorString, ULONG  ErrorCode  )

static

Definition at line 45 of file xboxdisk.c.

{
    CHAR ErrorCodeString[200];
 
    if (lReportError < 0)
        return;
 
#if 0 // TODO: ATA/IDE error code descriptions.
    sprintf(ErrorCodeString, "%s\n\nError Code: 0x%lx\nError: %s",
            ErrorString, ErrorCode, DiskGetErrorCodeString(ErrorCode));
#else
    UNREFERENCED_PARAMETER(ErrorCode);
    sprintf(ErrorCodeString, "%s", ErrorString);
#endif
 
    ERR("%s\n", ErrorCodeString);
    UiMessageBox(ErrorCodeString);
}

Referenced by XboxDiskReadLogicalSectors().

DiskGetConfigType()

CONFIGURATION_TYPE DiskGetConfigType

(

_In_ UCHAR

DriveNumber

)

Definition at line 129 of file xboxdisk.c.

{
    PDEVICE_UNIT DeviceUnit;
 
    DeviceUnit = XboxDiskDriveNumberToDeviceUnit(DriveNumber);
    if (!DeviceUnit)
        return -1; // MaximumType;
 
    if (DeviceUnit == CdDrive) // (DeviceUnit->Flags & ATA_DEVICE_ATAPI)
        return CdromController;
    else // if (DeviceUnit == HardDrive)
        return DiskPeripheral;
}

DiskReportError()

LONG DiskReportError

(

BOOLEAN

bShowError

)

Definition at line 27 of file xboxdisk.c.

{
    /* Set the reference count */
    if (bShowError) ++lReportError;
    else            --lReportError;
    return lReportError;
}

DiskResetController()

BOOLEAN DiskResetController

(

UCHAR

DriveNumber

)

Definition at line 121 of file xboxdisk.c.

{
    WARN("DiskResetController(0x%x) DISK OPERATION FAILED -- RESETTING CONTROLLER\n", DriveNumber);
    /* No-op on XBOX */
    return TRUE;
}

DiskStopFloppyMotor()

VOID __cdecl DiskStopFloppyMotor

(

VOID

)

Definition at line 145 of file xboxdisk.c.

{
    /* No-op on XBOX */
}

XboxDiskDriveNumberToDeviceUnit()

static PDEVICE_UNIT XboxDiskDriveNumberToDeviceUnit ( UCHAR  DriveNumber )

inlinestatic

Definition at line 101 of file xboxdisk.c.

{
    /* Xbox has only 1 IDE controller and no floppy */
    if (DriveNumber < 0x80 || (DriveNumber & 0x0F) >= 2)
        return NULL;
 
    if (!AtaInitialized)
        XboxDiskInit();
 
    /* HDD */
    if ((DriveNumber == 0x80) && HardDrive)
        return HardDrive;
 
    /* CD */
    if (((DriveNumber & 0xF0) > 0x80) && CdDrive)
        return CdDrive;
 
    return NULL;
}

Referenced by DiskGetConfigType(), XboxDiskGetCacheableBlockCount(), XboxDiskGetDriveGeometry(), and XboxDiskReadLogicalSectors().

XboxDiskGetCacheableBlockCount()

ULONG XboxDiskGetCacheableBlockCount

(

UCHAR

DriveNumber

)

Definition at line 194 of file xboxdisk.c.

{
    PDEVICE_UNIT DeviceUnit;
 
    DeviceUnit = XboxDiskDriveNumberToDeviceUnit(DriveNumber);
    if (!DeviceUnit)
        return 1; // Unknown count.
 
    /*
     * If LBA is supported then the block size will be 64 sectors (32k).
     * If not then the block size is the size of one track.
     */
    if (DeviceUnit->Flags & ATA_DEVICE_LBA)
        return 64;
    else
        return DeviceUnit->SectorsPerTrack;
}

Referenced by MachInit().

XboxDiskGetDriveGeometry()

BOOLEAN XboxDiskGetDriveGeometry	(	UCHAR	DriveNumber,
		PGEOMETRY	Geometry
	)

Definition at line 174 of file xboxdisk.c.

{
    PDEVICE_UNIT DeviceUnit;
 
    TRACE("XboxDiskGetDriveGeometry(0x%x)\n", DriveNumber);
 
    DeviceUnit = XboxDiskDriveNumberToDeviceUnit(DriveNumber);
    if (!DeviceUnit)
        return FALSE;
 
    Geometry->Cylinders = DeviceUnit->Cylinders;
    Geometry->Heads = DeviceUnit->Heads;
    Geometry->SectorsPerTrack = DeviceUnit->SectorsPerTrack;
    Geometry->BytesPerSector = DeviceUnit->SectorSize;
    Geometry->Sectors = DeviceUnit->TotalSectors;
 
    return TRUE;
}

Referenced by MachInit(), and XboxGetHarddiskConfigurationData().

XboxDiskInit()

static VOID XboxDiskInit ( VOID  )

static

Definition at line 68 of file xboxdisk.c.

{
    UCHAR DetectedCount;
    UCHAR UnitNumber;
    PDEVICE_UNIT DeviceUnit = NULL;
 
    ASSERT(!AtaInitialized);
 
    AtaInitialized = TRUE;
 
    /* Find first HDD and CD */
    AtaInit(&DetectedCount);
    for (UnitNumber = 0; UnitNumber <= DetectedCount; UnitNumber++)
    {
        DeviceUnit = AtaGetDevice(UnitNumber);
        if (DeviceUnit)
        {
            if (DeviceUnit->Flags & ATA_DEVICE_ATAPI)
            {
                if (!CdDrive)
                    CdDrive = DeviceUnit;
            }
            else
            {
                if (!HardDrive)
                    HardDrive = DeviceUnit;
            }
        }
    }
}

Referenced by XboxDiskDriveNumberToDeviceUnit().

XboxDiskReadLogicalSectors()

BOOLEAN XboxDiskReadLogicalSectors	(	IN UCHAR	DriveNumber,
		IN ULONGLONG	SectorNumber,
		IN ULONG	SectorCount,
		OUT PVOID	Buffer
	)

Definition at line 151 of file xboxdisk.c.

{
    PDEVICE_UNIT DeviceUnit;
    BOOLEAN Success;
 
    TRACE("XboxDiskReadLogicalSectors() DriveNumber: 0x%x SectorNumber: %I64u SectorCount: %u Buffer: 0x%x\n",
          DriveNumber, SectorNumber, SectorCount, Buffer);
 
    DeviceUnit = XboxDiskDriveNumberToDeviceUnit(DriveNumber);
    if (!DeviceUnit)
        return FALSE;
 
    Success = AtaReadLogicalSectors(DeviceUnit, SectorNumber, SectorCount, Buffer);
    if (!Success)
        DiskError("Disk Read Failed", -1);
    return Success;
}

Referenced by MachInit().

Variable Documentation

AtaInitialized

BOOLEAN AtaInitialized = FALSE

static

Definition at line 21 of file xboxdisk.c.

Referenced by XboxDiskDriveNumberToDeviceUnit(), and XboxDiskInit().

CdDrive

PDEVICE_UNIT CdDrive = NULL

static

Definition at line 20 of file xboxdisk.c.

Referenced by DiskGetConfigType(), XboxDiskDriveNumberToDeviceUnit(), and XboxDiskInit().

HardDrive

PDEVICE_UNIT HardDrive = NULL

static

Definition at line 19 of file xboxdisk.c.

Referenced by XboxDiskDriveNumberToDeviceUnit(), and XboxDiskInit().

lReportError

LONG lReportError = 0

static

Definition at line 25 of file xboxdisk.c.

Referenced by DiskError(), and DiskReportError().