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

Include dependency graph for xboxdisk.c:

Functions
	DBG_DEFAULT_CHANNEL (DISK)

static VOID	XboxDiskInit (VOID)

static PDEVICE_UNIT	XboxDiskDriveNumberToDeviceUnit (UCHAR DriveNumber)

CONFIGURATION_TYPE	DiskGetConfigType (_In_ UCHAR DriveNumber)

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

Function Documentation

◆ DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL ( DISK )

◆ DiskGetConfigType()

CONFIGURATION_TYPE DiskGetConfigType ( _In_ UCHAR DriveNumber )

Definition at line 81 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;
}

◆ XboxDiskDriveNumberToDeviceUnit()

static PDEVICE_UNIT XboxDiskDriveNumberToDeviceUnit ( UCHAR DriveNumber )

inlinestatic

Definition at line 60 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 136 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 116 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 27 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 97 of file xboxdisk.c.

{
    PDEVICE_UNIT DeviceUnit;
 
    TRACE("XboxDiskReadLogicalSectors() DriveNumber: 0x%x SectorNumber: %I64u SectorCount: %u Buffer: 0x%x\n",
          DriveNumber, SectorNumber, SectorCount, Buffer);
 
    DeviceUnit = XboxDiskDriveNumberToDeviceUnit(DriveNumber);
    if (!DeviceUnit)
        return FALSE;
 
    return AtaReadLogicalSectors(DeviceUnit, SectorNumber, SectorCount, Buffer);
}