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)
PCSTR	DiskGetErrorCodeString (_In_ 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

Function Documentation

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

DISK

)

DiskGetConfigType()

CONFIGURATION_TYPE DiskGetConfigType

(

_In_ UCHAR

DriveNumber

)

Definition at line 101 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;
}

DiskGetErrorCodeString()

PCSTR DiskGetErrorCodeString

(

_In_ ULONG

ErrorCode

)

Definition at line 27 of file xboxdisk.c.

{
#if 0 // TODO: ATA/IDE error code descriptions.
    switch (ErrorCode)
    {
    default: return "Unknown error code";
    }
#endif
    return NULL;
}

DiskResetController()

BOOLEAN DiskResetController

(

UCHAR

DriveNumber

)

Definition at line 93 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 117 of file xboxdisk.c.

{
    /* No-op on XBOX */
}

XboxDiskDriveNumberToDeviceUnit()

static PDEVICE_UNIT XboxDiskDriveNumberToDeviceUnit ( UCHAR  DriveNumber )

inlinestatic

Definition at line 73 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 166 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 146 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 43 of file xboxdisk.c.

{
    UCHAR DetectedCount, UnitNumber;
 
    ASSERT(!AtaInitialized);
    AtaInitialized = TRUE;
 
    /* Find first HDD and CD */
    AtaInit(&DetectedCount);
    for (UnitNumber = 0; UnitNumber < DetectedCount; UnitNumber++)
    {
        PDEVICE_UNIT DeviceUnit = AtaGetDevice(UnitNumber);
        if (!DeviceUnit)
            continue;
 
        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 123 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().