/// <summary>
/// Destroys the MSD disk device.
/// </summary>
public void Destroy()
{
DeviceManager.Devices.Remove(this);
msd = null;
}
/// <summary>
/// Initialises a new disk device interface for the specified MSD.
/// Also determines the device's maximum size.
/// </summary>
/// <param name="anMSD">The MSD to create an interface for.</param>
public MassStorageDevice_DiskDevice(MassStorageDevice anMSD)
{
msd = anMSD;
uint* capacityBuffer = (uint*)FOS_System.Heap.AllocZeroed(8, "MassStorageDevice : MassStorageDevice_DiskDevice()");
try
{
//Send SCSI Read Capacity (10) command
anMSD.SendSCSICommand_IN(0x25, 0, 8, capacityBuffer, null);
// MSB ... LSB converted to LSB...MSB
// i.e. big-endian converted to little endian
capacityBuffer[0] = Utils.htonl(capacityBuffer[0]);
capacityBuffer[1] = Utils.htonl(capacityBuffer[1]);
// capacityBuffer[0] = Last LBA i.e. last addressable LBA
// So the count of blocks is Last LBA + 1
blockCount = ((ulong)capacityBuffer[0]) + 1;
// capacityBuffer[1] = Block size
blockSize = (ulong)capacityBuffer[1];
}
finally
{
FOS_System.Heap.Free(capacityBuffer);
}
DeviceManager.AddDevice(this);
}
