userspace-api/ioctl/hdio.rst

23 	HDIO_DRIVE_TASK		execute task and special drive command
24 	HDIO_DRIVE_CMD		execute a special drive command
84 			if the device is not a disk drive or floppy drive,
92 		drive geometry is an abstraction which is actually subject
94 		are the "bios" values -- presumably the values the drive had
123 		ATA drive identity information.  For full description, see
132 		Returns information that was obtained when the drive was
134 		this ioctl does not re-probe the drive to update the
175 	  registers of the drive.  Requires ADMIN and RAWIO access
222 	  - ENOMSG	Device is not a disk drive.
227 			req_cmd == TASKFILE_MULTI_OUT and drive
229 	  - EIO		Drive failed the command.
246 	     if LBA48 addressing is enabled for the drive
264 	  drive, followed by an optional buffer to receive data from
265 	  the drive.
267 	  Command is passed to the disk drive via the ide_task_request_t
282 	    out_size		output (user->drive) buffer size, bytes
283 	    in_size		input (drive->user) buffer size, bytes
289 	    HOB_FEATURE		If the drive supports LBA48
290 	    HOB_NSECTOR		If the drive supports LBA48
291 	    HOB_SECTOR		If the drive supports LBA48
292 	    HOB_LCYL		If the drive supports LBA48
293 	    HOB_HCYL		If the drive supports LBA48
326 	  Taskfile registers are read back from the drive into
331 	    1. The drive fails the command (EIO).
342 	    HOB_FEATURE		If the drive supports LBA48
343 	    HOB_NSECTOR		If the drive supports LBA48
344 	    HOB_SECTOR		If the drive supports LBA48
345 	    HOB_LCYL		If the drive supports LBA48
346 	    HOB_HCYL		If the drive supports LBA48
394 	execute a special drive command
443 	  - EIO		Drive reports error
451 	  value for the drive.  Please refer to HDIO_DRIVE_TASKFILE
454 	  [2] If NSECTOR value is greater than zero and the drive sets
462 	  && NSECTOR >= XFER_SW_DMA_0 && the drive supports any DMA
464 	  drive accordingly.
469 	execute task and special drive command
512 	  - ENOMSG	Device is not a disk drive.
513 	  - EIO		Drive failed the command.
518 	  appropriate value for the drive is used.  All other bits