xbdclose|xbdclose
xbddump|xbddump
xbdioctl|xbdioctl
xbdopen|xbdopen
xbdread|xbdread
xbdsize|xbdsize
xbdstrategy|xbdstrategy
xbdwrite|xbdwrite
xb_init_comms|xb_init_comms
xb_read|xb_read
xb_suspend_comms|xb_suspend_comms
xb_write|xb_write