OHCI_TD_ALIGN     405 dev/usb/ohci.c 			  OHCI_TD_ALIGN, &dma);
OHCI_TD_ALIGN      63 dev/usb/ohcivar.h #define OHCI_STD_SIZE ((sizeof (struct ohci_soft_td) + OHCI_TD_ALIGN - 1) / OHCI_TD_ALIGN * OHCI_TD_ALIGN)