ppbus_dma_malloc
if(ppbus_dma_malloc(parent, &(sc->sc_inbuf),
if(ppbus_dma_malloc(parent, &(sc->sc_outbuf),
return (ppbus->ppbus_dma_malloc(device_parent(dev), buf, addr,
int ppbus_dma_malloc(device_t, void **, bus_addr_t *, bus_size_t);
ppbus->ppbus_dma_malloc = sc_link->parport_dma_malloc;
PARPORT_DMA_MALLOC_T ppbus_dma_malloc;