arm/at91/uart_dev_at91usart.c

440 	struct at91_usart_softc *atsc;
442 	atsc = (struct at91_usart_softc *)sc;
445 		atsc->flags |= USE_RTS0_WORKAROUND;
456 		atsc->flags |= HAS_TIMEOUT;
467 	    NULL, &atsc->tx_tag);
470 	err = bus_dmamap_create(atsc->tx_tag, 0, &atsc->tx_map);
474 	if (atsc->flags & HAS_TIMEOUT) {
485 		    &atsc->rx_tag);
489 			err = bus_dmamem_alloc(atsc->rx_tag,
490 			    (void **)&atsc->ping_pong[i].buffer,
491 			    BUS_DMA_NOWAIT, &atsc->ping_pong[i].map);
494 			err = bus_dmamap_load(atsc->rx_tag,
495 			    atsc->ping_pong[i].map,
496 			    atsc->ping_pong[i].buffer, sc->sc_rxfifosz,
497 			    at91_getaddr, &atsc->ping_pong[i].pa, 0);
500 			bus_dmamap_sync(atsc->rx_tag, atsc->ping_pong[i].map,
503 		atsc->ping = &atsc->ping_pong[0];
504 		atsc->pong = &atsc->ping_pong[1];
518 	if (atsc->flags & HAS_TIMEOUT) {
519 		WR4(&sc->sc_bas, PDC_RPR, atsc->ping->pa);
521 		WR4(&sc->sc_bas, PDC_RNPR, atsc->pong->pa);
549 	struct at91_usart_softc *atsc;
553 	atsc = (struct at91_usart_softc *)sc;
555 	if (bus_dmamap_load(atsc->tx_tag, atsc->tx_map, sc->sc_txbuf,
560 	bus_dmamap_sync(atsc->tx_tag, atsc->tx_map, BUS_DMASYNC_PREWRITE);
579 	struct at91_usart_softc *atsc;
581 	atsc = (struct at91_usart_softc *)sc;
604 	if (atsc->flags & USE_RTS0_WORKAROUND) {
646 	struct at91_usart_softc *atsc;
652 	atsc = (struct at91_usart_softc *)sc;
665 		bus_dmamap_sync(atsc->tx_tag, atsc->tx_map,
667 		bus_dmamap_unload(atsc->tx_tag, atsc->tx_map);
682 	if (atsc->flags & HAS_TIMEOUT) {
691 			bus_dmamap_sync(atsc->rx_tag, atsc->ping->map,
694 				at91_rx_put(sc, atsc->ping->buffer[i]);
695 			bus_dmamap_sync(atsc->rx_tag, atsc->ping->map,
697 			WR4(&sc->sc_bas, PDC_RPR, atsc->ping->pa);
700 			bus_dmamap_sync(atsc->rx_tag, atsc->pong->map,
703 				at91_rx_put(sc, atsc->pong->buffer[i]);
705 			bus_dmamap_sync(atsc->rx_tag, atsc->pong->map,
707 			WR4(&sc->sc_bas, PDC_RNPR, atsc->pong->pa);
717 			bus_dmamap_sync(atsc->rx_tag, atsc->ping->map,
720 				at91_rx_put(sc, atsc->ping->buffer[i]);
721 			p = atsc->ping;
722 			atsc->ping = atsc->pong;
723 			atsc->pong = p;
724 			bus_dmamap_sync(atsc->rx_tag, atsc->pong->map,
726 			WR4(&sc->sc_bas, PDC_RNPR, atsc->pong->pa);
757 				WR4(&sc->sc_bas, PDC_RPR, atsc->pong->pa);
763 			bus_dmamap_sync(atsc->rx_tag, atsc->ping->map,
766 				at91_rx_put(sc, atsc->ping->buffer[i]);
767 			bus_dmamap_sync(atsc->rx_tag, atsc->ping->map,
769 			p = atsc->ping;
770 			atsc->ping = atsc->pong;
771 			atsc->pong = p;
772 			WR4(&sc->sc_bas, PDC_RNPR, atsc->pong->pa);