diff options
Diffstat (limited to 'sys/dev/uart/uart_dev_quicc.c')
| -rw-r--r-- | sys/dev/uart/uart_dev_quicc.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sys/dev/uart/uart_dev_quicc.c b/sys/dev/uart/uart_dev_quicc.c index 337591e..bbbc3bd 100644 --- a/sys/dev/uart/uart_dev_quicc.c +++ b/sys/dev/uart/uart_dev_quicc.c @@ -245,6 +245,8 @@ static int quicc_bus_probe(struct uart_softc *); static int quicc_bus_receive(struct uart_softc *); static int quicc_bus_setsig(struct uart_softc *, int); static int quicc_bus_transmit(struct uart_softc *); +static void quicc_bus_grab(struct uart_softc *); +static void quicc_bus_ungrab(struct uart_softc *); static kobj_method_t quicc_methods[] = { KOBJMETHOD(uart_attach, quicc_bus_attach), @@ -258,6 +260,8 @@ static kobj_method_t quicc_methods[] = { KOBJMETHOD(uart_receive, quicc_bus_receive), KOBJMETHOD(uart_setsig, quicc_bus_setsig), KOBJMETHOD(uart_transmit, quicc_bus_transmit), + KOBJMETHOD(uart_grab, quicc_bus_grab), + KOBJMETHOD(uart_ungrab, quicc_bus_ungrab), { 0, 0 } }; @@ -485,3 +489,34 @@ quicc_bus_transmit(struct uart_softc *sc) uart_unlock(sc->sc_hwmtx); return (0); } + +static void +quicc_bus_grab(struct uart_softc *sc) +{ + struct uart_bas *bas; + uint16_t st, rb; + + /* Disable interrupts on the receive buffer. */ + bas = &sc->sc_bas; + uart_lock(sc->sc_hwmtx); + rb = quicc_read2(bas, QUICC_PRAM_SCC_RBASE(bas->chan - 1)); + st = quicc_read2(bas, rb); + quicc_write2(bas, rb, st & ~0x9000); + uart_unlock(sc->sc_hwmtx); +} + +static void +quicc_bus_ungrab(struct uart_softc *sc) +{ + struct uart_bas *bas; + uint16_t st, rb; + + /* Enable interrupts on the receive buffer. */ + bas = &sc->sc_bas; + uart_lock(sc->sc_hwmtx); + rb = quicc_read2(bas, QUICC_PRAM_SCC_RBASE(bas->chan - 1)); + st = quicc_read2(bas, rb); + quicc_write2(bas, rb, st | 0x9000); + uart_unlock(sc->sc_hwmtx); +} + |
