static int ucom_open(struct tty *tp) { struct ucom_softc *sc = tty_softc(tp); int error; mtx_assert(sc->sc_mtx, MA_OWNED); if (sc->sc_flag & UCOM_FLAG_GONE) { return (ENXIO); } if (sc->sc_flag & UCOM_FLAG_HL_READY) { /* already opened */ return (0); } DPRINTF("tp = %p\n", tp); if (sc->sc_callback->ucom_pre_open) { /* * give the lower layer a chance to disallow TTY open, for * example if the device is not present: */ error = (sc->sc_callback->ucom_pre_open) (sc); if (error) { return (error); } } sc->sc_flag |= UCOM_FLAG_HL_READY; /* Disable transfers */ sc->sc_flag &= ~UCOM_FLAG_GP_DATA; sc->sc_lsr = 0; sc->sc_msr = 0; sc->sc_mcr = 0; /* reset programmed line state */ sc->sc_pls_curr = 0; sc->sc_pls_set = 0; sc->sc_pls_clr = 0; ucom_queue_command(sc, ucom_cfg_open, NULL, &sc->sc_open_task[0].hdr, &sc->sc_open_task[1].hdr); /* Queue transfer enable command last */ ucom_queue_command(sc, ucom_cfg_start_transfers, NULL, &sc->sc_start_task[0].hdr, &sc->sc_start_task[1].hdr); ucom_modem(tp, SER_DTR | SER_RTS, 0); ucom_break(sc, 0); ucom_status_change(sc); return (0); }
static void ucom_close(struct tty *tp) { struct ucom_softc *sc = tty_softc(tp); UCOM_MTX_ASSERT(sc, MA_OWNED); DPRINTF("tp=%p\n", tp); if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { DPRINTF("tp=%p already closed\n", tp); return; } ucom_shutdown(sc); ucom_queue_command(sc, ucom_cfg_close, NULL, &sc->sc_close_task[0].hdr, &sc->sc_close_task[1].hdr); sc->sc_flag &= ~(UCOM_FLAG_HL_READY | UCOM_FLAG_RTS_IFLOW); if (sc->sc_callback->ucom_stop_read) { (sc->sc_callback->ucom_stop_read) (sc); } }
static int ucom_close(struct ucom_softc *sc) { #ifdef USB_DEBUG struct tty *tp = sc->sc_tty; #endif int error = 0; DPRINTF("tp=%p\n", tp); if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { DPRINTF("tp=%p already closed\n", tp); UCOM_MTX_UNLOCK(sc); return (error); } ucom_shutdown(sc); ucom_queue_command(sc, ucom_cfg_close, NULL, &sc->sc_close_task[0].hdr, &sc->sc_close_task[1].hdr); sc->sc_flag &= ~(UCOM_FLAG_HL_READY | UCOM_FLAG_RTS_IFLOW); if (sc->sc_callback->ucom_stop_read) { (sc->sc_callback->ucom_stop_read) (sc); } return (error); }
void ucom_status_change(struct ucom_softc *sc) { mtx_assert(sc->sc_mtx, MA_OWNED); if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { return; } DPRINTF("\n"); ucom_queue_command(sc, ucom_cfg_status_change, NULL, &sc->sc_status_task[0].hdr, &sc->sc_status_task[1].hdr); }
void ucom_status_change(struct ucom_softc *sc) { UCOM_MTX_ASSERT(sc, MA_OWNED); if (sc->sc_flag & UCOM_FLAG_CONSOLE) return; /* not supported */ if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { return; } DPRINTF("\n"); ucom_queue_command(sc, ucom_cfg_status_change, NULL, &sc->sc_status_task[0].hdr, &sc->sc_status_task[1].hdr); }
static void ucom_line_state(struct ucom_softc *sc, uint8_t set_bits, uint8_t clear_bits) { UCOM_MTX_ASSERT(sc, MA_OWNED); if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { return; } DPRINTF("on=0x%02x, off=0x%02x\n", set_bits, clear_bits); /* update current programmed line state */ sc->sc_pls_curr |= set_bits; sc->sc_pls_curr &= ~clear_bits; sc->sc_pls_set |= set_bits; sc->sc_pls_clr |= clear_bits; /* defer driver programming */ ucom_queue_command(sc, ucom_cfg_line_state, NULL, &sc->sc_line_state_task[0].hdr, &sc->sc_line_state_task[1].hdr); }
static int ucom_param(struct tty *tp, struct termios *t) { struct ucom_softc *sc = tty_softc(tp); uint8_t opened; int error; UCOM_MTX_ASSERT(sc, MA_OWNED); opened = 0; error = 0; if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { /* XXX the TTY layer should call "open()" first! */ /* * Not quite: Its ordering is partly backwards, but * some parameters must be set early in ttydev_open(), * possibly before calling ttydevsw_open(). */ error = ucom_open(tp); if (error) goto done; opened = 1; } DPRINTF("sc = %p\n", sc); /* Check requested parameters. */ if (t->c_ispeed && (t->c_ispeed != t->c_ospeed)) { /* XXX c_ospeed == 0 is perfectly valid. */ DPRINTF("mismatch ispeed and ospeed\n"); error = EINVAL; goto done; } t->c_ispeed = t->c_ospeed; if (sc->sc_callback->ucom_pre_param) { /* Let the lower layer verify the parameters */ error = (sc->sc_callback->ucom_pre_param) (sc, t); if (error) { DPRINTF("callback error = %d\n", error); goto done; } } /* Disable transfers */ sc->sc_flag &= ~UCOM_FLAG_GP_DATA; /* Queue baud rate programming command first */ ucom_queue_command(sc, ucom_cfg_param, t, &sc->sc_param_task[0].hdr, &sc->sc_param_task[1].hdr); /* Queue transfer enable command last */ ucom_queue_command(sc, ucom_cfg_start_transfers, NULL, &sc->sc_start_task[0].hdr, &sc->sc_start_task[1].hdr); if (t->c_cflag & CRTS_IFLOW) { sc->sc_flag |= UCOM_FLAG_RTS_IFLOW; } else if (sc->sc_flag & UCOM_FLAG_RTS_IFLOW) { sc->sc_flag &= ~UCOM_FLAG_RTS_IFLOW; ucom_modem(tp, SER_RTS, 0); } done: if (error) { if (opened) { ucom_close(tp); } } return (error); }
static int ucom_param(struct tty *tp, struct termios *t) { struct ucom_softc *sc = tty_softc(tp); uint8_t opened; int error; mtx_assert(sc->sc_mtx, MA_OWNED); opened = 0; error = 0; if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { /* XXX the TTY layer should call "open()" first! */ error = ucom_open(tp); if (error) { goto done; } opened = 1; } DPRINTF("sc = %p\n", sc); /* Check requested parameters. */ if (t->c_ospeed < 0) { DPRINTF("negative ospeed\n"); error = EINVAL; goto done; } if (t->c_ispeed && (t->c_ispeed != t->c_ospeed)) { DPRINTF("mismatch ispeed and ospeed\n"); error = EINVAL; goto done; } t->c_ispeed = t->c_ospeed; if (sc->sc_callback->ucom_pre_param) { /* Let the lower layer verify the parameters */ error = (sc->sc_callback->ucom_pre_param) (sc, t); if (error) { DPRINTF("callback error = %d\n", error); goto done; } } /* Disable transfers */ sc->sc_flag &= ~UCOM_FLAG_GP_DATA; /* Queue baud rate programming command first */ ucom_queue_command(sc, ucom_cfg_param, t, &sc->sc_param_task[0].hdr, &sc->sc_param_task[1].hdr); /* Queue transfer enable command last */ ucom_queue_command(sc, ucom_cfg_start_transfers, NULL, &sc->sc_start_task[0].hdr, &sc->sc_start_task[1].hdr); if (t->c_cflag & CRTS_IFLOW) { sc->sc_flag |= UCOM_FLAG_RTS_IFLOW; } else if (sc->sc_flag & UCOM_FLAG_RTS_IFLOW) { sc->sc_flag &= ~UCOM_FLAG_RTS_IFLOW; ucom_modem(tp, SER_RTS, 0); } done: if (error) { if (opened) { ucom_close(tp); } } return (error); }