diff options
Diffstat (limited to 'usr.sbin/bhyve/uart_backend.h')
| -rw-r--r-- | usr.sbin/bhyve/uart_backend.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/uart_backend.h b/usr.sbin/bhyve/uart_backend.h new file mode 100644 index 000000000000..ecf785ffd893 --- /dev/null +++ b/usr.sbin/bhyve/uart_backend.h @@ -0,0 +1,56 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2012 NetApp, Inc. + * Copyright (c) 2013 Neel Natu <neel@freebsd.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _UART_BACKEND_H_ +#define _UART_BACKEND_H_ + +#include <stdbool.h> + +#include "mevent.h" + +struct uart_softc; +struct vm_snapshot_meta; + +void uart_rxfifo_drain(struct uart_softc *sc, bool loopback); +int uart_rxfifo_getchar(struct uart_softc *sc); +int uart_rxfifo_numchars(struct uart_softc *sc); +int uart_rxfifo_putchar(struct uart_softc *sc, uint8_t ch, bool loopback); +void uart_rxfifo_reset(struct uart_softc *sc, int size); +int uart_rxfifo_size(struct uart_softc *sc); +#ifdef BHYVE_SNAPSHOT +int uart_rxfifo_snapshot(struct uart_softc *sc, + struct vm_snapshot_meta *meta); +#endif + +struct uart_softc *uart_init(void); +int uart_tty_open(struct uart_softc *sc, const char *path, + void (*drain)(int, enum ev_type, void *), void *arg); +void uart_softc_lock(struct uart_softc *sc); +void uart_softc_unlock(struct uart_softc *sc); +#endif /* _UART_BACKEND_H_ */ |