1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013 Neel Natu <neel@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _UART_EMUL_H_ 32 #define _UART_EMUL_H_ 33 34 #define UART_IO_BAR_SIZE 8 35 36 struct uart_softc; 37 struct vm_snapshot_meta; 38 39 typedef void (*uart_intr_func_t)(void *arg); 40 struct uart_softc *uart_init(uart_intr_func_t intr_assert, 41 uart_intr_func_t intr_deassert, void *arg); 42 43 int uart_legacy_alloc(int unit, int *ioaddr, int *irq); 44 uint8_t uart_read(struct uart_softc *sc, int offset); 45 void uart_write(struct uart_softc *sc, int offset, uint8_t value); 46 int uart_set_backend(struct uart_softc *sc, const char *opt); 47 #ifdef BHYVE_SNAPSHOT 48 int uart_snapshot(struct uart_softc *sc, struct vm_snapshot_meta *meta); 49 #endif 50 #endif 51