1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2011 NetApp, Inc. 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 * This file and its contents are supplied under the terms of the 32 * Common Development and Distribution License ("CDDL"), version 1.0. 33 * You may only use this file in accordance with the terms of version 34 * 1.0 of the CDDL. 35 * 36 * A full copy of the text of the CDDL should have accompanied this 37 * source. A copy of the CDDL is also available via the Internet at 38 * http://www.illumos.org/license/CDDL. 39 * 40 * Copyright 2014 Pluribus Networks Inc. 41 */ 42 43 #ifndef _INOUT_H_ 44 #define _INOUT_H_ 45 46 #include <sys/linker_set.h> 47 48 struct vmctx; 49 struct vm_exit; 50 51 /* 52 * inout emulation handlers return 0 on success and -1 on failure. 53 */ 54 typedef int (*inout_func_t)(struct vmctx *ctx, int vcpu, int in, int port, 55 int bytes, uint32_t *eax, void *arg); 56 57 struct inout_port { 58 const char *name; 59 int port; 60 int size; 61 int flags; 62 inout_func_t handler; 63 void *arg; 64 }; 65 #define IOPORT_F_IN 0x1 66 #define IOPORT_F_OUT 0x2 67 #define IOPORT_F_INOUT (IOPORT_F_IN | IOPORT_F_OUT) 68 69 /* 70 * The following flags are used internally and must not be used by 71 * device models. 72 */ 73 #define IOPORT_F_DEFAULT 0x80000000 /* claimed by default handler */ 74 75 #define INOUT_PORT(name, port, flags, handler) \ 76 static struct inout_port __CONCAT(__inout_port, __LINE__) = { \ 77 #name, \ 78 (port), \ 79 1, \ 80 (flags), \ 81 (handler), \ 82 0 \ 83 }; \ 84 DATA_SET(inout_port_set, __CONCAT(__inout_port, __LINE__)) 85 86 void init_inout(void); 87 int emulate_inout(struct vmctx *, int vcpu, struct vm_exit *vmexit, 88 int strict); 89 int register_inout(struct inout_port *iop); 90 int unregister_inout(struct inout_port *iop); 91 void init_bvmcons(void); 92 93 #endif /* _INOUT_H_ */ 94