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 #ifndef _INOUT_H_ 32 #define _INOUT_H_ 33 34 #include <sys/linker_set.h> 35 36 struct vmctx; 37 struct vm_exit; 38 39 /* 40 * inout emulation handlers return 0 on success and -1 on failure. 41 */ 42 typedef int (*inout_func_t)(struct vmctx *ctx, int vcpu, int in, int port, 43 int bytes, uint32_t *eax, void *arg); 44 45 struct inout_port { 46 const char *name; 47 int port; 48 int size; 49 int flags; 50 inout_func_t handler; 51 void *arg; 52 }; 53 #define IOPORT_F_IN 0x1 54 #define IOPORT_F_OUT 0x2 55 #define IOPORT_F_INOUT (IOPORT_F_IN | IOPORT_F_OUT) 56 57 /* 58 * The following flags are used internally and must not be used by 59 * device models. 60 */ 61 #define IOPORT_F_DEFAULT 0x80000000 /* claimed by default handler */ 62 63 #define INOUT_PORT(name, port, flags, handler) \ 64 static struct inout_port __CONCAT(__inout_port, __LINE__) = { \ 65 #name, \ 66 (port), \ 67 1, \ 68 (flags), \ 69 (handler), \ 70 0 \ 71 }; \ 72 DATA_SET(inout_port_set, __CONCAT(__inout_port, __LINE__)) 73 74 void init_inout(void); 75 int emulate_inout(struct vmctx *, int vcpu, struct vm_exit *vmexit, 76 int strict); 77 int register_inout(struct inout_port *iop); 78 int unregister_inout(struct inout_port *iop); 79 void init_bvmcons(void); 80 81 #endif /* _INOUT_H_ */ 82