1 /*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _INOUT_H_ 30 #define _INOUT_H_ 31 32 #include <sys/linker_set.h> 33 34 struct vmctx; 35 struct vm_exit; 36 37 /* 38 * inout emulation handlers return 0 on success and -1 on failure. 39 */ 40 typedef int (*inout_func_t)(struct vmctx *ctx, int vcpu, int in, int port, 41 int bytes, uint32_t *eax, void *arg); 42 43 struct inout_port { 44 const char *name; 45 int port; 46 int size; 47 int flags; 48 inout_func_t handler; 49 void *arg; 50 }; 51 #define IOPORT_F_IN 0x1 52 #define IOPORT_F_OUT 0x2 53 #define IOPORT_F_INOUT (IOPORT_F_IN | IOPORT_F_OUT) 54 55 /* 56 * The following flags are used internally and must not be used by 57 * device models. 58 */ 59 #define IOPORT_F_DEFAULT 0x80000000 /* claimed by default handler */ 60 61 #define INOUT_PORT(name, port, flags, handler) \ 62 static struct inout_port __CONCAT(__inout_port, __LINE__) = { \ 63 #name, \ 64 (port), \ 65 1, \ 66 (flags), \ 67 (handler), \ 68 0 \ 69 }; \ 70 DATA_SET(inout_port_set, __CONCAT(__inout_port, __LINE__)) 71 72 void init_inout(void); 73 int emulate_inout(struct vmctx *, int vcpu, struct vm_exit *vmexit, 74 int strict); 75 int register_inout(struct inout_port *iop); 76 int unregister_inout(struct inout_port *iop); 77 void init_bvmcons(void); 78 79 #endif /* _INOUT_H_ */ 80