2 * Copyright (c) 2014 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/types.h>
32 #include <sys/queue.h>
33 #include <sys/cpuset.h>
34 #include <sys/systm.h>
36 #include <machine/vmm.h>
40 #include "vmm_ioport.h"
42 #define MAX_IOPORTS 1280
44 ioport_handler_func_t ioport_handler[MAX_IOPORTS] = {
45 [TIMER_MODE] = vatpit_handler,
46 [TIMER_CNTR0] = vatpit_handler,
47 [TIMER_CNTR1] = vatpit_handler,
48 [TIMER_CNTR2] = vatpit_handler,
49 [NMISC_PORT] = vatpit_nmisc_handler,
50 [IO_ICU1] = vatpic_master_handler,
51 [IO_ICU1 + ICU_IMR_OFFSET] = vatpic_master_handler,
52 [IO_ICU2] = vatpic_slave_handler,
53 [IO_ICU2 + ICU_IMR_OFFSET] = vatpic_slave_handler,
54 [IO_ELCR1] = vatpic_elc_handler,
55 [IO_ELCR2] = vatpic_elc_handler,
59 emulate_ioport(struct vm *vm, int vcpuid, struct vm_exit *vmexit)
61 ioport_handler_func_t handler;
65 if (vmexit->u.inout.port >= MAX_IOPORTS)
68 handler = ioport_handler[vmexit->u.inout.port];
72 switch (vmexit->u.inout.bytes) {
84 if (!vmexit->u.inout.in) {
85 val = vmexit->u.inout.eax & mask;
88 error = (*handler)(vm, vcpuid, vmexit->u.inout.in,
89 vmexit->u.inout.port, vmexit->u.inout.bytes, &val);
91 if (!error && vmexit->u.inout.in) {
92 vmexit->u.inout.eax &= ~mask;
93 vmexit->u.inout.eax |= val & mask;