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/*-
* Copyright (c) 2014 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/cpuset.h>
#include <sys/systm.h>
#include <machine/vmm.h>
#include "vatpic.h"
#include "vatpit.h"
#include "vmm_ioport.h"
#define MAX_IOPORTS 1280
ioport_handler_func_t ioport_handler[MAX_IOPORTS] = {
[TIMER_MODE] = vatpit_handler,
[TIMER_CNTR0] = vatpit_handler,
[TIMER_CNTR1] = vatpit_handler,
[TIMER_CNTR2] = vatpit_handler,
[NMISC_PORT] = vatpit_nmisc_handler,
[IO_ICU1] = vatpic_master_handler,
[IO_ICU1 + ICU_IMR_OFFSET] = vatpic_master_handler,
[IO_ICU2] = vatpic_slave_handler,
[IO_ICU2 + ICU_IMR_OFFSET] = vatpic_slave_handler,
[IO_ELCR1] = vatpic_elc_handler,
[IO_ELCR2] = vatpic_elc_handler,
};
int
emulate_ioport(struct vm *vm, int vcpuid, struct vm_exit *vmexit)
{
ioport_handler_func_t handler;
uint32_t mask, val;
int error;
if (vmexit->u.inout.port >= MAX_IOPORTS)
return (-1);
handler = ioport_handler[vmexit->u.inout.port];
if (handler == NULL)
return (-1);
switch (vmexit->u.inout.bytes) {
case 1:
mask = 0xff;
break;
case 2:
mask = 0xffff;
break;
default:
mask = 0xffffffff;
break;
}
if (!vmexit->u.inout.in) {
val = vmexit->u.inout.eax & mask;
}
error = (*handler)(vm, vcpuid, vmexit->u.inout.in,
vmexit->u.inout.port, vmexit->u.inout.bytes, &val);
if (!error && vmexit->u.inout.in) {
vmexit->u.inout.eax &= ~mask;
vmexit->u.inout.eax |= val & mask;
}
return (error);
}
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