79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*-
|
|
* Copyright (c) 2018-2022 Intel Corporation.
|
|
*
|
|
* 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 <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "types.h"
|
|
#include "vmmapi.h"
|
|
#include "inout.h"
|
|
#include "mevent.h"
|
|
|
|
#define DEBUG_IO_BASE (0xf4)
|
|
#define DEBUG_IO_SIZE (1)
|
|
|
|
static int
|
|
debugexit_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
|
|
uint32_t *eax, void *arg)
|
|
{
|
|
if (in)
|
|
*eax = 0xFFFF;
|
|
else {
|
|
vm_suspend(ctx, VM_SUSPEND_POWEROFF);
|
|
mevent_notify();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
init_debugexit(void)
|
|
{
|
|
struct inout_port iop;
|
|
|
|
memset(&iop, 0, sizeof(struct inout_port));
|
|
iop.name = "debugexit";
|
|
iop.port = DEBUG_IO_BASE;
|
|
iop.size = DEBUG_IO_SIZE;
|
|
iop.flags = IOPORT_F_INOUT;
|
|
iop.handler = debugexit_handler;
|
|
|
|
register_inout(&iop);
|
|
}
|
|
|
|
void
|
|
deinit_debugexit(void)
|
|
{
|
|
struct inout_port iop;
|
|
|
|
memset(&iop, 0, sizeof(struct inout_port));
|
|
iop.name = "debugexit";
|
|
iop.port = DEBUG_IO_BASE;
|
|
iop.size = DEBUG_IO_SIZE;
|
|
|
|
unregister_inout(&iop);
|
|
}
|