80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
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/*-
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* Copyright (c) 2018 Intel
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "types.h"
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#include "vmmapi.h"
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#include "inout.h"
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#include "mevent.h"
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#define DEBUG_IO_BASE (0xf4)
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#define DEBUG_IO_SIZE (1)
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static int
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debugexit_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
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uint32_t *eax, void *arg)
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{
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if (in)
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*eax = 0xFFFF;
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else {
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vm_suspend(ctx, VM_SUSPEND_POWEROFF);
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mevent_notify();
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}
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return 0;
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}
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void
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init_debugexit(void)
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{
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struct inout_port iop;
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memset(&iop, 0, sizeof(struct inout_port));
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iop.name = "debugexit";
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iop.port = DEBUG_IO_BASE;
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iop.size = DEBUG_IO_SIZE;
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iop.flags = IOPORT_F_INOUT;
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iop.handler = debugexit_handler;
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register_inout(&iop);
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}
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void
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deinit_debugexit(void)
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{
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struct inout_port iop;
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memset(&iop, 0, sizeof(struct inout_port));
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iop.name = "debugexit";
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iop.port = DEBUG_IO_BASE;
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iop.size = DEBUG_IO_SIZE;
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unregister_inout(&iop);
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}
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