c1611aec98
change 0 means success and non-zero means failure. This also helps to eliminate VMEXIT_POWEROFF and VMEXIT_RESET as return values from VM-exit handlers. CR: D480 Reviewed by: grehan, jhb
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*-
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* Copyright (c) 2014 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
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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 <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <machine/vmm.h>
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#include <vmmapi.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include "inout.h"
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#include "pci_lpc.h"
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#define KBD_DATA_PORT 0x60
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#define KBD_STS_CTL_PORT 0x64
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#define KBD_SYS_FLAG 0x4
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#define KBDC_RESET 0xfe
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static int
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atkbdc_data_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 (bytes != 1)
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return (-1);
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*eax = 0;
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return (0);
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}
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static int
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atkbdc_sts_ctl_handler(struct vmctx *ctx, int vcpu, int in, int port,
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int bytes, uint32_t *eax, void *arg)
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{
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int error, retval;
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if (bytes != 1)
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return (-1);
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retval = 0;
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if (in) {
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*eax = KBD_SYS_FLAG; /* system passed POST */
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} else {
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switch (*eax) {
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case KBDC_RESET: /* Pulse "reset" line. */
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error = vm_suspend(ctx, VM_SUSPEND_RESET);
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assert(error == 0 || errno == EALREADY);
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break;
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}
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}
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return (retval);
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}
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INOUT_PORT(atkdbc, KBD_DATA_PORT, IOPORT_F_INOUT, atkbdc_data_handler);
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SYSRES_IO(KBD_DATA_PORT, 1);
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INOUT_PORT(atkbdc, KBD_STS_CTL_PORT, IOPORT_F_INOUT,
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atkbdc_sts_ctl_handler);
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SYSRES_IO(KBD_STS_CTL_PORT, 1);
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