4dfaf1bc08
during Linux boot. Submitted by: tycho nightingale at pluribusnetworks com Reviewed by: neel
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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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 NETAPP, INC ``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 NETAPP, INC 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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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "inout.h"
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#define IO_ICU1 0x20
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#define IO_ICU2 0xA0
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#define ICU_IMR_OFFSET 1
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static int
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atpic_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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if (in) {
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if (port & ICU_IMR_OFFSET) {
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/* all interrupts masked */
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*eax = 0xff;
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} else {
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*eax = 0x00;
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}
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}
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/* Pretend all writes to the 8259 are alright */
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return (0);
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}
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INOUT_PORT(atpic, IO_ICU1, IOPORT_F_INOUT, atpic_handler);
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INOUT_PORT(atpic, IO_ICU1 + ICU_IMR_OFFSET, IOPORT_F_INOUT, atpic_handler);
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INOUT_PORT(atpic, IO_ICU2, IOPORT_F_INOUT, atpic_handler);
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INOUT_PORT(atpic, IO_ICU2 + ICU_IMR_OFFSET, IOPORT_F_INOUT, atpic_handler);
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