1/*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD$"); 31 32#include <sys/param.h> 33 34#include <stdio.h> 35#include <string.h> 36#include <assert.h> 37 38#include "inout.h" 39 40#define IO_ICU1 0x20 41#define IO_ICU2 0xA0 42#define ICU_IMR_OFFSET 1 43 44static int 45atpic_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes, 46 uint32_t *eax, void *arg) 47{ 48 if (bytes != 1) 49 return (-1); 50 51 if (in) { 52 if (port & ICU_IMR_OFFSET) { 53 /* all interrupts masked */ 54 *eax = 0xff; 55 } else { 56 *eax = 0x00; 57 } 58 } 59 60 /* Pretend all writes to the 8259 are alright */ 61 return (0); 62} 63 64INOUT_PORT(atpic, IO_ICU1, IOPORT_F_INOUT, atpic_handler); 65INOUT_PORT(atpic, IO_ICU1 + ICU_IMR_OFFSET, IOPORT_F_INOUT, atpic_handler); 66INOUT_PORT(atpic, IO_ICU2, IOPORT_F_INOUT, atpic_handler); 67INOUT_PORT(atpic, IO_ICU2 + ICU_IMR_OFFSET, IOPORT_F_INOUT, atpic_handler); 68